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262 lines
6.2 KiB
262 lines
6.2 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* INET An implementation of the TCP/IP protocol suite for the LINUX |
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* operating system. INET is implemented using the BSD Socket |
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* interface as the means of communication with the user level. |
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* |
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* Holds initial configuration information for devices. |
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* |
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* Version: @(#)Space.c 1.0.7 08/12/93 |
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* |
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* Authors: Ross Biro |
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* Fred N. van Kempen, <[email protected]> |
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* Donald J. Becker, <[email protected]> |
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* |
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* Changelog: |
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* Stephen Hemminger (09/2003) |
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* - get rid of pre-linked dev list, dynamic device allocation |
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* Paul Gortmaker (03/2002) |
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* - struct init cleanup, enable multiple ISA autoprobes. |
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* Arnaldo Carvalho de Melo <[email protected]> - 09/1999 |
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* - fix sbni: s/device/net_device/ |
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* Paul Gortmaker (06/98): |
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* - sort probes in a sane way, make sure all (safe) probes |
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* get run once & failed autoprobes don't autoprobe again. |
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*/ |
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#include <linux/netdevice.h> |
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#include <linux/etherdevice.h> |
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#include <linux/errno.h> |
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#include <linux/init.h> |
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#include <linux/netlink.h> |
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#include <net/Space.h> |
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/* |
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* This structure holds boot-time configured netdevice settings. They |
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* are then used in the device probing. |
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*/ |
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struct netdev_boot_setup { |
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char name[IFNAMSIZ]; |
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struct ifmap map; |
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}; |
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#define NETDEV_BOOT_SETUP_MAX 8 |
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/****************************************************************************** |
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* |
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* Device Boot-time Settings Routines |
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* |
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******************************************************************************/ |
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/* Boot time configuration table */ |
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static struct netdev_boot_setup dev_boot_setup[NETDEV_BOOT_SETUP_MAX]; |
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/** |
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* netdev_boot_setup_add - add new setup entry |
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* @name: name of the device |
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* @map: configured settings for the device |
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* |
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* Adds new setup entry to the dev_boot_setup list. The function |
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* returns 0 on error and 1 on success. This is a generic routine to |
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* all netdevices. |
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*/ |
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static int netdev_boot_setup_add(char *name, struct ifmap *map) |
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{ |
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struct netdev_boot_setup *s; |
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int i; |
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s = dev_boot_setup; |
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for (i = 0; i < NETDEV_BOOT_SETUP_MAX; i++) { |
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if (s[i].name[0] == '\0' || s[i].name[0] == ' ') { |
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memset(s[i].name, 0, sizeof(s[i].name)); |
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strlcpy(s[i].name, name, IFNAMSIZ); |
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memcpy(&s[i].map, map, sizeof(s[i].map)); |
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break; |
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} |
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} |
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return i >= NETDEV_BOOT_SETUP_MAX ? 0 : 1; |
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} |
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/** |
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* netdev_boot_setup_check - check boot time settings |
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* @dev: the netdevice |
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* |
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* Check boot time settings for the device. |
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* The found settings are set for the device to be used |
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* later in the device probing. |
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* Returns 0 if no settings found, 1 if they are. |
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*/ |
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int netdev_boot_setup_check(struct net_device *dev) |
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{ |
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struct netdev_boot_setup *s = dev_boot_setup; |
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int i; |
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for (i = 0; i < NETDEV_BOOT_SETUP_MAX; i++) { |
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if (s[i].name[0] != '\0' && s[i].name[0] != ' ' && |
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!strcmp(dev->name, s[i].name)) { |
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dev->irq = s[i].map.irq; |
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dev->base_addr = s[i].map.base_addr; |
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dev->mem_start = s[i].map.mem_start; |
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dev->mem_end = s[i].map.mem_end; |
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return 1; |
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} |
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} |
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return 0; |
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} |
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EXPORT_SYMBOL(netdev_boot_setup_check); |
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/** |
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* netdev_boot_base - get address from boot time settings |
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* @prefix: prefix for network device |
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* @unit: id for network device |
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* |
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* Check boot time settings for the base address of device. |
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* The found settings are set for the device to be used |
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* later in the device probing. |
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* Returns 0 if no settings found. |
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*/ |
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static unsigned long netdev_boot_base(const char *prefix, int unit) |
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{ |
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const struct netdev_boot_setup *s = dev_boot_setup; |
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char name[IFNAMSIZ]; |
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int i; |
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sprintf(name, "%s%d", prefix, unit); |
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/* |
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* If device already registered then return base of 1 |
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* to indicate not to probe for this interface |
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*/ |
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if (__dev_get_by_name(&init_net, name)) |
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return 1; |
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for (i = 0; i < NETDEV_BOOT_SETUP_MAX; i++) |
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if (!strcmp(name, s[i].name)) |
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return s[i].map.base_addr; |
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return 0; |
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} |
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/* |
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* Saves at boot time configured settings for any netdevice. |
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*/ |
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static int __init netdev_boot_setup(char *str) |
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{ |
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int ints[5]; |
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struct ifmap map; |
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str = get_options(str, ARRAY_SIZE(ints), ints); |
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if (!str || !*str) |
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return 0; |
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/* Save settings */ |
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memset(&map, 0, sizeof(map)); |
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if (ints[0] > 0) |
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map.irq = ints[1]; |
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if (ints[0] > 1) |
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map.base_addr = ints[2]; |
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if (ints[0] > 2) |
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map.mem_start = ints[3]; |
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if (ints[0] > 3) |
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map.mem_end = ints[4]; |
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/* Add new entry to the list */ |
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return netdev_boot_setup_add(str, &map); |
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} |
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__setup("netdev=", netdev_boot_setup); |
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static int __init ether_boot_setup(char *str) |
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{ |
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return netdev_boot_setup(str); |
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} |
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__setup("ether=", ether_boot_setup); |
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/* A unified ethernet device probe. This is the easiest way to have every |
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* ethernet adaptor have the name "eth[0123...]". |
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*/ |
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struct devprobe2 { |
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struct net_device *(*probe)(int unit); |
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int status; /* non-zero if autoprobe has failed */ |
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}; |
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static int __init probe_list2(int unit, struct devprobe2 *p, int autoprobe) |
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{ |
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struct net_device *dev; |
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for (; p->probe; p++) { |
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if (autoprobe && p->status) |
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continue; |
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dev = p->probe(unit); |
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if (!IS_ERR(dev)) |
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return 0; |
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if (autoprobe) |
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p->status = PTR_ERR(dev); |
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} |
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return -ENODEV; |
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} |
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/* ISA probes that touch addresses < 0x400 (including those that also |
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* look for EISA/PCI cards in addition to ISA cards). |
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*/ |
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static struct devprobe2 isa_probes[] __initdata = { |
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#ifdef CONFIG_3C515 |
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{tc515_probe, 0}, |
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#endif |
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#ifdef CONFIG_ULTRA |
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{ultra_probe, 0}, |
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#endif |
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#ifdef CONFIG_WD80x3 |
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{wd_probe, 0}, |
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#endif |
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#if defined(CONFIG_NE2000) /* ISA (use ne2k-pci for PCI cards) */ |
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{ne_probe, 0}, |
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#endif |
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#ifdef CONFIG_LANCE /* ISA/VLB (use pcnet32 for PCI cards) */ |
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{lance_probe, 0}, |
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#endif |
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#ifdef CONFIG_SMC9194 |
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{smc_init, 0}, |
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#endif |
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#ifdef CONFIG_CS89x0_ISA |
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{cs89x0_probe, 0}, |
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#endif |
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#ifdef CONFIG_NI65 |
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{ni65_probe, 0}, |
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#endif |
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{NULL, 0}, |
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}; |
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/* Unified ethernet device probe, segmented per architecture and |
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* per bus interface. This drives the legacy devices only for now. |
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*/ |
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static void __init ethif_probe2(int unit) |
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{ |
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unsigned long base_addr = netdev_boot_base("eth", unit); |
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if (base_addr == 1) |
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return; |
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probe_list2(unit, isa_probes, base_addr == 0); |
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} |
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/* Statically configured drivers -- order matters here. */ |
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static int __init net_olddevs_init(void) |
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{ |
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int num; |
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for (num = 0; num < 8; ++num) |
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ethif_probe2(num); |
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#ifdef CONFIG_COPS |
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cops_probe(0); |
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cops_probe(1); |
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cops_probe(2); |
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#endif |
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return 0; |
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} |
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device_initcall(net_olddevs_init);
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