08764b841b
kind we can manage in a set of configurations" and "the number of resources of a particular kind that can be programmed into an ISA PnP adapter". Submitted by: Motomichi Matsuzaki <mzaki@e-mail.ne.jp> Submitted by: Hirokazu WATANABE <gwna@geocities.co.jp>
827 lines
20 KiB
C
827 lines
20 KiB
C
/*
|
|
* Copyright (c) 1996, Sujal M. Patel
|
|
* 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
|
|
*
|
|
* $FreeBSD$
|
|
* from: pnp.c,v 1.11 1999/05/06 22:11:19 peter Exp
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/module.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/malloc.h>
|
|
#include <isa/isavar.h>
|
|
#include <isa/pnpreg.h>
|
|
#include <isa/pnpvar.h>
|
|
#include <machine/clock.h>
|
|
#include <machine/bus.h>
|
|
|
|
typedef struct _pnp_id {
|
|
u_int32_t vendor_id;
|
|
u_int32_t serial;
|
|
u_char checksum;
|
|
} pnp_id;
|
|
|
|
struct pnp_set_config_arg {
|
|
int csn; /* Card number to configure */
|
|
int ldn; /* Logical device on card */
|
|
};
|
|
|
|
struct pnp_quirk {
|
|
u_int32_t vendor_id; /* Vendor of the card */
|
|
u_int32_t logical_id; /* ID of the device with quirk */
|
|
int type;
|
|
#define PNP_QUIRK_WRITE_REG 1 /* Need to write a pnp register */
|
|
#define PNP_QUIRK_EXTRA_IO 2 /* Has extra io ports */
|
|
int arg1;
|
|
int arg2;
|
|
};
|
|
|
|
struct pnp_quirk pnp_quirks[] = {
|
|
/*
|
|
* The Gravis UltraSound needs register 0xf2 to be set to 0xff
|
|
* to enable power.
|
|
* XXX need to know the logical device id.
|
|
*/
|
|
{ 0x0100561e /* GRV0001 */, 0,
|
|
PNP_QUIRK_WRITE_REG, 0xf2, 0xff },
|
|
/*
|
|
* An emu8000 does not give us other than the first
|
|
* port.
|
|
*/
|
|
{ 0x26008c0e /* SB16 */, 0x21008c0e,
|
|
PNP_QUIRK_EXTRA_IO, 0x400, 0x800 },
|
|
{ 0x42008c0e /* SB32(CTL0042) */, 0x21008c0e,
|
|
PNP_QUIRK_EXTRA_IO, 0x400, 0x800 },
|
|
{ 0x44008c0e /* SB32(CTL0044) */, 0x21008c0e,
|
|
PNP_QUIRK_EXTRA_IO, 0x400, 0x800 },
|
|
{ 0x49008c0e /* SB32(CTL0049) */, 0x21008c0e,
|
|
PNP_QUIRK_EXTRA_IO, 0x400, 0x800 },
|
|
{ 0xf1008c0e /* SB32(CTL00f1) */, 0x21008c0e,
|
|
PNP_QUIRK_EXTRA_IO, 0x400, 0x800 },
|
|
{ 0xc1008c0e /* SB64(CTL00c1) */, 0x22008c0e,
|
|
PNP_QUIRK_EXTRA_IO, 0x400, 0x800 },
|
|
{ 0xe4008c0e /* SB64(CTL00e4) */, 0x22008c0e,
|
|
PNP_QUIRK_EXTRA_IO, 0x400, 0x800 },
|
|
|
|
{ 0 }
|
|
};
|
|
|
|
#if 0
|
|
/*
|
|
* these entries are initialized using the autoconfig menu
|
|
* The struct is invalid (and must be initialized) if the first
|
|
* CSN is zero. The init code fills invalid entries with CSN 255
|
|
* which is not a supported value.
|
|
*/
|
|
|
|
struct pnp_cinfo pnp_ldn_overrides[MAX_PNP_LDN] = {
|
|
{ 0 }
|
|
};
|
|
#endif
|
|
|
|
/* The READ_DATA port that we are using currently */
|
|
static int pnp_rd_port;
|
|
|
|
static void pnp_send_initiation_key(void);
|
|
static int pnp_get_serial(pnp_id *p);
|
|
static int pnp_isolation_protocol(device_t parent);
|
|
|
|
char *
|
|
pnp_eisaformat(u_int32_t id)
|
|
{
|
|
u_int8_t *data = (u_int8_t *) &id;
|
|
static char idbuf[8];
|
|
const char hextoascii[] = "0123456789abcdef";
|
|
|
|
idbuf[0] = '@' + ((data[0] & 0x7c) >> 2);
|
|
idbuf[1] = '@' + (((data[0] & 0x3) << 3) + ((data[1] & 0xe0) >> 5));
|
|
idbuf[2] = '@' + (data[1] & 0x1f);
|
|
idbuf[3] = hextoascii[(data[2] >> 4)];
|
|
idbuf[4] = hextoascii[(data[2] & 0xf)];
|
|
idbuf[5] = hextoascii[(data[3] >> 4)];
|
|
idbuf[6] = hextoascii[(data[3] & 0xf)];
|
|
idbuf[7] = 0;
|
|
return(idbuf);
|
|
}
|
|
|
|
static void
|
|
pnp_write(int d, u_char r)
|
|
{
|
|
outb (_PNP_ADDRESS, d);
|
|
outb (_PNP_WRITE_DATA, r);
|
|
}
|
|
|
|
#if 0
|
|
|
|
static u_char
|
|
pnp_read(int d)
|
|
{
|
|
outb (_PNP_ADDRESS, d);
|
|
return (inb(3 | (pnp_rd_port <<2)));
|
|
}
|
|
|
|
#endif
|
|
|
|
/*
|
|
* Send Initiation LFSR as described in "Plug and Play ISA Specification",
|
|
* Intel May 94.
|
|
*/
|
|
static void
|
|
pnp_send_initiation_key()
|
|
{
|
|
int cur, i;
|
|
|
|
/* Reset the LSFR */
|
|
outb(_PNP_ADDRESS, 0);
|
|
outb(_PNP_ADDRESS, 0); /* yes, we do need it twice! */
|
|
|
|
cur = 0x6a;
|
|
outb(_PNP_ADDRESS, cur);
|
|
|
|
for (i = 1; i < 32; i++) {
|
|
cur = (cur >> 1) | (((cur ^ (cur >> 1)) << 7) & 0xff);
|
|
outb(_PNP_ADDRESS, cur);
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* Get the device's serial number. Returns 1 if the serial is valid.
|
|
*/
|
|
static int
|
|
pnp_get_serial(pnp_id *p)
|
|
{
|
|
int i, bit, valid = 0, sum = 0x6a;
|
|
u_char *data = (u_char *)p;
|
|
|
|
bzero(data, sizeof(char) * 9);
|
|
outb(_PNP_ADDRESS, PNP_SERIAL_ISOLATION);
|
|
for (i = 0; i < 72; i++) {
|
|
bit = inb((pnp_rd_port << 2) | 0x3) == 0x55;
|
|
DELAY(250); /* Delay 250 usec */
|
|
|
|
/* Can't Short Circuit the next evaluation, so 'and' is last */
|
|
bit = (inb((pnp_rd_port << 2) | 0x3) == 0xaa) && bit;
|
|
DELAY(250); /* Delay 250 usec */
|
|
|
|
valid = valid || bit;
|
|
|
|
if (i < 64)
|
|
sum = (sum >> 1) |
|
|
(((sum ^ (sum >> 1) ^ bit) << 7) & 0xff);
|
|
|
|
data[i / 8] = (data[i / 8] >> 1) | (bit ? 0x80 : 0);
|
|
}
|
|
|
|
valid = valid && (data[8] == sum);
|
|
|
|
return valid;
|
|
}
|
|
|
|
/*
|
|
* Fill's the buffer with resource info from the device.
|
|
* Returns the number of characters read.
|
|
*/
|
|
static int
|
|
pnp_get_resource_info(u_char *buffer, int len)
|
|
{
|
|
int i, j, count;
|
|
u_char temp;
|
|
|
|
count = 0;
|
|
for (i = 0; i < len; i++) {
|
|
outb(_PNP_ADDRESS, PNP_STATUS);
|
|
for (j = 0; j < 100; j++) {
|
|
if ((inb((pnp_rd_port << 2) | 0x3)) & 0x1)
|
|
break;
|
|
DELAY(1);
|
|
}
|
|
if (j == 100) {
|
|
printf("PnP device failed to report resource data\n");
|
|
return count;
|
|
}
|
|
outb(_PNP_ADDRESS, PNP_RESOURCE_DATA);
|
|
temp = inb((pnp_rd_port << 2) | 0x3);
|
|
if (buffer != NULL)
|
|
buffer[i] = temp;
|
|
count++;
|
|
}
|
|
return count;
|
|
}
|
|
|
|
#if 0
|
|
/*
|
|
* write_pnp_parms initializes a logical device with the parms
|
|
* in d, and then activates the board if the last parameter is 1.
|
|
*/
|
|
|
|
static int
|
|
write_pnp_parms(struct pnp_cinfo *d, pnp_id *p, int ldn)
|
|
{
|
|
int i, empty = -1 ;
|
|
|
|
pnp_write (SET_LDN, ldn );
|
|
i = pnp_read(SET_LDN) ;
|
|
if (i != ldn) {
|
|
printf("Warning: LDN %d does not exist\n", ldn);
|
|
}
|
|
for (i = 0; i < 8; i++) {
|
|
pnp_write(IO_CONFIG_BASE + i * 2, d->ic_port[i] >> 8 );
|
|
pnp_write(IO_CONFIG_BASE + i * 2 + 1, d->ic_port[i] & 0xff );
|
|
}
|
|
for (i = 0; i < 4; i++) {
|
|
pnp_write(MEM_CONFIG + i*8, (d->ic_mem[i].base >> 16) & 0xff );
|
|
pnp_write(MEM_CONFIG + i*8+1, (d->ic_mem[i].base >> 8) & 0xff );
|
|
pnp_write(MEM_CONFIG + i*8+2, d->ic_mem[i].control & 0xff );
|
|
pnp_write(MEM_CONFIG + i*8+3, (d->ic_mem[i].range >> 16) & 0xff );
|
|
pnp_write(MEM_CONFIG + i*8+4, (d->ic_mem[i].range >> 8) & 0xff );
|
|
}
|
|
for (i = 0; i < 2; i++) {
|
|
pnp_write(IRQ_CONFIG + i*2 , d->irq[i] );
|
|
pnp_write(IRQ_CONFIG + i*2 + 1, d->irq_type[i] );
|
|
pnp_write(DRQ_CONFIG + i, d->drq[i] );
|
|
}
|
|
/*
|
|
* store parameters read into the current kernel
|
|
* so manual editing next time is easier
|
|
*/
|
|
for (i = 0 ; i < MAX_PNP_LDN; i++) {
|
|
if (pnp_ldn_overrides[i].csn == d->csn &&
|
|
pnp_ldn_overrides[i].ldn == ldn) {
|
|
d->flags = pnp_ldn_overrides[i].flags ;
|
|
pnp_ldn_overrides[i] = *d ;
|
|
break ;
|
|
} else if (pnp_ldn_overrides[i].csn < 1 ||
|
|
pnp_ldn_overrides[i].csn == 255)
|
|
empty = i ;
|
|
}
|
|
if (i== MAX_PNP_LDN && empty != -1)
|
|
pnp_ldn_overrides[empty] = *d;
|
|
|
|
/*
|
|
* Here should really perform the range check, and
|
|
* return a failure if not successful.
|
|
*/
|
|
pnp_write (IO_RANGE_CHECK, 0);
|
|
DELAY(1000); /* XXX is it really necessary ? */
|
|
pnp_write (ACTIVATE, d->enable ? 1 : 0);
|
|
DELAY(1000); /* XXX is it really necessary ? */
|
|
return 1 ;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* This function is called after the bus has assigned resource
|
|
* locations for a logical device.
|
|
*/
|
|
static void
|
|
pnp_set_config(void *arg, struct isa_config *config, int enable)
|
|
{
|
|
int csn = ((struct pnp_set_config_arg *) arg)->csn;
|
|
int ldn = ((struct pnp_set_config_arg *) arg)->ldn;
|
|
int i;
|
|
|
|
/*
|
|
* First put all cards into Sleep state with the initiation
|
|
* key, then put our card into Config state.
|
|
*/
|
|
pnp_send_initiation_key();
|
|
pnp_write(PNP_WAKE, csn);
|
|
|
|
/*
|
|
* Select our logical device so that we can program it.
|
|
*/
|
|
pnp_write(PNP_SET_LDN, ldn);
|
|
|
|
/*
|
|
* Constrain the number of resources we will try to program
|
|
*/
|
|
if (config->ic_nmem > ISA_PNP_NMEM) {
|
|
printf("too many ISA memory ranges (%d > %d)\n", config->ic_nmem, ISA_PNP_NMEM);
|
|
config->ic_nmem = ISA_PNP_NMEM;
|
|
}
|
|
if (config->ic_nport > ISA_PNP_NPORT) {
|
|
printf("too many ISA I/O ranges (%d > %d)\n", config->ic_nport, ISA_PNP_NPORT);
|
|
config->ic_nport = ISA_PNP_NPORT;
|
|
}
|
|
if (config->ic_nirq > ISA_PNP_NIRQ) {
|
|
printf("too many ISA IRQs (%d > %d)\n", config->ic_nirq, ISA_PNP_NIRQ);
|
|
config->ic_nirq = ISA_PNP_NIRQ;
|
|
}
|
|
if (config->ic_ndrq > ISA_PNP_NDRQ) {
|
|
printf("too many ISA DRQs (%d > %d)\n", config->ic_ndrq, ISA_PNP_NDRQ);
|
|
config->ic_ndrq = ISA_PNP_NDRQ;
|
|
}
|
|
|
|
/*
|
|
* Now program the resources.
|
|
*/
|
|
for (i = 0; i < config->ic_nmem; i++) {
|
|
u_int32_t start = config->ic_mem[i].ir_start;
|
|
u_int32_t size = config->ic_mem[i].ir_size;
|
|
if (start & 0xff)
|
|
panic("pnp_set_config: bogus memory assignment");
|
|
pnp_write(PNP_MEM_BASE_HIGH(i), (start >> 16) & 0xff);
|
|
pnp_write(PNP_MEM_BASE_LOW(i), (start >> 8) & 0xff);
|
|
pnp_write(PNP_MEM_RANGE_HIGH(i), (size >> 16) & 0xff);
|
|
pnp_write(PNP_MEM_RANGE_LOW(i), (size >> 8) & 0xff);
|
|
}
|
|
for (; i < ISA_PNP_NMEM; i++) {
|
|
pnp_write(PNP_MEM_BASE_HIGH(i), 0);
|
|
pnp_write(PNP_MEM_BASE_LOW(i), 0);
|
|
pnp_write(PNP_MEM_RANGE_HIGH(i), 0);
|
|
pnp_write(PNP_MEM_RANGE_LOW(i), 0);
|
|
}
|
|
|
|
for (i = 0; i < config->ic_nport; i++) {
|
|
u_int32_t start = config->ic_port[i].ir_start;
|
|
pnp_write(PNP_IO_BASE_HIGH(i), (start >> 8) & 0xff);
|
|
pnp_write(PNP_IO_BASE_LOW(i), (start >> 0) & 0xff);
|
|
}
|
|
for (; i < ISA_PNP_NPORT; i++) {
|
|
pnp_write(PNP_IO_BASE_HIGH(i), 0);
|
|
pnp_write(PNP_IO_BASE_LOW(i), 0);
|
|
}
|
|
|
|
for (i = 0; i < config->ic_nirq; i++) {
|
|
int irq = ffs(config->ic_irqmask[i]) - 1;
|
|
pnp_write(PNP_IRQ_LEVEL(i), irq);
|
|
pnp_write(PNP_IRQ_TYPE(i), 2); /* XXX */
|
|
}
|
|
for (; i < ISA_PNP_NIRQ; i++) {
|
|
/*
|
|
* IRQ 0 is not a valid interrupt selection and
|
|
* represents no interrupt selection.
|
|
*/
|
|
pnp_write(PNP_IRQ_LEVEL(i), 0);
|
|
}
|
|
|
|
for (i = 0; i < config->ic_ndrq; i++) {
|
|
int drq = ffs(config->ic_drqmask[i]) - 1;
|
|
pnp_write(PNP_DMA_CHANNEL(i), drq);
|
|
}
|
|
for (; i < ISA_PNP_NDRQ; i++) {
|
|
/*
|
|
* DMA channel 4, the cascade channel is used to
|
|
* indicate no DMA channel is active.
|
|
*/
|
|
pnp_write(PNP_DMA_CHANNEL(i), 4);
|
|
}
|
|
|
|
pnp_write(PNP_ACTIVATE, enable ? 1 : 0);
|
|
|
|
/*
|
|
* Wake everyone up again, we are finished.
|
|
*/
|
|
pnp_write(PNP_CONFIG_CONTROL, PNP_CONFIG_CONTROL_WAIT_FOR_KEY);
|
|
}
|
|
|
|
/*
|
|
* Process quirks for a logical device.. The card must be in Config state.
|
|
*/
|
|
void
|
|
pnp_check_quirks(u_int32_t vendor_id, u_int32_t logical_id, int ldn, struct isa_config *config)
|
|
{
|
|
struct pnp_quirk *qp;
|
|
|
|
for (qp = &pnp_quirks[0]; qp->vendor_id; qp++) {
|
|
if (qp->vendor_id == vendor_id
|
|
&& (qp->logical_id == 0
|
|
|| qp->logical_id == logical_id)) {
|
|
switch (qp->type) {
|
|
case PNP_QUIRK_WRITE_REG:
|
|
pnp_write(PNP_SET_LDN, ldn);
|
|
pnp_write(qp->arg1, qp->arg2);
|
|
break;
|
|
case PNP_QUIRK_EXTRA_IO:
|
|
if (config == NULL)
|
|
break;
|
|
if (qp->arg1 != 0) {
|
|
config->ic_nport++;
|
|
config->ic_port[config->ic_nport - 1] = config->ic_port[0];
|
|
config->ic_port[config->ic_nport - 1].ir_start += qp->arg1;
|
|
config->ic_port[config->ic_nport - 1].ir_end += qp->arg1;
|
|
}
|
|
if (qp->arg2 != 0) {
|
|
config->ic_nport++;
|
|
config->ic_port[config->ic_nport - 1] = config->ic_port[0];
|
|
config->ic_port[config->ic_nport - 1].ir_start += qp->arg2;
|
|
config->ic_port[config->ic_nport - 1].ir_end += qp->arg2;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Scan Resource Data for Logical Devices.
|
|
*
|
|
* This function exits as soon as it gets an error reading *ANY*
|
|
* Resource Data or it reaches the end of Resource Data. In the first
|
|
* case the return value will be TRUE, FALSE otherwise.
|
|
*/
|
|
static int
|
|
pnp_create_devices(device_t parent, pnp_id *p, int csn,
|
|
u_char *resources, int len)
|
|
{
|
|
u_char tag, *resp, *resinfo, *startres = 0;
|
|
int large_len, scanning = len, retval = FALSE;
|
|
u_int32_t logical_id;
|
|
u_int32_t compat_id;
|
|
device_t dev = 0;
|
|
int ldn = 0;
|
|
struct pnp_set_config_arg *csnldn;
|
|
char buf[100];
|
|
char *desc = 0;
|
|
|
|
resp = resources;
|
|
while (scanning > 0) {
|
|
tag = *resp++;
|
|
scanning--;
|
|
if (PNP_RES_TYPE(tag) != 0) {
|
|
/* Large resource */
|
|
if (scanning < 2) {
|
|
scanning = 0;
|
|
continue;
|
|
}
|
|
large_len = resp[0] + (resp[1] << 8);
|
|
resp += 2;
|
|
|
|
if (scanning < large_len) {
|
|
scanning = 0;
|
|
continue;
|
|
}
|
|
resinfo = resp;
|
|
resp += large_len;
|
|
scanning -= large_len;
|
|
|
|
if (PNP_LRES_NUM(tag) == PNP_TAG_ID_ANSI) {
|
|
if (large_len > sizeof(buf) - 1)
|
|
large_len = sizeof(buf) - 1;
|
|
bcopy(resinfo, buf, large_len);
|
|
|
|
/*
|
|
* Trim trailing spaces.
|
|
*/
|
|
while (buf[large_len-1] == ' ')
|
|
large_len--;
|
|
buf[large_len] = '\0';
|
|
desc = buf;
|
|
if (dev)
|
|
device_set_desc_copy(dev, desc);
|
|
continue;
|
|
}
|
|
|
|
continue;
|
|
}
|
|
|
|
/* Small resource */
|
|
if (scanning < PNP_SRES_LEN(tag)) {
|
|
scanning = 0;
|
|
continue;
|
|
}
|
|
resinfo = resp;
|
|
resp += PNP_SRES_LEN(tag);
|
|
scanning -= PNP_SRES_LEN(tag);;
|
|
|
|
switch (PNP_SRES_NUM(tag)) {
|
|
case PNP_TAG_LOGICAL_DEVICE:
|
|
/*
|
|
* Parse the resources for the previous
|
|
* logical device (if any).
|
|
*/
|
|
if (startres) {
|
|
pnp_parse_resources(dev, startres,
|
|
resinfo - startres - 1,
|
|
p->vendor_id, logical_id, ldn);
|
|
dev = 0;
|
|
startres = 0;
|
|
}
|
|
|
|
/*
|
|
* A new logical device. Scan for end of
|
|
* resources.
|
|
*/
|
|
bcopy(resinfo, &logical_id, 4);
|
|
pnp_check_quirks(p->vendor_id, logical_id, ldn, NULL);
|
|
compat_id = 0;
|
|
dev = BUS_ADD_CHILD(parent, ISA_ORDER_PNP, NULL, -1);
|
|
if (desc)
|
|
device_set_desc_copy(dev, desc);
|
|
isa_set_vendorid(dev, p->vendor_id);
|
|
isa_set_serial(dev, p->serial);
|
|
isa_set_logicalid(dev, logical_id);
|
|
csnldn = malloc(sizeof *csnldn, M_DEVBUF, M_NOWAIT);
|
|
if (!csnldn) {
|
|
device_printf(parent,
|
|
"out of memory\n");
|
|
scanning = 0;
|
|
break;
|
|
}
|
|
csnldn->csn = csn;
|
|
csnldn->ldn = ldn;
|
|
ISA_SET_CONFIG_CALLBACK(parent, dev,
|
|
pnp_set_config, csnldn);
|
|
ldn++;
|
|
startres = resp;
|
|
break;
|
|
|
|
case PNP_TAG_END:
|
|
if (!startres) {
|
|
device_printf(parent,
|
|
"malformed resources\n");
|
|
scanning = 0;
|
|
break;
|
|
}
|
|
pnp_parse_resources(dev, startres,
|
|
resinfo - startres - 1,
|
|
p->vendor_id, logical_id, ldn);
|
|
dev = 0;
|
|
startres = 0;
|
|
scanning = 0;
|
|
break;
|
|
|
|
default:
|
|
/* Skip this resource */
|
|
break;
|
|
}
|
|
}
|
|
|
|
return retval;
|
|
}
|
|
|
|
/*
|
|
* Read 'amount' bytes of resources from the card, allocating memory
|
|
* as needed. If a buffer is already available, it should be passed in
|
|
* '*resourcesp' and its length in '*spacep'. The number of resource
|
|
* bytes already in the buffer should be passed in '*lenp'. The memory
|
|
* allocated will be returned in '*resourcesp' with its size and the
|
|
* number of bytes of resources in '*spacep' and '*lenp' respectively.
|
|
*/
|
|
static int
|
|
pnp_read_bytes(int amount, u_char **resourcesp, int *spacep, int *lenp)
|
|
{
|
|
u_char *resources = *resourcesp;
|
|
u_char *newres;
|
|
int space = *spacep;
|
|
int len = *lenp;
|
|
|
|
if (space == 0) {
|
|
space = 1024;
|
|
resources = malloc(space, M_TEMP, M_NOWAIT);
|
|
if (!resources)
|
|
return ENOMEM;
|
|
}
|
|
|
|
if (len + amount > space) {
|
|
int extra = 1024;
|
|
while (len + amount > space + extra)
|
|
extra += 1024;
|
|
newres = malloc(space + extra, M_TEMP, M_NOWAIT);
|
|
if (!newres)
|
|
return ENOMEM;
|
|
bcopy(resources, newres, len);
|
|
free(resources, M_TEMP);
|
|
resources = newres;
|
|
space += extra;
|
|
}
|
|
|
|
if (pnp_get_resource_info(resources + len, amount) != amount)
|
|
return EINVAL;
|
|
len += amount;
|
|
|
|
*resourcesp = resources;
|
|
*spacep = space;
|
|
*lenp = len;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Read all resources from the card, allocating memory as needed. If a
|
|
* buffer is already available, it should be passed in '*resourcesp'
|
|
* and its length in '*spacep'. The memory allocated will be returned
|
|
* in '*resourcesp' with its size and the number of bytes of resources
|
|
* in '*spacep' and '*lenp' respectively.
|
|
*/
|
|
static int
|
|
pnp_read_resources(u_char **resourcesp, int *spacep, int *lenp)
|
|
{
|
|
u_char *resources = *resourcesp;
|
|
int space = *spacep;
|
|
int len = 0;
|
|
int error, done;
|
|
u_char tag;
|
|
|
|
error = 0;
|
|
done = 0;
|
|
while (!done) {
|
|
error = pnp_read_bytes(1, &resources, &space, &len);
|
|
if (error)
|
|
goto out;
|
|
tag = resources[len-1];
|
|
if (PNP_RES_TYPE(tag) == 0) {
|
|
/*
|
|
* Small resource, read contents.
|
|
*/
|
|
error = pnp_read_bytes(PNP_SRES_LEN(tag),
|
|
&resources, &space, &len);
|
|
if (error)
|
|
goto out;
|
|
if (PNP_SRES_NUM(tag) == PNP_TAG_END)
|
|
done = 1;
|
|
} else {
|
|
/*
|
|
* Large resource, read length and contents.
|
|
*/
|
|
error = pnp_read_bytes(2, &resources, &space, &len);
|
|
if (error)
|
|
goto out;
|
|
error = pnp_read_bytes(resources[len-2]
|
|
+ (resources[len-1] << 8),
|
|
&resources, &space, &len);
|
|
if (error)
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
out:
|
|
*resourcesp = resources;
|
|
*spacep = space;
|
|
*lenp = len;
|
|
return error;
|
|
}
|
|
|
|
/*
|
|
* Run the isolation protocol. Use pnp_rd_port as the READ_DATA port
|
|
* value (caller should try multiple READ_DATA locations before giving
|
|
* up). Upon exiting, all cards are aware that they should use
|
|
* pnp_rd_port as the READ_DATA port.
|
|
*
|
|
* In the first pass, a csn is assigned to each board and pnp_id's
|
|
* are saved to an array, pnp_devices. In the second pass, each
|
|
* card is woken up and the device configuration is called.
|
|
*/
|
|
static int
|
|
pnp_isolation_protocol(device_t parent)
|
|
{
|
|
int csn;
|
|
pnp_id id;
|
|
int found = 0, len;
|
|
u_char *resources = 0;
|
|
int space = 0;
|
|
int error;
|
|
|
|
/*
|
|
* Put all cards into the Sleep state so that we can clear
|
|
* their CSNs.
|
|
*/
|
|
pnp_send_initiation_key();
|
|
|
|
/*
|
|
* Clear the CSN for all cards.
|
|
*/
|
|
pnp_write(PNP_CONFIG_CONTROL, PNP_CONFIG_CONTROL_RESET_CSN);
|
|
|
|
/*
|
|
* Move all cards to the Isolation state.
|
|
*/
|
|
pnp_write(PNP_WAKE, 0);
|
|
|
|
/*
|
|
* Tell them where the read point is going to be this time.
|
|
*/
|
|
pnp_write(PNP_SET_RD_DATA, pnp_rd_port);
|
|
|
|
for (csn = 1; csn < PNP_MAX_CARDS; csn++) {
|
|
/*
|
|
* Start the serial isolation protocol.
|
|
*/
|
|
outb(_PNP_ADDRESS, PNP_SERIAL_ISOLATION);
|
|
DELAY(1000); /* Delay 1 msec */
|
|
|
|
if (pnp_get_serial(&id)) {
|
|
/*
|
|
* We have read the id from a card
|
|
* successfully. The card which won the
|
|
* isolation protocol will be in Isolation
|
|
* mode and all others will be in Sleep.
|
|
* Program the CSN of the isolated card
|
|
* (taking it to Config state) and read its
|
|
* resources, creating devices as we find
|
|
* logical devices on the card.
|
|
*/
|
|
pnp_write(PNP_SET_CSN, csn);
|
|
error = pnp_read_resources(&resources,
|
|
&space,
|
|
&len);
|
|
if (error)
|
|
break;
|
|
pnp_create_devices(parent, &id, csn,
|
|
resources, len);
|
|
found++;
|
|
} else
|
|
break;
|
|
|
|
/*
|
|
* Put this card back to the Sleep state and
|
|
* simultaneously move all cards which don't have a
|
|
* CSN yet to Isolation state.
|
|
*/
|
|
pnp_write(PNP_WAKE, 0);
|
|
}
|
|
|
|
/*
|
|
* Unless we have chosen the wrong read port, all cards will
|
|
* be in Sleep state. Put them back into WaitForKey for
|
|
* now. Their resources will be programmed later.
|
|
*/
|
|
pnp_write(PNP_CONFIG_CONTROL, PNP_CONFIG_CONTROL_WAIT_FOR_KEY);
|
|
|
|
/*
|
|
* Cleanup.
|
|
*/
|
|
if (resources)
|
|
free(resources, M_TEMP);
|
|
|
|
return found;
|
|
}
|
|
|
|
|
|
/*
|
|
* pnp_identify()
|
|
*
|
|
* autoconfiguration of pnp devices. This routine just runs the
|
|
* isolation protocol over several ports, until one is successful.
|
|
*
|
|
* may be called more than once ?
|
|
*
|
|
*/
|
|
|
|
static void
|
|
pnp_identify(driver_t *driver, device_t parent)
|
|
{
|
|
int num_pnp_devs;
|
|
|
|
#if 0
|
|
if (pnp_ldn_overrides[0].csn == 0) {
|
|
if (bootverbose)
|
|
printf("Initializing PnP override table\n");
|
|
bzero (pnp_ldn_overrides, sizeof(pnp_ldn_overrides));
|
|
pnp_ldn_overrides[0].csn = 255 ;
|
|
}
|
|
#endif
|
|
|
|
/* Try various READ_DATA ports from 0x203-0x3ff */
|
|
for (pnp_rd_port = 0x80; (pnp_rd_port < 0xff); pnp_rd_port += 0x10) {
|
|
if (bootverbose)
|
|
printf("Trying Read_Port at %x\n", (pnp_rd_port << 2) | 0x3);
|
|
|
|
num_pnp_devs = pnp_isolation_protocol(parent);
|
|
if (num_pnp_devs)
|
|
break;
|
|
}
|
|
}
|
|
|
|
static device_method_t pnp_methods[] = {
|
|
/* Device interface */
|
|
DEVMETHOD(device_identify, pnp_identify),
|
|
|
|
{ 0, 0 }
|
|
};
|
|
|
|
static driver_t pnp_driver = {
|
|
"pnp",
|
|
pnp_methods,
|
|
1, /* no softc */
|
|
};
|
|
|
|
static devclass_t pnp_devclass;
|
|
|
|
DRIVER_MODULE(pnp, isa, pnp_driver, pnp_devclass, 0, 0);
|