diff options
Diffstat (limited to 'drivers/scsi/qla2xxx/qla_isr.c')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_isr.c | 88 |
1 files changed, 82 insertions, 6 deletions
diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c index eecae9905ece..c4768c4f3990 100644 --- a/drivers/scsi/qla2xxx/qla_isr.c +++ b/drivers/scsi/qla2xxx/qla_isr.c @@ -6,6 +6,7 @@ */ #include "qla_def.h" +#include <linux/delay.h> #include <scsi/scsi_tcq.h> static void qla2x00_mbx_completion(scsi_qla_host_t *, uint16_t); @@ -34,6 +35,7 @@ qla2100_intr_handler(int irq, void *dev_id) int status; unsigned long flags; unsigned long iter; + uint16_t hccr; uint16_t mb[4]; ha = (scsi_qla_host_t *) dev_id; @@ -48,7 +50,23 @@ qla2100_intr_handler(int irq, void *dev_id) spin_lock_irqsave(&ha->hardware_lock, flags); for (iter = 50; iter--; ) { - if ((RD_REG_WORD(®->istatus) & ISR_RISC_INT) == 0) + hccr = RD_REG_WORD(®->hccr); + if (hccr & HCCR_RISC_PAUSE) { + if (pci_channel_offline(ha->pdev)) + break; + + /* + * Issue a "HARD" reset in order for the RISC interrupt + * bit to be cleared. Schedule a big hammmer to get + * out of the RISC PAUSED state. + */ + WRT_REG_WORD(®->hccr, HCCR_RESET_RISC); + RD_REG_WORD(®->hccr); + + ha->isp_ops->fw_dump(ha, 1); + set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); + break; + } else if ((RD_REG_WORD(®->istatus) & ISR_RISC_INT) == 0) break; if (RD_REG_WORD(®->semaphore) & BIT_0) { @@ -127,6 +145,9 @@ qla2300_intr_handler(int irq, void *dev_id) for (iter = 50; iter--; ) { stat = RD_REG_DWORD(®->u.isp2300.host_status); if (stat & HSR_RISC_PAUSED) { + if (pci_channel_offline(ha->pdev)) + break; + hccr = RD_REG_WORD(®->hccr); if (hccr & (BIT_15 | BIT_13 | BIT_11 | BIT_8)) qla_printk(KERN_INFO, ha, "Parity error -- " @@ -1464,6 +1485,52 @@ qla24xx_process_response_queue(struct scsi_qla_host *ha) WRT_REG_DWORD(®->rsp_q_out, ha->rsp_ring_index); } +static void +qla2xxx_check_risc_status(scsi_qla_host_t *ha) +{ + int rval; + uint32_t cnt; + struct device_reg_24xx __iomem *reg = &ha->iobase->isp24; + + if (!IS_QLA25XX(ha)) + return; + + rval = QLA_SUCCESS; + WRT_REG_DWORD(®->iobase_addr, 0x7C00); + RD_REG_DWORD(®->iobase_addr); + WRT_REG_DWORD(®->iobase_window, 0x0001); + for (cnt = 10000; (RD_REG_DWORD(®->iobase_window) & BIT_0) == 0 && + rval == QLA_SUCCESS; cnt--) { + if (cnt) { + WRT_REG_DWORD(®->iobase_window, 0x0001); + udelay(10); + } else + rval = QLA_FUNCTION_TIMEOUT; + } + if (rval == QLA_SUCCESS) + goto next_test; + + WRT_REG_DWORD(®->iobase_window, 0x0003); + for (cnt = 100; (RD_REG_DWORD(®->iobase_window) & BIT_0) == 0 && + rval == QLA_SUCCESS; cnt--) { + if (cnt) { + WRT_REG_DWORD(®->iobase_window, 0x0003); + udelay(10); + } else + rval = QLA_FUNCTION_TIMEOUT; + } + if (rval != QLA_SUCCESS) + goto done; + +next_test: + if (RD_REG_DWORD(®->iobase_c8) & BIT_3) + qla_printk(KERN_INFO, ha, "Additional code -- 0x55AA.\n"); + +done: + WRT_REG_DWORD(®->iobase_window, 0x0000); + RD_REG_DWORD(®->iobase_window); +} + /** * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP63xx. * @irq: @@ -1499,10 +1566,16 @@ qla24xx_intr_handler(int irq, void *dev_id) for (iter = 50; iter--; ) { stat = RD_REG_DWORD(®->host_status); if (stat & HSRX_RISC_PAUSED) { + if (pci_channel_offline(ha->pdev)) + break; + hccr = RD_REG_DWORD(®->hccr); qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, " "Dumping firmware!\n", hccr); + + qla2xxx_check_risc_status(ha); + ha->isp_ops->fw_dump(ha, 1); set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); break; @@ -1606,7 +1679,6 @@ qla24xx_msix_rsp_q(int irq, void *dev_id) qla24xx_process_response_queue(ha); WRT_REG_DWORD(®->hccr, HCCRX_CLR_RISC_INT); - RD_REG_DWORD_RELAXED(®->hccr); spin_unlock_irqrestore(&ha->hardware_lock, flags); @@ -1620,7 +1692,6 @@ qla24xx_msix_default(int irq, void *dev_id) struct device_reg_24xx __iomem *reg; int status; unsigned long flags; - unsigned long iter; uint32_t stat; uint32_t hccr; uint16_t mb[4]; @@ -1630,13 +1701,19 @@ qla24xx_msix_default(int irq, void *dev_id) status = 0; spin_lock_irqsave(&ha->hardware_lock, flags); - for (iter = 50; iter--; ) { + do { stat = RD_REG_DWORD(®->host_status); if (stat & HSRX_RISC_PAUSED) { + if (pci_channel_offline(ha->pdev)) + break; + hccr = RD_REG_DWORD(®->hccr); qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, " "Dumping firmware!\n", hccr); + + qla2xxx_check_risc_status(ha); + ha->isp_ops->fw_dump(ha, 1); set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); break; @@ -1669,8 +1746,7 @@ qla24xx_msix_default(int irq, void *dev_id) break; } WRT_REG_DWORD(®->hccr, HCCRX_CLR_RISC_INT); - RD_REG_DWORD_RELAXED(®->hccr); - } + } while (0); spin_unlock_irqrestore(&ha->hardware_lock, flags); if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) && |