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freebsd/sys/pccard/pcic.c
Nate Williams e4c50d858a - Only poll the PCIC controller for insertion/removal events if the 
controller hasn't been assigned an IRQ.
1998-04-20 15:15:20 +00:00

1124 lines
26 KiB
C
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/*
* Intel PCIC or compatible Controller driver
* May be built using LKM to make a loadable module.
*-------------------------------------------------------------------------
*
* 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.
*/
/*
* pcic98 : PC9801 original PCMCIA controller code for NS/A,Ne,NX/C,NR/L.
* by Noriyuki Hosobuchi <yj8n-hsbc@asahi-net.or.jp>
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/select.h>
#include <sys/interrupt.h>
#include <machine/clock.h>
#include <i386/isa/icu.h>
#include <i386/isa/isa_device.h>
#include <pccard/i82365.h>
#ifdef PC98
#include <pccard/pcic98reg.h>
#endif
#include <pccard/cardinfo.h>
#include <pccard/driver.h>
#include <pccard/slot.h>
/*
* Prototypes for interrupt handler.
*/
static void pcicintr __P((int unit));
static int pcic_ioctl __P((struct slot *, int, caddr_t));
static int pcic_power __P((struct slot *));
static timeout_t pcic_reset;
static void pcic_resume(struct slot *);
static void pcic_disable __P((struct slot *));
static void pcic_mapirq __P((struct slot *, int));
static timeout_t pcictimeout;
static struct callout_handle pcictimeout_ch
= CALLOUT_HANDLE_INITIALIZER(&pcictimeout_ch);
#ifdef LKM
static int pcic_handle __P((struct lkm_table *lkmtp, int cmd));
#endif
static int pcic_memory(struct slot *, int);
static int pcic_io(struct slot *, int);
static u_int build_freelist(u_int);
/*
* Per-slot data table.
*/
static struct pcic_slot {
int slotnum; /* My slot number */
int index; /* Index register */
int data; /* Data register */
int offset; /* Offset value for index */
char controller; /* Device type */
char revision; /* Device Revision */
struct slot *slt; /* Back ptr to slot */
u_char (*getb)(struct pcic_slot *, int);
void (*putb)(struct pcic_slot *, int, u_char);
u_char *regs; /* Pointer to regs in mem */
} pcic_slots[PCIC_MAX_SLOTS];
static int pcic_irq;
static unsigned pcic_imask;
static struct slot_ctrl cinfo;
/*
* Internal inline functions for accessing the PCIC.
*/
/*
* Read a register from the PCIC.
*/
static __inline unsigned char
getb1(struct pcic_slot *sp, int reg)
{
outb(sp->index, sp->offset + reg);
return inb(sp->data);
}
static __inline unsigned char
getb2(struct pcic_slot *sp, int reg)
{
return (sp->regs[reg]);
}
/*
* Write a register on the PCIC
*/
static __inline void
putb1(struct pcic_slot *sp, int reg, unsigned char val)
{
outb(sp->index, sp->offset + reg);
outb(sp->data, val);
}
static __inline void
putb2(struct pcic_slot *sp, int reg, unsigned char val)
{
sp->regs[reg] = val;
}
/*
* Clear bit(s) of a register.
*/
static __inline void
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
*/
static __inline void
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
putw(struct pcic_slot *sp, int reg, unsigned short word)
{
sp->putb(sp, reg, word & 0xFF);
sp->putb(sp, reg + 1, (word >> 8) & 0xff);
}
/*
* Loadable kernel module interface.
*/
#ifdef LKM
/*
* This defines the lkm_misc module use by modload
* to define the module name.
*/
MOD_MISC(pcic);
/*
* Module handler that processes loads and unloads.
* Once the module is loaded, the probe routine
* is called to install the slots (if any).
*/
static int
pcic_handle(struct lkm_table *lkmtp, int cmd)
{
int err = 0; /* default = success*/
switch(cmd) {
case LKM_E_LOAD:
/*
* Don't load twice! (lkmexists() is exported by kern_lkm.c)
*/
if (lkmexists(lkmtp))
return(EEXIST);
/*
* Call the probe routine to find the slots. If
* no slots exist, then don't bother loading the module.
*/
if (pcic_probe() == 0)
return(ENODEV);
break; /* Success*/
/*
* Attempt to unload the slot driver.
*/
case LKM_E_UNLOAD:
printf("Unloading PCIC driver\n");
err = pcic_unload(lkmtp, cmd);
break; /* Success*/
default: /* we only understand load/unload*/
err = EINVAL;
break;
}
return(err);
}
/*
* External entry point; should generally match name of .o file. The
* arguments are always the same for all loaded modules. The "load",
* "unload", and "stat" functions in "DISPATCH" will be called under
* their respective circumstances unless their value is "lkm_nullcmd".
* If called, they are called with the same arguments (cmd is included to
* allow the use of a single function, ver is included for version
* matching between modules and the kernel loader for the modules).
*
* Since we expect to link in the kernel and add external symbols to
* the kernel symbol name space in a future version, generally all
* functions used in the implementation of a particular module should
* be static unless they are expected to be seen in other modules or
* to resolve unresolved symbols alread existing in the kernel (the
* second case is not likely to ever occur).
*
* The entry point should return 0 unless it is refusing load (in which
* case it should return an errno from errno.h).
*/
int
pcic_mod(struct lkm_table *lkmtp, int cmd, int ver)
{
MOD_DISPATCH(pcic, lkmtp, cmd, ver,
pcic_handle, pcic_handle, lkm_nullcmd);
}
/*
* pcic_unload - Called when unloading a LKM.
* Disables interrupts and resets PCIC.
*/
static int
pcic_unload(struct lkm_table *lkmtp, int cmd)
{
int slot;
struct pcic_slot *sp = pcic_slots;
untimeout(pcictimeout, 0, pcictimeout_ch);
if (pcic_irq) {
for (slot = 0; slot < PCIC_MAX_SLOTS; slot++, sp++) {
if (sp->slt)
sp->putb(sp, PCIC_STAT_INT, 0);
}
unregister_intr(pcic_irq, pcicintr);
}
pccard_remove_controller(&cinfo);
return(0);
}
#endif /* LKM */
#if 0
static void
pcic_dump_attributes(unsigned char *scratch, int maxlen)
{
int i,j,k;
i = 0;
while (scratch[i] != 0xff && i < maxlen) {
unsigned char link = scratch[i+2];
/*
* Dump attribute memory
*/
if (scratch[i]) {
printf("[%02x] ", i);
for (j = 0; j < 2 * link + 4 && j < 128; j += 2)
printf("%02x ", scratch[j + i]);
printf("\n");
}
i += 4 + 2 * link;
}
}
#endif
static void
nullfunc(int unit)
{
/* empty */
}
static u_int
build_freelist(u_int pcic_mask)
{
int irq;
u_int mask, freemask;
/* No free IRQs (yet). */
freemask = 0;
/* Walk through all of the IRQ's and find any that aren't allocated. */
for (irq = 1; irq < ICU_LEN; irq++) {
/*
* If the PCIC controller can't generate it, don't
* bother checking to see if it it's free.
*/
mask = 1 << irq;
if (!(mask & pcic_mask)) continue;
/* See if the IRQ is free. */
if (register_intr(irq, 0, 0, nullfunc, NULL, irq) == 0) {
/* Give it back, but add it to the mask */
INTRMASK(freemask, mask);
unregister_intr(irq, nullfunc);
}
}
#ifdef PCIC_DEBUG
printf("Freelist of IRQ's <0x%x>\n", freemask);
#endif
return freemask;
}
/*
* 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 = mp->window * PCIC_MEMSIZE + PCIC_MEMBASE;
#ifdef PC98
if (sp->controller == PCIC_PC98) {
if (mp->flags & MDF_ACTIVE) {
/* slot = 0, window = 0, sys_addr = 0xda000, length = 8KB */
unsigned char x;
if ((unsigned long)mp->start != 0xda000) {
printf("sys_addr must be 0xda000. requested address = 0x%x\n",
mp->start);
return(EINVAL);
}
/* omajinai ??? */
outb(PCIC98_REG0, 0);
x = inb(PCIC98_REG1);
x &= 0xfc;
x |= 0x02;
outb(PCIC98_REG1, x);
outw(PCIC98_REG_PAGOFS, 0);
if (mp->flags & MDF_ATTR) {
outb(PCIC98_REG6, inb(PCIC98_REG6) | PCIC98_ATTRMEM);
}else{
outb(PCIC98_REG6, inb(PCIC98_REG6) & (~PCIC98_ATTRMEM));
}
outb(PCIC98_REG_WINSEL, PCIC98_MAPWIN);
#if 0
if (mp->flags & MDF_16BITS == 1) { /* 16bit */
outb(PCIC98_REG2, inb(PCIC98_REG2) & (~PCIC98_8BIT));
}else{ /* 8bit */
outb(PCIC98_REG2, inb(PCIC98_REG2) | PCIC98_8BIT);
}
#endif
}else{
outb(PCIC98_REG_WINSEL, PCIC98_UNMAPWIN);
}
return 0;
}
#endif /* PC98 */
if (mp->flags & MDF_ACTIVE) {
unsigned long sys_addr = (unsigned long)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.
*/
putw(sp, reg, sys_addr & 0xFFF);
putw(sp, reg+2, (sys_addr + (mp->size >> 12) - 1) & 0xFFF);
putw(sp, reg+4, ((mp->card >> 12) - sys_addr) & 0x3FFF);
#if 0
printf("card offs = card_adr = 0x%x 0x%x, sys_addr = 0x%x\n",
mp->card, ((mp->card >> 12) - sys_addr) & 0x3FFF,
sys_addr);
#endif
/*
* Each 16 bit register has some flags in the upper bits.
*/
if (mp->flags & MDF_16BITS)
setb(sp, reg+1, PCIC_DATA16);
if (mp->flags & MDF_ZEROWS)
setb(sp, reg+1, PCIC_ZEROWS);
if (mp->flags & MDF_WS0)
setb(sp, reg+3, PCIC_MW0);
if (mp->flags & MDF_WS1)
setb(sp, reg+3, PCIC_MW1);
if (mp->flags & MDF_ATTR)
setb(sp, reg+5, PCIC_REG);
if (mp->flags & MDF_WP)
setb(sp, reg+5, PCIC_WP);
#if 0
printf("Slot number %d, reg 0x%x, offs 0x%x\n",
sp->slotnum, reg, sp->offset);
printf("Map window to sys addr 0x%x for %d bytes, card 0x%x\n",
mp->start, mp->size, mp->card);
printf("regs are: 0x%02x%02x 0x%02x%02x 0x%02x%02x flags 0x%x\n",
sp->getb(sp, reg), sp->getb(sp, reg+1),
sp->getb(sp, reg+2), sp->getb(sp, reg+3),
sp->getb(sp, reg+4), sp->getb(sp, reg+5),
mp->flags);
#endif
/*
* Enable the memory window. By experiment, we need a delay.
*/
setb(sp, PCIC_ADDRWINE, (1<<win) | PCIC_MEMCS16);
DELAY(50);
} else {
#if 0
printf("Unmapping window %d\n", win);
#endif
clrb(sp, PCIC_ADDRWINE, 1<<win);
putw(sp, reg, 0);
putw(sp, reg+2, 0);
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];
#ifdef PC98
if (sp->controller == PCIC_PC98) {
unsigned char x;
#if 0
if (win =! 0) {
printf("pcic98:Illegal PCIC I/O window request(%d)!", win);
return(EINVAL);
}
#endif
if (ip->flags & IODF_ACTIVE) {
unsigned short base;
x = inb(PCIC98_REG2) & 0x0f;
if (! (ip->flags & IODF_16BIT))
x |= PCIC98_8BIT;
if (ip->size > 16) /* 128bytes mapping */
x |= PCIC98_MAP128;
x |= PCIC98_IOMEMORY;
outb(PCIC98_REG2, x);
base = 0x80d0;
outw(PCIC98_REG4, base); /* 98side IO base */
outw(PCIC98_REG5, ip->start); /* card side IO base */
#ifdef PCIC_DEBUG
printf("pcic98: IO mapped 0x%04x(98) -> 0x%04x(Card) and width %d bytes\n",
base, ip->start, ip->size);
#endif
ip->start = base;
}else{
outb(PCIC98_REG2, inb(PCIC98_REG2) & (~PCIC98_IOMEMORY));
}
return 0;
}
#endif
switch (win) {
case 0:
mask = PCIC_IO0_EN;
reg = PCIC_IO0;
break;
case 1:
mask = PCIC_IO1_EN;
reg = PCIC_IO1;
break;
default:
panic("Illegal PCIC I/O window request!");
}
if (ip->flags & IODF_ACTIVE) {
unsigned char x, ioctlv;
#ifdef PCIC_DEBUG
printf("Map I/O 0x%x (size 0x%x) on Window %d\n", ip->start, ip->size, win);
#endif /* PCIC_DEBUG */
putw(sp, reg, ip->start);
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);
setb(sp, PCIC_ADDRWINE, mask);
DELAY(100);
} else {
clrb(sp, PCIC_ADDRWINE, mask);
DELAY(100);
putw(sp, reg, 0);
putw(sp, reg + 2, 0);
}
return(0);
}
/*
* Look for an Intel PCIC (or compatible).
* For each available slot, allocate a PC-CARD slot.
*/
/*
* VLSI 82C146 has incompatibilities about the I/O address
* of slot 1. Assume it's the only PCIC whose vendor ID is 0x84,
* contact Nate Williams <nate@FreeBSD.org> if incorrect.
*/
int
pcic_probe(void)
{
int slotnum, i, validslots = 0;
u_int free_irqs;
struct slot *slt;
struct pcic_slot *sp;
unsigned char c;
static int maybe_vlsi = 0;
/* Determine the list of free interrupts */
free_irqs = build_freelist(PCIC_INT_MASK_ALLOWED);
/*
* Initialise controller information structure.
*/
cinfo.mapmem = pcic_memory;
cinfo.mapio = pcic_io;
cinfo.ioctl = pcic_ioctl;
cinfo.power = pcic_power;
cinfo.mapirq = pcic_mapirq;
cinfo.reset = pcic_reset;
cinfo.disable = pcic_disable;
cinfo.resume = pcic_resume;
cinfo.maxmem = PCIC_MEM_WIN;
cinfo.maxio = PCIC_IO_WIN;
cinfo.irqs = free_irqs;
cinfo.imask = &pcic_imask;
#ifdef LKM
bzero(pcic_slots, sizeof(pcic_slots));
#endif
sp = pcic_slots;
for (slotnum = 0; slotnum < PCIC_MAX_SLOTS; slotnum++, sp++) {
/*
* Initialise the PCIC slot table.
*/
sp->getb = getb1;
sp->putb = putb1;
if (slotnum < 4) {
sp->index = PCIC_INDEX_0;
sp->data = PCIC_DATA_0;
sp->offset = slotnum * PCIC_SLOT_SIZE;
} else {
sp->index = PCIC_INDEX_1;
sp->data = PCIC_DATA_1;
sp->offset = (slotnum - 4) * PCIC_SLOT_SIZE;
}
/*
* XXX - Screwed up slot 1 on the VLSI chips. According to
* the Linux PCMCIA code from David Hinds, working chipsets
* return 0x84 from their (correct) ID ports, while the broken
* ones would need to be probed at the new offset we set after
* we assume it's broken.
*/
if (slotnum == 1 && maybe_vlsi && sp->getb(sp, PCIC_ID_REV) != 0x84) {
sp->index += 4;
sp->data += 4;
sp->offset = PCIC_SLOT_SIZE << 1;
}
/*
* see if there's a PCMCIA controller here
* Intel PCMCIA controllers use 0x82 and 0x83
* IBM clone chips use 0x88 and 0x89, apparently
*/
c = sp->getb(sp, PCIC_ID_REV);
sp->revision = -1;
switch(c) {
/*
* 82365 or clones.
*/
case 0x82:
case 0x83:
sp->controller = PCIC_I82365;
sp->revision = c & 1;
/*
* Now check for VADEM chips.
*/
outb(sp->index, 0x0E);
outb(sp->index, 0x37);
setb(sp, 0x3A, 0x40);
c = sp->getb(sp, PCIC_ID_REV);
if (c & 0x08) {
sp->controller = ((sp->revision = c & 7) == 4) ?
PCIC_VG469 : PCIC_VG468 ;
clrb(sp, 0x3A, 0x40);
}
/*
* Check for RICOH RF5C396 PCMCIA Controller
*/
c = sp->getb(sp, 0x3a);
if (c == 0xb2) {
sp->controller = PCIC_RF5C396;
}
break;
/*
* VLSI chips.
*/
case 0x84:
sp->controller = PCIC_VLSI;
maybe_vlsi = 1;
break;
case 0x88:
case 0x89:
sp->controller = PCIC_IBM;
sp->revision = c & 1;
break;
case 0x8a:
sp->controller = PCIC_IBM_KING;
sp->revision = c & 1;
break;
default:
continue;
}
/*
* Check for Cirrus logic chips.
*/
sp->putb(sp, 0x1F, 0);
c = sp->getb(sp, 0x1F);
if ((c & 0xC0) == 0xC0) {
c = sp->getb(sp, 0x1F);
if ((c & 0xC0) == 0) {
if (c & 0x20)
sp->controller = PCIC_PD672X;
else
sp->controller = PCIC_PD6710;
sp->revision = 8 - ((c & 0x1F) >> 2);
}
}
switch(sp->controller) {
case PCIC_I82365:
cinfo.name = "Intel 82365";
break;
case PCIC_IBM:
cinfo.name = "IBM PCIC";
break;
case PCIC_IBM_KING:
cinfo.name = "IBM KING PCMCIA Controller";
break;
case PCIC_PD672X:
cinfo.name = "Cirrus Logic PD672X";
break;
case PCIC_PD6710:
cinfo.name = "Cirrus Logic PD6710";
break;
case PCIC_VG468:
cinfo.name = "Vadem 468";
break;
case PCIC_VG469:
cinfo.name = "Vadem 469";
break;
case PCIC_RF5C396:
cinfo.name = "Ricoh RF5C396";
break;
case PCIC_VLSI:
cinfo.name = "VLSI 82C146";
break;
default:
cinfo.name = "Unknown!";
break;
}
/*
* OK it seems we have a PCIC or lookalike.
* Allocate a slot and initialise the data structures.
*/
validslots++;
sp->slotnum = slotnum;
slt = pccard_alloc_slot(&cinfo);
if (slt == 0)
continue;
slt->cdata = sp;
sp->slt = slt;
/*
* If we haven't allocated an interrupt for the controller,
* then attempt to get one.
*/
if (pcic_irq == 0) {
pcic_imask = soft_imask;
pcic_irq = pccard_alloc_intr(free_irqs,
pcicintr, 0, &pcic_imask, NULL);
if (pcic_irq < 0)
printf("pcic: failed to allocate IRQ\n");
else
printf("pcic: controller irq %d\n", pcic_irq);
}
/*
* Modem cards send the speaker audio (dialing noises)
* to the host's speaker. Cirrus Logic PCIC chips must
* enable this. There is also a Low Power Dynamic Mode bit
* that claims to reduce power consumption by 30%, so
* enable it and hope for the best.
*/
if (sp->controller == PCIC_PD672X) {
setb(sp, PCIC_MISC1, PCIC_SPKR_EN);
setb(sp, PCIC_MISC2, PCIC_LPDM_EN);
}
/*
* Check for a card in this slot.
*/
setb(sp, PCIC_POWER, PCIC_PCPWRE| PCIC_DISRST);
if ((sp->getb(sp, PCIC_STATUS) & PCIC_CD) != PCIC_CD) {
slt->laststate = slt->state = empty;
} else {
slt->laststate = slt->state = filled;
pccard_event(sp->slt, card_inserted);
}
/*
* Assign IRQ for slot changes
*/
if (pcic_irq > 0)
sp->putb(sp, PCIC_STAT_INT, (pcic_irq << 4) | 0xF);
}
#ifdef PC98
if (validslots == 0) {
sp = pcic_slots;
slotnum = 0;
if (inb(PCIC98_REG0) != 0xff) {
sp->controller = PCIC_PC98;
sp->revision = 0;
cinfo.name = "PC98 Original";
cinfo.maxmem = 1;
cinfo.maxio = 1;
/* cinfo.irqs = PCIC_INT_MASK_ALLOWED;*/
cinfo.irqs = 0x1468;
validslots++;
sp->slotnum = slotnum;
slt = pccard_alloc_slot(&cinfo);
if (slt == 0) {
printf("pcic98: slt == NULL\n");
goto pcic98_probe_end;
}
slt->cdata = sp;
sp->slt = slt;
/* Check for a card in this slot */
if (inb(PCIC98_REG1) & PCIC98_CARDEXIST) {
/* PCMCIA card exist */
slt->laststate = slt->state = filled;
pccard_event(sp->slt, card_inserted);
} else {
slt->laststate = slt->state = empty;
}
}
pcic98_probe_end:
}
#endif /* PC98 */
if (validslots && pcic_irq <= 0)
pcictimeout_ch = timeout(pcictimeout, 0, hz/2);
return(validslots);
}
/*
* ioctl calls - Controller specific ioctls
*/
static int
pcic_ioctl(struct slot *slt, int cmd, caddr_t data)
{
struct pcic_slot *sp = slt->cdata;
switch(cmd) {
default:
return(EINVAL);
/*
* Get/set PCIC registers
*/
case PIOCGREG:
((struct pcic_reg *)data)->value =
sp->getb(sp, ((struct pcic_reg *)data)->reg);
break;
case PIOCSREG:
sp->putb(sp, ((struct pcic_reg *)data)->reg,
((struct pcic_reg *)data)->value);
break;
}
return(0);
}
/*
* 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 reg = PCIC_DISRST|PCIC_PCPWRE;
struct pcic_slot *sp = slt->cdata;
switch(sp->controller) {
#ifdef PC98
case PCIC_PC98:
reg = inb(PCIC98_REG6) & (~PCIC98_VPP12V);
switch(slt->pwr.vpp) {
default:
return(EINVAL);
case 50:
break;
case 120:
reg |= PCIC98_VPP12V;
break;
}
outb(PCIC98_REG6, reg);
DELAY(100*1000);
reg = inb(PCIC98_REG2) & (~PCIC98_VCC3P3V);
switch(slt->pwr.vcc) {
default:
return(EINVAL);
case 33:
reg |= PCIC98_VCC3P3V;
break;
case 50:
break;
}
outb(PCIC98_REG2, reg);
DELAY(100*1000);
return (0);
#endif
case PCIC_PD672X:
case PCIC_PD6710:
case PCIC_VG468:
case PCIC_VG469:
case PCIC_RF5C396:
case PCIC_VLSI:
case PCIC_IBM_KING:
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;
}
switch(slt->pwr.vcc) {
default:
return(EINVAL);
case 0:
break;
case 33:
if (sp->controller == PCIC_IBM_KING) {
reg |= PCIC_VCC_5V_KING;
break;
}
reg |= PCIC_VCC_3V;
if ((sp->controller == PCIC_VG468)||
(sp->controller == PCIC_VG469))
setb(sp, 0x2f, 0x03) ;
else
setb(sp, 0x16, 0x02);
break;
case 50:
if (sp->controller == PCIC_IBM_KING) {
reg |= PCIC_VCC_5V_KING;
break;
}
reg |= PCIC_VCC_5V;
if ((sp->controller == PCIC_VG468)||
(sp->controller == PCIC_VG469))
clrb(sp, 0x2f, 0x03) ;
else
clrb(sp, 0x16, 0x02);
break;
}
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 chips are smarter than us it seems, so if we weren't
* allowed to use 5V, try 3.3 instead
*/
if (!(sp->getb(sp, PCIC_STATUS) & 0x40) && slt->pwr.vcc == 50) {
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
*/
static void
pcic_mapirq(struct slot *slt, int irq)
{
struct pcic_slot *sp = slt->cdata;
#ifdef PC98
if (sp->controller == PCIC_PC98) {
unsigned char x;
switch (irq) {
case 3:
x = PCIC98_INT0; break;
case 5:
x = PCIC98_INT1; break;
case 6:
x = PCIC98_INT2; break;
case 10:
x = PCIC98_INT4; break;
case 12:
x = PCIC98_INT5; break;
case 0: /* disable */
x = PCIC98_INTDISABLE;
break;
default:
printf("pcic98: illegal irq %d\n", irq);
return;
}
#ifdef PCIC_DEBUG
printf("pcic98: irq=%d mapped.\n", irq);
#endif
outb(PCIC98_REG3, x);
return;
}
#endif
if (irq == 0)
clrb(sp, PCIC_INT_GEN, 0xF);
else
sp->putb(sp, PCIC_INT_GEN,
(sp->getb(sp, PCIC_INT_GEN) & 0xF0) | 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;
#ifdef PC98
if (sp->controller == PCIC_PC98) {
outb(PCIC98_REG0, 0);
outb(PCIC98_REG2, inb(PCIC98_REG2) & (~PCIC98_IOMEMORY));
outb(PCIC98_REG3, PCIC98_INTDISABLE);
outb(PCIC98_REG2, inb(PCIC98_REG2) & (~PCIC98_VCC3P3V));
outb(PCIC98_REG6, inb(PCIC98_REG6) & (~PCIC98_VPP12V));
outb(PCIC98_REG1, 0);
selwakeup(&slt->selp);
return;
}
#endif
switch (slt->insert_seq) {
case 0: /* Something funny happended on the way to the pub... */
return;
case 1: /* Assert reset */
clrb(sp, PCIC_INT_GEN, PCIC_CARDRESET);
slt->insert_seq = 2;
timeout(pcic_reset, (void *)slt, hz/4);
return;
case 2: /* Deassert it again */
setb(sp, PCIC_INT_GEN, PCIC_CARDRESET|PCIC_IOCARD);
slt->insert_seq = 3;
timeout(pcic_reset, (void *)slt, hz/4);
return;
case 3: /* Wait if card needs more time */
if (!sp->getb(sp, PCIC_STATUS) & PCIC_READY) {
timeout(pcic_reset, (void *)slt, hz/10);
return;
}
}
slt->insert_seq = 0;
if (sp->controller == PCIC_PD672X || 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;
#ifdef PC98
if (sp->controller == PCIC_PC98) {
return;
}
#endif
sp->putb(sp, PCIC_INT_GEN, 0);
sp->putb(sp, PCIC_POWER, 0);
}
/*
* 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.
*/
static void
pcictimeout(void *chan)
{
pcicintr(0);
pcictimeout_ch = timeout(pcictimeout, 0, 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.
*/
static void
pcicintr(int unit)
{
int slot, s;
unsigned char chg;
struct pcic_slot *sp = pcic_slots;
#ifdef PC98
if (sp->controller == PCIC_PC98) {
slot = 0;
s = splhigh();
/* Check for a card in this slot */
if (inb(PCIC98_REG1) & PCIC98_CARDEXIST) {
if (sp->slt->laststate != filled) {
pccard_event(sp->slt, card_inserted);
}
} else {
if (sp->slt->laststate != empty) {
pccard_event(sp->slt, card_removed);
}
}
splx(s);
return;
}
#endif /* PC98 */
s = splhigh();
for (slot = 0; slot < PCIC_MAX_SLOTS; slot++, sp++)
if (sp->slt && (chg = sp->getb(sp, PCIC_STAT_CHG)) != 0)
if (chg & PCIC_CDTCH) {
if ((sp->getb(sp, PCIC_STATUS) & PCIC_CD) ==
PCIC_CD) {
pccard_event(sp->slt, card_inserted);
} else {
pccard_event(sp->slt, card_removed);
}
}
splx(s);
}
/*
* pcic_resume - Suspend/resume support for PCIC
*/
static void
pcic_resume(struct slot *slt)
{
struct pcic_slot *sp = slt->cdata;
if (pcic_irq > 0)
sp->putb(sp, PCIC_STAT_INT, (pcic_irq << 4) | 0xF);
if (sp->controller == PCIC_PD672X) {
setb(sp, PCIC_MISC1, PCIC_SPKR_EN);
setb(sp, PCIC_MISC2, PCIC_LPDM_EN);
}
}
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