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>.
21 * July 11, 2002 Removed 4 port device structure since all TI UMP
22 * chips have only 2 ports
23 * David Iacovelli (davidi@ionetworks.com)
27 #include <linux/kernel.h>
28 #include <linux/jiffies.h>
29 #include <linux/errno.h>
30 #include <linux/init.h>
31 #include <linux/slab.h>
32 #include <linux/tty.h>
33 #include <linux/tty_driver.h>
34 #include <linux/tty_flip.h>
35 #include <linux/module.h>
36 #include <linux/spinlock.h>
37 #include <linux/mutex.h>
38 #include <linux/serial.h>
39 #include <linux/kfifo.h>
40 #include <linux/ioctl.h>
41 #include <linux/firmware.h>
42 #include <linux/uaccess.h>
43 #include <linux/usb.h>
44 #include <linux/usb/serial.h>
47 #include "io_usbvend.h"
53 #define DRIVER_VERSION "v0.7mode043006"
54 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
55 #define DRIVER_DESC "Edgeport USB Serial Driver"
57 #define EPROM_PAGE_SIZE 64
60 /* different hardware types */
61 #define HARDWARE_TYPE_930 0
62 #define HARDWARE_TYPE_TIUMP 1
64 /* IOCTL_PRIVATE_TI_GET_MODE Definitions */
65 #define TI_MODE_CONFIGURING 0 /* Device has not entered start device */
66 #define TI_MODE_BOOT 1 /* Staying in boot mode */
67 #define TI_MODE_DOWNLOAD 2 /* Made it to download mode */
68 #define TI_MODE_TRANSITIONING 3 /* Currently in boot mode but
69 transitioning to download mode */
72 #define EDGE_READ_URB_RUNNING 0
73 #define EDGE_READ_URB_STOPPING 1
74 #define EDGE_READ_URB_STOPPED 2
76 #define EDGE_CLOSING_WAIT 4000 /* in .01 sec */
78 #define EDGE_OUT_BUF_SIZE 1024
81 /* Product information read from the Edgeport */
83 int TiMode; /* Current TI Mode */
84 __u8 hardware_type; /* Type of hardware */
85 } __attribute__((packed));
87 struct edgeport_port {
94 __u32 ump_read_timeout; /* Number of milliseconds the UMP will
95 wait without data before completing
100 struct async_icount icount;
101 wait_queue_head_t delta_msr_wait; /* for handling sleeping while
102 waiting for msr change to
104 struct edgeport_serial *edge_serial;
105 struct usb_serial_port *port;
106 __u8 bUartMode; /* Port type, 0: RS232, etc. */
108 int ep_read_urb_state;
109 int ep_write_urb_in_use;
110 struct kfifo write_fifo;
113 struct edgeport_serial {
114 struct product_info product_info;
115 u8 TI_I2C_Type; /* Type of I2C in UMP */
116 u8 TiReadI2C; /* Set to TRUE if we have read the
118 struct mutex es_lock;
120 struct usb_serial *serial;
124 /* Devices that this driver supports */
125 static const struct usb_device_id edgeport_1port_id_table[] = {
126 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
127 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
128 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
129 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
130 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
131 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
132 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
133 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
134 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
135 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
136 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
137 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
138 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
139 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
140 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
141 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
145 static const struct usb_device_id edgeport_2port_id_table[] = {
146 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
147 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
148 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
149 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
150 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
151 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
152 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
153 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
154 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
155 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
156 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
157 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
158 /* The 4, 8 and 16 port devices show up as multiple 2 port devices */
159 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
160 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
161 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
162 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
163 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
167 /* Devices that this driver supports */
168 static const struct usb_device_id id_table_combined[] = {
169 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
170 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
171 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
172 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
173 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
174 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
175 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
176 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
177 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
178 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
179 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
180 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
181 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
182 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
183 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
184 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
185 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
186 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
187 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
188 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
189 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
190 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
191 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
192 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
193 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
194 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
195 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
196 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
197 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
198 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
199 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
200 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
201 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
205 MODULE_DEVICE_TABLE(usb, id_table_combined);
207 static struct usb_driver io_driver = {
209 .probe = usb_serial_probe,
210 .disconnect = usb_serial_disconnect,
211 .id_table = id_table_combined,
216 static unsigned char OperationalMajorVersion;
217 static unsigned char OperationalMinorVersion;
218 static unsigned short OperationalBuildNumber;
222 static int closing_wait = EDGE_CLOSING_WAIT;
223 static int ignore_cpu_rev;
224 static int default_uart_mode; /* RS232 */
226 static void edge_tty_recv(struct device *dev, struct tty_struct *tty,
227 unsigned char *data, int length);
229 static void stop_read(struct edgeport_port *edge_port);
230 static int restart_read(struct edgeport_port *edge_port);
232 static void edge_set_termios(struct tty_struct *tty,
233 struct usb_serial_port *port, struct ktermios *old_termios);
234 static void edge_send(struct tty_struct *tty);
236 /* sysfs attributes */
237 static int edge_create_sysfs_attrs(struct usb_serial_port *port);
238 static int edge_remove_sysfs_attrs(struct usb_serial_port *port);
241 static int ti_vread_sync(struct usb_device *dev, __u8 request,
242 __u16 value, __u16 index, u8 *data, int size)
246 status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request,
247 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN),
248 value, index, data, size, 1000);
251 if (status != size) {
252 dbg("%s - wanted to write %d, but only wrote %d",
253 __func__, size, status);
259 static int ti_vsend_sync(struct usb_device *dev, __u8 request,
260 __u16 value, __u16 index, u8 *data, int size)
264 status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request,
265 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT),
266 value, index, data, size, 1000);
269 if (status != size) {
270 dbg("%s - wanted to write %d, but only wrote %d",
271 __func__, size, status);
277 static int send_cmd(struct usb_device *dev, __u8 command,
278 __u8 moduleid, __u16 value, u8 *data,
281 return ti_vsend_sync(dev, command, value, moduleid, data, size);
284 /* clear tx/rx buffers and fifo in TI UMP */
285 static int purge_port(struct usb_serial_port *port, __u16 mask)
287 int port_number = port->number - port->serial->minor;
289 dbg("%s - port %d, mask %x", __func__, port_number, mask);
291 return send_cmd(port->serial->dev,
293 (__u8)(UMPM_UART1_PORT + port_number),
300 * read_download_mem - Read edgeport memory from TI chip
301 * @dev: usb device pointer
302 * @start_address: Device CPU address at which to read
303 * @length: Length of above data
304 * @address_type: Can read both XDATA and I2C
305 * @buffer: pointer to input data buffer
307 static int read_download_mem(struct usb_device *dev, int start_address,
308 int length, __u8 address_type, __u8 *buffer)
312 __be16 be_start_address;
314 dbg("%s - @ %x for %d", __func__, start_address, length);
316 /* Read in blocks of 64 bytes
317 * (TI firmware can't handle more than 64 byte reads)
323 read_length = (__u8)length;
325 if (read_length > 1) {
326 dbg("%s - @ %x for %d", __func__,
327 start_address, read_length);
329 be_start_address = cpu_to_be16(start_address);
330 status = ti_vread_sync(dev, UMPC_MEMORY_READ,
332 (__force __u16)be_start_address,
333 buffer, read_length);
336 dbg("%s - ERROR %x", __func__, status);
341 usb_serial_debug_data(debug, &dev->dev, __func__,
342 read_length, buffer);
344 /* Update pointers/length */
345 start_address += read_length;
346 buffer += read_length;
347 length -= read_length;
353 static int read_ram(struct usb_device *dev, int start_address,
354 int length, __u8 *buffer)
356 return read_download_mem(dev, start_address, length,
357 DTK_ADDR_SPACE_XDATA, buffer);
360 /* Read edgeport memory to a given block */
361 static int read_boot_mem(struct edgeport_serial *serial,
362 int start_address, int length, __u8 *buffer)
367 for (i = 0; i < length; i++) {
368 status = ti_vread_sync(serial->serial->dev,
369 UMPC_MEMORY_READ, serial->TI_I2C_Type,
370 (__u16)(start_address+i), &buffer[i], 0x01);
372 dbg("%s - ERROR %x", __func__, status);
377 dbg("%s - start_address = %x, length = %d",
378 __func__, start_address, length);
379 usb_serial_debug_data(debug, &serial->serial->dev->dev,
380 __func__, length, buffer);
382 serial->TiReadI2C = 1;
387 /* Write given block to TI EPROM memory */
388 static int write_boot_mem(struct edgeport_serial *serial,
389 int start_address, int length, __u8 *buffer)
395 /* Must do a read before write */
396 if (!serial->TiReadI2C) {
397 temp = kmalloc(1, GFP_KERNEL);
399 dev_err(&serial->serial->dev->dev,
400 "%s - out of memory\n", __func__);
403 status = read_boot_mem(serial, 0, 1, temp);
409 for (i = 0; i < length; ++i) {
410 status = ti_vsend_sync(serial->serial->dev,
411 UMPC_MEMORY_WRITE, buffer[i],
412 (__u16)(i + start_address), NULL, 0);
417 dbg("%s - start_sddr = %x, length = %d",
418 __func__, start_address, length);
419 usb_serial_debug_data(debug, &serial->serial->dev->dev,
420 __func__, length, buffer);
426 /* Write edgeport I2C memory to TI chip */
427 static int write_i2c_mem(struct edgeport_serial *serial,
428 int start_address, int length, __u8 address_type, __u8 *buffer)
432 __be16 be_start_address;
434 /* We can only send a maximum of 1 aligned byte page at a time */
436 /* calculate the number of bytes left in the first page */
437 write_length = EPROM_PAGE_SIZE -
438 (start_address & (EPROM_PAGE_SIZE - 1));
440 if (write_length > length)
441 write_length = length;
443 dbg("%s - BytesInFirstPage Addr = %x, length = %d",
444 __func__, start_address, write_length);
445 usb_serial_debug_data(debug, &serial->serial->dev->dev,
446 __func__, write_length, buffer);
448 /* Write first page */
449 be_start_address = cpu_to_be16(start_address);
450 status = ti_vsend_sync(serial->serial->dev,
451 UMPC_MEMORY_WRITE, (__u16)address_type,
452 (__force __u16)be_start_address,
453 buffer, write_length);
455 dbg("%s - ERROR %d", __func__, status);
459 length -= write_length;
460 start_address += write_length;
461 buffer += write_length;
463 /* We should be aligned now -- can write
464 max page size bytes at a time */
466 if (length > EPROM_PAGE_SIZE)
467 write_length = EPROM_PAGE_SIZE;
469 write_length = length;
471 dbg("%s - Page Write Addr = %x, length = %d",
472 __func__, start_address, write_length);
473 usb_serial_debug_data(debug, &serial->serial->dev->dev,
474 __func__, write_length, buffer);
476 /* Write next page */
477 be_start_address = cpu_to_be16(start_address);
478 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE,
480 (__force __u16)be_start_address,
481 buffer, write_length);
483 dev_err(&serial->serial->dev->dev, "%s - ERROR %d\n",
488 length -= write_length;
489 start_address += write_length;
490 buffer += write_length;
495 /* Examine the UMP DMA registers and LSR
497 * Check the MSBit of the X and Y DMA byte count registers.
498 * A zero in this bit indicates that the TX DMA buffers are empty
499 * then check the TX Empty bit in the UART.
501 static int tx_active(struct edgeport_port *port)
504 struct out_endpoint_desc_block *oedb;
508 oedb = kmalloc(sizeof(*oedb), GFP_KERNEL);
510 dev_err(&port->port->dev, "%s - out of memory\n", __func__);
514 lsr = kmalloc(1, GFP_KERNEL); /* Sigh, that's right, just one byte,
515 as not all platforms can do DMA
521 /* Read the DMA Count Registers */
522 status = read_ram(port->port->serial->dev, port->dma_address,
523 sizeof(*oedb), (void *)oedb);
525 goto exit_is_tx_active;
527 dbg("%s - XByteCount 0x%X", __func__, oedb->XByteCount);
530 status = read_ram(port->port->serial->dev,
531 port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr);
534 goto exit_is_tx_active;
535 dbg("%s - LSR = 0x%X", __func__, *lsr);
537 /* If either buffer has data or we are transmitting then return TRUE */
538 if ((oedb->XByteCount & 0x80) != 0)
541 if ((*lsr & UMP_UART_LSR_TX_MASK) == 0)
544 /* We return Not Active if we get any kind of error */
546 dbg("%s - return %d", __func__, bytes_left);
553 static void chase_port(struct edgeport_port *port, unsigned long timeout,
557 struct tty_struct *tty = tty_port_tty_get(&port->port->port);
565 timeout = (HZ * EDGE_CLOSING_WAIT)/100;
567 /* wait for data to drain from the buffer */
568 spin_lock_irqsave(&port->ep_lock, flags);
569 init_waitqueue_entry(&wait, current);
570 add_wait_queue(&tty->write_wait, &wait);
572 set_current_state(TASK_INTERRUPTIBLE);
573 if (kfifo_len(&port->write_fifo) == 0
574 || timeout == 0 || signal_pending(current)
575 || !usb_get_intfdata(port->port->serial->interface))
578 spin_unlock_irqrestore(&port->ep_lock, flags);
579 timeout = schedule_timeout(timeout);
580 spin_lock_irqsave(&port->ep_lock, flags);
582 set_current_state(TASK_RUNNING);
583 remove_wait_queue(&tty->write_wait, &wait);
585 kfifo_reset_out(&port->write_fifo);
586 spin_unlock_irqrestore(&port->ep_lock, flags);
589 /* wait for data to drain from the device */
591 while ((long)(jiffies - timeout) < 0 && !signal_pending(current)
592 && usb_get_intfdata(port->port->serial->interface)) {
593 /* not disconnected */
594 if (!tx_active(port))
600 if (!usb_get_intfdata(port->port->serial->interface))
603 /* wait one more character time, based on baud rate */
604 /* (tx_active doesn't seem to wait for the last byte) */
605 baud_rate = port->baud_rate;
608 msleep(max(1, DIV_ROUND_UP(10000, baud_rate)));
611 static int choose_config(struct usb_device *dev)
614 * There may be multiple configurations on this device, in which case
615 * we would need to read and parse all of them to find out which one
616 * we want. However, we just support one config at this point,
617 * configuration # 1, which is Config Descriptor 0.
620 dbg("%s - Number of Interfaces = %d",
621 __func__, dev->config->desc.bNumInterfaces);
622 dbg("%s - MAX Power = %d",
623 __func__, dev->config->desc.bMaxPower * 2);
625 if (dev->config->desc.bNumInterfaces != 1) {
626 dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n",
634 static int read_rom(struct edgeport_serial *serial,
635 int start_address, int length, __u8 *buffer)
639 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
640 status = read_download_mem(serial->serial->dev,
646 status = read_boot_mem(serial, start_address, length,
652 static int write_rom(struct edgeport_serial *serial, int start_address,
653 int length, __u8 *buffer)
655 if (serial->product_info.TiMode == TI_MODE_BOOT)
656 return write_boot_mem(serial, start_address, length,
659 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD)
660 return write_i2c_mem(serial, start_address, length,
661 serial->TI_I2C_Type, buffer);
667 /* Read a descriptor header from I2C based on type */
668 static int get_descriptor_addr(struct edgeport_serial *serial,
669 int desc_type, struct ti_i2c_desc *rom_desc)
674 /* Search for requested descriptor in I2C */
677 status = read_rom(serial,
679 sizeof(struct ti_i2c_desc),
684 if (rom_desc->Type == desc_type)
685 return start_address;
687 start_address = start_address + sizeof(struct ti_i2c_desc)
690 } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type);
695 /* Validate descriptor checksum */
696 static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer)
701 for (i = 0; i < rom_desc->Size; i++)
702 cs = (__u8)(cs + buffer[i]);
704 if (cs != rom_desc->CheckSum) {
705 dbg("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs);
711 /* Make sure that the I2C image is good */
712 static int check_i2c_image(struct edgeport_serial *serial)
714 struct device *dev = &serial->serial->dev->dev;
716 struct ti_i2c_desc *rom_desc;
717 int start_address = 2;
721 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
723 dev_err(dev, "%s - out of memory\n", __func__);
726 buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL);
728 dev_err(dev, "%s - out of memory when allocating buffer\n",
734 /* Read the first byte (Signature0) must be 0x52 or 0x10 */
735 status = read_rom(serial, 0, 1, buffer);
739 if (*buffer != UMP5152 && *buffer != UMP3410) {
740 dev_err(dev, "%s - invalid buffer signature\n", __func__);
746 /* Validate the I2C */
747 status = read_rom(serial,
749 sizeof(struct ti_i2c_desc),
754 if ((start_address + sizeof(struct ti_i2c_desc) +
755 rom_desc->Size) > TI_MAX_I2C_SIZE) {
757 dbg("%s - structure too big, erroring out.", __func__);
761 dbg("%s Type = 0x%x", __func__, rom_desc->Type);
763 /* Skip type 2 record */
764 ttype = rom_desc->Type & 0x0f;
765 if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC
766 && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) {
767 /* Read the descriptor data */
768 status = read_rom(serial, start_address +
769 sizeof(struct ti_i2c_desc),
770 rom_desc->Size, buffer);
774 status = valid_csum(rom_desc, buffer);
778 start_address = start_address + sizeof(struct ti_i2c_desc) +
781 } while ((rom_desc->Type != I2C_DESC_TYPE_ION) &&
782 (start_address < TI_MAX_I2C_SIZE));
784 if ((rom_desc->Type != I2C_DESC_TYPE_ION) ||
785 (start_address > TI_MAX_I2C_SIZE))
794 static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer)
798 struct ti_i2c_desc *rom_desc;
799 struct edge_ti_manuf_descriptor *desc;
801 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
803 dev_err(&serial->serial->dev->dev, "%s - out of memory\n",
807 start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION,
810 if (!start_address) {
811 dbg("%s - Edge Descriptor not found in I2C", __func__);
816 /* Read the descriptor data */
817 status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc),
818 rom_desc->Size, buffer);
822 status = valid_csum(rom_desc, buffer);
824 desc = (struct edge_ti_manuf_descriptor *)buffer;
825 dbg("%s - IonConfig 0x%x", __func__, desc->IonConfig);
826 dbg("%s - Version %d", __func__, desc->Version);
827 dbg("%s - Cpu/Board 0x%x", __func__, desc->CpuRev_BoardRev);
828 dbg("%s - NumPorts %d", __func__, desc->NumPorts);
829 dbg("%s - NumVirtualPorts %d", __func__, desc->NumVirtualPorts);
830 dbg("%s - TotalPorts %d", __func__, desc->TotalPorts);
837 /* Build firmware header used for firmware update */
838 static int build_i2c_fw_hdr(__u8 *header, struct device *dev)
845 struct ti_i2c_desc *i2c_header;
846 struct ti_i2c_image_header *img_header;
847 struct ti_i2c_firmware_rec *firmware_rec;
848 const struct firmware *fw;
849 const char *fw_name = "edgeport/down3.bin";
851 /* In order to update the I2C firmware we must change the type 2 record
852 * to type 0xF2. This will force the UMP to come up in Boot Mode.
853 * Then while in boot mode, the driver will download the latest
854 * firmware (padded to 15.5k) into the UMP ram. And finally when the
855 * device comes back up in download mode the driver will cause the new
856 * firmware to be copied from the UMP Ram to I2C and the firmware will
857 * update the record type from 0xf2 to 0x02.
860 /* Allocate a 15.5k buffer + 2 bytes for version number
861 * (Firmware Record) */
862 buffer_size = (((1024 * 16) - 512 ) +
863 sizeof(struct ti_i2c_firmware_rec));
865 buffer = kmalloc(buffer_size, GFP_KERNEL);
867 dev_err(dev, "%s - out of memory\n", __func__);
871 // Set entire image of 0xffs
872 memset(buffer, 0xff, buffer_size);
874 err = request_firmware(&fw, fw_name, dev);
876 printk(KERN_ERR "Failed to load image \"%s\" err %d\n",
882 /* Save Download Version Number */
883 OperationalMajorVersion = fw->data[0];
884 OperationalMinorVersion = fw->data[1];
885 OperationalBuildNumber = fw->data[2] | (fw->data[3] << 8);
887 /* Copy version number into firmware record */
888 firmware_rec = (struct ti_i2c_firmware_rec *)buffer;
890 firmware_rec->Ver_Major = OperationalMajorVersion;
891 firmware_rec->Ver_Minor = OperationalMinorVersion;
893 /* Pointer to fw_down memory image */
894 img_header = (struct ti_i2c_image_header *)&fw->data[4];
896 memcpy(buffer + sizeof(struct ti_i2c_firmware_rec),
897 &fw->data[4 + sizeof(struct ti_i2c_image_header)],
898 le16_to_cpu(img_header->Length));
900 release_firmware(fw);
902 for (i=0; i < buffer_size; i++) {
903 cs = (__u8)(cs + buffer[i]);
908 /* Build new header */
909 i2c_header = (struct ti_i2c_desc *)header;
910 firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data;
912 i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK;
913 i2c_header->Size = (__u16)buffer_size;
914 i2c_header->CheckSum = cs;
915 firmware_rec->Ver_Major = OperationalMajorVersion;
916 firmware_rec->Ver_Minor = OperationalMinorVersion;
921 /* Try to figure out what type of I2c we have */
922 static int i2c_type_bootmode(struct edgeport_serial *serial)
927 data = kmalloc(1, GFP_KERNEL);
929 dev_err(&serial->serial->dev->dev,
930 "%s - out of memory\n", __func__);
934 /* Try to read type 2 */
935 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
936 DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01);
938 dbg("%s - read 2 status error = %d", __func__, status);
940 dbg("%s - read 2 data = 0x%x", __func__, *data);
941 if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
942 dbg("%s - ROM_TYPE_II", __func__);
943 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
947 /* Try to read type 3 */
948 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
949 DTK_ADDR_SPACE_I2C_TYPE_III, 0, data, 0x01);
951 dbg("%s - read 3 status error = %d", __func__, status);
953 dbg("%s - read 2 data = 0x%x", __func__, *data);
954 if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
955 dbg("%s - ROM_TYPE_III", __func__);
956 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III;
960 dbg("%s - Unknown", __func__);
961 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
968 static int bulk_xfer(struct usb_serial *serial, void *buffer,
969 int length, int *num_sent)
973 status = usb_bulk_msg(serial->dev,
974 usb_sndbulkpipe(serial->dev,
975 serial->port[0]->bulk_out_endpointAddress),
976 buffer, length, num_sent, 1000);
980 /* Download given firmware image to the device (IN BOOT MODE) */
981 static int download_code(struct edgeport_serial *serial, __u8 *image,
989 /* Transfer firmware image */
990 for (pos = 0; pos < image_length; ) {
991 /* Read the next buffer from file */
992 transfer = image_length - pos;
993 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE)
994 transfer = EDGE_FW_BULK_MAX_PACKET_SIZE;
997 status = bulk_xfer(serial->serial, &image[pos],
1001 /* Advance buffer pointer */
1009 static int config_boot_dev(struct usb_device *dev)
1014 static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc)
1016 return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev);
1020 * DownloadTIFirmware - Download run-time operating firmware to the TI5052
1022 * This routine downloads the main operating code into the TI5052, using the
1023 * boot code already burned into E2PROM or ROM.
1025 static int download_fw(struct edgeport_serial *serial)
1027 struct device *dev = &serial->serial->dev->dev;
1030 struct edge_ti_manuf_descriptor *ti_manuf_desc;
1031 struct usb_interface_descriptor *interface;
1032 int download_cur_ver;
1033 int download_new_ver;
1035 /* This routine is entered by both the BOOT mode and the Download mode
1036 * We can determine which code is running by the reading the config
1037 * descriptor and if we have only one bulk pipe it is in boot mode
1039 serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP;
1041 /* Default to type 2 i2c */
1042 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1044 status = choose_config(serial->serial->dev);
1048 interface = &serial->serial->interface->cur_altsetting->desc;
1050 dev_err(dev, "%s - no interface set, error!\n", __func__);
1055 * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING
1056 * if we have more than one endpoint we are definitely in download
1059 if (interface->bNumEndpoints > 1)
1060 serial->product_info.TiMode = TI_MODE_DOWNLOAD;
1062 /* Otherwise we will remain in configuring mode */
1063 serial->product_info.TiMode = TI_MODE_CONFIGURING;
1065 /********************************************************************/
1067 /********************************************************************/
1068 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
1069 struct ti_i2c_desc *rom_desc;
1071 dbg("%s - RUNNING IN DOWNLOAD MODE", __func__);
1073 status = check_i2c_image(serial);
1075 dbg("%s - DOWNLOAD MODE -- BAD I2C", __func__);
1079 /* Validate Hardware version number
1080 * Read Manufacturing Descriptor from TI Based Edgeport
1082 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
1083 if (!ti_manuf_desc) {
1084 dev_err(dev, "%s - out of memory.\n", __func__);
1087 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
1089 kfree(ti_manuf_desc);
1093 /* Check version number of ION descriptor */
1094 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
1095 dbg("%s - Wrong CPU Rev %d (Must be 2)",
1096 __func__, ti_cpu_rev(ti_manuf_desc));
1097 kfree(ti_manuf_desc);
1101 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
1103 dev_err(dev, "%s - out of memory.\n", __func__);
1104 kfree(ti_manuf_desc);
1108 /* Search for type 2 record (firmware record) */
1109 start_address = get_descriptor_addr(serial,
1110 I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc);
1111 if (start_address != 0) {
1112 struct ti_i2c_firmware_rec *firmware_version;
1115 dbg("%s - Found Type FIRMWARE (Type 2) record",
1118 firmware_version = kmalloc(sizeof(*firmware_version),
1120 if (!firmware_version) {
1121 dev_err(dev, "%s - out of memory.\n", __func__);
1123 kfree(ti_manuf_desc);
1127 /* Validate version number
1128 * Read the descriptor data
1130 status = read_rom(serial, start_address +
1131 sizeof(struct ti_i2c_desc),
1132 sizeof(struct ti_i2c_firmware_rec),
1133 (__u8 *)firmware_version);
1135 kfree(firmware_version);
1137 kfree(ti_manuf_desc);
1141 /* Check version number of download with current
1143 download_cur_ver = (firmware_version->Ver_Major << 8) +
1144 (firmware_version->Ver_Minor);
1145 download_new_ver = (OperationalMajorVersion << 8) +
1146 (OperationalMinorVersion);
1148 dbg("%s - >> FW Versions Device %d.%d Driver %d.%d",
1150 firmware_version->Ver_Major,
1151 firmware_version->Ver_Minor,
1152 OperationalMajorVersion,
1153 OperationalMinorVersion);
1155 /* Check if we have an old version in the I2C and
1156 update if necessary */
1157 if (download_cur_ver < download_new_ver) {
1158 dbg("%s - Update I2C dld from %d.%d to %d.%d",
1160 firmware_version->Ver_Major,
1161 firmware_version->Ver_Minor,
1162 OperationalMajorVersion,
1163 OperationalMinorVersion);
1165 record = kmalloc(1, GFP_KERNEL);
1167 dev_err(dev, "%s - out of memory.\n",
1169 kfree(firmware_version);
1171 kfree(ti_manuf_desc);
1174 /* In order to update the I2C firmware we must
1175 * change the type 2 record to type 0xF2. This
1176 * will force the UMP to come up in Boot Mode.
1177 * Then while in boot mode, the driver will
1178 * download the latest firmware (padded to
1179 * 15.5k) into the UMP ram. Finally when the
1180 * device comes back up in download mode the
1181 * driver will cause the new firmware to be
1182 * copied from the UMP Ram to I2C and the
1183 * firmware will update the record type from
1186 *record = I2C_DESC_TYPE_FIRMWARE_BLANK;
1188 /* Change the I2C Firmware record type to
1189 0xf2 to trigger an update */
1190 status = write_rom(serial, start_address,
1191 sizeof(*record), record);
1194 kfree(firmware_version);
1196 kfree(ti_manuf_desc);
1200 /* verify the write -- must do this in order
1201 * for write to complete before we do the
1204 status = read_rom(serial,
1210 kfree(firmware_version);
1212 kfree(ti_manuf_desc);
1216 if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) {
1218 "%s - error resetting device\n",
1221 kfree(firmware_version);
1223 kfree(ti_manuf_desc);
1227 dbg("%s - HARDWARE RESET", __func__);
1229 /* Reset UMP -- Back to BOOT MODE */
1230 status = ti_vsend_sync(serial->serial->dev,
1231 UMPC_HARDWARE_RESET,
1234 dbg("%s - HARDWARE RESET return %d",
1237 /* return an error on purpose. */
1239 kfree(firmware_version);
1241 kfree(ti_manuf_desc);
1244 kfree(firmware_version);
1246 /* Search for type 0xF2 record (firmware blank record) */
1247 else if ((start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) {
1248 #define HEADER_SIZE (sizeof(struct ti_i2c_desc) + \
1249 sizeof(struct ti_i2c_firmware_rec))
1253 header = kmalloc(HEADER_SIZE, GFP_KERNEL);
1255 dev_err(dev, "%s - out of memory.\n", __func__);
1257 kfree(ti_manuf_desc);
1261 vheader = kmalloc(HEADER_SIZE, GFP_KERNEL);
1263 dev_err(dev, "%s - out of memory.\n", __func__);
1266 kfree(ti_manuf_desc);
1270 dbg("%s - Found Type BLANK FIRMWARE (Type F2) record",
1274 * In order to update the I2C firmware we must change
1275 * the type 2 record to type 0xF2. This will force the
1276 * UMP to come up in Boot Mode. Then while in boot
1277 * mode, the driver will download the latest firmware
1278 * (padded to 15.5k) into the UMP ram. Finally when the
1279 * device comes back up in download mode the driver
1280 * will cause the new firmware to be copied from the
1281 * UMP Ram to I2C and the firmware will update the
1282 * record type from 0xf2 to 0x02.
1284 status = build_i2c_fw_hdr(header, dev);
1289 kfree(ti_manuf_desc);
1293 /* Update I2C with type 0xf2 record with correct
1294 size and checksum */
1295 status = write_rom(serial,
1303 kfree(ti_manuf_desc);
1307 /* verify the write -- must do this in order for
1308 write to complete before we do the hardware reset */
1309 status = read_rom(serial, start_address,
1310 HEADER_SIZE, vheader);
1313 dbg("%s - can't read header back", __func__);
1317 kfree(ti_manuf_desc);
1320 if (memcmp(vheader, header, HEADER_SIZE)) {
1321 dbg("%s - write download record failed",
1326 kfree(ti_manuf_desc);
1333 dbg("%s - Start firmware update", __func__);
1335 /* Tell firmware to copy download image into I2C */
1336 status = ti_vsend_sync(serial->serial->dev,
1337 UMPC_COPY_DNLD_TO_I2C, 0, 0, NULL, 0);
1339 dbg("%s - Update complete 0x%x", __func__, status);
1342 "%s - UMPC_COPY_DNLD_TO_I2C failed\n",
1345 kfree(ti_manuf_desc);
1350 // The device is running the download code
1352 kfree(ti_manuf_desc);
1356 /********************************************************************/
1358 /********************************************************************/
1359 dbg("%s - RUNNING IN BOOT MODE", __func__);
1361 /* Configure the TI device so we can use the BULK pipes for download */
1362 status = config_boot_dev(serial->serial->dev);
1366 if (le16_to_cpu(serial->serial->dev->descriptor.idVendor)
1367 != USB_VENDOR_ID_ION) {
1368 dbg("%s - VID = 0x%x", __func__,
1369 le16_to_cpu(serial->serial->dev->descriptor.idVendor));
1370 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1371 goto stayinbootmode;
1374 /* We have an ION device (I2c Must be programmed)
1375 Determine I2C image type */
1376 if (i2c_type_bootmode(serial))
1377 goto stayinbootmode;
1379 /* Check for ION Vendor ID and that the I2C is valid */
1380 if (!check_i2c_image(serial)) {
1381 struct ti_i2c_image_header *header;
1387 const struct firmware *fw;
1388 const char *fw_name = "edgeport/down3.bin";
1390 /* Validate Hardware version number
1391 * Read Manufacturing Descriptor from TI Based Edgeport
1393 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
1394 if (!ti_manuf_desc) {
1395 dev_err(dev, "%s - out of memory.\n", __func__);
1398 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
1400 kfree(ti_manuf_desc);
1401 goto stayinbootmode;
1404 /* Check for version 2 */
1405 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
1406 dbg("%s - Wrong CPU Rev %d (Must be 2)",
1407 __func__, ti_cpu_rev(ti_manuf_desc));
1408 kfree(ti_manuf_desc);
1409 goto stayinbootmode;
1412 kfree(ti_manuf_desc);
1415 * In order to update the I2C firmware we must change the type
1416 * 2 record to type 0xF2. This will force the UMP to come up
1417 * in Boot Mode. Then while in boot mode, the driver will
1418 * download the latest firmware (padded to 15.5k) into the
1419 * UMP ram. Finally when the device comes back up in download
1420 * mode the driver will cause the new firmware to be copied
1421 * from the UMP Ram to I2C and the firmware will update the
1422 * record type from 0xf2 to 0x02.
1424 * Do we really have to copy the whole firmware image,
1425 * or could we do this in place!
1428 /* Allocate a 15.5k buffer + 3 byte header */
1429 buffer_size = (((1024 * 16) - 512) +
1430 sizeof(struct ti_i2c_image_header));
1431 buffer = kmalloc(buffer_size, GFP_KERNEL);
1433 dev_err(dev, "%s - out of memory\n", __func__);
1437 /* Initialize the buffer to 0xff (pad the buffer) */
1438 memset(buffer, 0xff, buffer_size);
1440 err = request_firmware(&fw, fw_name, dev);
1442 printk(KERN_ERR "Failed to load image \"%s\" err %d\n",
1447 memcpy(buffer, &fw->data[4], fw->size - 4);
1448 release_firmware(fw);
1450 for (i = sizeof(struct ti_i2c_image_header);
1451 i < buffer_size; i++) {
1452 cs = (__u8)(cs + buffer[i]);
1455 header = (struct ti_i2c_image_header *)buffer;
1457 /* update length and checksum after padding */
1458 header->Length = cpu_to_le16((__u16)(buffer_size -
1459 sizeof(struct ti_i2c_image_header)));
1460 header->CheckSum = cs;
1462 /* Download the operational code */
1463 dbg("%s - Downloading operational code image (TI UMP)",
1465 status = download_code(serial, buffer, buffer_size);
1470 dbg("%s - Error downloading operational code image",
1475 /* Device will reboot */
1476 serial->product_info.TiMode = TI_MODE_TRANSITIONING;
1478 dbg("%s - Download successful -- Device rebooting...",
1481 /* return an error on purpose */
1486 /* Eprom is invalid or blank stay in boot mode */
1487 dbg("%s - STAYING IN BOOT MODE", __func__);
1488 serial->product_info.TiMode = TI_MODE_BOOT;
1494 static int ti_do_config(struct edgeport_port *port, int feature, int on)
1496 int port_number = port->port->number - port->port->serial->minor;
1497 on = !!on; /* 1 or 0 not bitmask */
1498 return send_cmd(port->port->serial->dev,
1499 feature, (__u8)(UMPM_UART1_PORT + port_number),
1504 static int restore_mcr(struct edgeport_port *port, __u8 mcr)
1508 dbg("%s - %x", __func__, mcr);
1510 status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR);
1513 status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS);
1516 return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK);
1519 /* Convert TI LSR to standard UART flags */
1520 static __u8 map_line_status(__u8 ti_lsr)
1524 #define MAP_FLAG(flagUmp, flagUart) \
1525 if (ti_lsr & flagUmp) \
1528 MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */
1529 MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */
1530 MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */
1531 MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */
1532 MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* rx data available */
1533 MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* tx hold reg empty */
1540 static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr)
1542 struct async_icount *icount;
1543 struct tty_struct *tty;
1545 dbg("%s - %02x", __func__, msr);
1547 if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR |
1548 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
1549 icount = &edge_port->icount;
1551 /* update input line counters */
1552 if (msr & EDGEPORT_MSR_DELTA_CTS)
1554 if (msr & EDGEPORT_MSR_DELTA_DSR)
1556 if (msr & EDGEPORT_MSR_DELTA_CD)
1558 if (msr & EDGEPORT_MSR_DELTA_RI)
1560 wake_up_interruptible(&edge_port->delta_msr_wait);
1563 /* Save the new modem status */
1564 edge_port->shadow_msr = msr & 0xf0;
1566 tty = tty_port_tty_get(&edge_port->port->port);
1567 /* handle CTS flow control */
1568 if (tty && C_CRTSCTS(tty)) {
1569 if (msr & EDGEPORT_MSR_CTS) {
1570 tty->hw_stopped = 0;
1573 tty->hw_stopped = 1;
1579 static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data,
1580 __u8 lsr, __u8 data)
1582 struct async_icount *icount;
1583 __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR |
1584 LSR_FRM_ERR | LSR_BREAK));
1585 struct tty_struct *tty;
1587 dbg("%s - %02x", __func__, new_lsr);
1589 edge_port->shadow_lsr = lsr;
1591 if (new_lsr & LSR_BREAK)
1593 * Parity and Framing errors only count if they
1594 * occur exclusive of a break being received.
1596 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
1598 /* Place LSR data byte into Rx buffer */
1600 tty = tty_port_tty_get(&edge_port->port->port);
1602 edge_tty_recv(&edge_port->port->dev, tty, &data, 1);
1607 /* update input line counters */
1608 icount = &edge_port->icount;
1609 if (new_lsr & LSR_BREAK)
1611 if (new_lsr & LSR_OVER_ERR)
1613 if (new_lsr & LSR_PAR_ERR)
1615 if (new_lsr & LSR_FRM_ERR)
1620 static void edge_interrupt_callback(struct urb *urb)
1622 struct edgeport_serial *edge_serial = urb->context;
1623 struct usb_serial_port *port;
1624 struct edgeport_port *edge_port;
1625 unsigned char *data = urb->transfer_buffer;
1626 int length = urb->actual_length;
1632 int status = urb->status;
1634 dbg("%s", __func__);
1643 /* this urb is terminated, clean up */
1644 dbg("%s - urb shutting down with status: %d",
1648 dev_err(&urb->dev->dev, "%s - nonzero urb status received: "
1649 "%d\n", __func__, status);
1654 dbg("%s - no data in urb", __func__);
1658 usb_serial_debug_data(debug, &edge_serial->serial->dev->dev,
1659 __func__, length, data);
1662 dbg("%s - expecting packet of size 2, got %d",
1667 port_number = TIUMP_GET_PORT_FROM_CODE(data[0]);
1668 function = TIUMP_GET_FUNC_FROM_CODE(data[0]);
1669 dbg("%s - port_number %d, function %d, info 0x%x",
1670 __func__, port_number, function, data[1]);
1671 port = edge_serial->serial->port[port_number];
1672 edge_port = usb_get_serial_port_data(port);
1674 dbg("%s - edge_port not found", __func__);
1678 case TIUMP_INTERRUPT_CODE_LSR:
1679 lsr = map_line_status(data[1]);
1680 if (lsr & UMP_UART_LSR_DATA_MASK) {
1681 /* Save the LSR event for bulk read
1682 completion routine */
1683 dbg("%s - LSR Event Port %u LSR Status = %02x",
1684 __func__, port_number, lsr);
1685 edge_port->lsr_event = 1;
1686 edge_port->lsr_mask = lsr;
1688 dbg("%s - ===== Port %d LSR Status = %02x ======",
1689 __func__, port_number, lsr);
1690 handle_new_lsr(edge_port, 0, lsr, 0);
1694 case TIUMP_INTERRUPT_CODE_MSR: /* MSR */
1695 /* Copy MSR from UMP */
1697 dbg("%s - ===== Port %u MSR Status = %02x ======",
1698 __func__, port_number, msr);
1699 handle_new_msr(edge_port, msr);
1703 dev_err(&urb->dev->dev,
1704 "%s - Unknown Interrupt code from UMP %x\n",
1711 retval = usb_submit_urb(urb, GFP_ATOMIC);
1713 dev_err(&urb->dev->dev,
1714 "%s - usb_submit_urb failed with result %d\n",
1718 static void edge_bulk_in_callback(struct urb *urb)
1720 struct edgeport_port *edge_port = urb->context;
1721 unsigned char *data = urb->transfer_buffer;
1722 struct tty_struct *tty;
1725 int status = urb->status;
1727 dbg("%s", __func__);
1736 /* this urb is terminated, clean up */
1737 dbg("%s - urb shutting down with status: %d",
1741 dev_err(&urb->dev->dev,
1742 "%s - nonzero read bulk status received: %d\n",
1746 if (status == -EPIPE)
1750 dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__);
1754 port_number = edge_port->port->number - edge_port->port->serial->minor;
1756 if (edge_port->lsr_event) {
1757 edge_port->lsr_event = 0;
1758 dbg("%s ===== Port %u LSR Status = %02x, Data = %02x ======",
1759 __func__, port_number, edge_port->lsr_mask, *data);
1760 handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data);
1761 /* Adjust buffer length/pointer */
1762 --urb->actual_length;
1766 tty = tty_port_tty_get(&edge_port->port->port);
1767 if (tty && urb->actual_length) {
1768 usb_serial_debug_data(debug, &edge_port->port->dev,
1769 __func__, urb->actual_length, data);
1770 if (edge_port->close_pending)
1771 dbg("%s - close pending, dropping data on the floor",
1774 edge_tty_recv(&edge_port->port->dev, tty, data,
1775 urb->actual_length);
1776 edge_port->icount.rx += urb->actual_length;
1781 /* continue read unless stopped */
1782 spin_lock(&edge_port->ep_lock);
1783 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) {
1784 urb->dev = edge_port->port->serial->dev;
1785 retval = usb_submit_urb(urb, GFP_ATOMIC);
1786 } else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING) {
1787 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED;
1789 spin_unlock(&edge_port->ep_lock);
1791 dev_err(&urb->dev->dev,
1792 "%s - usb_submit_urb failed with result %d\n",
1796 static void edge_tty_recv(struct device *dev, struct tty_struct *tty,
1797 unsigned char *data, int length)
1801 queued = tty_insert_flip_string(tty, data, length);
1802 if (queued < length)
1803 dev_err(dev, "%s - dropping data, %d bytes lost\n",
1804 __func__, length - queued);
1805 tty_flip_buffer_push(tty);
1808 static void edge_bulk_out_callback(struct urb *urb)
1810 struct usb_serial_port *port = urb->context;
1811 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1812 int status = urb->status;
1813 struct tty_struct *tty;
1815 dbg("%s - port %d", __func__, port->number);
1817 edge_port->ep_write_urb_in_use = 0;
1826 /* this urb is terminated, clean up */
1827 dbg("%s - urb shutting down with status: %d",
1831 dev_err(&urb->dev->dev, "%s - nonzero write bulk status "
1832 "received: %d\n", __func__, status);
1835 /* send any buffered data */
1836 tty = tty_port_tty_get(&port->port);
1841 static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
1843 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1844 struct edgeport_serial *edge_serial;
1845 struct usb_device *dev;
1850 u8 transaction_timeout;
1852 dbg("%s - port %d", __func__, port->number);
1854 if (edge_port == NULL)
1857 port_number = port->number - port->serial->minor;
1858 switch (port_number) {
1860 edge_port->uart_base = UMPMEM_BASE_UART1;
1861 edge_port->dma_address = UMPD_OEDB1_ADDRESS;
1864 edge_port->uart_base = UMPMEM_BASE_UART2;
1865 edge_port->dma_address = UMPD_OEDB2_ADDRESS;
1868 dev_err(&port->dev, "Unknown port number!!!\n");
1872 dbg("%s - port_number = %d, uart_base = %04x, dma_address = %04x",
1873 __func__, port_number, edge_port->uart_base,
1874 edge_port->dma_address);
1876 dev = port->serial->dev;
1878 memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount));
1879 init_waitqueue_head(&edge_port->delta_msr_wait);
1881 /* turn off loopback */
1882 status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0);
1885 "%s - cannot send clear loopback command, %d\n",
1890 /* set up the port settings */
1892 edge_set_termios(tty, port, tty->termios);
1894 /* open up the port */
1896 /* milliseconds to timeout for DMA transfer */
1897 transaction_timeout = 2;
1899 edge_port->ump_read_timeout =
1900 max(20, ((transaction_timeout * 3) / 2));
1902 /* milliseconds to timeout for DMA transfer */
1903 open_settings = (u8)(UMP_DMA_MODE_CONTINOUS |
1904 UMP_PIPE_TRANS_TIMEOUT_ENA |
1905 (transaction_timeout << 2));
1907 dbg("%s - Sending UMPC_OPEN_PORT", __func__);
1909 /* Tell TI to open and start the port */
1910 status = send_cmd(dev, UMPC_OPEN_PORT,
1911 (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0);
1913 dev_err(&port->dev, "%s - cannot send open command, %d\n",
1918 /* Start the DMA? */
1919 status = send_cmd(dev, UMPC_START_PORT,
1920 (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0);
1922 dev_err(&port->dev, "%s - cannot send start DMA command, %d\n",
1927 /* Clear TX and RX buffers in UMP */
1928 status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN);
1931 "%s - cannot send clear buffers command, %d\n",
1936 /* Read Initial MSR */
1937 status = ti_vread_sync(dev, UMPC_READ_MSR, 0,
1938 (__u16)(UMPM_UART1_PORT + port_number),
1939 &edge_port->shadow_msr, 1);
1941 dev_err(&port->dev, "%s - cannot send read MSR command, %d\n",
1946 dbg("ShadowMSR 0x%X", edge_port->shadow_msr);
1948 /* Set Initial MCR */
1949 edge_port->shadow_mcr = MCR_RTS | MCR_DTR;
1950 dbg("ShadowMCR 0x%X", edge_port->shadow_mcr);
1952 edge_serial = edge_port->edge_serial;
1953 if (mutex_lock_interruptible(&edge_serial->es_lock))
1954 return -ERESTARTSYS;
1955 if (edge_serial->num_ports_open == 0) {
1956 /* we are the first port to open, post the interrupt urb */
1957 urb = edge_serial->serial->port[0]->interrupt_in_urb;
1960 "%s - no interrupt urb present, exiting\n",
1963 goto release_es_lock;
1965 urb->complete = edge_interrupt_callback;
1966 urb->context = edge_serial;
1968 status = usb_submit_urb(urb, GFP_KERNEL);
1971 "%s - usb_submit_urb failed with value %d\n",
1973 goto release_es_lock;
1978 * reset the data toggle on the bulk endpoints to work around bug in
1979 * host controllers where things get out of sync some times
1981 usb_clear_halt(dev, port->write_urb->pipe);
1982 usb_clear_halt(dev, port->read_urb->pipe);
1984 /* start up our bulk read urb */
1985 urb = port->read_urb;
1987 dev_err(&port->dev, "%s - no read urb present, exiting\n",
1990 goto unlink_int_urb;
1992 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
1993 urb->complete = edge_bulk_in_callback;
1994 urb->context = edge_port;
1996 status = usb_submit_urb(urb, GFP_KERNEL);
1999 "%s - read bulk usb_submit_urb failed with value %d\n",
2001 goto unlink_int_urb;
2004 ++edge_serial->num_ports_open;
2006 dbg("%s - exited", __func__);
2008 goto release_es_lock;
2011 if (edge_port->edge_serial->num_ports_open == 0)
2012 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
2014 mutex_unlock(&edge_serial->es_lock);
2018 static void edge_close(struct usb_serial_port *port)
2020 struct edgeport_serial *edge_serial;
2021 struct edgeport_port *edge_port;
2025 dbg("%s - port %d", __func__, port->number);
2027 edge_serial = usb_get_serial_data(port->serial);
2028 edge_port = usb_get_serial_port_data(port);
2029 if (edge_serial == NULL || edge_port == NULL)
2032 /* The bulkreadcompletion routine will check
2033 * this flag and dump add read data */
2034 edge_port->close_pending = 1;
2036 /* chase the port close and flush */
2037 chase_port(edge_port, (HZ * closing_wait) / 100, 1);
2039 usb_kill_urb(port->read_urb);
2040 usb_kill_urb(port->write_urb);
2041 edge_port->ep_write_urb_in_use = 0;
2043 /* assuming we can still talk to the device,
2044 * send a close port command to it */
2045 dbg("%s - send umpc_close_port", __func__);
2046 port_number = port->number - port->serial->minor;
2047 status = send_cmd(port->serial->dev,
2049 (__u8)(UMPM_UART1_PORT + port_number),
2053 mutex_lock(&edge_serial->es_lock);
2054 --edge_port->edge_serial->num_ports_open;
2055 if (edge_port->edge_serial->num_ports_open <= 0) {
2056 /* last port is now closed, let's shut down our interrupt urb */
2057 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
2058 edge_port->edge_serial->num_ports_open = 0;
2060 mutex_unlock(&edge_serial->es_lock);
2061 edge_port->close_pending = 0;
2063 dbg("%s - exited", __func__);
2066 static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
2067 const unsigned char *data, int count)
2069 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2071 dbg("%s - port %d", __func__, port->number);
2074 dbg("%s - write request of 0 bytes", __func__);
2078 if (edge_port == NULL)
2080 if (edge_port->close_pending == 1)
2083 count = kfifo_in_locked(&edge_port->write_fifo, data, count,
2084 &edge_port->ep_lock);
2090 static void edge_send(struct tty_struct *tty)
2092 struct usb_serial_port *port = tty->driver_data;
2094 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2095 unsigned long flags;
2098 dbg("%s - port %d", __func__, port->number);
2100 spin_lock_irqsave(&edge_port->ep_lock, flags);
2102 if (edge_port->ep_write_urb_in_use) {
2103 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2107 count = kfifo_out(&edge_port->write_fifo,
2108 port->write_urb->transfer_buffer,
2109 port->bulk_out_size);
2112 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2116 edge_port->ep_write_urb_in_use = 1;
2118 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2120 usb_serial_debug_data(debug, &port->dev, __func__, count,
2121 port->write_urb->transfer_buffer);
2123 /* set up our urb */
2124 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
2125 usb_sndbulkpipe(port->serial->dev,
2126 port->bulk_out_endpointAddress),
2127 port->write_urb->transfer_buffer, count,
2128 edge_bulk_out_callback,
2131 /* send the data out the bulk port */
2132 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
2135 "%s - failed submitting write urb, error %d\n",
2137 edge_port->ep_write_urb_in_use = 0;
2138 /* TODO: reschedule edge_send */
2140 edge_port->icount.tx += count;
2142 /* wakeup any process waiting for writes to complete */
2143 /* there is now more room in the buffer for new writes */
2148 static int edge_write_room(struct tty_struct *tty)
2150 struct usb_serial_port *port = tty->driver_data;
2151 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2153 unsigned long flags;
2155 dbg("%s - port %d", __func__, port->number);
2157 if (edge_port == NULL)
2159 if (edge_port->close_pending == 1)
2162 spin_lock_irqsave(&edge_port->ep_lock, flags);
2163 room = kfifo_avail(&edge_port->write_fifo);
2164 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2166 dbg("%s - returns %d", __func__, room);
2170 static int edge_chars_in_buffer(struct tty_struct *tty)
2172 struct usb_serial_port *port = tty->driver_data;
2173 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2175 unsigned long flags;
2177 dbg("%s - port %d", __func__, port->number);
2179 if (edge_port == NULL)
2181 if (edge_port->close_pending == 1)
2184 spin_lock_irqsave(&edge_port->ep_lock, flags);
2185 chars = kfifo_len(&edge_port->write_fifo);
2186 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2188 dbg("%s - returns %d", __func__, chars);
2192 static void edge_throttle(struct tty_struct *tty)
2194 struct usb_serial_port *port = tty->driver_data;
2195 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2198 dbg("%s - port %d", __func__, port->number);
2200 if (edge_port == NULL)
2203 /* if we are implementing XON/XOFF, send the stop character */
2205 unsigned char stop_char = STOP_CHAR(tty);
2206 status = edge_write(tty, port, &stop_char, 1);
2208 dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status);
2212 /* if we are implementing RTS/CTS, stop reads */
2213 /* and the Edgeport will clear the RTS line */
2215 stop_read(edge_port);
2219 static void edge_unthrottle(struct tty_struct *tty)
2221 struct usb_serial_port *port = tty->driver_data;
2222 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2225 dbg("%s - port %d", __func__, port->number);
2227 if (edge_port == NULL)
2230 /* if we are implementing XON/XOFF, send the start character */
2232 unsigned char start_char = START_CHAR(tty);
2233 status = edge_write(tty, port, &start_char, 1);
2235 dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status);
2238 /* if we are implementing RTS/CTS, restart reads */
2239 /* are the Edgeport will assert the RTS line */
2240 if (C_CRTSCTS(tty)) {
2241 status = restart_read(edge_port);
2244 "%s - read bulk usb_submit_urb failed: %d\n",
2250 static void stop_read(struct edgeport_port *edge_port)
2252 unsigned long flags;
2254 spin_lock_irqsave(&edge_port->ep_lock, flags);
2256 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
2257 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING;
2258 edge_port->shadow_mcr &= ~MCR_RTS;
2260 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2263 static int restart_read(struct edgeport_port *edge_port)
2267 unsigned long flags;
2269 spin_lock_irqsave(&edge_port->ep_lock, flags);
2271 if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) {
2272 urb = edge_port->port->read_urb;
2273 urb->complete = edge_bulk_in_callback;
2274 urb->context = edge_port;
2275 urb->dev = edge_port->port->serial->dev;
2276 status = usb_submit_urb(urb, GFP_ATOMIC);
2278 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
2279 edge_port->shadow_mcr |= MCR_RTS;
2281 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2286 static void change_port_settings(struct tty_struct *tty,
2287 struct edgeport_port *edge_port, struct ktermios *old_termios)
2289 struct ump_uart_config *config;
2293 int port_number = edge_port->port->number -
2294 edge_port->port->serial->minor;
2296 dbg("%s - port %d", __func__, edge_port->port->number);
2298 config = kmalloc (sizeof (*config), GFP_KERNEL);
2300 *tty->termios = *old_termios;
2301 dev_err(&edge_port->port->dev, "%s - out of memory\n",
2306 cflag = tty->termios->c_cflag;
2310 /* These flags must be set */
2311 config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT;
2312 config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR;
2313 config->bUartMode = (__u8)(edge_port->bUartMode);
2315 switch (cflag & CSIZE) {
2317 config->bDataBits = UMP_UART_CHAR5BITS;
2318 dbg("%s - data bits = 5", __func__);
2321 config->bDataBits = UMP_UART_CHAR6BITS;
2322 dbg("%s - data bits = 6", __func__);
2325 config->bDataBits = UMP_UART_CHAR7BITS;
2326 dbg("%s - data bits = 7", __func__);
2330 config->bDataBits = UMP_UART_CHAR8BITS;
2331 dbg("%s - data bits = 8", __func__);
2335 if (cflag & PARENB) {
2336 if (cflag & PARODD) {
2337 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2338 config->bParity = UMP_UART_ODDPARITY;
2339 dbg("%s - parity = odd", __func__);
2341 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2342 config->bParity = UMP_UART_EVENPARITY;
2343 dbg("%s - parity = even", __func__);
2346 config->bParity = UMP_UART_NOPARITY;
2347 dbg("%s - parity = none", __func__);
2350 if (cflag & CSTOPB) {
2351 config->bStopBits = UMP_UART_STOPBIT2;
2352 dbg("%s - stop bits = 2", __func__);
2354 config->bStopBits = UMP_UART_STOPBIT1;
2355 dbg("%s - stop bits = 1", __func__);
2358 /* figure out the flow control settings */
2359 if (cflag & CRTSCTS) {
2360 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW;
2361 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW;
2362 dbg("%s - RTS/CTS is enabled", __func__);
2364 dbg("%s - RTS/CTS is disabled", __func__);
2365 tty->hw_stopped = 0;
2366 restart_read(edge_port);
2369 /* if we are implementing XON/XOFF, set the start and stop
2370 character in the device */
2371 config->cXon = START_CHAR(tty);
2372 config->cXoff = STOP_CHAR(tty);
2374 /* if we are implementing INBOUND XON/XOFF */
2376 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X;
2377 dbg("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
2378 __func__, config->cXon, config->cXoff);
2380 dbg("%s - INBOUND XON/XOFF is disabled", __func__);
2382 /* if we are implementing OUTBOUND XON/XOFF */
2384 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X;
2385 dbg("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
2386 __func__, config->cXon, config->cXoff);
2388 dbg("%s - OUTBOUND XON/XOFF is disabled", __func__);
2390 tty->termios->c_cflag &= ~CMSPAR;
2392 /* Round the baud rate */
2393 baud = tty_get_baud_rate(tty);
2395 /* pick a default, any default... */
2398 tty_encode_baud_rate(tty, baud, baud);
2400 edge_port->baud_rate = baud;
2401 config->wBaudRate = (__u16)((461550L + baud/2) / baud);
2403 /* FIXME: Recompute actual baud from divisor here */
2405 dbg("%s - baud rate = %d, wBaudRate = %d", __func__, baud,
2408 dbg("wBaudRate: %d", (int)(461550L / config->wBaudRate));
2409 dbg("wFlags: 0x%x", config->wFlags);
2410 dbg("bDataBits: %d", config->bDataBits);
2411 dbg("bParity: %d", config->bParity);
2412 dbg("bStopBits: %d", config->bStopBits);
2413 dbg("cXon: %d", config->cXon);
2414 dbg("cXoff: %d", config->cXoff);
2415 dbg("bUartMode: %d", config->bUartMode);
2417 /* move the word values into big endian mode */
2418 cpu_to_be16s(&config->wFlags);
2419 cpu_to_be16s(&config->wBaudRate);
2421 status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG,
2422 (__u8)(UMPM_UART1_PORT + port_number),
2423 0, (__u8 *)config, sizeof(*config));
2425 dbg("%s - error %d when trying to write config to device",
2430 static void edge_set_termios(struct tty_struct *tty,
2431 struct usb_serial_port *port, struct ktermios *old_termios)
2433 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2436 cflag = tty->termios->c_cflag;
2438 dbg("%s - clfag %08x iflag %08x", __func__,
2439 tty->termios->c_cflag, tty->termios->c_iflag);
2440 dbg("%s - old clfag %08x old iflag %08x", __func__,
2441 old_termios->c_cflag, old_termios->c_iflag);
2442 dbg("%s - port %d", __func__, port->number);
2444 if (edge_port == NULL)
2446 /* change the port settings to the new ones specified */
2447 change_port_settings(tty, edge_port, old_termios);
2450 static int edge_tiocmset(struct tty_struct *tty,
2451 unsigned int set, unsigned int clear)
2453 struct usb_serial_port *port = tty->driver_data;
2454 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2456 unsigned long flags;
2458 dbg("%s - port %d", __func__, port->number);
2460 spin_lock_irqsave(&edge_port->ep_lock, flags);
2461 mcr = edge_port->shadow_mcr;
2462 if (set & TIOCM_RTS)
2464 if (set & TIOCM_DTR)
2466 if (set & TIOCM_LOOP)
2467 mcr |= MCR_LOOPBACK;
2469 if (clear & TIOCM_RTS)
2471 if (clear & TIOCM_DTR)
2473 if (clear & TIOCM_LOOP)
2474 mcr &= ~MCR_LOOPBACK;
2476 edge_port->shadow_mcr = mcr;
2477 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2479 restore_mcr(edge_port, mcr);
2483 static int edge_tiocmget(struct tty_struct *tty)
2485 struct usb_serial_port *port = tty->driver_data;
2486 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2487 unsigned int result = 0;
2490 unsigned long flags;
2492 dbg("%s - port %d", __func__, port->number);
2494 spin_lock_irqsave(&edge_port->ep_lock, flags);
2496 msr = edge_port->shadow_msr;
2497 mcr = edge_port->shadow_mcr;
2498 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */
2499 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */
2500 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */
2501 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */
2502 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */
2503 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */
2506 dbg("%s -- %x", __func__, result);
2507 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2512 static int edge_get_icount(struct tty_struct *tty,
2513 struct serial_icounter_struct *icount)
2515 struct usb_serial_port *port = tty->driver_data;
2516 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2517 struct async_icount *ic = &edge_port->icount;
2519 icount->cts = ic->cts;
2520 icount->dsr = ic->dsr;
2521 icount->rng = ic->rng;
2522 icount->dcd = ic->dcd;
2523 icount->tx = ic->tx;
2524 icount->rx = ic->rx;
2525 icount->frame = ic->frame;
2526 icount->parity = ic->parity;
2527 icount->overrun = ic->overrun;
2528 icount->brk = ic->brk;
2529 icount->buf_overrun = ic->buf_overrun;
2533 static int get_serial_info(struct edgeport_port *edge_port,
2534 struct serial_struct __user *retinfo)
2536 struct serial_struct tmp;
2541 memset(&tmp, 0, sizeof(tmp));
2543 tmp.type = PORT_16550A;
2544 tmp.line = edge_port->port->serial->minor;
2545 tmp.port = edge_port->port->number;
2547 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
2548 tmp.xmit_fifo_size = edge_port->port->bulk_out_size;
2549 tmp.baud_base = 9600;
2550 tmp.close_delay = 5*HZ;
2551 tmp.closing_wait = closing_wait;
2553 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2558 static int edge_ioctl(struct tty_struct *tty,
2559 unsigned int cmd, unsigned long arg)
2561 struct usb_serial_port *port = tty->driver_data;
2562 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2563 struct async_icount cnow;
2564 struct async_icount cprev;
2566 dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd);
2570 dbg("%s - (%d) TIOCGSERIAL", __func__, port->number);
2571 return get_serial_info(edge_port,
2572 (struct serial_struct __user *) arg);
2574 dbg("%s - (%d) TIOCMIWAIT", __func__, port->number);
2575 cprev = edge_port->icount;
2577 interruptible_sleep_on(&edge_port->delta_msr_wait);
2578 /* see if a signal did it */
2579 if (signal_pending(current))
2580 return -ERESTARTSYS;
2581 cnow = edge_port->icount;
2582 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
2583 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
2584 return -EIO; /* no change => error */
2585 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
2586 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
2587 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
2588 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) {
2596 return -ENOIOCTLCMD;
2599 static void edge_break(struct tty_struct *tty, int break_state)
2601 struct usb_serial_port *port = tty->driver_data;
2602 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2604 int bv = 0; /* Off */
2606 dbg("%s - state = %d", __func__, break_state);
2608 /* chase the port close */
2609 chase_port(edge_port, 0, 0);
2611 if (break_state == -1)
2613 status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv);
2615 dbg("%s - error %d sending break set/clear command.",
2619 static int edge_startup(struct usb_serial *serial)
2621 struct edgeport_serial *edge_serial;
2622 struct edgeport_port *edge_port;
2623 struct usb_device *dev;
2629 /* create our private serial structure */
2630 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
2631 if (edge_serial == NULL) {
2632 dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__);
2635 mutex_init(&edge_serial->es_lock);
2636 edge_serial->serial = serial;
2637 usb_set_serial_data(serial, edge_serial);
2639 status = download_fw(edge_serial);
2645 /* set up our port private structures */
2646 for (i = 0; i < serial->num_ports; ++i) {
2647 edge_port = kzalloc(sizeof(struct edgeport_port), GFP_KERNEL);
2648 if (edge_port == NULL) {
2649 dev_err(&serial->dev->dev, "%s - Out of memory\n",
2653 spin_lock_init(&edge_port->ep_lock);
2654 if (kfifo_alloc(&edge_port->write_fifo, EDGE_OUT_BUF_SIZE,
2656 dev_err(&serial->dev->dev, "%s - Out of memory\n",
2661 edge_port->port = serial->port[i];
2662 edge_port->edge_serial = edge_serial;
2663 usb_set_serial_port_data(serial->port[i], edge_port);
2664 edge_port->bUartMode = default_uart_mode;
2670 for (--i; i >= 0; --i) {
2671 edge_port = usb_get_serial_port_data(serial->port[i]);
2672 kfifo_free(&edge_port->write_fifo);
2674 usb_set_serial_port_data(serial->port[i], NULL);
2677 usb_set_serial_data(serial, NULL);
2681 static void edge_disconnect(struct usb_serial *serial)
2683 dbg("%s", __func__);
2686 static void edge_release(struct usb_serial *serial)
2689 struct edgeport_port *edge_port;
2691 dbg("%s", __func__);
2693 for (i = 0; i < serial->num_ports; ++i) {
2694 edge_port = usb_get_serial_port_data(serial->port[i]);
2695 kfifo_free(&edge_port->write_fifo);
2698 kfree(usb_get_serial_data(serial));
2702 /* Sysfs Attributes */
2704 static ssize_t show_uart_mode(struct device *dev,
2705 struct device_attribute *attr, char *buf)
2707 struct usb_serial_port *port = to_usb_serial_port(dev);
2708 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2710 return sprintf(buf, "%d\n", edge_port->bUartMode);
2713 static ssize_t store_uart_mode(struct device *dev,
2714 struct device_attribute *attr, const char *valbuf, size_t count)
2716 struct usb_serial_port *port = to_usb_serial_port(dev);
2717 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2718 unsigned int v = simple_strtoul(valbuf, NULL, 0);
2720 dbg("%s: setting uart_mode = %d", __func__, v);
2723 edge_port->bUartMode = v;
2725 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v);
2730 static DEVICE_ATTR(uart_mode, S_IWUSR | S_IRUGO, show_uart_mode,
2733 static int edge_create_sysfs_attrs(struct usb_serial_port *port)
2735 return device_create_file(&port->dev, &dev_attr_uart_mode);
2738 static int edge_remove_sysfs_attrs(struct usb_serial_port *port)
2740 device_remove_file(&port->dev, &dev_attr_uart_mode);
2745 static struct usb_serial_driver edgeport_1port_device = {
2747 .owner = THIS_MODULE,
2748 .name = "edgeport_ti_1",
2750 .description = "Edgeport TI 1 port adapter",
2751 .usb_driver = &io_driver,
2752 .id_table = edgeport_1port_id_table,
2755 .close = edge_close,
2756 .throttle = edge_throttle,
2757 .unthrottle = edge_unthrottle,
2758 .attach = edge_startup,
2759 .disconnect = edge_disconnect,
2760 .release = edge_release,
2761 .port_probe = edge_create_sysfs_attrs,
2762 .port_remove = edge_remove_sysfs_attrs,
2763 .ioctl = edge_ioctl,
2764 .set_termios = edge_set_termios,
2765 .tiocmget = edge_tiocmget,
2766 .tiocmset = edge_tiocmset,
2767 .get_icount = edge_get_icount,
2768 .write = edge_write,
2769 .write_room = edge_write_room,
2770 .chars_in_buffer = edge_chars_in_buffer,
2771 .break_ctl = edge_break,
2772 .read_int_callback = edge_interrupt_callback,
2773 .read_bulk_callback = edge_bulk_in_callback,
2774 .write_bulk_callback = edge_bulk_out_callback,
2777 static struct usb_serial_driver edgeport_2port_device = {
2779 .owner = THIS_MODULE,
2780 .name = "edgeport_ti_2",
2782 .description = "Edgeport TI 2 port adapter",
2783 .usb_driver = &io_driver,
2784 .id_table = edgeport_2port_id_table,
2787 .close = edge_close,
2788 .throttle = edge_throttle,
2789 .unthrottle = edge_unthrottle,
2790 .attach = edge_startup,
2791 .disconnect = edge_disconnect,
2792 .release = edge_release,
2793 .port_probe = edge_create_sysfs_attrs,
2794 .port_remove = edge_remove_sysfs_attrs,
2795 .ioctl = edge_ioctl,
2796 .set_termios = edge_set_termios,
2797 .tiocmget = edge_tiocmget,
2798 .tiocmset = edge_tiocmset,
2799 .write = edge_write,
2800 .write_room = edge_write_room,
2801 .chars_in_buffer = edge_chars_in_buffer,
2802 .break_ctl = edge_break,
2803 .read_int_callback = edge_interrupt_callback,
2804 .read_bulk_callback = edge_bulk_in_callback,
2805 .write_bulk_callback = edge_bulk_out_callback,
2809 static int __init edgeport_init(void)
2812 retval = usb_serial_register(&edgeport_1port_device);
2814 goto failed_1port_device_register;
2815 retval = usb_serial_register(&edgeport_2port_device);
2817 goto failed_2port_device_register;
2818 retval = usb_register(&io_driver);
2820 goto failed_usb_register;
2821 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
2824 failed_usb_register:
2825 usb_serial_deregister(&edgeport_2port_device);
2826 failed_2port_device_register:
2827 usb_serial_deregister(&edgeport_1port_device);
2828 failed_1port_device_register:
2832 static void __exit edgeport_exit(void)
2834 usb_deregister(&io_driver);
2835 usb_serial_deregister(&edgeport_1port_device);
2836 usb_serial_deregister(&edgeport_2port_device);
2839 module_init(edgeport_init);
2840 module_exit(edgeport_exit);
2842 /* Module information */
2843 MODULE_AUTHOR(DRIVER_AUTHOR);
2844 MODULE_DESCRIPTION(DRIVER_DESC);
2845 MODULE_LICENSE("GPL");
2846 MODULE_FIRMWARE("edgeport/down3.bin");
2848 module_param(debug, bool, S_IRUGO | S_IWUSR);
2849 MODULE_PARM_DESC(debug, "Debug enabled or not");
2851 module_param(closing_wait, int, S_IRUGO | S_IWUSR);
2852 MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs");
2854 module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR);
2855 MODULE_PARM_DESC(ignore_cpu_rev,
2856 "Ignore the cpu revision when connecting to a device");
2858 module_param(default_uart_mode, int, S_IRUGO | S_IWUSR);
2859 MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ...");