diff options
author | Adam Jackson <ajax@theobromine.nwnk.net> | 2006-07-19 16:19:25 -0400 |
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committer | Adam Jackson <ajax@theobromine.nwnk.net> | 2006-07-19 16:19:25 -0400 |
commit | 6677e2a10b820a5ccfd375cc627b8e41453a71da (patch) | |
tree | 2f7f388e3450f644d84f2ef4c083314aeb57e886 /linux/drm_memory.h | |
parent | af7b89d7246efbed7d05c38fcaa6a13c4b89db90 (diff) |
Delete the pre-core DRM code with extreme prejudice.
Diffstat (limited to 'linux/drm_memory.h')
-rw-r--r-- | linux/drm_memory.h | 374 |
1 files changed, 0 insertions, 374 deletions
diff --git a/linux/drm_memory.h b/linux/drm_memory.h deleted file mode 100644 index 9674cef0..00000000 --- a/linux/drm_memory.h +++ /dev/null @@ -1,374 +0,0 @@ -/** - * \file drm_memory.h - * Memory management wrappers for DRM - * - * \author Rickard E. (Rik) Faith <faith@valinux.com> - * \author Gareth Hughes <gareth@valinux.com> - */ - -/* - * Created: Thu Feb 4 14:00:34 1999 by faith@valinux.com - * - * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. - * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. - * 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, 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 (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 NONINFRINGEMENT. IN NO EVENT SHALL - * VA LINUX SYSTEMS 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. - */ - -#include <linux/config.h> -#include <linux/highmem.h> -#include "drmP.h" - -/** - * Cut down version of drm_memory_debug.h, which used to be called - * drm_memory.h. - */ - -/* Need the 4-argument version of vmap(). */ -#if __OS_HAS_AGP && defined(VMAP_4_ARGS) - -#include <linux/vmalloc.h> - -#ifdef HAVE_PAGE_AGP -#include <asm/agp.h> -#else -# ifdef __powerpc__ -# define PAGE_AGP __pgprot(_PAGE_KERNEL | _PAGE_NO_CACHE) -# else -# define PAGE_AGP PAGE_KERNEL -# endif -#endif - -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) -#ifndef pte_offset_kernel -# define pte_offset_kernel(dir, address) pte_offset(dir, address) -#endif -#ifndef pte_pfn -# define pte_pfn(pte) (pte_page(pte) - mem_map) -#endif -#ifndef pfn_to_page -# define pfn_to_page(pfn) (mem_map + (pfn)) -#endif -#endif - -/* - * Find the drm_map that covers the range [offset, offset+size). - */ -static inline drm_map_t * -drm_lookup_map (unsigned long offset, unsigned long size, drm_device_t *dev) -{ - struct list_head *list; - drm_map_list_t *r_list; - drm_map_t *map; - - list_for_each(list, &dev->maplist->head) { - r_list = (drm_map_list_t *) list; - map = r_list->map; - if (!map) - continue; - if (map->offset <= offset && (offset + size) <= (map->offset + map->size)) - return map; - } - return NULL; -} - -static inline void * -agp_remap (unsigned long offset, unsigned long size, drm_device_t *dev) -{ - unsigned long *phys_addr_map, i, num_pages = PAGE_ALIGN(size) / PAGE_SIZE; - struct drm_agp_mem *agpmem; - struct page **page_map; - void *addr; - - size = PAGE_ALIGN(size); - -#ifdef __alpha__ - offset -= dev->hose->mem_space->start; -#endif - - for (agpmem = dev->agp->memory; agpmem; agpmem = agpmem->next) - if (agpmem->bound <= offset - && (agpmem->bound + (agpmem->pages << PAGE_SHIFT)) >= (offset + size)) - break; - if (!agpmem) - return NULL; - - /* - * OK, we're mapping AGP space on a chipset/platform on which memory accesses by - * the CPU do not get remapped by the GART. We fix this by using the kernel's - * page-table instead (that's probably faster anyhow...). - */ - /* note: use vmalloc() because num_pages could be large... */ - page_map = vmalloc(num_pages * sizeof(struct page *)); - if (!page_map) - return NULL; - - phys_addr_map = agpmem->memory->memory + (offset - agpmem->bound) / PAGE_SIZE; - for (i = 0; i < num_pages; ++i) - page_map[i] = pfn_to_page(phys_addr_map[i] >> PAGE_SHIFT); - addr = vmap(page_map, num_pages, VM_IOREMAP, PAGE_AGP); - vfree(page_map); - - return addr; -} - -static inline unsigned long -drm_follow_page (void *vaddr) -{ - pgd_t *pgd = pgd_offset_k((unsigned long) vaddr); - pmd_t *pmd = pmd_offset(pgd, (unsigned long) vaddr); - pte_t *ptep = pte_offset_kernel(pmd, (unsigned long) vaddr); - return pte_pfn(*ptep) << PAGE_SHIFT; -} - -#else /* __OS_HAS_AGP */ - -static inline drm_map_t *drm_lookup_map(unsigned long offset, unsigned long size, drm_device_t *dev) -{ - return NULL; -} - -static inline void *agp_remap(unsigned long offset, unsigned long size, drm_device_t *dev) -{ - return NULL; -} - -static inline unsigned long drm_follow_page (void *vaddr) -{ - return 0; -} - -#endif - -static inline void *drm_ioremap(unsigned long offset, unsigned long size, drm_device_t *dev) -{ -#if defined(VMAP_4_ARGS) - if (drm_core_has_AGP(dev) && dev->agp && dev->agp->cant_use_aperture) { - drm_map_t *map = drm_lookup_map(offset, size, dev); - - if (map && map->type == _DRM_AGP) - return agp_remap(offset, size, dev); - } -#endif - - return ioremap(offset, size); -} - -static inline void *drm_ioremap_nocache(unsigned long offset, unsigned long size, - drm_device_t *dev) -{ -#if defined(VMAP_4_ARGS) - if (drm_core_has_AGP(dev) && dev->agp && dev->agp->cant_use_aperture) { - drm_map_t *map = drm_lookup_map(offset, size, dev); - - if (map && map->type == _DRM_AGP) - return agp_remap(offset, size, dev); - } -#endif - - return ioremap_nocache(offset, size); -} - -static inline void drm_ioremapfree(void *pt, unsigned long size, drm_device_t *dev) -{ -#if defined(VMAP_4_ARGS) - /* - * This is a bit ugly. It would be much cleaner if the DRM API would use separate - * routines for handling mappings in the AGP space. Hopefully this can be done in - * a future revision of the interface... - */ - if (drm_core_has_AGP(dev) && dev->agp && dev->agp->cant_use_aperture - && ((unsigned long) pt >= VMALLOC_START && (unsigned long) pt < VMALLOC_END)) - { - unsigned long offset; - drm_map_t *map; - - offset = drm_follow_page(pt) | ((unsigned long) pt & ~PAGE_MASK); - map = drm_lookup_map(offset, size, dev); - if (map && map->type == _DRM_AGP) { - vunmap(pt); - return; - } - } -#endif - - iounmap(pt); -} - - -#ifdef DEBUG_MEMORY -#include "drm_memory_debug.h" -#else - -/** No-op. */ -void DRM(mem_init)(void) -{ -} - -/** - * Called when "/proc/dri/%dev%/mem" is read. - * - * \param buf output buffer. - * \param start start of output data. - * \param offset requested start offset. - * \param len requested number of bytes. - * \param eof whether there is no more data to return. - * \param data private data. - * \return number of written bytes. - * - * No-op. - */ -int DRM(mem_info)(char *buf, char **start, off_t offset, - int len, int *eof, void *data) -{ - return 0; -} - -/** Wrapper around kmalloc() */ -void *DRM(calloc)(size_t nmemb, size_t size, int area) -{ - void *addr; - - addr = kmalloc(size * nmemb, GFP_KERNEL); - if (addr != NULL) - memset((void *)addr, 0, size * nmemb); - - return addr; -} - -/** Wrapper around kmalloc() and kfree() */ -void *DRM(realloc)(void *oldpt, size_t oldsize, size_t size, int area) -{ - void *pt; - - if (!(pt = kmalloc(size, GFP_KERNEL))) return NULL; - if (oldpt && oldsize) { - memcpy(pt, oldpt, oldsize); - kfree(oldpt); - } - return pt; -} - -/** - * Allocate pages. - * - * \param order size order. - * \param area memory area. (Not used.) - * \return page address on success, or zero on failure. - * - * Allocate and reserve free pages. - */ -unsigned long DRM(alloc_pages)(int order, int area) -{ - unsigned long address; - unsigned long bytes = PAGE_SIZE << order; - unsigned long addr; - unsigned int sz; - - address = __get_free_pages(GFP_KERNEL, order); - if (!address) - return 0; - - /* Zero */ - memset((void *)address, 0, bytes); - - /* Reserve */ - for (addr = address, sz = bytes; - sz > 0; - addr += PAGE_SIZE, sz -= PAGE_SIZE) { - SetPageReserved(virt_to_page(addr)); - } - - return address; -} - -/** - * Free pages. - * - * \param address address of the pages to free. - * \param order size order. - * \param area memory area. (Not used.) - * - * Unreserve and free pages allocated by alloc_pages(). - */ -void DRM(free_pages)(unsigned long address, int order, int area) -{ - unsigned long bytes = PAGE_SIZE << order; - unsigned long addr; - unsigned int sz; - - if (!address) - return; - - /* Unreserve */ - for (addr = address, sz = bytes; - sz > 0; - addr += PAGE_SIZE, sz -= PAGE_SIZE) { - ClearPageReserved(virt_to_page(addr)); - } - - free_pages(address, order); -} - -/** Wrapper around drm_ioremap() */ -void *DRM(ioremap)(unsigned long offset, unsigned long size, drm_device_t *dev) -{ - return drm_ioremap(offset, size, dev); -} - -/** Wrapper around drm_ioremap_nocache() */ -void *DRM(ioremap_nocache)(unsigned long offset, unsigned long size, drm_device_t *dev) -{ - return drm_ioremap_nocache(offset, size, dev); -} - -/** Wrapper around drm_iounmap() */ -void DRM(ioremapfree)(void *pt, unsigned long size, drm_device_t *dev) -{ - drm_ioremapfree(pt, size, dev); -} - -#if __OS_HAS_AGP -/** Wrapper around agp_allocate_memory() */ -DRM_AGP_MEM *DRM(alloc_agp)(int pages, u32 type) -{ - return DRM(agp_allocate_memory)(pages, type); -} - -/** Wrapper around agp_free_memory() */ -int DRM(free_agp)(DRM_AGP_MEM *handle, int pages) -{ - return DRM(agp_free_memory)(handle) ? 0 : -EINVAL; -} - -/** Wrapper around agp_bind_memory() */ -int DRM(bind_agp)(DRM_AGP_MEM *handle, unsigned int start) -{ - return DRM(agp_bind_memory)(handle, start); -} - -/** Wrapper around agp_unbind_memory() */ -int DRM(unbind_agp)(DRM_AGP_MEM *handle) -{ - return DRM(agp_unbind_memory)(handle); -} -#endif /* agp */ -#endif /* debug_memory */ |