/drivers/gpu/msm/kgsl_sharedmem.h
https://bitbucket.org/cresqo/cm7-p500-kernel · C Header · 122 lines · 70 code · 21 blank · 31 comment · 1 complexity · bccff7584f9beb5662bbd87a19ef0f6d MD5 · raw file
- /* Copyright (c) 2002,2007-2010, Code Aurora Forum. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following
- * disclaimer in the documentation and/or other materials provided
- * with the distribution.
- * * Neither the name of Code Aurora Forum, Inc. nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
- * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
- * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
- * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
- * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
- #ifndef __GSL_SHAREDMEM_H
- #define __GSL_SHAREDMEM_H
- #include <linux/dma-mapping.h>
- #define KGSL_PAGESIZE 0x1000
- #define KGSL_PAGESIZE_SHIFT 12
- #define KGSL_PAGEMASK (~(KGSL_PAGESIZE - 1))
- struct kgsl_pagetable;
- /* Memflags for caching operations */
- #define KGSL_MEMFLAGS_CACHE_INV 0x00000001
- #define KGSL_MEMFLAGS_CACHE_FLUSH 0x00000002
- #define KGSL_MEMFLAGS_CACHE_CLEAN 0x00000004
- #define KGSL_MEMFLAGS_CACHE_MASK 0x0000000F
- /* Flags to differentiate memory types */
- #define KGSL_MEMFLAGS_CONPHYS 0x00001000
- #define KGSL_MEMFLAGS_VMALLOC_MEM 0x00002000
- #define KGSL_MEMFLAGS_HOSTADDR 0x00004000
- #define KGSL_MEMFLAGS_ALIGNANY 0x00000000
- #define KGSL_MEMFLAGS_ALIGN32 0x00000000
- #define KGSL_MEMFLAGS_ALIGN64 0x00060000
- #define KGSL_MEMFLAGS_ALIGN128 0x00070000
- #define KGSL_MEMFLAGS_ALIGN256 0x00080000
- #define KGSL_MEMFLAGS_ALIGN512 0x00090000
- #define KGSL_MEMFLAGS_ALIGN1K 0x000A0000
- #define KGSL_MEMFLAGS_ALIGN2K 0x000B0000
- #define KGSL_MEMFLAGS_ALIGN4K 0x000C0000
- #define KGSL_MEMFLAGS_ALIGN8K 0x000D0000
- #define KGSL_MEMFLAGS_ALIGN16K 0x000E0000
- #define KGSL_MEMFLAGS_ALIGN32K 0x000F0000
- #define KGSL_MEMFLAGS_ALIGN64K 0x00100000
- #define KGSL_MEMFLAGS_ALIGNPAGE KGSL_MEMFLAGS_ALIGN4K
- #define KGSL_MEMFLAGS_ALIGN_MASK 0x00FF0000
- #define KGSL_MEMFLAGS_ALIGN_SHIFT 16
- /* shared memory allocation */
- struct kgsl_memdesc {
- struct kgsl_pagetable *pagetable;
- void *hostptr;
- unsigned int gpuaddr;
- unsigned int physaddr;
- unsigned int size;
- unsigned int priv;
- };
- int kgsl_sharedmem_vmalloc(struct kgsl_memdesc *memdesc,
- struct kgsl_pagetable *pagetable, size_t size);
- static inline int
- kgsl_sharedmem_alloc_coherent(struct kgsl_memdesc *memdesc, size_t size)
- {
- size = ALIGN(size, KGSL_PAGESIZE);
- memdesc->hostptr = dma_alloc_coherent(NULL, size, &memdesc->physaddr,
- GFP_KERNEL);
- if (!memdesc->hostptr)
- return -ENOMEM;
- memdesc->size = size;
- memdesc->priv = KGSL_MEMFLAGS_CONPHYS;
- return 0;
- }
- void kgsl_sharedmem_free(struct kgsl_memdesc *memdesc);
- int kgsl_sharedmem_readl(const struct kgsl_memdesc *memdesc,
- uint32_t *dst,
- unsigned int offsetbytes);
- int kgsl_sharedmem_read(const struct kgsl_memdesc *memdesc, void *dst,
- unsigned int offsetbytes, unsigned int sizebytes);
- int kgsl_sharedmem_writel(const struct kgsl_memdesc *memdesc,
- unsigned int offsetbytes,
- uint32_t src);
- int kgsl_sharedmem_write(const struct kgsl_memdesc *memdesc,
- unsigned int offsetbytes,
- void *src, unsigned int sizebytes);
- int kgsl_sharedmem_set(const struct kgsl_memdesc *memdesc,
- unsigned int offsetbytes, unsigned int value,
- unsigned int sizebytes);
- void kgsl_cache_range_op(unsigned long addr, int size,
- unsigned int flags);
- #endif /* __GSL_SHAREDMEM_H */