/* * 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 2008 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ /* * Copyright 2012 Garrett D'Amore . All rights reserved. */ /* * PCI to PCI bus bridge nexus driver */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* prom_printf */ #include #include #include #if defined(DEBUG) && !defined(lint) static uint_t simba_debug_flags = 0; #define D_IDENTIFY 0x00000001 #define D_ATTACH 0x00000002 #define D_DETACH 0x00000004 #define D_MAP 0x00000008 #define D_CTLOPS 0x00000010 #define D_G_ISPEC 0x00000020 #define D_A_ISPEC 0x00000040 #define D_INIT_CLD 0x00400000 #define D_FAULT 0x00000080 #define DEBUG0(f, s) if ((f)& simba_debug_flags) \ prom_printf("simba: " s "\n") #define DEBUG1(f, s, a) if ((f)& simba_debug_flags) \ prom_printf("simba: " s "\n", a) #define DEBUG2(f, s, a, b) if ((f)& simba_debug_flags) \ prom_printf("simba: " s "\n", a, b) #define DEBUG3(f, s, a, b, c) if ((f)& simba_debug_flags) \ prom_printf("simba: " s "\n", a, b, c) #define DEBUG4(f, s, a, b, c, d) if ((f)& simba_debug_flags) \ prom_printf("simba: " s "\n", a, b, c, d) #define DEBUG5(f, s, a, b, c, d, e) if ((f)& simba_debug_flags) \ prom_printf("simba: " s "\n", a, b, c, d, e) #define DEBUG6(f, s, a, b, c, d, e, ff) if ((f)& simba_debug_flags) \ prom_printf("simba: " s "\n", a, b, c, d, e, ff) #else #define DEBUG0(f, s) #define DEBUG1(f, s, a) #define DEBUG2(f, s, a, b) #define DEBUG3(f, s, a, b, c) #define DEBUG4(f, s, a, b, c, d) #define DEBUG5(f, s, a, b, c, d, e) #define DEBUG6(f, s, a, b, c, d, e, ff) #endif /* * The variable controls the default setting of the command register * for pci devices. See simba_initchild() for details. */ static ushort_t simba_command_default = PCI_COMM_SERR_ENABLE | PCI_COMM_WAIT_CYC_ENAB | PCI_COMM_PARITY_DETECT | PCI_COMM_ME | PCI_COMM_MAE | PCI_COMM_IO; static int simba_bus_map(dev_info_t *, dev_info_t *, ddi_map_req_t *, off_t, off_t, caddr_t *); static int simba_ctlops(dev_info_t *, dev_info_t *, ddi_ctl_enum_t, void *, void *); static int simba_fm_init_child(dev_info_t *dip, dev_info_t *tdip, int cap, ddi_iblock_cookie_t *ibc); static void simba_bus_enter(dev_info_t *dip, ddi_acc_handle_t handle); static void simba_bus_exit(dev_info_t *dip, ddi_acc_handle_t handle); struct bus_ops simba_bus_ops = { BUSO_REV, simba_bus_map, 0, 0, 0, i_ddi_map_fault, 0, ddi_dma_allochdl, ddi_dma_freehdl, ddi_dma_bindhdl, ddi_dma_unbindhdl, ddi_dma_flush, ddi_dma_win, ddi_dma_mctl, simba_ctlops, ddi_bus_prop_op, ndi_busop_get_eventcookie, ndi_busop_add_eventcall, ndi_busop_remove_eventcall, ndi_post_event, 0, 0, 0, simba_fm_init_child, NULL, simba_bus_enter, simba_bus_exit, 0, i_ddi_intr_ops }; static int simba_open(dev_t *devp, int flags, int otyp, cred_t *credp); static int simba_close(dev_t dev, int flags, int otyp, cred_t *credp); static int simba_ioctl(dev_t dev, int cmd, intptr_t arg, int mode, cred_t *credp, int *rvalp); static struct cb_ops simba_cb_ops = { simba_open, /* open */ simba_close, /* close */ nulldev, /* strategy */ nulldev, /* print */ nulldev, /* dump */ nulldev, /* read */ nulldev, /* write */ simba_ioctl, /* ioctl */ nodev, /* devmap */ nodev, /* mmap */ nodev, /* segmap */ nochpoll, /* poll */ ddi_prop_op, /* cb_prop_op */ NULL, /* streamtab */ D_NEW | D_MP | D_HOTPLUG, /* Driver compatibility flag */ CB_REV, /* rev */ nodev, /* int (*cb_aread)() */ nodev /* int (*cb_awrite)() */ }; static int simba_probe(dev_info_t *); static int simba_attach(dev_info_t *devi, ddi_attach_cmd_t cmd); static int simba_detach(dev_info_t *devi, ddi_detach_cmd_t cmd); static int simba_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result); struct dev_ops simba_ops = { DEVO_REV, /* devo_rev */ 0, /* refcnt */ simba_info, /* info */ nulldev, /* identify */ simba_probe, /* probe */ simba_attach, /* attach */ simba_detach, /* detach */ nulldev, /* reset */ &simba_cb_ops, /* driver operations */ &simba_bus_ops, /* bus operations */ NULL, ddi_quiesce_not_supported, /* devo_quiesce */ }; /* * Module linkage information for the kernel. */ static struct modldrv modldrv = { &mod_driverops, /* Type of module */ "SIMBA PCI to PCI bridge nexus driver", &simba_ops, /* driver ops */ }; static struct modlinkage modlinkage = { MODREV_1, (void *)&modldrv, NULL }; /* * Simba specific error state structure */ struct simba_errstate { char *error; ushort_t pci_cfg_stat; ushort_t pci_cfg_sec_stat; uint64_t afsr; uint64_t afar; int bridge_secondary; }; struct simba_cfg_state { dev_info_t *dip; ushort_t command; uchar_t cache_line_size; uchar_t latency_timer; uchar_t header_type; uchar_t bus_number; uchar_t sec_bus_number; uchar_t sub_bus_number; uchar_t sec_latency_timer; ushort_t bridge_control; }; /* * soft state pointer and structure template: */ static void *simba_state; typedef struct { dev_info_t *dip; /* * configuration register state for the bus: */ ddi_acc_handle_t config_handle; uchar_t simba_cache_line_size; uchar_t simba_latency_timer; /* * cpr support: */ uint_t config_state_index; struct simba_cfg_state *simba_config_state_p; ddi_iblock_cookie_t fm_ibc; int fm_cap; kmutex_t simba_mutex; uint_t simba_soft_state; #define SIMBA_SOFT_STATE_CLOSED 0x00 #define SIMBA_SOFT_STATE_OPEN 0x01 #define SIMBA_SOFT_STATE_OPEN_EXCL 0x02 } simba_devstate_t; /* * The following variable enables a workaround for the following obp bug: * * 1234181 - obp should set latency timer registers in pci * configuration header * * Until this bug gets fixed in the obp, the following workaround should * be enabled. */ static uint_t simba_set_latency_timer_register = 1; /* * The following variable enables a workaround for an obp bug to be * submitted. A bug requesting a workaround fof this problem has * been filed: * * 1235094 - need workarounds on positron nexus drivers to set cache * line size registers * * Until this bug gets fixed in the obp, the following workaround should * be enabled. */ static uint_t simba_set_cache_line_size_register = 1; /* * forward function declarations: */ static void simba_uninitchild(dev_info_t *); static int simba_initchild(dev_info_t *child); static void simba_save_config_regs(simba_devstate_t *simba_p); static void simba_restore_config_regs(simba_devstate_t *simba_p); static int simba_err_callback(dev_info_t *dip, ddi_fm_error_t *derr, const void *impl_data); int _init(void) { int e; DEBUG0(D_ATTACH, "_init() installing module...\n"); if ((e = ddi_soft_state_init(&simba_state, sizeof (simba_devstate_t), 1)) == 0 && (e = mod_install(&modlinkage)) != 0) ddi_soft_state_fini(&simba_state); DEBUG0(D_ATTACH, "_init() module installed\n"); return (e); } int _fini(void) { int e; DEBUG0(D_ATTACH, "_fini() removing module...\n"); if ((e = mod_remove(&modlinkage)) == 0) ddi_soft_state_fini(&simba_state); return (e); } int _info(struct modinfo *modinfop) { DEBUG0(D_ATTACH, "_info() called.\n"); return (mod_info(&modlinkage, modinfop)); } /*ARGSUSED*/ static int simba_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result) { simba_devstate_t *simba_p; /* per simba state pointer */ int instance; instance = getminor((dev_t)arg); simba_p = (simba_devstate_t *)ddi_get_soft_state(simba_state, instance); switch (infocmd) { default: return (DDI_FAILURE); case DDI_INFO_DEVT2INSTANCE: *result = (void *)(uintptr_t)instance; return (DDI_SUCCESS); case DDI_INFO_DEVT2DEVINFO: if (simba_p == NULL) return (DDI_FAILURE); *result = (void *)simba_p->dip; return (DDI_SUCCESS); } } /*ARGSUSED*/ static int simba_probe(register dev_info_t *devi) { DEBUG0(D_ATTACH, "simba_probe() called.\n"); return (DDI_PROBE_SUCCESS); } /*ARGSUSED*/ static int simba_attach(dev_info_t *devi, ddi_attach_cmd_t cmd) { int instance; simba_devstate_t *simba; switch (cmd) { case DDI_ATTACH: DEBUG1(D_ATTACH, "attach(%p) ATTACH\n", devi); /* * Make sure the "device_type" property exists. */ (void) ddi_prop_update_string(DDI_DEV_T_NONE, devi, "device_type", "pci"); /* * Allocate and get soft state structure. */ instance = ddi_get_instance(devi); if (ddi_soft_state_zalloc(simba_state, instance) != DDI_SUCCESS) return (DDI_FAILURE); simba = (simba_devstate_t *)ddi_get_soft_state(simba_state, instance); simba->dip = devi; mutex_init(&simba->simba_mutex, NULL, MUTEX_DRIVER, NULL); simba->simba_soft_state = SIMBA_SOFT_STATE_CLOSED; /* * create minor node for devctl interfaces */ if (ddi_create_minor_node(devi, "devctl", S_IFCHR, instance, DDI_NT_NEXUS, 0) != DDI_SUCCESS) { mutex_destroy(&simba->simba_mutex); ddi_soft_state_free(simba_state, instance); return (DDI_FAILURE); } if (pci_config_setup(devi, &simba->config_handle) != DDI_SUCCESS) { ddi_remove_minor_node(devi, "devctl"); mutex_destroy(&simba->simba_mutex); ddi_soft_state_free(simba_state, instance); return (DDI_FAILURE); } /* * Simba cache line size is 64 bytes and hardwired. */ simba->simba_cache_line_size = pci_config_get8(simba->config_handle, PCI_CONF_CACHE_LINESZ); simba->simba_latency_timer = pci_config_get8(simba->config_handle, PCI_CONF_LATENCY_TIMER); /* simba specific, clears up the pri/sec status registers */ pci_config_put16(simba->config_handle, 0x6, 0xffff); pci_config_put16(simba->config_handle, 0x1e, 0xffff); DEBUG2(D_ATTACH, "simba_attach(): clsz=%x, lt=%x\n", simba->simba_cache_line_size, simba->simba_latency_timer); /* * Initialize FMA support */ simba->fm_cap = DDI_FM_EREPORT_CAPABLE | DDI_FM_ERRCB_CAPABLE | DDI_FM_ACCCHK_CAPABLE | DDI_FM_DMACHK_CAPABLE; /* * Call parent to get it's capablity */ ddi_fm_init(devi, &simba->fm_cap, &simba->fm_ibc); ASSERT((simba->fm_cap & DDI_FM_ERRCB_CAPABLE) && (simba->fm_cap & DDI_FM_EREPORT_CAPABLE)); pci_ereport_setup(devi); ddi_fm_handler_register(devi, simba_err_callback, simba); ddi_report_dev(devi); DEBUG0(D_ATTACH, "attach(): ATTACH done\n"); return (DDI_SUCCESS); case DDI_RESUME: /* * Get the soft state structure for the bridge. */ simba = (simba_devstate_t *) ddi_get_soft_state(simba_state, ddi_get_instance(devi)); simba_restore_config_regs(simba); return (DDI_SUCCESS); } return (DDI_FAILURE); } /*ARGSUSED*/ static int simba_detach(dev_info_t *devi, ddi_detach_cmd_t cmd) { simba_devstate_t *simba; simba = (simba_devstate_t *) ddi_get_soft_state(simba_state, ddi_get_instance(devi)); switch (cmd) { case DDI_DETACH: DEBUG0(D_DETACH, "detach() called\n"); ddi_fm_handler_unregister(devi); pci_ereport_teardown(devi); ddi_fm_fini(devi); pci_config_teardown(&simba->config_handle); (void) ddi_prop_remove(DDI_DEV_T_NONE, devi, "device_type"); ddi_remove_minor_node(devi, "devctl"); mutex_destroy(&simba->simba_mutex); ddi_soft_state_free(simba_state, ddi_get_instance(devi)); return (DDI_SUCCESS); case DDI_SUSPEND: simba_save_config_regs(simba); return (DDI_SUCCESS); } return (DDI_FAILURE); } /*ARGSUSED*/ static int simba_bus_map(dev_info_t *dip, dev_info_t *rdip, ddi_map_req_t *mp, off_t offset, off_t len, caddr_t *vaddrp) { register dev_info_t *pdip; DEBUG3(D_MAP, "simba_bus_map(): dip=%p, rdip=%p, mp=%p", dip, rdip, mp); DEBUG3(D_MAP, "simba_bus_map(): offset=%lx, len=%lx, vaddrp=%p", offset, len, vaddrp); pdip = (dev_info_t *)DEVI(dip)->devi_parent; return ((DEVI(pdip)->devi_ops->devo_bus_ops->bus_map) (pdip, rdip, mp, offset, len, vaddrp)); } /* * Registered error handling callback with our parent */ static int simba_err_callback(dev_info_t *dip, ddi_fm_error_t *derr, const void *impl_data) { simba_devstate_t *simba = (simba_devstate_t *)impl_data; struct simba_errstate simba_err; int ret = 0; bzero(&simba_err, sizeof (struct simba_errstate)); simba_err.afsr = pci_config_get64(simba->config_handle, 0xe8); simba_err.afar = pci_config_get64(simba->config_handle, 0xf0); derr->fme_ena = fm_ena_generate(0, FM_ENA_FMT1); pci_ereport_post(dip, derr, NULL); ret = derr->fme_status; DEBUG6(D_FAULT, "%s-%d: cleaning up fault bits %x %x %x.%8x\n", ddi_driver_name(simba->dip), ddi_get_instance(simba->dip), simba_err.pci_cfg_stat, simba_err.pci_cfg_sec_stat, (uint_t)(simba_err.afsr >> 32), (uint_t)simba_err.afsr); pci_config_put64(simba->config_handle, 0xe8, simba_err.afsr); return (ret); } #if defined(DEBUG) && !defined(lint) static char *ops[] = { "DDI_CTLOPS_DMAPMAPC", "DDI_CTLOPS_INITCHILD", "DDI_CTLOPS_UNINITCHILD", "DDI_CTLOPS_REPORTDEV", "DDI_CTLOPS_REPORTINT", "DDI_CTLOPS_REGSIZE", "DDI_CTLOPS_NREGS", "DDI_CTLOPS_RESERVED0", "DDI_CTLOPS_SIDDEV", "DDI_CTLOPS_SLAVEONLY", "DDI_CTLOPS_AFFINITY", "DDI_CTLOPS_IOMIN", "DDI_CTLOPS_PTOB", "DDI_CTLOPS_BTOP", "DDI_CTLOPS_BTOPR", "DDI_CTLOPS_RESERVED1", "DDI_CTLOPS_RESERVED2", "DDI_CTLOPS_RESERVED3", "DDI_CTLOPS_RESERVED4", "DDI_CTLOPS_RESERVED5", "DDI_CTLOPS_DVMAPAGESIZE", "DDI_CTLOPS_POWER", "DDI_CTLOPS_ATTACH", "DDI_CTLOPS_DETACH", "DDI_CTLOPS_POKE", "DDI_CTLOPS_PEEK" }; #endif /*ARGSUSED*/ static int simba_ctlops(dev_info_t *dip, dev_info_t *rdip, ddi_ctl_enum_t ctlop, void *arg, void *result) { int reglen; int rn; int totreg; pci_regspec_t *drv_regp; DEBUG6(D_CTLOPS, "simba_ctlops(): dip=%p rdip=%p ctlop=%x-%s arg=%p result=%p", dip, rdip, ctlop, ctlop < (sizeof (ops) / sizeof (ops[0])) ? ops[ctlop] : "Unknown", arg, result); switch (ctlop) { case DDI_CTLOPS_REPORTDEV: if (rdip == (dev_info_t *)0) return (DDI_FAILURE); cmn_err(CE_CONT, "?PCI-device: %s@%s, %s%d\n", ddi_node_name(rdip), ddi_get_name_addr(rdip), ddi_driver_name(rdip), ddi_get_instance(rdip)); return (DDI_SUCCESS); case DDI_CTLOPS_INITCHILD: return (simba_initchild((dev_info_t *)arg)); case DDI_CTLOPS_UNINITCHILD: simba_uninitchild((dev_info_t *)arg); return (DDI_SUCCESS); case DDI_CTLOPS_SIDDEV: return (DDI_SUCCESS); case DDI_CTLOPS_REGSIZE: case DDI_CTLOPS_NREGS: if (rdip == (dev_info_t *)0) return (DDI_FAILURE); break; default: DEBUG0(D_CTLOPS, "simba_ctlops(): calling ddi_ctlops()"); return (ddi_ctlops(dip, rdip, ctlop, arg, result)); } *(int *)result = 0; if (ddi_getlongprop(DDI_DEV_T_ANY, rdip, DDI_PROP_DONTPASS | DDI_PROP_CANSLEEP, "reg", (caddr_t)&drv_regp, ®len) != DDI_SUCCESS) return (DDI_FAILURE); totreg = reglen / sizeof (pci_regspec_t); if (ctlop == DDI_CTLOPS_NREGS) *(int *)result = totreg; else if (ctlop == DDI_CTLOPS_REGSIZE) { rn = *(int *)arg; if (rn >= totreg) { kmem_free(drv_regp, reglen); return (DDI_FAILURE); } *(off_t *)result = drv_regp[rn].pci_size_low | ((uint64_t)drv_regp[rn].pci_size_hi << 32); } kmem_free(drv_regp, reglen); DEBUG1(D_CTLOPS, "simba_ctlops(): *result=%lx\n", *(off_t *)result); return (DDI_SUCCESS); } static int simba_name_child(dev_info_t *child, char *name, int namelen) { uint_t n, slot, func; pci_regspec_t *pci_rp; if (ndi_dev_is_persistent_node(child) == 0) { char **unit_addr; /* name .conf nodes by "unit-address" property" */ if (ddi_prop_lookup_string_array(DDI_DEV_T_ANY, child, DDI_PROP_DONTPASS, "unit-address", &unit_addr, &n) != DDI_PROP_SUCCESS) { cmn_err(CE_WARN, "cannot name node from %s.conf", ddi_driver_name(child)); return (DDI_FAILURE); } 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); } /* name hardware nodes by "reg" property */ if (ddi_prop_lookup_int_array(DDI_DEV_T_ANY, child, 0, "reg", (int **)&pci_rp, &n) != DDI_SUCCESS) return (DDI_FAILURE); /* get the device identifications */ slot = PCI_REG_DEV_G(pci_rp->pci_phys_hi); func = PCI_REG_FUNC_G(pci_rp->pci_phys_hi); if (func != 0) (void) snprintf(name, namelen, "%x,%x", slot, func); else (void) snprintf(name, namelen, "%x", slot); ddi_prop_free(pci_rp); return (DDI_SUCCESS); } static int simba_initchild(dev_info_t *child) { char name[MAXNAMELEN]; int i; ddi_acc_handle_t config_handle; ushort_t command_preserve, command; uchar_t header_type; uchar_t min_gnt, latency_timer; simba_devstate_t *simba; uint_t n; DEBUG1(D_INIT_CLD, "simba_initchild(): child=%p\n", child); /* * Pseudo nodes indicate a prototype node with per-instance * properties to be merged into the real h/w device node. * The interpretation of the unit-address is DD[,F] * where DD is the device id and F is the function. */ if (ndi_dev_is_persistent_node(child) == 0) { extern int pci_allow_pseudo_children; pci_regspec_t *pci_rp; 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); } if (simba_name_child(child, name, MAXNAMELEN) != DDI_SUCCESS) return (DDI_NOT_WELL_FORMED); 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, simba_name_child) == DDI_SUCCESS) { /* * Merged ok - return failure to remove the node. */ simba_uninitchild(child); return (DDI_FAILURE); } /* workaround for ddivs to run under PCI */ if (pci_allow_pseudo_children) return (DDI_SUCCESS); /* * The child was not merged into a h/w node, * but there's not much we can do with it other * than return failure to cause the node to be removed. */ cmn_err(CE_WARN, "!%s@%s: %s.conf properties not merged", ddi_driver_name(child), ddi_get_name_addr(child), ddi_driver_name(child)); simba_uninitchild(child); return (DDI_NOT_WELL_FORMED); } /* * Initialize real h/w nodes */ if (simba_name_child(child, name, MAXNAMELEN) != DDI_SUCCESS) return (DDI_FAILURE); ddi_set_name_addr(child, name); ddi_set_parent_data(child, NULL); if (pci_config_setup(child, &config_handle) != DDI_SUCCESS) { simba_uninitchild(child); return (DDI_FAILURE); } DEBUG0(D_INIT_CLD, "simba_initchild(): pci_config_setup success!\n"); /* * Determine the configuration header type. */ header_type = pci_config_get8(config_handle, PCI_CONF_HEADER); /* * Support for the "command-preserve" property. */ command_preserve = ddi_prop_get_int(DDI_DEV_T_ANY, child, DDI_PROP_DONTPASS, "command-preserve", 0); command = pci_config_get16(config_handle, PCI_CONF_COMM); command &= (command_preserve | PCI_COMM_BACK2BACK_ENAB); command |= (simba_command_default & ~command_preserve); pci_config_put16(config_handle, PCI_CONF_COMM, command); /* clean up all PCI child devices status register */ pci_config_put16(config_handle, PCI_CONF_STAT, 0xffff); /* * If the device has a primary bus control register then program it * based on the settings in the command register. */ if ((header_type & PCI_HEADER_TYPE_M) == PCI_HEADER_ONE) { ushort_t bcr = pci_config_get16(config_handle, PCI_BCNF_BCNTRL); if (simba_command_default & PCI_COMM_PARITY_DETECT) bcr |= PCI_BCNF_BCNTRL_PARITY_ENABLE; if (simba_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); } simba = (simba_devstate_t *)ddi_get_soft_state(simba_state, ddi_get_instance(ddi_get_parent(child))); /* * Initialize cache-line-size configuration register if needed. */ if (simba_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, simba->simba_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 configuration registers if needed. */ if (simba_set_latency_timer_register && ddi_getprop(DDI_DEV_T_ANY, child, DDI_PROP_DONTPASS, "latency-timer", 0) == 0) { if ((header_type & PCI_HEADER_TYPE_M) == PCI_HEADER_ONE) { latency_timer = simba->simba_latency_timer; pci_config_put8(config_handle, PCI_BCNF_LATENCY_TIMER, simba->simba_latency_timer); } else { min_gnt = pci_config_get8(config_handle, PCI_CONF_MIN_G); latency_timer = min_gnt * 8; } 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); DEBUG0(D_INIT_CLD, "simba_initchild(): pci_config_teardown called\n"); return (DDI_SUCCESS); } static void simba_uninitchild(dev_info_t *dip) { ddi_set_name_addr(dip, NULL); /* * Strip the node to properly convert it back to prototype form */ impl_rem_dev_props(dip); } /* * simba_save_config_regs * * This routine saves the state of the configuration registers of all * the child nodes of each PBM. * * used by: simba_detach() on suspends * * return value: none */ static void simba_save_config_regs(simba_devstate_t *simba_p) { int i; dev_info_t *dip; ddi_acc_handle_t ch; struct simba_cfg_state *statep; for (i = 0, dip = ddi_get_child(simba_p->dip); dip != NULL; dip = ddi_get_next_sibling(dip)) { if (i_ddi_devi_attached(dip)) i++; } if (!i) return; simba_p->simba_config_state_p = kmem_zalloc(i * sizeof (struct simba_cfg_state), KM_NOSLEEP); if (!simba_p->simba_config_state_p) { cmn_err(CE_WARN, "not enough memrory to save simba child\n"); return; } simba_p->config_state_index = i; for (statep = simba_p->simba_config_state_p, dip = ddi_get_child(simba_p->dip); dip != NULL; dip = ddi_get_next_sibling(dip)) { if (!i_ddi_devi_attached(dip)) { DEBUG4(D_DETACH, "%s%d: skipping unattached %s%d\n", ddi_driver_name(simba_p->dip), ddi_get_instance(simba_p->dip), ddi_driver_name(dip), ddi_get_instance(dip)); continue; } DEBUG4(D_DETACH, "%s%d: saving regs for %s%d\n", ddi_driver_name(simba_p->dip), ddi_get_instance(simba_p->dip), ddi_driver_name(dip), ddi_get_instance(dip)); if (pci_config_setup(dip, &ch) != DDI_SUCCESS) { DEBUG4(D_DETACH, "%s%d: can't config space for %s%d\n", ddi_driver_name(simba_p->dip), ddi_get_instance(simba_p->dip), ddi_driver_name(dip), ddi_get_instance(dip)); continue; } DEBUG3(D_DETACH, "%s%d: saving child dip=%p\n", ddi_driver_name(simba_p->dip), ddi_get_instance(simba_p->dip), dip); statep->dip = dip; statep->command = pci_config_get16(ch, PCI_CONF_COMM); statep->header_type = pci_config_get8(ch, PCI_CONF_HEADER); if ((statep->header_type & PCI_HEADER_TYPE_M) == PCI_HEADER_ONE) statep->bridge_control = pci_config_get16(ch, PCI_BCNF_BCNTRL); statep->cache_line_size = pci_config_get8(ch, PCI_CONF_CACHE_LINESZ); statep->latency_timer = pci_config_get8(ch, PCI_CONF_LATENCY_TIMER); if ((statep->header_type & PCI_HEADER_TYPE_M) == PCI_HEADER_ONE) statep->sec_latency_timer = pci_config_get8(ch, PCI_BCNF_LATENCY_TIMER); /* * Simba specific. */ if (pci_config_get16(ch, PCI_CONF_VENID) == PCI_SIMBA_VENID && pci_config_get16(ch, PCI_CONF_DEVID) == PCI_SIMBA_DEVID) { statep->bus_number = pci_config_get8(ch, PCI_BCNF_PRIBUS); statep->sec_bus_number = pci_config_get8(ch, PCI_BCNF_SECBUS); statep->sub_bus_number = pci_config_get8(ch, PCI_BCNF_SUBBUS); statep->bridge_control = pci_config_get16(ch, PCI_BCNF_BCNTRL); } pci_config_teardown(&ch); statep++; } } /* * simba_restore_config_regs * * This routine restores the state of the configuration registers of all * the child nodes of each PBM. * * used by: simba_attach() on resume * * return value: none */ static void simba_restore_config_regs(simba_devstate_t *simba_p) { int i; dev_info_t *dip; ddi_acc_handle_t ch; struct simba_cfg_state *statep = simba_p->simba_config_state_p; if (!simba_p->config_state_index) return; for (i = 0; i < simba_p->config_state_index; i++, statep++) { dip = statep->dip; if (!dip) { cmn_err(CE_WARN, "%s%d: skipping bad dev info (%d)\n", ddi_driver_name(simba_p->dip), ddi_get_instance(simba_p->dip), i); continue; } DEBUG5(D_ATTACH, "%s%d: restoring regs for %p-%s%d\n", ddi_driver_name(simba_p->dip), ddi_get_instance(simba_p->dip), dip, ddi_driver_name(dip), ddi_get_instance(dip)); if (pci_config_setup(dip, &ch) != DDI_SUCCESS) { DEBUG4(D_ATTACH, "%s%d: can't config space for %s%d\n", ddi_driver_name(simba_p->dip), ddi_get_instance(simba_p->dip), ddi_driver_name(dip), ddi_get_instance(dip)); continue; } pci_config_put16(ch, PCI_CONF_COMM, statep->command); if ((statep->header_type & PCI_HEADER_TYPE_M) == PCI_HEADER_ONE) pci_config_put16(ch, PCI_BCNF_BCNTRL, statep->bridge_control); /* * Simba specific. */ if (pci_config_get16(ch, PCI_CONF_VENID) == PCI_SIMBA_VENID && pci_config_get16(ch, PCI_CONF_DEVID) == PCI_SIMBA_DEVID) { pci_config_put8(ch, PCI_BCNF_PRIBUS, statep->bus_number); pci_config_put8(ch, PCI_BCNF_SECBUS, statep->sec_bus_number); pci_config_put8(ch, PCI_BCNF_SUBBUS, statep->sub_bus_number); pci_config_put16(ch, PCI_BCNF_BCNTRL, statep->bridge_control); } pci_config_put8(ch, PCI_CONF_CACHE_LINESZ, statep->cache_line_size); pci_config_put8(ch, PCI_CONF_LATENCY_TIMER, statep->latency_timer); if ((statep->header_type & PCI_HEADER_TYPE_M) == PCI_HEADER_ONE) pci_config_put8(ch, PCI_BCNF_LATENCY_TIMER, statep->sec_latency_timer); pci_config_teardown(&ch); } kmem_free(simba_p->simba_config_state_p, simba_p->config_state_index * sizeof (struct simba_cfg_state)); simba_p->simba_config_state_p = NULL; simba_p->config_state_index = 0; } /* ARGSUSED */ static int simba_open(dev_t *devp, int flags, int otyp, cred_t *credp) { simba_devstate_t *simba_p; /* * Make sure the open is for the right file type. */ if (otyp != OTYP_CHR) return (EINVAL); /* * Get the soft state structure for the device. */ simba_p = (simba_devstate_t *)ddi_get_soft_state(simba_state, getminor(*devp)); if (simba_p == NULL) return (ENXIO); /* * Handle the open by tracking the device state. */ mutex_enter(&simba_p->simba_mutex); if (flags & FEXCL) { if (simba_p->simba_soft_state != SIMBA_SOFT_STATE_CLOSED) { mutex_exit(&simba_p->simba_mutex); return (EBUSY); } simba_p->simba_soft_state = SIMBA_SOFT_STATE_OPEN_EXCL; } else { if (simba_p->simba_soft_state == SIMBA_SOFT_STATE_OPEN_EXCL) { mutex_exit(&simba_p->simba_mutex); return (EBUSY); } simba_p->simba_soft_state = SIMBA_SOFT_STATE_OPEN; } mutex_exit(&simba_p->simba_mutex); return (0); } /* ARGSUSED */ static int simba_close(dev_t dev, int flags, int otyp, cred_t *credp) { simba_devstate_t *simba_p; if (otyp != OTYP_CHR) return (EINVAL); simba_p = (simba_devstate_t *)ddi_get_soft_state(simba_state, getminor(dev)); if (simba_p == NULL) return (ENXIO); mutex_enter(&simba_p->simba_mutex); simba_p->simba_soft_state = SIMBA_SOFT_STATE_CLOSED; mutex_exit(&simba_p->simba_mutex); return (0); } /* * simba_ioctl: devctl hotplug controls */ /* ARGSUSED */ static int simba_ioctl(dev_t dev, int cmd, intptr_t arg, int mode, cred_t *credp, int *rvalp) { simba_devstate_t *simba_p; dev_info_t *self; struct devctl_iocdata *dcp; uint_t bus_state; int rv = 0; simba_p = (simba_devstate_t *)ddi_get_soft_state(simba_state, getminor(dev)); if (simba_p == NULL) return (ENXIO); self = simba_p->dip; /* * We can use the generic implementation for these ioctls */ switch (cmd) { case DEVCTL_DEVICE_GETSTATE: case DEVCTL_DEVICE_ONLINE: case DEVCTL_DEVICE_OFFLINE: case DEVCTL_BUS_GETSTATE: return (ndi_devctl_ioctl(self, cmd, arg, mode, 0)); } /* * read devctl ioctl data */ if (ndi_dc_allochdl((void *)arg, &dcp) != NDI_SUCCESS) return (EFAULT); switch (cmd) { case DEVCTL_DEVICE_RESET: rv = ENOTSUP; break; case DEVCTL_BUS_QUIESCE: if (ndi_get_bus_state(self, &bus_state) == NDI_SUCCESS) if (bus_state == BUS_QUIESCED) break; (void) ndi_set_bus_state(self, BUS_QUIESCED); break; case DEVCTL_BUS_UNQUIESCE: if (ndi_get_bus_state(self, &bus_state) == NDI_SUCCESS) if (bus_state == BUS_ACTIVE) break; (void) ndi_set_bus_state(self, BUS_ACTIVE); break; case DEVCTL_BUS_RESET: rv = ENOTSUP; break; case DEVCTL_BUS_RESETALL: rv = ENOTSUP; break; default: rv = ENOTTY; } ndi_dc_freehdl(dcp); return (rv); } /* * Initialize FMA resources for children devices. Called when * child calls ddi_fm_init(). */ /*ARGSUSED*/ static int simba_fm_init_child(dev_info_t *dip, dev_info_t *tdip, int cap, ddi_iblock_cookie_t *ibc) { simba_devstate_t *simba_p = ddi_get_soft_state(simba_state, ddi_get_instance(dip)); *ibc = simba_p->fm_ibc; return (simba_p->fm_cap); } static void simba_bus_enter(dev_info_t *dip, ddi_acc_handle_t handle) { i_ndi_busop_access_enter(dip, handle); } /* ARGSUSED */ static void simba_bus_exit(dev_info_t *dip, ddi_acc_handle_t handle) { i_ndi_busop_access_exit(dip, handle); }