Fixed MTP to work with TWRP

arch/mips/cavium-octeon/executive/Makefile

@@ -0,0 +1,19 @@
+#
+# Makefile for the Cavium Octeon specific kernel interface routines
+# under Linux.
+#
+# This file is subject to the terms and conditions of the GNU General Public
+# License.  See the file "COPYING" in the main directory of this archive
+# for more details.
+#
+# Copyright (C) 2005-2008 Cavium Networks
+#
+
+obj-y += cvmx-bootmem.o cvmx-l2c.o cvmx-sysinfo.o octeon-model.o
+obj-y += cvmx-pko.o cvmx-spi.o cvmx-cmd-queue.o \
+	cvmx-helper-board.o cvmx-helper.o cvmx-helper-xaui.o \
+	cvmx-helper-rgmii.o cvmx-helper-sgmii.o cvmx-helper-npi.o \
+	cvmx-helper-loop.o cvmx-helper-spi.o cvmx-helper-util.o \
+	cvmx-interrupt-decodes.o cvmx-interrupt-rsl.o
+
+obj-y += cvmx-helper-errata.o cvmx-helper-jtag.o

arch/mips/cavium-octeon/executive/cvmx-bootmem.c

@@ -0,0 +1,695 @@
+/***********************license start***************
+ * Author: Cavium Networks
+ *
+ * Contact: support@caviumnetworks.com
+ * This file is part of the OCTEON SDK
+ *
+ * Copyright (c) 2003-2008 Cavium Networks
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, Version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This file is distributed in the hope that it will be useful, but
+ * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
+ * NONINFRINGEMENT.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this file; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * or visit http://www.gnu.org/licenses/.
+ *
+ * This file may also be available under a different license from Cavium.
+ * Contact Cavium Networks for more information
+ ***********************license end**************************************/
+
+/*
+ * Simple allocate only memory allocator.  Used to allocate memory at
+ * application start time.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+
+#include <asm/octeon/cvmx.h>
+#include <asm/octeon/cvmx-spinlock.h>
+#include <asm/octeon/cvmx-bootmem.h>
+
+/*#define DEBUG */
+
+
+static struct cvmx_bootmem_desc *cvmx_bootmem_desc;
+
+/* See header file for descriptions of functions */
+
+/*
+ * Wrapper functions are provided for reading/writing the size and
+ * next block values as these may not be directly addressible (in 32
+ * bit applications, for instance.)  Offsets of data elements in
+ * bootmem list, must match cvmx_bootmem_block_header_t.
+ */
+#define NEXT_OFFSET 0
+#define SIZE_OFFSET 8
+
+static void cvmx_bootmem_phy_set_size(uint64_t addr, uint64_t size)
+{
+	cvmx_write64_uint64((addr + SIZE_OFFSET) | (1ull << 63), size);
+}
+
+static void cvmx_bootmem_phy_set_next(uint64_t addr, uint64_t next)
+{
+	cvmx_write64_uint64((addr + NEXT_OFFSET) | (1ull << 63), next);
+}
+
+static uint64_t cvmx_bootmem_phy_get_size(uint64_t addr)
+{
+	return cvmx_read64_uint64((addr + SIZE_OFFSET) | (1ull << 63));
+}
+
+static uint64_t cvmx_bootmem_phy_get_next(uint64_t addr)
+{
+	return cvmx_read64_uint64((addr + NEXT_OFFSET) | (1ull << 63));
+}
+
+void *cvmx_bootmem_alloc_range(uint64_t size, uint64_t alignment,
+			       uint64_t min_addr, uint64_t max_addr)
+{
+	int64_t address;
+	address =
+	    cvmx_bootmem_phy_alloc(size, min_addr, max_addr, alignment, 0);
+
+	if (address > 0)
+		return cvmx_phys_to_ptr(address);
+	else
+		return NULL;
+}
+
+void *cvmx_bootmem_alloc_address(uint64_t size, uint64_t address,
+				 uint64_t alignment)
+{
+	return cvmx_bootmem_alloc_range(size, alignment, address,
+					address + size);
+}
+
+void *cvmx_bootmem_alloc(uint64_t size, uint64_t alignment)
+{
+	return cvmx_bootmem_alloc_range(size, alignment, 0, 0);
+}
+
+void *cvmx_bootmem_alloc_named_range(uint64_t size, uint64_t min_addr,
+				     uint64_t max_addr, uint64_t align,
+				     char *name)
+{
+	int64_t addr;
+
+	addr = cvmx_bootmem_phy_named_block_alloc(size, min_addr, max_addr,
+						  align, name, 0);
+	if (addr >= 0)
+		return cvmx_phys_to_ptr(addr);
+	else
+		return NULL;
+}
+
+void *cvmx_bootmem_alloc_named_address(uint64_t size, uint64_t address,
+				       char *name)
+{
+    return cvmx_bootmem_alloc_named_range(size, address, address + size,
+					  0, name);
+}
+
+void *cvmx_bootmem_alloc_named(uint64_t size, uint64_t alignment, char *name)
+{
+    return cvmx_bootmem_alloc_named_range(size, 0, 0, alignment, name);
+}
+EXPORT_SYMBOL(cvmx_bootmem_alloc_named);
+
+int cvmx_bootmem_free_named(char *name)
+{
+	return cvmx_bootmem_phy_named_block_free(name, 0);
+}
+
+struct cvmx_bootmem_named_block_desc *cvmx_bootmem_find_named_block(char *name)
+{
+	return cvmx_bootmem_phy_named_block_find(name, 0);
+}
+EXPORT_SYMBOL(cvmx_bootmem_find_named_block);
+
+void cvmx_bootmem_lock(void)
+{
+	cvmx_spinlock_lock((cvmx_spinlock_t *) &(cvmx_bootmem_desc->lock));
+}
+
+void cvmx_bootmem_unlock(void)
+{
+	cvmx_spinlock_unlock((cvmx_spinlock_t *) &(cvmx_bootmem_desc->lock));
+}
+
+int cvmx_bootmem_init(void *mem_desc_ptr)
+{
+	/* Here we set the global pointer to the bootmem descriptor
+	 * block.  This pointer will be used directly, so we will set
+	 * it up to be directly usable by the application.  It is set
+	 * up as follows for the various runtime/ABI combinations:
+	 *
+	 * Linux 64 bit: Set XKPHYS bit
+	 * Linux 32 bit: use mmap to create mapping, use virtual address
+	 * CVMX 64 bit:	 use physical address directly
+	 * CVMX 32 bit:	 use physical address directly
+	 *
+	 * Note that the CVMX environment assumes the use of 1-1 TLB
+	 * mappings so that the physical addresses can be used
+	 * directly
+	 */
+	if (!cvmx_bootmem_desc) {
+#if   defined(CVMX_ABI_64)
+		/* Set XKPHYS bit */
+		cvmx_bootmem_desc = cvmx_phys_to_ptr(CAST64(mem_desc_ptr));
+#else
+		cvmx_bootmem_desc = (struct cvmx_bootmem_desc *) mem_desc_ptr;
+#endif
+	}
+
+	return 0;
+}
+
+/*
+ * The cvmx_bootmem_phy* functions below return 64 bit physical
+ * addresses, and expose more features that the cvmx_bootmem_functions
+ * above.  These are required for full memory space access in 32 bit
+ * applications, as well as for using some advance features.  Most
+ * applications should not need to use these.
+ */
+
+int64_t cvmx_bootmem_phy_alloc(uint64_t req_size, uint64_t address_min,
+			       uint64_t address_max, uint64_t alignment,
+			       uint32_t flags)
+{
+
+	uint64_t head_addr;
+	uint64_t ent_addr;
+	/* points to previous list entry, NULL current entry is head of list */
+	uint64_t prev_addr = 0;
+	uint64_t new_ent_addr = 0;
+	uint64_t desired_min_addr;
+
+#ifdef DEBUG
+	cvmx_dprintf("cvmx_bootmem_phy_alloc: req_size: 0x%llx, "
+		     "min_addr: 0x%llx, max_addr: 0x%llx, align: 0x%llx\n",
+		     (unsigned long long)req_size,
+		     (unsigned long long)address_min,
+		     (unsigned long long)address_max,
+		     (unsigned long long)alignment);
+#endif
+
+	if (cvmx_bootmem_desc->major_version > 3) {
+		cvmx_dprintf("ERROR: Incompatible bootmem descriptor "
+			     "version: %d.%d at addr: %p\n",
+			     (int)cvmx_bootmem_desc->major_version,
+			     (int)cvmx_bootmem_desc->minor_version,
+			     cvmx_bootmem_desc);
+		goto error_out;
+	}
+
+	/*
+	 * Do a variety of checks to validate the arguments.  The
+	 * allocator code will later assume that these checks have
+	 * been made.  We validate that the requested constraints are
+	 * not self-contradictory before we look through the list of
+	 * available memory.
+	 */
+
+	/* 0 is not a valid req_size for this allocator */
+	if (!req_size)
+		goto error_out;
+
+	/* Round req_size up to mult of minimum alignment bytes */
+	req_size = (req_size + (CVMX_BOOTMEM_ALIGNMENT_SIZE - 1)) &
+		~(CVMX_BOOTMEM_ALIGNMENT_SIZE - 1);
+
+	/*
+	 * Convert !0 address_min and 0 address_max to special case of
+	 * range that specifies an exact memory block to allocate.  Do
+	 * this before other checks and adjustments so that this
+	 * tranformation will be validated.
+	 */
+	if (address_min && !address_max)
+		address_max = address_min + req_size;
+	else if (!address_min && !address_max)
+		address_max = ~0ull;  /* If no limits given, use max limits */
+
+
+	/*
+	 * Enforce minimum alignment (this also keeps the minimum free block
+	 * req_size the same as the alignment req_size.
+	 */
+	if (alignment < CVMX_BOOTMEM_ALIGNMENT_SIZE)
+		alignment = CVMX_BOOTMEM_ALIGNMENT_SIZE;
+
+	/*
+	 * Adjust address minimum based on requested alignment (round
+	 * up to meet alignment).  Do this here so we can reject
+	 * impossible requests up front. (NOP for address_min == 0)
+	 */
+	if (alignment)
+		address_min = ALIGN(address_min, alignment);
+
+	/*
+	 * Reject inconsistent args.  We have adjusted these, so this
+	 * may fail due to our internal changes even if this check
+	 * would pass for the values the user supplied.
+	 */
+	if (req_size > address_max - address_min)
+		goto error_out;
+
+	/* Walk through the list entries - first fit found is returned */
+
+	if (!(flags & CVMX_BOOTMEM_FLAG_NO_LOCKING))
+		cvmx_bootmem_lock();
+	head_addr = cvmx_bootmem_desc->head_addr;
+	ent_addr = head_addr;
+	for (; ent_addr;
+	     prev_addr = ent_addr,
+	     ent_addr = cvmx_bootmem_phy_get_next(ent_addr)) {
+		uint64_t usable_base, usable_max;
+		uint64_t ent_size = cvmx_bootmem_phy_get_size(ent_addr);
+
+		if (cvmx_bootmem_phy_get_next(ent_addr)
+		    && ent_addr > cvmx_bootmem_phy_get_next(ent_addr)) {
+			cvmx_dprintf("Internal bootmem_alloc() error: ent: "
+				"0x%llx, next: 0x%llx\n",
+				(unsigned long long)ent_addr,
+				(unsigned long long)
+				cvmx_bootmem_phy_get_next(ent_addr));
+			goto error_out;
+		}
+
+		/*
+		 * Determine if this is an entry that can satisify the
+		 * request Check to make sure entry is large enough to
+		 * satisfy request.
+		 */
+		usable_base =
+		    ALIGN(max(address_min, ent_addr), alignment);
+		usable_max = min(address_max, ent_addr + ent_size);
+		/*
+		 * We should be able to allocate block at address
+		 * usable_base.
+		 */
+
+		desired_min_addr = usable_base;
+		/*
+		 * Determine if request can be satisfied from the
+		 * current entry.
+		 */
+		if (!((ent_addr + ent_size) > usable_base
+				&& ent_addr < address_max
+				&& req_size <= usable_max - usable_base))
+			continue;
+		/*
+		 * We have found an entry that has room to satisfy the
+		 * request, so allocate it from this entry.  If end
+		 * CVMX_BOOTMEM_FLAG_END_ALLOC set, then allocate from
+		 * the end of this block rather than the beginning.
+		 */
+		if (flags & CVMX_BOOTMEM_FLAG_END_ALLOC) {
+			desired_min_addr = usable_max - req_size;
+			/*
+			 * Align desired address down to required
+			 * alignment.
+			 */
+			desired_min_addr &= ~(alignment - 1);
+		}
+
+		/* Match at start of entry */
+		if (desired_min_addr == ent_addr) {
+			if (req_size < ent_size) {
+				/*
+				 * big enough to create a new block
+				 * from top portion of block.
+				 */
+				new_ent_addr = ent_addr + req_size;
+				cvmx_bootmem_phy_set_next(new_ent_addr,
+					cvmx_bootmem_phy_get_next(ent_addr));
+				cvmx_bootmem_phy_set_size(new_ent_addr,
+							ent_size -
+							req_size);
+
+				/*
+				 * Adjust next pointer as following
+				 * code uses this.
+				 */
+				cvmx_bootmem_phy_set_next(ent_addr,
+							new_ent_addr);
+			}
+
+			/*
+			 * adjust prev ptr or head to remove this
+			 * entry from list.
+			 */
+			if (prev_addr)
+				cvmx_bootmem_phy_set_next(prev_addr,
+					cvmx_bootmem_phy_get_next(ent_addr));
+			else
+				/*
+				 * head of list being returned, so
+				 * update head ptr.
+				 */
+				cvmx_bootmem_desc->head_addr =
+					cvmx_bootmem_phy_get_next(ent_addr);
+
+			if (!(flags & CVMX_BOOTMEM_FLAG_NO_LOCKING))
+				cvmx_bootmem_unlock();
+			return desired_min_addr;
+		}
+		/*
+		 * block returned doesn't start at beginning of entry,
+		 * so we know that we will be splitting a block off
+		 * the front of this one.  Create a new block from the
+		 * beginning, add to list, and go to top of loop
+		 * again.
+		 *
+		 * create new block from high portion of
+		 * block, so that top block starts at desired
+		 * addr.
+		 */
+		new_ent_addr = desired_min_addr;
+		cvmx_bootmem_phy_set_next(new_ent_addr,
+					cvmx_bootmem_phy_get_next
+					(ent_addr));
+		cvmx_bootmem_phy_set_size(new_ent_addr,
+					cvmx_bootmem_phy_get_size
+					(ent_addr) -
+					(desired_min_addr -
+						ent_addr));
+		cvmx_bootmem_phy_set_size(ent_addr,
+					desired_min_addr - ent_addr);
+		cvmx_bootmem_phy_set_next(ent_addr, new_ent_addr);
+		/* Loop again to handle actual alloc from new block */
+	}
+error_out:
+	/* We didn't find anything, so return error */
+	if (!(flags & CVMX_BOOTMEM_FLAG_NO_LOCKING))
+		cvmx_bootmem_unlock();
+	return -1;
+}
+
+int __cvmx_bootmem_phy_free(uint64_t phy_addr, uint64_t size, uint32_t flags)
+{
+	uint64_t cur_addr;
+	uint64_t prev_addr = 0; /* zero is invalid */
+	int retval = 0;
+
+#ifdef DEBUG
+	cvmx_dprintf("__cvmx_bootmem_phy_free addr: 0x%llx, size: 0x%llx\n",
+		     (unsigned long long)phy_addr, (unsigned long long)size);
+#endif
+	if (cvmx_bootmem_desc->major_version > 3) {
+		cvmx_dprintf("ERROR: Incompatible bootmem descriptor "
+			     "version: %d.%d at addr: %p\n",
+			     (int)cvmx_bootmem_desc->major_version,
+			     (int)cvmx_bootmem_desc->minor_version,
+			     cvmx_bootmem_desc);
+		return 0;
+	}
+
+	/* 0 is not a valid size for this allocator */
+	if (!size)
+		return 0;
+
+	if (!(flags & CVMX_BOOTMEM_FLAG_NO_LOCKING))
+		cvmx_bootmem_lock();
+	cur_addr = cvmx_bootmem_desc->head_addr;
+	if (cur_addr == 0 || phy_addr < cur_addr) {
+		/* add at front of list - special case with changing head ptr */
+		if (cur_addr && phy_addr + size > cur_addr)
+			goto bootmem_free_done; /* error, overlapping section */
+		else if (phy_addr + size == cur_addr) {
+			/* Add to front of existing first block */
+			cvmx_bootmem_phy_set_next(phy_addr,
+						  cvmx_bootmem_phy_get_next
+						  (cur_addr));
+			cvmx_bootmem_phy_set_size(phy_addr,
+						  cvmx_bootmem_phy_get_size
+						  (cur_addr) + size);
+			cvmx_bootmem_desc->head_addr = phy_addr;
+
+		} else {
+			/* New block before first block.  OK if cur_addr is 0 */
+			cvmx_bootmem_phy_set_next(phy_addr, cur_addr);
+			cvmx_bootmem_phy_set_size(phy_addr, size);
+			cvmx_bootmem_desc->head_addr = phy_addr;
+		}
+		retval = 1;
+		goto bootmem_free_done;
+	}
+
+	/* Find place in list to add block */
+	while (cur_addr && phy_addr > cur_addr) {
+		prev_addr = cur_addr;
+		cur_addr = cvmx_bootmem_phy_get_next(cur_addr);
+	}
+
+	if (!cur_addr) {
+		/*
+		 * We have reached the end of the list, add on to end,
+		 * checking to see if we need to combine with last
+		 * block
+		 */
+		if (prev_addr + cvmx_bootmem_phy_get_size(prev_addr) ==
+		    phy_addr) {
+			cvmx_bootmem_phy_set_size(prev_addr,
+						  cvmx_bootmem_phy_get_size
+						  (prev_addr) + size);
+		} else {
+			cvmx_bootmem_phy_set_next(prev_addr, phy_addr);
+			cvmx_bootmem_phy_set_size(phy_addr, size);
+			cvmx_bootmem_phy_set_next(phy_addr, 0);
+		}
+		retval = 1;
+		goto bootmem_free_done;
+	} else {
+		/*
+		 * insert between prev and cur nodes, checking for
+		 * merge with either/both.
+		 */
+		if (prev_addr + cvmx_bootmem_phy_get_size(prev_addr) ==
+		    phy_addr) {
+			/* Merge with previous */
+			cvmx_bootmem_phy_set_size(prev_addr,
+						  cvmx_bootmem_phy_get_size
+						  (prev_addr) + size);
+			if (phy_addr + size == cur_addr) {
+				/* Also merge with current */
+				cvmx_bootmem_phy_set_size(prev_addr,
+					cvmx_bootmem_phy_get_size(cur_addr) +
+					cvmx_bootmem_phy_get_size(prev_addr));
+				cvmx_bootmem_phy_set_next(prev_addr,
+					cvmx_bootmem_phy_get_next(cur_addr));
+			}
+			retval = 1;
+			goto bootmem_free_done;
+		} else if (phy_addr + size == cur_addr) {
+			/* Merge with current */
+			cvmx_bootmem_phy_set_size(phy_addr,
+						  cvmx_bootmem_phy_get_size
+						  (cur_addr) + size);
+			cvmx_bootmem_phy_set_next(phy_addr,
+						  cvmx_bootmem_phy_get_next
+						  (cur_addr));
+			cvmx_bootmem_phy_set_next(prev_addr, phy_addr);
+			retval = 1;
+			goto bootmem_free_done;
+		}
+
+		/* It is a standalone block, add in between prev and cur */
+		cvmx_bootmem_phy_set_size(phy_addr, size);
+		cvmx_bootmem_phy_set_next(phy_addr, cur_addr);
+		cvmx_bootmem_phy_set_next(prev_addr, phy_addr);
+
+	}
+	retval = 1;
+
+bootmem_free_done:
+	if (!(flags & CVMX_BOOTMEM_FLAG_NO_LOCKING))
+		cvmx_bootmem_unlock();
+	return retval;
+
+}
+
+struct cvmx_bootmem_named_block_desc *
+	cvmx_bootmem_phy_named_block_find(char *name, uint32_t flags)
+{
+	unsigned int i;
+	struct cvmx_bootmem_named_block_desc *named_block_array_ptr;
+
+#ifdef DEBUG
+	cvmx_dprintf("cvmx_bootmem_phy_named_block_find: %s\n", name);
+#endif
+	/*
+	 * Lock the structure to make sure that it is not being
+	 * changed while we are examining it.
+	 */
+	if (!(flags & CVMX_BOOTMEM_FLAG_NO_LOCKING))
+		cvmx_bootmem_lock();
+
+	/* Use XKPHYS for 64 bit linux */
+	named_block_array_ptr = (struct cvmx_bootmem_named_block_desc *)
+	    cvmx_phys_to_ptr(cvmx_bootmem_desc->named_block_array_addr);
+
+#ifdef DEBUG
+	cvmx_dprintf
+	    ("cvmx_bootmem_phy_named_block_find: named_block_array_ptr: %p\n",
+	     named_block_array_ptr);
+#endif
+	if (cvmx_bootmem_desc->major_version == 3) {
+		for (i = 0;
+		     i < cvmx_bootmem_desc->named_block_num_blocks; i++) {
+			if ((name && named_block_array_ptr[i].size
+			     && !strncmp(name, named_block_array_ptr[i].name,
+					 cvmx_bootmem_desc->named_block_name_len
+					 - 1))
+			    || (!name && !named_block_array_ptr[i].size)) {
+				if (!(flags & CVMX_BOOTMEM_FLAG_NO_LOCKING))
+					cvmx_bootmem_unlock();
+
+				return &(named_block_array_ptr[i]);
+			}
+		}
+	} else {
+		cvmx_dprintf("ERROR: Incompatible bootmem descriptor "
+			     "version: %d.%d at addr: %p\n",
+			     (int)cvmx_bootmem_desc->major_version,
+			     (int)cvmx_bootmem_desc->minor_version,
+			     cvmx_bootmem_desc);
+	}
+	if (!(flags & CVMX_BOOTMEM_FLAG_NO_LOCKING))
+		cvmx_bootmem_unlock();
+
+	return NULL;
+}
+
+int cvmx_bootmem_phy_named_block_free(char *name, uint32_t flags)
+{
+	struct cvmx_bootmem_named_block_desc *named_block_ptr;
+
+	if (cvmx_bootmem_desc->major_version != 3) {
+		cvmx_dprintf("ERROR: Incompatible bootmem descriptor version: "
+			     "%d.%d at addr: %p\n",
+			     (int)cvmx_bootmem_desc->major_version,
+			     (int)cvmx_bootmem_desc->minor_version,
+			     cvmx_bootmem_desc);
+		return 0;
+	}
+#ifdef DEBUG
+	cvmx_dprintf("cvmx_bootmem_phy_named_block_free: %s\n", name);
+#endif
+
+	/*
+	 * Take lock here, as name lookup/block free/name free need to
+	 * be atomic.
+	 */
+	cvmx_bootmem_lock();
+
+	named_block_ptr =
+	    cvmx_bootmem_phy_named_block_find(name,
+					      CVMX_BOOTMEM_FLAG_NO_LOCKING);
+	if (named_block_ptr) {
+#ifdef DEBUG
+		cvmx_dprintf("cvmx_bootmem_phy_named_block_free: "
+			     "%s, base: 0x%llx, size: 0x%llx\n",
+			     name,
+			     (unsigned long long)named_block_ptr->base_addr,
+			     (unsigned long long)named_block_ptr->size);
+#endif
+		__cvmx_bootmem_phy_free(named_block_ptr->base_addr,
+					named_block_ptr->size,
+					CVMX_BOOTMEM_FLAG_NO_LOCKING);
+		named_block_ptr->size = 0;
+		/* Set size to zero to indicate block not used. */
+	}
+
+	cvmx_bootmem_unlock();
+	return named_block_ptr != NULL; /* 0 on failure, 1 on success */
+}
+
+int64_t cvmx_bootmem_phy_named_block_alloc(uint64_t size, uint64_t min_addr,
+					   uint64_t max_addr,
+					   uint64_t alignment,
+					   char *name,
+					   uint32_t flags)
+{
+	int64_t addr_allocated;
+	struct cvmx_bootmem_named_block_desc *named_block_desc_ptr;
+
+#ifdef DEBUG
+	cvmx_dprintf("cvmx_bootmem_phy_named_block_alloc: size: 0x%llx, min: "
+		     "0x%llx, max: 0x%llx, align: 0x%llx, name: %s\n",
+		     (unsigned long long)size,
+		     (unsigned long long)min_addr,
+		     (unsigned long long)max_addr,
+		     (unsigned long long)alignment,
+		     name);
+#endif
+	if (cvmx_bootmem_desc->major_version != 3) {
+		cvmx_dprintf("ERROR: Incompatible bootmem descriptor version: "
+			     "%d.%d at addr: %p\n",
+			     (int)cvmx_bootmem_desc->major_version,
+			     (int)cvmx_bootmem_desc->minor_version,
+			     cvmx_bootmem_desc);
+		return -1;
+	}
+
+	/*
+	 * Take lock here, as name lookup/block alloc/name add need to
+	 * be atomic.
+	 */
+	if (!(flags & CVMX_BOOTMEM_FLAG_NO_LOCKING))
+		cvmx_spinlock_lock((cvmx_spinlock_t *)&(cvmx_bootmem_desc->lock));
+
+	/* Get pointer to first available named block descriptor */
+	named_block_desc_ptr =
+		cvmx_bootmem_phy_named_block_find(NULL,
+						  flags | CVMX_BOOTMEM_FLAG_NO_LOCKING);
+
+	/*
+	 * Check to see if name already in use, return error if name
+	 * not available or no more room for blocks.
+	 */
+	if (cvmx_bootmem_phy_named_block_find(name,
+					      flags | CVMX_BOOTMEM_FLAG_NO_LOCKING) || !named_block_desc_ptr) {
+		if (!(flags & CVMX_BOOTMEM_FLAG_NO_LOCKING))
+			cvmx_spinlock_unlock((cvmx_spinlock_t *)&(cvmx_bootmem_desc->lock));
+		return -1;
+	}
+
+
+	/*
+	 * Round size up to mult of minimum alignment bytes We need
+	 * the actual size allocated to allow for blocks to be
+	 * coallesced when they are freed.  The alloc routine does the
+	 * same rounding up on all allocations.
+	 */
+	size = ALIGN(size, CVMX_BOOTMEM_ALIGNMENT_SIZE);
+
+	addr_allocated = cvmx_bootmem_phy_alloc(size, min_addr, max_addr,
+						alignment,
+						flags | CVMX_BOOTMEM_FLAG_NO_LOCKING);
+	if (addr_allocated >= 0) {
+		named_block_desc_ptr->base_addr = addr_allocated;
+		named_block_desc_ptr->size = size;
+		strncpy(named_block_desc_ptr->name, name,
+			cvmx_bootmem_desc->named_block_name_len);
+		named_block_desc_ptr->name[cvmx_bootmem_desc->named_block_name_len - 1] = 0;
+	}
+
+	if (!(flags & CVMX_BOOTMEM_FLAG_NO_LOCKING))
+		cvmx_spinlock_unlock((cvmx_spinlock_t *)&(cvmx_bootmem_desc->lock));
+	return addr_allocated;
+}
+
+struct cvmx_bootmem_desc *cvmx_bootmem_get_desc(void)
+{
+	return cvmx_bootmem_desc;
+}

arch/mips/cavium-octeon/executive/cvmx-cmd-queue.c

@@ -0,0 +1,307 @@
+/***********************license start***************
+ * Author: Cavium Networks
+ *
+ * Contact: support@caviumnetworks.com
+ * This file is part of the OCTEON SDK
+ *
+ * Copyright (c) 2003-2008 Cavium Networks
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, Version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This file is distributed in the hope that it will be useful, but
+ * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
+ * NONINFRINGEMENT.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this file; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * or visit http://www.gnu.org/licenses/.
+ *
+ * This file may also be available under a different license from Cavium.
+ * Contact Cavium Networks for more information
+ ***********************license end**************************************/
+
+/*
+ * Support functions for managing command queues used for
+ * various hardware blocks.
+ */
+
+#include <linux/kernel.h>
+
+#include <asm/octeon/octeon.h>
+
+#include <asm/octeon/cvmx-config.h>
+#include <asm/octeon/cvmx-fpa.h>
+#include <asm/octeon/cvmx-cmd-queue.h>
+
+#include <asm/octeon/cvmx-npei-defs.h>
+#include <asm/octeon/cvmx-pexp-defs.h>
+#include <asm/octeon/cvmx-pko-defs.h>
+
+/**
+ * This application uses this pointer to access the global queue
+ * state. It points to a bootmem named block.
+ */
+__cvmx_cmd_queue_all_state_t *__cvmx_cmd_queue_state_ptr;
+EXPORT_SYMBOL_GPL(__cvmx_cmd_queue_state_ptr);
+
+/**
+ * Initialize the Global queue state pointer.
+ *
+ * Returns CVMX_CMD_QUEUE_SUCCESS or a failure code
+ */
+static cvmx_cmd_queue_result_t __cvmx_cmd_queue_init_state_ptr(void)
+{
+	char *alloc_name = "cvmx_cmd_queues";
+#if defined(CONFIG_CAVIUM_RESERVE32) && CONFIG_CAVIUM_RESERVE32
+	extern uint64_t octeon_reserve32_memory;
+#endif
+
+	if (likely(__cvmx_cmd_queue_state_ptr))
+		return CVMX_CMD_QUEUE_SUCCESS;
+
+#if defined(CONFIG_CAVIUM_RESERVE32) && CONFIG_CAVIUM_RESERVE32
+	if (octeon_reserve32_memory)
+		__cvmx_cmd_queue_state_ptr =
+		    cvmx_bootmem_alloc_named_range(sizeof(*__cvmx_cmd_queue_state_ptr),
+						   octeon_reserve32_memory,
+						   octeon_reserve32_memory +
+						   (CONFIG_CAVIUM_RESERVE32 <<
+						    20) - 1, 128, alloc_name);
+	else
+#endif
+		__cvmx_cmd_queue_state_ptr =
+		    cvmx_bootmem_alloc_named(sizeof(*__cvmx_cmd_queue_state_ptr),
+					    128,
+					    alloc_name);
+	if (__cvmx_cmd_queue_state_ptr)
+		memset(__cvmx_cmd_queue_state_ptr, 0,
+		       sizeof(*__cvmx_cmd_queue_state_ptr));
+	else {
+		struct cvmx_bootmem_named_block_desc *block_desc =
+		    cvmx_bootmem_find_named_block(alloc_name);
+		if (block_desc)
+			__cvmx_cmd_queue_state_ptr =
+			    cvmx_phys_to_ptr(block_desc->base_addr);
+		else {
+			cvmx_dprintf
+			    ("ERROR: cvmx_cmd_queue_initialize: Unable to get named block %s.\n",
+			     alloc_name);
+			return CVMX_CMD_QUEUE_NO_MEMORY;
+		}
+	}
+	return CVMX_CMD_QUEUE_SUCCESS;
+}
+
+/**
+ * Initialize a command queue for use. The initial FPA buffer is
+ * allocated and the hardware unit is configured to point to the
+ * new command queue.
+ *
+ * @queue_id:  Hardware command queue to initialize.
+ * @max_depth: Maximum outstanding commands that can be queued.
+ * @fpa_pool:  FPA pool the command queues should come from.
+ * @pool_size: Size of each buffer in the FPA pool (bytes)
+ *
+ * Returns CVMX_CMD_QUEUE_SUCCESS or a failure code
+ */
+cvmx_cmd_queue_result_t cvmx_cmd_queue_initialize(cvmx_cmd_queue_id_t queue_id,
+						  int max_depth, int fpa_pool,
+						  int pool_size)
+{
+	__cvmx_cmd_queue_state_t *qstate;
+	cvmx_cmd_queue_result_t result = __cvmx_cmd_queue_init_state_ptr();
+	if (result != CVMX_CMD_QUEUE_SUCCESS)
+		return result;
+
+	qstate = __cvmx_cmd_queue_get_state(queue_id);
+	if (qstate == NULL)
+		return CVMX_CMD_QUEUE_INVALID_PARAM;
+
+	/*
+	 * We artificially limit max_depth to 1<<20 words. It is an
+	 * arbitrary limit.
+	 */
+	if (CVMX_CMD_QUEUE_ENABLE_MAX_DEPTH) {
+		if ((max_depth < 0) || (max_depth > 1 << 20))
+			return CVMX_CMD_QUEUE_INVALID_PARAM;
+	} else if (max_depth != 0)
+		return CVMX_CMD_QUEUE_INVALID_PARAM;
+
+	if ((fpa_pool < 0) || (fpa_pool > 7))
+		return CVMX_CMD_QUEUE_INVALID_PARAM;
+	if ((pool_size < 128) || (pool_size > 65536))
+		return CVMX_CMD_QUEUE_INVALID_PARAM;
+
+	/* See if someone else has already initialized the queue */
+	if (qstate->base_ptr_div128) {
+		if (max_depth != (int)qstate->max_depth) {
+			cvmx_dprintf("ERROR: cvmx_cmd_queue_initialize: "
+				"Queue already initialized with different "
+				"max_depth (%d).\n",
+			     (int)qstate->max_depth);
+			return CVMX_CMD_QUEUE_INVALID_PARAM;
+		}
+		if (fpa_pool != qstate->fpa_pool) {
+			cvmx_dprintf("ERROR: cvmx_cmd_queue_initialize: "
+				"Queue already initialized with different "
+				"FPA pool (%u).\n",
+			     qstate->fpa_pool);
+			return CVMX_CMD_QUEUE_INVALID_PARAM;
+		}
+		if ((pool_size >> 3) - 1 != qstate->pool_size_m1) {
+			cvmx_dprintf("ERROR: cvmx_cmd_queue_initialize: "
+				"Queue already initialized with different "
+				"FPA pool size (%u).\n",
+			     (qstate->pool_size_m1 + 1) << 3);
+			return CVMX_CMD_QUEUE_INVALID_PARAM;
+		}
+		CVMX_SYNCWS;
+		return CVMX_CMD_QUEUE_ALREADY_SETUP;
+	} else {
+		union cvmx_fpa_ctl_status status;
+		void *buffer;
+
+		status.u64 = cvmx_read_csr(CVMX_FPA_CTL_STATUS);
+		if (!status.s.enb) {
+			cvmx_dprintf("ERROR: cvmx_cmd_queue_initialize: "
+				     "FPA is not enabled.\n");
+			return CVMX_CMD_QUEUE_NO_MEMORY;
+		}
+		buffer = cvmx_fpa_alloc(fpa_pool);
+		if (buffer == NULL) {
+			cvmx_dprintf("ERROR: cvmx_cmd_queue_initialize: "
+				     "Unable to allocate initial buffer.\n");
+			return CVMX_CMD_QUEUE_NO_MEMORY;
+		}
+
+		memset(qstate, 0, sizeof(*qstate));
+		qstate->max_depth = max_depth;
+		qstate->fpa_pool = fpa_pool;
+		qstate->pool_size_m1 = (pool_size >> 3) - 1;
+		qstate->base_ptr_div128 = cvmx_ptr_to_phys(buffer) / 128;
+		/*
+		 * We zeroed the now serving field so we need to also
+		 * zero the ticket.
+		 */
+		__cvmx_cmd_queue_state_ptr->
+		    ticket[__cvmx_cmd_queue_get_index(queue_id)] = 0;
+		CVMX_SYNCWS;
+		return CVMX_CMD_QUEUE_SUCCESS;
+	}
+}
+
+/**
+ * Shutdown a queue a free it's command buffers to the FPA. The
+ * hardware connected to the queue must be stopped before this
+ * function is called.
+ *
+ * @queue_id: Queue to shutdown
+ *
+ * Returns CVMX_CMD_QUEUE_SUCCESS or a failure code
+ */
+cvmx_cmd_queue_result_t cvmx_cmd_queue_shutdown(cvmx_cmd_queue_id_t queue_id)
+{
+	__cvmx_cmd_queue_state_t *qptr = __cvmx_cmd_queue_get_state(queue_id);
+	if (qptr == NULL) {
+		cvmx_dprintf("ERROR: cvmx_cmd_queue_shutdown: Unable to "
+			     "get queue information.\n");
+		return CVMX_CMD_QUEUE_INVALID_PARAM;
+	}
+
+	if (cvmx_cmd_queue_length(queue_id) > 0) {
+		cvmx_dprintf("ERROR: cvmx_cmd_queue_shutdown: Queue still "
+			     "has data in it.\n");
+		return CVMX_CMD_QUEUE_FULL;
+	}
+
+	__cvmx_cmd_queue_lock(queue_id, qptr);
+	if (qptr->base_ptr_div128) {
+		cvmx_fpa_free(cvmx_phys_to_ptr
+			      ((uint64_t) qptr->base_ptr_div128 << 7),
+			      qptr->fpa_pool, 0);
+		qptr->base_ptr_div128 = 0;
+	}
+	__cvmx_cmd_queue_unlock(qptr);
+
+	return CVMX_CMD_QUEUE_SUCCESS;
+}
+
+/**
+ * Return the number of command words pending in the queue. This
+ * function may be relatively slow for some hardware units.
+ *
+ * @queue_id: Hardware command queue to query
+ *
+ * Returns Number of outstanding commands
+ */
+int cvmx_cmd_queue_length(cvmx_cmd_queue_id_t queue_id)
+{
+	if (CVMX_ENABLE_PARAMETER_CHECKING) {
+		if (__cvmx_cmd_queue_get_state(queue_id) == NULL)
+			return CVMX_CMD_QUEUE_INVALID_PARAM;
+	}
+
+	/*
+	 * The cast is here so gcc with check that all values in the
+	 * cvmx_cmd_queue_id_t enumeration are here.
+	 */
+	switch ((cvmx_cmd_queue_id_t) (queue_id & 0xff0000)) {
+	case CVMX_CMD_QUEUE_PKO_BASE:
+		/*
+		 * FIXME: Need atomic lock on
+		 * CVMX_PKO_REG_READ_IDX. Right now we are normally
+		 * called with the queue lock, so that is a SLIGHT
+		 * amount of protection.
+		 */
+		cvmx_write_csr(CVMX_PKO_REG_READ_IDX, queue_id & 0xffff);
+		if (OCTEON_IS_MODEL(OCTEON_CN3XXX)) {
+			union cvmx_pko_mem_debug9 debug9;
+			debug9.u64 = cvmx_read_csr(CVMX_PKO_MEM_DEBUG9);
+			return debug9.cn38xx.doorbell;
+		} else {
+			union cvmx_pko_mem_debug8 debug8;
+			debug8.u64 = cvmx_read_csr(CVMX_PKO_MEM_DEBUG8);
+			return debug8.cn58xx.doorbell;
+		}
+	case CVMX_CMD_QUEUE_ZIP:
+	case CVMX_CMD_QUEUE_DFA:
+	case CVMX_CMD_QUEUE_RAID:
+		/* FIXME: Implement other lengths */
+		return 0;
+	case CVMX_CMD_QUEUE_DMA_BASE:
+		{
+			union cvmx_npei_dmax_counts dmax_counts;
+			dmax_counts.u64 =
+			    cvmx_read_csr(CVMX_PEXP_NPEI_DMAX_COUNTS
+					  (queue_id & 0x7));
+			return dmax_counts.s.dbell;
+		}
+	case CVMX_CMD_QUEUE_END:
+		return CVMX_CMD_QUEUE_INVALID_PARAM;
+	}
+	return CVMX_CMD_QUEUE_INVALID_PARAM;
+}
+
+/**
+ * Return the command buffer to be written to. The purpose of this
+ * function is to allow CVMX routine access t othe low level buffer
+ * for initial hardware setup. User applications should not call this
+ * function directly.
+ *
+ * @queue_id: Command queue to query
+ *
+ * Returns Command buffer or NULL on failure
+ */
+void *cvmx_cmd_queue_buffer(cvmx_cmd_queue_id_t queue_id)
+{
+	__cvmx_cmd_queue_state_t *qptr = __cvmx_cmd_queue_get_state(queue_id);
+	if (qptr && qptr->base_ptr_div128)
+		return cvmx_phys_to_ptr((uint64_t) qptr->base_ptr_div128 << 7);
+	else
+		return NULL;
+}

arch/mips/cavium-octeon/executive/cvmx-helper-board.c

@@ -0,0 +1,773 @@
+/***********************license start***************
+ * Author: Cavium Networks
+ *
+ * Contact: support@caviumnetworks.com
+ * This file is part of the OCTEON SDK
+ *
+ * Copyright (c) 2003-2008 Cavium Networks
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, Version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This file is distributed in the hope that it will be useful, but
+ * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
+ * NONINFRINGEMENT.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this file; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * or visit http://www.gnu.org/licenses/.
+ *
+ * This file may also be available under a different license from Cavium.
+ * Contact Cavium Networks for more information
+ ***********************license end**************************************/
+
+/*
+ *
+ * Helper functions to abstract board specific data about
+ * network ports from the rest of the cvmx-helper files.
+ */
+
+#include <asm/octeon/octeon.h>
+#include <asm/octeon/cvmx-bootinfo.h>
+
+#include <asm/octeon/cvmx-config.h>
+
+#include <asm/octeon/cvmx-mdio.h>
+
+#include <asm/octeon/cvmx-helper.h>
+#include <asm/octeon/cvmx-helper-util.h>
+#include <asm/octeon/cvmx-helper-board.h>
+
+#include <asm/octeon/cvmx-gmxx-defs.h>
+#include <asm/octeon/cvmx-asxx-defs.h>
+
+/**
+ * cvmx_override_board_link_get(int ipd_port) is a function
+ * pointer. It is meant to allow customization of the process of
+ * talking to a PHY to determine link speed. It is called every
+ * time a PHY must be polled for link status. Users should set
+ * this pointer to a function before calling any cvmx-helper
+ * operations.
+ */
+cvmx_helper_link_info_t(*cvmx_override_board_link_get) (int ipd_port) =
+    NULL;
+
+/**
+ * Return the MII PHY address associated with the given IPD
+ * port. A result of -1 means there isn't a MII capable PHY
+ * connected to this port. On chips supporting multiple MII
+ * busses the bus number is encoded in bits <15:8>.
+ *
+ * This function must be modified for every new Octeon board.
+ * Internally it uses switch statements based on the cvmx_sysinfo
+ * data to determine board types and revisions. It replies on the
+ * fact that every Octeon board receives a unique board type
+ * enumeration from the bootloader.
+ *
+ * @ipd_port: Octeon IPD port to get the MII address for.
+ *
+ * Returns MII PHY address and bus number or -1.
+ */
+int cvmx_helper_board_get_mii_address(int ipd_port)
+{
+	switch (cvmx_sysinfo_get()->board_type) {
+	case CVMX_BOARD_TYPE_SIM:
+		/* Simulator doesn't have MII */
+		return -1;
+	case CVMX_BOARD_TYPE_EBT3000:
+	case CVMX_BOARD_TYPE_EBT5800:
+	case CVMX_BOARD_TYPE_THUNDER:
+	case CVMX_BOARD_TYPE_NICPRO2:
+		/* Interface 0 is SPI4, interface 1 is RGMII */
+		if ((ipd_port >= 16) && (ipd_port < 20))
+			return ipd_port - 16;
+		else
+			return -1;
+	case CVMX_BOARD_TYPE_KODAMA:
+	case CVMX_BOARD_TYPE_EBH3100:
+	case CVMX_BOARD_TYPE_HIKARI:
+	case CVMX_BOARD_TYPE_CN3010_EVB_HS5:
+	case CVMX_BOARD_TYPE_CN3005_EVB_HS5:
+	case CVMX_BOARD_TYPE_CN3020_EVB_HS5:
+		/*
+		 * Port 0 is WAN connected to a PHY, Port 1 is GMII
+		 * connected to a switch
+		 */
+		if (ipd_port == 0)
+			return 4;
+		else if (ipd_port == 1)
+			return 9;
+		else
+			return -1;
+	case CVMX_BOARD_TYPE_NAC38:
+		/* Board has 8 RGMII ports PHYs are 0-7 */
+		if ((ipd_port >= 0) && (ipd_port < 4))
+			return ipd_port;
+		else if ((ipd_port >= 16) && (ipd_port < 20))
+			return ipd_port - 16 + 4;
+		else
+			return -1;
+	case CVMX_BOARD_TYPE_EBH3000:
+		/* Board has dual SPI4 and no PHYs */
+		return -1;
+	case CVMX_BOARD_TYPE_EBH5200:
+	case CVMX_BOARD_TYPE_EBH5201:
+	case CVMX_BOARD_TYPE_EBT5200:
+		/* Board has 2 management ports */
+		if ((ipd_port >= CVMX_HELPER_BOARD_MGMT_IPD_PORT) &&
+		    (ipd_port < (CVMX_HELPER_BOARD_MGMT_IPD_PORT + 2)))
+			return ipd_port - CVMX_HELPER_BOARD_MGMT_IPD_PORT;
+		/*
+		 * Board has 4 SGMII ports. The PHYs start right after the MII
+		 * ports MII0 = 0, MII1 = 1, SGMII = 2-5.
+		 */
+		if ((ipd_port >= 0) && (ipd_port < 4))
+			return ipd_port + 2;
+		else
+			return -1;
+	case CVMX_BOARD_TYPE_EBH5600:
+	case CVMX_BOARD_TYPE_EBH5601:
+	case CVMX_BOARD_TYPE_EBH5610:
+		/* Board has 1 management port */
+		if (ipd_port == CVMX_HELPER_BOARD_MGMT_IPD_PORT)
+			return 0;
+		/*
+		 * Board has 8 SGMII ports. 4 connect out, two connect
+		 * to a switch, and 2 loop to each other
+		 */
+		if ((ipd_port >= 0) && (ipd_port < 4))
+			return ipd_port + 1;
+		else
+			return -1;
+	case CVMX_BOARD_TYPE_CUST_NB5:
+		if (ipd_port == 2)
+			return 4;
+		else
+			return -1;
+	case CVMX_BOARD_TYPE_NIC_XLE_4G:
+		/* Board has 4 SGMII ports. connected QLM3(interface 1) */
+		if ((ipd_port >= 16) && (ipd_port < 20))
+			return ipd_port - 16 + 1;
+		else
+			return -1;
+	case CVMX_BOARD_TYPE_NIC_XLE_10G:
+	case CVMX_BOARD_TYPE_NIC10E:
+		return -1;
+	case CVMX_BOARD_TYPE_NIC4E:
+		if (ipd_port >= 0 && ipd_port <= 3)
+			return (ipd_port + 0x1f) & 0x1f;
+		else
+			return -1;
+	case CVMX_BOARD_TYPE_NIC2E:
+		if (ipd_port >= 0 && ipd_port <= 1)
+			return ipd_port + 1;
+		else
+			return -1;
+	case CVMX_BOARD_TYPE_BBGW_REF:
+		/*
+		 * No PHYs are connected to Octeon, everything is
+		 * through switch.
+		 */
+		return -1;
+
+	case CVMX_BOARD_TYPE_CUST_WSX16:
+		if (ipd_port >= 0 && ipd_port <= 3)
+			return ipd_port;
+		else if (ipd_port >= 16 && ipd_port <= 19)
+			return ipd_port - 16 + 4;
+		else
+			return -1;
+	case CVMX_BOARD_TYPE_UBNT_E100:
+		if (ipd_port >= 0 && ipd_port <= 2)
+			return 7 - ipd_port;
+		else
+			return -1;
+	case CVMX_BOARD_TYPE_CUST_DSR1000N:
+		/*
+		 * Port 2 connects to Broadcom PHY (B5081). Other ports (0-1)
+		 * connect to a switch (BCM53115).
+		 */
+		if (ipd_port == 2)
+			return 8;
+		else
+			return -1;
+	}
+
+	/* Some unknown board. Somebody forgot to update this function... */
+	cvmx_dprintf
+	    ("cvmx_helper_board_get_mii_address: Unknown board type %d\n",
+	     cvmx_sysinfo_get()->board_type);
+	return -1;
+}
+
+/**
+ * This function is the board specific method of determining an
+ * ethernet ports link speed. Most Octeon boards have Marvell PHYs
+ * and are handled by the fall through case. This function must be
+ * updated for boards that don't have the normal Marvell PHYs.
+ *
+ * This function must be modified for every new Octeon board.
+ * Internally it uses switch statements based on the cvmx_sysinfo
+ * data to determine board types and revisions. It relies on the
+ * fact that every Octeon board receives a unique board type
+ * enumeration from the bootloader.
+ *
+ * @ipd_port: IPD input port associated with the port we want to get link
+ *		   status for.
+ *
+ * Returns The ports link status. If the link isn't fully resolved, this must
+ *	   return zero.
+ */
+cvmx_helper_link_info_t __cvmx_helper_board_link_get(int ipd_port)
+{
+	cvmx_helper_link_info_t result;
+	int phy_addr;
+	int is_broadcom_phy = 0;
+
+	/* Give the user a chance to override the processing of this function */
+	if (cvmx_override_board_link_get)
+		return cvmx_override_board_link_get(ipd_port);
+
+	/* Unless we fix it later, all links are defaulted to down */
+	result.u64 = 0;
+
+	/*
+	 * This switch statement should handle all ports that either don't use
+	 * Marvell PHYS, or don't support in-band status.
+	 */
+	switch (cvmx_sysinfo_get()->board_type) {
+	case CVMX_BOARD_TYPE_SIM:
+		/* The simulator gives you a simulated 1Gbps full duplex link */
+		result.s.link_up = 1;
+		result.s.full_duplex = 1;
+		result.s.speed = 1000;
+		return result;
+	case CVMX_BOARD_TYPE_EBH3100:
+	case CVMX_BOARD_TYPE_CN3010_EVB_HS5:
+	case CVMX_BOARD_TYPE_CN3005_EVB_HS5:
+	case CVMX_BOARD_TYPE_CN3020_EVB_HS5:
+		/* Port 1 on these boards is always Gigabit */
+		if (ipd_port == 1) {
+			result.s.link_up = 1;
+			result.s.full_duplex = 1;
+			result.s.speed = 1000;
+			return result;
+		}
+		/* Fall through to the generic code below */
+		break;
+	case CVMX_BOARD_TYPE_CUST_NB5:
+		/* Port 1 on these boards is always Gigabit */
+		if (ipd_port == 1) {
+			result.s.link_up = 1;
+			result.s.full_duplex = 1;
+			result.s.speed = 1000;
+			return result;
+		} else		/* The other port uses a broadcom PHY */
+			is_broadcom_phy = 1;
+		break;
+	case CVMX_BOARD_TYPE_BBGW_REF:
+		/* Port 1 on these boards is always Gigabit */
+		if (ipd_port == 2) {
+			/* Port 2 is not hooked up */
+			result.u64 = 0;
+			return result;
+		} else {
+			/* Ports 0 and 1 connect to the switch */
+			result.s.link_up = 1;
+			result.s.full_duplex = 1;
+			result.s.speed = 1000;
+			return result;
+		}
+		break;
+	case CVMX_BOARD_TYPE_CUST_DSR1000N:
+		if (ipd_port == 0 || ipd_port == 1) {
+			/* Ports 0 and 1 connect to a switch (BCM53115). */
+			result.s.link_up = 1;
+			result.s.full_duplex = 1;
+			result.s.speed = 1000;
+			return result;
+		} else {
+			/* Port 2 uses a Broadcom PHY (B5081). */
+			is_broadcom_phy = 1;
+		}
+		break;
+	}
+
+	phy_addr = cvmx_helper_board_get_mii_address(ipd_port);
+	if (phy_addr != -1) {
+		if (is_broadcom_phy) {
+			/*
+			 * Below we are going to read SMI/MDIO
+			 * register 0x19 which works on Broadcom
+			 * parts
+			 */
+			int phy_status =
+			    cvmx_mdio_read(phy_addr >> 8, phy_addr & 0xff,
+					   0x19);
+			switch ((phy_status >> 8) & 0x7) {
+			case 0:
+				result.u64 = 0;
+				break;
+			case 1:
+				result.s.link_up = 1;
+				result.s.full_duplex = 0;
+				result.s.speed = 10;
+				break;
+			case 2:
+				result.s.link_up = 1;
+				result.s.full_duplex = 1;
+				result.s.speed = 10;
+				break;
+			case 3:
+				result.s.link_up = 1;
+				result.s.full_duplex = 0;
+				result.s.speed = 100;
+				break;
+			case 4:
+				result.s.link_up = 1;
+				result.s.full_duplex = 1;
+				result.s.speed = 100;
+				break;
+			case 5:
+				result.s.link_up = 1;
+				result.s.full_duplex = 1;
+				result.s.speed = 100;
+				break;
+			case 6:
+				result.s.link_up = 1;
+				result.s.full_duplex = 0;
+				result.s.speed = 1000;
+				break;
+			case 7:
+				result.s.link_up = 1;
+				result.s.full_duplex = 1;
+				result.s.speed = 1000;
+				break;
+			}
+		} else {
+			/*
+			 * This code assumes we are using a Marvell
+			 * Gigabit PHY. All the speed information can
+			 * be read from register 17 in one
+			 * go. Somebody using a different PHY will
+			 * need to handle it above in the board
+			 * specific area.
+			 */
+			int phy_status =
+			    cvmx_mdio_read(phy_addr >> 8, phy_addr & 0xff, 17);
+
+			/*
+			 * If the resolve bit 11 isn't set, see if
+			 * autoneg is turned off (bit 12, reg 0). The
+			 * resolve bit doesn't get set properly when
+			 * autoneg is off, so force it.
+			 */
+			if ((phy_status & (1 << 11)) == 0) {
+				int auto_status =
+				    cvmx_mdio_read(phy_addr >> 8,
+						   phy_addr & 0xff, 0);
+				if ((auto_status & (1 << 12)) == 0)
+					phy_status |= 1 << 11;
+			}
+
+			/*
+			 * Only return a link if the PHY has finished
+			 * auto negotiation and set the resolved bit
+			 * (bit 11)
+			 */
+			if (phy_status & (1 << 11)) {
+				result.s.link_up = 1;
+				result.s.full_duplex = ((phy_status >> 13) & 1);
+				switch ((phy_status >> 14) & 3) {
+				case 0: /* 10 Mbps */
+					result.s.speed = 10;
+					break;
+				case 1: /* 100 Mbps */
+					result.s.speed = 100;
+					break;
+				case 2: /* 1 Gbps */
+					result.s.speed = 1000;
+					break;
+				case 3: /* Illegal */
+					result.u64 = 0;
+					break;
+				}
+			}
+		}
+	} else if (OCTEON_IS_MODEL(OCTEON_CN3XXX)
+		   || OCTEON_IS_MODEL(OCTEON_CN58XX)
+		   || OCTEON_IS_MODEL(OCTEON_CN50XX)) {
+		/*
+		 * We don't have a PHY address, so attempt to use
+		 * in-band status. It is really important that boards
+		 * not supporting in-band status never get
+		 * here. Reading broken in-band status tends to do bad
+		 * things
+		 */
+		union cvmx_gmxx_rxx_rx_inbnd inband_status;
+		int interface = cvmx_helper_get_interface_num(ipd_port);
+		int index = cvmx_helper_get_interface_index_num(ipd_port);
+		inband_status.u64 =
+		    cvmx_read_csr(CVMX_GMXX_RXX_RX_INBND(index, interface));
+
+		result.s.link_up = inband_status.s.status;
+		result.s.full_duplex = inband_status.s.duplex;
+		switch (inband_status.s.speed) {
+		case 0: /* 10 Mbps */
+			result.s.speed = 10;
+			break;
+		case 1: /* 100 Mbps */
+			result.s.speed = 100;
+			break;
+		case 2: /* 1 Gbps */
+			result.s.speed = 1000;
+			break;
+		case 3: /* Illegal */
+			result.u64 = 0;
+			break;
+		}
+	} else {
+		/*
+		 * We don't have a PHY address and we don't have
+		 * in-band status. There is no way to determine the
+		 * link speed. Return down assuming this port isn't
+		 * wired
+		 */
+		result.u64 = 0;
+	}
+
+	/* If link is down, return all fields as zero. */
+	if (!result.s.link_up)
+		result.u64 = 0;
+
+	return result;
+}
+
+/**
+ * This function as a board specific method of changing the PHY
+ * speed, duplex, and auto-negotiation. This programs the PHY and
+ * not Octeon. This can be used to force Octeon's links to
+ * specific settings.
+ *
+ * @phy_addr:  The address of the PHY to program
+ * @enable_autoneg:
+ *		    Non zero if you want to enable auto-negotiation.
+ * @link_info: Link speed to program. If the speed is zero and auto-negotiation
+ *		    is enabled, all possible negotiation speeds are advertised.
+ *
+ * Returns Zero on success, negative on failure
+ */
+int cvmx_helper_board_link_set_phy(int phy_addr,
+				   cvmx_helper_board_set_phy_link_flags_types_t
+				   link_flags,
+				   cvmx_helper_link_info_t link_info)
+{
+
+	/* Set the flow control settings based on link_flags */
+	if ((link_flags & set_phy_link_flags_flow_control_mask) !=
+	    set_phy_link_flags_flow_control_dont_touch) {
+		cvmx_mdio_phy_reg_autoneg_adver_t reg_autoneg_adver;
+		reg_autoneg_adver.u16 =
+		    cvmx_mdio_read(phy_addr >> 8, phy_addr & 0xff,
+				   CVMX_MDIO_PHY_REG_AUTONEG_ADVER);
+		reg_autoneg_adver.s.asymmetric_pause =
+		    (link_flags & set_phy_link_flags_flow_control_mask) ==
+		    set_phy_link_flags_flow_control_enable;
+		reg_autoneg_adver.s.pause =
+		    (link_flags & set_phy_link_flags_flow_control_mask) ==
+		    set_phy_link_flags_flow_control_enable;
+		cvmx_mdio_write(phy_addr >> 8, phy_addr & 0xff,
+				CVMX_MDIO_PHY_REG_AUTONEG_ADVER,
+				reg_autoneg_adver.u16);
+	}
+
+	/* If speed isn't set and autoneg is on advertise all supported modes */
+	if ((link_flags & set_phy_link_flags_autoneg)
+	    && (link_info.s.speed == 0)) {
+		cvmx_mdio_phy_reg_control_t reg_control;
+		cvmx_mdio_phy_reg_status_t reg_status;
+		cvmx_mdio_phy_reg_autoneg_adver_t reg_autoneg_adver;
+		cvmx_mdio_phy_reg_extended_status_t reg_extended_status;
+		cvmx_mdio_phy_reg_control_1000_t reg_control_1000;
+
+		reg_status.u16 =
+		    cvmx_mdio_read(phy_addr >> 8, phy_addr & 0xff,
+				   CVMX_MDIO_PHY_REG_STATUS);
+		reg_autoneg_adver.u16 =
+		    cvmx_mdio_read(phy_addr >> 8, phy_addr & 0xff,
+				   CVMX_MDIO_PHY_REG_AUTONEG_ADVER);
+		reg_autoneg_adver.s.advert_100base_t4 =
+		    reg_status.s.capable_100base_t4;
+		reg_autoneg_adver.s.advert_10base_tx_full =
+		    reg_status.s.capable_10_full;
+		reg_autoneg_adver.s.advert_10base_tx_half =
+		    reg_status.s.capable_10_half;
+		reg_autoneg_adver.s.advert_100base_tx_full =
+		    reg_status.s.capable_100base_x_full;
+		reg_autoneg_adver.s.advert_100base_tx_half =
+		    reg_status.s.capable_100base_x_half;
+		cvmx_mdio_write(phy_addr >> 8, phy_addr & 0xff,
+				CVMX_MDIO_PHY_REG_AUTONEG_ADVER,
+				reg_autoneg_adver.u16);
+		if (reg_status.s.capable_extended_status) {
+			reg_extended_status.u16 =
+			    cvmx_mdio_read(phy_addr >> 8, phy_addr & 0xff,
+					   CVMX_MDIO_PHY_REG_EXTENDED_STATUS);
+			reg_control_1000.u16 =
+			    cvmx_mdio_read(phy_addr >> 8, phy_addr & 0xff,
+					   CVMX_MDIO_PHY_REG_CONTROL_1000);
+			reg_control_1000.s.advert_1000base_t_full =
+			    reg_extended_status.s.capable_1000base_t_full;
+			reg_control_1000.s.advert_1000base_t_half =
+			    reg_extended_status.s.capable_1000base_t_half;
+			cvmx_mdio_write(phy_addr >> 8, phy_addr & 0xff,
+					CVMX_MDIO_PHY_REG_CONTROL_1000,
+					reg_control_1000.u16);
+		}
+		reg_control.u16 =
+		    cvmx_mdio_read(phy_addr >> 8, phy_addr & 0xff,
+				   CVMX_MDIO_PHY_REG_CONTROL);
+		reg_control.s.autoneg_enable = 1;
+		reg_control.s.restart_autoneg = 1;
+		cvmx_mdio_write(phy_addr >> 8, phy_addr & 0xff,
+				CVMX_MDIO_PHY_REG_CONTROL, reg_control.u16);
+	} else if ((link_flags & set_phy_link_flags_autoneg)) {
+		cvmx_mdio_phy_reg_control_t reg_control;
+		cvmx_mdio_phy_reg_status_t reg_status;
+		cvmx_mdio_phy_reg_autoneg_adver_t reg_autoneg_adver;
+		cvmx_mdio_phy_reg_control_1000_t reg_control_1000;
+
+		reg_status.u16 =
+		    cvmx_mdio_read(phy_addr >> 8, phy_addr & 0xff,
+				   CVMX_MDIO_PHY_REG_STATUS);
+		reg_autoneg_adver.u16 =
+		    cvmx_mdio_read(phy_addr >> 8, phy_addr & 0xff,
+				   CVMX_MDIO_PHY_REG_AUTONEG_ADVER);
+		reg_autoneg_adver.s.advert_100base_t4 = 0;
+		reg_autoneg_adver.s.advert_10base_tx_full = 0;
+		reg_autoneg_adver.s.advert_10base_tx_half = 0;
+		reg_autoneg_adver.s.advert_100base_tx_full = 0;
+		reg_autoneg_adver.s.advert_100base_tx_half = 0;
+		if (reg_status.s.capable_extended_status) {
+			reg_control_1000.u16 =
+			    cvmx_mdio_read(phy_addr >> 8, phy_addr & 0xff,
+					   CVMX_MDIO_PHY_REG_CONTROL_1000);
+			reg_control_1000.s.advert_1000base_t_full = 0;
+			reg_control_1000.s.advert_1000base_t_half = 0;
+		}
+		switch (link_info.s.speed) {
+		case 10:
+			reg_autoneg_adver.s.advert_10base_tx_full =
+			    link_info.s.full_duplex;
+			reg_autoneg_adver.s.advert_10base_tx_half =
+			    !link_info.s.full_duplex;
+			break;
+		case 100:
+			reg_autoneg_adver.s.advert_100base_tx_full =
+			    link_info.s.full_duplex;
+			reg_autoneg_adver.s.advert_100base_tx_half =
+			    !link_info.s.full_duplex;
+			break;
+		case 1000:
+			reg_control_1000.s.advert_1000base_t_full =
+			    link_info.s.full_duplex;
+			reg_control_1000.s.advert_1000base_t_half =
+			    !link_info.s.full_duplex;
+			break;
+		}
+		cvmx_mdio_write(phy_addr >> 8, phy_addr & 0xff,
+				CVMX_MDIO_PHY_REG_AUTONEG_ADVER,
+				reg_autoneg_adver.u16);
+		if (reg_status.s.capable_extended_status)
+			cvmx_mdio_write(phy_addr >> 8, phy_addr & 0xff,
+					CVMX_MDIO_PHY_REG_CONTROL_1000,
+					reg_control_1000.u16);
+		reg_control.u16 =
+		    cvmx_mdio_read(phy_addr >> 8, phy_addr & 0xff,
+				   CVMX_MDIO_PHY_REG_CONTROL);
+		reg_control.s.autoneg_enable = 1;
+		reg_control.s.restart_autoneg = 1;
+		cvmx_mdio_write(phy_addr >> 8, phy_addr & 0xff,
+				CVMX_MDIO_PHY_REG_CONTROL, reg_control.u16);
+	} else {
+		cvmx_mdio_phy_reg_control_t reg_control;
+		reg_control.u16 =
+		    cvmx_mdio_read(phy_addr >> 8, phy_addr & 0xff,
+				   CVMX_MDIO_PHY_REG_CONTROL);
+		reg_control.s.autoneg_enable = 0;
+		reg_control.s.restart_autoneg = 1;
+		reg_control.s.duplex = link_info.s.full_duplex;
+		if (link_info.s.speed == 1000) {
+			reg_control.s.speed_msb = 1;
+			reg_control.s.speed_lsb = 0;
+		} else if (link_info.s.speed == 100) {
+			reg_control.s.speed_msb = 0;
+			reg_control.s.speed_lsb = 1;
+		} else if (link_info.s.speed == 10) {
+			reg_control.s.speed_msb = 0;
+			reg_control.s.speed_lsb = 0;
+		}
+		cvmx_mdio_write(phy_addr >> 8, phy_addr & 0xff,
+				CVMX_MDIO_PHY_REG_CONTROL, reg_control.u16);
+	}
+	return 0;
+}
+
+/**
+ * This function is called by cvmx_helper_interface_probe() after it
+ * determines the number of ports Octeon can support on a specific
+ * interface. This function is the per board location to override
+ * this value. It is called with the number of ports Octeon might
+ * support and should return the number of actual ports on the
+ * board.
+ *
+ * This function must be modifed for every new Octeon board.
+ * Internally it uses switch statements based on the cvmx_sysinfo
+ * data to determine board types and revisions. It relys on the
+ * fact that every Octeon board receives a unique board type
+ * enumeration from the bootloader.
+ *
+ * @interface: Interface to probe
+ * @supported_ports:
+ *		    Number of ports Octeon supports.
+ *
+ * Returns Number of ports the actual board supports. Many times this will
+ *	   simple be "support_ports".
+ */
+int __cvmx_helper_board_interface_probe(int interface, int supported_ports)
+{
+	switch (cvmx_sysinfo_get()->board_type) {
+	case CVMX_BOARD_TYPE_CN3005_EVB_HS5:
+		if (interface == 0)
+			return 2;
+		break;
+	case CVMX_BOARD_TYPE_BBGW_REF:
+		if (interface == 0)
+			return 2;
+		break;
+	case CVMX_BOARD_TYPE_NIC_XLE_4G:
+		if (interface == 0)
+			return 0;
+		break;
+		/* The 2nd interface on the EBH5600 is connected to the Marvel switch,
+		   which we don't support. Disable ports connected to it */
+	case CVMX_BOARD_TYPE_EBH5600:
+		if (interface == 1)
+			return 0;
+		break;
+	}
+	return supported_ports;
+}
+
+/**
+ * Enable packet input/output from the hardware. This function is
+ * called after by cvmx_helper_packet_hardware_enable() to
+ * perform board specific initialization. For most boards
+ * nothing is needed.
+ *
+ * @interface: Interface to enable
+ *
+ * Returns Zero on success, negative on failure
+ */
+int __cvmx_helper_board_hardware_enable(int interface)
+{
+	if (cvmx_sysinfo_get()->board_type == CVMX_BOARD_TYPE_CN3005_EVB_HS5) {
+		if (interface == 0) {
+			/* Different config for switch port */
+			cvmx_write_csr(CVMX_ASXX_TX_CLK_SETX(1, interface), 0);
+			cvmx_write_csr(CVMX_ASXX_RX_CLK_SETX(1, interface), 0);
+			/*
+			 * Boards with gigabit WAN ports need a
+			 * different setting that is compatible with
+			 * 100 Mbit settings
+			 */
+			cvmx_write_csr(CVMX_ASXX_TX_CLK_SETX(0, interface),
+				       0xc);
+			cvmx_write_csr(CVMX_ASXX_RX_CLK_SETX(0, interface),
+				       0xc);
+		}
+	} else if (cvmx_sysinfo_get()->board_type ==
+		   CVMX_BOARD_TYPE_CN3010_EVB_HS5) {
+		/*
+		 * Broadcom PHYs require differnet ASX
+		 * clocks. Unfortunately many boards don't define a
+		 * new board Id and simply mangle the
+		 * CN3010_EVB_HS5
+		 */
+		if (interface == 0) {
+			/*
+			 * Some boards use a hacked up bootloader that
+			 * identifies them as CN3010_EVB_HS5
+			 * evaluation boards.  This leads to all kinds
+			 * of configuration problems.  Detect one
+			 * case, and print warning, while trying to do
+			 * the right thing.
+			 */
+			int phy_addr = cvmx_helper_board_get_mii_address(0);
+			if (phy_addr != -1) {
+				int phy_identifier =
+				    cvmx_mdio_read(phy_addr >> 8,
+						   phy_addr & 0xff, 0x2);
+				/* Is it a Broadcom PHY? */
+				if (phy_identifier == 0x0143) {
+					cvmx_dprintf("\n");
+					cvmx_dprintf("ERROR:\n");
+					cvmx_dprintf
+					    ("ERROR: Board type is CVMX_BOARD_TYPE_CN3010_EVB_HS5, but Broadcom PHY found.\n");
+					cvmx_dprintf
+					    ("ERROR: The board type is mis-configured, and software malfunctions are likely.\n");
+					cvmx_dprintf
+					    ("ERROR: All boards require a unique board type to identify them.\n");
+					cvmx_dprintf("ERROR:\n");
+					cvmx_dprintf("\n");
+					cvmx_wait(1000000000);
+					cvmx_write_csr(CVMX_ASXX_RX_CLK_SETX
+						       (0, interface), 5);
+					cvmx_write_csr(CVMX_ASXX_TX_CLK_SETX
+						       (0, interface), 5);
+				}
+			}
+		}
+	} else if (cvmx_sysinfo_get()->board_type ==
+			CVMX_BOARD_TYPE_UBNT_E100) {
+		cvmx_write_csr(CVMX_ASXX_RX_CLK_SETX(0, interface), 0);
+		cvmx_write_csr(CVMX_ASXX_TX_CLK_SETX(0, interface), 0x10);
+		cvmx_write_csr(CVMX_ASXX_RX_CLK_SETX(1, interface), 0);
+		cvmx_write_csr(CVMX_ASXX_TX_CLK_SETX(1, interface), 0x10);
+		cvmx_write_csr(CVMX_ASXX_RX_CLK_SETX(2, interface), 0);
+		cvmx_write_csr(CVMX_ASXX_TX_CLK_SETX(2, interface), 0x10);
+	}
+	return 0;
+}
+
+/**
+ * Get the clock type used for the USB block based on board type.
+ * Used by the USB code for auto configuration of clock type.
+ *
+ * Return USB clock type enumeration
+ */
+enum cvmx_helper_board_usb_clock_types __cvmx_helper_board_usb_get_clock_type(void)
+{
+	switch (cvmx_sysinfo_get()->board_type) {
+	case CVMX_BOARD_TYPE_BBGW_REF:
+	case CVMX_BOARD_TYPE_LANAI2_A:
+	case CVMX_BOARD_TYPE_LANAI2_U:
+	case CVMX_BOARD_TYPE_LANAI2_G:
+	case CVMX_BOARD_TYPE_NIC10E_66:
+	case CVMX_BOARD_TYPE_UBNT_E100:
+	case CVMX_BOARD_TYPE_CUST_DSR1000N:
+		return USB_CLOCK_TYPE_CRYSTAL_12;
+	case CVMX_BOARD_TYPE_NIC10E:
+		return USB_CLOCK_TYPE_REF_12;
+	default:
+		break;
+	}
+	/* Most boards except NIC10e use a 12MHz crystal */
+	if (OCTEON_IS_MODEL(OCTEON_FAM_2))
+		return USB_CLOCK_TYPE_CRYSTAL_12;
+	return USB_CLOCK_TYPE_REF_48;
+}

arch/mips/cavium-octeon/executive/cvmx-helper-errata.c

@@ -0,0 +1,73 @@
+/***********************license start***************
+ * Author: Cavium Networks
+ *
+ * Contact: support@caviumnetworks.com
+ * This file is part of the OCTEON SDK
+ *
+ * Copyright (c) 2003-2008 Cavium Networks
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, Version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This file is distributed in the hope that it will be useful, but
+ * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
+ * NONINFRINGEMENT.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this file; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * or visit http://www.gnu.org/licenses/.
+ *
+ * This file may also be available under a different license from Cavium.
+ * Contact Cavium Networks for more information
+ ***********************license end**************************************/
+
+/**
+ *
+ * Fixes and workaround for Octeon chip errata. This file
+ * contains functions called by cvmx-helper to workaround known
+ * chip errata. For the most part, code doesn't need to call
+ * these functions directly.
+ *
+ */
+#include <linux/module.h>
+
+#include <asm/octeon/octeon.h>
+
+#include <asm/octeon/cvmx-helper-jtag.h>
+
+/**
+ * Due to errata G-720, the 2nd order CDR circuit on CN52XX pass
+ * 1 doesn't work properly. The following code disables 2nd order
+ * CDR for the specified QLM.
+ *
+ * @qlm:    QLM to disable 2nd order CDR for.
+ */
+void __cvmx_helper_errata_qlm_disable_2nd_order_cdr(int qlm)
+{
+	int lane;
+	cvmx_helper_qlm_jtag_init();
+	/* We need to load all four lanes of the QLM, a total of 1072 bits */
+	for (lane = 0; lane < 4; lane++) {
+		/*
+		 * Each lane has 268 bits. We need to set
+		 * cfg_cdr_incx<67:64> = 3 and cfg_cdr_secord<77> =
+		 * 1. All other bits are zero. Bits go in LSB first,
+		 * so start off with the zeros for bits <63:0>.
+		 */
+		cvmx_helper_qlm_jtag_shift_zeros(qlm, 63 - 0 + 1);
+		/* cfg_cdr_incx<67:64>=3 */
+		cvmx_helper_qlm_jtag_shift(qlm, 67 - 64 + 1, 3);
+		/* Zeros for bits <76:68> */
+		cvmx_helper_qlm_jtag_shift_zeros(qlm, 76 - 68 + 1);
+		/* cfg_cdr_secord<77>=1 */
+		cvmx_helper_qlm_jtag_shift(qlm, 77 - 77 + 1, 1);
+		/* Zeros for bits <267:78> */
+		cvmx_helper_qlm_jtag_shift_zeros(qlm, 267 - 78 + 1);
+	}
+	cvmx_helper_qlm_jtag_update(qlm);
+}
+EXPORT_SYMBOL(__cvmx_helper_errata_qlm_disable_2nd_order_cdr);

arch/mips/cavium-octeon/executive/cvmx-helper-jtag.c

@@ -0,0 +1,144 @@
+
+/***********************license start***************
+ * Author: Cavium Networks
+ *
+ * Contact: support@caviumnetworks.com
+ * This file is part of the OCTEON SDK
+ *
+ * Copyright (c) 2003-2008 Cavium Networks
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, Version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This file is distributed in the hope that it will be useful, but
+ * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
+ * NONINFRINGEMENT.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this file; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * or visit http://www.gnu.org/licenses/.
+ *
+ * This file may also be available under a different license from Cavium.
+ * Contact Cavium Networks for more information
+ ***********************license end**************************************/
+
+/**
+ *
+ * Helper utilities for qlm_jtag.
+ *
+ */
+
+#include <asm/octeon/octeon.h>
+#include <asm/octeon/cvmx-helper-jtag.h>
+
+
+/**
+ * Initialize the internal QLM JTAG logic to allow programming
+ * of the JTAG chain by the cvmx_helper_qlm_jtag_*() functions.
+ * These functions should only be used at the direction of Cavium
+ * Networks. Programming incorrect values into the JTAG chain
+ * can cause chip damage.
+ */
+void cvmx_helper_qlm_jtag_init(void)
+{
+	union cvmx_ciu_qlm_jtgc jtgc;
+	uint32_t clock_div = 0;
+	uint32_t divisor = cvmx_sysinfo_get()->cpu_clock_hz / (25 * 1000000);
+	divisor = (divisor - 1) >> 2;
+	/* Convert the divisor into a power of 2 shift */
+	while (divisor) {
+		clock_div++;
+		divisor = divisor >> 1;
+	}
+
+	/*
+	 * Clock divider for QLM JTAG operations.  eclk is divided by
+	 * 2^(CLK_DIV + 2)
+	 */
+	jtgc.u64 = 0;
+	jtgc.s.clk_div = clock_div;
+	jtgc.s.mux_sel = 0;
+	if (OCTEON_IS_MODEL(OCTEON_CN52XX))
+		jtgc.s.bypass = 0x3;
+	else
+		jtgc.s.bypass = 0xf;
+	cvmx_write_csr(CVMX_CIU_QLM_JTGC, jtgc.u64);
+	cvmx_read_csr(CVMX_CIU_QLM_JTGC);
+}
+
+/**
+ * Write up to 32bits into the QLM jtag chain. Bits are shifted
+ * into the MSB and out the LSB, so you should shift in the low
+ * order bits followed by the high order bits. The JTAG chain is
+ * 4 * 268 bits long, or 1072.
+ *
+ * @qlm:    QLM to shift value into
+ * @bits:   Number of bits to shift in (1-32).
+ * @data:   Data to shift in. Bit 0 enters the chain first, followed by
+ *		 bit 1, etc.
+ *
+ * Returns The low order bits of the JTAG chain that shifted out of the
+ *	   circle.
+ */
+uint32_t cvmx_helper_qlm_jtag_shift(int qlm, int bits, uint32_t data)
+{
+	union cvmx_ciu_qlm_jtgd jtgd;
+	jtgd.u64 = 0;
+	jtgd.s.shift = 1;
+	jtgd.s.shft_cnt = bits - 1;
+	jtgd.s.shft_reg = data;
+	if (!OCTEON_IS_MODEL(OCTEON_CN56XX_PASS1_X))
+		jtgd.s.select = 1 << qlm;
+	cvmx_write_csr(CVMX_CIU_QLM_JTGD, jtgd.u64);
+	do {
+		jtgd.u64 = cvmx_read_csr(CVMX_CIU_QLM_JTGD);
+	} while (jtgd.s.shift);
+	return jtgd.s.shft_reg >> (32 - bits);
+}
+
+/**
+ * Shift long sequences of zeros into the QLM JTAG chain. It is
+ * common to need to shift more than 32 bits of zeros into the
+ * chain. This function is a convience wrapper around
+ * cvmx_helper_qlm_jtag_shift() to shift more than 32 bits of
+ * zeros at a time.
+ *
+ * @qlm:    QLM to shift zeros into
+ * @bits:
+ */
+void cvmx_helper_qlm_jtag_shift_zeros(int qlm, int bits)
+{
+	while (bits > 0) {
+		int n = bits;
+		if (n > 32)
+			n = 32;
+		cvmx_helper_qlm_jtag_shift(qlm, n, 0);
+		bits -= n;
+	}
+}
+
+/**
+ * Program the QLM JTAG chain into all lanes of the QLM. You must
+ * have already shifted in 268*4, or 1072 bits into the JTAG
+ * chain. Updating invalid values can possibly cause chip damage.
+ *
+ * @qlm:    QLM to program
+ */
+void cvmx_helper_qlm_jtag_update(int qlm)
+{
+	union cvmx_ciu_qlm_jtgd jtgd;
+
+	/* Update the new data */
+	jtgd.u64 = 0;
+	jtgd.s.update = 1;
+	if (!OCTEON_IS_MODEL(OCTEON_CN56XX_PASS1_X))
+		jtgd.s.select = 1 << qlm;
+	cvmx_write_csr(CVMX_CIU_QLM_JTGD, jtgd.u64);
+	do {
+		jtgd.u64 = cvmx_read_csr(CVMX_CIU_QLM_JTGD);
+	} while (jtgd.s.update);
+}

arch/mips/cavium-octeon/executive/cvmx-helper-loop.c

@@ -0,0 +1,85 @@
+/***********************license start***************
+ * Author: Cavium Networks
+ *
+ * Contact: support@caviumnetworks.com
+ * This file is part of the OCTEON SDK
+ *
+ * Copyright (c) 2003-2008 Cavium Networks
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, Version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This file is distributed in the hope that it will be useful, but
+ * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
+ * NONINFRINGEMENT.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this file; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * or visit http://www.gnu.org/licenses/.
+ *
+ * This file may also be available under a different license from Cavium.
+ * Contact Cavium Networks for more information
+ ***********************license end**************************************/
+
+/*
+ * Functions for LOOP initialization, configuration,
+ * and monitoring.
+ */
+#include <asm/octeon/octeon.h>
+
+#include <asm/octeon/cvmx-config.h>
+
+#include <asm/octeon/cvmx-helper.h>
+#include <asm/octeon/cvmx-pip-defs.h>
+
+/**
+ * Probe a LOOP interface and determine the number of ports
+ * connected to it. The LOOP interface should still be down
+ * after this call.
+ *
+ * @interface: Interface to probe
+ *
+ * Returns Number of ports on the interface. Zero to disable.
+ */
+int __cvmx_helper_loop_probe(int interface)
+{
+	union cvmx_ipd_sub_port_fcs ipd_sub_port_fcs;
+	int num_ports = 4;
+	int port;
+
+	/* We need to disable length checking so packet < 64 bytes and jumbo
+	   frames don't get errors */
+	for (port = 0; port < num_ports; port++) {
+		union cvmx_pip_prt_cfgx port_cfg;
+		int ipd_port = cvmx_helper_get_ipd_port(interface, port);
+		port_cfg.u64 = cvmx_read_csr(CVMX_PIP_PRT_CFGX(ipd_port));
+		port_cfg.s.maxerr_en = 0;
+		port_cfg.s.minerr_en = 0;
+		cvmx_write_csr(CVMX_PIP_PRT_CFGX(ipd_port), port_cfg.u64);
+	}
+
+	/* Disable FCS stripping for loopback ports */
+	ipd_sub_port_fcs.u64 = cvmx_read_csr(CVMX_IPD_SUB_PORT_FCS);
+	ipd_sub_port_fcs.s.port_bit2 = 0;
+	cvmx_write_csr(CVMX_IPD_SUB_PORT_FCS, ipd_sub_port_fcs.u64);
+	return num_ports;
+}
+
+/**
+ * Bringup and enable a LOOP interface. After this call packet
+ * I/O should be fully functional. This is called with IPD
+ * enabled but PKO disabled.
+ *
+ * @interface: Interface to bring up
+ *
+ * Returns Zero on success, negative on failure
+ */
+int __cvmx_helper_loop_enable(int interface)
+{
+	/* Do nothing. */
+	return 0;
+}

arch/mips/cavium-octeon/executive/cvmx-helper-npi.c

@@ -0,0 +1,113 @@
+/***********************license start***************
+ * Author: Cavium Networks
+ *
+ * Contact: support@caviumnetworks.com
+ * This file is part of the OCTEON SDK
+ *
+ * Copyright (c) 2003-2008 Cavium Networks
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, Version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This file is distributed in the hope that it will be useful, but
+ * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
+ * NONINFRINGEMENT.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this file; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * or visit http://www.gnu.org/licenses/.
+ *
+ * This file may also be available under a different license from Cavium.
+ * Contact Cavium Networks for more information
+ ***********************license end**************************************/
+
+/*
+ * Functions for NPI initialization, configuration,
+ * and monitoring.
+ */
+#include <asm/octeon/octeon.h>
+
+#include <asm/octeon/cvmx-config.h>
+
+#include <asm/octeon/cvmx-helper.h>
+
+#include <asm/octeon/cvmx-pip-defs.h>
+
+/**
+ * Probe a NPI interface and determine the number of ports
+ * connected to it. The NPI interface should still be down
+ * after this call.
+ *
+ * @interface: Interface to probe
+ *
+ * Returns Number of ports on the interface. Zero to disable.
+ */
+int __cvmx_helper_npi_probe(int interface)
+{
+#if CVMX_PKO_QUEUES_PER_PORT_PCI > 0
+	if (OCTEON_IS_MODEL(OCTEON_CN38XX) || OCTEON_IS_MODEL(OCTEON_CN58XX))
+		return 4;
+	else if (OCTEON_IS_MODEL(OCTEON_CN56XX)
+		 && !OCTEON_IS_MODEL(OCTEON_CN56XX_PASS1_X))
+		/* The packet engines didn't exist before pass 2 */
+		return 4;
+	else if (OCTEON_IS_MODEL(OCTEON_CN52XX)
+		 && !OCTEON_IS_MODEL(OCTEON_CN52XX_PASS1_X))
+		/* The packet engines didn't exist before pass 2 */
+		return 4;
+#if 0
+	/*
+	 * Technically CN30XX, CN31XX, and CN50XX contain packet
+	 * engines, but nobody ever uses them. Since this is the case,
+	 * we disable them here.
+	 */
+	else if (OCTEON_IS_MODEL(OCTEON_CN31XX)
+		 || OCTEON_IS_MODEL(OCTEON_CN50XX))
+		return 2;
+	else if (OCTEON_IS_MODEL(OCTEON_CN30XX))
+		return 1;
+#endif
+#endif
+	return 0;
+}
+
+/**
+ * Bringup and enable a NPI interface. After this call packet
+ * I/O should be fully functional. This is called with IPD
+ * enabled but PKO disabled.
+ *
+ * @interface: Interface to bring up
+ *
+ * Returns Zero on success, negative on failure
+ */
+int __cvmx_helper_npi_enable(int interface)
+{
+	/*
+	 * On CN50XX, CN52XX, and CN56XX we need to disable length
+	 * checking so packet < 64 bytes and jumbo frames don't get
+	 * errors.
+	 */
+	if (!OCTEON_IS_MODEL(OCTEON_CN3XXX) &&
+	    !OCTEON_IS_MODEL(OCTEON_CN58XX)) {
+		int num_ports = cvmx_helper_ports_on_interface(interface);
+		int port;
+		for (port = 0; port < num_ports; port++) {
+			union cvmx_pip_prt_cfgx port_cfg;
+			int ipd_port =
+			    cvmx_helper_get_ipd_port(interface, port);
+			port_cfg.u64 =
+			    cvmx_read_csr(CVMX_PIP_PRT_CFGX(ipd_port));
+			port_cfg.s.maxerr_en = 0;
+			port_cfg.s.minerr_en = 0;
+			cvmx_write_csr(CVMX_PIP_PRT_CFGX(ipd_port),
+				       port_cfg.u64);
+		}
+	}
+
+	/* Enables are controlled by the remote host, so nothing to do here */
+	return 0;
+}

arch/mips/cavium-octeon/executive/cvmx-helper-rgmii.c

@@ -0,0 +1,526 @@
+/***********************license start***************
+ * Author: Cavium Networks
+ *
+ * Contact: support@caviumnetworks.com
+ * This file is part of the OCTEON SDK
+ *
+ * Copyright (c) 2003-2008 Cavium Networks
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, Version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This file is distributed in the hope that it will be useful, but
+ * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
+ * NONINFRINGEMENT.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this file; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * or visit http://www.gnu.org/licenses/.
+ *
+ * This file may also be available under a different license from Cavium.
+ * Contact Cavium Networks for more information
+ ***********************license end**************************************/
+
+/*
+ * Functions for RGMII/GMII/MII initialization, configuration,
+ * and monitoring.
+ */
+#include <asm/octeon/octeon.h>
+
+#include <asm/octeon/cvmx-config.h>
+
+
+#include <asm/octeon/cvmx-mdio.h>
+#include <asm/octeon/cvmx-pko.h>
+#include <asm/octeon/cvmx-helper.h>
+#include <asm/octeon/cvmx-helper-board.h>
+
+#include <asm/octeon/cvmx-npi-defs.h>
+#include <asm/octeon/cvmx-gmxx-defs.h>
+#include <asm/octeon/cvmx-asxx-defs.h>
+#include <asm/octeon/cvmx-dbg-defs.h>
+
+void __cvmx_interrupt_gmxx_enable(int interface);
+void __cvmx_interrupt_asxx_enable(int block);
+
+/**
+ * Probe RGMII ports and determine the number present
+ *
+ * @interface: Interface to probe
+ *
+ * Returns Number of RGMII/GMII/MII ports (0-4).
+ */
+int __cvmx_helper_rgmii_probe(int interface)
+{
+	int num_ports = 0;
+	union cvmx_gmxx_inf_mode mode;
+	mode.u64 = cvmx_read_csr(CVMX_GMXX_INF_MODE(interface));
+
+	if (mode.s.type) {
+		if (OCTEON_IS_MODEL(OCTEON_CN38XX)
+		    || OCTEON_IS_MODEL(OCTEON_CN58XX)) {
+			cvmx_dprintf("ERROR: RGMII initialize called in "
+				     "SPI interface\n");
+		} else if (OCTEON_IS_MODEL(OCTEON_CN31XX)
+			   || OCTEON_IS_MODEL(OCTEON_CN30XX)
+			   || OCTEON_IS_MODEL(OCTEON_CN50XX)) {
+			/*
+			 * On these chips "type" says we're in
+			 * GMII/MII mode. This limits us to 2 ports
+			 */
+			num_ports = 2;
+		} else {
+			cvmx_dprintf("ERROR: Unsupported Octeon model in %s\n",
+				     __func__);
+		}
+	} else {
+		if (OCTEON_IS_MODEL(OCTEON_CN38XX)
+		    || OCTEON_IS_MODEL(OCTEON_CN58XX)) {
+			num_ports = 4;
+		} else if (OCTEON_IS_MODEL(OCTEON_CN31XX)
+			   || OCTEON_IS_MODEL(OCTEON_CN30XX)
+			   || OCTEON_IS_MODEL(OCTEON_CN50XX)) {
+			num_ports = 3;
+		} else {
+			cvmx_dprintf("ERROR: Unsupported Octeon model in %s\n",
+				     __func__);
+		}
+	}
+	return num_ports;
+}
+
+/**
+ * Put an RGMII interface in loopback mode. Internal packets sent
+ * out will be received back again on the same port. Externally
+ * received packets will echo back out.
+ *
+ * @port:   IPD port number to loop.
+ */
+void cvmx_helper_rgmii_internal_loopback(int port)
+{
+	int interface = (port >> 4) & 1;
+	int index = port & 0xf;
+	uint64_t tmp;
+
+	union cvmx_gmxx_prtx_cfg gmx_cfg;
+	gmx_cfg.u64 = 0;
+	gmx_cfg.s.duplex = 1;
+	gmx_cfg.s.slottime = 1;
+	gmx_cfg.s.speed = 1;
+	cvmx_write_csr(CVMX_GMXX_TXX_CLK(index, interface), 1);
+	cvmx_write_csr(CVMX_GMXX_TXX_SLOT(index, interface), 0x200);
+	cvmx_write_csr(CVMX_GMXX_TXX_BURST(index, interface), 0x2000);
+	cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), gmx_cfg.u64);
+	tmp = cvmx_read_csr(CVMX_ASXX_PRT_LOOP(interface));
+	cvmx_write_csr(CVMX_ASXX_PRT_LOOP(interface), (1 << index) | tmp);
+	tmp = cvmx_read_csr(CVMX_ASXX_TX_PRT_EN(interface));
+	cvmx_write_csr(CVMX_ASXX_TX_PRT_EN(interface), (1 << index) | tmp);
+	tmp = cvmx_read_csr(CVMX_ASXX_RX_PRT_EN(interface));
+	cvmx_write_csr(CVMX_ASXX_RX_PRT_EN(interface), (1 << index) | tmp);
+	gmx_cfg.s.en = 1;
+	cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), gmx_cfg.u64);
+}
+
+/**
+ * Workaround ASX setup errata with CN38XX pass1
+ *
+ * @interface: Interface to setup
+ * @port:      Port to setup (0..3)
+ * @cpu_clock_hz:
+ *		    Chip frequency in Hertz
+ *
+ * Returns Zero on success, negative on failure
+ */
+static int __cvmx_helper_errata_asx_pass1(int interface, int port,
+					  int cpu_clock_hz)
+{
+	/* Set hi water mark as per errata GMX-4 */
+	if (cpu_clock_hz >= 325000000 && cpu_clock_hz < 375000000)
+		cvmx_write_csr(CVMX_ASXX_TX_HI_WATERX(port, interface), 12);
+	else if (cpu_clock_hz >= 375000000 && cpu_clock_hz < 437000000)
+		cvmx_write_csr(CVMX_ASXX_TX_HI_WATERX(port, interface), 11);
+	else if (cpu_clock_hz >= 437000000 && cpu_clock_hz < 550000000)
+		cvmx_write_csr(CVMX_ASXX_TX_HI_WATERX(port, interface), 10);
+	else if (cpu_clock_hz >= 550000000 && cpu_clock_hz < 687000000)
+		cvmx_write_csr(CVMX_ASXX_TX_HI_WATERX(port, interface), 9);
+	else
+		cvmx_dprintf("Illegal clock frequency (%d). "
+			"CVMX_ASXX_TX_HI_WATERX not set\n", cpu_clock_hz);
+	return 0;
+}
+
+/**
+ * Configure all of the ASX, GMX, and PKO regsiters required
+ * to get RGMII to function on the supplied interface.
+ *
+ * @interface: PKO Interface to configure (0 or 1)
+ *
+ * Returns Zero on success
+ */
+int __cvmx_helper_rgmii_enable(int interface)
+{
+	int num_ports = cvmx_helper_ports_on_interface(interface);
+	int port;
+	struct cvmx_sysinfo *sys_info_ptr = cvmx_sysinfo_get();
+	union cvmx_gmxx_inf_mode mode;
+	union cvmx_asxx_tx_prt_en asx_tx;
+	union cvmx_asxx_rx_prt_en asx_rx;
+
+	mode.u64 = cvmx_read_csr(CVMX_GMXX_INF_MODE(interface));
+
+	if (mode.s.en == 0)
+		return -1;
+	if ((OCTEON_IS_MODEL(OCTEON_CN38XX) ||
+	     OCTEON_IS_MODEL(OCTEON_CN58XX)) && mode.s.type == 1)
+		/* Ignore SPI interfaces */
+		return -1;
+
+	/* Configure the ASX registers needed to use the RGMII ports */
+	asx_tx.u64 = 0;
+	asx_tx.s.prt_en = cvmx_build_mask(num_ports);
+	cvmx_write_csr(CVMX_ASXX_TX_PRT_EN(interface), asx_tx.u64);
+
+	asx_rx.u64 = 0;
+	asx_rx.s.prt_en = cvmx_build_mask(num_ports);
+	cvmx_write_csr(CVMX_ASXX_RX_PRT_EN(interface), asx_rx.u64);
+
+	/* Configure the GMX registers needed to use the RGMII ports */
+	for (port = 0; port < num_ports; port++) {
+		/* Setting of CVMX_GMXX_TXX_THRESH has been moved to
+		   __cvmx_helper_setup_gmx() */
+
+		if (cvmx_octeon_is_pass1())
+			__cvmx_helper_errata_asx_pass1(interface, port,
+						       sys_info_ptr->
+						       cpu_clock_hz);
+		else {
+			/*
+			 * Configure more flexible RGMII preamble
+			 * checking. Pass 1 doesn't support this
+			 * feature.
+			 */
+			union cvmx_gmxx_rxx_frm_ctl frm_ctl;
+			frm_ctl.u64 =
+			    cvmx_read_csr(CVMX_GMXX_RXX_FRM_CTL
+					  (port, interface));
+			/* New field, so must be compile time */
+			frm_ctl.s.pre_free = 1;
+			cvmx_write_csr(CVMX_GMXX_RXX_FRM_CTL(port, interface),
+				       frm_ctl.u64);
+		}
+
+		/*
+		 * Each pause frame transmitted will ask for about 10M
+		 * bit times before resume.  If buffer space comes
+		 * available before that time has expired, an XON
+		 * pause frame (0 time) will be transmitted to restart
+		 * the flow.
+		 */
+		cvmx_write_csr(CVMX_GMXX_TXX_PAUSE_PKT_TIME(port, interface),
+			       20000);
+		cvmx_write_csr(CVMX_GMXX_TXX_PAUSE_PKT_INTERVAL
+			       (port, interface), 19000);
+
+		if (OCTEON_IS_MODEL(OCTEON_CN50XX)) {
+			cvmx_write_csr(CVMX_ASXX_TX_CLK_SETX(port, interface),
+				       16);
+			cvmx_write_csr(CVMX_ASXX_RX_CLK_SETX(port, interface),
+				       16);
+		} else {
+			cvmx_write_csr(CVMX_ASXX_TX_CLK_SETX(port, interface),
+				       24);
+			cvmx_write_csr(CVMX_ASXX_RX_CLK_SETX(port, interface),
+				       24);
+		}
+	}
+
+	__cvmx_helper_setup_gmx(interface, num_ports);
+
+	/* enable the ports now */
+	for (port = 0; port < num_ports; port++) {
+		union cvmx_gmxx_prtx_cfg gmx_cfg;
+		cvmx_helper_link_autoconf(cvmx_helper_get_ipd_port
+					  (interface, port));
+		gmx_cfg.u64 =
+		    cvmx_read_csr(CVMX_GMXX_PRTX_CFG(port, interface));
+		gmx_cfg.s.en = 1;
+		cvmx_write_csr(CVMX_GMXX_PRTX_CFG(port, interface),
+			       gmx_cfg.u64);
+	}
+	__cvmx_interrupt_asxx_enable(interface);
+	__cvmx_interrupt_gmxx_enable(interface);
+
+	return 0;
+}
+
+/**
+ * Return the link state of an IPD/PKO port as returned by
+ * auto negotiation. The result of this function may not match
+ * Octeon's link config if auto negotiation has changed since
+ * the last call to cvmx_helper_link_set().
+ *
+ * @ipd_port: IPD/PKO port to query
+ *
+ * Returns Link state
+ */
+cvmx_helper_link_info_t __cvmx_helper_rgmii_link_get(int ipd_port)
+{
+	int interface = cvmx_helper_get_interface_num(ipd_port);
+	int index = cvmx_helper_get_interface_index_num(ipd_port);
+	union cvmx_asxx_prt_loop asxx_prt_loop;
+
+	asxx_prt_loop.u64 = cvmx_read_csr(CVMX_ASXX_PRT_LOOP(interface));
+	if (asxx_prt_loop.s.int_loop & (1 << index)) {
+		/* Force 1Gbps full duplex on internal loopback */
+		cvmx_helper_link_info_t result;
+		result.u64 = 0;
+		result.s.full_duplex = 1;
+		result.s.link_up = 1;
+		result.s.speed = 1000;
+		return result;
+	} else
+		return __cvmx_helper_board_link_get(ipd_port);
+}
+
+/**
+ * Configure an IPD/PKO port for the specified link state. This
+ * function does not influence auto negotiation at the PHY level.
+ * The passed link state must always match the link state returned
+ * by cvmx_helper_link_get(). It is normally best to use
+ * cvmx_helper_link_autoconf() instead.
+ *
+ * @ipd_port:  IPD/PKO port to configure
+ * @link_info: The new link state
+ *
+ * Returns Zero on success, negative on failure
+ */
+int __cvmx_helper_rgmii_link_set(int ipd_port,
+				 cvmx_helper_link_info_t link_info)
+{
+	int result = 0;
+	int interface = cvmx_helper_get_interface_num(ipd_port);
+	int index = cvmx_helper_get_interface_index_num(ipd_port);
+	union cvmx_gmxx_prtx_cfg original_gmx_cfg;
+	union cvmx_gmxx_prtx_cfg new_gmx_cfg;
+	union cvmx_pko_mem_queue_qos pko_mem_queue_qos;
+	union cvmx_pko_mem_queue_qos pko_mem_queue_qos_save[16];
+	union cvmx_gmxx_tx_ovr_bp gmx_tx_ovr_bp;
+	union cvmx_gmxx_tx_ovr_bp gmx_tx_ovr_bp_save;
+	int i;
+
+	/* Ignore speed sets in the simulator */
+	if (cvmx_sysinfo_get()->board_type == CVMX_BOARD_TYPE_SIM)
+		return 0;
+
+	/* Read the current settings so we know the current enable state */
+	original_gmx_cfg.u64 =
+	    cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface));
+	new_gmx_cfg = original_gmx_cfg;
+
+	/* Disable the lowest level RX */
+	cvmx_write_csr(CVMX_ASXX_RX_PRT_EN(interface),
+		       cvmx_read_csr(CVMX_ASXX_RX_PRT_EN(interface)) &
+				     ~(1 << index));
+
+	memset(pko_mem_queue_qos_save, 0, sizeof(pko_mem_queue_qos_save));
+	/* Disable all queues so that TX should become idle */
+	for (i = 0; i < cvmx_pko_get_num_queues(ipd_port); i++) {
+		int queue = cvmx_pko_get_base_queue(ipd_port) + i;
+		cvmx_write_csr(CVMX_PKO_REG_READ_IDX, queue);
+		pko_mem_queue_qos.u64 = cvmx_read_csr(CVMX_PKO_MEM_QUEUE_QOS);
+		pko_mem_queue_qos.s.pid = ipd_port;
+		pko_mem_queue_qos.s.qid = queue;
+		pko_mem_queue_qos_save[i] = pko_mem_queue_qos;
+		pko_mem_queue_qos.s.qos_mask = 0;
+		cvmx_write_csr(CVMX_PKO_MEM_QUEUE_QOS, pko_mem_queue_qos.u64);
+	}
+
+	/* Disable backpressure */
+	gmx_tx_ovr_bp.u64 = cvmx_read_csr(CVMX_GMXX_TX_OVR_BP(interface));
+	gmx_tx_ovr_bp_save = gmx_tx_ovr_bp;
+	gmx_tx_ovr_bp.s.bp &= ~(1 << index);
+	gmx_tx_ovr_bp.s.en |= 1 << index;
+	cvmx_write_csr(CVMX_GMXX_TX_OVR_BP(interface), gmx_tx_ovr_bp.u64);
+	cvmx_read_csr(CVMX_GMXX_TX_OVR_BP(interface));
+
+	/*
+	 * Poll the GMX state machine waiting for it to become
+	 * idle. Preferably we should only change speed when it is
+	 * idle. If it doesn't become idle we will still do the speed
+	 * change, but there is a slight chance that GMX will
+	 * lockup.
+	 */
+	cvmx_write_csr(CVMX_NPI_DBG_SELECT,
+		       interface * 0x800 + index * 0x100 + 0x880);
+	CVMX_WAIT_FOR_FIELD64(CVMX_DBG_DATA, union cvmx_dbg_data, data & 7,
+			==, 0, 10000);
+	CVMX_WAIT_FOR_FIELD64(CVMX_DBG_DATA, union cvmx_dbg_data, data & 0xf,
+			==, 0, 10000);
+
+	/* Disable the port before we make any changes */
+	new_gmx_cfg.s.en = 0;
+	cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), new_gmx_cfg.u64);
+	cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface));
+
+	/* Set full/half duplex */
+	if (cvmx_octeon_is_pass1())
+		/* Half duplex is broken for 38XX Pass 1 */
+		new_gmx_cfg.s.duplex = 1;
+	else if (!link_info.s.link_up)
+		/* Force full duplex on down links */
+		new_gmx_cfg.s.duplex = 1;
+	else
+		new_gmx_cfg.s.duplex = link_info.s.full_duplex;
+
+	/* Set the link speed. Anything unknown is set to 1Gbps */
+	if (link_info.s.speed == 10) {
+		new_gmx_cfg.s.slottime = 0;
+		new_gmx_cfg.s.speed = 0;
+	} else if (link_info.s.speed == 100) {
+		new_gmx_cfg.s.slottime = 0;
+		new_gmx_cfg.s.speed = 0;
+	} else {
+		new_gmx_cfg.s.slottime = 1;
+		new_gmx_cfg.s.speed = 1;
+	}
+
+	/* Adjust the clocks */
+	if (link_info.s.speed == 10) {
+		cvmx_write_csr(CVMX_GMXX_TXX_CLK(index, interface), 50);
+		cvmx_write_csr(CVMX_GMXX_TXX_SLOT(index, interface), 0x40);
+		cvmx_write_csr(CVMX_GMXX_TXX_BURST(index, interface), 0);
+	} else if (link_info.s.speed == 100) {
+		cvmx_write_csr(CVMX_GMXX_TXX_CLK(index, interface), 5);
+		cvmx_write_csr(CVMX_GMXX_TXX_SLOT(index, interface), 0x40);
+		cvmx_write_csr(CVMX_GMXX_TXX_BURST(index, interface), 0);
+	} else {
+		cvmx_write_csr(CVMX_GMXX_TXX_CLK(index, interface), 1);
+		cvmx_write_csr(CVMX_GMXX_TXX_SLOT(index, interface), 0x200);
+		cvmx_write_csr(CVMX_GMXX_TXX_BURST(index, interface), 0x2000);
+	}
+
+	if (OCTEON_IS_MODEL(OCTEON_CN30XX) || OCTEON_IS_MODEL(OCTEON_CN50XX)) {
+		if ((link_info.s.speed == 10) || (link_info.s.speed == 100)) {
+			union cvmx_gmxx_inf_mode mode;
+			mode.u64 = cvmx_read_csr(CVMX_GMXX_INF_MODE(interface));
+
+	/*
+	 * Port	 .en  .type  .p0mii  Configuration
+	 * ----	 ---  -----  ------  -----------------------------------------
+	 *  X	   0	 X	X    All links are disabled.
+	 *  0	   1	 X	0    Port 0 is RGMII
+	 *  0	   1	 X	1    Port 0 is MII
+	 *  1	   1	 0	X    Ports 1 and 2 are configured as RGMII ports.
+	 *  1	   1	 1	X    Port 1: GMII/MII; Port 2: disabled. GMII or
+	 *			     MII port is selected by GMX_PRT1_CFG[SPEED].
+	 */
+
+			/* In MII mode, CLK_CNT = 1. */
+			if (((index == 0) && (mode.s.p0mii == 1))
+			    || ((index != 0) && (mode.s.type == 1))) {
+				cvmx_write_csr(CVMX_GMXX_TXX_CLK
+					       (index, interface), 1);
+			}
+		}
+	}
+
+	/* Do a read to make sure all setup stuff is complete */
+	cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface));
+
+	/* Save the new GMX setting without enabling the port */
+	cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), new_gmx_cfg.u64);
+
+	/* Enable the lowest level RX */
+	cvmx_write_csr(CVMX_ASXX_RX_PRT_EN(interface),
+		       cvmx_read_csr(CVMX_ASXX_RX_PRT_EN(interface)) | (1 <<
+									index));
+
+	/* Re-enable the TX path */
+	for (i = 0; i < cvmx_pko_get_num_queues(ipd_port); i++) {
+		int queue = cvmx_pko_get_base_queue(ipd_port) + i;
+		cvmx_write_csr(CVMX_PKO_REG_READ_IDX, queue);
+		cvmx_write_csr(CVMX_PKO_MEM_QUEUE_QOS,
+			       pko_mem_queue_qos_save[i].u64);
+	}
+
+	/* Restore backpressure */
+	cvmx_write_csr(CVMX_GMXX_TX_OVR_BP(interface), gmx_tx_ovr_bp_save.u64);
+
+	/* Restore the GMX enable state. Port config is complete */
+	new_gmx_cfg.s.en = original_gmx_cfg.s.en;
+	cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), new_gmx_cfg.u64);
+
+	return result;
+}
+
+/**
+ * Configure a port for internal and/or external loopback. Internal loopback
+ * causes packets sent by the port to be received by Octeon. External loopback
+ * causes packets received from the wire to sent out again.
+ *
+ * @ipd_port: IPD/PKO port to loopback.
+ * @enable_internal:
+ *		   Non zero if you want internal loopback
+ * @enable_external:
+ *		   Non zero if you want external loopback
+ *
+ * Returns Zero on success, negative on failure.
+ */
+int __cvmx_helper_rgmii_configure_loopback(int ipd_port, int enable_internal,
+					   int enable_external)
+{
+	int interface = cvmx_helper_get_interface_num(ipd_port);
+	int index = cvmx_helper_get_interface_index_num(ipd_port);
+	int original_enable;
+	union cvmx_gmxx_prtx_cfg gmx_cfg;
+	union cvmx_asxx_prt_loop asxx_prt_loop;
+
+	/* Read the current enable state and save it */
+	gmx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface));
+	original_enable = gmx_cfg.s.en;
+	/* Force port to be disabled */
+	gmx_cfg.s.en = 0;
+	if (enable_internal) {
+		/* Force speed if we're doing internal loopback */
+		gmx_cfg.s.duplex = 1;
+		gmx_cfg.s.slottime = 1;
+		gmx_cfg.s.speed = 1;
+		cvmx_write_csr(CVMX_GMXX_TXX_CLK(index, interface), 1);
+		cvmx_write_csr(CVMX_GMXX_TXX_SLOT(index, interface), 0x200);
+		cvmx_write_csr(CVMX_GMXX_TXX_BURST(index, interface), 0x2000);
+	}
+	cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), gmx_cfg.u64);
+
+	/* Set the loopback bits */
+	asxx_prt_loop.u64 = cvmx_read_csr(CVMX_ASXX_PRT_LOOP(interface));
+	if (enable_internal)
+		asxx_prt_loop.s.int_loop |= 1 << index;
+	else
+		asxx_prt_loop.s.int_loop &= ~(1 << index);
+	if (enable_external)
+		asxx_prt_loop.s.ext_loop |= 1 << index;
+	else
+		asxx_prt_loop.s.ext_loop &= ~(1 << index);
+	cvmx_write_csr(CVMX_ASXX_PRT_LOOP(interface), asxx_prt_loop.u64);
+
+	/* Force enables in internal loopback */
+	if (enable_internal) {
+		uint64_t tmp;
+		tmp = cvmx_read_csr(CVMX_ASXX_TX_PRT_EN(interface));
+		cvmx_write_csr(CVMX_ASXX_TX_PRT_EN(interface),
+			       (1 << index) | tmp);
+		tmp = cvmx_read_csr(CVMX_ASXX_RX_PRT_EN(interface));
+		cvmx_write_csr(CVMX_ASXX_RX_PRT_EN(interface),
+			       (1 << index) | tmp);
+		original_enable = 1;
+	}
+
+	/* Restore the enable state */
+	gmx_cfg.s.en = original_enable;
+	cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), gmx_cfg.u64);
+	return 0;
+}

arch/mips/cavium-octeon/executive/cvmx-helper-sgmii.c

@@ -0,0 +1,558 @@
+/***********************license start***************
+ * Author: Cavium Networks
+ *
+ * Contact: support@caviumnetworks.com
+ * This file is part of the OCTEON SDK
+ *
+ * Copyright (c) 2003-2008 Cavium Networks
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, Version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This file is distributed in the hope that it will be useful, but
+ * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
+ * NONINFRINGEMENT.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this file; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * or visit http://www.gnu.org/licenses/.
+ *
+ * This file may also be available under a different license from Cavium.
+ * Contact Cavium Networks for more information
+ ***********************license end**************************************/
+
+/*
+ * Functions for SGMII initialization, configuration,
+ * and monitoring.
+ */
+
+#include <asm/octeon/octeon.h>
+
+#include <asm/octeon/cvmx-config.h>
+
+#include <asm/octeon/cvmx-mdio.h>
+#include <asm/octeon/cvmx-helper.h>
+#include <asm/octeon/cvmx-helper-board.h>
+
+#include <asm/octeon/cvmx-gmxx-defs.h>
+#include <asm/octeon/cvmx-pcsx-defs.h>
+
+void __cvmx_interrupt_gmxx_enable(int interface);
+void __cvmx_interrupt_pcsx_intx_en_reg_enable(int index, int block);
+void __cvmx_interrupt_pcsxx_int_en_reg_enable(int index);
+
+/**
+ * Perform initialization required only once for an SGMII port.
+ *
+ * @interface: Interface to init
+ * @index:     Index of prot on the interface
+ *
+ * Returns Zero on success, negative on failure
+ */
+static int __cvmx_helper_sgmii_hardware_init_one_time(int interface, int index)
+{
+	const uint64_t clock_mhz = cvmx_sysinfo_get()->cpu_clock_hz / 1000000;
+	union cvmx_pcsx_miscx_ctl_reg pcs_misc_ctl_reg;
+	union cvmx_pcsx_linkx_timer_count_reg pcsx_linkx_timer_count_reg;
+	union cvmx_gmxx_prtx_cfg gmxx_prtx_cfg;
+
+	/* Disable GMX */
+	gmxx_prtx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface));
+	gmxx_prtx_cfg.s.en = 0;
+	cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), gmxx_prtx_cfg.u64);
+
+	/*
+	 * Write PCS*_LINK*_TIMER_COUNT_REG[COUNT] with the
+	 * appropriate value. 1000BASE-X specifies a 10ms
+	 * interval. SGMII specifies a 1.6ms interval.
+	 */
+	pcs_misc_ctl_reg.u64 =
+	    cvmx_read_csr(CVMX_PCSX_MISCX_CTL_REG(index, interface));
+	pcsx_linkx_timer_count_reg.u64 =
+	    cvmx_read_csr(CVMX_PCSX_LINKX_TIMER_COUNT_REG(index, interface));
+	if (pcs_misc_ctl_reg.s.mode) {
+		/* 1000BASE-X */
+		pcsx_linkx_timer_count_reg.s.count =
+		    (10000ull * clock_mhz) >> 10;
+	} else {
+		/* SGMII */
+		pcsx_linkx_timer_count_reg.s.count =
+		    (1600ull * clock_mhz) >> 10;
+	}
+	cvmx_write_csr(CVMX_PCSX_LINKX_TIMER_COUNT_REG(index, interface),
+		       pcsx_linkx_timer_count_reg.u64);
+
+	/*
+	 * Write the advertisement register to be used as the
+	 * tx_Config_Reg<D15:D0> of the autonegotiation.  In
+	 * 1000BASE-X mode, tx_Config_Reg<D15:D0> is PCS*_AN*_ADV_REG.
+	 * In SGMII PHY mode, tx_Config_Reg<D15:D0> is
+	 * PCS*_SGM*_AN_ADV_REG.  In SGMII MAC mode,
+	 * tx_Config_Reg<D15:D0> is the fixed value 0x4001, so this
+	 * step can be skipped.
+	 */
+	if (pcs_misc_ctl_reg.s.mode) {
+		/* 1000BASE-X */
+		union cvmx_pcsx_anx_adv_reg pcsx_anx_adv_reg;
+		pcsx_anx_adv_reg.u64 =
+		    cvmx_read_csr(CVMX_PCSX_ANX_ADV_REG(index, interface));
+		pcsx_anx_adv_reg.s.rem_flt = 0;
+		pcsx_anx_adv_reg.s.pause = 3;
+		pcsx_anx_adv_reg.s.hfd = 1;
+		pcsx_anx_adv_reg.s.fd = 1;
+		cvmx_write_csr(CVMX_PCSX_ANX_ADV_REG(index, interface),
+			       pcsx_anx_adv_reg.u64);
+	} else {
+		union cvmx_pcsx_miscx_ctl_reg pcsx_miscx_ctl_reg;
+		pcsx_miscx_ctl_reg.u64 =
+		    cvmx_read_csr(CVMX_PCSX_MISCX_CTL_REG(index, interface));
+		if (pcsx_miscx_ctl_reg.s.mac_phy) {
+			/* PHY Mode */
+			union cvmx_pcsx_sgmx_an_adv_reg pcsx_sgmx_an_adv_reg;
+			pcsx_sgmx_an_adv_reg.u64 =
+			    cvmx_read_csr(CVMX_PCSX_SGMX_AN_ADV_REG
+					  (index, interface));
+			pcsx_sgmx_an_adv_reg.s.link = 1;
+			pcsx_sgmx_an_adv_reg.s.dup = 1;
+			pcsx_sgmx_an_adv_reg.s.speed = 2;
+			cvmx_write_csr(CVMX_PCSX_SGMX_AN_ADV_REG
+				       (index, interface),
+				       pcsx_sgmx_an_adv_reg.u64);
+		} else {
+			/* MAC Mode - Nothing to do */
+		}
+	}
+	return 0;
+}
+
+/**
+ * Initialize the SERTES link for the first time or after a loss
+ * of link.
+ *
+ * @interface: Interface to init
+ * @index:     Index of prot on the interface
+ *
+ * Returns Zero on success, negative on failure
+ */
+static int __cvmx_helper_sgmii_hardware_init_link(int interface, int index)
+{
+	union cvmx_pcsx_mrx_control_reg control_reg;
+
+	/*
+	 * Take PCS through a reset sequence.
+	 * PCS*_MR*_CONTROL_REG[PWR_DN] should be cleared to zero.
+	 * Write PCS*_MR*_CONTROL_REG[RESET]=1 (while not changing the
+	 * value of the other PCS*_MR*_CONTROL_REG bits).  Read
+	 * PCS*_MR*_CONTROL_REG[RESET] until it changes value to
+	 * zero.
+	 */
+	control_reg.u64 =
+	    cvmx_read_csr(CVMX_PCSX_MRX_CONTROL_REG(index, interface));
+	if (cvmx_sysinfo_get()->board_type != CVMX_BOARD_TYPE_SIM) {
+		control_reg.s.reset = 1;
+		cvmx_write_csr(CVMX_PCSX_MRX_CONTROL_REG(index, interface),
+			       control_reg.u64);
+		if (CVMX_WAIT_FOR_FIELD64
+		    (CVMX_PCSX_MRX_CONTROL_REG(index, interface),
+		     union cvmx_pcsx_mrx_control_reg, reset, ==, 0, 10000)) {
+			cvmx_dprintf("SGMII%d: Timeout waiting for port %d "
+				     "to finish reset\n",
+			     interface, index);
+			return -1;
+		}
+	}
+
+	/*
+	 * Write PCS*_MR*_CONTROL_REG[RST_AN]=1 to ensure a fresh
+	 * sgmii negotiation starts.
+	 */
+	control_reg.s.rst_an = 1;
+	control_reg.s.an_en = 1;
+	control_reg.s.pwr_dn = 0;
+	cvmx_write_csr(CVMX_PCSX_MRX_CONTROL_REG(index, interface),
+		       control_reg.u64);
+
+	/*
+	 * Wait for PCS*_MR*_STATUS_REG[AN_CPT] to be set, indicating
+	 * that sgmii autonegotiation is complete. In MAC mode this
+	 * isn't an ethernet link, but a link between Octeon and the
+	 * PHY.
+	 */
+	if ((cvmx_sysinfo_get()->board_type != CVMX_BOARD_TYPE_SIM) &&
+	    CVMX_WAIT_FOR_FIELD64(CVMX_PCSX_MRX_STATUS_REG(index, interface),
+				  union cvmx_pcsx_mrx_status_reg, an_cpt, ==, 1,
+				  10000)) {
+		/* cvmx_dprintf("SGMII%d: Port %d link timeout\n", interface, index); */
+		return -1;
+	}
+	return 0;
+}
+
+/**
+ * Configure an SGMII link to the specified speed after the SERTES
+ * link is up.
+ *
+ * @interface: Interface to init
+ * @index:     Index of prot on the interface
+ * @link_info: Link state to configure
+ *
+ * Returns Zero on success, negative on failure
+ */
+static int __cvmx_helper_sgmii_hardware_init_link_speed(int interface,
+							int index,
+							cvmx_helper_link_info_t
+							link_info)
+{
+	int is_enabled;
+	union cvmx_gmxx_prtx_cfg gmxx_prtx_cfg;
+	union cvmx_pcsx_miscx_ctl_reg pcsx_miscx_ctl_reg;
+
+	/* Disable GMX before we make any changes. Remember the enable state */
+	gmxx_prtx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface));
+	is_enabled = gmxx_prtx_cfg.s.en;
+	gmxx_prtx_cfg.s.en = 0;
+	cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), gmxx_prtx_cfg.u64);
+
+	/* Wait for GMX to be idle */
+	if (CVMX_WAIT_FOR_FIELD64
+	    (CVMX_GMXX_PRTX_CFG(index, interface), union cvmx_gmxx_prtx_cfg,
+	     rx_idle, ==, 1, 10000)
+	    || CVMX_WAIT_FOR_FIELD64(CVMX_GMXX_PRTX_CFG(index, interface),
+				     union cvmx_gmxx_prtx_cfg, tx_idle, ==, 1,
+				     10000)) {
+		cvmx_dprintf
+		    ("SGMII%d: Timeout waiting for port %d to be idle\n",
+		     interface, index);
+		return -1;
+	}
+
+	/* Read GMX CFG again to make sure the disable completed */
+	gmxx_prtx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface));
+
+	/*
+	 * Get the misc control for PCS. We will need to set the
+	 * duplication amount.
+	 */
+	pcsx_miscx_ctl_reg.u64 =
+	    cvmx_read_csr(CVMX_PCSX_MISCX_CTL_REG(index, interface));
+
+	/*
+	 * Use GMXENO to force the link down if the status we get says
+	 * it should be down.
+	 */
+	pcsx_miscx_ctl_reg.s.gmxeno = !link_info.s.link_up;
+
+	/* Only change the duplex setting if the link is up */
+	if (link_info.s.link_up)
+		gmxx_prtx_cfg.s.duplex = link_info.s.full_duplex;
+
+	/* Do speed based setting for GMX */
+	switch (link_info.s.speed) {
+	case 10:
+		gmxx_prtx_cfg.s.speed = 0;
+		gmxx_prtx_cfg.s.speed_msb = 1;
+		gmxx_prtx_cfg.s.slottime = 0;
+		/* Setting from GMX-603 */
+		pcsx_miscx_ctl_reg.s.samp_pt = 25;
+		cvmx_write_csr(CVMX_GMXX_TXX_SLOT(index, interface), 64);
+		cvmx_write_csr(CVMX_GMXX_TXX_BURST(index, interface), 0);
+		break;
+	case 100:
+		gmxx_prtx_cfg.s.speed = 0;
+		gmxx_prtx_cfg.s.speed_msb = 0;
+		gmxx_prtx_cfg.s.slottime = 0;
+		pcsx_miscx_ctl_reg.s.samp_pt = 0x5;
+		cvmx_write_csr(CVMX_GMXX_TXX_SLOT(index, interface), 64);
+		cvmx_write_csr(CVMX_GMXX_TXX_BURST(index, interface), 0);
+		break;
+	case 1000:
+		gmxx_prtx_cfg.s.speed = 1;
+		gmxx_prtx_cfg.s.speed_msb = 0;
+		gmxx_prtx_cfg.s.slottime = 1;
+		pcsx_miscx_ctl_reg.s.samp_pt = 1;
+		cvmx_write_csr(CVMX_GMXX_TXX_SLOT(index, interface), 512);
+		cvmx_write_csr(CVMX_GMXX_TXX_BURST(index, interface), 8192);
+		break;
+	default:
+		break;
+	}
+
+	/* Write the new misc control for PCS */
+	cvmx_write_csr(CVMX_PCSX_MISCX_CTL_REG(index, interface),
+		       pcsx_miscx_ctl_reg.u64);
+
+	/* Write the new GMX settings with the port still disabled */
+	cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), gmxx_prtx_cfg.u64);
+
+	/* Read GMX CFG again to make sure the config completed */
+	gmxx_prtx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface));
+
+	/* Restore the enabled / disabled state */
+	gmxx_prtx_cfg.s.en = is_enabled;
+	cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), gmxx_prtx_cfg.u64);
+
+	return 0;
+}
+
+/**
+ * Bring up the SGMII interface to be ready for packet I/O but
+ * leave I/O disabled using the GMX override. This function
+ * follows the bringup documented in 10.6.3 of the manual.
+ *
+ * @interface: Interface to bringup
+ * @num_ports: Number of ports on the interface
+ *
+ * Returns Zero on success, negative on failure
+ */
+static int __cvmx_helper_sgmii_hardware_init(int interface, int num_ports)
+{
+	int index;
+
+	__cvmx_helper_setup_gmx(interface, num_ports);
+
+	for (index = 0; index < num_ports; index++) {
+		int ipd_port = cvmx_helper_get_ipd_port(interface, index);
+		__cvmx_helper_sgmii_hardware_init_one_time(interface, index);
+		/* Linux kernel driver will call ....link_set with the
+		 * proper link state. In the simulator there is no
+		 * link state polling and hence it is set from
+		 * here.
+		 */
+		if (cvmx_sysinfo_get()->board_type == CVMX_BOARD_TYPE_SIM)
+			__cvmx_helper_sgmii_link_set(ipd_port,
+				       __cvmx_helper_sgmii_link_get(ipd_port));
+	}
+
+	return 0;
+}
+
+int __cvmx_helper_sgmii_enumerate(int interface)
+{
+	return 4;
+}
+/**
+ * Probe a SGMII interface and determine the number of ports
+ * connected to it. The SGMII interface should still be down after
+ * this call.
+ *
+ * @interface: Interface to probe
+ *
+ * Returns Number of ports on the interface. Zero to disable.
+ */
+int __cvmx_helper_sgmii_probe(int interface)
+{
+	union cvmx_gmxx_inf_mode mode;
+
+	/*
+	 * Due to errata GMX-700 on CN56XXp1.x and CN52XXp1.x, the
+	 * interface needs to be enabled before IPD otherwise per port
+	 * backpressure may not work properly
+	 */
+	mode.u64 = cvmx_read_csr(CVMX_GMXX_INF_MODE(interface));
+	mode.s.en = 1;
+	cvmx_write_csr(CVMX_GMXX_INF_MODE(interface), mode.u64);
+	return __cvmx_helper_sgmii_enumerate(interface);
+}
+
+/**
+ * Bringup and enable a SGMII interface. After this call packet
+ * I/O should be fully functional. This is called with IPD
+ * enabled but PKO disabled.
+ *
+ * @interface: Interface to bring up
+ *
+ * Returns Zero on success, negative on failure
+ */
+int __cvmx_helper_sgmii_enable(int interface)
+{
+	int num_ports = cvmx_helper_ports_on_interface(interface);
+	int index;
+
+	__cvmx_helper_sgmii_hardware_init(interface, num_ports);
+
+	for (index = 0; index < num_ports; index++) {
+		union cvmx_gmxx_prtx_cfg gmxx_prtx_cfg;
+		gmxx_prtx_cfg.u64 =
+		    cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface));
+		gmxx_prtx_cfg.s.en = 1;
+		cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface),
+			       gmxx_prtx_cfg.u64);
+		__cvmx_interrupt_pcsx_intx_en_reg_enable(index, interface);
+	}
+	__cvmx_interrupt_pcsxx_int_en_reg_enable(interface);
+	__cvmx_interrupt_gmxx_enable(interface);
+	return 0;
+}
+
+/**
+ * Return the link state of an IPD/PKO port as returned by
+ * auto negotiation. The result of this function may not match
+ * Octeon's link config if auto negotiation has changed since
+ * the last call to cvmx_helper_link_set().
+ *
+ * @ipd_port: IPD/PKO port to query
+ *
+ * Returns Link state
+ */
+cvmx_helper_link_info_t __cvmx_helper_sgmii_link_get(int ipd_port)
+{
+	cvmx_helper_link_info_t result;
+	union cvmx_pcsx_miscx_ctl_reg pcs_misc_ctl_reg;
+	int interface = cvmx_helper_get_interface_num(ipd_port);
+	int index = cvmx_helper_get_interface_index_num(ipd_port);
+	union cvmx_pcsx_mrx_control_reg pcsx_mrx_control_reg;
+
+	result.u64 = 0;
+
+	if (cvmx_sysinfo_get()->board_type == CVMX_BOARD_TYPE_SIM) {
+		/* The simulator gives you a simulated 1Gbps full duplex link */
+		result.s.link_up = 1;
+		result.s.full_duplex = 1;
+		result.s.speed = 1000;
+		return result;
+	}
+
+	pcsx_mrx_control_reg.u64 =
+	    cvmx_read_csr(CVMX_PCSX_MRX_CONTROL_REG(index, interface));
+	if (pcsx_mrx_control_reg.s.loopbck1) {
+		/* Force 1Gbps full duplex link for internal loopback */
+		result.s.link_up = 1;
+		result.s.full_duplex = 1;
+		result.s.speed = 1000;
+		return result;
+	}
+
+	pcs_misc_ctl_reg.u64 =
+	    cvmx_read_csr(CVMX_PCSX_MISCX_CTL_REG(index, interface));
+	if (pcs_misc_ctl_reg.s.mode) {
+		/* 1000BASE-X */
+		/* FIXME */
+	} else {
+		union cvmx_pcsx_miscx_ctl_reg pcsx_miscx_ctl_reg;
+		pcsx_miscx_ctl_reg.u64 =
+		    cvmx_read_csr(CVMX_PCSX_MISCX_CTL_REG(index, interface));
+		if (pcsx_miscx_ctl_reg.s.mac_phy) {
+			/* PHY Mode */
+			union cvmx_pcsx_mrx_status_reg pcsx_mrx_status_reg;
+			union cvmx_pcsx_anx_results_reg pcsx_anx_results_reg;
+
+			/*
+			 * Don't bother continuing if the SERTES low
+			 * level link is down
+			 */
+			pcsx_mrx_status_reg.u64 =
+			    cvmx_read_csr(CVMX_PCSX_MRX_STATUS_REG
+					  (index, interface));
+			if (pcsx_mrx_status_reg.s.lnk_st == 0) {
+				if (__cvmx_helper_sgmii_hardware_init_link
+				    (interface, index) != 0)
+					return result;
+			}
+
+			/* Read the autoneg results */
+			pcsx_anx_results_reg.u64 =
+			    cvmx_read_csr(CVMX_PCSX_ANX_RESULTS_REG
+					  (index, interface));
+			if (pcsx_anx_results_reg.s.an_cpt) {
+				/*
+				 * Auto negotiation is complete. Set
+				 * status accordingly.
+				 */
+				result.s.full_duplex =
+				    pcsx_anx_results_reg.s.dup;
+				result.s.link_up =
+				    pcsx_anx_results_reg.s.link_ok;
+				switch (pcsx_anx_results_reg.s.spd) {
+				case 0:
+					result.s.speed = 10;
+					break;
+				case 1:
+					result.s.speed = 100;
+					break;
+				case 2:
+					result.s.speed = 1000;
+					break;
+				default:
+					result.s.speed = 0;
+					result.s.link_up = 0;
+					break;
+				}
+			} else {
+				/*
+				 * Auto negotiation isn't
+				 * complete. Return link down.
+				 */
+				result.s.speed = 0;
+				result.s.link_up = 0;
+			}
+		} else {	/* MAC Mode */
+
+			result = __cvmx_helper_board_link_get(ipd_port);
+		}
+	}
+	return result;
+}
+
+/**
+ * Configure an IPD/PKO port for the specified link state. This
+ * function does not influence auto negotiation at the PHY level.
+ * The passed link state must always match the link state returned
+ * by cvmx_helper_link_get(). It is normally best to use
+ * cvmx_helper_link_autoconf() instead.
+ *
+ * @ipd_port:  IPD/PKO port to configure
+ * @link_info: The new link state
+ *
+ * Returns Zero on success, negative on failure
+ */
+int __cvmx_helper_sgmii_link_set(int ipd_port,
+				 cvmx_helper_link_info_t link_info)
+{
+	int interface = cvmx_helper_get_interface_num(ipd_port);
+	int index = cvmx_helper_get_interface_index_num(ipd_port);
+	__cvmx_helper_sgmii_hardware_init_link(interface, index);
+	return __cvmx_helper_sgmii_hardware_init_link_speed(interface, index,
+							    link_info);
+}
+
+/**
+ * Configure a port for internal and/or external loopback. Internal
+ * loopback causes packets sent by the port to be received by
+ * Octeon. External loopback causes packets received from the wire to
+ * sent out again.
+ *
+ * @ipd_port: IPD/PKO port to loopback.
+ * @enable_internal:
+ *		   Non zero if you want internal loopback
+ * @enable_external:
+ *		   Non zero if you want external loopback
+ *
+ * Returns Zero on success, negative on failure.
+ */
+int __cvmx_helper_sgmii_configure_loopback(int ipd_port, int enable_internal,
+					   int enable_external)
+{
+	int interface = cvmx_helper_get_interface_num(ipd_port);
+	int index = cvmx_helper_get_interface_index_num(ipd_port);
+	union cvmx_pcsx_mrx_control_reg pcsx_mrx_control_reg;
+	union cvmx_pcsx_miscx_ctl_reg pcsx_miscx_ctl_reg;
+
+	pcsx_mrx_control_reg.u64 =
+	    cvmx_read_csr(CVMX_PCSX_MRX_CONTROL_REG(index, interface));
+	pcsx_mrx_control_reg.s.loopbck1 = enable_internal;
+	cvmx_write_csr(CVMX_PCSX_MRX_CONTROL_REG(index, interface),
+		       pcsx_mrx_control_reg.u64);
+
+	pcsx_miscx_ctl_reg.u64 =
+	    cvmx_read_csr(CVMX_PCSX_MISCX_CTL_REG(index, interface));
+	pcsx_miscx_ctl_reg.s.loopbck2 = enable_external;
+	cvmx_write_csr(CVMX_PCSX_MISCX_CTL_REG(index, interface),
+		       pcsx_miscx_ctl_reg.u64);
+
+	__cvmx_helper_sgmii_hardware_init_link(interface, index);
+	return 0;
+}

arch/mips/cavium-octeon/executive/cvmx-helper-spi.c

@@ -0,0 +1,205 @@
+/***********************license start***************
+ * Author: Cavium Networks
+ *
+ * Contact: support@caviumnetworks.com
+ * This file is part of the OCTEON SDK
+ *
+ * Copyright (c) 2003-2008 Cavium Networks
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, Version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This file is distributed in the hope that it will be useful, but
+ * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
+ * NONINFRINGEMENT.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this file; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * or visit http://www.gnu.org/licenses/.
+ *
+ * This file may also be available under a different license from Cavium.
+ * Contact Cavium Networks for more information
+ ***********************license end**************************************/
+
+void __cvmx_interrupt_gmxx_enable(int interface);
+void __cvmx_interrupt_spxx_int_msk_enable(int index);
+void __cvmx_interrupt_stxx_int_msk_enable(int index);
+
+/*
+ * Functions for SPI initialization, configuration,
+ * and monitoring.
+ */
+#include <asm/octeon/octeon.h>
+
+#include <asm/octeon/cvmx-config.h>
+#include <asm/octeon/cvmx-spi.h>
+#include <asm/octeon/cvmx-helper.h>
+
+#include <asm/octeon/cvmx-pip-defs.h>
+#include <asm/octeon/cvmx-pko-defs.h>
+
+/*
+ * CVMX_HELPER_SPI_TIMEOUT is used to determine how long the SPI
+ * initialization routines wait for SPI training. You can override the
+ * value using executive-config.h if necessary.
+ */
+#ifndef CVMX_HELPER_SPI_TIMEOUT
+#define CVMX_HELPER_SPI_TIMEOUT 10
+#endif
+
+int __cvmx_helper_spi_enumerate(int interface)
+{
+	if ((cvmx_sysinfo_get()->board_type != CVMX_BOARD_TYPE_SIM) &&
+	    cvmx_spi4000_is_present(interface)) {
+		return 10;
+	} else {
+		return 16;
+	}
+}
+
+/**
+ * Probe a SPI interface and determine the number of ports
+ * connected to it. The SPI interface should still be down after
+ * this call.
+ *
+ * @interface: Interface to probe
+ *
+ * Returns Number of ports on the interface. Zero to disable.
+ */
+int __cvmx_helper_spi_probe(int interface)
+{
+	int num_ports = 0;
+
+	if ((cvmx_sysinfo_get()->board_type != CVMX_BOARD_TYPE_SIM) &&
+	    cvmx_spi4000_is_present(interface)) {
+		num_ports = 10;
+	} else {
+		union cvmx_pko_reg_crc_enable enable;
+		num_ports = 16;
+		/*
+		 * Unlike the SPI4000, most SPI devices don't
+		 * automatically put on the L2 CRC. For everything
+		 * except for the SPI4000 have PKO append the L2 CRC
+		 * to the packet.
+		 */
+		enable.u64 = cvmx_read_csr(CVMX_PKO_REG_CRC_ENABLE);
+		enable.s.enable |= 0xffff << (interface * 16);
+		cvmx_write_csr(CVMX_PKO_REG_CRC_ENABLE, enable.u64);
+	}
+	__cvmx_helper_setup_gmx(interface, num_ports);
+	return num_ports;
+}
+
+/**
+ * Bringup and enable a SPI interface. After this call packet I/O
+ * should be fully functional. This is called with IPD enabled but
+ * PKO disabled.
+ *
+ * @interface: Interface to bring up
+ *
+ * Returns Zero on success, negative on failure
+ */
+int __cvmx_helper_spi_enable(int interface)
+{
+	/*
+	 * Normally the ethernet L2 CRC is checked and stripped in the
+	 * GMX block.  When you are using SPI, this isn' the case and
+	 * IPD needs to check the L2 CRC.
+	 */
+	int num_ports = cvmx_helper_ports_on_interface(interface);
+	int ipd_port;
+	for (ipd_port = interface * 16; ipd_port < interface * 16 + num_ports;
+	     ipd_port++) {
+		union cvmx_pip_prt_cfgx port_config;
+		port_config.u64 = cvmx_read_csr(CVMX_PIP_PRT_CFGX(ipd_port));
+		port_config.s.crc_en = 1;
+		cvmx_write_csr(CVMX_PIP_PRT_CFGX(ipd_port), port_config.u64);
+	}
+
+	if (cvmx_sysinfo_get()->board_type != CVMX_BOARD_TYPE_SIM) {
+		cvmx_spi_start_interface(interface, CVMX_SPI_MODE_DUPLEX,
+					 CVMX_HELPER_SPI_TIMEOUT, num_ports);
+		if (cvmx_spi4000_is_present(interface))
+			cvmx_spi4000_initialize(interface);
+	}
+	__cvmx_interrupt_spxx_int_msk_enable(interface);
+	__cvmx_interrupt_stxx_int_msk_enable(interface);
+	__cvmx_interrupt_gmxx_enable(interface);
+	return 0;
+}
+
+/**
+ * Return the link state of an IPD/PKO port as returned by
+ * auto negotiation. The result of this function may not match
+ * Octeon's link config if auto negotiation has changed since
+ * the last call to cvmx_helper_link_set().
+ *
+ * @ipd_port: IPD/PKO port to query
+ *
+ * Returns Link state
+ */
+cvmx_helper_link_info_t __cvmx_helper_spi_link_get(int ipd_port)
+{
+	cvmx_helper_link_info_t result;
+	int interface = cvmx_helper_get_interface_num(ipd_port);
+	int index = cvmx_helper_get_interface_index_num(ipd_port);
+	result.u64 = 0;
+
+	if (cvmx_sysinfo_get()->board_type == CVMX_BOARD_TYPE_SIM) {
+		/* The simulator gives you a simulated full duplex link */
+		result.s.link_up = 1;
+		result.s.full_duplex = 1;
+		result.s.speed = 10000;
+	} else if (cvmx_spi4000_is_present(interface)) {
+		union cvmx_gmxx_rxx_rx_inbnd inband =
+		    cvmx_spi4000_check_speed(interface, index);
+		result.s.link_up = inband.s.status;
+		result.s.full_duplex = inband.s.duplex;
+		switch (inband.s.speed) {
+		case 0: /* 10 Mbps */
+			result.s.speed = 10;
+			break;
+		case 1: /* 100 Mbps */
+			result.s.speed = 100;
+			break;
+		case 2: /* 1 Gbps */
+			result.s.speed = 1000;
+			break;
+		case 3: /* Illegal */
+			result.s.speed = 0;
+			result.s.link_up = 0;
+			break;
+		}
+	} else {
+		/* For generic SPI we can't determine the link, just return some
+		   sane results */
+		result.s.link_up = 1;
+		result.s.full_duplex = 1;
+		result.s.speed = 10000;
+	}
+	return result;
+}
+
+/**
+ * Configure an IPD/PKO port for the specified link state. This
+ * function does not influence auto negotiation at the PHY level.
+ * The passed link state must always match the link state returned
+ * by cvmx_helper_link_get(). It is normally best to use
+ * cvmx_helper_link_autoconf() instead.
+ *
+ * @ipd_port:  IPD/PKO port to configure
+ * @link_info: The new link state
+ *
+ * Returns Zero on success, negative on failure
+ */
+int __cvmx_helper_spi_link_set(int ipd_port, cvmx_helper_link_info_t link_info)
+{
+	/* Nothing to do. If we have a SPI4000 then the setup was already performed
+	   by cvmx_spi4000_check_speed(). If not then there isn't any link
+	   info */
+	return 0;
+}

arch/mips/cavium-octeon/executive/cvmx-helper-util.c

@@ -0,0 +1,437 @@
+/***********************license start***************
+ * Author: Cavium Networks
+ *
+ * Contact: support@caviumnetworks.com
+ * This file is part of the OCTEON SDK
+ *
+ * Copyright (c) 2003-2008 Cavium Networks
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, Version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This file is distributed in the hope that it will be useful, but
+ * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
+ * NONINFRINGEMENT.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this file; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * or visit http://www.gnu.org/licenses/.
+ *
+ * This file may also be available under a different license from Cavium.
+ * Contact Cavium Networks for more information
+ ***********************license end**************************************/
+
+/*
+ * Small helper utilities.
+ */
+#include <linux/kernel.h>
+
+#include <asm/octeon/octeon.h>
+
+#include <asm/octeon/cvmx-config.h>
+
+#include <asm/octeon/cvmx-fpa.h>
+#include <asm/octeon/cvmx-pip.h>
+#include <asm/octeon/cvmx-pko.h>
+#include <asm/octeon/cvmx-ipd.h>
+#include <asm/octeon/cvmx-spi.h>
+
+#include <asm/octeon/cvmx-helper.h>
+#include <asm/octeon/cvmx-helper-util.h>
+
+#include <asm/octeon/cvmx-ipd-defs.h>
+
+/**
+ * Convert a interface mode into a human readable string
+ *
+ * @mode:   Mode to convert
+ *
+ * Returns String
+ */
+const char *cvmx_helper_interface_mode_to_string(cvmx_helper_interface_mode_t
+						 mode)
+{
+	switch (mode) {
+	case CVMX_HELPER_INTERFACE_MODE_DISABLED:
+		return "DISABLED";
+	case CVMX_HELPER_INTERFACE_MODE_RGMII:
+		return "RGMII";
+	case CVMX_HELPER_INTERFACE_MODE_GMII:
+		return "GMII";
+	case CVMX_HELPER_INTERFACE_MODE_SPI:
+		return "SPI";
+	case CVMX_HELPER_INTERFACE_MODE_PCIE:
+		return "PCIE";
+	case CVMX_HELPER_INTERFACE_MODE_XAUI:
+		return "XAUI";
+	case CVMX_HELPER_INTERFACE_MODE_SGMII:
+		return "SGMII";
+	case CVMX_HELPER_INTERFACE_MODE_PICMG:
+		return "PICMG";
+	case CVMX_HELPER_INTERFACE_MODE_NPI:
+		return "NPI";
+	case CVMX_HELPER_INTERFACE_MODE_LOOP:
+		return "LOOP";
+	}
+	return "UNKNOWN";
+}
+
+/**
+ * Debug routine to dump the packet structure to the console
+ *
+ * @work:   Work queue entry containing the packet to dump
+ * Returns
+ */
+int cvmx_helper_dump_packet(cvmx_wqe_t *work)
+{
+	uint64_t count;
+	uint64_t remaining_bytes;
+	union cvmx_buf_ptr buffer_ptr;
+	uint64_t start_of_buffer;
+	uint8_t *data_address;
+	uint8_t *end_of_data;
+
+	cvmx_dprintf("Packet Length:   %u\n", work->len);
+	cvmx_dprintf("	  Input Port:  %u\n", work->ipprt);
+	cvmx_dprintf("	  QoS:	       %u\n", work->qos);
+	cvmx_dprintf("	  Buffers:     %u\n", work->word2.s.bufs);
+
+	if (work->word2.s.bufs == 0) {
+		union cvmx_ipd_wqe_fpa_queue wqe_pool;
+		wqe_pool.u64 = cvmx_read_csr(CVMX_IPD_WQE_FPA_QUEUE);
+		buffer_ptr.u64 = 0;
+		buffer_ptr.s.pool = wqe_pool.s.wqe_pool;
+		buffer_ptr.s.size = 128;
+		buffer_ptr.s.addr = cvmx_ptr_to_phys(work->packet_data);
+		if (likely(!work->word2.s.not_IP)) {
+			union cvmx_pip_ip_offset pip_ip_offset;
+			pip_ip_offset.u64 = cvmx_read_csr(CVMX_PIP_IP_OFFSET);
+			buffer_ptr.s.addr +=
+			    (pip_ip_offset.s.offset << 3) -
+			    work->word2.s.ip_offset;
+			buffer_ptr.s.addr += (work->word2.s.is_v6 ^ 1) << 2;
+		} else {
+			/*
+			 * WARNING: This code assumes that the packet
+			 * is not RAW. If it was, we would use
+			 * PIP_GBL_CFG[RAW_SHF] instead of
+			 * PIP_GBL_CFG[NIP_SHF].
+			 */
+			union cvmx_pip_gbl_cfg pip_gbl_cfg;
+			pip_gbl_cfg.u64 = cvmx_read_csr(CVMX_PIP_GBL_CFG);
+			buffer_ptr.s.addr += pip_gbl_cfg.s.nip_shf;
+		}
+	} else
+		buffer_ptr = work->packet_ptr;
+	remaining_bytes = work->len;
+
+	while (remaining_bytes) {
+		start_of_buffer =
+		    ((buffer_ptr.s.addr >> 7) - buffer_ptr.s.back) << 7;
+		cvmx_dprintf("	  Buffer Start:%llx\n",
+			     (unsigned long long)start_of_buffer);
+		cvmx_dprintf("	  Buffer I   : %u\n", buffer_ptr.s.i);
+		cvmx_dprintf("	  Buffer Back: %u\n", buffer_ptr.s.back);
+		cvmx_dprintf("	  Buffer Pool: %u\n", buffer_ptr.s.pool);
+		cvmx_dprintf("	  Buffer Data: %llx\n",
+			     (unsigned long long)buffer_ptr.s.addr);
+		cvmx_dprintf("	  Buffer Size: %u\n", buffer_ptr.s.size);
+
+		cvmx_dprintf("\t\t");
+		data_address = (uint8_t *) cvmx_phys_to_ptr(buffer_ptr.s.addr);
+		end_of_data = data_address + buffer_ptr.s.size;
+		count = 0;
+		while (data_address < end_of_data) {
+			if (remaining_bytes == 0)
+				break;
+			else
+				remaining_bytes--;
+			cvmx_dprintf("%02x", (unsigned int)*data_address);
+			data_address++;
+			if (remaining_bytes && (count == 7)) {
+				cvmx_dprintf("\n\t\t");
+				count = 0;
+			} else
+				count++;
+		}
+		cvmx_dprintf("\n");
+
+		if (remaining_bytes)
+			buffer_ptr = *(union cvmx_buf_ptr *)
+				cvmx_phys_to_ptr(buffer_ptr.s.addr - 8);
+	}
+	return 0;
+}
+
+/**
+ * Setup Random Early Drop on a specific input queue
+ *
+ * @queue:  Input queue to setup RED on (0-7)
+ * @pass_thresh:
+ *		 Packets will begin slowly dropping when there are less than
+ *		 this many packet buffers free in FPA 0.
+ * @drop_thresh:
+ *		 All incoming packets will be dropped when there are less
+ *		 than this many free packet buffers in FPA 0.
+ * Returns Zero on success. Negative on failure
+ */
+int cvmx_helper_setup_red_queue(int queue, int pass_thresh, int drop_thresh)
+{
+	union cvmx_ipd_qosx_red_marks red_marks;
+	union cvmx_ipd_red_quex_param red_param;
+
+	/* Set RED to begin dropping packets when there are pass_thresh buffers
+	   left. It will linearly drop more packets until reaching drop_thresh
+	   buffers */
+	red_marks.u64 = 0;
+	red_marks.s.drop = drop_thresh;
+	red_marks.s.pass = pass_thresh;
+	cvmx_write_csr(CVMX_IPD_QOSX_RED_MARKS(queue), red_marks.u64);
+
+	/* Use the actual queue 0 counter, not the average */
+	red_param.u64 = 0;
+	red_param.s.prb_con =
+	    (255ul << 24) / (red_marks.s.pass - red_marks.s.drop);
+	red_param.s.avg_con = 1;
+	red_param.s.new_con = 255;
+	red_param.s.use_pcnt = 1;
+	cvmx_write_csr(CVMX_IPD_RED_QUEX_PARAM(queue), red_param.u64);
+	return 0;
+}
+
+/**
+ * Setup Random Early Drop to automatically begin dropping packets.
+ *
+ * @pass_thresh:
+ *		 Packets will begin slowly dropping when there are less than
+ *		 this many packet buffers free in FPA 0.
+ * @drop_thresh:
+ *		 All incoming packets will be dropped when there are less
+ *		 than this many free packet buffers in FPA 0.
+ * Returns Zero on success. Negative on failure
+ */
+int cvmx_helper_setup_red(int pass_thresh, int drop_thresh)
+{
+	union cvmx_ipd_portx_bp_page_cnt page_cnt;
+	union cvmx_ipd_bp_prt_red_end ipd_bp_prt_red_end;
+	union cvmx_ipd_red_port_enable red_port_enable;
+	int queue;
+	int interface;
+	int port;
+
+	/* Disable backpressure based on queued buffers. It needs SW support */
+	page_cnt.u64 = 0;
+	page_cnt.s.bp_enb = 0;
+	page_cnt.s.page_cnt = 100;
+	for (interface = 0; interface < 2; interface++) {
+		for (port = cvmx_helper_get_first_ipd_port(interface);
+		     port < cvmx_helper_get_last_ipd_port(interface); port++)
+			cvmx_write_csr(CVMX_IPD_PORTX_BP_PAGE_CNT(port),
+				       page_cnt.u64);
+	}
+
+	for (queue = 0; queue < 8; queue++)
+		cvmx_helper_setup_red_queue(queue, pass_thresh, drop_thresh);
+
+	/* Shutoff the dropping based on the per port page count. SW isn't
+	   decrementing it right now */
+	ipd_bp_prt_red_end.u64 = 0;
+	ipd_bp_prt_red_end.s.prt_enb = 0;
+	cvmx_write_csr(CVMX_IPD_BP_PRT_RED_END, ipd_bp_prt_red_end.u64);
+
+	red_port_enable.u64 = 0;
+	red_port_enable.s.prt_enb = 0xfffffffffull;
+	red_port_enable.s.avg_dly = 10000;
+	red_port_enable.s.prb_dly = 10000;
+	cvmx_write_csr(CVMX_IPD_RED_PORT_ENABLE, red_port_enable.u64);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(cvmx_helper_setup_red);
+
+/**
+ * Setup the common GMX settings that determine the number of
+ * ports. These setting apply to almost all configurations of all
+ * chips.
+ *
+ * @interface: Interface to configure
+ * @num_ports: Number of ports on the interface
+ *
+ * Returns Zero on success, negative on failure
+ */
+int __cvmx_helper_setup_gmx(int interface, int num_ports)
+{
+	union cvmx_gmxx_tx_prts gmx_tx_prts;
+	union cvmx_gmxx_rx_prts gmx_rx_prts;
+	union cvmx_pko_reg_gmx_port_mode pko_mode;
+	union cvmx_gmxx_txx_thresh gmx_tx_thresh;
+	int index;
+
+	/* Tell GMX the number of TX ports on this interface */
+	gmx_tx_prts.u64 = cvmx_read_csr(CVMX_GMXX_TX_PRTS(interface));
+	gmx_tx_prts.s.prts = num_ports;
+	cvmx_write_csr(CVMX_GMXX_TX_PRTS(interface), gmx_tx_prts.u64);
+
+	/* Tell GMX the number of RX ports on this interface.  This only
+	 ** applies to *GMII and XAUI ports */
+	if (cvmx_helper_interface_get_mode(interface) ==
+	    CVMX_HELPER_INTERFACE_MODE_RGMII
+	    || cvmx_helper_interface_get_mode(interface) ==
+	    CVMX_HELPER_INTERFACE_MODE_SGMII
+	    || cvmx_helper_interface_get_mode(interface) ==
+	    CVMX_HELPER_INTERFACE_MODE_GMII
+	    || cvmx_helper_interface_get_mode(interface) ==
+	    CVMX_HELPER_INTERFACE_MODE_XAUI) {
+		if (num_ports > 4) {
+			cvmx_dprintf("__cvmx_helper_setup_gmx: Illegal "
+				     "num_ports\n");
+			return -1;
+		}
+
+		gmx_rx_prts.u64 = cvmx_read_csr(CVMX_GMXX_RX_PRTS(interface));
+		gmx_rx_prts.s.prts = num_ports;
+		cvmx_write_csr(CVMX_GMXX_RX_PRTS(interface), gmx_rx_prts.u64);
+	}
+
+	/* Skip setting CVMX_PKO_REG_GMX_PORT_MODE on 30XX, 31XX, and 50XX */
+	if (!OCTEON_IS_MODEL(OCTEON_CN30XX) && !OCTEON_IS_MODEL(OCTEON_CN31XX)
+	    && !OCTEON_IS_MODEL(OCTEON_CN50XX)) {
+		/* Tell PKO the number of ports on this interface */
+		pko_mode.u64 = cvmx_read_csr(CVMX_PKO_REG_GMX_PORT_MODE);
+		if (interface == 0) {
+			if (num_ports == 1)
+				pko_mode.s.mode0 = 4;
+			else if (num_ports == 2)
+				pko_mode.s.mode0 = 3;
+			else if (num_ports <= 4)
+				pko_mode.s.mode0 = 2;
+			else if (num_ports <= 8)
+				pko_mode.s.mode0 = 1;
+			else
+				pko_mode.s.mode0 = 0;
+		} else {
+			if (num_ports == 1)
+				pko_mode.s.mode1 = 4;
+			else if (num_ports == 2)
+				pko_mode.s.mode1 = 3;
+			else if (num_ports <= 4)
+				pko_mode.s.mode1 = 2;
+			else if (num_ports <= 8)
+				pko_mode.s.mode1 = 1;
+			else
+				pko_mode.s.mode1 = 0;
+		}
+		cvmx_write_csr(CVMX_PKO_REG_GMX_PORT_MODE, pko_mode.u64);
+	}
+
+	/*
+	 * Set GMX to buffer as much data as possible before starting
+	 * transmit.  This reduces the chances that we have a TX under
+	 * run due to memory contention. Any packet that fits entirely
+	 * in the GMX FIFO can never have an under run regardless of
+	 * memory load.
+	 */
+	gmx_tx_thresh.u64 = cvmx_read_csr(CVMX_GMXX_TXX_THRESH(0, interface));
+	if (OCTEON_IS_MODEL(OCTEON_CN30XX) || OCTEON_IS_MODEL(OCTEON_CN31XX)
+	    || OCTEON_IS_MODEL(OCTEON_CN50XX)) {
+		/* These chips have a fixed max threshold of 0x40 */
+		gmx_tx_thresh.s.cnt = 0x40;
+	} else {
+		/* Choose the max value for the number of ports */
+		if (num_ports <= 1)
+			gmx_tx_thresh.s.cnt = 0x100 / 1;
+		else if (num_ports == 2)
+			gmx_tx_thresh.s.cnt = 0x100 / 2;
+		else
+			gmx_tx_thresh.s.cnt = 0x100 / 4;
+	}
+	/*
+	 * SPI and XAUI can have lots of ports but the GMX hardware
+	 * only ever has a max of 4.
+	 */
+	if (num_ports > 4)
+		num_ports = 4;
+	for (index = 0; index < num_ports; index++)
+		cvmx_write_csr(CVMX_GMXX_TXX_THRESH(index, interface),
+			       gmx_tx_thresh.u64);
+
+	return 0;
+}
+
+/**
+ * Returns the IPD/PKO port number for a port on the given
+ * interface.
+ *
+ * @interface: Interface to use
+ * @port:      Port on the interface
+ *
+ * Returns IPD/PKO port number
+ */
+int cvmx_helper_get_ipd_port(int interface, int port)
+{
+	switch (interface) {
+	case 0:
+		return port;
+	case 1:
+		return port + 16;
+	case 2:
+		return port + 32;
+	case 3:
+		return port + 36;
+	}
+	return -1;
+}
+EXPORT_SYMBOL_GPL(cvmx_helper_get_ipd_port);
+
+/**
+ * Returns the interface number for an IPD/PKO port number.
+ *
+ * @ipd_port: IPD/PKO port number
+ *
+ * Returns Interface number
+ */
+int cvmx_helper_get_interface_num(int ipd_port)
+{
+	if (ipd_port < 16)
+		return 0;
+	else if (ipd_port < 32)
+		return 1;
+	else if (ipd_port < 36)
+		return 2;
+	else if (ipd_port < 40)
+		return 3;
+	else
+		cvmx_dprintf("cvmx_helper_get_interface_num: Illegal IPD "
+			     "port number\n");
+
+	return -1;
+}
+EXPORT_SYMBOL_GPL(cvmx_helper_get_interface_num);
+
+/**
+ * Returns the interface index number for an IPD/PKO port
+ * number.
+ *
+ * @ipd_port: IPD/PKO port number
+ *
+ * Returns Interface index number
+ */
+int cvmx_helper_get_interface_index_num(int ipd_port)
+{
+	if (ipd_port < 32)
+		return ipd_port & 15;
+	else if (ipd_port < 36)
+		return ipd_port & 3;
+	else if (ipd_port < 40)
+		return ipd_port & 3;
+	else
+		cvmx_dprintf("cvmx_helper_get_interface_index_num: "
+			     "Illegal IPD port number\n");
+
+	return -1;
+}
+EXPORT_SYMBOL_GPL(cvmx_helper_get_interface_index_num);

arch/mips/cavium-octeon/executive/cvmx-helper-xaui.c

@@ -0,0 +1,354 @@
+/***********************license start***************
+ * Author: Cavium Networks
+ *
+ * Contact: support@caviumnetworks.com
+ * This file is part of the OCTEON SDK
+ *
+ * Copyright (c) 2003-2008 Cavium Networks
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, Version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This file is distributed in the hope that it will be useful, but
+ * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
+ * NONINFRINGEMENT.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this file; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * or visit http://www.gnu.org/licenses/.
+ *
+ * This file may also be available under a different license from Cavium.
+ * Contact Cavium Networks for more information
+ ***********************license end**************************************/
+
+/*
+ * Functions for XAUI initialization, configuration,
+ * and monitoring.
+ *
+ */
+
+#include <asm/octeon/octeon.h>
+
+#include <asm/octeon/cvmx-config.h>
+
+#include <asm/octeon/cvmx-helper.h>
+
+#include <asm/octeon/cvmx-pko-defs.h>
+#include <asm/octeon/cvmx-gmxx-defs.h>
+#include <asm/octeon/cvmx-pcsxx-defs.h>
+
+void __cvmx_interrupt_gmxx_enable(int interface);
+void __cvmx_interrupt_pcsx_intx_en_reg_enable(int index, int block);
+void __cvmx_interrupt_pcsxx_int_en_reg_enable(int index);
+
+int __cvmx_helper_xaui_enumerate(int interface)
+{
+	union cvmx_gmxx_hg2_control gmx_hg2_control;
+
+	/* If HiGig2 is enabled return 16 ports, otherwise return 1 port */
+	gmx_hg2_control.u64 = cvmx_read_csr(CVMX_GMXX_HG2_CONTROL(interface));
+	if (gmx_hg2_control.s.hg2tx_en)
+		return 16;
+	else
+		return 1;
+}
+
+/**
+ * Probe a XAUI interface and determine the number of ports
+ * connected to it. The XAUI interface should still be down
+ * after this call.
+ *
+ * @interface: Interface to probe
+ *
+ * Returns Number of ports on the interface. Zero to disable.
+ */
+int __cvmx_helper_xaui_probe(int interface)
+{
+	int i;
+	union cvmx_gmxx_inf_mode mode;
+
+	/*
+	 * Due to errata GMX-700 on CN56XXp1.x and CN52XXp1.x, the
+	 * interface needs to be enabled before IPD otherwise per port
+	 * backpressure may not work properly.
+	 */
+	mode.u64 = cvmx_read_csr(CVMX_GMXX_INF_MODE(interface));
+	mode.s.en = 1;
+	cvmx_write_csr(CVMX_GMXX_INF_MODE(interface), mode.u64);
+
+	__cvmx_helper_setup_gmx(interface, 1);
+
+	/*
+	 * Setup PKO to support 16 ports for HiGig2 virtual
+	 * ports. We're pointing all of the PKO packet ports for this
+	 * interface to the XAUI. This allows us to use HiGig2
+	 * backpressure per port.
+	 */
+	for (i = 0; i < 16; i++) {
+		union cvmx_pko_mem_port_ptrs pko_mem_port_ptrs;
+		pko_mem_port_ptrs.u64 = 0;
+		/*
+		 * We set each PKO port to have equal priority in a
+		 * round robin fashion.
+		 */
+		pko_mem_port_ptrs.s.static_p = 0;
+		pko_mem_port_ptrs.s.qos_mask = 0xff;
+		/* All PKO ports map to the same XAUI hardware port */
+		pko_mem_port_ptrs.s.eid = interface * 4;
+		pko_mem_port_ptrs.s.pid = interface * 16 + i;
+		cvmx_write_csr(CVMX_PKO_MEM_PORT_PTRS, pko_mem_port_ptrs.u64);
+	}
+	return __cvmx_helper_xaui_enumerate(interface);
+}
+
+/**
+ * Bringup and enable a XAUI interface. After this call packet
+ * I/O should be fully functional. This is called with IPD
+ * enabled but PKO disabled.
+ *
+ * @interface: Interface to bring up
+ *
+ * Returns Zero on success, negative on failure
+ */
+int __cvmx_helper_xaui_enable(int interface)
+{
+	union cvmx_gmxx_prtx_cfg gmx_cfg;
+	union cvmx_pcsxx_control1_reg xauiCtl;
+	union cvmx_pcsxx_misc_ctl_reg xauiMiscCtl;
+	union cvmx_gmxx_tx_xaui_ctl gmxXauiTxCtl;
+	union cvmx_gmxx_rxx_int_en gmx_rx_int_en;
+	union cvmx_gmxx_tx_int_en gmx_tx_int_en;
+	union cvmx_pcsxx_int_en_reg pcsx_int_en_reg;
+
+	/* (1) Interface has already been enabled. */
+
+	/* (2) Disable GMX. */
+	xauiMiscCtl.u64 = cvmx_read_csr(CVMX_PCSXX_MISC_CTL_REG(interface));
+	xauiMiscCtl.s.gmxeno = 1;
+	cvmx_write_csr(CVMX_PCSXX_MISC_CTL_REG(interface), xauiMiscCtl.u64);
+
+	/* (3) Disable GMX and PCSX interrupts. */
+	gmx_rx_int_en.u64 = cvmx_read_csr(CVMX_GMXX_RXX_INT_EN(0, interface));
+	cvmx_write_csr(CVMX_GMXX_RXX_INT_EN(0, interface), 0x0);
+	gmx_tx_int_en.u64 = cvmx_read_csr(CVMX_GMXX_TX_INT_EN(interface));
+	cvmx_write_csr(CVMX_GMXX_TX_INT_EN(interface), 0x0);
+	pcsx_int_en_reg.u64 = cvmx_read_csr(CVMX_PCSXX_INT_EN_REG(interface));
+	cvmx_write_csr(CVMX_PCSXX_INT_EN_REG(interface), 0x0);
+
+	/* (4) Bring up the PCSX and GMX reconciliation layer. */
+	/* (4)a Set polarity and lane swapping. */
+	/* (4)b */
+	gmxXauiTxCtl.u64 = cvmx_read_csr(CVMX_GMXX_TX_XAUI_CTL(interface));
+	/* Enable better IFG packing and improves performance */
+	gmxXauiTxCtl.s.dic_en = 1;
+	gmxXauiTxCtl.s.uni_en = 0;
+	cvmx_write_csr(CVMX_GMXX_TX_XAUI_CTL(interface), gmxXauiTxCtl.u64);
+
+	/* (4)c Aply reset sequence */
+	xauiCtl.u64 = cvmx_read_csr(CVMX_PCSXX_CONTROL1_REG(interface));
+	xauiCtl.s.lo_pwr = 0;
+	xauiCtl.s.reset = 1;
+	cvmx_write_csr(CVMX_PCSXX_CONTROL1_REG(interface), xauiCtl.u64);
+
+	/* Wait for PCS to come out of reset */
+	if (CVMX_WAIT_FOR_FIELD64
+	    (CVMX_PCSXX_CONTROL1_REG(interface), union cvmx_pcsxx_control1_reg,
+	     reset, ==, 0, 10000))
+		return -1;
+	/* Wait for PCS to be aligned */
+	if (CVMX_WAIT_FOR_FIELD64
+	    (CVMX_PCSXX_10GBX_STATUS_REG(interface),
+	     union cvmx_pcsxx_10gbx_status_reg, alignd, ==, 1, 10000))
+		return -1;
+	/* Wait for RX to be ready */
+	if (CVMX_WAIT_FOR_FIELD64
+	    (CVMX_GMXX_RX_XAUI_CTL(interface), union cvmx_gmxx_rx_xaui_ctl,
+		    status, ==, 0, 10000))
+		return -1;
+
+	/* (6) Configure GMX */
+	gmx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(0, interface));
+	gmx_cfg.s.en = 0;
+	cvmx_write_csr(CVMX_GMXX_PRTX_CFG(0, interface), gmx_cfg.u64);
+
+	/* Wait for GMX RX to be idle */
+	if (CVMX_WAIT_FOR_FIELD64
+	    (CVMX_GMXX_PRTX_CFG(0, interface), union cvmx_gmxx_prtx_cfg,
+		    rx_idle, ==, 1, 10000))
+		return -1;
+	/* Wait for GMX TX to be idle */
+	if (CVMX_WAIT_FOR_FIELD64
+	    (CVMX_GMXX_PRTX_CFG(0, interface), union cvmx_gmxx_prtx_cfg,
+		    tx_idle, ==, 1, 10000))
+		return -1;
+
+	/* GMX configure */
+	gmx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(0, interface));
+	gmx_cfg.s.speed = 1;
+	gmx_cfg.s.speed_msb = 0;
+	gmx_cfg.s.slottime = 1;
+	cvmx_write_csr(CVMX_GMXX_TX_PRTS(interface), 1);
+	cvmx_write_csr(CVMX_GMXX_TXX_SLOT(0, interface), 512);
+	cvmx_write_csr(CVMX_GMXX_TXX_BURST(0, interface), 8192);
+	cvmx_write_csr(CVMX_GMXX_PRTX_CFG(0, interface), gmx_cfg.u64);
+
+	/* (7) Clear out any error state */
+	cvmx_write_csr(CVMX_GMXX_RXX_INT_REG(0, interface),
+		       cvmx_read_csr(CVMX_GMXX_RXX_INT_REG(0, interface)));
+	cvmx_write_csr(CVMX_GMXX_TX_INT_REG(interface),
+		       cvmx_read_csr(CVMX_GMXX_TX_INT_REG(interface)));
+	cvmx_write_csr(CVMX_PCSXX_INT_REG(interface),
+		       cvmx_read_csr(CVMX_PCSXX_INT_REG(interface)));
+
+	/* Wait for receive link */
+	if (CVMX_WAIT_FOR_FIELD64
+	    (CVMX_PCSXX_STATUS1_REG(interface), union cvmx_pcsxx_status1_reg,
+	     rcv_lnk, ==, 1, 10000))
+		return -1;
+	if (CVMX_WAIT_FOR_FIELD64
+	    (CVMX_PCSXX_STATUS2_REG(interface), union cvmx_pcsxx_status2_reg,
+	     xmtflt, ==, 0, 10000))
+		return -1;
+	if (CVMX_WAIT_FOR_FIELD64
+	    (CVMX_PCSXX_STATUS2_REG(interface), union cvmx_pcsxx_status2_reg,
+	     rcvflt, ==, 0, 10000))
+		return -1;
+
+	cvmx_write_csr(CVMX_GMXX_RXX_INT_EN(0, interface), gmx_rx_int_en.u64);
+	cvmx_write_csr(CVMX_GMXX_TX_INT_EN(interface), gmx_tx_int_en.u64);
+	cvmx_write_csr(CVMX_PCSXX_INT_EN_REG(interface), pcsx_int_en_reg.u64);
+
+	cvmx_helper_link_autoconf(cvmx_helper_get_ipd_port(interface, 0));
+
+	/* (8) Enable packet reception */
+	xauiMiscCtl.s.gmxeno = 0;
+	cvmx_write_csr(CVMX_PCSXX_MISC_CTL_REG(interface), xauiMiscCtl.u64);
+
+	gmx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(0, interface));
+	gmx_cfg.s.en = 1;
+	cvmx_write_csr(CVMX_GMXX_PRTX_CFG(0, interface), gmx_cfg.u64);
+
+	__cvmx_interrupt_pcsx_intx_en_reg_enable(0, interface);
+	__cvmx_interrupt_pcsx_intx_en_reg_enable(1, interface);
+	__cvmx_interrupt_pcsx_intx_en_reg_enable(2, interface);
+	__cvmx_interrupt_pcsx_intx_en_reg_enable(3, interface);
+	__cvmx_interrupt_pcsxx_int_en_reg_enable(interface);
+	__cvmx_interrupt_gmxx_enable(interface);
+
+	return 0;
+}
+
+/**
+ * Return the link state of an IPD/PKO port as returned by
+ * auto negotiation. The result of this function may not match
+ * Octeon's link config if auto negotiation has changed since
+ * the last call to cvmx_helper_link_set().
+ *
+ * @ipd_port: IPD/PKO port to query
+ *
+ * Returns Link state
+ */
+cvmx_helper_link_info_t __cvmx_helper_xaui_link_get(int ipd_port)
+{
+	int interface = cvmx_helper_get_interface_num(ipd_port);
+	union cvmx_gmxx_tx_xaui_ctl gmxx_tx_xaui_ctl;
+	union cvmx_gmxx_rx_xaui_ctl gmxx_rx_xaui_ctl;
+	union cvmx_pcsxx_status1_reg pcsxx_status1_reg;
+	cvmx_helper_link_info_t result;
+
+	gmxx_tx_xaui_ctl.u64 = cvmx_read_csr(CVMX_GMXX_TX_XAUI_CTL(interface));
+	gmxx_rx_xaui_ctl.u64 = cvmx_read_csr(CVMX_GMXX_RX_XAUI_CTL(interface));
+	pcsxx_status1_reg.u64 =
+	    cvmx_read_csr(CVMX_PCSXX_STATUS1_REG(interface));
+	result.u64 = 0;
+
+	/* Only return a link if both RX and TX are happy */
+	if ((gmxx_tx_xaui_ctl.s.ls == 0) && (gmxx_rx_xaui_ctl.s.status == 0) &&
+	    (pcsxx_status1_reg.s.rcv_lnk == 1)) {
+		result.s.link_up = 1;
+		result.s.full_duplex = 1;
+		result.s.speed = 10000;
+	} else {
+		/* Disable GMX and PCSX interrupts. */
+		cvmx_write_csr(CVMX_GMXX_RXX_INT_EN(0, interface), 0x0);
+		cvmx_write_csr(CVMX_GMXX_TX_INT_EN(interface), 0x0);
+		cvmx_write_csr(CVMX_PCSXX_INT_EN_REG(interface), 0x0);
+	}
+	return result;
+}
+
+/**
+ * Configure an IPD/PKO port for the specified link state. This
+ * function does not influence auto negotiation at the PHY level.
+ * The passed link state must always match the link state returned
+ * by cvmx_helper_link_get(). It is normally best to use
+ * cvmx_helper_link_autoconf() instead.
+ *
+ * @ipd_port:  IPD/PKO port to configure
+ * @link_info: The new link state
+ *
+ * Returns Zero on success, negative on failure
+ */
+int __cvmx_helper_xaui_link_set(int ipd_port, cvmx_helper_link_info_t link_info)
+{
+	int interface = cvmx_helper_get_interface_num(ipd_port);
+	union cvmx_gmxx_tx_xaui_ctl gmxx_tx_xaui_ctl;
+	union cvmx_gmxx_rx_xaui_ctl gmxx_rx_xaui_ctl;
+
+	gmxx_tx_xaui_ctl.u64 = cvmx_read_csr(CVMX_GMXX_TX_XAUI_CTL(interface));
+	gmxx_rx_xaui_ctl.u64 = cvmx_read_csr(CVMX_GMXX_RX_XAUI_CTL(interface));
+
+	/* If the link shouldn't be up, then just return */
+	if (!link_info.s.link_up)
+		return 0;
+
+	/* Do nothing if both RX and TX are happy */
+	if ((gmxx_tx_xaui_ctl.s.ls == 0) && (gmxx_rx_xaui_ctl.s.status == 0))
+		return 0;
+
+	/* Bring the link up */
+	return __cvmx_helper_xaui_enable(interface);
+}
+
+/**
+ * Configure a port for internal and/or external loopback. Internal loopback
+ * causes packets sent by the port to be received by Octeon. External loopback
+ * causes packets received from the wire to sent out again.
+ *
+ * @ipd_port: IPD/PKO port to loopback.
+ * @enable_internal:
+ *		   Non zero if you want internal loopback
+ * @enable_external:
+ *		   Non zero if you want external loopback
+ *
+ * Returns Zero on success, negative on failure.
+ */
+extern int __cvmx_helper_xaui_configure_loopback(int ipd_port,
+						 int enable_internal,
+						 int enable_external)
+{
+	int interface = cvmx_helper_get_interface_num(ipd_port);
+	union cvmx_pcsxx_control1_reg pcsxx_control1_reg;
+	union cvmx_gmxx_xaui_ext_loopback gmxx_xaui_ext_loopback;
+
+	/* Set the internal loop */
+	pcsxx_control1_reg.u64 =
+	    cvmx_read_csr(CVMX_PCSXX_CONTROL1_REG(interface));
+	pcsxx_control1_reg.s.loopbck1 = enable_internal;
+	cvmx_write_csr(CVMX_PCSXX_CONTROL1_REG(interface),
+		       pcsxx_control1_reg.u64);
+
+	/* Set the external loop */
+	gmxx_xaui_ext_loopback.u64 =
+	    cvmx_read_csr(CVMX_GMXX_XAUI_EXT_LOOPBACK(interface));
+	gmxx_xaui_ext_loopback.s.en = enable_external;
+	cvmx_write_csr(CVMX_GMXX_XAUI_EXT_LOOPBACK(interface),
+		       gmxx_xaui_ext_loopback.u64);
+
+	/* Take the link through a reset */
+	return __cvmx_helper_xaui_enable(interface);
+}

arch/mips/cavium-octeon/executive/cvmx-interrupt-decodes.c

@@ -0,0 +1,371 @@
+/***********************license start***************
+ * Author: Cavium Networks
+ *
+ * Contact: support@caviumnetworks.com
+ * This file is part of the OCTEON SDK
+ *
+ * Copyright (c) 2003-2009 Cavium Networks
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, Version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This file is distributed in the hope that it will be useful, but
+ * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
+ * NONINFRINGEMENT.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this file; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * or visit http://www.gnu.org/licenses/.
+ *
+ * This file may also be available under a different license from Cavium.
+ * Contact Cavium Networks for more information
+ ***********************license end**************************************/
+
+/*
+ *
+ * Automatically generated functions useful for enabling
+ * and decoding RSL_INT_BLOCKS interrupts.
+ *
+ */
+
+#include <asm/octeon/octeon.h>
+
+#include <asm/octeon/cvmx-gmxx-defs.h>
+#include <asm/octeon/cvmx-pcsx-defs.h>
+#include <asm/octeon/cvmx-pcsxx-defs.h>
+#include <asm/octeon/cvmx-spxx-defs.h>
+#include <asm/octeon/cvmx-stxx-defs.h>
+
+#ifndef PRINT_ERROR
+#define PRINT_ERROR(format, ...)
+#endif
+
+
+/**
+ * __cvmx_interrupt_gmxx_rxx_int_en_enable enables all interrupt bits in cvmx_gmxx_rxx_int_en_t
+ */
+void __cvmx_interrupt_gmxx_rxx_int_en_enable(int index, int block)
+{
+	union cvmx_gmxx_rxx_int_en gmx_rx_int_en;
+	cvmx_write_csr(CVMX_GMXX_RXX_INT_REG(index, block),
+		       cvmx_read_csr(CVMX_GMXX_RXX_INT_REG(index, block)));
+	gmx_rx_int_en.u64 = 0;
+	if (OCTEON_IS_MODEL(OCTEON_CN56XX)) {
+		/* Skipping gmx_rx_int_en.s.reserved_29_63 */
+		gmx_rx_int_en.s.hg2cc = 1;
+		gmx_rx_int_en.s.hg2fld = 1;
+		gmx_rx_int_en.s.undat = 1;
+		gmx_rx_int_en.s.uneop = 1;
+		gmx_rx_int_en.s.unsop = 1;
+		gmx_rx_int_en.s.bad_term = 1;
+		gmx_rx_int_en.s.bad_seq = 1;
+		gmx_rx_int_en.s.rem_fault = 1;
+		gmx_rx_int_en.s.loc_fault = 1;
+		gmx_rx_int_en.s.pause_drp = 1;
+		/* Skipping gmx_rx_int_en.s.reserved_16_18 */
+		/*gmx_rx_int_en.s.ifgerr = 1; */
+		/*gmx_rx_int_en.s.coldet = 1; // Collsion detect */
+		/*gmx_rx_int_en.s.falerr = 1; // False carrier error or extend error after slottime */
+		/*gmx_rx_int_en.s.rsverr = 1; // RGMII reserved opcodes */
+		/*gmx_rx_int_en.s.pcterr = 1; // Bad Preamble / Protocol */
+		gmx_rx_int_en.s.ovrerr = 1;
+		/* Skipping gmx_rx_int_en.s.reserved_9_9 */
+		gmx_rx_int_en.s.skperr = 1;
+		gmx_rx_int_en.s.rcverr = 1;
+		/* Skipping gmx_rx_int_en.s.reserved_5_6 */
+		/*gmx_rx_int_en.s.fcserr = 1; // FCS errors are handled when we get work */
+		gmx_rx_int_en.s.jabber = 1;
+		/* Skipping gmx_rx_int_en.s.reserved_2_2 */
+		gmx_rx_int_en.s.carext = 1;
+		/* Skipping gmx_rx_int_en.s.reserved_0_0 */
+	}
+	if (OCTEON_IS_MODEL(OCTEON_CN30XX)) {
+		/* Skipping gmx_rx_int_en.s.reserved_19_63 */
+		/*gmx_rx_int_en.s.phy_dupx = 1; */
+		/*gmx_rx_int_en.s.phy_spd = 1; */
+		/*gmx_rx_int_en.s.phy_link = 1; */
+		/*gmx_rx_int_en.s.ifgerr = 1; */
+		/*gmx_rx_int_en.s.coldet = 1; // Collsion detect */
+		/*gmx_rx_int_en.s.falerr = 1; // False carrier error or extend error after slottime */
+		/*gmx_rx_int_en.s.rsverr = 1; // RGMII reserved opcodes */
+		/*gmx_rx_int_en.s.pcterr = 1; // Bad Preamble / Protocol */
+		gmx_rx_int_en.s.ovrerr = 1;
+		gmx_rx_int_en.s.niberr = 1;
+		gmx_rx_int_en.s.skperr = 1;
+		gmx_rx_int_en.s.rcverr = 1;
+		/*gmx_rx_int_en.s.lenerr = 1; // Length errors are handled when we get work */
+		gmx_rx_int_en.s.alnerr = 1;
+		/*gmx_rx_int_en.s.fcserr = 1; // FCS errors are handled when we get work */
+		gmx_rx_int_en.s.jabber = 1;
+		gmx_rx_int_en.s.maxerr = 1;
+		gmx_rx_int_en.s.carext = 1;
+		gmx_rx_int_en.s.minerr = 1;
+	}
+	if (OCTEON_IS_MODEL(OCTEON_CN50XX)) {
+		/* Skipping gmx_rx_int_en.s.reserved_20_63 */
+		gmx_rx_int_en.s.pause_drp = 1;
+		/*gmx_rx_int_en.s.phy_dupx = 1; */
+		/*gmx_rx_int_en.s.phy_spd = 1; */
+		/*gmx_rx_int_en.s.phy_link = 1; */
+		/*gmx_rx_int_en.s.ifgerr = 1; */
+		/*gmx_rx_int_en.s.coldet = 1; // Collsion detect */
+		/*gmx_rx_int_en.s.falerr = 1; // False carrier error or extend error after slottime */
+		/*gmx_rx_int_en.s.rsverr = 1; // RGMII reserved opcodes */
+		/*gmx_rx_int_en.s.pcterr = 1; // Bad Preamble / Protocol */
+		gmx_rx_int_en.s.ovrerr = 1;
+		gmx_rx_int_en.s.niberr = 1;
+		gmx_rx_int_en.s.skperr = 1;
+		gmx_rx_int_en.s.rcverr = 1;
+		/* Skipping gmx_rx_int_en.s.reserved_6_6 */
+		gmx_rx_int_en.s.alnerr = 1;
+		/*gmx_rx_int_en.s.fcserr = 1; // FCS errors are handled when we get work */
+		gmx_rx_int_en.s.jabber = 1;
+		/* Skipping gmx_rx_int_en.s.reserved_2_2 */
+		gmx_rx_int_en.s.carext = 1;
+		/* Skipping gmx_rx_int_en.s.reserved_0_0 */
+	}
+	if (OCTEON_IS_MODEL(OCTEON_CN38XX)) {
+		/* Skipping gmx_rx_int_en.s.reserved_19_63 */
+		/*gmx_rx_int_en.s.phy_dupx = 1; */
+		/*gmx_rx_int_en.s.phy_spd = 1; */
+		/*gmx_rx_int_en.s.phy_link = 1; */
+		/*gmx_rx_int_en.s.ifgerr = 1; */
+		/*gmx_rx_int_en.s.coldet = 1; // Collsion detect */
+		/*gmx_rx_int_en.s.falerr = 1; // False carrier error or extend error after slottime */
+		/*gmx_rx_int_en.s.rsverr = 1; // RGMII reserved opcodes */
+		/*gmx_rx_int_en.s.pcterr = 1; // Bad Preamble / Protocol */
+		gmx_rx_int_en.s.ovrerr = 1;
+		gmx_rx_int_en.s.niberr = 1;
+		gmx_rx_int_en.s.skperr = 1;
+		gmx_rx_int_en.s.rcverr = 1;
+		/*gmx_rx_int_en.s.lenerr = 1; // Length errors are handled when we get work */
+		gmx_rx_int_en.s.alnerr = 1;
+		/*gmx_rx_int_en.s.fcserr = 1; // FCS errors are handled when we get work */
+		gmx_rx_int_en.s.jabber = 1;
+		gmx_rx_int_en.s.maxerr = 1;
+		gmx_rx_int_en.s.carext = 1;
+		gmx_rx_int_en.s.minerr = 1;
+	}
+	if (OCTEON_IS_MODEL(OCTEON_CN31XX)) {
+		/* Skipping gmx_rx_int_en.s.reserved_19_63 */
+		/*gmx_rx_int_en.s.phy_dupx = 1; */
+		/*gmx_rx_int_en.s.phy_spd = 1; */
+		/*gmx_rx_int_en.s.phy_link = 1; */
+		/*gmx_rx_int_en.s.ifgerr = 1; */
+		/*gmx_rx_int_en.s.coldet = 1; // Collsion detect */
+		/*gmx_rx_int_en.s.falerr = 1; // False carrier error or extend error after slottime */
+		/*gmx_rx_int_en.s.rsverr = 1; // RGMII reserved opcodes */
+		/*gmx_rx_int_en.s.pcterr = 1; // Bad Preamble / Protocol */
+		gmx_rx_int_en.s.ovrerr = 1;
+		gmx_rx_int_en.s.niberr = 1;
+		gmx_rx_int_en.s.skperr = 1;
+		gmx_rx_int_en.s.rcverr = 1;
+		/*gmx_rx_int_en.s.lenerr = 1; // Length errors are handled when we get work */
+		gmx_rx_int_en.s.alnerr = 1;
+		/*gmx_rx_int_en.s.fcserr = 1; // FCS errors are handled when we get work */
+		gmx_rx_int_en.s.jabber = 1;
+		gmx_rx_int_en.s.maxerr = 1;
+		gmx_rx_int_en.s.carext = 1;
+		gmx_rx_int_en.s.minerr = 1;
+	}
+	if (OCTEON_IS_MODEL(OCTEON_CN58XX)) {
+		/* Skipping gmx_rx_int_en.s.reserved_20_63 */
+		gmx_rx_int_en.s.pause_drp = 1;
+		/*gmx_rx_int_en.s.phy_dupx = 1; */
+		/*gmx_rx_int_en.s.phy_spd = 1; */
+		/*gmx_rx_int_en.s.phy_link = 1; */
+		/*gmx_rx_int_en.s.ifgerr = 1; */
+		/*gmx_rx_int_en.s.coldet = 1; // Collsion detect */
+		/*gmx_rx_int_en.s.falerr = 1; // False carrier error or extend error after slottime */
+		/*gmx_rx_int_en.s.rsverr = 1; // RGMII reserved opcodes */
+		/*gmx_rx_int_en.s.pcterr = 1; // Bad Preamble / Protocol */
+		gmx_rx_int_en.s.ovrerr = 1;
+		gmx_rx_int_en.s.niberr = 1;
+		gmx_rx_int_en.s.skperr = 1;
+		gmx_rx_int_en.s.rcverr = 1;
+		/*gmx_rx_int_en.s.lenerr = 1; // Length errors are handled when we get work */
+		gmx_rx_int_en.s.alnerr = 1;
+		/*gmx_rx_int_en.s.fcserr = 1; // FCS errors are handled when we get work */
+		gmx_rx_int_en.s.jabber = 1;
+		gmx_rx_int_en.s.maxerr = 1;
+		gmx_rx_int_en.s.carext = 1;
+		gmx_rx_int_en.s.minerr = 1;
+	}
+	if (OCTEON_IS_MODEL(OCTEON_CN52XX)) {
+		/* Skipping gmx_rx_int_en.s.reserved_29_63 */
+		gmx_rx_int_en.s.hg2cc = 1;
+		gmx_rx_int_en.s.hg2fld = 1;
+		gmx_rx_int_en.s.undat = 1;
+		gmx_rx_int_en.s.uneop = 1;
+		gmx_rx_int_en.s.unsop = 1;
+		gmx_rx_int_en.s.bad_term = 1;
+		gmx_rx_int_en.s.bad_seq = 0;
+		gmx_rx_int_en.s.rem_fault = 1;
+		gmx_rx_int_en.s.loc_fault = 0;
+		gmx_rx_int_en.s.pause_drp = 1;
+		/* Skipping gmx_rx_int_en.s.reserved_16_18 */
+		/*gmx_rx_int_en.s.ifgerr = 1; */
+		/*gmx_rx_int_en.s.coldet = 1; // Collsion detect */
+		/*gmx_rx_int_en.s.falerr = 1; // False carrier error or extend error after slottime */
+		/*gmx_rx_int_en.s.rsverr = 1; // RGMII reserved opcodes */
+		/*gmx_rx_int_en.s.pcterr = 1; // Bad Preamble / Protocol */
+		gmx_rx_int_en.s.ovrerr = 1;
+		/* Skipping gmx_rx_int_en.s.reserved_9_9 */
+		gmx_rx_int_en.s.skperr = 1;
+		gmx_rx_int_en.s.rcverr = 1;
+		/* Skipping gmx_rx_int_en.s.reserved_5_6 */
+		/*gmx_rx_int_en.s.fcserr = 1; // FCS errors are handled when we get work */
+		gmx_rx_int_en.s.jabber = 1;
+		/* Skipping gmx_rx_int_en.s.reserved_2_2 */
+		gmx_rx_int_en.s.carext = 1;
+		/* Skipping gmx_rx_int_en.s.reserved_0_0 */
+	}
+	cvmx_write_csr(CVMX_GMXX_RXX_INT_EN(index, block), gmx_rx_int_en.u64);
+}
+/**
+ * __cvmx_interrupt_pcsx_intx_en_reg_enable enables all interrupt bits in cvmx_pcsx_intx_en_reg_t
+ */
+void __cvmx_interrupt_pcsx_intx_en_reg_enable(int index, int block)
+{
+	union cvmx_pcsx_intx_en_reg pcs_int_en_reg;
+	cvmx_write_csr(CVMX_PCSX_INTX_REG(index, block),
+		       cvmx_read_csr(CVMX_PCSX_INTX_REG(index, block)));
+	pcs_int_en_reg.u64 = 0;
+	if (OCTEON_IS_MODEL(OCTEON_CN56XX)) {
+		/* Skipping pcs_int_en_reg.s.reserved_12_63 */
+		/*pcs_int_en_reg.s.dup = 1; // This happens during normal operation */
+		pcs_int_en_reg.s.sync_bad_en = 1;
+		pcs_int_en_reg.s.an_bad_en = 1;
+		pcs_int_en_reg.s.rxlock_en = 1;
+		pcs_int_en_reg.s.rxbad_en = 1;
+		/*pcs_int_en_reg.s.rxerr_en = 1; // This happens during normal operation */
+		pcs_int_en_reg.s.txbad_en = 1;
+		pcs_int_en_reg.s.txfifo_en = 1;
+		pcs_int_en_reg.s.txfifu_en = 1;
+		pcs_int_en_reg.s.an_err_en = 1;
+		/*pcs_int_en_reg.s.xmit_en = 1; // This happens during normal operation */
+		/*pcs_int_en_reg.s.lnkspd_en = 1; // This happens during normal operation */
+	}
+	if (OCTEON_IS_MODEL(OCTEON_CN52XX)) {
+		/* Skipping pcs_int_en_reg.s.reserved_12_63 */
+		/*pcs_int_en_reg.s.dup = 1; // This happens during normal operation */
+		pcs_int_en_reg.s.sync_bad_en = 1;
+		pcs_int_en_reg.s.an_bad_en = 1;
+		pcs_int_en_reg.s.rxlock_en = 1;
+		pcs_int_en_reg.s.rxbad_en = 1;
+		/*pcs_int_en_reg.s.rxerr_en = 1; // This happens during normal operation */
+		pcs_int_en_reg.s.txbad_en = 1;
+		pcs_int_en_reg.s.txfifo_en = 1;
+		pcs_int_en_reg.s.txfifu_en = 1;
+		pcs_int_en_reg.s.an_err_en = 1;
+		/*pcs_int_en_reg.s.xmit_en = 1; // This happens during normal operation */
+		/*pcs_int_en_reg.s.lnkspd_en = 1; // This happens during normal operation */
+	}
+	cvmx_write_csr(CVMX_PCSX_INTX_EN_REG(index, block), pcs_int_en_reg.u64);
+}
+/**
+ * __cvmx_interrupt_pcsxx_int_en_reg_enable enables all interrupt bits in cvmx_pcsxx_int_en_reg_t
+ */
+void __cvmx_interrupt_pcsxx_int_en_reg_enable(int index)
+{
+	union cvmx_pcsxx_int_en_reg pcsx_int_en_reg;
+	cvmx_write_csr(CVMX_PCSXX_INT_REG(index),
+		       cvmx_read_csr(CVMX_PCSXX_INT_REG(index)));
+	pcsx_int_en_reg.u64 = 0;
+	if (OCTEON_IS_MODEL(OCTEON_CN56XX)) {
+		/* Skipping pcsx_int_en_reg.s.reserved_6_63 */
+		pcsx_int_en_reg.s.algnlos_en = 1;
+		pcsx_int_en_reg.s.synlos_en = 1;
+		pcsx_int_en_reg.s.bitlckls_en = 1;
+		pcsx_int_en_reg.s.rxsynbad_en = 1;
+		pcsx_int_en_reg.s.rxbad_en = 1;
+		pcsx_int_en_reg.s.txflt_en = 1;
+	}
+	if (OCTEON_IS_MODEL(OCTEON_CN52XX)) {
+		/* Skipping pcsx_int_en_reg.s.reserved_6_63 */
+		pcsx_int_en_reg.s.algnlos_en = 1;
+		pcsx_int_en_reg.s.synlos_en = 1;
+		pcsx_int_en_reg.s.bitlckls_en = 0;	/* Happens if XAUI module is not installed */
+		pcsx_int_en_reg.s.rxsynbad_en = 1;
+		pcsx_int_en_reg.s.rxbad_en = 1;
+		pcsx_int_en_reg.s.txflt_en = 1;
+	}
+	cvmx_write_csr(CVMX_PCSXX_INT_EN_REG(index), pcsx_int_en_reg.u64);
+}
+
+/**
+ * __cvmx_interrupt_spxx_int_msk_enable enables all interrupt bits in cvmx_spxx_int_msk_t
+ */
+void __cvmx_interrupt_spxx_int_msk_enable(int index)
+{
+	union cvmx_spxx_int_msk spx_int_msk;
+	cvmx_write_csr(CVMX_SPXX_INT_REG(index),
+		       cvmx_read_csr(CVMX_SPXX_INT_REG(index)));
+	spx_int_msk.u64 = 0;
+	if (OCTEON_IS_MODEL(OCTEON_CN38XX)) {
+		/* Skipping spx_int_msk.s.reserved_12_63 */
+		spx_int_msk.s.calerr = 1;
+		spx_int_msk.s.syncerr = 1;
+		spx_int_msk.s.diperr = 1;
+		spx_int_msk.s.tpaovr = 1;
+		spx_int_msk.s.rsverr = 1;
+		spx_int_msk.s.drwnng = 1;
+		spx_int_msk.s.clserr = 1;
+		spx_int_msk.s.spiovr = 1;
+		/* Skipping spx_int_msk.s.reserved_2_3 */
+		spx_int_msk.s.abnorm = 1;
+		spx_int_msk.s.prtnxa = 1;
+	}
+	if (OCTEON_IS_MODEL(OCTEON_CN58XX)) {
+		/* Skipping spx_int_msk.s.reserved_12_63 */
+		spx_int_msk.s.calerr = 1;
+		spx_int_msk.s.syncerr = 1;
+		spx_int_msk.s.diperr = 1;
+		spx_int_msk.s.tpaovr = 1;
+		spx_int_msk.s.rsverr = 1;
+		spx_int_msk.s.drwnng = 1;
+		spx_int_msk.s.clserr = 1;
+		spx_int_msk.s.spiovr = 1;
+		/* Skipping spx_int_msk.s.reserved_2_3 */
+		spx_int_msk.s.abnorm = 1;
+		spx_int_msk.s.prtnxa = 1;
+	}
+	cvmx_write_csr(CVMX_SPXX_INT_MSK(index), spx_int_msk.u64);
+}
+/**
+ * __cvmx_interrupt_stxx_int_msk_enable enables all interrupt bits in cvmx_stxx_int_msk_t
+ */
+void __cvmx_interrupt_stxx_int_msk_enable(int index)
+{
+	union cvmx_stxx_int_msk stx_int_msk;
+	cvmx_write_csr(CVMX_STXX_INT_REG(index),
+		       cvmx_read_csr(CVMX_STXX_INT_REG(index)));
+	stx_int_msk.u64 = 0;
+	if (OCTEON_IS_MODEL(OCTEON_CN38XX)) {
+		/* Skipping stx_int_msk.s.reserved_8_63 */
+		stx_int_msk.s.frmerr = 1;
+		stx_int_msk.s.unxfrm = 1;
+		stx_int_msk.s.nosync = 1;
+		stx_int_msk.s.diperr = 1;
+		stx_int_msk.s.datovr = 1;
+		stx_int_msk.s.ovrbst = 1;
+		stx_int_msk.s.calpar1 = 1;
+		stx_int_msk.s.calpar0 = 1;
+	}
+	if (OCTEON_IS_MODEL(OCTEON_CN58XX)) {
+		/* Skipping stx_int_msk.s.reserved_8_63 */
+		stx_int_msk.s.frmerr = 1;
+		stx_int_msk.s.unxfrm = 1;
+		stx_int_msk.s.nosync = 1;
+		stx_int_msk.s.diperr = 1;
+		stx_int_msk.s.datovr = 1;
+		stx_int_msk.s.ovrbst = 1;
+		stx_int_msk.s.calpar1 = 1;
+		stx_int_msk.s.calpar0 = 1;
+	}
+	cvmx_write_csr(CVMX_STXX_INT_MSK(index), stx_int_msk.u64);
+}

arch/mips/cavium-octeon/executive/cvmx-interrupt-rsl.c

@@ -0,0 +1,140 @@
+/***********************license start***************
+ * Author: Cavium Networks
+ *
+ * Contact: support@caviumnetworks.com
+ * This file is part of the OCTEON SDK
+ *
+ * Copyright (c) 2003-2008 Cavium Networks
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, Version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This file is distributed in the hope that it will be useful, but
+ * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
+ * NONINFRINGEMENT.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this file; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * or visit http://www.gnu.org/licenses/.
+ *
+ * This file may also be available under a different license from Cavium.
+ * Contact Cavium Networks for more information
+ ***********************license end**************************************/
+
+/*
+ * Utility functions to decode Octeon's RSL_INT_BLOCKS
+ * interrupts into error messages.
+ */
+
+#include <asm/octeon/octeon.h>
+
+#include <asm/octeon/cvmx-asxx-defs.h>
+#include <asm/octeon/cvmx-gmxx-defs.h>
+
+#ifndef PRINT_ERROR
+#define PRINT_ERROR(format, ...)
+#endif
+
+void __cvmx_interrupt_gmxx_rxx_int_en_enable(int index, int block);
+
+/**
+ * Enable ASX error interrupts that exist on CN3XXX, CN50XX, and
+ * CN58XX.
+ *
+ * @block:  Interface to enable 0-1
+ */
+void __cvmx_interrupt_asxx_enable(int block)
+{
+	int mask;
+	union cvmx_asxx_int_en csr;
+	/*
+	 * CN38XX and CN58XX have two interfaces with 4 ports per
+	 * interface. All other chips have a max of 3 ports on
+	 * interface 0
+	 */
+	if (OCTEON_IS_MODEL(OCTEON_CN38XX) || OCTEON_IS_MODEL(OCTEON_CN58XX))
+		mask = 0xf;	/* Set enables for 4 ports */
+	else
+		mask = 0x7;	/* Set enables for 3 ports */
+
+	/* Enable interface interrupts */
+	csr.u64 = cvmx_read_csr(CVMX_ASXX_INT_EN(block));
+	csr.s.txpsh = mask;
+	csr.s.txpop = mask;
+	csr.s.ovrflw = mask;
+	cvmx_write_csr(CVMX_ASXX_INT_EN(block), csr.u64);
+}
+/**
+ * Enable GMX error reporting for the supplied interface
+ *
+ * @interface: Interface to enable
+ */
+void __cvmx_interrupt_gmxx_enable(int interface)
+{
+	union cvmx_gmxx_inf_mode mode;
+	union cvmx_gmxx_tx_int_en gmx_tx_int_en;
+	int num_ports;
+	int index;
+
+	mode.u64 = cvmx_read_csr(CVMX_GMXX_INF_MODE(interface));
+
+	if (OCTEON_IS_MODEL(OCTEON_CN56XX) || OCTEON_IS_MODEL(OCTEON_CN52XX)) {
+		if (mode.s.en) {
+			switch (mode.cn56xx.mode) {
+			case 1: /* XAUI */
+				num_ports = 1;
+				break;
+			case 2: /* SGMII */
+			case 3: /* PICMG */
+				num_ports = 4;
+				break;
+			default:	/* Disabled */
+				num_ports = 0;
+				break;
+			}
+		} else
+			num_ports = 0;
+	} else {
+		if (mode.s.en) {
+			if (OCTEON_IS_MODEL(OCTEON_CN38XX)
+			    || OCTEON_IS_MODEL(OCTEON_CN58XX)) {
+				/*
+				 * SPI on CN38XX and CN58XX report all
+				 * errors through port 0.  RGMII needs
+				 * to check all 4 ports
+				 */
+				if (mode.s.type)
+					num_ports = 1;
+				else
+					num_ports = 4;
+			} else {
+				/*
+				 * CN30XX, CN31XX, and CN50XX have two
+				 * or three ports. GMII and MII has 2,
+				 * RGMII has three
+				 */
+				if (mode.s.type)
+					num_ports = 2;
+				else
+					num_ports = 3;
+			}
+		} else
+			num_ports = 0;
+	}
+
+	gmx_tx_int_en.u64 = 0;
+	if (num_ports) {
+		if (OCTEON_IS_MODEL(OCTEON_CN38XX)
+		    || OCTEON_IS_MODEL(OCTEON_CN58XX))
+			gmx_tx_int_en.cn38xx.ncb_nxa = 1;
+		gmx_tx_int_en.s.pko_nxa = 1;
+	}
+	gmx_tx_int_en.s.undflw = (1 << num_ports) - 1;
+	cvmx_write_csr(CVMX_GMXX_TX_INT_EN(interface), gmx_tx_int_en.u64);
+	for (index = 0; index < num_ports; index++)
+		__cvmx_interrupt_gmxx_rxx_int_en_enable(index, interface);
+}

arch/mips/cavium-octeon/executive/cvmx-l2c.c

@@ -0,0 +1,902 @@
+/***********************license start***************
+ * Author: Cavium Networks
+ *
+ * Contact: support@caviumnetworks.com
+ * This file is part of the OCTEON SDK
+ *
+ * Copyright (c) 2003-2010 Cavium Networks
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, Version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This file is distributed in the hope that it will be useful, but
+ * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
+ * NONINFRINGEMENT.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this file; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * or visit http://www.gnu.org/licenses/.
+ *
+ * This file may also be available under a different license from Cavium.
+ * Contact Cavium Networks for more information
+ ***********************license end**************************************/
+
+/*
+ * Implementation of the Level 2 Cache (L2C) control,
+ * measurement, and debugging facilities.
+ */
+
+#include <linux/compiler.h>
+#include <linux/irqflags.h>
+#include <asm/octeon/cvmx.h>
+#include <asm/octeon/cvmx-l2c.h>
+#include <asm/octeon/cvmx-spinlock.h>
+
+/*
+ * This spinlock is used internally to ensure that only one core is
+ * performing certain L2 operations at a time.
+ *
+ * NOTE: This only protects calls from within a single application -
+ * if multiple applications or operating systems are running, then it
+ * is up to the user program to coordinate between them.
+ */
+cvmx_spinlock_t cvmx_l2c_spinlock;
+
+int cvmx_l2c_get_core_way_partition(uint32_t core)
+{
+	uint32_t field;
+
+	/* Validate the core number */
+	if (core >= cvmx_octeon_num_cores())
+		return -1;
+
+	if (OCTEON_IS_MODEL(OCTEON_CN63XX))
+		return cvmx_read_csr(CVMX_L2C_WPAR_PPX(core)) & 0xffff;
+
+	/*
+	 * Use the lower two bits of the coreNumber to determine the
+	 * bit offset of the UMSK[] field in the L2C_SPAR register.
+	 */
+	field = (core & 0x3) * 8;
+
+	/*
+	 * Return the UMSK[] field from the appropriate L2C_SPAR
+	 * register based on the coreNumber.
+	 */
+
+	switch (core & 0xC) {
+	case 0x0:
+		return (cvmx_read_csr(CVMX_L2C_SPAR0) & (0xFF << field)) >> field;
+	case 0x4:
+		return (cvmx_read_csr(CVMX_L2C_SPAR1) & (0xFF << field)) >> field;
+	case 0x8:
+		return (cvmx_read_csr(CVMX_L2C_SPAR2) & (0xFF << field)) >> field;
+	case 0xC:
+		return (cvmx_read_csr(CVMX_L2C_SPAR3) & (0xFF << field)) >> field;
+	}
+	return 0;
+}
+
+int cvmx_l2c_set_core_way_partition(uint32_t core, uint32_t mask)
+{
+	uint32_t field;
+	uint32_t valid_mask;
+
+	valid_mask = (0x1 << cvmx_l2c_get_num_assoc()) - 1;
+
+	mask &= valid_mask;
+
+	/* A UMSK setting which blocks all L2C Ways is an error on some chips */
+	if (mask == valid_mask && !OCTEON_IS_MODEL(OCTEON_CN63XX))
+		return -1;
+
+	/* Validate the core number */
+	if (core >= cvmx_octeon_num_cores())
+		return -1;
+
+	if (OCTEON_IS_MODEL(OCTEON_CN63XX)) {
+		cvmx_write_csr(CVMX_L2C_WPAR_PPX(core), mask);
+		return 0;
+	}
+
+	/*
+	 * Use the lower two bits of core to determine the bit offset of the
+	 * UMSK[] field in the L2C_SPAR register.
+	 */
+	field = (core & 0x3) * 8;
+
+	/*
+	 * Assign the new mask setting to the UMSK[] field in the appropriate
+	 * L2C_SPAR register based on the core_num.
+	 *
+	 */
+	switch (core & 0xC) {
+	case 0x0:
+		cvmx_write_csr(CVMX_L2C_SPAR0,
+			       (cvmx_read_csr(CVMX_L2C_SPAR0) & ~(0xFF << field)) |
+			       mask << field);
+		break;
+	case 0x4:
+		cvmx_write_csr(CVMX_L2C_SPAR1,
+			       (cvmx_read_csr(CVMX_L2C_SPAR1) & ~(0xFF << field)) |
+			       mask << field);
+		break;
+	case 0x8:
+		cvmx_write_csr(CVMX_L2C_SPAR2,
+			       (cvmx_read_csr(CVMX_L2C_SPAR2) & ~(0xFF << field)) |
+			       mask << field);
+		break;
+	case 0xC:
+		cvmx_write_csr(CVMX_L2C_SPAR3,
+			       (cvmx_read_csr(CVMX_L2C_SPAR3) & ~(0xFF << field)) |
+			       mask << field);
+		break;
+	}
+	return 0;
+}
+
+int cvmx_l2c_set_hw_way_partition(uint32_t mask)
+{
+	uint32_t valid_mask;
+
+	valid_mask = (0x1 << cvmx_l2c_get_num_assoc()) - 1;
+	mask &= valid_mask;
+
+	/* A UMSK setting which blocks all L2C Ways is an error on some chips */
+	if (mask == valid_mask	&& !OCTEON_IS_MODEL(OCTEON_CN63XX))
+		return -1;
+
+	if (OCTEON_IS_MODEL(OCTEON_CN63XX))
+		cvmx_write_csr(CVMX_L2C_WPAR_IOBX(0), mask);
+	else
+		cvmx_write_csr(CVMX_L2C_SPAR4,
+			       (cvmx_read_csr(CVMX_L2C_SPAR4) & ~0xFF) | mask);
+	return 0;
+}
+
+int cvmx_l2c_get_hw_way_partition(void)
+{
+	if (OCTEON_IS_MODEL(OCTEON_CN63XX))
+		return cvmx_read_csr(CVMX_L2C_WPAR_IOBX(0)) & 0xffff;
+	else
+		return cvmx_read_csr(CVMX_L2C_SPAR4) & (0xFF);
+}
+
+void cvmx_l2c_config_perf(uint32_t counter, enum cvmx_l2c_event event,
+			  uint32_t clear_on_read)
+{
+	if (OCTEON_IS_MODEL(OCTEON_CN5XXX) || OCTEON_IS_MODEL(OCTEON_CN3XXX)) {
+		union cvmx_l2c_pfctl pfctl;
+
+		pfctl.u64 = cvmx_read_csr(CVMX_L2C_PFCTL);
+
+		switch (counter) {
+		case 0:
+			pfctl.s.cnt0sel = event;
+			pfctl.s.cnt0ena = 1;
+			pfctl.s.cnt0rdclr = clear_on_read;
+			break;
+		case 1:
+			pfctl.s.cnt1sel = event;
+			pfctl.s.cnt1ena = 1;
+			pfctl.s.cnt1rdclr = clear_on_read;
+			break;
+		case 2:
+			pfctl.s.cnt2sel = event;
+			pfctl.s.cnt2ena = 1;
+			pfctl.s.cnt2rdclr = clear_on_read;
+			break;
+		case 3:
+		default:
+			pfctl.s.cnt3sel = event;
+			pfctl.s.cnt3ena = 1;
+			pfctl.s.cnt3rdclr = clear_on_read;
+			break;
+		}
+
+		cvmx_write_csr(CVMX_L2C_PFCTL, pfctl.u64);
+	} else {
+		union cvmx_l2c_tadx_prf l2c_tadx_prf;
+		int tad;
+
+		cvmx_dprintf("L2C performance counter events are different for this chip, mapping 'event' to cvmx_l2c_tad_event_t\n");
+		if (clear_on_read)
+			cvmx_dprintf("L2C counters don't support clear on read for this chip\n");
+
+		l2c_tadx_prf.u64 = cvmx_read_csr(CVMX_L2C_TADX_PRF(0));
+
+		switch (counter) {
+		case 0:
+			l2c_tadx_prf.s.cnt0sel = event;
+			break;
+		case 1:
+			l2c_tadx_prf.s.cnt1sel = event;
+			break;
+		case 2:
+			l2c_tadx_prf.s.cnt2sel = event;
+			break;
+		default:
+		case 3:
+			l2c_tadx_prf.s.cnt3sel = event;
+			break;
+		}
+		for (tad = 0; tad < CVMX_L2C_TADS; tad++)
+			cvmx_write_csr(CVMX_L2C_TADX_PRF(tad),
+				       l2c_tadx_prf.u64);
+	}
+}
+
+uint64_t cvmx_l2c_read_perf(uint32_t counter)
+{
+	switch (counter) {
+	case 0:
+		if (OCTEON_IS_MODEL(OCTEON_CN5XXX) || OCTEON_IS_MODEL(OCTEON_CN3XXX))
+			return cvmx_read_csr(CVMX_L2C_PFC0);
+		else {
+			uint64_t counter = 0;
+			int tad;
+			for (tad = 0; tad < CVMX_L2C_TADS; tad++)
+				counter += cvmx_read_csr(CVMX_L2C_TADX_PFC0(tad));
+			return counter;
+		}
+	case 1:
+		if (OCTEON_IS_MODEL(OCTEON_CN5XXX) || OCTEON_IS_MODEL(OCTEON_CN3XXX))
+			return cvmx_read_csr(CVMX_L2C_PFC1);
+		else {
+			uint64_t counter = 0;
+			int tad;
+			for (tad = 0; tad < CVMX_L2C_TADS; tad++)
+				counter += cvmx_read_csr(CVMX_L2C_TADX_PFC1(tad));
+			return counter;
+		}
+	case 2:
+		if (OCTEON_IS_MODEL(OCTEON_CN5XXX) || OCTEON_IS_MODEL(OCTEON_CN3XXX))
+			return cvmx_read_csr(CVMX_L2C_PFC2);
+		else {
+			uint64_t counter = 0;
+			int tad;
+			for (tad = 0; tad < CVMX_L2C_TADS; tad++)
+				counter += cvmx_read_csr(CVMX_L2C_TADX_PFC2(tad));
+			return counter;
+		}
+	case 3:
+	default:
+		if (OCTEON_IS_MODEL(OCTEON_CN5XXX) || OCTEON_IS_MODEL(OCTEON_CN3XXX))
+			return cvmx_read_csr(CVMX_L2C_PFC3);
+		else {
+			uint64_t counter = 0;
+			int tad;
+			for (tad = 0; tad < CVMX_L2C_TADS; tad++)
+				counter += cvmx_read_csr(CVMX_L2C_TADX_PFC3(tad));
+			return counter;
+		}
+	}
+}
+
+/**
+ * @INTERNAL
+ * Helper function use to fault in cache lines for L2 cache locking
+ *
+ * @addr:   Address of base of memory region to read into L2 cache
+ * @len:    Length (in bytes) of region to fault in
+ */
+static void fault_in(uint64_t addr, int len)
+{
+	char *ptr;
+
+	/*
+	 * Adjust addr and length so we get all cache lines even for
+	 * small ranges spanning two cache lines.
+	 */
+	len += addr & CVMX_CACHE_LINE_MASK;
+	addr &= ~CVMX_CACHE_LINE_MASK;
+	ptr = cvmx_phys_to_ptr(addr);
+	/*
+	 * Invalidate L1 cache to make sure all loads result in data
+	 * being in L2.
+	 */
+	CVMX_DCACHE_INVALIDATE;
+	while (len > 0) {
+		ACCESS_ONCE(*ptr);
+		len -= CVMX_CACHE_LINE_SIZE;
+		ptr += CVMX_CACHE_LINE_SIZE;
+	}
+}
+
+int cvmx_l2c_lock_line(uint64_t addr)
+{
+	if (OCTEON_IS_MODEL(OCTEON_CN63XX)) {
+		int shift = CVMX_L2C_TAG_ADDR_ALIAS_SHIFT;
+		uint64_t assoc = cvmx_l2c_get_num_assoc();
+		uint64_t tag = addr >> shift;
+		uint64_t index = CVMX_ADD_SEG(CVMX_MIPS_SPACE_XKPHYS, cvmx_l2c_address_to_index(addr) << CVMX_L2C_IDX_ADDR_SHIFT);
+		uint64_t way;
+		union cvmx_l2c_tadx_tag l2c_tadx_tag;
+
+		CVMX_CACHE_LCKL2(CVMX_ADD_SEG(CVMX_MIPS_SPACE_XKPHYS, addr), 0);
+
+		/* Make sure we were able to lock the line */
+		for (way = 0; way < assoc; way++) {
+			CVMX_CACHE_LTGL2I(index | (way << shift), 0);
+			/* make sure CVMX_L2C_TADX_TAG is updated */
+			CVMX_SYNC;
+			l2c_tadx_tag.u64 = cvmx_read_csr(CVMX_L2C_TADX_TAG(0));
+			if (l2c_tadx_tag.s.valid && l2c_tadx_tag.s.tag == tag)
+				break;
+		}
+
+		/* Check if a valid line is found */
+		if (way >= assoc) {
+			/* cvmx_dprintf("ERROR: cvmx_l2c_lock_line: line not found for locking at 0x%llx address\n", (unsigned long long)addr); */
+			return -1;
+		}
+
+		/* Check if lock bit is not set */
+		if (!l2c_tadx_tag.s.lock) {
+			/* cvmx_dprintf("ERROR: cvmx_l2c_lock_line: Not able to lock at 0x%llx address\n", (unsigned long long)addr); */
+			return -1;
+		}
+		return way;
+	} else {
+		int retval = 0;
+		union cvmx_l2c_dbg l2cdbg;
+		union cvmx_l2c_lckbase lckbase;
+		union cvmx_l2c_lckoff lckoff;
+		union cvmx_l2t_err l2t_err;
+
+		cvmx_spinlock_lock(&cvmx_l2c_spinlock);
+
+		l2cdbg.u64 = 0;
+		lckbase.u64 = 0;
+		lckoff.u64 = 0;
+
+		/* Clear l2t error bits if set */
+		l2t_err.u64 = cvmx_read_csr(CVMX_L2T_ERR);
+		l2t_err.s.lckerr = 1;
+		l2t_err.s.lckerr2 = 1;
+		cvmx_write_csr(CVMX_L2T_ERR, l2t_err.u64);
+
+		addr &= ~CVMX_CACHE_LINE_MASK;
+
+		/* Set this core as debug core */
+		l2cdbg.s.ppnum = cvmx_get_core_num();
+		CVMX_SYNC;
+		cvmx_write_csr(CVMX_L2C_DBG, l2cdbg.u64);
+		cvmx_read_csr(CVMX_L2C_DBG);
+
+		lckoff.s.lck_offset = 0; /* Only lock 1 line at a time */
+		cvmx_write_csr(CVMX_L2C_LCKOFF, lckoff.u64);
+		cvmx_read_csr(CVMX_L2C_LCKOFF);
+
+		if (((union cvmx_l2c_cfg)(cvmx_read_csr(CVMX_L2C_CFG))).s.idxalias) {
+			int alias_shift = CVMX_L2C_IDX_ADDR_SHIFT + 2 * CVMX_L2_SET_BITS - 1;
+			uint64_t addr_tmp = addr ^ (addr & ((1 << alias_shift) - 1)) >> CVMX_L2_SET_BITS;
+			lckbase.s.lck_base = addr_tmp >> 7;
+		} else {
+			lckbase.s.lck_base = addr >> 7;
+		}
+
+		lckbase.s.lck_ena = 1;
+		cvmx_write_csr(CVMX_L2C_LCKBASE, lckbase.u64);
+		/* Make sure it gets there */
+		cvmx_read_csr(CVMX_L2C_LCKBASE);
+
+		fault_in(addr, CVMX_CACHE_LINE_SIZE);
+
+		lckbase.s.lck_ena = 0;
+		cvmx_write_csr(CVMX_L2C_LCKBASE, lckbase.u64);
+		/* Make sure it gets there */
+		cvmx_read_csr(CVMX_L2C_LCKBASE);
+
+		/* Stop being debug core */
+		cvmx_write_csr(CVMX_L2C_DBG, 0);
+		cvmx_read_csr(CVMX_L2C_DBG);
+
+		l2t_err.u64 = cvmx_read_csr(CVMX_L2T_ERR);
+		if (l2t_err.s.lckerr || l2t_err.s.lckerr2)
+			retval = 1;  /* We were unable to lock the line */
+
+		cvmx_spinlock_unlock(&cvmx_l2c_spinlock);
+		return retval;
+	}
+}
+
+int cvmx_l2c_lock_mem_region(uint64_t start, uint64_t len)
+{
+	int retval = 0;
+
+	/* Round start/end to cache line boundaries */
+	len += start & CVMX_CACHE_LINE_MASK;
+	start &= ~CVMX_CACHE_LINE_MASK;
+	len = (len + CVMX_CACHE_LINE_MASK) & ~CVMX_CACHE_LINE_MASK;
+
+	while (len) {
+		retval += cvmx_l2c_lock_line(start);
+		start += CVMX_CACHE_LINE_SIZE;
+		len -= CVMX_CACHE_LINE_SIZE;
+	}
+	return retval;
+}
+
+void cvmx_l2c_flush(void)
+{
+	uint64_t assoc, set;
+	uint64_t n_assoc, n_set;
+
+	n_set = cvmx_l2c_get_num_sets();
+	n_assoc = cvmx_l2c_get_num_assoc();
+
+	if (OCTEON_IS_MODEL(OCTEON_CN6XXX)) {
+		uint64_t address;
+		/* These may look like constants, but they aren't... */
+		int assoc_shift = CVMX_L2C_TAG_ADDR_ALIAS_SHIFT;
+		int set_shift = CVMX_L2C_IDX_ADDR_SHIFT;
+		for (set = 0; set < n_set; set++) {
+			for (assoc = 0; assoc < n_assoc; assoc++) {
+				address = CVMX_ADD_SEG(CVMX_MIPS_SPACE_XKPHYS,
+						       (assoc << assoc_shift) | (set << set_shift));
+				CVMX_CACHE_WBIL2I(address, 0);
+			}
+		}
+	} else {
+		for (set = 0; set < n_set; set++)
+			for (assoc = 0; assoc < n_assoc; assoc++)
+				cvmx_l2c_flush_line(assoc, set);
+	}
+}
+
+
+int cvmx_l2c_unlock_line(uint64_t address)
+{
+
+	if (OCTEON_IS_MODEL(OCTEON_CN63XX)) {
+		int assoc;
+		union cvmx_l2c_tag tag;
+		uint32_t tag_addr;
+		uint32_t index = cvmx_l2c_address_to_index(address);
+
+		tag_addr = ((address >> CVMX_L2C_TAG_ADDR_ALIAS_SHIFT) & ((1 << CVMX_L2C_TAG_ADDR_ALIAS_SHIFT) - 1));
+
+		/*
+		 * For 63XX, we can flush a line by using the physical
+		 * address directly, so finding the cache line used by
+		 * the address is only required to provide the proper
+		 * return value for the function.
+		 */
+		for (assoc = 0; assoc < CVMX_L2_ASSOC; assoc++) {
+			tag = cvmx_l2c_get_tag(assoc, index);
+
+			if (tag.s.V && (tag.s.addr == tag_addr)) {
+				CVMX_CACHE_WBIL2(CVMX_ADD_SEG(CVMX_MIPS_SPACE_XKPHYS, address), 0);
+				return tag.s.L;
+			}
+		}
+	} else {
+		int assoc;
+		union cvmx_l2c_tag tag;
+		uint32_t tag_addr;
+
+		uint32_t index = cvmx_l2c_address_to_index(address);
+
+		/* Compute portion of address that is stored in tag */
+		tag_addr = ((address >> CVMX_L2C_TAG_ADDR_ALIAS_SHIFT) & ((1 << CVMX_L2C_TAG_ADDR_ALIAS_SHIFT) - 1));
+		for (assoc = 0; assoc < CVMX_L2_ASSOC; assoc++) {
+			tag = cvmx_l2c_get_tag(assoc, index);
+
+			if (tag.s.V && (tag.s.addr == tag_addr)) {
+				cvmx_l2c_flush_line(assoc, index);
+				return tag.s.L;
+			}
+		}
+	}
+	return 0;
+}
+
+int cvmx_l2c_unlock_mem_region(uint64_t start, uint64_t len)
+{
+	int num_unlocked = 0;
+	/* Round start/end to cache line boundaries */
+	len += start & CVMX_CACHE_LINE_MASK;
+	start &= ~CVMX_CACHE_LINE_MASK;
+	len = (len + CVMX_CACHE_LINE_MASK) & ~CVMX_CACHE_LINE_MASK;
+	while (len > 0) {
+		num_unlocked += cvmx_l2c_unlock_line(start);
+		start += CVMX_CACHE_LINE_SIZE;
+		len -= CVMX_CACHE_LINE_SIZE;
+	}
+
+	return num_unlocked;
+}
+
+/*
+ * Internal l2c tag types.  These are converted to a generic structure
+ * that can be used on all chips.
+ */
+union __cvmx_l2c_tag {
+	uint64_t u64;
+	struct cvmx_l2c_tag_cn50xx {
+		uint64_t reserved:40;
+		uint64_t V:1;		/* Line valid */
+		uint64_t D:1;		/* Line dirty */
+		uint64_t L:1;		/* Line locked */
+		uint64_t U:1;		/* Use, LRU eviction */
+		uint64_t addr:20;	/* Phys mem addr (33..14) */
+	} cn50xx;
+	struct cvmx_l2c_tag_cn30xx {
+		uint64_t reserved:41;
+		uint64_t V:1;		/* Line valid */
+		uint64_t D:1;		/* Line dirty */
+		uint64_t L:1;		/* Line locked */
+		uint64_t U:1;		/* Use, LRU eviction */
+		uint64_t addr:19;	/* Phys mem addr (33..15) */
+	} cn30xx;
+	struct cvmx_l2c_tag_cn31xx {
+		uint64_t reserved:42;
+		uint64_t V:1;		/* Line valid */
+		uint64_t D:1;		/* Line dirty */
+		uint64_t L:1;		/* Line locked */
+		uint64_t U:1;		/* Use, LRU eviction */
+		uint64_t addr:18;	/* Phys mem addr (33..16) */
+	} cn31xx;
+	struct cvmx_l2c_tag_cn38xx {
+		uint64_t reserved:43;
+		uint64_t V:1;		/* Line valid */
+		uint64_t D:1;		/* Line dirty */
+		uint64_t L:1;		/* Line locked */
+		uint64_t U:1;		/* Use, LRU eviction */
+		uint64_t addr:17;	/* Phys mem addr (33..17) */
+	} cn38xx;
+	struct cvmx_l2c_tag_cn58xx {
+		uint64_t reserved:44;
+		uint64_t V:1;		/* Line valid */
+		uint64_t D:1;		/* Line dirty */
+		uint64_t L:1;		/* Line locked */
+		uint64_t U:1;		/* Use, LRU eviction */
+		uint64_t addr:16;	/* Phys mem addr (33..18) */
+	} cn58xx;
+	struct cvmx_l2c_tag_cn58xx cn56xx;	/* 2048 sets */
+	struct cvmx_l2c_tag_cn31xx cn52xx;	/* 512 sets */
+};
+
+
+/**
+ * @INTERNAL
+ * Function to read a L2C tag.  This code make the current core
+ * the 'debug core' for the L2.  This code must only be executed by
+ * 1 core at a time.
+ *
+ * @assoc:  Association (way) of the tag to dump
+ * @index:  Index of the cacheline
+ *
+ * Returns The Octeon model specific tag structure.  This is
+ *	   translated by a wrapper function to a generic form that is
+ *	   easier for applications to use.
+ */
+static union __cvmx_l2c_tag __read_l2_tag(uint64_t assoc, uint64_t index)
+{
+
+	uint64_t debug_tag_addr = CVMX_ADD_SEG(CVMX_MIPS_SPACE_XKPHYS, (index << 7) + 96);
+	uint64_t core = cvmx_get_core_num();
+	union __cvmx_l2c_tag tag_val;
+	uint64_t dbg_addr = CVMX_L2C_DBG;
+	unsigned long flags;
+
+	union cvmx_l2c_dbg debug_val;
+	debug_val.u64 = 0;
+	/*
+	 * For low core count parts, the core number is always small
+	 * enough to stay in the correct field and not set any
+	 * reserved bits.
+	 */
+	debug_val.s.ppnum = core;
+	debug_val.s.l2t = 1;
+	debug_val.s.set = assoc;
+
+	local_irq_save(flags);
+	/*
+	 * Make sure core is quiet (no prefetches, etc.) before
+	 * entering debug mode.
+	 */
+	CVMX_SYNC;
+	/* Flush L1 to make sure debug load misses L1 */
+	CVMX_DCACHE_INVALIDATE;
+
+	/*
+	 * The following must be done in assembly as when in debug
+	 * mode all data loads from L2 return special debug data, not
+	 * normal memory contents.  Also, interrupts must be disabled,
+	 * since if an interrupt occurs while in debug mode the ISR
+	 * will get debug data from all its memory * reads instead of
+	 * the contents of memory.
+	 */
+
+	asm volatile (
+		".set push\n\t"
+		".set mips64\n\t"
+		".set noreorder\n\t"
+		"sd    %[dbg_val], 0(%[dbg_addr])\n\t"	 /* Enter debug mode, wait for store */
+		"ld    $0, 0(%[dbg_addr])\n\t"
+		"ld    %[tag_val], 0(%[tag_addr])\n\t"	 /* Read L2C tag data */
+		"sd    $0, 0(%[dbg_addr])\n\t"		/* Exit debug mode, wait for store */
+		"ld    $0, 0(%[dbg_addr])\n\t"
+		"cache 9, 0($0)\n\t"		 /* Invalidate dcache to discard debug data */
+		".set pop"
+		: [tag_val] "=r" (tag_val)
+		: [dbg_addr] "r" (dbg_addr), [dbg_val] "r" (debug_val), [tag_addr] "r" (debug_tag_addr)
+		: "memory");
+
+	local_irq_restore(flags);
+
+	return tag_val;
+}
+
+
+union cvmx_l2c_tag cvmx_l2c_get_tag(uint32_t association, uint32_t index)
+{
+	union cvmx_l2c_tag tag;
+	tag.u64 = 0;
+
+	if ((int)association >= cvmx_l2c_get_num_assoc()) {
+		cvmx_dprintf("ERROR: cvmx_l2c_get_tag association out of range\n");
+		return tag;
+	}
+	if ((int)index >= cvmx_l2c_get_num_sets()) {
+		cvmx_dprintf("ERROR: cvmx_l2c_get_tag index out of range (arg: %d, max: %d)\n",
+			     (int)index, cvmx_l2c_get_num_sets());
+		return tag;
+	}
+	if (OCTEON_IS_MODEL(OCTEON_CN63XX)) {
+		union cvmx_l2c_tadx_tag l2c_tadx_tag;
+		uint64_t address = CVMX_ADD_SEG(CVMX_MIPS_SPACE_XKPHYS,
+						(association << CVMX_L2C_TAG_ADDR_ALIAS_SHIFT) |
+						(index << CVMX_L2C_IDX_ADDR_SHIFT));
+		/*
+		 * Use L2 cache Index load tag cache instruction, as
+		 * hardware loads the virtual tag for the L2 cache
+		 * block with the contents of L2C_TAD0_TAG
+		 * register.
+		 */
+		CVMX_CACHE_LTGL2I(address, 0);
+		CVMX_SYNC;   /* make sure CVMX_L2C_TADX_TAG is updated */
+		l2c_tadx_tag.u64 = cvmx_read_csr(CVMX_L2C_TADX_TAG(0));
+
+		tag.s.V	    = l2c_tadx_tag.s.valid;
+		tag.s.D	    = l2c_tadx_tag.s.dirty;
+		tag.s.L	    = l2c_tadx_tag.s.lock;
+		tag.s.U	    = l2c_tadx_tag.s.use;
+		tag.s.addr  = l2c_tadx_tag.s.tag;
+	} else {
+		union __cvmx_l2c_tag tmp_tag;
+		/* __read_l2_tag is intended for internal use only */
+		tmp_tag = __read_l2_tag(association, index);
+
+		/*
+		 * Convert all tag structure types to generic version,
+		 * as it can represent all models.
+		 */
+		if (OCTEON_IS_MODEL(OCTEON_CN58XX) || OCTEON_IS_MODEL(OCTEON_CN56XX)) {
+			tag.s.V	   = tmp_tag.cn58xx.V;
+			tag.s.D	   = tmp_tag.cn58xx.D;
+			tag.s.L	   = tmp_tag.cn58xx.L;
+			tag.s.U	   = tmp_tag.cn58xx.U;
+			tag.s.addr = tmp_tag.cn58xx.addr;
+		} else if (OCTEON_IS_MODEL(OCTEON_CN38XX)) {
+			tag.s.V	   = tmp_tag.cn38xx.V;
+			tag.s.D	   = tmp_tag.cn38xx.D;
+			tag.s.L	   = tmp_tag.cn38xx.L;
+			tag.s.U	   = tmp_tag.cn38xx.U;
+			tag.s.addr = tmp_tag.cn38xx.addr;
+		} else if (OCTEON_IS_MODEL(OCTEON_CN31XX) || OCTEON_IS_MODEL(OCTEON_CN52XX)) {
+			tag.s.V	   = tmp_tag.cn31xx.V;
+			tag.s.D	   = tmp_tag.cn31xx.D;
+			tag.s.L	   = tmp_tag.cn31xx.L;
+			tag.s.U	   = tmp_tag.cn31xx.U;
+			tag.s.addr = tmp_tag.cn31xx.addr;
+		} else if (OCTEON_IS_MODEL(OCTEON_CN30XX)) {
+			tag.s.V	   = tmp_tag.cn30xx.V;
+			tag.s.D	   = tmp_tag.cn30xx.D;
+			tag.s.L	   = tmp_tag.cn30xx.L;
+			tag.s.U	   = tmp_tag.cn30xx.U;
+			tag.s.addr = tmp_tag.cn30xx.addr;
+		} else if (OCTEON_IS_MODEL(OCTEON_CN50XX)) {
+			tag.s.V	   = tmp_tag.cn50xx.V;
+			tag.s.D	   = tmp_tag.cn50xx.D;
+			tag.s.L	   = tmp_tag.cn50xx.L;
+			tag.s.U	   = tmp_tag.cn50xx.U;
+			tag.s.addr = tmp_tag.cn50xx.addr;
+		} else {
+			cvmx_dprintf("Unsupported OCTEON Model in %s\n", __func__);
+		}
+	}
+	return tag;
+}
+
+uint32_t cvmx_l2c_address_to_index(uint64_t addr)
+{
+	uint64_t idx = addr >> CVMX_L2C_IDX_ADDR_SHIFT;
+	int indxalias = 0;
+
+	if (OCTEON_IS_MODEL(OCTEON_CN6XXX)) {
+		union cvmx_l2c_ctl l2c_ctl;
+		l2c_ctl.u64 = cvmx_read_csr(CVMX_L2C_CTL);
+		indxalias = !l2c_ctl.s.disidxalias;
+	} else {
+		union cvmx_l2c_cfg l2c_cfg;
+		l2c_cfg.u64 = cvmx_read_csr(CVMX_L2C_CFG);
+		indxalias = l2c_cfg.s.idxalias;
+	}
+
+	if (indxalias) {
+		if (OCTEON_IS_MODEL(OCTEON_CN63XX)) {
+			uint32_t a_14_12 = (idx / (CVMX_L2C_MEMBANK_SELECT_SIZE/(1<<CVMX_L2C_IDX_ADDR_SHIFT))) & 0x7;
+			idx ^= idx / cvmx_l2c_get_num_sets();
+			idx ^= a_14_12;
+		} else {
+			idx ^= ((addr & CVMX_L2C_ALIAS_MASK) >> CVMX_L2C_TAG_ADDR_ALIAS_SHIFT);
+		}
+	}
+	idx &= CVMX_L2C_IDX_MASK;
+	return idx;
+}
+
+int cvmx_l2c_get_cache_size_bytes(void)
+{
+	return cvmx_l2c_get_num_sets() * cvmx_l2c_get_num_assoc() *
+		CVMX_CACHE_LINE_SIZE;
+}
+
+/**
+ * Return log base 2 of the number of sets in the L2 cache
+ * Returns
+ */
+int cvmx_l2c_get_set_bits(void)
+{
+	int l2_set_bits;
+	if (OCTEON_IS_MODEL(OCTEON_CN56XX) || OCTEON_IS_MODEL(OCTEON_CN58XX))
+		l2_set_bits = 11;	/* 2048 sets */
+	else if (OCTEON_IS_MODEL(OCTEON_CN38XX) || OCTEON_IS_MODEL(OCTEON_CN63XX))
+		l2_set_bits = 10;	/* 1024 sets */
+	else if (OCTEON_IS_MODEL(OCTEON_CN31XX) || OCTEON_IS_MODEL(OCTEON_CN52XX))
+		l2_set_bits = 9;	/* 512 sets */
+	else if (OCTEON_IS_MODEL(OCTEON_CN30XX))
+		l2_set_bits = 8;	/* 256 sets */
+	else if (OCTEON_IS_MODEL(OCTEON_CN50XX))
+		l2_set_bits = 7;	/* 128 sets */
+	else {
+		cvmx_dprintf("Unsupported OCTEON Model in %s\n", __func__);
+		l2_set_bits = 11;	/* 2048 sets */
+	}
+	return l2_set_bits;
+}
+
+/* Return the number of sets in the L2 Cache */
+int cvmx_l2c_get_num_sets(void)
+{
+	return 1 << cvmx_l2c_get_set_bits();
+}
+
+/* Return the number of associations in the L2 Cache */
+int cvmx_l2c_get_num_assoc(void)
+{
+	int l2_assoc;
+	if (OCTEON_IS_MODEL(OCTEON_CN56XX) ||
+	    OCTEON_IS_MODEL(OCTEON_CN52XX) ||
+	    OCTEON_IS_MODEL(OCTEON_CN58XX) ||
+	    OCTEON_IS_MODEL(OCTEON_CN50XX) ||
+	    OCTEON_IS_MODEL(OCTEON_CN38XX))
+		l2_assoc = 8;
+	else if (OCTEON_IS_MODEL(OCTEON_CN63XX))
+		l2_assoc = 16;
+	else if (OCTEON_IS_MODEL(OCTEON_CN31XX) ||
+		 OCTEON_IS_MODEL(OCTEON_CN30XX))
+		l2_assoc = 4;
+	else {
+		cvmx_dprintf("Unsupported OCTEON Model in %s\n", __func__);
+		l2_assoc = 8;
+	}
+
+	/* Check to see if part of the cache is disabled */
+	if (OCTEON_IS_MODEL(OCTEON_CN63XX)) {
+		union cvmx_mio_fus_dat3 mio_fus_dat3;
+
+		mio_fus_dat3.u64 = cvmx_read_csr(CVMX_MIO_FUS_DAT3);
+		/*
+		 * cvmx_mio_fus_dat3.s.l2c_crip fuses map as follows
+		 * <2> will be not used for 63xx
+		 * <1> disables 1/2 ways
+		 * <0> disables 1/4 ways
+		 * They are cumulative, so for 63xx:
+		 * <1> <0>
+		 * 0 0 16-way 2MB cache
+		 * 0 1 12-way 1.5MB cache
+		 * 1 0 8-way 1MB cache
+		 * 1 1 4-way 512KB cache
+		 */
+
+		if (mio_fus_dat3.s.l2c_crip == 3)
+			l2_assoc = 4;
+		else if (mio_fus_dat3.s.l2c_crip == 2)
+			l2_assoc = 8;
+		else if (mio_fus_dat3.s.l2c_crip == 1)
+			l2_assoc = 12;
+	} else {
+		union cvmx_l2d_fus3 val;
+		val.u64 = cvmx_read_csr(CVMX_L2D_FUS3);
+		/*
+		 * Using shifts here, as bit position names are
+		 * different for each model but they all mean the
+		 * same.
+		 */
+		if ((val.u64 >> 35) & 0x1)
+			l2_assoc = l2_assoc >> 2;
+		else if ((val.u64 >> 34) & 0x1)
+			l2_assoc = l2_assoc >> 1;
+	}
+	return l2_assoc;
+}
+
+/**
+ * Flush a line from the L2 cache
+ * This should only be called from one core at a time, as this routine
+ * sets the core to the 'debug' core in order to flush the line.
+ *
+ * @assoc:  Association (or way) to flush
+ * @index:  Index to flush
+ */
+void cvmx_l2c_flush_line(uint32_t assoc, uint32_t index)
+{
+	/* Check the range of the index. */
+	if (index > (uint32_t)cvmx_l2c_get_num_sets()) {
+		cvmx_dprintf("ERROR: cvmx_l2c_flush_line index out of range.\n");
+		return;
+	}
+
+	/* Check the range of association. */
+	if (assoc > (uint32_t)cvmx_l2c_get_num_assoc()) {
+		cvmx_dprintf("ERROR: cvmx_l2c_flush_line association out of range.\n");
+		return;
+	}
+
+	if (OCTEON_IS_MODEL(OCTEON_CN63XX)) {
+		uint64_t address;
+		/* Create the address based on index and association.
+		 * Bits<20:17> select the way of the cache block involved in
+		 *	       the operation
+		 * Bits<16:7> of the effect address select the index
+		 */
+		address = CVMX_ADD_SEG(CVMX_MIPS_SPACE_XKPHYS,
+				(assoc << CVMX_L2C_TAG_ADDR_ALIAS_SHIFT) |
+				(index << CVMX_L2C_IDX_ADDR_SHIFT));
+		CVMX_CACHE_WBIL2I(address, 0);
+	} else {
+		union cvmx_l2c_dbg l2cdbg;
+
+		l2cdbg.u64 = 0;
+		if (!OCTEON_IS_MODEL(OCTEON_CN30XX))
+			l2cdbg.s.ppnum = cvmx_get_core_num();
+		l2cdbg.s.finv = 1;
+
+		l2cdbg.s.set = assoc;
+		cvmx_spinlock_lock(&cvmx_l2c_spinlock);
+		/*
+		 * Enter debug mode, and make sure all other writes
+		 * complete before we enter debug mode
+		 */
+		CVMX_SYNC;
+		cvmx_write_csr(CVMX_L2C_DBG, l2cdbg.u64);
+		cvmx_read_csr(CVMX_L2C_DBG);
+
+		CVMX_PREPARE_FOR_STORE(CVMX_ADD_SEG(CVMX_MIPS_SPACE_XKPHYS,
+						    index * CVMX_CACHE_LINE_SIZE),
+				       0);
+		/* Exit debug mode */
+		CVMX_SYNC;
+		cvmx_write_csr(CVMX_L2C_DBG, 0);
+		cvmx_read_csr(CVMX_L2C_DBG);
+		cvmx_spinlock_unlock(&cvmx_l2c_spinlock);
+	}
+}

arch/mips/cavium-octeon/executive/cvmx-pko.c

@@ -0,0 +1,507 @@
+/***********************license start***************
+ * Author: Cavium Networks
+ *
+ * Contact: support@caviumnetworks.com
+ * This file is part of the OCTEON SDK
+ *
+ * Copyright (c) 2003-2008 Cavium Networks
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, Version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This file is distributed in the hope that it will be useful, but
+ * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
+ * NONINFRINGEMENT.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this file; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * or visit http://www.gnu.org/licenses/.
+ *
+ * This file may also be available under a different license from Cavium.
+ * Contact Cavium Networks for more information
+ ***********************license end**************************************/
+
+/*
+ * Support library for the hardware Packet Output unit.
+ */
+
+#include <asm/octeon/octeon.h>
+
+#include <asm/octeon/cvmx-config.h>
+#include <asm/octeon/cvmx-pko.h>
+#include <asm/octeon/cvmx-helper.h>
+
+/**
+ * Internal state of packet output
+ */
+
+/**
+ * Call before any other calls to initialize the packet
+ * output system.  This does chip global config, and should only be
+ * done by one core.
+ */
+
+void cvmx_pko_initialize_global(void)
+{
+	int i;
+	uint64_t priority = 8;
+	union cvmx_pko_reg_cmd_buf config;
+
+	/*
+	 * Set the size of the PKO command buffers to an odd number of
+	 * 64bit words. This allows the normal two word send to stay
+	 * aligned and never span a comamnd word buffer.
+	 */
+	config.u64 = 0;
+	config.s.pool = CVMX_FPA_OUTPUT_BUFFER_POOL;
+	config.s.size = CVMX_FPA_OUTPUT_BUFFER_POOL_SIZE / 8 - 1;
+
+	cvmx_write_csr(CVMX_PKO_REG_CMD_BUF, config.u64);
+
+	for (i = 0; i < CVMX_PKO_MAX_OUTPUT_QUEUES; i++)
+		cvmx_pko_config_port(CVMX_PKO_MEM_QUEUE_PTRS_ILLEGAL_PID, i, 1,
+				     &priority);
+
+	/*
+	 * If we aren't using all of the queues optimize PKO's
+	 * internal memory.
+	 */
+	if (OCTEON_IS_MODEL(OCTEON_CN38XX) || OCTEON_IS_MODEL(OCTEON_CN58XX)
+	    || OCTEON_IS_MODEL(OCTEON_CN56XX)
+	    || OCTEON_IS_MODEL(OCTEON_CN52XX)) {
+		int num_interfaces = cvmx_helper_get_number_of_interfaces();
+		int last_port =
+		    cvmx_helper_get_last_ipd_port(num_interfaces - 1);
+		int max_queues =
+		    cvmx_pko_get_base_queue(last_port) +
+		    cvmx_pko_get_num_queues(last_port);
+		if (OCTEON_IS_MODEL(OCTEON_CN38XX)) {
+			if (max_queues <= 32)
+				cvmx_write_csr(CVMX_PKO_REG_QUEUE_MODE, 2);
+			else if (max_queues <= 64)
+				cvmx_write_csr(CVMX_PKO_REG_QUEUE_MODE, 1);
+		} else {
+			if (max_queues <= 64)
+				cvmx_write_csr(CVMX_PKO_REG_QUEUE_MODE, 2);
+			else if (max_queues <= 128)
+				cvmx_write_csr(CVMX_PKO_REG_QUEUE_MODE, 1);
+		}
+	}
+}
+
+/**
+ * This function does per-core initialization required by the PKO routines.
+ * This must be called on all cores that will do packet output, and must
+ * be called after the FPA has been initialized and filled with pages.
+ *
+ * Returns 0 on success
+ *	   !0 on failure
+ */
+int cvmx_pko_initialize_local(void)
+{
+	/* Nothing to do */
+	return 0;
+}
+
+/**
+ * Enables the packet output hardware. It must already be
+ * configured.
+ */
+void cvmx_pko_enable(void)
+{
+	union cvmx_pko_reg_flags flags;
+
+	flags.u64 = cvmx_read_csr(CVMX_PKO_REG_FLAGS);
+	if (flags.s.ena_pko)
+		cvmx_dprintf
+		    ("Warning: Enabling PKO when PKO already enabled.\n");
+
+	flags.s.ena_dwb = 1;
+	flags.s.ena_pko = 1;
+	/*
+	 * always enable big endian for 3-word command. Does nothing
+	 * for 2-word.
+	 */
+	flags.s.store_be = 1;
+	cvmx_write_csr(CVMX_PKO_REG_FLAGS, flags.u64);
+}
+
+/**
+ * Disables the packet output. Does not affect any configuration.
+ */
+void cvmx_pko_disable(void)
+{
+	union cvmx_pko_reg_flags pko_reg_flags;
+	pko_reg_flags.u64 = cvmx_read_csr(CVMX_PKO_REG_FLAGS);
+	pko_reg_flags.s.ena_pko = 0;
+	cvmx_write_csr(CVMX_PKO_REG_FLAGS, pko_reg_flags.u64);
+}
+EXPORT_SYMBOL_GPL(cvmx_pko_disable);
+
+/**
+ * Reset the packet output.
+ */
+static void __cvmx_pko_reset(void)
+{
+	union cvmx_pko_reg_flags pko_reg_flags;
+	pko_reg_flags.u64 = cvmx_read_csr(CVMX_PKO_REG_FLAGS);
+	pko_reg_flags.s.reset = 1;
+	cvmx_write_csr(CVMX_PKO_REG_FLAGS, pko_reg_flags.u64);
+}
+
+/**
+ * Shutdown and free resources required by packet output.
+ */
+void cvmx_pko_shutdown(void)
+{
+	union cvmx_pko_mem_queue_ptrs config;
+	int queue;
+
+	cvmx_pko_disable();
+
+	for (queue = 0; queue < CVMX_PKO_MAX_OUTPUT_QUEUES; queue++) {
+		config.u64 = 0;
+		config.s.tail = 1;
+		config.s.index = 0;
+		config.s.port = CVMX_PKO_MEM_QUEUE_PTRS_ILLEGAL_PID;
+		config.s.queue = queue & 0x7f;
+		config.s.qos_mask = 0;
+		config.s.buf_ptr = 0;
+		if (!OCTEON_IS_MODEL(OCTEON_CN3XXX)) {
+			union cvmx_pko_reg_queue_ptrs1 config1;
+			config1.u64 = 0;
+			config1.s.qid7 = queue >> 7;
+			cvmx_write_csr(CVMX_PKO_REG_QUEUE_PTRS1, config1.u64);
+		}
+		cvmx_write_csr(CVMX_PKO_MEM_QUEUE_PTRS, config.u64);
+		cvmx_cmd_queue_shutdown(CVMX_CMD_QUEUE_PKO(queue));
+	}
+	__cvmx_pko_reset();
+}
+EXPORT_SYMBOL_GPL(cvmx_pko_shutdown);
+
+/**
+ * Configure a output port and the associated queues for use.
+ *
+ * @port:	Port to configure.
+ * @base_queue: First queue number to associate with this port.
+ * @num_queues: Number of queues to associate with this port
+ * @priority:	Array of priority levels for each queue. Values are
+ *		     allowed to be 0-8. A value of 8 get 8 times the traffic
+ *		     of a value of 1.  A value of 0 indicates that no rounds
+ *		     will be participated in. These priorities can be changed
+ *		     on the fly while the pko is enabled. A priority of 9
+ *		     indicates that static priority should be used.  If static
+ *		     priority is used all queues with static priority must be
+ *		     contiguous starting at the base_queue, and lower numbered
+ *		     queues have higher priority than higher numbered queues.
+ *		     There must be num_queues elements in the array.
+ */
+cvmx_pko_status_t cvmx_pko_config_port(uint64_t port, uint64_t base_queue,
+				       uint64_t num_queues,
+				       const uint64_t priority[])
+{
+	cvmx_pko_status_t result_code;
+	uint64_t queue;
+	union cvmx_pko_mem_queue_ptrs config;
+	union cvmx_pko_reg_queue_ptrs1 config1;
+	int static_priority_base = -1;
+	int static_priority_end = -1;
+
+	if ((port >= CVMX_PKO_NUM_OUTPUT_PORTS)
+	    && (port != CVMX_PKO_MEM_QUEUE_PTRS_ILLEGAL_PID)) {
+		cvmx_dprintf("ERROR: cvmx_pko_config_port: Invalid port %llu\n",
+			     (unsigned long long)port);
+		return CVMX_PKO_INVALID_PORT;
+	}
+
+	if (base_queue + num_queues > CVMX_PKO_MAX_OUTPUT_QUEUES) {
+		cvmx_dprintf
+		    ("ERROR: cvmx_pko_config_port: Invalid queue range %llu\n",
+		     (unsigned long long)(base_queue + num_queues));
+		return CVMX_PKO_INVALID_QUEUE;
+	}
+
+	if (port != CVMX_PKO_MEM_QUEUE_PTRS_ILLEGAL_PID) {
+		/*
+		 * Validate the static queue priority setup and set
+		 * static_priority_base and static_priority_end
+		 * accordingly.
+		 */
+		for (queue = 0; queue < num_queues; queue++) {
+			/* Find first queue of static priority */
+			if (static_priority_base == -1
+			    && priority[queue] ==
+			    CVMX_PKO_QUEUE_STATIC_PRIORITY)
+				static_priority_base = queue;
+			/* Find last queue of static priority */
+			if (static_priority_base != -1
+			    && static_priority_end == -1
+			    && priority[queue] != CVMX_PKO_QUEUE_STATIC_PRIORITY
+			    && queue)
+				static_priority_end = queue - 1;
+			else if (static_priority_base != -1
+				 && static_priority_end == -1
+				 && queue == num_queues - 1)
+				/* all queues are static priority */
+				static_priority_end = queue;
+			/*
+			 * Check to make sure all static priority
+			 * queues are contiguous.  Also catches some
+			 * cases of static priorites not starting at
+			 * queue 0.
+			 */
+			if (static_priority_end != -1
+			    && (int)queue > static_priority_end
+			    && priority[queue] ==
+			    CVMX_PKO_QUEUE_STATIC_PRIORITY) {
+				cvmx_dprintf("ERROR: cvmx_pko_config_port: "
+					     "Static priority queues aren't "
+					     "contiguous or don't start at "
+					     "base queue. q: %d, eq: %d\n",
+					(int)queue, static_priority_end);
+				return CVMX_PKO_INVALID_PRIORITY;
+			}
+		}
+		if (static_priority_base > 0) {
+			cvmx_dprintf("ERROR: cvmx_pko_config_port: Static "
+				     "priority queues don't start at base "
+				     "queue. sq: %d\n",
+				static_priority_base);
+			return CVMX_PKO_INVALID_PRIORITY;
+		}
+#if 0
+		cvmx_dprintf("Port %d: Static priority queue base: %d, "
+			     "end: %d\n", port,
+			static_priority_base, static_priority_end);
+#endif
+	}
+	/*
+	 * At this point, static_priority_base and static_priority_end
+	 * are either both -1, or are valid start/end queue
+	 * numbers.
+	 */
+
+	result_code = CVMX_PKO_SUCCESS;
+
+#ifdef PKO_DEBUG
+	cvmx_dprintf("num queues: %d (%lld,%lld)\n", num_queues,
+		     CVMX_PKO_QUEUES_PER_PORT_INTERFACE0,
+		     CVMX_PKO_QUEUES_PER_PORT_INTERFACE1);
+#endif
+
+	for (queue = 0; queue < num_queues; queue++) {
+		uint64_t *buf_ptr = NULL;
+
+		config1.u64 = 0;
+		config1.s.idx3 = queue >> 3;
+		config1.s.qid7 = (base_queue + queue) >> 7;
+
+		config.u64 = 0;
+		config.s.tail = queue == (num_queues - 1);
+		config.s.index = queue;
+		config.s.port = port;
+		config.s.queue = base_queue + queue;
+
+		if (!cvmx_octeon_is_pass1()) {
+			config.s.static_p = static_priority_base >= 0;
+			config.s.static_q = (int)queue <= static_priority_end;
+			config.s.s_tail = (int)queue == static_priority_end;
+		}
+		/*
+		 * Convert the priority into an enable bit field. Try
+		 * to space the bits out evenly so the packet don't
+		 * get grouped up
+		 */
+		switch ((int)priority[queue]) {
+		case 0:
+			config.s.qos_mask = 0x00;
+			break;
+		case 1:
+			config.s.qos_mask = 0x01;
+			break;
+		case 2:
+			config.s.qos_mask = 0x11;
+			break;
+		case 3:
+			config.s.qos_mask = 0x49;
+			break;
+		case 4:
+			config.s.qos_mask = 0x55;
+			break;
+		case 5:
+			config.s.qos_mask = 0x57;
+			break;
+		case 6:
+			config.s.qos_mask = 0x77;
+			break;
+		case 7:
+			config.s.qos_mask = 0x7f;
+			break;
+		case 8:
+			config.s.qos_mask = 0xff;
+			break;
+		case CVMX_PKO_QUEUE_STATIC_PRIORITY:
+			/* Pass 1 will fall through to the error case */
+			if (!cvmx_octeon_is_pass1()) {
+				config.s.qos_mask = 0xff;
+				break;
+			}
+		default:
+			cvmx_dprintf("ERROR: cvmx_pko_config_port: Invalid "
+				     "priority %llu\n",
+				(unsigned long long)priority[queue]);
+			config.s.qos_mask = 0xff;
+			result_code = CVMX_PKO_INVALID_PRIORITY;
+			break;
+		}
+
+		if (port != CVMX_PKO_MEM_QUEUE_PTRS_ILLEGAL_PID) {
+			cvmx_cmd_queue_result_t cmd_res =
+			    cvmx_cmd_queue_initialize(CVMX_CMD_QUEUE_PKO
+						      (base_queue + queue),
+						      CVMX_PKO_MAX_QUEUE_DEPTH,
+						      CVMX_FPA_OUTPUT_BUFFER_POOL,
+						      CVMX_FPA_OUTPUT_BUFFER_POOL_SIZE
+						      -
+						      CVMX_PKO_COMMAND_BUFFER_SIZE_ADJUST
+						      * 8);
+			if (cmd_res != CVMX_CMD_QUEUE_SUCCESS) {
+				switch (cmd_res) {
+				case CVMX_CMD_QUEUE_NO_MEMORY:
+					cvmx_dprintf("ERROR: "
+						     "cvmx_pko_config_port: "
+						     "Unable to allocate "
+						     "output buffer.\n");
+					return CVMX_PKO_NO_MEMORY;
+				case CVMX_CMD_QUEUE_ALREADY_SETUP:
+					cvmx_dprintf
+					    ("ERROR: cvmx_pko_config_port: Port already setup.\n");
+					return CVMX_PKO_PORT_ALREADY_SETUP;
+				case CVMX_CMD_QUEUE_INVALID_PARAM:
+				default:
+					cvmx_dprintf
+					    ("ERROR: cvmx_pko_config_port: Command queue initialization failed.\n");
+					return CVMX_PKO_CMD_QUEUE_INIT_ERROR;
+				}
+			}
+
+			buf_ptr =
+			    (uint64_t *)
+			    cvmx_cmd_queue_buffer(CVMX_CMD_QUEUE_PKO
+						  (base_queue + queue));
+			config.s.buf_ptr = cvmx_ptr_to_phys(buf_ptr);
+		} else
+			config.s.buf_ptr = 0;
+
+		CVMX_SYNCWS;
+
+		if (!OCTEON_IS_MODEL(OCTEON_CN3XXX))
+			cvmx_write_csr(CVMX_PKO_REG_QUEUE_PTRS1, config1.u64);
+		cvmx_write_csr(CVMX_PKO_MEM_QUEUE_PTRS, config.u64);
+	}
+
+	return result_code;
+}
+
+#ifdef PKO_DEBUG
+/**
+ * Show map of ports -> queues for different cores.
+ */
+void cvmx_pko_show_queue_map()
+{
+	int core, port;
+	int pko_output_ports = 36;
+
+	cvmx_dprintf("port");
+	for (port = 0; port < pko_output_ports; port++)
+		cvmx_dprintf("%3d ", port);
+	cvmx_dprintf("\n");
+
+	for (core = 0; core < CVMX_MAX_CORES; core++) {
+		cvmx_dprintf("\n%2d: ", core);
+		for (port = 0; port < pko_output_ports; port++) {
+			cvmx_dprintf("%3d ",
+				     cvmx_pko_get_base_queue_per_core(port,
+								      core));
+		}
+	}
+	cvmx_dprintf("\n");
+}
+#endif
+
+/**
+ * Rate limit a PKO port to a max packets/sec. This function is only
+ * supported on CN51XX and higher, excluding CN58XX.
+ *
+ * @port:      Port to rate limit
+ * @packets_s: Maximum packet/sec
+ * @burst:     Maximum number of packets to burst in a row before rate
+ *		    limiting cuts in.
+ *
+ * Returns Zero on success, negative on failure
+ */
+int cvmx_pko_rate_limit_packets(int port, int packets_s, int burst)
+{
+	union cvmx_pko_mem_port_rate0 pko_mem_port_rate0;
+	union cvmx_pko_mem_port_rate1 pko_mem_port_rate1;
+
+	pko_mem_port_rate0.u64 = 0;
+	pko_mem_port_rate0.s.pid = port;
+	pko_mem_port_rate0.s.rate_pkt =
+	    cvmx_sysinfo_get()->cpu_clock_hz / packets_s / 16;
+	/* No cost per word since we are limited by packets/sec, not bits/sec */
+	pko_mem_port_rate0.s.rate_word = 0;
+
+	pko_mem_port_rate1.u64 = 0;
+	pko_mem_port_rate1.s.pid = port;
+	pko_mem_port_rate1.s.rate_lim =
+	    ((uint64_t) pko_mem_port_rate0.s.rate_pkt * burst) >> 8;
+
+	cvmx_write_csr(CVMX_PKO_MEM_PORT_RATE0, pko_mem_port_rate0.u64);
+	cvmx_write_csr(CVMX_PKO_MEM_PORT_RATE1, pko_mem_port_rate1.u64);
+	return 0;
+}
+
+/**
+ * Rate limit a PKO port to a max bits/sec. This function is only
+ * supported on CN51XX and higher, excluding CN58XX.
+ *
+ * @port:   Port to rate limit
+ * @bits_s: PKO rate limit in bits/sec
+ * @burst:  Maximum number of bits to burst before rate
+ *		 limiting cuts in.
+ *
+ * Returns Zero on success, negative on failure
+ */
+int cvmx_pko_rate_limit_bits(int port, uint64_t bits_s, int burst)
+{
+	union cvmx_pko_mem_port_rate0 pko_mem_port_rate0;
+	union cvmx_pko_mem_port_rate1 pko_mem_port_rate1;
+	uint64_t clock_rate = cvmx_sysinfo_get()->cpu_clock_hz;
+	uint64_t tokens_per_bit = clock_rate * 16 / bits_s;
+
+	pko_mem_port_rate0.u64 = 0;
+	pko_mem_port_rate0.s.pid = port;
+	/*
+	 * Each packet has a 12 bytes of interframe gap, an 8 byte
+	 * preamble, and a 4 byte CRC. These are not included in the
+	 * per word count. Multiply by 8 to covert to bits and divide
+	 * by 256 for limit granularity.
+	 */
+	pko_mem_port_rate0.s.rate_pkt = (12 + 8 + 4) * 8 * tokens_per_bit / 256;
+	/* Each 8 byte word has 64bits */
+	pko_mem_port_rate0.s.rate_word = 64 * tokens_per_bit;
+
+	pko_mem_port_rate1.u64 = 0;
+	pko_mem_port_rate1.s.pid = port;
+	pko_mem_port_rate1.s.rate_lim = tokens_per_bit * burst / 256;
+
+	cvmx_write_csr(CVMX_PKO_MEM_PORT_RATE0, pko_mem_port_rate0.u64);
+	cvmx_write_csr(CVMX_PKO_MEM_PORT_RATE1, pko_mem_port_rate1.u64);
+	return 0;
+}

arch/mips/cavium-octeon/executive/cvmx-spi.c

@@ -0,0 +1,668 @@
+/***********************license start***************
+ * Author: Cavium Networks
+ *
+ * Contact: support@caviumnetworks.com
+ * This file is part of the OCTEON SDK
+ *
+ * Copyright (c) 2003-2008 Cavium Networks
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, Version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This file is distributed in the hope that it will be useful, but
+ * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
+ * NONINFRINGEMENT.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this file; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * or visit http://www.gnu.org/licenses/.
+ *
+ * This file may also be available under a different license from Cavium.
+ * Contact Cavium Networks for more information
+ ***********************license end**************************************/
+
+/*
+ *
+ * Support library for the SPI
+ */
+#include <asm/octeon/octeon.h>
+
+#include <asm/octeon/cvmx-config.h>
+
+#include <asm/octeon/cvmx-pko.h>
+#include <asm/octeon/cvmx-spi.h>
+
+#include <asm/octeon/cvmx-spxx-defs.h>
+#include <asm/octeon/cvmx-stxx-defs.h>
+#include <asm/octeon/cvmx-srxx-defs.h>
+
+#define INVOKE_CB(function_p, args...)		\
+	do {					\
+		if (function_p) {		\
+			res = function_p(args); \
+			if (res)		\
+				return res;	\
+		}				\
+	} while (0)
+
+#if CVMX_ENABLE_DEBUG_PRINTS
+static const char *modes[] =
+    { "UNKNOWN", "TX Halfplex", "Rx Halfplex", "Duplex" };
+#endif
+
+/* Default callbacks, can be overridden
+ *  using cvmx_spi_get_callbacks/cvmx_spi_set_callbacks
+ */
+static cvmx_spi_callbacks_t cvmx_spi_callbacks = {
+	.reset_cb = cvmx_spi_reset_cb,
+	.calendar_setup_cb = cvmx_spi_calendar_setup_cb,
+	.clock_detect_cb = cvmx_spi_clock_detect_cb,
+	.training_cb = cvmx_spi_training_cb,
+	.calendar_sync_cb = cvmx_spi_calendar_sync_cb,
+	.interface_up_cb = cvmx_spi_interface_up_cb
+};
+
+/**
+ * Get current SPI4 initialization callbacks
+ *
+ * @callbacks:	Pointer to the callbacks structure.to fill
+ *
+ * Returns Pointer to cvmx_spi_callbacks_t structure.
+ */
+void cvmx_spi_get_callbacks(cvmx_spi_callbacks_t *callbacks)
+{
+	memcpy(callbacks, &cvmx_spi_callbacks, sizeof(cvmx_spi_callbacks));
+}
+
+/**
+ * Set new SPI4 initialization callbacks
+ *
+ * @new_callbacks:  Pointer to an updated callbacks structure.
+ */
+void cvmx_spi_set_callbacks(cvmx_spi_callbacks_t *new_callbacks)
+{
+	memcpy(&cvmx_spi_callbacks, new_callbacks, sizeof(cvmx_spi_callbacks));
+}
+
+/**
+ * Initialize and start the SPI interface.
+ *
+ * @interface: The identifier of the packet interface to configure and
+ *		    use as a SPI interface.
+ * @mode:      The operating mode for the SPI interface. The interface
+ *		    can operate as a full duplex (both Tx and Rx data paths
+ *		    active) or as a halfplex (either the Tx data path is
+ *		    active or the Rx data path is active, but not both).
+ * @timeout:   Timeout to wait for clock synchronization in seconds
+ * @num_ports: Number of SPI ports to configure
+ *
+ * Returns Zero on success, negative of failure.
+ */
+int cvmx_spi_start_interface(int interface, cvmx_spi_mode_t mode, int timeout,
+			     int num_ports)
+{
+	int res = -1;
+
+	if (!(OCTEON_IS_MODEL(OCTEON_CN38XX) || OCTEON_IS_MODEL(OCTEON_CN58XX)))
+		return res;
+
+	/* Callback to perform SPI4 reset */
+	INVOKE_CB(cvmx_spi_callbacks.reset_cb, interface, mode);
+
+	/* Callback to perform calendar setup */
+	INVOKE_CB(cvmx_spi_callbacks.calendar_setup_cb, interface, mode,
+		  num_ports);
+
+	/* Callback to perform clock detection */
+	INVOKE_CB(cvmx_spi_callbacks.clock_detect_cb, interface, mode, timeout);
+
+	/* Callback to perform SPI4 link training */
+	INVOKE_CB(cvmx_spi_callbacks.training_cb, interface, mode, timeout);
+
+	/* Callback to perform calendar sync */
+	INVOKE_CB(cvmx_spi_callbacks.calendar_sync_cb, interface, mode,
+		  timeout);
+
+	/* Callback to handle interface coming up */
+	INVOKE_CB(cvmx_spi_callbacks.interface_up_cb, interface, mode);
+
+	return res;
+}
+
+/**
+ * This routine restarts the SPI interface after it has lost synchronization
+ * with its correspondent system.
+ *
+ * @interface: The identifier of the packet interface to configure and
+ *		    use as a SPI interface.
+ * @mode:      The operating mode for the SPI interface. The interface
+ *		    can operate as a full duplex (both Tx and Rx data paths
+ *		    active) or as a halfplex (either the Tx data path is
+ *		    active or the Rx data path is active, but not both).
+ * @timeout:   Timeout to wait for clock synchronization in seconds
+ *
+ * Returns Zero on success, negative of failure.
+ */
+int cvmx_spi_restart_interface(int interface, cvmx_spi_mode_t mode, int timeout)
+{
+	int res = -1;
+
+	if (!(OCTEON_IS_MODEL(OCTEON_CN38XX) || OCTEON_IS_MODEL(OCTEON_CN58XX)))
+		return res;
+
+	cvmx_dprintf("SPI%d: Restart %s\n", interface, modes[mode]);
+
+	/* Callback to perform SPI4 reset */
+	INVOKE_CB(cvmx_spi_callbacks.reset_cb, interface, mode);
+
+	/* NOTE: Calendar setup is not performed during restart */
+	/*	 Refer to cvmx_spi_start_interface() for the full sequence */
+
+	/* Callback to perform clock detection */
+	INVOKE_CB(cvmx_spi_callbacks.clock_detect_cb, interface, mode, timeout);
+
+	/* Callback to perform SPI4 link training */
+	INVOKE_CB(cvmx_spi_callbacks.training_cb, interface, mode, timeout);
+
+	/* Callback to perform calendar sync */
+	INVOKE_CB(cvmx_spi_callbacks.calendar_sync_cb, interface, mode,
+		  timeout);
+
+	/* Callback to handle interface coming up */
+	INVOKE_CB(cvmx_spi_callbacks.interface_up_cb, interface, mode);
+
+	return res;
+}
+EXPORT_SYMBOL_GPL(cvmx_spi_restart_interface);
+
+/**
+ * Callback to perform SPI4 reset
+ *
+ * @interface: The identifier of the packet interface to configure and
+ *		    use as a SPI interface.
+ * @mode:      The operating mode for the SPI interface. The interface
+ *		    can operate as a full duplex (both Tx and Rx data paths
+ *		    active) or as a halfplex (either the Tx data path is
+ *		    active or the Rx data path is active, but not both).
+ *
+ * Returns Zero on success, non-zero error code on failure (will cause
+ * SPI initialization to abort)
+ */
+int cvmx_spi_reset_cb(int interface, cvmx_spi_mode_t mode)
+{
+	union cvmx_spxx_dbg_deskew_ctl spxx_dbg_deskew_ctl;
+	union cvmx_spxx_clk_ctl spxx_clk_ctl;
+	union cvmx_spxx_bist_stat spxx_bist_stat;
+	union cvmx_spxx_int_msk spxx_int_msk;
+	union cvmx_stxx_int_msk stxx_int_msk;
+	union cvmx_spxx_trn4_ctl spxx_trn4_ctl;
+	int index;
+	uint64_t MS = cvmx_sysinfo_get()->cpu_clock_hz / 1000;
+
+	/* Disable SPI error events while we run BIST */
+	spxx_int_msk.u64 = cvmx_read_csr(CVMX_SPXX_INT_MSK(interface));
+	cvmx_write_csr(CVMX_SPXX_INT_MSK(interface), 0);
+	stxx_int_msk.u64 = cvmx_read_csr(CVMX_STXX_INT_MSK(interface));
+	cvmx_write_csr(CVMX_STXX_INT_MSK(interface), 0);
+
+	/* Run BIST in the SPI interface */
+	cvmx_write_csr(CVMX_SRXX_COM_CTL(interface), 0);
+	cvmx_write_csr(CVMX_STXX_COM_CTL(interface), 0);
+	spxx_clk_ctl.u64 = 0;
+	spxx_clk_ctl.s.runbist = 1;
+	cvmx_write_csr(CVMX_SPXX_CLK_CTL(interface), spxx_clk_ctl.u64);
+	cvmx_wait(10 * MS);
+	spxx_bist_stat.u64 = cvmx_read_csr(CVMX_SPXX_BIST_STAT(interface));
+	if (spxx_bist_stat.s.stat0)
+		cvmx_dprintf
+		    ("ERROR SPI%d: BIST failed on receive datapath FIFO\n",
+		     interface);
+	if (spxx_bist_stat.s.stat1)
+		cvmx_dprintf("ERROR SPI%d: BIST failed on RX calendar table\n",
+			     interface);
+	if (spxx_bist_stat.s.stat2)
+		cvmx_dprintf("ERROR SPI%d: BIST failed on TX calendar table\n",
+			     interface);
+
+	/* Clear the calendar table after BIST to fix parity errors */
+	for (index = 0; index < 32; index++) {
+		union cvmx_srxx_spi4_calx srxx_spi4_calx;
+		union cvmx_stxx_spi4_calx stxx_spi4_calx;
+
+		srxx_spi4_calx.u64 = 0;
+		srxx_spi4_calx.s.oddpar = 1;
+		cvmx_write_csr(CVMX_SRXX_SPI4_CALX(index, interface),
+			       srxx_spi4_calx.u64);
+
+		stxx_spi4_calx.u64 = 0;
+		stxx_spi4_calx.s.oddpar = 1;
+		cvmx_write_csr(CVMX_STXX_SPI4_CALX(index, interface),
+			       stxx_spi4_calx.u64);
+	}
+
+	/* Re enable reporting of error interrupts */
+	cvmx_write_csr(CVMX_SPXX_INT_REG(interface),
+		       cvmx_read_csr(CVMX_SPXX_INT_REG(interface)));
+	cvmx_write_csr(CVMX_SPXX_INT_MSK(interface), spxx_int_msk.u64);
+	cvmx_write_csr(CVMX_STXX_INT_REG(interface),
+		       cvmx_read_csr(CVMX_STXX_INT_REG(interface)));
+	cvmx_write_csr(CVMX_STXX_INT_MSK(interface), stxx_int_msk.u64);
+
+	/* Setup the CLKDLY right in the middle */
+	spxx_clk_ctl.u64 = 0;
+	spxx_clk_ctl.s.seetrn = 0;
+	spxx_clk_ctl.s.clkdly = 0x10;
+	spxx_clk_ctl.s.runbist = 0;
+	spxx_clk_ctl.s.statdrv = 0;
+	/* This should always be on the opposite edge as statdrv */
+	spxx_clk_ctl.s.statrcv = 1;
+	spxx_clk_ctl.s.sndtrn = 0;
+	spxx_clk_ctl.s.drptrn = 0;
+	spxx_clk_ctl.s.rcvtrn = 0;
+	spxx_clk_ctl.s.srxdlck = 0;
+	cvmx_write_csr(CVMX_SPXX_CLK_CTL(interface), spxx_clk_ctl.u64);
+	cvmx_wait(100 * MS);
+
+	/* Reset SRX0 DLL */
+	spxx_clk_ctl.s.srxdlck = 1;
+	cvmx_write_csr(CVMX_SPXX_CLK_CTL(interface), spxx_clk_ctl.u64);
+
+	/* Waiting for Inf0 Spi4 RX DLL to lock */
+	cvmx_wait(100 * MS);
+
+	/* Enable dynamic alignment */
+	spxx_trn4_ctl.s.trntest = 0;
+	spxx_trn4_ctl.s.jitter = 1;
+	spxx_trn4_ctl.s.clr_boot = 1;
+	spxx_trn4_ctl.s.set_boot = 0;
+	if (OCTEON_IS_MODEL(OCTEON_CN58XX))
+		spxx_trn4_ctl.s.maxdist = 3;
+	else
+		spxx_trn4_ctl.s.maxdist = 8;
+	spxx_trn4_ctl.s.macro_en = 1;
+	spxx_trn4_ctl.s.mux_en = 1;
+	cvmx_write_csr(CVMX_SPXX_TRN4_CTL(interface), spxx_trn4_ctl.u64);
+
+	spxx_dbg_deskew_ctl.u64 = 0;
+	cvmx_write_csr(CVMX_SPXX_DBG_DESKEW_CTL(interface),
+		       spxx_dbg_deskew_ctl.u64);
+
+	return 0;
+}
+
+/**
+ * Callback to setup calendar and miscellaneous settings before clock detection
+ *
+ * @interface: The identifier of the packet interface to configure and
+ *		    use as a SPI interface.
+ * @mode:      The operating mode for the SPI interface. The interface
+ *		    can operate as a full duplex (both Tx and Rx data paths
+ *		    active) or as a halfplex (either the Tx data path is
+ *		    active or the Rx data path is active, but not both).
+ * @num_ports: Number of ports to configure on SPI
+ *
+ * Returns Zero on success, non-zero error code on failure (will cause
+ * SPI initialization to abort)
+ */
+int cvmx_spi_calendar_setup_cb(int interface, cvmx_spi_mode_t mode,
+			       int num_ports)
+{
+	int port;
+	int index;
+	if (mode & CVMX_SPI_MODE_RX_HALFPLEX) {
+		union cvmx_srxx_com_ctl srxx_com_ctl;
+		union cvmx_srxx_spi4_stat srxx_spi4_stat;
+
+		/* SRX0 number of Ports */
+		srxx_com_ctl.u64 = 0;
+		srxx_com_ctl.s.prts = num_ports - 1;
+		srxx_com_ctl.s.st_en = 0;
+		srxx_com_ctl.s.inf_en = 0;
+		cvmx_write_csr(CVMX_SRXX_COM_CTL(interface), srxx_com_ctl.u64);
+
+		/* SRX0 Calendar Table. This round robbins through all ports */
+		port = 0;
+		index = 0;
+		while (port < num_ports) {
+			union cvmx_srxx_spi4_calx srxx_spi4_calx;
+			srxx_spi4_calx.u64 = 0;
+			srxx_spi4_calx.s.prt0 = port++;
+			srxx_spi4_calx.s.prt1 = port++;
+			srxx_spi4_calx.s.prt2 = port++;
+			srxx_spi4_calx.s.prt3 = port++;
+			srxx_spi4_calx.s.oddpar =
+			    ~(cvmx_dpop(srxx_spi4_calx.u64) & 1);
+			cvmx_write_csr(CVMX_SRXX_SPI4_CALX(index, interface),
+				       srxx_spi4_calx.u64);
+			index++;
+		}
+		srxx_spi4_stat.u64 = 0;
+		srxx_spi4_stat.s.len = num_ports;
+		srxx_spi4_stat.s.m = 1;
+		cvmx_write_csr(CVMX_SRXX_SPI4_STAT(interface),
+			       srxx_spi4_stat.u64);
+	}
+
+	if (mode & CVMX_SPI_MODE_TX_HALFPLEX) {
+		union cvmx_stxx_arb_ctl stxx_arb_ctl;
+		union cvmx_gmxx_tx_spi_max gmxx_tx_spi_max;
+		union cvmx_gmxx_tx_spi_thresh gmxx_tx_spi_thresh;
+		union cvmx_gmxx_tx_spi_ctl gmxx_tx_spi_ctl;
+		union cvmx_stxx_spi4_stat stxx_spi4_stat;
+		union cvmx_stxx_spi4_dat stxx_spi4_dat;
+
+		/* STX0 Config */
+		stxx_arb_ctl.u64 = 0;
+		stxx_arb_ctl.s.igntpa = 0;
+		stxx_arb_ctl.s.mintrn = 0;
+		cvmx_write_csr(CVMX_STXX_ARB_CTL(interface), stxx_arb_ctl.u64);
+
+		gmxx_tx_spi_max.u64 = 0;
+		gmxx_tx_spi_max.s.max1 = 8;
+		gmxx_tx_spi_max.s.max2 = 4;
+		gmxx_tx_spi_max.s.slice = 0;
+		cvmx_write_csr(CVMX_GMXX_TX_SPI_MAX(interface),
+			       gmxx_tx_spi_max.u64);
+
+		gmxx_tx_spi_thresh.u64 = 0;
+		gmxx_tx_spi_thresh.s.thresh = 4;
+		cvmx_write_csr(CVMX_GMXX_TX_SPI_THRESH(interface),
+			       gmxx_tx_spi_thresh.u64);
+
+		gmxx_tx_spi_ctl.u64 = 0;
+		gmxx_tx_spi_ctl.s.tpa_clr = 0;
+		gmxx_tx_spi_ctl.s.cont_pkt = 0;
+		cvmx_write_csr(CVMX_GMXX_TX_SPI_CTL(interface),
+			       gmxx_tx_spi_ctl.u64);
+
+		/* STX0 Training Control */
+		stxx_spi4_dat.u64 = 0;
+		/*Minimum needed by dynamic alignment */
+		stxx_spi4_dat.s.alpha = 32;
+		stxx_spi4_dat.s.max_t = 0xFFFF; /*Minimum interval is 0x20 */
+		cvmx_write_csr(CVMX_STXX_SPI4_DAT(interface),
+			       stxx_spi4_dat.u64);
+
+		/* STX0 Calendar Table. This round robbins through all ports */
+		port = 0;
+		index = 0;
+		while (port < num_ports) {
+			union cvmx_stxx_spi4_calx stxx_spi4_calx;
+			stxx_spi4_calx.u64 = 0;
+			stxx_spi4_calx.s.prt0 = port++;
+			stxx_spi4_calx.s.prt1 = port++;
+			stxx_spi4_calx.s.prt2 = port++;
+			stxx_spi4_calx.s.prt3 = port++;
+			stxx_spi4_calx.s.oddpar =
+			    ~(cvmx_dpop(stxx_spi4_calx.u64) & 1);
+			cvmx_write_csr(CVMX_STXX_SPI4_CALX(index, interface),
+				       stxx_spi4_calx.u64);
+			index++;
+		}
+		stxx_spi4_stat.u64 = 0;
+		stxx_spi4_stat.s.len = num_ports;
+		stxx_spi4_stat.s.m = 1;
+		cvmx_write_csr(CVMX_STXX_SPI4_STAT(interface),
+			       stxx_spi4_stat.u64);
+	}
+
+	return 0;
+}
+
+/**
+ * Callback to perform clock detection
+ *
+ * @interface: The identifier of the packet interface to configure and
+ *		    use as a SPI interface.
+ * @mode:      The operating mode for the SPI interface. The interface
+ *		    can operate as a full duplex (both Tx and Rx data paths
+ *		    active) or as a halfplex (either the Tx data path is
+ *		    active or the Rx data path is active, but not both).
+ * @timeout:   Timeout to wait for clock synchronization in seconds
+ *
+ * Returns Zero on success, non-zero error code on failure (will cause
+ * SPI initialization to abort)
+ */
+int cvmx_spi_clock_detect_cb(int interface, cvmx_spi_mode_t mode, int timeout)
+{
+	int clock_transitions;
+	union cvmx_spxx_clk_stat stat;
+	uint64_t timeout_time;
+	uint64_t MS = cvmx_sysinfo_get()->cpu_clock_hz / 1000;
+
+	/*
+	 * Regardless of operating mode, both Tx and Rx clocks must be
+	 * present for the SPI interface to operate.
+	 */
+	cvmx_dprintf("SPI%d: Waiting to see TsClk...\n", interface);
+	timeout_time = cvmx_get_cycle() + 1000ull * MS * timeout;
+	/*
+	 * Require 100 clock transitions in order to avoid any noise
+	 * in the beginning.
+	 */
+	clock_transitions = 100;
+	do {
+		stat.u64 = cvmx_read_csr(CVMX_SPXX_CLK_STAT(interface));
+		if (stat.s.s4clk0 && stat.s.s4clk1 && clock_transitions) {
+			/*
+			 * We've seen a clock transition, so decrement
+			 * the number we still need.
+			 */
+			clock_transitions--;
+			cvmx_write_csr(CVMX_SPXX_CLK_STAT(interface), stat.u64);
+			stat.s.s4clk0 = 0;
+			stat.s.s4clk1 = 0;
+		}
+		if (cvmx_get_cycle() > timeout_time) {
+			cvmx_dprintf("SPI%d: Timeout\n", interface);
+			return -1;
+		}
+	} while (stat.s.s4clk0 == 0 || stat.s.s4clk1 == 0);
+
+	cvmx_dprintf("SPI%d: Waiting to see RsClk...\n", interface);
+	timeout_time = cvmx_get_cycle() + 1000ull * MS * timeout;
+	/*
+	 * Require 100 clock transitions in order to avoid any noise in the
+	 * beginning.
+	 */
+	clock_transitions = 100;
+	do {
+		stat.u64 = cvmx_read_csr(CVMX_SPXX_CLK_STAT(interface));
+		if (stat.s.d4clk0 && stat.s.d4clk1 && clock_transitions) {
+			/*
+			 * We've seen a clock transition, so decrement
+			 * the number we still need
+			 */
+			clock_transitions--;
+			cvmx_write_csr(CVMX_SPXX_CLK_STAT(interface), stat.u64);
+			stat.s.d4clk0 = 0;
+			stat.s.d4clk1 = 0;
+		}
+		if (cvmx_get_cycle() > timeout_time) {
+			cvmx_dprintf("SPI%d: Timeout\n", interface);
+			return -1;
+		}
+	} while (stat.s.d4clk0 == 0 || stat.s.d4clk1 == 0);
+
+	return 0;
+}
+
+/**
+ * Callback to perform link training
+ *
+ * @interface: The identifier of the packet interface to configure and
+ *		    use as a SPI interface.
+ * @mode:      The operating mode for the SPI interface. The interface
+ *		    can operate as a full duplex (both Tx and Rx data paths
+ *		    active) or as a halfplex (either the Tx data path is
+ *		    active or the Rx data path is active, but not both).
+ * @timeout:   Timeout to wait for link to be trained (in seconds)
+ *
+ * Returns Zero on success, non-zero error code on failure (will cause
+ * SPI initialization to abort)
+ */
+int cvmx_spi_training_cb(int interface, cvmx_spi_mode_t mode, int timeout)
+{
+	union cvmx_spxx_trn4_ctl spxx_trn4_ctl;
+	union cvmx_spxx_clk_stat stat;
+	uint64_t MS = cvmx_sysinfo_get()->cpu_clock_hz / 1000;
+	uint64_t timeout_time = cvmx_get_cycle() + 1000ull * MS * timeout;
+	int rx_training_needed;
+
+	/* SRX0 & STX0 Inf0 Links are configured - begin training */
+	union cvmx_spxx_clk_ctl spxx_clk_ctl;
+	spxx_clk_ctl.u64 = 0;
+	spxx_clk_ctl.s.seetrn = 0;
+	spxx_clk_ctl.s.clkdly = 0x10;
+	spxx_clk_ctl.s.runbist = 0;
+	spxx_clk_ctl.s.statdrv = 0;
+	/* This should always be on the opposite edge as statdrv */
+	spxx_clk_ctl.s.statrcv = 1;
+	spxx_clk_ctl.s.sndtrn = 1;
+	spxx_clk_ctl.s.drptrn = 1;
+	spxx_clk_ctl.s.rcvtrn = 1;
+	spxx_clk_ctl.s.srxdlck = 1;
+	cvmx_write_csr(CVMX_SPXX_CLK_CTL(interface), spxx_clk_ctl.u64);
+	cvmx_wait(1000 * MS);
+
+	/* SRX0 clear the boot bit */
+	spxx_trn4_ctl.u64 = cvmx_read_csr(CVMX_SPXX_TRN4_CTL(interface));
+	spxx_trn4_ctl.s.clr_boot = 1;
+	cvmx_write_csr(CVMX_SPXX_TRN4_CTL(interface), spxx_trn4_ctl.u64);
+
+	/* Wait for the training sequence to complete */
+	cvmx_dprintf("SPI%d: Waiting for training\n", interface);
+	cvmx_wait(1000 * MS);
+	/* Wait a really long time here */
+	timeout_time = cvmx_get_cycle() + 1000ull * MS * 600;
+	/*
+	 * The HRM says we must wait for 34 + 16 * MAXDIST training sequences.
+	 * We'll be pessimistic and wait for a lot more.
+	 */
+	rx_training_needed = 500;
+	do {
+		stat.u64 = cvmx_read_csr(CVMX_SPXX_CLK_STAT(interface));
+		if (stat.s.srxtrn && rx_training_needed) {
+			rx_training_needed--;
+			cvmx_write_csr(CVMX_SPXX_CLK_STAT(interface), stat.u64);
+			stat.s.srxtrn = 0;
+		}
+		if (cvmx_get_cycle() > timeout_time) {
+			cvmx_dprintf("SPI%d: Timeout\n", interface);
+			return -1;
+		}
+	} while (stat.s.srxtrn == 0);
+
+	return 0;
+}
+
+/**
+ * Callback to perform calendar data synchronization
+ *
+ * @interface: The identifier of the packet interface to configure and
+ *		    use as a SPI interface.
+ * @mode:      The operating mode for the SPI interface. The interface
+ *		    can operate as a full duplex (both Tx and Rx data paths
+ *		    active) or as a halfplex (either the Tx data path is
+ *		    active or the Rx data path is active, but not both).
+ * @timeout:   Timeout to wait for calendar data in seconds
+ *
+ * Returns Zero on success, non-zero error code on failure (will cause
+ * SPI initialization to abort)
+ */
+int cvmx_spi_calendar_sync_cb(int interface, cvmx_spi_mode_t mode, int timeout)
+{
+	uint64_t MS = cvmx_sysinfo_get()->cpu_clock_hz / 1000;
+	if (mode & CVMX_SPI_MODE_RX_HALFPLEX) {
+		/* SRX0 interface should be good, send calendar data */
+		union cvmx_srxx_com_ctl srxx_com_ctl;
+		cvmx_dprintf
+		    ("SPI%d: Rx is synchronized, start sending calendar data\n",
+		     interface);
+		srxx_com_ctl.u64 = cvmx_read_csr(CVMX_SRXX_COM_CTL(interface));
+		srxx_com_ctl.s.inf_en = 1;
+		srxx_com_ctl.s.st_en = 1;
+		cvmx_write_csr(CVMX_SRXX_COM_CTL(interface), srxx_com_ctl.u64);
+	}
+
+	if (mode & CVMX_SPI_MODE_TX_HALFPLEX) {
+		/* STX0 has achieved sync */
+		/* The corespondant board should be sending calendar data */
+		/* Enable the STX0 STAT receiver. */
+		union cvmx_spxx_clk_stat stat;
+		uint64_t timeout_time;
+		union cvmx_stxx_com_ctl stxx_com_ctl;
+		stxx_com_ctl.u64 = 0;
+		stxx_com_ctl.s.st_en = 1;
+		cvmx_write_csr(CVMX_STXX_COM_CTL(interface), stxx_com_ctl.u64);
+
+		/* Waiting for calendar sync on STX0 STAT */
+		cvmx_dprintf("SPI%d: Waiting to sync on STX[%d] STAT\n",
+			     interface, interface);
+		timeout_time = cvmx_get_cycle() + 1000ull * MS * timeout;
+		/* SPX0_CLK_STAT - SPX0_CLK_STAT[STXCAL] should be 1 (bit10) */
+		do {
+			stat.u64 = cvmx_read_csr(CVMX_SPXX_CLK_STAT(interface));
+			if (cvmx_get_cycle() > timeout_time) {
+				cvmx_dprintf("SPI%d: Timeout\n", interface);
+				return -1;
+			}
+		} while (stat.s.stxcal == 0);
+	}
+
+	return 0;
+}
+
+/**
+ * Callback to handle interface up
+ *
+ * @interface: The identifier of the packet interface to configure and
+ *		    use as a SPI interface.
+ * @mode:      The operating mode for the SPI interface. The interface
+ *		    can operate as a full duplex (both Tx and Rx data paths
+ *		    active) or as a halfplex (either the Tx data path is
+ *		    active or the Rx data path is active, but not both).
+ *
+ * Returns Zero on success, non-zero error code on failure (will cause
+ * SPI initialization to abort)
+ */
+int cvmx_spi_interface_up_cb(int interface, cvmx_spi_mode_t mode)
+{
+	union cvmx_gmxx_rxx_frm_min gmxx_rxx_frm_min;
+	union cvmx_gmxx_rxx_frm_max gmxx_rxx_frm_max;
+	union cvmx_gmxx_rxx_jabber gmxx_rxx_jabber;
+
+	if (mode & CVMX_SPI_MODE_RX_HALFPLEX) {
+		union cvmx_srxx_com_ctl srxx_com_ctl;
+		srxx_com_ctl.u64 = cvmx_read_csr(CVMX_SRXX_COM_CTL(interface));
+		srxx_com_ctl.s.inf_en = 1;
+		cvmx_write_csr(CVMX_SRXX_COM_CTL(interface), srxx_com_ctl.u64);
+		cvmx_dprintf("SPI%d: Rx is now up\n", interface);
+	}
+
+	if (mode & CVMX_SPI_MODE_TX_HALFPLEX) {
+		union cvmx_stxx_com_ctl stxx_com_ctl;
+		stxx_com_ctl.u64 = cvmx_read_csr(CVMX_STXX_COM_CTL(interface));
+		stxx_com_ctl.s.inf_en = 1;
+		cvmx_write_csr(CVMX_STXX_COM_CTL(interface), stxx_com_ctl.u64);
+		cvmx_dprintf("SPI%d: Tx is now up\n", interface);
+	}
+
+	gmxx_rxx_frm_min.u64 = 0;
+	gmxx_rxx_frm_min.s.len = 64;
+	cvmx_write_csr(CVMX_GMXX_RXX_FRM_MIN(0, interface),
+		       gmxx_rxx_frm_min.u64);
+	gmxx_rxx_frm_max.u64 = 0;
+	gmxx_rxx_frm_max.s.len = 64 * 1024 - 4;
+	cvmx_write_csr(CVMX_GMXX_RXX_FRM_MAX(0, interface),
+		       gmxx_rxx_frm_max.u64);
+	gmxx_rxx_jabber.u64 = 0;
+	gmxx_rxx_jabber.s.cnt = 64 * 1024 - 4;
+	cvmx_write_csr(CVMX_GMXX_RXX_JABBER(0, interface), gmxx_rxx_jabber.u64);
+
+	return 0;
+}

arch/mips/cavium-octeon/executive/cvmx-sysinfo.c

@@ -0,0 +1,117 @@
+/***********************license start***************
+ * Author: Cavium Networks
+ *
+ * Contact: support@caviumnetworks.com
+ * This file is part of the OCTEON SDK
+ *
+ * Copyright (c) 2003-2008 Cavium Networks
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, Version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This file is distributed in the hope that it will be useful, but
+ * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
+ * NONINFRINGEMENT.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this file; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * or visit http://www.gnu.org/licenses/.
+ *
+ * This file may also be available under a different license from Cavium.
+ * Contact Cavium Networks for more information
+ ***********************license end**************************************/
+
+/*
+ * This module provides system/board/application information obtained
+ * by the bootloader.
+ */
+#include <linux/module.h>
+
+#include <asm/octeon/cvmx.h>
+#include <asm/octeon/cvmx-spinlock.h>
+#include <asm/octeon/cvmx-sysinfo.h>
+
+/**
+ * This structure defines the private state maintained by sysinfo module.
+ *
+ */
+static struct {
+	struct cvmx_sysinfo sysinfo;	   /* system information */
+	cvmx_spinlock_t lock;	   /* mutex spinlock */
+
+} state = {
+	.lock = CVMX_SPINLOCK_UNLOCKED_INITIALIZER
+};
+
+
+/*
+ * Global variables that define the min/max of the memory region set
+ * up for 32 bit userspace access.
+ */
+uint64_t linux_mem32_min;
+uint64_t linux_mem32_max;
+uint64_t linux_mem32_wired;
+uint64_t linux_mem32_offset;
+
+/**
+ * This function returns the application information as obtained
+ * by the bootloader.  This provides the core mask of the cores
+ * running the same application image, as well as the physical
+ * memory regions available to the core.
+ *
+ * Returns  Pointer to the boot information structure
+ *
+ */
+struct cvmx_sysinfo *cvmx_sysinfo_get(void)
+{
+	return &(state.sysinfo);
+}
+EXPORT_SYMBOL(cvmx_sysinfo_get);
+
+/**
+ * This function is used in non-simple executive environments (such as
+ * Linux kernel, u-boot, etc.)	to configure the minimal fields that
+ * are required to use simple executive files directly.
+ *
+ * Locking (if required) must be handled outside of this
+ * function
+ *
+ * @phy_mem_desc_ptr:
+ *		     Pointer to global physical memory descriptor
+ *		     (bootmem descriptor) @board_type: Octeon board
+ *		     type enumeration
+ *
+ * @board_rev_major:
+ *		     Board major revision
+ * @board_rev_minor:
+ *		     Board minor revision
+ * @cpu_clock_hz:
+ *		     CPU clock freqency in hertz
+ *
+ * Returns 0: Failure
+ *	   1: success
+ */
+int cvmx_sysinfo_minimal_initialize(void *phy_mem_desc_ptr,
+				    uint16_t board_type,
+				    uint8_t board_rev_major,
+				    uint8_t board_rev_minor,
+				    uint32_t cpu_clock_hz)
+{
+
+	/* The sysinfo structure was already initialized */
+	if (state.sysinfo.board_type)
+		return 0;
+
+	memset(&(state.sysinfo), 0x0, sizeof(state.sysinfo));
+	state.sysinfo.phy_mem_desc_ptr = phy_mem_desc_ptr;
+	state.sysinfo.board_type = board_type;
+	state.sysinfo.board_rev_major = board_rev_major;
+	state.sysinfo.board_rev_minor = board_rev_minor;
+	state.sysinfo.cpu_clock_hz = cpu_clock_hz;
+
+	return 1;
+}

arch/mips/cavium-octeon/executive/octeon-model.c

@@ -0,0 +1,409 @@
+/***********************license start***************
+ * Author: Cavium Networks
+ *
+ * Contact: support@caviumnetworks.com
+ * This file is part of the OCTEON SDK
+ *
+ * Copyright (c) 2003-2010 Cavium Networks
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, Version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This file is distributed in the hope that it will be useful, but
+ * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
+ * NONINFRINGEMENT.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this file; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * or visit http://www.gnu.org/licenses/.
+ *
+ * This file may also be available under a different license from Cavium.
+ * Contact Cavium Networks for more information
+ ***********************license end**************************************/
+
+#include <asm/octeon/octeon.h>
+
+/**
+ * Given the chip processor ID from COP0, this function returns a
+ * string representing the chip model number. The string is of the
+ * form CNXXXXpX.X-FREQ-SUFFIX.
+ * - XXXX = The chip model number
+ * - X.X = Chip pass number
+ * - FREQ = Current frequency in Mhz
+ * - SUFFIX = NSP, EXP, SCP, SSP, or CP
+ *
+ * @chip_id: Chip ID
+ *
+ * Returns Model string
+ */
+const char *octeon_model_get_string(uint32_t chip_id)
+{
+	static char buffer[32];
+	return octeon_model_get_string_buffer(chip_id, buffer);
+}
+
+/*
+ * Version of octeon_model_get_string() that takes buffer as argument,
+ * as running early in u-boot static/global variables don't work when
+ * running from flash.
+ */
+const char *octeon_model_get_string_buffer(uint32_t chip_id, char *buffer)
+{
+	const char *family;
+	const char *core_model;
+	char pass[4];
+	int clock_mhz;
+	const char *suffix;
+	union cvmx_l2d_fus3 fus3;
+	int num_cores;
+	union cvmx_mio_fus_dat2 fus_dat2;
+	union cvmx_mio_fus_dat3 fus_dat3;
+	char fuse_model[10];
+	uint32_t fuse_data = 0;
+
+	fus3.u64 = 0;
+	if (!OCTEON_IS_MODEL(OCTEON_CN6XXX))
+		fus3.u64 = cvmx_read_csr(CVMX_L2D_FUS3);
+	fus_dat2.u64 = cvmx_read_csr(CVMX_MIO_FUS_DAT2);
+	fus_dat3.u64 = cvmx_read_csr(CVMX_MIO_FUS_DAT3);
+	num_cores = cvmx_pop(cvmx_read_csr(CVMX_CIU_FUSE));
+
+	/* Make sure the non existent devices look disabled */
+	switch ((chip_id >> 8) & 0xff) {
+	case 6:		/* CN50XX */
+	case 2:		/* CN30XX */
+		fus_dat3.s.nodfa_dte = 1;
+		fus_dat3.s.nozip = 1;
+		break;
+	case 4:		/* CN57XX or CN56XX */
+		fus_dat3.s.nodfa_dte = 1;
+		break;
+	default:
+		break;
+	}
+
+	/* Make a guess at the suffix */
+	/* NSP = everything */
+	/* EXP = No crypto */
+	/* SCP = No DFA, No zip */
+	/* CP = No DFA, No crypto, No zip */
+	if (fus_dat3.s.nodfa_dte) {
+		if (fus_dat2.s.nocrypto)
+			suffix = "CP";
+		else
+			suffix = "SCP";
+	} else if (fus_dat2.s.nocrypto)
+		suffix = "EXP";
+	else
+		suffix = "NSP";
+
+	/*
+	 * Assume pass number is encoded using <5:3><2:0>. Exceptions
+	 * will be fixed later.
+	 */
+	sprintf(pass, "%d.%d", (int)((chip_id >> 3) & 7) + 1, (int)chip_id & 7);
+
+	/*
+	 * Use the number of cores to determine the last 2 digits of
+	 * the model number. There are some exceptions that are fixed
+	 * later.
+	 */
+	switch (num_cores) {
+	case 32:
+		core_model = "80";
+		break;
+	case 24:
+		core_model = "70";
+		break;
+	case 16:
+		core_model = "60";
+		break;
+	case 15:
+		core_model = "58";
+		break;
+	case 14:
+		core_model = "55";
+		break;
+	case 13:
+		core_model = "52";
+		break;
+	case 12:
+		core_model = "50";
+		break;
+	case 11:
+		core_model = "48";
+		break;
+	case 10:
+		core_model = "45";
+		break;
+	case 9:
+		core_model = "42";
+		break;
+	case 8:
+		core_model = "40";
+		break;
+	case 7:
+		core_model = "38";
+		break;
+	case 6:
+		core_model = "34";
+		break;
+	case 5:
+		core_model = "32";
+		break;
+	case 4:
+		core_model = "30";
+		break;
+	case 3:
+		core_model = "25";
+		break;
+	case 2:
+		core_model = "20";
+		break;
+	case 1:
+		core_model = "10";
+		break;
+	default:
+		core_model = "XX";
+		break;
+	}
+
+	/* Now figure out the family, the first two digits */
+	switch ((chip_id >> 8) & 0xff) {
+	case 0:		/* CN38XX, CN37XX or CN36XX */
+		if (fus3.cn38xx.crip_512k) {
+			/*
+			 * For some unknown reason, the 16 core one is
+			 * called 37 instead of 36.
+			 */
+			if (num_cores >= 16)
+				family = "37";
+			else
+				family = "36";
+		} else
+			family = "38";
+		/*
+		 * This series of chips didn't follow the standard
+		 * pass numbering.
+		 */
+		switch (chip_id & 0xf) {
+		case 0:
+			strcpy(pass, "1.X");
+			break;
+		case 1:
+			strcpy(pass, "2.X");
+			break;
+		case 3:
+			strcpy(pass, "3.X");
+			break;
+		default:
+			strcpy(pass, "X.X");
+			break;
+		}
+		break;
+	case 1:		/* CN31XX or CN3020 */
+		if ((chip_id & 0x10) || fus3.cn31xx.crip_128k)
+			family = "30";
+		else
+			family = "31";
+		/*
+		 * This series of chips didn't follow the standard
+		 * pass numbering.
+		 */
+		switch (chip_id & 0xf) {
+		case 0:
+			strcpy(pass, "1.0");
+			break;
+		case 2:
+			strcpy(pass, "1.1");
+			break;
+		default:
+			strcpy(pass, "X.X");
+			break;
+		}
+		break;
+	case 2:		/* CN3010 or CN3005 */
+		family = "30";
+		/* A chip with half cache is an 05 */
+		if (fus3.cn30xx.crip_64k)
+			core_model = "05";
+		/*
+		 * This series of chips didn't follow the standard
+		 * pass numbering.
+		 */
+		switch (chip_id & 0xf) {
+		case 0:
+			strcpy(pass, "1.0");
+			break;
+		case 2:
+			strcpy(pass, "1.1");
+			break;
+		default:
+			strcpy(pass, "X.X");
+			break;
+		}
+		break;
+	case 3:		/* CN58XX */
+		family = "58";
+		/* Special case. 4 core, half cache (CP with half cache) */
+		if ((num_cores == 4) && fus3.cn58xx.crip_1024k && !strncmp(suffix, "CP", 2))
+			core_model = "29";
+
+		/* Pass 1 uses different encodings for pass numbers */
+		if ((chip_id & 0xFF) < 0x8) {
+			switch (chip_id & 0x3) {
+			case 0:
+				strcpy(pass, "1.0");
+				break;
+			case 1:
+				strcpy(pass, "1.1");
+				break;
+			case 3:
+				strcpy(pass, "1.2");
+				break;
+			default:
+				strcpy(pass, "1.X");
+				break;
+			}
+		}
+		break;
+	case 4:		/* CN57XX, CN56XX, CN55XX, CN54XX */
+		if (fus_dat2.cn56xx.raid_en) {
+			if (fus3.cn56xx.crip_1024k)
+				family = "55";
+			else
+				family = "57";
+			if (fus_dat2.cn56xx.nocrypto)
+				suffix = "SP";
+			else
+				suffix = "SSP";
+		} else {
+			if (fus_dat2.cn56xx.nocrypto)
+				suffix = "CP";
+			else {
+				suffix = "NSP";
+				if (fus_dat3.s.nozip)
+					suffix = "SCP";
+
+				if (fus_dat3.s.bar2_en)
+					suffix = "NSPB2";
+			}
+			if (fus3.cn56xx.crip_1024k)
+				family = "54";
+			else
+				family = "56";
+		}
+		break;
+	case 6:		/* CN50XX */
+		family = "50";
+		break;
+	case 7:		/* CN52XX */
+		if (fus3.cn52xx.crip_256k)
+			family = "51";
+		else
+			family = "52";
+		break;
+	case 0x93:		/* CN61XX */
+		family = "61";
+		if (fus_dat2.cn61xx.nocrypto && fus_dat2.cn61xx.dorm_crypto)
+			suffix = "AP";
+		if (fus_dat2.cn61xx.nocrypto)
+			suffix = "CP";
+		else if (fus_dat2.cn61xx.dorm_crypto)
+			suffix = "DAP";
+		else if (fus_dat3.cn61xx.nozip)
+			suffix = "SCP";
+		break;
+	case 0x90:		/* CN63XX */
+		family = "63";
+		if (fus_dat3.s.l2c_crip == 2)
+			family = "62";
+		if (num_cores == 6)	/* Other core counts match generic */
+			core_model = "35";
+		if (fus_dat2.cn63xx.nocrypto)
+			suffix = "CP";
+		else if (fus_dat2.cn63xx.dorm_crypto)
+			suffix = "DAP";
+		else if (fus_dat3.cn63xx.nozip)
+			suffix = "SCP";
+		else
+			suffix = "AAP";
+		break;
+	case 0x92:		/* CN66XX */
+		family = "66";
+		if (num_cores == 6)	/* Other core counts match generic */
+			core_model = "35";
+		if (fus_dat2.cn66xx.nocrypto && fus_dat2.cn66xx.dorm_crypto)
+			suffix = "AP";
+		if (fus_dat2.cn66xx.nocrypto)
+			suffix = "CP";
+		else if (fus_dat2.cn66xx.dorm_crypto)
+			suffix = "DAP";
+		else if (fus_dat3.cn66xx.nozip)
+			suffix = "SCP";
+		else
+			suffix = "AAP";
+		break;
+	case 0x91:		/* CN68XX */
+		family = "68";
+		if (fus_dat2.cn68xx.nocrypto && fus_dat3.cn68xx.nozip)
+			suffix = "CP";
+		else if (fus_dat2.cn68xx.dorm_crypto)
+			suffix = "DAP";
+		else if (fus_dat3.cn68xx.nozip)
+			suffix = "SCP";
+		else if (fus_dat2.cn68xx.nocrypto)
+			suffix = "SP";
+		else
+			suffix = "AAP";
+		break;
+	default:
+		family = "XX";
+		core_model = "XX";
+		strcpy(pass, "X.X");
+		suffix = "XXX";
+		break;
+	}
+
+	clock_mhz = octeon_get_clock_rate() / 1000000;
+	if (family[0] != '3') {
+		int fuse_base = 384 / 8;
+		if (family[0] == '6')
+			fuse_base = 832 / 8;
+
+		/* Check for model in fuses, overrides normal decode */
+		/* This is _not_ valid for Octeon CN3XXX models */
+		fuse_data |= cvmx_fuse_read_byte(fuse_base + 3);
+		fuse_data = fuse_data << 8;
+		fuse_data |= cvmx_fuse_read_byte(fuse_base + 2);
+		fuse_data = fuse_data << 8;
+		fuse_data |= cvmx_fuse_read_byte(fuse_base + 1);
+		fuse_data = fuse_data << 8;
+		fuse_data |= cvmx_fuse_read_byte(fuse_base);
+		if (fuse_data & 0x7ffff) {
+			int model = fuse_data & 0x3fff;
+			int suffix = (fuse_data >> 14) & 0x1f;
+			if (suffix && model) {
+				/* Have both number and suffix in fuses, so both */
+				sprintf(fuse_model, "%d%c", model, 'A' + suffix - 1);
+				core_model = "";
+				family = fuse_model;
+			} else if (suffix && !model) {
+				/* Only have suffix, so add suffix to 'normal' model number */
+				sprintf(fuse_model, "%s%c", core_model, 'A' + suffix - 1);
+				core_model = fuse_model;
+			} else {
+				/* Don't have suffix, so just use model from fuses */
+				sprintf(fuse_model, "%d", model);
+				core_model = "";
+				family = fuse_model;
+			}
+		}
+	}
+	sprintf(buffer, "CN%s%sp%s-%d-%s", family, core_model, pass, clock_mhz, suffix);
+	return buffer;
+}