/* * 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" /* * PCI nexus utility routines: * property and config routines for attach() * reg/intr/range/assigned-address property routines for bus_map() * init_child() * fault handling */ #include #include #include #include #include #include #include #include #include #include #include /*LINTLIBRARY*/ /* * get_pci_properties * * This function is called from the attach routine to get the key * properties of the pci nodes. * * used by: pci_attach() * * return value: DDI_FAILURE on failure */ int get_pci_properties(pci_t *pci_p, dev_info_t *dip) { int i; /* * Get the device's port id. */ if ((pci_p->pci_id = (uint32_t)pci_get_portid(dip)) == -1u) { cmn_err(CE_WARN, "%s%d: no portid property\n", ddi_driver_name(dip), ddi_get_instance(dip)); return (DDI_FAILURE); } /* * Get the bus-ranges property. */ i = sizeof (pci_p->pci_bus_range); if (ddi_getlongprop_buf(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, "bus-range", (caddr_t)&pci_p->pci_bus_range, &i) != DDI_SUCCESS) { cmn_err(CE_WARN, "%s%d: no bus-range property\n", ddi_driver_name(dip), ddi_get_instance(dip)); return (DDI_FAILURE); } DEBUG2(DBG_ATTACH, dip, "get_pci_properties: bus-range (%x,%x)\n", pci_p->pci_bus_range.lo, pci_p->pci_bus_range.hi); /* * disable streaming cache if necessary, this must be done * before PBM is configured. */ if (ddi_prop_exists(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, "no-streaming-cache")) { pci_stream_buf_enable = 0; pci_stream_buf_exists = 0; } /* * Get the ranges property. */ if (ddi_getlongprop(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, "ranges", (caddr_t)&pci_p->pci_ranges, &pci_p->pci_ranges_length) != DDI_SUCCESS) { cmn_err(CE_WARN, "%s%d: no ranges property\n", ddi_driver_name(dip), ddi_get_instance(dip)); return (DDI_FAILURE); } pci_fix_ranges(pci_p->pci_ranges, pci_p->pci_ranges_length / sizeof (pci_ranges_t)); /* * Determine the number upa slot interrupts. */ pci_p->pci_numproxy = pci_get_numproxy(pci_p->pci_dip); DEBUG1(DBG_ATTACH, dip, "get_pci_properties: numproxy=%d\n", pci_p->pci_numproxy); pci_p->pci_thermal_interrupt = ddi_getprop(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, "thermal-interrupt", -1); DEBUG1(DBG_ATTACH, dip, "get_pci_properties: thermal_interrupt=%d\n", pci_p->pci_thermal_interrupt); return (DDI_SUCCESS); } /* * free_pci_properties: * * This routine frees the memory used to cache the * "ranges" properties of the pci bus device node. * * used by: pci_detach() * * return value: none */ void free_pci_properties(pci_t *pci_p) { kmem_free(pci_p->pci_ranges, pci_p->pci_ranges_length); } /* * pci_reloc_reg * * If the "reg" entry (*pci_rp) is relocatable, lookup "assigned-addresses" * property to fetch corresponding relocated address. * * used by: pci_map() * * return value: * * DDI_SUCCESS - on success * DDI_ME_INVAL - regspec is invalid */ int pci_reloc_reg(dev_info_t *dip, dev_info_t *rdip, pci_t *pci_p, pci_regspec_t *rp) { int assign_len, assign_entries, i; pci_regspec_t *assign_p; register uint32_t phys_hi = rp->pci_phys_hi; DEBUG5(DBG_MAP | DBG_CONT, dip, "\tpci_reloc_reg fr: %x.%x.%x %x.%x\n", rp->pci_phys_hi, rp->pci_phys_mid, rp->pci_phys_low, rp->pci_size_hi, rp->pci_size_low); if ((phys_hi & PCI_RELOCAT_B) || !(phys_hi & PCI_ADDR_MASK)) return (DDI_SUCCESS); /* phys_mid must be 0 regardless space type. */ if (rp->pci_phys_mid != 0 || rp->pci_size_hi != 0) { DEBUG0(DBG_MAP | DBG_CONT, pci_p->pci_dip, "phys_mid or size_hi not 0\n"); return (DDI_ME_INVAL); } if (ddi_getlongprop(DDI_DEV_T_ANY, rdip, DDI_PROP_DONTPASS, "assigned-addresses", (caddr_t)&assign_p, &assign_len)) return (DDI_ME_INVAL); assign_entries = assign_len / sizeof (pci_regspec_t); for (i = 0; i < assign_entries; i++, assign_p++) { uint32_t space_type = phys_hi & PCI_REG_ADDR_M; uint32_t assign_type = assign_p->pci_phys_hi & PCI_REG_ADDR_M; uint32_t assign_addr = PCI_REG_BDFR_G(assign_p->pci_phys_hi); if (PCI_REG_BDFR_G(phys_hi) != assign_addr) continue; if (space_type == assign_type) { /* exact match */ rp->pci_phys_low += assign_p->pci_phys_low; break; } if (space_type == PCI_ADDR_MEM64 && assign_type == PCI_ADDR_MEM32) { rp->pci_phys_low += assign_p->pci_phys_low; rp->pci_phys_hi ^= PCI_ADDR_MEM64 ^ PCI_ADDR_MEM32; break; } } kmem_free(assign_p - i, assign_len); DEBUG5(DBG_MAP | DBG_CONT, dip, "\tpci_reloc_reg to: %x.%x.%x %x.%x\n", rp->pci_phys_hi, rp->pci_phys_mid, rp->pci_phys_low, rp->pci_size_hi, rp->pci_size_low); return (i < assign_entries ? DDI_SUCCESS : DDI_ME_INVAL); } /* * use "ranges" to translate relocated pci regspec into parent space */ int pci_xlate_reg(pci_t *pci_p, pci_regspec_t *pci_rp, struct regspec *new_rp) { int n; pci_ranges_t *rng_p = pci_p->pci_ranges; int rng_n = pci_p->pci_ranges_length / sizeof (pci_ranges_t); uint32_t space_type = PCI_REG_ADDR_G(pci_rp->pci_phys_hi); uint32_t reg_end, reg_begin = pci_rp->pci_phys_low; uint32_t sz = pci_rp->pci_size_low; uint32_t rng_begin, rng_end; if (space_type == PCI_REG_ADDR_G(PCI_ADDR_CONFIG)) { if (reg_begin > PCI_CONF_HDR_SIZE) return (DDI_ME_INVAL); sz = sz ? MIN(sz, PCI_CONF_HDR_SIZE) : PCI_CONF_HDR_SIZE; reg_begin += pci_rp->pci_phys_hi; } reg_end = reg_begin + sz - 1; for (n = 0; n < rng_n; n++, rng_p++) { if (space_type != PCI_REG_ADDR_G(rng_p->child_high)) continue; /* not the same space type */ rng_begin = rng_p->child_low; if (space_type == PCI_REG_ADDR_G(PCI_ADDR_CONFIG)) rng_begin += rng_p->child_high; rng_end = rng_begin + rng_p->size_low - 1; if (reg_begin >= rng_begin && reg_end <= rng_end) break; } if (n >= rng_n) return (DDI_ME_REGSPEC_RANGE); new_rp->regspec_addr = reg_begin - rng_begin + rng_p->parent_low; new_rp->regspec_bustype = rng_p->parent_high; new_rp->regspec_size = sz; DEBUG4(DBG_MAP | DBG_CONT, pci_p->pci_dip, "\tpci_xlate_reg: entry %d new_rp %x.%x %x\n", n, new_rp->regspec_bustype, new_rp->regspec_addr, sz); return (DDI_SUCCESS); } /* * report_dev * * This function is called from our control ops routine on a * DDI_CTLOPS_REPORTDEV request. * * The display format is * * at device function * * where * * this device's name property * this device's instance number * parent device's name property * parent device's instance number * this device's device number * this device's function number */ int report_dev(dev_info_t *dip) { if (dip == (dev_info_t *)0) return (DDI_FAILURE); cmn_err(CE_CONT, "?PCI-device: %s@%s, %s%d\n", ddi_node_name(dip), ddi_get_name_addr(dip), ddi_driver_name(dip), ddi_get_instance(dip)); return (DDI_SUCCESS); } /* * reg property for pcimem nodes that covers the entire address * space for the node: config, io, or memory. */ pci_regspec_t pci_pcimem_reg[3] = { {PCI_ADDR_CONFIG, 0, 0, 0, 0x800000 }, {(uint_t)(PCI_ADDR_IO|PCI_RELOCAT_B), 0, 0, 0, PCI_IO_SIZE }, {(uint_t)(PCI_ADDR_MEM32|PCI_RELOCAT_B), 0, 0, 0, PCI_MEM_SIZE } }; /* * name_child * * This function is called from init_child to name a node. It is * also passed as a callback for node merging functions. * * return value: DDI_SUCCESS, DDI_FAILURE */ static int name_child(dev_info_t *child, char *name, int namelen) { pci_regspec_t *pci_rp; int reglen; uint_t func; char **unit_addr; uint_t n; /* * Set the address portion of the node name based on * unit-address property, if it exists. * The interpretation of the unit-address is DD[,F] * where DD is the device id and F is the function. */ if (ddi_prop_lookup_string_array(DDI_DEV_T_ANY, child, DDI_PROP_DONTPASS, "unit-address", &unit_addr, &n) == DDI_PROP_SUCCESS) { if (n != 1 || *unit_addr == NULL || **unit_addr == 0) { cmn_err(CE_WARN, "unit-address property in %s.conf" " not well-formed", ddi_driver_name(child)); ddi_prop_free(unit_addr); return (DDI_FAILURE); } (void) snprintf(name, namelen, "%s", *unit_addr); ddi_prop_free(unit_addr); return (DDI_SUCCESS); } /* * The unit-address property is does not exist. Set the address * portion of the node name based on the function and device number. */ if (ddi_prop_lookup_int_array(DDI_DEV_T_ANY, child, DDI_PROP_DONTPASS, "reg", (int **)&pci_rp, (uint_t *)®len) == DDI_SUCCESS) { if (((reglen * sizeof (int)) % sizeof (pci_regspec_t)) != 0) { cmn_err(CE_WARN, "reg property not well-formed"); return (DDI_FAILURE); } func = PCI_REG_FUNC_G(pci_rp[0].pci_phys_hi); if (func != 0) (void) snprintf(name, namelen, "%x,%x", PCI_REG_DEV_G(pci_rp[0].pci_phys_hi), func); else (void) snprintf(name, namelen, "%x", PCI_REG_DEV_G(pci_rp[0].pci_phys_hi)); ddi_prop_free(pci_rp); return (DDI_SUCCESS); } cmn_err(CE_WARN, "cannot name pci child '%s'", ddi_node_name(child)); return (DDI_FAILURE); } int uninit_child(pci_t *pci_p, dev_info_t *child) { DEBUG2(DBG_CTLOPS, pci_p->pci_dip, "DDI_CTLOPS_UNINITCHILD: arg=%s%d\n", ddi_driver_name(child), ddi_get_instance(child)); (void) pm_uninit_child(child); ddi_set_name_addr(child, NULL); ddi_remove_minor_node(child, NULL); impl_rem_dev_props(child); DEBUG0(DBG_PWR, ddi_get_parent(child), "\n\n"); /* * Handle chip specific post-uninit-child tasks. */ pci_post_uninit_child(pci_p); return (DDI_SUCCESS); } /* * init_child * * This function is called from our control ops routine on a * DDI_CTLOPS_INITCHILD request. It builds and sets the device's * parent private data area. * * used by: pci_ctlops() * * return value: none */ int init_child(pci_t *pci_p, dev_info_t *child) { pci_regspec_t *pci_rp; char name[10]; ddi_acc_handle_t config_handle; uint16_t command_preserve, command; uint8_t bcr; uint8_t header_type, min_gnt; uint16_t latency_timer; uint_t n; int i, no_config; /* * The following is a special case for pcimem nodes. * For these nodes we create a reg property with a * single entry that covers the entire address space * for the node (config, io or memory). */ if (strcmp(ddi_driver_name(child), "pcimem") == 0) { (void) ddi_prop_create(DDI_DEV_T_NONE, child, DDI_PROP_CANSLEEP, "reg", (caddr_t)pci_pcimem_reg, sizeof (pci_pcimem_reg)); ddi_set_name_addr(child, "0"); ddi_set_parent_data(child, NULL); return (DDI_SUCCESS); } /* * Check whether the node has config space or is a hard decode * node (possibly created by a driver.conf file). */ no_config = ddi_prop_get_int(DDI_DEV_T_ANY, child, DDI_PROP_DONTPASS, "no-config", 0); /* * Pseudo nodes indicate a prototype node with per-instance * properties to be merged into the real h/w device node. * However, do not merge if the no-config property is set * (see PSARC 2000/088). */ if ((ndi_dev_is_persistent_node(child) == 0) && (no_config == 0)) { extern int pci_allow_pseudo_children; if (ddi_getlongprop(DDI_DEV_T_ANY, child, DDI_PROP_DONTPASS, "reg", (caddr_t)&pci_rp, &i) == DDI_SUCCESS) { cmn_err(CE_WARN, "cannot merge prototype from %s.conf", ddi_driver_name(child)); kmem_free(pci_rp, i); return (DDI_NOT_WELL_FORMED); } /* * Name the child */ if (name_child(child, name, 10) != DDI_SUCCESS) return (DDI_FAILURE); ddi_set_name_addr(child, name); ddi_set_parent_data(child, NULL); /* * Try to merge the properties from this prototype * node into real h/w nodes. */ if (ndi_merge_node(child, name_child) == DDI_SUCCESS) { /* * Merged ok - return failure to remove the node. */ ddi_set_name_addr(child, NULL); return (DDI_FAILURE); } /* workaround for ddivs to run under PCI */ if (pci_allow_pseudo_children) return (DDI_SUCCESS); cmn_err(CE_WARN, "!%s@%s: %s.conf properties not merged", ddi_driver_name(child), ddi_get_name_addr(child), ddi_driver_name(child)); ddi_set_name_addr(child, NULL); return (DDI_NOT_WELL_FORMED); } if (name_child(child, name, 10) != DDI_SUCCESS) return (DDI_FAILURE); ddi_set_name_addr(child, name); if (no_config != 0) { /* * There is no config space so there's nothing more to do. */ return (DDI_SUCCESS); } if (pm_init_child(child) != DDI_SUCCESS) return (DDI_FAILURE); /* * If configuration registers were previously saved by * child (before it went to D3), then let the child do the * restore to set up the config regs as it'll first need to * power the device out of D3. */ if (ddi_prop_exists(DDI_DEV_T_ANY, child, DDI_PROP_DONTPASS, "config-regs-saved-by-child") == 1) { DEBUG0(DBG_PWR, child, "INITCHILD: config regs to be restored by child\n"); return (DDI_SUCCESS); } DEBUG2(DBG_PWR, ddi_get_parent(child), "INITCHILD: config regs setup for %s@%s\n", ddi_node_name(child), ddi_get_name_addr(child)); /* * Map the child configuration space to for initialization. * We assume the obp will do the following in the devices * config space: * * Set the latency-timer register to values appropriate * for the devices on the bus (based on other devices * MIN_GNT and MAX_LAT registers. * * Set the fast back-to-back enable bit in the command * register if it's supported and all devices on the bus * have the capability. * */ if (pci_config_setup(child, &config_handle) != DDI_SUCCESS) { (void) pm_uninit_child(child); ddi_set_name_addr(child, NULL); return (DDI_FAILURE); } /* * Determine the configuration header type. */ header_type = pci_config_get8(config_handle, PCI_CONF_HEADER); DEBUG2(DBG_INIT_CLD, pci_p->pci_dip, "%s: header_type=%x\n", ddi_driver_name(child), header_type); /* * Support for "command-preserve" property. Note that we * add PCI_COMM_BACK2BACK_ENAB to the bits to be preserved * since the obp will set this if the device supports and * all targets on the same bus support it. Since psycho * doesn't support PCI_COMM_BACK2BACK_ENAB, it will never * be set. This is just here in case future revs do support * PCI_COMM_BACK2BACK_ENAB. */ command_preserve = ddi_prop_get_int(DDI_DEV_T_ANY, child, DDI_PROP_DONTPASS, "command-preserve", 0); DEBUG2(DBG_INIT_CLD, pci_p->pci_dip, "%s: command-preserve=%x\n", ddi_driver_name(child), command_preserve); command = pci_config_get16(config_handle, PCI_CONF_COMM); command &= (command_preserve | PCI_COMM_BACK2BACK_ENAB); command |= (pci_command_default & ~command_preserve); pci_config_put16(config_handle, PCI_CONF_COMM, command); command = pci_config_get16(config_handle, PCI_CONF_COMM); DEBUG2(DBG_INIT_CLD, pci_p->pci_dip, "%s: command=%x\n", ddi_driver_name(child), pci_config_get16(config_handle, PCI_CONF_COMM)); /* * If the device has a bus control register then program it * based on the settings in the command register. */ if ((header_type & PCI_HEADER_TYPE_M) == PCI_HEADER_ONE) { bcr = pci_config_get8(config_handle, PCI_BCNF_BCNTRL); if (pci_command_default & PCI_COMM_PARITY_DETECT) bcr |= PCI_BCNF_BCNTRL_PARITY_ENABLE; if (pci_command_default & PCI_COMM_SERR_ENABLE) bcr |= PCI_BCNF_BCNTRL_SERR_ENABLE; bcr |= PCI_BCNF_BCNTRL_MAST_AB_MODE; pci_config_put8(config_handle, PCI_BCNF_BCNTRL, bcr); } /* * Initialize cache-line-size configuration register if needed. */ if (pci_set_cache_line_size_register && ddi_getprop(DDI_DEV_T_ANY, child, DDI_PROP_DONTPASS, "cache-line-size", 0) == 0) { pci_config_put8(config_handle, PCI_CONF_CACHE_LINESZ, PCI_CACHE_LINE_SIZE); n = pci_config_get8(config_handle, PCI_CONF_CACHE_LINESZ); if (n != 0) (void) ndi_prop_update_int(DDI_DEV_T_NONE, child, "cache-line-size", n); } /* * Initialize latency timer registers if needed. */ if (pci_set_latency_timer_register && ddi_getprop(DDI_DEV_T_ANY, child, DDI_PROP_DONTPASS, "latency-timer", 0) == 0) { latency_timer = pci_latency_timer; if ((header_type & PCI_HEADER_TYPE_M) == PCI_HEADER_ONE) { pci_config_put8(config_handle, PCI_BCNF_LATENCY_TIMER, latency_timer); } else { min_gnt = pci_config_get8(config_handle, PCI_CONF_MIN_G); DEBUG2(DBG_INIT_CLD, pci_p->pci_dip, "%s: min_gnt=%x\n", ddi_driver_name(child), min_gnt); if (min_gnt != 0) { switch (pci_p->pci_pbm_p->pbm_speed) { case PBM_SPEED_33MHZ: latency_timer = min_gnt * 8; break; case PBM_SPEED_66MHZ: latency_timer = min_gnt * 4; break; } } } latency_timer = MIN(latency_timer, 0xff); pci_config_put8(config_handle, PCI_CONF_LATENCY_TIMER, latency_timer); n = pci_config_get8(config_handle, PCI_CONF_LATENCY_TIMER); if (n != 0) (void) ndi_prop_update_int(DDI_DEV_T_NONE, child, "latency-timer", n); } pci_config_teardown(&config_handle); /* * Handle chip specific init-child tasks. */ pci_post_init_child(pci_p, child); return (DDI_SUCCESS); } /* * get_nreg_set * * Given a dev info pointer to a pci child, this routine returns the * number of sets in its "reg" property. * * used by: pci_ctlops() - DDI_CTLOPS_NREGS * * return value: # of reg sets on success, zero on error */ uint_t get_nreg_set(dev_info_t *child) { pci_regspec_t *pci_rp; int i, n; /* * Get the reg property for the device. */ if (ddi_getlongprop(DDI_DEV_T_ANY, child, DDI_PROP_DONTPASS, "reg", (caddr_t)&pci_rp, &i) != DDI_SUCCESS) return (0); n = i / (int)sizeof (pci_regspec_t); kmem_free(pci_rp, i); return (n); } /* * get_nintr * * Given a dev info pointer to a pci child, this routine returns the * number of items in its "interrupts" property. * * used by: pci_ctlops() - DDI_CTLOPS_NREGS * * return value: # of interrupts on success, zero on error */ uint_t get_nintr(dev_info_t *child) { int *pci_ip; int i, n; if (ddi_getlongprop(DDI_DEV_T_ANY, child, DDI_PROP_DONTPASS, "interrupts", (caddr_t)&pci_ip, &i) != DDI_SUCCESS) return (0); n = i / (int)sizeof (uint_t); kmem_free(pci_ip, i); return (n); } uint64_t pci_get_cfg_pabase(pci_t *pci_p) { int i; pci_ranges_t *rangep = pci_p->pci_ranges; int nrange = pci_p->pci_ranges_length / sizeof (pci_ranges_t); uint32_t cfg_space_type = PCI_REG_ADDR_G(PCI_ADDR_CONFIG); ASSERT(cfg_space_type == 0); for (i = 0; i < nrange; i++, rangep++) { if (PCI_REG_ADDR_G(rangep->child_high) == cfg_space_type) break; } if (i >= nrange) cmn_err(CE_PANIC, "no cfg space in pci(%p) ranges prop.\n", (void *)pci_p); return (((uint64_t)rangep->parent_high << 32) | rangep->parent_low); } int pci_cfg_report(dev_info_t *dip, ddi_fm_error_t *derr, pci_errstate_t *pci_err_p, int caller, uint32_t prierr) { int fatal = 0; int nonfatal = 0; int i; ASSERT(dip); derr->fme_ena = derr->fme_ena ? derr->fme_ena : fm_ena_generate(0, FM_ENA_FMT1); for (i = 0; pci_err_tbl[i].err_class != NULL; i++) { if (pci_err_p->pci_cfg_stat & pci_err_tbl[i].reg_bit) { char buf[FM_MAX_CLASS]; (void) snprintf(buf, FM_MAX_CLASS, "%s.%s", PCI_ERROR_SUBCLASS, pci_err_tbl[i].err_class); ddi_fm_ereport_post(dip, buf, derr->fme_ena, DDI_NOSLEEP, FM_VERSION, DATA_TYPE_UINT8, 0, PCI_CONFIG_STATUS, DATA_TYPE_UINT16, pci_err_p->pci_cfg_stat, PCI_CONFIG_COMMAND, DATA_TYPE_UINT16, pci_err_p->pci_cfg_comm, PCI_PA, DATA_TYPE_UINT64, pci_err_p->pci_pa, NULL); switch (pci_err_tbl[i].reg_bit) { case PCI_STAT_S_SYSERR: /* * address parity error on dma - treat as fatal */ fatal++; break; case PCI_STAT_R_MAST_AB: case PCI_STAT_R_TARG_AB: case PCI_STAT_S_PERROR: if (prierr) { /* * piow case are already handled in * pbm_afsr_report() */ break; } if (caller != PCI_TRAP_CALL) { /* * if we haven't come from trap handler * we won't have an address */ fatal++; break; } /* * queue target ereport - use return from * pci_lookup_handle() to determine if sync * or async */ nonfatal++; pci_target_enqueue(derr->fme_ena, pci_err_tbl[i].terr_class, PCI_ERROR_SUBCLASS, (uint64_t)derr->fme_bus_specific); break; default: /* * dpe on dma write or ta on dma */ nonfatal++; break; } } } if (fatal) return (DDI_FM_FATAL); else if (nonfatal) return (DDI_FM_NONFATAL); return (DDI_FM_OK); } void pci_child_cfg_save(dev_info_t *dip) { dev_info_t *cdip; int ret = DDI_SUCCESS; /* * Save the state of the configuration headers of child * nodes. */ for (cdip = ddi_get_child(dip); cdip != NULL; cdip = ddi_get_next_sibling(cdip)) { /* * Not interested in children who are not already * init'ed. They will be set up in init_child(). */ if (i_ddi_node_state(cdip) < DS_INITIALIZED) { DEBUG2(DBG_DETACH, dip, "DDI_SUSPEND: skipping " "%s%d not in CF1\n", ddi_driver_name(cdip), ddi_get_instance(cdip)); continue; } /* * Only save config registers if not already saved by child. */ if (ddi_prop_exists(DDI_DEV_T_ANY, cdip, DDI_PROP_DONTPASS, SAVED_CONFIG_REGS) == 1) { continue; } /* * The nexus needs to save config registers. Create a property * so it knows to restore on resume. */ ret = ndi_prop_create_boolean(DDI_DEV_T_NONE, cdip, "nexus-saved-config-regs"); if (ret != DDI_PROP_SUCCESS) { cmn_err(CE_WARN, "%s%d can't update prop %s", ddi_driver_name(cdip), ddi_get_instance(cdip), "nexus-saved-config-regs"); } (void) pci_save_config_regs(cdip); } } void pci_child_cfg_restore(dev_info_t *dip) { dev_info_t *cdip; /* * Restore config registers for children that did not save * their own registers. Children pwr states are UNKNOWN after * a resume since it is possible for the PM framework to call * resume without an actual power cycle. (ie if suspend fails). */ for (cdip = ddi_get_child(dip); cdip != NULL; cdip = ddi_get_next_sibling(cdip)) { /* * Not interested in children who are not already * init'ed. They will be set up by init_child(). */ if (i_ddi_node_state(cdip) < DS_INITIALIZED) { DEBUG2(DBG_DETACH, dip, "DDI_RESUME: skipping %s%d not in CF1\n", ddi_driver_name(cdip), ddi_get_instance(cdip)); continue; } /* * Only restore config registers if saved by nexus. */ if (ddi_prop_exists(DDI_DEV_T_ANY, cdip, DDI_PROP_DONTPASS, "nexus-saved-config-regs") == 1) { (void) pci_restore_config_regs(cdip); DEBUG2(DBG_PWR, dip, "DDI_RESUME: nexus restoring %s%d config regs\n", ddi_driver_name(cdip), ddi_get_instance(cdip)); if (ndi_prop_remove(DDI_DEV_T_NONE, cdip, "nexus-saved-config-regs") != DDI_PROP_SUCCESS) { cmn_err(CE_WARN, "%s%d can't remove prop %s", ddi_driver_name(cdip), ddi_get_instance(cdip), "nexus-saved-config-regs"); } } } }