diff options
Diffstat (limited to 'drivers/scsi/qla2xxx/qla_isr.c')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_isr.c | 1464 |
1 files changed, 1464 insertions, 0 deletions
diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c new file mode 100644 index 000000000000..603d4c683c6c --- /dev/null +++ b/drivers/scsi/qla2xxx/qla_isr.c @@ -0,0 +1,1464 @@ +/* + * QLOGIC LINUX SOFTWARE + * + * QLogic ISP2x00 device driver for Linux 2.6.x + * Copyright (C) 2003-2004 QLogic Corporation + * (www.qlogic.com) + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2, or (at your option) any + * later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + */ +#include "qla_def.h" + +static void qla2x00_mbx_completion(scsi_qla_host_t *, uint16_t); +static void qla2x00_async_event(scsi_qla_host_t *, uint32_t); +static void qla2x00_process_completed_request(struct scsi_qla_host *, uint32_t); +void qla2x00_process_response_queue(struct scsi_qla_host *); +static void qla2x00_status_entry(scsi_qla_host_t *, sts_entry_t *); +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 int qla2x00_check_sense(struct scsi_cmnd *cp, os_lun_t *); + +/** + * qla2100_intr_handler() - Process interrupts for the ISP2100 and ISP2200. + * @irq: + * @dev_id: SCSI driver HA context + * @regs: + * + * Called by system whenever the host adapter generates an interrupt. + * + * Returns handled flag. + */ +irqreturn_t +qla2100_intr_handler(int irq, void *dev_id, struct pt_regs *regs) +{ + scsi_qla_host_t *ha; + device_reg_t __iomem *reg; + int status; + unsigned long flags; + unsigned long iter; + uint32_t mbx; + + ha = (scsi_qla_host_t *) dev_id; + if (!ha) { + printk(KERN_INFO + "%s(): NULL host pointer\n", __func__); + return (IRQ_NONE); + } + + reg = ha->iobase; + 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. */ + mbx = RD_MAILBOX_REG(ha, reg, 0); + if (mbx > 0x3fff && mbx < 0x8000) { + qla2x00_mbx_completion(ha, (uint16_t)mbx); + status |= MBX_INTERRUPT; + } else if (mbx > 0x7fff && mbx < 0xc000) { + qla2x00_async_event(ha, mbx); + } else { + /*EMPTY*/ + DEBUG2(printk("scsi(%ld): Unrecognized " + "interrupt type (%d)\n", + ha->host_no, mbx)); + } + /* 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); + + qla2x00_next(ha); + ha->last_irq_cpu = _smp_processor_id(); + ha->total_isr_cnt++; + + if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) && + (status & MBX_INTERRUPT) && ha->flags.mbox_int) { + spin_lock_irqsave(&ha->mbx_reg_lock, flags); + + set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags); + up(&ha->mbx_intr_sem); + + spin_unlock_irqrestore(&ha->mbx_reg_lock, flags); + } + + if (!list_empty(&ha->done_queue)) + qla2x00_done(ha); + + return (IRQ_HANDLED); +} + +/** + * qla2300_intr_handler() - Process interrupts for the ISP23xx and ISP63xx. + * @irq: + * @dev_id: SCSI driver HA context + * @regs: + * + * Called by system whenever the host adapter generates an interrupt. + * + * Returns handled flag. + */ +irqreturn_t +qla2300_intr_handler(int irq, void *dev_id, struct pt_regs *regs) +{ + scsi_qla_host_t *ha; + device_reg_t __iomem *reg; + int status; + unsigned long flags; + unsigned long iter; + uint32_t stat; + uint32_t mbx; + uint16_t hccr; + + ha = (scsi_qla_host_t *) dev_id; + if (!ha) { + printk(KERN_INFO + "%s(): NULL host pointer\n", __func__); + return (IRQ_NONE); + } + + reg = ha->iobase; + 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.\n", hccr); + else + qla_printk(KERN_INFO, ha, + "RISC paused -- HCCR=%x\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); + set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); + break; + } else if ((stat & HSR_RISC_INT) == 0) + break; + + mbx = MSW(stat); + switch (stat & 0xff) { + case 0x13: + qla2x00_process_response_queue(ha); + break; + case 0x1: + case 0x2: + case 0x10: + case 0x11: + qla2x00_mbx_completion(ha, (uint16_t)mbx); + status |= MBX_INTERRUPT; + + /* Release mailbox registers. */ + WRT_REG_WORD(®->semaphore, 0); + break; + case 0x12: + qla2x00_async_event(ha, mbx); + break; + case 0x15: + mbx = mbx << 16 | MBA_CMPLT_1_16BIT; + qla2x00_async_event(ha, mbx); + break; + case 0x16: + mbx = mbx << 16 | MBA_SCSI_COMPLETION; + qla2x00_async_event(ha, mbx); + 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); + + qla2x00_next(ha); + ha->last_irq_cpu = _smp_processor_id(); + ha->total_isr_cnt++; + + if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) && + (status & MBX_INTERRUPT) && ha->flags.mbox_int) { + spin_lock_irqsave(&ha->mbx_reg_lock, flags); + + set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags); + up(&ha->mbx_intr_sem); + + spin_unlock_irqrestore(&ha->mbx_reg_lock, flags); + } + + if (!list_empty(&ha->done_queue)) + qla2x00_done(ha); + + 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; + device_reg_t __iomem *reg = ha->iobase; + + /* 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 + * @mb0: Mailbox0 register + */ +static void +qla2x00_async_event(scsi_qla_host_t *ha, uint32_t mbx) +{ + static char *link_speeds[5] = { "1", "2", "4", "?", "10" }; + char *link_speed; + uint16_t mb[4]; + uint16_t handle_cnt; + uint16_t cnt; + uint32_t handles[5]; + device_reg_t __iomem *reg = ha->iobase; + uint32_t rscn_entry, host_pid; + uint8_t rscn_queue_index; + + /* Setup to process RIO completion. */ + handle_cnt = 0; + mb[0] = LSW(mbx); + switch (mb[0]) { + case MBA_SCSI_COMPLETION: + if (IS_QLA2100(ha) || IS_QLA2200(ha)) + handles[0] = le32_to_cpu( + ((uint32_t)(RD_MAILBOX_REG(ha, reg, 2) << 16)) | + RD_MAILBOX_REG(ha, reg, 1)); + else + handles[0] = le32_to_cpu( + ((uint32_t)(RD_MAILBOX_REG(ha, reg, 2) << 16)) | + MSW(mbx)); + handle_cnt = 1; + break; + case MBA_CMPLT_1_16BIT: + if (IS_QLA2100(ha) || IS_QLA2200(ha)) + handles[0] = (uint32_t)RD_MAILBOX_REG(ha, reg, 1); + else + handles[0] = MSW(mbx); + handle_cnt = 1; + mb[0] = MBA_SCSI_COMPLETION; + break; + case MBA_CMPLT_2_16BIT: + handles[0] = (uint32_t)RD_MAILBOX_REG(ha, reg, 1); + handles[1] = (uint32_t)RD_MAILBOX_REG(ha, reg, 2); + handle_cnt = 2; + mb[0] = MBA_SCSI_COMPLETION; + break; + case MBA_CMPLT_3_16BIT: + handles[0] = (uint32_t)RD_MAILBOX_REG(ha, reg, 1); + handles[1] = (uint32_t)RD_MAILBOX_REG(ha, reg, 2); + handles[2] = (uint32_t)RD_MAILBOX_REG(ha, reg, 3); + handle_cnt = 3; + mb[0] = MBA_SCSI_COMPLETION; + break; + case MBA_CMPLT_4_16BIT: + handles[0] = (uint32_t)RD_MAILBOX_REG(ha, reg, 1); + handles[1] = (uint32_t)RD_MAILBOX_REG(ha, reg, 2); + handles[2] = (uint32_t)RD_MAILBOX_REG(ha, reg, 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] = (uint32_t)RD_MAILBOX_REG(ha, reg, 1); + handles[1] = (uint32_t)RD_MAILBOX_REG(ha, reg, 2); + handles[2] = (uint32_t)RD_MAILBOX_REG(ha, reg, 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)(RD_MAILBOX_REG(ha, reg, 2) << 16)) | + RD_MAILBOX_REG(ha, reg, 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]); + + if (IS_QLA2100(ha) || IS_QLA2200(ha)) + qla2100_fw_dump(ha, 1); + else + qla2300_fw_dump(ha, 1); + + 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 */ + mb[1] = RD_MAILBOX_REG(ha, reg, 1); + + 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); + } + + set_bit(REGISTER_FC4_NEEDED, &ha->dpc_flags); + + ha->flags.management_server_logged_in = 0; + + /* Update AEN queue. */ + qla2x00_enqueue_aen(ha, MBA_LIP_OCCURRED, NULL); + + ha->total_lip_cnt++; + break; + + case MBA_LOOP_UP: /* Loop Up Event */ + mb[1] = RD_MAILBOX_REG(ha, reg, 1); + + ha->link_data_rate = 0; + if (IS_QLA2100(ha) || IS_QLA2200(ha)) { + link_speed = link_speeds[0]; + } else { + link_speed = link_speeds[3]; + 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; + + /* Update AEN queue. */ + qla2x00_enqueue_aen(ha, MBA_LOOP_UP, NULL); + break; + + case MBA_LOOP_DOWN: /* Loop Down Event */ + DEBUG2(printk("scsi(%ld): Asynchronous LOOP DOWN.\n", + ha->host_no)); + qla_printk(KERN_INFO, ha, "LOOP DOWN detected.\n"); + + 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); + } + + ha->flags.management_server_logged_in = 0; + ha->link_data_rate = 0; + + /* Update AEN queue. */ + qla2x00_enqueue_aen(ha, MBA_LOOP_DOWN, NULL); + break; + + case MBA_LIP_RESET: /* LIP reset occurred */ + mb[1] = RD_MAILBOX_REG(ha, reg, 1); + + 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); + } + + set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags); + + ha->operating_mode = LOOP; + ha->flags.management_server_logged_in = 0; + + /* Update AEN queue. */ + qla2x00_enqueue_aen(ha, MBA_LIP_RESET, NULL); + + ha->total_lip_cnt++; + 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); + } + + 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); + break; + + case MBA_CHG_IN_CONNECTION: /* Change in connection mode */ + if (IS_QLA2100(ha)) + break; + + mb[1] = RD_MAILBOX_REG(ha, reg, 1); + + 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); + } + + set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags); + set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags); + break; + + case MBA_PORT_UPDATE: /* Port database update */ + mb[1] = RD_MAILBOX_REG(ha, reg, 1); + mb[2] = RD_MAILBOX_REG(ha, reg, 2); + + /* + * If a single remote port just logged into (or logged out of) + * us, create a new entry in our rscn fcports list and handle + * the event like an RSCN. + */ + if (!IS_QLA2100(ha) && !IS_QLA2200(ha) && !IS_QLA6312(ha) && + !IS_QLA6322(ha) && ha->flags.init_done && mb[1] != 0xffff && + ((ha->operating_mode == P2P && mb[1] != 0) || + (ha->operating_mode != P2P && mb[1] != + SNS_FIRST_LOOP_ID)) && (mb[2] == 6 || mb[2] == 7)) { + int rval; + fc_port_t *rscn_fcport; + + /* Create new fcport for login. */ + rscn_fcport = qla2x00_alloc_rscn_fcport(ha, GFP_ATOMIC); + if (rscn_fcport) { + DEBUG14(printk("scsi(%ld): Port Update -- " + "creating RSCN fcport %p for %x/%x.\n", + ha->host_no, rscn_fcport, mb[1], mb[2])); + + rscn_fcport->loop_id = mb[1]; + rscn_fcport->d_id.b24 = INVALID_PORT_ID; + atomic_set(&rscn_fcport->state, + FCS_DEVICE_LOST); + list_add_tail(&rscn_fcport->list, + &ha->rscn_fcports); + + rval = qla2x00_handle_port_rscn(ha, 0, + rscn_fcport, 1); + if (rval == QLA_SUCCESS) + break; + } else { + DEBUG14(printk("scsi(%ld): Port Update -- " + "-- unable to allocate RSCN fcport " + "login.\n", ha->host_no)); + } + } + + /* + * 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.\n", ha->host_no)); + break; + } + + DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n", + ha->host_no)); + DEBUG(printk(KERN_INFO + "scsi(%ld): Port database changed %04x %04x.\n", + ha->host_no, mb[1], mb[2])); + + /* + * Mark all devices as missing so we will login again. + */ + atomic_set(&ha->loop_state, LOOP_UP); + + qla2x00_mark_all_devices_lost(ha); + + ha->flags.rscn_queue_overflow = 1; + + set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags); + set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags); + + /* Update AEN queue. */ + qla2x00_enqueue_aen(ha, MBA_PORT_UPDATE, NULL); + break; + + case MBA_RSCN_UPDATE: /* State Change Registration */ + mb[1] = RD_MAILBOX_REG(ha, reg, 1); + mb[2] = RD_MAILBOX_REG(ha, reg, 2); + + 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); + + /* Update AEN queue. */ + qla2x00_enqueue_aen(ha, MBA_RSCN_UPDATE, &mb[0]); + 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)); + + qla2x00_process_response_queue(ha); + break; + } +} + +/** + * 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; + + if (ha->actthreads) + ha->actthreads--; + sp->lun_queue->out_cnt--; + CMD_COMPL_STATUS(sp->cmd) = 0L; + CMD_SCSI_STATUS(sp->cmd) = 0L; + + /* Save ISP completion status */ + sp->cmd->result = DID_OK << 16; + sp->fo_retry_cnt = 0; + add_to_done_queue(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) +{ + device_reg_t __iomem *reg = ha->iobase; + 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; + case MBX_IOCB_TYPE: + if (!IS_QLA2100(ha) && !IS_QLA2200(ha) && + !IS_QLA6312(ha) && !IS_QLA6322(ha)) { + if (pkt->sys_define == SOURCE_ASYNC_IOCB) { + qla2x00_process_iodesc(ha, + (struct mbx_entry *)pkt); + } else { + /* MBX IOCB Type Not Supported. */ + DEBUG4(printk(KERN_WARNING + "scsi(%ld): Received unknown MBX " + "IOCB response pkt type=%x " + "source=%x entry status=%x.\n", + ha->host_no, pkt->entry_type, + pkt->sys_define, + pkt->entry_status)); + } + break; + } + /* Fallthrough. */ + 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, sts_entry_t *pkt) +{ + int ret; + unsigned b, t, l; + srb_t *sp; + os_lun_t *lq; + os_tgt_t *tq; + fc_port_t *fcport; + struct scsi_cmnd *cp; + uint16_t comp_status; + uint16_t scsi_status; + uint8_t lscsi_status; + int32_t resid; + uint8_t sense_sz = 0; + uint16_t rsp_info_len; + + /* Fast path completion. */ + if (le16_to_cpu(pkt->comp_status) == CS_COMPLETE && + (le16_to_cpu(pkt->scsi_status) & SS_MASK) == 0) { + qla2x00_process_completed_request(ha, pkt->handle); + + return; + } + + /* Validate handle. */ + if (pkt->handle < MAX_OUTSTANDING_COMMANDS) { + sp = ha->outstanding_cmds[pkt->handle]; + ha->outstanding_cmds[pkt->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); + if (ha->dpc_wait && !ha->dpc_active) + up(ha->dpc_wait); + + return; + } + cp = sp->cmd; + if (cp == NULL) { + DEBUG2(printk("scsi(%ld): Command already returned back to OS " + "pkt->handle=%d sp=%p sp->state:%d\n", + ha->host_no, pkt->handle, sp, sp->state)); + qla_printk(KERN_WARNING, ha, + "Command is NULL: already returned to OS (sp=%p)\n", sp); + + return; + } + + if (ha->actthreads) + ha->actthreads--; + + if (sp->lun_queue == NULL) { + DEBUG2(printk("scsi(%ld): Status Entry invalid lun pointer.\n", + ha->host_no)); + qla_printk(KERN_WARNING, ha, + "Status Entry invalid lun pointer.\n"); + + set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); + if (ha->dpc_wait && !ha->dpc_active) + up(ha->dpc_wait); + + return; + } + + sp->lun_queue->out_cnt--; + + comp_status = le16_to_cpu(pkt->comp_status); + /* Mask of reserved bits 12-15, before we examine the scsi status */ + scsi_status = le16_to_cpu(pkt->scsi_status) & SS_MASK; + lscsi_status = scsi_status & STATUS_MASK; + + CMD_ENTRY_STATUS(cp) = pkt->entry_status; + CMD_COMPL_STATUS(cp) = comp_status; + CMD_SCSI_STATUS(cp) = scsi_status; + + /* Generate LU queue on cntrl, target, LUN */ + b = cp->device->channel; + t = cp->device->id; + l = cp->device->lun, + + tq = sp->tgt_queue; + lq = sp->lun_queue; + + /* + * If loop is in transient state Report DID_BUS_BUSY + */ + if ((comp_status != CS_COMPLETE || scsi_status != 0)) { + if (!(sp->flags & (SRB_IOCTL | SRB_TAPE)) && + (atomic_read(&ha->loop_down_timer) || + atomic_read(&ha->loop_state) != LOOP_READY)) { + + DEBUG2(printk("scsi(%ld:%d:%d:%d): Loop Not Ready - " + "pid=%lx.\n", + ha->host_no, b, t, l, cp->serial_number)); + + qla2x00_extend_timeout(cp, EXTEND_CMD_TIMEOUT); + add_to_retry_queue(ha, sp); + return; + } + } + + /* Check for any FCP transport errors. */ + if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) { + rsp_info_len = le16_to_cpu(pkt->rsp_info_len); + if (rsp_info_len > 3 && pkt->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, b, t, l, + rsp_info_len, pkt->rsp_info[0], pkt->rsp_info[1], + pkt->rsp_info[2], pkt->rsp_info[3], + pkt->rsp_info[4], pkt->rsp_info[5], + pkt->rsp_info[6], pkt->rsp_info[7])); + + cp->result = DID_BUS_BUSY << 16; + add_to_done_queue(ha, sp); + return; + } + } + + /* + * Based on Host and scsi status generate status code for Linux + */ + switch (comp_status) { + case CS_COMPLETE: + if (scsi_status == 0) { + cp->result = DID_OK << 16; + break; + } + if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) { + resid = le32_to_cpu(pkt->residual_length); + cp->resid = resid; + CMD_RESID_LEN(cp) = resid; + } + if (lscsi_status == SS_BUSY_CONDITION) { + cp->result = DID_BUS_BUSY << 16 | lscsi_status; + break; + } + + cp->result = DID_OK << 16 | lscsi_status; + + 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 (le16_to_cpu(pkt->req_sense_length) < + sizeof(cp->sense_buffer)) + sense_sz = le16_to_cpu(pkt->req_sense_length); + else + sense_sz = sizeof(cp->sense_buffer); + + CMD_ACTUAL_SNSLEN(cp) = sense_sz; + sp->request_sense_length = sense_sz; + sp->request_sense_ptr = cp->sense_buffer; + + if (sp->request_sense_length > 32) + sense_sz = 32; + + memcpy(cp->sense_buffer, pkt->req_sense_data, sense_sz); + + sp->request_sense_ptr += sense_sz; + sp->request_sense_length -= sense_sz; + if (sp->request_sense_length != 0) + ha->status_srb = sp; + + if (!(sp->flags & (SRB_IOCTL | SRB_TAPE)) && + qla2x00_check_sense(cp, lq) == QLA_SUCCESS) { + /* Throw away status_cont if any */ + ha->status_srb = NULL; + add_to_scsi_retry_queue(ha, sp); + return; + } + + DEBUG5(printk("%s(): Check condition Sense data, " + "scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n", + __func__, ha->host_no, b, t, l, cp, + cp->serial_number)); + if (sense_sz) + DEBUG5(qla2x00_dump_buffer(cp->sense_buffer, + CMD_ACTUAL_SNSLEN(cp))); + break; + + case CS_DATA_UNDERRUN: + DEBUG2(printk(KERN_INFO + "scsi(%ld:%d:%d) UNDERRUN status detected 0x%x-0x%x.\n", + ha->host_no, t, l, comp_status, scsi_status)); + + resid = le32_to_cpu(pkt->residual_length); + if (scsi_status & SS_RESIDUAL_UNDER) { + cp->resid = resid; + CMD_RESID_LEN(cp) = resid; + } + + /* + * Check to see if SCSI Status is non zero. If so report SCSI + * Status. + */ + if (lscsi_status != 0) { + if (lscsi_status == SS_BUSY_CONDITION) { + cp->result = DID_BUS_BUSY << 16 | + lscsi_status; + break; + } + + cp->result = DID_OK << 16 | lscsi_status; + + 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 (le16_to_cpu(pkt->req_sense_length) < + sizeof(cp->sense_buffer)) + sense_sz = le16_to_cpu(pkt->req_sense_length); + else + sense_sz = sizeof(cp->sense_buffer); + + CMD_ACTUAL_SNSLEN(cp) = sense_sz; + sp->request_sense_length = sense_sz; + sp->request_sense_ptr = cp->sense_buffer; + + if (sp->request_sense_length > 32) + sense_sz = 32; + + memcpy(cp->sense_buffer, pkt->req_sense_data, sense_sz); + + sp->request_sense_ptr += sense_sz; + sp->request_sense_length -= sense_sz; + if (sp->request_sense_length != 0) + ha->status_srb = sp; + + if (!(sp->flags & (SRB_IOCTL | SRB_TAPE)) && + (qla2x00_check_sense(cp, lq) == QLA_SUCCESS)) { + ha->status_srb = NULL; + add_to_scsi_retry_queue(ha, sp); + return; + } + DEBUG5(printk("%s(): Check condition Sense data, " + "scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n", + __func__, ha->host_no, b, t, l, cp, + cp->serial_number)); + if (sense_sz) + 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, b, t, l, resid, + cp->request_bufflen)); + + cp->result = DID_BUS_BUSY << 16; + ha->dropped_frame_error_cnt++; + break; + } + + /* Handle mid-layer underflow */ + if ((unsigned)(cp->request_bufflen - 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, b, t, l, resid, + cp->request_bufflen); + + 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, t, l, 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, cp->request_bufflen, + le32_to_cpu(pkt->residual_length))); + + 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. + */ + fcport = sp->fclun->fcport; + DEBUG2(printk("scsi(%ld:%d:%d): status_entry: Port Down " + "pid=%ld, compl status=0x%x, port state=0x%x\n", + ha->host_no, t, l, cp->serial_number, comp_status, + atomic_read(&fcport->state))); + + if ((sp->flags & (SRB_IOCTL | SRB_TAPE)) || + atomic_read(&fcport->state) == FCS_DEVICE_DEAD) { + cp->result = DID_NO_CONNECT << 16; + if (atomic_read(&ha->loop_state) == LOOP_DOWN) + sp->err_id = SRB_ERR_LOOP; + else + sp->err_id = SRB_ERR_PORT; + add_to_done_queue(ha, sp); + } else { + qla2x00_extend_timeout(cp, EXTEND_CMD_TIMEOUT); + add_to_retry_queue(ha, sp); + } + + if (atomic_read(&fcport->state) == FCS_ONLINE) { + qla2x00_mark_device_lost(ha, fcport, 1); + } + + return; + 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)); + + if (sp->flags & (SRB_IOCTL | SRB_TAPE)) { + cp->result = DID_RESET << 16; + } else { + qla2x00_extend_timeout(cp, EXTEND_CMD_TIMEOUT); + add_to_retry_queue(ha, sp); + return; + } + 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: + DEBUG2(printk(KERN_INFO + "scsi(%ld:%d:%d:%d): TIMEOUT status detected 0x%x-0x%x " + "sflags=%x.\n", ha->host_no, b, t, l, comp_status, + scsi_status, le16_to_cpu(pkt->status_flags))); + + cp->result = DID_BUS_BUSY << 16; + + fcport = lq->fclun->fcport; + + /* Check to see if logout occurred */ + if ((le16_to_cpu(pkt->status_flags) & SF_LOGOUT_SENT)) { + qla2x00_mark_device_lost(ha, fcport, 1); + } + break; + + case CS_QUEUE_FULL: + DEBUG2(printk(KERN_INFO + "scsi(%ld): QUEUE FULL status detected 0x%x-0x%x.\n", + ha->host_no, comp_status, scsi_status)); + + /* SCSI Mid-Layer handles device queue full */ + + cp->result = DID_OK << 16 | lscsi_status; + + /* TODO: ??? */ + /* Adjust queue depth */ + ret = scsi_track_queue_full(cp->device, + sp->lun_queue->out_cnt - 1); + if (ret) { + qla_printk(KERN_INFO, ha, + "scsi(%ld:%d:%d:%d): Queue depth adjusted to %d.\n", + ha->host_no, cp->device->channel, cp->device->id, + cp->device->lun, ret); + } + 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) + add_to_done_queue(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 sp->state:%d\n", __func__, sp, sp->state)); + 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. */ + 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) { + add_to_done_queue(ha, sp); + ha->status_srb = NULL; + } + } +} + +/** + * 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; + if (ha->actthreads) + ha->actthreads--; + sp->lun_queue->out_cnt--; + + /* 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; + } + /* Place command on done queue. */ + add_to_done_queue(ha, sp); + + } else if (pkt->entry_type == COMMAND_A64_TYPE || + pkt->entry_type == COMMAND_TYPE) { + 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); + if (ha->dpc_wait && !ha->dpc_active) + up(ha->dpc_wait); + } +} + +/** + * 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; + + add_to_done_queue(ha, sp); +} + +/** + * qla2x00_check_sense() - Perform any sense data interrogation. + * @cp: SCSI Command + * @lq: Lun queue + * + * Returns QLA_SUCCESS if the lun queue is suspended, else + * QLA_FUNCTION_FAILED (lun queue not suspended). + */ +static int +qla2x00_check_sense(struct scsi_cmnd *cp, os_lun_t *lq) +{ + scsi_qla_host_t *ha; + srb_t *sp; + fc_port_t *fcport; + + ha = (scsi_qla_host_t *) cp->device->host->hostdata; + if ((cp->sense_buffer[0] & 0x70) != 0x70) { + return (QLA_FUNCTION_FAILED); + } + + sp = (srb_t * )CMD_SP(cp); + sp->flags |= SRB_GOT_SENSE; + + switch (cp->sense_buffer[2] & 0xf) { + case RECOVERED_ERROR: + cp->result = DID_OK << 16; + cp->sense_buffer[0] = 0; + break; + + case NOT_READY: + fcport = lq->fclun->fcport; + + /* + * Suspend the lun only for hard disk device type. + */ + if ((fcport->flags & FCF_TAPE_PRESENT) == 0 && + lq->q_state != LUN_STATE_TIMEOUT) { + /* + * If target is in process of being ready then suspend + * lun for 6 secs and retry all the commands. + */ + if (cp->sense_buffer[12] == 0x4 && + cp->sense_buffer[13] == 0x1) { + + /* Suspend the lun for 6 secs */ + qla2x00_suspend_lun(ha, lq, 6, + ql2xsuspendcount); + + return (QLA_SUCCESS); + } + } + break; + } + + return (QLA_FUNCTION_FAILED); +} |