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108 lines
3.5 KiB
C
Executable File
108 lines
3.5 KiB
C
Executable File
#ifndef _JZ_DMMU_H_
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#define _JZ_DMMU_H_
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__BEGIN_DECLS
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#define DMMU_DEV_NAME "/dev/dmmu"
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#define DMMU_PAGE_SIZE 4096
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#define DMMU_IOCTL_MAGIC 'd'
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#define DMMU_GET_PAGE_TABLE_BASE_PHYS _IOW(DMMU_IOCTL_MAGIC, 0x01, unsigned int)
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#define DMMU_GET_BASE_PHYS _IOR(DMMU_IOCTL_MAGIC, 0x02, unsigned int)
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#define DMMU_MAP_USER_MEM _IOWR(DMMU_IOCTL_MAGIC, 0x11, struct dmmu_mem_info)
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#define DMMU_UNMAP_USER_MEM _IOW(DMMU_IOCTL_MAGIC, 0x12, struct dmmu_mem_info)
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#define DMMU_GET_TLB_PHYS _IOWR(DMMU_IOCTL_MAGIC, 0x13, struct dmmu_mem_info)
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#define DMMU_SET_TABLE_FLAG _IOW(DMMU_IOCTL_MAGIC, 0x34, int)
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#define VIDEO_TABLE_FLAGE 1
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struct dmmu_mem_info {
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int size;
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int page_count;
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unsigned int paddr;
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void *vaddr;
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void *pages_phys_addr_table;
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unsigned int start_offset;
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unsigned int end_offset;
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};
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static inline void init_page_count(struct dmmu_mem_info *info)
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{
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int page_count;
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#ifdef __MIPS_LINUX__
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unsigned int start; /* page start */
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unsigned int end; /* page end */
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start = ((unsigned int)info->vaddr) & (~(DMMU_PAGE_SIZE-1));
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end = ((unsigned int)info->vaddr + (info->size-1)) & (~(DMMU_PAGE_SIZE-1));
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page_count = (end - start)/(DMMU_PAGE_SIZE) + 1;
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info->page_count = page_count;
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info->start_offset = (unsigned int)info->vaddr - start;
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info->end_offset = ((unsigned int)info->vaddr + info->size) - end;
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// printf("<----start_offset: %x, end_offset: %x, page_count: %d\n", info->start_offset, info->end_offset, page_count);
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#else
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unsigned long start; /* page start */
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unsigned long end; /* page end */
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start = ((unsigned long)info->vaddr) & (~(DMMU_PAGE_SIZE-1));
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end = ((unsigned long)info->vaddr + (info->size-1)) & (~(DMMU_PAGE_SIZE-1));
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page_count = (end - start)/(DMMU_PAGE_SIZE) + 1;
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info->page_count = page_count;
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info->start_offset = (unsigned long)info->vaddr - start;
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info->end_offset = ((unsigned long)info->vaddr + info->size) - end;
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// printf("<----start_offset: %x, end_offset: %x, page_count: %d\n", info->start_offset, info->end_offset, page_count);
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#endif
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return;
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}
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static inline int dump_mem_info(struct dmmu_mem_info *mem, char * description)
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{
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if (mem == NULL) {
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printf("mem is NULL!\n");
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return -1;
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}
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printf("mem: %p, \t%s\n", mem, description?description:"");
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printf("\tvaddr= %p\n", mem->vaddr);
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printf("\tsize= %d (0x%x)\n", mem->size, mem->size);
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printf("\tpaddr= 0x%08x\n", mem->paddr);
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printf("\tpage_count= %d\n", mem->page_count);
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printf("\tpages_phys_addr_table=%p\n", mem->pages_phys_addr_table);
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printf("\tstart_offset= %d\n", mem->start_offset);
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printf("\tend_offset= %d\n", mem->end_offset);
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return 0;
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}
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enum REQUIRE_ALLOC_PAGE_TABLE {
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NO_REQUIRED = 0,
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REQUIRED = 1,
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};
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extern int dmmu_init();
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extern int dmmu_set_table_flag(void);
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extern int dmmu_init_with_set_page_table(unsigned int * phys_addr, int size);
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extern int dmmu_deinit();
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extern int dmmu_get_page_table_base_phys(unsigned int * phys_addr);
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extern int dmmu_set_page_table(unsigned int * phys_addr, int size);
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extern int dmmu_map_user_memory(struct dmmu_mem_info* mem);
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extern int dmmu_unmap_user_memory(struct dmmu_mem_info* mem);
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extern int dmmu_map_user_mem(void * vaddr, int size);
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extern int dmmu_unmap_user_mem(void * vaddr, int size);
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extern int dmmu_match_user_mem_tlb(void * vaddr, int size);
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extern int dmmu_get_memory_physical_address(struct dmmu_mem_info* mem);
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extern int dmmu_release_memory_physical_address(struct dmmu_mem_info* mem);
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__END_DECLS
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#endif /* _JZ_DMMU_H_ */
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