--- /dev/null
+ /*
+ * IPWireless 3G PCMCIA Network Driver
+ *
+ * Original code
+ * by Stephen Blackheath <stephen@blacksapphire.com>,
+ * Ben Martel <benm@symmetric.co.nz>
+ *
+ * Copyrighted as follows:
+ * Copyright (C) 2004 by Symmetric Systems Ltd (NZ)
+ *
+ * Various driver changes and rewrites, port to new kernels
+ * Copyright (C) 2006-2007 Jiri Kosina
+ *
+ * Misc code cleanups and updates
+ * Copyright (C) 2007 David Sterba
+ */
+
+ #include "hardware.h"
+ #include "network.h"
+ #include "main.h"
+ #include "tty.h"
+
+ #include <linux/delay.h>
+ #include <linux/init.h>
+ #include <linux/io.h>
+ #include <linux/kernel.h>
+ #include <linux/module.h>
+ #include <linux/sched.h>
+ #include <linux/slab.h>
+
+ #include <pcmcia/cisreg.h>
+ #include <pcmcia/device_id.h>
+ #include <pcmcia/ss.h>
+ #include <pcmcia/ds.h>
+
+ static struct pcmcia_device_id ipw_ids[] = {
+ PCMCIA_DEVICE_MANF_CARD(0x02f2, 0x0100),
+ PCMCIA_DEVICE_MANF_CARD(0x02f2, 0x0200),
+ PCMCIA_DEVICE_NULL
+ };
+ MODULE_DEVICE_TABLE(pcmcia, ipw_ids);
+
+ static void ipwireless_detach(struct pcmcia_device *link);
+
+ /*
+ * Module params
+ */
+ /* Debug mode: more verbose, print sent/recv bytes */
+ int ipwireless_debug;
+ int ipwireless_loopback;
+ int ipwireless_out_queue = 10;
+
+ module_param_named(debug, ipwireless_debug, int, 0);
+ module_param_named(loopback, ipwireless_loopback, int, 0);
+ module_param_named(out_queue, ipwireless_out_queue, int, 0);
+ MODULE_PARM_DESC(debug, "switch on debug messages [0]");
+ MODULE_PARM_DESC(loopback,
+ "debug: enable ras_raw channel [0]");
+ MODULE_PARM_DESC(out_queue, "debug: set size of outgoing PPP queue [10]");
+
+ /* Executes in process context. */
+ static void signalled_reboot_work(struct work_struct *work_reboot)
+ {
+ struct ipw_dev *ipw = container_of(work_reboot, struct ipw_dev,
+ work_reboot);
+ struct pcmcia_device *link = ipw->link;
+ pcmcia_reset_card(link->socket);
+ }
+
+ static void signalled_reboot_callback(void *callback_data)
+ {
+ struct ipw_dev *ipw = (struct ipw_dev *) callback_data;
+
+ /* Delegate to process context. */
+ schedule_work(&ipw->work_reboot);
+ }
+
+ static int ipwireless_probe(struct pcmcia_device *p_dev, void *priv_data)
+ {
+ struct ipw_dev *ipw = priv_data;
- struct resource *io_resource;
+ int ret;
+
+ p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
+ p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
+
+ /* 0x40 causes it to generate level mode interrupts. */
+ /* 0x04 enables IREQ pin. */
+ p_dev->config_index |= 0x44;
+ p_dev->io_lines = 16;
+ ret = pcmcia_request_io(p_dev);
+ if (ret)
+ return ret;
+
- io_resource = request_region(p_dev->resource[0]->start,
- resource_size(p_dev->resource[0]),
- IPWIRELESS_PCCARD_NAME);
++ if (!request_region(p_dev->resource[0]->start,
++ resource_size(p_dev->resource[0]),
++ IPWIRELESS_PCCARD_NAME)) {
++ ret = -EBUSY;
++ goto exit;
++ }
+
+ p_dev->resource[2]->flags |=
+ WIN_DATA_WIDTH_16 | WIN_MEMORY_TYPE_CM | WIN_ENABLE;
+
+ ret = pcmcia_request_window(p_dev, p_dev->resource[2], 0);
+ if (ret != 0)
+ goto exit1;
+
+ ret = pcmcia_map_mem_page(p_dev, p_dev->resource[2], p_dev->card_addr);
+ if (ret != 0)
- goto exit2;
++ goto exit1;
+
+ ipw->is_v2_card = resource_size(p_dev->resource[2]) == 0x100;
+
- ipw->attr_memory = ioremap(p_dev->resource[2]->start,
++ ipw->common_memory = ioremap(p_dev->resource[2]->start,
+ resource_size(p_dev->resource[2]));
- request_mem_region(p_dev->resource[2]->start,
- resource_size(p_dev->resource[2]),
- IPWIRELESS_PCCARD_NAME);
++ if (!request_mem_region(p_dev->resource[2]->start,
++ resource_size(p_dev->resource[2]),
++ IPWIRELESS_PCCARD_NAME)) {
++ ret = -EBUSY;
++ goto exit2;
++ }
+
+ p_dev->resource[3]->flags |= WIN_DATA_WIDTH_16 | WIN_MEMORY_TYPE_AM |
+ WIN_ENABLE;
+ p_dev->resource[3]->end = 0; /* this used to be 0x1000 */
+ ret = pcmcia_request_window(p_dev, p_dev->resource[3], 0);
+ if (ret != 0)
- goto exit2;
++ goto exit3;
+
+ ret = pcmcia_map_mem_page(p_dev, p_dev->resource[3], 0);
+ if (ret != 0)
+ goto exit3;
+
+ ipw->attr_memory = ioremap(p_dev->resource[3]->start,
+ resource_size(p_dev->resource[3]));
- request_mem_region(p_dev->resource[3]->start,
- resource_size(p_dev->resource[3]),
- IPWIRELESS_PCCARD_NAME);
++ if (!request_mem_region(p_dev->resource[3]->start,
++ resource_size(p_dev->resource[3]),
++ IPWIRELESS_PCCARD_NAME)) {
++ ret = -EBUSY;
++ goto exit4;
++ }
+
+ return 0;
+
++exit4:
++ iounmap(ipw->attr_memory);
+ exit3:
++ release_mem_region(p_dev->resource[2]->start,
++ resource_size(p_dev->resource[2]));
+ exit2:
- if (ipw->common_memory) {
- release_mem_region(p_dev->resource[2]->start,
- resource_size(p_dev->resource[2]));
- iounmap(ipw->common_memory);
- }
++ iounmap(ipw->common_memory);
+ exit1:
- release_resource(io_resource);
++ release_region(p_dev->resource[0]->start,
++ resource_size(p_dev->resource[0]));
++exit:
+ pcmcia_disable_device(p_dev);
- return -1;
++ return ret;
+ }
+
+ static int config_ipwireless(struct ipw_dev *ipw)
+ {
+ struct pcmcia_device *link = ipw->link;
+ int ret = 0;
+
+ ipw->is_v2_card = 0;
+ link->config_flags |= CONF_AUTO_SET_IO | CONF_AUTO_SET_IOMEM |
+ CONF_ENABLE_IRQ;
+
+ ret = pcmcia_loop_config(link, ipwireless_probe, ipw);
+ if (ret != 0)
+ return ret;
+
+ INIT_WORK(&ipw->work_reboot, signalled_reboot_work);
+
+ ipwireless_init_hardware_v1(ipw->hardware, link->resource[0]->start,
+ ipw->attr_memory, ipw->common_memory,
+ ipw->is_v2_card, signalled_reboot_callback,
+ ipw);
+
+ ret = pcmcia_request_irq(link, ipwireless_interrupt);
+ if (ret != 0)
+ goto exit;
+
+ printk(KERN_INFO IPWIRELESS_PCCARD_NAME ": Card type %s\n",
+ ipw->is_v2_card ? "V2/V3" : "V1");
+ printk(KERN_INFO IPWIRELESS_PCCARD_NAME
+ ": I/O ports %pR, irq %d\n", link->resource[0],
+ (unsigned int) link->irq);
+ if (ipw->attr_memory && ipw->common_memory)
+ printk(KERN_INFO IPWIRELESS_PCCARD_NAME
+ ": attr memory %pR, common memory %pR\n",
+ link->resource[3],
+ link->resource[2]);
+
+ ipw->network = ipwireless_network_create(ipw->hardware);
+ if (!ipw->network)
+ goto exit;
+
+ ipw->tty = ipwireless_tty_create(ipw->hardware, ipw->network);
+ if (!ipw->tty)
+ goto exit;
+
+ ipwireless_init_hardware_v2_v3(ipw->hardware);
+
+ /*
+ * Do the RequestConfiguration last, because it enables interrupts.
+ * Then we don't get any interrupts before we're ready for them.
+ */
+ ret = pcmcia_enable_device(link);
+ if (ret != 0)
+ goto exit;
+
+ return 0;
+
+ exit:
+ if (ipw->common_memory) {
+ release_mem_region(link->resource[2]->start,
+ resource_size(link->resource[2]));
+ iounmap(ipw->common_memory);
+ }
+ if (ipw->attr_memory) {
+ release_mem_region(link->resource[3]->start,
+ resource_size(link->resource[3]));
+ iounmap(ipw->attr_memory);
+ }
+ pcmcia_disable_device(link);
+ return -1;
+ }
+
+ static void release_ipwireless(struct ipw_dev *ipw)
+ {
++ release_region(ipw->link->resource[0]->start,
++ resource_size(ipw->link->resource[0]));
+ if (ipw->common_memory) {
+ release_mem_region(ipw->link->resource[2]->start,
+ resource_size(ipw->link->resource[2]));
+ iounmap(ipw->common_memory);
+ }
+ if (ipw->attr_memory) {
+ release_mem_region(ipw->link->resource[3]->start,
+ resource_size(ipw->link->resource[3]));
+ iounmap(ipw->attr_memory);
+ }
+ pcmcia_disable_device(ipw->link);
+ }
+
+ /*
+ * ipwireless_attach() creates an "instance" of the driver, allocating
+ * local data structures for one device (one interface). The device
+ * is registered with Card Services.
+ *
+ * The pcmcia_device structure is initialized, but we don't actually
+ * configure the card at this point -- we wait until we receive a
+ * card insertion event.
+ */
+ static int ipwireless_attach(struct pcmcia_device *link)
+ {
+ struct ipw_dev *ipw;
+ int ret;
+
+ ipw = kzalloc(sizeof(struct ipw_dev), GFP_KERNEL);
+ if (!ipw)
+ return -ENOMEM;
+
+ ipw->link = link;
+ link->priv = ipw;
+
+ ipw->hardware = ipwireless_hardware_create();
+ if (!ipw->hardware) {
+ kfree(ipw);
+ return -ENOMEM;
+ }
+ /* RegisterClient will call config_ipwireless */
+
+ ret = config_ipwireless(ipw);
+
+ if (ret != 0) {
+ ipwireless_detach(link);
+ return ret;
+ }
+
+ return 0;
+ }
+
+ /*
+ * This deletes a driver "instance". The device is de-registered with
+ * Card Services. If it has been released, all local data structures
+ * are freed. Otherwise, the structures will be freed when the device
+ * is released.
+ */
+ static void ipwireless_detach(struct pcmcia_device *link)
+ {
+ struct ipw_dev *ipw = link->priv;
+
+ release_ipwireless(ipw);
+
+ if (ipw->tty != NULL)
+ ipwireless_tty_free(ipw->tty);
+ if (ipw->network != NULL)
+ ipwireless_network_free(ipw->network);
+ if (ipw->hardware != NULL)
+ ipwireless_hardware_free(ipw->hardware);
+ kfree(ipw);
+ }
+
+ static struct pcmcia_driver me = {
+ .owner = THIS_MODULE,
+ .probe = ipwireless_attach,
+ .remove = ipwireless_detach,
+ .name = IPWIRELESS_PCCARD_NAME,
+ .id_table = ipw_ids
+ };
+
+ /*
+ * Module insertion : initialisation of the module.
+ * Register the card with cardmgr...
+ */
+ static int __init init_ipwireless(void)
+ {
+ int ret;
+
+ ret = ipwireless_tty_init();
+ if (ret != 0)
+ return ret;
+
+ ret = pcmcia_register_driver(&me);
+ if (ret != 0)
+ ipwireless_tty_release();
+
+ return ret;
+ }
+
+ /*
+ * Module removal
+ */
+ static void __exit exit_ipwireless(void)
+ {
+ pcmcia_unregister_driver(&me);
+ ipwireless_tty_release();
+ }
+
+ module_init(init_ipwireless);
+ module_exit(exit_ipwireless);
+
+ MODULE_AUTHOR(IPWIRELESS_PCMCIA_AUTHOR);
+ MODULE_DESCRIPTION(IPWIRELESS_PCCARD_NAME " " IPWIRELESS_PCMCIA_VERSION);
+ MODULE_LICENSE("GPL");
projects / linux-flexiantxendom0.git / commitdiff