Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Edgeport USB Serial Converter driver |
| 3 | * |
| 4 | * Copyright (C) 2000 Inside Out Networks, All rights reserved. |
| 5 | * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * Supports the following devices: |
| 13 | * Edgeport/4 |
| 14 | * Edgeport/4t |
| 15 | * Edgeport/2 |
| 16 | * Edgeport/4i |
| 17 | * Edgeport/2i |
| 18 | * Edgeport/421 |
| 19 | * Edgeport/21 |
| 20 | * Rapidport/4 |
| 21 | * Edgeport/8 |
| 22 | * Edgeport/2D8 |
| 23 | * Edgeport/4D8 |
| 24 | * Edgeport/8i |
| 25 | * |
| 26 | * For questions or problems with this driver, contact Inside Out |
| 27 | * Networks technical support, or Peter Berger <pberger@brimson.com>, |
| 28 | * or Al Borchers <alborchers@steinerpoint.com>. |
| 29 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | */ |
| 31 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | #include <linux/kernel.h> |
| 33 | #include <linux/jiffies.h> |
| 34 | #include <linux/errno.h> |
| 35 | #include <linux/init.h> |
| 36 | #include <linux/slab.h> |
| 37 | #include <linux/tty.h> |
| 38 | #include <linux/tty_driver.h> |
| 39 | #include <linux/tty_flip.h> |
| 40 | #include <linux/module.h> |
| 41 | #include <linux/spinlock.h> |
| 42 | #include <linux/serial.h> |
| 43 | #include <linux/ioctl.h> |
| 44 | #include <linux/wait.h> |
| 45 | #include <asm/uaccess.h> |
| 46 | #include <linux/usb.h> |
Greg Kroah-Hartman | a969888 | 2006-07-11 21:22:58 -0700 | [diff] [blame] | 47 | #include <linux/usb/serial.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | #include "io_edgeport.h" |
| 49 | #include "io_ionsp.h" /* info for the iosp messages */ |
| 50 | #include "io_16654.h" /* 16654 UART defines */ |
| 51 | |
| 52 | /* |
| 53 | * Version Information |
| 54 | */ |
| 55 | #define DRIVER_VERSION "v2.7" |
| 56 | #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli" |
| 57 | #define DRIVER_DESC "Edgeport USB Serial Driver" |
| 58 | |
| 59 | /* First, the latest boot code - for first generation edgeports */ |
| 60 | #define IMAGE_ARRAY_NAME BootCodeImage_GEN1 |
| 61 | #define IMAGE_VERSION_NAME BootCodeImageVersion_GEN1 |
| 62 | #include "io_fw_boot.h" /* the bootloader firmware to download to a device, if it needs it */ |
| 63 | |
| 64 | /* for second generation edgeports */ |
| 65 | #define IMAGE_ARRAY_NAME BootCodeImage_GEN2 |
| 66 | #define IMAGE_VERSION_NAME BootCodeImageVersion_GEN2 |
| 67 | #include "io_fw_boot2.h" /* the bootloader firmware to download to a device, if it needs it */ |
| 68 | |
| 69 | /* Then finally the main run-time operational code - for first generation edgeports */ |
| 70 | #define IMAGE_ARRAY_NAME OperationalCodeImage_GEN1 |
| 71 | #define IMAGE_VERSION_NAME OperationalCodeImageVersion_GEN1 |
| 72 | #include "io_fw_down.h" /* Define array OperationalCodeImage[] */ |
| 73 | |
| 74 | /* for second generation edgeports */ |
| 75 | #define IMAGE_ARRAY_NAME OperationalCodeImage_GEN2 |
| 76 | #define IMAGE_VERSION_NAME OperationalCodeImageVersion_GEN2 |
| 77 | #include "io_fw_down2.h" /* Define array OperationalCodeImage[] */ |
| 78 | |
| 79 | #define MAX_NAME_LEN 64 |
| 80 | |
| 81 | #define CHASE_TIMEOUT (5*HZ) /* 5 seconds */ |
| 82 | #define OPEN_TIMEOUT (5*HZ) /* 5 seconds */ |
| 83 | #define COMMAND_TIMEOUT (5*HZ) /* 5 seconds */ |
| 84 | |
| 85 | /* receive port state */ |
| 86 | enum RXSTATE { |
| 87 | EXPECT_HDR1 = 0, /* Expect header byte 1 */ |
| 88 | EXPECT_HDR2 = 1, /* Expect header byte 2 */ |
| 89 | EXPECT_DATA = 2, /* Expect 'RxBytesRemaining' data */ |
| 90 | EXPECT_HDR3 = 3, /* Expect header byte 3 (for status hdrs only) */ |
| 91 | }; |
| 92 | |
| 93 | |
| 94 | /* Transmit Fifo |
| 95 | * This Transmit queue is an extension of the edgeport Rx buffer. |
| 96 | * The maximum amount of data buffered in both the edgeport |
| 97 | * Rx buffer (maxTxCredits) and this buffer will never exceed maxTxCredits. |
| 98 | */ |
| 99 | struct TxFifo { |
| 100 | unsigned int head; /* index to head pointer (write) */ |
| 101 | unsigned int tail; /* index to tail pointer (read) */ |
| 102 | unsigned int count; /* Bytes in queue */ |
| 103 | unsigned int size; /* Max size of queue (equal to Max number of TxCredits) */ |
| 104 | unsigned char *fifo; /* allocated Buffer */ |
| 105 | }; |
| 106 | |
| 107 | /* This structure holds all of the local port information */ |
| 108 | struct edgeport_port { |
| 109 | __u16 txCredits; /* our current credits for this port */ |
| 110 | __u16 maxTxCredits; /* the max size of the port */ |
| 111 | |
| 112 | struct TxFifo txfifo; /* transmit fifo -- size will be maxTxCredits */ |
| 113 | struct urb *write_urb; /* write URB for this port */ |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 114 | bool write_in_progress; /* 'true' while a write URB is outstanding */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | spinlock_t ep_lock; |
| 116 | |
| 117 | __u8 shadowLCR; /* last LCR value received */ |
| 118 | __u8 shadowMCR; /* last MCR value received */ |
| 119 | __u8 shadowMSR; /* last MSR value received */ |
| 120 | __u8 shadowLSR; /* last LSR value received */ |
| 121 | __u8 shadowXonChar; /* last value set as XON char in Edgeport */ |
| 122 | __u8 shadowXoffChar; /* last value set as XOFF char in Edgeport */ |
| 123 | __u8 validDataMask; |
| 124 | __u32 baudRate; |
| 125 | |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 126 | bool open; |
| 127 | bool openPending; |
| 128 | bool commandPending; |
| 129 | bool closePending; |
| 130 | bool chaseResponsePending; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | |
| 132 | wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */ |
| 133 | wait_queue_head_t wait_open; /* for handling sleeping while waiting for open to finish */ |
| 134 | wait_queue_head_t wait_command; /* for handling sleeping while waiting for command to finish */ |
| 135 | wait_queue_head_t delta_msr_wait; /* for handling sleeping while waiting for msr change to happen */ |
| 136 | |
| 137 | struct async_icount icount; |
| 138 | struct usb_serial_port *port; /* loop back to the owner of this object */ |
| 139 | }; |
| 140 | |
| 141 | |
| 142 | /* This structure holds all of the individual device information */ |
| 143 | struct edgeport_serial { |
Pete Zaitcev | ad93375 | 2006-05-22 21:49:44 -0700 | [diff] [blame] | 144 | char name[MAX_NAME_LEN+2]; /* string name of this device */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | |
| 146 | struct edge_manuf_descriptor manuf_descriptor; /* the manufacturer descriptor */ |
| 147 | struct edge_boot_descriptor boot_descriptor; /* the boot firmware descriptor */ |
| 148 | struct edgeport_product_info product_info; /* Product Info */ |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 149 | struct edge_compatibility_descriptor epic_descriptor; /* Edgeport compatible descriptor */ |
| 150 | int is_epic; /* flag if EPiC device or not */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | |
| 152 | __u8 interrupt_in_endpoint; /* the interrupt endpoint handle */ |
| 153 | unsigned char * interrupt_in_buffer; /* the buffer we use for the interrupt endpoint */ |
| 154 | struct urb * interrupt_read_urb; /* our interrupt urb */ |
| 155 | |
| 156 | __u8 bulk_in_endpoint; /* the bulk in endpoint handle */ |
| 157 | unsigned char * bulk_in_buffer; /* the buffer we use for the bulk in endpoint */ |
| 158 | struct urb * read_urb; /* our bulk read urb */ |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 159 | bool read_in_progress; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | spinlock_t es_lock; |
| 161 | |
| 162 | __u8 bulk_out_endpoint; /* the bulk out endpoint handle */ |
| 163 | |
| 164 | __s16 rxBytesAvail; /* the number of bytes that we need to read from this device */ |
| 165 | |
| 166 | enum RXSTATE rxState; /* the current state of the bulk receive processor */ |
| 167 | __u8 rxHeader1; /* receive header byte 1 */ |
| 168 | __u8 rxHeader2; /* receive header byte 2 */ |
| 169 | __u8 rxHeader3; /* receive header byte 3 */ |
| 170 | __u8 rxPort; /* the port that we are currently receiving data for */ |
| 171 | __u8 rxStatusCode; /* the receive status code */ |
| 172 | __u8 rxStatusParam; /* the receive status paramater */ |
| 173 | __s16 rxBytesRemaining; /* the number of port bytes left to read */ |
| 174 | struct usb_serial *serial; /* loop back to the owner of this object */ |
| 175 | }; |
| 176 | |
| 177 | /* baud rate information */ |
| 178 | struct divisor_table_entry { |
| 179 | __u32 BaudRate; |
| 180 | __u16 Divisor; |
| 181 | }; |
| 182 | |
| 183 | // |
| 184 | // Define table of divisors for Rev A EdgePort/4 hardware |
| 185 | // These assume a 3.6864MHz crystal, the standard /16, and |
| 186 | // MCR.7 = 0. |
| 187 | // |
Arjan van de Ven | 4c4c943 | 2005-11-29 09:43:42 +0100 | [diff] [blame] | 188 | static const struct divisor_table_entry divisor_table[] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | { 50, 4608}, |
| 190 | { 75, 3072}, |
| 191 | { 110, 2095}, /* 2094.545455 => 230450 => .0217 % over */ |
| 192 | { 134, 1713}, /* 1713.011152 => 230398.5 => .00065% under */ |
| 193 | { 150, 1536}, |
| 194 | { 300, 768}, |
| 195 | { 600, 384}, |
| 196 | { 1200, 192}, |
| 197 | { 1800, 128}, |
| 198 | { 2400, 96}, |
| 199 | { 4800, 48}, |
| 200 | { 7200, 32}, |
| 201 | { 9600, 24}, |
| 202 | { 14400, 16}, |
| 203 | { 19200, 12}, |
| 204 | { 38400, 6}, |
| 205 | { 57600, 4}, |
| 206 | { 115200, 2}, |
| 207 | { 230400, 1}, |
| 208 | }; |
| 209 | |
| 210 | /* local variables */ |
| 211 | static int debug; |
| 212 | |
| 213 | static int low_latency = 1; /* tty low latency flag, on by default */ |
| 214 | |
Oliver Neukum | 96c706e | 2007-03-15 15:27:17 +0100 | [diff] [blame] | 215 | static atomic_t CmdUrbs; /* Number of outstanding Command Write Urbs */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | |
| 217 | |
| 218 | /* local function prototypes */ |
| 219 | |
| 220 | /* function prototypes for all URB callbacks */ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 221 | static void edge_interrupt_callback (struct urb *urb); |
| 222 | static void edge_bulk_in_callback (struct urb *urb); |
| 223 | static void edge_bulk_out_data_callback (struct urb *urb); |
| 224 | static void edge_bulk_out_cmd_callback (struct urb *urb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | |
| 226 | /* function prototypes for the usbserial callbacks */ |
| 227 | static int edge_open (struct usb_serial_port *port, struct file *filp); |
| 228 | static void edge_close (struct usb_serial_port *port, struct file *filp); |
| 229 | static int edge_write (struct usb_serial_port *port, const unsigned char *buf, int count); |
| 230 | static int edge_write_room (struct usb_serial_port *port); |
| 231 | static int edge_chars_in_buffer (struct usb_serial_port *port); |
| 232 | static void edge_throttle (struct usb_serial_port *port); |
| 233 | static void edge_unthrottle (struct usb_serial_port *port); |
Alan Cox | 606d099 | 2006-12-08 02:38:45 -0800 | [diff] [blame] | 234 | static void edge_set_termios (struct usb_serial_port *port, struct ktermios *old_termios); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | static int edge_ioctl (struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg); |
| 236 | static void edge_break (struct usb_serial_port *port, int break_state); |
| 237 | static int edge_tiocmget (struct usb_serial_port *port, struct file *file); |
| 238 | static int edge_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear); |
| 239 | static int edge_startup (struct usb_serial *serial); |
| 240 | static void edge_shutdown (struct usb_serial *serial); |
| 241 | |
| 242 | |
| 243 | #include "io_tables.h" /* all of the devices that this driver supports */ |
| 244 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | /* function prototypes for all of our local functions */ |
| 246 | static void process_rcvd_data (struct edgeport_serial *edge_serial, unsigned char *buffer, __u16 bufferLength); |
| 247 | static void process_rcvd_status (struct edgeport_serial *edge_serial, __u8 byte2, __u8 byte3); |
| 248 | static void edge_tty_recv (struct device *dev, struct tty_struct *tty, unsigned char *data, int length); |
| 249 | static void handle_new_msr (struct edgeport_port *edge_port, __u8 newMsr); |
| 250 | static void handle_new_lsr (struct edgeport_port *edge_port, __u8 lsrData, __u8 lsr, __u8 data); |
| 251 | static int send_iosp_ext_cmd (struct edgeport_port *edge_port, __u8 command, __u8 param); |
| 252 | static int calc_baud_rate_divisor (int baud_rate, int *divisor); |
| 253 | static int send_cmd_write_baud_rate (struct edgeport_port *edge_port, int baudRate); |
Alan Cox | 606d099 | 2006-12-08 02:38:45 -0800 | [diff] [blame] | 254 | static void change_port_settings (struct edgeport_port *edge_port, struct ktermios *old_termios); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | static int send_cmd_write_uart_register (struct edgeport_port *edge_port, __u8 regNum, __u8 regValue); |
| 256 | static int write_cmd_usb (struct edgeport_port *edge_port, unsigned char *buffer, int writeLength); |
| 257 | static void send_more_port_data (struct edgeport_serial *edge_serial, struct edgeport_port *edge_port); |
| 258 | |
| 259 | static int sram_write (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data); |
| 260 | static int rom_read (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data); |
| 261 | static int rom_write (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data); |
| 262 | static void get_manufacturing_desc (struct edgeport_serial *edge_serial); |
| 263 | static void get_boot_desc (struct edgeport_serial *edge_serial); |
| 264 | static void load_application_firmware (struct edgeport_serial *edge_serial); |
| 265 | |
Pete Zaitcev | ad93375 | 2006-05-22 21:49:44 -0700 | [diff] [blame] | 266 | static void unicode_to_ascii(char *string, int buflen, __le16 *unicode, int unicode_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | |
| 268 | |
| 269 | // ************************************************************************ |
| 270 | // ************************************************************************ |
| 271 | // ************************************************************************ |
| 272 | // ************************************************************************ |
| 273 | |
| 274 | /************************************************************************ |
| 275 | * * |
| 276 | * update_edgeport_E2PROM() Compare current versions of * |
| 277 | * Boot ROM and Manufacture * |
| 278 | * Descriptors with versions * |
| 279 | * embedded in this driver * |
| 280 | * * |
| 281 | ************************************************************************/ |
| 282 | static void update_edgeport_E2PROM (struct edgeport_serial *edge_serial) |
| 283 | { |
| 284 | __u32 BootCurVer; |
| 285 | __u32 BootNewVer; |
| 286 | __u8 BootMajorVersion; |
| 287 | __u8 BootMinorVersion; |
| 288 | __le16 BootBuildNumber; |
| 289 | __u8 *BootImage; |
| 290 | __u32 BootSize; |
| 291 | struct edge_firmware_image_record *record; |
| 292 | unsigned char *firmware; |
| 293 | int response; |
| 294 | |
| 295 | |
| 296 | switch (edge_serial->product_info.iDownloadFile) { |
| 297 | case EDGE_DOWNLOAD_FILE_I930: |
| 298 | BootMajorVersion = BootCodeImageVersion_GEN1.MajorVersion; |
| 299 | BootMinorVersion = BootCodeImageVersion_GEN1.MinorVersion; |
| 300 | BootBuildNumber = cpu_to_le16(BootCodeImageVersion_GEN1.BuildNumber); |
| 301 | BootImage = &BootCodeImage_GEN1[0]; |
| 302 | BootSize = sizeof( BootCodeImage_GEN1 ); |
| 303 | break; |
| 304 | |
| 305 | case EDGE_DOWNLOAD_FILE_80251: |
| 306 | BootMajorVersion = BootCodeImageVersion_GEN2.MajorVersion; |
| 307 | BootMinorVersion = BootCodeImageVersion_GEN2.MinorVersion; |
| 308 | BootBuildNumber = cpu_to_le16(BootCodeImageVersion_GEN2.BuildNumber); |
| 309 | BootImage = &BootCodeImage_GEN2[0]; |
| 310 | BootSize = sizeof( BootCodeImage_GEN2 ); |
| 311 | break; |
| 312 | |
| 313 | default: |
| 314 | return; |
| 315 | } |
| 316 | |
| 317 | // Check Boot Image Version |
| 318 | BootCurVer = (edge_serial->boot_descriptor.MajorVersion << 24) + |
| 319 | (edge_serial->boot_descriptor.MinorVersion << 16) + |
| 320 | le16_to_cpu(edge_serial->boot_descriptor.BuildNumber); |
| 321 | |
| 322 | BootNewVer = (BootMajorVersion << 24) + |
| 323 | (BootMinorVersion << 16) + |
| 324 | le16_to_cpu(BootBuildNumber); |
| 325 | |
| 326 | dbg("Current Boot Image version %d.%d.%d", |
| 327 | edge_serial->boot_descriptor.MajorVersion, |
| 328 | edge_serial->boot_descriptor.MinorVersion, |
| 329 | le16_to_cpu(edge_serial->boot_descriptor.BuildNumber)); |
| 330 | |
| 331 | |
| 332 | if (BootNewVer > BootCurVer) { |
| 333 | dbg("**Update Boot Image from %d.%d.%d to %d.%d.%d", |
| 334 | edge_serial->boot_descriptor.MajorVersion, |
| 335 | edge_serial->boot_descriptor.MinorVersion, |
| 336 | le16_to_cpu(edge_serial->boot_descriptor.BuildNumber), |
| 337 | BootMajorVersion, |
| 338 | BootMinorVersion, |
| 339 | le16_to_cpu(BootBuildNumber)); |
| 340 | |
| 341 | |
| 342 | dbg("Downloading new Boot Image"); |
| 343 | |
| 344 | firmware = BootImage; |
| 345 | |
| 346 | for (;;) { |
| 347 | record = (struct edge_firmware_image_record *)firmware; |
| 348 | response = rom_write (edge_serial->serial, le16_to_cpu(record->ExtAddr), le16_to_cpu(record->Addr), le16_to_cpu(record->Len), &record->Data[0]); |
| 349 | if (response < 0) { |
| 350 | dev_err(&edge_serial->serial->dev->dev, "rom_write failed (%x, %x, %d)\n", le16_to_cpu(record->ExtAddr), le16_to_cpu(record->Addr), le16_to_cpu(record->Len)); |
| 351 | break; |
| 352 | } |
| 353 | firmware += sizeof (struct edge_firmware_image_record) + le16_to_cpu(record->Len); |
| 354 | if (firmware >= &BootImage[BootSize]) { |
| 355 | break; |
| 356 | } |
| 357 | } |
| 358 | } else { |
| 359 | dbg("Boot Image -- already up to date"); |
| 360 | } |
| 361 | } |
| 362 | |
| 363 | |
| 364 | /************************************************************************ |
| 365 | * * |
| 366 | * Get string descriptor from device * |
| 367 | * * |
| 368 | ************************************************************************/ |
Pete Zaitcev | ad93375 | 2006-05-22 21:49:44 -0700 | [diff] [blame] | 369 | static int get_string (struct usb_device *dev, int Id, char *string, int buflen) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | { |
| 371 | struct usb_string_descriptor StringDesc; |
| 372 | struct usb_string_descriptor *pStringDesc; |
| 373 | |
| 374 | dbg("%s - USB String ID = %d", __FUNCTION__, Id ); |
| 375 | |
| 376 | if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc, sizeof(StringDesc))) { |
| 377 | return 0; |
| 378 | } |
| 379 | |
| 380 | pStringDesc = kmalloc (StringDesc.bLength, GFP_KERNEL); |
| 381 | |
| 382 | if (!pStringDesc) { |
| 383 | return 0; |
| 384 | } |
| 385 | |
| 386 | if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc, StringDesc.bLength )) { |
| 387 | kfree(pStringDesc); |
| 388 | return 0; |
| 389 | } |
| 390 | |
Pete Zaitcev | ad93375 | 2006-05-22 21:49:44 -0700 | [diff] [blame] | 391 | unicode_to_ascii(string, buflen, pStringDesc->wData, pStringDesc->bLength/2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | |
| 393 | kfree(pStringDesc); |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 394 | dbg("%s - USB String %s", __FUNCTION__, string); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | return strlen(string); |
| 396 | } |
| 397 | |
| 398 | |
| 399 | #if 0 |
| 400 | /************************************************************************ |
| 401 | * |
| 402 | * Get string descriptor from device |
| 403 | * |
| 404 | ************************************************************************/ |
| 405 | static int get_string_desc (struct usb_device *dev, int Id, struct usb_string_descriptor **pRetDesc) |
| 406 | { |
| 407 | struct usb_string_descriptor StringDesc; |
| 408 | struct usb_string_descriptor *pStringDesc; |
| 409 | |
| 410 | dbg("%s - USB String ID = %d", __FUNCTION__, Id ); |
| 411 | |
| 412 | if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc, sizeof(StringDesc))) { |
| 413 | return 0; |
| 414 | } |
| 415 | |
| 416 | pStringDesc = kmalloc (StringDesc.bLength, GFP_KERNEL); |
| 417 | |
| 418 | if (!pStringDesc) { |
| 419 | return -1; |
| 420 | } |
| 421 | |
| 422 | if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc, StringDesc.bLength )) { |
| 423 | kfree(pStringDesc); |
| 424 | return -1; |
| 425 | } |
| 426 | |
| 427 | *pRetDesc = pStringDesc; |
| 428 | return 0; |
| 429 | } |
| 430 | #endif |
| 431 | |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 432 | static void dump_product_info(struct edgeport_product_info *product_info) |
| 433 | { |
| 434 | // Dump Product Info structure |
| 435 | dbg("**Product Information:"); |
| 436 | dbg(" ProductId %x", product_info->ProductId ); |
| 437 | dbg(" NumPorts %d", product_info->NumPorts ); |
| 438 | dbg(" ProdInfoVer %d", product_info->ProdInfoVer ); |
| 439 | dbg(" IsServer %d", product_info->IsServer); |
| 440 | dbg(" IsRS232 %d", product_info->IsRS232 ); |
| 441 | dbg(" IsRS422 %d", product_info->IsRS422 ); |
| 442 | dbg(" IsRS485 %d", product_info->IsRS485 ); |
| 443 | dbg(" RomSize %d", product_info->RomSize ); |
| 444 | dbg(" RamSize %d", product_info->RamSize ); |
| 445 | dbg(" CpuRev %x", product_info->CpuRev ); |
| 446 | dbg(" BoardRev %x", product_info->BoardRev); |
| 447 | dbg(" BootMajorVersion %d.%d.%d", product_info->BootMajorVersion, |
| 448 | product_info->BootMinorVersion, |
| 449 | le16_to_cpu(product_info->BootBuildNumber)); |
| 450 | dbg(" FirmwareMajorVersion %d.%d.%d", product_info->FirmwareMajorVersion, |
| 451 | product_info->FirmwareMinorVersion, |
| 452 | le16_to_cpu(product_info->FirmwareBuildNumber)); |
| 453 | dbg(" ManufactureDescDate %d/%d/%d", product_info->ManufactureDescDate[0], |
| 454 | product_info->ManufactureDescDate[1], |
| 455 | product_info->ManufactureDescDate[2]+1900); |
| 456 | dbg(" iDownloadFile 0x%x", product_info->iDownloadFile); |
| 457 | dbg(" EpicVer %d", product_info->EpicVer); |
| 458 | } |
| 459 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 460 | static void get_product_info(struct edgeport_serial *edge_serial) |
| 461 | { |
| 462 | struct edgeport_product_info *product_info = &edge_serial->product_info; |
| 463 | |
| 464 | memset (product_info, 0, sizeof(struct edgeport_product_info)); |
| 465 | |
| 466 | product_info->ProductId = (__u16)(le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) & ~ION_DEVICE_ID_80251_NETCHIP); |
| 467 | product_info->NumPorts = edge_serial->manuf_descriptor.NumPorts; |
| 468 | product_info->ProdInfoVer = 0; |
| 469 | |
| 470 | product_info->RomSize = edge_serial->manuf_descriptor.RomSize; |
| 471 | product_info->RamSize = edge_serial->manuf_descriptor.RamSize; |
| 472 | product_info->CpuRev = edge_serial->manuf_descriptor.CpuRev; |
| 473 | product_info->BoardRev = edge_serial->manuf_descriptor.BoardRev; |
| 474 | |
| 475 | product_info->BootMajorVersion = edge_serial->boot_descriptor.MajorVersion; |
| 476 | product_info->BootMinorVersion = edge_serial->boot_descriptor.MinorVersion; |
| 477 | product_info->BootBuildNumber = edge_serial->boot_descriptor.BuildNumber; |
| 478 | |
| 479 | memcpy(product_info->ManufactureDescDate, edge_serial->manuf_descriptor.DescDate, sizeof(edge_serial->manuf_descriptor.DescDate)); |
| 480 | |
| 481 | // check if this is 2nd generation hardware |
| 482 | if (le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) & ION_DEVICE_ID_80251_NETCHIP) { |
| 483 | product_info->FirmwareMajorVersion = OperationalCodeImageVersion_GEN2.MajorVersion; |
| 484 | product_info->FirmwareMinorVersion = OperationalCodeImageVersion_GEN2.MinorVersion; |
| 485 | product_info->FirmwareBuildNumber = cpu_to_le16(OperationalCodeImageVersion_GEN2.BuildNumber); |
| 486 | product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_80251; |
| 487 | } else { |
| 488 | product_info->FirmwareMajorVersion = OperationalCodeImageVersion_GEN1.MajorVersion; |
| 489 | product_info->FirmwareMinorVersion = OperationalCodeImageVersion_GEN1.MinorVersion; |
| 490 | product_info->FirmwareBuildNumber = cpu_to_le16(OperationalCodeImageVersion_GEN1.BuildNumber); |
| 491 | product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_I930; |
| 492 | } |
| 493 | |
| 494 | // Determine Product type and set appropriate flags |
| 495 | switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info->ProductId)) { |
| 496 | case ION_DEVICE_ID_EDGEPORT_COMPATIBLE: |
| 497 | case ION_DEVICE_ID_EDGEPORT_4T: |
| 498 | case ION_DEVICE_ID_EDGEPORT_4: |
| 499 | case ION_DEVICE_ID_EDGEPORT_2: |
| 500 | case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU: |
| 501 | case ION_DEVICE_ID_EDGEPORT_8: |
| 502 | case ION_DEVICE_ID_EDGEPORT_421: |
| 503 | case ION_DEVICE_ID_EDGEPORT_21: |
| 504 | case ION_DEVICE_ID_EDGEPORT_2_DIN: |
| 505 | case ION_DEVICE_ID_EDGEPORT_4_DIN: |
| 506 | case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU: |
| 507 | product_info->IsRS232 = 1; |
| 508 | break; |
| 509 | |
| 510 | case ION_DEVICE_ID_EDGEPORT_2I: // Edgeport/2 RS422/RS485 |
| 511 | product_info->IsRS422 = 1; |
| 512 | product_info->IsRS485 = 1; |
| 513 | break; |
| 514 | |
| 515 | case ION_DEVICE_ID_EDGEPORT_8I: // Edgeport/4 RS422 |
| 516 | case ION_DEVICE_ID_EDGEPORT_4I: // Edgeport/4 RS422 |
| 517 | product_info->IsRS422 = 1; |
| 518 | break; |
| 519 | } |
| 520 | |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 521 | dump_product_info(product_info); |
| 522 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 523 | |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 524 | static int get_epic_descriptor(struct edgeport_serial *ep) |
| 525 | { |
| 526 | int result; |
| 527 | struct usb_serial *serial = ep->serial; |
| 528 | struct edgeport_product_info *product_info = &ep->product_info; |
| 529 | struct edge_compatibility_descriptor *epic = &ep->epic_descriptor; |
| 530 | struct edge_compatibility_bits *bits; |
| 531 | |
| 532 | ep->is_epic = 0; |
| 533 | result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
| 534 | USB_REQUEST_ION_GET_EPIC_DESC, |
| 535 | 0xC0, 0x00, 0x00, |
| 536 | &ep->epic_descriptor, |
| 537 | sizeof(struct edge_compatibility_descriptor), |
| 538 | 300); |
| 539 | |
| 540 | dbg("%s result = %d", __FUNCTION__, result); |
| 541 | |
| 542 | if (result > 0) { |
| 543 | ep->is_epic = 1; |
| 544 | memset(product_info, 0, sizeof(struct edgeport_product_info)); |
| 545 | |
| 546 | product_info->NumPorts = epic->NumPorts; |
| 547 | product_info->ProdInfoVer = 0; |
| 548 | product_info->FirmwareMajorVersion = epic->MajorVersion; |
| 549 | product_info->FirmwareMinorVersion = epic->MinorVersion; |
| 550 | product_info->FirmwareBuildNumber = epic->BuildNumber; |
| 551 | product_info->iDownloadFile = epic->iDownloadFile; |
| 552 | product_info->EpicVer = epic->EpicVer; |
| 553 | product_info->Epic = epic->Supports; |
| 554 | product_info->ProductId = ION_DEVICE_ID_EDGEPORT_COMPATIBLE; |
| 555 | dump_product_info(product_info); |
| 556 | |
| 557 | bits = &ep->epic_descriptor.Supports; |
| 558 | dbg("**EPIC descriptor:"); |
| 559 | dbg(" VendEnableSuspend: %s", bits->VendEnableSuspend ? "TRUE": "FALSE"); |
| 560 | dbg(" IOSPOpen : %s", bits->IOSPOpen ? "TRUE": "FALSE" ); |
| 561 | dbg(" IOSPClose : %s", bits->IOSPClose ? "TRUE": "FALSE" ); |
| 562 | dbg(" IOSPChase : %s", bits->IOSPChase ? "TRUE": "FALSE" ); |
| 563 | dbg(" IOSPSetRxFlow : %s", bits->IOSPSetRxFlow ? "TRUE": "FALSE" ); |
| 564 | dbg(" IOSPSetTxFlow : %s", bits->IOSPSetTxFlow ? "TRUE": "FALSE" ); |
| 565 | dbg(" IOSPSetXChar : %s", bits->IOSPSetXChar ? "TRUE": "FALSE" ); |
| 566 | dbg(" IOSPRxCheck : %s", bits->IOSPRxCheck ? "TRUE": "FALSE" ); |
| 567 | dbg(" IOSPSetClrBreak : %s", bits->IOSPSetClrBreak ? "TRUE": "FALSE" ); |
| 568 | dbg(" IOSPWriteMCR : %s", bits->IOSPWriteMCR ? "TRUE": "FALSE" ); |
| 569 | dbg(" IOSPWriteLCR : %s", bits->IOSPWriteLCR ? "TRUE": "FALSE" ); |
| 570 | dbg(" IOSPSetBaudRate : %s", bits->IOSPSetBaudRate ? "TRUE": "FALSE" ); |
| 571 | dbg(" TrueEdgeport : %s", bits->TrueEdgeport ? "TRUE": "FALSE" ); |
| 572 | } |
| 573 | |
| 574 | return result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | } |
| 576 | |
| 577 | |
| 578 | /************************************************************************/ |
| 579 | /************************************************************************/ |
| 580 | /* U S B C A L L B A C K F U N C T I O N S */ |
| 581 | /* U S B C A L L B A C K F U N C T I O N S */ |
| 582 | /************************************************************************/ |
| 583 | /************************************************************************/ |
| 584 | |
| 585 | /***************************************************************************** |
| 586 | * edge_interrupt_callback |
| 587 | * this is the callback function for when we have received data on the |
| 588 | * interrupt endpoint. |
| 589 | *****************************************************************************/ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 590 | static void edge_interrupt_callback (struct urb *urb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 591 | { |
| 592 | struct edgeport_serial *edge_serial = (struct edgeport_serial *)urb->context; |
| 593 | struct edgeport_port *edge_port; |
| 594 | struct usb_serial_port *port; |
| 595 | unsigned char *data = urb->transfer_buffer; |
| 596 | int length = urb->actual_length; |
| 597 | int bytes_avail; |
| 598 | int position; |
| 599 | int txCredits; |
| 600 | int portNumber; |
| 601 | int result; |
Greg Kroah-Hartman | 2a393f5 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 602 | int status = urb->status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 603 | |
| 604 | dbg("%s", __FUNCTION__); |
| 605 | |
Greg Kroah-Hartman | 2a393f5 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 606 | switch (status) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 607 | case 0: |
| 608 | /* success */ |
| 609 | break; |
| 610 | case -ECONNRESET: |
| 611 | case -ENOENT: |
| 612 | case -ESHUTDOWN: |
| 613 | /* this urb is terminated, clean up */ |
Greg Kroah-Hartman | 2a393f5 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 614 | dbg("%s - urb shutting down with status: %d", |
| 615 | __FUNCTION__, status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 616 | return; |
| 617 | default: |
Greg Kroah-Hartman | 2a393f5 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 618 | dbg("%s - nonzero urb status received: %d", |
| 619 | __FUNCTION__, status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | goto exit; |
| 621 | } |
| 622 | |
| 623 | // process this interrupt-read even if there are no ports open |
| 624 | if (length) { |
| 625 | usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, __FUNCTION__, length, data); |
| 626 | |
| 627 | if (length > 1) { |
| 628 | bytes_avail = data[0] | (data[1] << 8); |
| 629 | if (bytes_avail) { |
| 630 | spin_lock(&edge_serial->es_lock); |
| 631 | edge_serial->rxBytesAvail += bytes_avail; |
| 632 | dbg("%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d", __FUNCTION__, bytes_avail, edge_serial->rxBytesAvail, edge_serial->read_in_progress); |
| 633 | |
| 634 | if (edge_serial->rxBytesAvail > 0 && |
| 635 | !edge_serial->read_in_progress) { |
| 636 | dbg("%s - posting a read", __FUNCTION__); |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 637 | edge_serial->read_in_progress = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 638 | |
| 639 | /* we have pending bytes on the bulk in pipe, send a request */ |
| 640 | edge_serial->read_urb->dev = edge_serial->serial->dev; |
| 641 | result = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC); |
| 642 | if (result) { |
| 643 | dev_err(&edge_serial->serial->dev->dev, "%s - usb_submit_urb(read bulk) failed with result = %d\n", __FUNCTION__, result); |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 644 | edge_serial->read_in_progress = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 645 | } |
| 646 | } |
| 647 | spin_unlock(&edge_serial->es_lock); |
| 648 | } |
| 649 | } |
| 650 | /* grab the txcredits for the ports if available */ |
| 651 | position = 2; |
| 652 | portNumber = 0; |
| 653 | while ((position < length) && (portNumber < edge_serial->serial->num_ports)) { |
| 654 | txCredits = data[position] | (data[position+1] << 8); |
| 655 | if (txCredits) { |
| 656 | port = edge_serial->serial->port[portNumber]; |
| 657 | edge_port = usb_get_serial_port_data(port); |
| 658 | if (edge_port->open) { |
| 659 | spin_lock(&edge_port->ep_lock); |
| 660 | edge_port->txCredits += txCredits; |
| 661 | spin_unlock(&edge_port->ep_lock); |
| 662 | dbg("%s - txcredits for port%d = %d", __FUNCTION__, portNumber, edge_port->txCredits); |
| 663 | |
| 664 | /* tell the tty driver that something has changed */ |
| 665 | if (edge_port->port->tty) |
| 666 | tty_wakeup(edge_port->port->tty); |
| 667 | |
| 668 | // Since we have more credit, check if more data can be sent |
| 669 | send_more_port_data(edge_serial, edge_port); |
| 670 | } |
| 671 | } |
| 672 | position += 2; |
| 673 | ++portNumber; |
| 674 | } |
| 675 | } |
| 676 | |
| 677 | exit: |
| 678 | result = usb_submit_urb (urb, GFP_ATOMIC); |
| 679 | if (result) { |
| 680 | dev_err(&urb->dev->dev, "%s - Error %d submitting control urb\n", __FUNCTION__, result); |
| 681 | } |
| 682 | } |
| 683 | |
| 684 | |
| 685 | /***************************************************************************** |
| 686 | * edge_bulk_in_callback |
| 687 | * this is the callback function for when we have received data on the |
| 688 | * bulk in endpoint. |
| 689 | *****************************************************************************/ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 690 | static void edge_bulk_in_callback (struct urb *urb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 691 | { |
| 692 | struct edgeport_serial *edge_serial = (struct edgeport_serial *)urb->context; |
| 693 | unsigned char *data = urb->transfer_buffer; |
Greg Kroah-Hartman | 2a393f5 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 694 | int retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 695 | __u16 raw_data_length; |
Greg Kroah-Hartman | 2a393f5 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 696 | int status = urb->status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 697 | |
| 698 | dbg("%s", __FUNCTION__); |
| 699 | |
Greg Kroah-Hartman | 2a393f5 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 700 | if (status) { |
| 701 | dbg("%s - nonzero read bulk status received: %d", |
| 702 | __FUNCTION__, status); |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 703 | edge_serial->read_in_progress = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 704 | return; |
| 705 | } |
| 706 | |
| 707 | if (urb->actual_length == 0) { |
| 708 | dbg("%s - read bulk callback with no data", __FUNCTION__); |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 709 | edge_serial->read_in_progress = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 710 | return; |
| 711 | } |
| 712 | |
| 713 | raw_data_length = urb->actual_length; |
| 714 | |
| 715 | usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, __FUNCTION__, raw_data_length, data); |
| 716 | |
| 717 | spin_lock(&edge_serial->es_lock); |
| 718 | |
| 719 | /* decrement our rxBytes available by the number that we just got */ |
| 720 | edge_serial->rxBytesAvail -= raw_data_length; |
| 721 | |
| 722 | dbg("%s - Received = %d, rxBytesAvail %d", __FUNCTION__, raw_data_length, edge_serial->rxBytesAvail); |
| 723 | |
| 724 | process_rcvd_data (edge_serial, data, urb->actual_length); |
| 725 | |
| 726 | /* check to see if there's any more data for us to read */ |
| 727 | if (edge_serial->rxBytesAvail > 0) { |
| 728 | dbg("%s - posting a read", __FUNCTION__); |
| 729 | edge_serial->read_urb->dev = edge_serial->serial->dev; |
Greg Kroah-Hartman | 2a393f5 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 730 | retval = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC); |
| 731 | if (retval) { |
| 732 | dev_err(&urb->dev->dev, |
| 733 | "%s - usb_submit_urb(read bulk) failed, " |
| 734 | "retval = %d\n", __FUNCTION__, retval); |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 735 | edge_serial->read_in_progress = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 736 | } |
| 737 | } else { |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 738 | edge_serial->read_in_progress = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 739 | } |
| 740 | |
| 741 | spin_unlock(&edge_serial->es_lock); |
| 742 | } |
| 743 | |
| 744 | |
| 745 | /***************************************************************************** |
| 746 | * edge_bulk_out_data_callback |
| 747 | * this is the callback function for when we have finished sending serial data |
| 748 | * on the bulk out endpoint. |
| 749 | *****************************************************************************/ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 750 | static void edge_bulk_out_data_callback (struct urb *urb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 751 | { |
| 752 | struct edgeport_port *edge_port = (struct edgeport_port *)urb->context; |
| 753 | struct tty_struct *tty; |
Greg Kroah-Hartman | 2a393f5 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 754 | int status = urb->status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 755 | |
| 756 | dbg("%s", __FUNCTION__); |
| 757 | |
Greg Kroah-Hartman | 2a393f5 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 758 | if (status) { |
| 759 | dbg("%s - nonzero write bulk status received: %d", |
| 760 | __FUNCTION__, status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 761 | } |
| 762 | |
| 763 | tty = edge_port->port->tty; |
| 764 | |
| 765 | if (tty && edge_port->open) { |
| 766 | /* let the tty driver wakeup if it has a special write_wakeup function */ |
| 767 | tty_wakeup(tty); |
| 768 | } |
| 769 | |
| 770 | // Release the Write URB |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 771 | edge_port->write_in_progress = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 772 | |
| 773 | // Check if more data needs to be sent |
| 774 | send_more_port_data((struct edgeport_serial *)(usb_get_serial_data(edge_port->port->serial)), edge_port); |
| 775 | } |
| 776 | |
| 777 | |
| 778 | /***************************************************************************** |
| 779 | * BulkOutCmdCallback |
| 780 | * this is the callback function for when we have finished sending a command |
| 781 | * on the bulk out endpoint. |
| 782 | *****************************************************************************/ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 783 | static void edge_bulk_out_cmd_callback (struct urb *urb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 784 | { |
| 785 | struct edgeport_port *edge_port = (struct edgeport_port *)urb->context; |
| 786 | struct tty_struct *tty; |
| 787 | int status = urb->status; |
| 788 | |
| 789 | dbg("%s", __FUNCTION__); |
| 790 | |
Oliver Neukum | 96c706e | 2007-03-15 15:27:17 +0100 | [diff] [blame] | 791 | atomic_dec(&CmdUrbs); |
| 792 | dbg("%s - FREE URB %p (outstanding %d)", __FUNCTION__, urb, atomic_read(&CmdUrbs)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 793 | |
| 794 | |
| 795 | /* clean up the transfer buffer */ |
Jesper Juhl | 1bc3c9e | 2005-04-18 17:39:34 -0700 | [diff] [blame] | 796 | kfree(urb->transfer_buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 797 | |
| 798 | /* Free the command urb */ |
| 799 | usb_free_urb (urb); |
| 800 | |
| 801 | if (status) { |
| 802 | dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, status); |
| 803 | return; |
| 804 | } |
| 805 | |
| 806 | /* Get pointer to tty */ |
| 807 | tty = edge_port->port->tty; |
| 808 | |
| 809 | /* tell the tty driver that something has changed */ |
| 810 | if (tty && edge_port->open) |
| 811 | tty_wakeup(tty); |
| 812 | |
| 813 | /* we have completed the command */ |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 814 | edge_port->commandPending = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 815 | wake_up(&edge_port->wait_command); |
| 816 | } |
| 817 | |
| 818 | |
| 819 | /***************************************************************************** |
| 820 | * Driver tty interface functions |
| 821 | *****************************************************************************/ |
| 822 | |
| 823 | /***************************************************************************** |
| 824 | * SerialOpen |
| 825 | * this function is called by the tty driver when a port is opened |
| 826 | * If successful, we return 0 |
| 827 | * Otherwise we return a negative error number. |
| 828 | *****************************************************************************/ |
| 829 | static int edge_open (struct usb_serial_port *port, struct file * filp) |
| 830 | { |
| 831 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
| 832 | struct usb_serial *serial; |
| 833 | struct edgeport_serial *edge_serial; |
| 834 | int response; |
| 835 | |
| 836 | dbg("%s - port %d", __FUNCTION__, port->number); |
| 837 | |
| 838 | if (edge_port == NULL) |
| 839 | return -ENODEV; |
| 840 | |
| 841 | if (port->tty) |
| 842 | port->tty->low_latency = low_latency; |
| 843 | |
| 844 | /* see if we've set up our endpoint info yet (can't set it up in edge_startup |
| 845 | as the structures were not set up at that time.) */ |
| 846 | serial = port->serial; |
| 847 | edge_serial = usb_get_serial_data(serial); |
| 848 | if (edge_serial == NULL) { |
| 849 | return -ENODEV; |
| 850 | } |
| 851 | if (edge_serial->interrupt_in_buffer == NULL) { |
| 852 | struct usb_serial_port *port0 = serial->port[0]; |
| 853 | |
| 854 | /* not set up yet, so do it now */ |
| 855 | edge_serial->interrupt_in_buffer = port0->interrupt_in_buffer; |
| 856 | edge_serial->interrupt_in_endpoint = port0->interrupt_in_endpointAddress; |
| 857 | edge_serial->interrupt_read_urb = port0->interrupt_in_urb; |
| 858 | edge_serial->bulk_in_buffer = port0->bulk_in_buffer; |
| 859 | edge_serial->bulk_in_endpoint = port0->bulk_in_endpointAddress; |
| 860 | edge_serial->read_urb = port0->read_urb; |
| 861 | edge_serial->bulk_out_endpoint = port0->bulk_out_endpointAddress; |
| 862 | |
| 863 | /* set up our interrupt urb */ |
| 864 | usb_fill_int_urb(edge_serial->interrupt_read_urb, |
| 865 | serial->dev, |
| 866 | usb_rcvintpipe(serial->dev, |
| 867 | port0->interrupt_in_endpointAddress), |
| 868 | port0->interrupt_in_buffer, |
| 869 | edge_serial->interrupt_read_urb->transfer_buffer_length, |
| 870 | edge_interrupt_callback, edge_serial, |
| 871 | edge_serial->interrupt_read_urb->interval); |
| 872 | |
| 873 | /* set up our bulk in urb */ |
| 874 | usb_fill_bulk_urb(edge_serial->read_urb, serial->dev, |
| 875 | usb_rcvbulkpipe(serial->dev, |
| 876 | port0->bulk_in_endpointAddress), |
| 877 | port0->bulk_in_buffer, |
| 878 | edge_serial->read_urb->transfer_buffer_length, |
| 879 | edge_bulk_in_callback, edge_serial); |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 880 | edge_serial->read_in_progress = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 881 | |
| 882 | /* start interrupt read for this edgeport |
| 883 | * this interrupt will continue as long as the edgeport is connected */ |
| 884 | response = usb_submit_urb (edge_serial->interrupt_read_urb, GFP_KERNEL); |
| 885 | if (response) { |
| 886 | dev_err(&port->dev, "%s - Error %d submitting control urb\n", __FUNCTION__, response); |
| 887 | } |
| 888 | } |
| 889 | |
| 890 | /* initialize our wait queues */ |
| 891 | init_waitqueue_head(&edge_port->wait_open); |
| 892 | init_waitqueue_head(&edge_port->wait_chase); |
| 893 | init_waitqueue_head(&edge_port->delta_msr_wait); |
| 894 | init_waitqueue_head(&edge_port->wait_command); |
| 895 | |
| 896 | /* initialize our icount structure */ |
| 897 | memset (&(edge_port->icount), 0x00, sizeof(edge_port->icount)); |
| 898 | |
| 899 | /* initialize our port settings */ |
| 900 | edge_port->txCredits = 0; /* Can't send any data yet */ |
| 901 | edge_port->shadowMCR = MCR_MASTER_IE; /* Must always set this bit to enable ints! */ |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 902 | edge_port->chaseResponsePending = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 903 | |
| 904 | /* send a open port command */ |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 905 | edge_port->openPending = true; |
| 906 | edge_port->open = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 907 | response = send_iosp_ext_cmd (edge_port, IOSP_CMD_OPEN_PORT, 0); |
| 908 | |
| 909 | if (response < 0) { |
| 910 | dev_err(&port->dev, "%s - error sending open port command\n", __FUNCTION__); |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 911 | edge_port->openPending = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 912 | return -ENODEV; |
| 913 | } |
| 914 | |
| 915 | /* now wait for the port to be completely opened */ |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 916 | wait_event_timeout(edge_port->wait_open, !edge_port->openPending, OPEN_TIMEOUT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 917 | |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 918 | if (!edge_port->open) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 919 | /* open timed out */ |
| 920 | dbg("%s - open timedout", __FUNCTION__); |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 921 | edge_port->openPending = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 922 | return -ENODEV; |
| 923 | } |
| 924 | |
| 925 | /* create the txfifo */ |
| 926 | edge_port->txfifo.head = 0; |
| 927 | edge_port->txfifo.tail = 0; |
| 928 | edge_port->txfifo.count = 0; |
| 929 | edge_port->txfifo.size = edge_port->maxTxCredits; |
| 930 | edge_port->txfifo.fifo = kmalloc (edge_port->maxTxCredits, GFP_KERNEL); |
| 931 | |
| 932 | if (!edge_port->txfifo.fifo) { |
| 933 | dbg("%s - no memory", __FUNCTION__); |
| 934 | edge_close (port, filp); |
| 935 | return -ENOMEM; |
| 936 | } |
| 937 | |
| 938 | /* Allocate a URB for the write */ |
| 939 | edge_port->write_urb = usb_alloc_urb (0, GFP_KERNEL); |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 940 | edge_port->write_in_progress = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 941 | |
| 942 | if (!edge_port->write_urb) { |
| 943 | dbg("%s - no memory", __FUNCTION__); |
| 944 | edge_close (port, filp); |
| 945 | return -ENOMEM; |
| 946 | } |
| 947 | |
| 948 | dbg("%s(%d) - Initialize TX fifo to %d bytes", __FUNCTION__, port->number, edge_port->maxTxCredits); |
| 949 | |
| 950 | dbg("%s exited", __FUNCTION__); |
| 951 | |
| 952 | return 0; |
| 953 | } |
| 954 | |
| 955 | |
| 956 | /************************************************************************ |
| 957 | * |
| 958 | * block_until_chase_response |
| 959 | * |
| 960 | * This function will block the close until one of the following: |
| 961 | * 1. Response to our Chase comes from Edgeport |
| 962 | * 2. A timout of 10 seconds without activity has expired |
| 963 | * (1K of Edgeport data @ 2400 baud ==> 4 sec to empty) |
| 964 | * |
| 965 | ************************************************************************/ |
| 966 | static void block_until_chase_response(struct edgeport_port *edge_port) |
| 967 | { |
| 968 | DEFINE_WAIT(wait); |
| 969 | __u16 lastCredits; |
| 970 | int timeout = 1*HZ; |
| 971 | int loop = 10; |
| 972 | |
| 973 | while (1) { |
| 974 | // Save Last credits |
| 975 | lastCredits = edge_port->txCredits; |
| 976 | |
| 977 | // Did we get our Chase response |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 978 | if (!edge_port->chaseResponsePending) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 979 | dbg("%s - Got Chase Response", __FUNCTION__); |
| 980 | |
| 981 | // did we get all of our credit back? |
| 982 | if (edge_port->txCredits == edge_port->maxTxCredits ) { |
| 983 | dbg("%s - Got all credits", __FUNCTION__); |
| 984 | return; |
| 985 | } |
| 986 | } |
| 987 | |
| 988 | // Block the thread for a while |
| 989 | prepare_to_wait(&edge_port->wait_chase, &wait, TASK_UNINTERRUPTIBLE); |
| 990 | schedule_timeout(timeout); |
| 991 | finish_wait(&edge_port->wait_chase, &wait); |
| 992 | |
| 993 | if (lastCredits == edge_port->txCredits) { |
| 994 | // No activity.. count down. |
| 995 | loop--; |
| 996 | if (loop == 0) { |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 997 | edge_port->chaseResponsePending = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 998 | dbg("%s - Chase TIMEOUT", __FUNCTION__); |
| 999 | return; |
| 1000 | } |
| 1001 | } else { |
| 1002 | // Reset timout value back to 10 seconds |
| 1003 | dbg("%s - Last %d, Current %d", __FUNCTION__, lastCredits, edge_port->txCredits); |
| 1004 | loop = 10; |
| 1005 | } |
| 1006 | } |
| 1007 | } |
| 1008 | |
| 1009 | |
| 1010 | /************************************************************************ |
| 1011 | * |
| 1012 | * block_until_tx_empty |
| 1013 | * |
| 1014 | * This function will block the close until one of the following: |
| 1015 | * 1. TX count are 0 |
| 1016 | * 2. The edgeport has stopped |
| 1017 | * 3. A timout of 3 seconds without activity has expired |
| 1018 | * |
| 1019 | ************************************************************************/ |
| 1020 | static void block_until_tx_empty (struct edgeport_port *edge_port) |
| 1021 | { |
| 1022 | DEFINE_WAIT(wait); |
| 1023 | struct TxFifo *fifo = &edge_port->txfifo; |
| 1024 | __u32 lastCount; |
| 1025 | int timeout = HZ/10; |
| 1026 | int loop = 30; |
| 1027 | |
| 1028 | while (1) { |
| 1029 | // Save Last count |
| 1030 | lastCount = fifo->count; |
| 1031 | |
| 1032 | // Is the Edgeport Buffer empty? |
| 1033 | if (lastCount == 0) { |
| 1034 | dbg("%s - TX Buffer Empty", __FUNCTION__); |
| 1035 | return; |
| 1036 | } |
| 1037 | |
| 1038 | // Block the thread for a while |
| 1039 | prepare_to_wait (&edge_port->wait_chase, &wait, TASK_UNINTERRUPTIBLE); |
| 1040 | schedule_timeout(timeout); |
| 1041 | finish_wait(&edge_port->wait_chase, &wait); |
| 1042 | |
| 1043 | dbg("%s wait", __FUNCTION__); |
| 1044 | |
| 1045 | if (lastCount == fifo->count) { |
| 1046 | // No activity.. count down. |
| 1047 | loop--; |
| 1048 | if (loop == 0) { |
| 1049 | dbg("%s - TIMEOUT", __FUNCTION__); |
| 1050 | return; |
| 1051 | } |
| 1052 | } else { |
| 1053 | // Reset timout value back to seconds |
| 1054 | loop = 30; |
| 1055 | } |
| 1056 | } |
| 1057 | } |
| 1058 | |
| 1059 | |
| 1060 | /***************************************************************************** |
| 1061 | * edge_close |
| 1062 | * this function is called by the tty driver when a port is closed |
| 1063 | *****************************************************************************/ |
| 1064 | static void edge_close (struct usb_serial_port *port, struct file * filp) |
| 1065 | { |
| 1066 | struct edgeport_serial *edge_serial; |
| 1067 | struct edgeport_port *edge_port; |
| 1068 | int status; |
| 1069 | |
| 1070 | dbg("%s - port %d", __FUNCTION__, port->number); |
| 1071 | |
| 1072 | edge_serial = usb_get_serial_data(port->serial); |
| 1073 | edge_port = usb_get_serial_port_data(port); |
| 1074 | if ((edge_serial == NULL) || (edge_port == NULL)) |
| 1075 | return; |
| 1076 | |
| 1077 | // block until tx is empty |
| 1078 | block_until_tx_empty(edge_port); |
| 1079 | |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 1080 | edge_port->closePending = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1081 | |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 1082 | if ((!edge_serial->is_epic) || |
| 1083 | ((edge_serial->is_epic) && |
| 1084 | (edge_serial->epic_descriptor.Supports.IOSPChase))) { |
| 1085 | /* flush and chase */ |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 1086 | edge_port->chaseResponsePending = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1087 | |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 1088 | dbg("%s - Sending IOSP_CMD_CHASE_PORT", __FUNCTION__); |
| 1089 | status = send_iosp_ext_cmd (edge_port, IOSP_CMD_CHASE_PORT, 0); |
| 1090 | if (status == 0) { |
| 1091 | // block until chase finished |
| 1092 | block_until_chase_response(edge_port); |
| 1093 | } else { |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 1094 | edge_port->chaseResponsePending = false; |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 1095 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1096 | } |
| 1097 | |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 1098 | if ((!edge_serial->is_epic) || |
| 1099 | ((edge_serial->is_epic) && |
| 1100 | (edge_serial->epic_descriptor.Supports.IOSPClose))) { |
| 1101 | /* close the port */ |
| 1102 | dbg("%s - Sending IOSP_CMD_CLOSE_PORT", __FUNCTION__); |
| 1103 | send_iosp_ext_cmd (edge_port, IOSP_CMD_CLOSE_PORT, 0); |
| 1104 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1105 | |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 1106 | //port->close = true; |
| 1107 | edge_port->closePending = false; |
| 1108 | edge_port->open = false; |
| 1109 | edge_port->openPending = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1110 | |
Mariusz Kozlowski | 9a25f44 | 2006-11-08 15:36:29 +0100 | [diff] [blame] | 1111 | usb_kill_urb(edge_port->write_urb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1112 | |
| 1113 | if (edge_port->write_urb) { |
| 1114 | /* if this urb had a transfer buffer already (old transfer) free it */ |
Jesper Juhl | 1bc3c9e | 2005-04-18 17:39:34 -0700 | [diff] [blame] | 1115 | kfree(edge_port->write_urb->transfer_buffer); |
| 1116 | usb_free_urb(edge_port->write_urb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1117 | edge_port->write_urb = NULL; |
| 1118 | } |
Jesper Juhl | 1bc3c9e | 2005-04-18 17:39:34 -0700 | [diff] [blame] | 1119 | kfree(edge_port->txfifo.fifo); |
| 1120 | edge_port->txfifo.fifo = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1121 | |
| 1122 | dbg("%s exited", __FUNCTION__); |
| 1123 | } |
| 1124 | |
| 1125 | /***************************************************************************** |
| 1126 | * SerialWrite |
| 1127 | * this function is called by the tty driver when data should be written to |
| 1128 | * the port. |
| 1129 | * If successful, we return the number of bytes written, otherwise we return |
| 1130 | * a negative error number. |
| 1131 | *****************************************************************************/ |
| 1132 | static int edge_write (struct usb_serial_port *port, const unsigned char *data, int count) |
| 1133 | { |
| 1134 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
| 1135 | struct TxFifo *fifo; |
| 1136 | int copySize; |
| 1137 | int bytesleft; |
| 1138 | int firsthalf; |
| 1139 | int secondhalf; |
| 1140 | unsigned long flags; |
| 1141 | |
| 1142 | dbg("%s - port %d", __FUNCTION__, port->number); |
| 1143 | |
| 1144 | if (edge_port == NULL) |
| 1145 | return -ENODEV; |
| 1146 | |
| 1147 | // get a pointer to the Tx fifo |
| 1148 | fifo = &edge_port->txfifo; |
| 1149 | |
| 1150 | spin_lock_irqsave(&edge_port->ep_lock, flags); |
| 1151 | |
| 1152 | // calculate number of bytes to put in fifo |
| 1153 | copySize = min ((unsigned int)count, (edge_port->txCredits - fifo->count)); |
| 1154 | |
| 1155 | dbg("%s(%d) of %d byte(s) Fifo room %d -- will copy %d bytes", __FUNCTION__, |
| 1156 | port->number, count, edge_port->txCredits - fifo->count, copySize); |
| 1157 | |
| 1158 | /* catch writes of 0 bytes which the tty driver likes to give us, and when txCredits is empty */ |
| 1159 | if (copySize == 0) { |
| 1160 | dbg("%s - copySize = Zero", __FUNCTION__); |
| 1161 | goto finish_write; |
| 1162 | } |
| 1163 | |
| 1164 | // queue the data |
| 1165 | // since we can never overflow the buffer we do not have to check for full condition |
| 1166 | |
| 1167 | // the copy is done is two parts -- first fill to the end of the buffer |
| 1168 | // then copy the reset from the start of the buffer |
| 1169 | |
| 1170 | bytesleft = fifo->size - fifo->head; |
| 1171 | firsthalf = min (bytesleft, copySize); |
| 1172 | dbg("%s - copy %d bytes of %d into fifo ", __FUNCTION__, firsthalf, bytesleft); |
| 1173 | |
| 1174 | /* now copy our data */ |
| 1175 | memcpy(&fifo->fifo[fifo->head], data, firsthalf); |
| 1176 | usb_serial_debug_data(debug, &port->dev, __FUNCTION__, firsthalf, &fifo->fifo[fifo->head]); |
| 1177 | |
| 1178 | // update the index and size |
| 1179 | fifo->head += firsthalf; |
| 1180 | fifo->count += firsthalf; |
| 1181 | |
| 1182 | // wrap the index |
| 1183 | if (fifo->head == fifo->size) { |
| 1184 | fifo->head = 0; |
| 1185 | } |
| 1186 | |
| 1187 | secondhalf = copySize-firsthalf; |
| 1188 | |
| 1189 | if (secondhalf) { |
| 1190 | dbg("%s - copy rest of data %d", __FUNCTION__, secondhalf); |
| 1191 | memcpy(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf); |
| 1192 | usb_serial_debug_data(debug, &port->dev, __FUNCTION__, secondhalf, &fifo->fifo[fifo->head]); |
| 1193 | // update the index and size |
| 1194 | fifo->count += secondhalf; |
| 1195 | fifo->head += secondhalf; |
| 1196 | // No need to check for wrap since we can not get to end of fifo in this part |
| 1197 | } |
| 1198 | |
| 1199 | finish_write: |
| 1200 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); |
| 1201 | |
| 1202 | send_more_port_data((struct edgeport_serial *)usb_get_serial_data(port->serial), edge_port); |
| 1203 | |
| 1204 | dbg("%s wrote %d byte(s) TxCredits %d, Fifo %d", __FUNCTION__, copySize, edge_port->txCredits, fifo->count); |
| 1205 | |
| 1206 | return copySize; |
| 1207 | } |
| 1208 | |
| 1209 | |
| 1210 | /************************************************************************ |
| 1211 | * |
| 1212 | * send_more_port_data() |
| 1213 | * |
| 1214 | * This routine attempts to write additional UART transmit data |
| 1215 | * to a port over the USB bulk pipe. It is called (1) when new |
| 1216 | * data has been written to a port's TxBuffer from higher layers |
| 1217 | * (2) when the peripheral sends us additional TxCredits indicating |
| 1218 | * that it can accept more Tx data for a given port; and (3) when |
| 1219 | * a bulk write completes successfully and we want to see if we |
| 1220 | * can transmit more. |
| 1221 | * |
| 1222 | ************************************************************************/ |
| 1223 | static void send_more_port_data(struct edgeport_serial *edge_serial, struct edgeport_port *edge_port) |
| 1224 | { |
| 1225 | struct TxFifo *fifo = &edge_port->txfifo; |
| 1226 | struct urb *urb; |
| 1227 | unsigned char *buffer; |
| 1228 | int status; |
| 1229 | int count; |
| 1230 | int bytesleft; |
| 1231 | int firsthalf; |
| 1232 | int secondhalf; |
| 1233 | unsigned long flags; |
| 1234 | |
| 1235 | dbg("%s(%d)", __FUNCTION__, edge_port->port->number); |
| 1236 | |
| 1237 | spin_lock_irqsave(&edge_port->ep_lock, flags); |
| 1238 | |
| 1239 | if (edge_port->write_in_progress || |
| 1240 | !edge_port->open || |
| 1241 | (fifo->count == 0)) { |
| 1242 | dbg("%s(%d) EXIT - fifo %d, PendingWrite = %d", __FUNCTION__, edge_port->port->number, fifo->count, edge_port->write_in_progress); |
| 1243 | goto exit_send; |
| 1244 | } |
| 1245 | |
| 1246 | // since the amount of data in the fifo will always fit into the |
| 1247 | // edgeport buffer we do not need to check the write length |
| 1248 | |
| 1249 | // Do we have enough credits for this port to make it worthwhile |
| 1250 | // to bother queueing a write. If it's too small, say a few bytes, |
| 1251 | // it's better to wait for more credits so we can do a larger |
| 1252 | // write. |
| 1253 | if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits,EDGE_FW_BULK_MAX_PACKET_SIZE)) { |
| 1254 | dbg("%s(%d) Not enough credit - fifo %d TxCredit %d", __FUNCTION__, edge_port->port->number, fifo->count, edge_port->txCredits ); |
| 1255 | goto exit_send; |
| 1256 | } |
| 1257 | |
| 1258 | // lock this write |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 1259 | edge_port->write_in_progress = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1260 | |
| 1261 | // get a pointer to the write_urb |
| 1262 | urb = edge_port->write_urb; |
| 1263 | |
Jesper Juhl | 1bc3c9e | 2005-04-18 17:39:34 -0700 | [diff] [blame] | 1264 | /* make sure transfer buffer is freed */ |
| 1265 | kfree(urb->transfer_buffer); |
| 1266 | urb->transfer_buffer = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1267 | |
| 1268 | /* build the data header for the buffer and port that we are about to send out */ |
| 1269 | count = fifo->count; |
| 1270 | buffer = kmalloc (count+2, GFP_ATOMIC); |
| 1271 | if (buffer == NULL) { |
| 1272 | dev_err(&edge_port->port->dev, "%s - no more kernel memory...\n", __FUNCTION__); |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 1273 | edge_port->write_in_progress = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1274 | goto exit_send; |
| 1275 | } |
| 1276 | buffer[0] = IOSP_BUILD_DATA_HDR1 (edge_port->port->number - edge_port->port->serial->minor, count); |
| 1277 | buffer[1] = IOSP_BUILD_DATA_HDR2 (edge_port->port->number - edge_port->port->serial->minor, count); |
| 1278 | |
| 1279 | /* now copy our data */ |
| 1280 | bytesleft = fifo->size - fifo->tail; |
| 1281 | firsthalf = min (bytesleft, count); |
| 1282 | memcpy(&buffer[2], &fifo->fifo[fifo->tail], firsthalf); |
| 1283 | fifo->tail += firsthalf; |
| 1284 | fifo->count -= firsthalf; |
| 1285 | if (fifo->tail == fifo->size) { |
| 1286 | fifo->tail = 0; |
| 1287 | } |
| 1288 | |
| 1289 | secondhalf = count-firsthalf; |
| 1290 | if (secondhalf) { |
| 1291 | memcpy(&buffer[2+firsthalf], &fifo->fifo[fifo->tail], secondhalf); |
| 1292 | fifo->tail += secondhalf; |
| 1293 | fifo->count -= secondhalf; |
| 1294 | } |
| 1295 | |
| 1296 | if (count) |
| 1297 | usb_serial_debug_data(debug, &edge_port->port->dev, __FUNCTION__, count, &buffer[2]); |
| 1298 | |
| 1299 | /* fill up the urb with all of our data and submit it */ |
| 1300 | usb_fill_bulk_urb (urb, edge_serial->serial->dev, |
| 1301 | usb_sndbulkpipe(edge_serial->serial->dev, edge_serial->bulk_out_endpoint), |
| 1302 | buffer, count+2, edge_bulk_out_data_callback, edge_port); |
| 1303 | |
| 1304 | /* decrement the number of credits we have by the number we just sent */ |
| 1305 | edge_port->txCredits -= count; |
| 1306 | edge_port->icount.tx += count; |
| 1307 | |
| 1308 | urb->dev = edge_serial->serial->dev; |
| 1309 | status = usb_submit_urb(urb, GFP_ATOMIC); |
| 1310 | if (status) { |
| 1311 | /* something went wrong */ |
| 1312 | dev_err(&edge_port->port->dev, "%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n", __FUNCTION__, status); |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 1313 | edge_port->write_in_progress = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1314 | |
| 1315 | /* revert the credits as something bad happened. */ |
| 1316 | edge_port->txCredits += count; |
| 1317 | edge_port->icount.tx -= count; |
| 1318 | } |
| 1319 | dbg("%s wrote %d byte(s) TxCredit %d, Fifo %d", __FUNCTION__, count, edge_port->txCredits, fifo->count); |
| 1320 | |
| 1321 | exit_send: |
| 1322 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); |
| 1323 | } |
| 1324 | |
| 1325 | |
| 1326 | /***************************************************************************** |
| 1327 | * edge_write_room |
| 1328 | * this function is called by the tty driver when it wants to know how many |
| 1329 | * bytes of data we can accept for a specific port. |
| 1330 | * If successful, we return the amount of room that we have for this port |
| 1331 | * (the txCredits), |
| 1332 | * Otherwise we return a negative error number. |
| 1333 | *****************************************************************************/ |
| 1334 | static int edge_write_room (struct usb_serial_port *port) |
| 1335 | { |
| 1336 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
| 1337 | int room; |
| 1338 | unsigned long flags; |
| 1339 | |
| 1340 | dbg("%s", __FUNCTION__); |
| 1341 | |
| 1342 | if (edge_port == NULL) |
| 1343 | return -ENODEV; |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 1344 | if (edge_port->closePending) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1345 | return -ENODEV; |
| 1346 | |
| 1347 | dbg("%s - port %d", __FUNCTION__, port->number); |
| 1348 | |
| 1349 | if (!edge_port->open) { |
| 1350 | dbg("%s - port not opened", __FUNCTION__); |
| 1351 | return -EINVAL; |
| 1352 | } |
| 1353 | |
| 1354 | // total of both buffers is still txCredit |
| 1355 | spin_lock_irqsave(&edge_port->ep_lock, flags); |
| 1356 | room = edge_port->txCredits - edge_port->txfifo.count; |
| 1357 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); |
| 1358 | |
| 1359 | dbg("%s - returns %d", __FUNCTION__, room); |
| 1360 | return room; |
| 1361 | } |
| 1362 | |
| 1363 | |
| 1364 | /***************************************************************************** |
| 1365 | * edge_chars_in_buffer |
| 1366 | * this function is called by the tty driver when it wants to know how many |
| 1367 | * bytes of data we currently have outstanding in the port (data that has |
| 1368 | * been written, but hasn't made it out the port yet) |
| 1369 | * If successful, we return the number of bytes left to be written in the |
| 1370 | * system, |
| 1371 | * Otherwise we return a negative error number. |
| 1372 | *****************************************************************************/ |
| 1373 | static int edge_chars_in_buffer (struct usb_serial_port *port) |
| 1374 | { |
| 1375 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
| 1376 | int num_chars; |
| 1377 | unsigned long flags; |
| 1378 | |
| 1379 | dbg("%s", __FUNCTION__); |
| 1380 | |
| 1381 | if (edge_port == NULL) |
| 1382 | return -ENODEV; |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 1383 | if (edge_port->closePending) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1384 | return -ENODEV; |
| 1385 | |
| 1386 | if (!edge_port->open) { |
| 1387 | dbg("%s - port not opened", __FUNCTION__); |
| 1388 | return -EINVAL; |
| 1389 | } |
| 1390 | |
| 1391 | spin_lock_irqsave(&edge_port->ep_lock, flags); |
| 1392 | num_chars = edge_port->maxTxCredits - edge_port->txCredits + edge_port->txfifo.count; |
| 1393 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); |
| 1394 | if (num_chars) { |
| 1395 | dbg("%s(port %d) - returns %d", __FUNCTION__, port->number, num_chars); |
| 1396 | } |
| 1397 | |
| 1398 | return num_chars; |
| 1399 | } |
| 1400 | |
| 1401 | |
| 1402 | /***************************************************************************** |
| 1403 | * SerialThrottle |
| 1404 | * this function is called by the tty driver when it wants to stop the data |
| 1405 | * being read from the port. |
| 1406 | *****************************************************************************/ |
| 1407 | static void edge_throttle (struct usb_serial_port *port) |
| 1408 | { |
| 1409 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
| 1410 | struct tty_struct *tty; |
| 1411 | int status; |
| 1412 | |
| 1413 | dbg("%s - port %d", __FUNCTION__, port->number); |
| 1414 | |
| 1415 | if (edge_port == NULL) |
| 1416 | return; |
| 1417 | |
| 1418 | if (!edge_port->open) { |
| 1419 | dbg("%s - port not opened", __FUNCTION__); |
| 1420 | return; |
| 1421 | } |
| 1422 | |
| 1423 | tty = port->tty; |
| 1424 | if (!tty) { |
| 1425 | dbg ("%s - no tty available", __FUNCTION__); |
| 1426 | return; |
| 1427 | } |
| 1428 | |
| 1429 | /* if we are implementing XON/XOFF, send the stop character */ |
| 1430 | if (I_IXOFF(tty)) { |
| 1431 | unsigned char stop_char = STOP_CHAR(tty); |
| 1432 | status = edge_write (port, &stop_char, 1); |
| 1433 | if (status <= 0) { |
| 1434 | return; |
| 1435 | } |
| 1436 | } |
| 1437 | |
| 1438 | /* if we are implementing RTS/CTS, toggle that line */ |
| 1439 | if (tty->termios->c_cflag & CRTSCTS) { |
| 1440 | edge_port->shadowMCR &= ~MCR_RTS; |
| 1441 | status = send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR); |
| 1442 | if (status != 0) { |
| 1443 | return; |
| 1444 | } |
| 1445 | } |
| 1446 | |
| 1447 | return; |
| 1448 | } |
| 1449 | |
| 1450 | |
| 1451 | /***************************************************************************** |
| 1452 | * edge_unthrottle |
| 1453 | * this function is called by the tty driver when it wants to resume the data |
| 1454 | * being read from the port (called after SerialThrottle is called) |
| 1455 | *****************************************************************************/ |
| 1456 | static void edge_unthrottle (struct usb_serial_port *port) |
| 1457 | { |
| 1458 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
| 1459 | struct tty_struct *tty; |
| 1460 | int status; |
| 1461 | |
| 1462 | dbg("%s - port %d", __FUNCTION__, port->number); |
| 1463 | |
| 1464 | if (edge_port == NULL) |
| 1465 | return; |
| 1466 | |
| 1467 | if (!edge_port->open) { |
| 1468 | dbg("%s - port not opened", __FUNCTION__); |
| 1469 | return; |
| 1470 | } |
| 1471 | |
| 1472 | tty = port->tty; |
| 1473 | if (!tty) { |
| 1474 | dbg ("%s - no tty available", __FUNCTION__); |
| 1475 | return; |
| 1476 | } |
| 1477 | |
| 1478 | /* if we are implementing XON/XOFF, send the start character */ |
| 1479 | if (I_IXOFF(tty)) { |
| 1480 | unsigned char start_char = START_CHAR(tty); |
| 1481 | status = edge_write (port, &start_char, 1); |
| 1482 | if (status <= 0) { |
| 1483 | return; |
| 1484 | } |
| 1485 | } |
| 1486 | |
| 1487 | /* if we are implementing RTS/CTS, toggle that line */ |
| 1488 | if (tty->termios->c_cflag & CRTSCTS) { |
| 1489 | edge_port->shadowMCR |= MCR_RTS; |
| 1490 | status = send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR); |
| 1491 | if (status != 0) { |
| 1492 | return; |
| 1493 | } |
| 1494 | } |
| 1495 | |
| 1496 | return; |
| 1497 | } |
| 1498 | |
| 1499 | |
| 1500 | /***************************************************************************** |
| 1501 | * SerialSetTermios |
| 1502 | * this function is called by the tty driver when it wants to change the termios structure |
| 1503 | *****************************************************************************/ |
Alan Cox | 606d099 | 2006-12-08 02:38:45 -0800 | [diff] [blame] | 1504 | static void edge_set_termios (struct usb_serial_port *port, struct ktermios *old_termios) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1505 | { |
| 1506 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
| 1507 | struct tty_struct *tty = port->tty; |
| 1508 | unsigned int cflag; |
| 1509 | |
| 1510 | if (!port->tty || !port->tty->termios) { |
| 1511 | dbg ("%s - no tty or termios", __FUNCTION__); |
| 1512 | return; |
| 1513 | } |
| 1514 | |
| 1515 | cflag = tty->termios->c_cflag; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1516 | dbg("%s - clfag %08x iflag %08x", __FUNCTION__, |
| 1517 | tty->termios->c_cflag, tty->termios->c_iflag); |
| 1518 | if (old_termios) { |
| 1519 | dbg("%s - old clfag %08x old iflag %08x", __FUNCTION__, |
| 1520 | old_termios->c_cflag, old_termios->c_iflag); |
| 1521 | } |
| 1522 | |
| 1523 | dbg("%s - port %d", __FUNCTION__, port->number); |
| 1524 | |
| 1525 | if (edge_port == NULL) |
| 1526 | return; |
| 1527 | |
| 1528 | if (!edge_port->open) { |
| 1529 | dbg("%s - port not opened", __FUNCTION__); |
| 1530 | return; |
| 1531 | } |
| 1532 | |
| 1533 | /* change the port settings to the new ones specified */ |
| 1534 | change_port_settings (edge_port, old_termios); |
| 1535 | |
| 1536 | return; |
| 1537 | } |
| 1538 | |
| 1539 | |
| 1540 | /***************************************************************************** |
| 1541 | * get_lsr_info - get line status register info |
| 1542 | * |
| 1543 | * Purpose: Let user call ioctl() to get info when the UART physically |
| 1544 | * is emptied. On bus types like RS485, the transmitter must |
| 1545 | * release the bus after transmitting. This must be done when |
| 1546 | * the transmit shift register is empty, not be done when the |
| 1547 | * transmit holding register is empty. This functionality |
| 1548 | * allows an RS485 driver to be written in user space. |
| 1549 | *****************************************************************************/ |
| 1550 | static int get_lsr_info(struct edgeport_port *edge_port, unsigned int __user *value) |
| 1551 | { |
| 1552 | unsigned int result = 0; |
| 1553 | unsigned long flags; |
| 1554 | |
| 1555 | spin_lock_irqsave(&edge_port->ep_lock, flags); |
| 1556 | if (edge_port->maxTxCredits == edge_port->txCredits && |
| 1557 | edge_port->txfifo.count == 0) { |
| 1558 | dbg("%s -- Empty", __FUNCTION__); |
| 1559 | result = TIOCSER_TEMT; |
| 1560 | } |
| 1561 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); |
| 1562 | |
| 1563 | if (copy_to_user(value, &result, sizeof(int))) |
| 1564 | return -EFAULT; |
| 1565 | return 0; |
| 1566 | } |
| 1567 | |
| 1568 | static int get_number_bytes_avail(struct edgeport_port *edge_port, unsigned int __user *value) |
| 1569 | { |
| 1570 | unsigned int result = 0; |
| 1571 | struct tty_struct *tty = edge_port->port->tty; |
| 1572 | |
| 1573 | if (!tty) |
| 1574 | return -ENOIOCTLCMD; |
| 1575 | |
| 1576 | result = tty->read_cnt; |
| 1577 | |
| 1578 | dbg("%s(%d) = %d", __FUNCTION__, edge_port->port->number, result); |
| 1579 | if (copy_to_user(value, &result, sizeof(int))) |
| 1580 | return -EFAULT; |
| 1581 | //return 0; |
| 1582 | return -ENOIOCTLCMD; |
| 1583 | } |
| 1584 | |
| 1585 | static int edge_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear) |
| 1586 | { |
| 1587 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
| 1588 | unsigned int mcr; |
| 1589 | |
| 1590 | dbg("%s - port %d", __FUNCTION__, port->number); |
| 1591 | |
| 1592 | mcr = edge_port->shadowMCR; |
| 1593 | if (set & TIOCM_RTS) |
| 1594 | mcr |= MCR_RTS; |
| 1595 | if (set & TIOCM_DTR) |
| 1596 | mcr |= MCR_DTR; |
| 1597 | if (set & TIOCM_LOOP) |
| 1598 | mcr |= MCR_LOOPBACK; |
| 1599 | |
| 1600 | if (clear & TIOCM_RTS) |
| 1601 | mcr &= ~MCR_RTS; |
| 1602 | if (clear & TIOCM_DTR) |
| 1603 | mcr &= ~MCR_DTR; |
| 1604 | if (clear & TIOCM_LOOP) |
| 1605 | mcr &= ~MCR_LOOPBACK; |
| 1606 | |
| 1607 | edge_port->shadowMCR = mcr; |
| 1608 | |
| 1609 | send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR); |
| 1610 | |
| 1611 | return 0; |
| 1612 | } |
| 1613 | |
| 1614 | static int edge_tiocmget(struct usb_serial_port *port, struct file *file) |
| 1615 | { |
| 1616 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
| 1617 | unsigned int result = 0; |
| 1618 | unsigned int msr; |
| 1619 | unsigned int mcr; |
| 1620 | |
| 1621 | dbg("%s - port %d", __FUNCTION__, port->number); |
| 1622 | |
| 1623 | msr = edge_port->shadowMSR; |
| 1624 | mcr = edge_port->shadowMCR; |
| 1625 | result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ |
| 1626 | | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ |
| 1627 | | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ |
| 1628 | | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */ |
| 1629 | | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ |
| 1630 | | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ |
| 1631 | |
| 1632 | |
| 1633 | dbg("%s -- %x", __FUNCTION__, result); |
| 1634 | |
| 1635 | return result; |
| 1636 | } |
| 1637 | |
| 1638 | static int get_serial_info(struct edgeport_port *edge_port, struct serial_struct __user *retinfo) |
| 1639 | { |
| 1640 | struct serial_struct tmp; |
| 1641 | |
| 1642 | if (!retinfo) |
| 1643 | return -EFAULT; |
| 1644 | |
| 1645 | memset(&tmp, 0, sizeof(tmp)); |
| 1646 | |
| 1647 | tmp.type = PORT_16550A; |
| 1648 | tmp.line = edge_port->port->serial->minor; |
| 1649 | tmp.port = edge_port->port->number; |
| 1650 | tmp.irq = 0; |
| 1651 | tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; |
| 1652 | tmp.xmit_fifo_size = edge_port->maxTxCredits; |
| 1653 | tmp.baud_base = 9600; |
| 1654 | tmp.close_delay = 5*HZ; |
| 1655 | tmp.closing_wait = 30*HZ; |
| 1656 | // tmp.custom_divisor = state->custom_divisor; |
| 1657 | // tmp.hub6 = state->hub6; |
| 1658 | // tmp.io_type = state->io_type; |
| 1659 | |
| 1660 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) |
| 1661 | return -EFAULT; |
| 1662 | return 0; |
| 1663 | } |
| 1664 | |
| 1665 | |
| 1666 | |
| 1667 | /***************************************************************************** |
| 1668 | * SerialIoctl |
| 1669 | * this function handles any ioctl calls to the driver |
| 1670 | *****************************************************************************/ |
| 1671 | static int edge_ioctl (struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg) |
| 1672 | { |
| 1673 | DEFINE_WAIT(wait); |
| 1674 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
| 1675 | struct async_icount cnow; |
| 1676 | struct async_icount cprev; |
| 1677 | struct serial_icounter_struct icount; |
| 1678 | |
| 1679 | dbg("%s - port %d, cmd = 0x%x", __FUNCTION__, port->number, cmd); |
| 1680 | |
| 1681 | switch (cmd) { |
| 1682 | // return number of bytes available |
| 1683 | case TIOCINQ: |
| 1684 | dbg("%s (%d) TIOCINQ", __FUNCTION__, port->number); |
| 1685 | return get_number_bytes_avail(edge_port, (unsigned int __user *) arg); |
| 1686 | break; |
| 1687 | |
| 1688 | case TIOCSERGETLSR: |
| 1689 | dbg("%s (%d) TIOCSERGETLSR", __FUNCTION__, port->number); |
| 1690 | return get_lsr_info(edge_port, (unsigned int __user *) arg); |
| 1691 | return 0; |
| 1692 | |
| 1693 | case TIOCGSERIAL: |
| 1694 | dbg("%s (%d) TIOCGSERIAL", __FUNCTION__, port->number); |
| 1695 | return get_serial_info(edge_port, (struct serial_struct __user *) arg); |
| 1696 | |
| 1697 | case TIOCSSERIAL: |
| 1698 | dbg("%s (%d) TIOCSSERIAL", __FUNCTION__, port->number); |
| 1699 | break; |
| 1700 | |
| 1701 | case TIOCMIWAIT: |
| 1702 | dbg("%s (%d) TIOCMIWAIT", __FUNCTION__, port->number); |
| 1703 | cprev = edge_port->icount; |
| 1704 | while (1) { |
| 1705 | prepare_to_wait(&edge_port->delta_msr_wait, &wait, TASK_INTERRUPTIBLE); |
| 1706 | schedule(); |
| 1707 | finish_wait(&edge_port->delta_msr_wait, &wait); |
| 1708 | /* see if a signal did it */ |
| 1709 | if (signal_pending(current)) |
| 1710 | return -ERESTARTSYS; |
| 1711 | cnow = edge_port->icount; |
| 1712 | if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && |
| 1713 | cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) |
| 1714 | return -EIO; /* no change => error */ |
| 1715 | if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || |
| 1716 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || |
| 1717 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || |
| 1718 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) { |
| 1719 | return 0; |
| 1720 | } |
| 1721 | cprev = cnow; |
| 1722 | } |
| 1723 | /* NOTREACHED */ |
| 1724 | break; |
| 1725 | |
| 1726 | case TIOCGICOUNT: |
| 1727 | cnow = edge_port->icount; |
| 1728 | memset(&icount, 0, sizeof(icount)); |
| 1729 | icount.cts = cnow.cts; |
| 1730 | icount.dsr = cnow.dsr; |
| 1731 | icount.rng = cnow.rng; |
| 1732 | icount.dcd = cnow.dcd; |
| 1733 | icount.rx = cnow.rx; |
| 1734 | icount.tx = cnow.tx; |
| 1735 | icount.frame = cnow.frame; |
| 1736 | icount.overrun = cnow.overrun; |
| 1737 | icount.parity = cnow.parity; |
| 1738 | icount.brk = cnow.brk; |
| 1739 | icount.buf_overrun = cnow.buf_overrun; |
| 1740 | |
| 1741 | dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d", __FUNCTION__, port->number, icount.rx, icount.tx ); |
| 1742 | if (copy_to_user((void __user *)arg, &icount, sizeof(icount))) |
| 1743 | return -EFAULT; |
| 1744 | return 0; |
| 1745 | } |
| 1746 | |
| 1747 | return -ENOIOCTLCMD; |
| 1748 | } |
| 1749 | |
| 1750 | |
| 1751 | /***************************************************************************** |
| 1752 | * SerialBreak |
| 1753 | * this function sends a break to the port |
| 1754 | *****************************************************************************/ |
| 1755 | static void edge_break (struct usb_serial_port *port, int break_state) |
| 1756 | { |
| 1757 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 1758 | struct edgeport_serial *edge_serial = usb_get_serial_data(port->serial); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1759 | int status; |
| 1760 | |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 1761 | if ((!edge_serial->is_epic) || |
| 1762 | ((edge_serial->is_epic) && |
| 1763 | (edge_serial->epic_descriptor.Supports.IOSPChase))) { |
| 1764 | /* flush and chase */ |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 1765 | edge_port->chaseResponsePending = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1766 | |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 1767 | dbg("%s - Sending IOSP_CMD_CHASE_PORT", __FUNCTION__); |
| 1768 | status = send_iosp_ext_cmd (edge_port, IOSP_CMD_CHASE_PORT, 0); |
| 1769 | if (status == 0) { |
| 1770 | // block until chase finished |
| 1771 | block_until_chase_response(edge_port); |
| 1772 | } else { |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 1773 | edge_port->chaseResponsePending = false; |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 1774 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1775 | } |
| 1776 | |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 1777 | if ((!edge_serial->is_epic) || |
| 1778 | ((edge_serial->is_epic) && |
| 1779 | (edge_serial->epic_descriptor.Supports.IOSPSetClrBreak))) { |
| 1780 | if (break_state == -1) { |
| 1781 | dbg("%s - Sending IOSP_CMD_SET_BREAK", __FUNCTION__); |
| 1782 | status = send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_BREAK, 0); |
| 1783 | } else { |
| 1784 | dbg("%s - Sending IOSP_CMD_CLEAR_BREAK", __FUNCTION__); |
| 1785 | status = send_iosp_ext_cmd (edge_port, IOSP_CMD_CLEAR_BREAK, 0); |
| 1786 | } |
| 1787 | if (status) { |
| 1788 | dbg("%s - error sending break set/clear command.", __FUNCTION__); |
| 1789 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1790 | } |
| 1791 | |
| 1792 | return; |
| 1793 | } |
| 1794 | |
| 1795 | |
| 1796 | /***************************************************************************** |
| 1797 | * process_rcvd_data |
| 1798 | * this function handles the data received on the bulk in pipe. |
| 1799 | *****************************************************************************/ |
| 1800 | static void process_rcvd_data (struct edgeport_serial *edge_serial, unsigned char * buffer, __u16 bufferLength) |
| 1801 | { |
| 1802 | struct usb_serial_port *port; |
| 1803 | struct edgeport_port *edge_port; |
| 1804 | struct tty_struct *tty; |
| 1805 | __u16 lastBufferLength; |
| 1806 | __u16 rxLen; |
| 1807 | |
| 1808 | dbg("%s", __FUNCTION__); |
| 1809 | |
| 1810 | lastBufferLength = bufferLength + 1; |
| 1811 | |
| 1812 | while (bufferLength > 0) { |
| 1813 | /* failsafe incase we get a message that we don't understand */ |
| 1814 | if (lastBufferLength == bufferLength) { |
| 1815 | dbg("%s - stuck in loop, exiting it.", __FUNCTION__); |
| 1816 | break; |
| 1817 | } |
| 1818 | lastBufferLength = bufferLength; |
| 1819 | |
| 1820 | switch (edge_serial->rxState) { |
| 1821 | case EXPECT_HDR1: |
| 1822 | edge_serial->rxHeader1 = *buffer; |
| 1823 | ++buffer; |
| 1824 | --bufferLength; |
| 1825 | |
| 1826 | if (bufferLength == 0) { |
| 1827 | edge_serial->rxState = EXPECT_HDR2; |
| 1828 | break; |
| 1829 | } |
| 1830 | /* otherwise, drop on through */ |
| 1831 | |
| 1832 | case EXPECT_HDR2: |
| 1833 | edge_serial->rxHeader2 = *buffer; |
| 1834 | ++buffer; |
| 1835 | --bufferLength; |
| 1836 | |
| 1837 | dbg("%s - Hdr1=%02X Hdr2=%02X", __FUNCTION__, edge_serial->rxHeader1, edge_serial->rxHeader2); |
| 1838 | |
| 1839 | // Process depending on whether this header is |
| 1840 | // data or status |
| 1841 | |
| 1842 | if (IS_CMD_STAT_HDR(edge_serial->rxHeader1)) { |
| 1843 | // Decode this status header and goto EXPECT_HDR1 (if we |
| 1844 | // can process the status with only 2 bytes), or goto |
| 1845 | // EXPECT_HDR3 to get the third byte. |
| 1846 | |
| 1847 | edge_serial->rxPort = IOSP_GET_HDR_PORT(edge_serial->rxHeader1); |
| 1848 | edge_serial->rxStatusCode = IOSP_GET_STATUS_CODE(edge_serial->rxHeader1); |
| 1849 | |
| 1850 | if (!IOSP_STATUS_IS_2BYTE(edge_serial->rxStatusCode)) { |
| 1851 | // This status needs additional bytes. Save what we have |
| 1852 | // and then wait for more data. |
| 1853 | edge_serial->rxStatusParam = edge_serial->rxHeader2; |
| 1854 | |
| 1855 | edge_serial->rxState = EXPECT_HDR3; |
| 1856 | break; |
| 1857 | } |
| 1858 | |
| 1859 | // We have all the header bytes, process the status now |
| 1860 | process_rcvd_status (edge_serial, edge_serial->rxHeader2, 0); |
| 1861 | edge_serial->rxState = EXPECT_HDR1; |
| 1862 | break; |
| 1863 | } else { |
| 1864 | edge_serial->rxPort = IOSP_GET_HDR_PORT(edge_serial->rxHeader1); |
| 1865 | edge_serial->rxBytesRemaining = IOSP_GET_HDR_DATA_LEN(edge_serial->rxHeader1, edge_serial->rxHeader2); |
| 1866 | |
| 1867 | dbg("%s - Data for Port %u Len %u", __FUNCTION__, edge_serial->rxPort, edge_serial->rxBytesRemaining); |
| 1868 | |
| 1869 | //ASSERT( DevExt->RxPort < DevExt->NumPorts ); |
| 1870 | //ASSERT( DevExt->RxBytesRemaining < IOSP_MAX_DATA_LENGTH ); |
| 1871 | |
| 1872 | if (bufferLength == 0 ) { |
| 1873 | edge_serial->rxState = EXPECT_DATA; |
| 1874 | break; |
| 1875 | } |
| 1876 | // Else, drop through |
| 1877 | } |
| 1878 | |
| 1879 | case EXPECT_DATA: // Expect data |
| 1880 | |
| 1881 | if (bufferLength < edge_serial->rxBytesRemaining) { |
| 1882 | rxLen = bufferLength; |
| 1883 | edge_serial->rxState = EXPECT_DATA; // Expect data to start next buffer |
| 1884 | } else { |
| 1885 | // BufLen >= RxBytesRemaining |
| 1886 | rxLen = edge_serial->rxBytesRemaining; |
| 1887 | edge_serial->rxState = EXPECT_HDR1; // Start another header next time |
| 1888 | } |
| 1889 | |
| 1890 | bufferLength -= rxLen; |
| 1891 | edge_serial->rxBytesRemaining -= rxLen; |
| 1892 | |
| 1893 | /* spit this data back into the tty driver if this port is open */ |
| 1894 | if (rxLen) { |
| 1895 | port = edge_serial->serial->port[edge_serial->rxPort]; |
| 1896 | edge_port = usb_get_serial_port_data(port); |
| 1897 | if (edge_port->open) { |
| 1898 | tty = edge_port->port->tty; |
| 1899 | if (tty) { |
| 1900 | dbg("%s - Sending %d bytes to TTY for port %d", __FUNCTION__, rxLen, edge_serial->rxPort); |
| 1901 | edge_tty_recv(&edge_serial->serial->dev->dev, tty, buffer, rxLen); |
| 1902 | } |
| 1903 | edge_port->icount.rx += rxLen; |
| 1904 | } |
| 1905 | buffer += rxLen; |
| 1906 | } |
| 1907 | |
| 1908 | break; |
| 1909 | |
| 1910 | case EXPECT_HDR3: // Expect 3rd byte of status header |
| 1911 | edge_serial->rxHeader3 = *buffer; |
| 1912 | ++buffer; |
| 1913 | --bufferLength; |
| 1914 | |
| 1915 | // We have all the header bytes, process the status now |
| 1916 | process_rcvd_status (edge_serial, edge_serial->rxStatusParam, edge_serial->rxHeader3); |
| 1917 | edge_serial->rxState = EXPECT_HDR1; |
| 1918 | break; |
| 1919 | |
| 1920 | } |
| 1921 | } |
| 1922 | } |
| 1923 | |
| 1924 | |
| 1925 | /***************************************************************************** |
| 1926 | * process_rcvd_status |
| 1927 | * this function handles the any status messages received on the bulk in pipe. |
| 1928 | *****************************************************************************/ |
| 1929 | static void process_rcvd_status (struct edgeport_serial *edge_serial, __u8 byte2, __u8 byte3) |
| 1930 | { |
| 1931 | struct usb_serial_port *port; |
| 1932 | struct edgeport_port *edge_port; |
| 1933 | __u8 code = edge_serial->rxStatusCode; |
| 1934 | |
| 1935 | /* switch the port pointer to the one being currently talked about */ |
| 1936 | port = edge_serial->serial->port[edge_serial->rxPort]; |
| 1937 | edge_port = usb_get_serial_port_data(port); |
| 1938 | if (edge_port == NULL) { |
| 1939 | dev_err(&edge_serial->serial->dev->dev, "%s - edge_port == NULL for port %d\n", __FUNCTION__, edge_serial->rxPort); |
| 1940 | return; |
| 1941 | } |
| 1942 | |
| 1943 | dbg("%s - port %d", __FUNCTION__, edge_serial->rxPort); |
| 1944 | |
| 1945 | if (code == IOSP_EXT_STATUS) { |
| 1946 | switch (byte2) { |
| 1947 | case IOSP_EXT_STATUS_CHASE_RSP: |
| 1948 | // we want to do EXT status regardless of port open/closed |
| 1949 | dbg("%s - Port %u EXT CHASE_RSP Data = %02x", __FUNCTION__, edge_serial->rxPort, byte3 ); |
| 1950 | // Currently, the only EXT_STATUS is Chase, so process here instead of one more call |
| 1951 | // to one more subroutine. If/when more EXT_STATUS, there'll be more work to do. |
| 1952 | // Also, we currently clear flag and close the port regardless of content of above's Byte3. |
| 1953 | // We could choose to do something else when Byte3 says Timeout on Chase from Edgeport, |
| 1954 | // like wait longer in block_until_chase_response, but for now we don't. |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 1955 | edge_port->chaseResponsePending = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1956 | wake_up (&edge_port->wait_chase); |
| 1957 | return; |
| 1958 | |
| 1959 | case IOSP_EXT_STATUS_RX_CHECK_RSP: |
| 1960 | dbg("%s ========== Port %u CHECK_RSP Sequence = %02x =============\n", __FUNCTION__, edge_serial->rxPort, byte3 ); |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 1961 | //Port->RxCheckRsp = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1962 | return; |
| 1963 | } |
| 1964 | } |
| 1965 | |
| 1966 | if (code == IOSP_STATUS_OPEN_RSP) { |
| 1967 | edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3); |
| 1968 | edge_port->maxTxCredits = edge_port->txCredits; |
| 1969 | dbg("%s - Port %u Open Response Inital MSR = %02x TxBufferSize = %d", __FUNCTION__, edge_serial->rxPort, byte2, edge_port->txCredits); |
| 1970 | handle_new_msr (edge_port, byte2); |
| 1971 | |
| 1972 | /* send the current line settings to the port so we are in sync with any further termios calls */ |
| 1973 | if (edge_port->port->tty) |
| 1974 | change_port_settings (edge_port, edge_port->port->tty->termios); |
| 1975 | |
| 1976 | /* we have completed the open */ |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 1977 | edge_port->openPending = false; |
| 1978 | edge_port->open = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1979 | wake_up(&edge_port->wait_open); |
| 1980 | return; |
| 1981 | } |
| 1982 | |
| 1983 | // If port is closed, silently discard all rcvd status. We can |
| 1984 | // have cases where buffered status is received AFTER the close |
| 1985 | // port command is sent to the Edgeport. |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 1986 | if (!edge_port->open || edge_port->closePending) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1987 | return; |
| 1988 | } |
| 1989 | |
| 1990 | switch (code) { |
| 1991 | // Not currently sent by Edgeport |
| 1992 | case IOSP_STATUS_LSR: |
| 1993 | dbg("%s - Port %u LSR Status = %02x", __FUNCTION__, edge_serial->rxPort, byte2); |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 1994 | handle_new_lsr(edge_port, false, byte2, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1995 | break; |
| 1996 | |
| 1997 | case IOSP_STATUS_LSR_DATA: |
| 1998 | dbg("%s - Port %u LSR Status = %02x, Data = %02x", __FUNCTION__, edge_serial->rxPort, byte2, byte3); |
| 1999 | // byte2 is LSR Register |
| 2000 | // byte3 is broken data byte |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 2001 | handle_new_lsr(edge_port, true, byte2, byte3); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2002 | break; |
| 2003 | // |
| 2004 | // case IOSP_EXT_4_STATUS: |
| 2005 | // dbg("%s - Port %u LSR Status = %02x Data = %02x", __FUNCTION__, edge_serial->rxPort, byte2, byte3); |
| 2006 | // break; |
| 2007 | // |
| 2008 | case IOSP_STATUS_MSR: |
| 2009 | dbg("%s - Port %u MSR Status = %02x", __FUNCTION__, edge_serial->rxPort, byte2); |
| 2010 | |
| 2011 | // Process this new modem status and generate appropriate |
| 2012 | // events, etc, based on the new status. This routine |
| 2013 | // also saves the MSR in Port->ShadowMsr. |
| 2014 | handle_new_msr(edge_port, byte2); |
| 2015 | break; |
| 2016 | |
| 2017 | default: |
| 2018 | dbg("%s - Unrecognized IOSP status code %u\n", __FUNCTION__, code); |
| 2019 | break; |
| 2020 | } |
| 2021 | |
| 2022 | return; |
| 2023 | } |
| 2024 | |
| 2025 | |
| 2026 | /***************************************************************************** |
| 2027 | * edge_tty_recv |
| 2028 | * this function passes data on to the tty flip buffer |
| 2029 | *****************************************************************************/ |
| 2030 | static void edge_tty_recv(struct device *dev, struct tty_struct *tty, unsigned char *data, int length) |
| 2031 | { |
| 2032 | int cnt; |
| 2033 | |
| 2034 | do { |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 2035 | cnt = tty_buffer_request_room(tty, length); |
| 2036 | if (cnt < length) { |
| 2037 | dev_err(dev, "%s - dropping data, %d bytes lost\n", |
| 2038 | __FUNCTION__, length - cnt); |
| 2039 | if(cnt == 0) |
| 2040 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2041 | } |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 2042 | tty_insert_flip_string(tty, data, cnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2043 | data += cnt; |
| 2044 | length -= cnt; |
| 2045 | } while (length > 0); |
| 2046 | |
| 2047 | tty_flip_buffer_push(tty); |
| 2048 | } |
| 2049 | |
| 2050 | |
| 2051 | /***************************************************************************** |
| 2052 | * handle_new_msr |
| 2053 | * this function handles any change to the msr register for a port. |
| 2054 | *****************************************************************************/ |
| 2055 | static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr) |
| 2056 | { |
| 2057 | struct async_icount *icount; |
| 2058 | |
| 2059 | dbg("%s %02x", __FUNCTION__, newMsr); |
| 2060 | |
| 2061 | if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { |
| 2062 | icount = &edge_port->icount; |
| 2063 | |
| 2064 | /* update input line counters */ |
| 2065 | if (newMsr & EDGEPORT_MSR_DELTA_CTS) { |
| 2066 | icount->cts++; |
| 2067 | } |
| 2068 | if (newMsr & EDGEPORT_MSR_DELTA_DSR) { |
| 2069 | icount->dsr++; |
| 2070 | } |
| 2071 | if (newMsr & EDGEPORT_MSR_DELTA_CD) { |
| 2072 | icount->dcd++; |
| 2073 | } |
| 2074 | if (newMsr & EDGEPORT_MSR_DELTA_RI) { |
| 2075 | icount->rng++; |
| 2076 | } |
| 2077 | wake_up_interruptible(&edge_port->delta_msr_wait); |
| 2078 | } |
| 2079 | |
| 2080 | /* Save the new modem status */ |
| 2081 | edge_port->shadowMSR = newMsr & 0xf0; |
| 2082 | |
| 2083 | return; |
| 2084 | } |
| 2085 | |
| 2086 | |
| 2087 | /***************************************************************************** |
| 2088 | * handle_new_lsr |
| 2089 | * this function handles any change to the lsr register for a port. |
| 2090 | *****************************************************************************/ |
| 2091 | static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, __u8 lsr, __u8 data) |
| 2092 | { |
| 2093 | __u8 newLsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK)); |
| 2094 | struct async_icount *icount; |
| 2095 | |
| 2096 | dbg("%s - %02x", __FUNCTION__, newLsr); |
| 2097 | |
| 2098 | edge_port->shadowLSR = lsr; |
| 2099 | |
| 2100 | if (newLsr & LSR_BREAK) { |
| 2101 | // |
| 2102 | // Parity and Framing errors only count if they |
| 2103 | // occur exclusive of a break being |
| 2104 | // received. |
| 2105 | // |
| 2106 | newLsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK); |
| 2107 | } |
| 2108 | |
| 2109 | /* Place LSR data byte into Rx buffer */ |
| 2110 | if (lsrData && edge_port->port->tty) |
| 2111 | edge_tty_recv(&edge_port->port->dev, edge_port->port->tty, &data, 1); |
| 2112 | |
| 2113 | /* update input line counters */ |
| 2114 | icount = &edge_port->icount; |
| 2115 | if (newLsr & LSR_BREAK) { |
| 2116 | icount->brk++; |
| 2117 | } |
| 2118 | if (newLsr & LSR_OVER_ERR) { |
| 2119 | icount->overrun++; |
| 2120 | } |
| 2121 | if (newLsr & LSR_PAR_ERR) { |
| 2122 | icount->parity++; |
| 2123 | } |
| 2124 | if (newLsr & LSR_FRM_ERR) { |
| 2125 | icount->frame++; |
| 2126 | } |
| 2127 | |
| 2128 | return; |
| 2129 | } |
| 2130 | |
| 2131 | |
| 2132 | /**************************************************************************** |
| 2133 | * sram_write |
| 2134 | * writes a number of bytes to the Edgeport device's sram starting at the |
| 2135 | * given address. |
| 2136 | * If successful returns the number of bytes written, otherwise it returns |
| 2137 | * a negative error number of the problem. |
| 2138 | ****************************************************************************/ |
| 2139 | static int sram_write (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data) |
| 2140 | { |
| 2141 | int result; |
| 2142 | __u16 current_length; |
| 2143 | unsigned char *transfer_buffer; |
| 2144 | |
| 2145 | dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, length); |
| 2146 | |
| 2147 | transfer_buffer = kmalloc (64, GFP_KERNEL); |
| 2148 | if (!transfer_buffer) { |
| 2149 | dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 64); |
| 2150 | return -ENOMEM; |
| 2151 | } |
| 2152 | |
| 2153 | /* need to split these writes up into 64 byte chunks */ |
| 2154 | result = 0; |
| 2155 | while (length > 0) { |
| 2156 | if (length > 64) { |
| 2157 | current_length = 64; |
| 2158 | } else { |
| 2159 | current_length = length; |
| 2160 | } |
| 2161 | // dbg("%s - writing %x, %x, %d", __FUNCTION__, extAddr, addr, current_length); |
| 2162 | memcpy (transfer_buffer, data, current_length); |
| 2163 | result = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), USB_REQUEST_ION_WRITE_RAM, |
| 2164 | 0x40, addr, extAddr, transfer_buffer, current_length, 300); |
| 2165 | if (result < 0) |
| 2166 | break; |
| 2167 | length -= current_length; |
| 2168 | addr += current_length; |
| 2169 | data += current_length; |
| 2170 | } |
| 2171 | |
| 2172 | kfree (transfer_buffer); |
| 2173 | return result; |
| 2174 | } |
| 2175 | |
| 2176 | |
| 2177 | /**************************************************************************** |
| 2178 | * rom_write |
| 2179 | * writes a number of bytes to the Edgeport device's ROM starting at the |
| 2180 | * given address. |
| 2181 | * If successful returns the number of bytes written, otherwise it returns |
| 2182 | * a negative error number of the problem. |
| 2183 | ****************************************************************************/ |
| 2184 | static int rom_write (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data) |
| 2185 | { |
| 2186 | int result; |
| 2187 | __u16 current_length; |
| 2188 | unsigned char *transfer_buffer; |
| 2189 | |
| 2190 | // dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, length); |
| 2191 | |
| 2192 | transfer_buffer = kmalloc (64, GFP_KERNEL); |
| 2193 | if (!transfer_buffer) { |
| 2194 | dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 64); |
| 2195 | return -ENOMEM; |
| 2196 | } |
| 2197 | |
| 2198 | /* need to split these writes up into 64 byte chunks */ |
| 2199 | result = 0; |
| 2200 | while (length > 0) { |
| 2201 | if (length > 64) { |
| 2202 | current_length = 64; |
| 2203 | } else { |
| 2204 | current_length = length; |
| 2205 | } |
| 2206 | // dbg("%s - writing %x, %x, %d", __FUNCTION__, extAddr, addr, current_length); |
| 2207 | memcpy (transfer_buffer, data, current_length); |
| 2208 | result = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), USB_REQUEST_ION_WRITE_ROM, |
| 2209 | 0x40, addr, extAddr, transfer_buffer, current_length, 300); |
| 2210 | if (result < 0) |
| 2211 | break; |
| 2212 | length -= current_length; |
| 2213 | addr += current_length; |
| 2214 | data += current_length; |
| 2215 | } |
| 2216 | |
| 2217 | kfree (transfer_buffer); |
| 2218 | return result; |
| 2219 | } |
| 2220 | |
| 2221 | |
| 2222 | /**************************************************************************** |
| 2223 | * rom_read |
| 2224 | * reads a number of bytes from the Edgeport device starting at the given |
| 2225 | * address. |
| 2226 | * If successful returns the number of bytes read, otherwise it returns |
| 2227 | * a negative error number of the problem. |
| 2228 | ****************************************************************************/ |
| 2229 | static int rom_read (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data) |
| 2230 | { |
| 2231 | int result; |
| 2232 | __u16 current_length; |
| 2233 | unsigned char *transfer_buffer; |
| 2234 | |
| 2235 | dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, length); |
| 2236 | |
| 2237 | transfer_buffer = kmalloc (64, GFP_KERNEL); |
| 2238 | if (!transfer_buffer) { |
| 2239 | dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 64); |
| 2240 | return -ENOMEM; |
| 2241 | } |
| 2242 | |
| 2243 | /* need to split these reads up into 64 byte chunks */ |
| 2244 | result = 0; |
| 2245 | while (length > 0) { |
| 2246 | if (length > 64) { |
| 2247 | current_length = 64; |
| 2248 | } else { |
| 2249 | current_length = length; |
| 2250 | } |
| 2251 | // dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, current_length); |
| 2252 | result = usb_control_msg (serial->dev, usb_rcvctrlpipe(serial->dev, 0), USB_REQUEST_ION_READ_ROM, |
| 2253 | 0xC0, addr, extAddr, transfer_buffer, current_length, 300); |
| 2254 | if (result < 0) |
| 2255 | break; |
| 2256 | memcpy (data, transfer_buffer, current_length); |
| 2257 | length -= current_length; |
| 2258 | addr += current_length; |
| 2259 | data += current_length; |
| 2260 | } |
| 2261 | |
| 2262 | kfree (transfer_buffer); |
| 2263 | return result; |
| 2264 | } |
| 2265 | |
| 2266 | |
| 2267 | /**************************************************************************** |
| 2268 | * send_iosp_ext_cmd |
| 2269 | * Is used to send a IOSP message to the Edgeport device |
| 2270 | ****************************************************************************/ |
| 2271 | static int send_iosp_ext_cmd (struct edgeport_port *edge_port, __u8 command, __u8 param) |
| 2272 | { |
| 2273 | unsigned char *buffer; |
| 2274 | unsigned char *currentCommand; |
| 2275 | int length = 0; |
| 2276 | int status = 0; |
| 2277 | |
| 2278 | dbg("%s - %d, %d", __FUNCTION__, command, param); |
| 2279 | |
| 2280 | buffer = kmalloc (10, GFP_ATOMIC); |
| 2281 | if (!buffer) { |
| 2282 | dev_err(&edge_port->port->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 10); |
| 2283 | return -ENOMEM; |
| 2284 | } |
| 2285 | |
| 2286 | currentCommand = buffer; |
| 2287 | |
| 2288 | MAKE_CMD_EXT_CMD (¤tCommand, &length, |
| 2289 | edge_port->port->number - edge_port->port->serial->minor, |
| 2290 | command, param); |
| 2291 | |
| 2292 | status = write_cmd_usb (edge_port, buffer, length); |
| 2293 | if (status) { |
| 2294 | /* something bad happened, let's free up the memory */ |
| 2295 | kfree(buffer); |
| 2296 | } |
| 2297 | |
| 2298 | return status; |
| 2299 | } |
| 2300 | |
| 2301 | |
| 2302 | /***************************************************************************** |
| 2303 | * write_cmd_usb |
| 2304 | * this function writes the given buffer out to the bulk write endpoint. |
| 2305 | *****************************************************************************/ |
| 2306 | static int write_cmd_usb (struct edgeport_port *edge_port, unsigned char *buffer, int length) |
| 2307 | { |
| 2308 | struct edgeport_serial *edge_serial = usb_get_serial_data(edge_port->port->serial); |
| 2309 | int status = 0; |
| 2310 | struct urb *urb; |
| 2311 | int timeout; |
| 2312 | |
| 2313 | usb_serial_debug_data(debug, &edge_port->port->dev, __FUNCTION__, length, buffer); |
| 2314 | |
| 2315 | /* Allocate our next urb */ |
| 2316 | urb = usb_alloc_urb (0, GFP_ATOMIC); |
| 2317 | if (!urb) |
| 2318 | return -ENOMEM; |
| 2319 | |
Oliver Neukum | 96c706e | 2007-03-15 15:27:17 +0100 | [diff] [blame] | 2320 | atomic_inc(&CmdUrbs); |
| 2321 | dbg("%s - ALLOCATE URB %p (outstanding %d)", __FUNCTION__, urb, atomic_read(&CmdUrbs)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2322 | |
| 2323 | usb_fill_bulk_urb (urb, edge_serial->serial->dev, |
| 2324 | usb_sndbulkpipe(edge_serial->serial->dev, edge_serial->bulk_out_endpoint), |
| 2325 | buffer, length, edge_bulk_out_cmd_callback, edge_port); |
| 2326 | |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 2327 | edge_port->commandPending = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2328 | status = usb_submit_urb(urb, GFP_ATOMIC); |
| 2329 | |
| 2330 | if (status) { |
| 2331 | /* something went wrong */ |
| 2332 | dev_err(&edge_port->port->dev, "%s - usb_submit_urb(write command) failed, status = %d\n", __FUNCTION__, status); |
| 2333 | usb_kill_urb(urb); |
| 2334 | usb_free_urb(urb); |
Oliver Neukum | 96c706e | 2007-03-15 15:27:17 +0100 | [diff] [blame] | 2335 | atomic_dec(&CmdUrbs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2336 | return status; |
| 2337 | } |
| 2338 | |
| 2339 | // wait for command to finish |
| 2340 | timeout = COMMAND_TIMEOUT; |
| 2341 | #if 0 |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 2342 | wait_event (&edge_port->wait_command, !edge_port->commandPending); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2343 | |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 2344 | if (edge_port->commandPending) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2345 | /* command timed out */ |
| 2346 | dbg("%s - command timed out", __FUNCTION__); |
| 2347 | status = -EINVAL; |
| 2348 | } |
| 2349 | #endif |
| 2350 | return status; |
| 2351 | } |
| 2352 | |
| 2353 | |
| 2354 | /***************************************************************************** |
| 2355 | * send_cmd_write_baud_rate |
| 2356 | * this function sends the proper command to change the baud rate of the |
| 2357 | * specified port. |
| 2358 | *****************************************************************************/ |
| 2359 | static int send_cmd_write_baud_rate (struct edgeport_port *edge_port, int baudRate) |
| 2360 | { |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 2361 | struct edgeport_serial *edge_serial = usb_get_serial_data(edge_port->port->serial); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2362 | unsigned char *cmdBuffer; |
| 2363 | unsigned char *currCmd; |
| 2364 | int cmdLen = 0; |
| 2365 | int divisor; |
| 2366 | int status; |
| 2367 | unsigned char number = edge_port->port->number - edge_port->port->serial->minor; |
| 2368 | |
Adam Kropelin | bc71e47 | 2007-07-29 11:03:29 -0400 | [diff] [blame] | 2369 | if (edge_serial->is_epic && |
| 2370 | !edge_serial->epic_descriptor.Supports.IOSPSetBaudRate) { |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 2371 | dbg("SendCmdWriteBaudRate - NOT Setting baud rate for port = %d, baud = %d", |
| 2372 | edge_port->port->number, baudRate); |
| 2373 | return 0; |
| 2374 | } |
| 2375 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2376 | dbg("%s - port = %d, baud = %d", __FUNCTION__, edge_port->port->number, baudRate); |
| 2377 | |
| 2378 | status = calc_baud_rate_divisor (baudRate, &divisor); |
| 2379 | if (status) { |
| 2380 | dev_err(&edge_port->port->dev, "%s - bad baud rate\n", __FUNCTION__); |
| 2381 | return status; |
| 2382 | } |
| 2383 | |
| 2384 | // Alloc memory for the string of commands. |
| 2385 | cmdBuffer = kmalloc (0x100, GFP_ATOMIC); |
| 2386 | if (!cmdBuffer) { |
| 2387 | dev_err(&edge_port->port->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 0x100); |
| 2388 | return -ENOMEM; |
| 2389 | } |
| 2390 | currCmd = cmdBuffer; |
| 2391 | |
| 2392 | // Enable access to divisor latch |
| 2393 | MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, LCR, LCR_DL_ENABLE ); |
| 2394 | |
| 2395 | // Write the divisor itself |
| 2396 | MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, DLL, LOW8 (divisor) ); |
| 2397 | MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, DLM, HIGH8(divisor) ); |
| 2398 | |
| 2399 | // Restore original value to disable access to divisor latch |
| 2400 | MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, LCR, edge_port->shadowLCR); |
| 2401 | |
| 2402 | status = write_cmd_usb(edge_port, cmdBuffer, cmdLen ); |
| 2403 | if (status) { |
| 2404 | /* something bad happened, let's free up the memory */ |
| 2405 | kfree (cmdBuffer); |
| 2406 | } |
| 2407 | |
| 2408 | return status; |
| 2409 | } |
| 2410 | |
| 2411 | |
| 2412 | /***************************************************************************** |
| 2413 | * calc_baud_rate_divisor |
| 2414 | * this function calculates the proper baud rate divisor for the specified |
| 2415 | * baud rate. |
| 2416 | *****************************************************************************/ |
| 2417 | static int calc_baud_rate_divisor (int baudrate, int *divisor) |
| 2418 | { |
| 2419 | int i; |
| 2420 | __u16 custom; |
| 2421 | |
| 2422 | |
| 2423 | dbg("%s - %d", __FUNCTION__, baudrate); |
| 2424 | |
Tobias Klauser | 52950ed | 2005-12-11 16:20:08 +0100 | [diff] [blame] | 2425 | for (i = 0; i < ARRAY_SIZE(divisor_table); i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2426 | if ( divisor_table[i].BaudRate == baudrate ) { |
| 2427 | *divisor = divisor_table[i].Divisor; |
| 2428 | return 0; |
| 2429 | } |
| 2430 | } |
| 2431 | |
| 2432 | // We have tried all of the standard baud rates |
| 2433 | // lets try to calculate the divisor for this baud rate |
| 2434 | // Make sure the baud rate is reasonable |
| 2435 | if (baudrate > 50 && baudrate < 230400) { |
| 2436 | // get divisor |
| 2437 | custom = (__u16)((230400L + baudrate/2) / baudrate); |
| 2438 | |
| 2439 | *divisor = custom; |
| 2440 | |
| 2441 | dbg("%s - Baud %d = %d\n", __FUNCTION__, baudrate, custom); |
| 2442 | return 0; |
| 2443 | } |
| 2444 | |
| 2445 | return -1; |
| 2446 | } |
| 2447 | |
| 2448 | |
| 2449 | /***************************************************************************** |
| 2450 | * send_cmd_write_uart_register |
| 2451 | * this function builds up a uart register message and sends to to the device. |
| 2452 | *****************************************************************************/ |
| 2453 | static int send_cmd_write_uart_register (struct edgeport_port *edge_port, __u8 regNum, __u8 regValue) |
| 2454 | { |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 2455 | struct edgeport_serial *edge_serial = usb_get_serial_data(edge_port->port->serial); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2456 | unsigned char *cmdBuffer; |
| 2457 | unsigned char *currCmd; |
| 2458 | unsigned long cmdLen = 0; |
| 2459 | int status; |
| 2460 | |
| 2461 | dbg("%s - write to %s register 0x%02x", (regNum == MCR) ? "MCR" : "LCR", __FUNCTION__, regValue); |
| 2462 | |
Adam Kropelin | bc71e47 | 2007-07-29 11:03:29 -0400 | [diff] [blame] | 2463 | if (edge_serial->is_epic && |
| 2464 | !edge_serial->epic_descriptor.Supports.IOSPWriteMCR && |
| 2465 | regNum == MCR) { |
Robert P. J. Day | beb7dd8 | 2007-05-09 07:14:03 +0200 | [diff] [blame] | 2466 | dbg("SendCmdWriteUartReg - Not writing to MCR Register"); |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 2467 | return 0; |
| 2468 | } |
| 2469 | |
Adam Kropelin | bc71e47 | 2007-07-29 11:03:29 -0400 | [diff] [blame] | 2470 | if (edge_serial->is_epic && |
| 2471 | !edge_serial->epic_descriptor.Supports.IOSPWriteLCR && |
| 2472 | regNum == LCR) { |
Robert P. J. Day | beb7dd8 | 2007-05-09 07:14:03 +0200 | [diff] [blame] | 2473 | dbg ("SendCmdWriteUartReg - Not writing to LCR Register"); |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 2474 | return 0; |
| 2475 | } |
| 2476 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2477 | // Alloc memory for the string of commands. |
| 2478 | cmdBuffer = kmalloc (0x10, GFP_ATOMIC); |
| 2479 | if (cmdBuffer == NULL ) { |
| 2480 | return -ENOMEM; |
| 2481 | } |
| 2482 | |
| 2483 | currCmd = cmdBuffer; |
| 2484 | |
| 2485 | // Build a cmd in the buffer to write the given register |
| 2486 | MAKE_CMD_WRITE_REG (&currCmd, &cmdLen, |
| 2487 | edge_port->port->number - edge_port->port->serial->minor, |
| 2488 | regNum, regValue); |
| 2489 | |
| 2490 | status = write_cmd_usb(edge_port, cmdBuffer, cmdLen); |
| 2491 | if (status) { |
| 2492 | /* something bad happened, let's free up the memory */ |
| 2493 | kfree (cmdBuffer); |
| 2494 | } |
| 2495 | |
| 2496 | return status; |
| 2497 | } |
| 2498 | |
| 2499 | |
| 2500 | /***************************************************************************** |
| 2501 | * change_port_settings |
| 2502 | * This routine is called to set the UART on the device to match the specified |
| 2503 | * new settings. |
| 2504 | *****************************************************************************/ |
| 2505 | #ifndef CMSPAR |
| 2506 | #define CMSPAR 0 |
| 2507 | #endif |
Alan Cox | 606d099 | 2006-12-08 02:38:45 -0800 | [diff] [blame] | 2508 | static void change_port_settings (struct edgeport_port *edge_port, struct ktermios *old_termios) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2509 | { |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 2510 | struct edgeport_serial *edge_serial = usb_get_serial_data(edge_port->port->serial); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2511 | struct tty_struct *tty; |
| 2512 | int baud; |
| 2513 | unsigned cflag; |
| 2514 | __u8 mask = 0xff; |
| 2515 | __u8 lData; |
| 2516 | __u8 lParity; |
| 2517 | __u8 lStop; |
| 2518 | __u8 rxFlow; |
| 2519 | __u8 txFlow; |
| 2520 | int status; |
| 2521 | |
| 2522 | dbg("%s - port %d", __FUNCTION__, edge_port->port->number); |
| 2523 | |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 2524 | if (!edge_port->open && |
| 2525 | !edge_port->openPending) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2526 | dbg("%s - port not opened", __FUNCTION__); |
| 2527 | return; |
| 2528 | } |
| 2529 | |
| 2530 | tty = edge_port->port->tty; |
| 2531 | if ((!tty) || |
| 2532 | (!tty->termios)) { |
| 2533 | dbg("%s - no tty structures", __FUNCTION__); |
| 2534 | return; |
| 2535 | } |
| 2536 | |
| 2537 | cflag = tty->termios->c_cflag; |
| 2538 | |
| 2539 | switch (cflag & CSIZE) { |
| 2540 | case CS5: lData = LCR_BITS_5; mask = 0x1f; dbg("%s - data bits = 5", __FUNCTION__); break; |
| 2541 | case CS6: lData = LCR_BITS_6; mask = 0x3f; dbg("%s - data bits = 6", __FUNCTION__); break; |
| 2542 | case CS7: lData = LCR_BITS_7; mask = 0x7f; dbg("%s - data bits = 7", __FUNCTION__); break; |
| 2543 | default: |
| 2544 | case CS8: lData = LCR_BITS_8; dbg("%s - data bits = 8", __FUNCTION__); break; |
| 2545 | } |
| 2546 | |
| 2547 | lParity = LCR_PAR_NONE; |
| 2548 | if (cflag & PARENB) { |
| 2549 | if (cflag & CMSPAR) { |
| 2550 | if (cflag & PARODD) { |
| 2551 | lParity = LCR_PAR_MARK; |
| 2552 | dbg("%s - parity = mark", __FUNCTION__); |
| 2553 | } else { |
| 2554 | lParity = LCR_PAR_SPACE; |
| 2555 | dbg("%s - parity = space", __FUNCTION__); |
| 2556 | } |
| 2557 | } else if (cflag & PARODD) { |
| 2558 | lParity = LCR_PAR_ODD; |
| 2559 | dbg("%s - parity = odd", __FUNCTION__); |
| 2560 | } else { |
| 2561 | lParity = LCR_PAR_EVEN; |
| 2562 | dbg("%s - parity = even", __FUNCTION__); |
| 2563 | } |
| 2564 | } else { |
| 2565 | dbg("%s - parity = none", __FUNCTION__); |
| 2566 | } |
| 2567 | |
| 2568 | if (cflag & CSTOPB) { |
| 2569 | lStop = LCR_STOP_2; |
| 2570 | dbg("%s - stop bits = 2", __FUNCTION__); |
| 2571 | } else { |
| 2572 | lStop = LCR_STOP_1; |
| 2573 | dbg("%s - stop bits = 1", __FUNCTION__); |
| 2574 | } |
| 2575 | |
| 2576 | /* figure out the flow control settings */ |
| 2577 | rxFlow = txFlow = 0x00; |
| 2578 | if (cflag & CRTSCTS) { |
| 2579 | rxFlow |= IOSP_RX_FLOW_RTS; |
| 2580 | txFlow |= IOSP_TX_FLOW_CTS; |
| 2581 | dbg("%s - RTS/CTS is enabled", __FUNCTION__); |
| 2582 | } else { |
| 2583 | dbg("%s - RTS/CTS is disabled", __FUNCTION__); |
| 2584 | } |
| 2585 | |
| 2586 | /* if we are implementing XON/XOFF, set the start and stop character in the device */ |
| 2587 | if (I_IXOFF(tty) || I_IXON(tty)) { |
| 2588 | unsigned char stop_char = STOP_CHAR(tty); |
| 2589 | unsigned char start_char = START_CHAR(tty); |
| 2590 | |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 2591 | if ((!edge_serial->is_epic) || |
| 2592 | ((edge_serial->is_epic) && |
| 2593 | (edge_serial->epic_descriptor.Supports.IOSPSetXChar))) { |
| 2594 | send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_XON_CHAR, start_char); |
| 2595 | send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_XOFF_CHAR, stop_char); |
| 2596 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2597 | |
| 2598 | /* if we are implementing INBOUND XON/XOFF */ |
| 2599 | if (I_IXOFF(tty)) { |
| 2600 | rxFlow |= IOSP_RX_FLOW_XON_XOFF; |
| 2601 | dbg("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", __FUNCTION__, start_char, stop_char); |
| 2602 | } else { |
| 2603 | dbg("%s - INBOUND XON/XOFF is disabled", __FUNCTION__); |
| 2604 | } |
| 2605 | |
| 2606 | /* if we are implementing OUTBOUND XON/XOFF */ |
| 2607 | if (I_IXON(tty)) { |
| 2608 | txFlow |= IOSP_TX_FLOW_XON_XOFF; |
| 2609 | dbg("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", __FUNCTION__, start_char, stop_char); |
| 2610 | } else { |
| 2611 | dbg("%s - OUTBOUND XON/XOFF is disabled", __FUNCTION__); |
| 2612 | } |
| 2613 | } |
| 2614 | |
| 2615 | /* Set flow control to the configured value */ |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 2616 | if ((!edge_serial->is_epic) || |
| 2617 | ((edge_serial->is_epic) && |
| 2618 | (edge_serial->epic_descriptor.Supports.IOSPSetRxFlow))) |
| 2619 | send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow); |
| 2620 | if ((!edge_serial->is_epic) || |
| 2621 | ((edge_serial->is_epic) && |
| 2622 | (edge_serial->epic_descriptor.Supports.IOSPSetTxFlow))) |
| 2623 | send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_TX_FLOW, txFlow); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2624 | |
| 2625 | |
| 2626 | edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); |
| 2627 | edge_port->shadowLCR |= (lData | lParity | lStop); |
| 2628 | |
| 2629 | edge_port->validDataMask = mask; |
| 2630 | |
| 2631 | /* Send the updated LCR value to the EdgePort */ |
| 2632 | status = send_cmd_write_uart_register(edge_port, LCR, edge_port->shadowLCR); |
| 2633 | if (status != 0) { |
| 2634 | return; |
| 2635 | } |
| 2636 | |
| 2637 | /* set up the MCR register and send it to the EdgePort */ |
| 2638 | edge_port->shadowMCR = MCR_MASTER_IE; |
| 2639 | if (cflag & CBAUD) { |
| 2640 | edge_port->shadowMCR |= (MCR_DTR | MCR_RTS); |
| 2641 | } |
| 2642 | status = send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR); |
| 2643 | if (status != 0) { |
| 2644 | return; |
| 2645 | } |
| 2646 | |
| 2647 | /* Determine divisor based on baud rate */ |
| 2648 | baud = tty_get_baud_rate(tty); |
| 2649 | if (!baud) { |
| 2650 | /* pick a default, any default... */ |
| 2651 | baud = 9600; |
| 2652 | } |
| 2653 | |
| 2654 | dbg("%s - baud rate = %d", __FUNCTION__, baud); |
| 2655 | status = send_cmd_write_baud_rate (edge_port, baud); |
| 2656 | |
| 2657 | return; |
| 2658 | } |
| 2659 | |
| 2660 | |
| 2661 | /**************************************************************************** |
| 2662 | * unicode_to_ascii |
| 2663 | * Turns a string from Unicode into ASCII. |
| 2664 | * Doesn't do a good job with any characters that are outside the normal |
| 2665 | * ASCII range, but it's only for debugging... |
| 2666 | * NOTE: expects the unicode in LE format |
| 2667 | ****************************************************************************/ |
Pete Zaitcev | ad93375 | 2006-05-22 21:49:44 -0700 | [diff] [blame] | 2668 | static void unicode_to_ascii(char *string, int buflen, __le16 *unicode, int unicode_size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2669 | { |
| 2670 | int i; |
| 2671 | |
Pete Zaitcev | ad93375 | 2006-05-22 21:49:44 -0700 | [diff] [blame] | 2672 | if (buflen <= 0) /* never happens, but... */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2673 | return; |
Pete Zaitcev | ad93375 | 2006-05-22 21:49:44 -0700 | [diff] [blame] | 2674 | --buflen; /* space for nul */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2675 | |
Pete Zaitcev | ad93375 | 2006-05-22 21:49:44 -0700 | [diff] [blame] | 2676 | for (i = 0; i < unicode_size; i++) { |
| 2677 | if (i >= buflen) |
| 2678 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2679 | string[i] = (char)(le16_to_cpu(unicode[i])); |
Pete Zaitcev | ad93375 | 2006-05-22 21:49:44 -0700 | [diff] [blame] | 2680 | } |
| 2681 | string[i] = 0x00; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2682 | } |
| 2683 | |
| 2684 | |
| 2685 | /**************************************************************************** |
| 2686 | * get_manufacturing_desc |
| 2687 | * reads in the manufacturing descriptor and stores it into the serial |
| 2688 | * structure. |
| 2689 | ****************************************************************************/ |
| 2690 | static void get_manufacturing_desc (struct edgeport_serial *edge_serial) |
| 2691 | { |
| 2692 | int response; |
| 2693 | |
| 2694 | dbg("getting manufacturer descriptor"); |
| 2695 | |
| 2696 | response = rom_read (edge_serial->serial, (EDGE_MANUF_DESC_ADDR & 0xffff0000) >> 16, |
| 2697 | (__u16)(EDGE_MANUF_DESC_ADDR & 0x0000ffff), EDGE_MANUF_DESC_LEN, |
| 2698 | (__u8 *)(&edge_serial->manuf_descriptor)); |
| 2699 | |
| 2700 | if (response < 1) { |
| 2701 | dev_err(&edge_serial->serial->dev->dev, "error in getting manufacturer descriptor\n"); |
| 2702 | } else { |
| 2703 | char string[30]; |
| 2704 | dbg("**Manufacturer Descriptor"); |
| 2705 | dbg(" RomSize: %dK", edge_serial->manuf_descriptor.RomSize); |
| 2706 | dbg(" RamSize: %dK", edge_serial->manuf_descriptor.RamSize); |
| 2707 | dbg(" CpuRev: %d", edge_serial->manuf_descriptor.CpuRev); |
| 2708 | dbg(" BoardRev: %d", edge_serial->manuf_descriptor.BoardRev); |
| 2709 | dbg(" NumPorts: %d", edge_serial->manuf_descriptor.NumPorts); |
| 2710 | dbg(" DescDate: %d/%d/%d", edge_serial->manuf_descriptor.DescDate[0], edge_serial->manuf_descriptor.DescDate[1], edge_serial->manuf_descriptor.DescDate[2]+1900); |
Pete Zaitcev | 4bc203d | 2006-06-06 18:18:33 -0700 | [diff] [blame] | 2711 | unicode_to_ascii(string, sizeof(string), |
Pete Zaitcev | ad93375 | 2006-05-22 21:49:44 -0700 | [diff] [blame] | 2712 | edge_serial->manuf_descriptor.SerialNumber, |
| 2713 | edge_serial->manuf_descriptor.SerNumLength/2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2714 | dbg(" SerialNumber: %s", string); |
Pete Zaitcev | 4bc203d | 2006-06-06 18:18:33 -0700 | [diff] [blame] | 2715 | unicode_to_ascii(string, sizeof(string), |
Pete Zaitcev | ad93375 | 2006-05-22 21:49:44 -0700 | [diff] [blame] | 2716 | edge_serial->manuf_descriptor.AssemblyNumber, |
| 2717 | edge_serial->manuf_descriptor.AssemblyNumLength/2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2718 | dbg(" AssemblyNumber: %s", string); |
Pete Zaitcev | 4bc203d | 2006-06-06 18:18:33 -0700 | [diff] [blame] | 2719 | unicode_to_ascii(string, sizeof(string), |
Pete Zaitcev | ad93375 | 2006-05-22 21:49:44 -0700 | [diff] [blame] | 2720 | edge_serial->manuf_descriptor.OemAssyNumber, |
| 2721 | edge_serial->manuf_descriptor.OemAssyNumLength/2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2722 | dbg(" OemAssyNumber: %s", string); |
| 2723 | dbg(" UartType: %d", edge_serial->manuf_descriptor.UartType); |
| 2724 | dbg(" IonPid: %d", edge_serial->manuf_descriptor.IonPid); |
| 2725 | dbg(" IonConfig: %d", edge_serial->manuf_descriptor.IonConfig); |
| 2726 | } |
| 2727 | } |
| 2728 | |
| 2729 | |
| 2730 | /**************************************************************************** |
| 2731 | * get_boot_desc |
| 2732 | * reads in the bootloader descriptor and stores it into the serial |
| 2733 | * structure. |
| 2734 | ****************************************************************************/ |
| 2735 | static void get_boot_desc (struct edgeport_serial *edge_serial) |
| 2736 | { |
| 2737 | int response; |
| 2738 | |
| 2739 | dbg("getting boot descriptor"); |
| 2740 | |
| 2741 | response = rom_read (edge_serial->serial, (EDGE_BOOT_DESC_ADDR & 0xffff0000) >> 16, |
| 2742 | (__u16)(EDGE_BOOT_DESC_ADDR & 0x0000ffff), EDGE_BOOT_DESC_LEN, |
| 2743 | (__u8 *)(&edge_serial->boot_descriptor)); |
| 2744 | |
| 2745 | if (response < 1) { |
| 2746 | dev_err(&edge_serial->serial->dev->dev, "error in getting boot descriptor\n"); |
| 2747 | } else { |
| 2748 | dbg("**Boot Descriptor:"); |
| 2749 | dbg(" BootCodeLength: %d", le16_to_cpu(edge_serial->boot_descriptor.BootCodeLength)); |
| 2750 | dbg(" MajorVersion: %d", edge_serial->boot_descriptor.MajorVersion); |
| 2751 | dbg(" MinorVersion: %d", edge_serial->boot_descriptor.MinorVersion); |
| 2752 | dbg(" BuildNumber: %d", le16_to_cpu(edge_serial->boot_descriptor.BuildNumber)); |
| 2753 | dbg(" Capabilities: 0x%x", le16_to_cpu(edge_serial->boot_descriptor.Capabilities)); |
| 2754 | dbg(" UConfig0: %d", edge_serial->boot_descriptor.UConfig0); |
| 2755 | dbg(" UConfig1: %d", edge_serial->boot_descriptor.UConfig1); |
| 2756 | } |
| 2757 | } |
| 2758 | |
| 2759 | |
| 2760 | /**************************************************************************** |
| 2761 | * load_application_firmware |
| 2762 | * This is called to load the application firmware to the device |
| 2763 | ****************************************************************************/ |
| 2764 | static void load_application_firmware (struct edgeport_serial *edge_serial) |
| 2765 | { |
| 2766 | struct edge_firmware_image_record *record; |
| 2767 | unsigned char *firmware; |
| 2768 | unsigned char *FirmwareImage; |
| 2769 | int ImageSize; |
| 2770 | int response; |
| 2771 | |
| 2772 | |
| 2773 | switch (edge_serial->product_info.iDownloadFile) { |
| 2774 | case EDGE_DOWNLOAD_FILE_I930: |
| 2775 | dbg("downloading firmware version (930) %d.%d.%d", |
| 2776 | OperationalCodeImageVersion_GEN1.MajorVersion, |
| 2777 | OperationalCodeImageVersion_GEN1.MinorVersion, |
| 2778 | OperationalCodeImageVersion_GEN1.BuildNumber); |
| 2779 | firmware = &OperationalCodeImage_GEN1[0]; |
| 2780 | FirmwareImage = &OperationalCodeImage_GEN1[0]; |
| 2781 | ImageSize = sizeof(OperationalCodeImage_GEN1); |
| 2782 | break; |
| 2783 | |
| 2784 | case EDGE_DOWNLOAD_FILE_80251: |
| 2785 | dbg("downloading firmware version (80251) %d.%d.%d", |
| 2786 | OperationalCodeImageVersion_GEN2.MajorVersion, |
| 2787 | OperationalCodeImageVersion_GEN2.MinorVersion, |
| 2788 | OperationalCodeImageVersion_GEN2.BuildNumber); |
| 2789 | firmware = &OperationalCodeImage_GEN2[0]; |
| 2790 | FirmwareImage = &OperationalCodeImage_GEN2[0]; |
| 2791 | ImageSize = sizeof(OperationalCodeImage_GEN2); |
| 2792 | break; |
| 2793 | |
| 2794 | case EDGE_DOWNLOAD_FILE_NONE: |
| 2795 | dbg ("No download file specified, skipping download\n"); |
| 2796 | return; |
| 2797 | |
| 2798 | default: |
| 2799 | return; |
| 2800 | } |
| 2801 | |
| 2802 | |
| 2803 | for (;;) { |
| 2804 | record = (struct edge_firmware_image_record *)firmware; |
| 2805 | response = sram_write (edge_serial->serial, le16_to_cpu(record->ExtAddr), le16_to_cpu(record->Addr), le16_to_cpu(record->Len), &record->Data[0]); |
| 2806 | if (response < 0) { |
| 2807 | dev_err(&edge_serial->serial->dev->dev, "sram_write failed (%x, %x, %d)\n", le16_to_cpu(record->ExtAddr), le16_to_cpu(record->Addr), le16_to_cpu(record->Len)); |
| 2808 | break; |
| 2809 | } |
| 2810 | firmware += sizeof (struct edge_firmware_image_record) + le16_to_cpu(record->Len); |
| 2811 | if (firmware >= &FirmwareImage[ImageSize]) { |
| 2812 | break; |
| 2813 | } |
| 2814 | } |
| 2815 | |
| 2816 | dbg("sending exec_dl_code"); |
| 2817 | response = usb_control_msg (edge_serial->serial->dev, |
| 2818 | usb_sndctrlpipe(edge_serial->serial->dev, 0), |
| 2819 | USB_REQUEST_ION_EXEC_DL_CODE, |
| 2820 | 0x40, 0x4000, 0x0001, NULL, 0, 3000); |
| 2821 | |
| 2822 | return; |
| 2823 | } |
| 2824 | |
| 2825 | |
| 2826 | /**************************************************************************** |
| 2827 | * edge_startup |
| 2828 | ****************************************************************************/ |
| 2829 | static int edge_startup (struct usb_serial *serial) |
| 2830 | { |
| 2831 | struct edgeport_serial *edge_serial; |
| 2832 | struct edgeport_port *edge_port; |
| 2833 | struct usb_device *dev; |
Chris Lund | bfd5df3 | 2006-06-03 13:58:19 -0700 | [diff] [blame] | 2834 | int i, j; |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 2835 | int response; |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 2836 | bool interrupt_in_found; |
| 2837 | bool bulk_in_found; |
| 2838 | bool bulk_out_found; |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 2839 | static __u32 descriptor[3] = { EDGE_COMPATIBILITY_MASK0, |
| 2840 | EDGE_COMPATIBILITY_MASK1, |
| 2841 | EDGE_COMPATIBILITY_MASK2 }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2842 | |
| 2843 | dev = serial->dev; |
| 2844 | |
| 2845 | /* create our private serial structure */ |
Eric Sesterhenn | 80b6ca4 | 2006-02-27 21:29:43 +0100 | [diff] [blame] | 2846 | edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2847 | if (edge_serial == NULL) { |
| 2848 | dev_err(&serial->dev->dev, "%s - Out of memory\n", __FUNCTION__); |
| 2849 | return -ENOMEM; |
| 2850 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2851 | spin_lock_init(&edge_serial->es_lock); |
| 2852 | edge_serial->serial = serial; |
| 2853 | usb_set_serial_data(serial, edge_serial); |
| 2854 | |
| 2855 | /* get the name for the device from the device */ |
Pete Zaitcev | ad93375 | 2006-05-22 21:49:44 -0700 | [diff] [blame] | 2856 | i = get_string(dev, dev->descriptor.iManufacturer, |
| 2857 | &edge_serial->name[0], MAX_NAME_LEN+1); |
| 2858 | edge_serial->name[i++] = ' '; |
| 2859 | get_string(dev, dev->descriptor.iProduct, |
| 2860 | &edge_serial->name[i], MAX_NAME_LEN+2 - i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2861 | |
| 2862 | dev_info(&serial->dev->dev, "%s detected\n", edge_serial->name); |
| 2863 | |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 2864 | /* Read the epic descriptor */ |
| 2865 | if (get_epic_descriptor(edge_serial) <= 0) { |
| 2866 | /* memcpy descriptor to Supports structures */ |
| 2867 | memcpy(&edge_serial->epic_descriptor.Supports, descriptor, |
| 2868 | sizeof(struct edge_compatibility_bits)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2869 | |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 2870 | /* get the manufacturing descriptor for this device */ |
| 2871 | get_manufacturing_desc (edge_serial); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2872 | |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 2873 | /* get the boot descriptor */ |
| 2874 | get_boot_desc (edge_serial); |
| 2875 | |
| 2876 | get_product_info(edge_serial); |
| 2877 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2878 | |
| 2879 | /* set the number of ports from the manufacturing description */ |
| 2880 | /* serial->num_ports = serial->product_info.NumPorts; */ |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 2881 | if ((!edge_serial->is_epic) && |
| 2882 | (edge_serial->product_info.NumPorts != serial->num_ports)) { |
| 2883 | dev_warn(&serial->dev->dev, "Device Reported %d serial ports " |
| 2884 | "vs. core thinking we have %d ports, email " |
| 2885 | "greg@kroah.com this information.", |
| 2886 | edge_serial->product_info.NumPorts, |
| 2887 | serial->num_ports); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2888 | } |
| 2889 | |
| 2890 | dbg("%s - time 1 %ld", __FUNCTION__, jiffies); |
| 2891 | |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 2892 | /* If not an EPiC device */ |
| 2893 | if (!edge_serial->is_epic) { |
| 2894 | /* now load the application firmware into this device */ |
| 2895 | load_application_firmware (edge_serial); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2896 | |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 2897 | dbg("%s - time 2 %ld", __FUNCTION__, jiffies); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2898 | |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 2899 | /* Check current Edgeport EEPROM and update if necessary */ |
| 2900 | update_edgeport_E2PROM (edge_serial); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2901 | |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 2902 | dbg("%s - time 3 %ld", __FUNCTION__, jiffies); |
| 2903 | |
| 2904 | /* set the configuration to use #1 */ |
| 2905 | // dbg("set_configuration 1"); |
| 2906 | // usb_set_configuration (dev, 1); |
| 2907 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2908 | |
| 2909 | /* we set up the pointers to the endpoints in the edge_open function, |
| 2910 | * as the structures aren't created yet. */ |
| 2911 | |
| 2912 | /* set up our port private structures */ |
| 2913 | for (i = 0; i < serial->num_ports; ++i) { |
| 2914 | edge_port = kmalloc (sizeof(struct edgeport_port), GFP_KERNEL); |
| 2915 | if (edge_port == NULL) { |
| 2916 | dev_err(&serial->dev->dev, "%s - Out of memory\n", __FUNCTION__); |
Chris Lund | bfd5df3 | 2006-06-03 13:58:19 -0700 | [diff] [blame] | 2917 | for (j = 0; j < i; ++j) { |
| 2918 | kfree (usb_get_serial_port_data(serial->port[j])); |
| 2919 | usb_set_serial_port_data(serial->port[j], NULL); |
| 2920 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2921 | usb_set_serial_data(serial, NULL); |
| 2922 | kfree(edge_serial); |
| 2923 | return -ENOMEM; |
| 2924 | } |
| 2925 | memset (edge_port, 0, sizeof(struct edgeport_port)); |
| 2926 | spin_lock_init(&edge_port->ep_lock); |
| 2927 | edge_port->port = serial->port[i]; |
| 2928 | usb_set_serial_port_data(serial->port[i], edge_port); |
| 2929 | } |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 2930 | |
| 2931 | response = 0; |
| 2932 | |
| 2933 | if (edge_serial->is_epic) { |
| 2934 | /* EPIC thing, set up our interrupt polling now and our read urb, so |
| 2935 | * that the device knows it really is connected. */ |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 2936 | interrupt_in_found = bulk_in_found = bulk_out_found = false; |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 2937 | for (i = 0; i < serial->interface->altsetting[0].desc.bNumEndpoints; ++i) { |
| 2938 | struct usb_endpoint_descriptor *endpoint; |
| 2939 | int buffer_size; |
| 2940 | |
| 2941 | endpoint = &serial->interface->altsetting[0].endpoint[i].desc; |
| 2942 | buffer_size = le16_to_cpu(endpoint->wMaxPacketSize); |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 2943 | if (!interrupt_in_found && |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 2944 | (usb_endpoint_is_int_in(endpoint))) { |
| 2945 | /* we found a interrupt in endpoint */ |
| 2946 | dbg("found interrupt in"); |
| 2947 | |
| 2948 | /* not set up yet, so do it now */ |
| 2949 | edge_serial->interrupt_read_urb = usb_alloc_urb(0, GFP_KERNEL); |
| 2950 | if (!edge_serial->interrupt_read_urb) { |
| 2951 | err("out of memory"); |
| 2952 | return -ENOMEM; |
| 2953 | } |
| 2954 | edge_serial->interrupt_in_buffer = kmalloc(buffer_size, GFP_KERNEL); |
| 2955 | if (!edge_serial->interrupt_in_buffer) { |
| 2956 | err("out of memory"); |
| 2957 | usb_free_urb(edge_serial->interrupt_read_urb); |
| 2958 | return -ENOMEM; |
| 2959 | } |
| 2960 | edge_serial->interrupt_in_endpoint = endpoint->bEndpointAddress; |
| 2961 | |
| 2962 | /* set up our interrupt urb */ |
| 2963 | usb_fill_int_urb(edge_serial->interrupt_read_urb, |
| 2964 | dev, |
| 2965 | usb_rcvintpipe(dev, endpoint->bEndpointAddress), |
| 2966 | edge_serial->interrupt_in_buffer, |
| 2967 | buffer_size, |
| 2968 | edge_interrupt_callback, |
| 2969 | edge_serial, |
| 2970 | endpoint->bInterval); |
| 2971 | |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 2972 | interrupt_in_found = true; |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 2973 | } |
| 2974 | |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 2975 | if (!bulk_in_found && |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 2976 | (usb_endpoint_is_bulk_in(endpoint))) { |
| 2977 | /* we found a bulk in endpoint */ |
| 2978 | dbg("found bulk in"); |
| 2979 | |
| 2980 | /* not set up yet, so do it now */ |
| 2981 | edge_serial->read_urb = usb_alloc_urb(0, GFP_KERNEL); |
| 2982 | if (!edge_serial->read_urb) { |
| 2983 | err("out of memory"); |
| 2984 | return -ENOMEM; |
| 2985 | } |
| 2986 | edge_serial->bulk_in_buffer = kmalloc(buffer_size, GFP_KERNEL); |
| 2987 | if (!edge_serial->bulk_in_buffer) { |
| 2988 | err ("out of memory"); |
| 2989 | usb_free_urb(edge_serial->read_urb); |
| 2990 | return -ENOMEM; |
| 2991 | } |
| 2992 | edge_serial->bulk_in_endpoint = endpoint->bEndpointAddress; |
| 2993 | |
| 2994 | /* set up our bulk in urb */ |
| 2995 | usb_fill_bulk_urb(edge_serial->read_urb, dev, |
| 2996 | usb_rcvbulkpipe(dev, endpoint->bEndpointAddress), |
| 2997 | edge_serial->bulk_in_buffer, |
| 2998 | endpoint->wMaxPacketSize, |
| 2999 | edge_bulk_in_callback, |
| 3000 | edge_serial); |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 3001 | bulk_in_found = true; |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 3002 | } |
| 3003 | |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 3004 | if (!bulk_out_found && |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 3005 | (usb_endpoint_is_bulk_out(endpoint))) { |
| 3006 | /* we found a bulk out endpoint */ |
| 3007 | dbg("found bulk out"); |
| 3008 | edge_serial->bulk_out_endpoint = endpoint->bEndpointAddress; |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 3009 | bulk_out_found = true; |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 3010 | } |
| 3011 | } |
| 3012 | |
Richard Knutsson | cb8eaa8 | 2007-03-17 01:35:53 +0100 | [diff] [blame] | 3013 | if (!interrupt_in_found || !bulk_in_found || !bulk_out_found) { |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 3014 | err ("Error - the proper endpoints were not found!"); |
| 3015 | return -ENODEV; |
| 3016 | } |
| 3017 | |
| 3018 | /* start interrupt read for this edgeport this interrupt will |
| 3019 | * continue as long as the edgeport is connected */ |
| 3020 | response = usb_submit_urb(edge_serial->interrupt_read_urb, GFP_KERNEL); |
| 3021 | if (response) |
| 3022 | err("%s - Error %d submitting control urb", __FUNCTION__, response); |
| 3023 | } |
| 3024 | return response; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3025 | } |
| 3026 | |
| 3027 | |
| 3028 | /**************************************************************************** |
| 3029 | * edge_shutdown |
| 3030 | * This function is called whenever the device is removed from the usb bus. |
| 3031 | ****************************************************************************/ |
| 3032 | static void edge_shutdown (struct usb_serial *serial) |
| 3033 | { |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 3034 | struct edgeport_serial *edge_serial = usb_get_serial_data(serial); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3035 | int i; |
| 3036 | |
| 3037 | dbg("%s", __FUNCTION__); |
| 3038 | |
| 3039 | /* stop reads and writes on all ports */ |
| 3040 | for (i=0; i < serial->num_ports; ++i) { |
| 3041 | kfree (usb_get_serial_port_data(serial->port[i])); |
| 3042 | usb_set_serial_port_data(serial->port[i], NULL); |
| 3043 | } |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 3044 | /* free up our endpoint stuff */ |
| 3045 | if (edge_serial->is_epic) { |
Oliver Neukum | 74ac07e | 2007-06-13 18:50:41 +0200 | [diff] [blame] | 3046 | usb_kill_urb(edge_serial->interrupt_read_urb); |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 3047 | usb_free_urb(edge_serial->interrupt_read_urb); |
| 3048 | kfree(edge_serial->interrupt_in_buffer); |
| 3049 | |
Oliver Neukum | 74ac07e | 2007-06-13 18:50:41 +0200 | [diff] [blame] | 3050 | usb_kill_urb(edge_serial->read_urb); |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 3051 | usb_free_urb(edge_serial->read_urb); |
| 3052 | kfree(edge_serial->bulk_in_buffer); |
| 3053 | } |
| 3054 | |
| 3055 | kfree(edge_serial); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3056 | usb_set_serial_data(serial, NULL); |
| 3057 | } |
| 3058 | |
| 3059 | |
| 3060 | /**************************************************************************** |
| 3061 | * edgeport_init |
| 3062 | * This is called by the module subsystem, or on startup to initialize us |
| 3063 | ****************************************************************************/ |
| 3064 | static int __init edgeport_init(void) |
| 3065 | { |
| 3066 | int retval; |
| 3067 | |
| 3068 | retval = usb_serial_register(&edgeport_2port_device); |
| 3069 | if (retval) |
| 3070 | goto failed_2port_device_register; |
| 3071 | retval = usb_serial_register(&edgeport_4port_device); |
| 3072 | if (retval) |
| 3073 | goto failed_4port_device_register; |
| 3074 | retval = usb_serial_register(&edgeport_8port_device); |
| 3075 | if (retval) |
| 3076 | goto failed_8port_device_register; |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 3077 | retval = usb_serial_register(&epic_device); |
| 3078 | if (retval) |
| 3079 | goto failed_epic_device_register; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3080 | retval = usb_register(&io_driver); |
| 3081 | if (retval) |
| 3082 | goto failed_usb_register; |
Oliver Neukum | 96c706e | 2007-03-15 15:27:17 +0100 | [diff] [blame] | 3083 | atomic_set(&CmdUrbs, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3084 | info(DRIVER_DESC " " DRIVER_VERSION); |
| 3085 | return 0; |
| 3086 | |
| 3087 | failed_usb_register: |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 3088 | usb_serial_deregister(&epic_device); |
| 3089 | failed_epic_device_register: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3090 | usb_serial_deregister(&edgeport_8port_device); |
| 3091 | failed_8port_device_register: |
| 3092 | usb_serial_deregister(&edgeport_4port_device); |
| 3093 | failed_4port_device_register: |
| 3094 | usb_serial_deregister(&edgeport_2port_device); |
| 3095 | failed_2port_device_register: |
| 3096 | return retval; |
| 3097 | } |
| 3098 | |
| 3099 | |
| 3100 | /**************************************************************************** |
| 3101 | * edgeport_exit |
| 3102 | * Called when the driver is about to be unloaded. |
| 3103 | ****************************************************************************/ |
| 3104 | static void __exit edgeport_exit (void) |
| 3105 | { |
| 3106 | usb_deregister (&io_driver); |
| 3107 | usb_serial_deregister (&edgeport_2port_device); |
| 3108 | usb_serial_deregister (&edgeport_4port_device); |
| 3109 | usb_serial_deregister (&edgeport_8port_device); |
Greg Kroah-Hartman | 6e8cf77 | 2007-01-18 00:20:19 -0800 | [diff] [blame] | 3110 | usb_serial_deregister (&epic_device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3111 | } |
| 3112 | |
| 3113 | module_init(edgeport_init); |
| 3114 | module_exit(edgeport_exit); |
| 3115 | |
| 3116 | /* Module information */ |
| 3117 | MODULE_AUTHOR( DRIVER_AUTHOR ); |
| 3118 | MODULE_DESCRIPTION( DRIVER_DESC ); |
| 3119 | MODULE_LICENSE("GPL"); |
| 3120 | |
| 3121 | module_param(debug, bool, S_IRUGO | S_IWUSR); |
| 3122 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |
| 3123 | |
| 3124 | module_param(low_latency, bool, S_IRUGO | S_IWUSR); |
| 3125 | MODULE_PARM_DESC(low_latency, "Low latency enabled or not"); |