[deliverable/linux.git] / drivers / gpu / drm / cirrus / cirrus_ttm.c

/*
 * Copyright 2012 Red Hat Inc.
 *
 * 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: Dave Airlie <airlied@redhat.com>
 */
#include <drm/drmP.h>
#include "cirrus_drv.h"
#include <ttm/ttm_page_alloc.h>

static inline struct cirrus_device *
cirrus_bdev(struct ttm_bo_device *bd)
{
	return container_of(bd, struct cirrus_device, ttm.bdev);
}

static int
cirrus_ttm_mem_global_init(struct drm_global_reference *ref)
{
	return ttm_mem_global_init(ref->object);
}

static void
cirrus_ttm_mem_global_release(struct drm_global_reference *ref)
{
	ttm_mem_global_release(ref->object);
}

static int cirrus_ttm_global_init(struct cirrus_device *cirrus)
{
	struct drm_global_reference *global_ref;
	int r;

	global_ref = &cirrus->ttm.mem_global_ref;
	global_ref->global_type = DRM_GLOBAL_TTM_MEM;
	global_ref->size = sizeof(struct ttm_mem_global);
	global_ref->init = &cirrus_ttm_mem_global_init;
	global_ref->release = &cirrus_ttm_mem_global_release;
	r = drm_global_item_ref(global_ref);
	if (r != 0) {
		DRM_ERROR("Failed setting up TTM memory accounting "
			  "subsystem.\n");
		return r;
	}

	cirrus->ttm.bo_global_ref.mem_glob =
		cirrus->ttm.mem_global_ref.object;
	global_ref = &cirrus->ttm.bo_global_ref.ref;
	global_ref->global_type = DRM_GLOBAL_TTM_BO;
	global_ref->size = sizeof(struct ttm_bo_global);
	global_ref->init = &ttm_bo_global_init;
	global_ref->release = &ttm_bo_global_release;
	r = drm_global_item_ref(global_ref);
	if (r != 0) {
		DRM_ERROR("Failed setting up TTM BO subsystem.\n");
		drm_global_item_unref(&cirrus->ttm.mem_global_ref);
		return r;
	}
	return 0;
}

static void
cirrus_ttm_global_release(struct cirrus_device *cirrus)
{
	if (cirrus->ttm.mem_global_ref.release == NULL)
		return;

	drm_global_item_unref(&cirrus->ttm.bo_global_ref.ref);
	drm_global_item_unref(&cirrus->ttm.mem_global_ref);
	cirrus->ttm.mem_global_ref.release = NULL;
}


static void cirrus_bo_ttm_destroy(struct ttm_buffer_object *tbo)
{
	struct cirrus_bo *bo;

	bo = container_of(tbo, struct cirrus_bo, bo);

	drm_gem_object_release(&bo->gem);
	kfree(bo);
}

static bool cirrus_ttm_bo_is_cirrus_bo(struct ttm_buffer_object *bo)
{
	if (bo->destroy == &cirrus_bo_ttm_destroy)
		return true;
	return false;
}

static int
cirrus_bo_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
		     struct ttm_mem_type_manager *man)
{
	switch (type) {
	case TTM_PL_SYSTEM:
		man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
		man->available_caching = TTM_PL_MASK_CACHING;
		man->default_caching = TTM_PL_FLAG_CACHED;
		break;
	case TTM_PL_VRAM:
		man->func = &ttm_bo_manager_func;
		man->flags = TTM_MEMTYPE_FLAG_FIXED |
			TTM_MEMTYPE_FLAG_MAPPABLE;
		man->available_caching = TTM_PL_FLAG_UNCACHED |
			TTM_PL_FLAG_WC;
		man->default_caching = TTM_PL_FLAG_WC;
		break;
	default:
		DRM_ERROR("Unsupported memory type %u\n", (unsigned)type);
		return -EINVAL;
	}
	return 0;
}

static void
cirrus_bo_evict_flags(struct ttm_buffer_object *bo, struct ttm_placement *pl)
{
	struct cirrus_bo *cirrusbo = cirrus_bo(bo);

	if (!cirrus_ttm_bo_is_cirrus_bo(bo))
		return;

	cirrus_ttm_placement(cirrusbo, TTM_PL_FLAG_SYSTEM);
	*pl = cirrusbo->placement;
}

static int cirrus_bo_verify_access(struct ttm_buffer_object *bo, struct file *filp)
{
	struct cirrus_bo *cirrusbo = cirrus_bo(bo);

	return drm_vma_node_verify_access(&cirrusbo->gem.vma_node, filp);
}

static int cirrus_ttm_io_mem_reserve(struct ttm_bo_device *bdev,
				  struct ttm_mem_reg *mem)
{
	struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
	struct cirrus_device *cirrus = cirrus_bdev(bdev);

	mem->bus.addr = NULL;
	mem->bus.offset = 0;
	mem->bus.size = mem->num_pages << PAGE_SHIFT;
	mem->bus.base = 0;
	mem->bus.is_iomem = false;
	if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE))
		return -EINVAL;
	switch (mem->mem_type) {
	case TTM_PL_SYSTEM:
		/* system memory */
		return 0;
	case TTM_PL_VRAM:
		mem->bus.offset = mem->start << PAGE_SHIFT;
		mem->bus.base = pci_resource_start(cirrus->dev->pdev, 0);
		mem->bus.is_iomem = true;
		break;
	default:
		return -EINVAL;
		break;
	}
	return 0;
}

static void cirrus_ttm_io_mem_free(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem)
{
}

static void cirrus_ttm_backend_destroy(struct ttm_tt *tt)
{
	ttm_tt_fini(tt);
	kfree(tt);
}

static struct ttm_backend_func cirrus_tt_backend_func = {
	.destroy = &cirrus_ttm_backend_destroy,
};


static struct ttm_tt *cirrus_ttm_tt_create(struct ttm_bo_device *bdev,
				 unsigned long size, uint32_t page_flags,
				 struct page *dummy_read_page)
{
	struct ttm_tt *tt;

	tt = kzalloc(sizeof(struct ttm_tt), GFP_KERNEL);
	if (tt == NULL)
		return NULL;
	tt->func = &cirrus_tt_backend_func;
	if (ttm_tt_init(tt, bdev, size, page_flags, dummy_read_page)) {
		kfree(tt);
		return NULL;
	}
	return tt;
}

static int cirrus_ttm_tt_populate(struct ttm_tt *ttm)
{
	return ttm_pool_populate(ttm);
}

static void cirrus_ttm_tt_unpopulate(struct ttm_tt *ttm)
{
	ttm_pool_unpopulate(ttm);
}

struct ttm_bo_driver cirrus_bo_driver = {
	.ttm_tt_create = cirrus_ttm_tt_create,
	.ttm_tt_populate = cirrus_ttm_tt_populate,
	.ttm_tt_unpopulate = cirrus_ttm_tt_unpopulate,
	.init_mem_type = cirrus_bo_init_mem_type,
	.evict_flags = cirrus_bo_evict_flags,
	.move = NULL,
	.verify_access = cirrus_bo_verify_access,
	.io_mem_reserve = &cirrus_ttm_io_mem_reserve,
	.io_mem_free = &cirrus_ttm_io_mem_free,
	.lru_tail = &ttm_bo_default_lru_tail,
	.swap_lru_tail = &ttm_bo_default_swap_lru_tail,
};

int cirrus_mm_init(struct cirrus_device *cirrus)
{
	int ret;
	struct drm_device *dev = cirrus->dev;
	struct ttm_bo_device *bdev = &cirrus->ttm.bdev;

	ret = cirrus_ttm_global_init(cirrus);
	if (ret)
		return ret;

	ret = ttm_bo_device_init(&cirrus->ttm.bdev,
				 cirrus->ttm.bo_global_ref.ref.object,
				 &cirrus_bo_driver,
				 dev->anon_inode->i_mapping,
				 DRM_FILE_PAGE_OFFSET,
				 true);
	if (ret) {
		DRM_ERROR("Error initialising bo driver; %d\n", ret);
		return ret;
	}

	ret = ttm_bo_init_mm(bdev, TTM_PL_VRAM,
			     cirrus->mc.vram_size >> PAGE_SHIFT);
	if (ret) {
		DRM_ERROR("Failed ttm VRAM init: %d\n", ret);
		return ret;
	}

	cirrus->fb_mtrr = arch_phys_wc_add(pci_resource_start(dev->pdev, 0),
					   pci_resource_len(dev->pdev, 0));

	cirrus->mm_inited = true;
	return 0;
}

void cirrus_mm_fini(struct cirrus_device *cirrus)
{
	if (!cirrus->mm_inited)
		return;

	ttm_bo_device_release(&cirrus->ttm.bdev);

	cirrus_ttm_global_release(cirrus);

	arch_phys_wc_del(cirrus->fb_mtrr);
	cirrus->fb_mtrr = 0;
}

void cirrus_ttm_placement(struct cirrus_bo *bo, int domain)
{
	u32 c = 0;
	unsigned i;
	bo->placement.placement = bo->placements;
	bo->placement.busy_placement = bo->placements;
	if (domain & TTM_PL_FLAG_VRAM)
		bo->placements[c++].flags = TTM_PL_FLAG_WC | TTM_PL_FLAG_UNCACHED | TTM_PL_FLAG_VRAM;
	if (domain & TTM_PL_FLAG_SYSTEM)
		bo->placements[c++].flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM;
	if (!c)
		bo->placements[c++].flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM;
	bo->placement.num_placement = c;
	bo->placement.num_busy_placement = c;
	for (i = 0; i < c; ++i) {
		bo->placements[i].fpfn = 0;
		bo->placements[i].lpfn = 0;
	}
}

int cirrus_bo_create(struct drm_device *dev, int size, int align,
		  uint32_t flags, struct cirrus_bo **pcirrusbo)
{
	struct cirrus_device *cirrus = dev->dev_private;
	struct cirrus_bo *cirrusbo;
	size_t acc_size;
	int ret;

	cirrusbo = kzalloc(sizeof(struct cirrus_bo), GFP_KERNEL);
	if (!cirrusbo)
		return -ENOMEM;

	ret = drm_gem_object_init(dev, &cirrusbo->gem, size);
	if (ret) {
		kfree(cirrusbo);
		return ret;
	}

	cirrusbo->bo.bdev = &cirrus->ttm.bdev;

	cirrus_ttm_placement(cirrusbo, TTM_PL_FLAG_VRAM | TTM_PL_FLAG_SYSTEM);

	acc_size = ttm_bo_dma_acc_size(&cirrus->ttm.bdev, size,
				       sizeof(struct cirrus_bo));

	ret = ttm_bo_init(&cirrus->ttm.bdev, &cirrusbo->bo, size,
			  ttm_bo_type_device, &cirrusbo->placement,
			  align >> PAGE_SHIFT, false, NULL, acc_size,
			  NULL, NULL, cirrus_bo_ttm_destroy);
	if (ret)
		return ret;

	*pcirrusbo = cirrusbo;
	return 0;
}

static inline u64 cirrus_bo_gpu_offset(struct cirrus_bo *bo)
{
	return bo->bo.offset;
}

int cirrus_bo_pin(struct cirrus_bo *bo, u32 pl_flag, u64 *gpu_addr)
{
	int i, ret;

	if (bo->pin_count) {
		bo->pin_count++;
		if (gpu_addr)
			*gpu_addr = cirrus_bo_gpu_offset(bo);
	}

	cirrus_ttm_placement(bo, pl_flag);
	for (i = 0; i < bo->placement.num_placement; i++)
		bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT;
	ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false);
	if (ret)
		return ret;

	bo->pin_count = 1;
	if (gpu_addr)
		*gpu_addr = cirrus_bo_gpu_offset(bo);
	return 0;
}

int cirrus_bo_push_sysram(struct cirrus_bo *bo)
{
	int i, ret;
	if (!bo->pin_count) {
		DRM_ERROR("unpin bad %p\n", bo);
		return 0;
	}
	bo->pin_count--;
	if (bo->pin_count)
		return 0;

	if (bo->kmap.virtual)
		ttm_bo_kunmap(&bo->kmap);

	cirrus_ttm_placement(bo, TTM_PL_FLAG_SYSTEM);
	for (i = 0; i < bo->placement.num_placement ; i++)
		bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT;

	ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false);
	if (ret) {
		DRM_ERROR("pushing to VRAM failed\n");
		return ret;
	}
	return 0;
}

int cirrus_mmap(struct file *filp, struct vm_area_struct *vma)
{
	struct drm_file *file_priv;
	struct cirrus_device *cirrus;

	if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET))
		return -EINVAL;

	file_priv = filp->private_data;
	cirrus = file_priv->minor->dev->dev_private;
	return ttm_bo_mmap(filp, vma, &cirrus->ttm.bdev);
}
Commit	Line	Data
f9aa76a8 DA	1	/*
	2	* Copyright 2012 Red Hat Inc.
	3	*
	4	* Permission is hereby granted, free of charge, to any person obtaining a
	5	* copy of this software and associated documentation files (the
	6	* "Software"), to deal in the Software without restriction, including
	7	* without limitation the rights to use, copy, modify, merge, publish,
	8	* distribute, sub license, and/or sell copies of the Software, and to
	9	* permit persons to whom the Software is furnished to do so, subject to
	10	* the following conditions:
	11	*
	12	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	13	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	14	* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
	15	* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
	16	* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
	17	* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
	18	* USE OR OTHER DEALINGS IN THE SOFTWARE.
	19	*
	20	* The above copyright notice and this permission notice (including the
	21	* next paragraph) shall be included in all copies or substantial portions
	22	* of the Software.
	23	*
	24	*/
	25	/*
	26	* Authors: Dave Airlie <airlied@redhat.com>
	27	*/
760285e7	28	#include <drm/drmP.h>
f9aa76a8 DA	29	#include "cirrus_drv.h"
	30	#include <ttm/ttm_page_alloc.h>
	31
	32	static inline struct cirrus_device *
	33	cirrus_bdev(struct ttm_bo_device *bd)
	34	{
	35	return container_of(bd, struct cirrus_device, ttm.bdev);
	36	}
	37
	38	static int
	39	cirrus_ttm_mem_global_init(struct drm_global_reference *ref)
	40	{
	41	return ttm_mem_global_init(ref->object);
	42	}
	43
	44	static void
	45	cirrus_ttm_mem_global_release(struct drm_global_reference *ref)
	46	{
	47	ttm_mem_global_release(ref->object);
	48	}
	49
	50	static int cirrus_ttm_global_init(struct cirrus_device *cirrus)
	51	{
	52	struct drm_global_reference *global_ref;
	53	int r;
	54
	55	global_ref = &cirrus->ttm.mem_global_ref;
	56	global_ref->global_type = DRM_GLOBAL_TTM_MEM;
	57	global_ref->size = sizeof(struct ttm_mem_global);
	58	global_ref->init = &cirrus_ttm_mem_global_init;
	59	global_ref->release = &cirrus_ttm_mem_global_release;
	60	r = drm_global_item_ref(global_ref);
	61	if (r != 0) {
	62	DRM_ERROR("Failed setting up TTM memory accounting "
	63	"subsystem.\n");
	64	return r;
	65	}
	66
	67	cirrus->ttm.bo_global_ref.mem_glob =
	68	cirrus->ttm.mem_global_ref.object;
	69	global_ref = &cirrus->ttm.bo_global_ref.ref;
	70	global_ref->global_type = DRM_GLOBAL_TTM_BO;
	71	global_ref->size = sizeof(struct ttm_bo_global);
	72	global_ref->init = &ttm_bo_global_init;
	73	global_ref->release = &ttm_bo_global_release;
	74	r = drm_global_item_ref(global_ref);
	75	if (r != 0) {
	76	DRM_ERROR("Failed setting up TTM BO subsystem.\n");
	77	drm_global_item_unref(&cirrus->ttm.mem_global_ref);
	78	return r;
	79	}
	80	return 0;
	81	}
	82
cdd73306	83	static void
f9aa76a8 DA	84	cirrus_ttm_global_release(struct cirrus_device *cirrus)
	85	{
	86	if (cirrus->ttm.mem_global_ref.release == NULL)
	87	return;
	88
	89	drm_global_item_unref(&cirrus->ttm.bo_global_ref.ref);
	90	drm_global_item_unref(&cirrus->ttm.mem_global_ref);
	91	cirrus->ttm.mem_global_ref.release = NULL;
	92	}
	93
	94
	95	static void cirrus_bo_ttm_destroy(struct ttm_buffer_object *tbo)
	96	{
	97	struct cirrus_bo *bo;
	98
	99	bo = container_of(tbo, struct cirrus_bo, bo);
	100
	101	drm_gem_object_release(&bo->gem);
	102	kfree(bo);
	103	}
	104
cdd73306	105	static bool cirrus_ttm_bo_is_cirrus_bo(struct ttm_buffer_object *bo)
f9aa76a8 DA	106	{
	107	if (bo->destroy == &cirrus_bo_ttm_destroy)
	108	return true;
	109	return false;
	110	}
	111
	112	static int
	113	cirrus_bo_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
	114	struct ttm_mem_type_manager *man)
	115	{
	116	switch (type) {
	117	case TTM_PL_SYSTEM:
	118	man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
	119	man->available_caching = TTM_PL_MASK_CACHING;
	120	man->default_caching = TTM_PL_FLAG_CACHED;
	121	break;
	122	case TTM_PL_VRAM:
	123	man->func = &ttm_bo_manager_func;
	124	man->flags = TTM_MEMTYPE_FLAG_FIXED \|
	125	TTM_MEMTYPE_FLAG_MAPPABLE;
	126	man->available_caching = TTM_PL_FLAG_UNCACHED \|
	127	TTM_PL_FLAG_WC;
	128	man->default_caching = TTM_PL_FLAG_WC;
	129	break;
	130	default:
	131	DRM_ERROR("Unsupported memory type %u\n", (unsigned)type);
	132	return -EINVAL;
	133	}
	134	return 0;
	135	}
	136
	137	static void
	138	cirrus_bo_evict_flags(struct ttm_buffer_object bo, struct ttm_placement pl)
	139	{
	140	struct cirrus_bo *cirrusbo = cirrus_bo(bo);
	141
	142	if (!cirrus_ttm_bo_is_cirrus_bo(bo))
	143	return;
	144
	145	cirrus_ttm_placement(cirrusbo, TTM_PL_FLAG_SYSTEM);
	146	*pl = cirrusbo->placement;
	147	}
	148
	149	static int cirrus_bo_verify_access(struct ttm_buffer_object bo, struct file filp)
	150	{
acb46527 DH	151	struct cirrus_bo *cirrusbo = cirrus_bo(bo);
	152
	153	return drm_vma_node_verify_access(&cirrusbo->gem.vma_node, filp);
f9aa76a8 DA	154	}
	155
	156	static int cirrus_ttm_io_mem_reserve(struct ttm_bo_device *bdev,
	157	struct ttm_mem_reg *mem)
	158	{
	159	struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
	160	struct cirrus_device *cirrus = cirrus_bdev(bdev);
	161
	162	mem->bus.addr = NULL;
	163	mem->bus.offset = 0;
	164	mem->bus.size = mem->num_pages << PAGE_SHIFT;
	165	mem->bus.base = 0;
	166	mem->bus.is_iomem = false;
	167	if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE))
	168	return -EINVAL;
	169	switch (mem->mem_type) {
	170	case TTM_PL_SYSTEM:
	171	/* system memory */
	172	return 0;
	173	case TTM_PL_VRAM:
	174	mem->bus.offset = mem->start << PAGE_SHIFT;
	175	mem->bus.base = pci_resource_start(cirrus->dev->pdev, 0);
	176	mem->bus.is_iomem = true;
	177	break;
	178	default:
	179	return -EINVAL;
	180	break;
	181	}
	182	return 0;
	183	}
	184
	185	static void cirrus_ttm_io_mem_free(struct ttm_bo_device bdev, struct ttm_mem_reg mem)
	186	{
	187	}
	188
f9aa76a8 DA	189	static void cirrus_ttm_backend_destroy(struct ttm_tt *tt)
	190	{
	191	ttm_tt_fini(tt);
	192	kfree(tt);
	193	}
	194
	195	static struct ttm_backend_func cirrus_tt_backend_func = {
	196	.destroy = &cirrus_ttm_backend_destroy,
	197	};
	198
	199
cdd73306	200	static struct ttm_tt cirrus_ttm_tt_create(struct ttm_bo_device bdev,
f9aa76a8 DA	201	unsigned long size, uint32_t page_flags,
	202	struct page *dummy_read_page)
	203	{
	204	struct ttm_tt *tt;
	205
	206	tt = kzalloc(sizeof(struct ttm_tt), GFP_KERNEL);
	207	if (tt == NULL)
	208	return NULL;
	209	tt->func = &cirrus_tt_backend_func;
	210	if (ttm_tt_init(tt, bdev, size, page_flags, dummy_read_page)) {
	211	kfree(tt);
	212	return NULL;
	213	}
	214	return tt;
	215	}
	216
	217	static int cirrus_ttm_tt_populate(struct ttm_tt *ttm)
	218	{
	219	return ttm_pool_populate(ttm);
	220	}
	221
	222	static void cirrus_ttm_tt_unpopulate(struct ttm_tt *ttm)
	223	{
	224	ttm_pool_unpopulate(ttm);
	225	}
	226
	227	struct ttm_bo_driver cirrus_bo_driver = {
	228	.ttm_tt_create = cirrus_ttm_tt_create,
	229	.ttm_tt_populate = cirrus_ttm_tt_populate,
	230	.ttm_tt_unpopulate = cirrus_ttm_tt_unpopulate,
	231	.init_mem_type = cirrus_bo_init_mem_type,
	232	.evict_flags = cirrus_bo_evict_flags,
18885778	233	.move = NULL,
f9aa76a8 DA	234	.verify_access = cirrus_bo_verify_access,
	235	.io_mem_reserve = &cirrus_ttm_io_mem_reserve,
	236	.io_mem_free = &cirrus_ttm_io_mem_free,
98c2872a CK	237	.lru_tail = &ttm_bo_default_lru_tail,
98c2872a CK	238	.swap_lru_tail = &ttm_bo_default_swap_lru_tail,
f9aa76a8 DA	239	};
	240
	241	int cirrus_mm_init(struct cirrus_device *cirrus)
	242	{
	243	int ret;
	244	struct drm_device *dev = cirrus->dev;
	245	struct ttm_bo_device *bdev = &cirrus->ttm.bdev;
	246
	247	ret = cirrus_ttm_global_init(cirrus);
	248	if (ret)
	249	return ret;
	250
	251	ret = ttm_bo_device_init(&cirrus->ttm.bdev,
	252	cirrus->ttm.bo_global_ref.ref.object,
44d847b7 DH	253	&cirrus_bo_driver,
	254	dev->anon_inode->i_mapping,
	255	DRM_FILE_PAGE_OFFSET,
f9aa76a8 DA	256	true);
	257	if (ret) {
	258	DRM_ERROR("Error initialising bo driver; %d\n", ret);
	259	return ret;
	260	}
	261
	262	ret = ttm_bo_init_mm(bdev, TTM_PL_VRAM,
	263	cirrus->mc.vram_size >> PAGE_SHIFT);
	264	if (ret) {
	265	DRM_ERROR("Failed ttm VRAM init: %d\n", ret);
	266	return ret;
	267	}
	268
247d36d7 AL	269	cirrus->fb_mtrr = arch_phys_wc_add(pci_resource_start(dev->pdev, 0),
247d36d7 AL	270	pci_resource_len(dev->pdev, 0));
f9aa76a8	271
93b4cc56	272	cirrus->mm_inited = true;
f9aa76a8 DA	273	return 0;
	274	}
	275
	276	void cirrus_mm_fini(struct cirrus_device *cirrus)
	277	{
93b4cc56 DA	278	if (!cirrus->mm_inited)
	279	return;
	280
f9aa76a8 DA	281	ttm_bo_device_release(&cirrus->ttm.bdev);
	282
	283	cirrus_ttm_global_release(cirrus);
	284
247d36d7 AL	285	arch_phys_wc_del(cirrus->fb_mtrr);
247d36d7 AL	286	cirrus->fb_mtrr = 0;
f9aa76a8 DA	287	}
	288
	289	void cirrus_ttm_placement(struct cirrus_bo *bo, int domain)
	290	{
	291	u32 c = 0;
f1217ed0	292	unsigned i;
f9aa76a8 DA	293	bo->placement.placement = bo->placements;
	294	bo->placement.busy_placement = bo->placements;
	295	if (domain & TTM_PL_FLAG_VRAM)
f1217ed0	296	bo->placements[c++].flags = TTM_PL_FLAG_WC \| TTM_PL_FLAG_UNCACHED \| TTM_PL_FLAG_VRAM;
f9aa76a8	297	if (domain & TTM_PL_FLAG_SYSTEM)
f1217ed0	298	bo->placements[c++].flags = TTM_PL_MASK_CACHING \| TTM_PL_FLAG_SYSTEM;
f9aa76a8	299	if (!c)
f1217ed0	300	bo->placements[c++].flags = TTM_PL_MASK_CACHING \| TTM_PL_FLAG_SYSTEM;
f9aa76a8 DA	301	bo->placement.num_placement = c;
f9aa76a8 DA	302	bo->placement.num_busy_placement = c;
f1217ed0 CK	303	for (i = 0; i < c; ++i) {
	304	bo->placements[i].fpfn = 0;
	305	bo->placements[i].lpfn = 0;
	306	}
f9aa76a8 DA	307	}
f9aa76a8 DA	308
f9aa76a8 DA	309	int cirrus_bo_create(struct drm_device *dev, int size, int align,
	310	uint32_t flags, struct cirrus_bo **pcirrusbo)
	311	{
	312	struct cirrus_device *cirrus = dev->dev_private;
	313	struct cirrus_bo *cirrusbo;
	314	size_t acc_size;
	315	int ret;
	316
	317	cirrusbo = kzalloc(sizeof(struct cirrus_bo), GFP_KERNEL);
	318	if (!cirrusbo)
	319	return -ENOMEM;
	320
	321	ret = drm_gem_object_init(dev, &cirrusbo->gem, size);
	322	if (ret) {
	323	kfree(cirrusbo);
	324	return ret;
	325	}
	326
f9aa76a8 DA	327	cirrusbo->bo.bdev = &cirrus->ttm.bdev;
	328
	329	cirrus_ttm_placement(cirrusbo, TTM_PL_FLAG_VRAM \| TTM_PL_FLAG_SYSTEM);
	330
	331	acc_size = ttm_bo_dma_acc_size(&cirrus->ttm.bdev, size,
	332	sizeof(struct cirrus_bo));
	333
	334	ret = ttm_bo_init(&cirrus->ttm.bdev, &cirrusbo->bo, size,
	335	ttm_bo_type_device, &cirrusbo->placement,
0b91c4a1	336	align >> PAGE_SHIFT, false, NULL, acc_size,
f4f4e3e3	337	NULL, NULL, cirrus_bo_ttm_destroy);
f9aa76a8 DA	338	if (ret)
	339	return ret;
	340
	341	*pcirrusbo = cirrusbo;
	342	return 0;
	343	}
	344
	345	static inline u64 cirrus_bo_gpu_offset(struct cirrus_bo *bo)
	346	{
	347	return bo->bo.offset;
	348	}
	349
	350	int cirrus_bo_pin(struct cirrus_bo bo, u32 pl_flag, u64 gpu_addr)
	351	{
	352	int i, ret;
	353
	354	if (bo->pin_count) {
	355	bo->pin_count++;
	356	if (gpu_addr)
	357	*gpu_addr = cirrus_bo_gpu_offset(bo);
	358	}
	359
	360	cirrus_ttm_placement(bo, pl_flag);
	361	for (i = 0; i < bo->placement.num_placement; i++)
f1217ed0	362	bo->placements[i].flags \|= TTM_PL_FLAG_NO_EVICT;
97a875cb	363	ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false);
f9aa76a8 DA	364	if (ret)
	365	return ret;
	366
	367	bo->pin_count = 1;
	368	if (gpu_addr)
	369	*gpu_addr = cirrus_bo_gpu_offset(bo);
	370	return 0;
	371	}
	372
f9aa76a8 DA	373	int cirrus_bo_push_sysram(struct cirrus_bo *bo)
	374	{
	375	int i, ret;
	376	if (!bo->pin_count) {
	377	DRM_ERROR("unpin bad %p\n", bo);
	378	return 0;
	379	}
	380	bo->pin_count--;
	381	if (bo->pin_count)
	382	return 0;
	383
	384	if (bo->kmap.virtual)
	385	ttm_bo_kunmap(&bo->kmap);
	386
	387	cirrus_ttm_placement(bo, TTM_PL_FLAG_SYSTEM);
	388	for (i = 0; i < bo->placement.num_placement ; i++)
f1217ed0	389	bo->placements[i].flags \|= TTM_PL_FLAG_NO_EVICT;
f9aa76a8	390
97a875cb	391	ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false);
f9aa76a8 DA	392	if (ret) {
	393	DRM_ERROR("pushing to VRAM failed\n");
	394	return ret;
	395	}
	396	return 0;
	397	}
	398
	399	int cirrus_mmap(struct file filp, struct vm_area_struct vma)
	400	{
	401	struct drm_file *file_priv;
	402	struct cirrus_device *cirrus;
	403
	404	if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET))
884c6dab	405	return -EINVAL;
f9aa76a8 DA	406
	407	file_priv = filp->private_data;
	408	cirrus = file_priv->minor->dev->dev_private;
	409	return ttm_bo_mmap(filp, vma, &cirrus->ttm.bdev);
	410	}