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- // SPDX-License-Identifier: GPL-2.0-or-later
- /*
- * INET An implementation of the TCP/IP protocol suite for the LINUX
- * operating system. INET is implemented using the BSD Socket
- * interface as the means of communication with the user level.
- *
- * Holds initial configuration information for devices.
- *
- * Version: @(#)Space.c 1.0.7 08/12/93
- *
- * Authors: Ross Biro
- * Fred N. van Kempen, <[email protected]>
- * Donald J. Becker, <[email protected]>
- *
- * Changelog:
- * Stephen Hemminger (09/2003)
- * - get rid of pre-linked dev list, dynamic device allocation
- * Paul Gortmaker (03/2002)
- * - struct init cleanup, enable multiple ISA autoprobes.
- * Arnaldo Carvalho de Melo <[email protected]> - 09/1999
- * - fix sbni: s/device/net_device/
- * Paul Gortmaker (06/98):
- * - sort probes in a sane way, make sure all (safe) probes
- * get run once & failed autoprobes don't autoprobe again.
- */
- #include <linux/netdevice.h>
- #include <linux/etherdevice.h>
- #include <linux/errno.h>
- #include <linux/init.h>
- #include <linux/netlink.h>
- #include <net/Space.h>
- /*
- * This structure holds boot-time configured netdevice settings. They
- * are then used in the device probing.
- */
- struct netdev_boot_setup {
- char name[IFNAMSIZ];
- struct ifmap map;
- };
- #define NETDEV_BOOT_SETUP_MAX 8
- /******************************************************************************
- *
- * Device Boot-time Settings Routines
- *
- ******************************************************************************/
- /* Boot time configuration table */
- static struct netdev_boot_setup dev_boot_setup[NETDEV_BOOT_SETUP_MAX];
- /**
- * netdev_boot_setup_add - add new setup entry
- * @name: name of the device
- * @map: configured settings for the device
- *
- * Adds new setup entry to the dev_boot_setup list. The function
- * returns 0 on error and 1 on success. This is a generic routine to
- * all netdevices.
- */
- static int netdev_boot_setup_add(char *name, struct ifmap *map)
- {
- struct netdev_boot_setup *s;
- int i;
- s = dev_boot_setup;
- for (i = 0; i < NETDEV_BOOT_SETUP_MAX; i++) {
- if (s[i].name[0] == '\0' || s[i].name[0] == ' ') {
- memset(s[i].name, 0, sizeof(s[i].name));
- strscpy(s[i].name, name, IFNAMSIZ);
- memcpy(&s[i].map, map, sizeof(s[i].map));
- break;
- }
- }
- return i >= NETDEV_BOOT_SETUP_MAX ? 0 : 1;
- }
- /**
- * netdev_boot_setup_check - check boot time settings
- * @dev: the netdevice
- *
- * Check boot time settings for the device.
- * The found settings are set for the device to be used
- * later in the device probing.
- * Returns 0 if no settings found, 1 if they are.
- */
- int netdev_boot_setup_check(struct net_device *dev)
- {
- struct netdev_boot_setup *s = dev_boot_setup;
- int i;
- for (i = 0; i < NETDEV_BOOT_SETUP_MAX; i++) {
- if (s[i].name[0] != '\0' && s[i].name[0] != ' ' &&
- !strcmp(dev->name, s[i].name)) {
- dev->irq = s[i].map.irq;
- dev->base_addr = s[i].map.base_addr;
- dev->mem_start = s[i].map.mem_start;
- dev->mem_end = s[i].map.mem_end;
- return 1;
- }
- }
- return 0;
- }
- EXPORT_SYMBOL(netdev_boot_setup_check);
- /**
- * netdev_boot_base - get address from boot time settings
- * @prefix: prefix for network device
- * @unit: id for network device
- *
- * Check boot time settings for the base address of device.
- * The found settings are set for the device to be used
- * later in the device probing.
- * Returns 0 if no settings found.
- */
- static unsigned long netdev_boot_base(const char *prefix, int unit)
- {
- const struct netdev_boot_setup *s = dev_boot_setup;
- char name[IFNAMSIZ];
- int i;
- sprintf(name, "%s%d", prefix, unit);
- /*
- * If device already registered then return base of 1
- * to indicate not to probe for this interface
- */
- if (__dev_get_by_name(&init_net, name))
- return 1;
- for (i = 0; i < NETDEV_BOOT_SETUP_MAX; i++)
- if (!strcmp(name, s[i].name))
- return s[i].map.base_addr;
- return 0;
- }
- /*
- * Saves at boot time configured settings for any netdevice.
- */
- static int __init netdev_boot_setup(char *str)
- {
- int ints[5];
- struct ifmap map;
- str = get_options(str, ARRAY_SIZE(ints), ints);
- if (!str || !*str)
- return 0;
- /* Save settings */
- memset(&map, 0, sizeof(map));
- if (ints[0] > 0)
- map.irq = ints[1];
- if (ints[0] > 1)
- map.base_addr = ints[2];
- if (ints[0] > 2)
- map.mem_start = ints[3];
- if (ints[0] > 3)
- map.mem_end = ints[4];
- /* Add new entry to the list */
- return netdev_boot_setup_add(str, &map);
- }
- __setup("netdev=", netdev_boot_setup);
- static int __init ether_boot_setup(char *str)
- {
- return netdev_boot_setup(str);
- }
- __setup("ether=", ether_boot_setup);
- /* A unified ethernet device probe. This is the easiest way to have every
- * ethernet adaptor have the name "eth[0123...]".
- */
- struct devprobe2 {
- struct net_device *(*probe)(int unit);
- int status; /* non-zero if autoprobe has failed */
- };
- static int __init probe_list2(int unit, struct devprobe2 *p, int autoprobe)
- {
- struct net_device *dev;
- for (; p->probe; p++) {
- if (autoprobe && p->status)
- continue;
- dev = p->probe(unit);
- if (!IS_ERR(dev))
- return 0;
- if (autoprobe)
- p->status = PTR_ERR(dev);
- }
- return -ENODEV;
- }
- /* ISA probes that touch addresses < 0x400 (including those that also
- * look for EISA/PCI cards in addition to ISA cards).
- */
- static struct devprobe2 isa_probes[] __initdata = {
- #ifdef CONFIG_3C515
- {tc515_probe, 0},
- #endif
- #ifdef CONFIG_ULTRA
- {ultra_probe, 0},
- #endif
- #ifdef CONFIG_WD80x3
- {wd_probe, 0},
- #endif
- #if defined(CONFIG_NE2000) /* ISA (use ne2k-pci for PCI cards) */
- {ne_probe, 0},
- #endif
- #ifdef CONFIG_LANCE /* ISA/VLB (use pcnet32 for PCI cards) */
- {lance_probe, 0},
- #endif
- #ifdef CONFIG_SMC9194
- {smc_init, 0},
- #endif
- #ifdef CONFIG_CS89x0_ISA
- {cs89x0_probe, 0},
- #endif
- {NULL, 0},
- };
- /* Unified ethernet device probe, segmented per architecture and
- * per bus interface. This drives the legacy devices only for now.
- */
- static void __init ethif_probe2(int unit)
- {
- unsigned long base_addr = netdev_boot_base("eth", unit);
- if (base_addr == 1)
- return;
- probe_list2(unit, isa_probes, base_addr == 0);
- }
- /* Statically configured drivers -- order matters here. */
- static int __init net_olddevs_init(void)
- {
- int num;
- for (num = 0; num < 8; ++num)
- ethif_probe2(num);
- #ifdef CONFIG_COPS
- cops_probe(0);
- cops_probe(1);
- cops_probe(2);
- #endif
- return 0;
- }
- device_initcall(net_olddevs_init);
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