Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * |
| 3 | * A driver for Nokia Connectivity Card DTL-1 devices |
| 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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | #include <linux/module.h> |
| 24 | |
| 25 | #include <linux/kernel.h> |
| 26 | #include <linux/init.h> |
| 27 | #include <linux/slab.h> |
| 28 | #include <linux/types.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | #include <linux/delay.h> |
| 30 | #include <linux/errno.h> |
| 31 | #include <linux/ptrace.h> |
| 32 | #include <linux/ioport.h> |
| 33 | #include <linux/spinlock.h> |
| 34 | #include <linux/moduleparam.h> |
| 35 | |
| 36 | #include <linux/skbuff.h> |
| 37 | #include <linux/string.h> |
| 38 | #include <linux/serial.h> |
| 39 | #include <linux/serial_reg.h> |
| 40 | #include <linux/bitops.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | #include <asm/io.h> |
| 42 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | #include <pcmcia/cistpl.h> |
| 44 | #include <pcmcia/ciscode.h> |
| 45 | #include <pcmcia/ds.h> |
| 46 | #include <pcmcia/cisreg.h> |
| 47 | |
| 48 | #include <net/bluetooth/bluetooth.h> |
| 49 | #include <net/bluetooth/hci_core.h> |
| 50 | |
| 51 | |
| 52 | |
| 53 | /* ======================== Module parameters ======================== */ |
| 54 | |
| 55 | |
| 56 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); |
| 57 | MODULE_DESCRIPTION("Bluetooth driver for Nokia Connectivity Card DTL-1"); |
| 58 | MODULE_LICENSE("GPL"); |
| 59 | |
| 60 | |
| 61 | |
| 62 | /* ======================== Local structures ======================== */ |
| 63 | |
| 64 | |
Himangi Saraogi | 66f4e0e | 2014-08-13 14:52:27 +0530 | [diff] [blame] | 65 | struct dtl1_info { |
Dominik Brodowski | fd23823 | 2006-03-05 10:45:09 +0100 | [diff] [blame] | 66 | struct pcmcia_device *p_dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | |
| 68 | struct hci_dev *hdev; |
| 69 | |
| 70 | spinlock_t lock; /* For serializing operations */ |
| 71 | |
| 72 | unsigned long flowmask; /* HCI flow mask */ |
| 73 | int ri_latch; |
| 74 | |
| 75 | struct sk_buff_head txq; |
| 76 | unsigned long tx_state; |
| 77 | |
| 78 | unsigned long rx_state; |
| 79 | unsigned long rx_count; |
| 80 | struct sk_buff *rx_skb; |
Himangi Saraogi | 66f4e0e | 2014-08-13 14:52:27 +0530 | [diff] [blame] | 81 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | |
| 83 | |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 84 | static int dtl1_config(struct pcmcia_device *link); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | |
| 87 | /* Transmit states */ |
| 88 | #define XMIT_SENDING 1 |
| 89 | #define XMIT_WAKEUP 2 |
| 90 | #define XMIT_WAITING 8 |
| 91 | |
| 92 | /* Receiver States */ |
| 93 | #define RECV_WAIT_NSH 0 |
| 94 | #define RECV_WAIT_DATA 1 |
| 95 | |
| 96 | |
Himangi Saraogi | 66f4e0e | 2014-08-13 14:52:27 +0530 | [diff] [blame] | 97 | struct nsh { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 98 | u8 type; |
| 99 | u8 zero; |
| 100 | u16 len; |
Himangi Saraogi | 66f4e0e | 2014-08-13 14:52:27 +0530 | [diff] [blame] | 101 | } __packed; /* Nokia Specific Header */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | |
| 103 | #define NSHL 4 /* Nokia Specific Header Length */ |
| 104 | |
| 105 | |
| 106 | |
| 107 | /* ======================== Interrupt handling ======================== */ |
| 108 | |
| 109 | |
| 110 | static int dtl1_write(unsigned int iobase, int fifo_size, __u8 *buf, int len) |
| 111 | { |
| 112 | int actual = 0; |
| 113 | |
| 114 | /* Tx FIFO should be empty */ |
| 115 | if (!(inb(iobase + UART_LSR) & UART_LSR_THRE)) |
| 116 | return 0; |
| 117 | |
| 118 | /* Fill FIFO with current frame */ |
| 119 | while ((fifo_size-- > 0) && (actual < len)) { |
| 120 | /* Transmit next byte */ |
| 121 | outb(buf[actual], iobase + UART_TX); |
| 122 | actual++; |
| 123 | } |
| 124 | |
| 125 | return actual; |
| 126 | } |
| 127 | |
| 128 | |
Himangi Saraogi | 66f4e0e | 2014-08-13 14:52:27 +0530 | [diff] [blame] | 129 | static void dtl1_write_wakeup(struct dtl1_info *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | { |
| 131 | if (!info) { |
| 132 | BT_ERR("Unknown device"); |
| 133 | return; |
| 134 | } |
| 135 | |
| 136 | if (test_bit(XMIT_WAITING, &(info->tx_state))) { |
| 137 | set_bit(XMIT_WAKEUP, &(info->tx_state)); |
| 138 | return; |
| 139 | } |
| 140 | |
| 141 | if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) { |
| 142 | set_bit(XMIT_WAKEUP, &(info->tx_state)); |
| 143 | return; |
| 144 | } |
| 145 | |
| 146 | do { |
Gustavo Padovan | fc5fef6 | 2012-05-23 04:04:19 -0300 | [diff] [blame] | 147 | unsigned int iobase = info->p_dev->resource[0]->start; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | register struct sk_buff *skb; |
Gustavo Padovan | fc5fef6 | 2012-05-23 04:04:19 -0300 | [diff] [blame] | 149 | int len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | |
| 151 | clear_bit(XMIT_WAKEUP, &(info->tx_state)); |
| 152 | |
Dominik Brodowski | e2d4096 | 2006-03-02 00:09:29 +0100 | [diff] [blame] | 153 | if (!pcmcia_dev_present(info->p_dev)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | return; |
| 155 | |
Valentin Ilie | a08b15e | 2013-08-12 18:46:00 +0300 | [diff] [blame] | 156 | skb = skb_dequeue(&(info->txq)); |
| 157 | if (!skb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | break; |
| 159 | |
| 160 | /* Send frame */ |
| 161 | len = dtl1_write(iobase, 32, skb->data, skb->len); |
| 162 | |
| 163 | if (len == skb->len) { |
| 164 | set_bit(XMIT_WAITING, &(info->tx_state)); |
| 165 | kfree_skb(skb); |
| 166 | } else { |
| 167 | skb_pull(skb, len); |
| 168 | skb_queue_head(&(info->txq), skb); |
| 169 | } |
| 170 | |
| 171 | info->hdev->stat.byte_tx += len; |
| 172 | |
| 173 | } while (test_bit(XMIT_WAKEUP, &(info->tx_state))); |
| 174 | |
| 175 | clear_bit(XMIT_SENDING, &(info->tx_state)); |
| 176 | } |
| 177 | |
| 178 | |
Himangi Saraogi | 66f4e0e | 2014-08-13 14:52:27 +0530 | [diff] [blame] | 179 | static void dtl1_control(struct dtl1_info *info, struct sk_buff *skb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | { |
| 181 | u8 flowmask = *(u8 *)skb->data; |
| 182 | int i; |
| 183 | |
| 184 | printk(KERN_INFO "Bluetooth: Nokia control data ="); |
Prasanna Karthik | fac5e5b | 2015-06-19 08:46:15 +0000 | [diff] [blame] | 185 | for (i = 0; i < skb->len; i++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | printk(" %02x", skb->data[i]); |
Prasanna Karthik | fac5e5b | 2015-06-19 08:46:15 +0000 | [diff] [blame] | 187 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 188 | printk("\n"); |
| 189 | |
| 190 | /* transition to active state */ |
| 191 | if (((info->flowmask & 0x07) == 0) && ((flowmask & 0x07) != 0)) { |
| 192 | clear_bit(XMIT_WAITING, &(info->tx_state)); |
| 193 | dtl1_write_wakeup(info); |
| 194 | } |
| 195 | |
| 196 | info->flowmask = flowmask; |
| 197 | |
| 198 | kfree_skb(skb); |
| 199 | } |
| 200 | |
| 201 | |
Himangi Saraogi | 66f4e0e | 2014-08-13 14:52:27 +0530 | [diff] [blame] | 202 | static void dtl1_receive(struct dtl1_info *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 203 | { |
| 204 | unsigned int iobase; |
Himangi Saraogi | 66f4e0e | 2014-08-13 14:52:27 +0530 | [diff] [blame] | 205 | struct nsh *nsh; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | int boguscount = 0; |
| 207 | |
| 208 | if (!info) { |
| 209 | BT_ERR("Unknown device"); |
| 210 | return; |
| 211 | } |
| 212 | |
Dominik Brodowski | 9a017a9 | 2010-07-24 15:58:54 +0200 | [diff] [blame] | 213 | iobase = info->p_dev->resource[0]->start; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | |
| 215 | do { |
| 216 | info->hdev->stat.byte_rx++; |
| 217 | |
| 218 | /* Allocate packet */ |
Valentin Ilie | a08b15e | 2013-08-12 18:46:00 +0300 | [diff] [blame] | 219 | if (info->rx_skb == NULL) { |
| 220 | info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC); |
| 221 | if (!info->rx_skb) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | BT_ERR("Can't allocate mem for new packet"); |
| 223 | info->rx_state = RECV_WAIT_NSH; |
| 224 | info->rx_count = NSHL; |
| 225 | return; |
| 226 | } |
Valentin Ilie | a08b15e | 2013-08-12 18:46:00 +0300 | [diff] [blame] | 227 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 228 | |
| 229 | *skb_put(info->rx_skb, 1) = inb(iobase + UART_RX); |
Himangi Saraogi | 66f4e0e | 2014-08-13 14:52:27 +0530 | [diff] [blame] | 230 | nsh = (struct nsh *)info->rx_skb->data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | |
| 232 | info->rx_count--; |
| 233 | |
| 234 | if (info->rx_count == 0) { |
| 235 | |
| 236 | switch (info->rx_state) { |
| 237 | case RECV_WAIT_NSH: |
| 238 | info->rx_state = RECV_WAIT_DATA; |
| 239 | info->rx_count = nsh->len + (nsh->len & 0x0001); |
| 240 | break; |
| 241 | case RECV_WAIT_DATA: |
Marcel Holtmann | 618e8bc | 2015-11-05 07:33:56 +0100 | [diff] [blame] | 242 | hci_skb_pkt_type(info->rx_skb) = nsh->type; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | |
| 244 | /* remove PAD byte if it exists */ |
| 245 | if (nsh->len & 0x0001) { |
| 246 | info->rx_skb->tail--; |
| 247 | info->rx_skb->len--; |
| 248 | } |
| 249 | |
| 250 | /* remove NSH */ |
| 251 | skb_pull(info->rx_skb, NSHL); |
| 252 | |
Marcel Holtmann | 618e8bc | 2015-11-05 07:33:56 +0100 | [diff] [blame] | 253 | switch (hci_skb_pkt_type(info->rx_skb)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | case 0x80: |
| 255 | /* control data for the Nokia Card */ |
| 256 | dtl1_control(info, info->rx_skb); |
| 257 | break; |
| 258 | case 0x82: |
| 259 | case 0x83: |
| 260 | case 0x84: |
| 261 | /* send frame to the HCI layer */ |
Marcel Holtmann | 618e8bc | 2015-11-05 07:33:56 +0100 | [diff] [blame] | 262 | hci_skb_pkt_type(info->rx_skb) &= 0x0f; |
Marcel Holtmann | e1a2617 | 2013-10-10 16:52:43 -0700 | [diff] [blame] | 263 | hci_recv_frame(info->hdev, info->rx_skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 264 | break; |
| 265 | default: |
| 266 | /* unknown packet */ |
Marcel Holtmann | 618e8bc | 2015-11-05 07:33:56 +0100 | [diff] [blame] | 267 | BT_ERR("Unknown HCI packet with type 0x%02x received", |
| 268 | hci_skb_pkt_type(info->rx_skb)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | kfree_skb(info->rx_skb); |
| 270 | break; |
| 271 | } |
| 272 | |
| 273 | info->rx_state = RECV_WAIT_NSH; |
| 274 | info->rx_count = NSHL; |
| 275 | info->rx_skb = NULL; |
| 276 | break; |
| 277 | } |
| 278 | |
| 279 | } |
| 280 | |
| 281 | /* Make sure we don't stay here too long */ |
| 282 | if (boguscount++ > 32) |
| 283 | break; |
| 284 | |
| 285 | } while (inb(iobase + UART_LSR) & UART_LSR_DR); |
| 286 | } |
| 287 | |
| 288 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 289 | static irqreturn_t dtl1_interrupt(int irq, void *dev_inst) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | { |
Himangi Saraogi | 66f4e0e | 2014-08-13 14:52:27 +0530 | [diff] [blame] | 291 | struct dtl1_info *info = dev_inst; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | unsigned int iobase; |
| 293 | unsigned char msr; |
| 294 | int boguscount = 0; |
| 295 | int iir, lsr; |
Alan Cox | aafcf99 | 2008-10-05 17:35:41 +0100 | [diff] [blame] | 296 | irqreturn_t r = IRQ_NONE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | |
Mike Frysinger | 7427847 | 2009-09-14 13:43:49 -0400 | [diff] [blame] | 298 | if (!info || !info->hdev) |
| 299 | /* our irq handler is shared */ |
| 300 | return IRQ_NONE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | |
Dominik Brodowski | 9a017a9 | 2010-07-24 15:58:54 +0200 | [diff] [blame] | 302 | iobase = info->p_dev->resource[0]->start; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | |
| 304 | spin_lock(&(info->lock)); |
| 305 | |
| 306 | iir = inb(iobase + UART_IIR) & UART_IIR_ID; |
| 307 | while (iir) { |
| 308 | |
Alan Cox | aafcf99 | 2008-10-05 17:35:41 +0100 | [diff] [blame] | 309 | r = IRQ_HANDLED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | /* Clear interrupt */ |
| 311 | lsr = inb(iobase + UART_LSR); |
| 312 | |
| 313 | switch (iir) { |
| 314 | case UART_IIR_RLSI: |
| 315 | BT_ERR("RLSI"); |
| 316 | break; |
| 317 | case UART_IIR_RDI: |
| 318 | /* Receive interrupt */ |
| 319 | dtl1_receive(info); |
| 320 | break; |
| 321 | case UART_IIR_THRI: |
| 322 | if (lsr & UART_LSR_THRE) { |
| 323 | /* Transmitter ready for data */ |
| 324 | dtl1_write_wakeup(info); |
| 325 | } |
| 326 | break; |
| 327 | default: |
| 328 | BT_ERR("Unhandled IIR=%#x", iir); |
| 329 | break; |
| 330 | } |
| 331 | |
| 332 | /* Make sure we don't stay here too long */ |
| 333 | if (boguscount++ > 100) |
| 334 | break; |
| 335 | |
| 336 | iir = inb(iobase + UART_IIR) & UART_IIR_ID; |
| 337 | |
| 338 | } |
| 339 | |
| 340 | msr = inb(iobase + UART_MSR); |
| 341 | |
| 342 | if (info->ri_latch ^ (msr & UART_MSR_RI)) { |
| 343 | info->ri_latch = msr & UART_MSR_RI; |
| 344 | clear_bit(XMIT_WAITING, &(info->tx_state)); |
| 345 | dtl1_write_wakeup(info); |
Alan Cox | aafcf99 | 2008-10-05 17:35:41 +0100 | [diff] [blame] | 346 | r = IRQ_HANDLED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | } |
| 348 | |
| 349 | spin_unlock(&(info->lock)); |
| 350 | |
Alan Cox | aafcf99 | 2008-10-05 17:35:41 +0100 | [diff] [blame] | 351 | return r; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | } |
| 353 | |
| 354 | |
| 355 | |
| 356 | /* ======================== HCI interface ======================== */ |
| 357 | |
| 358 | |
| 359 | static int dtl1_hci_open(struct hci_dev *hdev) |
| 360 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | return 0; |
| 362 | } |
| 363 | |
| 364 | |
| 365 | static int dtl1_hci_flush(struct hci_dev *hdev) |
| 366 | { |
Himangi Saraogi | 66f4e0e | 2014-08-13 14:52:27 +0530 | [diff] [blame] | 367 | struct dtl1_info *info = hci_get_drvdata(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | |
| 369 | /* Drop TX queue */ |
| 370 | skb_queue_purge(&(info->txq)); |
| 371 | |
| 372 | return 0; |
| 373 | } |
| 374 | |
| 375 | |
| 376 | static int dtl1_hci_close(struct hci_dev *hdev) |
| 377 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 378 | dtl1_hci_flush(hdev); |
| 379 | |
| 380 | return 0; |
| 381 | } |
| 382 | |
| 383 | |
Marcel Holtmann | 7bd8f09 | 2013-10-11 06:19:18 -0700 | [diff] [blame] | 384 | static int dtl1_hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | { |
Himangi Saraogi | 66f4e0e | 2014-08-13 14:52:27 +0530 | [diff] [blame] | 386 | struct dtl1_info *info = hci_get_drvdata(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | struct sk_buff *s; |
Himangi Saraogi | 66f4e0e | 2014-08-13 14:52:27 +0530 | [diff] [blame] | 388 | struct nsh nsh; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 389 | |
Marcel Holtmann | 618e8bc | 2015-11-05 07:33:56 +0100 | [diff] [blame] | 390 | switch (hci_skb_pkt_type(skb)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | case HCI_COMMAND_PKT: |
| 392 | hdev->stat.cmd_tx++; |
| 393 | nsh.type = 0x81; |
| 394 | break; |
| 395 | case HCI_ACLDATA_PKT: |
| 396 | hdev->stat.acl_tx++; |
| 397 | nsh.type = 0x82; |
| 398 | break; |
| 399 | case HCI_SCODATA_PKT: |
| 400 | hdev->stat.sco_tx++; |
| 401 | nsh.type = 0x83; |
| 402 | break; |
Marcel Holtmann | 3c4bdc4 | 2009-06-14 15:24:44 +0200 | [diff] [blame] | 403 | default: |
| 404 | return -EILSEQ; |
Prasanna Karthik | 20a7e25 | 2015-07-05 09:56:36 +0000 | [diff] [blame] | 405 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | |
| 407 | nsh.zero = 0; |
| 408 | nsh.len = skb->len; |
| 409 | |
| 410 | s = bt_skb_alloc(NSHL + skb->len + 1, GFP_ATOMIC); |
Jesper Juhl | 57136ca | 2006-06-26 00:24:33 -0700 | [diff] [blame] | 411 | if (!s) |
| 412 | return -ENOMEM; |
| 413 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 414 | skb_reserve(s, NSHL); |
Arnaldo Carvalho de Melo | d626f62 | 2007-03-27 18:55:52 -0300 | [diff] [blame] | 415 | skb_copy_from_linear_data(skb, skb_put(s, skb->len), skb->len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | if (skb->len & 0x0001) |
| 417 | *skb_put(s, 1) = 0; /* PAD */ |
| 418 | |
| 419 | /* Prepend skb with Nokia frame header and queue */ |
| 420 | memcpy(skb_push(s, NSHL), &nsh, NSHL); |
| 421 | skb_queue_tail(&(info->txq), s); |
| 422 | |
| 423 | dtl1_write_wakeup(info); |
| 424 | |
| 425 | kfree_skb(skb); |
| 426 | |
| 427 | return 0; |
| 428 | } |
| 429 | |
| 430 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 431 | |
| 432 | /* ======================== Card services HCI interaction ======================== */ |
| 433 | |
| 434 | |
Himangi Saraogi | 66f4e0e | 2014-08-13 14:52:27 +0530 | [diff] [blame] | 435 | static int dtl1_open(struct dtl1_info *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 436 | { |
| 437 | unsigned long flags; |
Dominik Brodowski | 9a017a9 | 2010-07-24 15:58:54 +0200 | [diff] [blame] | 438 | unsigned int iobase = info->p_dev->resource[0]->start; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | struct hci_dev *hdev; |
| 440 | |
| 441 | spin_lock_init(&(info->lock)); |
| 442 | |
| 443 | skb_queue_head_init(&(info->txq)); |
| 444 | |
| 445 | info->rx_state = RECV_WAIT_NSH; |
| 446 | info->rx_count = NSHL; |
| 447 | info->rx_skb = NULL; |
| 448 | |
| 449 | set_bit(XMIT_WAITING, &(info->tx_state)); |
| 450 | |
| 451 | /* Initialize HCI device */ |
| 452 | hdev = hci_alloc_dev(); |
| 453 | if (!hdev) { |
| 454 | BT_ERR("Can't allocate HCI device"); |
| 455 | return -ENOMEM; |
| 456 | } |
| 457 | |
| 458 | info->hdev = hdev; |
| 459 | |
Marcel Holtmann | c13854c | 2010-02-08 15:27:07 +0100 | [diff] [blame] | 460 | hdev->bus = HCI_PCCARD; |
David Herrmann | 155961e | 2012-02-09 21:58:32 +0100 | [diff] [blame] | 461 | hci_set_drvdata(hdev, info); |
Marcel Holtmann | 27d3528 | 2006-07-03 10:02:37 +0200 | [diff] [blame] | 462 | SET_HCIDEV_DEV(hdev, &info->p_dev->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 463 | |
Marcel Holtmann | 3c72884 | 2013-10-10 10:50:04 -0700 | [diff] [blame] | 464 | hdev->open = dtl1_hci_open; |
| 465 | hdev->close = dtl1_hci_close; |
| 466 | hdev->flush = dtl1_hci_flush; |
| 467 | hdev->send = dtl1_hci_send_frame; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 468 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | spin_lock_irqsave(&(info->lock), flags); |
| 470 | |
| 471 | /* Reset UART */ |
| 472 | outb(0, iobase + UART_MCR); |
| 473 | |
| 474 | /* Turn off interrupts */ |
| 475 | outb(0, iobase + UART_IER); |
| 476 | |
| 477 | /* Initialize UART */ |
| 478 | outb(UART_LCR_WLEN8, iobase + UART_LCR); /* Reset DLAB */ |
| 479 | outb((UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2), iobase + UART_MCR); |
| 480 | |
Dominik Brodowski | 9a017a9 | 2010-07-24 15:58:54 +0200 | [diff] [blame] | 481 | info->ri_latch = inb(info->p_dev->resource[0]->start + UART_MSR) |
| 482 | & UART_MSR_RI; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | |
| 484 | /* Turn on interrupts */ |
| 485 | outb(UART_IER_RLSI | UART_IER_RDI | UART_IER_THRI, iobase + UART_IER); |
| 486 | |
| 487 | spin_unlock_irqrestore(&(info->lock), flags); |
| 488 | |
| 489 | /* Timeout before it is safe to send the first HCI packet */ |
| 490 | msleep(2000); |
| 491 | |
| 492 | /* Register HCI device */ |
| 493 | if (hci_register_dev(hdev) < 0) { |
| 494 | BT_ERR("Can't register HCI device"); |
| 495 | info->hdev = NULL; |
| 496 | hci_free_dev(hdev); |
| 497 | return -ENODEV; |
| 498 | } |
| 499 | |
| 500 | return 0; |
| 501 | } |
| 502 | |
| 503 | |
Himangi Saraogi | 66f4e0e | 2014-08-13 14:52:27 +0530 | [diff] [blame] | 504 | static int dtl1_close(struct dtl1_info *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 505 | { |
| 506 | unsigned long flags; |
Dominik Brodowski | 9a017a9 | 2010-07-24 15:58:54 +0200 | [diff] [blame] | 507 | unsigned int iobase = info->p_dev->resource[0]->start; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 508 | struct hci_dev *hdev = info->hdev; |
| 509 | |
| 510 | if (!hdev) |
| 511 | return -ENODEV; |
| 512 | |
| 513 | dtl1_hci_close(hdev); |
| 514 | |
| 515 | spin_lock_irqsave(&(info->lock), flags); |
| 516 | |
| 517 | /* Reset UART */ |
| 518 | outb(0, iobase + UART_MCR); |
| 519 | |
| 520 | /* Turn off interrupts */ |
| 521 | outb(0, iobase + UART_IER); |
| 522 | |
| 523 | spin_unlock_irqrestore(&(info->lock), flags); |
| 524 | |
David Herrmann | 13ea401 | 2011-10-26 10:43:18 +0200 | [diff] [blame] | 525 | hci_unregister_dev(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | hci_free_dev(hdev); |
| 527 | |
| 528 | return 0; |
| 529 | } |
| 530 | |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 531 | static int dtl1_probe(struct pcmcia_device *link) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 532 | { |
Himangi Saraogi | 66f4e0e | 2014-08-13 14:52:27 +0530 | [diff] [blame] | 533 | struct dtl1_info *info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 534 | |
| 535 | /* Create new info device */ |
Sachin Kamat | cd7cf78 | 2012-07-27 12:38:41 +0530 | [diff] [blame] | 536 | info = devm_kzalloc(&link->dev, sizeof(*info), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 537 | if (!info) |
Dominik Brodowski | f8cfa61 | 2005-11-14 21:25:51 +0100 | [diff] [blame] | 538 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 539 | |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 540 | info->p_dev = link; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 541 | link->priv = info; |
| 542 | |
Dominik Brodowski | 00990e7 | 2010-07-30 13:13:46 +0200 | [diff] [blame] | 543 | link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 544 | |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 545 | return dtl1_config(link); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 546 | } |
| 547 | |
| 548 | |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 549 | static void dtl1_detach(struct pcmcia_device *link) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 550 | { |
Himangi Saraogi | 66f4e0e | 2014-08-13 14:52:27 +0530 | [diff] [blame] | 551 | struct dtl1_info *info = link->priv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 552 | |
David Herrmann | 5a0b815 | 2012-01-07 15:19:41 +0100 | [diff] [blame] | 553 | dtl1_close(info); |
| 554 | pcmcia_disable_device(link); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 555 | } |
| 556 | |
Dominik Brodowski | 00990e7 | 2010-07-30 13:13:46 +0200 | [diff] [blame] | 557 | static int dtl1_confcheck(struct pcmcia_device *p_dev, void *priv_data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | { |
Dominik Brodowski | 00990e7 | 2010-07-30 13:13:46 +0200 | [diff] [blame] | 559 | if ((p_dev->resource[1]->end) || (p_dev->resource[1]->end < 8)) |
Dominik Brodowski | 90abdc3 | 2010-07-24 17:23:51 +0200 | [diff] [blame] | 560 | return -ENODEV; |
| 561 | |
Dominik Brodowski | 00990e7 | 2010-07-30 13:13:46 +0200 | [diff] [blame] | 562 | p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; |
| 563 | p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; |
| 564 | |
Dominik Brodowski | 90abdc3 | 2010-07-24 17:23:51 +0200 | [diff] [blame] | 565 | return pcmcia_request_io(p_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | } |
| 567 | |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 568 | static int dtl1_config(struct pcmcia_device *link) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 569 | { |
Himangi Saraogi | 66f4e0e | 2014-08-13 14:52:27 +0530 | [diff] [blame] | 570 | struct dtl1_info *info = link->priv; |
Devendra Naga | 46afede | 2012-06-19 21:51:31 +0530 | [diff] [blame] | 571 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 572 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 573 | /* Look for a generic full-sized window */ |
Dominik Brodowski | 90abdc3 | 2010-07-24 17:23:51 +0200 | [diff] [blame] | 574 | link->resource[0]->end = 8; |
Devendra Naga | 46afede | 2012-06-19 21:51:31 +0530 | [diff] [blame] | 575 | ret = pcmcia_loop_config(link, dtl1_confcheck, NULL); |
| 576 | if (ret) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 577 | goto failed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 578 | |
Devendra Naga | 46afede | 2012-06-19 21:51:31 +0530 | [diff] [blame] | 579 | ret = pcmcia_request_irq(link, dtl1_interrupt); |
| 580 | if (ret) |
Dominik Brodowski | eb14120 | 2010-03-07 12:21:16 +0100 | [diff] [blame] | 581 | goto failed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 582 | |
Devendra Naga | 46afede | 2012-06-19 21:51:31 +0530 | [diff] [blame] | 583 | ret = pcmcia_enable_device(link); |
| 584 | if (ret) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 585 | goto failed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 586 | |
Devendra Naga | 46afede | 2012-06-19 21:51:31 +0530 | [diff] [blame] | 587 | ret = dtl1_open(info); |
| 588 | if (ret) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 589 | goto failed; |
| 590 | |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 591 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 592 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 593 | failed: |
David Herrmann | 5a0b815 | 2012-01-07 15:19:41 +0100 | [diff] [blame] | 594 | dtl1_detach(link); |
Devendra Naga | 46afede | 2012-06-19 21:51:31 +0530 | [diff] [blame] | 595 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | } |
| 597 | |
Joe Perches | 25f8f54 | 2011-05-03 19:29:01 -0700 | [diff] [blame] | 598 | static const struct pcmcia_device_id dtl1_ids[] = { |
Dominik Brodowski | 88eca2e | 2005-06-27 16:28:39 -0700 | [diff] [blame] | 599 | PCMCIA_DEVICE_PROD_ID12("Nokia Mobile Phones", "DTL-1", 0xe1bfdd64, 0xe168480d), |
Marcel Holtmann | 8602b4f | 2006-10-20 08:55:34 +0200 | [diff] [blame] | 600 | PCMCIA_DEVICE_PROD_ID12("Nokia Mobile Phones", "DTL-4", 0xe1bfdd64, 0x9102bc82), |
Dominik Brodowski | 88eca2e | 2005-06-27 16:28:39 -0700 | [diff] [blame] | 601 | PCMCIA_DEVICE_PROD_ID12("Socket", "CF", 0xb38bcc2e, 0x44ebf863), |
Richard Purdie | 725a6ab | 2006-01-05 09:56:03 +0000 | [diff] [blame] | 602 | PCMCIA_DEVICE_PROD_ID12("Socket", "CF+ Personal Network Card", 0xb38bcc2e, 0xe732bae3), |
Dominik Brodowski | 88eca2e | 2005-06-27 16:28:39 -0700 | [diff] [blame] | 603 | PCMCIA_DEVICE_NULL |
| 604 | }; |
| 605 | MODULE_DEVICE_TABLE(pcmcia, dtl1_ids); |
| 606 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 607 | static struct pcmcia_driver dtl1_driver = { |
| 608 | .owner = THIS_MODULE, |
Dominik Brodowski | 2e9b981 | 2010-08-08 11:36:26 +0200 | [diff] [blame] | 609 | .name = "dtl1_cs", |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 610 | .probe = dtl1_probe, |
Dominik Brodowski | cc3b486 | 2005-11-14 21:23:14 +0100 | [diff] [blame] | 611 | .remove = dtl1_detach, |
Dominik Brodowski | 88eca2e | 2005-06-27 16:28:39 -0700 | [diff] [blame] | 612 | .id_table = dtl1_ids, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 613 | }; |
H Hartley Sweeten | e0c005f | 2013-03-06 11:26:24 -0700 | [diff] [blame] | 614 | module_pcmcia_driver(dtl1_driver); |