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/*
* Copyright 2013 Red Hat Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors: Dave Airlie
* Alon Levy
*/
#include <linux/delay.h>
#include <drm/drm.h>
#include <drm/drm_file.h>
#include <drm/drm_debugfs.h>
#include <drm/qxl_drm.h>
#include <drm/ttm/ttm_bo_api.h>
#include <drm/ttm/ttm_bo_driver.h>
#include <drm/ttm/ttm_placement.h>
#include <drm/ttm/ttm_range_manager.h>
#include "qxl_drv.h"
#include "qxl_object.h"
static struct qxl_device *qxl_get_qdev(struct ttm_device *bdev)
{
struct qxl_mman *mman;
struct qxl_device *qdev;
mman = container_of(bdev, struct qxl_mman, bdev);
qdev = container_of(mman, struct qxl_device, mman);
return qdev;
}
static void qxl_evict_flags(struct ttm_buffer_object *bo,
struct ttm_placement *placement)
{
struct qxl_bo *qbo;
static const struct ttm_place placements = {
.fpfn = 0,
.lpfn = 0,
.mem_type = TTM_PL_SYSTEM,
.flags = 0
};
if (!qxl_ttm_bo_is_qxl_bo(bo)) {
placement->placement = &placements;
placement->busy_placement = &placements;
placement->num_placement = 1;
placement->num_busy_placement = 1;
return;
}
qbo = to_qxl_bo(bo);
qxl_ttm_placement_from_domain(qbo, QXL_GEM_DOMAIN_CPU);
*placement = qbo->placement;
}
int qxl_ttm_io_mem_reserve(struct ttm_device *bdev,
struct ttm_resource *mem)
{
struct qxl_device *qdev = qxl_get_qdev(bdev);
switch (mem->mem_type) {
case TTM_PL_SYSTEM:
/* system memory */
return 0;
case TTM_PL_VRAM:
mem->bus.is_iomem = true;
mem->bus.offset = (mem->start << PAGE_SHIFT) + qdev->vram_base;
mem->bus.caching = ttm_write_combined;
break;
case TTM_PL_PRIV:
mem->bus.is_iomem = true;
mem->bus.offset = (mem->start << PAGE_SHIFT) +
qdev->surfaceram_base;
mem->bus.caching = ttm_write_combined;
break;
default:
return -EINVAL;
}
return 0;
}
/*
* TTM backend functions.
*/
static void qxl_ttm_backend_destroy(struct ttm_device *bdev, struct ttm_tt *ttm)
{
ttm_tt_fini(ttm);
kfree(ttm);
}
static struct ttm_tt *qxl_ttm_tt_create(struct ttm_buffer_object *bo,
uint32_t page_flags)
{
struct ttm_tt *ttm;
ttm = kzalloc(sizeof(struct ttm_tt), GFP_KERNEL);
if (ttm == NULL)
return NULL;
if (ttm_tt_init(ttm, bo, page_flags, ttm_cached, 0)) {
kfree(ttm);
return NULL;
}
return ttm;
}
static void qxl_bo_move_notify(struct ttm_buffer_object *bo,
struct ttm_resource *new_mem)
{
struct qxl_bo *qbo;
struct qxl_device *qdev;
if (!qxl_ttm_bo_is_qxl_bo(bo) || !bo->resource)
return;
qbo = to_qxl_bo(bo);
qdev = to_qxl(qbo->tbo.base.dev);
if (bo->resource->mem_type == TTM_PL_PRIV && qbo->surface_id)
qxl_surface_evict(qdev, qbo, new_mem ? true : false);
}
static int qxl_bo_move(struct ttm_buffer_object *bo, bool evict,
struct ttm_operation_ctx *ctx,
struct ttm_resource *new_mem,
struct ttm_place *hop)
{
struct ttm_resource *old_mem = bo->resource;
int ret;
qxl_bo_move_notify(bo, new_mem);
ret = ttm_bo_wait_ctx(bo, ctx);
if (ret)
return ret;
if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) {
ttm_bo_move_null(bo, new_mem);
return 0;
}
return ttm_bo_move_memcpy(bo, ctx, new_mem);
}
static void qxl_bo_delete_mem_notify(struct ttm_buffer_object *bo)
{
qxl_bo_move_notify(bo, NULL);
}
static struct ttm_device_funcs qxl_bo_driver = {
.ttm_tt_create = &qxl_ttm_tt_create,
.ttm_tt_destroy = &qxl_ttm_backend_destroy,
.eviction_valuable = ttm_bo_eviction_valuable,
.evict_flags = &qxl_evict_flags,
.move = &qxl_bo_move,
.io_mem_reserve = &qxl_ttm_io_mem_reserve,
.delete_mem_notify = &qxl_bo_delete_mem_notify,
};
static int qxl_ttm_init_mem_type(struct qxl_device *qdev,
unsigned int type,
uint64_t size)
{
return ttm_range_man_init(&qdev->mman.bdev, type, false, size);
}
int qxl_ttm_init(struct qxl_device *qdev)
{
int r;
int num_io_pages; /* != rom->num_io_pages, we include surface0 */
/* No others user of address space so set it to 0 */
r = ttm_device_init(&qdev->mman.bdev, &qxl_bo_driver, NULL,
qdev->ddev.anon_inode->i_mapping,
qdev->ddev.vma_offset_manager,
false, false);
if (r) {
DRM_ERROR("failed initializing buffer object driver(%d).\n", r);
return r;
}
/* NOTE: this includes the framebuffer (aka surface 0) */
num_io_pages = qdev->rom->ram_header_offset / PAGE_SIZE;
r = qxl_ttm_init_mem_type(qdev, TTM_PL_VRAM, num_io_pages);
if (r) {
DRM_ERROR("Failed initializing VRAM heap.\n");
return r;
}
r = qxl_ttm_init_mem_type(qdev, TTM_PL_PRIV,
qdev->surfaceram_size / PAGE_SIZE);
if (r) {
DRM_ERROR("Failed initializing Surfaces heap.\n");
return r;
}
DRM_INFO("qxl: %uM of VRAM memory size\n",
(unsigned int)qdev->vram_size / (1024 * 1024));
DRM_INFO("qxl: %luM of IO pages memory ready (VRAM domain)\n",
((unsigned int)num_io_pages * PAGE_SIZE) / (1024 * 1024));
DRM_INFO("qxl: %uM of Surface memory size\n",
(unsigned int)qdev->surfaceram_size / (1024 * 1024));
return 0;
}
void qxl_ttm_fini(struct qxl_device *qdev)
{
ttm_range_man_fini(&qdev->mman.bdev, TTM_PL_VRAM);
ttm_range_man_fini(&qdev->mman.bdev, TTM_PL_PRIV);
ttm_device_fini(&qdev->mman.bdev);
DRM_INFO("qxl: ttm finalized\n");
}
void qxl_ttm_debugfs_init(struct qxl_device *qdev)
{
#if defined(CONFIG_DEBUG_FS)
ttm_resource_manager_create_debugfs(ttm_manager_type(&qdev->mman.bdev,
TTM_PL_VRAM),
qdev->ddev.primary->debugfs_root, "qxl_mem_mm");
ttm_resource_manager_create_debugfs(ttm_manager_type(&qdev->mman.bdev,
TTM_PL_PRIV),
qdev->ddev.primary->debugfs_root, "qxl_surf_mm");
#endif
}
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