![Shyam Saini](/assets/img/avatar_default.png)
When some other buffer is immediately copied into allocated region. Replace calls to kmalloc followed by a memcpy with a direct call to kmemdup. Signed-off-by: Shyam Saini <mayhs11saini@gmail.com> Reviewed-by: Sinclair Yeh <syeh@vmare.com>
698 lines
19 KiB
C
698 lines
19 KiB
C
/**************************************************************************
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*
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* Copyright © 2012-2015 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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/*
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* If we set up the screen target otable, screen objects stop working.
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*/
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#define VMW_OTABLE_SETUP_SUB ((VMWGFX_ENABLE_SCREEN_TARGET_OTABLE ? 0 : 1))
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#ifdef CONFIG_64BIT
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#define VMW_PPN_SIZE 8
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#define VMW_MOBFMT_PTDEPTH_0 SVGA3D_MOBFMT_PTDEPTH64_0
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#define VMW_MOBFMT_PTDEPTH_1 SVGA3D_MOBFMT_PTDEPTH64_1
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#define VMW_MOBFMT_PTDEPTH_2 SVGA3D_MOBFMT_PTDEPTH64_2
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#else
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#define VMW_PPN_SIZE 4
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#define VMW_MOBFMT_PTDEPTH_0 SVGA3D_MOBFMT_PTDEPTH_0
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#define VMW_MOBFMT_PTDEPTH_1 SVGA3D_MOBFMT_PTDEPTH_1
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#define VMW_MOBFMT_PTDEPTH_2 SVGA3D_MOBFMT_PTDEPTH_2
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#endif
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/*
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* struct vmw_mob - Structure containing page table and metadata for a
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* Guest Memory OBject.
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*
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* @num_pages Number of pages that make up the page table.
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* @pt_level The indirection level of the page table. 0-2.
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* @pt_root_page DMA address of the level 0 page of the page table.
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*/
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struct vmw_mob {
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struct ttm_buffer_object *pt_bo;
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unsigned long num_pages;
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unsigned pt_level;
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dma_addr_t pt_root_page;
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uint32_t id;
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};
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/*
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* struct vmw_otable - Guest Memory OBject table metadata
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*
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* @size: Size of the table (page-aligned).
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* @page_table: Pointer to a struct vmw_mob holding the page table.
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*/
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static const struct vmw_otable pre_dx_tables[] = {
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{VMWGFX_NUM_MOB * SVGA3D_OTABLE_MOB_ENTRY_SIZE, NULL, true},
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{VMWGFX_NUM_GB_SURFACE * SVGA3D_OTABLE_SURFACE_ENTRY_SIZE, NULL, true},
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{VMWGFX_NUM_GB_CONTEXT * SVGA3D_OTABLE_CONTEXT_ENTRY_SIZE, NULL, true},
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{VMWGFX_NUM_GB_SHADER * SVGA3D_OTABLE_SHADER_ENTRY_SIZE, NULL, true},
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{VMWGFX_NUM_GB_SCREEN_TARGET * SVGA3D_OTABLE_SCREEN_TARGET_ENTRY_SIZE,
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NULL, VMWGFX_ENABLE_SCREEN_TARGET_OTABLE}
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};
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static const struct vmw_otable dx_tables[] = {
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{VMWGFX_NUM_MOB * SVGA3D_OTABLE_MOB_ENTRY_SIZE, NULL, true},
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{VMWGFX_NUM_GB_SURFACE * SVGA3D_OTABLE_SURFACE_ENTRY_SIZE, NULL, true},
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{VMWGFX_NUM_GB_CONTEXT * SVGA3D_OTABLE_CONTEXT_ENTRY_SIZE, NULL, true},
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{VMWGFX_NUM_GB_SHADER * SVGA3D_OTABLE_SHADER_ENTRY_SIZE, NULL, true},
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{VMWGFX_NUM_GB_SCREEN_TARGET * SVGA3D_OTABLE_SCREEN_TARGET_ENTRY_SIZE,
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NULL, VMWGFX_ENABLE_SCREEN_TARGET_OTABLE},
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{VMWGFX_NUM_DXCONTEXT * sizeof(SVGAOTableDXContextEntry), NULL, true},
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};
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static int vmw_mob_pt_populate(struct vmw_private *dev_priv,
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struct vmw_mob *mob);
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static void vmw_mob_pt_setup(struct vmw_mob *mob,
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struct vmw_piter data_iter,
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unsigned long num_data_pages);
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/*
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* vmw_setup_otable_base - Issue an object table base setup command to
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* the device
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*
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* @dev_priv: Pointer to a device private structure
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* @type: Type of object table base
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* @offset Start of table offset into dev_priv::otable_bo
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* @otable Pointer to otable metadata;
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*
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* This function returns -ENOMEM if it fails to reserve fifo space,
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* and may block waiting for fifo space.
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*/
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static int vmw_setup_otable_base(struct vmw_private *dev_priv,
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SVGAOTableType type,
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struct ttm_buffer_object *otable_bo,
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unsigned long offset,
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struct vmw_otable *otable)
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{
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struct {
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SVGA3dCmdHeader header;
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SVGA3dCmdSetOTableBase64 body;
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} *cmd;
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struct vmw_mob *mob;
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const struct vmw_sg_table *vsgt;
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struct vmw_piter iter;
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int ret;
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BUG_ON(otable->page_table != NULL);
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vsgt = vmw_bo_sg_table(otable_bo);
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vmw_piter_start(&iter, vsgt, offset >> PAGE_SHIFT);
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WARN_ON(!vmw_piter_next(&iter));
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mob = vmw_mob_create(otable->size >> PAGE_SHIFT);
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if (unlikely(mob == NULL)) {
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DRM_ERROR("Failed creating OTable page table.\n");
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return -ENOMEM;
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}
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if (otable->size <= PAGE_SIZE) {
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mob->pt_level = VMW_MOBFMT_PTDEPTH_0;
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mob->pt_root_page = vmw_piter_dma_addr(&iter);
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} else if (vsgt->num_regions == 1) {
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mob->pt_level = SVGA3D_MOBFMT_RANGE;
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mob->pt_root_page = vmw_piter_dma_addr(&iter);
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} else {
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ret = vmw_mob_pt_populate(dev_priv, mob);
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if (unlikely(ret != 0))
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goto out_no_populate;
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vmw_mob_pt_setup(mob, iter, otable->size >> PAGE_SHIFT);
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mob->pt_level += VMW_MOBFMT_PTDEPTH_1 - SVGA3D_MOBFMT_PTDEPTH_1;
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}
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cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
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if (unlikely(cmd == NULL)) {
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DRM_ERROR("Failed reserving FIFO space for OTable setup.\n");
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ret = -ENOMEM;
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goto out_no_fifo;
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}
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memset(cmd, 0, sizeof(*cmd));
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cmd->header.id = SVGA_3D_CMD_SET_OTABLE_BASE64;
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cmd->header.size = sizeof(cmd->body);
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cmd->body.type = type;
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cmd->body.baseAddress = mob->pt_root_page >> PAGE_SHIFT;
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cmd->body.sizeInBytes = otable->size;
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cmd->body.validSizeInBytes = 0;
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cmd->body.ptDepth = mob->pt_level;
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/*
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* The device doesn't support this, But the otable size is
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* determined at compile-time, so this BUG shouldn't trigger
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* randomly.
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*/
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BUG_ON(mob->pt_level == VMW_MOBFMT_PTDEPTH_2);
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vmw_fifo_commit(dev_priv, sizeof(*cmd));
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otable->page_table = mob;
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return 0;
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out_no_fifo:
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out_no_populate:
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vmw_mob_destroy(mob);
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return ret;
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}
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/*
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* vmw_takedown_otable_base - Issue an object table base takedown command
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* to the device
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*
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* @dev_priv: Pointer to a device private structure
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* @type: Type of object table base
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*
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*/
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static void vmw_takedown_otable_base(struct vmw_private *dev_priv,
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SVGAOTableType type,
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struct vmw_otable *otable)
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{
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struct {
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SVGA3dCmdHeader header;
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SVGA3dCmdSetOTableBase body;
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} *cmd;
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struct ttm_buffer_object *bo;
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if (otable->page_table == NULL)
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return;
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bo = otable->page_table->pt_bo;
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cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
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if (unlikely(cmd == NULL)) {
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DRM_ERROR("Failed reserving FIFO space for OTable "
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"takedown.\n");
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return;
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}
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memset(cmd, 0, sizeof(*cmd));
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cmd->header.id = SVGA_3D_CMD_SET_OTABLE_BASE;
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cmd->header.size = sizeof(cmd->body);
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cmd->body.type = type;
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cmd->body.baseAddress = 0;
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cmd->body.sizeInBytes = 0;
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cmd->body.validSizeInBytes = 0;
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cmd->body.ptDepth = SVGA3D_MOBFMT_INVALID;
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vmw_fifo_commit(dev_priv, sizeof(*cmd));
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if (bo) {
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int ret;
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ret = ttm_bo_reserve(bo, false, true, NULL);
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BUG_ON(ret != 0);
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vmw_fence_single_bo(bo, NULL);
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ttm_bo_unreserve(bo);
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}
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vmw_mob_destroy(otable->page_table);
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otable->page_table = NULL;
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}
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static int vmw_otable_batch_setup(struct vmw_private *dev_priv,
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struct vmw_otable_batch *batch)
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{
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unsigned long offset;
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unsigned long bo_size;
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struct vmw_otable *otables = batch->otables;
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SVGAOTableType i;
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int ret;
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bo_size = 0;
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for (i = 0; i < batch->num_otables; ++i) {
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if (!otables[i].enabled)
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continue;
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otables[i].size =
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(otables[i].size + PAGE_SIZE - 1) & PAGE_MASK;
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bo_size += otables[i].size;
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}
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ret = ttm_bo_create(&dev_priv->bdev, bo_size,
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ttm_bo_type_device,
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&vmw_sys_ne_placement,
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0, false, NULL,
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&batch->otable_bo);
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if (unlikely(ret != 0))
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goto out_no_bo;
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ret = ttm_bo_reserve(batch->otable_bo, false, true, NULL);
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BUG_ON(ret != 0);
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ret = vmw_bo_driver.ttm_tt_populate(batch->otable_bo->ttm);
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if (unlikely(ret != 0))
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goto out_unreserve;
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ret = vmw_bo_map_dma(batch->otable_bo);
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if (unlikely(ret != 0))
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goto out_unreserve;
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ttm_bo_unreserve(batch->otable_bo);
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offset = 0;
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for (i = 0; i < batch->num_otables; ++i) {
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if (!batch->otables[i].enabled)
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continue;
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ret = vmw_setup_otable_base(dev_priv, i, batch->otable_bo,
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offset,
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&otables[i]);
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if (unlikely(ret != 0))
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goto out_no_setup;
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offset += otables[i].size;
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}
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return 0;
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out_unreserve:
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ttm_bo_unreserve(batch->otable_bo);
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out_no_setup:
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for (i = 0; i < batch->num_otables; ++i) {
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if (batch->otables[i].enabled)
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vmw_takedown_otable_base(dev_priv, i,
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&batch->otables[i]);
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}
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ttm_bo_unref(&batch->otable_bo);
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out_no_bo:
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return ret;
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}
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/*
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* vmw_otables_setup - Set up guest backed memory object tables
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*
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* @dev_priv: Pointer to a device private structure
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*
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* Takes care of the device guest backed surface
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* initialization, by setting up the guest backed memory object tables.
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* Returns 0 on success and various error codes on failure. A successful return
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* means the object tables can be taken down using the vmw_otables_takedown
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* function.
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*/
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int vmw_otables_setup(struct vmw_private *dev_priv)
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{
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struct vmw_otable **otables = &dev_priv->otable_batch.otables;
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int ret;
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if (dev_priv->has_dx) {
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*otables = kmemdup(dx_tables, sizeof(dx_tables), GFP_KERNEL);
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if (*otables == NULL)
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return -ENOMEM;
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dev_priv->otable_batch.num_otables = ARRAY_SIZE(dx_tables);
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} else {
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*otables = kmemdup(pre_dx_tables, sizeof(pre_dx_tables),
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GFP_KERNEL);
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if (*otables == NULL)
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return -ENOMEM;
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dev_priv->otable_batch.num_otables = ARRAY_SIZE(pre_dx_tables);
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}
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ret = vmw_otable_batch_setup(dev_priv, &dev_priv->otable_batch);
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if (unlikely(ret != 0))
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goto out_setup;
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return 0;
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out_setup:
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kfree(*otables);
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return ret;
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}
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static void vmw_otable_batch_takedown(struct vmw_private *dev_priv,
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struct vmw_otable_batch *batch)
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{
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SVGAOTableType i;
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struct ttm_buffer_object *bo = batch->otable_bo;
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int ret;
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for (i = 0; i < batch->num_otables; ++i)
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if (batch->otables[i].enabled)
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vmw_takedown_otable_base(dev_priv, i,
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&batch->otables[i]);
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ret = ttm_bo_reserve(bo, false, true, NULL);
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BUG_ON(ret != 0);
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vmw_fence_single_bo(bo, NULL);
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ttm_bo_unreserve(bo);
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ttm_bo_unref(&batch->otable_bo);
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}
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/*
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* vmw_otables_takedown - Take down guest backed memory object tables
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*
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* @dev_priv: Pointer to a device private structure
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*
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* Take down the Guest Memory Object tables.
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*/
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void vmw_otables_takedown(struct vmw_private *dev_priv)
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{
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vmw_otable_batch_takedown(dev_priv, &dev_priv->otable_batch);
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kfree(dev_priv->otable_batch.otables);
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}
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/*
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* vmw_mob_calculate_pt_pages - Calculate the number of page table pages
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* needed for a guest backed memory object.
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*
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* @data_pages: Number of data pages in the memory object buffer.
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*/
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static unsigned long vmw_mob_calculate_pt_pages(unsigned long data_pages)
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{
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unsigned long data_size = data_pages * PAGE_SIZE;
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unsigned long tot_size = 0;
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while (likely(data_size > PAGE_SIZE)) {
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data_size = DIV_ROUND_UP(data_size, PAGE_SIZE);
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data_size *= VMW_PPN_SIZE;
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tot_size += (data_size + PAGE_SIZE - 1) & PAGE_MASK;
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}
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return tot_size >> PAGE_SHIFT;
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}
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/*
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* vmw_mob_create - Create a mob, but don't populate it.
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*
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* @data_pages: Number of data pages of the underlying buffer object.
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*/
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struct vmw_mob *vmw_mob_create(unsigned long data_pages)
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{
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struct vmw_mob *mob = kzalloc(sizeof(*mob), GFP_KERNEL);
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if (unlikely(mob == NULL))
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return NULL;
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mob->num_pages = vmw_mob_calculate_pt_pages(data_pages);
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return mob;
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}
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/*
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* vmw_mob_pt_populate - Populate the mob pagetable
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*
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* @mob: Pointer to the mob the pagetable of which we want to
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* populate.
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*
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* This function allocates memory to be used for the pagetable, and
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* adjusts TTM memory accounting accordingly. Returns ENOMEM if
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* memory resources aren't sufficient and may cause TTM buffer objects
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* to be swapped out by using the TTM memory accounting function.
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*/
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static int vmw_mob_pt_populate(struct vmw_private *dev_priv,
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struct vmw_mob *mob)
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{
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int ret;
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BUG_ON(mob->pt_bo != NULL);
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ret = ttm_bo_create(&dev_priv->bdev, mob->num_pages * PAGE_SIZE,
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ttm_bo_type_device,
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&vmw_sys_ne_placement,
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0, false, NULL, &mob->pt_bo);
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if (unlikely(ret != 0))
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return ret;
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ret = ttm_bo_reserve(mob->pt_bo, false, true, NULL);
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BUG_ON(ret != 0);
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ret = vmw_bo_driver.ttm_tt_populate(mob->pt_bo->ttm);
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if (unlikely(ret != 0))
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goto out_unreserve;
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ret = vmw_bo_map_dma(mob->pt_bo);
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if (unlikely(ret != 0))
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goto out_unreserve;
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ttm_bo_unreserve(mob->pt_bo);
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return 0;
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out_unreserve:
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ttm_bo_unreserve(mob->pt_bo);
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ttm_bo_unref(&mob->pt_bo);
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return ret;
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}
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/**
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* vmw_mob_assign_ppn - Assign a value to a page table entry
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*
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* @addr: Pointer to pointer to page table entry.
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* @val: The page table entry
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*
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* Assigns a value to a page table entry pointed to by *@addr and increments
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* *@addr according to the page table entry size.
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*/
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#if (VMW_PPN_SIZE == 8)
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static void vmw_mob_assign_ppn(u32 **addr, dma_addr_t val)
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{
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*((u64 *) *addr) = val >> PAGE_SHIFT;
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*addr += 2;
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}
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#else
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static void vmw_mob_assign_ppn(u32 **addr, dma_addr_t val)
|
|
{
|
|
*(*addr)++ = val >> PAGE_SHIFT;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* vmw_mob_build_pt - Build a pagetable
|
|
*
|
|
* @data_addr: Array of DMA addresses to the underlying buffer
|
|
* object's data pages.
|
|
* @num_data_pages: Number of buffer object data pages.
|
|
* @pt_pages: Array of page pointers to the page table pages.
|
|
*
|
|
* Returns the number of page table pages actually used.
|
|
* Uses atomic kmaps of highmem pages to avoid TLB thrashing.
|
|
*/
|
|
static unsigned long vmw_mob_build_pt(struct vmw_piter *data_iter,
|
|
unsigned long num_data_pages,
|
|
struct vmw_piter *pt_iter)
|
|
{
|
|
unsigned long pt_size = num_data_pages * VMW_PPN_SIZE;
|
|
unsigned long num_pt_pages = DIV_ROUND_UP(pt_size, PAGE_SIZE);
|
|
unsigned long pt_page;
|
|
u32 *addr, *save_addr;
|
|
unsigned long i;
|
|
struct page *page;
|
|
|
|
for (pt_page = 0; pt_page < num_pt_pages; ++pt_page) {
|
|
page = vmw_piter_page(pt_iter);
|
|
|
|
save_addr = addr = kmap_atomic(page);
|
|
|
|
for (i = 0; i < PAGE_SIZE / VMW_PPN_SIZE; ++i) {
|
|
vmw_mob_assign_ppn(&addr,
|
|
vmw_piter_dma_addr(data_iter));
|
|
if (unlikely(--num_data_pages == 0))
|
|
break;
|
|
WARN_ON(!vmw_piter_next(data_iter));
|
|
}
|
|
kunmap_atomic(save_addr);
|
|
vmw_piter_next(pt_iter);
|
|
}
|
|
|
|
return num_pt_pages;
|
|
}
|
|
|
|
/*
|
|
* vmw_mob_build_pt - Set up a multilevel mob pagetable
|
|
*
|
|
* @mob: Pointer to a mob whose page table needs setting up.
|
|
* @data_addr Array of DMA addresses to the buffer object's data
|
|
* pages.
|
|
* @num_data_pages: Number of buffer object data pages.
|
|
*
|
|
* Uses tail recursion to set up a multilevel mob page table.
|
|
*/
|
|
static void vmw_mob_pt_setup(struct vmw_mob *mob,
|
|
struct vmw_piter data_iter,
|
|
unsigned long num_data_pages)
|
|
{
|
|
unsigned long num_pt_pages = 0;
|
|
struct ttm_buffer_object *bo = mob->pt_bo;
|
|
struct vmw_piter save_pt_iter;
|
|
struct vmw_piter pt_iter;
|
|
const struct vmw_sg_table *vsgt;
|
|
int ret;
|
|
|
|
ret = ttm_bo_reserve(bo, false, true, NULL);
|
|
BUG_ON(ret != 0);
|
|
|
|
vsgt = vmw_bo_sg_table(bo);
|
|
vmw_piter_start(&pt_iter, vsgt, 0);
|
|
BUG_ON(!vmw_piter_next(&pt_iter));
|
|
mob->pt_level = 0;
|
|
while (likely(num_data_pages > 1)) {
|
|
++mob->pt_level;
|
|
BUG_ON(mob->pt_level > 2);
|
|
save_pt_iter = pt_iter;
|
|
num_pt_pages = vmw_mob_build_pt(&data_iter, num_data_pages,
|
|
&pt_iter);
|
|
data_iter = save_pt_iter;
|
|
num_data_pages = num_pt_pages;
|
|
}
|
|
|
|
mob->pt_root_page = vmw_piter_dma_addr(&save_pt_iter);
|
|
ttm_bo_unreserve(bo);
|
|
}
|
|
|
|
/*
|
|
* vmw_mob_destroy - Destroy a mob, unpopulating first if necessary.
|
|
*
|
|
* @mob: Pointer to a mob to destroy.
|
|
*/
|
|
void vmw_mob_destroy(struct vmw_mob *mob)
|
|
{
|
|
if (mob->pt_bo)
|
|
ttm_bo_unref(&mob->pt_bo);
|
|
kfree(mob);
|
|
}
|
|
|
|
/*
|
|
* vmw_mob_unbind - Hide a mob from the device.
|
|
*
|
|
* @dev_priv: Pointer to a device private.
|
|
* @mob_id: Device id of the mob to unbind.
|
|
*/
|
|
void vmw_mob_unbind(struct vmw_private *dev_priv,
|
|
struct vmw_mob *mob)
|
|
{
|
|
struct {
|
|
SVGA3dCmdHeader header;
|
|
SVGA3dCmdDestroyGBMob body;
|
|
} *cmd;
|
|
int ret;
|
|
struct ttm_buffer_object *bo = mob->pt_bo;
|
|
|
|
if (bo) {
|
|
ret = ttm_bo_reserve(bo, false, true, NULL);
|
|
/*
|
|
* Noone else should be using this buffer.
|
|
*/
|
|
BUG_ON(ret != 0);
|
|
}
|
|
|
|
cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
|
|
if (unlikely(cmd == NULL)) {
|
|
DRM_ERROR("Failed reserving FIFO space for Memory "
|
|
"Object unbinding.\n");
|
|
} else {
|
|
cmd->header.id = SVGA_3D_CMD_DESTROY_GB_MOB;
|
|
cmd->header.size = sizeof(cmd->body);
|
|
cmd->body.mobid = mob->id;
|
|
vmw_fifo_commit(dev_priv, sizeof(*cmd));
|
|
}
|
|
if (bo) {
|
|
vmw_fence_single_bo(bo, NULL);
|
|
ttm_bo_unreserve(bo);
|
|
}
|
|
vmw_fifo_resource_dec(dev_priv);
|
|
}
|
|
|
|
/*
|
|
* vmw_mob_bind - Make a mob visible to the device after first
|
|
* populating it if necessary.
|
|
*
|
|
* @dev_priv: Pointer to a device private.
|
|
* @mob: Pointer to the mob we're making visible.
|
|
* @data_addr: Array of DMA addresses to the data pages of the underlying
|
|
* buffer object.
|
|
* @num_data_pages: Number of data pages of the underlying buffer
|
|
* object.
|
|
* @mob_id: Device id of the mob to bind
|
|
*
|
|
* This function is intended to be interfaced with the ttm_tt backend
|
|
* code.
|
|
*/
|
|
int vmw_mob_bind(struct vmw_private *dev_priv,
|
|
struct vmw_mob *mob,
|
|
const struct vmw_sg_table *vsgt,
|
|
unsigned long num_data_pages,
|
|
int32_t mob_id)
|
|
{
|
|
int ret;
|
|
bool pt_set_up = false;
|
|
struct vmw_piter data_iter;
|
|
struct {
|
|
SVGA3dCmdHeader header;
|
|
SVGA3dCmdDefineGBMob64 body;
|
|
} *cmd;
|
|
|
|
mob->id = mob_id;
|
|
vmw_piter_start(&data_iter, vsgt, 0);
|
|
if (unlikely(!vmw_piter_next(&data_iter)))
|
|
return 0;
|
|
|
|
if (likely(num_data_pages == 1)) {
|
|
mob->pt_level = VMW_MOBFMT_PTDEPTH_0;
|
|
mob->pt_root_page = vmw_piter_dma_addr(&data_iter);
|
|
} else if (vsgt->num_regions == 1) {
|
|
mob->pt_level = SVGA3D_MOBFMT_RANGE;
|
|
mob->pt_root_page = vmw_piter_dma_addr(&data_iter);
|
|
} else if (unlikely(mob->pt_bo == NULL)) {
|
|
ret = vmw_mob_pt_populate(dev_priv, mob);
|
|
if (unlikely(ret != 0))
|
|
return ret;
|
|
|
|
vmw_mob_pt_setup(mob, data_iter, num_data_pages);
|
|
pt_set_up = true;
|
|
mob->pt_level += VMW_MOBFMT_PTDEPTH_1 - SVGA3D_MOBFMT_PTDEPTH_1;
|
|
}
|
|
|
|
vmw_fifo_resource_inc(dev_priv);
|
|
|
|
cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
|
|
if (unlikely(cmd == NULL)) {
|
|
DRM_ERROR("Failed reserving FIFO space for Memory "
|
|
"Object binding.\n");
|
|
goto out_no_cmd_space;
|
|
}
|
|
|
|
cmd->header.id = SVGA_3D_CMD_DEFINE_GB_MOB64;
|
|
cmd->header.size = sizeof(cmd->body);
|
|
cmd->body.mobid = mob_id;
|
|
cmd->body.ptDepth = mob->pt_level;
|
|
cmd->body.base = mob->pt_root_page >> PAGE_SHIFT;
|
|
cmd->body.sizeInBytes = num_data_pages * PAGE_SIZE;
|
|
|
|
vmw_fifo_commit(dev_priv, sizeof(*cmd));
|
|
|
|
return 0;
|
|
|
|
out_no_cmd_space:
|
|
vmw_fifo_resource_dec(dev_priv);
|
|
if (pt_set_up)
|
|
ttm_bo_unref(&mob->pt_bo);
|
|
|
|
return -ENOMEM;
|
|
}
|