| Start/ | End/ | |||
| True | False | - | Line | Source |
| 1 | /* | |||
| 2 | * Copyright (c) 2001 Vojtech Pavlik | |||
| 3 | * | |||
| 4 | * CATC EL1210A NetMate USB Ethernet driver | |||
| 5 | * | |||
| 6 | * Sponsored by SuSE | |||
| 7 | * | |||
| 8 | * Based on the work of | |||
| 9 | * Donald Becker | |||
| 10 | * | |||
| 11 | * Old chipset support added by Simon Evans <spse@secret.org.uk> 2002 | |||
| 12 | * - adds support for Belkin F5U011 | |||
| 13 | */ | |||
| 14 | ||||
| 15 | /* | |||
| 16 | * This program is free software; you can redistribute it and/or modify | |||
| 17 | * it under the terms of the GNU General Public License as published by | |||
| 18 | * the Free Software Foundation; either version 2 of the License, or | |||
| 19 | * (at your option) any later version. | |||
| 20 | * | |||
| 21 | * This program is distributed in the hope that it will be useful, | |||
| 22 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |||
| 23 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |||
| 24 | * GNU General Public License for more details. | |||
| 25 | * | |||
| 26 | * You should have received a copy of the GNU General Public License | |||
| 27 | * along with this program; if not, write to the Free Software | |||
| 28 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |||
| 29 | * | |||
| 30 | * Should you need to contact me, the author, you can do so either by | |||
| 31 | * e-mail - mail your message to <vojtech@suse.cz>, or by paper mail: | |||
| 32 | * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic | |||
| 33 | */ | |||
| 34 | ||||
| 35 | #include <linux/init.h> | |||
| 36 | #include <linux/module.h> | |||
| 37 | #include <linux/kernel.h> | |||
| 38 | #include <linux/string.h> | |||
| 39 | #include <linux/slab.h> | |||
| 40 | #include <linux/netdevice.h> | |||
| 41 | #include <linux/etherdevice.h> | |||
| 42 | #include <linux/skbuff.h> | |||
| 43 | #include <linux/spinlock.h> | |||
| 44 | #include <linux/ethtool.h> | |||
| 45 | #include <linux/crc32.h> | |||
| 46 | #include <linux/bitops.h> | |||
| 47 | #include <asm/uaccess.h> | |||
| 48 | ||||
| 49 | #undef DEBUG | |||
| 50 | ||||
| 51 | #include <linux/usb.h> | |||
| 52 | ||||
| 53 | /* | |||
| 54 | * Version information. | |||
| 55 | */ | |||
| 56 | ||||
| 57 | #define DRIVER_VERSION "v2.8" | |||
| 58 | #define DRIVER_AUTHOR "Vojtech Pavlik <vojtech@suse.cz>" | |||
| 59 | #define DRIVER_DESC "CATC EL1210A NetMate USB Ethernet driver" | |||
| 60 | #define SHORT_DRIVER_DESC "EL1210A NetMate USB Ethernet" | |||
| 61 | ||||
| 62 | MODULE_AUTHOR(DRIVER_AUTHOR); | |||
| 63 | MODULE_DESCRIPTION(DRIVER_DESC); | |||
| 64 | MODULE_LICENSE("GPL"); | |||
| 65 | ||||
| 66 | static const char driver_name[] = "catc"; | |||
| 67 | ||||
| 68 | /* | |||
| 69 | * Some defines. | |||
| 70 | */ | |||
| 71 | ||||
| 72 | #define STATS_UPDATE (HZ) /* Time between stats updates */ | |||
| 73 | #define TX_TIMEOUT (5*HZ) /* Max time the queue can be stopped */ | |||
| 74 | #define PKT_SZ 1536 /* Max Ethernet packet size */ | |||
| 75 | #define RX_MAX_BURST 15 /* Max packets per rx buffer (> 0, < 16) */ | |||
| 76 | #define TX_MAX_BURST 15 /* Max full sized packets per tx buffer (> 0) */ | |||
| 77 | #define CTRL_QUEUE 16 /* Max control requests in flight (power of two) */ | |||
| 78 | #define RX_PKT_SZ 1600 /* Max size of receive packet for F5U011 */ | |||
| 79 | ||||
| 80 | /* | |||
| 81 | * Control requests. | |||
| 82 | */ | |||
| 83 | ||||
| 84 | enum control_requests { | |||
| 85 | ReadMem = 0xf1, | |||
| 86 | GetMac = 0xf2, | |||
| 87 | Reset = 0xf4, | |||
| 88 | SetMac = 0xf5, | |||
| 89 | SetRxMode = 0xf5, /* F5U011 only */ | |||
| 90 | WriteROM = 0xf8, | |||
| 91 | SetReg = 0xfa, | |||
| 92 | GetReg = 0xfb, | |||
| 93 | WriteMem = 0xfc, | |||
| 94 | ReadROM = 0xfd, | |||
| 95 | }; | |||
| 96 | ||||
| 97 | /* | |||
| 98 | * Registers. | |||
| 99 | */ | |||
| 100 | ||||
| 101 | enum register_offsets { | |||
| 102 | TxBufCount = 0x20, | |||
| 103 | RxBufCount = 0x21, | |||
| 104 | OpModes = 0x22, | |||
| 105 | TxQed = 0x23, | |||
| 106 | RxQed = 0x24, | |||
| 107 | MaxBurst = 0x25, | |||
| 108 | RxUnit = 0x60, | |||
| 109 | EthStatus = 0x61, | |||
| 110 | StationAddr0 = 0x67, | |||
| 111 | EthStats = 0x69, | |||
| 112 | LEDCtrl = 0x81, | |||
| 113 | }; | |||
| 114 | ||||
| 115 | enum eth_stats { | |||
| 116 | TxSingleColl = 0x00, | |||
| 117 | TxMultiColl = 0x02, | |||
| 118 | TxExcessColl = 0x04, | |||
| 119 | RxFramErr = 0x06, | |||
| 120 | }; | |||
| 121 | ||||
| 122 | enum op_mode_bits { | |||
| 123 | Op3MemWaits = 0x03, | |||
| 124 | OpLenInclude = 0x08, | |||
| 125 | OpRxMerge = 0x10, | |||
| 126 | OpTxMerge = 0x20, | |||
| 127 | OpWin95bugfix = 0x40, | |||
| 128 | OpLoopback = 0x80, | |||
| 129 | }; | |||
| 130 | ||||
| 131 | enum rx_filter_bits { | |||
| 132 | RxEnable = 0x01, | |||
| 133 | RxPolarity = 0x02, | |||
| 134 | RxForceOK = 0x04, | |||
| 135 | RxMultiCast = 0x08, | |||
| 136 | RxPromisc = 0x10, | |||
| 137 | AltRxPromisc = 0x20, /* F5U011 uses different bit */ | |||
| 138 | }; | |||
| 139 | ||||
| 140 | enum led_values { | |||
| 141 | LEDFast = 0x01, | |||
| 142 | LEDSlow = 0x02, | |||
| 143 | LEDFlash = 0x03, | |||
| 144 | LEDPulse = 0x04, | |||
| 145 | LEDLink = 0x08, | |||
| 146 | }; | |||
| 147 | ||||
| 148 | enum link_status { | |||
| 149 | LinkNoChange = 0, | |||
| 150 | LinkGood = 1, | |||
| 151 | LinkBad = 2 | |||
| 152 | }; | |||
| 153 | ||||
| 154 | /* | |||
| 155 | * The catc struct. | |||
| 156 | */ | |||
| 157 | ||||
| 158 | #define CTRL_RUNNING 0 | |||
| 159 | #define RX_RUNNING 1 | |||
| 160 | #define TX_RUNNING 2 | |||
| 161 | ||||
| 162 | struct catc { | |||
| 163 | struct net_device *netdev; | |||
| 164 | struct usb_device *usbdev; | |||
| 165 | ||||
| 166 | struct net_device_stats stats; | |||
| 167 | unsigned long flags; | |||
| 168 | ||||
| 169 | unsigned int tx_ptr, tx_idx; | |||
| 170 | unsigned int ctrl_head, ctrl_tail; | |||
| 171 | spinlock_t tx_lock, ctrl_lock; | |||
| 172 | ||||
| 173 | u8 tx_buf[2][TX_MAX_BURST * (PKT_SZ + 2)]; | |||
| 174 | u8 rx_buf[RX_MAX_BURST * (PKT_SZ + 2)]; | |||
| 175 | u8 irq_buf[2]; | |||
| 176 | u8 ctrl_buf[64]; | |||
| 177 | struct usb_ctrlrequest ctrl_dr; | |||
| 178 | ||||
| 179 | struct timer_list timer; | |||
| 180 | u8 stats_buf[8]; | |||
| 181 | u16 stats_vals[4]; | |||
| 182 | unsigned long last_stats; | |||
| 183 | ||||
| 184 | u8 multicast[64]; | |||
| 185 | ||||
| 186 | struct ctrl_queue { | |||
| 187 | u8 dir; | |||
| 188 | u8 request; | |||
| 189 | u16 value; | |||
| 190 | u16 index; | |||
| 191 | void *buf; | |||
| 192 | int len; | |||
| 193 | void (*callback)(struct catc *catc, struct ctrl_queue *q); | |||
| 194 | } ctrl_queue[CTRL_QUEUE]; | |||
| 195 | ||||
| 196 | struct urb *tx_urb, *rx_urb, *irq_urb, *ctrl_urb; | |||
| 197 | ||||
| 198 | u8 is_f5u011; /* Set if device is an F5U011 */ | |||
| 199 | u8 rxmode[2]; /* Used for F5U011 */ | |||
| 200 | atomic_t recq_sz; /* Used for F5U011 - counter of waiting rx packets */ | |||
| 201 | }; | |||
| 202 | ||||
| 203 | /* | |||
| 204 | * Useful macros. | |||
| 205 | */ | |||
| 206 | ||||
| 207 | #define catc_get_mac(catc, mac) catc_ctrl_msg(catc, USB_DIR_IN, GetMac, 0, 0, mac, 6) | |||
| 208 | #define catc_reset(catc) catc_ctrl_msg(catc, USB_DIR_OUT, Reset, 0, 0, NULL, 0) | |||
| 209 | #define catc_set_reg(catc, reg, val) catc_ctrl_msg(catc, USB_DIR_OUT, SetReg, val, reg, NULL, 0) | |||
| 210 | #define catc_get_reg(catc, reg, buf) catc_ctrl_msg(catc, USB_DIR_IN, GetReg, 0, reg, buf, 1) | |||
| 211 | #define catc_write_mem(catc, addr, buf, size) catc_ctrl_msg(catc, USB_DIR_OUT, WriteMem, 0, addr, buf, size) | |||
| 212 | #define catc_read_mem(catc, addr, buf, size) catc_ctrl_msg(catc, USB_DIR_IN, ReadMem, 0, addr, buf, size) | |||
| 213 | ||||
| 214 | #define f5u011_rxmode(catc, rxmode) catc_ctrl_msg(catc, USB_DIR_OUT, SetRxMode, 0, 1, rxmode, 2) | |||
| 215 | #define f5u011_rxmode_async(catc, rxmode) catc_ctrl_async(catc, USB_DIR_OUT, SetRxMode, 0, 1, &rxmode, 2, NULL) | |||
| 216 | #define f5u011_mchash_async(catc, hash) catc_ctrl_async(catc, USB_DIR_OUT, SetRxMode, 0, 2, &hash, 8, NULL) | |||
| 217 | ||||
| 218 | #define catc_set_reg_async(catc, reg, val) catc_ctrl_async(catc, USB_DIR_OUT, SetReg, val, reg, NULL, 0, NULL) | |||
| 219 | #define catc_get_reg_async(catc, reg, cb) catc_ctrl_async(catc, USB_DIR_IN, GetReg, 0, reg, NULL, 1, cb) | |||
| 220 | #define catc_write_mem_async(catc, addr, buf, size) catc_ctrl_async(catc, USB_DIR_OUT, WriteMem, 0, addr, buf, size, NULL) | |||
| 221 | ||||
| 222 | /* | |||
| 223 | * Receive routines. | |||
| 224 | */ | |||
| 225 | ||||
| 0 | 0 | - | 226 | static void catc_rx_done(struct urb *urb, struct pt_regs *regs) |
| 227 | { | |||
| 228 | struct catc *catc = urb->context; | |||
| 229 | u8 *pkt_start = urb->transfer_buffer; | |||
| 230 | struct sk_buff *skb; | |||
| 231 | int pkt_len, pkt_offset = 0; | |||
| 232 | ||||
| 0 | 0 | - | 233 | if (!catc->is_f5u011) { |
| 234 | clear_bit(RX_RUNNING, &catc->flags); | |||
| 235 | pkt_offset = 2; | |||
| 236 | } | |||
| 237 | ||||
| 0 | 0 | - | 238 | if (urb->status) { |
| 239 | dbg("rx_done, status %d, length %d", urb->status, urb->actual_length); | |||
| 0 | 0 | - | 239 | do-while (0) |
| 0 | - | 240 | return; | |
| 241 | } | |||
| 242 | ||||
| 243 | do { | |||
| 0 | 0 | - | 244 | if(!catc->is_f5u011) { |
| 245 | pkt_len = le16_to_cpup((__le16*)pkt_start); | |||
| 0 | 0 | - | 246 | if (pkt_len > urb->actual_length) { |
| 247 | catc->stats.rx_length_errors++; | |||
| 248 | catc->stats.rx_errors++; | |||
| 0 | - | 249 | break; | |
| 250 | } | |||
| 251 | } else { | |||
| 252 | pkt_len = urb->actual_length; | |||
| 253 | } | |||
| 254 | ||||
| 0 | 0 | - | 255 | if (!(skb = dev_alloc_skb(pkt_len))) |
| 0 | - | 256 | return; | |
| 257 | ||||
| 258 | skb->dev = catc->netdev; | |||
| 259 | eth_copy_and_sum(skb, pkt_start + pkt_offset, pkt_len, 0); | |||
| 260 | skb_put(skb, pkt_len); | |||
| 261 | ||||
| 262 | skb->protocol = eth_type_trans(skb, catc->netdev); | |||
| 263 | netif_rx(skb); | |||
| 264 | ||||
| 265 | catc->stats.rx_packets++; | |||
| 266 | catc->stats.rx_bytes += pkt_len; | |||
| 267 | ||||
| 268 | /* F5U011 only does one packet per RX */ | |||
| 0 | 0 | - | 269 | if (catc->is_f5u011) |
| 0 | - | 270 | break; | |
| 271 | pkt_start += (((pkt_len + 1) >> 6) + 1) << 6; | |||
| 272 | ||||
| 0 | 0 | - | 273 | } while (pkt_start - (u8 *) urb->transfer_buffer < urb->actual_length); |
| 274 | ||||
| 275 | catc->netdev->last_rx = jiffies; | |||
| 276 | ||||
| 0 | 0 | - | 277 | if (catc->is_f5u011) { |
| 0 | 0 | - | 278 | if (atomic_read(&catc->recq_sz)) { |
| 279 | int status; | |||
| 280 | atomic_dec(&catc->recq_sz); | |||
| 281 | dbg("getting extra packet"); | |||
| 0 | 0 | - | 281 | do-while (0) |
| 282 | urb->dev = catc->usbdev; | |||
| 0 | 0 | - | 283 | if ((status = usb_submit_urb(urb, GFP_ATOMIC)) < 0) { |
| 284 | dbg("submit(rx_urb) status %d", status); | |||
| 0 | 0 | - | 284 | do-while (0) |
| 285 | } | |||
| 286 | } else { | |||
| 287 | clear_bit(RX_RUNNING, &catc->flags); | |||
| 288 | } | |||
| 289 | } | |||
| 290 | } | |||
| 291 | ||||
| 0 | 0 | - | 292 | static void catc_irq_done(struct urb *urb, struct pt_regs *regs) |
| 293 | { | |||
| 294 | struct catc *catc = urb->context; | |||
| 295 | u8 *data = urb->transfer_buffer; | |||
| 296 | int status; | |||
| 297 | unsigned int hasdata = 0, linksts = LinkNoChange; | |||
| 298 | ||||
| 0 | 0 | - | 299 | if (!catc->is_f5u011) { |
| 300 | hasdata = data[1] & 0x80; | |||
| 0 | 0 | - | 301 | if (data[1] & 0x40) |
| 302 | linksts = LinkGood; | |||
| 0 | 0 | - | 303 | else if (data[1] & 0x20) |
| 304 | linksts = LinkBad; | |||
| 305 | } else { | |||
| 306 | hasdata = (unsigned int)(be16_to_cpup((__be16*)data) & 0x0fff); | |||
| 0 | 0 | - | 307 | if (data[0] == 0x90) |
| 308 | linksts = LinkGood; | |||
| 0 | 0 | - | 309 | else if (data[0] == 0xA0) |
| 310 | linksts = LinkBad; | |||
| 311 | } | |||
| 312 | ||||
| 313 | switch (urb->status) { | |||
| 0 | - | 314 | case 0: /* success */ | |
| 0 | - | 315 | break; | |
| 0 | - | 316 | case -ECONNRESET: /* unlink */ | |
| 0 | - | 317 | case -ENOENT: | |
| 0 | - | 318 | case -ESHUTDOWN: | |
| 0 | - | 319 | return; | |
| 320 | /* -EPIPE: should clear the halt */ | |||
| 0 | - | 321 | default: /* error */ | |
| 322 | dbg("irq_done, status %d, data %02x %02x.", urb->status, data[0], data[1]); | |||
| 0 | 0 | - | 322 | do-while (0) |
| 0 | - | 323 | goto resubmit; | |
| 324 | } | |||
| 325 | ||||
| 0 | 0 | - | 326 | if (linksts == LinkGood) { |
| 327 | netif_carrier_on(catc->netdev); | |||
| 328 | dbg("link ok"); | |||
| 0 | 0 | - | 328 | do-while (0) |
| 329 | } | |||
| 330 | ||||
| 0 | 0 | - | 331 | if (linksts == LinkBad) { |
| 332 | netif_carrier_off(catc->netdev); | |||
| 333 | dbg("link bad"); | |||
| 0 | 0 | - | 333 | do-while (0) |
| 334 | } | |||
| 335 | ||||
| 0 | 0 | - | 336 | if (hasdata) { |
| 0 | 0 | - | 337 | if (test_and_set_bit(RX_RUNNING, &catc->flags)) { |
| 0 | 0 | - | 338 | if (catc->is_f5u011) |
| 339 | atomic_inc(&catc->recq_sz); | |||
| 340 | } else { | |||
| 341 | catc->rx_urb->dev = catc->usbdev; | |||
| 0 | 0 | - | 342 | if ((status = usb_submit_urb(catc->rx_urb, GFP_ATOMIC)) < 0) { |
| 343 | err("submit(rx_urb) status %d", status); | |||
| 344 | } | |||
| 345 | } | |||
| 346 | } | |||
| 347 | resubmit: | |||
| 348 | status = usb_submit_urb (urb, SLAB_ATOMIC); | |||
| 0 | 0 | - | 349 | if (status) |
| 350 | err ("can't resubmit intr, %s-%s, status %d", | |||
| 351 | catc->usbdev->bus->bus_name, | |||
| 352 | catc->usbdev->devpath, status); | |||
| 353 | } | |||
| 354 | ||||
| 355 | /* | |||
| 356 | * Transmit routines. | |||
| 357 | */ | |||
| 358 | ||||
| 0 | 0 | - | 359 | static void catc_tx_run(struct catc *catc) |
| 360 | { | |||
| 361 | int status; | |||
| 362 | ||||
| 0 | 0 | - | 363 | if (catc->is_f5u011) |
| 364 | catc->tx_ptr = (catc->tx_ptr + 63) & ~63; | |||
| 365 | ||||
| 366 | catc->tx_urb->transfer_buffer_length = catc->tx_ptr; | |||
| 367 | catc->tx_urb->transfer_buffer = catc->tx_buf[catc->tx_idx]; | |||
| 368 | catc->tx_urb->dev = catc->usbdev; | |||
| 369 | ||||
| 0 | 0 | - | 370 | if ((status = usb_submit_urb(catc->tx_urb, GFP_ATOMIC)) < 0) |
| 371 | err("submit(tx_urb), status %d", status); | |||
| 372 | ||||
| 373 | catc->tx_idx = !catc->tx_idx; | |||
| 374 | catc->tx_ptr = 0; | |||
| 375 | ||||
| 376 | catc->netdev->trans_start = jiffies; | |||
| 377 | } | |||
| 378 | ||||
| 0 | 0 | - | 379 | static void catc_tx_done(struct urb *urb, struct pt_regs *regs) |
| 380 | { | |||
| 381 | struct catc *catc = urb->context; | |||
| 382 | unsigned long flags; | |||
| 383 | ||||
| 0 | 0 | - | 384 | if (urb->status == -ECONNRESET) { |
| 385 | dbg("Tx Reset."); | |||
| 0 | 0 | - | 385 | do-while (0) |
| 386 | urb->status = 0; | |||
| 387 | catc->netdev->trans_start = jiffies; | |||
| 388 | catc->stats.tx_errors++; | |||
| 389 | clear_bit(TX_RUNNING, &catc->flags); | |||
| 390 | netif_wake_queue(catc->netdev); | |||
| 0 | - | 391 | return; | |
| 392 | } | |||
| 393 | ||||
| 0 | 0 | - | 394 | if (urb->status) { |
| 395 | dbg("tx_done, status %d, length %d", urb->status, urb->actual_length); | |||
| 0 | 0 | - | 395 | do-while (0) |
| 0 | - | 396 | return; | |
| 397 | } | |||
| 398 | ||||
| 399 | spin_lock_irqsave(&catc->tx_lock, flags); | |||
| 399 | do | |||
| 399 | do | |||
| 0 | 0 | - | 399 | do-while (0) |
| 0 | 0 | - | 399 | do-while (0) |
| 399 | do | |||
| 399 | do | |||
| 0 | 0 | - | 399 | do-while (0) |
| 0 | 0 | - | 399 | do-while (0) |
| 0 | 0 | - | 399 | do-while (0) |
| 400 | ||||
| 0 | 0 | - | 401 | if (catc->tx_ptr) |
| 402 | catc_tx_run(catc); | |||
| 403 | else | |||
| 404 | clear_bit(TX_RUNNING, &catc->flags); | |||
| 405 | ||||
| 406 | netif_wake_queue(catc->netdev); | |||
| 407 | ||||
| 408 | spin_unlock_irqrestore(&catc->tx_lock, flags); | |||
| 408 | do | |||
| 408 | do | |||
| 0 | 0 | - | 408 | do-while (0) |
| 0 | 0 | - | 408 | do-while (0) |
| 0 | 0 | - | 408 | do-while (0) |
| 409 | } | |||
| 410 | ||||
| 0 | 0 | - | 411 | static int catc_hard_start_xmit(struct sk_buff *skb, struct net_device *netdev) |
| 412 | { | |||
| 413 | struct catc *catc = netdev_priv(netdev); | |||
| 414 | unsigned long flags; | |||
| 415 | char *tx_buf; | |||
| 416 | ||||
| 417 | spin_lock_irqsave(&catc->tx_lock, flags); | |||
| 417 | do | |||
| 417 | do | |||
| 0 | 0 | - | 417 | do-while (0) |
| 0 | 0 | - | 417 | do-while (0) |
| 417 | do | |||
| 417 | do | |||
| 0 | 0 | - | 417 | do-while (0) |
| 0 | 0 | - | 417 | do-while (0) |
| 0 | 0 | - | 417 | do-while (0) |
| 418 | ||||
| 419 | catc->tx_ptr = (((catc->tx_ptr - 1) >> 6) + 1) << 6; | |||
| 420 | tx_buf = catc->tx_buf[catc->tx_idx] + catc->tx_ptr; | |||
| 421 | *((u16*)tx_buf) = (catc->is_f5u011) ? cpu_to_be16((u16)skb->len) : cpu_to_le16((u16)skb->len); | |||
| 0 | 0 | - | 421 | ternary-?: ( catc -> is_f5u011 ) |
| 0 | 0 | - | 421 | ternary-?: __builtin_constant_p ( ( __u16 ) ( .. |
| 422 | memcpy(tx_buf + 2, skb->data, skb->len); | |||
| 423 | catc->tx_ptr += skb->len + 2; | |||
| 424 | ||||
| 0 | 0 | - | 425 | if (!test_and_set_bit(TX_RUNNING, &catc->flags)) |
| 426 | catc_tx_run(catc); | |||
| 427 | ||||
| 428 | if ((catc->is_f5u011 && catc->tx_ptr) | |||
| 0 | 0 | - | 429 | || (catc->tx_ptr >= ((TX_MAX_BURST - 1) * (PKT_SZ + 2)))) |
| 0 | - | 429 | (T && T) || (_) | |
| 0 | - | 429 | (T && F) || (T) | |
| 0 | - | 429 | (F && _) || (T) | |
| 0 | - | 429 | (T && F) || (F) | |
| 0 | - | 429 | (F && _) || (F) | |
| 430 | netif_stop_queue(netdev); | |||
| 431 | ||||
| 432 | spin_unlock_irqrestore(&catc->tx_lock, flags); | |||
| 432 | do | |||
| 432 | do | |||
| 0 | 0 | - | 432 | do-while (0) |
| 0 | 0 | - | 432 | do-while (0) |
| 0 | 0 | - | 432 | do-while (0) |
| 433 | ||||
| 434 | catc->stats.tx_bytes += skb->len; | |||
| 435 | catc->stats.tx_packets++; | |||
| 436 | ||||
| 437 | dev_kfree_skb(skb); | |||
| 438 | ||||
| 0 | - | 439 | return 0; | |
| 440 | } | |||
| 441 | ||||
| 0 | 0 | - | 442 | static void catc_tx_timeout(struct net_device *netdev) |
| 443 | { | |||
| 444 | struct catc *catc = netdev_priv(netdev); | |||
| 445 | ||||
| 446 | warn("Transmit timed out."); | |||
| 447 | usb_unlink_urb(catc->tx_urb); | |||
| 448 | } | |||
| 449 | ||||
| 450 | /* | |||
| 451 | * Control messages. | |||
| 452 | */ | |||
| 453 | ||||
| 0 | 0 | - | 454 | static int catc_ctrl_msg(struct catc *catc, u8 dir, u8 request, u16 value, u16 index, void *buf, int len) |
| 455 | { | |||
| 456 | int retval = usb_control_msg(catc->usbdev, | |||
| 457 | dir ? usb_rcvctrlpipe(catc->usbdev, 0) : usb_sndctrlpipe(catc->usbdev, 0), | |||
| 0 | 0 | - | 457 | ternary-?: dir |
| 458 | request, 0x40 | dir, value, index, buf, len, 1000); | |||
| 459 | return retval < 0 ? retval : 0; | |||
| 0 | 0 | - | 459 | ternary-?: retval < 0 |
| 0 | - | 459 | return retval < 0 ? retval : 0 | |
| 460 | } | |||
| 461 | ||||
| 0 | 0 | - | 462 | static void catc_ctrl_run(struct catc *catc) |
| 463 | { | |||
| 464 | struct ctrl_queue *q = catc->ctrl_queue + catc->ctrl_tail; | |||
| 465 | struct usb_device *usbdev = catc->usbdev; | |||
| 466 | struct urb *urb = catc->ctrl_urb; | |||
| 467 | struct usb_ctrlrequest *dr = &catc->ctrl_dr; | |||
| 468 | int status; | |||
| 469 | ||||
| 470 | dr->bRequest = q->request; | |||
| 471 | dr->bRequestType = 0x40 | q->dir; | |||
| 472 | dr->wValue = cpu_to_le16(q->value); | |||
| 473 | dr->wIndex = cpu_to_le16(q->index); | |||
| 474 | dr->wLength = cpu_to_le16(q->len); | |||
| 475 | ||||
| 476 | urb->pipe = q->dir ? usb_rcvctrlpipe(usbdev, 0) : usb_sndctrlpipe(usbdev, 0); | |||
| 0 | 0 | - | 476 | ternary-?: q -> dir |
| 477 | urb->transfer_buffer_length = q->len; | |||
| 478 | urb->transfer_buffer = catc->ctrl_buf; | |||
| 479 | urb->setup_packet = (void *) dr; | |||
| 480 | urb->dev = usbdev; | |||
| 481 | ||||
| 0 | 0 | - | 482 | if (!q->dir && q->buf && q->len) |
| 0 | - | 482 | T && T && T | |
| 0 | - | 482 | T && T && F | |
| 0 | - | 482 | T && F && _ | |
| 0 | - | 482 | F && _ && _ | |
| 483 | memcpy(catc->ctrl_buf, q->buf, q->len); | |||
| 484 | ||||
| 0 | 0 | - | 485 | if ((status = usb_submit_urb(catc->ctrl_urb, GFP_KERNEL))) |
| 486 | err("submit(ctrl_urb) status %d", status); | |||
| 487 | } | |||
| 488 | ||||
| 0 | 0 | - | 489 | static void catc_ctrl_done(struct urb *urb, struct pt_regs *regs) |
| 490 | { | |||
| 491 | struct catc *catc = urb->context; | |||
| 492 | struct ctrl_queue *q; | |||
| 493 | unsigned long flags; | |||
| 494 | ||||
| 0 | 0 | - | 495 | if (urb->status) |
| 496 | dbg("ctrl_done, status %d, len %d.", urb->status, urb->actual_length); | |||
| 0 | 0 | - | 496 | do-while (0) |
| 497 | ||||
| 498 | spin_lock_irqsave(&catc->ctrl_lock, flags); | |||
| 498 | ||||