drivers/bluetooth/bluecard_cs.c

   1 /*
   2  *
   3  *  Bluetooth driver for the Anycom BlueCard (LSE039/LSE041)
   4  *
   5  *  Copyright (C) 2001-2002  Marcel Holtmann <marcel@holtmann.org>
   6  *
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License version 2 as
  10  *  published by the Free Software Foundation;
  11  *
  12  *  Software distributed under the License is distributed on an "AS
  13  *  IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
  14  *  implied. See the License for the specific language governing
  15  *  rights and limitations under the License.
  16  *
  17  *  The initial developer of the original code is David A. Hinds
  18  *  <dahinds@users.sourceforge.net>.  Portions created by David A. Hinds
  19  *  are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
  20  *
  21  */
  22
  23 #include <linux/config.h>
  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>
  30 #include <linux/sched.h>
  31 #include <linux/delay.h>
  32 #include <linux/timer.h>
  33 #include <linux/errno.h>
  34 #include <linux/ptrace.h>
  35 #include <linux/ioport.h>
  36 #include <linux/spinlock.h>
  37 #include <linux/moduleparam.h>
  38 #include <linux/wait.h>
  39
  40 #include <linux/skbuff.h>
  41 #include <asm/io.h>
  42
  43 #include <pcmcia/cs_types.h>
  44 #include <pcmcia/cs.h>
  45 #include <pcmcia/cistpl.h>
  46 #include <pcmcia/ciscode.h>
  47 #include <pcmcia/ds.h>
  48 #include <pcmcia/cisreg.h>
  49
  50 #include <net/bluetooth/bluetooth.h>
  51 #include <net/bluetooth/hci_core.h>
  52
  53
  54
  55 /* ======================== Module parameters ======================== */
  56
  57
  58 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
  59 MODULE_DESCRIPTION("Bluetooth driver for the Anycom BlueCard (LSE039/LSE041)");
  60 MODULE_LICENSE("GPL");
  61
  62
  63
  64 /* ======================== Local structures ======================== */
  65
  66
  67 typedef struct bluecard_info_t {
  68         dev_link_t link;
  69         dev_node_t node;
  70
  71         struct hci_dev *hdev;
  72
  73         spinlock_t lock;                /* For serializing operations */
  74         struct timer_list timer;        /* For LED control */
  75
  76         struct sk_buff_head txq;
  77         unsigned long tx_state;
  78
  79         unsigned long rx_state;
  80         unsigned long rx_count;
  81         struct sk_buff *rx_skb;
  82
  83         unsigned char ctrl_reg;
  84         unsigned long hw_state;         /* Status of the hardware and LED control */
  85 } bluecard_info_t;
  86
  87
  88 static void bluecard_config(dev_link_t *link);
  89 static void bluecard_release(dev_link_t *link);
  90 static int bluecard_event(event_t event, int priority, event_callback_args_t *args);
  91
  92 static dev_info_t dev_info = "bluecard_cs";
  93
  94 static dev_link_t *bluecard_attach(void);
  95 static void bluecard_detach(dev_link_t *);
  96
  97 static dev_link_t *dev_list = NULL;
  98
  99
 100 /* Default baud rate: 57600, 115200, 230400 or 460800 */
 101 #define DEFAULT_BAUD_RATE  230400
 102
 103
 104 /* Hardware states */
 105 #define CARD_READY             1
 106 #define CARD_HAS_PCCARD_ID     4
 107 #define CARD_HAS_POWER_LED     5
 108 #define CARD_HAS_ACTIVITY_LED  6
 109
 110 /* Transmit states  */
 111 #define XMIT_SENDING         1
 112 #define XMIT_WAKEUP          2
 113 #define XMIT_BUFFER_NUMBER   5  /* unset = buffer one, set = buffer two */
 114 #define XMIT_BUF_ONE_READY   6
 115 #define XMIT_BUF_TWO_READY   7
 116 #define XMIT_SENDING_READY   8
 117
 118 /* Receiver states */
 119 #define RECV_WAIT_PACKET_TYPE   0
 120 #define RECV_WAIT_EVENT_HEADER  1
 121 #define RECV_WAIT_ACL_HEADER    2
 122 #define RECV_WAIT_SCO_HEADER    3
 123 #define RECV_WAIT_DATA          4
 124
 125 /* Special packet types */
 126 #define PKT_BAUD_RATE_57600   0x80
 127 #define PKT_BAUD_RATE_115200  0x81
 128 #define PKT_BAUD_RATE_230400  0x82
 129 #define PKT_BAUD_RATE_460800  0x83
 130
 131
 132 /* These are the register offsets */
 133 #define REG_COMMAND     0x20
 134 #define REG_INTERRUPT   0x21
 135 #define REG_CONTROL     0x22
 136 #define REG_RX_CONTROL  0x24
 137 #define REG_CARD_RESET  0x30
 138 #define REG_LED_CTRL    0x30
 139
 140 /* REG_COMMAND */
 141 #define REG_COMMAND_TX_BUF_ONE  0x01
 142 #define REG_COMMAND_TX_BUF_TWO  0x02
 143 #define REG_COMMAND_RX_BUF_ONE  0x04
 144 #define REG_COMMAND_RX_BUF_TWO  0x08
 145 #define REG_COMMAND_RX_WIN_ONE  0x00
 146 #define REG_COMMAND_RX_WIN_TWO  0x10
 147
 148 /* REG_CONTROL */
 149 #define REG_CONTROL_BAUD_RATE_57600   0x00
 150 #define REG_CONTROL_BAUD_RATE_115200  0x01
 151 #define REG_CONTROL_BAUD_RATE_230400  0x02
 152 #define REG_CONTROL_BAUD_RATE_460800  0x03
 153 #define REG_CONTROL_RTS               0x04
 154 #define REG_CONTROL_BT_ON             0x08
 155 #define REG_CONTROL_BT_RESET          0x10
 156 #define REG_CONTROL_BT_RES_PU         0x20
 157 #define REG_CONTROL_INTERRUPT         0x40
 158 #define REG_CONTROL_CARD_RESET        0x80
 159
 160 /* REG_RX_CONTROL */
 161 #define RTS_LEVEL_SHIFT_BITS  0x02
 162
 163
 164
 165 /* ======================== LED handling routines ======================== */
 166
 167
 168 static void bluecard_activity_led_timeout(u_long arg)
 169 {
 170         bluecard_info_t *info = (bluecard_info_t *)arg;
 171         unsigned int iobase = info->link.io.BasePort1;
 172
 173         if (!test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
 174                 return;
 175
 176         if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) {
 177                 /* Disable activity LED */
 178                 outb(0x08 | 0x20, iobase + 0x30);
 179         } else {
 180                 /* Disable power LED */
 181                 outb(0x00, iobase + 0x30);
 182         }
 183 }
 184
 185
 186 static void bluecard_enable_activity_led(bluecard_info_t *info)
 187 {
 188         unsigned int iobase = info->link.io.BasePort1;
 189
 190         if (!test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
 191                 return;
 192
 193         if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) {
 194                 /* Enable activity LED */
 195                 outb(0x10 | 0x40, iobase + 0x30);
 196
 197                 /* Stop the LED after HZ/4 */
 198                 mod_timer(&(info->timer), jiffies + HZ / 4);
 199         } else {
 200                 /* Enable power LED */
 201                 outb(0x08 | 0x20, iobase + 0x30);
 202
 203                 /* Stop the LED after HZ/2 */
 204                 mod_timer(&(info->timer), jiffies + HZ / 2);
 205         }
 206 }
 207
 208
 209
 210 /* ======================== Interrupt handling ======================== */
 211
 212
 213 static int bluecard_write(unsigned int iobase, unsigned int offset, __u8 *buf, int len)
 214 {
 215         int i, actual;
 216
 217         actual = (len > 15) ? 15 : len;
 218
 219         outb_p(actual, iobase + offset);
 220
 221         for (i = 0; i < actual; i++)
 222                 outb_p(buf[i], iobase + offset + i + 1);
 223
 224         return actual;
 225 }
 226
 227
 228 static void bluecard_write_wakeup(bluecard_info_t *info)
 229 {
 230         if (!info) {
 231                 BT_ERR("Unknown device");
 232                 return;
 233         }
 234
 235         if (!test_bit(XMIT_SENDING_READY, &(info->tx_state)))
 236                 return;
 237
 238         if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) {
 239                 set_bit(XMIT_WAKEUP, &(info->tx_state));
 240                 return;
 241         }
 242
 243         do {
 244                 register unsigned int iobase = info->link.io.BasePort1;
 245                 register unsigned int offset;
 246                 register unsigned char command;
 247                 register unsigned long ready_bit;
 248                 register struct sk_buff *skb;
 249                 register int len;
 250
 251                 clear_bit(XMIT_WAKEUP, &(info->tx_state));
 252
 253                 if (!(info->link.state & DEV_PRESENT))
 254                         return;
 255
 256                 if (test_bit(XMIT_BUFFER_NUMBER, &(info->tx_state))) {
 257                         if (!test_bit(XMIT_BUF_TWO_READY, &(info->tx_state)))
 258                                 break;
 259                         offset = 0x10;
 260                         command = REG_COMMAND_TX_BUF_TWO;
 261                         ready_bit = XMIT_BUF_TWO_READY;
 262                 } else {
 263                         if (!test_bit(XMIT_BUF_ONE_READY, &(info->tx_state)))
 264                                 break;
 265                         offset = 0x00;
 266                         command = REG_COMMAND_TX_BUF_ONE;
 267                         ready_bit = XMIT_BUF_ONE_READY;
 268                 }
 269
 270                 if (!(skb = skb_dequeue(&(info->txq))))
 271                         break;
 272
 273                 if (skb->pkt_type & 0x80) {
 274                         /* Disable RTS */
 275                         info->ctrl_reg |= REG_CONTROL_RTS;
 276                         outb(info->ctrl_reg, iobase + REG_CONTROL);
 277                 }
 278
 279                 /* Activate LED */
 280                 bluecard_enable_activity_led(info);
 281
 282                 /* Send frame */
 283                 len = bluecard_write(iobase, offset, skb->data, skb->len);
 284
 285                 /* Tell the FPGA to send the data */
 286                 outb_p(command, iobase + REG_COMMAND);
 287
 288                 /* Mark the buffer as dirty */
 289                 clear_bit(ready_bit, &(info->tx_state));
 290
 291                 if (skb->pkt_type & 0x80) {
 292                         DECLARE_WAIT_QUEUE_HEAD(wq);
 293                         DEFINE_WAIT(wait);
 294
 295                         unsigned char baud_reg;
 296
 297                         switch (skb->pkt_type) {
 298                         case PKT_BAUD_RATE_460800:
 299                                 baud_reg = REG_CONTROL_BAUD_RATE_460800;
 300                                 break;
 301                         case PKT_BAUD_RATE_230400:
 302                                 baud_reg = REG_CONTROL_BAUD_RATE_230400;
 303                                 break;
 304                         case PKT_BAUD_RATE_115200:
 305                                 baud_reg = REG_CONTROL_BAUD_RATE_115200;
 306                                 break;
 307                         case PKT_BAUD_RATE_57600:
 308                                 /* Fall through... */
 309                         default:
 310                                 baud_reg = REG_CONTROL_BAUD_RATE_57600;
 311                                 break;
 312                         }
 313
 314                         /* Wait until the command reaches the baseband */
 315                         prepare_to_wait(&wq, &wait, TASK_INTERRUPTIBLE);
 316                         schedule_timeout(HZ/10);
 317                         finish_wait(&wq, &wait);
 318
 319                         /* Set baud on baseband */
 320                         info->ctrl_reg &= ~0x03;
 321                         info->ctrl_reg |= baud_reg;
 322                         outb(info->ctrl_reg, iobase + REG_CONTROL);
 323
 324                         /* Enable RTS */
 325                         info->ctrl_reg &= ~REG_CONTROL_RTS;
 326                         outb(info->ctrl_reg, iobase + REG_CONTROL);
 327
 328                         /* Wait before the next HCI packet can be send */
 329                         prepare_to_wait(&wq, &wait, TASK_INTERRUPTIBLE);
 330                         schedule_timeout(HZ);
 331                         finish_wait(&wq, &wait);
 332                 }
 333
 334                 if (len == skb->len) {
 335                         kfree_skb(skb);
 336                 } else {
 337                         skb_pull(skb, len);
 338                         skb_queue_head(&(info->txq), skb);
 339                 }
 340
 341                 info->hdev->stat.byte_tx += len;
 342
 343                 /* Change buffer */
 344                 change_bit(XMIT_BUFFER_NUMBER, &(info->tx_state));
 345
 346         } while (test_bit(XMIT_WAKEUP, &(info->tx_state)));
 347
 348         clear_bit(XMIT_SENDING, &(info->tx_state));
 349 }
 350
 351
 352 static int bluecard_read(unsigned int iobase, unsigned int offset, __u8 *buf, int size)
 353 {
 354         int i, n, len;
 355
 356         outb(REG_COMMAND_RX_WIN_ONE, iobase + REG_COMMAND);
 357
 358         len = inb(iobase + offset);
 359         n = 0;
 360         i = 1;
 361
 362         while (n < len) {
 363
 364                 if (i == 16) {
 365                         outb(REG_COMMAND_RX_WIN_TWO, iobase + REG_COMMAND);
 366                         i = 0;
 367                 }
 368
 369                 buf[n] = inb(iobase + offset + i);
 370
 371                 n++;
 372                 i++;
 373
 374         }
 375
 376         return len;
 377 }
 378
 379
 380 static void bluecard_receive(bluecard_info_t *info, unsigned int offset)
 381 {
 382         unsigned int iobase;
 383         unsigned char buf[31];
 384         int i, len;
 385
 386         if (!info) {
 387                 BT_ERR("Unknown device");
 388                 return;
 389         }
 390
 391         iobase = info->link.io.BasePort1;
 392
 393         if (test_bit(XMIT_SENDING_READY, &(info->tx_state)))
 394                 bluecard_enable_activity_led(info);
 395
 396         len = bluecard_read(iobase, offset, buf, sizeof(buf));
 397
 398         for (i = 0; i < len; i++) {
 399
 400                 /* Allocate packet */
 401                 if (info->rx_skb == NULL) {
 402                         info->rx_state = RECV_WAIT_PACKET_TYPE;
 403                         info->rx_count = 0;
 404                         if (!(info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
 405                                 BT_ERR("Can't allocate mem for new packet");
 406                                 return;
 407                         }
 408                 }
 409
 410                 if (info->rx_state == RECV_WAIT_PACKET_TYPE) {
 411
 412                         info->rx_skb->dev = (void *) info->hdev;
 413                         info->rx_skb->pkt_type = buf[i];
 414
 415                         switch (info->rx_skb->pkt_type) {
 416
 417                         case 0x00:
 418                                 /* init packet */
 419                                 if (offset != 0x00) {
 420                                         set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 421                                         set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 422                                         set_bit(XMIT_SENDING_READY, &(info->tx_state));
 423                                         bluecard_write_wakeup(info);
 424                                 }
 425
 426                                 kfree_skb(info->rx_skb);
 427                                 info->rx_skb = NULL;
 428                                 break;
 429
 430                         case HCI_EVENT_PKT:
 431                                 info->rx_state = RECV_WAIT_EVENT_HEADER;
 432                                 info->rx_count = HCI_EVENT_HDR_SIZE;
 433                                 break;
 434
 435                         case HCI_ACLDATA_PKT:
 436                                 info->rx_state = RECV_WAIT_ACL_HEADER;
 437                                 info->rx_count = HCI_ACL_HDR_SIZE;
 438                                 break;
 439
 440                         case HCI_SCODATA_PKT:
 441                                 info->rx_state = RECV_WAIT_SCO_HEADER;
 442                                 info->rx_count = HCI_SCO_HDR_SIZE;
 443                                 break;
 444
 445                         default:
 446                                 /* unknown packet */
 447                                 BT_ERR("Unknown HCI packet with type 0x%02x received", info->rx_skb->pkt_type);
 448                                 info->hdev->stat.err_rx++;
 449
 450                                 kfree_skb(info->rx_skb);
 451                                 info->rx_skb = NULL;
 452                                 break;
 453
 454                         }
 455
 456                 } else {
 457
 458                         *skb_put(info->rx_skb, 1) = buf[i];
 459                         info->rx_count--;
 460
 461                         if (info->rx_count == 0) {
 462
 463                                 int dlen;
 464                                 struct hci_event_hdr *eh;
 465                                 struct hci_acl_hdr *ah;
 466                                 struct hci_sco_hdr *sh;
 467
 468                                 switch (info->rx_state) {
 469
 470                                 case RECV_WAIT_EVENT_HEADER:
 471                                         eh = (struct hci_event_hdr *)(info->rx_skb->data);
 472                                         info->rx_state = RECV_WAIT_DATA;
 473                                         info->rx_count = eh->plen;
 474                                         break;
 475
 476                                 case RECV_WAIT_ACL_HEADER:
 477                                         ah = (struct hci_acl_hdr *)(info->rx_skb->data);
 478                                         dlen = __le16_to_cpu(ah->dlen);
 479                                         info->rx_state = RECV_WAIT_DATA;
 480                                         info->rx_count = dlen;
 481                                         break;
 482
 483                                 case RECV_WAIT_SCO_HEADER:
 484                                         sh = (struct hci_sco_hdr *)(info->rx_skb->data);
 485                                         info->rx_state = RECV_WAIT_DATA;
 486                                         info->rx_count = sh->dlen;
 487                                         break;
 488
 489                                 case RECV_WAIT_DATA:
 490                                         hci_recv_frame(info->rx_skb);
 491                                         info->rx_skb = NULL;
 492                                         break;
 493
 494                                 }
 495
 496                         }
 497
 498                 }
 499
 500
 501         }
 502
 503         info->hdev->stat.byte_rx += len;
 504 }
 505
 506
 507 static irqreturn_t bluecard_interrupt(int irq, void *dev_inst, struct pt_regs *regs)
 508 {
 509         bluecard_info_t *info = dev_inst;
 510         unsigned int iobase;
 511         unsigned char reg;
 512
 513         if (!info || !info->hdev) {
 514                 BT_ERR("Call of irq %d for unknown device", irq);
 515                 return IRQ_NONE;
 516         }
 517
 518         if (!test_bit(CARD_READY, &(info->hw_state)))
 519                 return IRQ_HANDLED;
 520
 521         iobase = info->link.io.BasePort1;
 522
 523         spin_lock(&(info->lock));
 524
 525         /* Disable interrupt */
 526         info->ctrl_reg &= ~REG_CONTROL_INTERRUPT;
 527         outb(info->ctrl_reg, iobase + REG_CONTROL);
 528
 529         reg = inb(iobase + REG_INTERRUPT);
 530
 531         if ((reg != 0x00) && (reg != 0xff)) {
 532
 533                 if (reg & 0x04) {
 534                         bluecard_receive(info, 0x00);
 535                         outb(0x04, iobase + REG_INTERRUPT);
 536                         outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
 537                 }
 538
 539                 if (reg & 0x08) {
 540                         bluecard_receive(info, 0x10);
 541                         outb(0x08, iobase + REG_INTERRUPT);
 542                         outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
 543                 }
 544
 545                 if (reg & 0x01) {
 546                         set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 547                         outb(0x01, iobase + REG_INTERRUPT);
 548                         bluecard_write_wakeup(info);
 549                 }
 550
 551                 if (reg & 0x02) {
 552                         set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 553                         outb(0x02, iobase + REG_INTERRUPT);
 554                         bluecard_write_wakeup(info);
 555                 }
 556
 557         }
 558
 559         /* Enable interrupt */
 560         info->ctrl_reg |= REG_CONTROL_INTERRUPT;
 561         outb(info->ctrl_reg, iobase + REG_CONTROL);
 562
 563         spin_unlock(&(info->lock));
 564
 565         return IRQ_HANDLED;
 566 }
 567
 568
 569
 570 /* ======================== Device specific HCI commands ======================== */
 571
 572
 573 static int bluecard_hci_set_baud_rate(struct hci_dev *hdev, int baud)
 574 {
 575         bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
 576         struct sk_buff *skb;
 577
 578         /* Ericsson baud rate command */
 579         unsigned char cmd[] = { HCI_COMMAND_PKT, 0x09, 0xfc, 0x01, 0x03 };
 580
 581         if (!(skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
 582                 BT_ERR("Can't allocate mem for new packet");
 583                 return -1;
 584         }
 585
 586         switch (baud) {
 587         case 460800:
 588                 cmd[4] = 0x00;
 589                 skb->pkt_type = PKT_BAUD_RATE_460800;
 590                 break;
 591         case 230400:
 592                 cmd[4] = 0x01;
 593                 skb->pkt_type = PKT_BAUD_RATE_230400;
 594                 break;
 595         case 115200:
 596                 cmd[4] = 0x02;
 597                 skb->pkt_type = PKT_BAUD_RATE_115200;
 598                 break;
 599         case 57600:
 600                 /* Fall through... */
 601         default:
 602                 cmd[4] = 0x03;
 603                 skb->pkt_type = PKT_BAUD_RATE_57600;
 604                 break;
 605         }
 606
 607         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
 608
 609         skb_queue_tail(&(info->txq), skb);
 610
 611         bluecard_write_wakeup(info);
 612
 613         return 0;
 614 }
 615
 616
 617
 618 /* ======================== HCI interface ======================== */
 619
 620
 621 static int bluecard_hci_flush(struct hci_dev *hdev)
 622 {
 623         bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
 624
 625         /* Drop TX queue */
 626         skb_queue_purge(&(info->txq));
 627
 628         return 0;
 629 }
 630
 631
 632 static int bluecard_hci_open(struct hci_dev *hdev)
 633 {
 634         bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
 635         unsigned int iobase = info->link.io.BasePort1;
 636
 637         if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
 638                 bluecard_hci_set_baud_rate(hdev, DEFAULT_BAUD_RATE);
 639
 640         if (test_and_set_bit(HCI_RUNNING, &(hdev->flags)))
 641                 return 0;
 642
 643         if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
 644                 /* Enable LED */
 645                 outb(0x08 | 0x20, iobase + 0x30);
 646         }
 647
 648         return 0;
 649 }
 650
 651
 652 static int bluecard_hci_close(struct hci_dev *hdev)
 653 {
 654         bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
 655         unsigned int iobase = info->link.io.BasePort1;
 656
 657         if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags)))
 658                 return 0;
 659
 660         bluecard_hci_flush(hdev);
 661
 662         if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
 663                 /* Disable LED */
 664                 outb(0x00, iobase + 0x30);
 665         }
 666
 667         return 0;
 668 }
 669
 670
 671 static int bluecard_hci_send_frame(struct sk_buff *skb)
 672 {
 673         bluecard_info_t *info;
 674         struct hci_dev *hdev = (struct hci_dev *)(skb->dev);
 675
 676         if (!hdev) {
 677                 BT_ERR("Frame for unknown HCI device (hdev=NULL)");
 678                 return -ENODEV;
 679         }
 680
 681         info = (bluecard_info_t *)(hdev->driver_data);
 682
 683         switch (skb->pkt_type) {
 684         case HCI_COMMAND_PKT:
 685                 hdev->stat.cmd_tx++;
 686                 break;
 687         case HCI_ACLDATA_PKT:
 688                 hdev->stat.acl_tx++;
 689                 break;
 690         case HCI_SCODATA_PKT:
 691                 hdev->stat.sco_tx++;
 692                 break;
 693         };
 694
 695         /* Prepend skb with frame type */
 696         memcpy(skb_push(skb, 1), &(skb->pkt_type), 1);
 697         skb_queue_tail(&(info->txq), skb);
 698
 699         bluecard_write_wakeup(info);
 700
 701         return 0;
 702 }
 703
 704
 705 static void bluecard_hci_destruct(struct hci_dev *hdev)
 706 {
 707 }
 708
 709
 710 static int bluecard_hci_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg)
 711 {
 712         return -ENOIOCTLCMD;
 713 }
 714
 715
 716
 717 /* ======================== Card services HCI interaction ======================== */
 718
 719
 720 static int bluecard_open(bluecard_info_t *info)
 721 {
 722         unsigned int iobase = info->link.io.BasePort1;
 723         struct hci_dev *hdev;
 724         unsigned char id;
 725
 726         spin_lock_init(&(info->lock));
 727
 728         init_timer(&(info->timer));
 729         info->timer.function = &bluecard_activity_led_timeout;
 730         info->timer.data = (u_long)info;
 731
 732         skb_queue_head_init(&(info->txq));
 733
 734         info->rx_state = RECV_WAIT_PACKET_TYPE;
 735         info->rx_count = 0;
 736         info->rx_skb = NULL;
 737
 738         /* Initialize HCI device */
 739         hdev = hci_alloc_dev();
 740         if (!hdev) {
 741                 BT_ERR("Can't allocate HCI device");
 742                 return -ENOMEM;
 743         }
 744
 745         info->hdev = hdev;
 746
 747         hdev->type = HCI_PCCARD;
 748         hdev->driver_data = info;
 749
 750         hdev->open     = bluecard_hci_open;
 751         hdev->close    = bluecard_hci_close;
 752         hdev->flush    = bluecard_hci_flush;
 753         hdev->send     = bluecard_hci_send_frame;
 754         hdev->destruct = bluecard_hci_destruct;
 755         hdev->ioctl    = bluecard_hci_ioctl;
 756
 757         hdev->owner = THIS_MODULE;
 758
 759         id = inb(iobase + 0x30);
 760
 761         if ((id & 0x0f) == 0x02)
 762                 set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state));
 763
 764         if (id & 0x10)
 765                 set_bit(CARD_HAS_POWER_LED, &(info->hw_state));
 766
 767         if (id & 0x20)
 768                 set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state));
 769
 770         /* Reset card */
 771         info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
 772         outb(info->ctrl_reg, iobase + REG_CONTROL);
 773
 774         /* Turn FPGA off */
 775         outb(0x80, iobase + 0x30);
 776
 777         /* Wait some time */
 778         msleep(10);
 779
 780         /* Turn FPGA on */
 781         outb(0x00, iobase + 0x30);
 782
 783         /* Activate card */
 784         info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU;
 785         outb(info->ctrl_reg, iobase + REG_CONTROL);
 786
 787         /* Enable interrupt */
 788         outb(0xff, iobase + REG_INTERRUPT);
 789         info->ctrl_reg |= REG_CONTROL_INTERRUPT;
 790         outb(info->ctrl_reg, iobase + REG_CONTROL);
 791
 792         if ((id & 0x0f) == 0x03) {
 793                 /* Disable RTS */
 794                 info->ctrl_reg |= REG_CONTROL_RTS;
 795                 outb(info->ctrl_reg, iobase + REG_CONTROL);
 796
 797                 /* Set baud rate */
 798                 info->ctrl_reg |= 0x03;
 799                 outb(info->ctrl_reg, iobase + REG_CONTROL);
 800
 801                 /* Enable RTS */
 802                 info->ctrl_reg &= ~REG_CONTROL_RTS;
 803                 outb(info->ctrl_reg, iobase + REG_CONTROL);
 804
 805                 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 806                 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 807                 set_bit(XMIT_SENDING_READY, &(info->tx_state));
 808         }
 809
 810         /* Start the RX buffers */
 811         outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
 812         outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
 813
 814         /* Signal that the hardware is ready */
 815         set_bit(CARD_READY, &(info->hw_state));
 816
 817         /* Drop TX queue */
 818         skb_queue_purge(&(info->txq));
 819
 820         /* Control the point at which RTS is enabled */
 821         outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL);
 822
 823         /* Timeout before it is safe to send the first HCI packet */
 824         msleep(1250);
 825
 826         /* Register HCI device */
 827         if (hci_register_dev(hdev) < 0) {
 828                 BT_ERR("Can't register HCI device");
 829                 info->hdev = NULL;
 830                 hci_free_dev(hdev);
 831                 return -ENODEV;
 832         }
 833
 834         return 0;
 835 }
 836
 837
 838 static int bluecard_close(bluecard_info_t *info)
 839 {
 840         unsigned int iobase = info->link.io.BasePort1;
 841         struct hci_dev *hdev = info->hdev;
 842
 843         if (!hdev)
 844                 return -ENODEV;
 845
 846         bluecard_hci_close(hdev);
 847
 848         clear_bit(CARD_READY, &(info->hw_state));
 849
 850         /* Reset card */
 851         info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
 852         outb(info->ctrl_reg, iobase + REG_CONTROL);
 853
 854         /* Turn FPGA off */
 855         outb(0x80, iobase + 0x30);
 856
 857         if (hci_unregister_dev(hdev) < 0)
 858                 BT_ERR("Can't unregister HCI device %s", hdev->name);
 859
 860         hci_free_dev(hdev);
 861
 862         return 0;
 863 }
 864
 865 static dev_link_t *bluecard_attach(void)
 866 {
 867         bluecard_info_t *info;
 868         client_reg_t client_reg;
 869         dev_link_t *link;
 870         int ret;
 871
 872         /* Create new info device */
 873         info = kmalloc(sizeof(*info), GFP_KERNEL);
 874         if (!info)
 875                 return NULL;
 876         memset(info, 0, sizeof(*info));
 877
 878         link = &info->link;
 879         link->priv = info;
 880
 881         link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
 882         link->io.NumPorts1 = 8;
 883         link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
 884         link->irq.IRQInfo1 = IRQ_LEVEL_ID;
 885
 886         link->irq.Handler = bluecard_interrupt;
 887         link->irq.Instance = info;
 888
 889         link->conf.Attributes = CONF_ENABLE_IRQ;
 890         link->conf.Vcc = 50;
 891         link->conf.IntType = INT_MEMORY_AND_IO;
 892
 893         /* Register with Card Services */
 894         link->next = dev_list;
 895         dev_list = link;
 896         client_reg.dev_info = &dev_info;
 897         client_reg.Version = 0x0210;
 898         client_reg.event_callback_args.client_data = link;
 899
 900         ret = pcmcia_register_client(&link->handle, &client_reg);
 901         if (ret != CS_SUCCESS) {
 902                 cs_error(link->handle, RegisterClient, ret);
 903                 bluecard_detach(link);
 904                 return NULL;
 905         }
 906
 907         return link;
 908 }
 909
 910
 911 static void bluecard_detach(dev_link_t *link)
 912 {
 913         bluecard_info_t *info = link->priv;
 914         dev_link_t **linkp;
 915         int ret;
 916
 917         /* Locate device structure */
 918         for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
 919                 if (*linkp == link)
 920                         break;
 921
 922         if (*linkp == NULL)
 923                 return;
 924
 925         if (link->state & DEV_CONFIG)
 926                 bluecard_release(link);
 927
 928         if (link->handle) {
 929                 ret = pcmcia_deregister_client(link->handle);
 930                 if (ret != CS_SUCCESS)
 931                         cs_error(link->handle, DeregisterClient, ret);
 932         }
 933
 934         /* Unlink device structure, free bits */
 935         *linkp = link->next;
 936
 937         kfree(info);
 938 }
 939
 940
 941 static int first_tuple(client_handle_t handle, tuple_t *tuple, cisparse_t *parse)
 942 {
 943         int i;
 944
 945         i = pcmcia_get_first_tuple(handle, tuple);
 946         if (i != CS_SUCCESS)
 947                 return CS_NO_MORE_ITEMS;
 948
 949         i = pcmcia_get_tuple_data(handle, tuple);
 950         if (i != CS_SUCCESS)
 951                 return i;
 952
 953         return pcmcia_parse_tuple(handle, tuple, parse);
 954 }
 955
 956 static void bluecard_config(dev_link_t *link)
 957 {
 958         client_handle_t handle = link->handle;
 959         bluecard_info_t *info = link->priv;
 960         tuple_t tuple;
 961         u_short buf[256];
 962         cisparse_t parse;
 963         config_info_t config;
 964         int i, n, last_ret, last_fn;
 965
 966         tuple.TupleData = (cisdata_t *)buf;
 967         tuple.TupleOffset = 0;
 968         tuple.TupleDataMax = 255;
 969         tuple.Attributes = 0;
 970
 971         /* Get configuration register information */
 972         tuple.DesiredTuple = CISTPL_CONFIG;
 973         last_ret = first_tuple(handle, &tuple, &parse);
 974         if (last_ret != CS_SUCCESS) {
 975                 last_fn = ParseTuple;
 976                 goto cs_failed;
 977         }
 978         link->conf.ConfigBase = parse.config.base;
 979         link->conf.Present = parse.config.rmask[0];
 980
 981         /* Configure card */
 982         link->state |= DEV_CONFIG;
 983         i = pcmcia_get_configuration_info(handle, &config);
 984         link->conf.Vcc = config.Vcc;
 985
 986         link->conf.ConfigIndex = 0x20;
 987         link->io.NumPorts1 = 64;
 988         link->io.IOAddrLines = 6;
 989
 990         for (n = 0; n < 0x400; n += 0x40) {
 991                 link->io.BasePort1 = n ^ 0x300;
 992                 i = pcmcia_request_io(link->handle, &link->io);
 993                 if (i == CS_SUCCESS)
 994                         break;
 995         }
 996
 997         if (i != CS_SUCCESS) {
 998                 cs_error(link->handle, RequestIO, i);
 999                 goto failed;
1000         }
1001
1002         i = pcmcia_request_irq(link->handle, &link->irq);
1003         if (i != CS_SUCCESS) {
1004                 cs_error(link->handle, RequestIRQ, i);
1005                 link->irq.AssignedIRQ = 0;
1006         }
1007
1008         i = pcmcia_request_configuration(link->handle, &link->conf);
1009         if (i != CS_SUCCESS) {
1010                 cs_error(link->handle, RequestConfiguration, i);
1011                 goto failed;
1012         }
1013
1014         if (bluecard_open(info) != 0)
1015                 goto failed;
1016
1017         strcpy(info->node.dev_name, info->hdev->name);
1018         link->dev = &info->node;
1019         link->state &= ~DEV_CONFIG_PENDING;
1020
1021         return;
1022
1023 cs_failed:
1024         cs_error(link->handle, last_fn, last_ret);
1025
1026 failed:
1027         bluecard_release(link);
1028 }
1029
1030
1031 static void bluecard_release(dev_link_t *link)
1032 {
1033         bluecard_info_t *info = link->priv;
1034
1035         if (link->state & DEV_PRESENT)
1036                 bluecard_close(info);
1037
1038         del_timer(&(info->timer));
1039
1040         link->dev = NULL;
1041
1042         pcmcia_release_configuration(link->handle);
1043         pcmcia_release_io(link->handle, &link->io);
1044         pcmcia_release_irq(link->handle, &link->irq);
1045
1046         link->state &= ~DEV_CONFIG;
1047 }
1048
1049
1050 static int bluecard_event(event_t event, int priority, event_callback_args_t *args)
1051 {
1052         dev_link_t *link = args->client_data;
1053         bluecard_info_t *info = link->priv;
1054
1055         switch (event) {
1056         case CS_EVENT_CARD_REMOVAL:
1057                 link->state &= ~DEV_PRESENT;
1058                 if (link->state & DEV_CONFIG) {
1059                         bluecard_close(info);
1060                         bluecard_release(link);
1061                 }
1062                 break;
1063         case CS_EVENT_CARD_INSERTION:
1064                 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
1065                 bluecard_config(link);
1066                 break;
1067         case CS_EVENT_PM_SUSPEND:
1068                 link->state |= DEV_SUSPEND;
1069                 /* Fall through... */
1070         case CS_EVENT_RESET_PHYSICAL:
1071                 if (link->state & DEV_CONFIG)
1072                         pcmcia_release_configuration(link->handle);
1073                 break;
1074         case CS_EVENT_PM_RESUME:
1075                 link->state &= ~DEV_SUSPEND;
1076                 /* Fall through... */
1077         case CS_EVENT_CARD_RESET:
1078                 if (DEV_OK(link))
1079                         pcmcia_request_configuration(link->handle, &link->conf);
1080                 break;
1081         }
1082
1083         return 0;
1084 }
1085
1086 static struct pcmcia_device_id bluecard_ids[] = {
1087         PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e),
1088         PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c),
1089         PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab),
1090         PCMCIA_DEVICE_NULL
1091 };
1092 MODULE_DEVICE_TABLE(pcmcia, bluecard_ids);
1093
1094 static struct pcmcia_driver bluecard_driver = {
1095         .owner          = THIS_MODULE,
1096         .drv            = {
1097                 .name   = "bluecard_cs",
1098         },
1099         .attach         = bluecard_attach,
1100         .event          = bluecard_event,
1101         .detach         = bluecard_detach,
1102         .id_table       = bluecard_ids,
1103 };
1104
1105 static int __init init_bluecard_cs(void)
1106 {
1107         return pcmcia_register_driver(&bluecard_driver);
1108 }
1109
1110
1111 static void __exit exit_bluecard_cs(void)
1112 {
1113         pcmcia_unregister_driver(&bluecard_driver);
1114         BUG_ON(dev_list != NULL);
1115 }
1116
1117 module_init(init_bluecard_cs);
1118 module_exit(exit_bluecard_cs);