// 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, * Donald J. Becker, * * 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 - 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 #include #include #include #include #include /* * 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)); strlcpy(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 #ifdef CONFIG_NI65 {ni65_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);