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-rw-r--r--linux/drm_memory_debug.c463
1 files changed, 463 insertions, 0 deletions
diff --git a/linux/drm_memory_debug.c b/linux/drm_memory_debug.c
new file mode 100644
index 00000000..a15a304d
--- /dev/null
+++ b/linux/drm_memory_debug.c
@@ -0,0 +1,463 @@
+/**
+ * \file drm_memory.h
+ * Memory management wrappers for DRM.
+ *
+ * \author Rickard E. (Rik) Faith <faith@valinux.com>
+ * \author Gareth Hughes <gareth@valinux.com>
+ */
+
+/*
+ * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
+ * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "drm_headers.h"
+
+#define DRM_MEM_ERROR(area, fmt, arg...) \
+ printk(KERN_ERR "[" DRM_NAME ":%s:%s] *ERROR* " fmt , __FUNCTION__, \
+ drm_memory_debug_mem_stats[area].name , ##arg)
+
+
+typedef struct drm_mem_stats {
+ const char *name;
+ int succeed_count;
+ int free_count;
+ int fail_count;
+ unsigned long bytes_allocated;
+ unsigned long bytes_freed;
+} drm_mem_stats_t;
+
+static spinlock_t drm_memory_debug_mem_lock = SPIN_LOCK_UNLOCKED;
+static unsigned long drm_memory_debug_ram_available = 0; /* In pages */
+static unsigned long drm_memory_debug_ram_used = 0;
+static drm_mem_stats_t drm_memory_debug_mem_stats[] = {
+ [DRM_MEM_DMA] = { "dmabufs" },
+ [DRM_MEM_SAREA] = { "sareas" },
+ [DRM_MEM_DRIVER] = { "driver" },
+ [DRM_MEM_MAGIC] = { "magic" },
+ [DRM_MEM_IOCTLS] = { "ioctltab" },
+ [DRM_MEM_MAPS] = { "maplist" },
+ [DRM_MEM_VMAS] = { "vmalist" },
+ [DRM_MEM_BUFS] = { "buflist" },
+ [DRM_MEM_SEGS] = { "seglist" },
+ [DRM_MEM_PAGES] = { "pagelist" },
+ [DRM_MEM_FILES] = { "files" },
+ [DRM_MEM_QUEUES] = { "queues" },
+ [DRM_MEM_CMDS] = { "commands" },
+ [DRM_MEM_MAPPINGS] = { "mappings" },
+ [DRM_MEM_BUFLISTS] = { "buflists" },
+ [DRM_MEM_AGPLISTS] = { "agplist" },
+ [DRM_MEM_SGLISTS] = { "sglist" },
+ [DRM_MEM_TOTALAGP] = { "totalagp" },
+ [DRM_MEM_BOUNDAGP] = { "boundagp" },
+ [DRM_MEM_CTXBITMAP] = { "ctxbitmap"},
+ [DRM_MEM_CTXLIST] = { "ctxlist" },
+ [DRM_MEM_STUB] = { "stub" },
+ { NULL, 0, } /* Last entry must be null */
+};
+
+void drm_memory_debug_mem_init(void)
+{
+ drm_mem_stats_t *mem;
+ struct sysinfo si;
+
+ for (mem = drm_memory_debug_mem_stats; mem->name; ++mem) {
+ mem->succeed_count = 0;
+ mem->free_count = 0;
+ mem->fail_count = 0;
+ mem->bytes_allocated = 0;
+ mem->bytes_freed = 0;
+ }
+
+ si_meminfo(&si);
+ drm_memory_debug_ram_available = si.totalram;
+ drm_memory_debug_ram_used = 0;
+}
+
+/* drm_mem_info is called whenever a process reads /dev/drm/mem. */
+
+static int drm_memory_debug__mem_info(char *buf, char **start, off_t offset,
+ int request, int *eof, void *data)
+{
+ drm_mem_stats_t *pt;
+ int len = 0;
+
+ if (offset > DRM_PROC_LIMIT) {
+ *eof = 1;
+ return 0;
+ }
+
+ *eof = 0;
+ *start = &buf[offset];
+
+ DRM_PROC_PRINT(" total counts "
+ " | outstanding \n");
+ DRM_PROC_PRINT("type alloc freed fail bytes freed"
+ " | allocs bytes\n\n");
+ DRM_PROC_PRINT("%-9.9s %5d %5d %4d %10lu kB |\n",
+ "system", 0, 0, 0,
+ drm_memory_debug_ram_available << (PAGE_SHIFT - 10));
+ DRM_PROC_PRINT("%-9.9s %5d %5d %4d %10lu kB |\n",
+ "locked", 0, 0, 0, drm_memory_debug_ram_used >> 10);
+ DRM_PROC_PRINT("\n");
+ for (pt = drm_memory_debug_mem_stats; pt->name; pt++) {
+ DRM_PROC_PRINT("%-9.9s %5d %5d %4d %10lu %10lu | %6d %10ld\n",
+ pt->name,
+ pt->succeed_count,
+ pt->free_count,
+ pt->fail_count,
+ pt->bytes_allocated,
+ pt->bytes_freed,
+ pt->succeed_count - pt->free_count,
+ (long)pt->bytes_allocated
+ - (long)pt->bytes_freed);
+ }
+
+ if (len > request + offset) return request;
+ *eof = 1;
+ return len - offset;
+}
+
+int drm_memory_debug_mem_info(char *buf, char **start, off_t offset,
+ int len, int *eof, void *data)
+{
+ int ret;
+
+ spin_lock(&drm_memory_debug_mem_lock);
+ ret = drm_memory_debug__mem_info(buf, start, offset, len, eof, data);
+ spin_unlock(&drm_memory_debug_mem_lock);
+ return ret;
+}
+
+void *drm_memory_debug_alloc(size_t size, int area)
+{
+ void *pt;
+
+ if (!size) {
+ DRM_MEM_ERROR(area, "Allocating 0 bytes\n");
+ return NULL;
+ }
+
+ if (!(pt = kmalloc(size, GFP_KERNEL))) {
+ spin_lock(&drm_memory_debug_mem_lock);
+ ++drm_memory_debug_mem_stats[area].fail_count;
+ spin_unlock(&drm_memory_debug_mem_lock);
+ return NULL;
+ }
+ spin_lock(&drm_memory_debug_mem_lock);
+ ++drm_memory_debug_mem_stats[area].succeed_count;
+ drm_memory_debug_mem_stats[area].bytes_allocated += size;
+ spin_unlock(&drm_memory_debug_mem_lock);
+ return pt;
+}
+
+void *drm_memory_debug_calloc(size_t nmemb, size_t size, int area)
+{
+ void *addr;
+
+ addr = drm_memory_debug_alloc(nmemb * size, area);
+ if (addr != NULL)
+ memset((void *)addr, 0, size * nmemb);
+
+ return addr;
+}
+
+void *drm_memory_debug_realloc(void *oldpt, size_t oldsize, size_t size, int area)
+{
+ void *pt;
+
+ if (!(pt = drm_memory_debug_alloc(size, area))) return NULL;
+ if (oldpt && oldsize) {
+ memcpy(pt, oldpt, oldsize);
+ drm_memory_debug_free(oldpt, oldsize, area);
+ }
+ return pt;
+}
+
+void drm_memory_debug_free(void *pt, size_t size, int area)
+{
+ int alloc_count;
+ int free_count;
+
+ if (!pt) DRM_MEM_ERROR(area, "Attempt to free NULL pointer\n");
+ else kfree(pt);
+ spin_lock(&drm_memory_debug_mem_lock);
+ drm_memory_debug_mem_stats[area].bytes_freed += size;
+ free_count = ++drm_memory_debug_mem_stats[area].free_count;
+ alloc_count = drm_memory_debug_mem_stats[area].succeed_count;
+ spin_unlock(&drm_memory_debug_mem_lock);
+ if (free_count > alloc_count) {
+ DRM_MEM_ERROR(area, "Excess frees: %d frees, %d allocs\n",
+ free_count, alloc_count);
+ }
+}
+
+unsigned long drm_debug_alloc_pages(int order, int area)
+{
+ unsigned long address;
+ unsigned long bytes = PAGE_SIZE << order;
+ unsigned long addr;
+ unsigned int sz;
+
+ spin_lock(&drm_memory_debug_mem_lock);
+ if ((drm_memory_debug_ram_used >> PAGE_SHIFT)
+ > (DRM_RAM_PERCENT * drm_memory_debug_ram_available) / 100) {
+ spin_unlock(&drm_memory_debug_mem_lock);
+ return 0;
+ }
+ spin_unlock(&drm_memory_debug_mem_lock);
+
+ address = __get_free_pages(GFP_KERNEL, order);
+ if (!address) {
+ spin_lock(&drm_memory_debug_mem_lock);
+ ++drm_memory_debug_mem_stats[area].fail_count;
+ spin_unlock(&drm_memory_debug_mem_lock);
+ return 0;
+ }
+ spin_lock(&drm_memory_debug_mem_lock);
+ ++drm_memory_debug_mem_stats[area].succeed_count;
+ drm_memory_debug_mem_stats[area].bytes_allocated += bytes;
+ drm_memory_debug_ram_used += bytes;
+ spin_unlock(&drm_memory_debug_mem_lock);
+
+
+ /* Zero outside the lock */
+ memset((void *)address, 0, bytes);
+
+ /* Reserve */
+ for (addr = address, sz = bytes;
+ sz > 0;
+ addr += PAGE_SIZE, sz -= PAGE_SIZE) {
+ SetPageReserved(virt_to_page(addr));
+ }
+
+ return address;
+}
+
+void drm_memory_debug_free_pages(unsigned long address, int order, int area)
+{
+ unsigned long bytes = PAGE_SIZE << order;
+ int alloc_count;
+ int free_count;
+ unsigned long addr;
+ unsigned int sz;
+
+ if (!address) {
+ DRM_MEM_ERROR(area, "Attempt to free address 0\n");
+ } else {
+ /* Unreserve */
+ for (addr = address, sz = bytes;
+ sz > 0;
+ addr += PAGE_SIZE, sz -= PAGE_SIZE) {
+ ClearPageReserved(virt_to_page(addr));
+ }
+ free_pages(address, order);
+ }
+
+ spin_lock(&drm_memory_debug_mem_lock);
+ free_count = ++drm_memory_debug_mem_stats[area].free_count;
+ alloc_count = drm_memory_debug_mem_stats[area].succeed_count;
+ drm_memory_debug_mem_stats[area].bytes_freed += bytes;
+ drm_memory_debug_ram_used -= bytes;
+ spin_unlock(&drm_memory_debug_mem_lock);
+ if (free_count > alloc_count) {
+ DRM_MEM_ERROR(area,
+ "Excess frees: %d frees, %d allocs\n",
+ free_count, alloc_count);
+ }
+}
+
+void *drm_memory_debug_ioremap(unsigned long offset, unsigned long size, drm_device_t *dev)
+{
+ void *pt;
+
+ if (!size) {
+ DRM_MEM_ERROR(DRM_MEM_MAPPINGS,
+ "Mapping 0 bytes at 0x%08lx\n", offset);
+ return NULL;
+ }
+
+ if (!(pt = drm_ioremap(offset, size, dev))) {
+ spin_lock(&drm_memory_debug_mem_lock);
+ ++drm_memory_debug_mem_stats[DRM_MEM_MAPPINGS].fail_count;
+ spin_unlock(&drm_memory_debug_mem_lock);
+ return NULL;
+ }
+ spin_lock(&drm_memory_debug_mem_lock);
+ ++drm_memory_debug_mem_stats[DRM_MEM_MAPPINGS].succeed_count;
+ drm_memory_debug_mem_stats[DRM_MEM_MAPPINGS].bytes_allocated += size;
+ spin_unlock(&drm_memory_debug_mem_lock);
+ return pt;
+}
+
+void *drm_memory_ioremap_nocache(unsigned long offset, unsigned long size, drm_device_t *dev)
+{
+ void *pt;
+
+ if (!size) {
+ DRM_MEM_ERROR(DRM_MEM_MAPPINGS,
+ "Mapping 0 bytes at 0x%08lx\n", offset);
+ return NULL;
+ }
+
+ if (!(pt = drm_ioremap_nocache(offset, size, dev))) {
+ spin_lock(&drm_memory_debug_mem_lock);
+ ++drm_memory_debug_mem_stats[DRM_MEM_MAPPINGS].fail_count;
+ spin_unlock(&drm_memory_debug_mem_lock);
+ return NULL;
+ }
+ spin_lock(&drm_memory_debug_mem_lock);
+ ++drm_memory_debug_mem_stats[DRM_MEM_MAPPINGS].succeed_count;
+ drm_memory_debug_mem_stats[DRM_MEM_MAPPINGS].bytes_allocated += size;
+ spin_unlock(&drm_memory_debug_mem_lock);
+ return pt;
+}
+
+void drm_memory_debug_ioremapfree(void *pt, unsigned long size, drm_device_t *dev)
+{
+ int alloc_count;
+ int free_count;
+
+ if (!pt)
+ DRM_MEM_ERROR(DRM_MEM_MAPPINGS,
+ "Attempt to free NULL pointer\n");
+ else
+ drm_ioremapfree(pt, size, dev);
+
+ spin_lock(&drm_memory_debug_mem_lock);
+ drm_memory_debug_mem_stats[DRM_MEM_MAPPINGS].bytes_freed += size;
+ free_count = ++drm_memory_debug_mem_stats[DRM_MEM_MAPPINGS].free_count;
+ alloc_count = drm_memory_debug_mem_stats[DRM_MEM_MAPPINGS].succeed_count;
+ spin_unlock(&drm_memory_debug_mem_lock);
+ if (free_count > alloc_count) {
+ DRM_MEM_ERROR(DRM_MEM_MAPPINGS,
+ "Excess frees: %d frees, %d allocs\n",
+ free_count, alloc_count);
+ }
+}
+
+#if __OS_HAS_AGP
+
+DRM_AGP_MEM *drm_memory_debug_alloc_agp(int pages, u32 type)
+{
+ DRM_AGP_MEM *handle;
+
+ if (!pages) {
+ DRM_MEM_ERROR(DRM_MEM_TOTALAGP, "Allocating 0 pages\n");
+ return NULL;
+ }
+
+ if ((handle = drm_memory_agp_allocate_memory(pages, type))) {
+ spin_lock(&drm_memory_debug_mem_lock);
+ ++drm_memory_debug_mem_stats[DRM_MEM_TOTALAGP].succeed_count;
+ drm_memory_debug_mem_stats[DRM_MEM_TOTALAGP].bytes_allocated
+ += pages << PAGE_SHIFT;
+ spin_unlock(&drm_memory_debug_mem_lock);
+ return handle;
+ }
+ spin_lock(&drm_memory_debug_mem_lock);
+ ++drm_memory_debug_mem_stats[DRM_MEM_TOTALAGP].fail_count;
+ spin_unlock(&drm_memory_debug_mem_lock);
+ return NULL;
+}
+
+int drm_memory_debug_free_agp(DRM_AGP_MEM *handle, int pages)
+{
+ int alloc_count;
+ int free_count;
+ int retval = -EINVAL;
+
+ if (!handle) {
+ DRM_MEM_ERROR(DRM_MEM_TOTALAGP,
+ "Attempt to free NULL AGP handle\n");
+ return retval;
+ }
+
+ if (drm_memory_agp_free_memory(handle)) {
+ spin_lock(&drm_memory_debug_mem_lock);
+ free_count = ++drm_memory_debug_mem_stats[DRM_MEM_TOTALAGP].free_count;
+ alloc_count = drm_memory_debug_mem_stats[DRM_MEM_TOTALAGP].succeed_count;
+ drm_memory_debug_mem_stats[DRM_MEM_TOTALAGP].bytes_freed
+ += pages << PAGE_SHIFT;
+ spin_unlock(&drm_memory_debug_mem_lock);
+ if (free_count > alloc_count) {
+ DRM_MEM_ERROR(DRM_MEM_TOTALAGP,
+ "Excess frees: %d frees, %d allocs\n",
+ free_count, alloc_count);
+ }
+ return 0;
+ }
+ return retval;
+}
+
+int drm_memory_debug_bind_agp(DRM_AGP_MEM *handle, unsigned int start)
+{
+ int retcode = -EINVAL;
+
+ if (!handle) {
+ DRM_MEM_ERROR(DRM_MEM_BOUNDAGP,
+ "Attempt to bind NULL AGP handle\n");
+ return retcode;
+ }
+
+ if (!(retcode = drm_memory_agp_bind_memory(handle, start))) {
+ spin_lock(&drm_memory_debug_mem_lock);
+ ++drm_memory_debug_mem_stats[DRM_MEM_BOUNDAGP].succeed_count;
+ drm_memory_debug_mem_stats[DRM_MEM_BOUNDAGP].bytes_allocated
+ += handle->page_count << PAGE_SHIFT;
+ spin_unlock(&drm_memory_debug_mem_lock);
+ return retcode;
+ }
+ spin_lock(&drm_memory_debug_mem_lock);
+ ++drm_memory_debug_mem_stats[DRM_MEM_BOUNDAGP].fail_count;
+ spin_unlock(&drm_memory_debug_mem_lock);
+ return retcode;
+}
+
+int drm_memory_debug_unbind_agp(DRM_AGP_MEM *handle)
+{
+ int alloc_count;
+ int free_count;
+ int retcode = -EINVAL;
+
+ if (!handle) {
+ DRM_MEM_ERROR(DRM_MEM_BOUNDAGP,
+ "Attempt to unbind NULL AGP handle\n");
+ return retcode;
+ }
+
+ if ((retcode = drm_memory_agp_unbind_memory(handle))) return retcode;
+ spin_lock(&drm_memory_debug_mem_lock);
+ free_count = ++drm_memory_debug_mem_stats[DRM_MEM_BOUNDAGP].free_count;
+ alloc_count = drm_memory_debug_mem_stats[DRM_MEM_BOUNDAGP].succeed_count;
+ drm_memory_debug_mem_stats[DRM_MEM_BOUNDAGP].bytes_freed
+ += handle->page_count << PAGE_SHIFT;
+ spin_unlock(&drm_memory_debug_mem_lock);
+ if (free_count > alloc_count) {
+ DRM_MEM_ERROR(DRM_MEM_BOUNDAGP,
+ "Excess frees: %d frees, %d allocs\n",
+ free_count, alloc_count);
+ }
+ return retcode;
+}
+#endif
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