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 struct async_icount icount; 90 wait_queue_head_t delta_msr_wait; /* for handling sleeping while 91 waiting for msr change to 92 happen */ 93 struct edgeport_serial *edge_serial; 94 struct usb_serial_port *port; 95 __u8 bUartMode; /* Port type, 0: RS232, etc. */ 96 spinlock_t ep_lock; 97 int ep_read_urb_state; 98 int ep_write_urb_in_use; 99 struct kfifo write_fifo; 100 }; 101 102 struct edgeport_serial { 103 struct product_info product_info; 104 u8 TI_I2C_Type; /* Type of I2C in UMP */ 105 u8 TiReadI2C; /* Set to TRUE if we have read the 106 I2c in Boot Mode */ 107 struct mutex es_lock; 108 int num_ports_open; 109 struct usb_serial *serial; 110 }; 111 112 113 /* Devices that this driver supports */ 114 static const struct usb_device_id edgeport_1port_id_table[] = { 115 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) }, 116 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) }, 117 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) }, 118 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) }, 119 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) }, 120 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) }, 121 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) }, 122 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) }, 123 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) }, 124 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) }, 125 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) }, 126 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) }, 127 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) }, 128 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) }, 129 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) }, 130 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) }, 131 { } 132 }; 133 134 static const struct usb_device_id edgeport_2port_id_table[] = { 135 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) }, 136 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) }, 137 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) }, 138 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) }, 139 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) }, 140 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) }, 141 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) }, 142 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) }, 143 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) }, 144 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) }, 145 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) }, 146 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) }, 147 /* The 4, 8 and 16 port devices show up as multiple 2 port devices */ 148 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) }, 149 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) }, 150 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) }, 151 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) }, 152 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) }, 153 { } 154 }; 155 156 /* Devices that this driver supports */ 157 static const struct usb_device_id id_table_combined[] = { 158 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) }, 159 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) }, 160 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) }, 161 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) }, 162 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) }, 163 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) }, 164 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) }, 165 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) }, 166 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) }, 167 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) }, 168 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) }, 169 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) }, 170 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) }, 171 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) }, 172 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) }, 173 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) }, 174 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) }, 175 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) }, 176 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) }, 177 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) }, 178 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) }, 179 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) }, 180 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) }, 181 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) }, 182 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) }, 183 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) }, 184 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) }, 185 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) }, 186 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) }, 187 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) }, 188 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) }, 189 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) }, 190 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) }, 191 { } 192 }; 193 194 MODULE_DEVICE_TABLE(usb, id_table_combined); 195 196 static unsigned char OperationalMajorVersion; 197 static unsigned char OperationalMinorVersion; 198 static unsigned short OperationalBuildNumber; 199 200 static int closing_wait = EDGE_CLOSING_WAIT; 201 static bool ignore_cpu_rev; 202 static int default_uart_mode; /* RS232 */ 203 204 static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, 205 int length); 206 207 static void stop_read(struct edgeport_port *edge_port); 208 static int restart_read(struct edgeport_port *edge_port); 209 210 static void edge_set_termios(struct tty_struct *tty, 211 struct usb_serial_port *port, struct ktermios *old_termios); 212 static void edge_send(struct tty_struct *tty); 213 214 /* sysfs attributes */ 215 static int edge_create_sysfs_attrs(struct usb_serial_port *port); 216 static int edge_remove_sysfs_attrs(struct usb_serial_port *port); 217 218 219 static int ti_vread_sync(struct usb_device *dev, __u8 request, 220 __u16 value, __u16 index, u8 *data, int size) 221 { 222 int status; 223 224 status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request, 225 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN), 226 value, index, data, size, 1000); 227 if (status < 0) 228 return status; 229 if (status != size) { 230 dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n", 231 __func__, size, status); 232 return -ECOMM; 233 } 234 return 0; 235 } 236 237 static int ti_vsend_sync(struct usb_device *dev, __u8 request, 238 __u16 value, __u16 index, u8 *data, int size) 239 { 240 int status; 241 242 status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request, 243 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT), 244 value, index, data, size, 1000); 245 if (status < 0) 246 return status; 247 if (status != size) { 248 dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n", 249 __func__, size, status); 250 return -ECOMM; 251 } 252 return 0; 253 } 254 255 static int send_cmd(struct usb_device *dev, __u8 command, 256 __u8 moduleid, __u16 value, u8 *data, 257 int size) 258 { 259 return ti_vsend_sync(dev, command, value, moduleid, data, size); 260 } 261 262 /* clear tx/rx buffers and fifo in TI UMP */ 263 static int purge_port(struct usb_serial_port *port, __u16 mask) 264 { 265 int port_number = port->number - port->serial->minor; 266 267 dev_dbg(&port->dev, "%s - port %d, mask %x\n", __func__, port_number, mask); 268 269 return send_cmd(port->serial->dev, 270 UMPC_PURGE_PORT, 271 (__u8)(UMPM_UART1_PORT + port_number), 272 mask, 273 NULL, 274 0); 275 } 276 277 /** 278 * read_download_mem - Read edgeport memory from TI chip 279 * @dev: usb device pointer 280 * @start_address: Device CPU address at which to read 281 * @length: Length of above data 282 * @address_type: Can read both XDATA and I2C 283 * @buffer: pointer to input data buffer 284 */ 285 static int read_download_mem(struct usb_device *dev, int start_address, 286 int length, __u8 address_type, __u8 *buffer) 287 { 288 int status = 0; 289 __u8 read_length; 290 __be16 be_start_address; 291 292 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, length); 293 294 /* Read in blocks of 64 bytes 295 * (TI firmware can't handle more than 64 byte reads) 296 */ 297 while (length) { 298 if (length > 64) 299 read_length = 64; 300 else 301 read_length = (__u8)length; 302 303 if (read_length > 1) { 304 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, read_length); 305 } 306 be_start_address = cpu_to_be16(start_address); 307 status = ti_vread_sync(dev, UMPC_MEMORY_READ, 308 (__u16)address_type, 309 (__force __u16)be_start_address, 310 buffer, read_length); 311 312 if (status) { 313 dev_dbg(&dev->dev, "%s - ERROR %x\n", __func__, status); 314 return status; 315 } 316 317 if (read_length > 1) 318 usb_serial_debug_data(&dev->dev, __func__, read_length, buffer); 319 320 /* Update pointers/length */ 321 start_address += read_length; 322 buffer += read_length; 323 length -= read_length; 324 } 325 326 return status; 327 } 328 329 static int read_ram(struct usb_device *dev, int start_address, 330 int length, __u8 *buffer) 331 { 332 return read_download_mem(dev, start_address, length, 333 DTK_ADDR_SPACE_XDATA, buffer); 334 } 335 336 /* Read edgeport memory to a given block */ 337 static int read_boot_mem(struct edgeport_serial *serial, 338 int start_address, int length, __u8 *buffer) 339 { 340 int status = 0; 341 int i; 342 343 for (i = 0; i < length; i++) { 344 status = ti_vread_sync(serial->serial->dev, 345 UMPC_MEMORY_READ, serial->TI_I2C_Type, 346 (__u16)(start_address+i), &buffer[i], 0x01); 347 if (status) { 348 dev_dbg(&serial->serial->dev->dev, "%s - ERROR %x\n", __func__, status); 349 return status; 350 } 351 } 352 353 dev_dbg(&serial->serial->dev->dev, "%s - start_address = %x, length = %d\n", 354 __func__, start_address, length); 355 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer); 356 357 serial->TiReadI2C = 1; 358 359 return status; 360 } 361 362 /* Write given block to TI EPROM memory */ 363 static int write_boot_mem(struct edgeport_serial *serial, 364 int start_address, int length, __u8 *buffer) 365 { 366 int status = 0; 367 int i; 368 u8 *temp; 369 370 /* Must do a read before write */ 371 if (!serial->TiReadI2C) { 372 temp = kmalloc(1, GFP_KERNEL); 373 if (!temp) { 374 dev_err(&serial->serial->dev->dev, 375 "%s - out of memory\n", __func__); 376 return -ENOMEM; 377 } 378 status = read_boot_mem(serial, 0, 1, temp); 379 kfree(temp); 380 if (status) 381 return status; 382 } 383 384 for (i = 0; i < length; ++i) { 385 status = ti_vsend_sync(serial->serial->dev, 386 UMPC_MEMORY_WRITE, buffer[i], 387 (__u16)(i + start_address), NULL, 0); 388 if (status) 389 return status; 390 } 391 392 dev_dbg(&serial->serial->dev->dev, "%s - start_sddr = %x, length = %d\n", __func__, start_address, length); 393 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer); 394 395 return status; 396 } 397 398 399 /* Write edgeport I2C memory to TI chip */ 400 static int write_i2c_mem(struct edgeport_serial *serial, 401 int start_address, int length, __u8 address_type, __u8 *buffer) 402 { 403 struct device *dev = &serial->serial->dev->dev; 404 int status = 0; 405 int write_length; 406 __be16 be_start_address; 407 408 /* We can only send a maximum of 1 aligned byte page at a time */ 409 410 /* calculate the number of bytes left in the first page */ 411 write_length = EPROM_PAGE_SIZE - 412 (start_address & (EPROM_PAGE_SIZE - 1)); 413 414 if (write_length > length) 415 write_length = length; 416 417 dev_dbg(dev, "%s - BytesInFirstPage Addr = %x, length = %d\n", 418 __func__, start_address, write_length); 419 usb_serial_debug_data(dev, __func__, write_length, buffer); 420 421 /* Write first page */ 422 be_start_address = cpu_to_be16(start_address); 423 status = ti_vsend_sync(serial->serial->dev, 424 UMPC_MEMORY_WRITE, (__u16)address_type, 425 (__force __u16)be_start_address, 426 buffer, write_length); 427 if (status) { 428 dev_dbg(dev, "%s - ERROR %d\n", __func__, status); 429 return status; 430 } 431 432 length -= write_length; 433 start_address += write_length; 434 buffer += write_length; 435 436 /* We should be aligned now -- can write 437 max page size bytes at a time */ 438 while (length) { 439 if (length > EPROM_PAGE_SIZE) 440 write_length = EPROM_PAGE_SIZE; 441 else 442 write_length = length; 443 444 dev_dbg(dev, "%s - Page Write Addr = %x, length = %d\n", 445 __func__, start_address, write_length); 446 usb_serial_debug_data(dev, __func__, write_length, buffer); 447 448 /* Write next page */ 449 be_start_address = cpu_to_be16(start_address); 450 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE, 451 (__u16)address_type, 452 (__force __u16)be_start_address, 453 buffer, write_length); 454 if (status) { 455 dev_err(dev, "%s - ERROR %d\n", __func__, status); 456 return status; 457 } 458 459 length -= write_length; 460 start_address += write_length; 461 buffer += write_length; 462 } 463 return status; 464 } 465 466 /* Examine the UMP DMA registers and LSR 467 * 468 * Check the MSBit of the X and Y DMA byte count registers. 469 * A zero in this bit indicates that the TX DMA buffers are empty 470 * then check the TX Empty bit in the UART. 471 */ 472 static int tx_active(struct edgeport_port *port) 473 { 474 int status; 475 struct out_endpoint_desc_block *oedb; 476 __u8 *lsr; 477 int bytes_left = 0; 478 479 oedb = kmalloc(sizeof(*oedb), GFP_KERNEL); 480 if (!oedb) { 481 dev_err(&port->port->dev, "%s - out of memory\n", __func__); 482 return -ENOMEM; 483 } 484 485 lsr = kmalloc(1, GFP_KERNEL); /* Sigh, that's right, just one byte, 486 as not all platforms can do DMA 487 from stack */ 488 if (!lsr) { 489 kfree(oedb); 490 return -ENOMEM; 491 } 492 /* Read the DMA Count Registers */ 493 status = read_ram(port->port->serial->dev, port->dma_address, 494 sizeof(*oedb), (void *)oedb); 495 if (status) 496 goto exit_is_tx_active; 497 498 dev_dbg(&port->port->dev, "%s - XByteCount 0x%X\n", __func__, oedb->XByteCount); 499 500 /* and the LSR */ 501 status = read_ram(port->port->serial->dev, 502 port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr); 503 504 if (status) 505 goto exit_is_tx_active; 506 dev_dbg(&port->port->dev, "%s - LSR = 0x%X\n", __func__, *lsr); 507 508 /* If either buffer has data or we are transmitting then return TRUE */ 509 if ((oedb->XByteCount & 0x80) != 0) 510 bytes_left += 64; 511 512 if ((*lsr & UMP_UART_LSR_TX_MASK) == 0) 513 bytes_left += 1; 514 515 /* We return Not Active if we get any kind of error */ 516 exit_is_tx_active: 517 dev_dbg(&port->port->dev, "%s - return %d\n", __func__, bytes_left); 518 519 kfree(lsr); 520 kfree(oedb); 521 return bytes_left; 522 } 523 524 static int choose_config(struct usb_device *dev) 525 { 526 /* 527 * There may be multiple configurations on this device, in which case 528 * we would need to read and parse all of them to find out which one 529 * we want. However, we just support one config at this point, 530 * configuration # 1, which is Config Descriptor 0. 531 */ 532 533 dev_dbg(&dev->dev, "%s - Number of Interfaces = %d\n", 534 __func__, dev->config->desc.bNumInterfaces); 535 dev_dbg(&dev->dev, "%s - MAX Power = %d\n", 536 __func__, dev->config->desc.bMaxPower * 2); 537 538 if (dev->config->desc.bNumInterfaces != 1) { 539 dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", __func__); 540 return -ENODEV; 541 } 542 543 return 0; 544 } 545 546 static int read_rom(struct edgeport_serial *serial, 547 int start_address, int length, __u8 *buffer) 548 { 549 int status; 550 551 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { 552 status = read_download_mem(serial->serial->dev, 553 start_address, 554 length, 555 serial->TI_I2C_Type, 556 buffer); 557 } else { 558 status = read_boot_mem(serial, start_address, length, 559 buffer); 560 } 561 return status; 562 } 563 564 static int write_rom(struct edgeport_serial *serial, int start_address, 565 int length, __u8 *buffer) 566 { 567 if (serial->product_info.TiMode == TI_MODE_BOOT) 568 return write_boot_mem(serial, start_address, length, 569 buffer); 570 571 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) 572 return write_i2c_mem(serial, start_address, length, 573 serial->TI_I2C_Type, buffer); 574 return -EINVAL; 575 } 576 577 578 579 /* Read a descriptor header from I2C based on type */ 580 static int get_descriptor_addr(struct edgeport_serial *serial, 581 int desc_type, struct ti_i2c_desc *rom_desc) 582 { 583 int start_address; 584 int status; 585 586 /* Search for requested descriptor in I2C */ 587 start_address = 2; 588 do { 589 status = read_rom(serial, 590 start_address, 591 sizeof(struct ti_i2c_desc), 592 (__u8 *)rom_desc); 593 if (status) 594 return 0; 595 596 if (rom_desc->Type == desc_type) 597 return start_address; 598 599 start_address = start_address + sizeof(struct ti_i2c_desc) 600 + rom_desc->Size; 601 602 } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type); 603 604 return 0; 605 } 606 607 /* Validate descriptor checksum */ 608 static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer) 609 { 610 __u16 i; 611 __u8 cs = 0; 612 613 for (i = 0; i < rom_desc->Size; i++) 614 cs = (__u8)(cs + buffer[i]); 615 616 if (cs != rom_desc->CheckSum) { 617 pr_debug("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs); 618 return -EINVAL; 619 } 620 return 0; 621 } 622 623 /* Make sure that the I2C image is good */ 624 static int check_i2c_image(struct edgeport_serial *serial) 625 { 626 struct device *dev = &serial->serial->dev->dev; 627 int status = 0; 628 struct ti_i2c_desc *rom_desc; 629 int start_address = 2; 630 __u8 *buffer; 631 __u16 ttype; 632 633 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 634 if (!rom_desc) { 635 dev_err(dev, "%s - out of memory\n", __func__); 636 return -ENOMEM; 637 } 638 buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL); 639 if (!buffer) { 640 dev_err(dev, "%s - out of memory when allocating buffer\n", 641 __func__); 642 kfree(rom_desc); 643 return -ENOMEM; 644 } 645 646 /* Read the first byte (Signature0) must be 0x52 or 0x10 */ 647 status = read_rom(serial, 0, 1, buffer); 648 if (status) 649 goto out; 650 651 if (*buffer != UMP5152 && *buffer != UMP3410) { 652 dev_err(dev, "%s - invalid buffer signature\n", __func__); 653 status = -ENODEV; 654 goto out; 655 } 656 657 do { 658 /* Validate the I2C */ 659 status = read_rom(serial, 660 start_address, 661 sizeof(struct ti_i2c_desc), 662 (__u8 *)rom_desc); 663 if (status) 664 break; 665 666 if ((start_address + sizeof(struct ti_i2c_desc) + 667 rom_desc->Size) > TI_MAX_I2C_SIZE) { 668 status = -ENODEV; 669 dev_dbg(dev, "%s - structure too big, erroring out.\n", __func__); 670 break; 671 } 672 673 dev_dbg(dev, "%s Type = 0x%x\n", __func__, rom_desc->Type); 674 675 /* Skip type 2 record */ 676 ttype = rom_desc->Type & 0x0f; 677 if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC 678 && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) { 679 /* Read the descriptor data */ 680 status = read_rom(serial, start_address + 681 sizeof(struct ti_i2c_desc), 682 rom_desc->Size, buffer); 683 if (status) 684 break; 685 686 status = valid_csum(rom_desc, buffer); 687 if (status) 688 break; 689 } 690 start_address = start_address + sizeof(struct ti_i2c_desc) + 691 rom_desc->Size; 692 693 } while ((rom_desc->Type != I2C_DESC_TYPE_ION) && 694 (start_address < TI_MAX_I2C_SIZE)); 695 696 if ((rom_desc->Type != I2C_DESC_TYPE_ION) || 697 (start_address > TI_MAX_I2C_SIZE)) 698 status = -ENODEV; 699 700 out: 701 kfree(buffer); 702 kfree(rom_desc); 703 return status; 704 } 705 706 static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer) 707 { 708 int status; 709 int start_address; 710 struct ti_i2c_desc *rom_desc; 711 struct edge_ti_manuf_descriptor *desc; 712 struct device *dev = &serial->serial->dev->dev; 713 714 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 715 if (!rom_desc) { 716 dev_err(dev, "%s - out of memory\n", __func__); 717 return -ENOMEM; 718 } 719 start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION, 720 rom_desc); 721 722 if (!start_address) { 723 dev_dbg(dev, "%s - Edge Descriptor not found in I2C\n", __func__); 724 status = -ENODEV; 725 goto exit; 726 } 727 728 /* Read the descriptor data */ 729 status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc), 730 rom_desc->Size, buffer); 731 if (status) 732 goto exit; 733 734 status = valid_csum(rom_desc, buffer); 735 736 desc = (struct edge_ti_manuf_descriptor *)buffer; 737 dev_dbg(dev, "%s - IonConfig 0x%x\n", __func__, desc->IonConfig); 738 dev_dbg(dev, "%s - Version %d\n", __func__, desc->Version); 739 dev_dbg(dev, "%s - Cpu/Board 0x%x\n", __func__, desc->CpuRev_BoardRev); 740 dev_dbg(dev, "%s - NumPorts %d\n", __func__, desc->NumPorts); 741 dev_dbg(dev, "%s - NumVirtualPorts %d\n", __func__, desc->NumVirtualPorts); 742 dev_dbg(dev, "%s - TotalPorts %d\n", __func__, desc->TotalPorts); 743 744 exit: 745 kfree(rom_desc); 746 return status; 747 } 748 749 /* Build firmware header used for firmware update */ 750 static int build_i2c_fw_hdr(__u8 *header, struct device *dev) 751 { 752 __u8 *buffer; 753 int buffer_size; 754 int i; 755 int err; 756 __u8 cs = 0; 757 struct ti_i2c_desc *i2c_header; 758 struct ti_i2c_image_header *img_header; 759 struct ti_i2c_firmware_rec *firmware_rec; 760 const struct firmware *fw; 761 const char *fw_name = "edgeport/down3.bin"; 762 763 /* In order to update the I2C firmware we must change the type 2 record 764 * to type 0xF2. This will force the UMP to come up in Boot Mode. 765 * Then while in boot mode, the driver will download the latest 766 * firmware (padded to 15.5k) into the UMP ram. And finally when the 767 * device comes back up in download mode the driver will cause the new 768 * firmware to be copied from the UMP Ram to I2C and the firmware will 769 * update the record type from 0xf2 to 0x02. 770 */ 771 772 /* Allocate a 15.5k buffer + 2 bytes for version number 773 * (Firmware Record) */ 774 buffer_size = (((1024 * 16) - 512 ) + 775 sizeof(struct ti_i2c_firmware_rec)); 776 777 buffer = kmalloc(buffer_size, GFP_KERNEL); 778 if (!buffer) { 779 dev_err(dev, "%s - out of memory\n", __func__); 780 return -ENOMEM; 781 } 782 783 // Set entire image of 0xffs 784 memset(buffer, 0xff, buffer_size); 785 786 err = request_firmware(&fw, fw_name, dev); 787 if (err) { 788 dev_err(dev, "Failed to load image \"%s\" err %d\n", 789 fw_name, err); 790 kfree(buffer); 791 return err; 792 } 793 794 /* Save Download Version Number */ 795 OperationalMajorVersion = fw->data[0]; 796 OperationalMinorVersion = fw->data[1]; 797 OperationalBuildNumber = fw->data[2] | (fw->data[3] << 8); 798 799 /* Copy version number into firmware record */ 800 firmware_rec = (struct ti_i2c_firmware_rec *)buffer; 801 802 firmware_rec->Ver_Major = OperationalMajorVersion; 803 firmware_rec->Ver_Minor = OperationalMinorVersion; 804 805 /* Pointer to fw_down memory image */ 806 img_header = (struct ti_i2c_image_header *)&fw->data[4]; 807 808 memcpy(buffer + sizeof(struct ti_i2c_firmware_rec), 809 &fw->data[4 + sizeof(struct ti_i2c_image_header)], 810 le16_to_cpu(img_header->Length)); 811 812 release_firmware(fw); 813 814 for (i=0; i < buffer_size; i++) { 815 cs = (__u8)(cs + buffer[i]); 816 } 817 818 kfree(buffer); 819 820 /* Build new header */ 821 i2c_header = (struct ti_i2c_desc *)header; 822 firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data; 823 824 i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK; 825 i2c_header->Size = (__u16)buffer_size; 826 i2c_header->CheckSum = cs; 827 firmware_rec->Ver_Major = OperationalMajorVersion; 828 firmware_rec->Ver_Minor = OperationalMinorVersion; 829 830 return 0; 831 } 832 833 /* Try to figure out what type of I2c we have */ 834 static int i2c_type_bootmode(struct edgeport_serial *serial) 835 { 836 struct device *dev = &serial->serial->dev->dev; 837 int status; 838 u8 *data; 839 840 data = kmalloc(1, GFP_KERNEL); 841 if (!data) { 842 dev_err(dev, "%s - out of memory\n", __func__); 843 return -ENOMEM; 844 } 845 846 /* Try to read type 2 */ 847 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, 848 DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01); 849 if (status) 850 dev_dbg(dev, "%s - read 2 status error = %d\n", __func__, status); 851 else 852 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data); 853 if ((!status) && (*data == UMP5152 || *data == UMP3410)) { 854 dev_dbg(dev, "%s - ROM_TYPE_II\n", __func__); 855 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 856 goto out; 857 } 858 859 /* Try to read type 3 */ 860 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, 861 DTK_ADDR_SPACE_I2C_TYPE_III, 0, data, 0x01); 862 if (status) 863 dev_dbg(dev, "%s - read 3 status error = %d\n", __func__, status); 864 else 865 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data); 866 if ((!status) && (*data == UMP5152 || *data == UMP3410)) { 867 dev_dbg(dev, "%s - ROM_TYPE_III\n", __func__); 868 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III; 869 goto out; 870 } 871 872 dev_dbg(dev, "%s - Unknown\n", __func__); 873 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 874 status = -ENODEV; 875 out: 876 kfree(data); 877 return status; 878 } 879 880 static int bulk_xfer(struct usb_serial *serial, void *buffer, 881 int length, int *num_sent) 882 { 883 int status; 884 885 status = usb_bulk_msg(serial->dev, 886 usb_sndbulkpipe(serial->dev, 887 serial->port[0]->bulk_out_endpointAddress), 888 buffer, length, num_sent, 1000); 889 return status; 890 } 891 892 /* Download given firmware image to the device (IN BOOT MODE) */ 893 static int download_code(struct edgeport_serial *serial, __u8 *image, 894 int image_length) 895 { 896 int status = 0; 897 int pos; 898 int transfer; 899 int done; 900 901 /* Transfer firmware image */ 902 for (pos = 0; pos < image_length; ) { 903 /* Read the next buffer from file */ 904 transfer = image_length - pos; 905 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE) 906 transfer = EDGE_FW_BULK_MAX_PACKET_SIZE; 907 908 /* Transfer data */ 909 status = bulk_xfer(serial->serial, &image[pos], 910 transfer, &done); 911 if (status) 912 break; 913 /* Advance buffer pointer */ 914 pos += done; 915 } 916 917 return status; 918 } 919 920 /* FIXME!!! */ 921 static int config_boot_dev(struct usb_device *dev) 922 { 923 return 0; 924 } 925 926 static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc) 927 { 928 return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev); 929 } 930 931 /** 932 * DownloadTIFirmware - Download run-time operating firmware to the TI5052 933 * 934 * This routine downloads the main operating code into the TI5052, using the 935 * boot code already burned into E2PROM or ROM. 936 */ 937 static int download_fw(struct edgeport_serial *serial) 938 { 939 struct device *dev = &serial->serial->dev->dev; 940 int status = 0; 941 int start_address; 942 struct edge_ti_manuf_descriptor *ti_manuf_desc; 943 struct usb_interface_descriptor *interface; 944 int download_cur_ver; 945 int download_new_ver; 946 947 /* This routine is entered by both the BOOT mode and the Download mode 948 * We can determine which code is running by the reading the config 949 * descriptor and if we have only one bulk pipe it is in boot mode 950 */ 951 serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP; 952 953 /* Default to type 2 i2c */ 954 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 955 956 status = choose_config(serial->serial->dev); 957 if (status) 958 return status; 959 960 interface = &serial->serial->interface->cur_altsetting->desc; 961 if (!interface) { 962 dev_err(dev, "%s - no interface set, error!\n", __func__); 963 return -ENODEV; 964 } 965 966 /* 967 * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING 968 * if we have more than one endpoint we are definitely in download 969 * mode 970 */ 971 if (interface->bNumEndpoints > 1) 972 serial->product_info.TiMode = TI_MODE_DOWNLOAD; 973 else 974 /* Otherwise we will remain in configuring mode */ 975 serial->product_info.TiMode = TI_MODE_CONFIGURING; 976 977 /********************************************************************/ 978 /* Download Mode */ 979 /********************************************************************/ 980 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { 981 struct ti_i2c_desc *rom_desc; 982 983 dev_dbg(dev, "%s - RUNNING IN DOWNLOAD MODE\n", __func__); 984 985 status = check_i2c_image(serial); 986 if (status) { 987 dev_dbg(dev, "%s - DOWNLOAD MODE -- BAD I2C\n", __func__); 988 return status; 989 } 990 991 /* Validate Hardware version number 992 * Read Manufacturing Descriptor from TI Based Edgeport 993 */ 994 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL); 995 if (!ti_manuf_desc) { 996 dev_err(dev, "%s - out of memory.\n", __func__); 997 return -ENOMEM; 998 } 999 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc); 1000 if (status) { 1001 kfree(ti_manuf_desc); 1002 return status; 1003 } 1004 1005 /* Check version number of ION descriptor */ 1006 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { 1007 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n", 1008 __func__, ti_cpu_rev(ti_manuf_desc)); 1009 kfree(ti_manuf_desc); 1010 return -EINVAL; 1011 } 1012 1013 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 1014 if (!rom_desc) { 1015 dev_err(dev, "%s - out of memory.\n", __func__); 1016 kfree(ti_manuf_desc); 1017 return -ENOMEM; 1018 } 1019 1020 /* Search for type 2 record (firmware record) */ 1021 start_address = get_descriptor_addr(serial, 1022 I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc); 1023 if (start_address != 0) { 1024 struct ti_i2c_firmware_rec *firmware_version; 1025 u8 *record; 1026 1027 dev_dbg(dev, "%s - Found Type FIRMWARE (Type 2) record\n", __func__); 1028 1029 firmware_version = kmalloc(sizeof(*firmware_version), 1030 GFP_KERNEL); 1031 if (!firmware_version) { 1032 dev_err(dev, "%s - out of memory.\n", __func__); 1033 kfree(rom_desc); 1034 kfree(ti_manuf_desc); 1035 return -ENOMEM; 1036 } 1037 1038 /* Validate version number 1039 * Read the descriptor data 1040 */ 1041 status = read_rom(serial, start_address + 1042 sizeof(struct ti_i2c_desc), 1043 sizeof(struct ti_i2c_firmware_rec), 1044 (__u8 *)firmware_version); 1045 if (status) { 1046 kfree(firmware_version); 1047 kfree(rom_desc); 1048 kfree(ti_manuf_desc); 1049 return status; 1050 } 1051 1052 /* Check version number of download with current 1053 version in I2c */ 1054 download_cur_ver = (firmware_version->Ver_Major << 8) + 1055 (firmware_version->Ver_Minor); 1056 download_new_ver = (OperationalMajorVersion << 8) + 1057 (OperationalMinorVersion); 1058 1059 dev_dbg(dev, "%s - >> FW Versions Device %d.%d Driver %d.%d\n", 1060 __func__, firmware_version->Ver_Major, 1061 firmware_version->Ver_Minor, 1062 OperationalMajorVersion, 1063 OperationalMinorVersion); 1064 1065 /* Check if we have an old version in the I2C and 1066 update if necessary */ 1067 if (download_cur_ver < download_new_ver) { 1068 dev_dbg(dev, "%s - Update I2C dld from %d.%d to %d.%d\n", 1069 __func__, 1070 firmware_version->Ver_Major, 1071 firmware_version->Ver_Minor, 1072 OperationalMajorVersion, 1073 OperationalMinorVersion); 1074 1075 record = kmalloc(1, GFP_KERNEL); 1076 if (!record) { 1077 dev_err(dev, "%s - out of memory.\n", 1078 __func__); 1079 kfree(firmware_version); 1080 kfree(rom_desc); 1081 kfree(ti_manuf_desc); 1082 return -ENOMEM; 1083 } 1084 /* In order to update the I2C firmware we must 1085 * change the type 2 record to type 0xF2. This 1086 * will force the UMP to come up in Boot Mode. 1087 * Then while in boot mode, the driver will 1088 * download the latest firmware (padded to 1089 * 15.5k) into the UMP ram. Finally when the 1090 * device comes back up in download mode the 1091 * driver will cause the new firmware to be 1092 * copied from the UMP Ram to I2C and the 1093 * firmware will update the record type from 1094 * 0xf2 to 0x02. 1095 */ 1096 *record = I2C_DESC_TYPE_FIRMWARE_BLANK; 1097 1098 /* Change the I2C Firmware record type to 1099 0xf2 to trigger an update */ 1100 status = write_rom(serial, start_address, 1101 sizeof(*record), record); 1102 if (status) { 1103 kfree(record); 1104 kfree(firmware_version); 1105 kfree(rom_desc); 1106 kfree(ti_manuf_desc); 1107 return status; 1108 } 1109 1110 /* verify the write -- must do this in order 1111 * for write to complete before we do the 1112 * hardware reset 1113 */ 1114 status = read_rom(serial, 1115 start_address, 1116 sizeof(*record), 1117 record); 1118 if (status) { 1119 kfree(record); 1120 kfree(firmware_version); 1121 kfree(rom_desc); 1122 kfree(ti_manuf_desc); 1123 return status; 1124 } 1125 1126 if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) { 1127 dev_err(dev, "%s - error resetting device\n", __func__); 1128 kfree(record); 1129 kfree(firmware_version); 1130 kfree(rom_desc); 1131 kfree(ti_manuf_desc); 1132 return -ENODEV; 1133 } 1134 1135 dev_dbg(dev, "%s - HARDWARE RESET\n", __func__); 1136 1137 /* Reset UMP -- Back to BOOT MODE */ 1138 status = ti_vsend_sync(serial->serial->dev, 1139 UMPC_HARDWARE_RESET, 1140 0, 0, NULL, 0); 1141 1142 dev_dbg(dev, "%s - HARDWARE RESET return %d\n", __func__, status); 1143 1144 /* return an error on purpose. */ 1145 kfree(record); 1146 kfree(firmware_version); 1147 kfree(rom_desc); 1148 kfree(ti_manuf_desc); 1149 return -ENODEV; 1150 } 1151 kfree(firmware_version); 1152 } 1153 /* Search for type 0xF2 record (firmware blank record) */ 1154 else if ((start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) { 1155 #define HEADER_SIZE (sizeof(struct ti_i2c_desc) + \ 1156 sizeof(struct ti_i2c_firmware_rec)) 1157 __u8 *header; 1158 __u8 *vheader; 1159 1160 header = kmalloc(HEADER_SIZE, GFP_KERNEL); 1161 if (!header) { 1162 dev_err(dev, "%s - out of memory.\n", __func__); 1163 kfree(rom_desc); 1164 kfree(ti_manuf_desc); 1165 return -ENOMEM; 1166 } 1167 1168 vheader = kmalloc(HEADER_SIZE, GFP_KERNEL); 1169 if (!vheader) { 1170 dev_err(dev, "%s - out of memory.\n", __func__); 1171 kfree(header); 1172 kfree(rom_desc); 1173 kfree(ti_manuf_desc); 1174 return -ENOMEM; 1175 } 1176 1177 dev_dbg(dev, "%s - Found Type BLANK FIRMWARE (Type F2) record\n", __func__); 1178 1179 /* 1180 * In order to update the I2C firmware we must change 1181 * the type 2 record to type 0xF2. This will force the 1182 * UMP to come up in Boot Mode. Then while in boot 1183 * mode, the driver will download the latest firmware 1184 * (padded to 15.5k) into the UMP ram. Finally when the 1185 * device comes back up in download mode the driver 1186 * will cause the new firmware to be copied from the 1187 * UMP Ram to I2C and the firmware will update the 1188 * record type from 0xf2 to 0x02. 1189 */ 1190 status = build_i2c_fw_hdr(header, dev); 1191 if (status) { 1192 kfree(vheader); 1193 kfree(header); 1194 kfree(rom_desc); 1195 kfree(ti_manuf_desc); 1196 return -EINVAL; 1197 } 1198 1199 /* Update I2C with type 0xf2 record with correct 1200 size and checksum */ 1201 status = write_rom(serial, 1202 start_address, 1203 HEADER_SIZE, 1204 header); 1205 if (status) { 1206 kfree(vheader); 1207 kfree(header); 1208 kfree(rom_desc); 1209 kfree(ti_manuf_desc); 1210 return -EINVAL; 1211 } 1212 1213 /* verify the write -- must do this in order for 1214 write to complete before we do the hardware reset */ 1215 status = read_rom(serial, start_address, 1216 HEADER_SIZE, vheader); 1217 1218 if (status) { 1219 dev_dbg(dev, "%s - can't read header back\n", __func__); 1220 kfree(vheader); 1221 kfree(header); 1222 kfree(rom_desc); 1223 kfree(ti_manuf_desc); 1224 return status; 1225 } 1226 if (memcmp(vheader, header, HEADER_SIZE)) { 1227 dev_dbg(dev, "%s - write download record failed\n", __func__); 1228 kfree(vheader); 1229 kfree(header); 1230 kfree(rom_desc); 1231 kfree(ti_manuf_desc); 1232 return -EINVAL; 1233 } 1234 1235 kfree(vheader); 1236 kfree(header); 1237 1238 dev_dbg(dev, "%s - Start firmware update\n", __func__); 1239 1240 /* Tell firmware to copy download image into I2C */ 1241 status = ti_vsend_sync(serial->serial->dev, 1242 UMPC_COPY_DNLD_TO_I2C, 0, 0, NULL, 0); 1243 1244 dev_dbg(dev, "%s - Update complete 0x%x\n", __func__, status); 1245 if (status) { 1246 dev_err(dev, 1247 "%s - UMPC_COPY_DNLD_TO_I2C failed\n", 1248 __func__); 1249 kfree(rom_desc); 1250 kfree(ti_manuf_desc); 1251 return status; 1252 } 1253 } 1254 1255 // The device is running the download code 1256 kfree(rom_desc); 1257 kfree(ti_manuf_desc); 1258 return 0; 1259 } 1260 1261 /********************************************************************/ 1262 /* Boot Mode */ 1263 /********************************************************************/ 1264 dev_dbg(dev, "%s - RUNNING IN BOOT MODE\n", __func__); 1265 1266 /* Configure the TI device so we can use the BULK pipes for download */ 1267 status = config_boot_dev(serial->serial->dev); 1268 if (status) 1269 return status; 1270 1271 if (le16_to_cpu(serial->serial->dev->descriptor.idVendor) 1272 != USB_VENDOR_ID_ION) { 1273 dev_dbg(dev, "%s - VID = 0x%x\n", __func__, 1274 le16_to_cpu(serial->serial->dev->descriptor.idVendor)); 1275 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 1276 goto stayinbootmode; 1277 } 1278 1279 /* We have an ION device (I2c Must be programmed) 1280 Determine I2C image type */ 1281 if (i2c_type_bootmode(serial)) 1282 goto stayinbootmode; 1283 1284 /* Check for ION Vendor ID and that the I2C is valid */ 1285 if (!check_i2c_image(serial)) { 1286 struct ti_i2c_image_header *header; 1287 int i; 1288 __u8 cs = 0; 1289 __u8 *buffer; 1290 int buffer_size; 1291 int err; 1292 const struct firmware *fw; 1293 const char *fw_name = "edgeport/down3.bin"; 1294 1295 /* Validate Hardware version number 1296 * Read Manufacturing Descriptor from TI Based Edgeport 1297 */ 1298 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL); 1299 if (!ti_manuf_desc) { 1300 dev_err(dev, "%s - out of memory.\n", __func__); 1301 return -ENOMEM; 1302 } 1303 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc); 1304 if (status) { 1305 kfree(ti_manuf_desc); 1306 goto stayinbootmode; 1307 } 1308 1309 /* Check for version 2 */ 1310 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { 1311 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n", 1312 __func__, ti_cpu_rev(ti_manuf_desc)); 1313 kfree(ti_manuf_desc); 1314 goto stayinbootmode; 1315 } 1316 1317 kfree(ti_manuf_desc); 1318 1319 /* 1320 * In order to update the I2C firmware we must change the type 1321 * 2 record to type 0xF2. This will force the UMP to come up 1322 * in Boot Mode. Then while in boot mode, the driver will 1323 * download the latest firmware (padded to 15.5k) into the 1324 * UMP ram. Finally when the device comes back up in download 1325 * mode the driver will cause the new firmware to be copied 1326 * from the UMP Ram to I2C and the firmware will update the 1327 * record type from 0xf2 to 0x02. 1328 * 1329 * Do we really have to copy the whole firmware image, 1330 * or could we do this in place! 1331 */ 1332 1333 /* Allocate a 15.5k buffer + 3 byte header */ 1334 buffer_size = (((1024 * 16) - 512) + 1335 sizeof(struct ti_i2c_image_header)); 1336 buffer = kmalloc(buffer_size, GFP_KERNEL); 1337 if (!buffer) { 1338 dev_err(dev, "%s - out of memory\n", __func__); 1339 return -ENOMEM; 1340 } 1341 1342 /* Initialize the buffer to 0xff (pad the buffer) */ 1343 memset(buffer, 0xff, buffer_size); 1344 1345 err = request_firmware(&fw, fw_name, dev); 1346 if (err) { 1347 dev_err(dev, "Failed to load image \"%s\" err %d\n", 1348 fw_name, err); 1349 kfree(buffer); 1350 return err; 1351 } 1352 memcpy(buffer, &fw->data[4], fw->size - 4); 1353 release_firmware(fw); 1354 1355 for (i = sizeof(struct ti_i2c_image_header); 1356 i < buffer_size; i++) { 1357 cs = (__u8)(cs + buffer[i]); 1358 } 1359 1360 header = (struct ti_i2c_image_header *)buffer; 1361 1362 /* update length and checksum after padding */ 1363 header->Length = cpu_to_le16((__u16)(buffer_size - 1364 sizeof(struct ti_i2c_image_header))); 1365 header->CheckSum = cs; 1366 1367 /* Download the operational code */ 1368 dev_dbg(dev, "%s - Downloading operational code image (TI UMP)\n", __func__); 1369 status = download_code(serial, buffer, buffer_size); 1370 1371 kfree(buffer); 1372 1373 if (status) { 1374 dev_dbg(dev, "%s - Error downloading operational code image\n", __func__); 1375 return status; 1376 } 1377 1378 /* Device will reboot */ 1379 serial->product_info.TiMode = TI_MODE_TRANSITIONING; 1380 1381 dev_dbg(dev, "%s - Download successful -- Device rebooting...\n", __func__); 1382 1383 /* return an error on purpose */ 1384 return -ENODEV; 1385 } 1386 1387 stayinbootmode: 1388 /* Eprom is invalid or blank stay in boot mode */ 1389 dev_dbg(dev, "%s - STAYING IN BOOT MODE\n", __func__); 1390 serial->product_info.TiMode = TI_MODE_BOOT; 1391 1392 return 0; 1393 } 1394 1395 1396 static int ti_do_config(struct edgeport_port *port, int feature, int on) 1397 { 1398 int port_number = port->port->number - port->port->serial->minor; 1399 on = !!on; /* 1 or 0 not bitmask */ 1400 return send_cmd(port->port->serial->dev, 1401 feature, (__u8)(UMPM_UART1_PORT + port_number), 1402 on, NULL, 0); 1403 } 1404 1405 1406 static int restore_mcr(struct edgeport_port *port, __u8 mcr) 1407 { 1408 int status = 0; 1409 1410 dev_dbg(&port->port->dev, "%s - %x\n", __func__, mcr); 1411 1412 status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR); 1413 if (status) 1414 return status; 1415 status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS); 1416 if (status) 1417 return status; 1418 return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK); 1419 } 1420 1421 /* Convert TI LSR to standard UART flags */ 1422 static __u8 map_line_status(__u8 ti_lsr) 1423 { 1424 __u8 lsr = 0; 1425 1426 #define MAP_FLAG(flagUmp, flagUart) \ 1427 if (ti_lsr & flagUmp) \ 1428 lsr |= flagUart; 1429 1430 MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */ 1431 MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */ 1432 MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */ 1433 MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */ 1434 MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* rx data available */ 1435 MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* tx hold reg empty */ 1436 1437 #undef MAP_FLAG 1438 1439 return lsr; 1440 } 1441 1442 static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr) 1443 { 1444 struct async_icount *icount; 1445 struct tty_struct *tty; 1446 1447 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, msr); 1448 1449 if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | 1450 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { 1451 icount = &edge_port->icount; 1452 1453 /* update input line counters */ 1454 if (msr & EDGEPORT_MSR_DELTA_CTS) 1455 icount->cts++; 1456 if (msr & EDGEPORT_MSR_DELTA_DSR) 1457 icount->dsr++; 1458 if (msr & EDGEPORT_MSR_DELTA_CD) 1459 icount->dcd++; 1460 if (msr & EDGEPORT_MSR_DELTA_RI) 1461 icount->rng++; 1462 wake_up_interruptible(&edge_port->delta_msr_wait); 1463 } 1464 1465 /* Save the new modem status */ 1466 edge_port->shadow_msr = msr & 0xf0; 1467 1468 tty = tty_port_tty_get(&edge_port->port->port); 1469 /* handle CTS flow control */ 1470 if (tty && C_CRTSCTS(tty)) { 1471 if (msr & EDGEPORT_MSR_CTS) { 1472 tty->hw_stopped = 0; 1473 tty_wakeup(tty); 1474 } else { 1475 tty->hw_stopped = 1; 1476 } 1477 } 1478 tty_kref_put(tty); 1479 } 1480 1481 static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data, 1482 __u8 lsr, __u8 data) 1483 { 1484 struct async_icount *icount; 1485 __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR | 1486 LSR_FRM_ERR | LSR_BREAK)); 1487 1488 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, new_lsr); 1489 1490 edge_port->shadow_lsr = lsr; 1491 1492 if (new_lsr & LSR_BREAK) 1493 /* 1494 * Parity and Framing errors only count if they 1495 * occur exclusive of a break being received. 1496 */ 1497 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK); 1498 1499 /* Place LSR data byte into Rx buffer */ 1500 if (lsr_data) 1501 edge_tty_recv(edge_port->port, &data, 1); 1502 1503 /* update input line counters */ 1504 icount = &edge_port->icount; 1505 if (new_lsr & LSR_BREAK) 1506 icount->brk++; 1507 if (new_lsr & LSR_OVER_ERR) 1508 icount->overrun++; 1509 if (new_lsr & LSR_PAR_ERR) 1510 icount->parity++; 1511 if (new_lsr & LSR_FRM_ERR) 1512 icount->frame++; 1513 } 1514 1515 1516 static void edge_interrupt_callback(struct urb *urb) 1517 { 1518 struct edgeport_serial *edge_serial = urb->context; 1519 struct usb_serial_port *port; 1520 struct edgeport_port *edge_port; 1521 struct device *dev; 1522 unsigned char *data = urb->transfer_buffer; 1523 int length = urb->actual_length; 1524 int port_number; 1525 int function; 1526 int retval; 1527 __u8 lsr; 1528 __u8 msr; 1529 int status = urb->status; 1530 1531 switch (status) { 1532 case 0: 1533 /* success */ 1534 break; 1535 case -ECONNRESET: 1536 case -ENOENT: 1537 case -ESHUTDOWN: 1538 /* this urb is terminated, clean up */ 1539 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", 1540 __func__, status); 1541 return; 1542 default: 1543 dev_err(&urb->dev->dev, "%s - nonzero urb status received: " 1544 "%d\n", __func__, status); 1545 goto exit; 1546 } 1547 1548 if (!length) { 1549 dev_dbg(&urb->dev->dev, "%s - no data in urb\n", __func__); 1550 goto exit; 1551 } 1552 1553 dev = &edge_serial->serial->dev->dev; 1554 usb_serial_debug_data(dev, __func__, length, data); 1555 1556 if (length != 2) { 1557 dev_dbg(dev, "%s - expecting packet of size 2, got %d\n", __func__, length); 1558 goto exit; 1559 } 1560 1561 port_number = TIUMP_GET_PORT_FROM_CODE(data[0]); 1562 function = TIUMP_GET_FUNC_FROM_CODE(data[0]); 1563 dev_dbg(dev, "%s - port_number %d, function %d, info 0x%x\n", __func__, 1564 port_number, function, data[1]); 1565 port = edge_serial->serial->port[port_number]; 1566 edge_port = usb_get_serial_port_data(port); 1567 if (!edge_port) { 1568 dev_dbg(dev, "%s - edge_port not found\n", __func__); 1569 return; 1570 } 1571 switch (function) { 1572 case TIUMP_INTERRUPT_CODE_LSR: 1573 lsr = map_line_status(data[1]); 1574 if (lsr & UMP_UART_LSR_DATA_MASK) { 1575 /* Save the LSR event for bulk read 1576 completion routine */ 1577 dev_dbg(dev, "%s - LSR Event Port %u LSR Status = %02x\n", 1578 __func__, port_number, lsr); 1579 edge_port->lsr_event = 1; 1580 edge_port->lsr_mask = lsr; 1581 } else { 1582 dev_dbg(dev, "%s - ===== Port %d LSR Status = %02x ======\n", 1583 __func__, port_number, lsr); 1584 handle_new_lsr(edge_port, 0, lsr, 0); 1585 } 1586 break; 1587 1588 case TIUMP_INTERRUPT_CODE_MSR: /* MSR */ 1589 /* Copy MSR from UMP */ 1590 msr = data[1]; 1591 dev_dbg(dev, "%s - ===== Port %u MSR Status = %02x ======\n", 1592 __func__, port_number, msr); 1593 handle_new_msr(edge_port, msr); 1594 break; 1595 1596 default: 1597 dev_err(&urb->dev->dev, 1598 "%s - Unknown Interrupt code from UMP %x\n", 1599 __func__, data[1]); 1600 break; 1601 1602 } 1603 1604 exit: 1605 retval = usb_submit_urb(urb, GFP_ATOMIC); 1606 if (retval) 1607 dev_err(&urb->dev->dev, 1608 "%s - usb_submit_urb failed with result %d\n", 1609 __func__, retval); 1610 } 1611 1612 static void edge_bulk_in_callback(struct urb *urb) 1613 { 1614 struct edgeport_port *edge_port = urb->context; 1615 struct device *dev = &edge_port->port->dev; 1616 unsigned char *data = urb->transfer_buffer; 1617 int retval = 0; 1618 int port_number; 1619 int status = urb->status; 1620 1621 switch (status) { 1622 case 0: 1623 /* success */ 1624 break; 1625 case -ECONNRESET: 1626 case -ENOENT: 1627 case -ESHUTDOWN: 1628 /* this urb is terminated, clean up */ 1629 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status); 1630 return; 1631 default: 1632 dev_err(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", __func__, status); 1633 } 1634 1635 if (status == -EPIPE) 1636 goto exit; 1637 1638 if (status) { 1639 dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__); 1640 return; 1641 } 1642 1643 port_number = edge_port->port->number - edge_port->port->serial->minor; 1644 1645 if (edge_port->lsr_event) { 1646 edge_port->lsr_event = 0; 1647 dev_dbg(dev, "%s ===== Port %u LSR Status = %02x, Data = %02x ======\n", 1648 __func__, port_number, edge_port->lsr_mask, *data); 1649 handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data); 1650 /* Adjust buffer length/pointer */ 1651 --urb->actual_length; 1652 ++data; 1653 } 1654 1655 if (urb->actual_length) { 1656 usb_serial_debug_data(dev, __func__, urb->actual_length, data); 1657 if (edge_port->close_pending) 1658 dev_dbg(dev, "%s - close pending, dropping data on the floor\n", 1659 __func__); 1660 else 1661 edge_tty_recv(edge_port->port, data, 1662 urb->actual_length); 1663 edge_port->icount.rx += urb->actual_length; 1664 } 1665 1666 exit: 1667 /* continue read unless stopped */ 1668 spin_lock(&edge_port->ep_lock); 1669 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) 1670 retval = usb_submit_urb(urb, GFP_ATOMIC); 1671 else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING) 1672 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED; 1673 1674 spin_unlock(&edge_port->ep_lock); 1675 if (retval) 1676 dev_err(dev, "%s - usb_submit_urb failed with result %d\n", __func__, retval); 1677 } 1678 1679 static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, 1680 int length) 1681 { 1682 int queued; 1683 1684 queued = tty_insert_flip_string(&port->port, data, length); 1685 if (queued < length) 1686 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n", 1687 __func__, length - queued); 1688 tty_flip_buffer_push(&port->port); 1689 } 1690 1691 static void edge_bulk_out_callback(struct urb *urb) 1692 { 1693 struct usb_serial_port *port = urb->context; 1694 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1695 int status = urb->status; 1696 struct tty_struct *tty; 1697 1698 edge_port->ep_write_urb_in_use = 0; 1699 1700 switch (status) { 1701 case 0: 1702 /* success */ 1703 break; 1704 case -ECONNRESET: 1705 case -ENOENT: 1706 case -ESHUTDOWN: 1707 /* this urb is terminated, clean up */ 1708 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", 1709 __func__, status); 1710 return; 1711 default: 1712 dev_err_console(port, "%s - nonzero write bulk status " 1713 "received: %d\n", __func__, status); 1714 } 1715 1716 /* send any buffered data */ 1717 tty = tty_port_tty_get(&port->port); 1718 edge_send(tty); 1719 tty_kref_put(tty); 1720 } 1721 1722 static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) 1723 { 1724 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1725 struct edgeport_serial *edge_serial; 1726 struct usb_device *dev; 1727 struct urb *urb; 1728 int port_number; 1729 int status; 1730 u16 open_settings; 1731 u8 transaction_timeout; 1732 1733 if (edge_port == NULL) 1734 return -ENODEV; 1735 1736 port_number = port->number - port->serial->minor; 1737 switch (port_number) { 1738 case 0: 1739 edge_port->uart_base = UMPMEM_BASE_UART1; 1740 edge_port->dma_address = UMPD_OEDB1_ADDRESS; 1741 break; 1742 case 1: 1743 edge_port->uart_base = UMPMEM_BASE_UART2; 1744 edge_port->dma_address = UMPD_OEDB2_ADDRESS; 1745 break; 1746 default: 1747 dev_err(&port->dev, "Unknown port number!!!\n"); 1748 return -ENODEV; 1749 } 1750 1751 dev_dbg(&port->dev, "%s - port_number = %d, uart_base = %04x, dma_address = %04x\n", 1752 __func__, port_number, edge_port->uart_base, edge_port->dma_address); 1753 1754 dev = port->serial->dev; 1755 1756 memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount)); 1757 init_waitqueue_head(&edge_port->delta_msr_wait); 1758 1759 /* turn off loopback */ 1760 status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0); 1761 if (status) { 1762 dev_err(&port->dev, 1763 "%s - cannot send clear loopback command, %d\n", 1764 __func__, status); 1765 return status; 1766 } 1767 1768 /* set up the port settings */ 1769 if (tty) 1770 edge_set_termios(tty, port, &tty->termios); 1771 1772 /* open up the port */ 1773 1774 /* milliseconds to timeout for DMA transfer */ 1775 transaction_timeout = 2; 1776 1777 edge_port->ump_read_timeout = 1778 max(20, ((transaction_timeout * 3) / 2)); 1779 1780 /* milliseconds to timeout for DMA transfer */ 1781 open_settings = (u8)(UMP_DMA_MODE_CONTINOUS | 1782 UMP_PIPE_TRANS_TIMEOUT_ENA | 1783 (transaction_timeout << 2)); 1784 1785 dev_dbg(&port->dev, "%s - Sending UMPC_OPEN_PORT\n", __func__); 1786 1787 /* Tell TI to open and start the port */ 1788 status = send_cmd(dev, UMPC_OPEN_PORT, 1789 (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0); 1790 if (status) { 1791 dev_err(&port->dev, "%s - cannot send open command, %d\n", 1792 __func__, status); 1793 return status; 1794 } 1795 1796 /* Start the DMA? */ 1797 status = send_cmd(dev, UMPC_START_PORT, 1798 (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0); 1799 if (status) { 1800 dev_err(&port->dev, "%s - cannot send start DMA command, %d\n", 1801 __func__, status); 1802 return status; 1803 } 1804 1805 /* Clear TX and RX buffers in UMP */ 1806 status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN); 1807 if (status) { 1808 dev_err(&port->dev, 1809 "%s - cannot send clear buffers command, %d\n", 1810 __func__, status); 1811 return status; 1812 } 1813 1814 /* Read Initial MSR */ 1815 status = ti_vread_sync(dev, UMPC_READ_MSR, 0, 1816 (__u16)(UMPM_UART1_PORT + port_number), 1817 &edge_port->shadow_msr, 1); 1818 if (status) { 1819 dev_err(&port->dev, "%s - cannot send read MSR command, %d\n", 1820 __func__, status); 1821 return status; 1822 } 1823 1824 dev_dbg(&port->dev, "ShadowMSR 0x%X\n", edge_port->shadow_msr); 1825 1826 /* Set Initial MCR */ 1827 edge_port->shadow_mcr = MCR_RTS | MCR_DTR; 1828 dev_dbg(&port->dev, "ShadowMCR 0x%X\n", edge_port->shadow_mcr); 1829 1830 edge_serial = edge_port->edge_serial; 1831 if (mutex_lock_interruptible(&edge_serial->es_lock)) 1832 return -ERESTARTSYS; 1833 if (edge_serial->num_ports_open == 0) { 1834 /* we are the first port to open, post the interrupt urb */ 1835 urb = edge_serial->serial->port[0]->interrupt_in_urb; 1836 if (!urb) { 1837 dev_err(&port->dev, 1838 "%s - no interrupt urb present, exiting\n", 1839 __func__); 1840 status = -EINVAL; 1841 goto release_es_lock; 1842 } 1843 urb->context = edge_serial; 1844 status = usb_submit_urb(urb, GFP_KERNEL); 1845 if (status) { 1846 dev_err(&port->dev, 1847 "%s - usb_submit_urb failed with value %d\n", 1848 __func__, status); 1849 goto release_es_lock; 1850 } 1851 } 1852 1853 /* 1854 * reset the data toggle on the bulk endpoints to work around bug in 1855 * host controllers where things get out of sync some times 1856 */ 1857 usb_clear_halt(dev, port->write_urb->pipe); 1858 usb_clear_halt(dev, port->read_urb->pipe); 1859 1860 /* start up our bulk read urb */ 1861 urb = port->read_urb; 1862 if (!urb) { 1863 dev_err(&port->dev, "%s - no read urb present, exiting\n", 1864 __func__); 1865 status = -EINVAL; 1866 goto unlink_int_urb; 1867 } 1868 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; 1869 urb->context = edge_port; 1870 status = usb_submit_urb(urb, GFP_KERNEL); 1871 if (status) { 1872 dev_err(&port->dev, 1873 "%s - read bulk usb_submit_urb failed with value %d\n", 1874 __func__, status); 1875 goto unlink_int_urb; 1876 } 1877 1878 ++edge_serial->num_ports_open; 1879 1880 port->port.drain_delay = 1; 1881 1882 goto release_es_lock; 1883 1884 unlink_int_urb: 1885 if (edge_port->edge_serial->num_ports_open == 0) 1886 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 1887 release_es_lock: 1888 mutex_unlock(&edge_serial->es_lock); 1889 return status; 1890 } 1891 1892 static void edge_close(struct usb_serial_port *port) 1893 { 1894 struct edgeport_serial *edge_serial; 1895 struct edgeport_port *edge_port; 1896 struct usb_serial *serial = port->serial; 1897 unsigned long flags; 1898 int port_number; 1899 1900 edge_serial = usb_get_serial_data(port->serial); 1901 edge_port = usb_get_serial_port_data(port); 1902 if (edge_serial == NULL || edge_port == NULL) 1903 return; 1904 1905 /* The bulkreadcompletion routine will check 1906 * this flag and dump add read data */ 1907 edge_port->close_pending = 1; 1908 1909 usb_kill_urb(port->read_urb); 1910 usb_kill_urb(port->write_urb); 1911 edge_port->ep_write_urb_in_use = 0; 1912 spin_lock_irqsave(&edge_port->ep_lock, flags); 1913 kfifo_reset_out(&edge_port->write_fifo); 1914 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1915 1916 /* assuming we can still talk to the device, 1917 * send a close port command to it */ 1918 dev_dbg(&port->dev, "%s - send umpc_close_port\n", __func__); 1919 port_number = port->number - port->serial->minor; 1920 1921 mutex_lock(&serial->disc_mutex); 1922 if (!serial->disconnected) { 1923 send_cmd(serial->dev, 1924 UMPC_CLOSE_PORT, 1925 (__u8)(UMPM_UART1_PORT + port_number), 1926 0, 1927 NULL, 1928 0); 1929 } 1930 mutex_unlock(&serial->disc_mutex); 1931 1932 mutex_lock(&edge_serial->es_lock); 1933 --edge_port->edge_serial->num_ports_open; 1934 if (edge_port->edge_serial->num_ports_open <= 0) { 1935 /* last port is now closed, let's shut down our interrupt urb */ 1936 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 1937 edge_port->edge_serial->num_ports_open = 0; 1938 } 1939 mutex_unlock(&edge_serial->es_lock); 1940 edge_port->close_pending = 0; 1941 } 1942 1943 static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, 1944 const unsigned char *data, int count) 1945 { 1946 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1947 1948 if (count == 0) { 1949 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__); 1950 return 0; 1951 } 1952 1953 if (edge_port == NULL) 1954 return -ENODEV; 1955 if (edge_port->close_pending == 1) 1956 return -ENODEV; 1957 1958 count = kfifo_in_locked(&edge_port->write_fifo, data, count, 1959 &edge_port->ep_lock); 1960 edge_send(tty); 1961 1962 return count; 1963 } 1964 1965 static void edge_send(struct tty_struct *tty) 1966 { 1967 struct usb_serial_port *port = tty->driver_data; 1968 int count, result; 1969 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1970 unsigned long flags; 1971 1972 spin_lock_irqsave(&edge_port->ep_lock, flags); 1973 1974 if (edge_port->ep_write_urb_in_use) { 1975 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1976 return; 1977 } 1978 1979 count = kfifo_out(&edge_port->write_fifo, 1980 port->write_urb->transfer_buffer, 1981 port->bulk_out_size); 1982 1983 if (count == 0) { 1984 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1985 return; 1986 } 1987 1988 edge_port->ep_write_urb_in_use = 1; 1989 1990 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1991 1992 usb_serial_debug_data(&port->dev, __func__, count, port->write_urb->transfer_buffer); 1993 1994 /* set up our urb */ 1995 port->write_urb->transfer_buffer_length = count; 1996 1997 /* send the data out the bulk port */ 1998 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 1999 if (result) { 2000 dev_err_console(port, 2001 "%s - failed submitting write urb, error %d\n", 2002 __func__, result); 2003 edge_port->ep_write_urb_in_use = 0; 2004 /* TODO: reschedule edge_send */ 2005 } else 2006 edge_port->icount.tx += count; 2007 2008 /* wakeup any process waiting for writes to complete */ 2009 /* there is now more room in the buffer for new writes */ 2010 if (tty) 2011 tty_wakeup(tty); 2012 } 2013 2014 static int edge_write_room(struct tty_struct *tty) 2015 { 2016 struct usb_serial_port *port = tty->driver_data; 2017 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2018 int room = 0; 2019 unsigned long flags; 2020 2021 if (edge_port == NULL) 2022 return 0; 2023 if (edge_port->close_pending == 1) 2024 return 0; 2025 2026 spin_lock_irqsave(&edge_port->ep_lock, flags); 2027 room = kfifo_avail(&edge_port->write_fifo); 2028 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2029 2030 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room); 2031 return room; 2032 } 2033 2034 static int edge_chars_in_buffer(struct tty_struct *tty) 2035 { 2036 struct usb_serial_port *port = tty->driver_data; 2037 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2038 int chars = 0; 2039 unsigned long flags; 2040 int ret; 2041 2042 if (edge_port == NULL) 2043 return 0; 2044 2045 spin_lock_irqsave(&edge_port->ep_lock, flags); 2046 chars = kfifo_len(&edge_port->write_fifo); 2047 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2048 2049 if (!chars) { 2050 ret = tx_active(edge_port); 2051 if (ret > 0) 2052 chars = ret; 2053 } 2054 2055 dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars); 2056 return chars; 2057 } 2058 2059 static void edge_throttle(struct tty_struct *tty) 2060 { 2061 struct usb_serial_port *port = tty->driver_data; 2062 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2063 int status; 2064 2065 if (edge_port == NULL) 2066 return; 2067 2068 /* if we are implementing XON/XOFF, send the stop character */ 2069 if (I_IXOFF(tty)) { 2070 unsigned char stop_char = STOP_CHAR(tty); 2071 status = edge_write(tty, port, &stop_char, 1); 2072 if (status <= 0) { 2073 dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status); 2074 } 2075 } 2076 2077 /* if we are implementing RTS/CTS, stop reads */ 2078 /* and the Edgeport will clear the RTS line */ 2079 if (C_CRTSCTS(tty)) 2080 stop_read(edge_port); 2081 2082 } 2083 2084 static void edge_unthrottle(struct tty_struct *tty) 2085 { 2086 struct usb_serial_port *port = tty->driver_data; 2087 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2088 int status; 2089 2090 if (edge_port == NULL) 2091 return; 2092 2093 /* if we are implementing XON/XOFF, send the start character */ 2094 if (I_IXOFF(tty)) { 2095 unsigned char start_char = START_CHAR(tty); 2096 status = edge_write(tty, port, &start_char, 1); 2097 if (status <= 0) { 2098 dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status); 2099 } 2100 } 2101 /* if we are implementing RTS/CTS, restart reads */ 2102 /* are the Edgeport will assert the RTS line */ 2103 if (C_CRTSCTS(tty)) { 2104 status = restart_read(edge_port); 2105 if (status) 2106 dev_err(&port->dev, 2107 "%s - read bulk usb_submit_urb failed: %d\n", 2108 __func__, status); 2109 } 2110 2111 } 2112 2113 static void stop_read(struct edgeport_port *edge_port) 2114 { 2115 unsigned long flags; 2116 2117 spin_lock_irqsave(&edge_port->ep_lock, flags); 2118 2119 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) 2120 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING; 2121 edge_port->shadow_mcr &= ~MCR_RTS; 2122 2123 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2124 } 2125 2126 static int restart_read(struct edgeport_port *edge_port) 2127 { 2128 struct urb *urb; 2129 int status = 0; 2130 unsigned long flags; 2131 2132 spin_lock_irqsave(&edge_port->ep_lock, flags); 2133 2134 if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) { 2135 urb = edge_port->port->read_urb; 2136 status = usb_submit_urb(urb, GFP_ATOMIC); 2137 } 2138 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; 2139 edge_port->shadow_mcr |= MCR_RTS; 2140 2141 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2142 2143 return status; 2144 } 2145 2146 static void change_port_settings(struct tty_struct *tty, 2147 struct edgeport_port *edge_port, struct ktermios *old_termios) 2148 { 2149 struct device *dev = &edge_port->port->dev; 2150 struct ump_uart_config *config; 2151 int baud; 2152 unsigned cflag; 2153 int status; 2154 int port_number = edge_port->port->number - 2155 edge_port->port->serial->minor; 2156 2157 dev_dbg(dev, "%s - port %d\n", __func__, edge_port->port->number); 2158 2159 config = kmalloc (sizeof (*config), GFP_KERNEL); 2160 if (!config) { 2161 tty->termios = *old_termios; 2162 dev_err(dev, "%s - out of memory\n", __func__); 2163 return; 2164 } 2165 2166 cflag = tty->termios.c_cflag; 2167 2168 config->wFlags = 0; 2169 2170 /* These flags must be set */ 2171 config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT; 2172 config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR; 2173 config->bUartMode = (__u8)(edge_port->bUartMode); 2174 2175 switch (cflag & CSIZE) { 2176 case CS5: 2177 config->bDataBits = UMP_UART_CHAR5BITS; 2178 dev_dbg(dev, "%s - data bits = 5\n", __func__); 2179 break; 2180 case CS6: 2181 config->bDataBits = UMP_UART_CHAR6BITS; 2182 dev_dbg(dev, "%s - data bits = 6\n", __func__); 2183 break; 2184 case CS7: 2185 config->bDataBits = UMP_UART_CHAR7BITS; 2186 dev_dbg(dev, "%s - data bits = 7\n", __func__); 2187 break; 2188 default: 2189 case CS8: 2190 config->bDataBits = UMP_UART_CHAR8BITS; 2191 dev_dbg(dev, "%s - data bits = 8\n", __func__); 2192 break; 2193 } 2194 2195 if (cflag & PARENB) { 2196 if (cflag & PARODD) { 2197 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; 2198 config->bParity = UMP_UART_ODDPARITY; 2199 dev_dbg(dev, "%s - parity = odd\n", __func__); 2200 } else { 2201 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; 2202 config->bParity = UMP_UART_EVENPARITY; 2203 dev_dbg(dev, "%s - parity = even\n", __func__); 2204 } 2205 } else { 2206 config->bParity = UMP_UART_NOPARITY; 2207 dev_dbg(dev, "%s - parity = none\n", __func__); 2208 } 2209 2210 if (cflag & CSTOPB) { 2211 config->bStopBits = UMP_UART_STOPBIT2; 2212 dev_dbg(dev, "%s - stop bits = 2\n", __func__); 2213 } else { 2214 config->bStopBits = UMP_UART_STOPBIT1; 2215 dev_dbg(dev, "%s - stop bits = 1\n", __func__); 2216 } 2217 2218 /* figure out the flow control settings */ 2219 if (cflag & CRTSCTS) { 2220 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW; 2221 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW; 2222 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__); 2223 } else { 2224 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__); 2225 tty->hw_stopped = 0; 2226 restart_read(edge_port); 2227 } 2228 2229 /* if we are implementing XON/XOFF, set the start and stop 2230 character in the device */ 2231 config->cXon = START_CHAR(tty); 2232 config->cXoff = STOP_CHAR(tty); 2233 2234 /* if we are implementing INBOUND XON/XOFF */ 2235 if (I_IXOFF(tty)) { 2236 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X; 2237 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", 2238 __func__, config->cXon, config->cXoff); 2239 } else 2240 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__); 2241 2242 /* if we are implementing OUTBOUND XON/XOFF */ 2243 if (I_IXON(tty)) { 2244 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X; 2245 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", 2246 __func__, config->cXon, config->cXoff); 2247 } else 2248 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__); 2249 2250 tty->termios.c_cflag &= ~CMSPAR; 2251 2252 /* Round the baud rate */ 2253 baud = tty_get_baud_rate(tty); 2254 if (!baud) { 2255 /* pick a default, any default... */ 2256 baud = 9600; 2257 } else 2258 tty_encode_baud_rate(tty, baud, baud); 2259 2260 edge_port->baud_rate = baud; 2261 config->wBaudRate = (__u16)((461550L + baud/2) / baud); 2262 2263 /* FIXME: Recompute actual baud from divisor here */ 2264 2265 dev_dbg(dev, "%s - baud rate = %d, wBaudRate = %d\n", __func__, baud, config->wBaudRate); 2266 2267 dev_dbg(dev, "wBaudRate: %d\n", (int)(461550L / config->wBaudRate)); 2268 dev_dbg(dev, "wFlags: 0x%x\n", config->wFlags); 2269 dev_dbg(dev, "bDataBits: %d\n", config->bDataBits); 2270 dev_dbg(dev, "bParity: %d\n", config->bParity); 2271 dev_dbg(dev, "bStopBits: %d\n", config->bStopBits); 2272 dev_dbg(dev, "cXon: %d\n", config->cXon); 2273 dev_dbg(dev, "cXoff: %d\n", config->cXoff); 2274 dev_dbg(dev, "bUartMode: %d\n", config->bUartMode); 2275 2276 /* move the word values into big endian mode */ 2277 cpu_to_be16s(&config->wFlags); 2278 cpu_to_be16s(&config->wBaudRate); 2279 2280 status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG, 2281 (__u8)(UMPM_UART1_PORT + port_number), 2282 0, (__u8 *)config, sizeof(*config)); 2283 if (status) 2284 dev_dbg(dev, "%s - error %d when trying to write config to device\n", 2285 __func__, status); 2286 kfree(config); 2287 } 2288 2289 static void edge_set_termios(struct tty_struct *tty, 2290 struct usb_serial_port *port, struct ktermios *old_termios) 2291 { 2292 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2293 unsigned int cflag; 2294 2295 cflag = tty->termios.c_cflag; 2296 2297 dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__, 2298 tty->termios.c_cflag, tty->termios.c_iflag); 2299 dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__, 2300 old_termios->c_cflag, old_termios->c_iflag); 2301 dev_dbg(&port->dev, "%s - port %d\n", __func__, port->number); 2302 2303 if (edge_port == NULL) 2304 return; 2305 /* change the port settings to the new ones specified */ 2306 change_port_settings(tty, edge_port, old_termios); 2307 } 2308 2309 static int edge_tiocmset(struct tty_struct *tty, 2310 unsigned int set, unsigned int clear) 2311 { 2312 struct usb_serial_port *port = tty->driver_data; 2313 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2314 unsigned int mcr; 2315 unsigned long flags; 2316 2317 spin_lock_irqsave(&edge_port->ep_lock, flags); 2318 mcr = edge_port->shadow_mcr; 2319 if (set & TIOCM_RTS) 2320 mcr |= MCR_RTS; 2321 if (set & TIOCM_DTR) 2322 mcr |= MCR_DTR; 2323 if (set & TIOCM_LOOP) 2324 mcr |= MCR_LOOPBACK; 2325 2326 if (clear & TIOCM_RTS) 2327 mcr &= ~MCR_RTS; 2328 if (clear & TIOCM_DTR) 2329 mcr &= ~MCR_DTR; 2330 if (clear & TIOCM_LOOP) 2331 mcr &= ~MCR_LOOPBACK; 2332 2333 edge_port->shadow_mcr = mcr; 2334 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2335 2336 restore_mcr(edge_port, mcr); 2337 return 0; 2338 } 2339 2340 static int edge_tiocmget(struct tty_struct *tty) 2341 { 2342 struct usb_serial_port *port = tty->driver_data; 2343 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2344 unsigned int result = 0; 2345 unsigned int msr; 2346 unsigned int mcr; 2347 unsigned long flags; 2348 2349 spin_lock_irqsave(&edge_port->ep_lock, flags); 2350 2351 msr = edge_port->shadow_msr; 2352 mcr = edge_port->shadow_mcr; 2353 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ 2354 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ 2355 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ 2356 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */ 2357 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ 2358 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ 2359 2360 2361 dev_dbg(&port->dev, "%s -- %x\n", __func__, result); 2362 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2363 2364 return result; 2365 } 2366 2367 static int edge_get_icount(struct tty_struct *tty, 2368 struct serial_icounter_struct *icount) 2369 { 2370 struct usb_serial_port *port = tty->driver_data; 2371 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2372 struct async_icount *ic = &edge_port->icount; 2373 2374 icount->cts = ic->cts; 2375 icount->dsr = ic->dsr; 2376 icount->rng = ic->rng; 2377 icount->dcd = ic->dcd; 2378 icount->tx = ic->tx; 2379 icount->rx = ic->rx; 2380 icount->frame = ic->frame; 2381 icount->parity = ic->parity; 2382 icount->overrun = ic->overrun; 2383 icount->brk = ic->brk; 2384 icount->buf_overrun = ic->buf_overrun; 2385 return 0; 2386 } 2387 2388 static int get_serial_info(struct edgeport_port *edge_port, 2389 struct serial_struct __user *retinfo) 2390 { 2391 struct serial_struct tmp; 2392 unsigned cwait; 2393 2394 if (!retinfo) 2395 return -EFAULT; 2396 2397 cwait = edge_port->port->port.closing_wait; 2398 if (cwait != ASYNC_CLOSING_WAIT_NONE) 2399 cwait = jiffies_to_msecs(closing_wait) / 10; 2400 2401 memset(&tmp, 0, sizeof(tmp)); 2402 2403 tmp.type = PORT_16550A; 2404 tmp.line = edge_port->port->serial->minor; 2405 tmp.port = edge_port->port->number; 2406 tmp.irq = 0; 2407 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; 2408 tmp.xmit_fifo_size = edge_port->port->bulk_out_size; 2409 tmp.baud_base = 9600; 2410 tmp.close_delay = 5*HZ; 2411 tmp.closing_wait = cwait; 2412 2413 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) 2414 return -EFAULT; 2415 return 0; 2416 } 2417 2418 static int edge_ioctl(struct tty_struct *tty, 2419 unsigned int cmd, unsigned long arg) 2420 { 2421 struct usb_serial_port *port = tty->driver_data; 2422 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2423 struct async_icount cnow; 2424 struct async_icount cprev; 2425 2426 dev_dbg(&port->dev, "%s - port %d, cmd = 0x%x\n", __func__, port->number, cmd); 2427 2428 switch (cmd) { 2429 case TIOCGSERIAL: 2430 dev_dbg(&port->dev, "%s - TIOCGSERIAL\n", __func__); 2431 return get_serial_info(edge_port, 2432 (struct serial_struct __user *) arg); 2433 case TIOCMIWAIT: 2434 dev_dbg(&port->dev, "%s - TIOCMIWAIT\n", __func__); 2435 cprev = edge_port->icount; 2436 while (1) { 2437 interruptible_sleep_on(&edge_port->delta_msr_wait); 2438 /* see if a signal did it */ 2439 if (signal_pending(current)) 2440 return -ERESTARTSYS; 2441 cnow = edge_port->icount; 2442 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && 2443 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) 2444 return -EIO; /* no change => error */ 2445 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || 2446 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || 2447 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || 2448 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) { 2449 return 0; 2450 } 2451 cprev = cnow; 2452 } 2453 /* not reached */ 2454 break; 2455 } 2456 return -ENOIOCTLCMD; 2457 } 2458 2459 static void edge_break(struct tty_struct *tty, int break_state) 2460 { 2461 struct usb_serial_port *port = tty->driver_data; 2462 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2463 int status; 2464 int bv = 0; /* Off */ 2465 2466 tty_wait_until_sent(tty, 0); 2467 2468 if (break_state == -1) 2469 bv = 1; /* On */ 2470 status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv); 2471 if (status) 2472 dev_dbg(&port->dev, "%s - error %d sending break set/clear command.\n", 2473 __func__, status); 2474 } 2475 2476 static int edge_startup(struct usb_serial *serial) 2477 { 2478 struct edgeport_serial *edge_serial; 2479 int status; 2480 2481 /* create our private serial structure */ 2482 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL); 2483 if (edge_serial == NULL) { 2484 dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__); 2485 return -ENOMEM; 2486 } 2487 mutex_init(&edge_serial->es_lock); 2488 edge_serial->serial = serial; 2489 usb_set_serial_data(serial, edge_serial); 2490 2491 status = download_fw(edge_serial); 2492 if (status) { 2493 kfree(edge_serial); 2494 return status; 2495 } 2496 2497 return 0; 2498 } 2499 2500 static void edge_disconnect(struct usb_serial *serial) 2501 { 2502 } 2503 2504 static void edge_release(struct usb_serial *serial) 2505 { 2506 kfree(usb_get_serial_data(serial)); 2507 } 2508 2509 static int edge_port_probe(struct usb_serial_port *port) 2510 { 2511 struct edgeport_port *edge_port; 2512 int ret; 2513 2514 edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL); 2515 if (!edge_port) 2516 return -ENOMEM; 2517 2518 ret = kfifo_alloc(&edge_port->write_fifo, EDGE_OUT_BUF_SIZE, 2519 GFP_KERNEL); 2520 if (ret) { 2521 kfree(edge_port); 2522 return -ENOMEM; 2523 } 2524 2525 spin_lock_init(&edge_port->ep_lock); 2526 edge_port->port = port; 2527 edge_port->edge_serial = usb_get_serial_data(port->serial); 2528 edge_port->bUartMode = default_uart_mode; 2529 2530 usb_set_serial_port_data(port, edge_port); 2531 2532 ret = edge_create_sysfs_attrs(port); 2533 if (ret) { 2534 kfifo_free(&edge_port->write_fifo); 2535 kfree(edge_port); 2536 return ret; 2537 } 2538 2539 port->port.closing_wait = msecs_to_jiffies(closing_wait * 10); 2540 2541 return 0; 2542 } 2543 2544 static int edge_port_remove(struct usb_serial_port *port) 2545 { 2546 struct edgeport_port *edge_port; 2547 2548 edge_port = usb_get_serial_port_data(port); 2549 2550 edge_remove_sysfs_attrs(port); 2551 kfifo_free(&edge_port->write_fifo); 2552 kfree(edge_port); 2553 2554 return 0; 2555 } 2556 2557 /* Sysfs Attributes */ 2558 2559 static ssize_t show_uart_mode(struct device *dev, 2560 struct device_attribute *attr, char *buf) 2561 { 2562 struct usb_serial_port *port = to_usb_serial_port(dev); 2563 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2564 2565 return sprintf(buf, "%d\n", edge_port->bUartMode); 2566 } 2567 2568 static ssize_t store_uart_mode(struct device *dev, 2569 struct device_attribute *attr, const char *valbuf, size_t count) 2570 { 2571 struct usb_serial_port *port = to_usb_serial_port(dev); 2572 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2573 unsigned int v = simple_strtoul(valbuf, NULL, 0); 2574 2575 dev_dbg(dev, "%s: setting uart_mode = %d\n", __func__, v); 2576 2577 if (v < 256) 2578 edge_port->bUartMode = v; 2579 else 2580 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v); 2581 2582 return count; 2583 } 2584 2585 static DEVICE_ATTR(uart_mode, S_IWUSR | S_IRUGO, show_uart_mode, 2586 store_uart_mode); 2587 2588 static int edge_create_sysfs_attrs(struct usb_serial_port *port) 2589 { 2590 return device_create_file(&port->dev, &dev_attr_uart_mode); 2591 } 2592 2593 static int edge_remove_sysfs_attrs(struct usb_serial_port *port) 2594 { 2595 device_remove_file(&port->dev, &dev_attr_uart_mode); 2596 return 0; 2597 } 2598 2599 2600 static struct usb_serial_driver edgeport_1port_device = { 2601 .driver = { 2602 .owner = THIS_MODULE, 2603 .name = "edgeport_ti_1", 2604 }, 2605 .description = "Edgeport TI 1 port adapter", 2606 .id_table = edgeport_1port_id_table, 2607 .num_ports = 1, 2608 .open = edge_open, 2609 .close = edge_close, 2610 .throttle = edge_throttle, 2611 .unthrottle = edge_unthrottle, 2612 .attach = edge_startup, 2613 .disconnect = edge_disconnect, 2614 .release = edge_release, 2615 .port_probe = edge_port_probe, 2616 .port_remove = edge_port_remove, 2617 .ioctl = edge_ioctl, 2618 .set_termios = edge_set_termios, 2619 .tiocmget = edge_tiocmget, 2620 .tiocmset = edge_tiocmset, 2621 .get_icount = edge_get_icount, 2622 .write = edge_write, 2623 .write_room = edge_write_room, 2624 .chars_in_buffer = edge_chars_in_buffer, 2625 .break_ctl = edge_break, 2626 .read_int_callback = edge_interrupt_callback, 2627 .read_bulk_callback = edge_bulk_in_callback, 2628 .write_bulk_callback = edge_bulk_out_callback, 2629 }; 2630 2631 static struct usb_serial_driver edgeport_2port_device = { 2632 .driver = { 2633 .owner = THIS_MODULE, 2634 .name = "edgeport_ti_2", 2635 }, 2636 .description = "Edgeport TI 2 port adapter", 2637 .id_table = edgeport_2port_id_table, 2638 .num_ports = 2, 2639 .open = edge_open, 2640 .close = edge_close, 2641 .throttle = edge_throttle, 2642 .unthrottle = edge_unthrottle, 2643 .attach = edge_startup, 2644 .disconnect = edge_disconnect, 2645 .release = edge_release, 2646 .port_probe = edge_port_probe, 2647 .port_remove = edge_port_remove, 2648 .ioctl = edge_ioctl, 2649 .set_termios = edge_set_termios, 2650 .tiocmget = edge_tiocmget, 2651 .tiocmset = edge_tiocmset, 2652 .write = edge_write, 2653 .write_room = edge_write_room, 2654 .chars_in_buffer = edge_chars_in_buffer, 2655 .break_ctl = edge_break, 2656 .read_int_callback = edge_interrupt_callback, 2657 .read_bulk_callback = edge_bulk_in_callback, 2658 .write_bulk_callback = edge_bulk_out_callback, 2659 }; 2660 2661 static struct usb_serial_driver * const serial_drivers[] = { 2662 &edgeport_1port_device, &edgeport_2port_device, NULL 2663 }; 2664 2665 module_usb_serial_driver(serial_drivers, id_table_combined); 2666 2667 MODULE_AUTHOR(DRIVER_AUTHOR); 2668 MODULE_DESCRIPTION(DRIVER_DESC); 2669 MODULE_LICENSE("GPL"); 2670 MODULE_FIRMWARE("edgeport/down3.bin"); 2671 2672 module_param(closing_wait, int, S_IRUGO | S_IWUSR); 2673 MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs"); 2674 2675 module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR); 2676 MODULE_PARM_DESC(ignore_cpu_rev, 2677 "Ignore the cpu revision when connecting to a device"); 2678 2679 module_param(default_uart_mode, int, S_IRUGO | S_IWUSR); 2680 MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ..."); 2681