/* $NetBSD: cardbus.c,v 1.33 2001/05/09 12:06:25 augustss 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by HAYAKAWA Koichi. * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * * 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 "opt_cardbus.h" #include #include #include #include #include #include #include #include #include #include #include #include #include /* XXX */ #include /* XXX */ #include #if defined CARDBUS_DEBUG #define STATIC #define DPRINTF(a) printf a #else #define STATIC static #define DPRINTF(a) #endif STATIC void cardbusattach(struct device *, struct device *, void *); int cardbus_attach_card(struct cardbus_softc *); STATIC int cardbusmatch(struct device *, struct cfdata *, void *); static int cardbussubmatch(struct device *, struct cfdata *, void *); 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 *, cardbusreg_t, u_int8_t *, size_t); static void enable_function(struct cardbus_softc *, int, int); static void disable_function(struct cardbus_softc *, int); struct cfattach cardbus_ca = { sizeof(struct cardbus_softc), cardbusmatch, cardbusattach }; #ifndef __NetBSD_Version__ struct cfdriver cardbus_cd = { NULL, "cardbus", DV_DULL }; #endif STATIC int cardbusmatch(struct device *parent, struct cfdata *cf, void *aux) { struct cbslot_attach_args *cba = aux; if (strcmp(cba->cba_busname, cf->cf_driver->cd_name)) { DPRINTF(("cardbusmatch: busname differs %s <=> %s\n", cba->cba_busname, cf->cf_driver->cd_name)); return (0); } return (1); } STATIC void cardbusattach(struct device *parent, struct device *self, void *aux) { struct cardbus_softc *sc = (void *)self; struct cbslot_attach_args *cba = aux; sc->sc_bus = cba->cba_bus; sc->sc_device = 0; sc->sc_intrline = cba->cba_intrline; sc->sc_cacheline = cba->cba_cacheline; sc->sc_lattimer = cba->cba_lattimer; printf(": bus %d device %d", sc->sc_bus, sc->sc_device); printf(" cacheline 0x%x, lattimer 0x%x\n", sc->sc_cacheline, sc->sc_lattimer); 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; #if rbus sc->sc_rbus_iot = cba->cba_rbus_iot; sc->sc_rbus_memt = cba->cba_rbus_memt; #endif sc->sc_funcs = NULL; } static int cardbus_read_tuples(struct cardbus_attach_args *ca, cardbusreg_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; cardbustag_t tag = ca->ca_tag; cardbusreg_t command; bus_space_tag_t bar_tag; bus_space_handle_t bar_memh; bus_size_t bar_size; bus_addr_t bar_addr; cardbusreg_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", sc->sc_dev.dv_xname)); 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", sc->sc_dev.dv_xname)); } else { reg = CARDBUS_BASE0_REG + (cardbus_space - 1) * 4; DPRINTF(("%s: reading CIS data from BAR%d\n", sc->sc_dev.dv_xname, 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, CARDBUS_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 0, &bar_tag, &bar_memh, &bar_addr, &bar_size)) { printf("%s: failed to map memory\n", sc->sc_dev.dv_xname); return (1); } if (cardbus_space == CARDBUS_CIS_ASI_ROM) { cardbusreg_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, CARDBUS_COMMAND_STATUS_REG); cardbus_conf_write(cc, cf, tag, CARDBUS_COMMAND_STATUS_REG, command | CARDBUS_COMMAND_MEM_ENABLE); if (cardbus_read_exrom(ca->ca_memt, bar_memh, &rom_image)) goto out; for (p = SIMPLEQ_FIRST(&rom_image); p != NULL; p = SIMPLEQ_NEXT(p, 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, 256); found++; } break; } while ((p = SIMPLEQ_FIRST(&rom_image)) != NULL) { SIMPLEQ_REMOVE_HEAD(&rom_image, p, 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, CARDBUS_COMMAND_STATUS_REG); cardbus_conf_write(cc, cf, tag, CARDBUS_COMMAND_STATUS_REG, command | CARDBUS_COMMAND_MEM_ENABLE); /* XXX byte order? */ bus_space_read_region_1(ca->ca_memt, bar_memh, cis_ptr, tuples, 256); found++; } command = cardbus_conf_read(cc, cf, tag, CARDBUS_COMMAND_STATUS_REG); cardbus_conf_write(cc, cf, tag, CARDBUS_COMMAND_STATUS_REG, command & ~CARDBUS_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)", sc->sc_dev.dv_xname, cardbus_space); #endif } return (!found); } static void parse_tuple(u_int8_t *tuple, int len, void *data) { #ifdef CARDBUS_DEBUG static const char __func__[] = "parse_tuple"; #endif struct cardbus_cis_info *cis = data; char *p; int i, bar_index; switch (tuple[0]) { case PCMCIA_CISTPL_MANFID: if (tuple[1] != 5) { 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])) { cis->cis1_info[i++] = p; while (*p != '\0' && *p != '\xff') p++; if (*p == '\xff') break; 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; cardbustag_t tag; cardbusreg_t id, class, cis_ptr; cardbusreg_t bhlc; u_int8_t tuple[2048]; int cdstatus; int function, nfunction; struct cardbus_devfunc **previous_next = &(sc->sc_funcs); struct device *csc; int no_work_funcs = 0; cardbus_devfunc_t ct; cc = sc->sc_cc; cf = sc->sc_cf; DPRINTF(("cardbus_attach_card: cb%d start\n", sc->sc_dev.dv_unit)); /* inspect initial voltage */ if ((cdstatus = (*cf->cardbus_ctrl)(cc, CARDBUS_CD)) == 0) { DPRINTF(("cardbusattach: no CardBus card on cb%d\n", sc->sc_dev.dv_unit)); 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, sc->sc_device, function); /* * Wait until power comes up. Maxmum 500 ms. */ { int i; for (i = 0; i < 5; ++i) { id = cardbus_conf_read(cc, cf, tag, CARDBUS_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; } } } if (i == 5) { return (0); } } nfunction = CARDBUS_HDRTYPE_MULTIFN(bhlc) ? 8 : 1; for (function = 0; function < nfunction; function++) { struct cardbus_attach_args ca; tag = cardbus_make_tag(cc, cf, sc->sc_bus, sc->sc_device, function); id = cardbus_conf_read(cc, cf, tag, CARDBUS_ID_REG); class = cardbus_conf_read(cc, cf, tag, CARDBUS_CLASS_REG); cis_ptr = cardbus_conf_read(cc, cf, tag, CARDBUS_CIS_REG); /* Invalid vendor ID value? */ if (CARDBUS_VENDOR(id) == CARDBUS_VENDOR_INVALID) { continue; } DPRINTF(("cardbus_attach_card: " "Vendor 0x%x, Product 0x%x, CIS 0x%x\n", CARDBUS_VENDOR(id), CARDBUS_PRODUCT(id), cis_ptr)); enable_function(sc, cdstatus, function); /* clean up every BAR */ cardbus_conf_write(cc, cf, tag, CARDBUS_BASE0_REG, 0); cardbus_conf_write(cc, cf, tag, CARDBUS_BASE1_REG, 0); cardbus_conf_write(cc, cf, tag, CARDBUS_BASE2_REG, 0); cardbus_conf_write(cc, cf, tag, CARDBUS_BASE3_REG, 0); cardbus_conf_write(cc, cf, tag, CARDBUS_BASE4_REG, 0); cardbus_conf_write(cc, cf, tag, CARDBUS_BASE5_REG, 0); cardbus_conf_write(cc, cf, tag, CARDBUS_ROM_REG, 0); /* set initial latency and cacheline size */ bhlc = cardbus_conf_read(cc, cf, tag, CARDBUS_BHLC_REG); DPRINTF(("%s func%d bhlc 0x%08x -> ", sc->sc_dev.dv_xname, function, bhlc)); bhlc &= ~((CARDBUS_LATTIMER_MASK << CARDBUS_LATTIMER_SHIFT) | (CARDBUS_CACHELINE_MASK << CARDBUS_CACHELINE_SHIFT)); bhlc |= ((sc->sc_cacheline & CARDBUS_CACHELINE_MASK) << CARDBUS_CACHELINE_SHIFT); bhlc |= ((sc->sc_lattimer & CARDBUS_LATTIMER_MASK) << CARDBUS_LATTIMER_SHIFT); cardbus_conf_write(cc, cf, tag, CARDBUS_BHLC_REG, bhlc); bhlc = cardbus_conf_read(cc, cf, tag, CARDBUS_BHLC_REG); DPRINTF(("0x%08x\n", bhlc)); if (CARDBUS_LATTIMER(bhlc) < 0x10) { bhlc &= ~(CARDBUS_LATTIMER_MASK << CARDBUS_LATTIMER_SHIFT); bhlc |= (0x10 << CARDBUS_LATTIMER_SHIFT); cardbus_conf_write(cc, cf, tag, CARDBUS_BHLC_REG, 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_cc = sc->sc_cc; ct->ct_cf = sc->sc_cf; ct->ct_bus = sc->sc_bus; ct->ct_dev = sc->sc_device; ct->ct_func = function; ct->ct_sc = sc; ct->ct_next = NULL; *previous_next = ct; memset(&ca, 0, sizeof(ca)); ca.ca_unit = sc->sc_dev.dv_unit; ca.ca_ct = ct; ca.ca_iot = sc->sc_iot; ca.ca_memt = sc->sc_memt; ca.ca_dmat = sc->sc_dmat; ca.ca_tag = tag; ca.ca_device = sc->sc_device; ca.ca_function = function; ca.ca_id = id; ca.ca_class = class; ca.ca_intrline = sc->sc_intrline; if (cardbus_read_tuples(&ca, cis_ptr, tuple, sizeof(tuple))) { printf("cardbus_attach_card: failed to read CIS\n"); } else { #ifdef CARDBUS_DEBUG decode_tuples(tuple, 2048, print_tuple, NULL); #endif decode_tuples(tuple, 2048, parse_tuple, &ca.ca_cis); } if ((csc = config_found_sm((void *)sc, &ca, cardbusprint, cardbussubmatch)) == NULL) { /* do not match */ disable_function(sc, function); free(ct, M_DEVBUF); *previous_next = NULL; } else { /* found */ previous_next = &(ct->ct_next); ct->ct_device = csc; ++no_work_funcs; } } /* * XXX power down pseudo function 8 (this will power down the card * if no functions were attached). */ disable_function(sc, 8); return (no_work_funcs); } static int cardbussubmatch(struct device *parent, struct cfdata *cf, void *aux) { struct cardbus_attach_args *ca = aux; if (cf->cardbuscf_dev != CARDBUS_UNK_DEV && cf->cardbuscf_dev != ca->ca_unit) { return (0); } if (cf->cardbuscf_function != CARDBUS_UNK_FUNCTION && cf->cardbuscf_function != ca->ca_function) { return (0); } return ((*cf->cf_attach->ca_match)(parent, cf, aux)); } 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); for (i = 0; i < 4; i++) { if (ca->ca_cis.cis1_info[i] == NULL) break; if (i) printf(", "); printf("%s", ca->ca_cis.cis1_info[i]); } if (i) printf(" "); printf("(manufacturer 0x%x, product 0x%x)", ca->ca_cis.manufacturer, ca->ca_cis.product); printf(" %s at %s", devinfo, pnp); } printf(" dev %d function %d", ca->ca_device, 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) { struct cardbus_devfunc *ct, *ct_next, **prev_next; prev_next = &(sc->sc_funcs->ct_next); for (ct = sc->sc_funcs; ct != NULL; ct = ct_next) { struct device *fndev = ct->ct_device; ct_next = ct->ct_next; DPRINTF(("%s: detaching %s\n", sc->sc_dev.dv_xname, fndev->dv_xname)); /* call device detach function */ if (0 != config_detach(fndev, 0)) { printf("%s: cannot detach dev %s, function %d\n", sc->sc_dev.dv_xname, fndev->dv_xname, ct->ct_func); prev_next = &(ct->ct_next); } else { sc->sc_poweron_func &= ~(1 << ct->ct_func); *prev_next = ct->ct_next; free(ct, M_DEVBUF); } } sc->sc_poweron_func = 0; (*sc->sc_cf->cardbus_power)(sc->sc_cc, CARDBUS_VCC_0V | CARDBUS_VPP_0V); } /* * 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, cardbus_intr_handle_t irq, int level, int (*func)(void *), void *arg) { DPRINTF(("- cardbus_intr_establish: irq %d\n", irq)); return ((*cf->cardbus_intr_establish)(cc, irq, level, func, arg)); } /* * 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) { sc->sc_poweron_func &= ~(1 << function); if (sc->sc_poweron_func == 0) { /* 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; cardbusreg_t command; cardbustag_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, sc->sc_device, func); command = cardbus_conf_read(cc, cf, tag, CARDBUS_COMMAND_STATUS_REG); command |= (CARDBUS_COMMAND_MEM_ENABLE | CARDBUS_COMMAND_IO_ENABLE | CARDBUS_COMMAND_MASTER_ENABLE); /* XXX: good guess needed */ cardbus_conf_write(cc, cf, tag, CARDBUS_COMMAND_STATUS_REG, command); cardbus_free_tag(cc, cf, tag); 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, cardbustag_t tag, int capid, int *offset, * cardbusreg_t *value) * * Find the specified PCI capability. */ int cardbus_get_capability(cardbus_chipset_tag_t cc, cardbus_function_tag_t cf, cardbustag_t tag, int capid, int *offset, cardbusreg_t *value) { cardbusreg_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 *tuple, tuple_decode_func func, void *data); 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 (NULL != (tp = decode_tuple(tp, func, data))) { if (tuple + buflen < tp) { break; } } return (1); } static u_int8_t * decode_tuple(u_int8_t *tuple, tuple_decode_func func, void *data) { u_int8_t type; u_int8_t len; type = tuple[0]; len = tuple[1] + 2; (*func)(tuple, len, data); if (type == PCMCIA_CISTPL_END) { return (NULL); } return (tuple + len); } #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