Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* $Id: avm_cs.c,v 1.4.6.3 2001/09/23 22:24:33 kai Exp $ |
| 2 | * |
| 3 | * A PCMCIA client driver for AVM B1/M1/M2 |
| 4 | * |
| 5 | * Copyright 1999 by Carsten Paeth <calle@calle.de> |
| 6 | * |
| 7 | * This software may be used and distributed according to the terms |
| 8 | * of the GNU General Public License, incorporated herein by reference. |
| 9 | * |
| 10 | */ |
| 11 | |
| 12 | #include <linux/module.h> |
| 13 | #include <linux/kernel.h> |
| 14 | #include <linux/init.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 15 | #include <linux/ptrace.h> |
| 16 | #include <linux/slab.h> |
| 17 | #include <linux/string.h> |
| 18 | #include <linux/tty.h> |
| 19 | #include <linux/serial.h> |
| 20 | #include <linux/major.h> |
| 21 | #include <asm/io.h> |
| 22 | #include <asm/system.h> |
| 23 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | #include <pcmcia/cs_types.h> |
| 25 | #include <pcmcia/cs.h> |
| 26 | #include <pcmcia/cistpl.h> |
| 27 | #include <pcmcia/ciscode.h> |
| 28 | #include <pcmcia/ds.h> |
| 29 | #include <pcmcia/cisreg.h> |
| 30 | |
| 31 | #include <linux/skbuff.h> |
| 32 | #include <linux/capi.h> |
| 33 | #include <linux/b1lli.h> |
| 34 | #include <linux/b1pcmcia.h> |
| 35 | |
| 36 | /*====================================================================*/ |
| 37 | |
| 38 | MODULE_DESCRIPTION("CAPI4Linux: PCMCIA client driver for AVM B1/M1/M2"); |
| 39 | MODULE_AUTHOR("Carsten Paeth"); |
| 40 | MODULE_LICENSE("GPL"); |
| 41 | |
| 42 | /*====================================================================*/ |
| 43 | |
| 44 | /* |
| 45 | The event() function is this driver's Card Services event handler. |
| 46 | It will be called by Card Services when an appropriate card status |
| 47 | event is received. The config() and release() entry points are |
| 48 | used to configure or release a socket, in response to card insertion |
| 49 | and ejection events. They are invoked from the skeleton event |
| 50 | handler. |
| 51 | */ |
| 52 | |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 53 | static int avmcs_config(struct pcmcia_device *link); |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 54 | static void avmcs_release(struct pcmcia_device *link); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | |
| 56 | /* |
| 57 | The attach() and detach() entry points are used to create and destroy |
| 58 | "instances" of the driver, where each instance represents everything |
| 59 | needed to manage one actual PCMCIA card. |
| 60 | */ |
| 61 | |
Dominik Brodowski | cc3b486 | 2005-11-14 21:23:14 +0100 | [diff] [blame] | 62 | static void avmcs_detach(struct pcmcia_device *p_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | |
| 64 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | A linked list of "instances" of the skeleton device. Each actual |
| 66 | PCMCIA card corresponds to one device instance, and is described |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 67 | by one struct pcmcia_device structure (defined in ds.h). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | |
| 69 | You may not want to use a linked list for this -- for example, the |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 70 | memory card driver uses an array of struct pcmcia_device pointers, where minor |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | device numbers are used to derive the corresponding array index. |
| 72 | */ |
| 73 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | A driver needs to provide a dev_node_t structure for each device |
| 76 | on a card. In some cases, there is only one device per card (for |
| 77 | example, ethernet cards, modems). In other cases, there may be |
| 78 | many actual or logical devices (SCSI adapters, memory cards with |
| 79 | multiple partitions). The dev_node_t structures need to be kept |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 80 | in a linked list starting at the 'dev' field of a struct pcmcia_device |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | structure. We allocate them in the card's private data structure, |
| 82 | because they generally can't be allocated dynamically. |
| 83 | */ |
| 84 | |
| 85 | typedef struct local_info_t { |
| 86 | dev_node_t node; |
| 87 | } local_info_t; |
| 88 | |
| 89 | /*====================================================================== |
| 90 | |
| 91 | avmcs_attach() creates an "instance" of the driver, allocating |
| 92 | local data structures for one device. The device is registered |
| 93 | with Card Services. |
| 94 | |
| 95 | The dev_link structure is initialized, but we don't actually |
| 96 | configure the card at this point -- we wait until we receive a |
| 97 | card insertion event. |
| 98 | |
| 99 | ======================================================================*/ |
| 100 | |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 101 | static int avmcs_probe(struct pcmcia_device *p_dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | local_info_t *local; |
Dominik Brodowski | f8cfa61 | 2005-11-14 21:25:51 +0100 | [diff] [blame] | 104 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | /* The io structure describes IO port mapping */ |
Dominik Brodowski | fd23823 | 2006-03-05 10:45:09 +0100 | [diff] [blame] | 106 | p_dev->io.NumPorts1 = 16; |
| 107 | p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_8; |
| 108 | p_dev->io.NumPorts2 = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | |
| 110 | /* Interrupt setup */ |
Dominik Brodowski | e15c1c1 | 2009-11-28 18:12:06 +0100 | [diff] [blame] | 111 | p_dev->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | /* General socket configuration */ |
Dominik Brodowski | fd23823 | 2006-03-05 10:45:09 +0100 | [diff] [blame] | 114 | p_dev->conf.Attributes = CONF_ENABLE_IRQ; |
| 115 | p_dev->conf.IntType = INT_MEMORY_AND_IO; |
| 116 | p_dev->conf.ConfigIndex = 1; |
| 117 | p_dev->conf.Present = PRESENT_OPTION; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | |
| 119 | /* Allocate space for private device-specific data */ |
Burman Yan | 41f9693 | 2006-12-08 02:39:35 -0800 | [diff] [blame] | 120 | local = kzalloc(sizeof(local_info_t), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | if (!local) |
Dominik Brodowski | fd23823 | 2006-03-05 10:45:09 +0100 | [diff] [blame] | 122 | goto err; |
Dominik Brodowski | fd23823 | 2006-03-05 10:45:09 +0100 | [diff] [blame] | 123 | p_dev->priv = local; |
Dominik Brodowski | f8cfa61 | 2005-11-14 21:25:51 +0100 | [diff] [blame] | 124 | |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 125 | return avmcs_config(p_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | err: |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 128 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | } /* avmcs_attach */ |
| 130 | |
| 131 | /*====================================================================== |
| 132 | |
| 133 | This deletes a driver "instance". The device is de-registered |
| 134 | with Card Services. If it has been released, all local data |
| 135 | structures are freed. Otherwise, the structures will be freed |
| 136 | when the device is released. |
| 137 | |
| 138 | ======================================================================*/ |
| 139 | |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 140 | static void avmcs_detach(struct pcmcia_device *link) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | { |
Dominik Brodowski | cc3b486 | 2005-11-14 21:23:14 +0100 | [diff] [blame] | 142 | avmcs_release(link); |
Dominik Brodowski | e2d4096 | 2006-03-02 00:09:29 +0100 | [diff] [blame] | 143 | kfree(link->priv); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | } /* avmcs_detach */ |
| 145 | |
| 146 | /*====================================================================== |
| 147 | |
| 148 | avmcs_config() is scheduled to run after a CARD_INSERTION event |
| 149 | is received, to configure the PCMCIA socket, and to make the |
| 150 | ethernet device available to the system. |
| 151 | |
| 152 | ======================================================================*/ |
| 153 | |
Dominik Brodowski | 5fcd4da | 2008-07-29 08:38:55 +0200 | [diff] [blame] | 154 | static int avmcs_configcheck(struct pcmcia_device *p_dev, |
| 155 | cistpl_cftable_entry_t *cf, |
Dominik Brodowski | 8e2fc39 | 2008-08-02 15:30:31 +0200 | [diff] [blame] | 156 | cistpl_cftable_entry_t *dflt, |
Dominik Brodowski | ad913c1 | 2008-08-02 16:12:00 +0200 | [diff] [blame] | 157 | unsigned int vcc, |
Dominik Brodowski | 5fcd4da | 2008-07-29 08:38:55 +0200 | [diff] [blame] | 158 | void *priv_data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | { |
Dominik Brodowski | 5fcd4da | 2008-07-29 08:38:55 +0200 | [diff] [blame] | 160 | if (cf->io.nwin <= 0) |
| 161 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | |
Dominik Brodowski | 5fcd4da | 2008-07-29 08:38:55 +0200 | [diff] [blame] | 163 | p_dev->io.BasePort1 = cf->io.win[0].base; |
| 164 | p_dev->io.NumPorts1 = cf->io.win[0].len; |
| 165 | p_dev->io.NumPorts2 = 0; |
| 166 | printk(KERN_INFO "avm_cs: testing i/o %#x-%#x\n", |
| 167 | p_dev->io.BasePort1, |
| 168 | p_dev->io.BasePort1+p_dev->io.NumPorts1-1); |
| 169 | return pcmcia_request_io(p_dev, &p_dev->io); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 170 | } |
| 171 | |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 172 | static int avmcs_config(struct pcmcia_device *link) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | local_info_t *dev; |
| 175 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | char devname[128]; |
| 177 | int cardtype; |
| 178 | int (*addcard)(unsigned int port, unsigned irq); |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 179 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | dev = link->priv; |
| 181 | |
Dominik Brodowski | 5fcd4da | 2008-07-29 08:38:55 +0200 | [diff] [blame] | 182 | devname[0] = 0; |
| 183 | if (link->prod_id[1]) |
| 184 | strlcpy(devname, link->prod_id[1], sizeof(devname)); |
| 185 | |
| 186 | /* |
| 187 | * find IO port |
| 188 | */ |
| 189 | if (pcmcia_loop_config(link, avmcs_configcheck, NULL)) |
| 190 | return -ENODEV; |
| 191 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | do { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | /* |
| 194 | * allocate an interrupt line |
| 195 | */ |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 196 | i = pcmcia_request_irq(link, &link->irq); |
Dominik Brodowski | 4c89e88 | 2008-08-03 10:07:45 +0200 | [diff] [blame] | 197 | if (i != 0) { |
Dominik Brodowski | 50db3fd | 2006-01-15 10:05:19 +0100 | [diff] [blame] | 198 | /* undo */ |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 199 | pcmcia_disable_device(link); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | break; |
| 201 | } |
Dominik Brodowski | 50db3fd | 2006-01-15 10:05:19 +0100 | [diff] [blame] | 202 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 203 | /* |
| 204 | * configure the PCMCIA socket |
| 205 | */ |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 206 | i = pcmcia_request_configuration(link, &link->conf); |
Dominik Brodowski | 4c89e88 | 2008-08-03 10:07:45 +0200 | [diff] [blame] | 207 | if (i != 0) { |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 208 | pcmcia_disable_device(link); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | break; |
| 210 | } |
| 211 | |
| 212 | } while (0); |
| 213 | |
| 214 | /* At this point, the dev_node_t structure(s) should be |
| 215 | initialized and arranged in a linked list at link->dev. */ |
| 216 | |
| 217 | if (devname[0]) { |
| 218 | char *s = strrchr(devname, ' '); |
| 219 | if (!s) |
| 220 | s = devname; |
| 221 | else s++; |
| 222 | strcpy(dev->node.dev_name, s); |
| 223 | if (strcmp("M1", s) == 0) { |
| 224 | cardtype = AVM_CARDTYPE_M1; |
| 225 | } else if (strcmp("M2", s) == 0) { |
| 226 | cardtype = AVM_CARDTYPE_M2; |
| 227 | } else { |
| 228 | cardtype = AVM_CARDTYPE_B1; |
| 229 | } |
| 230 | } else { |
| 231 | strcpy(dev->node.dev_name, "b1"); |
| 232 | cardtype = AVM_CARDTYPE_B1; |
| 233 | } |
| 234 | |
| 235 | dev->node.major = 64; |
| 236 | dev->node.minor = 0; |
Dominik Brodowski | fd23823 | 2006-03-05 10:45:09 +0100 | [diff] [blame] | 237 | link->dev_node = &dev->node; |
Dominik Brodowski | e2d4096 | 2006-03-02 00:09:29 +0100 | [diff] [blame] | 238 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | /* If any step failed, release any partially configured state */ |
| 240 | if (i != 0) { |
| 241 | avmcs_release(link); |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 242 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | } |
| 244 | |
| 245 | |
| 246 | switch (cardtype) { |
| 247 | case AVM_CARDTYPE_M1: addcard = b1pcmcia_addcard_m1; break; |
| 248 | case AVM_CARDTYPE_M2: addcard = b1pcmcia_addcard_m2; break; |
| 249 | default: |
| 250 | case AVM_CARDTYPE_B1: addcard = b1pcmcia_addcard_b1; break; |
| 251 | } |
| 252 | if ((i = (*addcard)(link->io.BasePort1, link->irq.AssignedIRQ)) < 0) { |
| 253 | printk(KERN_ERR "avm_cs: failed to add AVM-%s-Controller at i/o %#x, irq %d\n", |
| 254 | dev->node.dev_name, link->io.BasePort1, link->irq.AssignedIRQ); |
| 255 | avmcs_release(link); |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 256 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | } |
| 258 | dev->node.minor = i; |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 259 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | |
| 261 | } /* avmcs_config */ |
| 262 | |
| 263 | /*====================================================================== |
| 264 | |
| 265 | After a card is removed, avmcs_release() will unregister the net |
| 266 | device, and release the PCMCIA configuration. If the device is |
| 267 | still open, this will be postponed until it is closed. |
| 268 | |
| 269 | ======================================================================*/ |
| 270 | |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 271 | static void avmcs_release(struct pcmcia_device *link) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | { |
Dominik Brodowski | 5f2a71f | 2006-01-15 09:32:39 +0100 | [diff] [blame] | 273 | b1pcmcia_delcard(link->io.BasePort1, link->irq.AssignedIRQ); |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 274 | pcmcia_disable_device(link); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | } /* avmcs_release */ |
| 276 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | |
Dominik Brodowski | a13bcf0 | 2005-06-27 16:28:35 -0700 | [diff] [blame] | 278 | static struct pcmcia_device_id avmcs_ids[] = { |
| 279 | PCMCIA_DEVICE_PROD_ID12("AVM", "ISDN-Controller B1", 0x95d42008, 0x845dc335), |
| 280 | PCMCIA_DEVICE_PROD_ID12("AVM", "Mobile ISDN-Controller M1", 0x95d42008, 0x81e10430), |
| 281 | PCMCIA_DEVICE_PROD_ID12("AVM", "Mobile ISDN-Controller M2", 0x95d42008, 0x18e8558a), |
| 282 | PCMCIA_DEVICE_NULL |
| 283 | }; |
| 284 | MODULE_DEVICE_TABLE(pcmcia, avmcs_ids); |
| 285 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | static struct pcmcia_driver avmcs_driver = { |
| 287 | .owner = THIS_MODULE, |
| 288 | .drv = { |
| 289 | .name = "avm_cs", |
| 290 | }, |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 291 | .probe = avmcs_probe, |
Dominik Brodowski | cc3b486 | 2005-11-14 21:23:14 +0100 | [diff] [blame] | 292 | .remove = avmcs_detach, |
Dominik Brodowski | a13bcf0 | 2005-06-27 16:28:35 -0700 | [diff] [blame] | 293 | .id_table = avmcs_ids, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 294 | }; |
| 295 | |
| 296 | static int __init avmcs_init(void) |
| 297 | { |
| 298 | return pcmcia_register_driver(&avmcs_driver); |
| 299 | } |
| 300 | |
| 301 | static void __exit avmcs_exit(void) |
| 302 | { |
| 303 | pcmcia_unregister_driver(&avmcs_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | } |
| 305 | |
| 306 | module_init(avmcs_init); |
| 307 | module_exit(avmcs_exit); |