/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2006 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ #pragma ident "%Z%%M% %I% %E% SMI" /* * PX Fault Management Architecture */ #include #include #include #include #include #include #include "px_obj.h" typedef struct px_fabric_cfgspace { /* Error information */ msgcode_t msg_code; pcie_req_id_t rid; /* Config space header and device type */ uint8_t hdr_type; uint16_t dev_type; /* Register pointers */ uint16_t cap_off; uint16_t aer_off; /* PCI register values */ uint32_t sts_reg; uint32_t sts_sreg; /* PCIE register values */ uint32_t dev_sts_reg; uint32_t aer_ce_reg; uint32_t aer_ue_reg; uint32_t aer_sev_reg; uint32_t aer_ue_sreg; uint32_t aer_sev_sreg; /* PCIE Header Log Registers */ uint32_t aer_h1; uint32_t aer_h2; uint32_t aer_h3; uint32_t aer_h4; uint32_t aer_sh1; uint32_t aer_sh2; uint32_t aer_sh3; uint32_t aer_sh4; } px_fabric_cfgspace_t; static uint16_t px_fabric_get_aer(px_t *px_p, pcie_req_id_t rid); static uint16_t px_fabric_get_pciecap(px_t *px_p, pcie_req_id_t rid); static int px_fabric_handle_psts(px_fabric_cfgspace_t *cs); static int px_fabric_handle_ssts(px_fabric_cfgspace_t *cs); static int px_fabric_handle_paer(px_t *px_p, px_fabric_cfgspace_t *cs); static int px_fabric_handle_saer(px_t *px_p, px_fabric_cfgspace_t *cs); static int px_fabric_handle(px_t *px_p, px_fabric_cfgspace_t *cs); static void px_fabric_fill_cs(px_t *px_p, px_fabric_cfgspace_t *cs); static uint_t px_fabric_check(px_t *px_p, msgcode_t msg_code, pcie_req_id_t rid, ddi_fm_error_t *derr); /* * Initialize px FMA support */ int px_fm_attach(px_t *px_p) { px_p->px_fm_cap = DDI_FM_EREPORT_CAPABLE | DDI_FM_ERRCB_CAPABLE | DDI_FM_ACCCHK_CAPABLE | DDI_FM_DMACHK_CAPABLE; /* * Initialize pci_target_queue for FMA handling of * pci errors. */ pci_targetq_init(); /* * check parents' capability */ ddi_fm_init(px_p->px_dip, &px_p->px_fm_cap, &px_p->px_fm_ibc); /* * parents need to be ereport and error handling capable */ ASSERT(px_p->px_fm_cap && (DDI_FM_ERRCB_CAPABLE | DDI_FM_EREPORT_CAPABLE)); /* * Initialize lock to synchronize fabric error handling */ mutex_init(&px_p->px_fm_mutex, NULL, MUTEX_DRIVER, (void *)px_p->px_fm_ibc); /* * register error callback in parent */ ddi_fm_handler_register(px_p->px_dip, px_fm_callback, px_p); return (DDI_SUCCESS); } /* * Deregister FMA */ void px_fm_detach(px_t *px_p) { ddi_fm_handler_unregister(px_p->px_dip); mutex_destroy(&px_p->px_fm_mutex); ddi_fm_fini(px_p->px_dip); } /* * Function used to setup access functions depending on level of desired * protection. */ void px_fm_acc_setup(ddi_map_req_t *mp, dev_info_t *rdip) { uchar_t fflag; ddi_acc_hdl_t *hp; ddi_acc_impl_t *ap; hp = mp->map_handlep; ap = (ddi_acc_impl_t *)hp->ah_platform_private; fflag = ap->ahi_common.ah_acc.devacc_attr_access; if (mp->map_op == DDI_MO_MAP_LOCKED) { ndi_fmc_insert(rdip, ACC_HANDLE, (void *)hp, NULL); switch (fflag) { case DDI_FLAGERR_ACC: ap->ahi_get8 = i_ddi_prot_get8; ap->ahi_get16 = i_ddi_prot_get16; ap->ahi_get32 = i_ddi_prot_get32; ap->ahi_get64 = i_ddi_prot_get64; ap->ahi_put8 = i_ddi_prot_put8; ap->ahi_put16 = i_ddi_prot_put16; ap->ahi_put32 = i_ddi_prot_put32; ap->ahi_put64 = i_ddi_prot_put64; ap->ahi_rep_get8 = i_ddi_prot_rep_get8; ap->ahi_rep_get16 = i_ddi_prot_rep_get16; ap->ahi_rep_get32 = i_ddi_prot_rep_get32; ap->ahi_rep_get64 = i_ddi_prot_rep_get64; ap->ahi_rep_put8 = i_ddi_prot_rep_put8; ap->ahi_rep_put16 = i_ddi_prot_rep_put16; ap->ahi_rep_put32 = i_ddi_prot_rep_put32; ap->ahi_rep_put64 = i_ddi_prot_rep_put64; break; case DDI_CAUTIOUS_ACC : ap->ahi_get8 = i_ddi_caut_get8; ap->ahi_get16 = i_ddi_caut_get16; ap->ahi_get32 = i_ddi_caut_get32; ap->ahi_get64 = i_ddi_caut_get64; ap->ahi_put8 = i_ddi_caut_put8; ap->ahi_put16 = i_ddi_caut_put16; ap->ahi_put32 = i_ddi_caut_put32; ap->ahi_put64 = i_ddi_caut_put64; ap->ahi_rep_get8 = i_ddi_caut_rep_get8; ap->ahi_rep_get16 = i_ddi_caut_rep_get16; ap->ahi_rep_get32 = i_ddi_caut_rep_get32; ap->ahi_rep_get64 = i_ddi_caut_rep_get64; ap->ahi_rep_put8 = i_ddi_caut_rep_put8; ap->ahi_rep_put16 = i_ddi_caut_rep_put16; ap->ahi_rep_put32 = i_ddi_caut_rep_put32; ap->ahi_rep_put64 = i_ddi_caut_rep_put64; break; default: break; } } else if (mp->map_op == DDI_MO_UNMAP) { ndi_fmc_remove(rdip, ACC_HANDLE, (void *)hp); } } /* * Function used by PCI error handlers to check if captured address is stored * in the DMA or ACC handle caches. */ int px_handle_lookup(dev_info_t *dip, int type, uint64_t fme_ena, void *afar) { int ret = ndi_fmc_error(dip, NULL, type, fme_ena, afar); return (ret == DDI_FM_UNKNOWN ? DDI_FM_FATAL : ret); } /* * Function used to initialize FMA for our children nodes. Called * through pci busops when child node calls ddi_fm_init. */ /*ARGSUSED*/ int px_fm_init_child(dev_info_t *dip, dev_info_t *cdip, int cap, ddi_iblock_cookie_t *ibc_p) { px_t *px_p = DIP_TO_STATE(dip); ASSERT(ibc_p != NULL); *ibc_p = px_p->px_fm_ibc; return (px_p->px_fm_cap); } /* * lock access for exclusive PCIe access */ void px_bus_enter(dev_info_t *dip, ddi_acc_handle_t handle) { px_pec_t *pec_p = ((px_t *)DIP_TO_STATE(dip))->px_pec_p; /* * Exclusive access has been used for cautious put/get, * Both utilize i_ddi_ontrap which, on sparcv9, implements * similar protection as what on_trap() does, and which calls * membar #Sync to flush out all cpu deferred errors * prior to get/put operation, so here we're not calling * membar #Sync - a difference from what's in pci_bus_enter(). */ mutex_enter(&pec_p->pec_pokefault_mutex); pec_p->pec_acc_hdl = handle; } /* * unlock access for exclusive PCIe access */ /* ARGSUSED */ void px_bus_exit(dev_info_t *dip, ddi_acc_handle_t handle) { px_t *px_p = DIP_TO_STATE(dip); px_pec_t *pec_p = px_p->px_pec_p; pec_p->pec_acc_hdl = NULL; mutex_exit(&pec_p->pec_pokefault_mutex); } /* * PCI error callback which is registered with our parent to call * for PCIe logging when the CPU traps due to PCIe Uncorrectable Errors * and PCI BERR/TO/UE * * Dispatch on all known leaves of this fire device because we cannot tell * which side the error came from. */ /*ARGSUSED*/ int px_fm_callback(dev_info_t *dip, ddi_fm_error_t *derr, const void *impl_data) { px_t *px_p = (px_t *)impl_data; int err = PX_OK; int fatal = 0; int nonfatal = 0; int unknown = 0; int ret = DDI_FM_OK; mutex_enter(&px_p->px_fm_mutex); err = px_err_handle(px_p, derr, PX_TRAP_CALL, B_TRUE); if (!px_lib_is_in_drain_state(px_p)) ret = ndi_fm_handler_dispatch(px_p->px_dip, NULL, derr); mutex_exit(&px_p->px_fm_mutex); switch (ret) { case DDI_FM_FATAL: fatal++; break; case DDI_FM_NONFATAL: nonfatal++; break; case DDI_FM_UNKNOWN: unknown++; break; default: break; } ret = (fatal != 0) ? DDI_FM_FATAL : ((nonfatal != 0) ? DDI_FM_NONFATAL : (((unknown != 0) ? DDI_FM_UNKNOWN : DDI_FM_OK))); /* fire fatal error overrides device error */ if (err & (PX_FATAL_GOS | PX_FATAL_SW)) ret = DDI_FM_FATAL; /* if fire encounts no error, then take whatever device error */ else if ((err != PX_OK) && (ret != DDI_FM_FATAL)) ret = DDI_FM_NONFATAL; return (ret); } static uint16_t px_fabric_get_aer(px_t *px_p, pcie_req_id_t rid) { uint32_t hdr, hdr_next_ptr, hdr_cap_id; uint16_t offset = PCIE_EXT_CAP; int deadcount = 0; /* Find the Advanced Error Register */ hdr = px_fab_get(px_p, rid, offset); hdr_next_ptr = (hdr >> PCIE_EXT_CAP_NEXT_PTR_SHIFT) & PCIE_EXT_CAP_NEXT_PTR_MASK; hdr_cap_id = (hdr >> PCIE_EXT_CAP_ID_SHIFT) & PCIE_EXT_CAP_ID_MASK; while ((hdr_next_ptr != PCIE_EXT_CAP_NEXT_PTR_NULL) && (hdr_cap_id != PCIE_EXT_CAP_ID_AER)) { offset = hdr_next_ptr; hdr = px_fab_get(px_p, rid, offset); hdr_next_ptr = (hdr >> PCIE_EXT_CAP_NEXT_PTR_SHIFT) & PCIE_EXT_CAP_NEXT_PTR_MASK; hdr_cap_id = (hdr >> PCIE_EXT_CAP_ID_SHIFT) & PCIE_EXT_CAP_ID_MASK; if (deadcount++ > 100) break; } if (hdr_cap_id == PCIE_EXT_CAP_ID_AER) return (offset); return (0); } static uint16_t px_fabric_get_pciecap(px_t *px_p, pcie_req_id_t rid) { uint32_t hdr, hdr_next_ptr, hdr_cap_id; uint16_t offset = PCI_CONF_STAT; int deadcount = 0; hdr = px_fab_get(px_p, rid, PCI_CONF_COMM) >> 16; if (!(hdr & PCI_STAT_CAP)) { /* This is not a PCIE device */ return (0); } hdr = px_fab_get(px_p, rid, PCI_CONF_CAP_PTR); hdr_next_ptr = hdr & 0xFF; hdr_cap_id = 0; while ((hdr_next_ptr != PCI_CAP_NEXT_PTR_NULL) && (hdr_cap_id != PCI_CAP_ID_PCI_E)) { offset = hdr_next_ptr; if (hdr_next_ptr < 0x40) { break; } hdr = px_fab_get(px_p, rid, hdr_next_ptr); hdr_next_ptr = (hdr >> 8) & 0xFF; hdr_cap_id = hdr & 0xFF; if (deadcount++ > 100) break; } if (hdr_cap_id == PCI_CAP_ID_PCI_E) return (offset); return (0); } /* * This function checks the primary status registers. * Take the PCI status register and translate it to PCIe equivalent. */ static int px_fabric_handle_psts(px_fabric_cfgspace_t *cs) { uint16_t sts_reg = cs->sts_reg >> 16; uint16_t pci_status; uint32_t pcie_status; int ret = PX_NONFATAL; /* Parity Err == Send/Recv Poisoned TLP */ pci_status = PCI_STAT_S_PERROR | PCI_STAT_PERROR; pcie_status = PCIE_AER_UCE_PTLP | PCIE_AER_UCE_ECRC; if (sts_reg & pci_status) ret |= PX_FABRIC_ERR_SEV(pcie_status, px_fabric_die_ue, px_fabric_die_ue_gos); /* Target Abort == Completer Abort */ pci_status = PCI_STAT_S_TARG_AB | PCI_STAT_R_TARG_AB; pcie_status = PCIE_AER_UCE_CA; if (sts_reg & pci_status) ret |= PX_FABRIC_ERR_SEV(pcie_status, px_fabric_die_ue, px_fabric_die_ue_gos); /* Master Abort == Unsupport Request */ pci_status = PCI_STAT_R_MAST_AB; pcie_status = PCIE_AER_UCE_UR; if (sts_reg & pci_status) ret |= PX_FABRIC_ERR_SEV(pcie_status, px_fabric_die_ue, px_fabric_die_ue_gos); /* System Error == Uncorrectable Error */ pci_status = PCI_STAT_S_SYSERR; pcie_status = -1; if (sts_reg & pci_status) ret |= PX_FABRIC_ERR_SEV(pcie_status, px_fabric_die_ue, px_fabric_die_ue_gos); return (ret); } /* * This function checks the secondary status registers. * Switches and Bridges have a different behavior. */ static int px_fabric_handle_ssts(px_fabric_cfgspace_t *cs) { uint16_t sts_reg = cs->sts_sreg >> 16; int ret = PX_NONFATAL; if (cs->dev_type == PCIE_PCIECAP_DEV_TYPE_PCIE2PCI) { /* * This is a PCIE-PCI bridge, but only check the severity * if this device doesn't support AERs. */ if (!cs->aer_off) ret |= PX_FABRIC_ERR_SEV(sts_reg, px_fabric_die_bdg_sts, px_fabric_die_bdg_sts_gos); } else { /* This is most likely a PCIE switch */ ret |= PX_FABRIC_ERR_SEV(sts_reg, px_fabric_die_sw_sts, px_fabric_die_sw_sts_gos); } return (ret); } /* * This function checks and clears the primary AER. */ static int px_fabric_handle_paer(px_t *px_p, px_fabric_cfgspace_t *cs) { uint32_t chk_reg, chk_reg_gos, off_reg, reg; int ret = PX_NONFATAL; /* Determine severity and clear the AER */ switch (cs->msg_code) { case PCIE_MSG_CODE_ERR_COR: off_reg = PCIE_AER_CE_STS; chk_reg = px_fabric_die_ce; chk_reg_gos = px_fabric_die_ce_gos; reg = cs->aer_ce_reg; break; case PCIE_MSG_CODE_ERR_NONFATAL: off_reg = PCIE_AER_UCE_STS; chk_reg = px_fabric_die_ue; chk_reg_gos = px_fabric_die_ue_gos; reg = cs->aer_ue_reg & ~(cs->aer_sev_reg); break; case PCIE_MSG_CODE_ERR_FATAL: off_reg = PCIE_AER_UCE_STS; chk_reg = px_fabric_die_ue; chk_reg_gos = px_fabric_die_ue_gos; reg = cs->aer_ue_reg & cs->aer_sev_reg; break; default: /* Major error force a panic */ return (PX_FATAL_GOS); } px_fab_set(px_p, cs->rid, cs->aer_off + off_reg, reg); ret |= PX_FABRIC_ERR_SEV(reg, chk_reg, chk_reg_gos); return (ret); } /* * This function checks and clears the secondary AER. */ static int px_fabric_handle_saer(px_t *px_p, px_fabric_cfgspace_t *cs) { uint32_t chk_reg, chk_reg_gos, off_reg, reg; uint32_t sev; int ret = PX_NONFATAL; /* Determine severity and clear the AER */ switch (cs->msg_code) { case PCIE_MSG_CODE_ERR_COR: /* Ignore Correctable Errors */ sev = 0; break; case PCIE_MSG_CODE_ERR_NONFATAL: sev = ~(cs->aer_sev_sreg); break; case PCIE_MSG_CODE_ERR_FATAL: sev = cs->aer_sev_sreg; break; default: /* Major error force a panic */ return (DDI_FM_FATAL); } off_reg = PCIE_AER_SUCE_STS; chk_reg = px_fabric_die_sue; chk_reg_gos = px_fabric_die_sue_gos; reg = cs->aer_ue_sreg & sev; px_fab_set(px_p, cs->rid, cs->aer_off + off_reg, reg); ret |= PX_FABRIC_ERR_SEV(reg, chk_reg, chk_reg_gos); return (ret); } static int px_fabric_handle(px_t *px_p, px_fabric_cfgspace_t *cs) { pcie_req_id_t rid = cs->rid; uint16_t cap_off = cs->cap_off; uint16_t aer_off = cs->aer_off; uint8_t hdr_type = cs->hdr_type; uint16_t dev_type = cs->dev_type; int ret = PX_NONFATAL; if (hdr_type == PCI_HEADER_PPB) { ret |= px_fabric_handle_ssts(cs); } if (!aer_off) { ret |= px_fabric_handle_psts(cs); } if (aer_off) { ret |= px_fabric_handle_paer(px_p, cs); } if (aer_off && (dev_type == PCIE_PCIECAP_DEV_TYPE_PCIE2PCI)) { ret |= px_fabric_handle_saer(px_p, cs); } /* Clear the standard PCIe error registers */ px_fab_set(px_p, rid, cap_off + PCIE_DEVCTL, cs->dev_sts_reg); /* Clear the legacy error registers */ px_fab_set(px_p, rid, PCI_CONF_COMM, cs->sts_reg); /* Clear the legacy secondary error registers */ if (hdr_type == PCI_HEADER_PPB) { px_fab_set(px_p, rid, PCI_BCNF_IO_BASE_LOW, cs->sts_sreg); } return (ret); } static void px_fabric_fill_cs(px_t *px_p, px_fabric_cfgspace_t *cs) { uint16_t cap_off, aer_off; pcie_req_id_t rid = cs->rid; /* Gather Basic Device Information */ cs->hdr_type = (px_fab_get(px_p, rid, PCI_CONF_CACHE_LINESZ) >> 16) & 0xFF; cs->cap_off = px_fabric_get_pciecap(px_p, rid); cap_off = cs->cap_off; if (!cap_off) return; cs->aer_off = px_fabric_get_aer(px_p, rid); aer_off = cs->aer_off; cs->dev_type = px_fab_get(px_p, rid, cap_off) >> 16; cs->dev_type &= PCIE_PCIECAP_DEV_TYPE_MASK; /* Get the Primary Sts Reg */ cs->sts_reg = px_fab_get(px_p, rid, PCI_CONF_COMM); /* If it is a bridge/switch get the Secondary Sts Reg */ if (cs->hdr_type == PCI_HEADER_PPB) cs->sts_sreg = px_fab_get(px_p, rid, PCI_BCNF_IO_BASE_LOW); /* Get the PCIe Dev Sts Reg */ cs->dev_sts_reg = px_fab_get(px_p, rid, cap_off + PCIE_DEVCTL); if (!aer_off) return; /* Get the AER register information */ cs->aer_ce_reg = px_fab_get(px_p, rid, aer_off + PCIE_AER_CE_STS); cs->aer_ue_reg = px_fab_get(px_p, rid, aer_off + PCIE_AER_UCE_STS); cs->aer_sev_reg = px_fab_get(px_p, rid, aer_off + PCIE_AER_UCE_SERV); cs->aer_h1 = px_fab_get(px_p, rid, aer_off + PCIE_AER_HDR_LOG + 0x0); cs->aer_h2 = px_fab_get(px_p, rid, aer_off + PCIE_AER_HDR_LOG + 0x4); cs->aer_h3 = px_fab_get(px_p, rid, aer_off + PCIE_AER_HDR_LOG + 0x8); cs->aer_h4 = px_fab_get(px_p, rid, aer_off + PCIE_AER_HDR_LOG + 0xC); if (cs->dev_type != PCIE_PCIECAP_DEV_TYPE_PCIE2PCI) return; /* If this is a bridge check secondary aer */ cs->aer_ue_sreg = px_fab_get(px_p, rid, aer_off + PCIE_AER_SUCE_STS); cs->aer_sev_sreg = px_fab_get(px_p, rid, aer_off + PCIE_AER_SUCE_SERV); cs->aer_sh1 = px_fab_get(px_p, rid, aer_off + PCIE_AER_SHDR_LOG + 0x0); cs->aer_sh2 = px_fab_get(px_p, rid, aer_off + PCIE_AER_SHDR_LOG + 0x4); cs->aer_sh3 = px_fab_get(px_p, rid, aer_off + PCIE_AER_SHDR_LOG + 0x8); cs->aer_sh4 = px_fab_get(px_p, rid, aer_off + PCIE_AER_SHDR_LOG + 0xC); } /* * If a fabric intr occurs, query and clear the error registers on that device. * Based on the error found return DDI_FM_OK or DDI_FM_FATAL. */ static uint_t px_fabric_check(px_t *px_p, msgcode_t msg_code, pcie_req_id_t rid, ddi_fm_error_t *derr) { dev_info_t *dip = px_p->px_dip; char buf[FM_MAX_CLASS]; px_fabric_cfgspace_t cs; int ret; /* clear cs */ bzero(&cs, sizeof (px_fabric_cfgspace_t)); cs.msg_code = msg_code; cs.rid = rid; px_fabric_fill_cs(px_p, &cs); if (cs.cap_off) ret = px_fabric_handle(px_p, &cs); else ret = PX_FATAL_GOS; (void) snprintf(buf, FM_MAX_CLASS, "%s", PX_FM_FABRIC_CLASS); ddi_fm_ereport_post(dip, buf, derr->fme_ena, DDI_NOSLEEP, FM_VERSION, DATA_TYPE_UINT8, 0, PX_FM_FABRIC_MSG_CODE, DATA_TYPE_UINT8, msg_code, PX_FM_FABRIC_REQ_ID, DATA_TYPE_UINT16, rid, "cap_off", DATA_TYPE_UINT16, cs.cap_off, "aer_off", DATA_TYPE_UINT16, cs.aer_off, "sts_reg", DATA_TYPE_UINT16, cs.sts_reg >> 16, "sts_sreg", DATA_TYPE_UINT16, cs.sts_sreg >> 16, "dev_sts_reg", DATA_TYPE_UINT16, cs.dev_sts_reg >> 16, "aer_ce", DATA_TYPE_UINT32, cs.aer_ce_reg, "aer_ue", DATA_TYPE_UINT32, cs.aer_ue_reg, "aer_sev", DATA_TYPE_UINT32, cs.aer_sev_reg, "aer_h1", DATA_TYPE_UINT32, cs.aer_h1, "aer_h2", DATA_TYPE_UINT32, cs.aer_h2, "aer_h3", DATA_TYPE_UINT32, cs.aer_h3, "aer_h4", DATA_TYPE_UINT32, cs.aer_h4, "saer_ue", DATA_TYPE_UINT32, cs.aer_ue_sreg, "saer_sev", DATA_TYPE_UINT32, cs.aer_sev_sreg, "saer_h1", DATA_TYPE_UINT32, cs.aer_sh1, "saer_h2", DATA_TYPE_UINT32, cs.aer_sh2, "saer_h3", DATA_TYPE_UINT32, cs.aer_sh3, "saer_h4", DATA_TYPE_UINT32, cs.aer_sh4, "severity", DATA_TYPE_UINT32, ret, NULL); /* Check for protected access */ switch (derr->fme_flag) { case DDI_FM_ERR_EXPECTED: case DDI_FM_ERR_PEEK: case DDI_FM_ERR_POKE: ret &= PX_FATAL_GOS; break; } if (px_fabric_die && (ret & (PX_FATAL_GOS | PX_FATAL_SW))) ret = DDI_FM_FATAL; return (ret); } /* * px_err_fabric_intr: * Interrupt handler for PCIE fabric block. * o lock * o create derr * o px_err_handle(leaf, with jbc) * o send ereport(fire fmri, derr, payload = BDF) * o dispatch (leaf) * o unlock * o handle error: fatal? fm_panic() : return INTR_CLAIMED) */ /* ARGSUSED */ uint_t px_err_fabric_intr(px_t *px_p, msgcode_t msg_code, pcie_req_id_t rid) { dev_info_t *rpdip = px_p->px_dip; int err = PX_OK, ret = DDI_FM_OK, fab_err = DDI_FM_OK; ddi_fm_error_t derr; mutex_enter(&px_p->px_fm_mutex); /* Create the derr */ bzero(&derr, sizeof (ddi_fm_error_t)); derr.fme_version = DDI_FME_VERSION; derr.fme_ena = fm_ena_generate(0, FM_ENA_FMT1); derr.fme_flag = DDI_FM_ERR_UNEXPECTED; /* send ereport/handle/clear fire registers */ err |= px_err_handle(px_p, &derr, PX_INTR_CALL, B_TRUE); /* Check and clear the fabric error */ fab_err = px_fabric_check(px_p, msg_code, rid, &derr); /* Check all child devices for errors */ ret = ndi_fm_handler_dispatch(rpdip, NULL, &derr); mutex_exit(&px_p->px_fm_mutex); /* * PX_FATAL_HW indicates a condition recovered from Fatal-Reset, * therefore it does not cause panic. */ if ((err & (PX_FATAL_GOS | PX_FATAL_SW)) || (ret == DDI_FM_FATAL) || (fab_err == DDI_FM_FATAL)) PX_FM_PANIC("%s#%d: Fatal PCIe Fabric Error has occurred" "(%x,%x,%x)\n", ddi_driver_name(rpdip), ddi_get_instance(rpdip), err, fab_err, ret); return (DDI_INTR_CLAIMED); } /* * px_err_safeacc_check: * Check to see if a peek/poke and cautious access is currently being * done on a particular leaf. * * Safe access reads induced fire errors will be handled by cpu trap handler * which will call px_fm_callback() which calls this function. In that * case, the derr fields will be set by trap handler with the correct values. * * Safe access writes induced errors will be handled by px interrupt * handlers, this function will fill in the derr fields. * * If a cpu trap does occur, it will quiesce all other interrupts allowing * the cpu trap error handling to finish before Fire receives an interrupt. * * If fire does indeed have an error when a cpu trap occurs as a result of * a safe access, a trap followed by a Mondo/Fabric interrupt will occur. * In which case derr will be initialized as "UNEXPECTED" by the interrupt * handler and this function will need to find if this error occured in the * middle of a safe access operation. * * @param px_p leaf in which to check access * @param derr fm err data structure to be updated */ void px_err_safeacc_check(px_t *px_p, ddi_fm_error_t *derr) { px_pec_t *pec_p = px_p->px_pec_p; int acctype = pec_p->pec_safeacc_type; ASSERT(MUTEX_HELD(&px_p->px_fm_mutex)); if (derr->fme_flag != DDI_FM_ERR_UNEXPECTED) { return; } /* safe access checking */ switch (acctype) { case DDI_FM_ERR_EXPECTED: /* * cautious access protection, protected from all err. */ ASSERT(MUTEX_HELD(&pec_p->pec_pokefault_mutex)); ddi_fm_acc_err_get(pec_p->pec_acc_hdl, derr, DDI_FME_VERSION); derr->fme_flag = acctype; derr->fme_acc_handle = pec_p->pec_acc_hdl; break; case DDI_FM_ERR_POKE: /* * ddi_poke protection, check nexus and children for * expected errors. */ ASSERT(MUTEX_HELD(&pec_p->pec_pokefault_mutex)); membar_sync(); derr->fme_flag = acctype; break; case DDI_FM_ERR_PEEK: derr->fme_flag = acctype; break; } }