/* $NetBSD: cardbus.c,v 1.108 2011/08/01 11:20:27 drochner Exp $ */ /* * Copyright (c) 1997, 1998, 1999 and 2000 * HAYAKAWA Koichi. 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. * 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 ``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 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. */ #include __KERNEL_RCSID(0, "$NetBSD: cardbus.c,v 1.108 2011/08/01 11:20:27 drochner Exp $"); #include "opt_cardbus.h" #include #include #include #include #include #include #include #include /* for AB_* needed by bootverbose */ #include #include #include #include #include /* XXX */ #include /* XXX */ #include #include "locators.h" #if defined CARDBUS_DEBUG #define STATIC #define DPRINTF(a) printf a #else #define STATIC static #define DPRINTF(a) #endif STATIC void cardbusattach(device_t, device_t, void *); STATIC int cardbusdetach(device_t, int); STATIC int cardbusmatch(device_t, cfdata_t, void *); int cardbus_rescan(device_t, const char *, const int *); void cardbus_childdetached(device_t, device_t); static int cardbusprint(void *, const char *); typedef void (*tuple_decode_func)(u_int8_t*, int, void*); static int decode_tuples(u_int8_t *, int, tuple_decode_func, void*); #ifdef CARDBUS_DEBUG static void print_tuple(u_int8_t*, int, void*); #endif static int cardbus_read_tuples(struct cardbus_attach_args *, pcireg_t, u_int8_t *, size_t); static void enable_function(struct cardbus_softc *, int, int); static void disable_function(struct cardbus_softc *, int); static bool cardbus_child_register(device_t); CFATTACH_DECL3_NEW(cardbus, sizeof(struct cardbus_softc), cardbusmatch, cardbusattach, cardbusdetach, NULL, cardbus_rescan, cardbus_childdetached, DVF_DETACH_SHUTDOWN); #ifndef __NetBSD_Version__ struct cfdriver cardbus_cd = { NULL, "cardbus", DV_DULL }; #endif STATIC int cardbusmatch(device_t parent, cfdata_t cf, void *aux) { return (1); } STATIC void cardbusattach(device_t parent, device_t self, void *aux) { struct cardbus_softc *sc = device_private(self); struct cbslot_attach_args *cba = aux; sc->sc_dev = self; sc->sc_bus = cba->cba_bus; sc->sc_cacheline = cba->cba_cacheline; sc->sc_max_lattimer = MIN(0xf8, cba->cba_max_lattimer); aprint_naive("\n"); aprint_normal(": bus %d", sc->sc_bus); if (bootverbose) aprint_normal(" cacheline 0x%x, lattimer 0x%x", sc->sc_cacheline, sc->sc_max_lattimer); aprint_normal("\n"); sc->sc_iot = cba->cba_iot; /* CardBus I/O space tag */ sc->sc_memt = cba->cba_memt; /* CardBus MEM space tag */ sc->sc_dmat = cba->cba_dmat; /* DMA tag */ sc->sc_cc = cba->cba_cc; sc->sc_cf = cba->cba_cf; sc->sc_rbus_iot = cba->cba_rbus_iot; sc->sc_rbus_memt = cba->cba_rbus_memt; if (!pmf_device_register(self, NULL, NULL)) aprint_error_dev(self, "couldn't establish power handler\n"); } STATIC int cardbusdetach(device_t self, int flags) { int rc; if ((rc = config_detach_children(self, flags)) != 0) return rc; pmf_device_deregister(self); return 0; } static int cardbus_read_tuples(struct cardbus_attach_args *ca, pcireg_t cis_ptr, u_int8_t *tuples, size_t len) { struct cardbus_softc *sc = ca->ca_ct->ct_sc; cardbus_chipset_tag_t cc = ca->ca_ct->ct_cc; cardbus_function_tag_t cf = ca->ca_ct->ct_cf; pcitag_t tag = ca->ca_tag; pcireg_t command; bus_space_tag_t bar_tag; bus_space_handle_t bar_memh; bus_size_t bar_size; bus_addr_t bar_addr; pcireg_t reg; int found = 0; int cardbus_space = cis_ptr & CARDBUS_CIS_ASIMASK; int i, j; memset(tuples, 0, len); cis_ptr = cis_ptr & CARDBUS_CIS_ADDRMASK; switch (cardbus_space) { case CARDBUS_CIS_ASI_TUPLE: DPRINTF(("%s: reading CIS data from configuration space\n", device_xname(sc->sc_dev))); for (i = cis_ptr, j = 0; i < 0xff; i += 4) { u_int32_t e = (*cf->cardbus_conf_read)(cc, tag, i); tuples[j] = 0xff & e; e >>= 8; tuples[j + 1] = 0xff & e; e >>= 8; tuples[j + 2] = 0xff & e; e >>= 8; tuples[j + 3] = 0xff & e; j += 4; } found++; break; case CARDBUS_CIS_ASI_BAR0: case CARDBUS_CIS_ASI_BAR1: case CARDBUS_CIS_ASI_BAR2: case CARDBUS_CIS_ASI_BAR3: case CARDBUS_CIS_ASI_BAR4: case CARDBUS_CIS_ASI_BAR5: case CARDBUS_CIS_ASI_ROM: if (cardbus_space == CARDBUS_CIS_ASI_ROM) { reg = CARDBUS_ROM_REG; DPRINTF(("%s: reading CIS data from ROM\n", device_xname(sc->sc_dev))); } else { reg = CARDBUS_CIS_ASI_BAR(cardbus_space); DPRINTF(("%s: reading CIS data from BAR%d\n", device_xname(sc->sc_dev), cardbus_space - 1)); } /* * XXX zero register so mapreg_map doesn't get confused by old * contents. */ cardbus_conf_write(cc, cf, tag, reg, 0); if (Cardbus_mapreg_map(ca->ca_ct, reg, PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 0, &bar_tag, &bar_memh, &bar_addr, &bar_size)) { aprint_error_dev(sc->sc_dev, "failed to map memory\n"); return (1); } aprint_debug_dev(sc->sc_dev, "mapped %ju bytes at 0x%jx\n", (uintmax_t)bar_size, (uintmax_t)bar_addr); if (cardbus_space == CARDBUS_CIS_ASI_ROM) { pcireg_t exrom; int save; struct cardbus_rom_image_head rom_image; struct cardbus_rom_image *p; save = splhigh(); /* enable rom address decoder */ exrom = cardbus_conf_read(cc, cf, tag, reg); cardbus_conf_write(cc, cf, tag, reg, exrom | 1); command = cardbus_conf_read(cc, cf, tag, PCI_COMMAND_STATUS_REG); cardbus_conf_write(cc, cf, tag, PCI_COMMAND_STATUS_REG, command | PCI_COMMAND_MEM_ENABLE); if (cardbus_read_exrom(bar_tag, bar_memh, &rom_image)) goto out; SIMPLEQ_FOREACH(p, &rom_image, next) { if (p->rom_image == CARDBUS_CIS_ASI_ROM_IMAGE(cis_ptr)) { bus_space_read_region_1(p->romt, p->romh, CARDBUS_CIS_ADDR(cis_ptr), tuples, MIN(p->image_size, len)); found++; break; } } while ((p = SIMPLEQ_FIRST(&rom_image)) != NULL) { SIMPLEQ_REMOVE_HEAD(&rom_image, next); free(p, M_DEVBUF); } out: exrom = cardbus_conf_read(cc, cf, tag, reg); cardbus_conf_write(cc, cf, tag, reg, exrom & ~1); splx(save); } else { command = cardbus_conf_read(cc, cf, tag, PCI_COMMAND_STATUS_REG); cardbus_conf_write(cc, cf, tag, PCI_COMMAND_STATUS_REG, command | PCI_COMMAND_MEM_ENABLE); /* XXX byte order? */ bus_space_read_region_1(bar_tag, bar_memh, cis_ptr, tuples, MIN(bar_size - MIN(bar_size, cis_ptr), len)); found++; } command = cardbus_conf_read(cc, cf, tag, PCI_COMMAND_STATUS_REG); cardbus_conf_write(cc, cf, tag, PCI_COMMAND_STATUS_REG, command & ~PCI_COMMAND_MEM_ENABLE); cardbus_conf_write(cc, cf, tag, reg, 0); Cardbus_mapreg_unmap(ca->ca_ct, reg, bar_tag, bar_memh, bar_size); break; #ifdef DIAGNOSTIC default: panic("%s: bad CIS space (%d)", device_xname(sc->sc_dev), cardbus_space); #endif } return (!found); } static void parse_tuple(u_int8_t *tuple, int len, void *data) { struct cardbus_cis_info *cis = data; char *p; int i, bar_index; switch (tuple[0]) { case PCMCIA_CISTPL_MANFID: if (tuple[1] != 4) { DPRINTF(("%s: wrong length manufacturer id (%d)\n", __func__, tuple[1])); break; } cis->manufacturer = tuple[2] | (tuple[3] << 8); cis->product = tuple[4] | (tuple[5] << 8); break; case PCMCIA_CISTPL_VERS_1: memcpy(cis->cis1_info_buf, tuple + 2, tuple[1]); i = 0; p = cis->cis1_info_buf + 2; while (i < sizeof(cis->cis1_info) / sizeof(cis->cis1_info[0])) { if (p >= cis->cis1_info_buf + tuple[1] || *p == '\xff') break; cis->cis1_info[i++] = p; while (*p != '\0' && *p != '\xff') p++; if (*p == '\0') p++; } break; case PCMCIA_CISTPL_BAR: if (tuple[1] != 6) { DPRINTF(("%s: BAR with short length (%d)\n", __func__, tuple[1])); break; } bar_index = tuple[2] & 7; if (bar_index == 0) { DPRINTF(("%s: invalid ASI in BAR tuple\n", __func__)); break; } bar_index--; cis->bar[bar_index].flags = tuple[2]; cis->bar[bar_index].size = (tuple[4] << 0) | (tuple[5] << 8) | (tuple[6] << 16) | (tuple[7] << 24); break; case PCMCIA_CISTPL_FUNCID: cis->funcid = tuple[2]; break; case PCMCIA_CISTPL_FUNCE: switch (cis->funcid) { case PCMCIA_FUNCTION_SERIAL: if (tuple[1] >= 2 && /* XXX PCMCIA_TPLFE_TYPE_SERIAL_??? */ tuple[2] == 0) { cis->funce.serial.uart_type = tuple[3] & 0x1f; cis->funce.serial.uart_present = 1; } break; case PCMCIA_FUNCTION_NETWORK: if (tuple[1] >= 8 && tuple[2] == PCMCIA_TPLFE_TYPE_LAN_NID) { if (tuple[3] > sizeof(cis->funce.network.netid)) { DPRINTF(("%s: unknown network id type " "(len = %d)\n", __func__, tuple[3])); } else { cis->funce.network.netid_present = 1; memcpy(cis->funce.network.netid, tuple + 4, tuple[3]); } } break; } break; } } /* * int cardbus_attach_card(struct cardbus_softc *sc) * * This function attaches the card on the slot: turns on power, * reads and analyses tuple, sets configuration index. * * This function returns the number of recognised device functions. * If no functions are recognised, return 0. */ int cardbus_attach_card(struct cardbus_softc *sc) { cardbus_chipset_tag_t cc; cardbus_function_tag_t cf; int cdstatus; static int wildcard[CARDBUSCF_NLOCS] = { CARDBUSCF_FUNCTION_DEFAULT }; cc = sc->sc_cc; cf = sc->sc_cf; DPRINTF(("cardbus_attach_card: cb%d start\n", device_unit(sc->sc_dev))); /* inspect initial voltage */ if ((cdstatus = (*cf->cardbus_ctrl)(cc, CARDBUS_CD)) == 0) { DPRINTF(("%s: no CardBus card on cb%d\n", __func__, device_unit(sc->sc_dev))); return (0); } device_pmf_driver_set_child_register(sc->sc_dev, cardbus_child_register); cardbus_rescan(sc->sc_dev, "cardbus", wildcard); return (1); /* XXX */ } int cardbus_rescan(device_t self, const char *ifattr, const int *locators) { struct cardbus_softc *sc = device_private(self); cardbus_chipset_tag_t cc; cardbus_function_tag_t cf; pcitag_t tag; pcireg_t id, class, cis_ptr; pcireg_t bhlc, icr, lattimer; int cdstatus; int function, nfunction; device_t csc; cardbus_devfunc_t ct; cc = sc->sc_cc; cf = sc->sc_cf; /* inspect initial voltage */ if ((cdstatus = (*cf->cardbus_ctrl)(cc, CARDBUS_CD)) == 0) { DPRINTF(("%s: no CardBus card on cb%d\n", __func__, device_unit(sc->sc_dev))); return (0); } /* * XXX use fake function 8 to keep power on during whole * configuration. */ enable_function(sc, cdstatus, 8); function = 0; tag = cardbus_make_tag(cc, cf, sc->sc_bus, function); /* * Wait until power comes up. Maxmum 500 ms. * * XXX What is this for? The bridge driver ought to have waited * XXX already. */ { int i; for (i = 0; i < 5; ++i) { id = cardbus_conf_read(cc, cf, tag, PCI_ID_REG); if (id != 0xffffffff && id != 0) { break; } if (cold) { /* before kernel thread invoked */ delay(100 * 1000); } else { /* thread context */ if (tsleep((void *)sc, PCATCH, "cardbus", hz / 10) != EWOULDBLOCK) { break; } } } aprint_debug_dev(self, "id reg valid in %d iterations\n", i); if (i == 5) { return (EIO); } } bhlc = cardbus_conf_read(cc, cf, tag, PCI_BHLC_REG); DPRINTF(("%s bhlc 0x%08x -> ", device_xname(sc->sc_dev), bhlc)); nfunction = PCI_HDRTYPE_MULTIFN(bhlc) ? 8 : 1; for (function = 0; function < nfunction; function++) { struct cardbus_attach_args ca; int locs[CARDBUSCF_NLOCS]; if (locators[CARDBUSCF_FUNCTION] != CARDBUSCF_FUNCTION_DEFAULT && locators[CARDBUSCF_FUNCTION] != function) continue; if (sc->sc_funcs[function]) continue; tag = cardbus_make_tag(cc, cf, sc->sc_bus, function); id = cardbus_conf_read(cc, cf, tag, PCI_ID_REG); class = cardbus_conf_read(cc, cf, tag, PCI_CLASS_REG); cis_ptr = cardbus_conf_read(cc, cf, tag, CARDBUS_CIS_REG); /* Invalid vendor ID value? */ if (PCI_VENDOR(id) == PCI_VENDOR_INVALID) { continue; } DPRINTF(("cardbus_attach_card: " "Vendor 0x%x, Product 0x%x, CIS 0x%x\n", PCI_VENDOR(id), PCI_PRODUCT(id), cis_ptr)); enable_function(sc, cdstatus, function); /* clean up every BAR */ cardbus_conf_write(cc, cf, tag, PCI_BAR0, 0); cardbus_conf_write(cc, cf, tag, PCI_BAR1, 0); cardbus_conf_write(cc, cf, tag, PCI_BAR2, 0); cardbus_conf_write(cc, cf, tag, PCI_BAR3, 0); cardbus_conf_write(cc, cf, tag, PCI_BAR4, 0); cardbus_conf_write(cc, cf, tag, PCI_BAR5, 0); cardbus_conf_write(cc, cf, tag, CARDBUS_ROM_REG, 0); /* set initial latency and cacheline size */ bhlc = cardbus_conf_read(cc, cf, tag, PCI_BHLC_REG); icr = cardbus_conf_read(cc, cf, tag, PCI_INTERRUPT_REG); DPRINTF(("%s func%d icr 0x%08x bhlc 0x%08x -> ", device_xname(sc->sc_dev), function, icr, bhlc)); bhlc &= ~(PCI_CACHELINE_MASK << PCI_CACHELINE_SHIFT); bhlc |= (sc->sc_cacheline & PCI_CACHELINE_MASK) << PCI_CACHELINE_SHIFT; /* * Set the initial value of the Latency Timer. * * While a PCI device owns the bus, its Latency * Timer counts down bus cycles from its initial * value to 0. Minimum Grant tells for how long * the device wants to own the bus once it gets * access, in units of 250ns. * * On a 33 MHz bus, there are 8 cycles per 250ns. * So I multiply the Minimum Grant by 8 to find * out the initial value of the Latency Timer. * * Avoid setting a Latency Timer less than 0x10, * since the old code did not do that. */ lattimer = MIN(sc->sc_max_lattimer, MAX(0x10, 8 * PCI_MIN_GNT(icr))); if (PCI_LATTIMER(bhlc) < lattimer) { bhlc &= ~(PCI_LATTIMER_MASK << PCI_LATTIMER_SHIFT); bhlc |= (lattimer << PCI_LATTIMER_SHIFT); } cardbus_conf_write(cc, cf, tag, PCI_BHLC_REG, bhlc); bhlc = cardbus_conf_read(cc, cf, tag, PCI_BHLC_REG); DPRINTF(("0x%08x\n", bhlc)); /* * We need to allocate the ct here, since we might * need it when reading the CIS */ if ((ct = malloc(sizeof(struct cardbus_devfunc), M_DEVBUF, M_NOWAIT)) == NULL) { panic("no room for cardbus_tag"); } ct->ct_bhlc = bhlc; ct->ct_cc = sc->sc_cc; ct->ct_cf = sc->sc_cf; ct->ct_bus = sc->sc_bus; ct->ct_func = function; ct->ct_sc = sc; sc->sc_funcs[function] = ct; memset(&ca, 0, sizeof(ca)); ca.ca_ct = ct; ca.ca_iot = sc->sc_iot; ca.ca_memt = sc->sc_memt; ca.ca_dmat = sc->sc_dmat; ca.ca_rbus_iot = sc->sc_rbus_iot; ca.ca_rbus_memt= sc->sc_rbus_memt; ca.ca_tag = tag; ca.ca_bus = sc->sc_bus; ca.ca_function = function; ca.ca_id = id; ca.ca_class = class; if (cis_ptr != 0) { #define TUPLESIZE 2048 u_int8_t *tuple = malloc(TUPLESIZE, M_DEVBUF, M_WAITOK); if (cardbus_read_tuples(&ca, cis_ptr, tuple, TUPLESIZE)) { printf("cardbus_attach_card: " "failed to read CIS\n"); } else { #ifdef CARDBUS_DEBUG decode_tuples(tuple, TUPLESIZE, print_tuple, NULL); #endif decode_tuples(tuple, TUPLESIZE, parse_tuple, &ca.ca_cis); } free(tuple, M_DEVBUF); } locs[CARDBUSCF_FUNCTION] = function; if ((csc = config_found_sm_loc(sc->sc_dev, "cardbus", locs, &ca, cardbusprint, config_stdsubmatch)) == NULL) { /* do not match */ disable_function(sc, function); sc->sc_funcs[function] = NULL; free(ct, M_DEVBUF); } else { /* found */ ct->ct_device = csc; } } /* * XXX power down pseudo function 8 (this will power down the card * if no functions were attached). */ disable_function(sc, 8); return (0); } static int cardbusprint(void *aux, const char *pnp) { struct cardbus_attach_args *ca = aux; char devinfo[256]; int i; if (pnp) { pci_devinfo(ca->ca_id, ca->ca_class, 1, devinfo, sizeof(devinfo)); for (i = 0; i < 4; i++) { if (ca->ca_cis.cis1_info[i] == NULL) break; if (i) aprint_normal(", "); aprint_normal("%s", ca->ca_cis.cis1_info[i]); } aprint_verbose("%s(manufacturer 0x%x, product 0x%x)", i ? " " : "", ca->ca_cis.manufacturer, ca->ca_cis.product); aprint_normal(" %s at %s", devinfo, pnp); } aprint_normal(" function %d", ca->ca_function); return (UNCONF); } /* * void cardbus_detach_card(struct cardbus_softc *sc) * * This function detaches the card on the slot: detach device data * structure and turns off the power. * * This function must not be called under interrupt context. */ void cardbus_detach_card(struct cardbus_softc *sc) { int f; struct cardbus_devfunc *ct; for (f = 0; f < 8; f++) { ct = sc->sc_funcs[f]; if (!ct) continue; DPRINTF(("%s: detaching %s\n", device_xname(sc->sc_dev), device_xname(ct->ct_device))); /* call device detach function */ if (config_detach(ct->ct_device, 0) != 0) { aprint_error_dev(sc->sc_dev, "cannot detach dev %s, function %d\n", device_xname(ct->ct_device), ct->ct_func); } } sc->sc_poweron_func = 0; (*sc->sc_cf->cardbus_power)(sc->sc_cc, CARDBUS_VCC_0V | CARDBUS_VPP_0V); } void cardbus_childdetached(device_t self, device_t child) { struct cardbus_softc *sc = device_private(self); struct cardbus_devfunc *ct; ct = sc->sc_funcs[device_locator(child, CARDBUSCF_FUNCTION)]; KASSERT(ct->ct_device == child); sc->sc_poweron_func &= ~(1 << ct->ct_func); sc->sc_funcs[ct->ct_func] = NULL; free(ct, M_DEVBUF); } void * Cardbus_intr_establish(cardbus_devfunc_t ct, int level, int (*func)(void *), void *arg) { return cardbus_intr_establish(ct->ct_cc, ct->ct_cf, level, func, arg); } /* * void *cardbus_intr_establish(cc, cf, irq, level, func, arg) * Interrupt handler of pccard. * args: * cardbus_chipset_tag_t *cc * int irq: */ void * cardbus_intr_establish(cardbus_chipset_tag_t cc, cardbus_function_tag_t cf, int level, int (*func)(void *), void *arg) { DPRINTF(("- cardbus_intr_establish\n")); return ((*cf->cardbus_intr_establish)(cc, level, func, arg)); } void Cardbus_intr_disestablish(cardbus_devfunc_t ct, void *handler) { cardbus_intr_disestablish(ct->ct_cc, ct->ct_cf, handler); } /* * void cardbus_intr_disestablish(cc, cf, handler) * Interrupt handler of pccard. * args: * cardbus_chipset_tag_t *cc */ void cardbus_intr_disestablish(cardbus_chipset_tag_t cc, cardbus_function_tag_t cf, void *handler) { DPRINTF(("- pccard_intr_disestablish\n")); (*cf->cardbus_intr_disestablish)(cc, handler); } /* * XXX this should be merged with cardbus_function_{enable,disable}, * but we don't have a ct when these functions are called. */ static void enable_function(struct cardbus_softc *sc, int cdstatus, int function) { if (sc->sc_poweron_func == 0) { /* switch to 3V and/or wait for power to stabilize */ if (cdstatus & CARDBUS_3V_CARD) { /* * sc_poweron_func must be substituted before * entering sleep, in order to avoid turn on * power twice. */ sc->sc_poweron_func |= (1 << function); (*sc->sc_cf->cardbus_power)(sc->sc_cc, CARDBUS_VCC_3V); } else { /* No cards other than 3.3V cards. */ return; } (*sc->sc_cf->cardbus_ctrl)(sc->sc_cc, CARDBUS_RESET); } sc->sc_poweron_func |= (1 << function); } static void disable_function(struct cardbus_softc *sc, int function) { bool powerdown; cardbus_devfunc_t ct; device_t dv; int i; sc->sc_poweron_func &= ~(1 << function); if (sc->sc_poweron_func != 0) return; for (i = 0; i < __arraycount(sc->sc_funcs); i++) { if ((ct = sc->sc_funcs[i]) == NULL) continue; dv = ct->ct_device; if (prop_dictionary_get_bool(device_properties(dv), "pmf-powerdown", &powerdown) && !powerdown) return; } /* power-off because no functions are enabled */ (*sc->sc_cf->cardbus_power)(sc->sc_cc, CARDBUS_VCC_0V); } /* * int cardbus_function_enable(struct cardbus_softc *sc, int func) * * This function enables a function on a card. When no power is * applied on the card, power will be applied on it. */ int cardbus_function_enable(struct cardbus_softc *sc, int func) { cardbus_chipset_tag_t cc = sc->sc_cc; cardbus_function_tag_t cf = sc->sc_cf; cardbus_devfunc_t ct; pcireg_t command; pcitag_t tag; DPRINTF(("entering cardbus_function_enable... ")); /* entering critical area */ /* XXX: sc_vold should be used */ enable_function(sc, CARDBUS_3V_CARD, func); /* exiting critical area */ tag = cardbus_make_tag(cc, cf, sc->sc_bus, func); command = cardbus_conf_read(cc, cf, tag, PCI_COMMAND_STATUS_REG); command |= (PCI_COMMAND_MEM_ENABLE | PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MASTER_ENABLE); /* XXX: good guess needed */ cardbus_conf_write(cc, cf, tag, PCI_COMMAND_STATUS_REG, command); if ((ct = sc->sc_funcs[func]) != NULL) Cardbus_conf_write(ct, tag, PCI_BHLC_REG, ct->ct_bhlc); DPRINTF(("%x\n", sc->sc_poweron_func)); return (0); } /* * int cardbus_function_disable(struct cardbus_softc *, int func) * * This function disable a function on a card. When no functions are * enabled, it turns off the power. */ int cardbus_function_disable(struct cardbus_softc *sc, int func) { DPRINTF(("entering cardbus_function_disable... ")); disable_function(sc, func); return (0); } /* * int cardbus_get_capability(cardbus_chipset_tag_t cc, * cardbus_function_tag_t cf, pcitag_t tag, int capid, int *offset, * pcireg_t *value) * * Find the specified PCI capability. */ int cardbus_get_capability(cardbus_chipset_tag_t cc, cardbus_function_tag_t cf, pcitag_t tag, int capid, int *offset, pcireg_t *value) { pcireg_t reg; unsigned int ofs; reg = cardbus_conf_read(cc, cf, tag, PCI_COMMAND_STATUS_REG); if (!(reg & PCI_STATUS_CAPLIST_SUPPORT)) return (0); ofs = PCI_CAPLIST_PTR(cardbus_conf_read(cc, cf, tag, PCI_CAPLISTPTR_REG)); while (ofs != 0) { #ifdef DIAGNOSTIC if ((ofs & 3) || (ofs < 0x40)) panic("cardbus_get_capability"); #endif reg = cardbus_conf_read(cc, cf, tag, ofs); if (PCI_CAPLIST_CAP(reg) == capid) { if (offset) *offset = ofs; if (value) *value = reg; return (1); } ofs = PCI_CAPLIST_NEXT(reg); } return (0); } /* * below this line, there are some functions for decoding tuples. * They should go out from this file. */ static u_int8_t * decode_tuple(u_int8_t *, u_int8_t *, tuple_decode_func, void *); static int decode_tuples(u_int8_t *tuple, int buflen, tuple_decode_func func, void *data) { u_int8_t *tp = tuple; if (PCMCIA_CISTPL_LINKTARGET != *tuple) { DPRINTF(("WRONG TUPLE: 0x%x\n", *tuple)); return (0); } while ((tp = decode_tuple(tp, tuple + buflen, func, data)) != NULL) ; return (1); } static u_int8_t * decode_tuple(u_int8_t *tuple, u_int8_t *end, tuple_decode_func func, void *data) { u_int8_t type; u_int8_t len; type = tuple[0]; switch (type) { case PCMCIA_CISTPL_NULL: case PCMCIA_CISTPL_END: len = 1; break; default: if (tuple + 2 > end) return (NULL); len = tuple[1] + 2; break; } if (tuple + len > end) return (NULL); (*func)(tuple, len, data); if (type == PCMCIA_CISTPL_END || tuple + len == end) return (NULL); return (tuple + len); } /* * XXX: this is another reason why this code should be shared with PCI. */ static int cardbus_get_powerstate_int(cardbus_devfunc_t ct, pcitag_t tag, pcireg_t *state, int offset) { pcireg_t value, now; cardbus_chipset_tag_t cc = ct->ct_cc; cardbus_function_tag_t cf = ct->ct_cf; value = cardbus_conf_read(cc, cf, tag, offset + PCI_PMCSR); now = value & PCI_PMCSR_STATE_MASK; switch (now) { case PCI_PMCSR_STATE_D0: case PCI_PMCSR_STATE_D1: case PCI_PMCSR_STATE_D2: case PCI_PMCSR_STATE_D3: *state = now; return 0; default: return EINVAL; } } int cardbus_get_powerstate(cardbus_devfunc_t ct, pcitag_t tag, pcireg_t *state) { cardbus_chipset_tag_t cc = ct->ct_cc; cardbus_function_tag_t cf = ct->ct_cf; int offset; pcireg_t value; if (!cardbus_get_capability(cc, cf, tag, PCI_CAP_PWRMGMT, &offset, &value)) return EOPNOTSUPP; return cardbus_get_powerstate_int(ct, tag, state, offset); } static int cardbus_set_powerstate_int(cardbus_devfunc_t ct, pcitag_t tag, pcireg_t state, int offset, pcireg_t cap_reg) { cardbus_chipset_tag_t cc = ct->ct_cc; cardbus_function_tag_t cf = ct->ct_cf; pcireg_t value, cap, now; KASSERT((offset & 0x3) == 0); cap = cap_reg >> PCI_PMCR_SHIFT; value = cardbus_conf_read(cc, cf, tag, offset + PCI_PMCSR); now = value & PCI_PMCSR_STATE_MASK; value &= ~PCI_PMCSR_STATE_MASK; if (now == state) return 0; switch (state) { case PCI_PMCSR_STATE_D0: break; case PCI_PMCSR_STATE_D1: if (now == PCI_PMCSR_STATE_D2 || now == PCI_PMCSR_STATE_D3) { printf("invalid transition from %d to D1\n", (int)now); return EINVAL; } if (!(cap & PCI_PMCR_D1SUPP)) { printf("D1 not supported\n"); return EOPNOTSUPP; } break; case PCI_PMCSR_STATE_D2: if (now == PCI_PMCSR_STATE_D3) { printf("invalid transition from %d to D2\n", (int)now); return EINVAL; } if (!(cap & PCI_PMCR_D2SUPP)) { printf("D2 not supported\n"); return EOPNOTSUPP; } break; case PCI_PMCSR_STATE_D3: break; default: return EINVAL; } value |= state; cardbus_conf_write(cc, cf, tag, offset + PCI_PMCSR, value); if (state == PCI_PMCSR_STATE_D3 || now == PCI_PMCSR_STATE_D3) DELAY(10000); else if (state == PCI_PMCSR_STATE_D2 || now == PCI_PMCSR_STATE_D2) DELAY(200); return 0; } int cardbus_set_powerstate(cardbus_devfunc_t ct, pcitag_t tag, pcireg_t state) { cardbus_chipset_tag_t cc = ct->ct_cc; cardbus_function_tag_t cf = ct->ct_cf; int offset; pcireg_t value; if (!cardbus_get_capability(cc, cf, tag, PCI_CAP_PWRMGMT, &offset, &value)) return EOPNOTSUPP; return cardbus_set_powerstate_int(ct, tag, state, offset, value); } #ifdef CARDBUS_DEBUG static const char *tuple_name(int); static const char *tuple_names[] = { "TPL_NULL", "TPL_DEVICE", "Reserved", "Reserved", /* 0-3 */ "CONFIG_CB", "CFTABLE_ENTRY_CB", "Reserved", "BAR", /* 4-7 */ "Reserved", "Reserved", "Reserved", "Reserved", /* 8-B */ "Reserved", "Reserved", "Reserved", "Reserved", /* C-F */ "CHECKSUM", "LONGLINK_A", "LONGLINK_C", "LINKTARGET", /* 10-13 */ "NO_LINK", "VERS_1", "ALTSTR", "DEVICE_A", "JEDEC_C", "JEDEC_A", "CONFIG", "CFTABLE_ENTRY", "DEVICE_OC", "DEVICE_OA", "DEVICE_GEO", "DEVICE_GEO_A", "MANFID", "FUNCID", "FUNCE", "SWIL", /* 20-23 */ "Reserved", "Reserved", "Reserved", "Reserved", /* 24-27 */ "Reserved", "Reserved", "Reserved", "Reserved", /* 28-2B */ "Reserved", "Reserved", "Reserved", "Reserved", /* 2C-2F */ "Reserved", "Reserved", "Reserved", "Reserved", /* 30-33 */ "Reserved", "Reserved", "Reserved", "Reserved", /* 34-37 */ "Reserved", "Reserved", "Reserved", "Reserved", /* 38-3B */ "Reserved", "Reserved", "Reserved", "Reserved", /* 3C-3F */ "VERS_2", "FORMAT", "GEOMETRY", "BYTEORDER", "DATE", "BATTERY", "ORG" }; #define NAME_LEN(x) (sizeof x / sizeof(x[0])) static const char * tuple_name(int type) { if (0 <= type && type < NAME_LEN(tuple_names)) { return (tuple_names[type]); } else if (type == 0xff) { return ("END"); } else { return ("Reserved"); } } static void print_tuple(u_int8_t *tuple, int len, void *data) { int i; printf("tuple: %s len %d\n", tuple_name(tuple[0]), len); for (i = 0; i < len; ++i) { if (i % 16 == 0) { printf(" 0x%2x:", i); } printf(" %x", tuple[i]); if (i % 16 == 15) { printf("\n"); } } if (i % 16 != 0) { printf("\n"); } } #endif void cardbus_conf_capture(cardbus_chipset_tag_t cc, cardbus_function_tag_t cf, pcitag_t tag, struct cardbus_conf_state *pcs) { int off; for (off = 0; off < 16; off++) pcs->reg[off] = cardbus_conf_read(cc, cf, tag, (off * 4)); } void cardbus_conf_restore(cardbus_chipset_tag_t cc, cardbus_function_tag_t cf, pcitag_t tag, struct cardbus_conf_state *pcs) { int off; pcireg_t val; for (off = 15; off >= 0; off--) { val = cardbus_conf_read(cc, cf, tag, (off * 4)); if (val != pcs->reg[off]) cardbus_conf_write(cc, cf,tag, (off * 4), pcs->reg[off]); } } struct cardbus_child_power { struct cardbus_conf_state p_cardbusconf; cardbus_devfunc_t p_ct; pcitag_t p_tag; cardbus_chipset_tag_t p_cc; cardbus_function_tag_t p_cf; pcireg_t p_pm_cap; bool p_has_pm; int p_pm_offset; }; static bool cardbus_child_suspend(device_t dv, const pmf_qual_t *qual) { struct cardbus_child_power *priv = device_pmf_bus_private(dv); cardbus_conf_capture(priv->p_cc, priv->p_cf, priv->p_tag, &priv->p_cardbusconf); if (priv->p_has_pm && cardbus_set_powerstate_int(priv->p_ct, priv->p_tag, PCI_PMCSR_STATE_D3, priv->p_pm_offset, priv->p_pm_cap)) { aprint_error_dev(dv, "unsupported state, continuing.\n"); return false; } Cardbus_function_disable(priv->p_ct); return true; } static bool cardbus_child_resume(device_t dv, const pmf_qual_t *qual) { struct cardbus_child_power *priv = device_pmf_bus_private(dv); Cardbus_function_enable(priv->p_ct); if (priv->p_has_pm && cardbus_set_powerstate_int(priv->p_ct, priv->p_tag, PCI_PMCSR_STATE_D0, priv->p_pm_offset, priv->p_pm_cap)) { aprint_error_dev(dv, "unsupported state, continuing.\n"); return false; } cardbus_conf_restore(priv->p_cc, priv->p_cf, priv->p_tag, &priv->p_cardbusconf); return true; } static void cardbus_child_deregister(device_t dv) { struct cardbus_child_power *priv = device_pmf_bus_private(dv); free(priv, M_DEVBUF); } static bool cardbus_child_register(device_t child) { device_t self = device_parent(child); struct cardbus_softc *sc = device_private(self); struct cardbus_devfunc *ct; struct cardbus_child_power *priv; int off; pcireg_t reg; ct = sc->sc_funcs[device_locator(child, CARDBUSCF_FUNCTION)]; priv = malloc(sizeof(*priv), M_DEVBUF, M_WAITOK); priv->p_ct = ct; priv->p_cc = ct->ct_cc; priv->p_cf = ct->ct_cf; priv->p_tag = cardbus_make_tag(priv->p_cc, priv->p_cf, ct->ct_bus, ct->ct_func); if (cardbus_get_capability(priv->p_cc, priv->p_cf, priv->p_tag, PCI_CAP_PWRMGMT, &off, ®)) { priv->p_has_pm = true; priv->p_pm_offset = off; priv->p_pm_cap = reg; } else { priv->p_has_pm = false; priv->p_pm_offset = -1; } device_pmf_bus_register(child, priv, cardbus_child_suspend, cardbus_child_resume, 0, cardbus_child_deregister); return true; }