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authorArnd Bergmann <arnd@arndb.de>2021-08-03 13:40:46 +0200
committerDavid S. Miller <davem@davemloft.net>2021-08-03 13:05:26 +0100
commit5ea2f5ffde39251115ef9a566262fb9e52b91cb7 (patch)
tree59a778fe579fd0d91d07d18910775a8755d16e43 /drivers/net/Space.c
parentf8ade8dddb167eecd369eb3b185a5772c2d7d09b (diff)
move netdev_boot_setup into Space.c
This is now only used by a handful of old ISA drivers, and can be moved into the file they already all depend on. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/Space.c')
-rw-r--r--drivers/net/Space.c142
1 files changed, 142 insertions, 0 deletions
diff --git a/drivers/net/Space.c b/drivers/net/Space.c
index a03559f23295..f40f2e38682f 100644
--- a/drivers/net/Space.c
+++ b/drivers/net/Space.c
@@ -30,6 +30,148 @@
#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...]".
*/