Files
linux/drivers/gpu/drm/ttm/ttm_agp_backend.c
Linus Torvalds bf4afc53b7 Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
This was done entirely with mindless brute force, using

    git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' |
        xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/'

to convert the new alloc_obj() users that had a simple GFP_KERNEL
argument to just drop that argument.

Note that due to the extreme simplicity of the scripting, any slightly
more complex cases spread over multiple lines would not be triggered:
they definitely exist, but this covers the vast bulk of the cases, and
the resulting diff is also then easier to check automatically.

For the same reason the 'flex' versions will be done as a separate
conversion.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2026-02-21 17:09:51 -08:00

146 lines
3.9 KiB
C

/* 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_device.h>
#include <drm/ttm/ttm_tt.h>
#include <drm/ttm/ttm_resource.h>
#include <linux/agp_backend.h>
#include <linux/export.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;
};
int ttm_agp_bind(struct ttm_tt *ttm, struct ttm_resource *bo_mem)
{
struct ttm_agp_backend *agp_be = container_of(ttm, struct ttm_agp_backend, ttm);
struct page *dummy_read_page = ttm_glob.dummy_read_page;
struct agp_memory *mem;
int ret, cached = ttm->caching == ttm_cached;
unsigned i;
if (agp_be->mem)
return 0;
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, bo_mem->start);
if (ret)
pr_err("AGP Bind memory failed\n");
return ret;
}
EXPORT_SYMBOL(ttm_agp_bind);
void 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) {
agp_unbind_memory(agp_be->mem);
return;
}
agp_free_memory(agp_be->mem);
agp_be->mem = NULL;
}
}
EXPORT_SYMBOL(ttm_agp_unbind);
bool ttm_agp_is_bound(struct ttm_tt *ttm)
{
struct ttm_agp_backend *agp_be = container_of(ttm, struct ttm_agp_backend, ttm);
if (!ttm)
return false;
return (agp_be->mem != NULL);
}
EXPORT_SYMBOL(ttm_agp_is_bound);
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);
}
EXPORT_SYMBOL(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_obj(*agp_be);
if (!agp_be)
return NULL;
agp_be->mem = NULL;
agp_be->bridge = bridge;
if (ttm_tt_init(&agp_be->ttm, bo, page_flags, ttm_write_combined, 0)) {
kfree(agp_be);
return NULL;
}
return &agp_be->ttm;
}
EXPORT_SYMBOL(ttm_agp_tt_create);