Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/net/wan/cycx_main.c b/drivers/net/wan/cycx_main.c
new file mode 100644
index 0000000..7b48064
--- /dev/null
+++ b/drivers/net/wan/cycx_main.c
@@ -0,0 +1,351 @@
+/*
+* cycx_main.c Cyclades Cyclom 2X WAN Link Driver. Main module.
+*
+* Author: Arnaldo Carvalho de Melo <acme@conectiva.com.br>
+*
+* Copyright: (c) 1998-2003 Arnaldo Carvalho de Melo
+*
+* Based on sdlamain.c by Gene Kozin <genek@compuserve.com> &
+* Jaspreet Singh <jaspreet@sangoma.com>
+*
+* This program is free software; you can redistribute it and/or
+* modify it under the terms of the GNU General Public License
+* as published by the Free Software Foundation; either version
+* 2 of the License, or (at your option) any later version.
+* ============================================================================
+* Please look at the bitkeeper changelog (or any other scm tool that ends up
+* importing bitkeeper changelog or that replaces bitkeeper in the future as
+* main tool for linux development).
+*
+* 2001/05/09 acme Fix MODULE_DESC for debug, .bss nitpicks,
+* some cleanups
+* 2000/07/13 acme remove useless #ifdef MODULE and crap
+* #if KERNEL_VERSION > blah
+* 2000/07/06 acme __exit at cyclomx_cleanup
+* 2000/04/02 acme dprintk and cycx_debug
+* module_init/module_exit
+* 2000/01/21 acme rename cyclomx_open to cyclomx_mod_inc_use_count
+* and cyclomx_close to cyclomx_mod_dec_use_count
+* 2000/01/08 acme cleanup
+* 1999/11/06 acme cycx_down back to life (it needs to be
+* called to iounmap the dpmbase)
+* 1999/08/09 acme removed references to enable_tx_int
+* use spinlocks instead of cli/sti in
+* cyclomx_set_state
+* 1999/05/19 acme works directly linked into the kernel
+* init_waitqueue_head for 2.3.* kernel
+* 1999/05/18 acme major cleanup (polling not needed), etc
+* 1998/08/28 acme minor cleanup (ioctls for firmware deleted)
+* queue_task activated
+* 1998/08/08 acme Initial version.
+*/
+
+#include <linux/config.h> /* OS configuration options */
+#include <linux/stddef.h> /* offsetof(), etc. */
+#include <linux/errno.h> /* return codes */
+#include <linux/string.h> /* inline memset(), etc. */
+#include <linux/slab.h> /* kmalloc(), kfree() */
+#include <linux/kernel.h> /* printk(), and other useful stuff */
+#include <linux/module.h> /* support for loadable modules */
+#include <linux/ioport.h> /* request_region(), release_region() */
+#include <linux/wanrouter.h> /* WAN router definitions */
+#include <linux/cyclomx.h> /* cyclomx common user API definitions */
+#include <linux/init.h> /* __init (when not using as a module) */
+
+unsigned int cycx_debug;
+
+MODULE_AUTHOR("Arnaldo Carvalho de Melo");
+MODULE_DESCRIPTION("Cyclom 2X Sync Card Driver.");
+MODULE_LICENSE("GPL");
+module_param(cycx_debug, int, 0);
+MODULE_PARM_DESC(cycx_debug, "cyclomx debug level");
+
+/* Defines & Macros */
+
+#define CYCX_DRV_VERSION 0 /* version number */
+#define CYCX_DRV_RELEASE 11 /* release (minor version) number */
+#define CYCX_MAX_CARDS 1 /* max number of adapters */
+
+#define CONFIG_CYCX_CARDS 1
+
+/* Function Prototypes */
+
+/* WAN link driver entry points */
+static int cycx_wan_setup(struct wan_device *wandev, wandev_conf_t *conf);
+static int cycx_wan_shutdown(struct wan_device *wandev);
+
+/* Miscellaneous functions */
+static irqreturn_t cycx_isr(int irq, void *dev_id, struct pt_regs *regs);
+
+/* Global Data
+ * Note: All data must be explicitly initialized!!!
+ */
+
+/* private data */
+static char cycx_drvname[] = "cyclomx";
+static char cycx_fullname[] = "CYCLOM 2X(tm) Sync Card Driver";
+static char cycx_copyright[] = "(c) 1998-2003 Arnaldo Carvalho de Melo "
+ "<acme@conectiva.com.br>";
+static int cycx_ncards = CONFIG_CYCX_CARDS;
+static struct cycx_device *cycx_card_array; /* adapter data space */
+
+/* Kernel Loadable Module Entry Points */
+
+/*
+ * Module 'insert' entry point.
+ * o print announcement
+ * o allocate adapter data space
+ * o initialize static data
+ * o register all cards with WAN router
+ * o calibrate Cyclom 2X shared memory access delay.
+ *
+ * Return: 0 Ok
+ * < 0 error.
+ * Context: process
+ */
+int __init cycx_init(void)
+{
+ int cnt, err = -ENOMEM;
+
+ printk(KERN_INFO "%s v%u.%u %s\n",
+ cycx_fullname, CYCX_DRV_VERSION, CYCX_DRV_RELEASE,
+ cycx_copyright);
+
+ /* Verify number of cards and allocate adapter data space */
+ cycx_ncards = min_t(int, cycx_ncards, CYCX_MAX_CARDS);
+ cycx_ncards = max_t(int, cycx_ncards, 1);
+ cycx_card_array = kmalloc(sizeof(struct cycx_device) * cycx_ncards,
+ GFP_KERNEL);
+ if (!cycx_card_array)
+ goto out;
+
+ memset(cycx_card_array, 0, sizeof(struct cycx_device) * cycx_ncards);
+
+ /* Register adapters with WAN router */
+ for (cnt = 0; cnt < cycx_ncards; ++cnt) {
+ struct cycx_device *card = &cycx_card_array[cnt];
+ struct wan_device *wandev = &card->wandev;
+
+ sprintf(card->devname, "%s%d", cycx_drvname, cnt + 1);
+ wandev->magic = ROUTER_MAGIC;
+ wandev->name = card->devname;
+ wandev->private = card;
+ wandev->setup = cycx_wan_setup;
+ wandev->shutdown = cycx_wan_shutdown;
+ err = register_wan_device(wandev);
+
+ if (err) {
+ printk(KERN_ERR "%s: %s registration failed with "
+ "error %d!\n",
+ cycx_drvname, card->devname, err);
+ break;
+ }
+ }
+
+ err = -ENODEV;
+ if (!cnt) {
+ kfree(cycx_card_array);
+ goto out;
+ }
+ err = 0;
+ cycx_ncards = cnt; /* adjust actual number of cards */
+out: return err;
+}
+
+/*
+ * Module 'remove' entry point.
+ * o unregister all adapters from the WAN router
+ * o release all remaining system resources
+ */
+static void __exit cycx_exit(void)
+{
+ int i = 0;
+
+ for (; i < cycx_ncards; ++i) {
+ struct cycx_device *card = &cycx_card_array[i];
+ unregister_wan_device(card->devname);
+ }
+
+ kfree(cycx_card_array);
+}
+
+/* WAN Device Driver Entry Points */
+/*
+ * Setup/configure WAN link driver.
+ * o check adapter state
+ * o make sure firmware is present in configuration
+ * o allocate interrupt vector
+ * o setup Cyclom 2X hardware
+ * o call appropriate routine to perform protocol-specific initialization
+ *
+ * This function is called when router handles ROUTER_SETUP IOCTL. The
+ * configuration structure is in kernel memory (including extended data, if
+ * any).
+ */
+static int cycx_wan_setup(struct wan_device *wandev, wandev_conf_t *conf)
+{
+ int rc = -EFAULT;
+ struct cycx_device *card;
+ int irq;
+
+ /* Sanity checks */
+
+ if (!wandev || !wandev->private || !conf)
+ goto out;
+
+ card = wandev->private;
+ rc = -EBUSY;
+ if (wandev->state != WAN_UNCONFIGURED)
+ goto out;
+
+ rc = -EINVAL;
+ if (!conf->data_size || !conf->data) {
+ printk(KERN_ERR "%s: firmware not found in configuration "
+ "data!\n", wandev->name);
+ goto out;
+ }
+
+ if (conf->irq <= 0) {
+ printk(KERN_ERR "%s: can't configure without IRQ!\n",
+ wandev->name);
+ goto out;
+ }
+
+ /* Allocate IRQ */
+ irq = conf->irq == 2 ? 9 : conf->irq; /* IRQ2 -> IRQ9 */
+
+ if (request_irq(irq, cycx_isr, 0, wandev->name, card)) {
+ printk(KERN_ERR "%s: can't reserve IRQ %d!\n",
+ wandev->name, irq);
+ goto out;
+ }
+
+ /* Configure hardware, load firmware, etc. */
+ memset(&card->hw, 0, sizeof(card->hw));
+ card->hw.irq = irq;
+ card->hw.dpmsize = CYCX_WINDOWSIZE;
+ card->hw.fwid = CFID_X25_2X;
+ spin_lock_init(&card->lock);
+ init_waitqueue_head(&card->wait_stats);
+
+ rc = cycx_setup(&card->hw, conf->data, conf->data_size, conf->maddr);
+ if (rc)
+ goto out_irq;
+
+ /* Initialize WAN device data space */
+ wandev->irq = irq;
+ wandev->dma = wandev->ioport = 0;
+ wandev->maddr = (unsigned long)card->hw.dpmbase;
+ wandev->msize = card->hw.dpmsize;
+ wandev->hw_opt[2] = 0;
+ wandev->hw_opt[3] = card->hw.fwid;
+
+ /* Protocol-specific initialization */
+ switch (card->hw.fwid) {
+#ifdef CONFIG_CYCLOMX_X25
+ case CFID_X25_2X:
+ rc = cycx_x25_wan_init(card, conf);
+ break;
+#endif
+ default:
+ printk(KERN_ERR "%s: this firmware is not supported!\n",
+ wandev->name);
+ rc = -EINVAL;
+ }
+
+ if (rc) {
+ cycx_down(&card->hw);
+ goto out_irq;
+ }
+
+ rc = 0;
+out:
+ return rc;
+out_irq:
+ free_irq(irq, card);
+ goto out;
+}
+
+/*
+ * Shut down WAN link driver.
+ * o shut down adapter hardware
+ * o release system resources.
+ *
+ * This function is called by the router when device is being unregistered or
+ * when it handles ROUTER_DOWN IOCTL.
+ */
+static int cycx_wan_shutdown(struct wan_device *wandev)
+{
+ int ret = -EFAULT;
+ struct cycx_device *card;
+
+ /* sanity checks */
+ if (!wandev || !wandev->private)
+ goto out;
+
+ ret = 0;
+ if (wandev->state == WAN_UNCONFIGURED)
+ goto out;
+
+ card = wandev->private;
+ wandev->state = WAN_UNCONFIGURED;
+ cycx_down(&card->hw);
+ printk(KERN_INFO "%s: irq %d being freed!\n", wandev->name,
+ wandev->irq);
+ free_irq(wandev->irq, card);
+out: return ret;
+}
+
+/* Miscellaneous */
+/*
+ * Cyclom 2X Interrupt Service Routine.
+ * o acknowledge Cyclom 2X hardware interrupt.
+ * o call protocol-specific interrupt service routine, if any.
+ */
+static irqreturn_t cycx_isr(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct cycx_device *card = (struct cycx_device *)dev_id;
+
+ if (!card || card->wandev.state == WAN_UNCONFIGURED)
+ goto out;
+
+ if (card->in_isr) {
+ printk(KERN_WARNING "%s: interrupt re-entrancy on IRQ %d!\n",
+ card->devname, card->wandev.irq);
+ goto out;
+ }
+
+ if (card->isr)
+ card->isr(card);
+ return IRQ_HANDLED;
+out:
+ return IRQ_NONE;
+}
+
+/* Set WAN device state. */
+void cycx_set_state(struct cycx_device *card, int state)
+{
+ unsigned long flags;
+ char *string_state = NULL;
+
+ spin_lock_irqsave(&card->lock, flags);
+
+ if (card->wandev.state != state) {
+ switch (state) {
+ case WAN_CONNECTED:
+ string_state = "connected!";
+ break;
+ case WAN_DISCONNECTED:
+ string_state = "disconnected!";
+ break;
+ }
+ printk(KERN_INFO "%s: link %s\n", card->devname, string_state);
+ card->wandev.state = state;
+ }
+
+ card->state_tick = jiffies;
+ spin_unlock_irqrestore(&card->lock, flags);
+}
+
+module_init(cycx_init);
+module_exit(cycx_exit);