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 device *dev, struct tty_struct *tty,
205 unsigned char *data, int length);
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 void chase_port(struct edgeport_port *port, unsigned long timeout,
528 struct tty_struct *tty = tty_port_tty_get(&port->port->port);
529 struct usb_serial *serial = port->port->serial;
534 timeout = (HZ * EDGE_CLOSING_WAIT)/100;
536 /* wait for data to drain from the buffer */
537 spin_lock_irqsave(&port->ep_lock, flags);
538 init_waitqueue_entry(&wait, current);
539 add_wait_queue(&tty->write_wait, &wait);
541 set_current_state(TASK_INTERRUPTIBLE);
542 if (kfifo_len(&port->write_fifo) == 0
543 || timeout == 0 || signal_pending(current)
544 || serial->disconnected)
547 spin_unlock_irqrestore(&port->ep_lock, flags);
548 timeout = schedule_timeout(timeout);
549 spin_lock_irqsave(&port->ep_lock, flags);
551 set_current_state(TASK_RUNNING);
552 remove_wait_queue(&tty->write_wait, &wait);
554 kfifo_reset_out(&port->write_fifo);
555 spin_unlock_irqrestore(&port->ep_lock, flags);
558 /* wait for data to drain from the device */
560 while ((long)(jiffies - timeout) < 0 && !signal_pending(current)
561 && !serial->disconnected) {
562 /* not disconnected */
563 if (!tx_active(port))
569 if (serial->disconnected)
572 /* wait one more character time, based on baud rate */
573 /* (tx_active doesn't seem to wait for the last byte) */
574 baud_rate = port->baud_rate;
577 msleep(max(1, DIV_ROUND_UP(10000, baud_rate)));
580 static int choose_config(struct usb_device *dev)
583 * There may be multiple configurations on this device, in which case
584 * we would need to read and parse all of them to find out which one
585 * we want. However, we just support one config at this point,
586 * configuration # 1, which is Config Descriptor 0.
589 dev_dbg(&dev->dev, "%s - Number of Interfaces = %d\n",
590 __func__, dev->config->desc.bNumInterfaces);
591 dev_dbg(&dev->dev, "%s - MAX Power = %d\n",
592 __func__, dev->config->desc.bMaxPower * 2);
594 if (dev->config->desc.bNumInterfaces != 1) {
595 dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", __func__);
602 static int read_rom(struct edgeport_serial *serial,
603 int start_address, int length, __u8 *buffer)
607 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
608 status = read_download_mem(serial->serial->dev,
614 status = read_boot_mem(serial, start_address, length,
620 static int write_rom(struct edgeport_serial *serial, int start_address,
621 int length, __u8 *buffer)
623 if (serial->product_info.TiMode == TI_MODE_BOOT)
624 return write_boot_mem(serial, start_address, length,
627 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD)
628 return write_i2c_mem(serial, start_address, length,
629 serial->TI_I2C_Type, buffer);
635 /* Read a descriptor header from I2C based on type */
636 static int get_descriptor_addr(struct edgeport_serial *serial,
637 int desc_type, struct ti_i2c_desc *rom_desc)
642 /* Search for requested descriptor in I2C */
645 status = read_rom(serial,
647 sizeof(struct ti_i2c_desc),
652 if (rom_desc->Type == desc_type)
653 return start_address;
655 start_address = start_address + sizeof(struct ti_i2c_desc)
658 } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type);
663 /* Validate descriptor checksum */
664 static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer)
669 for (i = 0; i < rom_desc->Size; i++)
670 cs = (__u8)(cs + buffer[i]);
672 if (cs != rom_desc->CheckSum) {
673 pr_debug("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs);
679 /* Make sure that the I2C image is good */
680 static int check_i2c_image(struct edgeport_serial *serial)
682 struct device *dev = &serial->serial->dev->dev;
684 struct ti_i2c_desc *rom_desc;
685 int start_address = 2;
689 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
691 dev_err(dev, "%s - out of memory\n", __func__);
694 buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL);
696 dev_err(dev, "%s - out of memory when allocating buffer\n",
702 /* Read the first byte (Signature0) must be 0x52 or 0x10 */
703 status = read_rom(serial, 0, 1, buffer);
707 if (*buffer != UMP5152 && *buffer != UMP3410) {
708 dev_err(dev, "%s - invalid buffer signature\n", __func__);
714 /* Validate the I2C */
715 status = read_rom(serial,
717 sizeof(struct ti_i2c_desc),
722 if ((start_address + sizeof(struct ti_i2c_desc) +
723 rom_desc->Size) > TI_MAX_I2C_SIZE) {
725 dev_dbg(dev, "%s - structure too big, erroring out.\n", __func__);
729 dev_dbg(dev, "%s Type = 0x%x\n", __func__, rom_desc->Type);
731 /* Skip type 2 record */
732 ttype = rom_desc->Type & 0x0f;
733 if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC
734 && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) {
735 /* Read the descriptor data */
736 status = read_rom(serial, start_address +
737 sizeof(struct ti_i2c_desc),
738 rom_desc->Size, buffer);
742 status = valid_csum(rom_desc, buffer);
746 start_address = start_address + sizeof(struct ti_i2c_desc) +
749 } while ((rom_desc->Type != I2C_DESC_TYPE_ION) &&
750 (start_address < TI_MAX_I2C_SIZE));
752 if ((rom_desc->Type != I2C_DESC_TYPE_ION) ||
753 (start_address > TI_MAX_I2C_SIZE))
762 static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer)
766 struct ti_i2c_desc *rom_desc;
767 struct edge_ti_manuf_descriptor *desc;
768 struct device *dev = &serial->serial->dev->dev;
770 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
772 dev_err(dev, "%s - out of memory\n", __func__);
775 start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION,
778 if (!start_address) {
779 dev_dbg(dev, "%s - Edge Descriptor not found in I2C\n", __func__);
784 /* Read the descriptor data */
785 status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc),
786 rom_desc->Size, buffer);
790 status = valid_csum(rom_desc, buffer);
792 desc = (struct edge_ti_manuf_descriptor *)buffer;
793 dev_dbg(dev, "%s - IonConfig 0x%x\n", __func__, desc->IonConfig);
794 dev_dbg(dev, "%s - Version %d\n", __func__, desc->Version);
795 dev_dbg(dev, "%s - Cpu/Board 0x%x\n", __func__, desc->CpuRev_BoardRev);
796 dev_dbg(dev, "%s - NumPorts %d\n", __func__, desc->NumPorts);
797 dev_dbg(dev, "%s - NumVirtualPorts %d\n", __func__, desc->NumVirtualPorts);
798 dev_dbg(dev, "%s - TotalPorts %d\n", __func__, desc->TotalPorts);
805 /* Build firmware header used for firmware update */
806 static int build_i2c_fw_hdr(__u8 *header, struct device *dev)
813 struct ti_i2c_desc *i2c_header;
814 struct ti_i2c_image_header *img_header;
815 struct ti_i2c_firmware_rec *firmware_rec;
816 const struct firmware *fw;
817 const char *fw_name = "edgeport/down3.bin";
819 /* In order to update the I2C firmware we must change the type 2 record
820 * to type 0xF2. This will force the UMP to come up in Boot Mode.
821 * Then while in boot mode, the driver will download the latest
822 * firmware (padded to 15.5k) into the UMP ram. And finally when the
823 * device comes back up in download mode the driver will cause the new
824 * firmware to be copied from the UMP Ram to I2C and the firmware will
825 * update the record type from 0xf2 to 0x02.
828 /* Allocate a 15.5k buffer + 2 bytes for version number
829 * (Firmware Record) */
830 buffer_size = (((1024 * 16) - 512 ) +
831 sizeof(struct ti_i2c_firmware_rec));
833 buffer = kmalloc(buffer_size, GFP_KERNEL);
835 dev_err(dev, "%s - out of memory\n", __func__);
839 // Set entire image of 0xffs
840 memset(buffer, 0xff, buffer_size);
842 err = request_firmware(&fw, fw_name, dev);
844 dev_err(dev, "Failed to load image \"%s\" err %d\n",
850 /* Save Download Version Number */
851 OperationalMajorVersion = fw->data[0];
852 OperationalMinorVersion = fw->data[1];
853 OperationalBuildNumber = fw->data[2] | (fw->data[3] << 8);
855 /* Copy version number into firmware record */
856 firmware_rec = (struct ti_i2c_firmware_rec *)buffer;
858 firmware_rec->Ver_Major = OperationalMajorVersion;
859 firmware_rec->Ver_Minor = OperationalMinorVersion;
861 /* Pointer to fw_down memory image */
862 img_header = (struct ti_i2c_image_header *)&fw->data[4];
864 memcpy(buffer + sizeof(struct ti_i2c_firmware_rec),
865 &fw->data[4 + sizeof(struct ti_i2c_image_header)],
866 le16_to_cpu(img_header->Length));
868 release_firmware(fw);
870 for (i=0; i < buffer_size; i++) {
871 cs = (__u8)(cs + buffer[i]);
876 /* Build new header */
877 i2c_header = (struct ti_i2c_desc *)header;
878 firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data;
880 i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK;
881 i2c_header->Size = (__u16)buffer_size;
882 i2c_header->CheckSum = cs;
883 firmware_rec->Ver_Major = OperationalMajorVersion;
884 firmware_rec->Ver_Minor = OperationalMinorVersion;
889 /* Try to figure out what type of I2c we have */
890 static int i2c_type_bootmode(struct edgeport_serial *serial)
892 struct device *dev = &serial->serial->dev->dev;
896 data = kmalloc(1, GFP_KERNEL);
898 dev_err(dev, "%s - out of memory\n", __func__);
902 /* Try to read type 2 */
903 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
904 DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01);
906 dev_dbg(dev, "%s - read 2 status error = %d\n", __func__, status);
908 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data);
909 if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
910 dev_dbg(dev, "%s - ROM_TYPE_II\n", __func__);
911 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
915 /* Try to read type 3 */
916 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
917 DTK_ADDR_SPACE_I2C_TYPE_III, 0, data, 0x01);
919 dev_dbg(dev, "%s - read 3 status error = %d\n", __func__, status);
921 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data);
922 if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
923 dev_dbg(dev, "%s - ROM_TYPE_III\n", __func__);
924 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III;
928 dev_dbg(dev, "%s - Unknown\n", __func__);
929 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
936 static int bulk_xfer(struct usb_serial *serial, void *buffer,
937 int length, int *num_sent)
941 status = usb_bulk_msg(serial->dev,
942 usb_sndbulkpipe(serial->dev,
943 serial->port[0]->bulk_out_endpointAddress),
944 buffer, length, num_sent, 1000);
948 /* Download given firmware image to the device (IN BOOT MODE) */
949 static int download_code(struct edgeport_serial *serial, __u8 *image,
957 /* Transfer firmware image */
958 for (pos = 0; pos < image_length; ) {
959 /* Read the next buffer from file */
960 transfer = image_length - pos;
961 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE)
962 transfer = EDGE_FW_BULK_MAX_PACKET_SIZE;
965 status = bulk_xfer(serial->serial, &image[pos],
969 /* Advance buffer pointer */
977 static int config_boot_dev(struct usb_device *dev)
982 static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc)
984 return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev);
988 * DownloadTIFirmware - Download run-time operating firmware to the TI5052
990 * This routine downloads the main operating code into the TI5052, using the
991 * boot code already burned into E2PROM or ROM.
993 static int download_fw(struct edgeport_serial *serial)
995 struct device *dev = &serial->serial->dev->dev;
998 struct edge_ti_manuf_descriptor *ti_manuf_desc;
999 struct usb_interface_descriptor *interface;
1000 int download_cur_ver;
1001 int download_new_ver;
1003 /* This routine is entered by both the BOOT mode and the Download mode
1004 * We can determine which code is running by the reading the config
1005 * descriptor and if we have only one bulk pipe it is in boot mode
1007 serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP;
1009 /* Default to type 2 i2c */
1010 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1012 status = choose_config(serial->serial->dev);
1016 interface = &serial->serial->interface->cur_altsetting->desc;
1018 dev_err(dev, "%s - no interface set, error!\n", __func__);
1023 * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING
1024 * if we have more than one endpoint we are definitely in download
1027 if (interface->bNumEndpoints > 1)
1028 serial->product_info.TiMode = TI_MODE_DOWNLOAD;
1030 /* Otherwise we will remain in configuring mode */
1031 serial->product_info.TiMode = TI_MODE_CONFIGURING;
1033 /********************************************************************/
1035 /********************************************************************/
1036 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
1037 struct ti_i2c_desc *rom_desc;
1039 dev_dbg(dev, "%s - RUNNING IN DOWNLOAD MODE\n", __func__);
1041 status = check_i2c_image(serial);
1043 dev_dbg(dev, "%s - DOWNLOAD MODE -- BAD I2C\n", __func__);
1047 /* Validate Hardware version number
1048 * Read Manufacturing Descriptor from TI Based Edgeport
1050 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
1051 if (!ti_manuf_desc) {
1052 dev_err(dev, "%s - out of memory.\n", __func__);
1055 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
1057 kfree(ti_manuf_desc);
1061 /* Check version number of ION descriptor */
1062 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
1063 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n",
1064 __func__, ti_cpu_rev(ti_manuf_desc));
1065 kfree(ti_manuf_desc);
1069 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
1071 dev_err(dev, "%s - out of memory.\n", __func__);
1072 kfree(ti_manuf_desc);
1076 /* Search for type 2 record (firmware record) */
1077 start_address = get_descriptor_addr(serial,
1078 I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc);
1079 if (start_address != 0) {
1080 struct ti_i2c_firmware_rec *firmware_version;
1083 dev_dbg(dev, "%s - Found Type FIRMWARE (Type 2) record\n", __func__);
1085 firmware_version = kmalloc(sizeof(*firmware_version),
1087 if (!firmware_version) {
1088 dev_err(dev, "%s - out of memory.\n", __func__);
1090 kfree(ti_manuf_desc);
1094 /* Validate version number
1095 * Read the descriptor data
1097 status = read_rom(serial, start_address +
1098 sizeof(struct ti_i2c_desc),
1099 sizeof(struct ti_i2c_firmware_rec),
1100 (__u8 *)firmware_version);
1102 kfree(firmware_version);
1104 kfree(ti_manuf_desc);
1108 /* Check version number of download with current
1110 download_cur_ver = (firmware_version->Ver_Major << 8) +
1111 (firmware_version->Ver_Minor);
1112 download_new_ver = (OperationalMajorVersion << 8) +
1113 (OperationalMinorVersion);
1115 dev_dbg(dev, "%s - >> FW Versions Device %d.%d Driver %d.%d\n",
1116 __func__, firmware_version->Ver_Major,
1117 firmware_version->Ver_Minor,
1118 OperationalMajorVersion,
1119 OperationalMinorVersion);
1121 /* Check if we have an old version in the I2C and
1122 update if necessary */
1123 if (download_cur_ver < download_new_ver) {
1124 dev_dbg(dev, "%s - Update I2C dld from %d.%d to %d.%d\n",
1126 firmware_version->Ver_Major,
1127 firmware_version->Ver_Minor,
1128 OperationalMajorVersion,
1129 OperationalMinorVersion);
1131 record = kmalloc(1, GFP_KERNEL);
1133 dev_err(dev, "%s - out of memory.\n",
1135 kfree(firmware_version);
1137 kfree(ti_manuf_desc);
1140 /* In order to update the I2C firmware we must
1141 * change the type 2 record to type 0xF2. This
1142 * will force the UMP to come up in Boot Mode.
1143 * Then while in boot mode, the driver will
1144 * download the latest firmware (padded to
1145 * 15.5k) into the UMP ram. Finally when the
1146 * device comes back up in download mode the
1147 * driver will cause the new firmware to be
1148 * copied from the UMP Ram to I2C and the
1149 * firmware will update the record type from
1152 *record = I2C_DESC_TYPE_FIRMWARE_BLANK;
1154 /* Change the I2C Firmware record type to
1155 0xf2 to trigger an update */
1156 status = write_rom(serial, start_address,
1157 sizeof(*record), record);
1160 kfree(firmware_version);
1162 kfree(ti_manuf_desc);
1166 /* verify the write -- must do this in order
1167 * for write to complete before we do the
1170 status = read_rom(serial,
1176 kfree(firmware_version);
1178 kfree(ti_manuf_desc);
1182 if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) {
1183 dev_err(dev, "%s - error resetting device\n", __func__);
1185 kfree(firmware_version);
1187 kfree(ti_manuf_desc);
1191 dev_dbg(dev, "%s - HARDWARE RESET\n", __func__);
1193 /* Reset UMP -- Back to BOOT MODE */
1194 status = ti_vsend_sync(serial->serial->dev,
1195 UMPC_HARDWARE_RESET,
1198 dev_dbg(dev, "%s - HARDWARE RESET return %d\n", __func__, status);
1200 /* return an error on purpose. */
1202 kfree(firmware_version);
1204 kfree(ti_manuf_desc);
1207 kfree(firmware_version);
1209 /* Search for type 0xF2 record (firmware blank record) */
1210 else if ((start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) {
1211 #define HEADER_SIZE (sizeof(struct ti_i2c_desc) + \
1212 sizeof(struct ti_i2c_firmware_rec))
1216 header = kmalloc(HEADER_SIZE, GFP_KERNEL);
1218 dev_err(dev, "%s - out of memory.\n", __func__);
1220 kfree(ti_manuf_desc);
1224 vheader = kmalloc(HEADER_SIZE, GFP_KERNEL);
1226 dev_err(dev, "%s - out of memory.\n", __func__);
1229 kfree(ti_manuf_desc);
1233 dev_dbg(dev, "%s - Found Type BLANK FIRMWARE (Type F2) record\n", __func__);
1236 * In order to update the I2C firmware we must change
1237 * the type 2 record to type 0xF2. This will force the
1238 * UMP to come up in Boot Mode. Then while in boot
1239 * mode, the driver will download the latest firmware
1240 * (padded to 15.5k) into the UMP ram. Finally when the
1241 * device comes back up in download mode the driver
1242 * will cause the new firmware to be copied from the
1243 * UMP Ram to I2C and the firmware will update the
1244 * record type from 0xf2 to 0x02.
1246 status = build_i2c_fw_hdr(header, dev);
1251 kfree(ti_manuf_desc);
1255 /* Update I2C with type 0xf2 record with correct
1256 size and checksum */
1257 status = write_rom(serial,
1265 kfree(ti_manuf_desc);
1269 /* verify the write -- must do this in order for
1270 write to complete before we do the hardware reset */
1271 status = read_rom(serial, start_address,
1272 HEADER_SIZE, vheader);
1275 dev_dbg(dev, "%s - can't read header back\n", __func__);
1279 kfree(ti_manuf_desc);
1282 if (memcmp(vheader, header, HEADER_SIZE)) {
1283 dev_dbg(dev, "%s - write download record failed\n", __func__);
1287 kfree(ti_manuf_desc);
1294 dev_dbg(dev, "%s - Start firmware update\n", __func__);
1296 /* Tell firmware to copy download image into I2C */
1297 status = ti_vsend_sync(serial->serial->dev,
1298 UMPC_COPY_DNLD_TO_I2C, 0, 0, NULL, 0);
1300 dev_dbg(dev, "%s - Update complete 0x%x\n", __func__, status);
1303 "%s - UMPC_COPY_DNLD_TO_I2C failed\n",
1306 kfree(ti_manuf_desc);
1311 // The device is running the download code
1313 kfree(ti_manuf_desc);
1317 /********************************************************************/
1319 /********************************************************************/
1320 dev_dbg(dev, "%s - RUNNING IN BOOT MODE\n", __func__);
1322 /* Configure the TI device so we can use the BULK pipes for download */
1323 status = config_boot_dev(serial->serial->dev);
1327 if (le16_to_cpu(serial->serial->dev->descriptor.idVendor)
1328 != USB_VENDOR_ID_ION) {
1329 dev_dbg(dev, "%s - VID = 0x%x\n", __func__,
1330 le16_to_cpu(serial->serial->dev->descriptor.idVendor));
1331 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1332 goto stayinbootmode;
1335 /* We have an ION device (I2c Must be programmed)
1336 Determine I2C image type */
1337 if (i2c_type_bootmode(serial))
1338 goto stayinbootmode;
1340 /* Check for ION Vendor ID and that the I2C is valid */
1341 if (!check_i2c_image(serial)) {
1342 struct ti_i2c_image_header *header;
1348 const struct firmware *fw;
1349 const char *fw_name = "edgeport/down3.bin";
1351 /* Validate Hardware version number
1352 * Read Manufacturing Descriptor from TI Based Edgeport
1354 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
1355 if (!ti_manuf_desc) {
1356 dev_err(dev, "%s - out of memory.\n", __func__);
1359 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
1361 kfree(ti_manuf_desc);
1362 goto stayinbootmode;
1365 /* Check for version 2 */
1366 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
1367 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n",
1368 __func__, ti_cpu_rev(ti_manuf_desc));
1369 kfree(ti_manuf_desc);
1370 goto stayinbootmode;
1373 kfree(ti_manuf_desc);
1376 * In order to update the I2C firmware we must change the type
1377 * 2 record to type 0xF2. This will force the UMP to come up
1378 * in Boot Mode. Then while in boot mode, the driver will
1379 * download the latest firmware (padded to 15.5k) into the
1380 * UMP ram. Finally when the device comes back up in download
1381 * mode the driver will cause the new firmware to be copied
1382 * from the UMP Ram to I2C and the firmware will update the
1383 * record type from 0xf2 to 0x02.
1385 * Do we really have to copy the whole firmware image,
1386 * or could we do this in place!
1389 /* Allocate a 15.5k buffer + 3 byte header */
1390 buffer_size = (((1024 * 16) - 512) +
1391 sizeof(struct ti_i2c_image_header));
1392 buffer = kmalloc(buffer_size, GFP_KERNEL);
1394 dev_err(dev, "%s - out of memory\n", __func__);
1398 /* Initialize the buffer to 0xff (pad the buffer) */
1399 memset(buffer, 0xff, buffer_size);
1401 err = request_firmware(&fw, fw_name, dev);
1403 dev_err(dev, "Failed to load image \"%s\" err %d\n",
1408 memcpy(buffer, &fw->data[4], fw->size - 4);
1409 release_firmware(fw);
1411 for (i = sizeof(struct ti_i2c_image_header);
1412 i < buffer_size; i++) {
1413 cs = (__u8)(cs + buffer[i]);
1416 header = (struct ti_i2c_image_header *)buffer;
1418 /* update length and checksum after padding */
1419 header->Length = cpu_to_le16((__u16)(buffer_size -
1420 sizeof(struct ti_i2c_image_header)));
1421 header->CheckSum = cs;
1423 /* Download the operational code */
1424 dev_dbg(dev, "%s - Downloading operational code image (TI UMP)\n", __func__);
1425 status = download_code(serial, buffer, buffer_size);
1430 dev_dbg(dev, "%s - Error downloading operational code image\n", __func__);
1434 /* Device will reboot */
1435 serial->product_info.TiMode = TI_MODE_TRANSITIONING;
1437 dev_dbg(dev, "%s - Download successful -- Device rebooting...\n", __func__);
1439 /* return an error on purpose */
1444 /* Eprom is invalid or blank stay in boot mode */
1445 dev_dbg(dev, "%s - STAYING IN BOOT MODE\n", __func__);
1446 serial->product_info.TiMode = TI_MODE_BOOT;
1452 static int ti_do_config(struct edgeport_port *port, int feature, int on)
1454 int port_number = port->port->number - port->port->serial->minor;
1455 on = !!on; /* 1 or 0 not bitmask */
1456 return send_cmd(port->port->serial->dev,
1457 feature, (__u8)(UMPM_UART1_PORT + port_number),
1462 static int restore_mcr(struct edgeport_port *port, __u8 mcr)
1466 dev_dbg(&port->port->dev, "%s - %x\n", __func__, mcr);
1468 status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR);
1471 status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS);
1474 return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK);
1477 /* Convert TI LSR to standard UART flags */
1478 static __u8 map_line_status(__u8 ti_lsr)
1482 #define MAP_FLAG(flagUmp, flagUart) \
1483 if (ti_lsr & flagUmp) \
1486 MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */
1487 MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */
1488 MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */
1489 MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */
1490 MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* rx data available */
1491 MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* tx hold reg empty */
1498 static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr)
1500 struct async_icount *icount;
1501 struct tty_struct *tty;
1503 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, msr);
1505 if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR |
1506 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
1507 icount = &edge_port->icount;
1509 /* update input line counters */
1510 if (msr & EDGEPORT_MSR_DELTA_CTS)
1512 if (msr & EDGEPORT_MSR_DELTA_DSR)
1514 if (msr & EDGEPORT_MSR_DELTA_CD)
1516 if (msr & EDGEPORT_MSR_DELTA_RI)
1518 wake_up_interruptible(&edge_port->delta_msr_wait);
1521 /* Save the new modem status */
1522 edge_port->shadow_msr = msr & 0xf0;
1524 tty = tty_port_tty_get(&edge_port->port->port);
1525 /* handle CTS flow control */
1526 if (tty && C_CRTSCTS(tty)) {
1527 if (msr & EDGEPORT_MSR_CTS) {
1528 tty->hw_stopped = 0;
1531 tty->hw_stopped = 1;
1537 static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data,
1538 __u8 lsr, __u8 data)
1540 struct async_icount *icount;
1541 __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR |
1542 LSR_FRM_ERR | LSR_BREAK));
1543 struct tty_struct *tty;
1545 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, new_lsr);
1547 edge_port->shadow_lsr = lsr;
1549 if (new_lsr & LSR_BREAK)
1551 * Parity and Framing errors only count if they
1552 * occur exclusive of a break being received.
1554 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
1556 /* Place LSR data byte into Rx buffer */
1558 tty = tty_port_tty_get(&edge_port->port->port);
1560 edge_tty_recv(&edge_port->port->dev, tty, &data, 1);
1565 /* update input line counters */
1566 icount = &edge_port->icount;
1567 if (new_lsr & LSR_BREAK)
1569 if (new_lsr & LSR_OVER_ERR)
1571 if (new_lsr & LSR_PAR_ERR)
1573 if (new_lsr & LSR_FRM_ERR)
1578 static void edge_interrupt_callback(struct urb *urb)
1580 struct edgeport_serial *edge_serial = urb->context;
1581 struct usb_serial_port *port;
1582 struct edgeport_port *edge_port;
1584 unsigned char *data = urb->transfer_buffer;
1585 int length = urb->actual_length;
1591 int status = urb->status;
1600 /* this urb is terminated, clean up */
1601 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n",
1605 dev_err(&urb->dev->dev, "%s - nonzero urb status received: "
1606 "%d\n", __func__, status);
1611 dev_dbg(&urb->dev->dev, "%s - no data in urb\n", __func__);
1615 dev = &edge_serial->serial->dev->dev;
1616 usb_serial_debug_data(dev, __func__, length, data);
1619 dev_dbg(dev, "%s - expecting packet of size 2, got %d\n", __func__, length);
1623 port_number = TIUMP_GET_PORT_FROM_CODE(data[0]);
1624 function = TIUMP_GET_FUNC_FROM_CODE(data[0]);
1625 dev_dbg(dev, "%s - port_number %d, function %d, info 0x%x\n", __func__,
1626 port_number, function, data[1]);
1627 port = edge_serial->serial->port[port_number];
1628 edge_port = usb_get_serial_port_data(port);
1630 dev_dbg(dev, "%s - edge_port not found\n", __func__);
1634 case TIUMP_INTERRUPT_CODE_LSR:
1635 lsr = map_line_status(data[1]);
1636 if (lsr & UMP_UART_LSR_DATA_MASK) {
1637 /* Save the LSR event for bulk read
1638 completion routine */
1639 dev_dbg(dev, "%s - LSR Event Port %u LSR Status = %02x\n",
1640 __func__, port_number, lsr);
1641 edge_port->lsr_event = 1;
1642 edge_port->lsr_mask = lsr;
1644 dev_dbg(dev, "%s - ===== Port %d LSR Status = %02x ======\n",
1645 __func__, port_number, lsr);
1646 handle_new_lsr(edge_port, 0, lsr, 0);
1650 case TIUMP_INTERRUPT_CODE_MSR: /* MSR */
1651 /* Copy MSR from UMP */
1653 dev_dbg(dev, "%s - ===== Port %u MSR Status = %02x ======\n",
1654 __func__, port_number, msr);
1655 handle_new_msr(edge_port, msr);
1659 dev_err(&urb->dev->dev,
1660 "%s - Unknown Interrupt code from UMP %x\n",
1667 retval = usb_submit_urb(urb, GFP_ATOMIC);
1669 dev_err(&urb->dev->dev,
1670 "%s - usb_submit_urb failed with result %d\n",
1674 static void edge_bulk_in_callback(struct urb *urb)
1676 struct edgeport_port *edge_port = urb->context;
1677 struct device *dev = &edge_port->port->dev;
1678 unsigned char *data = urb->transfer_buffer;
1679 struct tty_struct *tty;
1682 int status = urb->status;
1691 /* this urb is terminated, clean up */
1692 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status);
1695 dev_err(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", __func__, status);
1698 if (status == -EPIPE)
1702 dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__);
1706 port_number = edge_port->port->number - edge_port->port->serial->minor;
1708 if (edge_port->lsr_event) {
1709 edge_port->lsr_event = 0;
1710 dev_dbg(dev, "%s ===== Port %u LSR Status = %02x, Data = %02x ======\n",
1711 __func__, port_number, edge_port->lsr_mask, *data);
1712 handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data);
1713 /* Adjust buffer length/pointer */
1714 --urb->actual_length;
1718 tty = tty_port_tty_get(&edge_port->port->port);
1719 if (tty && urb->actual_length) {
1720 usb_serial_debug_data(dev, __func__, urb->actual_length, data);
1721 if (edge_port->close_pending)
1722 dev_dbg(dev, "%s - close pending, dropping data on the floor\n",
1725 edge_tty_recv(dev, tty, data, urb->actual_length);
1726 edge_port->icount.rx += urb->actual_length;
1731 /* continue read unless stopped */
1732 spin_lock(&edge_port->ep_lock);
1733 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
1734 retval = usb_submit_urb(urb, GFP_ATOMIC);
1735 else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING)
1736 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED;
1738 spin_unlock(&edge_port->ep_lock);
1740 dev_err(dev, "%s - usb_submit_urb failed with result %d\n", __func__, retval);
1743 static void edge_tty_recv(struct device *dev, struct tty_struct *tty,
1744 unsigned char *data, int length)
1748 queued = tty_insert_flip_string(tty, data, length);
1749 if (queued < length)
1750 dev_err(dev, "%s - dropping data, %d bytes lost\n",
1751 __func__, length - queued);
1752 tty_flip_buffer_push(tty);
1755 static void edge_bulk_out_callback(struct urb *urb)
1757 struct usb_serial_port *port = urb->context;
1758 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1759 int status = urb->status;
1760 struct tty_struct *tty;
1762 edge_port->ep_write_urb_in_use = 0;
1771 /* this urb is terminated, clean up */
1772 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n",
1776 dev_err_console(port, "%s - nonzero write bulk status "
1777 "received: %d\n", __func__, status);
1780 /* send any buffered data */
1781 tty = tty_port_tty_get(&port->port);
1786 static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
1788 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1789 struct edgeport_serial *edge_serial;
1790 struct usb_device *dev;
1795 u8 transaction_timeout;
1797 if (edge_port == NULL)
1800 port_number = port->number - port->serial->minor;
1801 switch (port_number) {
1803 edge_port->uart_base = UMPMEM_BASE_UART1;
1804 edge_port->dma_address = UMPD_OEDB1_ADDRESS;
1807 edge_port->uart_base = UMPMEM_BASE_UART2;
1808 edge_port->dma_address = UMPD_OEDB2_ADDRESS;
1811 dev_err(&port->dev, "Unknown port number!!!\n");
1815 dev_dbg(&port->dev, "%s - port_number = %d, uart_base = %04x, dma_address = %04x\n",
1816 __func__, port_number, edge_port->uart_base, edge_port->dma_address);
1818 dev = port->serial->dev;
1820 memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount));
1821 init_waitqueue_head(&edge_port->delta_msr_wait);
1823 /* turn off loopback */
1824 status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0);
1827 "%s - cannot send clear loopback command, %d\n",
1832 /* set up the port settings */
1834 edge_set_termios(tty, port, &tty->termios);
1836 /* open up the port */
1838 /* milliseconds to timeout for DMA transfer */
1839 transaction_timeout = 2;
1841 edge_port->ump_read_timeout =
1842 max(20, ((transaction_timeout * 3) / 2));
1844 /* milliseconds to timeout for DMA transfer */
1845 open_settings = (u8)(UMP_DMA_MODE_CONTINOUS |
1846 UMP_PIPE_TRANS_TIMEOUT_ENA |
1847 (transaction_timeout << 2));
1849 dev_dbg(&port->dev, "%s - Sending UMPC_OPEN_PORT\n", __func__);
1851 /* Tell TI to open and start the port */
1852 status = send_cmd(dev, UMPC_OPEN_PORT,
1853 (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0);
1855 dev_err(&port->dev, "%s - cannot send open command, %d\n",
1860 /* Start the DMA? */
1861 status = send_cmd(dev, UMPC_START_PORT,
1862 (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0);
1864 dev_err(&port->dev, "%s - cannot send start DMA command, %d\n",
1869 /* Clear TX and RX buffers in UMP */
1870 status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN);
1873 "%s - cannot send clear buffers command, %d\n",
1878 /* Read Initial MSR */
1879 status = ti_vread_sync(dev, UMPC_READ_MSR, 0,
1880 (__u16)(UMPM_UART1_PORT + port_number),
1881 &edge_port->shadow_msr, 1);
1883 dev_err(&port->dev, "%s - cannot send read MSR command, %d\n",
1888 dev_dbg(&port->dev, "ShadowMSR 0x%X\n", edge_port->shadow_msr);
1890 /* Set Initial MCR */
1891 edge_port->shadow_mcr = MCR_RTS | MCR_DTR;
1892 dev_dbg(&port->dev, "ShadowMCR 0x%X\n", edge_port->shadow_mcr);
1894 edge_serial = edge_port->edge_serial;
1895 if (mutex_lock_interruptible(&edge_serial->es_lock))
1896 return -ERESTARTSYS;
1897 if (edge_serial->num_ports_open == 0) {
1898 /* we are the first port to open, post the interrupt urb */
1899 urb = edge_serial->serial->port[0]->interrupt_in_urb;
1902 "%s - no interrupt urb present, exiting\n",
1905 goto release_es_lock;
1907 urb->context = edge_serial;
1908 status = usb_submit_urb(urb, GFP_KERNEL);
1911 "%s - usb_submit_urb failed with value %d\n",
1913 goto release_es_lock;
1918 * reset the data toggle on the bulk endpoints to work around bug in
1919 * host controllers where things get out of sync some times
1921 usb_clear_halt(dev, port->write_urb->pipe);
1922 usb_clear_halt(dev, port->read_urb->pipe);
1924 /* start up our bulk read urb */
1925 urb = port->read_urb;
1927 dev_err(&port->dev, "%s - no read urb present, exiting\n",
1930 goto unlink_int_urb;
1932 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
1933 urb->context = edge_port;
1934 status = usb_submit_urb(urb, GFP_KERNEL);
1937 "%s - read bulk usb_submit_urb failed with value %d\n",
1939 goto unlink_int_urb;
1942 ++edge_serial->num_ports_open;
1944 goto release_es_lock;
1947 if (edge_port->edge_serial->num_ports_open == 0)
1948 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
1950 mutex_unlock(&edge_serial->es_lock);
1954 static void edge_close(struct usb_serial_port *port)
1956 struct edgeport_serial *edge_serial;
1957 struct edgeport_port *edge_port;
1958 struct usb_serial *serial = port->serial;
1961 edge_serial = usb_get_serial_data(port->serial);
1962 edge_port = usb_get_serial_port_data(port);
1963 if (edge_serial == NULL || edge_port == NULL)
1966 /* The bulkreadcompletion routine will check
1967 * this flag and dump add read data */
1968 edge_port->close_pending = 1;
1970 /* chase the port close and flush */
1971 chase_port(edge_port, (HZ * closing_wait) / 100, 1);
1973 usb_kill_urb(port->read_urb);
1974 usb_kill_urb(port->write_urb);
1975 edge_port->ep_write_urb_in_use = 0;
1977 /* assuming we can still talk to the device,
1978 * send a close port command to it */
1979 dev_dbg(&port->dev, "%s - send umpc_close_port\n", __func__);
1980 port_number = port->number - port->serial->minor;
1982 mutex_lock(&serial->disc_mutex);
1983 if (!serial->disconnected) {
1984 send_cmd(serial->dev,
1986 (__u8)(UMPM_UART1_PORT + port_number),
1991 mutex_unlock(&serial->disc_mutex);
1993 mutex_lock(&edge_serial->es_lock);
1994 --edge_port->edge_serial->num_ports_open;
1995 if (edge_port->edge_serial->num_ports_open <= 0) {
1996 /* last port is now closed, let's shut down our interrupt urb */
1997 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
1998 edge_port->edge_serial->num_ports_open = 0;
2000 mutex_unlock(&edge_serial->es_lock);
2001 edge_port->close_pending = 0;
2004 static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
2005 const unsigned char *data, int count)
2007 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2010 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__);
2014 if (edge_port == NULL)
2016 if (edge_port->close_pending == 1)
2019 count = kfifo_in_locked(&edge_port->write_fifo, data, count,
2020 &edge_port->ep_lock);
2026 static void edge_send(struct tty_struct *tty)
2028 struct usb_serial_port *port = tty->driver_data;
2030 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2031 unsigned long flags;
2033 spin_lock_irqsave(&edge_port->ep_lock, flags);
2035 if (edge_port->ep_write_urb_in_use) {
2036 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2040 count = kfifo_out(&edge_port->write_fifo,
2041 port->write_urb->transfer_buffer,
2042 port->bulk_out_size);
2045 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2049 edge_port->ep_write_urb_in_use = 1;
2051 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2053 usb_serial_debug_data(&port->dev, __func__, count, port->write_urb->transfer_buffer);
2055 /* set up our urb */
2056 port->write_urb->transfer_buffer_length = count;
2058 /* send the data out the bulk port */
2059 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
2061 dev_err_console(port,
2062 "%s - failed submitting write urb, error %d\n",
2064 edge_port->ep_write_urb_in_use = 0;
2065 /* TODO: reschedule edge_send */
2067 edge_port->icount.tx += count;
2069 /* wakeup any process waiting for writes to complete */
2070 /* there is now more room in the buffer for new writes */
2075 static int edge_write_room(struct tty_struct *tty)
2077 struct usb_serial_port *port = tty->driver_data;
2078 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2080 unsigned long flags;
2082 if (edge_port == NULL)
2084 if (edge_port->close_pending == 1)
2087 spin_lock_irqsave(&edge_port->ep_lock, flags);
2088 room = kfifo_avail(&edge_port->write_fifo);
2089 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2091 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room);
2095 static int edge_chars_in_buffer(struct tty_struct *tty)
2097 struct usb_serial_port *port = tty->driver_data;
2098 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2100 unsigned long flags;
2102 if (edge_port == NULL)
2104 if (edge_port->close_pending == 1)
2107 spin_lock_irqsave(&edge_port->ep_lock, flags);
2108 chars = kfifo_len(&edge_port->write_fifo);
2109 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2111 dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars);
2115 static void edge_throttle(struct tty_struct *tty)
2117 struct usb_serial_port *port = tty->driver_data;
2118 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2121 if (edge_port == NULL)
2124 /* if we are implementing XON/XOFF, send the stop character */
2126 unsigned char stop_char = STOP_CHAR(tty);
2127 status = edge_write(tty, port, &stop_char, 1);
2129 dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status);
2133 /* if we are implementing RTS/CTS, stop reads */
2134 /* and the Edgeport will clear the RTS line */
2136 stop_read(edge_port);
2140 static void edge_unthrottle(struct tty_struct *tty)
2142 struct usb_serial_port *port = tty->driver_data;
2143 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2146 if (edge_port == NULL)
2149 /* if we are implementing XON/XOFF, send the start character */
2151 unsigned char start_char = START_CHAR(tty);
2152 status = edge_write(tty, port, &start_char, 1);
2154 dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status);
2157 /* if we are implementing RTS/CTS, restart reads */
2158 /* are the Edgeport will assert the RTS line */
2159 if (C_CRTSCTS(tty)) {
2160 status = restart_read(edge_port);
2163 "%s - read bulk usb_submit_urb failed: %d\n",
2169 static void stop_read(struct edgeport_port *edge_port)
2171 unsigned long flags;
2173 spin_lock_irqsave(&edge_port->ep_lock, flags);
2175 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
2176 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING;
2177 edge_port->shadow_mcr &= ~MCR_RTS;
2179 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2182 static int restart_read(struct edgeport_port *edge_port)
2186 unsigned long flags;
2188 spin_lock_irqsave(&edge_port->ep_lock, flags);
2190 if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) {
2191 urb = edge_port->port->read_urb;
2192 status = usb_submit_urb(urb, GFP_ATOMIC);
2194 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
2195 edge_port->shadow_mcr |= MCR_RTS;
2197 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2202 static void change_port_settings(struct tty_struct *tty,
2203 struct edgeport_port *edge_port, struct ktermios *old_termios)
2205 struct device *dev = &edge_port->port->dev;
2206 struct ump_uart_config *config;
2210 int port_number = edge_port->port->number -
2211 edge_port->port->serial->minor;
2213 dev_dbg(dev, "%s - port %d\n", __func__, edge_port->port->number);
2215 config = kmalloc (sizeof (*config), GFP_KERNEL);
2217 tty->termios = *old_termios;
2218 dev_err(dev, "%s - out of memory\n", __func__);
2222 cflag = tty->termios.c_cflag;
2226 /* These flags must be set */
2227 config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT;
2228 config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR;
2229 config->bUartMode = (__u8)(edge_port->bUartMode);
2231 switch (cflag & CSIZE) {
2233 config->bDataBits = UMP_UART_CHAR5BITS;
2234 dev_dbg(dev, "%s - data bits = 5\n", __func__);
2237 config->bDataBits = UMP_UART_CHAR6BITS;
2238 dev_dbg(dev, "%s - data bits = 6\n", __func__);
2241 config->bDataBits = UMP_UART_CHAR7BITS;
2242 dev_dbg(dev, "%s - data bits = 7\n", __func__);
2246 config->bDataBits = UMP_UART_CHAR8BITS;
2247 dev_dbg(dev, "%s - data bits = 8\n", __func__);
2251 if (cflag & PARENB) {
2252 if (cflag & PARODD) {
2253 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2254 config->bParity = UMP_UART_ODDPARITY;
2255 dev_dbg(dev, "%s - parity = odd\n", __func__);
2257 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2258 config->bParity = UMP_UART_EVENPARITY;
2259 dev_dbg(dev, "%s - parity = even\n", __func__);
2262 config->bParity = UMP_UART_NOPARITY;
2263 dev_dbg(dev, "%s - parity = none\n", __func__);
2266 if (cflag & CSTOPB) {
2267 config->bStopBits = UMP_UART_STOPBIT2;
2268 dev_dbg(dev, "%s - stop bits = 2\n", __func__);
2270 config->bStopBits = UMP_UART_STOPBIT1;
2271 dev_dbg(dev, "%s - stop bits = 1\n", __func__);
2274 /* figure out the flow control settings */
2275 if (cflag & CRTSCTS) {
2276 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW;
2277 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW;
2278 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__);
2280 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__);
2281 tty->hw_stopped = 0;
2282 restart_read(edge_port);
2285 /* if we are implementing XON/XOFF, set the start and stop
2286 character in the device */
2287 config->cXon = START_CHAR(tty);
2288 config->cXoff = STOP_CHAR(tty);
2290 /* if we are implementing INBOUND XON/XOFF */
2292 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X;
2293 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2294 __func__, config->cXon, config->cXoff);
2296 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__);
2298 /* if we are implementing OUTBOUND XON/XOFF */
2300 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X;
2301 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2302 __func__, config->cXon, config->cXoff);
2304 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__);
2306 tty->termios.c_cflag &= ~CMSPAR;
2308 /* Round the baud rate */
2309 baud = tty_get_baud_rate(tty);
2311 /* pick a default, any default... */
2314 tty_encode_baud_rate(tty, baud, baud);
2316 edge_port->baud_rate = baud;
2317 config->wBaudRate = (__u16)((461550L + baud/2) / baud);
2319 /* FIXME: Recompute actual baud from divisor here */
2321 dev_dbg(dev, "%s - baud rate = %d, wBaudRate = %d\n", __func__, baud, config->wBaudRate);
2323 dev_dbg(dev, "wBaudRate: %d\n", (int)(461550L / config->wBaudRate));
2324 dev_dbg(dev, "wFlags: 0x%x\n", config->wFlags);
2325 dev_dbg(dev, "bDataBits: %d\n", config->bDataBits);
2326 dev_dbg(dev, "bParity: %d\n", config->bParity);
2327 dev_dbg(dev, "bStopBits: %d\n", config->bStopBits);
2328 dev_dbg(dev, "cXon: %d\n", config->cXon);
2329 dev_dbg(dev, "cXoff: %d\n", config->cXoff);
2330 dev_dbg(dev, "bUartMode: %d\n", config->bUartMode);
2332 /* move the word values into big endian mode */
2333 cpu_to_be16s(&config->wFlags);
2334 cpu_to_be16s(&config->wBaudRate);
2336 status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG,
2337 (__u8)(UMPM_UART1_PORT + port_number),
2338 0, (__u8 *)config, sizeof(*config));
2340 dev_dbg(dev, "%s - error %d when trying to write config to device\n",
2345 static void edge_set_termios(struct tty_struct *tty,
2346 struct usb_serial_port *port, struct ktermios *old_termios)
2348 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2351 cflag = tty->termios.c_cflag;
2353 dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__,
2354 tty->termios.c_cflag, tty->termios.c_iflag);
2355 dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__,
2356 old_termios->c_cflag, old_termios->c_iflag);
2357 dev_dbg(&port->dev, "%s - port %d\n", __func__, port->number);
2359 if (edge_port == NULL)
2361 /* change the port settings to the new ones specified */
2362 change_port_settings(tty, edge_port, old_termios);
2365 static int edge_tiocmset(struct tty_struct *tty,
2366 unsigned int set, unsigned int clear)
2368 struct usb_serial_port *port = tty->driver_data;
2369 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2371 unsigned long flags;
2373 spin_lock_irqsave(&edge_port->ep_lock, flags);
2374 mcr = edge_port->shadow_mcr;
2375 if (set & TIOCM_RTS)
2377 if (set & TIOCM_DTR)
2379 if (set & TIOCM_LOOP)
2380 mcr |= MCR_LOOPBACK;
2382 if (clear & TIOCM_RTS)
2384 if (clear & TIOCM_DTR)
2386 if (clear & TIOCM_LOOP)
2387 mcr &= ~MCR_LOOPBACK;
2389 edge_port->shadow_mcr = mcr;
2390 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2392 restore_mcr(edge_port, mcr);
2396 static int edge_tiocmget(struct tty_struct *tty)
2398 struct usb_serial_port *port = tty->driver_data;
2399 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2400 unsigned int result = 0;
2403 unsigned long flags;
2405 spin_lock_irqsave(&edge_port->ep_lock, flags);
2407 msr = edge_port->shadow_msr;
2408 mcr = edge_port->shadow_mcr;
2409 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */
2410 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */
2411 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */
2412 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */
2413 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */
2414 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */
2417 dev_dbg(&port->dev, "%s -- %x\n", __func__, result);
2418 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2423 static int edge_get_icount(struct tty_struct *tty,
2424 struct serial_icounter_struct *icount)
2426 struct usb_serial_port *port = tty->driver_data;
2427 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2428 struct async_icount *ic = &edge_port->icount;
2430 icount->cts = ic->cts;
2431 icount->dsr = ic->dsr;
2432 icount->rng = ic->rng;
2433 icount->dcd = ic->dcd;
2434 icount->tx = ic->tx;
2435 icount->rx = ic->rx;
2436 icount->frame = ic->frame;
2437 icount->parity = ic->parity;
2438 icount->overrun = ic->overrun;
2439 icount->brk = ic->brk;
2440 icount->buf_overrun = ic->buf_overrun;
2444 static int get_serial_info(struct edgeport_port *edge_port,
2445 struct serial_struct __user *retinfo)
2447 struct serial_struct tmp;
2452 memset(&tmp, 0, sizeof(tmp));
2454 tmp.type = PORT_16550A;
2455 tmp.line = edge_port->port->serial->minor;
2456 tmp.port = edge_port->port->number;
2458 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
2459 tmp.xmit_fifo_size = edge_port->port->bulk_out_size;
2460 tmp.baud_base = 9600;
2461 tmp.close_delay = 5*HZ;
2462 tmp.closing_wait = closing_wait;
2464 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2469 static int edge_ioctl(struct tty_struct *tty,
2470 unsigned int cmd, unsigned long arg)
2472 struct usb_serial_port *port = tty->driver_data;
2473 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2474 struct async_icount cnow;
2475 struct async_icount cprev;
2477 dev_dbg(&port->dev, "%s - port %d, cmd = 0x%x\n", __func__, port->number, cmd);
2481 dev_dbg(&port->dev, "%s - TIOCGSERIAL\n", __func__);
2482 return get_serial_info(edge_port,
2483 (struct serial_struct __user *) arg);
2485 dev_dbg(&port->dev, "%s - TIOCMIWAIT\n", __func__);
2486 cprev = edge_port->icount;
2488 interruptible_sleep_on(&edge_port->delta_msr_wait);
2489 /* see if a signal did it */
2490 if (signal_pending(current))
2491 return -ERESTARTSYS;
2492 cnow = edge_port->icount;
2493 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
2494 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
2495 return -EIO; /* no change => error */
2496 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
2497 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
2498 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
2499 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) {
2507 return -ENOIOCTLCMD;
2510 static void edge_break(struct tty_struct *tty, int break_state)
2512 struct usb_serial_port *port = tty->driver_data;
2513 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2515 int bv = 0; /* Off */
2517 /* chase the port close */
2518 chase_port(edge_port, 0, 0);
2520 if (break_state == -1)
2522 status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv);
2524 dev_dbg(&port->dev, "%s - error %d sending break set/clear command.\n",
2528 static int edge_startup(struct usb_serial *serial)
2530 struct edgeport_serial *edge_serial;
2533 /* create our private serial structure */
2534 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
2535 if (edge_serial == NULL) {
2536 dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__);
2539 mutex_init(&edge_serial->es_lock);
2540 edge_serial->serial = serial;
2541 usb_set_serial_data(serial, edge_serial);
2543 status = download_fw(edge_serial);
2552 static void edge_disconnect(struct usb_serial *serial)
2556 static void edge_release(struct usb_serial *serial)
2558 kfree(usb_get_serial_data(serial));
2561 static int edge_port_probe(struct usb_serial_port *port)
2563 struct edgeport_port *edge_port;
2566 edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL);
2570 ret = kfifo_alloc(&edge_port->write_fifo, EDGE_OUT_BUF_SIZE,
2577 spin_lock_init(&edge_port->ep_lock);
2578 edge_port->port = port;
2579 edge_port->edge_serial = usb_get_serial_data(port->serial);
2580 edge_port->bUartMode = default_uart_mode;
2582 usb_set_serial_port_data(port, edge_port);
2584 ret = edge_create_sysfs_attrs(port);
2586 kfifo_free(&edge_port->write_fifo);
2594 static int edge_port_remove(struct usb_serial_port *port)
2596 struct edgeport_port *edge_port;
2598 edge_port = usb_get_serial_port_data(port);
2600 edge_remove_sysfs_attrs(port);
2601 kfifo_free(&edge_port->write_fifo);
2607 /* Sysfs Attributes */
2609 static ssize_t show_uart_mode(struct device *dev,
2610 struct device_attribute *attr, char *buf)
2612 struct usb_serial_port *port = to_usb_serial_port(dev);
2613 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2615 return sprintf(buf, "%d\n", edge_port->bUartMode);
2618 static ssize_t store_uart_mode(struct device *dev,
2619 struct device_attribute *attr, const char *valbuf, size_t count)
2621 struct usb_serial_port *port = to_usb_serial_port(dev);
2622 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2623 unsigned int v = simple_strtoul(valbuf, NULL, 0);
2625 dev_dbg(dev, "%s: setting uart_mode = %d\n", __func__, v);
2628 edge_port->bUartMode = v;
2630 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v);
2635 static DEVICE_ATTR(uart_mode, S_IWUSR | S_IRUGO, show_uart_mode,
2638 static int edge_create_sysfs_attrs(struct usb_serial_port *port)
2640 return device_create_file(&port->dev, &dev_attr_uart_mode);
2643 static int edge_remove_sysfs_attrs(struct usb_serial_port *port)
2645 device_remove_file(&port->dev, &dev_attr_uart_mode);
2650 static struct usb_serial_driver edgeport_1port_device = {
2652 .owner = THIS_MODULE,
2653 .name = "edgeport_ti_1",
2655 .description = "Edgeport TI 1 port adapter",
2656 .id_table = edgeport_1port_id_table,
2659 .close = edge_close,
2660 .throttle = edge_throttle,
2661 .unthrottle = edge_unthrottle,
2662 .attach = edge_startup,
2663 .disconnect = edge_disconnect,
2664 .release = edge_release,
2665 .port_probe = edge_port_probe,
2666 .port_remove = edge_port_remove,
2667 .ioctl = edge_ioctl,
2668 .set_termios = edge_set_termios,
2669 .tiocmget = edge_tiocmget,
2670 .tiocmset = edge_tiocmset,
2671 .get_icount = edge_get_icount,
2672 .write = edge_write,
2673 .write_room = edge_write_room,
2674 .chars_in_buffer = edge_chars_in_buffer,
2675 .break_ctl = edge_break,
2676 .read_int_callback = edge_interrupt_callback,
2677 .read_bulk_callback = edge_bulk_in_callback,
2678 .write_bulk_callback = edge_bulk_out_callback,
2681 static struct usb_serial_driver edgeport_2port_device = {
2683 .owner = THIS_MODULE,
2684 .name = "edgeport_ti_2",
2686 .description = "Edgeport TI 2 port adapter",
2687 .id_table = edgeport_2port_id_table,
2690 .close = edge_close,
2691 .throttle = edge_throttle,
2692 .unthrottle = edge_unthrottle,
2693 .attach = edge_startup,
2694 .disconnect = edge_disconnect,
2695 .release = edge_release,
2696 .port_probe = edge_port_probe,
2697 .port_remove = edge_port_remove,
2698 .ioctl = edge_ioctl,
2699 .set_termios = edge_set_termios,
2700 .tiocmget = edge_tiocmget,
2701 .tiocmset = edge_tiocmset,
2702 .write = edge_write,
2703 .write_room = edge_write_room,
2704 .chars_in_buffer = edge_chars_in_buffer,
2705 .break_ctl = edge_break,
2706 .read_int_callback = edge_interrupt_callback,
2707 .read_bulk_callback = edge_bulk_in_callback,
2708 .write_bulk_callback = edge_bulk_out_callback,
2711 static struct usb_serial_driver * const serial_drivers[] = {
2712 &edgeport_1port_device, &edgeport_2port_device, NULL
2715 module_usb_serial_driver(serial_drivers, id_table_combined);
2717 MODULE_AUTHOR(DRIVER_AUTHOR);
2718 MODULE_DESCRIPTION(DRIVER_DESC);
2719 MODULE_LICENSE("GPL");
2720 MODULE_FIRMWARE("edgeport/down3.bin");
2722 module_param(closing_wait, int, S_IRUGO | S_IWUSR);
2723 MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs");
2725 module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR);
2726 MODULE_PARM_DESC(ignore_cpu_rev,
2727 "Ignore the cpu revision when connecting to a device");
2729 module_param(default_uart_mode, int, S_IRUGO | S_IWUSR);
2730 MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ...");