Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (276 commits)
  [SCSI] zfcp: Trigger logging in the FCP channel on qdio error conditions
  [SCSI] zfcp: Introduce experimental support for DIF/DIX
  [SCSI] zfcp: Enable data division support for FCP devices
  [SCSI] zfcp: Prevent access on uninitialized memory.
  [SCSI] zfcp: Post events through FC transport class
  [SCSI] zfcp: Cleanup QDIO attachment and improve processing.
  [SCSI] zfcp: Cleanup function parameters for sbal value.
  [SCSI] zfcp: Use correct width for timer_interval field
  [SCSI] zfcp: Remove SCSI device when removing unit
  [SCSI] zfcp: Use memdup_user and kstrdup
  [SCSI] zfcp: Fix retry after failed "open port" erp action
  [SCSI] zfcp: Fail erp after timeout
  [SCSI] zfcp: Use forced_reopen in terminate_rport_io callback
  [SCSI] zfcp: Register SCSI devices after successful fc_remote_port_add
  [SCSI] zfcp: Do not try "forced close" when port is already closed
  [SCSI] zfcp: Do not unblock rport from REOPEN_PORT_FORCED
  [SCSI] sd: add support for runtime PM
  [SCSI] implement runtime Power Management
  [SCSI] convert to the new PM framework
  [SCSI] Unify SAM_ and SAM_STAT_ macros
  ...

1 files changed, 67 insertions, 42 deletions

diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index be1a8fcbb1f..ff2172da7c1 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -1,6 +1,6 @@
 /*
  * QLogic Fibre Channel HBA Driver
- * Copyright (c)  2003-2008 QLogic Corporation
+ * Copyright (c)  2003-2010 QLogic Corporation
  *
  * See LICENSE.qla2xxx for copyright and licensing details.
  */
@@ -140,7 +140,7 @@ MODULE_PARM_DESC(ql2xetsenable,
 		"Enables firmware ETS burst."
 		"Default is 0 - skip ETS enablement.");
 
-int ql2xdbwr;
+int ql2xdbwr = 1;
 module_param(ql2xdbwr, int, S_IRUGO|S_IRUSR);
 MODULE_PARM_DESC(ql2xdbwr,
 	"Option to specify scheme for request queue posting\n"
@@ -517,6 +517,7 @@ qla2x00_get_new_sp(scsi_qla_host_t *vha, fc_port_t *fcport,
 	if (!sp)
 		return sp;
 
+	atomic_set(&sp->ref_count, 1);
 	sp->fcport = fcport;
 	sp->cmd = cmd;
 	sp->flags = 0;
@@ -700,7 +701,7 @@ qla2x00_wait_for_hba_online(scsi_qla_host_t *vha)
  *    Success (Adapter is online/no flash ops) : 0
  *    Failed  (Adapter is offline/disabled/flash ops in progress) : 1
  */
-int
+static int
 qla2x00_wait_for_reset_ready(scsi_qla_host_t *vha)
 {
 	int		return_status;
@@ -797,6 +798,12 @@ qla2x00_wait_for_loop_ready(scsi_qla_host_t *vha)
 	return (return_status);
 }
 
+static void
+sp_get(struct srb *sp)
+{
+	atomic_inc(&sp->ref_count);
+}
+
 /**************************************************************************
 * qla2xxx_eh_abort
 *
@@ -825,6 +832,7 @@ qla2xxx_eh_abort(struct scsi_cmnd *cmd)
 	struct qla_hw_data *ha = vha->hw;
 	struct req_que *req = vha->req;
 	srb_t *spt;
+	int got_ref = 0;
 
 	fc_block_scsi_eh(cmd);
 
@@ -856,6 +864,10 @@ qla2xxx_eh_abort(struct scsi_cmnd *cmd)
 		DEBUG2(printk("%s(%ld): aborting sp %p from RISC."
 		" pid=%ld.\n", __func__, vha->host_no, sp, serial));
 
+		/* Get a reference to the sp and drop the lock.*/
+		sp_get(sp);
+		got_ref++;
+
 		spin_unlock_irqrestore(&ha->hardware_lock, flags);
 		if (ha->isp_ops->abort_command(sp)) {
 			DEBUG2(printk("%s(%ld): abort_command "
@@ -881,6 +893,9 @@ qla2xxx_eh_abort(struct scsi_cmnd *cmd)
 		}
 	}
 
+	if (got_ref)
+		qla2x00_sp_compl(ha, sp);
+
 	qla_printk(KERN_INFO, ha,
 	    "scsi(%ld:%d:%d): Abort command issued -- %d %lx %x.\n",
 	    vha->host_no, id, lun, wait, serial, ret);
@@ -888,24 +903,17 @@ qla2xxx_eh_abort(struct scsi_cmnd *cmd)
 	return ret;
 }
 
-enum nexus_wait_type {
-	WAIT_HOST = 0,
-	WAIT_TARGET,
-	WAIT_LUN,
-};
-
-static int
+int
 qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *vha, unsigned int t,
-	unsigned int l, srb_t *sp, enum nexus_wait_type type)
+	unsigned int l, enum nexus_wait_type type)
 {
 	int cnt, match, status;
 	unsigned long flags;
 	struct qla_hw_data *ha = vha->hw;
 	struct req_que *req;
+	srb_t *sp;
 
 	status = QLA_SUCCESS;
-	if (!sp)
-		return status;
 
 	spin_lock_irqsave(&ha->hardware_lock, flags);
 	req = vha->req;
@@ -943,24 +951,6 @@ qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *vha, unsigned int t,
 	return status;
 }
 
-void qla82xx_wait_for_pending_commands(scsi_qla_host_t *vha)
-{
-	int cnt;
-	srb_t *sp;
-	struct req_que *req = vha->req;
-
-	DEBUG2(qla_printk(KERN_INFO, vha->hw,
-		"Waiting for pending commands\n"));
-	for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
-		sp = req->outstanding_cmds[cnt];
-		if (qla2x00_eh_wait_for_pending_commands(vha, 0, 0,
-			sp, WAIT_HOST) == QLA_SUCCESS) {
-			DEBUG2(qla_printk(KERN_INFO, vha->hw,
-				"Done wait for pending commands\n"));
-		}
-	}
-}
-
 static char *reset_errors[] = {
 	"HBA not online",
 	"HBA not ready",
@@ -996,7 +986,7 @@ __qla2xxx_eh_generic_reset(char *name, enum nexus_wait_type type,
 		goto eh_reset_failed;
 	err = 3;
 	if (qla2x00_eh_wait_for_pending_commands(vha, cmd->device->id,
-	    cmd->device->lun, (srb_t *) CMD_SP(cmd), type) != QLA_SUCCESS)
+	    cmd->device->lun, type) != QLA_SUCCESS)
 		goto eh_reset_failed;
 
 	qla_printk(KERN_INFO, vha->hw, "scsi(%ld:%d:%d): %s RESET SUCCEEDED.\n",
@@ -1004,7 +994,7 @@ __qla2xxx_eh_generic_reset(char *name, enum nexus_wait_type type,
 
 	return SUCCESS;
 
- eh_reset_failed:
+eh_reset_failed:
 	qla_printk(KERN_INFO, vha->hw, "scsi(%ld:%d:%d): %s RESET FAILED: %s.\n"
 	    , vha->host_no, cmd->device->id, cmd->device->lun, name,
 	    reset_errors[err]);
@@ -1054,7 +1044,6 @@ qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
 	int ret = FAILED;
 	unsigned int id, lun;
 	unsigned long serial;
-	srb_t *sp = (srb_t *) CMD_SP(cmd);
 
 	fc_block_scsi_eh(cmd);
 
@@ -1081,7 +1070,7 @@ qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
 		goto eh_bus_reset_done;
 
 	/* Flush outstanding commands. */
-	if (qla2x00_eh_wait_for_pending_commands(vha, 0, 0, sp, WAIT_HOST) !=
+	if (qla2x00_eh_wait_for_pending_commands(vha, 0, 0, WAIT_HOST) !=
 	    QLA_SUCCESS)
 		ret = FAILED;
 
@@ -1116,7 +1105,6 @@ qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
 	int ret = FAILED;
 	unsigned int id, lun;
 	unsigned long serial;
-	srb_t *sp = (srb_t *) CMD_SP(cmd);
 	scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
 
 	fc_block_scsi_eh(cmd);
@@ -1171,7 +1159,7 @@ qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
 	}
 
 	/* Waiting for command to be returned to OS.*/
-	if (qla2x00_eh_wait_for_pending_commands(vha, 0, 0, sp, WAIT_HOST) ==
+	if (qla2x00_eh_wait_for_pending_commands(vha, 0, 0, WAIT_HOST) ==
 		QLA_SUCCESS)
 		ret = SUCCESS;
 
@@ -1662,7 +1650,7 @@ static struct isp_operations qla81xx_isp_ops = {
 	.read_optrom		= qla25xx_read_optrom_data,
 	.write_optrom		= qla24xx_write_optrom_data,
 	.get_flash_version	= qla24xx_get_flash_version,
-	.start_scsi		= qla24xx_start_scsi,
+	.start_scsi		= qla24xx_dif_start_scsi,
 	.abort_isp		= qla2x00_abort_isp,
 };
 
@@ -2113,6 +2101,7 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
 	init_completion(&ha->mbx_cmd_comp);
 	complete(&ha->mbx_cmd_comp);
 	init_completion(&ha->mbx_intr_comp);
+	init_completion(&ha->dcbx_comp);
 
 	set_bit(0, (unsigned long *) ha->vp_idx_map);
 
@@ -2158,7 +2147,10 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
 	host->this_id = 255;
 	host->cmd_per_lun = 3;
 	host->unique_id = host->host_no;
-	host->max_cmd_len = MAX_CMDSZ;
+	if ((IS_QLA25XX(ha) || IS_QLA81XX(ha)) && ql2xenabledif)
+		host->max_cmd_len = 32;
+	else
+		host->max_cmd_len = MAX_CMDSZ;
 	host->max_channel = MAX_BUSES - 1;
 	host->max_lun = MAX_LUNS;
 	host->transportt = qla2xxx_transport_template;
@@ -2258,7 +2250,7 @@ skip_dpc:
 	DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n",
 	    base_vha->host_no, ha));
 
-	if (IS_QLA25XX(ha) && ql2xenabledif) {
+	if ((IS_QLA25XX(ha) || IS_QLA81XX(ha)) && ql2xenabledif) {
 		if (ha->fw_attributes & BIT_4) {
 			base_vha->flags.difdix_supported = 1;
 			DEBUG18(qla_printk(KERN_INFO, ha,
@@ -2266,8 +2258,10 @@ skip_dpc:
 			    " protection.\n"));
 			scsi_host_set_prot(host,
 			    SHOST_DIF_TYPE1_PROTECTION
+			    | SHOST_DIF_TYPE2_PROTECTION
 			    | SHOST_DIF_TYPE3_PROTECTION
 			    | SHOST_DIX_TYPE1_PROTECTION
+			    | SHOST_DIX_TYPE2_PROTECTION
 			    | SHOST_DIX_TYPE3_PROTECTION);
 			scsi_host_set_guard(host, SHOST_DIX_GUARD_CRC);
 		} else
@@ -2402,6 +2396,10 @@ qla2x00_remove_one(struct pci_dev *pdev)
 	scsi_host_put(base_vha->host);
 
 	if (IS_QLA82XX(ha)) {
+		qla82xx_idc_lock(ha);
+		qla82xx_clear_drv_active(ha);
+		qla82xx_idc_unlock(ha);
+
 		iounmap((device_reg_t __iomem *)ha->nx_pcibase);
 		if (!ql2xdbwr)
 			iounmap((device_reg_t __iomem *)ha->nxdb_wr_ptr);
@@ -2467,11 +2465,24 @@ qla2x00_free_device(scsi_qla_host_t *vha)
 
 	qla2x00_free_irqs(vha);
 
+	qla2x00_free_fcports(vha);
+
 	qla2x00_mem_free(ha);
 
 	qla2x00_free_queues(ha);
 }
 
+void qla2x00_free_fcports(struct scsi_qla_host *vha)
+{
+	fc_port_t *fcport, *tfcport;
+
+	list_for_each_entry_safe(fcport, tfcport, &vha->vp_fcports, list) {
+		list_del(&fcport->list);
+		kfree(fcport);
+		fcport = NULL;
+	}
+}
+
 static inline void
 qla2x00_schedule_rport_del(struct scsi_qla_host *vha, fc_port_t *fcport,
     int defer)
@@ -3463,8 +3474,8 @@ qla2x00_sp_free_dma(srb_t *sp)
 	CMD_SP(cmd) = NULL;
 }
 
-void
-qla2x00_sp_compl(struct qla_hw_data *ha, srb_t *sp)
+static void
+qla2x00_sp_final_compl(struct qla_hw_data *ha, srb_t *sp)
 {
 	struct scsi_cmnd *cmd = sp->cmd;
 
@@ -3485,6 +3496,20 @@ qla2x00_sp_compl(struct qla_hw_data *ha, srb_t *sp)
 	cmd->scsi_done(cmd);
 }
 
+void
+qla2x00_sp_compl(struct qla_hw_data *ha, srb_t *sp)
+{
+	if (atomic_read(&sp->ref_count) == 0) {
+		DEBUG2(qla_printk(KERN_WARNING, ha,
+		    "SP reference-count to ZERO -- sp=%p\n", sp));
+		DEBUG2(BUG());
+		return;
+	}
+	if (!atomic_dec_and_test(&sp->ref_count))
+		return;
+	qla2x00_sp_final_compl(ha, sp);
+}
+
 /**************************************************************************
 *   qla2x00_timer
 *