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