| /* |
| * QLogic Fibre Channel HBA Driver |
| * Copyright (c) 2003-2005 QLogic Corporation |
| * |
| * See LICENSE.qla2xxx for copyright and licensing details. |
| */ |
| #include "qla_def.h" |
| |
| #include <scsi/scsi_tcq.h> |
| |
| static void qla2x00_mbx_completion(scsi_qla_host_t *, uint16_t); |
| static void qla2x00_process_completed_request(struct scsi_qla_host *, uint32_t); |
| static void qla2x00_status_entry(scsi_qla_host_t *, void *); |
| static void qla2x00_status_cont_entry(scsi_qla_host_t *, sts_cont_entry_t *); |
| static void qla2x00_error_entry(scsi_qla_host_t *, sts_entry_t *); |
| static void qla2x00_ms_entry(scsi_qla_host_t *, ms_iocb_entry_t *); |
| |
| static void qla24xx_ms_entry(scsi_qla_host_t *, struct ct_entry_24xx *); |
| |
| /** |
| * qla2100_intr_handler() - Process interrupts for the ISP2100 and ISP2200. |
| * @irq: |
| * @dev_id: SCSI driver HA context |
| * |
| * Called by system whenever the host adapter generates an interrupt. |
| * |
| * Returns handled flag. |
| */ |
| irqreturn_t |
| qla2100_intr_handler(int irq, void *dev_id) |
| { |
| scsi_qla_host_t *ha; |
| struct device_reg_2xxx __iomem *reg; |
| int status; |
| unsigned long flags; |
| unsigned long iter; |
| uint16_t mb[4]; |
| |
| ha = (scsi_qla_host_t *) dev_id; |
| if (!ha) { |
| printk(KERN_INFO |
| "%s(): NULL host pointer\n", __func__); |
| return (IRQ_NONE); |
| } |
| |
| reg = &ha->iobase->isp; |
| status = 0; |
| |
| spin_lock_irqsave(&ha->hardware_lock, flags); |
| for (iter = 50; iter--; ) { |
| if ((RD_REG_WORD(®->istatus) & ISR_RISC_INT) == 0) |
| break; |
| |
| if (RD_REG_WORD(®->semaphore) & BIT_0) { |
| WRT_REG_WORD(®->hccr, HCCR_CLR_RISC_INT); |
| RD_REG_WORD(®->hccr); |
| |
| /* Get mailbox data. */ |
| mb[0] = RD_MAILBOX_REG(ha, reg, 0); |
| if (mb[0] > 0x3fff && mb[0] < 0x8000) { |
| qla2x00_mbx_completion(ha, mb[0]); |
| status |= MBX_INTERRUPT; |
| } else if (mb[0] > 0x7fff && mb[0] < 0xc000) { |
| mb[1] = RD_MAILBOX_REG(ha, reg, 1); |
| mb[2] = RD_MAILBOX_REG(ha, reg, 2); |
| mb[3] = RD_MAILBOX_REG(ha, reg, 3); |
| qla2x00_async_event(ha, mb); |
| } else { |
| /*EMPTY*/ |
| DEBUG2(printk("scsi(%ld): Unrecognized " |
| "interrupt type (%d).\n", |
| ha->host_no, mb[0])); |
| } |
| /* Release mailbox registers. */ |
| WRT_REG_WORD(®->semaphore, 0); |
| RD_REG_WORD(®->semaphore); |
| } else { |
| qla2x00_process_response_queue(ha); |
| |
| WRT_REG_WORD(®->hccr, HCCR_CLR_RISC_INT); |
| RD_REG_WORD(®->hccr); |
| } |
| } |
| spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| |
| 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); |
| } |
| |
| return (IRQ_HANDLED); |
| } |
| |
| /** |
| * qla2300_intr_handler() - Process interrupts for the ISP23xx and ISP63xx. |
| * @irq: |
| * @dev_id: SCSI driver HA context |
| * |
| * Called by system whenever the host adapter generates an interrupt. |
| * |
| * Returns handled flag. |
| */ |
| irqreturn_t |
| qla2300_intr_handler(int irq, void *dev_id) |
| { |
| scsi_qla_host_t *ha; |
| struct device_reg_2xxx __iomem *reg; |
| int status; |
| unsigned long flags; |
| unsigned long iter; |
| uint32_t stat; |
| uint16_t hccr; |
| uint16_t mb[4]; |
| |
| ha = (scsi_qla_host_t *) dev_id; |
| if (!ha) { |
| printk(KERN_INFO |
| "%s(): NULL host pointer\n", __func__); |
| return (IRQ_NONE); |
| } |
| |
| reg = &ha->iobase->isp; |
| status = 0; |
| |
| spin_lock_irqsave(&ha->hardware_lock, flags); |
| for (iter = 50; iter--; ) { |
| stat = RD_REG_DWORD(®->u.isp2300.host_status); |
| if (stat & HSR_RISC_PAUSED) { |
| hccr = RD_REG_WORD(®->hccr); |
| if (hccr & (BIT_15 | BIT_13 | BIT_11 | BIT_8)) |
| qla_printk(KERN_INFO, ha, "Parity error -- " |
| "HCCR=%x, Dumping firmware!\n", hccr); |
| else |
| qla_printk(KERN_INFO, ha, "RISC paused -- " |
| "HCCR=%x, Dumping firmware!\n", hccr); |
| |
| /* |
| * 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 ((stat & HSR_RISC_INT) == 0) |
| break; |
| |
| switch (stat & 0xff) { |
| case 0x1: |
| case 0x2: |
| case 0x10: |
| case 0x11: |
| qla2x00_mbx_completion(ha, MSW(stat)); |
| status |= MBX_INTERRUPT; |
| |
| /* Release mailbox registers. */ |
| WRT_REG_WORD(®->semaphore, 0); |
| break; |
| case 0x12: |
| mb[0] = MSW(stat); |
| mb[1] = RD_MAILBOX_REG(ha, reg, 1); |
| mb[2] = RD_MAILBOX_REG(ha, reg, 2); |
| mb[3] = RD_MAILBOX_REG(ha, reg, 3); |
| qla2x00_async_event(ha, mb); |
| break; |
| case 0x13: |
| qla2x00_process_response_queue(ha); |
| break; |
| case 0x15: |
| mb[0] = MBA_CMPLT_1_16BIT; |
| mb[1] = MSW(stat); |
| qla2x00_async_event(ha, mb); |
| break; |
| case 0x16: |
| mb[0] = MBA_SCSI_COMPLETION; |
| mb[1] = MSW(stat); |
| mb[2] = RD_MAILBOX_REG(ha, reg, 2); |
| qla2x00_async_event(ha, mb); |
| break; |
| default: |
| DEBUG2(printk("scsi(%ld): Unrecognized interrupt type " |
| "(%d).\n", |
| ha->host_no, stat & 0xff)); |
| break; |
| } |
| WRT_REG_WORD(®->hccr, HCCR_CLR_RISC_INT); |
| RD_REG_WORD_RELAXED(®->hccr); |
| } |
| spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| |
| 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); |
| } |
| |
| return (IRQ_HANDLED); |
| } |
| |
| /** |
| * qla2x00_mbx_completion() - Process mailbox command completions. |
| * @ha: SCSI driver HA context |
| * @mb0: Mailbox0 register |
| */ |
| static void |
| qla2x00_mbx_completion(scsi_qla_host_t *ha, uint16_t mb0) |
| { |
| uint16_t cnt; |
| uint16_t __iomem *wptr; |
| struct device_reg_2xxx __iomem *reg = &ha->iobase->isp; |
| |
| /* Load return mailbox registers. */ |
| ha->flags.mbox_int = 1; |
| ha->mailbox_out[0] = mb0; |
| wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 1); |
| |
| for (cnt = 1; cnt < ha->mbx_count; cnt++) { |
| if (IS_QLA2200(ha) && cnt == 8) |
| wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 8); |
| if (cnt == 4 || cnt == 5) |
| ha->mailbox_out[cnt] = qla2x00_debounce_register(wptr); |
| else |
| ha->mailbox_out[cnt] = RD_REG_WORD(wptr); |
| |
| wptr++; |
| } |
| |
| if (ha->mcp) { |
| DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n", |
| __func__, ha->host_no, ha->mcp->mb[0])); |
| } else { |
| DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n", |
| __func__, ha->host_no)); |
| } |
| } |
| |
| /** |
| * qla2x00_async_event() - Process aynchronous events. |
| * @ha: SCSI driver HA context |
| * @mb: Mailbox registers (0 - 3) |
| */ |
| void |
| qla2x00_async_event(scsi_qla_host_t *ha, uint16_t *mb) |
| { |
| #define LS_UNKNOWN 2 |
| static char *link_speeds[5] = { "1", "2", "?", "4", "8" }; |
| char *link_speed; |
| uint16_t handle_cnt; |
| uint16_t cnt; |
| uint32_t handles[5]; |
| struct device_reg_2xxx __iomem *reg = &ha->iobase->isp; |
| uint32_t rscn_entry, host_pid; |
| uint8_t rscn_queue_index; |
| |
| /* Setup to process RIO completion. */ |
| handle_cnt = 0; |
| switch (mb[0]) { |
| case MBA_SCSI_COMPLETION: |
| handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1])); |
| handle_cnt = 1; |
| break; |
| case MBA_CMPLT_1_16BIT: |
| handles[0] = mb[1]; |
| handle_cnt = 1; |
| mb[0] = MBA_SCSI_COMPLETION; |
| break; |
| case MBA_CMPLT_2_16BIT: |
| handles[0] = mb[1]; |
| handles[1] = mb[2]; |
| handle_cnt = 2; |
| mb[0] = MBA_SCSI_COMPLETION; |
| break; |
| case MBA_CMPLT_3_16BIT: |
| handles[0] = mb[1]; |
| handles[1] = mb[2]; |
| handles[2] = mb[3]; |
| handle_cnt = 3; |
| mb[0] = MBA_SCSI_COMPLETION; |
| break; |
| case MBA_CMPLT_4_16BIT: |
| handles[0] = mb[1]; |
| handles[1] = mb[2]; |
| handles[2] = mb[3]; |
| handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6); |
| handle_cnt = 4; |
| mb[0] = MBA_SCSI_COMPLETION; |
| break; |
| case MBA_CMPLT_5_16BIT: |
| handles[0] = mb[1]; |
| handles[1] = mb[2]; |
| handles[2] = mb[3]; |
| handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6); |
| handles[4] = (uint32_t)RD_MAILBOX_REG(ha, reg, 7); |
| handle_cnt = 5; |
| mb[0] = MBA_SCSI_COMPLETION; |
| break; |
| case MBA_CMPLT_2_32BIT: |
| handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1])); |
| handles[1] = le32_to_cpu( |
| ((uint32_t)(RD_MAILBOX_REG(ha, reg, 7) << 16)) | |
| RD_MAILBOX_REG(ha, reg, 6)); |
| handle_cnt = 2; |
| mb[0] = MBA_SCSI_COMPLETION; |
| break; |
| default: |
| break; |
| } |
| |
| switch (mb[0]) { |
| case MBA_SCSI_COMPLETION: /* Fast Post */ |
| if (!ha->flags.online) |
| break; |
| |
| for (cnt = 0; cnt < handle_cnt; cnt++) |
| qla2x00_process_completed_request(ha, handles[cnt]); |
| break; |
| |
| case MBA_RESET: /* Reset */ |
| DEBUG2(printk("scsi(%ld): Asynchronous RESET.\n", ha->host_no)); |
| |
| set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags); |
| break; |
| |
| case MBA_SYSTEM_ERR: /* System Error */ |
| mb[1] = RD_MAILBOX_REG(ha, reg, 1); |
| mb[2] = RD_MAILBOX_REG(ha, reg, 2); |
| mb[3] = RD_MAILBOX_REG(ha, reg, 3); |
| |
| qla_printk(KERN_INFO, ha, |
| "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh.\n", |
| mb[1], mb[2], mb[3]); |
| |
| ha->isp_ops->fw_dump(ha, 1); |
| |
| if (IS_FWI2_CAPABLE(ha)) { |
| if (mb[1] == 0 && mb[2] == 0) { |
| qla_printk(KERN_ERR, ha, |
| "Unrecoverable Hardware Error: adapter " |
| "marked OFFLINE!\n"); |
| ha->flags.online = 0; |
| } else |
| set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); |
| } else if (mb[1] == 0) { |
| qla_printk(KERN_INFO, ha, |
| "Unrecoverable Hardware Error: adapter marked " |
| "OFFLINE!\n"); |
| ha->flags.online = 0; |
| } else |
| set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); |
| break; |
| |
| case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */ |
| DEBUG2(printk("scsi(%ld): ISP Request Transfer Error.\n", |
| ha->host_no)); |
| qla_printk(KERN_WARNING, ha, "ISP Request Transfer Error.\n"); |
| |
| set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); |
| break; |
| |
| case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */ |
| DEBUG2(printk("scsi(%ld): ISP Response Transfer Error.\n", |
| ha->host_no)); |
| qla_printk(KERN_WARNING, ha, "ISP Response Transfer Error.\n"); |
| |
| set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); |
| break; |
| |
| case MBA_WAKEUP_THRES: /* Request Queue Wake-up */ |
| DEBUG2(printk("scsi(%ld): Asynchronous WAKEUP_THRES.\n", |
| ha->host_no)); |
| break; |
| |
| case MBA_LIP_OCCURRED: /* Loop Initialization Procedure */ |
| DEBUG2(printk("scsi(%ld): LIP occured (%x).\n", ha->host_no, |
| mb[1])); |
| qla_printk(KERN_INFO, ha, "LIP occured (%x).\n", mb[1]); |
| |
| if (atomic_read(&ha->loop_state) != LOOP_DOWN) { |
| atomic_set(&ha->loop_state, LOOP_DOWN); |
| atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME); |
| qla2x00_mark_all_devices_lost(ha, 1); |
| } |
| |
| if (ha->parent) { |
| atomic_set(&ha->vp_state, VP_FAILED); |
| fc_vport_set_state(ha->fc_vport, FC_VPORT_FAILED); |
| } |
| |
| set_bit(REGISTER_FC4_NEEDED, &ha->dpc_flags); |
| |
| ha->flags.management_server_logged_in = 0; |
| break; |
| |
| case MBA_LOOP_UP: /* Loop Up Event */ |
| if (IS_QLA2100(ha) || IS_QLA2200(ha)) { |
| link_speed = link_speeds[0]; |
| ha->link_data_rate = PORT_SPEED_1GB; |
| } else { |
| link_speed = link_speeds[LS_UNKNOWN]; |
| if (mb[1] < 5) |
| link_speed = link_speeds[mb[1]]; |
| ha->link_data_rate = mb[1]; |
| } |
| |
| DEBUG2(printk("scsi(%ld): Asynchronous LOOP UP (%s Gbps).\n", |
| ha->host_no, link_speed)); |
| qla_printk(KERN_INFO, ha, "LOOP UP detected (%s Gbps).\n", |
| link_speed); |
| |
| ha->flags.management_server_logged_in = 0; |
| break; |
| |
| case MBA_LOOP_DOWN: /* Loop Down Event */ |
| DEBUG2(printk("scsi(%ld): Asynchronous LOOP DOWN (%x).\n", |
| ha->host_no, mb[1])); |
| qla_printk(KERN_INFO, ha, "LOOP DOWN detected (%x).\n", mb[1]); |
| |
| if (atomic_read(&ha->loop_state) != LOOP_DOWN) { |
| atomic_set(&ha->loop_state, LOOP_DOWN); |
| atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME); |
| ha->device_flags |= DFLG_NO_CABLE; |
| qla2x00_mark_all_devices_lost(ha, 1); |
| } |
| |
| if (ha->parent) { |
| atomic_set(&ha->vp_state, VP_FAILED); |
| fc_vport_set_state(ha->fc_vport, FC_VPORT_FAILED); |
| } |
| |
| ha->flags.management_server_logged_in = 0; |
| ha->link_data_rate = PORT_SPEED_UNKNOWN; |
| if (ql2xfdmienable) |
| set_bit(REGISTER_FDMI_NEEDED, &ha->dpc_flags); |
| break; |
| |
| case MBA_LIP_RESET: /* LIP reset occurred */ |
| DEBUG2(printk("scsi(%ld): Asynchronous LIP RESET (%x).\n", |
| ha->host_no, mb[1])); |
| qla_printk(KERN_INFO, ha, |
| "LIP reset occured (%x).\n", mb[1]); |
| |
| if (atomic_read(&ha->loop_state) != LOOP_DOWN) { |
| atomic_set(&ha->loop_state, LOOP_DOWN); |
| atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME); |
| qla2x00_mark_all_devices_lost(ha, 1); |
| } |
| |
| if (ha->parent) { |
| atomic_set(&ha->vp_state, VP_FAILED); |
| fc_vport_set_state(ha->fc_vport, FC_VPORT_FAILED); |
| } |
| |
| set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags); |
| |
| ha->operating_mode = LOOP; |
| ha->flags.management_server_logged_in = 0; |
| break; |
| |
| case MBA_POINT_TO_POINT: /* Point-to-Point */ |
| if (IS_QLA2100(ha)) |
| break; |
| |
| DEBUG2(printk("scsi(%ld): Asynchronous P2P MODE received.\n", |
| ha->host_no)); |
| |
| /* |
| * Until there's a transition from loop down to loop up, treat |
| * this as loop down only. |
| */ |
| if (atomic_read(&ha->loop_state) != LOOP_DOWN) { |
| atomic_set(&ha->loop_state, LOOP_DOWN); |
| if (!atomic_read(&ha->loop_down_timer)) |
| atomic_set(&ha->loop_down_timer, |
| LOOP_DOWN_TIME); |
| qla2x00_mark_all_devices_lost(ha, 1); |
| } |
| |
| if (ha->parent) { |
| atomic_set(&ha->vp_state, VP_FAILED); |
| fc_vport_set_state(ha->fc_vport, FC_VPORT_FAILED); |
| } |
| |
| if (!(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) { |
| set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags); |
| } |
| set_bit(REGISTER_FC4_NEEDED, &ha->dpc_flags); |
| |
| ha->flags.gpsc_supported = 1; |
| ha->flags.management_server_logged_in = 0; |
| break; |
| |
| case MBA_CHG_IN_CONNECTION: /* Change in connection mode */ |
| if (IS_QLA2100(ha)) |
| break; |
| |
| DEBUG2(printk("scsi(%ld): Asynchronous Change In Connection " |
| "received.\n", |
| ha->host_no)); |
| qla_printk(KERN_INFO, ha, |
| "Configuration change detected: value=%x.\n", mb[1]); |
| |
| if (atomic_read(&ha->loop_state) != LOOP_DOWN) { |
| atomic_set(&ha->loop_state, LOOP_DOWN); |
| if (!atomic_read(&ha->loop_down_timer)) |
| atomic_set(&ha->loop_down_timer, |
| LOOP_DOWN_TIME); |
| qla2x00_mark_all_devices_lost(ha, 1); |
| } |
| |
| if (ha->parent) { |
| atomic_set(&ha->vp_state, VP_FAILED); |
| fc_vport_set_state(ha->fc_vport, FC_VPORT_FAILED); |
| } |
| |
| set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags); |
| set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags); |
| break; |
| |
| case MBA_PORT_UPDATE: /* Port database update */ |
| /* |
| * If PORT UPDATE is global (recieved LIP_OCCURED/LIP_RESET |
| * event etc. earlier indicating loop is down) then process |
| * it. Otherwise ignore it and Wait for RSCN to come in. |
| */ |
| atomic_set(&ha->loop_down_timer, 0); |
| if (atomic_read(&ha->loop_state) != LOOP_DOWN && |
| atomic_read(&ha->loop_state) != LOOP_DEAD) { |
| DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE " |
| "ignored %04x/%04x/%04x.\n", ha->host_no, mb[1], |
| mb[2], mb[3])); |
| break; |
| } |
| |
| DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n", |
| ha->host_no)); |
| DEBUG(printk(KERN_INFO |
| "scsi(%ld): Port database changed %04x %04x %04x.\n", |
| ha->host_no, mb[1], mb[2], mb[3])); |
| |
| /* |
| * Mark all devices as missing so we will login again. |
| */ |
| atomic_set(&ha->loop_state, LOOP_UP); |
| |
| qla2x00_mark_all_devices_lost(ha, 1); |
| |
| ha->flags.rscn_queue_overflow = 1; |
| |
| set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags); |
| set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags); |
| break; |
| |
| case MBA_RSCN_UPDATE: /* State Change Registration */ |
| /* Check if the Vport has issued a SCR */ |
| if (ha->parent && test_bit(VP_SCR_NEEDED, &ha->vp_flags)) |
| break; |
| |
| DEBUG2(printk("scsi(%ld): Asynchronous RSCR UPDATE.\n", |
| ha->host_no)); |
| DEBUG(printk(KERN_INFO |
| "scsi(%ld): RSCN database changed -- %04x %04x.\n", |
| ha->host_no, mb[1], mb[2])); |
| |
| rscn_entry = (mb[1] << 16) | mb[2]; |
| host_pid = (ha->d_id.b.domain << 16) | (ha->d_id.b.area << 8) | |
| ha->d_id.b.al_pa; |
| if (rscn_entry == host_pid) { |
| DEBUG(printk(KERN_INFO |
| "scsi(%ld): Ignoring RSCN update to local host " |
| "port ID (%06x)\n", |
| ha->host_no, host_pid)); |
| break; |
| } |
| |
| rscn_queue_index = ha->rscn_in_ptr + 1; |
| if (rscn_queue_index == MAX_RSCN_COUNT) |
| rscn_queue_index = 0; |
| if (rscn_queue_index != ha->rscn_out_ptr) { |
| ha->rscn_queue[ha->rscn_in_ptr] = rscn_entry; |
| ha->rscn_in_ptr = rscn_queue_index; |
| } else { |
| ha->flags.rscn_queue_overflow = 1; |
| } |
| |
| atomic_set(&ha->loop_state, LOOP_UPDATE); |
| atomic_set(&ha->loop_down_timer, 0); |
| ha->flags.management_server_logged_in = 0; |
| |
| set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags); |
| set_bit(RSCN_UPDATE, &ha->dpc_flags); |
| break; |
| |
| /* case MBA_RIO_RESPONSE: */ |
| case MBA_ZIO_RESPONSE: |
| DEBUG2(printk("scsi(%ld): [R|Z]IO update completion.\n", |
| ha->host_no)); |
| DEBUG(printk(KERN_INFO |
| "scsi(%ld): [R|Z]IO update completion.\n", |
| ha->host_no)); |
| |
| if (IS_FWI2_CAPABLE(ha)) |
| qla24xx_process_response_queue(ha); |
| else |
| qla2x00_process_response_queue(ha); |
| break; |
| |
| case MBA_DISCARD_RND_FRAME: |
| DEBUG2(printk("scsi(%ld): Discard RND Frame -- %04x %04x " |
| "%04x.\n", ha->host_no, mb[1], mb[2], mb[3])); |
| break; |
| |
| case MBA_TRACE_NOTIFICATION: |
| DEBUG2(printk("scsi(%ld): Trace Notification -- %04x %04x.\n", |
| ha->host_no, mb[1], mb[2])); |
| break; |
| } |
| |
| if (!ha->parent && ha->num_vhosts) |
| qla2x00_alert_all_vps(ha, mb); |
| } |
| |
| static void |
| qla2x00_adjust_sdev_qdepth_up(struct scsi_device *sdev, void *data) |
| { |
| fc_port_t *fcport = data; |
| |
| if (fcport->ha->max_q_depth <= sdev->queue_depth) |
| return; |
| |
| if (sdev->ordered_tags) |
| scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, |
| sdev->queue_depth + 1); |
| else |
| scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TAG, |
| sdev->queue_depth + 1); |
| |
| fcport->last_ramp_up = jiffies; |
| |
| DEBUG2(qla_printk(KERN_INFO, fcport->ha, |
| "scsi(%ld:%d:%d:%d): Queue depth adjusted-up to %d.\n", |
| fcport->ha->host_no, sdev->channel, sdev->id, sdev->lun, |
| sdev->queue_depth)); |
| } |
| |
| static void |
| qla2x00_adjust_sdev_qdepth_down(struct scsi_device *sdev, void *data) |
| { |
| fc_port_t *fcport = data; |
| |
| if (!scsi_track_queue_full(sdev, sdev->queue_depth - 1)) |
| return; |
| |
| DEBUG2(qla_printk(KERN_INFO, fcport->ha, |
| "scsi(%ld:%d:%d:%d): Queue depth adjusted-down to %d.\n", |
| fcport->ha->host_no, sdev->channel, sdev->id, sdev->lun, |
| sdev->queue_depth)); |
| } |
| |
| static inline void |
| qla2x00_ramp_up_queue_depth(scsi_qla_host_t *ha, srb_t *sp) |
| { |
| fc_port_t *fcport; |
| struct scsi_device *sdev; |
| |
| sdev = sp->cmd->device; |
| if (sdev->queue_depth >= ha->max_q_depth) |
| return; |
| |
| fcport = sp->fcport; |
| if (time_before(jiffies, |
| fcport->last_ramp_up + ql2xqfullrampup * HZ)) |
| return; |
| if (time_before(jiffies, |
| fcport->last_queue_full + ql2xqfullrampup * HZ)) |
| return; |
| |
| starget_for_each_device(sdev->sdev_target, fcport, |
| qla2x00_adjust_sdev_qdepth_up); |
| } |
| |
| /** |
| * qla2x00_process_completed_request() - Process a Fast Post response. |
| * @ha: SCSI driver HA context |
| * @index: SRB index |
| */ |
| static void |
| qla2x00_process_completed_request(struct scsi_qla_host *ha, uint32_t index) |
| { |
| srb_t *sp; |
| |
| /* Validate handle. */ |
| if (index >= MAX_OUTSTANDING_COMMANDS) { |
| DEBUG2(printk("scsi(%ld): Invalid SCSI completion handle %d.\n", |
| ha->host_no, index)); |
| qla_printk(KERN_WARNING, ha, |
| "Invalid SCSI completion handle %d.\n", index); |
| |
| set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); |
| return; |
| } |
| |
| sp = ha->outstanding_cmds[index]; |
| if (sp) { |
| /* Free outstanding command slot. */ |
| ha->outstanding_cmds[index] = NULL; |
| |
| CMD_COMPL_STATUS(sp->cmd) = 0L; |
| CMD_SCSI_STATUS(sp->cmd) = 0L; |
| |
| /* Save ISP completion status */ |
| sp->cmd->result = DID_OK << 16; |
| |
| qla2x00_ramp_up_queue_depth(ha, sp); |
| qla2x00_sp_compl(ha, sp); |
| } else { |
| DEBUG2(printk("scsi(%ld): Invalid ISP SCSI completion handle\n", |
| ha->host_no)); |
| qla_printk(KERN_WARNING, ha, |
| "Invalid ISP SCSI completion handle\n"); |
| |
| set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); |
| } |
| } |
| |
| /** |
| * qla2x00_process_response_queue() - Process response queue entries. |
| * @ha: SCSI driver HA context |
| */ |
| void |
| qla2x00_process_response_queue(struct scsi_qla_host *ha) |
| { |
| struct device_reg_2xxx __iomem *reg = &ha->iobase->isp; |
| sts_entry_t *pkt; |
| uint16_t handle_cnt; |
| uint16_t cnt; |
| |
| if (!ha->flags.online) |
| return; |
| |
| while (ha->response_ring_ptr->signature != RESPONSE_PROCESSED) { |
| pkt = (sts_entry_t *)ha->response_ring_ptr; |
| |
| ha->rsp_ring_index++; |
| if (ha->rsp_ring_index == ha->response_q_length) { |
| ha->rsp_ring_index = 0; |
| ha->response_ring_ptr = ha->response_ring; |
| } else { |
| ha->response_ring_ptr++; |
| } |
| |
| if (pkt->entry_status != 0) { |
| DEBUG3(printk(KERN_INFO |
| "scsi(%ld): Process error entry.\n", ha->host_no)); |
| |
| qla2x00_error_entry(ha, pkt); |
| ((response_t *)pkt)->signature = RESPONSE_PROCESSED; |
| wmb(); |
| continue; |
| } |
| |
| switch (pkt->entry_type) { |
| case STATUS_TYPE: |
| qla2x00_status_entry(ha, pkt); |
| break; |
| case STATUS_TYPE_21: |
| handle_cnt = ((sts21_entry_t *)pkt)->handle_count; |
| for (cnt = 0; cnt < handle_cnt; cnt++) { |
| qla2x00_process_completed_request(ha, |
| ((sts21_entry_t *)pkt)->handle[cnt]); |
| } |
| break; |
| case STATUS_TYPE_22: |
| handle_cnt = ((sts22_entry_t *)pkt)->handle_count; |
| for (cnt = 0; cnt < handle_cnt; cnt++) { |
| qla2x00_process_completed_request(ha, |
| ((sts22_entry_t *)pkt)->handle[cnt]); |
| } |
| break; |
| case STATUS_CONT_TYPE: |
| qla2x00_status_cont_entry(ha, (sts_cont_entry_t *)pkt); |
| break; |
| case MS_IOCB_TYPE: |
| qla2x00_ms_entry(ha, (ms_iocb_entry_t *)pkt); |
| break; |
| default: |
| /* Type Not Supported. */ |
| DEBUG4(printk(KERN_WARNING |
| "scsi(%ld): Received unknown response pkt type %x " |
| "entry status=%x.\n", |
| ha->host_no, pkt->entry_type, pkt->entry_status)); |
| break; |
| } |
| ((response_t *)pkt)->signature = RESPONSE_PROCESSED; |
| wmb(); |
| } |
| |
| /* Adjust ring index */ |
| WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), ha->rsp_ring_index); |
| } |
| |
| /** |
| * qla2x00_status_entry() - Process a Status IOCB entry. |
| * @ha: SCSI driver HA context |
| * @pkt: Entry pointer |
| */ |
| static void |
| qla2x00_status_entry(scsi_qla_host_t *ha, void *pkt) |
| { |
| srb_t *sp; |
| fc_port_t *fcport; |
| struct scsi_cmnd *cp; |
| sts_entry_t *sts; |
| struct sts_entry_24xx *sts24; |
| uint16_t comp_status; |
| uint16_t scsi_status; |
| uint8_t lscsi_status; |
| int32_t resid; |
| uint32_t sense_len, rsp_info_len, resid_len, fw_resid_len; |
| uint8_t *rsp_info, *sense_data; |
| |
| sts = (sts_entry_t *) pkt; |
| sts24 = (struct sts_entry_24xx *) pkt; |
| if (IS_FWI2_CAPABLE(ha)) { |
| comp_status = le16_to_cpu(sts24->comp_status); |
| scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK; |
| } else { |
| comp_status = le16_to_cpu(sts->comp_status); |
| scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK; |
| } |
| |
| /* Fast path completion. */ |
| if (comp_status == CS_COMPLETE && scsi_status == 0) { |
| qla2x00_process_completed_request(ha, sts->handle); |
| |
| return; |
| } |
| |
| /* Validate handle. */ |
| if (sts->handle < MAX_OUTSTANDING_COMMANDS) { |
| sp = ha->outstanding_cmds[sts->handle]; |
| ha->outstanding_cmds[sts->handle] = NULL; |
| } else |
| sp = NULL; |
| |
| if (sp == NULL) { |
| DEBUG2(printk("scsi(%ld): Status Entry invalid handle.\n", |
| ha->host_no)); |
| qla_printk(KERN_WARNING, ha, "Status Entry invalid handle.\n"); |
| |
| set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); |
| qla2xxx_wake_dpc(ha); |
| return; |
| } |
| cp = sp->cmd; |
| if (cp == NULL) { |
| DEBUG2(printk("scsi(%ld): Command already returned back to OS " |
| "pkt->handle=%d sp=%p.\n", ha->host_no, sts->handle, sp)); |
| qla_printk(KERN_WARNING, ha, |
| "Command is NULL: already returned to OS (sp=%p)\n", sp); |
| |
| return; |
| } |
| |
| lscsi_status = scsi_status & STATUS_MASK; |
| CMD_ENTRY_STATUS(cp) = sts->entry_status; |
| CMD_COMPL_STATUS(cp) = comp_status; |
| CMD_SCSI_STATUS(cp) = scsi_status; |
| |
| fcport = sp->fcport; |
| |
| sense_len = rsp_info_len = resid_len = fw_resid_len = 0; |
| if (IS_FWI2_CAPABLE(ha)) { |
| sense_len = le32_to_cpu(sts24->sense_len); |
| rsp_info_len = le32_to_cpu(sts24->rsp_data_len); |
| resid_len = le32_to_cpu(sts24->rsp_residual_count); |
| fw_resid_len = le32_to_cpu(sts24->residual_len); |
| rsp_info = sts24->data; |
| sense_data = sts24->data; |
| host_to_fcp_swap(sts24->data, sizeof(sts24->data)); |
| } else { |
| sense_len = le16_to_cpu(sts->req_sense_length); |
| rsp_info_len = le16_to_cpu(sts->rsp_info_len); |
| resid_len = le32_to_cpu(sts->residual_length); |
| rsp_info = sts->rsp_info; |
| sense_data = sts->req_sense_data; |
| } |
| |
| /* Check for any FCP transport errors. */ |
| if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) { |
| /* Sense data lies beyond any FCP RESPONSE data. */ |
| if (IS_FWI2_CAPABLE(ha)) |
| sense_data += rsp_info_len; |
| if (rsp_info_len > 3 && rsp_info[3]) { |
| DEBUG2(printk("scsi(%ld:%d:%d:%d) FCP I/O protocol " |
| "failure (%x/%02x%02x%02x%02x%02x%02x%02x%02x)..." |
| "retrying command\n", ha->host_no, |
| cp->device->channel, cp->device->id, |
| cp->device->lun, rsp_info_len, rsp_info[0], |
| rsp_info[1], rsp_info[2], rsp_info[3], rsp_info[4], |
| rsp_info[5], rsp_info[6], rsp_info[7])); |
| |
| cp->result = DID_BUS_BUSY << 16; |
| qla2x00_sp_compl(ha, sp); |
| return; |
| } |
| } |
| |
| /* |
| * Based on Host and scsi status generate status code for Linux |
| */ |
| switch (comp_status) { |
| case CS_COMPLETE: |
| case CS_QUEUE_FULL: |
| if (scsi_status == 0) { |
| cp->result = DID_OK << 16; |
| break; |
| } |
| if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) { |
| resid = resid_len; |
| scsi_set_resid(cp, resid); |
| CMD_RESID_LEN(cp) = resid; |
| |
| if (!lscsi_status && |
| ((unsigned)(scsi_bufflen(cp) - resid) < |
| cp->underflow)) { |
| qla_printk(KERN_INFO, ha, |
| "scsi(%ld:%d:%d:%d): Mid-layer underflow " |
| "detected (%x of %x bytes)...returning " |
| "error status.\n", ha->host_no, |
| cp->device->channel, cp->device->id, |
| cp->device->lun, resid, |
| scsi_bufflen(cp)); |
| |
| cp->result = DID_ERROR << 16; |
| break; |
| } |
| } |
| cp->result = DID_OK << 16 | lscsi_status; |
| |
| if (lscsi_status == SAM_STAT_TASK_SET_FULL) { |
| DEBUG2(printk(KERN_INFO |
| "scsi(%ld): QUEUE FULL status detected " |
| "0x%x-0x%x.\n", ha->host_no, comp_status, |
| scsi_status)); |
| |
| /* Adjust queue depth for all luns on the port. */ |
| fcport->last_queue_full = jiffies; |
| starget_for_each_device(cp->device->sdev_target, |
| fcport, qla2x00_adjust_sdev_qdepth_down); |
| break; |
| } |
| if (lscsi_status != SS_CHECK_CONDITION) |
| break; |
| |
| /* Copy Sense Data into sense buffer. */ |
| memset(cp->sense_buffer, 0, sizeof(cp->sense_buffer)); |
| |
| if (!(scsi_status & SS_SENSE_LEN_VALID)) |
| break; |
| |
| if (sense_len >= sizeof(cp->sense_buffer)) |
| sense_len = sizeof(cp->sense_buffer); |
| |
| CMD_ACTUAL_SNSLEN(cp) = sense_len; |
| sp->request_sense_length = sense_len; |
| sp->request_sense_ptr = cp->sense_buffer; |
| |
| if (sp->request_sense_length > 32) |
| sense_len = 32; |
| |
| memcpy(cp->sense_buffer, sense_data, sense_len); |
| |
| sp->request_sense_ptr += sense_len; |
| sp->request_sense_length -= sense_len; |
| if (sp->request_sense_length != 0) |
| ha->status_srb = sp; |
| |
| DEBUG5(printk("%s(): Check condition Sense data, " |
| "scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n", __func__, |
| ha->host_no, cp->device->channel, cp->device->id, |
| cp->device->lun, cp, cp->serial_number)); |
| if (sense_len) |
| DEBUG5(qla2x00_dump_buffer(cp->sense_buffer, |
| CMD_ACTUAL_SNSLEN(cp))); |
| break; |
| |
| case CS_DATA_UNDERRUN: |
| resid = resid_len; |
| /* Use F/W calculated residual length. */ |
| if (IS_FWI2_CAPABLE(ha)) |
| resid = fw_resid_len; |
| |
| if (scsi_status & SS_RESIDUAL_UNDER) { |
| scsi_set_resid(cp, resid); |
| CMD_RESID_LEN(cp) = resid; |
| } else { |
| DEBUG2(printk(KERN_INFO |
| "scsi(%ld:%d:%d) UNDERRUN status detected " |
| "0x%x-0x%x. resid=0x%x fw_resid=0x%x cdb=0x%x " |
| "os_underflow=0x%x\n", ha->host_no, |
| cp->device->id, cp->device->lun, comp_status, |
| scsi_status, resid_len, resid, cp->cmnd[0], |
| cp->underflow)); |
| |
| } |
| |
| /* |
| * Check to see if SCSI Status is non zero. If so report SCSI |
| * Status. |
| */ |
| if (lscsi_status != 0) { |
| cp->result = DID_OK << 16 | lscsi_status; |
| |
| if (lscsi_status == SAM_STAT_TASK_SET_FULL) { |
| DEBUG2(printk(KERN_INFO |
| "scsi(%ld): QUEUE FULL status detected " |
| "0x%x-0x%x.\n", ha->host_no, comp_status, |
| scsi_status)); |
| |
| /* |
| * Adjust queue depth for all luns on the |
| * port. |
| */ |
| fcport->last_queue_full = jiffies; |
| starget_for_each_device( |
| cp->device->sdev_target, fcport, |
| qla2x00_adjust_sdev_qdepth_down); |
| break; |
| } |
| if (lscsi_status != SS_CHECK_CONDITION) |
| break; |
| |
| /* Copy Sense Data into sense buffer */ |
| memset(cp->sense_buffer, 0, sizeof(cp->sense_buffer)); |
| |
| if (!(scsi_status & SS_SENSE_LEN_VALID)) |
| break; |
| |
| if (sense_len >= sizeof(cp->sense_buffer)) |
| sense_len = sizeof(cp->sense_buffer); |
| |
| CMD_ACTUAL_SNSLEN(cp) = sense_len; |
| sp->request_sense_length = sense_len; |
| sp->request_sense_ptr = cp->sense_buffer; |
| |
| if (sp->request_sense_length > 32) |
| sense_len = 32; |
| |
| memcpy(cp->sense_buffer, sense_data, sense_len); |
| |
| sp->request_sense_ptr += sense_len; |
| sp->request_sense_length -= sense_len; |
| if (sp->request_sense_length != 0) |
| ha->status_srb = sp; |
| |
| DEBUG5(printk("%s(): Check condition Sense data, " |
| "scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n", |
| __func__, ha->host_no, cp->device->channel, |
| cp->device->id, cp->device->lun, cp, |
| cp->serial_number)); |
| |
| /* |
| * In case of a Underrun condition, set both the lscsi |
| * status and the completion status to appropriate |
| * values. |
| */ |
| if (resid && |
| ((unsigned)(scsi_bufflen(cp) - resid) < |
| cp->underflow)) { |
| DEBUG2(qla_printk(KERN_INFO, ha, |
| "scsi(%ld:%d:%d:%d): Mid-layer underflow " |
| "detected (%x of %x bytes)...returning " |
| "error status.\n", ha->host_no, |
| cp->device->channel, cp->device->id, |
| cp->device->lun, resid, |
| scsi_bufflen(cp))); |
| |
| cp->result = DID_ERROR << 16 | lscsi_status; |
| } |
| |
| if (sense_len) |
| DEBUG5(qla2x00_dump_buffer(cp->sense_buffer, |
| CMD_ACTUAL_SNSLEN(cp))); |
| } else { |
| /* |
| * If RISC reports underrun and target does not report |
| * it then we must have a lost frame, so tell upper |
| * layer to retry it by reporting a bus busy. |
| */ |
| if (!(scsi_status & SS_RESIDUAL_UNDER)) { |
| DEBUG2(printk("scsi(%ld:%d:%d:%d) Dropped " |
| "frame(s) detected (%x of %x bytes)..." |
| "retrying command.\n", ha->host_no, |
| cp->device->channel, cp->device->id, |
| cp->device->lun, resid, |
| scsi_bufflen(cp))); |
| |
| cp->result = DID_BUS_BUSY << 16; |
| break; |
| } |
| |
| /* Handle mid-layer underflow */ |
| if ((unsigned)(scsi_bufflen(cp) - resid) < |
| cp->underflow) { |
| qla_printk(KERN_INFO, ha, |
| "scsi(%ld:%d:%d:%d): Mid-layer underflow " |
| "detected (%x of %x bytes)...returning " |
| "error status.\n", ha->host_no, |
| cp->device->channel, cp->device->id, |
| cp->device->lun, resid, |
| scsi_bufflen(cp)); |
| |
| cp->result = DID_ERROR << 16; |
| break; |
| } |
| |
| /* Everybody online, looking good... */ |
| cp->result = DID_OK << 16; |
| } |
| break; |
| |
| case CS_DATA_OVERRUN: |
| DEBUG2(printk(KERN_INFO |
| "scsi(%ld:%d:%d): OVERRUN status detected 0x%x-0x%x\n", |
| ha->host_no, cp->device->id, cp->device->lun, comp_status, |
| scsi_status)); |
| DEBUG2(printk(KERN_INFO |
| "CDB: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n", |
| cp->cmnd[0], cp->cmnd[1], cp->cmnd[2], cp->cmnd[3], |
| cp->cmnd[4], cp->cmnd[5])); |
| DEBUG2(printk(KERN_INFO |
| "PID=0x%lx req=0x%x xtra=0x%x -- returning DID_ERROR " |
| "status!\n", |
| cp->serial_number, scsi_bufflen(cp), resid_len)); |
| |
| cp->result = DID_ERROR << 16; |
| break; |
| |
| case CS_PORT_LOGGED_OUT: |
| case CS_PORT_CONFIG_CHG: |
| case CS_PORT_BUSY: |
| case CS_INCOMPLETE: |
| case CS_PORT_UNAVAILABLE: |
| /* |
| * If the port is in Target Down state, return all IOs for this |
| * Target with DID_NO_CONNECT ELSE Queue the IOs in the |
| * retry_queue. |
| */ |
| DEBUG2(printk("scsi(%ld:%d:%d): status_entry: Port Down " |
| "pid=%ld, compl status=0x%x, port state=0x%x\n", |
| ha->host_no, cp->device->id, cp->device->lun, |
| cp->serial_number, comp_status, |
| atomic_read(&fcport->state))); |
| |
| cp->result = DID_BUS_BUSY << 16; |
| if (atomic_read(&fcport->state) == FCS_ONLINE) { |
| qla2x00_mark_device_lost(ha, fcport, 1, 1); |
| } |
| break; |
| |
| case CS_RESET: |
| DEBUG2(printk(KERN_INFO |
| "scsi(%ld): RESET status detected 0x%x-0x%x.\n", |
| ha->host_no, comp_status, scsi_status)); |
| |
| cp->result = DID_RESET << 16; |
| break; |
| |
| case CS_ABORTED: |
| /* |
| * hv2.19.12 - DID_ABORT does not retry the request if we |
| * aborted this request then abort otherwise it must be a |
| * reset. |
| */ |
| DEBUG2(printk(KERN_INFO |
| "scsi(%ld): ABORT status detected 0x%x-0x%x.\n", |
| ha->host_no, comp_status, scsi_status)); |
| |
| cp->result = DID_RESET << 16; |
| break; |
| |
| case CS_TIMEOUT: |
| cp->result = DID_BUS_BUSY << 16; |
| |
| if (IS_FWI2_CAPABLE(ha)) { |
| DEBUG2(printk(KERN_INFO |
| "scsi(%ld:%d:%d:%d): TIMEOUT status detected " |
| "0x%x-0x%x\n", ha->host_no, cp->device->channel, |
| cp->device->id, cp->device->lun, comp_status, |
| scsi_status)); |
| break; |
| } |
| DEBUG2(printk(KERN_INFO |
| "scsi(%ld:%d:%d:%d): TIMEOUT status detected 0x%x-0x%x " |
| "sflags=%x.\n", ha->host_no, cp->device->channel, |
| cp->device->id, cp->device->lun, comp_status, scsi_status, |
| le16_to_cpu(sts->status_flags))); |
| |
| /* Check to see if logout occurred. */ |
| if ((le16_to_cpu(sts->status_flags) & SF_LOGOUT_SENT)) |
| qla2x00_mark_device_lost(ha, fcport, 1, 1); |
| break; |
| |
| default: |
| DEBUG3(printk("scsi(%ld): Error detected (unknown status) " |
| "0x%x-0x%x.\n", ha->host_no, comp_status, scsi_status)); |
| qla_printk(KERN_INFO, ha, |
| "Unknown status detected 0x%x-0x%x.\n", |
| comp_status, scsi_status); |
| |
| cp->result = DID_ERROR << 16; |
| break; |
| } |
| |
| /* Place command on done queue. */ |
| if (ha->status_srb == NULL) |
| qla2x00_sp_compl(ha, sp); |
| } |
| |
| /** |
| * qla2x00_status_cont_entry() - Process a Status Continuations entry. |
| * @ha: SCSI driver HA context |
| * @pkt: Entry pointer |
| * |
| * Extended sense data. |
| */ |
| static void |
| qla2x00_status_cont_entry(scsi_qla_host_t *ha, sts_cont_entry_t *pkt) |
| { |
| uint8_t sense_sz = 0; |
| srb_t *sp = ha->status_srb; |
| struct scsi_cmnd *cp; |
| |
| if (sp != NULL && sp->request_sense_length != 0) { |
| cp = sp->cmd; |
| if (cp == NULL) { |
| DEBUG2(printk("%s(): Cmd already returned back to OS " |
| "sp=%p.\n", __func__, sp)); |
| qla_printk(KERN_INFO, ha, |
| "cmd is NULL: already returned to OS (sp=%p)\n", |
| sp); |
| |
| ha->status_srb = NULL; |
| return; |
| } |
| |
| if (sp->request_sense_length > sizeof(pkt->data)) { |
| sense_sz = sizeof(pkt->data); |
| } else { |
| sense_sz = sp->request_sense_length; |
| } |
| |
| /* Move sense data. */ |
| if (IS_FWI2_CAPABLE(ha)) |
| host_to_fcp_swap(pkt->data, sizeof(pkt->data)); |
| memcpy(sp->request_sense_ptr, pkt->data, sense_sz); |
| DEBUG5(qla2x00_dump_buffer(sp->request_sense_ptr, sense_sz)); |
| |
| sp->request_sense_ptr += sense_sz; |
| sp->request_sense_length -= sense_sz; |
| |
| /* Place command on done queue. */ |
| if (sp->request_sense_length == 0) { |
| ha->status_srb = NULL; |
| qla2x00_sp_compl(ha, sp); |
| } |
| } |
| } |
| |
| /** |
| * qla2x00_error_entry() - Process an error entry. |
| * @ha: SCSI driver HA context |
| * @pkt: Entry pointer |
| */ |
| static void |
| qla2x00_error_entry(scsi_qla_host_t *ha, sts_entry_t *pkt) |
| { |
| srb_t *sp; |
| |
| #if defined(QL_DEBUG_LEVEL_2) |
| if (pkt->entry_status & RF_INV_E_ORDER) |
| qla_printk(KERN_ERR, ha, "%s: Invalid Entry Order\n", __func__); |
| else if (pkt->entry_status & RF_INV_E_COUNT) |
| qla_printk(KERN_ERR, ha, "%s: Invalid Entry Count\n", __func__); |
| else if (pkt->entry_status & RF_INV_E_PARAM) |
| qla_printk(KERN_ERR, ha, |
| "%s: Invalid Entry Parameter\n", __func__); |
| else if (pkt->entry_status & RF_INV_E_TYPE) |
| qla_printk(KERN_ERR, ha, "%s: Invalid Entry Type\n", __func__); |
| else if (pkt->entry_status & RF_BUSY) |
| qla_printk(KERN_ERR, ha, "%s: Busy\n", __func__); |
| else |
| qla_printk(KERN_ERR, ha, "%s: UNKNOWN flag error\n", __func__); |
| #endif |
| |
| /* Validate handle. */ |
| if (pkt->handle < MAX_OUTSTANDING_COMMANDS) |
| sp = ha->outstanding_cmds[pkt->handle]; |
| else |
| sp = NULL; |
| |
| if (sp) { |
| /* Free outstanding command slot. */ |
| ha->outstanding_cmds[pkt->handle] = NULL; |
| |
| /* Bad payload or header */ |
| if (pkt->entry_status & |
| (RF_INV_E_ORDER | RF_INV_E_COUNT | |
| RF_INV_E_PARAM | RF_INV_E_TYPE)) { |
| sp->cmd->result = DID_ERROR << 16; |
| } else if (pkt->entry_status & RF_BUSY) { |
| sp->cmd->result = DID_BUS_BUSY << 16; |
| } else { |
| sp->cmd->result = DID_ERROR << 16; |
| } |
| qla2x00_sp_compl(ha, sp); |
| |
| } else if (pkt->entry_type == COMMAND_A64_TYPE || pkt->entry_type == |
| COMMAND_TYPE || pkt->entry_type == COMMAND_TYPE_7) { |
| DEBUG2(printk("scsi(%ld): Error entry - invalid handle\n", |
| ha->host_no)); |
| qla_printk(KERN_WARNING, ha, |
| "Error entry - invalid handle\n"); |
| |
| set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); |
| qla2xxx_wake_dpc(ha); |
| } |
| } |
| |
| /** |
| * qla2x00_ms_entry() - Process a Management Server entry. |
| * @ha: SCSI driver HA context |
| * @index: Response queue out pointer |
| */ |
| static void |
| qla2x00_ms_entry(scsi_qla_host_t *ha, ms_iocb_entry_t *pkt) |
| { |
| srb_t *sp; |
| |
| DEBUG3(printk("%s(%ld): pkt=%p pkthandle=%d.\n", |
| __func__, ha->host_no, pkt, pkt->handle1)); |
| |
| /* Validate handle. */ |
| if (pkt->handle1 < MAX_OUTSTANDING_COMMANDS) |
| sp = ha->outstanding_cmds[pkt->handle1]; |
| else |
| sp = NULL; |
| |
| if (sp == NULL) { |
| DEBUG2(printk("scsi(%ld): MS entry - invalid handle\n", |
| ha->host_no)); |
| qla_printk(KERN_WARNING, ha, "MS entry - invalid handle\n"); |
| |
| set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); |
| return; |
| } |
| |
| CMD_COMPL_STATUS(sp->cmd) = le16_to_cpu(pkt->status); |
| CMD_ENTRY_STATUS(sp->cmd) = pkt->entry_status; |
| |
| /* Free outstanding command slot. */ |
| ha->outstanding_cmds[pkt->handle1] = NULL; |
| |
| qla2x00_sp_compl(ha, sp); |
| } |
| |
| |
| /** |
| * qla24xx_mbx_completion() - Process mailbox command completions. |
| * @ha: SCSI driver HA context |
| * @mb0: Mailbox0 register |
| */ |
| static void |
| qla24xx_mbx_completion(scsi_qla_host_t *ha, uint16_t mb0) |
| { |
| uint16_t cnt; |
| uint16_t __iomem *wptr; |
| struct device_reg_24xx __iomem *reg = &ha->iobase->isp24; |
| |
| /* Load return mailbox registers. */ |
| ha->flags.mbox_int = 1; |
| ha->mailbox_out[0] = mb0; |
| wptr = (uint16_t __iomem *)®->mailbox1; |
| |
| for (cnt = 1; cnt < ha->mbx_count; cnt++) { |
| ha->mailbox_out[cnt] = RD_REG_WORD(wptr); |
| wptr++; |
| } |
| |
| if (ha->mcp) { |
| DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n", |
| __func__, ha->host_no, ha->mcp->mb[0])); |
| } else { |
| DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n", |
| __func__, ha->host_no)); |
| } |
| } |
| |
| /** |
| * qla24xx_process_response_queue() - Process response queue entries. |
| * @ha: SCSI driver HA context |
| */ |
| void |
| qla24xx_process_response_queue(struct scsi_qla_host *ha) |
| { |
| struct device_reg_24xx __iomem *reg = &ha->iobase->isp24; |
| struct sts_entry_24xx *pkt; |
| |
| if (!ha->flags.online) |
| return; |
| |
| while (ha->response_ring_ptr->signature != RESPONSE_PROCESSED) { |
| pkt = (struct sts_entry_24xx *)ha->response_ring_ptr; |
| |
| ha->rsp_ring_index++; |
| if (ha->rsp_ring_index == ha->response_q_length) { |
| ha->rsp_ring_index = 0; |
| ha->response_ring_ptr = ha->response_ring; |
| } else { |
| ha->response_ring_ptr++; |
| } |
| |
| if (pkt->entry_status != 0) { |
| DEBUG3(printk(KERN_INFO |
| "scsi(%ld): Process error entry.\n", ha->host_no)); |
| |
| qla2x00_error_entry(ha, (sts_entry_t *) pkt); |
| ((response_t *)pkt)->signature = RESPONSE_PROCESSED; |
| wmb(); |
| continue; |
| } |
| |
| switch (pkt->entry_type) { |
| case STATUS_TYPE: |
| qla2x00_status_entry(ha, pkt); |
| break; |
| case STATUS_CONT_TYPE: |
| qla2x00_status_cont_entry(ha, (sts_cont_entry_t *)pkt); |
| break; |
| case MS_IOCB_TYPE: |
| qla24xx_ms_entry(ha, (struct ct_entry_24xx *)pkt); |
| break; |
| case VP_RPT_ID_IOCB_TYPE: |
| qla24xx_report_id_acquisition(ha, |
| (struct vp_rpt_id_entry_24xx *)pkt); |
| break; |
| default: |
| /* Type Not Supported. */ |
| DEBUG4(printk(KERN_WARNING |
| "scsi(%ld): Received unknown response pkt type %x " |
| "entry status=%x.\n", |
| ha->host_no, pkt->entry_type, pkt->entry_status)); |
| break; |
| } |
| ((response_t *)pkt)->signature = RESPONSE_PROCESSED; |
| wmb(); |
| } |
| |
| /* Adjust ring index */ |
| WRT_REG_DWORD(®->rsp_q_out, ha->rsp_ring_index); |
| } |
| |
| /** |
| * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP63xx. |
| * @irq: |
| * @dev_id: SCSI driver HA context |
| * |
| * Called by system whenever the host adapter generates an interrupt. |
| * |
| * Returns handled flag. |
| */ |
| irqreturn_t |
| qla24xx_intr_handler(int irq, void *dev_id) |
| { |
| scsi_qla_host_t *ha; |
| struct device_reg_24xx __iomem *reg; |
| int status; |
| unsigned long flags; |
| unsigned long iter; |
| uint32_t stat; |
| uint32_t hccr; |
| uint16_t mb[4]; |
| |
| ha = (scsi_qla_host_t *) dev_id; |
| if (!ha) { |
| printk(KERN_INFO |
| "%s(): NULL host pointer\n", __func__); |
| return IRQ_NONE; |
| } |
| |
| reg = &ha->iobase->isp24; |
| status = 0; |
| |
| spin_lock_irqsave(&ha->hardware_lock, flags); |
| for (iter = 50; iter--; ) { |
| stat = RD_REG_DWORD(®->host_status); |
| if (stat & HSRX_RISC_PAUSED) { |
| hccr = RD_REG_DWORD(®->hccr); |
| |
| qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, " |
| "Dumping firmware!\n", hccr); |
| ha->isp_ops->fw_dump(ha, 1); |
| set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); |
| break; |
| } else if ((stat & HSRX_RISC_INT) == 0) |
| break; |
| |
| switch (stat & 0xff) { |
| case 0x1: |
| case 0x2: |
| case 0x10: |
| case 0x11: |
| qla24xx_mbx_completion(ha, MSW(stat)); |
| status |= MBX_INTERRUPT; |
| |
| break; |
| case 0x12: |
| mb[0] = MSW(stat); |
| mb[1] = RD_REG_WORD(®->mailbox1); |
| mb[2] = RD_REG_WORD(®->mailbox2); |
| mb[3] = RD_REG_WORD(®->mailbox3); |
| qla2x00_async_event(ha, mb); |
| break; |
| case 0x13: |
| qla24xx_process_response_queue(ha); |
| break; |
| default: |
| DEBUG2(printk("scsi(%ld): Unrecognized interrupt type " |
| "(%d).\n", |
| ha->host_no, stat & 0xff)); |
| break; |
| } |
| WRT_REG_DWORD(®->hccr, HCCRX_CLR_RISC_INT); |
| RD_REG_DWORD_RELAXED(®->hccr); |
| } |
| spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| |
| 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); |
| } |
| |
| return IRQ_HANDLED; |
| } |
| |
| /** |
| * qla24xx_ms_entry() - Process a Management Server entry. |
| * @ha: SCSI driver HA context |
| * @index: Response queue out pointer |
| */ |
| static void |
| qla24xx_ms_entry(scsi_qla_host_t *ha, struct ct_entry_24xx *pkt) |
| { |
| srb_t *sp; |
| |
| DEBUG3(printk("%s(%ld): pkt=%p pkthandle=%d.\n", |
| __func__, ha->host_no, pkt, pkt->handle)); |
| |
| DEBUG9(printk("%s: ct pkt dump:\n", __func__)); |
| DEBUG9(qla2x00_dump_buffer((void *)pkt, sizeof(struct ct_entry_24xx))); |
| |
| /* Validate handle. */ |
| if (pkt->handle < MAX_OUTSTANDING_COMMANDS) |
| sp = ha->outstanding_cmds[pkt->handle]; |
| else |
| sp = NULL; |
| |
| if (sp == NULL) { |
| DEBUG2(printk("scsi(%ld): MS entry - invalid handle\n", |
| ha->host_no)); |
| DEBUG10(printk("scsi(%ld): MS entry - invalid handle\n", |
| ha->host_no)); |
| qla_printk(KERN_WARNING, ha, "MS entry - invalid handle %d\n", |
| pkt->handle); |
| |
| set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); |
| return; |
| } |
| |
| CMD_COMPL_STATUS(sp->cmd) = le16_to_cpu(pkt->comp_status); |
| CMD_ENTRY_STATUS(sp->cmd) = pkt->entry_status; |
| |
| /* Free outstanding command slot. */ |
| ha->outstanding_cmds[pkt->handle] = NULL; |
| |
| qla2x00_sp_compl(ha, sp); |
| } |
| |
| static irqreturn_t |
| qla24xx_msix_rsp_q(int irq, void *dev_id) |
| { |
| scsi_qla_host_t *ha; |
| struct device_reg_24xx __iomem *reg; |
| unsigned long flags; |
| |
| ha = dev_id; |
| reg = &ha->iobase->isp24; |
| |
| spin_lock_irqsave(&ha->hardware_lock, flags); |
| |
| 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); |
| |
| return IRQ_HANDLED; |
| } |
| |
| static irqreturn_t |
| qla24xx_msix_default(int irq, void *dev_id) |
| { |
| scsi_qla_host_t *ha; |
| struct device_reg_24xx __iomem *reg; |
| int status; |
| unsigned long flags; |
| unsigned long iter; |
| uint32_t stat; |
| uint32_t hccr; |
| uint16_t mb[4]; |
| |
| ha = dev_id; |
| reg = &ha->iobase->isp24; |
| status = 0; |
| |
| spin_lock_irqsave(&ha->hardware_lock, flags); |
| for (iter = 50; iter--; ) { |
| stat = RD_REG_DWORD(®->host_status); |
| if (stat & HSRX_RISC_PAUSED) { |
| hccr = RD_REG_DWORD(®->hccr); |
| |
| qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, " |
| "Dumping firmware!\n", hccr); |
| ha->isp_ops->fw_dump(ha, 1); |
| set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); |
| break; |
| } else if ((stat & HSRX_RISC_INT) == 0) |
| break; |
| |
| switch (stat & 0xff) { |
| case 0x1: |
| case 0x2: |
| case 0x10: |
| case 0x11: |
| qla24xx_mbx_completion(ha, MSW(stat)); |
| status |= MBX_INTERRUPT; |
| |
| break; |
| case 0x12: |
| mb[0] = MSW(stat); |
| mb[1] = RD_REG_WORD(®->mailbox1); |
| mb[2] = RD_REG_WORD(®->mailbox2); |
| mb[3] = RD_REG_WORD(®->mailbox3); |
| qla2x00_async_event(ha, mb); |
| break; |
| case 0x13: |
| qla24xx_process_response_queue(ha); |
| break; |
| default: |
| DEBUG2(printk("scsi(%ld): Unrecognized interrupt type " |
| "(%d).\n", |
| ha->host_no, stat & 0xff)); |
| break; |
| } |
| WRT_REG_DWORD(®->hccr, HCCRX_CLR_RISC_INT); |
| RD_REG_DWORD_RELAXED(®->hccr); |
| } |
| spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| |
| 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); |
| } |
| |
| return IRQ_HANDLED; |
| } |
| |
| /* Interrupt handling helpers. */ |
| |
| struct qla_init_msix_entry { |
| uint16_t entry; |
| uint16_t index; |
| const char *name; |
| irq_handler_t handler; |
| }; |
| |
| static struct qla_init_msix_entry imsix_entries[QLA_MSIX_ENTRIES] = { |
| { QLA_MSIX_DEFAULT, QLA_MIDX_DEFAULT, |
| "qla2xxx (default)", qla24xx_msix_default }, |
| |
| { QLA_MSIX_RSP_Q, QLA_MIDX_RSP_Q, |
| "qla2xxx (rsp_q)", qla24xx_msix_rsp_q }, |
| }; |
| |
| static void |
| qla24xx_disable_msix(scsi_qla_host_t *ha) |
| { |
| int i; |
| struct qla_msix_entry *qentry; |
| |
| for (i = 0; i < QLA_MSIX_ENTRIES; i++) { |
| qentry = &ha->msix_entries[imsix_entries[i].index]; |
| if (qentry->have_irq) |
| free_irq(qentry->msix_vector, ha); |
| } |
| pci_disable_msix(ha->pdev); |
| } |
| |
| static int |
| qla24xx_enable_msix(scsi_qla_host_t *ha) |
| { |
| int i, ret; |
| struct msix_entry entries[QLA_MSIX_ENTRIES]; |
| struct qla_msix_entry *qentry; |
| |
| for (i = 0; i < QLA_MSIX_ENTRIES; i++) |
| entries[i].entry = imsix_entries[i].entry; |
| |
| ret = pci_enable_msix(ha->pdev, entries, ARRAY_SIZE(entries)); |
| if (ret) { |
| qla_printk(KERN_WARNING, ha, |
| "MSI-X: Failed to enable support -- %d/%d\n", |
| QLA_MSIX_ENTRIES, ret); |
| goto msix_out; |
| } |
| ha->flags.msix_enabled = 1; |
| |
| for (i = 0; i < QLA_MSIX_ENTRIES; i++) { |
| qentry = &ha->msix_entries[imsix_entries[i].index]; |
| qentry->msix_vector = entries[i].vector; |
| qentry->msix_entry = entries[i].entry; |
| qentry->have_irq = 0; |
| ret = request_irq(qentry->msix_vector, |
| imsix_entries[i].handler, 0, imsix_entries[i].name, ha); |
| if (ret) { |
| qla_printk(KERN_WARNING, ha, |
| "MSI-X: Unable to register handler -- %x/%d.\n", |
| imsix_entries[i].index, ret); |
| qla24xx_disable_msix(ha); |
| goto msix_out; |
| } |
| qentry->have_irq = 1; |
| } |
| |
| msix_out: |
| return ret; |
| } |
| |
| int |
| qla2x00_request_irqs(scsi_qla_host_t *ha) |
| { |
| int ret; |
| |
| /* If possible, enable MSI-X. */ |
| if (!IS_QLA2432(ha) && !IS_QLA2532(ha)) |
| goto skip_msix; |
| |
| if (IS_QLA2432(ha) && (ha->chip_revision < QLA_MSIX_CHIP_REV_24XX || |
| !QLA_MSIX_FW_MODE_1(ha->fw_attributes))) { |
| DEBUG2(qla_printk(KERN_WARNING, ha, |
| "MSI-X: Unsupported ISP2432 (0x%X, 0x%X).\n", |
| ha->chip_revision, ha->fw_attributes)); |
| |
| goto skip_msix; |
| } |
| |
| ret = qla24xx_enable_msix(ha); |
| if (!ret) { |
| DEBUG2(qla_printk(KERN_INFO, ha, |
| "MSI-X: Enabled (0x%X, 0x%X).\n", ha->chip_revision, |
| ha->fw_attributes)); |
| return ret; |
| } |
| qla_printk(KERN_WARNING, ha, |
| "MSI-X: Falling back-to INTa mode -- %d.\n", ret); |
| skip_msix: |
| |
| if (!IS_QLA24XX(ha) && !IS_QLA2532(ha)) |
| goto skip_msi; |
| |
| ret = pci_enable_msi(ha->pdev); |
| if (!ret) { |
| DEBUG2(qla_printk(KERN_INFO, ha, "MSI: Enabled.\n")); |
| ha->flags.msi_enabled = 1; |
| } |
| skip_msi: |
| |
| ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler, |
| IRQF_DISABLED|IRQF_SHARED, QLA2XXX_DRIVER_NAME, ha); |
| if (!ret) { |
| ha->flags.inta_enabled = 1; |
| ha->host->irq = ha->pdev->irq; |
| } else { |
| qla_printk(KERN_WARNING, ha, |
| "Failed to reserve interrupt %d already in use.\n", |
| ha->pdev->irq); |
| } |
| |
| return ret; |
| } |
| |
| void |
| qla2x00_free_irqs(scsi_qla_host_t *ha) |
| { |
| |
| if (ha->flags.msix_enabled) |
| qla24xx_disable_msix(ha); |
| else if (ha->flags.inta_enabled) { |
| free_irq(ha->host->irq, ha); |
| pci_disable_msi(ha->pdev); |
| } |
| } |