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