611 lines
14 KiB
C
611 lines
14 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.
|
|
*
|
|
* $Id: pnpinfo.c,v 1.4 1999/05/04 16:59:42 luoqi Exp $
|
|
*/
|
|
|
|
#include <sys/time.h>
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <fcntl.h>
|
|
#include <string.h>
|
|
|
|
#include <machine/cpufunc.h>
|
|
|
|
#include <i386/isa/pnp.h>
|
|
|
|
#ifdef DEBUG
|
|
#define DEB(x) x
|
|
#else
|
|
#define DEB(x)
|
|
#endif
|
|
#define DDB(x) x
|
|
|
|
void
|
|
pnp_write(int d, u_char r)
|
|
{
|
|
outb (_PNP_ADDRESS, d);
|
|
outb (_PNP_WRITE_DATA, r);
|
|
}
|
|
|
|
/* The READ_DATA port that we are using currently */
|
|
static int rd_port;
|
|
|
|
u_char
|
|
pnp_read(int d)
|
|
{
|
|
outb(_PNP_ADDRESS, d);
|
|
return inb( (rd_port << 2) + 3) & 0xff;
|
|
}
|
|
|
|
u_short
|
|
pnp_readw(int d)
|
|
{
|
|
int c = pnp_read(d) << 8 ;
|
|
c |= pnp_read(d+1);
|
|
return c;
|
|
}
|
|
|
|
int logdevs=0;
|
|
|
|
void DELAY __P((int i));
|
|
void send_Initiation_LFSR();
|
|
int get_serial __P((u_char *data));
|
|
int get_resource_info __P((u_char *buffer, int len));
|
|
int handle_small_res __P((u_char *resinfo, int item, int len));
|
|
void handle_large_res __P((u_char *resinfo, int item, int len));
|
|
void dump_resdata __P((u_char *data, int csn));
|
|
int isolation_protocol();
|
|
|
|
|
|
/*
|
|
* DELAY does accurate delaying in user-space.
|
|
* This function busy-waits.
|
|
*/
|
|
void
|
|
DELAY (int i)
|
|
{
|
|
struct timeval t;
|
|
long start, stop;
|
|
|
|
i *= 4;
|
|
|
|
gettimeofday (&t, NULL);
|
|
start = t.tv_sec * 1000000 + t.tv_usec;
|
|
do {
|
|
gettimeofday (&t, NULL);
|
|
stop = t.tv_sec * 1000000 + t.tv_usec;
|
|
} while (start + i > stop);
|
|
}
|
|
|
|
|
|
/*
|
|
* Send Initiation LFSR as described in "Plug and Play ISA Specification,
|
|
* Intel May 94."
|
|
*/
|
|
void
|
|
send_Initiation_LFSR()
|
|
{
|
|
int cur, i;
|
|
|
|
pnp_write(CONFIG_CONTROL, 0x2);
|
|
|
|
/* Reset the LSFR */
|
|
outb(_PNP_ADDRESS, 0);
|
|
outb(_PNP_ADDRESS, 0); /* yes, we do need it twice! */
|
|
|
|
cur = 0x6a;
|
|
|
|
for (i = 0; i < 32; i++) {
|
|
outb(_PNP_ADDRESS, cur);
|
|
cur = (cur >> 1) | (((cur ^ (cur >> 1)) << 7) & 0xff);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Get the device's serial number. Returns 1 if the serial is valid.
|
|
*/
|
|
int
|
|
get_serial(u_char *data)
|
|
{
|
|
int i, bit, valid = 0, sum = 0x6a;
|
|
|
|
bzero(data, sizeof(char) * 9);
|
|
|
|
for (i = 0; i < 72; i++) {
|
|
bit = inb((rd_port << 2) | 0x3) == 0x55;
|
|
DELAY(250); /* Delay 250 usec */
|
|
|
|
/* Can't Short Circuit the next evaluation, so 'and' is last */
|
|
bit = (inb((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 0 if the device fails to report
|
|
*/
|
|
int
|
|
get_resource_info(u_char *buffer, int len)
|
|
{
|
|
int i, j;
|
|
|
|
for (i = 0; i < len; i++) {
|
|
outb(_PNP_ADDRESS, STATUS);
|
|
for (j = 0; j < 100; j++) {
|
|
if ((inb((rd_port << 2) | 0x3)) & 0x1)
|
|
break;
|
|
DELAY(1);
|
|
}
|
|
if (j == 100) {
|
|
printf("PnP device failed to report resource data\n");
|
|
return 0;
|
|
}
|
|
outb(_PNP_ADDRESS, RESOURCE_DATA);
|
|
buffer[i] = inb((rd_port << 2) | 0x3);
|
|
DEB(printf("--- get_resource_info: got 0x%02x\n",(unsigned)buffer[i]));
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
void
|
|
report_dma_info (x)
|
|
int x;
|
|
{
|
|
char *s1=NULL, *s2=NULL, *s3=NULL, *s4=NULL, *s5=NULL;
|
|
|
|
switch (x & 0x3) {
|
|
case 0:
|
|
s1="8-bit";
|
|
break;
|
|
case 1:
|
|
s1="8/16-bit";
|
|
break;
|
|
case 2:
|
|
s1="16-bit";
|
|
break;
|
|
#ifdef DIAGNOSTIC
|
|
case 3:
|
|
s1="Reserved";
|
|
break;
|
|
#endif
|
|
}
|
|
|
|
s2 = (x & 0x4) ? "bus master" : "not a bus master";
|
|
|
|
s3 = (x & 0x8) ? "count by byte" : "";
|
|
|
|
s4 = (x & 0x10) ? "count by word" : "";
|
|
|
|
switch ((x & 0x60) >> 5) {
|
|
case 0:
|
|
s5="Compatibility mode";
|
|
break;
|
|
case 1:
|
|
s5="Type A";
|
|
break;
|
|
case 2:
|
|
s5="Type B";
|
|
break;
|
|
case 3:
|
|
s5="Type F";
|
|
break;
|
|
}
|
|
printf("\t%s, %s, %s, %s, %s\n",s1,s2,s3,s4,s5);
|
|
}
|
|
|
|
|
|
void
|
|
report_memory_info (int x)
|
|
{
|
|
if (x & 0x1)
|
|
printf ("Memory Range: Writeable\n");
|
|
else
|
|
printf ("Memory Range: Not writeable (ROM)\n");
|
|
|
|
if (x & 0x2)
|
|
printf ("Memory Range: Read-cacheable, write-through\n");
|
|
else
|
|
printf ("Memory Range: Non-cacheable\n");
|
|
|
|
if (x & 0x4)
|
|
printf ("Memory Range: Decode supports high address\n");
|
|
else
|
|
printf ("Memory Range: Decode supports range length\n");
|
|
|
|
switch ((x & 0x18) >> 3) {
|
|
case 0:
|
|
printf ("Memory Range: 8-bit memory only\n");
|
|
break;
|
|
case 1:
|
|
printf ("Memory Range: 16-bit memory only\n");
|
|
break;
|
|
case 2:
|
|
printf ("Memory Range: 8-bit and 16-bit memory supported\n");
|
|
break;
|
|
#ifdef DIAGNOSTIC
|
|
case 3:
|
|
printf ("Memory Range: Reserved\n");
|
|
break;
|
|
#endif
|
|
}
|
|
|
|
if (x & 0x20)
|
|
printf ("Memory Range: Memory is shadowable\n");
|
|
else
|
|
printf ("Memory Range: Memory is not shadowable\n");
|
|
|
|
if (x & 0x40)
|
|
printf ("Memory Range: Memory is an expansion ROM\n");
|
|
else
|
|
printf ("Memory Range: Memory is not an expansion ROM\n");
|
|
|
|
#ifdef DIAGNOSTIC
|
|
if (x & 0x80)
|
|
printf ("Memory Range: Reserved (Device is brain-damaged)\n");
|
|
#endif
|
|
}
|
|
|
|
|
|
/*
|
|
* Small Resource Tag Handler
|
|
*
|
|
* Returns 1 if checksum was valid (and an END_TAG was received).
|
|
* Returns -1 if checksum was invalid (and an END_TAG was received).
|
|
* Returns 0 for other tags.
|
|
*/
|
|
int
|
|
handle_small_res(u_char *resinfo, int item, int len)
|
|
{
|
|
int i;
|
|
|
|
DEB(printf("*** ITEM 0x%04x len %d detected\n", item, len));
|
|
|
|
switch (item) {
|
|
default:
|
|
printf("*** ITEM 0x%02x detected\n", item);
|
|
break;
|
|
case PNP_VERSION:
|
|
printf("PnP Version %d.%d, Vendor Version %d\n",
|
|
resinfo[0] >> 4, resinfo[0] & (0xf), resinfo[1]);
|
|
break;
|
|
case LOG_DEVICE_ID:
|
|
printf("\nLogical Device ID: %c%c%c%02x%02x 0x%08x #%d\n",
|
|
((resinfo[0] & 0x7c) >> 2) + 64,
|
|
(((resinfo[0] & 0x03) << 3) |
|
|
((resinfo[1] & 0xe0) >> 5)) + 64,
|
|
(resinfo[1] & 0x1f) + 64,
|
|
resinfo[2], resinfo[3], *(int *)(resinfo),
|
|
logdevs++);
|
|
|
|
if (resinfo[4] & 0x1)
|
|
printf ("\tDevice powers up active\n"); /* XXX */
|
|
if (resinfo[4] & 0x2)
|
|
printf ("\tDevice supports I/O Range Check\n");
|
|
if (resinfo[4] > 0x3)
|
|
printf ("\tReserved register funcs %02x\n",
|
|
resinfo[4]);
|
|
|
|
if (len == 6)
|
|
printf("\tVendor register funcs %02x\n", resinfo[5]);
|
|
break;
|
|
case COMP_DEVICE_ID:
|
|
printf("Compatible Device ID: %c%c%c%02x%02x (%08x)\n",
|
|
((resinfo[0] & 0x7c) >> 2) + 64,
|
|
(((resinfo[0] & 0x03) << 3) |
|
|
((resinfo[1] & 0xe0) >> 5)) + 64,
|
|
(resinfo[1] & 0x1f) + 64,
|
|
resinfo[2], resinfo[3], *(int *)resinfo);
|
|
break;
|
|
case IRQ_FORMAT:
|
|
printf(" IRQ: ");
|
|
|
|
for (i = 0; i < 8; i++)
|
|
if (resinfo[0] & (1<<i))
|
|
printf("%d ", i);
|
|
for (i = 0; i < 8; i++)
|
|
if (resinfo[1] & (1<<i))
|
|
printf("%d ", i + 8);
|
|
if (len == 3) {
|
|
if (resinfo[2] & 0x1)
|
|
printf("IRQ: High true edge sensitive\n");
|
|
if (resinfo[2] & 0x2)
|
|
printf("IRQ: Low true edge sensitive\n");
|
|
if (resinfo[2] & 0x4)
|
|
printf("IRQ: High true level sensitive\n");
|
|
if (resinfo[2] & 0x8)
|
|
printf("IRQ: Low true level sensitive\n");
|
|
} else {
|
|
printf(" - only one type (true/edge)\n");
|
|
}
|
|
break;
|
|
case DMA_FORMAT:
|
|
printf(" DMA: channel(s) ");
|
|
for (i = 0; i < 8; i++)
|
|
if (resinfo[0] & (1<<i))
|
|
printf("%d ", i);
|
|
printf ("\n");
|
|
report_dma_info (resinfo[1]);
|
|
break;
|
|
case START_DEPEND_FUNC:
|
|
printf("TAG Start DF\n");
|
|
if (len == 1) {
|
|
switch (resinfo[0]) {
|
|
case 0:
|
|
printf("Good Configuration\n");
|
|
break;
|
|
case 1:
|
|
printf("Acceptable Configuration\n");
|
|
break;
|
|
case 2:
|
|
printf("Sub-optimal Configuration\n");
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
case END_DEPEND_FUNC:
|
|
printf("TAG End DF\n");
|
|
break;
|
|
case IO_PORT_DESC:
|
|
printf(" I/O Range 0x%x .. 0x%x, alignment 0x%x, len 0x%x\n",
|
|
resinfo[1] + (resinfo[2] << 8),
|
|
resinfo[3] + (resinfo[4] << 8),
|
|
resinfo[5], resinfo[6] );
|
|
if (resinfo[0])
|
|
printf("\t[16-bit addr]\n");
|
|
else
|
|
printf("\t[not 16-bit addr]\n");
|
|
break;
|
|
case FIXED_IO_PORT_DESC:
|
|
printf (" FIXED I/O base address 0x%x length 0x%x\n",
|
|
resinfo[0] + ( (resinfo[1] & 3 ) << 8), /* XXX */
|
|
resinfo[2]);
|
|
break;
|
|
#ifdef DIAGNOSTIC
|
|
case SM_RES_RESERVED:
|
|
printf("Reserved Tag Detected\n");
|
|
break;
|
|
#endif
|
|
case SM_VENDOR_DEFINED:
|
|
printf("*** Small Vendor Tag Detected\n");
|
|
break;
|
|
case END_TAG:
|
|
printf("End Tag\n\n");
|
|
/* XXX Record and Verify Checksum */
|
|
return 1;
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
void
|
|
handle_large_res(u_char *resinfo, int item, int len)
|
|
{
|
|
int i;
|
|
|
|
DEB(printf("*** Large ITEM %d len %d found\n", item, len));
|
|
switch (item) {
|
|
case MEMORY_RANGE_DESC:
|
|
report_memory_info(resinfo[0]);
|
|
printf("Memory range minimum address: 0x%x\n",
|
|
(resinfo[1] << 8) + (resinfo[2] << 16));
|
|
printf("Memory range maximum address: 0x%x\n",
|
|
(resinfo[3] << 8) + (resinfo[4] << 16));
|
|
printf("Memory range base alignment: 0x%x\n",
|
|
(i = (resinfo[5] + (resinfo[6] << 8))) ? i : (1 << 16));
|
|
printf("Memory range length: 0x%x\n",
|
|
(resinfo[7] + (resinfo[8] << 8)) * 256);
|
|
break;
|
|
case ID_STRING_ANSI:
|
|
printf("Device Description: ");
|
|
|
|
for (i = 0; i < len; i++) {
|
|
if (resinfo[i]) /* XXX */
|
|
printf("%c", resinfo[i]);
|
|
}
|
|
printf("\n");
|
|
break;
|
|
case ID_STRING_UNICODE:
|
|
printf("ID String Unicode Detected (Undefined)\n");
|
|
break;
|
|
case LG_VENDOR_DEFINED:
|
|
printf("Large Vendor Defined Detected\n");
|
|
break;
|
|
case _32BIT_MEM_RANGE_DESC:
|
|
printf("32bit Memory Range Desc Unimplemented\n");
|
|
break;
|
|
case _32BIT_FIXED_LOC_DESC:
|
|
printf("32bit Fixed Location Desc Unimplemented\n");
|
|
break;
|
|
case LG_RES_RESERVED:
|
|
printf("Large Reserved Tag Detected\n");
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* Dump all the information about configurations.
|
|
*/
|
|
void
|
|
dump_resdata(u_char *data, int csn)
|
|
{
|
|
int i, large_len;
|
|
|
|
u_char tag, *resinfo;
|
|
|
|
DDB(printf("\nCard assigned CSN #%d\n", csn));
|
|
printf("Vendor ID %c%c%c%02x%02x (0x%08x), Serial Number 0x%08x\n",
|
|
((data[0] & 0x7c) >> 2) + 64,
|
|
(((data[0] & 0x03) << 3) | ((data[1] & 0xe0) >> 5)) + 64,
|
|
(data[1] & 0x1f) + 64, data[2], data[3],
|
|
*(int *)&(data[0]),
|
|
*(int *)&(data[4]));
|
|
|
|
pnp_write(SET_CSN, csn); /* Move this out of this function XXX */
|
|
outb(_PNP_ADDRESS, STATUS);
|
|
|
|
/* Allows up to 1kb of Resource Info, Should be plenty */
|
|
for (i = 0; i < 1024; i++) {
|
|
if (!get_resource_info(&tag, 1))
|
|
break;
|
|
|
|
if (PNP_RES_TYPE(tag) == 0) {
|
|
/* Handle small resouce data types */
|
|
|
|
resinfo = malloc(PNP_SRES_LEN(tag));
|
|
if (!get_resource_info(resinfo, PNP_SRES_LEN(tag)))
|
|
break;
|
|
|
|
if (handle_small_res(resinfo, PNP_SRES_NUM(tag), PNP_SRES_LEN(tag)) == 1)
|
|
break;
|
|
free(resinfo);
|
|
} else {
|
|
/* Handle large resouce data types */
|
|
u_char buf[2];
|
|
if (!get_resource_info((char *)buf, 2))
|
|
break;
|
|
large_len = (buf[1] << 8) + buf[0];
|
|
|
|
resinfo = malloc(large_len);
|
|
if (!get_resource_info(resinfo, large_len))
|
|
break;
|
|
|
|
handle_large_res(resinfo, PNP_LRES_NUM(tag), large_len);
|
|
free(resinfo);
|
|
}
|
|
}
|
|
printf("Successfully got %d resources, %d logical fdevs\n", i,
|
|
logdevs);
|
|
printf("-- card select # 0x%04x\n", pnp_read(SET_CSN));
|
|
printf("\nCSN %c%c%c%02x%02x (0x%08x), Serial Number 0x%08x\n",
|
|
((data[0] & 0x7c) >> 2) + 64,
|
|
(((data[0] & 0x03) << 3) | ((data[1] & 0xe0) >> 5)) + 64,
|
|
(data[1] & 0x1f) + 64, data[2], data[3],
|
|
*(int *)&(data[0]),
|
|
*(int *)&(data[4]));
|
|
|
|
for (i=0; i<logdevs; i++) {
|
|
int j;
|
|
|
|
pnp_write(SET_LDN, i);
|
|
|
|
printf("\nLogical device #%d\n", pnp_read(SET_LDN) );
|
|
printf("IO: ");
|
|
for (j=0; j<8; j++)
|
|
printf(" 0x%04x", pnp_readw(IO_CONFIG_BASE + j*2));
|
|
printf("\nIRQ %d %d\n",
|
|
pnp_read(IRQ_CONFIG), pnp_read(IRQ_CONFIG+2) );
|
|
printf("DMA %d %d\n",
|
|
pnp_read(DRQ_CONFIG), pnp_read(DRQ_CONFIG+1) );
|
|
printf("IO range check 0x%02x activate 0x%02x\n",
|
|
pnp_read(IO_RANGE_CHECK), pnp_read(ACTIVATE) );
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* Run the isolation protocol. Use 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 rd_port
|
|
* as the READ_DATA port;
|
|
*
|
|
*/
|
|
int
|
|
isolation_protocol()
|
|
{
|
|
int csn;
|
|
u_char data[9];
|
|
|
|
send_Initiation_LFSR();
|
|
|
|
/* Reset CSN for All Cards */
|
|
pnp_write(CONFIG_CONTROL, 0x04);
|
|
|
|
for (csn = 1; (csn < MAX_PNP_CARDS); csn++) {
|
|
/* Wake up cards without a CSN */
|
|
logdevs = 0 ;
|
|
pnp_write(WAKE, 0);
|
|
pnp_write(SET_RD_DATA, rd_port);
|
|
outb(_PNP_ADDRESS, SERIAL_ISOLATION);
|
|
DELAY(1000); /* Delay 1 msec */
|
|
|
|
if (get_serial(data))
|
|
dump_resdata(data, csn);
|
|
else
|
|
break;
|
|
}
|
|
return csn - 1;
|
|
}
|
|
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
int num_pnp_devs;
|
|
|
|
#ifdef __i386__
|
|
/* Hey what about a i386_iopl() call :) */
|
|
if (open("/dev/io", O_RDONLY) < 0) {
|
|
fprintf (stderr, "pnpinfo: Can't get I/O privilege.\n");
|
|
exit (1);
|
|
}
|
|
#endif
|
|
#ifdef __alpha__
|
|
ioperm(0x203, 0x400 - 0x203, 1);
|
|
#endif
|
|
|
|
printf("Checking for Plug-n-Play devices...\n");
|
|
|
|
/* Try various READ_DATA ports from 0x203-0x3ff */
|
|
for (rd_port = 0x80; (rd_port < 0xff); rd_port += 0x10) {
|
|
DEB(printf("Trying Read_Port at %x...\n", (rd_port << 2) | 0x3) );
|
|
num_pnp_devs = isolation_protocol(rd_port);
|
|
if (num_pnp_devs)
|
|
break;
|
|
}
|
|
if (!num_pnp_devs) {
|
|
printf("No Plug-n-Play devices were found\n");
|
|
return 0;
|
|
}
|
|
}
|