drivers/net/wireless/b43/pcmcia.c

   1 /*
   2
   3   Broadcom B43 wireless driver
   4
   5   Copyright (c) 2007 Michael Buesch <mb@bu3sch.de>
   6
   7   This program is free software; you can redistribute it and/or modify
   8   it under the terms of the GNU General Public License as published by
   9   the Free Software Foundation; either version 2 of the License, or
  10   (at your option) any later version.
  11
  12   This program is distributed in the hope that it will be useful,
  13   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15   GNU General Public License for more details.
  16
  17   You should have received a copy of the GNU General Public License
  18   along with this program; see the file COPYING.  If not, write to
  19   the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
  20   Boston, MA 02110-1301, USA.
  21
  22 */
  23
  24 #include "pcmcia.h"
  25
  26 #include <linux/ssb/ssb.h>
  27
  28 #include <pcmcia/cs_types.h>
  29 #include <pcmcia/cs.h>
  30 #include <pcmcia/cistpl.h>
  31 #include <pcmcia/ciscode.h>
  32 #include <pcmcia/ds.h>
  33 #include <pcmcia/cisreg.h>
  34
  35
  36 static /*const */ struct pcmcia_device_id b43_pcmcia_tbl[] = {
  37         PCMCIA_DEVICE_MANF_CARD(0x2D0, 0x448),
  38         PCMCIA_DEVICE_MANF_CARD(0x2D0, 0x476),
  39         PCMCIA_DEVICE_NULL,
  40 };
  41
  42 MODULE_DEVICE_TABLE(pcmcia, b43_pcmcia_tbl);
  43
  44 #ifdef CONFIG_PM
  45 static int b43_pcmcia_suspend(struct pcmcia_device *dev)
  46 {
  47         struct ssb_bus *ssb = dev->priv;
  48
  49         return ssb_bus_suspend(ssb);
  50 }
  51
  52 static int b43_pcmcia_resume(struct pcmcia_device *dev)
  53 {
  54         struct ssb_bus *ssb = dev->priv;
  55
  56         return ssb_bus_resume(ssb);
  57 }
  58 #else /* CONFIG_PM */
  59 # define b43_pcmcia_suspend             NULL
  60 # define b43_pcmcia_resume              NULL
  61 #endif /* CONFIG_PM */
  62
  63 static int __devinit b43_pcmcia_probe(struct pcmcia_device *dev)
  64 {
  65         struct ssb_bus *ssb;
  66         win_req_t win;
  67         memreq_t mem;
  68         tuple_t tuple;
  69         cisparse_t parse;
  70         int err = -ENOMEM;
  71         int res = 0;
  72         unsigned char buf[64];
  73
  74         ssb = kzalloc(sizeof(*ssb), GFP_KERNEL);
  75         if (!ssb)
  76                 goto out_error;
  77
  78         err = -ENODEV;
  79         tuple.DesiredTuple = CISTPL_CONFIG;
  80         tuple.Attributes = 0;
  81         tuple.TupleData = buf;
  82         tuple.TupleDataMax = sizeof(buf);
  83         tuple.TupleOffset = 0;
  84
  85         res = pcmcia_get_first_tuple(dev, &tuple);
  86         if (res != 0)
  87                 goto err_kfree_ssb;
  88         res = pcmcia_get_tuple_data(dev, &tuple);
  89         if (res != 0)
  90                 goto err_kfree_ssb;
  91         res = pcmcia_parse_tuple(&tuple, &parse);
  92         if (res != 0)
  93                 goto err_kfree_ssb;
  94
  95         dev->conf.ConfigBase = parse.config.base;
  96         dev->conf.Present = parse.config.rmask[0];
  97         dev->conf.Attributes = CONF_ENABLE_IRQ;
  98         dev->conf.IntType = INT_MEMORY_AND_IO;
  99
 100         dev->io.BasePort2 = 0;
 101         dev->io.NumPorts2 = 0;
 102         dev->io.Attributes2 = 0;
 103
 104         win.Attributes = WIN_ADDR_SPACE_MEM | WIN_MEMORY_TYPE_CM |
 105                          WIN_ENABLE | WIN_DATA_WIDTH_16 |
 106                          WIN_USE_WAIT;
 107         win.Base = 0;
 108         win.Size = SSB_CORE_SIZE;
 109         win.AccessSpeed = 250;
 110         res = pcmcia_request_window(&dev, &win, &dev->win);
 111         if (res != 0)
 112                 goto err_kfree_ssb;
 113
 114         mem.CardOffset = 0;
 115         mem.Page = 0;
 116         res = pcmcia_map_mem_page(dev->win, &mem);
 117         if (res != 0)
 118                 goto err_disable;
 119
 120         dev->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING;
 121         dev->irq.IRQInfo1 = IRQ_LEVEL_ID;
 122         dev->irq.Handler = NULL; /* The handler is registered later. */
 123         dev->irq.Instance = NULL;
 124         res = pcmcia_request_irq(dev, &dev->irq);
 125         if (res != 0)
 126                 goto err_disable;
 127
 128         res = pcmcia_request_configuration(dev, &dev->conf);
 129         if (res != 0)
 130                 goto err_disable;
 131
 132         err = ssb_bus_pcmciabus_register(ssb, dev, win.Base);
 133         if (err)
 134                 goto err_disable;
 135         dev->priv = ssb;
 136
 137         return 0;
 138
 139 err_disable:
 140         pcmcia_disable_device(dev);
 141 err_kfree_ssb:
 142         kfree(ssb);
 143 out_error:
 144         printk(KERN_ERR "b43-pcmcia: Initialization failed (%d, %d)\n",
 145                res, err);
 146         return err;
 147 }
 148
 149 static void __devexit b43_pcmcia_remove(struct pcmcia_device *dev)
 150 {
 151         struct ssb_bus *ssb = dev->priv;
 152
 153         ssb_bus_unregister(ssb);
 154         pcmcia_disable_device(dev);
 155         kfree(ssb);
 156         dev->priv = NULL;
 157 }
 158
 159 static struct pcmcia_driver b43_pcmcia_driver = {
 160         .owner          = THIS_MODULE,
 161         .drv            = {
 162                                 .name = "b43-pcmcia",
 163                         },
 164         .id_table       = b43_pcmcia_tbl,
 165         .probe          = b43_pcmcia_probe,
 166         .remove         = __devexit_p(b43_pcmcia_remove),
 167         .suspend        = b43_pcmcia_suspend,
 168         .resume         = b43_pcmcia_resume,
 169 };
 170
 171 int b43_pcmcia_init(void)
 172 {
 173         return pcmcia_register_driver(&b43_pcmcia_driver);
 174 }
 175
 176 void b43_pcmcia_exit(void)
 177 {
 178         pcmcia_unregister_driver(&b43_pcmcia_driver);
 179 }