[PATCH v4 02/10] SCSI: esas2r: Add main file

Bradley Grove
2013-08-23T14:36:09Z

drivers/scsi/esas2r/esas2r_main.c | 2032 +++++++++++++++++++++++++++++++++++++
1 file changed, 2032 insertions(+)
create mode 100644 drivers/scsi/esas2r/esas2r_main.c

diff --git a/drivers/scsi/esas2r/esas2r_main.c b/drivers/scsi/esas2r/esas2r_main.c
new file mode 100644
index 0000000..4abf127
--- /dev/null
+++ b/drivers/scsi/esas2r/esas2r_main.c
@@ -0,0 +1,2032 @@
+/*
+ * 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,
+ .slave_configure = esas2r_slave_configure,
+ .slave_alloc = esas2r_slave_alloc,
+ .slave_destroy = esas2r_slave_destroy,
+ .change_queue_depth = esas2r_change_queue_depth,
+ .change_queue_type = esas2r_change_queue_type,
+ .max_sectors = 0xFFFF,
+};
+
+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_device_enable() 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_puts(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(a->flags & AF_DEGRADED_MODE)) {
+ 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 (a->flags & AF_DEGRADED_MODE) {
+ cmd->result = DID_ABORT << 16;
+
+ scsi_set_resid(cmd, 0);
+
+ cmd->scsi_done(cmd);
+
+ return 0;
+ }
+
+ 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 (a->flags & AF_DEGRADED_MODE)
+ 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 (a->flags & AF_OS_RESET) {
+ msleep(10);
+
+ if (a->flags & AF_DEGRADED_MODE)
+ return FAILED;
+ }
+
+ if (a->flags & AF_DEGRADED_MODE)
+ 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 (a->flags & AF_DEGRADED_MODE)
+ 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 (a->flags & AF_DEGRADED_MODE)
+ 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);
+}
+
+int esas2r_change_queue_depth(struct scsi_device *dev, int depth, int reason)
+{
+ esas2r_log(ESAS2R_LOG_INFO, "change_queue_depth %p, %d", dev, depth);
+
+ scsi_adjust_queue_depth(dev, scsi_get_tag_type(dev), depth);
+
+ return dev->queue_depth;
+}
+
+int esas2r_change_queue_type(struct scsi_device *dev, int type)
+{
+ esas2r_log(ESAS2R_LOG_INFO, "change_queue_type %p, %d", dev, type);
+
+ if (dev->tagged_supported) {
+ scsi_set_tag_type(dev, type);
+
+ if (type)
+ scsi_activate_tcq(dev, dev->queue_depth);
+ else
+ scsi_deactivate_tcq(dev, dev->queue_depth);
+ } else {
+ type = 0;
+ }
+
+ return type;
+}
+
+int esas2r_slave_alloc(struct scsi_device *dev)
+{
+ return 0;
+}
+
+int esas2r_slave_configure(struct scsi_device *dev)
+{
+ esas2r_log_dev(ESAS2R_LOG_INFO, &(dev->sdev_gendev),
+ "esas2r_slave_configure()");
+
+ if (dev->tagged_supported) {
+ scsi_set_tag_type(dev, MSG_SIMPLE_TAG);
+ scsi_activate_tcq(dev, cmd_per_lun);
+ } else {
+ scsi_set_tag_type(dev, 0);
+ scsi_deactivate_tcq(dev, cmd_per_lun);
+ }
+
+ return 0;
+}
+
+void esas2r_slave_destroy(struct scsi_device *dev)
+{
+ esas2r_log_dev(ESAS2R_LOG_INFO, &(dev->sdev_gendev),
+ "esas2r_slave_destroy()");
+}
+
+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(a->flags2 & AF2_TIMER_TICK)) {
+ esas2r_lock_clear_flags(&a->flags2, AF2_TIMER_TICK);
+ esas2r_timer_tick(a);
+ }
+
+ if (likely(a->flags2 & AF2_INT_PENDING)) {
+ esas2r_lock_clear_flags(&a->flags2, AF2_INT_PENDING);
+ esas2r_adapter_interrupt(a);
+ }
+
+ if (esas2r_is_tasklet_pending(a))
+ esas2r_do_tasklet_tasks(a);
+
+ if (esas2r_is_tasklet_pending(a)
+ || (a->flags2 & AF2_INT_PENDING)
+ || (a->flags2 & AF2_TIMER_TICK)) {
+ esas2r_lock_clear_flags(&a->flags, AF_TASKLET_SCHEDULED);
+ esas2r_schedule_tasklet(a);
+ } else {
+ esas2r_lock_clear_flags(&a->flags, AF_TASKLET_SCHEDULED);
+ }
+}
+
+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;
+
+ esas2r_lock_set_flags(&a->flags2, AF2_TIMER_TICK);
+
+ 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);
--
1.8.1.4