[linux-block.git] / drivers / net / Space.c

// 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, <waltje@uWalt.NL.Mugnet.ORG>
 *		Donald J. Becker, <becker@scyld.com>
 *
 * 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 <acme@conectiva.com.br> - 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));
			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);
Commit	Line	Data
2874c5fd	1	// SPDX-License-Identifier: GPL-2.0-or-later
1da177e4 LT	2	/*
	3	* INET An implementation of the TCP/IP protocol suite for the LINUX
	4	* operating system. INET is implemented using the BSD Socket
	5	* interface as the means of communication with the user level.
	6	*
	7	* Holds initial configuration information for devices.
	8	*
	9	* Version: @(#)Space.c 1.0.7 08/12/93
	10	*
02c30a84	11	* Authors: Ross Biro
1da177e4 LT	12	* Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
	13	* Donald J. Becker, <becker@scyld.com>
	14	*
	15	* Changelog:
	16	* Stephen Hemminger (09/2003)
	17	* - get rid of pre-linked dev list, dynamic device allocation
	18	* Paul Gortmaker (03/2002)
	19	* - struct init cleanup, enable multiple ISA autoprobes.
	20	* Arnaldo Carvalho de Melo <acme@conectiva.com.br> - 09/1999
	21	* - fix sbni: s/device/net_device/
6aa20a22	22	* Paul Gortmaker (06/98):
1da177e4 LT	23	* - sort probes in a sane way, make sure all (safe) probes
1da177e4 LT	24	* get run once & failed autoprobes don't autoprobe again.
1da177e4	25	*/
1da177e4 LT	26	#include <linux/netdevice.h>
1da177e4 LT	27	#include <linux/etherdevice.h>
1da177e4 LT	28	#include <linux/errno.h>
	29	#include <linux/init.h>
	30	#include <linux/netlink.h>
b6835f9c	31	#include <net/Space.h>
1da177e4	32
5ea2f5ff AB	33	/*
	34	* This structure holds boot-time configured netdevice settings. They
	35	* are then used in the device probing.
	36	*/
	37	struct netdev_boot_setup {
	38	char name[IFNAMSIZ];
	39	struct ifmap map;
	40	};
	41	#define NETDEV_BOOT_SETUP_MAX 8
	42
	43
	44	/******************************************************************************
	45	*
	46	* Device Boot-time Settings Routines
	47	*
	48	******************************************************************************/
	49
	50	/* Boot time configuration table */
	51	static struct netdev_boot_setup dev_boot_setup[NETDEV_BOOT_SETUP_MAX];
	52
	53	/**
	54	* netdev_boot_setup_add - add new setup entry
	55	* @name: name of the device
	56	* @map: configured settings for the device
	57	*
	58	* Adds new setup entry to the dev_boot_setup list. The function
	59	* returns 0 on error and 1 on success. This is a generic routine to
	60	* all netdevices.
	61	*/
	62	static int netdev_boot_setup_add(char name, struct ifmap map)
	63	{
	64	struct netdev_boot_setup *s;
	65	int i;
	66
	67	s = dev_boot_setup;
	68	for (i = 0; i < NETDEV_BOOT_SETUP_MAX; i++) {
	69	if (s[i].name[0] == '\0' \|\| s[i].name[0] == ' ') {
	70	memset(s[i].name, 0, sizeof(s[i].name));
	71	strlcpy(s[i].name, name, IFNAMSIZ);
	72	memcpy(&s[i].map, map, sizeof(s[i].map));
	73	break;
	74	}
	75	}
	76
	77	return i >= NETDEV_BOOT_SETUP_MAX ? 0 : 1;
	78	}
	79
	80	/**
	81	* netdev_boot_setup_check - check boot time settings
	82	* @dev: the netdevice
	83	*
	84	* Check boot time settings for the device.
	85	* The found settings are set for the device to be used
	86	* later in the device probing.
	87	* Returns 0 if no settings found, 1 if they are.
	88	*/
	89	int netdev_boot_setup_check(struct net_device *dev)
	90	{
	91	struct netdev_boot_setup *s = dev_boot_setup;
	92	int i;
	93
	94	for (i = 0; i < NETDEV_BOOT_SETUP_MAX; i++) {
	95	if (s[i].name[0] != '\0' && s[i].name[0] != ' ' &&
	96	!strcmp(dev->name, s[i].name)) {
97	dev->irq = s[i].map.irq;
98	dev->base_addr = s[i].map.base_addr;
99	dev->mem_start = s[i].map.mem_start;
100	dev->mem_end = s[i].map.mem_end;
101	return 1;
102	}
103	}
104	return 0;
105	}
106	EXPORT_SYMBOL(netdev_boot_setup_check);
107
108	/**
109	* netdev_boot_base - get address from boot time settings
110	* @prefix: prefix for network device
111	* @unit: id for network device
112	*
113	* Check boot time settings for the base address of device.
114	* The found settings are set for the device to be used
115	* later in the device probing.
116	* Returns 0 if no settings found.
117	*/
118	static unsigned long netdev_boot_base(const char *prefix, int unit)
119	{
120	const struct netdev_boot_setup *s = dev_boot_setup;
121	char name[IFNAMSIZ];
122	int i;
123
124	sprintf(name, "%s%d", prefix, unit);
125
126	/*
127	* If device already registered then return base of 1
128	* to indicate not to probe for this interface
129	*/
130	if (__dev_get_by_name(&init_net, name))
131	return 1;
132
133	for (i = 0; i < NETDEV_BOOT_SETUP_MAX; i++)
134	if (!strcmp(name, s[i].name))
135	return s[i].map.base_addr;
136	return 0;
137	}
138
139	/*
140	* Saves at boot time configured settings for any netdevice.
141	*/
142	static int __init netdev_boot_setup(char *str)
143	{
144	int ints[5];
145	struct ifmap map;
146
147	str = get_options(str, ARRAY_SIZE(ints), ints);
148	if (!str \|\| !*str)
149	return 0;
150
151	/* Save settings */
152	memset(&map, 0, sizeof(map));
153	if (ints[0] > 0)
154	map.irq = ints[1];
155	if (ints[0] > 1)
156	map.base_addr = ints[2];
157	if (ints[0] > 2)
158	map.mem_start = ints[3];
159	if (ints[0] > 3)
160	map.mem_end = ints[4];
161
162	/* Add new entry to the list */
163	return netdev_boot_setup_add(str, &map);
164	}
165
166	__setup("netdev=", netdev_boot_setup);
167
168	static int __init ether_boot_setup(char *str)
169	{
170	return netdev_boot_setup(str);
171	}
172	__setup("ether=", ether_boot_setup);
173
174
1da177e4	175	/* A unified ethernet device probe. This is the easiest way to have every
6104503c AG	176	* ethernet adaptor have the name "eth[0123...]".
6104503c AG	177	*/
1da177e4	178
1da177e4 LT	179	struct devprobe2 {
	180	struct net_device (probe)(int unit);
	181	int status; /* non-zero if autoprobe has failed */
	182	};
	183
	184	static int __init probe_list2(int unit, struct devprobe2 *p, int autoprobe)
	185	{
	186	struct net_device *dev;
6104503c	187
1da177e4 LT	188	for (; p->probe; p++) {
	189	if (autoprobe && p->status)
	190	continue;
	191	dev = p->probe(unit);
	192	if (!IS_ERR(dev))
	193	return 0;
	194	if (autoprobe)
	195	p->status = PTR_ERR(dev);
	196	}
	197	return -ENODEV;
	198	}
	199
6104503c	200	/* ISA probes that touch addresses < 0x400 (including those that also
a5e371f6	201	* look for EISA/PCI cards in addition to ISA cards).
1da177e4 LT	202	*/
1da177e4 LT	203	static struct devprobe2 isa_probes[] __initdata = {
1da177e4 LT	204	#ifdef CONFIG_3C515
	205	{tc515_probe, 0},
	206	#endif
6aa20a22	207	#ifdef CONFIG_ULTRA
1da177e4 LT	208	{ultra_probe, 0},
1da177e4 LT	209	#endif
6aa20a22	210	#ifdef CONFIG_WD80x3
1da177e4 LT	211	{wd_probe, 0},
1da177e4 LT	212	#endif
dd9589c7	213	#if defined(CONFIG_NE2000) /* ISA (use ne2k-pci for PCI cards) */
1da177e4 LT	214	{ne_probe, 0},
	215	#endif
	216	#ifdef CONFIG_LANCE /* ISA/VLB (use pcnet32 for PCI cards) */
	217	{lance_probe, 0},
	218	#endif
	219	#ifdef CONFIG_SMC9194
	220	{smc_init, 0},
	221	#endif
47fd22f2	222	#ifdef CONFIG_CS89x0_ISA
6104503c	223	{cs89x0_probe, 0},
1da177e4	224	#endif
1da177e4 LT	225	#ifdef CONFIG_NI65
	226	{ni65_probe, 0},
	227	#endif
	228	{NULL, 0},
	229	};
	230
6104503c	231	/* Unified ethernet device probe, segmented per architecture and
1da177e4 LT	232	* per bus interface. This drives the legacy devices only for now.
1da177e4 LT	233	*/
6aa20a22	234
1da177e4 LT	235	static void __init ethif_probe2(int unit)
	236	{
	237	unsigned long base_addr = netdev_boot_base("eth", unit);
	238
	239	if (base_addr == 1)
	240	return;
	241
e179d78e	242	probe_list2(unit, isa_probes, base_addr == 0);
1da177e4 LT	243	}
1da177e4 LT	244
1da177e4 LT	245	/* Statically configured drivers -- order matters here. */
	246	static int __init net_olddevs_init(void)
	247	{
	248	int num;
	249
1da177e4 LT	250	for (num = 0; num < 8; ++num)
	251	ethif_probe2(num);
	252
	253	#ifdef CONFIG_COPS
	254	cops_probe(0);
	255	cops_probe(1);
	256	cops_probe(2);
	257	#endif
1da177e4 LT	258
	259	return 0;
	260	}
	261
	262	device_initcall(net_olddevs_init);