diff options
Diffstat (limited to 'gpxe/src/drivers/bus/eisa.c')
| -rw-r--r-- | gpxe/src/drivers/bus/eisa.c | 182 |
1 files changed, 0 insertions, 182 deletions
diff --git a/gpxe/src/drivers/bus/eisa.c b/gpxe/src/drivers/bus/eisa.c deleted file mode 100644 index b533364b..00000000 --- a/gpxe/src/drivers/bus/eisa.c +++ /dev/null @@ -1,182 +0,0 @@ -#include <stdint.h> -#include <string.h> -#include <stdlib.h> -#include <stdio.h> -#include <errno.h> -#include <gpxe/io.h> -#include <unistd.h> -#include <gpxe/eisa.h> - -FILE_LICENCE ( GPL2_OR_LATER ); - -static void eisabus_remove ( struct root_device *rootdev ); - -/** - * Reset and enable/disable an EISA device - * - * @v eisa EISA device - * @v enabled 1=enable, 0=disable - */ -void eisa_device_enabled ( struct eisa_device *eisa, int enabled ) { - /* Set reset line high for 1000 µs. Spec says 500 µs, but - * this doesn't work for all cards, so we are conservative. - */ - outb ( EISA_CMD_RESET, eisa->ioaddr + EISA_GLOBAL_CONFIG ); - udelay ( 1000 ); /* Must wait 800 */ - - /* Set reset low and write a 1 to ENABLE. Delay again, in - * case the card takes a while to wake up. - */ - outb ( enabled ? EISA_CMD_ENABLE : 0, - eisa->ioaddr + EISA_GLOBAL_CONFIG ); - udelay ( 1000 ); /* Must wait 800 */ - - DBG ( "EISA %s device %02x\n", ( enabled ? "enabled" : "disabled" ), - eisa->slot ); -} - -/** - * Probe an EISA device - * - * @v eisa EISA device - * @ret rc Return status code - * - * Searches for a driver for the EISA device. If a driver is found, - * its probe() routine is called. - */ -static int eisa_probe ( struct eisa_device *eisa ) { - struct eisa_driver *driver; - struct eisa_device_id *id; - unsigned int i; - int rc; - - DBG ( "Adding EISA device %02x (%04x:%04x (\"%s\") io %x)\n", - eisa->slot, eisa->vendor_id, eisa->prod_id, - isa_id_string ( eisa->vendor_id, eisa->prod_id ), eisa->ioaddr ); - - for_each_table_entry ( driver, EISA_DRIVERS ) { - for ( i = 0 ; i < driver->id_count ; i++ ) { - id = &driver->ids[i]; - if ( id->vendor_id != eisa->vendor_id ) - continue; - if ( ISA_PROD_ID ( id->prod_id ) != - ISA_PROD_ID ( eisa->prod_id ) ) - continue; - eisa->driver = driver; - eisa->driver_name = id->name; - DBG ( "...using driver %s\n", eisa->driver_name ); - if ( ( rc = driver->probe ( eisa, id ) ) != 0 ) { - DBG ( "......probe failed\n" ); - continue; - } - return 0; - } - } - - DBG ( "...no driver found\n" ); - return -ENOTTY; -} - -/** - * Remove an EISA device - * - * @v eisa EISA device - */ -static void eisa_remove ( struct eisa_device *eisa ) { - eisa->driver->remove ( eisa ); - DBG ( "Removed EISA device %02x\n", eisa->slot ); -} - -/** - * Probe EISA root bus - * - * @v rootdev EISA bus root device - * - * Scans the EISA bus for devices and registers all devices it can - * find. - */ -static int eisabus_probe ( struct root_device *rootdev ) { - struct eisa_device *eisa = NULL; - unsigned int slot; - int rc; - - for ( slot = EISA_MIN_SLOT ; slot <= EISA_MAX_SLOT ; slot++ ) { - /* Allocate struct eisa_device */ - if ( ! eisa ) - eisa = malloc ( sizeof ( *eisa ) ); - if ( ! eisa ) { - rc = -ENOMEM; - goto err; - } - memset ( eisa, 0, sizeof ( *eisa ) ); - eisa->slot = slot; - eisa->ioaddr = EISA_SLOT_BASE ( eisa->slot ); - - /* Test for board present */ - outb ( 0xff, eisa->ioaddr + EISA_VENDOR_ID ); - eisa->vendor_id = - le16_to_cpu ( inw ( eisa->ioaddr + EISA_VENDOR_ID ) ); - eisa->prod_id = - le16_to_cpu ( inw ( eisa->ioaddr + EISA_PROD_ID ) ); - if ( eisa->vendor_id & 0x80 ) { - /* No board present */ - continue; - } - - /* Add to device hierarchy */ - snprintf ( eisa->dev.name, sizeof ( eisa->dev.name ), - "EISA%02x", slot ); - eisa->dev.desc.bus_type = BUS_TYPE_EISA; - eisa->dev.desc.vendor = eisa->vendor_id; - eisa->dev.desc.device = eisa->prod_id; - eisa->dev.parent = &rootdev->dev; - list_add ( &eisa->dev.siblings, &rootdev->dev.children ); - INIT_LIST_HEAD ( &eisa->dev.children ); - - /* Look for a driver */ - if ( eisa_probe ( eisa ) == 0 ) { - /* eisadev registered, we can drop our ref */ - eisa = NULL; - } else { - /* Not registered; re-use struct */ - list_del ( &eisa->dev.siblings ); - } - } - - free ( eisa ); - return 0; - - err: - free ( eisa ); - eisabus_remove ( rootdev ); - return rc; -} - -/** - * Remove EISA root bus - * - * @v rootdev EISA bus root device - */ -static void eisabus_remove ( struct root_device *rootdev ) { - struct eisa_device *eisa; - struct eisa_device *tmp; - - list_for_each_entry_safe ( eisa, tmp, &rootdev->dev.children, - dev.siblings ) { - eisa_remove ( eisa ); - list_del ( &eisa->dev.siblings ); - free ( eisa ); - } -} - -/** EISA bus root device driver */ -static struct root_driver eisa_root_driver = { - .probe = eisabus_probe, - .remove = eisabus_remove, -}; - -/** EISA bus root device */ -struct root_device eisa_root_device __root_device = { - .dev = { .name = "EISA" }, - .driver = &eisa_root_driver, -}; |