| /* |
| * linux/drivers/scsi/esas2r/esas2r_main.c |
| * For use with ATTO ExpressSAS R6xx SAS/SATA RAID controllers |
| * |
| * Copyright (c) 2001-2013 ATTO Technology, Inc. |
| * (mailto:linuxdrivers@attotech.com) |
| * |
| * 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; either version 2 |
| * of the License, or (at your option) any later version. |
| * |
| * 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. See the |
| * GNU General Public License for more details. |
| * |
| * NO WARRANTY |
| * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR |
| * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT |
| * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, |
| * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is |
| * solely responsible for determining the appropriateness of using and |
| * distributing the Program and assumes all risks associated with its |
| * exercise of rights under this Agreement, including but not limited to |
| * the risks and costs of program errors, damage to or loss of data, |
| * programs or equipment, and unavailability or interruption of operations. |
| * |
| * DISCLAIMER OF LIABILITY |
| * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY |
| * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR |
| * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE |
| * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED |
| * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES |
| * |
| * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, |
| * USA. |
| */ |
| |
| #include "esas2r.h" |
| |
| MODULE_DESCRIPTION(ESAS2R_DRVR_NAME ": " ESAS2R_LONGNAME " driver"); |
| MODULE_AUTHOR("ATTO Technology, Inc."); |
| MODULE_LICENSE("GPL"); |
| MODULE_VERSION(ESAS2R_VERSION_STR); |
| |
| /* global definitions */ |
| |
| static int found_adapters; |
| struct esas2r_adapter *esas2r_adapters[MAX_ADAPTERS]; |
| |
| #define ESAS2R_VDA_EVENT_PORT1 54414 |
| #define ESAS2R_VDA_EVENT_PORT2 54415 |
| #define ESAS2R_VDA_EVENT_SOCK_COUNT 2 |
| |
| static struct esas2r_adapter *esas2r_adapter_from_kobj(struct kobject *kobj) |
| { |
| struct device *dev = container_of(kobj, struct device, kobj); |
| struct Scsi_Host *host = class_to_shost(dev); |
| |
| return (struct esas2r_adapter *)host->hostdata; |
| } |
| |
| static ssize_t read_fw(struct file *file, struct kobject *kobj, |
| struct bin_attribute *attr, |
| char *buf, loff_t off, size_t count) |
| { |
| struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); |
| |
| return esas2r_read_fw(a, buf, off, count); |
| } |
| |
| static ssize_t write_fw(struct file *file, struct kobject *kobj, |
| struct bin_attribute *attr, |
| char *buf, loff_t off, size_t count) |
| { |
| struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); |
| |
| return esas2r_write_fw(a, buf, off, count); |
| } |
| |
| static ssize_t read_fs(struct file *file, struct kobject *kobj, |
| struct bin_attribute *attr, |
| char *buf, loff_t off, size_t count) |
| { |
| struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); |
| |
| return esas2r_read_fs(a, buf, off, count); |
| } |
| |
| static ssize_t write_fs(struct file *file, struct kobject *kobj, |
| struct bin_attribute *attr, |
| char *buf, loff_t off, size_t count) |
| { |
| struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); |
| int length = min(sizeof(struct esas2r_ioctl_fs), count); |
| int result = 0; |
| |
| result = esas2r_write_fs(a, buf, off, count); |
| |
| if (result < 0) |
| result = 0; |
| |
| return length; |
| } |
| |
| static ssize_t read_vda(struct file *file, struct kobject *kobj, |
| struct bin_attribute *attr, |
| char *buf, loff_t off, size_t count) |
| { |
| struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); |
| |
| return esas2r_read_vda(a, buf, off, count); |
| } |
| |
| static ssize_t write_vda(struct file *file, struct kobject *kobj, |
| struct bin_attribute *attr, |
| char *buf, loff_t off, size_t count) |
| { |
| struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); |
| |
| return esas2r_write_vda(a, buf, off, count); |
| } |
| |
| static ssize_t read_live_nvram(struct file *file, struct kobject *kobj, |
| struct bin_attribute *attr, |
| char *buf, loff_t off, size_t count) |
| { |
| struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); |
| int length = min_t(size_t, sizeof(struct esas2r_sas_nvram), PAGE_SIZE); |
| |
| memcpy(buf, a->nvram, length); |
| return length; |
| } |
| |
| static ssize_t write_live_nvram(struct file *file, struct kobject *kobj, |
| struct bin_attribute *attr, |
| char *buf, loff_t off, size_t count) |
| { |
| struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); |
| struct esas2r_request *rq; |
| int result = -EFAULT; |
| |
| rq = esas2r_alloc_request(a); |
| if (rq == NULL) |
| return -ENOMEM; |
| |
| if (esas2r_write_params(a, rq, (struct esas2r_sas_nvram *)buf)) |
| result = count; |
| |
| esas2r_free_request(a, rq); |
| |
| return result; |
| } |
| |
| static ssize_t read_default_nvram(struct file *file, struct kobject *kobj, |
| struct bin_attribute *attr, |
| char *buf, loff_t off, size_t count) |
| { |
| struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); |
| |
| esas2r_nvram_get_defaults(a, (struct esas2r_sas_nvram *)buf); |
| |
| return sizeof(struct esas2r_sas_nvram); |
| } |
| |
| static ssize_t read_hw(struct file *file, struct kobject *kobj, |
| struct bin_attribute *attr, |
| char *buf, loff_t off, size_t count) |
| { |
| struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); |
| int length = min_t(size_t, sizeof(struct atto_ioctl), PAGE_SIZE); |
| |
| if (!a->local_atto_ioctl) |
| return -ENOMEM; |
| |
| if (handle_hba_ioctl(a, a->local_atto_ioctl) != IOCTL_SUCCESS) |
| return -ENOMEM; |
| |
| memcpy(buf, a->local_atto_ioctl, length); |
| |
| return length; |
| } |
| |
| static ssize_t write_hw(struct file *file, struct kobject *kobj, |
| struct bin_attribute *attr, |
| char *buf, loff_t off, size_t count) |
| { |
| struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); |
| int length = min(sizeof(struct atto_ioctl), count); |
| |
| if (!a->local_atto_ioctl) { |
| a->local_atto_ioctl = kzalloc(sizeof(struct atto_ioctl), |
| GFP_KERNEL); |
| if (a->local_atto_ioctl == NULL) { |
| esas2r_log(ESAS2R_LOG_WARN, |
| "write_hw kzalloc failed for %d bytes", |
| sizeof(struct atto_ioctl)); |
| return -ENOMEM; |
| } |
| } |
| |
| memset(a->local_atto_ioctl, 0, sizeof(struct atto_ioctl)); |
| memcpy(a->local_atto_ioctl, buf, length); |
| |
| return length; |
| } |
| |
| #define ESAS2R_RW_BIN_ATTR(_name) \ |
| struct bin_attribute bin_attr_ ## _name = { \ |
| .attr = \ |
| { .name = __stringify(_name), .mode = S_IRUSR | S_IWUSR }, \ |
| .size = 0, \ |
| .read = read_ ## _name, \ |
| .write = write_ ## _name } |
| |
| ESAS2R_RW_BIN_ATTR(fw); |
| ESAS2R_RW_BIN_ATTR(fs); |
| ESAS2R_RW_BIN_ATTR(vda); |
| ESAS2R_RW_BIN_ATTR(hw); |
| ESAS2R_RW_BIN_ATTR(live_nvram); |
| |
| struct bin_attribute bin_attr_default_nvram = { |
| .attr = { .name = "default_nvram", .mode = S_IRUGO }, |
| .size = 0, |
| .read = read_default_nvram, |
| .write = NULL |
| }; |
| |
| static struct scsi_host_template driver_template = { |
| .module = THIS_MODULE, |
| .show_info = esas2r_show_info, |
| .name = ESAS2R_LONGNAME, |
| .release = esas2r_release, |
| .info = esas2r_info, |
| .ioctl = esas2r_ioctl, |
| .queuecommand = esas2r_queuecommand, |
| .eh_abort_handler = esas2r_eh_abort, |
| .eh_device_reset_handler = esas2r_device_reset, |
| .eh_bus_reset_handler = esas2r_bus_reset, |
| .eh_host_reset_handler = esas2r_host_reset, |
| .eh_target_reset_handler = esas2r_target_reset, |
| .can_queue = 128, |
| .this_id = -1, |
| .sg_tablesize = SCSI_MAX_SG_SEGMENTS, |
| .cmd_per_lun = |
| ESAS2R_DEFAULT_CMD_PER_LUN, |
| .present = 0, |
| .unchecked_isa_dma = 0, |
| .use_clustering = ENABLE_CLUSTERING, |
| .emulated = 0, |
| .proc_name = ESAS2R_DRVR_NAME, |
| .change_queue_depth = scsi_change_queue_depth, |
| .max_sectors = 0xFFFF, |
| .use_blk_tags = 1, |
| }; |
| |
| int sgl_page_size = 512; |
| module_param(sgl_page_size, int, 0); |
| MODULE_PARM_DESC(sgl_page_size, |
| "Scatter/gather list (SGL) page size in number of S/G " |
| "entries. If your application is doing a lot of very large " |
| "transfers, you may want to increase the SGL page size. " |
| "Default 512."); |
| |
| int num_sg_lists = 1024; |
| module_param(num_sg_lists, int, 0); |
| MODULE_PARM_DESC(num_sg_lists, |
| "Number of scatter/gather lists. Default 1024."); |
| |
| int sg_tablesize = SCSI_MAX_SG_SEGMENTS; |
| module_param(sg_tablesize, int, 0); |
| MODULE_PARM_DESC(sg_tablesize, |
| "Maximum number of entries in a scatter/gather table."); |
| |
| int num_requests = 256; |
| module_param(num_requests, int, 0); |
| MODULE_PARM_DESC(num_requests, |
| "Number of requests. Default 256."); |
| |
| int num_ae_requests = 4; |
| module_param(num_ae_requests, int, 0); |
| MODULE_PARM_DESC(num_ae_requests, |
| "Number of VDA asynchromous event requests. Default 4."); |
| |
| int cmd_per_lun = ESAS2R_DEFAULT_CMD_PER_LUN; |
| module_param(cmd_per_lun, int, 0); |
| MODULE_PARM_DESC(cmd_per_lun, |
| "Maximum number of commands per LUN. Default " |
| DEFINED_NUM_TO_STR(ESAS2R_DEFAULT_CMD_PER_LUN) "."); |
| |
| int can_queue = 128; |
| module_param(can_queue, int, 0); |
| MODULE_PARM_DESC(can_queue, |
| "Maximum number of commands per adapter. Default 128."); |
| |
| int esas2r_max_sectors = 0xFFFF; |
| module_param(esas2r_max_sectors, int, 0); |
| MODULE_PARM_DESC(esas2r_max_sectors, |
| "Maximum number of disk sectors in a single data transfer. " |
| "Default 65535 (largest possible setting)."); |
| |
| int interrupt_mode = 1; |
| module_param(interrupt_mode, int, 0); |
| MODULE_PARM_DESC(interrupt_mode, |
| "Defines the interrupt mode to use. 0 for legacy" |
| ", 1 for MSI. Default is MSI (1)."); |
| |
| static struct pci_device_id |
| esas2r_pci_table[] = { |
| { ATTO_VENDOR_ID, 0x0049, ATTO_VENDOR_ID, 0x0049, |
| 0, |
| 0, 0 }, |
| { ATTO_VENDOR_ID, 0x0049, ATTO_VENDOR_ID, 0x004A, |
| 0, |
| 0, 0 }, |
| { ATTO_VENDOR_ID, 0x0049, ATTO_VENDOR_ID, 0x004B, |
| 0, |
| 0, 0 }, |
| { ATTO_VENDOR_ID, 0x0049, ATTO_VENDOR_ID, 0x004C, |
| 0, |
| 0, 0 }, |
| { ATTO_VENDOR_ID, 0x0049, ATTO_VENDOR_ID, 0x004D, |
| 0, |
| 0, 0 }, |
| { ATTO_VENDOR_ID, 0x0049, ATTO_VENDOR_ID, 0x004E, |
| 0, |
| 0, 0 }, |
| { 0, 0, 0, 0, |
| 0, |
| 0, 0 } |
| }; |
| |
| MODULE_DEVICE_TABLE(pci, esas2r_pci_table); |
| |
| static int |
| esas2r_probe(struct pci_dev *pcid, const struct pci_device_id *id); |
| |
| static void |
| esas2r_remove(struct pci_dev *pcid); |
| |
| static struct pci_driver |
| esas2r_pci_driver = { |
| .name = ESAS2R_DRVR_NAME, |
| .id_table = esas2r_pci_table, |
| .probe = esas2r_probe, |
| .remove = esas2r_remove, |
| .suspend = esas2r_suspend, |
| .resume = esas2r_resume, |
| }; |
| |
| static int esas2r_probe(struct pci_dev *pcid, |
| const struct pci_device_id *id) |
| { |
| struct Scsi_Host *host = NULL; |
| struct esas2r_adapter *a; |
| int err; |
| |
| size_t host_alloc_size = sizeof(struct esas2r_adapter) |
| + ((num_requests) + |
| 1) * sizeof(struct esas2r_request); |
| |
| esas2r_log_dev(ESAS2R_LOG_DEBG, &(pcid->dev), |
| "esas2r_probe() 0x%02x 0x%02x 0x%02x 0x%02x", |
| pcid->vendor, |
| pcid->device, |
| pcid->subsystem_vendor, |
| pcid->subsystem_device); |
| |
| esas2r_log_dev(ESAS2R_LOG_INFO, &(pcid->dev), |
| "before pci_enable_device() " |
| "enable_cnt: %d", |
| pcid->enable_cnt.counter); |
| |
| err = pci_enable_device(pcid); |
| if (err != 0) { |
| esas2r_log_dev(ESAS2R_LOG_CRIT, &(pcid->dev), |
| "pci_enable_device() FAIL (%d)", |
| err); |
| return -ENODEV; |
| } |
| |
| esas2r_log_dev(ESAS2R_LOG_INFO, &(pcid->dev), |
| "pci_enable_device() OK"); |
| esas2r_log_dev(ESAS2R_LOG_INFO, &(pcid->dev), |
| "after pci_enable_device() enable_cnt: %d", |
| pcid->enable_cnt.counter); |
| |
| host = scsi_host_alloc(&driver_template, host_alloc_size); |
| if (host == NULL) { |
| esas2r_log(ESAS2R_LOG_CRIT, "scsi_host_alloc() FAIL"); |
| return -ENODEV; |
| } |
| |
| memset(host->hostdata, 0, host_alloc_size); |
| |
| a = (struct esas2r_adapter *)host->hostdata; |
| |
| esas2r_log(ESAS2R_LOG_INFO, "scsi_host_alloc() OK host: %p", host); |
| |
| /* override max LUN and max target id */ |
| |
| host->max_id = ESAS2R_MAX_ID + 1; |
| host->max_lun = 255; |
| |
| /* we can handle 16-byte CDbs */ |
| |
| host->max_cmd_len = 16; |
| |
| host->can_queue = can_queue; |
| host->cmd_per_lun = cmd_per_lun; |
| host->this_id = host->max_id + 1; |
| host->max_channel = 0; |
| host->unique_id = found_adapters; |
| host->sg_tablesize = sg_tablesize; |
| host->max_sectors = esas2r_max_sectors; |
| |
| /* set to bus master for BIOses that don't do it for us */ |
| |
| esas2r_log(ESAS2R_LOG_INFO, "pci_set_master() called"); |
| |
| pci_set_master(pcid); |
| |
| if (!esas2r_init_adapter(host, pcid, found_adapters)) { |
| esas2r_log(ESAS2R_LOG_CRIT, |
| "unable to initialize device at PCI bus %x:%x", |
| pcid->bus->number, |
| pcid->devfn); |
| |
| esas2r_log_dev(ESAS2R_LOG_INFO, &(host->shost_gendev), |
| "scsi_host_put() called"); |
| |
| scsi_host_put(host); |
| |
| return 0; |
| |
| } |
| |
| esas2r_log(ESAS2R_LOG_INFO, "pci_set_drvdata(%p, %p) called", pcid, |
| host->hostdata); |
| |
| pci_set_drvdata(pcid, host); |
| |
| esas2r_log(ESAS2R_LOG_INFO, "scsi_add_host() called"); |
| |
| err = scsi_add_host(host, &pcid->dev); |
| |
| if (err) { |
| esas2r_log(ESAS2R_LOG_CRIT, "scsi_add_host returned %d", err); |
| esas2r_log_dev(ESAS2R_LOG_CRIT, &(host->shost_gendev), |
| "scsi_add_host() FAIL"); |
| |
| esas2r_log_dev(ESAS2R_LOG_INFO, &(host->shost_gendev), |
| "scsi_host_put() called"); |
| |
| scsi_host_put(host); |
| |
| esas2r_log_dev(ESAS2R_LOG_INFO, &(host->shost_gendev), |
| "pci_set_drvdata(%p, NULL) called", |
| pcid); |
| |
| pci_set_drvdata(pcid, NULL); |
| |
| return -ENODEV; |
| } |
| |
| |
| esas2r_fw_event_on(a); |
| |
| esas2r_log_dev(ESAS2R_LOG_INFO, &(host->shost_gendev), |
| "scsi_scan_host() called"); |
| |
| scsi_scan_host(host); |
| |
| /* Add sysfs binary files */ |
| if (sysfs_create_bin_file(&host->shost_dev.kobj, &bin_attr_fw)) |
| esas2r_log_dev(ESAS2R_LOG_WARN, &(host->shost_gendev), |
| "Failed to create sysfs binary file: fw"); |
| else |
| a->sysfs_fw_created = 1; |
| |
| if (sysfs_create_bin_file(&host->shost_dev.kobj, &bin_attr_fs)) |
| esas2r_log_dev(ESAS2R_LOG_WARN, &(host->shost_gendev), |
| "Failed to create sysfs binary file: fs"); |
| else |
| a->sysfs_fs_created = 1; |
| |
| if (sysfs_create_bin_file(&host->shost_dev.kobj, &bin_attr_vda)) |
| esas2r_log_dev(ESAS2R_LOG_WARN, &(host->shost_gendev), |
| "Failed to create sysfs binary file: vda"); |
| else |
| a->sysfs_vda_created = 1; |
| |
| if (sysfs_create_bin_file(&host->shost_dev.kobj, &bin_attr_hw)) |
| esas2r_log_dev(ESAS2R_LOG_WARN, &(host->shost_gendev), |
| "Failed to create sysfs binary file: hw"); |
| else |
| a->sysfs_hw_created = 1; |
| |
| if (sysfs_create_bin_file(&host->shost_dev.kobj, &bin_attr_live_nvram)) |
| esas2r_log_dev(ESAS2R_LOG_WARN, &(host->shost_gendev), |
| "Failed to create sysfs binary file: live_nvram"); |
| else |
| a->sysfs_live_nvram_created = 1; |
| |
| if (sysfs_create_bin_file(&host->shost_dev.kobj, |
| &bin_attr_default_nvram)) |
| esas2r_log_dev(ESAS2R_LOG_WARN, &(host->shost_gendev), |
| "Failed to create sysfs binary file: default_nvram"); |
| else |
| a->sysfs_default_nvram_created = 1; |
| |
| found_adapters++; |
| |
| return 0; |
| } |
| |
| static void esas2r_remove(struct pci_dev *pdev) |
| { |
| struct Scsi_Host *host; |
| int index; |
| |
| if (pdev == NULL) { |
| esas2r_log(ESAS2R_LOG_WARN, "esas2r_remove pdev==NULL"); |
| return; |
| } |
| |
| host = pci_get_drvdata(pdev); |
| |
| if (host == NULL) { |
| /* |
| * this can happen if pci_set_drvdata was already called |
| * to clear the host pointer. if this is the case, we |
| * are okay; this channel has already been cleaned up. |
| */ |
| |
| return; |
| } |
| |
| esas2r_log_dev(ESAS2R_LOG_INFO, &(pdev->dev), |
| "esas2r_remove(%p) called; " |
| "host:%p", pdev, |
| host); |
| |
| index = esas2r_cleanup(host); |
| |
| if (index < 0) |
| esas2r_log_dev(ESAS2R_LOG_WARN, &(pdev->dev), |
| "unknown host in %s", |
| __func__); |
| |
| found_adapters--; |
| |
| /* if this was the last adapter, clean up the rest of the driver */ |
| |
| if (found_adapters == 0) |
| esas2r_cleanup(NULL); |
| } |
| |
| static int __init esas2r_init(void) |
| { |
| int i; |
| |
| esas2r_log(ESAS2R_LOG_INFO, "%s called", __func__); |
| |
| /* verify valid parameters */ |
| |
| if (can_queue < 1) { |
| esas2r_log(ESAS2R_LOG_WARN, |
| "warning: can_queue must be at least 1, value " |
| "forced."); |
| can_queue = 1; |
| } else if (can_queue > 2048) { |
| esas2r_log(ESAS2R_LOG_WARN, |
| "warning: can_queue must be no larger than 2048, " |
| "value forced."); |
| can_queue = 2048; |
| } |
| |
| if (cmd_per_lun < 1) { |
| esas2r_log(ESAS2R_LOG_WARN, |
| "warning: cmd_per_lun must be at least 1, value " |
| "forced."); |
| cmd_per_lun = 1; |
| } else if (cmd_per_lun > 2048) { |
| esas2r_log(ESAS2R_LOG_WARN, |
| "warning: cmd_per_lun must be no larger than " |
| "2048, value forced."); |
| cmd_per_lun = 2048; |
| } |
| |
| if (sg_tablesize < 32) { |
| esas2r_log(ESAS2R_LOG_WARN, |
| "warning: sg_tablesize must be at least 32, " |
| "value forced."); |
| sg_tablesize = 32; |
| } |
| |
| if (esas2r_max_sectors < 1) { |
| esas2r_log(ESAS2R_LOG_WARN, |
| "warning: esas2r_max_sectors must be at least " |
| "1, value forced."); |
| esas2r_max_sectors = 1; |
| } else if (esas2r_max_sectors > 0xffff) { |
| esas2r_log(ESAS2R_LOG_WARN, |
| "warning: esas2r_max_sectors must be no larger " |
| "than 0xffff, value forced."); |
| esas2r_max_sectors = 0xffff; |
| } |
| |
| sgl_page_size &= ~(ESAS2R_SGL_ALIGN - 1); |
| |
| if (sgl_page_size < SGL_PG_SZ_MIN) |
| sgl_page_size = SGL_PG_SZ_MIN; |
| else if (sgl_page_size > SGL_PG_SZ_MAX) |
| sgl_page_size = SGL_PG_SZ_MAX; |
| |
| if (num_sg_lists < NUM_SGL_MIN) |
| num_sg_lists = NUM_SGL_MIN; |
| else if (num_sg_lists > NUM_SGL_MAX) |
| num_sg_lists = NUM_SGL_MAX; |
| |
| if (num_requests < NUM_REQ_MIN) |
| num_requests = NUM_REQ_MIN; |
| else if (num_requests > NUM_REQ_MAX) |
| num_requests = NUM_REQ_MAX; |
| |
| if (num_ae_requests < NUM_AE_MIN) |
| num_ae_requests = NUM_AE_MIN; |
| else if (num_ae_requests > NUM_AE_MAX) |
| num_ae_requests = NUM_AE_MAX; |
| |
| /* set up other globals */ |
| |
| for (i = 0; i < MAX_ADAPTERS; i++) |
| esas2r_adapters[i] = NULL; |
| |
| /* initialize */ |
| |
| driver_template.module = THIS_MODULE; |
| |
| if (pci_register_driver(&esas2r_pci_driver) != 0) |
| esas2r_log(ESAS2R_LOG_CRIT, "pci_register_driver FAILED"); |
| else |
| esas2r_log(ESAS2R_LOG_INFO, "pci_register_driver() OK"); |
| |
| if (!found_adapters) { |
| pci_unregister_driver(&esas2r_pci_driver); |
| esas2r_cleanup(NULL); |
| |
| esas2r_log(ESAS2R_LOG_CRIT, |
| "driver will not be loaded because no ATTO " |
| "%s devices were found", |
| ESAS2R_DRVR_NAME); |
| return -1; |
| } else { |
| esas2r_log(ESAS2R_LOG_INFO, "found %d adapters", |
| found_adapters); |
| } |
| |
| return 0; |
| } |
| |
| /* Handle ioctl calls to "/proc/scsi/esas2r/ATTOnode" */ |
| static const struct file_operations esas2r_proc_fops = { |
| .compat_ioctl = esas2r_proc_ioctl, |
| .unlocked_ioctl = esas2r_proc_ioctl, |
| }; |
| |
| static struct Scsi_Host *esas2r_proc_host; |
| static int esas2r_proc_major; |
| |
| long esas2r_proc_ioctl(struct file *fp, unsigned int cmd, unsigned long arg) |
| { |
| return esas2r_ioctl_handler(esas2r_proc_host->hostdata, |
| (int)cmd, (void __user *)arg); |
| } |
| |
| static void __exit esas2r_exit(void) |
| { |
| esas2r_log(ESAS2R_LOG_INFO, "%s called", __func__); |
| |
| if (esas2r_proc_major > 0) { |
| esas2r_log(ESAS2R_LOG_INFO, "unregister proc"); |
| |
| remove_proc_entry(ATTONODE_NAME, |
| esas2r_proc_host->hostt->proc_dir); |
| unregister_chrdev(esas2r_proc_major, ESAS2R_DRVR_NAME); |
| |
| esas2r_proc_major = 0; |
| } |
| |
| esas2r_log(ESAS2R_LOG_INFO, "pci_unregister_driver() called"); |
| |
| pci_unregister_driver(&esas2r_pci_driver); |
| } |
| |
| int esas2r_show_info(struct seq_file *m, struct Scsi_Host *sh) |
| { |
| struct esas2r_adapter *a = (struct esas2r_adapter *)sh->hostdata; |
| |
| struct esas2r_target *t; |
| int dev_count = 0; |
| |
| esas2r_log(ESAS2R_LOG_DEBG, "esas2r_show_info (%p,%d)", m, sh->host_no); |
| |
| seq_printf(m, ESAS2R_LONGNAME "\n" |
| "Driver version: "ESAS2R_VERSION_STR "\n" |
| "Flash version: %s\n" |
| "Firmware version: %s\n" |
| "Copyright "ESAS2R_COPYRIGHT_YEARS "\n" |
| "http://www.attotech.com\n" |
| "\n", |
| a->flash_rev, |
| a->fw_rev[0] ? a->fw_rev : "(none)"); |
| |
| |
| seq_printf(m, "Adapter information:\n" |
| "--------------------\n" |
| "Model: %s\n" |
| "SAS address: %02X%02X%02X%02X:%02X%02X%02X%02X\n", |
| esas2r_get_model_name(a), |
| a->nvram->sas_addr[0], |
| a->nvram->sas_addr[1], |
| a->nvram->sas_addr[2], |
| a->nvram->sas_addr[3], |
| a->nvram->sas_addr[4], |
| a->nvram->sas_addr[5], |
| a->nvram->sas_addr[6], |
| a->nvram->sas_addr[7]); |
| |
| seq_puts(m, "\n" |
| "Discovered devices:\n" |
| "\n" |
| " # Target ID\n" |
| "---------------\n"); |
| |
| for (t = a->targetdb; t < a->targetdb_end; t++) |
| if (t->buffered_target_state == TS_PRESENT) { |
| seq_printf(m, " %3d %3d\n", |
| ++dev_count, |
| (u16)(uintptr_t)(t - a->targetdb)); |
| } |
| |
| if (dev_count == 0) |
| seq_puts(m, "none\n"); |
| |
| seq_putc(m, '\n'); |
| return 0; |
| |
| } |
| |
| int esas2r_release(struct Scsi_Host *sh) |
| { |
| esas2r_log_dev(ESAS2R_LOG_INFO, &(sh->shost_gendev), |
| "esas2r_release() called"); |
| |
| esas2r_cleanup(sh); |
| if (sh->irq) |
| free_irq(sh->irq, NULL); |
| scsi_unregister(sh); |
| return 0; |
| } |
| |
| const char *esas2r_info(struct Scsi_Host *sh) |
| { |
| struct esas2r_adapter *a = (struct esas2r_adapter *)sh->hostdata; |
| static char esas2r_info_str[512]; |
| |
| esas2r_log_dev(ESAS2R_LOG_INFO, &(sh->shost_gendev), |
| "esas2r_info() called"); |
| |
| /* |
| * if we haven't done so already, register as a char driver |
| * and stick a node under "/proc/scsi/esas2r/ATTOnode" |
| */ |
| |
| if (esas2r_proc_major <= 0) { |
| esas2r_proc_host = sh; |
| |
| esas2r_proc_major = register_chrdev(0, ESAS2R_DRVR_NAME, |
| &esas2r_proc_fops); |
| |
| esas2r_log_dev(ESAS2R_LOG_DEBG, &(sh->shost_gendev), |
| "register_chrdev (major %d)", |
| esas2r_proc_major); |
| |
| if (esas2r_proc_major > 0) { |
| struct proc_dir_entry *pde; |
| |
| pde = proc_create(ATTONODE_NAME, 0, |
| sh->hostt->proc_dir, |
| &esas2r_proc_fops); |
| |
| if (!pde) { |
| esas2r_log_dev(ESAS2R_LOG_WARN, |
| &(sh->shost_gendev), |
| "failed to create_proc_entry"); |
| esas2r_proc_major = -1; |
| } |
| } |
| } |
| |
| sprintf(esas2r_info_str, |
| ESAS2R_LONGNAME " (bus 0x%02X, device 0x%02X, IRQ 0x%02X)" |
| " driver version: "ESAS2R_VERSION_STR " firmware version: " |
| "%s\n", |
| a->pcid->bus->number, a->pcid->devfn, a->pcid->irq, |
| a->fw_rev[0] ? a->fw_rev : "(none)"); |
| |
| return esas2r_info_str; |
| } |
| |
| /* Callback for building a request scatter/gather list */ |
| static u32 get_physaddr_from_sgc(struct esas2r_sg_context *sgc, u64 *addr) |
| { |
| u32 len; |
| |
| if (likely(sgc->cur_offset == sgc->exp_offset)) { |
| /* |
| * the normal case: caller used all bytes from previous call, so |
| * expected offset is the same as the current offset. |
| */ |
| |
| if (sgc->sgel_count < sgc->num_sgel) { |
| /* retrieve next segment, except for first time */ |
| if (sgc->exp_offset > (u8 *)0) { |
| /* advance current segment */ |
| sgc->cur_sgel = sg_next(sgc->cur_sgel); |
| ++(sgc->sgel_count); |
| } |
| |
| |
| len = sg_dma_len(sgc->cur_sgel); |
| (*addr) = sg_dma_address(sgc->cur_sgel); |
| |
| /* save the total # bytes returned to caller so far */ |
| sgc->exp_offset += len; |
| |
| } else { |
| len = 0; |
| } |
| } else if (sgc->cur_offset < sgc->exp_offset) { |
| /* |
| * caller did not use all bytes from previous call. need to |
| * compute the address based on current segment. |
| */ |
| |
| len = sg_dma_len(sgc->cur_sgel); |
| (*addr) = sg_dma_address(sgc->cur_sgel); |
| |
| sgc->exp_offset -= len; |
| |
| /* calculate PA based on prev segment address and offsets */ |
| *addr = *addr + |
| (sgc->cur_offset - sgc->exp_offset); |
| |
| sgc->exp_offset += len; |
| |
| /* re-calculate length based on offset */ |
| len = lower_32_bits( |
| sgc->exp_offset - sgc->cur_offset); |
| } else { /* if ( sgc->cur_offset > sgc->exp_offset ) */ |
| /* |
| * we don't expect the caller to skip ahead. |
| * cur_offset will never exceed the len we return |
| */ |
| len = 0; |
| } |
| |
| return len; |
| } |
| |
| int esas2r_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd) |
| { |
| struct esas2r_adapter *a = |
| (struct esas2r_adapter *)cmd->device->host->hostdata; |
| struct esas2r_request *rq; |
| struct esas2r_sg_context sgc; |
| unsigned bufflen; |
| |
| /* Assume success, if it fails we will fix the result later. */ |
| cmd->result = DID_OK << 16; |
| |
| if (unlikely(test_bit(AF_DEGRADED_MODE, &a->flags))) { |
| cmd->result = DID_NO_CONNECT << 16; |
| cmd->scsi_done(cmd); |
| return 0; |
| } |
| |
| rq = esas2r_alloc_request(a); |
| if (unlikely(rq == NULL)) { |
| esas2r_debug("esas2r_alloc_request failed"); |
| return SCSI_MLQUEUE_HOST_BUSY; |
| } |
| |
| rq->cmd = cmd; |
| bufflen = scsi_bufflen(cmd); |
| |
| if (likely(bufflen != 0)) { |
| if (cmd->sc_data_direction == DMA_TO_DEVICE) |
| rq->vrq->scsi.flags |= cpu_to_le32(FCP_CMND_WRD); |
| else if (cmd->sc_data_direction == DMA_FROM_DEVICE) |
| rq->vrq->scsi.flags |= cpu_to_le32(FCP_CMND_RDD); |
| } |
| |
| memcpy(rq->vrq->scsi.cdb, cmd->cmnd, cmd->cmd_len); |
| rq->vrq->scsi.length = cpu_to_le32(bufflen); |
| rq->target_id = cmd->device->id; |
| rq->vrq->scsi.flags |= cpu_to_le32(cmd->device->lun); |
| rq->sense_buf = cmd->sense_buffer; |
| rq->sense_len = SCSI_SENSE_BUFFERSIZE; |
| |
| esas2r_sgc_init(&sgc, a, rq, NULL); |
| |
| sgc.length = bufflen; |
| sgc.cur_offset = NULL; |
| |
| sgc.cur_sgel = scsi_sglist(cmd); |
| sgc.exp_offset = NULL; |
| sgc.num_sgel = scsi_dma_map(cmd); |
| sgc.sgel_count = 0; |
| |
| if (unlikely(sgc.num_sgel < 0)) { |
| esas2r_free_request(a, rq); |
| return SCSI_MLQUEUE_HOST_BUSY; |
| } |
| |
| sgc.get_phys_addr = (PGETPHYSADDR)get_physaddr_from_sgc; |
| |
| if (unlikely(!esas2r_build_sg_list(a, rq, &sgc))) { |
| scsi_dma_unmap(cmd); |
| esas2r_free_request(a, rq); |
| return SCSI_MLQUEUE_HOST_BUSY; |
| } |
| |
| esas2r_debug("start request %p to %d:%d\n", rq, (int)cmd->device->id, |
| (int)cmd->device->lun); |
| |
| esas2r_start_request(a, rq); |
| |
| return 0; |
| } |
| |
| static void complete_task_management_request(struct esas2r_adapter *a, |
| struct esas2r_request *rq) |
| { |
| (*rq->task_management_status_ptr) = rq->req_stat; |
| esas2r_free_request(a, rq); |
| } |
| |
| /** |
| * Searches the specified queue for the specified queue for the command |
| * to abort. |
| * |
| * @param [in] a |
| * @param [in] abort_request |
| * @param [in] cmd |
| * t |
| * @return 0 on failure, 1 if command was not found, 2 if command was found |
| */ |
| static int esas2r_check_active_queue(struct esas2r_adapter *a, |
| struct esas2r_request **abort_request, |
| struct scsi_cmnd *cmd, |
| struct list_head *queue) |
| { |
| bool found = false; |
| struct esas2r_request *ar = *abort_request; |
| struct esas2r_request *rq; |
| struct list_head *element, *next; |
| |
| list_for_each_safe(element, next, queue) { |
| |
| rq = list_entry(element, struct esas2r_request, req_list); |
| |
| if (rq->cmd == cmd) { |
| |
| /* Found the request. See what to do with it. */ |
| if (queue == &a->active_list) { |
| /* |
| * We are searching the active queue, which |
| * means that we need to send an abort request |
| * to the firmware. |
| */ |
| ar = esas2r_alloc_request(a); |
| if (ar == NULL) { |
| esas2r_log_dev(ESAS2R_LOG_WARN, |
| &(a->host->shost_gendev), |
| "unable to allocate an abort request for cmd %p", |
| cmd); |
| return 0; /* Failure */ |
| } |
| |
| /* |
| * Task management request must be formatted |
| * with a lock held. |
| */ |
| ar->sense_len = 0; |
| ar->vrq->scsi.length = 0; |
| ar->target_id = rq->target_id; |
| ar->vrq->scsi.flags |= cpu_to_le32( |
| (u8)le32_to_cpu(rq->vrq->scsi.flags)); |
| |
| memset(ar->vrq->scsi.cdb, 0, |
| sizeof(ar->vrq->scsi.cdb)); |
| |
| ar->vrq->scsi.flags |= cpu_to_le32( |
| FCP_CMND_TRM); |
| ar->vrq->scsi.u.abort_handle = |
| rq->vrq->scsi.handle; |
| } else { |
| /* |
| * The request is pending but not active on |
| * the firmware. Just free it now and we'll |
| * report the successful abort below. |
| */ |
| list_del_init(&rq->req_list); |
| esas2r_free_request(a, rq); |
| } |
| |
| found = true; |
| break; |
| } |
| |
| } |
| |
| if (!found) |
| return 1; /* Not found */ |
| |
| return 2; /* found */ |
| |
| |
| } |
| |
| int esas2r_eh_abort(struct scsi_cmnd *cmd) |
| { |
| struct esas2r_adapter *a = |
| (struct esas2r_adapter *)cmd->device->host->hostdata; |
| struct esas2r_request *abort_request = NULL; |
| unsigned long flags; |
| struct list_head *queue; |
| int result; |
| |
| esas2r_log(ESAS2R_LOG_INFO, "eh_abort (%p)", cmd); |
| |
| if (test_bit(AF_DEGRADED_MODE, &a->flags)) { |
| cmd->result = DID_ABORT << 16; |
| |
| scsi_set_resid(cmd, 0); |
| |
| cmd->scsi_done(cmd); |
| |
| return SUCCESS; |
| } |
| |
| spin_lock_irqsave(&a->queue_lock, flags); |
| |
| /* |
| * Run through the defer and active queues looking for the request |
| * to abort. |
| */ |
| |
| queue = &a->defer_list; |
| |
| check_active_queue: |
| |
| result = esas2r_check_active_queue(a, &abort_request, cmd, queue); |
| |
| if (!result) { |
| spin_unlock_irqrestore(&a->queue_lock, flags); |
| return FAILED; |
| } else if (result == 2 && (queue == &a->defer_list)) { |
| queue = &a->active_list; |
| goto check_active_queue; |
| } |
| |
| spin_unlock_irqrestore(&a->queue_lock, flags); |
| |
| if (abort_request) { |
| u8 task_management_status = RS_PENDING; |
| |
| /* |
| * the request is already active, so we need to tell |
| * the firmware to abort it and wait for the response. |
| */ |
| |
| abort_request->comp_cb = complete_task_management_request; |
| abort_request->task_management_status_ptr = |
| &task_management_status; |
| |
| esas2r_start_request(a, abort_request); |
| |
| if (atomic_read(&a->disable_cnt) == 0) |
| esas2r_do_deferred_processes(a); |
| |
| while (task_management_status == RS_PENDING) |
| msleep(10); |
| |
| /* |
| * Once we get here, the original request will have been |
| * completed by the firmware and the abort request will have |
| * been cleaned up. we're done! |
| */ |
| |
| return SUCCESS; |
| } |
| |
| /* |
| * If we get here, either we found the inactive request and |
| * freed it, or we didn't find it at all. Either way, success! |
| */ |
| |
| cmd->result = DID_ABORT << 16; |
| |
| scsi_set_resid(cmd, 0); |
| |
| cmd->scsi_done(cmd); |
| |
| return SUCCESS; |
| } |
| |
| static int esas2r_host_bus_reset(struct scsi_cmnd *cmd, bool host_reset) |
| { |
| struct esas2r_adapter *a = |
| (struct esas2r_adapter *)cmd->device->host->hostdata; |
| |
| if (test_bit(AF_DEGRADED_MODE, &a->flags)) |
| return FAILED; |
| |
| if (host_reset) |
| esas2r_reset_adapter(a); |
| else |
| esas2r_reset_bus(a); |
| |
| /* above call sets the AF_OS_RESET flag. wait for it to clear. */ |
| |
| while (test_bit(AF_OS_RESET, &a->flags)) { |
| msleep(10); |
| |
| if (test_bit(AF_DEGRADED_MODE, &a->flags)) |
| return FAILED; |
| } |
| |
| if (test_bit(AF_DEGRADED_MODE, &a->flags)) |
| return FAILED; |
| |
| return SUCCESS; |
| } |
| |
| int esas2r_host_reset(struct scsi_cmnd *cmd) |
| { |
| esas2r_log(ESAS2R_LOG_INFO, "host_reset (%p)", cmd); |
| |
| return esas2r_host_bus_reset(cmd, true); |
| } |
| |
| int esas2r_bus_reset(struct scsi_cmnd *cmd) |
| { |
| esas2r_log(ESAS2R_LOG_INFO, "bus_reset (%p)", cmd); |
| |
| return esas2r_host_bus_reset(cmd, false); |
| } |
| |
| static int esas2r_dev_targ_reset(struct scsi_cmnd *cmd, bool target_reset) |
| { |
| struct esas2r_adapter *a = |
| (struct esas2r_adapter *)cmd->device->host->hostdata; |
| struct esas2r_request *rq; |
| u8 task_management_status = RS_PENDING; |
| bool completed; |
| |
| if (test_bit(AF_DEGRADED_MODE, &a->flags)) |
| return FAILED; |
| |
| retry: |
| rq = esas2r_alloc_request(a); |
| if (rq == NULL) { |
| if (target_reset) { |
| esas2r_log(ESAS2R_LOG_CRIT, |
| "unable to allocate a request for a " |
| "target reset (%d)!", |
| cmd->device->id); |
| } else { |
| esas2r_log(ESAS2R_LOG_CRIT, |
| "unable to allocate a request for a " |
| "device reset (%d:%d)!", |
| cmd->device->id, |
| cmd->device->lun); |
| } |
| |
| |
| return FAILED; |
| } |
| |
| rq->target_id = cmd->device->id; |
| rq->vrq->scsi.flags |= cpu_to_le32(cmd->device->lun); |
| rq->req_stat = RS_PENDING; |
| |
| rq->comp_cb = complete_task_management_request; |
| rq->task_management_status_ptr = &task_management_status; |
| |
| if (target_reset) { |
| esas2r_debug("issuing target reset (%p) to id %d", rq, |
| cmd->device->id); |
| completed = esas2r_send_task_mgmt(a, rq, 0x20); |
| } else { |
| esas2r_debug("issuing device reset (%p) to id %d lun %d", rq, |
| cmd->device->id, cmd->device->lun); |
| completed = esas2r_send_task_mgmt(a, rq, 0x10); |
| } |
| |
| if (completed) { |
| /* Task management cmd completed right away, need to free it. */ |
| |
| esas2r_free_request(a, rq); |
| } else { |
| /* |
| * Wait for firmware to complete the request. Completion |
| * callback will free it. |
| */ |
| while (task_management_status == RS_PENDING) |
| msleep(10); |
| } |
| |
| if (test_bit(AF_DEGRADED_MODE, &a->flags)) |
| return FAILED; |
| |
| if (task_management_status == RS_BUSY) { |
| /* |
| * Busy, probably because we are flashing. Wait a bit and |
| * try again. |
| */ |
| msleep(100); |
| goto retry; |
| } |
| |
| return SUCCESS; |
| } |
| |
| int esas2r_device_reset(struct scsi_cmnd *cmd) |
| { |
| esas2r_log(ESAS2R_LOG_INFO, "device_reset (%p)", cmd); |
| |
| return esas2r_dev_targ_reset(cmd, false); |
| |
| } |
| |
| int esas2r_target_reset(struct scsi_cmnd *cmd) |
| { |
| esas2r_log(ESAS2R_LOG_INFO, "target_reset (%p)", cmd); |
| |
| return esas2r_dev_targ_reset(cmd, true); |
| } |
| |
| void esas2r_log_request_failure(struct esas2r_adapter *a, |
| struct esas2r_request *rq) |
| { |
| u8 reqstatus = rq->req_stat; |
| |
| if (reqstatus == RS_SUCCESS) |
| return; |
| |
| if (rq->vrq->scsi.function == VDA_FUNC_SCSI) { |
| if (reqstatus == RS_SCSI_ERROR) { |
| if (rq->func_rsp.scsi_rsp.sense_len >= 13) { |
| esas2r_log(ESAS2R_LOG_WARN, |
| "request failure - SCSI error %x ASC:%x ASCQ:%x CDB:%x", |
| rq->sense_buf[2], rq->sense_buf[12], |
| rq->sense_buf[13], |
| rq->vrq->scsi.cdb[0]); |
| } else { |
| esas2r_log(ESAS2R_LOG_WARN, |
| "request failure - SCSI error CDB:%x\n", |
| rq->vrq->scsi.cdb[0]); |
| } |
| } else if ((rq->vrq->scsi.cdb[0] != INQUIRY |
| && rq->vrq->scsi.cdb[0] != REPORT_LUNS) |
| || (reqstatus != RS_SEL |
| && reqstatus != RS_SEL2)) { |
| if ((reqstatus == RS_UNDERRUN) && |
| (rq->vrq->scsi.cdb[0] == INQUIRY)) { |
| /* Don't log inquiry underruns */ |
| } else { |
| esas2r_log(ESAS2R_LOG_WARN, |
| "request failure - cdb:%x reqstatus:%d target:%d", |
| rq->vrq->scsi.cdb[0], reqstatus, |
| rq->target_id); |
| } |
| } |
| } |
| } |
| |
| void esas2r_wait_request(struct esas2r_adapter *a, struct esas2r_request *rq) |
| { |
| u32 starttime; |
| u32 timeout; |
| |
| starttime = jiffies_to_msecs(jiffies); |
| timeout = rq->timeout ? rq->timeout : 5000; |
| |
| while (true) { |
| esas2r_polled_interrupt(a); |
| |
| if (rq->req_stat != RS_STARTED) |
| break; |
| |
| schedule_timeout_interruptible(msecs_to_jiffies(100)); |
| |
| if ((jiffies_to_msecs(jiffies) - starttime) > timeout) { |
| esas2r_hdebug("request TMO"); |
| esas2r_bugon(); |
| |
| rq->req_stat = RS_TIMEOUT; |
| |
| esas2r_local_reset_adapter(a); |
| return; |
| } |
| } |
| } |
| |
| u32 esas2r_map_data_window(struct esas2r_adapter *a, u32 addr_lo) |
| { |
| u32 offset = addr_lo & (MW_DATA_WINDOW_SIZE - 1); |
| u32 base = addr_lo & -(signed int)MW_DATA_WINDOW_SIZE; |
| |
| if (a->window_base != base) { |
| esas2r_write_register_dword(a, MVR_PCI_WIN1_REMAP, |
| base | MVRPW1R_ENABLE); |
| esas2r_flush_register_dword(a, MVR_PCI_WIN1_REMAP); |
| a->window_base = base; |
| } |
| |
| return offset; |
| } |
| |
| /* Read a block of data from chip memory */ |
| bool esas2r_read_mem_block(struct esas2r_adapter *a, |
| void *to, |
| u32 from, |
| u32 size) |
| { |
| u8 *end = (u8 *)to; |
| |
| while (size) { |
| u32 len; |
| u32 offset; |
| u32 iatvr; |
| |
| iatvr = (from & -(signed int)MW_DATA_WINDOW_SIZE); |
| |
| esas2r_map_data_window(a, iatvr); |
| |
| offset = from & (MW_DATA_WINDOW_SIZE - 1); |
| len = size; |
| |
| if (len > MW_DATA_WINDOW_SIZE - offset) |
| len = MW_DATA_WINDOW_SIZE - offset; |
| |
| from += len; |
| size -= len; |
| |
| while (len--) { |
| *end++ = esas2r_read_data_byte(a, offset); |
| offset++; |
| } |
| } |
| |
| return true; |
| } |
| |
| void esas2r_nuxi_mgt_data(u8 function, void *data) |
| { |
| struct atto_vda_grp_info *g; |
| struct atto_vda_devinfo *d; |
| struct atto_vdapart_info *p; |
| struct atto_vda_dh_info *h; |
| struct atto_vda_metrics_info *m; |
| struct atto_vda_schedule_info *s; |
| struct atto_vda_buzzer_info *b; |
| u8 i; |
| |
| switch (function) { |
| case VDAMGT_BUZZER_INFO: |
| case VDAMGT_BUZZER_SET: |
| |
| b = (struct atto_vda_buzzer_info *)data; |
| |
| b->duration = le32_to_cpu(b->duration); |
| break; |
| |
| case VDAMGT_SCHEDULE_INFO: |
| case VDAMGT_SCHEDULE_EVENT: |
| |
| s = (struct atto_vda_schedule_info *)data; |
| |
| s->id = le32_to_cpu(s->id); |
| |
| break; |
| |
| case VDAMGT_DEV_INFO: |
| case VDAMGT_DEV_CLEAN: |
| case VDAMGT_DEV_PT_INFO: |
| case VDAMGT_DEV_FEATURES: |
| case VDAMGT_DEV_PT_FEATURES: |
| case VDAMGT_DEV_OPERATION: |
| |
| d = (struct atto_vda_devinfo *)data; |
| |
| d->capacity = le64_to_cpu(d->capacity); |
| d->block_size = le32_to_cpu(d->block_size); |
| d->ses_dev_index = le16_to_cpu(d->ses_dev_index); |
| d->target_id = le16_to_cpu(d->target_id); |
| d->lun = le16_to_cpu(d->lun); |
| d->features = le16_to_cpu(d->features); |
| break; |
| |
| case VDAMGT_GRP_INFO: |
| case VDAMGT_GRP_CREATE: |
| case VDAMGT_GRP_DELETE: |
| case VDAMGT_ADD_STORAGE: |
| case VDAMGT_MEMBER_ADD: |
| case VDAMGT_GRP_COMMIT: |
| case VDAMGT_GRP_REBUILD: |
| case VDAMGT_GRP_COMMIT_INIT: |
| case VDAMGT_QUICK_RAID: |
| case VDAMGT_GRP_FEATURES: |
| case VDAMGT_GRP_COMMIT_INIT_AUTOMAP: |
| case VDAMGT_QUICK_RAID_INIT_AUTOMAP: |
| case VDAMGT_SPARE_LIST: |
| case VDAMGT_SPARE_ADD: |
| case VDAMGT_SPARE_REMOVE: |
| case VDAMGT_LOCAL_SPARE_ADD: |
| case VDAMGT_GRP_OPERATION: |
| |
| g = (struct atto_vda_grp_info *)data; |
| |
| g->capacity = le64_to_cpu(g->capacity); |
| g->block_size = le32_to_cpu(g->block_size); |
| g->interleave = le32_to_cpu(g->interleave); |
| g->features = le16_to_cpu(g->features); |
| |
| for (i = 0; i < 32; i++) |
| g->members[i] = le16_to_cpu(g->members[i]); |
| |
| break; |
| |
| case VDAMGT_PART_INFO: |
| case VDAMGT_PART_MAP: |
| case VDAMGT_PART_UNMAP: |
| case VDAMGT_PART_AUTOMAP: |
| case VDAMGT_PART_SPLIT: |
| case VDAMGT_PART_MERGE: |
| |
| p = (struct atto_vdapart_info *)data; |
| |
| p->part_size = le64_to_cpu(p->part_size); |
| p->start_lba = le32_to_cpu(p->start_lba); |
| p->block_size = le32_to_cpu(p->block_size); |
| p->target_id = le16_to_cpu(p->target_id); |
| break; |
| |
| case VDAMGT_DEV_HEALTH_REQ: |
| |
| h = (struct atto_vda_dh_info *)data; |
| |
| h->med_defect_cnt = le32_to_cpu(h->med_defect_cnt); |
| h->info_exc_cnt = le32_to_cpu(h->info_exc_cnt); |
| break; |
| |
| case VDAMGT_DEV_METRICS: |
| |
| m = (struct atto_vda_metrics_info *)data; |
| |
| for (i = 0; i < 32; i++) |
| m->dev_indexes[i] = le16_to_cpu(m->dev_indexes[i]); |
| |
| break; |
| |
| default: |
| break; |
| } |
| } |
| |
| void esas2r_nuxi_cfg_data(u8 function, void *data) |
| { |
| struct atto_vda_cfg_init *ci; |
| |
| switch (function) { |
| case VDA_CFG_INIT: |
| case VDA_CFG_GET_INIT: |
| case VDA_CFG_GET_INIT2: |
| |
| ci = (struct atto_vda_cfg_init *)data; |
| |
| ci->date_time.year = le16_to_cpu(ci->date_time.year); |
| ci->sgl_page_size = le32_to_cpu(ci->sgl_page_size); |
| ci->vda_version = le32_to_cpu(ci->vda_version); |
| ci->epoch_time = le32_to_cpu(ci->epoch_time); |
| ci->ioctl_tunnel = le32_to_cpu(ci->ioctl_tunnel); |
| ci->num_targets_backend = le32_to_cpu(ci->num_targets_backend); |
| break; |
| |
| default: |
| break; |
| } |
| } |
| |
| void esas2r_nuxi_ae_data(union atto_vda_ae *ae) |
| { |
| struct atto_vda_ae_raid *r = &ae->raid; |
| struct atto_vda_ae_lu *l = &ae->lu; |
| |
| switch (ae->hdr.bytype) { |
| case VDAAE_HDR_TYPE_RAID: |
| |
| r->dwflags = le32_to_cpu(r->dwflags); |
| break; |
| |
| case VDAAE_HDR_TYPE_LU: |
| |
| l->dwevent = le32_to_cpu(l->dwevent); |
| l->wphys_target_id = le16_to_cpu(l->wphys_target_id); |
| l->id.tgtlun.wtarget_id = le16_to_cpu(l->id.tgtlun.wtarget_id); |
| |
| if (l->hdr.bylength >= offsetof(struct atto_vda_ae_lu, id) |
| + sizeof(struct atto_vda_ae_lu_tgt_lun_raid)) { |
| l->id.tgtlun_raid.dwinterleave |
| = le32_to_cpu(l->id.tgtlun_raid.dwinterleave); |
| l->id.tgtlun_raid.dwblock_size |
| = le32_to_cpu(l->id.tgtlun_raid.dwblock_size); |
| } |
| |
| break; |
| |
| case VDAAE_HDR_TYPE_DISK: |
| default: |
| break; |
| } |
| } |
| |
| void esas2r_free_request(struct esas2r_adapter *a, struct esas2r_request *rq) |
| { |
| unsigned long flags; |
| |
| esas2r_rq_destroy_request(rq, a); |
| spin_lock_irqsave(&a->request_lock, flags); |
| list_add(&rq->comp_list, &a->avail_request); |
| spin_unlock_irqrestore(&a->request_lock, flags); |
| } |
| |
| struct esas2r_request *esas2r_alloc_request(struct esas2r_adapter *a) |
| { |
| struct esas2r_request *rq; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&a->request_lock, flags); |
| |
| if (unlikely(list_empty(&a->avail_request))) { |
| spin_unlock_irqrestore(&a->request_lock, flags); |
| return NULL; |
| } |
| |
| rq = list_first_entry(&a->avail_request, struct esas2r_request, |
| comp_list); |
| list_del(&rq->comp_list); |
| spin_unlock_irqrestore(&a->request_lock, flags); |
| esas2r_rq_init_request(rq, a); |
| |
| return rq; |
| |
| } |
| |
| void esas2r_complete_request_cb(struct esas2r_adapter *a, |
| struct esas2r_request *rq) |
| { |
| esas2r_debug("completing request %p\n", rq); |
| |
| scsi_dma_unmap(rq->cmd); |
| |
| if (unlikely(rq->req_stat != RS_SUCCESS)) { |
| esas2r_debug("[%x STATUS %x:%x (%x)]", rq->target_id, |
| rq->req_stat, |
| rq->func_rsp.scsi_rsp.scsi_stat, |
| rq->cmd); |
| |
| rq->cmd->result = |
| ((esas2r_req_status_to_error(rq->req_stat) << 16) |
| | (rq->func_rsp.scsi_rsp.scsi_stat & STATUS_MASK)); |
| |
| if (rq->req_stat == RS_UNDERRUN) |
| scsi_set_resid(rq->cmd, |
| le32_to_cpu(rq->func_rsp.scsi_rsp. |
| residual_length)); |
| else |
| scsi_set_resid(rq->cmd, 0); |
| } |
| |
| rq->cmd->scsi_done(rq->cmd); |
| |
| esas2r_free_request(a, rq); |
| } |
| |
| /* Run tasklet to handle stuff outside of interrupt context. */ |
| void esas2r_adapter_tasklet(unsigned long context) |
| { |
| struct esas2r_adapter *a = (struct esas2r_adapter *)context; |
| |
| if (unlikely(test_bit(AF2_TIMER_TICK, &a->flags2))) { |
| clear_bit(AF2_TIMER_TICK, &a->flags2); |
| esas2r_timer_tick(a); |
| } |
| |
| if (likely(test_bit(AF2_INT_PENDING, &a->flags2))) { |
| clear_bit(AF2_INT_PENDING, &a->flags2); |
| esas2r_adapter_interrupt(a); |
| } |
| |
| if (esas2r_is_tasklet_pending(a)) |
| esas2r_do_tasklet_tasks(a); |
| |
| if (esas2r_is_tasklet_pending(a) |
| || (test_bit(AF2_INT_PENDING, &a->flags2)) |
| || (test_bit(AF2_TIMER_TICK, &a->flags2))) { |
| clear_bit(AF_TASKLET_SCHEDULED, &a->flags); |
| esas2r_schedule_tasklet(a); |
| } else { |
| clear_bit(AF_TASKLET_SCHEDULED, &a->flags); |
| } |
| } |
| |
| static void esas2r_timer_callback(unsigned long context); |
| |
| void esas2r_kickoff_timer(struct esas2r_adapter *a) |
| { |
| init_timer(&a->timer); |
| |
| a->timer.function = esas2r_timer_callback; |
| a->timer.data = (unsigned long)a; |
| a->timer.expires = jiffies + |
| msecs_to_jiffies(100); |
| |
| add_timer(&a->timer); |
| } |
| |
| static void esas2r_timer_callback(unsigned long context) |
| { |
| struct esas2r_adapter *a = (struct esas2r_adapter *)context; |
| |
| set_bit(AF2_TIMER_TICK, &a->flags2); |
| |
| esas2r_schedule_tasklet(a); |
| |
| esas2r_kickoff_timer(a); |
| } |
| |
| /* |
| * Firmware events need to be handled outside of interrupt context |
| * so we schedule a delayed_work to handle them. |
| */ |
| |
| static void |
| esas2r_free_fw_event(struct esas2r_fw_event_work *fw_event) |
| { |
| unsigned long flags; |
| struct esas2r_adapter *a = fw_event->a; |
| |
| spin_lock_irqsave(&a->fw_event_lock, flags); |
| list_del(&fw_event->list); |
| kfree(fw_event); |
| spin_unlock_irqrestore(&a->fw_event_lock, flags); |
| } |
| |
| void |
| esas2r_fw_event_off(struct esas2r_adapter *a) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&a->fw_event_lock, flags); |
| a->fw_events_off = 1; |
| spin_unlock_irqrestore(&a->fw_event_lock, flags); |
| } |
| |
| void |
| esas2r_fw_event_on(struct esas2r_adapter *a) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&a->fw_event_lock, flags); |
| a->fw_events_off = 0; |
| spin_unlock_irqrestore(&a->fw_event_lock, flags); |
| } |
| |
| static void esas2r_add_device(struct esas2r_adapter *a, u16 target_id) |
| { |
| int ret; |
| struct scsi_device *scsi_dev; |
| |
| scsi_dev = scsi_device_lookup(a->host, 0, target_id, 0); |
| |
| if (scsi_dev) { |
| esas2r_log_dev( |
| ESAS2R_LOG_WARN, |
| &(scsi_dev-> |
| sdev_gendev), |
| "scsi device already exists at id %d", target_id); |
| |
| scsi_device_put(scsi_dev); |
| } else { |
| esas2r_log_dev( |
| ESAS2R_LOG_INFO, |
| &(a->host-> |
| shost_gendev), |
| "scsi_add_device() called for 0:%d:0", |
| target_id); |
| |
| ret = scsi_add_device(a->host, 0, target_id, 0); |
| if (ret) { |
| esas2r_log_dev( |
| ESAS2R_LOG_CRIT, |
| &(a->host-> |
| shost_gendev), |
| "scsi_add_device failed with %d for id %d", |
| ret, target_id); |
| } |
| } |
| } |
| |
| static void esas2r_remove_device(struct esas2r_adapter *a, u16 target_id) |
| { |
| struct scsi_device *scsi_dev; |
| |
| scsi_dev = scsi_device_lookup(a->host, 0, target_id, 0); |
| |
| if (scsi_dev) { |
| scsi_device_set_state(scsi_dev, SDEV_OFFLINE); |
| |
| esas2r_log_dev( |
| ESAS2R_LOG_INFO, |
| &(scsi_dev-> |
| sdev_gendev), |
| "scsi_remove_device() called for 0:%d:0", |
| target_id); |
| |
| scsi_remove_device(scsi_dev); |
| |
| esas2r_log_dev( |
| ESAS2R_LOG_INFO, |
| &(scsi_dev-> |
| sdev_gendev), |
| "scsi_device_put() called"); |
| |
| scsi_device_put(scsi_dev); |
| } else { |
| esas2r_log_dev( |
| ESAS2R_LOG_WARN, |
| &(a->host->shost_gendev), |
| "no target found at id %d", |
| target_id); |
| } |
| } |
| |
| /* |
| * Sends a firmware asynchronous event to anyone who happens to be |
| * listening on the defined ATTO VDA event ports. |
| */ |
| static void esas2r_send_ae_event(struct esas2r_fw_event_work *fw_event) |
| { |
| struct esas2r_vda_ae *ae = (struct esas2r_vda_ae *)fw_event->data; |
| char *type; |
| |
| switch (ae->vda_ae.hdr.bytype) { |
| case VDAAE_HDR_TYPE_RAID: |
| type = "RAID group state change"; |
| break; |
| |
| case VDAAE_HDR_TYPE_LU: |
| type = "Mapped destination LU change"; |
| break; |
| |
| case VDAAE_HDR_TYPE_DISK: |
| type = "Physical disk inventory change"; |
| break; |
| |
| case VDAAE_HDR_TYPE_RESET: |
| type = "Firmware reset"; |
| break; |
| |
| case VDAAE_HDR_TYPE_LOG_INFO: |
| type = "Event Log message (INFO level)"; |
| break; |
| |
| case VDAAE_HDR_TYPE_LOG_WARN: |
| type = "Event Log message (WARN level)"; |
| break; |
| |
| case VDAAE_HDR_TYPE_LOG_CRIT: |
| type = "Event Log message (CRIT level)"; |
| break; |
| |
| case VDAAE_HDR_TYPE_LOG_FAIL: |
| type = "Event Log message (FAIL level)"; |
| break; |
| |
| case VDAAE_HDR_TYPE_NVC: |
| type = "NVCache change"; |
| break; |
| |
| case VDAAE_HDR_TYPE_TLG_INFO: |
| type = "Time stamped log message (INFO level)"; |
| break; |
| |
| case VDAAE_HDR_TYPE_TLG_WARN: |
| type = "Time stamped log message (WARN level)"; |
| break; |
| |
| case VDAAE_HDR_TYPE_TLG_CRIT: |
| type = "Time stamped log message (CRIT level)"; |
| break; |
| |
| case VDAAE_HDR_TYPE_PWRMGT: |
| type = "Power management"; |
| break; |
| |
| case VDAAE_HDR_TYPE_MUTE: |
| type = "Mute button pressed"; |
| break; |
| |
| case VDAAE_HDR_TYPE_DEV: |
| type = "Device attribute change"; |
| break; |
| |
| default: |
| type = "Unknown"; |
| break; |
| } |
| |
| esas2r_log(ESAS2R_LOG_WARN, |
| "An async event of type \"%s\" was received from the firmware. The event contents are:", |
| type); |
| esas2r_log_hexdump(ESAS2R_LOG_WARN, &ae->vda_ae, |
| ae->vda_ae.hdr.bylength); |
| |
| } |
| |
| static void |
| esas2r_firmware_event_work(struct work_struct *work) |
| { |
| struct esas2r_fw_event_work *fw_event = |
| container_of(work, struct esas2r_fw_event_work, work.work); |
| |
| struct esas2r_adapter *a = fw_event->a; |
| |
| u16 target_id = *(u16 *)&fw_event->data[0]; |
| |
| if (a->fw_events_off) |
| goto done; |
| |
| switch (fw_event->type) { |
| case fw_event_null: |
| break; /* do nothing */ |
| |
| case fw_event_lun_change: |
| esas2r_remove_device(a, target_id); |
| esas2r_add_device(a, target_id); |
| break; |
| |
| case fw_event_present: |
| esas2r_add_device(a, target_id); |
| break; |
| |
| case fw_event_not_present: |
| esas2r_remove_device(a, target_id); |
| break; |
| |
| case fw_event_vda_ae: |
| esas2r_send_ae_event(fw_event); |
| break; |
| } |
| |
| done: |
| esas2r_free_fw_event(fw_event); |
| } |
| |
| void esas2r_queue_fw_event(struct esas2r_adapter *a, |
| enum fw_event_type type, |
| void *data, |
| int data_sz) |
| { |
| struct esas2r_fw_event_work *fw_event; |
| unsigned long flags; |
| |
| fw_event = kzalloc(sizeof(struct esas2r_fw_event_work), GFP_ATOMIC); |
| if (!fw_event) { |
| esas2r_log(ESAS2R_LOG_WARN, |
| "esas2r_queue_fw_event failed to alloc"); |
| return; |
| } |
| |
| if (type == fw_event_vda_ae) { |
| struct esas2r_vda_ae *ae = |
| (struct esas2r_vda_ae *)fw_event->data; |
| |
| ae->signature = ESAS2R_VDA_EVENT_SIG; |
| ae->bus_number = a->pcid->bus->number; |
| ae->devfn = a->pcid->devfn; |
| memcpy(&ae->vda_ae, data, sizeof(ae->vda_ae)); |
| } else { |
| memcpy(fw_event->data, data, data_sz); |
| } |
| |
| fw_event->type = type; |
| fw_event->a = a; |
| |
| spin_lock_irqsave(&a->fw_event_lock, flags); |
| list_add_tail(&fw_event->list, &a->fw_event_list); |
| INIT_DELAYED_WORK(&fw_event->work, esas2r_firmware_event_work); |
| queue_delayed_work_on( |
| smp_processor_id(), a->fw_event_q, &fw_event->work, |
| msecs_to_jiffies(1)); |
| spin_unlock_irqrestore(&a->fw_event_lock, flags); |
| } |
| |
| void esas2r_target_state_changed(struct esas2r_adapter *a, u16 targ_id, |
| u8 state) |
| { |
| if (state == TS_LUN_CHANGE) |
| esas2r_queue_fw_event(a, fw_event_lun_change, &targ_id, |
| sizeof(targ_id)); |
| else if (state == TS_PRESENT) |
| esas2r_queue_fw_event(a, fw_event_present, &targ_id, |
| sizeof(targ_id)); |
| else if (state == TS_NOT_PRESENT) |
| esas2r_queue_fw_event(a, fw_event_not_present, &targ_id, |
| sizeof(targ_id)); |
| } |
| |
| /* Translate status to a Linux SCSI mid-layer error code */ |
| int esas2r_req_status_to_error(u8 req_stat) |
| { |
| switch (req_stat) { |
| case RS_OVERRUN: |
| case RS_UNDERRUN: |
| case RS_SUCCESS: |
| /* |
| * NOTE: SCSI mid-layer wants a good status for a SCSI error, because |
| * it will check the scsi_stat value in the completion anyway. |
| */ |
| case RS_SCSI_ERROR: |
| return DID_OK; |
| |
| case RS_SEL: |
| case RS_SEL2: |
| return DID_NO_CONNECT; |
| |
| case RS_RESET: |
| return DID_RESET; |
| |
| case RS_ABORTED: |
| return DID_ABORT; |
| |
| case RS_BUSY: |
| return DID_BUS_BUSY; |
| } |
| |
| /* everything else is just an error. */ |
| |
| return DID_ERROR; |
| } |
| |
| module_init(esas2r_init); |
| module_exit(esas2r_exit); |