Contributors: 12
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Thomas Hellstrom |
358 |
64.74% |
1 |
6.67% |
| Jérôme Glisse |
150 |
27.12% |
2 |
13.33% |
| Christian König |
12 |
2.17% |
3 |
20.00% |
| Joe Perches |
10 |
1.81% |
1 |
6.67% |
| Roger He |
7 |
1.27% |
1 |
6.67% |
| Masanari Iida |
5 |
0.90% |
1 |
6.67% |
| David Howells |
4 |
0.72% |
1 |
6.67% |
| Tejun Heo |
3 |
0.54% |
1 |
6.67% |
| Ben Skeggs |
1 |
0.18% |
1 |
6.67% |
| Dirk Hohndel |
1 |
0.18% |
1 |
6.67% |
| Dave Airlie |
1 |
0.18% |
1 |
6.67% |
| Konrad Rzeszutek Wilk |
1 |
0.18% |
1 |
6.67% |
| Total |
553 |
|
15 |
|
/* SPDX-License-Identifier: GPL-2.0 OR MIT */
/**************************************************************************
*
* Copyright (c) 2006-2009 VMware, Inc., Palo Alto, CA., USA
* All Rights Reserved.
*
* 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, sub license, 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 (including the
* next paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS 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: Thomas Hellstrom <thellstrom-at-vmware-dot-com>
* Keith Packard.
*/
#define pr_fmt(fmt) "[TTM] " fmt
#include <drm/ttm/ttm_module.h>
#include <drm/ttm/ttm_bo_driver.h>
#include <drm/ttm/ttm_page_alloc.h>
#include <drm/ttm/ttm_placement.h>
#include <linux/agp_backend.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/io.h>
#include <asm/agp.h>
struct ttm_agp_backend {
struct ttm_tt ttm;
struct agp_memory *mem;
struct agp_bridge_data *bridge;
};
static int ttm_agp_bind(struct ttm_tt *ttm, struct ttm_mem_reg *bo_mem)
{
struct ttm_agp_backend *agp_be = container_of(ttm, struct ttm_agp_backend, ttm);
struct page *dummy_read_page = ttm_bo_glob.dummy_read_page;
struct drm_mm_node *node = bo_mem->mm_node;
struct agp_memory *mem;
int ret, cached = (bo_mem->placement & TTM_PL_FLAG_CACHED);
unsigned i;
mem = agp_allocate_memory(agp_be->bridge, ttm->num_pages, AGP_USER_MEMORY);
if (unlikely(mem == NULL))
return -ENOMEM;
mem->page_count = 0;
for (i = 0; i < ttm->num_pages; i++) {
struct page *page = ttm->pages[i];
if (!page)
page = dummy_read_page;
mem->pages[mem->page_count++] = page;
}
agp_be->mem = mem;
mem->is_flushed = 1;
mem->type = (cached) ? AGP_USER_CACHED_MEMORY : AGP_USER_MEMORY;
ret = agp_bind_memory(mem, node->start);
if (ret)
pr_err("AGP Bind memory failed\n");
return ret;
}
static int ttm_agp_unbind(struct ttm_tt *ttm)
{
struct ttm_agp_backend *agp_be = container_of(ttm, struct ttm_agp_backend, ttm);
if (agp_be->mem) {
if (agp_be->mem->is_bound)
return agp_unbind_memory(agp_be->mem);
agp_free_memory(agp_be->mem);
agp_be->mem = NULL;
}
return 0;
}
static void ttm_agp_destroy(struct ttm_tt *ttm)
{
struct ttm_agp_backend *agp_be = container_of(ttm, struct ttm_agp_backend, ttm);
if (agp_be->mem)
ttm_agp_unbind(ttm);
ttm_tt_fini(ttm);
kfree(agp_be);
}
static struct ttm_backend_func ttm_agp_func = {
.bind = ttm_agp_bind,
.unbind = ttm_agp_unbind,
.destroy = ttm_agp_destroy,
};
struct ttm_tt *ttm_agp_tt_create(struct ttm_buffer_object *bo,
struct agp_bridge_data *bridge,
uint32_t page_flags)
{
struct ttm_agp_backend *agp_be;
agp_be = kmalloc(sizeof(*agp_be), GFP_KERNEL);
if (!agp_be)
return NULL;
agp_be->mem = NULL;
agp_be->bridge = bridge;
agp_be->ttm.func = &ttm_agp_func;
if (ttm_tt_init(&agp_be->ttm, bo, page_flags)) {
kfree(agp_be);
return NULL;
}
return &agp_be->ttm;
}
EXPORT_SYMBOL(ttm_agp_tt_create);
int ttm_agp_tt_populate(struct ttm_tt *ttm, struct ttm_operation_ctx *ctx)
{
if (ttm->state != tt_unpopulated)
return 0;
return ttm_pool_populate(ttm, ctx);
}
EXPORT_SYMBOL(ttm_agp_tt_populate);
void ttm_agp_tt_unpopulate(struct ttm_tt *ttm)
{
ttm_pool_unpopulate(ttm);
}
EXPORT_SYMBOL(ttm_agp_tt_unpopulate);