[net-next-2.6.git] / drivers / gpu / drm / radeon / radeon_object.c

/*
 * Copyright 2009 Jerome Glisse.
 * 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, sub license, 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 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 NON-INFRINGEMENT. IN NO EVENT SHALL
 * THE COPYRIGHT HOLDERS, AUTHORS 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.
 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 *
 */
/*
 * Authors:
 *    Jerome Glisse <glisse@freedesktop.org>
 *    Thomas Hellstrom <thomas-at-tungstengraphics-dot-com>
 *    Dave Airlie
 */
#include <linux/list.h>
#include <linux/slab.h>
#include <drm/drmP.h>
#include "radeon_drm.h"
#include "radeon.h"


int radeon_ttm_init(struct radeon_device *rdev);
void radeon_ttm_fini(struct radeon_device *rdev);
static void radeon_bo_clear_surface_reg(struct radeon_bo *bo);

/*
 * To exclude mutual BO access we rely on bo_reserve exclusion, as all
 * function are calling it.
 */

static void radeon_ttm_bo_destroy(struct ttm_buffer_object *tbo)
{
	struct radeon_bo *bo;

	bo = container_of(tbo, struct radeon_bo, tbo);
	mutex_lock(&bo->rdev->gem.mutex);
	list_del_init(&bo->list);
	mutex_unlock(&bo->rdev->gem.mutex);
	radeon_bo_clear_surface_reg(bo);
	kfree(bo);
}

bool radeon_ttm_bo_is_radeon_bo(struct ttm_buffer_object *bo)
{
	if (bo->destroy == &radeon_ttm_bo_destroy)
		return true;
	return false;
}

void radeon_ttm_placement_from_domain(struct radeon_bo *rbo, u32 domain)
{
	u32 c = 0;

	rbo->placement.fpfn = 0;
	rbo->placement.lpfn = 0;
	rbo->placement.placement = rbo->placements;
	rbo->placement.busy_placement = rbo->placements;
	if (domain & RADEON_GEM_DOMAIN_VRAM)
		rbo->placements[c++] = TTM_PL_FLAG_WC | TTM_PL_FLAG_UNCACHED |
					TTM_PL_FLAG_VRAM;
	if (domain & RADEON_GEM_DOMAIN_GTT)
		rbo->placements[c++] = TTM_PL_MASK_CACHING | TTM_PL_FLAG_TT;
	if (domain & RADEON_GEM_DOMAIN_CPU)
		rbo->placements[c++] = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM;
	if (!c)
		rbo->placements[c++] = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM;
	rbo->placement.num_placement = c;
	rbo->placement.num_busy_placement = c;
}

int radeon_bo_create(struct radeon_device *rdev, struct drm_gem_object *gobj,
			unsigned long size, bool kernel, u32 domain,
			struct radeon_bo **bo_ptr)
{
	struct radeon_bo *bo;
	enum ttm_bo_type type;
	int r;

	if (unlikely(rdev->mman.bdev.dev_mapping == NULL)) {
		rdev->mman.bdev.dev_mapping = rdev->ddev->dev_mapping;
	}
	if (kernel) {
		type = ttm_bo_type_kernel;
	} else {
		type = ttm_bo_type_device;
	}
	*bo_ptr = NULL;
	bo = kzalloc(sizeof(struct radeon_bo), GFP_KERNEL);
	if (bo == NULL)
		return -ENOMEM;
	bo->rdev = rdev;
	bo->gobj = gobj;
	bo->surface_reg = -1;
	INIT_LIST_HEAD(&bo->list);

	radeon_ttm_placement_from_domain(bo, domain);
	/* Kernel allocation are uninterruptible */
	r = ttm_bo_init(&rdev->mman.bdev, &bo->tbo, size, type,
			&bo->placement, 0, 0, !kernel, NULL, size,
			&radeon_ttm_bo_destroy);
	if (unlikely(r != 0)) {
		if (r != -ERESTARTSYS)
			dev_err(rdev->dev,
				"object_init failed for (%lu, 0x%08X)\n",
				size, domain);
		return r;
	}
	*bo_ptr = bo;
	if (gobj) {
		mutex_lock(&bo->rdev->gem.mutex);
		list_add_tail(&bo->list, &rdev->gem.objects);
		mutex_unlock(&bo->rdev->gem.mutex);
	}
	return 0;
}

int radeon_bo_kmap(struct radeon_bo *bo, void **ptr)
{
	bool is_iomem;
	int r;

	if (bo->kptr) {
		if (ptr) {
			*ptr = bo->kptr;
		}
		return 0;
	}
	r = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.num_pages, &bo->kmap);
	if (r) {
		return r;
	}
	bo->kptr = ttm_kmap_obj_virtual(&bo->kmap, &is_iomem);
	if (ptr) {
		*ptr = bo->kptr;
	}
	radeon_bo_check_tiling(bo, 0, 0);
	return 0;
}

void radeon_bo_kunmap(struct radeon_bo *bo)
{
	if (bo->kptr == NULL)
		return;
	bo->kptr = NULL;
	radeon_bo_check_tiling(bo, 0, 0);
	ttm_bo_kunmap(&bo->kmap);
}

void radeon_bo_unref(struct radeon_bo **bo)
{
	struct ttm_buffer_object *tbo;

	if ((*bo) == NULL)
		return;
	tbo = &((*bo)->tbo);
	ttm_bo_unref(&tbo);
	if (tbo == NULL)
		*bo = NULL;
}

int radeon_bo_pin(struct radeon_bo *bo, u32 domain, u64 *gpu_addr)
{
	int r, i;

	if (bo->pin_count) {
		bo->pin_count++;
		if (gpu_addr)
			*gpu_addr = radeon_bo_gpu_offset(bo);
		return 0;
	}
	radeon_ttm_placement_from_domain(bo, domain);
	if (domain == RADEON_GEM_DOMAIN_VRAM) {
		/* force to pin into visible video ram */
		bo->placement.lpfn = bo->rdev->mc.visible_vram_size >> PAGE_SHIFT;
	}
	for (i = 0; i < bo->placement.num_placement; i++)
		bo->placements[i] |= TTM_PL_FLAG_NO_EVICT;
	r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false, false);
	if (likely(r == 0)) {
		bo->pin_count = 1;
		if (gpu_addr != NULL)
			*gpu_addr = radeon_bo_gpu_offset(bo);
	}
	if (unlikely(r != 0))
		dev_err(bo->rdev->dev, "%p pin failed\n", bo);
	return r;
}

int radeon_bo_unpin(struct radeon_bo *bo)
{
	int r, i;

	if (!bo->pin_count) {
		dev_warn(bo->rdev->dev, "%p unpin not necessary\n", bo);
		return 0;
	}
	bo->pin_count--;
	if (bo->pin_count)
		return 0;
	for (i = 0; i < bo->placement.num_placement; i++)
		bo->placements[i] &= ~TTM_PL_FLAG_NO_EVICT;
	r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false, false);
	if (unlikely(r != 0))
		dev_err(bo->rdev->dev, "%p validate failed for unpin\n", bo);
	return r;
}

int radeon_bo_evict_vram(struct radeon_device *rdev)
{
	/* late 2.6.33 fix IGP hibernate - we need pm ops to do this correct */
	if (0 && (rdev->flags & RADEON_IS_IGP)) {
		if (rdev->mc.igp_sideport_enabled == false)
			/* Useless to evict on IGP chips */
			return 0;
	}
	return ttm_bo_evict_mm(&rdev->mman.bdev, TTM_PL_VRAM);
}

void radeon_bo_force_delete(struct radeon_device *rdev)
{
	struct radeon_bo *bo, *n;
	struct drm_gem_object *gobj;

	if (list_empty(&rdev->gem.objects)) {
		return;
	}
	dev_err(rdev->dev, "Userspace still has active objects !\n");
	list_for_each_entry_safe(bo, n, &rdev->gem.objects, list) {
		mutex_lock(&rdev->ddev->struct_mutex);
		gobj = bo->gobj;
		dev_err(rdev->dev, "%p %p %lu %lu force free\n",
			gobj, bo, (unsigned long)gobj->size,
			*((unsigned long *)&gobj->refcount));
		mutex_lock(&bo->rdev->gem.mutex);
		list_del_init(&bo->list);
		mutex_unlock(&bo->rdev->gem.mutex);
		radeon_bo_unref(&bo);
		gobj->driver_private = NULL;
		drm_gem_object_unreference(gobj);
		mutex_unlock(&rdev->ddev->struct_mutex);
	}
}

int radeon_bo_init(struct radeon_device *rdev)
{
	/* Add an MTRR for the VRAM */
	rdev->mc.vram_mtrr = mtrr_add(rdev->mc.aper_base, rdev->mc.aper_size,
			MTRR_TYPE_WRCOMB, 1);
	DRM_INFO("Detected VRAM RAM=%lluM, BAR=%lluM\n",
		rdev->mc.mc_vram_size >> 20,
		(unsigned long long)rdev->mc.aper_size >> 20);
	DRM_INFO("RAM width %dbits %cDR\n",
			rdev->mc.vram_width, rdev->mc.vram_is_ddr ? 'D' : 'S');
	return radeon_ttm_init(rdev);
}

void radeon_bo_fini(struct radeon_device *rdev)
{
	radeon_ttm_fini(rdev);
}

void radeon_bo_list_add_object(struct radeon_bo_list *lobj,
				struct list_head *head)
{
	if (lobj->wdomain) {
		list_add(&lobj->list, head);
	} else {
		list_add_tail(&lobj->list, head);
	}
}

int radeon_bo_list_reserve(struct list_head *head)
{
	struct radeon_bo_list *lobj;
	int r;

	list_for_each_entry(lobj, head, list){
		r = radeon_bo_reserve(lobj->bo, false);
		if (unlikely(r != 0))
			return r;
	}
	return 0;
}

void radeon_bo_list_unreserve(struct list_head *head)
{
	struct radeon_bo_list *lobj;

	list_for_each_entry(lobj, head, list) {
		/* only unreserve object we successfully reserved */
		if (radeon_bo_is_reserved(lobj->bo))
			radeon_bo_unreserve(lobj->bo);
	}
}

int radeon_bo_list_validate(struct list_head *head)
{
	struct radeon_bo_list *lobj;
	struct radeon_bo *bo;
	int r;

	r = radeon_bo_list_reserve(head);
	if (unlikely(r != 0)) {
		return r;
	}
	list_for_each_entry(lobj, head, list) {
		bo = lobj->bo;
		if (!bo->pin_count) {
			if (lobj->wdomain) {
				radeon_ttm_placement_from_domain(bo,
								lobj->wdomain);
			} else {
				radeon_ttm_placement_from_domain(bo,
								lobj->rdomain);
			}
			r = ttm_bo_validate(&bo->tbo, &bo->placement,
						true, false, false);
			if (unlikely(r))
				return r;
		}
		lobj->gpu_offset = radeon_bo_gpu_offset(bo);
		lobj->tiling_flags = bo->tiling_flags;
	}
	return 0;
}

void radeon_bo_list_fence(struct list_head *head, void *fence)
{
	struct radeon_bo_list *lobj;
	struct radeon_bo *bo;
	struct radeon_fence *old_fence = NULL;

	list_for_each_entry(lobj, head, list) {
		bo = lobj->bo;
		spin_lock(&bo->tbo.lock);
		old_fence = (struct radeon_fence *)bo->tbo.sync_obj;
		bo->tbo.sync_obj = radeon_fence_ref(fence);
		bo->tbo.sync_obj_arg = NULL;
		spin_unlock(&bo->tbo.lock);
		if (old_fence) {
			radeon_fence_unref(&old_fence);
		}
	}
}

int radeon_bo_fbdev_mmap(struct radeon_bo *bo,
			     struct vm_area_struct *vma)
{
	return ttm_fbdev_mmap(vma, &bo->tbo);
}

int radeon_bo_get_surface_reg(struct radeon_bo *bo)
{
	struct radeon_device *rdev = bo->rdev;
	struct radeon_surface_reg *reg;
	struct radeon_bo *old_object;
	int steal;
	int i;

	BUG_ON(!atomic_read(&bo->tbo.reserved));

	if (!bo->tiling_flags)
		return 0;

	if (bo->surface_reg >= 0) {
		reg = &rdev->surface_regs[bo->surface_reg];
		i = bo->surface_reg;
		goto out;
	}

	steal = -1;
	for (i = 0; i < RADEON_GEM_MAX_SURFACES; i++) {

		reg = &rdev->surface_regs[i];
		if (!reg->bo)
			break;

		old_object = reg->bo;
		if (old_object->pin_count == 0)
			steal = i;
	}

	/* if we are all out */
	if (i == RADEON_GEM_MAX_SURFACES) {
		if (steal == -1)
			return -ENOMEM;
		/* find someone with a surface reg and nuke their BO */
		reg = &rdev->surface_regs[steal];
		old_object = reg->bo;
		/* blow away the mapping */
		DRM_DEBUG("stealing surface reg %d from %p\n", steal, old_object);
		ttm_bo_unmap_virtual(&old_object->tbo);
		old_object->surface_reg = -1;
		i = steal;
	}

	bo->surface_reg = i;
	reg->bo = bo;

out:
	radeon_set_surface_reg(rdev, i, bo->tiling_flags, bo->pitch,
			       bo->tbo.mem.mm_node->start << PAGE_SHIFT,
			       bo->tbo.num_pages << PAGE_SHIFT);
	return 0;
}

static void radeon_bo_clear_surface_reg(struct radeon_bo *bo)
{
	struct radeon_device *rdev = bo->rdev;
	struct radeon_surface_reg *reg;

	if (bo->surface_reg == -1)
		return;

	reg = &rdev->surface_regs[bo->surface_reg];
	radeon_clear_surface_reg(rdev, bo->surface_reg);

	reg->bo = NULL;
	bo->surface_reg = -1;
}

int radeon_bo_set_tiling_flags(struct radeon_bo *bo,
				uint32_t tiling_flags, uint32_t pitch)
{
	int r;

	r = radeon_bo_reserve(bo, false);
	if (unlikely(r != 0))
		return r;
	bo->tiling_flags = tiling_flags;
	bo->pitch = pitch;
	radeon_bo_unreserve(bo);
	return 0;
}

void radeon_bo_get_tiling_flags(struct radeon_bo *bo,
				uint32_t *tiling_flags,
				uint32_t *pitch)
{
	BUG_ON(!atomic_read(&bo->tbo.reserved));
	if (tiling_flags)
		*tiling_flags = bo->tiling_flags;
	if (pitch)
		*pitch = bo->pitch;
}

int radeon_bo_check_tiling(struct radeon_bo *bo, bool has_moved,
				bool force_drop)
{
	BUG_ON(!atomic_read(&bo->tbo.reserved));

	if (!(bo->tiling_flags & RADEON_TILING_SURFACE))
		return 0;

	if (force_drop) {
		radeon_bo_clear_surface_reg(bo);
		return 0;
	}

	if (bo->tbo.mem.mem_type != TTM_PL_VRAM) {
		if (!has_moved)
			return 0;

		if (bo->surface_reg >= 0)
			radeon_bo_clear_surface_reg(bo);
		return 0;
	}

	if ((bo->surface_reg >= 0) && !has_moved)
		return 0;

	return radeon_bo_get_surface_reg(bo);
}

void radeon_bo_move_notify(struct ttm_buffer_object *bo,
			   struct ttm_mem_reg *mem)
{
	struct radeon_bo *rbo;
	if (!radeon_ttm_bo_is_radeon_bo(bo))
		return;
	rbo = container_of(bo, struct radeon_bo, tbo);
	radeon_bo_check_tiling(rbo, 0, 1);
}

int radeon_bo_fault_reserve_notify(struct ttm_buffer_object *bo)
{
	struct radeon_device *rdev;
	struct radeon_bo *rbo;
	unsigned long offset, size;
	int r;

	if (!radeon_ttm_bo_is_radeon_bo(bo))
		return 0;
	rbo = container_of(bo, struct radeon_bo, tbo);
	radeon_bo_check_tiling(rbo, 0, 0);
	rdev = rbo->rdev;
	if (bo->mem.mem_type == TTM_PL_VRAM) {
		size = bo->mem.num_pages << PAGE_SHIFT;
		offset = bo->mem.mm_node->start << PAGE_SHIFT;
		if ((offset + size) > rdev->mc.visible_vram_size) {
			/* hurrah the memory is not visible ! */
			radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_VRAM);
			rbo->placement.lpfn = rdev->mc.visible_vram_size >> PAGE_SHIFT;
			r = ttm_bo_validate(bo, &rbo->placement, false, true, false);
			if (unlikely(r != 0))
				return r;
			offset = bo->mem.mm_node->start << PAGE_SHIFT;
			/* this should not happen */
			if ((offset + size) > rdev->mc.visible_vram_size)
				return -EINVAL;
		}
	}
	return 0;
}
Commit	Line	Data
	1	/*
	2	* Copyright 2009 Jerome Glisse.
	3	* All Rights Reserved.
	4	*
	5	* Permission is hereby granted, free of charge, to any person obtaining a
	6	* copy of this software and associated documentation files (the
	7	* "Software"), to deal in the Software without restriction, including
	8	* without limitation the rights to use, copy, modify, merge, publish,
	9	* distribute, sub license, and/or sell copies of the Software, and to
	10	* permit persons to whom the Software is furnished to do so, subject to
	11	* the following conditions:
	12	*
	13	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	14	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	15	* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
	16	* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
	17	* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
	18	* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
	19	* USE OR OTHER DEALINGS IN THE SOFTWARE.
	20	*
	21	* The above copyright notice and this permission notice (including the
	22	* next paragraph) shall be included in all copies or substantial portions
	23	* of the Software.
	24	*
	25	*/
	26	/*
	27	* Authors:
	28	* Jerome Glisse <glisse@freedesktop.org>
	29	* Thomas Hellstrom <thomas-at-tungstengraphics-dot-com>
	30	* Dave Airlie
	31	*/
	32	#include <linux/list.h>
	33	#include <linux/slab.h>
	34	#include <drm/drmP.h>
	35	#include "radeon_drm.h"
	36	#include "radeon.h"
	37
	38
	39	int radeon_ttm_init(struct radeon_device *rdev);
	40	void radeon_ttm_fini(struct radeon_device *rdev);
	41	static void radeon_bo_clear_surface_reg(struct radeon_bo *bo);
	42
	43	/*
	44	* To exclude mutual BO access we rely on bo_reserve exclusion, as all
	45	* function are calling it.
	46	*/
	47
	48	static void radeon_ttm_bo_destroy(struct ttm_buffer_object *tbo)
	49	{
	50	struct radeon_bo *bo;
	51
	52	bo = container_of(tbo, struct radeon_bo, tbo);
	53	mutex_lock(&bo->rdev->gem.mutex);
	54	list_del_init(&bo->list);
	55	mutex_unlock(&bo->rdev->gem.mutex);
	56	radeon_bo_clear_surface_reg(bo);
	57	kfree(bo);
	58	}
	59
	60	bool radeon_ttm_bo_is_radeon_bo(struct ttm_buffer_object *bo)
	61	{
	62	if (bo->destroy == &radeon_ttm_bo_destroy)
	63	return true;
	64	return false;
	65	}
	66
	67	void radeon_ttm_placement_from_domain(struct radeon_bo *rbo, u32 domain)
	68	{
	69	u32 c = 0;
	70
	71	rbo->placement.fpfn = 0;
	72	rbo->placement.lpfn = 0;
	73	rbo->placement.placement = rbo->placements;
	74	rbo->placement.busy_placement = rbo->placements;
	75	if (domain & RADEON_GEM_DOMAIN_VRAM)
	76	rbo->placements[c++] = TTM_PL_FLAG_WC \| TTM_PL_FLAG_UNCACHED \|
	77	TTM_PL_FLAG_VRAM;
	78	if (domain & RADEON_GEM_DOMAIN_GTT)
	79	rbo->placements[c++] = TTM_PL_MASK_CACHING \| TTM_PL_FLAG_TT;
	80	if (domain & RADEON_GEM_DOMAIN_CPU)
	81	rbo->placements[c++] = TTM_PL_MASK_CACHING \| TTM_PL_FLAG_SYSTEM;
	82	if (!c)
	83	rbo->placements[c++] = TTM_PL_MASK_CACHING \| TTM_PL_FLAG_SYSTEM;
	84	rbo->placement.num_placement = c;
	85	rbo->placement.num_busy_placement = c;
	86	}
	87
	88	int radeon_bo_create(struct radeon_device rdev, struct drm_gem_object gobj,
	89	unsigned long size, bool kernel, u32 domain,
	90	struct radeon_bo **bo_ptr)
	91	{
	92	struct radeon_bo *bo;
	93	enum ttm_bo_type type;
	94	int r;
	95
	96	if (unlikely(rdev->mman.bdev.dev_mapping == NULL)) {
	97	rdev->mman.bdev.dev_mapping = rdev->ddev->dev_mapping;
	98	}
	99	if (kernel) {
	100	type = ttm_bo_type_kernel;
	101	} else {
	102	type = ttm_bo_type_device;
	103	}
	104	*bo_ptr = NULL;
	105	bo = kzalloc(sizeof(struct radeon_bo), GFP_KERNEL);
	106	if (bo == NULL)
	107	return -ENOMEM;
	108	bo->rdev = rdev;
	109	bo->gobj = gobj;
	110	bo->surface_reg = -1;
	111	INIT_LIST_HEAD(&bo->list);
	112
	113	radeon_ttm_placement_from_domain(bo, domain);
	114	/* Kernel allocation are uninterruptible */
	115	r = ttm_bo_init(&rdev->mman.bdev, &bo->tbo, size, type,
	116	&bo->placement, 0, 0, !kernel, NULL, size,
	117	&radeon_ttm_bo_destroy);
	118	if (unlikely(r != 0)) {
	119	if (r != -ERESTARTSYS)
	120	dev_err(rdev->dev,
	121	"object_init failed for (%lu, 0x%08X)\n",
	122	size, domain);
	123	return r;
	124	}
	125	*bo_ptr = bo;
	126	if (gobj) {
	127	mutex_lock(&bo->rdev->gem.mutex);
	128	list_add_tail(&bo->list, &rdev->gem.objects);
	129	mutex_unlock(&bo->rdev->gem.mutex);
	130	}
	131	return 0;
	132	}
	133
	134	int radeon_bo_kmap(struct radeon_bo bo, void *ptr)
	135	{
	136	bool is_iomem;
	137	int r;
	138
	139	if (bo->kptr) {
	140	if (ptr) {
	141	*ptr = bo->kptr;
	142	}
	143	return 0;
	144	}
	145	r = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.num_pages, &bo->kmap);
	146	if (r) {
	147	return r;
	148	}
	149	bo->kptr = ttm_kmap_obj_virtual(&bo->kmap, &is_iomem);
	150	if (ptr) {
	151	*ptr = bo->kptr;
	152	}
	153	radeon_bo_check_tiling(bo, 0, 0);
	154	return 0;
	155	}
	156
	157	void radeon_bo_kunmap(struct radeon_bo *bo)
	158	{
	159	if (bo->kptr == NULL)
	160	return;
	161	bo->kptr = NULL;
	162	radeon_bo_check_tiling(bo, 0, 0);
	163	ttm_bo_kunmap(&bo->kmap);
	164	}
	165
	166	void radeon_bo_unref(struct radeon_bo **bo)
	167	{
	168	struct ttm_buffer_object *tbo;
	169
	170	if ((*bo) == NULL)
	171	return;
	172	tbo = &((*bo)->tbo);
	173	ttm_bo_unref(&tbo);
	174	if (tbo == NULL)
	175	*bo = NULL;
	176	}
	177
	178	int radeon_bo_pin(struct radeon_bo bo, u32 domain, u64 gpu_addr)
	179	{
	180	int r, i;
	181
	182	if (bo->pin_count) {
	183	bo->pin_count++;
	184	if (gpu_addr)
	185	*gpu_addr = radeon_bo_gpu_offset(bo);
	186	return 0;
	187	}
	188	radeon_ttm_placement_from_domain(bo, domain);
	189	if (domain == RADEON_GEM_DOMAIN_VRAM) {
	190	/* force to pin into visible video ram */
	191	bo->placement.lpfn = bo->rdev->mc.visible_vram_size >> PAGE_SHIFT;
	192	}
	193	for (i = 0; i < bo->placement.num_placement; i++)
	194	bo->placements[i] \|= TTM_PL_FLAG_NO_EVICT;
	195	r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false, false);
	196	if (likely(r == 0)) {
	197	bo->pin_count = 1;
	198	if (gpu_addr != NULL)
	199	*gpu_addr = radeon_bo_gpu_offset(bo);
	200	}
	201	if (unlikely(r != 0))
	202	dev_err(bo->rdev->dev, "%p pin failed\n", bo);
	203	return r;
	204	}
	205
	206	int radeon_bo_unpin(struct radeon_bo *bo)
	207	{
	208	int r, i;
	209
	210	if (!bo->pin_count) {
	211	dev_warn(bo->rdev->dev, "%p unpin not necessary\n", bo);
	212	return 0;
	213	}
	214	bo->pin_count--;
	215	if (bo->pin_count)
	216	return 0;
	217	for (i = 0; i < bo->placement.num_placement; i++)
	218	bo->placements[i] &= ~TTM_PL_FLAG_NO_EVICT;
	219	r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false, false);
	220	if (unlikely(r != 0))
	221	dev_err(bo->rdev->dev, "%p validate failed for unpin\n", bo);
	222	return r;
	223	}
	224
	225	int radeon_bo_evict_vram(struct radeon_device *rdev)
	226	{
	227	/* late 2.6.33 fix IGP hibernate - we need pm ops to do this correct */
	228	if (0 && (rdev->flags & RADEON_IS_IGP)) {
	229	if (rdev->mc.igp_sideport_enabled == false)
	230	/* Useless to evict on IGP chips */
	231	return 0;
	232	}
	233	return ttm_bo_evict_mm(&rdev->mman.bdev, TTM_PL_VRAM);
	234	}
	235
	236	void radeon_bo_force_delete(struct radeon_device *rdev)
	237	{
	238	struct radeon_bo bo, n;
	239	struct drm_gem_object *gobj;
	240
	241	if (list_empty(&rdev->gem.objects)) {
	242	return;
	243	}
	244	dev_err(rdev->dev, "Userspace still has active objects !\n");
	245	list_for_each_entry_safe(bo, n, &rdev->gem.objects, list) {
	246	mutex_lock(&rdev->ddev->struct_mutex);
	247	gobj = bo->gobj;
	248	dev_err(rdev->dev, "%p %p %lu %lu force free\n",
	249	gobj, bo, (unsigned long)gobj->size,
	250	((unsigned long )&gobj->refcount));
	251	mutex_lock(&bo->rdev->gem.mutex);
	252	list_del_init(&bo->list);
	253	mutex_unlock(&bo->rdev->gem.mutex);
	254	radeon_bo_unref(&bo);
	255	gobj->driver_private = NULL;
	256	drm_gem_object_unreference(gobj);
	257	mutex_unlock(&rdev->ddev->struct_mutex);
	258	}
	259	}
	260
	261	int radeon_bo_init(struct radeon_device *rdev)
	262	{
	263	/* Add an MTRR for the VRAM */
	264	rdev->mc.vram_mtrr = mtrr_add(rdev->mc.aper_base, rdev->mc.aper_size,
	265	MTRR_TYPE_WRCOMB, 1);
	266	DRM_INFO("Detected VRAM RAM=%lluM, BAR=%lluM\n",
	267	rdev->mc.mc_vram_size >> 20,
	268	(unsigned long long)rdev->mc.aper_size >> 20);
	269	DRM_INFO("RAM width %dbits %cDR\n",
	270	rdev->mc.vram_width, rdev->mc.vram_is_ddr ? 'D' : 'S');
	271	return radeon_ttm_init(rdev);
	272	}
	273
	274	void radeon_bo_fini(struct radeon_device *rdev)
	275	{
	276	radeon_ttm_fini(rdev);
	277	}
	278
	279	void radeon_bo_list_add_object(struct radeon_bo_list *lobj,
	280	struct list_head *head)
	281	{
	282	if (lobj->wdomain) {
	283	list_add(&lobj->list, head);
	284	} else {
	285	list_add_tail(&lobj->list, head);
	286	}
	287	}
	288
	289	int radeon_bo_list_reserve(struct list_head *head)
	290	{
	291	struct radeon_bo_list *lobj;
	292	int r;
	293
	294	list_for_each_entry(lobj, head, list){
	295	r = radeon_bo_reserve(lobj->bo, false);
	296	if (unlikely(r != 0))
	297	return r;
	298	}
	299	return 0;
	300	}
	301
	302	void radeon_bo_list_unreserve(struct list_head *head)
	303	{
	304	struct radeon_bo_list *lobj;
	305
	306	list_for_each_entry(lobj, head, list) {
	307	/* only unreserve object we successfully reserved */
	308	if (radeon_bo_is_reserved(lobj->bo))
	309	radeon_bo_unreserve(lobj->bo);
	310	}
	311	}
	312
	313	int radeon_bo_list_validate(struct list_head *head)
	314	{
	315	struct radeon_bo_list *lobj;
	316	struct radeon_bo *bo;
	317	int r;
	318
	319	r = radeon_bo_list_reserve(head);
	320	if (unlikely(r != 0)) {
	321	return r;
	322	}
	323	list_for_each_entry(lobj, head, list) {
	324	bo = lobj->bo;
	325	if (!bo->pin_count) {
	326	if (lobj->wdomain) {
	327	radeon_ttm_placement_from_domain(bo,
	328	lobj->wdomain);
	329	} else {
	330	radeon_ttm_placement_from_domain(bo,
	331	lobj->rdomain);
	332	}
	333	r = ttm_bo_validate(&bo->tbo, &bo->placement,
	334	true, false, false);
	335	if (unlikely(r))
	336	return r;
	337	}
	338	lobj->gpu_offset = radeon_bo_gpu_offset(bo);
	339	lobj->tiling_flags = bo->tiling_flags;
	340	}
	341	return 0;
	342	}
	343
	344	void radeon_bo_list_fence(struct list_head head, void fence)
	345	{
	346	struct radeon_bo_list *lobj;
	347	struct radeon_bo *bo;
	348	struct radeon_fence *old_fence = NULL;
	349
	350	list_for_each_entry(lobj, head, list) {
	351	bo = lobj->bo;
	352	spin_lock(&bo->tbo.lock);
	353	old_fence = (struct radeon_fence *)bo->tbo.sync_obj;
	354	bo->tbo.sync_obj = radeon_fence_ref(fence);
	355	bo->tbo.sync_obj_arg = NULL;
	356	spin_unlock(&bo->tbo.lock);
	357	if (old_fence) {
	358	radeon_fence_unref(&old_fence);
	359	}
	360	}
	361	}
	362
	363	int radeon_bo_fbdev_mmap(struct radeon_bo *bo,
	364	struct vm_area_struct *vma)
	365	{
	366	return ttm_fbdev_mmap(vma, &bo->tbo);
	367	}
	368
	369	int radeon_bo_get_surface_reg(struct radeon_bo *bo)
	370	{
	371	struct radeon_device *rdev = bo->rdev;
	372	struct radeon_surface_reg *reg;
	373	struct radeon_bo *old_object;
	374	int steal;
	375	int i;
	376
	377	BUG_ON(!atomic_read(&bo->tbo.reserved));
	378
	379	if (!bo->tiling_flags)
	380	return 0;
	381
	382	if (bo->surface_reg >= 0) {
	383	reg = &rdev->surface_regs[bo->surface_reg];
	384	i = bo->surface_reg;
	385	goto out;
	386	}
	387
	388	steal = -1;
	389	for (i = 0; i < RADEON_GEM_MAX_SURFACES; i++) {
	390
	391	reg = &rdev->surface_regs[i];
	392	if (!reg->bo)
	393	break;
	394
	395	old_object = reg->bo;
	396	if (old_object->pin_count == 0)
	397	steal = i;
	398	}
	399
	400	/* if we are all out */
	401	if (i == RADEON_GEM_MAX_SURFACES) {
	402	if (steal == -1)
	403	return -ENOMEM;
	404	/* find someone with a surface reg and nuke their BO */
	405	reg = &rdev->surface_regs[steal];
	406	old_object = reg->bo;
	407	/* blow away the mapping */
	408	DRM_DEBUG("stealing surface reg %d from %p\n", steal, old_object);
	409	ttm_bo_unmap_virtual(&old_object->tbo);
	410	old_object->surface_reg = -1;
	411	i = steal;
	412	}
	413
	414	bo->surface_reg = i;
	415	reg->bo = bo;
	416
	417	out:
	418	radeon_set_surface_reg(rdev, i, bo->tiling_flags, bo->pitch,
	419	bo->tbo.mem.mm_node->start << PAGE_SHIFT,
	420	bo->tbo.num_pages << PAGE_SHIFT);
	421	return 0;
	422	}
	423
	424	static void radeon_bo_clear_surface_reg(struct radeon_bo *bo)
	425	{
	426	struct radeon_device *rdev = bo->rdev;
	427	struct radeon_surface_reg *reg;
	428
	429	if (bo->surface_reg == -1)
	430	return;
	431
	432	reg = &rdev->surface_regs[bo->surface_reg];
	433	radeon_clear_surface_reg(rdev, bo->surface_reg);
	434
	435	reg->bo = NULL;
	436	bo->surface_reg = -1;
	437	}
	438
	439	int radeon_bo_set_tiling_flags(struct radeon_bo *bo,
	440	uint32_t tiling_flags, uint32_t pitch)
	441	{
	442	int r;
	443
	444	r = radeon_bo_reserve(bo, false);
	445	if (unlikely(r != 0))
	446	return r;
	447	bo->tiling_flags = tiling_flags;
	448	bo->pitch = pitch;
	449	radeon_bo_unreserve(bo);
	450	return 0;
	451	}
	452
	453	void radeon_bo_get_tiling_flags(struct radeon_bo *bo,
	454	uint32_t *tiling_flags,
	455	uint32_t *pitch)
	456	{
	457	BUG_ON(!atomic_read(&bo->tbo.reserved));
	458	if (tiling_flags)
	459	*tiling_flags = bo->tiling_flags;
	460	if (pitch)
	461	*pitch = bo->pitch;
	462	}
	463
	464	int radeon_bo_check_tiling(struct radeon_bo *bo, bool has_moved,
	465	bool force_drop)
	466	{
	467	BUG_ON(!atomic_read(&bo->tbo.reserved));
	468
	469	if (!(bo->tiling_flags & RADEON_TILING_SURFACE))
	470	return 0;
	471
	472	if (force_drop) {
	473	radeon_bo_clear_surface_reg(bo);
	474	return 0;
	475	}
	476
	477	if (bo->tbo.mem.mem_type != TTM_PL_VRAM) {
	478	if (!has_moved)
	479	return 0;
	480
	481	if (bo->surface_reg >= 0)
	482	radeon_bo_clear_surface_reg(bo);
	483	return 0;
	484	}
	485
	486	if ((bo->surface_reg >= 0) && !has_moved)
	487	return 0;
	488
	489	return radeon_bo_get_surface_reg(bo);
	490	}
	491
	492	void radeon_bo_move_notify(struct ttm_buffer_object *bo,
	493	struct ttm_mem_reg *mem)
	494	{
	495	struct radeon_bo *rbo;
	496	if (!radeon_ttm_bo_is_radeon_bo(bo))
	497	return;
	498	rbo = container_of(bo, struct radeon_bo, tbo);
	499	radeon_bo_check_tiling(rbo, 0, 1);
	500	}
	501
	502	int radeon_bo_fault_reserve_notify(struct ttm_buffer_object *bo)
	503	{
	504	struct radeon_device *rdev;
	505	struct radeon_bo *rbo;
	506	unsigned long offset, size;
	507	int r;
	508
	509	if (!radeon_ttm_bo_is_radeon_bo(bo))
	510	return 0;
	511	rbo = container_of(bo, struct radeon_bo, tbo);
	512	radeon_bo_check_tiling(rbo, 0, 0);
	513	rdev = rbo->rdev;
	514	if (bo->mem.mem_type == TTM_PL_VRAM) {
	515	size = bo->mem.num_pages << PAGE_SHIFT;
	516	offset = bo->mem.mm_node->start << PAGE_SHIFT;
	517	if ((offset + size) > rdev->mc.visible_vram_size) {
	518	/* hurrah the memory is not visible ! */
	519	radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_VRAM);
	520	rbo->placement.lpfn = rdev->mc.visible_vram_size >> PAGE_SHIFT;
	521	r = ttm_bo_validate(bo, &rbo->placement, false, true, false);
	522	if (unlikely(r != 0))
	523	return r;
	524	offset = bo->mem.mm_node->start << PAGE_SHIFT;
	525	/* this should not happen */
	526	if ((offset + size) > rdev->mc.visible_vram_size)
	527	return -EINVAL;
	528	}
	529	}
	530	return 0;
	531	}