diff options
Diffstat (limited to 'gpxe/src/drivers/bus/isa.c')
| -rw-r--r-- | gpxe/src/drivers/bus/isa.c | 172 |
1 files changed, 0 insertions, 172 deletions
diff --git a/gpxe/src/drivers/bus/isa.c b/gpxe/src/drivers/bus/isa.c deleted file mode 100644 index f458826d..00000000 --- a/gpxe/src/drivers/bus/isa.c +++ /dev/null @@ -1,172 +0,0 @@ -#include <stdint.h> -#include <string.h> -#include <stdlib.h> -#include <stdio.h> -#include <errno.h> -#include <gpxe/io.h> -#include <gpxe/isa.h> - -FILE_LICENCE ( GPL2_OR_LATER ); - -/* - * isa.c implements a "classical" port-scanning method of ISA device - * detection. The driver must provide a list of probe addresses - * (probe_addrs), together with a function (probe_addr) that can be - * used to test for the physical presence of a device at any given - * address. - * - * Note that this should probably be considered the "last resort" for - * device probing. If the card supports ISAPnP or EISA, use that - * instead. Some cards (e.g. the 3c509) implement a proprietary - * ISAPnP-like mechanism. - * - * The ISA probe address list can be overridden by config.h; if the - * user specifies ISA_PROBE_ADDRS then that list will be used first. - * (If ISA_PROBE_ONLY is defined, the driver's own list will never be - * used). - */ - -/* - * User-supplied probe address list - * - */ -static isa_probe_addr_t isa_extra_probe_addrs[] = { -#ifdef ISA_PROBE_ADDRS - ISA_PROBE_ADDRS -#endif -}; -#define ISA_EXTRA_PROBE_ADDR_COUNT \ - ( sizeof ( isa_extra_probe_addrs ) / sizeof ( isa_extra_probe_addrs[0] ) ) - -#define ISA_IOIDX_MIN( driver ) ( -ISA_EXTRA_PROBE_ADDR_COUNT ) -#ifdef ISA_PROBE_ONLY -#define ISA_IOIDX_MAX( driver ) ( -1 ) -#else -#define ISA_IOIDX_MAX( driver ) ( (int) (driver)->addr_count - 1 ) -#endif - -#define ISA_IOADDR( driver, ioidx ) \ - ( ( (ioidx) < 0 ) ? \ - isa_extra_probe_addrs[ (ioidx) + ISA_EXTRA_PROBE_ADDR_COUNT ] : \ - (driver)->probe_addrs[(ioidx)] ) - -static void isabus_remove ( struct root_device *rootdev ); - -/** - * Probe an ISA device - * - * @v isa ISA device - * @ret rc Return status code - */ -static int isa_probe ( struct isa_device *isa ) { - int rc; - - DBG ( "Trying ISA driver %s at I/O %04x\n", - isa->driver->name, isa->ioaddr ); - - if ( ( rc = isa->driver->probe ( isa ) ) != 0 ) { - DBG ( "...probe failed\n" ); - return rc; - } - - DBG ( "...device found\n" ); - return 0; -} - -/** - * Remove an ISA device - * - * @v isa ISA device - */ -static void isa_remove ( struct isa_device *isa ) { - isa->driver->remove ( isa ); - DBG ( "Removed ISA%04x\n", isa->ioaddr ); -} - -/** - * Probe ISA root bus - * - * @v rootdev ISA bus root device - * - * Scans the ISA bus for devices and registers all devices it can - * find. - */ -static int isabus_probe ( struct root_device *rootdev ) { - struct isa_device *isa = NULL; - struct isa_driver *driver; - int ioidx; - int rc; - - for_each_table_entry ( driver, ISA_DRIVERS ) { - for ( ioidx = ISA_IOIDX_MIN ( driver ) ; - ioidx <= ISA_IOIDX_MAX ( driver ) ; ioidx++ ) { - /* Allocate struct isa_device */ - if ( ! isa ) - isa = malloc ( sizeof ( *isa ) ); - if ( ! isa ) { - rc = -ENOMEM; - goto err; - } - memset ( isa, 0, sizeof ( *isa ) ); - isa->driver = driver; - isa->ioaddr = ISA_IOADDR ( driver, ioidx ); - - /* Add to device hierarchy */ - snprintf ( isa->dev.name, sizeof ( isa->dev.name ), - "ISA%04x", isa->ioaddr ); - isa->dev.desc.bus_type = BUS_TYPE_ISA; - isa->dev.desc.vendor = driver->vendor_id; - isa->dev.desc.device = driver->prod_id; - isa->dev.parent = &rootdev->dev; - list_add ( &isa->dev.siblings, - &rootdev->dev.children ); - INIT_LIST_HEAD ( &isa->dev.children ); - - /* Try probing at this I/O address */ - if ( isa_probe ( isa ) == 0 ) { - /* isadev registered, we can drop our ref */ - isa = NULL; - } else { - /* Not registered; re-use struct */ - list_del ( &isa->dev.siblings ); - } - } - } - - free ( isa ); - return 0; - - err: - free ( isa ); - isabus_remove ( rootdev ); - return rc; -} - -/** - * Remove ISA root bus - * - * @v rootdev ISA bus root device - */ -static void isabus_remove ( struct root_device *rootdev ) { - struct isa_device *isa; - struct isa_device *tmp; - - list_for_each_entry_safe ( isa, tmp, &rootdev->dev.children, - dev.siblings ) { - isa_remove ( isa ); - list_del ( &isa->dev.siblings ); - free ( isa ); - } -} - -/** ISA bus root device driver */ -static struct root_driver isa_root_driver = { - .probe = isabus_probe, - .remove = isabus_remove, -}; - -/** ISA bus root device */ -struct root_device isa_root_device __root_device = { - .dev = { .name = "ISA" }, - .driver = &isa_root_driver, -}; |