diff options
Diffstat (limited to 'drivers/message/i2o/i2o_block.c')
-rw-r--r-- | drivers/message/i2o/i2o_block.c | 454 |
1 files changed, 229 insertions, 225 deletions
diff --git a/drivers/message/i2o/i2o_block.c b/drivers/message/i2o/i2o_block.c index 7b74c87..f283b5b 100644 --- a/drivers/message/i2o/i2o_block.c +++ b/drivers/message/i2o/i2o_block.c @@ -62,7 +62,7 @@ #include "i2o_block.h" #define OSM_NAME "block-osm" -#define OSM_VERSION "$Rev$" +#define OSM_VERSION "1.287" #define OSM_DESCRIPTION "I2O Block Device OSM" static struct i2o_driver i2o_block_driver; @@ -104,7 +104,8 @@ static int i2o_block_remove(struct device *dev) struct i2o_device *i2o_dev = to_i2o_device(dev); struct i2o_block_device *i2o_blk_dev = dev_get_drvdata(dev); - osm_info("Device removed %s\n", i2o_blk_dev->gd->disk_name); + osm_info("device removed (TID: %03x): %s\n", i2o_dev->lct_data.tid, + i2o_blk_dev->gd->disk_name); i2o_event_register(i2o_dev, &i2o_block_driver, 0, 0); @@ -146,6 +147,29 @@ static int i2o_block_device_flush(struct i2o_device *dev) }; /** + * i2o_block_issue_flush - device-flush interface for block-layer + * @queue: the request queue of the device which should be flushed + * @disk: gendisk + * @error_sector: error offset + * + * Helper function to provide flush functionality to block-layer. + * + * Returns 0 on success or negative error code on failure. + */ + +static int i2o_block_issue_flush(request_queue_t * queue, struct gendisk *disk, + sector_t * error_sector) +{ + struct i2o_block_device *i2o_blk_dev = queue->queuedata; + int rc = -ENODEV; + + if (likely(i2o_blk_dev)) + rc = i2o_block_device_flush(i2o_blk_dev->i2o_dev); + + return rc; +} + +/** * i2o_block_device_mount - Mount (load) the media of device dev * @dev: I2O device which should receive the mount request * @media_id: Media Identifier @@ -298,28 +322,31 @@ static inline void i2o_block_request_free(struct i2o_block_request *ireq) /** * i2o_block_sglist_alloc - Allocate the SG list and map it + * @c: I2O controller to which the request belongs * @ireq: I2O block request * - * Builds the SG list and map it into to be accessable by the controller. + * Builds the SG list and map it to be accessable by the controller. * - * Returns the number of elements in the SG list or 0 on failure. + * Returns 0 on failure or 1 on success. */ -static inline int i2o_block_sglist_alloc(struct i2o_block_request *ireq) +static inline int i2o_block_sglist_alloc(struct i2o_controller *c, + struct i2o_block_request *ireq, + u32 __iomem ** mptr) { - struct device *dev = &ireq->i2o_blk_dev->i2o_dev->iop->pdev->dev; int nents; + enum dma_data_direction direction; + ireq->dev = &c->pdev->dev; nents = blk_rq_map_sg(ireq->req->q, ireq->req, ireq->sg_table); if (rq_data_dir(ireq->req) == READ) - ireq->sg_dma_direction = PCI_DMA_FROMDEVICE; + direction = PCI_DMA_FROMDEVICE; else - ireq->sg_dma_direction = PCI_DMA_TODEVICE; + direction = PCI_DMA_TODEVICE; - ireq->sg_nents = dma_map_sg(dev, ireq->sg_table, nents, - ireq->sg_dma_direction); + ireq->sg_nents = nents; - return ireq->sg_nents; + return i2o_dma_map_sg(c, ireq->sg_table, nents, direction, mptr); }; /** @@ -330,10 +357,14 @@ static inline int i2o_block_sglist_alloc(struct i2o_block_request *ireq) */ static inline void i2o_block_sglist_free(struct i2o_block_request *ireq) { - struct device *dev = &ireq->i2o_blk_dev->i2o_dev->iop->pdev->dev; + enum dma_data_direction direction; - dma_unmap_sg(dev, ireq->sg_table, ireq->sg_nents, - ireq->sg_dma_direction); + if (rq_data_dir(ireq->req) == READ) + direction = PCI_DMA_FROMDEVICE; + else + direction = PCI_DMA_TODEVICE; + + dma_unmap_sg(ireq->dev, ireq->sg_table, ireq->sg_nents, direction); }; /** @@ -351,6 +382,11 @@ static int i2o_block_prep_req_fn(struct request_queue *q, struct request *req) struct i2o_block_device *i2o_blk_dev = q->queuedata; struct i2o_block_request *ireq; + if (unlikely(!i2o_blk_dev)) { + osm_err("block device already removed\n"); + return BLKPREP_KILL; + } + /* request is already processed by us, so return */ if (req->flags & REQ_SPECIAL) { osm_debug("REQ_SPECIAL already set!\n"); @@ -400,71 +436,65 @@ static void i2o_block_delayed_request_fn(void *delayed_request) }; /** - * i2o_block_reply - Block OSM reply handler. - * @c: I2O controller from which the message arrives - * @m: message id of reply - * qmsg: the actuall I2O message reply + * i2o_block_end_request - Post-processing of completed commands + * @req: request which should be completed + * @uptodate: 1 for success, 0 for I/O error, < 0 for specific error + * @nr_bytes: number of bytes to complete * - * This function gets all the message replies. + * Mark the request as complete. The lock must not be held when entering. * */ -static int i2o_block_reply(struct i2o_controller *c, u32 m, - struct i2o_message *msg) +static void i2o_block_end_request(struct request *req, int uptodate, + int nr_bytes) { - struct i2o_block_request *ireq; - struct request *req; - struct i2o_block_device *dev; - struct request_queue *q; - u8 st; + struct i2o_block_request *ireq = req->special; + struct i2o_block_device *dev = ireq->i2o_blk_dev; + request_queue_t *q = req->q; unsigned long flags; - /* FAILed message */ - if (unlikely(le32_to_cpu(msg->u.head[0]) & (1 << 13))) { - struct i2o_message *pmsg; - u32 pm; + if (end_that_request_chunk(req, uptodate, nr_bytes)) { + int leftover = (req->hard_nr_sectors << KERNEL_SECTOR_SHIFT); - /* - * FAILed message from controller - * We increment the error count and abort it - * - * In theory this will never happen. The I2O block class - * specification states that block devices never return - * FAILs but instead use the REQ status field...but - * better be on the safe side since no one really follows - * the spec to the book :) - */ - pm = le32_to_cpu(msg->body[3]); - pmsg = i2o_msg_in_to_virt(c, pm); + if (blk_pc_request(req)) + leftover = req->data_len; - req = i2o_cntxt_list_get(c, le32_to_cpu(pmsg->u.s.tcntxt)); - if (unlikely(!req)) { - osm_err("NULL reply received!\n"); - return -1; - } + if (end_io_error(uptodate)) + end_that_request_chunk(req, 0, leftover); + } - ireq = req->special; - dev = ireq->i2o_blk_dev; - q = dev->gd->queue; + add_disk_randomness(req->rq_disk); - req->errors++; - - spin_lock_irqsave(q->queue_lock, flags); + spin_lock_irqsave(q->queue_lock, flags); - while (end_that_request_chunk(req, !req->errors, - le32_to_cpu(pmsg->body[1]))) ; - end_that_request_last(req); + end_that_request_last(req); + if (likely(dev)) { dev->open_queue_depth--; list_del(&ireq->queue); - blk_start_queue(q); + } - spin_unlock_irqrestore(q->queue_lock, flags); + blk_start_queue(q); - /* Now flush the message by making it a NOP */ - i2o_msg_nop(c, pm); + spin_unlock_irqrestore(q->queue_lock, flags); - return -1; - } + i2o_block_sglist_free(ireq); + i2o_block_request_free(ireq); +}; + +/** + * i2o_block_reply - Block OSM reply handler. + * @c: I2O controller from which the message arrives + * @m: message id of reply + * qmsg: the actuall I2O message reply + * + * This function gets all the message replies. + * + */ +static int i2o_block_reply(struct i2o_controller *c, u32 m, + struct i2o_message *msg) +{ + struct request *req; + int uptodate = 1; req = i2o_cntxt_list_get(c, le32_to_cpu(msg->u.s.tcntxt)); if (unlikely(!req)) { @@ -472,61 +502,13 @@ static int i2o_block_reply(struct i2o_controller *c, u32 m, return -1; } - ireq = req->special; - dev = ireq->i2o_blk_dev; - q = dev->gd->queue; - - if (unlikely(!dev->i2o_dev)) { - /* - * This is HACK, but Intel Integrated RAID allows user - * to delete a volume that is claimed, locked, and in use - * by the OS. We have to check for a reply from a - * non-existent device and flag it as an error or the system - * goes kaput... - */ - req->errors++; - osm_warn("Data transfer to deleted device!\n"); - spin_lock_irqsave(q->queue_lock, flags); - while (end_that_request_chunk - (req, !req->errors, le32_to_cpu(msg->body[1]))) ; - end_that_request_last(req); - - dev->open_queue_depth--; - list_del(&ireq->queue); - blk_start_queue(q); - - spin_unlock_irqrestore(q->queue_lock, flags); - return -1; - } - /* * Lets see what is cooking. We stuffed the * request in the context. */ - st = le32_to_cpu(msg->body[0]) >> 24; - - if (st != 0) { - int err; - char *bsa_errors[] = { - "Success", - "Media Error", - "Failure communicating to device", - "Device Failure", - "Device is not ready", - "Media not present", - "Media is locked by another user", - "Media has failed", - "Failure communicating to device", - "Device bus failure", - "Device is locked by another user", - "Device is write protected", - "Device has reset", - "Volume has changed, waiting for acknowledgement" - }; - - err = le32_to_cpu(msg->body[0]) & 0xffff; - + if ((le32_to_cpu(msg->body[0]) >> 24) != 0) { + u32 status = le32_to_cpu(msg->body[0]); /* * Device not ready means two things. One is that the * the thing went offline (but not a removal media) @@ -539,40 +521,24 @@ static int i2o_block_reply(struct i2o_controller *c, u32 m, * Don't stick a supertrak100 into cache aggressive modes */ - osm_err("block-osm: /dev/%s error: %s", dev->gd->disk_name, - bsa_errors[le32_to_cpu(msg->body[0]) & 0xffff]); - if (le32_to_cpu(msg->body[0]) & 0x00ff0000) - printk(KERN_ERR " - DDM attempted %d retries", - (le32_to_cpu(msg->body[0]) >> 16) & 0x00ff); - printk(KERN_ERR ".\n"); - req->errors++; - } else - req->errors = 0; + osm_err("TID %03x error status: 0x%02x, detailed status: " + "0x%04x\n", (le32_to_cpu(msg->u.head[1]) >> 12 & 0xfff), + status >> 24, status & 0xffff); - if (!end_that_request_chunk - (req, !req->errors, le32_to_cpu(msg->body[1]))) { - add_disk_randomness(req->rq_disk); - spin_lock_irqsave(q->queue_lock, flags); - - end_that_request_last(req); + req->errors++; - dev->open_queue_depth--; - list_del(&ireq->queue); - blk_start_queue(q); + uptodate = 0; + } - spin_unlock_irqrestore(q->queue_lock, flags); - - i2o_block_sglist_free(ireq); - i2o_block_request_free(ireq); - } else - osm_err("still remaining chunks\n"); + i2o_block_end_request(req, uptodate, le32_to_cpu(msg->body[1])); return 1; }; static void i2o_block_event(struct i2o_event *evt) { - osm_info("block-osm: event received\n"); + osm_debug("event received\n"); + kfree(evt); }; /* @@ -777,18 +743,25 @@ static int i2o_block_media_changed(struct gendisk *disk) static int i2o_block_transfer(struct request *req) { struct i2o_block_device *dev = req->rq_disk->private_data; - struct i2o_controller *c = dev->i2o_dev->iop; + struct i2o_controller *c; int tid = dev->i2o_dev->lct_data.tid; struct i2o_message __iomem *msg; - void __iomem *mptr; + u32 __iomem *mptr; struct i2o_block_request *ireq = req->special; - struct scatterlist *sg; - int sgnum; - int i; u32 m; u32 tcntxt; - u32 sg_flags; + u32 sgl_offset = SGL_OFFSET_8; + u32 ctl_flags = 0x00000000; int rc; + u32 cmd; + + if (unlikely(!dev->i2o_dev)) { + osm_err("transfer to removed drive\n"); + rc = -ENODEV; + goto exit; + } + + c = dev->i2o_dev->iop; m = i2o_msg_get(c, &msg); if (m == I2O_QUEUE_EMPTY) { @@ -802,82 +775,109 @@ static int i2o_block_transfer(struct request *req) goto nop_msg; } - if ((sgnum = i2o_block_sglist_alloc(ireq)) <= 0) { - rc = -ENOMEM; - goto context_remove; - } - - /* Build the message based on the request. */ writel(i2o_block_driver.context, &msg->u.s.icntxt); writel(tcntxt, &msg->u.s.tcntxt); - writel(req->nr_sectors << 9, &msg->body[1]); - - writel((((u64) req->sector) << 9) & 0xffffffff, &msg->body[2]); - writel(req->sector >> 23, &msg->body[3]); - mptr = &msg->body[4]; - - sg = ireq->sg_table; + mptr = &msg->body[0]; if (rq_data_dir(req) == READ) { - writel(I2O_CMD_BLOCK_READ << 24 | HOST_TID << 12 | tid, - &msg->u.head[1]); - sg_flags = 0x10000000; + cmd = I2O_CMD_BLOCK_READ << 24; + switch (dev->rcache) { - case CACHE_NULL: - writel(0, &msg->body[0]); - break; case CACHE_PREFETCH: - writel(0x201F0008, &msg->body[0]); + ctl_flags = 0x201F0008; break; + case CACHE_SMARTFETCH: if (req->nr_sectors > 16) - writel(0x201F0008, &msg->body[0]); + ctl_flags = 0x201F0008; else - writel(0x001F0000, &msg->body[0]); + ctl_flags = 0x001F0000; + break; + + default: break; } } else { - writel(I2O_CMD_BLOCK_WRITE << 24 | HOST_TID << 12 | tid, - &msg->u.head[1]); - sg_flags = 0x14000000; + cmd = I2O_CMD_BLOCK_WRITE << 24; + switch (dev->wcache) { - case CACHE_NULL: - writel(0, &msg->body[0]); - break; case CACHE_WRITETHROUGH: - writel(0x001F0008, &msg->body[0]); + ctl_flags = 0x001F0008; break; case CACHE_WRITEBACK: - writel(0x001F0010, &msg->body[0]); + ctl_flags = 0x001F0010; break; case CACHE_SMARTBACK: if (req->nr_sectors > 16) - writel(0x001F0004, &msg->body[0]); + ctl_flags = 0x001F0004; else - writel(0x001F0010, &msg->body[0]); + ctl_flags = 0x001F0010; break; case CACHE_SMARTTHROUGH: if (req->nr_sectors > 16) - writel(0x001F0004, &msg->body[0]); + ctl_flags = 0x001F0004; else - writel(0x001F0010, &msg->body[0]); + ctl_flags = 0x001F0010; + default: + break; + } + } + +#ifdef CONFIG_I2O_EXT_ADAPTEC + if (c->adaptec) { + u8 cmd[10]; + u32 scsi_flags; + u16 hwsec = queue_hardsect_size(req->q) >> KERNEL_SECTOR_SHIFT; + + memset(cmd, 0, 10); + + sgl_offset = SGL_OFFSET_12; + + writel(I2O_CMD_PRIVATE << 24 | HOST_TID << 12 | tid, + &msg->u.head[1]); + + writel(I2O_VENDOR_DPT << 16 | I2O_CMD_SCSI_EXEC, mptr++); + writel(tid, mptr++); + + /* + * ENABLE_DISCONNECT + * SIMPLE_TAG + * RETURN_SENSE_DATA_IN_REPLY_MESSAGE_FRAME + */ + if (rq_data_dir(req) == READ) { + cmd[0] = 0x28; + scsi_flags = 0x60a0000a; + } else { + cmd[0] = 0x2A; + scsi_flags = 0xa0a0000a; } + + writel(scsi_flags, mptr++); + + *((u32 *) & cmd[2]) = cpu_to_be32(req->sector * hwsec); + *((u16 *) & cmd[7]) = cpu_to_be16(req->nr_sectors * hwsec); + + memcpy_toio(mptr, cmd, 10); + mptr += 4; + writel(req->nr_sectors << KERNEL_SECTOR_SHIFT, mptr++); + } else +#endif + { + writel(cmd | HOST_TID << 12 | tid, &msg->u.head[1]); + writel(ctl_flags, mptr++); + writel(req->nr_sectors << KERNEL_SECTOR_SHIFT, mptr++); + writel((u32) (req->sector << KERNEL_SECTOR_SHIFT), mptr++); + writel(req->sector >> (32 - KERNEL_SECTOR_SHIFT), mptr++); } - for (i = sgnum; i > 0; i--) { - if (i == 1) - sg_flags |= 0x80000000; - writel(sg_flags | sg_dma_len(sg), mptr); - writel(sg_dma_address(sg), mptr + 4); - mptr += 8; - sg++; + if (!i2o_block_sglist_alloc(c, ireq, &mptr)) { + rc = -ENOMEM; + goto context_remove; } - writel(I2O_MESSAGE_SIZE - (((unsigned long)mptr - - (unsigned long)&msg->u.head[0]) >> 2) | SGL_OFFSET_8, - &msg->u.head[0]); + writel(I2O_MESSAGE_SIZE(mptr - &msg->u.head[0]) | + sgl_offset, &msg->u.head[0]); list_add_tail(&ireq->queue, &dev->open_queue); dev->open_queue_depth++; @@ -920,11 +920,13 @@ static void i2o_block_request_fn(struct request_queue *q) queue_depth = ireq->i2o_blk_dev->open_queue_depth; - if (queue_depth < I2O_BLOCK_MAX_OPEN_REQUESTS) + if (queue_depth < I2O_BLOCK_MAX_OPEN_REQUESTS) { if (!i2o_block_transfer(req)) { blkdev_dequeue_request(req); continue; - } + } else + osm_info("transfer error\n"); + } if (queue_depth) break; @@ -938,7 +940,6 @@ static void i2o_block_request_fn(struct request_queue *q) INIT_WORK(&dreq->work, i2o_block_delayed_request_fn, dreq); - osm_info("transfer error\n"); if (!queue_delayed_work(i2o_block_driver.event_queue, &dreq->work, I2O_BLOCK_RETRY_TIME)) @@ -1007,6 +1008,7 @@ static struct i2o_block_device *i2o_block_device_alloc(void) } blk_queue_prep_rq(queue, i2o_block_prep_req_fn); + blk_queue_issue_flush_fn(queue, i2o_block_issue_flush); gd->major = I2O_MAJOR; gd->queue = queue; @@ -1039,17 +1041,27 @@ static struct i2o_block_device *i2o_block_device_alloc(void) static int i2o_block_probe(struct device *dev) { struct i2o_device *i2o_dev = to_i2o_device(dev); - struct i2o_block_device *i2o_blk_dev; struct i2o_controller *c = i2o_dev->iop; + struct i2o_block_device *i2o_blk_dev; struct gendisk *gd; struct request_queue *queue; static int unit = 0; int rc; u64 size; u32 blocksize; - u16 power; u32 flags, status; - int segments; + u16 body_size = 4; + unsigned short max_sectors; + +#ifdef CONFIG_I2O_EXT_ADAPTEC + if (c->adaptec) + body_size = 8; +#endif + + if (c->limit_sectors) + max_sectors = I2O_MAX_SECTORS_LIMITED; + else + max_sectors = I2O_MAX_SECTORS; /* skip devices which are used by IOP */ if (i2o_dev->lct_data.user_tid != 0xfff) { @@ -1057,8 +1069,6 @@ static int i2o_block_probe(struct device *dev) return -ENODEV; } - osm_info("New device detected (TID: %03x)\n", i2o_dev->lct_data.tid); - if (i2o_device_claim(i2o_dev)) { osm_warn("Unable to claim device. Installation aborted\n"); rc = -EFAULT; @@ -1086,50 +1096,44 @@ static int i2o_block_probe(struct device *dev) queue = gd->queue; queue->queuedata = i2o_blk_dev; - blk_queue_max_phys_segments(queue, I2O_MAX_SEGMENTS); - blk_queue_max_sectors(queue, I2O_MAX_SECTORS); - - if (c->short_req) - segments = 8; - else { - i2o_status_block *sb; + blk_queue_max_phys_segments(queue, I2O_MAX_PHYS_SEGMENTS); + blk_queue_max_sectors(queue, max_sectors); + blk_queue_max_hw_segments(queue, i2o_sg_tablesize(c, body_size)); - sb = c->status_block.virt; - - segments = (sb->inbound_frame_size - - sizeof(struct i2o_message) / 4 - 4) / 2; - } - - blk_queue_max_hw_segments(queue, segments); - - osm_debug("max sectors = %d\n", I2O_MAX_SECTORS); - osm_debug("phys segments = %d\n", I2O_MAX_SEGMENTS); - osm_debug("hw segments = %d\n", segments); + osm_debug("max sectors = %d\n", queue->max_phys_segments); + osm_debug("phys segments = %d\n", queue->max_sectors); + osm_debug("max hw segments = %d\n", queue->max_hw_segments); /* * Ask for the current media data. If that isn't supported * then we ask for the device capacity data */ - if (i2o_parm_field_get(i2o_dev, 0x0004, 1, &blocksize, 4) != 0 - || i2o_parm_field_get(i2o_dev, 0x0004, 0, &size, 8) != 0) { - i2o_parm_field_get(i2o_dev, 0x0000, 3, &blocksize, 4); - i2o_parm_field_get(i2o_dev, 0x0000, 4, &size, 8); - } - osm_debug("blocksize = %d\n", blocksize); + if (i2o_parm_field_get(i2o_dev, 0x0004, 1, &blocksize, 4) || + i2o_parm_field_get(i2o_dev, 0x0000, 3, &blocksize, 4)) { + blk_queue_hardsect_size(queue, blocksize); + } else + osm_warn("unable to get blocksize of %s\n", gd->disk_name); - if (i2o_parm_field_get(i2o_dev, 0x0000, 2, &power, 2)) - power = 0; + if (i2o_parm_field_get(i2o_dev, 0x0004, 0, &size, 8) || + i2o_parm_field_get(i2o_dev, 0x0000, 4, &size, 8)) { + set_capacity(gd, size >> KERNEL_SECTOR_SHIFT); + } else + osm_warn("could not get size of %s\n", gd->disk_name); + + if (!i2o_parm_field_get(i2o_dev, 0x0000, 2, &i2o_blk_dev->power, 2)) + i2o_blk_dev->power = 0; i2o_parm_field_get(i2o_dev, 0x0000, 5, &flags, 4); i2o_parm_field_get(i2o_dev, 0x0000, 6, &status, 4); - set_capacity(gd, size >> 9); - i2o_event_register(i2o_dev, &i2o_block_driver, 0, 0xffffffff); add_disk(gd); unit++; + osm_info("device added (TID: %03x): %s\n", i2o_dev->lct_data.tid, + i2o_blk_dev->gd->disk_name); + return 0; claim_release: @@ -1177,7 +1181,7 @@ static int __init i2o_block_init(void) goto exit; } - i2o_blk_req_pool.pool = mempool_create(I2O_REQ_MEMPOOL_SIZE, + i2o_blk_req_pool.pool = mempool_create(I2O_BLOCK_REQ_MEMPOOL_SIZE, mempool_alloc_slab, mempool_free_slab, i2o_blk_req_pool.slab); |