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https://github.com/AetherDroid/android_kernel_samsung_on5xelte.git
synced 2025-09-09 01:28:05 -04:00
Fixed MTP to work with TWRP
This commit is contained in:
awab228
commit
f6dfaef42e
50820 changed files with 20846062 additions and 0 deletions
232
drivers/iommu/exynos-iommu-log.c
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232
drivers/iommu/exynos-iommu-log.c
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/*
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* Copyright (c) 2014 Samsung Electronics Co., Ltd.
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* http://www.samsung.com
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*
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* Data structure definition for Exynos IOMMU driver
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/kernel.h>
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#include <linux/slab.h>
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#include <linux/vmalloc.h>
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#include <linux/debugfs.h>
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#include <linux/dma-mapping.h>
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#include "exynos-iommu-log.h"
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int exynos_iommu_init_event_log(struct exynos_iommu_event_log *log,
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unsigned int log_len)
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{
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struct page *page;
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int i, order;
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size_t fit_size = PAGE_ALIGN(sizeof(*(log->log)) * log_len);
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int fit_pages = fit_size / PAGE_SIZE;
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/* log_len must be power of 2 */
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BUG_ON((log_len - 1) & log_len);
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atomic_set(&log->index, 0);
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order = get_order(fit_size);
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page = alloc_pages(GFP_KERNEL | __GFP_ZERO, order);
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if (!page)
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return -ENOMEM;
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split_page(page, order);
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if ((1 << order) > fit_pages) {
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int extra = (1 << order) - fit_pages;
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for (i = 0; i < extra; i++)
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__free_pages(page + fit_pages + i, 0);
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}
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log->log = page_address(page);
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log->log_len = log_len;
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return 0;
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}
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static const char * const sysmmu_event_name[] = {
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"n/a", /* not an event */
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"ENABLE",
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"DISABLE",
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"TLB_INV_RANGE",
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"TLB_INV_VPN",
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"TLB_INV_ALL",
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"FLPD_FLUSH",
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"DF",
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"DF_UNLOCK",
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"DF_UNLOCK_ALL",
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"PBLMM",
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"PBSET",
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"BLOCK",
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"UNBLOCK",
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#ifdef CONFIG_PM_RUNTIME
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"POWERON",
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"POWEROFF",
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#endif
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"IOMMU_ATTACH",
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"IOMMU_DETACH",
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"IOMMU_MAP",
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"IOMMU_UNMAP",
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"IOMMU_ALLOCSLPD",
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"IOMMU_FREESLPD",
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"IOVMM_MAP",
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"IOVMM_UNMAP"
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};
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static void exynos_iommu_debug_log_show(struct seq_file *s,
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struct sysmmu_event_log *log)
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{
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struct timeval tv = ktime_to_timeval(log->timestamp);
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if (log->event == EVENT_SYSMMU_NONE)
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return;
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seq_printf(s, "%06ld.%06ld: %15s", tv.tv_sec, tv.tv_usec,
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sysmmu_event_name[log->event]);
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switch (log->event) {
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case EVENT_SYSMMU_ENABLE:
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case EVENT_SYSMMU_DISABLE:
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case EVENT_SYSMMU_TLB_INV_ALL:
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case EVENT_SYSMMU_DF_UNLOCK_ALL:
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case EVENT_SYSMMU_BLOCK:
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case EVENT_SYSMMU_UNBLOCK:
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#ifdef CONFIG_PM_RUNTIME
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case EVENT_SYSMMU_POWERON:
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case EVENT_SYSMMU_POWEROFF:
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#endif
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seq_puts(s, "\n");
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break;
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case EVENT_SYSMMU_TLB_INV_VPN:
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case EVENT_SYSMMU_FLPD_FLUSH:
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case EVENT_SYSMMU_DF:
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case EVENT_SYSMMU_DF_UNLOCK:
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case EVENT_SYSMMU_IOMMU_ALLOCSLPD:
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case EVENT_SYSMMU_IOMMU_FREESLPD:
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seq_printf(s, " @ %#010x\n", log->eventdata.addr);
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break;
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case EVENT_SYSMMU_TLB_INV_RANGE:
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case EVENT_SYSMMU_IOMMU_UNMAP:
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case EVENT_SYSMMU_IOVMM_UNMAP:
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seq_printf(s, " @ [%#010x, %#010x)\n",
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log->eventdata.range.start,
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log->eventdata.range.end);
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break;
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case EVENT_SYSMMU_PBLMM:
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seq_printf(s, " -> LMM %u, BUF_NUM %u\n",
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log->eventdata.pblmm.lmm,
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log->eventdata.pblmm.buf_num);
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break;
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case EVENT_SYSMMU_PBSET:
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seq_printf(s, " with %#010x, [%#010x, %#010x]\n",
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log->eventdata.pbset.config,
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log->eventdata.pbset.start,
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log->eventdata.pbset.end);
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break;
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case EVENT_SYSMMU_IOVMM_MAP:
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seq_printf(s, " [%#010x, %#010x(+%#x))\n",
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log->eventdata.iovmm.start,
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log->eventdata.iovmm.end,
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log->eventdata.iovmm.dummy);
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break;
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case EVENT_SYSMMU_IOMMU_MAP:
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seq_printf(s, " [%#010x, %#010x) for PFN %#x\n",
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log->eventdata.iommu.start,
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log->eventdata.iommu.end,
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log->eventdata.iommu.pfn);
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break;
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case EVENT_SYSMMU_IOMMU_ATTACH:
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case EVENT_SYSMMU_IOMMU_DETACH:
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seq_printf(s, " of %s\n", dev_name(log->eventdata.dev));
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break;
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default:
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BUG();
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}
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}
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static int exynos_iommu_debugfs_log_show(struct seq_file *s, void *unused)
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{
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struct exynos_iommu_event_log *plog = s->private;
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unsigned int index = atomic_read(&plog->index) % plog->log_len;
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unsigned int begin = index;
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do {
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exynos_iommu_debug_log_show(s, &plog->log[index++]);
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if (index == plog->log_len)
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index = 0;
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} while (index != begin);
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return 0;
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}
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static int exynos_iommu_debugfs_log_open(struct inode *inode, struct file *file)
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{
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return single_open(file, exynos_iommu_debugfs_log_show,
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inode->i_private);
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}
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#define SYSMMU_DENTRY_LOG_ROOT_NAME "eventlog"
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static struct dentry *sysmmu_debugfs_log_root;
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static struct dentry *iommu_debugfs_log_root;
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static const struct file_operations exynos_iommu_debugfs_fops = {
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.open = exynos_iommu_debugfs_log_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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};
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static void __sysmmu_add_log_to_debugfs(struct dentry *debugfs_root,
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struct dentry **debugfs_eventlog_root,
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struct exynos_iommu_event_log *log, const char *name)
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{
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if (!debugfs_root)
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return;
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if (!(*debugfs_eventlog_root)) {
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*debugfs_eventlog_root = debugfs_create_dir(
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SYSMMU_DENTRY_LOG_ROOT_NAME, debugfs_root);
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if (!(*debugfs_eventlog_root)) {
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pr_err("%s: Failed to create 'eventlog' entry\n",
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__func__);
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return;
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}
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}
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log->debugfs_root = debugfs_create_file(name, 0400,
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*debugfs_eventlog_root, log,
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&exynos_iommu_debugfs_fops);
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if (!log->debugfs_root)
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pr_err("%s: Failed to create '%s' entry of 'eventlog'\n",
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__func__, name);
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}
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void sysmmu_add_log_to_debugfs(struct dentry *debugfs_root,
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struct exynos_iommu_event_log *log, const char *name)
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{
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__sysmmu_add_log_to_debugfs(debugfs_root, &sysmmu_debugfs_log_root,
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log, name);
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}
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void iommu_add_log_to_debugfs(struct dentry *debugfs_root,
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struct exynos_iommu_event_log *log, const char *name)
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{
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__sysmmu_add_log_to_debugfs(debugfs_root, &iommu_debugfs_log_root,
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log, name);
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}
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#if defined(CONFIG_EXYNOS_IOVMM)
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static struct dentry *iovmm_debugfs_log_root;
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void iovmm_add_log_to_debugfs(struct dentry *debugfs_root,
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struct exynos_iommu_event_log *log, const char *name)
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{
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__sysmmu_add_log_to_debugfs(debugfs_root, &iovmm_debugfs_log_root,
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log, name);
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}
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#endif
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