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 */
67 #define EDGE_OUT_BUF_SIZE 1024
70 /* Product information read from the Edgeport */
72 int TiMode; /* Current TI Mode */
73 __u8 hardware_type; /* Type of hardware */
74 } __attribute__((packed));
76 struct edgeport_port {
83 __u32 ump_read_timeout; /* Number of milliseconds the UMP will
84 wait without data before completing
89 struct async_icount icount;
90 wait_queue_head_t delta_msr_wait; /* for handling sleeping while
91 waiting for msr change to
93 struct edgeport_serial *edge_serial;
94 struct usb_serial_port *port;
95 __u8 bUartMode; /* Port type, 0: RS232, etc. */
97 int ep_read_urb_state;
98 int ep_write_urb_in_use;
99 struct kfifo write_fifo;
102 struct edgeport_serial {
103 struct product_info product_info;
104 u8 TI_I2C_Type; /* Type of I2C in UMP */
105 u8 TiReadI2C; /* Set to TRUE if we have read the
107 struct mutex es_lock;
109 struct usb_serial *serial;
113 /* Devices that this driver supports */
114 static const struct usb_device_id edgeport_1port_id_table[] = {
115 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
116 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
117 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
118 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
119 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
120 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
121 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
122 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
123 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
124 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
125 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
126 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
127 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
128 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
129 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
130 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
134 static const struct usb_device_id edgeport_2port_id_table[] = {
135 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
136 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
137 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
138 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
139 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
140 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
141 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
142 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
143 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
144 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
145 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
146 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
147 /* The 4, 8 and 16 port devices show up as multiple 2 port devices */
148 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
149 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
150 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
151 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
152 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
156 /* Devices that this driver supports */
157 static const struct usb_device_id id_table_combined[] = {
158 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
159 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
160 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
161 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
162 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
163 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
164 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
165 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
166 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
167 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
168 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
169 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
170 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
171 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
172 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
173 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
174 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
175 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
176 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
177 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
178 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
179 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
180 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
181 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
182 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
183 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
184 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
185 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
186 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
187 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
188 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
189 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
190 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
194 MODULE_DEVICE_TABLE(usb, id_table_combined);
196 static unsigned char OperationalMajorVersion;
197 static unsigned char OperationalMinorVersion;
198 static unsigned short OperationalBuildNumber;
200 static int closing_wait = EDGE_CLOSING_WAIT;
201 static bool ignore_cpu_rev;
202 static int default_uart_mode; /* RS232 */
204 static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
207 static void stop_read(struct edgeport_port *edge_port);
208 static int restart_read(struct edgeport_port *edge_port);
210 static void edge_set_termios(struct tty_struct *tty,
211 struct usb_serial_port *port, struct ktermios *old_termios);
212 static void edge_send(struct tty_struct *tty);
214 /* sysfs attributes */
215 static int edge_create_sysfs_attrs(struct usb_serial_port *port);
216 static int edge_remove_sysfs_attrs(struct usb_serial_port *port);
219 static int ti_vread_sync(struct usb_device *dev, __u8 request,
220 __u16 value, __u16 index, u8 *data, int size)
224 status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request,
225 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN),
226 value, index, data, size, 1000);
229 if (status != size) {
230 dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n",
231 __func__, size, status);
237 static int ti_vsend_sync(struct usb_device *dev, __u8 request,
238 __u16 value, __u16 index, u8 *data, int size)
242 status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request,
243 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT),
244 value, index, data, size, 1000);
247 if (status != size) {
248 dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n",
249 __func__, size, status);
255 static int send_cmd(struct usb_device *dev, __u8 command,
256 __u8 moduleid, __u16 value, u8 *data,
259 return ti_vsend_sync(dev, command, value, moduleid, data, size);
262 /* clear tx/rx buffers and fifo in TI UMP */
263 static int purge_port(struct usb_serial_port *port, __u16 mask)
265 int port_number = port->number - port->serial->minor;
267 dev_dbg(&port->dev, "%s - port %d, mask %x\n", __func__, port_number, mask);
269 return send_cmd(port->serial->dev,
271 (__u8)(UMPM_UART1_PORT + port_number),
278 * read_download_mem - Read edgeport memory from TI chip
279 * @dev: usb device pointer
280 * @start_address: Device CPU address at which to read
281 * @length: Length of above data
282 * @address_type: Can read both XDATA and I2C
283 * @buffer: pointer to input data buffer
285 static int read_download_mem(struct usb_device *dev, int start_address,
286 int length, __u8 address_type, __u8 *buffer)
290 __be16 be_start_address;
292 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, length);
294 /* Read in blocks of 64 bytes
295 * (TI firmware can't handle more than 64 byte reads)
301 read_length = (__u8)length;
303 if (read_length > 1) {
304 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, read_length);
306 be_start_address = cpu_to_be16(start_address);
307 status = ti_vread_sync(dev, UMPC_MEMORY_READ,
309 (__force __u16)be_start_address,
310 buffer, read_length);
313 dev_dbg(&dev->dev, "%s - ERROR %x\n", __func__, status);
318 usb_serial_debug_data(&dev->dev, __func__, read_length, buffer);
320 /* Update pointers/length */
321 start_address += read_length;
322 buffer += read_length;
323 length -= read_length;
329 static int read_ram(struct usb_device *dev, int start_address,
330 int length, __u8 *buffer)
332 return read_download_mem(dev, start_address, length,
333 DTK_ADDR_SPACE_XDATA, buffer);
336 /* Read edgeport memory to a given block */
337 static int read_boot_mem(struct edgeport_serial *serial,
338 int start_address, int length, __u8 *buffer)
343 for (i = 0; i < length; i++) {
344 status = ti_vread_sync(serial->serial->dev,
345 UMPC_MEMORY_READ, serial->TI_I2C_Type,
346 (__u16)(start_address+i), &buffer[i], 0x01);
348 dev_dbg(&serial->serial->dev->dev, "%s - ERROR %x\n", __func__, status);
353 dev_dbg(&serial->serial->dev->dev, "%s - start_address = %x, length = %d\n",
354 __func__, start_address, length);
355 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer);
357 serial->TiReadI2C = 1;
362 /* Write given block to TI EPROM memory */
363 static int write_boot_mem(struct edgeport_serial *serial,
364 int start_address, int length, __u8 *buffer)
370 /* Must do a read before write */
371 if (!serial->TiReadI2C) {
372 temp = kmalloc(1, GFP_KERNEL);
374 dev_err(&serial->serial->dev->dev,
375 "%s - out of memory\n", __func__);
378 status = read_boot_mem(serial, 0, 1, temp);
384 for (i = 0; i < length; ++i) {
385 status = ti_vsend_sync(serial->serial->dev,
386 UMPC_MEMORY_WRITE, buffer[i],
387 (__u16)(i + start_address), NULL, 0);
392 dev_dbg(&serial->serial->dev->dev, "%s - start_sddr = %x, length = %d\n", __func__, start_address, length);
393 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer);
399 /* Write edgeport I2C memory to TI chip */
400 static int write_i2c_mem(struct edgeport_serial *serial,
401 int start_address, int length, __u8 address_type, __u8 *buffer)
403 struct device *dev = &serial->serial->dev->dev;
406 __be16 be_start_address;
408 /* We can only send a maximum of 1 aligned byte page at a time */
410 /* calculate the number of bytes left in the first page */
411 write_length = EPROM_PAGE_SIZE -
412 (start_address & (EPROM_PAGE_SIZE - 1));
414 if (write_length > length)
415 write_length = length;
417 dev_dbg(dev, "%s - BytesInFirstPage Addr = %x, length = %d\n",
418 __func__, start_address, write_length);
419 usb_serial_debug_data(dev, __func__, write_length, buffer);
421 /* Write first page */
422 be_start_address = cpu_to_be16(start_address);
423 status = ti_vsend_sync(serial->serial->dev,
424 UMPC_MEMORY_WRITE, (__u16)address_type,
425 (__force __u16)be_start_address,
426 buffer, write_length);
428 dev_dbg(dev, "%s - ERROR %d\n", __func__, status);
432 length -= write_length;
433 start_address += write_length;
434 buffer += write_length;
436 /* We should be aligned now -- can write
437 max page size bytes at a time */
439 if (length > EPROM_PAGE_SIZE)
440 write_length = EPROM_PAGE_SIZE;
442 write_length = length;
444 dev_dbg(dev, "%s - Page Write Addr = %x, length = %d\n",
445 __func__, start_address, write_length);
446 usb_serial_debug_data(dev, __func__, write_length, buffer);
448 /* Write next page */
449 be_start_address = cpu_to_be16(start_address);
450 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE,
452 (__force __u16)be_start_address,
453 buffer, write_length);
455 dev_err(dev, "%s - ERROR %d\n", __func__, status);
459 length -= write_length;
460 start_address += write_length;
461 buffer += write_length;
466 /* Examine the UMP DMA registers and LSR
468 * Check the MSBit of the X and Y DMA byte count registers.
469 * A zero in this bit indicates that the TX DMA buffers are empty
470 * then check the TX Empty bit in the UART.
472 static int tx_active(struct edgeport_port *port)
475 struct out_endpoint_desc_block *oedb;
479 oedb = kmalloc(sizeof(*oedb), GFP_KERNEL);
481 dev_err(&port->port->dev, "%s - out of memory\n", __func__);
485 lsr = kmalloc(1, GFP_KERNEL); /* Sigh, that's right, just one byte,
486 as not all platforms can do DMA
492 /* Read the DMA Count Registers */
493 status = read_ram(port->port->serial->dev, port->dma_address,
494 sizeof(*oedb), (void *)oedb);
496 goto exit_is_tx_active;
498 dev_dbg(&port->port->dev, "%s - XByteCount 0x%X\n", __func__, oedb->XByteCount);
501 status = read_ram(port->port->serial->dev,
502 port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr);
505 goto exit_is_tx_active;
506 dev_dbg(&port->port->dev, "%s - LSR = 0x%X\n", __func__, *lsr);
508 /* If either buffer has data or we are transmitting then return TRUE */
509 if ((oedb->XByteCount & 0x80) != 0)
512 if ((*lsr & UMP_UART_LSR_TX_MASK) == 0)
515 /* We return Not Active if we get any kind of error */
517 dev_dbg(&port->port->dev, "%s - return %d\n", __func__, bytes_left);
524 static int choose_config(struct usb_device *dev)
527 * There may be multiple configurations on this device, in which case
528 * we would need to read and parse all of them to find out which one
529 * we want. However, we just support one config at this point,
530 * configuration # 1, which is Config Descriptor 0.
533 dev_dbg(&dev->dev, "%s - Number of Interfaces = %d\n",
534 __func__, dev->config->desc.bNumInterfaces);
535 dev_dbg(&dev->dev, "%s - MAX Power = %d\n",
536 __func__, dev->config->desc.bMaxPower * 2);
538 if (dev->config->desc.bNumInterfaces != 1) {
539 dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", __func__);
546 static int read_rom(struct edgeport_serial *serial,
547 int start_address, int length, __u8 *buffer)
551 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
552 status = read_download_mem(serial->serial->dev,
558 status = read_boot_mem(serial, start_address, length,
564 static int write_rom(struct edgeport_serial *serial, int start_address,
565 int length, __u8 *buffer)
567 if (serial->product_info.TiMode == TI_MODE_BOOT)
568 return write_boot_mem(serial, start_address, length,
571 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD)
572 return write_i2c_mem(serial, start_address, length,
573 serial->TI_I2C_Type, buffer);
579 /* Read a descriptor header from I2C based on type */
580 static int get_descriptor_addr(struct edgeport_serial *serial,
581 int desc_type, struct ti_i2c_desc *rom_desc)
586 /* Search for requested descriptor in I2C */
589 status = read_rom(serial,
591 sizeof(struct ti_i2c_desc),
596 if (rom_desc->Type == desc_type)
597 return start_address;
599 start_address = start_address + sizeof(struct ti_i2c_desc)
602 } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type);
607 /* Validate descriptor checksum */
608 static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer)
613 for (i = 0; i < rom_desc->Size; i++)
614 cs = (__u8)(cs + buffer[i]);
616 if (cs != rom_desc->CheckSum) {
617 pr_debug("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs);
623 /* Make sure that the I2C image is good */
624 static int check_i2c_image(struct edgeport_serial *serial)
626 struct device *dev = &serial->serial->dev->dev;
628 struct ti_i2c_desc *rom_desc;
629 int start_address = 2;
633 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
635 dev_err(dev, "%s - out of memory\n", __func__);
638 buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL);
640 dev_err(dev, "%s - out of memory when allocating buffer\n",
646 /* Read the first byte (Signature0) must be 0x52 or 0x10 */
647 status = read_rom(serial, 0, 1, buffer);
651 if (*buffer != UMP5152 && *buffer != UMP3410) {
652 dev_err(dev, "%s - invalid buffer signature\n", __func__);
658 /* Validate the I2C */
659 status = read_rom(serial,
661 sizeof(struct ti_i2c_desc),
666 if ((start_address + sizeof(struct ti_i2c_desc) +
667 rom_desc->Size) > TI_MAX_I2C_SIZE) {
669 dev_dbg(dev, "%s - structure too big, erroring out.\n", __func__);
673 dev_dbg(dev, "%s Type = 0x%x\n", __func__, rom_desc->Type);
675 /* Skip type 2 record */
676 ttype = rom_desc->Type & 0x0f;
677 if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC
678 && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) {
679 /* Read the descriptor data */
680 status = read_rom(serial, start_address +
681 sizeof(struct ti_i2c_desc),
682 rom_desc->Size, buffer);
686 status = valid_csum(rom_desc, buffer);
690 start_address = start_address + sizeof(struct ti_i2c_desc) +
693 } while ((rom_desc->Type != I2C_DESC_TYPE_ION) &&
694 (start_address < TI_MAX_I2C_SIZE));
696 if ((rom_desc->Type != I2C_DESC_TYPE_ION) ||
697 (start_address > TI_MAX_I2C_SIZE))
706 static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer)
710 struct ti_i2c_desc *rom_desc;
711 struct edge_ti_manuf_descriptor *desc;
712 struct device *dev = &serial->serial->dev->dev;
714 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
716 dev_err(dev, "%s - out of memory\n", __func__);
719 start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION,
722 if (!start_address) {
723 dev_dbg(dev, "%s - Edge Descriptor not found in I2C\n", __func__);
728 /* Read the descriptor data */
729 status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc),
730 rom_desc->Size, buffer);
734 status = valid_csum(rom_desc, buffer);
736 desc = (struct edge_ti_manuf_descriptor *)buffer;
737 dev_dbg(dev, "%s - IonConfig 0x%x\n", __func__, desc->IonConfig);
738 dev_dbg(dev, "%s - Version %d\n", __func__, desc->Version);
739 dev_dbg(dev, "%s - Cpu/Board 0x%x\n", __func__, desc->CpuRev_BoardRev);
740 dev_dbg(dev, "%s - NumPorts %d\n", __func__, desc->NumPorts);
741 dev_dbg(dev, "%s - NumVirtualPorts %d\n", __func__, desc->NumVirtualPorts);
742 dev_dbg(dev, "%s - TotalPorts %d\n", __func__, desc->TotalPorts);
749 /* Build firmware header used for firmware update */
750 static int build_i2c_fw_hdr(__u8 *header, struct device *dev)
757 struct ti_i2c_desc *i2c_header;
758 struct ti_i2c_image_header *img_header;
759 struct ti_i2c_firmware_rec *firmware_rec;
760 const struct firmware *fw;
761 const char *fw_name = "edgeport/down3.bin";
763 /* In order to update the I2C firmware we must change the type 2 record
764 * to type 0xF2. This will force the UMP to come up in Boot Mode.
765 * Then while in boot mode, the driver will download the latest
766 * firmware (padded to 15.5k) into the UMP ram. And finally when the
767 * device comes back up in download mode the driver will cause the new
768 * firmware to be copied from the UMP Ram to I2C and the firmware will
769 * update the record type from 0xf2 to 0x02.
772 /* Allocate a 15.5k buffer + 2 bytes for version number
773 * (Firmware Record) */
774 buffer_size = (((1024 * 16) - 512 ) +
775 sizeof(struct ti_i2c_firmware_rec));
777 buffer = kmalloc(buffer_size, GFP_KERNEL);
779 dev_err(dev, "%s - out of memory\n", __func__);
783 // Set entire image of 0xffs
784 memset(buffer, 0xff, buffer_size);
786 err = request_firmware(&fw, fw_name, dev);
788 dev_err(dev, "Failed to load image \"%s\" err %d\n",
794 /* Save Download Version Number */
795 OperationalMajorVersion = fw->data[0];
796 OperationalMinorVersion = fw->data[1];
797 OperationalBuildNumber = fw->data[2] | (fw->data[3] << 8);
799 /* Copy version number into firmware record */
800 firmware_rec = (struct ti_i2c_firmware_rec *)buffer;
802 firmware_rec->Ver_Major = OperationalMajorVersion;
803 firmware_rec->Ver_Minor = OperationalMinorVersion;
805 /* Pointer to fw_down memory image */
806 img_header = (struct ti_i2c_image_header *)&fw->data[4];
808 memcpy(buffer + sizeof(struct ti_i2c_firmware_rec),
809 &fw->data[4 + sizeof(struct ti_i2c_image_header)],
810 le16_to_cpu(img_header->Length));
812 release_firmware(fw);
814 for (i=0; i < buffer_size; i++) {
815 cs = (__u8)(cs + buffer[i]);
820 /* Build new header */
821 i2c_header = (struct ti_i2c_desc *)header;
822 firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data;
824 i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK;
825 i2c_header->Size = (__u16)buffer_size;
826 i2c_header->CheckSum = cs;
827 firmware_rec->Ver_Major = OperationalMajorVersion;
828 firmware_rec->Ver_Minor = OperationalMinorVersion;
833 /* Try to figure out what type of I2c we have */
834 static int i2c_type_bootmode(struct edgeport_serial *serial)
836 struct device *dev = &serial->serial->dev->dev;
840 data = kmalloc(1, GFP_KERNEL);
842 dev_err(dev, "%s - out of memory\n", __func__);
846 /* Try to read type 2 */
847 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
848 DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01);
850 dev_dbg(dev, "%s - read 2 status error = %d\n", __func__, status);
852 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data);
853 if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
854 dev_dbg(dev, "%s - ROM_TYPE_II\n", __func__);
855 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
859 /* Try to read type 3 */
860 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
861 DTK_ADDR_SPACE_I2C_TYPE_III, 0, data, 0x01);
863 dev_dbg(dev, "%s - read 3 status error = %d\n", __func__, status);
865 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data);
866 if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
867 dev_dbg(dev, "%s - ROM_TYPE_III\n", __func__);
868 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III;
872 dev_dbg(dev, "%s - Unknown\n", __func__);
873 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
880 static int bulk_xfer(struct usb_serial *serial, void *buffer,
881 int length, int *num_sent)
885 status = usb_bulk_msg(serial->dev,
886 usb_sndbulkpipe(serial->dev,
887 serial->port[0]->bulk_out_endpointAddress),
888 buffer, length, num_sent, 1000);
892 /* Download given firmware image to the device (IN BOOT MODE) */
893 static int download_code(struct edgeport_serial *serial, __u8 *image,
901 /* Transfer firmware image */
902 for (pos = 0; pos < image_length; ) {
903 /* Read the next buffer from file */
904 transfer = image_length - pos;
905 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE)
906 transfer = EDGE_FW_BULK_MAX_PACKET_SIZE;
909 status = bulk_xfer(serial->serial, &image[pos],
913 /* Advance buffer pointer */
921 static int config_boot_dev(struct usb_device *dev)
926 static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc)
928 return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev);
932 * DownloadTIFirmware - Download run-time operating firmware to the TI5052
934 * This routine downloads the main operating code into the TI5052, using the
935 * boot code already burned into E2PROM or ROM.
937 static int download_fw(struct edgeport_serial *serial)
939 struct device *dev = &serial->serial->dev->dev;
942 struct edge_ti_manuf_descriptor *ti_manuf_desc;
943 struct usb_interface_descriptor *interface;
944 int download_cur_ver;
945 int download_new_ver;
947 /* This routine is entered by both the BOOT mode and the Download mode
948 * We can determine which code is running by the reading the config
949 * descriptor and if we have only one bulk pipe it is in boot mode
951 serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP;
953 /* Default to type 2 i2c */
954 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
956 status = choose_config(serial->serial->dev);
960 interface = &serial->serial->interface->cur_altsetting->desc;
962 dev_err(dev, "%s - no interface set, error!\n", __func__);
967 * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING
968 * if we have more than one endpoint we are definitely in download
971 if (interface->bNumEndpoints > 1)
972 serial->product_info.TiMode = TI_MODE_DOWNLOAD;
974 /* Otherwise we will remain in configuring mode */
975 serial->product_info.TiMode = TI_MODE_CONFIGURING;
977 /********************************************************************/
979 /********************************************************************/
980 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
981 struct ti_i2c_desc *rom_desc;
983 dev_dbg(dev, "%s - RUNNING IN DOWNLOAD MODE\n", __func__);
985 status = check_i2c_image(serial);
987 dev_dbg(dev, "%s - DOWNLOAD MODE -- BAD I2C\n", __func__);
991 /* Validate Hardware version number
992 * Read Manufacturing Descriptor from TI Based Edgeport
994 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
995 if (!ti_manuf_desc) {
996 dev_err(dev, "%s - out of memory.\n", __func__);
999 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
1001 kfree(ti_manuf_desc);
1005 /* Check version number of ION descriptor */
1006 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
1007 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n",
1008 __func__, ti_cpu_rev(ti_manuf_desc));
1009 kfree(ti_manuf_desc);
1013 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
1015 dev_err(dev, "%s - out of memory.\n", __func__);
1016 kfree(ti_manuf_desc);
1020 /* Search for type 2 record (firmware record) */
1021 start_address = get_descriptor_addr(serial,
1022 I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc);
1023 if (start_address != 0) {
1024 struct ti_i2c_firmware_rec *firmware_version;
1027 dev_dbg(dev, "%s - Found Type FIRMWARE (Type 2) record\n", __func__);
1029 firmware_version = kmalloc(sizeof(*firmware_version),
1031 if (!firmware_version) {
1032 dev_err(dev, "%s - out of memory.\n", __func__);
1034 kfree(ti_manuf_desc);
1038 /* Validate version number
1039 * Read the descriptor data
1041 status = read_rom(serial, start_address +
1042 sizeof(struct ti_i2c_desc),
1043 sizeof(struct ti_i2c_firmware_rec),
1044 (__u8 *)firmware_version);
1046 kfree(firmware_version);
1048 kfree(ti_manuf_desc);
1052 /* Check version number of download with current
1054 download_cur_ver = (firmware_version->Ver_Major << 8) +
1055 (firmware_version->Ver_Minor);
1056 download_new_ver = (OperationalMajorVersion << 8) +
1057 (OperationalMinorVersion);
1059 dev_dbg(dev, "%s - >> FW Versions Device %d.%d Driver %d.%d\n",
1060 __func__, firmware_version->Ver_Major,
1061 firmware_version->Ver_Minor,
1062 OperationalMajorVersion,
1063 OperationalMinorVersion);
1065 /* Check if we have an old version in the I2C and
1066 update if necessary */
1067 if (download_cur_ver < download_new_ver) {
1068 dev_dbg(dev, "%s - Update I2C dld from %d.%d to %d.%d\n",
1070 firmware_version->Ver_Major,
1071 firmware_version->Ver_Minor,
1072 OperationalMajorVersion,
1073 OperationalMinorVersion);
1075 record = kmalloc(1, GFP_KERNEL);
1077 dev_err(dev, "%s - out of memory.\n",
1079 kfree(firmware_version);
1081 kfree(ti_manuf_desc);
1084 /* In order to update the I2C firmware we must
1085 * change the type 2 record to type 0xF2. This
1086 * will force the UMP to come up in Boot Mode.
1087 * Then while in boot mode, the driver will
1088 * download the latest firmware (padded to
1089 * 15.5k) into the UMP ram. Finally when the
1090 * device comes back up in download mode the
1091 * driver will cause the new firmware to be
1092 * copied from the UMP Ram to I2C and the
1093 * firmware will update the record type from
1096 *record = I2C_DESC_TYPE_FIRMWARE_BLANK;
1098 /* Change the I2C Firmware record type to
1099 0xf2 to trigger an update */
1100 status = write_rom(serial, start_address,
1101 sizeof(*record), record);
1104 kfree(firmware_version);
1106 kfree(ti_manuf_desc);
1110 /* verify the write -- must do this in order
1111 * for write to complete before we do the
1114 status = read_rom(serial,
1120 kfree(firmware_version);
1122 kfree(ti_manuf_desc);
1126 if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) {
1127 dev_err(dev, "%s - error resetting device\n", __func__);
1129 kfree(firmware_version);
1131 kfree(ti_manuf_desc);
1135 dev_dbg(dev, "%s - HARDWARE RESET\n", __func__);
1137 /* Reset UMP -- Back to BOOT MODE */
1138 status = ti_vsend_sync(serial->serial->dev,
1139 UMPC_HARDWARE_RESET,
1142 dev_dbg(dev, "%s - HARDWARE RESET return %d\n", __func__, status);
1144 /* return an error on purpose. */
1146 kfree(firmware_version);
1148 kfree(ti_manuf_desc);
1151 kfree(firmware_version);
1153 /* Search for type 0xF2 record (firmware blank record) */
1154 else if ((start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) {
1155 #define HEADER_SIZE (sizeof(struct ti_i2c_desc) + \
1156 sizeof(struct ti_i2c_firmware_rec))
1160 header = kmalloc(HEADER_SIZE, GFP_KERNEL);
1162 dev_err(dev, "%s - out of memory.\n", __func__);
1164 kfree(ti_manuf_desc);
1168 vheader = kmalloc(HEADER_SIZE, GFP_KERNEL);
1170 dev_err(dev, "%s - out of memory.\n", __func__);
1173 kfree(ti_manuf_desc);
1177 dev_dbg(dev, "%s - Found Type BLANK FIRMWARE (Type F2) record\n", __func__);
1180 * In order to update the I2C firmware we must change
1181 * the type 2 record to type 0xF2. This will force the
1182 * UMP to come up in Boot Mode. Then while in boot
1183 * mode, the driver will download the latest firmware
1184 * (padded to 15.5k) into the UMP ram. Finally when the
1185 * device comes back up in download mode the driver
1186 * will cause the new firmware to be copied from the
1187 * UMP Ram to I2C and the firmware will update the
1188 * record type from 0xf2 to 0x02.
1190 status = build_i2c_fw_hdr(header, dev);
1195 kfree(ti_manuf_desc);
1199 /* Update I2C with type 0xf2 record with correct
1200 size and checksum */
1201 status = write_rom(serial,
1209 kfree(ti_manuf_desc);
1213 /* verify the write -- must do this in order for
1214 write to complete before we do the hardware reset */
1215 status = read_rom(serial, start_address,
1216 HEADER_SIZE, vheader);
1219 dev_dbg(dev, "%s - can't read header back\n", __func__);
1223 kfree(ti_manuf_desc);
1226 if (memcmp(vheader, header, HEADER_SIZE)) {
1227 dev_dbg(dev, "%s - write download record failed\n", __func__);
1231 kfree(ti_manuf_desc);
1238 dev_dbg(dev, "%s - Start firmware update\n", __func__);
1240 /* Tell firmware to copy download image into I2C */
1241 status = ti_vsend_sync(serial->serial->dev,
1242 UMPC_COPY_DNLD_TO_I2C, 0, 0, NULL, 0);
1244 dev_dbg(dev, "%s - Update complete 0x%x\n", __func__, status);
1247 "%s - UMPC_COPY_DNLD_TO_I2C failed\n",
1250 kfree(ti_manuf_desc);
1255 // The device is running the download code
1257 kfree(ti_manuf_desc);
1261 /********************************************************************/
1263 /********************************************************************/
1264 dev_dbg(dev, "%s - RUNNING IN BOOT MODE\n", __func__);
1266 /* Configure the TI device so we can use the BULK pipes for download */
1267 status = config_boot_dev(serial->serial->dev);
1271 if (le16_to_cpu(serial->serial->dev->descriptor.idVendor)
1272 != USB_VENDOR_ID_ION) {
1273 dev_dbg(dev, "%s - VID = 0x%x\n", __func__,
1274 le16_to_cpu(serial->serial->dev->descriptor.idVendor));
1275 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1276 goto stayinbootmode;
1279 /* We have an ION device (I2c Must be programmed)
1280 Determine I2C image type */
1281 if (i2c_type_bootmode(serial))
1282 goto stayinbootmode;
1284 /* Check for ION Vendor ID and that the I2C is valid */
1285 if (!check_i2c_image(serial)) {
1286 struct ti_i2c_image_header *header;
1292 const struct firmware *fw;
1293 const char *fw_name = "edgeport/down3.bin";
1295 /* Validate Hardware version number
1296 * Read Manufacturing Descriptor from TI Based Edgeport
1298 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
1299 if (!ti_manuf_desc) {
1300 dev_err(dev, "%s - out of memory.\n", __func__);
1303 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
1305 kfree(ti_manuf_desc);
1306 goto stayinbootmode;
1309 /* Check for version 2 */
1310 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
1311 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n",
1312 __func__, ti_cpu_rev(ti_manuf_desc));
1313 kfree(ti_manuf_desc);
1314 goto stayinbootmode;
1317 kfree(ti_manuf_desc);
1320 * In order to update the I2C firmware we must change the type
1321 * 2 record to type 0xF2. This will force the UMP to come up
1322 * in Boot Mode. Then while in boot mode, the driver will
1323 * download the latest firmware (padded to 15.5k) into the
1324 * UMP ram. Finally when the device comes back up in download
1325 * mode the driver will cause the new firmware to be copied
1326 * from the UMP Ram to I2C and the firmware will update the
1327 * record type from 0xf2 to 0x02.
1329 * Do we really have to copy the whole firmware image,
1330 * or could we do this in place!
1333 /* Allocate a 15.5k buffer + 3 byte header */
1334 buffer_size = (((1024 * 16) - 512) +
1335 sizeof(struct ti_i2c_image_header));
1336 buffer = kmalloc(buffer_size, GFP_KERNEL);
1338 dev_err(dev, "%s - out of memory\n", __func__);
1342 /* Initialize the buffer to 0xff (pad the buffer) */
1343 memset(buffer, 0xff, buffer_size);
1345 err = request_firmware(&fw, fw_name, dev);
1347 dev_err(dev, "Failed to load image \"%s\" err %d\n",
1352 memcpy(buffer, &fw->data[4], fw->size - 4);
1353 release_firmware(fw);
1355 for (i = sizeof(struct ti_i2c_image_header);
1356 i < buffer_size; i++) {
1357 cs = (__u8)(cs + buffer[i]);
1360 header = (struct ti_i2c_image_header *)buffer;
1362 /* update length and checksum after padding */
1363 header->Length = cpu_to_le16((__u16)(buffer_size -
1364 sizeof(struct ti_i2c_image_header)));
1365 header->CheckSum = cs;
1367 /* Download the operational code */
1368 dev_dbg(dev, "%s - Downloading operational code image (TI UMP)\n", __func__);
1369 status = download_code(serial, buffer, buffer_size);
1374 dev_dbg(dev, "%s - Error downloading operational code image\n", __func__);
1378 /* Device will reboot */
1379 serial->product_info.TiMode = TI_MODE_TRANSITIONING;
1381 dev_dbg(dev, "%s - Download successful -- Device rebooting...\n", __func__);
1383 /* return an error on purpose */
1388 /* Eprom is invalid or blank stay in boot mode */
1389 dev_dbg(dev, "%s - STAYING IN BOOT MODE\n", __func__);
1390 serial->product_info.TiMode = TI_MODE_BOOT;
1396 static int ti_do_config(struct edgeport_port *port, int feature, int on)
1398 int port_number = port->port->number - port->port->serial->minor;
1399 on = !!on; /* 1 or 0 not bitmask */
1400 return send_cmd(port->port->serial->dev,
1401 feature, (__u8)(UMPM_UART1_PORT + port_number),
1406 static int restore_mcr(struct edgeport_port *port, __u8 mcr)
1410 dev_dbg(&port->port->dev, "%s - %x\n", __func__, mcr);
1412 status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR);
1415 status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS);
1418 return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK);
1421 /* Convert TI LSR to standard UART flags */
1422 static __u8 map_line_status(__u8 ti_lsr)
1426 #define MAP_FLAG(flagUmp, flagUart) \
1427 if (ti_lsr & flagUmp) \
1430 MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */
1431 MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */
1432 MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */
1433 MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */
1434 MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* rx data available */
1435 MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* tx hold reg empty */
1442 static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr)
1444 struct async_icount *icount;
1445 struct tty_struct *tty;
1447 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, msr);
1449 if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR |
1450 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
1451 icount = &edge_port->icount;
1453 /* update input line counters */
1454 if (msr & EDGEPORT_MSR_DELTA_CTS)
1456 if (msr & EDGEPORT_MSR_DELTA_DSR)
1458 if (msr & EDGEPORT_MSR_DELTA_CD)
1460 if (msr & EDGEPORT_MSR_DELTA_RI)
1462 wake_up_interruptible(&edge_port->delta_msr_wait);
1465 /* Save the new modem status */
1466 edge_port->shadow_msr = msr & 0xf0;
1468 tty = tty_port_tty_get(&edge_port->port->port);
1469 /* handle CTS flow control */
1470 if (tty && C_CRTSCTS(tty)) {
1471 if (msr & EDGEPORT_MSR_CTS) {
1472 tty->hw_stopped = 0;
1475 tty->hw_stopped = 1;
1481 static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data,
1482 __u8 lsr, __u8 data)
1484 struct async_icount *icount;
1485 __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR |
1486 LSR_FRM_ERR | LSR_BREAK));
1488 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, new_lsr);
1490 edge_port->shadow_lsr = lsr;
1492 if (new_lsr & LSR_BREAK)
1494 * Parity and Framing errors only count if they
1495 * occur exclusive of a break being received.
1497 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
1499 /* Place LSR data byte into Rx buffer */
1501 edge_tty_recv(edge_port->port, &data, 1);
1503 /* update input line counters */
1504 icount = &edge_port->icount;
1505 if (new_lsr & LSR_BREAK)
1507 if (new_lsr & LSR_OVER_ERR)
1509 if (new_lsr & LSR_PAR_ERR)
1511 if (new_lsr & LSR_FRM_ERR)
1516 static void edge_interrupt_callback(struct urb *urb)
1518 struct edgeport_serial *edge_serial = urb->context;
1519 struct usb_serial_port *port;
1520 struct edgeport_port *edge_port;
1522 unsigned char *data = urb->transfer_buffer;
1523 int length = urb->actual_length;
1529 int status = urb->status;
1538 /* this urb is terminated, clean up */
1539 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n",
1543 dev_err(&urb->dev->dev, "%s - nonzero urb status received: "
1544 "%d\n", __func__, status);
1549 dev_dbg(&urb->dev->dev, "%s - no data in urb\n", __func__);
1553 dev = &edge_serial->serial->dev->dev;
1554 usb_serial_debug_data(dev, __func__, length, data);
1557 dev_dbg(dev, "%s - expecting packet of size 2, got %d\n", __func__, length);
1561 port_number = TIUMP_GET_PORT_FROM_CODE(data[0]);
1562 function = TIUMP_GET_FUNC_FROM_CODE(data[0]);
1563 dev_dbg(dev, "%s - port_number %d, function %d, info 0x%x\n", __func__,
1564 port_number, function, data[1]);
1565 port = edge_serial->serial->port[port_number];
1566 edge_port = usb_get_serial_port_data(port);
1568 dev_dbg(dev, "%s - edge_port not found\n", __func__);
1572 case TIUMP_INTERRUPT_CODE_LSR:
1573 lsr = map_line_status(data[1]);
1574 if (lsr & UMP_UART_LSR_DATA_MASK) {
1575 /* Save the LSR event for bulk read
1576 completion routine */
1577 dev_dbg(dev, "%s - LSR Event Port %u LSR Status = %02x\n",
1578 __func__, port_number, lsr);
1579 edge_port->lsr_event = 1;
1580 edge_port->lsr_mask = lsr;
1582 dev_dbg(dev, "%s - ===== Port %d LSR Status = %02x ======\n",
1583 __func__, port_number, lsr);
1584 handle_new_lsr(edge_port, 0, lsr, 0);
1588 case TIUMP_INTERRUPT_CODE_MSR: /* MSR */
1589 /* Copy MSR from UMP */
1591 dev_dbg(dev, "%s - ===== Port %u MSR Status = %02x ======\n",
1592 __func__, port_number, msr);
1593 handle_new_msr(edge_port, msr);
1597 dev_err(&urb->dev->dev,
1598 "%s - Unknown Interrupt code from UMP %x\n",
1605 retval = usb_submit_urb(urb, GFP_ATOMIC);
1607 dev_err(&urb->dev->dev,
1608 "%s - usb_submit_urb failed with result %d\n",
1612 static void edge_bulk_in_callback(struct urb *urb)
1614 struct edgeport_port *edge_port = urb->context;
1615 struct device *dev = &edge_port->port->dev;
1616 unsigned char *data = urb->transfer_buffer;
1619 int status = urb->status;
1628 /* this urb is terminated, clean up */
1629 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status);
1632 dev_err(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", __func__, status);
1635 if (status == -EPIPE)
1639 dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__);
1643 port_number = edge_port->port->number - edge_port->port->serial->minor;
1645 if (edge_port->lsr_event) {
1646 edge_port->lsr_event = 0;
1647 dev_dbg(dev, "%s ===== Port %u LSR Status = %02x, Data = %02x ======\n",
1648 __func__, port_number, edge_port->lsr_mask, *data);
1649 handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data);
1650 /* Adjust buffer length/pointer */
1651 --urb->actual_length;
1655 if (urb->actual_length) {
1656 usb_serial_debug_data(dev, __func__, urb->actual_length, data);
1657 if (edge_port->close_pending)
1658 dev_dbg(dev, "%s - close pending, dropping data on the floor\n",
1661 edge_tty_recv(edge_port->port, data,
1662 urb->actual_length);
1663 edge_port->icount.rx += urb->actual_length;
1667 /* continue read unless stopped */
1668 spin_lock(&edge_port->ep_lock);
1669 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
1670 retval = usb_submit_urb(urb, GFP_ATOMIC);
1671 else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING)
1672 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED;
1674 spin_unlock(&edge_port->ep_lock);
1676 dev_err(dev, "%s - usb_submit_urb failed with result %d\n", __func__, retval);
1679 static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
1684 queued = tty_insert_flip_string(&port->port, data, length);
1685 if (queued < length)
1686 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n",
1687 __func__, length - queued);
1688 tty_flip_buffer_push(&port->port);
1691 static void edge_bulk_out_callback(struct urb *urb)
1693 struct usb_serial_port *port = urb->context;
1694 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1695 int status = urb->status;
1696 struct tty_struct *tty;
1698 edge_port->ep_write_urb_in_use = 0;
1707 /* this urb is terminated, clean up */
1708 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n",
1712 dev_err_console(port, "%s - nonzero write bulk status "
1713 "received: %d\n", __func__, status);
1716 /* send any buffered data */
1717 tty = tty_port_tty_get(&port->port);
1722 static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
1724 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1725 struct edgeport_serial *edge_serial;
1726 struct usb_device *dev;
1731 u8 transaction_timeout;
1733 if (edge_port == NULL)
1736 port_number = port->number - port->serial->minor;
1737 switch (port_number) {
1739 edge_port->uart_base = UMPMEM_BASE_UART1;
1740 edge_port->dma_address = UMPD_OEDB1_ADDRESS;
1743 edge_port->uart_base = UMPMEM_BASE_UART2;
1744 edge_port->dma_address = UMPD_OEDB2_ADDRESS;
1747 dev_err(&port->dev, "Unknown port number!!!\n");
1751 dev_dbg(&port->dev, "%s - port_number = %d, uart_base = %04x, dma_address = %04x\n",
1752 __func__, port_number, edge_port->uart_base, edge_port->dma_address);
1754 dev = port->serial->dev;
1756 memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount));
1757 init_waitqueue_head(&edge_port->delta_msr_wait);
1759 /* turn off loopback */
1760 status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0);
1763 "%s - cannot send clear loopback command, %d\n",
1768 /* set up the port settings */
1770 edge_set_termios(tty, port, &tty->termios);
1772 /* open up the port */
1774 /* milliseconds to timeout for DMA transfer */
1775 transaction_timeout = 2;
1777 edge_port->ump_read_timeout =
1778 max(20, ((transaction_timeout * 3) / 2));
1780 /* milliseconds to timeout for DMA transfer */
1781 open_settings = (u8)(UMP_DMA_MODE_CONTINOUS |
1782 UMP_PIPE_TRANS_TIMEOUT_ENA |
1783 (transaction_timeout << 2));
1785 dev_dbg(&port->dev, "%s - Sending UMPC_OPEN_PORT\n", __func__);
1787 /* Tell TI to open and start the port */
1788 status = send_cmd(dev, UMPC_OPEN_PORT,
1789 (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0);
1791 dev_err(&port->dev, "%s - cannot send open command, %d\n",
1796 /* Start the DMA? */
1797 status = send_cmd(dev, UMPC_START_PORT,
1798 (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0);
1800 dev_err(&port->dev, "%s - cannot send start DMA command, %d\n",
1805 /* Clear TX and RX buffers in UMP */
1806 status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN);
1809 "%s - cannot send clear buffers command, %d\n",
1814 /* Read Initial MSR */
1815 status = ti_vread_sync(dev, UMPC_READ_MSR, 0,
1816 (__u16)(UMPM_UART1_PORT + port_number),
1817 &edge_port->shadow_msr, 1);
1819 dev_err(&port->dev, "%s - cannot send read MSR command, %d\n",
1824 dev_dbg(&port->dev, "ShadowMSR 0x%X\n", edge_port->shadow_msr);
1826 /* Set Initial MCR */
1827 edge_port->shadow_mcr = MCR_RTS | MCR_DTR;
1828 dev_dbg(&port->dev, "ShadowMCR 0x%X\n", edge_port->shadow_mcr);
1830 edge_serial = edge_port->edge_serial;
1831 if (mutex_lock_interruptible(&edge_serial->es_lock))
1832 return -ERESTARTSYS;
1833 if (edge_serial->num_ports_open == 0) {
1834 /* we are the first port to open, post the interrupt urb */
1835 urb = edge_serial->serial->port[0]->interrupt_in_urb;
1838 "%s - no interrupt urb present, exiting\n",
1841 goto release_es_lock;
1843 urb->context = edge_serial;
1844 status = usb_submit_urb(urb, GFP_KERNEL);
1847 "%s - usb_submit_urb failed with value %d\n",
1849 goto release_es_lock;
1854 * reset the data toggle on the bulk endpoints to work around bug in
1855 * host controllers where things get out of sync some times
1857 usb_clear_halt(dev, port->write_urb->pipe);
1858 usb_clear_halt(dev, port->read_urb->pipe);
1860 /* start up our bulk read urb */
1861 urb = port->read_urb;
1863 dev_err(&port->dev, "%s - no read urb present, exiting\n",
1866 goto unlink_int_urb;
1868 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
1869 urb->context = edge_port;
1870 status = usb_submit_urb(urb, GFP_KERNEL);
1873 "%s - read bulk usb_submit_urb failed with value %d\n",
1875 goto unlink_int_urb;
1878 ++edge_serial->num_ports_open;
1880 port->port.drain_delay = 1;
1882 goto release_es_lock;
1885 if (edge_port->edge_serial->num_ports_open == 0)
1886 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
1888 mutex_unlock(&edge_serial->es_lock);
1892 static void edge_close(struct usb_serial_port *port)
1894 struct edgeport_serial *edge_serial;
1895 struct edgeport_port *edge_port;
1896 struct usb_serial *serial = port->serial;
1897 unsigned long flags;
1900 edge_serial = usb_get_serial_data(port->serial);
1901 edge_port = usb_get_serial_port_data(port);
1902 if (edge_serial == NULL || edge_port == NULL)
1905 /* The bulkreadcompletion routine will check
1906 * this flag and dump add read data */
1907 edge_port->close_pending = 1;
1909 usb_kill_urb(port->read_urb);
1910 usb_kill_urb(port->write_urb);
1911 edge_port->ep_write_urb_in_use = 0;
1912 spin_lock_irqsave(&edge_port->ep_lock, flags);
1913 kfifo_reset_out(&edge_port->write_fifo);
1914 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1916 /* assuming we can still talk to the device,
1917 * send a close port command to it */
1918 dev_dbg(&port->dev, "%s - send umpc_close_port\n", __func__);
1919 port_number = port->number - port->serial->minor;
1921 mutex_lock(&serial->disc_mutex);
1922 if (!serial->disconnected) {
1923 send_cmd(serial->dev,
1925 (__u8)(UMPM_UART1_PORT + port_number),
1930 mutex_unlock(&serial->disc_mutex);
1932 mutex_lock(&edge_serial->es_lock);
1933 --edge_port->edge_serial->num_ports_open;
1934 if (edge_port->edge_serial->num_ports_open <= 0) {
1935 /* last port is now closed, let's shut down our interrupt urb */
1936 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
1937 edge_port->edge_serial->num_ports_open = 0;
1939 mutex_unlock(&edge_serial->es_lock);
1940 edge_port->close_pending = 0;
1943 static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
1944 const unsigned char *data, int count)
1946 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1949 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__);
1953 if (edge_port == NULL)
1955 if (edge_port->close_pending == 1)
1958 count = kfifo_in_locked(&edge_port->write_fifo, data, count,
1959 &edge_port->ep_lock);
1965 static void edge_send(struct tty_struct *tty)
1967 struct usb_serial_port *port = tty->driver_data;
1969 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1970 unsigned long flags;
1972 spin_lock_irqsave(&edge_port->ep_lock, flags);
1974 if (edge_port->ep_write_urb_in_use) {
1975 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1979 count = kfifo_out(&edge_port->write_fifo,
1980 port->write_urb->transfer_buffer,
1981 port->bulk_out_size);
1984 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1988 edge_port->ep_write_urb_in_use = 1;
1990 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1992 usb_serial_debug_data(&port->dev, __func__, count, port->write_urb->transfer_buffer);
1994 /* set up our urb */
1995 port->write_urb->transfer_buffer_length = count;
1997 /* send the data out the bulk port */
1998 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
2000 dev_err_console(port,
2001 "%s - failed submitting write urb, error %d\n",
2003 edge_port->ep_write_urb_in_use = 0;
2004 /* TODO: reschedule edge_send */
2006 edge_port->icount.tx += count;
2008 /* wakeup any process waiting for writes to complete */
2009 /* there is now more room in the buffer for new writes */
2014 static int edge_write_room(struct tty_struct *tty)
2016 struct usb_serial_port *port = tty->driver_data;
2017 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2019 unsigned long flags;
2021 if (edge_port == NULL)
2023 if (edge_port->close_pending == 1)
2026 spin_lock_irqsave(&edge_port->ep_lock, flags);
2027 room = kfifo_avail(&edge_port->write_fifo);
2028 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2030 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room);
2034 static int edge_chars_in_buffer(struct tty_struct *tty)
2036 struct usb_serial_port *port = tty->driver_data;
2037 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2039 unsigned long flags;
2042 if (edge_port == NULL)
2045 spin_lock_irqsave(&edge_port->ep_lock, flags);
2046 chars = kfifo_len(&edge_port->write_fifo);
2047 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2050 ret = tx_active(edge_port);
2055 dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars);
2059 static void edge_throttle(struct tty_struct *tty)
2061 struct usb_serial_port *port = tty->driver_data;
2062 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2065 if (edge_port == NULL)
2068 /* if we are implementing XON/XOFF, send the stop character */
2070 unsigned char stop_char = STOP_CHAR(tty);
2071 status = edge_write(tty, port, &stop_char, 1);
2073 dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status);
2077 /* if we are implementing RTS/CTS, stop reads */
2078 /* and the Edgeport will clear the RTS line */
2080 stop_read(edge_port);
2084 static void edge_unthrottle(struct tty_struct *tty)
2086 struct usb_serial_port *port = tty->driver_data;
2087 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2090 if (edge_port == NULL)
2093 /* if we are implementing XON/XOFF, send the start character */
2095 unsigned char start_char = START_CHAR(tty);
2096 status = edge_write(tty, port, &start_char, 1);
2098 dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status);
2101 /* if we are implementing RTS/CTS, restart reads */
2102 /* are the Edgeport will assert the RTS line */
2103 if (C_CRTSCTS(tty)) {
2104 status = restart_read(edge_port);
2107 "%s - read bulk usb_submit_urb failed: %d\n",
2113 static void stop_read(struct edgeport_port *edge_port)
2115 unsigned long flags;
2117 spin_lock_irqsave(&edge_port->ep_lock, flags);
2119 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
2120 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING;
2121 edge_port->shadow_mcr &= ~MCR_RTS;
2123 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2126 static int restart_read(struct edgeport_port *edge_port)
2130 unsigned long flags;
2132 spin_lock_irqsave(&edge_port->ep_lock, flags);
2134 if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) {
2135 urb = edge_port->port->read_urb;
2136 status = usb_submit_urb(urb, GFP_ATOMIC);
2138 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
2139 edge_port->shadow_mcr |= MCR_RTS;
2141 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2146 static void change_port_settings(struct tty_struct *tty,
2147 struct edgeport_port *edge_port, struct ktermios *old_termios)
2149 struct device *dev = &edge_port->port->dev;
2150 struct ump_uart_config *config;
2154 int port_number = edge_port->port->number -
2155 edge_port->port->serial->minor;
2157 dev_dbg(dev, "%s - port %d\n", __func__, edge_port->port->number);
2159 config = kmalloc (sizeof (*config), GFP_KERNEL);
2161 tty->termios = *old_termios;
2162 dev_err(dev, "%s - out of memory\n", __func__);
2166 cflag = tty->termios.c_cflag;
2170 /* These flags must be set */
2171 config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT;
2172 config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR;
2173 config->bUartMode = (__u8)(edge_port->bUartMode);
2175 switch (cflag & CSIZE) {
2177 config->bDataBits = UMP_UART_CHAR5BITS;
2178 dev_dbg(dev, "%s - data bits = 5\n", __func__);
2181 config->bDataBits = UMP_UART_CHAR6BITS;
2182 dev_dbg(dev, "%s - data bits = 6\n", __func__);
2185 config->bDataBits = UMP_UART_CHAR7BITS;
2186 dev_dbg(dev, "%s - data bits = 7\n", __func__);
2190 config->bDataBits = UMP_UART_CHAR8BITS;
2191 dev_dbg(dev, "%s - data bits = 8\n", __func__);
2195 if (cflag & PARENB) {
2196 if (cflag & PARODD) {
2197 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2198 config->bParity = UMP_UART_ODDPARITY;
2199 dev_dbg(dev, "%s - parity = odd\n", __func__);
2201 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2202 config->bParity = UMP_UART_EVENPARITY;
2203 dev_dbg(dev, "%s - parity = even\n", __func__);
2206 config->bParity = UMP_UART_NOPARITY;
2207 dev_dbg(dev, "%s - parity = none\n", __func__);
2210 if (cflag & CSTOPB) {
2211 config->bStopBits = UMP_UART_STOPBIT2;
2212 dev_dbg(dev, "%s - stop bits = 2\n", __func__);
2214 config->bStopBits = UMP_UART_STOPBIT1;
2215 dev_dbg(dev, "%s - stop bits = 1\n", __func__);
2218 /* figure out the flow control settings */
2219 if (cflag & CRTSCTS) {
2220 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW;
2221 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW;
2222 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__);
2224 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__);
2225 tty->hw_stopped = 0;
2226 restart_read(edge_port);
2229 /* if we are implementing XON/XOFF, set the start and stop
2230 character in the device */
2231 config->cXon = START_CHAR(tty);
2232 config->cXoff = STOP_CHAR(tty);
2234 /* if we are implementing INBOUND XON/XOFF */
2236 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X;
2237 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2238 __func__, config->cXon, config->cXoff);
2240 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__);
2242 /* if we are implementing OUTBOUND XON/XOFF */
2244 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X;
2245 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2246 __func__, config->cXon, config->cXoff);
2248 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__);
2250 tty->termios.c_cflag &= ~CMSPAR;
2252 /* Round the baud rate */
2253 baud = tty_get_baud_rate(tty);
2255 /* pick a default, any default... */
2258 tty_encode_baud_rate(tty, baud, baud);
2260 edge_port->baud_rate = baud;
2261 config->wBaudRate = (__u16)((461550L + baud/2) / baud);
2263 /* FIXME: Recompute actual baud from divisor here */
2265 dev_dbg(dev, "%s - baud rate = %d, wBaudRate = %d\n", __func__, baud, config->wBaudRate);
2267 dev_dbg(dev, "wBaudRate: %d\n", (int)(461550L / config->wBaudRate));
2268 dev_dbg(dev, "wFlags: 0x%x\n", config->wFlags);
2269 dev_dbg(dev, "bDataBits: %d\n", config->bDataBits);
2270 dev_dbg(dev, "bParity: %d\n", config->bParity);
2271 dev_dbg(dev, "bStopBits: %d\n", config->bStopBits);
2272 dev_dbg(dev, "cXon: %d\n", config->cXon);
2273 dev_dbg(dev, "cXoff: %d\n", config->cXoff);
2274 dev_dbg(dev, "bUartMode: %d\n", config->bUartMode);
2276 /* move the word values into big endian mode */
2277 cpu_to_be16s(&config->wFlags);
2278 cpu_to_be16s(&config->wBaudRate);
2280 status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG,
2281 (__u8)(UMPM_UART1_PORT + port_number),
2282 0, (__u8 *)config, sizeof(*config));
2284 dev_dbg(dev, "%s - error %d when trying to write config to device\n",
2289 static void edge_set_termios(struct tty_struct *tty,
2290 struct usb_serial_port *port, struct ktermios *old_termios)
2292 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2295 cflag = tty->termios.c_cflag;
2297 dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__,
2298 tty->termios.c_cflag, tty->termios.c_iflag);
2299 dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__,
2300 old_termios->c_cflag, old_termios->c_iflag);
2301 dev_dbg(&port->dev, "%s - port %d\n", __func__, port->number);
2303 if (edge_port == NULL)
2305 /* change the port settings to the new ones specified */
2306 change_port_settings(tty, edge_port, old_termios);
2309 static int edge_tiocmset(struct tty_struct *tty,
2310 unsigned int set, unsigned int clear)
2312 struct usb_serial_port *port = tty->driver_data;
2313 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2315 unsigned long flags;
2317 spin_lock_irqsave(&edge_port->ep_lock, flags);
2318 mcr = edge_port->shadow_mcr;
2319 if (set & TIOCM_RTS)
2321 if (set & TIOCM_DTR)
2323 if (set & TIOCM_LOOP)
2324 mcr |= MCR_LOOPBACK;
2326 if (clear & TIOCM_RTS)
2328 if (clear & TIOCM_DTR)
2330 if (clear & TIOCM_LOOP)
2331 mcr &= ~MCR_LOOPBACK;
2333 edge_port->shadow_mcr = mcr;
2334 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2336 restore_mcr(edge_port, mcr);
2340 static int edge_tiocmget(struct tty_struct *tty)
2342 struct usb_serial_port *port = tty->driver_data;
2343 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2344 unsigned int result = 0;
2347 unsigned long flags;
2349 spin_lock_irqsave(&edge_port->ep_lock, flags);
2351 msr = edge_port->shadow_msr;
2352 mcr = edge_port->shadow_mcr;
2353 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */
2354 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */
2355 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */
2356 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */
2357 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */
2358 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */
2361 dev_dbg(&port->dev, "%s -- %x\n", __func__, result);
2362 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2367 static int edge_get_icount(struct tty_struct *tty,
2368 struct serial_icounter_struct *icount)
2370 struct usb_serial_port *port = tty->driver_data;
2371 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2372 struct async_icount *ic = &edge_port->icount;
2374 icount->cts = ic->cts;
2375 icount->dsr = ic->dsr;
2376 icount->rng = ic->rng;
2377 icount->dcd = ic->dcd;
2378 icount->tx = ic->tx;
2379 icount->rx = ic->rx;
2380 icount->frame = ic->frame;
2381 icount->parity = ic->parity;
2382 icount->overrun = ic->overrun;
2383 icount->brk = ic->brk;
2384 icount->buf_overrun = ic->buf_overrun;
2388 static int get_serial_info(struct edgeport_port *edge_port,
2389 struct serial_struct __user *retinfo)
2391 struct serial_struct tmp;
2397 cwait = edge_port->port->port.closing_wait;
2398 if (cwait != ASYNC_CLOSING_WAIT_NONE)
2399 cwait = jiffies_to_msecs(closing_wait) / 10;
2401 memset(&tmp, 0, sizeof(tmp));
2403 tmp.type = PORT_16550A;
2404 tmp.line = edge_port->port->serial->minor;
2405 tmp.port = edge_port->port->number;
2407 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
2408 tmp.xmit_fifo_size = edge_port->port->bulk_out_size;
2409 tmp.baud_base = 9600;
2410 tmp.close_delay = 5*HZ;
2411 tmp.closing_wait = cwait;
2413 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2418 static int edge_ioctl(struct tty_struct *tty,
2419 unsigned int cmd, unsigned long arg)
2421 struct usb_serial_port *port = tty->driver_data;
2422 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2423 struct async_icount cnow;
2424 struct async_icount cprev;
2426 dev_dbg(&port->dev, "%s - port %d, cmd = 0x%x\n", __func__, port->number, cmd);
2430 dev_dbg(&port->dev, "%s - TIOCGSERIAL\n", __func__);
2431 return get_serial_info(edge_port,
2432 (struct serial_struct __user *) arg);
2434 dev_dbg(&port->dev, "%s - TIOCMIWAIT\n", __func__);
2435 cprev = edge_port->icount;
2437 interruptible_sleep_on(&edge_port->delta_msr_wait);
2438 /* see if a signal did it */
2439 if (signal_pending(current))
2440 return -ERESTARTSYS;
2441 cnow = edge_port->icount;
2442 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
2443 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
2444 return -EIO; /* no change => error */
2445 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
2446 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
2447 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
2448 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) {
2456 return -ENOIOCTLCMD;
2459 static void edge_break(struct tty_struct *tty, int break_state)
2461 struct usb_serial_port *port = tty->driver_data;
2462 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2464 int bv = 0; /* Off */
2466 tty_wait_until_sent(tty, 0);
2468 if (break_state == -1)
2470 status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv);
2472 dev_dbg(&port->dev, "%s - error %d sending break set/clear command.\n",
2476 static int edge_startup(struct usb_serial *serial)
2478 struct edgeport_serial *edge_serial;
2481 /* create our private serial structure */
2482 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
2483 if (edge_serial == NULL) {
2484 dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__);
2487 mutex_init(&edge_serial->es_lock);
2488 edge_serial->serial = serial;
2489 usb_set_serial_data(serial, edge_serial);
2491 status = download_fw(edge_serial);
2500 static void edge_disconnect(struct usb_serial *serial)
2504 static void edge_release(struct usb_serial *serial)
2506 kfree(usb_get_serial_data(serial));
2509 static int edge_port_probe(struct usb_serial_port *port)
2511 struct edgeport_port *edge_port;
2514 edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL);
2518 ret = kfifo_alloc(&edge_port->write_fifo, EDGE_OUT_BUF_SIZE,
2525 spin_lock_init(&edge_port->ep_lock);
2526 edge_port->port = port;
2527 edge_port->edge_serial = usb_get_serial_data(port->serial);
2528 edge_port->bUartMode = default_uart_mode;
2530 usb_set_serial_port_data(port, edge_port);
2532 ret = edge_create_sysfs_attrs(port);
2534 kfifo_free(&edge_port->write_fifo);
2539 port->port.closing_wait = msecs_to_jiffies(closing_wait * 10);
2544 static int edge_port_remove(struct usb_serial_port *port)
2546 struct edgeport_port *edge_port;
2548 edge_port = usb_get_serial_port_data(port);
2550 edge_remove_sysfs_attrs(port);
2551 kfifo_free(&edge_port->write_fifo);
2557 /* Sysfs Attributes */
2559 static ssize_t show_uart_mode(struct device *dev,
2560 struct device_attribute *attr, char *buf)
2562 struct usb_serial_port *port = to_usb_serial_port(dev);
2563 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2565 return sprintf(buf, "%d\n", edge_port->bUartMode);
2568 static ssize_t store_uart_mode(struct device *dev,
2569 struct device_attribute *attr, const char *valbuf, size_t count)
2571 struct usb_serial_port *port = to_usb_serial_port(dev);
2572 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2573 unsigned int v = simple_strtoul(valbuf, NULL, 0);
2575 dev_dbg(dev, "%s: setting uart_mode = %d\n", __func__, v);
2578 edge_port->bUartMode = v;
2580 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v);
2585 static DEVICE_ATTR(uart_mode, S_IWUSR | S_IRUGO, show_uart_mode,
2588 static int edge_create_sysfs_attrs(struct usb_serial_port *port)
2590 return device_create_file(&port->dev, &dev_attr_uart_mode);
2593 static int edge_remove_sysfs_attrs(struct usb_serial_port *port)
2595 device_remove_file(&port->dev, &dev_attr_uart_mode);
2600 static struct usb_serial_driver edgeport_1port_device = {
2602 .owner = THIS_MODULE,
2603 .name = "edgeport_ti_1",
2605 .description = "Edgeport TI 1 port adapter",
2606 .id_table = edgeport_1port_id_table,
2609 .close = edge_close,
2610 .throttle = edge_throttle,
2611 .unthrottle = edge_unthrottle,
2612 .attach = edge_startup,
2613 .disconnect = edge_disconnect,
2614 .release = edge_release,
2615 .port_probe = edge_port_probe,
2616 .port_remove = edge_port_remove,
2617 .ioctl = edge_ioctl,
2618 .set_termios = edge_set_termios,
2619 .tiocmget = edge_tiocmget,
2620 .tiocmset = edge_tiocmset,
2621 .get_icount = edge_get_icount,
2622 .write = edge_write,
2623 .write_room = edge_write_room,
2624 .chars_in_buffer = edge_chars_in_buffer,
2625 .break_ctl = edge_break,
2626 .read_int_callback = edge_interrupt_callback,
2627 .read_bulk_callback = edge_bulk_in_callback,
2628 .write_bulk_callback = edge_bulk_out_callback,
2631 static struct usb_serial_driver edgeport_2port_device = {
2633 .owner = THIS_MODULE,
2634 .name = "edgeport_ti_2",
2636 .description = "Edgeport TI 2 port adapter",
2637 .id_table = edgeport_2port_id_table,
2640 .close = edge_close,
2641 .throttle = edge_throttle,
2642 .unthrottle = edge_unthrottle,
2643 .attach = edge_startup,
2644 .disconnect = edge_disconnect,
2645 .release = edge_release,
2646 .port_probe = edge_port_probe,
2647 .port_remove = edge_port_remove,
2648 .ioctl = edge_ioctl,
2649 .set_termios = edge_set_termios,
2650 .tiocmget = edge_tiocmget,
2651 .tiocmset = edge_tiocmset,
2652 .write = edge_write,
2653 .write_room = edge_write_room,
2654 .chars_in_buffer = edge_chars_in_buffer,
2655 .break_ctl = edge_break,
2656 .read_int_callback = edge_interrupt_callback,
2657 .read_bulk_callback = edge_bulk_in_callback,
2658 .write_bulk_callback = edge_bulk_out_callback,
2661 static struct usb_serial_driver * const serial_drivers[] = {
2662 &edgeport_1port_device, &edgeport_2port_device, NULL
2665 module_usb_serial_driver(serial_drivers, id_table_combined);
2667 MODULE_AUTHOR(DRIVER_AUTHOR);
2668 MODULE_DESCRIPTION(DRIVER_DESC);
2669 MODULE_LICENSE("GPL");
2670 MODULE_FIRMWARE("edgeport/down3.bin");
2672 module_param(closing_wait, int, S_IRUGO | S_IWUSR);
2673 MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs");
2675 module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR);
2676 MODULE_PARM_DESC(ignore_cpu_rev,
2677 "Ignore the cpu revision when connecting to a device");
2679 module_param(default_uart_mode, int, S_IRUGO | S_IWUSR);
2680 MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ...");