From 667e23d4e968f6826dc5d3e81238a7f1f343fb4f Mon Sep 17 00:00:00 2001 From: "Stephen M. Cameron" Date: Thu, 25 Feb 2010 14:02:51 -0600 Subject: [SCSI] hpsa: allow modifying device queue depth. Signed-off-by: Stephen M. Cameron Signed-off-by: James Bottomley --- drivers/scsi/hpsa.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'drivers/scsi/hpsa.c') diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index 03697ba94251..745c62444d25 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -43,6 +43,7 @@ #include #include #include +#include #include #include #include @@ -134,6 +135,8 @@ static int hpsa_scsi_queue_command(struct scsi_cmnd *cmd, static void hpsa_scan_start(struct Scsi_Host *); static int hpsa_scan_finished(struct Scsi_Host *sh, unsigned long elapsed_time); +static int hpsa_change_queue_depth(struct scsi_device *sdev, + int qdepth, int reason); static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd); static int hpsa_slave_alloc(struct scsi_device *sdev); @@ -182,6 +185,7 @@ static struct scsi_host_template hpsa_driver_template = { .queuecommand = hpsa_scsi_queue_command, .scan_start = hpsa_scan_start, .scan_finished = hpsa_scan_finished, + .change_queue_depth = hpsa_change_queue_depth, .this_id = -1, .sg_tablesize = MAXSGENTRIES, .use_clustering = ENABLE_CLUSTERING, @@ -2077,6 +2081,23 @@ static int hpsa_scan_finished(struct Scsi_Host *sh, return finished; } +static int hpsa_change_queue_depth(struct scsi_device *sdev, + int qdepth, int reason) +{ + struct ctlr_info *h = sdev_to_hba(sdev); + + if (reason != SCSI_QDEPTH_DEFAULT) + return -ENOTSUPP; + + if (qdepth < 1) + qdepth = 1; + else + if (qdepth > h->nr_cmds) + qdepth = h->nr_cmds; + scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth); + return sdev->queue_depth; +} + static void hpsa_unregister_scsi(struct ctlr_info *h) { /* we are being forcibly unloaded, and may not refuse. */ -- cgit v1.2.3 From f0edafc6628f924a424ab4059df74f46f4f4241e Mon Sep 17 00:00:00 2001 From: "Stephen M. Cameron" Date: Thu, 25 Feb 2010 14:02:56 -0600 Subject: [SCSI] hpsa: fix firmwart typo Signed-off-by: Stephen M. Cameron Signed-off-by: James Bottomley --- drivers/scsi/hpsa.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/scsi/hpsa.c') diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index 745c62444d25..3734f31d08a8 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -2982,7 +2982,7 @@ static irqreturn_t do_hpsa_intr(int irq, void *dev_id) return IRQ_HANDLED; } -/* Send a message CDB to the firmwart. */ +/* Send a message CDB to the firmware. */ static __devinit int hpsa_message(struct pci_dev *pdev, unsigned char opcode, unsigned char type) { -- cgit v1.2.3 From 5512672f75611e9239669c6a4dce648b8d60fedd Mon Sep 17 00:00:00 2001 From: "Stephen M. Cameron" Date: Thu, 25 Feb 2010 14:03:01 -0600 Subject: [SCSI] hpsa: fix scsi status mis-shift The SCSI status does not need to be shifted. Signed-off-by: Stephen M. Cameron Signed-off-by: James Bottomley --- drivers/scsi/hpsa.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/scsi/hpsa.c') diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index 3734f31d08a8..604b4c95a440 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -1006,7 +1006,7 @@ static void complete_scsi_command(struct CommandList *cp, cmd->result = (DID_OK << 16); /* host byte */ cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */ - cmd->result |= (ei->ScsiStatus << 1); + cmd->result |= ei->ScsiStatus; /* copy the sense data whether we need to or not. */ memcpy(cmd->sense_buffer, ei->SenseInfo, -- cgit v1.2.3 From e9ea04a65ad842452cbee92b5c865af7fed17f63 Mon Sep 17 00:00:00 2001 From: "Stephen M. Cameron" Date: Thu, 25 Feb 2010 14:03:06 -0600 Subject: [SCSI] hpsa: return -ENOMEM, not -1 Signed-off-by: Stephen M. Cameron Signed-off-by: James Bottomley --- drivers/scsi/hpsa.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/scsi/hpsa.c') diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index 604b4c95a440..a72a18eabe24 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -1386,7 +1386,7 @@ static int hpsa_send_reset(struct ctlr_info *h, unsigned char *scsi3addr) if (c == NULL) { /* trouble... */ dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n"); - return -1; + return -ENOMEM; } fill_cmd(c, HPSA_DEVICE_RESET_MSG, h, NULL, 0, 0, scsi3addr, TYPE_MSG); -- cgit v1.2.3 From 31468401ccf64322ca99fe05fbe64f1551240f57 Mon Sep 17 00:00:00 2001 From: Mike Miller Date: Thu, 25 Feb 2010 14:03:12 -0600 Subject: [SCSI] hpsa: remove scan thread The intent of the scan thread was to allow a UNIT ATTENTION/LUN DATA CHANGED condition encountered in the interrupt handler to trigger a rescan of devices, which can't be done in interrupt context. However, we weren't able to get this to work, due to multiple such UNIT ATTENTION conditions arriving during the rescan, during updating of the SCSI mid layer, etc. There's no way to tell the devices, "stand still while I scan you!" Since it doesn't work, there's no point in having the thread, as the rescan triggered via ioctl or sysfs can be done without such a thread. Signed-off-by: Mike Miller Signed-off-by: Stephen M. Cameron Signed-off-by: James Bottomley --- drivers/scsi/hpsa.c | 167 ++-------------------------------------------------- drivers/scsi/hpsa.h | 3 - 2 files changed, 4 insertions(+), 166 deletions(-) (limited to 'drivers/scsi/hpsa.c') diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index a72a18eabe24..3d43bb245ac8 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -53,7 +53,7 @@ #include "hpsa.h" /* HPSA_DRIVER_VERSION must be 3 byte values (0-255) separated by '.' */ -#define HPSA_DRIVER_VERSION "2.0.1-3" +#define HPSA_DRIVER_VERSION "2.0.2-1" #define DRIVER_NAME "HP HPSA Driver (v " HPSA_DRIVER_VERSION ")" /* How long to wait (in milliseconds) for board to go into simple mode */ @@ -212,133 +212,6 @@ static inline struct ctlr_info *shost_to_hba(struct Scsi_Host *sh) return (struct ctlr_info *) *priv; } -static struct task_struct *hpsa_scan_thread; -static DEFINE_MUTEX(hpsa_scan_mutex); -static LIST_HEAD(hpsa_scan_q); -static int hpsa_scan_func(void *data); - -/** - * add_to_scan_list() - add controller to rescan queue - * @h: Pointer to the controller. - * - * Adds the controller to the rescan queue if not already on the queue. - * - * returns 1 if added to the queue, 0 if skipped (could be on the - * queue already, or the controller could be initializing or shutting - * down). - **/ -static int add_to_scan_list(struct ctlr_info *h) -{ - struct ctlr_info *test_h; - int found = 0; - int ret = 0; - - if (h->busy_initializing) - return 0; - - /* - * If we don't get the lock, it means the driver is unloading - * and there's no point in scheduling a new scan. - */ - if (!mutex_trylock(&h->busy_shutting_down)) - return 0; - - mutex_lock(&hpsa_scan_mutex); - list_for_each_entry(test_h, &hpsa_scan_q, scan_list) { - if (test_h == h) { - found = 1; - break; - } - } - if (!found && !h->busy_scanning) { - INIT_COMPLETION(h->scan_wait); - list_add_tail(&h->scan_list, &hpsa_scan_q); - ret = 1; - } - mutex_unlock(&hpsa_scan_mutex); - mutex_unlock(&h->busy_shutting_down); - - return ret; -} - -/** - * remove_from_scan_list() - remove controller from rescan queue - * @h: Pointer to the controller. - * - * Removes the controller from the rescan queue if present. Blocks if - * the controller is currently conducting a rescan. The controller - * can be in one of three states: - * 1. Doesn't need a scan - * 2. On the scan list, but not scanning yet (we remove it) - * 3. Busy scanning (and not on the list). In this case we want to wait for - * the scan to complete to make sure the scanning thread for this - * controller is completely idle. - **/ -static void remove_from_scan_list(struct ctlr_info *h) -{ - struct ctlr_info *test_h, *tmp_h; - - mutex_lock(&hpsa_scan_mutex); - list_for_each_entry_safe(test_h, tmp_h, &hpsa_scan_q, scan_list) { - if (test_h == h) { /* state 2. */ - list_del(&h->scan_list); - complete_all(&h->scan_wait); - mutex_unlock(&hpsa_scan_mutex); - return; - } - } - if (h->busy_scanning) { /* state 3. */ - mutex_unlock(&hpsa_scan_mutex); - wait_for_completion(&h->scan_wait); - } else { /* state 1, nothing to do. */ - mutex_unlock(&hpsa_scan_mutex); - } -} - -/* hpsa_scan_func() - kernel thread used to rescan controllers - * @data: Ignored. - * - * A kernel thread used scan for drive topology changes on - * controllers. The thread processes only one controller at a time - * using a queue. Controllers are added to the queue using - * add_to_scan_list() and removed from the queue either after done - * processing or using remove_from_scan_list(). - * - * returns 0. - **/ -static int hpsa_scan_func(__attribute__((unused)) void *data) -{ - struct ctlr_info *h; - int host_no; - - while (1) { - set_current_state(TASK_INTERRUPTIBLE); - schedule(); - if (kthread_should_stop()) - break; - - while (1) { - mutex_lock(&hpsa_scan_mutex); - if (list_empty(&hpsa_scan_q)) { - mutex_unlock(&hpsa_scan_mutex); - break; - } - h = list_entry(hpsa_scan_q.next, struct ctlr_info, - scan_list); - list_del(&h->scan_list); - h->busy_scanning = 1; - mutex_unlock(&hpsa_scan_mutex); - host_no = h->scsi_host ? h->scsi_host->host_no : -1; - hpsa_scan_start(h->scsi_host); - complete_all(&h->scan_wait); - mutex_lock(&hpsa_scan_mutex); - h->busy_scanning = 0; - mutex_unlock(&hpsa_scan_mutex); - } - } - return 0; -} - static int check_for_unit_attention(struct ctlr_info *h, struct CommandList *c) { @@ -356,21 +229,8 @@ static int check_for_unit_attention(struct ctlr_info *h, break; case REPORT_LUNS_CHANGED: dev_warn(&h->pdev->dev, "hpsa%d: report LUN data " - "changed\n", h->ctlr); + "changed, action required\n", h->ctlr); /* - * Here, we could call add_to_scan_list and wake up the scan thread, - * except that it's quite likely that we will get more than one - * REPORT_LUNS_CHANGED condition in quick succession, which means - * that those which occur after the first one will likely happen - * *during* the hpsa_scan_thread's rescan. And the rescan code is not - * robust enough to restart in the middle, undoing what it has already - * done, and it's not clear that it's even possible to do this, since - * part of what it does is notify the SCSI mid layer, which starts - * doing it's own i/o to read partition tables and so on, and the - * driver doesn't have visibility to know what might need undoing. - * In any event, if possible, it is horribly complicated to get right - * so we just don't do it for now. - * * Note: this REPORT_LUNS_CHANGED condition only occurs on the MSA2012. */ break; @@ -397,10 +257,7 @@ static ssize_t host_store_rescan(struct device *dev, struct ctlr_info *h; struct Scsi_Host *shost = class_to_shost(dev); h = shost_to_hba(shost); - if (add_to_scan_list(h)) { - wake_up_process(hpsa_scan_thread); - wait_for_completion_interruptible(&h->scan_wait); - } + hpsa_scan_start(h->scsi_host); return count; } @@ -3553,8 +3410,6 @@ static int __devinit hpsa_init_one(struct pci_dev *pdev, h->busy_initializing = 1; INIT_HLIST_HEAD(&h->cmpQ); INIT_HLIST_HEAD(&h->reqQ); - mutex_init(&h->busy_shutting_down); - init_completion(&h->scan_wait); rc = hpsa_pci_init(h, pdev); if (rc != 0) goto clean1; @@ -3702,8 +3557,6 @@ static void __devexit hpsa_remove_one(struct pci_dev *pdev) return; } h = pci_get_drvdata(pdev); - mutex_lock(&h->busy_shutting_down); - remove_from_scan_list(h); hpsa_unregister_scsi(h); /* unhook from SCSI subsystem */ hpsa_shutdown(pdev); iounmap(h->vaddr); @@ -3724,7 +3577,6 @@ static void __devexit hpsa_remove_one(struct pci_dev *pdev) */ pci_release_regions(pdev); pci_set_drvdata(pdev, NULL); - mutex_unlock(&h->busy_shutting_down); kfree(h); } @@ -3878,23 +3730,12 @@ clean_up: */ static int __init hpsa_init(void) { - int err; - /* Start the scan thread */ - hpsa_scan_thread = kthread_run(hpsa_scan_func, NULL, "hpsa_scan"); - if (IS_ERR(hpsa_scan_thread)) { - err = PTR_ERR(hpsa_scan_thread); - return -ENODEV; - } - err = pci_register_driver(&hpsa_pci_driver); - if (err) - kthread_stop(hpsa_scan_thread); - return err; + return pci_register_driver(&hpsa_pci_driver); } static void __exit hpsa_cleanup(void) { pci_unregister_driver(&hpsa_pci_driver); - kthread_stop(hpsa_scan_thread); } module_init(hpsa_init); diff --git a/drivers/scsi/hpsa.h b/drivers/scsi/hpsa.h index a0502b3ac17e..fc15215145d9 100644 --- a/drivers/scsi/hpsa.h +++ b/drivers/scsi/hpsa.h @@ -97,9 +97,6 @@ struct ctlr_info { int scan_finished; spinlock_t scan_lock; wait_queue_head_t scan_wait_queue; - struct mutex busy_shutting_down; - struct list_head scan_list; - struct completion scan_wait; struct Scsi_Host *scsi_host; spinlock_t devlock; /* to protect hba[ctlr]->dev[]; */ -- cgit v1.2.3 From ff9fea94546afa2a496c15354533f06088347f6e Mon Sep 17 00:00:00 2001 From: "Stephen M. Cameron" Date: Thu, 25 Feb 2010 14:03:17 -0600 Subject: [SCSI] hpsa: mark hpsa_pci_init as __devinit Signed-off-by: Stephen M. Cameron Signed-off-by: James Bottomley --- drivers/scsi/hpsa.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/scsi/hpsa.c') diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index 3d43bb245ac8..2e1edce9b20e 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -3174,7 +3174,7 @@ default_int_mode: h->intr[PERF_MODE_INT] = pdev->irq; } -static int hpsa_pci_init(struct ctlr_info *h, struct pci_dev *pdev) +static int __devinit hpsa_pci_init(struct ctlr_info *h, struct pci_dev *pdev) { ushort subsystem_vendor_id, subsystem_device_id, command; u32 board_id, scratchpad = 0; -- cgit v1.2.3 From 33a2ffce51d9598380d73c515a27fc6cff3bd9c4 Mon Sep 17 00:00:00 2001 From: "Stephen M. Cameron" Date: Thu, 25 Feb 2010 14:03:27 -0600 Subject: [SCSI] hpsa: Increase the number of scatter gather elements supported. This uses the scatter-gather chaining feature of Smart Array controllers. 32 scatter-gather elements are embedded in the "command list", and the last element in the list may be marked as a "chain pointer", and point to an additional block of scatter gather elements. The precise number of scatter gather elements supported is dependent on the particular kind of Smart Array, and is determined at runtime by querying the hardware. Signed-off-by: Stephen M. Cameron Signed-off-by: James Bottomley --- drivers/scsi/hpsa.c | 134 ++++++++++++++++++++++++++++++++++++++++++++---- drivers/scsi/hpsa.h | 4 ++ drivers/scsi/hpsa_cmd.h | 7 +-- 3 files changed, 131 insertions(+), 14 deletions(-) (limited to 'drivers/scsi/hpsa.c') diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index 2e1edce9b20e..183d3a43c280 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -187,7 +187,6 @@ static struct scsi_host_template hpsa_driver_template = { .scan_finished = hpsa_scan_finished, .change_queue_depth = hpsa_change_queue_depth, .this_id = -1, - .sg_tablesize = MAXSGENTRIES, .use_clustering = ENABLE_CLUSTERING, .eh_device_reset_handler = hpsa_eh_device_reset_handler, .ioctl = hpsa_ioctl, @@ -844,6 +843,76 @@ static void hpsa_scsi_setup(struct ctlr_info *h) spin_lock_init(&h->devlock); } +static void hpsa_free_sg_chain_blocks(struct ctlr_info *h) +{ + int i; + + if (!h->cmd_sg_list) + return; + for (i = 0; i < h->nr_cmds; i++) { + kfree(h->cmd_sg_list[i]); + h->cmd_sg_list[i] = NULL; + } + kfree(h->cmd_sg_list); + h->cmd_sg_list = NULL; +} + +static int hpsa_allocate_sg_chain_blocks(struct ctlr_info *h) +{ + int i; + + if (h->chainsize <= 0) + return 0; + + h->cmd_sg_list = kzalloc(sizeof(*h->cmd_sg_list) * h->nr_cmds, + GFP_KERNEL); + if (!h->cmd_sg_list) + return -ENOMEM; + for (i = 0; i < h->nr_cmds; i++) { + h->cmd_sg_list[i] = kmalloc(sizeof(*h->cmd_sg_list[i]) * + h->chainsize, GFP_KERNEL); + if (!h->cmd_sg_list[i]) + goto clean; + } + return 0; + +clean: + hpsa_free_sg_chain_blocks(h); + return -ENOMEM; +} + +static void hpsa_map_sg_chain_block(struct ctlr_info *h, + struct CommandList *c) +{ + struct SGDescriptor *chain_sg, *chain_block; + u64 temp64; + + chain_sg = &c->SG[h->max_cmd_sg_entries - 1]; + chain_block = h->cmd_sg_list[c->cmdindex]; + chain_sg->Ext = HPSA_SG_CHAIN; + chain_sg->Len = sizeof(*chain_sg) * + (c->Header.SGTotal - h->max_cmd_sg_entries); + temp64 = pci_map_single(h->pdev, chain_block, chain_sg->Len, + PCI_DMA_TODEVICE); + chain_sg->Addr.lower = (u32) (temp64 & 0x0FFFFFFFFULL); + chain_sg->Addr.upper = (u32) ((temp64 >> 32) & 0x0FFFFFFFFULL); +} + +static void hpsa_unmap_sg_chain_block(struct ctlr_info *h, + struct CommandList *c) +{ + struct SGDescriptor *chain_sg; + union u64bit temp64; + + if (c->Header.SGTotal <= h->max_cmd_sg_entries) + return; + + chain_sg = &c->SG[h->max_cmd_sg_entries - 1]; + temp64.val32.lower = chain_sg->Addr.lower; + temp64.val32.upper = chain_sg->Addr.upper; + pci_unmap_single(h->pdev, temp64.val, chain_sg->Len, PCI_DMA_TODEVICE); +} + static void complete_scsi_command(struct CommandList *cp, int timeout, u32 tag) { @@ -860,6 +929,8 @@ static void complete_scsi_command(struct CommandList *cp, h = cp->h; scsi_dma_unmap(cmd); /* undo the DMA mappings */ + if (cp->Header.SGTotal > h->max_cmd_sg_entries) + hpsa_unmap_sg_chain_block(h, cp); cmd->result = (DID_OK << 16); /* host byte */ cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */ @@ -1064,6 +1135,7 @@ static int hpsa_scsi_detect(struct ctlr_info *h) sh->max_id = HPSA_MAX_LUN; sh->can_queue = h->nr_cmds; sh->cmd_per_lun = h->nr_cmds; + sh->sg_tablesize = h->maxsgentries; h->scsi_host = sh; sh->hostdata[0] = (unsigned long) h; sh->irq = h->intr[PERF_MODE_INT]; @@ -1765,16 +1837,17 @@ out: * dma mapping and fills in the scatter gather entries of the * hpsa command, cp. */ -static int hpsa_scatter_gather(struct pci_dev *pdev, +static int hpsa_scatter_gather(struct ctlr_info *h, struct CommandList *cp, struct scsi_cmnd *cmd) { unsigned int len; struct scatterlist *sg; u64 addr64; - int use_sg, i; + int use_sg, i, sg_index, chained; + struct SGDescriptor *curr_sg; - BUG_ON(scsi_sg_count(cmd) > MAXSGENTRIES); + BUG_ON(scsi_sg_count(cmd) > h->maxsgentries); use_sg = scsi_dma_map(cmd); if (use_sg < 0) @@ -1783,15 +1856,33 @@ static int hpsa_scatter_gather(struct pci_dev *pdev, if (!use_sg) goto sglist_finished; + curr_sg = cp->SG; + chained = 0; + sg_index = 0; scsi_for_each_sg(cmd, sg, use_sg, i) { + if (i == h->max_cmd_sg_entries - 1 && + use_sg > h->max_cmd_sg_entries) { + chained = 1; + curr_sg = h->cmd_sg_list[cp->cmdindex]; + sg_index = 0; + } addr64 = (u64) sg_dma_address(sg); len = sg_dma_len(sg); - cp->SG[i].Addr.lower = - (u32) (addr64 & (u64) 0x00000000FFFFFFFF); - cp->SG[i].Addr.upper = - (u32) ((addr64 >> 32) & (u64) 0x00000000FFFFFFFF); - cp->SG[i].Len = len; - cp->SG[i].Ext = 0; /* we are not chaining */ + curr_sg->Addr.lower = (u32) (addr64 & 0x0FFFFFFFFULL); + curr_sg->Addr.upper = (u32) ((addr64 >> 32) & 0x0FFFFFFFFULL); + curr_sg->Len = len; + curr_sg->Ext = 0; /* we are not chaining */ + curr_sg++; + } + + if (use_sg + chained > h->maxSG) + h->maxSG = use_sg + chained; + + if (chained) { + cp->Header.SGList = h->max_cmd_sg_entries; + cp->Header.SGTotal = (u16) (use_sg + 1); + hpsa_map_sg_chain_block(h, cp); + return 0; } sglist_finished: @@ -1887,7 +1978,7 @@ static int hpsa_scsi_queue_command(struct scsi_cmnd *cmd, break; } - if (hpsa_scatter_gather(h->pdev, c, cmd) < 0) { /* Fill SG list */ + if (hpsa_scatter_gather(h, c, cmd) < 0) { /* Fill SG list */ cmd_free(h, c); return SCSI_MLQUEUE_HOST_BUSY; } @@ -3283,6 +3374,23 @@ static int __devinit hpsa_pci_init(struct ctlr_info *h, struct pci_dev *pdev) h->board_id = board_id; h->max_commands = readl(&(h->cfgtable->MaxPerformantModeCommands)); + h->maxsgentries = readl(&(h->cfgtable->MaxScatterGatherElements)); + + /* + * Limit in-command s/g elements to 32 save dma'able memory. + * Howvever spec says if 0, use 31 + */ + + h->max_cmd_sg_entries = 31; + if (h->maxsgentries > 512) { + h->max_cmd_sg_entries = 32; + h->chainsize = h->maxsgentries - h->max_cmd_sg_entries + 1; + h->maxsgentries--; /* save one for chain pointer */ + } else { + h->maxsgentries = 31; /* default to traditional values */ + h->chainsize = 0; + } + h->product_name = products[prod_index].product_name; h->access = *(products[prod_index].access); /* Allow room for some ioctls */ @@ -3463,6 +3571,8 @@ static int __devinit hpsa_init_one(struct pci_dev *pdev, rc = -ENOMEM; goto clean4; } + if (hpsa_allocate_sg_chain_blocks(h)) + goto clean4; spin_lock_init(&h->lock); spin_lock_init(&h->scan_lock); init_waitqueue_head(&h->scan_wait_queue); @@ -3485,6 +3595,7 @@ static int __devinit hpsa_init_one(struct pci_dev *pdev, return 1; clean4: + hpsa_free_sg_chain_blocks(h); kfree(h->cmd_pool_bits); if (h->cmd_pool) pci_free_consistent(h->pdev, @@ -3560,6 +3671,7 @@ static void __devexit hpsa_remove_one(struct pci_dev *pdev) hpsa_unregister_scsi(h); /* unhook from SCSI subsystem */ hpsa_shutdown(pdev); iounmap(h->vaddr); + hpsa_free_sg_chain_blocks(h); pci_free_consistent(h->pdev, h->nr_cmds * sizeof(struct CommandList), h->cmd_pool, h->cmd_pool_dhandle); diff --git a/drivers/scsi/hpsa.h b/drivers/scsi/hpsa.h index fc15215145d9..1bb5233b09a0 100644 --- a/drivers/scsi/hpsa.h +++ b/drivers/scsi/hpsa.h @@ -83,6 +83,10 @@ struct ctlr_info { unsigned int maxQsinceinit; unsigned int maxSG; spinlock_t lock; + int maxsgentries; + u8 max_cmd_sg_entries; + int chainsize; + struct SGDescriptor **cmd_sg_list; /* pointers to command and error info pool */ struct CommandList *cmd_pool; diff --git a/drivers/scsi/hpsa_cmd.h b/drivers/scsi/hpsa_cmd.h index 43b6f1cffe34..cb0c2385f3f6 100644 --- a/drivers/scsi/hpsa_cmd.h +++ b/drivers/scsi/hpsa_cmd.h @@ -23,7 +23,8 @@ /* general boundary defintions */ #define SENSEINFOBYTES 32 /* may vary between hbas */ -#define MAXSGENTRIES 31 +#define MAXSGENTRIES 32 +#define HPSA_SG_CHAIN 0x80000000 #define MAXREPLYQS 256 /* Command Status value */ @@ -321,8 +322,8 @@ struct CommandList { */ #define IS_32_BIT ((8 - sizeof(long))/4) #define IS_64_BIT (!IS_32_BIT) -#define PAD_32 (8) -#define PAD_64 (0) +#define PAD_32 (24) +#define PAD_64 (16) #define COMMANDLIST_PAD (IS_32_BIT * PAD_32 + IS_64_BIT * PAD_64) u8 pad[COMMANDLIST_PAD]; }; -- cgit v1.2.3