ql4_isr.c revision 7664a1fd76d2eb49b07443f5fc46c75f6a95c98b
1afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu/* 2afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * QLogic iSCSI HBA Driver 37d01d0698f450ed8cc9fd4557f88a3309c868d44Vikas Chaudhary * Copyright (c) 2003-2010 QLogic Corporation 4afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * 5afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * See LICENSE.qla4xxx for copyright and licensing details. 6afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu */ 7afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 8afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu#include "ql4_def.h" 9401425b1ea005b39dcc544bffea833f338ba84f6David C Somayajulu#include "ql4_glbl.h" 10401425b1ea005b39dcc544bffea833f338ba84f6David C Somayajulu#include "ql4_dbg.h" 11401425b1ea005b39dcc544bffea833f338ba84f6David C Somayajulu#include "ql4_inline.h" 12afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 13afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu/** 1494bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins * qla4xxx_copy_sense - copy sense data into cmd sense buffer 1594bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins * @ha: Pointer to host adapter structure. 1694bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins * @sts_entry: Pointer to status entry structure. 1794bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins * @srb: Pointer to srb structure. 1894bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins **/ 1994bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higginsstatic void qla4xxx_copy_sense(struct scsi_qla_host *ha, 2094bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins struct status_entry *sts_entry, 2194bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins struct srb *srb) 2294bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins{ 2394bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins struct scsi_cmnd *cmd = srb->cmd; 2494bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins uint16_t sense_len; 2594bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins 2694bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); 2794bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins sense_len = le16_to_cpu(sts_entry->senseDataByteCnt); 286d78bd56be54286a72413db82d87fc371867629fPrasanna Mumbai if (sense_len == 0) { 296d78bd56be54286a72413db82d87fc371867629fPrasanna Mumbai DEBUG2(ql4_printk(KERN_INFO, ha, "scsi%ld:%d:%d:%d: %s:" 306d78bd56be54286a72413db82d87fc371867629fPrasanna Mumbai " sense len 0\n", ha->host_no, 316d78bd56be54286a72413db82d87fc371867629fPrasanna Mumbai cmd->device->channel, cmd->device->id, 326d78bd56be54286a72413db82d87fc371867629fPrasanna Mumbai cmd->device->lun, __func__)); 336d78bd56be54286a72413db82d87fc371867629fPrasanna Mumbai ha->status_srb = NULL; 3494bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins return; 356d78bd56be54286a72413db82d87fc371867629fPrasanna Mumbai } 3694bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins /* Save total available sense length, 3794bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins * not to exceed cmd's sense buffer size */ 3894bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins sense_len = min_t(uint16_t, sense_len, SCSI_SENSE_BUFFERSIZE); 3994bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins srb->req_sense_ptr = cmd->sense_buffer; 4094bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins srb->req_sense_len = sense_len; 4194bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins 4294bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins /* Copy sense from sts_entry pkt */ 4394bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins sense_len = min_t(uint16_t, sense_len, IOCB_MAX_SENSEDATA_LEN); 4494bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins memcpy(cmd->sense_buffer, sts_entry->senseData, sense_len); 4594bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins 4694bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins DEBUG2(printk(KERN_INFO "scsi%ld:%d:%d:%d: %s: sense key = %x, " 4794bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins "ASL= %02x, ASC/ASCQ = %02x/%02x\n", ha->host_no, 4894bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins cmd->device->channel, cmd->device->id, 4994bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins cmd->device->lun, __func__, 5094bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins sts_entry->senseData[2] & 0x0f, 5194bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins sts_entry->senseData[7], 5294bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins sts_entry->senseData[12], 5394bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins sts_entry->senseData[13])); 5494bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins 5594bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins DEBUG5(qla4xxx_dump_buffer(cmd->sense_buffer, sense_len)); 5694bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins srb->flags |= SRB_GOT_SENSE; 5794bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins 5894bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins /* Update srb, in case a sts_cont pkt follows */ 5994bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins srb->req_sense_ptr += sense_len; 6094bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins srb->req_sense_len -= sense_len; 6194bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins if (srb->req_sense_len != 0) 6294bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins ha->status_srb = srb; 6394bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins else 6494bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins ha->status_srb = NULL; 6594bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins} 6694bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins 6794bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins/** 6894bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins * qla4xxx_status_cont_entry - Process a Status Continuations entry. 6994bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins * @ha: SCSI driver HA context 7094bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins * @sts_cont: Entry pointer 7194bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins * 7294bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins * Extended sense data. 7394bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins */ 7494bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higginsstatic void 7594bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higginsqla4xxx_status_cont_entry(struct scsi_qla_host *ha, 7694bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins struct status_cont_entry *sts_cont) 7794bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins{ 7894bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins struct srb *srb = ha->status_srb; 7994bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins struct scsi_cmnd *cmd; 80735e41543c12c245290cf652727893a66cbd8ab6Vikas Chaudhary uint16_t sense_len; 8194bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins 8294bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins if (srb == NULL) 8394bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins return; 8494bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins 8594bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins cmd = srb->cmd; 8694bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins if (cmd == NULL) { 8794bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins DEBUG2(printk(KERN_INFO "scsi%ld: %s: Cmd already returned " 8894bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins "back to OS srb=%p srb->state:%d\n", ha->host_no, 8994bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins __func__, srb, srb->state)); 9094bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins ha->status_srb = NULL; 9194bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins return; 9294bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins } 9394bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins 9494bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins /* Copy sense data. */ 9594bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins sense_len = min_t(uint16_t, srb->req_sense_len, 9694bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins IOCB_MAX_EXT_SENSEDATA_LEN); 9794bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins memcpy(srb->req_sense_ptr, sts_cont->ext_sense_data, sense_len); 9894bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins DEBUG5(qla4xxx_dump_buffer(srb->req_sense_ptr, sense_len)); 9994bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins 10094bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins srb->req_sense_ptr += sense_len; 10194bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins srb->req_sense_len -= sense_len; 10294bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins 10394bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins /* Place command on done queue. */ 10494bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins if (srb->req_sense_len == 0) { 10509a0f719896659a6c32df11426e55795012c06ffVikas Chaudhary kref_put(&srb->srb_ref, qla4xxx_srb_compl); 10694bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins ha->status_srb = NULL; 10794bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins } 10894bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins} 10994bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins 11094bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins/** 111afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * qla4xxx_status_entry - processes status IOCBs 112afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * @ha: Pointer to host adapter structure. 113afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * @sts_entry: Pointer to status entry structure. 114afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu **/ 115afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulustatic void qla4xxx_status_entry(struct scsi_qla_host *ha, 116afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu struct status_entry *sts_entry) 117afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu{ 118afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu uint8_t scsi_status; 119afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu struct scsi_cmnd *cmd; 120afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu struct srb *srb; 121afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu struct ddb_entry *ddb_entry; 122afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu uint32_t residual; 123afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 124afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu srb = qla4xxx_del_from_active_array(ha, le32_to_cpu(sts_entry->handle)); 125afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu if (!srb) { 1264c6a794d2c0affde28f46ef5646cd41cd1a35f06Vikas Chaudhary ql4_printk(KERN_WARNING, ha, "%s invalid status entry: " 1274c6a794d2c0affde28f46ef5646cd41cd1a35f06Vikas Chaudhary "handle=0x%0x, srb=%p\n", __func__, 1284c6a794d2c0affde28f46ef5646cd41cd1a35f06Vikas Chaudhary sts_entry->handle, srb); 1294c6a794d2c0affde28f46ef5646cd41cd1a35f06Vikas Chaudhary if (is_qla8022(ha)) 1304c6a794d2c0affde28f46ef5646cd41cd1a35f06Vikas Chaudhary set_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags); 1314c6a794d2c0affde28f46ef5646cd41cd1a35f06Vikas Chaudhary else 1324c6a794d2c0affde28f46ef5646cd41cd1a35f06Vikas Chaudhary set_bit(DPC_RESET_HA, &ha->dpc_flags); 133afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu return; 134afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu } 135afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 136afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu cmd = srb->cmd; 137afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu if (cmd == NULL) { 138afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu DEBUG2(printk("scsi%ld: %s: Command already returned back to " 139afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu "OS pkt->handle=%d srb=%p srb->state:%d\n", 140afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu ha->host_no, __func__, sts_entry->handle, 141afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu srb, srb->state)); 142c2660df310a3c445194748b54f51b7224639e742Vikas Chaudhary ql4_printk(KERN_WARNING, ha, "Command is NULL:" 143c2660df310a3c445194748b54f51b7224639e742Vikas Chaudhary " already returned to OS (srb=%p)\n", srb); 144afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu return; 145afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu } 146afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 147afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu ddb_entry = srb->ddb; 148afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu if (ddb_entry == NULL) { 149afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu cmd->result = DID_NO_CONNECT << 16; 150afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu goto status_entry_exit; 151afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu } 152afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 153afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu residual = le32_to_cpu(sts_entry->residualByteCnt); 154afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 155afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu /* Translate ISP error to a Linux SCSI error. */ 156afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu scsi_status = sts_entry->scsiStatus; 157afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu switch (sts_entry->completionStatus) { 158afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu case SCS_COMPLETE: 159afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 1606ea7e33ee1b74de9b60327fec1a0cd39afac3983David C Somayajulu if (sts_entry->iscsiFlags & ISCSI_FLAG_RESIDUAL_OVER) { 1616ea7e33ee1b74de9b60327fec1a0cd39afac3983David C Somayajulu cmd->result = DID_ERROR << 16; 1626ea7e33ee1b74de9b60327fec1a0cd39afac3983David C Somayajulu break; 1636ea7e33ee1b74de9b60327fec1a0cd39afac3983David C Somayajulu } 1646ea7e33ee1b74de9b60327fec1a0cd39afac3983David C Somayajulu 1656ea7e33ee1b74de9b60327fec1a0cd39afac3983David C Somayajulu if (sts_entry->iscsiFlags &ISCSI_FLAG_RESIDUAL_UNDER) { 1665f7186c841a13abff0bf81ee93754b4f46e19141FUJITA Tomonori scsi_set_resid(cmd, residual); 1679d56291366cd6ab156be722e42cf487bef20f5fdDavid C Somayajulu if (!scsi_status && ((scsi_bufflen(cmd) - residual) < 1689d56291366cd6ab156be722e42cf487bef20f5fdDavid C Somayajulu cmd->underflow)) { 1696ea7e33ee1b74de9b60327fec1a0cd39afac3983David C Somayajulu 1706ea7e33ee1b74de9b60327fec1a0cd39afac3983David C Somayajulu cmd->result = DID_ERROR << 16; 1716ea7e33ee1b74de9b60327fec1a0cd39afac3983David C Somayajulu 1726ea7e33ee1b74de9b60327fec1a0cd39afac3983David C Somayajulu DEBUG2(printk("scsi%ld:%d:%d:%d: %s: " 1736ea7e33ee1b74de9b60327fec1a0cd39afac3983David C Somayajulu "Mid-layer Data underrun0, " 1746ea7e33ee1b74de9b60327fec1a0cd39afac3983David C Somayajulu "xferlen = 0x%x, " 1756ea7e33ee1b74de9b60327fec1a0cd39afac3983David C Somayajulu "residual = 0x%x\n", ha->host_no, 1766ea7e33ee1b74de9b60327fec1a0cd39afac3983David C Somayajulu cmd->device->channel, 1776ea7e33ee1b74de9b60327fec1a0cd39afac3983David C Somayajulu cmd->device->id, 1786ea7e33ee1b74de9b60327fec1a0cd39afac3983David C Somayajulu cmd->device->lun, __func__, 1796ea7e33ee1b74de9b60327fec1a0cd39afac3983David C Somayajulu scsi_bufflen(cmd), residual)); 1806ea7e33ee1b74de9b60327fec1a0cd39afac3983David C Somayajulu break; 1816ea7e33ee1b74de9b60327fec1a0cd39afac3983David C Somayajulu } 1826ea7e33ee1b74de9b60327fec1a0cd39afac3983David C Somayajulu } 183afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 184afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu cmd->result = DID_OK << 16 | scsi_status; 185afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 186afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu if (scsi_status != SCSI_CHECK_CONDITION) 187afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu break; 188afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 189afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu /* Copy Sense Data into sense buffer. */ 19094bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins qla4xxx_copy_sense(ha, sts_entry, srb); 191afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu break; 192afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 193afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu case SCS_INCOMPLETE: 194afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu /* Always set the status to DID_ERROR, since 195afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * all conditions result in that status anyway */ 196afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu cmd->result = DID_ERROR << 16; 197afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu break; 198afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 199afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu case SCS_RESET_OCCURRED: 200afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu DEBUG2(printk("scsi%ld:%d:%d:%d: %s: Device RESET occurred\n", 201afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu ha->host_no, cmd->device->channel, 202afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu cmd->device->id, cmd->device->lun, __func__)); 203afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 204afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu cmd->result = DID_RESET << 16; 205afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu break; 206afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 207afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu case SCS_ABORTED: 208afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu DEBUG2(printk("scsi%ld:%d:%d:%d: %s: Abort occurred\n", 209afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu ha->host_no, cmd->device->channel, 210afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu cmd->device->id, cmd->device->lun, __func__)); 211afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 212afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu cmd->result = DID_RESET << 16; 213afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu break; 214afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 215afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu case SCS_TIMEOUT: 216afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu DEBUG2(printk(KERN_INFO "scsi%ld:%d:%d:%d: Timeout\n", 217afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu ha->host_no, cmd->device->channel, 218afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu cmd->device->id, cmd->device->lun)); 219afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 22056d7fcfa815564b40a1b0ec7a30ea8cb3bc0713eMike Christie cmd->result = DID_TRANSPORT_DISRUPTED << 16; 221afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 222afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu /* 223afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * Mark device missing so that we won't continue to send 224afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * I/O to this device. We should get a ddb state change 225afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * AEN soon. 226afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu */ 227b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar if (iscsi_is_session_online(ddb_entry->sess)) 228b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar qla4xxx_mark_device_missing(ddb_entry->sess); 229afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu break; 230afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 231afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu case SCS_DATA_UNDERRUN: 232afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu case SCS_DATA_OVERRUN: 2336ea7e33ee1b74de9b60327fec1a0cd39afac3983David C Somayajulu if ((sts_entry->iscsiFlags & ISCSI_FLAG_RESIDUAL_OVER) || 234b06fc73a9ebd352065dd4dd3139fb53ed72ac970Mike Christie (sts_entry->completionStatus == SCS_DATA_OVERRUN)) { 235b06fc73a9ebd352065dd4dd3139fb53ed72ac970Mike Christie DEBUG2(printk("scsi%ld:%d:%d:%d: %s: " "Data overrun\n", 236b06fc73a9ebd352065dd4dd3139fb53ed72ac970Mike Christie ha->host_no, 237afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu cmd->device->channel, cmd->device->id, 238b06fc73a9ebd352065dd4dd3139fb53ed72ac970Mike Christie cmd->device->lun, __func__)); 239afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 240afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu cmd->result = DID_ERROR << 16; 241afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu break; 242afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu } 243afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 2446ea7e33ee1b74de9b60327fec1a0cd39afac3983David C Somayajulu scsi_set_resid(cmd, residual); 245afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 24624c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade if (sts_entry->iscsiFlags & ISCSI_FLAG_RESIDUAL_UNDER) { 24724c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade 24824c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade /* Both the firmware and target reported UNDERRUN: 24924c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade * 25024c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade * MID-LAYER UNDERFLOW case: 25124c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade * Some kernels do not properly detect midlayer 25224c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade * underflow, so we manually check it and return 25324c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade * ERROR if the minimum required data was not 25424c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade * received. 25524c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade * 25624c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade * ALL OTHER cases: 25724c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade * Fall thru to check scsi_status 25824c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade */ 25924c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade if (!scsi_status && (scsi_bufflen(cmd) - residual) < 26024c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade cmd->underflow) { 26124c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade DEBUG2(ql4_printk(KERN_INFO, ha, 26224c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade "scsi%ld:%d:%d:%d: %s: Mid-layer Data underrun, xferlen = 0x%x,residual = 0x%x\n", 26324c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade ha->host_no, 26424c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade cmd->device->channel, 26524c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade cmd->device->id, 26624c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade cmd->device->lun, __func__, 26724c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade scsi_bufflen(cmd), 26824c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade residual)); 269afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 27024c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade cmd->result = DID_ERROR << 16; 271afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu break; 27224c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade } 27324c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade 27424c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade } else if (scsi_status != SAM_STAT_TASK_SET_FULL && 27524c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade scsi_status != SAM_STAT_BUSY) { 276afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 277afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu /* 27824c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade * The firmware reports UNDERRUN, but the target does 27924c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade * not report it: 28024c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade * 28124c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade * scsi_status | host_byte device_byte 28224c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade * | (19:16) (7:0) 28324c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade * ============= | ========= =========== 28424c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade * TASK_SET_FULL | DID_OK scsi_status 28524c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade * BUSY | DID_OK scsi_status 28624c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade * ALL OTHERS | DID_ERROR scsi_status 28724c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade * 28824c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade * Note: If scsi_status is task set full or busy, 28924c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade * then this else if would fall thru to check the 29024c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade * scsi_status and return DID_OK. 291afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu */ 292afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 29324c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade DEBUG2(ql4_printk(KERN_INFO, ha, 29424c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade "scsi%ld:%d:%d:%d: %s: Dropped frame(s) detected (0x%x of 0x%x bytes).\n", 29524c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade ha->host_no, 29624c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade cmd->device->channel, 29724c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade cmd->device->id, 29824c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade cmd->device->lun, __func__, 29924c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade residual, 30024c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade scsi_bufflen(cmd))); 30124c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade 30224c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade cmd->result = DID_ERROR << 16 | scsi_status; 30324c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade goto check_scsi_status; 304afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu } 30524c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade 30624c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade cmd->result = DID_OK << 16 | scsi_status; 30724c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade 30824c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivadecheck_scsi_status: 30924c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade if (scsi_status == SAM_STAT_CHECK_CONDITION) 31024c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade qla4xxx_copy_sense(ha, sts_entry, srb); 31124c14200947d0c2ca6943fe0353438c3ac9c1c2aLalit Chandivade 312afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu break; 313afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 314afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu case SCS_DEVICE_LOGGED_OUT: 315afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu case SCS_DEVICE_UNAVAILABLE: 316f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary DEBUG2(printk(KERN_INFO "scsi%ld:%d:%d:%d: SCS_DEVICE " 317f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary "state: 0x%x\n", ha->host_no, 318f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary cmd->device->channel, cmd->device->id, 319f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary cmd->device->lun, sts_entry->completionStatus)); 320afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu /* 321afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * Mark device missing so that we won't continue to 322afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * send I/O to this device. We should get a ddb 323afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * state change AEN soon. 324afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu */ 325b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar if (iscsi_is_session_online(ddb_entry->sess)) 326b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar qla4xxx_mark_device_missing(ddb_entry->sess); 327afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 32856d7fcfa815564b40a1b0ec7a30ea8cb3bc0713eMike Christie cmd->result = DID_TRANSPORT_DISRUPTED << 16; 329afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu break; 330afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 331afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu case SCS_QUEUE_FULL: 332afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu /* 333afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * SCSI Mid-Layer handles device queue full 334afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu */ 335afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu cmd->result = DID_OK << 16 | sts_entry->scsiStatus; 336afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu DEBUG2(printk("scsi%ld:%d:%d: %s: QUEUE FULL detected " 337afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu "compl=%02x, scsi=%02x, state=%02x, iFlags=%02x," 338afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu " iResp=%02x\n", ha->host_no, cmd->device->id, 339afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu cmd->device->lun, __func__, 340afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu sts_entry->completionStatus, 341afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu sts_entry->scsiStatus, sts_entry->state_flags, 342afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu sts_entry->iscsiFlags, 343afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu sts_entry->iscsiResponse)); 344afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu break; 345afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 346afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu default: 347afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu cmd->result = DID_ERROR << 16; 348afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu break; 349afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu } 350afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 351afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulustatus_entry_exit: 352afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 35394bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins /* complete the request, if not waiting for status_continuation pkt */ 354afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu srb->cc_stat = sts_entry->completionStatus; 35594bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins if (ha->status_srb == NULL) 35609a0f719896659a6c32df11426e55795012c06ffVikas Chaudhary kref_put(&srb->srb_ref, qla4xxx_srb_compl); 357afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu} 358afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 359afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu/** 360b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar * qla4xxx_passthru_status_entry - processes passthru status IOCBs (0x3C) 361b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar * @ha: Pointer to host adapter structure. 362b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar * @sts_entry: Pointer to status entry structure. 363b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar **/ 364b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankarstatic void qla4xxx_passthru_status_entry(struct scsi_qla_host *ha, 365b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar struct passthru_status *sts_entry) 366b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar{ 367b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar struct iscsi_task *task; 368b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar struct ddb_entry *ddb_entry; 369b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar struct ql4_task_data *task_data; 370b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar struct iscsi_cls_conn *cls_conn; 371b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar struct iscsi_conn *conn; 372b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar itt_t itt; 373b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar uint32_t fw_ddb_index; 374b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar 375b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar itt = sts_entry->handle; 376b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar fw_ddb_index = le32_to_cpu(sts_entry->target); 377b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar 378b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, fw_ddb_index); 379b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar 380b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar if (ddb_entry == NULL) { 381b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar ql4_printk(KERN_ERR, ha, "%s: Invalid target index = 0x%x\n", 382b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar __func__, sts_entry->target); 383b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar return; 384b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar } 385b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar 386b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar cls_conn = ddb_entry->conn; 387b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar conn = cls_conn->dd_data; 388b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar spin_lock(&conn->session->lock); 389b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar task = iscsi_itt_to_task(conn, itt); 390b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar spin_unlock(&conn->session->lock); 391b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar 392b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar if (task == NULL) { 393b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar ql4_printk(KERN_ERR, ha, "%s: Task is NULL\n", __func__); 394b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar return; 395b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar } 396b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar 397b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar task_data = task->dd_data; 398b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar memcpy(&task_data->sts, sts_entry, sizeof(struct passthru_status)); 399b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar ha->req_q_count += task_data->iocb_req_cnt; 400b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar ha->iocb_cnt -= task_data->iocb_req_cnt; 401b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar queue_work(ha->task_wq, &task_data->task_work); 402b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar} 403b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar 404c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudharystatic struct mrb *qla4xxx_del_mrb_from_active_array(struct scsi_qla_host *ha, 405c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary uint32_t index) 406c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary{ 407c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary struct mrb *mrb = NULL; 408c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary 409c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary /* validate handle and remove from active array */ 410c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary if (index >= MAX_MRB) 411c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary return mrb; 412c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary 413c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary mrb = ha->active_mrb_array[index]; 414c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary ha->active_mrb_array[index] = NULL; 415c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary if (!mrb) 416c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary return mrb; 417c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary 418c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary /* update counters */ 419c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary ha->req_q_count += mrb->iocb_cnt; 420c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary ha->iocb_cnt -= mrb->iocb_cnt; 421c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary 422c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary return mrb; 423c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary} 424c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary 425c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudharystatic void qla4xxx_mbox_status_entry(struct scsi_qla_host *ha, 426c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary struct mbox_status_iocb *mbox_sts_entry) 427c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary{ 428c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary struct mrb *mrb; 429c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary uint32_t status; 430c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary uint32_t data_size; 431c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary 432c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary mrb = qla4xxx_del_mrb_from_active_array(ha, 433c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary le32_to_cpu(mbox_sts_entry->handle)); 434c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary 435c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary if (mrb == NULL) { 436c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary ql4_printk(KERN_WARNING, ha, "%s: mrb[%d] is null\n", __func__, 437c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary mbox_sts_entry->handle); 438c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary return; 439c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary } 440c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary 441c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary switch (mrb->mbox_cmd) { 442c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary case MBOX_CMD_PING: 443c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary DEBUG2(ql4_printk(KERN_INFO, ha, "%s: mbox_cmd = 0x%x, " 444c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary "mbox_sts[0] = 0x%x, mbox_sts[6] = 0x%x\n", 445c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary __func__, mrb->mbox_cmd, 446c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary mbox_sts_entry->out_mbox[0], 447c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary mbox_sts_entry->out_mbox[6])); 448c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary 449c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary if (mbox_sts_entry->out_mbox[0] == MBOX_STS_COMMAND_COMPLETE) 4501a590cabc272d62ffca1427d3010aea2098f414fVikas Chaudhary status = ISCSI_PING_SUCCESS; 451c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary else 4521a590cabc272d62ffca1427d3010aea2098f414fVikas Chaudhary status = mbox_sts_entry->out_mbox[6]; 453c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary 454c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary data_size = sizeof(mbox_sts_entry->out_mbox); 455c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary 456c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary qla4xxx_post_ping_evt_work(ha, status, mrb->pid, data_size, 457c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary (uint8_t *) mbox_sts_entry->out_mbox); 458c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary break; 459c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary 460c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary default: 461c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary DEBUG2(ql4_printk(KERN_WARNING, ha, "%s: invalid mbox_cmd = " 462c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary "0x%x\n", __func__, mrb->mbox_cmd)); 463c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary } 464c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary 465c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary kfree(mrb); 466c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary return; 467c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary} 468c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary 469b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar/** 470afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * qla4xxx_process_response_queue - process response queue completions 471afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * @ha: Pointer to host adapter structure. 472afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * 473afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * This routine process response queue completions in interrupt context. 474afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * Hardware_lock locked upon entry 475afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu **/ 476f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudharyvoid qla4xxx_process_response_queue(struct scsi_qla_host *ha) 477afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu{ 478afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu uint32_t count = 0; 479afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu struct srb *srb = NULL; 480afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu struct status_entry *sts_entry; 481afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 482afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu /* Process all responses from response queue */ 483f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary while ((ha->response_ptr->signature != RESPONSE_PROCESSED)) { 484afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu sts_entry = (struct status_entry *) ha->response_ptr; 485afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu count++; 486afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 487afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu /* Advance pointers for next entry */ 488afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu if (ha->response_out == (RESPONSE_QUEUE_DEPTH - 1)) { 489afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu ha->response_out = 0; 490afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu ha->response_ptr = ha->response_ring; 491afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu } else { 492afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu ha->response_out++; 493afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu ha->response_ptr++; 494afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu } 495afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 496afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu /* process entry */ 497afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu switch (sts_entry->hdr.entryType) { 498afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu case ET_STATUS: 49994bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins /* Common status */ 500afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu qla4xxx_status_entry(ha, sts_entry); 501afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu break; 502afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 503afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu case ET_PASSTHRU_STATUS: 504b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar if (sts_entry->hdr.systemDefined == SD_ISCSI_PDU) 505b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar qla4xxx_passthru_status_entry(ha, 506b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar (struct passthru_status *)sts_entry); 507b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar else 508b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar ql4_printk(KERN_ERR, ha, 509b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar "%s: Invalid status received\n", 510b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar __func__); 511b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar 512afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu break; 513afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 514afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu case ET_STATUS_CONTINUATION: 51594bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins qla4xxx_status_cont_entry(ha, 51694bced3c1b371014cbd187f2df5539b13a0e3b90Karen Higgins (struct status_cont_entry *) sts_entry); 517afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu break; 518afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 519afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu case ET_COMMAND: 520afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu /* ISP device queue is full. Command not 521afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * accepted by ISP. Queue command for 522afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * later */ 523afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 524afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu srb = qla4xxx_del_from_active_array(ha, 525afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu le32_to_cpu(sts_entry-> 526afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu handle)); 527afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu if (srb == NULL) 528afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu goto exit_prq_invalid_handle; 529afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 530afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu DEBUG2(printk("scsi%ld: %s: FW device queue full, " 531afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu "srb %p\n", ha->host_no, __func__, srb)); 532afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 533afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu /* ETRY normally by sending it back with 534afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * DID_BUS_BUSY */ 535afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu srb->cmd->result = DID_BUS_BUSY << 16; 53609a0f719896659a6c32df11426e55795012c06ffVikas Chaudhary kref_put(&srb->srb_ref, qla4xxx_srb_compl); 537afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu break; 538afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 539afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu case ET_CONTINUE: 540afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu /* Just throw away the continuation entries */ 541afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu DEBUG2(printk("scsi%ld: %s: Continuation entry - " 542afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu "ignoring\n", ha->host_no, __func__)); 543afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu break; 544afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 545c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary case ET_MBOX_STATUS: 546c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary DEBUG2(ql4_printk(KERN_INFO, ha, 547c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary "%s: mbox status IOCB\n", __func__)); 548c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary qla4xxx_mbox_status_entry(ha, 549c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary (struct mbox_status_iocb *)sts_entry); 550c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary break; 551c0b9d3f750520ad3005b99144260e486ef01b5d9Vikas Chaudhary 552afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu default: 553afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu /* 554afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * Invalid entry in response queue, reset RISC 555afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * firmware. 556afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu */ 557afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu DEBUG2(printk("scsi%ld: %s: Invalid entry %x in " 558afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu "response queue \n", ha->host_no, 559afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu __func__, 560afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu sts_entry->hdr.entryType)); 561afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu goto exit_prq_error; 562afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu } 563f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary ((struct response *)sts_entry)->signature = RESPONSE_PROCESSED; 564f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary wmb(); 565afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu } 566afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 567afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu /* 568f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary * Tell ISP we're done with response(s). This also clears the interrupt. 569afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu */ 570f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary ha->isp_ops->complete_iocb(ha); 571afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 572afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu return; 573afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 574afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajuluexit_prq_invalid_handle: 575afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu DEBUG2(printk("scsi%ld: %s: Invalid handle(srb)=%p type=%x IOCS=%x\n", 576afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu ha->host_no, __func__, srb, sts_entry->hdr.entryType, 577afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu sts_entry->completionStatus)); 578afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 579afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajuluexit_prq_error: 580f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary ha->isp_ops->complete_iocb(ha); 581afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu set_bit(DPC_RESET_HA, &ha->dpc_flags); 582afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu} 583afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 584afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu/** 585afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * qla4xxx_isr_decode_mailbox - decodes mailbox status 586afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * @ha: Pointer to host adapter structure. 587afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * @mailbox_status: Mailbox status. 588afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * 589afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * This routine decodes the mailbox status during the ISR. 590afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * Hardware_lock locked upon entry. runs in interrupt context. 591afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu **/ 592afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulustatic void qla4xxx_isr_decode_mailbox(struct scsi_qla_host * ha, 593afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu uint32_t mbox_status) 594afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu{ 595afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu int i; 596f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary uint32_t mbox_sts[MBOX_AEN_REG_COUNT]; 597afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 598afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu if ((mbox_status == MBOX_STS_BUSY) || 599afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu (mbox_status == MBOX_STS_INTERMEDIATE_COMPLETION) || 600afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu (mbox_status >> 12 == MBOX_COMPLETION_STATUS)) { 601afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu ha->mbox_status[0] = mbox_status; 602afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 603afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu if (test_bit(AF_MBOX_COMMAND, &ha->flags)) { 604afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu /* 605afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * Copy all mailbox registers to a temporary 606afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * location and set mailbox command done flag 607afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu */ 608f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary for (i = 0; i < ha->mbox_status_count; i++) 609f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary ha->mbox_status[i] = is_qla8022(ha) 6107664a1fd76d2eb49b07443f5fc46c75f6a95c98bVikas Chaudhary ? readl(&ha->qla4_82xx_reg->mailbox_out[i]) 611f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary : readl(&ha->reg->mailbox[i]); 612afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 613afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu set_bit(AF_MBOX_COMMAND_DONE, &ha->flags); 614f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 615f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary if (test_bit(AF_MBOX_COMMAND_NOPOLL, &ha->flags)) 616f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary complete(&ha->mbx_intr_comp); 617afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu } 618afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu } else if (mbox_status >> 12 == MBOX_ASYNC_EVENT_STATUS) { 619f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary for (i = 0; i < MBOX_AEN_REG_COUNT; i++) 620f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary mbox_sts[i] = is_qla8022(ha) 6217664a1fd76d2eb49b07443f5fc46c75f6a95c98bVikas Chaudhary ? readl(&ha->qla4_82xx_reg->mailbox_out[i]) 622f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary : readl(&ha->reg->mailbox[i]); 623f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 624afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu /* Immediately process the AENs that don't require much work. 625afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * Only queue the database_changed AENs */ 626401425b1ea005b39dcc544bffea833f338ba84f6David C Somayajulu if (ha->aen_log.count < MAX_AEN_ENTRIES) { 627401425b1ea005b39dcc544bffea833f338ba84f6David C Somayajulu for (i = 0; i < MBOX_AEN_REG_COUNT; i++) 628401425b1ea005b39dcc544bffea833f338ba84f6David C Somayajulu ha->aen_log.entry[ha->aen_log.count].mbox_sts[i] = 629f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary mbox_sts[i]; 630401425b1ea005b39dcc544bffea833f338ba84f6David C Somayajulu ha->aen_log.count++; 631401425b1ea005b39dcc544bffea833f338ba84f6David C Somayajulu } 632afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu switch (mbox_status) { 633afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu case MBOX_ASTS_SYSTEM_ERROR: 634afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu /* Log Mailbox registers */ 635f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary ql4_printk(KERN_INFO, ha, "%s: System Err\n", __func__); 63691a772a4b1840fea39f0377c2cbca4cfc5be05f9Karen Higgins qla4xxx_dump_registers(ha); 63791a772a4b1840fea39f0377c2cbca4cfc5be05f9Karen Higgins 638afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu if (ql4xdontresethba) { 639f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary DEBUG2(printk("scsi%ld: %s:Don't Reset HBA\n", 640f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary ha->host_no, __func__)); 641afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu } else { 642afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu set_bit(AF_GET_CRASH_RECORD, &ha->flags); 643afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu set_bit(DPC_RESET_HA, &ha->dpc_flags); 644afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu } 645afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu break; 646afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 647afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu case MBOX_ASTS_REQUEST_TRANSFER_ERROR: 648afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu case MBOX_ASTS_RESPONSE_TRANSFER_ERROR: 649afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu case MBOX_ASTS_NVRAM_INVALID: 650afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu case MBOX_ASTS_IP_ADDRESS_CHANGED: 651afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu case MBOX_ASTS_DHCP_LEASE_EXPIRED: 652afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu DEBUG2(printk("scsi%ld: AEN %04x, ERROR Status, " 653afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu "Reset HA\n", ha->host_no, mbox_status)); 6544c6a794d2c0affde28f46ef5646cd41cd1a35f06Vikas Chaudhary if (is_qla8022(ha)) 6554c6a794d2c0affde28f46ef5646cd41cd1a35f06Vikas Chaudhary set_bit(DPC_RESET_HA_FW_CONTEXT, 6564c6a794d2c0affde28f46ef5646cd41cd1a35f06Vikas Chaudhary &ha->dpc_flags); 6574c6a794d2c0affde28f46ef5646cd41cd1a35f06Vikas Chaudhary else 6584c6a794d2c0affde28f46ef5646cd41cd1a35f06Vikas Chaudhary set_bit(DPC_RESET_HA, &ha->dpc_flags); 659afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu break; 660afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 661afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu case MBOX_ASTS_LINK_UP: 662afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu set_bit(AF_LINK_UP, &ha->flags); 663065aa1b4db63c7fa68a3e889510c4e63404a1ac7Vikas Chaudhary if (test_bit(AF_INIT_DONE, &ha->flags)) 664065aa1b4db63c7fa68a3e889510c4e63404a1ac7Vikas Chaudhary set_bit(DPC_LINK_CHANGED, &ha->dpc_flags); 665065aa1b4db63c7fa68a3e889510c4e63404a1ac7Vikas Chaudhary 666f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary ql4_printk(KERN_INFO, ha, "%s: LINK UP\n", __func__); 667ff884430801c08bd909fd95f6cb1a0446afd30dbVikas Chaudhary qla4xxx_post_aen_work(ha, ISCSI_EVENT_LINKUP, 668ff884430801c08bd909fd95f6cb1a0446afd30dbVikas Chaudhary sizeof(mbox_sts), 669ff884430801c08bd909fd95f6cb1a0446afd30dbVikas Chaudhary (uint8_t *) mbox_sts); 670afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu break; 671afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 672afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu case MBOX_ASTS_LINK_DOWN: 673afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu clear_bit(AF_LINK_UP, &ha->flags); 674f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary if (test_bit(AF_INIT_DONE, &ha->flags)) 675f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary set_bit(DPC_LINK_CHANGED, &ha->dpc_flags); 676065aa1b4db63c7fa68a3e889510c4e63404a1ac7Vikas Chaudhary 677f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary ql4_printk(KERN_INFO, ha, "%s: LINK DOWN\n", __func__); 678ff884430801c08bd909fd95f6cb1a0446afd30dbVikas Chaudhary qla4xxx_post_aen_work(ha, ISCSI_EVENT_LINKDOWN, 679ff884430801c08bd909fd95f6cb1a0446afd30dbVikas Chaudhary sizeof(mbox_sts), 680ff884430801c08bd909fd95f6cb1a0446afd30dbVikas Chaudhary (uint8_t *) mbox_sts); 681afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu break; 682afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 683afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu case MBOX_ASTS_HEARTBEAT: 684afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu ha->seconds_since_last_heartbeat = 0; 685afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu break; 686afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 687afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu case MBOX_ASTS_DHCP_LEASE_ACQUIRED: 688afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu DEBUG2(printk("scsi%ld: AEN %04x DHCP LEASE " 689afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu "ACQUIRED\n", ha->host_no, mbox_status)); 690afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu set_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags); 691afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu break; 692afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 693afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu case MBOX_ASTS_PROTOCOL_STATISTIC_ALARM: 694afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu case MBOX_ASTS_SCSI_COMMAND_PDU_REJECTED: /* Target 695afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * mode 696afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * only */ 697afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu case MBOX_ASTS_UNSOLICITED_PDU_RECEIVED: /* Connection mode */ 698afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu case MBOX_ASTS_IPSEC_SYSTEM_FATAL_ERROR: 699afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu case MBOX_ASTS_SUBNET_STATE_CHANGE: 700185f107ef9913d9263bc9c2014d16a5a65c4894ePrasanna Mumbai case MBOX_ASTS_DUPLICATE_IP: 701afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu /* No action */ 702afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu DEBUG2(printk("scsi%ld: AEN %04x\n", ha->host_no, 703afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu mbox_status)); 704afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu break; 705afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 706401425b1ea005b39dcc544bffea833f338ba84f6David C Somayajulu case MBOX_ASTS_IP_ADDR_STATE_CHANGED: 707f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary printk("scsi%ld: AEN %04x, mbox_sts[2]=%04x, " 708f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary "mbox_sts[3]=%04x\n", ha->host_no, mbox_sts[0], 709f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary mbox_sts[2], mbox_sts[3]); 710f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 711f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary /* mbox_sts[2] = Old ACB state 712f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary * mbox_sts[3] = new ACB state */ 713f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary if ((mbox_sts[3] == ACB_STATE_VALID) && 714e128271b7bcb9c8955cadbf2e18f8af288979e6bPrasanna Mumbai ((mbox_sts[2] == ACB_STATE_TENTATIVE) || 715e128271b7bcb9c8955cadbf2e18f8af288979e6bPrasanna Mumbai (mbox_sts[2] == ACB_STATE_ACQUIRING))) 716401425b1ea005b39dcc544bffea833f338ba84f6David C Somayajulu set_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags); 717f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary else if ((mbox_sts[3] == ACB_STATE_ACQUIRING) && 7184c6a794d2c0affde28f46ef5646cd41cd1a35f06Vikas Chaudhary (mbox_sts[2] == ACB_STATE_VALID)) { 7194c6a794d2c0affde28f46ef5646cd41cd1a35f06Vikas Chaudhary if (is_qla8022(ha)) 7204c6a794d2c0affde28f46ef5646cd41cd1a35f06Vikas Chaudhary set_bit(DPC_RESET_HA_FW_CONTEXT, 7214c6a794d2c0affde28f46ef5646cd41cd1a35f06Vikas Chaudhary &ha->dpc_flags); 7224c6a794d2c0affde28f46ef5646cd41cd1a35f06Vikas Chaudhary else 7234c6a794d2c0affde28f46ef5646cd41cd1a35f06Vikas Chaudhary set_bit(DPC_RESET_HA, &ha->dpc_flags); 7244c6a794d2c0affde28f46ef5646cd41cd1a35f06Vikas Chaudhary } else if ((mbox_sts[3] == ACB_STATE_UNCONFIGURED)) 72595d31262b3c1ba5b945a6e7b4f679532db622a27Vikas Chaudhary complete(&ha->disable_acb_comp); 726401425b1ea005b39dcc544bffea833f338ba84f6David C Somayajulu break; 727401425b1ea005b39dcc544bffea833f338ba84f6David C Somayajulu 728afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu case MBOX_ASTS_MAC_ADDRESS_CHANGED: 729afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu case MBOX_ASTS_DNS: 730afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu /* No action */ 731afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu DEBUG2(printk(KERN_INFO "scsi%ld: AEN %04x, " 732afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu "mbox_sts[1]=%04x, mbox_sts[2]=%04x\n", 733f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary ha->host_no, mbox_sts[0], 734f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary mbox_sts[1], mbox_sts[2])); 735afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu break; 736afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 737afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu case MBOX_ASTS_SELF_TEST_FAILED: 738afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu case MBOX_ASTS_LOGIN_FAILED: 739afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu /* No action */ 740afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu DEBUG2(printk("scsi%ld: AEN %04x, mbox_sts[1]=%04x, " 741afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu "mbox_sts[2]=%04x, mbox_sts[3]=%04x\n", 742f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary ha->host_no, mbox_sts[0], mbox_sts[1], 743f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary mbox_sts[2], mbox_sts[3])); 744afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu break; 745afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 746afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu case MBOX_ASTS_DATABASE_CHANGED: 747afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu /* Queue AEN information and process it in the DPC 748afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * routine */ 749afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu if (ha->aen_q_count > 0) { 750afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 751afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu /* decrement available counter */ 752afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu ha->aen_q_count--; 753afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 754f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary for (i = 0; i < MBOX_AEN_REG_COUNT; i++) 755afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu ha->aen_q[ha->aen_in].mbox_sts[i] = 756f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary mbox_sts[i]; 757afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 758afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu /* print debug message */ 759185f107ef9913d9263bc9c2014d16a5a65c4894ePrasanna Mumbai DEBUG2(printk("scsi%ld: AEN[%d] %04x queued " 760185f107ef9913d9263bc9c2014d16a5a65c4894ePrasanna Mumbai "mb1:0x%x mb2:0x%x mb3:0x%x " 761185f107ef9913d9263bc9c2014d16a5a65c4894ePrasanna Mumbai "mb4:0x%x mb5:0x%x\n", 762185f107ef9913d9263bc9c2014d16a5a65c4894ePrasanna Mumbai ha->host_no, ha->aen_in, 763185f107ef9913d9263bc9c2014d16a5a65c4894ePrasanna Mumbai mbox_sts[0], mbox_sts[1], 764185f107ef9913d9263bc9c2014d16a5a65c4894ePrasanna Mumbai mbox_sts[2], mbox_sts[3], 765185f107ef9913d9263bc9c2014d16a5a65c4894ePrasanna Mumbai mbox_sts[4], mbox_sts[5])); 766f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 767401425b1ea005b39dcc544bffea833f338ba84f6David C Somayajulu /* advance pointer */ 768401425b1ea005b39dcc544bffea833f338ba84f6David C Somayajulu ha->aen_in++; 769401425b1ea005b39dcc544bffea833f338ba84f6David C Somayajulu if (ha->aen_in == MAX_AEN_ENTRIES) 770401425b1ea005b39dcc544bffea833f338ba84f6David C Somayajulu ha->aen_in = 0; 771afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 772afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu /* The DPC routine will process the aen */ 773afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu set_bit(DPC_AEN, &ha->dpc_flags); 774afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu } else { 775afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu DEBUG2(printk("scsi%ld: %s: aen %04x, queue " 776afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu "overflowed! AEN LOST!!\n", 777afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu ha->host_no, __func__, 778f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary mbox_sts[0])); 779afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 780afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu DEBUG2(printk("scsi%ld: DUMP AEN QUEUE\n", 781afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu ha->host_no)); 782afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 783afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu for (i = 0; i < MAX_AEN_ENTRIES; i++) { 784afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu DEBUG2(printk("AEN[%d] %04x %04x %04x " 785f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary "%04x\n", i, mbox_sts[0], 786f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary mbox_sts[1], mbox_sts[2], 787f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary mbox_sts[3])); 788afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu } 789afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu } 790afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu break; 791afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 7926434080b127088606e03d2ecfe5ffdd797e38d63Shyam Sundar case MBOX_ASTS_TXSCVR_INSERTED: 7936434080b127088606e03d2ecfe5ffdd797e38d63Shyam Sundar DEBUG2(printk(KERN_WARNING 7946434080b127088606e03d2ecfe5ffdd797e38d63Shyam Sundar "scsi%ld: AEN %04x Transceiver" 7956434080b127088606e03d2ecfe5ffdd797e38d63Shyam Sundar " inserted\n", ha->host_no, mbox_sts[0])); 7966434080b127088606e03d2ecfe5ffdd797e38d63Shyam Sundar break; 7976434080b127088606e03d2ecfe5ffdd797e38d63Shyam Sundar 7986434080b127088606e03d2ecfe5ffdd797e38d63Shyam Sundar case MBOX_ASTS_TXSCVR_REMOVED: 7996434080b127088606e03d2ecfe5ffdd797e38d63Shyam Sundar DEBUG2(printk(KERN_WARNING 8006434080b127088606e03d2ecfe5ffdd797e38d63Shyam Sundar "scsi%ld: AEN %04x Transceiver" 8016434080b127088606e03d2ecfe5ffdd797e38d63Shyam Sundar " removed\n", ha->host_no, mbox_sts[0])); 8026434080b127088606e03d2ecfe5ffdd797e38d63Shyam Sundar break; 8036434080b127088606e03d2ecfe5ffdd797e38d63Shyam Sundar 804afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu default: 805afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu DEBUG2(printk(KERN_WARNING 806afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu "scsi%ld: AEN %04x UNKNOWN\n", 807f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary ha->host_no, mbox_sts[0])); 808afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu break; 809afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu } 810afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu } else { 811afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu DEBUG2(printk("scsi%ld: Unknown mailbox status %08X\n", 812afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu ha->host_no, mbox_status)); 813afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 814afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu ha->mbox_status[0] = mbox_status; 815afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu } 816afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu} 817afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 818afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu/** 819f8086f4fd462195a5a824c851997bd12ffceae00Vikas Chaudhary * qla4_82xx_interrupt_service_routine - isr 820f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary * @ha: pointer to host adapter structure. 821f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary * 822f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary * This is the main interrupt service routine. 823f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary * hardware_lock locked upon entry. runs in interrupt context. 824f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary **/ 825f8086f4fd462195a5a824c851997bd12ffceae00Vikas Chaudharyvoid qla4_82xx_interrupt_service_routine(struct scsi_qla_host *ha, 826f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary uint32_t intr_status) 827f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary{ 828f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary /* Process response queue interrupt. */ 829f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary if (intr_status & HSRX_RISC_IOCB_INT) 830f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary qla4xxx_process_response_queue(ha); 831f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 832f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary /* Process mailbox/asynch event interrupt.*/ 833f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary if (intr_status & HSRX_RISC_MB_INT) 834f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary qla4xxx_isr_decode_mailbox(ha, 8357664a1fd76d2eb49b07443f5fc46c75f6a95c98bVikas Chaudhary readl(&ha->qla4_82xx_reg->mailbox_out[0])); 836f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 837f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary /* clear the interrupt */ 8387664a1fd76d2eb49b07443f5fc46c75f6a95c98bVikas Chaudhary writel(0, &ha->qla4_82xx_reg->host_int); 8397664a1fd76d2eb49b07443f5fc46c75f6a95c98bVikas Chaudhary readl(&ha->qla4_82xx_reg->host_int); 840f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary} 841f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 842f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary/** 843afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * qla4xxx_interrupt_service_routine - isr 844afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * @ha: pointer to host adapter structure. 845afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * 846afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * This is the main interrupt service routine. 847afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * hardware_lock locked upon entry. runs in interrupt context. 848afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu **/ 849afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajuluvoid qla4xxx_interrupt_service_routine(struct scsi_qla_host * ha, 850afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu uint32_t intr_status) 851afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu{ 852afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu /* Process response queue interrupt. */ 853afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu if (intr_status & CSR_SCSI_COMPLETION_INTR) 854afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu qla4xxx_process_response_queue(ha); 855afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 856afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu /* Process mailbox/asynch event interrupt.*/ 857afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu if (intr_status & CSR_SCSI_PROCESSOR_INTR) { 858afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu qla4xxx_isr_decode_mailbox(ha, 859afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu readl(&ha->reg->mailbox[0])); 860afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 861afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu /* Clear Mailbox Interrupt */ 862afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu writel(set_rmask(CSR_SCSI_PROCESSOR_INTR), 863afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu &ha->reg->ctrl_status); 864afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu readl(&ha->reg->ctrl_status); 865afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu } 866afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu} 867afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 868afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu/** 869f8086f4fd462195a5a824c851997bd12ffceae00Vikas Chaudhary * qla4_82xx_spurious_interrupt - processes spurious interrupt 870f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary * @ha: pointer to host adapter structure. 871f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary * @reqs_count: . 872f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary * 873f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary **/ 874f8086f4fd462195a5a824c851997bd12ffceae00Vikas Chaudharystatic void qla4_82xx_spurious_interrupt(struct scsi_qla_host *ha, 875f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary uint8_t reqs_count) 876f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary{ 877f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary if (reqs_count) 878f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary return; 879f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 880f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary DEBUG2(ql4_printk(KERN_INFO, ha, "Spurious Interrupt\n")); 881f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary if (is_qla8022(ha)) { 8827664a1fd76d2eb49b07443f5fc46c75f6a95c98bVikas Chaudhary writel(0, &ha->qla4_82xx_reg->host_int); 883f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary if (test_bit(AF_INTx_ENABLED, &ha->flags)) 884f8086f4fd462195a5a824c851997bd12ffceae00Vikas Chaudhary qla4_82xx_wr_32(ha, ha->nx_legacy_intr.tgt_mask_reg, 885f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 0xfbff); 886f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary } 887f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary ha->spurious_int_count++; 888f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary} 889f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 890f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary/** 891afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * qla4xxx_intr_handler - hardware interrupt handler. 892afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * @irq: Unused 893afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * @dev_id: Pointer to host adapter structure 894afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu **/ 8957d12e780e003f93433d49ce78cfedf4b4c52adc5David Howellsirqreturn_t qla4xxx_intr_handler(int irq, void *dev_id) 896afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu{ 897afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu struct scsi_qla_host *ha; 898afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu uint32_t intr_status; 899afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu unsigned long flags = 0; 900afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu uint8_t reqs_count = 0; 901afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 902afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu ha = (struct scsi_qla_host *) dev_id; 903afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu if (!ha) { 904afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu DEBUG2(printk(KERN_INFO 905afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu "qla4xxx: Interrupt with NULL host ptr\n")); 906afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu return IRQ_NONE; 907afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu } 908afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 909afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 910afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 911d915058f48745c0d5c4582566e5aa63867264f81David C Somayajulu ha->isr_count++; 912afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu /* 913afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * Repeatedly service interrupts up to a maximum of 914afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * MAX_REQS_SERVICED_PER_INTR 915afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu */ 916afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu while (1) { 917afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu /* 918afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * Read interrupt status 919afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu */ 920f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary if (ha->isp_ops->rd_shdw_rsp_q_in(ha) != 921afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu ha->response_out) 922afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu intr_status = CSR_SCSI_COMPLETION_INTR; 923afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu else 924afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu intr_status = readl(&ha->reg->ctrl_status); 925afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 926afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu if ((intr_status & 927f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary (CSR_SCSI_RESET_INTR|CSR_FATAL_ERROR|INTR_PENDING)) == 0) { 928afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu if (reqs_count == 0) 929afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu ha->spurious_int_count++; 930afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu break; 931afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu } 932afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 933afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu if (intr_status & CSR_FATAL_ERROR) { 934afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu DEBUG2(printk(KERN_INFO "scsi%ld: Fatal Error, " 935afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu "Status 0x%04x\n", ha->host_no, 936afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu readl(isp_port_error_status (ha)))); 937afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 938afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu /* Issue Soft Reset to clear this error condition. 939afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * This will prevent the RISC from repeatedly 940afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * interrupting the driver; thus, allowing the DPC to 941afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * get scheduled to continue error recovery. 942afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * NOTE: Disabling RISC interrupts does not work in 943afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * this case, as CSR_FATAL_ERROR overrides 944afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * CSR_SCSI_INTR_ENABLE */ 945afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu if ((readl(&ha->reg->ctrl_status) & 946afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu CSR_SCSI_RESET_INTR) == 0) { 947afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu writel(set_rmask(CSR_SOFT_RESET), 948afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu &ha->reg->ctrl_status); 949afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu readl(&ha->reg->ctrl_status); 950afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu } 951afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 952afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu writel(set_rmask(CSR_FATAL_ERROR), 953afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu &ha->reg->ctrl_status); 954afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu readl(&ha->reg->ctrl_status); 955afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 956afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu __qla4xxx_disable_intrs(ha); 957afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 958afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu set_bit(DPC_RESET_HA, &ha->dpc_flags); 959afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 960afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu break; 961afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu } else if (intr_status & CSR_SCSI_RESET_INTR) { 962afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu clear_bit(AF_ONLINE, &ha->flags); 963afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu __qla4xxx_disable_intrs(ha); 964afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 965afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu writel(set_rmask(CSR_SCSI_RESET_INTR), 966afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu &ha->reg->ctrl_status); 967afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu readl(&ha->reg->ctrl_status); 968afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 9697eece5a084264c1bff908b0d6a1b176b39dd272fKaren Higgins if (!test_bit(AF_HA_REMOVAL, &ha->flags)) 970477ffb9d8732f30e7ab2d20f6ed0c22bad37a4a5David C Somayajulu set_bit(DPC_RESET_HA_INTR, &ha->dpc_flags); 971afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 972afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu break; 973afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu } else if (intr_status & INTR_PENDING) { 974f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary ha->isp_ops->interrupt_service_routine(ha, intr_status); 975afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu ha->total_io_count++; 976afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu if (++reqs_count == MAX_REQS_SERVICED_PER_INTR) 977afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu break; 978f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary } 979f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary } 980f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 981f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary spin_unlock_irqrestore(&ha->hardware_lock, flags); 982f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 983f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary return IRQ_HANDLED; 984f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary} 985f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 986f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary/** 987f8086f4fd462195a5a824c851997bd12ffceae00Vikas Chaudhary * qla4_82xx_intr_handler - hardware interrupt handler. 988f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary * @irq: Unused 989f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary * @dev_id: Pointer to host adapter structure 990f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary **/ 991f8086f4fd462195a5a824c851997bd12ffceae00Vikas Chaudharyirqreturn_t qla4_82xx_intr_handler(int irq, void *dev_id) 992f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary{ 993f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary struct scsi_qla_host *ha = dev_id; 994f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary uint32_t intr_status; 995f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary uint32_t status; 996f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary unsigned long flags = 0; 997f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary uint8_t reqs_count = 0; 998f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 9992232be0d5707cd331b92027c0fd7ea5e843c2121Lalit Chandivade if (unlikely(pci_channel_offline(ha->pdev))) 10002232be0d5707cd331b92027c0fd7ea5e843c2121Lalit Chandivade return IRQ_HANDLED; 10012232be0d5707cd331b92027c0fd7ea5e843c2121Lalit Chandivade 1002f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary ha->isr_count++; 1003f8086f4fd462195a5a824c851997bd12ffceae00Vikas Chaudhary status = qla4_82xx_rd_32(ha, ISR_INT_VECTOR); 1004f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary if (!(status & ha->nx_legacy_intr.int_vec_bit)) 1005f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary return IRQ_NONE; 1006f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 1007f8086f4fd462195a5a824c851997bd12ffceae00Vikas Chaudhary status = qla4_82xx_rd_32(ha, ISR_INT_STATE_REG); 1008f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary if (!ISR_IS_LEGACY_INTR_TRIGGERED(status)) { 1009f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary DEBUG2(ql4_printk(KERN_INFO, ha, 1010f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary "%s legacy Int not triggered\n", __func__)); 1011f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary return IRQ_NONE; 1012f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary } 1013f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 1014f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary /* clear the interrupt */ 1015f8086f4fd462195a5a824c851997bd12ffceae00Vikas Chaudhary qla4_82xx_wr_32(ha, ha->nx_legacy_intr.tgt_status_reg, 0xffffffff); 1016f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 1017f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary /* read twice to ensure write is flushed */ 1018f8086f4fd462195a5a824c851997bd12ffceae00Vikas Chaudhary qla4_82xx_rd_32(ha, ISR_INT_VECTOR); 1019f8086f4fd462195a5a824c851997bd12ffceae00Vikas Chaudhary qla4_82xx_rd_32(ha, ISR_INT_VECTOR); 1020f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 1021f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary spin_lock_irqsave(&ha->hardware_lock, flags); 1022f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary while (1) { 10237664a1fd76d2eb49b07443f5fc46c75f6a95c98bVikas Chaudhary if (!(readl(&ha->qla4_82xx_reg->host_int) & 1024f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary ISRX_82XX_RISC_INT)) { 1025f8086f4fd462195a5a824c851997bd12ffceae00Vikas Chaudhary qla4_82xx_spurious_interrupt(ha, reqs_count); 1026f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary break; 1027f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary } 10287664a1fd76d2eb49b07443f5fc46c75f6a95c98bVikas Chaudhary intr_status = readl(&ha->qla4_82xx_reg->host_status); 1029f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary if ((intr_status & 1030f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary (HSRX_RISC_MB_INT | HSRX_RISC_IOCB_INT)) == 0) { 1031f8086f4fd462195a5a824c851997bd12ffceae00Vikas Chaudhary qla4_82xx_spurious_interrupt(ha, reqs_count); 1032f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary break; 1033f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary } 1034f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 1035f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary ha->isp_ops->interrupt_service_routine(ha, intr_status); 1036f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 1037f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary /* Enable Interrupt */ 1038f8086f4fd462195a5a824c851997bd12ffceae00Vikas Chaudhary qla4_82xx_wr_32(ha, ha->nx_legacy_intr.tgt_mask_reg, 0xfbff); 1039afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 1040f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary if (++reqs_count == MAX_REQS_SERVICED_PER_INTR) 1041f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary break; 1042f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary } 1043f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 1044f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary spin_unlock_irqrestore(&ha->hardware_lock, flags); 1045f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary return IRQ_HANDLED; 1046f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary} 1047f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 1048f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudharyirqreturn_t 1049f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudharyqla4_8xxx_msi_handler(int irq, void *dev_id) 1050f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary{ 1051f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary struct scsi_qla_host *ha; 1052f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 1053f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary ha = (struct scsi_qla_host *) dev_id; 1054f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary if (!ha) { 1055f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary DEBUG2(printk(KERN_INFO 1056f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary "qla4xxx: MSIX: Interrupt with NULL host ptr\n")); 1057f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary return IRQ_NONE; 1058f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary } 1059f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 1060f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary ha->isr_count++; 1061f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary /* clear the interrupt */ 1062f8086f4fd462195a5a824c851997bd12ffceae00Vikas Chaudhary qla4_82xx_wr_32(ha, ha->nx_legacy_intr.tgt_status_reg, 0xffffffff); 1063f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 1064f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary /* read twice to ensure write is flushed */ 1065f8086f4fd462195a5a824c851997bd12ffceae00Vikas Chaudhary qla4_82xx_rd_32(ha, ISR_INT_VECTOR); 1066f8086f4fd462195a5a824c851997bd12ffceae00Vikas Chaudhary qla4_82xx_rd_32(ha, ISR_INT_VECTOR); 1067f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 1068f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary return qla4_8xxx_default_intr_handler(irq, dev_id); 1069f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary} 1070f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 1071f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary/** 1072f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary * qla4_8xxx_default_intr_handler - hardware interrupt handler. 1073f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary * @irq: Unused 1074f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary * @dev_id: Pointer to host adapter structure 1075f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary * 1076f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary * This interrupt handler is called directly for MSI-X, and 1077f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary * called indirectly for MSI. 1078f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary **/ 1079f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudharyirqreturn_t 1080f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudharyqla4_8xxx_default_intr_handler(int irq, void *dev_id) 1081f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary{ 1082f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary struct scsi_qla_host *ha = dev_id; 1083f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary unsigned long flags; 1084f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary uint32_t intr_status; 1085f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary uint8_t reqs_count = 0; 1086f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 1087f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary spin_lock_irqsave(&ha->hardware_lock, flags); 1088f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary while (1) { 10897664a1fd76d2eb49b07443f5fc46c75f6a95c98bVikas Chaudhary if (!(readl(&ha->qla4_82xx_reg->host_int) & 1090f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary ISRX_82XX_RISC_INT)) { 1091f8086f4fd462195a5a824c851997bd12ffceae00Vikas Chaudhary qla4_82xx_spurious_interrupt(ha, reqs_count); 1092f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary break; 1093f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary } 1094f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 10957664a1fd76d2eb49b07443f5fc46c75f6a95c98bVikas Chaudhary intr_status = readl(&ha->qla4_82xx_reg->host_status); 1096f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary if ((intr_status & 1097f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary (HSRX_RISC_MB_INT | HSRX_RISC_IOCB_INT)) == 0) { 1098f8086f4fd462195a5a824c851997bd12ffceae00Vikas Chaudhary qla4_82xx_spurious_interrupt(ha, reqs_count); 1099f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary break; 1100afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu } 1101f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 1102f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary ha->isp_ops->interrupt_service_routine(ha, intr_status); 1103f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 1104f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary if (++reqs_count == MAX_REQS_SERVICED_PER_INTR) 1105f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary break; 1106afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu } 1107afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 1108f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary ha->isr_count++; 1109afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 1110f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary return IRQ_HANDLED; 1111f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary} 1112afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 1113f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudharyirqreturn_t 1114f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudharyqla4_8xxx_msix_rsp_q(int irq, void *dev_id) 1115f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary{ 1116f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary struct scsi_qla_host *ha = dev_id; 1117f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary unsigned long flags; 1118f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 1119f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary spin_lock_irqsave(&ha->hardware_lock, flags); 1120f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary qla4xxx_process_response_queue(ha); 11217664a1fd76d2eb49b07443f5fc46c75f6a95c98bVikas Chaudhary writel(0, &ha->qla4_82xx_reg->host_int); 1122f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary spin_unlock_irqrestore(&ha->hardware_lock, flags); 1123f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 1124f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary ha->isr_count++; 1125afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu return IRQ_HANDLED; 1126afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu} 1127afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 1128afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu/** 1129afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * qla4xxx_process_aen - processes AENs generated by firmware 1130afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * @ha: pointer to host adapter structure. 1131afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * @process_aen: type of AENs to process 1132afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * 1133afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * Processes specific types of Asynchronous Events generated by firmware. 1134afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * The type of AENs to process is specified by process_aen and can be 1135afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * PROCESS_ALL_AENS 0 1136afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * FLUSH_DDB_CHANGED_AENS 1 1137afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu * RELOGIN_DDB_CHANGED_AENS 2 1138afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu **/ 1139afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajuluvoid qla4xxx_process_aen(struct scsi_qla_host * ha, uint8_t process_aen) 1140afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu{ 1141afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu uint32_t mbox_sts[MBOX_AEN_REG_COUNT]; 1142afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu struct aen *aen; 1143afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu int i; 1144afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu unsigned long flags; 1145afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 1146afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 1147afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu while (ha->aen_out != ha->aen_in) { 1148afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu aen = &ha->aen_q[ha->aen_out]; 1149afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu /* copy aen information to local structure */ 1150afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu for (i = 0; i < MBOX_AEN_REG_COUNT; i++) 1151afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu mbox_sts[i] = aen->mbox_sts[i]; 1152afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 1153401425b1ea005b39dcc544bffea833f338ba84f6David C Somayajulu ha->aen_q_count++; 1154401425b1ea005b39dcc544bffea833f338ba84f6David C Somayajulu ha->aen_out++; 1155401425b1ea005b39dcc544bffea833f338ba84f6David C Somayajulu 1156401425b1ea005b39dcc544bffea833f338ba84f6David C Somayajulu if (ha->aen_out == MAX_AEN_ENTRIES) 1157401425b1ea005b39dcc544bffea833f338ba84f6David C Somayajulu ha->aen_out = 0; 1158401425b1ea005b39dcc544bffea833f338ba84f6David C Somayajulu 1159afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 1160afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 1161401425b1ea005b39dcc544bffea833f338ba84f6David C Somayajulu DEBUG2(printk("qla4xxx(%ld): AEN[%d]=0x%08x, mbx1=0x%08x mbx2=0x%08x" 1162401425b1ea005b39dcc544bffea833f338ba84f6David C Somayajulu " mbx3=0x%08x mbx4=0x%08x\n", ha->host_no, 1163401425b1ea005b39dcc544bffea833f338ba84f6David C Somayajulu (ha->aen_out ? (ha->aen_out-1): (MAX_AEN_ENTRIES-1)), 1164401425b1ea005b39dcc544bffea833f338ba84f6David C Somayajulu mbox_sts[0], mbox_sts[1], mbox_sts[2], 1165401425b1ea005b39dcc544bffea833f338ba84f6David C Somayajulu mbox_sts[3], mbox_sts[4])); 1166afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 1167afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu switch (mbox_sts[0]) { 1168afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu case MBOX_ASTS_DATABASE_CHANGED: 1169b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar switch (process_aen) { 1170b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar case FLUSH_DDB_CHANGED_AENS: 1171afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu DEBUG2(printk("scsi%ld: AEN[%d] %04x, index " 1172afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu "[%d] state=%04x FLUSHED!\n", 1173afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu ha->host_no, ha->aen_out, 1174afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu mbox_sts[0], mbox_sts[2], 1175afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu mbox_sts[3])); 1176afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu break; 1177b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar case PROCESS_ALL_AENS: 1178b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar default: 1179b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar /* Specific device. */ 1180b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar if (mbox_sts[1] == 1) 1181b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar qla4xxx_process_ddb_changed(ha, 1182b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar mbox_sts[2], mbox_sts[3], 1183b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar mbox_sts[4]); 1184b3a271a94d0034dd3bab10b8d8cd432843be629eManish Rangankar break; 1185afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu } 1186afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu } 1187afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 1188afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu } 1189afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 1190afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu} 1191afaf5a2d341d33b66b47c2716a263ce593460a08David Somayajulu 1192f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudharyint qla4xxx_request_irqs(struct scsi_qla_host *ha) 1193f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary{ 1194f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary int ret; 1195f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 1196f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary if (!is_qla8022(ha)) 1197f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary goto try_intx; 1198f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 1199f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary if (ql4xenablemsix == 2) 1200f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary goto try_msi; 1201f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 1202f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary if (ql4xenablemsix == 0 || ql4xenablemsix != 1) 1203f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary goto try_intx; 1204f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 1205f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary /* Trying MSI-X */ 1206f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary ret = qla4_8xxx_enable_msix(ha); 1207f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary if (!ret) { 1208f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary DEBUG2(ql4_printk(KERN_INFO, ha, 1209f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary "MSI-X: Enabled (0x%X).\n", ha->revision_id)); 1210f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary goto irq_attached; 1211f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary } 1212f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 1213f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary ql4_printk(KERN_WARNING, ha, 1214f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary "MSI-X: Falling back-to MSI mode -- %d.\n", ret); 1215f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 1216f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudharytry_msi: 1217f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary /* Trying MSI */ 1218f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary ret = pci_enable_msi(ha->pdev); 1219f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary if (!ret) { 1220f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary ret = request_irq(ha->pdev->irq, qla4_8xxx_msi_handler, 122161391d314e856030b2b40b5d6ea22b93de0f1fedShyam Sundar 0, DRIVER_NAME, ha); 1222f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary if (!ret) { 1223f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary DEBUG2(ql4_printk(KERN_INFO, ha, "MSI: Enabled.\n")); 1224f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary set_bit(AF_MSI_ENABLED, &ha->flags); 1225f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary goto irq_attached; 1226f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary } else { 1227f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary ql4_printk(KERN_WARNING, ha, 1228f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary "MSI: Failed to reserve interrupt %d " 1229f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary "already in use.\n", ha->pdev->irq); 1230f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary pci_disable_msi(ha->pdev); 1231f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary } 1232f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary } 1233f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary ql4_printk(KERN_WARNING, ha, 1234f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary "MSI: Falling back-to INTx mode -- %d.\n", ret); 1235f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 1236f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudharytry_intx: 1237f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary /* Trying INTx */ 1238f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler, 12393e1350c4dc8900476c4db2066c00f13e9e939817Vikas Chaudhary IRQF_SHARED, DRIVER_NAME, ha); 1240f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary if (!ret) { 1241f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary DEBUG2(ql4_printk(KERN_INFO, ha, "INTx: Enabled.\n")); 1242f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary set_bit(AF_INTx_ENABLED, &ha->flags); 1243f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary goto irq_attached; 1244f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 1245f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary } else { 1246f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary ql4_printk(KERN_WARNING, ha, 1247f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary "INTx: Failed to reserve interrupt %d already in" 1248f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary " use.\n", ha->pdev->irq); 1249f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary return ret; 1250f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary } 1251f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 1252f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudharyirq_attached: 1253f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary set_bit(AF_IRQ_ATTACHED, &ha->flags); 1254f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary ha->host->irq = ha->pdev->irq; 1255f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary ql4_printk(KERN_INFO, ha, "%s: irq %d attached\n", 1256f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary __func__, ha->pdev->irq); 1257f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary return ret; 1258f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary} 1259f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary 1260f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudharyvoid qla4xxx_free_irqs(struct scsi_qla_host *ha) 1261f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary{ 1262f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary if (test_bit(AF_MSIX_ENABLED, &ha->flags)) 1263f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary qla4_8xxx_disable_msix(ha); 1264f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary else if (test_and_clear_bit(AF_MSI_ENABLED, &ha->flags)) { 1265f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary free_irq(ha->pdev->irq, ha); 1266f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary pci_disable_msi(ha->pdev); 1267f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary } else if (test_and_clear_bit(AF_INTx_ENABLED, &ha->flags)) 1268f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary free_irq(ha->pdev->irq, ha); 1269f4f5df23bf72208d0c2f1d8be629839924c2f4c2Vikas Chaudhary} 1270