diff options
Diffstat (limited to 'drivers')
41 files changed, 776 insertions, 656 deletions
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 085b7794fb3..80483aac4cc 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) { @@ -3815,14 +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/lguest_blk.c b/drivers/block/lguest_blk.c index 160cf14431a..fa8e42341b8 100644 --- a/drivers/block/lguest_blk.c +++ b/drivers/block/lguest_blk.c @@ -142,25 +142,23 @@ 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; - - rq_for_each_bio(bio, req) { - struct bio_vec *bvec; - bio_for_each_segment(bvec, bio, idx) { - /* 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++; - } + unsigned int i = 0, len = 0; + struct req_iterator iter; + 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++; } /* 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/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/nbd.c b/drivers/block/nbd.c index be92c658f06..be5ec3a9b1f 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; @@ -205,27 +205,23 @@ 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) { - flags = 0; - if ((i < (bio->bi_vcnt - 1)) || bio->bi_next) - 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; - } + 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; } } } @@ -321,22 +317,19 @@ 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) { - 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); + 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", + 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/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/ps3disk.c b/drivers/block/ps3disk.c index aa8b890c80d..06d0552cf49 100644 --- a/drivers/block/ps3disk.c +++ b/drivers/block/ps3disk.c @@ -91,30 +91,29 @@ 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) { - size = bvec->bv_len; - buf = __bio_kmap_atomic(bio, j, KM_IRQ0); - 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); - } + __func__, __LINE__, i, bio_segments(iter.bio), + 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); i++; } } @@ -130,12 +129,13 @@ 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/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 6b7c02d6360..99806f9ee4c 100644 --- a/drivers/block/umem.c +++ b/drivers/block/umem.c @@ -52,7 +52,7 @@ #include <linux/fcntl.h> /* O_ACCMODE */ #include <linux/hdreg.h> /* HDIO_GETGEO */ -#include <linux/umem.h> +#include "umem.h" #include <asm/uaccess.h> #include <asm/io.h> @@ -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) */ @@ -97,15 +98,9 @@ static int major_nr; #include <linux/blkpg.h> struct cardinfo { - int card_number; 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, @@ -113,6 +108,8 @@ struct cardinfo { * have been written */ struct bio *bio, *currentbio, **biotail; + int current_idx; + sector_t current_sector; struct request_queue *queue; @@ -121,6 +118,7 @@ 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)) @@ -233,7 +231,7 @@ 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) @@ -295,7 +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); @@ -329,7 +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 @@ -368,7 +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. @@ -380,12 +378,16 @@ 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 +396,17 @@ 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 +414,8 @@ 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 +425,7 @@ 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 +441,10 @@ 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; @@ -461,7 +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]; @@ -471,32 +477,34 @@ static void process_page(unsigned long data) if (!(control & DMASCR_DMA_COMPLETE)) { control = dma_status; - last=1; + 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, + 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); 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); } } @@ -532,7 +540,7 @@ 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); } } @@ -547,7 +555,6 @@ 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; @@ -585,7 +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; @@ -606,46 +613,51 @@ 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); } @@ -656,7 +668,7 @@ HW_TRACE(0x30); HW_TRACE(0x36); - return IRQ_HANDLED; + return IRQ_HANDLED; } /* ----------------------------------------------------------------------------------- @@ -696,20 +708,20 @@ 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; @@ -733,8 +745,8 @@ 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"); @@ -749,7 +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); @@ -853,45 +865,56 @@ 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 (pci_enable_device(dev) < 0) - return -ENODEV; + if (!printed_version++) + printk(KERN_INFO DRIVER_VERSION " : " DRIVER_DESC "\n"); + + 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->card_number = num_cards; - 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; - 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); - ret = -ENOMEM; + ret = pci_request_regions(dev, DRIVER_NAME); + if (ret) { + dev_printk(KERN_ERR, &card->dev->dev, + "Unable to request memory region\n"); 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) { - 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, - card->csr_base, card->csr_remap, card->csr_len); + dev_printk(KERN_INFO, &card->dev->dev, + "CSR 0x%08lx -> 0x%p (0x%lx)\n", + csr_base, card->csr_remap, csr_len); switch(card->dev->device) { case 0x5415: @@ -915,7 +938,7 @@ 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; } @@ -928,7 +951,7 @@ 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]); @@ -949,7 +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: @@ -982,12 +1005,13 @@ 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) - printk(KERN_INFO "MM%d: Size %d KB\n", - card->card_number, card->mm_size); + if (card->flags & UM_FLAG_NO_BATT) + 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"), @@ -1005,19 +1029,16 @@ 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)) { - printk(KERN_ERR "MM%d: Unable to allocate IRQ\n", card->card_number); + 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; goto failed_req_irq; } - card->irq = dev->irq; - printk(KERN_INFO "MM%d: Window size %d bytes, IRQ %d\n", card->card_number, - card->win_size, card->irq); + dev_printk(KERN_INFO, &card->dev->dev, + "Window size %d bytes, IRQ %d\n", data, dev->irq); spin_lock_init(&card->lock); @@ -1037,10 +1058,12 @@ 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; } @@ -1062,7 +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; @@ -1077,9 +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, @@ -1090,6 +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[] = { @@ -1109,11 +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 @@ -1125,13 +1151,11 @@ 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; - 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; @@ -1157,13 +1181,13 @@ 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; 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; @@ -1186,7 +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); diff --git a/drivers/block/umem.h b/drivers/block/umem.h new file mode 100644 index 00000000000..375c68974c9 --- /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 diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c index 964e51634f2..2bdebcb3ff1 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; @@ -186,34 +185,31 @@ 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) { - 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( + 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( 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/block/xsysace.c b/drivers/block/xsysace.c index 3ede0b63da1..9e7652dcde6 100644 --- a/drivers/block/xsysace.c +++ b/drivers/block/xsysace.c @@ -91,6 +91,10 @@ #include <linux/blkdev.h> #include <linux/hdreg.h> #include <linux/platform_device.h> +#if defined(CONFIG_OF) +#include <linux/of_device.h> +#include <linux/of_platform.h> +#endif MODULE_AUTHOR("Grant Likely <grant.likely@secretlab.ca>"); MODULE_DESCRIPTION("Xilinx SystemACE device driver"); @@ -158,6 +162,9 @@ 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 { @@ -188,7 +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; @@ -220,20 +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--) @@ -243,7 +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--) @@ -931,9 +938,11 @@ 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); @@ -944,15 +953,6 @@ 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 */ @@ -982,7 +982,7 @@ 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); @@ -1005,6 +1005,16 @@ static int __devinit ace_setup(struct ace_device *ace) ace_out(ace, ACE_CTRL, ACE_CTRL_FORCECFGMODE | ACE_CTRL_DATABUFRDYIRQ | ACE_CTRL_ERRORIRQ); + /* 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; + } + } + /* Enable interrupts */ val = ace_in(ace, ACE_CTRL); val |= ACE_CTRL_DATABUFRDYIRQ | ACE_CTRL_ERRORIRQ; @@ -1024,16 +1034,14 @@ 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); - if (ace->irq != NO_IRQ) - free_irq(ace->irq, ace); - err_ioremap: - printk(KERN_INFO "xsysace: error initializing device at 0x%lx\n", +err_ioremap: + dev_info(ace->dev, "xsysace: error initializing device at 0x%lx\n", ace->physaddr); return -ENOMEM; } @@ -1056,98 +1064,222 @@ static void __devexit ace_teardown(struct ace_device *ace) iounmap(ace->baseaddr); } -/* --------------------------------------------------------------------- - * Platform Bus Support - */ - -static int __devinit ace_probe(struct device *device) +static int __devinit +ace_alloc(struct device *dev, int id, unsigned long physaddr, + int irq, int bus_width) { - struct platform_device *dev = to_platform_device(device); struct ace_device *ace; - int i; + int rc; + dev_dbg(dev, "ace_alloc(%p)\n", dev); - dev_dbg(device, "ace_probe(%p)\n", device); + 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 = device; - 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; - - dev_set_drvdata(&dev->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 */ + rc = ace_setup(ace); + if (rc) goto err_setup; + dev_set_drvdata(dev, ace); return 0; - err_setup: - dev_set_drvdata(&dev->dev, NULL); +err_setup: + dev_set_drvdata(dev, NULL); kfree(ace); - err_alloc: - printk(KERN_ERR "xsysace: could not initialize device\n"); - return -ENOMEM; +err_alloc: +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 device *device) +static void __devexit ace_free(struct device *dev) { - struct ace_device *ace = dev_get_drvdata(device); - - dev_dbg(device, "ace_remove(%p)\n", device); + struct ace_device *ace = dev_get_drvdata(dev); + dev_dbg(dev, "ace_free(%p)\n", dev); if (ace) { ace_teardown(ace); + 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 = ACE_BUS_WIDTH_16; /* 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; } -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", + }, +}; + +/* --------------------------------------------------------------------- + * 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 */ 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); + rc = ace_of_register(); + if (rc) + goto err_of; + + pr_debug("xsysace: registering platform binding\n"); + rc = platform_driver_register(&ace_platform_driver); + if (rc) + goto err_plat; + + pr_info("Xilinx SystemACE device driver, major=%i\n", ace_major); + 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); + 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); + ace_of_unregister(); unregister_blkdev(ace_major, "xsysace"); } diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c index ae8e1a64b8a..04a357808f2 100644 --- a/drivers/ide/ide-floppy.c +++ b/drivers/ide/ide-floppy.c @@ -606,26 +606,24 @@ 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) { - if (!bcount) - break; + rq_for_each_segment(bvec, rq, iter) { + 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); @@ -639,27 +637,25 @@ 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) { - if (!bcount) - break; + rq_for_each_segment(bvec, rq, iter) { + 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/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 265c467854d..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. * @@ -109,15 +106,7 @@ 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); 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 <linux/raid/md.h> -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; i<conf->copies; 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 ; i<disks; i++) if (bi == &sh->dev[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 ; i<disks; i++) if (bi == &sh->dev[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/dasd_diag.c b/drivers/s390/block/dasd_diag.c index d32c60dbdd8..571320ab9e1 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) { - if (bv->bv_len & (blksize - 1)) - /* Fba can only do full blocks. */ - return ERR_PTR(-EINVAL); - count += bv->bv_len >> (device->s2b_shift + 9); - } + 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) @@ -516,18 +513,16 @@ 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) { - 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++; - } + 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++; } } cqr->retries = DIAG_MAX_RETRIES; diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c index ea63ba7828f..44adf8496bd 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) @@ -1206,18 +1205,15 @@ 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) { - if (bv->bv_len & (blksize - 1)) - /* Eckd can only do full blocks. */ - return ERR_PTR(-EINVAL); - count += bv->bv_len >> (device->s2b_shift + 9); + 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 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. */ if (count != last_rec - first_rec + 1) @@ -1257,7 +1253,7 @@ 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 +1324,12 @@ 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 +1342,7 @@ 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..1d95822e0b8 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) { @@ -257,18 +256,15 @@ 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) { - if (bv->bv_len & (blksize - 1)) - /* Fba can only do full blocks. */ - return ERR_PTR(-EINVAL); - count += bv->bv_len >> (device->s2b_shift + 9); + 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 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. */ if (count != last_rec - first_rec + 1) @@ -304,7 +300,7 @@ 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 +355,11 @@ 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 +370,7 @@ 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/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/s390/char/tape_34xx.c b/drivers/s390/char/tape_34xx.c index 80e7a537e7d..5b47e9cce75 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); @@ -1175,18 +1172,15 @@ 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) { - 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; - } + 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; } } diff --git a/drivers/s390/char/tape_3590.c b/drivers/s390/char/tape_3590.c index 7e2b2ab4926..9f244c591ee 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; @@ -653,21 +651,18 @@ 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) { - 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(); + 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(); } ccw = tape_ccw_end(ccw, NOP, 0, NULL); DBF_EVENT(6, "xBREDccwg\n"); diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index a417a6ff9f9..604f4d71793 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -263,25 +263,12 @@ 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) +static void scsi_bi_endio(struct bio *bio, int error) { - if (bio->bi_size) - return 1; - bio_put(bio); - return 0; } /** @@ -337,7 +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; @@ -359,7 +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; |