1 | // SPDX-License-Identifier: GPL-2.0+ |
2 | /* |
3 | * Edgeport USB Serial Converter driver |
4 | * |
5 | * Copyright (C) 2000-2002 Inside Out Networks, All rights reserved. |
6 | * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> |
7 | * |
8 | * Supports the following devices: |
9 | * EP/1 EP/2 EP/4 EP/21 EP/22 EP/221 EP/42 EP/421 WATCHPORT |
10 | * |
11 | * For questions or problems with this driver, contact Inside Out |
12 | * Networks technical support, or Peter Berger <pberger@brimson.com>, |
13 | * or Al Borchers <alborchers@steinerpoint.com>. |
14 | */ |
15 | |
16 | #include <linux/kernel.h> |
17 | #include <linux/jiffies.h> |
18 | #include <linux/errno.h> |
19 | #include <linux/slab.h> |
20 | #include <linux/tty.h> |
21 | #include <linux/tty_driver.h> |
22 | #include <linux/tty_flip.h> |
23 | #include <linux/module.h> |
24 | #include <linux/spinlock.h> |
25 | #include <linux/mutex.h> |
26 | #include <linux/serial.h> |
27 | #include <linux/swab.h> |
28 | #include <linux/kfifo.h> |
29 | #include <linux/ioctl.h> |
30 | #include <linux/firmware.h> |
31 | #include <linux/uaccess.h> |
32 | #include <linux/usb.h> |
33 | #include <linux/usb/serial.h> |
34 | |
35 | #include "io_16654.h" |
36 | #include "io_usbvend.h" |
37 | #include "io_ti.h" |
38 | |
39 | #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli" |
40 | #define DRIVER_DESC "Edgeport USB Serial Driver" |
41 | |
42 | #define EPROM_PAGE_SIZE 64 |
43 | |
44 | |
45 | /* different hardware types */ |
46 | #define HARDWARE_TYPE_930 0 |
47 | #define HARDWARE_TYPE_TIUMP 1 |
48 | |
49 | /* IOCTL_PRIVATE_TI_GET_MODE Definitions */ |
50 | #define TI_MODE_CONFIGURING 0 /* Device has not entered start device */ |
51 | #define TI_MODE_BOOT 1 /* Staying in boot mode */ |
52 | #define TI_MODE_DOWNLOAD 2 /* Made it to download mode */ |
53 | #define TI_MODE_TRANSITIONING 3 /* |
54 | * Currently in boot mode but |
55 | * transitioning to download mode |
56 | */ |
57 | |
58 | /* read urb state */ |
59 | #define EDGE_READ_URB_RUNNING 0 |
60 | #define EDGE_READ_URB_STOPPING 1 |
61 | #define EDGE_READ_URB_STOPPED 2 |
62 | |
63 | |
64 | /* Product information read from the Edgeport */ |
65 | struct product_info { |
66 | int TiMode; /* Current TI Mode */ |
67 | u8 hardware_type; /* Type of hardware */ |
68 | } __packed; |
69 | |
70 | /* |
71 | * Edgeport firmware header |
72 | * |
73 | * "build_number" has been set to 0 in all three of the images I have |
74 | * seen, and Digi Tech Support suggests that it is safe to ignore it. |
75 | * |
76 | * "length" is the number of bytes of actual data following the header. |
77 | * |
78 | * "checksum" is the low order byte resulting from adding the values of |
79 | * all the data bytes. |
80 | */ |
81 | struct edgeport_fw_hdr { |
82 | u8 major_version; |
83 | u8 minor_version; |
84 | __le16 build_number; |
85 | __le16 length; |
86 | u8 checksum; |
87 | } __packed; |
88 | |
89 | struct edgeport_port { |
90 | u16 uart_base; |
91 | u16 dma_address; |
92 | u8 shadow_msr; |
93 | u8 shadow_mcr; |
94 | u8 shadow_lsr; |
95 | u8 lsr_mask; |
96 | u32 ump_read_timeout; /* |
97 | * Number of milliseconds the UMP will |
98 | * wait without data before completing |
99 | * a read short |
100 | */ |
101 | int baud_rate; |
102 | int close_pending; |
103 | int lsr_event; |
104 | |
105 | struct edgeport_serial *edge_serial; |
106 | struct usb_serial_port *port; |
107 | u8 bUartMode; /* Port type, 0: RS232, etc. */ |
108 | spinlock_t ep_lock; |
109 | int ep_read_urb_state; |
110 | int ep_write_urb_in_use; |
111 | }; |
112 | |
113 | struct edgeport_serial { |
114 | struct product_info product_info; |
115 | u8 TI_I2C_Type; /* Type of I2C in UMP */ |
116 | u8 TiReadI2C; /* |
117 | * Set to TRUE if we have read the |
118 | * I2c in Boot Mode |
119 | */ |
120 | struct mutex es_lock; |
121 | int num_ports_open; |
122 | struct usb_serial *serial; |
123 | struct delayed_work heartbeat_work; |
124 | int fw_version; |
125 | bool use_heartbeat; |
126 | }; |
127 | |
128 | |
129 | /* Devices that this driver supports */ |
130 | static const struct usb_device_id edgeport_1port_id_table[] = { |
131 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) }, |
132 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) }, |
133 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) }, |
134 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) }, |
135 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) }, |
136 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) }, |
137 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) }, |
138 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) }, |
139 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) }, |
140 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) }, |
141 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) }, |
142 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) }, |
143 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) }, |
144 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) }, |
145 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) }, |
146 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) }, |
147 | { } |
148 | }; |
149 | |
150 | static const struct usb_device_id edgeport_2port_id_table[] = { |
151 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) }, |
152 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) }, |
153 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) }, |
154 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) }, |
155 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) }, |
156 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) }, |
157 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) }, |
158 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) }, |
159 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) }, |
160 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) }, |
161 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) }, |
162 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) }, |
163 | /* The 4, 8 and 16 port devices show up as multiple 2 port devices */ |
164 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) }, |
165 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) }, |
166 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) }, |
167 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) }, |
168 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) }, |
169 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_E5805A) }, |
170 | { } |
171 | }; |
172 | |
173 | /* Devices that this driver supports */ |
174 | static const struct usb_device_id id_table_combined[] = { |
175 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) }, |
176 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) }, |
177 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) }, |
178 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) }, |
179 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) }, |
180 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) }, |
181 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) }, |
182 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) }, |
183 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) }, |
184 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) }, |
185 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) }, |
186 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) }, |
187 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) }, |
188 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) }, |
189 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) }, |
190 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) }, |
191 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) }, |
192 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) }, |
193 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) }, |
194 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) }, |
195 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) }, |
196 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) }, |
197 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) }, |
198 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) }, |
199 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) }, |
200 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) }, |
201 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) }, |
202 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) }, |
203 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) }, |
204 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) }, |
205 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) }, |
206 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) }, |
207 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) }, |
208 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_E5805A) }, |
209 | { } |
210 | }; |
211 | |
212 | MODULE_DEVICE_TABLE(usb, id_table_combined); |
213 | |
214 | static bool ignore_cpu_rev; |
215 | static int default_uart_mode; /* RS232 */ |
216 | |
217 | static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, |
218 | int length); |
219 | |
220 | static void stop_read(struct edgeport_port *edge_port); |
221 | static int restart_read(struct edgeport_port *edge_port); |
222 | |
223 | static void edge_set_termios(struct tty_struct *tty, |
224 | struct usb_serial_port *port, |
225 | const struct ktermios *old_termios); |
226 | static void edge_send(struct usb_serial_port *port, struct tty_struct *tty); |
227 | |
228 | static int do_download_mode(struct edgeport_serial *serial, |
229 | const struct firmware *fw); |
230 | static int do_boot_mode(struct edgeport_serial *serial, |
231 | const struct firmware *fw); |
232 | |
233 | /* sysfs attributes */ |
234 | static int edge_create_sysfs_attrs(struct usb_serial_port *port); |
235 | static int edge_remove_sysfs_attrs(struct usb_serial_port *port); |
236 | |
237 | /* |
238 | * Some release of Edgeport firmware "down3.bin" after version 4.80 |
239 | * introduced code to automatically disconnect idle devices on some |
240 | * Edgeport models after periods of inactivity, typically ~60 seconds. |
241 | * This occurs without regard to whether ports on the device are open |
242 | * or not. Digi International Tech Support suggested: |
243 | * |
244 | * 1. Adding driver "heartbeat" code to reset the firmware timer by |
245 | * requesting a descriptor record every 15 seconds, which should be |
246 | * effective with newer firmware versions that require it, and benign |
247 | * with older versions that do not. In practice 40 seconds seems often |
248 | * enough. |
249 | * 2. The heartbeat code is currently required only on Edgeport/416 models. |
250 | */ |
251 | #define FW_HEARTBEAT_VERSION_CUTOFF ((4 << 8) + 80) |
252 | #define FW_HEARTBEAT_SECS 40 |
253 | |
254 | /* Timeouts in msecs: firmware downloads take longer */ |
255 | #define TI_VSEND_TIMEOUT_DEFAULT 1000 |
256 | #define TI_VSEND_TIMEOUT_FW_DOWNLOAD 10000 |
257 | |
258 | static int ti_vread_sync(struct usb_device *dev, u8 request, u16 value, |
259 | u16 index, void *data, int size) |
260 | { |
261 | int status; |
262 | |
263 | status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request, |
264 | requesttype: (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN), |
265 | value, index, data, size, timeout: 1000); |
266 | if (status < 0) |
267 | return status; |
268 | if (status != size) { |
269 | dev_dbg(&dev->dev, "%s - wanted to read %d, but only read %d\n" , |
270 | __func__, size, status); |
271 | return -ECOMM; |
272 | } |
273 | return 0; |
274 | } |
275 | |
276 | static int ti_vsend_sync(struct usb_device *dev, u8 request, u16 value, |
277 | u16 index, void *data, int size, int timeout) |
278 | { |
279 | int status; |
280 | |
281 | status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request, |
282 | requesttype: (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT), |
283 | value, index, data, size, timeout); |
284 | if (status < 0) |
285 | return status; |
286 | |
287 | return 0; |
288 | } |
289 | |
290 | static int read_port_cmd(struct usb_serial_port *port, u8 command, u16 value, |
291 | void *data, int size) |
292 | { |
293 | return ti_vread_sync(dev: port->serial->dev, request: command, value, |
294 | UMPM_UART1_PORT + port->port_number, |
295 | data, size); |
296 | } |
297 | |
298 | static int send_port_cmd(struct usb_serial_port *port, u8 command, u16 value, |
299 | void *data, int size) |
300 | { |
301 | return ti_vsend_sync(dev: port->serial->dev, request: command, value, |
302 | UMPM_UART1_PORT + port->port_number, |
303 | data, size, TI_VSEND_TIMEOUT_DEFAULT); |
304 | } |
305 | |
306 | /* clear tx/rx buffers and fifo in TI UMP */ |
307 | static int purge_port(struct usb_serial_port *port, u16 mask) |
308 | { |
309 | int port_number = port->port_number; |
310 | |
311 | dev_dbg(&port->dev, "%s - port %d, mask %x\n" , __func__, port_number, mask); |
312 | |
313 | return send_port_cmd(port, UMPC_PURGE_PORT, value: mask, NULL, size: 0); |
314 | } |
315 | |
316 | /** |
317 | * read_download_mem - Read edgeport memory from TI chip |
318 | * @dev: usb device pointer |
319 | * @start_address: Device CPU address at which to read |
320 | * @length: Length of above data |
321 | * @address_type: Can read both XDATA and I2C |
322 | * @buffer: pointer to input data buffer |
323 | */ |
324 | static int read_download_mem(struct usb_device *dev, int start_address, |
325 | int length, u8 address_type, u8 *buffer) |
326 | { |
327 | int status = 0; |
328 | u8 read_length; |
329 | u16 be_start_address; |
330 | |
331 | dev_dbg(&dev->dev, "%s - @ %x for %d\n" , __func__, start_address, length); |
332 | |
333 | /* |
334 | * Read in blocks of 64 bytes |
335 | * (TI firmware can't handle more than 64 byte reads) |
336 | */ |
337 | while (length) { |
338 | if (length > 64) |
339 | read_length = 64; |
340 | else |
341 | read_length = (u8)length; |
342 | |
343 | if (read_length > 1) { |
344 | dev_dbg(&dev->dev, "%s - @ %x for %d\n" , __func__, start_address, read_length); |
345 | } |
346 | /* |
347 | * NOTE: Must use swab as wIndex is sent in little-endian |
348 | * byte order regardless of host byte order. |
349 | */ |
350 | be_start_address = swab16((u16)start_address); |
351 | status = ti_vread_sync(dev, UMPC_MEMORY_READ, |
352 | value: (u16)address_type, |
353 | index: be_start_address, |
354 | data: buffer, size: read_length); |
355 | |
356 | if (status) { |
357 | dev_dbg(&dev->dev, "%s - ERROR %x\n" , __func__, status); |
358 | return status; |
359 | } |
360 | |
361 | if (read_length > 1) |
362 | usb_serial_debug_data(dev: &dev->dev, function: __func__, size: read_length, data: buffer); |
363 | |
364 | /* Update pointers/length */ |
365 | start_address += read_length; |
366 | buffer += read_length; |
367 | length -= read_length; |
368 | } |
369 | |
370 | return status; |
371 | } |
372 | |
373 | static int read_ram(struct usb_device *dev, int start_address, |
374 | int length, u8 *buffer) |
375 | { |
376 | return read_download_mem(dev, start_address, length, |
377 | DTK_ADDR_SPACE_XDATA, buffer); |
378 | } |
379 | |
380 | /* Read edgeport memory to a given block */ |
381 | static int read_boot_mem(struct edgeport_serial *serial, |
382 | int start_address, int length, u8 *buffer) |
383 | { |
384 | int status = 0; |
385 | int i; |
386 | |
387 | for (i = 0; i < length; i++) { |
388 | status = ti_vread_sync(dev: serial->serial->dev, |
389 | UMPC_MEMORY_READ, value: serial->TI_I2C_Type, |
390 | index: (u16)(start_address+i), data: &buffer[i], size: 0x01); |
391 | if (status) { |
392 | dev_dbg(&serial->serial->dev->dev, "%s - ERROR %x\n" , __func__, status); |
393 | return status; |
394 | } |
395 | } |
396 | |
397 | dev_dbg(&serial->serial->dev->dev, "%s - start_address = %x, length = %d\n" , |
398 | __func__, start_address, length); |
399 | usb_serial_debug_data(dev: &serial->serial->dev->dev, function: __func__, size: length, data: buffer); |
400 | |
401 | serial->TiReadI2C = 1; |
402 | |
403 | return status; |
404 | } |
405 | |
406 | /* Write given block to TI EPROM memory */ |
407 | static int write_boot_mem(struct edgeport_serial *serial, |
408 | int start_address, int length, u8 *buffer) |
409 | { |
410 | int status = 0; |
411 | int i; |
412 | u8 *temp; |
413 | |
414 | /* Must do a read before write */ |
415 | if (!serial->TiReadI2C) { |
416 | temp = kmalloc(size: 1, GFP_KERNEL); |
417 | if (!temp) |
418 | return -ENOMEM; |
419 | |
420 | status = read_boot_mem(serial, start_address: 0, length: 1, buffer: temp); |
421 | kfree(objp: temp); |
422 | if (status) |
423 | return status; |
424 | } |
425 | |
426 | for (i = 0; i < length; ++i) { |
427 | status = ti_vsend_sync(dev: serial->serial->dev, UMPC_MEMORY_WRITE, |
428 | value: buffer[i], index: (u16)(i + start_address), NULL, |
429 | size: 0, TI_VSEND_TIMEOUT_DEFAULT); |
430 | if (status) |
431 | return status; |
432 | } |
433 | |
434 | dev_dbg(&serial->serial->dev->dev, "%s - start_sddr = %x, length = %d\n" , __func__, start_address, length); |
435 | usb_serial_debug_data(dev: &serial->serial->dev->dev, function: __func__, size: length, data: buffer); |
436 | |
437 | return status; |
438 | } |
439 | |
440 | /* Write edgeport I2C memory to TI chip */ |
441 | static int write_i2c_mem(struct edgeport_serial *serial, |
442 | int start_address, int length, u8 address_type, u8 *buffer) |
443 | { |
444 | struct device *dev = &serial->serial->dev->dev; |
445 | int status = 0; |
446 | int write_length; |
447 | u16 be_start_address; |
448 | |
449 | /* We can only send a maximum of 1 aligned byte page at a time */ |
450 | |
451 | /* calculate the number of bytes left in the first page */ |
452 | write_length = EPROM_PAGE_SIZE - |
453 | (start_address & (EPROM_PAGE_SIZE - 1)); |
454 | |
455 | if (write_length > length) |
456 | write_length = length; |
457 | |
458 | dev_dbg(dev, "%s - BytesInFirstPage Addr = %x, length = %d\n" , |
459 | __func__, start_address, write_length); |
460 | usb_serial_debug_data(dev, function: __func__, size: write_length, data: buffer); |
461 | |
462 | /* |
463 | * Write first page. |
464 | * |
465 | * NOTE: Must use swab as wIndex is sent in little-endian byte order |
466 | * regardless of host byte order. |
467 | */ |
468 | be_start_address = swab16((u16)start_address); |
469 | status = ti_vsend_sync(dev: serial->serial->dev, UMPC_MEMORY_WRITE, |
470 | value: (u16)address_type, index: be_start_address, |
471 | data: buffer, size: write_length, TI_VSEND_TIMEOUT_DEFAULT); |
472 | if (status) { |
473 | dev_dbg(dev, "%s - ERROR %d\n" , __func__, status); |
474 | return status; |
475 | } |
476 | |
477 | length -= write_length; |
478 | start_address += write_length; |
479 | buffer += write_length; |
480 | |
481 | /* |
482 | * We should be aligned now -- can write max page size bytes at a |
483 | * time. |
484 | */ |
485 | while (length) { |
486 | if (length > EPROM_PAGE_SIZE) |
487 | write_length = EPROM_PAGE_SIZE; |
488 | else |
489 | write_length = length; |
490 | |
491 | dev_dbg(dev, "%s - Page Write Addr = %x, length = %d\n" , |
492 | __func__, start_address, write_length); |
493 | usb_serial_debug_data(dev, function: __func__, size: write_length, data: buffer); |
494 | |
495 | /* |
496 | * Write next page. |
497 | * |
498 | * NOTE: Must use swab as wIndex is sent in little-endian byte |
499 | * order regardless of host byte order. |
500 | */ |
501 | be_start_address = swab16((u16)start_address); |
502 | status = ti_vsend_sync(dev: serial->serial->dev, UMPC_MEMORY_WRITE, |
503 | value: (u16)address_type, index: be_start_address, data: buffer, |
504 | size: write_length, TI_VSEND_TIMEOUT_DEFAULT); |
505 | if (status) { |
506 | dev_err(dev, "%s - ERROR %d\n" , __func__, status); |
507 | return status; |
508 | } |
509 | |
510 | length -= write_length; |
511 | start_address += write_length; |
512 | buffer += write_length; |
513 | } |
514 | return status; |
515 | } |
516 | |
517 | /* |
518 | * Examine the UMP DMA registers and LSR |
519 | * |
520 | * Check the MSBit of the X and Y DMA byte count registers. |
521 | * A zero in this bit indicates that the TX DMA buffers are empty |
522 | * then check the TX Empty bit in the UART. |
523 | */ |
524 | static int tx_active(struct edgeport_port *port) |
525 | { |
526 | int status; |
527 | struct out_endpoint_desc_block *oedb; |
528 | u8 *lsr; |
529 | int bytes_left = 0; |
530 | |
531 | oedb = kmalloc(size: sizeof(*oedb), GFP_KERNEL); |
532 | if (!oedb) |
533 | return -ENOMEM; |
534 | |
535 | /* |
536 | * Sigh, that's right, just one byte, as not all platforms can |
537 | * do DMA from stack |
538 | */ |
539 | lsr = kmalloc(size: 1, GFP_KERNEL); |
540 | if (!lsr) { |
541 | kfree(objp: oedb); |
542 | return -ENOMEM; |
543 | } |
544 | /* Read the DMA Count Registers */ |
545 | status = read_ram(dev: port->port->serial->dev, start_address: port->dma_address, |
546 | length: sizeof(*oedb), buffer: (void *)oedb); |
547 | if (status) |
548 | goto exit_is_tx_active; |
549 | |
550 | dev_dbg(&port->port->dev, "%s - XByteCount 0x%X\n" , __func__, oedb->XByteCount); |
551 | |
552 | /* and the LSR */ |
553 | status = read_ram(dev: port->port->serial->dev, |
554 | start_address: port->uart_base + UMPMEM_OFFS_UART_LSR, length: 1, buffer: lsr); |
555 | |
556 | if (status) |
557 | goto exit_is_tx_active; |
558 | dev_dbg(&port->port->dev, "%s - LSR = 0x%X\n" , __func__, *lsr); |
559 | |
560 | /* If either buffer has data or we are transmitting then return TRUE */ |
561 | if ((oedb->XByteCount & 0x80) != 0) |
562 | bytes_left += 64; |
563 | |
564 | if ((*lsr & UMP_UART_LSR_TX_MASK) == 0) |
565 | bytes_left += 1; |
566 | |
567 | /* We return Not Active if we get any kind of error */ |
568 | exit_is_tx_active: |
569 | dev_dbg(&port->port->dev, "%s - return %d\n" , __func__, bytes_left); |
570 | |
571 | kfree(objp: lsr); |
572 | kfree(objp: oedb); |
573 | return bytes_left; |
574 | } |
575 | |
576 | static int choose_config(struct usb_device *dev) |
577 | { |
578 | /* |
579 | * There may be multiple configurations on this device, in which case |
580 | * we would need to read and parse all of them to find out which one |
581 | * we want. However, we just support one config at this point, |
582 | * configuration # 1, which is Config Descriptor 0. |
583 | */ |
584 | |
585 | dev_dbg(&dev->dev, "%s - Number of Interfaces = %d\n" , |
586 | __func__, dev->config->desc.bNumInterfaces); |
587 | dev_dbg(&dev->dev, "%s - MAX Power = %d\n" , |
588 | __func__, dev->config->desc.bMaxPower * 2); |
589 | |
590 | if (dev->config->desc.bNumInterfaces != 1) { |
591 | dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n" , __func__); |
592 | return -ENODEV; |
593 | } |
594 | |
595 | return 0; |
596 | } |
597 | |
598 | static int read_rom(struct edgeport_serial *serial, |
599 | int start_address, int length, u8 *buffer) |
600 | { |
601 | int status; |
602 | |
603 | if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { |
604 | status = read_download_mem(dev: serial->serial->dev, |
605 | start_address, |
606 | length, |
607 | address_type: serial->TI_I2C_Type, |
608 | buffer); |
609 | } else { |
610 | status = read_boot_mem(serial, start_address, length, |
611 | buffer); |
612 | } |
613 | return status; |
614 | } |
615 | |
616 | static int write_rom(struct edgeport_serial *serial, int start_address, |
617 | int length, u8 *buffer) |
618 | { |
619 | if (serial->product_info.TiMode == TI_MODE_BOOT) |
620 | return write_boot_mem(serial, start_address, length, |
621 | buffer); |
622 | |
623 | if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) |
624 | return write_i2c_mem(serial, start_address, length, |
625 | address_type: serial->TI_I2C_Type, buffer); |
626 | return -EINVAL; |
627 | } |
628 | |
629 | /* Read a descriptor header from I2C based on type */ |
630 | static int get_descriptor_addr(struct edgeport_serial *serial, |
631 | int desc_type, struct ti_i2c_desc *rom_desc) |
632 | { |
633 | int start_address; |
634 | int status; |
635 | |
636 | /* Search for requested descriptor in I2C */ |
637 | start_address = 2; |
638 | do { |
639 | status = read_rom(serial, |
640 | start_address, |
641 | length: sizeof(struct ti_i2c_desc), |
642 | buffer: (u8 *)rom_desc); |
643 | if (status) |
644 | return 0; |
645 | |
646 | if (rom_desc->Type == desc_type) |
647 | return start_address; |
648 | |
649 | start_address = start_address + sizeof(struct ti_i2c_desc) + |
650 | le16_to_cpu(rom_desc->Size); |
651 | |
652 | } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type); |
653 | |
654 | return 0; |
655 | } |
656 | |
657 | /* Validate descriptor checksum */ |
658 | static int valid_csum(struct ti_i2c_desc *rom_desc, u8 *buffer) |
659 | { |
660 | u16 i; |
661 | u8 cs = 0; |
662 | |
663 | for (i = 0; i < le16_to_cpu(rom_desc->Size); i++) |
664 | cs = (u8)(cs + buffer[i]); |
665 | |
666 | if (cs != rom_desc->CheckSum) { |
667 | pr_debug("%s - Mismatch %x - %x" , __func__, rom_desc->CheckSum, cs); |
668 | return -EINVAL; |
669 | } |
670 | return 0; |
671 | } |
672 | |
673 | /* Make sure that the I2C image is good */ |
674 | static int check_i2c_image(struct edgeport_serial *serial) |
675 | { |
676 | struct device *dev = &serial->serial->dev->dev; |
677 | int status = 0; |
678 | struct ti_i2c_desc *rom_desc; |
679 | int start_address = 2; |
680 | u8 *buffer; |
681 | u16 ttype; |
682 | |
683 | rom_desc = kmalloc(size: sizeof(*rom_desc), GFP_KERNEL); |
684 | if (!rom_desc) |
685 | return -ENOMEM; |
686 | |
687 | buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL); |
688 | if (!buffer) { |
689 | kfree(objp: rom_desc); |
690 | return -ENOMEM; |
691 | } |
692 | |
693 | /* Read the first byte (Signature0) must be 0x52 or 0x10 */ |
694 | status = read_rom(serial, start_address: 0, length: 1, buffer); |
695 | if (status) |
696 | goto out; |
697 | |
698 | if (*buffer != UMP5152 && *buffer != UMP3410) { |
699 | dev_err(dev, "%s - invalid buffer signature\n" , __func__); |
700 | status = -ENODEV; |
701 | goto out; |
702 | } |
703 | |
704 | do { |
705 | /* Validate the I2C */ |
706 | status = read_rom(serial, |
707 | start_address, |
708 | length: sizeof(struct ti_i2c_desc), |
709 | buffer: (u8 *)rom_desc); |
710 | if (status) |
711 | break; |
712 | |
713 | if ((start_address + sizeof(struct ti_i2c_desc) + |
714 | le16_to_cpu(rom_desc->Size)) > TI_MAX_I2C_SIZE) { |
715 | status = -ENODEV; |
716 | dev_dbg(dev, "%s - structure too big, erroring out.\n" , __func__); |
717 | break; |
718 | } |
719 | |
720 | dev_dbg(dev, "%s Type = 0x%x\n" , __func__, rom_desc->Type); |
721 | |
722 | /* Skip type 2 record */ |
723 | ttype = rom_desc->Type & 0x0f; |
724 | if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC |
725 | && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) { |
726 | /* Read the descriptor data */ |
727 | status = read_rom(serial, start_address: start_address + |
728 | sizeof(struct ti_i2c_desc), |
729 | le16_to_cpu(rom_desc->Size), |
730 | buffer); |
731 | if (status) |
732 | break; |
733 | |
734 | status = valid_csum(rom_desc, buffer); |
735 | if (status) |
736 | break; |
737 | } |
738 | start_address = start_address + sizeof(struct ti_i2c_desc) + |
739 | le16_to_cpu(rom_desc->Size); |
740 | |
741 | } while ((rom_desc->Type != I2C_DESC_TYPE_ION) && |
742 | (start_address < TI_MAX_I2C_SIZE)); |
743 | |
744 | if ((rom_desc->Type != I2C_DESC_TYPE_ION) || |
745 | (start_address > TI_MAX_I2C_SIZE)) |
746 | status = -ENODEV; |
747 | |
748 | out: |
749 | kfree(objp: buffer); |
750 | kfree(objp: rom_desc); |
751 | return status; |
752 | } |
753 | |
754 | static int get_manuf_info(struct edgeport_serial *serial, u8 *buffer) |
755 | { |
756 | int status; |
757 | int start_address; |
758 | struct ti_i2c_desc *rom_desc; |
759 | struct edge_ti_manuf_descriptor *desc; |
760 | struct device *dev = &serial->serial->dev->dev; |
761 | |
762 | rom_desc = kmalloc(size: sizeof(*rom_desc), GFP_KERNEL); |
763 | if (!rom_desc) |
764 | return -ENOMEM; |
765 | |
766 | start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION, |
767 | rom_desc); |
768 | |
769 | if (!start_address) { |
770 | dev_dbg(dev, "%s - Edge Descriptor not found in I2C\n" , __func__); |
771 | status = -ENODEV; |
772 | goto exit; |
773 | } |
774 | |
775 | /* Read the descriptor data */ |
776 | status = read_rom(serial, start_address: start_address+sizeof(struct ti_i2c_desc), |
777 | le16_to_cpu(rom_desc->Size), buffer); |
778 | if (status) |
779 | goto exit; |
780 | |
781 | status = valid_csum(rom_desc, buffer); |
782 | |
783 | desc = (struct edge_ti_manuf_descriptor *)buffer; |
784 | dev_dbg(dev, "%s - IonConfig 0x%x\n" , __func__, desc->IonConfig); |
785 | dev_dbg(dev, "%s - Version %d\n" , __func__, desc->Version); |
786 | dev_dbg(dev, "%s - Cpu/Board 0x%x\n" , __func__, desc->CpuRev_BoardRev); |
787 | dev_dbg(dev, "%s - NumPorts %d\n" , __func__, desc->NumPorts); |
788 | dev_dbg(dev, "%s - NumVirtualPorts %d\n" , __func__, desc->NumVirtualPorts); |
789 | dev_dbg(dev, "%s - TotalPorts %d\n" , __func__, desc->TotalPorts); |
790 | |
791 | exit: |
792 | kfree(objp: rom_desc); |
793 | return status; |
794 | } |
795 | |
796 | /* Build firmware header used for firmware update */ |
797 | static int build_i2c_fw_hdr(u8 *, const struct firmware *fw) |
798 | { |
799 | u8 *buffer; |
800 | int buffer_size; |
801 | int i; |
802 | u8 cs = 0; |
803 | struct ti_i2c_desc *; |
804 | struct ti_i2c_image_header *; |
805 | struct ti_i2c_firmware_rec *firmware_rec; |
806 | struct edgeport_fw_hdr *fw_hdr = (struct edgeport_fw_hdr *)fw->data; |
807 | |
808 | /* |
809 | * In order to update the I2C firmware we must change the type 2 record |
810 | * to type 0xF2. This will force the UMP to come up in Boot Mode. |
811 | * Then while in boot mode, the driver will download the latest |
812 | * firmware (padded to 15.5k) into the UMP ram. And finally when the |
813 | * device comes back up in download mode the driver will cause the new |
814 | * firmware to be copied from the UMP Ram to I2C and the firmware will |
815 | * update the record type from 0xf2 to 0x02. |
816 | */ |
817 | |
818 | /* |
819 | * Allocate a 15.5k buffer + 2 bytes for version number (Firmware |
820 | * Record) |
821 | */ |
822 | buffer_size = (((1024 * 16) - 512 ) + |
823 | sizeof(struct ti_i2c_firmware_rec)); |
824 | |
825 | buffer = kmalloc(size: buffer_size, GFP_KERNEL); |
826 | if (!buffer) |
827 | return -ENOMEM; |
828 | |
829 | /* Set entire image of 0xffs */ |
830 | memset(buffer, 0xff, buffer_size); |
831 | |
832 | /* Copy version number into firmware record */ |
833 | firmware_rec = (struct ti_i2c_firmware_rec *)buffer; |
834 | |
835 | firmware_rec->Ver_Major = fw_hdr->major_version; |
836 | firmware_rec->Ver_Minor = fw_hdr->minor_version; |
837 | |
838 | /* Pointer to fw_down memory image */ |
839 | img_header = (struct ti_i2c_image_header *)&fw->data[4]; |
840 | |
841 | memcpy(buffer + sizeof(struct ti_i2c_firmware_rec), |
842 | &fw->data[4 + sizeof(struct ti_i2c_image_header)], |
843 | le16_to_cpu(img_header->Length)); |
844 | |
845 | for (i=0; i < buffer_size; i++) { |
846 | cs = (u8)(cs + buffer[i]); |
847 | } |
848 | |
849 | kfree(objp: buffer); |
850 | |
851 | /* Build new header */ |
852 | i2c_header = (struct ti_i2c_desc *)header; |
853 | firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data; |
854 | |
855 | i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK; |
856 | i2c_header->Size = cpu_to_le16(buffer_size); |
857 | i2c_header->CheckSum = cs; |
858 | firmware_rec->Ver_Major = fw_hdr->major_version; |
859 | firmware_rec->Ver_Minor = fw_hdr->minor_version; |
860 | |
861 | return 0; |
862 | } |
863 | |
864 | /* Try to figure out what type of I2c we have */ |
865 | static int i2c_type_bootmode(struct edgeport_serial *serial) |
866 | { |
867 | struct device *dev = &serial->serial->dev->dev; |
868 | int status; |
869 | u8 *data; |
870 | |
871 | data = kmalloc(size: 1, GFP_KERNEL); |
872 | if (!data) |
873 | return -ENOMEM; |
874 | |
875 | /* Try to read type 2 */ |
876 | status = ti_vread_sync(dev: serial->serial->dev, UMPC_MEMORY_READ, |
877 | DTK_ADDR_SPACE_I2C_TYPE_II, index: 0, data, size: 0x01); |
878 | if (status) |
879 | dev_dbg(dev, "%s - read 2 status error = %d\n" , __func__, status); |
880 | else |
881 | dev_dbg(dev, "%s - read 2 data = 0x%x\n" , __func__, *data); |
882 | if ((!status) && (*data == UMP5152 || *data == UMP3410)) { |
883 | dev_dbg(dev, "%s - ROM_TYPE_II\n" , __func__); |
884 | serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; |
885 | goto out; |
886 | } |
887 | |
888 | /* Try to read type 3 */ |
889 | status = ti_vread_sync(dev: serial->serial->dev, UMPC_MEMORY_READ, |
890 | DTK_ADDR_SPACE_I2C_TYPE_III, index: 0, data, size: 0x01); |
891 | if (status) |
892 | dev_dbg(dev, "%s - read 3 status error = %d\n" , __func__, status); |
893 | else |
894 | dev_dbg(dev, "%s - read 2 data = 0x%x\n" , __func__, *data); |
895 | if ((!status) && (*data == UMP5152 || *data == UMP3410)) { |
896 | dev_dbg(dev, "%s - ROM_TYPE_III\n" , __func__); |
897 | serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III; |
898 | goto out; |
899 | } |
900 | |
901 | dev_dbg(dev, "%s - Unknown\n" , __func__); |
902 | serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; |
903 | status = -ENODEV; |
904 | out: |
905 | kfree(objp: data); |
906 | return status; |
907 | } |
908 | |
909 | static int bulk_xfer(struct usb_serial *serial, void *buffer, |
910 | int length, int *num_sent) |
911 | { |
912 | int status; |
913 | |
914 | status = usb_bulk_msg(usb_dev: serial->dev, |
915 | usb_sndbulkpipe(serial->dev, |
916 | serial->port[0]->bulk_out_endpointAddress), |
917 | data: buffer, len: length, actual_length: num_sent, timeout: 1000); |
918 | return status; |
919 | } |
920 | |
921 | /* Download given firmware image to the device (IN BOOT MODE) */ |
922 | static int download_code(struct edgeport_serial *serial, u8 *image, |
923 | int image_length) |
924 | { |
925 | int status = 0; |
926 | int pos; |
927 | int transfer; |
928 | int done; |
929 | |
930 | /* Transfer firmware image */ |
931 | for (pos = 0; pos < image_length; ) { |
932 | /* Read the next buffer from file */ |
933 | transfer = image_length - pos; |
934 | if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE) |
935 | transfer = EDGE_FW_BULK_MAX_PACKET_SIZE; |
936 | |
937 | /* Transfer data */ |
938 | status = bulk_xfer(serial: serial->serial, buffer: &image[pos], |
939 | length: transfer, num_sent: &done); |
940 | if (status) |
941 | break; |
942 | /* Advance buffer pointer */ |
943 | pos += done; |
944 | } |
945 | |
946 | return status; |
947 | } |
948 | |
949 | /* FIXME!!! */ |
950 | static int config_boot_dev(struct usb_device *dev) |
951 | { |
952 | return 0; |
953 | } |
954 | |
955 | static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc) |
956 | { |
957 | return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev); |
958 | } |
959 | |
960 | static int check_fw_sanity(struct edgeport_serial *serial, |
961 | const struct firmware *fw) |
962 | { |
963 | u16 length_total; |
964 | u8 checksum = 0; |
965 | int pos; |
966 | struct device *dev = &serial->serial->interface->dev; |
967 | struct edgeport_fw_hdr *fw_hdr = (struct edgeport_fw_hdr *)fw->data; |
968 | |
969 | if (fw->size < sizeof(struct edgeport_fw_hdr)) { |
970 | dev_err(dev, "incomplete fw header\n" ); |
971 | return -EINVAL; |
972 | } |
973 | |
974 | length_total = le16_to_cpu(fw_hdr->length) + |
975 | sizeof(struct edgeport_fw_hdr); |
976 | |
977 | if (fw->size != length_total) { |
978 | dev_err(dev, "bad fw size (expected: %u, got: %zu)\n" , |
979 | length_total, fw->size); |
980 | return -EINVAL; |
981 | } |
982 | |
983 | for (pos = sizeof(struct edgeport_fw_hdr); pos < fw->size; ++pos) |
984 | checksum += fw->data[pos]; |
985 | |
986 | if (checksum != fw_hdr->checksum) { |
987 | dev_err(dev, "bad fw checksum (expected: 0x%x, got: 0x%x)\n" , |
988 | fw_hdr->checksum, checksum); |
989 | return -EINVAL; |
990 | } |
991 | |
992 | return 0; |
993 | } |
994 | |
995 | /* |
996 | * DownloadTIFirmware - Download run-time operating firmware to the TI5052 |
997 | * |
998 | * This routine downloads the main operating code into the TI5052, using the |
999 | * boot code already burned into E2PROM or ROM. |
1000 | */ |
1001 | static int download_fw(struct edgeport_serial *serial) |
1002 | { |
1003 | struct device *dev = &serial->serial->interface->dev; |
1004 | int status = 0; |
1005 | struct usb_interface_descriptor *interface; |
1006 | const struct firmware *fw; |
1007 | const char *fw_name = "edgeport/down3.bin" ; |
1008 | struct edgeport_fw_hdr *fw_hdr; |
1009 | |
1010 | status = request_firmware(fw: &fw, name: fw_name, device: dev); |
1011 | if (status) { |
1012 | dev_err(dev, "Failed to load image \"%s\" err %d\n" , |
1013 | fw_name, status); |
1014 | return status; |
1015 | } |
1016 | |
1017 | if (check_fw_sanity(serial, fw)) { |
1018 | status = -EINVAL; |
1019 | goto out; |
1020 | } |
1021 | |
1022 | fw_hdr = (struct edgeport_fw_hdr *)fw->data; |
1023 | |
1024 | /* If on-board version is newer, "fw_version" will be updated later. */ |
1025 | serial->fw_version = (fw_hdr->major_version << 8) + |
1026 | fw_hdr->minor_version; |
1027 | |
1028 | /* |
1029 | * This routine is entered by both the BOOT mode and the Download mode |
1030 | * We can determine which code is running by the reading the config |
1031 | * descriptor and if we have only one bulk pipe it is in boot mode |
1032 | */ |
1033 | serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP; |
1034 | |
1035 | /* Default to type 2 i2c */ |
1036 | serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; |
1037 | |
1038 | status = choose_config(dev: serial->serial->dev); |
1039 | if (status) |
1040 | goto out; |
1041 | |
1042 | interface = &serial->serial->interface->cur_altsetting->desc; |
1043 | if (!interface) { |
1044 | dev_err(dev, "%s - no interface set, error!\n" , __func__); |
1045 | status = -ENODEV; |
1046 | goto out; |
1047 | } |
1048 | |
1049 | /* |
1050 | * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING |
1051 | * if we have more than one endpoint we are definitely in download |
1052 | * mode |
1053 | */ |
1054 | if (interface->bNumEndpoints > 1) { |
1055 | serial->product_info.TiMode = TI_MODE_DOWNLOAD; |
1056 | status = do_download_mode(serial, fw); |
1057 | } else { |
1058 | /* Otherwise we will remain in configuring mode */ |
1059 | serial->product_info.TiMode = TI_MODE_CONFIGURING; |
1060 | status = do_boot_mode(serial, fw); |
1061 | } |
1062 | |
1063 | out: |
1064 | release_firmware(fw); |
1065 | return status; |
1066 | } |
1067 | |
1068 | static int do_download_mode(struct edgeport_serial *serial, |
1069 | const struct firmware *fw) |
1070 | { |
1071 | struct device *dev = &serial->serial->interface->dev; |
1072 | int status = 0; |
1073 | int start_address; |
1074 | struct edge_ti_manuf_descriptor *ti_manuf_desc; |
1075 | int download_cur_ver; |
1076 | int download_new_ver; |
1077 | struct edgeport_fw_hdr *fw_hdr = (struct edgeport_fw_hdr *)fw->data; |
1078 | struct ti_i2c_desc *rom_desc; |
1079 | |
1080 | dev_dbg(dev, "%s - RUNNING IN DOWNLOAD MODE\n" , __func__); |
1081 | |
1082 | status = check_i2c_image(serial); |
1083 | if (status) { |
1084 | dev_dbg(dev, "%s - DOWNLOAD MODE -- BAD I2C\n" , __func__); |
1085 | return status; |
1086 | } |
1087 | |
1088 | /* |
1089 | * Validate Hardware version number |
1090 | * Read Manufacturing Descriptor from TI Based Edgeport |
1091 | */ |
1092 | ti_manuf_desc = kmalloc(size: sizeof(*ti_manuf_desc), GFP_KERNEL); |
1093 | if (!ti_manuf_desc) |
1094 | return -ENOMEM; |
1095 | |
1096 | status = get_manuf_info(serial, buffer: (u8 *)ti_manuf_desc); |
1097 | if (status) { |
1098 | kfree(objp: ti_manuf_desc); |
1099 | return status; |
1100 | } |
1101 | |
1102 | /* Check version number of ION descriptor */ |
1103 | if (!ignore_cpu_rev && ti_cpu_rev(desc: ti_manuf_desc) < 2) { |
1104 | dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n" , |
1105 | __func__, ti_cpu_rev(ti_manuf_desc)); |
1106 | kfree(objp: ti_manuf_desc); |
1107 | return -EINVAL; |
1108 | } |
1109 | |
1110 | rom_desc = kmalloc(size: sizeof(*rom_desc), GFP_KERNEL); |
1111 | if (!rom_desc) { |
1112 | kfree(objp: ti_manuf_desc); |
1113 | return -ENOMEM; |
1114 | } |
1115 | |
1116 | /* Search for type 2 record (firmware record) */ |
1117 | start_address = get_descriptor_addr(serial, |
1118 | I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc); |
1119 | if (start_address != 0) { |
1120 | struct ti_i2c_firmware_rec *firmware_version; |
1121 | u8 *record; |
1122 | |
1123 | dev_dbg(dev, "%s - Found Type FIRMWARE (Type 2) record\n" , |
1124 | __func__); |
1125 | |
1126 | firmware_version = kmalloc(size: sizeof(*firmware_version), |
1127 | GFP_KERNEL); |
1128 | if (!firmware_version) { |
1129 | kfree(objp: rom_desc); |
1130 | kfree(objp: ti_manuf_desc); |
1131 | return -ENOMEM; |
1132 | } |
1133 | |
1134 | /* |
1135 | * Validate version number |
1136 | * Read the descriptor data |
1137 | */ |
1138 | status = read_rom(serial, start_address: start_address + |
1139 | sizeof(struct ti_i2c_desc), |
1140 | length: sizeof(struct ti_i2c_firmware_rec), |
1141 | buffer: (u8 *)firmware_version); |
1142 | if (status) { |
1143 | kfree(objp: firmware_version); |
1144 | kfree(objp: rom_desc); |
1145 | kfree(objp: ti_manuf_desc); |
1146 | return status; |
1147 | } |
1148 | |
1149 | /* |
1150 | * Check version number of download with current |
1151 | * version in I2c |
1152 | */ |
1153 | download_cur_ver = (firmware_version->Ver_Major << 8) + |
1154 | (firmware_version->Ver_Minor); |
1155 | download_new_ver = (fw_hdr->major_version << 8) + |
1156 | (fw_hdr->minor_version); |
1157 | |
1158 | dev_dbg(dev, "%s - >> FW Versions Device %d.%d Driver %d.%d\n" , |
1159 | __func__, firmware_version->Ver_Major, |
1160 | firmware_version->Ver_Minor, |
1161 | fw_hdr->major_version, fw_hdr->minor_version); |
1162 | |
1163 | /* |
1164 | * Check if we have an old version in the I2C and |
1165 | * update if necessary |
1166 | */ |
1167 | if (download_cur_ver < download_new_ver) { |
1168 | dev_dbg(dev, "%s - Update I2C dld from %d.%d to %d.%d\n" , |
1169 | __func__, |
1170 | firmware_version->Ver_Major, |
1171 | firmware_version->Ver_Minor, |
1172 | fw_hdr->major_version, |
1173 | fw_hdr->minor_version); |
1174 | |
1175 | record = kmalloc(size: 1, GFP_KERNEL); |
1176 | if (!record) { |
1177 | kfree(objp: firmware_version); |
1178 | kfree(objp: rom_desc); |
1179 | kfree(objp: ti_manuf_desc); |
1180 | return -ENOMEM; |
1181 | } |
1182 | /* |
1183 | * In order to update the I2C firmware we must |
1184 | * change the type 2 record to type 0xF2. This |
1185 | * will force the UMP to come up in Boot Mode. |
1186 | * Then while in boot mode, the driver will |
1187 | * download the latest firmware (padded to |
1188 | * 15.5k) into the UMP ram. Finally when the |
1189 | * device comes back up in download mode the |
1190 | * driver will cause the new firmware to be |
1191 | * copied from the UMP Ram to I2C and the |
1192 | * firmware will update the record type from |
1193 | * 0xf2 to 0x02. |
1194 | */ |
1195 | *record = I2C_DESC_TYPE_FIRMWARE_BLANK; |
1196 | |
1197 | /* |
1198 | * Change the I2C Firmware record type to |
1199 | * 0xf2 to trigger an update |
1200 | */ |
1201 | status = write_rom(serial, start_address, |
1202 | length: sizeof(*record), buffer: record); |
1203 | if (status) { |
1204 | kfree(objp: record); |
1205 | kfree(objp: firmware_version); |
1206 | kfree(objp: rom_desc); |
1207 | kfree(objp: ti_manuf_desc); |
1208 | return status; |
1209 | } |
1210 | |
1211 | /* |
1212 | * verify the write -- must do this in order |
1213 | * for write to complete before we do the |
1214 | * hardware reset |
1215 | */ |
1216 | status = read_rom(serial, |
1217 | start_address, |
1218 | length: sizeof(*record), |
1219 | buffer: record); |
1220 | if (status) { |
1221 | kfree(objp: record); |
1222 | kfree(objp: firmware_version); |
1223 | kfree(objp: rom_desc); |
1224 | kfree(objp: ti_manuf_desc); |
1225 | return status; |
1226 | } |
1227 | |
1228 | if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) { |
1229 | dev_err(dev, "%s - error resetting device\n" , |
1230 | __func__); |
1231 | kfree(objp: record); |
1232 | kfree(objp: firmware_version); |
1233 | kfree(objp: rom_desc); |
1234 | kfree(objp: ti_manuf_desc); |
1235 | return -ENODEV; |
1236 | } |
1237 | |
1238 | dev_dbg(dev, "%s - HARDWARE RESET\n" , __func__); |
1239 | |
1240 | /* Reset UMP -- Back to BOOT MODE */ |
1241 | status = ti_vsend_sync(dev: serial->serial->dev, |
1242 | UMPC_HARDWARE_RESET, |
1243 | value: 0, index: 0, NULL, size: 0, |
1244 | TI_VSEND_TIMEOUT_DEFAULT); |
1245 | |
1246 | dev_dbg(dev, "%s - HARDWARE RESET return %d\n" , |
1247 | __func__, status); |
1248 | |
1249 | /* return an error on purpose. */ |
1250 | kfree(objp: record); |
1251 | kfree(objp: firmware_version); |
1252 | kfree(objp: rom_desc); |
1253 | kfree(objp: ti_manuf_desc); |
1254 | return -ENODEV; |
1255 | } |
1256 | /* Same or newer fw version is already loaded */ |
1257 | serial->fw_version = download_cur_ver; |
1258 | kfree(objp: firmware_version); |
1259 | } |
1260 | /* Search for type 0xF2 record (firmware blank record) */ |
1261 | else { |
1262 | start_address = get_descriptor_addr(serial, |
1263 | I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc); |
1264 | if (start_address != 0) { |
1265 | #define (sizeof(struct ti_i2c_desc) + \ |
1266 | sizeof(struct ti_i2c_firmware_rec)) |
1267 | u8 *; |
1268 | u8 *; |
1269 | |
1270 | header = kmalloc(HEADER_SIZE, GFP_KERNEL); |
1271 | if (!header) { |
1272 | kfree(objp: rom_desc); |
1273 | kfree(objp: ti_manuf_desc); |
1274 | return -ENOMEM; |
1275 | } |
1276 | |
1277 | vheader = kmalloc(HEADER_SIZE, GFP_KERNEL); |
1278 | if (!vheader) { |
1279 | kfree(objp: header); |
1280 | kfree(objp: rom_desc); |
1281 | kfree(objp: ti_manuf_desc); |
1282 | return -ENOMEM; |
1283 | } |
1284 | |
1285 | dev_dbg(dev, "%s - Found Type BLANK FIRMWARE (Type F2) record\n" , |
1286 | __func__); |
1287 | |
1288 | /* |
1289 | * In order to update the I2C firmware we must change |
1290 | * the type 2 record to type 0xF2. This will force the |
1291 | * UMP to come up in Boot Mode. Then while in boot |
1292 | * mode, the driver will download the latest firmware |
1293 | * (padded to 15.5k) into the UMP ram. Finally when the |
1294 | * device comes back up in download mode the driver |
1295 | * will cause the new firmware to be copied from the |
1296 | * UMP Ram to I2C and the firmware will update the |
1297 | * record type from 0xf2 to 0x02. |
1298 | */ |
1299 | status = build_i2c_fw_hdr(header, fw); |
1300 | if (status) { |
1301 | kfree(objp: vheader); |
1302 | kfree(objp: header); |
1303 | kfree(objp: rom_desc); |
1304 | kfree(objp: ti_manuf_desc); |
1305 | return -EINVAL; |
1306 | } |
1307 | |
1308 | /* |
1309 | * Update I2C with type 0xf2 record with correct |
1310 | * size and checksum |
1311 | */ |
1312 | status = write_rom(serial, |
1313 | start_address, |
1314 | HEADER_SIZE, |
1315 | buffer: header); |
1316 | if (status) { |
1317 | kfree(objp: vheader); |
1318 | kfree(objp: header); |
1319 | kfree(objp: rom_desc); |
1320 | kfree(objp: ti_manuf_desc); |
1321 | return -EINVAL; |
1322 | } |
1323 | |
1324 | /* |
1325 | * verify the write -- must do this in order for |
1326 | * write to complete before we do the hardware reset |
1327 | */ |
1328 | status = read_rom(serial, start_address, |
1329 | HEADER_SIZE, buffer: vheader); |
1330 | |
1331 | if (status) { |
1332 | dev_dbg(dev, "%s - can't read header back\n" , |
1333 | __func__); |
1334 | kfree(objp: vheader); |
1335 | kfree(objp: header); |
1336 | kfree(objp: rom_desc); |
1337 | kfree(objp: ti_manuf_desc); |
1338 | return status; |
1339 | } |
1340 | if (memcmp(p: vheader, q: header, HEADER_SIZE)) { |
1341 | dev_dbg(dev, "%s - write download record failed\n" , |
1342 | __func__); |
1343 | kfree(objp: vheader); |
1344 | kfree(objp: header); |
1345 | kfree(objp: rom_desc); |
1346 | kfree(objp: ti_manuf_desc); |
1347 | return -EINVAL; |
1348 | } |
1349 | |
1350 | kfree(objp: vheader); |
1351 | kfree(objp: header); |
1352 | |
1353 | dev_dbg(dev, "%s - Start firmware update\n" , __func__); |
1354 | |
1355 | /* Tell firmware to copy download image into I2C */ |
1356 | status = ti_vsend_sync(dev: serial->serial->dev, |
1357 | UMPC_COPY_DNLD_TO_I2C, |
1358 | value: 0, index: 0, NULL, size: 0, |
1359 | TI_VSEND_TIMEOUT_FW_DOWNLOAD); |
1360 | |
1361 | dev_dbg(dev, "%s - Update complete 0x%x\n" , __func__, |
1362 | status); |
1363 | if (status) { |
1364 | dev_err(dev, |
1365 | "%s - UMPC_COPY_DNLD_TO_I2C failed\n" , |
1366 | __func__); |
1367 | kfree(objp: rom_desc); |
1368 | kfree(objp: ti_manuf_desc); |
1369 | return status; |
1370 | } |
1371 | } |
1372 | } |
1373 | |
1374 | /* The device is running the download code */ |
1375 | kfree(objp: rom_desc); |
1376 | kfree(objp: ti_manuf_desc); |
1377 | return 0; |
1378 | } |
1379 | |
1380 | static int do_boot_mode(struct edgeport_serial *serial, |
1381 | const struct firmware *fw) |
1382 | { |
1383 | struct device *dev = &serial->serial->interface->dev; |
1384 | int status = 0; |
1385 | struct edge_ti_manuf_descriptor *ti_manuf_desc; |
1386 | struct edgeport_fw_hdr *fw_hdr = (struct edgeport_fw_hdr *)fw->data; |
1387 | |
1388 | dev_dbg(dev, "%s - RUNNING IN BOOT MODE\n" , __func__); |
1389 | |
1390 | /* Configure the TI device so we can use the BULK pipes for download */ |
1391 | status = config_boot_dev(dev: serial->serial->dev); |
1392 | if (status) |
1393 | return status; |
1394 | |
1395 | if (le16_to_cpu(serial->serial->dev->descriptor.idVendor) |
1396 | != USB_VENDOR_ID_ION) { |
1397 | dev_dbg(dev, "%s - VID = 0x%x\n" , __func__, |
1398 | le16_to_cpu(serial->serial->dev->descriptor.idVendor)); |
1399 | serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; |
1400 | goto stayinbootmode; |
1401 | } |
1402 | |
1403 | /* |
1404 | * We have an ION device (I2c Must be programmed) |
1405 | * Determine I2C image type |
1406 | */ |
1407 | if (i2c_type_bootmode(serial)) |
1408 | goto stayinbootmode; |
1409 | |
1410 | /* Check for ION Vendor ID and that the I2C is valid */ |
1411 | if (!check_i2c_image(serial)) { |
1412 | struct ti_i2c_image_header *; |
1413 | int i; |
1414 | u8 cs = 0; |
1415 | u8 *buffer; |
1416 | int buffer_size; |
1417 | |
1418 | /* |
1419 | * Validate Hardware version number |
1420 | * Read Manufacturing Descriptor from TI Based Edgeport |
1421 | */ |
1422 | ti_manuf_desc = kmalloc(size: sizeof(*ti_manuf_desc), GFP_KERNEL); |
1423 | if (!ti_manuf_desc) |
1424 | return -ENOMEM; |
1425 | |
1426 | status = get_manuf_info(serial, buffer: (u8 *)ti_manuf_desc); |
1427 | if (status) { |
1428 | kfree(objp: ti_manuf_desc); |
1429 | goto stayinbootmode; |
1430 | } |
1431 | |
1432 | /* Check for version 2 */ |
1433 | if (!ignore_cpu_rev && ti_cpu_rev(desc: ti_manuf_desc) < 2) { |
1434 | dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n" , |
1435 | __func__, ti_cpu_rev(ti_manuf_desc)); |
1436 | kfree(objp: ti_manuf_desc); |
1437 | goto stayinbootmode; |
1438 | } |
1439 | |
1440 | kfree(objp: ti_manuf_desc); |
1441 | |
1442 | /* |
1443 | * In order to update the I2C firmware we must change the type |
1444 | * 2 record to type 0xF2. This will force the UMP to come up |
1445 | * in Boot Mode. Then while in boot mode, the driver will |
1446 | * download the latest firmware (padded to 15.5k) into the |
1447 | * UMP ram. Finally when the device comes back up in download |
1448 | * mode the driver will cause the new firmware to be copied |
1449 | * from the UMP Ram to I2C and the firmware will update the |
1450 | * record type from 0xf2 to 0x02. |
1451 | * |
1452 | * Do we really have to copy the whole firmware image, |
1453 | * or could we do this in place! |
1454 | */ |
1455 | |
1456 | /* Allocate a 15.5k buffer + 3 byte header */ |
1457 | buffer_size = (((1024 * 16) - 512) + |
1458 | sizeof(struct ti_i2c_image_header)); |
1459 | buffer = kmalloc(size: buffer_size, GFP_KERNEL); |
1460 | if (!buffer) |
1461 | return -ENOMEM; |
1462 | |
1463 | /* Initialize the buffer to 0xff (pad the buffer) */ |
1464 | memset(buffer, 0xff, buffer_size); |
1465 | memcpy(buffer, &fw->data[4], fw->size - 4); |
1466 | |
1467 | for (i = sizeof(struct ti_i2c_image_header); |
1468 | i < buffer_size; i++) { |
1469 | cs = (u8)(cs + buffer[i]); |
1470 | } |
1471 | |
1472 | header = (struct ti_i2c_image_header *)buffer; |
1473 | |
1474 | /* update length and checksum after padding */ |
1475 | header->Length = cpu_to_le16((u16)(buffer_size - |
1476 | sizeof(struct ti_i2c_image_header))); |
1477 | header->CheckSum = cs; |
1478 | |
1479 | /* Download the operational code */ |
1480 | dev_dbg(dev, "%s - Downloading operational code image version %d.%d (TI UMP)\n" , |
1481 | __func__, |
1482 | fw_hdr->major_version, fw_hdr->minor_version); |
1483 | status = download_code(serial, image: buffer, image_length: buffer_size); |
1484 | |
1485 | kfree(objp: buffer); |
1486 | |
1487 | if (status) { |
1488 | dev_dbg(dev, "%s - Error downloading operational code image\n" , __func__); |
1489 | return status; |
1490 | } |
1491 | |
1492 | /* Device will reboot */ |
1493 | serial->product_info.TiMode = TI_MODE_TRANSITIONING; |
1494 | |
1495 | dev_dbg(dev, "%s - Download successful -- Device rebooting...\n" , __func__); |
1496 | |
1497 | return 1; |
1498 | } |
1499 | |
1500 | stayinbootmode: |
1501 | /* Eprom is invalid or blank stay in boot mode */ |
1502 | dev_dbg(dev, "%s - STAYING IN BOOT MODE\n" , __func__); |
1503 | serial->product_info.TiMode = TI_MODE_BOOT; |
1504 | |
1505 | return 1; |
1506 | } |
1507 | |
1508 | static int ti_do_config(struct edgeport_port *port, int feature, int on) |
1509 | { |
1510 | on = !!on; /* 1 or 0 not bitmask */ |
1511 | |
1512 | return send_port_cmd(port: port->port, command: feature, value: on, NULL, size: 0); |
1513 | } |
1514 | |
1515 | static int restore_mcr(struct edgeport_port *port, u8 mcr) |
1516 | { |
1517 | int status = 0; |
1518 | |
1519 | dev_dbg(&port->port->dev, "%s - %x\n" , __func__, mcr); |
1520 | |
1521 | status = ti_do_config(port, UMPC_SET_CLR_DTR, on: mcr & MCR_DTR); |
1522 | if (status) |
1523 | return status; |
1524 | status = ti_do_config(port, UMPC_SET_CLR_RTS, on: mcr & MCR_RTS); |
1525 | if (status) |
1526 | return status; |
1527 | return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, on: mcr & MCR_LOOPBACK); |
1528 | } |
1529 | |
1530 | /* Convert TI LSR to standard UART flags */ |
1531 | static u8 map_line_status(u8 ti_lsr) |
1532 | { |
1533 | u8 lsr = 0; |
1534 | |
1535 | #define MAP_FLAG(flagUmp, flagUart) \ |
1536 | if (ti_lsr & flagUmp) \ |
1537 | lsr |= flagUart; |
1538 | |
1539 | MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */ |
1540 | MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */ |
1541 | MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */ |
1542 | MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */ |
1543 | MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* rx data available */ |
1544 | MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* tx hold reg empty */ |
1545 | |
1546 | #undef MAP_FLAG |
1547 | |
1548 | return lsr; |
1549 | } |
1550 | |
1551 | static void handle_new_msr(struct edgeport_port *edge_port, u8 msr) |
1552 | { |
1553 | struct async_icount *icount; |
1554 | struct tty_struct *tty; |
1555 | |
1556 | dev_dbg(&edge_port->port->dev, "%s - %02x\n" , __func__, msr); |
1557 | |
1558 | if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | |
1559 | EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { |
1560 | icount = &edge_port->port->icount; |
1561 | |
1562 | /* update input line counters */ |
1563 | if (msr & EDGEPORT_MSR_DELTA_CTS) |
1564 | icount->cts++; |
1565 | if (msr & EDGEPORT_MSR_DELTA_DSR) |
1566 | icount->dsr++; |
1567 | if (msr & EDGEPORT_MSR_DELTA_CD) |
1568 | icount->dcd++; |
1569 | if (msr & EDGEPORT_MSR_DELTA_RI) |
1570 | icount->rng++; |
1571 | wake_up_interruptible(&edge_port->port->port.delta_msr_wait); |
1572 | } |
1573 | |
1574 | /* Save the new modem status */ |
1575 | edge_port->shadow_msr = msr & 0xf0; |
1576 | |
1577 | tty = tty_port_tty_get(port: &edge_port->port->port); |
1578 | /* handle CTS flow control */ |
1579 | if (tty && C_CRTSCTS(tty)) { |
1580 | if (msr & EDGEPORT_MSR_CTS) |
1581 | tty_wakeup(tty); |
1582 | } |
1583 | tty_kref_put(tty); |
1584 | } |
1585 | |
1586 | static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data, |
1587 | u8 lsr, u8 data) |
1588 | { |
1589 | struct async_icount *icount; |
1590 | u8 new_lsr = (u8)(lsr & (u8)(LSR_OVER_ERR | LSR_PAR_ERR | |
1591 | LSR_FRM_ERR | LSR_BREAK)); |
1592 | |
1593 | dev_dbg(&edge_port->port->dev, "%s - %02x\n" , __func__, new_lsr); |
1594 | |
1595 | edge_port->shadow_lsr = lsr; |
1596 | |
1597 | if (new_lsr & LSR_BREAK) |
1598 | /* |
1599 | * Parity and Framing errors only count if they |
1600 | * occur exclusive of a break being received. |
1601 | */ |
1602 | new_lsr &= (u8)(LSR_OVER_ERR | LSR_BREAK); |
1603 | |
1604 | /* Place LSR data byte into Rx buffer */ |
1605 | if (lsr_data) |
1606 | edge_tty_recv(port: edge_port->port, data: &data, length: 1); |
1607 | |
1608 | /* update input line counters */ |
1609 | icount = &edge_port->port->icount; |
1610 | if (new_lsr & LSR_BREAK) |
1611 | icount->brk++; |
1612 | if (new_lsr & LSR_OVER_ERR) |
1613 | icount->overrun++; |
1614 | if (new_lsr & LSR_PAR_ERR) |
1615 | icount->parity++; |
1616 | if (new_lsr & LSR_FRM_ERR) |
1617 | icount->frame++; |
1618 | } |
1619 | |
1620 | static void edge_interrupt_callback(struct urb *urb) |
1621 | { |
1622 | struct edgeport_serial *edge_serial = urb->context; |
1623 | struct usb_serial_port *port; |
1624 | struct edgeport_port *edge_port; |
1625 | struct device *dev; |
1626 | unsigned char *data = urb->transfer_buffer; |
1627 | int length = urb->actual_length; |
1628 | int port_number; |
1629 | int function; |
1630 | int retval; |
1631 | u8 lsr; |
1632 | u8 msr; |
1633 | int status = urb->status; |
1634 | |
1635 | switch (status) { |
1636 | case 0: |
1637 | /* success */ |
1638 | break; |
1639 | case -ECONNRESET: |
1640 | case -ENOENT: |
1641 | case -ESHUTDOWN: |
1642 | /* this urb is terminated, clean up */ |
1643 | dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n" , |
1644 | __func__, status); |
1645 | return; |
1646 | default: |
1647 | dev_err(&urb->dev->dev, "%s - nonzero urb status received: " |
1648 | "%d\n" , __func__, status); |
1649 | goto exit; |
1650 | } |
1651 | |
1652 | if (!length) { |
1653 | dev_dbg(&urb->dev->dev, "%s - no data in urb\n" , __func__); |
1654 | goto exit; |
1655 | } |
1656 | |
1657 | dev = &edge_serial->serial->dev->dev; |
1658 | usb_serial_debug_data(dev, function: __func__, size: length, data); |
1659 | |
1660 | if (length != 2) { |
1661 | dev_dbg(dev, "%s - expecting packet of size 2, got %d\n" , __func__, length); |
1662 | goto exit; |
1663 | } |
1664 | |
1665 | port_number = TIUMP_GET_PORT_FROM_CODE(data[0]); |
1666 | function = TIUMP_GET_FUNC_FROM_CODE(data[0]); |
1667 | dev_dbg(dev, "%s - port_number %d, function %d, info 0x%x\n" , __func__, |
1668 | port_number, function, data[1]); |
1669 | |
1670 | if (port_number >= edge_serial->serial->num_ports) { |
1671 | dev_err(dev, "bad port number %d\n" , port_number); |
1672 | goto exit; |
1673 | } |
1674 | |
1675 | port = edge_serial->serial->port[port_number]; |
1676 | edge_port = usb_get_serial_port_data(port); |
1677 | if (!edge_port) { |
1678 | dev_dbg(dev, "%s - edge_port not found\n" , __func__); |
1679 | return; |
1680 | } |
1681 | switch (function) { |
1682 | case TIUMP_INTERRUPT_CODE_LSR: |
1683 | lsr = map_line_status(ti_lsr: data[1]); |
1684 | if (lsr & UMP_UART_LSR_DATA_MASK) { |
1685 | /* |
1686 | * Save the LSR event for bulk read completion routine |
1687 | */ |
1688 | dev_dbg(dev, "%s - LSR Event Port %u LSR Status = %02x\n" , |
1689 | __func__, port_number, lsr); |
1690 | edge_port->lsr_event = 1; |
1691 | edge_port->lsr_mask = lsr; |
1692 | } else { |
1693 | dev_dbg(dev, "%s - ===== Port %d LSR Status = %02x ======\n" , |
1694 | __func__, port_number, lsr); |
1695 | handle_new_lsr(edge_port, lsr_data: 0, lsr, data: 0); |
1696 | } |
1697 | break; |
1698 | |
1699 | case TIUMP_INTERRUPT_CODE_MSR: /* MSR */ |
1700 | /* Copy MSR from UMP */ |
1701 | msr = data[1]; |
1702 | dev_dbg(dev, "%s - ===== Port %u MSR Status = %02x ======\n" , |
1703 | __func__, port_number, msr); |
1704 | handle_new_msr(edge_port, msr); |
1705 | break; |
1706 | |
1707 | default: |
1708 | dev_err(&urb->dev->dev, |
1709 | "%s - Unknown Interrupt code from UMP %x\n" , |
1710 | __func__, data[1]); |
1711 | break; |
1712 | |
1713 | } |
1714 | |
1715 | exit: |
1716 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
1717 | if (retval) |
1718 | dev_err(&urb->dev->dev, |
1719 | "%s - usb_submit_urb failed with result %d\n" , |
1720 | __func__, retval); |
1721 | } |
1722 | |
1723 | static void edge_bulk_in_callback(struct urb *urb) |
1724 | { |
1725 | struct edgeport_port *edge_port = urb->context; |
1726 | struct device *dev = &edge_port->port->dev; |
1727 | unsigned char *data = urb->transfer_buffer; |
1728 | unsigned long flags; |
1729 | int retval = 0; |
1730 | int port_number; |
1731 | int status = urb->status; |
1732 | |
1733 | switch (status) { |
1734 | case 0: |
1735 | /* success */ |
1736 | break; |
1737 | case -ECONNRESET: |
1738 | case -ENOENT: |
1739 | case -ESHUTDOWN: |
1740 | /* this urb is terminated, clean up */ |
1741 | dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n" , __func__, status); |
1742 | return; |
1743 | default: |
1744 | dev_err(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n" , __func__, status); |
1745 | } |
1746 | |
1747 | if (status == -EPIPE) |
1748 | goto exit; |
1749 | |
1750 | if (status) { |
1751 | dev_err(&urb->dev->dev, "%s - stopping read!\n" , __func__); |
1752 | return; |
1753 | } |
1754 | |
1755 | port_number = edge_port->port->port_number; |
1756 | |
1757 | if (urb->actual_length > 0 && edge_port->lsr_event) { |
1758 | edge_port->lsr_event = 0; |
1759 | dev_dbg(dev, "%s ===== Port %u LSR Status = %02x, Data = %02x ======\n" , |
1760 | __func__, port_number, edge_port->lsr_mask, *data); |
1761 | handle_new_lsr(edge_port, lsr_data: 1, lsr: edge_port->lsr_mask, data: *data); |
1762 | /* Adjust buffer length/pointer */ |
1763 | --urb->actual_length; |
1764 | ++data; |
1765 | } |
1766 | |
1767 | if (urb->actual_length) { |
1768 | usb_serial_debug_data(dev, function: __func__, size: urb->actual_length, data); |
1769 | if (edge_port->close_pending) |
1770 | dev_dbg(dev, "%s - close pending, dropping data on the floor\n" , |
1771 | __func__); |
1772 | else |
1773 | edge_tty_recv(port: edge_port->port, data, |
1774 | length: urb->actual_length); |
1775 | edge_port->port->icount.rx += urb->actual_length; |
1776 | } |
1777 | |
1778 | exit: |
1779 | /* continue read unless stopped */ |
1780 | spin_lock_irqsave(&edge_port->ep_lock, flags); |
1781 | if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) |
1782 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
1783 | else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING) |
1784 | edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED; |
1785 | |
1786 | spin_unlock_irqrestore(lock: &edge_port->ep_lock, flags); |
1787 | if (retval) |
1788 | dev_err(dev, "%s - usb_submit_urb failed with result %d\n" , __func__, retval); |
1789 | } |
1790 | |
1791 | static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, |
1792 | int length) |
1793 | { |
1794 | int queued; |
1795 | |
1796 | queued = tty_insert_flip_string(port: &port->port, chars: data, size: length); |
1797 | if (queued < length) |
1798 | dev_err(&port->dev, "%s - dropping data, %d bytes lost\n" , |
1799 | __func__, length - queued); |
1800 | tty_flip_buffer_push(port: &port->port); |
1801 | } |
1802 | |
1803 | static void edge_bulk_out_callback(struct urb *urb) |
1804 | { |
1805 | struct usb_serial_port *port = urb->context; |
1806 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1807 | int status = urb->status; |
1808 | struct tty_struct *tty; |
1809 | |
1810 | edge_port->ep_write_urb_in_use = 0; |
1811 | |
1812 | switch (status) { |
1813 | case 0: |
1814 | /* success */ |
1815 | break; |
1816 | case -ECONNRESET: |
1817 | case -ENOENT: |
1818 | case -ESHUTDOWN: |
1819 | /* this urb is terminated, clean up */ |
1820 | dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n" , |
1821 | __func__, status); |
1822 | return; |
1823 | default: |
1824 | dev_err_console(port, "%s - nonzero write bulk status " |
1825 | "received: %d\n" , __func__, status); |
1826 | } |
1827 | |
1828 | /* send any buffered data */ |
1829 | tty = tty_port_tty_get(port: &port->port); |
1830 | edge_send(port, tty); |
1831 | tty_kref_put(tty); |
1832 | } |
1833 | |
1834 | static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) |
1835 | { |
1836 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1837 | struct edgeport_serial *edge_serial; |
1838 | struct usb_device *dev; |
1839 | struct urb *urb; |
1840 | int status; |
1841 | u16 open_settings; |
1842 | u8 transaction_timeout; |
1843 | |
1844 | if (edge_port == NULL) |
1845 | return -ENODEV; |
1846 | |
1847 | dev = port->serial->dev; |
1848 | |
1849 | /* turn off loopback */ |
1850 | status = ti_do_config(port: edge_port, UMPC_SET_CLR_LOOPBACK, on: 0); |
1851 | if (status) { |
1852 | dev_err(&port->dev, |
1853 | "%s - cannot send clear loopback command, %d\n" , |
1854 | __func__, status); |
1855 | return status; |
1856 | } |
1857 | |
1858 | /* set up the port settings */ |
1859 | if (tty) |
1860 | edge_set_termios(tty, port, old_termios: &tty->termios); |
1861 | |
1862 | /* open up the port */ |
1863 | |
1864 | /* milliseconds to timeout for DMA transfer */ |
1865 | transaction_timeout = 2; |
1866 | |
1867 | edge_port->ump_read_timeout = |
1868 | max(20, ((transaction_timeout * 3) / 2)); |
1869 | |
1870 | /* milliseconds to timeout for DMA transfer */ |
1871 | open_settings = (u8)(UMP_DMA_MODE_CONTINOUS | |
1872 | UMP_PIPE_TRANS_TIMEOUT_ENA | |
1873 | (transaction_timeout << 2)); |
1874 | |
1875 | dev_dbg(&port->dev, "%s - Sending UMPC_OPEN_PORT\n" , __func__); |
1876 | |
1877 | /* Tell TI to open and start the port */ |
1878 | status = send_port_cmd(port, UMPC_OPEN_PORT, value: open_settings, NULL, size: 0); |
1879 | if (status) { |
1880 | dev_err(&port->dev, "%s - cannot send open command, %d\n" , |
1881 | __func__, status); |
1882 | return status; |
1883 | } |
1884 | |
1885 | /* Start the DMA? */ |
1886 | status = send_port_cmd(port, UMPC_START_PORT, value: 0, NULL, size: 0); |
1887 | if (status) { |
1888 | dev_err(&port->dev, "%s - cannot send start DMA command, %d\n" , |
1889 | __func__, status); |
1890 | return status; |
1891 | } |
1892 | |
1893 | /* Clear TX and RX buffers in UMP */ |
1894 | status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN); |
1895 | if (status) { |
1896 | dev_err(&port->dev, |
1897 | "%s - cannot send clear buffers command, %d\n" , |
1898 | __func__, status); |
1899 | return status; |
1900 | } |
1901 | |
1902 | /* Read Initial MSR */ |
1903 | status = read_port_cmd(port, UMPC_READ_MSR, value: 0, data: &edge_port->shadow_msr, size: 1); |
1904 | if (status) { |
1905 | dev_err(&port->dev, "%s - cannot send read MSR command, %d\n" , |
1906 | __func__, status); |
1907 | return status; |
1908 | } |
1909 | |
1910 | dev_dbg(&port->dev, "ShadowMSR 0x%X\n" , edge_port->shadow_msr); |
1911 | |
1912 | /* Set Initial MCR */ |
1913 | edge_port->shadow_mcr = MCR_RTS | MCR_DTR; |
1914 | dev_dbg(&port->dev, "ShadowMCR 0x%X\n" , edge_port->shadow_mcr); |
1915 | |
1916 | edge_serial = edge_port->edge_serial; |
1917 | if (mutex_lock_interruptible(&edge_serial->es_lock)) |
1918 | return -ERESTARTSYS; |
1919 | if (edge_serial->num_ports_open == 0) { |
1920 | /* we are the first port to open, post the interrupt urb */ |
1921 | urb = edge_serial->serial->port[0]->interrupt_in_urb; |
1922 | urb->context = edge_serial; |
1923 | status = usb_submit_urb(urb, GFP_KERNEL); |
1924 | if (status) { |
1925 | dev_err(&port->dev, |
1926 | "%s - usb_submit_urb failed with value %d\n" , |
1927 | __func__, status); |
1928 | goto release_es_lock; |
1929 | } |
1930 | } |
1931 | |
1932 | /* |
1933 | * reset the data toggle on the bulk endpoints to work around bug in |
1934 | * host controllers where things get out of sync some times |
1935 | */ |
1936 | usb_clear_halt(dev, pipe: port->write_urb->pipe); |
1937 | usb_clear_halt(dev, pipe: port->read_urb->pipe); |
1938 | |
1939 | /* start up our bulk read urb */ |
1940 | urb = port->read_urb; |
1941 | edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; |
1942 | urb->context = edge_port; |
1943 | status = usb_submit_urb(urb, GFP_KERNEL); |
1944 | if (status) { |
1945 | dev_err(&port->dev, |
1946 | "%s - read bulk usb_submit_urb failed with value %d\n" , |
1947 | __func__, status); |
1948 | goto unlink_int_urb; |
1949 | } |
1950 | |
1951 | ++edge_serial->num_ports_open; |
1952 | |
1953 | goto release_es_lock; |
1954 | |
1955 | unlink_int_urb: |
1956 | if (edge_port->edge_serial->num_ports_open == 0) |
1957 | usb_kill_urb(urb: port->serial->port[0]->interrupt_in_urb); |
1958 | release_es_lock: |
1959 | mutex_unlock(lock: &edge_serial->es_lock); |
1960 | return status; |
1961 | } |
1962 | |
1963 | static void edge_close(struct usb_serial_port *port) |
1964 | { |
1965 | struct edgeport_serial *edge_serial; |
1966 | struct edgeport_port *edge_port; |
1967 | unsigned long flags; |
1968 | |
1969 | edge_serial = usb_get_serial_data(serial: port->serial); |
1970 | edge_port = usb_get_serial_port_data(port); |
1971 | if (edge_serial == NULL || edge_port == NULL) |
1972 | return; |
1973 | |
1974 | /* |
1975 | * The bulkreadcompletion routine will check |
1976 | * this flag and dump add read data |
1977 | */ |
1978 | edge_port->close_pending = 1; |
1979 | |
1980 | usb_kill_urb(urb: port->read_urb); |
1981 | usb_kill_urb(urb: port->write_urb); |
1982 | edge_port->ep_write_urb_in_use = 0; |
1983 | spin_lock_irqsave(&edge_port->ep_lock, flags); |
1984 | kfifo_reset_out(&port->write_fifo); |
1985 | spin_unlock_irqrestore(lock: &edge_port->ep_lock, flags); |
1986 | |
1987 | dev_dbg(&port->dev, "%s - send umpc_close_port\n" , __func__); |
1988 | send_port_cmd(port, UMPC_CLOSE_PORT, value: 0, NULL, size: 0); |
1989 | |
1990 | mutex_lock(&edge_serial->es_lock); |
1991 | --edge_port->edge_serial->num_ports_open; |
1992 | if (edge_port->edge_serial->num_ports_open <= 0) { |
1993 | /* last port is now closed, let's shut down our interrupt urb */ |
1994 | usb_kill_urb(urb: port->serial->port[0]->interrupt_in_urb); |
1995 | edge_port->edge_serial->num_ports_open = 0; |
1996 | } |
1997 | mutex_unlock(lock: &edge_serial->es_lock); |
1998 | edge_port->close_pending = 0; |
1999 | } |
2000 | |
2001 | static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, |
2002 | const unsigned char *data, int count) |
2003 | { |
2004 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
2005 | |
2006 | if (count == 0) { |
2007 | dev_dbg(&port->dev, "%s - write request of 0 bytes\n" , __func__); |
2008 | return 0; |
2009 | } |
2010 | |
2011 | if (edge_port == NULL) |
2012 | return -ENODEV; |
2013 | if (edge_port->close_pending == 1) |
2014 | return -ENODEV; |
2015 | |
2016 | count = kfifo_in_locked(&port->write_fifo, data, count, |
2017 | &edge_port->ep_lock); |
2018 | edge_send(port, tty); |
2019 | |
2020 | return count; |
2021 | } |
2022 | |
2023 | static void edge_send(struct usb_serial_port *port, struct tty_struct *tty) |
2024 | { |
2025 | int count, result; |
2026 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
2027 | unsigned long flags; |
2028 | |
2029 | spin_lock_irqsave(&edge_port->ep_lock, flags); |
2030 | |
2031 | if (edge_port->ep_write_urb_in_use) { |
2032 | spin_unlock_irqrestore(lock: &edge_port->ep_lock, flags); |
2033 | return; |
2034 | } |
2035 | |
2036 | count = kfifo_out(&port->write_fifo, |
2037 | port->write_urb->transfer_buffer, |
2038 | port->bulk_out_size); |
2039 | |
2040 | if (count == 0) { |
2041 | spin_unlock_irqrestore(lock: &edge_port->ep_lock, flags); |
2042 | return; |
2043 | } |
2044 | |
2045 | edge_port->ep_write_urb_in_use = 1; |
2046 | |
2047 | spin_unlock_irqrestore(lock: &edge_port->ep_lock, flags); |
2048 | |
2049 | usb_serial_debug_data(dev: &port->dev, function: __func__, size: count, data: port->write_urb->transfer_buffer); |
2050 | |
2051 | /* set up our urb */ |
2052 | port->write_urb->transfer_buffer_length = count; |
2053 | |
2054 | /* send the data out the bulk port */ |
2055 | result = usb_submit_urb(urb: port->write_urb, GFP_ATOMIC); |
2056 | if (result) { |
2057 | dev_err_console(port, |
2058 | "%s - failed submitting write urb, error %d\n" , |
2059 | __func__, result); |
2060 | edge_port->ep_write_urb_in_use = 0; |
2061 | /* TODO: reschedule edge_send */ |
2062 | } else |
2063 | edge_port->port->icount.tx += count; |
2064 | |
2065 | /* |
2066 | * wakeup any process waiting for writes to complete |
2067 | * there is now more room in the buffer for new writes |
2068 | */ |
2069 | if (tty) |
2070 | tty_wakeup(tty); |
2071 | } |
2072 | |
2073 | static unsigned int edge_write_room(struct tty_struct *tty) |
2074 | { |
2075 | struct usb_serial_port *port = tty->driver_data; |
2076 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
2077 | unsigned int room; |
2078 | unsigned long flags; |
2079 | |
2080 | if (edge_port == NULL) |
2081 | return 0; |
2082 | if (edge_port->close_pending == 1) |
2083 | return 0; |
2084 | |
2085 | spin_lock_irqsave(&edge_port->ep_lock, flags); |
2086 | room = kfifo_avail(&port->write_fifo); |
2087 | spin_unlock_irqrestore(lock: &edge_port->ep_lock, flags); |
2088 | |
2089 | dev_dbg(&port->dev, "%s - returns %u\n" , __func__, room); |
2090 | return room; |
2091 | } |
2092 | |
2093 | static unsigned int edge_chars_in_buffer(struct tty_struct *tty) |
2094 | { |
2095 | struct usb_serial_port *port = tty->driver_data; |
2096 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
2097 | unsigned int chars; |
2098 | unsigned long flags; |
2099 | if (edge_port == NULL) |
2100 | return 0; |
2101 | |
2102 | spin_lock_irqsave(&edge_port->ep_lock, flags); |
2103 | chars = kfifo_len(&port->write_fifo); |
2104 | spin_unlock_irqrestore(lock: &edge_port->ep_lock, flags); |
2105 | |
2106 | dev_dbg(&port->dev, "%s - returns %u\n" , __func__, chars); |
2107 | return chars; |
2108 | } |
2109 | |
2110 | static bool edge_tx_empty(struct usb_serial_port *port) |
2111 | { |
2112 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
2113 | int ret; |
2114 | |
2115 | ret = tx_active(port: edge_port); |
2116 | if (ret > 0) |
2117 | return false; |
2118 | |
2119 | return true; |
2120 | } |
2121 | |
2122 | static void edge_throttle(struct tty_struct *tty) |
2123 | { |
2124 | struct usb_serial_port *port = tty->driver_data; |
2125 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
2126 | int status; |
2127 | |
2128 | if (edge_port == NULL) |
2129 | return; |
2130 | |
2131 | /* if we are implementing XON/XOFF, send the stop character */ |
2132 | if (I_IXOFF(tty)) { |
2133 | unsigned char stop_char = STOP_CHAR(tty); |
2134 | status = edge_write(tty, port, data: &stop_char, count: 1); |
2135 | if (status <= 0) { |
2136 | dev_err(&port->dev, "%s - failed to write stop character, %d\n" , __func__, status); |
2137 | } |
2138 | } |
2139 | |
2140 | /* |
2141 | * if we are implementing RTS/CTS, stop reads |
2142 | * and the Edgeport will clear the RTS line |
2143 | */ |
2144 | if (C_CRTSCTS(tty)) |
2145 | stop_read(edge_port); |
2146 | |
2147 | } |
2148 | |
2149 | static void edge_unthrottle(struct tty_struct *tty) |
2150 | { |
2151 | struct usb_serial_port *port = tty->driver_data; |
2152 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
2153 | int status; |
2154 | |
2155 | if (edge_port == NULL) |
2156 | return; |
2157 | |
2158 | /* if we are implementing XON/XOFF, send the start character */ |
2159 | if (I_IXOFF(tty)) { |
2160 | unsigned char start_char = START_CHAR(tty); |
2161 | status = edge_write(tty, port, data: &start_char, count: 1); |
2162 | if (status <= 0) { |
2163 | dev_err(&port->dev, "%s - failed to write start character, %d\n" , __func__, status); |
2164 | } |
2165 | } |
2166 | /* |
2167 | * if we are implementing RTS/CTS, restart reads |
2168 | * are the Edgeport will assert the RTS line |
2169 | */ |
2170 | if (C_CRTSCTS(tty)) { |
2171 | status = restart_read(edge_port); |
2172 | if (status) |
2173 | dev_err(&port->dev, |
2174 | "%s - read bulk usb_submit_urb failed: %d\n" , |
2175 | __func__, status); |
2176 | } |
2177 | |
2178 | } |
2179 | |
2180 | static void stop_read(struct edgeport_port *edge_port) |
2181 | { |
2182 | unsigned long flags; |
2183 | |
2184 | spin_lock_irqsave(&edge_port->ep_lock, flags); |
2185 | |
2186 | if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) |
2187 | edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING; |
2188 | edge_port->shadow_mcr &= ~MCR_RTS; |
2189 | |
2190 | spin_unlock_irqrestore(lock: &edge_port->ep_lock, flags); |
2191 | } |
2192 | |
2193 | static int restart_read(struct edgeport_port *edge_port) |
2194 | { |
2195 | struct urb *urb; |
2196 | int status = 0; |
2197 | unsigned long flags; |
2198 | |
2199 | spin_lock_irqsave(&edge_port->ep_lock, flags); |
2200 | |
2201 | if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) { |
2202 | urb = edge_port->port->read_urb; |
2203 | status = usb_submit_urb(urb, GFP_ATOMIC); |
2204 | } |
2205 | edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; |
2206 | edge_port->shadow_mcr |= MCR_RTS; |
2207 | |
2208 | spin_unlock_irqrestore(lock: &edge_port->ep_lock, flags); |
2209 | |
2210 | return status; |
2211 | } |
2212 | |
2213 | static void change_port_settings(struct tty_struct *tty, |
2214 | struct edgeport_port *edge_port, const struct ktermios *old_termios) |
2215 | { |
2216 | struct device *dev = &edge_port->port->dev; |
2217 | struct ump_uart_config *config; |
2218 | int baud; |
2219 | unsigned cflag; |
2220 | int status; |
2221 | |
2222 | config = kmalloc (size: sizeof (*config), GFP_KERNEL); |
2223 | if (!config) { |
2224 | tty->termios = *old_termios; |
2225 | return; |
2226 | } |
2227 | |
2228 | cflag = tty->termios.c_cflag; |
2229 | |
2230 | config->wFlags = 0; |
2231 | |
2232 | /* These flags must be set */ |
2233 | config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT; |
2234 | config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR; |
2235 | config->bUartMode = (u8)(edge_port->bUartMode); |
2236 | |
2237 | switch (cflag & CSIZE) { |
2238 | case CS5: |
2239 | config->bDataBits = UMP_UART_CHAR5BITS; |
2240 | dev_dbg(dev, "%s - data bits = 5\n" , __func__); |
2241 | break; |
2242 | case CS6: |
2243 | config->bDataBits = UMP_UART_CHAR6BITS; |
2244 | dev_dbg(dev, "%s - data bits = 6\n" , __func__); |
2245 | break; |
2246 | case CS7: |
2247 | config->bDataBits = UMP_UART_CHAR7BITS; |
2248 | dev_dbg(dev, "%s - data bits = 7\n" , __func__); |
2249 | break; |
2250 | default: |
2251 | case CS8: |
2252 | config->bDataBits = UMP_UART_CHAR8BITS; |
2253 | dev_dbg(dev, "%s - data bits = 8\n" , __func__); |
2254 | break; |
2255 | } |
2256 | |
2257 | if (cflag & PARENB) { |
2258 | if (cflag & PARODD) { |
2259 | config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; |
2260 | config->bParity = UMP_UART_ODDPARITY; |
2261 | dev_dbg(dev, "%s - parity = odd\n" , __func__); |
2262 | } else { |
2263 | config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; |
2264 | config->bParity = UMP_UART_EVENPARITY; |
2265 | dev_dbg(dev, "%s - parity = even\n" , __func__); |
2266 | } |
2267 | } else { |
2268 | config->bParity = UMP_UART_NOPARITY; |
2269 | dev_dbg(dev, "%s - parity = none\n" , __func__); |
2270 | } |
2271 | |
2272 | if (cflag & CSTOPB) { |
2273 | config->bStopBits = UMP_UART_STOPBIT2; |
2274 | dev_dbg(dev, "%s - stop bits = 2\n" , __func__); |
2275 | } else { |
2276 | config->bStopBits = UMP_UART_STOPBIT1; |
2277 | dev_dbg(dev, "%s - stop bits = 1\n" , __func__); |
2278 | } |
2279 | |
2280 | /* figure out the flow control settings */ |
2281 | if (cflag & CRTSCTS) { |
2282 | config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW; |
2283 | config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW; |
2284 | dev_dbg(dev, "%s - RTS/CTS is enabled\n" , __func__); |
2285 | } else { |
2286 | dev_dbg(dev, "%s - RTS/CTS is disabled\n" , __func__); |
2287 | restart_read(edge_port); |
2288 | } |
2289 | |
2290 | /* |
2291 | * if we are implementing XON/XOFF, set the start and stop |
2292 | * character in the device |
2293 | */ |
2294 | config->cXon = START_CHAR(tty); |
2295 | config->cXoff = STOP_CHAR(tty); |
2296 | |
2297 | /* if we are implementing INBOUND XON/XOFF */ |
2298 | if (I_IXOFF(tty)) { |
2299 | config->wFlags |= UMP_MASK_UART_FLAGS_IN_X; |
2300 | dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n" , |
2301 | __func__, config->cXon, config->cXoff); |
2302 | } else |
2303 | dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n" , __func__); |
2304 | |
2305 | /* if we are implementing OUTBOUND XON/XOFF */ |
2306 | if (I_IXON(tty)) { |
2307 | config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X; |
2308 | dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n" , |
2309 | __func__, config->cXon, config->cXoff); |
2310 | } else |
2311 | dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n" , __func__); |
2312 | |
2313 | tty->termios.c_cflag &= ~CMSPAR; |
2314 | |
2315 | /* Round the baud rate */ |
2316 | baud = tty_get_baud_rate(tty); |
2317 | if (!baud) { |
2318 | /* pick a default, any default... */ |
2319 | baud = 9600; |
2320 | } else { |
2321 | /* Avoid a zero divisor. */ |
2322 | baud = min(baud, 461550); |
2323 | tty_encode_baud_rate(tty, ibaud: baud, obaud: baud); |
2324 | } |
2325 | |
2326 | edge_port->baud_rate = baud; |
2327 | config->wBaudRate = (u16)((461550L + baud/2) / baud); |
2328 | |
2329 | /* FIXME: Recompute actual baud from divisor here */ |
2330 | |
2331 | dev_dbg(dev, "%s - baud rate = %d, wBaudRate = %d\n" , __func__, baud, config->wBaudRate); |
2332 | |
2333 | dev_dbg(dev, "wBaudRate: %d\n" , (int)(461550L / config->wBaudRate)); |
2334 | dev_dbg(dev, "wFlags: 0x%x\n" , config->wFlags); |
2335 | dev_dbg(dev, "bDataBits: %d\n" , config->bDataBits); |
2336 | dev_dbg(dev, "bParity: %d\n" , config->bParity); |
2337 | dev_dbg(dev, "bStopBits: %d\n" , config->bStopBits); |
2338 | dev_dbg(dev, "cXon: %d\n" , config->cXon); |
2339 | dev_dbg(dev, "cXoff: %d\n" , config->cXoff); |
2340 | dev_dbg(dev, "bUartMode: %d\n" , config->bUartMode); |
2341 | |
2342 | /* move the word values into big endian mode */ |
2343 | cpu_to_be16s(&config->wFlags); |
2344 | cpu_to_be16s(&config->wBaudRate); |
2345 | |
2346 | status = send_port_cmd(port: edge_port->port, UMPC_SET_CONFIG, value: 0, data: config, |
2347 | size: sizeof(*config)); |
2348 | if (status) |
2349 | dev_dbg(dev, "%s - error %d when trying to write config to device\n" , |
2350 | __func__, status); |
2351 | kfree(objp: config); |
2352 | } |
2353 | |
2354 | static void edge_set_termios(struct tty_struct *tty, |
2355 | struct usb_serial_port *port, |
2356 | const struct ktermios *old_termios) |
2357 | { |
2358 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
2359 | |
2360 | if (edge_port == NULL) |
2361 | return; |
2362 | /* change the port settings to the new ones specified */ |
2363 | change_port_settings(tty, edge_port, old_termios); |
2364 | } |
2365 | |
2366 | static int edge_tiocmset(struct tty_struct *tty, |
2367 | unsigned int set, unsigned int clear) |
2368 | { |
2369 | struct usb_serial_port *port = tty->driver_data; |
2370 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
2371 | unsigned int mcr; |
2372 | unsigned long flags; |
2373 | |
2374 | spin_lock_irqsave(&edge_port->ep_lock, flags); |
2375 | mcr = edge_port->shadow_mcr; |
2376 | if (set & TIOCM_RTS) |
2377 | mcr |= MCR_RTS; |
2378 | if (set & TIOCM_DTR) |
2379 | mcr |= MCR_DTR; |
2380 | if (set & TIOCM_LOOP) |
2381 | mcr |= MCR_LOOPBACK; |
2382 | |
2383 | if (clear & TIOCM_RTS) |
2384 | mcr &= ~MCR_RTS; |
2385 | if (clear & TIOCM_DTR) |
2386 | mcr &= ~MCR_DTR; |
2387 | if (clear & TIOCM_LOOP) |
2388 | mcr &= ~MCR_LOOPBACK; |
2389 | |
2390 | edge_port->shadow_mcr = mcr; |
2391 | spin_unlock_irqrestore(lock: &edge_port->ep_lock, flags); |
2392 | |
2393 | restore_mcr(port: edge_port, mcr); |
2394 | return 0; |
2395 | } |
2396 | |
2397 | static int edge_tiocmget(struct tty_struct *tty) |
2398 | { |
2399 | struct usb_serial_port *port = tty->driver_data; |
2400 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
2401 | unsigned int result = 0; |
2402 | unsigned int msr; |
2403 | unsigned int mcr; |
2404 | unsigned long flags; |
2405 | |
2406 | spin_lock_irqsave(&edge_port->ep_lock, flags); |
2407 | |
2408 | msr = edge_port->shadow_msr; |
2409 | mcr = edge_port->shadow_mcr; |
2410 | result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ |
2411 | | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ |
2412 | | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ |
2413 | | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */ |
2414 | | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ |
2415 | | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ |
2416 | |
2417 | |
2418 | dev_dbg(&port->dev, "%s -- %x\n" , __func__, result); |
2419 | spin_unlock_irqrestore(lock: &edge_port->ep_lock, flags); |
2420 | |
2421 | return result; |
2422 | } |
2423 | |
2424 | static int edge_break(struct tty_struct *tty, int break_state) |
2425 | { |
2426 | struct usb_serial_port *port = tty->driver_data; |
2427 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
2428 | int status; |
2429 | int bv = 0; /* Off */ |
2430 | |
2431 | if (break_state == -1) |
2432 | bv = 1; /* On */ |
2433 | |
2434 | status = ti_do_config(port: edge_port, UMPC_SET_CLR_BREAK, on: bv); |
2435 | if (status) { |
2436 | dev_dbg(&port->dev, "%s - error %d sending break set/clear command.\n" , |
2437 | __func__, status); |
2438 | return status; |
2439 | } |
2440 | |
2441 | return 0; |
2442 | } |
2443 | |
2444 | static void edge_heartbeat_schedule(struct edgeport_serial *edge_serial) |
2445 | { |
2446 | if (!edge_serial->use_heartbeat) |
2447 | return; |
2448 | |
2449 | schedule_delayed_work(dwork: &edge_serial->heartbeat_work, |
2450 | FW_HEARTBEAT_SECS * HZ); |
2451 | } |
2452 | |
2453 | static void edge_heartbeat_work(struct work_struct *work) |
2454 | { |
2455 | struct edgeport_serial *serial; |
2456 | struct ti_i2c_desc *rom_desc; |
2457 | |
2458 | serial = container_of(work, struct edgeport_serial, |
2459 | heartbeat_work.work); |
2460 | |
2461 | rom_desc = kmalloc(size: sizeof(*rom_desc), GFP_KERNEL); |
2462 | |
2463 | /* Descriptor address request is enough to reset the firmware timer */ |
2464 | if (!rom_desc || !get_descriptor_addr(serial, I2C_DESC_TYPE_ION, |
2465 | rom_desc)) { |
2466 | dev_err(&serial->serial->interface->dev, |
2467 | "%s - Incomplete heartbeat\n" , __func__); |
2468 | } |
2469 | kfree(objp: rom_desc); |
2470 | |
2471 | edge_heartbeat_schedule(edge_serial: serial); |
2472 | } |
2473 | |
2474 | static int edge_calc_num_ports(struct usb_serial *serial, |
2475 | struct usb_serial_endpoints *epds) |
2476 | { |
2477 | struct device *dev = &serial->interface->dev; |
2478 | unsigned char num_ports = serial->type->num_ports; |
2479 | |
2480 | /* Make sure we have the required endpoints when in download mode. */ |
2481 | if (serial->interface->cur_altsetting->desc.bNumEndpoints > 1) { |
2482 | if (epds->num_bulk_in < num_ports || |
2483 | epds->num_bulk_out < num_ports || |
2484 | epds->num_interrupt_in < 1) { |
2485 | dev_err(dev, "required endpoints missing\n" ); |
2486 | return -ENODEV; |
2487 | } |
2488 | } |
2489 | |
2490 | return num_ports; |
2491 | } |
2492 | |
2493 | static int edge_startup(struct usb_serial *serial) |
2494 | { |
2495 | struct edgeport_serial *edge_serial; |
2496 | int status; |
2497 | u16 product_id; |
2498 | |
2499 | /* create our private serial structure */ |
2500 | edge_serial = kzalloc(size: sizeof(struct edgeport_serial), GFP_KERNEL); |
2501 | if (!edge_serial) |
2502 | return -ENOMEM; |
2503 | |
2504 | mutex_init(&edge_serial->es_lock); |
2505 | edge_serial->serial = serial; |
2506 | INIT_DELAYED_WORK(&edge_serial->heartbeat_work, edge_heartbeat_work); |
2507 | usb_set_serial_data(serial, data: edge_serial); |
2508 | |
2509 | status = download_fw(serial: edge_serial); |
2510 | if (status < 0) { |
2511 | kfree(objp: edge_serial); |
2512 | return status; |
2513 | } |
2514 | |
2515 | if (status > 0) |
2516 | return 1; /* bind but do not register any ports */ |
2517 | |
2518 | product_id = le16_to_cpu( |
2519 | edge_serial->serial->dev->descriptor.idProduct); |
2520 | |
2521 | /* Currently only the EP/416 models require heartbeat support */ |
2522 | if (edge_serial->fw_version > FW_HEARTBEAT_VERSION_CUTOFF) { |
2523 | if (product_id == ION_DEVICE_ID_TI_EDGEPORT_416 || |
2524 | product_id == ION_DEVICE_ID_TI_EDGEPORT_416B) { |
2525 | edge_serial->use_heartbeat = true; |
2526 | } |
2527 | } |
2528 | |
2529 | edge_heartbeat_schedule(edge_serial); |
2530 | |
2531 | return 0; |
2532 | } |
2533 | |
2534 | static void edge_disconnect(struct usb_serial *serial) |
2535 | { |
2536 | struct edgeport_serial *edge_serial = usb_get_serial_data(serial); |
2537 | |
2538 | cancel_delayed_work_sync(dwork: &edge_serial->heartbeat_work); |
2539 | } |
2540 | |
2541 | static void edge_release(struct usb_serial *serial) |
2542 | { |
2543 | struct edgeport_serial *edge_serial = usb_get_serial_data(serial); |
2544 | |
2545 | cancel_delayed_work_sync(dwork: &edge_serial->heartbeat_work); |
2546 | kfree(objp: edge_serial); |
2547 | } |
2548 | |
2549 | static int edge_port_probe(struct usb_serial_port *port) |
2550 | { |
2551 | struct edgeport_port *edge_port; |
2552 | int ret; |
2553 | |
2554 | edge_port = kzalloc(size: sizeof(*edge_port), GFP_KERNEL); |
2555 | if (!edge_port) |
2556 | return -ENOMEM; |
2557 | |
2558 | spin_lock_init(&edge_port->ep_lock); |
2559 | edge_port->port = port; |
2560 | edge_port->edge_serial = usb_get_serial_data(serial: port->serial); |
2561 | edge_port->bUartMode = default_uart_mode; |
2562 | |
2563 | switch (port->port_number) { |
2564 | case 0: |
2565 | edge_port->uart_base = UMPMEM_BASE_UART1; |
2566 | edge_port->dma_address = UMPD_OEDB1_ADDRESS; |
2567 | break; |
2568 | case 1: |
2569 | edge_port->uart_base = UMPMEM_BASE_UART2; |
2570 | edge_port->dma_address = UMPD_OEDB2_ADDRESS; |
2571 | break; |
2572 | default: |
2573 | dev_err(&port->dev, "unknown port number\n" ); |
2574 | ret = -ENODEV; |
2575 | goto err; |
2576 | } |
2577 | |
2578 | dev_dbg(&port->dev, |
2579 | "%s - port_number = %d, uart_base = %04x, dma_address = %04x\n" , |
2580 | __func__, port->port_number, edge_port->uart_base, |
2581 | edge_port->dma_address); |
2582 | |
2583 | usb_set_serial_port_data(port, data: edge_port); |
2584 | |
2585 | ret = edge_create_sysfs_attrs(port); |
2586 | if (ret) |
2587 | goto err; |
2588 | |
2589 | /* |
2590 | * The LSR does not tell when the transmitter shift register has |
2591 | * emptied so add a one-character drain delay. |
2592 | */ |
2593 | port->port.drain_delay = 1; |
2594 | |
2595 | return 0; |
2596 | err: |
2597 | kfree(objp: edge_port); |
2598 | |
2599 | return ret; |
2600 | } |
2601 | |
2602 | static void edge_port_remove(struct usb_serial_port *port) |
2603 | { |
2604 | struct edgeport_port *edge_port; |
2605 | |
2606 | edge_port = usb_get_serial_port_data(port); |
2607 | edge_remove_sysfs_attrs(port); |
2608 | kfree(objp: edge_port); |
2609 | } |
2610 | |
2611 | /* Sysfs Attributes */ |
2612 | |
2613 | static ssize_t uart_mode_show(struct device *dev, |
2614 | struct device_attribute *attr, char *buf) |
2615 | { |
2616 | struct usb_serial_port *port = to_usb_serial_port(dev); |
2617 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
2618 | |
2619 | return sprintf(buf, fmt: "%d\n" , edge_port->bUartMode); |
2620 | } |
2621 | |
2622 | static ssize_t uart_mode_store(struct device *dev, |
2623 | struct device_attribute *attr, const char *valbuf, size_t count) |
2624 | { |
2625 | struct usb_serial_port *port = to_usb_serial_port(dev); |
2626 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
2627 | unsigned int v = simple_strtoul(valbuf, NULL, 0); |
2628 | |
2629 | dev_dbg(dev, "%s: setting uart_mode = %d\n" , __func__, v); |
2630 | |
2631 | if (v < 256) |
2632 | edge_port->bUartMode = v; |
2633 | else |
2634 | dev_err(dev, "%s - uart_mode %d is invalid\n" , __func__, v); |
2635 | |
2636 | return count; |
2637 | } |
2638 | static DEVICE_ATTR_RW(uart_mode); |
2639 | |
2640 | static int edge_create_sysfs_attrs(struct usb_serial_port *port) |
2641 | { |
2642 | return device_create_file(device: &port->dev, entry: &dev_attr_uart_mode); |
2643 | } |
2644 | |
2645 | static int edge_remove_sysfs_attrs(struct usb_serial_port *port) |
2646 | { |
2647 | device_remove_file(dev: &port->dev, attr: &dev_attr_uart_mode); |
2648 | return 0; |
2649 | } |
2650 | |
2651 | #ifdef CONFIG_PM |
2652 | static int edge_suspend(struct usb_serial *serial, pm_message_t message) |
2653 | { |
2654 | struct edgeport_serial *edge_serial = usb_get_serial_data(serial); |
2655 | |
2656 | cancel_delayed_work_sync(dwork: &edge_serial->heartbeat_work); |
2657 | |
2658 | return 0; |
2659 | } |
2660 | |
2661 | static int edge_resume(struct usb_serial *serial) |
2662 | { |
2663 | struct edgeport_serial *edge_serial = usb_get_serial_data(serial); |
2664 | |
2665 | edge_heartbeat_schedule(edge_serial); |
2666 | |
2667 | return 0; |
2668 | } |
2669 | #endif |
2670 | |
2671 | static struct usb_serial_driver edgeport_1port_device = { |
2672 | .driver = { |
2673 | .owner = THIS_MODULE, |
2674 | .name = "edgeport_ti_1" , |
2675 | }, |
2676 | .description = "Edgeport TI 1 port adapter" , |
2677 | .id_table = edgeport_1port_id_table, |
2678 | .num_ports = 1, |
2679 | .num_bulk_out = 1, |
2680 | .open = edge_open, |
2681 | .close = edge_close, |
2682 | .throttle = edge_throttle, |
2683 | .unthrottle = edge_unthrottle, |
2684 | .attach = edge_startup, |
2685 | .calc_num_ports = edge_calc_num_ports, |
2686 | .disconnect = edge_disconnect, |
2687 | .release = edge_release, |
2688 | .port_probe = edge_port_probe, |
2689 | .port_remove = edge_port_remove, |
2690 | .set_termios = edge_set_termios, |
2691 | .tiocmget = edge_tiocmget, |
2692 | .tiocmset = edge_tiocmset, |
2693 | .tiocmiwait = usb_serial_generic_tiocmiwait, |
2694 | .get_icount = usb_serial_generic_get_icount, |
2695 | .write = edge_write, |
2696 | .write_room = edge_write_room, |
2697 | .chars_in_buffer = edge_chars_in_buffer, |
2698 | .tx_empty = edge_tx_empty, |
2699 | .break_ctl = edge_break, |
2700 | .read_int_callback = edge_interrupt_callback, |
2701 | .read_bulk_callback = edge_bulk_in_callback, |
2702 | .write_bulk_callback = edge_bulk_out_callback, |
2703 | #ifdef CONFIG_PM |
2704 | .suspend = edge_suspend, |
2705 | .resume = edge_resume, |
2706 | #endif |
2707 | }; |
2708 | |
2709 | static struct usb_serial_driver edgeport_2port_device = { |
2710 | .driver = { |
2711 | .owner = THIS_MODULE, |
2712 | .name = "edgeport_ti_2" , |
2713 | }, |
2714 | .description = "Edgeport TI 2 port adapter" , |
2715 | .id_table = edgeport_2port_id_table, |
2716 | .num_ports = 2, |
2717 | .num_bulk_out = 1, |
2718 | .open = edge_open, |
2719 | .close = edge_close, |
2720 | .throttle = edge_throttle, |
2721 | .unthrottle = edge_unthrottle, |
2722 | .attach = edge_startup, |
2723 | .calc_num_ports = edge_calc_num_ports, |
2724 | .disconnect = edge_disconnect, |
2725 | .release = edge_release, |
2726 | .port_probe = edge_port_probe, |
2727 | .port_remove = edge_port_remove, |
2728 | .set_termios = edge_set_termios, |
2729 | .tiocmget = edge_tiocmget, |
2730 | .tiocmset = edge_tiocmset, |
2731 | .tiocmiwait = usb_serial_generic_tiocmiwait, |
2732 | .get_icount = usb_serial_generic_get_icount, |
2733 | .write = edge_write, |
2734 | .write_room = edge_write_room, |
2735 | .chars_in_buffer = edge_chars_in_buffer, |
2736 | .tx_empty = edge_tx_empty, |
2737 | .break_ctl = edge_break, |
2738 | .read_int_callback = edge_interrupt_callback, |
2739 | .read_bulk_callback = edge_bulk_in_callback, |
2740 | .write_bulk_callback = edge_bulk_out_callback, |
2741 | #ifdef CONFIG_PM |
2742 | .suspend = edge_suspend, |
2743 | .resume = edge_resume, |
2744 | #endif |
2745 | }; |
2746 | |
2747 | static struct usb_serial_driver * const serial_drivers[] = { |
2748 | &edgeport_1port_device, &edgeport_2port_device, NULL |
2749 | }; |
2750 | |
2751 | module_usb_serial_driver(serial_drivers, id_table_combined); |
2752 | |
2753 | MODULE_AUTHOR(DRIVER_AUTHOR); |
2754 | MODULE_DESCRIPTION(DRIVER_DESC); |
2755 | MODULE_LICENSE("GPL" ); |
2756 | MODULE_FIRMWARE("edgeport/down3.bin" ); |
2757 | |
2758 | module_param(ignore_cpu_rev, bool, 0644); |
2759 | MODULE_PARM_DESC(ignore_cpu_rev, |
2760 | "Ignore the cpu revision when connecting to a device" ); |
2761 | |
2762 | module_param(default_uart_mode, int, 0644); |
2763 | MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ..." ); |
2764 | |