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Fixed MTP to work with TWRP

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awab228 2018-06-19 23:16:04 +02:00
commit f6dfaef42e
50820 changed files with 20846062 additions and 0 deletions
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33
arch/tile/gxio/Kconfig Normal file
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# Support direct access to TILE-Gx hardware from user space, via the
# gxio library, or from kernel space, via kernel IORPC support.
config TILE_GXIO
bool
depends on TILEGX
# Support direct access to the common I/O DMA facility within the
# TILE-Gx mPIPE and Trio hardware from kernel space.
config TILE_GXIO_DMA
bool
select TILE_GXIO
# Support direct access to the TILE-Gx mPIPE hardware from kernel space.
config TILE_GXIO_MPIPE
bool
select TILE_GXIO
select TILE_GXIO_DMA
# Support direct access to the TILE-Gx TRIO hardware from kernel space.
config TILE_GXIO_TRIO
bool
select TILE_GXIO
select TILE_GXIO_DMA
# Support direct access to the TILE-Gx USB hardware from kernel space.
config TILE_GXIO_USB_HOST
bool
select TILE_GXIO
# Support direct access to the TILE-Gx UART hardware from kernel space.
config TILE_GXIO_UART
bool
select TILE_GXIO

10
arch/tile/gxio/Makefile Normal file
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#
# Makefile for the Tile-Gx device access support.
#
obj-$(CONFIG_TILE_GXIO) += iorpc_globals.o kiorpc.o
obj-$(CONFIG_TILE_GXIO_DMA) += dma_queue.o
obj-$(CONFIG_TILE_GXIO_MPIPE) += mpipe.o iorpc_mpipe.o iorpc_mpipe_info.o
obj-$(CONFIG_TILE_GXIO_TRIO) += trio.o iorpc_trio.o
obj-$(CONFIG_TILE_GXIO_UART) += uart.o iorpc_uart.o
obj-$(CONFIG_TILE_GXIO_USB_HOST) += usb_host.o iorpc_usb_host.o

176
arch/tile/gxio/dma_queue.c Normal file
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/*
* Copyright 2012 Tilera Corporation. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, version 2.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
* NON INFRINGEMENT. See the GNU General Public License for
* more details.
*/
#include <linux/io.h>
#include <linux/atomic.h>
#include <linux/module.h>
#include <gxio/dma_queue.h>
/* Wait for a memory read to complete. */
#define wait_for_value(val) \
__asm__ __volatile__("move %0, %0" :: "r"(val))
/* The index is in the low 16. */
#define DMA_QUEUE_INDEX_MASK ((1 << 16) - 1)
/*
* The hardware descriptor-ring type.
* This matches the types used by mpipe (MPIPE_EDMA_POST_REGION_VAL_t)
* and trio (TRIO_PUSH_DMA_REGION_VAL_t or TRIO_PULL_DMA_REGION_VAL_t).
* See those types for more documentation on the individual fields.
*/
typedef union {
struct {
#ifndef __BIG_ENDIAN__
uint64_t ring_idx:16;
uint64_t count:16;
uint64_t gen:1;
uint64_t __reserved:31;
#else
uint64_t __reserved:31;
uint64_t gen:1;
uint64_t count:16;
uint64_t ring_idx:16;
#endif
};
uint64_t word;
} __gxio_ring_t;
void __gxio_dma_queue_init(__gxio_dma_queue_t *dma_queue,
void *post_region_addr, unsigned int num_entries)
{
/*
* Limit 65536 entry rings to 65535 credits because we only have a
* 16 bit completion counter.
*/
int64_t credits = (num_entries < 65536) ? num_entries : 65535;
memset(dma_queue, 0, sizeof(*dma_queue));
dma_queue->post_region_addr = post_region_addr;
dma_queue->hw_complete_count = 0;
dma_queue->credits_and_next_index = credits << DMA_QUEUE_CREDIT_SHIFT;
}
EXPORT_SYMBOL_GPL(__gxio_dma_queue_init);
void __gxio_dma_queue_update_credits(__gxio_dma_queue_t *dma_queue)
{
__gxio_ring_t val;
uint64_t count;
uint64_t delta;
uint64_t new_count;
/*
* Read the 64-bit completion count without touching the cache, so
* we later avoid having to evict any sharers of this cache line
* when we update it below.
*/
uint64_t orig_hw_complete_count =
cmpxchg(&dma_queue->hw_complete_count,
-1, -1);
/* Make sure the load completes before we access the hardware. */
wait_for_value(orig_hw_complete_count);
/* Read the 16-bit count of how many packets it has completed. */
val.word = __gxio_mmio_read(dma_queue->post_region_addr);
count = val.count;
/*
* Calculate the number of completions since we last updated the
* 64-bit counter. It's safe to ignore the high bits because the
* maximum credit value is 65535.
*/
delta = (count - orig_hw_complete_count) & 0xffff;
if (delta == 0)
return;
/*
* Try to write back the count, advanced by delta. If we race with
* another thread, this might fail, in which case we return
* immediately on the assumption that some credits are (or at least
* were) available.
*/
new_count = orig_hw_complete_count + delta;
if (cmpxchg(&dma_queue->hw_complete_count,
orig_hw_complete_count,
new_count) != orig_hw_complete_count)
return;
/*
* We succeeded in advancing the completion count; add back the
* corresponding number of egress credits.
*/
__insn_fetchadd(&dma_queue->credits_and_next_index,
(delta << DMA_QUEUE_CREDIT_SHIFT));
}
EXPORT_SYMBOL_GPL(__gxio_dma_queue_update_credits);
/*
* A separate 'blocked' method for put() so that backtraces and
* profiles will clearly indicate that we're wasting time spinning on
* egress availability rather than actually posting commands.
*/
int64_t __gxio_dma_queue_wait_for_credits(__gxio_dma_queue_t *dma_queue,
int64_t modifier)
{
int backoff = 16;
int64_t old;
do {
int i;
/* Back off to avoid spamming memory networks. */
for (i = backoff; i > 0; i--)
__insn_mfspr(SPR_PASS);
/* Check credits again. */
__gxio_dma_queue_update_credits(dma_queue);
old = __insn_fetchaddgez(&dma_queue->credits_and_next_index,
modifier);
/* Calculate bounded exponential backoff for next iteration. */
if (backoff < 256)
backoff *= 2;
} while (old + modifier < 0);
return old;
}
EXPORT_SYMBOL_GPL(__gxio_dma_queue_wait_for_credits);
int64_t __gxio_dma_queue_reserve_aux(__gxio_dma_queue_t *dma_queue,
unsigned int num, int wait)
{
return __gxio_dma_queue_reserve(dma_queue, num, wait != 0, true);
}
EXPORT_SYMBOL_GPL(__gxio_dma_queue_reserve_aux);
int __gxio_dma_queue_is_complete(__gxio_dma_queue_t *dma_queue,
int64_t completion_slot, int update)
{
if (update) {
if (ACCESS_ONCE(dma_queue->hw_complete_count) >
completion_slot)
return 1;
__gxio_dma_queue_update_credits(dma_queue);
}
return ACCESS_ONCE(dma_queue->hw_complete_count) > completion_slot;
}
EXPORT_SYMBOL_GPL(__gxio_dma_queue_is_complete);

89
arch/tile/gxio/iorpc_globals.c Normal file
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/*
* Copyright 2012 Tilera Corporation. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, version 2.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
* NON INFRINGEMENT. See the GNU General Public License for
* more details.
*/
/* This file is machine-generated; DO NOT EDIT! */
#include "gxio/iorpc_globals.h"
struct arm_pollfd_param {
union iorpc_pollfd pollfd;
};
int __iorpc_arm_pollfd(int fd, int pollfd_cookie)
{
struct arm_pollfd_param temp;
struct arm_pollfd_param *params = &temp;
params->pollfd.kernel.cookie = pollfd_cookie;
return hv_dev_pwrite(fd, 0, (HV_VirtAddr) params, sizeof(*params),
IORPC_OP_ARM_POLLFD);
}
EXPORT_SYMBOL(__iorpc_arm_pollfd);
struct close_pollfd_param {
union iorpc_pollfd pollfd;
};
int __iorpc_close_pollfd(int fd, int pollfd_cookie)
{
struct close_pollfd_param temp;
struct close_pollfd_param *params = &temp;
params->pollfd.kernel.cookie = pollfd_cookie;
return hv_dev_pwrite(fd, 0, (HV_VirtAddr) params, sizeof(*params),
IORPC_OP_CLOSE_POLLFD);
}
EXPORT_SYMBOL(__iorpc_close_pollfd);
struct get_mmio_base_param {
HV_PTE base;
};
int __iorpc_get_mmio_base(int fd, HV_PTE *base)
{
int __result;
struct get_mmio_base_param temp;
struct get_mmio_base_param *params = &temp;
__result =
hv_dev_pread(fd, 0, (HV_VirtAddr) params, sizeof(*params),
IORPC_OP_GET_MMIO_BASE);
*base = params->base;
return __result;
}
EXPORT_SYMBOL(__iorpc_get_mmio_base);
struct check_mmio_offset_param {
unsigned long offset;
unsigned long size;
};
int __iorpc_check_mmio_offset(int fd, unsigned long offset, unsigned long size)
{
struct check_mmio_offset_param temp;
struct check_mmio_offset_param *params = &temp;
params->offset = offset;
params->size = size;
return hv_dev_pwrite(fd, 0, (HV_VirtAddr) params, sizeof(*params),
IORPC_OP_CHECK_MMIO_OFFSET);
}
EXPORT_SYMBOL(__iorpc_check_mmio_offset);

593
arch/tile/gxio/iorpc_mpipe.c Normal file
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/*
* Copyright 2012 Tilera Corporation. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, version 2.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
* NON INFRINGEMENT. See the GNU General Public License for
* more details.
*/
/* This file is machine-generated; DO NOT EDIT! */
#include "gxio/iorpc_mpipe.h"
struct alloc_buffer_stacks_param {
unsigned int count;
unsigned int first;
unsigned int flags;
};
int gxio_mpipe_alloc_buffer_stacks(gxio_mpipe_context_t *context,
unsigned int count, unsigned int first,
unsigned int flags)
{
struct alloc_buffer_stacks_param temp;
struct alloc_buffer_stacks_param *params = &temp;
params->count = count;
params->first = first;
params->flags = flags;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params,
sizeof(*params),
GXIO_MPIPE_OP_ALLOC_BUFFER_STACKS);
}
EXPORT_SYMBOL(gxio_mpipe_alloc_buffer_stacks);
struct init_buffer_stack_aux_param {
union iorpc_mem_buffer buffer;
unsigned int stack;
unsigned int buffer_size_enum;
};
int gxio_mpipe_init_buffer_stack_aux(gxio_mpipe_context_t *context,
void *mem_va, size_t mem_size,
unsigned int mem_flags, unsigned int stack,
unsigned int buffer_size_enum)
{
int __result;
unsigned long long __cpa;
pte_t __pte;
struct init_buffer_stack_aux_param temp;
struct init_buffer_stack_aux_param *params = &temp;
__result = va_to_cpa_and_pte(mem_va, &__cpa, &__pte);
if (__result != 0)
return __result;
params->buffer.kernel.cpa = __cpa;
params->buffer.kernel.size = mem_size;
params->buffer.kernel.pte = __pte;
params->buffer.kernel.flags = mem_flags;
params->stack = stack;
params->buffer_size_enum = buffer_size_enum;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params,
sizeof(*params),
GXIO_MPIPE_OP_INIT_BUFFER_STACK_AUX);
}
EXPORT_SYMBOL(gxio_mpipe_init_buffer_stack_aux);
struct alloc_notif_rings_param {
unsigned int count;
unsigned int first;
unsigned int flags;
};
int gxio_mpipe_alloc_notif_rings(gxio_mpipe_context_t *context,
unsigned int count, unsigned int first,
unsigned int flags)
{
struct alloc_notif_rings_param temp;
struct alloc_notif_rings_param *params = &temp;
params->count = count;
params->first = first;
params->flags = flags;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params,
sizeof(*params), GXIO_MPIPE_OP_ALLOC_NOTIF_RINGS);
}
EXPORT_SYMBOL(gxio_mpipe_alloc_notif_rings);
struct init_notif_ring_aux_param {
union iorpc_mem_buffer buffer;
unsigned int ring;
};
int gxio_mpipe_init_notif_ring_aux(gxio_mpipe_context_t *context, void *mem_va,
size_t mem_size, unsigned int mem_flags,
unsigned int ring)
{
int __result;
unsigned long long __cpa;
pte_t __pte;
struct init_notif_ring_aux_param temp;
struct init_notif_ring_aux_param *params = &temp;
__result = va_to_cpa_and_pte(mem_va, &__cpa, &__pte);
if (__result != 0)
return __result;
params->buffer.kernel.cpa = __cpa;
params->buffer.kernel.size = mem_size;
params->buffer.kernel.pte = __pte;
params->buffer.kernel.flags = mem_flags;
params->ring = ring;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params,
sizeof(*params),
GXIO_MPIPE_OP_INIT_NOTIF_RING_AUX);
}
EXPORT_SYMBOL(gxio_mpipe_init_notif_ring_aux);
struct request_notif_ring_interrupt_param {
union iorpc_interrupt interrupt;
unsigned int ring;
};
int gxio_mpipe_request_notif_ring_interrupt(gxio_mpipe_context_t *context,
int inter_x, int inter_y,
int inter_ipi, int inter_event,
unsigned int ring)
{
struct request_notif_ring_interrupt_param temp;
struct request_notif_ring_interrupt_param *params = &temp;
params->interrupt.kernel.x = inter_x;
params->interrupt.kernel.y = inter_y;
params->interrupt.kernel.ipi = inter_ipi;
params->interrupt.kernel.event = inter_event;
params->ring = ring;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params,
sizeof(*params),
GXIO_MPIPE_OP_REQUEST_NOTIF_RING_INTERRUPT);
}
EXPORT_SYMBOL(gxio_mpipe_request_notif_ring_interrupt);
struct enable_notif_ring_interrupt_param {
unsigned int ring;
};
int gxio_mpipe_enable_notif_ring_interrupt(gxio_mpipe_context_t *context,
unsigned int ring)
{
struct enable_notif_ring_interrupt_param temp;
struct enable_notif_ring_interrupt_param *params = &temp;
params->ring = ring;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params,
sizeof(*params),
GXIO_MPIPE_OP_ENABLE_NOTIF_RING_INTERRUPT);
}
EXPORT_SYMBOL(gxio_mpipe_enable_notif_ring_interrupt);
struct alloc_notif_groups_param {
unsigned int count;
unsigned int first;
unsigned int flags;
};
int gxio_mpipe_alloc_notif_groups(gxio_mpipe_context_t *context,
unsigned int count, unsigned int first,
unsigned int flags)
{
struct alloc_notif_groups_param temp;
struct alloc_notif_groups_param *params = &temp;
params->count = count;
params->first = first;
params->flags = flags;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params,
sizeof(*params), GXIO_MPIPE_OP_ALLOC_NOTIF_GROUPS);
}
EXPORT_SYMBOL(gxio_mpipe_alloc_notif_groups);
struct init_notif_group_param {
unsigned int group;
gxio_mpipe_notif_group_bits_t bits;
};
int gxio_mpipe_init_notif_group(gxio_mpipe_context_t *context,
unsigned int group,
gxio_mpipe_notif_group_bits_t bits)
{
struct init_notif_group_param temp;
struct init_notif_group_param *params = &temp;
params->group = group;
params->bits = bits;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params,
sizeof(*params), GXIO_MPIPE_OP_INIT_NOTIF_GROUP);
}
EXPORT_SYMBOL(gxio_mpipe_init_notif_group);
struct alloc_buckets_param {
unsigned int count;
unsigned int first;
unsigned int flags;
};
int gxio_mpipe_alloc_buckets(gxio_mpipe_context_t *context, unsigned int count,
unsigned int first, unsigned int flags)
{
struct alloc_buckets_param temp;
struct alloc_buckets_param *params = &temp;
params->count = count;
params->first = first;
params->flags = flags;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params,
sizeof(*params), GXIO_MPIPE_OP_ALLOC_BUCKETS);
}
EXPORT_SYMBOL(gxio_mpipe_alloc_buckets);
struct init_bucket_param {
unsigned int bucket;
MPIPE_LBL_INIT_DAT_BSTS_TBL_t bucket_info;
};
int gxio_mpipe_init_bucket(gxio_mpipe_context_t *context, unsigned int bucket,
MPIPE_LBL_INIT_DAT_BSTS_TBL_t bucket_info)
{
struct init_bucket_param temp;
struct init_bucket_param *params = &temp;
params->bucket = bucket;
params->bucket_info = bucket_info;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params,
sizeof(*params), GXIO_MPIPE_OP_INIT_BUCKET);
}
EXPORT_SYMBOL(gxio_mpipe_init_bucket);
struct alloc_edma_rings_param {
unsigned int count;
unsigned int first;
unsigned int flags;
};
int gxio_mpipe_alloc_edma_rings(gxio_mpipe_context_t *context,
unsigned int count, unsigned int first,
unsigned int flags)
{
struct alloc_edma_rings_param temp;
struct alloc_edma_rings_param *params = &temp;
params->count = count;
params->first = first;
params->flags = flags;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params,
sizeof(*params), GXIO_MPIPE_OP_ALLOC_EDMA_RINGS);
}
EXPORT_SYMBOL(gxio_mpipe_alloc_edma_rings);
struct init_edma_ring_aux_param {
union iorpc_mem_buffer buffer;
unsigned int ring;
unsigned int channel;
};
int gxio_mpipe_init_edma_ring_aux(gxio_mpipe_context_t *context, void *mem_va,
size_t mem_size, unsigned int mem_flags,
unsigned int ring, unsigned int channel)
{
int __result;
unsigned long long __cpa;
pte_t __pte;
struct init_edma_ring_aux_param temp;
struct init_edma_ring_aux_param *params = &temp;
__result = va_to_cpa_and_pte(mem_va, &__cpa, &__pte);
if (__result != 0)
return __result;
params->buffer.kernel.cpa = __cpa;
params->buffer.kernel.size = mem_size;
params->buffer.kernel.pte = __pte;
params->buffer.kernel.flags = mem_flags;
params->ring = ring;
params->channel = channel;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params,
sizeof(*params), GXIO_MPIPE_OP_INIT_EDMA_RING_AUX);
}
EXPORT_SYMBOL(gxio_mpipe_init_edma_ring_aux);
int gxio_mpipe_commit_rules(gxio_mpipe_context_t *context, const void *blob,
size_t blob_size)
{
const void *params = blob;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params, blob_size,
GXIO_MPIPE_OP_COMMIT_RULES);
}
EXPORT_SYMBOL(gxio_mpipe_commit_rules);
struct register_client_memory_param {
unsigned int iotlb;
HV_PTE pte;
unsigned int flags;
};
int gxio_mpipe_register_client_memory(gxio_mpipe_context_t *context,
unsigned int iotlb, HV_PTE pte,
unsigned int flags)
{
struct register_client_memory_param temp;
struct register_client_memory_param *params = &temp;
params->iotlb = iotlb;
params->pte = pte;
params->flags = flags;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params,
sizeof(*params),
GXIO_MPIPE_OP_REGISTER_CLIENT_MEMORY);
}
EXPORT_SYMBOL(gxio_mpipe_register_client_memory);
struct link_open_aux_param {
_gxio_mpipe_link_name_t name;
unsigned int flags;
};
int gxio_mpipe_link_open_aux(gxio_mpipe_context_t *context,
_gxio_mpipe_link_name_t name, unsigned int flags)
{
struct link_open_aux_param temp;
struct link_open_aux_param *params = &temp;
params->name = name;
params->flags = flags;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params,
sizeof(*params), GXIO_MPIPE_OP_LINK_OPEN_AUX);
}
EXPORT_SYMBOL(gxio_mpipe_link_open_aux);
struct link_close_aux_param {
int mac;
};
int gxio_mpipe_link_close_aux(gxio_mpipe_context_t *context, int mac)
{
struct link_close_aux_param temp;
struct link_close_aux_param *params = &temp;
params->mac = mac;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params,
sizeof(*params), GXIO_MPIPE_OP_LINK_CLOSE_AUX);
}
EXPORT_SYMBOL(gxio_mpipe_link_close_aux);
struct link_set_attr_aux_param {
int mac;
uint32_t attr;
int64_t val;
};
int gxio_mpipe_link_set_attr_aux(gxio_mpipe_context_t *context, int mac,
uint32_t attr, int64_t val)
{
struct link_set_attr_aux_param temp;
struct link_set_attr_aux_param *params = &temp;
params->mac = mac;
params->attr = attr;
params->val = val;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params,
sizeof(*params), GXIO_MPIPE_OP_LINK_SET_ATTR_AUX);
}
EXPORT_SYMBOL(gxio_mpipe_link_set_attr_aux);
struct get_timestamp_aux_param {
uint64_t sec;
uint64_t nsec;
uint64_t cycles;
};
int gxio_mpipe_get_timestamp_aux(gxio_mpipe_context_t *context, uint64_t *sec,
uint64_t *nsec, uint64_t *cycles)
{
int __result;
struct get_timestamp_aux_param temp;
struct get_timestamp_aux_param *params = &temp;
__result =
hv_dev_pread(context->fd, 0, (HV_VirtAddr) params, sizeof(*params),
GXIO_MPIPE_OP_GET_TIMESTAMP_AUX);
*sec = params->sec;
*nsec = params->nsec;
*cycles = params->cycles;
return __result;
}
EXPORT_SYMBOL(gxio_mpipe_get_timestamp_aux);
struct set_timestamp_aux_param {
uint64_t sec;
uint64_t nsec;
uint64_t cycles;
};
int gxio_mpipe_set_timestamp_aux(gxio_mpipe_context_t *context, uint64_t sec,
uint64_t nsec, uint64_t cycles)
{
struct set_timestamp_aux_param temp;
struct set_timestamp_aux_param *params = &temp;
params->sec = sec;
params->nsec = nsec;
params->cycles = cycles;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params,
sizeof(*params), GXIO_MPIPE_OP_SET_TIMESTAMP_AUX);
}
EXPORT_SYMBOL(gxio_mpipe_set_timestamp_aux);
struct adjust_timestamp_aux_param {
int64_t nsec;
};
int gxio_mpipe_adjust_timestamp_aux(gxio_mpipe_context_t *context, int64_t nsec)
{
struct adjust_timestamp_aux_param temp;
struct adjust_timestamp_aux_param *params = &temp;
params->nsec = nsec;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params,
sizeof(*params),
GXIO_MPIPE_OP_ADJUST_TIMESTAMP_AUX);
}
EXPORT_SYMBOL(gxio_mpipe_adjust_timestamp_aux);
struct config_edma_ring_blks_param {
unsigned int ering;
unsigned int max_blks;
unsigned int min_snf_blks;
unsigned int db;
};
int gxio_mpipe_config_edma_ring_blks(gxio_mpipe_context_t *context,
unsigned int ering, unsigned int max_blks,
unsigned int min_snf_blks, unsigned int db)
{
struct config_edma_ring_blks_param temp;
struct config_edma_ring_blks_param *params = &temp;
params->ering = ering;
params->max_blks = max_blks;
params->min_snf_blks = min_snf_blks;
params->db = db;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params,
sizeof(*params),
GXIO_MPIPE_OP_CONFIG_EDMA_RING_BLKS);
}
EXPORT_SYMBOL(gxio_mpipe_config_edma_ring_blks);
struct adjust_timestamp_freq_param {
int32_t ppb;
};
int gxio_mpipe_adjust_timestamp_freq(gxio_mpipe_context_t *context, int32_t ppb)
{
struct adjust_timestamp_freq_param temp;
struct adjust_timestamp_freq_param *params = &temp;
params->ppb = ppb;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params,
sizeof(*params),
GXIO_MPIPE_OP_ADJUST_TIMESTAMP_FREQ);
}
EXPORT_SYMBOL(gxio_mpipe_adjust_timestamp_freq);
struct arm_pollfd_param {
union iorpc_pollfd pollfd;
};
int gxio_mpipe_arm_pollfd(gxio_mpipe_context_t *context, int pollfd_cookie)
{
struct arm_pollfd_param temp;
struct arm_pollfd_param *params = &temp;
params->pollfd.kernel.cookie = pollfd_cookie;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params,
sizeof(*params), GXIO_MPIPE_OP_ARM_POLLFD);
}
EXPORT_SYMBOL(gxio_mpipe_arm_pollfd);
struct close_pollfd_param {
union iorpc_pollfd pollfd;
};
int gxio_mpipe_close_pollfd(gxio_mpipe_context_t *context, int pollfd_cookie)
{
struct close_pollfd_param temp;
struct close_pollfd_param *params = &temp;
params->pollfd.kernel.cookie = pollfd_cookie;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params,
sizeof(*params), GXIO_MPIPE_OP_CLOSE_POLLFD);
}
EXPORT_SYMBOL(gxio_mpipe_close_pollfd);
struct get_mmio_base_param {
HV_PTE base;
};
int gxio_mpipe_get_mmio_base(gxio_mpipe_context_t *context, HV_PTE *base)
{
int __result;
struct get_mmio_base_param temp;
struct get_mmio_base_param *params = &temp;
__result =
hv_dev_pread(context->fd, 0, (HV_VirtAddr) params, sizeof(*params),
GXIO_MPIPE_OP_GET_MMIO_BASE);
*base = params->base;
return __result;
}
EXPORT_SYMBOL(gxio_mpipe_get_mmio_base);
struct check_mmio_offset_param {
unsigned long offset;
unsigned long size;
};
int gxio_mpipe_check_mmio_offset(gxio_mpipe_context_t *context,
unsigned long offset, unsigned long size)
{
struct check_mmio_offset_param temp;
struct check_mmio_offset_param *params = &temp;
params->offset = offset;
params->size = size;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params,
sizeof(*params), GXIO_MPIPE_OP_CHECK_MMIO_OFFSET);
}
EXPORT_SYMBOL(gxio_mpipe_check_mmio_offset);

102
arch/tile/gxio/iorpc_mpipe_info.c Normal file
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/*
* Copyright 2012 Tilera Corporation. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, version 2.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
* NON INFRINGEMENT. See the GNU General Public License for
* more details.
*/
/* This file is machine-generated; DO NOT EDIT! */
#include "gxio/iorpc_mpipe_info.h"
struct instance_aux_param {
_gxio_mpipe_link_name_t name;
};
int gxio_mpipe_info_instance_aux(gxio_mpipe_info_context_t *context,
_gxio_mpipe_link_name_t name)
{
struct instance_aux_param temp;
struct instance_aux_param *params = &temp;
params->name = name;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params,
sizeof(*params), GXIO_MPIPE_INFO_OP_INSTANCE_AUX);
}
EXPORT_SYMBOL(gxio_mpipe_info_instance_aux);
struct enumerate_aux_param {
_gxio_mpipe_link_name_t name;
_gxio_mpipe_link_mac_t mac;
};
int gxio_mpipe_info_enumerate_aux(gxio_mpipe_info_context_t *context,
unsigned int idx,
_gxio_mpipe_link_name_t *name,
_gxio_mpipe_link_mac_t *mac)
{
int __result;
struct enumerate_aux_param temp;
struct enumerate_aux_param *params = &temp;
__result =
hv_dev_pread(context->fd, 0, (HV_VirtAddr) params, sizeof(*params),
(((uint64_t)idx << 32) |
GXIO_MPIPE_INFO_OP_ENUMERATE_AUX));
*name = params->name;
*mac = params->mac;
return __result;
}
EXPORT_SYMBOL(gxio_mpipe_info_enumerate_aux);
struct get_mmio_base_param {
HV_PTE base;
};
int gxio_mpipe_info_get_mmio_base(gxio_mpipe_info_context_t *context,
HV_PTE *base)
{
int __result;
struct get_mmio_base_param temp;
struct get_mmio_base_param *params = &temp;
__result =
hv_dev_pread(context->fd, 0, (HV_VirtAddr) params, sizeof(*params),
GXIO_MPIPE_INFO_OP_GET_MMIO_BASE);
*base = params->base;
return __result;
}
EXPORT_SYMBOL(gxio_mpipe_info_get_mmio_base);
struct check_mmio_offset_param {
unsigned long offset;
unsigned long size;
};
int gxio_mpipe_info_check_mmio_offset(gxio_mpipe_info_context_t *context,
unsigned long offset, unsigned long size)
{
struct check_mmio_offset_param temp;
struct check_mmio_offset_param *params = &temp;
params->offset = offset;
params->size = size;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params,
sizeof(*params),
GXIO_MPIPE_INFO_OP_CHECK_MMIO_OFFSET);
}
EXPORT_SYMBOL(gxio_mpipe_info_check_mmio_offset);

350
arch/tile/gxio/iorpc_trio.c Normal file
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/*
* Copyright 2012 Tilera Corporation. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, version 2.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
* NON INFRINGEMENT. See the GNU General Public License for
* more details.
*/
/* This file is machine-generated; DO NOT EDIT! */
#include "gxio/iorpc_trio.h"
struct alloc_asids_param {
unsigned int count;
unsigned int first;
unsigned int flags;
};
int gxio_trio_alloc_asids(gxio_trio_context_t *context, unsigned int count,
unsigned int first, unsigned int flags)
{
struct alloc_asids_param temp;
struct alloc_asids_param *params = &temp;
params->count = count;
params->first = first;
params->flags = flags;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params,
sizeof(*params), GXIO_TRIO_OP_ALLOC_ASIDS);
}
EXPORT_SYMBOL(gxio_trio_alloc_asids);
struct alloc_memory_maps_param {
unsigned int count;
unsigned int first;
unsigned int flags;
};
int gxio_trio_alloc_memory_maps(gxio_trio_context_t *context,
unsigned int count, unsigned int first,
unsigned int flags)
{
struct alloc_memory_maps_param temp;
struct alloc_memory_maps_param *params = &temp;
params->count = count;
params->first = first;
params->flags = flags;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params,
sizeof(*params), GXIO_TRIO_OP_ALLOC_MEMORY_MAPS);
}
EXPORT_SYMBOL(gxio_trio_alloc_memory_maps);
struct alloc_scatter_queues_param {
unsigned int count;
unsigned int first;
unsigned int flags;
};
int gxio_trio_alloc_scatter_queues(gxio_trio_context_t *context,
unsigned int count, unsigned int first,
unsigned int flags)
{
struct alloc_scatter_queues_param temp;
struct alloc_scatter_queues_param *params = &temp;
params->count = count;
params->first = first;
params->flags = flags;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params,
sizeof(*params),
GXIO_TRIO_OP_ALLOC_SCATTER_QUEUES);
}
EXPORT_SYMBOL(gxio_trio_alloc_scatter_queues);
struct alloc_pio_regions_param {
unsigned int count;
unsigned int first;
unsigned int flags;
};
int gxio_trio_alloc_pio_regions(gxio_trio_context_t *context,
unsigned int count, unsigned int first,
unsigned int flags)
{
struct alloc_pio_regions_param temp;
struct alloc_pio_regions_param *params = &temp;
params->count = count;
params->first = first;
params->flags = flags;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params,
sizeof(*params), GXIO_TRIO_OP_ALLOC_PIO_REGIONS);
}
EXPORT_SYMBOL(gxio_trio_alloc_pio_regions);
struct init_pio_region_aux_param {
unsigned int pio_region;
unsigned int mac;
uint32_t bus_address_hi;
unsigned int flags;
};
int gxio_trio_init_pio_region_aux(gxio_trio_context_t *context,
unsigned int pio_region, unsigned int mac,
uint32_t bus_address_hi, unsigned int flags)
{
struct init_pio_region_aux_param temp;
struct init_pio_region_aux_param *params = &temp;
params->pio_region = pio_region;
params->mac = mac;
params->bus_address_hi = bus_address_hi;
params->flags = flags;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params,
sizeof(*params), GXIO_TRIO_OP_INIT_PIO_REGION_AUX);
}
EXPORT_SYMBOL(gxio_trio_init_pio_region_aux);
struct init_memory_map_mmu_aux_param {
unsigned int map;
unsigned long va;
uint64_t size;
unsigned int asid;
unsigned int mac;
uint64_t bus_address;
unsigned int node;
unsigned int order_mode;
};
int gxio_trio_init_memory_map_mmu_aux(gxio_trio_context_t *context,
unsigned int map, unsigned long va,
uint64_t size, unsigned int asid,
unsigned int mac, uint64_t bus_address,
unsigned int node,
unsigned int order_mode)
{
struct init_memory_map_mmu_aux_param temp;
struct init_memory_map_mmu_aux_param *params = &temp;
params->map = map;
params->va = va;
params->size = size;
params->asid = asid;
params->mac = mac;
params->bus_address = bus_address;
params->node = node;
params->order_mode = order_mode;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params,
sizeof(*params),
GXIO_TRIO_OP_INIT_MEMORY_MAP_MMU_AUX);
}
EXPORT_SYMBOL(gxio_trio_init_memory_map_mmu_aux);
struct get_port_property_param {
struct pcie_trio_ports_property trio_ports;
};
int gxio_trio_get_port_property(gxio_trio_context_t *context,
struct pcie_trio_ports_property *trio_ports)
{
int __result;
struct get_port_property_param temp;
struct get_port_property_param *params = &temp;
__result =
hv_dev_pread(context->fd, 0, (HV_VirtAddr) params, sizeof(*params),
GXIO_TRIO_OP_GET_PORT_PROPERTY);
*trio_ports = params->trio_ports;
return __result;
}
EXPORT_SYMBOL(gxio_trio_get_port_property);
struct config_legacy_intr_param {
union iorpc_interrupt interrupt;
unsigned int mac;
unsigned int intx;
};
int gxio_trio_config_legacy_intr(gxio_trio_context_t *context, int inter_x,
int inter_y, int inter_ipi, int inter_event,
unsigned int mac, unsigned int intx)
{
struct config_legacy_intr_param temp;
struct config_legacy_intr_param *params = &temp;
params->interrupt.kernel.x = inter_x;
params->interrupt.kernel.y = inter_y;
params->interrupt.kernel.ipi = inter_ipi;
params->interrupt.kernel.event = inter_event;
params->mac = mac;
params->intx = intx;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params,
sizeof(*params), GXIO_TRIO_OP_CONFIG_LEGACY_INTR);
}
EXPORT_SYMBOL(gxio_trio_config_legacy_intr);
struct config_msi_intr_param {
union iorpc_interrupt interrupt;
unsigned int mac;
unsigned int mem_map;
uint64_t mem_map_base;
uint64_t mem_map_limit;
unsigned int asid;
};
int gxio_trio_config_msi_intr(gxio_trio_context_t *context, int inter_x,
int inter_y, int inter_ipi, int inter_event,
unsigned int mac, unsigned int mem_map,
uint64_t mem_map_base, uint64_t mem_map_limit,
unsigned int asid)
{
struct config_msi_intr_param temp;
struct config_msi_intr_param *params = &temp;
params->interrupt.kernel.x = inter_x;
params->interrupt.kernel.y = inter_y;
params->interrupt.kernel.ipi = inter_ipi;
params->interrupt.kernel.event = inter_event;
params->mac = mac;
params->mem_map = mem_map;
params->mem_map_base = mem_map_base;
params->mem_map_limit = mem_map_limit;
params->asid = asid;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params,
sizeof(*params), GXIO_TRIO_OP_CONFIG_MSI_INTR);
}
EXPORT_SYMBOL(gxio_trio_config_msi_intr);
struct set_mps_mrs_param {
uint16_t mps;
uint16_t mrs;
unsigned int mac;
};
int gxio_trio_set_mps_mrs(gxio_trio_context_t *context, uint16_t mps,
uint16_t mrs, unsigned int mac)
{
struct set_mps_mrs_param temp;
struct set_mps_mrs_param *params = &temp;
params->mps = mps;
params->mrs = mrs;
params->mac = mac;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params,
sizeof(*params), GXIO_TRIO_OP_SET_MPS_MRS);
}
EXPORT_SYMBOL(gxio_trio_set_mps_mrs);
struct force_rc_link_up_param {
unsigned int mac;
};
int gxio_trio_force_rc_link_up(gxio_trio_context_t *context, unsigned int mac)
{
struct force_rc_link_up_param temp;
struct force_rc_link_up_param *params = &temp;
params->mac = mac;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params,
sizeof(*params), GXIO_TRIO_OP_FORCE_RC_LINK_UP);
}
EXPORT_SYMBOL(gxio_trio_force_rc_link_up);
struct force_ep_link_up_param {
unsigned int mac;
};
int gxio_trio_force_ep_link_up(gxio_trio_context_t *context, unsigned int mac)
{
struct force_ep_link_up_param temp;
struct force_ep_link_up_param *params = &temp;
params->mac = mac;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params,
sizeof(*params), GXIO_TRIO_OP_FORCE_EP_LINK_UP);
}
EXPORT_SYMBOL(gxio_trio_force_ep_link_up);
struct get_mmio_base_param {
HV_PTE base;
};
int gxio_trio_get_mmio_base(gxio_trio_context_t *context, HV_PTE *base)
{
int __result;
struct get_mmio_base_param temp;
struct get_mmio_base_param *params = &temp;
__result =
hv_dev_pread(context->fd, 0, (HV_VirtAddr) params, sizeof(*params),
GXIO_TRIO_OP_GET_MMIO_BASE);
*base = params->base;
return __result;
}
EXPORT_SYMBOL(gxio_trio_get_mmio_base);
struct check_mmio_offset_param {
unsigned long offset;
unsigned long size;
};
int gxio_trio_check_mmio_offset(gxio_trio_context_t *context,
unsigned long offset, unsigned long size)
{
struct check_mmio_offset_param temp;
struct check_mmio_offset_param *params = &temp;
params->offset = offset;
params->size = size;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params,
sizeof(*params), GXIO_TRIO_OP_CHECK_MMIO_OFFSET);
}
EXPORT_SYMBOL(gxio_trio_check_mmio_offset);

77
arch/tile/gxio/iorpc_uart.c Normal file
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/*
* Copyright 2013 Tilera Corporation. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, version 2.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
* NON INFRINGEMENT. See the GNU General Public License for
* more details.
*/
/* This file is machine-generated; DO NOT EDIT! */
#include "gxio/iorpc_uart.h"
struct cfg_interrupt_param {
union iorpc_interrupt interrupt;
};
int gxio_uart_cfg_interrupt(gxio_uart_context_t *context, int inter_x,
int inter_y, int inter_ipi, int inter_event)
{
struct cfg_interrupt_param temp;
struct cfg_interrupt_param *params = &temp;
params->interrupt.kernel.x = inter_x;
params->interrupt.kernel.y = inter_y;
params->interrupt.kernel.ipi = inter_ipi;
params->interrupt.kernel.event = inter_event;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params,
sizeof(*params), GXIO_UART_OP_CFG_INTERRUPT);
}
EXPORT_SYMBOL(gxio_uart_cfg_interrupt);
struct get_mmio_base_param {
HV_PTE base;
};
int gxio_uart_get_mmio_base(gxio_uart_context_t *context, HV_PTE *base)
{
int __result;
struct get_mmio_base_param temp;
struct get_mmio_base_param *params = &temp;
__result =
hv_dev_pread(context->fd, 0, (HV_VirtAddr) params, sizeof(*params),
GXIO_UART_OP_GET_MMIO_BASE);
*base = params->base;
return __result;
}
EXPORT_SYMBOL(gxio_uart_get_mmio_base);
struct check_mmio_offset_param {
unsigned long offset;
unsigned long size;
};
int gxio_uart_check_mmio_offset(gxio_uart_context_t *context,
unsigned long offset, unsigned long size)
{
struct check_mmio_offset_param temp;
struct check_mmio_offset_param *params = &temp;
params->offset = offset;
params->size = size;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params,
sizeof(*params), GXIO_UART_OP_CHECK_MMIO_OFFSET);
}
EXPORT_SYMBOL(gxio_uart_check_mmio_offset);

99
arch/tile/gxio/iorpc_usb_host.c Normal file
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/*
* Copyright 2012 Tilera Corporation. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, version 2.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
* NON INFRINGEMENT. See the GNU General Public License for
* more details.
*/
/* This file is machine-generated; DO NOT EDIT! */
#include "gxio/iorpc_usb_host.h"
struct cfg_interrupt_param {
union iorpc_interrupt interrupt;
};
int gxio_usb_host_cfg_interrupt(gxio_usb_host_context_t *context, int inter_x,
int inter_y, int inter_ipi, int inter_event)
{
struct cfg_interrupt_param temp;
struct cfg_interrupt_param *params = &temp;
params->interrupt.kernel.x = inter_x;
params->interrupt.kernel.y = inter_y;
params->interrupt.kernel.ipi = inter_ipi;
params->interrupt.kernel.event = inter_event;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params,
sizeof(*params), GXIO_USB_HOST_OP_CFG_INTERRUPT);
}
EXPORT_SYMBOL(gxio_usb_host_cfg_interrupt);
struct register_client_memory_param {
HV_PTE pte;
unsigned int flags;
};
int gxio_usb_host_register_client_memory(gxio_usb_host_context_t *context,
HV_PTE pte, unsigned int flags)
{
struct register_client_memory_param temp;
struct register_client_memory_param *params = &temp;
params->pte = pte;
params->flags = flags;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params,
sizeof(*params),
GXIO_USB_HOST_OP_REGISTER_CLIENT_MEMORY);
}
EXPORT_SYMBOL(gxio_usb_host_register_client_memory);
struct get_mmio_base_param {
HV_PTE base;
};
int gxio_usb_host_get_mmio_base(gxio_usb_host_context_t *context, HV_PTE *base)
{
int __result;
struct get_mmio_base_param temp;
struct get_mmio_base_param *params = &temp;
__result =
hv_dev_pread(context->fd, 0, (HV_VirtAddr) params, sizeof(*params),
GXIO_USB_HOST_OP_GET_MMIO_BASE);
*base = params->base;
return __result;
}
EXPORT_SYMBOL(gxio_usb_host_get_mmio_base);
struct check_mmio_offset_param {
unsigned long offset;
unsigned long size;
};
int gxio_usb_host_check_mmio_offset(gxio_usb_host_context_t *context,
unsigned long offset, unsigned long size)
{
struct check_mmio_offset_param temp;
struct check_mmio_offset_param *params = &temp;
params->offset = offset;
params->size = size;
return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params,
sizeof(*params),
GXIO_USB_HOST_OP_CHECK_MMIO_OFFSET);
}
EXPORT_SYMBOL(gxio_usb_host_check_mmio_offset);

61
arch/tile/gxio/kiorpc.c Normal file
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/*
* Copyright 2012 Tilera Corporation. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, version 2.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
* NON INFRINGEMENT. See the GNU General Public License for
* more details.
*
* TILE-Gx IORPC support for kernel I/O drivers.
*/
#include <linux/mmzone.h>
#include <linux/module.h>
#include <linux/io.h>
#include <gxio/iorpc_globals.h>
#include <gxio/kiorpc.h>
#ifdef DEBUG_IORPC
#define TRACE(FMT, ...) pr_info(SIMPLE_MSG_LINE FMT, ## __VA_ARGS__)
#else
#define TRACE(...)
#endif
/* Create kernel-VA-space MMIO mapping for an on-chip IO device. */
void __iomem *iorpc_ioremap(int hv_fd, resource_size_t offset,
unsigned long size)
{
pgprot_t mmio_base, prot = { 0 };
unsigned long pfn;
int err;
/* Look up the shim's lotar and base PA. */
err = __iorpc_get_mmio_base(hv_fd, &mmio_base);
if (err) {
TRACE("get_mmio_base() failure: %d\n", err);
return NULL;
}
/* Make sure the HV driver approves of our offset and size. */
err = __iorpc_check_mmio_offset(hv_fd, offset, size);
if (err) {
TRACE("check_mmio_offset() failure: %d\n", err);
return NULL;
}
/*
* mmio_base contains a base pfn and homing coordinates. Turn
* it into an MMIO pgprot and offset pfn.
*/
prot = hv_pte_set_lotar(prot, hv_pte_get_lotar(mmio_base));
pfn = pte_pfn(mmio_base) + PFN_DOWN(offset);
return ioremap_prot(PFN_PHYS(pfn), size, prot);
}
EXPORT_SYMBOL(iorpc_ioremap);

605
arch/tile/gxio/mpipe.c Normal file
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/*
* Copyright 2012 Tilera Corporation. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, version 2.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
* NON INFRINGEMENT. See the GNU General Public License for
* more details.
*/
/*
* Implementation of mpipe gxio calls.
*/
#include <linux/errno.h>
#include <linux/io.h>
#include <linux/module.h>
#include <gxio/iorpc_globals.h>
#include <gxio/iorpc_mpipe.h>
#include <gxio/iorpc_mpipe_info.h>
#include <gxio/kiorpc.h>
#include <gxio/mpipe.h>
/* HACK: Avoid pointless "shadow" warnings. */
#define link link_shadow
/**
* strscpy - Copy a C-string into a sized buffer, but only if it fits
* @dest: Where to copy the string to
* @src: Where to copy the string from
* @size: size of destination buffer
*
* Use this routine to avoid copying too-long strings.
* The routine returns the total number of bytes copied
* (including the trailing NUL) or zero if the buffer wasn't
* big enough. To ensure that programmers pay attention
* to the return code, the destination has a single NUL
* written at the front (if size is non-zero) when the
* buffer is not big enough.
*/
static size_t strscpy(char *dest, const char *src, size_t size)
{
size_t len = strnlen(src, size) + 1;
if (len > size) {
if (size)
dest[0] = '\0';
return 0;
}
memcpy(dest, src, len);
return len;
}
int gxio_mpipe_init(gxio_mpipe_context_t *context, unsigned int mpipe_index)
{
char file[32];
int fd;
int i;
if (mpipe_index >= GXIO_MPIPE_INSTANCE_MAX)
return -EINVAL;
snprintf(file, sizeof(file), "mpipe/%d/iorpc", mpipe_index);
fd = hv_dev_open((HV_VirtAddr) file, 0);
context->fd = fd;
if (fd < 0) {
if (fd >= GXIO_ERR_MIN && fd <= GXIO_ERR_MAX)
return fd;
else
return -ENODEV;
}
/* Map in the MMIO space. */
context->mmio_cfg_base = (void __force *)
iorpc_ioremap(fd, HV_MPIPE_CONFIG_MMIO_OFFSET,
HV_MPIPE_CONFIG_MMIO_SIZE);
if (context->mmio_cfg_base == NULL)
goto cfg_failed;
context->mmio_fast_base = (void __force *)
iorpc_ioremap(fd, HV_MPIPE_FAST_MMIO_OFFSET,
HV_MPIPE_FAST_MMIO_SIZE);
if (context->mmio_fast_base == NULL)
goto fast_failed;
/* Initialize the stacks. */
for (i = 0; i < 8; i++)
context->__stacks.stacks[i] = 255;
context->instance = mpipe_index;
return 0;
fast_failed:
iounmap((void __force __iomem *)(context->mmio_cfg_base));
cfg_failed:
hv_dev_close(context->fd);
context->fd = -1;
return -ENODEV;
}
EXPORT_SYMBOL_GPL(gxio_mpipe_init);
int gxio_mpipe_destroy(gxio_mpipe_context_t *context)
{
iounmap((void __force __iomem *)(context->mmio_cfg_base));
iounmap((void __force __iomem *)(context->mmio_fast_base));
return hv_dev_close(context->fd);
}
EXPORT_SYMBOL_GPL(gxio_mpipe_destroy);
static int16_t gxio_mpipe_buffer_sizes[8] =
{ 128, 256, 512, 1024, 1664, 4096, 10368, 16384 };
gxio_mpipe_buffer_size_enum_t gxio_mpipe_buffer_size_to_buffer_size_enum(size_t
size)
{
int i;
for (i = 0; i < 7; i++)
if (size <= gxio_mpipe_buffer_sizes[i])
break;
return i;
}
EXPORT_SYMBOL_GPL(gxio_mpipe_buffer_size_to_buffer_size_enum);
size_t gxio_mpipe_buffer_size_enum_to_buffer_size(gxio_mpipe_buffer_size_enum_t
buffer_size_enum)
{
if (buffer_size_enum > 7)
buffer_size_enum = 7;
return gxio_mpipe_buffer_sizes[buffer_size_enum];
}
EXPORT_SYMBOL_GPL(gxio_mpipe_buffer_size_enum_to_buffer_size);
size_t gxio_mpipe_calc_buffer_stack_bytes(unsigned long buffers)
{
const int BUFFERS_PER_LINE = 12;
/* Count the number of cachlines. */
unsigned long lines =
(buffers + BUFFERS_PER_LINE - 1) / BUFFERS_PER_LINE;
/* Convert to bytes. */
return lines * CHIP_L2_LINE_SIZE();
}
EXPORT_SYMBOL_GPL(gxio_mpipe_calc_buffer_stack_bytes);
int gxio_mpipe_init_buffer_stack(gxio_mpipe_context_t *context,
unsigned int stack,
gxio_mpipe_buffer_size_enum_t
buffer_size_enum, void *mem, size_t mem_size,
unsigned int mem_flags)
{
int result;
memset(mem, 0, mem_size);
result = gxio_mpipe_init_buffer_stack_aux(context, mem, mem_size,
mem_flags, stack,
buffer_size_enum);
if (result < 0)
return result;
/* Save the stack. */
context->__stacks.stacks[buffer_size_enum] = stack;
return 0;
}
EXPORT_SYMBOL_GPL(gxio_mpipe_init_buffer_stack);
int gxio_mpipe_init_notif_ring(gxio_mpipe_context_t *context,
unsigned int ring,
void *mem, size_t mem_size,
unsigned int mem_flags)
{
return gxio_mpipe_init_notif_ring_aux(context, mem, mem_size,
mem_flags, ring);
}
EXPORT_SYMBOL_GPL(gxio_mpipe_init_notif_ring);
int gxio_mpipe_init_notif_group_and_buckets(gxio_mpipe_context_t *context,
unsigned int group,
unsigned int ring,
unsigned int num_rings,
unsigned int bucket,
unsigned int num_buckets,
gxio_mpipe_bucket_mode_t mode)
{
int i;
int result;
gxio_mpipe_bucket_info_t bucket_info = { {
.group = group,
.mode = mode,
}
};
gxio_mpipe_notif_group_bits_t bits = { {0} };
for (i = 0; i < num_rings; i++)
gxio_mpipe_notif_group_add_ring(&bits, ring + i);
result = gxio_mpipe_init_notif_group(context, group, bits);
if (result != 0)
return result;
for (i = 0; i < num_buckets; i++) {
bucket_info.notifring = ring + (i % num_rings);
result = gxio_mpipe_init_bucket(context, bucket + i,
bucket_info);
if (result != 0)
return result;
}
return 0;
}
EXPORT_SYMBOL_GPL(gxio_mpipe_init_notif_group_and_buckets);
int gxio_mpipe_init_edma_ring(gxio_mpipe_context_t *context,
unsigned int ring, unsigned int channel,
void *mem, size_t mem_size,
unsigned int mem_flags)
{
memset(mem, 0, mem_size);
return gxio_mpipe_init_edma_ring_aux(context, mem, mem_size, mem_flags,
ring, channel);
}
EXPORT_SYMBOL_GPL(gxio_mpipe_init_edma_ring);
void gxio_mpipe_rules_init(gxio_mpipe_rules_t *rules,
gxio_mpipe_context_t *context)
{
rules->context = context;
memset(&rules->list, 0, sizeof(rules->list));
}
EXPORT_SYMBOL_GPL(gxio_mpipe_rules_init);
int gxio_mpipe_rules_begin(gxio_mpipe_rules_t *rules,
unsigned int bucket, unsigned int num_buckets,
gxio_mpipe_rules_stacks_t *stacks)
{
int i;
int stack = 255;
gxio_mpipe_rules_list_t *list = &rules->list;
/* Current rule. */
gxio_mpipe_rules_rule_t *rule =
(gxio_mpipe_rules_rule_t *) (list->rules + list->head);
unsigned int head = list->tail;
/*
* Align next rule properly.
*Note that "dmacs_and_vlans" will also be aligned.
*/
unsigned int pad = 0;
while (((head + pad) % __alignof__(gxio_mpipe_rules_rule_t)) != 0)
pad++;
/*
* Verify room.
* ISSUE: Mark rules as broken on error?
*/
if (head + pad + sizeof(*rule) >= sizeof(list->rules))
return GXIO_MPIPE_ERR_RULES_FULL;
/* Verify num_buckets is a power of 2. */
if (__builtin_popcount(num_buckets) != 1)
return GXIO_MPIPE_ERR_RULES_INVALID;
/* Add padding to previous rule. */
rule->size += pad;
/* Start a new rule. */
list->head = head + pad;
rule = (gxio_mpipe_rules_rule_t *) (list->rules + list->head);
/* Default some values. */
rule->headroom = 2;
rule->tailroom = 0;
rule->capacity = 16384;
/* Save the bucket info. */
rule->bucket_mask = num_buckets - 1;
rule->bucket_first = bucket;
for (i = 8 - 1; i >= 0; i--) {
int maybe =
stacks ? stacks->stacks[i] : rules->context->__stacks.
stacks[i];
if (maybe != 255)
stack = maybe;
rule->stacks.stacks[i] = stack;
}
if (stack == 255)
return GXIO_MPIPE_ERR_RULES_INVALID;
/* NOTE: Only entries at the end of the array can be 255. */
for (i = 8 - 1; i > 0; i--) {
if (rule->stacks.stacks[i] == 255) {
rule->stacks.stacks[i] = stack;
rule->capacity =
gxio_mpipe_buffer_size_enum_to_buffer_size(i -
1);
}
}
rule->size = sizeof(*rule);
list->tail = list->head + rule->size;
return 0;
}
EXPORT_SYMBOL_GPL(gxio_mpipe_rules_begin);
int gxio_mpipe_rules_add_channel(gxio_mpipe_rules_t *rules,
unsigned int channel)
{
gxio_mpipe_rules_list_t *list = &rules->list;
gxio_mpipe_rules_rule_t *rule =
(gxio_mpipe_rules_rule_t *) (list->rules + list->head);
/* Verify channel. */
if (channel >= 32)
return GXIO_MPIPE_ERR_RULES_INVALID;
/* Verify begun. */
if (list->tail == 0)
return GXIO_MPIPE_ERR_RULES_EMPTY;
rule->channel_bits |= (1UL << channel);
return 0;
}
EXPORT_SYMBOL_GPL(gxio_mpipe_rules_add_channel);
int gxio_mpipe_rules_set_headroom(gxio_mpipe_rules_t *rules, uint8_t headroom)
{
gxio_mpipe_rules_list_t *list = &rules->list;
gxio_mpipe_rules_rule_t *rule =
(gxio_mpipe_rules_rule_t *) (list->rules + list->head);
/* Verify begun. */
if (list->tail == 0)
return GXIO_MPIPE_ERR_RULES_EMPTY;
rule->headroom = headroom;
return 0;
}
EXPORT_SYMBOL_GPL(gxio_mpipe_rules_set_headroom);
int gxio_mpipe_rules_commit(gxio_mpipe_rules_t *rules)
{
gxio_mpipe_rules_list_t *list = &rules->list;
unsigned int size =
offsetof(gxio_mpipe_rules_list_t, rules) + list->tail;
return gxio_mpipe_commit_rules(rules->context, list, size);
}
EXPORT_SYMBOL_GPL(gxio_mpipe_rules_commit);
int gxio_mpipe_iqueue_init(gxio_mpipe_iqueue_t *iqueue,
gxio_mpipe_context_t *context,
unsigned int ring,
void *mem, size_t mem_size, unsigned int mem_flags)
{
/* The init call below will verify that "mem_size" is legal. */
unsigned int num_entries = mem_size / sizeof(gxio_mpipe_idesc_t);
iqueue->context = context;
iqueue->idescs = (gxio_mpipe_idesc_t *)mem;
iqueue->ring = ring;
iqueue->num_entries = num_entries;
iqueue->mask_num_entries = num_entries - 1;
iqueue->log2_num_entries = __builtin_ctz(num_entries);
iqueue->head = 1;
#ifdef __BIG_ENDIAN__
iqueue->swapped = 0;
#endif
/* Initialize the "tail". */
__gxio_mmio_write(mem, iqueue->head);
return gxio_mpipe_init_notif_ring(context, ring, mem, mem_size,
mem_flags);
}
EXPORT_SYMBOL_GPL(gxio_mpipe_iqueue_init);
int gxio_mpipe_equeue_init(gxio_mpipe_equeue_t *equeue,
gxio_mpipe_context_t *context,
unsigned int ering,
unsigned int channel,
void *mem, unsigned int mem_size,
unsigned int mem_flags)
{
/* The init call below will verify that "mem_size" is legal. */
unsigned int num_entries = mem_size / sizeof(gxio_mpipe_edesc_t);
/* Offset used to read number of completed commands. */
MPIPE_EDMA_POST_REGION_ADDR_t offset;
int result = gxio_mpipe_init_edma_ring(context, ering, channel,
mem, mem_size, mem_flags);
if (result < 0)
return result;
memset(equeue, 0, sizeof(*equeue));
offset.word = 0;
offset.region =
MPIPE_MMIO_ADDR__REGION_VAL_EDMA -
MPIPE_MMIO_ADDR__REGION_VAL_IDMA;
offset.ring = ering;
__gxio_dma_queue_init(&equeue->dma_queue,
context->mmio_fast_base + offset.word,
num_entries);
equeue->edescs = mem;
equeue->mask_num_entries = num_entries - 1;
equeue->log2_num_entries = __builtin_ctz(num_entries);
equeue->context = context;
equeue->ering = ering;
equeue->channel = channel;
return 0;
}
EXPORT_SYMBOL_GPL(gxio_mpipe_equeue_init);
int gxio_mpipe_set_timestamp(gxio_mpipe_context_t *context,
const struct timespec *ts)
{
cycles_t cycles = get_cycles();
return gxio_mpipe_set_timestamp_aux(context, (uint64_t)ts->tv_sec,
(uint64_t)ts->tv_nsec,
(uint64_t)cycles);
}
int gxio_mpipe_get_timestamp(gxio_mpipe_context_t *context,
struct timespec *ts)
{
int ret;
cycles_t cycles_prev, cycles_now, clock_rate;
cycles_prev = get_cycles();
ret = gxio_mpipe_get_timestamp_aux(context, (uint64_t *)&ts->tv_sec,
(uint64_t *)&ts->tv_nsec,
(uint64_t *)&cycles_now);
if (ret < 0) {
return ret;
}
clock_rate = get_clock_rate();
ts->tv_nsec -= (cycles_now - cycles_prev) * 1000000000LL / clock_rate;
if (ts->tv_nsec < 0) {
ts->tv_nsec += 1000000000LL;
ts->tv_sec -= 1;
}
return ret;
}
int gxio_mpipe_adjust_timestamp(gxio_mpipe_context_t *context, int64_t delta)
{
return gxio_mpipe_adjust_timestamp_aux(context, delta);
}
/* Get our internal context used for link name access. This context is
* special in that it is not associated with an mPIPE service domain.
*/
static gxio_mpipe_context_t *_gxio_get_link_context(void)
{
static gxio_mpipe_context_t context;
static gxio_mpipe_context_t *contextp;
static int tried_open = 0;
static DEFINE_MUTEX(mutex);
mutex_lock(&mutex);
if (!tried_open) {
int i = 0;
tried_open = 1;
/*
* "4" here is the maximum possible number of mPIPE shims; it's
* an exaggeration but we shouldn't ever go beyond 2 anyway.
*/
for (i = 0; i < 4; i++) {
char file[80];
snprintf(file, sizeof(file), "mpipe/%d/iorpc_info", i);
context.fd = hv_dev_open((HV_VirtAddr) file, 0);
if (context.fd < 0)
continue;
contextp = &context;
break;
}
}
mutex_unlock(&mutex);
return contextp;
}
int gxio_mpipe_link_instance(const char *link_name)
{
_gxio_mpipe_link_name_t name;
gxio_mpipe_context_t *context = _gxio_get_link_context();
if (!context)
return GXIO_ERR_NO_DEVICE;
if (strscpy(name.name, link_name, sizeof(name.name)) == 0)
return GXIO_ERR_NO_DEVICE;
return gxio_mpipe_info_instance_aux(context, name);
}
int gxio_mpipe_link_enumerate_mac(int idx, char *link_name, uint8_t *link_mac)
{
int rv;
_gxio_mpipe_link_name_t name;
_gxio_mpipe_link_mac_t mac;
gxio_mpipe_context_t *context = _gxio_get_link_context();
if (!context)
return GXIO_ERR_NO_DEVICE;
rv = gxio_mpipe_info_enumerate_aux(context, idx, &name, &mac);
if (rv >= 0) {
if (strscpy(link_name, name.name, sizeof(name.name)) == 0)
return GXIO_ERR_INVAL_MEMORY_SIZE;
memcpy(link_mac, mac.mac, sizeof(mac.mac));
}
return rv;
}
EXPORT_SYMBOL_GPL(gxio_mpipe_link_enumerate_mac);
int gxio_mpipe_link_open(gxio_mpipe_link_t *link,
gxio_mpipe_context_t *context, const char *link_name,
unsigned int flags)
{
_gxio_mpipe_link_name_t name;
int rv;
if (strscpy(name.name, link_name, sizeof(name.name)) == 0)
return GXIO_ERR_NO_DEVICE;
rv = gxio_mpipe_link_open_aux(context, name, flags);
if (rv < 0)
return rv;
link->context = context;
link->channel = rv >> 8;
link->mac = rv & 0xFF;
return 0;
}
EXPORT_SYMBOL_GPL(gxio_mpipe_link_open);
int gxio_mpipe_link_close(gxio_mpipe_link_t *link)
{
return gxio_mpipe_link_close_aux(link->context, link->mac);
}
EXPORT_SYMBOL_GPL(gxio_mpipe_link_close);
int gxio_mpipe_link_set_attr(gxio_mpipe_link_t *link, uint32_t attr,
int64_t val)
{
return gxio_mpipe_link_set_attr_aux(link->context, link->mac, attr,
val);
}
EXPORT_SYMBOL_GPL(gxio_mpipe_link_set_attr);

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/*
* Copyright 2012 Tilera Corporation. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, version 2.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
* NON INFRINGEMENT. See the GNU General Public License for
* more details.
*/
/*
* Implementation of trio gxio calls.
*/
#include <linux/errno.h>
#include <linux/io.h>
#include <linux/module.h>
#include <gxio/trio.h>
#include <gxio/iorpc_globals.h>
#include <gxio/iorpc_trio.h>
#include <gxio/kiorpc.h>
int gxio_trio_init(gxio_trio_context_t *context, unsigned int trio_index)
{
char file[32];
int fd;
snprintf(file, sizeof(file), "trio/%d/iorpc", trio_index);
fd = hv_dev_open((HV_VirtAddr) file, 0);
if (fd < 0) {
context->fd = -1;
if (fd >= GXIO_ERR_MIN && fd <= GXIO_ERR_MAX)
return fd;
else
return -ENODEV;
}
context->fd = fd;
return 0;
}
EXPORT_SYMBOL_GPL(gxio_trio_init);

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/*
* Copyright 2013 Tilera Corporation. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, version 2.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
* NON INFRINGEMENT. See the GNU General Public License for
* more details.
*/
/*
* Implementation of UART gxio calls.
*/
#include <linux/io.h>
#include <linux/errno.h>
#include <linux/module.h>
#include <gxio/uart.h>
#include <gxio/iorpc_globals.h>
#include <gxio/iorpc_uart.h>
#include <gxio/kiorpc.h>
int gxio_uart_init(gxio_uart_context_t *context, int uart_index)
{
char file[32];
int fd;
snprintf(file, sizeof(file), "uart/%d/iorpc", uart_index);
fd = hv_dev_open((HV_VirtAddr) file, 0);
if (fd < 0) {
if (fd >= GXIO_ERR_MIN && fd <= GXIO_ERR_MAX)
return fd;
else
return -ENODEV;
}
context->fd = fd;
/* Map in the MMIO space. */
context->mmio_base = (void __force *)
iorpc_ioremap(fd, HV_UART_MMIO_OFFSET, HV_UART_MMIO_SIZE);
if (context->mmio_base == NULL) {
hv_dev_close(context->fd);
context->fd = -1;
return -ENODEV;
}
return 0;
}
EXPORT_SYMBOL_GPL(gxio_uart_init);
int gxio_uart_destroy(gxio_uart_context_t *context)
{
iounmap((void __force __iomem *)(context->mmio_base));
hv_dev_close(context->fd);
context->mmio_base = NULL;
context->fd = -1;
return 0;
}
EXPORT_SYMBOL_GPL(gxio_uart_destroy);
/* UART register write wrapper. */
void gxio_uart_write(gxio_uart_context_t *context, uint64_t offset,
uint64_t word)
{
__gxio_mmio_write(context->mmio_base + offset, word);
}
EXPORT_SYMBOL_GPL(gxio_uart_write);
/* UART register read wrapper. */
uint64_t gxio_uart_read(gxio_uart_context_t *context, uint64_t offset)
{
return __gxio_mmio_read(context->mmio_base + offset);
}
EXPORT_SYMBOL_GPL(gxio_uart_read);

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/*
* Copyright 2012 Tilera Corporation. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, version 2.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
* NON INFRINGEMENT. See the GNU General Public License for
* more details.
*/
/*
*
* Implementation of USB gxio calls.
*/
#include <linux/io.h>
#include <linux/errno.h>
#include <linux/module.h>
#include <gxio/iorpc_globals.h>
#include <gxio/iorpc_usb_host.h>
#include <gxio/kiorpc.h>
#include <gxio/usb_host.h>
int gxio_usb_host_init(gxio_usb_host_context_t *context, int usb_index,
int is_ehci)
{
char file[32];
int fd;
if (is_ehci)
snprintf(file, sizeof(file), "usb_host/%d/iorpc/ehci",
usb_index);
else
snprintf(file, sizeof(file), "usb_host/%d/iorpc/ohci",
usb_index);
fd = hv_dev_open((HV_VirtAddr) file, 0);
if (fd < 0) {
if (fd >= GXIO_ERR_MIN && fd <= GXIO_ERR_MAX)
return fd;
else
return -ENODEV;
}
context->fd = fd;
// Map in the MMIO space.
context->mmio_base =
(void __force *)iorpc_ioremap(fd, 0, HV_USB_HOST_MMIO_SIZE);
if (context->mmio_base == NULL) {
hv_dev_close(context->fd);
return -ENODEV;
}
return 0;
}
EXPORT_SYMBOL_GPL(gxio_usb_host_init);
int gxio_usb_host_destroy(gxio_usb_host_context_t *context)
{
iounmap((void __force __iomem *)(context->mmio_base));
hv_dev_close(context->fd);
context->mmio_base = NULL;
context->fd = -1;
return 0;
}
EXPORT_SYMBOL_GPL(gxio_usb_host_destroy);
void *gxio_usb_host_get_reg_start(gxio_usb_host_context_t *context)
{
return context->mmio_base;
}
EXPORT_SYMBOL_GPL(gxio_usb_host_get_reg_start);
size_t gxio_usb_host_get_reg_len(gxio_usb_host_context_t *context)
{
return HV_USB_HOST_MMIO_SIZE;
}
EXPORT_SYMBOL_GPL(gxio_usb_host_get_reg_len);