/* * Disk Array driver for HP Smart Array SAS controllers * Copyright 2000, 2009 Hewlett-Packard Development Company, L.P. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or * NON INFRINGEMENT. See the GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * * Questions/Comments/Bugfixes to iss_storagedev@hp.com * */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "hpsa_cmd.h" #include "hpsa.h" /* HPSA_DRIVER_VERSION must be 3 byte values (0-255) separated by '.' */ #define HPSA_DRIVER_VERSION "1.0.0" #define DRIVER_NAME "HP HPSA Driver (v " HPSA_DRIVER_VERSION ")" /* How long to wait (in milliseconds) for board to go into simple mode */ #define MAX_CONFIG_WAIT 30000 #define MAX_IOCTL_CONFIG_WAIT 1000 /*define how many times we will try a command because of bus resets */ #define MAX_CMD_RETRIES 3 /* Embedded module documentation macros - see modules.h */ MODULE_AUTHOR("Hewlett-Packard Company"); MODULE_DESCRIPTION("Driver for HP Smart Array Controller version " \ HPSA_DRIVER_VERSION); MODULE_SUPPORTED_DEVICE("HP Smart Array Controllers"); MODULE_VERSION(HPSA_DRIVER_VERSION); MODULE_LICENSE("GPL"); static int hpsa_allow_any; module_param(hpsa_allow_any, int, S_IRUGO|S_IWUSR); MODULE_PARM_DESC(hpsa_allow_any, "Allow hpsa driver to access unknown HP Smart Array hardware"); /* define the PCI info for the cards we can control */ static const struct pci_device_id hpsa_pci_device_id[] = { {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3223}, {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3234}, {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x323D}, {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3241}, {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3243}, {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3245}, {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3247}, {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3249}, {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_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0}, {0,} }; MODULE_DEVICE_TABLE(pci, hpsa_pci_device_id); /* board_id = Subsystem Device ID & Vendor ID * product = Marketing Name for the board * access = Address of the struct of function pointers */ static struct board_type products[] = { {0x3223103C, "Smart Array P800", &SA5_access}, {0x3234103C, "Smart Array P400", &SA5_access}, {0x323d103c, "Smart Array P700M", &SA5_access}, {0x3241103C, "Smart Array P212", &SA5_access}, {0x3243103C, "Smart Array P410", &SA5_access}, {0x3245103C, "Smart Array P410i", &SA5_access}, {0x3247103C, "Smart Array P411", &SA5_access}, {0x3249103C, "Smart Array P812", &SA5_access}, {0x324a103C, "Smart Array P712m", &SA5_access}, {0x324b103C, "Smart Array P711m", &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 int hpsa_ioctl(struct scsi_device *dev, int cmd, void *arg); static void start_io(struct ctlr_info *h); #ifdef CONFIG_COMPAT static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd, void *arg); #endif static void cmd_free(struct ctlr_info *h, struct CommandList *c); static void cmd_special_free(struct ctlr_info *h, struct CommandList *c); static struct CommandList *cmd_alloc(struct ctlr_info *h); static struct CommandList *cmd_special_alloc(struct ctlr_info *h); static void fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h, void *buff, size_t size, u8 page_code, unsigned char *scsi3addr, int cmd_type); static int hpsa_scsi_queue_command(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)); static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd); static int hpsa_slave_alloc(struct scsi_device *sdev); static void hpsa_slave_destroy(struct scsi_device *sdev); static ssize_t raid_level_show(struct device *dev, struct device_attribute *attr, char *buf); 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 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); static int check_for_unit_attention(struct ctlr_info *h, struct CommandList *c); static void check_ioctl_unit_attention(struct ctlr_info *h, struct CommandList *c); 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 struct device_attribute *hpsa_sdev_attrs[] = { &dev_attr_raid_level, &dev_attr_lunid, &dev_attr_unique_id, NULL, }; static struct device_attribute *hpsa_shost_attrs[] = { &dev_attr_rescan, NULL, }; static struct scsi_host_template hpsa_driver_template = { .module = THIS_MODULE, .name = "hpsa", .proc_name = "hpsa", .queuecommand = hpsa_scsi_queue_command, .can_queue = 512, .this_id = -1, .sg_tablesize = MAXSGENTRIES, .cmd_per_lun = 512, .use_clustering = ENABLE_CLUSTERING, .eh_device_reset_handler = hpsa_eh_device_reset_handler, .ioctl = hpsa_ioctl, .slave_alloc = hpsa_slave_alloc, .slave_destroy = hpsa_slave_destroy, #ifdef CONFIG_COMPAT .compat_ioctl = hpsa_compat_ioctl, #endif .sdev_attrs = hpsa_sdev_attrs, .shost_attrs = hpsa_shost_attrs, }; static inline struct ctlr_info *sdev_to_hba(struct scsi_device *sdev) { unsigned long *priv = shost_priv(sdev->host); 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_update_scsi_devices(h, host_no); 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) { if (c->err_info->SenseInfo[2] != UNIT_ATTENTION) return 0; switch (c->err_info->SenseInfo[12]) { case STATE_CHANGED: dev_warn(&h->pdev->dev, "hpsa%d: a state change " "detected, command retried\n", h->ctlr); break; case LUN_FAILED: dev_warn(&h->pdev->dev, "hpsa%d: LUN failure " "detected, action required\n", h->ctlr); break; case REPORT_LUNS_CHANGED: dev_warn(&h->pdev->dev, "hpsa%d: report LUN data " "changed\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; case POWER_OR_RESET: dev_warn(&h->pdev->dev, "hpsa%d: a power on " "or device reset detected\n", h->ctlr); break; case UNIT_ATTENTION_CLEARED: dev_warn(&h->pdev->dev, "hpsa%d: unit attention " "cleared by another initiator\n", h->ctlr); break; default: dev_warn(&h->pdev->dev, "hpsa%d: unknown " "unit attention detected\n", h->ctlr); break; } return 1; } static ssize_t host_store_rescan(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct ctlr_info *h; struct Scsi_Host *shost = class_to_shost(dev); unsigned long *priv = shost_priv(shost); h = (struct ctlr_info *) *priv; if (add_to_scan_list(h)) { wake_up_process(hpsa_scan_thread); wait_for_completion_interruptible(&h->scan_wait); } return count; } /* Enqueuing and dequeuing functions for cmdlists. */ static inline void addQ(struct hlist_head *list, struct CommandList *c) { hlist_add_head(&c->list, list); } static void enqueue_cmd_and_start_io(struct ctlr_info *h, struct CommandList *c) { unsigned long flags; spin_lock_irqsave(&h->lock, flags); addQ(&h->reqQ, c); h->Qdepth++; start_io(h); spin_unlock_irqrestore(&h->lock, flags); } static inline void removeQ(struct CommandList *c) { if (WARN_ON(hlist_unhashed(&c->list))) return; hlist_del_init(&c->list); } static inline int is_hba_lunid(unsigned char scsi3addr[]) { return memcmp(scsi3addr, RAID_CTLR_LUNID, 8) == 0; } static inline int is_logical_dev_addr_mode(unsigned char scsi3addr[]) { return (scsi3addr[3] & 0xC0) == 0x40; } static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG", "UNKNOWN" }; #define RAID_UNKNOWN (ARRAY_SIZE(raid_label) - 1) static ssize_t raid_level_show(struct device *dev, struct device_attribute *attr, char *buf) { ssize_t l = 0; unsigned char rlevel; struct ctlr_info *h; struct scsi_device *sdev; struct hpsa_scsi_dev_t *hdev; unsigned long flags; sdev = to_scsi_device(dev); h = sdev_to_hba(sdev); spin_lock_irqsave(&h->lock, flags); hdev = sdev->hostdata; if (!hdev) { spin_unlock_irqrestore(&h->lock, flags); return -ENODEV; } /* Is this even a logical drive? */ if (!is_logical_dev_addr_mode(hdev->scsi3addr)) { spin_unlock_irqrestore(&h->lock, flags); l = snprintf(buf, PAGE_SIZE, "N/A\n"); return l; } rlevel = hdev->raid_level; spin_unlock_irqrestore(&h->lock, flags); if (rlevel > RAID_UNKNOWN) rlevel = RAID_UNKNOWN; l = snprintf(buf, PAGE_SIZE, "RAID %s\n", raid_label[rlevel]); return l; } static ssize_t lunid_show(struct device *dev, struct device_attribute *attr, char *buf) { struct ctlr_info *h; struct scsi_device *sdev; struct hpsa_scsi_dev_t *hdev; unsigned long flags; unsigned char lunid[8]; sdev = to_scsi_device(dev); h = sdev_to_hba(sdev); spin_lock_irqsave(&h->lock, flags); hdev = sdev->hostdata; if (!hdev) { spin_unlock_irqrestore(&h->lock, flags); return -ENODEV; } memcpy(lunid, hdev->scsi3addr, sizeof(lunid)); spin_unlock_irqrestore(&h->lock, flags); return snprintf(buf, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n", lunid[0], lunid[1], lunid[2], lunid[3], lunid[4], lunid[5], lunid[6], lunid[7]); } static ssize_t unique_id_show(struct device *dev, struct device_attribute *attr, char *buf) { struct ctlr_info *h; struct scsi_device *sdev; struct hpsa_scsi_dev_t *hdev; unsigned long flags; unsigned char sn[16]; sdev = to_scsi_device(dev); h = sdev_to_hba(sdev); spin_lock_irqsave(&h->lock, flags); hdev = sdev->hostdata; if (!hdev) { spin_unlock_irqrestore(&h->lock, flags); return -ENODEV; } memcpy(sn, hdev->device_id, sizeof(sn)); spin_unlock_irqrestore(&h->lock, flags); return snprintf(buf, 16 * 2 + 2, "%02X%02X%02X%02X%02X%02X%02X%02X" "%02X%02X%02X%02X%02X%02X%02X%02X\n", sn[0], sn[1], sn[2], sn[3], sn[4], sn[5], sn[6], sn[7], sn[8], sn[9], sn[10], sn[11], sn[12], sn[13], sn[14], sn[15]); } static int hpsa_find_target_lun(struct ctlr_info *h, unsigned char scsi3addr[], int bus, int *target, int *lun) { /* finds an unused bus, target, lun for a new physical device * assumes h->devlock is held */ int i, found = 0; DECLARE_BITMAP(lun_taken, HPSA_MAX_SCSI_DEVS_PER_HBA); memset(&lun_taken[0], 0, HPSA_MAX_SCSI_DEVS_PER_HBA >> 3); for (i = 0; i < h->ndevices; i++) { if (h->dev[i]->bus == bus && h->dev[i]->target != -1) set_bit(h->dev[i]->target, lun_taken); } for (i = 0; i < HPSA_MAX_SCSI_DEVS_PER_HBA; i++) { if (!test_bit(i, lun_taken)) { /* *bus = 1; */ *target = i; *lun = 0; found = 1; break; } } return !found; } /* Add an entry into h->dev[] array. */ static int hpsa_scsi_add_entry(struct ctlr_info *h, int hostno, struct hpsa_scsi_dev_t *device, struct hpsa_scsi_dev_t *added[], int *nadded) { /* assumes h->devlock is held */ int n = h->ndevices; int i; unsigned char addr1[8], addr2[8]; struct hpsa_scsi_dev_t *sd; if (n >= HPSA_MAX_SCSI_DEVS_PER_HBA) { dev_err(&h->pdev->dev, "too many devices, some will be " "inaccessible.\n"); return -1; } /* physical devices do not have lun or target assigned until now. */ if (device->lun != -1) /* Logical device, lun is already assigned. */ goto lun_assigned; /* If this device a non-zero lun of a multi-lun device * byte 4 of the 8-byte LUN addr will contain the logical * unit no, zero otherise. */ if (device->scsi3addr[4] == 0) { /* This is not a non-zero lun of a multi-lun device */ if (hpsa_find_target_lun(h, device->scsi3addr, device->bus, &device->target, &device->lun) != 0) return -1; goto lun_assigned; } /* This is a non-zero lun of a multi-lun device. * Search through our list and find the device which * has the same 8 byte LUN address, excepting byte 4. * Assign the same bus and target for this new LUN. * Use the logical unit number from the firmware. */ memcpy(addr1, device->scsi3addr, 8); addr1[4] = 0; for (i = 0; i < n; i++) { sd = h->dev[i]; memcpy(addr2, sd->scsi3addr, 8); addr2[4] = 0; /* differ only in byte 4? */ if (memcmp(addr1, addr2, 8) == 0) { device->bus = sd->bus; device->target = sd->target; device->lun = device->scsi3addr[4]; break; } } if (device->lun == -1) { dev_warn(&h->pdev->dev, "physical device with no LUN=0," " suspect firmware bug or unsupported hardware " "configuration.\n"); return -1; } lun_assigned: h->dev[n] = device; h->ndevices++; added[*nadded] = device; (*nadded)++; /* initially, (before registering with scsi layer) we don't * know our hostno and we don't want to print anything first * time anyway (the scsi layer's inquiries will show that info) */ /* if (hostno != -1) */ dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d added.\n", scsi_device_type(device->devtype), hostno, device->bus, device->target, device->lun); return 0; } /* Remove an entry from h->dev[] array. */ static void hpsa_scsi_remove_entry(struct ctlr_info *h, int hostno, int entry, struct hpsa_scsi_dev_t *removed[], int *nremoved) { /* assumes h->devlock is held */ int i; struct hpsa_scsi_dev_t *sd; BUG_ON(entry < 0 || entry >= HPSA_MAX_SCSI_DEVS_PER_HBA); sd = h->dev[entry]; removed[*nremoved] = h->dev[entry]; (*nremoved)++; for (i = entry; i < h->ndevices-1; i++) h->dev[i] = h->dev[i+1]; h->ndevices--; dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d removed.\n", scsi_device_type(sd->devtype), hostno, sd->bus, sd->target, sd->lun); } #define SCSI3ADDR_EQ(a, b) ( \ (a)[7] == (b)[7] && \ (a)[6] == (b)[6] && \ (a)[5] == (b)[5] && \ (a)[4] == (b)[4] && \ (a)[3] == (b)[3] && \ (a)[2] == (b)[2] && \ (a)[1] == (b)[1] && \ (a)[0] == (b)[0]) static void fixup_botched_add(struct ctlr_info *h, struct hpsa_scsi_dev_t *added) { /* called when scsi_add_device fails in order to re-adjust * h->dev[] to match the mid layer's view. */ unsigned long flags; int i, j; spin_lock_irqsave(&h->lock, flags); for (i = 0; i < h->ndevices; i++) { if (h->dev[i] == added) { for (j = i; j < h->ndevices-1; j++) h->dev[j] = h->dev[j+1]; h->ndevices--; break; } } spin_unlock_irqrestore(&h->lock, flags); kfree(added); } static inline int device_is_the_same(struct hpsa_scsi_dev_t *dev1, struct hpsa_scsi_dev_t *dev2) { if ((is_logical_dev_addr_mode(dev1->scsi3addr) || (dev1->lun != -1 && dev2->lun != -1)) && dev1->devtype != 0x0C) return (memcmp(dev1, dev2, sizeof(*dev1)) == 0); /* we compare everything except lun and target as these * are not yet assigned. Compare parts likely * to differ first */ if (memcmp(dev1->scsi3addr, dev2->scsi3addr, sizeof(dev1->scsi3addr)) != 0) return 0; if (memcmp(dev1->device_id, dev2->device_id, sizeof(dev1->device_id)) != 0) return 0; if (memcmp(dev1->model, dev2->model, sizeof(dev1->model)) != 0) return 0; if (memcmp(dev1->vendor, dev2->vendor, sizeof(dev1->vendor)) != 0) return 0; if (memcmp(dev1->revision, dev2->revision, sizeof(dev1->revision)) != 0) return 0; if (dev1->devtype != dev2->devtype) return 0; if (dev1->raid_level != dev2->raid_level) return 0; if (dev1->bus != dev2->bus) return 0; return 1; } /* Find needle in haystack. If exact match found, return DEVICE_SAME, * and return needle location in *index. If scsi3addr matches, but not * vendor, model, serial num, etc. return DEVICE_CHANGED, and return needle * location in *index. If needle not found, return DEVICE_NOT_FOUND. */ static int hpsa_scsi_find_entry(struct hpsa_scsi_dev_t *needle, struct hpsa_scsi_dev_t *haystack[], int haystack_size, int *index) { int i; #define DEVICE_NOT_FOUND 0 #define DEVICE_CHANGED 1 #define DEVICE_SAME 2 for (i = 0; i < haystack_size; i++) { if (SCSI3ADDR_EQ(needle->scsi3addr, haystack[i]->scsi3addr)) { *index = i; if (device_is_the_same(needle, haystack[i])) return DEVICE_SAME; else return DEVICE_CHANGED; } } *index = -1; return DEVICE_NOT_FOUND; } static void adjust_hpsa_scsi_table(struct ctlr_info *h, int hostno, struct hpsa_scsi_dev_t *sd[], int nsds) { /* sd contains scsi3 addresses and devtypes, and inquiry * data. This function takes what's in sd to be the current * reality and updates h->dev[] to reflect that reality. */ int i, entry, device_change, changes = 0; struct hpsa_scsi_dev_t *csd; unsigned long flags; struct hpsa_scsi_dev_t **added, **removed; int nadded, nremoved; struct Scsi_Host *sh = NULL; added = kzalloc(sizeof(*added) * HPSA_MAX_SCSI_DEVS_PER_HBA, GFP_KERNEL); removed = kzalloc(sizeof(*removed) * HPSA_MAX_SCSI_DEVS_PER_HBA, GFP_KERNEL); if (!added || !removed) { dev_warn(&h->pdev->dev, "out of memory in " "adjust_hpsa_scsi_table\n"); goto free_and_out; } spin_lock_irqsave(&h->devlock, flags); /* find any devices in h->dev[] that are not in * sd[] and remove them from h->dev[], and for any * devices which have changed, remove the old device * info and add the new device info. */ i = 0; nremoved = 0; nadded = 0; while (i < h->ndevices) { csd = h->dev[i]; device_change = hpsa_scsi_find_entry(csd, sd, nsds, &entry); if (device_change == DEVICE_NOT_FOUND) { changes++; hpsa_scsi_remove_entry(h, hostno, i, removed, &nremoved); continue; /* remove ^^^, hence i not incremented */ } else if (device_change == DEVICE_CHANGED) { changes++; hpsa_scsi_remove_entry(h, hostno, i, removed, &nremoved); (void) hpsa_scsi_add_entry(h, hostno, sd[entry], added, &nadded); /* add can't fail, we just removed one. */ sd[entry] = NULL; /* prevent it from being freed */ } i++; } /* Now, make sure every device listed in sd[] is also * listed in h->dev[], adding them if they aren't found */ for (i = 0; i < nsds; i++) { if (!sd[i]) /* if already added above. */ continue; device_change = hpsa_scsi_find_entry(sd[i], h->dev, h->ndevices, &entry); if (device_change == DEVICE_NOT_FOUND) { changes++; if (hpsa_scsi_add_entry(h, hostno, sd[i], added, &nadded) != 0) break; sd[i] = NULL; /* prevent from being freed later. */ } else if (device_change == DEVICE_CHANGED) { /* should never happen... */ changes++; dev_warn(&h->pdev->dev, "device unexpectedly changed.\n"); /* but if it does happen, we just ignore that device */ } } spin_unlock_irqrestore(&h->devlock, flags); /* Don't notify scsi mid layer of any changes the first time through * (or if there are no changes) scsi_scan_host will do it later the * first time through. */ if (hostno == -1 || !changes) goto free_and_out; sh = h->scsi_host; /* Notify scsi mid layer of any removed devices */ for (i = 0; i < nremoved; i++) { struct scsi_device *sdev = scsi_device_lookup(sh, removed[i]->bus, removed[i]->target, removed[i]->lun); if (sdev != NULL) { scsi_remove_device(sdev); scsi_device_put(sdev); } else { /* We don't expect to get here. * future cmds to this device will get selection * timeout as if the device was gone. */ dev_warn(&h->pdev->dev, "didn't find c%db%dt%dl%d " " for removal.", hostno, removed[i]->bus, removed[i]->target, removed[i]->lun); } kfree(removed[i]); removed[i] = NULL; } /* Notify scsi mid layer of any added devices */ for (i = 0; i < nadded; i++) { if (scsi_add_device(sh, added[i]->bus, added[i]->target, added[i]->lun) == 0) continue; dev_warn(&h->pdev->dev, "scsi_add_device c%db%dt%dl%d failed, " "device not added.\n", hostno, added[i]->bus, added[i]->target, added[i]->lun); /* now we have to remove it from h->dev, * since it didn't get added to scsi mid layer */ fixup_botched_add(h, added[i]); } free_and_out: kfree(added); kfree(removed); } /* * Lookup bus/target/lun and retrun corresponding struct hpsa_scsi_dev_t * * Assume's h->devlock is held. */ static struct hpsa_scsi_dev_t *lookup_hpsa_scsi_dev(struct ctlr_info *h, int bus, int target, int lun) { int i; struct hpsa_scsi_dev_t *sd; for (i = 0; i < h->ndevices; i++) { sd = h->dev[i]; if (sd->bus == bus && sd->target == target && sd->lun == lun) return sd; } return NULL; } /* link sdev->hostdata to our per-device structure. */ static int hpsa_slave_alloc(struct scsi_device *sdev) { struct hpsa_scsi_dev_t *sd; unsigned long flags; struct ctlr_info *h; h = sdev_to_hba(sdev); spin_lock_irqsave(&h->devlock, flags); sd = lookup_hpsa_scsi_dev(h, sdev_channel(sdev), sdev_id(sdev), sdev->lun); if (sd != NULL) sdev->hostdata = sd; spin_unlock_irqrestore(&h->devlock, flags); return 0; } static void hpsa_slave_destroy(struct scsi_device *sdev) { /* nothing to do. */ } static void hpsa_scsi_setup(struct ctlr_info *h) { h->ndevices = 0; h->scsi_host = NULL; spin_lock_init(&h->devlock); } static void complete_scsi_command(struct CommandList *cp, int timeout, u32 tag) { struct scsi_cmnd *cmd; struct ctlr_info *h; struct ErrorInfo *ei; unsigned char sense_key; unsigned char asc; /* additional sense code */ unsigned char ascq; /* additional sense code qualifier */ ei = cp->err_info; cmd = (struct scsi_cmnd *) cp->scsi_cmd; h = cp->h; scsi_dma_unmap(cmd); /* undo the DMA mappings */ cmd->result = (DID_OK << 16); /* host byte */ cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */ cmd->result |= (ei->ScsiStatus << 1); /* copy the sense data whether we need to or not. */ memcpy(cmd->sense_buffer, ei->SenseInfo, ei->SenseLen > SCSI_SENSE_BUFFERSIZE ? SCSI_SENSE_BUFFERSIZE : ei->SenseLen); scsi_set_resid(cmd, ei->ResidualCnt); if (ei->CommandStatus == 0) { cmd->scsi_done(cmd); cmd_free(h, cp); return; } /* an error has occurred */ switch (ei->CommandStatus) { case CMD_TARGET_STATUS: if (ei->ScsiStatus) { /* Get sense key */ sense_key = 0xf & ei->SenseInfo[2]; /* Get additional sense code */ asc = ei->SenseInfo[12]; /* Get addition sense code qualifier */ ascq = ei->SenseInfo[13]; } if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION) { if (check_for_unit_attention(h, cp)) { cmd->result = DID_SOFT_ERROR << 16; break; } if (sense_key == ILLEGAL_REQUEST) { /* * SCSI REPORT_LUNS is commonly unsupported on * Smart Array. Suppress noisy complaint. */ if (cp->Request.CDB[0] == REPORT_LUNS) break; /* If ASC/ASCQ indicate Logical Unit * Not Supported condition, */ if ((asc == 0x25) && (ascq == 0x0)) { dev_warn(&h->pdev->dev, "cp %p " "has check condition\n", cp); break; } } if (sense_key == NOT_READY) { /* If Sense is Not Ready, Logical Unit * Not ready, Manual Intervention * required */ if ((asc == 0x04) && (ascq == 0x03)) { cmd->result = DID_NO_CONNECT << 16; dev_warn(&h->pdev->dev, "cp %p " "has check condition: unit " "not ready, manual " "intervention required\n", cp); break; } } /* Must be some other type of check condition */ dev_warn(&h->pdev->dev, "cp %p has check condition: " "unknown type: " "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, " "Returning result: 0x%x, " "cmd=[%02x %02x %02x %02x %02x " "%02x %02x %02x %02x %02x]\n", cp, sense_key, asc, ascq, cmd->result, cmd->cmnd[0], cmd->cmnd[1], cmd->cmnd[2], cmd->cmnd[3], cmd->cmnd[4], cmd->cmnd[5], cmd->cmnd[6], cmd->cmnd[7], cmd->cmnd[8], cmd->cmnd[9]); break; } /* Problem was not a check condition * Pass it up to the upper layers... */ if (ei->ScsiStatus) { dev_warn(&h->pdev->dev, "cp %p has status 0x%x " "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, " "Returning result: 0x%x\n", cp, ei->ScsiStatus, sense_key, asc, ascq, cmd->result); } else { /* scsi status is zero??? How??? */ dev_warn(&h->pdev->dev, "cp %p SCSI status was 0. " "Returning no connection.\n", cp), /* Ordinarily, this case should never happen, * but there is a bug in some released firmware * revisions that allows it to happen if, for * example, a 4100 backplane loses power and * the tape drive is in it. We assume that * it's a fatal error of some kind because we * can't show that it wasn't. We will make it * look like selection timeout since that is * the most common reason for this to occur, * and it's severe enough. */ cmd->result = DID_NO_CONNECT << 16; } break; case CMD_DATA_UNDERRUN: /* let mid layer handle it. */ break; case CMD_DATA_OVERRUN: dev_warn(&h->pdev->dev, "cp %p has" " completed with data overrun " "reported\n", cp); break; case CMD_INVALID: { /* print_bytes(cp, sizeof(*cp), 1, 0); print_cmd(cp); */ /* We get CMD_INVALID if you address a non-existent device * instead of a selection timeout (no response). You will * see this if you yank out a drive, then try to access it. * This is kind of a shame because it means that any other * CMD_INVALID (e.g. driver bug) will get interpreted as a * missing target. */ cmd->result = DID_NO_CONNECT << 16; } break; case CMD_PROTOCOL_ERR: dev_warn(&h->pdev->dev, "cp %p has " "protocol error \n", cp); break; case CMD_HARDWARE_ERR: cmd->result = DID_ERROR << 16; dev_warn(&h->pdev->dev, "cp %p had hardware error\n", cp); break; case CMD_CONNECTION_LOST: cmd->result = DID_ERROR << 16; dev_warn(&h->pdev->dev, "cp %p had connection lost\n", cp); break; case CMD_ABORTED: cmd->result = DID_ABORT << 16; dev_warn(&h->pdev->dev, "cp %p was aborted with status 0x%x\n", cp, ei->ScsiStatus); break; case CMD_ABORT_FAILED: cmd->result = DID_ERROR << 16; dev_warn(&h->pdev->dev, "cp %p reports abort failed\n", cp); break; case CMD_UNSOLICITED_ABORT: cmd->result = DID_ABORT << 16; dev_warn(&h->pdev->dev, "cp %p aborted do to an unsolicited " "abort\n", cp); break; case CMD_TIMEOUT: cmd->result = DID_TIME_OUT << 16; dev_warn(&h->pdev->dev, "cp %p timedout\n", cp); break; default: cmd->result = DID_ERROR << 16; dev_warn(&h->pdev->dev, "cp %p returned unknown status %x\n", cp, ei->CommandStatus); } cmd->scsi_done(cmd); cmd_free(h, cp); } static int hpsa_scsi_detect(struct ctlr_info *h) { struct Scsi_Host *sh; int error; sh = scsi_host_alloc(&hpsa_driver_template, sizeof(h)); if (sh == NULL) goto fail; sh->io_port = 0; sh->n_io_port = 0; sh->this_id = -1; sh->max_channel = 3; sh->max_cmd_len = MAX_COMMAND_SIZE; sh->max_lun = HPSA_MAX_LUN; sh->max_id = HPSA_MAX_LUN; h->scsi_host = sh; sh->hostdata[0] = (unsigned long) h; sh->irq = h->intr[SIMPLE_MODE_INT]; sh->unique_id = sh->irq; error = scsi_add_host(sh, &h->pdev->dev); if (error) goto fail_host_put; scsi_scan_host(sh); return 0; fail_host_put: dev_err(&h->pdev->dev, "hpsa_scsi_detect: scsi_add_host" " failed for controller %d\n", h->ctlr); scsi_host_put(sh); return error; fail: dev_err(&h->pdev->dev, "hpsa_scsi_detect: scsi_host_alloc" " failed for controller %d\n", h->ctlr); return -ENOMEM; } static void hpsa_pci_unmap(struct pci_dev *pdev, struct CommandList *c, int sg_used, int data_direction) { int i; union u64bit addr64; for (i = 0; i < sg_used; i++) { addr64.val32.lower = c->SG[i].Addr.lower; addr64.val32.upper = c->SG[i].Addr.upper; pci_unmap_single(pdev, (dma_addr_t) addr64.val, c->SG[i].Len, data_direction); } } static void hpsa_map_one(struct pci_dev *pdev, struct CommandList *cp, unsigned char *buf, size_t buflen, int data_direction) { u64 addr64; if (buflen == 0 || data_direction == PCI_DMA_NONE) { cp->Header.SGList = 0; cp->Header.SGTotal = 0; return; } addr64 = (u64) pci_map_single(pdev, buf, buflen, data_direction); cp->SG[0].Addr.lower = (u32) (addr64 & (u64) 0x00000000FFFFFFFF); cp->SG[0].Addr.upper = (u32) ((addr64 >> 32) & (u64) 0x00000000FFFFFFFF); cp->SG[0].Len = buflen; cp->Header.SGList = (u8) 1; /* no. SGs contig in this cmd */ cp->Header.SGTotal = (u16) 1; /* total sgs in this cmd list */ } static inline void hpsa_scsi_do_simple_cmd_core(struct ctlr_info *h, struct CommandList *c) { DECLARE_COMPLETION_ONSTACK(wait); c->waiting = &wait; enqueue_cmd_and_start_io(h, c); wait_for_completion(&wait); } static void hpsa_scsi_do_simple_cmd_with_retry(struct ctlr_info *h, struct CommandList *c, int data_direction) { int retry_count = 0; do { memset(c->err_info, 0, sizeof(c->err_info)); hpsa_scsi_do_simple_cmd_core(h, c); retry_count++; } while (check_for_unit_attention(h, c) && retry_count <= 3); hpsa_pci_unmap(h->pdev, c, 1, data_direction); } static void hpsa_scsi_interpret_error(struct CommandList *cp) { struct ErrorInfo *ei; struct device *d = &cp->h->pdev->dev; ei = cp->err_info; switch (ei->CommandStatus) { case CMD_TARGET_STATUS: dev_warn(d, "cmd %p has completed with errors\n", cp); dev_warn(d, "cmd %p has SCSI Status = %x\n", cp, ei->ScsiStatus); if (ei->ScsiStatus == 0) dev_warn(d, "SCSI status is abnormally zero. " "(probably indicates selection timeout " "reported incorrectly due to a known " "firmware bug, circa July, 2001.)\n"); break; case CMD_DATA_UNDERRUN: /* let mid layer handle it. */ dev_info(d, "UNDERRUN\n"); break; case CMD_DATA_OVERRUN: dev_warn(d, "cp %p has completed with data overrun\n", cp); break; case CMD_INVALID: { /* controller unfortunately reports SCSI passthru's * to non-existent targets as invalid commands. */ dev_warn(d, "cp %p is reported invalid (probably means " "target device no longer present)\n", cp); /* print_bytes((unsigned char *) cp, sizeof(*cp), 1, 0); print_cmd(cp); */ } break; case CMD_PROTOCOL_ERR: dev_warn(d, "cp %p has protocol error \n", cp); break; case CMD_HARDWARE_ERR: /* cmd->result = DID_ERROR << 16; */ dev_warn(d, "cp %p had hardware error\n", cp); break; case CMD_CONNECTION_LOST: dev_warn(d, "cp %p had connection lost\n", cp); break; case CMD_ABORTED: dev_warn(d, "cp %p was aborted\n", cp); break; case CMD_ABORT_FAILED: dev_warn(d, "cp %p reports abort failed\n", cp); break; case CMD_UNSOLICITED_ABORT: dev_warn(d, "cp %p aborted due to an unsolicited abort\n", cp); break; case CMD_TIMEOUT: dev_warn(d, "cp %p timed out\n", cp); break; default: dev_warn(d, "cp %p returned unknown status %x\n", cp, ei->CommandStatus); } } static int hpsa_scsi_do_inquiry(struct ctlr_info *h, unsigned char *scsi3addr, unsigned char page, unsigned char *buf, unsigned char bufsize) { int rc = IO_OK; struct CommandList *c; struct ErrorInfo *ei; c = cmd_special_alloc(h); if (c == NULL) { /* trouble... */ dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n"); return -ENOMEM; } fill_cmd(c, HPSA_INQUIRY, h, buf, bufsize, page, scsi3addr, TYPE_CMD); hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE); ei = c->err_info; if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) { hpsa_scsi_interpret_error(c); rc = -1; } cmd_special_free(h, c); return rc; } static int hpsa_send_reset(struct ctlr_info *h, unsigned char *scsi3addr) { int rc = IO_OK; struct CommandList *c; struct ErrorInfo *ei; c = cmd_special_alloc(h); if (c == NULL) { /* trouble... */ dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n"); return -1; } fill_cmd(c, HPSA_DEVICE_RESET_MSG, h, NULL, 0, 0, scsi3addr, TYPE_MSG); hpsa_scsi_do_simple_cmd_core(h, c); /* no unmap needed here because no data xfer. */ ei = c->err_info; if (ei->CommandStatus != 0) { hpsa_scsi_interpret_error(c); rc = -1; } cmd_special_free(h, c); return rc; } static void hpsa_get_raid_level(struct ctlr_info *h, unsigned char *scsi3addr, unsigned char *raid_level) { int rc; unsigned char *buf; *raid_level = RAID_UNKNOWN; buf = kzalloc(64, GFP_KERNEL); if (!buf) return; rc = hpsa_scsi_do_inquiry(h, scsi3addr, 0xC1, buf, 64); if (rc == 0) *raid_level = buf[8]; if (*raid_level > RAID_UNKNOWN) *raid_level = RAID_UNKNOWN; kfree(buf); return; } /* Get the device id from inquiry page 0x83 */ static int hpsa_get_device_id(struct ctlr_info *h, unsigned char *scsi3addr, unsigned char *device_id, int buflen) { int rc; unsigned char *buf; if (buflen > 16) buflen = 16; buf = kzalloc(64, GFP_KERNEL); if (!buf) return -1; rc = hpsa_scsi_do_inquiry(h, scsi3addr, 0x83, buf, 64); if (rc == 0) memcpy(device_id, &buf[8], buflen); kfree(buf); return rc != 0; } static int hpsa_scsi_do_report_luns(struct ctlr_info *h, int logical, struct ReportLUNdata *buf, int bufsize, int extended_response) { int rc = IO_OK; struct CommandList *c; unsigned char scsi3addr[8]; struct ErrorInfo *ei; c = cmd_special_alloc(h); if (c == NULL) { /* trouble... */ dev_err(&h->pdev->dev, "cmd_special_alloc returned NULL!\n"); return -1; } /* address the controller */ memset(scsi3addr, 0, sizeof(scsi3addr)); fill_cmd(c, logical ? HPSA_REPORT_LOG : HPSA_REPORT_PHYS, h, buf, bufsize, 0, scsi3addr, TYPE_CMD); if (extended_response) c->Request.CDB[1] = extended_response; hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE); ei = c->err_info; if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) { hpsa_scsi_interpret_error(c); rc = -1; } cmd_special_free(h, c); return rc; } static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info *h, struct ReportLUNdata *buf, int bufsize, int extended_response) { return hpsa_scsi_do_report_luns(h, 0, buf, bufsize, extended_response); } static inline int hpsa_scsi_do_report_log_luns(struct ctlr_info *h, struct ReportLUNdata *buf, int bufsize) { return hpsa_scsi_do_report_luns(h, 1, buf, bufsize, 0); } static inline void hpsa_set_bus_target_lun(struct hpsa_scsi_dev_t *device, int bus, int target, int lun) { device->bus = bus; device->target = target; device->lun = lun; } static int hpsa_update_device_info(struct ctlr_info *h, unsigned char scsi3addr[], struct hpsa_scsi_dev_t *this_device) { #define OBDR_TAPE_INQ_SIZE 49 unsigned char *inq_buff; inq_buff = kzalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL); if (!inq_buff) goto bail_out; /* Do an inquiry to the device to see what it is. */ if (hpsa_scsi_do_inquiry(h, scsi3addr, 0, inq_buff, (unsigned char) OBDR_TAPE_INQ_SIZE) != 0) { /* Inquiry failed (msg printed already) */ dev_err(&h->pdev->dev, "hpsa_update_device_info: inquiry failed\n"); 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], sizeof(this_device->vendor)); memcpy(this_device->model, &inq_buff[16], sizeof(this_device->model)); memcpy(this_device->revision, &inq_buff[32], sizeof(this_device->revision)); memset(this_device->device_id, 0, sizeof(this_device->device_id)); hpsa_get_device_id(h, scsi3addr, this_device->device_id, sizeof(this_device->device_id)); if (this_device->devtype == TYPE_DISK && is_logical_dev_addr_mode(scsi3addr)) hpsa_get_raid_level(h, scsi3addr, &this_device->raid_level); else this_device->raid_level = RAID_UNKNOWN; kfree(inq_buff); return 0; bail_out: kfree(inq_buff); return 1; } static unsigned char *msa2xxx_model[] = { "MSA2012", "MSA2024", "MSA2312", "MSA2324", NULL, }; static int is_msa2xxx(struct ctlr_info *h, struct hpsa_scsi_dev_t *device) { int i; for (i = 0; msa2xxx_model[i]; i++) if (strncmp(device->model, msa2xxx_model[i], strlen(msa2xxx_model[i])) == 0) return 1; return 0; } /* Helper function to assign bus, target, lun mapping of devices. * Puts non-msa2xxx logical volumes on bus 0, msa2xxx logical * volumes on bus 1, physical devices on bus 2. and the hba on bus 3. * Logical drive target and lun are assigned at this time, but * physical device lun and target assignment are deferred (assigned * in hpsa_find_target_lun, called by hpsa_scsi_add_entry.) */ static void figure_bus_target_lun(struct ctlr_info *h, u8 *lunaddrbytes, int *bus, int *target, int *lun, struct hpsa_scsi_dev_t *device) { u32 lunid; if (is_logical_dev_addr_mode(lunaddrbytes)) { /* logical device */ memcpy(&lunid, lunaddrbytes, sizeof(lunid)); lunid = le32_to_cpu(lunid); if (is_msa2xxx(h, device)) { *bus = 1; *target = (lunid >> 16) & 0x3fff; *lun = lunid & 0x00ff; } else { *bus = 0; *lun = 0; *target = lunid & 0x3fff; } } else { /* physical device */ if (is_hba_lunid(lunaddrbytes)) *bus = 3; else *bus = 2; *target = -1; *lun = -1; /* we will fill these in later. */ } } /* * If there is no lun 0 on a target, linux won't find any devices. * For the MSA2xxx boxes, we have to manually detect the enclosure * which is at lun zero, as CCISS_REPORT_PHYSICAL_LUNS doesn't report * it for some reason. *tmpdevice is the target we're adding, * this_device is a pointer into the current element of currentsd[] * that we're building up in update_scsi_devices(), below. * lunzerobits is a bitmap that tracks which targets already have a * lun 0 assigned. * Returns 1 if an enclosure was added, 0 if not. */ static int add_msa2xxx_enclosure_device(struct ctlr_info *h, struct hpsa_scsi_dev_t *tmpdevice, struct hpsa_scsi_dev_t *this_device, u8 *lunaddrbytes, int bus, int target, int lun, unsigned long lunzerobits[], int *nmsa2xxx_enclosures) { unsigned char scsi3addr[8]; if (test_bit(target, lunzerobits)) return 0; /* There is already a lun 0 on this target. */ if (!is_logical_dev_addr_mode(lunaddrbytes)) return 0; /* It's the logical targets that may lack lun 0. */ if (!is_msa2xxx(h, tmpdevice)) return 0; /* It's only the MSA2xxx that have this problem. */ if (lun == 0) /* if lun is 0, then obviously we have a lun 0. */ return 0; if (is_hba_lunid(scsi3addr)) return 0; /* Don't add the RAID controller here. */ #define MAX_MSA2XXX_ENCLOSURES 32 if (*nmsa2xxx_enclosures >= MAX_MSA2XXX_ENCLOSURES) { dev_warn(&h->pdev->dev, "Maximum number of MSA2XXX " "enclosures exceeded. Check your hardware " "configuration."); return 0; } memset(scsi3addr, 0, 8); scsi3addr[3] = target; if (hpsa_update_device_info(h, scsi3addr, this_device)) return 0; (*nmsa2xxx_enclosures)++; hpsa_set_bus_target_lun(this_device, bus, target, 0); set_bit(target, lunzerobits); return 1; } /* * Do CISS_REPORT_PHYS and CISS_REPORT_LOG. Data is returned in physdev, * logdev. The number of luns in physdev and logdev are returned in * *nphysicals and *nlogicals, respectively. * Returns 0 on success, -1 otherwise. */ static int hpsa_gather_lun_info(struct ctlr_info *h, int reportlunsize, struct ReportLUNdata *physdev, u32 *nphysicals, struct ReportLUNdata *logdev, u32 *nlogicals) { if (hpsa_scsi_do_report_phys_luns(h, physdev, reportlunsize, 0)) { dev_err(&h->pdev->dev, "report physical LUNs failed.\n"); return -1; } memcpy(nphysicals, &physdev->LUNListLength[0], sizeof(*nphysicals)); *nphysicals = be32_to_cpu(*nphysicals) / 8; #ifdef DEBUG dev_info(&h->pdev->dev, "number of physical luns is %d\n", *nphysicals); #endif if (*nphysicals > HPSA_MAX_PHYS_LUN) { dev_warn(&h->pdev->dev, "maximum physical LUNs (%d) exceeded." " %d LUNs ignored.\n", HPSA_MAX_PHYS_LUN, *nphysicals - HPSA_MAX_PHYS_LUN); *nphysicals = HPSA_MAX_PHYS_LUN; } if (hpsa_scsi_do_report_log_luns(h, logdev, reportlunsize)) { dev_err(&h->pdev->dev, "report logical LUNs failed.\n"); return -1; } memcpy(nlogicals, &logdev->LUNListLength[0], sizeof(*nlogicals)); *nlogicals = be32_to_cpu(*nlogicals) / 8; #ifdef DEBUG dev_info(&h->pdev->dev, "number of logical luns is %d\n", *nlogicals); #endif /* Reject Logicals in excess of our max capability. */ if (*nlogicals > HPSA_MAX_LUN) { dev_warn(&h->pdev->dev, "maximum logical LUNs (%d) exceeded. " "%d LUNs ignored.\n", HPSA_MAX_LUN, *nlogicals - HPSA_MAX_LUN); *nlogicals = HPSA_MAX_LUN; } if (*nlogicals + *nphysicals > HPSA_MAX_PHYS_LUN) { dev_warn(&h->pdev->dev, "maximum logical + physical LUNs (%d) exceeded. " "%d LUNs ignored.\n", HPSA_MAX_PHYS_LUN, *nphysicals + *nlogicals - HPSA_MAX_PHYS_LUN); *nlogicals = HPSA_MAX_PHYS_LUN - *nphysicals; } return 0; } static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno) { /* the idea here is we could get notified * that some devices have changed, so we do a report * physical luns and report logical luns cmd, and adjust * our list of devices accordingly. * * The scsi3addr's of devices won't change so long as the * adapter is not reset. That means we can rescan and * tell which devices we already know about, vs. new * devices, vs. disappearing devices. */ struct ReportLUNdata *physdev_list = NULL; struct ReportLUNdata *logdev_list = NULL; unsigned char *inq_buff = NULL; u32 nphysicals = 0; u32 nlogicals = 0; u32 ndev_allocated = 0; struct hpsa_scsi_dev_t **currentsd, *this_device, *tmpdevice; int ncurrent = 0; int reportlunsize = sizeof(*physdev_list) + HPSA_MAX_PHYS_LUN * 8; int i, nmsa2xxx_enclosures, ndevs_to_allocate; int bus, target, lun; DECLARE_BITMAP(lunzerobits, HPSA_MAX_TARGETS_PER_CTLR); currentsd = kzalloc(sizeof(*currentsd) * HPSA_MAX_SCSI_DEVS_PER_HBA, GFP_KERNEL); physdev_list = kzalloc(reportlunsize, GFP_KERNEL); logdev_list = kzalloc(reportlunsize, GFP_KERNEL); inq_buff = kmalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL); tmpdevice = kzalloc(sizeof(*tmpdevice), GFP_KERNEL); if (!currentsd || !physdev_list || !logdev_list || !inq_buff || !tmpdevice) { dev_err(&h->pdev->dev, "out of memory\n"); goto out; } memset(lunzerobits, 0, sizeof(lunzerobits)); if (hpsa_gather_lun_info(h, reportlunsize, physdev_list, &nphysicals, logdev_list, &nlogicals)) goto out; /* We might see up to 32 MSA2xxx enclosures, actually 8 of them * but each of them 4 times through different paths. The plus 1 * is for the RAID controller. */ ndevs_to_allocate = nphysicals + nlogicals + MAX_MSA2XXX_ENCLOSURES + 1; /* Allocate the per device structures */ for (i = 0; i < ndevs_to_allocate; i++) { currentsd[i] = kzalloc(sizeof(*currentsd[i]), GFP_KERNEL); if (!currentsd[i]) { dev_warn(&h->pdev->dev, "out of memory at %s:%d\n", __FILE__, __LINE__); goto out; } ndev_allocated++; } /* adjust our table of devices */ nmsa2xxx_enclosures = 0; for (i = 0; i < nphysicals + nlogicals + 1; i++) { u8 *lunaddrbytes; /* Figure out where the LUN ID info is coming from */ if (i < nphysicals) lunaddrbytes = &physdev_list->LUN[i][0]; else if (i < nphysicals + nlogicals) lunaddrbytes = &logdev_list->LUN[i-nphysicals][0]; else /* jam in the RAID controller at the end */ lunaddrbytes = RAID_CTLR_LUNID; /* skip masked physical devices. */ if (lunaddrbytes[3] & 0xC0 && i < nphysicals) continue; /* Get device type, vendor, model, device id */ if (hpsa_update_device_info(h, lunaddrbytes, tmpdevice)) continue; /* skip it if we can't talk to it. */ figure_bus_target_lun(h, lunaddrbytes, &bus, &target, &lun, tmpdevice); this_device = currentsd[ncurrent]; /* * For the msa2xxx boxes, we have to insert a LUN 0 which * doesn't show up in CCISS_REPORT_PHYSICAL data, but there * is nonetheless an enclosure device there. We have to * present that otherwise linux won't find anything if * there is no lun 0. */ if (add_msa2xxx_enclosure_device(h, tmpdevice, this_device, lunaddrbytes, bus, target, lun, lunzerobits, &nmsa2xxx_enclosures)) { ncurrent++; this_device = currentsd[ncurrent]; } *this_device = *tmpdevice; hpsa_set_bus_target_lun(this_device, bus, target, lun); switch (this_device->devtype) { case TYPE_ROM: { /* We don't *really* support actual CD-ROM devices, * just "One Button Disaster Recovery" tape drive * which temporarily pretends to be a CD-ROM drive. * So we check that the device is really an OBDR tape * device by checking for "$DR-10" in bytes 43-48 of * the inquiry data. */ char obdr_sig[7]; #define OBDR_TAPE_SIG "$DR-10" strncpy(obdr_sig, &inq_buff[43], 6); obdr_sig[6] = '\0'; if (strncmp(obdr_sig, OBDR_TAPE_SIG, 6) != 0) /* Not OBDR device, ignore it. */ break; } ncurrent++; break; case TYPE_DISK: if (i < nphysicals) break; ncurrent++; break; case TYPE_TAPE: case TYPE_MEDIUM_CHANGER: ncurrent++; break; case TYPE_RAID: /* Only present the Smartarray HBA as a RAID controller. * If it's a RAID controller other than the HBA itself * (an external RAID controller, MSA500 or similar) * don't present it. */ if (!is_hba_lunid(lunaddrbytes)) break; ncurrent++; break; default: break; } if (ncurrent >= HPSA_MAX_SCSI_DEVS_PER_HBA) break; } adjust_hpsa_scsi_table(h, hostno, currentsd, ncurrent); out: kfree(tmpdevice); for (i = 0; i < ndev_allocated; i++) kfree(currentsd[i]); kfree(currentsd); kfree(inq_buff); kfree(physdev_list); kfree(logdev_list); } /* hpsa_scatter_gather takes a struct scsi_cmnd, (cmd), and does the pci * dma mapping and fills in the scatter gather entries of the * hpsa command, cp. */ static int hpsa_scatter_gather(struct pci_dev *pdev, struct CommandList *cp, struct scsi_cmnd *cmd) { unsigned int len; struct scatterlist *sg; u64 addr64; int use_sg, i; BUG_ON(scsi_sg_count(cmd) > MAXSGENTRIES); use_sg = scsi_dma_map(cmd); if (use_sg < 0) return use_sg; if (!use_sg) goto sglist_finished; scsi_for_each_sg(cmd, sg, use_sg, i) { 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 */ } sglist_finished: cp->Header.SGList = (u8) use_sg; /* no. SGs contig in this cmd */ cp->Header.SGTotal = (u16) use_sg; /* total sgs in this cmd list */ return 0; } static int hpsa_scsi_queue_command(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)) { struct ctlr_info *h; struct hpsa_scsi_dev_t *dev; unsigned char scsi3addr[8]; struct CommandList *c; unsigned long flags; /* Get the ptr to our adapter structure out of cmd->host. */ h = sdev_to_hba(cmd->device); dev = cmd->device->hostdata; if (!dev) { cmd->result = DID_NO_CONNECT << 16; done(cmd); return 0; } memcpy(scsi3addr, dev->scsi3addr, sizeof(scsi3addr)); /* Need a lock as this is being allocated from the pool */ spin_lock_irqsave(&h->lock, flags); c = cmd_alloc(h); spin_unlock_irqrestore(&h->lock, flags); if (c == NULL) { /* trouble... */ dev_err(&h->pdev->dev, "cmd_alloc returned NULL!\n"); return SCSI_MLQUEUE_HOST_BUSY; } /* Fill in the command list header */ cmd->scsi_done = done; /* save this for use by completion code */ /* save c in case we have to abort it */ cmd->host_scribble = (unsigned char *) c; c->cmd_type = CMD_SCSI; c->scsi_cmd = cmd; c->Header.ReplyQueue = 0; /* unused in simple mode */ memcpy(&c->Header.LUN.LunAddrBytes[0], &scsi3addr[0], 8); c->Header.Tag.lower = c->busaddr; /* Use k. address of cmd as tag */ /* Fill in the request block... */ c->Request.Timeout = 0; memset(c->Request.CDB, 0, sizeof(c->Request.CDB)); BUG_ON(cmd->cmd_len > sizeof(c->Request.CDB)); c->Request.CDBLen = cmd->cmd_len; memcpy(c->Request.CDB, cmd->cmnd, cmd->cmd_len); c->Request.Type.Type = TYPE_CMD; c->Request.Type.Attribute = ATTR_SIMPLE; switch (cmd->sc_data_direction) { case DMA_TO_DEVICE: c->Request.Type.Direction = XFER_WRITE; break; case DMA_FROM_DEVICE: c->Request.Type.Direction = XFER_READ; break; case DMA_NONE: c->Request.Type.Direction = XFER_NONE; break; case DMA_BIDIRECTIONAL: /* This can happen if a buggy application does a scsi passthru * and sets both inlen and outlen to non-zero. ( see * ../scsi/scsi_ioctl.c:scsi_ioctl_send_command() ) */ c->Request.Type.Direction = XFER_RSVD; /* This is technically wrong, and hpsa controllers should * reject it with CMD_INVALID, which is the most correct * response, but non-fibre backends appear to let it * slide by, and give the same results as if this field * were set correctly. Either way is acceptable for * our purposes here. */ break; default: dev_err(&h->pdev->dev, "unknown data direction: %d\n", cmd->sc_data_direction); BUG(); break; } if (hpsa_scatter_gather(h->pdev, c, cmd) < 0) { /* Fill SG list */ cmd_free(h, c); return SCSI_MLQUEUE_HOST_BUSY; } enqueue_cmd_and_start_io(h, c); /* the cmd'll come back via intr handler in complete_scsi_command() */ return 0; } static void hpsa_unregister_scsi(struct ctlr_info *h) { /* we are being forcibly unloaded, and may not refuse. */ scsi_remove_host(h->scsi_host); scsi_host_put(h->scsi_host); h->scsi_host = NULL; } static int hpsa_register_scsi(struct ctlr_info *h) { int rc; hpsa_update_scsi_devices(h, -1); rc = hpsa_scsi_detect(h); if (rc != 0) dev_err(&h->pdev->dev, "hpsa_register_scsi: failed" " hpsa_scsi_detect(), rc is %d\n", rc); return rc; } static int wait_for_device_to_become_ready(struct ctlr_info *h, unsigned char lunaddr[]) { int rc = 0; int count = 0; int waittime = 1; /* seconds */ struct CommandList *c; c = cmd_special_alloc(h); if (!c) { dev_warn(&h->pdev->dev, "out of memory in " "wait_for_device_to_become_ready.\n"); return IO_ERROR; } /* Send test unit ready until device ready, or give up. */ while (count < HPSA_TUR_RETRY_LIMIT) { /* Wait for a bit. do this first, because if we send * the TUR right away, the reset will just abort it. */ msleep(1000 * waittime); count++; /* Increase wait time with each try, up to a point. */ if (waittime < HPSA_MAX_WAIT_INTERVAL_SECS) waittime = waittime * 2; /* Send the Test Unit Ready */ fill_cmd(c, TEST_UNIT_READY, h, NULL, 0, 0, lunaddr, TYPE_CMD); hpsa_scsi_do_simple_cmd_core(h, c); /* no unmap needed here because no data xfer. */ if (c->err_info->CommandStatus == CMD_SUCCESS) break; if (c->err_info->CommandStatus == CMD_TARGET_STATUS && c->err_info->ScsiStatus == SAM_STAT_CHECK_CONDITION && (c->err_info->SenseInfo[2] == NO_SENSE || c->err_info->SenseInfo[2] == UNIT_ATTENTION)) break; dev_warn(&h->pdev->dev, "waiting %d secs " "for device to become ready.\n", waittime); rc = 1; /* device not ready. */ } if (rc) dev_warn(&h->pdev->dev, "giving up on device.\n"); else dev_warn(&h->pdev->dev, "device is ready.\n"); cmd_special_free(h, c); return rc; } /* Need at least one of these error handlers to keep ../scsi/hosts.c from * complaining. Doing a host- or bus-reset can't do anything good here. */ static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd) { int rc; struct ctlr_info *h; struct hpsa_scsi_dev_t *dev; /* find the controller to which the command to be aborted was sent */ h = sdev_to_hba(scsicmd->device); if (h == NULL) /* paranoia */ return FAILED; dev_warn(&h->pdev->dev, "resetting drive\n"); dev = scsicmd->device->hostdata; if (!dev) { dev_err(&h->pdev->dev, "hpsa_eh_device_reset_handler: " "device lookup failed.\n"); return FAILED; } /* send a reset to the SCSI LUN which the command was sent to */ rc = hpsa_send_reset(h, dev->scsi3addr); if (rc == 0 && wait_for_device_to_become_ready(h, dev->scsi3addr) == 0) return SUCCESS; dev_warn(&h->pdev->dev, "resetting device failed.\n"); return FAILED; } /* * For operations that cannot sleep, a command block is allocated at init, * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track * which ones are free or in use. Lock must be held when calling this. * cmd_free() is the complement. */ static struct CommandList *cmd_alloc(struct ctlr_info *h) { struct CommandList *c; int i; union u64bit temp64; dma_addr_t cmd_dma_handle, err_dma_handle; do { i = find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds); if (i == h->nr_cmds) return NULL; } while (test_and_set_bit (i & (BITS_PER_LONG - 1), h->cmd_pool_bits + (i / BITS_PER_LONG)) != 0); c = h->cmd_pool + i; memset(c, 0, sizeof(*c)); cmd_dma_handle = h->cmd_pool_dhandle + i * sizeof(*c); c->err_info = h->errinfo_pool + i; memset(c->err_info, 0, sizeof(*c->err_info)); err_dma_handle = h->errinfo_pool_dhandle + i * sizeof(*c->err_info); h->nr_allocs++; c->cmdindex = i; INIT_HLIST_NODE(&c->list); c->busaddr = (u32) cmd_dma_handle; temp64.val = (u64) err_dma_handle; c->ErrDesc.Addr.lower = temp64.val32.lower; c->ErrDesc.Addr.upper = temp64.val32.upper; c->ErrDesc.Len = sizeof(*c->err_info); c->h = h; return c; } /* For operations that can wait for kmalloc to possibly sleep, * this routine can be called. Lock need not be held to call * cmd_special_alloc. cmd_special_free() is the complement. */ static struct CommandList *cmd_special_alloc(struct ctlr_info *h) { struct CommandList *c; union u64bit temp64; dma_addr_t cmd_dma_handle, err_dma_handle; c = pci_alloc_consistent(h->pdev, sizeof(*c), &cmd_dma_handle); if (c == NULL) return NULL; memset(c, 0, sizeof(*c)); c->cmdindex = -1; c->err_info = pci_alloc_consistent(h->pdev, sizeof(*c->err_info), &err_dma_handle); if (c->err_info == NULL) { pci_free_consistent(h->pdev, sizeof(*c), c, cmd_dma_handle); return NULL; } memset(c->err_info, 0, sizeof(*c->err_info)); INIT_HLIST_NODE(&c->list); c->busaddr = (u32) cmd_dma_handle; temp64.val = (u64) err_dma_handle; c->ErrDesc.Addr.lower = temp64.val32.lower; c->ErrDesc.Addr.upper = temp64.val32.upper; c->ErrDesc.Len = sizeof(*c->err_info); c->h = h; return c; } static void cmd_free(struct ctlr_info *h, struct CommandList *c) { int i; i = c - h->cmd_pool; clear_bit(i & (BITS_PER_LONG - 1), h->cmd_pool_bits + (i / BITS_PER_LONG)); h->nr_frees++; } static void cmd_special_free(struct ctlr_info *h, struct CommandList *c) { union u64bit temp64; temp64.val32.lower = c->ErrDesc.Addr.lower; temp64.val32.upper = c->ErrDesc.Addr.upper; pci_free_consistent(h->pdev, sizeof(*c->err_info), c->err_info, (dma_addr_t) temp64.val); pci_free_consistent(h->pdev, sizeof(*c), c, (dma_addr_t) c->busaddr); } #ifdef CONFIG_COMPAT static int do_ioctl(struct scsi_device *dev, int cmd, void *arg) { int ret; lock_kernel(); ret = hpsa_ioctl(dev, cmd, arg); unlock_kernel(); return ret; } static int hpsa_ioctl32_passthru(struct scsi_device *dev, int cmd, void *arg); static int hpsa_ioctl32_big_passthru(struct scsi_device *dev, int cmd, void *arg); static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd, void *arg) { switch (cmd) { case CCISS_GETPCIINFO: case CCISS_GETINTINFO: case CCISS_SETINTINFO: case CCISS_GETNODENAME: case CCISS_SETNODENAME: case CCISS_GETHEARTBEAT: case CCISS_GETBUSTYPES: case CCISS_GETFIRMVER: case CCISS_GETDRIVVER: case CCISS_REVALIDVOLS: case CCISS_DEREGDISK: case CCISS_REGNEWDISK: case CCISS_REGNEWD: case CCISS_RESCANDISK: case CCISS_GETLUNINFO: return do_ioctl(dev, cmd, arg); case CCISS_PASSTHRU32: return hpsa_ioctl32_passthru(dev, cmd, arg); case CCISS_BIG_PASSTHRU32: return hpsa_ioctl32_big_passthru(dev, cmd, arg); default: return -ENOIOCTLCMD; } } static int hpsa_ioctl32_passthru(struct scsi_device *dev, int cmd, void *arg) { IOCTL32_Command_struct __user *arg32 = (IOCTL32_Command_struct __user *) arg; IOCTL_Command_struct arg64; IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64)); int err; u32 cp; err = 0; err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, sizeof(arg64.LUN_info)); err |= copy_from_user(&arg64.Request, &arg32->Request, sizeof(arg64.Request)); err |= copy_from_user(&arg64.error_info, &arg32->error_info, sizeof(arg64.error_info)); err |= get_user(arg64.buf_size, &arg32->buf_size); err |= get_user(cp, &arg32->buf); arg64.buf = compat_ptr(cp); err |= copy_to_user(p, &arg64, sizeof(arg64)); if (err) return -EFAULT; err = do_ioctl(dev, CCISS_PASSTHRU, (void *)p); if (err) return err; err |= copy_in_user(&arg32->error_info, &p->error_info, sizeof(arg32->error_info)); if (err) return -EFAULT; return err; } static int hpsa_ioctl32_big_passthru(struct scsi_device *dev, int cmd, void *arg) { BIG_IOCTL32_Command_struct __user *arg32 = (BIG_IOCTL32_Command_struct __user *) arg; BIG_IOCTL_Command_struct arg64; BIG_IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64)); int err; u32 cp; err = 0; err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, sizeof(arg64.LUN_info)); err |= copy_from_user(&arg64.Request, &arg32->Request, sizeof(arg64.Request)); err |= copy_from_user(&arg64.error_info, &arg32->error_info, sizeof(arg64.error_info)); err |= get_user(arg64.buf_size, &arg32->buf_size); err |= get_user(arg64.malloc_size, &arg32->malloc_size); err |= get_user(cp, &arg32->buf); arg64.buf = compat_ptr(cp); err |= copy_to_user(p, &arg64, sizeof(arg64)); if (err) return -EFAULT; err = do_ioctl(dev, CCISS_BIG_PASSTHRU, (void *)p); if (err) return err; err |= copy_in_user(&arg32->error_info, &p->error_info, sizeof(arg32->error_info)); if (err) return -EFAULT; return err; } #endif static int hpsa_getpciinfo_ioctl(struct ctlr_info *h, void __user *argp) { struct hpsa_pci_info pciinfo; if (!argp) return -EINVAL; pciinfo.domain = pci_domain_nr(h->pdev->bus); pciinfo.bus = h->pdev->bus->number; pciinfo.dev_fn = h->pdev->devfn; pciinfo.board_id = h->board_id; if (copy_to_user(argp, &pciinfo, sizeof(pciinfo))) return -EFAULT; return 0; } static int hpsa_getdrivver_ioctl(struct ctlr_info *h, void __user *argp) { DriverVer_type DriverVer; unsigned char vmaj, vmin, vsubmin; int rc; rc = sscanf(HPSA_DRIVER_VERSION, "%hhu.%hhu.%hhu", &vmaj, &vmin, &vsubmin); if (rc != 3) { dev_info(&h->pdev->dev, "driver version string '%s' " "unrecognized.", HPSA_DRIVER_VERSION); vmaj = 0; vmin = 0; vsubmin = 0; } DriverVer = (vmaj << 16) | (vmin << 8) | vsubmin; if (!argp) return -EINVAL; if (copy_to_user(argp, &DriverVer, sizeof(DriverVer_type))) return -EFAULT; return 0; } static int hpsa_passthru_ioctl(struct ctlr_info *h, void __user *argp) { IOCTL_Command_struct iocommand; struct CommandList *c; char *buff = NULL; union u64bit temp64; if (!argp) return -EINVAL; if (!capable(CAP_SYS_RAWIO)) return -EPERM; if (copy_from_user(&iocommand, argp, sizeof(iocommand))) return -EFAULT; if ((iocommand.buf_size < 1) && (iocommand.Request.Type.Direction != XFER_NONE)) { return -EINVAL; } if (iocommand.buf_size > 0) { buff = kmalloc(iocommand.buf_size, GFP_KERNEL); if (buff == NULL) return -EFAULT; } if (iocommand.Request.Type.Direction == XFER_WRITE) { /* Copy the data into the buffer we created */ if (copy_from_user(buff, iocommand.buf, iocommand.buf_size)) { kfree(buff); return -EFAULT; } } else memset(buff, 0, iocommand.buf_size); c = cmd_special_alloc(h); if (c == NULL) { kfree(buff); return -ENOMEM; } /* Fill in the command type */ c->cmd_type = CMD_IOCTL_PEND; /* Fill in Command Header */ c->Header.ReplyQueue = 0; /* unused in simple mode */ if (iocommand.buf_size > 0) { /* buffer to fill */ c->Header.SGList = 1; c->Header.SGTotal = 1; } else { /* no buffers to fill */ c->Header.SGList = 0; c->Header.SGTotal = 0; } memcpy(&c->Header.LUN, &iocommand.LUN_info, sizeof(c->Header.LUN)); /* use the kernel address the cmd block for tag */ c->Header.Tag.lower = c->busaddr; /* Fill in Request block */ memcpy(&c->Request, &iocommand.Request, sizeof(c->Request)); /* Fill in the scatter gather information */ if (iocommand.buf_size > 0) { temp64.val = pci_map_single(h->pdev, buff, iocommand.buf_size, PCI_DMA_BIDIRECTIONAL); c->SG[0].Addr.lower = temp64.val32.lower; c->SG[0].Addr.upper = temp64.val32.upper; c->SG[0].Len = iocommand.buf_size; c->SG[0].Ext = 0; /* we are not chaining*/ } hpsa_scsi_do_simple_cmd_core(h, c); hpsa_pci_unmap(h->pdev, c, 1, PCI_DMA_BIDIRECTIONAL); check_ioctl_unit_attention(h, c); /* Copy the error information out */ memcpy(&iocommand.error_info, c->err_info, sizeof(iocommand.error_info)); if (copy_to_user(argp, &iocommand, sizeof(iocommand))) { kfree(buff); cmd_special_free(h, c); return -EFAULT; } if (iocommand.Request.Type.Direction == XFER_READ) { /* Copy the data out of the buffer we created */ if (copy_to_user(iocommand.buf, buff, iocommand.buf_size)) { kfree(buff); cmd_special_free(h, c); return -EFAULT; } } kfree(buff); cmd_special_free(h, c); return 0; } static int hpsa_big_passthru_ioctl(struct ctlr_info *h, void __user *argp) { BIG_IOCTL_Command_struct *ioc; struct CommandList *c; unsigned char **buff = NULL; int *buff_size = NULL; union u64bit temp64; BYTE sg_used = 0; int status = 0; int i; u32 left; u32 sz; BYTE __user *data_ptr; if (!argp) return -EINVAL; if (!capable(CAP_SYS_RAWIO)) return -EPERM; ioc = (BIG_IOCTL_Command_struct *) kmalloc(sizeof(*ioc), GFP_KERNEL); if (!ioc) { status = -ENOMEM; goto cleanup1; } if (copy_from_user(ioc, argp, sizeof(*ioc))) { status = -EFAULT; goto cleanup1; } if ((ioc->buf_size < 1) && (ioc->Request.Type.Direction != XFER_NONE)) { status = -EINVAL; goto cleanup1; } /* Check kmalloc limits using all SGs */ if (ioc->malloc_size > MAX_KMALLOC_SIZE) { status = -EINVAL; goto cleanup1; } if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) { status = -EINVAL; goto cleanup1; } buff = kzalloc(MAXSGENTRIES * sizeof(char *), GFP_KERNEL); if (!buff) { status = -ENOMEM; goto cleanup1; } buff_size = kmalloc(MAXSGENTRIES * sizeof(int), GFP_KERNEL); if (!buff_size) { status = -ENOMEM; goto cleanup1; } left = ioc->buf_size; data_ptr = ioc->buf; while (left) { sz = (left > ioc->malloc_size) ? ioc->malloc_size : left; buff_size[sg_used] = sz; buff[sg_used] = kmalloc(sz, GFP_KERNEL); if (buff[sg_used] == NULL) { status = -ENOMEM; goto cleanup1; } if (ioc->Request.Type.Direction == XFER_WRITE) { if (copy_from_user(buff[sg_used], data_ptr, sz)) { status = -ENOMEM; goto cleanup1; } } else memset(buff[sg_used], 0, sz); left -= sz; data_ptr += sz; sg_used++; } c = cmd_special_alloc(h); if (c == NULL) { status = -ENOMEM; goto cleanup1; } c->cmd_type = CMD_IOCTL_PEND; c->Header.ReplyQueue = 0; if (ioc->buf_size > 0) { c->Header.SGList = sg_used; c->Header.SGTotal = sg_used; } else { c->Header.SGList = 0; c->Header.SGTotal = 0; } memcpy(&c->Header.LUN, &ioc->LUN_info, sizeof(c->Header.LUN)); c->Header.Tag.lower = c->busaddr; memcpy(&c->Request, &ioc->Request, sizeof(c->Request)); if (ioc->buf_size > 0) { int i; for (i = 0; i < sg_used; i++) { temp64.val = pci_map_single(h->pdev, buff[i], buff_size[i], PCI_DMA_BIDIRECTIONAL); c->SG[i].Addr.lower = temp64.val32.lower; c->SG[i].Addr.upper = temp64.val32.upper; c->SG[i].Len = buff_size[i]; /* we are not chaining */ c->SG[i].Ext = 0; } } hpsa_scsi_do_simple_cmd_core(h, c); hpsa_pci_unmap(h->pdev, c, sg_used, PCI_DMA_BIDIRECTIONAL); check_ioctl_unit_attention(h, c); /* Copy the error information out */ memcpy(&ioc->error_info, c->err_info, sizeof(ioc->error_info)); if (copy_to_user(argp, ioc, sizeof(*ioc))) { cmd_special_free(h, c); status = -EFAULT; goto cleanup1; } if (ioc->Request.Type.Direction == XFER_READ) { /* Copy the data out of the buffer we created */ BYTE __user *ptr = ioc->buf; for (i = 0; i < sg_used; i++) { if (copy_to_user(ptr, buff[i], buff_size[i])) { cmd_special_free(h, c); status = -EFAULT; goto cleanup1; } ptr += buff_size[i]; } } cmd_special_free(h, c); status = 0; cleanup1: if (buff) { for (i = 0; i < sg_used; i++) kfree(buff[i]); kfree(buff); } kfree(buff_size); kfree(ioc); return status; } static void check_ioctl_unit_attention(struct ctlr_info *h, struct CommandList *c) { if (c->err_info->CommandStatus == CMD_TARGET_STATUS && c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) (void) check_for_unit_attention(h, c); } /* * ioctl */ static int hpsa_ioctl(struct scsi_device *dev, int cmd, void *arg) { struct ctlr_info *h; void __user *argp = (void __user *)arg; h = sdev_to_hba(dev); switch (cmd) { case CCISS_DEREGDISK: case CCISS_REGNEWDISK: case CCISS_REGNEWD: hpsa_update_scsi_devices(h, dev->host->host_no); return 0; case CCISS_GETPCIINFO: return hpsa_getpciinfo_ioctl(h, argp); case CCISS_GETDRIVVER: return hpsa_getdrivver_ioctl(h, argp); case CCISS_PASSTHRU: return hpsa_passthru_ioctl(h, argp); case CCISS_BIG_PASSTHRU: return hpsa_big_passthru_ioctl(h, argp); default: return -ENOTTY; } } static void fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h, void *buff, size_t size, u8 page_code, unsigned char *scsi3addr, int cmd_type) { int pci_dir = XFER_NONE; c->cmd_type = CMD_IOCTL_PEND; c->Header.ReplyQueue = 0; if (buff != NULL && size > 0) { c->Header.SGList = 1; c->Header.SGTotal = 1; } else { c->Header.SGList = 0; c->Header.SGTotal = 0; } c->Header.Tag.lower = c->busaddr; memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8); c->Request.Type.Type = cmd_type; if (cmd_type == TYPE_CMD) { switch (cmd) { case HPSA_INQUIRY: /* are we trying to read a vital product page */ if (page_code != 0) { c->Request.CDB[1] = 0x01; c->Request.CDB[2] = page_code; } c->Request.CDBLen = 6; c->Request.Type.Attribute = ATTR_SIMPLE; c->Request.Type.Direction = XFER_READ; c->Request.Timeout = 0; c->Request.CDB[0] = HPSA_INQUIRY; c->Request.CDB[4] = size & 0xFF; break; case HPSA_REPORT_LOG: case HPSA_REPORT_PHYS: /* Talking to controller so It's a physical command mode = 00 target = 0. Nothing to write. */ c->Request.CDBLen = 12; c->Request.Type.Attribute = ATTR_SIMPLE; c->Request.Type.Direction = XFER_READ; c->Request.Timeout = 0; c->Request.CDB[0] = cmd; c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */ c->Request.CDB[7] = (size >> 16) & 0xFF; c->Request.CDB[8] = (size >> 8) & 0xFF; c->Request.CDB[9] = size & 0xFF; break; case HPSA_READ_CAPACITY: c->Request.CDBLen = 10; c->Request.Type.Attribute = ATTR_SIMPLE; c->Request.Type.Direction = XFER_READ; c->Request.Timeout = 0; c->Request.CDB[0] = cmd; break; case HPSA_CACHE_FLUSH: c->Request.CDBLen = 12; c->Request.Type.Attribute = ATTR_SIMPLE; c->Request.Type.Direction = XFER_WRITE; c->Request.Timeout = 0; c->Request.CDB[0] = BMIC_WRITE; c->Request.CDB[6] = BMIC_CACHE_FLUSH; break; case TEST_UNIT_READY: c->Request.CDBLen = 6; c->Request.Type.Attribute = ATTR_SIMPLE; c->Request.Type.Direction = XFER_NONE; c->Request.Timeout = 0; break; default: dev_warn(&h->pdev->dev, "unknown command 0x%c\n", cmd); BUG(); return; } } else if (cmd_type == TYPE_MSG) { switch (cmd) { case HPSA_DEVICE_RESET_MSG: c->Request.CDBLen = 16; c->Request.Type.Type = 1; /* It is a MSG not a CMD */ c->Request.Type.Attribute = ATTR_SIMPLE; c->Request.Type.Direction = XFER_NONE; c->Request.Timeout = 0; /* Don't time out */ c->Request.CDB[0] = 0x01; /* RESET_MSG is 0x01 */ c->Request.CDB[1] = 0x03; /* Reset target above */ /* If bytes 4-7 are zero, it means reset the */ /* LunID device */ c->Request.CDB[4] = 0x00; c->Request.CDB[5] = 0x00; c->Request.CDB[6] = 0x00; c->Request.CDB[7] = 0x00; break; default: dev_warn(&h->pdev->dev, "unknown message type %d\n", cmd); BUG(); } } else { dev_warn(&h->pdev->dev, "unknown command type %d\n", cmd_type); BUG(); } switch (c->Request.Type.Direction) { case XFER_READ: pci_dir = PCI_DMA_FROMDEVICE; break; case XFER_WRITE: pci_dir = PCI_DMA_TODEVICE; break; case XFER_NONE: pci_dir = PCI_DMA_NONE; break; default: pci_dir = PCI_DMA_BIDIRECTIONAL; } hpsa_map_one(h->pdev, c, buff, size, pci_dir); return; } /* * Map (physical) PCI mem into (virtual) kernel space */ static void __iomem *remap_pci_mem(ulong base, ulong size) { ulong page_base = ((ulong) base) & PAGE_MASK; ulong page_offs = ((ulong) base) - page_base; void __iomem *page_remapped = ioremap(page_base, page_offs + size); return page_remapped ? (page_remapped + page_offs) : NULL; } /* Takes cmds off the submission queue and sends them to the hardware, * then puts them on the queue of cmds waiting for completion. */ static void start_io(struct ctlr_info *h) { struct CommandList *c; while (!hlist_empty(&h->reqQ)) { c = hlist_entry(h->reqQ.first, struct CommandList, list); /* can't do anything if fifo is full */ if ((h->access.fifo_full(h))) { dev_warn(&h->pdev->dev, "fifo full\n"); break; } /* Get the first entry from the Request Q */ removeQ(c); h->Qdepth--; /* Tell the controller execute command */ h->access.submit_command(h, c); /* Put job onto the completed Q */ addQ(&h->cmpQ, c); } } static inline unsigned long get_next_completion(struct ctlr_info *h) { return h->access.command_completed(h); } static inline int interrupt_pending(struct ctlr_info *h) { return h->access.intr_pending(h); } static inline long interrupt_not_for_us(struct ctlr_info *h) { return ((h->access.intr_pending(h) == 0) || (h->interrupts_enabled == 0)); } static inline int bad_tag(struct ctlr_info *h, u32 tag_index, u32 raw_tag) { if (unlikely(tag_index >= h->nr_cmds)) { dev_warn(&h->pdev->dev, "bad tag 0x%08x ignored.\n", raw_tag); return 1; } return 0; } static inline void finish_cmd(struct CommandList *c, u32 raw_tag) { removeQ(c); if (likely(c->cmd_type == CMD_SCSI)) complete_scsi_command(c, 0, raw_tag); else if (c->cmd_type == CMD_IOCTL_PEND) complete(c->waiting); } static irqreturn_t do_hpsa_intr(int irq, void *dev_id) { struct ctlr_info *h = dev_id; struct CommandList *c; unsigned long flags; u32 raw_tag, tag, tag_index; struct hlist_node *tmp; if (interrupt_not_for_us(h)) return IRQ_NONE; spin_lock_irqsave(&h->lock, flags); while (interrupt_pending(h)) { while ((raw_tag = get_next_completion(h)) != FIFO_EMPTY) { if (likely(HPSA_TAG_CONTAINS_INDEX(raw_tag))) { tag_index = HPSA_TAG_TO_INDEX(raw_tag); if (bad_tag(h, tag_index, raw_tag)) return IRQ_HANDLED; c = h->cmd_pool + tag_index; finish_cmd(c, raw_tag); continue; } tag = HPSA_TAG_DISCARD_ERROR_BITS(raw_tag); c = NULL; hlist_for_each_entry(c, tmp, &h->cmpQ, list) { if (c->busaddr == tag) { finish_cmd(c, raw_tag); break; } } } } spin_unlock_irqrestore(&h->lock, flags); return IRQ_HANDLED; } /* Send a message CDB to the firmware. */ static __devinit int hpsa_message(struct pci_dev *pdev, unsigned char opcode, unsigned char type) { struct Command { struct CommandListHeader CommandHeader; struct RequestBlock Request; struct ErrDescriptor ErrorDescriptor; }; struct Command *cmd; static const size_t cmd_sz = sizeof(*cmd) + sizeof(cmd->ErrorDescriptor); dma_addr_t paddr64; uint32_t paddr32, tag; void __iomem *vaddr; int i, err; vaddr = pci_ioremap_bar(pdev, 0); if (vaddr == NULL) return -ENOMEM; /* The Inbound Post Queue only accepts 32-bit physical addresses for the * CCISS commands, so they must be allocated from the lower 4GiB of * memory. */ err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); if (err) { iounmap(vaddr); return -ENOMEM; } cmd = pci_alloc_consistent(pdev, cmd_sz, &paddr64); if (cmd == NULL) { iounmap(vaddr); return -ENOMEM; } /* This must fit, because of the 32-bit consistent DMA mask. Also, * although there's no guarantee, we assume that the address is at * least 4-byte aligned (most likely, it's page-aligned). */ paddr32 = paddr64; cmd->CommandHeader.ReplyQueue = 0; cmd->CommandHeader.SGList = 0; cmd->CommandHeader.SGTotal = 0; cmd->CommandHeader.Tag.lower = paddr32; cmd->CommandHeader.Tag.upper = 0; memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8); cmd->Request.CDBLen = 16; cmd->Request.Type.Type = TYPE_MSG; cmd->Request.Type.Attribute = ATTR_HEADOFQUEUE; cmd->Request.Type.Direction = XFER_NONE; cmd->Request.Timeout = 0; /* Don't time out */ cmd->Request.CDB[0] = opcode; cmd->Request.CDB[1] = type; memset(&cmd->Request.CDB[2], 0, 14); /* rest of the CDB is reserved */ cmd->ErrorDescriptor.Addr.lower = paddr32 + sizeof(*cmd); cmd->ErrorDescriptor.Addr.upper = 0; cmd->ErrorDescriptor.Len = sizeof(struct ErrorInfo); writel(paddr32, vaddr + SA5_REQUEST_PORT_OFFSET); for (i = 0; i < HPSA_MSG_SEND_RETRY_LIMIT; i++) { tag = readl(vaddr + SA5_REPLY_PORT_OFFSET); if (HPSA_TAG_DISCARD_ERROR_BITS(tag) == paddr32) break; msleep(HPSA_MSG_SEND_RETRY_INTERVAL_MSECS); } iounmap(vaddr); /* we leak the DMA buffer here ... no choice since the controller could * still complete the command. */ if (i == HPSA_MSG_SEND_RETRY_LIMIT) { dev_err(&pdev->dev, "controller message %02x:%02x timed out\n", opcode, type); return -ETIMEDOUT; } pci_free_consistent(pdev, cmd_sz, cmd, paddr64); if (tag & HPSA_ERROR_BIT) { dev_err(&pdev->dev, "controller message %02x:%02x failed\n", opcode, type); return -EIO; } dev_info(&pdev->dev, "controller message %02x:%02x succeeded\n", opcode, type); return 0; } #define hpsa_soft_reset_controller(p) hpsa_message(p, 1, 0) #define hpsa_noop(p) hpsa_message(p, 3, 0) static __devinit int hpsa_reset_msi(struct pci_dev *pdev) { /* the #defines are stolen from drivers/pci/msi.h. */ #define msi_control_reg(base) (base + PCI_MSI_FLAGS) #define PCI_MSIX_FLAGS_ENABLE (1 << 15) int pos; u16 control = 0; pos = pci_find_capability(pdev, PCI_CAP_ID_MSI); if (pos) { pci_read_config_word(pdev, msi_control_reg(pos), &control); if (control & PCI_MSI_FLAGS_ENABLE) { dev_info(&pdev->dev, "resetting MSI\n"); pci_write_config_word(pdev, msi_control_reg(pos), control & ~PCI_MSI_FLAGS_ENABLE); } } pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX); if (pos) { pci_read_config_word(pdev, msi_control_reg(pos), &control); if (control & PCI_MSIX_FLAGS_ENABLE) { dev_info(&pdev->dev, "resetting MSI-X\n"); pci_write_config_word(pdev, msi_control_reg(pos), control & ~PCI_MSIX_FLAGS_ENABLE); } } 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) { u16 pmcsr, saved_config_space[32]; int i, pos; dev_info(&pdev->dev, "using PCI PM to reset controller\n"); /* This is very nearly the same thing as * * pci_save_state(pci_dev); * pci_set_power_state(pci_dev, PCI_D3hot); * pci_set_power_state(pci_dev, PCI_D0); * pci_restore_state(pci_dev); * * but we can't use these nice canned kernel routines on * kexec, because they also check the MSI/MSI-X state in PCI * configuration space and do the wrong thing when it is * set/cleared. Also, the pci_save/restore_state functions * violate the ordering requirements for restoring the * configuration space from the CCISS document (see the * comment below). So we roll our own .... */ 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." */ /* 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); 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); /* Restore the PCI configuration space. The Open CISS * Specification says, "Restore the PCI Configuration * Registers, offsets 00h through 60h. It is important to * restore the command register, 16-bits at offset 04h, * last. Do not restore the configuration status register, * 16-bits at offset 06h." Note that the offset is 2*i. */ for (i = 0; i < 32; i++) { if (i == 2 || i == 3) continue; pci_write_config_word(pdev, 2*i, saved_config_space[i]); } wmb(); pci_write_config_word(pdev, 4, saved_config_space[2]); return 0; } /* * We cannot read the structure directly, for portability we must use * the io functions. * This is for debug only. */ #ifdef HPSA_DEBUG static void print_cfg_table(struct device *dev, struct CfgTable *tb) { int i; char temp_name[17]; dev_info(dev, "Controller Configuration information\n"); dev_info(dev, "------------------------------------\n"); for (i = 0; i < 4; i++) temp_name[i] = readb(&(tb->Signature[i])); temp_name[4] = '\0'; dev_info(dev, " Signature = %s\n", temp_name); dev_info(dev, " Spec Number = %d\n", readl(&(tb->SpecValence))); dev_info(dev, " Transport methods supported = 0x%x\n", readl(&(tb->TransportSupport))); dev_info(dev, " Transport methods active = 0x%x\n", readl(&(tb->TransportActive))); dev_info(dev, " Requested transport Method = 0x%x\n", readl(&(tb->HostWrite.TransportRequest))); dev_info(dev, " Coalesce Interrupt Delay = 0x%x\n", readl(&(tb->HostWrite.CoalIntDelay))); dev_info(dev, " Coalesce Interrupt Count = 0x%x\n", readl(&(tb->HostWrite.CoalIntCount))); dev_info(dev, " Max outstanding commands = 0x%d\n", readl(&(tb->CmdsOutMax))); dev_info(dev, " Bus Types = 0x%x\n", readl(&(tb->BusTypes))); for (i = 0; i < 16; i++) temp_name[i] = readb(&(tb->ServerName[i])); temp_name[16] = '\0'; 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) { int i, offset, mem_type, bar_type; if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */ return 0; offset = 0; for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE; if (bar_type == PCI_BASE_ADDRESS_SPACE_IO) offset += 4; else { mem_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_MEM_TYPE_MASK; switch (mem_type) { case PCI_BASE_ADDRESS_MEM_TYPE_32: case PCI_BASE_ADDRESS_MEM_TYPE_1M: offset += 4; /* 32 bit */ break; case PCI_BASE_ADDRESS_MEM_TYPE_64: offset += 8; break; default: /* reserved in PCI 2.2 */ dev_warn(&pdev->dev, "base address is invalid\n"); return -1; break; } } if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0) return i + 1; } return -1; } /* If MSI/MSI-X is supported by the kernel we will try to enable it on * 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) { #ifdef CONFIG_PCI_MSI int err; struct msix_entry hpsa_msix_entries[4] = { {0, 0}, {0, 1}, {0, 2}, {0, 3} }; /* Some boards advertise MSI but don't really support it */ if ((board_id == 0x40700E11) || (board_id == 0x40800E11) || (board_id == 0x40820E11) || (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 (!err) { h->intr[0] = hpsa_msix_entries[0].vector; h->intr[1] = hpsa_msix_entries[1].vector; h->intr[2] = hpsa_msix_entries[2].vector; h->intr[3] = hpsa_msix_entries[3].vector; h->msix_vector = 1; return; } if (err > 0) { dev_warn(&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", 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)) h->msi_vector = 1; else dev_warn(&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[SIMPLE_MODE_INT] = pdev->irq; } static int hpsa_pci_init(struct ctlr_info *h, struct pci_dev *pdev) { 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; int i, prod_index, err; subsystem_vendor_id = pdev->subsystem_vendor; subsystem_device_id = pdev->subsystem_device; board_id = (((u32) (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); 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; } err = pci_request_regions(pdev, "hpsa"); if (err) { dev_err(&pdev->dev, "cannot obtain PCI resources, aborting\n"); return err; } /* 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); /* 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; } h->paddr = pci_resource_start(pdev, i); /* addressing mode bits * already removed */ h->vaddr = remap_pci_mem(h->paddr, 0x250); /* 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; 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; } /* 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) { dev_warn(&pdev->dev, "cannot find cfg_base_addr_index\n"); err = -ENODEV; goto err_out_free_res; } 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)); h->board_id = board_id; /* Query controller for max supported commands: */ h->max_commands = readl(&(h->cfgtable->CmdsOutMax)); 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; 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; } #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)); } #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); } 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); /* 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 (i = 0; i < MAX_CONFIG_WAIT; i++) { if (!(readl(h->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq)) break; /* delay and try again */ msleep(10); } #ifdef HPSA_DEBUG print_cfg_table(&pdev->dev, h->cfgtable); #endif /* HPSA_DEBUG */ if (!(readl(&(h->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) { dev_warn(&pdev->dev, "unable to get board into simple mode\n"); err = -ENODEV; goto err_out_free_res; } return 0; err_out_free_res: /* * Deliberately omit pci_disable_device(): it does something nasty to * Smart Array controllers that pci_enable_device does not undo */ pci_release_regions(pdev); return err; } static int __devinit hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) { int i, rc; int dac; 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" : "")); } } BUILD_BUG_ON(sizeof(struct CommandList) % 8); h = kzalloc(sizeof(*h), GFP_KERNEL); if (!h) return -ENOMEM; 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; 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)); if (rc == 0) { dac = 1; } else { rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); if (rc == 0) { dac = 0; } else { dev_err(&pdev->dev, "no suitable DMA available\n"); goto clean1; } } /* make sure the board interrupts are off */ h->access.set_intr_mask(h, HPSA_INTR_OFF); rc = request_irq(h->intr[SIMPLE_MODE_INT], do_hpsa_intr, IRQF_DISABLED | IRQF_SHARED, h->devname, h); if (rc) { dev_err(&pdev->dev, "unable to get irq %d for %s\n", h->intr[SIMPLE_MODE_INT], h->devname); goto clean2; } dev_info(&pdev->dev, "%s: <0x%x> at PCI %s IRQ %d%s using DAC\n", h->devname, pdev->device, pci_name(pdev), h->intr[SIMPLE_MODE_INT], dac ? "" : " not"); h->cmd_pool_bits = kmalloc(((h->nr_cmds + BITS_PER_LONG - 1) / BITS_PER_LONG) * sizeof(unsigned long), GFP_KERNEL); h->cmd_pool = pci_alloc_consistent(h->pdev, h->nr_cmds * sizeof(*h->cmd_pool), &(h->cmd_pool_dhandle)); h->errinfo_pool = pci_alloc_consistent(h->pdev, h->nr_cmds * sizeof(*h->errinfo_pool), &(h->errinfo_pool_dhandle)); if ((h->cmd_pool_bits == NULL) || (h->cmd_pool == NULL) || (h->errinfo_pool == NULL)) { dev_err(&pdev->dev, "out of memory"); rc = -ENOMEM; goto clean4; } spin_lock_init(&h->lock); pci_set_drvdata(pdev, h); memset(h->cmd_pool_bits, 0, ((h->nr_cmds + BITS_PER_LONG - 1) / BITS_PER_LONG) * sizeof(unsigned long)); hpsa_scsi_setup(h); /* Turn the interrupts on so we can service requests */ h->access.set_intr_mask(h, HPSA_INTR_ON); hpsa_register_scsi(h); /* hook ourselves into SCSI subsystem */ h->busy_initializing = 0; return 1; clean4: kfree(h->cmd_pool_bits); if (h->cmd_pool) pci_free_consistent(h->pdev, h->nr_cmds * sizeof(struct CommandList), h->cmd_pool, h->cmd_pool_dhandle); if (h->errinfo_pool) pci_free_consistent(h->pdev, h->nr_cmds * sizeof(struct ErrorInfo), h->errinfo_pool, h->errinfo_pool_dhandle); free_irq(h->intr[SIMPLE_MODE_INT], h); clean2: clean1: h->busy_initializing = 0; kfree(h); return rc; } static void hpsa_flush_cache(struct ctlr_info *h) { char *flush_buf; struct CommandList *c; flush_buf = kzalloc(4, GFP_KERNEL); if (!flush_buf) return; c = cmd_special_alloc(h); if (!c) { dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n"); goto out_of_memory; } fill_cmd(c, HPSA_CACHE_FLUSH, h, flush_buf, 4, 0, RAID_CTLR_LUNID, TYPE_CMD); hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_TODEVICE); if (c->err_info->CommandStatus != 0) dev_warn(&h->pdev->dev, "error flushing cache on controller\n"); cmd_special_free(h, c); out_of_memory: kfree(flush_buf); } static void hpsa_shutdown(struct pci_dev *pdev) { struct ctlr_info *h; h = pci_get_drvdata(pdev); /* Turn board interrupts off and send the flush cache command * sendcmd will turn off interrupt, and send the flush... * To write all data in the battery backed cache to disks */ hpsa_flush_cache(h); h->access.set_intr_mask(h, HPSA_INTR_OFF); free_irq(h->intr[2], h); #ifdef CONFIG_PCI_MSI if (h->msix_vector) pci_disable_msix(h->pdev); else if (h->msi_vector) pci_disable_msi(h->pdev); #endif /* CONFIG_PCI_MSI */ } static void __devexit hpsa_remove_one(struct pci_dev *pdev) { struct ctlr_info *h; if (pci_get_drvdata(pdev) == NULL) { dev_err(&pdev->dev, "unable to remove device \n"); 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); pci_free_consistent(h->pdev, h->nr_cmds * sizeof(struct CommandList), h->cmd_pool, h->cmd_pool_dhandle); pci_free_consistent(h->pdev, h->nr_cmds * sizeof(struct ErrorInfo), h->errinfo_pool, h->errinfo_pool_dhandle); kfree(h->cmd_pool_bits); /* * 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_set_drvdata(pdev, NULL); mutex_unlock(&h->busy_shutting_down); kfree(h); } static int hpsa_suspend(__attribute__((unused)) struct pci_dev *pdev, __attribute__((unused)) pm_message_t state) { return -ENOSYS; } static int hpsa_resume(__attribute__((unused)) struct pci_dev *pdev) { return -ENOSYS; } static struct pci_driver hpsa_pci_driver = { .name = "hpsa", .probe = hpsa_init_one, .remove = __devexit_p(hpsa_remove_one), .id_table = hpsa_pci_device_id, /* id_table */ .shutdown = hpsa_shutdown, .suspend = hpsa_suspend, .resume = hpsa_resume, }; /* * This is it. Register the PCI driver information for the cards we control * the OS will call our registered routines when it finds one of our cards. */ 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; } static void __exit hpsa_cleanup(void) { pci_unregister_driver(&hpsa_pci_driver); kthread_stop(hpsa_scan_thread); } module_init(hpsa_init); module_exit(hpsa_cleanup);