1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Edgeport USB Serial Converter driver 4 * 5 * Copyright (C) 2000-2002 Inside Out Networks, All rights reserved. 6 * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> 7 * 8 * Supports the following devices: 9 * EP/1 EP/2 EP/4 EP/21 EP/22 EP/221 EP/42 EP/421 WATCHPORT 10 * 11 * For questions or problems with this driver, contact Inside Out 12 * Networks technical support, or Peter Berger <pberger@brimson.com>, 13 * or Al Borchers <alborchers@steinerpoint.com>. 14 */ 15 16 #include <linux/kernel.h> 17 #include <linux/jiffies.h> 18 #include <linux/errno.h> 19 #include <linux/slab.h> 20 #include <linux/tty.h> 21 #include <linux/tty_flip.h> 22 #include <linux/module.h> 23 #include <linux/spinlock.h> 24 #include <linux/mutex.h> 25 #include <linux/serial.h> 26 #include <linux/swab.h> 27 #include <linux/kfifo.h> 28 #include <linux/ioctl.h> 29 #include <linux/firmware.h> 30 #include <linux/usb.h> 31 #include <linux/usb/serial.h> 32 33 #include "io_16654.h" 34 #include "io_usbvend.h" 35 #include "io_ti.h" 36 37 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli" 38 #define DRIVER_DESC "Edgeport USB Serial Driver" 39 40 #define EPROM_PAGE_SIZE 64 41 42 43 /* different hardware types */ 44 #define HARDWARE_TYPE_930 0 45 #define HARDWARE_TYPE_TIUMP 1 46 47 /* IOCTL_PRIVATE_TI_GET_MODE Definitions */ 48 #define TI_MODE_CONFIGURING 0 /* Device has not entered start device */ 49 #define TI_MODE_BOOT 1 /* Staying in boot mode */ 50 #define TI_MODE_DOWNLOAD 2 /* Made it to download mode */ 51 #define TI_MODE_TRANSITIONING 3 /* 52 * Currently in boot mode but 53 * transitioning to download mode 54 */ 55 56 /* read urb state */ 57 #define EDGE_READ_URB_RUNNING 0 58 #define EDGE_READ_URB_STOPPING 1 59 #define EDGE_READ_URB_STOPPED 2 60 61 62 /* Product information read from the Edgeport */ 63 struct product_info { 64 int TiMode; /* Current TI Mode */ 65 u8 hardware_type; /* Type of hardware */ 66 } __packed; 67 68 /* 69 * Edgeport firmware header 70 * 71 * "build_number" has been set to 0 in all three of the images I have 72 * seen, and Digi Tech Support suggests that it is safe to ignore it. 73 * 74 * "length" is the number of bytes of actual data following the header. 75 * 76 * "checksum" is the low order byte resulting from adding the values of 77 * all the data bytes. 78 */ 79 struct edgeport_fw_hdr { 80 u8 major_version; 81 u8 minor_version; 82 __le16 build_number; 83 __le16 length; 84 u8 checksum; 85 } __packed; 86 87 struct edgeport_port { 88 u16 uart_base; 89 u16 dma_address; 90 u8 shadow_msr; 91 u8 shadow_mcr; 92 u8 shadow_lsr; 93 u8 lsr_mask; 94 u32 ump_read_timeout; /* 95 * Number of milliseconds the UMP will 96 * wait without data before completing 97 * a read short 98 */ 99 int baud_rate; 100 int close_pending; 101 int lsr_event; 102 103 struct edgeport_serial *edge_serial; 104 struct usb_serial_port *port; 105 u8 bUartMode; /* Port type, 0: RS232, etc. */ 106 spinlock_t ep_lock; 107 int ep_read_urb_state; 108 int ep_write_urb_in_use; 109 }; 110 111 struct edgeport_serial { 112 struct product_info product_info; 113 u8 TI_I2C_Type; /* Type of I2C in UMP */ 114 u8 TiReadI2C; /* 115 * Set to TRUE if we have read the 116 * I2c in Boot Mode 117 */ 118 struct mutex es_lock; 119 int num_ports_open; 120 struct usb_serial *serial; 121 struct delayed_work heartbeat_work; 122 int fw_version; 123 bool use_heartbeat; 124 }; 125 126 127 /* Devices that this driver supports */ 128 static const struct usb_device_id edgeport_1port_id_table[] = { 129 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) }, 130 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) }, 131 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) }, 132 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) }, 133 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) }, 134 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) }, 135 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) }, 136 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) }, 137 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) }, 138 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) }, 139 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) }, 140 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) }, 141 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) }, 142 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) }, 143 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) }, 144 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) }, 145 { } 146 }; 147 148 static const struct usb_device_id edgeport_2port_id_table[] = { 149 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) }, 150 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) }, 151 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) }, 152 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) }, 153 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) }, 154 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) }, 155 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) }, 156 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) }, 157 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) }, 158 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) }, 159 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) }, 160 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) }, 161 /* The 4, 8 and 16 port devices show up as multiple 2 port devices */ 162 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) }, 163 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) }, 164 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) }, 165 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) }, 166 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) }, 167 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_E5805A) }, 168 { } 169 }; 170 171 /* Devices that this driver supports */ 172 static const struct usb_device_id id_table_combined[] = { 173 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) }, 174 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) }, 175 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) }, 176 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) }, 177 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) }, 178 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) }, 179 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) }, 180 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) }, 181 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) }, 182 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) }, 183 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) }, 184 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) }, 185 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) }, 186 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) }, 187 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) }, 188 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) }, 189 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) }, 190 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) }, 191 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) }, 192 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) }, 193 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) }, 194 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) }, 195 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) }, 196 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) }, 197 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) }, 198 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) }, 199 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) }, 200 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) }, 201 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) }, 202 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) }, 203 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) }, 204 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) }, 205 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) }, 206 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_E5805A) }, 207 { } 208 }; 209 210 MODULE_DEVICE_TABLE(usb, id_table_combined); 211 212 static bool ignore_cpu_rev; 213 static int default_uart_mode; /* RS232 */ 214 215 static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, 216 int length); 217 218 static void stop_read(struct edgeport_port *edge_port); 219 static int restart_read(struct edgeport_port *edge_port); 220 221 static void edge_set_termios(struct tty_struct *tty, 222 struct usb_serial_port *port, 223 const struct ktermios *old_termios); 224 static void edge_send(struct usb_serial_port *port, struct tty_struct *tty); 225 226 static int do_download_mode(struct edgeport_serial *serial, 227 const struct firmware *fw); 228 static int do_boot_mode(struct edgeport_serial *serial, 229 const struct firmware *fw); 230 231 /* sysfs attributes */ 232 static int edge_create_sysfs_attrs(struct usb_serial_port *port); 233 static int edge_remove_sysfs_attrs(struct usb_serial_port *port); 234 235 /* 236 * Some release of Edgeport firmware "down3.bin" after version 4.80 237 * introduced code to automatically disconnect idle devices on some 238 * Edgeport models after periods of inactivity, typically ~60 seconds. 239 * This occurs without regard to whether ports on the device are open 240 * or not. Digi International Tech Support suggested: 241 * 242 * 1. Adding driver "heartbeat" code to reset the firmware timer by 243 * requesting a descriptor record every 15 seconds, which should be 244 * effective with newer firmware versions that require it, and benign 245 * with older versions that do not. In practice 40 seconds seems often 246 * enough. 247 * 2. The heartbeat code is currently required only on Edgeport/416 models. 248 */ 249 #define FW_HEARTBEAT_VERSION_CUTOFF ((4 << 8) + 80) 250 #define FW_HEARTBEAT_SECS 40 251 252 /* Timeouts in msecs: firmware downloads take longer */ 253 #define TI_VSEND_TIMEOUT_DEFAULT 1000 254 #define TI_VSEND_TIMEOUT_FW_DOWNLOAD 10000 255 256 static int ti_vread_sync(struct usb_device *dev, u8 request, u16 value, 257 u16 index, void *data, int size) 258 { 259 int status; 260 261 status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request, 262 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN), 263 value, index, data, size, 1000); 264 if (status < 0) 265 return status; 266 if (status != size) { 267 dev_dbg(&dev->dev, "%s - wanted to read %d, but only read %d\n", 268 __func__, size, status); 269 return -ECOMM; 270 } 271 return 0; 272 } 273 274 static int ti_vsend_sync(struct usb_device *dev, u8 request, u16 value, 275 u16 index, void *data, int size, int timeout) 276 { 277 int status; 278 279 status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request, 280 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT), 281 value, index, data, size, timeout); 282 if (status < 0) 283 return status; 284 285 return 0; 286 } 287 288 static int read_port_cmd(struct usb_serial_port *port, u8 command, u16 value, 289 void *data, int size) 290 { 291 return ti_vread_sync(port->serial->dev, command, value, 292 UMPM_UART1_PORT + port->port_number, 293 data, size); 294 } 295 296 static int send_port_cmd(struct usb_serial_port *port, u8 command, u16 value, 297 void *data, int size) 298 { 299 return ti_vsend_sync(port->serial->dev, command, value, 300 UMPM_UART1_PORT + port->port_number, 301 data, size, TI_VSEND_TIMEOUT_DEFAULT); 302 } 303 304 /* clear tx/rx buffers and fifo in TI UMP */ 305 static int purge_port(struct usb_serial_port *port, u16 mask) 306 { 307 int port_number = port->port_number; 308 309 dev_dbg(&port->dev, "%s - port %d, mask %x\n", __func__, port_number, mask); 310 311 return send_port_cmd(port, UMPC_PURGE_PORT, mask, NULL, 0); 312 } 313 314 /** 315 * read_download_mem - Read edgeport memory from TI chip 316 * @dev: usb device pointer 317 * @start_address: Device CPU address at which to read 318 * @length: Length of above data 319 * @address_type: Can read both XDATA and I2C 320 * @buffer: pointer to input data buffer 321 */ 322 static int read_download_mem(struct usb_device *dev, int start_address, 323 int length, u8 address_type, u8 *buffer) 324 { 325 int status = 0; 326 u8 read_length; 327 u16 be_start_address; 328 329 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, length); 330 331 /* 332 * Read in blocks of 64 bytes 333 * (TI firmware can't handle more than 64 byte reads) 334 */ 335 while (length) { 336 if (length > 64) 337 read_length = 64; 338 else 339 read_length = (u8)length; 340 341 if (read_length > 1) { 342 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, read_length); 343 } 344 /* 345 * NOTE: Must use swab as wIndex is sent in little-endian 346 * byte order regardless of host byte order. 347 */ 348 be_start_address = swab16((u16)start_address); 349 status = ti_vread_sync(dev, UMPC_MEMORY_READ, 350 (u16)address_type, 351 be_start_address, 352 buffer, read_length); 353 354 if (status) { 355 dev_dbg(&dev->dev, "%s - ERROR %x\n", __func__, status); 356 return status; 357 } 358 359 if (read_length > 1) 360 usb_serial_debug_data(&dev->dev, __func__, read_length, buffer); 361 362 /* Update pointers/length */ 363 start_address += read_length; 364 buffer += read_length; 365 length -= read_length; 366 } 367 368 return status; 369 } 370 371 static int read_ram(struct usb_device *dev, int start_address, 372 int length, u8 *buffer) 373 { 374 return read_download_mem(dev, start_address, length, 375 DTK_ADDR_SPACE_XDATA, buffer); 376 } 377 378 /* Read edgeport memory to a given block */ 379 static int read_boot_mem(struct edgeport_serial *serial, 380 int start_address, int length, u8 *buffer) 381 { 382 int status = 0; 383 int i; 384 385 for (i = 0; i < length; i++) { 386 status = ti_vread_sync(serial->serial->dev, 387 UMPC_MEMORY_READ, serial->TI_I2C_Type, 388 (u16)(start_address+i), &buffer[i], 0x01); 389 if (status) { 390 dev_dbg(&serial->serial->dev->dev, "%s - ERROR %x\n", __func__, status); 391 return status; 392 } 393 } 394 395 dev_dbg(&serial->serial->dev->dev, "%s - start_address = %x, length = %d\n", 396 __func__, start_address, length); 397 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer); 398 399 serial->TiReadI2C = 1; 400 401 return status; 402 } 403 404 /* Write given block to TI EPROM memory */ 405 static int write_boot_mem(struct edgeport_serial *serial, 406 int start_address, int length, u8 *buffer) 407 { 408 int status = 0; 409 int i; 410 u8 *temp; 411 412 /* Must do a read before write */ 413 if (!serial->TiReadI2C) { 414 temp = kmalloc(1, GFP_KERNEL); 415 if (!temp) 416 return -ENOMEM; 417 418 status = read_boot_mem(serial, 0, 1, temp); 419 kfree(temp); 420 if (status) 421 return status; 422 } 423 424 for (i = 0; i < length; ++i) { 425 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE, 426 buffer[i], (u16)(i + start_address), NULL, 427 0, TI_VSEND_TIMEOUT_DEFAULT); 428 if (status) 429 return status; 430 } 431 432 dev_dbg(&serial->serial->dev->dev, "%s - start_sddr = %x, length = %d\n", __func__, start_address, length); 433 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer); 434 435 return status; 436 } 437 438 /* Write edgeport I2C memory to TI chip */ 439 static int write_i2c_mem(struct edgeport_serial *serial, 440 int start_address, int length, u8 address_type, u8 *buffer) 441 { 442 struct device *dev = &serial->serial->dev->dev; 443 int status = 0; 444 int write_length; 445 u16 be_start_address; 446 447 /* We can only send a maximum of 1 aligned byte page at a time */ 448 449 /* calculate the number of bytes left in the first page */ 450 write_length = EPROM_PAGE_SIZE - 451 (start_address & (EPROM_PAGE_SIZE - 1)); 452 453 if (write_length > length) 454 write_length = length; 455 456 dev_dbg(dev, "%s - BytesInFirstPage Addr = %x, length = %d\n", 457 __func__, start_address, write_length); 458 usb_serial_debug_data(dev, __func__, write_length, buffer); 459 460 /* 461 * Write first page. 462 * 463 * NOTE: Must use swab as wIndex is sent in little-endian byte order 464 * regardless of host byte order. 465 */ 466 be_start_address = swab16((u16)start_address); 467 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE, 468 (u16)address_type, be_start_address, 469 buffer, write_length, TI_VSEND_TIMEOUT_DEFAULT); 470 if (status) { 471 dev_dbg(dev, "%s - ERROR %d\n", __func__, status); 472 return status; 473 } 474 475 length -= write_length; 476 start_address += write_length; 477 buffer += write_length; 478 479 /* 480 * We should be aligned now -- can write max page size bytes at a 481 * time. 482 */ 483 while (length) { 484 if (length > EPROM_PAGE_SIZE) 485 write_length = EPROM_PAGE_SIZE; 486 else 487 write_length = length; 488 489 dev_dbg(dev, "%s - Page Write Addr = %x, length = %d\n", 490 __func__, start_address, write_length); 491 usb_serial_debug_data(dev, __func__, write_length, buffer); 492 493 /* 494 * Write next page. 495 * 496 * NOTE: Must use swab as wIndex is sent in little-endian byte 497 * order regardless of host byte order. 498 */ 499 be_start_address = swab16((u16)start_address); 500 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE, 501 (u16)address_type, be_start_address, buffer, 502 write_length, TI_VSEND_TIMEOUT_DEFAULT); 503 if (status) { 504 dev_err(dev, "%s - ERROR %d\n", __func__, status); 505 return status; 506 } 507 508 length -= write_length; 509 start_address += write_length; 510 buffer += write_length; 511 } 512 return status; 513 } 514 515 /* 516 * Examine the UMP DMA registers and LSR 517 * 518 * Check the MSBit of the X and Y DMA byte count registers. 519 * A zero in this bit indicates that the TX DMA buffers are empty 520 * then check the TX Empty bit in the UART. 521 */ 522 static int tx_active(struct edgeport_port *port) 523 { 524 int status; 525 struct out_endpoint_desc_block *oedb; 526 u8 *lsr; 527 int bytes_left = 0; 528 529 oedb = kmalloc_obj(*oedb); 530 if (!oedb) 531 return -ENOMEM; 532 533 /* 534 * Sigh, that's right, just one byte, as not all platforms can 535 * do DMA from stack 536 */ 537 lsr = kmalloc(1, GFP_KERNEL); 538 if (!lsr) { 539 kfree(oedb); 540 return -ENOMEM; 541 } 542 /* Read the DMA Count Registers */ 543 status = read_ram(port->port->serial->dev, port->dma_address, 544 sizeof(*oedb), (void *)oedb); 545 if (status) 546 goto exit_is_tx_active; 547 548 dev_dbg(&port->port->dev, "%s - XByteCount 0x%X\n", __func__, oedb->XByteCount); 549 550 /* and the LSR */ 551 status = read_ram(port->port->serial->dev, 552 port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr); 553 554 if (status) 555 goto exit_is_tx_active; 556 dev_dbg(&port->port->dev, "%s - LSR = 0x%X\n", __func__, *lsr); 557 558 /* If either buffer has data or we are transmitting then return TRUE */ 559 if ((oedb->XByteCount & 0x80) != 0) 560 bytes_left += 64; 561 562 if ((*lsr & UMP_UART_LSR_TX_MASK) == 0) 563 bytes_left += 1; 564 565 /* We return Not Active if we get any kind of error */ 566 exit_is_tx_active: 567 dev_dbg(&port->port->dev, "%s - return %d\n", __func__, bytes_left); 568 569 kfree(lsr); 570 kfree(oedb); 571 return bytes_left; 572 } 573 574 static int choose_config(struct usb_device *dev) 575 { 576 /* 577 * There may be multiple configurations on this device, in which case 578 * we would need to read and parse all of them to find out which one 579 * we want. However, we just support one config at this point, 580 * configuration # 1, which is Config Descriptor 0. 581 */ 582 583 dev_dbg(&dev->dev, "%s - Number of Interfaces = %d\n", 584 __func__, dev->config->desc.bNumInterfaces); 585 dev_dbg(&dev->dev, "%s - MAX Power = %d\n", 586 __func__, dev->config->desc.bMaxPower * 2); 587 588 if (dev->config->desc.bNumInterfaces != 1) { 589 dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", __func__); 590 return -ENODEV; 591 } 592 593 return 0; 594 } 595 596 static int read_rom(struct edgeport_serial *serial, 597 int start_address, int length, u8 *buffer) 598 { 599 int status; 600 601 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { 602 status = read_download_mem(serial->serial->dev, 603 start_address, 604 length, 605 serial->TI_I2C_Type, 606 buffer); 607 } else { 608 status = read_boot_mem(serial, start_address, length, 609 buffer); 610 } 611 return status; 612 } 613 614 static int write_rom(struct edgeport_serial *serial, int start_address, 615 int length, u8 *buffer) 616 { 617 if (serial->product_info.TiMode == TI_MODE_BOOT) 618 return write_boot_mem(serial, start_address, length, 619 buffer); 620 621 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) 622 return write_i2c_mem(serial, start_address, length, 623 serial->TI_I2C_Type, buffer); 624 return -EINVAL; 625 } 626 627 /* Read a descriptor header from I2C based on type */ 628 static int get_descriptor_addr(struct edgeport_serial *serial, 629 int desc_type, struct ti_i2c_desc *rom_desc) 630 { 631 int start_address; 632 int status; 633 634 /* Search for requested descriptor in I2C */ 635 start_address = 2; 636 do { 637 status = read_rom(serial, 638 start_address, 639 sizeof(struct ti_i2c_desc), 640 (u8 *)rom_desc); 641 if (status) 642 return 0; 643 644 if (rom_desc->Type == desc_type) 645 return start_address; 646 647 start_address = start_address + sizeof(struct ti_i2c_desc) + 648 le16_to_cpu(rom_desc->Size); 649 650 } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type); 651 652 return 0; 653 } 654 655 /* Validate descriptor checksum */ 656 static int valid_csum(struct ti_i2c_desc *rom_desc, u8 *buffer) 657 { 658 u16 i; 659 u8 cs = 0; 660 661 for (i = 0; i < le16_to_cpu(rom_desc->Size); i++) 662 cs = (u8)(cs + buffer[i]); 663 664 if (cs != rom_desc->CheckSum) { 665 pr_debug("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs); 666 return -EINVAL; 667 } 668 return 0; 669 } 670 671 /* Make sure that the I2C image is good */ 672 static int check_i2c_image(struct edgeport_serial *serial) 673 { 674 struct device *dev = &serial->serial->dev->dev; 675 int status = 0; 676 struct ti_i2c_desc *rom_desc; 677 int start_address = 2; 678 u8 *buffer; 679 u16 ttype; 680 681 rom_desc = kmalloc_obj(*rom_desc); 682 if (!rom_desc) 683 return -ENOMEM; 684 685 buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL); 686 if (!buffer) { 687 kfree(rom_desc); 688 return -ENOMEM; 689 } 690 691 /* Read the first byte (Signature0) must be 0x52 or 0x10 */ 692 status = read_rom(serial, 0, 1, buffer); 693 if (status) 694 goto out; 695 696 if (*buffer != UMP5152 && *buffer != UMP3410) { 697 dev_err(dev, "%s - invalid buffer signature\n", __func__); 698 status = -ENODEV; 699 goto out; 700 } 701 702 do { 703 /* Validate the I2C */ 704 status = read_rom(serial, 705 start_address, 706 sizeof(struct ti_i2c_desc), 707 (u8 *)rom_desc); 708 if (status) 709 break; 710 711 if ((start_address + sizeof(struct ti_i2c_desc) + 712 le16_to_cpu(rom_desc->Size)) > TI_MAX_I2C_SIZE) { 713 status = -ENODEV; 714 dev_dbg(dev, "%s - structure too big, erroring out.\n", __func__); 715 break; 716 } 717 718 dev_dbg(dev, "%s Type = 0x%x\n", __func__, rom_desc->Type); 719 720 /* Skip type 2 record */ 721 ttype = rom_desc->Type & 0x0f; 722 if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC 723 && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) { 724 /* Read the descriptor data */ 725 status = read_rom(serial, start_address + 726 sizeof(struct ti_i2c_desc), 727 le16_to_cpu(rom_desc->Size), 728 buffer); 729 if (status) 730 break; 731 732 status = valid_csum(rom_desc, buffer); 733 if (status) 734 break; 735 } 736 start_address = start_address + sizeof(struct ti_i2c_desc) + 737 le16_to_cpu(rom_desc->Size); 738 739 } while ((rom_desc->Type != I2C_DESC_TYPE_ION) && 740 (start_address < TI_MAX_I2C_SIZE)); 741 742 if ((rom_desc->Type != I2C_DESC_TYPE_ION) || 743 (start_address > TI_MAX_I2C_SIZE)) 744 status = -ENODEV; 745 746 out: 747 kfree(buffer); 748 kfree(rom_desc); 749 return status; 750 } 751 752 static int get_manuf_info(struct edgeport_serial *serial, u8 *buffer) 753 { 754 int status; 755 int start_address; 756 struct ti_i2c_desc *rom_desc; 757 struct edge_ti_manuf_descriptor *desc; 758 struct device *dev = &serial->serial->dev->dev; 759 760 rom_desc = kmalloc_obj(*rom_desc); 761 if (!rom_desc) 762 return -ENOMEM; 763 764 start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION, 765 rom_desc); 766 767 if (!start_address) { 768 dev_dbg(dev, "%s - Edge Descriptor not found in I2C\n", __func__); 769 status = -ENODEV; 770 goto exit; 771 } 772 773 /* Read the descriptor data */ 774 if (le16_to_cpu(rom_desc->Size) != sizeof(struct edge_ti_manuf_descriptor)) { 775 dev_err(dev, "unexpected Edge descriptor length: %u\n", 776 le16_to_cpu(rom_desc->Size)); 777 status = -EINVAL; 778 goto exit; 779 } 780 status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc), 781 le16_to_cpu(rom_desc->Size), buffer); 782 if (status) 783 goto exit; 784 785 status = valid_csum(rom_desc, buffer); 786 787 desc = (struct edge_ti_manuf_descriptor *)buffer; 788 dev_dbg(dev, "%s - IonConfig 0x%x\n", __func__, desc->IonConfig); 789 dev_dbg(dev, "%s - Version %d\n", __func__, desc->Version); 790 dev_dbg(dev, "%s - Cpu/Board 0x%x\n", __func__, desc->CpuRev_BoardRev); 791 dev_dbg(dev, "%s - NumPorts %d\n", __func__, desc->NumPorts); 792 dev_dbg(dev, "%s - NumVirtualPorts %d\n", __func__, desc->NumVirtualPorts); 793 dev_dbg(dev, "%s - TotalPorts %d\n", __func__, desc->TotalPorts); 794 795 exit: 796 kfree(rom_desc); 797 return status; 798 } 799 800 /* Build firmware header used for firmware update */ 801 static int build_i2c_fw_hdr(u8 *header, const struct firmware *fw) 802 { 803 u8 *buffer; 804 int buffer_size; 805 int i; 806 u8 cs = 0; 807 struct ti_i2c_desc *i2c_header; 808 struct ti_i2c_image_header *img_header; 809 struct ti_i2c_firmware_rec *firmware_rec; 810 struct edgeport_fw_hdr *fw_hdr = (struct edgeport_fw_hdr *)fw->data; 811 812 /* 813 * In order to update the I2C firmware we must change the type 2 record 814 * to type 0xF2. This will force the UMP to come up in Boot Mode. 815 * Then while in boot mode, the driver will download the latest 816 * firmware (padded to 15.5k) into the UMP ram. And finally when the 817 * device comes back up in download mode the driver will cause the new 818 * firmware to be copied from the UMP Ram to I2C and the firmware will 819 * update the record type from 0xf2 to 0x02. 820 */ 821 822 /* 823 * Allocate a 15.5k buffer + 2 bytes for version number (Firmware 824 * Record) 825 */ 826 buffer_size = (((1024 * 16) - 512 ) + 827 sizeof(struct ti_i2c_firmware_rec)); 828 829 buffer = kmalloc(buffer_size, GFP_KERNEL); 830 if (!buffer) 831 return -ENOMEM; 832 833 /* Set entire image of 0xffs */ 834 memset(buffer, 0xff, buffer_size); 835 836 /* Copy version number into firmware record */ 837 firmware_rec = (struct ti_i2c_firmware_rec *)buffer; 838 839 firmware_rec->Ver_Major = fw_hdr->major_version; 840 firmware_rec->Ver_Minor = fw_hdr->minor_version; 841 842 /* Pointer to fw_down memory image */ 843 img_header = (struct ti_i2c_image_header *)&fw->data[4]; 844 845 if (le16_to_cpu(img_header->Length) > 846 buffer_size - sizeof(struct ti_i2c_firmware_rec)) { 847 kfree(buffer); 848 return -EINVAL; 849 } 850 memcpy(buffer + sizeof(struct ti_i2c_firmware_rec), 851 &fw->data[4 + sizeof(struct ti_i2c_image_header)], 852 le16_to_cpu(img_header->Length)); 853 854 for (i=0; i < buffer_size; i++) { 855 cs = (u8)(cs + buffer[i]); 856 } 857 858 kfree(buffer); 859 860 /* Build new header */ 861 i2c_header = (struct ti_i2c_desc *)header; 862 firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data; 863 864 i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK; 865 i2c_header->Size = cpu_to_le16(buffer_size); 866 i2c_header->CheckSum = cs; 867 firmware_rec->Ver_Major = fw_hdr->major_version; 868 firmware_rec->Ver_Minor = fw_hdr->minor_version; 869 870 return 0; 871 } 872 873 /* Try to figure out what type of I2c we have */ 874 static int i2c_type_bootmode(struct edgeport_serial *serial) 875 { 876 struct device *dev = &serial->serial->dev->dev; 877 int status; 878 u8 *data; 879 880 data = kmalloc(1, GFP_KERNEL); 881 if (!data) 882 return -ENOMEM; 883 884 /* Try to read type 2 */ 885 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, 886 DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01); 887 if (status) 888 dev_dbg(dev, "%s - read 2 status error = %d\n", __func__, status); 889 else 890 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data); 891 if ((!status) && (*data == UMP5152 || *data == UMP3410)) { 892 dev_dbg(dev, "%s - ROM_TYPE_II\n", __func__); 893 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 894 goto out; 895 } 896 897 /* Try to read type 3 */ 898 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, 899 DTK_ADDR_SPACE_I2C_TYPE_III, 0, data, 0x01); 900 if (status) 901 dev_dbg(dev, "%s - read 3 status error = %d\n", __func__, status); 902 else 903 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data); 904 if ((!status) && (*data == UMP5152 || *data == UMP3410)) { 905 dev_dbg(dev, "%s - ROM_TYPE_III\n", __func__); 906 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III; 907 goto out; 908 } 909 910 dev_dbg(dev, "%s - Unknown\n", __func__); 911 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 912 status = -ENODEV; 913 out: 914 kfree(data); 915 return status; 916 } 917 918 static int bulk_xfer(struct usb_serial *serial, void *buffer, 919 int length, int *num_sent) 920 { 921 int status; 922 923 status = usb_bulk_msg(serial->dev, 924 usb_sndbulkpipe(serial->dev, 925 serial->port[0]->bulk_out_endpointAddress), 926 buffer, length, num_sent, 1000); 927 return status; 928 } 929 930 /* Download given firmware image to the device (IN BOOT MODE) */ 931 static int download_code(struct edgeport_serial *serial, u8 *image, 932 int image_length) 933 { 934 int status = 0; 935 int pos; 936 int transfer; 937 int done; 938 939 /* Transfer firmware image */ 940 for (pos = 0; pos < image_length; ) { 941 /* Read the next buffer from file */ 942 transfer = image_length - pos; 943 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE) 944 transfer = EDGE_FW_BULK_MAX_PACKET_SIZE; 945 946 /* Transfer data */ 947 status = bulk_xfer(serial->serial, &image[pos], 948 transfer, &done); 949 if (status) 950 break; 951 /* Advance buffer pointer */ 952 pos += done; 953 } 954 955 return status; 956 } 957 958 /* FIXME!!! */ 959 static int config_boot_dev(struct usb_device *dev) 960 { 961 return 0; 962 } 963 964 static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc) 965 { 966 return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev); 967 } 968 969 static int check_fw_sanity(struct edgeport_serial *serial, 970 const struct firmware *fw) 971 { 972 u16 length_total; 973 u8 checksum = 0; 974 int pos; 975 struct device *dev = &serial->serial->interface->dev; 976 struct edgeport_fw_hdr *fw_hdr = (struct edgeport_fw_hdr *)fw->data; 977 978 if (fw->size < sizeof(struct edgeport_fw_hdr)) { 979 dev_err(dev, "incomplete fw header\n"); 980 return -EINVAL; 981 } 982 983 length_total = le16_to_cpu(fw_hdr->length) + 984 sizeof(struct edgeport_fw_hdr); 985 986 if (fw->size != length_total) { 987 dev_err(dev, "bad fw size (expected: %u, got: %zu)\n", 988 length_total, fw->size); 989 return -EINVAL; 990 } 991 992 for (pos = sizeof(struct edgeport_fw_hdr); pos < fw->size; ++pos) 993 checksum += fw->data[pos]; 994 995 if (checksum != fw_hdr->checksum) { 996 dev_err(dev, "bad fw checksum (expected: 0x%x, got: 0x%x)\n", 997 fw_hdr->checksum, checksum); 998 return -EINVAL; 999 } 1000 1001 return 0; 1002 } 1003 1004 /* 1005 * DownloadTIFirmware - Download run-time operating firmware to the TI5052 1006 * 1007 * This routine downloads the main operating code into the TI5052, using the 1008 * boot code already burned into E2PROM or ROM. 1009 */ 1010 static int download_fw(struct edgeport_serial *serial) 1011 { 1012 struct device *dev = &serial->serial->interface->dev; 1013 int status = 0; 1014 struct usb_interface_descriptor *interface; 1015 const struct firmware *fw; 1016 const char *fw_name = "edgeport/down3.bin"; 1017 struct edgeport_fw_hdr *fw_hdr; 1018 1019 status = request_firmware(&fw, fw_name, dev); 1020 if (status) { 1021 dev_err(dev, "Failed to load image \"%s\" err %d\n", 1022 fw_name, status); 1023 return status; 1024 } 1025 1026 if (check_fw_sanity(serial, fw)) { 1027 status = -EINVAL; 1028 goto out; 1029 } 1030 1031 fw_hdr = (struct edgeport_fw_hdr *)fw->data; 1032 1033 /* If on-board version is newer, "fw_version" will be updated later. */ 1034 serial->fw_version = (fw_hdr->major_version << 8) + 1035 fw_hdr->minor_version; 1036 1037 /* 1038 * This routine is entered by both the BOOT mode and the Download mode 1039 * We can determine which code is running by the reading the config 1040 * descriptor and if we have only one bulk pipe it is in boot mode 1041 */ 1042 serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP; 1043 1044 /* Default to type 2 i2c */ 1045 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 1046 1047 status = choose_config(serial->serial->dev); 1048 if (status) 1049 goto out; 1050 1051 interface = &serial->serial->interface->cur_altsetting->desc; 1052 if (!interface) { 1053 dev_err(dev, "%s - no interface set, error!\n", __func__); 1054 status = -ENODEV; 1055 goto out; 1056 } 1057 1058 /* 1059 * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING 1060 * if we have more than one endpoint we are definitely in download 1061 * mode 1062 */ 1063 if (interface->bNumEndpoints > 1) { 1064 serial->product_info.TiMode = TI_MODE_DOWNLOAD; 1065 status = do_download_mode(serial, fw); 1066 } else { 1067 /* Otherwise we will remain in configuring mode */ 1068 serial->product_info.TiMode = TI_MODE_CONFIGURING; 1069 status = do_boot_mode(serial, fw); 1070 } 1071 1072 out: 1073 release_firmware(fw); 1074 return status; 1075 } 1076 1077 static int do_download_mode(struct edgeport_serial *serial, 1078 const struct firmware *fw) 1079 { 1080 struct device *dev = &serial->serial->interface->dev; 1081 int status = 0; 1082 int start_address; 1083 struct edge_ti_manuf_descriptor *ti_manuf_desc; 1084 int download_cur_ver; 1085 int download_new_ver; 1086 struct edgeport_fw_hdr *fw_hdr = (struct edgeport_fw_hdr *)fw->data; 1087 struct ti_i2c_desc *rom_desc; 1088 1089 dev_dbg(dev, "%s - RUNNING IN DOWNLOAD MODE\n", __func__); 1090 1091 status = check_i2c_image(serial); 1092 if (status) { 1093 dev_dbg(dev, "%s - DOWNLOAD MODE -- BAD I2C\n", __func__); 1094 return status; 1095 } 1096 1097 /* 1098 * Validate Hardware version number 1099 * Read Manufacturing Descriptor from TI Based Edgeport 1100 */ 1101 ti_manuf_desc = kmalloc_obj(*ti_manuf_desc); 1102 if (!ti_manuf_desc) 1103 return -ENOMEM; 1104 1105 status = get_manuf_info(serial, (u8 *)ti_manuf_desc); 1106 if (status) { 1107 kfree(ti_manuf_desc); 1108 return status; 1109 } 1110 1111 /* Check version number of ION descriptor */ 1112 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { 1113 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n", 1114 __func__, ti_cpu_rev(ti_manuf_desc)); 1115 kfree(ti_manuf_desc); 1116 return -EINVAL; 1117 } 1118 1119 rom_desc = kmalloc_obj(*rom_desc); 1120 if (!rom_desc) { 1121 kfree(ti_manuf_desc); 1122 return -ENOMEM; 1123 } 1124 1125 /* Search for type 2 record (firmware record) */ 1126 start_address = get_descriptor_addr(serial, 1127 I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc); 1128 if (start_address != 0) { 1129 struct ti_i2c_firmware_rec *firmware_version; 1130 u8 *record; 1131 1132 dev_dbg(dev, "%s - Found Type FIRMWARE (Type 2) record\n", 1133 __func__); 1134 1135 firmware_version = kmalloc_obj(*firmware_version); 1136 if (!firmware_version) { 1137 kfree(rom_desc); 1138 kfree(ti_manuf_desc); 1139 return -ENOMEM; 1140 } 1141 1142 /* 1143 * Validate version number 1144 * Read the descriptor data 1145 */ 1146 status = read_rom(serial, start_address + 1147 sizeof(struct ti_i2c_desc), 1148 sizeof(struct ti_i2c_firmware_rec), 1149 (u8 *)firmware_version); 1150 if (status) { 1151 kfree(firmware_version); 1152 kfree(rom_desc); 1153 kfree(ti_manuf_desc); 1154 return status; 1155 } 1156 1157 /* 1158 * Check version number of download with current 1159 * version in I2c 1160 */ 1161 download_cur_ver = (firmware_version->Ver_Major << 8) + 1162 (firmware_version->Ver_Minor); 1163 download_new_ver = (fw_hdr->major_version << 8) + 1164 (fw_hdr->minor_version); 1165 1166 dev_dbg(dev, "%s - >> FW Versions Device %d.%d Driver %d.%d\n", 1167 __func__, firmware_version->Ver_Major, 1168 firmware_version->Ver_Minor, 1169 fw_hdr->major_version, fw_hdr->minor_version); 1170 1171 /* 1172 * Check if we have an old version in the I2C and 1173 * update if necessary 1174 */ 1175 if (download_cur_ver < download_new_ver) { 1176 dev_dbg(dev, "%s - Update I2C dld from %d.%d to %d.%d\n", 1177 __func__, 1178 firmware_version->Ver_Major, 1179 firmware_version->Ver_Minor, 1180 fw_hdr->major_version, 1181 fw_hdr->minor_version); 1182 1183 record = kmalloc(1, GFP_KERNEL); 1184 if (!record) { 1185 kfree(firmware_version); 1186 kfree(rom_desc); 1187 kfree(ti_manuf_desc); 1188 return -ENOMEM; 1189 } 1190 /* 1191 * In order to update the I2C firmware we must 1192 * change the type 2 record to type 0xF2. This 1193 * will force the UMP to come up in Boot Mode. 1194 * Then while in boot mode, the driver will 1195 * download the latest firmware (padded to 1196 * 15.5k) into the UMP ram. Finally when the 1197 * device comes back up in download mode the 1198 * driver will cause the new firmware to be 1199 * copied from the UMP Ram to I2C and the 1200 * firmware will update the record type from 1201 * 0xf2 to 0x02. 1202 */ 1203 *record = I2C_DESC_TYPE_FIRMWARE_BLANK; 1204 1205 /* 1206 * Change the I2C Firmware record type to 1207 * 0xf2 to trigger an update 1208 */ 1209 status = write_rom(serial, start_address, 1210 sizeof(*record), record); 1211 if (status) { 1212 kfree(record); 1213 kfree(firmware_version); 1214 kfree(rom_desc); 1215 kfree(ti_manuf_desc); 1216 return status; 1217 } 1218 1219 /* 1220 * verify the write -- must do this in order 1221 * for write to complete before we do the 1222 * hardware reset 1223 */ 1224 status = read_rom(serial, 1225 start_address, 1226 sizeof(*record), 1227 record); 1228 if (status) { 1229 kfree(record); 1230 kfree(firmware_version); 1231 kfree(rom_desc); 1232 kfree(ti_manuf_desc); 1233 return status; 1234 } 1235 1236 if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) { 1237 dev_err(dev, "%s - error resetting device\n", 1238 __func__); 1239 kfree(record); 1240 kfree(firmware_version); 1241 kfree(rom_desc); 1242 kfree(ti_manuf_desc); 1243 return -ENODEV; 1244 } 1245 1246 dev_dbg(dev, "%s - HARDWARE RESET\n", __func__); 1247 1248 /* Reset UMP -- Back to BOOT MODE */ 1249 status = ti_vsend_sync(serial->serial->dev, 1250 UMPC_HARDWARE_RESET, 1251 0, 0, NULL, 0, 1252 TI_VSEND_TIMEOUT_DEFAULT); 1253 1254 dev_dbg(dev, "%s - HARDWARE RESET return %d\n", 1255 __func__, status); 1256 1257 /* return an error on purpose. */ 1258 kfree(record); 1259 kfree(firmware_version); 1260 kfree(rom_desc); 1261 kfree(ti_manuf_desc); 1262 return -ENODEV; 1263 } 1264 /* Same or newer fw version is already loaded */ 1265 serial->fw_version = download_cur_ver; 1266 kfree(firmware_version); 1267 } 1268 /* Search for type 0xF2 record (firmware blank record) */ 1269 else { 1270 start_address = get_descriptor_addr(serial, 1271 I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc); 1272 if (start_address != 0) { 1273 #define HEADER_SIZE (sizeof(struct ti_i2c_desc) + \ 1274 sizeof(struct ti_i2c_firmware_rec)) 1275 u8 *header; 1276 u8 *vheader; 1277 1278 header = kmalloc(HEADER_SIZE, GFP_KERNEL); 1279 if (!header) { 1280 kfree(rom_desc); 1281 kfree(ti_manuf_desc); 1282 return -ENOMEM; 1283 } 1284 1285 vheader = kmalloc(HEADER_SIZE, GFP_KERNEL); 1286 if (!vheader) { 1287 kfree(header); 1288 kfree(rom_desc); 1289 kfree(ti_manuf_desc); 1290 return -ENOMEM; 1291 } 1292 1293 dev_dbg(dev, "%s - Found Type BLANK FIRMWARE (Type F2) record\n", 1294 __func__); 1295 1296 /* 1297 * In order to update the I2C firmware we must change 1298 * the type 2 record to type 0xF2. This will force the 1299 * UMP to come up in Boot Mode. Then while in boot 1300 * mode, the driver will download the latest firmware 1301 * (padded to 15.5k) into the UMP ram. Finally when the 1302 * device comes back up in download mode the driver 1303 * will cause the new firmware to be copied from the 1304 * UMP Ram to I2C and the firmware will update the 1305 * record type from 0xf2 to 0x02. 1306 */ 1307 status = build_i2c_fw_hdr(header, fw); 1308 if (status) { 1309 kfree(vheader); 1310 kfree(header); 1311 kfree(rom_desc); 1312 kfree(ti_manuf_desc); 1313 return -EINVAL; 1314 } 1315 1316 /* 1317 * Update I2C with type 0xf2 record with correct 1318 * size and checksum 1319 */ 1320 status = write_rom(serial, 1321 start_address, 1322 HEADER_SIZE, 1323 header); 1324 if (status) { 1325 kfree(vheader); 1326 kfree(header); 1327 kfree(rom_desc); 1328 kfree(ti_manuf_desc); 1329 return -EINVAL; 1330 } 1331 1332 /* 1333 * verify the write -- must do this in order for 1334 * write to complete before we do the hardware reset 1335 */ 1336 status = read_rom(serial, start_address, 1337 HEADER_SIZE, vheader); 1338 1339 if (status) { 1340 dev_dbg(dev, "%s - can't read header back\n", 1341 __func__); 1342 kfree(vheader); 1343 kfree(header); 1344 kfree(rom_desc); 1345 kfree(ti_manuf_desc); 1346 return status; 1347 } 1348 if (memcmp(vheader, header, HEADER_SIZE)) { 1349 dev_dbg(dev, "%s - write download record failed\n", 1350 __func__); 1351 kfree(vheader); 1352 kfree(header); 1353 kfree(rom_desc); 1354 kfree(ti_manuf_desc); 1355 return -EINVAL; 1356 } 1357 1358 kfree(vheader); 1359 kfree(header); 1360 1361 dev_dbg(dev, "%s - Start firmware update\n", __func__); 1362 1363 /* Tell firmware to copy download image into I2C */ 1364 status = ti_vsend_sync(serial->serial->dev, 1365 UMPC_COPY_DNLD_TO_I2C, 1366 0, 0, NULL, 0, 1367 TI_VSEND_TIMEOUT_FW_DOWNLOAD); 1368 1369 dev_dbg(dev, "%s - Update complete 0x%x\n", __func__, 1370 status); 1371 if (status) { 1372 dev_err(dev, 1373 "%s - UMPC_COPY_DNLD_TO_I2C failed\n", 1374 __func__); 1375 kfree(rom_desc); 1376 kfree(ti_manuf_desc); 1377 return status; 1378 } 1379 } 1380 } 1381 1382 /* The device is running the download code */ 1383 kfree(rom_desc); 1384 kfree(ti_manuf_desc); 1385 return 0; 1386 } 1387 1388 static int do_boot_mode(struct edgeport_serial *serial, 1389 const struct firmware *fw) 1390 { 1391 struct device *dev = &serial->serial->interface->dev; 1392 int status = 0; 1393 struct edge_ti_manuf_descriptor *ti_manuf_desc; 1394 struct edgeport_fw_hdr *fw_hdr = (struct edgeport_fw_hdr *)fw->data; 1395 1396 dev_dbg(dev, "%s - RUNNING IN BOOT MODE\n", __func__); 1397 1398 /* Configure the TI device so we can use the BULK pipes for download */ 1399 status = config_boot_dev(serial->serial->dev); 1400 if (status) 1401 return status; 1402 1403 if (le16_to_cpu(serial->serial->dev->descriptor.idVendor) 1404 != USB_VENDOR_ID_ION) { 1405 dev_dbg(dev, "%s - VID = 0x%x\n", __func__, 1406 le16_to_cpu(serial->serial->dev->descriptor.idVendor)); 1407 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 1408 goto stayinbootmode; 1409 } 1410 1411 /* 1412 * We have an ION device (I2c Must be programmed) 1413 * Determine I2C image type 1414 */ 1415 if (i2c_type_bootmode(serial)) 1416 goto stayinbootmode; 1417 1418 /* Check for ION Vendor ID and that the I2C is valid */ 1419 if (!check_i2c_image(serial)) { 1420 struct ti_i2c_image_header *header; 1421 int i; 1422 u8 cs = 0; 1423 u8 *buffer; 1424 int buffer_size; 1425 1426 /* 1427 * Validate Hardware version number 1428 * Read Manufacturing Descriptor from TI Based Edgeport 1429 */ 1430 ti_manuf_desc = kmalloc_obj(*ti_manuf_desc); 1431 if (!ti_manuf_desc) 1432 return -ENOMEM; 1433 1434 status = get_manuf_info(serial, (u8 *)ti_manuf_desc); 1435 if (status) { 1436 kfree(ti_manuf_desc); 1437 goto stayinbootmode; 1438 } 1439 1440 /* Check for version 2 */ 1441 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { 1442 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n", 1443 __func__, ti_cpu_rev(ti_manuf_desc)); 1444 kfree(ti_manuf_desc); 1445 goto stayinbootmode; 1446 } 1447 1448 kfree(ti_manuf_desc); 1449 1450 /* 1451 * In order to update the I2C firmware we must change the type 1452 * 2 record to type 0xF2. This will force the UMP to come up 1453 * in Boot Mode. Then while in boot mode, the driver will 1454 * download the latest firmware (padded to 15.5k) into the 1455 * UMP ram. Finally when the device comes back up in download 1456 * mode the driver will cause the new firmware to be copied 1457 * from the UMP Ram to I2C and the firmware will update the 1458 * record type from 0xf2 to 0x02. 1459 * 1460 * Do we really have to copy the whole firmware image, 1461 * or could we do this in place! 1462 */ 1463 1464 /* Allocate a 15.5k buffer + 3 byte header */ 1465 buffer_size = (((1024 * 16) - 512) + 1466 sizeof(struct ti_i2c_image_header)); 1467 if (fw->size - 4 > buffer_size) { 1468 dev_err(dev, "%s - firmware image is too large\n", 1469 __func__); 1470 return -EINVAL; 1471 } 1472 1473 buffer = kmalloc(buffer_size, GFP_KERNEL); 1474 if (!buffer) 1475 return -ENOMEM; 1476 1477 /* Initialize the buffer to 0xff (pad the buffer) */ 1478 memset(buffer, 0xff, buffer_size); 1479 memcpy(buffer, &fw->data[4], fw->size - 4); 1480 1481 for (i = sizeof(struct ti_i2c_image_header); 1482 i < buffer_size; i++) { 1483 cs = (u8)(cs + buffer[i]); 1484 } 1485 1486 header = (struct ti_i2c_image_header *)buffer; 1487 1488 /* update length and checksum after padding */ 1489 header->Length = cpu_to_le16((u16)(buffer_size - 1490 sizeof(struct ti_i2c_image_header))); 1491 header->CheckSum = cs; 1492 1493 /* Download the operational code */ 1494 dev_dbg(dev, "%s - Downloading operational code image version %d.%d (TI UMP)\n", 1495 __func__, 1496 fw_hdr->major_version, fw_hdr->minor_version); 1497 status = download_code(serial, buffer, buffer_size); 1498 1499 kfree(buffer); 1500 1501 if (status) { 1502 dev_dbg(dev, "%s - Error downloading operational code image\n", __func__); 1503 return status; 1504 } 1505 1506 /* Device will reboot */ 1507 serial->product_info.TiMode = TI_MODE_TRANSITIONING; 1508 1509 dev_dbg(dev, "%s - Download successful -- Device rebooting...\n", __func__); 1510 1511 return 1; 1512 } 1513 1514 stayinbootmode: 1515 /* Eprom is invalid or blank stay in boot mode */ 1516 dev_dbg(dev, "%s - STAYING IN BOOT MODE\n", __func__); 1517 serial->product_info.TiMode = TI_MODE_BOOT; 1518 1519 return 1; 1520 } 1521 1522 static int ti_do_config(struct edgeport_port *port, int feature, int on) 1523 { 1524 on = !!on; /* 1 or 0 not bitmask */ 1525 1526 return send_port_cmd(port->port, feature, on, NULL, 0); 1527 } 1528 1529 static int restore_mcr(struct edgeport_port *port, u8 mcr) 1530 { 1531 int status = 0; 1532 1533 dev_dbg(&port->port->dev, "%s - %x\n", __func__, mcr); 1534 1535 status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR); 1536 if (status) 1537 return status; 1538 status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS); 1539 if (status) 1540 return status; 1541 return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK); 1542 } 1543 1544 /* Convert TI LSR to standard UART flags */ 1545 static u8 map_line_status(u8 ti_lsr) 1546 { 1547 u8 lsr = 0; 1548 1549 #define MAP_FLAG(flagUmp, flagUart) \ 1550 if (ti_lsr & flagUmp) \ 1551 lsr |= flagUart; 1552 1553 MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */ 1554 MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */ 1555 MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */ 1556 MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */ 1557 MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* rx data available */ 1558 MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* tx hold reg empty */ 1559 1560 #undef MAP_FLAG 1561 1562 return lsr; 1563 } 1564 1565 static void handle_new_msr(struct edgeport_port *edge_port, u8 msr) 1566 { 1567 struct async_icount *icount; 1568 struct tty_struct *tty; 1569 1570 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, msr); 1571 1572 if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | 1573 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { 1574 icount = &edge_port->port->icount; 1575 1576 /* update input line counters */ 1577 if (msr & EDGEPORT_MSR_DELTA_CTS) 1578 icount->cts++; 1579 if (msr & EDGEPORT_MSR_DELTA_DSR) 1580 icount->dsr++; 1581 if (msr & EDGEPORT_MSR_DELTA_CD) 1582 icount->dcd++; 1583 if (msr & EDGEPORT_MSR_DELTA_RI) 1584 icount->rng++; 1585 wake_up_interruptible(&edge_port->port->port.delta_msr_wait); 1586 } 1587 1588 /* Save the new modem status */ 1589 edge_port->shadow_msr = msr & 0xf0; 1590 1591 tty = tty_port_tty_get(&edge_port->port->port); 1592 /* handle CTS flow control */ 1593 if (tty && C_CRTSCTS(tty)) { 1594 if (msr & EDGEPORT_MSR_CTS) 1595 tty_wakeup(tty); 1596 } 1597 tty_kref_put(tty); 1598 } 1599 1600 static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data, 1601 u8 lsr, u8 data) 1602 { 1603 struct async_icount *icount; 1604 u8 new_lsr = (u8)(lsr & (u8)(LSR_OVER_ERR | LSR_PAR_ERR | 1605 LSR_FRM_ERR | LSR_BREAK)); 1606 1607 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, new_lsr); 1608 1609 edge_port->shadow_lsr = lsr; 1610 1611 if (new_lsr & LSR_BREAK) 1612 /* 1613 * Parity and Framing errors only count if they 1614 * occur exclusive of a break being received. 1615 */ 1616 new_lsr &= (u8)(LSR_OVER_ERR | LSR_BREAK); 1617 1618 /* Place LSR data byte into Rx buffer */ 1619 if (lsr_data) 1620 edge_tty_recv(edge_port->port, &data, 1); 1621 1622 /* update input line counters */ 1623 icount = &edge_port->port->icount; 1624 if (new_lsr & LSR_BREAK) 1625 icount->brk++; 1626 if (new_lsr & LSR_OVER_ERR) 1627 icount->overrun++; 1628 if (new_lsr & LSR_PAR_ERR) 1629 icount->parity++; 1630 if (new_lsr & LSR_FRM_ERR) 1631 icount->frame++; 1632 } 1633 1634 static void edge_interrupt_callback(struct urb *urb) 1635 { 1636 struct edgeport_serial *edge_serial = urb->context; 1637 struct usb_serial_port *port; 1638 struct edgeport_port *edge_port; 1639 struct device *dev; 1640 unsigned char *data = urb->transfer_buffer; 1641 int length = urb->actual_length; 1642 int port_number; 1643 int function; 1644 int retval; 1645 u8 lsr; 1646 u8 msr; 1647 int status = urb->status; 1648 1649 switch (status) { 1650 case 0: 1651 /* success */ 1652 break; 1653 case -ECONNRESET: 1654 case -ENOENT: 1655 case -ESHUTDOWN: 1656 /* this urb is terminated, clean up */ 1657 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", 1658 __func__, status); 1659 return; 1660 default: 1661 dev_err(&urb->dev->dev, "%s - nonzero urb status received: " 1662 "%d\n", __func__, status); 1663 goto exit; 1664 } 1665 1666 if (!length) { 1667 dev_dbg(&urb->dev->dev, "%s - no data in urb\n", __func__); 1668 goto exit; 1669 } 1670 1671 dev = &edge_serial->serial->dev->dev; 1672 usb_serial_debug_data(dev, __func__, length, data); 1673 1674 if (length != 2) { 1675 dev_dbg(dev, "%s - expecting packet of size 2, got %d\n", __func__, length); 1676 goto exit; 1677 } 1678 1679 port_number = TIUMP_GET_PORT_FROM_CODE(data[0]); 1680 function = TIUMP_GET_FUNC_FROM_CODE(data[0]); 1681 dev_dbg(dev, "%s - port_number %d, function %d, info 0x%x\n", __func__, 1682 port_number, function, data[1]); 1683 1684 if (port_number >= edge_serial->serial->num_ports) { 1685 dev_err(dev, "bad port number %d\n", port_number); 1686 goto exit; 1687 } 1688 1689 port = edge_serial->serial->port[port_number]; 1690 edge_port = usb_get_serial_port_data(port); 1691 if (!edge_port) { 1692 dev_dbg(dev, "%s - edge_port not found\n", __func__); 1693 return; 1694 } 1695 switch (function) { 1696 case TIUMP_INTERRUPT_CODE_LSR: 1697 lsr = map_line_status(data[1]); 1698 if (lsr & UMP_UART_LSR_DATA_MASK) { 1699 /* 1700 * Save the LSR event for bulk read completion routine 1701 */ 1702 dev_dbg(dev, "%s - LSR Event Port %u LSR Status = %02x\n", 1703 __func__, port_number, lsr); 1704 edge_port->lsr_event = 1; 1705 edge_port->lsr_mask = lsr; 1706 } else { 1707 dev_dbg(dev, "%s - ===== Port %d LSR Status = %02x ======\n", 1708 __func__, port_number, lsr); 1709 handle_new_lsr(edge_port, 0, lsr, 0); 1710 } 1711 break; 1712 1713 case TIUMP_INTERRUPT_CODE_MSR: /* MSR */ 1714 /* Copy MSR from UMP */ 1715 msr = data[1]; 1716 dev_dbg(dev, "%s - ===== Port %u MSR Status = %02x ======\n", 1717 __func__, port_number, msr); 1718 handle_new_msr(edge_port, msr); 1719 break; 1720 1721 default: 1722 dev_err(&urb->dev->dev, 1723 "%s - Unknown Interrupt code from UMP %x\n", 1724 __func__, data[1]); 1725 break; 1726 1727 } 1728 1729 exit: 1730 retval = usb_submit_urb(urb, GFP_ATOMIC); 1731 if (retval) 1732 dev_err(&urb->dev->dev, 1733 "%s - usb_submit_urb failed with result %d\n", 1734 __func__, retval); 1735 } 1736 1737 static void edge_bulk_in_callback(struct urb *urb) 1738 { 1739 struct edgeport_port *edge_port = urb->context; 1740 struct device *dev = &edge_port->port->dev; 1741 unsigned char *data = urb->transfer_buffer; 1742 unsigned long flags; 1743 int retval = 0; 1744 int port_number; 1745 int status = urb->status; 1746 1747 switch (status) { 1748 case 0: 1749 /* success */ 1750 break; 1751 case -ECONNRESET: 1752 case -ENOENT: 1753 case -ESHUTDOWN: 1754 /* this urb is terminated, clean up */ 1755 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status); 1756 return; 1757 default: 1758 dev_err(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", __func__, status); 1759 } 1760 1761 if (status == -EPIPE) 1762 goto exit; 1763 1764 if (status) { 1765 dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__); 1766 return; 1767 } 1768 1769 port_number = edge_port->port->port_number; 1770 1771 if (urb->actual_length > 0 && edge_port->lsr_event) { 1772 edge_port->lsr_event = 0; 1773 dev_dbg(dev, "%s ===== Port %u LSR Status = %02x, Data = %02x ======\n", 1774 __func__, port_number, edge_port->lsr_mask, *data); 1775 handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data); 1776 /* Adjust buffer length/pointer */ 1777 --urb->actual_length; 1778 ++data; 1779 } 1780 1781 if (urb->actual_length) { 1782 usb_serial_debug_data(dev, __func__, urb->actual_length, data); 1783 if (edge_port->close_pending) 1784 dev_dbg(dev, "%s - close pending, dropping data on the floor\n", 1785 __func__); 1786 else 1787 edge_tty_recv(edge_port->port, data, 1788 urb->actual_length); 1789 edge_port->port->icount.rx += urb->actual_length; 1790 } 1791 1792 exit: 1793 /* continue read unless stopped */ 1794 spin_lock_irqsave(&edge_port->ep_lock, flags); 1795 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) 1796 retval = usb_submit_urb(urb, GFP_ATOMIC); 1797 else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING) 1798 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED; 1799 1800 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1801 if (retval) 1802 dev_err(dev, "%s - usb_submit_urb failed with result %d\n", __func__, retval); 1803 } 1804 1805 static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, 1806 int length) 1807 { 1808 int queued; 1809 1810 queued = tty_insert_flip_string(&port->port, data, length); 1811 if (queued < length) 1812 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n", 1813 __func__, length - queued); 1814 tty_flip_buffer_push(&port->port); 1815 } 1816 1817 static void edge_bulk_out_callback(struct urb *urb) 1818 { 1819 struct usb_serial_port *port = urb->context; 1820 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1821 int status = urb->status; 1822 struct tty_struct *tty; 1823 1824 edge_port->ep_write_urb_in_use = 0; 1825 1826 switch (status) { 1827 case 0: 1828 /* success */ 1829 break; 1830 case -ECONNRESET: 1831 case -ENOENT: 1832 case -ESHUTDOWN: 1833 /* this urb is terminated, clean up */ 1834 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", 1835 __func__, status); 1836 return; 1837 default: 1838 dev_err_console(port, "%s - nonzero write bulk status " 1839 "received: %d\n", __func__, status); 1840 } 1841 1842 /* send any buffered data */ 1843 tty = tty_port_tty_get(&port->port); 1844 edge_send(port, tty); 1845 tty_kref_put(tty); 1846 } 1847 1848 static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) 1849 { 1850 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1851 struct edgeport_serial *edge_serial; 1852 struct usb_device *dev; 1853 struct urb *urb; 1854 int status; 1855 u16 open_settings; 1856 u8 transaction_timeout; 1857 1858 if (edge_port == NULL) 1859 return -ENODEV; 1860 1861 dev = port->serial->dev; 1862 1863 /* turn off loopback */ 1864 status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0); 1865 if (status) { 1866 dev_err(&port->dev, 1867 "%s - cannot send clear loopback command, %d\n", 1868 __func__, status); 1869 return status; 1870 } 1871 1872 /* set up the port settings */ 1873 if (tty) 1874 edge_set_termios(tty, port, &tty->termios); 1875 1876 /* open up the port */ 1877 1878 /* milliseconds to timeout for DMA transfer */ 1879 transaction_timeout = 2; 1880 1881 edge_port->ump_read_timeout = 1882 max(20, ((transaction_timeout * 3) / 2)); 1883 1884 /* milliseconds to timeout for DMA transfer */ 1885 open_settings = (u8)(UMP_DMA_MODE_CONTINOUS | 1886 UMP_PIPE_TRANS_TIMEOUT_ENA | 1887 (transaction_timeout << 2)); 1888 1889 dev_dbg(&port->dev, "%s - Sending UMPC_OPEN_PORT\n", __func__); 1890 1891 /* Tell TI to open and start the port */ 1892 status = send_port_cmd(port, UMPC_OPEN_PORT, open_settings, NULL, 0); 1893 if (status) { 1894 dev_err(&port->dev, "%s - cannot send open command, %d\n", 1895 __func__, status); 1896 return status; 1897 } 1898 1899 /* Start the DMA? */ 1900 status = send_port_cmd(port, UMPC_START_PORT, 0, NULL, 0); 1901 if (status) { 1902 dev_err(&port->dev, "%s - cannot send start DMA command, %d\n", 1903 __func__, status); 1904 return status; 1905 } 1906 1907 /* Clear TX and RX buffers in UMP */ 1908 status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN); 1909 if (status) { 1910 dev_err(&port->dev, 1911 "%s - cannot send clear buffers command, %d\n", 1912 __func__, status); 1913 return status; 1914 } 1915 1916 /* Read Initial MSR */ 1917 status = read_port_cmd(port, UMPC_READ_MSR, 0, &edge_port->shadow_msr, 1); 1918 if (status) { 1919 dev_err(&port->dev, "%s - cannot send read MSR command, %d\n", 1920 __func__, status); 1921 return status; 1922 } 1923 1924 dev_dbg(&port->dev, "ShadowMSR 0x%X\n", edge_port->shadow_msr); 1925 1926 /* Set Initial MCR */ 1927 edge_port->shadow_mcr = MCR_RTS | MCR_DTR; 1928 dev_dbg(&port->dev, "ShadowMCR 0x%X\n", edge_port->shadow_mcr); 1929 1930 edge_serial = edge_port->edge_serial; 1931 if (mutex_lock_interruptible(&edge_serial->es_lock)) 1932 return -ERESTARTSYS; 1933 if (edge_serial->num_ports_open == 0) { 1934 /* we are the first port to open, post the interrupt urb */ 1935 urb = edge_serial->serial->port[0]->interrupt_in_urb; 1936 urb->context = edge_serial; 1937 status = usb_submit_urb(urb, GFP_KERNEL); 1938 if (status) { 1939 dev_err(&port->dev, 1940 "%s - usb_submit_urb failed with value %d\n", 1941 __func__, status); 1942 goto release_es_lock; 1943 } 1944 } 1945 1946 /* 1947 * reset the data toggle on the bulk endpoints to work around bug in 1948 * host controllers where things get out of sync some times 1949 */ 1950 usb_clear_halt(dev, port->write_urb->pipe); 1951 usb_clear_halt(dev, port->read_urb->pipe); 1952 1953 /* start up our bulk read urb */ 1954 urb = port->read_urb; 1955 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; 1956 urb->context = edge_port; 1957 status = usb_submit_urb(urb, GFP_KERNEL); 1958 if (status) { 1959 dev_err(&port->dev, 1960 "%s - read bulk usb_submit_urb failed with value %d\n", 1961 __func__, status); 1962 goto unlink_int_urb; 1963 } 1964 1965 ++edge_serial->num_ports_open; 1966 1967 goto release_es_lock; 1968 1969 unlink_int_urb: 1970 if (edge_port->edge_serial->num_ports_open == 0) 1971 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 1972 release_es_lock: 1973 mutex_unlock(&edge_serial->es_lock); 1974 return status; 1975 } 1976 1977 static void edge_close(struct usb_serial_port *port) 1978 { 1979 struct edgeport_serial *edge_serial; 1980 struct edgeport_port *edge_port; 1981 unsigned long flags; 1982 1983 edge_serial = usb_get_serial_data(port->serial); 1984 edge_port = usb_get_serial_port_data(port); 1985 if (edge_serial == NULL || edge_port == NULL) 1986 return; 1987 1988 /* 1989 * The bulkreadcompletion routine will check 1990 * this flag and dump add read data 1991 */ 1992 edge_port->close_pending = 1; 1993 1994 usb_kill_urb(port->read_urb); 1995 usb_kill_urb(port->write_urb); 1996 edge_port->ep_write_urb_in_use = 0; 1997 spin_lock_irqsave(&edge_port->ep_lock, flags); 1998 kfifo_reset_out(&port->write_fifo); 1999 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2000 2001 dev_dbg(&port->dev, "%s - send umpc_close_port\n", __func__); 2002 send_port_cmd(port, UMPC_CLOSE_PORT, 0, NULL, 0); 2003 2004 mutex_lock(&edge_serial->es_lock); 2005 --edge_port->edge_serial->num_ports_open; 2006 if (edge_port->edge_serial->num_ports_open <= 0) { 2007 /* last port is now closed, let's shut down our interrupt urb */ 2008 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 2009 edge_port->edge_serial->num_ports_open = 0; 2010 } 2011 mutex_unlock(&edge_serial->es_lock); 2012 edge_port->close_pending = 0; 2013 } 2014 2015 static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, 2016 const unsigned char *data, int count) 2017 { 2018 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2019 2020 if (count == 0) { 2021 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__); 2022 return 0; 2023 } 2024 2025 if (edge_port == NULL) 2026 return -ENODEV; 2027 if (edge_port->close_pending == 1) 2028 return -ENODEV; 2029 2030 count = kfifo_in_locked(&port->write_fifo, data, count, 2031 &edge_port->ep_lock); 2032 edge_send(port, tty); 2033 2034 return count; 2035 } 2036 2037 static void edge_send(struct usb_serial_port *port, struct tty_struct *tty) 2038 { 2039 int count, result; 2040 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2041 unsigned long flags; 2042 2043 spin_lock_irqsave(&edge_port->ep_lock, flags); 2044 2045 if (edge_port->ep_write_urb_in_use) { 2046 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2047 return; 2048 } 2049 2050 count = kfifo_out(&port->write_fifo, 2051 port->write_urb->transfer_buffer, 2052 port->bulk_out_size); 2053 2054 if (count == 0) { 2055 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2056 return; 2057 } 2058 2059 edge_port->ep_write_urb_in_use = 1; 2060 2061 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2062 2063 usb_serial_debug_data(&port->dev, __func__, count, port->write_urb->transfer_buffer); 2064 2065 /* set up our urb */ 2066 port->write_urb->transfer_buffer_length = count; 2067 2068 /* send the data out the bulk port */ 2069 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 2070 if (result) { 2071 dev_err_console(port, 2072 "%s - failed submitting write urb, error %d\n", 2073 __func__, result); 2074 edge_port->ep_write_urb_in_use = 0; 2075 /* TODO: reschedule edge_send */ 2076 } else 2077 edge_port->port->icount.tx += count; 2078 2079 /* 2080 * wakeup any process waiting for writes to complete 2081 * there is now more room in the buffer for new writes 2082 */ 2083 if (tty) 2084 tty_wakeup(tty); 2085 } 2086 2087 static unsigned int edge_write_room(struct tty_struct *tty) 2088 { 2089 struct usb_serial_port *port = tty->driver_data; 2090 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2091 unsigned int room; 2092 unsigned long flags; 2093 2094 if (edge_port == NULL) 2095 return 0; 2096 if (edge_port->close_pending == 1) 2097 return 0; 2098 2099 spin_lock_irqsave(&edge_port->ep_lock, flags); 2100 room = kfifo_avail(&port->write_fifo); 2101 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2102 2103 dev_dbg(&port->dev, "%s - returns %u\n", __func__, room); 2104 return room; 2105 } 2106 2107 static unsigned int edge_chars_in_buffer(struct tty_struct *tty) 2108 { 2109 struct usb_serial_port *port = tty->driver_data; 2110 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2111 unsigned int chars; 2112 unsigned long flags; 2113 if (edge_port == NULL) 2114 return 0; 2115 2116 spin_lock_irqsave(&edge_port->ep_lock, flags); 2117 chars = kfifo_len(&port->write_fifo); 2118 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2119 2120 dev_dbg(&port->dev, "%s - returns %u\n", __func__, chars); 2121 return chars; 2122 } 2123 2124 static bool edge_tx_empty(struct usb_serial_port *port) 2125 { 2126 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2127 int ret; 2128 2129 ret = tx_active(edge_port); 2130 if (ret > 0) 2131 return false; 2132 2133 return true; 2134 } 2135 2136 static void edge_throttle(struct tty_struct *tty) 2137 { 2138 struct usb_serial_port *port = tty->driver_data; 2139 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2140 int status; 2141 2142 if (edge_port == NULL) 2143 return; 2144 2145 /* if we are implementing XON/XOFF, send the stop character */ 2146 if (I_IXOFF(tty)) { 2147 unsigned char stop_char = STOP_CHAR(tty); 2148 status = edge_write(tty, port, &stop_char, 1); 2149 if (status <= 0) { 2150 dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status); 2151 } 2152 } 2153 2154 /* 2155 * if we are implementing RTS/CTS, stop reads 2156 * and the Edgeport will clear the RTS line 2157 */ 2158 if (C_CRTSCTS(tty)) 2159 stop_read(edge_port); 2160 2161 } 2162 2163 static void edge_unthrottle(struct tty_struct *tty) 2164 { 2165 struct usb_serial_port *port = tty->driver_data; 2166 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2167 int status; 2168 2169 if (edge_port == NULL) 2170 return; 2171 2172 /* if we are implementing XON/XOFF, send the start character */ 2173 if (I_IXOFF(tty)) { 2174 unsigned char start_char = START_CHAR(tty); 2175 status = edge_write(tty, port, &start_char, 1); 2176 if (status <= 0) { 2177 dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status); 2178 } 2179 } 2180 /* 2181 * if we are implementing RTS/CTS, restart reads 2182 * are the Edgeport will assert the RTS line 2183 */ 2184 if (C_CRTSCTS(tty)) { 2185 status = restart_read(edge_port); 2186 if (status) 2187 dev_err(&port->dev, 2188 "%s - read bulk usb_submit_urb failed: %d\n", 2189 __func__, status); 2190 } 2191 2192 } 2193 2194 static void stop_read(struct edgeport_port *edge_port) 2195 { 2196 unsigned long flags; 2197 2198 spin_lock_irqsave(&edge_port->ep_lock, flags); 2199 2200 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) 2201 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING; 2202 edge_port->shadow_mcr &= ~MCR_RTS; 2203 2204 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2205 } 2206 2207 static int restart_read(struct edgeport_port *edge_port) 2208 { 2209 struct urb *urb; 2210 int status = 0; 2211 unsigned long flags; 2212 2213 spin_lock_irqsave(&edge_port->ep_lock, flags); 2214 2215 if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) { 2216 urb = edge_port->port->read_urb; 2217 status = usb_submit_urb(urb, GFP_ATOMIC); 2218 } 2219 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; 2220 edge_port->shadow_mcr |= MCR_RTS; 2221 2222 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2223 2224 return status; 2225 } 2226 2227 static void change_port_settings(struct tty_struct *tty, 2228 struct edgeport_port *edge_port, const struct ktermios *old_termios) 2229 { 2230 struct device *dev = &edge_port->port->dev; 2231 struct ump_uart_config *config; 2232 int baud; 2233 unsigned cflag; 2234 int status; 2235 2236 config = kmalloc_obj(*config); 2237 if (!config) { 2238 tty->termios = *old_termios; 2239 return; 2240 } 2241 2242 cflag = tty->termios.c_cflag; 2243 2244 config->wFlags = 0; 2245 2246 /* These flags must be set */ 2247 config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT; 2248 config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR; 2249 config->bUartMode = (u8)(edge_port->bUartMode); 2250 2251 switch (cflag & CSIZE) { 2252 case CS5: 2253 config->bDataBits = UMP_UART_CHAR5BITS; 2254 dev_dbg(dev, "%s - data bits = 5\n", __func__); 2255 break; 2256 case CS6: 2257 config->bDataBits = UMP_UART_CHAR6BITS; 2258 dev_dbg(dev, "%s - data bits = 6\n", __func__); 2259 break; 2260 case CS7: 2261 config->bDataBits = UMP_UART_CHAR7BITS; 2262 dev_dbg(dev, "%s - data bits = 7\n", __func__); 2263 break; 2264 default: 2265 case CS8: 2266 config->bDataBits = UMP_UART_CHAR8BITS; 2267 dev_dbg(dev, "%s - data bits = 8\n", __func__); 2268 break; 2269 } 2270 2271 if (cflag & PARENB) { 2272 if (cflag & PARODD) { 2273 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; 2274 config->bParity = UMP_UART_ODDPARITY; 2275 dev_dbg(dev, "%s - parity = odd\n", __func__); 2276 } else { 2277 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; 2278 config->bParity = UMP_UART_EVENPARITY; 2279 dev_dbg(dev, "%s - parity = even\n", __func__); 2280 } 2281 } else { 2282 config->bParity = UMP_UART_NOPARITY; 2283 dev_dbg(dev, "%s - parity = none\n", __func__); 2284 } 2285 2286 if (cflag & CSTOPB) { 2287 config->bStopBits = UMP_UART_STOPBIT2; 2288 dev_dbg(dev, "%s - stop bits = 2\n", __func__); 2289 } else { 2290 config->bStopBits = UMP_UART_STOPBIT1; 2291 dev_dbg(dev, "%s - stop bits = 1\n", __func__); 2292 } 2293 2294 /* figure out the flow control settings */ 2295 if (cflag & CRTSCTS) { 2296 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW; 2297 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW; 2298 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__); 2299 } else { 2300 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__); 2301 restart_read(edge_port); 2302 } 2303 2304 /* 2305 * if we are implementing XON/XOFF, set the start and stop 2306 * character in the device 2307 */ 2308 config->cXon = START_CHAR(tty); 2309 config->cXoff = STOP_CHAR(tty); 2310 2311 /* if we are implementing INBOUND XON/XOFF */ 2312 if (I_IXOFF(tty)) { 2313 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X; 2314 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", 2315 __func__, config->cXon, config->cXoff); 2316 } else 2317 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__); 2318 2319 /* if we are implementing OUTBOUND XON/XOFF */ 2320 if (I_IXON(tty)) { 2321 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X; 2322 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", 2323 __func__, config->cXon, config->cXoff); 2324 } else 2325 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__); 2326 2327 tty->termios.c_cflag &= ~CMSPAR; 2328 2329 /* Round the baud rate */ 2330 baud = tty_get_baud_rate(tty); 2331 if (!baud) { 2332 /* pick a default, any default... */ 2333 baud = 9600; 2334 } else { 2335 /* Avoid a zero divisor. */ 2336 baud = min(baud, 461550); 2337 tty_encode_baud_rate(tty, baud, baud); 2338 } 2339 2340 edge_port->baud_rate = baud; 2341 config->wBaudRate = (u16)((461550L + baud/2) / baud); 2342 2343 /* FIXME: Recompute actual baud from divisor here */ 2344 2345 dev_dbg(dev, "%s - baud rate = %d, wBaudRate = %d\n", __func__, baud, config->wBaudRate); 2346 2347 dev_dbg(dev, "wBaudRate: %d\n", (int)(461550L / config->wBaudRate)); 2348 dev_dbg(dev, "wFlags: 0x%x\n", config->wFlags); 2349 dev_dbg(dev, "bDataBits: %d\n", config->bDataBits); 2350 dev_dbg(dev, "bParity: %d\n", config->bParity); 2351 dev_dbg(dev, "bStopBits: %d\n", config->bStopBits); 2352 dev_dbg(dev, "cXon: %d\n", config->cXon); 2353 dev_dbg(dev, "cXoff: %d\n", config->cXoff); 2354 dev_dbg(dev, "bUartMode: %d\n", config->bUartMode); 2355 2356 /* move the word values into big endian mode */ 2357 cpu_to_be16s(&config->wFlags); 2358 cpu_to_be16s(&config->wBaudRate); 2359 2360 status = send_port_cmd(edge_port->port, UMPC_SET_CONFIG, 0, config, 2361 sizeof(*config)); 2362 if (status) 2363 dev_dbg(dev, "%s - error %d when trying to write config to device\n", 2364 __func__, status); 2365 kfree(config); 2366 } 2367 2368 static void edge_set_termios(struct tty_struct *tty, 2369 struct usb_serial_port *port, 2370 const struct ktermios *old_termios) 2371 { 2372 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2373 2374 if (edge_port == NULL) 2375 return; 2376 /* change the port settings to the new ones specified */ 2377 change_port_settings(tty, edge_port, old_termios); 2378 } 2379 2380 static int edge_tiocmset(struct tty_struct *tty, 2381 unsigned int set, unsigned int clear) 2382 { 2383 struct usb_serial_port *port = tty->driver_data; 2384 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2385 unsigned int mcr; 2386 unsigned long flags; 2387 2388 spin_lock_irqsave(&edge_port->ep_lock, flags); 2389 mcr = edge_port->shadow_mcr; 2390 if (set & TIOCM_RTS) 2391 mcr |= MCR_RTS; 2392 if (set & TIOCM_DTR) 2393 mcr |= MCR_DTR; 2394 if (set & TIOCM_LOOP) 2395 mcr |= MCR_LOOPBACK; 2396 2397 if (clear & TIOCM_RTS) 2398 mcr &= ~MCR_RTS; 2399 if (clear & TIOCM_DTR) 2400 mcr &= ~MCR_DTR; 2401 if (clear & TIOCM_LOOP) 2402 mcr &= ~MCR_LOOPBACK; 2403 2404 edge_port->shadow_mcr = mcr; 2405 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2406 2407 restore_mcr(edge_port, mcr); 2408 return 0; 2409 } 2410 2411 static int edge_tiocmget(struct tty_struct *tty) 2412 { 2413 struct usb_serial_port *port = tty->driver_data; 2414 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2415 unsigned int result = 0; 2416 unsigned int msr; 2417 unsigned int mcr; 2418 unsigned long flags; 2419 2420 spin_lock_irqsave(&edge_port->ep_lock, flags); 2421 2422 msr = edge_port->shadow_msr; 2423 mcr = edge_port->shadow_mcr; 2424 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ 2425 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ 2426 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ 2427 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */ 2428 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ 2429 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ 2430 2431 2432 dev_dbg(&port->dev, "%s -- %x\n", __func__, result); 2433 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2434 2435 return result; 2436 } 2437 2438 static int edge_break(struct tty_struct *tty, int break_state) 2439 { 2440 struct usb_serial_port *port = tty->driver_data; 2441 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2442 int status; 2443 int bv = 0; /* Off */ 2444 2445 if (break_state == -1) 2446 bv = 1; /* On */ 2447 2448 status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv); 2449 if (status) { 2450 dev_dbg(&port->dev, "%s - error %d sending break set/clear command.\n", 2451 __func__, status); 2452 return status; 2453 } 2454 2455 return 0; 2456 } 2457 2458 static void edge_heartbeat_schedule(struct edgeport_serial *edge_serial) 2459 { 2460 if (!edge_serial->use_heartbeat) 2461 return; 2462 2463 schedule_delayed_work(&edge_serial->heartbeat_work, 2464 FW_HEARTBEAT_SECS * HZ); 2465 } 2466 2467 static void edge_heartbeat_work(struct work_struct *work) 2468 { 2469 struct edgeport_serial *serial; 2470 struct ti_i2c_desc *rom_desc; 2471 2472 serial = container_of(work, struct edgeport_serial, 2473 heartbeat_work.work); 2474 2475 rom_desc = kmalloc_obj(*rom_desc); 2476 2477 /* Descriptor address request is enough to reset the firmware timer */ 2478 if (!rom_desc || !get_descriptor_addr(serial, I2C_DESC_TYPE_ION, 2479 rom_desc)) { 2480 dev_err(&serial->serial->interface->dev, 2481 "%s - Incomplete heartbeat\n", __func__); 2482 } 2483 kfree(rom_desc); 2484 2485 edge_heartbeat_schedule(serial); 2486 } 2487 2488 static int edge_calc_num_ports(struct usb_serial *serial, 2489 struct usb_serial_endpoints *epds) 2490 { 2491 struct device *dev = &serial->interface->dev; 2492 unsigned char num_ports = serial->type->num_ports; 2493 2494 /* Make sure we have the required endpoints when in download mode. */ 2495 if (serial->interface->cur_altsetting->desc.bNumEndpoints > 1) { 2496 if (epds->num_bulk_in < num_ports || 2497 epds->num_bulk_out < num_ports || 2498 epds->num_interrupt_in < 1) { 2499 dev_err(dev, "required endpoints missing\n"); 2500 return -ENODEV; 2501 } 2502 } 2503 2504 return num_ports; 2505 } 2506 2507 static int edge_startup(struct usb_serial *serial) 2508 { 2509 struct edgeport_serial *edge_serial; 2510 int status; 2511 u16 product_id; 2512 2513 /* create our private serial structure */ 2514 edge_serial = kzalloc_obj(struct edgeport_serial); 2515 if (!edge_serial) 2516 return -ENOMEM; 2517 2518 mutex_init(&edge_serial->es_lock); 2519 edge_serial->serial = serial; 2520 INIT_DELAYED_WORK(&edge_serial->heartbeat_work, edge_heartbeat_work); 2521 usb_set_serial_data(serial, edge_serial); 2522 2523 status = download_fw(edge_serial); 2524 if (status < 0) { 2525 kfree(edge_serial); 2526 return status; 2527 } 2528 2529 if (status > 0) 2530 return 1; /* bind but do not register any ports */ 2531 2532 product_id = le16_to_cpu( 2533 edge_serial->serial->dev->descriptor.idProduct); 2534 2535 /* Currently only the EP/416 models require heartbeat support */ 2536 if (edge_serial->fw_version > FW_HEARTBEAT_VERSION_CUTOFF) { 2537 if (product_id == ION_DEVICE_ID_TI_EDGEPORT_416 || 2538 product_id == ION_DEVICE_ID_TI_EDGEPORT_416B) { 2539 edge_serial->use_heartbeat = true; 2540 } 2541 } 2542 2543 edge_heartbeat_schedule(edge_serial); 2544 2545 return 0; 2546 } 2547 2548 static void edge_disconnect(struct usb_serial *serial) 2549 { 2550 struct edgeport_serial *edge_serial = usb_get_serial_data(serial); 2551 2552 cancel_delayed_work_sync(&edge_serial->heartbeat_work); 2553 } 2554 2555 static void edge_release(struct usb_serial *serial) 2556 { 2557 struct edgeport_serial *edge_serial = usb_get_serial_data(serial); 2558 2559 cancel_delayed_work_sync(&edge_serial->heartbeat_work); 2560 kfree(edge_serial); 2561 } 2562 2563 static int edge_port_probe(struct usb_serial_port *port) 2564 { 2565 struct edgeport_port *edge_port; 2566 int ret; 2567 2568 edge_port = kzalloc_obj(*edge_port); 2569 if (!edge_port) 2570 return -ENOMEM; 2571 2572 spin_lock_init(&edge_port->ep_lock); 2573 edge_port->port = port; 2574 edge_port->edge_serial = usb_get_serial_data(port->serial); 2575 edge_port->bUartMode = default_uart_mode; 2576 2577 switch (port->port_number) { 2578 case 0: 2579 edge_port->uart_base = UMPMEM_BASE_UART1; 2580 edge_port->dma_address = UMPD_OEDB1_ADDRESS; 2581 break; 2582 case 1: 2583 edge_port->uart_base = UMPMEM_BASE_UART2; 2584 edge_port->dma_address = UMPD_OEDB2_ADDRESS; 2585 break; 2586 default: 2587 dev_err(&port->dev, "unknown port number\n"); 2588 ret = -ENODEV; 2589 goto err; 2590 } 2591 2592 dev_dbg(&port->dev, 2593 "%s - port_number = %d, uart_base = %04x, dma_address = %04x\n", 2594 __func__, port->port_number, edge_port->uart_base, 2595 edge_port->dma_address); 2596 2597 usb_set_serial_port_data(port, edge_port); 2598 2599 ret = edge_create_sysfs_attrs(port); 2600 if (ret) 2601 goto err; 2602 2603 /* 2604 * The LSR does not tell when the transmitter shift register has 2605 * emptied so add a one-character drain delay. 2606 */ 2607 port->port.drain_delay = 1; 2608 2609 return 0; 2610 err: 2611 kfree(edge_port); 2612 2613 return ret; 2614 } 2615 2616 static void edge_port_remove(struct usb_serial_port *port) 2617 { 2618 struct edgeport_port *edge_port; 2619 2620 edge_port = usb_get_serial_port_data(port); 2621 edge_remove_sysfs_attrs(port); 2622 kfree(edge_port); 2623 } 2624 2625 /* Sysfs Attributes */ 2626 2627 static ssize_t uart_mode_show(struct device *dev, 2628 struct device_attribute *attr, char *buf) 2629 { 2630 struct usb_serial_port *port = to_usb_serial_port(dev); 2631 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2632 2633 return sprintf(buf, "%d\n", edge_port->bUartMode); 2634 } 2635 2636 static ssize_t uart_mode_store(struct device *dev, 2637 struct device_attribute *attr, const char *valbuf, size_t count) 2638 { 2639 struct usb_serial_port *port = to_usb_serial_port(dev); 2640 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2641 unsigned int v = simple_strtoul(valbuf, NULL, 0); 2642 2643 dev_dbg(dev, "%s: setting uart_mode = %d\n", __func__, v); 2644 2645 if (v < 256) 2646 edge_port->bUartMode = v; 2647 else 2648 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v); 2649 2650 return count; 2651 } 2652 static DEVICE_ATTR_RW(uart_mode); 2653 2654 static int edge_create_sysfs_attrs(struct usb_serial_port *port) 2655 { 2656 return device_create_file(&port->dev, &dev_attr_uart_mode); 2657 } 2658 2659 static int edge_remove_sysfs_attrs(struct usb_serial_port *port) 2660 { 2661 device_remove_file(&port->dev, &dev_attr_uart_mode); 2662 return 0; 2663 } 2664 2665 #ifdef CONFIG_PM 2666 static int edge_suspend(struct usb_serial *serial, pm_message_t message) 2667 { 2668 struct edgeport_serial *edge_serial = usb_get_serial_data(serial); 2669 2670 cancel_delayed_work_sync(&edge_serial->heartbeat_work); 2671 2672 return 0; 2673 } 2674 2675 static int edge_resume(struct usb_serial *serial) 2676 { 2677 struct edgeport_serial *edge_serial = usb_get_serial_data(serial); 2678 2679 edge_heartbeat_schedule(edge_serial); 2680 2681 return 0; 2682 } 2683 #endif 2684 2685 static struct usb_serial_driver edgeport_1port_device = { 2686 .driver = { 2687 .name = "edgeport_ti_1", 2688 }, 2689 .description = "Edgeport TI 1 port adapter", 2690 .id_table = edgeport_1port_id_table, 2691 .num_ports = 1, 2692 .num_bulk_out = 1, 2693 .open = edge_open, 2694 .close = edge_close, 2695 .throttle = edge_throttle, 2696 .unthrottle = edge_unthrottle, 2697 .attach = edge_startup, 2698 .calc_num_ports = edge_calc_num_ports, 2699 .disconnect = edge_disconnect, 2700 .release = edge_release, 2701 .port_probe = edge_port_probe, 2702 .port_remove = edge_port_remove, 2703 .set_termios = edge_set_termios, 2704 .tiocmget = edge_tiocmget, 2705 .tiocmset = edge_tiocmset, 2706 .tiocmiwait = usb_serial_generic_tiocmiwait, 2707 .get_icount = usb_serial_generic_get_icount, 2708 .write = edge_write, 2709 .write_room = edge_write_room, 2710 .chars_in_buffer = edge_chars_in_buffer, 2711 .tx_empty = edge_tx_empty, 2712 .break_ctl = edge_break, 2713 .read_int_callback = edge_interrupt_callback, 2714 .read_bulk_callback = edge_bulk_in_callback, 2715 .write_bulk_callback = edge_bulk_out_callback, 2716 #ifdef CONFIG_PM 2717 .suspend = edge_suspend, 2718 .resume = edge_resume, 2719 #endif 2720 }; 2721 2722 static struct usb_serial_driver edgeport_2port_device = { 2723 .driver = { 2724 .name = "edgeport_ti_2", 2725 }, 2726 .description = "Edgeport TI 2 port adapter", 2727 .id_table = edgeport_2port_id_table, 2728 .num_ports = 2, 2729 .num_bulk_out = 1, 2730 .open = edge_open, 2731 .close = edge_close, 2732 .throttle = edge_throttle, 2733 .unthrottle = edge_unthrottle, 2734 .attach = edge_startup, 2735 .calc_num_ports = edge_calc_num_ports, 2736 .disconnect = edge_disconnect, 2737 .release = edge_release, 2738 .port_probe = edge_port_probe, 2739 .port_remove = edge_port_remove, 2740 .set_termios = edge_set_termios, 2741 .tiocmget = edge_tiocmget, 2742 .tiocmset = edge_tiocmset, 2743 .tiocmiwait = usb_serial_generic_tiocmiwait, 2744 .get_icount = usb_serial_generic_get_icount, 2745 .write = edge_write, 2746 .write_room = edge_write_room, 2747 .chars_in_buffer = edge_chars_in_buffer, 2748 .tx_empty = edge_tx_empty, 2749 .break_ctl = edge_break, 2750 .read_int_callback = edge_interrupt_callback, 2751 .read_bulk_callback = edge_bulk_in_callback, 2752 .write_bulk_callback = edge_bulk_out_callback, 2753 #ifdef CONFIG_PM 2754 .suspend = edge_suspend, 2755 .resume = edge_resume, 2756 #endif 2757 }; 2758 2759 static struct usb_serial_driver * const serial_drivers[] = { 2760 &edgeport_1port_device, &edgeport_2port_device, NULL 2761 }; 2762 2763 module_usb_serial_driver(serial_drivers, id_table_combined); 2764 2765 MODULE_AUTHOR(DRIVER_AUTHOR); 2766 MODULE_DESCRIPTION(DRIVER_DESC); 2767 MODULE_LICENSE("GPL"); 2768 MODULE_FIRMWARE("edgeport/down3.bin"); 2769 2770 module_param(ignore_cpu_rev, bool, 0644); 2771 MODULE_PARM_DESC(ignore_cpu_rev, 2772 "Ignore the cpu revision when connecting to a device"); 2773 2774 module_param(default_uart_mode, int, 0644); 2775 MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ..."); 2776