You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
449 lines
12 KiB
449 lines
12 KiB
/**
|
|
* \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 <linux/config.h>
|
|
#include "drmP.h"
|
|
|
|
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 DEFINE_SPINLOCK(DRM(mem_lock));
|
|
static unsigned long DRM(ram_available) = 0; /* In pages */
|
|
static unsigned long DRM(ram_used) = 0;
|
|
static drm_mem_stats_t DRM(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(mem_init) (void) {
|
|
drm_mem_stats_t *mem;
|
|
struct sysinfo si;
|
|
|
|
for (mem = DRM(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(ram_available) = si.totalram;
|
|
DRM(ram_used) = 0;
|
|
}
|
|
|
|
/* drm_mem_info is called whenever a process reads /dev/drm/mem. */
|
|
|
|
static int DRM(_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(ram_available) << (PAGE_SHIFT - 10));
|
|
DRM_PROC_PRINT("%-9.9s %5d %5d %4d %10lu kB |\n",
|
|
"locked", 0, 0, 0, DRM(ram_used) >> 10);
|
|
DRM_PROC_PRINT("\n");
|
|
for (pt = DRM(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(mem_info) (char *buf, char **start, off_t offset,
|
|
int len, int *eof, void *data) {
|
|
int ret;
|
|
|
|
spin_lock(&DRM(mem_lock));
|
|
ret = DRM(_mem_info) (buf, start, offset, len, eof, data);
|
|
spin_unlock(&DRM(mem_lock));
|
|
return ret;
|
|
}
|
|
|
|
void *DRM(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(mem_lock));
|
|
++DRM(mem_stats)[area].fail_count;
|
|
spin_unlock(&DRM(mem_lock));
|
|
return NULL;
|
|
}
|
|
spin_lock(&DRM(mem_lock));
|
|
++DRM(mem_stats)[area].succeed_count;
|
|
DRM(mem_stats)[area].bytes_allocated += size;
|
|
spin_unlock(&DRM(mem_lock));
|
|
return pt;
|
|
}
|
|
|
|
void *DRM(calloc) (size_t nmemb, size_t size, int area) {
|
|
void *addr;
|
|
|
|
addr = DRM(alloc) (nmemb * size, area);
|
|
if (addr != NULL)
|
|
memset((void *)addr, 0, size * nmemb);
|
|
|
|
return addr;
|
|
}
|
|
|
|
void *DRM(realloc) (void *oldpt, size_t oldsize, size_t size, int area) {
|
|
void *pt;
|
|
|
|
if (!(pt = DRM(alloc) (size, area)))
|
|
return NULL;
|
|
if (oldpt && oldsize) {
|
|
memcpy(pt, oldpt, oldsize);
|
|
DRM(free) (oldpt, oldsize, area);
|
|
}
|
|
return pt;
|
|
}
|
|
|
|
void DRM(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(mem_lock));
|
|
DRM(mem_stats)[area].bytes_freed += size;
|
|
free_count = ++DRM(mem_stats)[area].free_count;
|
|
alloc_count = DRM(mem_stats)[area].succeed_count;
|
|
spin_unlock(&DRM(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(alloc_pages) (int order, int area) {
|
|
unsigned long address;
|
|
unsigned long bytes = PAGE_SIZE << order;
|
|
unsigned long addr;
|
|
unsigned int sz;
|
|
|
|
spin_lock(&DRM(mem_lock));
|
|
if ((DRM(ram_used) >> PAGE_SHIFT)
|
|
> (DRM_RAM_PERCENT * DRM(ram_available)) / 100) {
|
|
spin_unlock(&DRM(mem_lock));
|
|
return 0;
|
|
}
|
|
spin_unlock(&DRM(mem_lock));
|
|
|
|
address = __get_free_pages(GFP_KERNEL, order);
|
|
if (!address) {
|
|
spin_lock(&DRM(mem_lock));
|
|
++DRM(mem_stats)[area].fail_count;
|
|
spin_unlock(&DRM(mem_lock));
|
|
return 0;
|
|
}
|
|
spin_lock(&DRM(mem_lock));
|
|
++DRM(mem_stats)[area].succeed_count;
|
|
DRM(mem_stats)[area].bytes_allocated += bytes;
|
|
DRM(ram_used) += bytes;
|
|
spin_unlock(&DRM(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(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(mem_lock));
|
|
free_count = ++DRM(mem_stats)[area].free_count;
|
|
alloc_count = DRM(mem_stats)[area].succeed_count;
|
|
DRM(mem_stats)[area].bytes_freed += bytes;
|
|
DRM(ram_used) -= bytes;
|
|
spin_unlock(&DRM(mem_lock));
|
|
if (free_count > alloc_count) {
|
|
DRM_MEM_ERROR(area,
|
|
"Excess frees: %d frees, %d allocs\n",
|
|
free_count, alloc_count);
|
|
}
|
|
}
|
|
|
|
void *DRM(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(mem_lock));
|
|
++DRM(mem_stats)[DRM_MEM_MAPPINGS].fail_count;
|
|
spin_unlock(&DRM(mem_lock));
|
|
return NULL;
|
|
}
|
|
spin_lock(&DRM(mem_lock));
|
|
++DRM(mem_stats)[DRM_MEM_MAPPINGS].succeed_count;
|
|
DRM(mem_stats)[DRM_MEM_MAPPINGS].bytes_allocated += size;
|
|
spin_unlock(&DRM(mem_lock));
|
|
return pt;
|
|
}
|
|
|
|
void *DRM(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(mem_lock));
|
|
++DRM(mem_stats)[DRM_MEM_MAPPINGS].fail_count;
|
|
spin_unlock(&DRM(mem_lock));
|
|
return NULL;
|
|
}
|
|
spin_lock(&DRM(mem_lock));
|
|
++DRM(mem_stats)[DRM_MEM_MAPPINGS].succeed_count;
|
|
DRM(mem_stats)[DRM_MEM_MAPPINGS].bytes_allocated += size;
|
|
spin_unlock(&DRM(mem_lock));
|
|
return pt;
|
|
}
|
|
|
|
void DRM(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(mem_lock));
|
|
DRM(mem_stats)[DRM_MEM_MAPPINGS].bytes_freed += size;
|
|
free_count = ++DRM(mem_stats)[DRM_MEM_MAPPINGS].free_count;
|
|
alloc_count = DRM(mem_stats)[DRM_MEM_MAPPINGS].succeed_count;
|
|
spin_unlock(&DRM(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(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(agp_allocate_memory) (pages, type))) {
|
|
spin_lock(&DRM(mem_lock));
|
|
++DRM(mem_stats)[DRM_MEM_TOTALAGP].succeed_count;
|
|
DRM(mem_stats)[DRM_MEM_TOTALAGP].bytes_allocated
|
|
+= pages << PAGE_SHIFT;
|
|
spin_unlock(&DRM(mem_lock));
|
|
return handle;
|
|
}
|
|
spin_lock(&DRM(mem_lock));
|
|
++DRM(mem_stats)[DRM_MEM_TOTALAGP].fail_count;
|
|
spin_unlock(&DRM(mem_lock));
|
|
return NULL;
|
|
}
|
|
|
|
int DRM(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(agp_free_memory) (handle)) {
|
|
spin_lock(&DRM(mem_lock));
|
|
free_count = ++DRM(mem_stats)[DRM_MEM_TOTALAGP].free_count;
|
|
alloc_count = DRM(mem_stats)[DRM_MEM_TOTALAGP].succeed_count;
|
|
DRM(mem_stats)[DRM_MEM_TOTALAGP].bytes_freed
|
|
+= pages << PAGE_SHIFT;
|
|
spin_unlock(&DRM(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(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(agp_bind_memory) (handle, start))) {
|
|
spin_lock(&DRM(mem_lock));
|
|
++DRM(mem_stats)[DRM_MEM_BOUNDAGP].succeed_count;
|
|
DRM(mem_stats)[DRM_MEM_BOUNDAGP].bytes_allocated
|
|
+= handle->page_count << PAGE_SHIFT;
|
|
spin_unlock(&DRM(mem_lock));
|
|
return retcode;
|
|
}
|
|
spin_lock(&DRM(mem_lock));
|
|
++DRM(mem_stats)[DRM_MEM_BOUNDAGP].fail_count;
|
|
spin_unlock(&DRM(mem_lock));
|
|
return retcode;
|
|
}
|
|
|
|
int DRM(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(agp_unbind_memory) (handle)))
|
|
return retcode;
|
|
spin_lock(&DRM(mem_lock));
|
|
free_count = ++DRM(mem_stats)[DRM_MEM_BOUNDAGP].free_count;
|
|
alloc_count = DRM(mem_stats)[DRM_MEM_BOUNDAGP].succeed_count;
|
|
DRM(mem_stats)[DRM_MEM_BOUNDAGP].bytes_freed
|
|
+= handle->page_count << PAGE_SHIFT;
|
|
spin_unlock(&DRM(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
|
|
|