Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * |
| 3 | * Driver for the 3Com Bluetooth PCMCIA card |
| 4 | * |
| 5 | * Copyright (C) 2001-2002 Marcel Holtmann <marcel@holtmann.org> |
| 6 | * Jose Orlando Pereira <jop@di.uminho.pt> |
| 7 | * |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License version 2 as |
| 11 | * published by the Free Software Foundation; |
| 12 | * |
| 13 | * Software distributed under the License is distributed on an "AS |
| 14 | * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or |
| 15 | * implied. See the License for the specific language governing |
| 16 | * rights and limitations under the License. |
| 17 | * |
| 18 | * The initial developer of the original code is David A. Hinds |
| 19 | * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds |
| 20 | * are Copyright (C) 1999 David A. Hinds. All Rights Reserved. |
| 21 | * |
| 22 | */ |
| 23 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | #include <linux/module.h> |
| 25 | |
| 26 | #include <linux/kernel.h> |
| 27 | #include <linux/init.h> |
| 28 | #include <linux/slab.h> |
| 29 | #include <linux/types.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | #include <linux/delay.h> |
| 31 | #include <linux/errno.h> |
| 32 | #include <linux/ptrace.h> |
| 33 | #include <linux/ioport.h> |
| 34 | #include <linux/spinlock.h> |
| 35 | #include <linux/moduleparam.h> |
| 36 | |
| 37 | #include <linux/skbuff.h> |
| 38 | #include <linux/string.h> |
| 39 | #include <linux/serial.h> |
| 40 | #include <linux/serial_reg.h> |
| 41 | #include <linux/bitops.h> |
| 42 | #include <asm/system.h> |
| 43 | #include <asm/io.h> |
| 44 | |
| 45 | #include <linux/device.h> |
| 46 | #include <linux/firmware.h> |
| 47 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | #include <pcmcia/cistpl.h> |
| 49 | #include <pcmcia/ciscode.h> |
| 50 | #include <pcmcia/ds.h> |
| 51 | #include <pcmcia/cisreg.h> |
| 52 | |
| 53 | #include <net/bluetooth/bluetooth.h> |
| 54 | #include <net/bluetooth/hci_core.h> |
| 55 | |
| 56 | |
| 57 | |
| 58 | /* ======================== Module parameters ======================== */ |
| 59 | |
| 60 | |
Marcel Holtmann | 63fbd24 | 2008-08-18 13:23:53 +0200 | [diff] [blame] | 61 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | MODULE_DESCRIPTION("Bluetooth driver for the 3Com Bluetooth PCMCIA card"); |
| 63 | MODULE_LICENSE("GPL"); |
Marcel Holtmann | 2312119 | 2007-02-17 23:59:02 +0100 | [diff] [blame] | 64 | MODULE_FIRMWARE("BT3CPCC.bin"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | |
| 66 | |
| 67 | |
| 68 | /* ======================== Local structures ======================== */ |
| 69 | |
| 70 | |
| 71 | typedef struct bt3c_info_t { |
Dominik Brodowski | fd23823 | 2006-03-05 10:45:09 +0100 | [diff] [blame] | 72 | struct pcmcia_device *p_dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | |
| 74 | struct hci_dev *hdev; |
| 75 | |
| 76 | spinlock_t lock; /* For serializing operations */ |
| 77 | |
| 78 | struct sk_buff_head txq; |
| 79 | unsigned long tx_state; |
| 80 | |
| 81 | unsigned long rx_state; |
| 82 | unsigned long rx_count; |
| 83 | struct sk_buff *rx_skb; |
| 84 | } bt3c_info_t; |
| 85 | |
| 86 | |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 87 | static int bt3c_config(struct pcmcia_device *link); |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 88 | static void bt3c_release(struct pcmcia_device *link); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | |
Dominik Brodowski | cc3b486 | 2005-11-14 21:23:14 +0100 | [diff] [blame] | 90 | static void bt3c_detach(struct pcmcia_device *p_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | |
| 93 | /* Transmit states */ |
| 94 | #define XMIT_SENDING 1 |
| 95 | #define XMIT_WAKEUP 2 |
| 96 | #define XMIT_WAITING 8 |
| 97 | |
| 98 | /* Receiver states */ |
| 99 | #define RECV_WAIT_PACKET_TYPE 0 |
| 100 | #define RECV_WAIT_EVENT_HEADER 1 |
| 101 | #define RECV_WAIT_ACL_HEADER 2 |
| 102 | #define RECV_WAIT_SCO_HEADER 3 |
| 103 | #define RECV_WAIT_DATA 4 |
| 104 | |
| 105 | |
| 106 | |
| 107 | /* ======================== Special I/O functions ======================== */ |
| 108 | |
| 109 | |
| 110 | #define DATA_L 0 |
| 111 | #define DATA_H 1 |
| 112 | #define ADDR_L 2 |
| 113 | #define ADDR_H 3 |
| 114 | #define CONTROL 4 |
| 115 | |
| 116 | |
| 117 | static inline void bt3c_address(unsigned int iobase, unsigned short addr) |
| 118 | { |
| 119 | outb(addr & 0xff, iobase + ADDR_L); |
| 120 | outb((addr >> 8) & 0xff, iobase + ADDR_H); |
| 121 | } |
| 122 | |
| 123 | |
| 124 | static inline void bt3c_put(unsigned int iobase, unsigned short value) |
| 125 | { |
| 126 | outb(value & 0xff, iobase + DATA_L); |
| 127 | outb((value >> 8) & 0xff, iobase + DATA_H); |
| 128 | } |
| 129 | |
| 130 | |
| 131 | static inline void bt3c_io_write(unsigned int iobase, unsigned short addr, unsigned short value) |
| 132 | { |
| 133 | bt3c_address(iobase, addr); |
| 134 | bt3c_put(iobase, value); |
| 135 | } |
| 136 | |
| 137 | |
| 138 | static inline unsigned short bt3c_get(unsigned int iobase) |
| 139 | { |
| 140 | unsigned short value = inb(iobase + DATA_L); |
| 141 | |
| 142 | value |= inb(iobase + DATA_H) << 8; |
| 143 | |
| 144 | return value; |
| 145 | } |
| 146 | |
| 147 | |
| 148 | static inline unsigned short bt3c_read(unsigned int iobase, unsigned short addr) |
| 149 | { |
| 150 | bt3c_address(iobase, addr); |
| 151 | |
| 152 | return bt3c_get(iobase); |
| 153 | } |
| 154 | |
| 155 | |
| 156 | |
| 157 | /* ======================== Interrupt handling ======================== */ |
| 158 | |
| 159 | |
| 160 | static int bt3c_write(unsigned int iobase, int fifo_size, __u8 *buf, int len) |
| 161 | { |
| 162 | int actual = 0; |
| 163 | |
| 164 | bt3c_address(iobase, 0x7080); |
| 165 | |
| 166 | /* Fill FIFO with current frame */ |
| 167 | while (actual < len) { |
| 168 | /* Transmit next byte */ |
| 169 | bt3c_put(iobase, buf[actual]); |
| 170 | actual++; |
| 171 | } |
| 172 | |
| 173 | bt3c_io_write(iobase, 0x7005, actual); |
| 174 | |
| 175 | return actual; |
| 176 | } |
| 177 | |
| 178 | |
| 179 | static void bt3c_write_wakeup(bt3c_info_t *info) |
| 180 | { |
| 181 | if (!info) { |
| 182 | BT_ERR("Unknown device"); |
| 183 | return; |
| 184 | } |
| 185 | |
| 186 | if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) |
| 187 | return; |
| 188 | |
| 189 | do { |
Dominik Brodowski | 9a017a9 | 2010-07-24 15:58:54 +0200 | [diff] [blame] | 190 | register unsigned int iobase = info->p_dev->resource[0]->start; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | register struct sk_buff *skb; |
| 192 | register int len; |
| 193 | |
Dominik Brodowski | e2d4096 | 2006-03-02 00:09:29 +0100 | [diff] [blame] | 194 | if (!pcmcia_dev_present(info->p_dev)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | break; |
| 196 | |
| 197 | |
| 198 | if (!(skb = skb_dequeue(&(info->txq)))) { |
| 199 | clear_bit(XMIT_SENDING, &(info->tx_state)); |
| 200 | break; |
| 201 | } |
| 202 | |
| 203 | /* Send frame */ |
| 204 | len = bt3c_write(iobase, 256, skb->data, skb->len); |
| 205 | |
| 206 | if (len != skb->len) { |
| 207 | BT_ERR("Very strange"); |
| 208 | } |
| 209 | |
| 210 | kfree_skb(skb); |
| 211 | |
| 212 | info->hdev->stat.byte_tx += len; |
| 213 | |
| 214 | } while (0); |
| 215 | } |
| 216 | |
| 217 | |
| 218 | static void bt3c_receive(bt3c_info_t *info) |
| 219 | { |
| 220 | unsigned int iobase; |
| 221 | int size = 0, avail; |
| 222 | |
| 223 | if (!info) { |
| 224 | BT_ERR("Unknown device"); |
| 225 | return; |
| 226 | } |
| 227 | |
Dominik Brodowski | 9a017a9 | 2010-07-24 15:58:54 +0200 | [diff] [blame] | 228 | iobase = info->p_dev->resource[0]->start; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | |
| 230 | avail = bt3c_read(iobase, 0x7006); |
| 231 | //printk("bt3c_cs: receiving %d bytes\n", avail); |
| 232 | |
| 233 | bt3c_address(iobase, 0x7480); |
| 234 | while (size < avail) { |
| 235 | size++; |
| 236 | info->hdev->stat.byte_rx++; |
| 237 | |
| 238 | /* Allocate packet */ |
| 239 | if (info->rx_skb == NULL) { |
| 240 | info->rx_state = RECV_WAIT_PACKET_TYPE; |
| 241 | info->rx_count = 0; |
| 242 | if (!(info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) { |
| 243 | BT_ERR("Can't allocate mem for new packet"); |
| 244 | return; |
| 245 | } |
| 246 | } |
| 247 | |
| 248 | |
| 249 | if (info->rx_state == RECV_WAIT_PACKET_TYPE) { |
| 250 | |
| 251 | info->rx_skb->dev = (void *) info->hdev; |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 252 | bt_cb(info->rx_skb)->pkt_type = inb(iobase + DATA_L); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 253 | inb(iobase + DATA_H); |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 254 | //printk("bt3c: PACKET_TYPE=%02x\n", bt_cb(info->rx_skb)->pkt_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 256 | switch (bt_cb(info->rx_skb)->pkt_type) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | |
| 258 | case HCI_EVENT_PKT: |
| 259 | info->rx_state = RECV_WAIT_EVENT_HEADER; |
| 260 | info->rx_count = HCI_EVENT_HDR_SIZE; |
| 261 | break; |
| 262 | |
| 263 | case HCI_ACLDATA_PKT: |
| 264 | info->rx_state = RECV_WAIT_ACL_HEADER; |
| 265 | info->rx_count = HCI_ACL_HDR_SIZE; |
| 266 | break; |
| 267 | |
| 268 | case HCI_SCODATA_PKT: |
| 269 | info->rx_state = RECV_WAIT_SCO_HEADER; |
| 270 | info->rx_count = HCI_SCO_HDR_SIZE; |
| 271 | break; |
| 272 | |
| 273 | default: |
| 274 | /* Unknown packet */ |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 275 | BT_ERR("Unknown HCI packet with type 0x%02x received", bt_cb(info->rx_skb)->pkt_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 276 | info->hdev->stat.err_rx++; |
| 277 | clear_bit(HCI_RUNNING, &(info->hdev->flags)); |
| 278 | |
| 279 | kfree_skb(info->rx_skb); |
| 280 | info->rx_skb = NULL; |
| 281 | break; |
| 282 | |
| 283 | } |
| 284 | |
| 285 | } else { |
| 286 | |
| 287 | __u8 x = inb(iobase + DATA_L); |
| 288 | |
| 289 | *skb_put(info->rx_skb, 1) = x; |
| 290 | inb(iobase + DATA_H); |
| 291 | info->rx_count--; |
| 292 | |
| 293 | if (info->rx_count == 0) { |
| 294 | |
| 295 | int dlen; |
| 296 | struct hci_event_hdr *eh; |
| 297 | struct hci_acl_hdr *ah; |
| 298 | struct hci_sco_hdr *sh; |
| 299 | |
| 300 | switch (info->rx_state) { |
| 301 | |
| 302 | case RECV_WAIT_EVENT_HEADER: |
Arnaldo Carvalho de Melo | 2a123b8 | 2007-03-27 18:38:07 -0300 | [diff] [blame] | 303 | eh = hci_event_hdr(info->rx_skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | info->rx_state = RECV_WAIT_DATA; |
| 305 | info->rx_count = eh->plen; |
| 306 | break; |
| 307 | |
| 308 | case RECV_WAIT_ACL_HEADER: |
Arnaldo Carvalho de Melo | 2a123b8 | 2007-03-27 18:38:07 -0300 | [diff] [blame] | 309 | ah = hci_acl_hdr(info->rx_skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | dlen = __le16_to_cpu(ah->dlen); |
| 311 | info->rx_state = RECV_WAIT_DATA; |
| 312 | info->rx_count = dlen; |
| 313 | break; |
| 314 | |
| 315 | case RECV_WAIT_SCO_HEADER: |
Arnaldo Carvalho de Melo | 2a123b8 | 2007-03-27 18:38:07 -0300 | [diff] [blame] | 316 | sh = hci_sco_hdr(info->rx_skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | info->rx_state = RECV_WAIT_DATA; |
| 318 | info->rx_count = sh->dlen; |
| 319 | break; |
| 320 | |
| 321 | case RECV_WAIT_DATA: |
| 322 | hci_recv_frame(info->rx_skb); |
| 323 | info->rx_skb = NULL; |
| 324 | break; |
| 325 | |
| 326 | } |
| 327 | |
| 328 | } |
| 329 | |
| 330 | } |
| 331 | |
| 332 | } |
| 333 | |
| 334 | bt3c_io_write(iobase, 0x7006, 0x0000); |
| 335 | } |
| 336 | |
| 337 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 338 | static irqreturn_t bt3c_interrupt(int irq, void *dev_inst) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | { |
| 340 | bt3c_info_t *info = dev_inst; |
| 341 | unsigned int iobase; |
| 342 | int iir; |
Alan Cox | aafcf99 | 2008-10-05 17:35:41 +0100 | [diff] [blame] | 343 | irqreturn_t r = IRQ_NONE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 344 | |
Mike Frysinger | 7427847 | 2009-09-14 13:43:49 -0400 | [diff] [blame] | 345 | if (!info || !info->hdev) |
| 346 | /* our irq handler is shared */ |
| 347 | return IRQ_NONE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | |
Dominik Brodowski | 9a017a9 | 2010-07-24 15:58:54 +0200 | [diff] [blame] | 349 | iobase = info->p_dev->resource[0]->start; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 350 | |
| 351 | spin_lock(&(info->lock)); |
| 352 | |
| 353 | iir = inb(iobase + CONTROL); |
| 354 | if (iir & 0x80) { |
| 355 | int stat = bt3c_read(iobase, 0x7001); |
| 356 | |
| 357 | if ((stat & 0xff) == 0x7f) { |
| 358 | BT_ERR("Very strange (stat=0x%04x)", stat); |
| 359 | } else if ((stat & 0xff) != 0xff) { |
| 360 | if (stat & 0x0020) { |
Andre Haupt | 34a55ed | 2009-02-02 14:45:11 -0800 | [diff] [blame] | 361 | int status = bt3c_read(iobase, 0x7002) & 0x10; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | BT_INFO("%s: Antenna %s", info->hdev->name, |
Andre Haupt | 34a55ed | 2009-02-02 14:45:11 -0800 | [diff] [blame] | 363 | status ? "out" : "in"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | } |
| 365 | if (stat & 0x0001) |
| 366 | bt3c_receive(info); |
| 367 | if (stat & 0x0002) { |
| 368 | //BT_ERR("Ack (stat=0x%04x)", stat); |
| 369 | clear_bit(XMIT_SENDING, &(info->tx_state)); |
| 370 | bt3c_write_wakeup(info); |
| 371 | } |
| 372 | |
| 373 | bt3c_io_write(iobase, 0x7001, 0x0000); |
| 374 | |
| 375 | outb(iir, iobase + CONTROL); |
| 376 | } |
Alan Cox | aafcf99 | 2008-10-05 17:35:41 +0100 | [diff] [blame] | 377 | r = IRQ_HANDLED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 378 | } |
| 379 | |
| 380 | spin_unlock(&(info->lock)); |
| 381 | |
Alan Cox | aafcf99 | 2008-10-05 17:35:41 +0100 | [diff] [blame] | 382 | return r; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 383 | } |
| 384 | |
| 385 | |
| 386 | |
| 387 | /* ======================== HCI interface ======================== */ |
| 388 | |
| 389 | |
| 390 | static int bt3c_hci_flush(struct hci_dev *hdev) |
| 391 | { |
| 392 | bt3c_info_t *info = (bt3c_info_t *)(hdev->driver_data); |
| 393 | |
| 394 | /* Drop TX queue */ |
| 395 | skb_queue_purge(&(info->txq)); |
| 396 | |
| 397 | return 0; |
| 398 | } |
| 399 | |
| 400 | |
| 401 | static int bt3c_hci_open(struct hci_dev *hdev) |
| 402 | { |
| 403 | set_bit(HCI_RUNNING, &(hdev->flags)); |
| 404 | |
| 405 | return 0; |
| 406 | } |
| 407 | |
| 408 | |
| 409 | static int bt3c_hci_close(struct hci_dev *hdev) |
| 410 | { |
| 411 | if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags))) |
| 412 | return 0; |
| 413 | |
| 414 | bt3c_hci_flush(hdev); |
| 415 | |
| 416 | return 0; |
| 417 | } |
| 418 | |
| 419 | |
| 420 | static int bt3c_hci_send_frame(struct sk_buff *skb) |
| 421 | { |
| 422 | bt3c_info_t *info; |
| 423 | struct hci_dev *hdev = (struct hci_dev *)(skb->dev); |
| 424 | unsigned long flags; |
| 425 | |
| 426 | if (!hdev) { |
| 427 | BT_ERR("Frame for unknown HCI device (hdev=NULL)"); |
| 428 | return -ENODEV; |
| 429 | } |
| 430 | |
| 431 | info = (bt3c_info_t *) (hdev->driver_data); |
| 432 | |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 433 | switch (bt_cb(skb)->pkt_type) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | case HCI_COMMAND_PKT: |
| 435 | hdev->stat.cmd_tx++; |
| 436 | break; |
| 437 | case HCI_ACLDATA_PKT: |
| 438 | hdev->stat.acl_tx++; |
| 439 | break; |
| 440 | case HCI_SCODATA_PKT: |
| 441 | hdev->stat.sco_tx++; |
| 442 | break; |
| 443 | }; |
| 444 | |
| 445 | /* Prepend skb with frame type */ |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 446 | memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 447 | skb_queue_tail(&(info->txq), skb); |
| 448 | |
| 449 | spin_lock_irqsave(&(info->lock), flags); |
| 450 | |
| 451 | bt3c_write_wakeup(info); |
| 452 | |
| 453 | spin_unlock_irqrestore(&(info->lock), flags); |
| 454 | |
| 455 | return 0; |
| 456 | } |
| 457 | |
| 458 | |
| 459 | static void bt3c_hci_destruct(struct hci_dev *hdev) |
| 460 | { |
| 461 | } |
| 462 | |
| 463 | |
| 464 | static int bt3c_hci_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg) |
| 465 | { |
| 466 | return -ENOIOCTLCMD; |
| 467 | } |
| 468 | |
| 469 | |
| 470 | |
| 471 | /* ======================== Card services HCI interaction ======================== */ |
| 472 | |
| 473 | |
David Woodhouse | 8187b4f | 2008-05-23 23:56:51 +0100 | [diff] [blame] | 474 | static int bt3c_load_firmware(bt3c_info_t *info, const unsigned char *firmware, |
| 475 | int count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | { |
| 477 | char *ptr = (char *) firmware; |
| 478 | char b[9]; |
| 479 | unsigned int iobase, size, addr, fcs, tmp; |
| 480 | int i, err = 0; |
| 481 | |
Dominik Brodowski | 9a017a9 | 2010-07-24 15:58:54 +0200 | [diff] [blame] | 482 | iobase = info->p_dev->resource[0]->start; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | |
| 484 | /* Reset */ |
| 485 | bt3c_io_write(iobase, 0x8040, 0x0404); |
| 486 | bt3c_io_write(iobase, 0x8040, 0x0400); |
| 487 | |
| 488 | udelay(1); |
| 489 | |
| 490 | bt3c_io_write(iobase, 0x8040, 0x0404); |
| 491 | |
| 492 | udelay(17); |
| 493 | |
| 494 | /* Load */ |
| 495 | while (count) { |
| 496 | if (ptr[0] != 'S') { |
| 497 | BT_ERR("Bad address in firmware"); |
| 498 | err = -EFAULT; |
| 499 | goto error; |
| 500 | } |
| 501 | |
| 502 | memset(b, 0, sizeof(b)); |
| 503 | memcpy(b, ptr + 2, 2); |
Julia Lawall | 51a6fbc | 2008-11-30 12:17:20 +0100 | [diff] [blame] | 504 | size = simple_strtoul(b, NULL, 16); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 505 | |
| 506 | memset(b, 0, sizeof(b)); |
| 507 | memcpy(b, ptr + 4, 8); |
Julia Lawall | 51a6fbc | 2008-11-30 12:17:20 +0100 | [diff] [blame] | 508 | addr = simple_strtoul(b, NULL, 16); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | |
| 510 | memset(b, 0, sizeof(b)); |
| 511 | memcpy(b, ptr + (size * 2) + 2, 2); |
Julia Lawall | 51a6fbc | 2008-11-30 12:17:20 +0100 | [diff] [blame] | 512 | fcs = simple_strtoul(b, NULL, 16); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | |
| 514 | memset(b, 0, sizeof(b)); |
| 515 | for (tmp = 0, i = 0; i < size; i++) { |
| 516 | memcpy(b, ptr + (i * 2) + 2, 2); |
| 517 | tmp += simple_strtol(b, NULL, 16); |
| 518 | } |
| 519 | |
| 520 | if (((tmp + fcs) & 0xff) != 0xff) { |
| 521 | BT_ERR("Checksum error in firmware"); |
| 522 | err = -EILSEQ; |
| 523 | goto error; |
| 524 | } |
| 525 | |
| 526 | if (ptr[1] == '3') { |
| 527 | bt3c_address(iobase, addr); |
| 528 | |
| 529 | memset(b, 0, sizeof(b)); |
| 530 | for (i = 0; i < (size - 4) / 2; i++) { |
| 531 | memcpy(b, ptr + (i * 4) + 12, 4); |
Julia Lawall | 51a6fbc | 2008-11-30 12:17:20 +0100 | [diff] [blame] | 532 | tmp = simple_strtoul(b, NULL, 16); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 533 | bt3c_put(iobase, tmp); |
| 534 | } |
| 535 | } |
| 536 | |
| 537 | ptr += (size * 2) + 6; |
| 538 | count -= (size * 2) + 6; |
| 539 | } |
| 540 | |
| 541 | udelay(17); |
| 542 | |
| 543 | /* Boot */ |
| 544 | bt3c_address(iobase, 0x3000); |
| 545 | outb(inb(iobase + CONTROL) | 0x40, iobase + CONTROL); |
| 546 | |
| 547 | error: |
| 548 | udelay(17); |
| 549 | |
| 550 | /* Clear */ |
| 551 | bt3c_io_write(iobase, 0x7006, 0x0000); |
| 552 | bt3c_io_write(iobase, 0x7005, 0x0000); |
| 553 | bt3c_io_write(iobase, 0x7001, 0x0000); |
| 554 | |
| 555 | return err; |
| 556 | } |
| 557 | |
| 558 | |
| 559 | static int bt3c_open(bt3c_info_t *info) |
| 560 | { |
| 561 | const struct firmware *firmware; |
| 562 | struct hci_dev *hdev; |
| 563 | int err; |
| 564 | |
| 565 | spin_lock_init(&(info->lock)); |
| 566 | |
| 567 | skb_queue_head_init(&(info->txq)); |
| 568 | |
| 569 | info->rx_state = RECV_WAIT_PACKET_TYPE; |
| 570 | info->rx_count = 0; |
| 571 | info->rx_skb = NULL; |
| 572 | |
| 573 | /* Initialize HCI device */ |
| 574 | hdev = hci_alloc_dev(); |
| 575 | if (!hdev) { |
| 576 | BT_ERR("Can't allocate HCI device"); |
| 577 | return -ENOMEM; |
| 578 | } |
| 579 | |
| 580 | info->hdev = hdev; |
| 581 | |
Marcel Holtmann | c13854c | 2010-02-08 15:27:07 +0100 | [diff] [blame] | 582 | hdev->bus = HCI_PCCARD; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 583 | hdev->driver_data = info; |
Marcel Holtmann | 27d3528 | 2006-07-03 10:02:37 +0200 | [diff] [blame] | 584 | SET_HCIDEV_DEV(hdev, &info->p_dev->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 585 | |
| 586 | hdev->open = bt3c_hci_open; |
| 587 | hdev->close = bt3c_hci_close; |
| 588 | hdev->flush = bt3c_hci_flush; |
| 589 | hdev->send = bt3c_hci_send_frame; |
| 590 | hdev->destruct = bt3c_hci_destruct; |
| 591 | hdev->ioctl = bt3c_hci_ioctl; |
| 592 | |
| 593 | hdev->owner = THIS_MODULE; |
| 594 | |
| 595 | /* Load firmware */ |
Dominik Brodowski | fd23823 | 2006-03-05 10:45:09 +0100 | [diff] [blame] | 596 | err = request_firmware(&firmware, "BT3CPCC.bin", &info->p_dev->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 597 | if (err < 0) { |
| 598 | BT_ERR("Firmware request failed"); |
| 599 | goto error; |
| 600 | } |
| 601 | |
| 602 | err = bt3c_load_firmware(info, firmware->data, firmware->size); |
| 603 | |
| 604 | release_firmware(firmware); |
| 605 | |
| 606 | if (err < 0) { |
| 607 | BT_ERR("Firmware loading failed"); |
| 608 | goto error; |
| 609 | } |
| 610 | |
| 611 | /* Timeout before it is safe to send the first HCI packet */ |
| 612 | msleep(1000); |
| 613 | |
| 614 | /* Register HCI device */ |
| 615 | err = hci_register_dev(hdev); |
| 616 | if (err < 0) { |
| 617 | BT_ERR("Can't register HCI device"); |
| 618 | goto error; |
| 619 | } |
| 620 | |
| 621 | return 0; |
| 622 | |
| 623 | error: |
| 624 | info->hdev = NULL; |
| 625 | hci_free_dev(hdev); |
| 626 | return err; |
| 627 | } |
| 628 | |
| 629 | |
| 630 | static int bt3c_close(bt3c_info_t *info) |
| 631 | { |
| 632 | struct hci_dev *hdev = info->hdev; |
| 633 | |
| 634 | if (!hdev) |
| 635 | return -ENODEV; |
| 636 | |
| 637 | bt3c_hci_close(hdev); |
| 638 | |
| 639 | if (hci_unregister_dev(hdev) < 0) |
| 640 | BT_ERR("Can't unregister HCI device %s", hdev->name); |
| 641 | |
| 642 | hci_free_dev(hdev); |
| 643 | |
| 644 | return 0; |
| 645 | } |
| 646 | |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 647 | static int bt3c_probe(struct pcmcia_device *link) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 648 | { |
| 649 | bt3c_info_t *info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 650 | |
| 651 | /* Create new info device */ |
Deepak Saxena | 089b1db | 2005-11-07 01:01:26 -0800 | [diff] [blame] | 652 | info = kzalloc(sizeof(*info), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 653 | if (!info) |
Dominik Brodowski | f8cfa61 | 2005-11-14 21:25:51 +0100 | [diff] [blame] | 654 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 655 | |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 656 | info->p_dev = link; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 657 | link->priv = info; |
| 658 | |
Dominik Brodowski | 00990e7 | 2010-07-30 13:13:46 +0200 | [diff] [blame] | 659 | link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_VPP | |
| 660 | CONF_AUTO_SET_IO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 661 | |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 662 | return bt3c_config(link); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | } |
| 664 | |
| 665 | |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 666 | static void bt3c_detach(struct pcmcia_device *link) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 667 | { |
| 668 | bt3c_info_t *info = link->priv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 669 | |
Dominik Brodowski | e2d4096 | 2006-03-02 00:09:29 +0100 | [diff] [blame] | 670 | bt3c_release(link); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 671 | kfree(info); |
| 672 | } |
| 673 | |
Dominik Brodowski | 00990e7 | 2010-07-30 13:13:46 +0200 | [diff] [blame] | 674 | static int bt3c_check_config(struct pcmcia_device *p_dev, void *priv_data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 675 | { |
Dominik Brodowski | 00990e7 | 2010-07-30 13:13:46 +0200 | [diff] [blame] | 676 | int *try = priv_data; |
Dominik Brodowski | 90abdc3 | 2010-07-24 17:23:51 +0200 | [diff] [blame] | 677 | |
Dominik Brodowski | 00990e7 | 2010-07-30 13:13:46 +0200 | [diff] [blame] | 678 | if (try == 0) |
| 679 | p_dev->io_lines = 16; |
| 680 | |
| 681 | if ((p_dev->resource[0]->end != 8) || (p_dev->resource[0]->start == 0)) |
| 682 | return -EINVAL; |
| 683 | |
| 684 | p_dev->resource[0]->end = 8; |
| 685 | p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; |
| 686 | p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; |
| 687 | |
| 688 | return pcmcia_request_io(p_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 689 | } |
| 690 | |
Dominik Brodowski | ed58872 | 2008-07-29 08:38:55 +0200 | [diff] [blame] | 691 | static int bt3c_check_config_notpicky(struct pcmcia_device *p_dev, |
Dominik Brodowski | ed58872 | 2008-07-29 08:38:55 +0200 | [diff] [blame] | 692 | void *priv_data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 693 | { |
Dominik Brodowski | ed58872 | 2008-07-29 08:38:55 +0200 | [diff] [blame] | 694 | static unsigned int base[5] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8, 0x0 }; |
| 695 | int j; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 696 | |
Dominik Brodowski | 00990e7 | 2010-07-30 13:13:46 +0200 | [diff] [blame] | 697 | if (p_dev->io_lines > 3) |
| 698 | return -ENODEV; |
| 699 | |
| 700 | p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; |
| 701 | p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; |
| 702 | p_dev->resource[0]->end = 8; |
| 703 | |
| 704 | for (j = 0; j < 5; j++) { |
| 705 | p_dev->resource[0]->start = base[j]; |
| 706 | p_dev->io_lines = base[j] ? 16 : 3; |
| 707 | if (!pcmcia_request_io(p_dev)) |
| 708 | return 0; |
Dominik Brodowski | ed58872 | 2008-07-29 08:38:55 +0200 | [diff] [blame] | 709 | } |
| 710 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 711 | } |
| 712 | |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 713 | static int bt3c_config(struct pcmcia_device *link) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 714 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 715 | bt3c_info_t *info = link->priv; |
Dominik Brodowski | ed58872 | 2008-07-29 08:38:55 +0200 | [diff] [blame] | 716 | int i; |
| 717 | unsigned long try; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 718 | |
Dominik Brodowski | ed58872 | 2008-07-29 08:38:55 +0200 | [diff] [blame] | 719 | /* First pass: look for a config entry that looks normal. |
| 720 | Two tries: without IO aliases, then with aliases */ |
| 721 | for (try = 0; try < 2; try++) |
| 722 | if (!pcmcia_loop_config(link, bt3c_check_config, (void *) try)) |
| 723 | goto found_port; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 724 | |
| 725 | /* Second pass: try to find an entry that isn't picky about |
| 726 | its base address, then try to grab any standard serial port |
| 727 | address, and finally try to get any free port. */ |
Dominik Brodowski | ed58872 | 2008-07-29 08:38:55 +0200 | [diff] [blame] | 728 | if (!pcmcia_loop_config(link, bt3c_check_config_notpicky, NULL)) |
| 729 | goto found_port; |
| 730 | |
| 731 | BT_ERR("No usable port range found"); |
Dominik Brodowski | ed58872 | 2008-07-29 08:38:55 +0200 | [diff] [blame] | 732 | goto failed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 733 | |
| 734 | found_port: |
Dominik Brodowski | eb14120 | 2010-03-07 12:21:16 +0100 | [diff] [blame] | 735 | i = pcmcia_request_irq(link, &bt3c_interrupt); |
Dominik Brodowski | 9ac3e58 | 2009-10-24 15:45:06 +0200 | [diff] [blame] | 736 | if (i != 0) |
Dominik Brodowski | eb14120 | 2010-03-07 12:21:16 +0100 | [diff] [blame] | 737 | goto failed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 738 | |
Dominik Brodowski | 1ac71e5 | 2010-07-29 19:27:09 +0200 | [diff] [blame] | 739 | i = pcmcia_enable_device(link); |
Dominik Brodowski | 9ac3e58 | 2009-10-24 15:45:06 +0200 | [diff] [blame] | 740 | if (i != 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 741 | goto failed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 742 | |
| 743 | if (bt3c_open(info) != 0) |
| 744 | goto failed; |
| 745 | |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 746 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 747 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 748 | failed: |
| 749 | bt3c_release(link); |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 750 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 751 | } |
| 752 | |
| 753 | |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 754 | static void bt3c_release(struct pcmcia_device *link) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 755 | { |
| 756 | bt3c_info_t *info = link->priv; |
| 757 | |
Dominik Brodowski | e2d4096 | 2006-03-02 00:09:29 +0100 | [diff] [blame] | 758 | bt3c_close(info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 759 | |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 760 | pcmcia_disable_device(link); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 761 | } |
| 762 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | |
Dominik Brodowski | a01c3ed | 2005-06-27 16:28:37 -0700 | [diff] [blame] | 764 | static struct pcmcia_device_id bt3c_ids[] = { |
| 765 | PCMCIA_DEVICE_PROD_ID13("3COM", "Bluetooth PC Card", 0xefce0a31, 0xd4ce9b02), |
| 766 | PCMCIA_DEVICE_NULL |
| 767 | }; |
| 768 | MODULE_DEVICE_TABLE(pcmcia, bt3c_ids); |
| 769 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 770 | static struct pcmcia_driver bt3c_driver = { |
| 771 | .owner = THIS_MODULE, |
Dominik Brodowski | 2e9b981 | 2010-08-08 11:36:26 +0200 | [diff] [blame^] | 772 | .name = "bt3c_cs", |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 773 | .probe = bt3c_probe, |
Dominik Brodowski | cc3b486 | 2005-11-14 21:23:14 +0100 | [diff] [blame] | 774 | .remove = bt3c_detach, |
Dominik Brodowski | a01c3ed | 2005-06-27 16:28:37 -0700 | [diff] [blame] | 775 | .id_table = bt3c_ids, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 776 | }; |
| 777 | |
| 778 | static int __init init_bt3c_cs(void) |
| 779 | { |
| 780 | return pcmcia_register_driver(&bt3c_driver); |
| 781 | } |
| 782 | |
| 783 | |
| 784 | static void __exit exit_bt3c_cs(void) |
| 785 | { |
| 786 | pcmcia_unregister_driver(&bt3c_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 787 | } |
| 788 | |
| 789 | module_init(init_bt3c_cs); |
| 790 | module_exit(exit_bt3c_cs); |