From 5705f7021748a69d84d6567e68e8851dab551464 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Tue, 25 Sep 2007 12:35:59 +0200 Subject: Introduce rq_for_each_segment replacing rq_for_each_bio Every usage of rq_for_each_bio wraps a usage of bio_for_each_segment, so these can be combined into rq_for_each_segment. We define "struct req_iterator" to hold the 'bio' and 'index' that are needed for the double iteration. Signed-off-by: Neil Brown Various compile fixes by me... Signed-off-by: Jens Axboe --- drivers/block/floppy.c | 81 ++++++++++++++++++++---------------------- drivers/block/lguest_blk.c | 10 +++--- drivers/block/nbd.c | 22 +++++------- drivers/block/ps3disk.c | 31 ++++++++-------- drivers/block/xen-blkfront.c | 7 ++-- drivers/ide/ide-floppy.c | 16 ++++----- drivers/s390/block/dasd_diag.c | 11 ++---- drivers/s390/block/dasd_eckd.c | 15 ++++---- drivers/s390/block/dasd_fba.c | 15 ++++---- drivers/s390/char/tape_34xx.c | 15 +++----- drivers/s390/char/tape_3590.c | 16 ++++----- 11 files changed, 101 insertions(+), 138 deletions(-) (limited to 'drivers') diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c index 085b7794fb3..f0a86e201b4 100644 --- a/drivers/block/floppy.c +++ b/drivers/block/floppy.c @@ -2437,22 +2437,19 @@ static void rw_interrupt(void) /* Compute maximal contiguous buffer size. */ static int buffer_chain_size(void) { - struct bio *bio; struct bio_vec *bv; - int size, i; + int size; + struct req_iterator iter; char *base; base = bio_data(current_req->bio); size = 0; - rq_for_each_bio(bio, current_req) { - bio_for_each_segment(bv, bio, i) { - if (page_address(bv->bv_page) + bv->bv_offset != - base + size) - break; + rq_for_each_segment(bv, current_req, iter) { + if (page_address(bv->bv_page) + bv->bv_offset != base + size) + break; - size += bv->bv_len; - } + size += bv->bv_len; } return size >> 9; @@ -2479,9 +2476,9 @@ static void copy_buffer(int ssize, int max_sector, int max_sector_2) { int remaining; /* number of transferred 512-byte sectors */ struct bio_vec *bv; - struct bio *bio; char *buffer, *dma_buffer; - int size, i; + int size; + struct req_iterator iter; max_sector = transfer_size(ssize, min(max_sector, max_sector_2), @@ -2514,43 +2511,41 @@ static void copy_buffer(int ssize, int max_sector, int max_sector_2) size = current_req->current_nr_sectors << 9; - rq_for_each_bio(bio, current_req) { - bio_for_each_segment(bv, bio, i) { - if (!remaining) - break; + rq_for_each_segment(bv, current_req, iter) { + if (!remaining) + break; - size = bv->bv_len; - SUPBOUND(size, remaining); + size = bv->bv_len; + SUPBOUND(size, remaining); - buffer = page_address(bv->bv_page) + bv->bv_offset; + buffer = page_address(bv->bv_page) + bv->bv_offset; #ifdef FLOPPY_SANITY_CHECK - if (dma_buffer + size > - floppy_track_buffer + (max_buffer_sectors << 10) || - dma_buffer < floppy_track_buffer) { - DPRINT("buffer overrun in copy buffer %d\n", - (int)((floppy_track_buffer - - dma_buffer) >> 9)); - printk("fsector_t=%d buffer_min=%d\n", - fsector_t, buffer_min); - printk("current_count_sectors=%ld\n", - current_count_sectors); - if (CT(COMMAND) == FD_READ) - printk("read\n"); - if (CT(COMMAND) == FD_WRITE) - printk("write\n"); - break; - } - if (((unsigned long)buffer) % 512) - DPRINT("%p buffer not aligned\n", buffer); -#endif + if (dma_buffer + size > + floppy_track_buffer + (max_buffer_sectors << 10) || + dma_buffer < floppy_track_buffer) { + DPRINT("buffer overrun in copy buffer %d\n", + (int)((floppy_track_buffer - + dma_buffer) >> 9)); + printk("fsector_t=%d buffer_min=%d\n", + fsector_t, buffer_min); + printk("current_count_sectors=%ld\n", + current_count_sectors); if (CT(COMMAND) == FD_READ) - memcpy(buffer, dma_buffer, size); - else - memcpy(dma_buffer, buffer, size); - - remaining -= size; - dma_buffer += size; + printk("read\n"); + if (CT(COMMAND) == FD_WRITE) + printk("write\n"); + break; } + if (((unsigned long)buffer) % 512) + DPRINT("%p buffer not aligned\n", buffer); +#endif + if (CT(COMMAND) == FD_READ) + memcpy(buffer, dma_buffer, size); + else + memcpy(dma_buffer, buffer, size); + + remaining -= size; + dma_buffer += size; } #ifdef FLOPPY_SANITY_CHECK if (remaining) { diff --git a/drivers/block/lguest_blk.c b/drivers/block/lguest_blk.c index 160cf14431a..1e838ae60a6 100644 --- a/drivers/block/lguest_blk.c +++ b/drivers/block/lguest_blk.c @@ -142,12 +142,11 @@ static irqreturn_t lgb_irq(int irq, void *_bd) * return the total length. */ static unsigned int req_to_dma(struct request *req, struct lguest_dma *dma) { - unsigned int i = 0, idx, len = 0; - struct bio *bio; + unsigned int i = 0, len = 0; + struct req_iterator iter; + struct bio_vec *bvec; - rq_for_each_bio(bio, req) { - struct bio_vec *bvec; - bio_for_each_segment(bvec, bio, idx) { + rq_for_each_segment(bvec, req, iter) { /* We told the block layer not to give us too many. */ BUG_ON(i == LGUEST_MAX_DMA_SECTIONS); /* If we had a zero-length segment, it would look like @@ -160,7 +159,6 @@ static unsigned int req_to_dma(struct request *req, struct lguest_dma *dma) dma->len[i] = bvec->bv_len; len += bvec->bv_len; i++; - } } /* If the array isn't full, we mark the end with a 0 length */ if (i < LGUEST_MAX_DMA_SECTIONS) diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c index be92c658f06..228b2ff577a 100644 --- a/drivers/block/nbd.c +++ b/drivers/block/nbd.c @@ -180,7 +180,7 @@ static inline int sock_send_bvec(struct socket *sock, struct bio_vec *bvec, static int nbd_send_req(struct nbd_device *lo, struct request *req) { - int result, i, flags; + int result, flags; struct nbd_request request; unsigned long size = req->nr_sectors << 9; struct socket *sock = lo->sock; @@ -205,16 +205,15 @@ static int nbd_send_req(struct nbd_device *lo, struct request *req) } if (nbd_cmd(req) == NBD_CMD_WRITE) { - struct bio *bio; + struct req_iterator iter; + struct bio_vec *bvec; /* * we are really probing at internals to determine * whether to set MSG_MORE or not... */ - rq_for_each_bio(bio, req) { - struct bio_vec *bvec; - bio_for_each_segment(bvec, bio, i) { + rq_for_each_segment(bvec, req, iter) { flags = 0; - if ((i < (bio->bi_vcnt - 1)) || bio->bi_next) + if (!rq_iter_last(req, iter)) flags = MSG_MORE; dprintk(DBG_TX, "%s: request %p: sending %d bytes data\n", lo->disk->disk_name, req, @@ -226,7 +225,6 @@ static int nbd_send_req(struct nbd_device *lo, struct request *req) result); goto error_out; } - } } } return 0; @@ -321,11 +319,10 @@ static struct request *nbd_read_stat(struct nbd_device *lo) dprintk(DBG_RX, "%s: request %p: got reply\n", lo->disk->disk_name, req); if (nbd_cmd(req) == NBD_CMD_READ) { - int i; - struct bio *bio; - rq_for_each_bio(bio, req) { - struct bio_vec *bvec; - bio_for_each_segment(bvec, bio, i) { + struct req_iterator iter; + struct bio_vec *bvec; + + rq_for_each_segment(bvec, req, iter) { result = sock_recv_bvec(sock, bvec); if (result <= 0) { printk(KERN_ERR "%s: Receive data failed (result %d)\n", @@ -336,7 +333,6 @@ static struct request *nbd_read_stat(struct nbd_device *lo) } dprintk(DBG_RX, "%s: request %p: got %d bytes data\n", lo->disk->disk_name, req, bvec->bv_len); - } } } return req; diff --git a/drivers/block/ps3disk.c b/drivers/block/ps3disk.c index aa8b890c80d..8953e7ce001 100644 --- a/drivers/block/ps3disk.c +++ b/drivers/block/ps3disk.c @@ -91,30 +91,30 @@ static void ps3disk_scatter_gather(struct ps3_storage_device *dev, struct request *req, int gather) { unsigned int offset = 0; - struct bio *bio; - sector_t sector; + struct req_iterator iter; struct bio_vec *bvec; - unsigned int i = 0, j; + unsigned int i = 0; size_t size; void *buf; - rq_for_each_bio(bio, req) { - sector = bio->bi_sector; + rq_for_each_segment(bvec, req, iter) { + unsigned long flags; dev_dbg(&dev->sbd.core, "%s:%u: bio %u: %u segs %u sectors from %lu\n", - __func__, __LINE__, i, bio_segments(bio), - bio_sectors(bio), sector); - bio_for_each_segment(bvec, bio, j) { + __func__, __LINE__, i, bio_segments(iter.bio), + bio_sectors(iter.bio), + (unsigned long)iter.bio->bi_sector); + size = bvec->bv_len; - buf = __bio_kmap_atomic(bio, j, KM_IRQ0); + buf = bvec_kmap_irq(bvec, &flags); if (gather) memcpy(dev->bounce_buf+offset, buf, size); else memcpy(buf, dev->bounce_buf+offset, size); offset += size; - flush_kernel_dcache_page(bio_iovec_idx(bio, j)->bv_page); - __bio_kunmap_atomic(bio, KM_IRQ0); - } + flush_kernel_dcache_page(bvec->bv_page); + bvec_kunmap_irq(bvec, &flags); + i++; } } @@ -130,12 +130,13 @@ static int ps3disk_submit_request_sg(struct ps3_storage_device *dev, #ifdef DEBUG unsigned int n = 0; - struct bio *bio; + struct bio_vec *bv; + struct req_iterator iter; - rq_for_each_bio(bio, req) + rq_for_each_segment(bv, req, iter) n++; dev_dbg(&dev->sbd.core, - "%s:%u: %s req has %u bios for %lu sectors %lu hard sectors\n", + "%s:%u: %s req has %u bvecs for %lu sectors %lu hard sectors\n", __func__, __LINE__, op, n, req->nr_sectors, req->hard_nr_sectors); #endif diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c index 964e51634f2..6af250113c2 100644 --- a/drivers/block/xen-blkfront.c +++ b/drivers/block/xen-blkfront.c @@ -150,9 +150,8 @@ static int blkif_queue_request(struct request *req) struct blkfront_info *info = req->rq_disk->private_data; unsigned long buffer_mfn; struct blkif_request *ring_req; - struct bio *bio; + struct req_iterator iter; struct bio_vec *bvec; - int idx; unsigned long id; unsigned int fsect, lsect; int ref; @@ -186,8 +185,7 @@ static int blkif_queue_request(struct request *req) ring_req->operation = BLKIF_OP_WRITE_BARRIER; ring_req->nr_segments = 0; - rq_for_each_bio (bio, req) { - bio_for_each_segment (bvec, bio, idx) { + rq_for_each_segment(bvec, req, iter) { BUG_ON(ring_req->nr_segments == BLKIF_MAX_SEGMENTS_PER_REQUEST); buffer_mfn = pfn_to_mfn(page_to_pfn(bvec->bv_page)); @@ -213,7 +211,6 @@ static int blkif_queue_request(struct request *req) .last_sect = lsect }; ring_req->nr_segments++; - } } info->ring.req_prod_pvt++; diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c index ae8e1a64b8a..a775450d7a3 100644 --- a/drivers/ide/ide-floppy.c +++ b/drivers/ide/ide-floppy.c @@ -606,13 +606,12 @@ static void idefloppy_input_buffers (ide_drive_t *drive, idefloppy_pc_t *pc, uns { struct request *rq = pc->rq; struct bio_vec *bvec; - struct bio *bio; + struct req_iterator iter; unsigned long flags; char *data; - int count, i, done = 0; + int count, done = 0; - rq_for_each_bio(bio, rq) { - bio_for_each_segment(bvec, bio, i) { + rq_for_each_segment(bvec, rq, iter) { if (!bcount) break; @@ -625,7 +624,6 @@ static void idefloppy_input_buffers (ide_drive_t *drive, idefloppy_pc_t *pc, uns bcount -= count; pc->b_count += count; done += count; - } } idefloppy_do_end_request(drive, 1, done >> 9); @@ -639,14 +637,13 @@ static void idefloppy_input_buffers (ide_drive_t *drive, idefloppy_pc_t *pc, uns static void idefloppy_output_buffers (ide_drive_t *drive, idefloppy_pc_t *pc, unsigned int bcount) { struct request *rq = pc->rq; - struct bio *bio; + struct req_iterator iter; struct bio_vec *bvec; unsigned long flags; - int count, i, done = 0; + int count, done = 0; char *data; - rq_for_each_bio(bio, rq) { - bio_for_each_segment(bvec, bio, i) { + rq_for_each_segment(bvec, rq, iter) { if (!bcount) break; @@ -659,7 +656,6 @@ static void idefloppy_output_buffers (ide_drive_t *drive, idefloppy_pc_t *pc, un bcount -= count; pc->b_count += count; done += count; - } } idefloppy_do_end_request(drive, 1, done >> 9); diff --git a/drivers/s390/block/dasd_diag.c b/drivers/s390/block/dasd_diag.c index d32c60dbdd8..6bb9676f203 100644 --- a/drivers/s390/block/dasd_diag.c +++ b/drivers/s390/block/dasd_diag.c @@ -472,14 +472,13 @@ dasd_diag_build_cp(struct dasd_device * device, struct request *req) struct dasd_ccw_req *cqr; struct dasd_diag_req *dreq; struct dasd_diag_bio *dbio; - struct bio *bio; + struct req_iterator iter; struct bio_vec *bv; char *dst; unsigned int count, datasize; sector_t recid, first_rec, last_rec; unsigned int blksize, off; unsigned char rw_cmd; - int i; if (rq_data_dir(req) == READ) rw_cmd = MDSK_READ_REQ; @@ -493,13 +492,11 @@ dasd_diag_build_cp(struct dasd_device * device, struct request *req) last_rec = (req->sector + req->nr_sectors - 1) >> device->s2b_shift; /* Check struct bio and count the number of blocks for the request. */ count = 0; - rq_for_each_bio(bio, req) { - bio_for_each_segment(bv, bio, i) { + rq_for_each_segment(bv, req, iter) { if (bv->bv_len & (blksize - 1)) /* Fba can only do full blocks. */ return ERR_PTR(-EINVAL); count += bv->bv_len >> (device->s2b_shift + 9); - } } /* Paranoia. */ if (count != last_rec - first_rec + 1) @@ -516,8 +513,7 @@ dasd_diag_build_cp(struct dasd_device * device, struct request *req) dreq->block_count = count; dbio = dreq->bio; recid = first_rec; - rq_for_each_bio(bio, req) { - bio_for_each_segment(bv, bio, i) { + rq_for_each_segment(bv, req, iter) { dst = page_address(bv->bv_page) + bv->bv_offset; for (off = 0; off < bv->bv_len; off += blksize) { memset(dbio, 0, sizeof (struct dasd_diag_bio)); @@ -528,7 +524,6 @@ dasd_diag_build_cp(struct dasd_device * device, struct request *req) dst += blksize; recid++; } - } } cqr->retries = DIAG_MAX_RETRIES; cqr->buildclk = get_clock(); diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c index ea63ba7828f..36ba4584987 100644 --- a/drivers/s390/block/dasd_eckd.c +++ b/drivers/s390/block/dasd_eckd.c @@ -1176,7 +1176,7 @@ dasd_eckd_build_cp(struct dasd_device * device, struct request *req) struct LO_eckd_data *LO_data; struct dasd_ccw_req *cqr; struct ccw1 *ccw; - struct bio *bio; + struct req_iterator iter; struct bio_vec *bv; char *dst; unsigned int blksize, blk_per_trk, off; @@ -1185,7 +1185,6 @@ dasd_eckd_build_cp(struct dasd_device * device, struct request *req) sector_t first_trk, last_trk; unsigned int first_offs, last_offs; unsigned char cmd, rcmd; - int i; private = (struct dasd_eckd_private *) device->private; if (rq_data_dir(req) == READ) @@ -1206,8 +1205,7 @@ dasd_eckd_build_cp(struct dasd_device * device, struct request *req) /* Check struct bio and count the number of blocks for the request. */ count = 0; cidaw = 0; - rq_for_each_bio(bio, req) { - bio_for_each_segment(bv, bio, i) { + rq_for_each_segment(bv, req, iter) { if (bv->bv_len & (blksize - 1)) /* Eckd can only do full blocks. */ return ERR_PTR(-EINVAL); @@ -1217,7 +1215,6 @@ dasd_eckd_build_cp(struct dasd_device * device, struct request *req) bv->bv_len)) cidaw += bv->bv_len >> (device->s2b_shift + 9); #endif - } } /* Paranoia. */ if (count != last_rec - first_rec + 1) @@ -1257,7 +1254,7 @@ dasd_eckd_build_cp(struct dasd_device * device, struct request *req) locate_record(ccw++, LO_data++, first_trk, first_offs + 1, last_rec - recid + 1, cmd, device, blksize); } - rq_for_each_bio(bio, req) bio_for_each_segment(bv, bio, i) { + rq_for_each_segment(bv, req, iter) { dst = page_address(bv->bv_page) + bv->bv_offset; if (dasd_page_cache) { char *copy = kmem_cache_alloc(dasd_page_cache, @@ -1328,12 +1325,12 @@ dasd_eckd_free_cp(struct dasd_ccw_req *cqr, struct request *req) { struct dasd_eckd_private *private; struct ccw1 *ccw; - struct bio *bio; + struct req_iterator iter; struct bio_vec *bv; char *dst, *cda; unsigned int blksize, blk_per_trk, off; sector_t recid; - int i, status; + int status; if (!dasd_page_cache) goto out; @@ -1346,7 +1343,7 @@ dasd_eckd_free_cp(struct dasd_ccw_req *cqr, struct request *req) ccw++; if (private->uses_cdl == 0 || recid > 2*blk_per_trk) ccw++; - rq_for_each_bio(bio, req) bio_for_each_segment(bv, bio, i) { + rq_for_each_segment(bv, req, iter) { dst = page_address(bv->bv_page) + bv->bv_offset; for (off = 0; off < bv->bv_len; off += blksize) { /* Skip locate record. */ diff --git a/drivers/s390/block/dasd_fba.c b/drivers/s390/block/dasd_fba.c index da16ead8aff..119b8d2d5f1 100644 --- a/drivers/s390/block/dasd_fba.c +++ b/drivers/s390/block/dasd_fba.c @@ -234,14 +234,13 @@ dasd_fba_build_cp(struct dasd_device * device, struct request *req) struct LO_fba_data *LO_data; struct dasd_ccw_req *cqr; struct ccw1 *ccw; - struct bio *bio; + struct req_iterator iter; struct bio_vec *bv; char *dst; int count, cidaw, cplength, datasize; sector_t recid, first_rec, last_rec; unsigned int blksize, off; unsigned char cmd; - int i; private = (struct dasd_fba_private *) device->private; if (rq_data_dir(req) == READ) { @@ -257,8 +256,7 @@ dasd_fba_build_cp(struct dasd_device * device, struct request *req) /* Check struct bio and count the number of blocks for the request. */ count = 0; cidaw = 0; - rq_for_each_bio(bio, req) { - bio_for_each_segment(bv, bio, i) { + rq_for_each_segment(bv, req, iter) { if (bv->bv_len & (blksize - 1)) /* Fba can only do full blocks. */ return ERR_PTR(-EINVAL); @@ -268,7 +266,6 @@ dasd_fba_build_cp(struct dasd_device * device, struct request *req) bv->bv_len)) cidaw += bv->bv_len / blksize; #endif - } } /* Paranoia. */ if (count != last_rec - first_rec + 1) @@ -304,7 +301,7 @@ dasd_fba_build_cp(struct dasd_device * device, struct request *req) locate_record(ccw++, LO_data++, rq_data_dir(req), 0, count); } recid = first_rec; - rq_for_each_bio(bio, req) bio_for_each_segment(bv, bio, i) { + rq_for_each_segment(bv, req, iter) { dst = page_address(bv->bv_page) + bv->bv_offset; if (dasd_page_cache) { char *copy = kmem_cache_alloc(dasd_page_cache, @@ -359,11 +356,11 @@ dasd_fba_free_cp(struct dasd_ccw_req *cqr, struct request *req) { struct dasd_fba_private *private; struct ccw1 *ccw; - struct bio *bio; + struct req_iterator iter; struct bio_vec *bv; char *dst, *cda; unsigned int blksize, off; - int i, status; + int status; if (!dasd_page_cache) goto out; @@ -374,7 +371,7 @@ dasd_fba_free_cp(struct dasd_ccw_req *cqr, struct request *req) ccw++; if (private->rdc_data.mode.bits.data_chain != 0) ccw++; - rq_for_each_bio(bio, req) bio_for_each_segment(bv, bio, i) { + rq_for_each_segment(bv, req, iter) { dst = page_address(bv->bv_page) + bv->bv_offset; for (off = 0; off < bv->bv_len; off += blksize) { /* Skip locate record. */ diff --git a/drivers/s390/char/tape_34xx.c b/drivers/s390/char/tape_34xx.c index 80e7a537e7d..ea3e6a345c8 100644 --- a/drivers/s390/char/tape_34xx.c +++ b/drivers/s390/char/tape_34xx.c @@ -1134,21 +1134,18 @@ tape_34xx_bread(struct tape_device *device, struct request *req) { struct tape_request *request; struct ccw1 *ccw; - int count = 0, i; + int count = 0; unsigned off; char *dst; struct bio_vec *bv; - struct bio *bio; + struct req_iterator iter; struct tape_34xx_block_id * start_block; DBF_EVENT(6, "xBREDid:"); /* Count the number of blocks for the request. */ - rq_for_each_bio(bio, req) { - bio_for_each_segment(bv, bio, i) { - count += bv->bv_len >> (TAPEBLOCK_HSEC_S2B + 9); - } - } + rq_for_each_segment(bv, req, iter) + count += bv->bv_len >> (TAPEBLOCK_HSEC_S2B + 9); /* Allocate the ccw request. */ request = tape_alloc_request(3+count+1, 8); @@ -1175,8 +1172,7 @@ tape_34xx_bread(struct tape_device *device, struct request *req) ccw = tape_ccw_cc(ccw, NOP, 0, NULL); ccw = tape_ccw_cc(ccw, NOP, 0, NULL); - rq_for_each_bio(bio, req) { - bio_for_each_segment(bv, bio, i) { + rq_for_each_segment(bv, req, iter) { dst = kmap(bv->bv_page) + bv->bv_offset; for (off = 0; off < bv->bv_len; off += TAPEBLOCK_HSEC_SIZE) { @@ -1187,7 +1183,6 @@ tape_34xx_bread(struct tape_device *device, struct request *req) ccw++; dst += TAPEBLOCK_HSEC_SIZE; } - } } ccw = tape_ccw_end(ccw, NOP, 0, NULL); diff --git a/drivers/s390/char/tape_3590.c b/drivers/s390/char/tape_3590.c index 7e2b2ab4926..b16ad7a7631 100644 --- a/drivers/s390/char/tape_3590.c +++ b/drivers/s390/char/tape_3590.c @@ -623,21 +623,19 @@ tape_3590_bread(struct tape_device *device, struct request *req) { struct tape_request *request; struct ccw1 *ccw; - int count = 0, start_block, i; + int count = 0, start_block; unsigned off; char *dst; struct bio_vec *bv; - struct bio *bio; + struct req_iterator iter; DBF_EVENT(6, "xBREDid:"); start_block = req->sector >> TAPEBLOCK_HSEC_S2B; DBF_EVENT(6, "start_block = %i\n", start_block); - rq_for_each_bio(bio, req) { - bio_for_each_segment(bv, bio, i) { - count += bv->bv_len >> (TAPEBLOCK_HSEC_S2B + 9); - } - } + rq_for_each_segment(bv, req, iter) + count += bv->bv_len >> (TAPEBLOCK_HSEC_S2B + 9); + request = tape_alloc_request(2 + count + 1, 4); if (IS_ERR(request)) return request; @@ -653,8 +651,7 @@ tape_3590_bread(struct tape_device *device, struct request *req) */ ccw = tape_ccw_cc(ccw, NOP, 0, NULL); - rq_for_each_bio(bio, req) { - bio_for_each_segment(bv, bio, i) { + rq_for_each_segment(bv, req, iter) { dst = page_address(bv->bv_page) + bv->bv_offset; for (off = 0; off < bv->bv_len; off += TAPEBLOCK_HSEC_SIZE) { @@ -667,7 +664,6 @@ tape_3590_bread(struct tape_device *device, struct request *req) } if (off > bv->bv_len) BUG(); - } } ccw = tape_ccw_end(ccw, NOP, 0, NULL); DBF_EVENT(6, "xBREDccwg\n"); -- cgit v1.2.3 From eea9befaccb8d43ce89585d612159761c978f056 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Thu, 16 Aug 2007 13:31:26 +0200 Subject: Fix various abuse of bio fields in umem.c umem.c: advances bi_idx and bi_sector to track where it is up to. But it is only ever doing this on one bio, so the updated fields can easily be kept elsewhere (current_*). updates bi_size, but never uses the updated values, so this isn't needed. reuses bi_phys_segments to count how many iovecs have been completely. As the completion happens sequentiually, we can store this information outside the bio too. Signed-off-by: Neil Brown diff .prev/drivers/block/umem.c ./drivers/block/umem.c Signed-off-by: Jens Axboe --- drivers/block/umem.c | 38 +++++++++++++++++++++++++------------- 1 file changed, 25 insertions(+), 13 deletions(-) (limited to 'drivers') diff --git a/drivers/block/umem.c b/drivers/block/umem.c index 6b7c02d6360..c378e285d70 100644 --- a/drivers/block/umem.c +++ b/drivers/block/umem.c @@ -113,6 +113,8 @@ struct cardinfo { * have been written */ struct bio *bio, *currentbio, **biotail; + int current_idx; + sector_t current_sector; struct request_queue *queue; @@ -121,6 +123,7 @@ struct cardinfo { struct mm_dma_desc *desc; int cnt, headcnt; struct bio *bio, **biotail; + int idx; } mm_pages[2]; #define DESC_PER_PAGE ((PAGE_SIZE*2)/sizeof(struct mm_dma_desc)) @@ -380,12 +383,16 @@ static int add_bio(struct cardinfo *card) dma_addr_t dma_handle; int offset; struct bio *bio; + struct bio_vec *vec; + int idx; int rw; int len; bio = card->currentbio; if (!bio && card->bio) { card->currentbio = card->bio; + card->current_idx = card->bio->bi_idx; + card->current_sector = card->bio->bi_sector; card->bio = card->bio->bi_next; if (card->bio == NULL) card->biotail = &card->bio; @@ -394,15 +401,17 @@ static int add_bio(struct cardinfo *card) } if (!bio) return 0; + idx = card->current_idx; rw = bio_rw(bio); if (card->mm_pages[card->Ready].cnt >= DESC_PER_PAGE) return 0; - len = bio_iovec(bio)->bv_len; - dma_handle = pci_map_page(card->dev, - bio_page(bio), - bio_offset(bio), + vec = bio_iovec_idx(bio, idx); + len = vec->bv_len; + dma_handle = pci_map_page(card->dev, + vec->bv_page, + vec->bv_offset, len, (rw==READ) ? PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE); @@ -410,6 +419,8 @@ static int add_bio(struct cardinfo *card) p = &card->mm_pages[card->Ready]; desc = &p->desc[p->cnt]; p->cnt++; + if (p->bio == NULL) + p->idx = idx; if ((p->biotail) != &bio->bi_next) { *(p->biotail) = bio; p->biotail = &(bio->bi_next); @@ -419,7 +430,7 @@ static int add_bio(struct cardinfo *card) desc->data_dma_handle = dma_handle; desc->pci_addr = cpu_to_le64((u64)desc->data_dma_handle); - desc->local_addr= cpu_to_le64(bio->bi_sector << 9); + desc->local_addr = cpu_to_le64(card->current_sector << 9); desc->transfer_size = cpu_to_le32(len); offset = ( ((char*)&desc->sem_control_bits) - ((char*)p->desc)); desc->sem_addr = cpu_to_le64((u64)(p->page_dma+offset)); @@ -435,10 +446,10 @@ static int add_bio(struct cardinfo *card) desc->control_bits |= cpu_to_le32(DMASCR_TRANSFER_READ); desc->sem_control_bits = desc->control_bits; - bio->bi_sector += (len>>9); - bio->bi_size -= len; - bio->bi_idx++; - if (bio->bi_idx >= bio->bi_vcnt) + card->current_sector += (len >> 9); + idx++; + card->current_idx = idx; + if (idx >= bio->bi_vcnt) card->currentbio = NULL; return 1; @@ -474,10 +485,12 @@ static void process_page(unsigned long data) last=1; } page->headcnt++; - idx = bio->bi_phys_segments; - bio->bi_phys_segments++; - if (bio->bi_phys_segments >= bio->bi_vcnt) + idx = page->idx; + page->idx++; + if (page->idx >= bio->bi_vcnt) { page->bio = bio->bi_next; + page->idx = page->bio->bi_idx; + } pci_unmap_page(card->dev, desc->data_dma_handle, bio_iovec_idx(bio,idx)->bv_len, @@ -547,7 +560,6 @@ static int mm_make_request(struct request_queue *q, struct bio *bio) pr_debug("mm_make_request %llu %u\n", (unsigned long long)bio->bi_sector, bio->bi_size); - bio->bi_phys_segments = bio->bi_idx; /* count of completed segments*/ spin_lock_irq(&card->lock); *card->biotail = bio; bio->bi_next = NULL; -- cgit v1.2.3 From 3001ca77128273cc5634d79f5306ce2e5a14ec41 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Thu, 16 Aug 2007 13:31:27 +0200 Subject: New function blk_req_append_bio ll_back_merge_fn is currently exported to SCSI where is it used, together with blk_rq_bio_prep, in exactly the same way these functions are used in __blk_rq_map_user. So move the common code into a new function (blk_rq_append_bio), and don't export ll_back_merge_fn any longer. Signed-off-by: Neil Brown diff .prev/block/ll_rw_blk.c ./block/ll_rw_blk.c Signed-off-by: Jens Axboe --- drivers/scsi/scsi_lib.c | 11 +---------- 1 file changed, 1 insertion(+), 10 deletions(-) (limited to 'drivers') diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index a417a6ff9f9..59b39853029 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -263,16 +263,7 @@ static int scsi_merge_bio(struct request *rq, struct bio *bio) bio->bi_rw |= (1 << BIO_RW); blk_queue_bounce(q, &bio); - if (!rq->bio) - blk_rq_bio_prep(q, rq, bio); - else if (!ll_back_merge_fn(q, rq, bio)) - return -EINVAL; - else { - rq->biotail->bi_next = bio; - rq->biotail = bio; - } - - return 0; + return blk_rq_append_bio(q, rq, bio); } static int scsi_bi_endio(struct bio *bio, unsigned int bytes_done, int error) -- cgit v1.2.3 From 66846572bfb4ec62bcba260028cbbcbdb77bd636 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Thu, 16 Aug 2007 13:31:28 +0200 Subject: Stop exporting blk_rq_bio_prep blk_rq_bio_prep is exported for use in exactly one place. That place can benefit from using the new blk_rq_append_bio instead. So - change dm-emc to call blk_rq_append_bio - stop exporting blk_rq_bio_prep, and - initialise rq_disk in blk_rq_bio_prep, as dm-emc needs it. Signed-off-by: Neil Brown diff .prev/block/ll_rw_blk.c ./block/ll_rw_blk.c Signed-off-by: Jens Axboe --- drivers/md/dm-emc.c | 10 +--------- 1 file changed, 1 insertion(+), 9 deletions(-) (limited to 'drivers') diff --git a/drivers/md/dm-emc.c b/drivers/md/dm-emc.c index 265c467854d..71cc858b786 100644 --- a/drivers/md/dm-emc.c +++ b/drivers/md/dm-emc.c @@ -109,15 +109,7 @@ static struct request *get_failover_req(struct emc_handler *h, return NULL; } - rq->bio = rq->biotail = bio; - blk_rq_bio_prep(q, rq, bio); - - rq->rq_disk = bdev->bd_contains->bd_disk; - - /* bio backed don't set data */ - rq->buffer = rq->data = NULL; - /* rq data_len used for pc cmd's request_bufflen */ - rq->data_len = bio->bi_size; + blk_rq_append_bio(q, rq, bio); rq->sense = h->sense; memset(rq->sense, 0, SCSI_SENSE_BUFFERSIZE); -- cgit v1.2.3 From 6c92e699b56287da582ccb12a64b959b6d6109ba Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Thu, 16 Aug 2007 13:43:12 +0200 Subject: Fixup rq_for_each_segment() indentation Remove one level of nesting where appropriate. Signed-off-by: Jens Axboe --- drivers/block/lguest_blk.c | 24 +++++++++++------------ drivers/block/nbd.c | 43 ++++++++++++++++++++---------------------- drivers/block/ps3disk.c | 19 +++++++++---------- drivers/block/xen-blkfront.c | 25 ++++++++++++------------ drivers/ide/ide-floppy.c | 36 +++++++++++++++++------------------ drivers/s390/block/dasd_diag.c | 28 +++++++++++++-------------- drivers/s390/block/dasd_eckd.c | 13 ++++++------- drivers/s390/block/dasd_fba.c | 13 ++++++------- drivers/s390/char/tape_34xx.c | 19 +++++++++---------- drivers/s390/char/tape_3590.c | 23 +++++++++++----------- 10 files changed, 117 insertions(+), 126 deletions(-) (limited to 'drivers') diff --git a/drivers/block/lguest_blk.c b/drivers/block/lguest_blk.c index 1e838ae60a6..fa8e42341b8 100644 --- a/drivers/block/lguest_blk.c +++ b/drivers/block/lguest_blk.c @@ -147,18 +147,18 @@ static unsigned int req_to_dma(struct request *req, struct lguest_dma *dma) struct bio_vec *bvec; rq_for_each_segment(bvec, req, iter) { - /* We told the block layer not to give us too many. */ - BUG_ON(i == LGUEST_MAX_DMA_SECTIONS); - /* If we had a zero-length segment, it would look like - * the end of the data referred to by the "struct - * lguest_dma", so make sure that doesn't happen. */ - BUG_ON(!bvec->bv_len); - /* Convert page & offset to a physical address */ - dma->addr[i] = page_to_phys(bvec->bv_page) - + bvec->bv_offset; - dma->len[i] = bvec->bv_len; - len += bvec->bv_len; - i++; + /* We told the block layer not to give us too many. */ + BUG_ON(i == LGUEST_MAX_DMA_SECTIONS); + /* If we had a zero-length segment, it would look like + * the end of the data referred to by the "struct + * lguest_dma", so make sure that doesn't happen. */ + BUG_ON(!bvec->bv_len); + /* Convert page & offset to a physical address */ + dma->addr[i] = page_to_phys(bvec->bv_page) + + bvec->bv_offset; + dma->len[i] = bvec->bv_len; + len += bvec->bv_len; + i++; } /* If the array isn't full, we mark the end with a 0 length */ if (i < LGUEST_MAX_DMA_SECTIONS) diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c index 228b2ff577a..be5ec3a9b1f 100644 --- a/drivers/block/nbd.c +++ b/drivers/block/nbd.c @@ -212,19 +212,17 @@ static int nbd_send_req(struct nbd_device *lo, struct request *req) * whether to set MSG_MORE or not... */ rq_for_each_segment(bvec, req, iter) { - flags = 0; - if (!rq_iter_last(req, iter)) - flags = MSG_MORE; - dprintk(DBG_TX, "%s: request %p: sending %d bytes data\n", - lo->disk->disk_name, req, - bvec->bv_len); - result = sock_send_bvec(sock, bvec, flags); - if (result <= 0) { - printk(KERN_ERR "%s: Send data failed (result %d)\n", - lo->disk->disk_name, - result); - goto error_out; - } + flags = 0; + if (!rq_iter_last(req, iter)) + flags = MSG_MORE; + dprintk(DBG_TX, "%s: request %p: sending %d bytes data\n", + lo->disk->disk_name, req, bvec->bv_len); + result = sock_send_bvec(sock, bvec, flags); + if (result <= 0) { + printk(KERN_ERR "%s: Send data failed (result %d)\n", + lo->disk->disk_name, result); + goto error_out; + } } } return 0; @@ -323,16 +321,15 @@ static struct request *nbd_read_stat(struct nbd_device *lo) struct bio_vec *bvec; rq_for_each_segment(bvec, req, iter) { - result = sock_recv_bvec(sock, bvec); - if (result <= 0) { - printk(KERN_ERR "%s: Receive data failed (result %d)\n", - lo->disk->disk_name, - result); - req->errors++; - return req; - } - dprintk(DBG_RX, "%s: request %p: got %d bytes data\n", - lo->disk->disk_name, req, bvec->bv_len); + result = sock_recv_bvec(sock, bvec); + if (result <= 0) { + printk(KERN_ERR "%s: Receive data failed (result %d)\n", + lo->disk->disk_name, result); + req->errors++; + return req; + } + dprintk(DBG_RX, "%s: request %p: got %d bytes data\n", + lo->disk->disk_name, req, bvec->bv_len); } } return req; diff --git a/drivers/block/ps3disk.c b/drivers/block/ps3disk.c index 8953e7ce001..06d0552cf49 100644 --- a/drivers/block/ps3disk.c +++ b/drivers/block/ps3disk.c @@ -105,16 +105,15 @@ static void ps3disk_scatter_gather(struct ps3_storage_device *dev, bio_sectors(iter.bio), (unsigned long)iter.bio->bi_sector); - size = bvec->bv_len; - buf = bvec_kmap_irq(bvec, &flags); - if (gather) - memcpy(dev->bounce_buf+offset, buf, size); - else - memcpy(buf, dev->bounce_buf+offset, size); - offset += size; - flush_kernel_dcache_page(bvec->bv_page); - bvec_kunmap_irq(bvec, &flags); - + size = bvec->bv_len; + buf = bvec_kmap_irq(bvec, &flags); + if (gather) + memcpy(dev->bounce_buf+offset, buf, size); + else + memcpy(buf, dev->bounce_buf+offset, size); + offset += size; + flush_kernel_dcache_page(bvec->bv_page); + bvec_kunmap_irq(bvec, &flags); i++; } } diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c index 6af250113c2..2bdebcb3ff1 100644 --- a/drivers/block/xen-blkfront.c +++ b/drivers/block/xen-blkfront.c @@ -186,31 +186,30 @@ static int blkif_queue_request(struct request *req) ring_req->nr_segments = 0; rq_for_each_segment(bvec, req, iter) { - BUG_ON(ring_req->nr_segments - == BLKIF_MAX_SEGMENTS_PER_REQUEST); - buffer_mfn = pfn_to_mfn(page_to_pfn(bvec->bv_page)); - fsect = bvec->bv_offset >> 9; - lsect = fsect + (bvec->bv_len >> 9) - 1; - /* install a grant reference. */ - ref = gnttab_claim_grant_reference(&gref_head); - BUG_ON(ref == -ENOSPC); - - gnttab_grant_foreign_access_ref( + BUG_ON(ring_req->nr_segments == BLKIF_MAX_SEGMENTS_PER_REQUEST); + buffer_mfn = pfn_to_mfn(page_to_pfn(bvec->bv_page)); + fsect = bvec->bv_offset >> 9; + lsect = fsect + (bvec->bv_len >> 9) - 1; + /* install a grant reference. */ + ref = gnttab_claim_grant_reference(&gref_head); + BUG_ON(ref == -ENOSPC); + + gnttab_grant_foreign_access_ref( ref, info->xbdev->otherend_id, buffer_mfn, rq_data_dir(req) ); - info->shadow[id].frame[ring_req->nr_segments] = + info->shadow[id].frame[ring_req->nr_segments] = mfn_to_pfn(buffer_mfn); - ring_req->seg[ring_req->nr_segments] = + ring_req->seg[ring_req->nr_segments] = (struct blkif_request_segment) { .gref = ref, .first_sect = fsect, .last_sect = lsect }; - ring_req->nr_segments++; + ring_req->nr_segments++; } info->ring.req_prod_pvt++; diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c index a775450d7a3..04a357808f2 100644 --- a/drivers/ide/ide-floppy.c +++ b/drivers/ide/ide-floppy.c @@ -612,18 +612,18 @@ static void idefloppy_input_buffers (ide_drive_t *drive, idefloppy_pc_t *pc, uns int count, done = 0; rq_for_each_segment(bvec, rq, iter) { - if (!bcount) - break; + if (!bcount) + break; - count = min(bvec->bv_len, bcount); + count = min(bvec->bv_len, bcount); - data = bvec_kmap_irq(bvec, &flags); - drive->hwif->atapi_input_bytes(drive, data, count); - bvec_kunmap_irq(data, &flags); + data = bvec_kmap_irq(bvec, &flags); + drive->hwif->atapi_input_bytes(drive, data, count); + bvec_kunmap_irq(data, &flags); - bcount -= count; - pc->b_count += count; - done += count; + bcount -= count; + pc->b_count += count; + done += count; } idefloppy_do_end_request(drive, 1, done >> 9); @@ -644,18 +644,18 @@ static void idefloppy_output_buffers (ide_drive_t *drive, idefloppy_pc_t *pc, un char *data; rq_for_each_segment(bvec, rq, iter) { - if (!bcount) - break; + if (!bcount) + break; - count = min(bvec->bv_len, bcount); + count = min(bvec->bv_len, bcount); - data = bvec_kmap_irq(bvec, &flags); - drive->hwif->atapi_output_bytes(drive, data, count); - bvec_kunmap_irq(data, &flags); + data = bvec_kmap_irq(bvec, &flags); + drive->hwif->atapi_output_bytes(drive, data, count); + bvec_kunmap_irq(data, &flags); - bcount -= count; - pc->b_count += count; - done += count; + bcount -= count; + pc->b_count += count; + done += count; } idefloppy_do_end_request(drive, 1, done >> 9); diff --git a/drivers/s390/block/dasd_diag.c b/drivers/s390/block/dasd_diag.c index 6bb9676f203..571320ab9e1 100644 --- a/drivers/s390/block/dasd_diag.c +++ b/drivers/s390/block/dasd_diag.c @@ -493,10 +493,10 @@ dasd_diag_build_cp(struct dasd_device * device, struct request *req) /* Check struct bio and count the number of blocks for the request. */ count = 0; rq_for_each_segment(bv, req, iter) { - if (bv->bv_len & (blksize - 1)) - /* Fba can only do full blocks. */ - return ERR_PTR(-EINVAL); - count += bv->bv_len >> (device->s2b_shift + 9); + if (bv->bv_len & (blksize - 1)) + /* Fba can only do full blocks. */ + return ERR_PTR(-EINVAL); + count += bv->bv_len >> (device->s2b_shift + 9); } /* Paranoia. */ if (count != last_rec - first_rec + 1) @@ -514,16 +514,16 @@ dasd_diag_build_cp(struct dasd_device * device, struct request *req) dbio = dreq->bio; recid = first_rec; rq_for_each_segment(bv, req, iter) { - dst = page_address(bv->bv_page) + bv->bv_offset; - for (off = 0; off < bv->bv_len; off += blksize) { - memset(dbio, 0, sizeof (struct dasd_diag_bio)); - dbio->type = rw_cmd; - dbio->block_number = recid + 1; - dbio->buffer = dst; - dbio++; - dst += blksize; - recid++; - } + dst = page_address(bv->bv_page) + bv->bv_offset; + for (off = 0; off < bv->bv_len; off += blksize) { + memset(dbio, 0, sizeof (struct dasd_diag_bio)); + dbio->type = rw_cmd; + dbio->block_number = recid + 1; + dbio->buffer = dst; + dbio++; + dst += blksize; + recid++; + } } cqr->retries = DIAG_MAX_RETRIES; cqr->buildclk = get_clock(); diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c index 36ba4584987..44adf8496bd 100644 --- a/drivers/s390/block/dasd_eckd.c +++ b/drivers/s390/block/dasd_eckd.c @@ -1206,14 +1206,13 @@ dasd_eckd_build_cp(struct dasd_device * device, struct request *req) count = 0; cidaw = 0; rq_for_each_segment(bv, req, iter) { - if (bv->bv_len & (blksize - 1)) - /* Eckd can only do full blocks. */ - return ERR_PTR(-EINVAL); - count += bv->bv_len >> (device->s2b_shift + 9); + if (bv->bv_len & (blksize - 1)) + /* Eckd can only do full blocks. */ + return ERR_PTR(-EINVAL); + count += bv->bv_len >> (device->s2b_shift + 9); #if defined(CONFIG_64BIT) - if (idal_is_needed (page_address(bv->bv_page), - bv->bv_len)) - cidaw += bv->bv_len >> (device->s2b_shift + 9); + if (idal_is_needed (page_address(bv->bv_page), bv->bv_len)) + cidaw += bv->bv_len >> (device->s2b_shift + 9); #endif } /* Paranoia. */ diff --git a/drivers/s390/block/dasd_fba.c b/drivers/s390/block/dasd_fba.c index 119b8d2d5f1..1d95822e0b8 100644 --- a/drivers/s390/block/dasd_fba.c +++ b/drivers/s390/block/dasd_fba.c @@ -257,14 +257,13 @@ dasd_fba_build_cp(struct dasd_device * device, struct request *req) count = 0; cidaw = 0; rq_for_each_segment(bv, req, iter) { - if (bv->bv_len & (blksize - 1)) - /* Fba can only do full blocks. */ - return ERR_PTR(-EINVAL); - count += bv->bv_len >> (device->s2b_shift + 9); + if (bv->bv_len & (blksize - 1)) + /* Fba can only do full blocks. */ + return ERR_PTR(-EINVAL); + count += bv->bv_len >> (device->s2b_shift + 9); #if defined(CONFIG_64BIT) - if (idal_is_needed (page_address(bv->bv_page), - bv->bv_len)) - cidaw += bv->bv_len / blksize; + if (idal_is_needed (page_address(bv->bv_page), bv->bv_len)) + cidaw += bv->bv_len / blksize; #endif } /* Paranoia. */ diff --git a/drivers/s390/char/tape_34xx.c b/drivers/s390/char/tape_34xx.c index ea3e6a345c8..5b47e9cce75 100644 --- a/drivers/s390/char/tape_34xx.c +++ b/drivers/s390/char/tape_34xx.c @@ -1173,16 +1173,15 @@ tape_34xx_bread(struct tape_device *device, struct request *req) ccw = tape_ccw_cc(ccw, NOP, 0, NULL); rq_for_each_segment(bv, req, iter) { - dst = kmap(bv->bv_page) + bv->bv_offset; - for (off = 0; off < bv->bv_len; - off += TAPEBLOCK_HSEC_SIZE) { - ccw->flags = CCW_FLAG_CC; - ccw->cmd_code = READ_FORWARD; - ccw->count = TAPEBLOCK_HSEC_SIZE; - set_normalized_cda(ccw, (void*) __pa(dst)); - ccw++; - dst += TAPEBLOCK_HSEC_SIZE; - } + dst = kmap(bv->bv_page) + bv->bv_offset; + for (off = 0; off < bv->bv_len; off += TAPEBLOCK_HSEC_SIZE) { + ccw->flags = CCW_FLAG_CC; + ccw->cmd_code = READ_FORWARD; + ccw->count = TAPEBLOCK_HSEC_SIZE; + set_normalized_cda(ccw, (void*) __pa(dst)); + ccw++; + dst += TAPEBLOCK_HSEC_SIZE; + } } ccw = tape_ccw_end(ccw, NOP, 0, NULL); diff --git a/drivers/s390/char/tape_3590.c b/drivers/s390/char/tape_3590.c index b16ad7a7631..9f244c591ee 100644 --- a/drivers/s390/char/tape_3590.c +++ b/drivers/s390/char/tape_3590.c @@ -652,18 +652,17 @@ tape_3590_bread(struct tape_device *device, struct request *req) ccw = tape_ccw_cc(ccw, NOP, 0, NULL); rq_for_each_segment(bv, req, iter) { - dst = page_address(bv->bv_page) + bv->bv_offset; - for (off = 0; off < bv->bv_len; - off += TAPEBLOCK_HSEC_SIZE) { - ccw->flags = CCW_FLAG_CC; - ccw->cmd_code = READ_FORWARD; - ccw->count = TAPEBLOCK_HSEC_SIZE; - set_normalized_cda(ccw, (void *) __pa(dst)); - ccw++; - dst += TAPEBLOCK_HSEC_SIZE; - } - if (off > bv->bv_len) - BUG(); + dst = page_address(bv->bv_page) + bv->bv_offset; + for (off = 0; off < bv->bv_len; off += TAPEBLOCK_HSEC_SIZE) { + ccw->flags = CCW_FLAG_CC; + ccw->cmd_code = READ_FORWARD; + ccw->count = TAPEBLOCK_HSEC_SIZE; + set_normalized_cda(ccw, (void *) __pa(dst)); + ccw++; + dst += TAPEBLOCK_HSEC_SIZE; + } + if (off > bv->bv_len) + BUG(); } ccw = tape_ccw_end(ccw, NOP, 0, NULL); DBF_EVENT(6, "xBREDccwg\n"); -- cgit v1.2.3 From 6712ecf8f648118c3363c142196418f89a510b90 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Thu, 27 Sep 2007 12:47:43 +0200 Subject: Drop 'size' argument from bio_endio and bi_end_io As bi_end_io is only called once when the reqeust is complete, the 'size' argument is now redundant. Remove it. Now there is no need for bio_endio to subtract the size completed from bi_size. So don't do that either. While we are at it, change bi_end_io to return void. Signed-off-by: Neil Brown Signed-off-by: Jens Axboe --- drivers/block/aoe/aoeblk.c | 4 ++-- drivers/block/aoe/aoecmd.c | 2 +- drivers/block/aoe/aoedev.c | 4 ++-- drivers/block/cciss.c | 2 +- drivers/block/cpqarray.c | 2 +- drivers/block/floppy.c | 6 +----- drivers/block/loop.c | 4 ++-- drivers/block/pktcdvd.c | 25 ++++++----------------- drivers/block/rd.c | 4 ++-- drivers/block/umem.c | 2 +- drivers/md/dm-crypt.c | 21 +++++++------------ drivers/md/dm-emc.c | 5 +---- drivers/md/dm-io.c | 8 +------- drivers/md/dm-mpath.c | 4 ++-- drivers/md/dm-raid1.c | 4 ++-- drivers/md/dm-snap.c | 2 +- drivers/md/dm-zero.c | 2 +- drivers/md/dm.c | 18 +++++++---------- drivers/md/faulty.c | 10 ++++----- drivers/md/linear.c | 4 ++-- drivers/md/md.c | 25 ++++++++--------------- drivers/md/multipath.c | 13 ++++-------- drivers/md/raid0.c | 4 ++-- drivers/md/raid1.c | 30 +++++++-------------------- drivers/md/raid10.c | 31 ++++++++-------------------- drivers/md/raid5.c | 48 +++++++++++++++----------------------------- drivers/s390/block/dcssblk.c | 4 ++-- drivers/s390/block/xpram.c | 6 ++---- drivers/scsi/scsi_lib.c | 10 +++------ 29 files changed, 99 insertions(+), 205 deletions(-) (limited to 'drivers') diff --git a/drivers/block/aoe/aoeblk.c b/drivers/block/aoe/aoeblk.c index 007faaf008e..b1d00ef6659 100644 --- a/drivers/block/aoe/aoeblk.c +++ b/drivers/block/aoe/aoeblk.c @@ -138,7 +138,7 @@ aoeblk_make_request(struct request_queue *q, struct bio *bio) buf = mempool_alloc(d->bufpool, GFP_NOIO); if (buf == NULL) { printk(KERN_INFO "aoe: buf allocation failure\n"); - bio_endio(bio, bio->bi_size, -ENOMEM); + bio_endio(bio, -ENOMEM); return 0; } memset(buf, 0, sizeof(*buf)); @@ -159,7 +159,7 @@ aoeblk_make_request(struct request_queue *q, struct bio *bio) d->aoemajor, d->aoeminor); spin_unlock_irqrestore(&d->lock, flags); mempool_free(buf, d->bufpool); - bio_endio(bio, bio->bi_size, -ENXIO); + bio_endio(bio, -ENXIO); return 0; } diff --git a/drivers/block/aoe/aoecmd.c b/drivers/block/aoe/aoecmd.c index 01fbdd38e3b..5abae34ad65 100644 --- a/drivers/block/aoe/aoecmd.c +++ b/drivers/block/aoe/aoecmd.c @@ -652,7 +652,7 @@ aoecmd_ata_rsp(struct sk_buff *skb) disk_stat_add(disk, sectors[rw], n_sect); disk_stat_add(disk, io_ticks, duration); n = (buf->flags & BUFFL_FAIL) ? -EIO : 0; - bio_endio(buf->bio, buf->bio->bi_size, n); + bio_endio(buf->bio, n); mempool_free(buf, d->bufpool); } } diff --git a/drivers/block/aoe/aoedev.c b/drivers/block/aoe/aoedev.c index 05a97197c91..51f50710e5f 100644 --- a/drivers/block/aoe/aoedev.c +++ b/drivers/block/aoe/aoedev.c @@ -119,7 +119,7 @@ aoedev_downdev(struct aoedev *d) bio = buf->bio; if (--buf->nframesout == 0) { mempool_free(buf, d->bufpool); - bio_endio(bio, bio->bi_size, -EIO); + bio_endio(bio, -EIO); } skb_shinfo(f->skb)->nr_frags = f->skb->data_len = 0; } @@ -130,7 +130,7 @@ aoedev_downdev(struct aoedev *d) list_del(d->bufq.next); bio = buf->bio; mempool_free(buf, d->bufpool); - bio_endio(bio, bio->bi_size, -EIO); + bio_endio(bio, -EIO); } if (d->gd) diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c index 084358a828e..28d145756f6 100644 --- a/drivers/block/cciss.c +++ b/drivers/block/cciss.c @@ -1194,7 +1194,7 @@ static inline void complete_buffers(struct bio *bio, int status) int nr_sectors = bio_sectors(bio); bio->bi_next = NULL; - bio_endio(bio, nr_sectors << 9, status ? 0 : -EIO); + bio_endio(bio, status ? 0 : -EIO); bio = xbh; } } diff --git a/drivers/block/cpqarray.c b/drivers/block/cpqarray.c index eb9799acf65..3853c9a38d6 100644 --- a/drivers/block/cpqarray.c +++ b/drivers/block/cpqarray.c @@ -987,7 +987,7 @@ static inline void complete_buffers(struct bio *bio, int ok) xbh = bio->bi_next; bio->bi_next = NULL; - bio_endio(bio, nr_sectors << 9, ok ? 0 : -EIO); + bio_endio(bio, ok ? 0 : -EIO); bio = xbh; } diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c index f0a86e201b4..80483aac4cc 100644 --- a/drivers/block/floppy.c +++ b/drivers/block/floppy.c @@ -3810,14 +3810,10 @@ static int check_floppy_change(struct gendisk *disk) * a disk in the drive, and whether that disk is writable. */ -static int floppy_rb0_complete(struct bio *bio, unsigned int bytes_done, +static void floppy_rb0_complete(struct bio *bio, int err) { - if (bio->bi_size) - return 1; - complete((struct completion *)bio->bi_private); - return 0; } static int __floppy_read_block_0(struct block_device *bdev) diff --git a/drivers/block/loop.c b/drivers/block/loop.c index 9f015fce413..b9233a06934 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -551,7 +551,7 @@ static int loop_make_request(struct request_queue *q, struct bio *old_bio) out: spin_unlock_irq(&lo->lo_lock); - bio_io_error(old_bio, old_bio->bi_size); + bio_io_error(old_bio); return 0; } @@ -580,7 +580,7 @@ static inline void loop_handle_bio(struct loop_device *lo, struct bio *bio) bio_put(bio); } else { int ret = do_bio_filebacked(lo, bio); - bio_endio(bio, bio->bi_size, ret); + bio_endio(bio, ret); } } diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c index fadbfd880ba..540bf367698 100644 --- a/drivers/block/pktcdvd.c +++ b/drivers/block/pktcdvd.c @@ -1058,15 +1058,12 @@ static void pkt_make_local_copy(struct packet_data *pkt, struct bio_vec *bvec) } } -static int pkt_end_io_read(struct bio *bio, unsigned int bytes_done, int err) +static void pkt_end_io_read(struct bio *bio, int err) { struct packet_data *pkt = bio->bi_private; struct pktcdvd_device *pd = pkt->pd; BUG_ON(!pd); - if (bio->bi_size) - return 1; - VPRINTK("pkt_end_io_read: bio=%p sec0=%llx sec=%llx err=%d\n", bio, (unsigned long long)pkt->sector, (unsigned long long)bio->bi_sector, err); @@ -1077,19 +1074,14 @@ static int pkt_end_io_read(struct bio *bio, unsigned int bytes_done, int err) wake_up(&pd->wqueue); } pkt_bio_finished(pd); - - return 0; } -static int pkt_end_io_packet_write(struct bio *bio, unsigned int bytes_done, int err) +static void pkt_end_io_packet_write(struct bio *bio, int err) { struct packet_data *pkt = bio->bi_private; struct pktcdvd_device *pd = pkt->pd; BUG_ON(!pd); - if (bio->bi_size) - return 1; - VPRINTK("pkt_end_io_packet_write: id=%d, err=%d\n", pkt->id, err); pd->stats.pkt_ended++; @@ -1098,7 +1090,6 @@ static int pkt_end_io_packet_write(struct bio *bio, unsigned int bytes_done, int atomic_dec(&pkt->io_wait); atomic_inc(&pkt->run_sm); wake_up(&pd->wqueue); - return 0; } /* @@ -1470,7 +1461,7 @@ static void pkt_finish_packet(struct packet_data *pkt, int uptodate) while (bio) { next = bio->bi_next; bio->bi_next = NULL; - bio_endio(bio, bio->bi_size, uptodate ? 0 : -EIO); + bio_endio(bio, uptodate ? 0 : -EIO); bio = next; } pkt->orig_bios = pkt->orig_bios_tail = NULL; @@ -2462,19 +2453,15 @@ static int pkt_close(struct inode *inode, struct file *file) } -static int pkt_end_io_read_cloned(struct bio *bio, unsigned int bytes_done, int err) +static void pkt_end_io_read_cloned(struct bio *bio, int err) { struct packet_stacked_data *psd = bio->bi_private; struct pktcdvd_device *pd = psd->pd; - if (bio->bi_size) - return 1; - bio_put(bio); - bio_endio(psd->bio, psd->bio->bi_size, err); + bio_endio(psd->bio, err); mempool_free(psd, psd_pool); pkt_bio_finished(pd); - return 0; } static int pkt_make_request(struct request_queue *q, struct bio *bio) @@ -2620,7 +2607,7 @@ static int pkt_make_request(struct request_queue *q, struct bio *bio) } return 0; end_io: - bio_io_error(bio, bio->bi_size); + bio_io_error(bio); return 0; } diff --git a/drivers/block/rd.c b/drivers/block/rd.c index 65150b548f3..701ea77f62e 100644 --- a/drivers/block/rd.c +++ b/drivers/block/rd.c @@ -287,10 +287,10 @@ static int rd_make_request(struct request_queue *q, struct bio *bio) if (ret) goto fail; - bio_endio(bio, bio->bi_size, 0); + bio_endio(bio, 0); return 0; fail: - bio_io_error(bio, bio->bi_size); + bio_io_error(bio); return 0; } diff --git a/drivers/block/umem.c b/drivers/block/umem.c index c378e285d70..be7fac86725 100644 --- a/drivers/block/umem.c +++ b/drivers/block/umem.c @@ -545,7 +545,7 @@ static void process_page(unsigned long data) return_bio = bio->bi_next; bio->bi_next = NULL; - bio_endio(bio, bio->bi_size, 0); + bio_endio(bio, 0); } } diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c index bdc52d6922b..8216a6f75be 100644 --- a/drivers/md/dm-crypt.c +++ b/drivers/md/dm-crypt.c @@ -489,7 +489,7 @@ static void dec_pending(struct dm_crypt_io *io, int error) if (!atomic_dec_and_test(&io->pending)) return; - bio_endio(io->base_bio, io->base_bio->bi_size, io->error); + bio_endio(io->base_bio, io->error); mempool_free(io, cc->io_pool); } @@ -509,25 +509,19 @@ static void kcryptd_queue_io(struct dm_crypt_io *io) queue_work(_kcryptd_workqueue, &io->work); } -static int crypt_endio(struct bio *clone, unsigned int done, int error) +static void crypt_endio(struct bio *clone, int error) { struct dm_crypt_io *io = clone->bi_private; struct crypt_config *cc = io->target->private; unsigned read_io = bio_data_dir(clone) == READ; /* - * free the processed pages, even if - * it's only a partially completed write + * free the processed pages */ - if (!read_io) - crypt_free_buffer_pages(cc, clone, done); - - /* keep going - not finished yet */ - if (unlikely(clone->bi_size)) - return 1; - - if (!read_io) + if (!read_io) { + crypt_free_buffer_pages(cc, clone, clone->bi_size); goto out; + } if (unlikely(!bio_flagged(clone, BIO_UPTODATE))) { error = -EIO; @@ -537,12 +531,11 @@ static int crypt_endio(struct bio *clone, unsigned int done, int error) bio_put(clone); io->post_process = 1; kcryptd_queue_io(io); - return 0; + return; out: bio_put(clone); dec_pending(io, error); - return error; } static void clone_init(struct dm_crypt_io *io, struct bio *clone) diff --git a/drivers/md/dm-emc.c b/drivers/md/dm-emc.c index 71cc858b786..a2191a4fcf7 100644 --- a/drivers/md/dm-emc.c +++ b/drivers/md/dm-emc.c @@ -38,13 +38,10 @@ static inline void free_bio(struct bio *bio) bio_put(bio); } -static int emc_endio(struct bio *bio, unsigned int bytes_done, int error) +static void emc_endio(struct bio *bio, int error) { struct dm_path *path = bio->bi_private; - if (bio->bi_size) - return 1; - /* We also need to look at the sense keys here whether or not to * switch to the next PG etc. * diff --git a/drivers/md/dm-io.c b/drivers/md/dm-io.c index f3a77248643..b8e342fe758 100644 --- a/drivers/md/dm-io.c +++ b/drivers/md/dm-io.c @@ -124,15 +124,11 @@ static void dec_count(struct io *io, unsigned int region, int error) } } -static int endio(struct bio *bio, unsigned int done, int error) +static void endio(struct bio *bio, int error) { struct io *io; unsigned region; - /* keep going until we've finished */ - if (bio->bi_size) - return 1; - if (error && bio_data_dir(bio) == READ) zero_fill_bio(bio); @@ -146,8 +142,6 @@ static int endio(struct bio *bio, unsigned int done, int error) bio_put(bio); dec_count(io, region, error); - - return 0; } /*----------------------------------------------------------------- diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c index d6ca9d0a6fd..31056abca89 100644 --- a/drivers/md/dm-mpath.c +++ b/drivers/md/dm-mpath.c @@ -390,11 +390,11 @@ static void dispatch_queued_ios(struct multipath *m) r = map_io(m, bio, mpio, 1); if (r < 0) - bio_endio(bio, bio->bi_size, r); + bio_endio(bio, r); else if (r == DM_MAPIO_REMAPPED) generic_make_request(bio); else if (r == DM_MAPIO_REQUEUE) - bio_endio(bio, bio->bi_size, -EIO); + bio_endio(bio, -EIO); bio = next; } diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c index 144071e70a9..d09ff15490a 100644 --- a/drivers/md/dm-raid1.c +++ b/drivers/md/dm-raid1.c @@ -820,7 +820,7 @@ static void write_callback(unsigned long error, void *context) break; } } - bio_endio(bio, bio->bi_size, 0); + bio_endio(bio, 0); } static void do_write(struct mirror_set *ms, struct bio *bio) @@ -900,7 +900,7 @@ static void do_writes(struct mirror_set *ms, struct bio_list *writes) */ if (unlikely(ms->log_failure)) while ((bio = bio_list_pop(&sync))) - bio_endio(bio, bio->bi_size, -EIO); + bio_endio(bio, -EIO); else while ((bio = bio_list_pop(&sync))) do_write(ms, bio); diff --git a/drivers/md/dm-snap.c b/drivers/md/dm-snap.c index 83ddbfe6b8a..98a633f3d6b 100644 --- a/drivers/md/dm-snap.c +++ b/drivers/md/dm-snap.c @@ -636,7 +636,7 @@ static void error_bios(struct bio *bio) while (bio) { n = bio->bi_next; bio->bi_next = NULL; - bio_io_error(bio, bio->bi_size); + bio_io_error(bio); bio = n; } } diff --git a/drivers/md/dm-zero.c b/drivers/md/dm-zero.c index f314d7dc9c2..bdec206c404 100644 --- a/drivers/md/dm-zero.c +++ b/drivers/md/dm-zero.c @@ -43,7 +43,7 @@ static int zero_map(struct dm_target *ti, struct bio *bio, break; } - bio_endio(bio, bio->bi_size, 0); + bio_endio(bio, 0); /* accepted bio, don't make new request */ return DM_MAPIO_SUBMITTED; diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 2120155929a..167765c4774 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -484,23 +484,20 @@ static void dec_pending(struct dm_io *io, int error) blk_add_trace_bio(io->md->queue, io->bio, BLK_TA_COMPLETE); - bio_endio(io->bio, io->bio->bi_size, io->error); + bio_endio(io->bio, io->error); } free_io(io->md, io); } } -static int clone_endio(struct bio *bio, unsigned int done, int error) +static void clone_endio(struct bio *bio, int error) { int r = 0; struct dm_target_io *tio = bio->bi_private; struct mapped_device *md = tio->io->md; dm_endio_fn endio = tio->ti->type->end_io; - if (bio->bi_size) - return 1; - if (!bio_flagged(bio, BIO_UPTODATE) && !error) error = -EIO; @@ -514,7 +511,7 @@ static int clone_endio(struct bio *bio, unsigned int done, int error) error = r; else if (r == DM_ENDIO_INCOMPLETE) /* The target will handle the io */ - return 1; + return; else if (r) { DMWARN("unimplemented target endio return value: %d", r); BUG(); @@ -530,7 +527,6 @@ static int clone_endio(struct bio *bio, unsigned int done, int error) bio_put(bio); free_tio(md, tio); - return r; } static sector_t max_io_len(struct mapped_device *md, @@ -761,7 +757,7 @@ static void __split_bio(struct mapped_device *md, struct bio *bio) ci.map = dm_get_table(md); if (!ci.map) { - bio_io_error(bio, bio->bi_size); + bio_io_error(bio); return; } @@ -803,7 +799,7 @@ static int dm_request(struct request_queue *q, struct bio *bio) * guarantee it is (or can be) handled by the targets correctly. */ if (unlikely(bio_barrier(bio))) { - bio_endio(bio, bio->bi_size, -EOPNOTSUPP); + bio_endio(bio, -EOPNOTSUPP); return 0; } @@ -820,13 +816,13 @@ static int dm_request(struct request_queue *q, struct bio *bio) up_read(&md->io_lock); if (bio_rw(bio) == READA) { - bio_io_error(bio, bio->bi_size); + bio_io_error(bio); return 0; } r = queue_io(md, bio); if (r < 0) { - bio_io_error(bio, bio->bi_size); + bio_io_error(bio); return 0; } else if (r == 0) diff --git a/drivers/md/faulty.c b/drivers/md/faulty.c index cb059cf14c2..cf2ddce3411 100644 --- a/drivers/md/faulty.c +++ b/drivers/md/faulty.c @@ -65,18 +65,16 @@ #include -static int faulty_fail(struct bio *bio, unsigned int bytes_done, int error) +static void faulty_fail(struct bio *bio, int error) { struct bio *b = bio->bi_private; b->bi_size = bio->bi_size; b->bi_sector = bio->bi_sector; - if (bio->bi_size == 0) - bio_put(bio); + bio_put(bio); - clear_bit(BIO_UPTODATE, &b->bi_flags); - return (b->bi_end_io)(b, bytes_done, -EIO); + bio_io_error(b); } typedef struct faulty_conf { @@ -179,7 +177,7 @@ static int make_request(struct request_queue *q, struct bio *bio) /* special case - don't decrement, don't generic_make_request, * just fail immediately */ - bio_endio(bio, bio->bi_size, -EIO); + bio_endio(bio, -EIO); return 0; } diff --git a/drivers/md/linear.c b/drivers/md/linear.c index 17f795c3e0a..550148770bb 100644 --- a/drivers/md/linear.c +++ b/drivers/md/linear.c @@ -338,7 +338,7 @@ static int linear_make_request (struct request_queue *q, struct bio *bio) sector_t block; if (unlikely(bio_barrier(bio))) { - bio_endio(bio, bio->bi_size, -EOPNOTSUPP); + bio_endio(bio, -EOPNOTSUPP); return 0; } @@ -358,7 +358,7 @@ static int linear_make_request (struct request_queue *q, struct bio *bio) bdevname(tmp_dev->rdev->bdev, b), (unsigned long long)tmp_dev->size, (unsigned long long)tmp_dev->offset); - bio_io_error(bio, bio->bi_size); + bio_io_error(bio); return 0; } if (unlikely(bio->bi_sector + (bio->bi_size >> 9) > diff --git a/drivers/md/md.c b/drivers/md/md.c index f883b7e37f3..e8f102ea9b0 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -213,7 +213,7 @@ static DEFINE_SPINLOCK(all_mddevs_lock); static int md_fail_request (struct request_queue *q, struct bio *bio) { - bio_io_error(bio, bio->bi_size); + bio_io_error(bio); return 0; } @@ -384,12 +384,10 @@ static void free_disk_sb(mdk_rdev_t * rdev) } -static int super_written(struct bio *bio, unsigned int bytes_done, int error) +static void super_written(struct bio *bio, int error) { mdk_rdev_t *rdev = bio->bi_private; mddev_t *mddev = rdev->mddev; - if (bio->bi_size) - return 1; if (error || !test_bit(BIO_UPTODATE, &bio->bi_flags)) { printk("md: super_written gets error=%d, uptodate=%d\n", @@ -401,16 +399,13 @@ static int super_written(struct bio *bio, unsigned int bytes_done, int error) if (atomic_dec_and_test(&mddev->pending_writes)) wake_up(&mddev->sb_wait); bio_put(bio); - return 0; } -static int super_written_barrier(struct bio *bio, unsigned int bytes_done, int error) +static void super_written_barrier(struct bio *bio, int error) { struct bio *bio2 = bio->bi_private; mdk_rdev_t *rdev = bio2->bi_private; mddev_t *mddev = rdev->mddev; - if (bio->bi_size) - return 1; if (!test_bit(BIO_UPTODATE, &bio->bi_flags) && error == -EOPNOTSUPP) { @@ -424,11 +419,11 @@ static int super_written_barrier(struct bio *bio, unsigned int bytes_done, int e spin_unlock_irqrestore(&mddev->write_lock, flags); wake_up(&mddev->sb_wait); bio_put(bio); - return 0; + } else { + bio_put(bio2); + bio->bi_private = rdev; + super_written(bio, error); } - bio_put(bio2); - bio->bi_private = rdev; - return super_written(bio, bytes_done, error); } void md_super_write(mddev_t *mddev, mdk_rdev_t *rdev, @@ -489,13 +484,9 @@ void md_super_wait(mddev_t *mddev) finish_wait(&mddev->sb_wait, &wq); } -static int bi_complete(struct bio *bio, unsigned int bytes_done, int error) +static void bi_complete(struct bio *bio, int error) { - if (bio->bi_size) - return 1; - complete((struct completion*)bio->bi_private); - return 0; } int sync_page_io(struct block_device *bdev, sector_t sector, int size, diff --git a/drivers/md/multipath.c b/drivers/md/multipath.c index 1e2af43a73b..f2a63f394ad 100644 --- a/drivers/md/multipath.c +++ b/drivers/md/multipath.c @@ -82,21 +82,17 @@ static void multipath_end_bh_io (struct multipath_bh *mp_bh, int err) struct bio *bio = mp_bh->master_bio; multipath_conf_t *conf = mddev_to_conf(mp_bh->mddev); - bio_endio(bio, bio->bi_size, err); + bio_endio(bio, err); mempool_free(mp_bh, conf->pool); } -static int multipath_end_request(struct bio *bio, unsigned int bytes_done, - int error) +static void multipath_end_request(struct bio *bio, int error) { int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags); struct multipath_bh * mp_bh = (struct multipath_bh *)(bio->bi_private); multipath_conf_t *conf = mddev_to_conf(mp_bh->mddev); mdk_rdev_t *rdev = conf->multipaths[mp_bh->path].rdev; - if (bio->bi_size) - return 1; - if (uptodate) multipath_end_bh_io(mp_bh, 0); else if (!bio_rw_ahead(bio)) { @@ -112,7 +108,6 @@ static int multipath_end_request(struct bio *bio, unsigned int bytes_done, } else multipath_end_bh_io(mp_bh, error); rdev_dec_pending(rdev, conf->mddev); - return 0; } static void unplug_slaves(mddev_t *mddev) @@ -155,7 +150,7 @@ static int multipath_make_request (struct request_queue *q, struct bio * bio) const int rw = bio_data_dir(bio); if (unlikely(bio_barrier(bio))) { - bio_endio(bio, bio->bi_size, -EOPNOTSUPP); + bio_endio(bio, -EOPNOTSUPP); return 0; } @@ -169,7 +164,7 @@ static int multipath_make_request (struct request_queue *q, struct bio * bio) mp_bh->path = multipath_map(conf); if (mp_bh->path < 0) { - bio_endio(bio, bio->bi_size, -EIO); + bio_endio(bio, -EIO); mempool_free(mp_bh, conf->pool); return 0; } diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c index b8216bc6db4..ef0da2d8495 100644 --- a/drivers/md/raid0.c +++ b/drivers/md/raid0.c @@ -420,7 +420,7 @@ static int raid0_make_request (struct request_queue *q, struct bio *bio) const int rw = bio_data_dir(bio); if (unlikely(bio_barrier(bio))) { - bio_endio(bio, bio->bi_size, -EOPNOTSUPP); + bio_endio(bio, -EOPNOTSUPP); return 0; } @@ -490,7 +490,7 @@ bad_map: " or bigger than %dk %llu %d\n", chunk_size, (unsigned long long)bio->bi_sector, bio->bi_size >> 10); - bio_io_error(bio, bio->bi_size); + bio_io_error(bio); return 0; } diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index f33a729960c..6d03bea6fa5 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -238,7 +238,7 @@ static void raid_end_bio_io(r1bio_t *r1_bio) (unsigned long long) bio->bi_sector + (bio->bi_size >> 9) - 1); - bio_endio(bio, bio->bi_size, + bio_endio(bio, test_bit(R1BIO_Uptodate, &r1_bio->state) ? 0 : -EIO); } free_r1bio(r1_bio); @@ -255,16 +255,13 @@ static inline void update_head_pos(int disk, r1bio_t *r1_bio) r1_bio->sector + (r1_bio->sectors); } -static int raid1_end_read_request(struct bio *bio, unsigned int bytes_done, int error) +static void raid1_end_read_request(struct bio *bio, int error) { int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags); r1bio_t * r1_bio = (r1bio_t *)(bio->bi_private); int mirror; conf_t *conf = mddev_to_conf(r1_bio->mddev); - if (bio->bi_size) - return 1; - mirror = r1_bio->read_disk; /* * this branch is our 'one mirror IO has finished' event handler: @@ -301,10 +298,9 @@ static int raid1_end_read_request(struct bio *bio, unsigned int bytes_done, int } rdev_dec_pending(conf->mirrors[mirror].rdev, conf->mddev); - return 0; } -static int raid1_end_write_request(struct bio *bio, unsigned int bytes_done, int error) +static void raid1_end_write_request(struct bio *bio, int error) { int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags); r1bio_t * r1_bio = (r1bio_t *)(bio->bi_private); @@ -312,8 +308,6 @@ static int raid1_end_write_request(struct bio *bio, unsigned int bytes_done, int conf_t *conf = mddev_to_conf(r1_bio->mddev); struct bio *to_put = NULL; - if (bio->bi_size) - return 1; for (mirror = 0; mirror < conf->raid_disks; mirror++) if (r1_bio->bios[mirror] == bio) @@ -366,7 +360,7 @@ static int raid1_end_write_request(struct bio *bio, unsigned int bytes_done, int (unsigned long long) mbio->bi_sector, (unsigned long long) mbio->bi_sector + (mbio->bi_size >> 9) - 1); - bio_endio(mbio, mbio->bi_size, 0); + bio_endio(mbio, 0); } } } @@ -400,8 +394,6 @@ static int raid1_end_write_request(struct bio *bio, unsigned int bytes_done, int if (to_put) bio_put(to_put); - - return 0; } @@ -796,7 +788,7 @@ static int make_request(struct request_queue *q, struct bio * bio) if (unlikely(!mddev->barriers_work && bio_barrier(bio))) { if (rw == WRITE) md_write_end(mddev); - bio_endio(bio, bio->bi_size, -EOPNOTSUPP); + bio_endio(bio, -EOPNOTSUPP); return 0; } @@ -1137,14 +1129,11 @@ abort: } -static int end_sync_read(struct bio *bio, unsigned int bytes_done, int error) +static void end_sync_read(struct bio *bio, int error) { r1bio_t * r1_bio = (r1bio_t *)(bio->bi_private); int i; - if (bio->bi_size) - return 1; - for (i=r1_bio->mddev->raid_disks; i--; ) if (r1_bio->bios[i] == bio) break; @@ -1160,10 +1149,9 @@ static int end_sync_read(struct bio *bio, unsigned int bytes_done, int error) if (atomic_dec_and_test(&r1_bio->remaining)) reschedule_retry(r1_bio); - return 0; } -static int end_sync_write(struct bio *bio, unsigned int bytes_done, int error) +static void end_sync_write(struct bio *bio, int error) { int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags); r1bio_t * r1_bio = (r1bio_t *)(bio->bi_private); @@ -1172,9 +1160,6 @@ static int end_sync_write(struct bio *bio, unsigned int bytes_done, int error) int i; int mirror=0; - if (bio->bi_size) - return 1; - for (i = 0; i < conf->raid_disks; i++) if (r1_bio->bios[i] == bio) { mirror = i; @@ -1200,7 +1185,6 @@ static int end_sync_write(struct bio *bio, unsigned int bytes_done, int error) md_done_sync(mddev, r1_bio->sectors, uptodate); put_buf(r1_bio); } - return 0; } static void sync_request_write(mddev_t *mddev, r1bio_t *r1_bio) diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index 4e53792aa52..25a96c42bdb 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -227,7 +227,7 @@ static void raid_end_bio_io(r10bio_t *r10_bio) { struct bio *bio = r10_bio->master_bio; - bio_endio(bio, bio->bi_size, + bio_endio(bio, test_bit(R10BIO_Uptodate, &r10_bio->state) ? 0 : -EIO); free_r10bio(r10_bio); } @@ -243,15 +243,13 @@ static inline void update_head_pos(int slot, r10bio_t *r10_bio) r10_bio->devs[slot].addr + (r10_bio->sectors); } -static int raid10_end_read_request(struct bio *bio, unsigned int bytes_done, int error) +static void raid10_end_read_request(struct bio *bio, int error) { int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags); r10bio_t * r10_bio = (r10bio_t *)(bio->bi_private); int slot, dev; conf_t *conf = mddev_to_conf(r10_bio->mddev); - if (bio->bi_size) - return 1; slot = r10_bio->read_slot; dev = r10_bio->devs[slot].devnum; @@ -284,19 +282,15 @@ static int raid10_end_read_request(struct bio *bio, unsigned int bytes_done, int } rdev_dec_pending(conf->mirrors[dev].rdev, conf->mddev); - return 0; } -static int raid10_end_write_request(struct bio *bio, unsigned int bytes_done, int error) +static void raid10_end_write_request(struct bio *bio, int error) { int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags); r10bio_t * r10_bio = (r10bio_t *)(bio->bi_private); int slot, dev; conf_t *conf = mddev_to_conf(r10_bio->mddev); - if (bio->bi_size) - return 1; - for (slot = 0; slot < conf->copies; slot++) if (r10_bio->devs[slot].bio == bio) break; @@ -339,7 +333,6 @@ static int raid10_end_write_request(struct bio *bio, unsigned int bytes_done, in } rdev_dec_pending(conf->mirrors[dev].rdev, conf->mddev); - return 0; } @@ -787,7 +780,7 @@ static int make_request(struct request_queue *q, struct bio * bio) unsigned long flags; if (unlikely(bio_barrier(bio))) { - bio_endio(bio, bio->bi_size, -EOPNOTSUPP); + bio_endio(bio, -EOPNOTSUPP); return 0; } @@ -819,7 +812,7 @@ static int make_request(struct request_queue *q, struct bio * bio) " or bigger than %dk %llu %d\n", chunk_sects/2, (unsigned long long)bio->bi_sector, bio->bi_size >> 10); - bio_io_error(bio, bio->bi_size); + bio_io_error(bio); return 0; } @@ -1155,15 +1148,12 @@ abort: } -static int end_sync_read(struct bio *bio, unsigned int bytes_done, int error) +static void end_sync_read(struct bio *bio, int error) { r10bio_t * r10_bio = (r10bio_t *)(bio->bi_private); conf_t *conf = mddev_to_conf(r10_bio->mddev); int i,d; - if (bio->bi_size) - return 1; - for (i=0; icopies; i++) if (r10_bio->devs[i].bio == bio) break; @@ -1192,10 +1182,9 @@ static int end_sync_read(struct bio *bio, unsigned int bytes_done, int error) reschedule_retry(r10_bio); } rdev_dec_pending(conf->mirrors[d].rdev, conf->mddev); - return 0; } -static int end_sync_write(struct bio *bio, unsigned int bytes_done, int error) +static void end_sync_write(struct bio *bio, int error) { int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags); r10bio_t * r10_bio = (r10bio_t *)(bio->bi_private); @@ -1203,9 +1192,6 @@ static int end_sync_write(struct bio *bio, unsigned int bytes_done, int error) conf_t *conf = mddev_to_conf(mddev); int i,d; - if (bio->bi_size) - return 1; - for (i = 0; i < conf->copies; i++) if (r10_bio->devs[i].bio == bio) break; @@ -1228,7 +1214,6 @@ static int end_sync_write(struct bio *bio, unsigned int bytes_done, int error) } } rdev_dec_pending(conf->mirrors[d].rdev, mddev); - return 0; } /* @@ -1374,7 +1359,7 @@ static void recovery_request_write(mddev_t *mddev, r10bio_t *r10_bio) if (test_bit(R10BIO_Uptodate, &r10_bio->state)) generic_make_request(wbio); else - bio_endio(wbio, wbio->bi_size, -EIO); + bio_endio(wbio, -EIO); } diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index f96dea975fa..caaca9e178b 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -108,12 +108,11 @@ static void return_io(struct bio *return_bi) { struct bio *bi = return_bi; while (bi) { - int bytes = bi->bi_size; return_bi = bi->bi_next; bi->bi_next = NULL; bi->bi_size = 0; - bi->bi_end_io(bi, bytes, + bi->bi_end_io(bi, test_bit(BIO_UPTODATE, &bi->bi_flags) ? 0 : -EIO); bi = return_bi; @@ -382,10 +381,10 @@ static unsigned long get_stripe_work(struct stripe_head *sh) return pending; } -static int -raid5_end_read_request(struct bio *bi, unsigned int bytes_done, int error); -static int -raid5_end_write_request (struct bio *bi, unsigned int bytes_done, int error); +static void +raid5_end_read_request(struct bio *bi, int error); +static void +raid5_end_write_request(struct bio *bi, int error); static void ops_run_io(struct stripe_head *sh) { @@ -1110,8 +1109,7 @@ static void shrink_stripes(raid5_conf_t *conf) conf->slab_cache = NULL; } -static int raid5_end_read_request(struct bio * bi, unsigned int bytes_done, - int error) +static void raid5_end_read_request(struct bio * bi, int error) { struct stripe_head *sh = bi->bi_private; raid5_conf_t *conf = sh->raid_conf; @@ -1120,8 +1118,6 @@ static int raid5_end_read_request(struct bio * bi, unsigned int bytes_done, char b[BDEVNAME_SIZE]; mdk_rdev_t *rdev; - if (bi->bi_size) - return 1; for (i=0 ; idev[i].req) @@ -1132,7 +1128,7 @@ static int raid5_end_read_request(struct bio * bi, unsigned int bytes_done, uptodate); if (i == disks) { BUG(); - return 0; + return; } if (uptodate) { @@ -1185,20 +1181,15 @@ static int raid5_end_read_request(struct bio * bi, unsigned int bytes_done, clear_bit(R5_LOCKED, &sh->dev[i].flags); set_bit(STRIPE_HANDLE, &sh->state); release_stripe(sh); - return 0; } -static int raid5_end_write_request (struct bio *bi, unsigned int bytes_done, - int error) +static void raid5_end_write_request (struct bio *bi, int error) { struct stripe_head *sh = bi->bi_private; raid5_conf_t *conf = sh->raid_conf; int disks = sh->disks, i; int uptodate = test_bit(BIO_UPTODATE, &bi->bi_flags); - if (bi->bi_size) - return 1; - for (i=0 ; idev[i].req) break; @@ -1208,7 +1199,7 @@ static int raid5_end_write_request (struct bio *bi, unsigned int bytes_done, uptodate); if (i == disks) { BUG(); - return 0; + return; } if (!uptodate) @@ -1219,7 +1210,6 @@ static int raid5_end_write_request (struct bio *bi, unsigned int bytes_done, clear_bit(R5_LOCKED, &sh->dev[i].flags); set_bit(STRIPE_HANDLE, &sh->state); release_stripe(sh); - return 0; } @@ -3340,7 +3330,7 @@ static struct bio *remove_bio_from_retry(raid5_conf_t *conf) * first). * If the read failed.. */ -static int raid5_align_endio(struct bio *bi, unsigned int bytes, int error) +static void raid5_align_endio(struct bio *bi, int error) { struct bio* raid_bi = bi->bi_private; mddev_t *mddev; @@ -3348,8 +3338,6 @@ static int raid5_align_endio(struct bio *bi, unsigned int bytes, int error) int uptodate = test_bit(BIO_UPTODATE, &bi->bi_flags); mdk_rdev_t *rdev; - if (bi->bi_size) - return 1; bio_put(bi); mddev = raid_bi->bi_bdev->bd_disk->queue->queuedata; @@ -3360,17 +3348,16 @@ static int raid5_align_endio(struct bio *bi, unsigned int bytes, int error) rdev_dec_pending(rdev, conf->mddev); if (!error && uptodate) { - bio_endio(raid_bi, bytes, 0); + bio_endio(raid_bi, 0); if (atomic_dec_and_test(&conf->active_aligned_reads)) wake_up(&conf->wait_for_stripe); - return 0; + return; } pr_debug("raid5_align_endio : io error...handing IO for a retry\n"); add_bio_to_retry(raid_bi, conf); - return 0; } static int bio_fits_rdev(struct bio *bi) @@ -3476,7 +3463,7 @@ static int make_request(struct request_queue *q, struct bio * bi) int remaining; if (unlikely(bio_barrier(bi))) { - bio_endio(bi, bi->bi_size, -EOPNOTSUPP); + bio_endio(bi, -EOPNOTSUPP); return 0; } @@ -3592,12 +3579,11 @@ static int make_request(struct request_queue *q, struct bio * bi) remaining = --bi->bi_phys_segments; spin_unlock_irq(&conf->device_lock); if (remaining == 0) { - int bytes = bi->bi_size; if ( rw == WRITE ) md_write_end(mddev); - bi->bi_size = 0; - bi->bi_end_io(bi, bytes, + + bi->bi_end_io(bi, test_bit(BIO_UPTODATE, &bi->bi_flags) ? 0 : -EIO); } @@ -3875,10 +3861,8 @@ static int retry_aligned_read(raid5_conf_t *conf, struct bio *raid_bio) remaining = --raid_bio->bi_phys_segments; spin_unlock_irq(&conf->device_lock); if (remaining == 0) { - int bytes = raid_bio->bi_size; - raid_bio->bi_size = 0; - raid_bio->bi_end_io(raid_bio, bytes, + raid_bio->bi_end_io(raid_bio, test_bit(BIO_UPTODATE, &raid_bio->bi_flags) ? 0 : -EIO); } diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c index 4d8798bacf9..859f870552e 100644 --- a/drivers/s390/block/dcssblk.c +++ b/drivers/s390/block/dcssblk.c @@ -674,10 +674,10 @@ dcssblk_make_request(struct request_queue *q, struct bio *bio) } bytes_done += bvec->bv_len; } - bio_endio(bio, bytes_done, 0); + bio_endio(bio, 0); return 0; fail: - bio_io_error(bio, bio->bi_size); + bio_io_error(bio); return 0; } diff --git a/drivers/s390/block/xpram.c b/drivers/s390/block/xpram.c index 354a060e5be..0fbacc8b106 100644 --- a/drivers/s390/block/xpram.c +++ b/drivers/s390/block/xpram.c @@ -230,12 +230,10 @@ static int xpram_make_request(struct request_queue *q, struct bio *bio) } } set_bit(BIO_UPTODATE, &bio->bi_flags); - bytes = bio->bi_size; - bio->bi_size = 0; - bio->bi_end_io(bio, bytes, 0); + bio_end_io(bio, 0); return 0; fail: - bio_io_error(bio, bio->bi_size); + bio_io_error(bio); return 0; } diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 59b39853029..604f4d71793 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -266,13 +266,9 @@ static int scsi_merge_bio(struct request *rq, struct bio *bio) return blk_rq_append_bio(q, rq, bio); } -static int scsi_bi_endio(struct bio *bio, unsigned int bytes_done, int error) +static void scsi_bi_endio(struct bio *bio, int error) { - if (bio->bi_size) - return 1; - bio_put(bio); - return 0; } /** @@ -328,7 +324,7 @@ static int scsi_req_map_sg(struct request *rq, struct scatterlist *sgl, if (bio->bi_vcnt >= nr_vecs) { err = scsi_merge_bio(rq, bio); if (err) { - bio_endio(bio, bio->bi_size, 0); + bio_endio(bio, 0); goto free_bios; } bio = NULL; @@ -350,7 +346,7 @@ free_bios: /* * call endio instead of bio_put incase it was bounced */ - bio_endio(bio, bio->bi_size, 0); + bio_endio(bio, 0); } return err; -- cgit v1.2.3 From edec49616c7b4ad7ceb3b936a8d95b10652ee677 Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Mon, 1 Oct 2007 16:33:52 +0200 Subject: Sysace: Use the established platform bus api SystemACE uses the platform bus binding, but it doesn't use the platform bus API. Move to using the correct API for consistency sake and future proofing against platform bus changes. Signed-off-by: Grant Likely Signed-off-by: Jens Axboe --- drivers/block/xsysace.c | 48 ++++++++++++++++++++++++++++++------------------ 1 file changed, 30 insertions(+), 18 deletions(-) (limited to 'drivers') diff --git a/drivers/block/xsysace.c b/drivers/block/xsysace.c index 3ede0b63da1..b10447611af 100644 --- a/drivers/block/xsysace.c +++ b/drivers/block/xsysace.c @@ -1060,13 +1060,12 @@ static void __devexit ace_teardown(struct ace_device *ace) * Platform Bus Support */ -static int __devinit ace_probe(struct device *device) +static int __devinit ace_probe(struct platform_device *dev) { - struct platform_device *dev = to_platform_device(device); struct ace_device *ace; int i; - dev_dbg(device, "ace_probe(%p)\n", device); + dev_dbg(&dev->dev, "ace_probe(%p)\n", dev); /* * Allocate the ace device structure @@ -1075,7 +1074,7 @@ static int __devinit ace_probe(struct device *device) if (!ace) goto err_alloc; - ace->dev = device; + ace->dev = &dev->dev; ace->id = dev->id; ace->irq = NO_IRQ; @@ -1089,7 +1088,7 @@ static int __devinit ace_probe(struct device *device) /* FIXME: Should get bus_width from the platform_device struct */ ace->bus_width = 1; - dev_set_drvdata(&dev->dev, ace); + platform_set_drvdata(dev, ace); /* Call the bus-independant setup code */ if (ace_setup(ace) != 0) @@ -1098,7 +1097,7 @@ static int __devinit ace_probe(struct device *device) return 0; err_setup: - dev_set_drvdata(&dev->dev, NULL); + platform_set_drvdata(dev, NULL); kfree(ace); err_alloc: printk(KERN_ERR "xsysace: could not initialize device\n"); @@ -1108,25 +1107,27 @@ static int __devinit ace_probe(struct device *device) /* * Platform bus remove() method */ -static int __devexit ace_remove(struct device *device) +static int __devexit ace_remove(struct platform_device *dev) { - struct ace_device *ace = dev_get_drvdata(device); - - dev_dbg(device, "ace_remove(%p)\n", device); + struct ace_device *ace = platform_get_drvdata(dev); + dev_dbg(&dev->dev, "ace_remove(%p)\n", dev); if (ace) { ace_teardown(ace); + platform_set_drvdata(dev, NULL); kfree(ace); } return 0; } -static struct device_driver ace_driver = { - .name = "xsysace", - .bus = &platform_bus_type, +static struct platform_driver ace_platform_driver = { .probe = ace_probe, .remove = __devexit_p(ace_remove), + .driver = { + .owner = THIS_MODULE, + .name = "xsysace", + }, }; /* --------------------------------------------------------------------- @@ -1134,20 +1135,31 @@ static struct device_driver ace_driver = { */ static int __init ace_init(void) { + int rc; + ace_major = register_blkdev(ace_major, "xsysace"); if (ace_major <= 0) { - printk(KERN_WARNING "xsysace: register_blkdev() failed\n"); - return ace_major; + rc = -ENOMEM; + goto err_blk; } - pr_debug("Registering Xilinx SystemACE driver, major=%i\n", ace_major); - return driver_register(&ace_driver); + if ((rc = platform_driver_register(&ace_platform_driver)) != 0) + goto err_plat; + + pr_info("Xilinx SystemACE device driver, major=%i\n", ace_major); + return 0; + + err_plat: + unregister_blkdev(ace_major, "xsysace"); + err_blk: + printk(KERN_ERR "xsysace: registration failed; err=%i\n", rc); + return rc; } static void __exit ace_exit(void) { pr_debug("Unregistering Xilinx SystemACE driver\n"); - driver_unregister(&ace_driver); + platform_driver_unregister(&ace_platform_driver); unregister_blkdev(ace_major, "xsysace"); } -- cgit v1.2.3 From 1b455466549f46bab0a75a7a296a9331a38fd6fa Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Mon, 1 Oct 2007 16:33:53 +0200 Subject: Sysace: Move structure allocation from bus binding into common code Split the determination of device registers/irqs/etc from the actual allocation and initialization of the device structure. This cleans up the code a bit in preparation to add an of_platform bus binding Signed-off-by: Grant Likely Signed-off-by: Jens Axboe --- drivers/block/xsysace.c | 99 ++++++++++++++++++++++++++++++------------------- 1 file changed, 61 insertions(+), 38 deletions(-) (limited to 'drivers') diff --git a/drivers/block/xsysace.c b/drivers/block/xsysace.c index b10447611af..555939bd2d5 100644 --- a/drivers/block/xsysace.c +++ b/drivers/block/xsysace.c @@ -1033,7 +1033,7 @@ static int __devinit ace_setup(struct ace_device *ace) if (ace->irq != NO_IRQ) free_irq(ace->irq, ace); err_ioremap: - printk(KERN_INFO "xsysace: error initializing device at 0x%lx\n", + dev_info(ace->dev, "xsysace: error initializing device at 0x%lx\n", ace->physaddr); return -ENOMEM; } @@ -1056,68 +1056,91 @@ static void __devexit ace_teardown(struct ace_device *ace) iounmap(ace->baseaddr); } -/* --------------------------------------------------------------------- - * Platform Bus Support - */ - -static int __devinit ace_probe(struct platform_device *dev) +static int __devinit +ace_alloc(struct device *dev, int id, unsigned long physaddr, + int irq, int bus_width) { struct ace_device *ace; - int i; + int rc; + dev_dbg(dev, "ace_alloc(%p)\n", dev); - dev_dbg(&dev->dev, "ace_probe(%p)\n", dev); + if (!physaddr) { + rc = -ENODEV; + goto err_noreg; + } - /* - * Allocate the ace device structure - */ + /* Allocate and initialize the ace device structure */ ace = kzalloc(sizeof(struct ace_device), GFP_KERNEL); - if (!ace) + if (!ace) { + rc = -ENOMEM; goto err_alloc; - - ace->dev = &dev->dev; - ace->id = dev->id; - ace->irq = NO_IRQ; - - for (i = 0; i < dev->num_resources; i++) { - if (dev->resource[i].flags & IORESOURCE_MEM) - ace->physaddr = dev->resource[i].start; - if (dev->resource[i].flags & IORESOURCE_IRQ) - ace->irq = dev->resource[i].start; } - /* FIXME: Should get bus_width from the platform_device struct */ - ace->bus_width = 1; - - platform_set_drvdata(dev, ace); + ace->dev = dev; + ace->id = id; + ace->physaddr = physaddr; + ace->irq = irq; + ace->bus_width = bus_width; - /* Call the bus-independant setup code */ - if (ace_setup(ace) != 0) + /* Call the setup code */ + if ((rc = ace_setup(ace)) != 0) goto err_setup; + dev_set_drvdata(dev, ace); return 0; err_setup: - platform_set_drvdata(dev, NULL); + dev_set_drvdata(dev, NULL); kfree(ace); err_alloc: - printk(KERN_ERR "xsysace: could not initialize device\n"); - return -ENOMEM; + err_noreg: + dev_err(dev, "could not initialize device, err=%i\n", rc); + return rc; } -/* - * Platform bus remove() method - */ -static int __devexit ace_remove(struct platform_device *dev) +static void __devexit ace_free(struct device *dev) { - struct ace_device *ace = platform_get_drvdata(dev); - dev_dbg(&dev->dev, "ace_remove(%p)\n", dev); + struct ace_device *ace = dev_get_drvdata(dev); + dev_dbg(dev, "ace_free(%p)\n", dev); if (ace) { ace_teardown(ace); - platform_set_drvdata(dev, NULL); + dev_set_drvdata(dev, NULL); kfree(ace); } +} + +/* --------------------------------------------------------------------- + * Platform Bus Support + */ + +static int __devinit ace_probe(struct platform_device *dev) +{ + unsigned long physaddr = 0; + int bus_width = 1; /* FIXME: should not be hard coded */ + int id = dev->id; + int irq = NO_IRQ; + int i; + + dev_dbg(&dev->dev, "ace_probe(%p)\n", dev); + + for (i = 0; i < dev->num_resources; i++) { + if (dev->resource[i].flags & IORESOURCE_MEM) + physaddr = dev->resource[i].start; + if (dev->resource[i].flags & IORESOURCE_IRQ) + irq = dev->resource[i].start; + } + + /* Call the bus-independant setup code */ + return ace_alloc(&dev->dev, id, physaddr, irq, bus_width); +} +/* + * Platform bus remove() method + */ +static int __devexit ace_remove(struct platform_device *dev) +{ + ace_free(&dev->dev); return 0; } -- cgit v1.2.3 From 4a24d8610df542b6599a65b100d438df144574de Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Mon, 1 Oct 2007 16:33:54 +0200 Subject: Sysace: minor rework and cleanup changes Miscellanious rework to the sysace driver; Not critical, but makes the subsequent addition of the of_platform bus binding a wee bit cleaner Signed-off-by: Grant Likely Signed-off-by: Jens Axboe --- drivers/block/xsysace.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/block/xsysace.c b/drivers/block/xsysace.c index 555939bd2d5..10bb4e54f68 100644 --- a/drivers/block/xsysace.c +++ b/drivers/block/xsysace.c @@ -158,6 +158,9 @@ MODULE_LICENSE("GPL"); #define ACE_FIFO_SIZE (32) #define ACE_BUF_PER_SECTOR (ACE_SECTOR_SIZE / ACE_FIFO_SIZE) +#define ACE_BUS_WIDTH_8 0 +#define ACE_BUS_WIDTH_16 1 + struct ace_reg_ops; struct ace_device { @@ -931,9 +934,11 @@ static int __devinit ace_setup(struct ace_device *ace) { u16 version; u16 val; - int rc; + dev_dbg(ace->dev, "ace_setup(ace=0x%p)\n", ace); + dev_dbg(ace->dev, "physaddr=0x%lx irq=%i\n", ace->physaddr, ace->irq); + spin_lock_init(&ace->lock); init_completion(&ace->id_completion); @@ -982,7 +987,7 @@ static int __devinit ace_setup(struct ace_device *ace) snprintf(ace->gd->disk_name, 32, "xs%c", ace->id + 'a'); /* set bus width */ - if (ace->bus_width == 1) { + if (ace->bus_width == ACE_BUS_WIDTH_16) { /* 0x0101 should work regardless of endianess */ ace_out_le16(ace, ACE_BUSMODE, 0x0101); @@ -1117,7 +1122,7 @@ static void __devexit ace_free(struct device *dev) static int __devinit ace_probe(struct platform_device *dev) { unsigned long physaddr = 0; - int bus_width = 1; /* FIXME: should not be hard coded */ + int bus_width = ACE_BUS_WIDTH_16; /* FIXME: should not be hard coded */ int id = dev->id; int irq = NO_IRQ; int i; @@ -1166,6 +1171,7 @@ static int __init ace_init(void) goto err_blk; } + pr_debug("xsysace: registering platform binding\n"); if ((rc = platform_driver_register(&ace_platform_driver)) != 0) goto err_plat; -- cgit v1.2.3 From 32f6fff47df65d25d3dedbd2953508c05225b726 Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Mon, 1 Oct 2007 16:33:54 +0200 Subject: Sysace: Move IRQ handler registration to occur after FSM is initialized The FSM needs to be initialized before it is safe to call the ISR Signed-off-by: Grant Likely Signed-off-by: Jens Axboe --- drivers/block/xsysace.c | 21 ++++++++++----------- 1 file changed, 10 insertions(+), 11 deletions(-) (limited to 'drivers') diff --git a/drivers/block/xsysace.c b/drivers/block/xsysace.c index 10bb4e54f68..296d5674a3c 100644 --- a/drivers/block/xsysace.c +++ b/drivers/block/xsysace.c @@ -949,15 +949,6 @@ static int __devinit ace_setup(struct ace_device *ace) if (!ace->baseaddr) goto err_ioremap; - if (ace->irq != NO_IRQ) { - rc = request_irq(ace->irq, ace_interrupt, 0, "systemace", ace); - if (rc) { - /* Failure - fall back to polled mode */ - dev_err(ace->dev, "request_irq failed\n"); - ace->irq = NO_IRQ; - } - } - /* * Initialize the state machine tasklet and stall timer */ @@ -1015,6 +1006,16 @@ static int __devinit ace_setup(struct ace_device *ace) val |= ACE_CTRL_DATABUFRDYIRQ | ACE_CTRL_ERRORIRQ; ace_out(ace, ACE_CTRL, val); + /* Now we can hook up the irq handler */ + if (ace->irq != NO_IRQ) { + rc = request_irq(ace->irq, ace_interrupt, 0, "systemace", ace); + if (rc) { + /* Failure - fall back to polled mode */ + dev_err(ace->dev, "request_irq failed\n"); + ace->irq = NO_IRQ; + } + } + /* Print the identification */ dev_info(ace->dev, "Xilinx SystemACE revision %i.%i.%i\n", (version >> 12) & 0xf, (version >> 8) & 0x0f, version & 0xff); @@ -1035,8 +1036,6 @@ static int __devinit ace_setup(struct ace_device *ace) blk_cleanup_queue(ace->queue); err_blk_initq: iounmap(ace->baseaddr); - if (ace->irq != NO_IRQ) - free_irq(ace->irq, ace); err_ioremap: dev_info(ace->dev, "xsysace: error initializing device at 0x%lx\n", ace->physaddr); -- cgit v1.2.3 From 95e896c35f3c3157159b89682b60281640b5d148 Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Mon, 1 Oct 2007 16:33:55 +0200 Subject: Sysace: Add of_platform_bus binding The of_platform bus binding is needed to make the device driver usable under arch/powerpc. Signed-off-by: Grant Likely Signed-off-by: Jens Axboe --- drivers/block/xsysace.c | 89 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 89 insertions(+) (limited to 'drivers') diff --git a/drivers/block/xsysace.c b/drivers/block/xsysace.c index 296d5674a3c..56c4af3c2ed 100644 --- a/drivers/block/xsysace.c +++ b/drivers/block/xsysace.c @@ -91,6 +91,10 @@ #include #include #include +#if defined(CONFIG_OF) +#include +#include +#endif MODULE_AUTHOR("Grant Likely "); MODULE_DESCRIPTION("Xilinx SystemACE device driver"); @@ -1157,6 +1161,85 @@ static struct platform_driver ace_platform_driver = { }, }; +/* --------------------------------------------------------------------- + * OF_Platform Bus Support + */ + +#if defined(CONFIG_OF) +static int __devinit +ace_of_probe(struct of_device *op, const struct of_device_id *match) +{ + struct resource res; + unsigned long physaddr; + const u32 *id; + int irq, bus_width, rc; + + dev_dbg(&op->dev, "ace_of_probe(%p, %p)\n", op, match); + + /* device id */ + id = of_get_property(op->node, "port-number", NULL); + + /* physaddr */ + rc = of_address_to_resource(op->node, 0, &res); + if (rc) { + dev_err(&op->dev, "invalid address\n"); + return rc; + } + physaddr = res.start; + + /* irq */ + irq = irq_of_parse_and_map(op->node, 0); + + /* bus width */ + bus_width = ACE_BUS_WIDTH_16; + if (of_find_property(op->node, "8-bit", NULL)) + bus_width = ACE_BUS_WIDTH_8; + + /* Call the bus-independant setup code */ + return ace_alloc(&op->dev, id ? *id : 0, physaddr, irq, bus_width); +} + +static int __devexit ace_of_remove(struct of_device *op) +{ + ace_free(&op->dev); + return 0; +} + +/* Match table for of_platform binding */ +static struct of_device_id __devinit ace_of_match[] = { + { .compatible = "xilinx,xsysace", }, + {}, +}; +MODULE_DEVICE_TABLE(of, ace_of_match); + +static struct of_platform_driver ace_of_driver = { + .owner = THIS_MODULE, + .name = "xsysace", + .match_table = ace_of_match, + .probe = ace_of_probe, + .remove = __devexit_p(ace_of_remove), + .driver = { + .name = "xsysace", + }, +}; + +/* Registration helpers to keep the number of #ifdefs to a minimum */ +static inline int __init ace_of_register(void) +{ + pr_debug("xsysace: registering OF binding\n"); + return of_register_platform_driver(&ace_of_driver); +} + +static inline void __exit ace_of_unregister(void) +{ + of_unregister_platform_driver(&ace_of_driver); +} +#else /* CONFIG_OF */ +/* CONFIG_OF not enabled; do nothing helpers */ +static inline int __init ace_of_register(void) { return 0; } +static inline void __exit ace_of_unregister(void) { } +#endif /* CONFIG_OF */ + /* --------------------------------------------------------------------- * Module init/exit routines */ @@ -1170,6 +1253,9 @@ static int __init ace_init(void) goto err_blk; } + if ((rc = ace_of_register()) != 0) + goto err_of; + pr_debug("xsysace: registering platform binding\n"); if ((rc = platform_driver_register(&ace_platform_driver)) != 0) goto err_plat; @@ -1178,6 +1264,8 @@ static int __init ace_init(void) return 0; err_plat: + ace_of_unregister(); + err_of: unregister_blkdev(ace_major, "xsysace"); err_blk: printk(KERN_ERR "xsysace: registration failed; err=%i\n", rc); @@ -1188,6 +1276,7 @@ static void __exit ace_exit(void) { pr_debug("Unregistering Xilinx SystemACE driver\n"); platform_driver_unregister(&ace_platform_driver); + ace_of_unregister(); unregister_blkdev(ace_major, "xsysace"); } -- cgit v1.2.3 From ed155a95a4eb7d8dae61b64ab394314c5195e414 Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Mon, 1 Oct 2007 16:33:56 +0200 Subject: Sysace: Labels in C code should not be indented. Remove the indentation on labels Signed-off-by: Grant Likely Signed-off-by: Jens Axboe --- drivers/block/xsysace.c | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) (limited to 'drivers') diff --git a/drivers/block/xsysace.c b/drivers/block/xsysace.c index 56c4af3c2ed..3ea172b7b7a 100644 --- a/drivers/block/xsysace.c +++ b/drivers/block/xsysace.c @@ -1034,13 +1034,13 @@ static int __devinit ace_setup(struct ace_device *ace) return 0; - err_read: +err_read: put_disk(ace->gd); - err_alloc_disk: +err_alloc_disk: blk_cleanup_queue(ace->queue); - err_blk_initq: +err_blk_initq: iounmap(ace->baseaddr); - err_ioremap: +err_ioremap: dev_info(ace->dev, "xsysace: error initializing device at 0x%lx\n", ace->physaddr); return -ENOMEM; @@ -1097,11 +1097,11 @@ ace_alloc(struct device *dev, int id, unsigned long physaddr, dev_set_drvdata(dev, ace); return 0; - err_setup: +err_setup: dev_set_drvdata(dev, NULL); kfree(ace); - err_alloc: - err_noreg: +err_alloc: +err_noreg: dev_err(dev, "could not initialize device, err=%i\n", rc); return rc; } @@ -1263,11 +1263,11 @@ static int __init ace_init(void) pr_info("Xilinx SystemACE device driver, major=%i\n", ace_major); return 0; - err_plat: +err_plat: ace_of_unregister(); - err_of: +err_of: unregister_blkdev(ace_major, "xsysace"); - err_blk: +err_blk: printk(KERN_ERR "xsysace: registration failed; err=%i\n", rc); return rc; } -- cgit v1.2.3 From 3084f0c6105a71e43225c36b4d97c1407988a242 Mon Sep 17 00:00:00 2001 From: Jeff Garzik Date: Thu, 27 Sep 2007 06:25:06 -0400 Subject: drivers/block/umem: move private include away from include/linux Move include/linux/umem.h to drivers/block, as umem.c is the only user, and its not an exported header. Move the PCI_{VENDOR,DEVICE}_ID_* constants to include/linux/pci_ids.h. Signed-off-by: Jeff Garzik --- drivers/block/umem.c | 2 +- drivers/block/umem.h | 133 +++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 134 insertions(+), 1 deletion(-) create mode 100644 drivers/block/umem.h (limited to 'drivers') diff --git a/drivers/block/umem.c b/drivers/block/umem.c index be7fac86725..33ef7661e1c 100644 --- a/drivers/block/umem.c +++ b/drivers/block/umem.c @@ -52,7 +52,7 @@ #include /* O_ACCMODE */ #include /* HDIO_GETGEO */ -#include +#include "umem.h" #include #include diff --git a/drivers/block/umem.h b/drivers/block/umem.h new file mode 100644 index 00000000000..3a3819afed9 --- /dev/null +++ b/drivers/block/umem.h @@ -0,0 +1,133 @@ + +/* + * This file contains defines for the + * Micro Memory MM5415 + * family PCI Memory Module with Battery Backup. + * + * Copyright Micro Memory INC 2001. All rights reserved. + * Release under the terms of the GNU GENERAL PUBLIC LICENSE version 2. + * See the file COPYING. + */ + +#ifndef _DRIVERS_BLOCK_MM_H +#define _DRIVERS_BLOCK_MM_H + + +#define IRQ_TIMEOUT (1 * HZ) + +/* CSR register definition */ +#define MEMCTRLSTATUS_MAGIC 0x00 +#define MM_MAGIC_VALUE (unsigned char)0x59 + +#define MEMCTRLSTATUS_BATTERY 0x04 +#define BATTERY_1_DISABLED 0x01 +#define BATTERY_1_FAILURE 0x02 +#define BATTERY_2_DISABLED 0x04 +#define BATTERY_2_FAILURE 0x08 + +#define MEMCTRLSTATUS_MEMORY 0x07 +#define MEM_128_MB 0xfe +#define MEM_256_MB 0xfc +#define MEM_512_MB 0xf8 +#define MEM_1_GB 0xf0 +#define MEM_2_GB 0xe0 + +#define MEMCTRLCMD_LEDCTRL 0x08 +#define LED_REMOVE 2 +#define LED_FAULT 4 +#define LED_POWER 6 +#define LED_FLIP 255 +#define LED_OFF 0x00 +#define LED_ON 0x01 +#define LED_FLASH_3_5 0x02 +#define LED_FLASH_7_0 0x03 +#define LED_POWER_ON 0x00 +#define LED_POWER_OFF 0x01 +#define USER_BIT1 0x01 +#define USER_BIT2 0x02 + +#define MEMORY_INITIALIZED USER_BIT1 + +#define MEMCTRLCMD_ERRCTRL 0x0C +#define EDC_NONE_DEFAULT 0x00 +#define EDC_NONE 0x01 +#define EDC_STORE_READ 0x02 +#define EDC_STORE_CORRECT 0x03 + +#define MEMCTRLCMD_ERRCNT 0x0D +#define MEMCTRLCMD_ERRSTATUS 0x0E + +#define ERROR_DATA_LOG 0x20 +#define ERROR_ADDR_LOG 0x28 +#define ERROR_COUNT 0x3D +#define ERROR_SYNDROME 0x3E +#define ERROR_CHECK 0x3F + +#define DMA_PCI_ADDR 0x40 +#define DMA_LOCAL_ADDR 0x48 +#define DMA_TRANSFER_SIZE 0x50 +#define DMA_DESCRIPTOR_ADDR 0x58 +#define DMA_SEMAPHORE_ADDR 0x60 +#define DMA_STATUS_CTRL 0x68 +#define DMASCR_GO 0x00001 +#define DMASCR_TRANSFER_READ 0x00002 +#define DMASCR_CHAIN_EN 0x00004 +#define DMASCR_SEM_EN 0x00010 +#define DMASCR_DMA_COMP_EN 0x00020 +#define DMASCR_CHAIN_COMP_EN 0x00040 +#define DMASCR_ERR_INT_EN 0x00080 +#define DMASCR_PARITY_INT_EN 0x00100 +#define DMASCR_ANY_ERR 0x00800 +#define DMASCR_MBE_ERR 0x01000 +#define DMASCR_PARITY_ERR_REP 0x02000 +#define DMASCR_PARITY_ERR_DET 0x04000 +#define DMASCR_SYSTEM_ERR_SIG 0x08000 +#define DMASCR_TARGET_ABT 0x10000 +#define DMASCR_MASTER_ABT 0x20000 +#define DMASCR_DMA_COMPLETE 0x40000 +#define DMASCR_CHAIN_COMPLETE 0x80000 + +/* +3.SOME PCs HAVE HOST BRIDGES WHICH APPARENTLY DO NOT CORRECTLY HANDLE +READ-LINE (0xE) OR READ-MULTIPLE (0xC) PCI COMMAND CODES DURING DMA +TRANSFERS. IN OTHER SYSTEMS THESE COMMAND CODES WILL CAUSE THE HOST BRIDGE +TO ALLOW LONGER BURSTS DURING DMA READ OPERATIONS. THE UPPER FOUR BITS +(31..28) OF THE DMA CSR HAVE BEEN MADE PROGRAMMABLE, SO THAT EITHER A 0x6, +AN 0xE OR A 0xC CAN BE WRITTEN TO THEM TO SET THE COMMAND CODE USED DURING +DMA READ OPERATIONS. +*/ +#define DMASCR_READ 0x60000000 +#define DMASCR_READLINE 0xE0000000 +#define DMASCR_READMULTI 0xC0000000 + + +#define DMASCR_ERROR_MASK (DMASCR_MASTER_ABT | DMASCR_TARGET_ABT | DMASCR_SYSTEM_ERR_SIG | DMASCR_PARITY_ERR_DET | DMASCR_MBE_ERR | DMASCR_ANY_ERR) +#define DMASCR_HARD_ERROR (DMASCR_MASTER_ABT | DMASCR_TARGET_ABT | DMASCR_SYSTEM_ERR_SIG | DMASCR_PARITY_ERR_DET | DMASCR_MBE_ERR) + +#define WINDOWMAP_WINNUM 0x7B + +#define DMA_READ_FROM_HOST 0 +#define DMA_WRITE_TO_HOST 1 + +struct mm_dma_desc { + __le64 pci_addr; + __le64 local_addr; + __le32 transfer_size; + u32 zero1; + __le64 next_desc_addr; + __le64 sem_addr; + __le32 control_bits; + u32 zero2; + + dma_addr_t data_dma_handle; + + /* Copy of the bits */ + __le64 sem_control_bits; +} __attribute__((aligned(8))); + +/* bits for card->flags */ +#define UM_FLAG_DMA_IN_REGS 1 +#define UM_FLAG_NO_BYTE_STATUS 2 +#define UM_FLAG_NO_BATTREG 4 +#define UM_FLAG_NO_BATT 8 +#endif -- cgit v1.2.3 From 4e0af881afee2b399854b1cdfdbe37e6ab6a09ca Mon Sep 17 00:00:00 2001 From: Jeff Garzik Date: Thu, 27 Sep 2007 06:41:25 -0400 Subject: drivers/block/umem: use dev_printk() dev_printk() gives us a consistent prefix (driver name + PCI bus id), which allows us to eliminate the hand-rolled one. Also allows us to eliminate card->card_number, which was used solely in printk() calls. Signed-off-by: Jeff Garzik --- drivers/block/umem.c | 111 ++++++++++++++++++++++++++++----------------------- 1 file changed, 62 insertions(+), 49 deletions(-) (limited to 'drivers') diff --git a/drivers/block/umem.c b/drivers/block/umem.c index 33ef7661e1c..32060b84c0f 100644 --- a/drivers/block/umem.c +++ b/drivers/block/umem.c @@ -97,7 +97,6 @@ static int major_nr; #include struct cardinfo { - int card_number; struct pci_dev *dev; int irq; @@ -236,7 +235,7 @@ static void dump_regs(struct cardinfo *card) */ static void dump_dmastat(struct cardinfo *card, unsigned int dmastat) { - printk(KERN_DEBUG "MM%d*: DMAstat - ", card->card_number); + dev_printk(KERN_DEBUG, &card->dev->dev, "DMAstat - "); if (dmastat & DMASCR_ANY_ERR) printk("ANY_ERR "); if (dmastat & DMASCR_MBE_ERR) @@ -499,17 +498,17 @@ static void process_page(unsigned long data) if (control & DMASCR_HARD_ERROR) { /* error */ clear_bit(BIO_UPTODATE, &bio->bi_flags); - printk(KERN_WARNING "MM%d: I/O error on sector %d/%d\n", - card->card_number, - le32_to_cpu(desc->local_addr)>>9, - le32_to_cpu(desc->transfer_size)); + dev_printk(KERN_WARNING, &card->dev->dev, + "I/O error on sector %d/%d\n", + le32_to_cpu(desc->local_addr)>>9, + le32_to_cpu(desc->transfer_size)); dump_dmastat(card, control); } else if (test_bit(BIO_RW, &bio->bi_rw) && le32_to_cpu(desc->local_addr)>>9 == card->init_size) { card->init_size += le32_to_cpu(desc->transfer_size)>>9; if (card->init_size>>1 >= card->mm_size) { - printk(KERN_INFO "MM%d: memory now initialised\n", - card->card_number); + dev_printk(KERN_INFO, &card->dev->dev, + "memory now initialised\n"); set_userbit(card, MEMORY_INITIALIZED, 1); } } @@ -618,46 +617,51 @@ HW_TRACE(0x30); dump_dmastat(card, dma_status); if (stat & 0x01) - printk(KERN_ERR "MM%d*: Memory access error detected (err count %d)\n", - card->card_number, count); + dev_printk(KERN_ERR, &card->dev->dev, + "Memory access error detected (err count %d)\n", + count); if (stat & 0x02) - printk(KERN_ERR "MM%d*: Multi-bit EDC error\n", - card->card_number); + dev_printk(KERN_ERR, &card->dev->dev, + "Multi-bit EDC error\n"); - printk(KERN_ERR "MM%d*: Fault Address 0x%02x%08x, Fault Data 0x%08x%08x\n", - card->card_number, addr_log2, addr_log1, data_log2, data_log1); - printk(KERN_ERR "MM%d*: Fault Check 0x%02x, Fault Syndrome 0x%02x\n", - card->card_number, check, syndrome); + dev_printk(KERN_ERR, &card->dev->dev, + "Fault Address 0x%02x%08x, Fault Data 0x%08x%08x\n", + addr_log2, addr_log1, data_log2, data_log1); + dev_printk(KERN_ERR, &card->dev->dev, + "Fault Check 0x%02x, Fault Syndrome 0x%02x\n", + check, syndrome); writeb(0, card->csr_remap + ERROR_COUNT); } if (dma_status & DMASCR_PARITY_ERR_REP) { - printk(KERN_ERR "MM%d*: PARITY ERROR REPORTED\n", card->card_number); + dev_printk(KERN_ERR, &card->dev->dev, + "PARITY ERROR REPORTED\n"); pci_read_config_word(card->dev, PCI_STATUS, &cfg_status); pci_write_config_word(card->dev, PCI_STATUS, cfg_status); } if (dma_status & DMASCR_PARITY_ERR_DET) { - printk(KERN_ERR "MM%d*: PARITY ERROR DETECTED\n", card->card_number); + dev_printk(KERN_ERR, &card->dev->dev, + "PARITY ERROR DETECTED\n"); pci_read_config_word(card->dev, PCI_STATUS, &cfg_status); pci_write_config_word(card->dev, PCI_STATUS, cfg_status); } if (dma_status & DMASCR_SYSTEM_ERR_SIG) { - printk(KERN_ERR "MM%d*: SYSTEM ERROR\n", card->card_number); + dev_printk(KERN_ERR, &card->dev->dev, "SYSTEM ERROR\n"); pci_read_config_word(card->dev, PCI_STATUS, &cfg_status); pci_write_config_word(card->dev, PCI_STATUS, cfg_status); } if (dma_status & DMASCR_TARGET_ABT) { - printk(KERN_ERR "MM%d*: TARGET ABORT\n", card->card_number); + dev_printk(KERN_ERR, &card->dev->dev, "TARGET ABORT\n"); pci_read_config_word(card->dev, PCI_STATUS, &cfg_status); pci_write_config_word(card->dev, PCI_STATUS, cfg_status); } if (dma_status & DMASCR_MASTER_ABT) { - printk(KERN_ERR "MM%d*: MASTER ABORT\n", card->card_number); + dev_printk(KERN_ERR, &card->dev->dev, "MASTER ABORT\n"); pci_read_config_word(card->dev, PCI_STATUS, &cfg_status); pci_write_config_word(card->dev, PCI_STATUS, cfg_status); } @@ -708,20 +712,20 @@ static int check_battery(struct cardinfo *card, int battery, int status) card->battery[battery].last_change = jiffies; if (card->battery[battery].good) { - printk(KERN_ERR "MM%d: Battery %d now good\n", - card->card_number, battery + 1); + dev_printk(KERN_ERR, &card->dev->dev, + "Battery %d now good\n", battery + 1); card->battery[battery].warned = 0; } else - printk(KERN_ERR "MM%d: Battery %d now FAILED\n", - card->card_number, battery + 1); + dev_printk(KERN_ERR, &card->dev->dev, + "Battery %d now FAILED\n", battery + 1); return 1; } else if (!card->battery[battery].good && !card->battery[battery].warned && time_after_eq(jiffies, card->battery[battery].last_change + (HZ * 60 * 60 * 5))) { - printk(KERN_ERR "MM%d: Battery %d still FAILED after 5 hours\n", - card->card_number, battery + 1); + dev_printk(KERN_ERR, &card->dev->dev, + "Battery %d still FAILED after 5 hours\n", battery + 1); card->battery[battery].warned = 1; return 1; @@ -745,8 +749,8 @@ static void check_batteries(struct cardinfo *card) status = readb(card->csr_remap + MEMCTRLSTATUS_BATTERY); if (debug & DEBUG_BATTERY_POLLING) - printk(KERN_DEBUG "MM%d: checking battery status, 1 = %s, 2 = %s\n", - card->card_number, + dev_printk(KERN_DEBUG, &card->dev->dev, + "checking battery status, 1 = %s, 2 = %s\n", (status & BATTERY_1_FAILURE) ? "FAILURE" : "OK", (status & BATTERY_2_FAILURE) ? "FAILURE" : "OK"); @@ -866,6 +870,10 @@ static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_i unsigned char batt_status; unsigned int saved_bar, data; int magic_number; + static int printed_version; + + if (!printed_version++) + printk(KERN_INFO DRIVER_VERSION " : " DRIVER_DESC "\n"); if (pci_enable_device(dev) < 0) return -ENODEV; @@ -874,21 +882,21 @@ static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_i pci_set_master(dev); card->dev = dev; - card->card_number = num_cards; card->csr_base = pci_resource_start(dev, 0); card->csr_len = pci_resource_len(dev, 0); - printk(KERN_INFO "Micro Memory(tm) controller #%d found at %02x:%02x (PCI Mem Module (Battery Backup))\n", - card->card_number, dev->bus->number, dev->devfn); + dev_printk(KERN_INFO, &dev->dev, + "Micro Memory(tm) controller found (PCI Mem Module (Battery Backup))\n"); if (pci_set_dma_mask(dev, DMA_64BIT_MASK) && pci_set_dma_mask(dev, DMA_32BIT_MASK)) { - printk(KERN_WARNING "MM%d: NO suitable DMA found\n",num_cards); + dev_printk(KERN_WARNING, &dev->dev, "NO suitable DMA found\n"); return -ENOMEM; } if (!request_mem_region(card->csr_base, card->csr_len, "Micro Memory")) { - printk(KERN_ERR "MM%d: Unable to request memory region\n", card->card_number); + dev_printk(KERN_ERR, &card->dev->dev, + "Unable to request memory region\n"); ret = -ENOMEM; goto failed_req_csr; @@ -896,13 +904,15 @@ static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_i card->csr_remap = ioremap_nocache(card->csr_base, card->csr_len); if (!card->csr_remap) { - printk(KERN_ERR "MM%d: Unable to remap memory region\n", card->card_number); + dev_printk(KERN_ERR, &card->dev->dev, + "Unable to remap memory region\n"); ret = -ENOMEM; goto failed_remap_csr; } - printk(KERN_INFO "MM%d: CSR 0x%08lx -> 0x%p (0x%lx)\n", card->card_number, + dev_printk(KERN_INFO, &card->dev->dev, + "CSR 0x%08lx -> 0x%p (0x%lx)\n", card->csr_base, card->csr_remap, card->csr_len); switch(card->dev->device) { @@ -927,7 +937,7 @@ static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_i } if (readb(card->csr_remap + MEMCTRLSTATUS_MAGIC) != magic_number) { - printk(KERN_ERR "MM%d: Magic number invalid\n", card->card_number); + dev_printk(KERN_ERR, &card->dev->dev, "Magic number invalid\n"); ret = -ENOMEM; goto failed_magic; } @@ -940,7 +950,7 @@ static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_i &card->mm_pages[1].page_dma); if (card->mm_pages[0].desc == NULL || card->mm_pages[1].desc == NULL) { - printk(KERN_ERR "MM%d: alloc failed\n", card->card_number); + dev_printk(KERN_ERR, &card->dev->dev, "alloc failed\n"); goto failed_alloc; } reset_page(&card->mm_pages[0]); @@ -995,11 +1005,12 @@ static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_i card->battery[0].last_change = card->battery[1].last_change = jiffies; if (card->flags & UM_FLAG_NO_BATT) - printk(KERN_INFO "MM%d: Size %d KB\n", - card->card_number, card->mm_size); + dev_printk(KERN_INFO, &card->dev->dev, + "Size %d KB\n", card->mm_size); else { - printk(KERN_INFO "MM%d: Size %d KB, Battery 1 %s (%s), Battery 2 %s (%s)\n", - card->card_number, card->mm_size, + dev_printk(KERN_INFO, &card->dev->dev, + "Size %d KB, Battery 1 %s (%s), Battery 2 %s (%s)\n", + card->mm_size, (batt_status & BATTERY_1_DISABLED ? "Disabled" : "Enabled"), card->battery[0].good ? "OK" : "FAILURE", (batt_status & BATTERY_2_DISABLED ? "Disabled" : "Enabled"), @@ -1021,14 +1032,16 @@ static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_i if (request_irq(dev->irq, mm_interrupt, IRQF_SHARED, "pci-umem", card)) { - printk(KERN_ERR "MM%d: Unable to allocate IRQ\n", card->card_number); + dev_printk(KERN_ERR, &card->dev->dev, + "Unable to allocate IRQ\n"); ret = -ENODEV; goto failed_req_irq; } card->irq = dev->irq; - printk(KERN_INFO "MM%d: Window size %d bytes, IRQ %d\n", card->card_number, + dev_printk(KERN_INFO, &card->dev->dev, + "Window size %d bytes, IRQ %d\n", card->win_size, card->irq); spin_lock_init(&card->lock); @@ -1049,10 +1062,12 @@ static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_i num_cards++; if (!get_userbit(card, MEMORY_INITIALIZED)) { - printk(KERN_INFO "MM%d: memory NOT initialized. Consider over-writing whole device.\n", card->card_number); + dev_printk(KERN_INFO, &card->dev->dev, + "memory NOT initialized. Consider over-writing whole device.\n"); card->init_size = 0; } else { - printk(KERN_INFO "MM%d: memory already initialized\n", card->card_number); + dev_printk(KERN_INFO, &card->dev->dev, + "memory already initialized\n"); card->init_size = card->mm_size; } @@ -1137,8 +1152,6 @@ static int __init mm_init(void) int retval, i; int err; - printk(KERN_INFO DRIVER_VERSION " : " DRIVER_DESC "\n"); - retval = pci_register_driver(&mm_pci_driver); if (retval) return -ENOMEM; @@ -1169,7 +1182,7 @@ static int __init mm_init(void) } init_battery_timer(); - printk("MM: desc_per_page = %ld\n", DESC_PER_PAGE); + printk(KERN_INFO "MM: desc_per_page = %ld\n", DESC_PER_PAGE); /* printk("mm_init: Done. 10-19-01 9:00\n"); */ return 0; -- cgit v1.2.3 From ee4a7b6874469244ed0e3b8fde20028e0bb52642 Mon Sep 17 00:00:00 2001 From: Jeff Garzik Date: Thu, 27 Sep 2007 07:40:33 -0400 Subject: drivers/block/umem: minor cleanups * tab-align DRIVER_*, pci_driver entries * reduced wasted memory by killing unused struct cardinfo members * move free_irq() call above resource unmap, to fix tiny window where irq handler may access recently-unmapped memory * propagate pci_enable_device() return value * use pci_request_regions, pci_release_regions() for resource reservation * call pci_disable_device() in pci_driver::remove() Signed-off-by: Jeff Garzik --- drivers/block/umem.c | 59 ++++++++++++++++++++++++++-------------------------- 1 file changed, 29 insertions(+), 30 deletions(-) (limited to 'drivers') diff --git a/drivers/block/umem.c b/drivers/block/umem.c index 32060b84c0f..97c5dc9436a 100644 --- a/drivers/block/umem.c +++ b/drivers/block/umem.c @@ -67,9 +67,10 @@ * Version Information */ -#define DRIVER_VERSION "v2.3" -#define DRIVER_AUTHOR "San Mehat, Johannes Erdfelt, NeilBrown" -#define DRIVER_DESC "Micro Memory(tm) PCI memory board block driver" +#define DRIVER_NAME "umem" +#define DRIVER_VERSION "v2.3" +#define DRIVER_AUTHOR "San Mehat, Johannes Erdfelt, NeilBrown" +#define DRIVER_DESC "Micro Memory(tm) PCI memory board block driver" static int debug; /* #define HW_TRACE(x) writeb(x,cards[0].csr_remap + MEMCTRLSTATUS_MAGIC) */ @@ -99,12 +100,7 @@ static int major_nr; struct cardinfo { struct pci_dev *dev; - int irq; - - unsigned long csr_base; unsigned char __iomem *csr_remap; - unsigned long csr_len; - unsigned int win_size; /* PCI window size */ unsigned int mm_size; /* size in kbytes */ unsigned int init_size; /* initial segment, in sectors, @@ -869,22 +865,27 @@ static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_i unsigned char mem_present; unsigned char batt_status; unsigned int saved_bar, data; + unsigned long csr_base; + unsigned long csr_len; int magic_number; static int printed_version; if (!printed_version++) printk(KERN_INFO DRIVER_VERSION " : " DRIVER_DESC "\n"); - if (pci_enable_device(dev) < 0) - return -ENODEV; + ret = pci_enable_device(dev); + if (ret) + return ret; pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0xF8); pci_set_master(dev); card->dev = dev; - card->csr_base = pci_resource_start(dev, 0); - card->csr_len = pci_resource_len(dev, 0); + csr_base = pci_resource_start(dev, 0); + csr_len = pci_resource_len(dev, 0); + if (!csr_base || !csr_len) + return -ENODEV; dev_printk(KERN_INFO, &dev->dev, "Micro Memory(tm) controller found (PCI Mem Module (Battery Backup))\n"); @@ -894,15 +895,15 @@ static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_i dev_printk(KERN_WARNING, &dev->dev, "NO suitable DMA found\n"); return -ENOMEM; } - if (!request_mem_region(card->csr_base, card->csr_len, "Micro Memory")) { + + ret = pci_request_regions(dev, DRIVER_NAME); + if (ret) { dev_printk(KERN_ERR, &card->dev->dev, "Unable to request memory region\n"); - ret = -ENOMEM; - goto failed_req_csr; } - card->csr_remap = ioremap_nocache(card->csr_base, card->csr_len); + card->csr_remap = ioremap_nocache(csr_base, csr_len); if (!card->csr_remap) { dev_printk(KERN_ERR, &card->dev->dev, "Unable to remap memory region\n"); @@ -913,7 +914,7 @@ static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_i dev_printk(KERN_INFO, &card->dev->dev, "CSR 0x%08lx -> 0x%p (0x%lx)\n", - card->csr_base, card->csr_remap, card->csr_len); + csr_base, card->csr_remap, csr_len); switch(card->dev->device) { case 0x5415: @@ -1028,9 +1029,6 @@ static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_i data = ~data; data += 1; - card->win_size = data; - - if (request_irq(dev->irq, mm_interrupt, IRQF_SHARED, "pci-umem", card)) { dev_printk(KERN_ERR, &card->dev->dev, "Unable to allocate IRQ\n"); @@ -1039,10 +1037,8 @@ static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_i goto failed_req_irq; } - card->irq = dev->irq; dev_printk(KERN_INFO, &card->dev->dev, - "Window size %d bytes, IRQ %d\n", - card->win_size, card->irq); + "Window size %d bytes, IRQ %d\n", data, dev->irq); spin_lock_init(&card->lock); @@ -1089,7 +1085,7 @@ static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_i failed_magic: iounmap(card->csr_remap); failed_remap_csr: - release_mem_region(card->csr_base, card->csr_len); + pci_release_regions(dev); failed_req_csr: return ret; @@ -1104,9 +1100,8 @@ static void mm_pci_remove(struct pci_dev *dev) struct cardinfo *card = pci_get_drvdata(dev); tasklet_kill(&card->tasklet); + free_irq(dev->irq, card); iounmap(card->csr_remap); - release_mem_region(card->csr_base, card->csr_len); - free_irq(card->irq, card); if (card->mm_pages[0].desc) pci_free_consistent(card->dev, PAGE_SIZE*2, @@ -1117,6 +1112,9 @@ static void mm_pci_remove(struct pci_dev *dev) card->mm_pages[1].desc, card->mm_pages[1].page_dma); blk_cleanup_queue(card->queue); + + pci_release_regions(dev); + pci_disable_device(dev); } static const struct pci_device_id mm_pci_ids[] = { @@ -1136,11 +1134,12 @@ static const struct pci_device_id mm_pci_ids[] = { MODULE_DEVICE_TABLE(pci, mm_pci_ids); static struct pci_driver mm_pci_driver = { - .name = "umem", - .id_table = mm_pci_ids, - .probe = mm_pci_probe, - .remove = mm_pci_remove, + .name = DRIVER_NAME, + .id_table = mm_pci_ids, + .probe = mm_pci_probe, + .remove = mm_pci_remove, }; + /* ----------------------------------------------------------------------------------- -- mm_init -- cgit v1.2.3 From 4e953a216265f8646360fa909bdc87ea4bf446b3 Mon Sep 17 00:00:00 2001 From: Jeff Garzik Date: Thu, 27 Sep 2007 07:41:50 -0400 Subject: drivers/block/umem: trim trailing whitespace Signed-off-by: Jeff Garzik --- drivers/block/umem.c | 22 +++++++++++----------- drivers/block/umem.h | 14 +++++++------- 2 files changed, 18 insertions(+), 18 deletions(-) (limited to 'drivers') diff --git a/drivers/block/umem.c b/drivers/block/umem.c index 97c5dc9436a..25104176369 100644 --- a/drivers/block/umem.c +++ b/drivers/block/umem.c @@ -293,7 +293,7 @@ static void mm_start_io(struct cardinfo *card) desc->control_bits &= ~cpu_to_le32(DMASCR_CHAIN_EN); desc->sem_control_bits = desc->control_bits; - + if (debug & DEBUG_LED_ON_TRANSFER) set_led(card, LED_REMOVE, LED_ON); @@ -327,7 +327,7 @@ static int add_bio(struct cardinfo *card); static void activate(struct cardinfo *card) { - /* if No page is Active, and Ready is + /* if No page is Active, and Ready is * not empty, then switch Ready page * to active and start IO. * Then add any bh's that are available to Ready @@ -366,7 +366,7 @@ static void mm_unplug_device(struct request_queue *q) spin_unlock_irqrestore(&card->lock, flags); } -/* +/* * If there is room on Ready page, take * one bh off list and add it. * return 1 if there was room, else 0. @@ -467,7 +467,7 @@ static void process_page(unsigned long data) if (card->Active < 0) goto out_unlock; page = &card->mm_pages[card->Active]; - + while (page->headcnt < page->cnt) { struct bio *bio = page->bio; struct mm_dma_desc *desc = &page->desc[page->headcnt]; @@ -477,7 +477,7 @@ static void process_page(unsigned long data) if (!(control & DMASCR_DMA_COMPLETE)) { control = dma_status; - last=1; + last=1; } page->headcnt++; idx = page->idx; @@ -487,7 +487,7 @@ static void process_page(unsigned long data) page->idx = page->bio->bi_idx; } - pci_unmap_page(card->dev, desc->data_dma_handle, + pci_unmap_page(card->dev, desc->data_dma_handle, bio_iovec_idx(bio,idx)->bv_len, (control& DMASCR_TRANSFER_READ) ? PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE); @@ -592,7 +592,7 @@ HW_TRACE(0x30); else writeb((DMASCR_DMA_COMPLETE|DMASCR_CHAIN_COMPLETE) >> 16, card->csr_remap+ DMA_STATUS_CTRL + 2); - + /* log errors and clear interrupt status */ if (dma_status & DMASCR_ANY_ERR) { unsigned int data_log1, data_log2; @@ -668,7 +668,7 @@ HW_TRACE(0x30); HW_TRACE(0x36); - return IRQ_HANDLED; + return IRQ_HANDLED; } /* ----------------------------------------------------------------------------------- @@ -761,7 +761,7 @@ static void check_all_batteries(unsigned long ptr) { int i; - for (i = 0; i < num_cards; i++) + for (i = 0; i < num_cards; i++) if (!(cards[i].flags & UM_FLAG_NO_BATT)) { struct cardinfo *card = &cards[i]; spin_lock_bh(&card->lock); @@ -972,7 +972,7 @@ static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_i tasklet_init(&card->tasklet, process_page, (unsigned long)card); card->check_batteries = 0; - + mem_present = readb(card->csr_remap + MEMCTRLSTATUS_MEMORY); switch (mem_present) { case MEM_128_MB: @@ -1005,7 +1005,7 @@ static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_i card->battery[1].good = !(batt_status & BATTERY_2_FAILURE); card->battery[0].last_change = card->battery[1].last_change = jiffies; - if (card->flags & UM_FLAG_NO_BATT) + if (card->flags & UM_FLAG_NO_BATT) dev_printk(KERN_INFO, &card->dev->dev, "Size %d KB\n", card->mm_size); else { diff --git a/drivers/block/umem.h b/drivers/block/umem.h index 3a3819afed9..375c68974c9 100644 --- a/drivers/block/umem.h +++ b/drivers/block/umem.h @@ -87,13 +87,13 @@ #define DMASCR_DMA_COMPLETE 0x40000 #define DMASCR_CHAIN_COMPLETE 0x80000 -/* -3.SOME PCs HAVE HOST BRIDGES WHICH APPARENTLY DO NOT CORRECTLY HANDLE -READ-LINE (0xE) OR READ-MULTIPLE (0xC) PCI COMMAND CODES DURING DMA -TRANSFERS. IN OTHER SYSTEMS THESE COMMAND CODES WILL CAUSE THE HOST BRIDGE -TO ALLOW LONGER BURSTS DURING DMA READ OPERATIONS. THE UPPER FOUR BITS -(31..28) OF THE DMA CSR HAVE BEEN MADE PROGRAMMABLE, SO THAT EITHER A 0x6, -AN 0xE OR A 0xC CAN BE WRITTEN TO THEM TO SET THE COMMAND CODE USED DURING +/* +3.SOME PCs HAVE HOST BRIDGES WHICH APPARENTLY DO NOT CORRECTLY HANDLE +READ-LINE (0xE) OR READ-MULTIPLE (0xC) PCI COMMAND CODES DURING DMA +TRANSFERS. IN OTHER SYSTEMS THESE COMMAND CODES WILL CAUSE THE HOST BRIDGE +TO ALLOW LONGER BURSTS DURING DMA READ OPERATIONS. THE UPPER FOUR BITS +(31..28) OF THE DMA CSR HAVE BEEN MADE PROGRAMMABLE, SO THAT EITHER A 0x6, +AN 0xE OR A 0xC CAN BE WRITTEN TO THEM TO SET THE COMMAND CODE USED DURING DMA READ OPERATIONS. */ #define DMASCR_READ 0x60000000 -- cgit v1.2.3 From cb3503ca54dc34e8dc3b823a6bd52c0807c102f4 Mon Sep 17 00:00:00 2001 From: Jeff Garzik Date: Thu, 27 Sep 2007 07:49:39 -0400 Subject: drivers/block/umem: use DRIVER_NAME where appropriate Signed-off-by: Jeff Garzik --- drivers/block/umem.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/block/umem.c b/drivers/block/umem.c index 25104176369..99806f9ee4c 100644 --- a/drivers/block/umem.c +++ b/drivers/block/umem.c @@ -1029,7 +1029,7 @@ static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_i data = ~data; data += 1; - if (request_irq(dev->irq, mm_interrupt, IRQF_SHARED, "pci-umem", card)) { + if (request_irq(dev->irq, mm_interrupt, IRQF_SHARED, DRIVER_NAME, card)) { dev_printk(KERN_ERR, &card->dev->dev, "Unable to allocate IRQ\n"); ret = -ENODEV; @@ -1155,7 +1155,7 @@ static int __init mm_init(void) if (retval) return -ENOMEM; - err = major_nr = register_blkdev(0, "umem"); + err = major_nr = register_blkdev(0, DRIVER_NAME); if (err < 0) { pci_unregister_driver(&mm_pci_driver); return -EIO; @@ -1187,7 +1187,7 @@ static int __init mm_init(void) out: pci_unregister_driver(&mm_pci_driver); - unregister_blkdev(major_nr, "umem"); + unregister_blkdev(major_nr, DRIVER_NAME); while (i--) put_disk(mm_gendisk[i]); return -ENOMEM; @@ -1210,7 +1210,7 @@ static void __exit mm_cleanup(void) pci_unregister_driver(&mm_pci_driver); - unregister_blkdev(major_nr, "umem"); + unregister_blkdev(major_nr, DRIVER_NAME); } module_init(mm_init); -- cgit v1.2.3 From 34e1b83413d91999416443f31c276095f9937aa6 Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Thu, 4 Oct 2007 08:52:38 +0200 Subject: Sysace: Minor coding convention fixup Put function call and return code test on separate lines. Signed-off-by: Grant Likely Signed-off-by: Jens Axboe --- drivers/block/xsysace.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/block/xsysace.c b/drivers/block/xsysace.c index 3ea172b7b7a..3847464f5ea 100644 --- a/drivers/block/xsysace.c +++ b/drivers/block/xsysace.c @@ -1091,7 +1091,8 @@ ace_alloc(struct device *dev, int id, unsigned long physaddr, ace->bus_width = bus_width; /* Call the setup code */ - if ((rc = ace_setup(ace)) != 0) + rc = ace_setup(ace); + if (rc) goto err_setup; dev_set_drvdata(dev, ace); @@ -1253,11 +1254,13 @@ static int __init ace_init(void) goto err_blk; } - if ((rc = ace_of_register()) != 0) + rc = ace_of_register(); + if (rc) goto err_of; pr_debug("xsysace: registering platform binding\n"); - if ((rc = platform_driver_register(&ace_platform_driver)) != 0) + rc = platform_driver_register(&ace_platform_driver); + if (rc) goto err_plat; pr_info("Xilinx SystemACE device driver, major=%i\n", ace_major); -- cgit v1.2.3 From b5515d86f2efd4dd3516c16c17c1a611a5800b19 Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Thu, 4 Oct 2007 08:52:39 +0200 Subject: Sysace: sparse fixes Signed-off-by: Grant Likely Signed-off-by: Jens Axboe --- drivers/block/xsysace.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'drivers') diff --git a/drivers/block/xsysace.c b/drivers/block/xsysace.c index 3847464f5ea..5b73471ada7 100644 --- a/drivers/block/xsysace.c +++ b/drivers/block/xsysace.c @@ -195,7 +195,7 @@ struct ace_device { /* Details of hardware device */ unsigned long physaddr; - void *baseaddr; + void __iomem *baseaddr; int irq; int bus_width; /* 0 := 8 bit; 1 := 16 bit */ struct ace_reg_ops *reg_ops; @@ -227,20 +227,20 @@ struct ace_reg_ops { /* 8 Bit bus width */ static u16 ace_in_8(struct ace_device *ace, int reg) { - void *r = ace->baseaddr + reg; + void __iomem *r = ace->baseaddr + reg; return in_8(r) | (in_8(r + 1) << 8); } static void ace_out_8(struct ace_device *ace, int reg, u16 val) { - void *r = ace->baseaddr + reg; + void __iomem *r = ace->baseaddr + reg; out_8(r, val); out_8(r + 1, val >> 8); } static void ace_datain_8(struct ace_device *ace) { - void *r = ace->baseaddr + 0x40; + void __iomem *r = ace->baseaddr + 0x40; u8 *dst = ace->data_ptr; int i = ACE_FIFO_SIZE; while (i--) @@ -250,7 +250,7 @@ static void ace_datain_8(struct ace_device *ace) static void ace_dataout_8(struct ace_device *ace) { - void *r = ace->baseaddr + 0x40; + void __iomem *r = ace->baseaddr + 0x40; u8 *src = ace->data_ptr; int i = ACE_FIFO_SIZE; while (i--) -- cgit v1.2.3 From d2bbf3da3759d04cd5836955cc59c8ae96092831 Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Thu, 4 Oct 2007 08:52:40 +0200 Subject: Sysace: Don't enable IRQ until after interrupt handler is registered The previous patch to move the interrupt handler registration moved it below enabling interrupts which could be a problem if the device is on a shared interrupt line. This patch fixes the order. Signed-off-by: Grant Likely Signed-off-by: Jens Axboe --- drivers/block/xsysace.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'drivers') diff --git a/drivers/block/xsysace.c b/drivers/block/xsysace.c index 5b73471ada7..9e7652dcde6 100644 --- a/drivers/block/xsysace.c +++ b/drivers/block/xsysace.c @@ -1005,11 +1005,6 @@ static int __devinit ace_setup(struct ace_device *ace) ace_out(ace, ACE_CTRL, ACE_CTRL_FORCECFGMODE | ACE_CTRL_DATABUFRDYIRQ | ACE_CTRL_ERRORIRQ); - /* Enable interrupts */ - val = ace_in(ace, ACE_CTRL); - val |= ACE_CTRL_DATABUFRDYIRQ | ACE_CTRL_ERRORIRQ; - ace_out(ace, ACE_CTRL, val); - /* Now we can hook up the irq handler */ if (ace->irq != NO_IRQ) { rc = request_irq(ace->irq, ace_interrupt, 0, "systemace", ace); @@ -1020,6 +1015,11 @@ static int __devinit ace_setup(struct ace_device *ace) } } + /* Enable interrupts */ + val = ace_in(ace, ACE_CTRL); + val |= ACE_CTRL_DATABUFRDYIRQ | ACE_CTRL_ERRORIRQ; + ace_out(ace, ACE_CTRL, val); + /* Print the identification */ dev_info(ace->dev, "Xilinx SystemACE revision %i.%i.%i\n", (version >> 12) & 0xf, (version >> 8) & 0x0f, version & 0xff); -- cgit v1.2.3