mirror of
https://github.com/ipxe/ipxe
synced 2025-12-30 13:11:11 +03:00
Updated ISAPnP, EISA, MCA and ISA buses to current device model.
ISA 3c509 is currently non-functional, although the EISA (3c509-eisa) and MCA (3c529) variants should build OK. None of this code is yet tested.
This commit is contained in:
Michael Brown
@@ -5,157 +5,177 @@
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*
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*/
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#include "string.h"
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#include "io.h"
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#include "console.h"
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#include "dev.h"
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#include "mca.h"
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#include <stdint.h>
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#include <string.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <errno.h>
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#include <io.h>
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#include <timer.h>
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#include <gpxe/mca.h>
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/*
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* Increment a bus_loc structure to the next possible MCA location.
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* Leave the structure zeroed and return 0 if there are no more valid
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* locations.
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static struct mca_driver mca_drivers[0]
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__table_start ( struct mca_driver, mca_drivers );
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static struct mca_driver mca_drivers_end[0]
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__table_end ( struct mca_driver, mca_drivers );
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static void mcabus_remove ( struct root_device *rootdev );
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/**
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* Probe an MCA device
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*
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*/
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static int mca_next_location ( struct bus_loc *bus_loc ) {
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struct mca_loc *mca_loc = ( struct mca_loc * ) bus_loc;
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/*
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* Ensure that there is sufficient space in the shared bus
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* structures for a struct mca_loc and a struct
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* mca_dev, as mandated by bus.h.
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*
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*/
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BUS_LOC_CHECK ( struct mca_loc );
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BUS_DEV_CHECK ( struct mca_device );
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return ( mca_loc->slot = ( ++mca_loc->slot & MCA_MAX_SLOT_NR ) );
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}
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/*
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* Fill in parameters for an MCA device based on slot number
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* @v mca MCA device
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* @ret rc Return status code
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*
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* Searches for a driver for the MCA device. If a driver is found,
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* its probe() routine is called.
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*/
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static int mca_fill_device ( struct bus_dev *bus_dev,
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struct bus_loc *bus_loc ) {
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struct mca_loc *mca_loc = ( struct mca_loc * ) bus_loc;
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struct mca_device *mca = ( struct mca_device * ) bus_dev;
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unsigned int i, seen_non_ff;
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static int mca_probe ( struct mca_device *mca ) {
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struct mca_driver *driver;
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struct mca_device_id *id;
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unsigned int i;
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int rc;
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/* Store slot in struct mca, set default values */
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mca->slot = mca_loc->slot;
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mca->name = "?";
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/* Make sure motherboard setup is off */
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outb_p ( 0xff, MCA_MOTHERBOARD_SETUP_REG );
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/* Select the slot */
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outb_p ( 0x8 | ( mca->slot & 0xf ), MCA_ADAPTER_SETUP_REG );
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/* Read the POS registers */
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seen_non_ff = 0;
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for ( i = 0 ; i < ( sizeof ( mca->pos ) / sizeof ( mca->pos[0] ) ) ;
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i++ ) {
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mca->pos[i] = inb_p ( MCA_POS_REG ( i ) );
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if ( mca->pos[i] != 0xff )
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seen_non_ff = 1;
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}
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/* If all POS registers are 0xff, this means there's no device
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* present
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*/
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if ( ! seen_non_ff )
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return 0;
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/* Kill all setup modes */
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outb_p ( 0, MCA_ADAPTER_SETUP_REG );
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DBG ( "MCA found slot %d id %hx "
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"(POS %hhx:%hhx:%hhx:%hhx:%hhx:%hhx:%hhx:%hhx)\n",
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DBG ( "Adding MCA slot %02x (ID %04x POS "
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"%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x)\n",
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mca->slot, MCA_ID ( mca ),
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mca->pos[0], mca->pos[1], mca->pos[2], mca->pos[3],
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mca->pos[4], mca->pos[5], mca->pos[6], mca->pos[7] );
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return 1;
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}
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/*
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* Test whether or not a driver is capable of driving the device.
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*
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*/
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static int mca_check_driver ( struct bus_dev *bus_dev,
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struct device_driver *device_driver ) {
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struct mca_device *mca = ( struct mca_device * ) bus_dev;
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struct mca_driver *driver
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= ( struct mca_driver * ) device_driver->bus_driver_info;
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unsigned int i;
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/* Compare against driver's ID list */
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for ( i = 0 ; i < driver->id_count ; i++ ) {
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struct mca_id *id = &driver->ids[i];
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if ( MCA_ID ( mca ) == id->id ) {
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DBG ( "MCA found ID %hx (device %s) "
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"matching driver %s\n",
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id->name, id->id, device_driver->name );
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mca->name = id->name;
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return 1;
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for ( driver = mca_drivers; driver < mca_drivers_end; driver++ ){
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for ( i = 0 ; i < driver->id_count ; i++ ) {
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id = &driver->ids[i];
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if ( id->id != MCA_ID ( mca ) )
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continue;
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mca->driver = driver;
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mca->driver_name = id->name;
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DBG ( "...using driver %s\n", mca->driver_name );
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if ( ( rc = driver->probe ( mca, id ) ) != 0 ) {
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DBG ( "......probe failed\n" );
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continue;
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}
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return 0;
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}
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}
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/* No device found */
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return 0;
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DBG ( "...no driver found\n" );
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return -ENOTTY;
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}
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/*
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* Describe an MCA device
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/**
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* Remove an MCA device
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*
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* @v mca MCA device
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*/
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static char * mca_describe_device ( struct bus_dev *bus_dev ) {
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struct mca_device *mca = ( struct mca_device * ) bus_dev;
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static char mca_description[] = "MCA 00";
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sprintf ( mca_description + 4, "%hhx", mca->slot );
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return mca_description;
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static void mca_remove ( struct mca_device *mca ) {
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mca->driver->remove ( mca );
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DBG ( "Removed MCA device %02x\n", mca->slot );
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}
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/*
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* Name an MCA device
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/**
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* Probe MCA root bus
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*
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* @v rootdev MCA bus root device
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*
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* Scans the MCA bus for devices and registers all devices it can
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* find.
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*/
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static const char * mca_name_device ( struct bus_dev *bus_dev ) {
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struct mca_device *mca = ( struct mca_device * ) bus_dev;
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static int mcabus_probe ( struct root_device *rootdev ) {
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struct mca_device *mca = NULL;
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unsigned int slot;
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int seen_non_ff;
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unsigned int i;
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int rc;
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for ( slot = 0 ; slot <= MCA_MAX_SLOT_NR ; slot++ ) {
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/* Allocate struct mca_device */
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if ( ! mca )
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mca = malloc ( sizeof ( *mca ) );
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if ( ! mca ) {
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rc = -ENOMEM;
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goto err;
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}
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memset ( mca, 0, sizeof ( *mca ) );
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mca->slot = slot;
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/* Make sure motherboard setup is off */
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outb_p ( 0xff, MCA_MOTHERBOARD_SETUP_REG );
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/* Select the slot */
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outb_p ( 0x8 | ( mca->slot & 0xf ), MCA_ADAPTER_SETUP_REG );
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/* Read the POS registers */
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seen_non_ff = 0;
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for ( i = 0 ; i < ( sizeof ( mca->pos ) /
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sizeof ( mca->pos[0] ) ) ; i++ ) {
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mca->pos[i] = inb_p ( MCA_POS_REG ( i ) );
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if ( mca->pos[i] != 0xff )
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seen_non_ff = 1;
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}
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return mca->name;
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/* Kill all setup modes */
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outb_p ( 0, MCA_ADAPTER_SETUP_REG );
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/* If all POS registers are 0xff, this means there's no device
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* present
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*/
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if ( ! seen_non_ff )
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continue;
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/* Add to device hierarchy */
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snprintf ( mca->dev.name, sizeof ( mca->dev.name ),
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"MCA%02x", slot );
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mca->dev.desc.bus_type = BUS_TYPE_MCA;
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mca->dev.desc.vendor = GENERIC_MCA_VENDOR;
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mca->dev.desc.device = MCA_ID ( mca );
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mca->dev.parent = &rootdev->dev;
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list_add ( &mca->dev.siblings, &rootdev->dev.children );
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INIT_LIST_HEAD ( &mca->dev.children );
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/* Look for a driver */
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if ( mca_probe ( mca ) == 0 ) {
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/* mcadev registered, we can drop our ref */
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mca = NULL;
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} else {
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/* Not registered; re-use struct */
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list_del ( &mca->dev.siblings );
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}
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}
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free ( mca );
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return 0;
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err:
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free ( mca );
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mcabus_remove ( rootdev );
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return rc;
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}
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/*
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* MCA bus operations table
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/**
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* Remove MCA root bus
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*
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* @v rootdev MCA bus root device
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*/
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struct bus_driver mca_driver __bus_driver = {
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.name = "MCA",
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.next_location = mca_next_location,
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.fill_device = mca_fill_device,
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.check_driver = mca_check_driver,
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.describe_device = mca_describe_device,
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.name_device = mca_name_device,
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static void mcabus_remove ( struct root_device *rootdev ) {
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struct mca_device *mca;
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struct mca_device *tmp;
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list_for_each_entry_safe ( mca, tmp, &rootdev->dev.children,
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dev.siblings ) {
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mca_remove ( mca );
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list_del ( &mca->dev.siblings );
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free ( mca );
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}
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}
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/** MCA bus root device driver */
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static struct root_driver mca_root_driver = {
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.probe = mcabus_probe,
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.remove = mcabus_remove,
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};
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/*
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* Fill in a nic structure
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*
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*/
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void mca_fill_nic ( struct nic *nic, struct mca_device *mca ) {
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/* ioaddr and irqno must be read in a device-dependent way
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* from the POS registers
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*/
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nic->ioaddr = 0;
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nic->irqno = 0;
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/* Fill in DHCP device ID structure */
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nic->dhcp_dev_id.bus_type = MCA_BUS_TYPE;
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nic->dhcp_dev_id.vendor_id = htons ( GENERIC_MCA_VENDOR );
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nic->dhcp_dev_id.device_id = htons ( MCA_ID ( mca ) );
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}
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/** MCA bus root device */
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struct root_device mca_root_device __root_device = {
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.dev = { .name = "MCA" },
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.driver = &mca_root_driver,
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};
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