331 lines
8.7 KiB
C
331 lines
8.7 KiB
C
/*
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* Copyright 2013 Red Hat Inc.
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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 "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions 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 NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: Dave Airlie
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* Alon Levy
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*/
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#include <linux/delay.h>
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#include <drm/drm.h>
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#include <drm/drm_file.h>
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#include <drm/drm_debugfs.h>
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#include <drm/qxl_drm.h>
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#include <drm/ttm/ttm_bo_api.h>
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#include <drm/ttm/ttm_bo_driver.h>
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#include <drm/ttm/ttm_module.h>
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#include <drm/ttm/ttm_page_alloc.h>
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#include <drm/ttm/ttm_placement.h>
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#include "qxl_drv.h"
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#include "qxl_object.h"
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static struct qxl_device *qxl_get_qdev(struct ttm_bo_device *bdev)
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{
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struct qxl_mman *mman;
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struct qxl_device *qdev;
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mman = container_of(bdev, struct qxl_mman, bdev);
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qdev = container_of(mman, struct qxl_device, mman);
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return qdev;
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}
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static int qxl_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 = 0;
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man->available_caching = TTM_PL_MASK_CACHING;
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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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case TTM_PL_PRIV:
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/* "On-card" video ram */
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man->func = &ttm_bo_manager_func;
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man->flags = TTM_MEMTYPE_FLAG_FIXED;
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man->available_caching = TTM_PL_MASK_CACHING;
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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 int)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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static void qxl_evict_flags(struct ttm_buffer_object *bo,
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struct ttm_placement *placement)
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{
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struct qxl_bo *qbo;
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static const struct ttm_place placements = {
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.fpfn = 0,
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.lpfn = 0,
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.flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM
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};
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if (!qxl_ttm_bo_is_qxl_bo(bo)) {
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placement->placement = &placements;
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placement->busy_placement = &placements;
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placement->num_placement = 1;
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placement->num_busy_placement = 1;
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return;
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}
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qbo = to_qxl_bo(bo);
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qxl_ttm_placement_from_domain(qbo, QXL_GEM_DOMAIN_CPU, false);
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*placement = qbo->placement;
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}
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int qxl_ttm_io_mem_reserve(struct ttm_bo_device *bdev,
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struct ttm_mem_reg *mem)
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{
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struct qxl_device *qdev = qxl_get_qdev(bdev);
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mem->bus.addr = NULL;
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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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mem->bus.is_iomem = false;
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switch (mem->mem_type) {
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case TTM_PL_SYSTEM:
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/* system memory */
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return 0;
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case TTM_PL_VRAM:
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mem->bus.is_iomem = true;
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mem->bus.base = qdev->vram_base;
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mem->bus.offset = mem->start << PAGE_SHIFT;
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break;
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case TTM_PL_PRIV:
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mem->bus.is_iomem = true;
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mem->bus.base = qdev->surfaceram_base;
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mem->bus.offset = mem->start << PAGE_SHIFT;
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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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/*
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* TTM backend functions.
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*/
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struct qxl_ttm_tt {
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struct ttm_tt ttm;
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struct qxl_device *qdev;
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u64 offset;
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};
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static int qxl_ttm_backend_bind(struct ttm_tt *ttm,
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struct ttm_mem_reg *bo_mem)
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{
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struct qxl_ttm_tt *gtt = (void *)ttm;
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gtt->offset = (unsigned long)(bo_mem->start << PAGE_SHIFT);
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if (!ttm->num_pages) {
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WARN(1, "nothing to bind %lu pages for mreg %p back %p!\n",
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ttm->num_pages, bo_mem, ttm);
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}
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/* Not implemented */
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return -1;
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}
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static int qxl_ttm_backend_unbind(struct ttm_tt *ttm)
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{
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/* Not implemented */
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return -1;
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}
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static void qxl_ttm_backend_destroy(struct ttm_tt *ttm)
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{
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struct qxl_ttm_tt *gtt = (void *)ttm;
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ttm_tt_fini(>t->ttm);
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kfree(gtt);
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}
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static struct ttm_backend_func qxl_backend_func = {
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.bind = &qxl_ttm_backend_bind,
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.unbind = &qxl_ttm_backend_unbind,
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.destroy = &qxl_ttm_backend_destroy,
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};
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static struct ttm_tt *qxl_ttm_tt_create(struct ttm_buffer_object *bo,
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uint32_t page_flags)
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{
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struct qxl_device *qdev;
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struct qxl_ttm_tt *gtt;
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qdev = qxl_get_qdev(bo->bdev);
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gtt = kzalloc(sizeof(struct qxl_ttm_tt), GFP_KERNEL);
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if (gtt == NULL)
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return NULL;
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gtt->ttm.func = &qxl_backend_func;
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gtt->qdev = qdev;
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if (ttm_tt_init(>t->ttm, bo, page_flags)) {
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kfree(gtt);
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return NULL;
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}
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return >t->ttm;
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}
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static void qxl_move_null(struct ttm_buffer_object *bo,
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struct ttm_mem_reg *new_mem)
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{
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struct ttm_mem_reg *old_mem = &bo->mem;
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BUG_ON(old_mem->mm_node != NULL);
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*old_mem = *new_mem;
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new_mem->mm_node = NULL;
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}
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static int qxl_bo_move(struct ttm_buffer_object *bo, bool evict,
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struct ttm_operation_ctx *ctx,
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struct ttm_mem_reg *new_mem)
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{
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struct ttm_mem_reg *old_mem = &bo->mem;
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int ret;
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ret = ttm_bo_wait(bo, ctx->interruptible, ctx->no_wait_gpu);
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if (ret)
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return ret;
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if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) {
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qxl_move_null(bo, new_mem);
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return 0;
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}
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return ttm_bo_move_memcpy(bo, ctx, new_mem);
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}
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static void qxl_bo_move_notify(struct ttm_buffer_object *bo,
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bool evict,
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struct ttm_mem_reg *new_mem)
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{
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struct qxl_bo *qbo;
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struct qxl_device *qdev;
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if (!qxl_ttm_bo_is_qxl_bo(bo))
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return;
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qbo = to_qxl_bo(bo);
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qdev = to_qxl(qbo->tbo.base.dev);
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if (bo->mem.mem_type == TTM_PL_PRIV && qbo->surface_id)
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qxl_surface_evict(qdev, qbo, new_mem ? true : false);
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}
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static struct ttm_bo_driver qxl_bo_driver = {
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.ttm_tt_create = &qxl_ttm_tt_create,
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.init_mem_type = &qxl_init_mem_type,
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.eviction_valuable = ttm_bo_eviction_valuable,
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.evict_flags = &qxl_evict_flags,
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.move = &qxl_bo_move,
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.io_mem_reserve = &qxl_ttm_io_mem_reserve,
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.move_notify = &qxl_bo_move_notify,
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};
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int qxl_ttm_init(struct qxl_device *qdev)
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{
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int r;
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int num_io_pages; /* != rom->num_io_pages, we include surface0 */
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/* No others user of address space so set it to 0 */
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r = ttm_bo_device_init(&qdev->mman.bdev,
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&qxl_bo_driver,
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qdev->ddev.anon_inode->i_mapping,
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qdev->ddev.vma_offset_manager,
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false);
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if (r) {
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DRM_ERROR("failed initializing buffer object driver(%d).\n", r);
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return r;
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}
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/* NOTE: this includes the framebuffer (aka surface 0) */
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num_io_pages = qdev->rom->ram_header_offset / PAGE_SIZE;
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r = ttm_bo_init_mm(&qdev->mman.bdev, TTM_PL_VRAM,
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num_io_pages);
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if (r) {
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DRM_ERROR("Failed initializing VRAM heap.\n");
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return r;
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}
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r = ttm_bo_init_mm(&qdev->mman.bdev, TTM_PL_PRIV,
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qdev->surfaceram_size / PAGE_SIZE);
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if (r) {
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DRM_ERROR("Failed initializing Surfaces heap.\n");
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return r;
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}
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DRM_INFO("qxl: %uM of VRAM memory size\n",
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(unsigned int)qdev->vram_size / (1024 * 1024));
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DRM_INFO("qxl: %luM of IO pages memory ready (VRAM domain)\n",
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((unsigned int)num_io_pages * PAGE_SIZE) / (1024 * 1024));
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DRM_INFO("qxl: %uM of Surface memory size\n",
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(unsigned int)qdev->surfaceram_size / (1024 * 1024));
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return 0;
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}
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void qxl_ttm_fini(struct qxl_device *qdev)
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{
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ttm_bo_clean_mm(&qdev->mman.bdev, TTM_PL_VRAM);
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ttm_bo_clean_mm(&qdev->mman.bdev, TTM_PL_PRIV);
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ttm_bo_device_release(&qdev->mman.bdev);
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DRM_INFO("qxl: ttm finalized\n");
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}
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#define QXL_DEBUGFS_MEM_TYPES 2
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#if defined(CONFIG_DEBUG_FS)
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static int qxl_mm_dump_table(struct seq_file *m, void *data)
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{
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struct drm_info_node *node = (struct drm_info_node *)m->private;
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struct drm_mm *mm = (struct drm_mm *)node->info_ent->data;
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struct drm_printer p = drm_seq_file_printer(m);
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spin_lock(&ttm_bo_glob.lru_lock);
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drm_mm_print(mm, &p);
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spin_unlock(&ttm_bo_glob.lru_lock);
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return 0;
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}
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#endif
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void qxl_ttm_debugfs_init(struct qxl_device *qdev)
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{
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#if defined(CONFIG_DEBUG_FS)
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static struct drm_info_list qxl_mem_types_list[QXL_DEBUGFS_MEM_TYPES];
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static char qxl_mem_types_names[QXL_DEBUGFS_MEM_TYPES][32];
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unsigned int i;
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for (i = 0; i < QXL_DEBUGFS_MEM_TYPES; i++) {
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if (i == 0)
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sprintf(qxl_mem_types_names[i], "qxl_mem_mm");
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else
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sprintf(qxl_mem_types_names[i], "qxl_surf_mm");
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qxl_mem_types_list[i].name = qxl_mem_types_names[i];
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qxl_mem_types_list[i].show = &qxl_mm_dump_table;
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qxl_mem_types_list[i].driver_features = 0;
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if (i == 0)
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qxl_mem_types_list[i].data = qdev->mman.bdev.man[TTM_PL_VRAM].priv;
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else
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qxl_mem_types_list[i].data = qdev->mman.bdev.man[TTM_PL_PRIV].priv;
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}
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qxl_debugfs_add_files(qdev, qxl_mem_types_list, i);
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#endif
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}
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