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freebsd-dev/sys/pccard/pcic.c
Warner Losh 296596145c The datasheet for the 6710/6722 says that you must use one method to 
detect 3.3V cards for the 6710 and another method for the 6722.  This
latter method is also how the 6729/6730 is supposed to detect 3.3V
cards.  This method works great on my Fujitsu Stylistic 500.  Sadly,
it appears that not all laptop makers are as detail oriented as the
folks that made the Stylistic.  IBM Thinkpad 701C and AST Asentia 810N
both hang hard when the 6729 method is used, but at least the thinkpad
works when the 6710 method is used.  The failure mode appears to be any
access to the memory that we've mapped the CIS in causes the machine to
hang until you eject the card.  The Thinkpad, at least, works with this
change, and it doesn't break my Stylistic.

MFC after: 4 days
2002-01-14 14:10:13 +00:00

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/*
* Intel PCIC or compatible Controller driver
*-------------------------------------------------------------------------
*
* Copyright (c) 2001 M. Warner Losh. All rights reserved.
* Copyright (c) 1995 Andrew McRae. 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. 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.
*
* $FreeBSD$
*/
#include <sys/param.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/sysctl.h>
#include <sys/systm.h>
#include <machine/clock.h>
#include <pccard/i82365.h>
#include <pccard/pcic_pci.h>
#include <pccard/cardinfo.h>
#include <pccard/slot.h>
#include <pccard/pcicvar.h>
/* Get pnp IDs */
#include <isa/isavar.h>
#include <dev/pcic/i82365reg.h>
#include <dev/pccard/pccardvar.h>
#include "card_if.h"
/*
* Prototypes for interrupt handler.
*/
static int pcic_ioctl(struct slot *, int, caddr_t);
static int pcic_power(struct slot *);
static void pcic_mapirq(struct slot *, int);
static timeout_t pcic_reset;
static void pcic_resume(struct slot *);
static void pcic_disable(struct slot *);
static int pcic_memory(struct slot *, int);
static int pcic_io(struct slot *, int);
devclass_t pcic_devclass;
static struct slot_ctrl pcic_cinfo = {
pcic_mapirq,
pcic_memory,
pcic_io,
pcic_reset,
pcic_disable,
pcic_power,
pcic_ioctl,
pcic_resume,
PCIC_MEM_WIN,
PCIC_IO_WIN
};
/* sysctl vars */
SYSCTL_NODE(_hw, OID_AUTO, pcic, CTLFLAG_RD, 0, "PCIC parameters");
int pcic_override_irq = 0;
TUNABLE_INT("machdep.pccard.pcic_irq", &pcic_override_irq);
TUNABLE_INT("hw.pcic.irq", &pcic_override_irq);
SYSCTL_INT(_hw_pcic, OID_AUTO, irq, CTLFLAG_RD,
&pcic_override_irq, 0,
"Override the IRQ configured by the config system for all pcic devices");
int pcic_boot_deactivated = 0;
TUNABLE_INT("hw.pcic.boot_deactivated", &pcic_boot_deactivated);
SYSCTL_INT(_hw_pcic, OID_AUTO, boot_deactivated, CTLFLAG_RD,
&pcic_boot_deactivated, 0,
"Override the automatic powering up of pccards at boot.");
/*
* Read a register from the PCIC.
*/
unsigned char
pcic_getb_io(struct pcic_slot *sp, int reg)
{
bus_space_write_1(sp->bst, sp->bsh, PCIC_INDEX, sp->offset + reg);
return (bus_space_read_1(sp->bst, sp->bsh, PCIC_DATA));
}
/*
* Write a register on the PCIC
*/
void
pcic_putb_io(struct pcic_slot *sp, int reg, unsigned char val)
{
/*
* Many datasheets recommend using outw rather than outb to save
* a microsecond. Maybe we should do this, but we'd likely only
* save 20-30us on card activation.
*/
bus_space_write_1(sp->bst, sp->bsh, PCIC_INDEX, sp->offset + reg);
bus_space_write_1(sp->bst, sp->bsh, PCIC_DATA, val);
}
/*
* Clear bit(s) of a register.
*/
__inline void
pcic_clrb(struct pcic_slot *sp, int reg, unsigned char mask)
{
sp->putb(sp, reg, sp->getb(sp, reg) & ~mask);
}
/*
* Set bit(s) of a register
*/
__inline void
pcic_setb(struct pcic_slot *sp, int reg, unsigned char mask)
{
sp->putb(sp, reg, sp->getb(sp, reg) | mask);
}
/*
* Write a 16 bit value to 2 adjacent PCIC registers
*/
static __inline void
pcic_putw(struct pcic_slot *sp, int reg, unsigned short word)
{
sp->putb(sp, reg, word & 0xFF);
sp->putb(sp, reg + 1, (word >> 8) & 0xff);
}
/*
* pc98 cbus cards introduce a slight wrinkle here. They route the irq7 pin
* from the pcic chip to INT 2 on the cbus. INT 2 is normally mapped to
* irq 6 on the pc98 architecture, so if we get a request for irq 6
* lie to the hardware and say it is 7. All the other usual mappings for
* cbus INT into irq space are the same as the rest of the system.
*/
static __inline int
host_irq_to_pcic(int irq)
{
#ifdef PC98
if (irq == 6)
irq = 7;
#endif
return (irq);
}
/*
* Free up resources allocated so far.
*/
void
pcic_dealloc(device_t dev)
{
struct pcic_softc *sc;
sc = (struct pcic_softc *) device_get_softc(dev);
if (sc->slot_poll)
untimeout(sc->slot_poll, sc, sc->timeout_ch);
if (sc->iores)
bus_release_resource(dev, SYS_RES_IOPORT, sc->iorid,
sc->iores);
if (sc->memres)
bus_release_resource(dev, SYS_RES_MEMORY, sc->memrid,
sc->memres);
if (sc->ih)
bus_teardown_intr(dev, sc->irqres, sc->ih);
if (sc->irqres)
bus_release_resource(dev, SYS_RES_IRQ, sc->irqrid, sc->irqres);
}
/*
* entry point from main code to map/unmap memory context.
*/
static int
pcic_memory(struct slot *slt, int win)
{
struct pcic_slot *sp = slt->cdata;
struct mem_desc *mp = &slt->mem[win];
int reg = win * PCIC_MEMSIZE + PCIC_MEMBASE;
if (win < 0 || win >= slt->ctrl->maxmem) {
printf("Illegal PCIC MEMORY window request %d\n", win);
return (ENXIO);
}
if (mp->flags & MDF_ACTIVE) {
unsigned long sys_addr = (uintptr_t)(void *)mp->start >> 12;
/*
* Write the addresses, card offsets and length.
* The values are all stored as the upper 12 bits of the
* 24 bit address i.e everything is allocated as 4 Kb chunks.
*/
pcic_putw(sp, reg, sys_addr & 0xFFF);
pcic_putw(sp, reg+2, (sys_addr + (mp->size >> 12) - 1) & 0xFFF);
pcic_putw(sp, reg+4, ((mp->card >> 12) - sys_addr) & 0x3FFF);
/*
* Each 16 bit register has some flags in the upper bits.
*/
if (mp->flags & MDF_16BITS)
pcic_setb(sp, reg+1, PCIC_DATA16);
if (mp->flags & MDF_ZEROWS)
pcic_setb(sp, reg+1, PCIC_ZEROWS);
if (mp->flags & MDF_WS0)
pcic_setb(sp, reg+3, PCIC_MW0);
if (mp->flags & MDF_WS1)
pcic_setb(sp, reg+3, PCIC_MW1);
if (mp->flags & MDF_ATTR)
pcic_setb(sp, reg+5, PCIC_REG);
if (mp->flags & MDF_WP)
pcic_setb(sp, reg+5, PCIC_WP);
/*
* Enable the memory window. By experiment, we need a delay.
*/
pcic_setb(sp, PCIC_ADDRWINE, (1<<win) | PCIC_MEMCS16);
DELAY(50);
} else {
pcic_clrb(sp, PCIC_ADDRWINE, 1<<win);
pcic_putw(sp, reg, 0);
pcic_putw(sp, reg+2, 0);
pcic_putw(sp, reg+4, 0);
}
return (0);
}
/*
* pcic_io - map or unmap I/O context
*/
static int
pcic_io(struct slot *slt, int win)
{
int mask, reg;
struct pcic_slot *sp = slt->cdata;
struct io_desc *ip = &slt->io[win];
if (bootverbose) {
printf("pcic: I/O win %d flags %x %x-%x\n", win, ip->flags,
ip->start, ip->start + ip->size - 1);
}
switch (win) {
case 0:
mask = PCIC_IO0_EN;
reg = PCIC_IO0;
break;
case 1:
mask = PCIC_IO1_EN;
reg = PCIC_IO1;
break;
default:
printf("Illegal PCIC I/O window request %d\n", win);
return (ENXIO);
}
if (ip->flags & IODF_ACTIVE) {
unsigned char x, ioctlv;
pcic_putw(sp, reg, ip->start);
pcic_putw(sp, reg+2, ip->start + ip->size - 1);
x = 0;
if (ip->flags & IODF_ZEROWS)
x |= PCIC_IO_0WS;
if (ip->flags & IODF_WS)
x |= PCIC_IO_WS;
if (ip->flags & IODF_CS16)
x |= PCIC_IO_CS16;
if (ip->flags & IODF_16BIT)
x |= PCIC_IO_16BIT;
/*
* Extract the current flags and merge with new flags.
* Flags for window 0 in lower nybble, and in upper nybble
* for window 1.
*/
ioctlv = sp->getb(sp, PCIC_IOCTL);
DELAY(100);
switch (win) {
case 0:
sp->putb(sp, PCIC_IOCTL, x | (ioctlv & 0xf0));
break;
case 1:
sp->putb(sp, PCIC_IOCTL, (x << 4) | (ioctlv & 0xf));
break;
}
DELAY(100);
pcic_setb(sp, PCIC_ADDRWINE, mask);
DELAY(100);
} else {
pcic_clrb(sp, PCIC_ADDRWINE, mask);
DELAY(100);
pcic_putw(sp, reg, 0);
pcic_putw(sp, reg + 2, 0);
}
return (0);
}
static void
pcic_do_mgt_irq(struct pcic_slot *sp, int irq)
{
u_int32_t reg;
if (sp->sc->csc_route == pcic_iw_pci) {
/* Do the PCI side of things: Enable the Card Change int */
reg = CB_SM_CD;
bus_space_write_4(sp->bst, sp->bsh, CB_SOCKET_MASK, reg);
/*
* TI Chips need us to set the following. We tell the
* controller to route things via PCI interrupts. Also
* we clear the interrupt number in the STAT_INT register
* as well. The TI-12xx and newer chips require one or the
* other of these to happen, depending on what is set in the
* diagnostic register. I do both on the theory that other
* chips might need one or the other and that no harm will
* come from it. If there is harm, then I'll make it a bit
* in the tables.
*/
pcic_setb(sp, PCIC_INT_GEN, PCIC_INTR_ENA);
pcic_clrb(sp, PCIC_STAT_INT, PCIC_CSCSELECT);
} else {
/* Management IRQ changes */
/*
* The PCIC_INTR_ENA bit means either "tie the function
* and csc interrupts together" or "Route csc interrupts
* via PCI" or "Reserved". In any case, we want to clear
* it since we're using ISA interrupts.
*/
pcic_clrb(sp, PCIC_INT_GEN, PCIC_INTR_ENA);
irq = host_irq_to_pcic(irq);
sp->putb(sp, PCIC_STAT_INT, (irq << PCIC_SI_IRQ_SHIFT) |
PCIC_CDEN);
}
}
int
pcic_attach(device_t dev)
{
int i;
device_t kid;
struct pcic_softc *sc;
struct slot *slt;
struct pcic_slot *sp;
sc = (struct pcic_softc *) device_get_softc(dev);
callout_handle_init(&sc->timeout_ch);
sp = &sc->slots[0];
for (i = 0; i < PCIC_CARD_SLOTS; i++, sp++) {
if (!sp->slt)
continue;
sp->slt = 0;
kid = device_add_child(dev, NULL, -1);
if (kid == NULL) {
device_printf(dev, "Can't add pccard bus slot %d", i);
return (ENXIO);
}
device_probe_and_attach(kid);
slt = pccard_init_slot(kid, &pcic_cinfo);
if (slt == 0) {
device_printf(dev, "Can't get pccard info slot %d", i);
return (ENXIO);
}
sc->slotmask |= (1 << i);
slt->cdata = sp;
sp->slt = slt;
sp->sc = sc;
}
sp = &sc->slots[0];
for (i = 0; i < PCIC_CARD_SLOTS; i++, sp++) {
if (sp->slt == NULL)
continue;
pcic_do_mgt_irq(sp, sc->irq);
sp->slt->irq = sc->irq;
/* Check for changes */
pcic_setb(sp, PCIC_POWER, PCIC_PCPWRE | PCIC_DISRST);
sp->slt->laststate = sp->slt->state = empty;
if (pcic_boot_deactivated) {
if ((sp->getb(sp, PCIC_STATUS) & PCIC_CD) == PCIC_CD) {
sp->slt->state = inactive;
pccard_event(sp->slt, card_deactivated);
}
} else {
pcic_do_stat_delta(sp);
}
}
return (bus_generic_attach(dev));
}
static int
pcic_sresource(struct slot *slt, caddr_t data)
{
struct pccard_resource *pr;
struct resource *r;
int flags;
int rid = 0;
device_t bridgedev = slt->dev;
struct pcic_slot *sp = slt->cdata;
pr = (struct pccard_resource *)data;
pr->resource_addr = ~0ul;
/*
* If we're using PCI interrupt routing, then force the IRQ to
* use and to heck with what the user requested. If they want
* to be able to request IRQs, they must use ISA interrupt
* routing. If we don't give them an irq, and it is the
* pccardd 0,0 case, then just return (giving the "bad resource"
* return in pr->resource_addr).
*/
if (pr->type == SYS_RES_IRQ) {
if (sp->sc->func_route >= pcic_iw_pci) {
pr->resource_addr = sp->sc->irq;
return (0);
}
if (pr->min == 0 && pr->max == 0)
return (0);
}
/*
* Make sure we grok this type.
*/
switch(pr->type) {
default:
return (EINVAL);
case SYS_RES_MEMORY:
case SYS_RES_IRQ:
case SYS_RES_IOPORT:
break;
}
/*
* Allocate the resource, and align it to the most natural
* size. If we get it, then tell userland what we actually got
* in the range they requested.
*/
flags = rman_make_alignment_flags(pr->size);
r = bus_alloc_resource(bridgedev, pr->type, &rid, pr->min, pr->max,
pr->size, flags);
if (r != NULL) {
pr->resource_addr = (u_long)rman_get_start(r);
bus_release_resource(bridgedev, pr->type, rid, r);
}
return (0);
}
/*
* ioctl calls - Controller specific ioctls
*/
static int
pcic_ioctl(struct slot *slt, int cmd, caddr_t data)
{
struct pcic_slot *sp = slt->cdata;
struct pcic_reg *preg = (struct pcic_reg *) data;
switch(cmd) {
default:
return (ENOTTY);
case PIOCGREG: /* Get pcic register */
preg->value = sp->getb(sp, preg->reg);
break; /* Set pcic register */
case PIOCSREG:
sp->putb(sp, preg->reg, preg->value);
break;
case PIOCSRESOURCE: /* Can I use this resource? */
pcic_sresource(slt, data);
break;
}
return (0);
}
/*
* pcic_cardbus_power
*
* Power the card up, as specified, using the cardbus power
* registers to control power. Microsoft recommends that cardbus
* vendors support powering the card via cardbus registers because
* there is no standard for 3.3V cards. Since at least a few of the
* cardbus bridges have minor issues with power via the ExCA registers,
* go ahead and do it all via cardbus registers.
*
* An expamination of the code will show the relative
* ease that we do Vpp as well.
*
* Too bad it appears to not work.
*/
static int
pcic_cardbus_power(struct pcic_slot *sp, struct slot *slt)
{
uint32_t power;
uint32_t state;
/*
* Preserve the clock stop bit of the socket power register.
*/
power = bus_space_read_4(sp->bst, sp->bsh, CB_SOCKET_POWER);
state = bus_space_read_4(sp->bst, sp->bsh, CB_SOCKET_STATE);
printf("old value 0x%x\n", power);
power &= ~CB_SP_CLKSTOP;
switch(slt->pwr.vpp) {
default:
return (EINVAL);
case 0:
power |= CB_SP_VPP_0V;
break;
case 33:
power |= CB_SP_VPP_3V;
break;
case 50:
power |= CB_SP_VPP_5V;
break;
case 120:
power |= CB_SP_VPP_12V;
break;
}
switch(slt->pwr.vcc) {
default:
return (EINVAL);
case 0:
power |= CB_SP_VCC_0V;
break;
case 33:
power |= CB_SP_VCC_3V;
break;
case 50:
power |= CB_SP_VCC_5V;
break;
case -1:
if (state & CB_SS_5VCARD)
power |= CB_SP_VCC_5V;
else if (state & CB_SS_3VCARD)
power |= CB_SP_VCC_3V;
else if (state & CB_SS_XVCARD)
power |= CB_SP_VCC_XV;
else if (state & CB_SS_YVCARD)
power |= CB_SP_VCC_YV;
break;
}
printf("Setting power reg to 0x%x", power);
bus_space_write_4(sp->bst, sp->bsh, CB_SOCKET_POWER, power);
return (EIO);
}
/*
* pcic_power - Enable the power of the slot according to
* the parameters in the power structure(s).
*/
static int
pcic_power(struct slot *slt)
{
unsigned char c;
unsigned char reg = PCIC_DISRST | PCIC_PCPWRE;
struct pcic_slot *sp = slt->cdata;
struct pcic_slot *sp2;
struct pcic_softc *sc = sp->sc;
/*
* Cardbus power registers are completely different.
*/
if (sc->flags & PCIC_CARDBUS_POWER)
return (pcic_cardbus_power(sp, slt));
/*
* If we're automatically detecting what voltage to use, then we need
* to ask the bridge what type (voltage-wise) the card is.
*/
if (slt->pwr.vcc == -1) {
if (sc->flags & PCIC_DF_POWER) {
/*
* Look at the VS[12]# bits on the card. If VS1 is
* clear then the card needs 3.3V instead of 5.0V.
*/
c = sp->getb(sp, PCIC_CDGC);
if ((c & PCIC_VS1STAT) == 0)
slt->pwr.vcc = 33;
else
slt->pwr.vcc = 50;
}
if (sc->flags & PCIC_PD_POWER) {
/*
* The 6710 does it one way, and the '22 and '29 do it
* another. And it appears that the '32 and '33 yet
* another way (which I don't know). The '22 can also
* do it the same way as a '10 does it, despite what
* the datasheets say. Some laptops with '22 don't
* seem to have the signals wired right for the '29
* method to work, so we always use the '10 method for
* the '22. The laptops that don't work hang solid
* when the pccard memory is accessed.
*/
switch (sp->controller) {
case PCIC_PD6710:
case PCIC_PD6722:
c = sp->getb(sp, PCIC_MISC1);
if ((c & PCIC_MISC1_5V_DETECT) == 0)
slt->pwr.vcc = 33;
else
slt->pwr.vcc = 50;
break;
case PCIC_PD6729:
/*
* VS[12] signals are in slot1's
* extended reg 0xa for both slots.
*/
sp2 = &sc->slots[1];
sp2->putb(sp2, PCIC_EXT_IND, PCIC_EXT_DATA);
c = sp2->getb(sp2, PCIC_EXTENDED);
if (sp == sp2) /* slot 1 */
c >>= 2;
if ((c & PCIC_VS1A) == 0)
slt->pwr.vcc = 33;
else
slt->pwr.vcc = 50;
break;
default:
/* I have no idea how do do this for others */
break;
}
/*
* Regardless of the above, setting the Auto Power
* Switch Enable appears to help.
*/
reg |= PCIC_APSENA;
}
/* Other bridges here */
if (bootverbose && slt->pwr.vcc != -1)
device_printf(sc->dev, "Autodetected %d.%dV card\n",
slt->pwr.vcc / 10, slt->pwr.vcc %10);
}
/*
* XXX Note: The Vpp controls varies quit a bit between bridge chips
* and the following might not be right in all cases. The Linux
* code and wildboar code bases are more complex. However, most
* applications want vpp == vcc and the following code does appear
* to do that for all bridge sets.
*/
switch(slt->pwr.vpp) {
default:
return (EINVAL);
case 0:
break;
case 50:
case 33:
reg |= PCIC_VPP_5V;
break;
case 120:
reg |= PCIC_VPP_12V;
break;
}
if (slt->pwr.vcc)
reg |= PCIC_VCC_ON; /* Turn on Vcc */
switch(slt->pwr.vcc) {
default:
return (EINVAL);
case 0:
break;
case 33:
/*
* The wildboar code has comments that state that
* the IBM KING controller doesn't support 3.3V
* on the "IBM Smart PC card drive". The code
* intemates that's the only place they have seen
* it used and that there's a boatload of issues
* with it. I'm not even sure this is right because
* the only docs I've been able to find say this is for
* 5V power. Of course, this "doc" is just code comments
* so who knows for sure.
*/
if (sc->flags & PCIC_KING_POWER) {
reg |= PCIC_VCC_5V_KING;
break;
}
if (sc->flags & PCIC_VG_POWER) {
pcic_setb(sp, PCIC_CVSR, PCIC_CVSR_VS);
break;
}
if (sc->flags & PCIC_PD_POWER) {
pcic_setb(sp, PCIC_MISC1, PCIC_MISC1_VCC_33);
break;
}
if (sc->flags & PCIC_RICOH_POWER) {
pcic_setb(sp, PCIC_RICOH_MCR2, PCIC_MCR2_VCC_33);
break;
}
if (sc->flags & PCIC_DF_POWER)
reg |= PCIC_VCC_3V;
break;
case -1: /* Treat default like 5.0V */
case 50:
if (sc->flags & PCIC_KING_POWER)
reg |= PCIC_VCC_5V_KING;
/*
* For all of the variant power schemes for 3.3V go
* ahead and turn off the 3.3V enable bit. For all
* bridges, the setting the Vcc on bit does the rest.
* Note that we don't have to turn off the 3.3V bit
* for the '365 step D since with the reg assigments
* to this point it doesn't get turned on.
*/
if (sc->flags & PCIC_VG_POWER)
pcic_clrb(sp, PCIC_CVSR, PCIC_CVSR_VS);
if (sc->flags & PCIC_PD_POWER)
pcic_clrb(sp, PCIC_MISC1, PCIC_MISC1_VCC_33);
if (sc->flags & PCIC_RICOH_POWER)
pcic_clrb(sp, PCIC_RICOH_MCR2, PCIC_MCR2_VCC_33);
break;
}
sp->putb(sp, PCIC_POWER, reg);
DELAY(300*1000);
if (slt->pwr.vcc) {
reg |= PCIC_OUTENA;
sp->putb(sp, PCIC_POWER, reg);
DELAY(100*1000);
}
/*
* Some chipsets will attempt to preclude us from supplying
* 5.0V to cards that only handle 3.3V. We seem to need to
* try 3.3V to paper over some power handling issues in other
* parts of the system. I suspect they are in the pccard bus
* driver, but may be in pccardd as well.
*/
if (!(sp->getb(sp, PCIC_STATUS) & PCIC_POW) && slt->pwr.vcc == -1) {
slt->pwr.vcc = 33;
slt->pwr.vpp = 0;
return (pcic_power(slt));
}
return (0);
}
/*
* tell the PCIC which irq we want to use. only the following are legal:
* 3, 4, 5, 7, 9, 10, 11, 12, 14, 15. We require the callers of this
* routine to do the check for legality.
*/
static void
pcic_mapirq(struct slot *slt, int irq)
{
struct pcic_slot *sp = slt->cdata;
sp->sc->chip->map_irq(sp, irq);
}
/*
* pcic_reset - Reset the card and enable initial power.
*/
static void
pcic_reset(void *chan)
{
struct slot *slt = chan;
struct pcic_slot *sp = slt->cdata;
if (bootverbose)
device_printf(sp->sc->dev, "reset %d ", slt->insert_seq);
switch (slt->insert_seq) {
case 0: /* Something funny happended on the way to the pub... */
if (bootverbose)
printf("\n");
return;
case 1: /* Assert reset */
pcic_clrb(sp, PCIC_INT_GEN, PCIC_CARDRESET);
if (bootverbose)
printf("int is %x stat is %x\n",
sp->getb(sp, PCIC_INT_GEN),
sp->getb(sp, PCIC_STATUS));
slt->insert_seq = 2;
timeout(pcic_reset, (void *)slt, hz/4);
return;
case 2: /* Deassert it again */
pcic_setb(sp, PCIC_INT_GEN, PCIC_CARDRESET | PCIC_IOCARD);
if (bootverbose)
printf("int is %x stat is %x\n",
sp->getb(sp, PCIC_INT_GEN),
sp->getb(sp, PCIC_STATUS));
slt->insert_seq = 3;
timeout(pcic_reset, (void *)slt, hz/4);
return;
case 3: /* Wait if card needs more time */
if (bootverbose)
printf("int is %x stat is %x\n",
sp->getb(sp, PCIC_INT_GEN),
sp->getb(sp, PCIC_STATUS));
if (!sp->getb(sp, PCIC_STATUS) & PCIC_READY) {
timeout(pcic_reset, (void *)slt, hz/10);
return;
}
}
slt->insert_seq = 0;
if (sp->controller == PCIC_PD6722 || sp->controller == PCIC_PD6710) {
sp->putb(sp, PCIC_TIME_SETUP0, 0x1);
sp->putb(sp, PCIC_TIME_CMD0, 0x6);
sp->putb(sp, PCIC_TIME_RECOV0, 0x0);
sp->putb(sp, PCIC_TIME_SETUP1, 1);
sp->putb(sp, PCIC_TIME_CMD1, 0xf);
sp->putb(sp, PCIC_TIME_RECOV1, 0);
}
selwakeup(&slt->selp);
}
/*
* pcic_disable - Disable the slot.
*/
static void
pcic_disable(struct slot *slt)
{
struct pcic_slot *sp = slt->cdata;
pcic_clrb(sp, PCIC_INT_GEN, PCIC_CARDTYPE | PCIC_CARDRESET);
pcic_mapirq(slt, 0);
sp->putb(sp, PCIC_POWER, 0);
}
/*
* pcic_resume - Suspend/resume support for PCIC
*/
static void
pcic_resume(struct slot *slt)
{
struct pcic_slot *sp = slt->cdata;
pcic_do_mgt_irq(sp, slt->irq);
if (sp->controller == PCIC_PD6722) {
pcic_setb(sp, PCIC_MISC1, PCIC_MISC1_SPEAKER);
pcic_setb(sp, PCIC_MISC2, PCIC_LPDM_EN);
}
if (sp->slt->state != inactive)
pcic_do_stat_delta(sp);
}
int
pcic_activate_resource(device_t dev, device_t child, int type, int rid,
struct resource *r)
{
struct pccard_devinfo *devi = device_get_ivars(child);
int err;
if (dev != device_get_parent(device_get_parent(child)) || devi == NULL)
return (bus_generic_activate_resource(dev, child, type,
rid, r));
switch (type) {
case SYS_RES_IOPORT: {
struct io_desc *ip;
ip = &devi->slt->io[rid];
if (ip->flags == 0) {
if (rid == 0)
ip->flags = IODF_WS | IODF_16BIT | IODF_CS16;
else
ip->flags = devi->slt->io[0].flags;
}
ip->flags |= IODF_ACTIVE;
ip->start = rman_get_start(r);
ip->size = rman_get_end(r) - rman_get_start(r) + 1;
err = pcic_io(devi->slt, rid);
if (err)
return (err);
break;
}
case SYS_RES_IRQ:
/*
* We actually defer the activation of the IRQ resource
* until the interrupt is registered to avoid stray
* interrupt messages.
*/
break;
case SYS_RES_MEMORY: {
struct mem_desc *mp;
if (rid >= NUM_MEM_WINDOWS)
return (EINVAL);
mp = &devi->slt->mem[rid];
mp->flags |= MDF_ACTIVE;
mp->start = (caddr_t) rman_get_start(r);
mp->size = rman_get_end(r) - rman_get_start(r) + 1;
err = pcic_memory(devi->slt, rid);
if (err)
return (err);
break;
}
default:
break;
}
err = bus_generic_activate_resource(dev, child, type, rid, r);
return (err);
}
int
pcic_deactivate_resource(device_t dev, device_t child, int type, int rid,
struct resource *r)
{
struct pccard_devinfo *devi = device_get_ivars(child);
int err;
if (dev != device_get_parent(device_get_parent(child)) || devi == NULL)
return (bus_generic_deactivate_resource(dev, child, type,
rid, r));
switch (type) {
case SYS_RES_IOPORT: {
struct io_desc *ip = &devi->slt->io[rid];
ip->flags &= ~IODF_ACTIVE;
err = pcic_io(devi->slt, rid);
if (err)
return (err);
break;
}
case SYS_RES_IRQ:
break;
case SYS_RES_MEMORY: {
struct mem_desc *mp = &devi->slt->mem[rid];
mp->flags &= ~(MDF_ACTIVE | MDF_ATTR);
err = pcic_memory(devi->slt, rid);
if (err)
return (err);
break;
}
default:
break;
}
err = bus_generic_deactivate_resource(dev, child, type, rid, r);
return (err);
}
int
pcic_setup_intr(device_t dev, device_t child, struct resource *irq,
int flags, driver_intr_t *intr, void *arg, void **cookiep)
{
struct pccard_devinfo *devi = device_get_ivars(child);
int err;
if (((1 << rman_get_start(irq)) & PCIC_INT_MASK_ALLOWED) == 0) {
device_printf(dev, "Hardware does not support irq %ld.\n",
rman_get_start(irq));
return (EINVAL);
}
err = bus_generic_setup_intr(dev, child, irq, flags, intr, arg,
cookiep);
if (err == 0)
pcic_mapirq(devi->slt, rman_get_start(irq));
else
device_printf(dev, "Error %d irq %ld\n", err,
rman_get_start(irq));
return (err);
}
int
pcic_teardown_intr(device_t dev, device_t child, struct resource *irq,
void *cookie)
{
struct pccard_devinfo *devi = device_get_ivars(child);
pcic_mapirq(devi->slt, 0);
return (bus_generic_teardown_intr(dev, child, irq, cookie));
}
int
pcic_set_res_flags(device_t bus, device_t child, int restype, int rid,
u_long value)
{
struct pccard_devinfo *devi = device_get_ivars(child);
int err = 0;
switch (restype) {
case SYS_RES_MEMORY: {
struct mem_desc *mp = &devi->slt->mem[rid];
switch (value) {
case PCCARD_A_MEM_COM:
mp->flags &= ~MDF_ATTR;
break;
case PCCARD_A_MEM_ATTR:
mp->flags |= MDF_ATTR;
break;
case PCCARD_A_MEM_8BIT:
mp->flags &= ~MDF_16BITS;
break;
case PCCARD_A_MEM_16BIT:
mp->flags |= MDF_16BITS;
break;
}
err = pcic_memory(devi->slt, rid);
break;
}
default:
err = EOPNOTSUPP;
}
return (err);
}
int
pcic_get_res_flags(device_t bus, device_t child, int restype, int rid,
u_long *value)
{
struct pccard_devinfo *devi = device_get_ivars(child);
int err = 0;
if (value == 0)
return (ENOMEM);
switch (restype) {
case SYS_RES_IOPORT: {
struct io_desc *ip = &devi->slt->io[rid];
*value = ip->flags;
break;
}
case SYS_RES_MEMORY: {
struct mem_desc *mp = &devi->slt->mem[rid];
*value = mp->flags;
break;
}
default:
err = EOPNOTSUPP;
}
return (err);
}
int
pcic_set_memory_offset(device_t bus, device_t child, int rid, u_int32_t offset
#if __FreeBSD_version >= 500000
,u_int32_t *deltap
#endif
)
{
struct pccard_devinfo *devi = device_get_ivars(child);
struct mem_desc *mp = &devi->slt->mem[rid];
mp->card = offset;
#if __FreeBSD_version >= 500000
if (deltap)
*deltap = 0; /* XXX BAD XXX */
#endif
return (pcic_memory(devi->slt, rid));
}
int
pcic_get_memory_offset(device_t bus, device_t child, int rid, u_int32_t *offset)
{
struct pccard_devinfo *devi = device_get_ivars(child);
struct mem_desc *mp = &devi->slt->mem[rid];
if (offset == 0)
return (ENOMEM);
*offset = mp->card;
return (0);
}
struct resource *
pcic_alloc_resource(device_t dev, device_t child, int type, int *rid,
u_long start, u_long end, u_long count, u_int flags)
{
struct pcic_softc *sc = device_get_softc(dev);
/*
* If we're routing via pci, we can share.
*/
if (sc->func_route == pcic_iw_pci && type == SYS_RES_IRQ) {
if (bootverbose)
device_printf(child, "Forcing IRQ to %d\n", sc->irq);
start = end = sc->irq;
flags |= RF_SHAREABLE;
}
return (bus_generic_alloc_resource(dev, child, type, rid, start, end,
count, flags));
}
void
pcic_do_stat_delta(struct pcic_slot *sp)
{
if ((sp->getb(sp, PCIC_STATUS) & PCIC_CD) != PCIC_CD)
pccard_event(sp->slt, card_removed);
else
pccard_event(sp->slt, card_inserted);
}
/*
* Wrapper function for pcicintr so that signatures match.
*/
void
pcic_isa_intr(void *arg)
{
pcic_isa_intr1(arg);
}
/*
* PCIC timer. If the controller doesn't have a free IRQ to use
* or if interrupt steering doesn't work, poll the controller for
* insertion/removal events.
*/
void
pcic_timeout(void *chan)
{
struct pcic_softc *sc = (struct pcic_softc *) chan;
if (pcic_isa_intr1(chan) != 0) {
device_printf(sc->dev,
"Static bug detected, ignoring hardware.");
sc->slot_poll = 0;
return;
}
sc->timeout_ch = timeout(sc->slot_poll, chan, hz/2);
}
/*
* PCIC Interrupt handler.
* Check each slot in turn, and read the card status change
* register. If this is non-zero, then a change has occurred
* on this card, so send an event to the main code.
*/
int
pcic_isa_intr1(void *arg)
{
int slot, s;
u_int8_t chg;
struct pcic_softc *sc = (struct pcic_softc *) arg;
struct pcic_slot *sp = &sc->slots[0];
s = splhigh();
for (slot = 0; slot < PCIC_CARD_SLOTS; slot++, sp++) {
if (sp->slt == NULL)
continue;
if ((chg = sp->getb(sp, PCIC_STAT_CHG)) != 0) {
/*
* if chg is 0xff, then we know that we've hit
* the famous "static bug" for some desktop
* pcmcia cards. This is caused by static
* discharge frying the poor card's mind and
* it starts return 0xff forever. We return
* an error and stop polling the card. When
* we're interrupt based, we never see this.
* The card just goes away silently.
*/
if (chg == 0xff) {
splx(s);
return (EIO);
}
if (chg & PCIC_CDTCH)
pcic_do_stat_delta(sp);
}
}
splx(s);
return (0);
}
int
pcic_isa_mapirq(struct pcic_slot *sp, int irq)
{
irq = host_irq_to_pcic(irq);
sp->sc->chip->func_intr_way(sp, pcic_iw_isa);
if (irq == 0)
pcic_clrb(sp, PCIC_INT_GEN, 0xF);
else
sp->putb(sp, PCIC_INT_GEN,
(sp->getb(sp, PCIC_INT_GEN) & 0xF0) | irq);
return (0);
}
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