The shadow TLB pointer table is allocated and set up, but never really used any longer by the driver. Let's drop it.
Since this is the only user of snd_pcm_sgbuf_get_ptr(), we can clean up the API after this change.
Signed-off-by: Takashi Iwai tiwai@suse.de --- sound/pci/trident/trident.h | 1 - sound/pci/trident/trident_main.c | 11 +------ sound/pci/trident/trident_memory.c | 53 +++++++++--------------------- 3 files changed, 17 insertions(+), 48 deletions(-)
diff --git a/sound/pci/trident/trident.h b/sound/pci/trident/trident.h index c7567edbe4c4..c579a44bb9ae 100644 --- a/sound/pci/trident/trident.h +++ b/sound/pci/trident/trident.h @@ -251,7 +251,6 @@ struct snd_trident_memblk_arg { struct snd_trident_tlb { __le32 *entries; /* 16k-aligned TLB table */ dma_addr_t entries_dmaaddr; /* 16k-aligned PCI address to TLB table */ - unsigned long * shadow_entries; /* shadow entries with virtual addresses */ struct snd_dma_buffer buffer; struct snd_util_memhdr * memhdr; /* page allocation list */ struct snd_dma_buffer silent_page; diff --git a/sound/pci/trident/trident_main.c b/sound/pci/trident/trident_main.c index 281ea7143b1c..cfbca3bd60ed 100644 --- a/sound/pci/trident/trident_main.c +++ b/sound/pci/trident/trident_main.c @@ -3331,12 +3331,6 @@ static int snd_trident_tlb_alloc(struct snd_trident *trident) } trident->tlb.entries = (__le32 *)ALIGN((unsigned long)trident->tlb.buffer.area, SNDRV_TRIDENT_MAX_PAGES * 4); trident->tlb.entries_dmaaddr = ALIGN(trident->tlb.buffer.addr, SNDRV_TRIDENT_MAX_PAGES * 4); - /* allocate shadow TLB page table (virtual addresses) */ - trident->tlb.shadow_entries = - vmalloc(array_size(SNDRV_TRIDENT_MAX_PAGES, - sizeof(unsigned long))); - if (!trident->tlb.shadow_entries) - return -ENOMEM;
/* allocate and setup silent page and initialise TLB entries */ if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, &trident->pci->dev, @@ -3345,10 +3339,8 @@ static int snd_trident_tlb_alloc(struct snd_trident *trident) return -ENOMEM; } memset(trident->tlb.silent_page.area, 0, SNDRV_TRIDENT_PAGE_SIZE); - for (i = 0; i < SNDRV_TRIDENT_MAX_PAGES; i++) { + for (i = 0; i < SNDRV_TRIDENT_MAX_PAGES; i++) trident->tlb.entries[i] = cpu_to_le32(trident->tlb.silent_page.addr & ~(SNDRV_TRIDENT_PAGE_SIZE-1)); - trident->tlb.shadow_entries[i] = (unsigned long)trident->tlb.silent_page.area; - }
/* use emu memory block manager code to manage tlb page allocation */ trident->tlb.memhdr = snd_util_memhdr_new(SNDRV_TRIDENT_PAGE_SIZE * SNDRV_TRIDENT_MAX_PAGES); @@ -3665,7 +3657,6 @@ static int snd_trident_free(struct snd_trident *trident) snd_util_memhdr_free(trident->tlb.memhdr); if (trident->tlb.silent_page.area) snd_dma_free_pages(&trident->tlb.silent_page); - vfree(trident->tlb.shadow_entries); snd_dma_free_pages(&trident->tlb.buffer); } pci_release_regions(trident->pci); diff --git a/sound/pci/trident/trident_memory.c b/sound/pci/trident/trident_memory.c index bb24dbf0530d..f831ec02702f 100644 --- a/sound/pci/trident/trident_memory.c +++ b/sound/pci/trident/trident_memory.c @@ -19,11 +19,8 @@ /* page arguments of these two macros are Trident page (4096 bytes), not like * aligned pages in others */ -#define __set_tlb_bus(trident,page,ptr,addr) \ - do { (trident)->tlb.entries[page] = cpu_to_le32((addr) & ~(SNDRV_TRIDENT_PAGE_SIZE-1)); \ - (trident)->tlb.shadow_entries[page] = (ptr); } while (0) -#define __tlb_to_ptr(trident,page) \ - (void*)((trident)->tlb.shadow_entries[page]) +#define __set_tlb_bus(trident,page,addr) \ + (trident)->tlb.entries[page] = cpu_to_le32((addr) & ~(SNDRV_TRIDENT_PAGE_SIZE-1)) #define __tlb_to_addr(trident,page) \ (dma_addr_t)le32_to_cpu((trident->tlb.entries[page]) & ~(SNDRV_TRIDENT_PAGE_SIZE - 1))
@@ -32,15 +29,13 @@ #define ALIGN_PAGE_SIZE PAGE_SIZE /* minimum page size for allocation */ #define MAX_ALIGN_PAGES SNDRV_TRIDENT_MAX_PAGES /* maxmium aligned pages */ /* fill TLB entrie(s) corresponding to page with ptr */ -#define set_tlb_bus(trident,page,ptr,addr) __set_tlb_bus(trident,page,ptr,addr) +#define set_tlb_bus(trident,page,addr) __set_tlb_bus(trident,page,addr) /* fill TLB entrie(s) corresponding to page with silence pointer */ -#define set_silent_tlb(trident,page) __set_tlb_bus(trident, page, (unsigned long)trident->tlb.silent_page.area, trident->tlb.silent_page.addr) +#define set_silent_tlb(trident,page) __set_tlb_bus(trident, page, trident->tlb.silent_page.addr) /* get aligned page from offset address */ #define get_aligned_page(offset) ((offset) >> 12) /* get offset address from aligned page */ #define aligned_page_offset(page) ((page) << 12) -/* get buffer address from aligned page */ -#define page_to_ptr(trident,page) __tlb_to_ptr(trident, page) /* get PCI physical address from aligned page */ #define page_to_addr(trident,page) __tlb_to_addr(trident, page)
@@ -50,22 +45,21 @@ #define MAX_ALIGN_PAGES (SNDRV_TRIDENT_MAX_PAGES / 2) #define get_aligned_page(offset) ((offset) >> 13) #define aligned_page_offset(page) ((page) << 13) -#define page_to_ptr(trident,page) __tlb_to_ptr(trident, (page) << 1) #define page_to_addr(trident,page) __tlb_to_addr(trident, (page) << 1)
/* fill TLB entries -- we need to fill two entries */ static inline void set_tlb_bus(struct snd_trident *trident, int page, - unsigned long ptr, dma_addr_t addr) + dma_addr_t addr) { page <<= 1; - __set_tlb_bus(trident, page, ptr, addr); - __set_tlb_bus(trident, page+1, ptr + SNDRV_TRIDENT_PAGE_SIZE, addr + SNDRV_TRIDENT_PAGE_SIZE); + __set_tlb_bus(trident, page, addr); + __set_tlb_bus(trident, page+1, addr + SNDRV_TRIDENT_PAGE_SIZE); } static inline void set_silent_tlb(struct snd_trident *trident, int page) { page <<= 1; - __set_tlb_bus(trident, page, (unsigned long)trident->tlb.silent_page.area, trident->tlb.silent_page.addr); - __set_tlb_bus(trident, page+1, (unsigned long)trident->tlb.silent_page.area, trident->tlb.silent_page.addr); + __set_tlb_bus(trident, page, trident->tlb.silent_page.addr); + __set_tlb_bus(trident, page+1, trident->tlb.silent_page.addr); }
#else @@ -80,18 +74,16 @@ static inline void set_silent_tlb(struct snd_trident *trident, int page) */ #define get_aligned_page(offset) ((offset) / ALIGN_PAGE_SIZE) #define aligned_page_offset(page) ((page) * ALIGN_PAGE_SIZE) -#define page_to_ptr(trident,page) __tlb_to_ptr(trident, (page) * UNIT_PAGES) #define page_to_addr(trident,page) __tlb_to_addr(trident, (page) * UNIT_PAGES)
/* fill TLB entries -- UNIT_PAGES entries must be filled */ static inline void set_tlb_bus(struct snd_trident *trident, int page, - unsigned long ptr, dma_addr_t addr) + dma_addr_t addr) { int i; page *= UNIT_PAGES; - for (i = 0; i < UNIT_PAGES; i++, page++) { - __set_tlb_bus(trident, page, ptr, addr); - ptr += SNDRV_TRIDENT_PAGE_SIZE; + for (i = 0; i < UNIT_PAGES; i++, pagetr++) { + __set_tlb_bus(trident, page, addr); addr += SNDRV_TRIDENT_PAGE_SIZE; } } @@ -100,20 +92,11 @@ static inline void set_silent_tlb(struct snd_trident *trident, int page) int i; page *= UNIT_PAGES; for (i = 0; i < UNIT_PAGES; i++, page++) - __set_tlb_bus(trident, page, (unsigned long)trident->tlb.silent_page.area, trident->tlb.silent_page.addr); + __set_tlb_bus(trident, page, trident->tlb.silent_page.addr); }
#endif /* PAGE_SIZE */
-/* calculate buffer pointer from offset address */ -static inline void *offset_ptr(struct snd_trident *trident, int offset) -{ - char *ptr; - ptr = page_to_ptr(trident, get_aligned_page(offset)); - ptr += offset % ALIGN_PAGE_SIZE; - return (void*)ptr; -} - /* first and last (aligned) pages of memory block */ #define firstpg(blk) (((struct snd_trident_memblk_arg *)snd_util_memblk_argptr(blk))->first_page) #define lastpg(blk) (((struct snd_trident_memblk_arg *)snd_util_memblk_argptr(blk))->last_page) @@ -201,14 +184,12 @@ snd_trident_alloc_sg_pages(struct snd_trident *trident, for (page = firstpg(blk); page <= lastpg(blk); page++, idx++) { unsigned long ofs = idx << PAGE_SHIFT; dma_addr_t addr = snd_pcm_sgbuf_get_addr(substream, ofs); - unsigned long ptr = (unsigned long) - snd_pcm_sgbuf_get_ptr(substream, ofs); if (! is_valid_page(addr)) { __snd_util_mem_free(hdr, blk); mutex_unlock(&hdr->block_mutex); return NULL; } - set_tlb_bus(trident, page, ptr, addr); + set_tlb_bus(trident, page, addr); } mutex_unlock(&hdr->block_mutex); return blk; @@ -226,7 +207,6 @@ snd_trident_alloc_cont_pages(struct snd_trident *trident, int page; struct snd_pcm_runtime *runtime = substream->runtime; dma_addr_t addr; - unsigned long ptr;
if (snd_BUG_ON(runtime->dma_bytes <= 0 || runtime->dma_bytes > SNDRV_TRIDENT_MAX_PAGES * @@ -245,15 +225,14 @@ snd_trident_alloc_cont_pages(struct snd_trident *trident, /* set TLB entries */ addr = runtime->dma_addr; - ptr = (unsigned long)runtime->dma_area; for (page = firstpg(blk); page <= lastpg(blk); page++, - ptr += SNDRV_TRIDENT_PAGE_SIZE, addr += SNDRV_TRIDENT_PAGE_SIZE) { + addr += SNDRV_TRIDENT_PAGE_SIZE) { if (! is_valid_page(addr)) { __snd_util_mem_free(hdr, blk); mutex_unlock(&hdr->block_mutex); return NULL; } - set_tlb_bus(trident, page, ptr, addr); + set_tlb_bus(trident, page, addr); } mutex_unlock(&hdr->block_mutex); return blk;