From: batt Date: Fri, 30 Jul 2010 15:10:43 +0000 (+0000) Subject: Add support for devices which can partial write a block. X-Git-Tag: 2.6.0~282 X-Git-Url: https://codewiz.org/gitweb?a=commitdiff_plain;h=09befbcd1ee296ad30790e303adec8dc1a104f07;p=bertos.git Add support for devices which can partial write a block. Update drivers accordingly. git-svn-id: https://src.develer.com/svnoss/bertos/trunk@4108 38d2e660-2303-0410-9eaa-f027e97ec537 --- diff --git a/bertos/drv/sd.c b/bertos/drv/sd.c index 2b462b7b..091a42bd 100644 --- a/bertos/drv/sd.c +++ b/bertos/drv/sd.c @@ -278,10 +278,12 @@ static size_t sd_readDirect(struct KBlock *b, block_idx_t idx, void *buf, size_t #define SD_WRITE_SINGLEBLOCK 0x58 #define SD_DATA_ACCEPTED 0x05 -static int sd_writeBlock(KBlock *b, block_idx_t idx, const void *buf) +static size_t sd_writeDirect(KBlock *b, block_idx_t idx, const void *buf, size_t offset, size_t size) { Sd *sd = SD_CAST(b); KFile *fd = sd->ch; + ASSERT(offset == 0); + ASSERT(size == SD_DEFAULT_BLOCKLEN); LOG_INFO("writing block %ld\n", idx); if (sd->tranfer_len != SD_DEFAULT_BLOCKLEN) @@ -289,7 +291,7 @@ static int sd_writeBlock(KBlock *b, block_idx_t idx, const void *buf) if ((sd->r1 = sd_setBlockLen(sd, SD_DEFAULT_BLOCKLEN))) { LOG_ERR("setBlockLen failed: %04X\n", sd->r1); - return sd->r1; + return 0; } sd->tranfer_len = SD_DEFAULT_BLOCKLEN; } @@ -302,7 +304,7 @@ static int sd_writeBlock(KBlock *b, block_idx_t idx, const void *buf) { LOG_ERR("write single block failed: %04X\n", sd->r1); sd_select(sd, false); - return sd->r1; + return 0; } kfile_putc(SD_STARTTOKEN, fd); @@ -320,7 +322,7 @@ static int sd_writeBlock(KBlock *b, block_idx_t idx, const void *buf) return EOF; } - return 0; + return SD_DEFAULT_BLOCKLEN; } void sd_writeTest(Sd *sd) @@ -330,7 +332,7 @@ void sd_writeTest(Sd *sd) for (block_idx_t i = 0; i < sd->b.blk_cnt; i++) { - LOG_INFO("writing block %ld: %s\n", i, (sd_writeBlock(&sd->b, i, buf) == 0) ? "OK" : "FAIL"); + LOG_INFO("writing block %ld: %s\n", i, (sd_writeDirect(&sd->b, i, buf, 0, SD_DEFAULT_BLOCKLEN) == SD_DEFAULT_BLOCKLEN) ? "OK" : "FAIL"); } } @@ -351,7 +353,7 @@ bool sd_test(Sd *sd) kputchar('\n'); } - if (sd_writeBlock(&sd->b, 0, buf) != 0) + if (sd_writeDirect(&sd->b, 0, buf, 0, SD_DEFAULT_BLOCKLEN) != SD_DEFAULT_BLOCKLEN) return false; memset(buf, 0, sizeof(buf)); @@ -386,7 +388,7 @@ static int sd_clearerr(KBlock *b) static const KBlockVTable sd_unbuffered_vt = { .readDirect = sd_readDirect, - .writeBlock = sd_writeBlock, + .writeDirect = sd_writeDirect, .error = sd_error, .clearerr = sd_clearerr, @@ -395,7 +397,7 @@ static const KBlockVTable sd_unbuffered_vt = static const KBlockVTable sd_buffered_vt = { .readDirect = sd_readDirect, - .writeBlock = sd_writeBlock, + .writeDirect = sd_writeDirect, .readBuf = kblock_swReadBuf, .writeBuf = kblock_swWriteBuf, @@ -517,7 +519,7 @@ bool sd_initBuf(Sd *sd, KFile *ch) if (sd_blockInit(sd, ch)) { sd->b.priv.buf = sd_buf; - sd->b.priv.flags |= KB_BUFFERED; + sd->b.priv.flags |= KB_BUFFERED | KB_PARTIAL_WRITE; sd->b.priv.vt = &sd_buffered_vt; sd->b.priv.vt->load(&sd->b, 0); return true; diff --git a/bertos/fs/battfs.c b/bertos/fs/battfs.c index 4877fc62..f40d310d 100644 --- a/bertos/fs/battfs.c +++ b/bertos/fs/battfs.c @@ -366,7 +366,7 @@ bool battfs_mount(struct BattFsSuper *disk, struct KBlock *dev, pgcnt_t *page_ar pgoff_t filelen_table[BATTFS_MAX_FILES]; ASSERT(dev); - ASSERT(kblock_buffered(dev)); + ASSERT(kblock_partialWrite(dev)); disk->dev = dev; ASSERT(disk->dev->blk_size > BATTFS_HEADER_LEN); @@ -591,11 +591,12 @@ static size_t battfs_write(struct KFile *fd, const void *_buf, size_t size) /* * Renew page only if is not in cache. - * This avoids rewriting the same page continuously + * This avoids rewriting the same page continuously * if the user code keeps writing in the same portion * of the file. */ - if ((fdb->start[fdb->max_off] != kblock_cachedBlock(disk->dev)) || !kblock_cacheDirty(disk->dev)) + if (kblock_buffered(disk->dev) + && ((fdb->start[fdb->max_off] != kblock_cachedBlock(disk->dev)) || !kblock_cacheDirty(disk->dev))) { new_page = renewPage(disk, fdb->start[fdb->max_off]); if (new_page == NO_SPACE) @@ -709,7 +710,8 @@ static size_t battfs_write(struct KFile *fd, const void *_buf, size_t size) } /* Renew page only if is not in cache. */ - if ((fdb->start[fdb->max_off] != kblock_cachedBlock(disk->dev)) || !kblock_cacheDirty(disk->dev)) + if (kblock_buffered(disk->dev) + && ((fdb->start[fdb->max_off] != kblock_cachedBlock(disk->dev)) || !kblock_cacheDirty(disk->dev))) { new_page = renewPage(disk, fdb->start[pg_offset]); if (new_page == NO_SPACE) @@ -731,7 +733,7 @@ static size_t battfs_write(struct KFile *fd, const void *_buf, size_t size) LOG_INFO("Using cached block %d\n", fdb->start[pg_offset]); new_page = fdb->start[pg_offset]; } - + curr_hdr.seq++; } //LOG_INFO("writing to buffer for page %d, offset %d, size %d\n", disk->curr_page, addr_offset, wr_len); diff --git a/bertos/io/kblock.c b/bertos/io/kblock.c index 7355deed..69b5b159 100644 --- a/bertos/io/kblock.c +++ b/bertos/io/kblock.c @@ -51,11 +51,11 @@ INLINE size_t kblock_readDirect(struct KBlock *b, block_idx_t index, void *buf, return b->priv.vt->readDirect(b, b->priv.blk_start + index, buf, offset, size); } -INLINE int kblock_writeBlock(struct KBlock *b, block_idx_t index, const void *buf) +INLINE size_t kblock_writeDirect(struct KBlock *b, block_idx_t index, const void *buf, size_t offset, size_t size) { - KB_ASSERT_METHOD(b, writeBlock); + KB_ASSERT_METHOD(b, writeDirect); ASSERT(index < b->blk_cnt); - return b->priv.vt->writeBlock(b, b->priv.blk_start + index, buf); + return b->priv.vt->writeDirect(b, b->priv.blk_start + index, buf, offset, size); } INLINE size_t kblock_readBuf(struct KBlock *b, void *buf, size_t offset, size_t size) @@ -169,9 +169,11 @@ size_t kblock_write(struct KBlock *b, block_idx_t idx, const void *buf, size_t o } else { - ASSERT(offset == 0); - ASSERT(size == b->blk_size); - return (kblock_writeBlock(b, idx, buf) == 0) ? size : 0; + #ifdef _DEBUG + if (offset != 0 || size != b->blk_size) + ASSERT(kblock_partialWrite(b)); + #endif + return kblock_writeDirect(b, idx, buf, offset, size); } } @@ -180,14 +182,40 @@ int kblock_copy(struct KBlock *b, block_idx_t src, block_idx_t dest) ASSERT(b); ASSERT(src < b->blk_cnt); ASSERT(dest < b->blk_cnt); - ASSERT(kblock_buffered(b)); - if (!kblock_loadPage(b, src)) - return EOF; + if (kblock_buffered(b)) + { + if (!kblock_loadPage(b, src)) + return EOF; - b->priv.curr_blk = dest; - kblock_setDirty(b, true); - return 0; + b->priv.curr_blk = dest; + kblock_setDirty(b, true); + return 0; + } + else if (kblock_partialWrite(b)) + { + uint8_t buf[16]; + size_t blk_size = b->blk_size; + size_t offset = 0; + + while (blk_size) + { + size_t size = MIN(sizeof(buf), blk_size); + if (kblock_readDirect(b, src, buf, offset, size) != size) + return EOF; + if (kblock_writeDirect(b, dest, buf, offset, size) != size) + return EOF; + + blk_size -= size; + offset += size; + } + return 0; + } + else + { + ASSERT(0); + return EOF; + } } int kblock_swLoad(struct KBlock *b, block_idx_t index) @@ -197,7 +225,7 @@ int kblock_swLoad(struct KBlock *b, block_idx_t index) int kblock_swStore(struct KBlock *b, block_idx_t index) { - return kblock_writeBlock(b, index, b->priv.buf); + return (kblock_writeDirect(b, index, b->priv.buf, 0, b->blk_size) == b->blk_size) ? 0 : EOF; } size_t kblock_swReadBuf(struct KBlock *b, void *buf, size_t offset, size_t size) diff --git a/bertos/io/kblock.h b/bertos/io/kblock.h index 99135ab2..7775d7b8 100644 --- a/bertos/io/kblock.h +++ b/bertos/io/kblock.h @@ -57,8 +57,8 @@ struct KBlock; * * \{ */ -typedef size_t (* kblock_read_direct_t) (struct KBlock *b, block_idx_t index, void *buf, size_t offset, size_t size); -typedef int (* kblock_write_block_t) (struct KBlock *b, block_idx_t index, const void *buf); +typedef size_t (* kblock_read_direct_t) (struct KBlock *b, block_idx_t index, void *buf, size_t offset, size_t size); +typedef size_t (* kblock_write_direct_t) (struct KBlock *b, block_idx_t index, const void *buf, size_t offset, size_t size); typedef size_t (* kblock_read_t) (struct KBlock *b, void *buf, size_t offset, size_t size); typedef size_t (* kblock_write_t) (struct KBlock *b, const void *buf, size_t offset, size_t size); @@ -76,7 +76,7 @@ typedef int (* kblock_close_t) (struct KBlock *b); typedef struct KBlockVTable { kblock_read_direct_t readDirect; - kblock_write_block_t writeBlock; + kblock_write_direct_t writeDirect; kblock_read_t readBuf; kblock_write_t writeBuf; @@ -92,6 +92,7 @@ typedef struct KBlockVTable #define KB_BUFFERED BV(0) ///< Internal flag: true if the KBlock has a buffer #define KB_CACHE_DIRTY BV(1) ///< Internal flag: true if the cache is dirty +#define KB_PARTIAL_WRITE BV(2) ///< Internal flag: true if the device allows partial block write /** * KBlock private members. @@ -264,6 +265,18 @@ INLINE bool kblock_cacheDirty(struct KBlock *b) return kblock_buffered(b) && (b->priv.flags & KB_CACHE_DIRTY); } +/** + * \return true if the device \a b supports partial block write. That is, you + * can call kblock_write() with a size which is lesser than the block + * size. + * \param b KBlock device. + * \sa kblock_write(). + */ +INLINE bool kblock_partialWrite(struct KBlock *b) +{ + ASSERT(b); + return (b->priv.flags & KB_PARTIAL_WRITE); +} /** * Read data from the block device. @@ -297,9 +310,9 @@ size_t kblock_read(struct KBlock *b, block_idx_t idx, void *buf, size_t offset, * This function will write \a size bytes to block \a idx starting at * address \a offset inside the block. * - * \note Partial block writes are supported only if the device is opened in - * buffered mode. You can use kblock_buffered() to check if the device - * has an internal cache or not. + * \note Partial block writes are supported only on certain devices. + * You can use kblock_partialWrite() in order to check if the device + * has this feature or not. * * \note If the device is opened in buffered mode, this function will use * efficiently and trasparently the cache provided. @@ -314,7 +327,7 @@ size_t kblock_read(struct KBlock *b, block_idx_t idx, void *buf, size_t offset, * * \return the number of bytes written. * - * \sa kblock_read(), kblock_flush(), kblock_buffered(). + * \sa kblock_read(), kblock_flush(), kblock_buffered(), kblock_partialWrite(). */ size_t kblock_write(struct KBlock *b, block_idx_t idx, const void *buf, size_t offset, size_t size); @@ -336,7 +349,8 @@ int kblock_flush(struct KBlock *b); * * This function will copy the content of block \a src to block \a dest. * - * \note This function is available only on devices opened in buffered mode. + * \note This function is available only on devices which support partial + * block write or are opened in buffered mode. * * \param b KBlock device. * \param src source block number. diff --git a/bertos/io/kblock_file.c b/bertos/io/kblock_file.c index ae680815..cd18431d 100644 --- a/bertos/io/kblock_file.c +++ b/bertos/io/kblock_file.c @@ -79,13 +79,13 @@ static size_t kblockfile_writeBuf(struct KBlock *b, const void *buf, size_t offs return size; } -static int kblockfile_writeBlock(struct KBlock *b, block_idx_t index, const void *buf) +static size_t kblockfile_writeDirect(struct KBlock *b, block_idx_t index, const void *buf, size_t offset, size_t size) { KBlockFile *f = KBLOCKFILE_CAST(b); ASSERT(buf); ASSERT(index < b->blk_cnt); - fseek(f->fp, index * b->blk_size, SEEK_SET); - return (fwrite(f->b.priv.buf, 1, b->blk_size, f->fp) == b->blk_size) ? 0 : EOF; + fseek(f->fp, index * b->blk_size + offset, SEEK_SET); + return fwrite(buf, 1, size, f->fp); } static int kblockfile_error(struct KBlock *b) @@ -119,7 +119,7 @@ static const KBlockVTable kblockfile_hwbuffered_vt = .writeBuf = kblockfile_writeBuf, .load = kblockfile_load, .store = kblockfile_store, - + .error = kblockfile_error, .clearerr = kblockfile_claererr, .close = kblockfile_close, @@ -128,13 +128,13 @@ static const KBlockVTable kblockfile_hwbuffered_vt = static const KBlockVTable kblockfile_swbuffered_vt = { .readDirect = kblockfile_readDirect, - .writeBlock =kblockfile_writeBlock, - + .writeDirect =kblockfile_writeDirect, + .readBuf = kblock_swReadBuf, .writeBuf = kblock_swWriteBuf, .load = kblock_swLoad, .store = kblock_swStore, - + .error = kblockfile_error, .clearerr = kblockfile_claererr, .close = kblockfile_close, @@ -143,7 +143,7 @@ static const KBlockVTable kblockfile_swbuffered_vt = static const KBlockVTable kblockfile_unbuffered_vt = { .readDirect = kblockfile_readDirect, - .writeBlock =kblockfile_writeBlock, + .writeDirect =kblockfile_writeDirect, .error = kblockfile_error, .clearerr = kblockfile_claererr, @@ -165,7 +165,8 @@ void kblockfile_init(KBlockFile *f, FILE *fp, bool hwbuf, void *buf, size_t bloc f->fp = fp; f->b.blk_size = block_size; f->b.blk_cnt = block_count; - + + f->b.priv.flags |= KB_PARTIAL_WRITE; if (buf) { f->b.priv.flags |= KB_BUFFERED; diff --git a/bertos/io/kblock_ram.c b/bertos/io/kblock_ram.c index eff9675f..e3780d7d 100644 --- a/bertos/io/kblock_ram.c +++ b/bertos/io/kblock_ram.c @@ -75,14 +75,14 @@ static size_t kblockram_writeBuf(struct KBlock *b, const void *buf, size_t offse return size; } -static int kblockram_writeBlock(struct KBlock *b, block_idx_t index, const void *buf) +static size_t kblockram_writeDirect(struct KBlock *b, block_idx_t index, const void *buf, size_t offset, size_t size) { KBlockRam *r = KBLOCKRAM_CAST(b); ASSERT(buf); ASSERT(index < b->blk_cnt); - memcpy(r->membuf + index * r->b.blk_size, buf, r->b.blk_size); - return 0; + memcpy(r->membuf + index * r->b.blk_size + offset, buf, size); + return size; } static int kblockram_dummy(UNUSED_ARG(struct KBlock *,b)) @@ -93,12 +93,12 @@ static int kblockram_dummy(UNUSED_ARG(struct KBlock *,b)) static const KBlockVTable kblockram_hwbuffered_vt = { .readDirect = kblockram_readDirect, - + .readBuf = kblockram_readBuf, .writeBuf = kblockram_writeBuf, .load = kblockram_load, .store = kblockram_store, - + .error = kblockram_dummy, .clearerr = kblockram_dummy, .close = kblockram_dummy, @@ -108,13 +108,13 @@ static const KBlockVTable kblockram_hwbuffered_vt = static const KBlockVTable kblockram_swbuffered_vt = { .readDirect = kblockram_readDirect, - .writeBlock = kblockram_writeBlock, - + .writeDirect = kblockram_writeDirect, + .readBuf = kblock_swReadBuf, .writeBuf = kblock_swWriteBuf, .load = kblock_swLoad, .store = kblock_swStore, - + .error = kblockram_dummy, .clearerr = kblockram_dummy, .close = kblockram_dummy, @@ -123,7 +123,7 @@ static const KBlockVTable kblockram_swbuffered_vt = static const KBlockVTable kblockram_unbuffered_vt = { .readDirect = kblockram_readDirect, - .writeBlock = kblockram_writeBlock, + .writeDirect = kblockram_writeDirect, .error = kblockram_dummy, .clearerr = kblockram_dummy, @@ -140,7 +140,8 @@ void kblockram_init(KBlockRam *ram, void *buf, size_t size, size_t block_size, b DB(ram->b.priv.type = KBT_KBLOCKRAM); ram->b.blk_size = block_size; - + ram->b.priv.flags |= KB_PARTIAL_WRITE; + if (buffered) { ram->b.priv.flags |= KB_BUFFERED; @@ -148,12 +149,12 @@ void kblockram_init(KBlockRam *ram, void *buf, size_t size, size_t block_size, b ram->b.priv.buf = buf; // First page used as page buffer ram->membuf = (uint8_t *)buf + block_size; - + if (hwbuffered) ram->b.priv.vt = &kblockram_hwbuffered_vt; else ram->b.priv.vt = &kblockram_swbuffered_vt; - + kblockram_load(&ram->b, 0); } else