[mirror_ubuntu-zesty-kernel.git] / drivers / gpu / drm / vmwgfx / vmwgfx_buffer.c

/**************************************************************************
 *
 * Copyright © 2009 VMware, Inc., Palo Alto, CA., USA
 * 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 above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND 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.
 *
 **************************************************************************/

#include "vmwgfx_drv.h"
#include "ttm/ttm_bo_driver.h"
#include "ttm/ttm_placement.h"

static uint32_t vram_placement_flags = TTM_PL_FLAG_VRAM |
	TTM_PL_FLAG_CACHED;

static uint32_t vram_ne_placement_flags = TTM_PL_FLAG_VRAM |
	TTM_PL_FLAG_CACHED |
	TTM_PL_FLAG_NO_EVICT;

static uint32_t sys_placement_flags = TTM_PL_FLAG_SYSTEM |
	TTM_PL_FLAG_CACHED;

struct ttm_placement vmw_vram_placement = {
	.fpfn = 0,
	.lpfn = 0,
	.num_placement = 1,
	.placement = &vram_placement_flags,
	.num_busy_placement = 1,
	.busy_placement = &vram_placement_flags
};

struct ttm_placement vmw_vram_ne_placement = {
	.fpfn = 0,
	.lpfn = 0,
	.num_placement = 1,
	.placement = &vram_ne_placement_flags,
	.num_busy_placement = 1,
	.busy_placement = &vram_ne_placement_flags
};

struct ttm_placement vmw_sys_placement = {
	.fpfn = 0,
	.lpfn = 0,
	.num_placement = 1,
	.placement = &sys_placement_flags,
	.num_busy_placement = 1,
	.busy_placement = &sys_placement_flags
};

struct vmw_ttm_backend {
	struct ttm_backend backend;
};

static int vmw_ttm_populate(struct ttm_backend *backend,
			    unsigned long num_pages, struct page **pages,
			    struct page *dummy_read_page)
{
	return 0;
}

static int vmw_ttm_bind(struct ttm_backend *backend, struct ttm_mem_reg *bo_mem)
{
	return 0;
}

static int vmw_ttm_unbind(struct ttm_backend *backend)
{
	return 0;
}

static void vmw_ttm_clear(struct ttm_backend *backend)
{
}

static void vmw_ttm_destroy(struct ttm_backend *backend)
{
	struct vmw_ttm_backend *vmw_be =
	    container_of(backend, struct vmw_ttm_backend, backend);

	kfree(vmw_be);
}

static struct ttm_backend_func vmw_ttm_func = {
	.populate = vmw_ttm_populate,
	.clear = vmw_ttm_clear,
	.bind = vmw_ttm_bind,
	.unbind = vmw_ttm_unbind,
	.destroy = vmw_ttm_destroy,
};

struct ttm_backend *vmw_ttm_backend_init(struct ttm_bo_device *bdev)
{
	struct vmw_ttm_backend *vmw_be;

	vmw_be = kmalloc(sizeof(*vmw_be), GFP_KERNEL);
	if (!vmw_be)
		return NULL;

	vmw_be->backend.func = &vmw_ttm_func;

	return &vmw_be->backend;
}

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

int vmw_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
		      struct ttm_mem_type_manager *man)
{
	struct vmw_private *dev_priv =
	    container_of(bdev, struct vmw_private, bdev);

	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:
		/* "On-card" video ram */
		man->gpu_offset = 0;
		man->io_offset = dev_priv->vram_start;
		man->io_size = dev_priv->vram_size;
		man->flags = TTM_MEMTYPE_FLAG_FIXED |
		    TTM_MEMTYPE_FLAG_NEEDS_IOREMAP | TTM_MEMTYPE_FLAG_MAPPABLE;
		man->io_addr = NULL;
		man->available_caching = TTM_PL_MASK_CACHING;
		man->default_caching = TTM_PL_FLAG_WC;
		break;
	default:
		DRM_ERROR("Unsupported memory type %u\n", (unsigned)type);
		return -EINVAL;
	}
	return 0;
}

void vmw_evict_flags(struct ttm_buffer_object *bo,
		     struct ttm_placement *placement)
{
	*placement = vmw_sys_placement;
}

/**
 * FIXME: Proper access checks on buffers.
 */

static int vmw_verify_access(struct ttm_buffer_object *bo, struct file *filp)
{
	return 0;
}

static void vmw_move_notify(struct ttm_buffer_object *bo,
		     struct ttm_mem_reg *new_mem)
{
	if (new_mem->mem_type != TTM_PL_SYSTEM)
		vmw_dmabuf_gmr_unbind(bo);
}

static void vmw_swap_notify(struct ttm_buffer_object *bo)
{
	vmw_dmabuf_gmr_unbind(bo);
}

/**
 * FIXME: We're using the old vmware polling method to sync.
 * Do this with fences instead.
 */

static void *vmw_sync_obj_ref(void *sync_obj)
{
	return sync_obj;
}

static void vmw_sync_obj_unref(void **sync_obj)
{
	*sync_obj = NULL;
}

static int vmw_sync_obj_flush(void *sync_obj, void *sync_arg)
{
	struct vmw_private *dev_priv = (struct vmw_private *)sync_arg;

	mutex_lock(&dev_priv->hw_mutex);
	vmw_write(dev_priv, SVGA_REG_SYNC, SVGA_SYNC_GENERIC);
	mutex_unlock(&dev_priv->hw_mutex);
	return 0;
}

static bool vmw_sync_obj_signaled(void *sync_obj, void *sync_arg)
{
	struct vmw_private *dev_priv = (struct vmw_private *)sync_arg;
	uint32_t sequence = (unsigned long) sync_obj;

	return vmw_fence_signaled(dev_priv, sequence);
}

static int vmw_sync_obj_wait(void *sync_obj, void *sync_arg,
			     bool lazy, bool interruptible)
{
	struct vmw_private *dev_priv = (struct vmw_private *)sync_arg;
	uint32_t sequence = (unsigned long) sync_obj;

	return vmw_wait_fence(dev_priv, false, sequence, false, 3*HZ);
}

struct ttm_bo_driver vmw_bo_driver = {
	.create_ttm_backend_entry = vmw_ttm_backend_init,
	.invalidate_caches = vmw_invalidate_caches,
	.init_mem_type = vmw_init_mem_type,
	.evict_flags = vmw_evict_flags,
	.move = NULL,
	.verify_access = vmw_verify_access,
	.sync_obj_signaled = vmw_sync_obj_signaled,
	.sync_obj_wait = vmw_sync_obj_wait,
	.sync_obj_flush = vmw_sync_obj_flush,
	.sync_obj_unref = vmw_sync_obj_unref,
	.sync_obj_ref = vmw_sync_obj_ref,
	.move_notify = vmw_move_notify,
	.swap_notify = vmw_swap_notify
};
Commit	Line	Data
fb1d9738 JB	1	/**************************************************************************
	2	*
	3	* Copyright © 2009 VMware, Inc., Palo Alto, CA., USA
	4	* All Rights Reserved.
	5	*
	6	* Permission is hereby granted, free of charge, to any person obtaining a
	7	* copy of this software and associated documentation files (the
	8	* "Software"), to deal in the Software without restriction, including
	9	* without limitation the rights to use, copy, modify, merge, publish,
	10	* distribute, sub license, and/or sell copies of the Software, and to
	11	* permit persons to whom the Software is furnished to do so, subject to
	12	* the following conditions:
	13	*
	14	* The above copyright notice and this permission notice (including the
	15	* next paragraph) shall be included in all copies or substantial portions
	16	* of the Software.
	17	*
	18	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	19	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	20	* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
	21	* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
	22	* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
	23	* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
	24	* USE OR OTHER DEALINGS IN THE SOFTWARE.
	25	*
	26	**************************************************************************/
	27
	28	#include "vmwgfx_drv.h"
	29	#include "ttm/ttm_bo_driver.h"
	30	#include "ttm/ttm_placement.h"
	31
	32	static uint32_t vram_placement_flags = TTM_PL_FLAG_VRAM \|
	33	TTM_PL_FLAG_CACHED;
	34
	35	static uint32_t vram_ne_placement_flags = TTM_PL_FLAG_VRAM \|
	36	TTM_PL_FLAG_CACHED \|
	37	TTM_PL_FLAG_NO_EVICT;
	38
	39	static uint32_t sys_placement_flags = TTM_PL_FLAG_SYSTEM \|
	40	TTM_PL_FLAG_CACHED;
	41
	42	struct ttm_placement vmw_vram_placement = {
	43	.fpfn = 0,
	44	.lpfn = 0,
	45	.num_placement = 1,
	46	.placement = &vram_placement_flags,
	47	.num_busy_placement = 1,
	48	.busy_placement = &vram_placement_flags
	49	};
	50
	51	struct ttm_placement vmw_vram_ne_placement = {
	52	.fpfn = 0,
	53	.lpfn = 0,
	54	.num_placement = 1,
	55	.placement = &vram_ne_placement_flags,
	56	.num_busy_placement = 1,
	57	.busy_placement = &vram_ne_placement_flags
	58	};
	59
	60	struct ttm_placement vmw_sys_placement = {
	61	.fpfn = 0,
	62	.lpfn = 0,
	63	.num_placement = 1,
	64	.placement = &sys_placement_flags,
65	.num_busy_placement = 1,
66	.busy_placement = &sys_placement_flags
67	};
68
69	struct vmw_ttm_backend {
70	struct ttm_backend backend;
71	};
72
73	static int vmw_ttm_populate(struct ttm_backend *backend,
74	unsigned long num_pages, struct page **pages,
75	struct page *dummy_read_page)
76	{
77	return 0;
78	}
79
80	static int vmw_ttm_bind(struct ttm_backend backend, struct ttm_mem_reg bo_mem)
81	{
82	return 0;
83	}
84
85	static int vmw_ttm_unbind(struct ttm_backend *backend)
86	{
87	return 0;
88	}
89
90	static void vmw_ttm_clear(struct ttm_backend *backend)
91	{
92	}
93
94	static void vmw_ttm_destroy(struct ttm_backend *backend)
95	{
96	struct vmw_ttm_backend *vmw_be =
97	container_of(backend, struct vmw_ttm_backend, backend);
98
99	kfree(vmw_be);
100	}
101
102	static struct ttm_backend_func vmw_ttm_func = {
103	.populate = vmw_ttm_populate,
104	.clear = vmw_ttm_clear,
105	.bind = vmw_ttm_bind,
106	.unbind = vmw_ttm_unbind,
107	.destroy = vmw_ttm_destroy,
108	};
109
110	struct ttm_backend vmw_ttm_backend_init(struct ttm_bo_device bdev)
111	{
112	struct vmw_ttm_backend *vmw_be;
113
114	vmw_be = kmalloc(sizeof(*vmw_be), GFP_KERNEL);
115	if (!vmw_be)
116	return NULL;
117
118	vmw_be->backend.func = &vmw_ttm_func;
119
120	return &vmw_be->backend;
121	}
122
123	int vmw_invalidate_caches(struct ttm_bo_device *bdev, uint32_t flags)
124	{
125	return 0;
126	}
127
128	int vmw_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
129	struct ttm_mem_type_manager *man)
130	{
131	struct vmw_private *dev_priv =
132	container_of(bdev, struct vmw_private, bdev);
133
134	switch (type) {
135	case TTM_PL_SYSTEM:
136	/* System memory */
137
138	man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
139	man->available_caching = TTM_PL_MASK_CACHING;
140	man->default_caching = TTM_PL_FLAG_CACHED;
141	break;
142	case TTM_PL_VRAM:
143	/* "On-card" video ram */
144	man->gpu_offset = 0;
145	man->io_offset = dev_priv->vram_start;
146	man->io_size = dev_priv->vram_size;
147	man->flags = TTM_MEMTYPE_FLAG_FIXED \|
148	TTM_MEMTYPE_FLAG_NEEDS_IOREMAP \| TTM_MEMTYPE_FLAG_MAPPABLE;
149	man->io_addr = NULL;
150	man->available_caching = TTM_PL_MASK_CACHING;
151	man->default_caching = TTM_PL_FLAG_WC;
152	break;
153	default:
154	DRM_ERROR("Unsupported memory type %u\n", (unsigned)type);
155	return -EINVAL;
156	}
157	return 0;
158	}
159
160	void vmw_evict_flags(struct ttm_buffer_object *bo,
161	struct ttm_placement *placement)
162	{
163	*placement = vmw_sys_placement;
164	}
165
166	/**
167	* FIXME: Proper access checks on buffers.
168	*/
169
170	static int vmw_verify_access(struct ttm_buffer_object bo, struct file filp)
171	{
172	return 0;
173	}
174
effe1105 TH	175	static void vmw_move_notify(struct ttm_buffer_object *bo,
	176	struct ttm_mem_reg *new_mem)
	177	{
	178	if (new_mem->mem_type != TTM_PL_SYSTEM)
	179	vmw_dmabuf_gmr_unbind(bo);
	180	}
	181
476d51db TH	182	static void vmw_swap_notify(struct ttm_buffer_object *bo)
	183	{
	184	vmw_dmabuf_gmr_unbind(bo);
	185	}
	186
fb1d9738 JB	187	/**
	188	* FIXME: We're using the old vmware polling method to sync.
	189	* Do this with fences instead.
	190	*/
	191
	192	static void vmw_sync_obj_ref(void sync_obj)
	193	{
	194	return sync_obj;
	195	}
	196
	197	static void vmw_sync_obj_unref(void **sync_obj)
	198	{
	199	*sync_obj = NULL;
	200	}
	201
	202	static int vmw_sync_obj_flush(void sync_obj, void sync_arg)
	203	{
	204	struct vmw_private dev_priv = (struct vmw_private )sync_arg;
	205
	206	mutex_lock(&dev_priv->hw_mutex);
	207	vmw_write(dev_priv, SVGA_REG_SYNC, SVGA_SYNC_GENERIC);
	208	mutex_unlock(&dev_priv->hw_mutex);
	209	return 0;
	210	}
	211
	212	static bool vmw_sync_obj_signaled(void sync_obj, void sync_arg)
	213	{
	214	struct vmw_private dev_priv = (struct vmw_private )sync_arg;
	215	uint32_t sequence = (unsigned long) sync_obj;
	216
	217	return vmw_fence_signaled(dev_priv, sequence);
	218	}
	219
	220	static int vmw_sync_obj_wait(void sync_obj, void sync_arg,
	221	bool lazy, bool interruptible)
	222	{
	223	struct vmw_private dev_priv = (struct vmw_private )sync_arg;
	224	uint32_t sequence = (unsigned long) sync_obj;
	225
	226	return vmw_wait_fence(dev_priv, false, sequence, false, 3*HZ);
	227	}
	228
	229	struct ttm_bo_driver vmw_bo_driver = {
	230	.create_ttm_backend_entry = vmw_ttm_backend_init,
	231	.invalidate_caches = vmw_invalidate_caches,
	232	.init_mem_type = vmw_init_mem_type,
	233	.evict_flags = vmw_evict_flags,
	234	.move = NULL,
	235	.verify_access = vmw_verify_access,
	236	.sync_obj_signaled = vmw_sync_obj_signaled,
	237	.sync_obj_wait = vmw_sync_obj_wait,
	238	.sync_obj_flush = vmw_sync_obj_flush,
	239	.sync_obj_unref = vmw_sync_obj_unref,
effe1105	240	.sync_obj_ref = vmw_sync_obj_ref,
476d51db TH	241	.move_notify = vmw_move_notify,
476d51db TH	242	.swap_notify = vmw_swap_notify
fb1d9738	243	};