[linux-2.6-block.git] / drivers / gpu / drm / qxl / qxl_ttm.c

/*
 * Copyright 2013 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, 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 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
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) 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: Dave Airlie
 *          Alon Levy
 */

#include <ttm/ttm_bo_api.h>
#include <ttm/ttm_bo_driver.h>
#include <ttm/ttm_placement.h>
#include <ttm/ttm_page_alloc.h>
#include <ttm/ttm_module.h>
#include <drm/drmP.h>
#include <drm/drm.h>
#include <drm/qxl_drm.h>
#include "qxl_drv.h"
#include "qxl_object.h"

#include <linux/delay.h>
static int qxl_ttm_debugfs_init(struct qxl_device *qdev);

static struct qxl_device *qxl_get_qdev(struct ttm_bo_device *bdev)
{
	struct qxl_mman *mman;
	struct qxl_device *qdev;

	mman = container_of(bdev, struct qxl_mman, bdev);
	qdev = container_of(mman, struct qxl_device, mman);
	return qdev;
}

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

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

static int qxl_ttm_global_init(struct qxl_device *qdev)
{
	struct drm_global_reference *global_ref;
	int r;

	qdev->mman.mem_global_referenced = false;
	global_ref = &qdev->mman.mem_global_ref;
	global_ref->global_type = DRM_GLOBAL_TTM_MEM;
	global_ref->size = sizeof(struct ttm_mem_global);
	global_ref->init = &qxl_ttm_mem_global_init;
	global_ref->release = &qxl_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;
	}

	qdev->mman.bo_global_ref.mem_glob =
		qdev->mman.mem_global_ref.object;
	global_ref = &qdev->mman.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(&qdev->mman.mem_global_ref);
		return r;
	}

	qdev->mman.mem_global_referenced = true;
	return 0;
}

static void qxl_ttm_global_fini(struct qxl_device *qdev)
{
	if (qdev->mman.mem_global_referenced) {
		drm_global_item_unref(&qdev->mman.bo_global_ref.ref);
		drm_global_item_unref(&qdev->mman.mem_global_ref);
		qdev->mman.mem_global_referenced = false;
	}
}

static struct vm_operations_struct qxl_ttm_vm_ops;
static const struct vm_operations_struct *ttm_vm_ops;

static int qxl_ttm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
{
	struct ttm_buffer_object *bo;
	int r;

	bo = (struct ttm_buffer_object *)vma->vm_private_data;
	if (bo == NULL)
		return VM_FAULT_NOPAGE;
	r = ttm_vm_ops->fault(vma, vmf);
	return r;
}

int qxl_mmap(struct file *filp, struct vm_area_struct *vma)
{
	struct drm_file *file_priv;
	struct qxl_device *qdev;
	int r;

	if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET)) {
		pr_info("%s: vma->vm_pgoff (%ld) < DRM_FILE_PAGE_OFFSET\n",
			__func__, vma->vm_pgoff);
		return -EINVAL;
	}

	file_priv = filp->private_data;
	qdev = file_priv->minor->dev->dev_private;
	if (qdev == NULL) {
		DRM_ERROR(
		 "filp->private_data->minor->dev->dev_private == NULL\n");
		return -EINVAL;
	}
	QXL_INFO(qdev, "%s: filp->private_data = 0x%p, vma->vm_pgoff = %lx\n",
		 __func__, filp->private_data, vma->vm_pgoff);

	r = ttm_bo_mmap(filp, vma, &qdev->mman.bdev);
	if (unlikely(r != 0))
		return r;
	if (unlikely(ttm_vm_ops == NULL)) {
		ttm_vm_ops = vma->vm_ops;
		qxl_ttm_vm_ops = *ttm_vm_ops;
		qxl_ttm_vm_ops.fault = &qxl_ttm_fault;
	}
	vma->vm_ops = &qxl_ttm_vm_ops;
	return 0;
}

static int qxl_invalidate_caches(struct ttm_bo_device *bdev, uint32_t flags)
{
	return 0;
}

static int qxl_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
			     struct ttm_mem_type_manager *man)
{
	switch (type) {
	case TTM_PL_SYSTEM:
		/* System memory */
		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:
	case TTM_PL_PRIV0:
		/* "On-card" video ram */
		man->func = &ttm_bo_manager_func;
		man->gpu_offset = 0;
		man->flags = TTM_MEMTYPE_FLAG_FIXED |
			     TTM_MEMTYPE_FLAG_MAPPABLE;
		man->available_caching = TTM_PL_MASK_CACHING;
		man->default_caching = TTM_PL_FLAG_CACHED;
		break;
	default:
		DRM_ERROR("Unsupported memory type %u\n", (unsigned)type);
		return -EINVAL;
	}
	return 0;
}

static void qxl_evict_flags(struct ttm_buffer_object *bo,
				struct ttm_placement *placement)
{
	struct qxl_bo *qbo;
	static struct ttm_place placements = {
		.fpfn = 0,
		.lpfn = 0,
		.flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM
	};

	if (!qxl_ttm_bo_is_qxl_bo(bo)) {
		placement->placement = &placements;
		placement->busy_placement = &placements;
		placement->num_placement = 1;
		placement->num_busy_placement = 1;
		return;
	}
	qbo = to_qxl_bo(bo);
	qxl_ttm_placement_from_domain(qbo, QXL_GEM_DOMAIN_CPU, false);
	*placement = qbo->placement;
}

static int qxl_verify_access(struct ttm_buffer_object *bo, struct file *filp)
{
	struct qxl_bo *qbo = to_qxl_bo(bo);

	return drm_vma_node_verify_access(&qbo->gem_base.vma_node, filp);
}

static int qxl_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 qxl_device *qdev = qxl_get_qdev(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.is_iomem = true;
		mem->bus.base = qdev->vram_base;
		mem->bus.offset = mem->start << PAGE_SHIFT;
		break;
	case TTM_PL_PRIV0:
		mem->bus.is_iomem = true;
		mem->bus.base = qdev->surfaceram_base;
		mem->bus.offset = mem->start << PAGE_SHIFT;
		break;
	default:
		return -EINVAL;
	}
	return 0;
}

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

/*
 * TTM backend functions.
 */
struct qxl_ttm_tt {
	struct ttm_dma_tt		ttm;
	struct qxl_device		*qdev;
	u64				offset;
};

static int qxl_ttm_backend_bind(struct ttm_tt *ttm,
				struct ttm_mem_reg *bo_mem)
{
	struct qxl_ttm_tt *gtt = (void *)ttm;

	gtt->offset = (unsigned long)(bo_mem->start << PAGE_SHIFT);
	if (!ttm->num_pages) {
		WARN(1, "nothing to bind %lu pages for mreg %p back %p!\n",
		     ttm->num_pages, bo_mem, ttm);
	}
	/* Not implemented */
	return -1;
}

static int qxl_ttm_backend_unbind(struct ttm_tt *ttm)
{
	/* Not implemented */
	return -1;
}

static void qxl_ttm_backend_destroy(struct ttm_tt *ttm)
{
	struct qxl_ttm_tt *gtt = (void *)ttm;

	ttm_dma_tt_fini(&gtt->ttm);
	kfree(gtt);
}

static struct ttm_backend_func qxl_backend_func = {
	.bind = &qxl_ttm_backend_bind,
	.unbind = &qxl_ttm_backend_unbind,
	.destroy = &qxl_ttm_backend_destroy,
};

static int qxl_ttm_tt_populate(struct ttm_tt *ttm)
{
	int r;

	if (ttm->state != tt_unpopulated)
		return 0;

	r = ttm_pool_populate(ttm);
	if (r)
		return r;

	return 0;
}

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

static struct ttm_tt *qxl_ttm_tt_create(struct ttm_bo_device *bdev,
					unsigned long size, uint32_t page_flags,
					struct page *dummy_read_page)
{
	struct qxl_device *qdev;
	struct qxl_ttm_tt *gtt;

	qdev = qxl_get_qdev(bdev);
	gtt = kzalloc(sizeof(struct qxl_ttm_tt), GFP_KERNEL);
	if (gtt == NULL)
		return NULL;
	gtt->ttm.ttm.func = &qxl_backend_func;
	gtt->qdev = qdev;
	if (ttm_dma_tt_init(&gtt->ttm, bdev, size, page_flags,
			    dummy_read_page)) {
		kfree(gtt);
		return NULL;
	}
	return &gtt->ttm.ttm;
}

static void qxl_move_null(struct ttm_buffer_object *bo,
			     struct ttm_mem_reg *new_mem)
{
	struct ttm_mem_reg *old_mem = &bo->mem;

	BUG_ON(old_mem->mm_node != NULL);
	*old_mem = *new_mem;
	new_mem->mm_node = NULL;
}

static int qxl_bo_move(struct ttm_buffer_object *bo,
		       bool evict, bool interruptible,
		       bool no_wait_gpu,
		       struct ttm_mem_reg *new_mem)
{
	struct ttm_mem_reg *old_mem = &bo->mem;
	if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) {
		qxl_move_null(bo, new_mem);
		return 0;
	}
	return ttm_bo_move_memcpy(bo, evict, no_wait_gpu, new_mem);
}

static void qxl_bo_move_notify(struct ttm_buffer_object *bo,
			       struct ttm_mem_reg *new_mem)
{
	struct qxl_bo *qbo;
	struct qxl_device *qdev;

	if (!qxl_ttm_bo_is_qxl_bo(bo))
		return;
	qbo = to_qxl_bo(bo);
	qdev = qbo->gem_base.dev->dev_private;

	if (bo->mem.mem_type == TTM_PL_PRIV0 && qbo->surface_id)
		qxl_surface_evict(qdev, qbo, new_mem ? true : false);
}

static struct ttm_bo_driver qxl_bo_driver = {
	.ttm_tt_create = &qxl_ttm_tt_create,
	.ttm_tt_populate = &qxl_ttm_tt_populate,
	.ttm_tt_unpopulate = &qxl_ttm_tt_unpopulate,
	.invalidate_caches = &qxl_invalidate_caches,
	.init_mem_type = &qxl_init_mem_type,
	.evict_flags = &qxl_evict_flags,
	.move = &qxl_bo_move,
	.verify_access = &qxl_verify_access,
	.io_mem_reserve = &qxl_ttm_io_mem_reserve,
	.io_mem_free = &qxl_ttm_io_mem_free,
	.move_notify = &qxl_bo_move_notify,
	.lru_tail = &ttm_bo_default_lru_tail,
	.swap_lru_tail = &ttm_bo_default_swap_lru_tail,
};

int qxl_ttm_init(struct qxl_device *qdev)
{
	int r;
	int num_io_pages; /* != rom->num_io_pages, we include surface0 */

	r = qxl_ttm_global_init(qdev);
	if (r)
		return r;
	/* No others user of address space so set it to 0 */
	r = ttm_bo_device_init(&qdev->mman.bdev,
			       qdev->mman.bo_global_ref.ref.object,
			       &qxl_bo_driver,
			       qdev->ddev->anon_inode->i_mapping,
			       DRM_FILE_PAGE_OFFSET, 0);
	if (r) {
		DRM_ERROR("failed initializing buffer object driver(%d).\n", r);
		return r;
	}
	/* NOTE: this includes the framebuffer (aka surface 0) */
	num_io_pages = qdev->rom->ram_header_offset / PAGE_SIZE;
	r = ttm_bo_init_mm(&qdev->mman.bdev, TTM_PL_VRAM,
			   num_io_pages);
	if (r) {
		DRM_ERROR("Failed initializing VRAM heap.\n");
		return r;
	}
	r = ttm_bo_init_mm(&qdev->mman.bdev, TTM_PL_PRIV0,
			   qdev->surfaceram_size / PAGE_SIZE);
	if (r) {
		DRM_ERROR("Failed initializing Surfaces heap.\n");
		return r;
	}
	DRM_INFO("qxl: %uM of VRAM memory size\n",
		 (unsigned)qdev->vram_size / (1024 * 1024));
	DRM_INFO("qxl: %luM of IO pages memory ready (VRAM domain)\n",
		 ((unsigned)num_io_pages * PAGE_SIZE) / (1024 * 1024));
	DRM_INFO("qxl: %uM of Surface memory size\n",
		 (unsigned)qdev->surfaceram_size / (1024 * 1024));
	r = qxl_ttm_debugfs_init(qdev);
	if (r) {
		DRM_ERROR("Failed to init debugfs\n");
		return r;
	}
	return 0;
}

void qxl_ttm_fini(struct qxl_device *qdev)
{
	ttm_bo_clean_mm(&qdev->mman.bdev, TTM_PL_VRAM);
	ttm_bo_clean_mm(&qdev->mman.bdev, TTM_PL_PRIV0);
	ttm_bo_device_release(&qdev->mman.bdev);
	qxl_ttm_global_fini(qdev);
	DRM_INFO("qxl: ttm finalized\n");
}


#define QXL_DEBUGFS_MEM_TYPES 2

#if defined(CONFIG_DEBUG_FS)
static int qxl_mm_dump_table(struct seq_file *m, void *data)
{
	struct drm_info_node *node = (struct drm_info_node *)m->private;
	struct drm_mm *mm = (struct drm_mm *)node->info_ent->data;
	struct drm_device *dev = node->minor->dev;
	struct qxl_device *rdev = dev->dev_private;
	int ret;
	struct ttm_bo_global *glob = rdev->mman.bdev.glob;

	spin_lock(&glob->lru_lock);
	ret = drm_mm_dump_table(m, mm);
	spin_unlock(&glob->lru_lock);
	return ret;
}
#endif

static int qxl_ttm_debugfs_init(struct qxl_device *qdev)
{
#if defined(CONFIG_DEBUG_FS)
	static struct drm_info_list qxl_mem_types_list[QXL_DEBUGFS_MEM_TYPES];
	static char qxl_mem_types_names[QXL_DEBUGFS_MEM_TYPES][32];
	unsigned i;

	for (i = 0; i < QXL_DEBUGFS_MEM_TYPES; i++) {
		if (i == 0)
			sprintf(qxl_mem_types_names[i], "qxl_mem_mm");
		else
			sprintf(qxl_mem_types_names[i], "qxl_surf_mm");
		qxl_mem_types_list[i].name = qxl_mem_types_names[i];
		qxl_mem_types_list[i].show = &qxl_mm_dump_table;
		qxl_mem_types_list[i].driver_features = 0;
		if (i == 0)
			qxl_mem_types_list[i].data = qdev->mman.bdev.man[TTM_PL_VRAM].priv;
		else
			qxl_mem_types_list[i].data = qdev->mman.bdev.man[TTM_PL_PRIV0].priv;

	}
	return qxl_debugfs_add_files(qdev, qxl_mem_types_list, i);
#else
	return 0;
#endif
}
Commit	Line	Data
f64122c1 DA	1	/*
	2	* Copyright 2013 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 "Software"),
	6	* to deal in the Software without restriction, including without limitation
	7	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	8	* and/or sell copies of the Software, and to permit persons to whom the
	9	* Software is furnished to do so, subject to the following conditions:
	10	*
	11	* The above copyright notice and this permission notice shall be included in
	12	* all copies or substantial portions of the Software.
	13	*
	14	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	15	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	16	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	17	* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
	18	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	19	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
	20	* OTHER DEALINGS IN THE SOFTWARE.
	21	*
	22	* Authors: Dave Airlie
	23	* Alon Levy
	24	*/
	25
	26	#include <ttm/ttm_bo_api.h>
	27	#include <ttm/ttm_bo_driver.h>
	28	#include <ttm/ttm_placement.h>
	29	#include <ttm/ttm_page_alloc.h>
	30	#include <ttm/ttm_module.h>
	31	#include <drm/drmP.h>
	32	#include <drm/drm.h>
	33	#include <drm/qxl_drm.h>
	34	#include "qxl_drv.h"
	35	#include "qxl_object.h"
	36
	37	#include <linux/delay.h>
	38	static int qxl_ttm_debugfs_init(struct qxl_device *qdev);
	39
	40	static struct qxl_device qxl_get_qdev(struct ttm_bo_device bdev)
	41	{
	42	struct qxl_mman *mman;
	43	struct qxl_device *qdev;
	44
	45	mman = container_of(bdev, struct qxl_mman, bdev);
	46	qdev = container_of(mman, struct qxl_device, mman);
	47	return qdev;
	48	}
	49
	50	static int qxl_ttm_mem_global_init(struct drm_global_reference *ref)
	51	{
	52	return ttm_mem_global_init(ref->object);
	53	}
	54
	55	static void qxl_ttm_mem_global_release(struct drm_global_reference *ref)
	56	{
	57	ttm_mem_global_release(ref->object);
	58	}
	59
	60	static int qxl_ttm_global_init(struct qxl_device *qdev)
	61	{
	62	struct drm_global_reference *global_ref;
	63	int r;
	64
65	qdev->mman.mem_global_referenced = false;
66	global_ref = &qdev->mman.mem_global_ref;
67	global_ref->global_type = DRM_GLOBAL_TTM_MEM;
68	global_ref->size = sizeof(struct ttm_mem_global);
69	global_ref->init = &qxl_ttm_mem_global_init;
70	global_ref->release = &qxl_ttm_mem_global_release;
71
72	r = drm_global_item_ref(global_ref);
73	if (r != 0) {
74	DRM_ERROR("Failed setting up TTM memory accounting "
75	"subsystem.\n");
76	return r;
77	}
78
79	qdev->mman.bo_global_ref.mem_glob =
80	qdev->mman.mem_global_ref.object;
81	global_ref = &qdev->mman.bo_global_ref.ref;
82	global_ref->global_type = DRM_GLOBAL_TTM_BO;
83	global_ref->size = sizeof(struct ttm_bo_global);
84	global_ref->init = &ttm_bo_global_init;
85	global_ref->release = &ttm_bo_global_release;
86	r = drm_global_item_ref(global_ref);
87	if (r != 0) {
88	DRM_ERROR("Failed setting up TTM BO subsystem.\n");
89	drm_global_item_unref(&qdev->mman.mem_global_ref);
90	return r;
91	}
92
93	qdev->mman.mem_global_referenced = true;
94	return 0;
95	}
96
97	static void qxl_ttm_global_fini(struct qxl_device *qdev)
98	{
99	if (qdev->mman.mem_global_referenced) {
100	drm_global_item_unref(&qdev->mman.bo_global_ref.ref);
101	drm_global_item_unref(&qdev->mman.mem_global_ref);
102	qdev->mman.mem_global_referenced = false;
103	}
104	}
105
106	static struct vm_operations_struct qxl_ttm_vm_ops;
107	static const struct vm_operations_struct *ttm_vm_ops;
108
109	static int qxl_ttm_fault(struct vm_area_struct vma, struct vm_fault vmf)
110	{
111	struct ttm_buffer_object *bo;
f64122c1 DA	112	int r;
	113
	114	bo = (struct ttm_buffer_object *)vma->vm_private_data;
	115	if (bo == NULL)
	116	return VM_FAULT_NOPAGE;
f64122c1 DA	117	r = ttm_vm_ops->fault(vma, vmf);
	118	return r;
	119	}
	120
	121	int qxl_mmap(struct file filp, struct vm_area_struct vma)
	122	{
	123	struct drm_file *file_priv;
	124	struct qxl_device *qdev;
	125	int r;
	126
	127	if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET)) {
	128	pr_info("%s: vma->vm_pgoff (%ld) < DRM_FILE_PAGE_OFFSET\n",
	129	__func__, vma->vm_pgoff);
884c6dab	130	return -EINVAL;
f64122c1 DA	131	}
	132
	133	file_priv = filp->private_data;
	134	qdev = file_priv->minor->dev->dev_private;
	135	if (qdev == NULL) {
	136	DRM_ERROR(
	137	"filp->private_data->minor->dev->dev_private == NULL\n");
	138	return -EINVAL;
	139	}
	140	QXL_INFO(qdev, "%s: filp->private_data = 0x%p, vma->vm_pgoff = %lx\n",
	141	__func__, filp->private_data, vma->vm_pgoff);
	142
	143	r = ttm_bo_mmap(filp, vma, &qdev->mman.bdev);
	144	if (unlikely(r != 0))
	145	return r;
	146	if (unlikely(ttm_vm_ops == NULL)) {
	147	ttm_vm_ops = vma->vm_ops;
	148	qxl_ttm_vm_ops = *ttm_vm_ops;
	149	qxl_ttm_vm_ops.fault = &qxl_ttm_fault;
	150	}
	151	vma->vm_ops = &qxl_ttm_vm_ops;
	152	return 0;
	153	}
	154
	155	static int qxl_invalidate_caches(struct ttm_bo_device *bdev, uint32_t flags)
	156	{
	157	return 0;
	158	}
	159
	160	static int qxl_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
	161	struct ttm_mem_type_manager *man)
	162	{
f64122c1 DA	163	switch (type) {
	164	case TTM_PL_SYSTEM:
	165	/* System memory */
	166	man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
	167	man->available_caching = TTM_PL_MASK_CACHING;
	168	man->default_caching = TTM_PL_FLAG_CACHED;
	169	break;
	170	case TTM_PL_VRAM:
	171	case TTM_PL_PRIV0:
	172	/* "On-card" video ram */
	173	man->func = &ttm_bo_manager_func;
	174	man->gpu_offset = 0;
	175	man->flags = TTM_MEMTYPE_FLAG_FIXED \|
	176	TTM_MEMTYPE_FLAG_MAPPABLE;
	177	man->available_caching = TTM_PL_MASK_CACHING;
	178	man->default_caching = TTM_PL_FLAG_CACHED;
	179	break;
	180	default:
	181	DRM_ERROR("Unsupported memory type %u\n", (unsigned)type);
	182	return -EINVAL;
	183	}
	184	return 0;
	185	}
	186
	187	static void qxl_evict_flags(struct ttm_buffer_object *bo,
	188	struct ttm_placement *placement)
	189	{
	190	struct qxl_bo *qbo;
f1217ed0 CK	191	static struct ttm_place placements = {
	192	.fpfn = 0,
	193	.lpfn = 0,
	194	.flags = TTM_PL_MASK_CACHING \| TTM_PL_FLAG_SYSTEM
	195	};
f64122c1 DA	196
f64122c1 DA	197	if (!qxl_ttm_bo_is_qxl_bo(bo)) {
f64122c1 DA	198	placement->placement = &placements;
	199	placement->busy_placement = &placements;
	200	placement->num_placement = 1;
	201	placement->num_busy_placement = 1;
	202	return;
	203	}
3ebf1c6d	204	qbo = to_qxl_bo(bo);
4f49ec92	205	qxl_ttm_placement_from_domain(qbo, QXL_GEM_DOMAIN_CPU, false);
f64122c1 DA	206	*placement = qbo->placement;
	207	}
	208
	209	static int qxl_verify_access(struct ttm_buffer_object bo, struct file filp)
	210	{
acb46527 DH	211	struct qxl_bo *qbo = to_qxl_bo(bo);
	212
	213	return drm_vma_node_verify_access(&qbo->gem_base.vma_node, filp);
f64122c1 DA	214	}
	215
	216	static int qxl_ttm_io_mem_reserve(struct ttm_bo_device *bdev,
	217	struct ttm_mem_reg *mem)
	218	{
	219	struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
	220	struct qxl_device *qdev = qxl_get_qdev(bdev);
	221
	222	mem->bus.addr = NULL;
	223	mem->bus.offset = 0;
	224	mem->bus.size = mem->num_pages << PAGE_SHIFT;
	225	mem->bus.base = 0;
	226	mem->bus.is_iomem = false;
	227	if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE))
	228	return -EINVAL;
	229	switch (mem->mem_type) {
	230	case TTM_PL_SYSTEM:
	231	/* system memory */
	232	return 0;
	233	case TTM_PL_VRAM:
	234	mem->bus.is_iomem = true;
	235	mem->bus.base = qdev->vram_base;
	236	mem->bus.offset = mem->start << PAGE_SHIFT;
	237	break;
	238	case TTM_PL_PRIV0:
	239	mem->bus.is_iomem = true;
	240	mem->bus.base = qdev->surfaceram_base;
	241	mem->bus.offset = mem->start << PAGE_SHIFT;
	242	break;
	243	default:
	244	return -EINVAL;
	245	}
	246	return 0;
	247	}
	248
	249	static void qxl_ttm_io_mem_free(struct ttm_bo_device *bdev,
	250	struct ttm_mem_reg *mem)
	251	{
	252	}
	253
	254	/*
	255	* TTM backend functions.
	256	*/
	257	struct qxl_ttm_tt {
	258	struct ttm_dma_tt ttm;
	259	struct qxl_device *qdev;
	260	u64 offset;
	261	};
	262
	263	static int qxl_ttm_backend_bind(struct ttm_tt *ttm,
	264	struct ttm_mem_reg *bo_mem)
	265	{
	266	struct qxl_ttm_tt gtt = (void )ttm;
	267
	268	gtt->offset = (unsigned long)(bo_mem->start << PAGE_SHIFT);
	269	if (!ttm->num_pages) {
	270	WARN(1, "nothing to bind %lu pages for mreg %p back %p!\n",
	271	ttm->num_pages, bo_mem, ttm);
	272	}
	273	/* Not implemented */
	274	return -1;
	275	}
	276
	277	static int qxl_ttm_backend_unbind(struct ttm_tt *ttm)
278	{
279	/* Not implemented */
280	return -1;
281	}
282
283	static void qxl_ttm_backend_destroy(struct ttm_tt *ttm)
284	{
285	struct qxl_ttm_tt gtt = (void )ttm;
286
287	ttm_dma_tt_fini(&gtt->ttm);
288	kfree(gtt);
289	}
290
291	static struct ttm_backend_func qxl_backend_func = {
292	.bind = &qxl_ttm_backend_bind,
293	.unbind = &qxl_ttm_backend_unbind,
294	.destroy = &qxl_ttm_backend_destroy,
295	};
296
297	static int qxl_ttm_tt_populate(struct ttm_tt *ttm)
298	{
299	int r;
300
301	if (ttm->state != tt_unpopulated)
302	return 0;
303
304	r = ttm_pool_populate(ttm);
305	if (r)
306	return r;
307
308	return 0;
309	}
310
311	static void qxl_ttm_tt_unpopulate(struct ttm_tt *ttm)
312	{
313	ttm_pool_unpopulate(ttm);
314	}
315
6d01f1f5 DA	316	static struct ttm_tt qxl_ttm_tt_create(struct ttm_bo_device bdev,
	317	unsigned long size, uint32_t page_flags,
	318	struct page *dummy_read_page)
f64122c1 DA	319	{
	320	struct qxl_device *qdev;
	321	struct qxl_ttm_tt *gtt;
	322
	323	qdev = qxl_get_qdev(bdev);
	324	gtt = kzalloc(sizeof(struct qxl_ttm_tt), GFP_KERNEL);
	325	if (gtt == NULL)
	326	return NULL;
	327	gtt->ttm.ttm.func = &qxl_backend_func;
	328	gtt->qdev = qdev;
	329	if (ttm_dma_tt_init(&gtt->ttm, bdev, size, page_flags,
	330	dummy_read_page)) {
	331	kfree(gtt);
	332	return NULL;
	333	}
	334	return &gtt->ttm.ttm;
	335	}
	336
	337	static void qxl_move_null(struct ttm_buffer_object *bo,
	338	struct ttm_mem_reg *new_mem)
	339	{
	340	struct ttm_mem_reg *old_mem = &bo->mem;
	341
	342	BUG_ON(old_mem->mm_node != NULL);
	343	old_mem = new_mem;
	344	new_mem->mm_node = NULL;
	345	}
	346
	347	static int qxl_bo_move(struct ttm_buffer_object *bo,
	348	bool evict, bool interruptible,
	349	bool no_wait_gpu,
	350	struct ttm_mem_reg *new_mem)
	351	{
	352	struct ttm_mem_reg *old_mem = &bo->mem;
	353	if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) {
	354	qxl_move_null(bo, new_mem);
	355	return 0;
	356	}
	357	return ttm_bo_move_memcpy(bo, evict, no_wait_gpu, new_mem);
	358	}
	359
f64122c1 DA	360	static void qxl_bo_move_notify(struct ttm_buffer_object *bo,
	361	struct ttm_mem_reg *new_mem)
	362	{
	363	struct qxl_bo *qbo;
	364	struct qxl_device *qdev;
	365
	366	if (!qxl_ttm_bo_is_qxl_bo(bo))
	367	return;
3ebf1c6d	368	qbo = to_qxl_bo(bo);
f64122c1 DA	369	qdev = qbo->gem_base.dev->dev_private;
	370
	371	if (bo->mem.mem_type == TTM_PL_PRIV0 && qbo->surface_id)
	372	qxl_surface_evict(qdev, qbo, new_mem ? true : false);
	373	}
	374
	375	static struct ttm_bo_driver qxl_bo_driver = {
	376	.ttm_tt_create = &qxl_ttm_tt_create,
	377	.ttm_tt_populate = &qxl_ttm_tt_populate,
	378	.ttm_tt_unpopulate = &qxl_ttm_tt_unpopulate,
	379	.invalidate_caches = &qxl_invalidate_caches,
	380	.init_mem_type = &qxl_init_mem_type,
	381	.evict_flags = &qxl_evict_flags,
	382	.move = &qxl_bo_move,
	383	.verify_access = &qxl_verify_access,
	384	.io_mem_reserve = &qxl_ttm_io_mem_reserve,
	385	.io_mem_free = &qxl_ttm_io_mem_free,
f64122c1	386	.move_notify = &qxl_bo_move_notify,
98c2872a CK	387	.lru_tail = &ttm_bo_default_lru_tail,
98c2872a CK	388	.swap_lru_tail = &ttm_bo_default_swap_lru_tail,
f64122c1 DA	389	};
f64122c1 DA	390
f64122c1 DA	391	int qxl_ttm_init(struct qxl_device *qdev)
	392	{
	393	int r;
	394	int num_io_pages; /* != rom->num_io_pages, we include surface0 */
	395
	396	r = qxl_ttm_global_init(qdev);
	397	if (r)
	398	return r;
	399	/* No others user of address space so set it to 0 */
	400	r = ttm_bo_device_init(&qdev->mman.bdev,
	401	qdev->mman.bo_global_ref.ref.object,
44d847b7 DH	402	&qxl_bo_driver,
	403	qdev->ddev->anon_inode->i_mapping,
	404	DRM_FILE_PAGE_OFFSET, 0);
f64122c1 DA	405	if (r) {
	406	DRM_ERROR("failed initializing buffer object driver(%d).\n", r);
	407	return r;
	408	}
	409	/* NOTE: this includes the framebuffer (aka surface 0) */
	410	num_io_pages = qdev->rom->ram_header_offset / PAGE_SIZE;
	411	r = ttm_bo_init_mm(&qdev->mman.bdev, TTM_PL_VRAM,
	412	num_io_pages);
	413	if (r) {
	414	DRM_ERROR("Failed initializing VRAM heap.\n");
	415	return r;
	416	}
	417	r = ttm_bo_init_mm(&qdev->mman.bdev, TTM_PL_PRIV0,
	418	qdev->surfaceram_size / PAGE_SIZE);
	419	if (r) {
	420	DRM_ERROR("Failed initializing Surfaces heap.\n");
	421	return r;
	422	}
	423	DRM_INFO("qxl: %uM of VRAM memory size\n",
	424	(unsigned)qdev->vram_size / (1024 * 1024));
	425	DRM_INFO("qxl: %luM of IO pages memory ready (VRAM domain)\n",
	426	((unsigned)num_io_pages * PAGE_SIZE) / (1024 * 1024));
d9bbf189 GH	427	DRM_INFO("qxl: %uM of Surface memory size\n",
d9bbf189 GH	428	(unsigned)qdev->surfaceram_size / (1024 * 1024));
f64122c1 DA	429	r = qxl_ttm_debugfs_init(qdev);
	430	if (r) {
	431	DRM_ERROR("Failed to init debugfs\n");
	432	return r;
	433	}
	434	return 0;
	435	}
	436
	437	void qxl_ttm_fini(struct qxl_device *qdev)
	438	{
	439	ttm_bo_clean_mm(&qdev->mman.bdev, TTM_PL_VRAM);
	440	ttm_bo_clean_mm(&qdev->mman.bdev, TTM_PL_PRIV0);
	441	ttm_bo_device_release(&qdev->mman.bdev);
	442	qxl_ttm_global_fini(qdev);
	443	DRM_INFO("qxl: ttm finalized\n");
	444	}
	445
	446
	447	#define QXL_DEBUGFS_MEM_TYPES 2
	448
	449	#if defined(CONFIG_DEBUG_FS)
	450	static int qxl_mm_dump_table(struct seq_file m, void data)
	451	{
	452	struct drm_info_node node = (struct drm_info_node )m->private;
	453	struct drm_mm mm = (struct drm_mm )node->info_ent->data;
	454	struct drm_device *dev = node->minor->dev;
	455	struct qxl_device *rdev = dev->dev_private;
	456	int ret;
	457	struct ttm_bo_global *glob = rdev->mman.bdev.glob;
	458
	459	spin_lock(&glob->lru_lock);
	460	ret = drm_mm_dump_table(m, mm);
	461	spin_unlock(&glob->lru_lock);
	462	return ret;
	463	}
	464	#endif
	465
	466	static int qxl_ttm_debugfs_init(struct qxl_device *qdev)
	467	{
e1adc78c	468	#if defined(CONFIG_DEBUG_FS)
f64122c1 DA	469	static struct drm_info_list qxl_mem_types_list[QXL_DEBUGFS_MEM_TYPES];
	470	static char qxl_mem_types_names[QXL_DEBUGFS_MEM_TYPES][32];
	471	unsigned i;
	472
	473	for (i = 0; i < QXL_DEBUGFS_MEM_TYPES; i++) {
	474	if (i == 0)
	475	sprintf(qxl_mem_types_names[i], "qxl_mem_mm");
	476	else
	477	sprintf(qxl_mem_types_names[i], "qxl_surf_mm");
	478	qxl_mem_types_list[i].name = qxl_mem_types_names[i];
	479	qxl_mem_types_list[i].show = &qxl_mm_dump_table;
	480	qxl_mem_types_list[i].driver_features = 0;
	481	if (i == 0)
	482	qxl_mem_types_list[i].data = qdev->mman.bdev.man[TTM_PL_VRAM].priv;
	483	else
	484	qxl_mem_types_list[i].data = qdev->mman.bdev.man[TTM_PL_PRIV0].priv;
	485
	486	}
	487	return qxl_debugfs_add_files(qdev, qxl_mem_types_list, i);
e1adc78c DA	488	#else
	489	return 0;
	490	#endif
f64122c1	491	}