/******************************************************************* * This file is part of the Emulex Linux Device Driver for * * Enterprise Fibre Channel Host Bus Adapters. * * Refer to the README file included with this package for * * driver version and adapter support. * * Copyright (C) 2004 Emulex Corporation. * * www.emulex.com * * * * This program is free software; you can redistribute it and/or * * modify it under the terms of the GNU General Public License * * as published by the Free Software Foundation; either version 2 * * of the License, or (at your option) any later version. * * * * This program is distributed in the hope that it will be useful, * * but WITHOUT ANY WARRANTY; without even the implied warranty of * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * * GNU General Public License for more details, a copy of which * * can be found in the file COPYING included with this package. * *******************************************************************/ /* * $Id: lpfc_sli.c 1.232 2005/04/13 11:59:16EDT sf_support Exp $ */ #include #include #include #include #include #include #include #include "lpfc_hw.h" #include "lpfc_sli.h" #include "lpfc_disc.h" #include "lpfc_scsi.h" #include "lpfc.h" #include "lpfc_crtn.h" #include "lpfc_logmsg.h" #include "lpfc_compat.h" /* * Define macro to log: Mailbox command x%x cannot issue Data * This allows multiple uses of lpfc_msgBlk0311 * w/o perturbing log msg utility. */ #define LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag) \ lpfc_printf_log(phba, \ KERN_INFO, \ LOG_MBOX | LOG_SLI, \ "%d:0311 Mailbox command x%x cannot issue " \ "Data: x%x x%x x%x\n", \ phba->brd_no, \ mb->mbxCommand, \ phba->hba_state, \ psli->sli_flag, \ flag); /* There are only four IOCB completion types. */ typedef enum _lpfc_iocb_type { LPFC_UNKNOWN_IOCB, LPFC_UNSOL_IOCB, LPFC_SOL_IOCB, LPFC_ABORT_IOCB } lpfc_iocb_type; /* * Translate the iocb command to an iocb command type used to decide the final * disposition of each completed IOCB. */ static lpfc_iocb_type lpfc_sli_iocb_cmd_type(uint8_t iocb_cmnd) { lpfc_iocb_type type = LPFC_UNKNOWN_IOCB; if (iocb_cmnd > CMD_MAX_IOCB_CMD) return 0; switch (iocb_cmnd) { case CMD_XMIT_SEQUENCE_CR: case CMD_XMIT_SEQUENCE_CX: case CMD_XMIT_BCAST_CN: case CMD_XMIT_BCAST_CX: case CMD_ELS_REQUEST_CR: case CMD_ELS_REQUEST_CX: case CMD_CREATE_XRI_CR: case CMD_CREATE_XRI_CX: case CMD_GET_RPI_CN: case CMD_XMIT_ELS_RSP_CX: case CMD_GET_RPI_CR: case CMD_FCP_IWRITE_CR: case CMD_FCP_IWRITE_CX: case CMD_FCP_IREAD_CR: case CMD_FCP_IREAD_CX: case CMD_FCP_ICMND_CR: case CMD_FCP_ICMND_CX: case CMD_ADAPTER_MSG: case CMD_ADAPTER_DUMP: case CMD_XMIT_SEQUENCE64_CR: case CMD_XMIT_SEQUENCE64_CX: case CMD_XMIT_BCAST64_CN: case CMD_XMIT_BCAST64_CX: case CMD_ELS_REQUEST64_CR: case CMD_ELS_REQUEST64_CX: case CMD_FCP_IWRITE64_CR: case CMD_FCP_IWRITE64_CX: case CMD_FCP_IREAD64_CR: case CMD_FCP_IREAD64_CX: case CMD_FCP_ICMND64_CR: case CMD_FCP_ICMND64_CX: case CMD_GEN_REQUEST64_CR: case CMD_GEN_REQUEST64_CX: case CMD_XMIT_ELS_RSP64_CX: type = LPFC_SOL_IOCB; break; case CMD_ABORT_XRI_CN: case CMD_ABORT_XRI_CX: case CMD_CLOSE_XRI_CN: case CMD_CLOSE_XRI_CX: case CMD_XRI_ABORTED_CX: case CMD_ABORT_MXRI64_CN: type = LPFC_ABORT_IOCB; break; case CMD_RCV_SEQUENCE_CX: case CMD_RCV_ELS_REQ_CX: case CMD_RCV_SEQUENCE64_CX: case CMD_RCV_ELS_REQ64_CX: type = LPFC_UNSOL_IOCB; break; default: type = LPFC_UNKNOWN_IOCB; break; } return type; } static int lpfc_sli_ring_map(struct lpfc_hba * phba, LPFC_MBOXQ_t *pmb) { struct lpfc_sli *psli = &phba->sli; MAILBOX_t *pmbox = &pmb->mb; int i, rc; for (i = 0; i < psli->num_rings; i++) { phba->hba_state = LPFC_INIT_MBX_CMDS; lpfc_config_ring(phba, i, pmb); rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL); if (rc != MBX_SUCCESS) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "%d:0446 Adapter failed to init, " "mbxCmd x%x CFG_RING, mbxStatus x%x, " "ring %d\n", phba->brd_no, pmbox->mbxCommand, pmbox->mbxStatus, i); phba->hba_state = LPFC_HBA_ERROR; return -ENXIO; } } return 0; } static int lpfc_sli_ringtxcmpl_put(struct lpfc_hba * phba, struct lpfc_sli_ring * pring, struct lpfc_iocbq * piocb) { uint16_t iotag; list_add_tail(&piocb->list, &pring->txcmplq); pring->txcmplq_cnt++; if (unlikely(pring->ringno == LPFC_ELS_RING)) mod_timer(&phba->els_tmofunc, jiffies + HZ * (phba->fc_ratov << 1)); if (pring->fast_lookup) { /* Setup fast lookup based on iotag for completion */ iotag = piocb->iocb.ulpIoTag; if (iotag && (iotag < pring->fast_iotag)) *(pring->fast_lookup + iotag) = piocb; else { /* Cmd ring put: iotag greater then configured max wd0 */ lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "%d:0316 Cmd ring %d put: iotag x%x " "greater then configured max x%x " "wd0 x%x\n", phba->brd_no, pring->ringno, iotag, pring->fast_iotag, *(((uint32_t *)(&piocb->iocb)) + 7)); } } return (0); } static struct lpfc_iocbq * lpfc_sli_ringtx_get(struct lpfc_hba * phba, struct lpfc_sli_ring * pring) { struct list_head *dlp; struct lpfc_iocbq *cmd_iocb; dlp = &pring->txq; cmd_iocb = NULL; list_remove_head((&pring->txq), cmd_iocb, struct lpfc_iocbq, list); if (cmd_iocb) { /* If the first ptr is not equal to the list header, * deque the IOCBQ_t and return it. */ pring->txq_cnt--; } return (cmd_iocb); } static IOCB_t * lpfc_sli_next_iocb_slot (struct lpfc_hba *phba, struct lpfc_sli_ring *pring) { struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[pring->ringno]; uint32_t max_cmd_idx = pring->numCiocb; IOCB_t *iocb = NULL; if ((pring->next_cmdidx == pring->cmdidx) && (++pring->next_cmdidx >= max_cmd_idx)) pring->next_cmdidx = 0; if (unlikely(pring->local_getidx == pring->next_cmdidx)) { pring->local_getidx = le32_to_cpu(pgp->cmdGetInx); if (unlikely(pring->local_getidx >= max_cmd_idx)) { lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "%d:0315 Ring %d issue: portCmdGet %d " "is bigger then cmd ring %d\n", phba->brd_no, pring->ringno, pring->local_getidx, max_cmd_idx); phba->hba_state = LPFC_HBA_ERROR; /* * All error attention handlers are posted to * worker thread */ phba->work_ha |= HA_ERATT; phba->work_hs = HS_FFER3; if (phba->work_wait) wake_up(phba->work_wait); return NULL; } if (pring->local_getidx == pring->next_cmdidx) return NULL; } iocb = IOCB_ENTRY(pring->cmdringaddr, pring->cmdidx); return iocb; } static uint32_t lpfc_sli_next_iotag(struct lpfc_hba * phba, struct lpfc_sli_ring * pring) { uint32_t search_start; if (pring->fast_lookup == NULL) { pring->iotag_ctr++; if (pring->iotag_ctr >= pring->iotag_max) pring->iotag_ctr = 1; return pring->iotag_ctr; } search_start = pring->iotag_ctr; do { pring->iotag_ctr++; if (pring->iotag_ctr >= pring->fast_iotag) pring->iotag_ctr = 1; if (*(pring->fast_lookup + pring->iotag_ctr) == NULL) return pring->iotag_ctr; } while (pring->iotag_ctr != search_start); /* * Outstanding I/O count for ring is at max */ lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "%d:0318 Outstanding I/O count for ring %d is at max x%x\n", phba->brd_no, pring->ringno, pring->fast_iotag); return (0); } static void lpfc_sli_submit_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, IOCB_t *iocb, struct lpfc_iocbq *nextiocb) { /* * Allocate and set up an iotag */ nextiocb->iocb.ulpIoTag = lpfc_sli_next_iotag(phba, &phba->sli.ring[phba->sli.fcp_ring]); /* * Issue iocb command to adapter */ lpfc_sli_pcimem_bcopy(&nextiocb->iocb, iocb, sizeof (IOCB_t)); wmb(); pring->stats.iocb_cmd++; /* * If there is no completion routine to call, we can release the * IOCB buffer back right now. For IOCBs, like QUE_RING_BUF, * that have no rsp ring completion, iocb_cmpl MUST be NULL. */ if (nextiocb->iocb_cmpl) lpfc_sli_ringtxcmpl_put(phba, pring, nextiocb); else { list_add_tail(&nextiocb->list, &phba->lpfc_iocb_list); } /* * Let the HBA know what IOCB slot will be the next one the * driver will put a command into. */ pring->cmdidx = pring->next_cmdidx; writeb(pring->cmdidx, phba->MBslimaddr + (SLIMOFF + (pring->ringno * 2)) * 4); } static void lpfc_sli_update_full_ring(struct lpfc_hba * phba, struct lpfc_sli_ring *pring) { int ringno = pring->ringno; pring->flag |= LPFC_CALL_RING_AVAILABLE; wmb(); /* * Set ring 'ringno' to SET R0CE_REQ in Chip Att register. * The HBA will tell us when an IOCB entry is available. */ writel((CA_R0ATT|CA_R0CE_REQ) << (ringno*4), phba->CAregaddr); readl(phba->CAregaddr); /* flush */ pring->stats.iocb_cmd_full++; } static void lpfc_sli_update_ring(struct lpfc_hba * phba, struct lpfc_sli_ring *pring) { int ringno = pring->ringno; /* * Tell the HBA that there is work to do in this ring. */ wmb(); writel(CA_R0ATT << (ringno * 4), phba->CAregaddr); readl(phba->CAregaddr); /* flush */ } static void lpfc_sli_resume_iocb(struct lpfc_hba * phba, struct lpfc_sli_ring * pring) { IOCB_t *iocb; struct lpfc_iocbq *nextiocb; /* * Check to see if: * (a) there is anything on the txq to send * (b) link is up * (c) link attention events can be processed (fcp ring only) * (d) IOCB processing is not blocked by the outstanding mbox command. */ if (pring->txq_cnt && (phba->hba_state > LPFC_LINK_DOWN) && (pring->ringno != phba->sli.fcp_ring || phba->sli.sli_flag & LPFC_PROCESS_LA) && !(pring->flag & LPFC_STOP_IOCB_MBX)) { while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) && (nextiocb = lpfc_sli_ringtx_get(phba, pring))) lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb); if (iocb) lpfc_sli_update_ring(phba, pring); else lpfc_sli_update_full_ring(phba, pring); } return; } /* lpfc_sli_turn_on_ring is only called by lpfc_sli_handle_mb_event below */ static void lpfc_sli_turn_on_ring(struct lpfc_hba * phba, int ringno) { struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[ringno]; /* If the ring is active, flag it */ if (phba->sli.ring[ringno].cmdringaddr) { if (phba->sli.ring[ringno].flag & LPFC_STOP_IOCB_MBX) { phba->sli.ring[ringno].flag &= ~LPFC_STOP_IOCB_MBX; /* * Force update of the local copy of cmdGetInx */ phba->sli.ring[ringno].local_getidx = le32_to_cpu(pgp->cmdGetInx); spin_lock_irq(phba->host->host_lock); lpfc_sli_resume_iocb(phba, &phba->sli.ring[ringno]); spin_unlock_irq(phba->host->host_lock); } } } static int lpfc_sli_chk_mbx_command(uint8_t mbxCommand) { uint8_t ret; switch (mbxCommand) { case MBX_LOAD_SM: case MBX_READ_NV: case MBX_WRITE_NV: case MBX_RUN_BIU_DIAG: case MBX_INIT_LINK: case MBX_DOWN_LINK: case MBX_CONFIG_LINK: case MBX_CONFIG_RING: case MBX_RESET_RING: case MBX_READ_CONFIG: case MBX_READ_RCONFIG: case MBX_READ_SPARM: case MBX_READ_STATUS: case MBX_READ_RPI: case MBX_READ_XRI: case MBX_READ_REV: case MBX_READ_LNK_STAT: case MBX_REG_LOGIN: case MBX_UNREG_LOGIN: case MBX_READ_LA: case MBX_CLEAR_LA: case MBX_DUMP_MEMORY: case MBX_DUMP_CONTEXT: case MBX_RUN_DIAGS: case MBX_RESTART: case MBX_UPDATE_CFG: case MBX_DOWN_LOAD: case MBX_DEL_LD_ENTRY: case MBX_RUN_PROGRAM: case MBX_SET_MASK: case MBX_SET_SLIM: case MBX_UNREG_D_ID: case MBX_CONFIG_FARP: case MBX_LOAD_AREA: case MBX_RUN_BIU_DIAG64: case MBX_CONFIG_PORT: case MBX_READ_SPARM64: case MBX_READ_RPI64: case MBX_REG_LOGIN64: case MBX_READ_LA64: case MBX_FLASH_WR_ULA: case MBX_SET_DEBUG: case MBX_LOAD_EXP_ROM: ret = mbxCommand; break; default: ret = MBX_SHUTDOWN; break; } return (ret); } static void lpfc_sli_wake_mbox_wait(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq) { wait_queue_head_t *pdone_q; /* * If pdone_q is empty, the driver thread gave up waiting and * continued running. */ pdone_q = (wait_queue_head_t *) pmboxq->context1; if (pdone_q) wake_up_interruptible(pdone_q); return; } void lpfc_sli_def_mbox_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb) { struct lpfc_dmabuf *mp; mp = (struct lpfc_dmabuf *) (pmb->context1); if (mp) { lpfc_mbuf_free(phba, mp->virt, mp->phys); kfree(mp); } mempool_free( pmb, phba->mbox_mem_pool); return; } int lpfc_sli_handle_mb_event(struct lpfc_hba * phba) { MAILBOX_t *mbox; MAILBOX_t *pmbox; LPFC_MBOXQ_t *pmb; struct lpfc_sli *psli; int i, rc; uint32_t process_next; psli = &phba->sli; /* We should only get here if we are in SLI2 mode */ if (!(phba->sli.sli_flag & LPFC_SLI2_ACTIVE)) { return (1); } phba->sli.slistat.mbox_event++; /* Get a Mailbox buffer to setup mailbox commands for callback */ if ((pmb = phba->sli.mbox_active)) { pmbox = &pmb->mb; mbox = &phba->slim2p->mbx; /* First check out the status word */ lpfc_sli_pcimem_bcopy(mbox, pmbox, sizeof (uint32_t)); /* Sanity check to ensure the host owns the mailbox */ if (pmbox->mbxOwner != OWN_HOST) { /* Lets try for a while */ for (i = 0; i < 10240; i++) { /* First copy command data */ lpfc_sli_pcimem_bcopy(mbox, pmbox, sizeof (uint32_t)); if (pmbox->mbxOwner == OWN_HOST) goto mbout; } /* Stray Mailbox Interrupt, mbxCommand mbxStatus */ lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, "%d:0304 Stray Mailbox Interrupt " "mbxCommand x%x mbxStatus x%x\n", phba->brd_no, pmbox->mbxCommand, pmbox->mbxStatus); spin_lock_irq(phba->host->host_lock); phba->sli.sli_flag |= LPFC_SLI_MBOX_ACTIVE; spin_unlock_irq(phba->host->host_lock); return (1); } mbout: del_timer_sync(&phba->sli.mbox_tmo); phba->work_hba_events &= ~WORKER_MBOX_TMO; /* * It is a fatal error if unknown mbox command completion. */ if (lpfc_sli_chk_mbx_command(pmbox->mbxCommand) == MBX_SHUTDOWN) { /* Unknow mailbox command compl */ lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, "%d:0323 Unknown Mailbox command %x Cmpl\n", phba->brd_no, pmbox->mbxCommand); phba->hba_state = LPFC_HBA_ERROR; phba->work_hs = HS_FFER3; lpfc_handle_eratt(phba); return (0); } phba->sli.mbox_active = NULL; if (pmbox->mbxStatus) { phba->sli.slistat.mbox_stat_err++; if (pmbox->mbxStatus == MBXERR_NO_RESOURCES) { /* Mbox cmd cmpl error - RETRYing */ lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI, "%d:0305 Mbox cmd cmpl error - " "RETRYing Data: x%x x%x x%x x%x\n", phba->brd_no, pmbox->mbxCommand, pmbox->mbxStatus, pmbox->un.varWords[0], phba->hba_state); pmbox->mbxStatus = 0; pmbox->mbxOwner = OWN_HOST; spin_lock_irq(phba->host->host_lock); phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; spin_unlock_irq(phba->host->host_lock); rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT); if (rc == MBX_SUCCESS) return (0); } } /* Mailbox cmd Cmpl */ lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI, "%d:0307 Mailbox cmd x%x Cmpl x%p " "Data: x%x x%x x%x x%x x%x x%x x%x x%x x%x\n", phba->brd_no, pmbox->mbxCommand, pmb->mbox_cmpl, *((uint32_t *) pmbox), pmbox->un.varWords[0], pmbox->un.varWords[1], pmbox->un.varWords[2], pmbox->un.varWords[3], pmbox->un.varWords[4], pmbox->un.varWords[5], pmbox->un.varWords[6], pmbox->un.varWords[7]); if (pmb->mbox_cmpl) { lpfc_sli_pcimem_bcopy(mbox, pmbox, MAILBOX_CMD_SIZE); pmb->mbox_cmpl(phba,pmb); } } do { process_next = 0; /* by default don't loop */ spin_lock_irq(phba->host->host_lock); phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; /* Process next mailbox command if there is one */ if ((pmb = lpfc_mbox_get(phba))) { spin_unlock_irq(phba->host->host_lock); rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT); if (rc == MBX_NOT_FINISHED) { pmb->mb.mbxStatus = MBX_NOT_FINISHED; pmb->mbox_cmpl(phba,pmb); process_next = 1; continue; /* loop back */ } } else { spin_unlock_irq(phba->host->host_lock); /* Turn on IOCB processing */ for (i = 0; i < phba->sli.num_rings; i++) { lpfc_sli_turn_on_ring(phba, i); } /* Free any lpfc_dmabuf's waiting for mbox cmd cmpls */ while (!list_empty(&phba->freebufList)) { struct lpfc_dmabuf *mp; mp = NULL; list_remove_head((&phba->freebufList), mp, struct lpfc_dmabuf, list); if (mp) { lpfc_mbuf_free(phba, mp->virt, mp->phys); kfree(mp); } } } } while (process_next); return (0); } static int lpfc_sli_process_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, struct lpfc_iocbq *saveq) { IOCB_t * irsp; WORD5 * w5p; uint32_t Rctl, Type; uint32_t match, i; match = 0; irsp = &(saveq->iocb); if ((irsp->ulpCommand == CMD_RCV_ELS_REQ64_CX) || (irsp->ulpCommand == CMD_RCV_ELS_REQ_CX)) { Rctl = FC_ELS_REQ; Type = FC_ELS_DATA; } else { w5p = (WORD5 *) & (saveq->iocb.un. ulpWord[5]); Rctl = w5p->hcsw.Rctl; Type = w5p->hcsw.Type; /* Firmware Workaround */ if ((Rctl == 0) && (pring->ringno == LPFC_ELS_RING) && (irsp->ulpCommand == CMD_RCV_SEQUENCE64_CX)) { Rctl = FC_ELS_REQ; Type = FC_ELS_DATA; w5p->hcsw.Rctl = Rctl; w5p->hcsw.Type = Type; } } /* unSolicited Responses */ if (pring->prt[0].profile) { (pring->prt[0].lpfc_sli_rcv_unsol_event) (phba, pring, saveq); match = 1; } else { /* We must search, based on rctl / type for the right routine */ for (i = 0; i < pring->num_mask; i++) { if ((pring->prt[i].rctl == Rctl) && (pring->prt[i]. type == Type)) { (pring->prt[i].lpfc_sli_rcv_unsol_event) (phba, pring, saveq); match = 1; break; } } } if (match == 0) { /* Unexpected Rctl / Type received */ /* Ring handler: unexpected Rctl Type received */ lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, "%d:0313 Ring %d handler: unexpected Rctl x%x " "Type x%x received \n", phba->brd_no, pring->ringno, Rctl, Type); } return(1); } static struct lpfc_iocbq * lpfc_sli_txcmpl_ring_search_slow(struct lpfc_sli_ring * pring, struct lpfc_iocbq * prspiocb) { IOCB_t *icmd = NULL; IOCB_t *irsp = NULL; struct lpfc_iocbq *cmd_iocb; struct lpfc_iocbq *iocb, *next_iocb; uint16_t iotag; irsp = &prspiocb->iocb; iotag = irsp->ulpIoTag; cmd_iocb = NULL; /* Search through txcmpl from the begining */ list_for_each_entry_safe(iocb, next_iocb, &(pring->txcmplq), list) { icmd = &iocb->iocb; if (iotag == icmd->ulpIoTag) { /* Found a match. */ cmd_iocb = iocb; list_del(&iocb->list); pring->txcmplq_cnt--; break; } } return (cmd_iocb); } static struct lpfc_iocbq * lpfc_sli_txcmpl_ring_iotag_lookup(struct lpfc_hba * phba, struct lpfc_sli_ring * pring, struct lpfc_iocbq * prspiocb) { IOCB_t *irsp = NULL; struct lpfc_iocbq *cmd_iocb = NULL; uint16_t iotag; if (unlikely(pring->fast_lookup == NULL)) return NULL; /* Use fast lookup based on iotag for completion */ irsp = &prspiocb->iocb; iotag = irsp->ulpIoTag; if (iotag < pring->fast_iotag) { cmd_iocb = *(pring->fast_lookup + iotag); *(pring->fast_lookup + iotag) = NULL; if (cmd_iocb) { list_del(&cmd_iocb->list); pring->txcmplq_cnt--; return cmd_iocb; } else { /* * This is clearly an error. A ring that uses iotags * should never have a interrupt for a completion that * is not on the ring. Return NULL and log a error. */ lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "%d:0327 Rsp ring %d error - command " "completion for iotag x%x not found\n", phba->brd_no, pring->ringno, iotag); return NULL; } } /* * Rsp ring get: iotag greater then * configured max wd0 . This is an * error. Just return NULL. */ lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "%d:0317 Rsp ring %d get: iotag x%x greater then " "configured max x%x wd0 x%x\n", phba->brd_no, pring->ringno, iotag, pring->fast_iotag, *(((uint32_t *) irsp) + 7)); return NULL; } static int lpfc_sli_process_sol_iocb(struct lpfc_hba * phba, struct lpfc_sli_ring * pring, struct lpfc_iocbq *saveq) { struct lpfc_iocbq * cmdiocbp; int rc = 1; unsigned long iflag; /* Based on the iotag field, get the cmd IOCB from the txcmplq */ spin_lock_irqsave(phba->host->host_lock, iflag); cmdiocbp = lpfc_sli_txcmpl_ring_search_slow(pring, saveq); if (cmdiocbp) { if (cmdiocbp->iocb_cmpl) { /* * Post all ELS completions to the worker thread. * All other are passed to the completion callback. */ if (pring->ringno == LPFC_ELS_RING) { spin_unlock_irqrestore(phba->host->host_lock, iflag); (cmdiocbp->iocb_cmpl) (phba, cmdiocbp, saveq); spin_lock_irqsave(phba->host->host_lock, iflag); } else { if (cmdiocbp->iocb_flag & LPFC_IO_POLL) rc = 0; spin_unlock_irqrestore(phba->host->host_lock, iflag); (cmdiocbp->iocb_cmpl) (phba, cmdiocbp, saveq); spin_lock_irqsave(phba->host->host_lock, iflag); } } else { list_add_tail(&cmdiocbp->list, &phba->lpfc_iocb_list); } } else { /* * Unknown initiating command based on the response iotag. * This could be the case on the ELS ring because of * lpfc_els_abort(). */ if (pring->ringno != LPFC_ELS_RING) { /* * Ring handler: unexpected completion IoTag * */ lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, "%d:0322 Ring %d handler: unexpected " "completion IoTag x%x Data: x%x x%x x%x x%x\n", phba->brd_no, pring->ringno, saveq->iocb.ulpIoTag, saveq->iocb.ulpStatus, saveq->iocb.un.ulpWord[4], saveq->iocb.ulpCommand, saveq->iocb.ulpContext); } } spin_unlock_irqrestore(phba->host->host_lock, iflag); return rc; } /* * This routine presumes LPFC_FCP_RING handling and doesn't bother * to check it explicitly. */ static int lpfc_sli_handle_fast_ring_event(struct lpfc_hba * phba, struct lpfc_sli_ring * pring, uint32_t mask) { struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[pring->ringno]; IOCB_t *irsp = NULL; struct lpfc_iocbq *cmdiocbq = NULL; struct lpfc_iocbq rspiocbq; uint32_t status; uint32_t portRspPut, portRspMax; int rc = 1; lpfc_iocb_type type; unsigned long iflag; uint32_t rsp_cmpl = 0; void __iomem *to_slim; spin_lock_irqsave(phba->host->host_lock, iflag); pring->stats.iocb_event++; /* * The next available response entry should never exceed the maximum * entries. If it does, treat it as an adapter hardware error. */ portRspMax = pring->numRiocb; portRspPut = le32_to_cpu(pgp->rspPutInx); if (unlikely(portRspPut >= portRspMax)) { /* * Ring handler: portRspPut is bigger then * rsp ring */ lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "%d:0312 Ring %d handler: portRspPut %d " "is bigger then rsp ring %d\n", phba->brd_no, pring->ringno, portRspPut, portRspMax); phba->hba_state = LPFC_HBA_ERROR; /* All error attention handlers are posted to worker thread */ phba->work_ha |= HA_ERATT; phba->work_hs = HS_FFER3; if (phba->work_wait) wake_up(phba->work_wait); spin_unlock_irqrestore(phba->host->host_lock, iflag); return 1; } rmb(); while (pring->rspidx != portRspPut) { irsp = (IOCB_t *) IOCB_ENTRY(pring->rspringaddr, pring->rspidx); type = lpfc_sli_iocb_cmd_type(irsp->ulpCommand & CMD_IOCB_MASK); pring->stats.iocb_rsp++; rsp_cmpl++; if (unlikely(irsp->ulpStatus)) { /* Rsp ring error: IOCB */ lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, "%d:0326 Rsp Ring %d error: IOCB Data: " "x%x x%x x%x x%x x%x x%x x%x x%x\n", phba->brd_no, pring->ringno, irsp->un.ulpWord[0], irsp->un.ulpWord[1], irsp->un.ulpWord[2], irsp->un.ulpWord[3], irsp->un.ulpWord[4], irsp->un.ulpWord[5], *(((uint32_t *) irsp) + 6), *(((uint32_t *) irsp) + 7)); } switch (type) { case LPFC_ABORT_IOCB: case LPFC_SOL_IOCB: /* * Idle exchange closed via ABTS from port. No iocb * resources need to be recovered. */ if (unlikely(irsp->ulpCommand == CMD_XRI_ABORTED_CX)) { printk(KERN_INFO "%s: IOCB cmd 0x%x processed. " "Skipping completion\n", __FUNCTION__, irsp->ulpCommand); break; } rspiocbq.iocb.un.ulpWord[4] = irsp->un.ulpWord[4]; rspiocbq.iocb.ulpStatus = irsp->ulpStatus; rspiocbq.iocb.ulpContext = irsp->ulpContext; rspiocbq.iocb.ulpIoTag = irsp->ulpIoTag; cmdiocbq = lpfc_sli_txcmpl_ring_iotag_lookup(phba, pring, &rspiocbq); if ((cmdiocbq) && (cmdiocbq->iocb_cmpl)) { spin_unlock_irqrestore( phba->host->host_lock, iflag); (cmdiocbq->iocb_cmpl)(phba, cmdiocbq, &rspiocbq); spin_lock_irqsave(phba->host->host_lock, iflag); } break; default: if (irsp->ulpCommand == CMD_ADAPTER_MSG) { char adaptermsg[LPFC_MAX_ADPTMSG]; memset(adaptermsg, 0, LPFC_MAX_ADPTMSG); memcpy(&adaptermsg[0], (uint8_t *) irsp, MAX_MSG_DATA); dev_warn(&((phba->pcidev)->dev), "lpfc%d: %s", phba->brd_no, adaptermsg); } else { /* Unknown IOCB command */ lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "%d:0321 Unknown IOCB command " "Data: x%x, x%x x%x x%x x%x\n", phba->brd_no, type, irsp->ulpCommand, irsp->ulpStatus, irsp->ulpIoTag, irsp->ulpContext); } break; } /* * The response IOCB has been processed. Update the ring * pointer in SLIM. If the port response put pointer has not * been updated, sync the pgp->rspPutInx and fetch the new port * response put pointer. */ if (++pring->rspidx >= portRspMax) pring->rspidx = 0; to_slim = phba->MBslimaddr + (SLIMOFF + (pring->ringno * 2) + 1) * 4; writeb(pring->rspidx, to_slim); if (pring->rspidx == portRspPut) portRspPut = le32_to_cpu(pgp->rspPutInx); } if ((rsp_cmpl > 0) && (mask & HA_R0RE_REQ)) { pring->stats.iocb_rsp_full++; status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4)); writel(status, phba->CAregaddr); readl(phba->CAregaddr); } if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) { pring->flag &= ~LPFC_CALL_RING_AVAILABLE; pring->stats.iocb_cmd_empty++; /* Force update of the local copy of cmdGetInx */ pring->local_getidx = le32_to_cpu(pgp->cmdGetInx); lpfc_sli_resume_iocb(phba, pring); if ((pring->lpfc_sli_cmd_available)) (pring->lpfc_sli_cmd_available) (phba, pring); } spin_unlock_irqrestore(phba->host->host_lock, iflag); return rc; } int lpfc_sli_handle_slow_ring_event(struct lpfc_hba * phba, struct lpfc_sli_ring * pring, uint32_t mask) { IOCB_t *entry; IOCB_t *irsp = NULL; struct lpfc_iocbq *rspiocbp = NULL; struct lpfc_iocbq *next_iocb; struct lpfc_iocbq *cmdiocbp; struct lpfc_iocbq *saveq; struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list; struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[pring->ringno]; uint8_t iocb_cmd_type; lpfc_iocb_type type; uint32_t status, free_saveq; uint32_t portRspPut, portRspMax; int rc = 1; unsigned long iflag; void __iomem *to_slim; spin_lock_irqsave(phba->host->host_lock, iflag); pring->stats.iocb_event++; /* * The next available response entry should never exceed the maximum * entries. If it does, treat it as an adapter hardware error. */ portRspMax = pring->numRiocb; portRspPut = le32_to_cpu(pgp->rspPutInx); if (portRspPut >= portRspMax) { /* * Ring handler: portRspPut is bigger then * rsp ring */ lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "%d:0312 Ring %d handler: portRspPut %d " "is bigger then rsp ring %d\n", phba->brd_no, pring->ringno, portRspPut, portRspMax); phba->hba_state = LPFC_HBA_ERROR; spin_unlock_irqrestore(phba->host->host_lock, iflag); phba->work_hs = HS_FFER3; lpfc_handle_eratt(phba); return 1; } rmb(); lpfc_iocb_list = &phba->lpfc_iocb_list; while (pring->rspidx != portRspPut) { /* * Build a completion list and call the appropriate handler. * The process is to get the next available response iocb, get * a free iocb from the list, copy the response data into the * free iocb, insert to the continuation list, and update the * next response index to slim. This process makes response * iocb's in the ring available to DMA as fast as possible but * pays a penalty for a copy operation. Since the iocb is * only 32 bytes, this penalty is considered small relative to * the PCI reads for register values and a slim write. When * the ulpLe field is set, the entire Command has been * received. */ entry = IOCB_ENTRY(pring->rspringaddr, pring->rspidx); list_remove_head(lpfc_iocb_list, rspiocbp, struct lpfc_iocbq, list); if (rspiocbp == NULL) { printk(KERN_ERR "%s: out of buffers! Failing " "completion.\n", __FUNCTION__); break; } lpfc_sli_pcimem_bcopy(entry, &rspiocbp->iocb, sizeof (IOCB_t)); irsp = &rspiocbp->iocb; if (++pring->rspidx >= portRspMax) pring->rspidx = 0; to_slim = phba->MBslimaddr + (SLIMOFF + (pring->ringno * 2) + 1) * 4; writeb(pring->rspidx, to_slim); if (list_empty(&(pring->iocb_continueq))) { list_add(&rspiocbp->list, &(pring->iocb_continueq)); } else { list_add_tail(&rspiocbp->list, &(pring->iocb_continueq)); } pring->iocb_continueq_cnt++; if (irsp->ulpLe) { /* * By default, the driver expects to free all resources * associated with this iocb completion. */ free_saveq = 1; saveq = list_get_first(&pring->iocb_continueq, struct lpfc_iocbq, list); irsp = &(saveq->iocb); list_del_init(&pring->iocb_continueq); pring->iocb_continueq_cnt = 0; pring->stats.iocb_rsp++; if (irsp->ulpStatus) { /* Rsp ring error: IOCB */ lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, "%d:0328 Rsp Ring %d error: IOCB Data: " "x%x x%x x%x x%x x%x x%x x%x x%x\n", phba->brd_no, pring->ringno, irsp->un.ulpWord[0], irsp->un.ulpWord[1], irsp->un.ulpWord[2], irsp->un.ulpWord[3], irsp->un.ulpWord[4], irsp->un.ulpWord[5], *(((uint32_t *) irsp) + 6), *(((uint32_t *) irsp) + 7)); } /* * Fetch the IOCB command type and call the correct * completion routine. Solicited and Unsolicited * IOCBs on the ELS ring get freed back to the * lpfc_iocb_list by the discovery kernel thread. */ iocb_cmd_type = irsp->ulpCommand & CMD_IOCB_MASK; type = lpfc_sli_iocb_cmd_type(iocb_cmd_type); if (type == LPFC_SOL_IOCB) { spin_unlock_irqrestore(phba->host->host_lock, iflag); rc = lpfc_sli_process_sol_iocb(phba, pring, saveq); spin_lock_irqsave(phba->host->host_lock, iflag); } else if (type == LPFC_UNSOL_IOCB) { spin_unlock_irqrestore(phba->host->host_lock, iflag); rc = lpfc_sli_process_unsol_iocb(phba, pring, saveq); spin_lock_irqsave(phba->host->host_lock, iflag); } else if (type == LPFC_ABORT_IOCB) { if ((irsp->ulpCommand != CMD_XRI_ABORTED_CX) && ((cmdiocbp = lpfc_sli_txcmpl_ring_search_slow(pring, saveq)))) { /* Call the specified completion routine */ if (cmdiocbp->iocb_cmpl) { spin_unlock_irqrestore( phba->host->host_lock, iflag); (cmdiocbp->iocb_cmpl) (phba, cmdiocbp, saveq); spin_lock_irqsave( phba->host->host_lock, iflag); } else { list_add_tail(&cmdiocbp->list, lpfc_iocb_list); } } } else if (type == LPFC_UNKNOWN_IOCB) { if (irsp->ulpCommand == CMD_ADAPTER_MSG) { char adaptermsg[LPFC_MAX_ADPTMSG]; memset(adaptermsg, 0, LPFC_MAX_ADPTMSG); memcpy(&adaptermsg[0], (uint8_t *) irsp, MAX_MSG_DATA); dev_warn(&((phba->pcidev)->dev), "lpfc%d: %s", phba->brd_no, adaptermsg); } else { /* Unknown IOCB command */ lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "%d:0321 Unknown IOCB command " "Data: x%x x%x x%x x%x\n", phba->brd_no, irsp->ulpCommand, irsp->ulpStatus, irsp->ulpIoTag, irsp->ulpContext); } } if (free_saveq) { if (!list_empty(&saveq->list)) { list_for_each_entry_safe(rspiocbp, next_iocb, &saveq->list, list) { list_add_tail(&rspiocbp->list, lpfc_iocb_list); } } list_add_tail(&saveq->list, lpfc_iocb_list); } } /* * If the port response put pointer has not been updated, sync * the pgp->rspPutInx in the MAILBOX_tand fetch the new port * response put pointer. */ if (pring->rspidx == portRspPut) { portRspPut = le32_to_cpu(pgp->rspPutInx); } } /* while (pring->rspidx != portRspPut) */ if ((rspiocbp != 0) && (mask & HA_R0RE_REQ)) { /* At least one response entry has been freed */ pring->stats.iocb_rsp_full++; /* SET RxRE_RSP in Chip Att register */ status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4)); writel(status, phba->CAregaddr); readl(phba->CAregaddr); /* flush */ } if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) { pring->flag &= ~LPFC_CALL_RING_AVAILABLE; pring->stats.iocb_cmd_empty++; /* Force update of the local copy of cmdGetInx */ pring->local_getidx = le32_to_cpu(pgp->cmdGetInx); lpfc_sli_resume_iocb(phba, pring); if ((pring->lpfc_sli_cmd_available)) (pring->lpfc_sli_cmd_available) (phba, pring); } spin_unlock_irqrestore(phba->host->host_lock, iflag); return rc; } int lpfc_sli_abort_iocb_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring) { struct lpfc_iocbq *iocb, *next_iocb; IOCB_t *icmd = NULL, *cmd = NULL; int errcnt; uint16_t iotag; errcnt = 0; /* Error everything on txq and txcmplq * First do the txq. */ spin_lock_irq(phba->host->host_lock); list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) { list_del_init(&iocb->list); if (iocb->iocb_cmpl) { icmd = &iocb->iocb; icmd->ulpStatus = IOSTAT_LOCAL_REJECT; icmd->un.ulpWord[4] = IOERR_SLI_ABORTED; spin_unlock_irq(phba->host->host_lock); (iocb->iocb_cmpl) (phba, iocb, iocb); spin_lock_irq(phba->host->host_lock); } else { list_add_tail(&iocb->list, &phba->lpfc_iocb_list); } } pring->txq_cnt = 0; INIT_LIST_HEAD(&(pring->txq)); /* Next issue ABTS for everything on the txcmplq */ list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) { cmd = &iocb->iocb; /* * Imediate abort of IOCB, clear fast_lookup entry, * if any, deque and call compl */ iotag = cmd->ulpIoTag; if (iotag && pring->fast_lookup && (iotag < pring->fast_iotag)) pring->fast_lookup[iotag] = NULL; list_del_init(&iocb->list); pring->txcmplq_cnt--; if (iocb->iocb_cmpl) { cmd->ulpStatus = IOSTAT_LOCAL_REJECT; cmd->un.ulpWord[4] = IOERR_SLI_ABORTED; spin_unlock_irq(phba->host->host_lock); (iocb->iocb_cmpl) (phba, iocb, iocb); spin_lock_irq(phba->host->host_lock); } else { list_add_tail(&iocb->list, &phba->lpfc_iocb_list); } } INIT_LIST_HEAD(&pring->txcmplq); pring->txcmplq_cnt = 0; spin_unlock_irq(phba->host->host_lock); return errcnt; } /****************************************************************************** * lpfc_sli_send_reset * * Note: After returning from this function, the HBA cannot be accessed for * 1 ms. Since we do not wish to delay in interrupt context, it is the * responsibility of the caller to perform the mdelay(1) and flush via readl(). ******************************************************************************/ static int lpfc_sli_send_reset(struct lpfc_hba * phba, uint16_t skip_post) { MAILBOX_t *swpmb; volatile uint32_t word0; void __iomem *to_slim; unsigned long flags = 0; spin_lock_irqsave(phba->host->host_lock, flags); /* A board reset must use REAL SLIM. */ phba->sli.sli_flag &= ~LPFC_SLI2_ACTIVE; word0 = 0; swpmb = (MAILBOX_t *) & word0; swpmb->mbxCommand = MBX_RESTART; swpmb->mbxHc = 1; to_slim = phba->MBslimaddr; writel(*(uint32_t *) swpmb, to_slim); readl(to_slim); /* flush */ /* Only skip post after fc_ffinit is completed */ if (skip_post) { word0 = 1; /* This is really setting up word1 */ } else { word0 = 0; /* This is really setting up word1 */ } to_slim = phba->MBslimaddr + sizeof (uint32_t); writel(*(uint32_t *) swpmb, to_slim); readl(to_slim); /* flush */ /* Turn off parity checking and serr during the physical reset */ pci_read_config_word(phba->pcidev, PCI_COMMAND, &phba->pci_cfg_value); pci_write_config_word(phba->pcidev, PCI_COMMAND, (phba->pci_cfg_value & ~(PCI_COMMAND_PARITY | PCI_COMMAND_SERR))); writel(HC_INITFF, phba->HCregaddr); phba->hba_state = LPFC_INIT_START; spin_unlock_irqrestore(phba->host->host_lock, flags); return 0; } static int lpfc_sli_brdreset(struct lpfc_hba * phba, uint16_t skip_post) { struct lpfc_sli_ring *pring; int i; struct lpfc_dmabuf *mp, *next_mp; unsigned long flags = 0; lpfc_sli_send_reset(phba, skip_post); mdelay(1); spin_lock_irqsave(phba->host->host_lock, flags); /* Risk the write on flush case ie no delay after the readl */ readl(phba->HCregaddr); /* flush */ /* Now toggle INITFF bit set by lpfc_sli_send_reset */ writel(0, phba->HCregaddr); readl(phba->HCregaddr); /* flush */ /* Restore PCI cmd register */ pci_write_config_word(phba->pcidev, PCI_COMMAND, phba->pci_cfg_value); /* perform board reset */ phba->fc_eventTag = 0; phba->fc_myDID = 0; phba->fc_prevDID = Mask_DID; /* Reset HBA */ lpfc_printf_log(phba, KERN_INFO, LOG_SLI, "%d:0325 Reset HBA Data: x%x x%x x%x\n", phba->brd_no, phba->hba_state, phba->sli.sli_flag, skip_post); /* Initialize relevant SLI info */ for (i = 0; i < phba->sli.num_rings; i++) { pring = &phba->sli.ring[i]; pring->flag = 0; pring->rspidx = 0; pring->next_cmdidx = 0; pring->local_getidx = 0; pring->cmdidx = 0; pring->missbufcnt = 0; } spin_unlock_irqrestore(phba->host->host_lock, flags); if (skip_post) { mdelay(100); } else { mdelay(2000); } spin_lock_irqsave(phba->host->host_lock, flags); /* Cleanup preposted buffers on the ELS ring */ pring = &phba->sli.ring[LPFC_ELS_RING]; list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) { list_del(&mp->list); pring->postbufq_cnt--; lpfc_mbuf_free(phba, mp->virt, mp->phys); kfree(mp); } spin_unlock_irqrestore(phba->host->host_lock, flags); for (i = 0; i < phba->sli.num_rings; i++) lpfc_sli_abort_iocb_ring(phba, &phba->sli.ring[i]); return 0; } static int lpfc_sli_chipset_init(struct lpfc_hba *phba) { uint32_t status, i = 0; /* Read the HBA Host Status Register */ status = readl(phba->HSregaddr); /* Check status register to see what current state is */ i = 0; while ((status & (HS_FFRDY | HS_MBRDY)) != (HS_FFRDY | HS_MBRDY)) { /* Check every 100ms for 5 retries, then every 500ms for 5, then * every 2.5 sec for 5, then reset board and every 2.5 sec for * 4. */ if (i++ >= 20) { /* Adapter failed to init, timeout, status reg */ lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "%d:0436 Adapter failed to init, " "timeout, status reg x%x\n", phba->brd_no, status); phba->hba_state = LPFC_HBA_ERROR; return -ETIMEDOUT; } /* Check to see if any errors occurred during init */ if (status & HS_FFERM) { /* ERROR: During chipset initialization */ /* Adapter failed to init, chipset, status reg */ lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "%d:0437 Adapter failed to init, " "chipset, status reg x%x\n", phba->brd_no, status); phba->hba_state = LPFC_HBA_ERROR; return -EIO; } if (i <= 5) { msleep(10); } else if (i <= 10) { msleep(500); } else { msleep(2500); } if (i == 15) { lpfc_sli_brdreset(phba, 0); } /* Read the HBA Host Status Register */ status = readl(phba->HSregaddr); } /* Check to see if any errors occurred during init */ if (status & HS_FFERM) { /* ERROR: During chipset initialization */ /* Adapter failed to init, chipset, status reg */ lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "%d:0438 Adapter failed to init, chipset, " "status reg x%x\n", phba->brd_no, status); phba->hba_state = LPFC_HBA_ERROR; return -EIO; } /* Clear all interrupt enable conditions */ writel(0, phba->HCregaddr); readl(phba->HCregaddr); /* flush */ /* setup host attn register */ writel(0xffffffff, phba->HAregaddr); readl(phba->HAregaddr); /* flush */ return 0; } int lpfc_sli_hba_setup(struct lpfc_hba * phba) { LPFC_MBOXQ_t *pmb; uint32_t resetcount = 0, rc = 0, done = 0; pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!pmb) { phba->hba_state = LPFC_HBA_ERROR; return -ENOMEM; } while (resetcount < 2 && !done) { phba->hba_state = 0; lpfc_sli_brdreset(phba, 0); msleep(2500); rc = lpfc_sli_chipset_init(phba); if (rc) break; resetcount++; /* Call pre CONFIG_PORT mailbox command initialization. A value of 0 * means the call was successful. Any other nonzero value is a failure, * but if ERESTART is returned, the driver may reset the HBA and try * again. */ rc = lpfc_config_port_prep(phba); if (rc == -ERESTART) { phba->hba_state = 0; continue; } else if (rc) { break; } phba->hba_state = LPFC_INIT_MBX_CMDS; lpfc_config_port(phba, pmb); rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL); if (rc == MBX_SUCCESS) done = 1; else { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "%d:0442 Adapter failed to init, mbxCmd x%x " "CONFIG_PORT, mbxStatus x%x Data: x%x\n", phba->brd_no, pmb->mb.mbxCommand, pmb->mb.mbxStatus, 0); phba->sli.sli_flag &= ~LPFC_SLI2_ACTIVE; } } if (!done) goto lpfc_sli_hba_setup_error; rc = lpfc_sli_ring_map(phba, pmb); if (rc) goto lpfc_sli_hba_setup_error; phba->sli.sli_flag |= LPFC_PROCESS_LA; rc = lpfc_config_port_post(phba); if (rc) goto lpfc_sli_hba_setup_error; goto lpfc_sli_hba_setup_exit; lpfc_sli_hba_setup_error: phba->hba_state = LPFC_HBA_ERROR; lpfc_sli_hba_setup_exit: mempool_free(pmb, phba->mbox_mem_pool); return rc; } static void lpfc_mbox_abort(struct lpfc_hba * phba) { LPFC_MBOXQ_t *pmbox; MAILBOX_t *mb; if (phba->sli.mbox_active) { del_timer_sync(&phba->sli.mbox_tmo); phba->work_hba_events &= ~WORKER_MBOX_TMO; pmbox = phba->sli.mbox_active; mb = &pmbox->mb; phba->sli.mbox_active = NULL; if (pmbox->mbox_cmpl) { mb->mbxStatus = MBX_NOT_FINISHED; (pmbox->mbox_cmpl) (phba, pmbox); } phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; } /* Abort all the non active mailbox commands. */ spin_lock_irq(phba->host->host_lock); pmbox = lpfc_mbox_get(phba); while (pmbox) { mb = &pmbox->mb; if (pmbox->mbox_cmpl) { mb->mbxStatus = MBX_NOT_FINISHED; spin_unlock_irq(phba->host->host_lock); (pmbox->mbox_cmpl) (phba, pmbox); spin_lock_irq(phba->host->host_lock); } pmbox = lpfc_mbox_get(phba); } spin_unlock_irq(phba->host->host_lock); return; } /*! lpfc_mbox_timeout * * \pre * \post * \param hba Pointer to per struct lpfc_hba structure * \param l1 Pointer to the driver's mailbox queue. * \return * void * * \b Description: * * This routine handles mailbox timeout events at timer interrupt context. */ void lpfc_mbox_timeout(unsigned long ptr) { struct lpfc_hba *phba; unsigned long iflag; phba = (struct lpfc_hba *)ptr; spin_lock_irqsave(phba->host->host_lock, iflag); if (!(phba->work_hba_events & WORKER_MBOX_TMO)) { phba->work_hba_events |= WORKER_MBOX_TMO; if (phba->work_wait) wake_up(phba->work_wait); } spin_unlock_irqrestore(phba->host->host_lock, iflag); } void lpfc_mbox_timeout_handler(struct lpfc_hba *phba) { LPFC_MBOXQ_t *pmbox; MAILBOX_t *mb; spin_lock_irq(phba->host->host_lock); if (!(phba->work_hba_events & WORKER_MBOX_TMO)) { spin_unlock_irq(phba->host->host_lock); return; } phba->work_hba_events &= ~WORKER_MBOX_TMO; pmbox = phba->sli.mbox_active; mb = &pmbox->mb; /* Mbox cmd timeout */ lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, "%d:0310 Mailbox command x%x timeout Data: x%x x%x x%p\n", phba->brd_no, mb->mbxCommand, phba->hba_state, phba->sli.sli_flag, phba->sli.mbox_active); phba->sli.mbox_active = NULL; if (pmbox->mbox_cmpl) { mb->mbxStatus = MBX_NOT_FINISHED; spin_unlock_irq(phba->host->host_lock); (pmbox->mbox_cmpl) (phba, pmbox); spin_lock_irq(phba->host->host_lock); } phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; spin_unlock_irq(phba->host->host_lock); lpfc_mbox_abort(phba); return; } int lpfc_sli_issue_mbox(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmbox, uint32_t flag) { MAILBOX_t *mb; struct lpfc_sli *psli; uint32_t status, evtctr; uint32_t ha_copy; int i; unsigned long drvr_flag = 0; volatile uint32_t word0, ldata; void __iomem *to_slim; psli = &phba->sli; spin_lock_irqsave(phba->host->host_lock, drvr_flag); mb = &pmbox->mb; status = MBX_SUCCESS; if (psli->sli_flag & LPFC_SLI_MBOX_ACTIVE) { /* Polling for a mbox command when another one is already active * is not allowed in SLI. Also, the driver must have established * SLI2 mode to queue and process multiple mbox commands. */ if (flag & MBX_POLL) { spin_unlock_irqrestore(phba->host->host_lock, drvr_flag); /* Mbox command cannot issue */ LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag) return (MBX_NOT_FINISHED); } if (!(psli->sli_flag & LPFC_SLI2_ACTIVE)) { spin_unlock_irqrestore(phba->host->host_lock, drvr_flag); /* Mbox command cannot issue */ LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag) return (MBX_NOT_FINISHED); } /* Handle STOP IOCB processing flag. This is only meaningful * if we are not polling for mbox completion. */ if (flag & MBX_STOP_IOCB) { flag &= ~MBX_STOP_IOCB; /* Now flag each ring */ for (i = 0; i < psli->num_rings; i++) { /* If the ring is active, flag it */ if (psli->ring[i].cmdringaddr) { psli->ring[i].flag |= LPFC_STOP_IOCB_MBX; } } } /* Another mailbox command is still being processed, queue this * command to be processed later. */ lpfc_mbox_put(phba, pmbox); /* Mbox cmd issue - BUSY */ lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI, "%d:0308 Mbox cmd issue - BUSY Data: x%x x%x x%x x%x\n", phba->brd_no, mb->mbxCommand, phba->hba_state, psli->sli_flag, flag); psli->slistat.mbox_busy++; spin_unlock_irqrestore(phba->host->host_lock, drvr_flag); return (MBX_BUSY); } /* Handle STOP IOCB processing flag. This is only meaningful * if we are not polling for mbox completion. */ if (flag & MBX_STOP_IOCB) { flag &= ~MBX_STOP_IOCB; if (flag == MBX_NOWAIT) { /* Now flag each ring */ for (i = 0; i < psli->num_rings; i++) { /* If the ring is active, flag it */ if (psli->ring[i].cmdringaddr) { psli->ring[i].flag |= LPFC_STOP_IOCB_MBX; } } } } psli->sli_flag |= LPFC_SLI_MBOX_ACTIVE; /* If we are not polling, we MUST be in SLI2 mode */ if (flag != MBX_POLL) { if (!(psli->sli_flag & LPFC_SLI2_ACTIVE)) { psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; spin_unlock_irqrestore(phba->host->host_lock, drvr_flag); /* Mbox command cannot issue */ LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag); return (MBX_NOT_FINISHED); } /* timeout active mbox command */ mod_timer(&psli->mbox_tmo, jiffies + HZ * LPFC_MBOX_TMO); } /* Mailbox cmd issue */ lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI, "%d:0309 Mailbox cmd x%x issue Data: x%x x%x x%x\n", phba->brd_no, mb->mbxCommand, phba->hba_state, psli->sli_flag, flag); psli->slistat.mbox_cmd++; evtctr = psli->slistat.mbox_event; /* next set own bit for the adapter and copy over command word */ mb->mbxOwner = OWN_CHIP; if (psli->sli_flag & LPFC_SLI2_ACTIVE) { /* First copy command data to host SLIM area */ lpfc_sli_pcimem_bcopy(mb, &phba->slim2p->mbx, MAILBOX_CMD_SIZE); } else { if (mb->mbxCommand == MBX_CONFIG_PORT) { /* copy command data into host mbox for cmpl */ lpfc_sli_pcimem_bcopy(mb, &phba->slim2p->mbx, MAILBOX_CMD_SIZE); } /* First copy mbox command data to HBA SLIM, skip past first word */ to_slim = phba->MBslimaddr + sizeof (uint32_t); lpfc_memcpy_to_slim(to_slim, &mb->un.varWords[0], MAILBOX_CMD_SIZE - sizeof (uint32_t)); /* Next copy over first word, with mbxOwner set */ ldata = *((volatile uint32_t *)mb); to_slim = phba->MBslimaddr; writel(ldata, to_slim); readl(to_slim); /* flush */ if (mb->mbxCommand == MBX_CONFIG_PORT) { /* switch over to host mailbox */ psli->sli_flag |= LPFC_SLI2_ACTIVE; } } wmb(); /* interrupt board to doit right away */ writel(CA_MBATT, phba->CAregaddr); readl(phba->CAregaddr); /* flush */ switch (flag) { case MBX_NOWAIT: /* Don't wait for it to finish, just return */ psli->mbox_active = pmbox; break; case MBX_POLL: i = 0; psli->mbox_active = NULL; if (psli->sli_flag & LPFC_SLI2_ACTIVE) { /* First read mbox status word */ word0 = *((volatile uint32_t *)&phba->slim2p->mbx); word0 = le32_to_cpu(word0); } else { /* First read mbox status word */ word0 = readl(phba->MBslimaddr); } /* Read the HBA Host Attention Register */ ha_copy = readl(phba->HAregaddr); /* Wait for command to complete */ while (((word0 & OWN_CHIP) == OWN_CHIP) || !(ha_copy & HA_MBATT)) { if (i++ >= 100) { psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; spin_unlock_irqrestore(phba->host->host_lock, drvr_flag); return (MBX_NOT_FINISHED); } /* Check if we took a mbox interrupt while we were polling */ if (((word0 & OWN_CHIP) != OWN_CHIP) && (evtctr != psli->slistat.mbox_event)) break; spin_unlock_irqrestore(phba->host->host_lock, drvr_flag); /* Can be in interrupt context, do not sleep */ /* (or might be called with interrupts disabled) */ mdelay(i); spin_lock_irqsave(phba->host->host_lock, drvr_flag); if (psli->sli_flag & LPFC_SLI2_ACTIVE) { /* First copy command data */ word0 = *((volatile uint32_t *) &phba->slim2p->mbx); word0 = le32_to_cpu(word0); if (mb->mbxCommand == MBX_CONFIG_PORT) { MAILBOX_t *slimmb; volatile uint32_t slimword0; /* Check real SLIM for any errors */ slimword0 = readl(phba->MBslimaddr); slimmb = (MAILBOX_t *) & slimword0; if (((slimword0 & OWN_CHIP) != OWN_CHIP) && slimmb->mbxStatus) { psli->sli_flag &= ~LPFC_SLI2_ACTIVE; word0 = slimword0; } } } else { /* First copy command data */ word0 = readl(phba->MBslimaddr); } /* Read the HBA Host Attention Register */ ha_copy = readl(phba->HAregaddr); } if (psli->sli_flag & LPFC_SLI2_ACTIVE) { /* copy results back to user */ lpfc_sli_pcimem_bcopy(&phba->slim2p->mbx, mb, MAILBOX_CMD_SIZE); } else { /* First copy command data */ lpfc_memcpy_from_slim(mb, phba->MBslimaddr, MAILBOX_CMD_SIZE); if ((mb->mbxCommand == MBX_DUMP_MEMORY) && pmbox->context2) { lpfc_memcpy_from_slim((void *)pmbox->context2, phba->MBslimaddr + DMP_RSP_OFFSET, mb->un.varDmp.word_cnt); } } writel(HA_MBATT, phba->HAregaddr); readl(phba->HAregaddr); /* flush */ psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; status = mb->mbxStatus; } spin_unlock_irqrestore(phba->host->host_lock, drvr_flag); return (status); } static int lpfc_sli_ringtx_put(struct lpfc_hba * phba, struct lpfc_sli_ring * pring, struct lpfc_iocbq * piocb) { /* Insert the caller's iocb in the txq tail for later processing. */ list_add_tail(&piocb->list, &pring->txq); pring->txq_cnt++; return (0); } static struct lpfc_iocbq * lpfc_sli_next_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, struct lpfc_iocbq ** piocb) { struct lpfc_iocbq * nextiocb; nextiocb = lpfc_sli_ringtx_get(phba, pring); if (!nextiocb) { nextiocb = *piocb; *piocb = NULL; } return nextiocb; } int lpfc_sli_issue_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, struct lpfc_iocbq *piocb, uint32_t flag) { struct lpfc_iocbq *nextiocb; IOCB_t *iocb; /* * We should never get an IOCB if we are in a < LINK_DOWN state */ if (unlikely(phba->hba_state < LPFC_LINK_DOWN)) return IOCB_ERROR; /* * Check to see if we are blocking IOCB processing because of a * outstanding mbox command. */ if (unlikely(pring->flag & LPFC_STOP_IOCB_MBX)) goto iocb_busy; if (unlikely(phba->hba_state == LPFC_LINK_DOWN)) { /* * Only CREATE_XRI, CLOSE_XRI, ABORT_XRI, and QUE_RING_BUF * can be issued if the link is not up. */ switch (piocb->iocb.ulpCommand) { case CMD_QUE_RING_BUF_CN: case CMD_QUE_RING_BUF64_CN: case CMD_CLOSE_XRI_CN: case CMD_ABORT_XRI_CN: /* * For IOCBs, like QUE_RING_BUF, that have no rsp ring * completion, iocb_cmpl MUST be 0. */ if (piocb->iocb_cmpl) piocb->iocb_cmpl = NULL; /*FALLTHROUGH*/ case CMD_CREATE_XRI_CR: break; default: goto iocb_busy; } /* * For FCP commands, we must be in a state where we can process link * attention events. */ } else if (unlikely(pring->ringno == phba->sli.fcp_ring && !(phba->sli.sli_flag & LPFC_PROCESS_LA))) goto iocb_busy; /* * Check to see if this is a high priority command. * If so bypass tx queue processing. */ if (unlikely((flag & SLI_IOCB_HIGH_PRIORITY) && (iocb = lpfc_sli_next_iocb_slot(phba, pring)))) { lpfc_sli_submit_iocb(phba, pring, iocb, piocb); piocb = NULL; } while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) && (nextiocb = lpfc_sli_next_iocb(phba, pring, &piocb))) lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb); if (iocb) lpfc_sli_update_ring(phba, pring); else lpfc_sli_update_full_ring(phba, pring); if (!piocb) return IOCB_SUCCESS; goto out_busy; iocb_busy: pring->stats.iocb_cmd_delay++; out_busy: if (!(flag & SLI_IOCB_RET_IOCB)) { lpfc_sli_ringtx_put(phba, pring, piocb); return IOCB_SUCCESS; } return IOCB_BUSY; } int lpfc_sli_setup(struct lpfc_hba *phba) { int i, totiocb = 0; struct lpfc_sli *psli = &phba->sli; struct lpfc_sli_ring *pring; psli->num_rings = MAX_CONFIGURED_RINGS; psli->sli_flag = 0; psli->fcp_ring = LPFC_FCP_RING; psli->next_ring = LPFC_FCP_NEXT_RING; psli->ip_ring = LPFC_IP_RING; for (i = 0; i < psli->num_rings; i++) { pring = &psli->ring[i]; switch (i) { case LPFC_FCP_RING: /* ring 0 - FCP */ /* numCiocb and numRiocb are used in config_port */ pring->numCiocb = SLI2_IOCB_CMD_R0_ENTRIES; pring->numRiocb = SLI2_IOCB_RSP_R0_ENTRIES; pring->numCiocb += SLI2_IOCB_CMD_R1XTRA_ENTRIES; pring->numRiocb += SLI2_IOCB_RSP_R1XTRA_ENTRIES; pring->numCiocb += SLI2_IOCB_CMD_R3XTRA_ENTRIES; pring->numRiocb += SLI2_IOCB_RSP_R3XTRA_ENTRIES; pring->iotag_ctr = 0; pring->iotag_max = (phba->cfg_hba_queue_depth * 2); pring->fast_iotag = pring->iotag_max; pring->num_mask = 0; break; case LPFC_IP_RING: /* ring 1 - IP */ /* numCiocb and numRiocb are used in config_port */ pring->numCiocb = SLI2_IOCB_CMD_R1_ENTRIES; pring->numRiocb = SLI2_IOCB_RSP_R1_ENTRIES; pring->num_mask = 0; break; case LPFC_ELS_RING: /* ring 2 - ELS / CT */ /* numCiocb and numRiocb are used in config_port */ pring->numCiocb = SLI2_IOCB_CMD_R2_ENTRIES; pring->numRiocb = SLI2_IOCB_RSP_R2_ENTRIES; pring->fast_iotag = 0; pring->iotag_ctr = 0; pring->iotag_max = 4096; pring->num_mask = 4; pring->prt[0].profile = 0; /* Mask 0 */ pring->prt[0].rctl = FC_ELS_REQ; pring->prt[0].type = FC_ELS_DATA; pring->prt[0].lpfc_sli_rcv_unsol_event = lpfc_els_unsol_event; pring->prt[1].profile = 0; /* Mask 1 */ pring->prt[1].rctl = FC_ELS_RSP; pring->prt[1].type = FC_ELS_DATA; pring->prt[1].lpfc_sli_rcv_unsol_event = lpfc_els_unsol_event; pring->prt[2].profile = 0; /* Mask 2 */ /* NameServer Inquiry */ pring->prt[2].rctl = FC_UNSOL_CTL; /* NameServer */ pring->prt[2].type = FC_COMMON_TRANSPORT_ULP; pring->prt[2].lpfc_sli_rcv_unsol_event = lpfc_ct_unsol_event; pring->prt[3].profile = 0; /* Mask 3 */ /* NameServer response */ pring->prt[3].rctl = FC_SOL_CTL; /* NameServer */ pring->prt[3].type = FC_COMMON_TRANSPORT_ULP; pring->prt[3].lpfc_sli_rcv_unsol_event = lpfc_ct_unsol_event; break; } totiocb += (pring->numCiocb + pring->numRiocb); } if (totiocb > MAX_SLI2_IOCB) { /* Too many cmd / rsp ring entries in SLI2 SLIM */ lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "%d:0462 Too many cmd / rsp ring entries in " "SLI2 SLIM Data: x%x x%x\n", phba->brd_no, totiocb, MAX_SLI2_IOCB); } return 0; } int lpfc_sli_queue_setup(struct lpfc_hba * phba) { struct lpfc_sli *psli; struct lpfc_sli_ring *pring; int i, cnt; psli = &phba->sli; spin_lock_irq(phba->host->host_lock); INIT_LIST_HEAD(&psli->mboxq); /* Initialize list headers for txq and txcmplq as double linked lists */ for (i = 0; i < psli->num_rings; i++) { pring = &psli->ring[i]; pring->ringno = i; pring->next_cmdidx = 0; pring->local_getidx = 0; pring->cmdidx = 0; INIT_LIST_HEAD(&pring->txq); INIT_LIST_HEAD(&pring->txcmplq); INIT_LIST_HEAD(&pring->iocb_continueq); INIT_LIST_HEAD(&pring->postbufq); cnt = pring->fast_iotag; spin_unlock_irq(phba->host->host_lock); if (cnt) { pring->fast_lookup = kmalloc(cnt * sizeof (struct lpfc_iocbq *), GFP_KERNEL); if (pring->fast_lookup == 0) { return (0); } memset((char *)pring->fast_lookup, 0, cnt * sizeof (struct lpfc_iocbq *)); } spin_lock_irq(phba->host->host_lock); } spin_unlock_irq(phba->host->host_lock); return (1); } int lpfc_sli_hba_down(struct lpfc_hba * phba) { struct lpfc_sli *psli; struct lpfc_sli_ring *pring; LPFC_MBOXQ_t *pmb; struct lpfc_iocbq *iocb, *next_iocb; IOCB_t *icmd = NULL; int i; unsigned long flags = 0; psli = &phba->sli; lpfc_hba_down_prep(phba); spin_lock_irqsave(phba->host->host_lock, flags); for (i = 0; i < psli->num_rings; i++) { pring = &psli->ring[i]; pring->flag |= LPFC_DEFERRED_RING_EVENT; /* * Error everything on the txq since these iocbs have not been * given to the FW yet. */ pring->txq_cnt = 0; list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) { list_del_init(&iocb->list); if (iocb->iocb_cmpl) { icmd = &iocb->iocb; icmd->ulpStatus = IOSTAT_LOCAL_REJECT; icmd->un.ulpWord[4] = IOERR_SLI_DOWN; spin_unlock_irqrestore(phba->host->host_lock, flags); (iocb->iocb_cmpl) (phba, iocb, iocb); spin_lock_irqsave(phba->host->host_lock, flags); } else { list_add_tail(&iocb->list, &phba->lpfc_iocb_list); } } INIT_LIST_HEAD(&(pring->txq)); if (pring->fast_lookup) { kfree(pring->fast_lookup); pring->fast_lookup = NULL; } } spin_unlock_irqrestore(phba->host->host_lock, flags); /* Return any active mbox cmds */ del_timer_sync(&psli->mbox_tmo); spin_lock_irqsave(phba->host->host_lock, flags); phba->work_hba_events &= ~WORKER_MBOX_TMO; if (psli->mbox_active) { pmb = psli->mbox_active; pmb->mb.mbxStatus = MBX_NOT_FINISHED; if (pmb->mbox_cmpl) { spin_unlock_irqrestore(phba->host->host_lock, flags); pmb->mbox_cmpl(phba,pmb); spin_lock_irqsave(phba->host->host_lock, flags); } } psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; psli->mbox_active = NULL; /* Return any pending mbox cmds */ while ((pmb = lpfc_mbox_get(phba)) != NULL) { pmb->mb.mbxStatus = MBX_NOT_FINISHED; if (pmb->mbox_cmpl) { spin_unlock_irqrestore(phba->host->host_lock, flags); pmb->mbox_cmpl(phba,pmb); spin_lock_irqsave(phba->host->host_lock, flags); } } INIT_LIST_HEAD(&psli->mboxq); spin_unlock_irqrestore(phba->host->host_lock, flags); /* * Provided the hba is not in an error state, reset it. It is not * capable of IO anymore. */ if (phba->hba_state != LPFC_HBA_ERROR) { phba->hba_state = LPFC_INIT_START; lpfc_sli_brdreset(phba, 1); } return 1; } void lpfc_sli_pcimem_bcopy(void *srcp, void *destp, uint32_t cnt) { uint32_t *src = srcp; uint32_t *dest = destp; uint32_t ldata; int i; for (i = 0; i < (int)cnt; i += sizeof (uint32_t)) { ldata = *src; ldata = le32_to_cpu(ldata); *dest = ldata; src++; dest++; } } int lpfc_sli_ringpostbuf_put(struct lpfc_hba * phba, struct lpfc_sli_ring * pring, struct lpfc_dmabuf * mp) { /* Stick struct lpfc_dmabuf at end of postbufq so driver can look it up later */ list_add_tail(&mp->list, &pring->postbufq); pring->postbufq_cnt++; return 0; } struct lpfc_dmabuf * lpfc_sli_ringpostbuf_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, dma_addr_t phys) { struct lpfc_dmabuf *mp, *next_mp; struct list_head *slp = &pring->postbufq; /* Search postbufq, from the begining, looking for a match on phys */ list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) { if (mp->phys == phys) { list_del_init(&mp->list); pring->postbufq_cnt--; return mp; } } lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "%d:0410 Cannot find virtual addr for mapped buf on " "ring %d Data x%llx x%p x%p x%x\n", phba->brd_no, pring->ringno, (unsigned long long)phys, slp->next, slp->prev, pring->postbufq_cnt); return NULL; } static void lpfc_sli_abort_elsreq_cmpl(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb, struct lpfc_iocbq * rspiocb) { struct lpfc_dmabuf *buf_ptr, *buf_ptr1; /* Free the resources associated with the ELS_REQUEST64 IOCB the driver * just aborted. * In this case, context2 = cmd, context2->next = rsp, context3 = bpl */ if (cmdiocb->context2) { buf_ptr1 = (struct lpfc_dmabuf *) cmdiocb->context2; /* Free the response IOCB before completing the abort command. */ buf_ptr = NULL; list_remove_head((&buf_ptr1->list), buf_ptr, struct lpfc_dmabuf, list); if (buf_ptr) { lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys); kfree(buf_ptr); } lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys); kfree(buf_ptr1); } if (cmdiocb->context3) { buf_ptr = (struct lpfc_dmabuf *) cmdiocb->context3; lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys); kfree(buf_ptr); } list_add_tail(&cmdiocb->list, &phba->lpfc_iocb_list); return; } int lpfc_sli_issue_abort_iotag32(struct lpfc_hba * phba, struct lpfc_sli_ring * pring, struct lpfc_iocbq * cmdiocb) { struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list; struct lpfc_iocbq *abtsiocbp = NULL; IOCB_t *icmd = NULL; IOCB_t *iabt = NULL; /* issue ABTS for this IOCB based on iotag */ list_remove_head(lpfc_iocb_list, abtsiocbp, struct lpfc_iocbq, list); if (abtsiocbp == NULL) return 0; memset(abtsiocbp, 0, sizeof (struct lpfc_iocbq)); iabt = &abtsiocbp->iocb; icmd = &cmdiocb->iocb; switch (icmd->ulpCommand) { case CMD_ELS_REQUEST64_CR: /* Even though we abort the ELS command, the firmware may access * the BPL or other resources before it processes our * ABORT_MXRI64. Thus we must delay reusing the cmdiocb * resources till the actual abort request completes. */ abtsiocbp->context1 = (void *)((unsigned long)icmd->ulpCommand); abtsiocbp->context2 = cmdiocb->context2; abtsiocbp->context3 = cmdiocb->context3; cmdiocb->context2 = NULL; cmdiocb->context3 = NULL; abtsiocbp->iocb_cmpl = lpfc_sli_abort_elsreq_cmpl; break; default: list_add_tail(&abtsiocbp->list, lpfc_iocb_list); return 0; } iabt->un.amxri.abortType = ABORT_TYPE_ABTS; iabt->un.amxri.iotag32 = icmd->un.elsreq64.bdl.ulpIoTag32; iabt->ulpLe = 1; iabt->ulpClass = CLASS3; iabt->ulpCommand = CMD_ABORT_MXRI64_CN; if (lpfc_sli_issue_iocb(phba, pring, abtsiocbp, 0) == IOCB_ERROR) { list_add_tail(&abtsiocbp->list, lpfc_iocb_list); return 0; } return 1; } static int lpfc_sli_validate_iocb_cmd(struct lpfc_scsi_buf *lpfc_cmd, uint16_t tgt_id, uint64_t lun_id, struct lpfc_iocbq *iocb, uint32_t ctx, lpfc_ctx_cmd ctx_cmd) { int rc = 1; if (lpfc_cmd == NULL) return rc; switch (ctx_cmd) { case LPFC_CTX_LUN: if ((lpfc_cmd->pCmd->device->id == tgt_id) && (lpfc_cmd->pCmd->device->lun == lun_id)) rc = 0; break; case LPFC_CTX_TGT: if (lpfc_cmd->pCmd->device->id == tgt_id) rc = 0; break; case LPFC_CTX_CTX: if (iocb->iocb.ulpContext == ctx) rc = 0; case LPFC_CTX_HOST: rc = 0; break; default: printk(KERN_ERR "%s: Unknown context cmd type, value %d\n", __FUNCTION__, ctx_cmd); break; } return rc; } int lpfc_sli_sum_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, uint16_t tgt_id, uint64_t lun_id, lpfc_ctx_cmd ctx_cmd) { struct lpfc_iocbq *iocb, *next_iocb; IOCB_t *cmd = NULL; struct lpfc_scsi_buf *lpfc_cmd; int sum = 0, ret_val = 0; /* Next check the txcmplq */ list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) { cmd = &iocb->iocb; /* Must be a FCP command */ if ((cmd->ulpCommand != CMD_FCP_ICMND64_CR) && (cmd->ulpCommand != CMD_FCP_IWRITE64_CR) && (cmd->ulpCommand != CMD_FCP_IREAD64_CR)) { continue; } /* context1 MUST be a struct lpfc_scsi_buf */ lpfc_cmd = (struct lpfc_scsi_buf *) (iocb->context1); ret_val = lpfc_sli_validate_iocb_cmd(lpfc_cmd, tgt_id, lun_id, NULL, 0, ctx_cmd); if (ret_val != 0) continue; sum++; } return sum; } int lpfc_sli_abort_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, uint16_t tgt_id, uint64_t lun_id, uint32_t ctx, lpfc_ctx_cmd abort_cmd) { struct lpfc_iocbq *iocb, *next_iocb; struct lpfc_iocbq *abtsiocb = NULL; struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list; IOCB_t *cmd = NULL; struct lpfc_scsi_buf *lpfc_cmd; int errcnt = 0, ret_val = 0; list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) { cmd = &iocb->iocb; /* Must be a FCP command */ if ((cmd->ulpCommand != CMD_FCP_ICMND64_CR) && (cmd->ulpCommand != CMD_FCP_IWRITE64_CR) && (cmd->ulpCommand != CMD_FCP_IREAD64_CR)) { continue; } /* context1 MUST be a struct lpfc_scsi_buf */ lpfc_cmd = (struct lpfc_scsi_buf *) (iocb->context1); ret_val = lpfc_sli_validate_iocb_cmd(lpfc_cmd, tgt_id, lun_id, iocb, ctx, abort_cmd); if (ret_val != 0) continue; /* issue ABTS for this IOCB based on iotag */ list_remove_head(lpfc_iocb_list, abtsiocb, struct lpfc_iocbq, list); if (abtsiocb == NULL) { errcnt++; continue; } memset(abtsiocb, 0, sizeof (struct lpfc_iocbq)); abtsiocb->iocb.un.acxri.abortType = ABORT_TYPE_ABTS; abtsiocb->iocb.un.acxri.abortContextTag = cmd->ulpContext; abtsiocb->iocb.un.acxri.abortIoTag = cmd->ulpIoTag; abtsiocb->iocb.ulpLe = 1; abtsiocb->iocb.ulpClass = cmd->ulpClass; if (phba->hba_state >= LPFC_LINK_UP) abtsiocb->iocb.ulpCommand = CMD_ABORT_XRI_CN; else abtsiocb->iocb.ulpCommand = CMD_CLOSE_XRI_CN; ret_val = lpfc_sli_issue_iocb(phba, pring, abtsiocb, 0); if (ret_val == IOCB_ERROR) { list_add_tail(&abtsiocb->list, lpfc_iocb_list); errcnt++; continue; } } return errcnt; } void lpfc_sli_wake_iocb_high_priority(struct lpfc_hba * phba, struct lpfc_iocbq * queue1, struct lpfc_iocbq * queue2) { if (queue1->context2 && queue2) memcpy(queue1->context2, queue2, sizeof (struct lpfc_iocbq)); /* The waiter is looking for LPFC_IO_HIPRI bit to be set as a signal to wake up */ queue1->iocb_flag |= LPFC_IO_HIPRI; return; } int lpfc_sli_issue_iocb_wait_high_priority(struct lpfc_hba * phba, struct lpfc_sli_ring * pring, struct lpfc_iocbq * piocb, uint32_t flag, struct lpfc_iocbq * prspiocbq, uint32_t timeout) { int j, delay_time, retval = IOCB_ERROR; /* The caller must left context1 empty. */ if (piocb->context_un.hipri_wait_queue != 0) { return IOCB_ERROR; } /* * If the caller has provided a response iocbq buffer, context2 must * be NULL or its an error. */ if (prspiocbq && piocb->context2) { return IOCB_ERROR; } piocb->context2 = prspiocbq; /* Setup callback routine and issue the command. */ piocb->iocb_cmpl = lpfc_sli_wake_iocb_high_priority; retval = lpfc_sli_issue_iocb(phba, pring, piocb, flag | SLI_IOCB_HIGH_PRIORITY); if (retval != IOCB_SUCCESS) { piocb->context2 = NULL; return IOCB_ERROR; } /* * This high-priority iocb was sent out-of-band. Poll for its * completion rather than wait for a signal. Note that the host_lock * is held by the midlayer and must be released here to allow the * interrupt handlers to complete the IO and signal this routine via * the iocb_flag. * Also, the delay_time is computed to be one second longer than * the scsi command timeout to give the FW time to abort on * timeout rather than the driver just giving up. Typically, * the midlayer does not specify a time for this command so the * driver is free to enforce its own timeout. */ delay_time = ((timeout + 1) * 1000) >> 6; retval = IOCB_ERROR; spin_unlock_irq(phba->host->host_lock); for (j = 0; j < 64; j++) { msleep(delay_time); if (piocb->iocb_flag & LPFC_IO_HIPRI) { piocb->iocb_flag &= ~LPFC_IO_HIPRI; retval = IOCB_SUCCESS; break; } } spin_lock_irq(phba->host->host_lock); piocb->context2 = NULL; return retval; } int lpfc_sli_issue_mbox_wait(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq, uint32_t timeout) { DECLARE_WAIT_QUEUE_HEAD(done_q); DECLARE_WAITQUEUE(wq_entry, current); uint32_t timeleft = 0; int retval; /* The caller must leave context1 empty. */ if (pmboxq->context1 != 0) { return (MBX_NOT_FINISHED); } /* setup wake call as IOCB callback */ pmboxq->mbox_cmpl = lpfc_sli_wake_mbox_wait; /* setup context field to pass wait_queue pointer to wake function */ pmboxq->context1 = &done_q; /* start to sleep before we wait, to avoid races */ set_current_state(TASK_INTERRUPTIBLE); add_wait_queue(&done_q, &wq_entry); /* now issue the command */ retval = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT); if (retval == MBX_BUSY || retval == MBX_SUCCESS) { timeleft = schedule_timeout(timeout * HZ); pmboxq->context1 = NULL; /* if schedule_timeout returns 0, we timed out and were not woken up */ if (timeleft == 0) { retval = MBX_TIMEOUT; } else { retval = MBX_SUCCESS; } } set_current_state(TASK_RUNNING); remove_wait_queue(&done_q, &wq_entry); return retval; } irqreturn_t lpfc_intr_handler(int irq, void *dev_id, struct pt_regs * regs) { struct lpfc_hba *phba; uint32_t ha_copy; uint32_t work_ha_copy; unsigned long status; int i; uint32_t control; /* * Get the driver's phba structure from the dev_id and * assume the HBA is not interrupting. */ phba = (struct lpfc_hba *) dev_id; if (unlikely(!phba)) return IRQ_NONE; phba->sli.slistat.sli_intr++; /* * Call the HBA to see if it is interrupting. If not, don't claim * the interrupt */ /* Ignore all interrupts during initialization. */ if (unlikely(phba->hba_state < LPFC_LINK_DOWN)) return IRQ_NONE; /* * Read host attention register to determine interrupt source * Clear Attention Sources, except Error Attention (to * preserve status) and Link Attention */ spin_lock(phba->host->host_lock); ha_copy = readl(phba->HAregaddr); writel((ha_copy & ~(HA_LATT | HA_ERATT)), phba->HAregaddr); readl(phba->HAregaddr); /* flush */ spin_unlock(phba->host->host_lock); if (unlikely(!ha_copy)) return IRQ_NONE; work_ha_copy = ha_copy & phba->work_ha_mask; if (unlikely(work_ha_copy)) { if (work_ha_copy & HA_LATT) { if (phba->sli.sli_flag & LPFC_PROCESS_LA) { /* * Turn off Link Attention interrupts * until CLEAR_LA done */ spin_lock(phba->host->host_lock); phba->sli.sli_flag &= ~LPFC_PROCESS_LA; control = readl(phba->HCregaddr); control &= ~HC_LAINT_ENA; writel(control, phba->HCregaddr); readl(phba->HCregaddr); /* flush */ spin_unlock(phba->host->host_lock); } else work_ha_copy &= ~HA_LATT; } if (work_ha_copy & ~(HA_ERATT|HA_MBATT|HA_LATT)) { for (i = 0; i < phba->sli.num_rings; i++) { if (work_ha_copy & (HA_RXATT << (4*i))) { /* * Turn off Slow Rings interrupts */ spin_lock(phba->host->host_lock); control = readl(phba->HCregaddr); control &= ~(HC_R0INT_ENA << i); writel(control, phba->HCregaddr); readl(phba->HCregaddr); /* flush */ spin_unlock(phba->host->host_lock); } } } if (work_ha_copy & HA_ERATT) { phba->hba_state = LPFC_HBA_ERROR; /* * There was a link/board error. Read the * status register to retrieve the error event * and process it. */ phba->sli.slistat.err_attn_event++; /* Save status info */ phba->work_hs = readl(phba->HSregaddr); phba->work_status[0] = readl(phba->MBslimaddr + 0xa8); phba->work_status[1] = readl(phba->MBslimaddr + 0xac); /* Clear Chip error bit */ writel(HA_ERATT, phba->HAregaddr); readl(phba->HAregaddr); /* flush */ /* * Reseting the HBA is the only reliable way * to shutdown interrupt when there is a * ERROR. */ lpfc_sli_send_reset(phba, phba->hba_state); } spin_lock(phba->host->host_lock); phba->work_ha |= work_ha_copy; if (phba->work_wait) wake_up(phba->work_wait); spin_unlock(phba->host->host_lock); } ha_copy &= ~(phba->work_ha_mask); /* * Process all events on FCP ring. Take the optimized path for * FCP IO. Any other IO is slow path and is handled by * the worker thread. */ status = (ha_copy & (HA_RXMASK << (4*LPFC_FCP_RING))); status >>= (4*LPFC_FCP_RING); if (status & HA_RXATT) lpfc_sli_handle_fast_ring_event(phba, &phba->sli.ring[LPFC_FCP_RING], status); return IRQ_HANDLED; } /* lpfc_intr_handler */