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![Dominik Brodowski](/assets/img/avatar_default.png)
Unify the EVENT_CARD_INSERTION and "attach" callbacks to one unified probe() callback. As all in-kernel drivers are changed to this new callback, there will be no temporary backwards-compatibility. Inside a probe() function, each driver _must_ set struct pcmcia_device *p_dev->instance and instance->handle correctly. With these patches, the basic driver interface for 16-bit PCMCIA drivers now has the classic four callbacks known also from other buses: int (*probe) (struct pcmcia_device *dev); void (*remove) (struct pcmcia_device *dev); int (*suspend) (struct pcmcia_device *dev); int (*resume) (struct pcmcia_device *dev); Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
551 lines
18 KiB
C
551 lines
18 KiB
C
/*======================================================================
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A Sedlbauer PCMCIA client driver
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This driver is for the Sedlbauer Speed Star and Speed Star II,
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which are ISDN PCMCIA Cards.
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The contents of this file are subject to the Mozilla Public
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License Version 1.1 (the "License"); you may not use this file
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except in compliance with the License. You may obtain a copy of
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the License at http://www.mozilla.org/MPL/
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Software distributed under the License is distributed on an "AS
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IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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implied. See the License for the specific language governing
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rights and limitations under the License.
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The initial developer of the original code is David A. Hinds
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<dahinds@users.sourceforge.net>. Portions created by David A. Hinds
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are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
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Modifications from dummy_cs.c are Copyright (C) 1999-2001 Marcus Niemann
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<maniemann@users.sourceforge.net>. All Rights Reserved.
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Alternatively, the contents of this file may be used under the
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terms of the GNU General Public License version 2 (the "GPL"), in
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which case the provisions of the GPL are applicable instead of the
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above. If you wish to allow the use of your version of this file
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only under the terms of the GPL and not to allow others to use
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your version of this file under the MPL, indicate your decision
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by deleting the provisions above and replace them with the notice
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and other provisions required by the GPL. If you do not delete
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the provisions above, a recipient may use your version of this
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file under either the MPL or the GPL.
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======================================================================*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/sched.h>
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#include <linux/ptrace.h>
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#include <linux/slab.h>
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#include <linux/string.h>
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#include <linux/timer.h>
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#include <linux/ioport.h>
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#include <asm/io.h>
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#include <asm/system.h>
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#include <pcmcia/cs_types.h>
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#include <pcmcia/cs.h>
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#include <pcmcia/cistpl.h>
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#include <pcmcia/cisreg.h>
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#include <pcmcia/ds.h>
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#include "hisax_cfg.h"
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MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for Sedlbauer cards");
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MODULE_AUTHOR("Marcus Niemann");
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MODULE_LICENSE("Dual MPL/GPL");
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/*
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All the PCMCIA modules use PCMCIA_DEBUG to control debugging. If
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you do not define PCMCIA_DEBUG at all, all the debug code will be
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left out. If you compile with PCMCIA_DEBUG=0, the debug code will
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be present but disabled -- but it can then be enabled for specific
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modules at load time with a 'pc_debug=#' option to insmod.
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*/
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#ifdef PCMCIA_DEBUG
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static int pc_debug = PCMCIA_DEBUG;
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module_param(pc_debug, int, 0);
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#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args);
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static char *version =
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"sedlbauer_cs.c 1.1a 2001/01/28 15:04:04 (M.Niemann)";
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#else
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#define DEBUG(n, args...)
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#endif
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/*====================================================================*/
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/* Parameters that can be set with 'insmod' */
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static int protocol = 2; /* EURO-ISDN Default */
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module_param(protocol, int, 0);
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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
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insertion and ejection events. They are invoked from the sedlbauer
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event handler.
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*/
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static void sedlbauer_config(dev_link_t *link);
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static void sedlbauer_release(dev_link_t *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 sedlbauer_detach(struct pcmcia_device *p_dev);
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/*
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You'll also need to prototype all the functions that will actually
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be used to talk to your device. See 'memory_cs' for a good example
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of a fully self-sufficient driver; the other drivers rely more or
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less on other parts of the kernel.
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*/
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/*
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A driver needs to provide a dev_node_t structure for each device
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on a card. In some cases, there is only one device per card (for
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example, ethernet cards, modems). In other cases, there may be
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many actual or logical devices (SCSI adapters, memory cards with
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multiple partitions). The dev_node_t structures need to be kept
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in a linked list starting at the 'dev' field of a dev_link_t
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structure. We allocate them in the card's private data structure,
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because they generally shouldn't be allocated dynamically.
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In this case, we also provide a flag to indicate if a device is
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"stopped" due to a power management event, or card ejection. The
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device IO routines can use a flag like this to throttle IO to a
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card that is not ready to accept it.
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*/
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typedef struct local_info_t {
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dev_link_t link;
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dev_node_t node;
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int stop;
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int cardnr;
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} local_info_t;
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/*======================================================================
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sedlbauer_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 sedlbauer_attach(struct pcmcia_device *p_dev)
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{
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local_info_t *local;
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dev_link_t *link;
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DEBUG(0, "sedlbauer_attach()\n");
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/* Allocate space for private device-specific data */
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local = kmalloc(sizeof(local_info_t), GFP_KERNEL);
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if (!local) return -ENOMEM;
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memset(local, 0, sizeof(local_info_t));
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local->cardnr = -1;
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link = &local->link; link->priv = local;
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/* Interrupt setup */
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link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
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link->irq.IRQInfo1 = IRQ_LEVEL_ID;
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link->irq.Handler = NULL;
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/*
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General socket configuration defaults can go here. In this
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client, we assume very little, and rely on the CIS for almost
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everything. In most clients, many details (i.e., number, sizes,
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and attributes of IO windows) are fixed by the nature of the
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device, and can be hard-wired here.
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*/
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/* from old sedl_cs
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*/
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/* The io structure describes IO port mapping */
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link->io.NumPorts1 = 8;
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link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
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link->io.IOAddrLines = 3;
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link->conf.Attributes = 0;
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link->conf.Vcc = 50;
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link->conf.IntType = INT_MEMORY_AND_IO;
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link->handle = p_dev;
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p_dev->instance = link;
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link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
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sedlbauer_config(link);
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return 0;
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} /* sedlbauer_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 sedlbauer_detach(struct pcmcia_device *p_dev)
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{
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dev_link_t *link = dev_to_instance(p_dev);
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DEBUG(0, "sedlbauer_detach(0x%p)\n", link);
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if (link->state & DEV_CONFIG) {
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((local_info_t *)link->priv)->stop = 1;
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sedlbauer_release(link);
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}
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/* This points to the parent local_info_t struct */
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kfree(link->priv);
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} /* sedlbauer_detach */
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/*======================================================================
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sedlbauer_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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device available to the system.
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======================================================================*/
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#define CS_CHECK(fn, ret) \
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do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
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static void sedlbauer_config(dev_link_t *link)
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{
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client_handle_t handle = link->handle;
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local_info_t *dev = link->priv;
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tuple_t tuple;
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cisparse_t parse;
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int last_fn, last_ret;
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u8 buf[64];
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config_info_t conf;
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win_req_t req;
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memreq_t map;
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IsdnCard_t icard;
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DEBUG(0, "sedlbauer_config(0x%p)\n", link);
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/*
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This reads the card's CONFIG tuple to find its configuration
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registers.
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*/
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tuple.DesiredTuple = CISTPL_CONFIG;
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tuple.Attributes = 0;
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tuple.TupleData = buf;
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tuple.TupleDataMax = sizeof(buf);
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tuple.TupleOffset = 0;
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CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
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CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
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CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
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link->conf.ConfigBase = parse.config.base;
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link->conf.Present = parse.config.rmask[0];
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/* Configure card */
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link->state |= DEV_CONFIG;
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/* Look up the current Vcc */
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CS_CHECK(GetConfigurationInfo, pcmcia_get_configuration_info(handle, &conf));
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link->conf.Vcc = conf.Vcc;
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/*
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In this loop, we scan the CIS for configuration table entries,
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each of which describes a valid card configuration, including
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voltage, IO window, memory window, and interrupt settings.
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We make no assumptions about the card to be configured: we use
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just the information available in the CIS. In an ideal world,
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this would work for any PCMCIA card, but it requires a complete
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and accurate CIS. In practice, a driver usually "knows" most of
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these things without consulting the CIS, and most client drivers
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will only use the CIS to fill in implementation-defined details.
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*/
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tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
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CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
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while (1) {
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cistpl_cftable_entry_t dflt = { 0 };
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cistpl_cftable_entry_t *cfg = &(parse.cftable_entry);
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if (pcmcia_get_tuple_data(handle, &tuple) != 0 ||
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pcmcia_parse_tuple(handle, &tuple, &parse) != 0)
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goto next_entry;
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if (cfg->flags & CISTPL_CFTABLE_DEFAULT) dflt = *cfg;
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if (cfg->index == 0) goto next_entry;
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link->conf.ConfigIndex = cfg->index;
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/* Does this card need audio output? */
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if (cfg->flags & CISTPL_CFTABLE_AUDIO) {
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link->conf.Attributes |= CONF_ENABLE_SPKR;
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link->conf.Status = CCSR_AUDIO_ENA;
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}
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/* Use power settings for Vcc and Vpp if present */
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/* Note that the CIS values need to be rescaled */
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if (cfg->vcc.present & (1<<CISTPL_POWER_VNOM)) {
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if (conf.Vcc != cfg->vcc.param[CISTPL_POWER_VNOM]/10000)
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goto next_entry;
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} else if (dflt.vcc.present & (1<<CISTPL_POWER_VNOM)) {
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if (conf.Vcc != dflt.vcc.param[CISTPL_POWER_VNOM]/10000)
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goto next_entry;
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}
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if (cfg->vpp1.present & (1<<CISTPL_POWER_VNOM))
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link->conf.Vpp1 = link->conf.Vpp2 =
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cfg->vpp1.param[CISTPL_POWER_VNOM]/10000;
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else if (dflt.vpp1.present & (1<<CISTPL_POWER_VNOM))
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link->conf.Vpp1 = link->conf.Vpp2 =
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dflt.vpp1.param[CISTPL_POWER_VNOM]/10000;
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/* Do we need to allocate an interrupt? */
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if (cfg->irq.IRQInfo1 || dflt.irq.IRQInfo1)
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link->conf.Attributes |= CONF_ENABLE_IRQ;
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/* IO window settings */
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link->io.NumPorts1 = link->io.NumPorts2 = 0;
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if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) {
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cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io;
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link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
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if (!(io->flags & CISTPL_IO_8BIT))
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link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
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if (!(io->flags & CISTPL_IO_16BIT))
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link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
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/* new in dummy.cs 2001/01/28 MN
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link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
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*/
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link->io.BasePort1 = io->win[0].base;
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link->io.NumPorts1 = io->win[0].len;
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if (io->nwin > 1) {
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link->io.Attributes2 = link->io.Attributes1;
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link->io.BasePort2 = io->win[1].base;
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link->io.NumPorts2 = io->win[1].len;
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}
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/* This reserves IO space but doesn't actually enable it */
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if (pcmcia_request_io(link->handle, &link->io) != 0)
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goto next_entry;
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}
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/*
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Now set up a common memory window, if needed. There is room
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in the dev_link_t structure for one memory window handle,
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but if the base addresses need to be saved, or if multiple
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windows are needed, the info should go in the private data
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structure for this device.
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Note that the memory window base is a physical address, and
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needs to be mapped to virtual space with ioremap() before it
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is used.
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*/
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if ((cfg->mem.nwin > 0) || (dflt.mem.nwin > 0)) {
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cistpl_mem_t *mem =
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(cfg->mem.nwin) ? &cfg->mem : &dflt.mem;
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req.Attributes = WIN_DATA_WIDTH_16|WIN_MEMORY_TYPE_CM;
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req.Attributes |= WIN_ENABLE;
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req.Base = mem->win[0].host_addr;
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req.Size = mem->win[0].len;
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/* new in dummy.cs 2001/01/28 MN
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if (req.Size < 0x1000)
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req.Size = 0x1000;
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*/
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req.AccessSpeed = 0;
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if (pcmcia_request_window(&link->handle, &req, &link->win) != 0)
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goto next_entry;
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map.Page = 0; map.CardOffset = mem->win[0].card_addr;
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if (pcmcia_map_mem_page(link->win, &map) != 0)
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goto next_entry;
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}
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/* If we got this far, we're cool! */
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break;
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next_entry:
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/* new in dummy.cs 2001/01/28 MN
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if (link->io.NumPorts1)
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pcmcia_release_io(link->handle, &link->io);
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*/
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CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(handle, &tuple));
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}
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/*
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Allocate an interrupt line. Note that this does not assign a
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handler to the interrupt, unless the 'Handler' member of the
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irq structure is initialized.
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*/
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if (link->conf.Attributes & CONF_ENABLE_IRQ)
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CS_CHECK(RequestIRQ, pcmcia_request_irq(link->handle, &link->irq));
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/*
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This actually configures the PCMCIA socket -- setting up
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the I/O windows and the interrupt mapping, and putting the
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card and host interface into "Memory and IO" mode.
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*/
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CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link->handle, &link->conf));
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/*
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At this point, the dev_node_t structure(s) need to be
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initialized and arranged in a linked list at link->dev.
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*/
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sprintf(dev->node.dev_name, "sedlbauer");
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dev->node.major = dev->node.minor = 0;
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link->dev = &dev->node;
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/* Finally, report what we've done */
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printk(KERN_INFO "%s: index 0x%02x: Vcc %d.%d",
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dev->node.dev_name, link->conf.ConfigIndex,
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link->conf.Vcc/10, link->conf.Vcc%10);
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if (link->conf.Vpp1)
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printk(", Vpp %d.%d", link->conf.Vpp1/10, link->conf.Vpp1%10);
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if (link->conf.Attributes & CONF_ENABLE_IRQ)
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printk(", irq %d", link->irq.AssignedIRQ);
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if (link->io.NumPorts1)
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printk(", io 0x%04x-0x%04x", link->io.BasePort1,
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link->io.BasePort1+link->io.NumPorts1-1);
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if (link->io.NumPorts2)
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printk(" & 0x%04x-0x%04x", link->io.BasePort2,
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link->io.BasePort2+link->io.NumPorts2-1);
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if (link->win)
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printk(", mem 0x%06lx-0x%06lx", req.Base,
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req.Base+req.Size-1);
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printk("\n");
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link->state &= ~DEV_CONFIG_PENDING;
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icard.para[0] = link->irq.AssignedIRQ;
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icard.para[1] = link->io.BasePort1;
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icard.protocol = protocol;
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icard.typ = ISDN_CTYPE_SEDLBAUER_PCMCIA;
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last_ret = hisax_init_pcmcia(link, &(((local_info_t*)link->priv)->stop), &icard);
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if (last_ret < 0) {
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printk(KERN_ERR "sedlbauer_cs: failed to initialize SEDLBAUER PCMCIA %d at i/o %#x\n",
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last_ret, link->io.BasePort1);
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sedlbauer_release(link);
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} else
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((local_info_t*)link->priv)->cardnr = last_ret;
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return;
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cs_failed:
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cs_error(link->handle, last_fn, last_ret);
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sedlbauer_release(link);
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} /* sedlbauer_config */
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/*======================================================================
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After a card is removed, sedlbauer_release() will unregister the
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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 sedlbauer_release(dev_link_t *link)
|
|
{
|
|
local_info_t *local = link->priv;
|
|
DEBUG(0, "sedlbauer_release(0x%p)\n", link);
|
|
|
|
if (local) {
|
|
if (local->cardnr >= 0) {
|
|
/* no unregister function with hisax */
|
|
HiSax_closecard(local->cardnr);
|
|
}
|
|
}
|
|
/* Unlink the device chain */
|
|
link->dev = NULL;
|
|
|
|
/*
|
|
In a normal driver, additional code may be needed to release
|
|
other kernel data structures associated with this device.
|
|
*/
|
|
|
|
/* Don't bother checking to see if these succeed or not */
|
|
if (link->win)
|
|
pcmcia_release_window(link->win);
|
|
pcmcia_release_configuration(link->handle);
|
|
if (link->io.NumPorts1)
|
|
pcmcia_release_io(link->handle, &link->io);
|
|
if (link->irq.AssignedIRQ)
|
|
pcmcia_release_irq(link->handle, &link->irq);
|
|
link->state &= ~DEV_CONFIG;
|
|
} /* sedlbauer_release */
|
|
|
|
static int sedlbauer_suspend(struct pcmcia_device *p_dev)
|
|
{
|
|
dev_link_t *link = dev_to_instance(p_dev);
|
|
local_info_t *dev = link->priv;
|
|
|
|
link->state |= DEV_SUSPEND;
|
|
dev->stop = 1;
|
|
if (link->state & DEV_CONFIG)
|
|
pcmcia_release_configuration(link->handle);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sedlbauer_resume(struct pcmcia_device *p_dev)
|
|
{
|
|
dev_link_t *link = dev_to_instance(p_dev);
|
|
local_info_t *dev = link->priv;
|
|
|
|
link->state &= ~DEV_SUSPEND;
|
|
if (link->state & DEV_CONFIG)
|
|
pcmcia_request_configuration(link->handle, &link->conf);
|
|
dev->stop = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static struct pcmcia_device_id sedlbauer_ids[] = {
|
|
PCMCIA_DEVICE_PROD_ID123("SEDLBAUER", "speed star II", "V 3.1", 0x81fb79f5, 0xf3612e1d, 0x6b95c78a),
|
|
PCMCIA_DEVICE_PROD_ID123("SEDLBAUER", "ISDN-Adapter", "4D67", 0x81fb79f5, 0xe4e9bc12, 0x397b7e90),
|
|
PCMCIA_DEVICE_PROD_ID123("SEDLBAUER", "ISDN-Adapter", "4D98", 0x81fb79f5, 0xe4e9bc12, 0x2e5c7fce),
|
|
PCMCIA_DEVICE_PROD_ID123("SEDLBAUER", "ISDN-Adapter", " (C) 93-94 VK", 0x81fb79f5, 0xe4e9bc12, 0x8db143fe),
|
|
PCMCIA_DEVICE_PROD_ID123("SEDLBAUER", "ISDN-Adapter", " (c) 93-95 VK", 0x81fb79f5, 0xe4e9bc12, 0xb391ab4c),
|
|
PCMCIA_DEVICE_PROD_ID12("HST High Soft Tech GmbH", "Saphir II B", 0xd79e0b84, 0x21d083ae),
|
|
/* PCMCIA_DEVICE_PROD_ID1234("SEDLBAUER", 0x81fb79f5), */ /* too generic*/
|
|
PCMCIA_DEVICE_NULL
|
|
};
|
|
MODULE_DEVICE_TABLE(pcmcia, sedlbauer_ids);
|
|
|
|
static struct pcmcia_driver sedlbauer_driver = {
|
|
.owner = THIS_MODULE,
|
|
.drv = {
|
|
.name = "sedlbauer_cs",
|
|
},
|
|
.probe = sedlbauer_attach,
|
|
.remove = sedlbauer_detach,
|
|
.id_table = sedlbauer_ids,
|
|
.suspend = sedlbauer_suspend,
|
|
.resume = sedlbauer_resume,
|
|
};
|
|
|
|
static int __init init_sedlbauer_cs(void)
|
|
{
|
|
return pcmcia_register_driver(&sedlbauer_driver);
|
|
}
|
|
|
|
static void __exit exit_sedlbauer_cs(void)
|
|
{
|
|
pcmcia_unregister_driver(&sedlbauer_driver);
|
|
}
|
|
|
|
module_init(init_sedlbauer_cs);
|
|
module_exit(exit_sedlbauer_cs);
|