2009-06-10 13:20:19 +00:00
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/**************************************************************************
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*
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* Copyright (c) 2007-2009 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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/*
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* Authors: Thomas Hellstrom <thellstrom-at-vmware-dot-com>
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*/
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#include "ttm/ttm_bo_driver.h"
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#include "ttm/ttm_placement.h"
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#include <linux/io.h>
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#include <linux/highmem.h>
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#include <linux/wait.h>
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include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.
percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.
http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.
* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.
* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.
The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.
2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.
3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.
4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.
5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.
6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).
* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig
8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.
Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 08:04:11 +00:00
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#include <linux/slab.h>
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2009-06-10 13:20:19 +00:00
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#include <linux/vmalloc.h>
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#include <linux/module.h>
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void ttm_bo_free_old_node(struct ttm_buffer_object *bo)
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{
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2010-08-04 02:07:08 +00:00
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ttm_bo_mem_put(bo, &bo->mem);
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2009-06-10 13:20:19 +00:00
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}
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int ttm_bo_move_ttm(struct ttm_buffer_object *bo,
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2010-04-07 10:21:19 +00:00
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bool evict, bool no_wait_reserve,
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bool no_wait_gpu, struct ttm_mem_reg *new_mem)
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2009-06-10 13:20:19 +00:00
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{
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struct ttm_tt *ttm = bo->ttm;
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struct ttm_mem_reg *old_mem = &bo->mem;
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int ret;
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if (old_mem->mem_type != TTM_PL_SYSTEM) {
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ttm_tt_unbind(ttm);
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ttm_bo_free_old_node(bo);
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ttm_flag_masked(&old_mem->placement, TTM_PL_FLAG_SYSTEM,
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TTM_PL_MASK_MEM);
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old_mem->mem_type = TTM_PL_SYSTEM;
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}
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ret = ttm_tt_set_placement_caching(ttm, new_mem->placement);
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if (unlikely(ret != 0))
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return ret;
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if (new_mem->mem_type != TTM_PL_SYSTEM) {
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ret = ttm_tt_bind(ttm, new_mem);
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if (unlikely(ret != 0))
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return ret;
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}
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*old_mem = *new_mem;
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new_mem->mm_node = NULL;
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2010-01-21 05:45:40 +00:00
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2009-06-10 13:20:19 +00:00
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return 0;
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}
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EXPORT_SYMBOL(ttm_bo_move_ttm);
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2010-04-09 12:39:23 +00:00
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int ttm_mem_io_reserve(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem)
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{
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int ret;
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2010-04-07 10:21:27 +00:00
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if (!mem->bus.io_reserved) {
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mem->bus.io_reserved = true;
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ret = bdev->driver->io_mem_reserve(bdev, mem);
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2010-04-09 12:39:23 +00:00
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if (unlikely(ret != 0))
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return ret;
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}
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return 0;
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}
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void ttm_mem_io_free(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem)
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{
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if (bdev->driver->io_mem_reserve) {
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if (mem->bus.io_reserved) {
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mem->bus.io_reserved = false;
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bdev->driver->io_mem_free(bdev, mem);
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}
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}
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}
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2009-06-10 13:20:19 +00:00
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int ttm_mem_reg_ioremap(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem,
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void **virtual)
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{
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int ret;
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void *addr;
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*virtual = NULL;
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2010-04-09 12:39:23 +00:00
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ret = ttm_mem_io_reserve(bdev, mem);
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2010-05-05 09:02:44 +00:00
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if (ret || !mem->bus.is_iomem)
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2009-06-10 13:20:19 +00:00
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return ret;
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2010-04-09 12:39:23 +00:00
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if (mem->bus.addr) {
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addr = mem->bus.addr;
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} else {
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2009-06-10 13:20:19 +00:00
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if (mem->placement & TTM_PL_FLAG_WC)
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2010-04-09 12:39:23 +00:00
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addr = ioremap_wc(mem->bus.base + mem->bus.offset, mem->bus.size);
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2009-06-10 13:20:19 +00:00
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else
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2010-04-09 12:39:23 +00:00
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addr = ioremap_nocache(mem->bus.base + mem->bus.offset, mem->bus.size);
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if (!addr) {
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ttm_mem_io_free(bdev, mem);
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2009-06-10 13:20:19 +00:00
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return -ENOMEM;
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2010-04-09 12:39:23 +00:00
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}
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2009-06-10 13:20:19 +00:00
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}
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*virtual = addr;
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return 0;
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}
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void ttm_mem_reg_iounmap(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem,
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void *virtual)
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{
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struct ttm_mem_type_manager *man;
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man = &bdev->man[mem->mem_type];
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2010-04-07 10:21:27 +00:00
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if (virtual && mem->bus.addr == NULL)
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2009-06-10 13:20:19 +00:00
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iounmap(virtual);
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2010-04-09 12:39:23 +00:00
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ttm_mem_io_free(bdev, mem);
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2009-06-10 13:20:19 +00:00
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}
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static int ttm_copy_io_page(void *dst, void *src, unsigned long page)
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{
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uint32_t *dstP =
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(uint32_t *) ((unsigned long)dst + (page << PAGE_SHIFT));
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uint32_t *srcP =
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(uint32_t *) ((unsigned long)src + (page << PAGE_SHIFT));
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int i;
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for (i = 0; i < PAGE_SIZE / sizeof(uint32_t); ++i)
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iowrite32(ioread32(srcP++), dstP++);
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return 0;
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}
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static int ttm_copy_io_ttm_page(struct ttm_tt *ttm, void *src,
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2009-07-24 07:57:34 +00:00
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unsigned long page,
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pgprot_t prot)
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2009-06-10 13:20:19 +00:00
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{
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struct page *d = ttm_tt_get_page(ttm, page);
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void *dst;
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if (!d)
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return -ENOMEM;
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src = (void *)((unsigned long)src + (page << PAGE_SHIFT));
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2009-07-24 07:57:34 +00:00
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#ifdef CONFIG_X86
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dst = kmap_atomic_prot(d, KM_USER0, prot);
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#else
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2009-07-31 08:47:51 +00:00
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if (pgprot_val(prot) != pgprot_val(PAGE_KERNEL))
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2009-07-24 07:57:34 +00:00
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dst = vmap(&d, 1, 0, prot);
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else
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dst = kmap(d);
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#endif
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2009-06-10 13:20:19 +00:00
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if (!dst)
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return -ENOMEM;
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memcpy_fromio(dst, src, PAGE_SIZE);
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2009-07-24 07:57:34 +00:00
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#ifdef CONFIG_X86
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kunmap_atomic(dst, KM_USER0);
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#else
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2009-07-31 08:47:51 +00:00
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if (pgprot_val(prot) != pgprot_val(PAGE_KERNEL))
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2009-07-24 07:57:34 +00:00
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vunmap(dst);
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else
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kunmap(d);
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#endif
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2009-06-10 13:20:19 +00:00
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return 0;
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}
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static int ttm_copy_ttm_io_page(struct ttm_tt *ttm, void *dst,
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2009-07-24 07:57:34 +00:00
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unsigned long page,
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pgprot_t prot)
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2009-06-10 13:20:19 +00:00
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{
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struct page *s = ttm_tt_get_page(ttm, page);
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void *src;
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if (!s)
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return -ENOMEM;
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dst = (void *)((unsigned long)dst + (page << PAGE_SHIFT));
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2009-07-24 07:57:34 +00:00
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#ifdef CONFIG_X86
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src = kmap_atomic_prot(s, KM_USER0, prot);
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#else
|
2009-07-31 08:47:51 +00:00
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if (pgprot_val(prot) != pgprot_val(PAGE_KERNEL))
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2009-07-24 07:57:34 +00:00
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src = vmap(&s, 1, 0, prot);
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else
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src = kmap(s);
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#endif
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2009-06-10 13:20:19 +00:00
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if (!src)
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return -ENOMEM;
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memcpy_toio(dst, src, PAGE_SIZE);
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2009-07-24 07:57:34 +00:00
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#ifdef CONFIG_X86
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kunmap_atomic(src, KM_USER0);
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#else
|
2009-07-31 08:47:51 +00:00
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if (pgprot_val(prot) != pgprot_val(PAGE_KERNEL))
|
2009-07-24 07:57:34 +00:00
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vunmap(src);
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else
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kunmap(s);
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#endif
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|
2009-06-10 13:20:19 +00:00
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return 0;
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}
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int ttm_bo_move_memcpy(struct ttm_buffer_object *bo,
|
2010-04-07 10:21:19 +00:00
|
|
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bool evict, bool no_wait_reserve, bool no_wait_gpu,
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struct ttm_mem_reg *new_mem)
|
2009-06-10 13:20:19 +00:00
|
|
|
{
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|
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struct ttm_bo_device *bdev = bo->bdev;
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struct ttm_mem_type_manager *man = &bdev->man[new_mem->mem_type];
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struct ttm_tt *ttm = bo->ttm;
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struct ttm_mem_reg *old_mem = &bo->mem;
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struct ttm_mem_reg old_copy = *old_mem;
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void *old_iomap;
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void *new_iomap;
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int ret;
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|
|
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unsigned long i;
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|
|
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unsigned long page;
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|
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unsigned long add = 0;
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|
|
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int dir;
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|
|
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|
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|
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ret = ttm_mem_reg_ioremap(bdev, old_mem, &old_iomap);
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|
|
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if (ret)
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|
return ret;
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|
|
|
ret = ttm_mem_reg_ioremap(bdev, new_mem, &new_iomap);
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|
|
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if (ret)
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goto out;
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|
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|
|
if (old_iomap == NULL && new_iomap == NULL)
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goto out2;
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if (old_iomap == NULL && ttm == NULL)
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goto out2;
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add = 0;
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dir = 1;
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|
|
if ((old_mem->mem_type == new_mem->mem_type) &&
|
|
|
|
(new_mem->mm_node->start <
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|
|
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old_mem->mm_node->start + old_mem->mm_node->size)) {
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dir = -1;
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add = new_mem->num_pages - 1;
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|
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}
|
|
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|
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for (i = 0; i < new_mem->num_pages; ++i) {
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|
|
page = i * dir + add;
|
2009-07-24 07:57:34 +00:00
|
|
|
if (old_iomap == NULL) {
|
|
|
|
pgprot_t prot = ttm_io_prot(old_mem->placement,
|
|
|
|
PAGE_KERNEL);
|
|
|
|
ret = ttm_copy_ttm_io_page(ttm, new_iomap, page,
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|
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prot);
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|
|
|
} else if (new_iomap == NULL) {
|
|
|
|
pgprot_t prot = ttm_io_prot(new_mem->placement,
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|
|
|
PAGE_KERNEL);
|
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|
|
ret = ttm_copy_io_ttm_page(ttm, old_iomap, page,
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|
|
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prot);
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|
|
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} else
|
2009-06-10 13:20:19 +00:00
|
|
|
ret = ttm_copy_io_page(new_iomap, old_iomap, page);
|
|
|
|
if (ret)
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|
goto out1;
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|
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|
}
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|
|
|
mb();
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|
out2:
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|
|
ttm_bo_free_old_node(bo);
|
|
|
|
|
|
|
|
*old_mem = *new_mem;
|
|
|
|
new_mem->mm_node = NULL;
|
|
|
|
|
|
|
|
if ((man->flags & TTM_MEMTYPE_FLAG_FIXED) && (ttm != NULL)) {
|
|
|
|
ttm_tt_unbind(ttm);
|
|
|
|
ttm_tt_destroy(ttm);
|
|
|
|
bo->ttm = NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
out1:
|
|
|
|
ttm_mem_reg_iounmap(bdev, new_mem, new_iomap);
|
|
|
|
out:
|
|
|
|
ttm_mem_reg_iounmap(bdev, &old_copy, old_iomap);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(ttm_bo_move_memcpy);
|
|
|
|
|
|
|
|
static void ttm_transfered_destroy(struct ttm_buffer_object *bo)
|
|
|
|
{
|
|
|
|
kfree(bo);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ttm_buffer_object_transfer
|
|
|
|
*
|
|
|
|
* @bo: A pointer to a struct ttm_buffer_object.
|
|
|
|
* @new_obj: A pointer to a pointer to a newly created ttm_buffer_object,
|
|
|
|
* holding the data of @bo with the old placement.
|
|
|
|
*
|
|
|
|
* This is a utility function that may be called after an accelerated move
|
|
|
|
* has been scheduled. A new buffer object is created as a placeholder for
|
|
|
|
* the old data while it's being copied. When that buffer object is idle,
|
|
|
|
* it can be destroyed, releasing the space of the old placement.
|
|
|
|
* Returns:
|
|
|
|
* !0: Failure.
|
|
|
|
*/
|
|
|
|
|
|
|
|
static int ttm_buffer_object_transfer(struct ttm_buffer_object *bo,
|
|
|
|
struct ttm_buffer_object **new_obj)
|
|
|
|
{
|
|
|
|
struct ttm_buffer_object *fbo;
|
|
|
|
struct ttm_bo_device *bdev = bo->bdev;
|
|
|
|
struct ttm_bo_driver *driver = bdev->driver;
|
|
|
|
|
|
|
|
fbo = kzalloc(sizeof(*fbo), GFP_KERNEL);
|
|
|
|
if (!fbo)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
*fbo = *bo;
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Fix up members that we shouldn't copy directly:
|
|
|
|
* TODO: Explicit member copy would probably be better here.
|
|
|
|
*/
|
|
|
|
|
|
|
|
spin_lock_init(&fbo->lock);
|
|
|
|
init_waitqueue_head(&fbo->event_queue);
|
|
|
|
INIT_LIST_HEAD(&fbo->ddestroy);
|
|
|
|
INIT_LIST_HEAD(&fbo->lru);
|
|
|
|
INIT_LIST_HEAD(&fbo->swap);
|
|
|
|
fbo->vm_node = NULL;
|
|
|
|
|
|
|
|
fbo->sync_obj = driver->sync_obj_ref(bo->sync_obj);
|
|
|
|
kref_init(&fbo->list_kref);
|
|
|
|
kref_init(&fbo->kref);
|
|
|
|
fbo->destroy = &ttm_transfered_destroy;
|
|
|
|
|
|
|
|
*new_obj = fbo;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
pgprot_t ttm_io_prot(uint32_t caching_flags, pgprot_t tmp)
|
|
|
|
{
|
|
|
|
#if defined(__i386__) || defined(__x86_64__)
|
|
|
|
if (caching_flags & TTM_PL_FLAG_WC)
|
|
|
|
tmp = pgprot_writecombine(tmp);
|
|
|
|
else if (boot_cpu_data.x86 > 3)
|
|
|
|
tmp = pgprot_noncached(tmp);
|
|
|
|
|
|
|
|
#elif defined(__powerpc__)
|
|
|
|
if (!(caching_flags & TTM_PL_FLAG_CACHED)) {
|
|
|
|
pgprot_val(tmp) |= _PAGE_NO_CACHE;
|
|
|
|
if (caching_flags & TTM_PL_FLAG_UNCACHED)
|
|
|
|
pgprot_val(tmp) |= _PAGE_GUARDED;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
#if defined(__ia64__)
|
|
|
|
if (caching_flags & TTM_PL_FLAG_WC)
|
|
|
|
tmp = pgprot_writecombine(tmp);
|
|
|
|
else
|
|
|
|
tmp = pgprot_noncached(tmp);
|
|
|
|
#endif
|
|
|
|
#if defined(__sparc__)
|
|
|
|
if (!(caching_flags & TTM_PL_FLAG_CACHED))
|
|
|
|
tmp = pgprot_noncached(tmp);
|
|
|
|
#endif
|
|
|
|
return tmp;
|
|
|
|
}
|
2009-12-06 20:46:27 +00:00
|
|
|
EXPORT_SYMBOL(ttm_io_prot);
|
2009-06-10 13:20:19 +00:00
|
|
|
|
|
|
|
static int ttm_bo_ioremap(struct ttm_buffer_object *bo,
|
2010-04-09 12:39:23 +00:00
|
|
|
unsigned long offset,
|
|
|
|
unsigned long size,
|
2009-06-10 13:20:19 +00:00
|
|
|
struct ttm_bo_kmap_obj *map)
|
|
|
|
{
|
|
|
|
struct ttm_mem_reg *mem = &bo->mem;
|
|
|
|
|
2010-04-09 12:39:23 +00:00
|
|
|
if (bo->mem.bus.addr) {
|
2009-06-10 13:20:19 +00:00
|
|
|
map->bo_kmap_type = ttm_bo_map_premapped;
|
2010-04-09 12:39:23 +00:00
|
|
|
map->virtual = (void *)(((u8 *)bo->mem.bus.addr) + offset);
|
2009-06-10 13:20:19 +00:00
|
|
|
} else {
|
|
|
|
map->bo_kmap_type = ttm_bo_map_iomap;
|
|
|
|
if (mem->placement & TTM_PL_FLAG_WC)
|
2010-04-09 12:39:23 +00:00
|
|
|
map->virtual = ioremap_wc(bo->mem.bus.base + bo->mem.bus.offset + offset,
|
|
|
|
size);
|
2009-06-10 13:20:19 +00:00
|
|
|
else
|
2010-04-09 12:39:23 +00:00
|
|
|
map->virtual = ioremap_nocache(bo->mem.bus.base + bo->mem.bus.offset + offset,
|
|
|
|
size);
|
2009-06-10 13:20:19 +00:00
|
|
|
}
|
|
|
|
return (!map->virtual) ? -ENOMEM : 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int ttm_bo_kmap_ttm(struct ttm_buffer_object *bo,
|
|
|
|
unsigned long start_page,
|
|
|
|
unsigned long num_pages,
|
|
|
|
struct ttm_bo_kmap_obj *map)
|
|
|
|
{
|
|
|
|
struct ttm_mem_reg *mem = &bo->mem; pgprot_t prot;
|
|
|
|
struct ttm_tt *ttm = bo->ttm;
|
|
|
|
struct page *d;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
BUG_ON(!ttm);
|
|
|
|
if (num_pages == 1 && (mem->placement & TTM_PL_FLAG_CACHED)) {
|
|
|
|
/*
|
|
|
|
* We're mapping a single page, and the desired
|
|
|
|
* page protection is consistent with the bo.
|
|
|
|
*/
|
|
|
|
|
|
|
|
map->bo_kmap_type = ttm_bo_map_kmap;
|
|
|
|
map->page = ttm_tt_get_page(ttm, start_page);
|
|
|
|
map->virtual = kmap(map->page);
|
|
|
|
} else {
|
|
|
|
/*
|
|
|
|
* Populate the part we're mapping;
|
|
|
|
*/
|
|
|
|
for (i = start_page; i < start_page + num_pages; ++i) {
|
|
|
|
d = ttm_tt_get_page(ttm, i);
|
|
|
|
if (!d)
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* We need to use vmap to get the desired page protection
|
tree-wide: fix assorted typos all over the place
That is "success", "unknown", "through", "performance", "[re|un]mapping"
, "access", "default", "reasonable", "[con]currently", "temperature"
, "channel", "[un]used", "application", "example","hierarchy", "therefore"
, "[over|under]flow", "contiguous", "threshold", "enough" and others.
Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-11-14 15:09:05 +00:00
|
|
|
* or to make the buffer object look contiguous.
|
2009-06-10 13:20:19 +00:00
|
|
|
*/
|
|
|
|
prot = (mem->placement & TTM_PL_FLAG_CACHED) ?
|
|
|
|
PAGE_KERNEL :
|
|
|
|
ttm_io_prot(mem->placement, PAGE_KERNEL);
|
|
|
|
map->bo_kmap_type = ttm_bo_map_vmap;
|
|
|
|
map->virtual = vmap(ttm->pages + start_page, num_pages,
|
|
|
|
0, prot);
|
|
|
|
}
|
|
|
|
return (!map->virtual) ? -ENOMEM : 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
int ttm_bo_kmap(struct ttm_buffer_object *bo,
|
|
|
|
unsigned long start_page, unsigned long num_pages,
|
|
|
|
struct ttm_bo_kmap_obj *map)
|
|
|
|
{
|
2010-04-09 12:39:23 +00:00
|
|
|
unsigned long offset, size;
|
2009-06-10 13:20:19 +00:00
|
|
|
int ret;
|
|
|
|
|
|
|
|
BUG_ON(!list_empty(&bo->swap));
|
|
|
|
map->virtual = NULL;
|
2010-04-09 12:39:23 +00:00
|
|
|
map->bo = bo;
|
2009-06-10 13:20:19 +00:00
|
|
|
if (num_pages > bo->num_pages)
|
|
|
|
return -EINVAL;
|
|
|
|
if (start_page > bo->num_pages)
|
|
|
|
return -EINVAL;
|
|
|
|
#if 0
|
|
|
|
if (num_pages > 1 && !DRM_SUSER(DRM_CURPROC))
|
|
|
|
return -EPERM;
|
|
|
|
#endif
|
2010-04-09 12:39:23 +00:00
|
|
|
ret = ttm_mem_io_reserve(bo->bdev, &bo->mem);
|
2009-06-10 13:20:19 +00:00
|
|
|
if (ret)
|
|
|
|
return ret;
|
2010-04-09 12:39:23 +00:00
|
|
|
if (!bo->mem.bus.is_iomem) {
|
2009-06-10 13:20:19 +00:00
|
|
|
return ttm_bo_kmap_ttm(bo, start_page, num_pages, map);
|
|
|
|
} else {
|
2010-04-09 12:39:23 +00:00
|
|
|
offset = start_page << PAGE_SHIFT;
|
|
|
|
size = num_pages << PAGE_SHIFT;
|
|
|
|
return ttm_bo_ioremap(bo, offset, size, map);
|
2009-06-10 13:20:19 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(ttm_bo_kmap);
|
|
|
|
|
|
|
|
void ttm_bo_kunmap(struct ttm_bo_kmap_obj *map)
|
|
|
|
{
|
|
|
|
if (!map->virtual)
|
|
|
|
return;
|
|
|
|
switch (map->bo_kmap_type) {
|
|
|
|
case ttm_bo_map_iomap:
|
|
|
|
iounmap(map->virtual);
|
2010-04-09 12:39:23 +00:00
|
|
|
ttm_mem_io_free(map->bo->bdev, &map->bo->mem);
|
2009-06-10 13:20:19 +00:00
|
|
|
break;
|
|
|
|
case ttm_bo_map_vmap:
|
|
|
|
vunmap(map->virtual);
|
|
|
|
break;
|
|
|
|
case ttm_bo_map_kmap:
|
|
|
|
kunmap(map->page);
|
|
|
|
break;
|
|
|
|
case ttm_bo_map_premapped:
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
BUG();
|
|
|
|
}
|
|
|
|
map->virtual = NULL;
|
|
|
|
map->page = NULL;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(ttm_bo_kunmap);
|
|
|
|
|
|
|
|
int ttm_bo_move_accel_cleanup(struct ttm_buffer_object *bo,
|
|
|
|
void *sync_obj,
|
|
|
|
void *sync_obj_arg,
|
2010-04-07 10:21:19 +00:00
|
|
|
bool evict, bool no_wait_reserve,
|
|
|
|
bool no_wait_gpu,
|
2009-06-10 13:20:19 +00:00
|
|
|
struct ttm_mem_reg *new_mem)
|
|
|
|
{
|
|
|
|
struct ttm_bo_device *bdev = bo->bdev;
|
|
|
|
struct ttm_bo_driver *driver = bdev->driver;
|
|
|
|
struct ttm_mem_type_manager *man = &bdev->man[new_mem->mem_type];
|
|
|
|
struct ttm_mem_reg *old_mem = &bo->mem;
|
|
|
|
int ret;
|
|
|
|
struct ttm_buffer_object *ghost_obj;
|
|
|
|
void *tmp_obj = NULL;
|
|
|
|
|
|
|
|
spin_lock(&bo->lock);
|
|
|
|
if (bo->sync_obj) {
|
|
|
|
tmp_obj = bo->sync_obj;
|
|
|
|
bo->sync_obj = NULL;
|
|
|
|
}
|
|
|
|
bo->sync_obj = driver->sync_obj_ref(sync_obj);
|
|
|
|
bo->sync_obj_arg = sync_obj_arg;
|
|
|
|
if (evict) {
|
|
|
|
ret = ttm_bo_wait(bo, false, false, false);
|
|
|
|
spin_unlock(&bo->lock);
|
2009-07-21 15:45:13 +00:00
|
|
|
if (tmp_obj)
|
|
|
|
driver->sync_obj_unref(&tmp_obj);
|
2009-06-10 13:20:19 +00:00
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
ttm_bo_free_old_node(bo);
|
|
|
|
if ((man->flags & TTM_MEMTYPE_FLAG_FIXED) &&
|
|
|
|
(bo->ttm != NULL)) {
|
|
|
|
ttm_tt_unbind(bo->ttm);
|
|
|
|
ttm_tt_destroy(bo->ttm);
|
|
|
|
bo->ttm = NULL;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
/**
|
|
|
|
* This should help pipeline ordinary buffer moves.
|
|
|
|
*
|
|
|
|
* Hang old buffer memory on a new buffer object,
|
|
|
|
* and leave it to be released when the GPU
|
|
|
|
* operation has completed.
|
|
|
|
*/
|
|
|
|
|
|
|
|
set_bit(TTM_BO_PRIV_FLAG_MOVING, &bo->priv_flags);
|
|
|
|
spin_unlock(&bo->lock);
|
2009-07-21 15:45:13 +00:00
|
|
|
if (tmp_obj)
|
|
|
|
driver->sync_obj_unref(&tmp_obj);
|
2009-06-10 13:20:19 +00:00
|
|
|
|
|
|
|
ret = ttm_buffer_object_transfer(bo, &ghost_obj);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
/**
|
|
|
|
* If we're not moving to fixed memory, the TTM object
|
|
|
|
* needs to stay alive. Otherwhise hang it on the ghost
|
|
|
|
* bo to be unbound and destroyed.
|
|
|
|
*/
|
|
|
|
|
|
|
|
if (!(man->flags & TTM_MEMTYPE_FLAG_FIXED))
|
|
|
|
ghost_obj->ttm = NULL;
|
|
|
|
else
|
|
|
|
bo->ttm = NULL;
|
|
|
|
|
|
|
|
ttm_bo_unreserve(ghost_obj);
|
|
|
|
ttm_bo_unref(&ghost_obj);
|
|
|
|
}
|
|
|
|
|
|
|
|
*old_mem = *new_mem;
|
|
|
|
new_mem->mm_node = NULL;
|
2010-01-21 05:45:40 +00:00
|
|
|
|
2009-06-10 13:20:19 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(ttm_bo_move_accel_cleanup);
|