[SCSI] qla2xxx: Generalize srb structure usage.

Lay groundwork for adding alternative asynchronous operations by
generalize and extending the SRB structure.  This allows for
follow-on patches to add support for:

- Asynchronous logins.
- ELS/CT passthru requests.
- Loopback requests.
- Non-blocking mailbox commands (ABTS, Task Management, etc).

Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index 68ab28c..9eb7be6 100644 (file)
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -189,6 +189,7 @@ struct req_que;
  */
 typedef struct srb {
        struct fc_port *fcport;
+       uint32_t handle;
 
        struct scsi_cmnd *cmd;          /* Linux SCSI command pkt */
 
@@ -196,6 +197,8 @@ typedef struct srb {
 
        uint32_t request_sense_length;
        uint8_t *request_sense_ptr;
+
+       void *ctx;
 } srb_t;
 
 /*

diff --git a/drivers/scsi/qla2xxx/qla_iocb.c b/drivers/scsi/qla2xxx/qla_iocb.c
index c0ba370..d37554e 100644 (file)
--- a/drivers/scsi/qla2xxx/qla_iocb.c
+++ b/drivers/scsi/qla2xxx/qla_iocb.c
@@ -350,6 +350,7 @@ qla2x00_start_scsi(srb_t *sp)
        /* Build command packet */
        req->current_outstanding_cmd = handle;
        req->outstanding_cmds[handle] = sp;
+       sp->handle = handle;
        sp->cmd->host_scribble = (unsigned char *)(unsigned long)handle;
        req->cnt -= req_cnt;
 
@@ -778,6 +779,7 @@ qla24xx_start_scsi(srb_t *sp)
        /* Build command packet. */
        req->current_outstanding_cmd = handle;
        req->outstanding_cmds[handle] = sp;
+       sp->handle = handle;
        sp->cmd->host_scribble = (unsigned char *)(unsigned long)handle;
        req->cnt -= req_cnt;
 

diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index d7b2713..b6c088c 100644 (file)
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -473,6 +473,7 @@ qla2x00_get_new_sp(scsi_qla_host_t *vha, fc_port_t *fcport,
        sp->flags = 0;
        CMD_SP(cmd) = (void *)sp;
        cmd->scsi_done = done;
+       sp->ctx = NULL;
 
        return sp;
 }
@@ -709,6 +710,8 @@ qla2x00_abort_fcport_cmds(fc_port_t *fcport)
                        continue;
                if (sp->fcport != fcport)
                        continue;
+               if (sp->ctx)
+                       continue;
 
                spin_unlock_irqrestore(&ha->hardware_lock, flags);
                if (ha->isp_ops->abort_command(sp)) {
@@ -794,7 +797,8 @@ qla2xxx_eh_abort(struct scsi_cmnd *cmd)
 
                if (sp == NULL)
                        continue;
-
+               if (sp->ctx)
+                       continue;
                if (sp->cmd != cmd)
                        continue;
 
@@ -859,7 +863,8 @@ qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *vha, unsigned int t,
                sp = req->outstanding_cmds[cnt];
                if (!sp)
                        continue;
-
+               if (sp->ctx)
+                       continue;
                if (vha->vp_idx != sp->fcport->vha->vp_idx)
                        continue;
                match = 0;
@@ -2986,6 +2991,8 @@ qla2x00_timer(scsi_qla_host_t *vha)
                                        sp = req->outstanding_cmds[index];
                                        if (!sp)
                                                continue;
+                                       if (sp->ctx)
+                                               continue;
                                        sfcp = sp->fcport;
                                        if (!(sfcp->flags & FCF_TAPE_PRESENT))
                                                continue;