Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * |
| 3 | * Driver for Option High Speed Mobile Devices. |
| 4 | * |
| 5 | * Copyright (C) 2008 Option International |
Denis Joseph Barrow | 11cd29b | 2009-01-02 13:50:36 +0000 | [diff] [blame] | 6 | * Filip Aben <f.aben@option.com> |
| 7 | * Denis Joseph Barrow <d.barow@option.com> |
Jan Dumon | 3b7d2b3 | 2009-04-01 22:57:20 +0000 | [diff] [blame] | 8 | * Jan Dumon <j.dumon@option.com> |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 9 | * Copyright (C) 2007 Andrew Bird (Sphere Systems Ltd) |
| 10 | * <ajb@spheresystems.co.uk> |
| 11 | * Copyright (C) 2008 Greg Kroah-Hartman <gregkh@suse.de> |
| 12 | * Copyright (C) 2008 Novell, Inc. |
| 13 | * |
| 14 | * This program is free software; you can redistribute it and/or modify |
| 15 | * it under the terms of the GNU General Public License version 2 as |
| 16 | * published by the Free Software Foundation. |
| 17 | * |
| 18 | * This program is distributed in the hope that it will be useful, |
| 19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 21 | * GNU General Public License for more details. |
| 22 | * |
| 23 | * You should have received a copy of the GNU General Public License |
| 24 | * along with this program; if not, write to the Free Software |
| 25 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, |
| 26 | * USA |
| 27 | * |
| 28 | * |
| 29 | *****************************************************************************/ |
| 30 | |
| 31 | /****************************************************************************** |
| 32 | * |
| 33 | * Description of the device: |
| 34 | * |
| 35 | * Interface 0: Contains the IP network interface on the bulk end points. |
| 36 | * The multiplexed serial ports are using the interrupt and |
| 37 | * control endpoints. |
| 38 | * Interrupt contains a bitmap telling which multiplexed |
| 39 | * serialport needs servicing. |
| 40 | * |
| 41 | * Interface 1: Diagnostics port, uses bulk only, do not submit urbs until the |
| 42 | * port is opened, as this have a huge impact on the network port |
| 43 | * throughput. |
| 44 | * |
Denis Joseph Barrow | 542f548 | 2009-01-02 13:47:52 +0000 | [diff] [blame] | 45 | * Interface 2: Standard modem interface - circuit switched interface, this |
| 46 | * can be used to make a standard ppp connection however it |
| 47 | * should not be used in conjunction with the IP network interface |
| 48 | * enabled for USB performance reasons i.e. if using this set |
| 49 | * ideally disable_net=1. |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 50 | * |
| 51 | *****************************************************************************/ |
| 52 | |
| 53 | #include <linux/sched.h> |
| 54 | #include <linux/slab.h> |
| 55 | #include <linux/init.h> |
| 56 | #include <linux/delay.h> |
| 57 | #include <linux/netdevice.h> |
| 58 | #include <linux/module.h> |
| 59 | #include <linux/ethtool.h> |
| 60 | #include <linux/usb.h> |
| 61 | #include <linux/timer.h> |
| 62 | #include <linux/tty.h> |
| 63 | #include <linux/tty_driver.h> |
| 64 | #include <linux/tty_flip.h> |
| 65 | #include <linux/kmod.h> |
| 66 | #include <linux/rfkill.h> |
| 67 | #include <linux/ip.h> |
| 68 | #include <linux/uaccess.h> |
| 69 | #include <linux/usb/cdc.h> |
| 70 | #include <net/arp.h> |
| 71 | #include <asm/byteorder.h> |
Denis Joseph Barrow | 542f548 | 2009-01-02 13:47:52 +0000 | [diff] [blame] | 72 | #include <linux/serial_core.h> |
| 73 | #include <linux/serial.h> |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 74 | |
| 75 | |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 76 | #define MOD_AUTHOR "Option Wireless" |
| 77 | #define MOD_DESCRIPTION "USB High Speed Option driver" |
| 78 | #define MOD_LICENSE "GPL" |
| 79 | |
| 80 | #define HSO_MAX_NET_DEVICES 10 |
| 81 | #define HSO__MAX_MTU 2048 |
| 82 | #define DEFAULT_MTU 1500 |
| 83 | #define DEFAULT_MRU 1500 |
| 84 | |
| 85 | #define CTRL_URB_RX_SIZE 1024 |
| 86 | #define CTRL_URB_TX_SIZE 64 |
| 87 | |
| 88 | #define BULK_URB_RX_SIZE 4096 |
| 89 | #define BULK_URB_TX_SIZE 8192 |
| 90 | |
| 91 | #define MUX_BULK_RX_BUF_SIZE HSO__MAX_MTU |
| 92 | #define MUX_BULK_TX_BUF_SIZE HSO__MAX_MTU |
| 93 | #define MUX_BULK_RX_BUF_COUNT 4 |
| 94 | #define USB_TYPE_OPTION_VENDOR 0x20 |
| 95 | |
| 96 | /* These definitions are used with the struct hso_net flags element */ |
| 97 | /* - use *_bit operations on it. (bit indices not values.) */ |
| 98 | #define HSO_NET_RUNNING 0 |
| 99 | |
| 100 | #define HSO_NET_TX_TIMEOUT (HZ*10) |
| 101 | |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 102 | #define HSO_SERIAL_MAGIC 0x48534f31 |
| 103 | |
| 104 | /* Number of ttys to handle */ |
| 105 | #define HSO_SERIAL_TTY_MINORS 256 |
| 106 | |
| 107 | #define MAX_RX_URBS 2 |
| 108 | |
Greg Kroah-Hartman | 0235f64 | 2008-08-08 12:02:57 -0700 | [diff] [blame] | 109 | static inline struct hso_serial *get_serial_by_tty(struct tty_struct *tty) |
| 110 | { |
| 111 | if (tty) |
| 112 | return tty->driver_data; |
| 113 | return NULL; |
| 114 | } |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 115 | |
| 116 | /*****************************************************************************/ |
| 117 | /* Debugging functions */ |
| 118 | /*****************************************************************************/ |
| 119 | #define D__(lvl_, fmt, arg...) \ |
| 120 | do { \ |
| 121 | printk(lvl_ "[%d:%s]: " fmt "\n", \ |
| 122 | __LINE__, __func__, ## arg); \ |
| 123 | } while (0) |
| 124 | |
| 125 | #define D_(lvl, args...) \ |
| 126 | do { \ |
| 127 | if (lvl & debug) \ |
| 128 | D__(KERN_INFO, args); \ |
| 129 | } while (0) |
| 130 | |
| 131 | #define D1(args...) D_(0x01, ##args) |
| 132 | #define D2(args...) D_(0x02, ##args) |
| 133 | #define D3(args...) D_(0x04, ##args) |
| 134 | #define D4(args...) D_(0x08, ##args) |
| 135 | #define D5(args...) D_(0x10, ##args) |
| 136 | |
| 137 | /*****************************************************************************/ |
| 138 | /* Enumerators */ |
| 139 | /*****************************************************************************/ |
| 140 | enum pkt_parse_state { |
| 141 | WAIT_IP, |
| 142 | WAIT_DATA, |
| 143 | WAIT_SYNC |
| 144 | }; |
| 145 | |
| 146 | /*****************************************************************************/ |
| 147 | /* Structs */ |
| 148 | /*****************************************************************************/ |
| 149 | |
| 150 | struct hso_shared_int { |
| 151 | struct usb_endpoint_descriptor *intr_endp; |
| 152 | void *shared_intr_buf; |
| 153 | struct urb *shared_intr_urb; |
| 154 | struct usb_device *usb; |
| 155 | int use_count; |
| 156 | int ref_count; |
| 157 | struct mutex shared_int_lock; |
| 158 | }; |
| 159 | |
| 160 | struct hso_net { |
| 161 | struct hso_device *parent; |
| 162 | struct net_device *net; |
| 163 | struct rfkill *rfkill; |
| 164 | |
| 165 | struct usb_endpoint_descriptor *in_endp; |
| 166 | struct usb_endpoint_descriptor *out_endp; |
| 167 | |
| 168 | struct urb *mux_bulk_rx_urb_pool[MUX_BULK_RX_BUF_COUNT]; |
| 169 | struct urb *mux_bulk_tx_urb; |
| 170 | void *mux_bulk_rx_buf_pool[MUX_BULK_RX_BUF_COUNT]; |
| 171 | void *mux_bulk_tx_buf; |
| 172 | |
| 173 | struct sk_buff *skb_rx_buf; |
| 174 | struct sk_buff *skb_tx_buf; |
| 175 | |
| 176 | enum pkt_parse_state rx_parse_state; |
| 177 | spinlock_t net_lock; |
| 178 | |
| 179 | unsigned short rx_buf_size; |
| 180 | unsigned short rx_buf_missing; |
| 181 | struct iphdr rx_ip_hdr; |
| 182 | |
| 183 | unsigned long flags; |
| 184 | }; |
| 185 | |
Denis Joseph Barrow | 8ef5ba6 | 2008-09-05 17:12:07 +0200 | [diff] [blame] | 186 | enum rx_ctrl_state{ |
| 187 | RX_IDLE, |
| 188 | RX_SENT, |
| 189 | RX_PENDING |
| 190 | }; |
| 191 | |
Denis Joseph Barrow | 542f548 | 2009-01-02 13:47:52 +0000 | [diff] [blame] | 192 | #define BM_REQUEST_TYPE (0xa1) |
| 193 | #define B_NOTIFICATION (0x20) |
| 194 | #define W_VALUE (0x0) |
| 195 | #define W_INDEX (0x2) |
| 196 | #define W_LENGTH (0x2) |
| 197 | |
| 198 | #define B_OVERRUN (0x1<<6) |
| 199 | #define B_PARITY (0x1<<5) |
| 200 | #define B_FRAMING (0x1<<4) |
| 201 | #define B_RING_SIGNAL (0x1<<3) |
| 202 | #define B_BREAK (0x1<<2) |
| 203 | #define B_TX_CARRIER (0x1<<1) |
| 204 | #define B_RX_CARRIER (0x1<<0) |
| 205 | |
| 206 | struct hso_serial_state_notification { |
| 207 | u8 bmRequestType; |
| 208 | u8 bNotification; |
| 209 | u16 wValue; |
| 210 | u16 wIndex; |
| 211 | u16 wLength; |
| 212 | u16 UART_state_bitmap; |
Eric Dumazet | ba2d358 | 2010-06-02 18:10:09 +0000 | [diff] [blame] | 213 | } __packed; |
Denis Joseph Barrow | 542f548 | 2009-01-02 13:47:52 +0000 | [diff] [blame] | 214 | |
| 215 | struct hso_tiocmget { |
| 216 | struct mutex mutex; |
| 217 | wait_queue_head_t waitq; |
| 218 | int intr_completed; |
| 219 | struct usb_endpoint_descriptor *endp; |
| 220 | struct urb *urb; |
| 221 | struct hso_serial_state_notification serial_state_notification; |
| 222 | u16 prev_UART_state_bitmap; |
| 223 | struct uart_icount icount; |
| 224 | }; |
| 225 | |
| 226 | |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 227 | struct hso_serial { |
| 228 | struct hso_device *parent; |
| 229 | int magic; |
| 230 | u8 minor; |
| 231 | |
| 232 | struct hso_shared_int *shared_int; |
| 233 | |
| 234 | /* rx/tx urb could be either a bulk urb or a control urb depending |
| 235 | on which serial port it is used on. */ |
| 236 | struct urb *rx_urb[MAX_RX_URBS]; |
| 237 | u8 num_rx_urbs; |
| 238 | u8 *rx_data[MAX_RX_URBS]; |
| 239 | u16 rx_data_length; /* should contain allocated length */ |
| 240 | |
| 241 | struct urb *tx_urb; |
| 242 | u8 *tx_data; |
| 243 | u8 *tx_buffer; |
| 244 | u16 tx_data_length; /* should contain allocated length */ |
| 245 | u16 tx_data_count; |
| 246 | u16 tx_buffer_count; |
| 247 | struct usb_ctrlrequest ctrl_req_tx; |
| 248 | struct usb_ctrlrequest ctrl_req_rx; |
| 249 | |
| 250 | struct usb_endpoint_descriptor *in_endp; |
| 251 | struct usb_endpoint_descriptor *out_endp; |
| 252 | |
Denis Joseph Barrow | 8ef5ba6 | 2008-09-05 17:12:07 +0200 | [diff] [blame] | 253 | enum rx_ctrl_state rx_state; |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 254 | u8 rts_state; |
| 255 | u8 dtr_state; |
| 256 | unsigned tx_urb_used:1; |
| 257 | |
| 258 | /* from usb_serial_port */ |
| 259 | struct tty_struct *tty; |
| 260 | int open_count; |
| 261 | spinlock_t serial_lock; |
| 262 | |
| 263 | int (*write_data) (struct hso_serial *serial); |
Denis Joseph Barrow | 542f548 | 2009-01-02 13:47:52 +0000 | [diff] [blame] | 264 | struct hso_tiocmget *tiocmget; |
Denis Joseph Barrow | 8ef5ba6 | 2008-09-05 17:12:07 +0200 | [diff] [blame] | 265 | /* Hacks required to get flow control |
| 266 | * working on the serial receive buffers |
| 267 | * so as not to drop characters on the floor. |
| 268 | */ |
| 269 | int curr_rx_urb_idx; |
| 270 | u16 curr_rx_urb_offset; |
| 271 | u8 rx_urb_filled[MAX_RX_URBS]; |
| 272 | struct tasklet_struct unthrottle_tasklet; |
| 273 | struct work_struct retry_unthrottle_workqueue; |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 274 | }; |
| 275 | |
| 276 | struct hso_device { |
| 277 | union { |
| 278 | struct hso_serial *dev_serial; |
| 279 | struct hso_net *dev_net; |
| 280 | } port_data; |
| 281 | |
| 282 | u32 port_spec; |
| 283 | |
| 284 | u8 is_active; |
| 285 | u8 usb_gone; |
| 286 | struct work_struct async_get_intf; |
| 287 | struct work_struct async_put_intf; |
Jan Dumon | 68a351c | 2010-01-05 04:52:13 +0000 | [diff] [blame] | 288 | struct work_struct reset_device; |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 289 | |
| 290 | struct usb_device *usb; |
| 291 | struct usb_interface *interface; |
| 292 | |
| 293 | struct device *dev; |
| 294 | struct kref ref; |
David S. Miller | ab153d8 | 2008-11-25 03:52:46 -0800 | [diff] [blame] | 295 | struct mutex mutex; |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 296 | }; |
| 297 | |
| 298 | /* Type of interface */ |
| 299 | #define HSO_INTF_MASK 0xFF00 |
| 300 | #define HSO_INTF_MUX 0x0100 |
| 301 | #define HSO_INTF_BULK 0x0200 |
| 302 | |
| 303 | /* Type of port */ |
| 304 | #define HSO_PORT_MASK 0xFF |
| 305 | #define HSO_PORT_NO_PORT 0x0 |
| 306 | #define HSO_PORT_CONTROL 0x1 |
| 307 | #define HSO_PORT_APP 0x2 |
| 308 | #define HSO_PORT_GPS 0x3 |
| 309 | #define HSO_PORT_PCSC 0x4 |
| 310 | #define HSO_PORT_APP2 0x5 |
| 311 | #define HSO_PORT_GPS_CONTROL 0x6 |
| 312 | #define HSO_PORT_MSD 0x7 |
| 313 | #define HSO_PORT_VOICE 0x8 |
| 314 | #define HSO_PORT_DIAG2 0x9 |
| 315 | #define HSO_PORT_DIAG 0x10 |
| 316 | #define HSO_PORT_MODEM 0x11 |
| 317 | #define HSO_PORT_NETWORK 0x12 |
| 318 | |
| 319 | /* Additional device info */ |
| 320 | #define HSO_INFO_MASK 0xFF000000 |
| 321 | #define HSO_INFO_CRC_BUG 0x01000000 |
| 322 | |
| 323 | /*****************************************************************************/ |
| 324 | /* Prototypes */ |
| 325 | /*****************************************************************************/ |
| 326 | /* Serial driver functions */ |
Alan Cox | 20b9d17 | 2011-02-14 16:26:50 +0000 | [diff] [blame] | 327 | static int hso_serial_tiocmset(struct tty_struct *tty, |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 328 | unsigned int set, unsigned int clear); |
| 329 | static void ctrl_callback(struct urb *urb); |
Denis Joseph Barrow | 8ef5ba6 | 2008-09-05 17:12:07 +0200 | [diff] [blame] | 330 | static int put_rxbuf_data(struct urb *urb, struct hso_serial *serial); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 331 | static void hso_kick_transmit(struct hso_serial *serial); |
| 332 | /* Helper functions */ |
| 333 | static int hso_mux_submit_intr_urb(struct hso_shared_int *mux_int, |
| 334 | struct usb_device *usb, gfp_t gfp); |
Jan Dumon | 68a351c | 2010-01-05 04:52:13 +0000 | [diff] [blame] | 335 | static void handle_usb_error(int status, const char *function, |
| 336 | struct hso_device *hso_dev); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 337 | static struct usb_endpoint_descriptor *hso_get_ep(struct usb_interface *intf, |
| 338 | int type, int dir); |
| 339 | static int hso_get_mux_ports(struct usb_interface *intf, unsigned char *ports); |
| 340 | static void hso_free_interface(struct usb_interface *intf); |
| 341 | static int hso_start_serial_device(struct hso_device *hso_dev, gfp_t flags); |
| 342 | static int hso_stop_serial_device(struct hso_device *hso_dev); |
| 343 | static int hso_start_net_device(struct hso_device *hso_dev); |
| 344 | static void hso_free_shared_int(struct hso_shared_int *shared_int); |
| 345 | static int hso_stop_net_device(struct hso_device *hso_dev); |
| 346 | static void hso_serial_ref_free(struct kref *ref); |
Denis Joseph Barrow | 8ef5ba6 | 2008-09-05 17:12:07 +0200 | [diff] [blame] | 347 | static void hso_std_serial_read_bulk_callback(struct urb *urb); |
| 348 | static int hso_mux_serial_read(struct hso_serial *serial); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 349 | static void async_get_intf(struct work_struct *data); |
| 350 | static void async_put_intf(struct work_struct *data); |
| 351 | static int hso_put_activity(struct hso_device *hso_dev); |
| 352 | static int hso_get_activity(struct hso_device *hso_dev); |
Denis Joseph Barrow | 542f548 | 2009-01-02 13:47:52 +0000 | [diff] [blame] | 353 | static void tiocmget_intr_callback(struct urb *urb); |
Jan Dumon | 68a351c | 2010-01-05 04:52:13 +0000 | [diff] [blame] | 354 | static void reset_device(struct work_struct *data); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 355 | /*****************************************************************************/ |
| 356 | /* Helping functions */ |
| 357 | /*****************************************************************************/ |
| 358 | |
| 359 | /* #define DEBUG */ |
| 360 | |
Greg Kroah-Hartman | 0235f64 | 2008-08-08 12:02:57 -0700 | [diff] [blame] | 361 | static inline struct hso_net *dev2net(struct hso_device *hso_dev) |
| 362 | { |
| 363 | return hso_dev->port_data.dev_net; |
| 364 | } |
| 365 | |
| 366 | static inline struct hso_serial *dev2ser(struct hso_device *hso_dev) |
| 367 | { |
| 368 | return hso_dev->port_data.dev_serial; |
| 369 | } |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 370 | |
| 371 | /* Debugging functions */ |
| 372 | #ifdef DEBUG |
| 373 | static void dbg_dump(int line_count, const char *func_name, unsigned char *buf, |
| 374 | unsigned int len) |
| 375 | { |
Greg Kroah-Hartman | 0235f64 | 2008-08-08 12:02:57 -0700 | [diff] [blame] | 376 | static char name[255]; |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 377 | |
Greg Kroah-Hartman | 0235f64 | 2008-08-08 12:02:57 -0700 | [diff] [blame] | 378 | sprintf(name, "hso[%d:%s]", line_count, func_name); |
| 379 | print_hex_dump_bytes(name, DUMP_PREFIX_NONE, buf, len); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 380 | } |
| 381 | |
| 382 | #define DUMP(buf_, len_) \ |
Antti Kaijanmäki | 9ce673d | 2009-11-23 10:54:24 -0800 | [diff] [blame] | 383 | dbg_dump(__LINE__, __func__, (unsigned char *)buf_, len_) |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 384 | |
| 385 | #define DUMP1(buf_, len_) \ |
| 386 | do { \ |
| 387 | if (0x01 & debug) \ |
| 388 | DUMP(buf_, len_); \ |
| 389 | } while (0) |
| 390 | #else |
| 391 | #define DUMP(buf_, len_) |
| 392 | #define DUMP1(buf_, len_) |
| 393 | #endif |
| 394 | |
| 395 | /* module parameters */ |
| 396 | static int debug; |
| 397 | static int tty_major; |
| 398 | static int disable_net; |
| 399 | |
| 400 | /* driver info */ |
| 401 | static const char driver_name[] = "hso"; |
| 402 | static const char tty_filename[] = "ttyHS"; |
Filip Aben | 242647b | 2010-07-12 21:21:27 -0700 | [diff] [blame] | 403 | static const char *version = __FILE__ ": " MOD_AUTHOR; |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 404 | /* the usb driver itself (registered in hso_init) */ |
| 405 | static struct usb_driver hso_driver; |
| 406 | /* serial structures */ |
| 407 | static struct tty_driver *tty_drv; |
| 408 | static struct hso_device *serial_table[HSO_SERIAL_TTY_MINORS]; |
| 409 | static struct hso_device *network_table[HSO_MAX_NET_DEVICES]; |
| 410 | static spinlock_t serial_table_lock; |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 411 | |
| 412 | static const s32 default_port_spec[] = { |
| 413 | HSO_INTF_MUX | HSO_PORT_NETWORK, |
| 414 | HSO_INTF_BULK | HSO_PORT_DIAG, |
| 415 | HSO_INTF_BULK | HSO_PORT_MODEM, |
| 416 | 0 |
| 417 | }; |
| 418 | |
| 419 | static const s32 icon321_port_spec[] = { |
| 420 | HSO_INTF_MUX | HSO_PORT_NETWORK, |
| 421 | HSO_INTF_BULK | HSO_PORT_DIAG2, |
| 422 | HSO_INTF_BULK | HSO_PORT_MODEM, |
| 423 | HSO_INTF_BULK | HSO_PORT_DIAG, |
| 424 | 0 |
| 425 | }; |
| 426 | |
| 427 | #define default_port_device(vendor, product) \ |
| 428 | USB_DEVICE(vendor, product), \ |
| 429 | .driver_info = (kernel_ulong_t)default_port_spec |
| 430 | |
| 431 | #define icon321_port_device(vendor, product) \ |
| 432 | USB_DEVICE(vendor, product), \ |
| 433 | .driver_info = (kernel_ulong_t)icon321_port_spec |
| 434 | |
| 435 | /* list of devices we support */ |
| 436 | static const struct usb_device_id hso_ids[] = { |
| 437 | {default_port_device(0x0af0, 0x6711)}, |
| 438 | {default_port_device(0x0af0, 0x6731)}, |
| 439 | {default_port_device(0x0af0, 0x6751)}, |
| 440 | {default_port_device(0x0af0, 0x6771)}, |
| 441 | {default_port_device(0x0af0, 0x6791)}, |
| 442 | {default_port_device(0x0af0, 0x6811)}, |
| 443 | {default_port_device(0x0af0, 0x6911)}, |
| 444 | {default_port_device(0x0af0, 0x6951)}, |
| 445 | {default_port_device(0x0af0, 0x6971)}, |
| 446 | {default_port_device(0x0af0, 0x7011)}, |
| 447 | {default_port_device(0x0af0, 0x7031)}, |
| 448 | {default_port_device(0x0af0, 0x7051)}, |
| 449 | {default_port_device(0x0af0, 0x7071)}, |
| 450 | {default_port_device(0x0af0, 0x7111)}, |
| 451 | {default_port_device(0x0af0, 0x7211)}, |
| 452 | {default_port_device(0x0af0, 0x7251)}, |
| 453 | {default_port_device(0x0af0, 0x7271)}, |
| 454 | {default_port_device(0x0af0, 0x7311)}, |
| 455 | {default_port_device(0x0af0, 0xc031)}, /* Icon-Edge */ |
| 456 | {icon321_port_device(0x0af0, 0xd013)}, /* Module HSxPA */ |
| 457 | {icon321_port_device(0x0af0, 0xd031)}, /* Icon-321 */ |
Denis Joseph Barrow | 95eacee | 2008-08-19 18:07:52 -0700 | [diff] [blame] | 458 | {icon321_port_device(0x0af0, 0xd033)}, /* Icon-322 */ |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 459 | {USB_DEVICE(0x0af0, 0x7301)}, /* GE40x */ |
| 460 | {USB_DEVICE(0x0af0, 0x7361)}, /* GE40x */ |
Filip Aben | 67dd824 | 2009-02-03 15:13:26 -0800 | [diff] [blame] | 461 | {USB_DEVICE(0x0af0, 0x7381)}, /* GE40x */ |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 462 | {USB_DEVICE(0x0af0, 0x7401)}, /* GI 0401 */ |
| 463 | {USB_DEVICE(0x0af0, 0x7501)}, /* GTM 382 */ |
| 464 | {USB_DEVICE(0x0af0, 0x7601)}, /* GE40x */ |
Denis Joseph Barrow | bab04c3 | 2008-11-25 00:26:12 -0800 | [diff] [blame] | 465 | {USB_DEVICE(0x0af0, 0x7701)}, |
Jan Dumon | ec15793 | 2010-01-05 04:50:31 +0000 | [diff] [blame] | 466 | {USB_DEVICE(0x0af0, 0x7706)}, |
Denis Joseph Barrow | bab04c3 | 2008-11-25 00:26:12 -0800 | [diff] [blame] | 467 | {USB_DEVICE(0x0af0, 0x7801)}, |
| 468 | {USB_DEVICE(0x0af0, 0x7901)}, |
Jan Dumon | ec15793 | 2010-01-05 04:50:31 +0000 | [diff] [blame] | 469 | {USB_DEVICE(0x0af0, 0x7A01)}, |
| 470 | {USB_DEVICE(0x0af0, 0x7A05)}, |
Jan Dumon | 9961d842 | 2009-04-02 01:16:44 -0700 | [diff] [blame] | 471 | {USB_DEVICE(0x0af0, 0x8200)}, |
| 472 | {USB_DEVICE(0x0af0, 0x8201)}, |
Jan Dumon | ec15793 | 2010-01-05 04:50:31 +0000 | [diff] [blame] | 473 | {USB_DEVICE(0x0af0, 0x8300)}, |
| 474 | {USB_DEVICE(0x0af0, 0x8302)}, |
| 475 | {USB_DEVICE(0x0af0, 0x8304)}, |
| 476 | {USB_DEVICE(0x0af0, 0x8400)}, |
Filip Aben | dd7496f | 2010-05-25 16:09:23 -0700 | [diff] [blame] | 477 | {USB_DEVICE(0x0af0, 0x8600)}, |
| 478 | {USB_DEVICE(0x0af0, 0x8800)}, |
| 479 | {USB_DEVICE(0x0af0, 0x8900)}, |
Filip Aben | 5c7bf2f | 2010-08-03 05:36:41 +0000 | [diff] [blame] | 480 | {USB_DEVICE(0x0af0, 0x9000)}, |
Jan Dumon | 9961d842 | 2009-04-02 01:16:44 -0700 | [diff] [blame] | 481 | {USB_DEVICE(0x0af0, 0xd035)}, |
Filip Aben | 67dd824 | 2009-02-03 15:13:26 -0800 | [diff] [blame] | 482 | {USB_DEVICE(0x0af0, 0xd055)}, |
Jan Dumon | 9961d842 | 2009-04-02 01:16:44 -0700 | [diff] [blame] | 483 | {USB_DEVICE(0x0af0, 0xd155)}, |
| 484 | {USB_DEVICE(0x0af0, 0xd255)}, |
| 485 | {USB_DEVICE(0x0af0, 0xd057)}, |
| 486 | {USB_DEVICE(0x0af0, 0xd157)}, |
| 487 | {USB_DEVICE(0x0af0, 0xd257)}, |
| 488 | {USB_DEVICE(0x0af0, 0xd357)}, |
Jan Dumon | ec15793 | 2010-01-05 04:50:31 +0000 | [diff] [blame] | 489 | {USB_DEVICE(0x0af0, 0xd058)}, |
| 490 | {USB_DEVICE(0x0af0, 0xc100)}, |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 491 | {} |
| 492 | }; |
| 493 | MODULE_DEVICE_TABLE(usb, hso_ids); |
| 494 | |
| 495 | /* Sysfs attribute */ |
| 496 | static ssize_t hso_sysfs_show_porttype(struct device *dev, |
| 497 | struct device_attribute *attr, |
| 498 | char *buf) |
| 499 | { |
Greg Kroah-Hartman | 1aec5bd | 2009-04-30 12:19:31 +0000 | [diff] [blame] | 500 | struct hso_device *hso_dev = dev_get_drvdata(dev); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 501 | char *port_name; |
| 502 | |
| 503 | if (!hso_dev) |
| 504 | return 0; |
| 505 | |
| 506 | switch (hso_dev->port_spec & HSO_PORT_MASK) { |
| 507 | case HSO_PORT_CONTROL: |
| 508 | port_name = "Control"; |
| 509 | break; |
| 510 | case HSO_PORT_APP: |
| 511 | port_name = "Application"; |
| 512 | break; |
| 513 | case HSO_PORT_APP2: |
| 514 | port_name = "Application2"; |
| 515 | break; |
| 516 | case HSO_PORT_GPS: |
| 517 | port_name = "GPS"; |
| 518 | break; |
| 519 | case HSO_PORT_GPS_CONTROL: |
| 520 | port_name = "GPS Control"; |
| 521 | break; |
| 522 | case HSO_PORT_PCSC: |
| 523 | port_name = "PCSC"; |
| 524 | break; |
| 525 | case HSO_PORT_DIAG: |
| 526 | port_name = "Diagnostic"; |
| 527 | break; |
| 528 | case HSO_PORT_DIAG2: |
| 529 | port_name = "Diagnostic2"; |
| 530 | break; |
| 531 | case HSO_PORT_MODEM: |
| 532 | port_name = "Modem"; |
| 533 | break; |
| 534 | case HSO_PORT_NETWORK: |
| 535 | port_name = "Network"; |
| 536 | break; |
| 537 | default: |
| 538 | port_name = "Unknown"; |
| 539 | break; |
| 540 | } |
| 541 | |
| 542 | return sprintf(buf, "%s\n", port_name); |
| 543 | } |
| 544 | static DEVICE_ATTR(hsotype, S_IRUGO, hso_sysfs_show_porttype, NULL); |
| 545 | |
Denis Joseph Barrow | 8ef5ba6 | 2008-09-05 17:12:07 +0200 | [diff] [blame] | 546 | static int hso_urb_to_index(struct hso_serial *serial, struct urb *urb) |
| 547 | { |
| 548 | int idx; |
| 549 | |
| 550 | for (idx = 0; idx < serial->num_rx_urbs; idx++) |
| 551 | if (serial->rx_urb[idx] == urb) |
| 552 | return idx; |
| 553 | dev_err(serial->parent->dev, "hso_urb_to_index failed\n"); |
| 554 | return -1; |
| 555 | } |
| 556 | |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 557 | /* converts mux value to a port spec value */ |
| 558 | static u32 hso_mux_to_port(int mux) |
| 559 | { |
| 560 | u32 result; |
| 561 | |
| 562 | switch (mux) { |
| 563 | case 0x1: |
| 564 | result = HSO_PORT_CONTROL; |
| 565 | break; |
| 566 | case 0x2: |
| 567 | result = HSO_PORT_APP; |
| 568 | break; |
| 569 | case 0x4: |
| 570 | result = HSO_PORT_PCSC; |
| 571 | break; |
| 572 | case 0x8: |
| 573 | result = HSO_PORT_GPS; |
| 574 | break; |
| 575 | case 0x10: |
| 576 | result = HSO_PORT_APP2; |
| 577 | break; |
| 578 | default: |
| 579 | result = HSO_PORT_NO_PORT; |
| 580 | } |
| 581 | return result; |
| 582 | } |
| 583 | |
| 584 | /* converts port spec value to a mux value */ |
| 585 | static u32 hso_port_to_mux(int port) |
| 586 | { |
| 587 | u32 result; |
| 588 | |
| 589 | switch (port & HSO_PORT_MASK) { |
| 590 | case HSO_PORT_CONTROL: |
| 591 | result = 0x0; |
| 592 | break; |
| 593 | case HSO_PORT_APP: |
| 594 | result = 0x1; |
| 595 | break; |
| 596 | case HSO_PORT_PCSC: |
| 597 | result = 0x2; |
| 598 | break; |
| 599 | case HSO_PORT_GPS: |
| 600 | result = 0x3; |
| 601 | break; |
| 602 | case HSO_PORT_APP2: |
| 603 | result = 0x4; |
| 604 | break; |
| 605 | default: |
| 606 | result = 0x0; |
| 607 | } |
| 608 | return result; |
| 609 | } |
| 610 | |
| 611 | static struct hso_serial *get_serial_by_shared_int_and_type( |
| 612 | struct hso_shared_int *shared_int, |
| 613 | int mux) |
| 614 | { |
| 615 | int i, port; |
| 616 | |
| 617 | port = hso_mux_to_port(mux); |
| 618 | |
| 619 | for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) { |
Joe Perches | 8e95a20 | 2009-12-03 07:58:21 +0000 | [diff] [blame] | 620 | if (serial_table[i] && |
| 621 | (dev2ser(serial_table[i])->shared_int == shared_int) && |
| 622 | ((serial_table[i]->port_spec & HSO_PORT_MASK) == port)) { |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 623 | return dev2ser(serial_table[i]); |
| 624 | } |
| 625 | } |
| 626 | |
| 627 | return NULL; |
| 628 | } |
| 629 | |
| 630 | static struct hso_serial *get_serial_by_index(unsigned index) |
| 631 | { |
Greg Kroah-Hartman | 0235f64 | 2008-08-08 12:02:57 -0700 | [diff] [blame] | 632 | struct hso_serial *serial = NULL; |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 633 | unsigned long flags; |
| 634 | |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 635 | spin_lock_irqsave(&serial_table_lock, flags); |
Greg Kroah-Hartman | 0235f64 | 2008-08-08 12:02:57 -0700 | [diff] [blame] | 636 | if (serial_table[index]) |
| 637 | serial = dev2ser(serial_table[index]); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 638 | spin_unlock_irqrestore(&serial_table_lock, flags); |
| 639 | |
| 640 | return serial; |
| 641 | } |
| 642 | |
| 643 | static int get_free_serial_index(void) |
| 644 | { |
| 645 | int index; |
| 646 | unsigned long flags; |
| 647 | |
| 648 | spin_lock_irqsave(&serial_table_lock, flags); |
| 649 | for (index = 0; index < HSO_SERIAL_TTY_MINORS; index++) { |
| 650 | if (serial_table[index] == NULL) { |
| 651 | spin_unlock_irqrestore(&serial_table_lock, flags); |
| 652 | return index; |
| 653 | } |
| 654 | } |
| 655 | spin_unlock_irqrestore(&serial_table_lock, flags); |
| 656 | |
| 657 | printk(KERN_ERR "%s: no free serial devices in table\n", __func__); |
| 658 | return -1; |
| 659 | } |
| 660 | |
| 661 | static void set_serial_by_index(unsigned index, struct hso_serial *serial) |
| 662 | { |
| 663 | unsigned long flags; |
Greg Kroah-Hartman | 0235f64 | 2008-08-08 12:02:57 -0700 | [diff] [blame] | 664 | |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 665 | spin_lock_irqsave(&serial_table_lock, flags); |
| 666 | if (serial) |
| 667 | serial_table[index] = serial->parent; |
| 668 | else |
| 669 | serial_table[index] = NULL; |
| 670 | spin_unlock_irqrestore(&serial_table_lock, flags); |
| 671 | } |
| 672 | |
Jan Dumon | 68a351c | 2010-01-05 04:52:13 +0000 | [diff] [blame] | 673 | static void handle_usb_error(int status, const char *function, |
| 674 | struct hso_device *hso_dev) |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 675 | { |
| 676 | char *explanation; |
| 677 | |
| 678 | switch (status) { |
| 679 | case -ENODEV: |
| 680 | explanation = "no device"; |
| 681 | break; |
| 682 | case -ENOENT: |
| 683 | explanation = "endpoint not enabled"; |
| 684 | break; |
| 685 | case -EPIPE: |
| 686 | explanation = "endpoint stalled"; |
| 687 | break; |
| 688 | case -ENOSPC: |
| 689 | explanation = "not enough bandwidth"; |
| 690 | break; |
| 691 | case -ESHUTDOWN: |
| 692 | explanation = "device disabled"; |
| 693 | break; |
| 694 | case -EHOSTUNREACH: |
| 695 | explanation = "device suspended"; |
| 696 | break; |
| 697 | case -EINVAL: |
| 698 | case -EAGAIN: |
| 699 | case -EFBIG: |
| 700 | case -EMSGSIZE: |
| 701 | explanation = "internal error"; |
| 702 | break; |
Jan Dumon | 68a351c | 2010-01-05 04:52:13 +0000 | [diff] [blame] | 703 | case -EILSEQ: |
| 704 | case -EPROTO: |
| 705 | case -ETIME: |
| 706 | case -ETIMEDOUT: |
| 707 | explanation = "protocol error"; |
| 708 | if (hso_dev) |
| 709 | schedule_work(&hso_dev->reset_device); |
| 710 | break; |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 711 | default: |
| 712 | explanation = "unknown status"; |
| 713 | break; |
| 714 | } |
Jan Dumon | 68a351c | 2010-01-05 04:52:13 +0000 | [diff] [blame] | 715 | |
| 716 | /* log a meaningful explanation of an USB status */ |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 717 | D1("%s: received USB status - %s (%d)", function, explanation, status); |
| 718 | } |
| 719 | |
| 720 | /* Network interface functions */ |
| 721 | |
| 722 | /* called when net interface is brought up by ifconfig */ |
| 723 | static int hso_net_open(struct net_device *net) |
| 724 | { |
| 725 | struct hso_net *odev = netdev_priv(net); |
| 726 | unsigned long flags = 0; |
| 727 | |
| 728 | if (!odev) { |
| 729 | dev_err(&net->dev, "No net device !\n"); |
| 730 | return -ENODEV; |
| 731 | } |
| 732 | |
| 733 | odev->skb_tx_buf = NULL; |
| 734 | |
| 735 | /* setup environment */ |
| 736 | spin_lock_irqsave(&odev->net_lock, flags); |
| 737 | odev->rx_parse_state = WAIT_IP; |
| 738 | odev->rx_buf_size = 0; |
| 739 | odev->rx_buf_missing = sizeof(struct iphdr); |
| 740 | spin_unlock_irqrestore(&odev->net_lock, flags); |
| 741 | |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 742 | /* We are up and running. */ |
| 743 | set_bit(HSO_NET_RUNNING, &odev->flags); |
Oliver Neukum | 889bd9b | 2008-12-18 03:57:35 +0000 | [diff] [blame] | 744 | hso_start_net_device(odev->parent); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 745 | |
| 746 | /* Tell the kernel we are ready to start receiving from it */ |
| 747 | netif_start_queue(net); |
| 748 | |
| 749 | return 0; |
| 750 | } |
| 751 | |
| 752 | /* called when interface is brought down by ifconfig */ |
| 753 | static int hso_net_close(struct net_device *net) |
| 754 | { |
| 755 | struct hso_net *odev = netdev_priv(net); |
| 756 | |
| 757 | /* we don't need the queue anymore */ |
| 758 | netif_stop_queue(net); |
| 759 | /* no longer running */ |
| 760 | clear_bit(HSO_NET_RUNNING, &odev->flags); |
| 761 | |
| 762 | hso_stop_net_device(odev->parent); |
| 763 | |
| 764 | /* done */ |
| 765 | return 0; |
| 766 | } |
| 767 | |
| 768 | /* USB tells is xmit done, we should start the netqueue again */ |
| 769 | static void write_bulk_callback(struct urb *urb) |
| 770 | { |
| 771 | struct hso_net *odev = urb->context; |
| 772 | int status = urb->status; |
| 773 | |
| 774 | /* Sanity check */ |
| 775 | if (!odev || !test_bit(HSO_NET_RUNNING, &odev->flags)) { |
| 776 | dev_err(&urb->dev->dev, "%s: device not running\n", __func__); |
| 777 | return; |
| 778 | } |
| 779 | |
| 780 | /* Do we still have a valid kernel network device? */ |
| 781 | if (!netif_device_present(odev->net)) { |
| 782 | dev_err(&urb->dev->dev, "%s: net device not present\n", |
| 783 | __func__); |
| 784 | return; |
| 785 | } |
| 786 | |
| 787 | /* log status, but don't act on it, we don't need to resubmit anything |
| 788 | * anyhow */ |
| 789 | if (status) |
Jan Dumon | 68a351c | 2010-01-05 04:52:13 +0000 | [diff] [blame] | 790 | handle_usb_error(status, __func__, odev->parent); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 791 | |
| 792 | hso_put_activity(odev->parent); |
| 793 | |
| 794 | /* Tell the network interface we are ready for another frame */ |
| 795 | netif_wake_queue(odev->net); |
| 796 | } |
| 797 | |
| 798 | /* called by kernel when we need to transmit a packet */ |
Stephen Hemminger | 25a79c4 | 2009-08-31 19:50:45 +0000 | [diff] [blame] | 799 | static netdev_tx_t hso_net_start_xmit(struct sk_buff *skb, |
| 800 | struct net_device *net) |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 801 | { |
| 802 | struct hso_net *odev = netdev_priv(net); |
| 803 | int result; |
| 804 | |
| 805 | /* Tell the kernel, "No more frames 'til we are done with this one." */ |
| 806 | netif_stop_queue(net); |
| 807 | if (hso_get_activity(odev->parent) == -EAGAIN) { |
| 808 | odev->skb_tx_buf = skb; |
Patrick McHardy | 6ed1065 | 2009-06-23 06:03:08 +0000 | [diff] [blame] | 809 | return NETDEV_TX_OK; |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 810 | } |
| 811 | |
| 812 | /* log if asked */ |
| 813 | DUMP1(skb->data, skb->len); |
| 814 | /* Copy it from kernel memory to OUR memory */ |
| 815 | memcpy(odev->mux_bulk_tx_buf, skb->data, skb->len); |
| 816 | D1("len: %d/%d", skb->len, MUX_BULK_TX_BUF_SIZE); |
| 817 | |
| 818 | /* Fill in the URB for shipping it out. */ |
| 819 | usb_fill_bulk_urb(odev->mux_bulk_tx_urb, |
| 820 | odev->parent->usb, |
| 821 | usb_sndbulkpipe(odev->parent->usb, |
| 822 | odev->out_endp-> |
| 823 | bEndpointAddress & 0x7F), |
| 824 | odev->mux_bulk_tx_buf, skb->len, write_bulk_callback, |
| 825 | odev); |
| 826 | |
| 827 | /* Deal with the Zero Length packet problem, I hope */ |
| 828 | odev->mux_bulk_tx_urb->transfer_flags |= URB_ZERO_PACKET; |
| 829 | |
| 830 | /* Send the URB on its merry way. */ |
| 831 | result = usb_submit_urb(odev->mux_bulk_tx_urb, GFP_ATOMIC); |
| 832 | if (result) { |
| 833 | dev_warn(&odev->parent->interface->dev, |
Jan Dumon | 8a5c9c4 | 2010-01-05 04:53:00 +0000 | [diff] [blame] | 834 | "failed mux_bulk_tx_urb %d\n", result); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 835 | net->stats.tx_errors++; |
| 836 | netif_start_queue(net); |
| 837 | } else { |
| 838 | net->stats.tx_packets++; |
| 839 | net->stats.tx_bytes += skb->len; |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 840 | } |
| 841 | dev_kfree_skb(skb); |
| 842 | /* we're done */ |
Patrick McHardy | 5b2c4b9 | 2009-06-12 06:14:36 +0000 | [diff] [blame] | 843 | return NETDEV_TX_OK; |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 844 | } |
| 845 | |
Stephen Hemminger | 0fc0b73 | 2009-09-02 01:03:33 -0700 | [diff] [blame] | 846 | static const struct ethtool_ops ops = { |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 847 | .get_link = ethtool_op_get_link |
| 848 | }; |
| 849 | |
| 850 | /* called when a packet did not ack after watchdogtimeout */ |
| 851 | static void hso_net_tx_timeout(struct net_device *net) |
| 852 | { |
| 853 | struct hso_net *odev = netdev_priv(net); |
| 854 | |
| 855 | if (!odev) |
| 856 | return; |
| 857 | |
| 858 | /* Tell syslog we are hosed. */ |
| 859 | dev_warn(&net->dev, "Tx timed out.\n"); |
| 860 | |
| 861 | /* Tear the waiting frame off the list */ |
Joe Perches | 8e95a20 | 2009-12-03 07:58:21 +0000 | [diff] [blame] | 862 | if (odev->mux_bulk_tx_urb && |
| 863 | (odev->mux_bulk_tx_urb->status == -EINPROGRESS)) |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 864 | usb_unlink_urb(odev->mux_bulk_tx_urb); |
| 865 | |
| 866 | /* Update statistics */ |
| 867 | net->stats.tx_errors++; |
| 868 | } |
| 869 | |
| 870 | /* make a real packet from the received USB buffer */ |
| 871 | static void packetizeRx(struct hso_net *odev, unsigned char *ip_pkt, |
| 872 | unsigned int count, unsigned char is_eop) |
| 873 | { |
| 874 | unsigned short temp_bytes; |
| 875 | unsigned short buffer_offset = 0; |
| 876 | unsigned short frame_len; |
| 877 | unsigned char *tmp_rx_buf; |
| 878 | |
| 879 | /* log if needed */ |
| 880 | D1("Rx %d bytes", count); |
| 881 | DUMP(ip_pkt, min(128, (int)count)); |
| 882 | |
| 883 | while (count) { |
| 884 | switch (odev->rx_parse_state) { |
| 885 | case WAIT_IP: |
| 886 | /* waiting for IP header. */ |
| 887 | /* wanted bytes - size of ip header */ |
| 888 | temp_bytes = |
| 889 | (count < |
| 890 | odev->rx_buf_missing) ? count : odev-> |
| 891 | rx_buf_missing; |
| 892 | |
| 893 | memcpy(((unsigned char *)(&odev->rx_ip_hdr)) + |
| 894 | odev->rx_buf_size, ip_pkt + buffer_offset, |
| 895 | temp_bytes); |
| 896 | |
| 897 | odev->rx_buf_size += temp_bytes; |
| 898 | buffer_offset += temp_bytes; |
| 899 | odev->rx_buf_missing -= temp_bytes; |
| 900 | count -= temp_bytes; |
| 901 | |
| 902 | if (!odev->rx_buf_missing) { |
| 903 | /* header is complete allocate an sk_buffer and |
| 904 | * continue to WAIT_DATA */ |
| 905 | frame_len = ntohs(odev->rx_ip_hdr.tot_len); |
| 906 | |
| 907 | if ((frame_len > DEFAULT_MRU) || |
| 908 | (frame_len < sizeof(struct iphdr))) { |
| 909 | dev_err(&odev->net->dev, |
| 910 | "Invalid frame (%d) length\n", |
| 911 | frame_len); |
| 912 | odev->rx_parse_state = WAIT_SYNC; |
| 913 | continue; |
| 914 | } |
| 915 | /* Allocate an sk_buff */ |
Paulius Zaleckas | d65a68a | 2009-06-04 05:50:29 +0000 | [diff] [blame] | 916 | odev->skb_rx_buf = netdev_alloc_skb(odev->net, |
| 917 | frame_len); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 918 | if (!odev->skb_rx_buf) { |
| 919 | /* We got no receive buffer. */ |
| 920 | D1("could not allocate memory"); |
| 921 | odev->rx_parse_state = WAIT_SYNC; |
| 922 | return; |
| 923 | } |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 924 | |
| 925 | /* Copy what we got so far. make room for iphdr |
| 926 | * after tail. */ |
| 927 | tmp_rx_buf = |
| 928 | skb_put(odev->skb_rx_buf, |
| 929 | sizeof(struct iphdr)); |
| 930 | memcpy(tmp_rx_buf, (char *)&(odev->rx_ip_hdr), |
| 931 | sizeof(struct iphdr)); |
| 932 | |
| 933 | /* ETH_HLEN */ |
| 934 | odev->rx_buf_size = sizeof(struct iphdr); |
| 935 | |
| 936 | /* Filip actually use .tot_len */ |
| 937 | odev->rx_buf_missing = |
| 938 | frame_len - sizeof(struct iphdr); |
| 939 | odev->rx_parse_state = WAIT_DATA; |
| 940 | } |
| 941 | break; |
| 942 | |
| 943 | case WAIT_DATA: |
| 944 | temp_bytes = (count < odev->rx_buf_missing) |
| 945 | ? count : odev->rx_buf_missing; |
| 946 | |
| 947 | /* Copy the rest of the bytes that are left in the |
| 948 | * buffer into the waiting sk_buf. */ |
| 949 | /* Make room for temp_bytes after tail. */ |
| 950 | tmp_rx_buf = skb_put(odev->skb_rx_buf, temp_bytes); |
| 951 | memcpy(tmp_rx_buf, ip_pkt + buffer_offset, temp_bytes); |
| 952 | |
| 953 | odev->rx_buf_missing -= temp_bytes; |
| 954 | count -= temp_bytes; |
| 955 | buffer_offset += temp_bytes; |
| 956 | odev->rx_buf_size += temp_bytes; |
| 957 | if (!odev->rx_buf_missing) { |
| 958 | /* Packet is complete. Inject into stack. */ |
| 959 | /* We have IP packet here */ |
Harvey Harrison | 09640e6 | 2009-02-01 00:45:17 -0800 | [diff] [blame] | 960 | odev->skb_rx_buf->protocol = cpu_to_be16(ETH_P_IP); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 961 | skb_reset_mac_header(odev->skb_rx_buf); |
| 962 | |
| 963 | /* Ship it off to the kernel */ |
| 964 | netif_rx(odev->skb_rx_buf); |
| 965 | /* No longer our buffer. */ |
| 966 | odev->skb_rx_buf = NULL; |
| 967 | |
| 968 | /* update out statistics */ |
| 969 | odev->net->stats.rx_packets++; |
| 970 | |
| 971 | odev->net->stats.rx_bytes += odev->rx_buf_size; |
| 972 | |
| 973 | odev->rx_buf_size = 0; |
| 974 | odev->rx_buf_missing = sizeof(struct iphdr); |
| 975 | odev->rx_parse_state = WAIT_IP; |
| 976 | } |
| 977 | break; |
| 978 | |
| 979 | case WAIT_SYNC: |
| 980 | D1(" W_S"); |
| 981 | count = 0; |
| 982 | break; |
| 983 | default: |
| 984 | D1(" "); |
| 985 | count--; |
| 986 | break; |
| 987 | } |
| 988 | } |
| 989 | |
| 990 | /* Recovery mechanism for WAIT_SYNC state. */ |
| 991 | if (is_eop) { |
| 992 | if (odev->rx_parse_state == WAIT_SYNC) { |
| 993 | odev->rx_parse_state = WAIT_IP; |
| 994 | odev->rx_buf_size = 0; |
| 995 | odev->rx_buf_missing = sizeof(struct iphdr); |
| 996 | } |
| 997 | } |
| 998 | } |
| 999 | |
Joe Perches | 5591c75 | 2010-12-21 02:16:09 -0800 | [diff] [blame] | 1000 | static void fix_crc_bug(struct urb *urb, __le16 max_packet_size) |
| 1001 | { |
| 1002 | static const u8 crc_check[4] = { 0xDE, 0xAD, 0xBE, 0xEF }; |
| 1003 | u32 rest = urb->actual_length % le16_to_cpu(max_packet_size); |
| 1004 | |
| 1005 | if (((rest == 5) || (rest == 6)) && |
| 1006 | !memcmp(((u8 *)urb->transfer_buffer) + urb->actual_length - 4, |
| 1007 | crc_check, 4)) { |
| 1008 | urb->actual_length -= 4; |
| 1009 | } |
| 1010 | } |
| 1011 | |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1012 | /* Moving data from usb to kernel (in interrupt state) */ |
| 1013 | static void read_bulk_callback(struct urb *urb) |
| 1014 | { |
| 1015 | struct hso_net *odev = urb->context; |
| 1016 | struct net_device *net; |
| 1017 | int result; |
| 1018 | int status = urb->status; |
| 1019 | |
| 1020 | /* is al ok? (Filip: Who's Al ?) */ |
| 1021 | if (status) { |
Jan Dumon | 68a351c | 2010-01-05 04:52:13 +0000 | [diff] [blame] | 1022 | handle_usb_error(status, __func__, odev->parent); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1023 | return; |
| 1024 | } |
| 1025 | |
| 1026 | /* Sanity check */ |
| 1027 | if (!odev || !test_bit(HSO_NET_RUNNING, &odev->flags)) { |
| 1028 | D1("BULK IN callback but driver is not active!"); |
| 1029 | return; |
| 1030 | } |
| 1031 | usb_mark_last_busy(urb->dev); |
| 1032 | |
| 1033 | net = odev->net; |
| 1034 | |
| 1035 | if (!netif_device_present(net)) { |
| 1036 | /* Somebody killed our network interface... */ |
| 1037 | return; |
| 1038 | } |
| 1039 | |
Joe Perches | 5591c75 | 2010-12-21 02:16:09 -0800 | [diff] [blame] | 1040 | if (odev->parent->port_spec & HSO_INFO_CRC_BUG) |
| 1041 | fix_crc_bug(urb, odev->in_endp->wMaxPacketSize); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1042 | |
| 1043 | /* do we even have a packet? */ |
| 1044 | if (urb->actual_length) { |
| 1045 | /* Handle the IP stream, add header and push it onto network |
| 1046 | * stack if the packet is complete. */ |
| 1047 | spin_lock(&odev->net_lock); |
| 1048 | packetizeRx(odev, urb->transfer_buffer, urb->actual_length, |
| 1049 | (urb->transfer_buffer_length > |
| 1050 | urb->actual_length) ? 1 : 0); |
| 1051 | spin_unlock(&odev->net_lock); |
| 1052 | } |
| 1053 | |
| 1054 | /* We are done with this URB, resubmit it. Prep the USB to wait for |
| 1055 | * another frame. Reuse same as received. */ |
| 1056 | usb_fill_bulk_urb(urb, |
| 1057 | odev->parent->usb, |
| 1058 | usb_rcvbulkpipe(odev->parent->usb, |
| 1059 | odev->in_endp-> |
| 1060 | bEndpointAddress & 0x7F), |
| 1061 | urb->transfer_buffer, MUX_BULK_RX_BUF_SIZE, |
| 1062 | read_bulk_callback, odev); |
| 1063 | |
| 1064 | /* Give this to the USB subsystem so it can tell us when more data |
| 1065 | * arrives. */ |
| 1066 | result = usb_submit_urb(urb, GFP_ATOMIC); |
| 1067 | if (result) |
| 1068 | dev_warn(&odev->parent->interface->dev, |
Jan Dumon | 8a5c9c4 | 2010-01-05 04:53:00 +0000 | [diff] [blame] | 1069 | "%s failed submit mux_bulk_rx_urb %d\n", __func__, |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1070 | result); |
| 1071 | } |
| 1072 | |
| 1073 | /* Serial driver functions */ |
| 1074 | |
Alan Cox | ac9720c | 2009-01-02 13:47:45 +0000 | [diff] [blame] | 1075 | static void hso_init_termios(struct ktermios *termios) |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1076 | { |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1077 | /* |
| 1078 | * The default requirements for this device are: |
| 1079 | */ |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1080 | termios->c_iflag &= |
| 1081 | ~(IGNBRK /* disable ignore break */ |
| 1082 | | BRKINT /* disable break causes interrupt */ |
| 1083 | | PARMRK /* disable mark parity errors */ |
| 1084 | | ISTRIP /* disable clear high bit of input characters */ |
| 1085 | | INLCR /* disable translate NL to CR */ |
| 1086 | | IGNCR /* disable ignore CR */ |
| 1087 | | ICRNL /* disable translate CR to NL */ |
| 1088 | | IXON); /* disable enable XON/XOFF flow control */ |
| 1089 | |
| 1090 | /* disable postprocess output characters */ |
| 1091 | termios->c_oflag &= ~OPOST; |
| 1092 | |
| 1093 | termios->c_lflag &= |
| 1094 | ~(ECHO /* disable echo input characters */ |
| 1095 | | ECHONL /* disable echo new line */ |
| 1096 | | ICANON /* disable erase, kill, werase, and rprnt |
| 1097 | special characters */ |
| 1098 | | ISIG /* disable interrupt, quit, and suspend special |
| 1099 | characters */ |
| 1100 | | IEXTEN); /* disable non-POSIX special characters */ |
| 1101 | |
| 1102 | termios->c_cflag &= |
| 1103 | ~(CSIZE /* no size */ |
| 1104 | | PARENB /* disable parity bit */ |
| 1105 | | CBAUD /* clear current baud rate */ |
| 1106 | | CBAUDEX); /* clear current buad rate */ |
| 1107 | |
| 1108 | termios->c_cflag |= CS8; /* character size 8 bits */ |
| 1109 | |
| 1110 | /* baud rate 115200 */ |
Alan Cox | ac9720c | 2009-01-02 13:47:45 +0000 | [diff] [blame] | 1111 | tty_termios_encode_baud_rate(termios, 115200, 115200); |
| 1112 | } |
| 1113 | |
| 1114 | static void _hso_serial_set_termios(struct tty_struct *tty, |
| 1115 | struct ktermios *old) |
| 1116 | { |
| 1117 | struct hso_serial *serial = get_serial_by_tty(tty); |
| 1118 | struct ktermios *termios; |
| 1119 | |
| 1120 | if (!serial) { |
| 1121 | printk(KERN_ERR "%s: no tty structures", __func__); |
| 1122 | return; |
| 1123 | } |
| 1124 | |
| 1125 | D4("port %d", serial->minor); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1126 | |
| 1127 | /* |
Alan Cox | ac9720c | 2009-01-02 13:47:45 +0000 | [diff] [blame] | 1128 | * Fix up unsupported bits |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1129 | */ |
Alan Cox | ac9720c | 2009-01-02 13:47:45 +0000 | [diff] [blame] | 1130 | termios = tty->termios; |
| 1131 | termios->c_iflag &= ~IXON; /* disable enable XON/XOFF flow control */ |
| 1132 | |
| 1133 | termios->c_cflag &= |
| 1134 | ~(CSIZE /* no size */ |
| 1135 | | PARENB /* disable parity bit */ |
| 1136 | | CBAUD /* clear current baud rate */ |
| 1137 | | CBAUDEX); /* clear current buad rate */ |
| 1138 | |
| 1139 | termios->c_cflag |= CS8; /* character size 8 bits */ |
| 1140 | |
| 1141 | /* baud rate 115200 */ |
| 1142 | tty_encode_baud_rate(tty, 115200, 115200); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1143 | } |
| 1144 | |
Denis Joseph Barrow | 8ef5ba6 | 2008-09-05 17:12:07 +0200 | [diff] [blame] | 1145 | static void hso_resubmit_rx_bulk_urb(struct hso_serial *serial, struct urb *urb) |
| 1146 | { |
| 1147 | int result; |
Denis Joseph Barrow | 8ef5ba6 | 2008-09-05 17:12:07 +0200 | [diff] [blame] | 1148 | /* We are done with this URB, resubmit it. Prep the USB to wait for |
| 1149 | * another frame */ |
| 1150 | usb_fill_bulk_urb(urb, serial->parent->usb, |
| 1151 | usb_rcvbulkpipe(serial->parent->usb, |
| 1152 | serial->in_endp-> |
| 1153 | bEndpointAddress & 0x7F), |
| 1154 | urb->transfer_buffer, serial->rx_data_length, |
| 1155 | hso_std_serial_read_bulk_callback, serial); |
| 1156 | /* Give this to the USB subsystem so it can tell us when more data |
| 1157 | * arrives. */ |
| 1158 | result = usb_submit_urb(urb, GFP_ATOMIC); |
| 1159 | if (result) { |
| 1160 | dev_err(&urb->dev->dev, "%s failed submit serial rx_urb %d\n", |
| 1161 | __func__, result); |
| 1162 | } |
| 1163 | } |
| 1164 | |
| 1165 | |
| 1166 | |
| 1167 | |
| 1168 | static void put_rxbuf_data_and_resubmit_bulk_urb(struct hso_serial *serial) |
| 1169 | { |
| 1170 | int count; |
| 1171 | struct urb *curr_urb; |
| 1172 | |
| 1173 | while (serial->rx_urb_filled[serial->curr_rx_urb_idx]) { |
| 1174 | curr_urb = serial->rx_urb[serial->curr_rx_urb_idx]; |
| 1175 | count = put_rxbuf_data(curr_urb, serial); |
| 1176 | if (count == -1) |
| 1177 | return; |
| 1178 | if (count == 0) { |
| 1179 | serial->curr_rx_urb_idx++; |
| 1180 | if (serial->curr_rx_urb_idx >= serial->num_rx_urbs) |
| 1181 | serial->curr_rx_urb_idx = 0; |
| 1182 | hso_resubmit_rx_bulk_urb(serial, curr_urb); |
| 1183 | } |
| 1184 | } |
| 1185 | } |
| 1186 | |
| 1187 | static void put_rxbuf_data_and_resubmit_ctrl_urb(struct hso_serial *serial) |
| 1188 | { |
| 1189 | int count = 0; |
| 1190 | struct urb *urb; |
| 1191 | |
| 1192 | urb = serial->rx_urb[0]; |
| 1193 | if (serial->open_count > 0) { |
| 1194 | count = put_rxbuf_data(urb, serial); |
| 1195 | if (count == -1) |
| 1196 | return; |
| 1197 | } |
| 1198 | /* Re issue a read as long as we receive data. */ |
| 1199 | |
| 1200 | if (count == 0 && ((urb->actual_length != 0) || |
| 1201 | (serial->rx_state == RX_PENDING))) { |
| 1202 | serial->rx_state = RX_SENT; |
| 1203 | hso_mux_serial_read(serial); |
| 1204 | } else |
| 1205 | serial->rx_state = RX_IDLE; |
| 1206 | } |
| 1207 | |
| 1208 | |
| 1209 | /* read callback for Diag and CS port */ |
| 1210 | static void hso_std_serial_read_bulk_callback(struct urb *urb) |
| 1211 | { |
| 1212 | struct hso_serial *serial = urb->context; |
| 1213 | int status = urb->status; |
| 1214 | |
| 1215 | /* sanity check */ |
| 1216 | if (!serial) { |
| 1217 | D1("serial == NULL"); |
| 1218 | return; |
| 1219 | } else if (status) { |
Jan Dumon | 68a351c | 2010-01-05 04:52:13 +0000 | [diff] [blame] | 1220 | handle_usb_error(status, __func__, serial->parent); |
Denis Joseph Barrow | 8ef5ba6 | 2008-09-05 17:12:07 +0200 | [diff] [blame] | 1221 | return; |
| 1222 | } |
| 1223 | |
| 1224 | D4("\n--- Got serial_read_bulk callback %02x ---", status); |
| 1225 | D1("Actual length = %d\n", urb->actual_length); |
| 1226 | DUMP1(urb->transfer_buffer, urb->actual_length); |
| 1227 | |
| 1228 | /* Anyone listening? */ |
| 1229 | if (serial->open_count == 0) |
| 1230 | return; |
| 1231 | |
| 1232 | if (status == 0) { |
Joe Perches | 5591c75 | 2010-12-21 02:16:09 -0800 | [diff] [blame] | 1233 | if (serial->parent->port_spec & HSO_INFO_CRC_BUG) |
| 1234 | fix_crc_bug(urb, serial->in_endp->wMaxPacketSize); |
Denis Joseph Barrow | 8ef5ba6 | 2008-09-05 17:12:07 +0200 | [diff] [blame] | 1235 | /* Valid data, handle RX data */ |
| 1236 | spin_lock(&serial->serial_lock); |
| 1237 | serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 1; |
| 1238 | put_rxbuf_data_and_resubmit_bulk_urb(serial); |
| 1239 | spin_unlock(&serial->serial_lock); |
| 1240 | } else if (status == -ENOENT || status == -ECONNRESET) { |
| 1241 | /* Unlinked - check for throttled port. */ |
| 1242 | D2("Port %d, successfully unlinked urb", serial->minor); |
| 1243 | spin_lock(&serial->serial_lock); |
| 1244 | serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 0; |
| 1245 | hso_resubmit_rx_bulk_urb(serial, urb); |
| 1246 | spin_unlock(&serial->serial_lock); |
| 1247 | } else { |
| 1248 | D2("Port %d, status = %d for read urb", serial->minor, status); |
| 1249 | return; |
| 1250 | } |
| 1251 | } |
| 1252 | |
| 1253 | /* |
| 1254 | * This needs to be a tasklet otherwise we will |
| 1255 | * end up recursively calling this function. |
| 1256 | */ |
Hannes Eder | 0227abc | 2009-02-14 11:47:47 +0000 | [diff] [blame] | 1257 | static void hso_unthrottle_tasklet(struct hso_serial *serial) |
Denis Joseph Barrow | 8ef5ba6 | 2008-09-05 17:12:07 +0200 | [diff] [blame] | 1258 | { |
| 1259 | unsigned long flags; |
| 1260 | |
| 1261 | spin_lock_irqsave(&serial->serial_lock, flags); |
| 1262 | if ((serial->parent->port_spec & HSO_INTF_MUX)) |
| 1263 | put_rxbuf_data_and_resubmit_ctrl_urb(serial); |
| 1264 | else |
| 1265 | put_rxbuf_data_and_resubmit_bulk_urb(serial); |
| 1266 | spin_unlock_irqrestore(&serial->serial_lock, flags); |
| 1267 | } |
| 1268 | |
| 1269 | static void hso_unthrottle(struct tty_struct *tty) |
| 1270 | { |
| 1271 | struct hso_serial *serial = get_serial_by_tty(tty); |
| 1272 | |
| 1273 | tasklet_hi_schedule(&serial->unthrottle_tasklet); |
| 1274 | } |
| 1275 | |
Hannes Eder | 0227abc | 2009-02-14 11:47:47 +0000 | [diff] [blame] | 1276 | static void hso_unthrottle_workfunc(struct work_struct *work) |
Denis Joseph Barrow | 8ef5ba6 | 2008-09-05 17:12:07 +0200 | [diff] [blame] | 1277 | { |
| 1278 | struct hso_serial *serial = |
| 1279 | container_of(work, struct hso_serial, |
| 1280 | retry_unthrottle_workqueue); |
| 1281 | hso_unthrottle_tasklet(serial); |
| 1282 | } |
| 1283 | |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1284 | /* open the requested serial port */ |
| 1285 | static int hso_serial_open(struct tty_struct *tty, struct file *filp) |
| 1286 | { |
| 1287 | struct hso_serial *serial = get_serial_by_index(tty->index); |
David S. Miller | ab153d8 | 2008-11-25 03:52:46 -0800 | [diff] [blame] | 1288 | int result; |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1289 | |
| 1290 | /* sanity check */ |
| 1291 | if (serial == NULL || serial->magic != HSO_SERIAL_MAGIC) { |
Alan Cox | e136e30 | 2009-01-02 13:47:39 +0000 | [diff] [blame] | 1292 | WARN_ON(1); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1293 | tty->driver_data = NULL; |
| 1294 | D1("Failed to open port"); |
| 1295 | return -ENODEV; |
| 1296 | } |
| 1297 | |
David S. Miller | ab153d8 | 2008-11-25 03:52:46 -0800 | [diff] [blame] | 1298 | mutex_lock(&serial->parent->mutex); |
David S. Miller | ab153d8 | 2008-11-25 03:52:46 -0800 | [diff] [blame] | 1299 | result = usb_autopm_get_interface(serial->parent->interface); |
| 1300 | if (result < 0) |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1301 | goto err_out; |
| 1302 | |
| 1303 | D1("Opening %d", serial->minor); |
| 1304 | kref_get(&serial->parent->ref); |
| 1305 | |
| 1306 | /* setup */ |
Alan Cox | e136e30 | 2009-01-02 13:47:39 +0000 | [diff] [blame] | 1307 | spin_lock_irq(&serial->serial_lock); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1308 | tty->driver_data = serial; |
Alan Cox | fe41cbb | 2009-01-15 13:31:15 +0000 | [diff] [blame] | 1309 | tty_kref_put(serial->tty); |
Alan Cox | e136e30 | 2009-01-02 13:47:39 +0000 | [diff] [blame] | 1310 | serial->tty = tty_kref_get(tty); |
| 1311 | spin_unlock_irq(&serial->serial_lock); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1312 | |
David S. Miller | 2f9889a | 2008-11-25 03:53:09 -0800 | [diff] [blame] | 1313 | /* check for port already opened, if not set the termios */ |
| 1314 | serial->open_count++; |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1315 | if (serial->open_count == 1) { |
Denis Joseph Barrow | 8ef5ba6 | 2008-09-05 17:12:07 +0200 | [diff] [blame] | 1316 | serial->rx_state = RX_IDLE; |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1317 | /* Force default termio settings */ |
| 1318 | _hso_serial_set_termios(tty, NULL); |
Denis Joseph Barrow | 8ef5ba6 | 2008-09-05 17:12:07 +0200 | [diff] [blame] | 1319 | tasklet_init(&serial->unthrottle_tasklet, |
| 1320 | (void (*)(unsigned long))hso_unthrottle_tasklet, |
| 1321 | (unsigned long)serial); |
| 1322 | INIT_WORK(&serial->retry_unthrottle_workqueue, |
| 1323 | hso_unthrottle_workfunc); |
David S. Miller | ab153d8 | 2008-11-25 03:52:46 -0800 | [diff] [blame] | 1324 | result = hso_start_serial_device(serial->parent, GFP_KERNEL); |
| 1325 | if (result) { |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1326 | hso_stop_serial_device(serial->parent); |
| 1327 | serial->open_count--; |
David S. Miller | ab153d8 | 2008-11-25 03:52:46 -0800 | [diff] [blame] | 1328 | kref_put(&serial->parent->ref, hso_serial_ref_free); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1329 | } |
| 1330 | } else { |
| 1331 | D1("Port was already open"); |
| 1332 | } |
| 1333 | |
| 1334 | usb_autopm_put_interface(serial->parent->interface); |
| 1335 | |
| 1336 | /* done */ |
David S. Miller | ab153d8 | 2008-11-25 03:52:46 -0800 | [diff] [blame] | 1337 | if (result) |
Alan Cox | 20b9d17 | 2011-02-14 16:26:50 +0000 | [diff] [blame] | 1338 | hso_serial_tiocmset(tty, TIOCM_RTS | TIOCM_DTR, 0); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1339 | err_out: |
David S. Miller | ab153d8 | 2008-11-25 03:52:46 -0800 | [diff] [blame] | 1340 | mutex_unlock(&serial->parent->mutex); |
| 1341 | return result; |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1342 | } |
| 1343 | |
| 1344 | /* close the requested serial port */ |
| 1345 | static void hso_serial_close(struct tty_struct *tty, struct file *filp) |
| 1346 | { |
| 1347 | struct hso_serial *serial = tty->driver_data; |
| 1348 | u8 usb_gone; |
| 1349 | |
| 1350 | D1("Closing serial port"); |
| 1351 | |
Alan Cox | e136e30 | 2009-01-02 13:47:39 +0000 | [diff] [blame] | 1352 | /* Open failed, no close cleanup required */ |
| 1353 | if (serial == NULL) |
| 1354 | return; |
| 1355 | |
David S. Miller | ab153d8 | 2008-11-25 03:52:46 -0800 | [diff] [blame] | 1356 | mutex_lock(&serial->parent->mutex); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1357 | usb_gone = serial->parent->usb_gone; |
| 1358 | |
| 1359 | if (!usb_gone) |
| 1360 | usb_autopm_get_interface(serial->parent->interface); |
| 1361 | |
| 1362 | /* reset the rts and dtr */ |
| 1363 | /* do the actual close */ |
| 1364 | serial->open_count--; |
Antti Kaijanmäki | dcfcb25 | 2009-11-23 10:54:47 -0800 | [diff] [blame] | 1365 | |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1366 | if (serial->open_count <= 0) { |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1367 | serial->open_count = 0; |
Alan Cox | e136e30 | 2009-01-02 13:47:39 +0000 | [diff] [blame] | 1368 | spin_lock_irq(&serial->serial_lock); |
| 1369 | if (serial->tty == tty) { |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1370 | serial->tty->driver_data = NULL; |
| 1371 | serial->tty = NULL; |
Alan Cox | e136e30 | 2009-01-02 13:47:39 +0000 | [diff] [blame] | 1372 | tty_kref_put(tty); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1373 | } |
Alan Cox | e136e30 | 2009-01-02 13:47:39 +0000 | [diff] [blame] | 1374 | spin_unlock_irq(&serial->serial_lock); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1375 | if (!usb_gone) |
| 1376 | hso_stop_serial_device(serial->parent); |
Denis Joseph Barrow | 8ef5ba6 | 2008-09-05 17:12:07 +0200 | [diff] [blame] | 1377 | tasklet_kill(&serial->unthrottle_tasklet); |
| 1378 | cancel_work_sync(&serial->retry_unthrottle_workqueue); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1379 | } |
Denis Joseph Barrow | 8ef5ba6 | 2008-09-05 17:12:07 +0200 | [diff] [blame] | 1380 | |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1381 | if (!usb_gone) |
| 1382 | usb_autopm_put_interface(serial->parent->interface); |
David S. Miller | ab153d8 | 2008-11-25 03:52:46 -0800 | [diff] [blame] | 1383 | |
| 1384 | mutex_unlock(&serial->parent->mutex); |
Antti Kaijanmäki | dcfcb25 | 2009-11-23 10:54:47 -0800 | [diff] [blame] | 1385 | |
| 1386 | kref_put(&serial->parent->ref, hso_serial_ref_free); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1387 | } |
| 1388 | |
| 1389 | /* close the requested serial port */ |
| 1390 | static int hso_serial_write(struct tty_struct *tty, const unsigned char *buf, |
| 1391 | int count) |
| 1392 | { |
| 1393 | struct hso_serial *serial = get_serial_by_tty(tty); |
| 1394 | int space, tx_bytes; |
| 1395 | unsigned long flags; |
| 1396 | |
| 1397 | /* sanity check */ |
| 1398 | if (serial == NULL) { |
| 1399 | printk(KERN_ERR "%s: serial is NULL\n", __func__); |
| 1400 | return -ENODEV; |
| 1401 | } |
| 1402 | |
| 1403 | spin_lock_irqsave(&serial->serial_lock, flags); |
| 1404 | |
| 1405 | space = serial->tx_data_length - serial->tx_buffer_count; |
| 1406 | tx_bytes = (count < space) ? count : space; |
| 1407 | |
| 1408 | if (!tx_bytes) |
| 1409 | goto out; |
| 1410 | |
| 1411 | memcpy(serial->tx_buffer + serial->tx_buffer_count, buf, tx_bytes); |
| 1412 | serial->tx_buffer_count += tx_bytes; |
| 1413 | |
| 1414 | out: |
| 1415 | spin_unlock_irqrestore(&serial->serial_lock, flags); |
| 1416 | |
| 1417 | hso_kick_transmit(serial); |
| 1418 | /* done */ |
| 1419 | return tx_bytes; |
| 1420 | } |
| 1421 | |
| 1422 | /* how much room is there for writing */ |
| 1423 | static int hso_serial_write_room(struct tty_struct *tty) |
| 1424 | { |
| 1425 | struct hso_serial *serial = get_serial_by_tty(tty); |
| 1426 | int room; |
| 1427 | unsigned long flags; |
| 1428 | |
| 1429 | spin_lock_irqsave(&serial->serial_lock, flags); |
| 1430 | room = serial->tx_data_length - serial->tx_buffer_count; |
| 1431 | spin_unlock_irqrestore(&serial->serial_lock, flags); |
| 1432 | |
| 1433 | /* return free room */ |
| 1434 | return room; |
| 1435 | } |
| 1436 | |
| 1437 | /* setup the term */ |
| 1438 | static void hso_serial_set_termios(struct tty_struct *tty, struct ktermios *old) |
| 1439 | { |
| 1440 | struct hso_serial *serial = get_serial_by_tty(tty); |
| 1441 | unsigned long flags; |
| 1442 | |
| 1443 | if (old) |
| 1444 | D5("Termios called with: cflags new[%d] - old[%d]", |
| 1445 | tty->termios->c_cflag, old->c_cflag); |
| 1446 | |
| 1447 | /* the actual setup */ |
| 1448 | spin_lock_irqsave(&serial->serial_lock, flags); |
| 1449 | if (serial->open_count) |
| 1450 | _hso_serial_set_termios(tty, old); |
| 1451 | else |
| 1452 | tty->termios = old; |
| 1453 | spin_unlock_irqrestore(&serial->serial_lock, flags); |
| 1454 | |
| 1455 | /* done */ |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1456 | } |
| 1457 | |
| 1458 | /* how many characters in the buffer */ |
| 1459 | static int hso_serial_chars_in_buffer(struct tty_struct *tty) |
| 1460 | { |
| 1461 | struct hso_serial *serial = get_serial_by_tty(tty); |
| 1462 | int chars; |
| 1463 | unsigned long flags; |
| 1464 | |
| 1465 | /* sanity check */ |
| 1466 | if (serial == NULL) |
| 1467 | return 0; |
| 1468 | |
| 1469 | spin_lock_irqsave(&serial->serial_lock, flags); |
| 1470 | chars = serial->tx_buffer_count; |
| 1471 | spin_unlock_irqrestore(&serial->serial_lock, flags); |
| 1472 | |
| 1473 | return chars; |
| 1474 | } |
Hannes Eder | 0227abc | 2009-02-14 11:47:47 +0000 | [diff] [blame] | 1475 | static int tiocmget_submit_urb(struct hso_serial *serial, |
| 1476 | struct hso_tiocmget *tiocmget, |
| 1477 | struct usb_device *usb) |
Denis Joseph Barrow | 542f548 | 2009-01-02 13:47:52 +0000 | [diff] [blame] | 1478 | { |
| 1479 | int result; |
| 1480 | |
| 1481 | if (serial->parent->usb_gone) |
| 1482 | return -ENODEV; |
| 1483 | usb_fill_int_urb(tiocmget->urb, usb, |
| 1484 | usb_rcvintpipe(usb, |
| 1485 | tiocmget->endp-> |
| 1486 | bEndpointAddress & 0x7F), |
| 1487 | &tiocmget->serial_state_notification, |
| 1488 | sizeof(struct hso_serial_state_notification), |
| 1489 | tiocmget_intr_callback, serial, |
| 1490 | tiocmget->endp->bInterval); |
| 1491 | result = usb_submit_urb(tiocmget->urb, GFP_ATOMIC); |
| 1492 | if (result) { |
| 1493 | dev_warn(&usb->dev, "%s usb_submit_urb failed %d\n", __func__, |
| 1494 | result); |
| 1495 | } |
| 1496 | return result; |
| 1497 | |
| 1498 | } |
| 1499 | |
| 1500 | static void tiocmget_intr_callback(struct urb *urb) |
| 1501 | { |
| 1502 | struct hso_serial *serial = urb->context; |
| 1503 | struct hso_tiocmget *tiocmget; |
| 1504 | int status = urb->status; |
| 1505 | u16 UART_state_bitmap, prev_UART_state_bitmap; |
| 1506 | struct uart_icount *icount; |
| 1507 | struct hso_serial_state_notification *serial_state_notification; |
| 1508 | struct usb_device *usb; |
| 1509 | |
| 1510 | /* Sanity checks */ |
| 1511 | if (!serial) |
| 1512 | return; |
| 1513 | if (status) { |
Jan Dumon | 68a351c | 2010-01-05 04:52:13 +0000 | [diff] [blame] | 1514 | handle_usb_error(status, __func__, serial->parent); |
Denis Joseph Barrow | 542f548 | 2009-01-02 13:47:52 +0000 | [diff] [blame] | 1515 | return; |
| 1516 | } |
| 1517 | tiocmget = serial->tiocmget; |
| 1518 | if (!tiocmget) |
| 1519 | return; |
| 1520 | usb = serial->parent->usb; |
| 1521 | serial_state_notification = &tiocmget->serial_state_notification; |
| 1522 | if (serial_state_notification->bmRequestType != BM_REQUEST_TYPE || |
| 1523 | serial_state_notification->bNotification != B_NOTIFICATION || |
| 1524 | le16_to_cpu(serial_state_notification->wValue) != W_VALUE || |
| 1525 | le16_to_cpu(serial_state_notification->wIndex) != W_INDEX || |
| 1526 | le16_to_cpu(serial_state_notification->wLength) != W_LENGTH) { |
| 1527 | dev_warn(&usb->dev, |
| 1528 | "hso received invalid serial state notification\n"); |
| 1529 | DUMP(serial_state_notification, |
Antti Kaijanmäki | 9ce673d | 2009-11-23 10:54:24 -0800 | [diff] [blame] | 1530 | sizeof(struct hso_serial_state_notification)); |
Denis Joseph Barrow | 542f548 | 2009-01-02 13:47:52 +0000 | [diff] [blame] | 1531 | } else { |
| 1532 | |
| 1533 | UART_state_bitmap = le16_to_cpu(serial_state_notification-> |
| 1534 | UART_state_bitmap); |
| 1535 | prev_UART_state_bitmap = tiocmget->prev_UART_state_bitmap; |
| 1536 | icount = &tiocmget->icount; |
| 1537 | spin_lock(&serial->serial_lock); |
| 1538 | if ((UART_state_bitmap & B_OVERRUN) != |
| 1539 | (prev_UART_state_bitmap & B_OVERRUN)) |
| 1540 | icount->parity++; |
| 1541 | if ((UART_state_bitmap & B_PARITY) != |
| 1542 | (prev_UART_state_bitmap & B_PARITY)) |
| 1543 | icount->parity++; |
| 1544 | if ((UART_state_bitmap & B_FRAMING) != |
| 1545 | (prev_UART_state_bitmap & B_FRAMING)) |
| 1546 | icount->frame++; |
| 1547 | if ((UART_state_bitmap & B_RING_SIGNAL) && |
| 1548 | !(prev_UART_state_bitmap & B_RING_SIGNAL)) |
| 1549 | icount->rng++; |
| 1550 | if ((UART_state_bitmap & B_BREAK) != |
| 1551 | (prev_UART_state_bitmap & B_BREAK)) |
| 1552 | icount->brk++; |
| 1553 | if ((UART_state_bitmap & B_TX_CARRIER) != |
| 1554 | (prev_UART_state_bitmap & B_TX_CARRIER)) |
| 1555 | icount->dsr++; |
| 1556 | if ((UART_state_bitmap & B_RX_CARRIER) != |
| 1557 | (prev_UART_state_bitmap & B_RX_CARRIER)) |
| 1558 | icount->dcd++; |
| 1559 | tiocmget->prev_UART_state_bitmap = UART_state_bitmap; |
| 1560 | spin_unlock(&serial->serial_lock); |
| 1561 | tiocmget->intr_completed = 1; |
| 1562 | wake_up_interruptible(&tiocmget->waitq); |
| 1563 | } |
| 1564 | memset(serial_state_notification, 0, |
| 1565 | sizeof(struct hso_serial_state_notification)); |
| 1566 | tiocmget_submit_urb(serial, |
| 1567 | tiocmget, |
| 1568 | serial->parent->usb); |
| 1569 | } |
| 1570 | |
| 1571 | /* |
| 1572 | * next few functions largely stolen from drivers/serial/serial_core.c |
| 1573 | */ |
| 1574 | /* Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change |
| 1575 | * - mask passed in arg for lines of interest |
| 1576 | * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) |
| 1577 | * Caller should use TIOCGICOUNT to see which one it was |
| 1578 | */ |
| 1579 | static int |
| 1580 | hso_wait_modem_status(struct hso_serial *serial, unsigned long arg) |
| 1581 | { |
| 1582 | DECLARE_WAITQUEUE(wait, current); |
| 1583 | struct uart_icount cprev, cnow; |
| 1584 | struct hso_tiocmget *tiocmget; |
| 1585 | int ret; |
| 1586 | |
| 1587 | tiocmget = serial->tiocmget; |
| 1588 | if (!tiocmget) |
| 1589 | return -ENOENT; |
| 1590 | /* |
| 1591 | * note the counters on entry |
| 1592 | */ |
| 1593 | spin_lock_irq(&serial->serial_lock); |
| 1594 | memcpy(&cprev, &tiocmget->icount, sizeof(struct uart_icount)); |
| 1595 | spin_unlock_irq(&serial->serial_lock); |
| 1596 | add_wait_queue(&tiocmget->waitq, &wait); |
| 1597 | for (;;) { |
| 1598 | spin_lock_irq(&serial->serial_lock); |
| 1599 | memcpy(&cnow, &tiocmget->icount, sizeof(struct uart_icount)); |
| 1600 | spin_unlock_irq(&serial->serial_lock); |
| 1601 | set_current_state(TASK_INTERRUPTIBLE); |
| 1602 | if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || |
| 1603 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || |
| 1604 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd))) { |
| 1605 | ret = 0; |
| 1606 | break; |
| 1607 | } |
| 1608 | schedule(); |
| 1609 | /* see if a signal did it */ |
| 1610 | if (signal_pending(current)) { |
| 1611 | ret = -ERESTARTSYS; |
| 1612 | break; |
| 1613 | } |
| 1614 | cprev = cnow; |
| 1615 | } |
| 1616 | current->state = TASK_RUNNING; |
| 1617 | remove_wait_queue(&tiocmget->waitq, &wait); |
| 1618 | |
| 1619 | return ret; |
| 1620 | } |
| 1621 | |
| 1622 | /* |
| 1623 | * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) |
| 1624 | * Return: write counters to the user passed counter struct |
| 1625 | * NB: both 1->0 and 0->1 transitions are counted except for |
| 1626 | * RI where only 0->1 is counted. |
| 1627 | */ |
Alan Cox | 0bca1b9 | 2010-09-16 18:21:40 +0100 | [diff] [blame] | 1628 | static int hso_get_count(struct tty_struct *tty, |
| 1629 | struct serial_icounter_struct *icount) |
Denis Joseph Barrow | 542f548 | 2009-01-02 13:47:52 +0000 | [diff] [blame] | 1630 | { |
Denis Joseph Barrow | 542f548 | 2009-01-02 13:47:52 +0000 | [diff] [blame] | 1631 | struct uart_icount cnow; |
Alan Cox | 0bca1b9 | 2010-09-16 18:21:40 +0100 | [diff] [blame] | 1632 | struct hso_serial *serial = get_serial_by_tty(tty); |
Denis Joseph Barrow | 542f548 | 2009-01-02 13:47:52 +0000 | [diff] [blame] | 1633 | struct hso_tiocmget *tiocmget = serial->tiocmget; |
| 1634 | |
Dan Rosenberg | 7011e66 | 2010-09-15 11:43:28 +0000 | [diff] [blame] | 1635 | memset(&icount, 0, sizeof(struct serial_icounter_struct)); |
| 1636 | |
Denis Joseph Barrow | 542f548 | 2009-01-02 13:47:52 +0000 | [diff] [blame] | 1637 | if (!tiocmget) |
| 1638 | return -ENOENT; |
| 1639 | spin_lock_irq(&serial->serial_lock); |
| 1640 | memcpy(&cnow, &tiocmget->icount, sizeof(struct uart_icount)); |
| 1641 | spin_unlock_irq(&serial->serial_lock); |
| 1642 | |
Alan Cox | 0bca1b9 | 2010-09-16 18:21:40 +0100 | [diff] [blame] | 1643 | icount->cts = cnow.cts; |
| 1644 | icount->dsr = cnow.dsr; |
| 1645 | icount->rng = cnow.rng; |
| 1646 | icount->dcd = cnow.dcd; |
| 1647 | icount->rx = cnow.rx; |
| 1648 | icount->tx = cnow.tx; |
| 1649 | icount->frame = cnow.frame; |
| 1650 | icount->overrun = cnow.overrun; |
| 1651 | icount->parity = cnow.parity; |
| 1652 | icount->brk = cnow.brk; |
| 1653 | icount->buf_overrun = cnow.buf_overrun; |
Denis Joseph Barrow | 542f548 | 2009-01-02 13:47:52 +0000 | [diff] [blame] | 1654 | |
Alan Cox | 0bca1b9 | 2010-09-16 18:21:40 +0100 | [diff] [blame] | 1655 | return 0; |
Denis Joseph Barrow | 542f548 | 2009-01-02 13:47:52 +0000 | [diff] [blame] | 1656 | } |
| 1657 | |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1658 | |
Alan Cox | 60b33c1 | 2011-02-14 16:26:14 +0000 | [diff] [blame] | 1659 | static int hso_serial_tiocmget(struct tty_struct *tty) |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1660 | { |
Denis Joseph Barrow | 542f548 | 2009-01-02 13:47:52 +0000 | [diff] [blame] | 1661 | int retval; |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1662 | struct hso_serial *serial = get_serial_by_tty(tty); |
Denis Joseph Barrow | 542f548 | 2009-01-02 13:47:52 +0000 | [diff] [blame] | 1663 | struct hso_tiocmget *tiocmget; |
| 1664 | u16 UART_state_bitmap; |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1665 | |
| 1666 | /* sanity check */ |
| 1667 | if (!serial) { |
| 1668 | D1("no tty structures"); |
| 1669 | return -EINVAL; |
| 1670 | } |
Denis Joseph Barrow | 542f548 | 2009-01-02 13:47:52 +0000 | [diff] [blame] | 1671 | spin_lock_irq(&serial->serial_lock); |
| 1672 | retval = ((serial->rts_state) ? TIOCM_RTS : 0) | |
David S. Miller | cd90ee1 | 2008-11-25 03:52:17 -0800 | [diff] [blame] | 1673 | ((serial->dtr_state) ? TIOCM_DTR : 0); |
Denis Joseph Barrow | 542f548 | 2009-01-02 13:47:52 +0000 | [diff] [blame] | 1674 | tiocmget = serial->tiocmget; |
| 1675 | if (tiocmget) { |
David S. Miller | cd90ee1 | 2008-11-25 03:52:17 -0800 | [diff] [blame] | 1676 | |
Denis Joseph Barrow | 542f548 | 2009-01-02 13:47:52 +0000 | [diff] [blame] | 1677 | UART_state_bitmap = le16_to_cpu( |
| 1678 | tiocmget->prev_UART_state_bitmap); |
| 1679 | if (UART_state_bitmap & B_RING_SIGNAL) |
| 1680 | retval |= TIOCM_RNG; |
| 1681 | if (UART_state_bitmap & B_RX_CARRIER) |
| 1682 | retval |= TIOCM_CD; |
| 1683 | if (UART_state_bitmap & B_TX_CARRIER) |
| 1684 | retval |= TIOCM_DSR; |
| 1685 | } |
| 1686 | spin_unlock_irq(&serial->serial_lock); |
| 1687 | return retval; |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1688 | } |
| 1689 | |
Alan Cox | 20b9d17 | 2011-02-14 16:26:50 +0000 | [diff] [blame] | 1690 | static int hso_serial_tiocmset(struct tty_struct *tty, |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1691 | unsigned int set, unsigned int clear) |
| 1692 | { |
| 1693 | int val = 0; |
| 1694 | unsigned long flags; |
| 1695 | int if_num; |
| 1696 | struct hso_serial *serial = get_serial_by_tty(tty); |
| 1697 | |
| 1698 | /* sanity check */ |
| 1699 | if (!serial) { |
| 1700 | D1("no tty structures"); |
| 1701 | return -EINVAL; |
| 1702 | } |
Jan Dumon | 0e0367e | 2010-01-05 04:52:42 +0000 | [diff] [blame] | 1703 | |
| 1704 | if ((serial->parent->port_spec & HSO_PORT_MASK) != HSO_PORT_MODEM) |
| 1705 | return -EINVAL; |
| 1706 | |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1707 | if_num = serial->parent->interface->altsetting->desc.bInterfaceNumber; |
| 1708 | |
| 1709 | spin_lock_irqsave(&serial->serial_lock, flags); |
| 1710 | if (set & TIOCM_RTS) |
| 1711 | serial->rts_state = 1; |
| 1712 | if (set & TIOCM_DTR) |
| 1713 | serial->dtr_state = 1; |
| 1714 | |
| 1715 | if (clear & TIOCM_RTS) |
| 1716 | serial->rts_state = 0; |
| 1717 | if (clear & TIOCM_DTR) |
| 1718 | serial->dtr_state = 0; |
| 1719 | |
| 1720 | if (serial->dtr_state) |
| 1721 | val |= 0x01; |
| 1722 | if (serial->rts_state) |
| 1723 | val |= 0x02; |
| 1724 | |
| 1725 | spin_unlock_irqrestore(&serial->serial_lock, flags); |
| 1726 | |
| 1727 | return usb_control_msg(serial->parent->usb, |
| 1728 | usb_rcvctrlpipe(serial->parent->usb, 0), 0x22, |
| 1729 | 0x21, val, if_num, NULL, 0, |
| 1730 | USB_CTRL_SET_TIMEOUT); |
| 1731 | } |
| 1732 | |
Alan Cox | 6caa76b | 2011-02-14 16:27:22 +0000 | [diff] [blame] | 1733 | static int hso_serial_ioctl(struct tty_struct *tty, |
Denis Joseph Barrow | 542f548 | 2009-01-02 13:47:52 +0000 | [diff] [blame] | 1734 | unsigned int cmd, unsigned long arg) |
| 1735 | { |
| 1736 | struct hso_serial *serial = get_serial_by_tty(tty); |
Denis Joseph Barrow | 542f548 | 2009-01-02 13:47:52 +0000 | [diff] [blame] | 1737 | int ret = 0; |
| 1738 | D4("IOCTL cmd: %d, arg: %ld", cmd, arg); |
| 1739 | |
| 1740 | if (!serial) |
| 1741 | return -ENODEV; |
| 1742 | switch (cmd) { |
| 1743 | case TIOCMIWAIT: |
| 1744 | ret = hso_wait_modem_status(serial, arg); |
| 1745 | break; |
Denis Joseph Barrow | 542f548 | 2009-01-02 13:47:52 +0000 | [diff] [blame] | 1746 | default: |
| 1747 | ret = -ENOIOCTLCMD; |
| 1748 | break; |
| 1749 | } |
| 1750 | return ret; |
| 1751 | } |
| 1752 | |
| 1753 | |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1754 | /* starts a transmit */ |
| 1755 | static void hso_kick_transmit(struct hso_serial *serial) |
| 1756 | { |
| 1757 | u8 *temp; |
| 1758 | unsigned long flags; |
| 1759 | int res; |
| 1760 | |
| 1761 | spin_lock_irqsave(&serial->serial_lock, flags); |
| 1762 | if (!serial->tx_buffer_count) |
| 1763 | goto out; |
| 1764 | |
| 1765 | if (serial->tx_urb_used) |
| 1766 | goto out; |
| 1767 | |
| 1768 | /* Wakeup USB interface if necessary */ |
| 1769 | if (hso_get_activity(serial->parent) == -EAGAIN) |
| 1770 | goto out; |
| 1771 | |
| 1772 | /* Switch pointers around to avoid memcpy */ |
| 1773 | temp = serial->tx_buffer; |
| 1774 | serial->tx_buffer = serial->tx_data; |
| 1775 | serial->tx_data = temp; |
| 1776 | serial->tx_data_count = serial->tx_buffer_count; |
| 1777 | serial->tx_buffer_count = 0; |
| 1778 | |
| 1779 | /* If temp is set, it means we switched buffers */ |
| 1780 | if (temp && serial->write_data) { |
| 1781 | res = serial->write_data(serial); |
| 1782 | if (res >= 0) |
| 1783 | serial->tx_urb_used = 1; |
| 1784 | } |
| 1785 | out: |
| 1786 | spin_unlock_irqrestore(&serial->serial_lock, flags); |
| 1787 | } |
| 1788 | |
| 1789 | /* make a request (for reading and writing data to muxed serial port) */ |
| 1790 | static int mux_device_request(struct hso_serial *serial, u8 type, u16 port, |
| 1791 | struct urb *ctrl_urb, |
| 1792 | struct usb_ctrlrequest *ctrl_req, |
| 1793 | u8 *ctrl_urb_data, u32 size) |
| 1794 | { |
| 1795 | int result; |
| 1796 | int pipe; |
| 1797 | |
| 1798 | /* Sanity check */ |
| 1799 | if (!serial || !ctrl_urb || !ctrl_req) { |
| 1800 | printk(KERN_ERR "%s: Wrong arguments\n", __func__); |
| 1801 | return -EINVAL; |
| 1802 | } |
| 1803 | |
| 1804 | /* initialize */ |
| 1805 | ctrl_req->wValue = 0; |
Denis Joseph Barrow | b74f62c | 2009-01-12 21:56:49 -0800 | [diff] [blame] | 1806 | ctrl_req->wIndex = cpu_to_le16(hso_port_to_mux(port)); |
| 1807 | ctrl_req->wLength = cpu_to_le16(size); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1808 | |
| 1809 | if (type == USB_CDC_GET_ENCAPSULATED_RESPONSE) { |
| 1810 | /* Reading command */ |
| 1811 | ctrl_req->bRequestType = USB_DIR_IN | |
| 1812 | USB_TYPE_OPTION_VENDOR | |
| 1813 | USB_RECIP_INTERFACE; |
| 1814 | ctrl_req->bRequest = USB_CDC_GET_ENCAPSULATED_RESPONSE; |
| 1815 | pipe = usb_rcvctrlpipe(serial->parent->usb, 0); |
| 1816 | } else { |
| 1817 | /* Writing command */ |
| 1818 | ctrl_req->bRequestType = USB_DIR_OUT | |
| 1819 | USB_TYPE_OPTION_VENDOR | |
| 1820 | USB_RECIP_INTERFACE; |
| 1821 | ctrl_req->bRequest = USB_CDC_SEND_ENCAPSULATED_COMMAND; |
| 1822 | pipe = usb_sndctrlpipe(serial->parent->usb, 0); |
| 1823 | } |
| 1824 | /* syslog */ |
| 1825 | D2("%s command (%02x) len: %d, port: %d", |
| 1826 | type == USB_CDC_GET_ENCAPSULATED_RESPONSE ? "Read" : "Write", |
| 1827 | ctrl_req->bRequestType, ctrl_req->wLength, port); |
| 1828 | |
| 1829 | /* Load ctrl urb */ |
| 1830 | ctrl_urb->transfer_flags = 0; |
| 1831 | usb_fill_control_urb(ctrl_urb, |
| 1832 | serial->parent->usb, |
| 1833 | pipe, |
| 1834 | (u8 *) ctrl_req, |
| 1835 | ctrl_urb_data, size, ctrl_callback, serial); |
| 1836 | /* Send it on merry way */ |
| 1837 | result = usb_submit_urb(ctrl_urb, GFP_ATOMIC); |
| 1838 | if (result) { |
| 1839 | dev_err(&ctrl_urb->dev->dev, |
Jan Dumon | 8a5c9c4 | 2010-01-05 04:53:00 +0000 | [diff] [blame] | 1840 | "%s failed submit ctrl_urb %d type %d\n", __func__, |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1841 | result, type); |
| 1842 | return result; |
| 1843 | } |
| 1844 | |
| 1845 | /* done */ |
| 1846 | return size; |
| 1847 | } |
| 1848 | |
| 1849 | /* called by intr_callback when read occurs */ |
| 1850 | static int hso_mux_serial_read(struct hso_serial *serial) |
| 1851 | { |
| 1852 | if (!serial) |
| 1853 | return -EINVAL; |
| 1854 | |
| 1855 | /* clean data */ |
| 1856 | memset(serial->rx_data[0], 0, CTRL_URB_RX_SIZE); |
| 1857 | /* make the request */ |
| 1858 | |
| 1859 | if (serial->num_rx_urbs != 1) { |
| 1860 | dev_err(&serial->parent->interface->dev, |
| 1861 | "ERROR: mux'd reads with multiple buffers " |
| 1862 | "not possible\n"); |
| 1863 | return 0; |
| 1864 | } |
| 1865 | return mux_device_request(serial, |
| 1866 | USB_CDC_GET_ENCAPSULATED_RESPONSE, |
| 1867 | serial->parent->port_spec & HSO_PORT_MASK, |
| 1868 | serial->rx_urb[0], |
| 1869 | &serial->ctrl_req_rx, |
| 1870 | serial->rx_data[0], serial->rx_data_length); |
| 1871 | } |
| 1872 | |
| 1873 | /* used for muxed serial port callback (muxed serial read) */ |
| 1874 | static void intr_callback(struct urb *urb) |
| 1875 | { |
| 1876 | struct hso_shared_int *shared_int = urb->context; |
| 1877 | struct hso_serial *serial; |
| 1878 | unsigned char *port_req; |
| 1879 | int status = urb->status; |
| 1880 | int i; |
| 1881 | |
| 1882 | usb_mark_last_busy(urb->dev); |
| 1883 | |
| 1884 | /* sanity check */ |
| 1885 | if (!shared_int) |
| 1886 | return; |
| 1887 | |
| 1888 | /* status check */ |
| 1889 | if (status) { |
Jan Dumon | 68a351c | 2010-01-05 04:52:13 +0000 | [diff] [blame] | 1890 | handle_usb_error(status, __func__, NULL); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1891 | return; |
| 1892 | } |
| 1893 | D4("\n--- Got intr callback 0x%02X ---", status); |
| 1894 | |
| 1895 | /* what request? */ |
| 1896 | port_req = urb->transfer_buffer; |
| 1897 | D4(" port_req = 0x%.2X\n", *port_req); |
| 1898 | /* loop over all muxed ports to find the one sending this */ |
| 1899 | for (i = 0; i < 8; i++) { |
| 1900 | /* max 8 channels on MUX */ |
| 1901 | if (*port_req & (1 << i)) { |
| 1902 | serial = get_serial_by_shared_int_and_type(shared_int, |
| 1903 | (1 << i)); |
| 1904 | if (serial != NULL) { |
| 1905 | D1("Pending read interrupt on port %d\n", i); |
Denis Joseph Barrow | 8ef5ba6 | 2008-09-05 17:12:07 +0200 | [diff] [blame] | 1906 | spin_lock(&serial->serial_lock); |
Jan Dumon | f4763e9 | 2010-01-05 04:51:28 +0000 | [diff] [blame] | 1907 | if (serial->rx_state == RX_IDLE && |
| 1908 | serial->open_count > 0) { |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1909 | /* Setup and send a ctrl req read on |
| 1910 | * port i */ |
Jan Dumon | f4763e9 | 2010-01-05 04:51:28 +0000 | [diff] [blame] | 1911 | if (!serial->rx_urb_filled[0]) { |
Denis Joseph Barrow | 8ef5ba6 | 2008-09-05 17:12:07 +0200 | [diff] [blame] | 1912 | serial->rx_state = RX_SENT; |
| 1913 | hso_mux_serial_read(serial); |
| 1914 | } else |
| 1915 | serial->rx_state = RX_PENDING; |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1916 | } else { |
Jan Dumon | f4763e9 | 2010-01-05 04:51:28 +0000 | [diff] [blame] | 1917 | D1("Already a read pending on " |
| 1918 | "port %d or port not open\n", i); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1919 | } |
Denis Joseph Barrow | 8ef5ba6 | 2008-09-05 17:12:07 +0200 | [diff] [blame] | 1920 | spin_unlock(&serial->serial_lock); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1921 | } |
| 1922 | } |
| 1923 | } |
| 1924 | /* Resubmit interrupt urb */ |
| 1925 | hso_mux_submit_intr_urb(shared_int, urb->dev, GFP_ATOMIC); |
| 1926 | } |
| 1927 | |
| 1928 | /* called for writing to muxed serial port */ |
| 1929 | static int hso_mux_serial_write_data(struct hso_serial *serial) |
| 1930 | { |
| 1931 | if (NULL == serial) |
| 1932 | return -EINVAL; |
| 1933 | |
| 1934 | return mux_device_request(serial, |
| 1935 | USB_CDC_SEND_ENCAPSULATED_COMMAND, |
| 1936 | serial->parent->port_spec & HSO_PORT_MASK, |
| 1937 | serial->tx_urb, |
| 1938 | &serial->ctrl_req_tx, |
| 1939 | serial->tx_data, serial->tx_data_count); |
| 1940 | } |
| 1941 | |
| 1942 | /* write callback for Diag and CS port */ |
| 1943 | static void hso_std_serial_write_bulk_callback(struct urb *urb) |
| 1944 | { |
| 1945 | struct hso_serial *serial = urb->context; |
| 1946 | int status = urb->status; |
Alan Cox | e136e30 | 2009-01-02 13:47:39 +0000 | [diff] [blame] | 1947 | struct tty_struct *tty; |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1948 | |
| 1949 | /* sanity check */ |
| 1950 | if (!serial) { |
| 1951 | D1("serial == NULL"); |
| 1952 | return; |
| 1953 | } |
| 1954 | |
| 1955 | spin_lock(&serial->serial_lock); |
| 1956 | serial->tx_urb_used = 0; |
Alan Cox | e136e30 | 2009-01-02 13:47:39 +0000 | [diff] [blame] | 1957 | tty = tty_kref_get(serial->tty); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1958 | spin_unlock(&serial->serial_lock); |
| 1959 | if (status) { |
Jan Dumon | 68a351c | 2010-01-05 04:52:13 +0000 | [diff] [blame] | 1960 | handle_usb_error(status, __func__, serial->parent); |
Alan Cox | e136e30 | 2009-01-02 13:47:39 +0000 | [diff] [blame] | 1961 | tty_kref_put(tty); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1962 | return; |
| 1963 | } |
| 1964 | hso_put_activity(serial->parent); |
Alan Cox | e136e30 | 2009-01-02 13:47:39 +0000 | [diff] [blame] | 1965 | if (tty) { |
| 1966 | tty_wakeup(tty); |
| 1967 | tty_kref_put(tty); |
| 1968 | } |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1969 | hso_kick_transmit(serial); |
| 1970 | |
| 1971 | D1(" "); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 1972 | } |
| 1973 | |
| 1974 | /* called for writing diag or CS serial port */ |
| 1975 | static int hso_std_serial_write_data(struct hso_serial *serial) |
| 1976 | { |
| 1977 | int count = serial->tx_data_count; |
| 1978 | int result; |
| 1979 | |
| 1980 | usb_fill_bulk_urb(serial->tx_urb, |
| 1981 | serial->parent->usb, |
| 1982 | usb_sndbulkpipe(serial->parent->usb, |
| 1983 | serial->out_endp-> |
| 1984 | bEndpointAddress & 0x7F), |
| 1985 | serial->tx_data, serial->tx_data_count, |
| 1986 | hso_std_serial_write_bulk_callback, serial); |
| 1987 | |
| 1988 | result = usb_submit_urb(serial->tx_urb, GFP_ATOMIC); |
| 1989 | if (result) { |
| 1990 | dev_warn(&serial->parent->usb->dev, |
| 1991 | "Failed to submit urb - res %d\n", result); |
| 1992 | return result; |
| 1993 | } |
| 1994 | |
| 1995 | return count; |
| 1996 | } |
| 1997 | |
| 1998 | /* callback after read or write on muxed serial port */ |
| 1999 | static void ctrl_callback(struct urb *urb) |
| 2000 | { |
| 2001 | struct hso_serial *serial = urb->context; |
| 2002 | struct usb_ctrlrequest *req; |
| 2003 | int status = urb->status; |
Alan Cox | e136e30 | 2009-01-02 13:47:39 +0000 | [diff] [blame] | 2004 | struct tty_struct *tty; |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2005 | |
| 2006 | /* sanity check */ |
| 2007 | if (!serial) |
| 2008 | return; |
| 2009 | |
| 2010 | spin_lock(&serial->serial_lock); |
| 2011 | serial->tx_urb_used = 0; |
Alan Cox | e136e30 | 2009-01-02 13:47:39 +0000 | [diff] [blame] | 2012 | tty = tty_kref_get(serial->tty); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2013 | spin_unlock(&serial->serial_lock); |
| 2014 | if (status) { |
Jan Dumon | 68a351c | 2010-01-05 04:52:13 +0000 | [diff] [blame] | 2015 | handle_usb_error(status, __func__, serial->parent); |
Alan Cox | e136e30 | 2009-01-02 13:47:39 +0000 | [diff] [blame] | 2016 | tty_kref_put(tty); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2017 | return; |
| 2018 | } |
| 2019 | |
| 2020 | /* what request? */ |
| 2021 | req = (struct usb_ctrlrequest *)(urb->setup_packet); |
| 2022 | D4("\n--- Got muxed ctrl callback 0x%02X ---", status); |
| 2023 | D4("Actual length of urb = %d\n", urb->actual_length); |
| 2024 | DUMP1(urb->transfer_buffer, urb->actual_length); |
| 2025 | |
| 2026 | if (req->bRequestType == |
| 2027 | (USB_DIR_IN | USB_TYPE_OPTION_VENDOR | USB_RECIP_INTERFACE)) { |
| 2028 | /* response to a read command */ |
Denis Joseph Barrow | 8ef5ba6 | 2008-09-05 17:12:07 +0200 | [diff] [blame] | 2029 | serial->rx_urb_filled[0] = 1; |
| 2030 | spin_lock(&serial->serial_lock); |
| 2031 | put_rxbuf_data_and_resubmit_ctrl_urb(serial); |
| 2032 | spin_unlock(&serial->serial_lock); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2033 | } else { |
| 2034 | hso_put_activity(serial->parent); |
Alan Cox | e136e30 | 2009-01-02 13:47:39 +0000 | [diff] [blame] | 2035 | if (tty) |
| 2036 | tty_wakeup(tty); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2037 | /* response to a write command */ |
| 2038 | hso_kick_transmit(serial); |
| 2039 | } |
Alan Cox | e136e30 | 2009-01-02 13:47:39 +0000 | [diff] [blame] | 2040 | tty_kref_put(tty); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2041 | } |
| 2042 | |
| 2043 | /* handle RX data for serial port */ |
Denis Joseph Barrow | 8ef5ba6 | 2008-09-05 17:12:07 +0200 | [diff] [blame] | 2044 | static int put_rxbuf_data(struct urb *urb, struct hso_serial *serial) |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2045 | { |
Alan Cox | e136e30 | 2009-01-02 13:47:39 +0000 | [diff] [blame] | 2046 | struct tty_struct *tty; |
Denis Joseph Barrow | 8ef5ba6 | 2008-09-05 17:12:07 +0200 | [diff] [blame] | 2047 | int write_length_remaining = 0; |
| 2048 | int curr_write_len; |
Alan Cox | e136e30 | 2009-01-02 13:47:39 +0000 | [diff] [blame] | 2049 | |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2050 | /* Sanity check */ |
| 2051 | if (urb == NULL || serial == NULL) { |
| 2052 | D1("serial = NULL"); |
Denis Joseph Barrow | 8ef5ba6 | 2008-09-05 17:12:07 +0200 | [diff] [blame] | 2053 | return -2; |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2054 | } |
| 2055 | |
Denis Joseph Barrow | d45eb81 | 2009-01-15 13:31:24 +0000 | [diff] [blame] | 2056 | /* All callers to put_rxbuf_data hold serial_lock */ |
Alan Cox | e136e30 | 2009-01-02 13:47:39 +0000 | [diff] [blame] | 2057 | tty = tty_kref_get(serial->tty); |
Alan Cox | e136e30 | 2009-01-02 13:47:39 +0000 | [diff] [blame] | 2058 | |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2059 | /* Push data to tty */ |
Denis Joseph Barrow | 8ef5ba6 | 2008-09-05 17:12:07 +0200 | [diff] [blame] | 2060 | if (tty) { |
| 2061 | write_length_remaining = urb->actual_length - |
| 2062 | serial->curr_rx_urb_offset; |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2063 | D1("data to push to tty"); |
Denis Joseph Barrow | 8ef5ba6 | 2008-09-05 17:12:07 +0200 | [diff] [blame] | 2064 | while (write_length_remaining) { |
Denis Joseph Barrow | 5839b41 | 2009-01-15 13:31:34 +0000 | [diff] [blame] | 2065 | if (test_bit(TTY_THROTTLED, &tty->flags)) { |
| 2066 | tty_kref_put(tty); |
Denis Joseph Barrow | 8ef5ba6 | 2008-09-05 17:12:07 +0200 | [diff] [blame] | 2067 | return -1; |
Denis Joseph Barrow | 5839b41 | 2009-01-15 13:31:34 +0000 | [diff] [blame] | 2068 | } |
Denis Joseph Barrow | 8ef5ba6 | 2008-09-05 17:12:07 +0200 | [diff] [blame] | 2069 | curr_write_len = tty_insert_flip_string |
| 2070 | (tty, urb->transfer_buffer + |
| 2071 | serial->curr_rx_urb_offset, |
| 2072 | write_length_remaining); |
| 2073 | serial->curr_rx_urb_offset += curr_write_len; |
| 2074 | write_length_remaining -= curr_write_len; |
| 2075 | tty_flip_buffer_push(tty); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2076 | } |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2077 | } |
Denis Joseph Barrow | 8ef5ba6 | 2008-09-05 17:12:07 +0200 | [diff] [blame] | 2078 | if (write_length_remaining == 0) { |
| 2079 | serial->curr_rx_urb_offset = 0; |
| 2080 | serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 0; |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2081 | } |
Alan Cox | e136e30 | 2009-01-02 13:47:39 +0000 | [diff] [blame] | 2082 | tty_kref_put(tty); |
Denis Joseph Barrow | 8ef5ba6 | 2008-09-05 17:12:07 +0200 | [diff] [blame] | 2083 | return write_length_remaining; |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2084 | } |
| 2085 | |
Denis Joseph Barrow | 8ef5ba6 | 2008-09-05 17:12:07 +0200 | [diff] [blame] | 2086 | |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2087 | /* Base driver functions */ |
| 2088 | |
| 2089 | static void hso_log_port(struct hso_device *hso_dev) |
| 2090 | { |
| 2091 | char *port_type; |
| 2092 | char port_dev[20]; |
| 2093 | |
| 2094 | switch (hso_dev->port_spec & HSO_PORT_MASK) { |
| 2095 | case HSO_PORT_CONTROL: |
| 2096 | port_type = "Control"; |
| 2097 | break; |
| 2098 | case HSO_PORT_APP: |
| 2099 | port_type = "Application"; |
| 2100 | break; |
| 2101 | case HSO_PORT_GPS: |
| 2102 | port_type = "GPS"; |
| 2103 | break; |
| 2104 | case HSO_PORT_GPS_CONTROL: |
| 2105 | port_type = "GPS control"; |
| 2106 | break; |
| 2107 | case HSO_PORT_APP2: |
| 2108 | port_type = "Application2"; |
| 2109 | break; |
| 2110 | case HSO_PORT_PCSC: |
| 2111 | port_type = "PCSC"; |
| 2112 | break; |
| 2113 | case HSO_PORT_DIAG: |
| 2114 | port_type = "Diagnostic"; |
| 2115 | break; |
| 2116 | case HSO_PORT_DIAG2: |
| 2117 | port_type = "Diagnostic2"; |
| 2118 | break; |
| 2119 | case HSO_PORT_MODEM: |
| 2120 | port_type = "Modem"; |
| 2121 | break; |
| 2122 | case HSO_PORT_NETWORK: |
| 2123 | port_type = "Network"; |
| 2124 | break; |
| 2125 | default: |
| 2126 | port_type = "Unknown"; |
| 2127 | break; |
| 2128 | } |
| 2129 | if ((hso_dev->port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) { |
| 2130 | sprintf(port_dev, "%s", dev2net(hso_dev)->net->name); |
| 2131 | } else |
| 2132 | sprintf(port_dev, "/dev/%s%d", tty_filename, |
| 2133 | dev2ser(hso_dev)->minor); |
| 2134 | |
| 2135 | dev_dbg(&hso_dev->interface->dev, "HSO: Found %s port %s\n", |
| 2136 | port_type, port_dev); |
| 2137 | } |
| 2138 | |
| 2139 | static int hso_start_net_device(struct hso_device *hso_dev) |
| 2140 | { |
| 2141 | int i, result = 0; |
| 2142 | struct hso_net *hso_net = dev2net(hso_dev); |
| 2143 | |
| 2144 | if (!hso_net) |
| 2145 | return -ENODEV; |
| 2146 | |
| 2147 | /* send URBs for all read buffers */ |
| 2148 | for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) { |
| 2149 | |
| 2150 | /* Prep a receive URB */ |
| 2151 | usb_fill_bulk_urb(hso_net->mux_bulk_rx_urb_pool[i], |
| 2152 | hso_dev->usb, |
| 2153 | usb_rcvbulkpipe(hso_dev->usb, |
| 2154 | hso_net->in_endp-> |
| 2155 | bEndpointAddress & 0x7F), |
| 2156 | hso_net->mux_bulk_rx_buf_pool[i], |
| 2157 | MUX_BULK_RX_BUF_SIZE, read_bulk_callback, |
| 2158 | hso_net); |
| 2159 | |
| 2160 | /* Put it out there so the device can send us stuff */ |
| 2161 | result = usb_submit_urb(hso_net->mux_bulk_rx_urb_pool[i], |
| 2162 | GFP_NOIO); |
| 2163 | if (result) |
| 2164 | dev_warn(&hso_dev->usb->dev, |
| 2165 | "%s failed mux_bulk_rx_urb[%d] %d\n", __func__, |
| 2166 | i, result); |
| 2167 | } |
| 2168 | |
| 2169 | return result; |
| 2170 | } |
| 2171 | |
| 2172 | static int hso_stop_net_device(struct hso_device *hso_dev) |
| 2173 | { |
| 2174 | int i; |
| 2175 | struct hso_net *hso_net = dev2net(hso_dev); |
| 2176 | |
| 2177 | if (!hso_net) |
| 2178 | return -ENODEV; |
| 2179 | |
| 2180 | for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) { |
| 2181 | if (hso_net->mux_bulk_rx_urb_pool[i]) |
| 2182 | usb_kill_urb(hso_net->mux_bulk_rx_urb_pool[i]); |
| 2183 | |
| 2184 | } |
| 2185 | if (hso_net->mux_bulk_tx_urb) |
| 2186 | usb_kill_urb(hso_net->mux_bulk_tx_urb); |
| 2187 | |
| 2188 | return 0; |
| 2189 | } |
| 2190 | |
| 2191 | static int hso_start_serial_device(struct hso_device *hso_dev, gfp_t flags) |
| 2192 | { |
| 2193 | int i, result = 0; |
| 2194 | struct hso_serial *serial = dev2ser(hso_dev); |
| 2195 | |
| 2196 | if (!serial) |
| 2197 | return -ENODEV; |
| 2198 | |
| 2199 | /* If it is not the MUX port fill in and submit a bulk urb (already |
| 2200 | * allocated in hso_serial_start) */ |
| 2201 | if (!(serial->parent->port_spec & HSO_INTF_MUX)) { |
| 2202 | for (i = 0; i < serial->num_rx_urbs; i++) { |
| 2203 | usb_fill_bulk_urb(serial->rx_urb[i], |
| 2204 | serial->parent->usb, |
| 2205 | usb_rcvbulkpipe(serial->parent->usb, |
| 2206 | serial->in_endp-> |
| 2207 | bEndpointAddress & |
| 2208 | 0x7F), |
| 2209 | serial->rx_data[i], |
| 2210 | serial->rx_data_length, |
| 2211 | hso_std_serial_read_bulk_callback, |
| 2212 | serial); |
| 2213 | result = usb_submit_urb(serial->rx_urb[i], flags); |
| 2214 | if (result) { |
| 2215 | dev_warn(&serial->parent->usb->dev, |
| 2216 | "Failed to submit urb - res %d\n", |
| 2217 | result); |
| 2218 | break; |
| 2219 | } |
| 2220 | } |
| 2221 | } else { |
| 2222 | mutex_lock(&serial->shared_int->shared_int_lock); |
| 2223 | if (!serial->shared_int->use_count) { |
| 2224 | result = |
| 2225 | hso_mux_submit_intr_urb(serial->shared_int, |
| 2226 | hso_dev->usb, flags); |
| 2227 | } |
| 2228 | serial->shared_int->use_count++; |
| 2229 | mutex_unlock(&serial->shared_int->shared_int_lock); |
| 2230 | } |
Denis Joseph Barrow | 542f548 | 2009-01-02 13:47:52 +0000 | [diff] [blame] | 2231 | if (serial->tiocmget) |
| 2232 | tiocmget_submit_urb(serial, |
| 2233 | serial->tiocmget, |
| 2234 | serial->parent->usb); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2235 | return result; |
| 2236 | } |
| 2237 | |
| 2238 | static int hso_stop_serial_device(struct hso_device *hso_dev) |
| 2239 | { |
| 2240 | int i; |
| 2241 | struct hso_serial *serial = dev2ser(hso_dev); |
Denis Joseph Barrow | 542f548 | 2009-01-02 13:47:52 +0000 | [diff] [blame] | 2242 | struct hso_tiocmget *tiocmget; |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2243 | |
| 2244 | if (!serial) |
| 2245 | return -ENODEV; |
| 2246 | |
| 2247 | for (i = 0; i < serial->num_rx_urbs; i++) { |
Denis Joseph Barrow | 8ef5ba6 | 2008-09-05 17:12:07 +0200 | [diff] [blame] | 2248 | if (serial->rx_urb[i]) { |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2249 | usb_kill_urb(serial->rx_urb[i]); |
Denis Joseph Barrow | 8ef5ba6 | 2008-09-05 17:12:07 +0200 | [diff] [blame] | 2250 | serial->rx_urb_filled[i] = 0; |
| 2251 | } |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2252 | } |
Denis Joseph Barrow | 8ef5ba6 | 2008-09-05 17:12:07 +0200 | [diff] [blame] | 2253 | serial->curr_rx_urb_idx = 0; |
| 2254 | serial->curr_rx_urb_offset = 0; |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2255 | |
| 2256 | if (serial->tx_urb) |
| 2257 | usb_kill_urb(serial->tx_urb); |
| 2258 | |
| 2259 | if (serial->shared_int) { |
| 2260 | mutex_lock(&serial->shared_int->shared_int_lock); |
| 2261 | if (serial->shared_int->use_count && |
| 2262 | (--serial->shared_int->use_count == 0)) { |
| 2263 | struct urb *urb; |
| 2264 | |
| 2265 | urb = serial->shared_int->shared_intr_urb; |
| 2266 | if (urb) |
| 2267 | usb_kill_urb(urb); |
| 2268 | } |
| 2269 | mutex_unlock(&serial->shared_int->shared_int_lock); |
| 2270 | } |
Denis Joseph Barrow | 542f548 | 2009-01-02 13:47:52 +0000 | [diff] [blame] | 2271 | tiocmget = serial->tiocmget; |
| 2272 | if (tiocmget) { |
| 2273 | wake_up_interruptible(&tiocmget->waitq); |
| 2274 | usb_kill_urb(tiocmget->urb); |
| 2275 | } |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2276 | |
| 2277 | return 0; |
| 2278 | } |
| 2279 | |
| 2280 | static void hso_serial_common_free(struct hso_serial *serial) |
| 2281 | { |
| 2282 | int i; |
| 2283 | |
| 2284 | if (serial->parent->dev) |
| 2285 | device_remove_file(serial->parent->dev, &dev_attr_hsotype); |
| 2286 | |
| 2287 | tty_unregister_device(tty_drv, serial->minor); |
| 2288 | |
| 2289 | for (i = 0; i < serial->num_rx_urbs; i++) { |
| 2290 | /* unlink and free RX URB */ |
| 2291 | usb_free_urb(serial->rx_urb[i]); |
| 2292 | /* free the RX buffer */ |
| 2293 | kfree(serial->rx_data[i]); |
| 2294 | } |
| 2295 | |
| 2296 | /* unlink and free TX URB */ |
| 2297 | usb_free_urb(serial->tx_urb); |
| 2298 | kfree(serial->tx_data); |
| 2299 | } |
| 2300 | |
| 2301 | static int hso_serial_common_create(struct hso_serial *serial, int num_urbs, |
| 2302 | int rx_size, int tx_size) |
| 2303 | { |
| 2304 | struct device *dev; |
| 2305 | int minor; |
| 2306 | int i; |
| 2307 | |
| 2308 | minor = get_free_serial_index(); |
| 2309 | if (minor < 0) |
| 2310 | goto exit; |
| 2311 | |
| 2312 | /* register our minor number */ |
| 2313 | serial->parent->dev = tty_register_device(tty_drv, minor, |
| 2314 | &serial->parent->interface->dev); |
| 2315 | dev = serial->parent->dev; |
Greg Kroah-Hartman | 1aec5bd | 2009-04-30 12:19:31 +0000 | [diff] [blame] | 2316 | dev_set_drvdata(dev, serial->parent); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2317 | i = device_create_file(dev, &dev_attr_hsotype); |
| 2318 | |
| 2319 | /* fill in specific data for later use */ |
| 2320 | serial->minor = minor; |
| 2321 | serial->magic = HSO_SERIAL_MAGIC; |
| 2322 | spin_lock_init(&serial->serial_lock); |
| 2323 | serial->num_rx_urbs = num_urbs; |
| 2324 | |
| 2325 | /* RX, allocate urb and initialize */ |
| 2326 | |
| 2327 | /* prepare our RX buffer */ |
| 2328 | serial->rx_data_length = rx_size; |
| 2329 | for (i = 0; i < serial->num_rx_urbs; i++) { |
| 2330 | serial->rx_urb[i] = usb_alloc_urb(0, GFP_KERNEL); |
| 2331 | if (!serial->rx_urb[i]) { |
| 2332 | dev_err(dev, "Could not allocate urb?\n"); |
| 2333 | goto exit; |
| 2334 | } |
| 2335 | serial->rx_urb[i]->transfer_buffer = NULL; |
| 2336 | serial->rx_urb[i]->transfer_buffer_length = 0; |
| 2337 | serial->rx_data[i] = kzalloc(serial->rx_data_length, |
| 2338 | GFP_KERNEL); |
| 2339 | if (!serial->rx_data[i]) { |
| 2340 | dev_err(dev, "%s - Out of memory\n", __func__); |
| 2341 | goto exit; |
| 2342 | } |
| 2343 | } |
| 2344 | |
| 2345 | /* TX, allocate urb and initialize */ |
| 2346 | serial->tx_urb = usb_alloc_urb(0, GFP_KERNEL); |
| 2347 | if (!serial->tx_urb) { |
| 2348 | dev_err(dev, "Could not allocate urb?\n"); |
| 2349 | goto exit; |
| 2350 | } |
| 2351 | serial->tx_urb->transfer_buffer = NULL; |
| 2352 | serial->tx_urb->transfer_buffer_length = 0; |
| 2353 | /* prepare our TX buffer */ |
| 2354 | serial->tx_data_count = 0; |
| 2355 | serial->tx_buffer_count = 0; |
| 2356 | serial->tx_data_length = tx_size; |
| 2357 | serial->tx_data = kzalloc(serial->tx_data_length, GFP_KERNEL); |
| 2358 | if (!serial->tx_data) { |
Jan Dumon | 8a5c9c4 | 2010-01-05 04:53:00 +0000 | [diff] [blame] | 2359 | dev_err(dev, "%s - Out of memory\n", __func__); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2360 | goto exit; |
| 2361 | } |
| 2362 | serial->tx_buffer = kzalloc(serial->tx_data_length, GFP_KERNEL); |
| 2363 | if (!serial->tx_buffer) { |
Jan Dumon | 8a5c9c4 | 2010-01-05 04:53:00 +0000 | [diff] [blame] | 2364 | dev_err(dev, "%s - Out of memory\n", __func__); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2365 | goto exit; |
| 2366 | } |
| 2367 | |
| 2368 | return 0; |
| 2369 | exit: |
| 2370 | hso_serial_common_free(serial); |
| 2371 | return -1; |
| 2372 | } |
| 2373 | |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2374 | /* Creates a general hso device */ |
| 2375 | static struct hso_device *hso_create_device(struct usb_interface *intf, |
| 2376 | int port_spec) |
| 2377 | { |
| 2378 | struct hso_device *hso_dev; |
| 2379 | |
| 2380 | hso_dev = kzalloc(sizeof(*hso_dev), GFP_ATOMIC); |
| 2381 | if (!hso_dev) |
| 2382 | return NULL; |
| 2383 | |
| 2384 | hso_dev->port_spec = port_spec; |
| 2385 | hso_dev->usb = interface_to_usbdev(intf); |
| 2386 | hso_dev->interface = intf; |
| 2387 | kref_init(&hso_dev->ref); |
David S. Miller | ab153d8 | 2008-11-25 03:52:46 -0800 | [diff] [blame] | 2388 | mutex_init(&hso_dev->mutex); |
| 2389 | |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2390 | INIT_WORK(&hso_dev->async_get_intf, async_get_intf); |
| 2391 | INIT_WORK(&hso_dev->async_put_intf, async_put_intf); |
Jan Dumon | 68a351c | 2010-01-05 04:52:13 +0000 | [diff] [blame] | 2392 | INIT_WORK(&hso_dev->reset_device, reset_device); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2393 | |
| 2394 | return hso_dev; |
| 2395 | } |
| 2396 | |
| 2397 | /* Removes a network device in the network device table */ |
| 2398 | static int remove_net_device(struct hso_device *hso_dev) |
| 2399 | { |
| 2400 | int i; |
| 2401 | |
| 2402 | for (i = 0; i < HSO_MAX_NET_DEVICES; i++) { |
| 2403 | if (network_table[i] == hso_dev) { |
| 2404 | network_table[i] = NULL; |
| 2405 | break; |
| 2406 | } |
| 2407 | } |
| 2408 | if (i == HSO_MAX_NET_DEVICES) |
| 2409 | return -1; |
| 2410 | return 0; |
| 2411 | } |
| 2412 | |
| 2413 | /* Frees our network device */ |
| 2414 | static void hso_free_net_device(struct hso_device *hso_dev) |
| 2415 | { |
| 2416 | int i; |
| 2417 | struct hso_net *hso_net = dev2net(hso_dev); |
| 2418 | |
| 2419 | if (!hso_net) |
| 2420 | return; |
| 2421 | |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2422 | remove_net_device(hso_net->parent); |
| 2423 | |
| 2424 | if (hso_net->net) { |
| 2425 | unregister_netdev(hso_net->net); |
| 2426 | free_netdev(hso_net->net); |
| 2427 | } |
David S. Miller | ab153d8 | 2008-11-25 03:52:46 -0800 | [diff] [blame] | 2428 | |
Jan Dumon | 3b7d2b3 | 2009-04-01 22:57:20 +0000 | [diff] [blame] | 2429 | /* start freeing */ |
| 2430 | for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) { |
| 2431 | usb_free_urb(hso_net->mux_bulk_rx_urb_pool[i]); |
| 2432 | kfree(hso_net->mux_bulk_rx_buf_pool[i]); |
| 2433 | hso_net->mux_bulk_rx_buf_pool[i] = NULL; |
| 2434 | } |
| 2435 | usb_free_urb(hso_net->mux_bulk_tx_urb); |
| 2436 | kfree(hso_net->mux_bulk_tx_buf); |
| 2437 | hso_net->mux_bulk_tx_buf = NULL; |
| 2438 | |
Paulius Zaleckas | e44578e | 2009-02-23 05:58:27 +0000 | [diff] [blame] | 2439 | kfree(hso_dev); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2440 | } |
| 2441 | |
Stephen Hemminger | c266cb4 | 2009-03-20 19:35:52 +0000 | [diff] [blame] | 2442 | static const struct net_device_ops hso_netdev_ops = { |
| 2443 | .ndo_open = hso_net_open, |
| 2444 | .ndo_stop = hso_net_close, |
| 2445 | .ndo_start_xmit = hso_net_start_xmit, |
| 2446 | .ndo_tx_timeout = hso_net_tx_timeout, |
| 2447 | }; |
| 2448 | |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2449 | /* initialize the network interface */ |
| 2450 | static void hso_net_init(struct net_device *net) |
| 2451 | { |
| 2452 | struct hso_net *hso_net = netdev_priv(net); |
| 2453 | |
| 2454 | D1("sizeof hso_net is %d", (int)sizeof(*hso_net)); |
| 2455 | |
| 2456 | /* fill in the other fields */ |
Stephen Hemminger | c266cb4 | 2009-03-20 19:35:52 +0000 | [diff] [blame] | 2457 | net->netdev_ops = &hso_netdev_ops; |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2458 | net->watchdog_timeo = HSO_NET_TX_TIMEOUT; |
| 2459 | net->flags = IFF_POINTOPOINT | IFF_NOARP | IFF_MULTICAST; |
| 2460 | net->type = ARPHRD_NONE; |
| 2461 | net->mtu = DEFAULT_MTU - 14; |
| 2462 | net->tx_queue_len = 10; |
| 2463 | SET_ETHTOOL_OPS(net, &ops); |
| 2464 | |
| 2465 | /* and initialize the semaphore */ |
| 2466 | spin_lock_init(&hso_net->net_lock); |
| 2467 | } |
| 2468 | |
| 2469 | /* Adds a network device in the network device table */ |
| 2470 | static int add_net_device(struct hso_device *hso_dev) |
| 2471 | { |
| 2472 | int i; |
| 2473 | |
| 2474 | for (i = 0; i < HSO_MAX_NET_DEVICES; i++) { |
| 2475 | if (network_table[i] == NULL) { |
| 2476 | network_table[i] = hso_dev; |
| 2477 | break; |
| 2478 | } |
| 2479 | } |
| 2480 | if (i == HSO_MAX_NET_DEVICES) |
| 2481 | return -1; |
| 2482 | return 0; |
| 2483 | } |
| 2484 | |
Johannes Berg | 19d337d | 2009-06-02 13:01:37 +0200 | [diff] [blame] | 2485 | static int hso_rfkill_set_block(void *data, bool blocked) |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2486 | { |
| 2487 | struct hso_device *hso_dev = data; |
Johannes Berg | 19d337d | 2009-06-02 13:01:37 +0200 | [diff] [blame] | 2488 | int enabled = !blocked; |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2489 | int rv; |
| 2490 | |
David S. Miller | ab153d8 | 2008-11-25 03:52:46 -0800 | [diff] [blame] | 2491 | mutex_lock(&hso_dev->mutex); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2492 | if (hso_dev->usb_gone) |
| 2493 | rv = 0; |
| 2494 | else |
| 2495 | rv = usb_control_msg(hso_dev->usb, usb_rcvctrlpipe(hso_dev->usb, 0), |
| 2496 | enabled ? 0x82 : 0x81, 0x40, 0, 0, NULL, 0, |
| 2497 | USB_CTRL_SET_TIMEOUT); |
David S. Miller | ab153d8 | 2008-11-25 03:52:46 -0800 | [diff] [blame] | 2498 | mutex_unlock(&hso_dev->mutex); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2499 | return rv; |
| 2500 | } |
| 2501 | |
Johannes Berg | 19d337d | 2009-06-02 13:01:37 +0200 | [diff] [blame] | 2502 | static const struct rfkill_ops hso_rfkill_ops = { |
| 2503 | .set_block = hso_rfkill_set_block, |
| 2504 | }; |
| 2505 | |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2506 | /* Creates and sets up everything for rfkill */ |
| 2507 | static void hso_create_rfkill(struct hso_device *hso_dev, |
| 2508 | struct usb_interface *interface) |
| 2509 | { |
| 2510 | struct hso_net *hso_net = dev2net(hso_dev); |
Jonathan McDowell | 939a951 | 2008-11-04 07:51:38 +0000 | [diff] [blame] | 2511 | struct device *dev = &hso_net->net->dev; |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2512 | char *rfkn; |
| 2513 | |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2514 | rfkn = kzalloc(20, GFP_KERNEL); |
Johannes Berg | 19d337d | 2009-06-02 13:01:37 +0200 | [diff] [blame] | 2515 | if (!rfkn) |
Jonathan McDowell | 939a951 | 2008-11-04 07:51:38 +0000 | [diff] [blame] | 2516 | dev_err(dev, "%s - Out of memory\n", __func__); |
Johannes Berg | 19d337d | 2009-06-02 13:01:37 +0200 | [diff] [blame] | 2517 | |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2518 | snprintf(rfkn, 20, "hso-%d", |
| 2519 | interface->altsetting->desc.bInterfaceNumber); |
Johannes Berg | 19d337d | 2009-06-02 13:01:37 +0200 | [diff] [blame] | 2520 | |
| 2521 | hso_net->rfkill = rfkill_alloc(rfkn, |
| 2522 | &interface_to_usbdev(interface)->dev, |
| 2523 | RFKILL_TYPE_WWAN, |
| 2524 | &hso_rfkill_ops, hso_dev); |
| 2525 | if (!hso_net->rfkill) { |
| 2526 | dev_err(dev, "%s - Out of memory\n", __func__); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2527 | kfree(rfkn); |
Johannes Berg | 19d337d | 2009-06-02 13:01:37 +0200 | [diff] [blame] | 2528 | return; |
| 2529 | } |
| 2530 | if (rfkill_register(hso_net->rfkill) < 0) { |
| 2531 | rfkill_destroy(hso_net->rfkill); |
| 2532 | kfree(rfkn); |
Jonathan McDowell | 939a951 | 2008-11-04 07:51:38 +0000 | [diff] [blame] | 2533 | hso_net->rfkill = NULL; |
| 2534 | dev_err(dev, "%s - Failed to register rfkill\n", __func__); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2535 | return; |
| 2536 | } |
| 2537 | } |
| 2538 | |
Marcel Holtmann | 384912e | 2009-08-31 21:08:19 +0000 | [diff] [blame] | 2539 | static struct device_type hso_type = { |
| 2540 | .name = "wwan", |
| 2541 | }; |
| 2542 | |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2543 | /* Creates our network device */ |
Jan Dumon | 0de8ca5 | 2009-04-01 22:59:07 +0000 | [diff] [blame] | 2544 | static struct hso_device *hso_create_net_device(struct usb_interface *interface, |
| 2545 | int port_spec) |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2546 | { |
| 2547 | int result, i; |
| 2548 | struct net_device *net; |
| 2549 | struct hso_net *hso_net; |
| 2550 | struct hso_device *hso_dev; |
| 2551 | |
Jan Dumon | 0de8ca5 | 2009-04-01 22:59:07 +0000 | [diff] [blame] | 2552 | hso_dev = hso_create_device(interface, port_spec); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2553 | if (!hso_dev) |
| 2554 | return NULL; |
| 2555 | |
| 2556 | /* allocate our network device, then we can put in our private data */ |
| 2557 | /* call hso_net_init to do the basic initialization */ |
| 2558 | net = alloc_netdev(sizeof(struct hso_net), "hso%d", hso_net_init); |
| 2559 | if (!net) { |
| 2560 | dev_err(&interface->dev, "Unable to create ethernet device\n"); |
| 2561 | goto exit; |
| 2562 | } |
| 2563 | |
| 2564 | hso_net = netdev_priv(net); |
| 2565 | |
| 2566 | hso_dev->port_data.dev_net = hso_net; |
| 2567 | hso_net->net = net; |
| 2568 | hso_net->parent = hso_dev; |
| 2569 | |
| 2570 | hso_net->in_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK, |
| 2571 | USB_DIR_IN); |
| 2572 | if (!hso_net->in_endp) { |
| 2573 | dev_err(&interface->dev, "Can't find BULK IN endpoint\n"); |
| 2574 | goto exit; |
| 2575 | } |
| 2576 | hso_net->out_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK, |
| 2577 | USB_DIR_OUT); |
| 2578 | if (!hso_net->out_endp) { |
| 2579 | dev_err(&interface->dev, "Can't find BULK OUT endpoint\n"); |
| 2580 | goto exit; |
| 2581 | } |
| 2582 | SET_NETDEV_DEV(net, &interface->dev); |
Marcel Holtmann | 384912e | 2009-08-31 21:08:19 +0000 | [diff] [blame] | 2583 | SET_NETDEV_DEVTYPE(net, &hso_type); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2584 | |
| 2585 | /* registering our net device */ |
| 2586 | result = register_netdev(net); |
| 2587 | if (result) { |
| 2588 | dev_err(&interface->dev, "Failed to register device\n"); |
| 2589 | goto exit; |
| 2590 | } |
| 2591 | |
| 2592 | /* start allocating */ |
| 2593 | for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) { |
| 2594 | hso_net->mux_bulk_rx_urb_pool[i] = usb_alloc_urb(0, GFP_KERNEL); |
| 2595 | if (!hso_net->mux_bulk_rx_urb_pool[i]) { |
| 2596 | dev_err(&interface->dev, "Could not allocate rx urb\n"); |
| 2597 | goto exit; |
| 2598 | } |
| 2599 | hso_net->mux_bulk_rx_buf_pool[i] = kzalloc(MUX_BULK_RX_BUF_SIZE, |
| 2600 | GFP_KERNEL); |
| 2601 | if (!hso_net->mux_bulk_rx_buf_pool[i]) { |
| 2602 | dev_err(&interface->dev, "Could not allocate rx buf\n"); |
| 2603 | goto exit; |
| 2604 | } |
| 2605 | } |
| 2606 | hso_net->mux_bulk_tx_urb = usb_alloc_urb(0, GFP_KERNEL); |
| 2607 | if (!hso_net->mux_bulk_tx_urb) { |
| 2608 | dev_err(&interface->dev, "Could not allocate tx urb\n"); |
| 2609 | goto exit; |
| 2610 | } |
| 2611 | hso_net->mux_bulk_tx_buf = kzalloc(MUX_BULK_TX_BUF_SIZE, GFP_KERNEL); |
| 2612 | if (!hso_net->mux_bulk_tx_buf) { |
| 2613 | dev_err(&interface->dev, "Could not allocate tx buf\n"); |
| 2614 | goto exit; |
| 2615 | } |
| 2616 | |
| 2617 | add_net_device(hso_dev); |
| 2618 | |
| 2619 | hso_log_port(hso_dev); |
| 2620 | |
| 2621 | hso_create_rfkill(hso_dev, interface); |
| 2622 | |
| 2623 | return hso_dev; |
| 2624 | exit: |
| 2625 | hso_free_net_device(hso_dev); |
| 2626 | return NULL; |
| 2627 | } |
| 2628 | |
Denis Joseph Barrow | 542f548 | 2009-01-02 13:47:52 +0000 | [diff] [blame] | 2629 | static void hso_free_tiomget(struct hso_serial *serial) |
| 2630 | { |
Jesper Juhl | 5b89db0e | 2011-02-13 11:15:35 +0000 | [diff] [blame] | 2631 | struct hso_tiocmget *tiocmget; |
| 2632 | if (!serial) |
| 2633 | return; |
| 2634 | tiocmget = serial->tiocmget; |
Denis Joseph Barrow | 542f548 | 2009-01-02 13:47:52 +0000 | [diff] [blame] | 2635 | if (tiocmget) { |
Jesper Juhl | 5b89db0e | 2011-02-13 11:15:35 +0000 | [diff] [blame] | 2636 | usb_free_urb(tiocmget->urb); |
| 2637 | tiocmget->urb = NULL; |
Denis Joseph Barrow | 542f548 | 2009-01-02 13:47:52 +0000 | [diff] [blame] | 2638 | serial->tiocmget = NULL; |
Jan Dumon | 3b7d2b3 | 2009-04-01 22:57:20 +0000 | [diff] [blame] | 2639 | kfree(tiocmget); |
Denis Joseph Barrow | 542f548 | 2009-01-02 13:47:52 +0000 | [diff] [blame] | 2640 | } |
| 2641 | } |
| 2642 | |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2643 | /* Frees an AT channel ( goes for both mux and non-mux ) */ |
| 2644 | static void hso_free_serial_device(struct hso_device *hso_dev) |
| 2645 | { |
| 2646 | struct hso_serial *serial = dev2ser(hso_dev); |
| 2647 | |
| 2648 | if (!serial) |
| 2649 | return; |
| 2650 | set_serial_by_index(serial->minor, NULL); |
| 2651 | |
| 2652 | hso_serial_common_free(serial); |
| 2653 | |
| 2654 | if (serial->shared_int) { |
| 2655 | mutex_lock(&serial->shared_int->shared_int_lock); |
| 2656 | if (--serial->shared_int->ref_count == 0) |
| 2657 | hso_free_shared_int(serial->shared_int); |
| 2658 | else |
| 2659 | mutex_unlock(&serial->shared_int->shared_int_lock); |
| 2660 | } |
Denis Joseph Barrow | 542f548 | 2009-01-02 13:47:52 +0000 | [diff] [blame] | 2661 | hso_free_tiomget(serial); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2662 | kfree(serial); |
Paulius Zaleckas | e44578e | 2009-02-23 05:58:27 +0000 | [diff] [blame] | 2663 | kfree(hso_dev); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2664 | } |
| 2665 | |
| 2666 | /* Creates a bulk AT channel */ |
| 2667 | static struct hso_device *hso_create_bulk_serial_device( |
| 2668 | struct usb_interface *interface, int port) |
| 2669 | { |
| 2670 | struct hso_device *hso_dev; |
| 2671 | struct hso_serial *serial; |
| 2672 | int num_urbs; |
Denis Joseph Barrow | 542f548 | 2009-01-02 13:47:52 +0000 | [diff] [blame] | 2673 | struct hso_tiocmget *tiocmget; |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2674 | |
| 2675 | hso_dev = hso_create_device(interface, port); |
| 2676 | if (!hso_dev) |
| 2677 | return NULL; |
| 2678 | |
| 2679 | serial = kzalloc(sizeof(*serial), GFP_KERNEL); |
| 2680 | if (!serial) |
| 2681 | goto exit; |
| 2682 | |
| 2683 | serial->parent = hso_dev; |
| 2684 | hso_dev->port_data.dev_serial = serial; |
| 2685 | |
Denis Joseph Barrow | 58eb17f | 2009-01-02 13:50:29 +0000 | [diff] [blame] | 2686 | if ((port & HSO_PORT_MASK) == HSO_PORT_MODEM) { |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2687 | num_urbs = 2; |
Denis Joseph Barrow | 542f548 | 2009-01-02 13:47:52 +0000 | [diff] [blame] | 2688 | serial->tiocmget = kzalloc(sizeof(struct hso_tiocmget), |
| 2689 | GFP_KERNEL); |
| 2690 | /* it isn't going to break our heart if serial->tiocmget |
| 2691 | * allocation fails don't bother checking this. |
| 2692 | */ |
| 2693 | if (serial->tiocmget) { |
| 2694 | tiocmget = serial->tiocmget; |
| 2695 | tiocmget->urb = usb_alloc_urb(0, GFP_KERNEL); |
| 2696 | if (tiocmget->urb) { |
| 2697 | mutex_init(&tiocmget->mutex); |
| 2698 | init_waitqueue_head(&tiocmget->waitq); |
| 2699 | tiocmget->endp = hso_get_ep( |
| 2700 | interface, |
| 2701 | USB_ENDPOINT_XFER_INT, |
| 2702 | USB_DIR_IN); |
| 2703 | } else |
| 2704 | hso_free_tiomget(serial); |
| 2705 | } |
| 2706 | } |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2707 | else |
| 2708 | num_urbs = 1; |
| 2709 | |
| 2710 | if (hso_serial_common_create(serial, num_urbs, BULK_URB_RX_SIZE, |
| 2711 | BULK_URB_TX_SIZE)) |
| 2712 | goto exit; |
| 2713 | |
| 2714 | serial->in_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK, |
| 2715 | USB_DIR_IN); |
| 2716 | if (!serial->in_endp) { |
| 2717 | dev_err(&interface->dev, "Failed to find BULK IN ep\n"); |
Adrian Bunk | e57b641 | 2008-08-28 01:02:37 +0300 | [diff] [blame] | 2718 | goto exit2; |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2719 | } |
| 2720 | |
| 2721 | if (! |
| 2722 | (serial->out_endp = |
| 2723 | hso_get_ep(interface, USB_ENDPOINT_XFER_BULK, USB_DIR_OUT))) { |
| 2724 | dev_err(&interface->dev, "Failed to find BULK IN ep\n"); |
Adrian Bunk | e57b641 | 2008-08-28 01:02:37 +0300 | [diff] [blame] | 2725 | goto exit2; |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2726 | } |
| 2727 | |
| 2728 | serial->write_data = hso_std_serial_write_data; |
| 2729 | |
| 2730 | /* and record this serial */ |
| 2731 | set_serial_by_index(serial->minor, serial); |
| 2732 | |
| 2733 | /* setup the proc dirs and files if needed */ |
| 2734 | hso_log_port(hso_dev); |
| 2735 | |
| 2736 | /* done, return it */ |
| 2737 | return hso_dev; |
Adrian Bunk | e57b641 | 2008-08-28 01:02:37 +0300 | [diff] [blame] | 2738 | |
| 2739 | exit2: |
| 2740 | hso_serial_common_free(serial); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2741 | exit: |
Denis Joseph Barrow | 542f548 | 2009-01-02 13:47:52 +0000 | [diff] [blame] | 2742 | hso_free_tiomget(serial); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2743 | kfree(serial); |
Paulius Zaleckas | e44578e | 2009-02-23 05:58:27 +0000 | [diff] [blame] | 2744 | kfree(hso_dev); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2745 | return NULL; |
| 2746 | } |
| 2747 | |
| 2748 | /* Creates a multiplexed AT channel */ |
| 2749 | static |
| 2750 | struct hso_device *hso_create_mux_serial_device(struct usb_interface *interface, |
| 2751 | int port, |
| 2752 | struct hso_shared_int *mux) |
| 2753 | { |
| 2754 | struct hso_device *hso_dev; |
| 2755 | struct hso_serial *serial; |
| 2756 | int port_spec; |
| 2757 | |
| 2758 | port_spec = HSO_INTF_MUX; |
| 2759 | port_spec &= ~HSO_PORT_MASK; |
| 2760 | |
| 2761 | port_spec |= hso_mux_to_port(port); |
| 2762 | if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NO_PORT) |
| 2763 | return NULL; |
| 2764 | |
| 2765 | hso_dev = hso_create_device(interface, port_spec); |
| 2766 | if (!hso_dev) |
| 2767 | return NULL; |
| 2768 | |
| 2769 | serial = kzalloc(sizeof(*serial), GFP_KERNEL); |
| 2770 | if (!serial) |
| 2771 | goto exit; |
| 2772 | |
| 2773 | hso_dev->port_data.dev_serial = serial; |
| 2774 | serial->parent = hso_dev; |
| 2775 | |
| 2776 | if (hso_serial_common_create |
| 2777 | (serial, 1, CTRL_URB_RX_SIZE, CTRL_URB_TX_SIZE)) |
| 2778 | goto exit; |
| 2779 | |
| 2780 | serial->tx_data_length--; |
| 2781 | serial->write_data = hso_mux_serial_write_data; |
| 2782 | |
| 2783 | serial->shared_int = mux; |
| 2784 | mutex_lock(&serial->shared_int->shared_int_lock); |
| 2785 | serial->shared_int->ref_count++; |
| 2786 | mutex_unlock(&serial->shared_int->shared_int_lock); |
| 2787 | |
| 2788 | /* and record this serial */ |
| 2789 | set_serial_by_index(serial->minor, serial); |
| 2790 | |
| 2791 | /* setup the proc dirs and files if needed */ |
| 2792 | hso_log_port(hso_dev); |
| 2793 | |
| 2794 | /* done, return it */ |
| 2795 | return hso_dev; |
| 2796 | |
| 2797 | exit: |
| 2798 | if (serial) { |
| 2799 | tty_unregister_device(tty_drv, serial->minor); |
| 2800 | kfree(serial); |
| 2801 | } |
| 2802 | if (hso_dev) |
Paulius Zaleckas | e44578e | 2009-02-23 05:58:27 +0000 | [diff] [blame] | 2803 | kfree(hso_dev); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2804 | return NULL; |
| 2805 | |
| 2806 | } |
| 2807 | |
| 2808 | static void hso_free_shared_int(struct hso_shared_int *mux) |
| 2809 | { |
| 2810 | usb_free_urb(mux->shared_intr_urb); |
| 2811 | kfree(mux->shared_intr_buf); |
| 2812 | mutex_unlock(&mux->shared_int_lock); |
| 2813 | kfree(mux); |
| 2814 | } |
| 2815 | |
| 2816 | static |
| 2817 | struct hso_shared_int *hso_create_shared_int(struct usb_interface *interface) |
| 2818 | { |
| 2819 | struct hso_shared_int *mux = kzalloc(sizeof(*mux), GFP_KERNEL); |
| 2820 | |
| 2821 | if (!mux) |
| 2822 | return NULL; |
| 2823 | |
| 2824 | mux->intr_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_INT, |
| 2825 | USB_DIR_IN); |
| 2826 | if (!mux->intr_endp) { |
| 2827 | dev_err(&interface->dev, "Can't find INT IN endpoint\n"); |
| 2828 | goto exit; |
| 2829 | } |
| 2830 | |
| 2831 | mux->shared_intr_urb = usb_alloc_urb(0, GFP_KERNEL); |
| 2832 | if (!mux->shared_intr_urb) { |
Jan Dumon | 8a5c9c4 | 2010-01-05 04:53:00 +0000 | [diff] [blame] | 2833 | dev_err(&interface->dev, "Could not allocate intr urb?\n"); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2834 | goto exit; |
| 2835 | } |
Jan Dumon | d9ced80 | 2010-01-05 04:51:02 +0000 | [diff] [blame] | 2836 | mux->shared_intr_buf = |
| 2837 | kzalloc(le16_to_cpu(mux->intr_endp->wMaxPacketSize), |
| 2838 | GFP_KERNEL); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2839 | if (!mux->shared_intr_buf) { |
Jan Dumon | 8a5c9c4 | 2010-01-05 04:53:00 +0000 | [diff] [blame] | 2840 | dev_err(&interface->dev, "Could not allocate intr buf?\n"); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2841 | goto exit; |
| 2842 | } |
| 2843 | |
| 2844 | mutex_init(&mux->shared_int_lock); |
| 2845 | |
| 2846 | return mux; |
| 2847 | |
| 2848 | exit: |
| 2849 | kfree(mux->shared_intr_buf); |
| 2850 | usb_free_urb(mux->shared_intr_urb); |
| 2851 | kfree(mux); |
| 2852 | return NULL; |
| 2853 | } |
| 2854 | |
| 2855 | /* Gets the port spec for a certain interface */ |
| 2856 | static int hso_get_config_data(struct usb_interface *interface) |
| 2857 | { |
| 2858 | struct usb_device *usbdev = interface_to_usbdev(interface); |
| 2859 | u8 config_data[17]; |
| 2860 | u32 if_num = interface->altsetting->desc.bInterfaceNumber; |
| 2861 | s32 result; |
| 2862 | |
| 2863 | if (usb_control_msg(usbdev, usb_rcvctrlpipe(usbdev, 0), |
| 2864 | 0x86, 0xC0, 0, 0, config_data, 17, |
| 2865 | USB_CTRL_SET_TIMEOUT) != 0x11) { |
| 2866 | return -EIO; |
| 2867 | } |
| 2868 | |
| 2869 | switch (config_data[if_num]) { |
| 2870 | case 0x0: |
| 2871 | result = 0; |
| 2872 | break; |
| 2873 | case 0x1: |
| 2874 | result = HSO_PORT_DIAG; |
| 2875 | break; |
| 2876 | case 0x2: |
| 2877 | result = HSO_PORT_GPS; |
| 2878 | break; |
| 2879 | case 0x3: |
| 2880 | result = HSO_PORT_GPS_CONTROL; |
| 2881 | break; |
| 2882 | case 0x4: |
| 2883 | result = HSO_PORT_APP; |
| 2884 | break; |
| 2885 | case 0x5: |
| 2886 | result = HSO_PORT_APP2; |
| 2887 | break; |
| 2888 | case 0x6: |
| 2889 | result = HSO_PORT_CONTROL; |
| 2890 | break; |
| 2891 | case 0x7: |
| 2892 | result = HSO_PORT_NETWORK; |
| 2893 | break; |
| 2894 | case 0x8: |
| 2895 | result = HSO_PORT_MODEM; |
| 2896 | break; |
| 2897 | case 0x9: |
| 2898 | result = HSO_PORT_MSD; |
| 2899 | break; |
| 2900 | case 0xa: |
| 2901 | result = HSO_PORT_PCSC; |
| 2902 | break; |
| 2903 | case 0xb: |
| 2904 | result = HSO_PORT_VOICE; |
| 2905 | break; |
| 2906 | default: |
| 2907 | result = 0; |
| 2908 | } |
| 2909 | |
| 2910 | if (result) |
| 2911 | result |= HSO_INTF_BULK; |
| 2912 | |
| 2913 | if (config_data[16] & 0x1) |
| 2914 | result |= HSO_INFO_CRC_BUG; |
| 2915 | |
| 2916 | return result; |
| 2917 | } |
| 2918 | |
| 2919 | /* called once for each interface upon device insertion */ |
| 2920 | static int hso_probe(struct usb_interface *interface, |
| 2921 | const struct usb_device_id *id) |
| 2922 | { |
| 2923 | int mux, i, if_num, port_spec; |
| 2924 | unsigned char port_mask; |
| 2925 | struct hso_device *hso_dev = NULL; |
| 2926 | struct hso_shared_int *shared_int; |
| 2927 | struct hso_device *tmp_dev = NULL; |
| 2928 | |
| 2929 | if_num = interface->altsetting->desc.bInterfaceNumber; |
| 2930 | |
| 2931 | /* Get the interface/port specification from either driver_info or from |
| 2932 | * the device itself */ |
| 2933 | if (id->driver_info) |
| 2934 | port_spec = ((u32 *)(id->driver_info))[if_num]; |
| 2935 | else |
| 2936 | port_spec = hso_get_config_data(interface); |
| 2937 | |
| 2938 | if (interface->cur_altsetting->desc.bInterfaceClass != 0xFF) { |
| 2939 | dev_err(&interface->dev, "Not our interface\n"); |
| 2940 | return -ENODEV; |
| 2941 | } |
| 2942 | /* Check if we need to switch to alt interfaces prior to port |
| 2943 | * configuration */ |
| 2944 | if (interface->num_altsetting > 1) |
| 2945 | usb_set_interface(interface_to_usbdev(interface), if_num, 1); |
| 2946 | interface->needs_remote_wakeup = 1; |
| 2947 | |
| 2948 | /* Allocate new hso device(s) */ |
| 2949 | switch (port_spec & HSO_INTF_MASK) { |
| 2950 | case HSO_INTF_MUX: |
| 2951 | if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) { |
| 2952 | /* Create the network device */ |
| 2953 | if (!disable_net) { |
Jan Dumon | 0de8ca5 | 2009-04-01 22:59:07 +0000 | [diff] [blame] | 2954 | hso_dev = hso_create_net_device(interface, |
| 2955 | port_spec); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2956 | if (!hso_dev) |
| 2957 | goto exit; |
| 2958 | tmp_dev = hso_dev; |
| 2959 | } |
| 2960 | } |
| 2961 | |
| 2962 | if (hso_get_mux_ports(interface, &port_mask)) |
| 2963 | /* TODO: de-allocate everything */ |
| 2964 | goto exit; |
| 2965 | |
| 2966 | shared_int = hso_create_shared_int(interface); |
| 2967 | if (!shared_int) |
| 2968 | goto exit; |
| 2969 | |
| 2970 | for (i = 1, mux = 0; i < 0x100; i = i << 1, mux++) { |
| 2971 | if (port_mask & i) { |
| 2972 | hso_dev = hso_create_mux_serial_device( |
| 2973 | interface, i, shared_int); |
| 2974 | if (!hso_dev) |
| 2975 | goto exit; |
| 2976 | } |
| 2977 | } |
| 2978 | |
| 2979 | if (tmp_dev) |
| 2980 | hso_dev = tmp_dev; |
| 2981 | break; |
| 2982 | |
| 2983 | case HSO_INTF_BULK: |
| 2984 | /* It's a regular bulk interface */ |
Filip Aben | 8e65c0e | 2010-11-25 03:40:50 +0000 | [diff] [blame] | 2985 | if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) { |
| 2986 | if (!disable_net) |
| 2987 | hso_dev = |
| 2988 | hso_create_net_device(interface, port_spec); |
| 2989 | } else { |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2990 | hso_dev = |
| 2991 | hso_create_bulk_serial_device(interface, port_spec); |
Filip Aben | 8e65c0e | 2010-11-25 03:40:50 +0000 | [diff] [blame] | 2992 | } |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 2993 | if (!hso_dev) |
| 2994 | goto exit; |
| 2995 | break; |
| 2996 | default: |
| 2997 | goto exit; |
| 2998 | } |
| 2999 | |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 3000 | /* save our data pointer in this device */ |
| 3001 | usb_set_intfdata(interface, hso_dev); |
| 3002 | |
| 3003 | /* done */ |
| 3004 | return 0; |
| 3005 | exit: |
| 3006 | hso_free_interface(interface); |
| 3007 | return -ENODEV; |
| 3008 | } |
| 3009 | |
| 3010 | /* device removed, cleaning up */ |
| 3011 | static void hso_disconnect(struct usb_interface *interface) |
| 3012 | { |
| 3013 | hso_free_interface(interface); |
| 3014 | |
| 3015 | /* remove reference of our private data */ |
| 3016 | usb_set_intfdata(interface, NULL); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 3017 | } |
| 3018 | |
| 3019 | static void async_get_intf(struct work_struct *data) |
| 3020 | { |
| 3021 | struct hso_device *hso_dev = |
| 3022 | container_of(data, struct hso_device, async_get_intf); |
| 3023 | usb_autopm_get_interface(hso_dev->interface); |
| 3024 | } |
| 3025 | |
| 3026 | static void async_put_intf(struct work_struct *data) |
| 3027 | { |
| 3028 | struct hso_device *hso_dev = |
| 3029 | container_of(data, struct hso_device, async_put_intf); |
| 3030 | usb_autopm_put_interface(hso_dev->interface); |
| 3031 | } |
| 3032 | |
| 3033 | static int hso_get_activity(struct hso_device *hso_dev) |
| 3034 | { |
| 3035 | if (hso_dev->usb->state == USB_STATE_SUSPENDED) { |
| 3036 | if (!hso_dev->is_active) { |
| 3037 | hso_dev->is_active = 1; |
| 3038 | schedule_work(&hso_dev->async_get_intf); |
| 3039 | } |
| 3040 | } |
| 3041 | |
| 3042 | if (hso_dev->usb->state != USB_STATE_CONFIGURED) |
| 3043 | return -EAGAIN; |
| 3044 | |
| 3045 | usb_mark_last_busy(hso_dev->usb); |
| 3046 | |
| 3047 | return 0; |
| 3048 | } |
| 3049 | |
| 3050 | static int hso_put_activity(struct hso_device *hso_dev) |
| 3051 | { |
| 3052 | if (hso_dev->usb->state != USB_STATE_SUSPENDED) { |
| 3053 | if (hso_dev->is_active) { |
| 3054 | hso_dev->is_active = 0; |
| 3055 | schedule_work(&hso_dev->async_put_intf); |
| 3056 | return -EAGAIN; |
| 3057 | } |
| 3058 | } |
| 3059 | hso_dev->is_active = 0; |
| 3060 | return 0; |
| 3061 | } |
| 3062 | |
| 3063 | /* called by kernel when we need to suspend device */ |
| 3064 | static int hso_suspend(struct usb_interface *iface, pm_message_t message) |
| 3065 | { |
| 3066 | int i, result; |
| 3067 | |
| 3068 | /* Stop all serial ports */ |
| 3069 | for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) { |
| 3070 | if (serial_table[i] && (serial_table[i]->interface == iface)) { |
| 3071 | result = hso_stop_serial_device(serial_table[i]); |
| 3072 | if (result) |
| 3073 | goto out; |
| 3074 | } |
| 3075 | } |
| 3076 | |
| 3077 | /* Stop all network ports */ |
| 3078 | for (i = 0; i < HSO_MAX_NET_DEVICES; i++) { |
| 3079 | if (network_table[i] && |
| 3080 | (network_table[i]->interface == iface)) { |
| 3081 | result = hso_stop_net_device(network_table[i]); |
| 3082 | if (result) |
| 3083 | goto out; |
| 3084 | } |
| 3085 | } |
| 3086 | |
| 3087 | out: |
| 3088 | return 0; |
| 3089 | } |
| 3090 | |
| 3091 | /* called by kernel when we need to resume device */ |
| 3092 | static int hso_resume(struct usb_interface *iface) |
| 3093 | { |
| 3094 | int i, result = 0; |
| 3095 | struct hso_net *hso_net; |
| 3096 | |
| 3097 | /* Start all serial ports */ |
| 3098 | for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) { |
| 3099 | if (serial_table[i] && (serial_table[i]->interface == iface)) { |
| 3100 | if (dev2ser(serial_table[i])->open_count) { |
| 3101 | result = |
| 3102 | hso_start_serial_device(serial_table[i], GFP_NOIO); |
| 3103 | hso_kick_transmit(dev2ser(serial_table[i])); |
| 3104 | if (result) |
| 3105 | goto out; |
| 3106 | } |
| 3107 | } |
| 3108 | } |
| 3109 | |
| 3110 | /* Start all network ports */ |
| 3111 | for (i = 0; i < HSO_MAX_NET_DEVICES; i++) { |
| 3112 | if (network_table[i] && |
| 3113 | (network_table[i]->interface == iface)) { |
| 3114 | hso_net = dev2net(network_table[i]); |
Denis Joseph Barrow | 89930b7 | 2008-11-25 00:30:48 -0800 | [diff] [blame] | 3115 | if (hso_net->flags & IFF_UP) { |
| 3116 | /* First transmit any lingering data, |
| 3117 | then restart the device. */ |
| 3118 | if (hso_net->skb_tx_buf) { |
| 3119 | dev_dbg(&iface->dev, |
| 3120 | "Transmitting" |
| 3121 | " lingering data\n"); |
| 3122 | hso_net_start_xmit(hso_net->skb_tx_buf, |
| 3123 | hso_net->net); |
| 3124 | hso_net->skb_tx_buf = NULL; |
| 3125 | } |
| 3126 | result = hso_start_net_device(network_table[i]); |
| 3127 | if (result) |
| 3128 | goto out; |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 3129 | } |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 3130 | } |
| 3131 | } |
| 3132 | |
| 3133 | out: |
| 3134 | return result; |
| 3135 | } |
| 3136 | |
Jan Dumon | 68a351c | 2010-01-05 04:52:13 +0000 | [diff] [blame] | 3137 | static void reset_device(struct work_struct *data) |
| 3138 | { |
| 3139 | struct hso_device *hso_dev = |
| 3140 | container_of(data, struct hso_device, reset_device); |
| 3141 | struct usb_device *usb = hso_dev->usb; |
| 3142 | int result; |
| 3143 | |
| 3144 | if (hso_dev->usb_gone) { |
| 3145 | D1("No reset during disconnect\n"); |
| 3146 | } else { |
| 3147 | result = usb_lock_device_for_reset(usb, hso_dev->interface); |
| 3148 | if (result < 0) |
| 3149 | D1("unable to lock device for reset: %d\n", result); |
| 3150 | else { |
| 3151 | usb_reset_device(usb); |
| 3152 | usb_unlock_device(usb); |
| 3153 | } |
| 3154 | } |
| 3155 | } |
| 3156 | |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 3157 | static void hso_serial_ref_free(struct kref *ref) |
| 3158 | { |
| 3159 | struct hso_device *hso_dev = container_of(ref, struct hso_device, ref); |
| 3160 | |
| 3161 | hso_free_serial_device(hso_dev); |
| 3162 | } |
| 3163 | |
| 3164 | static void hso_free_interface(struct usb_interface *interface) |
| 3165 | { |
| 3166 | struct hso_serial *hso_dev; |
Alan Cox | e136e30 | 2009-01-02 13:47:39 +0000 | [diff] [blame] | 3167 | struct tty_struct *tty; |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 3168 | int i; |
| 3169 | |
| 3170 | for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) { |
Joe Perches | 8e95a20 | 2009-12-03 07:58:21 +0000 | [diff] [blame] | 3171 | if (serial_table[i] && |
| 3172 | (serial_table[i]->interface == interface)) { |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 3173 | hso_dev = dev2ser(serial_table[i]); |
Alan Cox | e136e30 | 2009-01-02 13:47:39 +0000 | [diff] [blame] | 3174 | spin_lock_irq(&hso_dev->serial_lock); |
| 3175 | tty = tty_kref_get(hso_dev->tty); |
| 3176 | spin_unlock_irq(&hso_dev->serial_lock); |
| 3177 | if (tty) |
| 3178 | tty_hangup(tty); |
David S. Miller | ab153d8 | 2008-11-25 03:52:46 -0800 | [diff] [blame] | 3179 | mutex_lock(&hso_dev->parent->mutex); |
Alan Cox | e136e30 | 2009-01-02 13:47:39 +0000 | [diff] [blame] | 3180 | tty_kref_put(tty); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 3181 | hso_dev->parent->usb_gone = 1; |
David S. Miller | ab153d8 | 2008-11-25 03:52:46 -0800 | [diff] [blame] | 3182 | mutex_unlock(&hso_dev->parent->mutex); |
| 3183 | kref_put(&serial_table[i]->ref, hso_serial_ref_free); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 3184 | } |
| 3185 | } |
| 3186 | |
| 3187 | for (i = 0; i < HSO_MAX_NET_DEVICES; i++) { |
Joe Perches | 8e95a20 | 2009-12-03 07:58:21 +0000 | [diff] [blame] | 3188 | if (network_table[i] && |
| 3189 | (network_table[i]->interface == interface)) { |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 3190 | struct rfkill *rfk = dev2net(network_table[i])->rfkill; |
| 3191 | /* hso_stop_net_device doesn't stop the net queue since |
| 3192 | * traffic needs to start it again when suspended */ |
| 3193 | netif_stop_queue(dev2net(network_table[i])->net); |
| 3194 | hso_stop_net_device(network_table[i]); |
| 3195 | cancel_work_sync(&network_table[i]->async_put_intf); |
| 3196 | cancel_work_sync(&network_table[i]->async_get_intf); |
Johannes Berg | 19d337d | 2009-06-02 13:01:37 +0200 | [diff] [blame] | 3197 | if (rfk) { |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 3198 | rfkill_unregister(rfk); |
Johannes Berg | 19d337d | 2009-06-02 13:01:37 +0200 | [diff] [blame] | 3199 | rfkill_destroy(rfk); |
| 3200 | } |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 3201 | hso_free_net_device(network_table[i]); |
| 3202 | } |
| 3203 | } |
| 3204 | } |
| 3205 | |
| 3206 | /* Helper functions */ |
| 3207 | |
| 3208 | /* Get the endpoint ! */ |
| 3209 | static struct usb_endpoint_descriptor *hso_get_ep(struct usb_interface *intf, |
| 3210 | int type, int dir) |
| 3211 | { |
| 3212 | int i; |
| 3213 | struct usb_host_interface *iface = intf->cur_altsetting; |
| 3214 | struct usb_endpoint_descriptor *endp; |
| 3215 | |
| 3216 | for (i = 0; i < iface->desc.bNumEndpoints; i++) { |
| 3217 | endp = &iface->endpoint[i].desc; |
| 3218 | if (((endp->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == dir) && |
Julia Lawall | f201a8a | 2008-12-29 00:21:07 +0000 | [diff] [blame] | 3219 | (usb_endpoint_type(endp) == type)) |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 3220 | return endp; |
| 3221 | } |
| 3222 | |
| 3223 | return NULL; |
| 3224 | } |
| 3225 | |
| 3226 | /* Get the byte that describes which ports are enabled */ |
| 3227 | static int hso_get_mux_ports(struct usb_interface *intf, unsigned char *ports) |
| 3228 | { |
| 3229 | int i; |
| 3230 | struct usb_host_interface *iface = intf->cur_altsetting; |
| 3231 | |
| 3232 | if (iface->extralen == 3) { |
| 3233 | *ports = iface->extra[2]; |
| 3234 | return 0; |
| 3235 | } |
| 3236 | |
| 3237 | for (i = 0; i < iface->desc.bNumEndpoints; i++) { |
| 3238 | if (iface->endpoint[i].extralen == 3) { |
| 3239 | *ports = iface->endpoint[i].extra[2]; |
| 3240 | return 0; |
| 3241 | } |
| 3242 | } |
| 3243 | |
| 3244 | return -1; |
| 3245 | } |
| 3246 | |
| 3247 | /* interrupt urb needs to be submitted, used for serial read of muxed port */ |
| 3248 | static int hso_mux_submit_intr_urb(struct hso_shared_int *shared_int, |
| 3249 | struct usb_device *usb, gfp_t gfp) |
| 3250 | { |
| 3251 | int result; |
| 3252 | |
| 3253 | usb_fill_int_urb(shared_int->shared_intr_urb, usb, |
| 3254 | usb_rcvintpipe(usb, |
| 3255 | shared_int->intr_endp->bEndpointAddress & 0x7F), |
| 3256 | shared_int->shared_intr_buf, |
Jan Dumon | d9ced80 | 2010-01-05 04:51:02 +0000 | [diff] [blame] | 3257 | 1, |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 3258 | intr_callback, shared_int, |
| 3259 | shared_int->intr_endp->bInterval); |
| 3260 | |
| 3261 | result = usb_submit_urb(shared_int->shared_intr_urb, gfp); |
| 3262 | if (result) |
Jan Dumon | 8a5c9c4 | 2010-01-05 04:53:00 +0000 | [diff] [blame] | 3263 | dev_warn(&usb->dev, "%s failed mux_intr_urb %d\n", __func__, |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 3264 | result); |
| 3265 | |
| 3266 | return result; |
| 3267 | } |
| 3268 | |
| 3269 | /* operations setup of the serial interface */ |
Greg Kroah-Hartman | 6c59f56 | 2008-08-08 12:02:14 -0700 | [diff] [blame] | 3270 | static const struct tty_operations hso_serial_ops = { |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 3271 | .open = hso_serial_open, |
| 3272 | .close = hso_serial_close, |
| 3273 | .write = hso_serial_write, |
| 3274 | .write_room = hso_serial_write_room, |
Denis Joseph Barrow | 542f548 | 2009-01-02 13:47:52 +0000 | [diff] [blame] | 3275 | .ioctl = hso_serial_ioctl, |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 3276 | .set_termios = hso_serial_set_termios, |
| 3277 | .chars_in_buffer = hso_serial_chars_in_buffer, |
| 3278 | .tiocmget = hso_serial_tiocmget, |
| 3279 | .tiocmset = hso_serial_tiocmset, |
Alan Cox | 0bca1b9 | 2010-09-16 18:21:40 +0100 | [diff] [blame] | 3280 | .get_icount = hso_get_count, |
Denis Joseph Barrow | 8ef5ba6 | 2008-09-05 17:12:07 +0200 | [diff] [blame] | 3281 | .unthrottle = hso_unthrottle |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 3282 | }; |
| 3283 | |
| 3284 | static struct usb_driver hso_driver = { |
| 3285 | .name = driver_name, |
| 3286 | .probe = hso_probe, |
| 3287 | .disconnect = hso_disconnect, |
| 3288 | .id_table = hso_ids, |
| 3289 | .suspend = hso_suspend, |
| 3290 | .resume = hso_resume, |
Denis Joseph Barrow | 9c8f92a | 2008-11-25 00:36:10 -0800 | [diff] [blame] | 3291 | .reset_resume = hso_resume, |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 3292 | .supports_autosuspend = 1, |
| 3293 | }; |
| 3294 | |
| 3295 | static int __init hso_init(void) |
| 3296 | { |
| 3297 | int i; |
| 3298 | int result; |
| 3299 | |
| 3300 | /* put it in the log */ |
| 3301 | printk(KERN_INFO "hso: %s\n", version); |
| 3302 | |
| 3303 | /* Initialise the serial table semaphore and table */ |
| 3304 | spin_lock_init(&serial_table_lock); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 3305 | for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) |
| 3306 | serial_table[i] = NULL; |
| 3307 | |
| 3308 | /* allocate our driver using the proper amount of supported minors */ |
| 3309 | tty_drv = alloc_tty_driver(HSO_SERIAL_TTY_MINORS); |
| 3310 | if (!tty_drv) |
| 3311 | return -ENOMEM; |
| 3312 | |
| 3313 | /* fill in all needed values */ |
| 3314 | tty_drv->magic = TTY_DRIVER_MAGIC; |
| 3315 | tty_drv->owner = THIS_MODULE; |
| 3316 | tty_drv->driver_name = driver_name; |
| 3317 | tty_drv->name = tty_filename; |
| 3318 | |
| 3319 | /* if major number is provided as parameter, use that one */ |
| 3320 | if (tty_major) |
| 3321 | tty_drv->major = tty_major; |
| 3322 | |
| 3323 | tty_drv->minor_start = 0; |
| 3324 | tty_drv->num = HSO_SERIAL_TTY_MINORS; |
| 3325 | tty_drv->type = TTY_DRIVER_TYPE_SERIAL; |
| 3326 | tty_drv->subtype = SERIAL_TYPE_NORMAL; |
| 3327 | tty_drv->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; |
| 3328 | tty_drv->init_termios = tty_std_termios; |
Alan Cox | ac9720c | 2009-01-02 13:47:45 +0000 | [diff] [blame] | 3329 | hso_init_termios(&tty_drv->init_termios); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 3330 | tty_set_operations(tty_drv, &hso_serial_ops); |
| 3331 | |
| 3332 | /* register the tty driver */ |
| 3333 | result = tty_register_driver(tty_drv); |
| 3334 | if (result) { |
| 3335 | printk(KERN_ERR "%s - tty_register_driver failed(%d)\n", |
| 3336 | __func__, result); |
| 3337 | return result; |
| 3338 | } |
| 3339 | |
| 3340 | /* register this module as an usb driver */ |
| 3341 | result = usb_register(&hso_driver); |
| 3342 | if (result) { |
| 3343 | printk(KERN_ERR "Could not register hso driver? error: %d\n", |
| 3344 | result); |
| 3345 | /* cleanup serial interface */ |
| 3346 | tty_unregister_driver(tty_drv); |
| 3347 | return result; |
| 3348 | } |
| 3349 | |
| 3350 | /* done */ |
| 3351 | return 0; |
| 3352 | } |
| 3353 | |
| 3354 | static void __exit hso_exit(void) |
| 3355 | { |
| 3356 | printk(KERN_INFO "hso: unloaded\n"); |
| 3357 | |
| 3358 | tty_unregister_driver(tty_drv); |
| 3359 | /* deregister the usb driver */ |
| 3360 | usb_deregister(&hso_driver); |
| 3361 | } |
| 3362 | |
| 3363 | /* Module definitions */ |
| 3364 | module_init(hso_init); |
| 3365 | module_exit(hso_exit); |
| 3366 | |
| 3367 | MODULE_AUTHOR(MOD_AUTHOR); |
| 3368 | MODULE_DESCRIPTION(MOD_DESCRIPTION); |
| 3369 | MODULE_LICENSE(MOD_LICENSE); |
Greg Kroah-Hartman | 72dc1c0 | 2008-05-13 21:57:12 -0700 | [diff] [blame] | 3370 | |
| 3371 | /* change the debug level (eg: insmod hso.ko debug=0x04) */ |
| 3372 | MODULE_PARM_DESC(debug, "Level of debug [0x01 | 0x02 | 0x04 | 0x08 | 0x10]"); |
| 3373 | module_param(debug, int, S_IRUGO | S_IWUSR); |
| 3374 | |
| 3375 | /* set the major tty number (eg: insmod hso.ko tty_major=245) */ |
| 3376 | MODULE_PARM_DESC(tty_major, "Set the major tty number"); |
| 3377 | module_param(tty_major, int, S_IRUGO | S_IWUSR); |
| 3378 | |
| 3379 | /* disable network interface (eg: insmod hso.ko disable_net=1) */ |
| 3380 | MODULE_PARM_DESC(disable_net, "Disable the network interface"); |
| 3381 | module_param(disable_net, int, S_IRUGO | S_IWUSR); |