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0b17fc08e3
Calculate GPU offset within vmwgfx driver itself without depending on bo->offset. Signed-off-by: Nirmoy Das <nirmoy.das@amd.com> Acked-by: Christian König <christian.koenig@amd.com> Link: https://patchwork.freedesktop.org/patch/372933/ Signed-off-by: Christian König <christian.koenig@amd.com>
873 lines
22 KiB
C
873 lines
22 KiB
C
// SPDX-License-Identifier: GPL-2.0 OR MIT
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/**************************************************************************
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*
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* Copyright 2009-2015 VMware, Inc., Palo Alto, CA., USA
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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 const struct ttm_place vram_placement_flags = {
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.fpfn = 0,
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.lpfn = 0,
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.flags = TTM_PL_FLAG_VRAM | TTM_PL_FLAG_CACHED
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};
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static const struct ttm_place vram_ne_placement_flags = {
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.fpfn = 0,
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.lpfn = 0,
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.flags = TTM_PL_FLAG_VRAM | TTM_PL_FLAG_CACHED | TTM_PL_FLAG_NO_EVICT
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};
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static const struct ttm_place sys_placement_flags = {
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.fpfn = 0,
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.lpfn = 0,
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.flags = TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED
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};
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static const struct ttm_place sys_ne_placement_flags = {
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.fpfn = 0,
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.lpfn = 0,
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.flags = TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED | TTM_PL_FLAG_NO_EVICT
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};
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static const struct ttm_place gmr_placement_flags = {
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.fpfn = 0,
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.lpfn = 0,
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.flags = VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED
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};
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static const struct ttm_place gmr_ne_placement_flags = {
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.fpfn = 0,
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.lpfn = 0,
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.flags = VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED | TTM_PL_FLAG_NO_EVICT
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};
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static const struct ttm_place mob_placement_flags = {
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.fpfn = 0,
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.lpfn = 0,
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.flags = VMW_PL_FLAG_MOB | TTM_PL_FLAG_CACHED
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};
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static const struct ttm_place mob_ne_placement_flags = {
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.fpfn = 0,
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.lpfn = 0,
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.flags = VMW_PL_FLAG_MOB | TTM_PL_FLAG_CACHED | TTM_PL_FLAG_NO_EVICT
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};
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struct ttm_placement vmw_vram_placement = {
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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 const struct ttm_place vram_gmr_placement_flags[] = {
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{
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.fpfn = 0,
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.lpfn = 0,
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.flags = TTM_PL_FLAG_VRAM | TTM_PL_FLAG_CACHED
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}, {
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.fpfn = 0,
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.lpfn = 0,
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.flags = VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED
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}
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};
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static const struct ttm_place gmr_vram_placement_flags[] = {
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{
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.fpfn = 0,
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.lpfn = 0,
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.flags = VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED
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}, {
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.fpfn = 0,
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.lpfn = 0,
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.flags = TTM_PL_FLAG_VRAM | TTM_PL_FLAG_CACHED
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}
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};
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struct ttm_placement vmw_vram_gmr_placement = {
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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 const struct ttm_place vram_gmr_ne_placement_flags[] = {
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{
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.fpfn = 0,
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.lpfn = 0,
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.flags = TTM_PL_FLAG_VRAM | TTM_PL_FLAG_CACHED |
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TTM_PL_FLAG_NO_EVICT
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}, {
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.fpfn = 0,
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.lpfn = 0,
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.flags = VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED |
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TTM_PL_FLAG_NO_EVICT
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}
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};
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struct ttm_placement vmw_vram_gmr_ne_placement = {
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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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.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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.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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.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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struct ttm_placement vmw_sys_ne_placement = {
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.num_placement = 1,
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.placement = &sys_ne_placement_flags,
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.num_busy_placement = 1,
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.busy_placement = &sys_ne_placement_flags
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};
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static const struct ttm_place evictable_placement_flags[] = {
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{
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.fpfn = 0,
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.lpfn = 0,
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.flags = TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED
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}, {
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.fpfn = 0,
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.lpfn = 0,
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.flags = TTM_PL_FLAG_VRAM | TTM_PL_FLAG_CACHED
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}, {
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.fpfn = 0,
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.lpfn = 0,
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.flags = VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED
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}, {
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.fpfn = 0,
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.lpfn = 0,
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.flags = VMW_PL_FLAG_MOB | TTM_PL_FLAG_CACHED
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}
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};
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static const struct ttm_place nonfixed_placement_flags[] = {
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{
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.fpfn = 0,
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.lpfn = 0,
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.flags = TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED
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}, {
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.fpfn = 0,
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.lpfn = 0,
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.flags = VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED
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}, {
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.fpfn = 0,
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.lpfn = 0,
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.flags = VMW_PL_FLAG_MOB | TTM_PL_FLAG_CACHED
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}
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};
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struct ttm_placement vmw_evictable_placement = {
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.num_placement = 4,
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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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.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 ttm_placement vmw_mob_placement = {
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.num_placement = 1,
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.num_busy_placement = 1,
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.placement = &mob_placement_flags,
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.busy_placement = &mob_placement_flags
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};
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struct ttm_placement vmw_mob_ne_placement = {
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.num_placement = 1,
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.num_busy_placement = 1,
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.placement = &mob_ne_placement_flags,
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.busy_placement = &mob_ne_placement_flags
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};
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struct ttm_placement vmw_nonfixed_placement = {
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.num_placement = 3,
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.placement = nonfixed_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 vmw_ttm_tt {
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struct ttm_dma_tt dma_ttm;
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struct vmw_private *dev_priv;
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int gmr_id;
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struct vmw_mob *mob;
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int mem_type;
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struct sg_table sgt;
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struct vmw_sg_table vsgt;
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uint64_t sg_alloc_size;
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bool mapped;
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};
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const size_t vmw_tt_size = sizeof(struct vmw_ttm_tt);
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/**
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* Helper functions to advance a struct vmw_piter iterator.
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*
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* @viter: Pointer to the iterator.
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*
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* These functions return false if past the end of the list,
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* true otherwise. Functions are selected depending on the current
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* DMA mapping mode.
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*/
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static bool __vmw_piter_non_sg_next(struct vmw_piter *viter)
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{
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return ++(viter->i) < viter->num_pages;
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}
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static bool __vmw_piter_sg_next(struct vmw_piter *viter)
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{
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bool ret = __vmw_piter_non_sg_next(viter);
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return __sg_page_iter_dma_next(&viter->iter) && ret;
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}
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/**
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* Helper functions to return a pointer to the current page.
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*
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* @viter: Pointer to the iterator
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*
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* These functions return a pointer to the page currently
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* pointed to by @viter. Functions are selected depending on the
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* current mapping mode.
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*/
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static struct page *__vmw_piter_non_sg_page(struct vmw_piter *viter)
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{
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return viter->pages[viter->i];
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}
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/**
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* Helper functions to return the DMA address of the current page.
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*
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* @viter: Pointer to the iterator
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*
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* These functions return the DMA address of the page currently
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* pointed to by @viter. Functions are selected depending on the
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* current mapping mode.
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*/
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static dma_addr_t __vmw_piter_phys_addr(struct vmw_piter *viter)
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{
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return page_to_phys(viter->pages[viter->i]);
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}
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static dma_addr_t __vmw_piter_dma_addr(struct vmw_piter *viter)
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{
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return viter->addrs[viter->i];
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}
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static dma_addr_t __vmw_piter_sg_addr(struct vmw_piter *viter)
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{
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return sg_page_iter_dma_address(&viter->iter);
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}
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/**
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* vmw_piter_start - Initialize a struct vmw_piter.
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*
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* @viter: Pointer to the iterator to initialize
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* @vsgt: Pointer to a struct vmw_sg_table to initialize from
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*
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* Note that we're following the convention of __sg_page_iter_start, so that
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* the iterator doesn't point to a valid page after initialization; it has
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* to be advanced one step first.
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*/
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void vmw_piter_start(struct vmw_piter *viter, const struct vmw_sg_table *vsgt,
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unsigned long p_offset)
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{
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viter->i = p_offset - 1;
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viter->num_pages = vsgt->num_pages;
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viter->page = &__vmw_piter_non_sg_page;
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viter->pages = vsgt->pages;
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switch (vsgt->mode) {
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case vmw_dma_phys:
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viter->next = &__vmw_piter_non_sg_next;
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viter->dma_address = &__vmw_piter_phys_addr;
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break;
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case vmw_dma_alloc_coherent:
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viter->next = &__vmw_piter_non_sg_next;
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viter->dma_address = &__vmw_piter_dma_addr;
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viter->addrs = vsgt->addrs;
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break;
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case vmw_dma_map_populate:
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case vmw_dma_map_bind:
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viter->next = &__vmw_piter_sg_next;
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viter->dma_address = &__vmw_piter_sg_addr;
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__sg_page_iter_start(&viter->iter.base, vsgt->sgt->sgl,
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vsgt->sgt->orig_nents, p_offset);
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break;
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default:
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BUG();
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}
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}
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/**
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* vmw_ttm_unmap_from_dma - unmap device addresses previsouly mapped for
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* TTM pages
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*
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* @vmw_tt: Pointer to a struct vmw_ttm_backend
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*
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* Used to free dma mappings previously mapped by vmw_ttm_map_for_dma.
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*/
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static void vmw_ttm_unmap_from_dma(struct vmw_ttm_tt *vmw_tt)
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{
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struct device *dev = vmw_tt->dev_priv->dev->dev;
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dma_unmap_sg(dev, vmw_tt->sgt.sgl, vmw_tt->sgt.nents,
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DMA_BIDIRECTIONAL);
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vmw_tt->sgt.nents = vmw_tt->sgt.orig_nents;
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}
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/**
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* vmw_ttm_map_for_dma - map TTM pages to get device addresses
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*
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* @vmw_tt: Pointer to a struct vmw_ttm_backend
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*
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* This function is used to get device addresses from the kernel DMA layer.
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* However, it's violating the DMA API in that when this operation has been
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* performed, it's illegal for the CPU to write to the pages without first
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* unmapping the DMA mappings, or calling dma_sync_sg_for_cpu(). It is
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* therefore only legal to call this function if we know that the function
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* dma_sync_sg_for_cpu() is a NOP, and dma_sync_sg_for_device() is at most
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* a CPU write buffer flush.
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*/
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static int vmw_ttm_map_for_dma(struct vmw_ttm_tt *vmw_tt)
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{
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struct device *dev = vmw_tt->dev_priv->dev->dev;
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int ret;
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ret = dma_map_sg(dev, vmw_tt->sgt.sgl, vmw_tt->sgt.orig_nents,
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DMA_BIDIRECTIONAL);
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if (unlikely(ret == 0))
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return -ENOMEM;
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vmw_tt->sgt.nents = ret;
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return 0;
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}
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/**
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* vmw_ttm_map_dma - Make sure TTM pages are visible to the device
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*
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* @vmw_tt: Pointer to a struct vmw_ttm_tt
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*
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* Select the correct function for and make sure the TTM pages are
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* visible to the device. Allocate storage for the device mappings.
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* If a mapping has already been performed, indicated by the storage
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* pointer being non NULL, the function returns success.
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*/
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static int vmw_ttm_map_dma(struct vmw_ttm_tt *vmw_tt)
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{
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struct vmw_private *dev_priv = vmw_tt->dev_priv;
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struct ttm_mem_global *glob = vmw_mem_glob(dev_priv);
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struct vmw_sg_table *vsgt = &vmw_tt->vsgt;
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struct ttm_operation_ctx ctx = {
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.interruptible = true,
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.no_wait_gpu = false
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};
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struct vmw_piter iter;
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dma_addr_t old;
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int ret = 0;
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static size_t sgl_size;
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static size_t sgt_size;
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if (vmw_tt->mapped)
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return 0;
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vsgt->mode = dev_priv->map_mode;
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vsgt->pages = vmw_tt->dma_ttm.ttm.pages;
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vsgt->num_pages = vmw_tt->dma_ttm.ttm.num_pages;
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vsgt->addrs = vmw_tt->dma_ttm.dma_address;
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vsgt->sgt = &vmw_tt->sgt;
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switch (dev_priv->map_mode) {
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case vmw_dma_map_bind:
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case vmw_dma_map_populate:
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if (unlikely(!sgl_size)) {
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sgl_size = ttm_round_pot(sizeof(struct scatterlist));
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sgt_size = ttm_round_pot(sizeof(struct sg_table));
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}
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vmw_tt->sg_alloc_size = sgt_size + sgl_size * vsgt->num_pages;
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ret = ttm_mem_global_alloc(glob, vmw_tt->sg_alloc_size, &ctx);
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if (unlikely(ret != 0))
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return ret;
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ret = __sg_alloc_table_from_pages
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(&vmw_tt->sgt, vsgt->pages, vsgt->num_pages, 0,
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(unsigned long) vsgt->num_pages << PAGE_SHIFT,
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dma_get_max_seg_size(dev_priv->dev->dev),
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GFP_KERNEL);
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if (unlikely(ret != 0))
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goto out_sg_alloc_fail;
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if (vsgt->num_pages > vmw_tt->sgt.nents) {
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uint64_t over_alloc =
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sgl_size * (vsgt->num_pages -
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vmw_tt->sgt.nents);
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ttm_mem_global_free(glob, over_alloc);
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vmw_tt->sg_alloc_size -= over_alloc;
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}
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ret = vmw_ttm_map_for_dma(vmw_tt);
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if (unlikely(ret != 0))
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goto out_map_fail;
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break;
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default:
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break;
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}
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old = ~((dma_addr_t) 0);
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vmw_tt->vsgt.num_regions = 0;
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for (vmw_piter_start(&iter, vsgt, 0); vmw_piter_next(&iter);) {
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dma_addr_t cur = vmw_piter_dma_addr(&iter);
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if (cur != old + PAGE_SIZE)
|
|
vmw_tt->vsgt.num_regions++;
|
|
old = cur;
|
|
}
|
|
|
|
vmw_tt->mapped = true;
|
|
return 0;
|
|
|
|
out_map_fail:
|
|
sg_free_table(vmw_tt->vsgt.sgt);
|
|
vmw_tt->vsgt.sgt = NULL;
|
|
out_sg_alloc_fail:
|
|
ttm_mem_global_free(glob, vmw_tt->sg_alloc_size);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* vmw_ttm_unmap_dma - Tear down any TTM page device mappings
|
|
*
|
|
* @vmw_tt: Pointer to a struct vmw_ttm_tt
|
|
*
|
|
* Tear down any previously set up device DMA mappings and free
|
|
* any storage space allocated for them. If there are no mappings set up,
|
|
* this function is a NOP.
|
|
*/
|
|
static void vmw_ttm_unmap_dma(struct vmw_ttm_tt *vmw_tt)
|
|
{
|
|
struct vmw_private *dev_priv = vmw_tt->dev_priv;
|
|
|
|
if (!vmw_tt->vsgt.sgt)
|
|
return;
|
|
|
|
switch (dev_priv->map_mode) {
|
|
case vmw_dma_map_bind:
|
|
case vmw_dma_map_populate:
|
|
vmw_ttm_unmap_from_dma(vmw_tt);
|
|
sg_free_table(vmw_tt->vsgt.sgt);
|
|
vmw_tt->vsgt.sgt = NULL;
|
|
ttm_mem_global_free(vmw_mem_glob(dev_priv),
|
|
vmw_tt->sg_alloc_size);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
vmw_tt->mapped = false;
|
|
}
|
|
|
|
|
|
/**
|
|
* vmw_bo_map_dma - Make sure buffer object pages are visible to the device
|
|
*
|
|
* @bo: Pointer to a struct ttm_buffer_object
|
|
*
|
|
* Wrapper around vmw_ttm_map_dma, that takes a TTM buffer object pointer
|
|
* instead of a pointer to a struct vmw_ttm_backend as argument.
|
|
* Note that the buffer object must be either pinned or reserved before
|
|
* calling this function.
|
|
*/
|
|
int vmw_bo_map_dma(struct ttm_buffer_object *bo)
|
|
{
|
|
struct vmw_ttm_tt *vmw_tt =
|
|
container_of(bo->ttm, struct vmw_ttm_tt, dma_ttm.ttm);
|
|
|
|
return vmw_ttm_map_dma(vmw_tt);
|
|
}
|
|
|
|
|
|
/**
|
|
* vmw_bo_unmap_dma - Make sure buffer object pages are visible to the device
|
|
*
|
|
* @bo: Pointer to a struct ttm_buffer_object
|
|
*
|
|
* Wrapper around vmw_ttm_unmap_dma, that takes a TTM buffer object pointer
|
|
* instead of a pointer to a struct vmw_ttm_backend as argument.
|
|
*/
|
|
void vmw_bo_unmap_dma(struct ttm_buffer_object *bo)
|
|
{
|
|
struct vmw_ttm_tt *vmw_tt =
|
|
container_of(bo->ttm, struct vmw_ttm_tt, dma_ttm.ttm);
|
|
|
|
vmw_ttm_unmap_dma(vmw_tt);
|
|
}
|
|
|
|
|
|
/**
|
|
* vmw_bo_sg_table - Return a struct vmw_sg_table object for a
|
|
* TTM buffer object
|
|
*
|
|
* @bo: Pointer to a struct ttm_buffer_object
|
|
*
|
|
* Returns a pointer to a struct vmw_sg_table object. The object should
|
|
* not be freed after use.
|
|
* Note that for the device addresses to be valid, the buffer object must
|
|
* either be reserved or pinned.
|
|
*/
|
|
const struct vmw_sg_table *vmw_bo_sg_table(struct ttm_buffer_object *bo)
|
|
{
|
|
struct vmw_ttm_tt *vmw_tt =
|
|
container_of(bo->ttm, struct vmw_ttm_tt, dma_ttm.ttm);
|
|
|
|
return &vmw_tt->vsgt;
|
|
}
|
|
|
|
|
|
static int vmw_ttm_bind(struct ttm_tt *ttm, struct ttm_mem_reg *bo_mem)
|
|
{
|
|
struct vmw_ttm_tt *vmw_be =
|
|
container_of(ttm, struct vmw_ttm_tt, dma_ttm.ttm);
|
|
int ret;
|
|
|
|
ret = vmw_ttm_map_dma(vmw_be);
|
|
if (unlikely(ret != 0))
|
|
return ret;
|
|
|
|
vmw_be->gmr_id = bo_mem->start;
|
|
vmw_be->mem_type = bo_mem->mem_type;
|
|
|
|
switch (bo_mem->mem_type) {
|
|
case VMW_PL_GMR:
|
|
return vmw_gmr_bind(vmw_be->dev_priv, &vmw_be->vsgt,
|
|
ttm->num_pages, vmw_be->gmr_id);
|
|
case VMW_PL_MOB:
|
|
if (unlikely(vmw_be->mob == NULL)) {
|
|
vmw_be->mob =
|
|
vmw_mob_create(ttm->num_pages);
|
|
if (unlikely(vmw_be->mob == NULL))
|
|
return -ENOMEM;
|
|
}
|
|
|
|
return vmw_mob_bind(vmw_be->dev_priv, vmw_be->mob,
|
|
&vmw_be->vsgt, ttm->num_pages,
|
|
vmw_be->gmr_id);
|
|
default:
|
|
BUG();
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int vmw_ttm_unbind(struct ttm_tt *ttm)
|
|
{
|
|
struct vmw_ttm_tt *vmw_be =
|
|
container_of(ttm, struct vmw_ttm_tt, dma_ttm.ttm);
|
|
|
|
switch (vmw_be->mem_type) {
|
|
case VMW_PL_GMR:
|
|
vmw_gmr_unbind(vmw_be->dev_priv, vmw_be->gmr_id);
|
|
break;
|
|
case VMW_PL_MOB:
|
|
vmw_mob_unbind(vmw_be->dev_priv, vmw_be->mob);
|
|
break;
|
|
default:
|
|
BUG();
|
|
}
|
|
|
|
if (vmw_be->dev_priv->map_mode == vmw_dma_map_bind)
|
|
vmw_ttm_unmap_dma(vmw_be);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static void vmw_ttm_destroy(struct ttm_tt *ttm)
|
|
{
|
|
struct vmw_ttm_tt *vmw_be =
|
|
container_of(ttm, struct vmw_ttm_tt, dma_ttm.ttm);
|
|
|
|
vmw_ttm_unmap_dma(vmw_be);
|
|
if (vmw_be->dev_priv->map_mode == vmw_dma_alloc_coherent)
|
|
ttm_dma_tt_fini(&vmw_be->dma_ttm);
|
|
else
|
|
ttm_tt_fini(ttm);
|
|
|
|
if (vmw_be->mob)
|
|
vmw_mob_destroy(vmw_be->mob);
|
|
|
|
kfree(vmw_be);
|
|
}
|
|
|
|
|
|
static int vmw_ttm_populate(struct ttm_tt *ttm, struct ttm_operation_ctx *ctx)
|
|
{
|
|
struct vmw_ttm_tt *vmw_tt =
|
|
container_of(ttm, struct vmw_ttm_tt, dma_ttm.ttm);
|
|
struct vmw_private *dev_priv = vmw_tt->dev_priv;
|
|
struct ttm_mem_global *glob = vmw_mem_glob(dev_priv);
|
|
int ret;
|
|
|
|
if (ttm->state != tt_unpopulated)
|
|
return 0;
|
|
|
|
if (dev_priv->map_mode == vmw_dma_alloc_coherent) {
|
|
size_t size =
|
|
ttm_round_pot(ttm->num_pages * sizeof(dma_addr_t));
|
|
ret = ttm_mem_global_alloc(glob, size, ctx);
|
|
if (unlikely(ret != 0))
|
|
return ret;
|
|
|
|
ret = ttm_dma_populate(&vmw_tt->dma_ttm, dev_priv->dev->dev,
|
|
ctx);
|
|
if (unlikely(ret != 0))
|
|
ttm_mem_global_free(glob, size);
|
|
} else
|
|
ret = ttm_pool_populate(ttm, ctx);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void vmw_ttm_unpopulate(struct ttm_tt *ttm)
|
|
{
|
|
struct vmw_ttm_tt *vmw_tt = container_of(ttm, struct vmw_ttm_tt,
|
|
dma_ttm.ttm);
|
|
struct vmw_private *dev_priv = vmw_tt->dev_priv;
|
|
struct ttm_mem_global *glob = vmw_mem_glob(dev_priv);
|
|
|
|
|
|
if (vmw_tt->mob) {
|
|
vmw_mob_destroy(vmw_tt->mob);
|
|
vmw_tt->mob = NULL;
|
|
}
|
|
|
|
vmw_ttm_unmap_dma(vmw_tt);
|
|
if (dev_priv->map_mode == vmw_dma_alloc_coherent) {
|
|
size_t size =
|
|
ttm_round_pot(ttm->num_pages * sizeof(dma_addr_t));
|
|
|
|
ttm_dma_unpopulate(&vmw_tt->dma_ttm, dev_priv->dev->dev);
|
|
ttm_mem_global_free(glob, size);
|
|
} else
|
|
ttm_pool_unpopulate(ttm);
|
|
}
|
|
|
|
static struct ttm_backend_func vmw_ttm_func = {
|
|
.bind = vmw_ttm_bind,
|
|
.unbind = vmw_ttm_unbind,
|
|
.destroy = vmw_ttm_destroy,
|
|
};
|
|
|
|
static struct ttm_tt *vmw_ttm_tt_create(struct ttm_buffer_object *bo,
|
|
uint32_t page_flags)
|
|
{
|
|
struct vmw_ttm_tt *vmw_be;
|
|
int ret;
|
|
|
|
vmw_be = kzalloc(sizeof(*vmw_be), GFP_KERNEL);
|
|
if (!vmw_be)
|
|
return NULL;
|
|
|
|
vmw_be->dma_ttm.ttm.func = &vmw_ttm_func;
|
|
vmw_be->dev_priv = container_of(bo->bdev, struct vmw_private, bdev);
|
|
vmw_be->mob = NULL;
|
|
|
|
if (vmw_be->dev_priv->map_mode == vmw_dma_alloc_coherent)
|
|
ret = ttm_dma_tt_init(&vmw_be->dma_ttm, bo, page_flags);
|
|
else
|
|
ret = ttm_tt_init(&vmw_be->dma_ttm.ttm, bo, page_flags);
|
|
if (unlikely(ret != 0))
|
|
goto out_no_init;
|
|
|
|
return &vmw_be->dma_ttm.ttm;
|
|
out_no_init:
|
|
kfree(vmw_be);
|
|
return NULL;
|
|
}
|
|
|
|
static int vmw_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_FLAG_CACHED;
|
|
man->default_caching = TTM_PL_FLAG_CACHED;
|
|
break;
|
|
case TTM_PL_VRAM:
|
|
/* "On-card" video ram */
|
|
man->func = &vmw_thp_func;
|
|
man->flags = TTM_MEMTYPE_FLAG_FIXED | TTM_MEMTYPE_FLAG_MAPPABLE;
|
|
man->available_caching = TTM_PL_FLAG_CACHED;
|
|
man->default_caching = TTM_PL_FLAG_CACHED;
|
|
break;
|
|
case VMW_PL_GMR:
|
|
case VMW_PL_MOB:
|
|
/*
|
|
* "Guest Memory Regions" is an aperture like feature with
|
|
* one slot per bo. There is an upper limit of the number of
|
|
* slots as well as the bo size.
|
|
*/
|
|
man->func = &vmw_gmrid_manager_func;
|
|
man->flags = TTM_MEMTYPE_FLAG_CMA | TTM_MEMTYPE_FLAG_MAPPABLE;
|
|
man->available_caching = TTM_PL_FLAG_CACHED;
|
|
man->default_caching = TTM_PL_FLAG_CACHED;
|
|
break;
|
|
default:
|
|
DRM_ERROR("Unsupported memory type %u\n", (unsigned)type);
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void vmw_evict_flags(struct ttm_buffer_object *bo,
|
|
struct ttm_placement *placement)
|
|
{
|
|
*placement = vmw_sys_placement;
|
|
}
|
|
|
|
static int vmw_verify_access(struct ttm_buffer_object *bo, struct file *filp)
|
|
{
|
|
struct ttm_object_file *tfile =
|
|
vmw_fpriv((struct drm_file *)filp->private_data)->tfile;
|
|
|
|
return vmw_user_bo_verify_access(bo, tfile);
|
|
}
|
|
|
|
static int vmw_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 vmw_private *dev_priv = container_of(bdev, struct vmw_private, bdev);
|
|
|
|
mem->bus.addr = NULL;
|
|
mem->bus.is_iomem = false;
|
|
mem->bus.offset = 0;
|
|
mem->bus.size = mem->num_pages << PAGE_SHIFT;
|
|
mem->bus.base = 0;
|
|
if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE))
|
|
return -EINVAL;
|
|
switch (mem->mem_type) {
|
|
case TTM_PL_SYSTEM:
|
|
case VMW_PL_GMR:
|
|
case VMW_PL_MOB:
|
|
return 0;
|
|
case TTM_PL_VRAM:
|
|
mem->bus.offset = mem->start << PAGE_SHIFT;
|
|
mem->bus.base = dev_priv->vram_start;
|
|
mem->bus.is_iomem = true;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void vmw_ttm_io_mem_free(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem)
|
|
{
|
|
}
|
|
|
|
static int vmw_ttm_fault_reserve_notify(struct ttm_buffer_object *bo)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* vmw_move_notify - TTM move_notify_callback
|
|
*
|
|
* @bo: The TTM buffer object about to move.
|
|
* @mem: The struct ttm_mem_reg indicating to what memory
|
|
* region the move is taking place.
|
|
*
|
|
* Calls move_notify for all subsystems needing it.
|
|
* (currently only resources).
|
|
*/
|
|
static void vmw_move_notify(struct ttm_buffer_object *bo,
|
|
bool evict,
|
|
struct ttm_mem_reg *mem)
|
|
{
|
|
vmw_bo_move_notify(bo, mem);
|
|
vmw_query_move_notify(bo, mem);
|
|
}
|
|
|
|
|
|
/**
|
|
* vmw_swap_notify - TTM move_notify_callback
|
|
*
|
|
* @bo: The TTM buffer object about to be swapped out.
|
|
*/
|
|
static void vmw_swap_notify(struct ttm_buffer_object *bo)
|
|
{
|
|
vmw_bo_swap_notify(bo);
|
|
(void) ttm_bo_wait(bo, false, false);
|
|
}
|
|
|
|
|
|
struct ttm_bo_driver vmw_bo_driver = {
|
|
.ttm_tt_create = &vmw_ttm_tt_create,
|
|
.ttm_tt_populate = &vmw_ttm_populate,
|
|
.ttm_tt_unpopulate = &vmw_ttm_unpopulate,
|
|
.init_mem_type = vmw_init_mem_type,
|
|
.eviction_valuable = ttm_bo_eviction_valuable,
|
|
.evict_flags = vmw_evict_flags,
|
|
.move = NULL,
|
|
.verify_access = vmw_verify_access,
|
|
.move_notify = vmw_move_notify,
|
|
.swap_notify = vmw_swap_notify,
|
|
.fault_reserve_notify = &vmw_ttm_fault_reserve_notify,
|
|
.io_mem_reserve = &vmw_ttm_io_mem_reserve,
|
|
.io_mem_free = &vmw_ttm_io_mem_free,
|
|
};
|