/* * Copyright (c) 2000,2001 Jonathan Chen. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification, immediately at the beginning of the file. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD$ */ /* * Cardbus Bus Driver * * much of the bus code was stolen directly from sys/pci/pci.c * (Copyright (c) 1997, Stefan Esser ) * * Written by Jonathan Chen */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "power_if.h" #include "pcib_if.h" /* sysctl vars */ SYSCTL_NODE(_hw, OID_AUTO, cardbus, CTLFLAG_RD, 0, "CardBus parameters"); int cardbus_debug = 0; TUNABLE_INT("hw.cardbus.debug", &cardbus_debug); SYSCTL_INT(_hw_cardbus, OID_AUTO, debug, CTLFLAG_RW, &cardbus_debug, 0, "CardBus debug"); int cardbus_cis_debug = 0; TUNABLE_INT("hw.cardbus.cis_debug", &cardbus_cis_debug); SYSCTL_INT(_hw_cardbus, OID_AUTO, cis_debug, CTLFLAG_RW, &cardbus_cis_debug, 0, "CardBus CIS debug"); #define DPRINTF(a) if (cardbus_debug) printf a #define DEVPRINTF(x) if (cardbus_debug) device_printf x static int cardbus_probe(device_t cbdev); static int cardbus_attach(device_t cbdev); static int cardbus_detach(device_t cbdev); static void device_setup_regs(device_t brdev, int b, int s, int f, pcicfgregs *cfg); static int cardbus_attach_card(device_t cbdev); static int cardbus_detach_card(device_t cbdev, int flags); static void cardbus_driver_added(device_t cbdev, driver_t *driver); static void cardbus_read_extcap(device_t cbdev, pcicfgregs *cfg); static void cardbus_hdrtypedata(device_t brdev, int b, int s, int f, pcicfgregs *cfg); static struct cardbus_devinfo *cardbus_read_device(device_t brdev, int b, int s, int f); static int cardbus_freecfg(struct cardbus_devinfo *dinfo); static void cardbus_print_verbose(struct cardbus_devinfo *dinfo); static int cardbus_set_resource(device_t cbdev, device_t child, int type, int rid, u_long start, u_long count, struct resource *res); static int cardbus_get_resource(device_t cbdev, device_t child, int type, int rid, u_long *startp, u_long *countp); static void cardbus_delete_resource(device_t cbdev, device_t child, int type, int rid); static int cardbus_set_resource_method(device_t cbdev, device_t child, int type, int rid, u_long start, u_long count); static int cardbus_get_resource_method(device_t cbdev, device_t child, int type, int rid, u_long *startp, u_long *countp); static void cardbus_delete_resource_method(device_t cbdev, device_t child, int type, int rid); static void cardbus_release_all_resources(device_t cbdev, struct cardbus_devinfo *dinfo); static struct resource *cardbus_alloc_resource(device_t cbdev, device_t child, int type, int *rid, u_long start, u_long end, u_long count, u_int flags); static int cardbus_release_resource(device_t cbdev, device_t child, int type, int rid, struct resource *r); static int cardbus_setup_intr(device_t cbdev, device_t child, struct resource *irq, int flags, driver_intr_t *intr, void *arg, void **cookiep); static int cardbus_teardown_intr(device_t cbdev, device_t child, struct resource *irq, void *cookie); static int cardbus_print_resources(struct resource_list *rl, const char *name, int type, const char *format); static int cardbus_print_child(device_t cbdev, device_t child); static void cardbus_probe_nomatch(device_t cbdev, device_t child); static int cardbus_read_ivar(device_t cbdev, device_t child, int which, u_long *result); static int cardbus_write_ivar(device_t cbdev, device_t child, int which, uintptr_t value); static int cardbus_set_powerstate_method(device_t cbdev, device_t child, int state); static int cardbus_get_powerstate_method(device_t cbdev, device_t child); static u_int32_t cardbus_read_config_method(device_t cbdev, device_t child, int reg, int width); static void cardbus_write_config_method(device_t cbdev, device_t child, int reg, u_int32_t val, int width); static __inline void cardbus_set_command_bit(device_t cbdev, device_t child, u_int16_t bit); static __inline void cardbus_clear_command_bit(device_t cbdev, device_t child, u_int16_t bit); static void cardbus_enable_busmaster_method(device_t cbdev, device_t child); static void cardbus_disable_busmaster_method(device_t cbdev, device_t child); static void cardbus_enable_io_method(device_t cbdev, device_t child, int space); static void cardbus_disable_io_method(device_t cbdev, device_t child, int space); /************************************************************************/ /* Probe/Attach */ /************************************************************************/ static int cardbus_probe(device_t cbdev) { device_set_desc(cbdev, "CardBus bus"); return 0; } static int cardbus_attach(device_t cbdev) { return 0; } static int cardbus_detach(device_t cbdev) { cardbus_detach_card(cbdev, DETACH_FORCE); return 0; } static int cardbus_suspend(device_t self) { cardbus_detach_card(self, DETACH_FORCE); return (0); } static int cardbus_resume(device_t self) { return (0); } /************************************************************************/ /* Attach/Detach card */ /************************************************************************/ static void device_setup_regs(device_t brdev, int b, int s, int f, pcicfgregs *cfg) { PCIB_WRITE_CONFIG(brdev, b, s, f, PCIR_INTLINE, pci_get_irq(device_get_parent(brdev)), 1); cfg->intline = PCIB_READ_CONFIG(brdev, b, s, f, PCIR_INTLINE, 1); PCIB_WRITE_CONFIG(brdev, b, s, f, PCIR_CACHELNSZ, 0x08, 1); cfg->cachelnsz = PCIB_READ_CONFIG(brdev, b, s, f, PCIR_CACHELNSZ, 1); PCIB_WRITE_CONFIG(brdev, b, s, f, PCIR_LATTIMER, 0xa8, 1); cfg->lattimer = PCIB_READ_CONFIG(brdev, b, s, f, PCIR_LATTIMER, 1); PCIB_WRITE_CONFIG(brdev, b, s, f, PCIR_MINGNT, 0x14, 1); cfg->mingnt = PCIB_READ_CONFIG(brdev, b, s, f, PCIR_MINGNT, 1); PCIB_WRITE_CONFIG(brdev, b, s, f, PCIR_MAXLAT, 0x14, 1); cfg->maxlat = PCIB_READ_CONFIG(brdev, b, s, f, PCIR_MAXLAT, 1); } #define DETACH_NOWARN 0x800 static int cardbus_attach_card(device_t cbdev) { device_t brdev = device_get_parent(cbdev); int cardattached = 0; static int curr_bus_number = 2; /* XXX EVILE BAD (see below) */ int bus, slot, func; cardbus_detach_card(cbdev, DETACH_NOWARN); /* detach existing cards */ POWER_ENABLE_SOCKET(brdev, cbdev); bus = pcib_get_bus(cbdev); if (bus == 0) { /* * XXX EVILE BAD XXX * Not all BIOSes initialize the secondary bus number properly, * so if the default is bad, we just put one in and hope it * works. */ bus = curr_bus_number; pci_write_config(brdev, PCIR_SECBUS_2, curr_bus_number, 1); pci_write_config(brdev, PCIR_SUBBUS_2, curr_bus_number + 2, 1); curr_bus_number += 3; } /* For each function, set it up and try to attach a driver to it */ for (slot = 0; slot <= CARDBUS_SLOTMAX; slot++) { int cardbusfunchigh = 0; for (func = 0; func <= cardbusfunchigh; func++) { struct cardbus_devinfo *dinfo = cardbus_read_device(brdev, bus, slot, func); if (dinfo == NULL) continue; if (dinfo->pci.cfg.mfdev) cardbusfunchigh = CARDBUS_FUNCMAX; device_setup_regs(brdev, bus, slot, func, &dinfo->pci.cfg); cardbus_print_verbose(dinfo); dinfo->pci.cfg.dev = device_add_child(cbdev, NULL, -1); if (!dinfo->pci.cfg.dev) { DEVPRINTF((cbdev, "Cannot add child!\n")); cardbus_freecfg(dinfo); continue; } resource_list_init(&dinfo->pci.resources); device_set_ivars(dinfo->pci.cfg.dev, dinfo); cardbus_do_cis(cbdev, dinfo->pci.cfg.dev); if (device_probe_and_attach(dinfo->pci.cfg.dev) != 0) { /* when fail, release all resources */ cardbus_release_all_resources(cbdev, dinfo); } else cardattached++; } } if (cardattached > 0) return 0; POWER_DISABLE_SOCKET(brdev, cbdev); return ENOENT; } static int cardbus_detach_card(device_t cbdev, int flags) { int numdevs; device_t *devlist; int tmp; int err = 0; device_get_children(cbdev, &devlist, &numdevs); if (numdevs == 0) { if (!(flags & DETACH_NOWARN)) { DEVPRINTF((cbdev, "detach_card: no card to detach!\n")); POWER_DISABLE_SOCKET(device_get_parent(cbdev), cbdev); } free(devlist, M_TEMP); return ENOENT; } for (tmp = 0; tmp < numdevs; tmp++) { struct cardbus_devinfo *dinfo = device_get_ivars(devlist[tmp]); int status = device_get_state(devlist[tmp]); if (status == DS_ATTACHED || status == DS_BUSY) { if (device_detach(dinfo->pci.cfg.dev) == 0 || flags & DETACH_FORCE) { cardbus_release_all_resources(cbdev, dinfo); device_delete_child(cbdev, devlist[tmp]); } else { err++; } cardbus_freecfg(dinfo); } else { cardbus_release_all_resources(cbdev, dinfo); device_delete_child(cbdev, devlist[tmp]); cardbus_freecfg(dinfo); } } if (err == 0) POWER_DISABLE_SOCKET(device_get_parent(cbdev), cbdev); free(devlist, M_TEMP); return err; } static void cardbus_driver_added(device_t cbdev, driver_t *driver) { /* XXX check if 16-bit or cardbus! */ int numdevs; device_t *devlist; int tmp; device_get_children(cbdev, &devlist, &numdevs); DEVICE_IDENTIFY(driver, cbdev); for (tmp = 0; tmp < numdevs; tmp++) { if (device_get_state(devlist[tmp]) == DS_NOTPRESENT) { struct cardbus_devinfo *dinfo; dinfo = device_get_ivars(devlist[tmp]); cardbus_release_all_resources(cbdev, dinfo); resource_list_init(&dinfo->pci.resources); cardbus_do_cis(cbdev, dinfo->pci.cfg.dev); if (device_probe_and_attach(dinfo->pci.cfg.dev) != 0) { cardbus_release_all_resources(cbdev, dinfo); } } } free(devlist, M_TEMP); } /************************************************************************/ /* PCI-Like config reading (copied from pci.c */ /************************************************************************/ /* read configuration header into pcicfgrect structure */ static void cardbus_read_extcap(device_t cbdev, pcicfgregs *cfg) { #define REG(n, w) PCIB_READ_CONFIG(cbdev, cfg->bus, cfg->slot, cfg->func, n, w) int ptr, nextptr, ptrptr; switch (cfg->hdrtype) { case 0: ptrptr = 0x34; break; case 2: ptrptr = 0x14; break; default: return; /* no extended capabilities support */ } nextptr = REG(ptrptr, 1); /* sanity check? */ /* * Read capability entries. */ while (nextptr != 0) { /* Sanity check */ if (nextptr > 255) { printf("illegal PCI extended capability offset %d\n", nextptr); return; } /* Find the next entry */ ptr = nextptr; nextptr = REG(ptr + 1, 1); /* Process this entry */ switch (REG(ptr, 1)) { case 0x01: /* PCI power management */ if (cfg->pp_cap == 0) { cfg->pp_cap = REG(ptr + PCIR_POWER_CAP, 2); cfg->pp_status = ptr + PCIR_POWER_STATUS; cfg->pp_pmcsr = ptr + PCIR_POWER_PMCSR; if ((nextptr - ptr) > PCIR_POWER_DATA) cfg->pp_data = ptr + PCIR_POWER_DATA; } break; default: break; } } #undef REG } /* extract header type specific config data */ static void cardbus_hdrtypedata(device_t brdev, int b, int s, int f, pcicfgregs *cfg) { #define REG(n, w) PCIB_READ_CONFIG(brdev, b, s, f, n, w) switch (cfg->hdrtype) { case 0: cfg->subvendor = REG(PCIR_SUBVEND_0, 2); cfg->subdevice = REG(PCIR_SUBDEV_0, 2); cfg->nummaps = PCI_MAXMAPS_0; break; case 1: cfg->subvendor = REG(PCIR_SUBVEND_1, 2); cfg->subdevice = REG(PCIR_SUBDEV_1, 2); cfg->nummaps = PCI_MAXMAPS_1; break; case 2: cfg->subvendor = REG(PCIR_SUBVEND_2, 2); cfg->subdevice = REG(PCIR_SUBDEV_2, 2); cfg->nummaps = PCI_MAXMAPS_2; break; } #undef REG } static struct cardbus_devinfo * cardbus_read_device(device_t brdev, int b, int s, int f) { #define REG(n, w) PCIB_READ_CONFIG(brdev, b, s, f, n, w) pcicfgregs *cfg = NULL; struct cardbus_devinfo *devlist_entry = NULL; if (REG(PCIR_DEVVENDOR, 4) != -1) { devlist_entry = malloc(sizeof(struct cardbus_devinfo), M_DEVBUF, M_WAITOK | M_ZERO); if (devlist_entry == NULL) return (NULL); cfg = &devlist_entry->pci.cfg; cfg->bus = b; cfg->slot = s; cfg->func = f; cfg->vendor = REG(PCIR_VENDOR, 2); cfg->device = REG(PCIR_DEVICE, 2); cfg->cmdreg = REG(PCIR_COMMAND, 2); cfg->statreg = REG(PCIR_STATUS, 2); cfg->baseclass = REG(PCIR_CLASS, 1); cfg->subclass = REG(PCIR_SUBCLASS, 1); cfg->progif = REG(PCIR_PROGIF, 1); cfg->revid = REG(PCIR_REVID, 1); cfg->hdrtype = REG(PCIR_HEADERTYPE, 1); cfg->cachelnsz = REG(PCIR_CACHELNSZ, 1); cfg->lattimer = REG(PCIR_LATTIMER, 1); cfg->intpin = REG(PCIR_INTPIN, 1); cfg->intline = REG(PCIR_INTLINE, 1); cfg->mingnt = REG(PCIR_MINGNT, 1); cfg->maxlat = REG(PCIR_MAXLAT, 1); cfg->mfdev = (cfg->hdrtype & PCIM_MFDEV) != 0; cfg->hdrtype &= ~PCIM_MFDEV; cardbus_hdrtypedata(brdev, b, s, f, cfg); if (REG(PCIR_STATUS, 2) & PCIM_STATUS_CAPPRESENT) cardbus_read_extcap(brdev, cfg); devlist_entry->pci.conf.pc_sel.pc_bus = cfg->bus; devlist_entry->pci.conf.pc_sel.pc_dev = cfg->slot; devlist_entry->pci.conf.pc_sel.pc_func = cfg->func; devlist_entry->pci.conf.pc_hdr = cfg->hdrtype; devlist_entry->pci.conf.pc_subvendor = cfg->subvendor; devlist_entry->pci.conf.pc_subdevice = cfg->subdevice; devlist_entry->pci.conf.pc_vendor = cfg->vendor; devlist_entry->pci.conf.pc_device = cfg->device; devlist_entry->pci.conf.pc_class = cfg->baseclass; devlist_entry->pci.conf.pc_subclass = cfg->subclass; devlist_entry->pci.conf.pc_progif = cfg->progif; devlist_entry->pci.conf.pc_revid = cfg->revid; } return (devlist_entry); #undef REG } /* free pcicfgregs structure and all depending data structures */ static int cardbus_freecfg(struct cardbus_devinfo *dinfo) { free(dinfo, M_DEVBUF); return (0); } static void cardbus_print_verbose(struct cardbus_devinfo *dinfo) { #ifndef CARDBUS_DEBUG if (bootverbose) #endif /* CARDBUS_DEBUG */ { pcicfgregs *cfg = &dinfo->pci.cfg; printf("found->\tvendor=0x%04x, dev=0x%04x, revid=0x%02x\n", cfg->vendor, cfg->device, cfg->revid); printf("\tclass=%02x-%02x-%02x, hdrtype=0x%02x, mfdev=%d\n", cfg->baseclass, cfg->subclass, cfg->progif, cfg->hdrtype, cfg->mfdev); #ifdef CARDBUS_DEBUG printf("\tcmdreg=0x%04x, statreg=0x%04x, " "cachelnsz=%d (dwords)\n", cfg->cmdreg, cfg->statreg, cfg->cachelnsz); printf("\tlattimer=0x%02x (%d ns), mingnt=0x%02x (%d ns), " "maxlat=0x%02x (%d ns)\n", cfg->lattimer, cfg->lattimer * 30, cfg->mingnt, cfg->mingnt * 250, cfg->maxlat, cfg->maxlat * 250); #endif /* CARDBUS_DEBUG */ if (cfg->intpin > 0) printf("\tintpin=%c, irq=%d\n", cfg->intpin + 'a' - 1, cfg->intline); } } /************************************************************************/ /* Resources */ /************************************************************************/ static int cardbus_set_resource(device_t cbdev, device_t child, int type, int rid, u_long start, u_long count, struct resource *res) { struct cardbus_devinfo *dinfo; struct resource_list *rl; struct resource_list_entry *rle; if (device_get_parent(child) != cbdev) return ENOENT; dinfo = device_get_ivars(child); rl = &dinfo->pci.resources; rle = resource_list_find(rl, type, rid); if (rle == NULL) { resource_list_add(rl, type, rid, start, start + count - 1, count); if (res != NULL) { rle = resource_list_find(rl, type, rid); rle->res = res; } } else { if (rle->res == NULL) { } else if (rle->res->r_dev == cbdev && (!(rman_get_flags(rle->res) & RF_ACTIVE))) { int f; f = rman_get_flags(rle->res); bus_release_resource(cbdev, type, rid, res); rle->res = bus_alloc_resource(cbdev, type, &rid, start, start + count - 1, count, f); } else { device_printf(cbdev, "set_resource: resource busy\n"); return EBUSY; } rle->start = start; rle->end = start + count - 1; rle->count = count; if (res != NULL) rle->res = res; } if (device_get_parent(child) == cbdev) pci_write_config(child, rid, start, 4); return 0; } static int cardbus_get_resource(device_t cbdev, device_t child, int type, int rid, u_long *startp, u_long *countp) { struct cardbus_devinfo *dinfo; struct resource_list *rl; struct resource_list_entry *rle; if (device_get_parent(child) != cbdev) return ENOENT; dinfo = device_get_ivars(child); rl = &dinfo->pci.resources; rle = resource_list_find(rl, type, rid); if (!rle) return ENOENT; if (startp) *startp = rle->start; if (countp) *countp = rle->count; return 0; } static void cardbus_delete_resource(device_t cbdev, device_t child, int type, int rid) { struct cardbus_devinfo *dinfo; struct resource_list *rl; struct resource_list_entry *rle; if (device_get_parent(child) != cbdev) return; dinfo = device_get_ivars(child); rl = &dinfo->pci.resources; rle = resource_list_find(rl, type, rid); if (rle) { if (rle->res) { if (rle->res->r_dev != cbdev || rman_get_flags(rle->res) & RF_ACTIVE) { device_printf(cbdev, "delete_resource: " "Resource still owned by child, oops. " "(type=%d, rid=%d, addr=%lx)\n", rle->type, rle->rid, rman_get_start(rle->res)); return; } bus_release_resource(cbdev, type, rid, rle->res); } resource_list_delete(rl, type, rid); } if (device_get_parent(child) == cbdev) pci_write_config(child, rid, 0, 4); } static int cardbus_set_resource_method(device_t cbdev, device_t child, int type, int rid, u_long start, u_long count) { int ret; ret = cardbus_set_resource(cbdev, child, type, rid, start, count, NULL); if (ret != 0) return ret; return BUS_SET_RESOURCE(device_get_parent(cbdev), child, type, rid, start, count); } static int cardbus_get_resource_method(device_t cbdev, device_t child, int type, int rid, u_long *startp, u_long *countp) { int ret; ret = cardbus_get_resource(cbdev, child, type, rid, startp, countp); if (ret != 0) return ret; return BUS_GET_RESOURCE(device_get_parent(cbdev), child, type, rid, startp, countp); } static void cardbus_delete_resource_method(device_t cbdev, device_t child, int type, int rid) { cardbus_delete_resource(cbdev, child, type, rid); BUS_DELETE_RESOURCE(device_get_parent(cbdev), child, type, rid); } static void cardbus_release_all_resources(device_t cbdev, struct cardbus_devinfo *dinfo) { struct resource_list_entry *rle; /* Free all allocated resources */ SLIST_FOREACH(rle, &dinfo->pci.resources, link) { if (rle->res) { if (rle->res->r_dev != cbdev) device_printf(cbdev, "release_all_resource: " "Resource still owned by child, oops. " "(type=%d, rid=%d, addr=%lx)\n", rle->type, rle->rid, rman_get_start(rle->res)); BUS_RELEASE_RESOURCE(device_get_parent(cbdev), rle->res->r_dev, rle->type, rle->rid, rle->res); rle->res = NULL; /* * zero out config so the card won't acknowledge * access to the space anymore */ pci_write_config(dinfo->pci.cfg.dev, rle->rid, 0, 4); } } resource_list_free(&dinfo->pci.resources); } static struct resource * cardbus_alloc_resource(device_t cbdev, device_t child, int type, int *rid, u_long start, u_long end, u_long count, u_int flags) { struct cardbus_devinfo *dinfo; struct resource_list_entry *rle = 0; int passthrough = (device_get_parent(child) != cbdev); if (passthrough) { return (BUS_ALLOC_RESOURCE(device_get_parent(cbdev), child, type, rid, start, end, count, flags)); } dinfo = device_get_ivars(child); rle = resource_list_find(&dinfo->pci.resources, type, *rid); if (!rle) return NULL; /* no resource of that type/rid */ if (!rle->res) { device_printf(cbdev, "WARNING: Resource not reserved by bus\n"); return NULL; } else { /* Release the cardbus hold on the resource */ if (rle->res->r_dev != cbdev) return NULL; bus_release_resource(cbdev, type, *rid, rle->res); rle->res = NULL; switch (type) { case SYS_RES_IOPORT: case SYS_RES_MEMORY: if (!(flags & RF_ALIGNMENT_MASK)) flags |= rman_make_alignment_flags(rle->count); break; case SYS_RES_IRQ: flags |= RF_SHAREABLE; break; } /* Allocate the resource to the child */ return resource_list_alloc(&dinfo->pci.resources, cbdev, child, type, rid, rle->start, rle->end, rle->count, flags); } } static int cardbus_release_resource(device_t cbdev, device_t child, int type, int rid, struct resource *r) { struct cardbus_devinfo *dinfo; int passthrough = (device_get_parent(child) != cbdev); struct resource_list_entry *rle = 0; int flags; int ret; if (passthrough) { return BUS_RELEASE_RESOURCE(device_get_parent(cbdev), child, type, rid, r); } dinfo = device_get_ivars(child); /* * According to the PCI 2.2 spec, devices may share an address * decoder between memory mapped ROM access and memory * mapped register access. To be safe, disable ROM access * whenever it is released. */ if (rid == CARDBUS_ROM_REG) { uint32_t rom_reg; rom_reg = pci_read_config(child, rid, 4); rom_reg &= ~CARDBUS_ROM_ENABLE; pci_write_config(child, rid, rom_reg, 4); } rle = resource_list_find(&dinfo->pci.resources, type, rid); if (!rle) { device_printf(cbdev, "Allocated resource not found\n"); return ENOENT; } if (!rle->res) { device_printf(cbdev, "Allocated resource not recorded\n"); return ENOENT; } ret = BUS_RELEASE_RESOURCE(device_get_parent(cbdev), child, type, rid, r); switch (type) { case SYS_RES_IOPORT: case SYS_RES_MEMORY: flags = rman_make_alignment_flags(rle->count); break; case SYS_RES_IRQ: flags = RF_SHAREABLE; break; default: flags = 0; } /* Restore cardbus hold on the resource */ rle->res = bus_alloc_resource(cbdev, type, &rid, rle->start, rle->end, rle->count, flags); if (rle->res == NULL) device_printf(cbdev, "release_resource: " "unable to reacquire resource\n"); return ret; } static int cardbus_setup_intr(device_t cbdev, device_t child, struct resource *irq, int flags, driver_intr_t *intr, void *arg, void **cookiep) { int ret; device_t cdev; struct cardbus_devinfo *dinfo; ret = bus_generic_setup_intr(cbdev, child, irq, flags, intr, arg, cookiep); if (ret != 0) return ret; for (cdev = child; cbdev != device_get_parent(cdev); cdev = device_get_parent(cdev)) /* NOTHING */; dinfo = device_get_ivars(cdev); return 0; } static int cardbus_teardown_intr(device_t cbdev, device_t child, struct resource *irq, void *cookie) { int ret; device_t cdev; struct cardbus_devinfo *dinfo; ret = bus_generic_teardown_intr(cbdev, child, irq, cookie); if (ret != 0) return ret; for (cdev = child; cbdev != device_get_parent(cdev); cdev = device_get_parent(cdev)) /* NOTHING */; dinfo = device_get_ivars(cdev); return (0); } /************************************************************************/ /* Other Bus Methods */ /************************************************************************/ static int cardbus_print_resources(struct resource_list *rl, const char *name, int type, const char *format) { struct resource_list_entry *rle; int printed, retval; printed = 0; retval = 0; /* Yes, this is kinda cheating */ SLIST_FOREACH(rle, rl, link) { if (rle->type == type) { if (printed == 0) retval += printf(" %s ", name); else if (printed > 0) retval += printf(","); printed++; retval += printf(format, rle->start); if (rle->count > 1) { retval += printf("-"); retval += printf(format, rle->start + rle->count - 1); } } } return retval; } static int cardbus_print_child(device_t cbdev, device_t child) { struct cardbus_devinfo *dinfo; struct resource_list *rl; pcicfgregs *cfg; int retval = 0; dinfo = device_get_ivars(child); cfg = &dinfo->pci.cfg; rl = &dinfo->pci.resources; retval += bus_print_child_header(cbdev, child); retval += cardbus_print_resources(rl, "port", SYS_RES_IOPORT, "%#lx"); retval += cardbus_print_resources(rl, "mem", SYS_RES_MEMORY, "%#lx"); retval += cardbus_print_resources(rl, "irq", SYS_RES_IRQ, "%ld"); if (device_get_flags(cbdev)) retval += printf(" flags %#x", device_get_flags(cbdev)); retval += printf(" at device %d.%d", pci_get_slot(child), pci_get_function(child)); retval += bus_print_child_footer(cbdev, child); return (retval); } static void cardbus_probe_nomatch(device_t cbdev, device_t child) { struct cardbus_devinfo *dinfo; pcicfgregs *cfg; dinfo = device_get_ivars(child); cfg = &dinfo->pci.cfg; device_printf(cbdev, ""); printf(" (vendor=0x%04x, dev=0x%04x)", cfg->vendor, cfg->device); printf(" at %d.%d", pci_get_slot(child), pci_get_function(child)); if (cfg->intpin > 0 && cfg->intline != 255) { printf(" irq %d", cfg->intline); } printf("\n"); return; } static int cardbus_read_ivar(device_t cbdev, device_t child, int which, u_long *result) { struct cardbus_devinfo *dinfo; pcicfgregs *cfg; dinfo = device_get_ivars(child); cfg = &dinfo->pci.cfg; switch (which) { case PCI_IVAR_SUBVENDOR: *result = cfg->subvendor; break; case PCI_IVAR_SUBDEVICE: *result = cfg->subdevice; break; case PCI_IVAR_VENDOR: *result = cfg->vendor; break; case PCI_IVAR_DEVICE: *result = cfg->device; break; case PCI_IVAR_DEVID: *result = (cfg->device << 16) | cfg->vendor; break; case PCI_IVAR_CLASS: *result = cfg->baseclass; break; case PCI_IVAR_SUBCLASS: *result = cfg->subclass; break; case PCI_IVAR_PROGIF: *result = cfg->progif; break; case PCI_IVAR_REVID: *result = cfg->revid; break; case PCI_IVAR_INTPIN: *result = cfg->intpin; break; case PCI_IVAR_IRQ: *result = cfg->intline; break; case PCI_IVAR_BUS: *result = cfg->bus; break; case PCI_IVAR_SLOT: *result = cfg->slot; break; case PCI_IVAR_FUNCTION: *result = cfg->func; break; default: return ENOENT; } return 0; } static int cardbus_write_ivar(device_t cbdev, device_t child, int which, uintptr_t value) { struct cardbus_devinfo *dinfo; pcicfgregs *cfg; dinfo = device_get_ivars(child); cfg = &dinfo->pci.cfg; switch (which) { case PCI_IVAR_SUBVENDOR: case PCI_IVAR_SUBDEVICE: case PCI_IVAR_VENDOR: case PCI_IVAR_DEVICE: case PCI_IVAR_DEVID: case PCI_IVAR_CLASS: case PCI_IVAR_SUBCLASS: case PCI_IVAR_PROGIF: case PCI_IVAR_REVID: case PCI_IVAR_INTPIN: case PCI_IVAR_IRQ: case PCI_IVAR_BUS: case PCI_IVAR_SLOT: case PCI_IVAR_FUNCTION: return EINVAL; /* disallow for now */ default: return ENOENT; } return 0; } /************************************************************************/ /* Compatibility with PCI bus (XXX: Do we need this?) */ /************************************************************************/ /* * PCI power manangement */ static int cardbus_set_powerstate_method(device_t cbdev, device_t child, int state) { struct cardbus_devinfo *dinfo = device_get_ivars(child); pcicfgregs *cfg = &dinfo->pci.cfg; u_int16_t status; int result; if (cfg->pp_cap != 0) { status = PCI_READ_CONFIG(cbdev, child, cfg->pp_status, 2) & ~PCIM_PSTAT_DMASK; result = 0; switch (state) { case PCI_POWERSTATE_D0: status |= PCIM_PSTAT_D0; break; case PCI_POWERSTATE_D1: if (cfg->pp_cap & PCIM_PCAP_D1SUPP) { status |= PCIM_PSTAT_D1; } else { result = EOPNOTSUPP; } break; case PCI_POWERSTATE_D2: if (cfg->pp_cap & PCIM_PCAP_D2SUPP) { status |= PCIM_PSTAT_D2; } else { result = EOPNOTSUPP; } break; case PCI_POWERSTATE_D3: status |= PCIM_PSTAT_D3; break; default: result = EINVAL; } if (result == 0) PCI_WRITE_CONFIG(cbdev, child, cfg->pp_status, status, 2); } else { result = ENXIO; } return (result); } static int cardbus_get_powerstate_method(device_t cbdev, device_t child) { struct cardbus_devinfo *dinfo = device_get_ivars(child); pcicfgregs *cfg = &dinfo->pci.cfg; u_int16_t status; int result; if (cfg->pp_cap != 0) { status = PCI_READ_CONFIG(cbdev, child, cfg->pp_status, 2); switch (status & PCIM_PSTAT_DMASK) { case PCIM_PSTAT_D0: result = PCI_POWERSTATE_D0; break; case PCIM_PSTAT_D1: result = PCI_POWERSTATE_D1; break; case PCIM_PSTAT_D2: result = PCI_POWERSTATE_D2; break; case PCIM_PSTAT_D3: result = PCI_POWERSTATE_D3; break; default: result = PCI_POWERSTATE_UNKNOWN; break; } } else { /* No support, device is always at D0 */ result = PCI_POWERSTATE_D0; } return (result); } static u_int32_t cardbus_read_config_method(device_t cbdev, device_t child, int reg, int width) { struct cardbus_devinfo *dinfo = device_get_ivars(child); pcicfgregs *cfg = &dinfo->pci.cfg; return PCIB_READ_CONFIG(device_get_parent(cbdev), cfg->bus, cfg->slot, cfg->func, reg, width); } static void cardbus_write_config_method(device_t cbdev, device_t child, int reg, u_int32_t val, int width) { struct cardbus_devinfo *dinfo = device_get_ivars(child); pcicfgregs *cfg = &dinfo->pci.cfg; PCIB_WRITE_CONFIG(device_get_parent(cbdev), cfg->bus, cfg->slot, cfg->func, reg, val, width); } static __inline void cardbus_set_command_bit(device_t cbdev, device_t child, u_int16_t bit) { u_int16_t command; command = PCI_READ_CONFIG(cbdev, child, PCIR_COMMAND, 2); command |= bit; PCI_WRITE_CONFIG(cbdev, child, PCIR_COMMAND, command, 2); } static __inline void cardbus_clear_command_bit(device_t cbdev, device_t child, u_int16_t bit) { u_int16_t command; command = PCI_READ_CONFIG(cbdev, child, PCIR_COMMAND, 2); command &= ~bit; PCI_WRITE_CONFIG(cbdev, child, PCIR_COMMAND, command, 2); } static void cardbus_enable_busmaster_method(device_t cbdev, device_t child) { cardbus_set_command_bit(cbdev, child, PCIM_CMD_BUSMASTEREN); } static void cardbus_disable_busmaster_method(device_t cbdev, device_t child) { cardbus_clear_command_bit(cbdev, child, PCIM_CMD_BUSMASTEREN); } static void cardbus_enable_io_method(device_t cbdev, device_t child, int space) { switch (space) { case SYS_RES_IOPORT: cardbus_set_command_bit(cbdev, child, PCIM_CMD_PORTEN); break; case SYS_RES_MEMORY: cardbus_set_command_bit(cbdev, child, PCIM_CMD_MEMEN); break; } } static void cardbus_disable_io_method(device_t cbdev, device_t child, int space) { switch (space) { case SYS_RES_IOPORT: cardbus_clear_command_bit(cbdev, child, PCIM_CMD_PORTEN); break; case SYS_RES_MEMORY: cardbus_clear_command_bit(cbdev, child, PCIM_CMD_MEMEN); break; } } static device_method_t cardbus_methods[] = { /* Device interface */ DEVMETHOD(device_probe, cardbus_probe), DEVMETHOD(device_attach, cardbus_attach), DEVMETHOD(device_detach, cardbus_detach), DEVMETHOD(device_shutdown, bus_generic_shutdown), DEVMETHOD(device_suspend, cardbus_suspend), DEVMETHOD(device_resume, cardbus_resume), /* Bus interface */ DEVMETHOD(bus_print_child, cardbus_print_child), DEVMETHOD(bus_probe_nomatch, cardbus_probe_nomatch), DEVMETHOD(bus_read_ivar, cardbus_read_ivar), DEVMETHOD(bus_write_ivar, cardbus_write_ivar), DEVMETHOD(bus_driver_added, cardbus_driver_added), DEVMETHOD(bus_alloc_resource, cardbus_alloc_resource), DEVMETHOD(bus_release_resource, cardbus_release_resource), DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), DEVMETHOD(bus_setup_intr, cardbus_setup_intr), DEVMETHOD(bus_teardown_intr, cardbus_teardown_intr), DEVMETHOD(bus_set_resource, cardbus_set_resource_method), DEVMETHOD(bus_get_resource, cardbus_get_resource_method), DEVMETHOD(bus_delete_resource, cardbus_delete_resource_method), /* Card Interface */ DEVMETHOD(card_attach_card, cardbus_attach_card), DEVMETHOD(card_detach_card, cardbus_detach_card), DEVMETHOD(card_cis_read, cardbus_cis_read), DEVMETHOD(card_cis_free, cardbus_cis_free), /* Cardbus/PCI interface */ DEVMETHOD(pci_read_config, cardbus_read_config_method), DEVMETHOD(pci_write_config, cardbus_write_config_method), DEVMETHOD(pci_enable_busmaster, cardbus_enable_busmaster_method), DEVMETHOD(pci_disable_busmaster, cardbus_disable_busmaster_method), DEVMETHOD(pci_enable_io, cardbus_enable_io_method), DEVMETHOD(pci_disable_io, cardbus_disable_io_method), DEVMETHOD(pci_get_powerstate, cardbus_get_powerstate_method), DEVMETHOD(pci_set_powerstate, cardbus_set_powerstate_method), {0,0} }; static driver_t cardbus_driver = { "cardbus", cardbus_methods, 0 /* no softc */ }; static devclass_t cardbus_devclass; DRIVER_MODULE(cardbus, cbb, cardbus_driver, cardbus_devclass, 0, 0); MODULE_VERSION(cardbus, 1); MODULE_DEPEND(cardbus, exca, 1, 1, 1); /* MODULE_DEPEND(cardbus, pccbb, 1, 1, 1); */