diff options
| -rw-r--r-- | drivers/gpu/drm/drm_cache.c | 51 | ||||
| -rw-r--r-- | drivers/gpu/drm/ttm/ttm_tt.c | 67 | ||||
| -rw-r--r-- | include/drm/drm_cache.h | 38 |
3 files changed, 82 insertions, 74 deletions
diff --git a/drivers/gpu/drm/drm_cache.c b/drivers/gpu/drm/drm_cache.c index 0e994a0..3a5575e 100644 --- a/drivers/gpu/drm/drm_cache.c +++ b/drivers/gpu/drm/drm_cache.c @@ -45,25 +45,58 @@ drm_clflush_page(struct page *page) clflush(page_virtual + i); kunmap_atomic(page_virtual, KM_USER0); } -#endif +static void drm_cache_flush_clflush(struct page *pages[], + unsigned long num_pages) +{ + unsigned long i; + + mb(); + for (i = 0; i < num_pages; i++) + drm_clflush_page(*pages++); + mb(); +} + +static void +drm_clflush_ipi_handler(void *null) +{ + wbinvd(); +} +#elif !defined(__powerpc__) +static void drm_cache_ipi_handler(void *dummy) +{ +} +#endif void drm_clflush_pages(struct page *pages[], unsigned long num_pages) { #if defined(CONFIG_X86) if (cpu_has_clflush) { - unsigned long i; - - mb(); - for (i = 0; i < num_pages; ++i) - drm_clflush_page(*pages++); - mb(); - + drm_cache_flush_clflush(pages, num_pages); return; } - wbinvd(); + if (on_each_cpu(drm_clflush_ipi_handler, NULL, 1) != 0) + printk(KERN_ERR "Timed out waiting for cache flush.\n"); + +#elif defined(__powerpc__) + unsigned long i; + for (i = 0; i < num_pages; i++) { + struct page *page = pages[i]; + void *page_virtual; + + if (unlikely(page == NULL)) + continue; + + page_virtual = kmap_atomic(page, KM_USER0); + flush_dcache_range((unsigned long)page_virtual, + (unsigned long)page_virtual + PAGE_SIZE); + kunmap_atomic(page_virtual, KM_USER0); + } +#else + if (on_each_cpu(drm_clflush_ipi_handler, NULL, 1) != 0) + printk(KERN_ERR "Timed out waiting for drm cache flush\n"); #endif } EXPORT_SYMBOL(drm_clflush_pages); diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c index 42cca55..a55ee1a 100644 --- a/drivers/gpu/drm/ttm/ttm_tt.c +++ b/drivers/gpu/drm/ttm/ttm_tt.c @@ -34,76 +34,13 @@ #include <linux/pagemap.h> #include <linux/file.h> #include <linux/swap.h> +#include "drm_cache.h" #include "ttm/ttm_module.h" #include "ttm/ttm_bo_driver.h" #include "ttm/ttm_placement.h" static int ttm_tt_swapin(struct ttm_tt *ttm); -#if defined(CONFIG_X86) -static void ttm_tt_clflush_page(struct page *page) -{ - uint8_t *page_virtual; - unsigned int i; - - if (unlikely(page == NULL)) - return; - - page_virtual = kmap_atomic(page, KM_USER0); - - for (i = 0; i < PAGE_SIZE; i += boot_cpu_data.x86_clflush_size) - clflush(page_virtual + i); - - kunmap_atomic(page_virtual, KM_USER0); -} - -static void ttm_tt_cache_flush_clflush(struct page *pages[], - unsigned long num_pages) -{ - unsigned long i; - - mb(); - for (i = 0; i < num_pages; ++i) - ttm_tt_clflush_page(*pages++); - mb(); -} -#elif !defined(__powerpc__) -static void ttm_tt_ipi_handler(void *null) -{ - ; -} -#endif - -void ttm_tt_cache_flush(struct page *pages[], unsigned long num_pages) -{ - -#if defined(CONFIG_X86) - if (cpu_has_clflush) { - ttm_tt_cache_flush_clflush(pages, num_pages); - return; - } -#elif defined(__powerpc__) - unsigned long i; - - for (i = 0; i < num_pages; ++i) { - struct page *page = pages[i]; - void *page_virtual; - - if (unlikely(page == NULL)) - continue; - - page_virtual = kmap_atomic(page, KM_USER0); - flush_dcache_range((unsigned long) page_virtual, - (unsigned long) page_virtual + PAGE_SIZE); - kunmap_atomic(page_virtual, KM_USER0); - } -#else - if (on_each_cpu(ttm_tt_ipi_handler, NULL, 1) != 0) - printk(KERN_ERR TTM_PFX - "Timed out waiting for drm cache flush.\n"); -#endif -} - /** * Allocates storage for pointers to the pages that back the ttm. * @@ -302,7 +239,7 @@ static int ttm_tt_set_caching(struct ttm_tt *ttm, } if (ttm->caching_state == tt_cached) - ttm_tt_cache_flush(ttm->pages, ttm->num_pages); + drm_clflush_pages(ttm->pages, ttm->num_pages); for (i = 0; i < ttm->num_pages; ++i) { cur_page = ttm->pages[i]; diff --git a/include/drm/drm_cache.h b/include/drm/drm_cache.h new file mode 100644 index 0000000..7bfb063 --- /dev/null +++ b/include/drm/drm_cache.h @@ -0,0 +1,38 @@ +/************************************************************************** + * + * Copyright 2009 Red Hat Inc. + * 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: + * Dave Airlie <airlied@redhat.com> + */ + +#ifndef _DRM_CACHE_H_ +#define _DRM_CACHE_H_ + +void drm_clflush_pages(struct page *pages[], unsigned long num_pages); + +#endif |