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[SCSI] qla1280: interupt posting for irq disabling/enabling 

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Thiemo Seufer <ths@linux-mips.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Christoph Hellwig 2005-07-04 17:48:19 +02:00 committed by James Bottomley
parent a6c42741ac
commit 8af50dcd22
1 changed files with 20 additions and 37 deletions
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57
drivers/scsi/qla1280.c
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@ -1265,6 +1265,22 @@ qla1280_biosparam_old(Disk * disk, kdev_t dev, int geom[])
return qla1280_biosparam(disk->device, NULL, disk->capacity, geom); return qla1280_biosparam(disk->device, NULL, disk->capacity, geom);
} }
#endif #endif
/* disable risc and host interrupts */
static inline void
qla1280_disable_intrs(struct scsi_qla_host *ha)
{
WRT_REG_WORD(&ha->iobase->ictrl, 0);
RD_REG_WORD(&ha->iobase->ictrl); /* PCI Posted Write flush */
}
/* enable risc and host interrupts */
static inline void
qla1280_enable_intrs(struct scsi_qla_host *ha)
{
WRT_REG_WORD(&ha->iobase->ictrl, (ISP_EN_INT | ISP_EN_RISC));
RD_REG_WORD(&ha->iobase->ictrl); /* PCI Posted Write flush */
}
/************************************************************************** /**************************************************************************
* qla1280_intr_handler * qla1280_intr_handler
@ -1286,7 +1302,7 @@ qla1280_intr_handler(int irq, void *dev_id, struct pt_regs *regs)
ha->isr_count++; ha->isr_count++;
reg = ha->iobase; reg = ha->iobase;
WRT_REG_WORD(&reg->ictrl, 0); /* disable our interrupt. */ qla1280_disable_intrs(ha);
data = qla1280_debounce_register(&reg->istatus); data = qla1280_debounce_register(&reg->istatus);
/* Check for pending interrupts. */ /* Check for pending interrupts. */
@ -1299,8 +1315,7 @@ qla1280_intr_handler(int irq, void *dev_id, struct pt_regs *regs)
spin_unlock(HOST_LOCK); spin_unlock(HOST_LOCK);
/* enable our interrupt. */ qla1280_enable_intrs(ha);
WRT_REG_WORD(&reg->ictrl, (ISP_EN_INT | ISP_EN_RISC));
LEAVE_INTR("qla1280_intr_handler"); LEAVE_INTR("qla1280_intr_handler");
return IRQ_RETVAL(handled); return IRQ_RETVAL(handled);
@ -1613,38 +1628,6 @@ qla1280_return_status(struct response * sts, struct scsi_cmnd *cp)
/* QLogic ISP1280 Hardware Support Functions. */ /* QLogic ISP1280 Hardware Support Functions. */
/****************************************************************************/ /****************************************************************************/
/*
* qla2100_enable_intrs
* qla2100_disable_intrs
*
* Input:
* ha = adapter block pointer.
*
* Returns:
* None
*/
static inline void
qla1280_enable_intrs(struct scsi_qla_host *ha)
{
struct device_reg __iomem *reg;
reg = ha->iobase;
/* enable risc and host interrupts */
WRT_REG_WORD(&reg->ictrl, (ISP_EN_INT | ISP_EN_RISC));
RD_REG_WORD(&reg->ictrl); /* PCI Posted Write flush */
}
static inline void
qla1280_disable_intrs(struct scsi_qla_host *ha)
{
struct device_reg __iomem *reg;
reg = ha->iobase;
/* disable risc and host interrupts */
WRT_REG_WORD(&reg->ictrl, 0);
RD_REG_WORD(&reg->ictrl); /* PCI Posted Write flush */
}
/* /*
* qla1280_initialize_adapter * qla1280_initialize_adapter
* Initialize board. * Initialize board.
@ -4751,7 +4734,7 @@ qla1280_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
#if LINUX_VERSION_CODE >= 0x020600 #if LINUX_VERSION_CODE >= 0x020600
error_disable_adapter: error_disable_adapter:
WRT_REG_WORD(&ha->iobase->ictrl, 0); qla1280_disable_intrs(ha);
#endif #endif
error_free_irq: error_free_irq:
free_irq(pdev->irq, ha); free_irq(pdev->irq, ha);
@ -4788,7 +4771,7 @@ qla1280_remove_one(struct pci_dev *pdev)
scsi_remove_host(host); scsi_remove_host(host);
#endif #endif
WRT_REG_WORD(&ha->iobase->ictrl, 0); qla1280_disable_intrs(ha);
free_irq(pdev->irq, ha); free_irq(pdev->irq, ha);