[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 <linux/delay.h>

#include <drm/drm.h>
#include <drm/drm_file.h>
#include <drm/drm_debugfs.h>
#include <drm/qxl_drm.h>
#include <drm/ttm/ttm_bo.h>
#include <drm/ttm/ttm_placement.h>
#include <drm/ttm/ttm_range_manager.h>
#include <drm/ttm/ttm_tt.h>

#include "qxl_drv.h"
#include "qxl_object.h"

static struct qxl_device *qxl_get_qdev(struct ttm_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 void qxl_evict_flags(struct ttm_buffer_object *bo,
				struct ttm_placement *placement)
{
	struct qxl_bo *qbo;
	static const struct ttm_place placements = {
		.fpfn = 0,
		.lpfn = 0,
		.mem_type = TTM_PL_SYSTEM,
		.flags = 0
	};

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

int qxl_ttm_io_mem_reserve(struct ttm_device *bdev,
			   struct ttm_resource *mem)
{
	struct qxl_device *qdev = qxl_get_qdev(bdev);

	switch (mem->mem_type) {
	case TTM_PL_SYSTEM:
		/* system memory */
		return 0;
	case TTM_PL_VRAM:
		mem->bus.is_iomem = true;
		mem->bus.offset = (mem->start << PAGE_SHIFT) + qdev->vram_base;
		mem->bus.caching = ttm_write_combined;
		break;
	case TTM_PL_PRIV:
		mem->bus.is_iomem = true;
		mem->bus.offset = (mem->start << PAGE_SHIFT) +
			qdev->surfaceram_base;
		mem->bus.caching = ttm_write_combined;
		break;
	default:
		return -EINVAL;
	}
	return 0;
}

/*
 * TTM backend functions.
 */
static void qxl_ttm_backend_destroy(struct ttm_device *bdev, struct ttm_tt *ttm)
{
	ttm_tt_fini(ttm);
	kfree(ttm);
}

static struct ttm_tt *qxl_ttm_tt_create(struct ttm_buffer_object *bo,
					uint32_t page_flags)
{
	struct ttm_tt *ttm;

	ttm = kzalloc(sizeof(struct ttm_tt), GFP_KERNEL);
	if (ttm == NULL)
		return NULL;
	if (ttm_tt_init(ttm, bo, page_flags, ttm_cached, 0)) {
		kfree(ttm);
		return NULL;
	}
	return ttm;
}

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

	if (!qxl_ttm_bo_is_qxl_bo(bo) || !bo->resource)
		return;
	qbo = to_qxl_bo(bo);
	qdev = to_qxl(qbo->tbo.base.dev);

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

static int qxl_bo_move(struct ttm_buffer_object *bo, bool evict,
		       struct ttm_operation_ctx *ctx,
		       struct ttm_resource *new_mem,
		       struct ttm_place *hop)
{
	struct ttm_resource *old_mem = bo->resource;
	int ret;

	if (!old_mem) {
		if (new_mem->mem_type != TTM_PL_SYSTEM) {
			hop->mem_type = TTM_PL_SYSTEM;
			hop->flags = TTM_PL_FLAG_TEMPORARY;
			return -EMULTIHOP;
		}

		ttm_bo_move_null(bo, new_mem);
		return 0;
	}

	qxl_bo_move_notify(bo, new_mem);

	ret = ttm_bo_wait_ctx(bo, ctx);
	if (ret)
		return ret;

	if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) {
		ttm_bo_move_null(bo, new_mem);
		return 0;
	}
	return ttm_bo_move_memcpy(bo, ctx, new_mem);
}

static void qxl_bo_delete_mem_notify(struct ttm_buffer_object *bo)
{
	qxl_bo_move_notify(bo, NULL);
}

static struct ttm_device_funcs qxl_bo_driver = {
	.ttm_tt_create = &qxl_ttm_tt_create,
	.ttm_tt_destroy = &qxl_ttm_backend_destroy,
	.eviction_valuable = ttm_bo_eviction_valuable,
	.evict_flags = &qxl_evict_flags,
	.move = &qxl_bo_move,
	.io_mem_reserve = &qxl_ttm_io_mem_reserve,
	.delete_mem_notify = &qxl_bo_delete_mem_notify,
};

static int qxl_ttm_init_mem_type(struct qxl_device *qdev,
				 unsigned int type,
				 uint64_t size)
{
	return ttm_range_man_init(&qdev->mman.bdev, type, false, size);
}

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

	/* No others user of address space so set it to 0 */
	r = ttm_device_init(&qdev->mman.bdev, &qxl_bo_driver, NULL,
			    qdev->ddev.anon_inode->i_mapping,
			    qdev->ddev.vma_offset_manager,
			    false, false);
	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 = qxl_ttm_init_mem_type(qdev, TTM_PL_VRAM, num_io_pages);
	if (r) {
		DRM_ERROR("Failed initializing VRAM heap.\n");
		return r;
	}
	r = qxl_ttm_init_mem_type(qdev, TTM_PL_PRIV,
				  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 int)qdev->vram_size / (1024 * 1024));
	DRM_INFO("qxl: %luM of IO pages memory ready (VRAM domain)\n",
		 ((unsigned int)num_io_pages * PAGE_SIZE) / (1024 * 1024));
	DRM_INFO("qxl: %uM of Surface memory size\n",
		 (unsigned int)qdev->surfaceram_size / (1024 * 1024));
	return 0;
}

void qxl_ttm_fini(struct qxl_device *qdev)
{
	ttm_range_man_fini(&qdev->mman.bdev, TTM_PL_VRAM);
	ttm_range_man_fini(&qdev->mman.bdev, TTM_PL_PRIV);
	ttm_device_fini(&qdev->mman.bdev);
	DRM_INFO("qxl: ttm finalized\n");
}

void qxl_ttm_debugfs_init(struct qxl_device *qdev)
{
#if defined(CONFIG_DEBUG_FS)
	ttm_resource_manager_create_debugfs(ttm_manager_type(&qdev->mman.bdev,
							     TTM_PL_VRAM),
					    qdev->ddev.primary->debugfs_root, "qxl_mem_mm");
	ttm_resource_manager_create_debugfs(ttm_manager_type(&qdev->mman.bdev,
							     TTM_PL_PRIV),
					    qdev->ddev.primary->debugfs_root, "qxl_surf_mm");
#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
c0f4b75c SR	26	#include <linux/delay.h>
	27
	28	#include <drm/drm.h>
	29	#include <drm/drm_file.h>
	30	#include <drm/drm_debugfs.h>
	31	#include <drm/qxl_drm.h>
a3185f91	32	#include <drm/ttm/ttm_bo.h>
c0f4b75c	33	#include <drm/ttm/ttm_placement.h>
3eb7d96e	34	#include <drm/ttm/ttm_range_manager.h>
a3185f91	35	#include <drm/ttm/ttm_tt.h>
c0f4b75c	36
f64122c1 DA	37	#include "qxl_drv.h"
	38	#include "qxl_object.h"
	39
8af8a109	40	static struct qxl_device qxl_get_qdev(struct ttm_device bdev)
f64122c1 DA	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
f64122c1 DA	50	static void qxl_evict_flags(struct ttm_buffer_object *bo,
	51	struct ttm_placement *placement)
	52	{
	53	struct qxl_bo *qbo;
9e2033a6	54	static const struct ttm_place placements = {
f1217ed0 CK	55	.fpfn = 0,
f1217ed0 CK	56	.lpfn = 0,
48e07c23	57	.mem_type = TTM_PL_SYSTEM,
ce65b874	58	.flags = 0
f1217ed0	59	};
f64122c1 DA	60
f64122c1 DA	61	if (!qxl_ttm_bo_is_qxl_bo(bo)) {
f64122c1	62	placement->placement = &placements;
f64122c1	63	placement->num_placement = 1;
f64122c1 DA	64	return;
f64122c1 DA	65	}
3ebf1c6d	66	qbo = to_qxl_bo(bo);
9d36d432	67	qxl_ttm_placement_from_domain(qbo, QXL_GEM_DOMAIN_CPU);
f64122c1 DA	68	*placement = qbo->placement;
	69	}
	70
8af8a109	71	int qxl_ttm_io_mem_reserve(struct ttm_device *bdev,
2966141a	72	struct ttm_resource *mem)
f64122c1	73	{
f64122c1 DA	74	struct qxl_device *qdev = qxl_get_qdev(bdev);
f64122c1 DA	75
f64122c1 DA	76	switch (mem->mem_type) {
	77	case TTM_PL_SYSTEM:
	78	/* system memory */
	79	return 0;
	80	case TTM_PL_VRAM:
	81	mem->bus.is_iomem = true;
54d04ea8	82	mem->bus.offset = (mem->start << PAGE_SHIFT) + qdev->vram_base;
59ab4ee0	83	mem->bus.caching = ttm_write_combined;
f64122c1	84	break;
283cde69	85	case TTM_PL_PRIV:
f64122c1	86	mem->bus.is_iomem = true;
54d04ea8 CK	87	mem->bus.offset = (mem->start << PAGE_SHIFT) +
54d04ea8 CK	88	qdev->surfaceram_base;
59ab4ee0	89	mem->bus.caching = ttm_write_combined;
f64122c1 DA	90	break;
	91	default:
	92	return -EINVAL;
	93	}
	94	return 0;
	95	}
	96
f64122c1 DA	97	/*
	98	* TTM backend functions.
	99	*/
8af8a109	100	static void qxl_ttm_backend_destroy(struct ttm_device bdev, struct ttm_tt ttm)
f64122c1	101	{
881c4117 DA	102	ttm_tt_fini(ttm);
881c4117 DA	103	kfree(ttm);
f64122c1 DA	104	}
f64122c1 DA	105
dde5da23 CK	106	static struct ttm_tt qxl_ttm_tt_create(struct ttm_buffer_object bo,
dde5da23 CK	107	uint32_t page_flags)
f64122c1	108	{
881c4117	109	struct ttm_tt *ttm;
f64122c1	110
881c4117 DA	111	ttm = kzalloc(sizeof(struct ttm_tt), GFP_KERNEL);
881c4117 DA	112	if (ttm == NULL)
f64122c1	113	return NULL;
e36764ec	114	if (ttm_tt_init(ttm, bo, page_flags, ttm_cached, 0)) {
881c4117	115	kfree(ttm);
f64122c1 DA	116	return NULL;
f64122c1 DA	117	}
881c4117	118	return ttm;
f64122c1 DA	119	}
f64122c1 DA	120
f64122c1	121	static void qxl_bo_move_notify(struct ttm_buffer_object *bo,
2966141a	122	struct ttm_resource *new_mem)
f64122c1 DA	123	{
	124	struct qxl_bo *qbo;
	125	struct qxl_device *qdev;
	126
3efe180d	127	if (!qxl_ttm_bo_is_qxl_bo(bo) \|\| !bo->resource)
f64122c1	128	return;
3ebf1c6d	129	qbo = to_qxl_bo(bo);
e304f8a0	130	qdev = to_qxl(qbo->tbo.base.dev);
f64122c1	131
d3116756	132	if (bo->resource->mem_type == TTM_PL_PRIV && qbo->surface_id)
f64122c1 DA	133	qxl_surface_evict(qdev, qbo, new_mem ? true : false);
	134	}
	135
6d820003 DA	136	static int qxl_bo_move(struct ttm_buffer_object *bo, bool evict,
6d820003 DA	137	struct ttm_operation_ctx *ctx,
ebdf5651 DA	138	struct ttm_resource *new_mem,
ebdf5651 DA	139	struct ttm_place *hop)
6d820003	140	{
d3116756	141	struct ttm_resource *old_mem = bo->resource;
6d820003 DA	142	int ret;
6d820003 DA	143
b129ff30 MA	144	if (!old_mem) {
	145	if (new_mem->mem_type != TTM_PL_SYSTEM) {
	146	hop->mem_type = TTM_PL_SYSTEM;
	147	hop->flags = TTM_PL_FLAG_TEMPORARY;
	148	return -EMULTIHOP;
	149	}
	150
	151	ttm_bo_move_null(bo, new_mem);
	152	return 0;
	153	}
	154
f1c68b6a	155	qxl_bo_move_notify(bo, new_mem);
6d820003 DA	156
	157	ret = ttm_bo_wait_ctx(bo, ctx);
	158	if (ret)
f1c68b6a	159	return ret;
6d820003 DA	160
	161	if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) {
	162	ttm_bo_move_null(bo, new_mem);
	163	return 0;
	164	}
f1c68b6a	165	return ttm_bo_move_memcpy(bo, ctx, new_mem);
6d820003 DA	166	}
6d820003 DA	167
6a6e5988 DA	168	static void qxl_bo_delete_mem_notify(struct ttm_buffer_object *bo)
6a6e5988 DA	169	{
f1c68b6a	170	qxl_bo_move_notify(bo, NULL);
6a6e5988 DA	171	}
6a6e5988 DA	172
8af8a109	173	static struct ttm_device_funcs qxl_bo_driver = {
f64122c1	174	.ttm_tt_create = &qxl_ttm_tt_create,
dc2caa30	175	.ttm_tt_destroy = &qxl_ttm_backend_destroy,
a2ab19fe	176	.eviction_valuable = ttm_bo_eviction_valuable,
f64122c1 DA	177	.evict_flags = &qxl_evict_flags,
f64122c1 DA	178	.move = &qxl_bo_move,
f64122c1	179	.io_mem_reserve = &qxl_ttm_io_mem_reserve,
6a6e5988	180	.delete_mem_notify = &qxl_bo_delete_mem_notify,
f64122c1 DA	181	};
f64122c1 DA	182
ccd0dc43 CK	183	static int qxl_ttm_init_mem_type(struct qxl_device *qdev,
	184	unsigned int type,
	185	uint64_t size)
	186	{
9c3006a4	187	return ttm_range_man_init(&qdev->mman.bdev, type, false, size);
ccd0dc43 CK	188	}
ccd0dc43 CK	189
f64122c1 DA	190	int qxl_ttm_init(struct qxl_device *qdev)
	191	{
	192	int r;
	193	int num_io_pages; /* != rom->num_io_pages, we include surface0 */
	194
f64122c1	195	/* No others user of address space so set it to 0 */
8af8a109 CK	196	r = ttm_device_init(&qdev->mman.bdev, &qxl_bo_driver, NULL,
	197	qdev->ddev.anon_inode->i_mapping,
	198	qdev->ddev.vma_offset_manager,
	199	false, false);
f64122c1 DA	200	if (r) {
	201	DRM_ERROR("failed initializing buffer object driver(%d).\n", r);
	202	return r;
	203	}
	204	/* NOTE: this includes the framebuffer (aka surface 0) */
	205	num_io_pages = qdev->rom->ram_header_offset / PAGE_SIZE;
ccd0dc43	206	r = qxl_ttm_init_mem_type(qdev, TTM_PL_VRAM, num_io_pages);
f64122c1 DA	207	if (r) {
	208	DRM_ERROR("Failed initializing VRAM heap.\n");
	209	return r;
	210	}
ccd0dc43 CK	211	r = qxl_ttm_init_mem_type(qdev, TTM_PL_PRIV,
ccd0dc43 CK	212	qdev->surfaceram_size / PAGE_SIZE);
f64122c1 DA	213	if (r) {
	214	DRM_ERROR("Failed initializing Surfaces heap.\n");
	215	return r;
	216	}
	217	DRM_INFO("qxl: %uM of VRAM memory size\n",
1b000494	218	(unsigned int)qdev->vram_size / (1024 * 1024));
f64122c1	219	DRM_INFO("qxl: %luM of IO pages memory ready (VRAM domain)\n",
1b000494	220	((unsigned int)num_io_pages * PAGE_SIZE) / (1024 * 1024));
d9bbf189	221	DRM_INFO("qxl: %uM of Surface memory size\n",
1b000494	222	(unsigned int)qdev->surfaceram_size / (1024 * 1024));
f64122c1 DA	223	return 0;
	224	}
	225
	226	void qxl_ttm_fini(struct qxl_device *qdev)
	227	{
37205891 DA	228	ttm_range_man_fini(&qdev->mman.bdev, TTM_PL_VRAM);
37205891 DA	229	ttm_range_man_fini(&qdev->mman.bdev, TTM_PL_PRIV);
8af8a109	230	ttm_device_fini(&qdev->mman.bdev);
f64122c1 DA	231	DRM_INFO("qxl: ttm finalized\n");
	232	}
	233
7ce84471	234	void qxl_ttm_debugfs_init(struct qxl_device *qdev)
f64122c1	235	{
e1adc78c	236	#if defined(CONFIG_DEBUG_FS)
d0719e09 ZR	237	ttm_resource_manager_create_debugfs(ttm_manager_type(&qdev->mman.bdev,
	238	TTM_PL_VRAM),
	239	qdev->ddev.primary->debugfs_root, "qxl_mem_mm");
	240	ttm_resource_manager_create_debugfs(ttm_manager_type(&qdev->mman.bdev,
	241	TTM_PL_PRIV),
	242	qdev->ddev.primary->debugfs_root, "qxl_surf_mm");
e1adc78c	243	#endif
f64122c1	244	}