diff options
Diffstat (limited to 'drivers/scsi/hpsa.c')
| -rw-r--r-- | drivers/scsi/hpsa.c | 758 |
1 files changed, 517 insertions, 241 deletions
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index c016426b31b2..c5d0606ad097 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -86,10 +86,17 @@ static const struct pci_device_id hpsa_pci_device_id[] = { {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324a}, {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324b}, {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3233}, + {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3250}, + {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3251}, + {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3252}, + {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3253}, + {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3254}, #define PCI_DEVICE_ID_HP_CISSF 0x333f {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x333F}, {PCI_VENDOR_ID_HP, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0}, + {PCI_VENDOR_ID_COMPAQ, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, + PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0}, {0,} }; @@ -109,12 +116,18 @@ static struct board_type products[] = { {0x324b103C, "Smart Array P711m", &SA5_access}, {0x3233103C, "StorageWorks P1210m", &SA5_access}, {0x333F103C, "StorageWorks P1210m", &SA5_access}, + {0x3250103C, "Smart Array", &SA5_access}, + {0x3250113C, "Smart Array", &SA5_access}, + {0x3250123C, "Smart Array", &SA5_access}, + {0x3250133C, "Smart Array", &SA5_access}, + {0x3250143C, "Smart Array", &SA5_access}, {0xFFFF103C, "Unknown Smart Array", &SA5_access}, }; static int number_of_controllers; -static irqreturn_t do_hpsa_intr(int irq, void *dev_id); +static irqreturn_t do_hpsa_intr_intx(int irq, void *dev_id); +static irqreturn_t do_hpsa_intr_msi(int irq, void *dev_id); static int hpsa_ioctl(struct scsi_device *dev, int cmd, void *arg); static void start_io(struct ctlr_info *h); @@ -148,6 +161,8 @@ static ssize_t lunid_show(struct device *dev, struct device_attribute *attr, char *buf); static ssize_t unique_id_show(struct device *dev, struct device_attribute *attr, char *buf); +static ssize_t host_show_firmware_revision(struct device *dev, + struct device_attribute *attr, char *buf); static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno); static ssize_t host_store_rescan(struct device *dev, struct device_attribute *attr, const char *buf, size_t count); @@ -158,13 +173,21 @@ static void check_ioctl_unit_attention(struct ctlr_info *h, /* performant mode helper functions */ static void calc_bucket_map(int *bucket, int num_buckets, int nsgs, int *bucket_map); -static void hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h); +static __devinit void hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h); static inline u32 next_command(struct ctlr_info *h); +static int __devinit hpsa_find_cfg_addrs(struct pci_dev *pdev, + void __iomem *vaddr, u32 *cfg_base_addr, u64 *cfg_base_addr_index, + u64 *cfg_offset); +static int __devinit hpsa_pci_find_memory_BAR(struct pci_dev *pdev, + unsigned long *memory_bar); +static int __devinit hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id); static DEVICE_ATTR(raid_level, S_IRUGO, raid_level_show, NULL); static DEVICE_ATTR(lunid, S_IRUGO, lunid_show, NULL); static DEVICE_ATTR(unique_id, S_IRUGO, unique_id_show, NULL); static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan); +static DEVICE_ATTR(firmware_revision, S_IRUGO, + host_show_firmware_revision, NULL); static struct device_attribute *hpsa_sdev_attrs[] = { &dev_attr_raid_level, @@ -175,6 +198,7 @@ static struct device_attribute *hpsa_sdev_attrs[] = { static struct device_attribute *hpsa_shost_attrs[] = { &dev_attr_rescan, + &dev_attr_firmware_revision, NULL, }; @@ -260,6 +284,21 @@ static ssize_t host_store_rescan(struct device *dev, return count; } +static ssize_t host_show_firmware_revision(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct ctlr_info *h; + struct Scsi_Host *shost = class_to_shost(dev); + unsigned char *fwrev; + + h = shost_to_hba(shost); + if (!h->hba_inquiry_data) + return 0; + fwrev = &h->hba_inquiry_data[32]; + return snprintf(buf, 20, "%c%c%c%c\n", + fwrev[0], fwrev[1], fwrev[2], fwrev[3]); +} + /* Enqueuing and dequeuing functions for cmdlists. */ static inline void addQ(struct hlist_head *list, struct CommandList *c) { @@ -1440,12 +1479,6 @@ static int hpsa_update_device_info(struct ctlr_info *h, goto bail_out; } - /* As a side effect, record the firmware version number - * if we happen to be talking to the RAID controller. - */ - if (is_hba_lunid(scsi3addr)) - memcpy(h->firm_ver, &inq_buff[32], 4); - this_device->devtype = (inq_buff[0] & 0x1f); memcpy(this_device->scsi3addr, scsi3addr, 8); memcpy(this_device->vendor, &inq_buff[8], @@ -2826,9 +2859,8 @@ static inline bool interrupt_pending(struct ctlr_info *h) static inline long interrupt_not_for_us(struct ctlr_info *h) { - return !(h->msi_vector || h->msix_vector) && - ((h->access.intr_pending(h) == 0) || - (h->interrupts_enabled == 0)); + return (h->access.intr_pending(h) == 0) || + (h->interrupts_enabled == 0); } static inline int bad_tag(struct ctlr_info *h, u32 tag_index, @@ -2902,7 +2934,7 @@ static inline u32 process_nonindexed_cmd(struct ctlr_info *h, return next_command(h); } -static irqreturn_t do_hpsa_intr(int irq, void *dev_id) +static irqreturn_t do_hpsa_intr_intx(int irq, void *dev_id) { struct ctlr_info *h = dev_id; unsigned long flags; @@ -2911,6 +2943,26 @@ static irqreturn_t do_hpsa_intr(int irq, void *dev_id) if (interrupt_not_for_us(h)) return IRQ_NONE; spin_lock_irqsave(&h->lock, flags); + while (interrupt_pending(h)) { + raw_tag = get_next_completion(h); + while (raw_tag != FIFO_EMPTY) { + if (hpsa_tag_contains_index(raw_tag)) + raw_tag = process_indexed_cmd(h, raw_tag); + else + raw_tag = process_nonindexed_cmd(h, raw_tag); + } + } + spin_unlock_irqrestore(&h->lock, flags); + return IRQ_HANDLED; +} + +static irqreturn_t do_hpsa_intr_msi(int irq, void *dev_id) +{ + struct ctlr_info *h = dev_id; + unsigned long flags; + u32 raw_tag; + + spin_lock_irqsave(&h->lock, flags); raw_tag = get_next_completion(h); while (raw_tag != FIFO_EMPTY) { if (hpsa_tag_contains_index(raw_tag)) @@ -3052,17 +3104,75 @@ static __devinit int hpsa_reset_msi(struct pci_dev *pdev) return 0; } -/* This does a hard reset of the controller using PCI power management - * states. - */ -static __devinit int hpsa_hard_reset_controller(struct pci_dev *pdev) +static int hpsa_controller_hard_reset(struct pci_dev *pdev, + void * __iomem vaddr, bool use_doorbell) { - u16 pmcsr, saved_config_space[32]; - int i, pos; + u16 pmcsr; + int pos; - dev_info(&pdev->dev, "using PCI PM to reset controller\n"); + if (use_doorbell) { + /* For everything after the P600, the PCI power state method + * of resetting the controller doesn't work, so we have this + * other way using the doorbell register. + */ + dev_info(&pdev->dev, "using doorbell to reset controller\n"); + writel(DOORBELL_CTLR_RESET, vaddr + SA5_DOORBELL); + msleep(1000); + } else { /* Try to do it the PCI power state way */ + + /* Quoting from the Open CISS Specification: "The Power + * Management Control/Status Register (CSR) controls the power + * state of the device. The normal operating state is D0, + * CSR=00h. The software off state is D3, CSR=03h. To reset + * the controller, place the interface device in D3 then to D0, + * this causes a secondary PCI reset which will reset the + * controller." */ + + pos = pci_find_capability(pdev, PCI_CAP_ID_PM); + if (pos == 0) { + dev_err(&pdev->dev, + "hpsa_reset_controller: " + "PCI PM not supported\n"); + return -ENODEV; + } + dev_info(&pdev->dev, "using PCI PM to reset controller\n"); + /* enter the D3hot power management state */ + pci_read_config_word(pdev, pos + PCI_PM_CTRL, &pmcsr); + pmcsr &= ~PCI_PM_CTRL_STATE_MASK; + pmcsr |= PCI_D3hot; + pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); - /* This is very nearly the same thing as + msleep(500); + + /* enter the D0 power management state */ + pmcsr &= ~PCI_PM_CTRL_STATE_MASK; + pmcsr |= PCI_D0; + pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); + + msleep(500); + } + return 0; +} + +/* This does a hard reset of the controller using PCI power management + * states or the using the doorbell register. + */ +static __devinit int hpsa_kdump_hard_reset_controller(struct pci_dev *pdev) +{ + u16 saved_config_space[32]; + u64 cfg_offset; + u32 cfg_base_addr; + u64 cfg_base_addr_index; + void __iomem *vaddr; + unsigned long paddr; + u32 misc_fw_support, active_transport; + int rc, i; + struct CfgTable __iomem *cfgtable; + bool use_doorbell; + u32 board_id; + + /* For controllers as old as the P600, this is very nearly + * the same thing as * * pci_save_state(pci_dev); * pci_set_power_state(pci_dev, PCI_D3hot); @@ -3076,41 +3186,60 @@ static __devinit int hpsa_hard_reset_controller(struct pci_dev *pdev) * violate the ordering requirements for restoring the * configuration space from the CCISS document (see the * comment below). So we roll our own .... + * + * For controllers newer than the P600, the pci power state + * method of resetting doesn't work so we have another way + * using the doorbell register. */ + /* Exclude 640x boards. These are two pci devices in one slot + * which share a battery backed cache module. One controls the + * cache, the other accesses the cache through the one that controls + * it. If we reset the one controlling the cache, the other will + * likely not be happy. Just forbid resetting this conjoined mess. + * The 640x isn't really supported by hpsa anyway. + */ + hpsa_lookup_board_id(pdev, &board_id); + if (board_id == 0x409C0E11 || board_id == 0x409D0E11) + return -ENOTSUPP; + for (i = 0; i < 32; i++) pci_read_config_word(pdev, 2*i, &saved_config_space[i]); - pos = pci_find_capability(pdev, PCI_CAP_ID_PM); - if (pos == 0) { - dev_err(&pdev->dev, - "hpsa_reset_controller: PCI PM not supported\n"); - return -ENODEV; - } - /* Quoting from the Open CISS Specification: "The Power - * Management Control/Status Register (CSR) controls the power - * state of the device. The normal operating state is D0, - * CSR=00h. The software off state is D3, CSR=03h. To reset - * the controller, place the interface device in D3 then to - * D0, this causes a secondary PCI reset which will reset the - * controller." - */ + /* find the first memory BAR, so we can find the cfg table */ + rc = hpsa_pci_find_memory_BAR(pdev, &paddr); + if (rc) + return rc; + vaddr = remap_pci_mem(paddr, 0x250); + if (!vaddr) + return -ENOMEM; - /* enter the D3hot power management state */ - pci_read_config_word(pdev, pos + PCI_PM_CTRL, &pmcsr); - pmcsr &= ~PCI_PM_CTRL_STATE_MASK; - pmcsr |= PCI_D3hot; - pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); + /* find cfgtable in order to check if reset via doorbell is supported */ + rc = hpsa_find_cfg_addrs(pdev, vaddr, &cfg_base_addr, + &cfg_base_addr_index, &cfg_offset); + if (rc) + goto unmap_vaddr; + cfgtable = remap_pci_mem(pci_resource_start(pdev, + cfg_base_addr_index) + cfg_offset, sizeof(*cfgtable)); + if (!cfgtable) { + rc = -ENOMEM; + goto unmap_vaddr; + } - msleep(500); + /* If reset via doorbell register is supported, use that. */ + misc_fw_support = readl(&cfgtable->misc_fw_support); + use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET; - /* enter the D0 power management state */ - pmcsr &= ~PCI_PM_CTRL_STATE_MASK; - pmcsr |= PCI_D0; - pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); + /* The doorbell reset seems to cause lockups on some Smart + * Arrays (e.g. P410, P410i, maybe others). Until this is + * fixed or at least isolated, avoid the doorbell reset. + */ + use_doorbell = 0; - msleep(500); + rc = hpsa_controller_hard_reset(pdev, vaddr, use_doorbell); + if (rc) + goto unmap_cfgtable; /* Restore the PCI configuration space. The Open CISS * Specification says, "Restore the PCI Configuration @@ -3127,7 +3256,29 @@ static __devinit int hpsa_hard_reset_controller(struct pci_dev *pdev) wmb(); pci_write_config_word(pdev, 4, saved_config_space[2]); - return 0; + /* Some devices (notably the HP Smart Array 5i Controller) + need a little pause here */ + msleep(HPSA_POST_RESET_PAUSE_MSECS); + + /* Controller should be in simple mode at this point. If it's not, + * It means we're on one of those controllers which doesn't support + * the doorbell reset method and on which the PCI power management reset + * method doesn't work (P800, for example.) + * In those cases, pretend the reset worked and hope for the best. + */ + active_transport = readl(&cfgtable->TransportActive); + if (active_transport & PERFORMANT_MODE) { + dev_warn(&pdev->dev, "Unable to successfully reset controller," + " proceeding anyway.\n"); + rc = -ENOTSUPP; + } + +unmap_cfgtable: + iounmap(cfgtable); + +unmap_vaddr: + iounmap(vaddr); + return rc; } /* @@ -3135,9 +3286,9 @@ static __devinit int hpsa_hard_reset_controller(struct pci_dev *pdev) * the io functions. * This is for debug only. */ -#ifdef HPSA_DEBUG static void print_cfg_table(struct device *dev, struct CfgTable *tb) { +#ifdef HPSA_DEBUG int i; char temp_name[17]; @@ -3167,8 +3318,8 @@ static void print_cfg_table(struct device *dev, struct CfgTable *tb) dev_info(dev, " Server Name = %s\n", temp_name); dev_info(dev, " Heartbeat Counter = 0x%x\n\n\n", readl(&(tb->HeartBeat))); -} #endif /* HPSA_DEBUG */ +} static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr) { @@ -3209,8 +3360,7 @@ static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr) * controllers that are capable. If not, we use IO-APIC mode. */ -static void __devinit hpsa_interrupt_mode(struct ctlr_info *h, - struct pci_dev *pdev, u32 board_id) +static void __devinit hpsa_interrupt_mode(struct ctlr_info *h) { #ifdef CONFIG_PCI_MSI int err; @@ -3219,13 +3369,12 @@ static void __devinit hpsa_interrupt_mode(struct ctlr_info *h, }; /* Some boards advertise MSI but don't really support it */ - if ((board_id == 0x40700E11) || - (board_id == 0x40800E11) || - (board_id == 0x40820E11) || (board_id == 0x40830E11)) + if ((h->board_id == 0x40700E11) || (h->board_id == 0x40800E11) || + (h->board_id == 0x40820E11) || (h->board_id == 0x40830E11)) goto default_int_mode; - if (pci_find_capability(pdev, PCI_CAP_ID_MSIX)) { - dev_info(&pdev->dev, "MSIX\n"); - err = pci_enable_msix(pdev, hpsa_msix_entries, 4); + if (pci_find_capability(h->pdev, PCI_CAP_ID_MSIX)) { + dev_info(&h->pdev->dev, "MSIX\n"); + err = pci_enable_msix(h->pdev, hpsa_msix_entries, 4); if (!err) { h->intr[0] = hpsa_msix_entries[0].vector; h->intr[1] = hpsa_msix_entries[1].vector; @@ -3235,144 +3384,158 @@ static void __devinit hpsa_interrupt_mode(struct ctlr_info *h, return; } if (err > 0) { - dev_warn(&pdev->dev, "only %d MSI-X vectors " + dev_warn(&h->pdev->dev, "only %d MSI-X vectors " "available\n", err); goto default_int_mode; } else { - dev_warn(&pdev->dev, "MSI-X init failed %d\n", + dev_warn(&h->pdev->dev, "MSI-X init failed %d\n", err); goto default_int_mode; } } - if (pci_find_capability(pdev, PCI_CAP_ID_MSI)) { - dev_info(&pdev->dev, "MSI\n"); - if (!pci_enable_msi(pdev)) + if (pci_find_capability(h->pdev, PCI_CAP_ID_MSI)) { + dev_info(&h->pdev->dev, "MSI\n"); + if (!pci_enable_msi(h->pdev)) h->msi_vector = 1; else - dev_warn(&pdev->dev, "MSI init failed\n"); + dev_warn(&h->pdev->dev, "MSI init failed\n"); } default_int_mode: #endif /* CONFIG_PCI_MSI */ /* if we get here we're going to use the default interrupt mode */ - h->intr[PERF_MODE_INT] = pdev->irq; + h->intr[PERF_MODE_INT] = h->pdev->irq; } -static int __devinit hpsa_pci_init(struct ctlr_info *h, struct pci_dev *pdev) +static int __devinit hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id) { - ushort subsystem_vendor_id, subsystem_device_id, command; - u32 board_id, scratchpad = 0; - u64 cfg_offset; - u32 cfg_base_addr; - u64 cfg_base_addr_index; - u32 trans_offset; - int i, prod_index, err; + int i; + u32 subsystem_vendor_id, subsystem_device_id; subsystem_vendor_id = pdev->subsystem_vendor; subsystem_device_id = pdev->subsystem_device; - board_id = (((u32) (subsystem_device_id << 16) & 0xffff0000) | - subsystem_vendor_id); + *board_id = ((subsystem_device_id << 16) & 0xffff0000) | + subsystem_vendor_id; for (i = 0; i < ARRAY_SIZE(products); i++) - if (board_id == products[i].board_id) - break; - - prod_index = i; - - if (prod_index == ARRAY_SIZE(products)) { - prod_index--; - if (subsystem_vendor_id != PCI_VENDOR_ID_HP || - !hpsa_allow_any) { - dev_warn(&pdev->dev, "unrecognized board ID:" - " 0x%08lx, ignoring.\n", - (unsigned long) board_id); + if (*board_id == products[i].board_id) + return i; + + if ((subsystem_vendor_id != PCI_VENDOR_ID_HP && + subsystem_vendor_id != PCI_VENDOR_ID_COMPAQ) || + !hpsa_allow_any) { + dev_warn(&pdev->dev, "unrecognized board ID: " + "0x%08x, ignoring.\n", *board_id); return -ENODEV; - } - } - /* check to see if controller has been disabled - * BEFORE trying to enable it - */ - (void)pci_read_config_word(pdev, PCI_COMMAND, &command); - if (!(command & 0x02)) { - dev_warn(&pdev->dev, "controller appears to be disabled\n"); - return -ENODEV; - } - - err = pci_enable_device(pdev); - if (err) { - dev_warn(&pdev->dev, "unable to enable PCI device\n"); - return err; } + return ARRAY_SIZE(products) - 1; /* generic unknown smart array */ +} - err = pci_request_regions(pdev, "hpsa"); - if (err) { - dev_err(&pdev->dev, "cannot obtain PCI resources, aborting\n"); - return err; - } +static inline bool hpsa_board_disabled(struct pci_dev *pdev) +{ + u16 command; - /* If the kernel supports MSI/MSI-X we will try to enable that, - * else we use the IO-APIC interrupt assigned to us by system ROM. - */ - hpsa_interrupt_mode(h, pdev, board_id); + (void) pci_read_config_word(pdev, PCI_COMMAND, &command); + return ((command & PCI_COMMAND_MEMORY) == 0); +} - /* find the memory BAR */ - for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { - if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) - break; - } - if (i == DEVICE_COUNT_RESOURCE) { - dev_warn(&pdev->dev, "no memory BAR found\n"); - err = -ENODEV; - goto err_out_free_res; - } +static int __devinit hpsa_pci_find_memory_BAR(struct pci_dev *pdev, + unsigned long *memory_bar) +{ + int i; - h->paddr = pci_resource_start(pdev, i); /* addressing mode bits - * already removed - */ + for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) + if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) { + /* addressing mode bits already removed */ + *memory_bar = pci_resource_start(pdev, i); + dev_dbg(&pdev->dev, "memory BAR = %lx\n", + *memory_bar); + return 0; + } + dev_warn(&pdev->dev, "no memory BAR found\n"); + return -ENODEV; +} - h->vaddr = remap_pci_mem(h->paddr, 0x250); +static int __devinit hpsa_wait_for_board_ready(struct ctlr_info *h) +{ + int i; + u32 scratchpad; - /* Wait for the board to become ready. */ for (i = 0; i < HPSA_BOARD_READY_ITERATIONS; i++) { scratchpad = readl(h->vaddr + SA5_SCRATCHPAD_OFFSET); if (scratchpad == HPSA_FIRMWARE_READY) - break; + return 0; msleep(HPSA_BOARD_READY_POLL_INTERVAL_MSECS); } - if (scratchpad != HPSA_FIRMWARE_READY) { - dev_warn(&pdev->dev, "board not ready, timed out.\n"); - err = -ENODEV; - goto err_out_free_res; - } + dev_warn(&h->pdev->dev, "board not ready, timed out.\n"); + return -ENODEV; +} - /* get the address index number */ - cfg_base_addr = readl(h->vaddr + SA5_CTCFG_OFFSET); - cfg_base_addr &= (u32) 0x0000ffff; - cfg_base_addr_index = find_PCI_BAR_index(pdev, cfg_base_addr); - if (cfg_base_addr_index == -1) { +static int __devinit hpsa_find_cfg_addrs(struct pci_dev *pdev, + void __iomem *vaddr, u32 *cfg_base_addr, u64 *cfg_base_addr_index, + u64 *cfg_offset) +{ + *cfg_base_addr = readl(vaddr + SA5_CTCFG_OFFSET); + *cfg_offset = readl(vaddr + SA5_CTMEM_OFFSET); + *cfg_base_addr &= (u32) 0x0000ffff; + *cfg_base_addr_index = find_PCI_BAR_index(pdev, *cfg_base_addr); + if (*cfg_base_addr_index == -1) { dev_warn(&pdev->dev, "cannot find cfg_base_addr_index\n"); - err = -ENODEV; - goto err_out_free_res; + return -ENODEV; } + return 0; +} - cfg_offset = readl(h->vaddr + SA5_CTMEM_OFFSET); - h->cfgtable = remap_pci_mem(pci_resource_start(pdev, - cfg_base_addr_index) + cfg_offset, - sizeof(h->cfgtable)); +static int __devinit hpsa_find_cfgtables(struct ctlr_info *h) +{ + u64 cfg_offset; + u32 cfg_base_addr; + u64 cfg_base_addr_index; + u32 trans_offset; + int rc; + + rc = hpsa_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr, + &cfg_base_addr_index, &cfg_offset); + if (rc) + return rc; + h->cfgtable = remap_pci_mem(pci_resource_start(h->pdev, + cfg_base_addr_index) + cfg_offset, sizeof(*h->cfgtable)); + if (!h->cfgtable) + return -ENOMEM; /* Find performant mode table. */ - trans_offset = readl(&(h->cfgtable->TransMethodOffset)); - h->transtable = remap_pci_mem(pci_resource_start(pdev, + trans_offset = readl(&h->cfgtable->TransMethodOffset); + h->transtable = remap_pci_mem(pci_resource_start(h->pdev, cfg_base_addr_index)+cfg_offset+trans_offset, sizeof(*h->transtable)); + if (!h->transtable) + return -ENOMEM; + return 0; +} - h->board_id = board_id; +static void __devinit hpsa_get_max_perf_mode_cmds(struct ctlr_info *h) +{ h->max_commands = readl(&(h->cfgtable->MaxPerformantModeCommands)); - h->maxsgentries = readl(&(h->cfgtable->MaxScatterGatherElements)); + if (h->max_commands < 16) { + dev_warn(&h->pdev->dev, "Controller reports " + "max supported commands of %d, an obvious lie. " + "Using 16. Ensure that firmware is up to date.\n", + h->max_commands); + h->max_commands = 16; + } +} +/* Interrogate the hardware for some limits: + * max commands, max SG elements without chaining, and with chaining, + * SG chain block size, etc. + */ +static void __devinit hpsa_find_board_params(struct ctlr_info *h) +{ + hpsa_get_max_perf_mode_cmds(h); + h->nr_cmds = h->max_commands - 4; /* Allow room for some ioctls */ + 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; @@ -3382,45 +3545,49 @@ static int __devinit hpsa_pci_init(struct ctlr_info *h, struct pci_dev *pdev) 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 */ - h->nr_cmds = h->max_commands - 4; - +static inline bool hpsa_CISS_signature_present(struct ctlr_info *h) +{ if ((readb(&h->cfgtable->Signature[0]) != 'C') || (readb(&h->cfgtable->Signature[1]) != 'I') || (readb(&h->cfgtable->Signature[2]) != 'S') || (readb(&h->cfgtable->Signature[3]) != 'S')) { - dev_warn(&pdev->dev, "not a valid CISS config table\n"); - err = -ENODEV; - goto err_out_free_res; + dev_warn(&h->pdev->dev, "not a valid CISS config table\n"); + return false; } + return true; +} + +/* Need to enable prefetch in the SCSI core for 6400 in x86 */ +static inline void hpsa_enable_scsi_prefetch(struct ctlr_info *h) +{ #ifdef CONFIG_X86 - { - /* Need to enable prefetch in the SCSI core for 6400 in x86 */ - u32 prefetch; - prefetch = readl(&(h->cfgtable->SCSI_Prefetch)); - prefetch |= 0x100; - writel(prefetch, &(h->cfgtable->SCSI_Prefetch)); - } + u32 prefetch; + + prefetch = readl(&(h->cfgtable->SCSI_Prefetch)); + prefetch |= 0x100; + writel(prefetch, &(h->cfgtable->SCSI_Prefetch)); #endif +} - /* Disabling DMA prefetch for the P600 - * An ASIC bug may result in a prefetch beyond - * physical memory. - */ - if (board_id == 0x3225103C) { - u32 dma_prefetch; - dma_prefetch = readl(h->vaddr + I2O_DMA1_CFG); - dma_prefetch |= 0x8000; - writel(dma_prefetch, h->vaddr + I2O_DMA1_CFG); - } +/* Disable DMA prefetch for the P600. Otherwise an ASIC bug may result + * in a prefetch beyond physical memory. + */ +static inline void hpsa_p600_dma_prefetch_quirk(struct ctlr_info *h) +{ + u32 dma_prefetch; - h->max_commands = readl(&(h->cfgtable->CmdsOutMax)); - /* Update the field, and then ring the doorbell */ - writel(CFGTBL_Trans_Simple, &(h->cfgtable->HostWrite.TransportRequest)); - writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); + if (h->board_id != 0x3225103C) + return; + dma_prefetch = readl(h->vaddr + I2O_DMA1_CFG); + dma_prefetch |= 0x8000; + writel(dma_prefetch, h->vaddr + I2O_DMA1_CFG); +} + +static void __devinit hpsa_wait_for_mode_change_ack(struct ctlr_info *h) +{ + int i; /* under certain very rare conditions, this can take awhile. * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right @@ -3432,24 +3599,96 @@ static int __devinit hpsa_pci_init(struct ctlr_info *h, struct pci_dev *pdev) /* delay and try again */ msleep(10); } +} -#ifdef HPSA_DEBUG - print_cfg_table(&pdev->dev, h->cfgtable); -#endif /* HPSA_DEBUG */ +static int __devinit hpsa_enter_simple_mode(struct ctlr_info *h) +{ + u32 trans_support; + trans_support = readl(&(h->cfgtable->TransportSupport)); + if (!(trans_support & SIMPLE_MODE)) + return -ENOTSUPP; + + h->max_commands = readl(&(h->cfgtable->CmdsOutMax)); + /* Update the field, and then ring the doorbell */ + writel(CFGTBL_Trans_Simple, &(h->cfgtable->HostWrite.TransportRequest)); + writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); + hpsa_wait_for_mode_change_ack(h); + print_cfg_table(&h->pdev->dev, h->cfgtable); if (!(readl(&(h->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) { - dev_warn(&pdev->dev, "unable to get board into simple mode\n"); + dev_warn(&h->pdev->dev, + "unable to get board into simple mode\n"); + return -ENODEV; + } + return 0; +} + +static int __devinit hpsa_pci_init(struct ctlr_info *h) +{ + int prod_index, err; + + prod_index = hpsa_lookup_board_id(h->pdev, &h->board_id); + if (prod_index < 0) + return -ENODEV; + h->product_name = products[prod_index].product_name; + h->access = *(products[prod_index].access); + + if (hpsa_board_disabled(h->pdev)) { + dev_warn(&h->pdev->dev, "controller appears to be disabled\n"); + return -ENODEV; + } + err = pci_enable_device(h->pdev); + if (err) { + dev_warn(&h->pdev->dev, "unable to enable PCI device\n"); + return err; + } + + err = pci_request_regions(h->pdev, "hpsa"); + if (err) { + dev_err(&h->pdev->dev, + "cannot obtain PCI resources, aborting\n"); + return err; + } + hpsa_interrupt_mode(h); + err = hpsa_pci_find_memory_BAR(h->pdev, &h->paddr); + if (err) + goto err_out_free_res; + h->vaddr = remap_pci_mem(h->paddr, 0x250); + if (!h->vaddr) { + err = -ENOMEM; + goto err_out_free_res; + } + err = hpsa_wait_for_board_ready(h); + if (err) + goto err_out_free_res; + err = hpsa_find_cfgtables(h); + if (err) + goto err_out_free_res; + hpsa_find_board_params(h); + + if (!hpsa_CISS_signature_present(h)) { err = -ENODEV; goto err_out_free_res; } + hpsa_enable_scsi_prefetch(h); + hpsa_p600_dma_prefetch_quirk(h); + err = hpsa_enter_simple_mode(h); + if (err) + goto err_out_free_res; return 0; err_out_free_res: + if (h->transtable) + iounmap(h->transtable); + if (h->cfgtable) + iounmap(h->cfgtable); + if (h->vaddr) + iounmap(h->vaddr); /* * Deliberately omit pci_disable_device(): it does something nasty to * Smart Array controllers that pci_enable_device does not undo */ - pci_release_regions(pdev); + pci_release_regions(h->pdev); return err; } @@ -3469,33 +3708,51 @@ static void __devinit hpsa_hba_inquiry(struct ctlr_info *h) } } +static __devinit int hpsa_init_reset_devices(struct pci_dev *pdev) +{ + int rc, i; + + if (!reset_devices) + return 0; + + /* Reset the controller with a PCI power-cycle or via doorbell */ + rc = hpsa_kdump_hard_reset_controller(pdev); + + /* -ENOTSUPP here means we cannot reset the controller + * but it's already (and still) up and running in + * "performant mode". Or, it might be 640x, which can't reset + * due to concerns about shared bbwc between 6402/6404 pair. + */ + if (rc == -ENOTSUPP) + return 0; /* just try to do the kdump anyhow. */ + if (rc) + return -ENODEV; + if (hpsa_reset_msi(pdev)) + return -ENODEV; + + /* Now try to get the controller to respond to a no-op */ + for (i = 0; i < HPSA_POST_RESET_NOOP_RETRIES; i++) { + if (hpsa_noop(pdev) == 0) + break; + else + dev_warn(&pdev->dev, "no-op failed%s\n", + (i < 11 ? "; re-trying" : "")); + } + return 0; +} + static int __devinit hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) { - int i, rc; - int dac; + int dac, rc; struct ctlr_info *h; if (number_of_controllers == 0) printk(KERN_INFO DRIVER_NAME "\n"); - if (reset_devices) { - /* Reset the controller with a PCI power-cycle */ - if (hpsa_hard_reset_controller(pdev) || hpsa_reset_msi(pdev)) - return -ENODEV; - /* Some devices (notably the HP Smart Array 5i Controller) - need a little pause here */ - msleep(HPSA_POST_RESET_PAUSE_MSECS); - - /* Now try to get the controller to respond to a no-op */ - for (i = 0; i < HPSA_POST_RESET_NOOP_RETRIES; i++) { - if (hpsa_noop(pdev) == 0) - break; - else - dev_warn(&pdev->dev, "no-op failed%s\n", - (i < 11 ? "; re-trying" : "")); - } - } + rc = hpsa_init_reset_devices(pdev); + if (rc) + return rc; /* Command structures must be aligned on a 32-byte boundary because * the 5 lower bits of the address are used by the hardware. and by @@ -3507,17 +3764,17 @@ static int __devinit hpsa_init_one(struct pci_dev *pdev, if (!h) return -ENOMEM; + h->pdev = pdev; h->busy_initializing = 1; INIT_HLIST_HEAD(&h->cmpQ); INIT_HLIST_HEAD(&h->reqQ); - rc = hpsa_pci_init(h, pdev); + rc = hpsa_pci_init(h); if (rc != 0) goto clean1; sprintf(h->devname, "hpsa%d", number_of_controllers); h->ctlr = number_of_controllers; number_of_controllers++; - h->pdev = pdev; /* configure PCI DMA stuff */ rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); @@ -3535,8 +3792,13 @@ static int __devinit hpsa_init_one(struct pci_dev *pdev, /* make sure the board interrupts are off */ h->access.set_intr_mask(h, HPSA_INTR_OFF); - rc = request_irq(h->intr[PERF_MODE_INT], do_hpsa_intr, - IRQF_DISABLED, h->devname, h); + + if (h->msix_vector || h->msi_vector) + rc = request_irq(h->intr[PERF_MODE_INT], do_hpsa_intr_msi, + IRQF_DISABLED, h->devname, h); + else + rc = request_irq(h->intr[PERF_MODE_INT], do_hpsa_intr_intx, + IRQF_DISABLED, h->devname, h); if (rc) { dev_err(&pdev->dev, "unable to get irq %d for %s\n", h->intr[PERF_MODE_INT], h->devname); @@ -3663,6 +3925,8 @@ static void __devexit hpsa_remove_one(struct pci_dev *pdev) hpsa_unregister_scsi(h); /* unhook from SCSI subsystem */ hpsa_shutdown(pdev); iounmap(h->vaddr); + iounmap(h->transtable); + iounmap(h->cfgtable); hpsa_free_sg_chain_blocks(h); pci_free_consistent(h->pdev, h->nr_cmds * sizeof(struct CommandList), @@ -3742,38 +4006,35 @@ static void calc_bucket_map(int bucket[], int num_buckets, } } -static void hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h) +static __devinit void hpsa_enter_performant_mode(struct ctlr_info *h) { - u32 trans_support; - u64 trans_offset; + int i; + unsigned long register_value; + + /* This is a bit complicated. There are 8 registers on + * the controller which we write to to tell it 8 different + * sizes of commands which there may be. It's a way of + * reducing the DMA done to fetch each command. Encoded into + * each command's tag are 3 bits which communicate to the controller + * which of the eight sizes that command fits within. The size of + * each command depends on how many scatter gather entries there are. + * Each SG entry requires 16 bytes. The eight registers are programmed + * with the number of 16-byte blocks a command of that size requires. + * The smallest command possible requires 5 such 16 byte blocks. + * the largest command possible requires MAXSGENTRIES + 4 16-byte + * blocks. Note, this only extends to the SG entries contained + * within the command block, and does not extend to chained blocks + * of SG elements. bft[] contains the eight values we write to + * the registers. They are not evenly distributed, but have more + * sizes for small commands, and fewer sizes for larger commands. + */ + int bft[8] = {5, 6, 8, 10, 12, 20, 28, MAXSGENTRIES + 4}; + BUILD_BUG_ON(28 > MAXSGENTRIES + 4); /* 5 = 1 s/g entry or 4k * 6 = 2 s/g entry or 8k * 8 = 4 s/g entry or 16k * 10 = 6 s/g entry or 24k */ - int bft[8] = {5, 6, 8, 10, 12, 20, 28, 35}; /* for scatter/gathers */ - int i = 0; - int l = 0; - unsigned long register_value; - - trans_support = readl(&(h->cfgtable->TransportSupport)); - if (!(trans_support & PERFORMANT_MODE)) - return; - - h->max_commands = readl(&(h->cfgtable->MaxPerformantModeCommands)); - h->max_sg_entries = 32; - /* Performant mode ring buffer and supporting data structures */ - h->reply_pool_size = h->max_commands * sizeof(u64); - h->reply_pool = pci_alloc_consistent(h->pdev, h->reply_pool_size, - &(h->reply_pool_dhandle)); - - /* Need a block fetch table for performant mode */ - h->blockFetchTable = kmalloc(((h->max_sg_entries+1) * - sizeof(u32)), GFP_KERNEL); - - if ((h->reply_pool == NULL) - || (h->blockFetchTable == NULL)) - goto clean_up; h->reply_pool_wraparound = 1; /* spec: init to 1 */ @@ -3781,7 +4042,6 @@ static void hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h) memset(h->reply_pool, 0, h->reply_pool_size); h->reply_pool_head = h->reply_pool; - trans_offset = readl(&(h->cfgtable->TransMethodOffset)); bft[7] = h->max_sg_entries + 4; calc_bucket_map(bft, ARRAY_SIZE(bft), 32, h->blockFetchTable); for (i = 0; i < 8; i++) @@ -3797,23 +4057,39 @@ static void hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h) writel(CFGTBL_Trans_Performant, &(h->cfgtable->HostWrite.TransportRequest)); writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); - /* under certain very rare conditions, this can take awhile. - * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right - * as we enter this code.) */ - for (l = 0; l < MAX_CONFIG_WAIT; l++) { - register_value = readl(h->vaddr + SA5_DOORBELL); - if (!(register_value & CFGTBL_ChangeReq)) - break; - /* delay and try again */ - set_current_state(TASK_INTERRUPTIBLE); - schedule_timeout(10); - } + hpsa_wait_for_mode_change_ack(h); register_value = readl(&(h->cfgtable->TransportActive)); if (!(register_value & CFGTBL_Trans_Performant)) { dev_warn(&h->pdev->dev, "unable to get board into" " performant mode\n"); return; } +} + +static __devinit void hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h) +{ + u32 trans_support; + + trans_support = readl(&(h->cfgtable->TransportSupport)); + if (!(trans_support & PERFORMANT_MODE)) + return; + + hpsa_get_max_perf_mode_cmds(h); + h->max_sg_entries = 32; + /* Performant mode ring buffer and supporting data structures */ + h->reply_pool_size = h->max_commands * sizeof(u64); + h->reply_pool = pci_alloc_consistent(h->pdev, h->reply_pool_size, + &(h->reply_pool_dhandle)); + + /* Need a block fetch table for performant mode */ + h->blockFetchTable = kmalloc(((h->max_sg_entries+1) * + sizeof(u32)), GFP_KERNEL); + + if ((h->reply_pool == NULL) + || (h->blockFetchTable == NULL)) + goto clean_up; + + hpsa_enter_performant_mode(h); /* Change the access methods to the performant access methods */ h->access = SA5_performant_access; |