Commit | Line | Data |
---|---|---|
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 | * | |
2742fd88 AC |
21 | * July 11, 2002 Removed 4 port device structure since all TI UMP |
22 | * chips have only 2 ports | |
1da177e4 LT |
23 | * David Iacovelli (davidi@ionetworks.com) |
24 | * | |
25 | */ | |
26 | ||
1da177e4 LT |
27 | #include <linux/kernel.h> |
28 | #include <linux/jiffies.h> | |
29 | #include <linux/errno.h> | |
30 | #include <linux/init.h> | |
31 | #include <linux/slab.h> | |
32 | #include <linux/tty.h> | |
33 | #include <linux/tty_driver.h> | |
34 | #include <linux/tty_flip.h> | |
35 | #include <linux/module.h> | |
36 | #include <linux/spinlock.h> | |
241ca64f | 37 | #include <linux/mutex.h> |
1da177e4 LT |
38 | #include <linux/serial.h> |
39 | #include <linux/ioctl.h> | |
d12b219a | 40 | #include <linux/firmware.h> |
2742fd88 | 41 | #include <linux/uaccess.h> |
1da177e4 | 42 | #include <linux/usb.h> |
a969888c | 43 | #include <linux/usb/serial.h> |
1da177e4 | 44 | |
1da177e4 LT |
45 | #include "io_16654.h" |
46 | #include "io_usbvend.h" | |
47 | #include "io_ti.h" | |
48 | ||
49 | /* | |
50 | * Version Information | |
51 | */ | |
fc4cbd75 | 52 | #define DRIVER_VERSION "v0.7mode043006" |
1da177e4 LT |
53 | #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli" |
54 | #define DRIVER_DESC "Edgeport USB Serial Driver" | |
55 | ||
1da177e4 LT |
56 | #define EPROM_PAGE_SIZE 64 |
57 | ||
58 | ||
59 | struct edgeport_uart_buf_desc { | |
2742fd88 | 60 | __u32 count; /* Number of bytes currently in buffer */ |
1da177e4 LT |
61 | }; |
62 | ||
63 | /* different hardware types */ | |
64 | #define HARDWARE_TYPE_930 0 | |
65 | #define HARDWARE_TYPE_TIUMP 1 | |
66 | ||
2742fd88 AC |
67 | /* IOCTL_PRIVATE_TI_GET_MODE Definitions */ |
68 | #define TI_MODE_CONFIGURING 0 /* Device has not entered start device */ | |
69 | #define TI_MODE_BOOT 1 /* Staying in boot mode */ | |
70 | #define TI_MODE_DOWNLOAD 2 /* Made it to download mode */ | |
71 | #define TI_MODE_TRANSITIONING 3 /* Currently in boot mode but | |
72 | transitioning to download mode */ | |
1da177e4 LT |
73 | |
74 | /* read urb state */ | |
75 | #define EDGE_READ_URB_RUNNING 0 | |
76 | #define EDGE_READ_URB_STOPPING 1 | |
77 | #define EDGE_READ_URB_STOPPED 2 | |
78 | ||
1da177e4 LT |
79 | #define EDGE_CLOSING_WAIT 4000 /* in .01 sec */ |
80 | ||
81 | #define EDGE_OUT_BUF_SIZE 1024 | |
82 | ||
83 | ||
84 | /* Product information read from the Edgeport */ | |
2742fd88 AC |
85 | struct product_info { |
86 | int TiMode; /* Current TI Mode */ | |
87 | __u8 hardware_type; /* Type of hardware */ | |
1da177e4 LT |
88 | } __attribute__((packed)); |
89 | ||
90 | /* circular buffer */ | |
91 | struct edge_buf { | |
92 | unsigned int buf_size; | |
93 | char *buf_buf; | |
94 | char *buf_get; | |
95 | char *buf_put; | |
96 | }; | |
97 | ||
98 | struct edgeport_port { | |
99 | __u16 uart_base; | |
100 | __u16 dma_address; | |
101 | __u8 shadow_msr; | |
102 | __u8 shadow_mcr; | |
103 | __u8 shadow_lsr; | |
104 | __u8 lsr_mask; | |
19af5cdb | 105 | __u32 ump_read_timeout; /* Number of milliseconds the UMP will |
1da177e4 LT |
106 | wait without data before completing |
107 | a read short */ | |
108 | int baud_rate; | |
109 | int close_pending; | |
110 | int lsr_event; | |
111 | struct edgeport_uart_buf_desc tx; | |
112 | struct async_icount icount; | |
113 | wait_queue_head_t delta_msr_wait; /* for handling sleeping while | |
114 | waiting for msr change to | |
115 | happen */ | |
116 | struct edgeport_serial *edge_serial; | |
117 | struct usb_serial_port *port; | |
2742fd88 | 118 | __u8 bUartMode; /* Port type, 0: RS232, etc. */ |
1da177e4 LT |
119 | spinlock_t ep_lock; |
120 | int ep_read_urb_state; | |
121 | int ep_write_urb_in_use; | |
122 | struct edge_buf *ep_out_buf; | |
123 | }; | |
124 | ||
125 | struct edgeport_serial { | |
126 | struct product_info product_info; | |
2742fd88 AC |
127 | u8 TI_I2C_Type; /* Type of I2C in UMP */ |
128 | u8 TiReadI2C; /* Set to TRUE if we have read the | |
129 | I2c in Boot Mode */ | |
241ca64f | 130 | struct mutex es_lock; |
1da177e4 LT |
131 | int num_ports_open; |
132 | struct usb_serial *serial; | |
133 | }; | |
134 | ||
135 | ||
136 | /* Devices that this driver supports */ | |
137 | static struct usb_device_id edgeport_1port_id_table [] = { | |
138 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) }, | |
139 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) }, | |
140 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) }, | |
141 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) }, | |
142 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) }, | |
143 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) }, | |
144 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) }, | |
145 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) }, | |
146 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) }, | |
147 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) }, | |
148 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) }, | |
149 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) }, | |
150 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) }, | |
151 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) }, | |
152 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) }, | |
153 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) }, | |
154 | { } | |
155 | }; | |
156 | ||
157 | static struct usb_device_id edgeport_2port_id_table [] = { | |
158 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) }, | |
159 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) }, | |
160 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) }, | |
161 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) }, | |
162 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) }, | |
163 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) }, | |
164 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) }, | |
165 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) }, | |
166 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) }, | |
167 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) }, | |
168 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) }, | |
169 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) }, | |
fc4cbd75 | 170 | /* The 4, 8 and 16 port devices show up as multiple 2 port devices */ |
1da177e4 | 171 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) }, |
fc4cbd75 MP |
172 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) }, |
173 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) }, | |
174 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) }, | |
175 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) }, | |
1da177e4 LT |
176 | { } |
177 | }; | |
178 | ||
179 | /* Devices that this driver supports */ | |
180 | static struct usb_device_id id_table_combined [] = { | |
181 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) }, | |
182 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) }, | |
183 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) }, | |
184 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) }, | |
185 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) }, | |
186 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) }, | |
187 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) }, | |
188 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) }, | |
189 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) }, | |
190 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) }, | |
191 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) }, | |
192 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) }, | |
193 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) }, | |
194 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) }, | |
195 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) }, | |
196 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) }, | |
197 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) }, | |
198 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) }, | |
199 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) }, | |
200 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) }, | |
201 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) }, | |
202 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) }, | |
203 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) }, | |
204 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) }, | |
205 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) }, | |
206 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) }, | |
207 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) }, | |
208 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) }, | |
209 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) }, | |
fc4cbd75 MP |
210 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) }, |
211 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) }, | |
212 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) }, | |
213 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) }, | |
1da177e4 LT |
214 | { } |
215 | }; | |
216 | ||
2742fd88 | 217 | MODULE_DEVICE_TABLE(usb, id_table_combined); |
1da177e4 LT |
218 | |
219 | static struct usb_driver io_driver = { | |
1da177e4 LT |
220 | .name = "io_ti", |
221 | .probe = usb_serial_probe, | |
222 | .disconnect = usb_serial_disconnect, | |
223 | .id_table = id_table_combined, | |
ba9dc657 | 224 | .no_dynamic_id = 1, |
1da177e4 LT |
225 | }; |
226 | ||
227 | ||
d12b219a JS |
228 | static unsigned char OperationalMajorVersion; |
229 | static unsigned char OperationalMinorVersion; | |
230 | static unsigned short OperationalBuildNumber; | |
1da177e4 LT |
231 | |
232 | static int debug; | |
233 | ||
1da177e4 | 234 | static int closing_wait = EDGE_CLOSING_WAIT; |
2742fd88 AC |
235 | static int ignore_cpu_rev; |
236 | static int default_uart_mode; /* RS232 */ | |
1da177e4 | 237 | |
2742fd88 AC |
238 | static void edge_tty_recv(struct device *dev, struct tty_struct *tty, |
239 | unsigned char *data, int length); | |
1da177e4 LT |
240 | |
241 | static void stop_read(struct edgeport_port *edge_port); | |
242 | static int restart_read(struct edgeport_port *edge_port); | |
243 | ||
95da310e AC |
244 | static void edge_set_termios(struct tty_struct *tty, |
245 | struct usb_serial_port *port, struct ktermios *old_termios); | |
246 | static void edge_send(struct tty_struct *tty); | |
1da177e4 | 247 | |
fc4cbd75 MP |
248 | /* sysfs attributes */ |
249 | static int edge_create_sysfs_attrs(struct usb_serial_port *port); | |
250 | static int edge_remove_sysfs_attrs(struct usb_serial_port *port); | |
251 | ||
1da177e4 LT |
252 | /* circular buffer */ |
253 | static struct edge_buf *edge_buf_alloc(unsigned int size); | |
254 | static void edge_buf_free(struct edge_buf *eb); | |
255 | static void edge_buf_clear(struct edge_buf *eb); | |
256 | static unsigned int edge_buf_data_avail(struct edge_buf *eb); | |
257 | static unsigned int edge_buf_space_avail(struct edge_buf *eb); | |
258 | static unsigned int edge_buf_put(struct edge_buf *eb, const char *buf, | |
259 | unsigned int count); | |
260 | static unsigned int edge_buf_get(struct edge_buf *eb, char *buf, | |
261 | unsigned int count); | |
262 | ||
263 | ||
2742fd88 AC |
264 | static int ti_vread_sync(struct usb_device *dev, __u8 request, |
265 | __u16 value, __u16 index, u8 *data, int size) | |
1da177e4 LT |
266 | { |
267 | int status; | |
268 | ||
2742fd88 AC |
269 | status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request, |
270 | (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN), | |
271 | value, index, data, size, 1000); | |
1da177e4 LT |
272 | if (status < 0) |
273 | return status; | |
274 | if (status != size) { | |
2742fd88 AC |
275 | dbg("%s - wanted to write %d, but only wrote %d", |
276 | __func__, size, status); | |
1da177e4 LT |
277 | return -ECOMM; |
278 | } | |
279 | return 0; | |
280 | } | |
281 | ||
2742fd88 AC |
282 | static int ti_vsend_sync(struct usb_device *dev, __u8 request, |
283 | __u16 value, __u16 index, u8 *data, int size) | |
1da177e4 LT |
284 | { |
285 | int status; | |
286 | ||
2742fd88 AC |
287 | status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request, |
288 | (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT), | |
289 | value, index, data, size, 1000); | |
1da177e4 LT |
290 | if (status < 0) |
291 | return status; | |
292 | if (status != size) { | |
2742fd88 | 293 | dbg("%s - wanted to write %d, but only wrote %d", |
441b62c1 | 294 | __func__, size, status); |
1da177e4 LT |
295 | return -ECOMM; |
296 | } | |
297 | return 0; | |
298 | } | |
299 | ||
2742fd88 | 300 | static int send_cmd(struct usb_device *dev, __u8 command, |
1da177e4 LT |
301 | __u8 moduleid, __u16 value, u8 *data, |
302 | int size) | |
303 | { | |
2742fd88 | 304 | return ti_vsend_sync(dev, command, value, moduleid, data, size); |
1da177e4 LT |
305 | } |
306 | ||
307 | /* clear tx/rx buffers and fifo in TI UMP */ | |
2742fd88 | 308 | static int purge_port(struct usb_serial_port *port, __u16 mask) |
1da177e4 LT |
309 | { |
310 | int port_number = port->number - port->serial->minor; | |
311 | ||
2742fd88 | 312 | dbg("%s - port %d, mask %x", __func__, port_number, mask); |
1da177e4 | 313 | |
2742fd88 | 314 | return send_cmd(port->serial->dev, |
1da177e4 LT |
315 | UMPC_PURGE_PORT, |
316 | (__u8)(UMPM_UART1_PORT + port_number), | |
317 | mask, | |
318 | NULL, | |
319 | 0); | |
320 | } | |
321 | ||
322 | /** | |
2742fd88 | 323 | * read_download_mem - Read edgeport memory from TI chip |
1da177e4 LT |
324 | * @dev: usb device pointer |
325 | * @start_address: Device CPU address at which to read | |
326 | * @length: Length of above data | |
327 | * @address_type: Can read both XDATA and I2C | |
328 | * @buffer: pointer to input data buffer | |
329 | */ | |
2742fd88 | 330 | static int read_download_mem(struct usb_device *dev, int start_address, |
1da177e4 LT |
331 | int length, __u8 address_type, __u8 *buffer) |
332 | { | |
333 | int status = 0; | |
334 | __u8 read_length; | |
335 | __be16 be_start_address; | |
2742fd88 AC |
336 | |
337 | dbg("%s - @ %x for %d", __func__, start_address, length); | |
1da177e4 LT |
338 | |
339 | /* Read in blocks of 64 bytes | |
340 | * (TI firmware can't handle more than 64 byte reads) | |
341 | */ | |
342 | while (length) { | |
343 | if (length > 64) | |
2742fd88 | 344 | read_length = 64; |
1da177e4 LT |
345 | else |
346 | read_length = (__u8)length; | |
347 | ||
348 | if (read_length > 1) { | |
2742fd88 | 349 | dbg("%s - @ %x for %d", __func__, |
1da177e4 LT |
350 | start_address, read_length); |
351 | } | |
2742fd88 AC |
352 | be_start_address = cpu_to_be16(start_address); |
353 | status = ti_vread_sync(dev, UMPC_MEMORY_READ, | |
354 | (__u16)address_type, | |
355 | (__force __u16)be_start_address, | |
356 | buffer, read_length); | |
1da177e4 LT |
357 | |
358 | if (status) { | |
2742fd88 | 359 | dbg("%s - ERROR %x", __func__, status); |
1da177e4 LT |
360 | return status; |
361 | } | |
362 | ||
2742fd88 | 363 | if (read_length > 1) |
441b62c1 | 364 | usb_serial_debug_data(debug, &dev->dev, __func__, |
1da177e4 | 365 | read_length, buffer); |
1da177e4 LT |
366 | |
367 | /* Update pointers/length */ | |
368 | start_address += read_length; | |
369 | buffer += read_length; | |
370 | length -= read_length; | |
371 | } | |
2742fd88 | 372 | |
1da177e4 LT |
373 | return status; |
374 | } | |
375 | ||
2742fd88 AC |
376 | static int read_ram(struct usb_device *dev, int start_address, |
377 | int length, __u8 *buffer) | |
1da177e4 | 378 | { |
2742fd88 AC |
379 | return read_download_mem(dev, start_address, length, |
380 | DTK_ADDR_SPACE_XDATA, buffer); | |
1da177e4 LT |
381 | } |
382 | ||
383 | /* Read edgeport memory to a given block */ | |
2742fd88 AC |
384 | static int read_boot_mem(struct edgeport_serial *serial, |
385 | int start_address, int length, __u8 *buffer) | |
1da177e4 LT |
386 | { |
387 | int status = 0; | |
388 | int i; | |
389 | ||
2742fd88 AC |
390 | for (i = 0; i < length; i++) { |
391 | status = ti_vread_sync(serial->serial->dev, | |
392 | UMPC_MEMORY_READ, serial->TI_I2C_Type, | |
393 | (__u16)(start_address+i), &buffer[i], 0x01); | |
1da177e4 | 394 | if (status) { |
2742fd88 | 395 | dbg("%s - ERROR %x", __func__, status); |
1da177e4 LT |
396 | return status; |
397 | } | |
398 | } | |
399 | ||
2742fd88 AC |
400 | dbg("%s - start_address = %x, length = %d", |
401 | __func__, start_address, length); | |
402 | usb_serial_debug_data(debug, &serial->serial->dev->dev, | |
403 | __func__, length, buffer); | |
1da177e4 LT |
404 | |
405 | serial->TiReadI2C = 1; | |
406 | ||
407 | return status; | |
408 | } | |
409 | ||
410 | /* Write given block to TI EPROM memory */ | |
2742fd88 AC |
411 | static int write_boot_mem(struct edgeport_serial *serial, |
412 | int start_address, int length, __u8 *buffer) | |
1da177e4 LT |
413 | { |
414 | int status = 0; | |
415 | int i; | |
416 | __u8 temp; | |
417 | ||
418 | /* Must do a read before write */ | |
419 | if (!serial->TiReadI2C) { | |
2742fd88 | 420 | status = read_boot_mem(serial, 0, 1, &temp); |
1da177e4 LT |
421 | if (status) |
422 | return status; | |
423 | } | |
424 | ||
2742fd88 AC |
425 | for (i = 0; i < length; ++i) { |
426 | status = ti_vsend_sync(serial->serial->dev, | |
427 | UMPC_MEMORY_WRITE, buffer[i], | |
428 | (__u16)(i + start_address), NULL, 0); | |
1da177e4 LT |
429 | if (status) |
430 | return status; | |
431 | } | |
432 | ||
2742fd88 AC |
433 | dbg("%s - start_sddr = %x, length = %d", |
434 | __func__, start_address, length); | |
435 | usb_serial_debug_data(debug, &serial->serial->dev->dev, | |
436 | __func__, length, buffer); | |
1da177e4 LT |
437 | |
438 | return status; | |
439 | } | |
440 | ||
441 | ||
442 | /* Write edgeport I2C memory to TI chip */ | |
2742fd88 AC |
443 | static int write_i2c_mem(struct edgeport_serial *serial, |
444 | int start_address, int length, __u8 address_type, __u8 *buffer) | |
1da177e4 LT |
445 | { |
446 | int status = 0; | |
447 | int write_length; | |
448 | __be16 be_start_address; | |
449 | ||
450 | /* We can only send a maximum of 1 aligned byte page at a time */ | |
2742fd88 | 451 | |
1da177e4 | 452 | /* calulate the number of bytes left in the first page */ |
2742fd88 AC |
453 | write_length = EPROM_PAGE_SIZE - |
454 | (start_address & (EPROM_PAGE_SIZE - 1)); | |
1da177e4 LT |
455 | |
456 | if (write_length > length) | |
457 | write_length = length; | |
458 | ||
2742fd88 AC |
459 | dbg("%s - BytesInFirstPage Addr = %x, length = %d", |
460 | __func__, start_address, write_length); | |
461 | usb_serial_debug_data(debug, &serial->serial->dev->dev, | |
462 | __func__, write_length, buffer); | |
1da177e4 LT |
463 | |
464 | /* Write first page */ | |
2742fd88 AC |
465 | be_start_address = cpu_to_be16(start_address); |
466 | status = ti_vsend_sync(serial->serial->dev, | |
467 | UMPC_MEMORY_WRITE, (__u16)address_type, | |
468 | (__force __u16)be_start_address, | |
469 | buffer, write_length); | |
1da177e4 | 470 | if (status) { |
2742fd88 | 471 | dbg("%s - ERROR %d", __func__, status); |
1da177e4 LT |
472 | return status; |
473 | } | |
474 | ||
475 | length -= write_length; | |
476 | start_address += write_length; | |
477 | buffer += write_length; | |
478 | ||
2742fd88 AC |
479 | /* We should be aligned now -- can write |
480 | max page size bytes at a time */ | |
1da177e4 LT |
481 | while (length) { |
482 | if (length > EPROM_PAGE_SIZE) | |
483 | write_length = EPROM_PAGE_SIZE; | |
484 | else | |
485 | write_length = length; | |
486 | ||
2742fd88 AC |
487 | dbg("%s - Page Write Addr = %x, length = %d", |
488 | __func__, start_address, write_length); | |
489 | usb_serial_debug_data(debug, &serial->serial->dev->dev, | |
490 | __func__, write_length, buffer); | |
1da177e4 LT |
491 | |
492 | /* Write next page */ | |
2742fd88 AC |
493 | be_start_address = cpu_to_be16(start_address); |
494 | status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE, | |
495 | (__u16)address_type, | |
496 | (__force __u16)be_start_address, | |
497 | buffer, write_length); | |
1da177e4 | 498 | if (status) { |
2742fd88 AC |
499 | dev_err(&serial->serial->dev->dev, "%s - ERROR %d\n", |
500 | __func__, status); | |
1da177e4 LT |
501 | return status; |
502 | } | |
2742fd88 | 503 | |
1da177e4 LT |
504 | length -= write_length; |
505 | start_address += write_length; | |
506 | buffer += write_length; | |
507 | } | |
508 | return status; | |
509 | } | |
510 | ||
511 | /* Examine the UMP DMA registers and LSR | |
2742fd88 | 512 | * |
1da177e4 LT |
513 | * Check the MSBit of the X and Y DMA byte count registers. |
514 | * A zero in this bit indicates that the TX DMA buffers are empty | |
515 | * then check the TX Empty bit in the UART. | |
516 | */ | |
2742fd88 | 517 | static int tx_active(struct edgeport_port *port) |
1da177e4 LT |
518 | { |
519 | int status; | |
520 | struct out_endpoint_desc_block *oedb; | |
521 | __u8 *lsr; | |
522 | int bytes_left = 0; | |
523 | ||
2742fd88 | 524 | oedb = kmalloc(sizeof(*oedb), GFP_KERNEL); |
1da177e4 | 525 | if (!oedb) { |
2742fd88 | 526 | dev_err(&port->port->dev, "%s - out of memory\n", __func__); |
1da177e4 LT |
527 | return -ENOMEM; |
528 | } | |
529 | ||
2742fd88 | 530 | lsr = kmalloc(1, GFP_KERNEL); /* Sigh, that's right, just one byte, |
1da177e4 LT |
531 | as not all platforms can do DMA |
532 | from stack */ | |
533 | if (!lsr) { | |
534 | kfree(oedb); | |
535 | return -ENOMEM; | |
536 | } | |
537 | /* Read the DMA Count Registers */ | |
2742fd88 AC |
538 | status = read_ram(port->port->serial->dev, port->dma_address, |
539 | sizeof(*oedb), (void *)oedb); | |
1da177e4 LT |
540 | if (status) |
541 | goto exit_is_tx_active; | |
542 | ||
2742fd88 | 543 | dbg("%s - XByteCount 0x%X", __func__, oedb->XByteCount); |
1da177e4 LT |
544 | |
545 | /* and the LSR */ | |
2742fd88 AC |
546 | status = read_ram(port->port->serial->dev, |
547 | port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr); | |
1da177e4 LT |
548 | |
549 | if (status) | |
550 | goto exit_is_tx_active; | |
2742fd88 AC |
551 | dbg("%s - LSR = 0x%X", __func__, *lsr); |
552 | ||
1da177e4 | 553 | /* If either buffer has data or we are transmitting then return TRUE */ |
2742fd88 | 554 | if ((oedb->XByteCount & 0x80) != 0) |
1da177e4 LT |
555 | bytes_left += 64; |
556 | ||
2742fd88 | 557 | if ((*lsr & UMP_UART_LSR_TX_MASK) == 0) |
1da177e4 LT |
558 | bytes_left += 1; |
559 | ||
560 | /* We return Not Active if we get any kind of error */ | |
561 | exit_is_tx_active: | |
2742fd88 | 562 | dbg("%s - return %d", __func__, bytes_left); |
1da177e4 LT |
563 | |
564 | kfree(lsr); | |
565 | kfree(oedb); | |
566 | return bytes_left; | |
567 | } | |
568 | ||
2742fd88 AC |
569 | static void chase_port(struct edgeport_port *port, unsigned long timeout, |
570 | int flush) | |
1da177e4 LT |
571 | { |
572 | int baud_rate; | |
4a90f09b | 573 | struct tty_struct *tty = tty_port_tty_get(&port->port->port); |
1da177e4 LT |
574 | wait_queue_t wait; |
575 | unsigned long flags; | |
576 | ||
577 | if (!timeout) | |
2742fd88 | 578 | timeout = (HZ * EDGE_CLOSING_WAIT)/100; |
1da177e4 LT |
579 | |
580 | /* wait for data to drain from the buffer */ | |
581 | spin_lock_irqsave(&port->ep_lock, flags); | |
582 | init_waitqueue_entry(&wait, current); | |
583 | add_wait_queue(&tty->write_wait, &wait); | |
584 | for (;;) { | |
585 | set_current_state(TASK_INTERRUPTIBLE); | |
586 | if (edge_buf_data_avail(port->ep_out_buf) == 0 | |
587 | || timeout == 0 || signal_pending(current) | |
2742fd88 AC |
588 | || !usb_get_intfdata(port->port->serial->interface)) |
589 | /* disconnect */ | |
1da177e4 LT |
590 | break; |
591 | spin_unlock_irqrestore(&port->ep_lock, flags); | |
592 | timeout = schedule_timeout(timeout); | |
593 | spin_lock_irqsave(&port->ep_lock, flags); | |
594 | } | |
595 | set_current_state(TASK_RUNNING); | |
596 | remove_wait_queue(&tty->write_wait, &wait); | |
597 | if (flush) | |
598 | edge_buf_clear(port->ep_out_buf); | |
599 | spin_unlock_irqrestore(&port->ep_lock, flags); | |
4a90f09b | 600 | tty_kref_put(tty); |
1da177e4 LT |
601 | |
602 | /* wait for data to drain from the device */ | |
603 | timeout += jiffies; | |
604 | while ((long)(jiffies - timeout) < 0 && !signal_pending(current) | |
2742fd88 AC |
605 | && usb_get_intfdata(port->port->serial->interface)) { |
606 | /* not disconnected */ | |
607 | if (!tx_active(port)) | |
1da177e4 LT |
608 | break; |
609 | msleep(10); | |
610 | } | |
611 | ||
612 | /* disconnected */ | |
613 | if (!usb_get_intfdata(port->port->serial->interface)) | |
614 | return; | |
615 | ||
616 | /* wait one more character time, based on baud rate */ | |
2742fd88 AC |
617 | /* (tx_active doesn't seem to wait for the last byte) */ |
618 | baud_rate = port->baud_rate; | |
619 | if (baud_rate == 0) | |
1da177e4 | 620 | baud_rate = 50; |
dfa5ec79 | 621 | msleep(max(1, DIV_ROUND_UP(10000, baud_rate))); |
1da177e4 LT |
622 | } |
623 | ||
2742fd88 | 624 | static int choose_config(struct usb_device *dev) |
1da177e4 | 625 | { |
2742fd88 AC |
626 | /* |
627 | * There may be multiple configurations on this device, in which case | |
628 | * we would need to read and parse all of them to find out which one | |
629 | * we want. However, we just support one config at this point, | |
630 | * configuration # 1, which is Config Descriptor 0. | |
631 | */ | |
1da177e4 | 632 | |
2742fd88 AC |
633 | dbg("%s - Number of Interfaces = %d", |
634 | __func__, dev->config->desc.bNumInterfaces); | |
635 | dbg("%s - MAX Power = %d", | |
636 | __func__, dev->config->desc.bMaxPower * 2); | |
1da177e4 LT |
637 | |
638 | if (dev->config->desc.bNumInterfaces != 1) { | |
2742fd88 AC |
639 | dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", |
640 | __func__); | |
1da177e4 LT |
641 | return -ENODEV; |
642 | } | |
643 | ||
644 | return 0; | |
645 | } | |
646 | ||
2742fd88 AC |
647 | static int read_rom(struct edgeport_serial *serial, |
648 | int start_address, int length, __u8 *buffer) | |
1da177e4 LT |
649 | { |
650 | int status; | |
651 | ||
652 | if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { | |
2742fd88 | 653 | status = read_download_mem(serial->serial->dev, |
1da177e4 LT |
654 | start_address, |
655 | length, | |
656 | serial->TI_I2C_Type, | |
657 | buffer); | |
658 | } else { | |
2742fd88 AC |
659 | status = read_boot_mem(serial, start_address, length, |
660 | buffer); | |
1da177e4 | 661 | } |
1da177e4 LT |
662 | return status; |
663 | } | |
664 | ||
2742fd88 AC |
665 | static int write_rom(struct edgeport_serial *serial, int start_address, |
666 | int length, __u8 *buffer) | |
1da177e4 LT |
667 | { |
668 | if (serial->product_info.TiMode == TI_MODE_BOOT) | |
2742fd88 AC |
669 | return write_boot_mem(serial, start_address, length, |
670 | buffer); | |
1da177e4 LT |
671 | |
672 | if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) | |
2742fd88 AC |
673 | return write_i2c_mem(serial, start_address, length, |
674 | serial->TI_I2C_Type, buffer); | |
1da177e4 LT |
675 | return -EINVAL; |
676 | } | |
677 | ||
678 | ||
679 | ||
680 | /* Read a descriptor header from I2C based on type */ | |
2742fd88 AC |
681 | static int get_descriptor_addr(struct edgeport_serial *serial, |
682 | int desc_type, struct ti_i2c_desc *rom_desc) | |
1da177e4 LT |
683 | { |
684 | int start_address; | |
685 | int status; | |
686 | ||
687 | /* Search for requested descriptor in I2C */ | |
688 | start_address = 2; | |
689 | do { | |
2742fd88 | 690 | status = read_rom(serial, |
1da177e4 LT |
691 | start_address, |
692 | sizeof(struct ti_i2c_desc), | |
2742fd88 | 693 | (__u8 *)rom_desc); |
1da177e4 LT |
694 | if (status) |
695 | return 0; | |
696 | ||
697 | if (rom_desc->Type == desc_type) | |
698 | return start_address; | |
699 | ||
2742fd88 AC |
700 | start_address = start_address + sizeof(struct ti_i2c_desc) |
701 | + rom_desc->Size; | |
1da177e4 LT |
702 | |
703 | } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type); | |
2742fd88 | 704 | |
1da177e4 LT |
705 | return 0; |
706 | } | |
707 | ||
708 | /* Validate descriptor checksum */ | |
2742fd88 | 709 | static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer) |
1da177e4 LT |
710 | { |
711 | __u16 i; | |
712 | __u8 cs = 0; | |
713 | ||
2742fd88 | 714 | for (i = 0; i < rom_desc->Size; i++) |
1da177e4 | 715 | cs = (__u8)(cs + buffer[i]); |
2742fd88 | 716 | |
1da177e4 | 717 | if (cs != rom_desc->CheckSum) { |
2742fd88 | 718 | dbg("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs); |
1da177e4 LT |
719 | return -EINVAL; |
720 | } | |
721 | return 0; | |
722 | } | |
723 | ||
724 | /* Make sure that the I2C image is good */ | |
2742fd88 | 725 | static int check_i2c_image(struct edgeport_serial *serial) |
1da177e4 LT |
726 | { |
727 | struct device *dev = &serial->serial->dev->dev; | |
728 | int status = 0; | |
729 | struct ti_i2c_desc *rom_desc; | |
730 | int start_address = 2; | |
731 | __u8 *buffer; | |
732 | __u16 ttype; | |
733 | ||
2742fd88 | 734 | rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); |
1da177e4 | 735 | if (!rom_desc) { |
2742fd88 | 736 | dev_err(dev, "%s - out of memory\n", __func__); |
1da177e4 LT |
737 | return -ENOMEM; |
738 | } | |
2742fd88 | 739 | buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL); |
1da177e4 | 740 | if (!buffer) { |
2742fd88 AC |
741 | dev_err(dev, "%s - out of memory when allocating buffer\n", |
742 | __func__); | |
743 | kfree(rom_desc); | |
1da177e4 LT |
744 | return -ENOMEM; |
745 | } | |
746 | ||
2742fd88 AC |
747 | /* Read the first byte (Signature0) must be 0x52 or 0x10 */ |
748 | status = read_rom(serial, 0, 1, buffer); | |
1da177e4 | 749 | if (status) |
2742fd88 | 750 | goto out; |
1da177e4 LT |
751 | |
752 | if (*buffer != UMP5152 && *buffer != UMP3410) { | |
2742fd88 | 753 | dev_err(dev, "%s - invalid buffer signature\n", __func__); |
1da177e4 | 754 | status = -ENODEV; |
2742fd88 | 755 | goto out; |
1da177e4 LT |
756 | } |
757 | ||
758 | do { | |
2742fd88 AC |
759 | /* Validate the I2C */ |
760 | status = read_rom(serial, | |
1da177e4 LT |
761 | start_address, |
762 | sizeof(struct ti_i2c_desc), | |
763 | (__u8 *)rom_desc); | |
764 | if (status) | |
765 | break; | |
766 | ||
2742fd88 AC |
767 | if ((start_address + sizeof(struct ti_i2c_desc) + |
768 | rom_desc->Size) > TI_MAX_I2C_SIZE) { | |
1da177e4 | 769 | status = -ENODEV; |
2742fd88 | 770 | dbg("%s - structure too big, erroring out.", __func__); |
1da177e4 LT |
771 | break; |
772 | } | |
773 | ||
2742fd88 | 774 | dbg("%s Type = 0x%x", __func__, rom_desc->Type); |
1da177e4 | 775 | |
2742fd88 | 776 | /* Skip type 2 record */ |
1da177e4 | 777 | ttype = rom_desc->Type & 0x0f; |
2742fd88 AC |
778 | if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC |
779 | && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) { | |
780 | /* Read the descriptor data */ | |
781 | status = read_rom(serial, start_address + | |
782 | sizeof(struct ti_i2c_desc), | |
783 | rom_desc->Size, buffer); | |
1da177e4 LT |
784 | if (status) |
785 | break; | |
786 | ||
2742fd88 | 787 | status = valid_csum(rom_desc, buffer); |
1da177e4 LT |
788 | if (status) |
789 | break; | |
790 | } | |
2742fd88 AC |
791 | start_address = start_address + sizeof(struct ti_i2c_desc) + |
792 | rom_desc->Size; | |
1da177e4 | 793 | |
2742fd88 AC |
794 | } while ((rom_desc->Type != I2C_DESC_TYPE_ION) && |
795 | (start_address < TI_MAX_I2C_SIZE)); | |
1da177e4 | 796 | |
2742fd88 AC |
797 | if ((rom_desc->Type != I2C_DESC_TYPE_ION) || |
798 | (start_address > TI_MAX_I2C_SIZE)) | |
1da177e4 LT |
799 | status = -ENODEV; |
800 | ||
2742fd88 AC |
801 | out: |
802 | kfree(buffer); | |
803 | kfree(rom_desc); | |
1da177e4 LT |
804 | return status; |
805 | } | |
806 | ||
2742fd88 | 807 | static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer) |
1da177e4 LT |
808 | { |
809 | int status; | |
810 | int start_address; | |
811 | struct ti_i2c_desc *rom_desc; | |
812 | struct edge_ti_manuf_descriptor *desc; | |
813 | ||
2742fd88 | 814 | rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); |
1da177e4 | 815 | if (!rom_desc) { |
2742fd88 AC |
816 | dev_err(&serial->serial->dev->dev, "%s - out of memory\n", |
817 | __func__); | |
1da177e4 LT |
818 | return -ENOMEM; |
819 | } | |
2742fd88 AC |
820 | start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION, |
821 | rom_desc); | |
1da177e4 LT |
822 | |
823 | if (!start_address) { | |
2742fd88 | 824 | dbg("%s - Edge Descriptor not found in I2C", __func__); |
1da177e4 LT |
825 | status = -ENODEV; |
826 | goto exit; | |
827 | } | |
828 | ||
2742fd88 AC |
829 | /* Read the descriptor data */ |
830 | status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc), | |
831 | rom_desc->Size, buffer); | |
1da177e4 LT |
832 | if (status) |
833 | goto exit; | |
2742fd88 AC |
834 | |
835 | status = valid_csum(rom_desc, buffer); | |
836 | ||
1da177e4 | 837 | desc = (struct edge_ti_manuf_descriptor *)buffer; |
2742fd88 AC |
838 | dbg("%s - IonConfig 0x%x", __func__, desc->IonConfig); |
839 | dbg("%s - Version %d", __func__, desc->Version); | |
840 | dbg("%s - Cpu/Board 0x%x", __func__, desc->CpuRev_BoardRev); | |
841 | dbg("%s - NumPorts %d", __func__, desc->NumPorts); | |
842 | dbg("%s - NumVirtualPorts %d", __func__, desc->NumVirtualPorts); | |
843 | dbg("%s - TotalPorts %d", __func__, desc->TotalPorts); | |
1da177e4 LT |
844 | |
845 | exit: | |
2742fd88 | 846 | kfree(rom_desc); |
1da177e4 LT |
847 | return status; |
848 | } | |
849 | ||
850 | /* Build firmware header used for firmware update */ | |
2742fd88 | 851 | static int build_i2c_fw_hdr(__u8 *header, struct device *dev) |
1da177e4 LT |
852 | { |
853 | __u8 *buffer; | |
854 | int buffer_size; | |
855 | int i; | |
d12b219a | 856 | int err; |
1da177e4 LT |
857 | __u8 cs = 0; |
858 | struct ti_i2c_desc *i2c_header; | |
859 | struct ti_i2c_image_header *img_header; | |
860 | struct ti_i2c_firmware_rec *firmware_rec; | |
d12b219a JS |
861 | const struct firmware *fw; |
862 | const char *fw_name = "edgeport/down3.bin"; | |
1da177e4 | 863 | |
2742fd88 AC |
864 | /* In order to update the I2C firmware we must change the type 2 record |
865 | * to type 0xF2. This will force the UMP to come up in Boot Mode. | |
866 | * Then while in boot mode, the driver will download the latest | |
867 | * firmware (padded to 15.5k) into the UMP ram. And finally when the | |
868 | * device comes back up in download mode the driver will cause the new | |
869 | * firmware to be copied from the UMP Ram to I2C and the firmware will | |
870 | * update the record type from 0xf2 to 0x02. | |
871 | */ | |
872 | ||
873 | /* Allocate a 15.5k buffer + 2 bytes for version number | |
874 | * (Firmware Record) */ | |
875 | buffer_size = (((1024 * 16) - 512 ) + | |
876 | sizeof(struct ti_i2c_firmware_rec)); | |
877 | ||
878 | buffer = kmalloc(buffer_size, GFP_KERNEL); | |
1da177e4 | 879 | if (!buffer) { |
2742fd88 | 880 | dev_err(dev, "%s - out of memory\n", __func__); |
1da177e4 LT |
881 | return -ENOMEM; |
882 | } | |
2742fd88 | 883 | |
1da177e4 | 884 | // Set entire image of 0xffs |
2742fd88 | 885 | memset(buffer, 0xff, buffer_size); |
1da177e4 | 886 | |
d12b219a JS |
887 | err = request_firmware(&fw, fw_name, dev); |
888 | if (err) { | |
889 | printk(KERN_ERR "Failed to load image \"%s\" err %d\n", | |
890 | fw_name, err); | |
891 | kfree(buffer); | |
892 | return err; | |
893 | } | |
894 | ||
895 | /* Save Download Version Number */ | |
896 | OperationalMajorVersion = fw->data[0]; | |
897 | OperationalMinorVersion = fw->data[1]; | |
898 | OperationalBuildNumber = fw->data[2] | (fw->data[3] << 8); | |
899 | ||
2742fd88 | 900 | /* Copy version number into firmware record */ |
1da177e4 LT |
901 | firmware_rec = (struct ti_i2c_firmware_rec *)buffer; |
902 | ||
d12b219a JS |
903 | firmware_rec->Ver_Major = OperationalMajorVersion; |
904 | firmware_rec->Ver_Minor = OperationalMinorVersion; | |
1da177e4 | 905 | |
2742fd88 | 906 | /* Pointer to fw_down memory image */ |
d12b219a | 907 | img_header = (struct ti_i2c_image_header *)&fw->data[4]; |
1da177e4 | 908 | |
2742fd88 | 909 | memcpy(buffer + sizeof(struct ti_i2c_firmware_rec), |
d12b219a | 910 | &fw->data[4 + sizeof(struct ti_i2c_image_header)], |
1da177e4 LT |
911 | le16_to_cpu(img_header->Length)); |
912 | ||
d12b219a JS |
913 | release_firmware(fw); |
914 | ||
1da177e4 LT |
915 | for (i=0; i < buffer_size; i++) { |
916 | cs = (__u8)(cs + buffer[i]); | |
917 | } | |
918 | ||
2742fd88 | 919 | kfree(buffer); |
1da177e4 | 920 | |
2742fd88 | 921 | /* Build new header */ |
1da177e4 LT |
922 | i2c_header = (struct ti_i2c_desc *)header; |
923 | firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data; | |
2742fd88 | 924 | |
1da177e4 LT |
925 | i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK; |
926 | i2c_header->Size = (__u16)buffer_size; | |
927 | i2c_header->CheckSum = cs; | |
d12b219a JS |
928 | firmware_rec->Ver_Major = OperationalMajorVersion; |
929 | firmware_rec->Ver_Minor = OperationalMinorVersion; | |
1da177e4 LT |
930 | |
931 | return 0; | |
932 | } | |
933 | ||
934 | /* Try to figure out what type of I2c we have */ | |
2742fd88 | 935 | static int i2c_type_bootmode(struct edgeport_serial *serial) |
1da177e4 LT |
936 | { |
937 | int status; | |
938 | __u8 data; | |
2742fd88 AC |
939 | |
940 | /* Try to read type 2 */ | |
941 | status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, | |
942 | DTK_ADDR_SPACE_I2C_TYPE_II, 0, &data, 0x01); | |
1da177e4 | 943 | if (status) |
2742fd88 | 944 | dbg("%s - read 2 status error = %d", __func__, status); |
1da177e4 | 945 | else |
2742fd88 | 946 | dbg("%s - read 2 data = 0x%x", __func__, data); |
1da177e4 | 947 | if ((!status) && (data == UMP5152 || data == UMP3410)) { |
2742fd88 | 948 | dbg("%s - ROM_TYPE_II", __func__); |
1da177e4 LT |
949 | serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; |
950 | return 0; | |
951 | } | |
952 | ||
2742fd88 AC |
953 | /* Try to read type 3 */ |
954 | status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, | |
955 | DTK_ADDR_SPACE_I2C_TYPE_III, 0, &data, 0x01); | |
1da177e4 | 956 | if (status) |
2742fd88 | 957 | dbg("%s - read 3 status error = %d", __func__, status); |
1da177e4 | 958 | else |
2742fd88 | 959 | dbg("%s - read 2 data = 0x%x", __func__, data); |
1da177e4 | 960 | if ((!status) && (data == UMP5152 || data == UMP3410)) { |
2742fd88 | 961 | dbg("%s - ROM_TYPE_III", __func__); |
1da177e4 LT |
962 | serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III; |
963 | return 0; | |
964 | } | |
965 | ||
2742fd88 | 966 | dbg("%s - Unknown", __func__); |
1da177e4 LT |
967 | serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; |
968 | return -ENODEV; | |
969 | } | |
970 | ||
2742fd88 AC |
971 | static int bulk_xfer(struct usb_serial *serial, void *buffer, |
972 | int length, int *num_sent) | |
1da177e4 LT |
973 | { |
974 | int status; | |
975 | ||
2742fd88 AC |
976 | status = usb_bulk_msg(serial->dev, |
977 | usb_sndbulkpipe(serial->dev, | |
978 | serial->port[0]->bulk_out_endpointAddress), | |
979 | buffer, length, num_sent, 1000); | |
1da177e4 LT |
980 | return status; |
981 | } | |
982 | ||
983 | /* Download given firmware image to the device (IN BOOT MODE) */ | |
2742fd88 AC |
984 | static int download_code(struct edgeport_serial *serial, __u8 *image, |
985 | int image_length) | |
1da177e4 LT |
986 | { |
987 | int status = 0; | |
988 | int pos; | |
989 | int transfer; | |
990 | int done; | |
991 | ||
2742fd88 | 992 | /* Transfer firmware image */ |
1da177e4 | 993 | for (pos = 0; pos < image_length; ) { |
2742fd88 | 994 | /* Read the next buffer from file */ |
1da177e4 LT |
995 | transfer = image_length - pos; |
996 | if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE) | |
997 | transfer = EDGE_FW_BULK_MAX_PACKET_SIZE; | |
998 | ||
2742fd88 AC |
999 | /* Transfer data */ |
1000 | status = bulk_xfer(serial->serial, &image[pos], | |
1001 | transfer, &done); | |
1da177e4 LT |
1002 | if (status) |
1003 | break; | |
2742fd88 | 1004 | /* Advance buffer pointer */ |
1da177e4 LT |
1005 | pos += done; |
1006 | } | |
1007 | ||
1008 | return status; | |
1009 | } | |
1010 | ||
2742fd88 AC |
1011 | /* FIXME!!! */ |
1012 | static int config_boot_dev(struct usb_device *dev) | |
1da177e4 LT |
1013 | { |
1014 | return 0; | |
1015 | } | |
1016 | ||
2742fd88 AC |
1017 | static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc) |
1018 | { | |
1019 | return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev); | |
1020 | } | |
1021 | ||
1da177e4 LT |
1022 | /** |
1023 | * DownloadTIFirmware - Download run-time operating firmware to the TI5052 | |
2742fd88 | 1024 | * |
1da177e4 LT |
1025 | * This routine downloads the main operating code into the TI5052, using the |
1026 | * boot code already burned into E2PROM or ROM. | |
1027 | */ | |
2742fd88 | 1028 | static int download_fw(struct edgeport_serial *serial) |
1da177e4 LT |
1029 | { |
1030 | struct device *dev = &serial->serial->dev->dev; | |
1031 | int status = 0; | |
1032 | int start_address; | |
1033 | struct edge_ti_manuf_descriptor *ti_manuf_desc; | |
1034 | struct usb_interface_descriptor *interface; | |
1035 | int download_cur_ver; | |
1036 | int download_new_ver; | |
1037 | ||
1038 | /* This routine is entered by both the BOOT mode and the Download mode | |
1039 | * We can determine which code is running by the reading the config | |
1040 | * descriptor and if we have only one bulk pipe it is in boot mode | |
1041 | */ | |
1042 | serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP; | |
1043 | ||
1044 | /* Default to type 2 i2c */ | |
1045 | serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; | |
1046 | ||
2742fd88 | 1047 | status = choose_config(serial->serial->dev); |
1da177e4 LT |
1048 | if (status) |
1049 | return status; | |
1050 | ||
1051 | interface = &serial->serial->interface->cur_altsetting->desc; | |
1052 | if (!interface) { | |
2742fd88 | 1053 | dev_err(dev, "%s - no interface set, error!\n", __func__); |
1da177e4 LT |
1054 | return -ENODEV; |
1055 | } | |
1056 | ||
2742fd88 AC |
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 | |
1060 | * mode | |
1061 | */ | |
1da177e4 LT |
1062 | if (interface->bNumEndpoints > 1) |
1063 | serial->product_info.TiMode = TI_MODE_DOWNLOAD; | |
1064 | else | |
2742fd88 | 1065 | /* Otherwise we will remain in configuring mode */ |
1da177e4 LT |
1066 | serial->product_info.TiMode = TI_MODE_CONFIGURING; |
1067 | ||
1da177e4 LT |
1068 | /********************************************************************/ |
1069 | /* Download Mode */ | |
1070 | /********************************************************************/ | |
1071 | if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { | |
1072 | struct ti_i2c_desc *rom_desc; | |
1073 | ||
9544e833 | 1074 | dbg("%s - RUNNING IN DOWNLOAD MODE", __func__); |
1da177e4 | 1075 | |
2742fd88 | 1076 | status = check_i2c_image(serial); |
1da177e4 | 1077 | if (status) { |
9544e833 | 1078 | dbg("%s - DOWNLOAD MODE -- BAD I2C", __func__); |
1da177e4 LT |
1079 | return status; |
1080 | } | |
2742fd88 | 1081 | |
1da177e4 LT |
1082 | /* Validate Hardware version number |
1083 | * Read Manufacturing Descriptor from TI Based Edgeport | |
1084 | */ | |
2742fd88 | 1085 | ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL); |
1da177e4 | 1086 | if (!ti_manuf_desc) { |
2742fd88 | 1087 | dev_err(dev, "%s - out of memory.\n", __func__); |
1da177e4 LT |
1088 | return -ENOMEM; |
1089 | } | |
2742fd88 | 1090 | status = get_manuf_info(serial, (__u8 *)ti_manuf_desc); |
1da177e4 | 1091 | if (status) { |
2742fd88 | 1092 | kfree(ti_manuf_desc); |
1da177e4 LT |
1093 | return status; |
1094 | } | |
1095 | ||
2742fd88 AC |
1096 | /* Check version number of ION descriptor */ |
1097 | if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { | |
1098 | dbg("%s - Wrong CPU Rev %d (Must be 2)", | |
1099 | __func__, ti_cpu_rev(ti_manuf_desc)); | |
1100 | kfree(ti_manuf_desc); | |
1101 | return -EINVAL; | |
1102 | } | |
1da177e4 | 1103 | |
2742fd88 | 1104 | rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); |
1da177e4 | 1105 | if (!rom_desc) { |
2742fd88 AC |
1106 | dev_err(dev, "%s - out of memory.\n", __func__); |
1107 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1108 | return -ENOMEM; |
1109 | } | |
1110 | ||
2742fd88 AC |
1111 | /* Search for type 2 record (firmware record) */ |
1112 | start_address = get_descriptor_addr(serial, | |
1113 | I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc); | |
1114 | if (start_address != 0) { | |
1da177e4 LT |
1115 | struct ti_i2c_firmware_rec *firmware_version; |
1116 | __u8 record; | |
1117 | ||
2742fd88 AC |
1118 | dbg("%s - Found Type FIRMWARE (Type 2) record", |
1119 | __func__); | |
1da177e4 | 1120 | |
2742fd88 AC |
1121 | firmware_version = kmalloc(sizeof(*firmware_version), |
1122 | GFP_KERNEL); | |
1da177e4 | 1123 | if (!firmware_version) { |
2742fd88 AC |
1124 | dev_err(dev, "%s - out of memory.\n", __func__); |
1125 | kfree(rom_desc); | |
1126 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1127 | return -ENOMEM; |
1128 | } | |
1129 | ||
2742fd88 AC |
1130 | /* Validate version number |
1131 | * Read the descriptor data | |
1132 | */ | |
1133 | status = read_rom(serial, start_address + | |
1134 | sizeof(struct ti_i2c_desc), | |
1da177e4 LT |
1135 | sizeof(struct ti_i2c_firmware_rec), |
1136 | (__u8 *)firmware_version); | |
1137 | if (status) { | |
2742fd88 AC |
1138 | kfree(firmware_version); |
1139 | kfree(rom_desc); | |
1140 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1141 | return status; |
1142 | } | |
1143 | ||
2742fd88 AC |
1144 | /* Check version number of download with current |
1145 | version in I2c */ | |
1146 | download_cur_ver = (firmware_version->Ver_Major << 8) + | |
1da177e4 | 1147 | (firmware_version->Ver_Minor); |
d12b219a JS |
1148 | download_new_ver = (OperationalMajorVersion << 8) + |
1149 | (OperationalMinorVersion); | |
1da177e4 | 1150 | |
2742fd88 AC |
1151 | dbg("%s - >> FW Versions Device %d.%d Driver %d.%d", |
1152 | __func__, | |
1153 | firmware_version->Ver_Major, | |
1154 | firmware_version->Ver_Minor, | |
1155 | OperationalMajorVersion, | |
1156 | OperationalMinorVersion); | |
1da177e4 | 1157 | |
2742fd88 AC |
1158 | /* Check if we have an old version in the I2C and |
1159 | update if necessary */ | |
1da177e4 | 1160 | if (download_cur_ver != download_new_ver) { |
2742fd88 AC |
1161 | dbg("%s - Update I2C dld from %d.%d to %d.%d", |
1162 | __func__, | |
1163 | firmware_version->Ver_Major, | |
1164 | firmware_version->Ver_Minor, | |
1165 | OperationalMajorVersion, | |
1166 | OperationalMinorVersion); | |
1167 | ||
1168 | /* In order to update the I2C firmware we must | |
1169 | * change the type 2 record to type 0xF2. This | |
1170 | * will force the UMP to come up in Boot Mode. | |
1171 | * Then while in boot mode, the driver will | |
1172 | * download the latest firmware (padded to | |
1173 | * 15.5k) into the UMP ram. Finally when the | |
1174 | * device comes back up in download mode the | |
1175 | * driver will cause the new firmware to be | |
1176 | * copied from the UMP Ram to I2C and the | |
1177 | * firmware will update the record type from | |
1178 | * 0xf2 to 0x02. | |
1179 | */ | |
1da177e4 LT |
1180 | record = I2C_DESC_TYPE_FIRMWARE_BLANK; |
1181 | ||
2742fd88 AC |
1182 | /* Change the I2C Firmware record type to |
1183 | 0xf2 to trigger an update */ | |
1184 | status = write_rom(serial, start_address, | |
1185 | sizeof(record), &record); | |
1da177e4 | 1186 | if (status) { |
2742fd88 AC |
1187 | kfree(firmware_version); |
1188 | kfree(rom_desc); | |
1189 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1190 | return status; |
1191 | } | |
1192 | ||
2742fd88 AC |
1193 | /* verify the write -- must do this in order |
1194 | * for write to complete before we do the | |
1195 | * hardware reset | |
1196 | */ | |
1197 | status = read_rom(serial, | |
1da177e4 LT |
1198 | start_address, |
1199 | sizeof(record), | |
1200 | &record); | |
1da177e4 | 1201 | if (status) { |
2742fd88 AC |
1202 | kfree(firmware_version); |
1203 | kfree(rom_desc); | |
1204 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1205 | return status; |
1206 | } | |
1207 | ||
1208 | if (record != I2C_DESC_TYPE_FIRMWARE_BLANK) { | |
2742fd88 AC |
1209 | dev_err(dev, |
1210 | "%s - error resetting device\n", | |
1211 | __func__); | |
1212 | kfree(firmware_version); | |
1213 | kfree(rom_desc); | |
1214 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1215 | return -ENODEV; |
1216 | } | |
1217 | ||
2742fd88 | 1218 | dbg("%s - HARDWARE RESET", __func__); |
1da177e4 | 1219 | |
2742fd88 AC |
1220 | /* Reset UMP -- Back to BOOT MODE */ |
1221 | status = ti_vsend_sync(serial->serial->dev, | |
1222 | UMPC_HARDWARE_RESET, | |
1223 | 0, 0, NULL, 0); | |
1da177e4 | 1224 | |
2742fd88 AC |
1225 | dbg("%s - HARDWARE RESET return %d", |
1226 | __func__, status); | |
1da177e4 LT |
1227 | |
1228 | /* return an error on purpose. */ | |
2742fd88 AC |
1229 | kfree(firmware_version); |
1230 | kfree(rom_desc); | |
1231 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1232 | return -ENODEV; |
1233 | } | |
2742fd88 | 1234 | kfree(firmware_version); |
1da177e4 | 1235 | } |
2742fd88 AC |
1236 | /* Search for type 0xF2 record (firmware blank record) */ |
1237 | else if ((start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) { | |
1238 | #define HEADER_SIZE (sizeof(struct ti_i2c_desc) + \ | |
1239 | sizeof(struct ti_i2c_firmware_rec)) | |
1da177e4 LT |
1240 | __u8 *header; |
1241 | __u8 *vheader; | |
1242 | ||
2742fd88 | 1243 | header = kmalloc(HEADER_SIZE, GFP_KERNEL); |
1da177e4 | 1244 | if (!header) { |
2742fd88 AC |
1245 | dev_err(dev, "%s - out of memory.\n", __func__); |
1246 | kfree(rom_desc); | |
1247 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1248 | return -ENOMEM; |
1249 | } | |
2742fd88 AC |
1250 | |
1251 | vheader = kmalloc(HEADER_SIZE, GFP_KERNEL); | |
1da177e4 | 1252 | if (!vheader) { |
2742fd88 AC |
1253 | dev_err(dev, "%s - out of memory.\n", __func__); |
1254 | kfree(header); | |
1255 | kfree(rom_desc); | |
1256 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1257 | return -ENOMEM; |
1258 | } | |
2742fd88 AC |
1259 | |
1260 | dbg("%s - Found Type BLANK FIRMWARE (Type F2) record", | |
1261 | __func__); | |
1262 | ||
1263 | /* | |
1264 | * In order to update the I2C firmware we must change | |
1265 | * the type 2 record to type 0xF2. This will force the | |
1266 | * UMP to come up in Boot Mode. Then while in boot | |
1267 | * mode, the driver will download the latest firmware | |
1268 | * (padded to 15.5k) into the UMP ram. Finally when the | |
1269 | * device comes back up in download mode the driver | |
1270 | * will cause the new firmware to be copied from the | |
1271 | * UMP Ram to I2C and the firmware will update the | |
1272 | * record type from 0xf2 to 0x02. | |
1273 | */ | |
1274 | status = build_i2c_fw_hdr(header, dev); | |
1da177e4 | 1275 | if (status) { |
2742fd88 AC |
1276 | kfree(vheader); |
1277 | kfree(header); | |
1278 | kfree(rom_desc); | |
1279 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1280 | return status; |
1281 | } | |
1282 | ||
2742fd88 AC |
1283 | /* Update I2C with type 0xf2 record with correct |
1284 | size and checksum */ | |
1285 | status = write_rom(serial, | |
1da177e4 LT |
1286 | start_address, |
1287 | HEADER_SIZE, | |
1288 | header); | |
1289 | if (status) { | |
2742fd88 AC |
1290 | kfree(vheader); |
1291 | kfree(header); | |
1292 | kfree(rom_desc); | |
1293 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1294 | return status; |
1295 | } | |
1296 | ||
2742fd88 AC |
1297 | /* verify the write -- must do this in order for |
1298 | write to complete before we do the hardware reset */ | |
1299 | status = read_rom(serial, start_address, | |
1300 | HEADER_SIZE, vheader); | |
1da177e4 LT |
1301 | |
1302 | if (status) { | |
2742fd88 AC |
1303 | dbg("%s - can't read header back", __func__); |
1304 | kfree(vheader); | |
1305 | kfree(header); | |
1306 | kfree(rom_desc); | |
1307 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1308 | return status; |
1309 | } | |
1310 | if (memcmp(vheader, header, HEADER_SIZE)) { | |
2742fd88 AC |
1311 | dbg("%s - write download record failed", |
1312 | __func__); | |
1313 | kfree(vheader); | |
1314 | kfree(header); | |
1315 | kfree(rom_desc); | |
1316 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1317 | return status; |
1318 | } | |
1319 | ||
2742fd88 AC |
1320 | kfree(vheader); |
1321 | kfree(header); | |
1da177e4 | 1322 | |
2742fd88 | 1323 | dbg("%s - Start firmware update", __func__); |
1da177e4 | 1324 | |
2742fd88 AC |
1325 | /* Tell firmware to copy download image into I2C */ |
1326 | status = ti_vsend_sync(serial->serial->dev, | |
1327 | UMPC_COPY_DNLD_TO_I2C, 0, 0, NULL, 0); | |
1da177e4 | 1328 | |
2742fd88 | 1329 | dbg("%s - Update complete 0x%x", __func__, status); |
1da177e4 | 1330 | if (status) { |
2742fd88 AC |
1331 | dev_err(dev, |
1332 | "%s - UMPC_COPY_DNLD_TO_I2C failed\n", | |
1333 | __func__); | |
1334 | kfree(rom_desc); | |
1335 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1336 | return status; |
1337 | } | |
1338 | } | |
1339 | ||
1340 | // The device is running the download code | |
2742fd88 AC |
1341 | kfree(rom_desc); |
1342 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1343 | return 0; |
1344 | } | |
1345 | ||
1346 | /********************************************************************/ | |
1347 | /* Boot Mode */ | |
1348 | /********************************************************************/ | |
9544e833 | 1349 | dbg("%s - RUNNING IN BOOT MODE", __func__); |
1da177e4 | 1350 | |
2742fd88 AC |
1351 | /* Configure the TI device so we can use the BULK pipes for download */ |
1352 | status = config_boot_dev(serial->serial->dev); | |
1da177e4 LT |
1353 | if (status) |
1354 | return status; | |
1355 | ||
2742fd88 AC |
1356 | if (le16_to_cpu(serial->serial->dev->descriptor.idVendor) |
1357 | != USB_VENDOR_ID_ION) { | |
1358 | dbg("%s - VID = 0x%x", __func__, | |
1da177e4 LT |
1359 | le16_to_cpu(serial->serial->dev->descriptor.idVendor)); |
1360 | serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; | |
2742fd88 | 1361 | goto stayinbootmode; |
1da177e4 LT |
1362 | } |
1363 | ||
2742fd88 AC |
1364 | /* We have an ION device (I2c Must be programmed) |
1365 | Determine I2C image type */ | |
1366 | if (i2c_type_bootmode(serial)) | |
1367 | goto stayinbootmode; | |
1da177e4 | 1368 | |
2742fd88 AC |
1369 | /* Check for ION Vendor ID and that the I2C is valid */ |
1370 | if (!check_i2c_image(serial)) { | |
1da177e4 LT |
1371 | struct ti_i2c_image_header *header; |
1372 | int i; | |
1373 | __u8 cs = 0; | |
1374 | __u8 *buffer; | |
1375 | int buffer_size; | |
d12b219a JS |
1376 | int err; |
1377 | const struct firmware *fw; | |
1378 | const char *fw_name = "edgeport/down3.bin"; | |
1da177e4 LT |
1379 | |
1380 | /* Validate Hardware version number | |
1381 | * Read Manufacturing Descriptor from TI Based Edgeport | |
1382 | */ | |
2742fd88 | 1383 | ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL); |
1da177e4 | 1384 | if (!ti_manuf_desc) { |
2742fd88 | 1385 | dev_err(dev, "%s - out of memory.\n", __func__); |
1da177e4 LT |
1386 | return -ENOMEM; |
1387 | } | |
2742fd88 | 1388 | status = get_manuf_info(serial, (__u8 *)ti_manuf_desc); |
1da177e4 | 1389 | if (status) { |
2742fd88 AC |
1390 | kfree(ti_manuf_desc); |
1391 | goto stayinbootmode; | |
1da177e4 LT |
1392 | } |
1393 | ||
2742fd88 AC |
1394 | /* Check for version 2 */ |
1395 | if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { | |
1396 | dbg("%s - Wrong CPU Rev %d (Must be 2)", | |
1397 | __func__, ti_cpu_rev(ti_manuf_desc)); | |
1398 | kfree(ti_manuf_desc); | |
1399 | goto stayinbootmode; | |
1da177e4 LT |
1400 | } |
1401 | ||
2742fd88 | 1402 | kfree(ti_manuf_desc); |
1da177e4 | 1403 | |
1da177e4 | 1404 | /* |
2742fd88 AC |
1405 | * In order to update the I2C firmware we must change the type |
1406 | * 2 record to type 0xF2. This will force the UMP to come up | |
1407 | * in Boot Mode. Then while in boot mode, the driver will | |
1408 | * download the latest firmware (padded to 15.5k) into the | |
1409 | * UMP ram. Finally when the device comes back up in download | |
1410 | * mode the driver will cause the new firmware to be copied | |
1411 | * from the UMP Ram to I2C and the firmware will update the | |
1412 | * record type from 0xf2 to 0x02. | |
1413 | * | |
1da177e4 LT |
1414 | * Do we really have to copy the whole firmware image, |
1415 | * or could we do this in place! | |
1416 | */ | |
1417 | ||
2742fd88 AC |
1418 | /* Allocate a 15.5k buffer + 3 byte header */ |
1419 | buffer_size = (((1024 * 16) - 512) + | |
1420 | sizeof(struct ti_i2c_image_header)); | |
1421 | buffer = kmalloc(buffer_size, GFP_KERNEL); | |
1da177e4 | 1422 | if (!buffer) { |
2742fd88 | 1423 | dev_err(dev, "%s - out of memory\n", __func__); |
1da177e4 LT |
1424 | return -ENOMEM; |
1425 | } | |
2742fd88 AC |
1426 | |
1427 | /* Initialize the buffer to 0xff (pad the buffer) */ | |
1428 | memset(buffer, 0xff, buffer_size); | |
1da177e4 | 1429 | |
d12b219a JS |
1430 | err = request_firmware(&fw, fw_name, dev); |
1431 | if (err) { | |
1432 | printk(KERN_ERR "Failed to load image \"%s\" err %d\n", | |
1433 | fw_name, err); | |
1434 | kfree(buffer); | |
1435 | return err; | |
1436 | } | |
1437 | memcpy(buffer, &fw->data[4], fw->size - 4); | |
1438 | release_firmware(fw); | |
1da177e4 | 1439 | |
2742fd88 AC |
1440 | for (i = sizeof(struct ti_i2c_image_header); |
1441 | i < buffer_size; i++) { | |
1da177e4 LT |
1442 | cs = (__u8)(cs + buffer[i]); |
1443 | } | |
2742fd88 | 1444 | |
1da177e4 | 1445 | header = (struct ti_i2c_image_header *)buffer; |
2742fd88 AC |
1446 | |
1447 | /* update length and checksum after padding */ | |
1448 | header->Length = cpu_to_le16((__u16)(buffer_size - | |
1449 | sizeof(struct ti_i2c_image_header))); | |
1da177e4 LT |
1450 | header->CheckSum = cs; |
1451 | ||
2742fd88 AC |
1452 | /* Download the operational code */ |
1453 | dbg("%s - Downloading operational code image (TI UMP)", | |
1454 | __func__); | |
1455 | status = download_code(serial, buffer, buffer_size); | |
1da177e4 | 1456 | |
2742fd88 | 1457 | kfree(buffer); |
1da177e4 LT |
1458 | |
1459 | if (status) { | |
2742fd88 AC |
1460 | dbg("%s - Error downloading operational code image", |
1461 | __func__); | |
1da177e4 LT |
1462 | return status; |
1463 | } | |
1464 | ||
2742fd88 | 1465 | /* Device will reboot */ |
1da177e4 LT |
1466 | serial->product_info.TiMode = TI_MODE_TRANSITIONING; |
1467 | ||
2742fd88 AC |
1468 | dbg("%s - Download successful -- Device rebooting...", |
1469 | __func__); | |
1da177e4 LT |
1470 | |
1471 | /* return an error on purpose */ | |
1472 | return -ENODEV; | |
1473 | } | |
1474 | ||
2742fd88 AC |
1475 | stayinbootmode: |
1476 | /* Eprom is invalid or blank stay in boot mode */ | |
9544e833 | 1477 | dbg("%s - STAYING IN BOOT MODE", __func__); |
1da177e4 LT |
1478 | serial->product_info.TiMode = TI_MODE_BOOT; |
1479 | ||
1480 | return 0; | |
1481 | } | |
1482 | ||
1483 | ||
2742fd88 | 1484 | static int ti_do_config(struct edgeport_port *port, int feature, int on) |
1da177e4 LT |
1485 | { |
1486 | int port_number = port->port->number - port->port->serial->minor; | |
2742fd88 AC |
1487 | on = !!on; /* 1 or 0 not bitmask */ |
1488 | return send_cmd(port->port->serial->dev, | |
1489 | feature, (__u8)(UMPM_UART1_PORT + port_number), | |
1490 | on, NULL, 0); | |
1da177e4 LT |
1491 | } |
1492 | ||
1da177e4 | 1493 | |
2742fd88 | 1494 | static int restore_mcr(struct edgeport_port *port, __u8 mcr) |
1da177e4 LT |
1495 | { |
1496 | int status = 0; | |
1497 | ||
2742fd88 | 1498 | dbg("%s - %x", __func__, mcr); |
1da177e4 | 1499 | |
2742fd88 | 1500 | status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR); |
1da177e4 LT |
1501 | if (status) |
1502 | return status; | |
2742fd88 | 1503 | status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS); |
1da177e4 LT |
1504 | if (status) |
1505 | return status; | |
2742fd88 | 1506 | return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK); |
1da177e4 LT |
1507 | } |
1508 | ||
1da177e4 | 1509 | /* Convert TI LSR to standard UART flags */ |
2742fd88 | 1510 | static __u8 map_line_status(__u8 ti_lsr) |
1da177e4 LT |
1511 | { |
1512 | __u8 lsr = 0; | |
1513 | ||
1514 | #define MAP_FLAG(flagUmp, flagUart) \ | |
1515 | if (ti_lsr & flagUmp) \ | |
1516 | lsr |= flagUart; | |
1517 | ||
1518 | MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */ | |
1519 | MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */ | |
1520 | MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */ | |
1521 | MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */ | |
2742fd88 AC |
1522 | MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* rx data available */ |
1523 | MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* tx hold reg empty */ | |
1da177e4 LT |
1524 | |
1525 | #undef MAP_FLAG | |
1526 | ||
1527 | return lsr; | |
1528 | } | |
1529 | ||
2742fd88 | 1530 | static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr) |
1da177e4 LT |
1531 | { |
1532 | struct async_icount *icount; | |
1533 | struct tty_struct *tty; | |
1534 | ||
2742fd88 | 1535 | dbg("%s - %02x", __func__, msr); |
1da177e4 | 1536 | |
2742fd88 AC |
1537 | if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | |
1538 | EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { | |
1da177e4 LT |
1539 | icount = &edge_port->icount; |
1540 | ||
1541 | /* update input line counters */ | |
1542 | if (msr & EDGEPORT_MSR_DELTA_CTS) | |
1543 | icount->cts++; | |
1544 | if (msr & EDGEPORT_MSR_DELTA_DSR) | |
1545 | icount->dsr++; | |
1546 | if (msr & EDGEPORT_MSR_DELTA_CD) | |
1547 | icount->dcd++; | |
1548 | if (msr & EDGEPORT_MSR_DELTA_RI) | |
1549 | icount->rng++; | |
2742fd88 | 1550 | wake_up_interruptible(&edge_port->delta_msr_wait); |
1da177e4 LT |
1551 | } |
1552 | ||
1553 | /* Save the new modem status */ | |
1554 | edge_port->shadow_msr = msr & 0xf0; | |
1555 | ||
4a90f09b | 1556 | tty = tty_port_tty_get(&edge_port->port->port); |
1da177e4 LT |
1557 | /* handle CTS flow control */ |
1558 | if (tty && C_CRTSCTS(tty)) { | |
1559 | if (msr & EDGEPORT_MSR_CTS) { | |
1560 | tty->hw_stopped = 0; | |
1561 | tty_wakeup(tty); | |
1562 | } else { | |
1563 | tty->hw_stopped = 1; | |
1564 | } | |
1565 | } | |
4a90f09b | 1566 | tty_kref_put(tty); |
1da177e4 LT |
1567 | |
1568 | return; | |
1569 | } | |
1570 | ||
2742fd88 AC |
1571 | static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data, |
1572 | __u8 lsr, __u8 data) | |
1da177e4 LT |
1573 | { |
1574 | struct async_icount *icount; | |
2742fd88 AC |
1575 | __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR | |
1576 | LSR_FRM_ERR | LSR_BREAK)); | |
4a90f09b | 1577 | struct tty_struct *tty; |
1da177e4 | 1578 | |
2742fd88 | 1579 | dbg("%s - %02x", __func__, new_lsr); |
1da177e4 LT |
1580 | |
1581 | edge_port->shadow_lsr = lsr; | |
1582 | ||
2742fd88 | 1583 | if (new_lsr & LSR_BREAK) |
1da177e4 LT |
1584 | /* |
1585 | * Parity and Framing errors only count if they | |
1586 | * occur exclusive of a break being received. | |
1587 | */ | |
1588 | new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK); | |
1da177e4 LT |
1589 | |
1590 | /* Place LSR data byte into Rx buffer */ | |
4a90f09b AC |
1591 | if (lsr_data) { |
1592 | tty = tty_port_tty_get(&edge_port->port->port); | |
1593 | if (tty) { | |
1594 | edge_tty_recv(&edge_port->port->dev, tty, &data, 1); | |
1595 | tty_kref_put(tty); | |
1596 | } | |
1597 | } | |
1da177e4 LT |
1598 | |
1599 | /* update input line counters */ | |
1600 | icount = &edge_port->icount; | |
1601 | if (new_lsr & LSR_BREAK) | |
1602 | icount->brk++; | |
1603 | if (new_lsr & LSR_OVER_ERR) | |
1604 | icount->overrun++; | |
1605 | if (new_lsr & LSR_PAR_ERR) | |
1606 | icount->parity++; | |
1607 | if (new_lsr & LSR_FRM_ERR) | |
1608 | icount->frame++; | |
1609 | } | |
1610 | ||
1611 | ||
2742fd88 | 1612 | static void edge_interrupt_callback(struct urb *urb) |
1da177e4 | 1613 | { |
cdc97792 | 1614 | struct edgeport_serial *edge_serial = urb->context; |
1da177e4 LT |
1615 | struct usb_serial_port *port; |
1616 | struct edgeport_port *edge_port; | |
1617 | unsigned char *data = urb->transfer_buffer; | |
1618 | int length = urb->actual_length; | |
1619 | int port_number; | |
1620 | int function; | |
ee337c21 | 1621 | int retval; |
1da177e4 LT |
1622 | __u8 lsr; |
1623 | __u8 msr; | |
ee337c21 | 1624 | int status = urb->status; |
1da177e4 | 1625 | |
441b62c1 | 1626 | dbg("%s", __func__); |
1da177e4 | 1627 | |
ee337c21 | 1628 | switch (status) { |
1da177e4 LT |
1629 | case 0: |
1630 | /* success */ | |
1631 | break; | |
1632 | case -ECONNRESET: | |
1633 | case -ENOENT: | |
1634 | case -ESHUTDOWN: | |
1635 | /* this urb is terminated, clean up */ | |
ee337c21 | 1636 | dbg("%s - urb shutting down with status: %d", |
441b62c1 | 1637 | __func__, status); |
1da177e4 LT |
1638 | return; |
1639 | default: | |
ee337c21 | 1640 | dev_err(&urb->dev->dev, "%s - nonzero urb status received: " |
441b62c1 | 1641 | "%d\n", __func__, status); |
1da177e4 LT |
1642 | goto exit; |
1643 | } | |
1644 | ||
1645 | if (!length) { | |
2742fd88 | 1646 | dbg("%s - no data in urb", __func__); |
1da177e4 LT |
1647 | goto exit; |
1648 | } | |
2742fd88 AC |
1649 | |
1650 | usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, | |
1651 | __func__, length, data); | |
1652 | ||
1da177e4 | 1653 | if (length != 2) { |
2742fd88 AC |
1654 | dbg("%s - expecting packet of size 2, got %d", |
1655 | __func__, length); | |
1da177e4 LT |
1656 | goto exit; |
1657 | } | |
1658 | ||
2742fd88 AC |
1659 | port_number = TIUMP_GET_PORT_FROM_CODE(data[0]); |
1660 | function = TIUMP_GET_FUNC_FROM_CODE(data[0]); | |
1661 | dbg("%s - port_number %d, function %d, info 0x%x", | |
441b62c1 | 1662 | __func__, port_number, function, data[1]); |
1da177e4 LT |
1663 | port = edge_serial->serial->port[port_number]; |
1664 | edge_port = usb_get_serial_port_data(port); | |
1665 | if (!edge_port) { | |
2742fd88 | 1666 | dbg("%s - edge_port not found", __func__); |
1da177e4 LT |
1667 | return; |
1668 | } | |
1669 | switch (function) { | |
1670 | case TIUMP_INTERRUPT_CODE_LSR: | |
2742fd88 | 1671 | lsr = map_line_status(data[1]); |
1da177e4 | 1672 | if (lsr & UMP_UART_LSR_DATA_MASK) { |
2742fd88 AC |
1673 | /* Save the LSR event for bulk read |
1674 | completion routine */ | |
1675 | dbg("%s - LSR Event Port %u LSR Status = %02x", | |
441b62c1 | 1676 | __func__, port_number, lsr); |
1da177e4 LT |
1677 | edge_port->lsr_event = 1; |
1678 | edge_port->lsr_mask = lsr; | |
1679 | } else { | |
2742fd88 | 1680 | dbg("%s - ===== Port %d LSR Status = %02x ======", |
441b62c1 | 1681 | __func__, port_number, lsr); |
2742fd88 | 1682 | handle_new_lsr(edge_port, 0, lsr, 0); |
1da177e4 LT |
1683 | } |
1684 | break; | |
1685 | ||
2742fd88 | 1686 | case TIUMP_INTERRUPT_CODE_MSR: /* MSR */ |
1da177e4 LT |
1687 | /* Copy MSR from UMP */ |
1688 | msr = data[1]; | |
2742fd88 | 1689 | dbg("%s - ===== Port %u MSR Status = %02x ======\n", |
441b62c1 | 1690 | __func__, port_number, msr); |
2742fd88 | 1691 | handle_new_msr(edge_port, msr); |
1da177e4 LT |
1692 | break; |
1693 | ||
1694 | default: | |
2742fd88 AC |
1695 | dev_err(&urb->dev->dev, |
1696 | "%s - Unknown Interrupt code from UMP %x\n", | |
1697 | __func__, data[1]); | |
1da177e4 | 1698 | break; |
2742fd88 | 1699 | |
1da177e4 LT |
1700 | } |
1701 | ||
1702 | exit: | |
2742fd88 | 1703 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
ee337c21 | 1704 | if (retval) |
2742fd88 AC |
1705 | dev_err(&urb->dev->dev, |
1706 | "%s - usb_submit_urb failed with result %d\n", | |
441b62c1 | 1707 | __func__, retval); |
1da177e4 LT |
1708 | } |
1709 | ||
2742fd88 | 1710 | static void edge_bulk_in_callback(struct urb *urb) |
1da177e4 | 1711 | { |
cdc97792 | 1712 | struct edgeport_port *edge_port = urb->context; |
1da177e4 LT |
1713 | unsigned char *data = urb->transfer_buffer; |
1714 | struct tty_struct *tty; | |
ee337c21 | 1715 | int retval = 0; |
1da177e4 | 1716 | int port_number; |
ee337c21 | 1717 | int status = urb->status; |
1da177e4 | 1718 | |
441b62c1 | 1719 | dbg("%s", __func__); |
1da177e4 | 1720 | |
ee337c21 | 1721 | switch (status) { |
1da177e4 LT |
1722 | case 0: |
1723 | /* success */ | |
1724 | break; | |
1725 | case -ECONNRESET: | |
1726 | case -ENOENT: | |
1727 | case -ESHUTDOWN: | |
1728 | /* this urb is terminated, clean up */ | |
ee337c21 | 1729 | dbg("%s - urb shutting down with status: %d", |
441b62c1 | 1730 | __func__, status); |
1da177e4 LT |
1731 | return; |
1732 | default: | |
2742fd88 AC |
1733 | dev_err(&urb->dev->dev, |
1734 | "%s - nonzero read bulk status received: %d\n", | |
1735 | __func__, status); | |
1da177e4 LT |
1736 | } |
1737 | ||
ee337c21 | 1738 | if (status == -EPIPE) |
1da177e4 LT |
1739 | goto exit; |
1740 | ||
ee337c21 | 1741 | if (status) { |
2742fd88 | 1742 | dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__); |
1da177e4 LT |
1743 | return; |
1744 | } | |
1745 | ||
1746 | port_number = edge_port->port->number - edge_port->port->serial->minor; | |
1747 | ||
1748 | if (edge_port->lsr_event) { | |
1749 | edge_port->lsr_event = 0; | |
2742fd88 | 1750 | dbg("%s ===== Port %u LSR Status = %02x, Data = %02x ======", |
441b62c1 | 1751 | __func__, port_number, edge_port->lsr_mask, *data); |
2742fd88 | 1752 | handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data); |
1da177e4 LT |
1753 | /* Adjust buffer length/pointer */ |
1754 | --urb->actual_length; | |
1755 | ++data; | |
1756 | } | |
1757 | ||
4a90f09b | 1758 | tty = tty_port_tty_get(&edge_port->port->port); |
1da177e4 | 1759 | if (tty && urb->actual_length) { |
2742fd88 AC |
1760 | usb_serial_debug_data(debug, &edge_port->port->dev, |
1761 | __func__, urb->actual_length, data); | |
1762 | if (edge_port->close_pending) | |
1763 | dbg("%s - close pending, dropping data on the floor", | |
1764 | __func__); | |
1765 | else | |
1766 | edge_tty_recv(&edge_port->port->dev, tty, data, | |
1767 | urb->actual_length); | |
1da177e4 LT |
1768 | edge_port->icount.rx += urb->actual_length; |
1769 | } | |
4a90f09b | 1770 | tty_kref_put(tty); |
1da177e4 LT |
1771 | |
1772 | exit: | |
1773 | /* continue read unless stopped */ | |
1774 | spin_lock(&edge_port->ep_lock); | |
1775 | if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) { | |
1776 | urb->dev = edge_port->port->serial->dev; | |
ee337c21 | 1777 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
1da177e4 LT |
1778 | } else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING) { |
1779 | edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED; | |
1780 | } | |
1781 | spin_unlock(&edge_port->ep_lock); | |
ee337c21 | 1782 | if (retval) |
2742fd88 AC |
1783 | dev_err(&urb->dev->dev, |
1784 | "%s - usb_submit_urb failed with result %d\n", | |
441b62c1 | 1785 | __func__, retval); |
1da177e4 LT |
1786 | } |
1787 | ||
2742fd88 AC |
1788 | static void edge_tty_recv(struct device *dev, struct tty_struct *tty, |
1789 | unsigned char *data, int length) | |
1da177e4 | 1790 | { |
2742fd88 | 1791 | int queued; |
1da177e4 | 1792 | |
2742fd88 AC |
1793 | tty_buffer_request_room(tty, length); |
1794 | queued = tty_insert_flip_string(tty, data, length); | |
1795 | if (queued < length) | |
1796 | dev_err(dev, "%s - dropping data, %d bytes lost\n", | |
1797 | __func__, length - queued); | |
1da177e4 LT |
1798 | tty_flip_buffer_push(tty); |
1799 | } | |
1800 | ||
2742fd88 | 1801 | static void edge_bulk_out_callback(struct urb *urb) |
1da177e4 | 1802 | { |
cdc97792 | 1803 | struct usb_serial_port *port = urb->context; |
1da177e4 | 1804 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
ee337c21 | 1805 | int status = urb->status; |
4a90f09b | 1806 | struct tty_struct *tty; |
1da177e4 | 1807 | |
2742fd88 | 1808 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1809 | |
1810 | edge_port->ep_write_urb_in_use = 0; | |
1811 | ||
ee337c21 | 1812 | switch (status) { |
1da177e4 LT |
1813 | case 0: |
1814 | /* success */ | |
1815 | break; | |
1816 | case -ECONNRESET: | |
1817 | case -ENOENT: | |
1818 | case -ESHUTDOWN: | |
1819 | /* this urb is terminated, clean up */ | |
ee337c21 | 1820 | dbg("%s - urb shutting down with status: %d", |
441b62c1 | 1821 | __func__, status); |
1da177e4 LT |
1822 | return; |
1823 | default: | |
ee337c21 | 1824 | dev_err(&urb->dev->dev, "%s - nonzero write bulk status " |
441b62c1 | 1825 | "received: %d\n", __func__, status); |
1da177e4 LT |
1826 | } |
1827 | ||
1828 | /* send any buffered data */ | |
4a90f09b AC |
1829 | tty = tty_port_tty_get(&port->port); |
1830 | edge_send(tty); | |
1831 | tty_kref_put(tty); | |
1da177e4 LT |
1832 | } |
1833 | ||
a509a7e4 | 1834 | static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) |
1da177e4 LT |
1835 | { |
1836 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1837 | struct edgeport_serial *edge_serial; | |
1838 | struct usb_device *dev; | |
1839 | struct urb *urb; | |
1840 | int port_number; | |
1841 | int status; | |
1842 | u16 open_settings; | |
1843 | u8 transaction_timeout; | |
1844 | ||
441b62c1 | 1845 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1846 | |
1847 | if (edge_port == NULL) | |
1848 | return -ENODEV; | |
1849 | ||
1da177e4 LT |
1850 | port_number = port->number - port->serial->minor; |
1851 | switch (port_number) { | |
2742fd88 AC |
1852 | case 0: |
1853 | edge_port->uart_base = UMPMEM_BASE_UART1; | |
1854 | edge_port->dma_address = UMPD_OEDB1_ADDRESS; | |
1855 | break; | |
1856 | case 1: | |
1857 | edge_port->uart_base = UMPMEM_BASE_UART2; | |
1858 | edge_port->dma_address = UMPD_OEDB2_ADDRESS; | |
1859 | break; | |
1860 | default: | |
1861 | dev_err(&port->dev, "Unknown port number!!!\n"); | |
1862 | return -ENODEV; | |
1da177e4 LT |
1863 | } |
1864 | ||
2742fd88 AC |
1865 | dbg("%s - port_number = %d, uart_base = %04x, dma_address = %04x", |
1866 | __func__, port_number, edge_port->uart_base, | |
1867 | edge_port->dma_address); | |
1da177e4 LT |
1868 | |
1869 | dev = port->serial->dev; | |
1870 | ||
2742fd88 AC |
1871 | memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount)); |
1872 | init_waitqueue_head(&edge_port->delta_msr_wait); | |
1da177e4 LT |
1873 | |
1874 | /* turn off loopback */ | |
2742fd88 | 1875 | status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0); |
1da177e4 | 1876 | if (status) { |
2742fd88 AC |
1877 | dev_err(&port->dev, |
1878 | "%s - cannot send clear loopback command, %d\n", | |
441b62c1 | 1879 | __func__, status); |
1da177e4 LT |
1880 | return status; |
1881 | } | |
2742fd88 | 1882 | |
1da177e4 | 1883 | /* set up the port settings */ |
95da310e | 1884 | if (tty) |
4a90f09b | 1885 | edge_set_termios(tty, port, tty->termios); |
1da177e4 LT |
1886 | |
1887 | /* open up the port */ | |
1888 | ||
1889 | /* milliseconds to timeout for DMA transfer */ | |
1890 | transaction_timeout = 2; | |
1891 | ||
2742fd88 AC |
1892 | edge_port->ump_read_timeout = |
1893 | max(20, ((transaction_timeout * 3) / 2)); | |
1da177e4 | 1894 | |
2742fd88 AC |
1895 | /* milliseconds to timeout for DMA transfer */ |
1896 | open_settings = (u8)(UMP_DMA_MODE_CONTINOUS | | |
1897 | UMP_PIPE_TRANS_TIMEOUT_ENA | | |
1da177e4 LT |
1898 | (transaction_timeout << 2)); |
1899 | ||
2742fd88 | 1900 | dbg("%s - Sending UMPC_OPEN_PORT", __func__); |
1da177e4 LT |
1901 | |
1902 | /* Tell TI to open and start the port */ | |
2742fd88 AC |
1903 | status = send_cmd(dev, UMPC_OPEN_PORT, |
1904 | (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0); | |
1da177e4 | 1905 | if (status) { |
2742fd88 AC |
1906 | dev_err(&port->dev, "%s - cannot send open command, %d\n", |
1907 | __func__, status); | |
1da177e4 LT |
1908 | return status; |
1909 | } | |
1910 | ||
1911 | /* Start the DMA? */ | |
2742fd88 AC |
1912 | status = send_cmd(dev, UMPC_START_PORT, |
1913 | (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0); | |
1da177e4 | 1914 | if (status) { |
2742fd88 AC |
1915 | dev_err(&port->dev, "%s - cannot send start DMA command, %d\n", |
1916 | __func__, status); | |
1da177e4 LT |
1917 | return status; |
1918 | } | |
1919 | ||
1920 | /* Clear TX and RX buffers in UMP */ | |
2742fd88 | 1921 | status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN); |
1da177e4 | 1922 | if (status) { |
2742fd88 AC |
1923 | dev_err(&port->dev, |
1924 | "%s - cannot send clear buffers command, %d\n", | |
1925 | __func__, status); | |
1da177e4 LT |
1926 | return status; |
1927 | } | |
1928 | ||
1929 | /* Read Initial MSR */ | |
2742fd88 AC |
1930 | status = ti_vread_sync(dev, UMPC_READ_MSR, 0, |
1931 | (__u16)(UMPM_UART1_PORT + port_number), | |
1932 | &edge_port->shadow_msr, 1); | |
1da177e4 | 1933 | if (status) { |
2742fd88 AC |
1934 | dev_err(&port->dev, "%s - cannot send read MSR command, %d\n", |
1935 | __func__, status); | |
1da177e4 LT |
1936 | return status; |
1937 | } | |
1938 | ||
2742fd88 AC |
1939 | dbg("ShadowMSR 0x%X", edge_port->shadow_msr); |
1940 | ||
1da177e4 LT |
1941 | /* Set Initial MCR */ |
1942 | edge_port->shadow_mcr = MCR_RTS | MCR_DTR; | |
2742fd88 | 1943 | dbg("ShadowMCR 0x%X", edge_port->shadow_mcr); |
1da177e4 LT |
1944 | |
1945 | edge_serial = edge_port->edge_serial; | |
241ca64f | 1946 | if (mutex_lock_interruptible(&edge_serial->es_lock)) |
1da177e4 LT |
1947 | return -ERESTARTSYS; |
1948 | if (edge_serial->num_ports_open == 0) { | |
2742fd88 | 1949 | /* we are the first port to open, post the interrupt urb */ |
1da177e4 LT |
1950 | urb = edge_serial->serial->port[0]->interrupt_in_urb; |
1951 | if (!urb) { | |
2742fd88 AC |
1952 | dev_err(&port->dev, |
1953 | "%s - no interrupt urb present, exiting\n", | |
1954 | __func__); | |
1da177e4 | 1955 | status = -EINVAL; |
241ca64f | 1956 | goto release_es_lock; |
1da177e4 LT |
1957 | } |
1958 | urb->complete = edge_interrupt_callback; | |
1959 | urb->context = edge_serial; | |
1960 | urb->dev = dev; | |
2742fd88 | 1961 | status = usb_submit_urb(urb, GFP_KERNEL); |
1da177e4 | 1962 | if (status) { |
2742fd88 AC |
1963 | dev_err(&port->dev, |
1964 | "%s - usb_submit_urb failed with value %d\n", | |
1965 | __func__, status); | |
241ca64f | 1966 | goto release_es_lock; |
1da177e4 LT |
1967 | } |
1968 | } | |
1969 | ||
1970 | /* | |
1971 | * reset the data toggle on the bulk endpoints to work around bug in | |
1972 | * host controllers where things get out of sync some times | |
1973 | */ | |
2742fd88 AC |
1974 | usb_clear_halt(dev, port->write_urb->pipe); |
1975 | usb_clear_halt(dev, port->read_urb->pipe); | |
1da177e4 LT |
1976 | |
1977 | /* start up our bulk read urb */ | |
1978 | urb = port->read_urb; | |
1979 | if (!urb) { | |
2742fd88 AC |
1980 | dev_err(&port->dev, "%s - no read urb present, exiting\n", |
1981 | __func__); | |
1da177e4 LT |
1982 | status = -EINVAL; |
1983 | goto unlink_int_urb; | |
1984 | } | |
1985 | edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; | |
1986 | urb->complete = edge_bulk_in_callback; | |
1987 | urb->context = edge_port; | |
1988 | urb->dev = dev; | |
2742fd88 | 1989 | status = usb_submit_urb(urb, GFP_KERNEL); |
1da177e4 | 1990 | if (status) { |
2742fd88 AC |
1991 | dev_err(&port->dev, |
1992 | "%s - read bulk usb_submit_urb failed with value %d\n", | |
1993 | __func__, status); | |
1da177e4 LT |
1994 | goto unlink_int_urb; |
1995 | } | |
1996 | ||
1997 | ++edge_serial->num_ports_open; | |
1998 | ||
441b62c1 | 1999 | dbg("%s - exited", __func__); |
1da177e4 | 2000 | |
241ca64f | 2001 | goto release_es_lock; |
1da177e4 LT |
2002 | |
2003 | unlink_int_urb: | |
2004 | if (edge_port->edge_serial->num_ports_open == 0) | |
2005 | usb_kill_urb(port->serial->port[0]->interrupt_in_urb); | |
241ca64f MK |
2006 | release_es_lock: |
2007 | mutex_unlock(&edge_serial->es_lock); | |
1da177e4 LT |
2008 | return status; |
2009 | } | |
2010 | ||
335f8514 | 2011 | static void edge_close(struct usb_serial_port *port) |
1da177e4 LT |
2012 | { |
2013 | struct edgeport_serial *edge_serial; | |
2014 | struct edgeport_port *edge_port; | |
2015 | int port_number; | |
2016 | int status; | |
2017 | ||
441b62c1 | 2018 | dbg("%s - port %d", __func__, port->number); |
2742fd88 | 2019 | |
1da177e4 LT |
2020 | edge_serial = usb_get_serial_data(port->serial); |
2021 | edge_port = usb_get_serial_port_data(port); | |
2742fd88 | 2022 | if (edge_serial == NULL || edge_port == NULL) |
1da177e4 | 2023 | return; |
2742fd88 AC |
2024 | |
2025 | /* The bulkreadcompletion routine will check | |
1da177e4 LT |
2026 | * this flag and dump add read data */ |
2027 | edge_port->close_pending = 1; | |
2028 | ||
2029 | /* chase the port close and flush */ | |
2742fd88 | 2030 | chase_port(edge_port, (HZ * closing_wait) / 100, 1); |
1da177e4 LT |
2031 | |
2032 | usb_kill_urb(port->read_urb); | |
2033 | usb_kill_urb(port->write_urb); | |
2034 | edge_port->ep_write_urb_in_use = 0; | |
2035 | ||
2036 | /* assuming we can still talk to the device, | |
2037 | * send a close port command to it */ | |
441b62c1 | 2038 | dbg("%s - send umpc_close_port", __func__); |
1da177e4 | 2039 | port_number = port->number - port->serial->minor; |
2742fd88 | 2040 | status = send_cmd(port->serial->dev, |
1da177e4 LT |
2041 | UMPC_CLOSE_PORT, |
2042 | (__u8)(UMPM_UART1_PORT + port_number), | |
2043 | 0, | |
2044 | NULL, | |
2045 | 0); | |
241ca64f | 2046 | mutex_lock(&edge_serial->es_lock); |
1da177e4 LT |
2047 | --edge_port->edge_serial->num_ports_open; |
2048 | if (edge_port->edge_serial->num_ports_open <= 0) { | |
2049 | /* last port is now closed, let's shut down our interrupt urb */ | |
2050 | usb_kill_urb(port->serial->port[0]->interrupt_in_urb); | |
2051 | edge_port->edge_serial->num_ports_open = 0; | |
2052 | } | |
241ca64f | 2053 | mutex_unlock(&edge_serial->es_lock); |
1da177e4 LT |
2054 | edge_port->close_pending = 0; |
2055 | ||
441b62c1 | 2056 | dbg("%s - exited", __func__); |
1da177e4 LT |
2057 | } |
2058 | ||
95da310e AC |
2059 | static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, |
2060 | const unsigned char *data, int count) | |
1da177e4 LT |
2061 | { |
2062 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
2063 | unsigned long flags; | |
2064 | ||
441b62c1 | 2065 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
2066 | |
2067 | if (count == 0) { | |
441b62c1 | 2068 | dbg("%s - write request of 0 bytes", __func__); |
1da177e4 LT |
2069 | return 0; |
2070 | } | |
2071 | ||
2072 | if (edge_port == NULL) | |
2073 | return -ENODEV; | |
2074 | if (edge_port->close_pending == 1) | |
2075 | return -ENODEV; | |
2076 | ||
2077 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
2078 | count = edge_buf_put(edge_port->ep_out_buf, data, count); | |
2079 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
2080 | ||
95da310e | 2081 | edge_send(tty); |
1da177e4 LT |
2082 | |
2083 | return count; | |
2084 | } | |
2085 | ||
95da310e | 2086 | static void edge_send(struct tty_struct *tty) |
1da177e4 | 2087 | { |
95da310e | 2088 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
2089 | int count, result; |
2090 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1da177e4 LT |
2091 | unsigned long flags; |
2092 | ||
2093 | ||
441b62c1 | 2094 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
2095 | |
2096 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
2097 | ||
2098 | if (edge_port->ep_write_urb_in_use) { | |
2099 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
2100 | return; | |
2101 | } | |
2102 | ||
2103 | count = edge_buf_get(edge_port->ep_out_buf, | |
2104 | port->write_urb->transfer_buffer, | |
2105 | port->bulk_out_size); | |
2106 | ||
2107 | if (count == 0) { | |
2108 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
2109 | return; | |
2110 | } | |
2111 | ||
2112 | edge_port->ep_write_urb_in_use = 1; | |
2113 | ||
2114 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
2115 | ||
2742fd88 AC |
2116 | usb_serial_debug_data(debug, &port->dev, __func__, count, |
2117 | port->write_urb->transfer_buffer); | |
1da177e4 LT |
2118 | |
2119 | /* set up our urb */ | |
2742fd88 AC |
2120 | usb_fill_bulk_urb(port->write_urb, port->serial->dev, |
2121 | usb_sndbulkpipe(port->serial->dev, | |
1da177e4 LT |
2122 | port->bulk_out_endpointAddress), |
2123 | port->write_urb->transfer_buffer, count, | |
2124 | edge_bulk_out_callback, | |
2125 | port); | |
2126 | ||
2127 | /* send the data out the bulk port */ | |
2128 | result = usb_submit_urb(port->write_urb, GFP_ATOMIC); | |
2129 | if (result) { | |
2742fd88 AC |
2130 | dev_err(&port->dev, |
2131 | "%s - failed submitting write urb, error %d\n", | |
2132 | __func__, result); | |
1da177e4 | 2133 | edge_port->ep_write_urb_in_use = 0; |
2742fd88 AC |
2134 | /* TODO: reschedule edge_send */ |
2135 | } else | |
1da177e4 | 2136 | edge_port->icount.tx += count; |
1da177e4 LT |
2137 | |
2138 | /* wakeup any process waiting for writes to complete */ | |
2139 | /* there is now more room in the buffer for new writes */ | |
2742fd88 | 2140 | if (tty) |
1da177e4 | 2141 | tty_wakeup(tty); |
1da177e4 LT |
2142 | } |
2143 | ||
95da310e | 2144 | static int edge_write_room(struct tty_struct *tty) |
1da177e4 | 2145 | { |
95da310e | 2146 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
2147 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
2148 | int room = 0; | |
2149 | unsigned long flags; | |
2150 | ||
441b62c1 | 2151 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
2152 | |
2153 | if (edge_port == NULL) | |
2742fd88 | 2154 | return 0; |
1da177e4 | 2155 | if (edge_port->close_pending == 1) |
2742fd88 | 2156 | return 0; |
1da177e4 LT |
2157 | |
2158 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
2159 | room = edge_buf_space_avail(edge_port->ep_out_buf); | |
2160 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
2161 | ||
441b62c1 | 2162 | dbg("%s - returns %d", __func__, room); |
1da177e4 LT |
2163 | return room; |
2164 | } | |
2165 | ||
95da310e | 2166 | static int edge_chars_in_buffer(struct tty_struct *tty) |
1da177e4 | 2167 | { |
95da310e | 2168 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
2169 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
2170 | int chars = 0; | |
2171 | unsigned long flags; | |
2172 | ||
441b62c1 | 2173 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
2174 | |
2175 | if (edge_port == NULL) | |
2742fd88 | 2176 | return 0; |
1da177e4 | 2177 | if (edge_port->close_pending == 1) |
2742fd88 | 2178 | return 0; |
1da177e4 LT |
2179 | |
2180 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
2181 | chars = edge_buf_data_avail(edge_port->ep_out_buf); | |
2182 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
2183 | ||
2742fd88 | 2184 | dbg("%s - returns %d", __func__, chars); |
1da177e4 LT |
2185 | return chars; |
2186 | } | |
2187 | ||
95da310e | 2188 | static void edge_throttle(struct tty_struct *tty) |
1da177e4 | 2189 | { |
95da310e | 2190 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 2191 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1da177e4 LT |
2192 | int status; |
2193 | ||
441b62c1 | 2194 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
2195 | |
2196 | if (edge_port == NULL) | |
2197 | return; | |
2198 | ||
1da177e4 LT |
2199 | /* if we are implementing XON/XOFF, send the stop character */ |
2200 | if (I_IXOFF(tty)) { | |
2201 | unsigned char stop_char = STOP_CHAR(tty); | |
95da310e AC |
2202 | status = edge_write(tty, port, &stop_char, 1); |
2203 | if (status <= 0) { | |
2204 | dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status); | |
2205 | } | |
1da177e4 LT |
2206 | } |
2207 | ||
2208 | /* if we are implementing RTS/CTS, stop reads */ | |
2209 | /* and the Edgeport will clear the RTS line */ | |
2210 | if (C_CRTSCTS(tty)) | |
2211 | stop_read(edge_port); | |
2212 | ||
2213 | } | |
2214 | ||
95da310e | 2215 | static void edge_unthrottle(struct tty_struct *tty) |
1da177e4 | 2216 | { |
95da310e | 2217 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 2218 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1da177e4 LT |
2219 | int status; |
2220 | ||
441b62c1 | 2221 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
2222 | |
2223 | if (edge_port == NULL) | |
2224 | return; | |
2225 | ||
1da177e4 LT |
2226 | /* if we are implementing XON/XOFF, send the start character */ |
2227 | if (I_IXOFF(tty)) { | |
2228 | unsigned char start_char = START_CHAR(tty); | |
95da310e AC |
2229 | status = edge_write(tty, port, &start_char, 1); |
2230 | if (status <= 0) { | |
2231 | dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status); | |
2232 | } | |
1da177e4 | 2233 | } |
1da177e4 LT |
2234 | /* if we are implementing RTS/CTS, restart reads */ |
2235 | /* are the Edgeport will assert the RTS line */ | |
2236 | if (C_CRTSCTS(tty)) { | |
2237 | status = restart_read(edge_port); | |
2238 | if (status) | |
2742fd88 AC |
2239 | dev_err(&port->dev, |
2240 | "%s - read bulk usb_submit_urb failed: %d\n", | |
2241 | __func__, status); | |
1da177e4 LT |
2242 | } |
2243 | ||
2244 | } | |
2245 | ||
2246 | static void stop_read(struct edgeport_port *edge_port) | |
2247 | { | |
2248 | unsigned long flags; | |
2249 | ||
2250 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
2251 | ||
2252 | if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) | |
2253 | edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING; | |
2254 | edge_port->shadow_mcr &= ~MCR_RTS; | |
2255 | ||
2256 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
2257 | } | |
2258 | ||
2259 | static int restart_read(struct edgeport_port *edge_port) | |
2260 | { | |
2261 | struct urb *urb; | |
2262 | int status = 0; | |
2263 | unsigned long flags; | |
2264 | ||
2265 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
2266 | ||
2267 | if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) { | |
2268 | urb = edge_port->port->read_urb; | |
2269 | urb->complete = edge_bulk_in_callback; | |
2270 | urb->context = edge_port; | |
2271 | urb->dev = edge_port->port->serial->dev; | |
efdff608 | 2272 | status = usb_submit_urb(urb, GFP_ATOMIC); |
1da177e4 LT |
2273 | } |
2274 | edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; | |
2275 | edge_port->shadow_mcr |= MCR_RTS; | |
2276 | ||
2277 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
2278 | ||
2279 | return status; | |
2280 | } | |
2281 | ||
95da310e AC |
2282 | static void change_port_settings(struct tty_struct *tty, |
2283 | struct edgeport_port *edge_port, struct ktermios *old_termios) | |
1da177e4 LT |
2284 | { |
2285 | struct ump_uart_config *config; | |
1da177e4 LT |
2286 | int baud; |
2287 | unsigned cflag; | |
2288 | int status; | |
2742fd88 AC |
2289 | int port_number = edge_port->port->number - |
2290 | edge_port->port->serial->minor; | |
1da177e4 | 2291 | |
441b62c1 | 2292 | dbg("%s - port %d", __func__, edge_port->port->number); |
1da177e4 | 2293 | |
95da310e | 2294 | config = kmalloc (sizeof (*config), GFP_KERNEL); |
1da177e4 | 2295 | if (!config) { |
2742fd88 AC |
2296 | *tty->termios = *old_termios; |
2297 | dev_err(&edge_port->port->dev, "%s - out of memory\n", | |
2298 | __func__); | |
1da177e4 LT |
2299 | return; |
2300 | } | |
2301 | ||
2302 | cflag = tty->termios->c_cflag; | |
2303 | ||
2304 | config->wFlags = 0; | |
2305 | ||
2306 | /* These flags must be set */ | |
2307 | config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT; | |
2308 | config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR; | |
2309 | config->bUartMode = (__u8)(edge_port->bUartMode); | |
2310 | ||
2311 | switch (cflag & CSIZE) { | |
2742fd88 AC |
2312 | case CS5: |
2313 | config->bDataBits = UMP_UART_CHAR5BITS; | |
2314 | dbg("%s - data bits = 5", __func__); | |
2315 | break; | |
2316 | case CS6: | |
2317 | config->bDataBits = UMP_UART_CHAR6BITS; | |
2318 | dbg("%s - data bits = 6", __func__); | |
2319 | break; | |
2320 | case CS7: | |
2321 | config->bDataBits = UMP_UART_CHAR7BITS; | |
2322 | dbg("%s - data bits = 7", __func__); | |
2323 | break; | |
2324 | default: | |
2325 | case CS8: | |
2326 | config->bDataBits = UMP_UART_CHAR8BITS; | |
2327 | dbg("%s - data bits = 8", __func__); | |
1da177e4 LT |
2328 | break; |
2329 | } | |
2330 | ||
2331 | if (cflag & PARENB) { | |
2332 | if (cflag & PARODD) { | |
2333 | config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; | |
2334 | config->bParity = UMP_UART_ODDPARITY; | |
441b62c1 | 2335 | dbg("%s - parity = odd", __func__); |
1da177e4 LT |
2336 | } else { |
2337 | config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; | |
2338 | config->bParity = UMP_UART_EVENPARITY; | |
441b62c1 | 2339 | dbg("%s - parity = even", __func__); |
1da177e4 LT |
2340 | } |
2341 | } else { | |
2742fd88 | 2342 | config->bParity = UMP_UART_NOPARITY; |
441b62c1 | 2343 | dbg("%s - parity = none", __func__); |
1da177e4 LT |
2344 | } |
2345 | ||
2346 | if (cflag & CSTOPB) { | |
2347 | config->bStopBits = UMP_UART_STOPBIT2; | |
441b62c1 | 2348 | dbg("%s - stop bits = 2", __func__); |
1da177e4 LT |
2349 | } else { |
2350 | config->bStopBits = UMP_UART_STOPBIT1; | |
441b62c1 | 2351 | dbg("%s - stop bits = 1", __func__); |
1da177e4 LT |
2352 | } |
2353 | ||
2354 | /* figure out the flow control settings */ | |
2355 | if (cflag & CRTSCTS) { | |
2356 | config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW; | |
2357 | config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW; | |
441b62c1 | 2358 | dbg("%s - RTS/CTS is enabled", __func__); |
1da177e4 | 2359 | } else { |
441b62c1 | 2360 | dbg("%s - RTS/CTS is disabled", __func__); |
1da177e4 LT |
2361 | tty->hw_stopped = 0; |
2362 | restart_read(edge_port); | |
2363 | } | |
2364 | ||
2742fd88 AC |
2365 | /* if we are implementing XON/XOFF, set the start and stop |
2366 | character in the device */ | |
2367 | config->cXon = START_CHAR(tty); | |
2368 | config->cXoff = STOP_CHAR(tty); | |
1da177e4 | 2369 | |
2742fd88 AC |
2370 | /* if we are implementing INBOUND XON/XOFF */ |
2371 | if (I_IXOFF(tty)) { | |
2372 | config->wFlags |= UMP_MASK_UART_FLAGS_IN_X; | |
2373 | dbg("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", | |
2374 | __func__, config->cXon, config->cXoff); | |
2375 | } else | |
2376 | dbg("%s - INBOUND XON/XOFF is disabled", __func__); | |
1da177e4 | 2377 | |
2742fd88 AC |
2378 | /* if we are implementing OUTBOUND XON/XOFF */ |
2379 | if (I_IXON(tty)) { | |
2380 | config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X; | |
2381 | dbg("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", | |
2382 | __func__, config->cXon, config->cXoff); | |
2383 | } else | |
2384 | dbg("%s - OUTBOUND XON/XOFF is disabled", __func__); | |
1da177e4 | 2385 | |
d5f5bcd4 AC |
2386 | tty->termios->c_cflag &= ~CMSPAR; |
2387 | ||
1da177e4 LT |
2388 | /* Round the baud rate */ |
2389 | baud = tty_get_baud_rate(tty); | |
2390 | if (!baud) { | |
2391 | /* pick a default, any default... */ | |
2392 | baud = 9600; | |
d5f5bcd4 AC |
2393 | } else |
2394 | tty_encode_baud_rate(tty, baud, baud); | |
2395 | ||
1da177e4 LT |
2396 | edge_port->baud_rate = baud; |
2397 | config->wBaudRate = (__u16)((461550L + baud/2) / baud); | |
2398 | ||
d5f5bcd4 AC |
2399 | /* FIXME: Recompute actual baud from divisor here */ |
2400 | ||
2742fd88 AC |
2401 | dbg("%s - baud rate = %d, wBaudRate = %d", __func__, baud, |
2402 | config->wBaudRate); | |
1da177e4 | 2403 | |
2742fd88 AC |
2404 | dbg("wBaudRate: %d", (int)(461550L / config->wBaudRate)); |
2405 | dbg("wFlags: 0x%x", config->wFlags); | |
2406 | dbg("bDataBits: %d", config->bDataBits); | |
2407 | dbg("bParity: %d", config->bParity); | |
2408 | dbg("bStopBits: %d", config->bStopBits); | |
2409 | dbg("cXon: %d", config->cXon); | |
2410 | dbg("cXoff: %d", config->cXoff); | |
2411 | dbg("bUartMode: %d", config->bUartMode); | |
1da177e4 LT |
2412 | |
2413 | /* move the word values into big endian mode */ | |
2742fd88 AC |
2414 | cpu_to_be16s(&config->wFlags); |
2415 | cpu_to_be16s(&config->wBaudRate); | |
1da177e4 | 2416 | |
2742fd88 | 2417 | status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG, |
1da177e4 | 2418 | (__u8)(UMPM_UART1_PORT + port_number), |
2742fd88 AC |
2419 | 0, (__u8 *)config, sizeof(*config)); |
2420 | if (status) | |
2421 | dbg("%s - error %d when trying to write config to device", | |
441b62c1 | 2422 | __func__, status); |
2742fd88 | 2423 | kfree(config); |
1da177e4 LT |
2424 | return; |
2425 | } | |
2426 | ||
2e0ddd62 | 2427 | static void edge_set_termios(struct tty_struct *tty, |
95da310e | 2428 | struct usb_serial_port *port, struct ktermios *old_termios) |
1da177e4 LT |
2429 | { |
2430 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
95da310e AC |
2431 | unsigned int cflag; |
2432 | ||
2433 | cflag = tty->termios->c_cflag; | |
1da177e4 | 2434 | |
441b62c1 | 2435 | dbg("%s - clfag %08x iflag %08x", __func__, |
1da177e4 | 2436 | tty->termios->c_cflag, tty->termios->c_iflag); |
441b62c1 | 2437 | dbg("%s - old clfag %08x old iflag %08x", __func__, |
d5f5bcd4 | 2438 | old_termios->c_cflag, old_termios->c_iflag); |
441b62c1 | 2439 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
2440 | |
2441 | if (edge_port == NULL) | |
2442 | return; | |
1da177e4 | 2443 | /* change the port settings to the new ones specified */ |
95da310e AC |
2444 | change_port_settings(tty, edge_port, old_termios); |
2445 | return; | |
1da177e4 LT |
2446 | } |
2447 | ||
95da310e | 2448 | static int edge_tiocmset(struct tty_struct *tty, struct file *file, |
2742fd88 | 2449 | unsigned int set, unsigned int clear) |
1da177e4 | 2450 | { |
95da310e | 2451 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
2452 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
2453 | unsigned int mcr; | |
3d71fe0b | 2454 | unsigned long flags; |
1da177e4 | 2455 | |
441b62c1 | 2456 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 2457 | |
3d71fe0b | 2458 | spin_lock_irqsave(&edge_port->ep_lock, flags); |
1da177e4 LT |
2459 | mcr = edge_port->shadow_mcr; |
2460 | if (set & TIOCM_RTS) | |
2461 | mcr |= MCR_RTS; | |
2462 | if (set & TIOCM_DTR) | |
2463 | mcr |= MCR_DTR; | |
2464 | if (set & TIOCM_LOOP) | |
2465 | mcr |= MCR_LOOPBACK; | |
2466 | ||
2467 | if (clear & TIOCM_RTS) | |
2468 | mcr &= ~MCR_RTS; | |
2469 | if (clear & TIOCM_DTR) | |
2470 | mcr &= ~MCR_DTR; | |
2471 | if (clear & TIOCM_LOOP) | |
2472 | mcr &= ~MCR_LOOPBACK; | |
2473 | ||
2474 | edge_port->shadow_mcr = mcr; | |
3d71fe0b | 2475 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); |
1da177e4 | 2476 | |
2742fd88 | 2477 | restore_mcr(edge_port, mcr); |
1da177e4 LT |
2478 | return 0; |
2479 | } | |
2480 | ||
95da310e | 2481 | static int edge_tiocmget(struct tty_struct *tty, struct file *file) |
1da177e4 | 2482 | { |
95da310e | 2483 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
2484 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
2485 | unsigned int result = 0; | |
2486 | unsigned int msr; | |
2487 | unsigned int mcr; | |
3d71fe0b | 2488 | unsigned long flags; |
1da177e4 | 2489 | |
441b62c1 | 2490 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 2491 | |
3d71fe0b AC |
2492 | spin_lock_irqsave(&edge_port->ep_lock, flags); |
2493 | ||
1da177e4 LT |
2494 | msr = edge_port->shadow_msr; |
2495 | mcr = edge_port->shadow_mcr; | |
2496 | result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ | |
2497 | | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ | |
2498 | | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ | |
2499 | | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */ | |
2500 | | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ | |
2501 | | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ | |
2502 | ||
2503 | ||
441b62c1 | 2504 | dbg("%s -- %x", __func__, result); |
3d71fe0b | 2505 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); |
1da177e4 LT |
2506 | |
2507 | return result; | |
2508 | } | |
2509 | ||
2742fd88 AC |
2510 | static int get_serial_info(struct edgeport_port *edge_port, |
2511 | struct serial_struct __user *retinfo) | |
1da177e4 LT |
2512 | { |
2513 | struct serial_struct tmp; | |
2514 | ||
2515 | if (!retinfo) | |
2516 | return -EFAULT; | |
2517 | ||
2518 | memset(&tmp, 0, sizeof(tmp)); | |
2519 | ||
2520 | tmp.type = PORT_16550A; | |
2521 | tmp.line = edge_port->port->serial->minor; | |
2522 | tmp.port = edge_port->port->number; | |
2523 | tmp.irq = 0; | |
2524 | tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; | |
2525 | tmp.xmit_fifo_size = edge_port->port->bulk_out_size; | |
2526 | tmp.baud_base = 9600; | |
2527 | tmp.close_delay = 5*HZ; | |
2528 | tmp.closing_wait = closing_wait; | |
1da177e4 LT |
2529 | |
2530 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) | |
2531 | return -EFAULT; | |
2532 | return 0; | |
2533 | } | |
2534 | ||
95da310e | 2535 | static int edge_ioctl(struct tty_struct *tty, struct file *file, |
2742fd88 | 2536 | unsigned int cmd, unsigned long arg) |
1da177e4 | 2537 | { |
95da310e | 2538 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
2539 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
2540 | struct async_icount cnow; | |
2541 | struct async_icount cprev; | |
2542 | ||
441b62c1 | 2543 | dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd); |
1da177e4 LT |
2544 | |
2545 | switch (cmd) { | |
2742fd88 AC |
2546 | case TIOCGSERIAL: |
2547 | dbg("%s - (%d) TIOCGSERIAL", __func__, port->number); | |
2548 | return get_serial_info(edge_port, | |
2549 | (struct serial_struct __user *) arg); | |
2550 | case TIOCMIWAIT: | |
2551 | dbg("%s - (%d) TIOCMIWAIT", __func__, port->number); | |
2552 | cprev = edge_port->icount; | |
2553 | while (1) { | |
2554 | interruptible_sleep_on(&edge_port->delta_msr_wait); | |
2555 | /* see if a signal did it */ | |
2556 | if (signal_pending(current)) | |
2557 | return -ERESTARTSYS; | |
2558 | cnow = edge_port->icount; | |
2559 | if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && | |
2560 | cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) | |
2561 | return -EIO; /* no change => error */ | |
2562 | if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || | |
2563 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || | |
2564 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || | |
2565 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) { | |
2566 | return 0; | |
1da177e4 | 2567 | } |
2742fd88 AC |
2568 | cprev = cnow; |
2569 | } | |
2570 | /* not reached */ | |
2571 | break; | |
2572 | case TIOCGICOUNT: | |
2573 | dbg("%s - (%d) TIOCGICOUNT RX=%d, TX=%d", __func__, | |
2574 | port->number, edge_port->icount.rx, edge_port->icount.tx); | |
2575 | if (copy_to_user((void __user *)arg, &edge_port->icount, | |
2576 | sizeof(edge_port->icount))) | |
2577 | return -EFAULT; | |
2578 | return 0; | |
1da177e4 | 2579 | } |
1da177e4 LT |
2580 | return -ENOIOCTLCMD; |
2581 | } | |
2582 | ||
95da310e | 2583 | static void edge_break(struct tty_struct *tty, int break_state) |
1da177e4 | 2584 | { |
95da310e | 2585 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
2586 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
2587 | int status; | |
2742fd88 | 2588 | int bv = 0; /* Off */ |
1da177e4 | 2589 | |
95da310e | 2590 | dbg("%s - state = %d", __func__, break_state); |
1da177e4 LT |
2591 | |
2592 | /* chase the port close */ | |
2742fd88 | 2593 | chase_port(edge_port, 0, 0); |
1da177e4 | 2594 | |
95da310e | 2595 | if (break_state == -1) |
2742fd88 AC |
2596 | bv = 1; /* On */ |
2597 | status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv); | |
2598 | if (status) | |
2599 | dbg("%s - error %d sending break set/clear command.", | |
441b62c1 | 2600 | __func__, status); |
1da177e4 LT |
2601 | } |
2602 | ||
2742fd88 | 2603 | static int edge_startup(struct usb_serial *serial) |
1da177e4 LT |
2604 | { |
2605 | struct edgeport_serial *edge_serial; | |
2606 | struct edgeport_port *edge_port; | |
2607 | struct usb_device *dev; | |
2608 | int status; | |
2609 | int i; | |
2610 | ||
2611 | dev = serial->dev; | |
2612 | ||
2613 | /* create our private serial structure */ | |
80b6ca48 | 2614 | edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL); |
1da177e4 | 2615 | if (edge_serial == NULL) { |
441b62c1 | 2616 | dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__); |
1da177e4 LT |
2617 | return -ENOMEM; |
2618 | } | |
241ca64f | 2619 | mutex_init(&edge_serial->es_lock); |
1da177e4 LT |
2620 | edge_serial->serial = serial; |
2621 | usb_set_serial_data(serial, edge_serial); | |
2622 | ||
2742fd88 | 2623 | status = download_fw(edge_serial); |
1da177e4 | 2624 | if (status) { |
2742fd88 | 2625 | kfree(edge_serial); |
1da177e4 LT |
2626 | return status; |
2627 | } | |
2628 | ||
2629 | /* set up our port private structures */ | |
2630 | for (i = 0; i < serial->num_ports; ++i) { | |
80b6ca48 | 2631 | edge_port = kzalloc(sizeof(struct edgeport_port), GFP_KERNEL); |
1da177e4 | 2632 | if (edge_port == NULL) { |
2742fd88 AC |
2633 | dev_err(&serial->dev->dev, "%s - Out of memory\n", |
2634 | __func__); | |
1da177e4 LT |
2635 | goto cleanup; |
2636 | } | |
1da177e4 LT |
2637 | spin_lock_init(&edge_port->ep_lock); |
2638 | edge_port->ep_out_buf = edge_buf_alloc(EDGE_OUT_BUF_SIZE); | |
2639 | if (edge_port->ep_out_buf == NULL) { | |
2742fd88 AC |
2640 | dev_err(&serial->dev->dev, "%s - Out of memory\n", |
2641 | __func__); | |
1da177e4 LT |
2642 | kfree(edge_port); |
2643 | goto cleanup; | |
2644 | } | |
2645 | edge_port->port = serial->port[i]; | |
2646 | edge_port->edge_serial = edge_serial; | |
2647 | usb_set_serial_port_data(serial->port[i], edge_port); | |
fc4cbd75 | 2648 | edge_port->bUartMode = default_uart_mode; |
1da177e4 | 2649 | } |
2742fd88 | 2650 | |
1da177e4 LT |
2651 | return 0; |
2652 | ||
2653 | cleanup: | |
2742fd88 | 2654 | for (--i; i >= 0; --i) { |
1da177e4 LT |
2655 | edge_port = usb_get_serial_port_data(serial->port[i]); |
2656 | edge_buf_free(edge_port->ep_out_buf); | |
2657 | kfree(edge_port); | |
2658 | usb_set_serial_port_data(serial->port[i], NULL); | |
2659 | } | |
2742fd88 | 2660 | kfree(edge_serial); |
1da177e4 LT |
2661 | usb_set_serial_data(serial, NULL); |
2662 | return -ENOMEM; | |
2663 | } | |
2664 | ||
f9c99bb8 | 2665 | static void edge_disconnect(struct usb_serial *serial) |
1da177e4 LT |
2666 | { |
2667 | int i; | |
2668 | struct edgeport_port *edge_port; | |
2669 | ||
2742fd88 | 2670 | dbg("%s", __func__); |
1da177e4 | 2671 | |
0d46c007 | 2672 | for (i = 0; i < serial->num_ports; ++i) { |
1da177e4 | 2673 | edge_port = usb_get_serial_port_data(serial->port[i]); |
fc4cbd75 | 2674 | edge_remove_sysfs_attrs(edge_port->port); |
f9c99bb8 AS |
2675 | } |
2676 | } | |
2677 | ||
2678 | static void edge_release(struct usb_serial *serial) | |
2679 | { | |
2680 | int i; | |
2681 | struct edgeport_port *edge_port; | |
2682 | ||
2683 | dbg("%s", __func__); | |
2684 | ||
2685 | for (i = 0; i < serial->num_ports; ++i) { | |
2686 | edge_port = usb_get_serial_port_data(serial->port[i]); | |
0d46c007 JJ |
2687 | edge_buf_free(edge_port->ep_out_buf); |
2688 | kfree(edge_port); | |
1da177e4 | 2689 | } |
0d46c007 | 2690 | kfree(usb_get_serial_data(serial)); |
1da177e4 LT |
2691 | } |
2692 | ||
2693 | ||
fc4cbd75 MP |
2694 | /* Sysfs Attributes */ |
2695 | ||
2696 | static ssize_t show_uart_mode(struct device *dev, | |
2697 | struct device_attribute *attr, char *buf) | |
2698 | { | |
2699 | struct usb_serial_port *port = to_usb_serial_port(dev); | |
2700 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
2701 | ||
2702 | return sprintf(buf, "%d\n", edge_port->bUartMode); | |
2703 | } | |
2704 | ||
2705 | static ssize_t store_uart_mode(struct device *dev, | |
2706 | struct device_attribute *attr, const char *valbuf, size_t count) | |
2707 | { | |
2708 | struct usb_serial_port *port = to_usb_serial_port(dev); | |
2709 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
2710 | unsigned int v = simple_strtoul(valbuf, NULL, 0); | |
2711 | ||
441b62c1 | 2712 | dbg("%s: setting uart_mode = %d", __func__, v); |
fc4cbd75 MP |
2713 | |
2714 | if (v < 256) | |
2715 | edge_port->bUartMode = v; | |
2716 | else | |
441b62c1 | 2717 | dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v); |
fc4cbd75 MP |
2718 | |
2719 | return count; | |
2720 | } | |
2721 | ||
2742fd88 AC |
2722 | static DEVICE_ATTR(uart_mode, S_IWUSR | S_IRUGO, show_uart_mode, |
2723 | store_uart_mode); | |
fc4cbd75 MP |
2724 | |
2725 | static int edge_create_sysfs_attrs(struct usb_serial_port *port) | |
2726 | { | |
2727 | return device_create_file(&port->dev, &dev_attr_uart_mode); | |
2728 | } | |
2729 | ||
2730 | static int edge_remove_sysfs_attrs(struct usb_serial_port *port) | |
2731 | { | |
2732 | device_remove_file(&port->dev, &dev_attr_uart_mode); | |
2733 | return 0; | |
2734 | } | |
2735 | ||
2736 | ||
1da177e4 LT |
2737 | /* Circular Buffer */ |
2738 | ||
2739 | /* | |
2740 | * edge_buf_alloc | |
2741 | * | |
2742 | * Allocate a circular buffer and all associated memory. | |
2743 | */ | |
2744 | ||
2745 | static struct edge_buf *edge_buf_alloc(unsigned int size) | |
2746 | { | |
2747 | struct edge_buf *eb; | |
2748 | ||
2749 | ||
2750 | if (size == 0) | |
2751 | return NULL; | |
2752 | ||
5cbded58 | 2753 | eb = kmalloc(sizeof(struct edge_buf), GFP_KERNEL); |
1da177e4 LT |
2754 | if (eb == NULL) |
2755 | return NULL; | |
2756 | ||
2757 | eb->buf_buf = kmalloc(size, GFP_KERNEL); | |
2758 | if (eb->buf_buf == NULL) { | |
2759 | kfree(eb); | |
2760 | return NULL; | |
2761 | } | |
2762 | ||
2763 | eb->buf_size = size; | |
2764 | eb->buf_get = eb->buf_put = eb->buf_buf; | |
2765 | ||
2766 | return eb; | |
2767 | } | |
2768 | ||
2769 | ||
2770 | /* | |
2771 | * edge_buf_free | |
2772 | * | |
2773 | * Free the buffer and all associated memory. | |
2774 | */ | |
2775 | ||
3d48586c | 2776 | static void edge_buf_free(struct edge_buf *eb) |
1da177e4 | 2777 | { |
1bc3c9e1 JJ |
2778 | if (eb) { |
2779 | kfree(eb->buf_buf); | |
1da177e4 LT |
2780 | kfree(eb); |
2781 | } | |
2782 | } | |
2783 | ||
2784 | ||
2785 | /* | |
2786 | * edge_buf_clear | |
2787 | * | |
2788 | * Clear out all data in the circular buffer. | |
2789 | */ | |
2790 | ||
2791 | static void edge_buf_clear(struct edge_buf *eb) | |
2792 | { | |
2742fd88 AC |
2793 | if (eb != NULL) |
2794 | eb->buf_get = eb->buf_put; | |
2795 | /* equivalent to a get of all data available */ | |
1da177e4 LT |
2796 | } |
2797 | ||
2798 | ||
2799 | /* | |
2800 | * edge_buf_data_avail | |
2801 | * | |
2802 | * Return the number of bytes of data available in the circular | |
2803 | * buffer. | |
2804 | */ | |
2805 | ||
2806 | static unsigned int edge_buf_data_avail(struct edge_buf *eb) | |
2807 | { | |
2742fd88 | 2808 | if (eb == NULL) |
1da177e4 | 2809 | return 0; |
2742fd88 | 2810 | return ((eb->buf_size + eb->buf_put - eb->buf_get) % eb->buf_size); |
1da177e4 LT |
2811 | } |
2812 | ||
2813 | ||
2814 | /* | |
2815 | * edge_buf_space_avail | |
2816 | * | |
2817 | * Return the number of bytes of space available in the circular | |
2818 | * buffer. | |
2819 | */ | |
2820 | ||
2821 | static unsigned int edge_buf_space_avail(struct edge_buf *eb) | |
2822 | { | |
2742fd88 | 2823 | if (eb == NULL) |
1da177e4 | 2824 | return 0; |
2742fd88 | 2825 | return ((eb->buf_size + eb->buf_get - eb->buf_put - 1) % eb->buf_size); |
1da177e4 LT |
2826 | } |
2827 | ||
2828 | ||
2829 | /* | |
2830 | * edge_buf_put | |
2831 | * | |
2832 | * Copy data data from a user buffer and put it into the circular buffer. | |
2833 | * Restrict to the amount of space available. | |
2834 | * | |
2835 | * Return the number of bytes copied. | |
2836 | */ | |
2837 | ||
2838 | static unsigned int edge_buf_put(struct edge_buf *eb, const char *buf, | |
2839 | unsigned int count) | |
2840 | { | |
2841 | unsigned int len; | |
2842 | ||
2843 | ||
2844 | if (eb == NULL) | |
2845 | return 0; | |
2846 | ||
2847 | len = edge_buf_space_avail(eb); | |
2848 | if (count > len) | |
2849 | count = len; | |
2850 | ||
2851 | if (count == 0) | |
2852 | return 0; | |
2853 | ||
2854 | len = eb->buf_buf + eb->buf_size - eb->buf_put; | |
2855 | if (count > len) { | |
2856 | memcpy(eb->buf_put, buf, len); | |
2857 | memcpy(eb->buf_buf, buf+len, count - len); | |
2858 | eb->buf_put = eb->buf_buf + count - len; | |
2859 | } else { | |
2860 | memcpy(eb->buf_put, buf, count); | |
2861 | if (count < len) | |
2862 | eb->buf_put += count; | |
2863 | else /* count == len */ | |
2864 | eb->buf_put = eb->buf_buf; | |
2865 | } | |
2866 | ||
2867 | return count; | |
2868 | } | |
2869 | ||
2870 | ||
2871 | /* | |
2872 | * edge_buf_get | |
2873 | * | |
2874 | * Get data from the circular buffer and copy to the given buffer. | |
2875 | * Restrict to the amount of data available. | |
2876 | * | |
2877 | * Return the number of bytes copied. | |
2878 | */ | |
2879 | ||
2880 | static unsigned int edge_buf_get(struct edge_buf *eb, char *buf, | |
2881 | unsigned int count) | |
2882 | { | |
2883 | unsigned int len; | |
2884 | ||
2885 | ||
2886 | if (eb == NULL) | |
2887 | return 0; | |
2888 | ||
2889 | len = edge_buf_data_avail(eb); | |
2890 | if (count > len) | |
2891 | count = len; | |
2892 | ||
2893 | if (count == 0) | |
2894 | return 0; | |
2895 | ||
2896 | len = eb->buf_buf + eb->buf_size - eb->buf_get; | |
2897 | if (count > len) { | |
2898 | memcpy(buf, eb->buf_get, len); | |
2899 | memcpy(buf+len, eb->buf_buf, count - len); | |
2900 | eb->buf_get = eb->buf_buf + count - len; | |
2901 | } else { | |
2902 | memcpy(buf, eb->buf_get, count); | |
2903 | if (count < len) | |
2904 | eb->buf_get += count; | |
2905 | else /* count == len */ | |
2906 | eb->buf_get = eb->buf_buf; | |
2907 | } | |
2908 | ||
2909 | return count; | |
2910 | } | |
2911 | ||
2912 | ||
ea65370d | 2913 | static struct usb_serial_driver edgeport_1port_device = { |
18fcac35 | 2914 | .driver = { |
269bda1c GKH |
2915 | .owner = THIS_MODULE, |
2916 | .name = "edgeport_ti_1", | |
18fcac35 | 2917 | }, |
269bda1c | 2918 | .description = "Edgeport TI 1 port adapter", |
d9b1b787 | 2919 | .usb_driver = &io_driver, |
1da177e4 | 2920 | .id_table = edgeport_1port_id_table, |
1da177e4 LT |
2921 | .num_ports = 1, |
2922 | .open = edge_open, | |
2923 | .close = edge_close, | |
2924 | .throttle = edge_throttle, | |
2925 | .unthrottle = edge_unthrottle, | |
2926 | .attach = edge_startup, | |
f9c99bb8 AS |
2927 | .disconnect = edge_disconnect, |
2928 | .release = edge_release, | |
fc4cbd75 | 2929 | .port_probe = edge_create_sysfs_attrs, |
1da177e4 LT |
2930 | .ioctl = edge_ioctl, |
2931 | .set_termios = edge_set_termios, | |
2932 | .tiocmget = edge_tiocmget, | |
2933 | .tiocmset = edge_tiocmset, | |
2934 | .write = edge_write, | |
2935 | .write_room = edge_write_room, | |
2936 | .chars_in_buffer = edge_chars_in_buffer, | |
2937 | .break_ctl = edge_break, | |
2938 | .read_int_callback = edge_interrupt_callback, | |
2939 | .read_bulk_callback = edge_bulk_in_callback, | |
2940 | .write_bulk_callback = edge_bulk_out_callback, | |
2941 | }; | |
2942 | ||
ea65370d | 2943 | static struct usb_serial_driver edgeport_2port_device = { |
18fcac35 | 2944 | .driver = { |
269bda1c GKH |
2945 | .owner = THIS_MODULE, |
2946 | .name = "edgeport_ti_2", | |
18fcac35 | 2947 | }, |
269bda1c | 2948 | .description = "Edgeport TI 2 port adapter", |
d9b1b787 | 2949 | .usb_driver = &io_driver, |
1da177e4 | 2950 | .id_table = edgeport_2port_id_table, |
1da177e4 LT |
2951 | .num_ports = 2, |
2952 | .open = edge_open, | |
2953 | .close = edge_close, | |
2954 | .throttle = edge_throttle, | |
2955 | .unthrottle = edge_unthrottle, | |
2956 | .attach = edge_startup, | |
f9c99bb8 AS |
2957 | .disconnect = edge_disconnect, |
2958 | .release = edge_release, | |
fc4cbd75 | 2959 | .port_probe = edge_create_sysfs_attrs, |
1da177e4 LT |
2960 | .ioctl = edge_ioctl, |
2961 | .set_termios = edge_set_termios, | |
2962 | .tiocmget = edge_tiocmget, | |
2963 | .tiocmset = edge_tiocmset, | |
2964 | .write = edge_write, | |
2965 | .write_room = edge_write_room, | |
2966 | .chars_in_buffer = edge_chars_in_buffer, | |
2967 | .break_ctl = edge_break, | |
2968 | .read_int_callback = edge_interrupt_callback, | |
2969 | .read_bulk_callback = edge_bulk_in_callback, | |
2970 | .write_bulk_callback = edge_bulk_out_callback, | |
2971 | }; | |
2972 | ||
2973 | ||
2974 | static int __init edgeport_init(void) | |
2975 | { | |
2976 | int retval; | |
2977 | retval = usb_serial_register(&edgeport_1port_device); | |
2978 | if (retval) | |
2979 | goto failed_1port_device_register; | |
2980 | retval = usb_serial_register(&edgeport_2port_device); | |
2981 | if (retval) | |
2982 | goto failed_2port_device_register; | |
2983 | retval = usb_register(&io_driver); | |
2742fd88 | 2984 | if (retval) |
1da177e4 | 2985 | goto failed_usb_register; |
c197a8db GKH |
2986 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" |
2987 | DRIVER_DESC "\n"); | |
1da177e4 LT |
2988 | return 0; |
2989 | failed_usb_register: | |
2990 | usb_serial_deregister(&edgeport_2port_device); | |
2991 | failed_2port_device_register: | |
2992 | usb_serial_deregister(&edgeport_1port_device); | |
2993 | failed_1port_device_register: | |
2994 | return retval; | |
2995 | } | |
2996 | ||
2742fd88 | 2997 | static void __exit edgeport_exit(void) |
1da177e4 | 2998 | { |
2742fd88 AC |
2999 | usb_deregister(&io_driver); |
3000 | usb_serial_deregister(&edgeport_1port_device); | |
3001 | usb_serial_deregister(&edgeport_2port_device); | |
1da177e4 LT |
3002 | } |
3003 | ||
3004 | module_init(edgeport_init); | |
3005 | module_exit(edgeport_exit); | |
3006 | ||
3007 | /* Module information */ | |
3008 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
3009 | MODULE_DESCRIPTION(DRIVER_DESC); | |
3010 | MODULE_LICENSE("GPL"); | |
d12b219a | 3011 | MODULE_FIRMWARE("edgeport/down3.bin"); |
1da177e4 LT |
3012 | |
3013 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
3014 | MODULE_PARM_DESC(debug, "Debug enabled or not"); | |
3015 | ||
1da177e4 LT |
3016 | module_param(closing_wait, int, S_IRUGO | S_IWUSR); |
3017 | MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs"); | |
3018 | ||
3019 | module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR); | |
2742fd88 AC |
3020 | MODULE_PARM_DESC(ignore_cpu_rev, |
3021 | "Ignore the cpu revision when connecting to a device"); | |
1da177e4 | 3022 | |
fc4cbd75 MP |
3023 | module_param(default_uart_mode, int, S_IRUGO | S_IWUSR); |
3024 | MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ..."); |