658 lines
16 KiB
C
658 lines
16 KiB
C
/*
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* EISA bus probe and attach routines
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*
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* Copyright (c) 1995, 1996 Justin T. Gibbs.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice immediately at the beginning of the file, without modification,
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* this list of conditions, and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: eisaconf.c,v 1.33 1997/11/07 08:52:24 phk Exp $
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*/
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#include "opt_eisa.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <machine/limits.h>
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#include <i386/eisa/eisaconf.h>
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#include <sys/interrupt.h>
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struct eisa_device_node{
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struct eisa_device dev;
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struct eisa_device_node *next;
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};
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/*
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* This should probably be a list of "struct device" once it exists.
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* A struct device will incorperate ioconf and driver entry point data
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* regardless of how its attached to the system (via unions) as well
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* as more generic information that all device types should support (unit
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* number, if its installed, etc).
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*/
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static struct eisa_device_node *eisa_dev_list;
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static struct eisa_device_node **eisa_dev_list_tail = &eisa_dev_list;
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static u_long eisa_unit;
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static struct eisa_driver mainboard_drv = {
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"eisa",
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NULL,
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NULL,
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NULL,
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&eisa_unit
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};
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/*
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* Add the mainboard_drv to the eisa driver linkerset so that it is
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* defined even if no EISA drivers are linked into the kernel.
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*/
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DATA_SET (eisadriver_set, mainboard_drv);
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/*
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* Local function declarations and static variables
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*/
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static void eisa_reg_print __P((struct eisa_device *e_dev,
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char *string, char *separator));
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static int eisa_add_resvaddr __P((struct eisa_device *e_dev,
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struct resvlist *head, u_long base,
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u_long size, int flags));
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static int eisa_reg_resvaddr __P((struct eisa_device *e_dev,
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struct resvlist *head, resvaddr_t *resvaddr,
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int *reg_count));
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/*
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* Keep some state about what we've printed so far
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* to make probe output pretty.
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*/
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static struct {
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int in_registration;/* reg_start has been called */
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int num_interrupts;
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int num_ioaddrs;
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int num_maddrs;
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int column; /* How much we have output so far. */
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#define MAX_COL 80
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} reg_state;
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/* Global variable, so UserConfig can change it. */
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#ifndef EISA_SLOTS
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#define EISA_SLOTS 10 /* PCI clashes with higher ones.. fix later */
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#endif
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int num_eisa_slots = EISA_SLOTS;
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/*
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** probe for EISA devices
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*/
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void
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eisa_configure()
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{
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int i,slot;
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struct eisa_device_node *dev_node;
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struct eisa_driver **e_drvp;
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struct eisa_driver *e_drv;
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struct eisa_device *e_dev;
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int eisaBase = 0xc80;
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eisa_id_t eisa_id;
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e_drvp = (struct eisa_driver**)eisadriver_set.ls_items;
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for (slot = 0; slot < num_eisa_slots; eisaBase+=0x1000, slot++) {
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int id_size = sizeof(eisa_id);
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eisa_id = 0;
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for( i = 0; i < id_size; i++ ) {
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outb(eisaBase,0x80 + i); /*Some cards require priming*/
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eisa_id |= inb(eisaBase+i) << ((id_size-i-1)*CHAR_BIT);
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}
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if (eisa_id & 0x80000000)
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continue; /* no EISA card in slot */
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/* Prepare an eisa_device_node for this slot */
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dev_node = (struct eisa_device_node *)malloc(sizeof(*dev_node),
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M_DEVBUF, M_NOWAIT);
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if (!dev_node) {
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printf("eisa0: cannot malloc eisa_device_node");
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break; /* Try to attach what we have already */
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}
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bzero(dev_node, sizeof(*dev_node));
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e_dev = &(dev_node->dev);
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e_dev->id = eisa_id;
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e_dev->full_name = "Unattached Device";
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e_dev->ioconf.slot = slot;
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/* Initialize our lists of reserved addresses */
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LIST_INIT(&(e_dev->ioconf.ioaddrs));
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LIST_INIT(&(e_dev->ioconf.maddrs));
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TAILQ_INIT(&(e_dev->ioconf.irqs));
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*eisa_dev_list_tail = dev_node;
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eisa_dev_list_tail = &dev_node->next;
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}
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dev_node = eisa_dev_list;
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/*
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* "Attach" the system board
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*/
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/* The first will be the motherboard in a true EISA system */
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if (dev_node && (dev_node->dev.ioconf.slot == 0)) {
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char *idstring;
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e_dev = &dev_node->dev;
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e_dev->driver = &mainboard_drv;
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e_dev->unit = (*e_dev->driver->unit)++;
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idstring = (char *)malloc(8 + sizeof(" (System Board)") + 1,
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M_DEVBUF, M_NOWAIT);
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if (idstring == NULL) {
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panic("Eisa probe unable to malloc");
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}
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sprintf(idstring, "%c%c%c%x%x (System Board)",
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EISA_MFCTR_CHAR0(e_dev->id),
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EISA_MFCTR_CHAR1(e_dev->id),
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EISA_MFCTR_CHAR2(e_dev->id),
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EISA_PRODUCT_ID(e_dev->id),
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EISA_REVISION_ID(e_dev->id));
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e_dev->full_name = idstring;
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printf("%s%ld: <%s>\n",
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e_dev->driver->name,
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e_dev->unit,
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e_dev->full_name);
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/* Should set the iosize, but I don't have a spec handy */
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printf("Probing for devices on the EISA bus\n");
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dev_node = dev_node->next;
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}
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if (!eisa_dev_list) {
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/*
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* No devices.
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*/
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return;
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}
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/*
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* See what devices we recognize.
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*/
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while((e_drv = *e_drvp++)) {
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if (e_drv->probe)
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(*e_drv->probe)();
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}
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/*
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* Attach the devices we found in slot order
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*/
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for (; dev_node; dev_node=dev_node->next) {
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e_dev = &dev_node->dev;
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e_drv = e_dev->driver;
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if (e_drv) {
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/*
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* Determine the proper unit number for this device.
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* Here we should look in the device table generated
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* by config to see if this type of device is enabled
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* either generically or for this particular address
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* as well as determine if a reserved unit number
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* should be used. We should also ensure that the
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* "next availible unit number" skips over "wired" unit
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* numbers. This will be done after config is fixed or
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* some other configuration method is chosen.
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*/
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e_dev->unit = (*e_drv->unit)++;
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if ((*e_drv->attach)(e_dev) < 0) {
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/* Ensure registration has ended */
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reg_state.in_registration = 0;
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printf("\n%s0:%d <%s> attach failed\n",
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mainboard_drv.name,
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e_dev->ioconf.slot,
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e_dev->full_name);
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continue;
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}
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/* Ensure registration has ended */
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reg_state.in_registration = 0;
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}
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else {
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/* Announce unattached device */
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printf("%s0:%d <%c%c%c%x%x=0x%x> unknown device\n",
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mainboard_drv.name,
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e_dev->ioconf.slot,
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EISA_MFCTR_CHAR0(e_dev->id),
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EISA_MFCTR_CHAR1(e_dev->id),
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EISA_MFCTR_CHAR2(e_dev->id),
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EISA_PRODUCT_ID(e_dev->id),
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EISA_REVISION_ID(e_dev->id),
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e_dev->id);
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}
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}
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}
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struct eisa_device *
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eisa_match_dev(e_dev, match_func)
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struct eisa_device *e_dev;
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const char* (*match_func)(eisa_id_t);
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{
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struct eisa_device_node *e_node = eisa_dev_list;
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if (e_dev) {
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/* Start our search from the last successful match */
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e_node = ((struct eisa_device_node *)e_dev)->next;
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}
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for(; e_node; e_node = e_node->next) {
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const char *result;
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if (e_node->dev.driver) {
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/* Already claimed */
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continue;
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}
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result = (*match_func)(e_node->dev.id);
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if (result) {
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e_node->dev.full_name = result;
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return (&(e_node->dev));
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}
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}
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return NULL;
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}
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/* Interrupt and I/O space registration facitlities */
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void
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eisa_reg_start(e_dev)
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struct eisa_device *e_dev;
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{
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/*
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* Announce the device.
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*/
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char *string;
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reg_state.in_registration = 1;
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reg_state.num_interrupts = 0;
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reg_state.num_ioaddrs = 0;
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reg_state.num_maddrs = 0;
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reg_state.column = 0;
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string = malloc(strlen(e_dev->full_name) + sizeof(" <>") + /*NULL*/1,
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M_TEMP, M_NOWAIT);
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if(!string) {
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printf("eisa0: cannot malloc device description string\n");
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return;
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}
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sprintf(string, " <%s>", e_dev->full_name);
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eisa_reg_print(e_dev, string, /*separator=*/NULL);
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free(string, M_TEMP);
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}
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/*
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* Output registration information mindfull of screen wrap.
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* Output an optional character separator before the string
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* if the line does not wrap.
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*/
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static void
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eisa_reg_print(e_dev, string, separator)
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struct eisa_device *e_dev;
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char *string;
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char *separator;
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{
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int len = strlen(string);
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if(separator)
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len++;
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if(reg_state.column + len > MAX_COL) {
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printf("\n");
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reg_state.column = 0;
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}
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else if(separator) {
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printf("%c", *separator);
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reg_state.column++;
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}
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if(reg_state.column == 0)
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reg_state.column += printf("%s%ld:%s",
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e_dev->driver->name,
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e_dev->unit,
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string);
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else
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reg_state.column += printf("%s", string);
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}
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/* Interrupt and I/O space registration facitlities */
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void
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eisa_reg_end(e_dev)
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struct eisa_device *e_dev;
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{
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if( reg_state.in_registration )
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{
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char string[25];
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sprintf(string, " on %s0 slot %d",
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mainboard_drv.name,
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e_dev->ioconf.slot);
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eisa_reg_print(e_dev, string, NULL);
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printf("\n");
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reg_state.in_registration = 0;
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}
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else
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printf("eisa_reg_end called outside of a "
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"registration session\n");
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}
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int
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eisa_add_intr(e_dev, irq)
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struct eisa_device *e_dev;
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int irq;
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{
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struct irq_node *irq_info;
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irq_info = (struct irq_node *)malloc(sizeof(*irq_info), M_DEVBUF,
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M_NOWAIT);
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if (irq_info == NULL)
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return (1);
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irq_info->irq_no = irq;
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irq_info->idesc = NULL;
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TAILQ_INSERT_TAIL(&e_dev->ioconf.irqs, irq_info, links);
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return 0;
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}
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int
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eisa_reg_intr(e_dev, irq, func, arg, maskptr, shared)
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struct eisa_device *e_dev;
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int irq;
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void (*func)(void *);
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void *arg;
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u_int *maskptr;
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int shared;
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{
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char string[25];
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char separator = ',';
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#if NOT_YET
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/*
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* Punt on conflict detection for the moment.
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* I want to develop a generic routine to do
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* this for all device types.
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*/
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int checkthese = CC_IRQ;
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if (haveseen_dev(dev, checkthese))
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return 1;
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#endif
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if (reg_state.in_registration) {
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/*
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* Find the first instance of this irq that has a
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* NULL idesc.
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*/
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struct irq_node *cur_irq;
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cur_irq = TAILQ_FIRST(&e_dev->ioconf.irqs);
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while (cur_irq != NULL) {
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if (cur_irq->irq_no == irq
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&& cur_irq->idesc == NULL) {
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/* XXX use cfg->devdata */
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void *dev_instance = (void *)-1;
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cur_irq->idesc = intr_create(dev_instance,
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irq,
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func,
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arg,
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maskptr, 0);
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break;
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}
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cur_irq = TAILQ_NEXT(cur_irq, links);
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}
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if (cur_irq == NULL || cur_irq->idesc == NULL)
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return (-1);
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} else {
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return EPERM;
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}
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sprintf(string, " irq %d", irq);
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eisa_reg_print(e_dev, string, reg_state.num_interrupts ?
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&separator : NULL);
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reg_state.num_interrupts++;
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return (0);
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}
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int
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eisa_release_intr(e_dev, irq, func)
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struct eisa_device *e_dev;
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int irq;
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void (*func)(void *);
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{
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int result;
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struct irq_node *cur_irq;
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result = -1;
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cur_irq = TAILQ_FIRST(&e_dev->ioconf.irqs);
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while (cur_irq != NULL) {
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if (cur_irq->irq_no == irq) {
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if (cur_irq->idesc != NULL)
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intr_destroy(cur_irq->idesc);
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cur_irq = TAILQ_NEXT(cur_irq, links);
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TAILQ_REMOVE(&e_dev->ioconf.irqs, cur_irq, links);
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result = 0;
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} else {
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cur_irq = TAILQ_NEXT(cur_irq, links);
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}
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}
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if (result != 0) {
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printf("%s%ld: Attempted to release an interrupt (%d) "
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"it doesn't own\n", e_dev->driver->name,
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e_dev->unit, irq);
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}
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return (result);
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}
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int
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eisa_enable_intr(e_dev, irq)
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struct eisa_device *e_dev;
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int irq;
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{
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struct irq_node *cur_irq;
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int result;
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result = -1;
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cur_irq = TAILQ_FIRST(&e_dev->ioconf.irqs);
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while (cur_irq != NULL) {
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if (cur_irq->irq_no == irq
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&& cur_irq->idesc != NULL) {
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result = intr_connect(cur_irq->idesc);
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}
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cur_irq = TAILQ_NEXT(cur_irq, links);
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}
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return (result);
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}
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static int
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eisa_add_resvaddr(e_dev, head, base, size, flags)
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struct eisa_device *e_dev;
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struct resvlist *head;
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u_long base;
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u_long size;
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int flags;
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{
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resvaddr_t *reservation;
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reservation = (resvaddr_t *)malloc(sizeof(resvaddr_t),
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M_DEVBUF, M_NOWAIT);
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if(!reservation)
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return (ENOMEM);
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reservation->addr = base;
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reservation->size = size;
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reservation->flags = flags;
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if (!head->lh_first) {
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LIST_INSERT_HEAD(head, reservation, links);
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}
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else {
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resvaddr_t *node;
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for(node = head->lh_first; node; node = node->links.le_next) {
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if (node->addr > reservation->addr) {
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/*
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* List is sorted in increasing
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* address order.
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*/
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LIST_INSERT_BEFORE(node, reservation, links);
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break;
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}
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if (node->addr == reservation->addr) {
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/*
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* If the entry we want to add
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* matches any already in here,
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* fail.
|
|
*/
|
|
free(reservation, M_DEVBUF);
|
|
return (EEXIST);
|
|
}
|
|
|
|
if (!node->links.le_next) {
|
|
LIST_INSERT_AFTER(node, reservation, links);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
eisa_add_mspace(e_dev, mbase, msize, flags)
|
|
struct eisa_device *e_dev;
|
|
u_long mbase;
|
|
u_long msize;
|
|
int flags;
|
|
{
|
|
return eisa_add_resvaddr(e_dev, &(e_dev->ioconf.maddrs), mbase, msize,
|
|
flags);
|
|
}
|
|
|
|
int
|
|
eisa_add_iospace(e_dev, iobase, iosize, flags)
|
|
struct eisa_device *e_dev;
|
|
u_long iobase;
|
|
u_long iosize;
|
|
int flags;
|
|
{
|
|
return eisa_add_resvaddr(e_dev, &(e_dev->ioconf.ioaddrs), iobase,
|
|
iosize, flags);
|
|
}
|
|
|
|
static int
|
|
eisa_reg_resvaddr(e_dev, head, resvaddr, reg_count)
|
|
struct eisa_device *e_dev;
|
|
struct resvlist *head;
|
|
resvaddr_t *resvaddr;
|
|
int *reg_count;
|
|
{
|
|
if (reg_state.in_registration) {
|
|
resvaddr_t *node;
|
|
/*
|
|
* Ensure that this resvaddr is actually in the devices'
|
|
* reservation list.
|
|
*/
|
|
for(node = head->lh_first; node;
|
|
node = node->links.le_next) {
|
|
if (node == resvaddr) {
|
|
char buf[35];
|
|
char separator = ',';
|
|
char *string = buf;
|
|
|
|
if (*reg_count == 0) {
|
|
/* First time */
|
|
string += sprintf(string, " at");
|
|
}
|
|
|
|
if (node->size == 1
|
|
|| (node->flags & RESVADDR_BITMASK))
|
|
sprintf(string, " 0x%lx", node->addr);
|
|
else
|
|
sprintf(string, " 0x%lx-0x%lx",
|
|
node->addr,
|
|
node->addr + node->size - 1);
|
|
eisa_reg_print(e_dev, buf,
|
|
*reg_count ? &separator : NULL);
|
|
(*reg_count)++;
|
|
return (0);
|
|
}
|
|
}
|
|
return (ENOENT);
|
|
}
|
|
return EPERM;
|
|
}
|
|
|
|
int
|
|
eisa_reg_mspace(e_dev, resvaddr)
|
|
struct eisa_device *e_dev;
|
|
resvaddr_t *resvaddr;
|
|
{
|
|
#ifdef NOT_YET
|
|
/*
|
|
* Punt on conflict detection for the moment.
|
|
* I want to develop a generic routine to do
|
|
* this for all device types.
|
|
*/
|
|
int checkthese = CC_MADDR;
|
|
if (haveseen_dev(dev, checkthese))
|
|
return -1;
|
|
#endif
|
|
return (eisa_reg_resvaddr(e_dev, &(e_dev->ioconf.maddrs), resvaddr,
|
|
&(reg_state.num_maddrs)));
|
|
}
|
|
|
|
int
|
|
eisa_reg_iospace(e_dev, resvaddr)
|
|
struct eisa_device *e_dev;
|
|
resvaddr_t *resvaddr;
|
|
{
|
|
#ifdef NOT_YET
|
|
/*
|
|
* Punt on conflict detection for the moment.
|
|
* I want to develop a generic routine to do
|
|
* this for all device types.
|
|
*/
|
|
int checkthese = CC_IOADDR;
|
|
if (haveseen_dev(dev, checkthese))
|
|
return -1;
|
|
#endif
|
|
return (eisa_reg_resvaddr(e_dev, &(e_dev->ioconf.ioaddrs), resvaddr,
|
|
&(reg_state.num_ioaddrs)));
|
|
}
|
|
|
|
int
|
|
eisa_registerdev(e_dev, driver)
|
|
struct eisa_device *e_dev;
|
|
struct eisa_driver *driver;
|
|
{
|
|
e_dev->driver = driver; /* Driver now owns this device */
|
|
return (0);
|
|
}
|
|
|