pci/trident/trident_memory.c

7  *  Trident 4DWave-NX memory page allocation (TLB area)
19 /* page arguments of these two macros are Trident page (4096 bytes), not like
22 #define __set_tlb_bus(trident,page,ptr,addr) \  argument
23 	do { (trident)->tlb.entries[page] = cpu_to_le32((addr) & ~(SNDRV_TRIDENT_PAGE_SIZE-1)); \
24 	     (trident)->tlb.shadow_entries[page] = (ptr); } while (0)
25 #define __tlb_to_ptr(trident,page) \  argument
26 	(void*)((trident)->tlb.shadow_entries[page])
27 #define __tlb_to_addr(trident,page) \  argument
28 	(dma_addr_t)le32_to_cpu((trident->tlb.entries[page]) & ~(SNDRV_TRIDENT_PAGE_SIZE - 1))
31 /* page size == SNDRV_TRIDENT_PAGE_SIZE */
32 #define ALIGN_PAGE_SIZE		PAGE_SIZE	/* minimum page size for allocation */
34 /* fill TLB entrie(s) corresponding to page with ptr */
35 #define set_tlb_bus(trident,page,ptr,addr) __set_tlb_bus(trident,page,ptr,addr)  argument
36 /* fill TLB entrie(s) corresponding to page with silence pointer */
37 #define set_silent_tlb(trident,page)	__set_tlb_bus(trident, page, (unsigned long)trident->tlb.silen…  argument
38 /* get aligned page from offset address */
40 /* get offset address from aligned page */
41 #define aligned_page_offset(page)	((page) << 12)  argument
42 /* get buffer address from aligned page */
43 #define page_to_ptr(trident,page)	__tlb_to_ptr(trident, page)  argument
44 /* get PCI physical address from aligned page */
45 #define page_to_addr(trident,page)	__tlb_to_addr(trident, page)  argument
48 /* page size == SNDRV_TRIDENT_PAGE_SIZE x 2*/
52 #define aligned_page_offset(page)	((page) << 13)  argument
53 #define page_to_ptr(trident,page)	__tlb_to_ptr(trident, (page) << 1)  argument
54 #define page_to_addr(trident,page)	__tlb_to_addr(trident, (page) << 1)  argument
57 static inline void set_tlb_bus(struct snd_trident *trident, int page,  in set_tlb_bus()  argument
60 	page <<= 1;  in set_tlb_bus()
61 	__set_tlb_bus(trident, page, ptr, addr);  in set_tlb_bus()
62 	__set_tlb_bus(trident, page+1, ptr + SNDRV_TRIDENT_PAGE_SIZE, addr + SNDRV_TRIDENT_PAGE_SIZE);  in set_tlb_bus()
64 static inline void set_silent_tlb(struct snd_trident *trident, int page)  in set_silent_tlb()  argument
66 	page <<= 1;  in set_silent_tlb()
67 …__set_tlb_bus(trident, page, (unsigned long)trident->tlb.silent_page.area, trident->tlb.silent_pag…  in set_silent_tlb()
68 …__set_tlb_bus(trident, page+1, (unsigned long)trident->tlb.silent_page.area, trident->tlb.silent_p…  in set_silent_tlb()
78  * of accessing page in set_tlb_bus and set_silent_tlb.  search_empty()
82 #define aligned_page_offset(page)	((page) * ALIGN_PAGE_SIZE)  argument
83 #define page_to_ptr(trident,page)	__tlb_to_ptr(trident, (page) * UNIT_PAGES)  argument
84 #define page_to_addr(trident,page)	__tlb_to_addr(trident, (page) * UNIT_PAGES)  argument
87 static inline void set_tlb_bus(struct snd_trident *trident, int page,  in set_tlb_bus()  argument
91 	page *= UNIT_PAGES;  in set_tlb_bus()
92 	for (i = 0; i < UNIT_PAGES; i++, page++) {  in set_tlb_bus()
93 		__set_tlb_bus(trident, page, ptr, addr);  in set_tlb_bus()
98 static inline void set_silent_tlb(struct snd_trident *trident, int page)  in set_silent_tlb()  argument
101 	page *= UNIT_PAGES;  in set_silent_tlb()
102 	for (i = 0; i < UNIT_PAGES; i++, page++)  in set_silent_tlb()
103 …__set_tlb_bus(trident, page, (unsigned long)trident->tlb.silent_page.area, trident->tlb.silent_pag…  in set_silent_tlb()
128 	int page, psize;  in search_empty()  local
132 	page = 0;  in search_empty()
135 		if (page + psize <= firstpg(blk))  in search_empty()
137 		page = lastpg(blk) + 1;  in search_empty()
139 	if (page + psize > MAX_ALIGN_PAGES)  in search_empty()
147 	blk->offset = aligned_page_offset(page); /* set aligned offset */  in search_empty()
148 	firstpg(blk) = page;  in search_empty()
149 	lastpg(blk) = page + psize - 1;  in search_empty()
164 		snd_printk(KERN_ERR "page is not aligned\n");  in is_valid_page()
171  * page allocation for DMA (Scatter-Gather version)
180 	int idx, page;  in snd_trident_alloc_sg_pages()  local
201 	for (page = firstpg(blk); page <= lastpg(blk); page++, idx++) {  in snd_trident_alloc_sg_pages()
211 		set_tlb_bus(trident, page, ptr, addr);  in snd_trident_alloc_sg_pages()
218  * page allocation for DMA (contiguous version)
226 	int page;  in snd_trident_alloc_cont_pages()  local
249 	for (page = firstpg(blk); page <= lastpg(blk); page++,  in snd_trident_alloc_cont_pages()
256 		set_tlb_bus(trident, page, ptr, addr);  in snd_trident_alloc_cont_pages()
263  * page allocation for DMA
279  * release DMA buffer from page table
285 	int page;  in snd_trident_free_pages()  local
293 	for (page = firstpg(blk); page <= lastpg(blk); page++)  in snd_trident_free_pages()
294 		set_silent_tlb(trident, page);  in snd_trident_free_pages()