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AgeCommit message (Expand)Author
2007-11-15nouveau: be verbose about PPC bios for now.Stephane Marchesin
2007-11-15nouveau: revert the nv34 context size change, it was not the culprit after all.Stephane Marchesin
2007-11-15nouveau: use get_property instead of of_get_property on pre-2.6.22 kernels.Stephane Marchesin
2007-11-15Merge branch 'master' of git+ssh://git.freedesktop.org/git/mesa/drm into mode...Thomas Hellstrom
2007-11-15mm fixups.Thomas Hellstrom
2007-11-15libdrm: return crtc id to userspaceDave Airlie
2007-11-15libdrm: add crtc/output ids to userspace interfaceDave Airlie
2007-11-15drm: send correct fb id to userspaceDave Airlie
2007-11-15modes: pass type to userspace for preferred showingDave Airlie
2007-11-15drm: don't remove mappings added by the driverDave Airlie
2007-11-15intel: fixup || vs |Dave Airlie
2007-11-15tests: update for new drm interfaceDave Airlie
2007-11-15Merge branch 'master' into modesetting-101Dave Airlie
2007-11-15i915: remove excess debug outputDave Airlie
2007-11-15nouveau: Copy the PPC bios to RAMIN on init, that lets us do proper output de...Stephane Marchesin
2007-11-15intel: add flushing for i8xx chipsets.Dave Airlie
2007-11-14nouveau: nv30: missing ramin init, does it brake other hw?Patrice Mandin
2007-11-14Add new shared header file drm_internal.h.Kristian Høgsberg
2007-11-14nouveau: adjust the size of the NV34 context. That fixes mobile PPC cards.Stephane Marchesin
2007-11-13Fix ttmtest.Thomas Hellstrom
2007-11-14nouveau: Also wait until CACHE1 gets emptied.Ben Skeggs
2007-11-14Revert "nouveau: stub superioctl"Ben Skeggs
2007-11-14Merge branch 'fifo-cleanup' into upstream-masterBen Skeggs
2007-11-14nouveau: Attempt to wait for channel idle before we destroy it.Ben Skeggs
2007-11-14nouveau: Use "new" NV40 USER control regs.Ben Skeggs
2007-11-14nouveau: store user control reg offsets in channel structBen Skeggs
2007-11-14nouveau: funcs to determine active channel on PFIFO.Ben Skeggs
2007-11-14nouveau: stub superioctlBen Skeggs
2007-11-10Make sure PLLs are enabled before writing pipe configuration regsJesse Barnes
2007-11-09suspend() and resume() need kernel 2.6.22 or laterPatrice Mandin
2007-11-09drm: check edid data, so we deal well with broken driver.Jerome Glisse
2007-11-09drm: split edid handling in get_edid & add_edid_modeJerome Glisse
2007-11-09i915: cleanup pageflip derefs sarea even if no sarea existsDave Airlie
2007-11-07Merge branch 'master' of git+ssh://git.freedesktop.org/git/mesa/drm into mode...Thomas Hellstrom
2007-11-07Don't overwrite TTM page flags.Thomas Hellstrom
2007-11-07i915: oops disable TTM is backwardsDave Airlie
2007-11-06Merge branch 'master' of git+ssh://git.freedesktop.org/git/mesa/drm into mode...Thomas Hellstrom
2007-11-06Avoid buffers not ending up on a list in some cases.Thomas Hellstrom
2007-11-06Add missing drm_regman.c file.Thomas Hellstrom
2007-11-06i915: disable TTM on 8xx chips for now until flushing is solvedDave Airlie
2007-11-06i915: compat code doesn't work in i8xx hw.Dave Airlie
2007-11-06[PATCH] i915: fix missing G33 detect in IS_I9XXZhenyu Wang
2007-11-06drm/agp: kernel style fixesDave Airlie
2007-11-06i915: cleanup most of the whitespaceDave Airlie
2007-11-05Merge branch 'master' into modesetting-101Thomas Hellstrom
2007-11-05Export a symbol.Thomas Hellstrom
2007-11-05Fix a user-buffer check.Thomas Hellstrom
2007-11-05remove unused defineAlan Hourihane
2007-11-05remove duplicate and obsolete ioctl statementsAlan Hourihane
2007-11-05add missing lockAlan Hourihane
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/**
 * \file drm_memory_debug.c
 * 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"

#ifdef DEBUG_MEMORY

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_mem_lock = SPIN_LOCK_UNLOCKED;
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;
}
EXPORT_SYMBOL(drm_alloc);

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;
}
EXPORT_SYMBOL(drm_calloc);

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;
}
EXPORT_SYMBOL(drm_realloc);

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);
	}
}
EXPORT_SYMBOL(drm_free);

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;
}
EXPORT_SYMBOL(drm_ioremap);

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;
}
EXPORT_SYMBOL(drm_ioremap_nocache);

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;