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Export an interface for presetting the ISA PnP read port address.

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Make the EISA ID formatter generally available
This commit is contained in:
Mike Smith 1998-10-22 20:20:51 +00:00
parent ee99f351b1
commit 60edbabff6
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=40597
3 changed files with 75 additions and 44 deletions
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10
sys/boot/common/bootstrap.h
View File

@ -23,7 +23,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: bootstrap.h,v 1.13 1998/10/09 23:11:05 peter Exp $
* $Id: bootstrap.h,v 1.14 1998/10/21 20:07:04 msmith Exp $
*/
#include <sys/types.h>
@ -125,6 +125,14 @@ extern void pnp_addident(struct pnpinfo *pi, char *ident);
extern struct pnpinfo *pnp_allocinfo(void);
extern void pnp_freeinfo(struct pnpinfo *pi);
extern void pnp_addinfo(struct pnpinfo *pi);
extern char *pnp_eisaformat(u_int8_t *data);
/*
* < 0 - No ISA in system
* == 0 - Maybe ISA, search for read data port
* > 0 - ISA in system, value is read data port address
*/
extern int isapnp_readport;
/*
* Module metadata header.

85
sys/boot/common/isapnp.c
View File

@ -24,7 +24,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: isapnp.c,v 1.2 1998/09/26 01:29:13 msmith Exp $
* $Id: isapnp.c,v 1.3 1998/10/21 20:07:04 msmith Exp $
*/
/*
@ -47,7 +47,7 @@ static int isapnp_isolation_protocol(void);
static void isapnp_enumerate(void);
/* PnP read data port */
static int pnp_rd_port;
int isapnp_readport = 0;
#define _PNP_ID_LEN 9
@ -68,7 +68,7 @@ static u_char
isapnp_read(int d)
{
outb (_PNP_ADDRESS, d);
return (inb(3 | (pnp_rd_port <<2)));
return (inb(isapnp_readport));
}
/*
@ -104,11 +104,11 @@ isapnp_get_serial(u_int8_t *data)
bzero(data, _PNP_ID_LEN);
outb(_PNP_ADDRESS, SERIAL_ISOLATION);
for (i = 0; i < 72; i++) {
bit = inb((pnp_rd_port << 2) | 0x3) == 0x55;
bit = inb(isapnp_readport) == 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;
bit = (inb(isapnp_readport) == 0xaa) && bit;
delay(250); /* Delay 250 usec */
valid = valid || bit;
@ -125,27 +125,6 @@ isapnp_get_serial(u_int8_t *data)
return valid;
}
/*
* Format a pnp id as a string in standard ISA PnP format, AAAIIRR
* where 'AAA' is the EISA ID, II is the product ID and RR the revision ID.
*/
static char *
isapnp_format(u_int8_t *data)
{
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);
}
/*
* Fills the buffer with resource info from the device.
* Returns nonzero if the device fails to report
@ -159,7 +138,7 @@ isapnp_get_resource_info(u_int8_t *buffer, int len)
for (i = 0; i < len; i++) {
outb(_PNP_ADDRESS, STATUS);
for (j = 0; j < 100; j++) {
if ((inb((pnp_rd_port << 2) | 0x3)) & 0x1)
if ((inb(isapnp_readport)) & 0x1)
break;
delay(1);
}
@ -168,7 +147,7 @@ isapnp_get_resource_info(u_int8_t *buffer, int len)
return(1);
}
outb(_PNP_ADDRESS, RESOURCE_DATA);
temp = inb((pnp_rd_port << 2) | 0x3);
temp = inb(isapnp_readport);
if (buffer != NULL)
buffer[i] = temp;
}
@ -201,7 +180,7 @@ isapnp_scan_resdata(struct pnpinfo *pi)
/* Got a compatible device id resource */
if (isapnp_get_resource_info(resinfo, PNP_SRES_LEN(tag)))
return(1);
pnp_addident(pi, isapnp_format(resinfo));
pnp_addident(pi, pnp_eisaformat(resinfo));
case END_TAG:
return(0);
@ -248,10 +227,8 @@ isapnp_scan_resdata(struct pnpinfo *pi)
}
/*
* 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.
* Run the isolation protocol. Upon exiting, all cards are aware that
* they should use isapnp_readport as the READ_DATA port.
*/
static int
isapnp_isolation_protocol(void)
@ -269,7 +246,7 @@ isapnp_isolation_protocol(void)
for (csn = 1; ; csn++) {
/* Wake up cards without a CSN (ie. all of them) */
isapnp_write(WAKE, 0);
isapnp_write(SET_RD_DATA, pnp_rd_port);
isapnp_write(SET_RD_DATA, (isapnp_readport >> 2));
outb(_PNP_ADDRESS, SERIAL_ISOLATION);
delay(1000); /* Delay 1 msec */
@ -277,7 +254,7 @@ isapnp_isolation_protocol(void)
isapnp_write(SET_CSN, csn);
pi = pnp_allocinfo();
ndevs++;
pnp_addident(pi, isapnp_format(cardid));
pnp_addident(pi, pnp_eisaformat(cardid));
/* scan the card obtaining all the identifiers it holds */
if (isapnp_scan_resdata(pi)) {
pnp_freeinfo(pi); /* error getting data, ignore */
@ -305,14 +282,38 @@ isapnp_isolation_protocol(void)
static void
isapnp_enumerate(void)
{
int devs;
int pnp_rd_port;
/* Check for I/O port access */
if ((archsw.arch_isainb == NULL) || (archsw.arch_isaoutb == NULL))
return;
for (pnp_rd_port = 0x80; pnp_rd_port < 0xff; pnp_rd_port += 0x10) {
/*
* Validate a possibly-suggested read port value. If the autoscan failed
* last time, this will return us to autoscan mode again.
*/
if ((isapnp_readport > 0) &&
(((isapnp_readport < 0x203) ||
(isapnp_readport > 0x3ff) ||
(isapnp_readport & 0x3) != 0x3)))
/* invalid, go look for ourselves */
isapnp_readport = 0;
/* Look for something, quit when we find it */
if ((devs = isapnp_isolation_protocol()) > 0)
break;
if (isapnp_readport < 0) {
/* someone is telling us there is no ISA in the system */
return;
} else if (isapnp_readport > 0) {
/* Someone has told us where the port is/should be, or we found one last time */
isapnp_isolation_protocol();
} else {
/* No clues, look for it ourselves */
for (pnp_rd_port = 0x80; pnp_rd_port < 0xff; pnp_rd_port += 0x10) {
/* Look for something, quit when we find it */
isapnp_readport = (pnp_rd_port << 2) | 0x3;
if (isapnp_isolation_protocol() > 0)
break;
}
}
}

24
sys/boot/common/pnp.c
View File

@ -74,8 +74,8 @@ pnp_scan(int argc, char *argv[])
if (pi->pi_desc != NULL) {
pager_output(" : ");
pager_output(pi->pi_desc);
pager_output("\n");
}
pager_output("\n");
}
pager_close();
}
@ -355,3 +355,25 @@ pnp_addinfo(struct pnpinfo *pi)
STAILQ_INSERT_TAIL(&pnp_devices, pi, pi_link);
}
/*
* Format an EISA id as a string in standard ISA PnP format, AAAIIRR
* where 'AAA' is the EISA vendor ID, II is the product ID and RR the revision ID.
*/
char *
pnp_eisaformat(u_int8_t *data)
{
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);
}