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1da177e4 LT |
1 | /* |
2 | * Edgeport USB Serial Converter driver | |
3 | * | |
4 | * Copyright (C) 2000-2002 Inside Out Networks, All rights reserved. | |
5 | * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * Supports the following devices: | |
13 | * EP/1 EP/2 EP/4 EP/21 EP/22 EP/221 EP/42 EP/421 WATCHPORT | |
14 | * | |
15 | * For questions or problems with this driver, contact Inside Out | |
16 | * Networks technical support, or Peter Berger <pberger@brimson.com>, | |
17 | * or Al Borchers <alborchers@steinerpoint.com>. | |
18 | * | |
19 | * Version history: | |
20 | * | |
21 | * July 11, 2002 Removed 4 port device structure since all TI UMP | |
22 | * chips have only 2 ports | |
23 | * David Iacovelli (davidi@ionetworks.com) | |
24 | * | |
25 | */ | |
26 | ||
27 | #include <linux/config.h> | |
28 | #include <linux/kernel.h> | |
29 | #include <linux/jiffies.h> | |
30 | #include <linux/errno.h> | |
31 | #include <linux/init.h> | |
32 | #include <linux/slab.h> | |
33 | #include <linux/tty.h> | |
34 | #include <linux/tty_driver.h> | |
35 | #include <linux/tty_flip.h> | |
36 | #include <linux/module.h> | |
37 | #include <linux/spinlock.h> | |
38 | #include <linux/serial.h> | |
39 | #include <linux/ioctl.h> | |
40 | #include <asm/uaccess.h> | |
41 | #include <asm/semaphore.h> | |
42 | #include <linux/usb.h> | |
43 | ||
44 | #include "usb-serial.h" | |
45 | #include "io_16654.h" | |
46 | #include "io_usbvend.h" | |
47 | #include "io_ti.h" | |
48 | ||
49 | /* | |
50 | * Version Information | |
51 | */ | |
52 | #define DRIVER_VERSION "v0.7" | |
53 | #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli" | |
54 | #define DRIVER_DESC "Edgeport USB Serial Driver" | |
55 | ||
56 | ||
57 | /* firmware image code */ | |
58 | #define IMAGE_VERSION_NAME PagableOperationalCodeImageVersion | |
59 | #define IMAGE_ARRAY_NAME PagableOperationalCodeImage | |
60 | #define IMAGE_SIZE PagableOperationalCodeSize | |
61 | #include "io_fw_down3.h" /* Define array OperationalCodeImage[] */ | |
62 | ||
63 | #define EPROM_PAGE_SIZE 64 | |
64 | ||
65 | ||
66 | struct edgeport_uart_buf_desc { | |
67 | __u32 count; // Number of bytes currently in buffer | |
68 | }; | |
69 | ||
70 | /* different hardware types */ | |
71 | #define HARDWARE_TYPE_930 0 | |
72 | #define HARDWARE_TYPE_TIUMP 1 | |
73 | ||
74 | // IOCTL_PRIVATE_TI_GET_MODE Definitions | |
75 | #define TI_MODE_CONFIGURING 0 // Device has not entered start device | |
76 | #define TI_MODE_BOOT 1 // Staying in boot mode | |
77 | #define TI_MODE_DOWNLOAD 2 // Made it to download mode | |
78 | #define TI_MODE_TRANSITIONING 3 // Currently in boot mode but transitioning to download mode | |
79 | ||
80 | /* read urb state */ | |
81 | #define EDGE_READ_URB_RUNNING 0 | |
82 | #define EDGE_READ_URB_STOPPING 1 | |
83 | #define EDGE_READ_URB_STOPPED 2 | |
84 | ||
85 | #define EDGE_LOW_LATENCY 1 | |
86 | #define EDGE_CLOSING_WAIT 4000 /* in .01 sec */ | |
87 | ||
88 | #define EDGE_OUT_BUF_SIZE 1024 | |
89 | ||
90 | ||
91 | /* Product information read from the Edgeport */ | |
92 | struct product_info | |
93 | { | |
94 | int TiMode; // Current TI Mode | |
95 | __u8 hardware_type; // Type of hardware | |
96 | } __attribute__((packed)); | |
97 | ||
98 | /* circular buffer */ | |
99 | struct edge_buf { | |
100 | unsigned int buf_size; | |
101 | char *buf_buf; | |
102 | char *buf_get; | |
103 | char *buf_put; | |
104 | }; | |
105 | ||
106 | struct edgeport_port { | |
107 | __u16 uart_base; | |
108 | __u16 dma_address; | |
109 | __u8 shadow_msr; | |
110 | __u8 shadow_mcr; | |
111 | __u8 shadow_lsr; | |
112 | __u8 lsr_mask; | |
113 | __u32 ump_read_timeout; /* Number of miliseconds the UMP will | |
114 | wait without data before completing | |
115 | a read short */ | |
116 | int baud_rate; | |
117 | int close_pending; | |
118 | int lsr_event; | |
119 | struct edgeport_uart_buf_desc tx; | |
120 | struct async_icount icount; | |
121 | wait_queue_head_t delta_msr_wait; /* for handling sleeping while | |
122 | waiting for msr change to | |
123 | happen */ | |
124 | struct edgeport_serial *edge_serial; | |
125 | struct usb_serial_port *port; | |
126 | __u8 bUartMode; /* Port type, 0: RS232, etc. */ | |
127 | spinlock_t ep_lock; | |
128 | int ep_read_urb_state; | |
129 | int ep_write_urb_in_use; | |
130 | struct edge_buf *ep_out_buf; | |
131 | }; | |
132 | ||
133 | struct edgeport_serial { | |
134 | struct product_info product_info; | |
135 | u8 TI_I2C_Type; // Type of I2C in UMP | |
136 | u8 TiReadI2C; // Set to TRUE if we have read the I2c in Boot Mode | |
137 | struct semaphore es_sem; | |
138 | int num_ports_open; | |
139 | struct usb_serial *serial; | |
140 | }; | |
141 | ||
142 | ||
143 | /* Devices that this driver supports */ | |
144 | static struct usb_device_id edgeport_1port_id_table [] = { | |
145 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) }, | |
146 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) }, | |
147 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) }, | |
148 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) }, | |
149 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) }, | |
150 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) }, | |
151 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) }, | |
152 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) }, | |
153 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) }, | |
154 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) }, | |
155 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) }, | |
156 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) }, | |
157 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) }, | |
158 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) }, | |
159 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) }, | |
160 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) }, | |
161 | { } | |
162 | }; | |
163 | ||
164 | static struct usb_device_id edgeport_2port_id_table [] = { | |
165 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) }, | |
166 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) }, | |
167 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) }, | |
168 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) }, | |
169 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) }, | |
170 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) }, | |
171 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) }, | |
172 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) }, | |
173 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) }, | |
174 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) }, | |
175 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) }, | |
176 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) }, | |
177 | // The 4-port shows up as two 2-port devices | |
178 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) }, | |
179 | { } | |
180 | }; | |
181 | ||
182 | /* Devices that this driver supports */ | |
183 | static struct usb_device_id id_table_combined [] = { | |
184 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) }, | |
185 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) }, | |
186 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) }, | |
187 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) }, | |
188 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) }, | |
189 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) }, | |
190 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) }, | |
191 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) }, | |
192 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) }, | |
193 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) }, | |
194 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) }, | |
195 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) }, | |
196 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) }, | |
197 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) }, | |
198 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) }, | |
199 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) }, | |
200 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) }, | |
201 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) }, | |
202 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) }, | |
203 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) }, | |
204 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) }, | |
205 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) }, | |
206 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) }, | |
207 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) }, | |
208 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) }, | |
209 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) }, | |
210 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) }, | |
211 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) }, | |
212 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) }, | |
213 | { } | |
214 | }; | |
215 | ||
216 | MODULE_DEVICE_TABLE (usb, id_table_combined); | |
217 | ||
218 | static struct usb_driver io_driver = { | |
1da177e4 LT |
219 | .name = "io_ti", |
220 | .probe = usb_serial_probe, | |
221 | .disconnect = usb_serial_disconnect, | |
222 | .id_table = id_table_combined, | |
ba9dc657 | 223 | .no_dynamic_id = 1, |
1da177e4 LT |
224 | }; |
225 | ||
226 | ||
227 | static struct EDGE_FIRMWARE_VERSION_INFO OperationalCodeImageVersion; | |
228 | ||
229 | static int debug; | |
230 | ||
231 | static int TIStayInBootMode = 0; | |
232 | static int low_latency = EDGE_LOW_LATENCY; | |
233 | static int closing_wait = EDGE_CLOSING_WAIT; | |
234 | static int ignore_cpu_rev = 0; | |
235 | ||
236 | ||
237 | static void edge_tty_recv(struct device *dev, struct tty_struct *tty, unsigned char *data, int length); | |
238 | ||
239 | static void stop_read(struct edgeport_port *edge_port); | |
240 | static int restart_read(struct edgeport_port *edge_port); | |
241 | ||
242 | static void edge_set_termios (struct usb_serial_port *port, struct termios *old_termios); | |
243 | static void edge_send(struct usb_serial_port *port); | |
244 | ||
245 | /* circular buffer */ | |
246 | static struct edge_buf *edge_buf_alloc(unsigned int size); | |
247 | static void edge_buf_free(struct edge_buf *eb); | |
248 | static void edge_buf_clear(struct edge_buf *eb); | |
249 | static unsigned int edge_buf_data_avail(struct edge_buf *eb); | |
250 | static unsigned int edge_buf_space_avail(struct edge_buf *eb); | |
251 | static unsigned int edge_buf_put(struct edge_buf *eb, const char *buf, | |
252 | unsigned int count); | |
253 | static unsigned int edge_buf_get(struct edge_buf *eb, char *buf, | |
254 | unsigned int count); | |
255 | ||
256 | ||
257 | static int TIReadVendorRequestSync (struct usb_device *dev, | |
258 | __u8 request, | |
259 | __u16 value, | |
260 | __u16 index, | |
261 | u8 *data, | |
262 | int size) | |
263 | { | |
264 | int status; | |
265 | ||
266 | status = usb_control_msg (dev, | |
267 | usb_rcvctrlpipe(dev, 0), | |
268 | request, | |
269 | (USB_TYPE_VENDOR | | |
270 | USB_RECIP_DEVICE | | |
271 | USB_DIR_IN), | |
272 | value, | |
273 | index, | |
274 | data, | |
275 | size, | |
276 | 1000); | |
277 | if (status < 0) | |
278 | return status; | |
279 | if (status != size) { | |
280 | dbg ("%s - wanted to write %d, but only wrote %d", | |
281 | __FUNCTION__, size, status); | |
282 | return -ECOMM; | |
283 | } | |
284 | return 0; | |
285 | } | |
286 | ||
287 | static int TISendVendorRequestSync (struct usb_device *dev, | |
288 | __u8 request, | |
289 | __u16 value, | |
290 | __u16 index, | |
291 | u8 *data, | |
292 | int size) | |
293 | { | |
294 | int status; | |
295 | ||
296 | status = usb_control_msg (dev, | |
297 | usb_sndctrlpipe(dev, 0), | |
298 | request, | |
299 | (USB_TYPE_VENDOR | | |
300 | USB_RECIP_DEVICE | | |
301 | USB_DIR_OUT), | |
302 | value, | |
303 | index, | |
304 | data, | |
305 | size, | |
306 | 1000); | |
307 | if (status < 0) | |
308 | return status; | |
309 | if (status != size) { | |
310 | dbg ("%s - wanted to write %d, but only wrote %d", | |
311 | __FUNCTION__, size, status); | |
312 | return -ECOMM; | |
313 | } | |
314 | return 0; | |
315 | } | |
316 | ||
317 | static int TIWriteCommandSync (struct usb_device *dev, __u8 command, | |
318 | __u8 moduleid, __u16 value, u8 *data, | |
319 | int size) | |
320 | { | |
321 | return TISendVendorRequestSync (dev, | |
322 | command, // Request | |
323 | value, // wValue | |
324 | moduleid, // wIndex | |
325 | data, // TransferBuffer | |
326 | size); // TransferBufferLength | |
327 | ||
328 | } | |
329 | ||
330 | /* clear tx/rx buffers and fifo in TI UMP */ | |
331 | static int TIPurgeDataSync (struct usb_serial_port *port, __u16 mask) | |
332 | { | |
333 | int port_number = port->number - port->serial->minor; | |
334 | ||
335 | dbg ("%s - port %d, mask %x", __FUNCTION__, port_number, mask); | |
336 | ||
337 | return TIWriteCommandSync (port->serial->dev, | |
338 | UMPC_PURGE_PORT, | |
339 | (__u8)(UMPM_UART1_PORT + port_number), | |
340 | mask, | |
341 | NULL, | |
342 | 0); | |
343 | } | |
344 | ||
345 | /** | |
346 | * TIReadDownloadMemory - Read edgeport memory from TI chip | |
347 | * @dev: usb device pointer | |
348 | * @start_address: Device CPU address at which to read | |
349 | * @length: Length of above data | |
350 | * @address_type: Can read both XDATA and I2C | |
351 | * @buffer: pointer to input data buffer | |
352 | */ | |
353 | static int TIReadDownloadMemory(struct usb_device *dev, int start_address, | |
354 | int length, __u8 address_type, __u8 *buffer) | |
355 | { | |
356 | int status = 0; | |
357 | __u8 read_length; | |
358 | __be16 be_start_address; | |
359 | ||
360 | dbg ("%s - @ %x for %d", __FUNCTION__, start_address, length); | |
361 | ||
362 | /* Read in blocks of 64 bytes | |
363 | * (TI firmware can't handle more than 64 byte reads) | |
364 | */ | |
365 | while (length) { | |
366 | if (length > 64) | |
367 | read_length= 64; | |
368 | else | |
369 | read_length = (__u8)length; | |
370 | ||
371 | if (read_length > 1) { | |
372 | dbg ("%s - @ %x for %d", __FUNCTION__, | |
373 | start_address, read_length); | |
374 | } | |
375 | be_start_address = cpu_to_be16 (start_address); | |
376 | status = TIReadVendorRequestSync (dev, | |
377 | UMPC_MEMORY_READ, // Request | |
378 | (__u16)address_type, // wValue (Address type) | |
379 | (__force __u16)be_start_address, // wIndex (Address to read) | |
380 | buffer, // TransferBuffer | |
381 | read_length); // TransferBufferLength | |
382 | ||
383 | if (status) { | |
384 | dbg ("%s - ERROR %x", __FUNCTION__, status); | |
385 | return status; | |
386 | } | |
387 | ||
388 | if (read_length > 1) { | |
389 | usb_serial_debug_data(debug, &dev->dev, __FUNCTION__, | |
390 | read_length, buffer); | |
391 | } | |
392 | ||
393 | /* Update pointers/length */ | |
394 | start_address += read_length; | |
395 | buffer += read_length; | |
396 | length -= read_length; | |
397 | } | |
398 | ||
399 | return status; | |
400 | } | |
401 | ||
402 | static int TIReadRam (struct usb_device *dev, int start_address, int length, __u8 *buffer) | |
403 | { | |
404 | return TIReadDownloadMemory (dev, | |
405 | start_address, | |
406 | length, | |
407 | DTK_ADDR_SPACE_XDATA, | |
408 | buffer); | |
409 | } | |
410 | ||
411 | /* Read edgeport memory to a given block */ | |
412 | static int TIReadBootMemory (struct edgeport_serial *serial, int start_address, int length, __u8 * buffer) | |
413 | { | |
414 | int status = 0; | |
415 | int i; | |
416 | ||
417 | for (i=0; i< length; i++) { | |
418 | status = TIReadVendorRequestSync (serial->serial->dev, | |
419 | UMPC_MEMORY_READ, // Request | |
420 | serial->TI_I2C_Type, // wValue (Address type) | |
421 | (__u16)(start_address+i), // wIndex | |
422 | &buffer[i], // TransferBuffer | |
423 | 0x01); // TransferBufferLength | |
424 | if (status) { | |
425 | dbg ("%s - ERROR %x", __FUNCTION__, status); | |
426 | return status; | |
427 | } | |
428 | } | |
429 | ||
430 | dbg ("%s - start_address = %x, length = %d", __FUNCTION__, start_address, length); | |
431 | usb_serial_debug_data(debug, &serial->serial->dev->dev, __FUNCTION__, length, buffer); | |
432 | ||
433 | serial->TiReadI2C = 1; | |
434 | ||
435 | return status; | |
436 | } | |
437 | ||
438 | /* Write given block to TI EPROM memory */ | |
439 | static int TIWriteBootMemory (struct edgeport_serial *serial, int start_address, int length, __u8 *buffer) | |
440 | { | |
441 | int status = 0; | |
442 | int i; | |
443 | __u8 temp; | |
444 | ||
445 | /* Must do a read before write */ | |
446 | if (!serial->TiReadI2C) { | |
447 | status = TIReadBootMemory(serial, 0, 1, &temp); | |
448 | if (status) | |
449 | return status; | |
450 | } | |
451 | ||
452 | for (i=0; i < length; ++i) { | |
453 | status = TISendVendorRequestSync (serial->serial->dev, | |
454 | UMPC_MEMORY_WRITE, // Request | |
455 | buffer[i], // wValue | |
456 | (__u16)(i+start_address), // wIndex | |
457 | NULL, // TransferBuffer | |
458 | 0); // TransferBufferLength | |
459 | if (status) | |
460 | return status; | |
461 | } | |
462 | ||
463 | dbg ("%s - start_sddr = %x, length = %d", __FUNCTION__, start_address, length); | |
464 | usb_serial_debug_data(debug, &serial->serial->dev->dev, __FUNCTION__, length, buffer); | |
465 | ||
466 | return status; | |
467 | } | |
468 | ||
469 | ||
470 | /* Write edgeport I2C memory to TI chip */ | |
471 | static int TIWriteDownloadI2C (struct edgeport_serial *serial, int start_address, int length, __u8 address_type, __u8 *buffer) | |
472 | { | |
473 | int status = 0; | |
474 | int write_length; | |
475 | __be16 be_start_address; | |
476 | ||
477 | /* We can only send a maximum of 1 aligned byte page at a time */ | |
478 | ||
479 | /* calulate the number of bytes left in the first page */ | |
480 | write_length = EPROM_PAGE_SIZE - (start_address & (EPROM_PAGE_SIZE - 1)); | |
481 | ||
482 | if (write_length > length) | |
483 | write_length = length; | |
484 | ||
485 | dbg ("%s - BytesInFirstPage Addr = %x, length = %d", __FUNCTION__, start_address, write_length); | |
486 | usb_serial_debug_data(debug, &serial->serial->dev->dev, __FUNCTION__, write_length, buffer); | |
487 | ||
488 | /* Write first page */ | |
489 | be_start_address = cpu_to_be16 (start_address); | |
490 | status = TISendVendorRequestSync (serial->serial->dev, | |
491 | UMPC_MEMORY_WRITE, // Request | |
492 | (__u16)address_type, // wValue | |
493 | (__force __u16)be_start_address, // wIndex | |
494 | buffer, // TransferBuffer | |
495 | write_length); | |
496 | if (status) { | |
497 | dbg ("%s - ERROR %d", __FUNCTION__, status); | |
498 | return status; | |
499 | } | |
500 | ||
501 | length -= write_length; | |
502 | start_address += write_length; | |
503 | buffer += write_length; | |
504 | ||
505 | /* We should be aligned now -- can write max page size bytes at a time */ | |
506 | while (length) { | |
507 | if (length > EPROM_PAGE_SIZE) | |
508 | write_length = EPROM_PAGE_SIZE; | |
509 | else | |
510 | write_length = length; | |
511 | ||
512 | dbg ("%s - Page Write Addr = %x, length = %d", __FUNCTION__, start_address, write_length); | |
513 | usb_serial_debug_data(debug, &serial->serial->dev->dev, __FUNCTION__, write_length, buffer); | |
514 | ||
515 | /* Write next page */ | |
516 | be_start_address = cpu_to_be16 (start_address); | |
517 | status = TISendVendorRequestSync (serial->serial->dev, | |
518 | UMPC_MEMORY_WRITE, // Request | |
519 | (__u16)address_type, // wValue | |
520 | (__force __u16)be_start_address, // wIndex | |
521 | buffer, // TransferBuffer | |
522 | write_length); // TransferBufferLength | |
523 | if (status) { | |
524 | dev_err (&serial->serial->dev->dev, "%s - ERROR %d\n", __FUNCTION__, status); | |
525 | return status; | |
526 | } | |
527 | ||
528 | length -= write_length; | |
529 | start_address += write_length; | |
530 | buffer += write_length; | |
531 | } | |
532 | return status; | |
533 | } | |
534 | ||
535 | /* Examine the UMP DMA registers and LSR | |
536 | * | |
537 | * Check the MSBit of the X and Y DMA byte count registers. | |
538 | * A zero in this bit indicates that the TX DMA buffers are empty | |
539 | * then check the TX Empty bit in the UART. | |
540 | */ | |
541 | static int TIIsTxActive (struct edgeport_port *port) | |
542 | { | |
543 | int status; | |
544 | struct out_endpoint_desc_block *oedb; | |
545 | __u8 *lsr; | |
546 | int bytes_left = 0; | |
547 | ||
548 | oedb = kmalloc (sizeof (* oedb), GFP_KERNEL); | |
549 | if (!oedb) { | |
550 | dev_err (&port->port->dev, "%s - out of memory\n", __FUNCTION__); | |
551 | return -ENOMEM; | |
552 | } | |
553 | ||
554 | lsr = kmalloc (1, GFP_KERNEL); /* Sigh, that's right, just one byte, | |
555 | as not all platforms can do DMA | |
556 | from stack */ | |
557 | if (!lsr) { | |
558 | kfree(oedb); | |
559 | return -ENOMEM; | |
560 | } | |
561 | /* Read the DMA Count Registers */ | |
562 | status = TIReadRam (port->port->serial->dev, | |
563 | port->dma_address, | |
564 | sizeof( *oedb), | |
565 | (void *)oedb); | |
566 | ||
567 | if (status) | |
568 | goto exit_is_tx_active; | |
569 | ||
570 | dbg ("%s - XByteCount 0x%X", __FUNCTION__, oedb->XByteCount); | |
571 | ||
572 | /* and the LSR */ | |
573 | status = TIReadRam (port->port->serial->dev, | |
574 | port->uart_base + UMPMEM_OFFS_UART_LSR, | |
575 | 1, | |
576 | lsr); | |
577 | ||
578 | if (status) | |
579 | goto exit_is_tx_active; | |
580 | dbg ("%s - LSR = 0x%X", __FUNCTION__, *lsr); | |
581 | ||
582 | /* If either buffer has data or we are transmitting then return TRUE */ | |
583 | if ((oedb->XByteCount & 0x80 ) != 0 ) | |
584 | bytes_left += 64; | |
585 | ||
586 | if ((*lsr & UMP_UART_LSR_TX_MASK ) == 0 ) | |
587 | bytes_left += 1; | |
588 | ||
589 | /* We return Not Active if we get any kind of error */ | |
590 | exit_is_tx_active: | |
591 | dbg ("%s - return %d", __FUNCTION__, bytes_left ); | |
592 | ||
593 | kfree(lsr); | |
594 | kfree(oedb); | |
595 | return bytes_left; | |
596 | } | |
597 | ||
598 | static void TIChasePort(struct edgeport_port *port, unsigned long timeout, int flush) | |
599 | { | |
600 | int baud_rate; | |
601 | struct tty_struct *tty = port->port->tty; | |
602 | wait_queue_t wait; | |
603 | unsigned long flags; | |
604 | ||
605 | if (!timeout) | |
606 | timeout = (HZ*EDGE_CLOSING_WAIT)/100; | |
607 | ||
608 | /* wait for data to drain from the buffer */ | |
609 | spin_lock_irqsave(&port->ep_lock, flags); | |
610 | init_waitqueue_entry(&wait, current); | |
611 | add_wait_queue(&tty->write_wait, &wait); | |
612 | for (;;) { | |
613 | set_current_state(TASK_INTERRUPTIBLE); | |
614 | if (edge_buf_data_avail(port->ep_out_buf) == 0 | |
615 | || timeout == 0 || signal_pending(current) | |
616 | || !usb_get_intfdata(port->port->serial->interface)) /* disconnect */ | |
617 | break; | |
618 | spin_unlock_irqrestore(&port->ep_lock, flags); | |
619 | timeout = schedule_timeout(timeout); | |
620 | spin_lock_irqsave(&port->ep_lock, flags); | |
621 | } | |
622 | set_current_state(TASK_RUNNING); | |
623 | remove_wait_queue(&tty->write_wait, &wait); | |
624 | if (flush) | |
625 | edge_buf_clear(port->ep_out_buf); | |
626 | spin_unlock_irqrestore(&port->ep_lock, flags); | |
627 | ||
628 | /* wait for data to drain from the device */ | |
629 | timeout += jiffies; | |
630 | while ((long)(jiffies - timeout) < 0 && !signal_pending(current) | |
631 | && usb_get_intfdata(port->port->serial->interface)) { /* not disconnected */ | |
632 | if (!TIIsTxActive(port)) | |
633 | break; | |
634 | msleep(10); | |
635 | } | |
636 | ||
637 | /* disconnected */ | |
638 | if (!usb_get_intfdata(port->port->serial->interface)) | |
639 | return; | |
640 | ||
641 | /* wait one more character time, based on baud rate */ | |
642 | /* (TIIsTxActive doesn't seem to wait for the last byte) */ | |
643 | if ((baud_rate=port->baud_rate) == 0) | |
644 | baud_rate = 50; | |
645 | msleep(max(1,(10000+baud_rate-1)/baud_rate)); | |
646 | } | |
647 | ||
648 | static int TIChooseConfiguration (struct usb_device *dev) | |
649 | { | |
650 | // There may be multiple configurations on this device, in which case | |
651 | // we would need to read and parse all of them to find out which one | |
652 | // we want. However, we just support one config at this point, | |
653 | // configuration # 1, which is Config Descriptor 0. | |
654 | ||
655 | dbg ("%s - Number of Interfaces = %d", __FUNCTION__, dev->config->desc.bNumInterfaces); | |
656 | dbg ("%s - MAX Power = %d", __FUNCTION__, dev->config->desc.bMaxPower*2); | |
657 | ||
658 | if (dev->config->desc.bNumInterfaces != 1) { | |
659 | dev_err (&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", __FUNCTION__); | |
660 | return -ENODEV; | |
661 | } | |
662 | ||
663 | return 0; | |
664 | } | |
665 | ||
666 | static int TIReadRom (struct edgeport_serial *serial, int start_address, int length, __u8 *buffer) | |
667 | { | |
668 | int status; | |
669 | ||
670 | if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { | |
671 | status = TIReadDownloadMemory (serial->serial->dev, | |
672 | start_address, | |
673 | length, | |
674 | serial->TI_I2C_Type, | |
675 | buffer); | |
676 | } else { | |
677 | status = TIReadBootMemory (serial, | |
678 | start_address, | |
679 | length, | |
680 | buffer); | |
681 | } | |
682 | ||
683 | return status; | |
684 | } | |
685 | ||
686 | static int TIWriteRom (struct edgeport_serial *serial, int start_address, int length, __u8 *buffer) | |
687 | { | |
688 | if (serial->product_info.TiMode == TI_MODE_BOOT) | |
689 | return TIWriteBootMemory (serial, | |
690 | start_address, | |
691 | length, | |
692 | buffer); | |
693 | ||
694 | if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) | |
695 | return TIWriteDownloadI2C (serial, | |
696 | start_address, | |
697 | length, | |
698 | serial->TI_I2C_Type, | |
699 | buffer); | |
700 | ||
701 | return -EINVAL; | |
702 | } | |
703 | ||
704 | ||
705 | ||
706 | /* Read a descriptor header from I2C based on type */ | |
707 | static int TIGetDescriptorAddress (struct edgeport_serial *serial, int desc_type, struct ti_i2c_desc *rom_desc) | |
708 | { | |
709 | int start_address; | |
710 | int status; | |
711 | ||
712 | /* Search for requested descriptor in I2C */ | |
713 | start_address = 2; | |
714 | do { | |
715 | status = TIReadRom (serial, | |
716 | start_address, | |
717 | sizeof(struct ti_i2c_desc), | |
718 | (__u8 *)rom_desc ); | |
719 | if (status) | |
720 | return 0; | |
721 | ||
722 | if (rom_desc->Type == desc_type) | |
723 | return start_address; | |
724 | ||
725 | start_address = start_address + sizeof(struct ti_i2c_desc) + rom_desc->Size; | |
726 | ||
727 | } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type); | |
728 | ||
729 | return 0; | |
730 | } | |
731 | ||
732 | /* Validate descriptor checksum */ | |
733 | static int ValidChecksum(struct ti_i2c_desc *rom_desc, __u8 *buffer) | |
734 | { | |
735 | __u16 i; | |
736 | __u8 cs = 0; | |
737 | ||
738 | for (i=0; i < rom_desc->Size; i++) { | |
739 | cs = (__u8)(cs + buffer[i]); | |
740 | } | |
741 | if (cs != rom_desc->CheckSum) { | |
742 | dbg ("%s - Mismatch %x - %x", __FUNCTION__, rom_desc->CheckSum, cs); | |
743 | return -EINVAL; | |
744 | } | |
745 | return 0; | |
746 | } | |
747 | ||
748 | /* Make sure that the I2C image is good */ | |
749 | static int TiValidateI2cImage (struct edgeport_serial *serial) | |
750 | { | |
751 | struct device *dev = &serial->serial->dev->dev; | |
752 | int status = 0; | |
753 | struct ti_i2c_desc *rom_desc; | |
754 | int start_address = 2; | |
755 | __u8 *buffer; | |
756 | __u16 ttype; | |
757 | ||
758 | rom_desc = kmalloc (sizeof (*rom_desc), GFP_KERNEL); | |
759 | if (!rom_desc) { | |
760 | dev_err (dev, "%s - out of memory\n", __FUNCTION__); | |
761 | return -ENOMEM; | |
762 | } | |
763 | buffer = kmalloc (TI_MAX_I2C_SIZE, GFP_KERNEL); | |
764 | if (!buffer) { | |
765 | dev_err (dev, "%s - out of memory when allocating buffer\n", __FUNCTION__); | |
766 | kfree (rom_desc); | |
767 | return -ENOMEM; | |
768 | } | |
769 | ||
770 | // Read the first byte (Signature0) must be 0x52 or 0x10 | |
771 | status = TIReadRom (serial, 0, 1, buffer); | |
772 | if (status) | |
773 | goto ExitTiValidateI2cImage; | |
774 | ||
775 | if (*buffer != UMP5152 && *buffer != UMP3410) { | |
776 | dev_err (dev, "%s - invalid buffer signature\n", __FUNCTION__); | |
777 | status = -ENODEV; | |
778 | goto ExitTiValidateI2cImage; | |
779 | } | |
780 | ||
781 | do { | |
782 | // Validate the I2C | |
783 | status = TIReadRom (serial, | |
784 | start_address, | |
785 | sizeof(struct ti_i2c_desc), | |
786 | (__u8 *)rom_desc); | |
787 | if (status) | |
788 | break; | |
789 | ||
790 | if ((start_address + sizeof(struct ti_i2c_desc) + rom_desc->Size) > TI_MAX_I2C_SIZE) { | |
791 | status = -ENODEV; | |
792 | dbg ("%s - structure too big, erroring out.", __FUNCTION__); | |
793 | break; | |
794 | } | |
795 | ||
796 | dbg ("%s Type = 0x%x", __FUNCTION__, rom_desc->Type); | |
797 | ||
798 | // Skip type 2 record | |
799 | ttype = rom_desc->Type & 0x0f; | |
800 | if ( ttype != I2C_DESC_TYPE_FIRMWARE_BASIC | |
801 | && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO ) { | |
802 | // Read the descriptor data | |
803 | status = TIReadRom(serial, | |
804 | start_address+sizeof(struct ti_i2c_desc), | |
805 | rom_desc->Size, | |
806 | buffer); | |
807 | if (status) | |
808 | break; | |
809 | ||
810 | status = ValidChecksum(rom_desc, buffer); | |
811 | if (status) | |
812 | break; | |
813 | } | |
814 | start_address = start_address + sizeof(struct ti_i2c_desc) + rom_desc->Size; | |
815 | ||
816 | } while ((rom_desc->Type != I2C_DESC_TYPE_ION) && (start_address < TI_MAX_I2C_SIZE)); | |
817 | ||
818 | if ((rom_desc->Type != I2C_DESC_TYPE_ION) || (start_address > TI_MAX_I2C_SIZE)) | |
819 | status = -ENODEV; | |
820 | ||
821 | ExitTiValidateI2cImage: | |
822 | kfree (buffer); | |
823 | kfree (rom_desc); | |
824 | return status; | |
825 | } | |
826 | ||
827 | static int TIReadManufDescriptor (struct edgeport_serial *serial, __u8 *buffer) | |
828 | { | |
829 | int status; | |
830 | int start_address; | |
831 | struct ti_i2c_desc *rom_desc; | |
832 | struct edge_ti_manuf_descriptor *desc; | |
833 | ||
834 | rom_desc = kmalloc (sizeof (*rom_desc), GFP_KERNEL); | |
835 | if (!rom_desc) { | |
836 | dev_err (&serial->serial->dev->dev, "%s - out of memory\n", __FUNCTION__); | |
837 | return -ENOMEM; | |
838 | } | |
839 | start_address = TIGetDescriptorAddress (serial, I2C_DESC_TYPE_ION, rom_desc); | |
840 | ||
841 | if (!start_address) { | |
842 | dbg ("%s - Edge Descriptor not found in I2C", __FUNCTION__); | |
843 | status = -ENODEV; | |
844 | goto exit; | |
845 | } | |
846 | ||
847 | // Read the descriptor data | |
848 | status = TIReadRom (serial, | |
849 | start_address+sizeof(struct ti_i2c_desc), | |
850 | rom_desc->Size, | |
851 | buffer); | |
852 | if (status) | |
853 | goto exit; | |
854 | ||
855 | status = ValidChecksum(rom_desc, buffer); | |
856 | ||
857 | desc = (struct edge_ti_manuf_descriptor *)buffer; | |
858 | dbg ( "%s - IonConfig 0x%x", __FUNCTION__, desc->IonConfig ); | |
859 | dbg ( "%s - Version %d", __FUNCTION__, desc->Version ); | |
860 | dbg ( "%s - Cpu/Board 0x%x", __FUNCTION__, desc->CpuRev_BoardRev ); | |
861 | dbg ( "%s - NumPorts %d", __FUNCTION__, desc->NumPorts ); | |
862 | dbg ( "%s - NumVirtualPorts %d", __FUNCTION__, desc->NumVirtualPorts ); | |
863 | dbg ( "%s - TotalPorts %d", __FUNCTION__, desc->TotalPorts ); | |
864 | ||
865 | exit: | |
866 | kfree (rom_desc); | |
867 | return status; | |
868 | } | |
869 | ||
870 | /* Build firmware header used for firmware update */ | |
871 | static int BuildI2CFirmwareHeader (__u8 *header, struct device *dev) | |
872 | { | |
873 | __u8 *buffer; | |
874 | int buffer_size; | |
875 | int i; | |
876 | __u8 cs = 0; | |
877 | struct ti_i2c_desc *i2c_header; | |
878 | struct ti_i2c_image_header *img_header; | |
879 | struct ti_i2c_firmware_rec *firmware_rec; | |
880 | ||
881 | // In order to update the I2C firmware we must change the type 2 record to type 0xF2. | |
882 | // This will force the UMP to come up in Boot Mode. Then while in boot mode, the driver | |
883 | // will download the latest firmware (padded to 15.5k) into the UMP ram. | |
884 | // And finally when the device comes back up in download mode the driver will cause | |
885 | // the new firmware to be copied from the UMP Ram to I2C and the firmware will update | |
886 | // the record type from 0xf2 to 0x02. | |
887 | ||
888 | // Allocate a 15.5k buffer + 2 bytes for version number (Firmware Record) | |
889 | buffer_size = (((1024 * 16) - 512 )+ sizeof(struct ti_i2c_firmware_rec)); | |
890 | ||
891 | buffer = kmalloc (buffer_size, GFP_KERNEL); | |
892 | if (!buffer) { | |
893 | dev_err (dev, "%s - out of memory\n", __FUNCTION__); | |
894 | return -ENOMEM; | |
895 | } | |
896 | ||
897 | // Set entire image of 0xffs | |
898 | memset (buffer, 0xff, buffer_size); | |
899 | ||
900 | // Copy version number into firmware record | |
901 | firmware_rec = (struct ti_i2c_firmware_rec *)buffer; | |
902 | ||
903 | firmware_rec->Ver_Major = OperationalCodeImageVersion.MajorVersion; | |
904 | firmware_rec->Ver_Minor = OperationalCodeImageVersion.MinorVersion; | |
905 | ||
906 | // Pointer to fw_down memory image | |
907 | img_header = (struct ti_i2c_image_header *)&PagableOperationalCodeImage[0]; | |
908 | ||
909 | memcpy (buffer + sizeof(struct ti_i2c_firmware_rec), | |
910 | &PagableOperationalCodeImage[sizeof(struct ti_i2c_image_header)], | |
911 | le16_to_cpu(img_header->Length)); | |
912 | ||
913 | for (i=0; i < buffer_size; i++) { | |
914 | cs = (__u8)(cs + buffer[i]); | |
915 | } | |
916 | ||
917 | kfree (buffer); | |
918 | ||
919 | // Build new header | |
920 | i2c_header = (struct ti_i2c_desc *)header; | |
921 | firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data; | |
922 | ||
923 | i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK; | |
924 | i2c_header->Size = (__u16)buffer_size; | |
925 | i2c_header->CheckSum = cs; | |
926 | firmware_rec->Ver_Major = OperationalCodeImageVersion.MajorVersion; | |
927 | firmware_rec->Ver_Minor = OperationalCodeImageVersion.MinorVersion; | |
928 | ||
929 | return 0; | |
930 | } | |
931 | ||
932 | /* Try to figure out what type of I2c we have */ | |
933 | static int TIGetI2cTypeInBootMode (struct edgeport_serial *serial) | |
934 | { | |
935 | int status; | |
936 | __u8 data; | |
937 | ||
938 | // Try to read type 2 | |
939 | status = TIReadVendorRequestSync (serial->serial->dev, | |
940 | UMPC_MEMORY_READ, // Request | |
941 | DTK_ADDR_SPACE_I2C_TYPE_II, // wValue (Address type) | |
942 | 0, // wIndex | |
943 | &data, // TransferBuffer | |
944 | 0x01); // TransferBufferLength | |
945 | if (status) | |
946 | dbg ("%s - read 2 status error = %d", __FUNCTION__, status); | |
947 | else | |
948 | dbg ("%s - read 2 data = 0x%x", __FUNCTION__, data); | |
949 | if ((!status) && (data == UMP5152 || data == UMP3410)) { | |
950 | dbg ("%s - ROM_TYPE_II", __FUNCTION__); | |
951 | serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; | |
952 | return 0; | |
953 | } | |
954 | ||
955 | // Try to read type 3 | |
956 | status = TIReadVendorRequestSync (serial->serial->dev, | |
957 | UMPC_MEMORY_READ, // Request | |
958 | DTK_ADDR_SPACE_I2C_TYPE_III, // wValue (Address type) | |
959 | 0, // wIndex | |
960 | &data, // TransferBuffer | |
961 | 0x01); // TransferBufferLength | |
962 | if (status) | |
963 | dbg ("%s - read 3 status error = %d", __FUNCTION__, status); | |
964 | else | |
965 | dbg ("%s - read 2 data = 0x%x", __FUNCTION__, data); | |
966 | if ((!status) && (data == UMP5152 || data == UMP3410)) { | |
967 | dbg ("%s - ROM_TYPE_III", __FUNCTION__); | |
968 | serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III; | |
969 | return 0; | |
970 | } | |
971 | ||
972 | dbg ("%s - Unknown", __FUNCTION__); | |
973 | serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; | |
974 | return -ENODEV; | |
975 | } | |
976 | ||
977 | static int TISendBulkTransferSync (struct usb_serial *serial, void *buffer, int length, int *num_sent) | |
978 | { | |
979 | int status; | |
980 | ||
981 | status = usb_bulk_msg (serial->dev, | |
982 | usb_sndbulkpipe(serial->dev, | |
983 | serial->port[0]->bulk_out_endpointAddress), | |
984 | buffer, | |
985 | length, | |
986 | num_sent, | |
987 | 1000); | |
988 | return status; | |
989 | } | |
990 | ||
991 | /* Download given firmware image to the device (IN BOOT MODE) */ | |
992 | static int TIDownloadCodeImage (struct edgeport_serial *serial, __u8 *image, int image_length) | |
993 | { | |
994 | int status = 0; | |
995 | int pos; | |
996 | int transfer; | |
997 | int done; | |
998 | ||
999 | // Transfer firmware image | |
1000 | for (pos = 0; pos < image_length; ) { | |
1001 | // Read the next buffer from file | |
1002 | transfer = image_length - pos; | |
1003 | if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE) | |
1004 | transfer = EDGE_FW_BULK_MAX_PACKET_SIZE; | |
1005 | ||
1006 | // Transfer data | |
1007 | status = TISendBulkTransferSync (serial->serial, &image[pos], transfer, &done); | |
1008 | if (status) | |
1009 | break; | |
1010 | // Advance buffer pointer | |
1011 | pos += done; | |
1012 | } | |
1013 | ||
1014 | return status; | |
1015 | } | |
1016 | ||
1017 | // FIXME!!! | |
1018 | static int TIConfigureBootDevice (struct usb_device *dev) | |
1019 | { | |
1020 | return 0; | |
1021 | } | |
1022 | ||
1023 | /** | |
1024 | * DownloadTIFirmware - Download run-time operating firmware to the TI5052 | |
1025 | * | |
1026 | * This routine downloads the main operating code into the TI5052, using the | |
1027 | * boot code already burned into E2PROM or ROM. | |
1028 | */ | |
1029 | static int TIDownloadFirmware (struct edgeport_serial *serial) | |
1030 | { | |
1031 | struct device *dev = &serial->serial->dev->dev; | |
1032 | int status = 0; | |
1033 | int start_address; | |
1034 | struct edge_ti_manuf_descriptor *ti_manuf_desc; | |
1035 | struct usb_interface_descriptor *interface; | |
1036 | int download_cur_ver; | |
1037 | int download_new_ver; | |
1038 | ||
1039 | /* This routine is entered by both the BOOT mode and the Download mode | |
1040 | * We can determine which code is running by the reading the config | |
1041 | * descriptor and if we have only one bulk pipe it is in boot mode | |
1042 | */ | |
1043 | serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP; | |
1044 | ||
1045 | /* Default to type 2 i2c */ | |
1046 | serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; | |
1047 | ||
1048 | status = TIChooseConfiguration (serial->serial->dev); | |
1049 | if (status) | |
1050 | return status; | |
1051 | ||
1052 | interface = &serial->serial->interface->cur_altsetting->desc; | |
1053 | if (!interface) { | |
1054 | dev_err (dev, "%s - no interface set, error!\n", __FUNCTION__); | |
1055 | return -ENODEV; | |
1056 | } | |
1057 | ||
1058 | // Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING | |
1059 | // if we have more than one endpoint we are definitely in download mode | |
1060 | if (interface->bNumEndpoints > 1) | |
1061 | serial->product_info.TiMode = TI_MODE_DOWNLOAD; | |
1062 | else | |
1063 | // Otherwise we will remain in configuring mode | |
1064 | serial->product_info.TiMode = TI_MODE_CONFIGURING; | |
1065 | ||
1066 | // Save Download Version Number | |
1067 | OperationalCodeImageVersion.MajorVersion = PagableOperationalCodeImageVersion.MajorVersion; | |
1068 | OperationalCodeImageVersion.MinorVersion = PagableOperationalCodeImageVersion.MinorVersion; | |
1069 | OperationalCodeImageVersion.BuildNumber = PagableOperationalCodeImageVersion.BuildNumber; | |
1070 | ||
1071 | /********************************************************************/ | |
1072 | /* Download Mode */ | |
1073 | /********************************************************************/ | |
1074 | if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { | |
1075 | struct ti_i2c_desc *rom_desc; | |
1076 | ||
1077 | dbg ("%s - <<<<<<<<<<<<<<<RUNNING IN DOWNLOAD MODE>>>>>>>>>>", __FUNCTION__); | |
1078 | ||
1079 | status = TiValidateI2cImage (serial); | |
1080 | if (status) { | |
1081 | dbg ("%s - <<<<<<<<<<<<<<<DOWNLOAD MODE -- BAD I2C >>>>>>>>>>", | |
1082 | __FUNCTION__); | |
1083 | return status; | |
1084 | } | |
1085 | ||
1086 | /* Validate Hardware version number | |
1087 | * Read Manufacturing Descriptor from TI Based Edgeport | |
1088 | */ | |
1089 | ti_manuf_desc = kmalloc (sizeof (*ti_manuf_desc), GFP_KERNEL); | |
1090 | if (!ti_manuf_desc) { | |
1091 | dev_err (dev, "%s - out of memory.\n", __FUNCTION__); | |
1092 | return -ENOMEM; | |
1093 | } | |
1094 | status = TIReadManufDescriptor (serial, (__u8 *)ti_manuf_desc); | |
1095 | if (status) { | |
1096 | kfree (ti_manuf_desc); | |
1097 | return status; | |
1098 | } | |
1099 | ||
1100 | // Check version number of ION descriptor | |
1101 | if (!ignore_cpu_rev && TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev) < 2) { | |
1102 | dbg ( "%s - Wrong CPU Rev %d (Must be 2)", __FUNCTION__, | |
1103 | TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev)); | |
1104 | kfree (ti_manuf_desc); | |
1105 | return -EINVAL; | |
1106 | } | |
1107 | ||
1108 | rom_desc = kmalloc (sizeof (*rom_desc), GFP_KERNEL); | |
1109 | if (!rom_desc) { | |
1110 | dev_err (dev, "%s - out of memory.\n", __FUNCTION__); | |
1111 | kfree (ti_manuf_desc); | |
1112 | return -ENOMEM; | |
1113 | } | |
1114 | ||
1115 | // Search for type 2 record (firmware record) | |
1116 | if ((start_address = TIGetDescriptorAddress (serial, I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc)) != 0) { | |
1117 | struct ti_i2c_firmware_rec *firmware_version; | |
1118 | __u8 record; | |
1119 | ||
1120 | dbg ("%s - Found Type FIRMWARE (Type 2) record", __FUNCTION__); | |
1121 | ||
1122 | firmware_version = kmalloc (sizeof (*firmware_version), GFP_KERNEL); | |
1123 | if (!firmware_version) { | |
1124 | dev_err (dev, "%s - out of memory.\n", __FUNCTION__); | |
1125 | kfree (rom_desc); | |
1126 | kfree (ti_manuf_desc); | |
1127 | return -ENOMEM; | |
1128 | } | |
1129 | ||
1130 | // Validate version number | |
1131 | // Read the descriptor data | |
1132 | status = TIReadRom (serial, | |
1133 | start_address+sizeof(struct ti_i2c_desc), | |
1134 | sizeof(struct ti_i2c_firmware_rec), | |
1135 | (__u8 *)firmware_version); | |
1136 | if (status) { | |
1137 | kfree (firmware_version); | |
1138 | kfree (rom_desc); | |
1139 | kfree (ti_manuf_desc); | |
1140 | return status; | |
1141 | } | |
1142 | ||
1143 | // Check version number of download with current version in I2c | |
1144 | download_cur_ver = (firmware_version->Ver_Major << 8) + | |
1145 | (firmware_version->Ver_Minor); | |
1146 | download_new_ver = (OperationalCodeImageVersion.MajorVersion << 8) + | |
1147 | (OperationalCodeImageVersion.MinorVersion); | |
1148 | ||
1149 | dbg ("%s - >>>Firmware Versions Device %d.%d Driver %d.%d", | |
1150 | __FUNCTION__, | |
1151 | firmware_version->Ver_Major, | |
1152 | firmware_version->Ver_Minor, | |
1153 | OperationalCodeImageVersion.MajorVersion, | |
1154 | OperationalCodeImageVersion.MinorVersion); | |
1155 | ||
1156 | // Check if we have an old version in the I2C and update if necessary | |
1157 | if (download_cur_ver != download_new_ver) { | |
1158 | dbg ("%s - Update I2C Download from %d.%d to %d.%d", | |
1159 | __FUNCTION__, | |
1160 | firmware_version->Ver_Major, | |
1161 | firmware_version->Ver_Minor, | |
1162 | OperationalCodeImageVersion.MajorVersion, | |
1163 | OperationalCodeImageVersion.MinorVersion); | |
1164 | ||
1165 | // In order to update the I2C firmware we must change the type 2 record to type 0xF2. | |
1166 | // This will force the UMP to come up in Boot Mode. Then while in boot mode, the driver | |
1167 | // will download the latest firmware (padded to 15.5k) into the UMP ram. | |
1168 | // And finally when the device comes back up in download mode the driver will cause | |
1169 | // the new firmware to be copied from the UMP Ram to I2C and the firmware will update | |
1170 | // the record type from 0xf2 to 0x02. | |
1171 | ||
1172 | record = I2C_DESC_TYPE_FIRMWARE_BLANK; | |
1173 | ||
1174 | // Change the I2C Firmware record type to 0xf2 to trigger an update | |
1175 | status = TIWriteRom (serial, | |
1176 | start_address, | |
1177 | sizeof(record), | |
1178 | &record); | |
1179 | if (status) { | |
1180 | kfree (firmware_version); | |
1181 | kfree (rom_desc); | |
1182 | kfree (ti_manuf_desc); | |
1183 | return status; | |
1184 | } | |
1185 | ||
1186 | // verify the write -- must do this in order for write to | |
1187 | // complete before we do the hardware reset | |
1188 | status = TIReadRom (serial, | |
1189 | start_address, | |
1190 | sizeof(record), | |
1191 | &record); | |
1192 | ||
1193 | if (status) { | |
1194 | kfree (firmware_version); | |
1195 | kfree (rom_desc); | |
1196 | kfree (ti_manuf_desc); | |
1197 | return status; | |
1198 | } | |
1199 | ||
1200 | if (record != I2C_DESC_TYPE_FIRMWARE_BLANK) { | |
1201 | dev_err (dev, "%s - error resetting device\n", __FUNCTION__); | |
1202 | kfree (firmware_version); | |
1203 | kfree (rom_desc); | |
1204 | kfree (ti_manuf_desc); | |
1205 | return -ENODEV; | |
1206 | } | |
1207 | ||
1208 | dbg ("%s - HARDWARE RESET", __FUNCTION__); | |
1209 | ||
1210 | // Reset UMP -- Back to BOOT MODE | |
1211 | status = TISendVendorRequestSync (serial->serial->dev, | |
1212 | UMPC_HARDWARE_RESET, // Request | |
1213 | 0, // wValue | |
1214 | 0, // wIndex | |
1215 | NULL, // TransferBuffer | |
1216 | 0); // TransferBufferLength | |
1217 | ||
1218 | dbg ( "%s - HARDWARE RESET return %d", __FUNCTION__, status); | |
1219 | ||
1220 | /* return an error on purpose. */ | |
1221 | kfree (firmware_version); | |
1222 | kfree (rom_desc); | |
1223 | kfree (ti_manuf_desc); | |
1224 | return -ENODEV; | |
1225 | } | |
1226 | kfree (firmware_version); | |
1227 | } | |
1228 | // Search for type 0xF2 record (firmware blank record) | |
1229 | else if ((start_address = TIGetDescriptorAddress (serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) { | |
1230 | #define HEADER_SIZE (sizeof(struct ti_i2c_desc) + sizeof(struct ti_i2c_firmware_rec)) | |
1231 | __u8 *header; | |
1232 | __u8 *vheader; | |
1233 | ||
1234 | header = kmalloc (HEADER_SIZE, GFP_KERNEL); | |
1235 | if (!header) { | |
1236 | dev_err (dev, "%s - out of memory.\n", __FUNCTION__); | |
1237 | kfree (rom_desc); | |
1238 | kfree (ti_manuf_desc); | |
1239 | return -ENOMEM; | |
1240 | } | |
1241 | ||
1242 | vheader = kmalloc (HEADER_SIZE, GFP_KERNEL); | |
1243 | if (!vheader) { | |
1244 | dev_err (dev, "%s - out of memory.\n", __FUNCTION__); | |
1245 | kfree (header); | |
1246 | kfree (rom_desc); | |
1247 | kfree (ti_manuf_desc); | |
1248 | return -ENOMEM; | |
1249 | } | |
1250 | ||
1251 | dbg ("%s - Found Type BLANK FIRMWARE (Type F2) record", __FUNCTION__); | |
1252 | ||
1253 | // In order to update the I2C firmware we must change the type 2 record to type 0xF2. | |
1254 | // This will force the UMP to come up in Boot Mode. Then while in boot mode, the driver | |
1255 | // will download the latest firmware (padded to 15.5k) into the UMP ram. | |
1256 | // And finally when the device comes back up in download mode the driver will cause | |
1257 | // the new firmware to be copied from the UMP Ram to I2C and the firmware will update | |
1258 | // the record type from 0xf2 to 0x02. | |
1259 | status = BuildI2CFirmwareHeader(header, dev); | |
1260 | if (status) { | |
1261 | kfree (vheader); | |
1262 | kfree (header); | |
1263 | kfree (rom_desc); | |
1264 | kfree (ti_manuf_desc); | |
1265 | return status; | |
1266 | } | |
1267 | ||
1268 | // Update I2C with type 0xf2 record with correct size and checksum | |
1269 | status = TIWriteRom (serial, | |
1270 | start_address, | |
1271 | HEADER_SIZE, | |
1272 | header); | |
1273 | if (status) { | |
1274 | kfree (vheader); | |
1275 | kfree (header); | |
1276 | kfree (rom_desc); | |
1277 | kfree (ti_manuf_desc); | |
1278 | return status; | |
1279 | } | |
1280 | ||
1281 | // verify the write -- must do this in order for write to | |
1282 | // complete before we do the hardware reset | |
1283 | status = TIReadRom (serial, | |
1284 | start_address, | |
1285 | HEADER_SIZE, | |
1286 | vheader); | |
1287 | ||
1288 | if (status) { | |
1289 | dbg ("%s - can't read header back", __FUNCTION__); | |
1290 | kfree (vheader); | |
1291 | kfree (header); | |
1292 | kfree (rom_desc); | |
1293 | kfree (ti_manuf_desc); | |
1294 | return status; | |
1295 | } | |
1296 | if (memcmp(vheader, header, HEADER_SIZE)) { | |
1297 | dbg ("%s - write download record failed", __FUNCTION__); | |
1298 | kfree (vheader); | |
1299 | kfree (header); | |
1300 | kfree (rom_desc); | |
1301 | kfree (ti_manuf_desc); | |
1302 | return status; | |
1303 | } | |
1304 | ||
1305 | kfree (vheader); | |
1306 | kfree (header); | |
1307 | ||
1308 | dbg ("%s - Start firmware update", __FUNCTION__); | |
1309 | ||
1310 | // Tell firmware to copy download image into I2C | |
1311 | status = TISendVendorRequestSync (serial->serial->dev, | |
1312 | UMPC_COPY_DNLD_TO_I2C, // Request | |
1313 | 0, // wValue | |
1314 | 0, // wIndex | |
1315 | NULL, // TransferBuffer | |
1316 | 0); // TransferBufferLength | |
1317 | ||
1318 | dbg ("%s - Update complete 0x%x", __FUNCTION__, status); | |
1319 | if (status) { | |
1320 | dev_err (dev, "%s - UMPC_COPY_DNLD_TO_I2C failed\n", __FUNCTION__); | |
1321 | kfree (rom_desc); | |
1322 | kfree (ti_manuf_desc); | |
1323 | return status; | |
1324 | } | |
1325 | } | |
1326 | ||
1327 | // The device is running the download code | |
1328 | kfree (rom_desc); | |
1329 | kfree (ti_manuf_desc); | |
1330 | return 0; | |
1331 | } | |
1332 | ||
1333 | /********************************************************************/ | |
1334 | /* Boot Mode */ | |
1335 | /********************************************************************/ | |
1336 | dbg ("%s - <<<<<<<<<<<<<<<RUNNING IN BOOT MODE>>>>>>>>>>>>>>>", | |
1337 | __FUNCTION__); | |
1338 | ||
1339 | // Configure the TI device so we can use the BULK pipes for download | |
1340 | status = TIConfigureBootDevice (serial->serial->dev); | |
1341 | if (status) | |
1342 | return status; | |
1343 | ||
1344 | if (le16_to_cpu(serial->serial->dev->descriptor.idVendor) != USB_VENDOR_ID_ION) { | |
1345 | dbg ("%s - VID = 0x%x", __FUNCTION__, | |
1346 | le16_to_cpu(serial->serial->dev->descriptor.idVendor)); | |
1347 | serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; | |
1348 | goto StayInBootMode; | |
1349 | } | |
1350 | ||
1351 | // We have an ION device (I2c Must be programmed) | |
1352 | // Determine I2C image type | |
1353 | if (TIGetI2cTypeInBootMode(serial)) { | |
1354 | goto StayInBootMode; | |
1355 | } | |
1356 | ||
1357 | // Registry variable set? | |
1358 | if (TIStayInBootMode) { | |
1359 | dbg ("%s - TIStayInBootMode", __FUNCTION__); | |
1360 | goto StayInBootMode; | |
1361 | } | |
1362 | ||
1363 | // Check for ION Vendor ID and that the I2C is valid | |
1364 | if (!TiValidateI2cImage(serial)) { | |
1365 | struct ti_i2c_image_header *header; | |
1366 | int i; | |
1367 | __u8 cs = 0; | |
1368 | __u8 *buffer; | |
1369 | int buffer_size; | |
1370 | ||
1371 | /* Validate Hardware version number | |
1372 | * Read Manufacturing Descriptor from TI Based Edgeport | |
1373 | */ | |
1374 | ti_manuf_desc = kmalloc (sizeof (*ti_manuf_desc), GFP_KERNEL); | |
1375 | if (!ti_manuf_desc) { | |
1376 | dev_err (dev, "%s - out of memory.\n", __FUNCTION__); | |
1377 | return -ENOMEM; | |
1378 | } | |
1379 | status = TIReadManufDescriptor (serial, (__u8 *)ti_manuf_desc); | |
1380 | if (status) { | |
1381 | kfree (ti_manuf_desc); | |
1382 | goto StayInBootMode; | |
1383 | } | |
1384 | ||
1385 | // Check for version 2 | |
1386 | if (!ignore_cpu_rev && TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev) < 2) { | |
1387 | dbg ("%s - Wrong CPU Rev %d (Must be 2)", __FUNCTION__, | |
1388 | TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev)); | |
1389 | kfree (ti_manuf_desc); | |
1390 | goto StayInBootMode; | |
1391 | } | |
1392 | ||
1393 | kfree (ti_manuf_desc); | |
1394 | ||
1395 | // In order to update the I2C firmware we must change the type 2 record to type 0xF2. | |
1396 | // This will force the UMP to come up in Boot Mode. Then while in boot mode, the driver | |
1397 | // will download the latest firmware (padded to 15.5k) into the UMP ram. | |
1398 | // And finally when the device comes back up in download mode the driver will cause | |
1399 | // the new firmware to be copied from the UMP Ram to I2C and the firmware will update | |
1400 | // the record type from 0xf2 to 0x02. | |
1401 | ||
1402 | /* | |
1403 | * Do we really have to copy the whole firmware image, | |
1404 | * or could we do this in place! | |
1405 | */ | |
1406 | ||
1407 | // Allocate a 15.5k buffer + 3 byte header | |
1408 | buffer_size = (((1024 * 16) - 512) + sizeof(struct ti_i2c_image_header)); | |
1409 | buffer = kmalloc (buffer_size, GFP_KERNEL); | |
1410 | if (!buffer) { | |
1411 | dev_err (dev, "%s - out of memory\n", __FUNCTION__); | |
1412 | return -ENOMEM; | |
1413 | } | |
1414 | ||
1415 | // Initialize the buffer to 0xff (pad the buffer) | |
1416 | memset (buffer, 0xff, buffer_size); | |
1417 | ||
1418 | memcpy (buffer, &PagableOperationalCodeImage[0], PagableOperationalCodeSize); | |
1419 | ||
1420 | for(i = sizeof(struct ti_i2c_image_header); i < buffer_size; i++) { | |
1421 | cs = (__u8)(cs + buffer[i]); | |
1422 | } | |
1423 | ||
1424 | header = (struct ti_i2c_image_header *)buffer; | |
1425 | ||
1426 | // update length and checksum after padding | |
1427 | header->Length = cpu_to_le16((__u16)(buffer_size - sizeof(struct ti_i2c_image_header))); | |
1428 | header->CheckSum = cs; | |
1429 | ||
1430 | // Download the operational code | |
1431 | dbg ("%s - Downloading operational code image (TI UMP)", __FUNCTION__); | |
1432 | status = TIDownloadCodeImage (serial, buffer, buffer_size); | |
1433 | ||
1434 | kfree (buffer); | |
1435 | ||
1436 | if (status) { | |
1437 | dbg ("%s - Error downloading operational code image", __FUNCTION__); | |
1438 | return status; | |
1439 | } | |
1440 | ||
1441 | // Device will reboot | |
1442 | serial->product_info.TiMode = TI_MODE_TRANSITIONING; | |
1443 | ||
1444 | dbg ("%s - Download successful -- Device rebooting...", __FUNCTION__); | |
1445 | ||
1446 | /* return an error on purpose */ | |
1447 | return -ENODEV; | |
1448 | } | |
1449 | ||
1450 | StayInBootMode: | |
1451 | // Eprom is invalid or blank stay in boot mode | |
1452 | dbg ("%s - <<<<<<<<<<<<<<<STAYING IN BOOT MODE>>>>>>>>>>>>", __FUNCTION__); | |
1453 | serial->product_info.TiMode = TI_MODE_BOOT; | |
1454 | ||
1455 | return 0; | |
1456 | } | |
1457 | ||
1458 | ||
1459 | static int TISetDtr (struct edgeport_port *port) | |
1460 | { | |
1461 | int port_number = port->port->number - port->port->serial->minor; | |
1462 | ||
1463 | dbg ("%s", __FUNCTION__); | |
1464 | port->shadow_mcr |= MCR_DTR; | |
1465 | ||
1466 | return TIWriteCommandSync (port->port->serial->dev, | |
1467 | UMPC_SET_CLR_DTR, | |
1468 | (__u8)(UMPM_UART1_PORT + port_number), | |
1469 | 1, /* set */ | |
1470 | NULL, | |
1471 | 0); | |
1472 | } | |
1473 | ||
1474 | static int TIClearDtr (struct edgeport_port *port) | |
1475 | { | |
1476 | int port_number = port->port->number - port->port->serial->minor; | |
1477 | ||
1478 | dbg ("%s", __FUNCTION__); | |
1479 | port->shadow_mcr &= ~MCR_DTR; | |
1480 | ||
1481 | return TIWriteCommandSync (port->port->serial->dev, | |
1482 | UMPC_SET_CLR_DTR, | |
1483 | (__u8)(UMPM_UART1_PORT + port_number), | |
1484 | 0, /* clear */ | |
1485 | NULL, | |
1486 | 0); | |
1487 | } | |
1488 | ||
1489 | static int TISetRts (struct edgeport_port *port) | |
1490 | { | |
1491 | int port_number = port->port->number - port->port->serial->minor; | |
1492 | ||
1493 | dbg ("%s", __FUNCTION__); | |
1494 | port->shadow_mcr |= MCR_RTS; | |
1495 | ||
1496 | return TIWriteCommandSync (port->port->serial->dev, | |
1497 | UMPC_SET_CLR_RTS, | |
1498 | (__u8)(UMPM_UART1_PORT + port_number), | |
1499 | 1, /* set */ | |
1500 | NULL, | |
1501 | 0); | |
1502 | } | |
1503 | ||
1504 | static int TIClearRts (struct edgeport_port *port) | |
1505 | { | |
1506 | int port_number = port->port->number - port->port->serial->minor; | |
1507 | ||
1508 | dbg ("%s", __FUNCTION__); | |
1509 | port->shadow_mcr &= ~MCR_RTS; | |
1510 | ||
1511 | return TIWriteCommandSync (port->port->serial->dev, | |
1512 | UMPC_SET_CLR_RTS, | |
1513 | (__u8)(UMPM_UART1_PORT + port_number), | |
1514 | 0, /* clear */ | |
1515 | NULL, | |
1516 | 0); | |
1517 | } | |
1518 | ||
1519 | static int TISetLoopBack (struct edgeport_port *port) | |
1520 | { | |
1521 | int port_number = port->port->number - port->port->serial->minor; | |
1522 | ||
1523 | dbg ("%s", __FUNCTION__); | |
1524 | ||
1525 | return TIWriteCommandSync (port->port->serial->dev, | |
1526 | UMPC_SET_CLR_LOOPBACK, | |
1527 | (__u8)(UMPM_UART1_PORT + port_number), | |
1528 | 1, /* set */ | |
1529 | NULL, | |
1530 | 0); | |
1531 | } | |
1532 | ||
1533 | static int TIClearLoopBack (struct edgeport_port *port) | |
1534 | { | |
1535 | int port_number = port->port->number - port->port->serial->minor; | |
1536 | ||
1537 | dbg ("%s", __FUNCTION__); | |
1538 | ||
1539 | return TIWriteCommandSync (port->port->serial->dev, | |
1540 | UMPC_SET_CLR_LOOPBACK, | |
1541 | (__u8)(UMPM_UART1_PORT + port_number), | |
1542 | 0, /* clear */ | |
1543 | NULL, | |
1544 | 0); | |
1545 | } | |
1546 | ||
1547 | static int TISetBreak (struct edgeport_port *port) | |
1548 | { | |
1549 | int port_number = port->port->number - port->port->serial->minor; | |
1550 | ||
1551 | dbg ("%s", __FUNCTION__); | |
1552 | ||
1553 | return TIWriteCommandSync (port->port->serial->dev, | |
1554 | UMPC_SET_CLR_BREAK, | |
1555 | (__u8)(UMPM_UART1_PORT + port_number), | |
1556 | 1, /* set */ | |
1557 | NULL, | |
1558 | 0); | |
1559 | } | |
1560 | ||
1561 | static int TIClearBreak (struct edgeport_port *port) | |
1562 | { | |
1563 | int port_number = port->port->number - port->port->serial->minor; | |
1564 | ||
1565 | dbg ("%s", __FUNCTION__); | |
1566 | ||
1567 | return TIWriteCommandSync (port->port->serial->dev, | |
1568 | UMPC_SET_CLR_BREAK, | |
1569 | (__u8)(UMPM_UART1_PORT + port_number), | |
1570 | 0, /* clear */ | |
1571 | NULL, | |
1572 | 0); | |
1573 | } | |
1574 | ||
1575 | static int TIRestoreMCR (struct edgeport_port *port, __u8 mcr) | |
1576 | { | |
1577 | int status = 0; | |
1578 | ||
1579 | dbg ("%s - %x", __FUNCTION__, mcr); | |
1580 | ||
1581 | if (mcr & MCR_DTR) | |
1582 | status = TISetDtr (port); | |
1583 | else | |
1584 | status = TIClearDtr (port); | |
1585 | ||
1586 | if (status) | |
1587 | return status; | |
1588 | ||
1589 | if (mcr & MCR_RTS) | |
1590 | status = TISetRts (port); | |
1591 | else | |
1592 | status = TIClearRts (port); | |
1593 | ||
1594 | if (status) | |
1595 | return status; | |
1596 | ||
1597 | if (mcr & MCR_LOOPBACK) | |
1598 | status = TISetLoopBack (port); | |
1599 | else | |
1600 | status = TIClearLoopBack (port); | |
1601 | ||
1602 | return status; | |
1603 | } | |
1604 | ||
1605 | ||
1606 | ||
1607 | /* Convert TI LSR to standard UART flags */ | |
1608 | static __u8 MapLineStatus (__u8 ti_lsr) | |
1609 | { | |
1610 | __u8 lsr = 0; | |
1611 | ||
1612 | #define MAP_FLAG(flagUmp, flagUart) \ | |
1613 | if (ti_lsr & flagUmp) \ | |
1614 | lsr |= flagUart; | |
1615 | ||
1616 | MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */ | |
1617 | MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */ | |
1618 | MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */ | |
1619 | MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */ | |
1620 | MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* receive data available */ | |
1621 | MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* transmit holding register empty */ | |
1622 | ||
1623 | #undef MAP_FLAG | |
1624 | ||
1625 | return lsr; | |
1626 | } | |
1627 | ||
1628 | static void handle_new_msr (struct edgeport_port *edge_port, __u8 msr) | |
1629 | { | |
1630 | struct async_icount *icount; | |
1631 | struct tty_struct *tty; | |
1632 | ||
1633 | dbg ("%s - %02x", __FUNCTION__, msr); | |
1634 | ||
1635 | if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { | |
1636 | icount = &edge_port->icount; | |
1637 | ||
1638 | /* update input line counters */ | |
1639 | if (msr & EDGEPORT_MSR_DELTA_CTS) | |
1640 | icount->cts++; | |
1641 | if (msr & EDGEPORT_MSR_DELTA_DSR) | |
1642 | icount->dsr++; | |
1643 | if (msr & EDGEPORT_MSR_DELTA_CD) | |
1644 | icount->dcd++; | |
1645 | if (msr & EDGEPORT_MSR_DELTA_RI) | |
1646 | icount->rng++; | |
1647 | wake_up_interruptible (&edge_port->delta_msr_wait); | |
1648 | } | |
1649 | ||
1650 | /* Save the new modem status */ | |
1651 | edge_port->shadow_msr = msr & 0xf0; | |
1652 | ||
1653 | tty = edge_port->port->tty; | |
1654 | /* handle CTS flow control */ | |
1655 | if (tty && C_CRTSCTS(tty)) { | |
1656 | if (msr & EDGEPORT_MSR_CTS) { | |
1657 | tty->hw_stopped = 0; | |
1658 | tty_wakeup(tty); | |
1659 | } else { | |
1660 | tty->hw_stopped = 1; | |
1661 | } | |
1662 | } | |
1663 | ||
1664 | return; | |
1665 | } | |
1666 | ||
1667 | static void handle_new_lsr (struct edgeport_port *edge_port, int lsr_data, __u8 lsr, __u8 data) | |
1668 | { | |
1669 | struct async_icount *icount; | |
1670 | __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK)); | |
1671 | ||
1672 | dbg ("%s - %02x", __FUNCTION__, new_lsr); | |
1673 | ||
1674 | edge_port->shadow_lsr = lsr; | |
1675 | ||
1676 | if (new_lsr & LSR_BREAK) { | |
1677 | /* | |
1678 | * Parity and Framing errors only count if they | |
1679 | * occur exclusive of a break being received. | |
1680 | */ | |
1681 | new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK); | |
1682 | } | |
1683 | ||
1684 | /* Place LSR data byte into Rx buffer */ | |
1685 | if (lsr_data && edge_port->port->tty) | |
1686 | edge_tty_recv(&edge_port->port->dev, edge_port->port->tty, &data, 1); | |
1687 | ||
1688 | /* update input line counters */ | |
1689 | icount = &edge_port->icount; | |
1690 | if (new_lsr & LSR_BREAK) | |
1691 | icount->brk++; | |
1692 | if (new_lsr & LSR_OVER_ERR) | |
1693 | icount->overrun++; | |
1694 | if (new_lsr & LSR_PAR_ERR) | |
1695 | icount->parity++; | |
1696 | if (new_lsr & LSR_FRM_ERR) | |
1697 | icount->frame++; | |
1698 | } | |
1699 | ||
1700 | ||
1701 | static void edge_interrupt_callback (struct urb *urb, struct pt_regs *regs) | |
1702 | { | |
1703 | struct edgeport_serial *edge_serial = (struct edgeport_serial *)urb->context; | |
1704 | struct usb_serial_port *port; | |
1705 | struct edgeport_port *edge_port; | |
1706 | unsigned char *data = urb->transfer_buffer; | |
1707 | int length = urb->actual_length; | |
1708 | int port_number; | |
1709 | int function; | |
1710 | int status; | |
1711 | __u8 lsr; | |
1712 | __u8 msr; | |
1713 | ||
1714 | dbg("%s", __FUNCTION__); | |
1715 | ||
1716 | switch (urb->status) { | |
1717 | case 0: | |
1718 | /* success */ | |
1719 | break; | |
1720 | case -ECONNRESET: | |
1721 | case -ENOENT: | |
1722 | case -ESHUTDOWN: | |
1723 | /* this urb is terminated, clean up */ | |
1724 | dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status); | |
1725 | return; | |
1726 | default: | |
1727 | dev_err(&urb->dev->dev, "%s - nonzero urb status received: %d\n", __FUNCTION__, urb->status); | |
1728 | goto exit; | |
1729 | } | |
1730 | ||
1731 | if (!length) { | |
1732 | dbg ("%s - no data in urb", __FUNCTION__); | |
1733 | goto exit; | |
1734 | } | |
1735 | ||
1736 | usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, __FUNCTION__, length, data); | |
1737 | ||
1738 | if (length != 2) { | |
1739 | dbg ("%s - expecting packet of size 2, got %d", __FUNCTION__, length); | |
1740 | goto exit; | |
1741 | } | |
1742 | ||
1743 | port_number = TIUMP_GET_PORT_FROM_CODE (data[0]); | |
1744 | function = TIUMP_GET_FUNC_FROM_CODE (data[0]); | |
1745 | dbg ("%s - port_number %d, function %d, info 0x%x", | |
1746 | __FUNCTION__, port_number, function, data[1]); | |
1747 | port = edge_serial->serial->port[port_number]; | |
1748 | edge_port = usb_get_serial_port_data(port); | |
1749 | if (!edge_port) { | |
1750 | dbg ("%s - edge_port not found", __FUNCTION__); | |
1751 | return; | |
1752 | } | |
1753 | switch (function) { | |
1754 | case TIUMP_INTERRUPT_CODE_LSR: | |
1755 | lsr = MapLineStatus(data[1]); | |
1756 | if (lsr & UMP_UART_LSR_DATA_MASK) { | |
1757 | /* Save the LSR event for bulk read completion routine */ | |
1758 | dbg ("%s - LSR Event Port %u LSR Status = %02x", | |
1759 | __FUNCTION__, port_number, lsr); | |
1760 | edge_port->lsr_event = 1; | |
1761 | edge_port->lsr_mask = lsr; | |
1762 | } else { | |
1763 | dbg ("%s - ===== Port %d LSR Status = %02x ======", | |
1764 | __FUNCTION__, port_number, lsr); | |
1765 | handle_new_lsr (edge_port, 0, lsr, 0); | |
1766 | } | |
1767 | break; | |
1768 | ||
1769 | case TIUMP_INTERRUPT_CODE_MSR: // MSR | |
1770 | /* Copy MSR from UMP */ | |
1771 | msr = data[1]; | |
1772 | dbg ("%s - ===== Port %u MSR Status = %02x ======\n", | |
1773 | __FUNCTION__, port_number, msr); | |
1774 | handle_new_msr (edge_port, msr); | |
1775 | break; | |
1776 | ||
1777 | default: | |
1778 | dev_err (&urb->dev->dev, "%s - Unknown Interrupt code from UMP %x\n", | |
1779 | __FUNCTION__, data[1]); | |
1780 | break; | |
1781 | ||
1782 | } | |
1783 | ||
1784 | exit: | |
1785 | status = usb_submit_urb (urb, GFP_ATOMIC); | |
1786 | if (status) | |
1787 | dev_err (&urb->dev->dev, "%s - usb_submit_urb failed with result %d\n", | |
1788 | __FUNCTION__, status); | |
1789 | } | |
1790 | ||
1791 | static void edge_bulk_in_callback (struct urb *urb, struct pt_regs *regs) | |
1792 | { | |
1793 | struct edgeport_port *edge_port = (struct edgeport_port *)urb->context; | |
1794 | unsigned char *data = urb->transfer_buffer; | |
1795 | struct tty_struct *tty; | |
1796 | int status = 0; | |
1797 | int port_number; | |
1798 | ||
1799 | dbg("%s", __FUNCTION__); | |
1800 | ||
1801 | switch (urb->status) { | |
1802 | case 0: | |
1803 | /* success */ | |
1804 | break; | |
1805 | case -ECONNRESET: | |
1806 | case -ENOENT: | |
1807 | case -ESHUTDOWN: | |
1808 | /* this urb is terminated, clean up */ | |
1809 | dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status); | |
1810 | return; | |
1811 | default: | |
1812 | dev_err (&urb->dev->dev,"%s - nonzero read bulk status received: %d\n", | |
1813 | __FUNCTION__, urb->status ); | |
1814 | } | |
1815 | ||
1816 | if (urb->status == -EPIPE) | |
1817 | goto exit; | |
1818 | ||
1819 | if (urb->status) { | |
1820 | dev_err(&urb->dev->dev,"%s - stopping read!\n", __FUNCTION__); | |
1821 | return; | |
1822 | } | |
1823 | ||
1824 | port_number = edge_port->port->number - edge_port->port->serial->minor; | |
1825 | ||
1826 | if (edge_port->lsr_event) { | |
1827 | edge_port->lsr_event = 0; | |
1828 | dbg ("%s ===== Port %u LSR Status = %02x, Data = %02x ======", | |
1829 | __FUNCTION__, port_number, edge_port->lsr_mask, *data); | |
1830 | handle_new_lsr (edge_port, 1, edge_port->lsr_mask, *data); | |
1831 | /* Adjust buffer length/pointer */ | |
1832 | --urb->actual_length; | |
1833 | ++data; | |
1834 | } | |
1835 | ||
1836 | tty = edge_port->port->tty; | |
1837 | if (tty && urb->actual_length) { | |
1838 | usb_serial_debug_data(debug, &edge_port->port->dev, __FUNCTION__, urb->actual_length, data); | |
1839 | ||
1840 | if (edge_port->close_pending) { | |
1841 | dbg ("%s - close is pending, dropping data on the floor.", __FUNCTION__); | |
1842 | } else { | |
1843 | edge_tty_recv(&edge_port->port->dev, tty, data, urb->actual_length); | |
1844 | } | |
1845 | edge_port->icount.rx += urb->actual_length; | |
1846 | } | |
1847 | ||
1848 | exit: | |
1849 | /* continue read unless stopped */ | |
1850 | spin_lock(&edge_port->ep_lock); | |
1851 | if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) { | |
1852 | urb->dev = edge_port->port->serial->dev; | |
1853 | status = usb_submit_urb(urb, GFP_ATOMIC); | |
1854 | } else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING) { | |
1855 | edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED; | |
1856 | } | |
1857 | spin_unlock(&edge_port->ep_lock); | |
1858 | if (status) | |
1859 | dev_err (&urb->dev->dev, "%s - usb_submit_urb failed with result %d\n", | |
1860 | __FUNCTION__, status); | |
1861 | } | |
1862 | ||
1863 | static void edge_tty_recv(struct device *dev, struct tty_struct *tty, unsigned char *data, int length) | |
1864 | { | |
1865 | int cnt; | |
1866 | ||
1867 | do { | |
33f0f88f AC |
1868 | cnt = tty_buffer_request_room(tty, length); |
1869 | if (cnt < length) { | |
1870 | dev_err(dev, "%s - dropping data, %d bytes lost\n", | |
1871 | __FUNCTION__, length - cnt); | |
1872 | if(cnt == 0) | |
1873 | break; | |
1da177e4 | 1874 | } |
33f0f88f | 1875 | tty_insert_flip_string(tty, data, cnt); |
1da177e4 LT |
1876 | data += cnt; |
1877 | length -= cnt; | |
1878 | } while (length > 0); | |
1879 | ||
1880 | tty_flip_buffer_push(tty); | |
1881 | } | |
1882 | ||
1883 | static void edge_bulk_out_callback (struct urb *urb, struct pt_regs *regs) | |
1884 | { | |
1885 | struct usb_serial_port *port = (struct usb_serial_port *)urb->context; | |
1886 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1887 | ||
1888 | dbg ("%s - port %d", __FUNCTION__, port->number); | |
1889 | ||
1890 | edge_port->ep_write_urb_in_use = 0; | |
1891 | ||
1892 | switch (urb->status) { | |
1893 | case 0: | |
1894 | /* success */ | |
1895 | break; | |
1896 | case -ECONNRESET: | |
1897 | case -ENOENT: | |
1898 | case -ESHUTDOWN: | |
1899 | /* this urb is terminated, clean up */ | |
1900 | dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status); | |
1901 | return; | |
1902 | default: | |
1903 | dev_err (&urb->dev->dev,"%s - nonzero write bulk status received: %d\n", | |
1904 | __FUNCTION__, urb->status); | |
1905 | } | |
1906 | ||
1907 | /* send any buffered data */ | |
1908 | edge_send(port); | |
1909 | } | |
1910 | ||
1911 | static int edge_open (struct usb_serial_port *port, struct file * filp) | |
1912 | { | |
1913 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1914 | struct edgeport_serial *edge_serial; | |
1915 | struct usb_device *dev; | |
1916 | struct urb *urb; | |
1917 | int port_number; | |
1918 | int status; | |
1919 | u16 open_settings; | |
1920 | u8 transaction_timeout; | |
1921 | ||
1922 | dbg("%s - port %d", __FUNCTION__, port->number); | |
1923 | ||
1924 | if (edge_port == NULL) | |
1925 | return -ENODEV; | |
1926 | ||
1927 | if (port->tty) | |
1928 | port->tty->low_latency = low_latency; | |
1929 | ||
1930 | port_number = port->number - port->serial->minor; | |
1931 | switch (port_number) { | |
1932 | case 0: | |
1933 | edge_port->uart_base = UMPMEM_BASE_UART1; | |
1934 | edge_port->dma_address = UMPD_OEDB1_ADDRESS; | |
1935 | break; | |
1936 | case 1: | |
1937 | edge_port->uart_base = UMPMEM_BASE_UART2; | |
1938 | edge_port->dma_address = UMPD_OEDB2_ADDRESS; | |
1939 | break; | |
1940 | default: | |
1941 | dev_err (&port->dev, "Unknown port number!!!\n"); | |
1942 | return -ENODEV; | |
1943 | } | |
1944 | ||
1945 | dbg ("%s - port_number = %d, uart_base = %04x, dma_address = %04x", | |
1946 | __FUNCTION__, port_number, edge_port->uart_base, edge_port->dma_address); | |
1947 | ||
1948 | dev = port->serial->dev; | |
1949 | ||
1950 | memset (&(edge_port->icount), 0x00, sizeof(edge_port->icount)); | |
1951 | init_waitqueue_head (&edge_port->delta_msr_wait); | |
1952 | ||
1953 | /* turn off loopback */ | |
1954 | status = TIClearLoopBack (edge_port); | |
1955 | if (status) { | |
1956 | dev_err(&port->dev,"%s - cannot send clear loopback command, %d\n", | |
1957 | __FUNCTION__, status); | |
1958 | return status; | |
1959 | } | |
1960 | ||
1961 | /* set up the port settings */ | |
1962 | edge_set_termios (port, NULL); | |
1963 | ||
1964 | /* open up the port */ | |
1965 | ||
1966 | /* milliseconds to timeout for DMA transfer */ | |
1967 | transaction_timeout = 2; | |
1968 | ||
1969 | edge_port->ump_read_timeout = max (20, ((transaction_timeout * 3) / 2) ); | |
1970 | ||
1971 | // milliseconds to timeout for DMA transfer | |
1972 | open_settings = (u8)(UMP_DMA_MODE_CONTINOUS | | |
1973 | UMP_PIPE_TRANS_TIMEOUT_ENA | | |
1974 | (transaction_timeout << 2)); | |
1975 | ||
1976 | dbg ("%s - Sending UMPC_OPEN_PORT", __FUNCTION__); | |
1977 | ||
1978 | /* Tell TI to open and start the port */ | |
1979 | status = TIWriteCommandSync (dev, | |
1980 | UMPC_OPEN_PORT, | |
1981 | (u8)(UMPM_UART1_PORT + port_number), | |
1982 | open_settings, | |
1983 | NULL, | |
1984 | 0); | |
1985 | if (status) { | |
1986 | dev_err(&port->dev,"%s - cannot send open command, %d\n", __FUNCTION__, status); | |
1987 | return status; | |
1988 | } | |
1989 | ||
1990 | /* Start the DMA? */ | |
1991 | status = TIWriteCommandSync (dev, | |
1992 | UMPC_START_PORT, | |
1993 | (u8)(UMPM_UART1_PORT + port_number), | |
1994 | 0, | |
1995 | NULL, | |
1996 | 0); | |
1997 | if (status) { | |
1998 | dev_err(&port->dev,"%s - cannot send start DMA command, %d\n", __FUNCTION__, status); | |
1999 | return status; | |
2000 | } | |
2001 | ||
2002 | /* Clear TX and RX buffers in UMP */ | |
2003 | status = TIPurgeDataSync (port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN); | |
2004 | if (status) { | |
2005 | dev_err(&port->dev,"%s - cannot send clear buffers command, %d\n", __FUNCTION__, status); | |
2006 | return status; | |
2007 | } | |
2008 | ||
2009 | /* Read Initial MSR */ | |
2010 | status = TIReadVendorRequestSync (dev, | |
2011 | UMPC_READ_MSR, // Request | |
2012 | 0, // wValue | |
2013 | (__u16)(UMPM_UART1_PORT + port_number), // wIndex (Address) | |
2014 | &edge_port->shadow_msr, // TransferBuffer | |
2015 | 1); // TransferBufferLength | |
2016 | if (status) { | |
2017 | dev_err(&port->dev,"%s - cannot send read MSR command, %d\n", __FUNCTION__, status); | |
2018 | return status; | |
2019 | } | |
2020 | ||
2021 | dbg ("ShadowMSR 0x%X", edge_port->shadow_msr); | |
2022 | ||
2023 | /* Set Initial MCR */ | |
2024 | edge_port->shadow_mcr = MCR_RTS | MCR_DTR; | |
2025 | dbg ("ShadowMCR 0x%X", edge_port->shadow_mcr); | |
2026 | ||
2027 | edge_serial = edge_port->edge_serial; | |
2028 | if (down_interruptible(&edge_serial->es_sem)) | |
2029 | return -ERESTARTSYS; | |
2030 | if (edge_serial->num_ports_open == 0) { | |
2031 | /* we are the first port to be opened, let's post the interrupt urb */ | |
2032 | urb = edge_serial->serial->port[0]->interrupt_in_urb; | |
2033 | if (!urb) { | |
2034 | dev_err (&port->dev, "%s - no interrupt urb present, exiting\n", __FUNCTION__); | |
2035 | status = -EINVAL; | |
2036 | goto up_es_sem; | |
2037 | } | |
2038 | urb->complete = edge_interrupt_callback; | |
2039 | urb->context = edge_serial; | |
2040 | urb->dev = dev; | |
2041 | status = usb_submit_urb (urb, GFP_KERNEL); | |
2042 | if (status) { | |
2043 | dev_err (&port->dev, "%s - usb_submit_urb failed with value %d\n", __FUNCTION__, status); | |
2044 | goto up_es_sem; | |
2045 | } | |
2046 | } | |
2047 | ||
2048 | /* | |
2049 | * reset the data toggle on the bulk endpoints to work around bug in | |
2050 | * host controllers where things get out of sync some times | |
2051 | */ | |
2052 | usb_clear_halt (dev, port->write_urb->pipe); | |
2053 | usb_clear_halt (dev, port->read_urb->pipe); | |
2054 | ||
2055 | /* start up our bulk read urb */ | |
2056 | urb = port->read_urb; | |
2057 | if (!urb) { | |
2058 | dev_err (&port->dev, "%s - no read urb present, exiting\n", __FUNCTION__); | |
2059 | status = -EINVAL; | |
2060 | goto unlink_int_urb; | |
2061 | } | |
2062 | edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; | |
2063 | urb->complete = edge_bulk_in_callback; | |
2064 | urb->context = edge_port; | |
2065 | urb->dev = dev; | |
2066 | status = usb_submit_urb (urb, GFP_KERNEL); | |
2067 | if (status) { | |
2068 | dev_err (&port->dev, "%s - read bulk usb_submit_urb failed with value %d\n", __FUNCTION__, status); | |
2069 | goto unlink_int_urb; | |
2070 | } | |
2071 | ||
2072 | ++edge_serial->num_ports_open; | |
2073 | ||
2074 | dbg("%s - exited", __FUNCTION__); | |
2075 | ||
2076 | goto up_es_sem; | |
2077 | ||
2078 | unlink_int_urb: | |
2079 | if (edge_port->edge_serial->num_ports_open == 0) | |
2080 | usb_kill_urb(port->serial->port[0]->interrupt_in_urb); | |
2081 | up_es_sem: | |
2082 | up(&edge_serial->es_sem); | |
2083 | return status; | |
2084 | } | |
2085 | ||
2086 | static void edge_close (struct usb_serial_port *port, struct file *filp) | |
2087 | { | |
2088 | struct edgeport_serial *edge_serial; | |
2089 | struct edgeport_port *edge_port; | |
2090 | int port_number; | |
2091 | int status; | |
2092 | ||
2093 | dbg("%s - port %d", __FUNCTION__, port->number); | |
2094 | ||
2095 | edge_serial = usb_get_serial_data(port->serial); | |
2096 | edge_port = usb_get_serial_port_data(port); | |
2097 | if ((edge_serial == NULL) || (edge_port == NULL)) | |
2098 | return; | |
2099 | ||
2100 | /* The bulkreadcompletion routine will check | |
2101 | * this flag and dump add read data */ | |
2102 | edge_port->close_pending = 1; | |
2103 | ||
2104 | /* chase the port close and flush */ | |
2105 | TIChasePort (edge_port, (HZ*closing_wait)/100, 1); | |
2106 | ||
2107 | usb_kill_urb(port->read_urb); | |
2108 | usb_kill_urb(port->write_urb); | |
2109 | edge_port->ep_write_urb_in_use = 0; | |
2110 | ||
2111 | /* assuming we can still talk to the device, | |
2112 | * send a close port command to it */ | |
2113 | dbg("%s - send umpc_close_port", __FUNCTION__); | |
2114 | port_number = port->number - port->serial->minor; | |
2115 | status = TIWriteCommandSync (port->serial->dev, | |
2116 | UMPC_CLOSE_PORT, | |
2117 | (__u8)(UMPM_UART1_PORT + port_number), | |
2118 | 0, | |
2119 | NULL, | |
2120 | 0); | |
2121 | down(&edge_serial->es_sem); | |
2122 | --edge_port->edge_serial->num_ports_open; | |
2123 | if (edge_port->edge_serial->num_ports_open <= 0) { | |
2124 | /* last port is now closed, let's shut down our interrupt urb */ | |
2125 | usb_kill_urb(port->serial->port[0]->interrupt_in_urb); | |
2126 | edge_port->edge_serial->num_ports_open = 0; | |
2127 | } | |
2128 | up(&edge_serial->es_sem); | |
2129 | edge_port->close_pending = 0; | |
2130 | ||
2131 | dbg("%s - exited", __FUNCTION__); | |
2132 | } | |
2133 | ||
2134 | static int edge_write (struct usb_serial_port *port, const unsigned char *data, int count) | |
2135 | { | |
2136 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
2137 | unsigned long flags; | |
2138 | ||
2139 | dbg("%s - port %d", __FUNCTION__, port->number); | |
2140 | ||
2141 | if (count == 0) { | |
2142 | dbg("%s - write request of 0 bytes", __FUNCTION__); | |
2143 | return 0; | |
2144 | } | |
2145 | ||
2146 | if (edge_port == NULL) | |
2147 | return -ENODEV; | |
2148 | if (edge_port->close_pending == 1) | |
2149 | return -ENODEV; | |
2150 | ||
2151 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
2152 | count = edge_buf_put(edge_port->ep_out_buf, data, count); | |
2153 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
2154 | ||
2155 | edge_send(port); | |
2156 | ||
2157 | return count; | |
2158 | } | |
2159 | ||
2160 | static void edge_send(struct usb_serial_port *port) | |
2161 | { | |
2162 | int count, result; | |
2163 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
2164 | struct tty_struct *tty = port->tty; | |
2165 | unsigned long flags; | |
2166 | ||
2167 | ||
2168 | dbg("%s - port %d", __FUNCTION__, port->number); | |
2169 | ||
2170 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
2171 | ||
2172 | if (edge_port->ep_write_urb_in_use) { | |
2173 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
2174 | return; | |
2175 | } | |
2176 | ||
2177 | count = edge_buf_get(edge_port->ep_out_buf, | |
2178 | port->write_urb->transfer_buffer, | |
2179 | port->bulk_out_size); | |
2180 | ||
2181 | if (count == 0) { | |
2182 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
2183 | return; | |
2184 | } | |
2185 | ||
2186 | edge_port->ep_write_urb_in_use = 1; | |
2187 | ||
2188 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
2189 | ||
2190 | usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, port->write_urb->transfer_buffer); | |
2191 | ||
2192 | /* set up our urb */ | |
2193 | usb_fill_bulk_urb (port->write_urb, port->serial->dev, | |
2194 | usb_sndbulkpipe (port->serial->dev, | |
2195 | port->bulk_out_endpointAddress), | |
2196 | port->write_urb->transfer_buffer, count, | |
2197 | edge_bulk_out_callback, | |
2198 | port); | |
2199 | ||
2200 | /* send the data out the bulk port */ | |
2201 | result = usb_submit_urb(port->write_urb, GFP_ATOMIC); | |
2202 | if (result) { | |
2203 | dev_err(&port->dev, "%s - failed submitting write urb, error %d\n", __FUNCTION__, result); | |
2204 | edge_port->ep_write_urb_in_use = 0; | |
2205 | // TODO: reschedule edge_send | |
2206 | } else { | |
2207 | edge_port->icount.tx += count; | |
2208 | } | |
2209 | ||
2210 | /* wakeup any process waiting for writes to complete */ | |
2211 | /* there is now more room in the buffer for new writes */ | |
2212 | if (tty) { | |
2213 | /* let the tty driver wakeup if it has a special write_wakeup function */ | |
2214 | tty_wakeup(tty); | |
2215 | } | |
2216 | } | |
2217 | ||
2218 | static int edge_write_room (struct usb_serial_port *port) | |
2219 | { | |
2220 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
2221 | int room = 0; | |
2222 | unsigned long flags; | |
2223 | ||
2224 | dbg("%s - port %d", __FUNCTION__, port->number); | |
2225 | ||
2226 | if (edge_port == NULL) | |
2227 | return -ENODEV; | |
2228 | if (edge_port->close_pending == 1) | |
2229 | return -ENODEV; | |
2230 | ||
2231 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
2232 | room = edge_buf_space_avail(edge_port->ep_out_buf); | |
2233 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
2234 | ||
2235 | dbg("%s - returns %d", __FUNCTION__, room); | |
2236 | return room; | |
2237 | } | |
2238 | ||
2239 | static int edge_chars_in_buffer (struct usb_serial_port *port) | |
2240 | { | |
2241 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
2242 | int chars = 0; | |
2243 | unsigned long flags; | |
2244 | ||
2245 | dbg("%s - port %d", __FUNCTION__, port->number); | |
2246 | ||
2247 | if (edge_port == NULL) | |
2248 | return -ENODEV; | |
2249 | if (edge_port->close_pending == 1) | |
2250 | return -ENODEV; | |
2251 | ||
2252 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
2253 | chars = edge_buf_data_avail(edge_port->ep_out_buf); | |
2254 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
2255 | ||
2256 | dbg ("%s - returns %d", __FUNCTION__, chars); | |
2257 | return chars; | |
2258 | } | |
2259 | ||
2260 | static void edge_throttle (struct usb_serial_port *port) | |
2261 | { | |
2262 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
2263 | struct tty_struct *tty; | |
2264 | int status; | |
2265 | ||
2266 | dbg("%s - port %d", __FUNCTION__, port->number); | |
2267 | ||
2268 | if (edge_port == NULL) | |
2269 | return; | |
2270 | ||
2271 | tty = port->tty; | |
2272 | if (!tty) { | |
2273 | dbg ("%s - no tty available", __FUNCTION__); | |
2274 | return; | |
2275 | } | |
2276 | ||
2277 | /* if we are implementing XON/XOFF, send the stop character */ | |
2278 | if (I_IXOFF(tty)) { | |
2279 | unsigned char stop_char = STOP_CHAR(tty); | |
2280 | status = edge_write (port, &stop_char, 1); | |
2281 | if (status <= 0) { | |
2282 | dev_err(&port->dev, "%s - failed to write stop character, %d\n", __FUNCTION__, status); | |
2283 | } | |
2284 | } | |
2285 | ||
2286 | /* if we are implementing RTS/CTS, stop reads */ | |
2287 | /* and the Edgeport will clear the RTS line */ | |
2288 | if (C_CRTSCTS(tty)) | |
2289 | stop_read(edge_port); | |
2290 | ||
2291 | } | |
2292 | ||
2293 | static void edge_unthrottle (struct usb_serial_port *port) | |
2294 | { | |
2295 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
2296 | struct tty_struct *tty; | |
2297 | int status; | |
2298 | ||
2299 | dbg("%s - port %d", __FUNCTION__, port->number); | |
2300 | ||
2301 | if (edge_port == NULL) | |
2302 | return; | |
2303 | ||
2304 | tty = port->tty; | |
2305 | if (!tty) { | |
2306 | dbg ("%s - no tty available", __FUNCTION__); | |
2307 | return; | |
2308 | } | |
2309 | ||
2310 | /* if we are implementing XON/XOFF, send the start character */ | |
2311 | if (I_IXOFF(tty)) { | |
2312 | unsigned char start_char = START_CHAR(tty); | |
2313 | status = edge_write (port, &start_char, 1); | |
2314 | if (status <= 0) { | |
2315 | dev_err(&port->dev, "%s - failed to write start character, %d\n", __FUNCTION__, status); | |
2316 | } | |
2317 | } | |
2318 | ||
2319 | /* if we are implementing RTS/CTS, restart reads */ | |
2320 | /* are the Edgeport will assert the RTS line */ | |
2321 | if (C_CRTSCTS(tty)) { | |
2322 | status = restart_read(edge_port); | |
2323 | if (status) | |
2324 | dev_err(&port->dev, "%s - read bulk usb_submit_urb failed with value %d\n", __FUNCTION__, status); | |
2325 | } | |
2326 | ||
2327 | } | |
2328 | ||
2329 | static void stop_read(struct edgeport_port *edge_port) | |
2330 | { | |
2331 | unsigned long flags; | |
2332 | ||
2333 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
2334 | ||
2335 | if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) | |
2336 | edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING; | |
2337 | edge_port->shadow_mcr &= ~MCR_RTS; | |
2338 | ||
2339 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
2340 | } | |
2341 | ||
2342 | static int restart_read(struct edgeport_port *edge_port) | |
2343 | { | |
2344 | struct urb *urb; | |
2345 | int status = 0; | |
2346 | unsigned long flags; | |
2347 | ||
2348 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
2349 | ||
2350 | if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) { | |
2351 | urb = edge_port->port->read_urb; | |
2352 | urb->complete = edge_bulk_in_callback; | |
2353 | urb->context = edge_port; | |
2354 | urb->dev = edge_port->port->serial->dev; | |
2355 | status = usb_submit_urb(urb, GFP_KERNEL); | |
2356 | } | |
2357 | edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; | |
2358 | edge_port->shadow_mcr |= MCR_RTS; | |
2359 | ||
2360 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
2361 | ||
2362 | return status; | |
2363 | } | |
2364 | ||
2365 | static void change_port_settings (struct edgeport_port *edge_port, struct termios *old_termios) | |
2366 | { | |
2367 | struct ump_uart_config *config; | |
2368 | struct tty_struct *tty; | |
2369 | int baud; | |
2370 | unsigned cflag; | |
2371 | int status; | |
2372 | int port_number = edge_port->port->number - edge_port->port->serial->minor; | |
2373 | ||
2374 | dbg("%s - port %d", __FUNCTION__, edge_port->port->number); | |
2375 | ||
2376 | tty = edge_port->port->tty; | |
2377 | if ((!tty) || | |
2378 | (!tty->termios)) { | |
2379 | dbg("%s - no tty structures", __FUNCTION__); | |
2380 | return; | |
2381 | } | |
2382 | ||
2383 | config = kmalloc (sizeof (*config), GFP_KERNEL); | |
2384 | if (!config) { | |
2385 | dev_err (&edge_port->port->dev, "%s - out of memory\n", __FUNCTION__); | |
2386 | return; | |
2387 | } | |
2388 | ||
2389 | cflag = tty->termios->c_cflag; | |
2390 | ||
2391 | config->wFlags = 0; | |
2392 | ||
2393 | /* These flags must be set */ | |
2394 | config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT; | |
2395 | config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR; | |
2396 | config->bUartMode = (__u8)(edge_port->bUartMode); | |
2397 | ||
2398 | switch (cflag & CSIZE) { | |
2399 | case CS5: | |
2400 | config->bDataBits = UMP_UART_CHAR5BITS; | |
2401 | dbg ("%s - data bits = 5", __FUNCTION__); | |
2402 | break; | |
2403 | case CS6: | |
2404 | config->bDataBits = UMP_UART_CHAR6BITS; | |
2405 | dbg ("%s - data bits = 6", __FUNCTION__); | |
2406 | break; | |
2407 | case CS7: | |
2408 | config->bDataBits = UMP_UART_CHAR7BITS; | |
2409 | dbg ("%s - data bits = 7", __FUNCTION__); | |
2410 | break; | |
2411 | default: | |
2412 | case CS8: | |
2413 | config->bDataBits = UMP_UART_CHAR8BITS; | |
2414 | dbg ("%s - data bits = 8", __FUNCTION__); | |
2415 | break; | |
2416 | } | |
2417 | ||
2418 | if (cflag & PARENB) { | |
2419 | if (cflag & PARODD) { | |
2420 | config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; | |
2421 | config->bParity = UMP_UART_ODDPARITY; | |
2422 | dbg("%s - parity = odd", __FUNCTION__); | |
2423 | } else { | |
2424 | config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; | |
2425 | config->bParity = UMP_UART_EVENPARITY; | |
2426 | dbg("%s - parity = even", __FUNCTION__); | |
2427 | } | |
2428 | } else { | |
2429 | config->bParity = UMP_UART_NOPARITY; | |
2430 | dbg("%s - parity = none", __FUNCTION__); | |
2431 | } | |
2432 | ||
2433 | if (cflag & CSTOPB) { | |
2434 | config->bStopBits = UMP_UART_STOPBIT2; | |
2435 | dbg("%s - stop bits = 2", __FUNCTION__); | |
2436 | } else { | |
2437 | config->bStopBits = UMP_UART_STOPBIT1; | |
2438 | dbg("%s - stop bits = 1", __FUNCTION__); | |
2439 | } | |
2440 | ||
2441 | /* figure out the flow control settings */ | |
2442 | if (cflag & CRTSCTS) { | |
2443 | config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW; | |
2444 | config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW; | |
2445 | dbg("%s - RTS/CTS is enabled", __FUNCTION__); | |
2446 | } else { | |
2447 | dbg("%s - RTS/CTS is disabled", __FUNCTION__); | |
2448 | tty->hw_stopped = 0; | |
2449 | restart_read(edge_port); | |
2450 | } | |
2451 | ||
2452 | /* if we are implementing XON/XOFF, set the start and stop character in the device */ | |
2453 | if (I_IXOFF(tty) || I_IXON(tty)) { | |
2454 | config->cXon = START_CHAR(tty); | |
2455 | config->cXoff = STOP_CHAR(tty); | |
2456 | ||
2457 | /* if we are implementing INBOUND XON/XOFF */ | |
2458 | if (I_IXOFF(tty)) { | |
2459 | config->wFlags |= UMP_MASK_UART_FLAGS_IN_X; | |
2460 | dbg ("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", | |
2461 | __FUNCTION__, config->cXon, config->cXoff); | |
2462 | } else { | |
2463 | dbg ("%s - INBOUND XON/XOFF is disabled", __FUNCTION__); | |
2464 | } | |
2465 | ||
2466 | /* if we are implementing OUTBOUND XON/XOFF */ | |
2467 | if (I_IXON(tty)) { | |
2468 | config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X; | |
2469 | dbg ("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", | |
2470 | __FUNCTION__, config->cXon, config->cXoff); | |
2471 | } else { | |
2472 | dbg ("%s - OUTBOUND XON/XOFF is disabled", __FUNCTION__); | |
2473 | } | |
2474 | } | |
2475 | ||
2476 | /* Round the baud rate */ | |
2477 | baud = tty_get_baud_rate(tty); | |
2478 | if (!baud) { | |
2479 | /* pick a default, any default... */ | |
2480 | baud = 9600; | |
2481 | } | |
2482 | edge_port->baud_rate = baud; | |
2483 | config->wBaudRate = (__u16)((461550L + baud/2) / baud); | |
2484 | ||
2485 | dbg ("%s - baud rate = %d, wBaudRate = %d", __FUNCTION__, baud, config->wBaudRate); | |
2486 | ||
2487 | dbg ("wBaudRate: %d", (int)(461550L / config->wBaudRate)); | |
2488 | dbg ("wFlags: 0x%x", config->wFlags); | |
2489 | dbg ("bDataBits: %d", config->bDataBits); | |
2490 | dbg ("bParity: %d", config->bParity); | |
2491 | dbg ("bStopBits: %d", config->bStopBits); | |
2492 | dbg ("cXon: %d", config->cXon); | |
2493 | dbg ("cXoff: %d", config->cXoff); | |
2494 | dbg ("bUartMode: %d", config->bUartMode); | |
2495 | ||
2496 | /* move the word values into big endian mode */ | |
2497 | cpu_to_be16s (&config->wFlags); | |
2498 | cpu_to_be16s (&config->wBaudRate); | |
2499 | ||
2500 | status = TIWriteCommandSync (edge_port->port->serial->dev, | |
2501 | UMPC_SET_CONFIG, | |
2502 | (__u8)(UMPM_UART1_PORT + port_number), | |
2503 | 0, | |
2504 | (__u8 *)config, | |
2505 | sizeof(*config)); | |
2506 | if (status) { | |
2507 | dbg ("%s - error %d when trying to write config to device", | |
2508 | __FUNCTION__, status); | |
2509 | } | |
2510 | ||
2511 | kfree (config); | |
2512 | ||
2513 | return; | |
2514 | } | |
2515 | ||
2516 | static void edge_set_termios (struct usb_serial_port *port, struct termios *old_termios) | |
2517 | { | |
2518 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
2519 | struct tty_struct *tty = port->tty; | |
2520 | unsigned int cflag; | |
2521 | ||
2522 | if (!port->tty || !port->tty->termios) { | |
2523 | dbg ("%s - no tty or termios", __FUNCTION__); | |
2524 | return; | |
2525 | } | |
2526 | ||
2527 | cflag = tty->termios->c_cflag; | |
2528 | /* check that they really want us to change something */ | |
2529 | if (old_termios) { | |
2530 | if (cflag == old_termios->c_cflag && | |
2531 | tty->termios->c_iflag == old_termios->c_iflag) { | |
2532 | dbg ("%s - nothing to change", __FUNCTION__); | |
2533 | return; | |
2534 | } | |
2535 | } | |
2536 | ||
2537 | dbg("%s - clfag %08x iflag %08x", __FUNCTION__, | |
2538 | tty->termios->c_cflag, tty->termios->c_iflag); | |
2539 | if (old_termios) { | |
2540 | dbg("%s - old clfag %08x old iflag %08x", __FUNCTION__, | |
2541 | old_termios->c_cflag, old_termios->c_iflag); | |
2542 | } | |
2543 | ||
2544 | dbg("%s - port %d", __FUNCTION__, port->number); | |
2545 | ||
2546 | if (edge_port == NULL) | |
2547 | return; | |
2548 | ||
2549 | /* change the port settings to the new ones specified */ | |
2550 | change_port_settings (edge_port, old_termios); | |
2551 | ||
2552 | return; | |
2553 | } | |
2554 | ||
2555 | static int edge_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear) | |
2556 | { | |
2557 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
2558 | unsigned int mcr; | |
2559 | ||
2560 | dbg("%s - port %d", __FUNCTION__, port->number); | |
2561 | ||
2562 | mcr = edge_port->shadow_mcr; | |
2563 | if (set & TIOCM_RTS) | |
2564 | mcr |= MCR_RTS; | |
2565 | if (set & TIOCM_DTR) | |
2566 | mcr |= MCR_DTR; | |
2567 | if (set & TIOCM_LOOP) | |
2568 | mcr |= MCR_LOOPBACK; | |
2569 | ||
2570 | if (clear & TIOCM_RTS) | |
2571 | mcr &= ~MCR_RTS; | |
2572 | if (clear & TIOCM_DTR) | |
2573 | mcr &= ~MCR_DTR; | |
2574 | if (clear & TIOCM_LOOP) | |
2575 | mcr &= ~MCR_LOOPBACK; | |
2576 | ||
2577 | edge_port->shadow_mcr = mcr; | |
2578 | ||
2579 | TIRestoreMCR (edge_port, mcr); | |
2580 | ||
2581 | return 0; | |
2582 | } | |
2583 | ||
2584 | static int edge_tiocmget(struct usb_serial_port *port, struct file *file) | |
2585 | { | |
2586 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
2587 | unsigned int result = 0; | |
2588 | unsigned int msr; | |
2589 | unsigned int mcr; | |
2590 | ||
2591 | dbg("%s - port %d", __FUNCTION__, port->number); | |
2592 | ||
2593 | msr = edge_port->shadow_msr; | |
2594 | mcr = edge_port->shadow_mcr; | |
2595 | result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ | |
2596 | | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ | |
2597 | | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ | |
2598 | | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */ | |
2599 | | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ | |
2600 | | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ | |
2601 | ||
2602 | ||
2603 | dbg("%s -- %x", __FUNCTION__, result); | |
2604 | ||
2605 | return result; | |
2606 | } | |
2607 | ||
2608 | static int get_serial_info (struct edgeport_port *edge_port, struct serial_struct __user *retinfo) | |
2609 | { | |
2610 | struct serial_struct tmp; | |
2611 | ||
2612 | if (!retinfo) | |
2613 | return -EFAULT; | |
2614 | ||
2615 | memset(&tmp, 0, sizeof(tmp)); | |
2616 | ||
2617 | tmp.type = PORT_16550A; | |
2618 | tmp.line = edge_port->port->serial->minor; | |
2619 | tmp.port = edge_port->port->number; | |
2620 | tmp.irq = 0; | |
2621 | tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; | |
2622 | tmp.xmit_fifo_size = edge_port->port->bulk_out_size; | |
2623 | tmp.baud_base = 9600; | |
2624 | tmp.close_delay = 5*HZ; | |
2625 | tmp.closing_wait = closing_wait; | |
2626 | // tmp.custom_divisor = state->custom_divisor; | |
2627 | // tmp.hub6 = state->hub6; | |
2628 | // tmp.io_type = state->io_type; | |
2629 | ||
2630 | ||
2631 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) | |
2632 | return -EFAULT; | |
2633 | return 0; | |
2634 | } | |
2635 | ||
2636 | static int edge_ioctl (struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg) | |
2637 | { | |
2638 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
2639 | struct async_icount cnow; | |
2640 | struct async_icount cprev; | |
2641 | ||
2642 | dbg("%s - port %d, cmd = 0x%x", __FUNCTION__, port->number, cmd); | |
2643 | ||
2644 | switch (cmd) { | |
2645 | case TIOCINQ: | |
2646 | dbg("%s - (%d) TIOCINQ", __FUNCTION__, port->number); | |
2647 | // return get_number_bytes_avail(edge_port, (unsigned int *) arg); | |
2648 | break; | |
2649 | ||
2650 | case TIOCSERGETLSR: | |
2651 | dbg("%s - (%d) TIOCSERGETLSR", __FUNCTION__, port->number); | |
2652 | // return get_lsr_info(edge_port, (unsigned int *) arg); | |
2653 | break; | |
2654 | ||
2655 | case TIOCGSERIAL: | |
2656 | dbg("%s - (%d) TIOCGSERIAL", __FUNCTION__, port->number); | |
2657 | return get_serial_info(edge_port, (struct serial_struct __user *) arg); | |
2658 | break; | |
2659 | ||
2660 | case TIOCSSERIAL: | |
2661 | dbg("%s - (%d) TIOCSSERIAL", __FUNCTION__, port->number); | |
2662 | break; | |
2663 | ||
2664 | case TIOCMIWAIT: | |
2665 | dbg("%s - (%d) TIOCMIWAIT", __FUNCTION__, port->number); | |
2666 | cprev = edge_port->icount; | |
2667 | while (1) { | |
2668 | interruptible_sleep_on(&edge_port->delta_msr_wait); | |
2669 | /* see if a signal did it */ | |
2670 | if (signal_pending(current)) | |
2671 | return -ERESTARTSYS; | |
2672 | cnow = edge_port->icount; | |
2673 | if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && | |
2674 | cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) | |
2675 | return -EIO; /* no change => error */ | |
2676 | if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || | |
2677 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || | |
2678 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || | |
2679 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) { | |
2680 | return 0; | |
2681 | } | |
2682 | cprev = cnow; | |
2683 | } | |
2684 | /* not reached */ | |
2685 | break; | |
2686 | ||
2687 | case TIOCGICOUNT: | |
2688 | dbg ("%s - (%d) TIOCGICOUNT RX=%d, TX=%d", __FUNCTION__, | |
2689 | port->number, edge_port->icount.rx, edge_port->icount.tx); | |
2690 | if (copy_to_user((void __user *)arg, &edge_port->icount, sizeof(edge_port->icount))) | |
2691 | return -EFAULT; | |
2692 | return 0; | |
2693 | } | |
2694 | ||
2695 | return -ENOIOCTLCMD; | |
2696 | } | |
2697 | ||
2698 | static void edge_break (struct usb_serial_port *port, int break_state) | |
2699 | { | |
2700 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
2701 | int status; | |
2702 | ||
2703 | dbg ("%s - state = %d", __FUNCTION__, break_state); | |
2704 | ||
2705 | /* chase the port close */ | |
2706 | TIChasePort (edge_port, 0, 0); | |
2707 | ||
2708 | if (break_state == -1) { | |
2709 | status = TISetBreak (edge_port); | |
2710 | } else { | |
2711 | status = TIClearBreak (edge_port); | |
2712 | } | |
2713 | if (status) { | |
2714 | dbg ("%s - error %d sending break set/clear command.", | |
2715 | __FUNCTION__, status); | |
2716 | } | |
2717 | } | |
2718 | ||
2719 | static int edge_startup (struct usb_serial *serial) | |
2720 | { | |
2721 | struct edgeport_serial *edge_serial; | |
2722 | struct edgeport_port *edge_port; | |
2723 | struct usb_device *dev; | |
2724 | int status; | |
2725 | int i; | |
2726 | ||
2727 | dev = serial->dev; | |
2728 | ||
2729 | /* create our private serial structure */ | |
2730 | edge_serial = kmalloc (sizeof(struct edgeport_serial), GFP_KERNEL); | |
2731 | if (edge_serial == NULL) { | |
2732 | dev_err(&serial->dev->dev, "%s - Out of memory\n", __FUNCTION__); | |
2733 | return -ENOMEM; | |
2734 | } | |
2735 | memset (edge_serial, 0, sizeof(struct edgeport_serial)); | |
2736 | sema_init(&edge_serial->es_sem, 1); | |
2737 | edge_serial->serial = serial; | |
2738 | usb_set_serial_data(serial, edge_serial); | |
2739 | ||
2740 | status = TIDownloadFirmware (edge_serial); | |
2741 | if (status) { | |
2742 | kfree (edge_serial); | |
2743 | return status; | |
2744 | } | |
2745 | ||
2746 | /* set up our port private structures */ | |
2747 | for (i = 0; i < serial->num_ports; ++i) { | |
2748 | edge_port = kmalloc (sizeof(struct edgeport_port), GFP_KERNEL); | |
2749 | if (edge_port == NULL) { | |
2750 | dev_err(&serial->dev->dev, "%s - Out of memory\n", __FUNCTION__); | |
2751 | goto cleanup; | |
2752 | } | |
2753 | memset (edge_port, 0, sizeof(struct edgeport_port)); | |
2754 | spin_lock_init(&edge_port->ep_lock); | |
2755 | edge_port->ep_out_buf = edge_buf_alloc(EDGE_OUT_BUF_SIZE); | |
2756 | if (edge_port->ep_out_buf == NULL) { | |
2757 | dev_err(&serial->dev->dev, "%s - Out of memory\n", __FUNCTION__); | |
2758 | kfree(edge_port); | |
2759 | goto cleanup; | |
2760 | } | |
2761 | edge_port->port = serial->port[i]; | |
2762 | edge_port->edge_serial = edge_serial; | |
2763 | usb_set_serial_port_data(serial->port[i], edge_port); | |
2764 | edge_port->bUartMode = 0; /* Default is RS232 */ | |
2765 | } | |
2766 | ||
2767 | return 0; | |
2768 | ||
2769 | cleanup: | |
2770 | for (--i; i>=0; --i) { | |
2771 | edge_port = usb_get_serial_port_data(serial->port[i]); | |
2772 | edge_buf_free(edge_port->ep_out_buf); | |
2773 | kfree(edge_port); | |
2774 | usb_set_serial_port_data(serial->port[i], NULL); | |
2775 | } | |
2776 | kfree (edge_serial); | |
2777 | usb_set_serial_data(serial, NULL); | |
2778 | return -ENOMEM; | |
2779 | } | |
2780 | ||
2781 | static void edge_shutdown (struct usb_serial *serial) | |
2782 | { | |
2783 | int i; | |
2784 | struct edgeport_port *edge_port; | |
2785 | ||
2786 | dbg ("%s", __FUNCTION__); | |
2787 | ||
2788 | for (i=0; i < serial->num_ports; ++i) { | |
2789 | edge_port = usb_get_serial_port_data(serial->port[i]); | |
2790 | if (edge_port) { | |
2791 | edge_buf_free(edge_port->ep_out_buf); | |
2792 | kfree(edge_port); | |
2793 | } | |
2794 | usb_set_serial_port_data(serial->port[i], NULL); | |
2795 | } | |
2796 | kfree (usb_get_serial_data(serial)); | |
2797 | usb_set_serial_data(serial, NULL); | |
2798 | } | |
2799 | ||
2800 | ||
2801 | /* Circular Buffer */ | |
2802 | ||
2803 | /* | |
2804 | * edge_buf_alloc | |
2805 | * | |
2806 | * Allocate a circular buffer and all associated memory. | |
2807 | */ | |
2808 | ||
2809 | static struct edge_buf *edge_buf_alloc(unsigned int size) | |
2810 | { | |
2811 | struct edge_buf *eb; | |
2812 | ||
2813 | ||
2814 | if (size == 0) | |
2815 | return NULL; | |
2816 | ||
2817 | eb = (struct edge_buf *)kmalloc(sizeof(struct edge_buf), GFP_KERNEL); | |
2818 | if (eb == NULL) | |
2819 | return NULL; | |
2820 | ||
2821 | eb->buf_buf = kmalloc(size, GFP_KERNEL); | |
2822 | if (eb->buf_buf == NULL) { | |
2823 | kfree(eb); | |
2824 | return NULL; | |
2825 | } | |
2826 | ||
2827 | eb->buf_size = size; | |
2828 | eb->buf_get = eb->buf_put = eb->buf_buf; | |
2829 | ||
2830 | return eb; | |
2831 | } | |
2832 | ||
2833 | ||
2834 | /* | |
2835 | * edge_buf_free | |
2836 | * | |
2837 | * Free the buffer and all associated memory. | |
2838 | */ | |
2839 | ||
3d48586c | 2840 | static void edge_buf_free(struct edge_buf *eb) |
1da177e4 | 2841 | { |
1bc3c9e1 JJ |
2842 | if (eb) { |
2843 | kfree(eb->buf_buf); | |
1da177e4 LT |
2844 | kfree(eb); |
2845 | } | |
2846 | } | |
2847 | ||
2848 | ||
2849 | /* | |
2850 | * edge_buf_clear | |
2851 | * | |
2852 | * Clear out all data in the circular buffer. | |
2853 | */ | |
2854 | ||
2855 | static void edge_buf_clear(struct edge_buf *eb) | |
2856 | { | |
2857 | if (eb != NULL) | |
2858 | eb->buf_get = eb->buf_put; | |
2859 | /* equivalent to a get of all data available */ | |
2860 | } | |
2861 | ||
2862 | ||
2863 | /* | |
2864 | * edge_buf_data_avail | |
2865 | * | |
2866 | * Return the number of bytes of data available in the circular | |
2867 | * buffer. | |
2868 | */ | |
2869 | ||
2870 | static unsigned int edge_buf_data_avail(struct edge_buf *eb) | |
2871 | { | |
2872 | if (eb != NULL) | |
2873 | return ((eb->buf_size + eb->buf_put - eb->buf_get) % eb->buf_size); | |
2874 | else | |
2875 | return 0; | |
2876 | } | |
2877 | ||
2878 | ||
2879 | /* | |
2880 | * edge_buf_space_avail | |
2881 | * | |
2882 | * Return the number of bytes of space available in the circular | |
2883 | * buffer. | |
2884 | */ | |
2885 | ||
2886 | static unsigned int edge_buf_space_avail(struct edge_buf *eb) | |
2887 | { | |
2888 | if (eb != NULL) | |
2889 | return ((eb->buf_size + eb->buf_get - eb->buf_put - 1) % eb->buf_size); | |
2890 | else | |
2891 | return 0; | |
2892 | } | |
2893 | ||
2894 | ||
2895 | /* | |
2896 | * edge_buf_put | |
2897 | * | |
2898 | * Copy data data from a user buffer and put it into the circular buffer. | |
2899 | * Restrict to the amount of space available. | |
2900 | * | |
2901 | * Return the number of bytes copied. | |
2902 | */ | |
2903 | ||
2904 | static unsigned int edge_buf_put(struct edge_buf *eb, const char *buf, | |
2905 | unsigned int count) | |
2906 | { | |
2907 | unsigned int len; | |
2908 | ||
2909 | ||
2910 | if (eb == NULL) | |
2911 | return 0; | |
2912 | ||
2913 | len = edge_buf_space_avail(eb); | |
2914 | if (count > len) | |
2915 | count = len; | |
2916 | ||
2917 | if (count == 0) | |
2918 | return 0; | |
2919 | ||
2920 | len = eb->buf_buf + eb->buf_size - eb->buf_put; | |
2921 | if (count > len) { | |
2922 | memcpy(eb->buf_put, buf, len); | |
2923 | memcpy(eb->buf_buf, buf+len, count - len); | |
2924 | eb->buf_put = eb->buf_buf + count - len; | |
2925 | } else { | |
2926 | memcpy(eb->buf_put, buf, count); | |
2927 | if (count < len) | |
2928 | eb->buf_put += count; | |
2929 | else /* count == len */ | |
2930 | eb->buf_put = eb->buf_buf; | |
2931 | } | |
2932 | ||
2933 | return count; | |
2934 | } | |
2935 | ||
2936 | ||
2937 | /* | |
2938 | * edge_buf_get | |
2939 | * | |
2940 | * Get data from the circular buffer and copy to the given buffer. | |
2941 | * Restrict to the amount of data available. | |
2942 | * | |
2943 | * Return the number of bytes copied. | |
2944 | */ | |
2945 | ||
2946 | static unsigned int edge_buf_get(struct edge_buf *eb, char *buf, | |
2947 | unsigned int count) | |
2948 | { | |
2949 | unsigned int len; | |
2950 | ||
2951 | ||
2952 | if (eb == NULL) | |
2953 | return 0; | |
2954 | ||
2955 | len = edge_buf_data_avail(eb); | |
2956 | if (count > len) | |
2957 | count = len; | |
2958 | ||
2959 | if (count == 0) | |
2960 | return 0; | |
2961 | ||
2962 | len = eb->buf_buf + eb->buf_size - eb->buf_get; | |
2963 | if (count > len) { | |
2964 | memcpy(buf, eb->buf_get, len); | |
2965 | memcpy(buf+len, eb->buf_buf, count - len); | |
2966 | eb->buf_get = eb->buf_buf + count - len; | |
2967 | } else { | |
2968 | memcpy(buf, eb->buf_get, count); | |
2969 | if (count < len) | |
2970 | eb->buf_get += count; | |
2971 | else /* count == len */ | |
2972 | eb->buf_get = eb->buf_buf; | |
2973 | } | |
2974 | ||
2975 | return count; | |
2976 | } | |
2977 | ||
2978 | ||
ea65370d | 2979 | static struct usb_serial_driver edgeport_1port_device = { |
18fcac35 | 2980 | .driver = { |
269bda1c GKH |
2981 | .owner = THIS_MODULE, |
2982 | .name = "edgeport_ti_1", | |
18fcac35 | 2983 | }, |
269bda1c | 2984 | .description = "Edgeport TI 1 port adapter", |
1da177e4 LT |
2985 | .id_table = edgeport_1port_id_table, |
2986 | .num_interrupt_in = 1, | |
2987 | .num_bulk_in = 1, | |
2988 | .num_bulk_out = 1, | |
2989 | .num_ports = 1, | |
2990 | .open = edge_open, | |
2991 | .close = edge_close, | |
2992 | .throttle = edge_throttle, | |
2993 | .unthrottle = edge_unthrottle, | |
2994 | .attach = edge_startup, | |
2995 | .shutdown = edge_shutdown, | |
2996 | .ioctl = edge_ioctl, | |
2997 | .set_termios = edge_set_termios, | |
2998 | .tiocmget = edge_tiocmget, | |
2999 | .tiocmset = edge_tiocmset, | |
3000 | .write = edge_write, | |
3001 | .write_room = edge_write_room, | |
3002 | .chars_in_buffer = edge_chars_in_buffer, | |
3003 | .break_ctl = edge_break, | |
3004 | .read_int_callback = edge_interrupt_callback, | |
3005 | .read_bulk_callback = edge_bulk_in_callback, | |
3006 | .write_bulk_callback = edge_bulk_out_callback, | |
3007 | }; | |
3008 | ||
ea65370d | 3009 | static struct usb_serial_driver edgeport_2port_device = { |
18fcac35 | 3010 | .driver = { |
269bda1c GKH |
3011 | .owner = THIS_MODULE, |
3012 | .name = "edgeport_ti_2", | |
18fcac35 | 3013 | }, |
269bda1c | 3014 | .description = "Edgeport TI 2 port adapter", |
1da177e4 LT |
3015 | .id_table = edgeport_2port_id_table, |
3016 | .num_interrupt_in = 1, | |
3017 | .num_bulk_in = 2, | |
3018 | .num_bulk_out = 2, | |
3019 | .num_ports = 2, | |
3020 | .open = edge_open, | |
3021 | .close = edge_close, | |
3022 | .throttle = edge_throttle, | |
3023 | .unthrottle = edge_unthrottle, | |
3024 | .attach = edge_startup, | |
3025 | .shutdown = edge_shutdown, | |
3026 | .ioctl = edge_ioctl, | |
3027 | .set_termios = edge_set_termios, | |
3028 | .tiocmget = edge_tiocmget, | |
3029 | .tiocmset = edge_tiocmset, | |
3030 | .write = edge_write, | |
3031 | .write_room = edge_write_room, | |
3032 | .chars_in_buffer = edge_chars_in_buffer, | |
3033 | .break_ctl = edge_break, | |
3034 | .read_int_callback = edge_interrupt_callback, | |
3035 | .read_bulk_callback = edge_bulk_in_callback, | |
3036 | .write_bulk_callback = edge_bulk_out_callback, | |
3037 | }; | |
3038 | ||
3039 | ||
3040 | static int __init edgeport_init(void) | |
3041 | { | |
3042 | int retval; | |
3043 | retval = usb_serial_register(&edgeport_1port_device); | |
3044 | if (retval) | |
3045 | goto failed_1port_device_register; | |
3046 | retval = usb_serial_register(&edgeport_2port_device); | |
3047 | if (retval) | |
3048 | goto failed_2port_device_register; | |
3049 | retval = usb_register(&io_driver); | |
3050 | if (retval) | |
3051 | goto failed_usb_register; | |
3052 | info(DRIVER_DESC " " DRIVER_VERSION); | |
3053 | return 0; | |
3054 | failed_usb_register: | |
3055 | usb_serial_deregister(&edgeport_2port_device); | |
3056 | failed_2port_device_register: | |
3057 | usb_serial_deregister(&edgeport_1port_device); | |
3058 | failed_1port_device_register: | |
3059 | return retval; | |
3060 | } | |
3061 | ||
3062 | static void __exit edgeport_exit (void) | |
3063 | { | |
3064 | usb_deregister (&io_driver); | |
3065 | usb_serial_deregister (&edgeport_1port_device); | |
3066 | usb_serial_deregister (&edgeport_2port_device); | |
3067 | } | |
3068 | ||
3069 | module_init(edgeport_init); | |
3070 | module_exit(edgeport_exit); | |
3071 | ||
3072 | /* Module information */ | |
3073 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
3074 | MODULE_DESCRIPTION(DRIVER_DESC); | |
3075 | MODULE_LICENSE("GPL"); | |
3076 | ||
3077 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
3078 | MODULE_PARM_DESC(debug, "Debug enabled or not"); | |
3079 | ||
3080 | module_param(low_latency, bool, S_IRUGO | S_IWUSR); | |
3081 | MODULE_PARM_DESC(low_latency, "Low latency enabled or not"); | |
3082 | ||
3083 | module_param(closing_wait, int, S_IRUGO | S_IWUSR); | |
3084 | MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs"); | |
3085 | ||
3086 | module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR); | |
3087 | MODULE_PARM_DESC(ignore_cpu_rev, "Ignore the cpu revision when connecting to a device"); | |
3088 |