| /* Copyright (c) 2002,2007-2012, Code Aurora Forum. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 and |
| * only version 2 as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| */ |
| #ifndef __KGSL_SHAREDMEM_H |
| #define __KGSL_SHAREDMEM_H |
| |
| #include <linux/slab.h> |
| #include <linux/dma-mapping.h> |
| #include <linux/vmalloc.h> |
| #include "kgsl_mmu.h" |
| |
| struct kgsl_device; |
| struct kgsl_process_private; |
| |
| #define KGSL_CACHE_OP_INV 0x01 |
| #define KGSL_CACHE_OP_FLUSH 0x02 |
| #define KGSL_CACHE_OP_CLEAN 0x03 |
| |
| /** Set if the memdesc describes cached memory */ |
| #define KGSL_MEMFLAGS_CACHED 0x00000001 |
| |
| struct kgsl_memdesc_ops { |
| int (*vmflags)(struct kgsl_memdesc *); |
| int (*vmfault)(struct kgsl_memdesc *, struct vm_area_struct *, |
| struct vm_fault *); |
| void (*free)(struct kgsl_memdesc *memdesc); |
| }; |
| |
| extern struct kgsl_memdesc_ops kgsl_vmalloc_ops; |
| |
| int kgsl_sharedmem_vmalloc(struct kgsl_memdesc *memdesc, |
| struct kgsl_pagetable *pagetable, size_t size); |
| |
| int kgsl_sharedmem_vmalloc_user(struct kgsl_memdesc *memdesc, |
| struct kgsl_pagetable *pagetable, |
| size_t size, int flags); |
| |
| int kgsl_sharedmem_alloc_coherent(struct kgsl_memdesc *memdesc, size_t size); |
| |
| int kgsl_sharedmem_ebimem_user(struct kgsl_memdesc *memdesc, |
| struct kgsl_pagetable *pagetable, |
| size_t size, int flags); |
| |
| int kgsl_sharedmem_ebimem(struct kgsl_memdesc *memdesc, |
| struct kgsl_pagetable *pagetable, |
| size_t size); |
| |
| 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_writel(const struct kgsl_memdesc *memdesc, |
| unsigned int offsetbytes, |
| uint32_t src); |
| |
| int kgsl_sharedmem_set(const struct kgsl_memdesc *memdesc, |
| unsigned int offsetbytes, unsigned int value, |
| unsigned int sizebytes); |
| |
| void kgsl_cache_range_op(struct kgsl_memdesc *memdesc, int op); |
| |
| void kgsl_process_init_sysfs(struct kgsl_process_private *private); |
| void kgsl_process_uninit_sysfs(struct kgsl_process_private *private); |
| |
| int kgsl_sharedmem_init_sysfs(void); |
| void kgsl_sharedmem_uninit_sysfs(void); |
| |
| static inline int |
| memdesc_sg_phys(struct kgsl_memdesc *memdesc, |
| unsigned int physaddr, unsigned int size) |
| { |
| struct page *page = phys_to_page(physaddr); |
| |
| memdesc->sg = vmalloc(sizeof(struct scatterlist) * 1); |
| if (memdesc->sg == NULL) |
| return -ENOMEM; |
| |
| memdesc->sglen = 1; |
| sg_init_table(memdesc->sg, 1); |
| sg_set_page(&memdesc->sg[0], page, size, 0); |
| return 0; |
| } |
| |
| static inline int |
| kgsl_allocate(struct kgsl_memdesc *memdesc, |
| struct kgsl_pagetable *pagetable, size_t size) |
| { |
| if (kgsl_mmu_get_mmutype() == KGSL_MMU_TYPE_NONE) |
| return kgsl_sharedmem_ebimem(memdesc, pagetable, size); |
| return kgsl_sharedmem_vmalloc(memdesc, pagetable, size); |
| } |
| |
| static inline int |
| kgsl_allocate_user(struct kgsl_memdesc *memdesc, |
| struct kgsl_pagetable *pagetable, |
| size_t size, unsigned int flags) |
| { |
| if (kgsl_mmu_get_mmutype() == KGSL_MMU_TYPE_NONE) |
| return kgsl_sharedmem_ebimem_user(memdesc, pagetable, size, |
| flags); |
| return kgsl_sharedmem_vmalloc_user(memdesc, pagetable, size, flags); |
| } |
| |
| static inline int |
| kgsl_allocate_contiguous(struct kgsl_memdesc *memdesc, size_t size) |
| { |
| int ret = kgsl_sharedmem_alloc_coherent(memdesc, size); |
| if (!ret && (kgsl_mmu_get_mmutype() == KGSL_MMU_TYPE_NONE)) |
| memdesc->gpuaddr = memdesc->physaddr; |
| return ret; |
| } |
| |
| #endif /* __KGSL_SHAREDMEM_H */ |