1 /* 2 * Edgeport USB Serial Converter driver 3 * 4 * Copyright (C) 2000-2002 Inside Out Networks, All rights reserved. 5 * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 * Supports the following devices: 13 * EP/1 EP/2 EP/4 EP/21 EP/22 EP/221 EP/42 EP/421 WATCHPORT 14 * 15 * For questions or problems with this driver, contact Inside Out 16 * Networks technical support, or Peter Berger <pberger@brimson.com>, 17 * or Al Borchers <alborchers@steinerpoint.com>. 18 */ 19 20 #include <linux/kernel.h> 21 #include <linux/jiffies.h> 22 #include <linux/errno.h> 23 #include <linux/init.h> 24 #include <linux/slab.h> 25 #include <linux/tty.h> 26 #include <linux/tty_driver.h> 27 #include <linux/tty_flip.h> 28 #include <linux/module.h> 29 #include <linux/spinlock.h> 30 #include <linux/mutex.h> 31 #include <linux/serial.h> 32 #include <linux/kfifo.h> 33 #include <linux/ioctl.h> 34 #include <linux/firmware.h> 35 #include <linux/uaccess.h> 36 #include <linux/usb.h> 37 #include <linux/usb/serial.h> 38 39 #include "io_16654.h" 40 #include "io_usbvend.h" 41 #include "io_ti.h" 42 43 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli" 44 #define DRIVER_DESC "Edgeport USB Serial Driver" 45 46 #define EPROM_PAGE_SIZE 64 47 48 49 /* different hardware types */ 50 #define HARDWARE_TYPE_930 0 51 #define HARDWARE_TYPE_TIUMP 1 52 53 /* IOCTL_PRIVATE_TI_GET_MODE Definitions */ 54 #define TI_MODE_CONFIGURING 0 /* Device has not entered start device */ 55 #define TI_MODE_BOOT 1 /* Staying in boot mode */ 56 #define TI_MODE_DOWNLOAD 2 /* Made it to download mode */ 57 #define TI_MODE_TRANSITIONING 3 /* Currently in boot mode but 58 transitioning to download mode */ 59 60 /* read urb state */ 61 #define EDGE_READ_URB_RUNNING 0 62 #define EDGE_READ_URB_STOPPING 1 63 #define EDGE_READ_URB_STOPPED 2 64 65 #define EDGE_CLOSING_WAIT 4000 /* in .01 sec */ 66 67 #define EDGE_OUT_BUF_SIZE 1024 68 69 70 /* Product information read from the Edgeport */ 71 struct product_info { 72 int TiMode; /* Current TI Mode */ 73 __u8 hardware_type; /* Type of hardware */ 74 } __attribute__((packed)); 75 76 struct edgeport_port { 77 __u16 uart_base; 78 __u16 dma_address; 79 __u8 shadow_msr; 80 __u8 shadow_mcr; 81 __u8 shadow_lsr; 82 __u8 lsr_mask; 83 __u32 ump_read_timeout; /* Number of milliseconds the UMP will 84 wait without data before completing 85 a read short */ 86 int baud_rate; 87 int close_pending; 88 int lsr_event; 89 90 struct edgeport_serial *edge_serial; 91 struct usb_serial_port *port; 92 __u8 bUartMode; /* Port type, 0: RS232, etc. */ 93 spinlock_t ep_lock; 94 int ep_read_urb_state; 95 int ep_write_urb_in_use; 96 struct kfifo write_fifo; 97 }; 98 99 struct edgeport_serial { 100 struct product_info product_info; 101 u8 TI_I2C_Type; /* Type of I2C in UMP */ 102 u8 TiReadI2C; /* Set to TRUE if we have read the 103 I2c in Boot Mode */ 104 struct mutex es_lock; 105 int num_ports_open; 106 struct usb_serial *serial; 107 }; 108 109 110 /* Devices that this driver supports */ 111 static const struct usb_device_id edgeport_1port_id_table[] = { 112 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) }, 113 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) }, 114 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) }, 115 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) }, 116 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) }, 117 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) }, 118 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) }, 119 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) }, 120 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) }, 121 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) }, 122 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) }, 123 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) }, 124 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) }, 125 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) }, 126 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) }, 127 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) }, 128 { } 129 }; 130 131 static const struct usb_device_id edgeport_2port_id_table[] = { 132 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) }, 133 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) }, 134 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) }, 135 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) }, 136 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) }, 137 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) }, 138 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) }, 139 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) }, 140 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) }, 141 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) }, 142 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) }, 143 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) }, 144 /* The 4, 8 and 16 port devices show up as multiple 2 port devices */ 145 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) }, 146 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) }, 147 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) }, 148 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) }, 149 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) }, 150 { } 151 }; 152 153 /* Devices that this driver supports */ 154 static const struct usb_device_id id_table_combined[] = { 155 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) }, 156 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) }, 157 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) }, 158 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) }, 159 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) }, 160 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) }, 161 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) }, 162 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) }, 163 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) }, 164 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) }, 165 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) }, 166 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) }, 167 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) }, 168 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) }, 169 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) }, 170 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) }, 171 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) }, 172 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) }, 173 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) }, 174 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) }, 175 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) }, 176 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) }, 177 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) }, 178 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) }, 179 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) }, 180 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) }, 181 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) }, 182 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) }, 183 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) }, 184 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) }, 185 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) }, 186 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) }, 187 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) }, 188 { } 189 }; 190 191 MODULE_DEVICE_TABLE(usb, id_table_combined); 192 193 static unsigned char OperationalMajorVersion; 194 static unsigned char OperationalMinorVersion; 195 static unsigned short OperationalBuildNumber; 196 197 static int closing_wait = EDGE_CLOSING_WAIT; 198 static bool ignore_cpu_rev; 199 static int default_uart_mode; /* RS232 */ 200 201 static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, 202 int length); 203 204 static void stop_read(struct edgeport_port *edge_port); 205 static int restart_read(struct edgeport_port *edge_port); 206 207 static void edge_set_termios(struct tty_struct *tty, 208 struct usb_serial_port *port, struct ktermios *old_termios); 209 static void edge_send(struct usb_serial_port *port, struct tty_struct *tty); 210 211 /* sysfs attributes */ 212 static int edge_create_sysfs_attrs(struct usb_serial_port *port); 213 static int edge_remove_sysfs_attrs(struct usb_serial_port *port); 214 215 216 static int ti_vread_sync(struct usb_device *dev, __u8 request, 217 __u16 value, __u16 index, u8 *data, int size) 218 { 219 int status; 220 221 status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request, 222 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN), 223 value, index, data, size, 1000); 224 if (status < 0) 225 return status; 226 if (status != size) { 227 dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n", 228 __func__, size, status); 229 return -ECOMM; 230 } 231 return 0; 232 } 233 234 static int ti_vsend_sync(struct usb_device *dev, __u8 request, 235 __u16 value, __u16 index, u8 *data, int size) 236 { 237 int status; 238 239 status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request, 240 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT), 241 value, index, data, size, 1000); 242 if (status < 0) 243 return status; 244 if (status != size) { 245 dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n", 246 __func__, size, status); 247 return -ECOMM; 248 } 249 return 0; 250 } 251 252 static int send_cmd(struct usb_device *dev, __u8 command, 253 __u8 moduleid, __u16 value, u8 *data, 254 int size) 255 { 256 return ti_vsend_sync(dev, command, value, moduleid, data, size); 257 } 258 259 /* clear tx/rx buffers and fifo in TI UMP */ 260 static int purge_port(struct usb_serial_port *port, __u16 mask) 261 { 262 int port_number = port->port_number; 263 264 dev_dbg(&port->dev, "%s - port %d, mask %x\n", __func__, port_number, mask); 265 266 return send_cmd(port->serial->dev, 267 UMPC_PURGE_PORT, 268 (__u8)(UMPM_UART1_PORT + port_number), 269 mask, 270 NULL, 271 0); 272 } 273 274 /** 275 * read_download_mem - Read edgeport memory from TI chip 276 * @dev: usb device pointer 277 * @start_address: Device CPU address at which to read 278 * @length: Length of above data 279 * @address_type: Can read both XDATA and I2C 280 * @buffer: pointer to input data buffer 281 */ 282 static int read_download_mem(struct usb_device *dev, int start_address, 283 int length, __u8 address_type, __u8 *buffer) 284 { 285 int status = 0; 286 __u8 read_length; 287 __be16 be_start_address; 288 289 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, length); 290 291 /* Read in blocks of 64 bytes 292 * (TI firmware can't handle more than 64 byte reads) 293 */ 294 while (length) { 295 if (length > 64) 296 read_length = 64; 297 else 298 read_length = (__u8)length; 299 300 if (read_length > 1) { 301 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, read_length); 302 } 303 be_start_address = cpu_to_be16(start_address); 304 status = ti_vread_sync(dev, UMPC_MEMORY_READ, 305 (__u16)address_type, 306 (__force __u16)be_start_address, 307 buffer, read_length); 308 309 if (status) { 310 dev_dbg(&dev->dev, "%s - ERROR %x\n", __func__, status); 311 return status; 312 } 313 314 if (read_length > 1) 315 usb_serial_debug_data(&dev->dev, __func__, read_length, buffer); 316 317 /* Update pointers/length */ 318 start_address += read_length; 319 buffer += read_length; 320 length -= read_length; 321 } 322 323 return status; 324 } 325 326 static int read_ram(struct usb_device *dev, int start_address, 327 int length, __u8 *buffer) 328 { 329 return read_download_mem(dev, start_address, length, 330 DTK_ADDR_SPACE_XDATA, buffer); 331 } 332 333 /* Read edgeport memory to a given block */ 334 static int read_boot_mem(struct edgeport_serial *serial, 335 int start_address, int length, __u8 *buffer) 336 { 337 int status = 0; 338 int i; 339 340 for (i = 0; i < length; i++) { 341 status = ti_vread_sync(serial->serial->dev, 342 UMPC_MEMORY_READ, serial->TI_I2C_Type, 343 (__u16)(start_address+i), &buffer[i], 0x01); 344 if (status) { 345 dev_dbg(&serial->serial->dev->dev, "%s - ERROR %x\n", __func__, status); 346 return status; 347 } 348 } 349 350 dev_dbg(&serial->serial->dev->dev, "%s - start_address = %x, length = %d\n", 351 __func__, start_address, length); 352 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer); 353 354 serial->TiReadI2C = 1; 355 356 return status; 357 } 358 359 /* Write given block to TI EPROM memory */ 360 static int write_boot_mem(struct edgeport_serial *serial, 361 int start_address, int length, __u8 *buffer) 362 { 363 int status = 0; 364 int i; 365 u8 *temp; 366 367 /* Must do a read before write */ 368 if (!serial->TiReadI2C) { 369 temp = kmalloc(1, GFP_KERNEL); 370 if (!temp) { 371 dev_err(&serial->serial->dev->dev, 372 "%s - out of memory\n", __func__); 373 return -ENOMEM; 374 } 375 status = read_boot_mem(serial, 0, 1, temp); 376 kfree(temp); 377 if (status) 378 return status; 379 } 380 381 for (i = 0; i < length; ++i) { 382 status = ti_vsend_sync(serial->serial->dev, 383 UMPC_MEMORY_WRITE, buffer[i], 384 (__u16)(i + start_address), NULL, 0); 385 if (status) 386 return status; 387 } 388 389 dev_dbg(&serial->serial->dev->dev, "%s - start_sddr = %x, length = %d\n", __func__, start_address, length); 390 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer); 391 392 return status; 393 } 394 395 396 /* Write edgeport I2C memory to TI chip */ 397 static int write_i2c_mem(struct edgeport_serial *serial, 398 int start_address, int length, __u8 address_type, __u8 *buffer) 399 { 400 struct device *dev = &serial->serial->dev->dev; 401 int status = 0; 402 int write_length; 403 __be16 be_start_address; 404 405 /* We can only send a maximum of 1 aligned byte page at a time */ 406 407 /* calculate the number of bytes left in the first page */ 408 write_length = EPROM_PAGE_SIZE - 409 (start_address & (EPROM_PAGE_SIZE - 1)); 410 411 if (write_length > length) 412 write_length = length; 413 414 dev_dbg(dev, "%s - BytesInFirstPage Addr = %x, length = %d\n", 415 __func__, start_address, write_length); 416 usb_serial_debug_data(dev, __func__, write_length, buffer); 417 418 /* Write first page */ 419 be_start_address = cpu_to_be16(start_address); 420 status = ti_vsend_sync(serial->serial->dev, 421 UMPC_MEMORY_WRITE, (__u16)address_type, 422 (__force __u16)be_start_address, 423 buffer, write_length); 424 if (status) { 425 dev_dbg(dev, "%s - ERROR %d\n", __func__, status); 426 return status; 427 } 428 429 length -= write_length; 430 start_address += write_length; 431 buffer += write_length; 432 433 /* We should be aligned now -- can write 434 max page size bytes at a time */ 435 while (length) { 436 if (length > EPROM_PAGE_SIZE) 437 write_length = EPROM_PAGE_SIZE; 438 else 439 write_length = length; 440 441 dev_dbg(dev, "%s - Page Write Addr = %x, length = %d\n", 442 __func__, start_address, write_length); 443 usb_serial_debug_data(dev, __func__, write_length, buffer); 444 445 /* Write next page */ 446 be_start_address = cpu_to_be16(start_address); 447 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE, 448 (__u16)address_type, 449 (__force __u16)be_start_address, 450 buffer, write_length); 451 if (status) { 452 dev_err(dev, "%s - ERROR %d\n", __func__, status); 453 return status; 454 } 455 456 length -= write_length; 457 start_address += write_length; 458 buffer += write_length; 459 } 460 return status; 461 } 462 463 /* Examine the UMP DMA registers and LSR 464 * 465 * Check the MSBit of the X and Y DMA byte count registers. 466 * A zero in this bit indicates that the TX DMA buffers are empty 467 * then check the TX Empty bit in the UART. 468 */ 469 static int tx_active(struct edgeport_port *port) 470 { 471 int status; 472 struct out_endpoint_desc_block *oedb; 473 __u8 *lsr; 474 int bytes_left = 0; 475 476 oedb = kmalloc(sizeof(*oedb), GFP_KERNEL); 477 if (!oedb) { 478 dev_err(&port->port->dev, "%s - out of memory\n", __func__); 479 return -ENOMEM; 480 } 481 482 lsr = kmalloc(1, GFP_KERNEL); /* Sigh, that's right, just one byte, 483 as not all platforms can do DMA 484 from stack */ 485 if (!lsr) { 486 kfree(oedb); 487 return -ENOMEM; 488 } 489 /* Read the DMA Count Registers */ 490 status = read_ram(port->port->serial->dev, port->dma_address, 491 sizeof(*oedb), (void *)oedb); 492 if (status) 493 goto exit_is_tx_active; 494 495 dev_dbg(&port->port->dev, "%s - XByteCount 0x%X\n", __func__, oedb->XByteCount); 496 497 /* and the LSR */ 498 status = read_ram(port->port->serial->dev, 499 port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr); 500 501 if (status) 502 goto exit_is_tx_active; 503 dev_dbg(&port->port->dev, "%s - LSR = 0x%X\n", __func__, *lsr); 504 505 /* If either buffer has data or we are transmitting then return TRUE */ 506 if ((oedb->XByteCount & 0x80) != 0) 507 bytes_left += 64; 508 509 if ((*lsr & UMP_UART_LSR_TX_MASK) == 0) 510 bytes_left += 1; 511 512 /* We return Not Active if we get any kind of error */ 513 exit_is_tx_active: 514 dev_dbg(&port->port->dev, "%s - return %d\n", __func__, bytes_left); 515 516 kfree(lsr); 517 kfree(oedb); 518 return bytes_left; 519 } 520 521 static int choose_config(struct usb_device *dev) 522 { 523 /* 524 * There may be multiple configurations on this device, in which case 525 * we would need to read and parse all of them to find out which one 526 * we want. However, we just support one config at this point, 527 * configuration # 1, which is Config Descriptor 0. 528 */ 529 530 dev_dbg(&dev->dev, "%s - Number of Interfaces = %d\n", 531 __func__, dev->config->desc.bNumInterfaces); 532 dev_dbg(&dev->dev, "%s - MAX Power = %d\n", 533 __func__, dev->config->desc.bMaxPower * 2); 534 535 if (dev->config->desc.bNumInterfaces != 1) { 536 dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", __func__); 537 return -ENODEV; 538 } 539 540 return 0; 541 } 542 543 static int read_rom(struct edgeport_serial *serial, 544 int start_address, int length, __u8 *buffer) 545 { 546 int status; 547 548 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { 549 status = read_download_mem(serial->serial->dev, 550 start_address, 551 length, 552 serial->TI_I2C_Type, 553 buffer); 554 } else { 555 status = read_boot_mem(serial, start_address, length, 556 buffer); 557 } 558 return status; 559 } 560 561 static int write_rom(struct edgeport_serial *serial, int start_address, 562 int length, __u8 *buffer) 563 { 564 if (serial->product_info.TiMode == TI_MODE_BOOT) 565 return write_boot_mem(serial, start_address, length, 566 buffer); 567 568 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) 569 return write_i2c_mem(serial, start_address, length, 570 serial->TI_I2C_Type, buffer); 571 return -EINVAL; 572 } 573 574 575 576 /* Read a descriptor header from I2C based on type */ 577 static int get_descriptor_addr(struct edgeport_serial *serial, 578 int desc_type, struct ti_i2c_desc *rom_desc) 579 { 580 int start_address; 581 int status; 582 583 /* Search for requested descriptor in I2C */ 584 start_address = 2; 585 do { 586 status = read_rom(serial, 587 start_address, 588 sizeof(struct ti_i2c_desc), 589 (__u8 *)rom_desc); 590 if (status) 591 return 0; 592 593 if (rom_desc->Type == desc_type) 594 return start_address; 595 596 start_address = start_address + sizeof(struct ti_i2c_desc) 597 + rom_desc->Size; 598 599 } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type); 600 601 return 0; 602 } 603 604 /* Validate descriptor checksum */ 605 static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer) 606 { 607 __u16 i; 608 __u8 cs = 0; 609 610 for (i = 0; i < rom_desc->Size; i++) 611 cs = (__u8)(cs + buffer[i]); 612 613 if (cs != rom_desc->CheckSum) { 614 pr_debug("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs); 615 return -EINVAL; 616 } 617 return 0; 618 } 619 620 /* Make sure that the I2C image is good */ 621 static int check_i2c_image(struct edgeport_serial *serial) 622 { 623 struct device *dev = &serial->serial->dev->dev; 624 int status = 0; 625 struct ti_i2c_desc *rom_desc; 626 int start_address = 2; 627 __u8 *buffer; 628 __u16 ttype; 629 630 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 631 if (!rom_desc) { 632 dev_err(dev, "%s - out of memory\n", __func__); 633 return -ENOMEM; 634 } 635 buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL); 636 if (!buffer) { 637 dev_err(dev, "%s - out of memory when allocating buffer\n", 638 __func__); 639 kfree(rom_desc); 640 return -ENOMEM; 641 } 642 643 /* Read the first byte (Signature0) must be 0x52 or 0x10 */ 644 status = read_rom(serial, 0, 1, buffer); 645 if (status) 646 goto out; 647 648 if (*buffer != UMP5152 && *buffer != UMP3410) { 649 dev_err(dev, "%s - invalid buffer signature\n", __func__); 650 status = -ENODEV; 651 goto out; 652 } 653 654 do { 655 /* Validate the I2C */ 656 status = read_rom(serial, 657 start_address, 658 sizeof(struct ti_i2c_desc), 659 (__u8 *)rom_desc); 660 if (status) 661 break; 662 663 if ((start_address + sizeof(struct ti_i2c_desc) + 664 rom_desc->Size) > TI_MAX_I2C_SIZE) { 665 status = -ENODEV; 666 dev_dbg(dev, "%s - structure too big, erroring out.\n", __func__); 667 break; 668 } 669 670 dev_dbg(dev, "%s Type = 0x%x\n", __func__, rom_desc->Type); 671 672 /* Skip type 2 record */ 673 ttype = rom_desc->Type & 0x0f; 674 if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC 675 && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) { 676 /* Read the descriptor data */ 677 status = read_rom(serial, start_address + 678 sizeof(struct ti_i2c_desc), 679 rom_desc->Size, buffer); 680 if (status) 681 break; 682 683 status = valid_csum(rom_desc, buffer); 684 if (status) 685 break; 686 } 687 start_address = start_address + sizeof(struct ti_i2c_desc) + 688 rom_desc->Size; 689 690 } while ((rom_desc->Type != I2C_DESC_TYPE_ION) && 691 (start_address < TI_MAX_I2C_SIZE)); 692 693 if ((rom_desc->Type != I2C_DESC_TYPE_ION) || 694 (start_address > TI_MAX_I2C_SIZE)) 695 status = -ENODEV; 696 697 out: 698 kfree(buffer); 699 kfree(rom_desc); 700 return status; 701 } 702 703 static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer) 704 { 705 int status; 706 int start_address; 707 struct ti_i2c_desc *rom_desc; 708 struct edge_ti_manuf_descriptor *desc; 709 struct device *dev = &serial->serial->dev->dev; 710 711 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 712 if (!rom_desc) { 713 dev_err(dev, "%s - out of memory\n", __func__); 714 return -ENOMEM; 715 } 716 start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION, 717 rom_desc); 718 719 if (!start_address) { 720 dev_dbg(dev, "%s - Edge Descriptor not found in I2C\n", __func__); 721 status = -ENODEV; 722 goto exit; 723 } 724 725 /* Read the descriptor data */ 726 status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc), 727 rom_desc->Size, buffer); 728 if (status) 729 goto exit; 730 731 status = valid_csum(rom_desc, buffer); 732 733 desc = (struct edge_ti_manuf_descriptor *)buffer; 734 dev_dbg(dev, "%s - IonConfig 0x%x\n", __func__, desc->IonConfig); 735 dev_dbg(dev, "%s - Version %d\n", __func__, desc->Version); 736 dev_dbg(dev, "%s - Cpu/Board 0x%x\n", __func__, desc->CpuRev_BoardRev); 737 dev_dbg(dev, "%s - NumPorts %d\n", __func__, desc->NumPorts); 738 dev_dbg(dev, "%s - NumVirtualPorts %d\n", __func__, desc->NumVirtualPorts); 739 dev_dbg(dev, "%s - TotalPorts %d\n", __func__, desc->TotalPorts); 740 741 exit: 742 kfree(rom_desc); 743 return status; 744 } 745 746 /* Build firmware header used for firmware update */ 747 static int build_i2c_fw_hdr(__u8 *header, struct device *dev) 748 { 749 __u8 *buffer; 750 int buffer_size; 751 int i; 752 int err; 753 __u8 cs = 0; 754 struct ti_i2c_desc *i2c_header; 755 struct ti_i2c_image_header *img_header; 756 struct ti_i2c_firmware_rec *firmware_rec; 757 const struct firmware *fw; 758 const char *fw_name = "edgeport/down3.bin"; 759 760 /* In order to update the I2C firmware we must change the type 2 record 761 * to type 0xF2. This will force the UMP to come up in Boot Mode. 762 * Then while in boot mode, the driver will download the latest 763 * firmware (padded to 15.5k) into the UMP ram. And finally when the 764 * device comes back up in download mode the driver will cause the new 765 * firmware to be copied from the UMP Ram to I2C and the firmware will 766 * update the record type from 0xf2 to 0x02. 767 */ 768 769 /* Allocate a 15.5k buffer + 2 bytes for version number 770 * (Firmware Record) */ 771 buffer_size = (((1024 * 16) - 512 ) + 772 sizeof(struct ti_i2c_firmware_rec)); 773 774 buffer = kmalloc(buffer_size, GFP_KERNEL); 775 if (!buffer) { 776 dev_err(dev, "%s - out of memory\n", __func__); 777 return -ENOMEM; 778 } 779 780 // Set entire image of 0xffs 781 memset(buffer, 0xff, buffer_size); 782 783 err = request_firmware(&fw, fw_name, dev); 784 if (err) { 785 dev_err(dev, "Failed to load image \"%s\" err %d\n", 786 fw_name, err); 787 kfree(buffer); 788 return err; 789 } 790 791 /* Save Download Version Number */ 792 OperationalMajorVersion = fw->data[0]; 793 OperationalMinorVersion = fw->data[1]; 794 OperationalBuildNumber = fw->data[2] | (fw->data[3] << 8); 795 796 /* Copy version number into firmware record */ 797 firmware_rec = (struct ti_i2c_firmware_rec *)buffer; 798 799 firmware_rec->Ver_Major = OperationalMajorVersion; 800 firmware_rec->Ver_Minor = OperationalMinorVersion; 801 802 /* Pointer to fw_down memory image */ 803 img_header = (struct ti_i2c_image_header *)&fw->data[4]; 804 805 memcpy(buffer + sizeof(struct ti_i2c_firmware_rec), 806 &fw->data[4 + sizeof(struct ti_i2c_image_header)], 807 le16_to_cpu(img_header->Length)); 808 809 release_firmware(fw); 810 811 for (i=0; i < buffer_size; i++) { 812 cs = (__u8)(cs + buffer[i]); 813 } 814 815 kfree(buffer); 816 817 /* Build new header */ 818 i2c_header = (struct ti_i2c_desc *)header; 819 firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data; 820 821 i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK; 822 i2c_header->Size = (__u16)buffer_size; 823 i2c_header->CheckSum = cs; 824 firmware_rec->Ver_Major = OperationalMajorVersion; 825 firmware_rec->Ver_Minor = OperationalMinorVersion; 826 827 return 0; 828 } 829 830 /* Try to figure out what type of I2c we have */ 831 static int i2c_type_bootmode(struct edgeport_serial *serial) 832 { 833 struct device *dev = &serial->serial->dev->dev; 834 int status; 835 u8 *data; 836 837 data = kmalloc(1, GFP_KERNEL); 838 if (!data) { 839 dev_err(dev, "%s - out of memory\n", __func__); 840 return -ENOMEM; 841 } 842 843 /* Try to read type 2 */ 844 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, 845 DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01); 846 if (status) 847 dev_dbg(dev, "%s - read 2 status error = %d\n", __func__, status); 848 else 849 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data); 850 if ((!status) && (*data == UMP5152 || *data == UMP3410)) { 851 dev_dbg(dev, "%s - ROM_TYPE_II\n", __func__); 852 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 853 goto out; 854 } 855 856 /* Try to read type 3 */ 857 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, 858 DTK_ADDR_SPACE_I2C_TYPE_III, 0, data, 0x01); 859 if (status) 860 dev_dbg(dev, "%s - read 3 status error = %d\n", __func__, status); 861 else 862 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data); 863 if ((!status) && (*data == UMP5152 || *data == UMP3410)) { 864 dev_dbg(dev, "%s - ROM_TYPE_III\n", __func__); 865 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III; 866 goto out; 867 } 868 869 dev_dbg(dev, "%s - Unknown\n", __func__); 870 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 871 status = -ENODEV; 872 out: 873 kfree(data); 874 return status; 875 } 876 877 static int bulk_xfer(struct usb_serial *serial, void *buffer, 878 int length, int *num_sent) 879 { 880 int status; 881 882 status = usb_bulk_msg(serial->dev, 883 usb_sndbulkpipe(serial->dev, 884 serial->port[0]->bulk_out_endpointAddress), 885 buffer, length, num_sent, 1000); 886 return status; 887 } 888 889 /* Download given firmware image to the device (IN BOOT MODE) */ 890 static int download_code(struct edgeport_serial *serial, __u8 *image, 891 int image_length) 892 { 893 int status = 0; 894 int pos; 895 int transfer; 896 int done; 897 898 /* Transfer firmware image */ 899 for (pos = 0; pos < image_length; ) { 900 /* Read the next buffer from file */ 901 transfer = image_length - pos; 902 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE) 903 transfer = EDGE_FW_BULK_MAX_PACKET_SIZE; 904 905 /* Transfer data */ 906 status = bulk_xfer(serial->serial, &image[pos], 907 transfer, &done); 908 if (status) 909 break; 910 /* Advance buffer pointer */ 911 pos += done; 912 } 913 914 return status; 915 } 916 917 /* FIXME!!! */ 918 static int config_boot_dev(struct usb_device *dev) 919 { 920 return 0; 921 } 922 923 static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc) 924 { 925 return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev); 926 } 927 928 /** 929 * DownloadTIFirmware - Download run-time operating firmware to the TI5052 930 * 931 * This routine downloads the main operating code into the TI5052, using the 932 * boot code already burned into E2PROM or ROM. 933 */ 934 static int download_fw(struct edgeport_serial *serial) 935 { 936 struct device *dev = &serial->serial->dev->dev; 937 int status = 0; 938 int start_address; 939 struct edge_ti_manuf_descriptor *ti_manuf_desc; 940 struct usb_interface_descriptor *interface; 941 int download_cur_ver; 942 int download_new_ver; 943 944 /* This routine is entered by both the BOOT mode and the Download mode 945 * We can determine which code is running by the reading the config 946 * descriptor and if we have only one bulk pipe it is in boot mode 947 */ 948 serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP; 949 950 /* Default to type 2 i2c */ 951 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 952 953 status = choose_config(serial->serial->dev); 954 if (status) 955 return status; 956 957 interface = &serial->serial->interface->cur_altsetting->desc; 958 if (!interface) { 959 dev_err(dev, "%s - no interface set, error!\n", __func__); 960 return -ENODEV; 961 } 962 963 /* 964 * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING 965 * if we have more than one endpoint we are definitely in download 966 * mode 967 */ 968 if (interface->bNumEndpoints > 1) 969 serial->product_info.TiMode = TI_MODE_DOWNLOAD; 970 else 971 /* Otherwise we will remain in configuring mode */ 972 serial->product_info.TiMode = TI_MODE_CONFIGURING; 973 974 /********************************************************************/ 975 /* Download Mode */ 976 /********************************************************************/ 977 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { 978 struct ti_i2c_desc *rom_desc; 979 980 dev_dbg(dev, "%s - RUNNING IN DOWNLOAD MODE\n", __func__); 981 982 status = check_i2c_image(serial); 983 if (status) { 984 dev_dbg(dev, "%s - DOWNLOAD MODE -- BAD I2C\n", __func__); 985 return status; 986 } 987 988 /* Validate Hardware version number 989 * Read Manufacturing Descriptor from TI Based Edgeport 990 */ 991 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL); 992 if (!ti_manuf_desc) { 993 dev_err(dev, "%s - out of memory.\n", __func__); 994 return -ENOMEM; 995 } 996 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc); 997 if (status) { 998 kfree(ti_manuf_desc); 999 return status; 1000 } 1001 1002 /* Check version number of ION descriptor */ 1003 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { 1004 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n", 1005 __func__, ti_cpu_rev(ti_manuf_desc)); 1006 kfree(ti_manuf_desc); 1007 return -EINVAL; 1008 } 1009 1010 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 1011 if (!rom_desc) { 1012 dev_err(dev, "%s - out of memory.\n", __func__); 1013 kfree(ti_manuf_desc); 1014 return -ENOMEM; 1015 } 1016 1017 /* Search for type 2 record (firmware record) */ 1018 start_address = get_descriptor_addr(serial, 1019 I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc); 1020 if (start_address != 0) { 1021 struct ti_i2c_firmware_rec *firmware_version; 1022 u8 *record; 1023 1024 dev_dbg(dev, "%s - Found Type FIRMWARE (Type 2) record\n", __func__); 1025 1026 firmware_version = kmalloc(sizeof(*firmware_version), 1027 GFP_KERNEL); 1028 if (!firmware_version) { 1029 dev_err(dev, "%s - out of memory.\n", __func__); 1030 kfree(rom_desc); 1031 kfree(ti_manuf_desc); 1032 return -ENOMEM; 1033 } 1034 1035 /* Validate version number 1036 * Read the descriptor data 1037 */ 1038 status = read_rom(serial, start_address + 1039 sizeof(struct ti_i2c_desc), 1040 sizeof(struct ti_i2c_firmware_rec), 1041 (__u8 *)firmware_version); 1042 if (status) { 1043 kfree(firmware_version); 1044 kfree(rom_desc); 1045 kfree(ti_manuf_desc); 1046 return status; 1047 } 1048 1049 /* Check version number of download with current 1050 version in I2c */ 1051 download_cur_ver = (firmware_version->Ver_Major << 8) + 1052 (firmware_version->Ver_Minor); 1053 download_new_ver = (OperationalMajorVersion << 8) + 1054 (OperationalMinorVersion); 1055 1056 dev_dbg(dev, "%s - >> FW Versions Device %d.%d Driver %d.%d\n", 1057 __func__, firmware_version->Ver_Major, 1058 firmware_version->Ver_Minor, 1059 OperationalMajorVersion, 1060 OperationalMinorVersion); 1061 1062 /* Check if we have an old version in the I2C and 1063 update if necessary */ 1064 if (download_cur_ver < download_new_ver) { 1065 dev_dbg(dev, "%s - Update I2C dld from %d.%d to %d.%d\n", 1066 __func__, 1067 firmware_version->Ver_Major, 1068 firmware_version->Ver_Minor, 1069 OperationalMajorVersion, 1070 OperationalMinorVersion); 1071 1072 record = kmalloc(1, GFP_KERNEL); 1073 if (!record) { 1074 dev_err(dev, "%s - out of memory.\n", 1075 __func__); 1076 kfree(firmware_version); 1077 kfree(rom_desc); 1078 kfree(ti_manuf_desc); 1079 return -ENOMEM; 1080 } 1081 /* In order to update the I2C firmware we must 1082 * change the type 2 record to type 0xF2. This 1083 * will force the UMP to come up in Boot Mode. 1084 * Then while in boot mode, the driver will 1085 * download the latest firmware (padded to 1086 * 15.5k) into the UMP ram. Finally when the 1087 * device comes back up in download mode the 1088 * driver will cause the new firmware to be 1089 * copied from the UMP Ram to I2C and the 1090 * firmware will update the record type from 1091 * 0xf2 to 0x02. 1092 */ 1093 *record = I2C_DESC_TYPE_FIRMWARE_BLANK; 1094 1095 /* Change the I2C Firmware record type to 1096 0xf2 to trigger an update */ 1097 status = write_rom(serial, start_address, 1098 sizeof(*record), record); 1099 if (status) { 1100 kfree(record); 1101 kfree(firmware_version); 1102 kfree(rom_desc); 1103 kfree(ti_manuf_desc); 1104 return status; 1105 } 1106 1107 /* verify the write -- must do this in order 1108 * for write to complete before we do the 1109 * hardware reset 1110 */ 1111 status = read_rom(serial, 1112 start_address, 1113 sizeof(*record), 1114 record); 1115 if (status) { 1116 kfree(record); 1117 kfree(firmware_version); 1118 kfree(rom_desc); 1119 kfree(ti_manuf_desc); 1120 return status; 1121 } 1122 1123 if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) { 1124 dev_err(dev, "%s - error resetting device\n", __func__); 1125 kfree(record); 1126 kfree(firmware_version); 1127 kfree(rom_desc); 1128 kfree(ti_manuf_desc); 1129 return -ENODEV; 1130 } 1131 1132 dev_dbg(dev, "%s - HARDWARE RESET\n", __func__); 1133 1134 /* Reset UMP -- Back to BOOT MODE */ 1135 status = ti_vsend_sync(serial->serial->dev, 1136 UMPC_HARDWARE_RESET, 1137 0, 0, NULL, 0); 1138 1139 dev_dbg(dev, "%s - HARDWARE RESET return %d\n", __func__, status); 1140 1141 /* return an error on purpose. */ 1142 kfree(record); 1143 kfree(firmware_version); 1144 kfree(rom_desc); 1145 kfree(ti_manuf_desc); 1146 return -ENODEV; 1147 } 1148 kfree(firmware_version); 1149 } 1150 /* Search for type 0xF2 record (firmware blank record) */ 1151 else if ((start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) { 1152 #define HEADER_SIZE (sizeof(struct ti_i2c_desc) + \ 1153 sizeof(struct ti_i2c_firmware_rec)) 1154 __u8 *header; 1155 __u8 *vheader; 1156 1157 header = kmalloc(HEADER_SIZE, GFP_KERNEL); 1158 if (!header) { 1159 dev_err(dev, "%s - out of memory.\n", __func__); 1160 kfree(rom_desc); 1161 kfree(ti_manuf_desc); 1162 return -ENOMEM; 1163 } 1164 1165 vheader = kmalloc(HEADER_SIZE, GFP_KERNEL); 1166 if (!vheader) { 1167 dev_err(dev, "%s - out of memory.\n", __func__); 1168 kfree(header); 1169 kfree(rom_desc); 1170 kfree(ti_manuf_desc); 1171 return -ENOMEM; 1172 } 1173 1174 dev_dbg(dev, "%s - Found Type BLANK FIRMWARE (Type F2) record\n", __func__); 1175 1176 /* 1177 * In order to update the I2C firmware we must change 1178 * the type 2 record to type 0xF2. This will force the 1179 * UMP to come up in Boot Mode. Then while in boot 1180 * mode, the driver will download the latest firmware 1181 * (padded to 15.5k) into the UMP ram. Finally when the 1182 * device comes back up in download mode the driver 1183 * will cause the new firmware to be copied from the 1184 * UMP Ram to I2C and the firmware will update the 1185 * record type from 0xf2 to 0x02. 1186 */ 1187 status = build_i2c_fw_hdr(header, dev); 1188 if (status) { 1189 kfree(vheader); 1190 kfree(header); 1191 kfree(rom_desc); 1192 kfree(ti_manuf_desc); 1193 return -EINVAL; 1194 } 1195 1196 /* Update I2C with type 0xf2 record with correct 1197 size and checksum */ 1198 status = write_rom(serial, 1199 start_address, 1200 HEADER_SIZE, 1201 header); 1202 if (status) { 1203 kfree(vheader); 1204 kfree(header); 1205 kfree(rom_desc); 1206 kfree(ti_manuf_desc); 1207 return -EINVAL; 1208 } 1209 1210 /* verify the write -- must do this in order for 1211 write to complete before we do the hardware reset */ 1212 status = read_rom(serial, start_address, 1213 HEADER_SIZE, vheader); 1214 1215 if (status) { 1216 dev_dbg(dev, "%s - can't read header back\n", __func__); 1217 kfree(vheader); 1218 kfree(header); 1219 kfree(rom_desc); 1220 kfree(ti_manuf_desc); 1221 return status; 1222 } 1223 if (memcmp(vheader, header, HEADER_SIZE)) { 1224 dev_dbg(dev, "%s - write download record failed\n", __func__); 1225 kfree(vheader); 1226 kfree(header); 1227 kfree(rom_desc); 1228 kfree(ti_manuf_desc); 1229 return -EINVAL; 1230 } 1231 1232 kfree(vheader); 1233 kfree(header); 1234 1235 dev_dbg(dev, "%s - Start firmware update\n", __func__); 1236 1237 /* Tell firmware to copy download image into I2C */ 1238 status = ti_vsend_sync(serial->serial->dev, 1239 UMPC_COPY_DNLD_TO_I2C, 0, 0, NULL, 0); 1240 1241 dev_dbg(dev, "%s - Update complete 0x%x\n", __func__, status); 1242 if (status) { 1243 dev_err(dev, 1244 "%s - UMPC_COPY_DNLD_TO_I2C failed\n", 1245 __func__); 1246 kfree(rom_desc); 1247 kfree(ti_manuf_desc); 1248 return status; 1249 } 1250 } 1251 1252 // The device is running the download code 1253 kfree(rom_desc); 1254 kfree(ti_manuf_desc); 1255 return 0; 1256 } 1257 1258 /********************************************************************/ 1259 /* Boot Mode */ 1260 /********************************************************************/ 1261 dev_dbg(dev, "%s - RUNNING IN BOOT MODE\n", __func__); 1262 1263 /* Configure the TI device so we can use the BULK pipes for download */ 1264 status = config_boot_dev(serial->serial->dev); 1265 if (status) 1266 return status; 1267 1268 if (le16_to_cpu(serial->serial->dev->descriptor.idVendor) 1269 != USB_VENDOR_ID_ION) { 1270 dev_dbg(dev, "%s - VID = 0x%x\n", __func__, 1271 le16_to_cpu(serial->serial->dev->descriptor.idVendor)); 1272 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 1273 goto stayinbootmode; 1274 } 1275 1276 /* We have an ION device (I2c Must be programmed) 1277 Determine I2C image type */ 1278 if (i2c_type_bootmode(serial)) 1279 goto stayinbootmode; 1280 1281 /* Check for ION Vendor ID and that the I2C is valid */ 1282 if (!check_i2c_image(serial)) { 1283 struct ti_i2c_image_header *header; 1284 int i; 1285 __u8 cs = 0; 1286 __u8 *buffer; 1287 int buffer_size; 1288 int err; 1289 const struct firmware *fw; 1290 const char *fw_name = "edgeport/down3.bin"; 1291 1292 /* Validate Hardware version number 1293 * Read Manufacturing Descriptor from TI Based Edgeport 1294 */ 1295 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL); 1296 if (!ti_manuf_desc) { 1297 dev_err(dev, "%s - out of memory.\n", __func__); 1298 return -ENOMEM; 1299 } 1300 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc); 1301 if (status) { 1302 kfree(ti_manuf_desc); 1303 goto stayinbootmode; 1304 } 1305 1306 /* Check for version 2 */ 1307 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { 1308 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n", 1309 __func__, ti_cpu_rev(ti_manuf_desc)); 1310 kfree(ti_manuf_desc); 1311 goto stayinbootmode; 1312 } 1313 1314 kfree(ti_manuf_desc); 1315 1316 /* 1317 * In order to update the I2C firmware we must change the type 1318 * 2 record to type 0xF2. This will force the UMP to come up 1319 * in Boot Mode. Then while in boot mode, the driver will 1320 * download the latest firmware (padded to 15.5k) into the 1321 * UMP ram. Finally when the device comes back up in download 1322 * mode the driver will cause the new firmware to be copied 1323 * from the UMP Ram to I2C and the firmware will update the 1324 * record type from 0xf2 to 0x02. 1325 * 1326 * Do we really have to copy the whole firmware image, 1327 * or could we do this in place! 1328 */ 1329 1330 /* Allocate a 15.5k buffer + 3 byte header */ 1331 buffer_size = (((1024 * 16) - 512) + 1332 sizeof(struct ti_i2c_image_header)); 1333 buffer = kmalloc(buffer_size, GFP_KERNEL); 1334 if (!buffer) { 1335 dev_err(dev, "%s - out of memory\n", __func__); 1336 return -ENOMEM; 1337 } 1338 1339 /* Initialize the buffer to 0xff (pad the buffer) */ 1340 memset(buffer, 0xff, buffer_size); 1341 1342 err = request_firmware(&fw, fw_name, dev); 1343 if (err) { 1344 dev_err(dev, "Failed to load image \"%s\" err %d\n", 1345 fw_name, err); 1346 kfree(buffer); 1347 return err; 1348 } 1349 memcpy(buffer, &fw->data[4], fw->size - 4); 1350 release_firmware(fw); 1351 1352 for (i = sizeof(struct ti_i2c_image_header); 1353 i < buffer_size; i++) { 1354 cs = (__u8)(cs + buffer[i]); 1355 } 1356 1357 header = (struct ti_i2c_image_header *)buffer; 1358 1359 /* update length and checksum after padding */ 1360 header->Length = cpu_to_le16((__u16)(buffer_size - 1361 sizeof(struct ti_i2c_image_header))); 1362 header->CheckSum = cs; 1363 1364 /* Download the operational code */ 1365 dev_dbg(dev, "%s - Downloading operational code image (TI UMP)\n", __func__); 1366 status = download_code(serial, buffer, buffer_size); 1367 1368 kfree(buffer); 1369 1370 if (status) { 1371 dev_dbg(dev, "%s - Error downloading operational code image\n", __func__); 1372 return status; 1373 } 1374 1375 /* Device will reboot */ 1376 serial->product_info.TiMode = TI_MODE_TRANSITIONING; 1377 1378 dev_dbg(dev, "%s - Download successful -- Device rebooting...\n", __func__); 1379 1380 /* return an error on purpose */ 1381 return -ENODEV; 1382 } 1383 1384 stayinbootmode: 1385 /* Eprom is invalid or blank stay in boot mode */ 1386 dev_dbg(dev, "%s - STAYING IN BOOT MODE\n", __func__); 1387 serial->product_info.TiMode = TI_MODE_BOOT; 1388 1389 return 0; 1390 } 1391 1392 1393 static int ti_do_config(struct edgeport_port *port, int feature, int on) 1394 { 1395 int port_number = port->port->port_number; 1396 1397 on = !!on; /* 1 or 0 not bitmask */ 1398 return send_cmd(port->port->serial->dev, 1399 feature, (__u8)(UMPM_UART1_PORT + port_number), 1400 on, NULL, 0); 1401 } 1402 1403 1404 static int restore_mcr(struct edgeport_port *port, __u8 mcr) 1405 { 1406 int status = 0; 1407 1408 dev_dbg(&port->port->dev, "%s - %x\n", __func__, mcr); 1409 1410 status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR); 1411 if (status) 1412 return status; 1413 status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS); 1414 if (status) 1415 return status; 1416 return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK); 1417 } 1418 1419 /* Convert TI LSR to standard UART flags */ 1420 static __u8 map_line_status(__u8 ti_lsr) 1421 { 1422 __u8 lsr = 0; 1423 1424 #define MAP_FLAG(flagUmp, flagUart) \ 1425 if (ti_lsr & flagUmp) \ 1426 lsr |= flagUart; 1427 1428 MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */ 1429 MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */ 1430 MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */ 1431 MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */ 1432 MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* rx data available */ 1433 MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* tx hold reg empty */ 1434 1435 #undef MAP_FLAG 1436 1437 return lsr; 1438 } 1439 1440 static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr) 1441 { 1442 struct async_icount *icount; 1443 struct tty_struct *tty; 1444 1445 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, msr); 1446 1447 if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | 1448 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { 1449 icount = &edge_port->port->icount; 1450 1451 /* update input line counters */ 1452 if (msr & EDGEPORT_MSR_DELTA_CTS) 1453 icount->cts++; 1454 if (msr & EDGEPORT_MSR_DELTA_DSR) 1455 icount->dsr++; 1456 if (msr & EDGEPORT_MSR_DELTA_CD) 1457 icount->dcd++; 1458 if (msr & EDGEPORT_MSR_DELTA_RI) 1459 icount->rng++; 1460 wake_up_interruptible(&edge_port->port->port.delta_msr_wait); 1461 } 1462 1463 /* Save the new modem status */ 1464 edge_port->shadow_msr = msr & 0xf0; 1465 1466 tty = tty_port_tty_get(&edge_port->port->port); 1467 /* handle CTS flow control */ 1468 if (tty && C_CRTSCTS(tty)) { 1469 if (msr & EDGEPORT_MSR_CTS) { 1470 tty->hw_stopped = 0; 1471 tty_wakeup(tty); 1472 } else { 1473 tty->hw_stopped = 1; 1474 } 1475 } 1476 tty_kref_put(tty); 1477 } 1478 1479 static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data, 1480 __u8 lsr, __u8 data) 1481 { 1482 struct async_icount *icount; 1483 __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR | 1484 LSR_FRM_ERR | LSR_BREAK)); 1485 1486 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, new_lsr); 1487 1488 edge_port->shadow_lsr = lsr; 1489 1490 if (new_lsr & LSR_BREAK) 1491 /* 1492 * Parity and Framing errors only count if they 1493 * occur exclusive of a break being received. 1494 */ 1495 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK); 1496 1497 /* Place LSR data byte into Rx buffer */ 1498 if (lsr_data) 1499 edge_tty_recv(edge_port->port, &data, 1); 1500 1501 /* update input line counters */ 1502 icount = &edge_port->port->icount; 1503 if (new_lsr & LSR_BREAK) 1504 icount->brk++; 1505 if (new_lsr & LSR_OVER_ERR) 1506 icount->overrun++; 1507 if (new_lsr & LSR_PAR_ERR) 1508 icount->parity++; 1509 if (new_lsr & LSR_FRM_ERR) 1510 icount->frame++; 1511 } 1512 1513 1514 static void edge_interrupt_callback(struct urb *urb) 1515 { 1516 struct edgeport_serial *edge_serial = urb->context; 1517 struct usb_serial_port *port; 1518 struct edgeport_port *edge_port; 1519 struct device *dev; 1520 unsigned char *data = urb->transfer_buffer; 1521 int length = urb->actual_length; 1522 int port_number; 1523 int function; 1524 int retval; 1525 __u8 lsr; 1526 __u8 msr; 1527 int status = urb->status; 1528 1529 switch (status) { 1530 case 0: 1531 /* success */ 1532 break; 1533 case -ECONNRESET: 1534 case -ENOENT: 1535 case -ESHUTDOWN: 1536 /* this urb is terminated, clean up */ 1537 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", 1538 __func__, status); 1539 return; 1540 default: 1541 dev_err(&urb->dev->dev, "%s - nonzero urb status received: " 1542 "%d\n", __func__, status); 1543 goto exit; 1544 } 1545 1546 if (!length) { 1547 dev_dbg(&urb->dev->dev, "%s - no data in urb\n", __func__); 1548 goto exit; 1549 } 1550 1551 dev = &edge_serial->serial->dev->dev; 1552 usb_serial_debug_data(dev, __func__, length, data); 1553 1554 if (length != 2) { 1555 dev_dbg(dev, "%s - expecting packet of size 2, got %d\n", __func__, length); 1556 goto exit; 1557 } 1558 1559 port_number = TIUMP_GET_PORT_FROM_CODE(data[0]); 1560 function = TIUMP_GET_FUNC_FROM_CODE(data[0]); 1561 dev_dbg(dev, "%s - port_number %d, function %d, info 0x%x\n", __func__, 1562 port_number, function, data[1]); 1563 port = edge_serial->serial->port[port_number]; 1564 edge_port = usb_get_serial_port_data(port); 1565 if (!edge_port) { 1566 dev_dbg(dev, "%s - edge_port not found\n", __func__); 1567 return; 1568 } 1569 switch (function) { 1570 case TIUMP_INTERRUPT_CODE_LSR: 1571 lsr = map_line_status(data[1]); 1572 if (lsr & UMP_UART_LSR_DATA_MASK) { 1573 /* Save the LSR event for bulk read 1574 completion routine */ 1575 dev_dbg(dev, "%s - LSR Event Port %u LSR Status = %02x\n", 1576 __func__, port_number, lsr); 1577 edge_port->lsr_event = 1; 1578 edge_port->lsr_mask = lsr; 1579 } else { 1580 dev_dbg(dev, "%s - ===== Port %d LSR Status = %02x ======\n", 1581 __func__, port_number, lsr); 1582 handle_new_lsr(edge_port, 0, lsr, 0); 1583 } 1584 break; 1585 1586 case TIUMP_INTERRUPT_CODE_MSR: /* MSR */ 1587 /* Copy MSR from UMP */ 1588 msr = data[1]; 1589 dev_dbg(dev, "%s - ===== Port %u MSR Status = %02x ======\n", 1590 __func__, port_number, msr); 1591 handle_new_msr(edge_port, msr); 1592 break; 1593 1594 default: 1595 dev_err(&urb->dev->dev, 1596 "%s - Unknown Interrupt code from UMP %x\n", 1597 __func__, data[1]); 1598 break; 1599 1600 } 1601 1602 exit: 1603 retval = usb_submit_urb(urb, GFP_ATOMIC); 1604 if (retval) 1605 dev_err(&urb->dev->dev, 1606 "%s - usb_submit_urb failed with result %d\n", 1607 __func__, retval); 1608 } 1609 1610 static void edge_bulk_in_callback(struct urb *urb) 1611 { 1612 struct edgeport_port *edge_port = urb->context; 1613 struct device *dev = &edge_port->port->dev; 1614 unsigned char *data = urb->transfer_buffer; 1615 int retval = 0; 1616 int port_number; 1617 int status = urb->status; 1618 1619 switch (status) { 1620 case 0: 1621 /* success */ 1622 break; 1623 case -ECONNRESET: 1624 case -ENOENT: 1625 case -ESHUTDOWN: 1626 /* this urb is terminated, clean up */ 1627 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status); 1628 return; 1629 default: 1630 dev_err(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", __func__, status); 1631 } 1632 1633 if (status == -EPIPE) 1634 goto exit; 1635 1636 if (status) { 1637 dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__); 1638 return; 1639 } 1640 1641 port_number = edge_port->port->port_number; 1642 1643 if (edge_port->lsr_event) { 1644 edge_port->lsr_event = 0; 1645 dev_dbg(dev, "%s ===== Port %u LSR Status = %02x, Data = %02x ======\n", 1646 __func__, port_number, edge_port->lsr_mask, *data); 1647 handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data); 1648 /* Adjust buffer length/pointer */ 1649 --urb->actual_length; 1650 ++data; 1651 } 1652 1653 if (urb->actual_length) { 1654 usb_serial_debug_data(dev, __func__, urb->actual_length, data); 1655 if (edge_port->close_pending) 1656 dev_dbg(dev, "%s - close pending, dropping data on the floor\n", 1657 __func__); 1658 else 1659 edge_tty_recv(edge_port->port, data, 1660 urb->actual_length); 1661 edge_port->port->icount.rx += urb->actual_length; 1662 } 1663 1664 exit: 1665 /* continue read unless stopped */ 1666 spin_lock(&edge_port->ep_lock); 1667 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) 1668 retval = usb_submit_urb(urb, GFP_ATOMIC); 1669 else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING) 1670 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED; 1671 1672 spin_unlock(&edge_port->ep_lock); 1673 if (retval) 1674 dev_err(dev, "%s - usb_submit_urb failed with result %d\n", __func__, retval); 1675 } 1676 1677 static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, 1678 int length) 1679 { 1680 int queued; 1681 1682 queued = tty_insert_flip_string(&port->port, data, length); 1683 if (queued < length) 1684 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n", 1685 __func__, length - queued); 1686 tty_flip_buffer_push(&port->port); 1687 } 1688 1689 static void edge_bulk_out_callback(struct urb *urb) 1690 { 1691 struct usb_serial_port *port = urb->context; 1692 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1693 int status = urb->status; 1694 struct tty_struct *tty; 1695 1696 edge_port->ep_write_urb_in_use = 0; 1697 1698 switch (status) { 1699 case 0: 1700 /* success */ 1701 break; 1702 case -ECONNRESET: 1703 case -ENOENT: 1704 case -ESHUTDOWN: 1705 /* this urb is terminated, clean up */ 1706 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", 1707 __func__, status); 1708 return; 1709 default: 1710 dev_err_console(port, "%s - nonzero write bulk status " 1711 "received: %d\n", __func__, status); 1712 } 1713 1714 /* send any buffered data */ 1715 tty = tty_port_tty_get(&port->port); 1716 edge_send(port, tty); 1717 tty_kref_put(tty); 1718 } 1719 1720 static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) 1721 { 1722 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1723 struct edgeport_serial *edge_serial; 1724 struct usb_device *dev; 1725 struct urb *urb; 1726 int port_number; 1727 int status; 1728 u16 open_settings; 1729 u8 transaction_timeout; 1730 1731 if (edge_port == NULL) 1732 return -ENODEV; 1733 1734 port_number = port->port_number; 1735 switch (port_number) { 1736 case 0: 1737 edge_port->uart_base = UMPMEM_BASE_UART1; 1738 edge_port->dma_address = UMPD_OEDB1_ADDRESS; 1739 break; 1740 case 1: 1741 edge_port->uart_base = UMPMEM_BASE_UART2; 1742 edge_port->dma_address = UMPD_OEDB2_ADDRESS; 1743 break; 1744 default: 1745 dev_err(&port->dev, "Unknown port number!!!\n"); 1746 return -ENODEV; 1747 } 1748 1749 dev_dbg(&port->dev, "%s - port_number = %d, uart_base = %04x, dma_address = %04x\n", 1750 __func__, port_number, edge_port->uart_base, edge_port->dma_address); 1751 1752 dev = port->serial->dev; 1753 1754 /* turn off loopback */ 1755 status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0); 1756 if (status) { 1757 dev_err(&port->dev, 1758 "%s - cannot send clear loopback command, %d\n", 1759 __func__, status); 1760 return status; 1761 } 1762 1763 /* set up the port settings */ 1764 if (tty) 1765 edge_set_termios(tty, port, &tty->termios); 1766 1767 /* open up the port */ 1768 1769 /* milliseconds to timeout for DMA transfer */ 1770 transaction_timeout = 2; 1771 1772 edge_port->ump_read_timeout = 1773 max(20, ((transaction_timeout * 3) / 2)); 1774 1775 /* milliseconds to timeout for DMA transfer */ 1776 open_settings = (u8)(UMP_DMA_MODE_CONTINOUS | 1777 UMP_PIPE_TRANS_TIMEOUT_ENA | 1778 (transaction_timeout << 2)); 1779 1780 dev_dbg(&port->dev, "%s - Sending UMPC_OPEN_PORT\n", __func__); 1781 1782 /* Tell TI to open and start the port */ 1783 status = send_cmd(dev, UMPC_OPEN_PORT, 1784 (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0); 1785 if (status) { 1786 dev_err(&port->dev, "%s - cannot send open command, %d\n", 1787 __func__, status); 1788 return status; 1789 } 1790 1791 /* Start the DMA? */ 1792 status = send_cmd(dev, UMPC_START_PORT, 1793 (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0); 1794 if (status) { 1795 dev_err(&port->dev, "%s - cannot send start DMA command, %d\n", 1796 __func__, status); 1797 return status; 1798 } 1799 1800 /* Clear TX and RX buffers in UMP */ 1801 status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN); 1802 if (status) { 1803 dev_err(&port->dev, 1804 "%s - cannot send clear buffers command, %d\n", 1805 __func__, status); 1806 return status; 1807 } 1808 1809 /* Read Initial MSR */ 1810 status = ti_vread_sync(dev, UMPC_READ_MSR, 0, 1811 (__u16)(UMPM_UART1_PORT + port_number), 1812 &edge_port->shadow_msr, 1); 1813 if (status) { 1814 dev_err(&port->dev, "%s - cannot send read MSR command, %d\n", 1815 __func__, status); 1816 return status; 1817 } 1818 1819 dev_dbg(&port->dev, "ShadowMSR 0x%X\n", edge_port->shadow_msr); 1820 1821 /* Set Initial MCR */ 1822 edge_port->shadow_mcr = MCR_RTS | MCR_DTR; 1823 dev_dbg(&port->dev, "ShadowMCR 0x%X\n", edge_port->shadow_mcr); 1824 1825 edge_serial = edge_port->edge_serial; 1826 if (mutex_lock_interruptible(&edge_serial->es_lock)) 1827 return -ERESTARTSYS; 1828 if (edge_serial->num_ports_open == 0) { 1829 /* we are the first port to open, post the interrupt urb */ 1830 urb = edge_serial->serial->port[0]->interrupt_in_urb; 1831 if (!urb) { 1832 dev_err(&port->dev, 1833 "%s - no interrupt urb present, exiting\n", 1834 __func__); 1835 status = -EINVAL; 1836 goto release_es_lock; 1837 } 1838 urb->context = edge_serial; 1839 status = usb_submit_urb(urb, GFP_KERNEL); 1840 if (status) { 1841 dev_err(&port->dev, 1842 "%s - usb_submit_urb failed with value %d\n", 1843 __func__, status); 1844 goto release_es_lock; 1845 } 1846 } 1847 1848 /* 1849 * reset the data toggle on the bulk endpoints to work around bug in 1850 * host controllers where things get out of sync some times 1851 */ 1852 usb_clear_halt(dev, port->write_urb->pipe); 1853 usb_clear_halt(dev, port->read_urb->pipe); 1854 1855 /* start up our bulk read urb */ 1856 urb = port->read_urb; 1857 if (!urb) { 1858 dev_err(&port->dev, "%s - no read urb present, exiting\n", 1859 __func__); 1860 status = -EINVAL; 1861 goto unlink_int_urb; 1862 } 1863 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; 1864 urb->context = edge_port; 1865 status = usb_submit_urb(urb, GFP_KERNEL); 1866 if (status) { 1867 dev_err(&port->dev, 1868 "%s - read bulk usb_submit_urb failed with value %d\n", 1869 __func__, status); 1870 goto unlink_int_urb; 1871 } 1872 1873 ++edge_serial->num_ports_open; 1874 1875 port->port.drain_delay = 1; 1876 1877 goto release_es_lock; 1878 1879 unlink_int_urb: 1880 if (edge_port->edge_serial->num_ports_open == 0) 1881 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 1882 release_es_lock: 1883 mutex_unlock(&edge_serial->es_lock); 1884 return status; 1885 } 1886 1887 static void edge_close(struct usb_serial_port *port) 1888 { 1889 struct edgeport_serial *edge_serial; 1890 struct edgeport_port *edge_port; 1891 struct usb_serial *serial = port->serial; 1892 unsigned long flags; 1893 int port_number; 1894 1895 edge_serial = usb_get_serial_data(port->serial); 1896 edge_port = usb_get_serial_port_data(port); 1897 if (edge_serial == NULL || edge_port == NULL) 1898 return; 1899 1900 /* The bulkreadcompletion routine will check 1901 * this flag and dump add read data */ 1902 edge_port->close_pending = 1; 1903 1904 usb_kill_urb(port->read_urb); 1905 usb_kill_urb(port->write_urb); 1906 edge_port->ep_write_urb_in_use = 0; 1907 spin_lock_irqsave(&edge_port->ep_lock, flags); 1908 kfifo_reset_out(&edge_port->write_fifo); 1909 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1910 1911 dev_dbg(&port->dev, "%s - send umpc_close_port\n", __func__); 1912 port_number = port->port_number; 1913 send_cmd(serial->dev, UMPC_CLOSE_PORT, 1914 (__u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0); 1915 1916 mutex_lock(&edge_serial->es_lock); 1917 --edge_port->edge_serial->num_ports_open; 1918 if (edge_port->edge_serial->num_ports_open <= 0) { 1919 /* last port is now closed, let's shut down our interrupt urb */ 1920 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 1921 edge_port->edge_serial->num_ports_open = 0; 1922 } 1923 mutex_unlock(&edge_serial->es_lock); 1924 edge_port->close_pending = 0; 1925 } 1926 1927 static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, 1928 const unsigned char *data, int count) 1929 { 1930 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1931 1932 if (count == 0) { 1933 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__); 1934 return 0; 1935 } 1936 1937 if (edge_port == NULL) 1938 return -ENODEV; 1939 if (edge_port->close_pending == 1) 1940 return -ENODEV; 1941 1942 count = kfifo_in_locked(&edge_port->write_fifo, data, count, 1943 &edge_port->ep_lock); 1944 edge_send(port, tty); 1945 1946 return count; 1947 } 1948 1949 static void edge_send(struct usb_serial_port *port, struct tty_struct *tty) 1950 { 1951 int count, result; 1952 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1953 unsigned long flags; 1954 1955 spin_lock_irqsave(&edge_port->ep_lock, flags); 1956 1957 if (edge_port->ep_write_urb_in_use) { 1958 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1959 return; 1960 } 1961 1962 count = kfifo_out(&edge_port->write_fifo, 1963 port->write_urb->transfer_buffer, 1964 port->bulk_out_size); 1965 1966 if (count == 0) { 1967 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1968 return; 1969 } 1970 1971 edge_port->ep_write_urb_in_use = 1; 1972 1973 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1974 1975 usb_serial_debug_data(&port->dev, __func__, count, port->write_urb->transfer_buffer); 1976 1977 /* set up our urb */ 1978 port->write_urb->transfer_buffer_length = count; 1979 1980 /* send the data out the bulk port */ 1981 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 1982 if (result) { 1983 dev_err_console(port, 1984 "%s - failed submitting write urb, error %d\n", 1985 __func__, result); 1986 edge_port->ep_write_urb_in_use = 0; 1987 /* TODO: reschedule edge_send */ 1988 } else 1989 edge_port->port->icount.tx += count; 1990 1991 /* wakeup any process waiting for writes to complete */ 1992 /* there is now more room in the buffer for new writes */ 1993 if (tty) 1994 tty_wakeup(tty); 1995 } 1996 1997 static int edge_write_room(struct tty_struct *tty) 1998 { 1999 struct usb_serial_port *port = tty->driver_data; 2000 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2001 int room = 0; 2002 unsigned long flags; 2003 2004 if (edge_port == NULL) 2005 return 0; 2006 if (edge_port->close_pending == 1) 2007 return 0; 2008 2009 spin_lock_irqsave(&edge_port->ep_lock, flags); 2010 room = kfifo_avail(&edge_port->write_fifo); 2011 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2012 2013 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room); 2014 return room; 2015 } 2016 2017 static int edge_chars_in_buffer(struct tty_struct *tty) 2018 { 2019 struct usb_serial_port *port = tty->driver_data; 2020 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2021 int chars = 0; 2022 unsigned long flags; 2023 if (edge_port == NULL) 2024 return 0; 2025 2026 spin_lock_irqsave(&edge_port->ep_lock, flags); 2027 chars = kfifo_len(&edge_port->write_fifo); 2028 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2029 2030 dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars); 2031 return chars; 2032 } 2033 2034 static bool edge_tx_empty(struct usb_serial_port *port) 2035 { 2036 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2037 int ret; 2038 2039 ret = tx_active(edge_port); 2040 if (ret > 0) 2041 return false; 2042 2043 return true; 2044 } 2045 2046 static void edge_throttle(struct tty_struct *tty) 2047 { 2048 struct usb_serial_port *port = tty->driver_data; 2049 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2050 int status; 2051 2052 if (edge_port == NULL) 2053 return; 2054 2055 /* if we are implementing XON/XOFF, send the stop character */ 2056 if (I_IXOFF(tty)) { 2057 unsigned char stop_char = STOP_CHAR(tty); 2058 status = edge_write(tty, port, &stop_char, 1); 2059 if (status <= 0) { 2060 dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status); 2061 } 2062 } 2063 2064 /* if we are implementing RTS/CTS, stop reads */ 2065 /* and the Edgeport will clear the RTS line */ 2066 if (C_CRTSCTS(tty)) 2067 stop_read(edge_port); 2068 2069 } 2070 2071 static void edge_unthrottle(struct tty_struct *tty) 2072 { 2073 struct usb_serial_port *port = tty->driver_data; 2074 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2075 int status; 2076 2077 if (edge_port == NULL) 2078 return; 2079 2080 /* if we are implementing XON/XOFF, send the start character */ 2081 if (I_IXOFF(tty)) { 2082 unsigned char start_char = START_CHAR(tty); 2083 status = edge_write(tty, port, &start_char, 1); 2084 if (status <= 0) { 2085 dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status); 2086 } 2087 } 2088 /* if we are implementing RTS/CTS, restart reads */ 2089 /* are the Edgeport will assert the RTS line */ 2090 if (C_CRTSCTS(tty)) { 2091 status = restart_read(edge_port); 2092 if (status) 2093 dev_err(&port->dev, 2094 "%s - read bulk usb_submit_urb failed: %d\n", 2095 __func__, status); 2096 } 2097 2098 } 2099 2100 static void stop_read(struct edgeport_port *edge_port) 2101 { 2102 unsigned long flags; 2103 2104 spin_lock_irqsave(&edge_port->ep_lock, flags); 2105 2106 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) 2107 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING; 2108 edge_port->shadow_mcr &= ~MCR_RTS; 2109 2110 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2111 } 2112 2113 static int restart_read(struct edgeport_port *edge_port) 2114 { 2115 struct urb *urb; 2116 int status = 0; 2117 unsigned long flags; 2118 2119 spin_lock_irqsave(&edge_port->ep_lock, flags); 2120 2121 if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) { 2122 urb = edge_port->port->read_urb; 2123 status = usb_submit_urb(urb, GFP_ATOMIC); 2124 } 2125 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; 2126 edge_port->shadow_mcr |= MCR_RTS; 2127 2128 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2129 2130 return status; 2131 } 2132 2133 static void change_port_settings(struct tty_struct *tty, 2134 struct edgeport_port *edge_port, struct ktermios *old_termios) 2135 { 2136 struct device *dev = &edge_port->port->dev; 2137 struct ump_uart_config *config; 2138 int baud; 2139 unsigned cflag; 2140 int status; 2141 int port_number = edge_port->port->port_number; 2142 2143 config = kmalloc (sizeof (*config), GFP_KERNEL); 2144 if (!config) { 2145 tty->termios = *old_termios; 2146 dev_err(dev, "%s - out of memory\n", __func__); 2147 return; 2148 } 2149 2150 cflag = tty->termios.c_cflag; 2151 2152 config->wFlags = 0; 2153 2154 /* These flags must be set */ 2155 config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT; 2156 config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR; 2157 config->bUartMode = (__u8)(edge_port->bUartMode); 2158 2159 switch (cflag & CSIZE) { 2160 case CS5: 2161 config->bDataBits = UMP_UART_CHAR5BITS; 2162 dev_dbg(dev, "%s - data bits = 5\n", __func__); 2163 break; 2164 case CS6: 2165 config->bDataBits = UMP_UART_CHAR6BITS; 2166 dev_dbg(dev, "%s - data bits = 6\n", __func__); 2167 break; 2168 case CS7: 2169 config->bDataBits = UMP_UART_CHAR7BITS; 2170 dev_dbg(dev, "%s - data bits = 7\n", __func__); 2171 break; 2172 default: 2173 case CS8: 2174 config->bDataBits = UMP_UART_CHAR8BITS; 2175 dev_dbg(dev, "%s - data bits = 8\n", __func__); 2176 break; 2177 } 2178 2179 if (cflag & PARENB) { 2180 if (cflag & PARODD) { 2181 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; 2182 config->bParity = UMP_UART_ODDPARITY; 2183 dev_dbg(dev, "%s - parity = odd\n", __func__); 2184 } else { 2185 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; 2186 config->bParity = UMP_UART_EVENPARITY; 2187 dev_dbg(dev, "%s - parity = even\n", __func__); 2188 } 2189 } else { 2190 config->bParity = UMP_UART_NOPARITY; 2191 dev_dbg(dev, "%s - parity = none\n", __func__); 2192 } 2193 2194 if (cflag & CSTOPB) { 2195 config->bStopBits = UMP_UART_STOPBIT2; 2196 dev_dbg(dev, "%s - stop bits = 2\n", __func__); 2197 } else { 2198 config->bStopBits = UMP_UART_STOPBIT1; 2199 dev_dbg(dev, "%s - stop bits = 1\n", __func__); 2200 } 2201 2202 /* figure out the flow control settings */ 2203 if (cflag & CRTSCTS) { 2204 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW; 2205 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW; 2206 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__); 2207 } else { 2208 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__); 2209 tty->hw_stopped = 0; 2210 restart_read(edge_port); 2211 } 2212 2213 /* if we are implementing XON/XOFF, set the start and stop 2214 character in the device */ 2215 config->cXon = START_CHAR(tty); 2216 config->cXoff = STOP_CHAR(tty); 2217 2218 /* if we are implementing INBOUND XON/XOFF */ 2219 if (I_IXOFF(tty)) { 2220 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X; 2221 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", 2222 __func__, config->cXon, config->cXoff); 2223 } else 2224 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__); 2225 2226 /* if we are implementing OUTBOUND XON/XOFF */ 2227 if (I_IXON(tty)) { 2228 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X; 2229 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", 2230 __func__, config->cXon, config->cXoff); 2231 } else 2232 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__); 2233 2234 tty->termios.c_cflag &= ~CMSPAR; 2235 2236 /* Round the baud rate */ 2237 baud = tty_get_baud_rate(tty); 2238 if (!baud) { 2239 /* pick a default, any default... */ 2240 baud = 9600; 2241 } else 2242 tty_encode_baud_rate(tty, baud, baud); 2243 2244 edge_port->baud_rate = baud; 2245 config->wBaudRate = (__u16)((461550L + baud/2) / baud); 2246 2247 /* FIXME: Recompute actual baud from divisor here */ 2248 2249 dev_dbg(dev, "%s - baud rate = %d, wBaudRate = %d\n", __func__, baud, config->wBaudRate); 2250 2251 dev_dbg(dev, "wBaudRate: %d\n", (int)(461550L / config->wBaudRate)); 2252 dev_dbg(dev, "wFlags: 0x%x\n", config->wFlags); 2253 dev_dbg(dev, "bDataBits: %d\n", config->bDataBits); 2254 dev_dbg(dev, "bParity: %d\n", config->bParity); 2255 dev_dbg(dev, "bStopBits: %d\n", config->bStopBits); 2256 dev_dbg(dev, "cXon: %d\n", config->cXon); 2257 dev_dbg(dev, "cXoff: %d\n", config->cXoff); 2258 dev_dbg(dev, "bUartMode: %d\n", config->bUartMode); 2259 2260 /* move the word values into big endian mode */ 2261 cpu_to_be16s(&config->wFlags); 2262 cpu_to_be16s(&config->wBaudRate); 2263 2264 status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG, 2265 (__u8)(UMPM_UART1_PORT + port_number), 2266 0, (__u8 *)config, sizeof(*config)); 2267 if (status) 2268 dev_dbg(dev, "%s - error %d when trying to write config to device\n", 2269 __func__, status); 2270 kfree(config); 2271 } 2272 2273 static void edge_set_termios(struct tty_struct *tty, 2274 struct usb_serial_port *port, struct ktermios *old_termios) 2275 { 2276 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2277 unsigned int cflag; 2278 2279 cflag = tty->termios.c_cflag; 2280 2281 dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__, 2282 tty->termios.c_cflag, tty->termios.c_iflag); 2283 dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__, 2284 old_termios->c_cflag, old_termios->c_iflag); 2285 2286 if (edge_port == NULL) 2287 return; 2288 /* change the port settings to the new ones specified */ 2289 change_port_settings(tty, edge_port, old_termios); 2290 } 2291 2292 static int edge_tiocmset(struct tty_struct *tty, 2293 unsigned int set, unsigned int clear) 2294 { 2295 struct usb_serial_port *port = tty->driver_data; 2296 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2297 unsigned int mcr; 2298 unsigned long flags; 2299 2300 spin_lock_irqsave(&edge_port->ep_lock, flags); 2301 mcr = edge_port->shadow_mcr; 2302 if (set & TIOCM_RTS) 2303 mcr |= MCR_RTS; 2304 if (set & TIOCM_DTR) 2305 mcr |= MCR_DTR; 2306 if (set & TIOCM_LOOP) 2307 mcr |= MCR_LOOPBACK; 2308 2309 if (clear & TIOCM_RTS) 2310 mcr &= ~MCR_RTS; 2311 if (clear & TIOCM_DTR) 2312 mcr &= ~MCR_DTR; 2313 if (clear & TIOCM_LOOP) 2314 mcr &= ~MCR_LOOPBACK; 2315 2316 edge_port->shadow_mcr = mcr; 2317 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2318 2319 restore_mcr(edge_port, mcr); 2320 return 0; 2321 } 2322 2323 static int edge_tiocmget(struct tty_struct *tty) 2324 { 2325 struct usb_serial_port *port = tty->driver_data; 2326 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2327 unsigned int result = 0; 2328 unsigned int msr; 2329 unsigned int mcr; 2330 unsigned long flags; 2331 2332 spin_lock_irqsave(&edge_port->ep_lock, flags); 2333 2334 msr = edge_port->shadow_msr; 2335 mcr = edge_port->shadow_mcr; 2336 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ 2337 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ 2338 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ 2339 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */ 2340 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ 2341 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ 2342 2343 2344 dev_dbg(&port->dev, "%s -- %x\n", __func__, result); 2345 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2346 2347 return result; 2348 } 2349 2350 static int get_serial_info(struct edgeport_port *edge_port, 2351 struct serial_struct __user *retinfo) 2352 { 2353 struct serial_struct tmp; 2354 unsigned cwait; 2355 2356 if (!retinfo) 2357 return -EFAULT; 2358 2359 cwait = edge_port->port->port.closing_wait; 2360 if (cwait != ASYNC_CLOSING_WAIT_NONE) 2361 cwait = jiffies_to_msecs(cwait) / 10; 2362 2363 memset(&tmp, 0, sizeof(tmp)); 2364 2365 tmp.type = PORT_16550A; 2366 tmp.line = edge_port->port->minor; 2367 tmp.port = edge_port->port->port_number; 2368 tmp.irq = 0; 2369 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; 2370 tmp.xmit_fifo_size = edge_port->port->bulk_out_size; 2371 tmp.baud_base = 9600; 2372 tmp.close_delay = 5*HZ; 2373 tmp.closing_wait = cwait; 2374 2375 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) 2376 return -EFAULT; 2377 return 0; 2378 } 2379 2380 static int edge_ioctl(struct tty_struct *tty, 2381 unsigned int cmd, unsigned long arg) 2382 { 2383 struct usb_serial_port *port = tty->driver_data; 2384 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2385 2386 dev_dbg(&port->dev, "%s - cmd = 0x%x\n", __func__, cmd); 2387 2388 switch (cmd) { 2389 case TIOCGSERIAL: 2390 dev_dbg(&port->dev, "%s - TIOCGSERIAL\n", __func__); 2391 return get_serial_info(edge_port, 2392 (struct serial_struct __user *) arg); 2393 } 2394 return -ENOIOCTLCMD; 2395 } 2396 2397 static void edge_break(struct tty_struct *tty, int break_state) 2398 { 2399 struct usb_serial_port *port = tty->driver_data; 2400 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2401 int status; 2402 int bv = 0; /* Off */ 2403 2404 if (break_state == -1) 2405 bv = 1; /* On */ 2406 status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv); 2407 if (status) 2408 dev_dbg(&port->dev, "%s - error %d sending break set/clear command.\n", 2409 __func__, status); 2410 } 2411 2412 static int edge_startup(struct usb_serial *serial) 2413 { 2414 struct edgeport_serial *edge_serial; 2415 int status; 2416 2417 /* create our private serial structure */ 2418 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL); 2419 if (edge_serial == NULL) { 2420 dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__); 2421 return -ENOMEM; 2422 } 2423 mutex_init(&edge_serial->es_lock); 2424 edge_serial->serial = serial; 2425 usb_set_serial_data(serial, edge_serial); 2426 2427 status = download_fw(edge_serial); 2428 if (status) { 2429 kfree(edge_serial); 2430 return status; 2431 } 2432 2433 return 0; 2434 } 2435 2436 static void edge_disconnect(struct usb_serial *serial) 2437 { 2438 } 2439 2440 static void edge_release(struct usb_serial *serial) 2441 { 2442 kfree(usb_get_serial_data(serial)); 2443 } 2444 2445 static int edge_port_probe(struct usb_serial_port *port) 2446 { 2447 struct edgeport_port *edge_port; 2448 int ret; 2449 2450 edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL); 2451 if (!edge_port) 2452 return -ENOMEM; 2453 2454 ret = kfifo_alloc(&edge_port->write_fifo, EDGE_OUT_BUF_SIZE, 2455 GFP_KERNEL); 2456 if (ret) { 2457 kfree(edge_port); 2458 return -ENOMEM; 2459 } 2460 2461 spin_lock_init(&edge_port->ep_lock); 2462 edge_port->port = port; 2463 edge_port->edge_serial = usb_get_serial_data(port->serial); 2464 edge_port->bUartMode = default_uart_mode; 2465 2466 usb_set_serial_port_data(port, edge_port); 2467 2468 ret = edge_create_sysfs_attrs(port); 2469 if (ret) { 2470 kfifo_free(&edge_port->write_fifo); 2471 kfree(edge_port); 2472 return ret; 2473 } 2474 2475 port->port.closing_wait = msecs_to_jiffies(closing_wait * 10); 2476 2477 return 0; 2478 } 2479 2480 static int edge_port_remove(struct usb_serial_port *port) 2481 { 2482 struct edgeport_port *edge_port; 2483 2484 edge_port = usb_get_serial_port_data(port); 2485 edge_remove_sysfs_attrs(port); 2486 kfifo_free(&edge_port->write_fifo); 2487 kfree(edge_port); 2488 2489 return 0; 2490 } 2491 2492 /* Sysfs Attributes */ 2493 2494 static ssize_t show_uart_mode(struct device *dev, 2495 struct device_attribute *attr, char *buf) 2496 { 2497 struct usb_serial_port *port = to_usb_serial_port(dev); 2498 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2499 2500 return sprintf(buf, "%d\n", edge_port->bUartMode); 2501 } 2502 2503 static ssize_t store_uart_mode(struct device *dev, 2504 struct device_attribute *attr, const char *valbuf, size_t count) 2505 { 2506 struct usb_serial_port *port = to_usb_serial_port(dev); 2507 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2508 unsigned int v = simple_strtoul(valbuf, NULL, 0); 2509 2510 dev_dbg(dev, "%s: setting uart_mode = %d\n", __func__, v); 2511 2512 if (v < 256) 2513 edge_port->bUartMode = v; 2514 else 2515 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v); 2516 2517 return count; 2518 } 2519 2520 static DEVICE_ATTR(uart_mode, S_IWUSR | S_IRUGO, show_uart_mode, 2521 store_uart_mode); 2522 2523 static int edge_create_sysfs_attrs(struct usb_serial_port *port) 2524 { 2525 return device_create_file(&port->dev, &dev_attr_uart_mode); 2526 } 2527 2528 static int edge_remove_sysfs_attrs(struct usb_serial_port *port) 2529 { 2530 device_remove_file(&port->dev, &dev_attr_uart_mode); 2531 return 0; 2532 } 2533 2534 2535 static struct usb_serial_driver edgeport_1port_device = { 2536 .driver = { 2537 .owner = THIS_MODULE, 2538 .name = "edgeport_ti_1", 2539 }, 2540 .description = "Edgeport TI 1 port adapter", 2541 .id_table = edgeport_1port_id_table, 2542 .num_ports = 1, 2543 .open = edge_open, 2544 .close = edge_close, 2545 .throttle = edge_throttle, 2546 .unthrottle = edge_unthrottle, 2547 .attach = edge_startup, 2548 .disconnect = edge_disconnect, 2549 .release = edge_release, 2550 .port_probe = edge_port_probe, 2551 .port_remove = edge_port_remove, 2552 .ioctl = edge_ioctl, 2553 .set_termios = edge_set_termios, 2554 .tiocmget = edge_tiocmget, 2555 .tiocmset = edge_tiocmset, 2556 .tiocmiwait = usb_serial_generic_tiocmiwait, 2557 .get_icount = usb_serial_generic_get_icount, 2558 .write = edge_write, 2559 .write_room = edge_write_room, 2560 .chars_in_buffer = edge_chars_in_buffer, 2561 .tx_empty = edge_tx_empty, 2562 .break_ctl = edge_break, 2563 .read_int_callback = edge_interrupt_callback, 2564 .read_bulk_callback = edge_bulk_in_callback, 2565 .write_bulk_callback = edge_bulk_out_callback, 2566 }; 2567 2568 static struct usb_serial_driver edgeport_2port_device = { 2569 .driver = { 2570 .owner = THIS_MODULE, 2571 .name = "edgeport_ti_2", 2572 }, 2573 .description = "Edgeport TI 2 port adapter", 2574 .id_table = edgeport_2port_id_table, 2575 .num_ports = 2, 2576 .open = edge_open, 2577 .close = edge_close, 2578 .throttle = edge_throttle, 2579 .unthrottle = edge_unthrottle, 2580 .attach = edge_startup, 2581 .disconnect = edge_disconnect, 2582 .release = edge_release, 2583 .port_probe = edge_port_probe, 2584 .port_remove = edge_port_remove, 2585 .ioctl = edge_ioctl, 2586 .set_termios = edge_set_termios, 2587 .tiocmget = edge_tiocmget, 2588 .tiocmset = edge_tiocmset, 2589 .tiocmiwait = usb_serial_generic_tiocmiwait, 2590 .get_icount = usb_serial_generic_get_icount, 2591 .write = edge_write, 2592 .write_room = edge_write_room, 2593 .chars_in_buffer = edge_chars_in_buffer, 2594 .tx_empty = edge_tx_empty, 2595 .break_ctl = edge_break, 2596 .read_int_callback = edge_interrupt_callback, 2597 .read_bulk_callback = edge_bulk_in_callback, 2598 .write_bulk_callback = edge_bulk_out_callback, 2599 }; 2600 2601 static struct usb_serial_driver * const serial_drivers[] = { 2602 &edgeport_1port_device, &edgeport_2port_device, NULL 2603 }; 2604 2605 module_usb_serial_driver(serial_drivers, id_table_combined); 2606 2607 MODULE_AUTHOR(DRIVER_AUTHOR); 2608 MODULE_DESCRIPTION(DRIVER_DESC); 2609 MODULE_LICENSE("GPL"); 2610 MODULE_FIRMWARE("edgeport/down3.bin"); 2611 2612 module_param(closing_wait, int, S_IRUGO | S_IWUSR); 2613 MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs"); 2614 2615 module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR); 2616 MODULE_PARM_DESC(ignore_cpu_rev, 2617 "Ignore the cpu revision when connecting to a device"); 2618 2619 module_param(default_uart_mode, int, S_IRUGO | S_IWUSR); 2620 MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ..."); 2621