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NetBSD/sys/dev/cardbus/cardbus.c

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/* $NetBSD: cardbus.c,v 1.36 2001/11/06 03:11:10 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 <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/syslog.h>
#include <sys/proc.h>
#include <sys/reboot.h> /* for AB_* needed by bootverbose */
#include <machine/bus.h>
#include <dev/cardbus/cardbusvar.h>
#include <dev/cardbus/cardbusdevs.h>
#include <dev/cardbus/cardbus_exrom.h>
#include <dev/pci/pcivar.h> /* XXX */
#include <dev/pci/pcireg.h> /* XXX */
#include <dev/pcmcia/pcmciareg.h>
#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);
if (bootverbose)
printf(" cacheline 0x%x, lattimer 0x%x", sc->sc_cacheline,
sc->sc_lattimer);
printf("\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;
#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);
}
}
bhlc = cardbus_conf_read(cc, cf, tag, CARDBUS_BHLC_REG);
DPRINTF(("%s bhlc 0x%08x -> ", sc->sc_dev.dv_xname, bhlc));
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;
#if rbus
ca.ca_rbus_iot = sc->sc_rbus_iot;
ca.ca_rbus_memt= sc->sc_rbus_memt;
#endif
ca.ca_tag = tag;
ca.ca_bus = sc->sc_bus;
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 (bootverbose) {
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
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