From 0b05a1f0d68bf4714c37aa7843c31df1866b017a Mon Sep 17 00:00:00 2001 From: Marcus Barrow Date: Thu, 17 Jan 2008 09:02:13 -0800 Subject: [PATCH] [SCSI] qla2xxx: Use completion routines. Instead of abusing the semaphore interfaces for mailbox command completions. Additional cleanups and Signed-off-by: Andrew Vasquez Signed-off-by: James Bottomley --- drivers/scsi/qla2xxx/qla_def.h | 4 ++-- drivers/scsi/qla2xxx/qla_gbl.h | 2 -- drivers/scsi/qla2xxx/qla_isr.c | 8 +++---- drivers/scsi/qla2xxx/qla_mbx.c | 44 ++++------------------------------ drivers/scsi/qla2xxx/qla_mid.c | 5 ++-- drivers/scsi/qla2xxx/qla_os.c | 22 +++-------------- 6 files changed, 16 insertions(+), 69 deletions(-) diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h index d0b78af60f7b..144f6d04f3d1 100644 --- a/drivers/scsi/qla2xxx/qla_def.h +++ b/drivers/scsi/qla2xxx/qla_def.h @@ -2413,9 +2413,9 @@ typedef struct scsi_qla_host { #define MBX_INTR_WAIT 2 #define MBX_UPDATE_FLASH_ACTIVE 3 - struct semaphore mbx_cmd_sem; /* Serialialize mbx access */ struct semaphore vport_sem; /* Virtual port synchronization */ - struct semaphore mbx_intr_sem; /* Used for completion notification */ + struct completion mbx_cmd_comp; /* Serialize mbx access */ + struct completion mbx_intr_comp; /* Used for completion notification */ uint32_t mbx_flags; #define MBX_IN_PROGRESS BIT_0 diff --git a/drivers/scsi/qla2xxx/qla_gbl.h b/drivers/scsi/qla2xxx/qla_gbl.h index f6917b94701e..fa4455f48f1d 100644 --- a/drivers/scsi/qla2xxx/qla_gbl.h +++ b/drivers/scsi/qla2xxx/qla_gbl.h @@ -105,8 +105,6 @@ extern char *qla2x00_get_fw_version_str(struct scsi_qla_host *, char *); extern void qla2x00_mark_device_lost(scsi_qla_host_t *, fc_port_t *, int, int); extern void qla2x00_mark_all_devices_lost(scsi_qla_host_t *, int); -extern int qla2x00_down_timeout(struct semaphore *, unsigned long); - extern struct fw_blob *qla2x00_request_firmware(scsi_qla_host_t *); extern int qla2x00_wait_for_hba_online(scsi_qla_host_t *); diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c index 22216fe76059..642a0c3f09c6 100644 --- a/drivers/scsi/qla2xxx/qla_isr.c +++ b/drivers/scsi/qla2xxx/qla_isr.c @@ -104,7 +104,7 @@ qla2100_intr_handler(int irq, void *dev_id) if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) && (status & MBX_INTERRUPT) && ha->flags.mbox_int) { set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags); - up(&ha->mbx_intr_sem); + complete(&ha->mbx_intr_comp); } return (IRQ_HANDLED); @@ -216,7 +216,7 @@ qla2300_intr_handler(int irq, void *dev_id) if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) && (status & MBX_INTERRUPT) && ha->flags.mbox_int) { set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags); - up(&ha->mbx_intr_sem); + complete(&ha->mbx_intr_comp); } return (IRQ_HANDLED); @@ -1597,7 +1597,7 @@ qla24xx_intr_handler(int irq, void *dev_id) if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) && (status & MBX_INTERRUPT) && ha->flags.mbox_int) { set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags); - up(&ha->mbx_intr_sem); + complete(&ha->mbx_intr_comp); } return IRQ_HANDLED; @@ -1734,7 +1734,7 @@ qla24xx_msix_default(int irq, void *dev_id) if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) && (status & MBX_INTERRUPT) && ha->flags.mbox_int) { set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags); - up(&ha->mbx_intr_sem); + complete(&ha->mbx_intr_comp); } return IRQ_HANDLED; diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c index 0fc165288f88..d23d6fcfb225 100644 --- a/drivers/scsi/qla2xxx/qla_mbx.c +++ b/drivers/scsi/qla2xxx/qla_mbx.c @@ -8,19 +8,6 @@ #include -static void -qla2x00_mbx_sem_timeout(unsigned long data) -{ - struct semaphore *sem_ptr = (struct semaphore *)data; - - DEBUG11(printk("qla2x00_sem_timeout: entered.\n")); - - if (sem_ptr != NULL) { - up(sem_ptr); - } - - DEBUG11(printk("qla2x00_mbx_sem_timeout: exiting.\n")); -} /* * qla2x00_mailbox_command @@ -47,7 +34,6 @@ qla2x00_mailbox_command(scsi_qla_host_t *pvha, mbx_cmd_t *mcp) int rval; unsigned long flags = 0; device_reg_t __iomem *reg; - struct timer_list tmp_intr_timer; uint8_t abort_active; uint8_t io_lock_on; uint16_t command; @@ -72,7 +58,8 @@ qla2x00_mailbox_command(scsi_qla_host_t *pvha, mbx_cmd_t *mcp) * non ISP abort time. */ if (!abort_active) { - if (qla2x00_down_timeout(&ha->mbx_cmd_sem, mcp->tov * HZ)) { + if (!wait_for_completion_timeout(&ha->mbx_cmd_comp, + mcp->tov * HZ)) { /* Timeout occurred. Return error. */ DEBUG2_3_11(printk("%s(%ld): cmd access timeout. " "Exiting.\n", __func__, ha->host_no)); @@ -135,22 +122,6 @@ qla2x00_mailbox_command(scsi_qla_host_t *pvha, mbx_cmd_t *mcp) /* Wait for mbx cmd completion until timeout */ if (!abort_active && io_lock_on) { - /* sleep on completion semaphore */ - DEBUG11(printk("%s(%ld): INTERRUPT MODE. Initializing timer.\n", - __func__, ha->host_no)); - - init_timer(&tmp_intr_timer); - tmp_intr_timer.data = (unsigned long)&ha->mbx_intr_sem; - tmp_intr_timer.expires = jiffies + mcp->tov * HZ; - tmp_intr_timer.function = - (void (*)(unsigned long))qla2x00_mbx_sem_timeout; - - DEBUG11(printk("%s(%ld): Adding timer.\n", __func__, - ha->host_no)); - add_timer(&tmp_intr_timer); - - DEBUG11(printk("%s(%ld): going to unlock & sleep. " - "time=0x%lx.\n", __func__, ha->host_no, jiffies)); set_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags); @@ -160,17 +131,10 @@ qla2x00_mailbox_command(scsi_qla_host_t *pvha, mbx_cmd_t *mcp) WRT_REG_WORD(®->isp.hccr, HCCR_SET_HOST_INT); spin_unlock_irqrestore(&ha->hardware_lock, flags); - /* Wait for either the timer to expire - * or the mbox completion interrupt - */ - down(&ha->mbx_intr_sem); + wait_for_completion_timeout(&ha->mbx_intr_comp, mcp->tov * HZ); - DEBUG11(printk("%s(%ld): waking up. time=0x%lx\n", __func__, - ha->host_no, jiffies)); clear_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags); - /* delete the timer */ - del_timer(&tmp_intr_timer); } else { DEBUG3_11(printk("%s(%ld): cmd=%x POLLING MODE.\n", __func__, ha->host_no, command)); @@ -299,7 +263,7 @@ qla2x00_mailbox_command(scsi_qla_host_t *pvha, mbx_cmd_t *mcp) /* Allow next mbx cmd to come in. */ if (!abort_active) - up(&ha->mbx_cmd_sem); + complete(&ha->mbx_cmd_comp); if (rval) { DEBUG2_3_11(printk("%s(%ld): **** FAILED. mbx0=%x, mbx1=%x, " diff --git a/drivers/scsi/qla2xxx/qla_mid.c b/drivers/scsi/qla2xxx/qla_mid.c index 74096aaa693c..325bdab11903 100644 --- a/drivers/scsi/qla2xxx/qla_mid.c +++ b/drivers/scsi/qla2xxx/qla_mid.c @@ -403,8 +403,9 @@ qla24xx_create_vhost(struct fc_vport *fc_vport) } vha->mgmt_svr_loop_id = 10 + vha->vp_idx; - init_MUTEX(&vha->mbx_cmd_sem); - init_MUTEX_LOCKED(&vha->mbx_intr_sem); + init_completion(&vha->mbx_cmd_comp); + complete(&vha->mbx_cmd_comp); + init_completion(&vha->mbx_intr_comp); INIT_LIST_HEAD(&vha->list); INIT_LIST_HEAD(&vha->fcports); diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c index 0a414c0dd580..b9ee56567940 100644 --- a/drivers/scsi/qla2xxx/qla_os.c +++ b/drivers/scsi/qla2xxx/qla_os.c @@ -1692,9 +1692,10 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) /* load the F/W, read paramaters, and init the H/W */ ha->instance = num_hosts; - init_MUTEX(&ha->mbx_cmd_sem); init_MUTEX(&ha->vport_sem); - init_MUTEX_LOCKED(&ha->mbx_intr_sem); + init_completion(&ha->mbx_cmd_comp); + complete(&ha->mbx_cmd_comp); + init_completion(&ha->mbx_intr_comp); INIT_LIST_HEAD(&ha->list); INIT_LIST_HEAD(&ha->fcports); @@ -2739,23 +2740,6 @@ qla2x00_timer(scsi_qla_host_t *ha) qla2x00_restart_timer(ha, WATCH_INTERVAL); } -/* XXX(hch): crude hack to emulate a down_timeout() */ -int -qla2x00_down_timeout(struct semaphore *sema, unsigned long timeout) -{ - const unsigned int step = 100; /* msecs */ - unsigned int iterations = jiffies_to_msecs(timeout)/100; - - do { - if (!down_trylock(sema)) - return 0; - if (msleep_interruptible(step)) - break; - } while (--iterations > 0); - - return -ETIMEDOUT; -} - /* Firmware interface routines. */ #define FW_BLOBS 6 -- 2.30.2