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/**************************************************************************
*
* 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;
}
/**
* 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
};
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