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drm/bsd-core/drm_memory.c

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/* drm_memory.h -- Memory management wrappers for DRM -*- linux-c -*-
* Created: Thu Feb 4 14:00:34 1999 by faith@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.
*
* Authors:
* Rickard E. (Rik) Faith <faith@valinux.com>
* Gareth Hughes <gareth@valinux.com>
*/
#define __NO_VERSION__
#include "drmP.h"
#include <vm/vm.h>
#include <vm/pmap.h>
#if __REALLY_HAVE_AGP
#include <sys/agpio.h>
#endif
#define malloctype DRM(M_DRM)
/* The macros confliced in the MALLOC_DEFINE */
MALLOC_DEFINE(malloctype, "drm", "DRM Data Structures");
#undef malloctype
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 DRM_OS_SPINTYPE 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_STUB] = { "stub" },
{ NULL, 0, } /* Last entry must be null */
};
void DRM(mem_init)(void)
{
drm_mem_stats_t *mem;
DRM_OS_SPININIT(DRM(mem_lock), "drm memory");
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;
}
DRM(ram_available) = 0; /* si.totalram */
DRM(ram_used) = 0;
}
/* drm_mem_info is called whenever a process reads /dev/drm/mem. */
static int DRM(_mem_info) DRM_SYSCTL_HANDLER_ARGS
{
drm_mem_stats_t *pt;
char buf[128];
int error;
DRM_SYSCTL_PRINT(" total counts "
" | outstanding \n");
DRM_SYSCTL_PRINT("type alloc freed fail bytes freed"
" | allocs bytes\n\n");
DRM_SYSCTL_PRINT("%-9.9s %5d %5d %4d %10lu |\n",
"system", 0, 0, 0, DRM(ram_available));
DRM_SYSCTL_PRINT("%-9.9s %5d %5d %4d %10lu |\n",
"locked", 0, 0, 0, DRM(ram_used));
DRM_SYSCTL_PRINT("\n");
for (pt = DRM(mem_stats); pt->name; pt++) {
DRM_SYSCTL_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);
}
SYSCTL_OUT(req, "", 1);
return 0;
}
int DRM(mem_info) DRM_SYSCTL_HANDLER_ARGS
{
int ret;
DRM_OS_SPINLOCK(&DRM(mem_lock));
ret = DRM(_mem_info)(oidp, arg1, arg2, req);
DRM_OS_SPINUNLOCK(&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 = malloc(size, DRM(M_DRM), M_NOWAIT))) {
DRM_OS_SPINLOCK(&DRM(mem_lock));
++DRM(mem_stats)[area].fail_count;
DRM_OS_SPINUNLOCK(&DRM(mem_lock));
return NULL;
}
DRM_OS_SPINLOCK(&DRM(mem_lock));
++DRM(mem_stats)[area].succeed_count;
DRM(mem_stats)[area].bytes_allocated += size;
DRM_OS_SPINUNLOCK(&DRM(mem_lock));
return pt;
}
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;
}
char *DRM(strdup)(const char *s, int area)
{
char *pt;
int length = s ? strlen(s) : 0;
if (!(pt = DRM(alloc)(length+1, area))) return NULL;
strcpy(pt, s);
return pt;
}
void DRM(strfree)(char *s, int area)
{
unsigned int size;
if (!s) return;
size = 1 + strlen(s);
DRM(free)((void *)s, size, area);
}
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 free(pt, DRM(M_DRM));
DRM_OS_SPINLOCK(&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;
DRM_OS_SPINUNLOCK(&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)
{
vm_offset_t address;
unsigned long bytes = PAGE_SIZE << order;
address = (vm_offset_t) contigmalloc(bytes, DRM(M_DRM), M_WAITOK, 0, ~0, 1, 0);
if (!address) {
DRM_OS_SPINLOCK(&DRM(mem_lock));
++DRM(mem_stats)[area].fail_count;
DRM_OS_SPINUNLOCK(&DRM(mem_lock));
return 0;
}
DRM_OS_SPINLOCK(&DRM(mem_lock));
++DRM(mem_stats)[area].succeed_count;
DRM(mem_stats)[area].bytes_allocated += bytes;
DRM(ram_used) += bytes;
DRM_OS_SPINUNLOCK(&DRM(mem_lock));
/* Zero outside the lock */
memset((void *)address, 0, bytes);
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;
if (!address) {
DRM_MEM_ERROR(area, "Attempt to free address 0\n");
} else {
contigfree((void *) address, bytes, DRM(M_DRM));
}
DRM_OS_SPINLOCK(&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;
DRM_OS_SPINUNLOCK(&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)
{
void *pt;
if (!size) {
DRM_MEM_ERROR(DRM_MEM_MAPPINGS,
"Mapping 0 bytes at 0x%08lx\n", offset);
return NULL;
}
if (!(pt = pmap_mapdev(offset, size))) {
DRM_OS_SPINLOCK(&DRM(mem_lock));
++DRM(mem_stats)[DRM_MEM_MAPPINGS].fail_count;
DRM_OS_SPINUNLOCK(&DRM(mem_lock));
return NULL;
}
DRM_OS_SPINLOCK(&DRM(mem_lock));
++DRM(mem_stats)[DRM_MEM_MAPPINGS].succeed_count;
DRM(mem_stats)[DRM_MEM_MAPPINGS].bytes_allocated += size;
DRM_OS_SPINUNLOCK(&DRM(mem_lock));
return pt;
}
void *DRM(ioremap_nocache)(unsigned long offset, unsigned long size)
{
void *pt;
if (!size) {
DRM_MEM_ERROR(DRM_MEM_MAPPINGS,
"Mapping 0 bytes at 0x%08lx\n", offset);
return NULL;
}
/* FIXME FOR BSD */
if (!(pt = ioremap_nocache(offset, size))) {
DRM_OS_SPINLOCK(&DRM(mem_lock));
++DRM(mem_stats)[DRM_MEM_MAPPINGS].fail_count;
DRM_OS_SPINUNLOCK(&DRM(mem_lock));
return NULL;
}
DRM_OS_SPINLOCK(&DRM(mem_lock));
++DRM(mem_stats)[DRM_MEM_MAPPINGS].succeed_count;
DRM(mem_stats)[DRM_MEM_MAPPINGS].bytes_allocated += size;
DRM_OS_SPINUNLOCK(&DRM(mem_lock));
return pt;
}
void DRM(ioremapfree)(void *pt, unsigned long size)
{
int alloc_count;
int free_count;
if (!pt)
DRM_MEM_ERROR(DRM_MEM_MAPPINGS,
"Attempt to free NULL pointer\n");
else
pmap_unmapdev((vm_offset_t) pt, size);
DRM_OS_SPINLOCK(&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;
DRM_OS_SPINUNLOCK(&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 __REALLY_HAVE_AGP
agp_memory *DRM(alloc_agp)(int pages, u32 type)
{
agp_memory *handle;
if (!pages) {
DRM_MEM_ERROR(DRM_MEM_TOTALAGP, "Allocating 0 pages\n");
return NULL;
}
if ((handle = DRM(agp_allocate_memory)(pages, type))) {
DRM_OS_SPINLOCK(&DRM(mem_lock));
++DRM(mem_stats)[DRM_MEM_TOTALAGP].succeed_count;
DRM(mem_stats)[DRM_MEM_TOTALAGP].bytes_allocated
+= pages << PAGE_SHIFT;
DRM_OS_SPINUNLOCK(&DRM(mem_lock));
return handle;
}
DRM_OS_SPINLOCK(&DRM(mem_lock));
++DRM(mem_stats)[DRM_MEM_TOTALAGP].fail_count;
DRM_OS_SPINUNLOCK(&DRM(mem_lock));
return NULL;
}
int DRM(free_agp)(agp_memory *handle, int pages)
{
int alloc_count;
int free_count;
if (!handle) {
DRM_MEM_ERROR(DRM_MEM_TOTALAGP,
"Attempt to free NULL AGP handle\n");
DRM_OS_RETURN(EINVAL);
}
if (DRM(agp_free_memory)(handle)) {
DRM_OS_SPINLOCK(&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;
DRM_OS_SPINUNLOCK(&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;
}
DRM_OS_RETURN(EINVAL);
}
int DRM(bind_agp)(agp_memory *handle, unsigned int start)
{
int retcode;
device_t dev = agp_find_device();
struct agp_memory_info info;
if (!dev)
return EINVAL;
if (!handle) {
DRM_MEM_ERROR(DRM_MEM_BOUNDAGP,
"Attempt to bind NULL AGP handle\n");
DRM_OS_RETURN(EINVAL);
}
if (!(retcode = DRM(agp_bind_memory)(handle, start))) {
DRM_OS_SPINLOCK(&DRM(mem_lock));
++DRM(mem_stats)[DRM_MEM_BOUNDAGP].succeed_count;
agp_memory_info(dev, handle, &info);
DRM(mem_stats)[DRM_MEM_BOUNDAGP].bytes_allocated
+= info.ami_size;
DRM_OS_SPINUNLOCK(&DRM(mem_lock));
DRM_OS_RETURN(0);
}
DRM_OS_SPINLOCK(&DRM(mem_lock));
++DRM(mem_stats)[DRM_MEM_BOUNDAGP].fail_count;
DRM_OS_SPINUNLOCK(&DRM(mem_lock));
DRM_OS_RETURN(retcode);
}
int DRM(unbind_agp)(agp_memory *handle)
{
int alloc_count;
int free_count;
int retcode = EINVAL;
device_t dev = agp_find_device();
struct agp_memory_info info;
if (!dev)
return EINVAL;
if (!handle) {
DRM_MEM_ERROR(DRM_MEM_BOUNDAGP,
"Attempt to unbind NULL AGP handle\n");
DRM_OS_RETURN(retcode);
}
agp_memory_info(dev, handle, &info);
if ((retcode = DRM(agp_unbind_memory)(handle)))
DRM_OS_RETURN(retcode);
DRM_OS_SPINLOCK(&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
+= info.ami_size;
DRM_OS_SPINUNLOCK(&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);
}
DRM_OS_RETURN(retcode);
}
#endif
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