diff options
Diffstat (limited to 'gpxe/src/drivers/bus/mca.c')
| -rw-r--r-- | gpxe/src/drivers/bus/mca.c | 177 |
1 files changed, 0 insertions, 177 deletions
diff --git a/gpxe/src/drivers/bus/mca.c b/gpxe/src/drivers/bus/mca.c deleted file mode 100644 index 2815603e..00000000 --- a/gpxe/src/drivers/bus/mca.c +++ /dev/null @@ -1,177 +0,0 @@ -/* - * MCA bus driver code - * - * Abstracted from 3c509.c. - * - */ - -FILE_LICENCE ( BSD2 ); - -#include <stdint.h> -#include <string.h> -#include <stdlib.h> -#include <stdio.h> -#include <errno.h> -#include <gpxe/io.h> -#include <gpxe/mca.h> - -static void mcabus_remove ( struct root_device *rootdev ); - -/** - * Probe an MCA device - * - * @v mca MCA device - * @ret rc Return status code - * - * Searches for a driver for the MCA device. If a driver is found, - * its probe() routine is called. - */ -static int mca_probe ( struct mca_device *mca ) { - struct mca_driver *driver; - struct mca_device_id *id; - unsigned int i; - int rc; - - DBG ( "Adding MCA slot %02x (ID %04x POS " - "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x)\n", - mca->slot, MCA_ID ( mca ), - mca->pos[0], mca->pos[1], mca->pos[2], mca->pos[3], - mca->pos[4], mca->pos[5], mca->pos[6], mca->pos[7] ); - - for_each_table_entry ( driver, MCA_DRIVERS ) { - for ( i = 0 ; i < driver->id_count ; i++ ) { - id = &driver->ids[i]; - if ( id->id != MCA_ID ( mca ) ) - continue; - mca->driver = driver; - mca->driver_name = id->name; - DBG ( "...using driver %s\n", mca->driver_name ); - if ( ( rc = driver->probe ( mca, id ) ) != 0 ) { - DBG ( "......probe failed\n" ); - continue; - } - return 0; - } - } - - DBG ( "...no driver found\n" ); - return -ENOTTY; -} - -/** - * Remove an MCA device - * - * @v mca MCA device - */ -static void mca_remove ( struct mca_device *mca ) { - mca->driver->remove ( mca ); - DBG ( "Removed MCA device %02x\n", mca->slot ); -} - -/** - * Probe MCA root bus - * - * @v rootdev MCA bus root device - * - * Scans the MCA bus for devices and registers all devices it can - * find. - */ -static int mcabus_probe ( struct root_device *rootdev ) { - struct mca_device *mca = NULL; - unsigned int slot; - int seen_non_ff; - unsigned int i; - int rc; - - for ( slot = 0 ; slot <= MCA_MAX_SLOT_NR ; slot++ ) { - /* Allocate struct mca_device */ - if ( ! mca ) - mca = malloc ( sizeof ( *mca ) ); - if ( ! mca ) { - rc = -ENOMEM; - goto err; - } - memset ( mca, 0, sizeof ( *mca ) ); - mca->slot = slot; - - /* Make sure motherboard setup is off */ - outb_p ( 0xff, MCA_MOTHERBOARD_SETUP_REG ); - - /* Select the slot */ - outb_p ( 0x8 | ( mca->slot & 0xf ), MCA_ADAPTER_SETUP_REG ); - - /* Read the POS registers */ - seen_non_ff = 0; - for ( i = 0 ; i < ( sizeof ( mca->pos ) / - sizeof ( mca->pos[0] ) ) ; i++ ) { - mca->pos[i] = inb_p ( MCA_POS_REG ( i ) ); - if ( mca->pos[i] != 0xff ) - seen_non_ff = 1; - } - - /* Kill all setup modes */ - outb_p ( 0, MCA_ADAPTER_SETUP_REG ); - - /* If all POS registers are 0xff, this means there's no device - * present - */ - if ( ! seen_non_ff ) - continue; - - /* Add to device hierarchy */ - snprintf ( mca->dev.name, sizeof ( mca->dev.name ), - "MCA%02x", slot ); - mca->dev.desc.bus_type = BUS_TYPE_MCA; - mca->dev.desc.vendor = GENERIC_MCA_VENDOR; - mca->dev.desc.device = MCA_ID ( mca ); - mca->dev.parent = &rootdev->dev; - list_add ( &mca->dev.siblings, &rootdev->dev.children ); - INIT_LIST_HEAD ( &mca->dev.children ); - - /* Look for a driver */ - if ( mca_probe ( mca ) == 0 ) { - /* mcadev registered, we can drop our ref */ - mca = NULL; - } else { - /* Not registered; re-use struct */ - list_del ( &mca->dev.siblings ); - } - } - - free ( mca ); - return 0; - - err: - free ( mca ); - mcabus_remove ( rootdev ); - return rc; -} - -/** - * Remove MCA root bus - * - * @v rootdev MCA bus root device - */ -static void mcabus_remove ( struct root_device *rootdev ) { - struct mca_device *mca; - struct mca_device *tmp; - - list_for_each_entry_safe ( mca, tmp, &rootdev->dev.children, - dev.siblings ) { - mca_remove ( mca ); - list_del ( &mca->dev.siblings ); - free ( mca ); - } -} - -/** MCA bus root device driver */ -static struct root_driver mca_root_driver = { - .probe = mcabus_probe, - .remove = mcabus_remove, -}; - -/** MCA bus root device */ -struct root_device mca_root_device __root_device = { - .dev = { .name = "MCA" }, - .driver = &mca_root_driver, -}; |