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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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90abdc3b97
Instead of io_req_t, drivers are now requested to fill out struct pcmcia_device *p_dev->resource[0,1] for up to two ioport ranges. After a call to pcmcia_request_io(), the ports found there are reserved, after calling pcmcia_request_configuration(), they may be used. CC: netdev@vger.kernel.org CC: linux-wireless@vger.kernel.org CC: linux-ide@vger.kernel.org CC: linux-usb@vger.kernel.org CC: laforge@gnumonks.org CC: linux-mtd@lists.infradead.org CC: alsa-devel@alsa-project.org CC: linux-serial@vger.kernel.org CC: Michael Buesch <mb@bu3sch.de> Acked-by: Marcel Holtmann <marcel@holtmann.org> (for drivers/bluetooth/) Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
245 lines
6.7 KiB
C
245 lines
6.7 KiB
C
/* $Id: avm_cs.c,v 1.4.6.3 2001/09/23 22:24:33 kai Exp $
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*
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* A PCMCIA client driver for AVM B1/M1/M2
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*
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* Copyright 1999 by Carsten Paeth <calle@calle.de>
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*
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* This software may be used and distributed according to the terms
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* of the GNU General Public License, incorporated herein by reference.
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*
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/ptrace.h>
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#include <linux/string.h>
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#include <linux/tty.h>
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#include <linux/serial.h>
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#include <linux/major.h>
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#include <asm/io.h>
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#include <asm/system.h>
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#include <pcmcia/cs.h>
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#include <pcmcia/cistpl.h>
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#include <pcmcia/ciscode.h>
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#include <pcmcia/ds.h>
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#include <pcmcia/cisreg.h>
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#include <linux/skbuff.h>
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#include <linux/capi.h>
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#include <linux/b1lli.h>
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#include <linux/b1pcmcia.h>
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/*====================================================================*/
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MODULE_DESCRIPTION("CAPI4Linux: PCMCIA client driver for AVM B1/M1/M2");
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MODULE_AUTHOR("Carsten Paeth");
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MODULE_LICENSE("GPL");
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/*====================================================================*/
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/*
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The event() function is this driver's Card Services event handler.
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It will be called by Card Services when an appropriate card status
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event is received. The config() and release() entry points are
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used to configure or release a socket, in response to card insertion
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and ejection events. They are invoked from the skeleton event
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handler.
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*/
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static int avmcs_config(struct pcmcia_device *link);
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static void avmcs_release(struct pcmcia_device *link);
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/*
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The attach() and detach() entry points are used to create and destroy
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"instances" of the driver, where each instance represents everything
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needed to manage one actual PCMCIA card.
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*/
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static void avmcs_detach(struct pcmcia_device *p_dev);
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/*======================================================================
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avmcs_attach() creates an "instance" of the driver, allocating
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local data structures for one device. The device is registered
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with Card Services.
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The dev_link 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 avmcs_probe(struct pcmcia_device *p_dev)
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{
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/* The io structure describes IO port mapping */
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p_dev->resource[0]->end = 16;
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p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
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/* General socket configuration */
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p_dev->conf.Attributes = CONF_ENABLE_IRQ;
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p_dev->conf.IntType = INT_MEMORY_AND_IO;
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p_dev->conf.ConfigIndex = 1;
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p_dev->conf.Present = PRESENT_OPTION;
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return avmcs_config(p_dev);
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} /* avmcs_attach */
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/*======================================================================
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This deletes a driver "instance". The device is de-registered
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with Card Services. If it has been released, all local data
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structures are freed. Otherwise, the structures will be freed
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when the device is released.
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======================================================================*/
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static void avmcs_detach(struct pcmcia_device *link)
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{
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avmcs_release(link);
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} /* avmcs_detach */
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/*======================================================================
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avmcs_config() is scheduled to run after a CARD_INSERTION event
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is received, to configure the PCMCIA socket, and to make the
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ethernet device available to the system.
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======================================================================*/
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static int avmcs_configcheck(struct pcmcia_device *p_dev,
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cistpl_cftable_entry_t *cf,
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cistpl_cftable_entry_t *dflt,
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unsigned int vcc,
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void *priv_data)
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{
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if (cf->io.nwin <= 0)
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return -ENODEV;
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p_dev->resource[0]->start = cf->io.win[0].base;
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p_dev->resource[0]->end = cf->io.win[0].len;
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return pcmcia_request_io(p_dev);
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}
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static int avmcs_config(struct pcmcia_device *link)
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{
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int i = -1;
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char devname[128];
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int cardtype;
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int (*addcard)(unsigned int port, unsigned irq);
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devname[0] = 0;
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if (link->prod_id[1])
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strlcpy(devname, link->prod_id[1], sizeof(devname));
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/*
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* find IO port
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*/
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if (pcmcia_loop_config(link, avmcs_configcheck, NULL))
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return -ENODEV;
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do {
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if (!link->irq) {
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/* undo */
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pcmcia_disable_device(link);
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break;
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}
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/*
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* configure the PCMCIA socket
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*/
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i = pcmcia_request_configuration(link, &link->conf);
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if (i != 0) {
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pcmcia_disable_device(link);
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break;
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}
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} while (0);
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if (devname[0]) {
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char *s = strrchr(devname, ' ');
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if (!s)
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s = devname;
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else s++;
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if (strcmp("M1", s) == 0) {
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cardtype = AVM_CARDTYPE_M1;
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} else if (strcmp("M2", s) == 0) {
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cardtype = AVM_CARDTYPE_M2;
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} else {
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cardtype = AVM_CARDTYPE_B1;
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}
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} else
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cardtype = AVM_CARDTYPE_B1;
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/* If any step failed, release any partially configured state */
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if (i != 0) {
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avmcs_release(link);
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return -ENODEV;
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}
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switch (cardtype) {
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case AVM_CARDTYPE_M1: addcard = b1pcmcia_addcard_m1; break;
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case AVM_CARDTYPE_M2: addcard = b1pcmcia_addcard_m2; break;
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default:
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case AVM_CARDTYPE_B1: addcard = b1pcmcia_addcard_b1; break;
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}
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if ((i = (*addcard)(link->resource[0]->start, link->irq)) < 0) {
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dev_err(&link->dev,
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"avm_cs: failed to add AVM-Controller at i/o %#x, irq %d\n",
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(unsigned int) link->resource[0]->start, link->irq);
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avmcs_release(link);
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return -ENODEV;
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}
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return 0;
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} /* avmcs_config */
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/*======================================================================
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After a card is removed, avmcs_release() will unregister the net
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device, and release the PCMCIA configuration. If the device is
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still open, this will be postponed until it is closed.
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======================================================================*/
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static void avmcs_release(struct pcmcia_device *link)
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{
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b1pcmcia_delcard(link->resource[0]->start, link->irq);
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pcmcia_disable_device(link);
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} /* avmcs_release */
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static struct pcmcia_device_id avmcs_ids[] = {
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PCMCIA_DEVICE_PROD_ID12("AVM", "ISDN-Controller B1", 0x95d42008, 0x845dc335),
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PCMCIA_DEVICE_PROD_ID12("AVM", "Mobile ISDN-Controller M1", 0x95d42008, 0x81e10430),
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PCMCIA_DEVICE_PROD_ID12("AVM", "Mobile ISDN-Controller M2", 0x95d42008, 0x18e8558a),
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PCMCIA_DEVICE_NULL
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};
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MODULE_DEVICE_TABLE(pcmcia, avmcs_ids);
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static struct pcmcia_driver avmcs_driver = {
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.owner = THIS_MODULE,
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.drv = {
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.name = "avm_cs",
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},
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.probe = avmcs_probe,
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.remove = avmcs_detach,
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.id_table = avmcs_ids,
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};
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static int __init avmcs_init(void)
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{
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return pcmcia_register_driver(&avmcs_driver);
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}
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static void __exit avmcs_exit(void)
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{
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pcmcia_unregister_driver(&avmcs_driver);
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}
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module_init(avmcs_init);
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module_exit(avmcs_exit);
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