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NetBSD/sys/dev/pcmcia/pcmcia.c

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/* $NetBSD: pcmcia.c,v 1.3 1997/10/19 14:04:29 enami Exp $ */
#define PCMCIADEBUG
/*
* Copyright (c) 1997 Marc Horowitz. 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 Marc Horowitz.
* 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_pcmciaverbose.h"
#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
/* XXX only needed for intr debugging */
#include <vm/vm.h>
#include <dev/pcmcia/pcmciareg.h>
#include <dev/pcmcia/pcmciachip.h>
#include <dev/pcmcia/pcmciavar.h>
#include "locators.h"
#ifdef PCMCIADEBUG
int pcmcia_debug = 0;
#define DPRINTF(arg) if (pcmcia_debug) printf arg
#else
#define DPRINTF(arg)
#endif
#ifdef PCMCIAVERBOSE
int pcmcia_verbose = 1;
#else
int pcmcia_verbose = 0;
#endif
#ifdef __BROKEN_INDIRECT_CONFIG
int pcmcia_match __P((struct device *, void *, void *));
int pcmcia_submatch __P((struct device *, void *, void *));
#else
int pcmcia_match __P((struct device *, struct cfdata *, void *));
int pcmcia_submatch __P((struct device *, struct cfdata *, void *));
#endif
void pcmcia_attach __P((struct device *, struct device *, void *));
int pcmcia_print __P((void *, const char *));
int pcmcia_card_intr __P((void *));
struct cfdriver pcmcia_cd = {
NULL, "pcmcia", DV_DULL
};
struct cfattach pcmcia_ca = {
sizeof(struct pcmcia_softc), pcmcia_match, pcmcia_attach
};
int
pcmcia_ccr_read(pf, ccr)
struct pcmcia_function *pf;
int ccr;
{
return (bus_space_read_1(pf->pf_ccrt, pf->pf_ccrh,
pf->pf_ccr_offset + ccr));
}
void
pcmcia_ccr_write(pf, ccr, val)
struct pcmcia_function *pf;
int ccr;
int val;
{
if ((pf->ccr_mask) & (1 << (ccr / 2))) {
bus_space_write_1(pf->pf_ccrt, pf->pf_ccrh,
pf->pf_ccr_offset + ccr, val);
}
}
int
pcmcia_match(parent, match, aux)
struct device *parent;
#ifdef __BROKEN_INDIRECT_CONFIG
void *match;
#else
struct cfdata *match;
#endif
void *aux;
{
/* if the autoconfiguration got this far, there's a socket here */
return (1);
}
void
pcmcia_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct pcmciabus_attach_args *paa = aux;
struct pcmcia_softc *sc = (struct pcmcia_softc *) self;
printf("\n");
sc->pct = paa->pct;
sc->pch = paa->pch;
sc->iobase = paa->iobase;
sc->iosize = paa->iosize;
sc->ih = NULL;
}
int
pcmcia_card_attach(dev)
struct device *dev;
{
struct pcmcia_softc *sc = (struct pcmcia_softc *) dev;
struct pcmcia_function *pf;
struct pcmcia_attach_args paa;
int attached;
/*
* this is here so that when socket_enable calls gettype, trt happens
*/
sc->card.pf_head.sqh_first = NULL;
pcmcia_chip_socket_enable(sc->pct, sc->pch);
pcmcia_read_cis(sc);
pcmcia_chip_socket_disable(sc->pct, sc->pch);
/*
* bail now if the card has no functions, or if there was an error in
* the cis.
*/
if (sc->card.error)
return (1);
if (sc->card.pf_head.sqh_first == NULL)
return (1);
if (pcmcia_verbose)
pcmcia_print_cis(sc);
attached = 0;
for (pf = sc->card.pf_head.sqh_first; pf != NULL;
pf = pf->pf_list.sqe_next) {
if (pf->cfe_head.sqh_first == NULL)
continue;
pf->sc = sc;
pf->cfe = NULL;
pf->ih_fct = NULL;
pf->ih_arg = NULL;
}
for (pf = sc->card.pf_head.sqh_first; pf != NULL;
pf = pf->pf_list.sqe_next) {
if (pf->cfe_head.sqh_first == NULL)
continue;
paa.manufacturer = sc->card.manufacturer;
paa.product = sc->card.product;
paa.card = &sc->card;
paa.pf = pf;
if (config_found_sm(&sc->dev, &paa, pcmcia_print,
pcmcia_submatch)) {
attached++;
DPRINTF(("%s: function %d CCR at %d "
"offset %lx: %x %x %x %x, %x %x %x %x, %x\n",
sc->dev.dv_xname, pf->number,
pf->pf_ccr_window, pf->pf_ccr_offset,
pcmcia_ccr_read(pf, 0x00),
pcmcia_ccr_read(pf, 0x02), pcmcia_ccr_read(pf, 0x04),
pcmcia_ccr_read(pf, 0x06), pcmcia_ccr_read(pf, 0x0A),
pcmcia_ccr_read(pf, 0x0C), pcmcia_ccr_read(pf, 0x0E),
pcmcia_ccr_read(pf, 0x10), pcmcia_ccr_read(pf, 0x12)));
}
}
return (attached ? 0 : 1);
}
void
pcmcia_card_detach(dev)
struct device *dev;
{
/* struct pcmcia_softc *sc = (struct pcmcia_softc *) dev; */
/* don't do anything yet */
}
int
#ifdef __BROKEN_INDIRECT_CONFIG
pcmcia_submatch(parent, match, aux)
struct device *parent;
void *match, *aux;
{
struct cfdata *cf = match;
#else
pcmcia_submatch(parent, cf, aux)
struct device *parent;
struct cfdata *cf;
void *aux;
{
#endif
struct pcmcia_attach_args *paa = aux;
if (cf->cf_loc[PCMCIACF_FUNCTION] != PCMCIACF_FUNCTION_DEFAULT &&
cf->cf_loc[PCMCIACF_FUNCTION] != paa->pf->number)
return (0);
return ((*cf->cf_attach->ca_match)(parent, cf, aux));
}
int
pcmcia_print(arg, pnp)
void *arg;
const char *pnp;
{
struct pcmcia_attach_args *pa = arg;
struct pcmcia_softc *sc = pa->pf->sc;
struct pcmcia_card *card = &sc->card;
int i;
if (pnp) {
for (i = 0; i < 4; i++) {
if (card->cis1_info[i] == NULL)
break;
if (i)
printf(", ");
printf("%s", card->cis1_info[i]);
}
if (i)
printf(" ");
printf("(manufacturer 0x%x, product 0x%x)", card->manufacturer,
card->product);
}
printf(" function %d", pa->pf->number);
return (UNCONF);
}
int
pcmcia_card_gettype(dev)
struct device *dev;
{
struct pcmcia_softc *sc = (struct pcmcia_softc *) dev;
/*
* set the iftype to memory if this card has no functions (not yet
* probed), or only one function, and that is memory.
*/
if (sc->card.pf_head.sqh_first == NULL ||
(sc->card.pf_head.sqh_first != NULL &&
sc->card.pf_head.sqh_first->pf_list.sqe_next == NULL &&
(sc->card.pf_head.sqh_first->cfe_head.sqh_first->iftype ==
PCMCIA_IFTYPE_MEMORY)))
return (PCMCIA_IFTYPE_MEMORY);
else
return (PCMCIA_IFTYPE_IO);
}
/*
* Initialize a PCMCIA function. May be called as long as the function is
* disabled.
*/
void
pcmcia_function_init(pf, cfe)
struct pcmcia_function *pf;
struct pcmcia_config_entry *cfe;
{
if (pf->pf_flags & PFF_ENABLED)
panic("pcmcia_function_init: function is enabled");
/* Remember which configuration entry we are using. */
pf->cfe = cfe;
}
/* Enable a PCMCIA function */
int
pcmcia_function_enable(pf)
struct pcmcia_function *pf;
{
struct pcmcia_function *tmp;
int reg;
if (pf->cfe == NULL)
panic("pcmcia_function_enable: function not initialized");
if (pf->pf_flags & PFF_ENABLED) {
/*
* Don't do anything if we're already enabled.
*/
return (0);
}
/*
* Increase the reference count on the socket, enabling power, if
* necessary.
*/
if (pf->sc->sc_enabled_count++ == 0)
pcmcia_chip_socket_enable(pf->sc->pct, pf->sc->pch);
/*
* it's possible for different functions' CCRs to be in the same
* underlying page. Check for that.
*/
for (tmp = pf->sc->card.pf_head.sqh_first; tmp != NULL;
tmp = tmp->pf_list.sqe_next) {
if ((tmp->pf_flags & PFF_ENABLED) &&
(pf->ccr_base >= (tmp->ccr_base - tmp->pf_ccr_offset)) &&
((pf->ccr_base + PCMCIA_CCR_SIZE) <=
(tmp->ccr_base - tmp->pf_ccr_offset +
tmp->pf_ccr_realsize))) {
pf->pf_ccrt = tmp->pf_ccrt;
pf->pf_ccrh = tmp->pf_ccrh;
pf->pf_ccr_realsize = tmp->pf_ccr_realsize;
/*
* pf->pf_ccr_offset = (tmp->pf_ccr_offset -
* tmp->ccr_base) + pf->ccr_base;
*/
pf->pf_ccr_offset =
(tmp->pf_ccr_offset + pf->ccr_base) -
tmp->ccr_base;
pf->pf_ccr_window = tmp->pf_ccr_window;
break;
}
}
if (tmp == NULL) {
if (pcmcia_mem_alloc(pf, PCMCIA_CCR_SIZE, &pf->pf_pcmh))
goto bad;
if (pcmcia_mem_map(pf, PCMCIA_MEM_ATTR, pf->ccr_base,
PCMCIA_CCR_SIZE, &pf->pf_pcmh, &pf->pf_ccr_offset,
&pf->pf_ccr_window)) {
pcmcia_mem_free(pf, &pf->pf_pcmh);
goto bad;
}
}
DPRINTF(("%s: function %d CCR at %d offset %lx: "
"%x %x %x %x, %x %x %x %x, %x\n",
pf->sc->dev.dv_xname, pf->number,
pf->pf_ccr_window, pf->pf_ccr_offset,
pcmcia_ccr_read(pf, 0x00),
pcmcia_ccr_read(pf, 0x02), pcmcia_ccr_read(pf, 0x04),
pcmcia_ccr_read(pf, 0x06), pcmcia_ccr_read(pf, 0x0A),
pcmcia_ccr_read(pf, 0x0C), pcmcia_ccr_read(pf, 0x0E),
pcmcia_ccr_read(pf, 0x10), pcmcia_ccr_read(pf, 0x12)));
reg = (pf->cfe->number & PCMCIA_CCR_OPTION_CFINDEX);
reg |= PCMCIA_CCR_OPTION_LEVIREQ;
if (pcmcia_mfc(pf->sc))
reg |= PCMCIA_CCR_OPTION_FUNC_ENABLE;
pcmcia_ccr_write(pf, PCMCIA_CCR_OPTION, reg);
reg = 0;
if ((pf->cfe->flags & PCMCIA_CFE_IO16) == 0)
reg |= PCMCIA_CCR_STATUS_IOIS8;
if (pf->cfe->flags & PCMCIA_CFE_AUDIO)
reg |= PCMCIA_CCR_STATUS_AUDIO;
/* Not really needed, since we start with 0. */
if (pf->cfe->flags & PCMCIA_CFE_POWERDOWN)
reg &= ~PCMCIA_CCR_STATUS_PWRDWN;
pcmcia_ccr_write(pf, PCMCIA_CCR_STATUS, reg);
pcmcia_ccr_write(pf, PCMCIA_CCR_SOCKETCOPY, 0);
pf->pf_flags |= PFF_ENABLED;
return (0);
bad:
/*
* Decrement the reference count, and power down the socket, if
* necessary.
*/
if (pf->sc->sc_enabled_count-- == 1)
pcmcia_chip_socket_disable(pf->sc->pct, pf->sc->pch);
return (1);
}
/* Disable PCMCIA function. */
void
pcmcia_function_disable(pf)
struct pcmcia_function *pf;
{
struct pcmcia_function *tmp;
int reg;
if (pf->cfe == NULL)
panic("pcmcia_function_enable: function not initialized");
if ((pf->pf_flags & PFF_ENABLED) == 0) {
/*
* Don't do anything if we're already disabled.
*/
return;
}
/* Power down the function if the card supports it. */
if (pf->cfe->flags & PCMCIA_CFE_POWERDOWN) {
reg = pcmcia_ccr_read(pf, PCMCIA_CCR_STATUS);
reg |= PCMCIA_CCR_STATUS_PWRDWN;
pcmcia_ccr_write(pf, PCMCIA_CCR_STATUS, reg);
}
/*
* it's possible for different functions' CCRs to be in the same
* underlying page. Check for that. Note we mark us as disabled
* first to avoid matching ourself.
*/
pf->pf_flags &= ~PFF_ENABLED;
for (tmp = pf->sc->card.pf_head.sqh_first; tmp != NULL;
tmp = tmp->pf_list.sqe_next) {
if ((tmp->pf_flags & PFF_ENABLED) &&
(pf->ccr_base >= (tmp->ccr_base - tmp->pf_ccr_offset)) &&
((pf->ccr_base + PCMCIA_CCR_SIZE) <=
(tmp->ccr_base - tmp->pf_ccr_offset + tmp->pf_ccr_realsize)))
break;
}
/* Not used by anyone else; unmap the CCR. */
if (tmp == NULL) {
pcmcia_mem_unmap(pf, pf->pf_ccr_window);
pcmcia_mem_free(pf, &pf->pf_pcmh);
}
/*
* Decrement the reference count, and power down the socket, if
* necessary.
*/
if (--pf->sc->sc_enabled_count == 0)
pcmcia_chip_socket_disable(pf->sc->pct, pf->sc->pch);
}
int
pcmcia_io_map(pf, width, offset, size, pcihp, windowp)
struct pcmcia_function *pf;
int width;
bus_addr_t offset;
bus_size_t size;
struct pcmcia_io_handle *pcihp;
int *windowp;
{
bus_addr_t ioaddr;
int reg;
if (pcmcia_chip_io_map(pf->sc->pct, pf->sc->pch,
width, offset, size, pcihp, windowp))
return (1);
ioaddr = pcihp->addr + offset;
/*
* XXX in the multifunction multi-iospace-per-function case, this
* needs to cooperate with io_alloc to make sure that the spaces
* don't overlap, and that the ccr's are set correctly
*/
if (pcmcia_mfc(pf->sc)) {
pcmcia_ccr_write(pf, PCMCIA_CCR_IOBASE0, ioaddr & 0xff);
pcmcia_ccr_write(pf, PCMCIA_CCR_IOBASE1, (ioaddr >> 8) & 0xff);
pcmcia_ccr_write(pf, PCMCIA_CCR_IOSIZE, size - 1);
reg = pcmcia_ccr_read(pf, PCMCIA_CCR_OPTION);
reg |= PCMCIA_CCR_OPTION_ADDR_DECODE;
pcmcia_ccr_write(pf, PCMCIA_CCR_OPTION, reg);
}
return (0);
}
void *
pcmcia_intr_establish(pf, ipl, ih_fct, ih_arg)
struct pcmcia_function *pf;
int ipl;
int (*ih_fct) __P((void *));
void *ih_arg;
{
void *ret;
/* behave differently if this is a multifunction card */
if (pcmcia_mfc(pf->sc)) {
int s, ihcnt, hiipl, reg;
struct pcmcia_function *pf2;
/* XXX splraise() use needs to go away! */
/*
* mask all the ipl's which are already used by this card,
* and find the highest ipl number (lowest priority)
*/
ihcnt = 0;
s = 0; /* this is only here to keep the compipler
happy */
hiipl = 0; /* this is only here to keep the compipler
happy */
for (pf2 = pf->sc->card.pf_head.sqh_first; pf2 != NULL;
pf2 = pf2->pf_list.sqe_next) {
if (pf2->ih_fct) {
if (ihcnt == 0) {
s = splraise(pf2->ih_ipl);
hiipl = pf2->ih_ipl;
ihcnt++;
} else {
splraise(pf2->ih_ipl);
if (pf2->ih_ipl > hiipl)
hiipl = pf2->ih_ipl;
}
}
}
/* set up the handler for the new function */
pf->ih_fct = ih_fct;
pf->ih_arg = ih_arg;
pf->ih_ipl = ipl;
/*
* establish the real interrupt, changing the ipl if
* necessary
*/
if (ihcnt == 0) {
#ifdef DIAGNOSTIC
if (pf->sc->ih != NULL)
panic("card has intr handler, but no function does");
#endif
pf->sc->ih = pcmcia_chip_intr_establish(pf->sc->pct,
pf->sc->pch, pf, ipl, pcmcia_card_intr, pf->sc);
} else if (ipl > hiipl) {
#ifdef DIAGNOSTIC
if (pf->sc->ih == NULL)
panic("functions have ih, but the card does not");
#endif
pcmcia_chip_intr_disestablish(pf->sc->pct, pf->sc->pch,
pf->sc->ih);
pf->sc->ih = pcmcia_chip_intr_establish(pf->sc->pct,
pf->sc->pch, pf, ipl, pcmcia_card_intr, pf->sc);
}
if (ihcnt)
splx(s);
ret = pf->sc->ih;
if (ret != NULL) {
reg = pcmcia_ccr_read(pf, PCMCIA_CCR_OPTION);
reg |= PCMCIA_CCR_OPTION_IREQ_ENABLE;
pcmcia_ccr_write(pf, PCMCIA_CCR_OPTION, reg);
reg = pcmcia_ccr_read(pf, PCMCIA_CCR_STATUS);
reg |= PCMCIA_CCR_STATUS_INTRACK;
pcmcia_ccr_write(pf, PCMCIA_CCR_STATUS, reg);
}
} else {
ret = pcmcia_chip_intr_establish(pf->sc->pct, pf->sc->pch,
pf, ipl, ih_fct, ih_arg);
}
return (ret);
}
void
pcmcia_intr_disestablish(pf, ih)
struct pcmcia_function *pf;
void *ih;
{
/* behave differently if this is a multifunction card */
if (pcmcia_mfc(pf->sc)) {
int s, ihcnt, hiipl;
struct pcmcia_function *pf2;
/*
* mask all the ipl's which are already used by this card,
* and find the highest ipl number (lowest priority). Skip
* the current function.
*/
ihcnt = 0;
s = 0; /* this is only here to keep the compipler
happy */
hiipl = 0; /* this is only here to keep the compipler
happy */
for (pf2 = pf->sc->card.pf_head.sqh_first; pf2 != NULL;
pf2 = pf2->pf_list.sqe_next) {
if (pf2 == pf)
continue;
if (pf2->ih_fct) {
if (ihcnt == 0) {
s = splraise(pf2->ih_ipl);
hiipl = pf2->ih_ipl;
ihcnt++;
} else {
splraise(pf2->ih_ipl);
if (pf2->ih_ipl > hiipl)
hiipl = pf2->ih_ipl;
}
}
}
/* null out the handler for this function */
pf->ih_fct = NULL;
pf->ih_arg = NULL;
/*
* if the ih being removed is lower priority than the lowest
* priority remaining interrupt, up the priority.
*/
#ifdef DIAGNOSTIC
if (ihcnt == 0) {
panic("can't remove a handler from a card which has none");
} else
#endif
if (ihcnt == 1) {
#ifdef DIAGNOSTIC
if (pf->sc->ih == NULL)
panic("disestablishing last function, but card has no ih");
#endif
pcmcia_chip_intr_disestablish(pf->sc->pct, pf->sc->pch,
pf->sc->ih);
pf->sc->ih = NULL;
} else if (pf->ih_ipl > hiipl) {
#ifdef DIAGNOSTIC
if (pf->sc->ih == NULL)
panic("changing ih ipl, but card has no ih");
#endif
pcmcia_chip_intr_disestablish(pf->sc->pct, pf->sc->pch,
pf->sc->ih);
pf->sc->ih = pcmcia_chip_intr_establish(pf->sc->pct,
pf->sc->pch, pf, hiipl, pcmcia_card_intr, pf->sc);
}
if (ihcnt)
splx(s);
} else {
pcmcia_chip_intr_disestablish(pf->sc->pct, pf->sc->pch, ih);
}
}
int
pcmcia_card_intr(arg)
void *arg;
{
struct pcmcia_softc *sc = arg;
struct pcmcia_function *pf;
int reg, ret, ret2;
ret = 0;
for (pf = sc->card.pf_head.sqh_first; pf != NULL;
pf = pf->pf_list.sqe_next) {
#if 0
printf("%s: intr fct=%d physaddr=%lx cor=%02x csr=%02x pin=%02x",
sc->dev.dv_xname, pf->number,
pmap_extract(pmap_kernel(),
(vm_offset_t) pf->ccrh) + pf->ccr_offset,
bus_space_read_1(pf->pf_ccrt, pf->pf_ccrh,
pf->pf_ccr_offset + PCMCIA_CCR_OPTION),
bus_space_read_1(pf->pf_ccrt, pf->pf_ccrh,
pf->pf_ccr_offset + PCMCIA_CCR_STATUS),
bus_space_read_1(pf->pf_ccrt, pf->pf_ccrh,
pf->pf_ccr_offset + PCMCIA_CCR_PIN));
#endif
if (pf->ih_fct != NULL &&
(pf->ccr_mask & (1 << (PCMCIA_CCR_STATUS / 2)))) {
reg = pcmcia_ccr_read(pf, PCMCIA_CCR_STATUS);
if (reg & PCMCIA_CCR_STATUS_INTR) {
ret2 = (*pf->ih_fct)(pf->ih_arg);
if (ret2 != 0 && ret == 0)
ret = ret2;
reg = pcmcia_ccr_read(pf, PCMCIA_CCR_STATUS);
#if 0
printf("; csr %02x->%02x",
reg, reg & ~PCMCIA_CCR_STATUS_INTR);
#endif
pcmcia_ccr_write(pf, PCMCIA_CCR_STATUS,
reg & ~PCMCIA_CCR_STATUS_INTR);
}
}
#if 0
printf("\n");
#endif
}
return (ret);
}
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