mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-21 11:13:30 +00:00
71705a23fc
- ppbus was released before checking if still in disk_mode by vpoio and immio: the microseq (in_disk_mode) was never executed. Fixed. - nlptintr() renamed to nlpt_intr(). spltty() inserted in nlptintr() before nlpt_intr() call
456 lines
9.8 KiB
C
456 lines
9.8 KiB
C
/*-
|
|
* Copyright (c) 1997, 1998 Nicolas Souchu
|
|
* 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: ppbconf.c,v 1.7 1998/09/13 18:26:26 nsouch Exp $
|
|
*
|
|
*/
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/malloc.h>
|
|
|
|
#include <vm/vm.h>
|
|
#include <vm/pmap.h>
|
|
|
|
#include <dev/ppbus/ppbconf.h>
|
|
#include <dev/ppbus/ppb_1284.h>
|
|
|
|
LIST_HEAD(, ppb_data) ppbdata; /* list of existing ppbus */
|
|
|
|
/*
|
|
* Add a null driver so that the linker set always exists.
|
|
*/
|
|
|
|
static struct ppb_driver nulldriver = {
|
|
NULL, NULL, "null"
|
|
};
|
|
DATA_SET(ppbdriver_set, nulldriver);
|
|
|
|
|
|
/*
|
|
* ppb_alloc_bus()
|
|
*
|
|
* Allocate area to store the ppbus description.
|
|
*/
|
|
struct ppb_data *
|
|
ppb_alloc_bus(void)
|
|
{
|
|
struct ppb_data *ppb;
|
|
static int ppbdata_initted = 0; /* done-init flag */
|
|
|
|
ppb = (struct ppb_data *) malloc(sizeof(struct ppb_data),
|
|
M_TEMP, M_NOWAIT);
|
|
|
|
/*
|
|
* Add the new parallel port bus to the list of existing ppbus.
|
|
*/
|
|
if (ppb) {
|
|
bzero(ppb, sizeof(struct ppb_data));
|
|
|
|
if (!ppbdata_initted) { /* list not initialised */
|
|
LIST_INIT(&ppbdata);
|
|
ppbdata_initted = 1;
|
|
}
|
|
LIST_INSERT_HEAD(&ppbdata, ppb, ppb_chain);
|
|
} else {
|
|
printf("ppb_alloc_bus: cannot malloc!\n");
|
|
}
|
|
return(ppb);
|
|
}
|
|
|
|
static char *pnp_tokens[] = {
|
|
"PRINTER", "MODEM", "NET", "HDC", "PCMCIA", "MEDIA",
|
|
"FDC", "PORTS", "SCANNER", "DIGICAM", "", NULL };
|
|
|
|
static char *pnp_classes[] = {
|
|
"printer", "modem", "network device",
|
|
"hard disk", "PCMCIA", "multimedia device",
|
|
"floppy disk", "ports", "scanner",
|
|
"digital camera", "unknown device", NULL };
|
|
|
|
/*
|
|
* search_token()
|
|
*
|
|
* Search the first occurence of a token within a string
|
|
*
|
|
* XXX should use strxxx() calls
|
|
*/
|
|
static char *
|
|
search_token(char *str, int slen, char *token)
|
|
{
|
|
char *p;
|
|
int tlen, i, j;
|
|
|
|
#define UNKNOWN_LENGTH -1
|
|
|
|
if (slen == UNKNOWN_LENGTH)
|
|
/* get string's length */
|
|
for (slen = 0, p = str; *p != '\0'; p++)
|
|
slen ++;
|
|
|
|
/* get token's length */
|
|
for (tlen = 0, p = token; *p != '\0'; p++)
|
|
tlen ++;
|
|
|
|
if (tlen == 0)
|
|
return (str);
|
|
|
|
for (i = 0; i <= slen-tlen; i++) {
|
|
for (j = 0; j < tlen; j++)
|
|
if (str[i+j] != token[j])
|
|
break;
|
|
if (j == tlen)
|
|
return (&str[i]);
|
|
}
|
|
|
|
return (NULL);
|
|
}
|
|
|
|
/*
|
|
* ppb_pnp_detect()
|
|
*
|
|
* Returns the class id. of the peripherial, -1 otherwise
|
|
*/
|
|
static int
|
|
ppb_pnp_detect(struct ppb_data *ppb)
|
|
{
|
|
char *token, *q, *class = 0;
|
|
int i, len, error;
|
|
int class_id = -1;
|
|
char str[PPB_PnP_STRING_SIZE+1];
|
|
struct ppb_device pnpdev; /* temporary device to perform I/O */
|
|
|
|
/* initialize the pnpdev structure for future use */
|
|
bzero(&pnpdev, sizeof(pnpdev));
|
|
|
|
pnpdev.ppb = ppb;
|
|
|
|
if (bootverbose)
|
|
printf("ppb: <PnP> probing devices on ppbus %d...\n",
|
|
ppb->ppb_link->adapter_unit);
|
|
|
|
if (ppb_request_bus(&pnpdev, PPB_DONTWAIT)) {
|
|
if (bootverbose)
|
|
printf("ppb: <PnP> cannot allocate ppbus!\n");
|
|
return (-1);
|
|
}
|
|
|
|
if ((error = ppb_1284_negociate(&pnpdev, NIBBLE_1284_REQUEST_ID))) {
|
|
if (bootverbose)
|
|
printf("ppb: <PnP> ppb_1284_negociate()=%d\n", error);
|
|
|
|
goto end_detect;
|
|
}
|
|
|
|
len = 0;
|
|
for (q=str; !(ppb_rstr(&pnpdev) & PERROR); q++) {
|
|
if ((error = nibble_1284_inbyte(&pnpdev, q))) {
|
|
if (bootverbose) {
|
|
*q = '\0';
|
|
printf("ppb: <PnP> len=%d, %s\n", len, str);
|
|
printf("ppb: <PnP> nibble_1284_inbyte()=%d\n",
|
|
error);
|
|
}
|
|
goto end_detect;
|
|
}
|
|
|
|
if (len++ >= PPB_PnP_STRING_SIZE) {
|
|
printf("ppb: <PnP> not space left!\n");
|
|
goto end_detect;
|
|
}
|
|
}
|
|
*q = '\0';
|
|
|
|
nibble_1284_sync(&pnpdev);
|
|
|
|
if (bootverbose) {
|
|
printf("ppb: <PnP> %d characters: ", len);
|
|
for (i = 0; i < len; i++)
|
|
printf("0x%x ", str[i]);
|
|
printf("\n");
|
|
}
|
|
|
|
/* replace ';' characters by '\0' */
|
|
for (i = 0; i < len; i++)
|
|
str[i] = (str[i] == ';') ? '\0' : str[i];
|
|
|
|
if ((token = search_token(str, len, "MFG")) != NULL)
|
|
printf("ppbus%d: <%s", ppb->ppb_link->adapter_unit,
|
|
search_token(token, UNKNOWN_LENGTH, ":") + 1);
|
|
else
|
|
printf("ppbus%d: <unknown", ppb->ppb_link->adapter_unit);
|
|
|
|
if ((token = search_token(str, len, "MDL")) != NULL)
|
|
printf(" %s",
|
|
search_token(token, UNKNOWN_LENGTH, ":") + 1);
|
|
else
|
|
printf(" unknown");
|
|
|
|
if ((token = search_token(str, len, "VER")) != NULL)
|
|
printf("/%s",
|
|
search_token(token, UNKNOWN_LENGTH, ":") + 1);
|
|
|
|
if ((token = search_token(str, len, "REV")) != NULL)
|
|
printf(".%s",
|
|
search_token(token, UNKNOWN_LENGTH, ":") + 1);
|
|
|
|
printf(">");
|
|
|
|
if ((token = search_token(str, len, "CLS")) != NULL) {
|
|
class = search_token(token, UNKNOWN_LENGTH, ":") + 1;
|
|
printf(" %s", class);
|
|
}
|
|
|
|
if ((token = search_token(str, len, "CMD")) != NULL)
|
|
printf(" %s",
|
|
search_token(token, UNKNOWN_LENGTH, ":") + 1);
|
|
|
|
printf("\n");
|
|
|
|
if (class)
|
|
/* identify class ident */
|
|
for (i = 0; pnp_tokens[i] != NULL; i++) {
|
|
if (search_token(class, len, pnp_tokens[i]) != NULL) {
|
|
class_id = i;
|
|
goto end_detect;
|
|
}
|
|
}
|
|
|
|
class_id = PPB_PnP_UNKNOWN;
|
|
|
|
end_detect:
|
|
if ((error = ppb_1284_terminate(&pnpdev, VALID_STATE)) && bootverbose)
|
|
printf("ppb: ppb_1284_terminate()=%d\n", error);
|
|
|
|
ppb_release_bus(&pnpdev);
|
|
return (class_id);
|
|
}
|
|
|
|
/*
|
|
* ppb_attachdevs()
|
|
*
|
|
* Called by ppcattach(), this function probes the ppbus and
|
|
* attaches found devices.
|
|
*/
|
|
int
|
|
ppb_attachdevs(struct ppb_data *ppb)
|
|
{
|
|
int error;
|
|
struct ppb_device *dev;
|
|
struct ppb_driver **p_drvpp, *p_drvp;
|
|
|
|
LIST_INIT(&ppb->ppb_devs); /* initialise device/driver list */
|
|
p_drvpp = (struct ppb_driver **)ppbdriver_set.ls_items;
|
|
|
|
/* XXX wait for ieee1284 good support */
|
|
#if 0
|
|
/* detect PnP devices */
|
|
ppb->class_id = ppb_pnp_detect(ppb);
|
|
#endif
|
|
|
|
/*
|
|
* Blindly try all probes here. Later we should look at
|
|
* the parallel-port PnP standard, and intelligently seek
|
|
* drivers based on configuration first.
|
|
*/
|
|
while ((p_drvp = *p_drvpp++) != NULL) {
|
|
if (p_drvp->probe && (dev = (p_drvp->probe(ppb))) != NULL) {
|
|
/*
|
|
* Add the device to the list of probed devices.
|
|
*/
|
|
LIST_INSERT_HEAD(&ppb->ppb_devs, dev, chain);
|
|
|
|
/* Call the device's attach routine */
|
|
(void)p_drvp->attach(dev);
|
|
}
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* ppb_next_bus()
|
|
*
|
|
* Return the next bus in ppbus queue
|
|
*/
|
|
struct ppb_data *
|
|
ppb_next_bus(struct ppb_data *ppb)
|
|
{
|
|
|
|
if (ppb == NULL)
|
|
return (ppbdata.lh_first);
|
|
|
|
return (ppb->ppb_chain.le_next);
|
|
}
|
|
|
|
/*
|
|
* ppb_lookup_bus()
|
|
*
|
|
* Get ppb_data structure pointer according to the base address of the ppbus
|
|
*/
|
|
struct ppb_data *
|
|
ppb_lookup_bus(int base_port)
|
|
{
|
|
struct ppb_data *ppb;
|
|
|
|
for (ppb = ppbdata.lh_first; ppb; ppb = ppb->ppb_chain.le_next)
|
|
if (ppb->ppb_link->base == base_port)
|
|
break;
|
|
|
|
return (ppb);
|
|
}
|
|
|
|
/*
|
|
* ppb_lookup_link()
|
|
*
|
|
* Get ppb_data structure pointer according to the unit value
|
|
* of the corresponding link structure
|
|
*/
|
|
struct ppb_data *
|
|
ppb_lookup_link(int unit)
|
|
{
|
|
struct ppb_data *ppb;
|
|
|
|
for (ppb = ppbdata.lh_first; ppb; ppb = ppb->ppb_chain.le_next)
|
|
if (ppb->ppb_link->adapter_unit == unit)
|
|
break;
|
|
|
|
return (ppb);
|
|
}
|
|
|
|
/*
|
|
* ppb_attach_device()
|
|
*
|
|
* Called by loadable kernel modules to add a device
|
|
*/
|
|
int
|
|
ppb_attach_device(struct ppb_device *dev)
|
|
{
|
|
struct ppb_data *ppb = dev->ppb;
|
|
|
|
/* add the device to the list of probed devices */
|
|
LIST_INSERT_HEAD(&ppb->ppb_devs, dev, chain);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* ppb_remove_device()
|
|
*
|
|
* Called by loadable kernel modules to remove a device
|
|
*/
|
|
void
|
|
ppb_remove_device(struct ppb_device *dev)
|
|
{
|
|
|
|
/* remove the device from the list of probed devices */
|
|
LIST_REMOVE(dev, chain);
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* ppb_request_bus()
|
|
*
|
|
* Allocate the device to perform transfers.
|
|
*
|
|
* how : PPB_WAIT or PPB_DONTWAIT
|
|
*/
|
|
int
|
|
ppb_request_bus(struct ppb_device *dev, int how)
|
|
{
|
|
int s, error = 0;
|
|
struct ppb_data *ppb = dev->ppb;
|
|
|
|
while (!error) {
|
|
s = splhigh();
|
|
if (ppb->ppb_owner) {
|
|
splx(s);
|
|
|
|
switch (how) {
|
|
case (PPB_WAIT | PPB_INTR):
|
|
error = tsleep(ppb, PPBPRI|PCATCH, "ppbreq", 0);
|
|
break;
|
|
|
|
case (PPB_WAIT | PPB_NOINTR):
|
|
error = tsleep(ppb, PPBPRI, "ppbreq", 0);
|
|
break;
|
|
|
|
default:
|
|
return (EWOULDBLOCK);
|
|
break;
|
|
}
|
|
|
|
} else {
|
|
ppb->ppb_owner = dev;
|
|
|
|
/* restore the context of the device
|
|
* The first time, ctx.valid is certainly false
|
|
* then do not change anything. This is usefull for
|
|
* drivers that do not set there operating mode
|
|
* during attachement
|
|
*/
|
|
if (dev->ctx.valid)
|
|
ppb_set_mode(dev, dev->ctx.mode);
|
|
|
|
splx(s);
|
|
return (0);
|
|
}
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* ppb_release_bus()
|
|
*
|
|
* Release the device allocated with ppb_request_dev()
|
|
*/
|
|
int
|
|
ppb_release_bus(struct ppb_device *dev)
|
|
{
|
|
int s;
|
|
struct ppb_data *ppb = dev->ppb;
|
|
|
|
s = splhigh();
|
|
if (ppb->ppb_owner != dev) {
|
|
splx(s);
|
|
return (EACCES);
|
|
}
|
|
|
|
ppb->ppb_owner = 0;
|
|
splx(s);
|
|
|
|
/* save the context of the device */
|
|
dev->ctx.mode = ppb_get_mode(dev);
|
|
|
|
/* ok, now the context of the device is valid */
|
|
dev->ctx.valid = 1;
|
|
|
|
/* wakeup waiting processes */
|
|
wakeup(ppb);
|
|
|
|
return (0);
|
|
}
|