2 * Edgeport USB Serial Converter driver
4 * Copyright (C) 2000-2002 Inside Out Networks, All rights reserved.
5 * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
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.
12 * Supports the following devices:
13 * EP/1 EP/2 EP/4 EP/21 EP/22 EP/221 EP/42 EP/421 WATCHPORT
15 * For questions or problems with this driver, contact Inside Out
16 * Networks technical support, or Peter Berger <pberger@brimson.com>,
17 * or Al Borchers <alborchers@steinerpoint.com>.
20 #include <linux/kernel.h>
21 #include <linux/jiffies.h>
22 #include <linux/errno.h>
23 #include <linux/init.h>
24 #include <linux/slab.h>
25 #include <linux/tty.h>
26 #include <linux/tty_driver.h>
27 #include <linux/tty_flip.h>
28 #include <linux/module.h>
29 #include <linux/spinlock.h>
30 #include <linux/mutex.h>
31 #include <linux/serial.h>
32 #include <linux/kfifo.h>
33 #include <linux/ioctl.h>
34 #include <linux/firmware.h>
35 #include <linux/uaccess.h>
36 #include <linux/usb.h>
37 #include <linux/usb/serial.h>
40 #include "io_usbvend.h"
43 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
44 #define DRIVER_DESC "Edgeport USB Serial Driver"
46 #define EPROM_PAGE_SIZE 64
49 /* different hardware types */
50 #define HARDWARE_TYPE_930 0
51 #define HARDWARE_TYPE_TIUMP 1
53 /* IOCTL_PRIVATE_TI_GET_MODE Definitions */
54 #define TI_MODE_CONFIGURING 0 /* Device has not entered start device */
55 #define TI_MODE_BOOT 1 /* Staying in boot mode */
56 #define TI_MODE_DOWNLOAD 2 /* Made it to download mode */
57 #define TI_MODE_TRANSITIONING 3 /* Currently in boot mode but
58 transitioning to download mode */
61 #define EDGE_READ_URB_RUNNING 0
62 #define EDGE_READ_URB_STOPPING 1
63 #define EDGE_READ_URB_STOPPED 2
65 #define EDGE_CLOSING_WAIT 4000 /* in .01 sec */
68 /* Product information read from the Edgeport */
70 int TiMode; /* Current TI Mode */
71 __u8 hardware_type; /* Type of hardware */
72 } __attribute__((packed));
74 struct edgeport_port {
81 __u32 ump_read_timeout; /* Number of milliseconds the UMP will
82 wait without data before completing
88 struct edgeport_serial *edge_serial;
89 struct usb_serial_port *port;
90 __u8 bUartMode; /* Port type, 0: RS232, etc. */
92 int ep_read_urb_state;
93 int ep_write_urb_in_use;
96 struct edgeport_serial {
97 struct product_info product_info;
98 u8 TI_I2C_Type; /* Type of I2C in UMP */
99 u8 TiReadI2C; /* Set to TRUE if we have read the
101 struct mutex es_lock;
103 struct usb_serial *serial;
107 /* Devices that this driver supports */
108 static const struct usb_device_id edgeport_1port_id_table[] = {
109 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
110 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
111 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
112 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
113 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
114 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
115 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
116 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
117 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
118 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
119 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
120 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
121 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
122 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
123 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
124 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
128 static const struct usb_device_id edgeport_2port_id_table[] = {
129 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
130 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
131 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
132 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
133 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
134 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
135 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
136 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
137 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
138 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
139 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
140 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
141 /* The 4, 8 and 16 port devices show up as multiple 2 port devices */
142 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
143 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
144 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
145 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
146 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
150 /* Devices that this driver supports */
151 static const struct usb_device_id id_table_combined[] = {
152 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
153 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
154 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
155 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
156 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
157 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
158 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
159 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
160 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
161 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
162 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
163 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
164 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
165 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
166 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
167 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
168 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
169 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
170 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
171 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
172 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
173 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
174 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
175 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
176 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
177 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
178 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
179 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
180 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
181 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
182 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
183 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
184 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
188 MODULE_DEVICE_TABLE(usb, id_table_combined);
190 static unsigned char OperationalMajorVersion;
191 static unsigned char OperationalMinorVersion;
192 static unsigned short OperationalBuildNumber;
194 static int closing_wait = EDGE_CLOSING_WAIT;
195 static bool ignore_cpu_rev;
196 static int default_uart_mode; /* RS232 */
198 static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
201 static void stop_read(struct edgeport_port *edge_port);
202 static int restart_read(struct edgeport_port *edge_port);
204 static void edge_set_termios(struct tty_struct *tty,
205 struct usb_serial_port *port, struct ktermios *old_termios);
206 static void edge_send(struct usb_serial_port *port, struct tty_struct *tty);
208 /* sysfs attributes */
209 static int edge_create_sysfs_attrs(struct usb_serial_port *port);
210 static int edge_remove_sysfs_attrs(struct usb_serial_port *port);
213 static int ti_vread_sync(struct usb_device *dev, __u8 request,
214 __u16 value, __u16 index, u8 *data, int size)
218 status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request,
219 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN),
220 value, index, data, size, 1000);
223 if (status != size) {
224 dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n",
225 __func__, size, status);
231 static int ti_vsend_sync(struct usb_device *dev, __u8 request,
232 __u16 value, __u16 index, u8 *data, int size)
236 status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request,
237 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT),
238 value, index, data, size, 1000);
241 if (status != size) {
242 dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n",
243 __func__, size, status);
249 static int send_cmd(struct usb_device *dev, __u8 command,
250 __u8 moduleid, __u16 value, u8 *data,
253 return ti_vsend_sync(dev, command, value, moduleid, data, size);
256 /* clear tx/rx buffers and fifo in TI UMP */
257 static int purge_port(struct usb_serial_port *port, __u16 mask)
259 int port_number = port->port_number;
261 dev_dbg(&port->dev, "%s - port %d, mask %x\n", __func__, port_number, mask);
263 return send_cmd(port->serial->dev,
265 (__u8)(UMPM_UART1_PORT + port_number),
272 * read_download_mem - Read edgeport memory from TI chip
273 * @dev: usb device pointer
274 * @start_address: Device CPU address at which to read
275 * @length: Length of above data
276 * @address_type: Can read both XDATA and I2C
277 * @buffer: pointer to input data buffer
279 static int read_download_mem(struct usb_device *dev, int start_address,
280 int length, __u8 address_type, __u8 *buffer)
284 __be16 be_start_address;
286 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, length);
288 /* Read in blocks of 64 bytes
289 * (TI firmware can't handle more than 64 byte reads)
295 read_length = (__u8)length;
297 if (read_length > 1) {
298 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, read_length);
300 be_start_address = cpu_to_be16(start_address);
301 status = ti_vread_sync(dev, UMPC_MEMORY_READ,
303 (__force __u16)be_start_address,
304 buffer, read_length);
307 dev_dbg(&dev->dev, "%s - ERROR %x\n", __func__, status);
312 usb_serial_debug_data(&dev->dev, __func__, read_length, buffer);
314 /* Update pointers/length */
315 start_address += read_length;
316 buffer += read_length;
317 length -= read_length;
323 static int read_ram(struct usb_device *dev, int start_address,
324 int length, __u8 *buffer)
326 return read_download_mem(dev, start_address, length,
327 DTK_ADDR_SPACE_XDATA, buffer);
330 /* Read edgeport memory to a given block */
331 static int read_boot_mem(struct edgeport_serial *serial,
332 int start_address, int length, __u8 *buffer)
337 for (i = 0; i < length; i++) {
338 status = ti_vread_sync(serial->serial->dev,
339 UMPC_MEMORY_READ, serial->TI_I2C_Type,
340 (__u16)(start_address+i), &buffer[i], 0x01);
342 dev_dbg(&serial->serial->dev->dev, "%s - ERROR %x\n", __func__, status);
347 dev_dbg(&serial->serial->dev->dev, "%s - start_address = %x, length = %d\n",
348 __func__, start_address, length);
349 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer);
351 serial->TiReadI2C = 1;
356 /* Write given block to TI EPROM memory */
357 static int write_boot_mem(struct edgeport_serial *serial,
358 int start_address, int length, __u8 *buffer)
364 /* Must do a read before write */
365 if (!serial->TiReadI2C) {
366 temp = kmalloc(1, GFP_KERNEL);
368 dev_err(&serial->serial->dev->dev,
369 "%s - out of memory\n", __func__);
372 status = read_boot_mem(serial, 0, 1, temp);
378 for (i = 0; i < length; ++i) {
379 status = ti_vsend_sync(serial->serial->dev,
380 UMPC_MEMORY_WRITE, buffer[i],
381 (__u16)(i + start_address), NULL, 0);
386 dev_dbg(&serial->serial->dev->dev, "%s - start_sddr = %x, length = %d\n", __func__, start_address, length);
387 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer);
393 /* Write edgeport I2C memory to TI chip */
394 static int write_i2c_mem(struct edgeport_serial *serial,
395 int start_address, int length, __u8 address_type, __u8 *buffer)
397 struct device *dev = &serial->serial->dev->dev;
400 __be16 be_start_address;
402 /* We can only send a maximum of 1 aligned byte page at a time */
404 /* calculate the number of bytes left in the first page */
405 write_length = EPROM_PAGE_SIZE -
406 (start_address & (EPROM_PAGE_SIZE - 1));
408 if (write_length > length)
409 write_length = length;
411 dev_dbg(dev, "%s - BytesInFirstPage Addr = %x, length = %d\n",
412 __func__, start_address, write_length);
413 usb_serial_debug_data(dev, __func__, write_length, buffer);
415 /* Write first page */
416 be_start_address = cpu_to_be16(start_address);
417 status = ti_vsend_sync(serial->serial->dev,
418 UMPC_MEMORY_WRITE, (__u16)address_type,
419 (__force __u16)be_start_address,
420 buffer, write_length);
422 dev_dbg(dev, "%s - ERROR %d\n", __func__, status);
426 length -= write_length;
427 start_address += write_length;
428 buffer += write_length;
430 /* We should be aligned now -- can write
431 max page size bytes at a time */
433 if (length > EPROM_PAGE_SIZE)
434 write_length = EPROM_PAGE_SIZE;
436 write_length = length;
438 dev_dbg(dev, "%s - Page Write Addr = %x, length = %d\n",
439 __func__, start_address, write_length);
440 usb_serial_debug_data(dev, __func__, write_length, buffer);
442 /* Write next page */
443 be_start_address = cpu_to_be16(start_address);
444 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE,
446 (__force __u16)be_start_address,
447 buffer, write_length);
449 dev_err(dev, "%s - ERROR %d\n", __func__, status);
453 length -= write_length;
454 start_address += write_length;
455 buffer += write_length;
460 /* Examine the UMP DMA registers and LSR
462 * Check the MSBit of the X and Y DMA byte count registers.
463 * A zero in this bit indicates that the TX DMA buffers are empty
464 * then check the TX Empty bit in the UART.
466 static int tx_active(struct edgeport_port *port)
469 struct out_endpoint_desc_block *oedb;
473 oedb = kmalloc(sizeof(*oedb), GFP_KERNEL);
475 dev_err(&port->port->dev, "%s - out of memory\n", __func__);
479 lsr = kmalloc(1, GFP_KERNEL); /* Sigh, that's right, just one byte,
480 as not all platforms can do DMA
486 /* Read the DMA Count Registers */
487 status = read_ram(port->port->serial->dev, port->dma_address,
488 sizeof(*oedb), (void *)oedb);
490 goto exit_is_tx_active;
492 dev_dbg(&port->port->dev, "%s - XByteCount 0x%X\n", __func__, oedb->XByteCount);
495 status = read_ram(port->port->serial->dev,
496 port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr);
499 goto exit_is_tx_active;
500 dev_dbg(&port->port->dev, "%s - LSR = 0x%X\n", __func__, *lsr);
502 /* If either buffer has data or we are transmitting then return TRUE */
503 if ((oedb->XByteCount & 0x80) != 0)
506 if ((*lsr & UMP_UART_LSR_TX_MASK) == 0)
509 /* We return Not Active if we get any kind of error */
511 dev_dbg(&port->port->dev, "%s - return %d\n", __func__, bytes_left);
518 static int choose_config(struct usb_device *dev)
521 * There may be multiple configurations on this device, in which case
522 * we would need to read and parse all of them to find out which one
523 * we want. However, we just support one config at this point,
524 * configuration # 1, which is Config Descriptor 0.
527 dev_dbg(&dev->dev, "%s - Number of Interfaces = %d\n",
528 __func__, dev->config->desc.bNumInterfaces);
529 dev_dbg(&dev->dev, "%s - MAX Power = %d\n",
530 __func__, dev->config->desc.bMaxPower * 2);
532 if (dev->config->desc.bNumInterfaces != 1) {
533 dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", __func__);
540 static int read_rom(struct edgeport_serial *serial,
541 int start_address, int length, __u8 *buffer)
545 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
546 status = read_download_mem(serial->serial->dev,
552 status = read_boot_mem(serial, start_address, length,
558 static int write_rom(struct edgeport_serial *serial, int start_address,
559 int length, __u8 *buffer)
561 if (serial->product_info.TiMode == TI_MODE_BOOT)
562 return write_boot_mem(serial, start_address, length,
565 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD)
566 return write_i2c_mem(serial, start_address, length,
567 serial->TI_I2C_Type, buffer);
573 /* Read a descriptor header from I2C based on type */
574 static int get_descriptor_addr(struct edgeport_serial *serial,
575 int desc_type, struct ti_i2c_desc *rom_desc)
580 /* Search for requested descriptor in I2C */
583 status = read_rom(serial,
585 sizeof(struct ti_i2c_desc),
590 if (rom_desc->Type == desc_type)
591 return start_address;
593 start_address = start_address + sizeof(struct ti_i2c_desc)
596 } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type);
601 /* Validate descriptor checksum */
602 static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer)
607 for (i = 0; i < rom_desc->Size; i++)
608 cs = (__u8)(cs + buffer[i]);
610 if (cs != rom_desc->CheckSum) {
611 pr_debug("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs);
617 /* Make sure that the I2C image is good */
618 static int check_i2c_image(struct edgeport_serial *serial)
620 struct device *dev = &serial->serial->dev->dev;
622 struct ti_i2c_desc *rom_desc;
623 int start_address = 2;
627 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
629 dev_err(dev, "%s - out of memory\n", __func__);
632 buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL);
634 dev_err(dev, "%s - out of memory when allocating buffer\n",
640 /* Read the first byte (Signature0) must be 0x52 or 0x10 */
641 status = read_rom(serial, 0, 1, buffer);
645 if (*buffer != UMP5152 && *buffer != UMP3410) {
646 dev_err(dev, "%s - invalid buffer signature\n", __func__);
652 /* Validate the I2C */
653 status = read_rom(serial,
655 sizeof(struct ti_i2c_desc),
660 if ((start_address + sizeof(struct ti_i2c_desc) +
661 rom_desc->Size) > TI_MAX_I2C_SIZE) {
663 dev_dbg(dev, "%s - structure too big, erroring out.\n", __func__);
667 dev_dbg(dev, "%s Type = 0x%x\n", __func__, rom_desc->Type);
669 /* Skip type 2 record */
670 ttype = rom_desc->Type & 0x0f;
671 if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC
672 && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) {
673 /* Read the descriptor data */
674 status = read_rom(serial, start_address +
675 sizeof(struct ti_i2c_desc),
676 rom_desc->Size, buffer);
680 status = valid_csum(rom_desc, buffer);
684 start_address = start_address + sizeof(struct ti_i2c_desc) +
687 } while ((rom_desc->Type != I2C_DESC_TYPE_ION) &&
688 (start_address < TI_MAX_I2C_SIZE));
690 if ((rom_desc->Type != I2C_DESC_TYPE_ION) ||
691 (start_address > TI_MAX_I2C_SIZE))
700 static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer)
704 struct ti_i2c_desc *rom_desc;
705 struct edge_ti_manuf_descriptor *desc;
706 struct device *dev = &serial->serial->dev->dev;
708 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
710 dev_err(dev, "%s - out of memory\n", __func__);
713 start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION,
716 if (!start_address) {
717 dev_dbg(dev, "%s - Edge Descriptor not found in I2C\n", __func__);
722 /* Read the descriptor data */
723 status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc),
724 rom_desc->Size, buffer);
728 status = valid_csum(rom_desc, buffer);
730 desc = (struct edge_ti_manuf_descriptor *)buffer;
731 dev_dbg(dev, "%s - IonConfig 0x%x\n", __func__, desc->IonConfig);
732 dev_dbg(dev, "%s - Version %d\n", __func__, desc->Version);
733 dev_dbg(dev, "%s - Cpu/Board 0x%x\n", __func__, desc->CpuRev_BoardRev);
734 dev_dbg(dev, "%s - NumPorts %d\n", __func__, desc->NumPorts);
735 dev_dbg(dev, "%s - NumVirtualPorts %d\n", __func__, desc->NumVirtualPorts);
736 dev_dbg(dev, "%s - TotalPorts %d\n", __func__, desc->TotalPorts);
743 /* Build firmware header used for firmware update */
744 static int build_i2c_fw_hdr(__u8 *header, struct device *dev)
751 struct ti_i2c_desc *i2c_header;
752 struct ti_i2c_image_header *img_header;
753 struct ti_i2c_firmware_rec *firmware_rec;
754 const struct firmware *fw;
755 const char *fw_name = "edgeport/down3.bin";
757 /* In order to update the I2C firmware we must change the type 2 record
758 * to type 0xF2. This will force the UMP to come up in Boot Mode.
759 * Then while in boot mode, the driver will download the latest
760 * firmware (padded to 15.5k) into the UMP ram. And finally when the
761 * device comes back up in download mode the driver will cause the new
762 * firmware to be copied from the UMP Ram to I2C and the firmware will
763 * update the record type from 0xf2 to 0x02.
766 /* Allocate a 15.5k buffer + 2 bytes for version number
767 * (Firmware Record) */
768 buffer_size = (((1024 * 16) - 512 ) +
769 sizeof(struct ti_i2c_firmware_rec));
771 buffer = kmalloc(buffer_size, GFP_KERNEL);
773 dev_err(dev, "%s - out of memory\n", __func__);
777 // Set entire image of 0xffs
778 memset(buffer, 0xff, buffer_size);
780 err = request_firmware(&fw, fw_name, dev);
782 dev_err(dev, "Failed to load image \"%s\" err %d\n",
788 /* Save Download Version Number */
789 OperationalMajorVersion = fw->data[0];
790 OperationalMinorVersion = fw->data[1];
791 OperationalBuildNumber = fw->data[2] | (fw->data[3] << 8);
793 /* Copy version number into firmware record */
794 firmware_rec = (struct ti_i2c_firmware_rec *)buffer;
796 firmware_rec->Ver_Major = OperationalMajorVersion;
797 firmware_rec->Ver_Minor = OperationalMinorVersion;
799 /* Pointer to fw_down memory image */
800 img_header = (struct ti_i2c_image_header *)&fw->data[4];
802 memcpy(buffer + sizeof(struct ti_i2c_firmware_rec),
803 &fw->data[4 + sizeof(struct ti_i2c_image_header)],
804 le16_to_cpu(img_header->Length));
806 release_firmware(fw);
808 for (i=0; i < buffer_size; i++) {
809 cs = (__u8)(cs + buffer[i]);
814 /* Build new header */
815 i2c_header = (struct ti_i2c_desc *)header;
816 firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data;
818 i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK;
819 i2c_header->Size = (__u16)buffer_size;
820 i2c_header->CheckSum = cs;
821 firmware_rec->Ver_Major = OperationalMajorVersion;
822 firmware_rec->Ver_Minor = OperationalMinorVersion;
827 /* Try to figure out what type of I2c we have */
828 static int i2c_type_bootmode(struct edgeport_serial *serial)
830 struct device *dev = &serial->serial->dev->dev;
834 data = kmalloc(1, GFP_KERNEL);
836 dev_err(dev, "%s - out of memory\n", __func__);
840 /* Try to read type 2 */
841 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
842 DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01);
844 dev_dbg(dev, "%s - read 2 status error = %d\n", __func__, status);
846 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data);
847 if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
848 dev_dbg(dev, "%s - ROM_TYPE_II\n", __func__);
849 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
853 /* Try to read type 3 */
854 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
855 DTK_ADDR_SPACE_I2C_TYPE_III, 0, data, 0x01);
857 dev_dbg(dev, "%s - read 3 status error = %d\n", __func__, status);
859 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data);
860 if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
861 dev_dbg(dev, "%s - ROM_TYPE_III\n", __func__);
862 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III;
866 dev_dbg(dev, "%s - Unknown\n", __func__);
867 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
874 static int bulk_xfer(struct usb_serial *serial, void *buffer,
875 int length, int *num_sent)
879 status = usb_bulk_msg(serial->dev,
880 usb_sndbulkpipe(serial->dev,
881 serial->port[0]->bulk_out_endpointAddress),
882 buffer, length, num_sent, 1000);
886 /* Download given firmware image to the device (IN BOOT MODE) */
887 static int download_code(struct edgeport_serial *serial, __u8 *image,
895 /* Transfer firmware image */
896 for (pos = 0; pos < image_length; ) {
897 /* Read the next buffer from file */
898 transfer = image_length - pos;
899 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE)
900 transfer = EDGE_FW_BULK_MAX_PACKET_SIZE;
903 status = bulk_xfer(serial->serial, &image[pos],
907 /* Advance buffer pointer */
915 static int config_boot_dev(struct usb_device *dev)
920 static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc)
922 return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev);
926 * DownloadTIFirmware - Download run-time operating firmware to the TI5052
928 * This routine downloads the main operating code into the TI5052, using the
929 * boot code already burned into E2PROM or ROM.
931 static int download_fw(struct edgeport_serial *serial)
933 struct device *dev = &serial->serial->dev->dev;
936 struct edge_ti_manuf_descriptor *ti_manuf_desc;
937 struct usb_interface_descriptor *interface;
938 int download_cur_ver;
939 int download_new_ver;
941 /* This routine is entered by both the BOOT mode and the Download mode
942 * We can determine which code is running by the reading the config
943 * descriptor and if we have only one bulk pipe it is in boot mode
945 serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP;
947 /* Default to type 2 i2c */
948 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
950 status = choose_config(serial->serial->dev);
954 interface = &serial->serial->interface->cur_altsetting->desc;
956 dev_err(dev, "%s - no interface set, error!\n", __func__);
961 * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING
962 * if we have more than one endpoint we are definitely in download
965 if (interface->bNumEndpoints > 1)
966 serial->product_info.TiMode = TI_MODE_DOWNLOAD;
968 /* Otherwise we will remain in configuring mode */
969 serial->product_info.TiMode = TI_MODE_CONFIGURING;
971 /********************************************************************/
973 /********************************************************************/
974 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
975 struct ti_i2c_desc *rom_desc;
977 dev_dbg(dev, "%s - RUNNING IN DOWNLOAD MODE\n", __func__);
979 status = check_i2c_image(serial);
981 dev_dbg(dev, "%s - DOWNLOAD MODE -- BAD I2C\n", __func__);
985 /* Validate Hardware version number
986 * Read Manufacturing Descriptor from TI Based Edgeport
988 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
989 if (!ti_manuf_desc) {
990 dev_err(dev, "%s - out of memory.\n", __func__);
993 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
995 kfree(ti_manuf_desc);
999 /* Check version number of ION descriptor */
1000 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
1001 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n",
1002 __func__, ti_cpu_rev(ti_manuf_desc));
1003 kfree(ti_manuf_desc);
1007 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
1009 dev_err(dev, "%s - out of memory.\n", __func__);
1010 kfree(ti_manuf_desc);
1014 /* Search for type 2 record (firmware record) */
1015 start_address = get_descriptor_addr(serial,
1016 I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc);
1017 if (start_address != 0) {
1018 struct ti_i2c_firmware_rec *firmware_version;
1021 dev_dbg(dev, "%s - Found Type FIRMWARE (Type 2) record\n", __func__);
1023 firmware_version = kmalloc(sizeof(*firmware_version),
1025 if (!firmware_version) {
1026 dev_err(dev, "%s - out of memory.\n", __func__);
1028 kfree(ti_manuf_desc);
1032 /* Validate version number
1033 * Read the descriptor data
1035 status = read_rom(serial, start_address +
1036 sizeof(struct ti_i2c_desc),
1037 sizeof(struct ti_i2c_firmware_rec),
1038 (__u8 *)firmware_version);
1040 kfree(firmware_version);
1042 kfree(ti_manuf_desc);
1046 /* Check version number of download with current
1048 download_cur_ver = (firmware_version->Ver_Major << 8) +
1049 (firmware_version->Ver_Minor);
1050 download_new_ver = (OperationalMajorVersion << 8) +
1051 (OperationalMinorVersion);
1053 dev_dbg(dev, "%s - >> FW Versions Device %d.%d Driver %d.%d\n",
1054 __func__, firmware_version->Ver_Major,
1055 firmware_version->Ver_Minor,
1056 OperationalMajorVersion,
1057 OperationalMinorVersion);
1059 /* Check if we have an old version in the I2C and
1060 update if necessary */
1061 if (download_cur_ver < download_new_ver) {
1062 dev_dbg(dev, "%s - Update I2C dld from %d.%d to %d.%d\n",
1064 firmware_version->Ver_Major,
1065 firmware_version->Ver_Minor,
1066 OperationalMajorVersion,
1067 OperationalMinorVersion);
1069 record = kmalloc(1, GFP_KERNEL);
1071 dev_err(dev, "%s - out of memory.\n",
1073 kfree(firmware_version);
1075 kfree(ti_manuf_desc);
1078 /* In order to update the I2C firmware we must
1079 * change the type 2 record to type 0xF2. This
1080 * will force the UMP to come up in Boot Mode.
1081 * Then while in boot mode, the driver will
1082 * download the latest firmware (padded to
1083 * 15.5k) into the UMP ram. Finally when the
1084 * device comes back up in download mode the
1085 * driver will cause the new firmware to be
1086 * copied from the UMP Ram to I2C and the
1087 * firmware will update the record type from
1090 *record = I2C_DESC_TYPE_FIRMWARE_BLANK;
1092 /* Change the I2C Firmware record type to
1093 0xf2 to trigger an update */
1094 status = write_rom(serial, start_address,
1095 sizeof(*record), record);
1098 kfree(firmware_version);
1100 kfree(ti_manuf_desc);
1104 /* verify the write -- must do this in order
1105 * for write to complete before we do the
1108 status = read_rom(serial,
1114 kfree(firmware_version);
1116 kfree(ti_manuf_desc);
1120 if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) {
1121 dev_err(dev, "%s - error resetting device\n", __func__);
1123 kfree(firmware_version);
1125 kfree(ti_manuf_desc);
1129 dev_dbg(dev, "%s - HARDWARE RESET\n", __func__);
1131 /* Reset UMP -- Back to BOOT MODE */
1132 status = ti_vsend_sync(serial->serial->dev,
1133 UMPC_HARDWARE_RESET,
1136 dev_dbg(dev, "%s - HARDWARE RESET return %d\n", __func__, status);
1138 /* return an error on purpose. */
1140 kfree(firmware_version);
1142 kfree(ti_manuf_desc);
1145 kfree(firmware_version);
1147 /* Search for type 0xF2 record (firmware blank record) */
1148 else if ((start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) {
1149 #define HEADER_SIZE (sizeof(struct ti_i2c_desc) + \
1150 sizeof(struct ti_i2c_firmware_rec))
1154 header = kmalloc(HEADER_SIZE, GFP_KERNEL);
1156 dev_err(dev, "%s - out of memory.\n", __func__);
1158 kfree(ti_manuf_desc);
1162 vheader = kmalloc(HEADER_SIZE, GFP_KERNEL);
1164 dev_err(dev, "%s - out of memory.\n", __func__);
1167 kfree(ti_manuf_desc);
1171 dev_dbg(dev, "%s - Found Type BLANK FIRMWARE (Type F2) record\n", __func__);
1174 * In order to update the I2C firmware we must change
1175 * the type 2 record to type 0xF2. This will force the
1176 * UMP to come up in Boot Mode. Then while in boot
1177 * mode, the driver will download the latest firmware
1178 * (padded to 15.5k) into the UMP ram. Finally when the
1179 * device comes back up in download mode the driver
1180 * will cause the new firmware to be copied from the
1181 * UMP Ram to I2C and the firmware will update the
1182 * record type from 0xf2 to 0x02.
1184 status = build_i2c_fw_hdr(header, dev);
1189 kfree(ti_manuf_desc);
1193 /* Update I2C with type 0xf2 record with correct
1194 size and checksum */
1195 status = write_rom(serial,
1203 kfree(ti_manuf_desc);
1207 /* verify the write -- must do this in order for
1208 write to complete before we do the hardware reset */
1209 status = read_rom(serial, start_address,
1210 HEADER_SIZE, vheader);
1213 dev_dbg(dev, "%s - can't read header back\n", __func__);
1217 kfree(ti_manuf_desc);
1220 if (memcmp(vheader, header, HEADER_SIZE)) {
1221 dev_dbg(dev, "%s - write download record failed\n", __func__);
1225 kfree(ti_manuf_desc);
1232 dev_dbg(dev, "%s - Start firmware update\n", __func__);
1234 /* Tell firmware to copy download image into I2C */
1235 status = ti_vsend_sync(serial->serial->dev,
1236 UMPC_COPY_DNLD_TO_I2C, 0, 0, NULL, 0);
1238 dev_dbg(dev, "%s - Update complete 0x%x\n", __func__, status);
1241 "%s - UMPC_COPY_DNLD_TO_I2C failed\n",
1244 kfree(ti_manuf_desc);
1249 // The device is running the download code
1251 kfree(ti_manuf_desc);
1255 /********************************************************************/
1257 /********************************************************************/
1258 dev_dbg(dev, "%s - RUNNING IN BOOT MODE\n", __func__);
1260 /* Configure the TI device so we can use the BULK pipes for download */
1261 status = config_boot_dev(serial->serial->dev);
1265 if (le16_to_cpu(serial->serial->dev->descriptor.idVendor)
1266 != USB_VENDOR_ID_ION) {
1267 dev_dbg(dev, "%s - VID = 0x%x\n", __func__,
1268 le16_to_cpu(serial->serial->dev->descriptor.idVendor));
1269 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1270 goto stayinbootmode;
1273 /* We have an ION device (I2c Must be programmed)
1274 Determine I2C image type */
1275 if (i2c_type_bootmode(serial))
1276 goto stayinbootmode;
1278 /* Check for ION Vendor ID and that the I2C is valid */
1279 if (!check_i2c_image(serial)) {
1280 struct ti_i2c_image_header *header;
1286 const struct firmware *fw;
1287 const char *fw_name = "edgeport/down3.bin";
1289 /* Validate Hardware version number
1290 * Read Manufacturing Descriptor from TI Based Edgeport
1292 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
1293 if (!ti_manuf_desc) {
1294 dev_err(dev, "%s - out of memory.\n", __func__);
1297 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
1299 kfree(ti_manuf_desc);
1300 goto stayinbootmode;
1303 /* Check for version 2 */
1304 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
1305 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n",
1306 __func__, ti_cpu_rev(ti_manuf_desc));
1307 kfree(ti_manuf_desc);
1308 goto stayinbootmode;
1311 kfree(ti_manuf_desc);
1314 * In order to update the I2C firmware we must change the type
1315 * 2 record to type 0xF2. This will force the UMP to come up
1316 * in Boot Mode. Then while in boot mode, the driver will
1317 * download the latest firmware (padded to 15.5k) into the
1318 * UMP ram. Finally when the device comes back up in download
1319 * mode the driver will cause the new firmware to be copied
1320 * from the UMP Ram to I2C and the firmware will update the
1321 * record type from 0xf2 to 0x02.
1323 * Do we really have to copy the whole firmware image,
1324 * or could we do this in place!
1327 /* Allocate a 15.5k buffer + 3 byte header */
1328 buffer_size = (((1024 * 16) - 512) +
1329 sizeof(struct ti_i2c_image_header));
1330 buffer = kmalloc(buffer_size, GFP_KERNEL);
1332 dev_err(dev, "%s - out of memory\n", __func__);
1336 /* Initialize the buffer to 0xff (pad the buffer) */
1337 memset(buffer, 0xff, buffer_size);
1339 err = request_firmware(&fw, fw_name, dev);
1341 dev_err(dev, "Failed to load image \"%s\" err %d\n",
1346 memcpy(buffer, &fw->data[4], fw->size - 4);
1347 release_firmware(fw);
1349 for (i = sizeof(struct ti_i2c_image_header);
1350 i < buffer_size; i++) {
1351 cs = (__u8)(cs + buffer[i]);
1354 header = (struct ti_i2c_image_header *)buffer;
1356 /* update length and checksum after padding */
1357 header->Length = cpu_to_le16((__u16)(buffer_size -
1358 sizeof(struct ti_i2c_image_header)));
1359 header->CheckSum = cs;
1361 /* Download the operational code */
1362 dev_dbg(dev, "%s - Downloading operational code image (TI UMP)\n", __func__);
1363 status = download_code(serial, buffer, buffer_size);
1368 dev_dbg(dev, "%s - Error downloading operational code image\n", __func__);
1372 /* Device will reboot */
1373 serial->product_info.TiMode = TI_MODE_TRANSITIONING;
1375 dev_dbg(dev, "%s - Download successful -- Device rebooting...\n", __func__);
1377 /* return an error on purpose */
1382 /* Eprom is invalid or blank stay in boot mode */
1383 dev_dbg(dev, "%s - STAYING IN BOOT MODE\n", __func__);
1384 serial->product_info.TiMode = TI_MODE_BOOT;
1390 static int ti_do_config(struct edgeport_port *port, int feature, int on)
1392 int port_number = port->port->port_number;
1394 on = !!on; /* 1 or 0 not bitmask */
1395 return send_cmd(port->port->serial->dev,
1396 feature, (__u8)(UMPM_UART1_PORT + port_number),
1401 static int restore_mcr(struct edgeport_port *port, __u8 mcr)
1405 dev_dbg(&port->port->dev, "%s - %x\n", __func__, mcr);
1407 status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR);
1410 status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS);
1413 return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK);
1416 /* Convert TI LSR to standard UART flags */
1417 static __u8 map_line_status(__u8 ti_lsr)
1421 #define MAP_FLAG(flagUmp, flagUart) \
1422 if (ti_lsr & flagUmp) \
1425 MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */
1426 MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */
1427 MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */
1428 MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */
1429 MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* rx data available */
1430 MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* tx hold reg empty */
1437 static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr)
1439 struct async_icount *icount;
1440 struct tty_struct *tty;
1442 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, msr);
1444 if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR |
1445 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
1446 icount = &edge_port->port->icount;
1448 /* update input line counters */
1449 if (msr & EDGEPORT_MSR_DELTA_CTS)
1451 if (msr & EDGEPORT_MSR_DELTA_DSR)
1453 if (msr & EDGEPORT_MSR_DELTA_CD)
1455 if (msr & EDGEPORT_MSR_DELTA_RI)
1457 wake_up_interruptible(&edge_port->port->port.delta_msr_wait);
1460 /* Save the new modem status */
1461 edge_port->shadow_msr = msr & 0xf0;
1463 tty = tty_port_tty_get(&edge_port->port->port);
1464 /* handle CTS flow control */
1465 if (tty && C_CRTSCTS(tty)) {
1466 if (msr & EDGEPORT_MSR_CTS) {
1467 tty->hw_stopped = 0;
1470 tty->hw_stopped = 1;
1476 static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data,
1477 __u8 lsr, __u8 data)
1479 struct async_icount *icount;
1480 __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR |
1481 LSR_FRM_ERR | LSR_BREAK));
1483 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, new_lsr);
1485 edge_port->shadow_lsr = lsr;
1487 if (new_lsr & LSR_BREAK)
1489 * Parity and Framing errors only count if they
1490 * occur exclusive of a break being received.
1492 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
1494 /* Place LSR data byte into Rx buffer */
1496 edge_tty_recv(edge_port->port, &data, 1);
1498 /* update input line counters */
1499 icount = &edge_port->port->icount;
1500 if (new_lsr & LSR_BREAK)
1502 if (new_lsr & LSR_OVER_ERR)
1504 if (new_lsr & LSR_PAR_ERR)
1506 if (new_lsr & LSR_FRM_ERR)
1511 static void edge_interrupt_callback(struct urb *urb)
1513 struct edgeport_serial *edge_serial = urb->context;
1514 struct usb_serial_port *port;
1515 struct edgeport_port *edge_port;
1517 unsigned char *data = urb->transfer_buffer;
1518 int length = urb->actual_length;
1524 int status = urb->status;
1533 /* this urb is terminated, clean up */
1534 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n",
1538 dev_err(&urb->dev->dev, "%s - nonzero urb status received: "
1539 "%d\n", __func__, status);
1544 dev_dbg(&urb->dev->dev, "%s - no data in urb\n", __func__);
1548 dev = &edge_serial->serial->dev->dev;
1549 usb_serial_debug_data(dev, __func__, length, data);
1552 dev_dbg(dev, "%s - expecting packet of size 2, got %d\n", __func__, length);
1556 port_number = TIUMP_GET_PORT_FROM_CODE(data[0]);
1557 function = TIUMP_GET_FUNC_FROM_CODE(data[0]);
1558 dev_dbg(dev, "%s - port_number %d, function %d, info 0x%x\n", __func__,
1559 port_number, function, data[1]);
1560 port = edge_serial->serial->port[port_number];
1561 edge_port = usb_get_serial_port_data(port);
1563 dev_dbg(dev, "%s - edge_port not found\n", __func__);
1567 case TIUMP_INTERRUPT_CODE_LSR:
1568 lsr = map_line_status(data[1]);
1569 if (lsr & UMP_UART_LSR_DATA_MASK) {
1570 /* Save the LSR event for bulk read
1571 completion routine */
1572 dev_dbg(dev, "%s - LSR Event Port %u LSR Status = %02x\n",
1573 __func__, port_number, lsr);
1574 edge_port->lsr_event = 1;
1575 edge_port->lsr_mask = lsr;
1577 dev_dbg(dev, "%s - ===== Port %d LSR Status = %02x ======\n",
1578 __func__, port_number, lsr);
1579 handle_new_lsr(edge_port, 0, lsr, 0);
1583 case TIUMP_INTERRUPT_CODE_MSR: /* MSR */
1584 /* Copy MSR from UMP */
1586 dev_dbg(dev, "%s - ===== Port %u MSR Status = %02x ======\n",
1587 __func__, port_number, msr);
1588 handle_new_msr(edge_port, msr);
1592 dev_err(&urb->dev->dev,
1593 "%s - Unknown Interrupt code from UMP %x\n",
1600 retval = usb_submit_urb(urb, GFP_ATOMIC);
1602 dev_err(&urb->dev->dev,
1603 "%s - usb_submit_urb failed with result %d\n",
1607 static void edge_bulk_in_callback(struct urb *urb)
1609 struct edgeport_port *edge_port = urb->context;
1610 struct device *dev = &edge_port->port->dev;
1611 unsigned char *data = urb->transfer_buffer;
1614 int status = urb->status;
1623 /* this urb is terminated, clean up */
1624 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status);
1627 dev_err(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", __func__, status);
1630 if (status == -EPIPE)
1634 dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__);
1638 port_number = edge_port->port->port_number;
1640 if (edge_port->lsr_event) {
1641 edge_port->lsr_event = 0;
1642 dev_dbg(dev, "%s ===== Port %u LSR Status = %02x, Data = %02x ======\n",
1643 __func__, port_number, edge_port->lsr_mask, *data);
1644 handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data);
1645 /* Adjust buffer length/pointer */
1646 --urb->actual_length;
1650 if (urb->actual_length) {
1651 usb_serial_debug_data(dev, __func__, urb->actual_length, data);
1652 if (edge_port->close_pending)
1653 dev_dbg(dev, "%s - close pending, dropping data on the floor\n",
1656 edge_tty_recv(edge_port->port, data,
1657 urb->actual_length);
1658 edge_port->port->icount.rx += urb->actual_length;
1662 /* continue read unless stopped */
1663 spin_lock(&edge_port->ep_lock);
1664 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
1665 retval = usb_submit_urb(urb, GFP_ATOMIC);
1666 else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING)
1667 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED;
1669 spin_unlock(&edge_port->ep_lock);
1671 dev_err(dev, "%s - usb_submit_urb failed with result %d\n", __func__, retval);
1674 static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
1679 queued = tty_insert_flip_string(&port->port, data, length);
1680 if (queued < length)
1681 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n",
1682 __func__, length - queued);
1683 tty_flip_buffer_push(&port->port);
1686 static void edge_bulk_out_callback(struct urb *urb)
1688 struct usb_serial_port *port = urb->context;
1689 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1690 int status = urb->status;
1691 struct tty_struct *tty;
1693 edge_port->ep_write_urb_in_use = 0;
1702 /* this urb is terminated, clean up */
1703 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n",
1707 dev_err_console(port, "%s - nonzero write bulk status "
1708 "received: %d\n", __func__, status);
1711 /* send any buffered data */
1712 tty = tty_port_tty_get(&port->port);
1713 edge_send(port, tty);
1717 static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
1719 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1720 struct edgeport_serial *edge_serial;
1721 struct usb_device *dev;
1726 u8 transaction_timeout;
1728 if (edge_port == NULL)
1731 port_number = port->port_number;
1733 dev = port->serial->dev;
1735 /* turn off loopback */
1736 status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0);
1739 "%s - cannot send clear loopback command, %d\n",
1744 /* set up the port settings */
1746 edge_set_termios(tty, port, &tty->termios);
1748 /* open up the port */
1750 /* milliseconds to timeout for DMA transfer */
1751 transaction_timeout = 2;
1753 edge_port->ump_read_timeout =
1754 max(20, ((transaction_timeout * 3) / 2));
1756 /* milliseconds to timeout for DMA transfer */
1757 open_settings = (u8)(UMP_DMA_MODE_CONTINOUS |
1758 UMP_PIPE_TRANS_TIMEOUT_ENA |
1759 (transaction_timeout << 2));
1761 dev_dbg(&port->dev, "%s - Sending UMPC_OPEN_PORT\n", __func__);
1763 /* Tell TI to open and start the port */
1764 status = send_cmd(dev, UMPC_OPEN_PORT,
1765 (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0);
1767 dev_err(&port->dev, "%s - cannot send open command, %d\n",
1772 /* Start the DMA? */
1773 status = send_cmd(dev, UMPC_START_PORT,
1774 (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0);
1776 dev_err(&port->dev, "%s - cannot send start DMA command, %d\n",
1781 /* Clear TX and RX buffers in UMP */
1782 status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN);
1785 "%s - cannot send clear buffers command, %d\n",
1790 /* Read Initial MSR */
1791 status = ti_vread_sync(dev, UMPC_READ_MSR, 0,
1792 (__u16)(UMPM_UART1_PORT + port_number),
1793 &edge_port->shadow_msr, 1);
1795 dev_err(&port->dev, "%s - cannot send read MSR command, %d\n",
1800 dev_dbg(&port->dev, "ShadowMSR 0x%X\n", edge_port->shadow_msr);
1802 /* Set Initial MCR */
1803 edge_port->shadow_mcr = MCR_RTS | MCR_DTR;
1804 dev_dbg(&port->dev, "ShadowMCR 0x%X\n", edge_port->shadow_mcr);
1806 edge_serial = edge_port->edge_serial;
1807 if (mutex_lock_interruptible(&edge_serial->es_lock))
1808 return -ERESTARTSYS;
1809 if (edge_serial->num_ports_open == 0) {
1810 /* we are the first port to open, post the interrupt urb */
1811 urb = edge_serial->serial->port[0]->interrupt_in_urb;
1814 "%s - no interrupt urb present, exiting\n",
1817 goto release_es_lock;
1819 urb->context = edge_serial;
1820 status = usb_submit_urb(urb, GFP_KERNEL);
1823 "%s - usb_submit_urb failed with value %d\n",
1825 goto release_es_lock;
1830 * reset the data toggle on the bulk endpoints to work around bug in
1831 * host controllers where things get out of sync some times
1833 usb_clear_halt(dev, port->write_urb->pipe);
1834 usb_clear_halt(dev, port->read_urb->pipe);
1836 /* start up our bulk read urb */
1837 urb = port->read_urb;
1839 dev_err(&port->dev, "%s - no read urb present, exiting\n",
1842 goto unlink_int_urb;
1844 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
1845 urb->context = edge_port;
1846 status = usb_submit_urb(urb, GFP_KERNEL);
1849 "%s - read bulk usb_submit_urb failed with value %d\n",
1851 goto unlink_int_urb;
1854 ++edge_serial->num_ports_open;
1856 goto release_es_lock;
1859 if (edge_port->edge_serial->num_ports_open == 0)
1860 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
1862 mutex_unlock(&edge_serial->es_lock);
1866 static void edge_close(struct usb_serial_port *port)
1868 struct edgeport_serial *edge_serial;
1869 struct edgeport_port *edge_port;
1870 struct usb_serial *serial = port->serial;
1871 unsigned long flags;
1874 edge_serial = usb_get_serial_data(port->serial);
1875 edge_port = usb_get_serial_port_data(port);
1876 if (edge_serial == NULL || edge_port == NULL)
1879 /* The bulkreadcompletion routine will check
1880 * this flag and dump add read data */
1881 edge_port->close_pending = 1;
1883 usb_kill_urb(port->read_urb);
1884 usb_kill_urb(port->write_urb);
1885 edge_port->ep_write_urb_in_use = 0;
1886 spin_lock_irqsave(&edge_port->ep_lock, flags);
1887 kfifo_reset_out(&port->write_fifo);
1888 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1890 dev_dbg(&port->dev, "%s - send umpc_close_port\n", __func__);
1891 port_number = port->port_number;
1892 send_cmd(serial->dev, UMPC_CLOSE_PORT,
1893 (__u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0);
1895 mutex_lock(&edge_serial->es_lock);
1896 --edge_port->edge_serial->num_ports_open;
1897 if (edge_port->edge_serial->num_ports_open <= 0) {
1898 /* last port is now closed, let's shut down our interrupt urb */
1899 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
1900 edge_port->edge_serial->num_ports_open = 0;
1902 mutex_unlock(&edge_serial->es_lock);
1903 edge_port->close_pending = 0;
1906 static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
1907 const unsigned char *data, int count)
1909 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1912 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__);
1916 if (edge_port == NULL)
1918 if (edge_port->close_pending == 1)
1921 count = kfifo_in_locked(&port->write_fifo, data, count,
1922 &edge_port->ep_lock);
1923 edge_send(port, tty);
1928 static void edge_send(struct usb_serial_port *port, struct tty_struct *tty)
1931 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1932 unsigned long flags;
1934 spin_lock_irqsave(&edge_port->ep_lock, flags);
1936 if (edge_port->ep_write_urb_in_use) {
1937 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1941 count = kfifo_out(&port->write_fifo,
1942 port->write_urb->transfer_buffer,
1943 port->bulk_out_size);
1946 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1950 edge_port->ep_write_urb_in_use = 1;
1952 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1954 usb_serial_debug_data(&port->dev, __func__, count, port->write_urb->transfer_buffer);
1956 /* set up our urb */
1957 port->write_urb->transfer_buffer_length = count;
1959 /* send the data out the bulk port */
1960 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
1962 dev_err_console(port,
1963 "%s - failed submitting write urb, error %d\n",
1965 edge_port->ep_write_urb_in_use = 0;
1966 /* TODO: reschedule edge_send */
1968 edge_port->port->icount.tx += count;
1970 /* wakeup any process waiting for writes to complete */
1971 /* there is now more room in the buffer for new writes */
1976 static int edge_write_room(struct tty_struct *tty)
1978 struct usb_serial_port *port = tty->driver_data;
1979 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1981 unsigned long flags;
1983 if (edge_port == NULL)
1985 if (edge_port->close_pending == 1)
1988 spin_lock_irqsave(&edge_port->ep_lock, flags);
1989 room = kfifo_avail(&port->write_fifo);
1990 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1992 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room);
1996 static int edge_chars_in_buffer(struct tty_struct *tty)
1998 struct usb_serial_port *port = tty->driver_data;
1999 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2001 unsigned long flags;
2002 if (edge_port == NULL)
2005 spin_lock_irqsave(&edge_port->ep_lock, flags);
2006 chars = kfifo_len(&port->write_fifo);
2007 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2009 dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars);
2013 static bool edge_tx_empty(struct usb_serial_port *port)
2015 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2018 ret = tx_active(edge_port);
2025 static void edge_throttle(struct tty_struct *tty)
2027 struct usb_serial_port *port = tty->driver_data;
2028 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2031 if (edge_port == NULL)
2034 /* if we are implementing XON/XOFF, send the stop character */
2036 unsigned char stop_char = STOP_CHAR(tty);
2037 status = edge_write(tty, port, &stop_char, 1);
2039 dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status);
2043 /* if we are implementing RTS/CTS, stop reads */
2044 /* and the Edgeport will clear the RTS line */
2046 stop_read(edge_port);
2050 static void edge_unthrottle(struct tty_struct *tty)
2052 struct usb_serial_port *port = tty->driver_data;
2053 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2056 if (edge_port == NULL)
2059 /* if we are implementing XON/XOFF, send the start character */
2061 unsigned char start_char = START_CHAR(tty);
2062 status = edge_write(tty, port, &start_char, 1);
2064 dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status);
2067 /* if we are implementing RTS/CTS, restart reads */
2068 /* are the Edgeport will assert the RTS line */
2069 if (C_CRTSCTS(tty)) {
2070 status = restart_read(edge_port);
2073 "%s - read bulk usb_submit_urb failed: %d\n",
2079 static void stop_read(struct edgeport_port *edge_port)
2081 unsigned long flags;
2083 spin_lock_irqsave(&edge_port->ep_lock, flags);
2085 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
2086 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING;
2087 edge_port->shadow_mcr &= ~MCR_RTS;
2089 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2092 static int restart_read(struct edgeport_port *edge_port)
2096 unsigned long flags;
2098 spin_lock_irqsave(&edge_port->ep_lock, flags);
2100 if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) {
2101 urb = edge_port->port->read_urb;
2102 status = usb_submit_urb(urb, GFP_ATOMIC);
2104 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
2105 edge_port->shadow_mcr |= MCR_RTS;
2107 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2112 static void change_port_settings(struct tty_struct *tty,
2113 struct edgeport_port *edge_port, struct ktermios *old_termios)
2115 struct device *dev = &edge_port->port->dev;
2116 struct ump_uart_config *config;
2120 int port_number = edge_port->port->port_number;
2122 config = kmalloc (sizeof (*config), GFP_KERNEL);
2124 tty->termios = *old_termios;
2125 dev_err(dev, "%s - out of memory\n", __func__);
2129 cflag = tty->termios.c_cflag;
2133 /* These flags must be set */
2134 config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT;
2135 config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR;
2136 config->bUartMode = (__u8)(edge_port->bUartMode);
2138 switch (cflag & CSIZE) {
2140 config->bDataBits = UMP_UART_CHAR5BITS;
2141 dev_dbg(dev, "%s - data bits = 5\n", __func__);
2144 config->bDataBits = UMP_UART_CHAR6BITS;
2145 dev_dbg(dev, "%s - data bits = 6\n", __func__);
2148 config->bDataBits = UMP_UART_CHAR7BITS;
2149 dev_dbg(dev, "%s - data bits = 7\n", __func__);
2153 config->bDataBits = UMP_UART_CHAR8BITS;
2154 dev_dbg(dev, "%s - data bits = 8\n", __func__);
2158 if (cflag & PARENB) {
2159 if (cflag & PARODD) {
2160 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2161 config->bParity = UMP_UART_ODDPARITY;
2162 dev_dbg(dev, "%s - parity = odd\n", __func__);
2164 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2165 config->bParity = UMP_UART_EVENPARITY;
2166 dev_dbg(dev, "%s - parity = even\n", __func__);
2169 config->bParity = UMP_UART_NOPARITY;
2170 dev_dbg(dev, "%s - parity = none\n", __func__);
2173 if (cflag & CSTOPB) {
2174 config->bStopBits = UMP_UART_STOPBIT2;
2175 dev_dbg(dev, "%s - stop bits = 2\n", __func__);
2177 config->bStopBits = UMP_UART_STOPBIT1;
2178 dev_dbg(dev, "%s - stop bits = 1\n", __func__);
2181 /* figure out the flow control settings */
2182 if (cflag & CRTSCTS) {
2183 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW;
2184 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW;
2185 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__);
2187 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__);
2188 tty->hw_stopped = 0;
2189 restart_read(edge_port);
2192 /* if we are implementing XON/XOFF, set the start and stop
2193 character in the device */
2194 config->cXon = START_CHAR(tty);
2195 config->cXoff = STOP_CHAR(tty);
2197 /* if we are implementing INBOUND XON/XOFF */
2199 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X;
2200 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2201 __func__, config->cXon, config->cXoff);
2203 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__);
2205 /* if we are implementing OUTBOUND XON/XOFF */
2207 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X;
2208 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2209 __func__, config->cXon, config->cXoff);
2211 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__);
2213 tty->termios.c_cflag &= ~CMSPAR;
2215 /* Round the baud rate */
2216 baud = tty_get_baud_rate(tty);
2218 /* pick a default, any default... */
2221 tty_encode_baud_rate(tty, baud, baud);
2223 edge_port->baud_rate = baud;
2224 config->wBaudRate = (__u16)((461550L + baud/2) / baud);
2226 /* FIXME: Recompute actual baud from divisor here */
2228 dev_dbg(dev, "%s - baud rate = %d, wBaudRate = %d\n", __func__, baud, config->wBaudRate);
2230 dev_dbg(dev, "wBaudRate: %d\n", (int)(461550L / config->wBaudRate));
2231 dev_dbg(dev, "wFlags: 0x%x\n", config->wFlags);
2232 dev_dbg(dev, "bDataBits: %d\n", config->bDataBits);
2233 dev_dbg(dev, "bParity: %d\n", config->bParity);
2234 dev_dbg(dev, "bStopBits: %d\n", config->bStopBits);
2235 dev_dbg(dev, "cXon: %d\n", config->cXon);
2236 dev_dbg(dev, "cXoff: %d\n", config->cXoff);
2237 dev_dbg(dev, "bUartMode: %d\n", config->bUartMode);
2239 /* move the word values into big endian mode */
2240 cpu_to_be16s(&config->wFlags);
2241 cpu_to_be16s(&config->wBaudRate);
2243 status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG,
2244 (__u8)(UMPM_UART1_PORT + port_number),
2245 0, (__u8 *)config, sizeof(*config));
2247 dev_dbg(dev, "%s - error %d when trying to write config to device\n",
2252 static void edge_set_termios(struct tty_struct *tty,
2253 struct usb_serial_port *port, struct ktermios *old_termios)
2255 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2258 cflag = tty->termios.c_cflag;
2260 dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__,
2261 tty->termios.c_cflag, tty->termios.c_iflag);
2262 dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__,
2263 old_termios->c_cflag, old_termios->c_iflag);
2265 if (edge_port == NULL)
2267 /* change the port settings to the new ones specified */
2268 change_port_settings(tty, edge_port, old_termios);
2271 static int edge_tiocmset(struct tty_struct *tty,
2272 unsigned int set, unsigned int clear)
2274 struct usb_serial_port *port = tty->driver_data;
2275 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2277 unsigned long flags;
2279 spin_lock_irqsave(&edge_port->ep_lock, flags);
2280 mcr = edge_port->shadow_mcr;
2281 if (set & TIOCM_RTS)
2283 if (set & TIOCM_DTR)
2285 if (set & TIOCM_LOOP)
2286 mcr |= MCR_LOOPBACK;
2288 if (clear & TIOCM_RTS)
2290 if (clear & TIOCM_DTR)
2292 if (clear & TIOCM_LOOP)
2293 mcr &= ~MCR_LOOPBACK;
2295 edge_port->shadow_mcr = mcr;
2296 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2298 restore_mcr(edge_port, mcr);
2302 static int edge_tiocmget(struct tty_struct *tty)
2304 struct usb_serial_port *port = tty->driver_data;
2305 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2306 unsigned int result = 0;
2309 unsigned long flags;
2311 spin_lock_irqsave(&edge_port->ep_lock, flags);
2313 msr = edge_port->shadow_msr;
2314 mcr = edge_port->shadow_mcr;
2315 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */
2316 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */
2317 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */
2318 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */
2319 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */
2320 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */
2323 dev_dbg(&port->dev, "%s -- %x\n", __func__, result);
2324 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2329 static int get_serial_info(struct edgeport_port *edge_port,
2330 struct serial_struct __user *retinfo)
2332 struct serial_struct tmp;
2338 cwait = edge_port->port->port.closing_wait;
2339 if (cwait != ASYNC_CLOSING_WAIT_NONE)
2340 cwait = jiffies_to_msecs(cwait) / 10;
2342 memset(&tmp, 0, sizeof(tmp));
2344 tmp.type = PORT_16550A;
2345 tmp.line = edge_port->port->minor;
2346 tmp.port = edge_port->port->port_number;
2348 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
2349 tmp.xmit_fifo_size = edge_port->port->bulk_out_size;
2350 tmp.baud_base = 9600;
2351 tmp.close_delay = 5*HZ;
2352 tmp.closing_wait = cwait;
2354 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2359 static int edge_ioctl(struct tty_struct *tty,
2360 unsigned int cmd, unsigned long arg)
2362 struct usb_serial_port *port = tty->driver_data;
2363 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2365 dev_dbg(&port->dev, "%s - cmd = 0x%x\n", __func__, cmd);
2369 dev_dbg(&port->dev, "%s - TIOCGSERIAL\n", __func__);
2370 return get_serial_info(edge_port,
2371 (struct serial_struct __user *) arg);
2373 return -ENOIOCTLCMD;
2376 static void edge_break(struct tty_struct *tty, int break_state)
2378 struct usb_serial_port *port = tty->driver_data;
2379 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2381 int bv = 0; /* Off */
2383 if (break_state == -1)
2385 status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv);
2387 dev_dbg(&port->dev, "%s - error %d sending break set/clear command.\n",
2391 static int edge_startup(struct usb_serial *serial)
2393 struct edgeport_serial *edge_serial;
2396 /* create our private serial structure */
2397 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
2398 if (edge_serial == NULL) {
2399 dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__);
2402 mutex_init(&edge_serial->es_lock);
2403 edge_serial->serial = serial;
2404 usb_set_serial_data(serial, edge_serial);
2406 status = download_fw(edge_serial);
2415 static void edge_disconnect(struct usb_serial *serial)
2419 static void edge_release(struct usb_serial *serial)
2421 kfree(usb_get_serial_data(serial));
2424 static int edge_port_probe(struct usb_serial_port *port)
2426 struct edgeport_port *edge_port;
2429 edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL);
2433 spin_lock_init(&edge_port->ep_lock);
2434 edge_port->port = port;
2435 edge_port->edge_serial = usb_get_serial_data(port->serial);
2436 edge_port->bUartMode = default_uart_mode;
2438 switch (port->port_number) {
2440 edge_port->uart_base = UMPMEM_BASE_UART1;
2441 edge_port->dma_address = UMPD_OEDB1_ADDRESS;
2444 edge_port->uart_base = UMPMEM_BASE_UART2;
2445 edge_port->dma_address = UMPD_OEDB2_ADDRESS;
2448 dev_err(&port->dev, "unknown port number\n");
2454 "%s - port_number = %d, uart_base = %04x, dma_address = %04x\n",
2455 __func__, port->port_number, edge_port->uart_base,
2456 edge_port->dma_address);
2458 usb_set_serial_port_data(port, edge_port);
2460 ret = edge_create_sysfs_attrs(port);
2464 port->port.closing_wait = msecs_to_jiffies(closing_wait * 10);
2465 port->port.drain_delay = 1;
2474 static int edge_port_remove(struct usb_serial_port *port)
2476 struct edgeport_port *edge_port;
2478 edge_port = usb_get_serial_port_data(port);
2479 edge_remove_sysfs_attrs(port);
2485 /* Sysfs Attributes */
2487 static ssize_t uart_mode_show(struct device *dev,
2488 struct device_attribute *attr, char *buf)
2490 struct usb_serial_port *port = to_usb_serial_port(dev);
2491 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2493 return sprintf(buf, "%d\n", edge_port->bUartMode);
2496 static ssize_t uart_mode_store(struct device *dev,
2497 struct device_attribute *attr, const char *valbuf, size_t count)
2499 struct usb_serial_port *port = to_usb_serial_port(dev);
2500 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2501 unsigned int v = simple_strtoul(valbuf, NULL, 0);
2503 dev_dbg(dev, "%s: setting uart_mode = %d\n", __func__, v);
2506 edge_port->bUartMode = v;
2508 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v);
2512 static DEVICE_ATTR_RW(uart_mode);
2514 static int edge_create_sysfs_attrs(struct usb_serial_port *port)
2516 return device_create_file(&port->dev, &dev_attr_uart_mode);
2519 static int edge_remove_sysfs_attrs(struct usb_serial_port *port)
2521 device_remove_file(&port->dev, &dev_attr_uart_mode);
2526 static struct usb_serial_driver edgeport_1port_device = {
2528 .owner = THIS_MODULE,
2529 .name = "edgeport_ti_1",
2531 .description = "Edgeport TI 1 port adapter",
2532 .id_table = edgeport_1port_id_table,
2535 .close = edge_close,
2536 .throttle = edge_throttle,
2537 .unthrottle = edge_unthrottle,
2538 .attach = edge_startup,
2539 .disconnect = edge_disconnect,
2540 .release = edge_release,
2541 .port_probe = edge_port_probe,
2542 .port_remove = edge_port_remove,
2543 .ioctl = edge_ioctl,
2544 .set_termios = edge_set_termios,
2545 .tiocmget = edge_tiocmget,
2546 .tiocmset = edge_tiocmset,
2547 .tiocmiwait = usb_serial_generic_tiocmiwait,
2548 .get_icount = usb_serial_generic_get_icount,
2549 .write = edge_write,
2550 .write_room = edge_write_room,
2551 .chars_in_buffer = edge_chars_in_buffer,
2552 .tx_empty = edge_tx_empty,
2553 .break_ctl = edge_break,
2554 .read_int_callback = edge_interrupt_callback,
2555 .read_bulk_callback = edge_bulk_in_callback,
2556 .write_bulk_callback = edge_bulk_out_callback,
2559 static struct usb_serial_driver edgeport_2port_device = {
2561 .owner = THIS_MODULE,
2562 .name = "edgeport_ti_2",
2564 .description = "Edgeport TI 2 port adapter",
2565 .id_table = edgeport_2port_id_table,
2568 .close = edge_close,
2569 .throttle = edge_throttle,
2570 .unthrottle = edge_unthrottle,
2571 .attach = edge_startup,
2572 .disconnect = edge_disconnect,
2573 .release = edge_release,
2574 .port_probe = edge_port_probe,
2575 .port_remove = edge_port_remove,
2576 .ioctl = edge_ioctl,
2577 .set_termios = edge_set_termios,
2578 .tiocmget = edge_tiocmget,
2579 .tiocmset = edge_tiocmset,
2580 .tiocmiwait = usb_serial_generic_tiocmiwait,
2581 .get_icount = usb_serial_generic_get_icount,
2582 .write = edge_write,
2583 .write_room = edge_write_room,
2584 .chars_in_buffer = edge_chars_in_buffer,
2585 .tx_empty = edge_tx_empty,
2586 .break_ctl = edge_break,
2587 .read_int_callback = edge_interrupt_callback,
2588 .read_bulk_callback = edge_bulk_in_callback,
2589 .write_bulk_callback = edge_bulk_out_callback,
2592 static struct usb_serial_driver * const serial_drivers[] = {
2593 &edgeport_1port_device, &edgeport_2port_device, NULL
2596 module_usb_serial_driver(serial_drivers, id_table_combined);
2598 MODULE_AUTHOR(DRIVER_AUTHOR);
2599 MODULE_DESCRIPTION(DRIVER_DESC);
2600 MODULE_LICENSE("GPL");
2601 MODULE_FIRMWARE("edgeport/down3.bin");
2603 module_param(closing_wait, int, S_IRUGO | S_IWUSR);
2604 MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs");
2606 module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR);
2607 MODULE_PARM_DESC(ignore_cpu_rev,
2608 "Ignore the cpu revision when connecting to a device");
2610 module_param(default_uart_mode, int, S_IRUGO | S_IWUSR);
2611 MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ...");