![Thomas Hellstrom](/assets/img/avatar_default.png)
Make sure that other DRM clients can't map the contents of non-shareable buffer objects. Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Reviewed-by: Brian Paul <brianp@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
353 lines
9.3 KiB
C
353 lines
9.3 KiB
C
/**************************************************************************
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*
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* Copyright © 2009 VMware, Inc., Palo Alto, CA., USA
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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* USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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#include "vmwgfx_drv.h"
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#include <drm/ttm/ttm_bo_driver.h>
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#include <drm/ttm/ttm_placement.h>
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#include <drm/ttm/ttm_page_alloc.h>
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static uint32_t vram_placement_flags = TTM_PL_FLAG_VRAM |
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TTM_PL_FLAG_CACHED;
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static uint32_t vram_ne_placement_flags = TTM_PL_FLAG_VRAM |
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TTM_PL_FLAG_CACHED |
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TTM_PL_FLAG_NO_EVICT;
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static uint32_t sys_placement_flags = TTM_PL_FLAG_SYSTEM |
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TTM_PL_FLAG_CACHED;
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static uint32_t gmr_placement_flags = VMW_PL_FLAG_GMR |
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TTM_PL_FLAG_CACHED;
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static uint32_t gmr_ne_placement_flags = VMW_PL_FLAG_GMR |
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TTM_PL_FLAG_CACHED |
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TTM_PL_FLAG_NO_EVICT;
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struct ttm_placement vmw_vram_placement = {
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.fpfn = 0,
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.lpfn = 0,
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.num_placement = 1,
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.placement = &vram_placement_flags,
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.num_busy_placement = 1,
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.busy_placement = &vram_placement_flags
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};
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static uint32_t vram_gmr_placement_flags[] = {
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TTM_PL_FLAG_VRAM | TTM_PL_FLAG_CACHED,
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VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED
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};
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static uint32_t gmr_vram_placement_flags[] = {
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VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED,
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TTM_PL_FLAG_VRAM | TTM_PL_FLAG_CACHED
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};
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struct ttm_placement vmw_vram_gmr_placement = {
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.fpfn = 0,
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.lpfn = 0,
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.num_placement = 2,
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.placement = vram_gmr_placement_flags,
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.num_busy_placement = 1,
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.busy_placement = &gmr_placement_flags
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};
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static uint32_t vram_gmr_ne_placement_flags[] = {
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TTM_PL_FLAG_VRAM | TTM_PL_FLAG_CACHED | TTM_PL_FLAG_NO_EVICT,
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VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED | TTM_PL_FLAG_NO_EVICT
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};
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struct ttm_placement vmw_vram_gmr_ne_placement = {
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.fpfn = 0,
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.lpfn = 0,
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.num_placement = 2,
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.placement = vram_gmr_ne_placement_flags,
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.num_busy_placement = 1,
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.busy_placement = &gmr_ne_placement_flags
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};
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struct ttm_placement vmw_vram_sys_placement = {
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.fpfn = 0,
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.lpfn = 0,
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.num_placement = 1,
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.placement = &vram_placement_flags,
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.num_busy_placement = 1,
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.busy_placement = &sys_placement_flags
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};
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struct ttm_placement vmw_vram_ne_placement = {
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.fpfn = 0,
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.lpfn = 0,
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.num_placement = 1,
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.placement = &vram_ne_placement_flags,
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.num_busy_placement = 1,
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.busy_placement = &vram_ne_placement_flags
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};
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struct ttm_placement vmw_sys_placement = {
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.fpfn = 0,
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.lpfn = 0,
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.num_placement = 1,
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.placement = &sys_placement_flags,
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.num_busy_placement = 1,
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.busy_placement = &sys_placement_flags
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};
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static uint32_t evictable_placement_flags[] = {
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TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED,
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TTM_PL_FLAG_VRAM | TTM_PL_FLAG_CACHED,
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VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED
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};
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struct ttm_placement vmw_evictable_placement = {
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.fpfn = 0,
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.lpfn = 0,
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.num_placement = 3,
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.placement = evictable_placement_flags,
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.num_busy_placement = 1,
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.busy_placement = &sys_placement_flags
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};
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struct ttm_placement vmw_srf_placement = {
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.fpfn = 0,
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.lpfn = 0,
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.num_placement = 1,
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.num_busy_placement = 2,
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.placement = &gmr_placement_flags,
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.busy_placement = gmr_vram_placement_flags
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};
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struct vmw_ttm_tt {
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struct ttm_tt ttm;
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struct vmw_private *dev_priv;
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int gmr_id;
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};
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static int vmw_ttm_bind(struct ttm_tt *ttm, struct ttm_mem_reg *bo_mem)
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{
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struct vmw_ttm_tt *vmw_be = container_of(ttm, struct vmw_ttm_tt, ttm);
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vmw_be->gmr_id = bo_mem->start;
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return vmw_gmr_bind(vmw_be->dev_priv, ttm->pages,
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ttm->num_pages, vmw_be->gmr_id);
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}
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static int vmw_ttm_unbind(struct ttm_tt *ttm)
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{
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struct vmw_ttm_tt *vmw_be = container_of(ttm, struct vmw_ttm_tt, ttm);
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vmw_gmr_unbind(vmw_be->dev_priv, vmw_be->gmr_id);
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return 0;
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}
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static void vmw_ttm_destroy(struct ttm_tt *ttm)
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{
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struct vmw_ttm_tt *vmw_be = container_of(ttm, struct vmw_ttm_tt, ttm);
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ttm_tt_fini(ttm);
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kfree(vmw_be);
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}
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static struct ttm_backend_func vmw_ttm_func = {
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.bind = vmw_ttm_bind,
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.unbind = vmw_ttm_unbind,
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.destroy = vmw_ttm_destroy,
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};
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struct ttm_tt *vmw_ttm_tt_create(struct ttm_bo_device *bdev,
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unsigned long size, uint32_t page_flags,
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struct page *dummy_read_page)
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{
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struct vmw_ttm_tt *vmw_be;
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vmw_be = kmalloc(sizeof(*vmw_be), GFP_KERNEL);
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if (!vmw_be)
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return NULL;
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vmw_be->ttm.func = &vmw_ttm_func;
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vmw_be->dev_priv = container_of(bdev, struct vmw_private, bdev);
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if (ttm_tt_init(&vmw_be->ttm, bdev, size, page_flags, dummy_read_page)) {
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kfree(vmw_be);
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return NULL;
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}
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return &vmw_be->ttm;
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}
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int vmw_invalidate_caches(struct ttm_bo_device *bdev, uint32_t flags)
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{
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return 0;
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}
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int vmw_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
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struct ttm_mem_type_manager *man)
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{
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switch (type) {
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case TTM_PL_SYSTEM:
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/* System memory */
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man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
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man->available_caching = TTM_PL_FLAG_CACHED;
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man->default_caching = TTM_PL_FLAG_CACHED;
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break;
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case TTM_PL_VRAM:
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/* "On-card" video ram */
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man->func = &ttm_bo_manager_func;
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man->gpu_offset = 0;
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man->flags = TTM_MEMTYPE_FLAG_FIXED | TTM_MEMTYPE_FLAG_MAPPABLE;
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man->available_caching = TTM_PL_FLAG_CACHED;
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man->default_caching = TTM_PL_FLAG_CACHED;
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break;
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case VMW_PL_GMR:
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/*
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* "Guest Memory Regions" is an aperture like feature with
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* one slot per bo. There is an upper limit of the number of
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* slots as well as the bo size.
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*/
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man->func = &vmw_gmrid_manager_func;
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man->gpu_offset = 0;
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man->flags = TTM_MEMTYPE_FLAG_CMA | TTM_MEMTYPE_FLAG_MAPPABLE;
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man->available_caching = TTM_PL_FLAG_CACHED;
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man->default_caching = TTM_PL_FLAG_CACHED;
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break;
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default:
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DRM_ERROR("Unsupported memory type %u\n", (unsigned)type);
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return -EINVAL;
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}
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return 0;
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}
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void vmw_evict_flags(struct ttm_buffer_object *bo,
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struct ttm_placement *placement)
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{
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*placement = vmw_sys_placement;
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}
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static int vmw_verify_access(struct ttm_buffer_object *bo, struct file *filp)
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{
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struct ttm_object_file *tfile =
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vmw_fpriv((struct drm_file *)filp->private_data)->tfile;
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return vmw_user_dmabuf_verify_access(bo, tfile);
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}
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static int vmw_ttm_io_mem_reserve(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem)
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{
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struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
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struct vmw_private *dev_priv = container_of(bdev, struct vmw_private, bdev);
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mem->bus.addr = NULL;
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mem->bus.is_iomem = false;
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mem->bus.offset = 0;
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mem->bus.size = mem->num_pages << PAGE_SHIFT;
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mem->bus.base = 0;
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if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE))
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return -EINVAL;
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switch (mem->mem_type) {
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case TTM_PL_SYSTEM:
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case VMW_PL_GMR:
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return 0;
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case TTM_PL_VRAM:
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mem->bus.offset = mem->start << PAGE_SHIFT;
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mem->bus.base = dev_priv->vram_start;
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mem->bus.is_iomem = true;
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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static void vmw_ttm_io_mem_free(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem)
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{
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}
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static int vmw_ttm_fault_reserve_notify(struct ttm_buffer_object *bo)
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{
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return 0;
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}
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/**
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* FIXME: We're using the old vmware polling method to sync.
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* Do this with fences instead.
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*/
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static void *vmw_sync_obj_ref(void *sync_obj)
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{
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return (void *)
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vmw_fence_obj_reference((struct vmw_fence_obj *) sync_obj);
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}
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static void vmw_sync_obj_unref(void **sync_obj)
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{
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vmw_fence_obj_unreference((struct vmw_fence_obj **) sync_obj);
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}
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static int vmw_sync_obj_flush(void *sync_obj)
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{
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vmw_fence_obj_flush((struct vmw_fence_obj *) sync_obj);
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return 0;
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}
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static bool vmw_sync_obj_signaled(void *sync_obj)
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{
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return vmw_fence_obj_signaled((struct vmw_fence_obj *) sync_obj,
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DRM_VMW_FENCE_FLAG_EXEC);
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}
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static int vmw_sync_obj_wait(void *sync_obj, bool lazy, bool interruptible)
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{
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return vmw_fence_obj_wait((struct vmw_fence_obj *) sync_obj,
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DRM_VMW_FENCE_FLAG_EXEC,
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lazy, interruptible,
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VMW_FENCE_WAIT_TIMEOUT);
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}
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struct ttm_bo_driver vmw_bo_driver = {
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.ttm_tt_create = &vmw_ttm_tt_create,
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.ttm_tt_populate = &ttm_pool_populate,
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.ttm_tt_unpopulate = &ttm_pool_unpopulate,
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.invalidate_caches = vmw_invalidate_caches,
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.init_mem_type = vmw_init_mem_type,
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.evict_flags = vmw_evict_flags,
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.move = NULL,
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.verify_access = vmw_verify_access,
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.sync_obj_signaled = vmw_sync_obj_signaled,
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.sync_obj_wait = vmw_sync_obj_wait,
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.sync_obj_flush = vmw_sync_obj_flush,
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.sync_obj_unref = vmw_sync_obj_unref,
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.sync_obj_ref = vmw_sync_obj_ref,
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.move_notify = NULL,
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.swap_notify = NULL,
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.fault_reserve_notify = &vmw_ttm_fault_reserve_notify,
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.io_mem_reserve = &vmw_ttm_io_mem_reserve,
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.io_mem_free = &vmw_ttm_io_mem_free,
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};
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