1 // SPDX-License-Identifier: GPL-2.0
25 #define dvma_index(baddr) ((baddr - DVMA_START) >> DVMA_PAGE_SHIFT)
31 	unsigned long end;  member
82 		if((hole->start == 0) && (hole->end == 0) && (hole->size == 0))  in print_holes()
85 		pr_info("hole: start %08lx end %08lx size %08lx\n",  in print_holes()
86 			hole->start, hole->end, hole->size);  in print_holes()
89 	pr_info("end of hole listing...\n");  in print_holes()
109 		if(hole->end == prev->start) {  in refill()
110 			hole->size += prev->size;  in refill()
111 			hole->end = prev->end;  in refill()
112 			list_move(&(prev->list), &hole_cache);  in refill()
133 	list_del(&(ret->list));  in rmcache()
139 static inline unsigned long get_baddr(int len, unsigned long align)  in get_baddr()  argument
159 		if(align > DVMA_PAGE_SIZE)  in get_baddr()
160 			newlen = len + ((hole->end - len) & (align-1));  in get_baddr()
164 		if(hole->size > newlen) {  in get_baddr()
165 			hole->end -= newlen;  in get_baddr()
166 			hole->size -= newlen;  in get_baddr()
167 			dvma_entry_use(hole->end) = newlen;  in get_baddr()
172 			return hole->end;  in get_baddr()
173 		} else if(hole->size == newlen) {  in get_baddr()
174 			list_move(&(hole->list), &hole_cache);  in get_baddr()
175 			dvma_entry_use(hole->start) = newlen;  in get_baddr()
180 			return hole->start;  in get_baddr()
210 		if(hole->end == baddr) {  in free_baddr()
211 			hole->end += len;  in free_baddr()
212 			hole->size += len;  in free_baddr()
214 		} else if(hole->start == (baddr + len)) {  in free_baddr()
215 			hole->start = baddr;  in free_baddr()
216 			hole->size += len;  in free_baddr()
224 	hole->start = baddr;  in free_baddr()
225 	hole->end = baddr + len;  in free_baddr()
226 	hole->size = len;  in free_baddr()
228 //	list_add_tail(&(hole->list), cur);  in free_baddr()
229 	list_add(&(hole->list), cur);  in free_baddr()
249 	hole->start = DVMA_START;  in dvma_init()
250 	hole->end = DVMA_END;  in dvma_init()
251 	hole->size = DVMA_SIZE;  in dvma_init()
253 	list_add(&(hole->list), &hole_list);  in dvma_init()
262 unsigned long dvma_map_align(unsigned long kaddr, int len, int align)  in dvma_map_align()  argument
281 	len = ((len + (DVMA_PAGE_SIZE-1)) & DVMA_PAGE_MASK);  in dvma_map_align()
283 	if(align == 0)  in dvma_map_align()
284 		align = DVMA_PAGE_SIZE;  in dvma_map_align()
286 		align = ((align + (DVMA_PAGE_SIZE-1)) & DVMA_PAGE_MASK);  in dvma_map_align()
288 	baddr = get_baddr(len, align);  in dvma_map_align()
317 void *dvma_malloc_align(unsigned long len, unsigned long align)  in dvma_malloc_align()  argument
327 	len = ((len + (DVMA_PAGE_SIZE-1)) & DVMA_PAGE_MASK);  in dvma_malloc_align()
332 	if((baddr = (unsigned long)dvma_map_align(kaddr, len, align)) == 0) {  in dvma_malloc_align()
345 	pr_debug("mapped %08lx bytes %08lx kern -> %08lx bus\n", len, kaddr,  in dvma_malloc_align()