summaryrefslogtreecommitdiffstats
path: root/drivers/scsi/isci/init.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/scsi/isci/init.c')
-rw-r--r--drivers/scsi/isci/init.c199
1 files changed, 182 insertions, 17 deletions
diff --git a/drivers/scsi/isci/init.c b/drivers/scsi/isci/init.c
index 5137db5a5d85..eda43851cc98 100644
--- a/drivers/scsi/isci/init.c
+++ b/drivers/scsi/isci/init.c
@@ -397,38 +397,203 @@ static int isci_setup_interrupts(struct pci_dev *pdev)
return err;
}
+static void isci_user_parameters_get(struct sci_user_parameters *u)
+{
+ int i;
+
+ for (i = 0; i < SCI_MAX_PHYS; i++) {
+ struct sci_phy_user_params *u_phy = &u->phys[i];
+
+ u_phy->max_speed_generation = phy_gen;
+
+ /* we are not exporting these for now */
+ u_phy->align_insertion_frequency = 0x7f;
+ u_phy->in_connection_align_insertion_frequency = 0xff;
+ u_phy->notify_enable_spin_up_insertion_frequency = 0x33;
+ }
+
+ u->stp_inactivity_timeout = stp_inactive_to;
+ u->ssp_inactivity_timeout = ssp_inactive_to;
+ u->stp_max_occupancy_timeout = stp_max_occ_to;
+ u->ssp_max_occupancy_timeout = ssp_max_occ_to;
+ u->no_outbound_task_timeout = no_outbound_task_to;
+ u->max_concurr_spinup = max_concurr_spinup;
+}
+
+static enum sci_status sci_user_parameters_set(struct isci_host *ihost,
+ struct sci_user_parameters *sci_parms)
+{
+ u16 index;
+
+ /*
+ * Validate the user parameters. If they are not legal, then
+ * return a failure.
+ */
+ for (index = 0; index < SCI_MAX_PHYS; index++) {
+ struct sci_phy_user_params *u;
+
+ u = &sci_parms->phys[index];
+
+ if (!((u->max_speed_generation <= SCIC_SDS_PARM_MAX_SPEED) &&
+ (u->max_speed_generation > SCIC_SDS_PARM_NO_SPEED)))
+ return SCI_FAILURE_INVALID_PARAMETER_VALUE;
+
+ if (u->in_connection_align_insertion_frequency < 3)
+ return SCI_FAILURE_INVALID_PARAMETER_VALUE;
+
+ if ((u->in_connection_align_insertion_frequency < 3) ||
+ (u->align_insertion_frequency == 0) ||
+ (u->notify_enable_spin_up_insertion_frequency == 0))
+ return SCI_FAILURE_INVALID_PARAMETER_VALUE;
+ }
+
+ if ((sci_parms->stp_inactivity_timeout == 0) ||
+ (sci_parms->ssp_inactivity_timeout == 0) ||
+ (sci_parms->stp_max_occupancy_timeout == 0) ||
+ (sci_parms->ssp_max_occupancy_timeout == 0) ||
+ (sci_parms->no_outbound_task_timeout == 0))
+ return SCI_FAILURE_INVALID_PARAMETER_VALUE;
+
+ memcpy(&ihost->user_parameters, sci_parms, sizeof(*sci_parms));
+
+ return SCI_SUCCESS;
+}
+
+static void sci_oem_defaults(struct isci_host *ihost)
+{
+ /* these defaults are overridden by the platform / firmware */
+ struct sci_user_parameters *user = &ihost->user_parameters;
+ struct sci_oem_params *oem = &ihost->oem_parameters;
+ int i;
+
+ /* Default to APC mode. */
+ oem->controller.mode_type = SCIC_PORT_AUTOMATIC_CONFIGURATION_MODE;
+
+ /* Default to APC mode. */
+ oem->controller.max_concurr_spin_up = 1;
+
+ /* Default to no SSC operation. */
+ oem->controller.do_enable_ssc = false;
+
+ /* Default to short cables on all phys. */
+ oem->controller.cable_selection_mask = 0;
+
+ /* Initialize all of the port parameter information to narrow ports. */
+ for (i = 0; i < SCI_MAX_PORTS; i++)
+ oem->ports[i].phy_mask = 0;
+
+ /* Initialize all of the phy parameter information. */
+ for (i = 0; i < SCI_MAX_PHYS; i++) {
+ /* Default to 3G (i.e. Gen 2). */
+ user->phys[i].max_speed_generation = SCIC_SDS_PARM_GEN2_SPEED;
+
+ /* the frequencies cannot be 0 */
+ user->phys[i].align_insertion_frequency = 0x7f;
+ user->phys[i].in_connection_align_insertion_frequency = 0xff;
+ user->phys[i].notify_enable_spin_up_insertion_frequency = 0x33;
+
+ /* Previous Vitesse based expanders had a arbitration issue that
+ * is worked around by having the upper 32-bits of SAS address
+ * with a value greater then the Vitesse company identifier.
+ * Hence, usage of 0x5FCFFFFF.
+ */
+ oem->phys[i].sas_address.low = 0x1 + ihost->id;
+ oem->phys[i].sas_address.high = 0x5FCFFFFF;
+ }
+
+ user->stp_inactivity_timeout = 5;
+ user->ssp_inactivity_timeout = 5;
+ user->stp_max_occupancy_timeout = 5;
+ user->ssp_max_occupancy_timeout = 20;
+ user->no_outbound_task_timeout = 2;
+}
+
static struct isci_host *isci_host_alloc(struct pci_dev *pdev, int id)
{
- struct isci_host *isci_host;
+ struct isci_orom *orom = to_pci_info(pdev)->orom;
+ struct sci_user_parameters sci_user_params;
+ u8 oem_version = ISCI_ROM_VER_1_0;
+ struct isci_host *ihost;
struct Scsi_Host *shost;
- int err;
+ int err, i;
- isci_host = devm_kzalloc(&pdev->dev, sizeof(*isci_host), GFP_KERNEL);
- if (!isci_host)
+ ihost = devm_kzalloc(&pdev->dev, sizeof(*ihost), GFP_KERNEL);
+ if (!ihost)
+ return NULL;
+
+ ihost->pdev = pdev;
+ ihost->id = id;
+ spin_lock_init(&ihost->scic_lock);
+ init_waitqueue_head(&ihost->eventq);
+ ihost->sas_ha.dev = &ihost->pdev->dev;
+ ihost->sas_ha.lldd_ha = ihost;
+ tasklet_init(&ihost->completion_tasklet,
+ isci_host_completion_routine, (unsigned long)ihost);
+
+ /* validate module parameters */
+ /* TODO: kill struct sci_user_parameters and reference directly */
+ sci_oem_defaults(ihost);
+ isci_user_parameters_get(&sci_user_params);
+ if (sci_user_parameters_set(ihost, &sci_user_params)) {
+ dev_warn(&pdev->dev,
+ "%s: sci_user_parameters_set failed\n", __func__);
+ return NULL;
+ }
+
+ /* sanity check platform (or 'firmware') oem parameters */
+ if (orom) {
+ if (id < 0 || id >= SCI_MAX_CONTROLLERS || id > orom->hdr.num_elements) {
+ dev_warn(&pdev->dev, "parsing firmware oem parameters failed\n");
+ return NULL;
+ }
+ ihost->oem_parameters = orom->ctrl[id];
+ oem_version = orom->hdr.version;
+ }
+
+ /* validate oem parameters (platform, firmware, or built-in defaults) */
+ if (sci_oem_parameters_validate(&ihost->oem_parameters, oem_version)) {
+ dev_warn(&pdev->dev, "oem parameter validation failed\n");
return NULL;
+ }
+
+ INIT_LIST_HEAD(&ihost->requests_to_complete);
+ INIT_LIST_HEAD(&ihost->requests_to_errorback);
+ for (i = 0; i < SCI_MAX_PORTS; i++) {
+ struct isci_port *iport = &ihost->ports[i];
+
+ INIT_LIST_HEAD(&iport->remote_dev_list);
+ iport->isci_host = ihost;
+ }
- isci_host->pdev = pdev;
- isci_host->id = id;
+ for (i = 0; i < SCI_MAX_PHYS; i++)
+ isci_phy_init(&ihost->phys[i], ihost, i);
+
+ for (i = 0; i < SCI_MAX_REMOTE_DEVICES; i++) {
+ struct isci_remote_device *idev = &ihost->devices[i];
+
+ INIT_LIST_HEAD(&idev->reqs_in_process);
+ INIT_LIST_HEAD(&idev->node);
+ }
shost = scsi_host_alloc(&isci_sht, sizeof(void *));
if (!shost)
return NULL;
- isci_host->shost = shost;
+ ihost->shost = shost;
dev_info(&pdev->dev, "%sSCU controller %d: phy 3-0 cables: "
"{%s, %s, %s, %s}\n",
- (is_cable_select_overridden() ? "* " : ""), isci_host->id,
- lookup_cable_names(decode_cable_selection(isci_host, 3)),
- lookup_cable_names(decode_cable_selection(isci_host, 2)),
- lookup_cable_names(decode_cable_selection(isci_host, 1)),
- lookup_cable_names(decode_cable_selection(isci_host, 0)));
+ (is_cable_select_overridden() ? "* " : ""), ihost->id,
+ lookup_cable_names(decode_cable_selection(ihost, 3)),
+ lookup_cable_names(decode_cable_selection(ihost, 2)),
+ lookup_cable_names(decode_cable_selection(ihost, 1)),
+ lookup_cable_names(decode_cable_selection(ihost, 0)));
- err = isci_host_init(isci_host);
+ err = isci_host_init(ihost);
if (err)
goto err_shost;
- SHOST_TO_SAS_HA(shost) = &isci_host->sas_ha;
- isci_host->sas_ha.core.shost = shost;
+ SHOST_TO_SAS_HA(shost) = &ihost->sas_ha;
+ ihost->sas_ha.core.shost = shost;
shost->transportt = isci_transport_template;
shost->max_id = ~0;
@@ -439,11 +604,11 @@ static struct isci_host *isci_host_alloc(struct pci_dev *pdev, int id)
if (err)
goto err_shost;
- err = isci_register_sas_ha(isci_host);
+ err = isci_register_sas_ha(ihost);
if (err)
goto err_shost_remove;
- return isci_host;
+ return ihost;
err_shost_remove:
scsi_remove_host(shost);
OpenPOWER on IntegriCloud