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NetBSD/sys/dev/sbus/stp4020.c

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/* $NetBSD: stp4020.c,v 1.41 2004/08/11 00:59:40 mycroft Exp $ */
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Paul Kranenburg.
*
* 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 the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
/*
* STP4020: SBus/PCMCIA bridge supporting two Type-3 PCMCIA cards.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: stp4020.c,v 1.41 2004/08/11 00:59:40 mycroft Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/errno.h>
#include <sys/malloc.h>
#include <sys/extent.h>
#include <sys/proc.h>
#include <sys/kernel.h>
#include <sys/kthread.h>
#include <sys/device.h>
#include <dev/pcmcia/pcmciareg.h>
#include <dev/pcmcia/pcmciavar.h>
#include <dev/pcmcia/pcmciachip.h>
#include <machine/bus.h>
#include <machine/intr.h>
#include <dev/sbus/sbusvar.h>
#include <dev/sbus/stp4020reg.h>
#define STP4020_DEBUG 1 /* XXX-temp */
/*
* We use the three available windows per socket in a simple, fixed
* arrangement. Each window maps (at full 1 MB size) one of the pcmcia
* spaces into sbus space.
*/
#define STP_WIN_ATTR 0 /* index of the attribute memory space window */
#define STP_WIN_MEM 1 /* index of the common memory space window */
#define STP_WIN_IO 2 /* index of the io space window */
#if defined(STP4020_DEBUG)
int stp4020_debug = 0;
#define DPRINTF(x) do { if (stp4020_debug) printf x; } while(0)
#else
#define DPRINTF(x)
#endif
/*
* Event queue; events detected in an interrupt context go here
* awaiting attention from our event handling thread.
*/
struct stp4020_event {
SIMPLEQ_ENTRY(stp4020_event) se_q;
int se_type;
int se_sock;
};
/* Defined event types */
#define STP4020_EVENT_INSERTION 0
#define STP4020_EVENT_REMOVAL 1
/*
* Per socket data.
*/
struct stp4020_socket {
struct stp4020_softc *sc; /* Back link */
int flags;
#define STP4020_SOCKET_BUSY 0x0001
int sock; /* Socket number (0 or 1) */
int sbus_intno; /* Do we use first (0) or second (1)
interrupt? */
int int_enable; /* ICR0 value for interrupt enabled */
int int_disable; /* ICR0 value for interrupt disabled */
bus_space_tag_t tag; /* socket control io */
bus_space_handle_t regs; /* space */
bus_space_tag_t pcmciat; /* io space for pcmcia */
struct device *pcmcia; /* Associated PCMCIA device */
int (*intrhandler) /* Card driver interrupt handler */
__P((void *));
void *intrarg; /* Card interrupt handler argument */
void *softint; /* cookie for the softintr */
struct {
bus_space_handle_t winaddr;/* this window's address */
} windows[STP4020_NWIN];
};
struct stp4020_softc {
struct device sc_dev; /* Base device */
struct sbusdev sc_sd; /* SBus device */
pcmcia_chipset_tag_t sc_pct; /* Chipset methods */
struct proc *event_thread; /* event handling thread */
SIMPLEQ_HEAD(, stp4020_event) events; /* Pending events for thread */
struct stp4020_socket sc_socks[STP4020_NSOCK];
};
static int stp4020print __P((void *, const char *));
static int stp4020match __P((struct device *, struct cfdata *, void *));
static void stp4020attach __P((struct device *, struct device *, void *));
static int stp4020_intr __P((void *));
static void stp4020_map_window(struct stp4020_socket *h, int win, int speed);
static void stp4020_calc_speed(int bus_speed, int ns, int *length, int *delay);
static void stp4020_intr_dispatch(void *arg);
CFATTACH_DECL(nell, sizeof(struct stp4020_softc),
stp4020match, stp4020attach, NULL, NULL);
#ifdef STP4020_DEBUG
static void stp4020_dump_regs __P((struct stp4020_socket *));
#endif
static int stp4020_rd_sockctl __P((struct stp4020_socket *, int));
static void stp4020_wr_sockctl __P((struct stp4020_socket *, int, int));
static int stp4020_rd_winctl __P((struct stp4020_socket *, int, int));
static void stp4020_wr_winctl __P((struct stp4020_socket *, int, int, int));
void stp4020_delay __P((unsigned int));
void stp4020_attach_socket __P((struct stp4020_socket *, int));
void stp4020_create_event_thread __P((void *));
void stp4020_event_thread __P((void *));
void stp4020_queue_event __P((struct stp4020_softc *, int, int));
int stp4020_chip_mem_alloc __P((pcmcia_chipset_handle_t, bus_size_t,
struct pcmcia_mem_handle *));
void stp4020_chip_mem_free __P((pcmcia_chipset_handle_t,
struct pcmcia_mem_handle *));
int stp4020_chip_mem_map __P((pcmcia_chipset_handle_t, int, bus_addr_t,
bus_size_t, struct pcmcia_mem_handle *,
bus_size_t *, int *));
void stp4020_chip_mem_unmap __P((pcmcia_chipset_handle_t, int));
int stp4020_chip_io_alloc __P((pcmcia_chipset_handle_t,
bus_addr_t, bus_size_t, bus_size_t,
struct pcmcia_io_handle *));
void stp4020_chip_io_free __P((pcmcia_chipset_handle_t,
struct pcmcia_io_handle *));
int stp4020_chip_io_map __P((pcmcia_chipset_handle_t, int, bus_addr_t,
bus_size_t, struct pcmcia_io_handle *, int *));
void stp4020_chip_io_unmap __P((pcmcia_chipset_handle_t, int));
void stp4020_chip_socket_enable __P((pcmcia_chipset_handle_t));
void stp4020_chip_socket_disable __P((pcmcia_chipset_handle_t));
void stp4020_chip_socket_settype __P((pcmcia_chipset_handle_t, int));
void *stp4020_chip_intr_establish __P((pcmcia_chipset_handle_t,
struct pcmcia_function *, int,
int (*) __P((void *)), void *));
void stp4020_chip_intr_disestablish __P((pcmcia_chipset_handle_t, void *));
/* Our PCMCIA chipset methods */
static struct pcmcia_chip_functions stp4020_functions = {
stp4020_chip_mem_alloc,
stp4020_chip_mem_free,
stp4020_chip_mem_map,
stp4020_chip_mem_unmap,
stp4020_chip_io_alloc,
stp4020_chip_io_free,
stp4020_chip_io_map,
stp4020_chip_io_unmap,
stp4020_chip_intr_establish,
stp4020_chip_intr_disestablish,
stp4020_chip_socket_enable,
stp4020_chip_socket_disable,
stp4020_chip_socket_settype,
};
static __inline__ int
stp4020_rd_sockctl(h, idx)
struct stp4020_socket *h;
int idx;
{
int o = ((STP4020_SOCKREGS_SIZE * (h->sock)) + idx);
return (bus_space_read_2(h->tag, h->regs, o));
}
static __inline__ void
stp4020_wr_sockctl(h, idx, v)
struct stp4020_socket *h;
int idx;
int v;
{
int o = (STP4020_SOCKREGS_SIZE * (h->sock)) + idx;
bus_space_write_2(h->tag, h->regs, o, v);
}
static __inline__ int
stp4020_rd_winctl(h, win, idx)
struct stp4020_socket *h;
int win;
int idx;
{
int o = (STP4020_SOCKREGS_SIZE * (h->sock)) +
(STP4020_WINREGS_SIZE * win) + idx;
return (bus_space_read_2(h->tag, h->regs, o));
}
static __inline__ void
stp4020_wr_winctl(h, win, idx, v)
struct stp4020_socket *h;
int win;
int idx;
int v;
{
int o = (STP4020_SOCKREGS_SIZE * (h->sock)) +
(STP4020_WINREGS_SIZE * win) + idx;
bus_space_write_2(h->tag, h->regs, o, v);
}
#ifndef SUN4U /* XXX - move to SBUS machdep function? */
static u_int16_t stp4020_read_2(bus_space_tag_t,
bus_space_handle_t,
bus_size_t);
static u_int32_t stp4020_read_4(bus_space_tag_t,
bus_space_handle_t,
bus_size_t);
static u_int64_t stp4020_read_8(bus_space_tag_t,
bus_space_handle_t,
bus_size_t);
static void stp4020_write_2(bus_space_tag_t,
bus_space_handle_t,
bus_size_t,
u_int16_t);
static void stp4020_write_4(bus_space_tag_t,
bus_space_handle_t,
bus_size_t,
u_int32_t);
static void stp4020_write_8(bus_space_tag_t,
bus_space_handle_t,
bus_size_t,
u_int64_t);
static u_int16_t
stp4020_read_2(space, handle, offset)
bus_space_tag_t space;
bus_space_handle_t handle;
bus_size_t offset;
{
return (le16toh(*(volatile u_int16_t *)(handle + offset)));
}
static u_int32_t
stp4020_read_4(space, handle, offset)
bus_space_tag_t space;
bus_space_handle_t handle;
bus_size_t offset;
{
return (le32toh(*(volatile u_int32_t *)(handle + offset)));
}
static u_int64_t
stp4020_read_8(space, handle, offset)
bus_space_tag_t space;
bus_space_handle_t handle;
bus_size_t offset;
{
return (le64toh(*(volatile u_int64_t *)(handle + offset)));
}
static void
stp4020_write_2(space, handle, offset, value)
bus_space_tag_t space;
bus_space_handle_t handle;
bus_size_t offset;
u_int16_t value;
{
(*(volatile u_int16_t *)(handle + offset)) = htole16(value);
}
static void
stp4020_write_4(space, handle, offset, value)
bus_space_tag_t space;
bus_space_handle_t handle;
bus_size_t offset;
u_int32_t value;
{
(*(volatile u_int32_t *)(handle + offset)) = htole32(value);
}
static void
stp4020_write_8(space, handle, offset, value)
bus_space_tag_t space;
bus_space_handle_t handle;
bus_size_t offset;
u_int64_t value;
{
(*(volatile u_int64_t *)(handle + offset)) = htole64(value);
}
#endif /* SUN4U */
int
stp4020print(aux, busname)
void *aux;
const char *busname;
{
struct pcmciabus_attach_args *paa = aux;
struct stp4020_socket *h = paa->pch;
aprint_normal(" socket %d", h->sock);
return (UNCONF);
}
int
stp4020match(parent, cf, aux)
struct device *parent;
struct cfdata *cf;
void *aux;
{
struct sbus_attach_args *sa = aux;
return (strcmp("SUNW,pcmcia", sa->sa_name) == 0);
}
/*
* Attach all the sub-devices we can find
*/
void
stp4020attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct sbus_attach_args *sa = aux;
struct stp4020_softc *sc = (void *)self;
bus_space_tag_t tag;
int rev;
int i, sbus_intno;
bus_space_handle_t bh;
/* lsb of our config flags decides which interrupt we use */
sbus_intno = sc->sc_dev.dv_cfdata->cf_flags & 1;
/* Transfer bus tags */
#ifdef SUN4U
tag = sa->sa_bustag;
#else
tag = bus_space_tag_alloc(sa->sa_bustag, sc);
if (tag == NULL) {
printf("%s: attach: out of memory\n", self->dv_xname);
return;
}
tag->sparc_read_2 = stp4020_read_2;
tag->sparc_read_4 = stp4020_read_4;
tag->sparc_read_8 = stp4020_read_8;
tag->sparc_write_2 = stp4020_write_2;
tag->sparc_write_4 = stp4020_write_4;
tag->sparc_write_8 = stp4020_write_8;
#endif /* SUN4U */
/* Set up per-socket static initialization */
sc->sc_socks[0].sc = sc->sc_socks[1].sc = sc;
sc->sc_socks[0].tag = sc->sc_socks[1].tag = sa->sa_bustag;
/*
* XXX we rely on "tag" accepting the same handle-domain
* as sa->sa_bustag.
*/
sc->sc_socks[0].pcmciat = sc->sc_socks[1].pcmciat = tag;
sc->sc_socks[0].sbus_intno =
sc->sc_socks[1].sbus_intno = sbus_intno;
if (sa->sa_nreg < 8) {
printf("%s: only %d register sets\n",
self->dv_xname, sa->sa_nreg);
return;
}
if (sa->sa_nintr != 2) {
printf("%s: expect 2 interrupt Sbus levels; got %d\n",
self->dv_xname, sa->sa_nintr);
return;
}
#define STP4020_BANK_PROM 0
#define STP4020_BANK_CTRL 4
for (i = 0; i < 8; i++) {
/*
* STP4020 Register address map:
* bank 0: Forth PROM
* banks 1-3: socket 0, windows 0-2
* bank 4: control registers
* banks 5-7: socket 1, windows 0-2
*/
if (i == STP4020_BANK_PROM)
/* Skip the PROM */
continue;
if (sbus_bus_map(sa->sa_bustag,
sa->sa_reg[i].oa_space,
sa->sa_reg[i].oa_base,
sa->sa_reg[i].oa_size,
0, &bh) != 0) {
printf("%s: attach: cannot map registers\n",
self->dv_xname);
return;
}
if (i == STP4020_BANK_CTRL) {
/*
* Copy tag and handle to both socket structures
* for easy access in control/status IO functions.
*/
sc->sc_socks[0].regs = sc->sc_socks[1].regs = bh;
} else if (i < STP4020_BANK_CTRL) {
/* banks 1-3 */
sc->sc_socks[0].windows[i-1].winaddr = bh;
} else {
/* banks 5-7 */
sc->sc_socks[1].windows[i-5].winaddr = bh;
}
}
sbus_establish(&sc->sc_sd, &sc->sc_dev);
/* We only use one interrupt level. */
if (sa->sa_nintr > sbus_intno) {
bus_intr_establish(sa->sa_bustag,
sa->sa_intr[sbus_intno].oi_pri,
IPL_NONE, stp4020_intr, sc);
}
rev = stp4020_rd_sockctl(&sc->sc_socks[0], STP4020_ISR1_IDX) &
STP4020_ISR1_REV_M;
printf(": rev %x\n", rev);
sc->sc_pct = (pcmcia_chipset_tag_t)&stp4020_functions;
/*
* Arrange that a kernel thread be created to handle
* insert/removal events.
*/
SIMPLEQ_INIT(&sc->events);
kthread_create(stp4020_create_event_thread, sc);
for (i = 0; i < STP4020_NSOCK; i++) {
struct stp4020_socket *h = &sc->sc_socks[i];
h->sock = i;
h->sc = sc;
#ifdef STP4020_DEBUG
if (stp4020_debug)
stp4020_dump_regs(h);
#endif
stp4020_attach_socket(h, sa->sa_frequency);
}
}
void
stp4020_attach_socket(h, speed)
struct stp4020_socket *h;
int speed;
{
struct pcmciabus_attach_args paa;
int v;
/* no interrupt handlers yet */
h->intrhandler = NULL;
h->intrarg = NULL;
h->softint = NULL;
h->int_enable = 0;
h->int_disable = 0;
/* Map all three windows */
stp4020_map_window(h, STP_WIN_ATTR, speed);
stp4020_map_window(h, STP_WIN_MEM, speed);
stp4020_map_window(h, STP_WIN_IO, speed);
/* Configure one pcmcia device per socket */
paa.paa_busname = "pcmcia";
paa.pct = (pcmcia_chipset_tag_t)h->sc->sc_pct;
paa.pch = (pcmcia_chipset_handle_t)h;
paa.iobase = 0;
paa.iosize = STP4020_WINDOW_SIZE;
h->pcmcia = config_found(&h->sc->sc_dev, &paa, stp4020print);
if (h->pcmcia == NULL)
return;
/*
* There's actually a pcmcia bus attached; initialize the slot.
*/
/*
* Clear things up before we enable status change interrupts.
* This seems to not be fully initialized by the PROM.
*/
stp4020_wr_sockctl(h, STP4020_ICR1_IDX, 0);
stp4020_wr_sockctl(h, STP4020_ICR0_IDX, 0);
stp4020_wr_sockctl(h, STP4020_ISR1_IDX, 0x3fff);
stp4020_wr_sockctl(h, STP4020_ISR0_IDX, 0x3fff);
/*
* Enable socket status change interrupts.
* We only use one common interrupt for status change
* and IO, to avoid locking issues.
*/
v = STP4020_ICR0_ALL_STATUS_IE
| (h->sbus_intno ? STP4020_ICR0_SCILVL_SB1
: STP4020_ICR0_SCILVL_SB0);
stp4020_wr_sockctl(h, STP4020_ICR0_IDX, v);
/* Get live status bits from ISR0 and clear pending interrupts */
v = stp4020_rd_sockctl(h, STP4020_ISR0_IDX);
stp4020_wr_sockctl(h, STP4020_ISR0_IDX, v);
if ((v & (STP4020_ISR0_CD1ST|STP4020_ISR0_CD2ST)) == 0)
return;
pcmcia_card_attach(h->pcmcia);
h->flags |= STP4020_SOCKET_BUSY;
}
/*
* Deferred thread creation callback.
*/
void
stp4020_create_event_thread(arg)
void *arg;
{
struct stp4020_softc *sc = arg;
const char *name = sc->sc_dev.dv_xname;
if (kthread_create1(stp4020_event_thread, sc, &sc->event_thread,
"%s", name)) {
panic("%s: unable to create event thread", name);
}
}
/*
* The actual event handling thread.
*/
void
stp4020_event_thread(arg)
void *arg;
{
struct stp4020_softc *sc = arg;
struct stp4020_event *e;
int s;
while (1) {
struct stp4020_socket *h;
int n;
s = splhigh();
if ((e = SIMPLEQ_FIRST(&sc->events)) == NULL) {
splx(s);
(void)tsleep(&sc->events, PWAIT, "pcicev", 0);
continue;
}
SIMPLEQ_REMOVE_HEAD(&sc->events, se_q);
splx(s);
n = e->se_sock;
if (n < 0 || n >= STP4020_NSOCK)
panic("stp4020_event_thread: wayward socket number %d",
n);
h = &sc->sc_socks[n];
switch (e->se_type) {
case STP4020_EVENT_INSERTION:
pcmcia_card_attach(h->pcmcia);
break;
case STP4020_EVENT_REMOVAL:
pcmcia_card_detach(h->pcmcia, DETACH_FORCE);
break;
default:
panic("stp4020_event_thread: unknown event type %d",
e->se_type);
}
free(e, M_TEMP);
}
}
void
stp4020_queue_event(sc, sock, event)
struct stp4020_softc *sc;
int sock, event;
{
struct stp4020_event *e;
int s;
e = malloc(sizeof(*e), M_TEMP, M_NOWAIT);
if (e == NULL)
panic("stp4020_queue_event: can't allocate event");
e->se_type = event;
e->se_sock = sock;
s = splhigh();
SIMPLEQ_INSERT_TAIL(&sc->events, e, se_q);
splx(s);
wakeup(&sc->events);
}
/*
* Softinterrupt called to invoke the real driver interrupt handler.
*/
static void
stp4020_intr_dispatch(arg)
void *arg;
{
struct stp4020_socket *h = arg;
int s;
/* invoke driver handler */
h->intrhandler(h->intrarg);
/* enable SBUS interrupts for pcmcia interrupts again */
s = splhigh();
stp4020_wr_sockctl(h, STP4020_ICR0_IDX, h->int_enable);
splx(s);
}
int
stp4020_intr(arg)
void *arg;
{
struct stp4020_softc *sc = arg;
int i, s, r = 0, cd_change = 0;
/* protect hardware access by splhigh against softint */
s = splhigh();
/*
* Check each socket for pending requests.
*/
for (i = 0 ; i < STP4020_NSOCK; i++) {
struct stp4020_socket *h;
int v;
h = &sc->sc_socks[i];
v = stp4020_rd_sockctl(h, STP4020_ISR0_IDX);
/* Ack all interrupts at once. */
stp4020_wr_sockctl(h, STP4020_ISR0_IDX, v);
#ifdef STP4020_DEBUG
if (stp4020_debug != 0) {
char bits[64];
bitmask_snprintf(v, STP4020_ISR0_IOBITS,
bits, sizeof(bits));
printf("stp4020_statintr: ISR0=%s\n", bits);
}
#endif
if ((v & STP4020_ISR0_CDCHG) != 0) {
/*
* Card status change detect
*/
cd_change = 1;
r = 1;
if ((v & (STP4020_ISR0_CD1ST|STP4020_ISR0_CD2ST)) == (STP4020_ISR0_CD1ST|STP4020_ISR0_CD2ST)){
if ((h->flags & STP4020_SOCKET_BUSY) == 0) {
stp4020_queue_event(sc, i,
STP4020_EVENT_INSERTION);
h->flags |= STP4020_SOCKET_BUSY;
}
}
if ((v & (STP4020_ISR0_CD1ST|STP4020_ISR0_CD2ST)) == 0){
if ((h->flags & STP4020_SOCKET_BUSY) != 0) {
stp4020_queue_event(sc, i,
STP4020_EVENT_REMOVAL);
h->flags &= ~STP4020_SOCKET_BUSY;
}
}
}
if ((v & STP4020_ISR0_IOINT) != 0) {
/* we can not deny this is ours, no matter what the
card driver says. */
r = 1;
/* It's a card interrupt */
if ((h->flags & STP4020_SOCKET_BUSY) == 0) {
printf("stp4020[%d]: spurious interrupt?\n",
h->sock);
continue;
}
/*
* Schedule softint to invoke driver interrupt
* handler
*/
if (h->softint != NULL)
softintr_schedule(h->softint);
/*
* Disable this sbus interrupt, until the soft-int
* handler had a chance to run
*/
stp4020_wr_sockctl(h, STP4020_ICR0_IDX, h->int_disable);
}
/* informational messages */
if ((v & STP4020_ISR0_BVD1CHG) != 0) {
/* ignore if this is caused by insert or removal */
if (!cd_change)
printf("stp4020[%d]: Battery change 1\n", h->sock);
r = 1;
}
if ((v & STP4020_ISR0_BVD2CHG) != 0) {
/* ignore if this is caused by insert or removal */
if (!cd_change)
printf("stp4020[%d]: Battery change 2\n", h->sock);
r = 1;
}
if ((v & STP4020_ISR0_SCINT) != 0) {
DPRINTF(("stp4020[%d]: status change\n", h->sock));
r = 1;
}
if ((v & STP4020_ISR0_RDYCHG) != 0) {
DPRINTF(("stp4020[%d]: Ready/Busy change\n", h->sock));
r = 1;
}
if ((v & STP4020_ISR0_WPCHG) != 0) {
DPRINTF(("stp4020[%d]: Write protect change\n", h->sock));
r = 1;
}
if ((v & STP4020_ISR0_PCTO) != 0) {
DPRINTF(("stp4020[%d]: Card access timeout\n", h->sock));
r = 1;
}
if ((v & ~STP4020_ISR0_LIVE) && r == 0)
printf("stp4020[%d]: unhandled interrupt: 0x%x\n", h->sock, v);
}
splx(s);
return (r);
}
/*
* The function gets the sbus speed and a access time and calculates
* values for the CMDLNG and CMDDLAY registers.
*/
static void
stp4020_calc_speed(int bus_speed, int ns, int *length, int *delay)
{
int result;
if (ns < STP4020_MEM_SPEED_MIN)
ns = STP4020_MEM_SPEED_MIN;
else if (ns > STP4020_MEM_SPEED_MAX)
ns = STP4020_MEM_SPEED_MAX;
result = ns*(bus_speed/1000);
if (result % 1000000)
result = result/1000000 + 1;
else
result /= 1000000;
*length = result;
/* the sbus frequency range is limited, so we can keep this simple */
*delay = ns <= STP4020_MEM_SPEED_MIN? 1 : 2;
}
static void
stp4020_map_window(struct stp4020_socket *h, int win, int speed)
{
int v, length, delay;
/*
* According to the PC Card standard 300ns access timing should be
* used for attribute memory access. Our pcmcia framework does not
* seem to propagate timing information, so we use that
* everywhere.
*/
stp4020_calc_speed(speed, (win==STP_WIN_ATTR)? 300 : 100, &length, &delay);
/*
* Fill in the Address Space Select and Base Address
* fields of this windows control register 0.
*/
v = ((delay << STP4020_WCR0_CMDDLY_S)&STP4020_WCR0_CMDDLY_M)
| ((length << STP4020_WCR0_CMDLNG_S)&STP4020_WCR0_CMDLNG_M);
switch (win) {
case STP_WIN_ATTR:
v |= STP4020_WCR0_ASPSEL_AM;
break;
case STP_WIN_MEM:
v |= STP4020_WCR0_ASPSEL_CM;
break;
case STP_WIN_IO:
v |= STP4020_WCR0_ASPSEL_IO;
break;
}
v |= (STP4020_ADDR2PAGE(0) & STP4020_WCR0_BASE_M);
stp4020_wr_winctl(h, win, STP4020_WCR0_IDX, v);
stp4020_wr_winctl(h, win, STP4020_WCR1_IDX, 1<<STP4020_WCR1_WAITREQ_S);
}
int
stp4020_chip_mem_alloc(pch, size, pcmhp)
pcmcia_chipset_handle_t pch;
bus_size_t size;
struct pcmcia_mem_handle *pcmhp;
{
struct stp4020_socket *h = (struct stp4020_socket *)pch;
/* we can not do much here, defere work to _mem_map */
pcmhp->memt = h->pcmciat;
pcmhp->size = size;
pcmhp->addr = 0;
pcmhp->mhandle = 0;
pcmhp->realsize = size;
return (0);
}
void
stp4020_chip_mem_free(pch, pcmhp)
pcmcia_chipset_handle_t pch;
struct pcmcia_mem_handle *pcmhp;
{
}
int
stp4020_chip_mem_map(pch, kind, card_addr, size, pcmhp, offsetp, windowp)
pcmcia_chipset_handle_t pch;
int kind;
bus_addr_t card_addr;
bus_size_t size;
struct pcmcia_mem_handle *pcmhp;
bus_size_t *offsetp;
int *windowp;
{
struct stp4020_socket *h = (struct stp4020_socket *)pch;
int win = (kind&PCMCIA_MEM_ATTR)? STP_WIN_ATTR : STP_WIN_MEM;
pcmhp->memt = h->pcmciat;
bus_space_subregion(h->pcmciat, h->windows[win].winaddr, card_addr, size, &pcmhp->memh);
#ifdef SUN4U
if ((u_int8_t)pcmhp->memh._asi == ASI_PHYS_NON_CACHED)
pcmhp->memh._asi = ASI_PHYS_NON_CACHED_LITTLE;
else if ((u_int8_t)pcmhp->memh._asi == ASI_PRIMARY)
pcmhp->memh._asi = ASI_PRIMARY_LITTLE;
#endif
pcmhp->size = size;
pcmhp->realsize = STP4020_WINDOW_SIZE - card_addr;
*offsetp = 0;
*windowp = 0;
return (0);
}
void
stp4020_chip_mem_unmap(pch, win)
pcmcia_chipset_handle_t pch;
int win;
{
}
int
stp4020_chip_io_alloc(pch, start, size, align, pcihp)
pcmcia_chipset_handle_t pch;
bus_addr_t start;
bus_size_t size;
bus_size_t align;
struct pcmcia_io_handle *pcihp;
{
struct stp4020_socket *h = (struct stp4020_socket *)pch;
pcihp->iot = h->pcmciat;
pcihp->ioh = h->windows[STP_WIN_IO].winaddr;
return 0;
}
void
stp4020_chip_io_free(pch, pcihp)
pcmcia_chipset_handle_t pch;
struct pcmcia_io_handle *pcihp;
{
}
int
stp4020_chip_io_map(pch, width, offset, size, pcihp, windowp)
pcmcia_chipset_handle_t pch;
int width;
bus_addr_t offset;
bus_size_t size;
struct pcmcia_io_handle *pcihp;
int *windowp;
{
struct stp4020_socket *h = (struct stp4020_socket *)pch;
pcihp->iot = h->pcmciat;
bus_space_subregion(h->pcmciat, h->windows[STP_WIN_IO].winaddr, offset, size, &pcihp->ioh);
#ifdef SUN4U
if ((u_int8_t)pcihp->ioh._asi == ASI_PHYS_NON_CACHED)
pcihp->ioh._asi = ASI_PHYS_NON_CACHED_LITTLE;
else if ((u_int8_t)pcihp->ioh._asi == ASI_PRIMARY)
pcihp->ioh._asi = ASI_PRIMARY_LITTLE;
#endif
*windowp = 0;
return 0;
}
void
stp4020_chip_io_unmap(pch, win)
pcmcia_chipset_handle_t pch;
int win;
{
}
void
stp4020_chip_socket_enable(pch)
pcmcia_chipset_handle_t pch;
{
struct stp4020_socket *h = (struct stp4020_socket *)pch;
int i, v;
/* this bit is mostly stolen from pcic_attach_card */
/* Power down the socket to reset it, clear the card reset pin */
stp4020_wr_sockctl(h, STP4020_ICR1_IDX, 0);
/*
* wait 300ms until power fails (Tpf). Then, wait 100ms since
* we are changing Vcc (Toff).
*/
stp4020_delay((300 + 100) * 1000);
/* Power up the socket */
v = STP4020_ICR1_MSTPWR;
stp4020_wr_sockctl(h, STP4020_ICR1_IDX, v);
/*
* wait 100ms until power raise (Tpr) and 20ms to become
* stable (Tsu(Vcc)).
*/
stp4020_delay((100 + 20) * 1000);
v |= STP4020_ICR1_PCIFOE|STP4020_ICR1_VPP1_VCC;
stp4020_wr_sockctl(h, STP4020_ICR1_IDX, v);
/*
* hold RESET at least 10us.
*/
delay(10);
/* Clear reset flag, set to memory mode */
v = stp4020_rd_sockctl(h, STP4020_ICR0_IDX);
v &= ~(STP4020_ICR0_IOIE | STP4020_ICR0_IOILVL | STP4020_ICR0_IFTYPE |
STP4020_ICR0_SPKREN);
v &= ~STP4020_ICR0_RESET;
stp4020_wr_sockctl(h, STP4020_ICR0_IDX, v);
/* wait 20ms as per pc card standard (r2.01) section 4.3.6 */
stp4020_delay(20000);
/* Wait for the chip to finish initializing (5 seconds max) */
for (i = 10000; i > 0; i--) {
v = stp4020_rd_sockctl(h, STP4020_ISR0_IDX);
if ((v & STP4020_ISR0_RDYST) != 0)
break;
delay(500);
}
if (i <= 0) {
char bits[64];
bitmask_snprintf(stp4020_rd_sockctl(h, STP4020_ISR0_IDX),
STP4020_ISR0_IOBITS, bits, sizeof(bits));
printf("stp4020_chip_socket_enable: not ready: status %s\n",
bits);
return;
}
}
void
stp4020_chip_socket_settype(pch, type)
pcmcia_chipset_handle_t pch;
int type;
{
struct stp4020_socket *h = (struct stp4020_socket *)pch;
int v;
/*
* Check the card type.
* Enable socket I/O interrupts for IO cards.
*/
v = stp4020_rd_sockctl(h, STP4020_ICR0_IDX);
v &= ~(STP4020_ICR0_IOIE | STP4020_ICR0_IOILVL | STP4020_ICR0_IFTYPE |
STP4020_ICR0_SPKREN);
if (type == PCMCIA_IFTYPE_IO) {
v |= STP4020_ICR0_IFTYPE_IO|STP4020_ICR0_IOIE
|STP4020_ICR0_SPKREN;
v |= h->sbus_intno ? STP4020_ICR0_IOILVL_SB1
: STP4020_ICR0_IOILVL_SB0;
h->int_enable = v;
h->int_disable = v & ~STP4020_ICR0_IOIE;
DPRINTF(("%s: configuring card for IO useage\n", h->sc->sc_dev.dv_xname));
} else {
v |= STP4020_ICR0_IFTYPE_MEM;
h->int_enable = h->int_disable = v;
DPRINTF(("%s: configuring card for IO useage\n", h->sc->sc_dev.dv_xname));
DPRINTF(("%s: configuring card for MEM ONLY useage\n", h->sc->sc_dev.dv_xname));
}
stp4020_wr_sockctl(h, STP4020_ICR0_IDX, v);
}
void
stp4020_chip_socket_disable(pch)
pcmcia_chipset_handle_t pch;
{
struct stp4020_socket *h = (struct stp4020_socket *)pch;
int v;
/*
* Disable socket I/O interrupts.
*/
v = stp4020_rd_sockctl(h, STP4020_ICR0_IDX);
v &= ~(STP4020_ICR0_IOIE | STP4020_ICR0_IOILVL | STP4020_ICR0_IFTYPE |
STP4020_ICR0_SPKREN);
stp4020_wr_sockctl(h, STP4020_ICR0_IDX, v);
/* Power down the socket */
stp4020_wr_sockctl(h, STP4020_ICR1_IDX, 0);
/*
* wait 300ms until power fails (Tpf).
*/
stp4020_delay(300 * 1000);
}
void *
stp4020_chip_intr_establish(pch, pf, ipl, handler, arg)
pcmcia_chipset_handle_t pch;
struct pcmcia_function *pf;
int ipl;
int (*handler) __P((void *));
void *arg;
{
struct stp4020_socket *h = (struct stp4020_socket *)pch;
/* only one interrupt handler per slot */
if (h->intrhandler != NULL) return NULL;
h->intrhandler = handler;
h->intrarg = arg;
h->softint = softintr_establish(ipl, stp4020_intr_dispatch, h);
return h->softint;
}
void
stp4020_chip_intr_disestablish(pch, ih)
pcmcia_chipset_handle_t pch;
void *ih;
{
struct stp4020_socket *h = (struct stp4020_socket *)pch;
h->intrhandler = NULL;
h->intrarg = NULL;
if (h->softint) {
softintr_disestablish(h->softint);
h->softint = NULL;
}
}
/*
* Delay and possibly yield CPU.
* XXX - assumes a context
*/
void
stp4020_delay(ms)
unsigned int ms;
{
unsigned int ticks;
/* Convert to ticks */
ticks = (ms * hz ) / 1000000;
if (cold || ticks == 0) {
delay(ms);
return;
}
#ifdef DIAGNOSTIC
if (ticks > 60*hz)
panic("stp4020: preposterous delay: %u", ticks);
#endif
tsleep(&ticks, 0, "stp4020_delay", ticks);
}
#ifdef STP4020_DEBUG
void
stp4020_dump_regs(h)
struct stp4020_socket *h;
{
char bits[64];
/*
* Dump control and status registers.
*/
printf("socket[%d] registers:\n", h->sock);
bitmask_snprintf(stp4020_rd_sockctl(h, STP4020_ICR0_IDX),
STP4020_ICR0_BITS, bits, sizeof(bits));
printf("\tICR0=%s\n", bits);
bitmask_snprintf(stp4020_rd_sockctl(h, STP4020_ICR1_IDX),
STP4020_ICR1_BITS, bits, sizeof(bits));
printf("\tICR1=%s\n", bits);
bitmask_snprintf(stp4020_rd_sockctl(h, STP4020_ISR0_IDX),
STP4020_ISR0_IOBITS, bits, sizeof(bits));
printf("\tISR0=%s\n", bits);
bitmask_snprintf(stp4020_rd_sockctl(h, STP4020_ISR1_IDX),
STP4020_ISR1_BITS, bits, sizeof(bits));
printf("\tISR1=%s\n", bits);
}
#endif /* STP4020_DEBUG */
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