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_driver.h> 22 #include <linux/tty_flip.h> 23 #include <linux/module.h> 24 #include <linux/spinlock.h> 25 #include <linux/mutex.h> 26 #include <linux/serial.h> 27 #include <linux/swab.h> 28 #include <linux/kfifo.h> 29 #include <linux/ioctl.h> 30 #include <linux/firmware.h> 31 #include <linux/uaccess.h> 32 #include <linux/usb.h> 33 #include <linux/usb/serial.h> 34 35 #include "io_16654.h" 36 #include "io_usbvend.h" 37 #include "io_ti.h" 38 39 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli" 40 #define DRIVER_DESC "Edgeport USB Serial Driver" 41 42 #define EPROM_PAGE_SIZE 64 43 44 45 /* different hardware types */ 46 #define HARDWARE_TYPE_930 0 47 #define HARDWARE_TYPE_TIUMP 1 48 49 /* IOCTL_PRIVATE_TI_GET_MODE Definitions */ 50 #define TI_MODE_CONFIGURING 0 /* Device has not entered start device */ 51 #define TI_MODE_BOOT 1 /* Staying in boot mode */ 52 #define TI_MODE_DOWNLOAD 2 /* Made it to download mode */ 53 #define TI_MODE_TRANSITIONING 3 /* 54 * Currently in boot mode but 55 * transitioning to download mode 56 */ 57 58 /* read urb state */ 59 #define EDGE_READ_URB_RUNNING 0 60 #define EDGE_READ_URB_STOPPING 1 61 #define EDGE_READ_URB_STOPPED 2 62 63 #define EDGE_CLOSING_WAIT 4000 /* in .01 sec */ 64 65 66 /* Product information read from the Edgeport */ 67 struct product_info { 68 int TiMode; /* Current TI Mode */ 69 __u8 hardware_type; /* Type of hardware */ 70 } __attribute__((packed)); 71 72 /* 73 * Edgeport firmware header 74 * 75 * "build_number" has been set to 0 in all three of the images I have 76 * seen, and Digi Tech Support suggests that it is safe to ignore it. 77 * 78 * "length" is the number of bytes of actual data following the header. 79 * 80 * "checksum" is the low order byte resulting from adding the values of 81 * all the data bytes. 82 */ 83 struct edgeport_fw_hdr { 84 u8 major_version; 85 u8 minor_version; 86 __le16 build_number; 87 __le16 length; 88 u8 checksum; 89 } __packed; 90 91 struct edgeport_port { 92 __u16 uart_base; 93 __u16 dma_address; 94 __u8 shadow_msr; 95 __u8 shadow_mcr; 96 __u8 shadow_lsr; 97 __u8 lsr_mask; 98 __u32 ump_read_timeout; /* 99 * Number of milliseconds the UMP will 100 * wait without data before completing 101 * a read short 102 */ 103 int baud_rate; 104 int close_pending; 105 int lsr_event; 106 107 struct edgeport_serial *edge_serial; 108 struct usb_serial_port *port; 109 __u8 bUartMode; /* Port type, 0: RS232, etc. */ 110 spinlock_t ep_lock; 111 int ep_read_urb_state; 112 int ep_write_urb_in_use; 113 }; 114 115 struct edgeport_serial { 116 struct product_info product_info; 117 u8 TI_I2C_Type; /* Type of I2C in UMP */ 118 u8 TiReadI2C; /* 119 * Set to TRUE if we have read the 120 * I2c in Boot Mode 121 */ 122 struct mutex es_lock; 123 int num_ports_open; 124 struct usb_serial *serial; 125 struct delayed_work heartbeat_work; 126 int fw_version; 127 bool use_heartbeat; 128 }; 129 130 131 /* Devices that this driver supports */ 132 static const struct usb_device_id edgeport_1port_id_table[] = { 133 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) }, 134 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) }, 135 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) }, 136 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) }, 137 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) }, 138 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) }, 139 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) }, 140 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) }, 141 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) }, 142 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) }, 143 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) }, 144 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) }, 145 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) }, 146 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) }, 147 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) }, 148 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) }, 149 { } 150 }; 151 152 static const struct usb_device_id edgeport_2port_id_table[] = { 153 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) }, 154 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) }, 155 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) }, 156 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) }, 157 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) }, 158 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) }, 159 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) }, 160 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) }, 161 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) }, 162 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) }, 163 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) }, 164 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) }, 165 /* The 4, 8 and 16 port devices show up as multiple 2 port devices */ 166 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) }, 167 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) }, 168 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) }, 169 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) }, 170 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) }, 171 { } 172 }; 173 174 /* Devices that this driver supports */ 175 static const struct usb_device_id id_table_combined[] = { 176 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) }, 177 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) }, 178 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) }, 179 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) }, 180 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) }, 181 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) }, 182 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) }, 183 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) }, 184 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) }, 185 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) }, 186 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) }, 187 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) }, 188 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) }, 189 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) }, 190 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) }, 191 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) }, 192 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) }, 193 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) }, 194 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) }, 195 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) }, 196 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) }, 197 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) }, 198 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) }, 199 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) }, 200 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) }, 201 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) }, 202 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) }, 203 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) }, 204 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) }, 205 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) }, 206 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) }, 207 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) }, 208 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) }, 209 { } 210 }; 211 212 MODULE_DEVICE_TABLE(usb, id_table_combined); 213 214 static int closing_wait = EDGE_CLOSING_WAIT; 215 static bool ignore_cpu_rev; 216 static int default_uart_mode; /* RS232 */ 217 218 static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, 219 int length); 220 221 static void stop_read(struct edgeport_port *edge_port); 222 static int restart_read(struct edgeport_port *edge_port); 223 224 static void edge_set_termios(struct tty_struct *tty, 225 struct usb_serial_port *port, struct ktermios *old_termios); 226 static void edge_send(struct usb_serial_port *port, struct tty_struct *tty); 227 228 static int do_download_mode(struct edgeport_serial *serial, 229 const struct firmware *fw); 230 static int do_boot_mode(struct edgeport_serial *serial, 231 const struct firmware *fw); 232 233 /* sysfs attributes */ 234 static int edge_create_sysfs_attrs(struct usb_serial_port *port); 235 static int edge_remove_sysfs_attrs(struct usb_serial_port *port); 236 237 /* 238 * Some release of Edgeport firmware "down3.bin" after version 4.80 239 * introduced code to automatically disconnect idle devices on some 240 * Edgeport models after periods of inactivity, typically ~60 seconds. 241 * This occurs without regard to whether ports on the device are open 242 * or not. Digi International Tech Support suggested: 243 * 244 * 1. Adding driver "heartbeat" code to reset the firmware timer by 245 * requesting a descriptor record every 15 seconds, which should be 246 * effective with newer firmware versions that require it, and benign 247 * with older versions that do not. In practice 40 seconds seems often 248 * enough. 249 * 2. The heartbeat code is currently required only on Edgeport/416 models. 250 */ 251 #define FW_HEARTBEAT_VERSION_CUTOFF ((4 << 8) + 80) 252 #define FW_HEARTBEAT_SECS 40 253 254 /* Timeouts in msecs: firmware downloads take longer */ 255 #define TI_VSEND_TIMEOUT_DEFAULT 1000 256 #define TI_VSEND_TIMEOUT_FW_DOWNLOAD 10000 257 258 static int ti_vread_sync(struct usb_device *dev, __u8 request, 259 __u16 value, __u16 index, u8 *data, int size) 260 { 261 int status; 262 263 status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request, 264 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN), 265 value, index, data, size, 1000); 266 if (status < 0) 267 return status; 268 if (status != size) { 269 dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n", 270 __func__, size, status); 271 return -ECOMM; 272 } 273 return 0; 274 } 275 276 static int ti_vsend_sync(struct usb_device *dev, u8 request, u16 value, 277 u16 index, u8 *data, int size, int timeout) 278 { 279 int status; 280 281 status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request, 282 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT), 283 value, index, data, size, timeout); 284 if (status < 0) 285 return status; 286 if (status != size) { 287 dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n", 288 __func__, size, status); 289 return -ECOMM; 290 } 291 return 0; 292 } 293 294 static int send_cmd(struct usb_device *dev, __u8 command, 295 __u8 moduleid, __u16 value, u8 *data, 296 int size) 297 { 298 return ti_vsend_sync(dev, command, value, moduleid, data, size, 299 TI_VSEND_TIMEOUT_DEFAULT); 300 } 301 302 /* clear tx/rx buffers and fifo in TI UMP */ 303 static int purge_port(struct usb_serial_port *port, __u16 mask) 304 { 305 int port_number = port->port_number; 306 307 dev_dbg(&port->dev, "%s - port %d, mask %x\n", __func__, port_number, mask); 308 309 return send_cmd(port->serial->dev, 310 UMPC_PURGE_PORT, 311 (__u8)(UMPM_UART1_PORT + port_number), 312 mask, 313 NULL, 314 0); 315 } 316 317 /** 318 * read_download_mem - Read edgeport memory from TI chip 319 * @dev: usb device pointer 320 * @start_address: Device CPU address at which to read 321 * @length: Length of above data 322 * @address_type: Can read both XDATA and I2C 323 * @buffer: pointer to input data buffer 324 */ 325 static int read_download_mem(struct usb_device *dev, int start_address, 326 int length, __u8 address_type, __u8 *buffer) 327 { 328 int status = 0; 329 __u8 read_length; 330 u16 be_start_address; 331 332 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, length); 333 334 /* 335 * Read in blocks of 64 bytes 336 * (TI firmware can't handle more than 64 byte reads) 337 */ 338 while (length) { 339 if (length > 64) 340 read_length = 64; 341 else 342 read_length = (__u8)length; 343 344 if (read_length > 1) { 345 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, read_length); 346 } 347 /* 348 * NOTE: Must use swab as wIndex is sent in little-endian 349 * byte order regardless of host byte order. 350 */ 351 be_start_address = swab16((u16)start_address); 352 status = ti_vread_sync(dev, UMPC_MEMORY_READ, 353 (__u16)address_type, 354 be_start_address, 355 buffer, read_length); 356 357 if (status) { 358 dev_dbg(&dev->dev, "%s - ERROR %x\n", __func__, status); 359 return status; 360 } 361 362 if (read_length > 1) 363 usb_serial_debug_data(&dev->dev, __func__, read_length, buffer); 364 365 /* Update pointers/length */ 366 start_address += read_length; 367 buffer += read_length; 368 length -= read_length; 369 } 370 371 return status; 372 } 373 374 static int read_ram(struct usb_device *dev, int start_address, 375 int length, __u8 *buffer) 376 { 377 return read_download_mem(dev, start_address, length, 378 DTK_ADDR_SPACE_XDATA, buffer); 379 } 380 381 /* Read edgeport memory to a given block */ 382 static int read_boot_mem(struct edgeport_serial *serial, 383 int start_address, int length, __u8 *buffer) 384 { 385 int status = 0; 386 int i; 387 388 for (i = 0; i < length; i++) { 389 status = ti_vread_sync(serial->serial->dev, 390 UMPC_MEMORY_READ, serial->TI_I2C_Type, 391 (__u16)(start_address+i), &buffer[i], 0x01); 392 if (status) { 393 dev_dbg(&serial->serial->dev->dev, "%s - ERROR %x\n", __func__, status); 394 return status; 395 } 396 } 397 398 dev_dbg(&serial->serial->dev->dev, "%s - start_address = %x, length = %d\n", 399 __func__, start_address, length); 400 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer); 401 402 serial->TiReadI2C = 1; 403 404 return status; 405 } 406 407 /* Write given block to TI EPROM memory */ 408 static int write_boot_mem(struct edgeport_serial *serial, 409 int start_address, int length, __u8 *buffer) 410 { 411 int status = 0; 412 int i; 413 u8 *temp; 414 415 /* Must do a read before write */ 416 if (!serial->TiReadI2C) { 417 temp = kmalloc(1, GFP_KERNEL); 418 if (!temp) 419 return -ENOMEM; 420 421 status = read_boot_mem(serial, 0, 1, temp); 422 kfree(temp); 423 if (status) 424 return status; 425 } 426 427 for (i = 0; i < length; ++i) { 428 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE, 429 buffer[i], (u16)(i + start_address), NULL, 430 0, TI_VSEND_TIMEOUT_DEFAULT); 431 if (status) 432 return status; 433 } 434 435 dev_dbg(&serial->serial->dev->dev, "%s - start_sddr = %x, length = %d\n", __func__, start_address, length); 436 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer); 437 438 return status; 439 } 440 441 /* Write edgeport I2C memory to TI chip */ 442 static int write_i2c_mem(struct edgeport_serial *serial, 443 int start_address, int length, __u8 address_type, __u8 *buffer) 444 { 445 struct device *dev = &serial->serial->dev->dev; 446 int status = 0; 447 int write_length; 448 u16 be_start_address; 449 450 /* We can only send a maximum of 1 aligned byte page at a time */ 451 452 /* calculate the number of bytes left in the first page */ 453 write_length = EPROM_PAGE_SIZE - 454 (start_address & (EPROM_PAGE_SIZE - 1)); 455 456 if (write_length > length) 457 write_length = length; 458 459 dev_dbg(dev, "%s - BytesInFirstPage Addr = %x, length = %d\n", 460 __func__, start_address, write_length); 461 usb_serial_debug_data(dev, __func__, write_length, buffer); 462 463 /* 464 * Write first page. 465 * 466 * NOTE: Must use swab as wIndex is sent in little-endian byte order 467 * regardless of host byte order. 468 */ 469 be_start_address = swab16((u16)start_address); 470 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE, 471 (u16)address_type, be_start_address, 472 buffer, write_length, TI_VSEND_TIMEOUT_DEFAULT); 473 if (status) { 474 dev_dbg(dev, "%s - ERROR %d\n", __func__, status); 475 return status; 476 } 477 478 length -= write_length; 479 start_address += write_length; 480 buffer += write_length; 481 482 /* 483 * We should be aligned now -- can write max page size bytes at a 484 * time. 485 */ 486 while (length) { 487 if (length > EPROM_PAGE_SIZE) 488 write_length = EPROM_PAGE_SIZE; 489 else 490 write_length = length; 491 492 dev_dbg(dev, "%s - Page Write Addr = %x, length = %d\n", 493 __func__, start_address, write_length); 494 usb_serial_debug_data(dev, __func__, write_length, buffer); 495 496 /* 497 * Write next page. 498 * 499 * NOTE: Must use swab as wIndex is sent in little-endian byte 500 * order regardless of host byte order. 501 */ 502 be_start_address = swab16((u16)start_address); 503 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE, 504 (u16)address_type, be_start_address, buffer, 505 write_length, TI_VSEND_TIMEOUT_DEFAULT); 506 if (status) { 507 dev_err(dev, "%s - ERROR %d\n", __func__, status); 508 return status; 509 } 510 511 length -= write_length; 512 start_address += write_length; 513 buffer += write_length; 514 } 515 return status; 516 } 517 518 /* 519 * Examine the UMP DMA registers and LSR 520 * 521 * Check the MSBit of the X and Y DMA byte count registers. 522 * A zero in this bit indicates that the TX DMA buffers are empty 523 * then check the TX Empty bit in the UART. 524 */ 525 static int tx_active(struct edgeport_port *port) 526 { 527 int status; 528 struct out_endpoint_desc_block *oedb; 529 __u8 *lsr; 530 int bytes_left = 0; 531 532 oedb = kmalloc(sizeof(*oedb), GFP_KERNEL); 533 if (!oedb) 534 return -ENOMEM; 535 536 /* 537 * Sigh, that's right, just one byte, as not all platforms can 538 * do DMA from stack 539 */ 540 lsr = kmalloc(1, GFP_KERNEL); 541 if (!lsr) { 542 kfree(oedb); 543 return -ENOMEM; 544 } 545 /* Read the DMA Count Registers */ 546 status = read_ram(port->port->serial->dev, port->dma_address, 547 sizeof(*oedb), (void *)oedb); 548 if (status) 549 goto exit_is_tx_active; 550 551 dev_dbg(&port->port->dev, "%s - XByteCount 0x%X\n", __func__, oedb->XByteCount); 552 553 /* and the LSR */ 554 status = read_ram(port->port->serial->dev, 555 port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr); 556 557 if (status) 558 goto exit_is_tx_active; 559 dev_dbg(&port->port->dev, "%s - LSR = 0x%X\n", __func__, *lsr); 560 561 /* If either buffer has data or we are transmitting then return TRUE */ 562 if ((oedb->XByteCount & 0x80) != 0) 563 bytes_left += 64; 564 565 if ((*lsr & UMP_UART_LSR_TX_MASK) == 0) 566 bytes_left += 1; 567 568 /* We return Not Active if we get any kind of error */ 569 exit_is_tx_active: 570 dev_dbg(&port->port->dev, "%s - return %d\n", __func__, bytes_left); 571 572 kfree(lsr); 573 kfree(oedb); 574 return bytes_left; 575 } 576 577 static int choose_config(struct usb_device *dev) 578 { 579 /* 580 * There may be multiple configurations on this device, in which case 581 * we would need to read and parse all of them to find out which one 582 * we want. However, we just support one config at this point, 583 * configuration # 1, which is Config Descriptor 0. 584 */ 585 586 dev_dbg(&dev->dev, "%s - Number of Interfaces = %d\n", 587 __func__, dev->config->desc.bNumInterfaces); 588 dev_dbg(&dev->dev, "%s - MAX Power = %d\n", 589 __func__, dev->config->desc.bMaxPower * 2); 590 591 if (dev->config->desc.bNumInterfaces != 1) { 592 dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", __func__); 593 return -ENODEV; 594 } 595 596 return 0; 597 } 598 599 static int read_rom(struct edgeport_serial *serial, 600 int start_address, int length, __u8 *buffer) 601 { 602 int status; 603 604 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { 605 status = read_download_mem(serial->serial->dev, 606 start_address, 607 length, 608 serial->TI_I2C_Type, 609 buffer); 610 } else { 611 status = read_boot_mem(serial, start_address, length, 612 buffer); 613 } 614 return status; 615 } 616 617 static int write_rom(struct edgeport_serial *serial, int start_address, 618 int length, __u8 *buffer) 619 { 620 if (serial->product_info.TiMode == TI_MODE_BOOT) 621 return write_boot_mem(serial, start_address, length, 622 buffer); 623 624 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) 625 return write_i2c_mem(serial, start_address, length, 626 serial->TI_I2C_Type, buffer); 627 return -EINVAL; 628 } 629 630 /* Read a descriptor header from I2C based on type */ 631 static int get_descriptor_addr(struct edgeport_serial *serial, 632 int desc_type, struct ti_i2c_desc *rom_desc) 633 { 634 int start_address; 635 int status; 636 637 /* Search for requested descriptor in I2C */ 638 start_address = 2; 639 do { 640 status = read_rom(serial, 641 start_address, 642 sizeof(struct ti_i2c_desc), 643 (__u8 *)rom_desc); 644 if (status) 645 return 0; 646 647 if (rom_desc->Type == desc_type) 648 return start_address; 649 650 start_address = start_address + sizeof(struct ti_i2c_desc) + 651 le16_to_cpu(rom_desc->Size); 652 653 } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type); 654 655 return 0; 656 } 657 658 /* Validate descriptor checksum */ 659 static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer) 660 { 661 __u16 i; 662 __u8 cs = 0; 663 664 for (i = 0; i < le16_to_cpu(rom_desc->Size); i++) 665 cs = (__u8)(cs + buffer[i]); 666 667 if (cs != rom_desc->CheckSum) { 668 pr_debug("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs); 669 return -EINVAL; 670 } 671 return 0; 672 } 673 674 /* Make sure that the I2C image is good */ 675 static int check_i2c_image(struct edgeport_serial *serial) 676 { 677 struct device *dev = &serial->serial->dev->dev; 678 int status = 0; 679 struct ti_i2c_desc *rom_desc; 680 int start_address = 2; 681 __u8 *buffer; 682 __u16 ttype; 683 684 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 685 if (!rom_desc) 686 return -ENOMEM; 687 688 buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL); 689 if (!buffer) { 690 kfree(rom_desc); 691 return -ENOMEM; 692 } 693 694 /* Read the first byte (Signature0) must be 0x52 or 0x10 */ 695 status = read_rom(serial, 0, 1, buffer); 696 if (status) 697 goto out; 698 699 if (*buffer != UMP5152 && *buffer != UMP3410) { 700 dev_err(dev, "%s - invalid buffer signature\n", __func__); 701 status = -ENODEV; 702 goto out; 703 } 704 705 do { 706 /* Validate the I2C */ 707 status = read_rom(serial, 708 start_address, 709 sizeof(struct ti_i2c_desc), 710 (__u8 *)rom_desc); 711 if (status) 712 break; 713 714 if ((start_address + sizeof(struct ti_i2c_desc) + 715 le16_to_cpu(rom_desc->Size)) > TI_MAX_I2C_SIZE) { 716 status = -ENODEV; 717 dev_dbg(dev, "%s - structure too big, erroring out.\n", __func__); 718 break; 719 } 720 721 dev_dbg(dev, "%s Type = 0x%x\n", __func__, rom_desc->Type); 722 723 /* Skip type 2 record */ 724 ttype = rom_desc->Type & 0x0f; 725 if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC 726 && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) { 727 /* Read the descriptor data */ 728 status = read_rom(serial, start_address + 729 sizeof(struct ti_i2c_desc), 730 le16_to_cpu(rom_desc->Size), 731 buffer); 732 if (status) 733 break; 734 735 status = valid_csum(rom_desc, buffer); 736 if (status) 737 break; 738 } 739 start_address = start_address + sizeof(struct ti_i2c_desc) + 740 le16_to_cpu(rom_desc->Size); 741 742 } while ((rom_desc->Type != I2C_DESC_TYPE_ION) && 743 (start_address < TI_MAX_I2C_SIZE)); 744 745 if ((rom_desc->Type != I2C_DESC_TYPE_ION) || 746 (start_address > TI_MAX_I2C_SIZE)) 747 status = -ENODEV; 748 749 out: 750 kfree(buffer); 751 kfree(rom_desc); 752 return status; 753 } 754 755 static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer) 756 { 757 int status; 758 int start_address; 759 struct ti_i2c_desc *rom_desc; 760 struct edge_ti_manuf_descriptor *desc; 761 struct device *dev = &serial->serial->dev->dev; 762 763 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 764 if (!rom_desc) 765 return -ENOMEM; 766 767 start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION, 768 rom_desc); 769 770 if (!start_address) { 771 dev_dbg(dev, "%s - Edge Descriptor not found in I2C\n", __func__); 772 status = -ENODEV; 773 goto exit; 774 } 775 776 /* Read the descriptor data */ 777 status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc), 778 le16_to_cpu(rom_desc->Size), buffer); 779 if (status) 780 goto exit; 781 782 status = valid_csum(rom_desc, buffer); 783 784 desc = (struct edge_ti_manuf_descriptor *)buffer; 785 dev_dbg(dev, "%s - IonConfig 0x%x\n", __func__, desc->IonConfig); 786 dev_dbg(dev, "%s - Version %d\n", __func__, desc->Version); 787 dev_dbg(dev, "%s - Cpu/Board 0x%x\n", __func__, desc->CpuRev_BoardRev); 788 dev_dbg(dev, "%s - NumPorts %d\n", __func__, desc->NumPorts); 789 dev_dbg(dev, "%s - NumVirtualPorts %d\n", __func__, desc->NumVirtualPorts); 790 dev_dbg(dev, "%s - TotalPorts %d\n", __func__, desc->TotalPorts); 791 792 exit: 793 kfree(rom_desc); 794 return status; 795 } 796 797 /* Build firmware header used for firmware update */ 798 static int build_i2c_fw_hdr(u8 *header, const struct firmware *fw) 799 { 800 __u8 *buffer; 801 int buffer_size; 802 int i; 803 __u8 cs = 0; 804 struct ti_i2c_desc *i2c_header; 805 struct ti_i2c_image_header *img_header; 806 struct ti_i2c_firmware_rec *firmware_rec; 807 struct edgeport_fw_hdr *fw_hdr = (struct edgeport_fw_hdr *)fw->data; 808 809 /* 810 * In order to update the I2C firmware we must change the type 2 record 811 * to type 0xF2. This will force the UMP to come up in Boot Mode. 812 * Then while in boot mode, the driver will download the latest 813 * firmware (padded to 15.5k) into the UMP ram. And finally when the 814 * device comes back up in download mode the driver will cause the new 815 * firmware to be copied from the UMP Ram to I2C and the firmware will 816 * update the record type from 0xf2 to 0x02. 817 */ 818 819 /* 820 * Allocate a 15.5k buffer + 2 bytes for version number (Firmware 821 * Record) 822 */ 823 buffer_size = (((1024 * 16) - 512 ) + 824 sizeof(struct ti_i2c_firmware_rec)); 825 826 buffer = kmalloc(buffer_size, GFP_KERNEL); 827 if (!buffer) 828 return -ENOMEM; 829 830 /* Set entire image of 0xffs */ 831 memset(buffer, 0xff, buffer_size); 832 833 /* Copy version number into firmware record */ 834 firmware_rec = (struct ti_i2c_firmware_rec *)buffer; 835 836 firmware_rec->Ver_Major = fw_hdr->major_version; 837 firmware_rec->Ver_Minor = fw_hdr->minor_version; 838 839 /* Pointer to fw_down memory image */ 840 img_header = (struct ti_i2c_image_header *)&fw->data[4]; 841 842 memcpy(buffer + sizeof(struct ti_i2c_firmware_rec), 843 &fw->data[4 + sizeof(struct ti_i2c_image_header)], 844 le16_to_cpu(img_header->Length)); 845 846 for (i=0; i < buffer_size; i++) { 847 cs = (__u8)(cs + buffer[i]); 848 } 849 850 kfree(buffer); 851 852 /* Build new header */ 853 i2c_header = (struct ti_i2c_desc *)header; 854 firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data; 855 856 i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK; 857 i2c_header->Size = cpu_to_le16(buffer_size); 858 i2c_header->CheckSum = cs; 859 firmware_rec->Ver_Major = fw_hdr->major_version; 860 firmware_rec->Ver_Minor = fw_hdr->minor_version; 861 862 return 0; 863 } 864 865 /* Try to figure out what type of I2c we have */ 866 static int i2c_type_bootmode(struct edgeport_serial *serial) 867 { 868 struct device *dev = &serial->serial->dev->dev; 869 int status; 870 u8 *data; 871 872 data = kmalloc(1, GFP_KERNEL); 873 if (!data) 874 return -ENOMEM; 875 876 /* Try to read type 2 */ 877 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, 878 DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01); 879 if (status) 880 dev_dbg(dev, "%s - read 2 status error = %d\n", __func__, status); 881 else 882 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data); 883 if ((!status) && (*data == UMP5152 || *data == UMP3410)) { 884 dev_dbg(dev, "%s - ROM_TYPE_II\n", __func__); 885 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 886 goto out; 887 } 888 889 /* Try to read type 3 */ 890 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, 891 DTK_ADDR_SPACE_I2C_TYPE_III, 0, data, 0x01); 892 if (status) 893 dev_dbg(dev, "%s - read 3 status error = %d\n", __func__, status); 894 else 895 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data); 896 if ((!status) && (*data == UMP5152 || *data == UMP3410)) { 897 dev_dbg(dev, "%s - ROM_TYPE_III\n", __func__); 898 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III; 899 goto out; 900 } 901 902 dev_dbg(dev, "%s - Unknown\n", __func__); 903 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 904 status = -ENODEV; 905 out: 906 kfree(data); 907 return status; 908 } 909 910 static int bulk_xfer(struct usb_serial *serial, void *buffer, 911 int length, int *num_sent) 912 { 913 int status; 914 915 status = usb_bulk_msg(serial->dev, 916 usb_sndbulkpipe(serial->dev, 917 serial->port[0]->bulk_out_endpointAddress), 918 buffer, length, num_sent, 1000); 919 return status; 920 } 921 922 /* Download given firmware image to the device (IN BOOT MODE) */ 923 static int download_code(struct edgeport_serial *serial, __u8 *image, 924 int image_length) 925 { 926 int status = 0; 927 int pos; 928 int transfer; 929 int done; 930 931 /* Transfer firmware image */ 932 for (pos = 0; pos < image_length; ) { 933 /* Read the next buffer from file */ 934 transfer = image_length - pos; 935 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE) 936 transfer = EDGE_FW_BULK_MAX_PACKET_SIZE; 937 938 /* Transfer data */ 939 status = bulk_xfer(serial->serial, &image[pos], 940 transfer, &done); 941 if (status) 942 break; 943 /* Advance buffer pointer */ 944 pos += done; 945 } 946 947 return status; 948 } 949 950 /* FIXME!!! */ 951 static int config_boot_dev(struct usb_device *dev) 952 { 953 return 0; 954 } 955 956 static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc) 957 { 958 return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev); 959 } 960 961 static int check_fw_sanity(struct edgeport_serial *serial, 962 const struct firmware *fw) 963 { 964 u16 length_total; 965 u8 checksum = 0; 966 int pos; 967 struct device *dev = &serial->serial->interface->dev; 968 struct edgeport_fw_hdr *fw_hdr = (struct edgeport_fw_hdr *)fw->data; 969 970 if (fw->size < sizeof(struct edgeport_fw_hdr)) { 971 dev_err(dev, "incomplete fw header\n"); 972 return -EINVAL; 973 } 974 975 length_total = le16_to_cpu(fw_hdr->length) + 976 sizeof(struct edgeport_fw_hdr); 977 978 if (fw->size != length_total) { 979 dev_err(dev, "bad fw size (expected: %u, got: %zu)\n", 980 length_total, fw->size); 981 return -EINVAL; 982 } 983 984 for (pos = sizeof(struct edgeport_fw_hdr); pos < fw->size; ++pos) 985 checksum += fw->data[pos]; 986 987 if (checksum != fw_hdr->checksum) { 988 dev_err(dev, "bad fw checksum (expected: 0x%x, got: 0x%x)\n", 989 fw_hdr->checksum, checksum); 990 return -EINVAL; 991 } 992 993 return 0; 994 } 995 996 /* 997 * DownloadTIFirmware - Download run-time operating firmware to the TI5052 998 * 999 * This routine downloads the main operating code into the TI5052, using the 1000 * boot code already burned into E2PROM or ROM. 1001 */ 1002 static int download_fw(struct edgeport_serial *serial) 1003 { 1004 struct device *dev = &serial->serial->interface->dev; 1005 int status = 0; 1006 struct usb_interface_descriptor *interface; 1007 const struct firmware *fw; 1008 const char *fw_name = "edgeport/down3.bin"; 1009 struct edgeport_fw_hdr *fw_hdr; 1010 1011 status = request_firmware(&fw, fw_name, dev); 1012 if (status) { 1013 dev_err(dev, "Failed to load image \"%s\" err %d\n", 1014 fw_name, status); 1015 return status; 1016 } 1017 1018 if (check_fw_sanity(serial, fw)) { 1019 status = -EINVAL; 1020 goto out; 1021 } 1022 1023 fw_hdr = (struct edgeport_fw_hdr *)fw->data; 1024 1025 /* If on-board version is newer, "fw_version" will be updated later. */ 1026 serial->fw_version = (fw_hdr->major_version << 8) + 1027 fw_hdr->minor_version; 1028 1029 /* 1030 * This routine is entered by both the BOOT mode and the Download mode 1031 * We can determine which code is running by the reading the config 1032 * descriptor and if we have only one bulk pipe it is in boot mode 1033 */ 1034 serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP; 1035 1036 /* Default to type 2 i2c */ 1037 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 1038 1039 status = choose_config(serial->serial->dev); 1040 if (status) 1041 goto out; 1042 1043 interface = &serial->serial->interface->cur_altsetting->desc; 1044 if (!interface) { 1045 dev_err(dev, "%s - no interface set, error!\n", __func__); 1046 status = -ENODEV; 1047 goto out; 1048 } 1049 1050 /* 1051 * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING 1052 * if we have more than one endpoint we are definitely in download 1053 * mode 1054 */ 1055 if (interface->bNumEndpoints > 1) { 1056 serial->product_info.TiMode = TI_MODE_DOWNLOAD; 1057 status = do_download_mode(serial, fw); 1058 } else { 1059 /* Otherwise we will remain in configuring mode */ 1060 serial->product_info.TiMode = TI_MODE_CONFIGURING; 1061 status = do_boot_mode(serial, fw); 1062 } 1063 1064 out: 1065 release_firmware(fw); 1066 return status; 1067 } 1068 1069 static int do_download_mode(struct edgeport_serial *serial, 1070 const struct firmware *fw) 1071 { 1072 struct device *dev = &serial->serial->interface->dev; 1073 int status = 0; 1074 int start_address; 1075 struct edge_ti_manuf_descriptor *ti_manuf_desc; 1076 int download_cur_ver; 1077 int download_new_ver; 1078 struct edgeport_fw_hdr *fw_hdr = (struct edgeport_fw_hdr *)fw->data; 1079 struct ti_i2c_desc *rom_desc; 1080 1081 dev_dbg(dev, "%s - RUNNING IN DOWNLOAD MODE\n", __func__); 1082 1083 status = check_i2c_image(serial); 1084 if (status) { 1085 dev_dbg(dev, "%s - DOWNLOAD MODE -- BAD I2C\n", __func__); 1086 return status; 1087 } 1088 1089 /* 1090 * Validate Hardware version number 1091 * Read Manufacturing Descriptor from TI Based Edgeport 1092 */ 1093 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL); 1094 if (!ti_manuf_desc) 1095 return -ENOMEM; 1096 1097 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc); 1098 if (status) { 1099 kfree(ti_manuf_desc); 1100 return status; 1101 } 1102 1103 /* Check version number of ION descriptor */ 1104 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { 1105 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n", 1106 __func__, ti_cpu_rev(ti_manuf_desc)); 1107 kfree(ti_manuf_desc); 1108 return -EINVAL; 1109 } 1110 1111 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 1112 if (!rom_desc) { 1113 kfree(ti_manuf_desc); 1114 return -ENOMEM; 1115 } 1116 1117 /* Search for type 2 record (firmware record) */ 1118 start_address = get_descriptor_addr(serial, 1119 I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc); 1120 if (start_address != 0) { 1121 struct ti_i2c_firmware_rec *firmware_version; 1122 u8 *record; 1123 1124 dev_dbg(dev, "%s - Found Type FIRMWARE (Type 2) record\n", 1125 __func__); 1126 1127 firmware_version = kmalloc(sizeof(*firmware_version), 1128 GFP_KERNEL); 1129 if (!firmware_version) { 1130 kfree(rom_desc); 1131 kfree(ti_manuf_desc); 1132 return -ENOMEM; 1133 } 1134 1135 /* 1136 * Validate version number 1137 * Read the descriptor data 1138 */ 1139 status = read_rom(serial, start_address + 1140 sizeof(struct ti_i2c_desc), 1141 sizeof(struct ti_i2c_firmware_rec), 1142 (__u8 *)firmware_version); 1143 if (status) { 1144 kfree(firmware_version); 1145 kfree(rom_desc); 1146 kfree(ti_manuf_desc); 1147 return status; 1148 } 1149 1150 /* 1151 * Check version number of download with current 1152 * version in I2c 1153 */ 1154 download_cur_ver = (firmware_version->Ver_Major << 8) + 1155 (firmware_version->Ver_Minor); 1156 download_new_ver = (fw_hdr->major_version << 8) + 1157 (fw_hdr->minor_version); 1158 1159 dev_dbg(dev, "%s - >> FW Versions Device %d.%d Driver %d.%d\n", 1160 __func__, firmware_version->Ver_Major, 1161 firmware_version->Ver_Minor, 1162 fw_hdr->major_version, fw_hdr->minor_version); 1163 1164 /* 1165 * Check if we have an old version in the I2C and 1166 * update if necessary 1167 */ 1168 if (download_cur_ver < download_new_ver) { 1169 dev_dbg(dev, "%s - Update I2C dld from %d.%d to %d.%d\n", 1170 __func__, 1171 firmware_version->Ver_Major, 1172 firmware_version->Ver_Minor, 1173 fw_hdr->major_version, 1174 fw_hdr->minor_version); 1175 1176 record = kmalloc(1, GFP_KERNEL); 1177 if (!record) { 1178 kfree(firmware_version); 1179 kfree(rom_desc); 1180 kfree(ti_manuf_desc); 1181 return -ENOMEM; 1182 } 1183 /* 1184 * In order to update the I2C firmware we must 1185 * change the type 2 record to type 0xF2. This 1186 * will force the UMP to come up in Boot Mode. 1187 * Then while in boot mode, the driver will 1188 * download the latest firmware (padded to 1189 * 15.5k) into the UMP ram. Finally when the 1190 * device comes back up in download mode the 1191 * driver will cause the new firmware to be 1192 * copied from the UMP Ram to I2C and the 1193 * firmware will update the record type from 1194 * 0xf2 to 0x02. 1195 */ 1196 *record = I2C_DESC_TYPE_FIRMWARE_BLANK; 1197 1198 /* 1199 * Change the I2C Firmware record type to 1200 * 0xf2 to trigger an update 1201 */ 1202 status = write_rom(serial, start_address, 1203 sizeof(*record), record); 1204 if (status) { 1205 kfree(record); 1206 kfree(firmware_version); 1207 kfree(rom_desc); 1208 kfree(ti_manuf_desc); 1209 return status; 1210 } 1211 1212 /* 1213 * verify the write -- must do this in order 1214 * for write to complete before we do the 1215 * hardware reset 1216 */ 1217 status = read_rom(serial, 1218 start_address, 1219 sizeof(*record), 1220 record); 1221 if (status) { 1222 kfree(record); 1223 kfree(firmware_version); 1224 kfree(rom_desc); 1225 kfree(ti_manuf_desc); 1226 return status; 1227 } 1228 1229 if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) { 1230 dev_err(dev, "%s - error resetting device\n", 1231 __func__); 1232 kfree(record); 1233 kfree(firmware_version); 1234 kfree(rom_desc); 1235 kfree(ti_manuf_desc); 1236 return -ENODEV; 1237 } 1238 1239 dev_dbg(dev, "%s - HARDWARE RESET\n", __func__); 1240 1241 /* Reset UMP -- Back to BOOT MODE */ 1242 status = ti_vsend_sync(serial->serial->dev, 1243 UMPC_HARDWARE_RESET, 1244 0, 0, NULL, 0, 1245 TI_VSEND_TIMEOUT_DEFAULT); 1246 1247 dev_dbg(dev, "%s - HARDWARE RESET return %d\n", 1248 __func__, status); 1249 1250 /* return an error on purpose. */ 1251 kfree(record); 1252 kfree(firmware_version); 1253 kfree(rom_desc); 1254 kfree(ti_manuf_desc); 1255 return -ENODEV; 1256 } 1257 /* Same or newer fw version is already loaded */ 1258 serial->fw_version = download_cur_ver; 1259 kfree(firmware_version); 1260 } 1261 /* Search for type 0xF2 record (firmware blank record) */ 1262 else { 1263 start_address = get_descriptor_addr(serial, 1264 I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc); 1265 if (start_address != 0) { 1266 #define HEADER_SIZE (sizeof(struct ti_i2c_desc) + \ 1267 sizeof(struct ti_i2c_firmware_rec)) 1268 __u8 *header; 1269 __u8 *vheader; 1270 1271 header = kmalloc(HEADER_SIZE, GFP_KERNEL); 1272 if (!header) { 1273 kfree(rom_desc); 1274 kfree(ti_manuf_desc); 1275 return -ENOMEM; 1276 } 1277 1278 vheader = kmalloc(HEADER_SIZE, GFP_KERNEL); 1279 if (!vheader) { 1280 kfree(header); 1281 kfree(rom_desc); 1282 kfree(ti_manuf_desc); 1283 return -ENOMEM; 1284 } 1285 1286 dev_dbg(dev, "%s - Found Type BLANK FIRMWARE (Type F2) record\n", 1287 __func__); 1288 1289 /* 1290 * In order to update the I2C firmware we must change 1291 * the type 2 record to type 0xF2. This will force the 1292 * UMP to come up in Boot Mode. Then while in boot 1293 * mode, the driver will download the latest firmware 1294 * (padded to 15.5k) into the UMP ram. Finally when the 1295 * device comes back up in download mode the driver 1296 * will cause the new firmware to be copied from the 1297 * UMP Ram to I2C and the firmware will update the 1298 * record type from 0xf2 to 0x02. 1299 */ 1300 status = build_i2c_fw_hdr(header, fw); 1301 if (status) { 1302 kfree(vheader); 1303 kfree(header); 1304 kfree(rom_desc); 1305 kfree(ti_manuf_desc); 1306 return -EINVAL; 1307 } 1308 1309 /* 1310 * Update I2C with type 0xf2 record with correct 1311 * size and checksum 1312 */ 1313 status = write_rom(serial, 1314 start_address, 1315 HEADER_SIZE, 1316 header); 1317 if (status) { 1318 kfree(vheader); 1319 kfree(header); 1320 kfree(rom_desc); 1321 kfree(ti_manuf_desc); 1322 return -EINVAL; 1323 } 1324 1325 /* 1326 * verify the write -- must do this in order for 1327 * write to complete before we do the hardware reset 1328 */ 1329 status = read_rom(serial, start_address, 1330 HEADER_SIZE, vheader); 1331 1332 if (status) { 1333 dev_dbg(dev, "%s - can't read header back\n", 1334 __func__); 1335 kfree(vheader); 1336 kfree(header); 1337 kfree(rom_desc); 1338 kfree(ti_manuf_desc); 1339 return status; 1340 } 1341 if (memcmp(vheader, header, HEADER_SIZE)) { 1342 dev_dbg(dev, "%s - write download record failed\n", 1343 __func__); 1344 kfree(vheader); 1345 kfree(header); 1346 kfree(rom_desc); 1347 kfree(ti_manuf_desc); 1348 return -EINVAL; 1349 } 1350 1351 kfree(vheader); 1352 kfree(header); 1353 1354 dev_dbg(dev, "%s - Start firmware update\n", __func__); 1355 1356 /* Tell firmware to copy download image into I2C */ 1357 status = ti_vsend_sync(serial->serial->dev, 1358 UMPC_COPY_DNLD_TO_I2C, 1359 0, 0, NULL, 0, 1360 TI_VSEND_TIMEOUT_FW_DOWNLOAD); 1361 1362 dev_dbg(dev, "%s - Update complete 0x%x\n", __func__, 1363 status); 1364 if (status) { 1365 dev_err(dev, 1366 "%s - UMPC_COPY_DNLD_TO_I2C failed\n", 1367 __func__); 1368 kfree(rom_desc); 1369 kfree(ti_manuf_desc); 1370 return status; 1371 } 1372 } 1373 } 1374 1375 /* The device is running the download code */ 1376 kfree(rom_desc); 1377 kfree(ti_manuf_desc); 1378 return 0; 1379 } 1380 1381 static int do_boot_mode(struct edgeport_serial *serial, 1382 const struct firmware *fw) 1383 { 1384 struct device *dev = &serial->serial->interface->dev; 1385 int status = 0; 1386 struct edge_ti_manuf_descriptor *ti_manuf_desc; 1387 struct edgeport_fw_hdr *fw_hdr = (struct edgeport_fw_hdr *)fw->data; 1388 1389 dev_dbg(dev, "%s - RUNNING IN BOOT MODE\n", __func__); 1390 1391 /* Configure the TI device so we can use the BULK pipes for download */ 1392 status = config_boot_dev(serial->serial->dev); 1393 if (status) 1394 return status; 1395 1396 if (le16_to_cpu(serial->serial->dev->descriptor.idVendor) 1397 != USB_VENDOR_ID_ION) { 1398 dev_dbg(dev, "%s - VID = 0x%x\n", __func__, 1399 le16_to_cpu(serial->serial->dev->descriptor.idVendor)); 1400 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 1401 goto stayinbootmode; 1402 } 1403 1404 /* 1405 * We have an ION device (I2c Must be programmed) 1406 * Determine I2C image type 1407 */ 1408 if (i2c_type_bootmode(serial)) 1409 goto stayinbootmode; 1410 1411 /* Check for ION Vendor ID and that the I2C is valid */ 1412 if (!check_i2c_image(serial)) { 1413 struct ti_i2c_image_header *header; 1414 int i; 1415 __u8 cs = 0; 1416 __u8 *buffer; 1417 int buffer_size; 1418 1419 /* 1420 * Validate Hardware version number 1421 * Read Manufacturing Descriptor from TI Based Edgeport 1422 */ 1423 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL); 1424 if (!ti_manuf_desc) 1425 return -ENOMEM; 1426 1427 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc); 1428 if (status) { 1429 kfree(ti_manuf_desc); 1430 goto stayinbootmode; 1431 } 1432 1433 /* Check for version 2 */ 1434 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { 1435 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n", 1436 __func__, ti_cpu_rev(ti_manuf_desc)); 1437 kfree(ti_manuf_desc); 1438 goto stayinbootmode; 1439 } 1440 1441 kfree(ti_manuf_desc); 1442 1443 /* 1444 * In order to update the I2C firmware we must change the type 1445 * 2 record to type 0xF2. This will force the UMP to come up 1446 * in Boot Mode. Then while in boot mode, the driver will 1447 * download the latest firmware (padded to 15.5k) into the 1448 * UMP ram. Finally when the device comes back up in download 1449 * mode the driver will cause the new firmware to be copied 1450 * from the UMP Ram to I2C and the firmware will update the 1451 * record type from 0xf2 to 0x02. 1452 * 1453 * Do we really have to copy the whole firmware image, 1454 * or could we do this in place! 1455 */ 1456 1457 /* Allocate a 15.5k buffer + 3 byte header */ 1458 buffer_size = (((1024 * 16) - 512) + 1459 sizeof(struct ti_i2c_image_header)); 1460 buffer = kmalloc(buffer_size, GFP_KERNEL); 1461 if (!buffer) 1462 return -ENOMEM; 1463 1464 /* Initialize the buffer to 0xff (pad the buffer) */ 1465 memset(buffer, 0xff, buffer_size); 1466 memcpy(buffer, &fw->data[4], fw->size - 4); 1467 1468 for (i = sizeof(struct ti_i2c_image_header); 1469 i < buffer_size; i++) { 1470 cs = (__u8)(cs + buffer[i]); 1471 } 1472 1473 header = (struct ti_i2c_image_header *)buffer; 1474 1475 /* update length and checksum after padding */ 1476 header->Length = cpu_to_le16((__u16)(buffer_size - 1477 sizeof(struct ti_i2c_image_header))); 1478 header->CheckSum = cs; 1479 1480 /* Download the operational code */ 1481 dev_dbg(dev, "%s - Downloading operational code image version %d.%d (TI UMP)\n", 1482 __func__, 1483 fw_hdr->major_version, fw_hdr->minor_version); 1484 status = download_code(serial, buffer, buffer_size); 1485 1486 kfree(buffer); 1487 1488 if (status) { 1489 dev_dbg(dev, "%s - Error downloading operational code image\n", __func__); 1490 return status; 1491 } 1492 1493 /* Device will reboot */ 1494 serial->product_info.TiMode = TI_MODE_TRANSITIONING; 1495 1496 dev_dbg(dev, "%s - Download successful -- Device rebooting...\n", __func__); 1497 1498 return 1; 1499 } 1500 1501 stayinbootmode: 1502 /* Eprom is invalid or blank stay in boot mode */ 1503 dev_dbg(dev, "%s - STAYING IN BOOT MODE\n", __func__); 1504 serial->product_info.TiMode = TI_MODE_BOOT; 1505 1506 return 1; 1507 } 1508 1509 static int ti_do_config(struct edgeport_port *port, int feature, int on) 1510 { 1511 int port_number = port->port->port_number; 1512 1513 on = !!on; /* 1 or 0 not bitmask */ 1514 return send_cmd(port->port->serial->dev, 1515 feature, (__u8)(UMPM_UART1_PORT + port_number), 1516 on, NULL, 0); 1517 } 1518 1519 static int restore_mcr(struct edgeport_port *port, __u8 mcr) 1520 { 1521 int status = 0; 1522 1523 dev_dbg(&port->port->dev, "%s - %x\n", __func__, mcr); 1524 1525 status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR); 1526 if (status) 1527 return status; 1528 status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS); 1529 if (status) 1530 return status; 1531 return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK); 1532 } 1533 1534 /* Convert TI LSR to standard UART flags */ 1535 static __u8 map_line_status(__u8 ti_lsr) 1536 { 1537 __u8 lsr = 0; 1538 1539 #define MAP_FLAG(flagUmp, flagUart) \ 1540 if (ti_lsr & flagUmp) \ 1541 lsr |= flagUart; 1542 1543 MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */ 1544 MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */ 1545 MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */ 1546 MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */ 1547 MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* rx data available */ 1548 MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* tx hold reg empty */ 1549 1550 #undef MAP_FLAG 1551 1552 return lsr; 1553 } 1554 1555 static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr) 1556 { 1557 struct async_icount *icount; 1558 struct tty_struct *tty; 1559 1560 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, msr); 1561 1562 if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | 1563 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { 1564 icount = &edge_port->port->icount; 1565 1566 /* update input line counters */ 1567 if (msr & EDGEPORT_MSR_DELTA_CTS) 1568 icount->cts++; 1569 if (msr & EDGEPORT_MSR_DELTA_DSR) 1570 icount->dsr++; 1571 if (msr & EDGEPORT_MSR_DELTA_CD) 1572 icount->dcd++; 1573 if (msr & EDGEPORT_MSR_DELTA_RI) 1574 icount->rng++; 1575 wake_up_interruptible(&edge_port->port->port.delta_msr_wait); 1576 } 1577 1578 /* Save the new modem status */ 1579 edge_port->shadow_msr = msr & 0xf0; 1580 1581 tty = tty_port_tty_get(&edge_port->port->port); 1582 /* handle CTS flow control */ 1583 if (tty && C_CRTSCTS(tty)) { 1584 if (msr & EDGEPORT_MSR_CTS) 1585 tty_wakeup(tty); 1586 } 1587 tty_kref_put(tty); 1588 } 1589 1590 static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data, 1591 __u8 lsr, __u8 data) 1592 { 1593 struct async_icount *icount; 1594 __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR | 1595 LSR_FRM_ERR | LSR_BREAK)); 1596 1597 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, new_lsr); 1598 1599 edge_port->shadow_lsr = lsr; 1600 1601 if (new_lsr & LSR_BREAK) 1602 /* 1603 * Parity and Framing errors only count if they 1604 * occur exclusive of a break being received. 1605 */ 1606 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK); 1607 1608 /* Place LSR data byte into Rx buffer */ 1609 if (lsr_data) 1610 edge_tty_recv(edge_port->port, &data, 1); 1611 1612 /* update input line counters */ 1613 icount = &edge_port->port->icount; 1614 if (new_lsr & LSR_BREAK) 1615 icount->brk++; 1616 if (new_lsr & LSR_OVER_ERR) 1617 icount->overrun++; 1618 if (new_lsr & LSR_PAR_ERR) 1619 icount->parity++; 1620 if (new_lsr & LSR_FRM_ERR) 1621 icount->frame++; 1622 } 1623 1624 static void edge_interrupt_callback(struct urb *urb) 1625 { 1626 struct edgeport_serial *edge_serial = urb->context; 1627 struct usb_serial_port *port; 1628 struct edgeport_port *edge_port; 1629 struct device *dev; 1630 unsigned char *data = urb->transfer_buffer; 1631 int length = urb->actual_length; 1632 int port_number; 1633 int function; 1634 int retval; 1635 __u8 lsr; 1636 __u8 msr; 1637 int status = urb->status; 1638 1639 switch (status) { 1640 case 0: 1641 /* success */ 1642 break; 1643 case -ECONNRESET: 1644 case -ENOENT: 1645 case -ESHUTDOWN: 1646 /* this urb is terminated, clean up */ 1647 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", 1648 __func__, status); 1649 return; 1650 default: 1651 dev_err(&urb->dev->dev, "%s - nonzero urb status received: " 1652 "%d\n", __func__, status); 1653 goto exit; 1654 } 1655 1656 if (!length) { 1657 dev_dbg(&urb->dev->dev, "%s - no data in urb\n", __func__); 1658 goto exit; 1659 } 1660 1661 dev = &edge_serial->serial->dev->dev; 1662 usb_serial_debug_data(dev, __func__, length, data); 1663 1664 if (length != 2) { 1665 dev_dbg(dev, "%s - expecting packet of size 2, got %d\n", __func__, length); 1666 goto exit; 1667 } 1668 1669 port_number = TIUMP_GET_PORT_FROM_CODE(data[0]); 1670 function = TIUMP_GET_FUNC_FROM_CODE(data[0]); 1671 dev_dbg(dev, "%s - port_number %d, function %d, info 0x%x\n", __func__, 1672 port_number, function, data[1]); 1673 1674 if (port_number >= edge_serial->serial->num_ports) { 1675 dev_err(dev, "bad port number %d\n", port_number); 1676 goto exit; 1677 } 1678 1679 port = edge_serial->serial->port[port_number]; 1680 edge_port = usb_get_serial_port_data(port); 1681 if (!edge_port) { 1682 dev_dbg(dev, "%s - edge_port not found\n", __func__); 1683 return; 1684 } 1685 switch (function) { 1686 case TIUMP_INTERRUPT_CODE_LSR: 1687 lsr = map_line_status(data[1]); 1688 if (lsr & UMP_UART_LSR_DATA_MASK) { 1689 /* 1690 * Save the LSR event for bulk read completion routine 1691 */ 1692 dev_dbg(dev, "%s - LSR Event Port %u LSR Status = %02x\n", 1693 __func__, port_number, lsr); 1694 edge_port->lsr_event = 1; 1695 edge_port->lsr_mask = lsr; 1696 } else { 1697 dev_dbg(dev, "%s - ===== Port %d LSR Status = %02x ======\n", 1698 __func__, port_number, lsr); 1699 handle_new_lsr(edge_port, 0, lsr, 0); 1700 } 1701 break; 1702 1703 case TIUMP_INTERRUPT_CODE_MSR: /* MSR */ 1704 /* Copy MSR from UMP */ 1705 msr = data[1]; 1706 dev_dbg(dev, "%s - ===== Port %u MSR Status = %02x ======\n", 1707 __func__, port_number, msr); 1708 handle_new_msr(edge_port, msr); 1709 break; 1710 1711 default: 1712 dev_err(&urb->dev->dev, 1713 "%s - Unknown Interrupt code from UMP %x\n", 1714 __func__, data[1]); 1715 break; 1716 1717 } 1718 1719 exit: 1720 retval = usb_submit_urb(urb, GFP_ATOMIC); 1721 if (retval) 1722 dev_err(&urb->dev->dev, 1723 "%s - usb_submit_urb failed with result %d\n", 1724 __func__, retval); 1725 } 1726 1727 static void edge_bulk_in_callback(struct urb *urb) 1728 { 1729 struct edgeport_port *edge_port = urb->context; 1730 struct device *dev = &edge_port->port->dev; 1731 unsigned char *data = urb->transfer_buffer; 1732 unsigned long flags; 1733 int retval = 0; 1734 int port_number; 1735 int status = urb->status; 1736 1737 switch (status) { 1738 case 0: 1739 /* success */ 1740 break; 1741 case -ECONNRESET: 1742 case -ENOENT: 1743 case -ESHUTDOWN: 1744 /* this urb is terminated, clean up */ 1745 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status); 1746 return; 1747 default: 1748 dev_err(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", __func__, status); 1749 } 1750 1751 if (status == -EPIPE) 1752 goto exit; 1753 1754 if (status) { 1755 dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__); 1756 return; 1757 } 1758 1759 port_number = edge_port->port->port_number; 1760 1761 if (urb->actual_length > 0 && edge_port->lsr_event) { 1762 edge_port->lsr_event = 0; 1763 dev_dbg(dev, "%s ===== Port %u LSR Status = %02x, Data = %02x ======\n", 1764 __func__, port_number, edge_port->lsr_mask, *data); 1765 handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data); 1766 /* Adjust buffer length/pointer */ 1767 --urb->actual_length; 1768 ++data; 1769 } 1770 1771 if (urb->actual_length) { 1772 usb_serial_debug_data(dev, __func__, urb->actual_length, data); 1773 if (edge_port->close_pending) 1774 dev_dbg(dev, "%s - close pending, dropping data on the floor\n", 1775 __func__); 1776 else 1777 edge_tty_recv(edge_port->port, data, 1778 urb->actual_length); 1779 edge_port->port->icount.rx += urb->actual_length; 1780 } 1781 1782 exit: 1783 /* continue read unless stopped */ 1784 spin_lock_irqsave(&edge_port->ep_lock, flags); 1785 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) 1786 retval = usb_submit_urb(urb, GFP_ATOMIC); 1787 else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING) 1788 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED; 1789 1790 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1791 if (retval) 1792 dev_err(dev, "%s - usb_submit_urb failed with result %d\n", __func__, retval); 1793 } 1794 1795 static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, 1796 int length) 1797 { 1798 int queued; 1799 1800 queued = tty_insert_flip_string(&port->port, data, length); 1801 if (queued < length) 1802 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n", 1803 __func__, length - queued); 1804 tty_flip_buffer_push(&port->port); 1805 } 1806 1807 static void edge_bulk_out_callback(struct urb *urb) 1808 { 1809 struct usb_serial_port *port = urb->context; 1810 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1811 int status = urb->status; 1812 struct tty_struct *tty; 1813 1814 edge_port->ep_write_urb_in_use = 0; 1815 1816 switch (status) { 1817 case 0: 1818 /* success */ 1819 break; 1820 case -ECONNRESET: 1821 case -ENOENT: 1822 case -ESHUTDOWN: 1823 /* this urb is terminated, clean up */ 1824 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", 1825 __func__, status); 1826 return; 1827 default: 1828 dev_err_console(port, "%s - nonzero write bulk status " 1829 "received: %d\n", __func__, status); 1830 } 1831 1832 /* send any buffered data */ 1833 tty = tty_port_tty_get(&port->port); 1834 edge_send(port, tty); 1835 tty_kref_put(tty); 1836 } 1837 1838 static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) 1839 { 1840 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1841 struct edgeport_serial *edge_serial; 1842 struct usb_device *dev; 1843 struct urb *urb; 1844 int port_number; 1845 int status; 1846 u16 open_settings; 1847 u8 transaction_timeout; 1848 1849 if (edge_port == NULL) 1850 return -ENODEV; 1851 1852 port_number = port->port_number; 1853 1854 dev = port->serial->dev; 1855 1856 /* turn off loopback */ 1857 status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0); 1858 if (status) { 1859 dev_err(&port->dev, 1860 "%s - cannot send clear loopback command, %d\n", 1861 __func__, status); 1862 return status; 1863 } 1864 1865 /* set up the port settings */ 1866 if (tty) 1867 edge_set_termios(tty, port, &tty->termios); 1868 1869 /* open up the port */ 1870 1871 /* milliseconds to timeout for DMA transfer */ 1872 transaction_timeout = 2; 1873 1874 edge_port->ump_read_timeout = 1875 max(20, ((transaction_timeout * 3) / 2)); 1876 1877 /* milliseconds to timeout for DMA transfer */ 1878 open_settings = (u8)(UMP_DMA_MODE_CONTINOUS | 1879 UMP_PIPE_TRANS_TIMEOUT_ENA | 1880 (transaction_timeout << 2)); 1881 1882 dev_dbg(&port->dev, "%s - Sending UMPC_OPEN_PORT\n", __func__); 1883 1884 /* Tell TI to open and start the port */ 1885 status = send_cmd(dev, UMPC_OPEN_PORT, 1886 (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0); 1887 if (status) { 1888 dev_err(&port->dev, "%s - cannot send open command, %d\n", 1889 __func__, status); 1890 return status; 1891 } 1892 1893 /* Start the DMA? */ 1894 status = send_cmd(dev, UMPC_START_PORT, 1895 (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0); 1896 if (status) { 1897 dev_err(&port->dev, "%s - cannot send start DMA command, %d\n", 1898 __func__, status); 1899 return status; 1900 } 1901 1902 /* Clear TX and RX buffers in UMP */ 1903 status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN); 1904 if (status) { 1905 dev_err(&port->dev, 1906 "%s - cannot send clear buffers command, %d\n", 1907 __func__, status); 1908 return status; 1909 } 1910 1911 /* Read Initial MSR */ 1912 status = ti_vread_sync(dev, UMPC_READ_MSR, 0, 1913 (__u16)(UMPM_UART1_PORT + port_number), 1914 &edge_port->shadow_msr, 1); 1915 if (status) { 1916 dev_err(&port->dev, "%s - cannot send read MSR command, %d\n", 1917 __func__, status); 1918 return status; 1919 } 1920 1921 dev_dbg(&port->dev, "ShadowMSR 0x%X\n", edge_port->shadow_msr); 1922 1923 /* Set Initial MCR */ 1924 edge_port->shadow_mcr = MCR_RTS | MCR_DTR; 1925 dev_dbg(&port->dev, "ShadowMCR 0x%X\n", edge_port->shadow_mcr); 1926 1927 edge_serial = edge_port->edge_serial; 1928 if (mutex_lock_interruptible(&edge_serial->es_lock)) 1929 return -ERESTARTSYS; 1930 if (edge_serial->num_ports_open == 0) { 1931 /* we are the first port to open, post the interrupt urb */ 1932 urb = edge_serial->serial->port[0]->interrupt_in_urb; 1933 urb->context = edge_serial; 1934 status = usb_submit_urb(urb, GFP_KERNEL); 1935 if (status) { 1936 dev_err(&port->dev, 1937 "%s - usb_submit_urb failed with value %d\n", 1938 __func__, status); 1939 goto release_es_lock; 1940 } 1941 } 1942 1943 /* 1944 * reset the data toggle on the bulk endpoints to work around bug in 1945 * host controllers where things get out of sync some times 1946 */ 1947 usb_clear_halt(dev, port->write_urb->pipe); 1948 usb_clear_halt(dev, port->read_urb->pipe); 1949 1950 /* start up our bulk read urb */ 1951 urb = port->read_urb; 1952 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; 1953 urb->context = edge_port; 1954 status = usb_submit_urb(urb, GFP_KERNEL); 1955 if (status) { 1956 dev_err(&port->dev, 1957 "%s - read bulk usb_submit_urb failed with value %d\n", 1958 __func__, status); 1959 goto unlink_int_urb; 1960 } 1961 1962 ++edge_serial->num_ports_open; 1963 1964 goto release_es_lock; 1965 1966 unlink_int_urb: 1967 if (edge_port->edge_serial->num_ports_open == 0) 1968 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 1969 release_es_lock: 1970 mutex_unlock(&edge_serial->es_lock); 1971 return status; 1972 } 1973 1974 static void edge_close(struct usb_serial_port *port) 1975 { 1976 struct edgeport_serial *edge_serial; 1977 struct edgeport_port *edge_port; 1978 struct usb_serial *serial = port->serial; 1979 unsigned long flags; 1980 int port_number; 1981 1982 edge_serial = usb_get_serial_data(port->serial); 1983 edge_port = usb_get_serial_port_data(port); 1984 if (edge_serial == NULL || edge_port == NULL) 1985 return; 1986 1987 /* 1988 * The bulkreadcompletion routine will check 1989 * this flag and dump add read data 1990 */ 1991 edge_port->close_pending = 1; 1992 1993 usb_kill_urb(port->read_urb); 1994 usb_kill_urb(port->write_urb); 1995 edge_port->ep_write_urb_in_use = 0; 1996 spin_lock_irqsave(&edge_port->ep_lock, flags); 1997 kfifo_reset_out(&port->write_fifo); 1998 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1999 2000 dev_dbg(&port->dev, "%s - send umpc_close_port\n", __func__); 2001 port_number = port->port_number; 2002 send_cmd(serial->dev, UMPC_CLOSE_PORT, 2003 (__u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0); 2004 2005 mutex_lock(&edge_serial->es_lock); 2006 --edge_port->edge_serial->num_ports_open; 2007 if (edge_port->edge_serial->num_ports_open <= 0) { 2008 /* last port is now closed, let's shut down our interrupt urb */ 2009 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 2010 edge_port->edge_serial->num_ports_open = 0; 2011 } 2012 mutex_unlock(&edge_serial->es_lock); 2013 edge_port->close_pending = 0; 2014 } 2015 2016 static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, 2017 const unsigned char *data, int count) 2018 { 2019 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2020 2021 if (count == 0) { 2022 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__); 2023 return 0; 2024 } 2025 2026 if (edge_port == NULL) 2027 return -ENODEV; 2028 if (edge_port->close_pending == 1) 2029 return -ENODEV; 2030 2031 count = kfifo_in_locked(&port->write_fifo, data, count, 2032 &edge_port->ep_lock); 2033 edge_send(port, tty); 2034 2035 return count; 2036 } 2037 2038 static void edge_send(struct usb_serial_port *port, struct tty_struct *tty) 2039 { 2040 int count, result; 2041 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2042 unsigned long flags; 2043 2044 spin_lock_irqsave(&edge_port->ep_lock, flags); 2045 2046 if (edge_port->ep_write_urb_in_use) { 2047 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2048 return; 2049 } 2050 2051 count = kfifo_out(&port->write_fifo, 2052 port->write_urb->transfer_buffer, 2053 port->bulk_out_size); 2054 2055 if (count == 0) { 2056 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2057 return; 2058 } 2059 2060 edge_port->ep_write_urb_in_use = 1; 2061 2062 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2063 2064 usb_serial_debug_data(&port->dev, __func__, count, port->write_urb->transfer_buffer); 2065 2066 /* set up our urb */ 2067 port->write_urb->transfer_buffer_length = count; 2068 2069 /* send the data out the bulk port */ 2070 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 2071 if (result) { 2072 dev_err_console(port, 2073 "%s - failed submitting write urb, error %d\n", 2074 __func__, result); 2075 edge_port->ep_write_urb_in_use = 0; 2076 /* TODO: reschedule edge_send */ 2077 } else 2078 edge_port->port->icount.tx += count; 2079 2080 /* 2081 * wakeup any process waiting for writes to complete 2082 * there is now more room in the buffer for new writes 2083 */ 2084 if (tty) 2085 tty_wakeup(tty); 2086 } 2087 2088 static int edge_write_room(struct tty_struct *tty) 2089 { 2090 struct usb_serial_port *port = tty->driver_data; 2091 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2092 int room = 0; 2093 unsigned long flags; 2094 2095 if (edge_port == NULL) 2096 return 0; 2097 if (edge_port->close_pending == 1) 2098 return 0; 2099 2100 spin_lock_irqsave(&edge_port->ep_lock, flags); 2101 room = kfifo_avail(&port->write_fifo); 2102 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2103 2104 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room); 2105 return room; 2106 } 2107 2108 static int edge_chars_in_buffer(struct tty_struct *tty) 2109 { 2110 struct usb_serial_port *port = tty->driver_data; 2111 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2112 int chars = 0; 2113 unsigned long flags; 2114 if (edge_port == NULL) 2115 return 0; 2116 2117 spin_lock_irqsave(&edge_port->ep_lock, flags); 2118 chars = kfifo_len(&port->write_fifo); 2119 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2120 2121 dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars); 2122 return chars; 2123 } 2124 2125 static bool edge_tx_empty(struct usb_serial_port *port) 2126 { 2127 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2128 int ret; 2129 2130 ret = tx_active(edge_port); 2131 if (ret > 0) 2132 return false; 2133 2134 return true; 2135 } 2136 2137 static void edge_throttle(struct tty_struct *tty) 2138 { 2139 struct usb_serial_port *port = tty->driver_data; 2140 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2141 int status; 2142 2143 if (edge_port == NULL) 2144 return; 2145 2146 /* if we are implementing XON/XOFF, send the stop character */ 2147 if (I_IXOFF(tty)) { 2148 unsigned char stop_char = STOP_CHAR(tty); 2149 status = edge_write(tty, port, &stop_char, 1); 2150 if (status <= 0) { 2151 dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status); 2152 } 2153 } 2154 2155 /* 2156 * if we are implementing RTS/CTS, stop reads 2157 * and the Edgeport will clear the RTS line 2158 */ 2159 if (C_CRTSCTS(tty)) 2160 stop_read(edge_port); 2161 2162 } 2163 2164 static void edge_unthrottle(struct tty_struct *tty) 2165 { 2166 struct usb_serial_port *port = tty->driver_data; 2167 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2168 int status; 2169 2170 if (edge_port == NULL) 2171 return; 2172 2173 /* if we are implementing XON/XOFF, send the start character */ 2174 if (I_IXOFF(tty)) { 2175 unsigned char start_char = START_CHAR(tty); 2176 status = edge_write(tty, port, &start_char, 1); 2177 if (status <= 0) { 2178 dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status); 2179 } 2180 } 2181 /* 2182 * if we are implementing RTS/CTS, restart reads 2183 * are the Edgeport will assert the RTS line 2184 */ 2185 if (C_CRTSCTS(tty)) { 2186 status = restart_read(edge_port); 2187 if (status) 2188 dev_err(&port->dev, 2189 "%s - read bulk usb_submit_urb failed: %d\n", 2190 __func__, status); 2191 } 2192 2193 } 2194 2195 static void stop_read(struct edgeport_port *edge_port) 2196 { 2197 unsigned long flags; 2198 2199 spin_lock_irqsave(&edge_port->ep_lock, flags); 2200 2201 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) 2202 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING; 2203 edge_port->shadow_mcr &= ~MCR_RTS; 2204 2205 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2206 } 2207 2208 static int restart_read(struct edgeport_port *edge_port) 2209 { 2210 struct urb *urb; 2211 int status = 0; 2212 unsigned long flags; 2213 2214 spin_lock_irqsave(&edge_port->ep_lock, flags); 2215 2216 if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) { 2217 urb = edge_port->port->read_urb; 2218 status = usb_submit_urb(urb, GFP_ATOMIC); 2219 } 2220 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; 2221 edge_port->shadow_mcr |= MCR_RTS; 2222 2223 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2224 2225 return status; 2226 } 2227 2228 static void change_port_settings(struct tty_struct *tty, 2229 struct edgeport_port *edge_port, struct ktermios *old_termios) 2230 { 2231 struct device *dev = &edge_port->port->dev; 2232 struct ump_uart_config *config; 2233 int baud; 2234 unsigned cflag; 2235 int status; 2236 int port_number = edge_port->port->port_number; 2237 2238 config = kmalloc (sizeof (*config), GFP_KERNEL); 2239 if (!config) { 2240 tty->termios = *old_termios; 2241 return; 2242 } 2243 2244 cflag = tty->termios.c_cflag; 2245 2246 config->wFlags = 0; 2247 2248 /* These flags must be set */ 2249 config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT; 2250 config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR; 2251 config->bUartMode = (__u8)(edge_port->bUartMode); 2252 2253 switch (cflag & CSIZE) { 2254 case CS5: 2255 config->bDataBits = UMP_UART_CHAR5BITS; 2256 dev_dbg(dev, "%s - data bits = 5\n", __func__); 2257 break; 2258 case CS6: 2259 config->bDataBits = UMP_UART_CHAR6BITS; 2260 dev_dbg(dev, "%s - data bits = 6\n", __func__); 2261 break; 2262 case CS7: 2263 config->bDataBits = UMP_UART_CHAR7BITS; 2264 dev_dbg(dev, "%s - data bits = 7\n", __func__); 2265 break; 2266 default: 2267 case CS8: 2268 config->bDataBits = UMP_UART_CHAR8BITS; 2269 dev_dbg(dev, "%s - data bits = 8\n", __func__); 2270 break; 2271 } 2272 2273 if (cflag & PARENB) { 2274 if (cflag & PARODD) { 2275 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; 2276 config->bParity = UMP_UART_ODDPARITY; 2277 dev_dbg(dev, "%s - parity = odd\n", __func__); 2278 } else { 2279 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; 2280 config->bParity = UMP_UART_EVENPARITY; 2281 dev_dbg(dev, "%s - parity = even\n", __func__); 2282 } 2283 } else { 2284 config->bParity = UMP_UART_NOPARITY; 2285 dev_dbg(dev, "%s - parity = none\n", __func__); 2286 } 2287 2288 if (cflag & CSTOPB) { 2289 config->bStopBits = UMP_UART_STOPBIT2; 2290 dev_dbg(dev, "%s - stop bits = 2\n", __func__); 2291 } else { 2292 config->bStopBits = UMP_UART_STOPBIT1; 2293 dev_dbg(dev, "%s - stop bits = 1\n", __func__); 2294 } 2295 2296 /* figure out the flow control settings */ 2297 if (cflag & CRTSCTS) { 2298 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW; 2299 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW; 2300 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__); 2301 } else { 2302 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__); 2303 restart_read(edge_port); 2304 } 2305 2306 /* 2307 * if we are implementing XON/XOFF, set the start and stop 2308 * character in the device 2309 */ 2310 config->cXon = START_CHAR(tty); 2311 config->cXoff = STOP_CHAR(tty); 2312 2313 /* if we are implementing INBOUND XON/XOFF */ 2314 if (I_IXOFF(tty)) { 2315 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X; 2316 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", 2317 __func__, config->cXon, config->cXoff); 2318 } else 2319 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__); 2320 2321 /* if we are implementing OUTBOUND XON/XOFF */ 2322 if (I_IXON(tty)) { 2323 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X; 2324 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", 2325 __func__, config->cXon, config->cXoff); 2326 } else 2327 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__); 2328 2329 tty->termios.c_cflag &= ~CMSPAR; 2330 2331 /* Round the baud rate */ 2332 baud = tty_get_baud_rate(tty); 2333 if (!baud) { 2334 /* pick a default, any default... */ 2335 baud = 9600; 2336 } else { 2337 /* Avoid a zero divisor. */ 2338 baud = min(baud, 461550); 2339 tty_encode_baud_rate(tty, baud, baud); 2340 } 2341 2342 edge_port->baud_rate = baud; 2343 config->wBaudRate = (__u16)((461550L + baud/2) / baud); 2344 2345 /* FIXME: Recompute actual baud from divisor here */ 2346 2347 dev_dbg(dev, "%s - baud rate = %d, wBaudRate = %d\n", __func__, baud, config->wBaudRate); 2348 2349 dev_dbg(dev, "wBaudRate: %d\n", (int)(461550L / config->wBaudRate)); 2350 dev_dbg(dev, "wFlags: 0x%x\n", config->wFlags); 2351 dev_dbg(dev, "bDataBits: %d\n", config->bDataBits); 2352 dev_dbg(dev, "bParity: %d\n", config->bParity); 2353 dev_dbg(dev, "bStopBits: %d\n", config->bStopBits); 2354 dev_dbg(dev, "cXon: %d\n", config->cXon); 2355 dev_dbg(dev, "cXoff: %d\n", config->cXoff); 2356 dev_dbg(dev, "bUartMode: %d\n", config->bUartMode); 2357 2358 /* move the word values into big endian mode */ 2359 cpu_to_be16s(&config->wFlags); 2360 cpu_to_be16s(&config->wBaudRate); 2361 2362 status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG, 2363 (__u8)(UMPM_UART1_PORT + port_number), 2364 0, (__u8 *)config, sizeof(*config)); 2365 if (status) 2366 dev_dbg(dev, "%s - error %d when trying to write config to device\n", 2367 __func__, status); 2368 kfree(config); 2369 } 2370 2371 static void edge_set_termios(struct tty_struct *tty, 2372 struct usb_serial_port *port, struct ktermios *old_termios) 2373 { 2374 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2375 2376 if (edge_port == NULL) 2377 return; 2378 /* change the port settings to the new ones specified */ 2379 change_port_settings(tty, edge_port, old_termios); 2380 } 2381 2382 static int edge_tiocmset(struct tty_struct *tty, 2383 unsigned int set, unsigned int clear) 2384 { 2385 struct usb_serial_port *port = tty->driver_data; 2386 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2387 unsigned int mcr; 2388 unsigned long flags; 2389 2390 spin_lock_irqsave(&edge_port->ep_lock, flags); 2391 mcr = edge_port->shadow_mcr; 2392 if (set & TIOCM_RTS) 2393 mcr |= MCR_RTS; 2394 if (set & TIOCM_DTR) 2395 mcr |= MCR_DTR; 2396 if (set & TIOCM_LOOP) 2397 mcr |= MCR_LOOPBACK; 2398 2399 if (clear & TIOCM_RTS) 2400 mcr &= ~MCR_RTS; 2401 if (clear & TIOCM_DTR) 2402 mcr &= ~MCR_DTR; 2403 if (clear & TIOCM_LOOP) 2404 mcr &= ~MCR_LOOPBACK; 2405 2406 edge_port->shadow_mcr = mcr; 2407 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2408 2409 restore_mcr(edge_port, mcr); 2410 return 0; 2411 } 2412 2413 static int edge_tiocmget(struct tty_struct *tty) 2414 { 2415 struct usb_serial_port *port = tty->driver_data; 2416 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2417 unsigned int result = 0; 2418 unsigned int msr; 2419 unsigned int mcr; 2420 unsigned long flags; 2421 2422 spin_lock_irqsave(&edge_port->ep_lock, flags); 2423 2424 msr = edge_port->shadow_msr; 2425 mcr = edge_port->shadow_mcr; 2426 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ 2427 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ 2428 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ 2429 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */ 2430 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ 2431 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ 2432 2433 2434 dev_dbg(&port->dev, "%s -- %x\n", __func__, result); 2435 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2436 2437 return result; 2438 } 2439 2440 static int get_serial_info(struct tty_struct *tty, 2441 struct serial_struct *ss) 2442 { 2443 struct usb_serial_port *port = tty->driver_data; 2444 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2445 unsigned cwait; 2446 2447 cwait = edge_port->port->port.closing_wait; 2448 if (cwait != ASYNC_CLOSING_WAIT_NONE) 2449 cwait = jiffies_to_msecs(cwait) / 10; 2450 2451 ss->type = PORT_16550A; 2452 ss->line = edge_port->port->minor; 2453 ss->port = edge_port->port->port_number; 2454 ss->irq = 0; 2455 ss->xmit_fifo_size = edge_port->port->bulk_out_size; 2456 ss->baud_base = 9600; 2457 ss->close_delay = 5*HZ; 2458 ss->closing_wait = cwait; 2459 return 0; 2460 } 2461 2462 static void edge_break(struct tty_struct *tty, int break_state) 2463 { 2464 struct usb_serial_port *port = tty->driver_data; 2465 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2466 int status; 2467 int bv = 0; /* Off */ 2468 2469 if (break_state == -1) 2470 bv = 1; /* On */ 2471 status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv); 2472 if (status) 2473 dev_dbg(&port->dev, "%s - error %d sending break set/clear command.\n", 2474 __func__, status); 2475 } 2476 2477 static void edge_heartbeat_schedule(struct edgeport_serial *edge_serial) 2478 { 2479 if (!edge_serial->use_heartbeat) 2480 return; 2481 2482 schedule_delayed_work(&edge_serial->heartbeat_work, 2483 FW_HEARTBEAT_SECS * HZ); 2484 } 2485 2486 static void edge_heartbeat_work(struct work_struct *work) 2487 { 2488 struct edgeport_serial *serial; 2489 struct ti_i2c_desc *rom_desc; 2490 2491 serial = container_of(work, struct edgeport_serial, 2492 heartbeat_work.work); 2493 2494 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 2495 2496 /* Descriptor address request is enough to reset the firmware timer */ 2497 if (!rom_desc || !get_descriptor_addr(serial, I2C_DESC_TYPE_ION, 2498 rom_desc)) { 2499 dev_err(&serial->serial->interface->dev, 2500 "%s - Incomplete heartbeat\n", __func__); 2501 } 2502 kfree(rom_desc); 2503 2504 edge_heartbeat_schedule(serial); 2505 } 2506 2507 static int edge_calc_num_ports(struct usb_serial *serial, 2508 struct usb_serial_endpoints *epds) 2509 { 2510 struct device *dev = &serial->interface->dev; 2511 unsigned char num_ports = serial->type->num_ports; 2512 2513 /* Make sure we have the required endpoints when in download mode. */ 2514 if (serial->interface->cur_altsetting->desc.bNumEndpoints > 1) { 2515 if (epds->num_bulk_in < num_ports || 2516 epds->num_bulk_out < num_ports || 2517 epds->num_interrupt_in < 1) { 2518 dev_err(dev, "required endpoints missing\n"); 2519 return -ENODEV; 2520 } 2521 } 2522 2523 return num_ports; 2524 } 2525 2526 static int edge_startup(struct usb_serial *serial) 2527 { 2528 struct edgeport_serial *edge_serial; 2529 int status; 2530 u16 product_id; 2531 2532 /* create our private serial structure */ 2533 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL); 2534 if (!edge_serial) 2535 return -ENOMEM; 2536 2537 mutex_init(&edge_serial->es_lock); 2538 edge_serial->serial = serial; 2539 INIT_DELAYED_WORK(&edge_serial->heartbeat_work, edge_heartbeat_work); 2540 usb_set_serial_data(serial, edge_serial); 2541 2542 status = download_fw(edge_serial); 2543 if (status < 0) { 2544 kfree(edge_serial); 2545 return status; 2546 } 2547 2548 if (status > 0) 2549 return 1; /* bind but do not register any ports */ 2550 2551 product_id = le16_to_cpu( 2552 edge_serial->serial->dev->descriptor.idProduct); 2553 2554 /* Currently only the EP/416 models require heartbeat support */ 2555 if (edge_serial->fw_version > FW_HEARTBEAT_VERSION_CUTOFF) { 2556 if (product_id == ION_DEVICE_ID_TI_EDGEPORT_416 || 2557 product_id == ION_DEVICE_ID_TI_EDGEPORT_416B) { 2558 edge_serial->use_heartbeat = true; 2559 } 2560 } 2561 2562 edge_heartbeat_schedule(edge_serial); 2563 2564 return 0; 2565 } 2566 2567 static void edge_disconnect(struct usb_serial *serial) 2568 { 2569 struct edgeport_serial *edge_serial = usb_get_serial_data(serial); 2570 2571 cancel_delayed_work_sync(&edge_serial->heartbeat_work); 2572 } 2573 2574 static void edge_release(struct usb_serial *serial) 2575 { 2576 struct edgeport_serial *edge_serial = usb_get_serial_data(serial); 2577 2578 cancel_delayed_work_sync(&edge_serial->heartbeat_work); 2579 kfree(edge_serial); 2580 } 2581 2582 static int edge_port_probe(struct usb_serial_port *port) 2583 { 2584 struct edgeport_port *edge_port; 2585 int ret; 2586 2587 edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL); 2588 if (!edge_port) 2589 return -ENOMEM; 2590 2591 spin_lock_init(&edge_port->ep_lock); 2592 edge_port->port = port; 2593 edge_port->edge_serial = usb_get_serial_data(port->serial); 2594 edge_port->bUartMode = default_uart_mode; 2595 2596 switch (port->port_number) { 2597 case 0: 2598 edge_port->uart_base = UMPMEM_BASE_UART1; 2599 edge_port->dma_address = UMPD_OEDB1_ADDRESS; 2600 break; 2601 case 1: 2602 edge_port->uart_base = UMPMEM_BASE_UART2; 2603 edge_port->dma_address = UMPD_OEDB2_ADDRESS; 2604 break; 2605 default: 2606 dev_err(&port->dev, "unknown port number\n"); 2607 ret = -ENODEV; 2608 goto err; 2609 } 2610 2611 dev_dbg(&port->dev, 2612 "%s - port_number = %d, uart_base = %04x, dma_address = %04x\n", 2613 __func__, port->port_number, edge_port->uart_base, 2614 edge_port->dma_address); 2615 2616 usb_set_serial_port_data(port, edge_port); 2617 2618 ret = edge_create_sysfs_attrs(port); 2619 if (ret) 2620 goto err; 2621 2622 port->port.closing_wait = msecs_to_jiffies(closing_wait * 10); 2623 port->port.drain_delay = 1; 2624 2625 return 0; 2626 err: 2627 kfree(edge_port); 2628 2629 return ret; 2630 } 2631 2632 static int edge_port_remove(struct usb_serial_port *port) 2633 { 2634 struct edgeport_port *edge_port; 2635 2636 edge_port = usb_get_serial_port_data(port); 2637 edge_remove_sysfs_attrs(port); 2638 kfree(edge_port); 2639 2640 return 0; 2641 } 2642 2643 /* Sysfs Attributes */ 2644 2645 static ssize_t uart_mode_show(struct device *dev, 2646 struct device_attribute *attr, char *buf) 2647 { 2648 struct usb_serial_port *port = to_usb_serial_port(dev); 2649 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2650 2651 return sprintf(buf, "%d\n", edge_port->bUartMode); 2652 } 2653 2654 static ssize_t uart_mode_store(struct device *dev, 2655 struct device_attribute *attr, const char *valbuf, size_t count) 2656 { 2657 struct usb_serial_port *port = to_usb_serial_port(dev); 2658 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2659 unsigned int v = simple_strtoul(valbuf, NULL, 0); 2660 2661 dev_dbg(dev, "%s: setting uart_mode = %d\n", __func__, v); 2662 2663 if (v < 256) 2664 edge_port->bUartMode = v; 2665 else 2666 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v); 2667 2668 return count; 2669 } 2670 static DEVICE_ATTR_RW(uart_mode); 2671 2672 static int edge_create_sysfs_attrs(struct usb_serial_port *port) 2673 { 2674 return device_create_file(&port->dev, &dev_attr_uart_mode); 2675 } 2676 2677 static int edge_remove_sysfs_attrs(struct usb_serial_port *port) 2678 { 2679 device_remove_file(&port->dev, &dev_attr_uart_mode); 2680 return 0; 2681 } 2682 2683 #ifdef CONFIG_PM 2684 static int edge_suspend(struct usb_serial *serial, pm_message_t message) 2685 { 2686 struct edgeport_serial *edge_serial = usb_get_serial_data(serial); 2687 2688 cancel_delayed_work_sync(&edge_serial->heartbeat_work); 2689 2690 return 0; 2691 } 2692 2693 static int edge_resume(struct usb_serial *serial) 2694 { 2695 struct edgeport_serial *edge_serial = usb_get_serial_data(serial); 2696 2697 edge_heartbeat_schedule(edge_serial); 2698 2699 return 0; 2700 } 2701 #endif 2702 2703 static struct usb_serial_driver edgeport_1port_device = { 2704 .driver = { 2705 .owner = THIS_MODULE, 2706 .name = "edgeport_ti_1", 2707 }, 2708 .description = "Edgeport TI 1 port adapter", 2709 .id_table = edgeport_1port_id_table, 2710 .num_ports = 1, 2711 .num_bulk_out = 1, 2712 .open = edge_open, 2713 .close = edge_close, 2714 .throttle = edge_throttle, 2715 .unthrottle = edge_unthrottle, 2716 .attach = edge_startup, 2717 .calc_num_ports = edge_calc_num_ports, 2718 .disconnect = edge_disconnect, 2719 .release = edge_release, 2720 .port_probe = edge_port_probe, 2721 .port_remove = edge_port_remove, 2722 .get_serial = get_serial_info, 2723 .set_termios = edge_set_termios, 2724 .tiocmget = edge_tiocmget, 2725 .tiocmset = edge_tiocmset, 2726 .tiocmiwait = usb_serial_generic_tiocmiwait, 2727 .get_icount = usb_serial_generic_get_icount, 2728 .write = edge_write, 2729 .write_room = edge_write_room, 2730 .chars_in_buffer = edge_chars_in_buffer, 2731 .tx_empty = edge_tx_empty, 2732 .break_ctl = edge_break, 2733 .read_int_callback = edge_interrupt_callback, 2734 .read_bulk_callback = edge_bulk_in_callback, 2735 .write_bulk_callback = edge_bulk_out_callback, 2736 #ifdef CONFIG_PM 2737 .suspend = edge_suspend, 2738 .resume = edge_resume, 2739 #endif 2740 }; 2741 2742 static struct usb_serial_driver edgeport_2port_device = { 2743 .driver = { 2744 .owner = THIS_MODULE, 2745 .name = "edgeport_ti_2", 2746 }, 2747 .description = "Edgeport TI 2 port adapter", 2748 .id_table = edgeport_2port_id_table, 2749 .num_ports = 2, 2750 .num_bulk_out = 1, 2751 .open = edge_open, 2752 .close = edge_close, 2753 .throttle = edge_throttle, 2754 .unthrottle = edge_unthrottle, 2755 .attach = edge_startup, 2756 .calc_num_ports = edge_calc_num_ports, 2757 .disconnect = edge_disconnect, 2758 .release = edge_release, 2759 .port_probe = edge_port_probe, 2760 .port_remove = edge_port_remove, 2761 .get_serial = get_serial_info, 2762 .set_termios = edge_set_termios, 2763 .tiocmget = edge_tiocmget, 2764 .tiocmset = edge_tiocmset, 2765 .tiocmiwait = usb_serial_generic_tiocmiwait, 2766 .get_icount = usb_serial_generic_get_icount, 2767 .write = edge_write, 2768 .write_room = edge_write_room, 2769 .chars_in_buffer = edge_chars_in_buffer, 2770 .tx_empty = edge_tx_empty, 2771 .break_ctl = edge_break, 2772 .read_int_callback = edge_interrupt_callback, 2773 .read_bulk_callback = edge_bulk_in_callback, 2774 .write_bulk_callback = edge_bulk_out_callback, 2775 #ifdef CONFIG_PM 2776 .suspend = edge_suspend, 2777 .resume = edge_resume, 2778 #endif 2779 }; 2780 2781 static struct usb_serial_driver * const serial_drivers[] = { 2782 &edgeport_1port_device, &edgeport_2port_device, NULL 2783 }; 2784 2785 module_usb_serial_driver(serial_drivers, id_table_combined); 2786 2787 MODULE_AUTHOR(DRIVER_AUTHOR); 2788 MODULE_DESCRIPTION(DRIVER_DESC); 2789 MODULE_LICENSE("GPL"); 2790 MODULE_FIRMWARE("edgeport/down3.bin"); 2791 2792 module_param(closing_wait, int, S_IRUGO | S_IWUSR); 2793 MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs"); 2794 2795 module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR); 2796 MODULE_PARM_DESC(ignore_cpu_rev, 2797 "Ignore the cpu revision when connecting to a device"); 2798 2799 module_param(default_uart_mode, int, S_IRUGO | S_IWUSR); 2800 MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ..."); 2801