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 */ | |
7d40d7e8 | 137 | static const struct usb_device_id edgeport_1port_id_table[] = { |
1da177e4 LT |
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 | ||
7d40d7e8 | 157 | static const struct usb_device_id edgeport_2port_id_table[] = { |
1da177e4 LT |
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 */ | |
7d40d7e8 | 180 | static const struct usb_device_id id_table_combined[] = { |
1da177e4 LT |
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; | |
e9305d2f | 416 | u8 *temp; |
1da177e4 LT |
417 | |
418 | /* Must do a read before write */ | |
419 | if (!serial->TiReadI2C) { | |
e9305d2f JH |
420 | temp = kmalloc(1, GFP_KERNEL); |
421 | if (!temp) { | |
422 | dev_err(&serial->serial->dev->dev, | |
423 | "%s - out of memory\n", __func__); | |
424 | return -ENOMEM; | |
425 | } | |
426 | status = read_boot_mem(serial, 0, 1, temp); | |
427 | kfree(temp); | |
1da177e4 LT |
428 | if (status) |
429 | return status; | |
430 | } | |
431 | ||
2742fd88 AC |
432 | for (i = 0; i < length; ++i) { |
433 | status = ti_vsend_sync(serial->serial->dev, | |
434 | UMPC_MEMORY_WRITE, buffer[i], | |
435 | (__u16)(i + start_address), NULL, 0); | |
1da177e4 LT |
436 | if (status) |
437 | return status; | |
438 | } | |
439 | ||
2742fd88 AC |
440 | dbg("%s - start_sddr = %x, length = %d", |
441 | __func__, start_address, length); | |
442 | usb_serial_debug_data(debug, &serial->serial->dev->dev, | |
443 | __func__, length, buffer); | |
1da177e4 LT |
444 | |
445 | return status; | |
446 | } | |
447 | ||
448 | ||
449 | /* Write edgeport I2C memory to TI chip */ | |
2742fd88 AC |
450 | static int write_i2c_mem(struct edgeport_serial *serial, |
451 | int start_address, int length, __u8 address_type, __u8 *buffer) | |
1da177e4 LT |
452 | { |
453 | int status = 0; | |
454 | int write_length; | |
455 | __be16 be_start_address; | |
456 | ||
457 | /* We can only send a maximum of 1 aligned byte page at a time */ | |
2742fd88 | 458 | |
1da177e4 | 459 | /* calulate the number of bytes left in the first page */ |
2742fd88 AC |
460 | write_length = EPROM_PAGE_SIZE - |
461 | (start_address & (EPROM_PAGE_SIZE - 1)); | |
1da177e4 LT |
462 | |
463 | if (write_length > length) | |
464 | write_length = length; | |
465 | ||
2742fd88 AC |
466 | dbg("%s - BytesInFirstPage Addr = %x, length = %d", |
467 | __func__, start_address, write_length); | |
468 | usb_serial_debug_data(debug, &serial->serial->dev->dev, | |
469 | __func__, write_length, buffer); | |
1da177e4 LT |
470 | |
471 | /* Write first page */ | |
2742fd88 AC |
472 | be_start_address = cpu_to_be16(start_address); |
473 | status = ti_vsend_sync(serial->serial->dev, | |
474 | UMPC_MEMORY_WRITE, (__u16)address_type, | |
475 | (__force __u16)be_start_address, | |
476 | buffer, write_length); | |
1da177e4 | 477 | if (status) { |
2742fd88 | 478 | dbg("%s - ERROR %d", __func__, status); |
1da177e4 LT |
479 | return status; |
480 | } | |
481 | ||
482 | length -= write_length; | |
483 | start_address += write_length; | |
484 | buffer += write_length; | |
485 | ||
2742fd88 AC |
486 | /* We should be aligned now -- can write |
487 | max page size bytes at a time */ | |
1da177e4 LT |
488 | while (length) { |
489 | if (length > EPROM_PAGE_SIZE) | |
490 | write_length = EPROM_PAGE_SIZE; | |
491 | else | |
492 | write_length = length; | |
493 | ||
2742fd88 AC |
494 | dbg("%s - Page Write Addr = %x, length = %d", |
495 | __func__, start_address, write_length); | |
496 | usb_serial_debug_data(debug, &serial->serial->dev->dev, | |
497 | __func__, write_length, buffer); | |
1da177e4 LT |
498 | |
499 | /* Write next page */ | |
2742fd88 AC |
500 | be_start_address = cpu_to_be16(start_address); |
501 | status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE, | |
502 | (__u16)address_type, | |
503 | (__force __u16)be_start_address, | |
504 | buffer, write_length); | |
1da177e4 | 505 | if (status) { |
2742fd88 AC |
506 | dev_err(&serial->serial->dev->dev, "%s - ERROR %d\n", |
507 | __func__, status); | |
1da177e4 LT |
508 | return status; |
509 | } | |
2742fd88 | 510 | |
1da177e4 LT |
511 | length -= write_length; |
512 | start_address += write_length; | |
513 | buffer += write_length; | |
514 | } | |
515 | return status; | |
516 | } | |
517 | ||
518 | /* Examine the UMP DMA registers and LSR | |
2742fd88 | 519 | * |
1da177e4 LT |
520 | * Check the MSBit of the X and Y DMA byte count registers. |
521 | * A zero in this bit indicates that the TX DMA buffers are empty | |
522 | * then check the TX Empty bit in the UART. | |
523 | */ | |
2742fd88 | 524 | static int tx_active(struct edgeport_port *port) |
1da177e4 LT |
525 | { |
526 | int status; | |
527 | struct out_endpoint_desc_block *oedb; | |
528 | __u8 *lsr; | |
529 | int bytes_left = 0; | |
530 | ||
2742fd88 | 531 | oedb = kmalloc(sizeof(*oedb), GFP_KERNEL); |
1da177e4 | 532 | if (!oedb) { |
2742fd88 | 533 | dev_err(&port->port->dev, "%s - out of memory\n", __func__); |
1da177e4 LT |
534 | return -ENOMEM; |
535 | } | |
536 | ||
2742fd88 | 537 | lsr = kmalloc(1, GFP_KERNEL); /* Sigh, that's right, just one byte, |
1da177e4 LT |
538 | as not all platforms can do DMA |
539 | from stack */ | |
540 | if (!lsr) { | |
541 | kfree(oedb); | |
542 | return -ENOMEM; | |
543 | } | |
544 | /* Read the DMA Count Registers */ | |
2742fd88 AC |
545 | status = read_ram(port->port->serial->dev, port->dma_address, |
546 | sizeof(*oedb), (void *)oedb); | |
1da177e4 LT |
547 | if (status) |
548 | goto exit_is_tx_active; | |
549 | ||
2742fd88 | 550 | dbg("%s - XByteCount 0x%X", __func__, oedb->XByteCount); |
1da177e4 LT |
551 | |
552 | /* and the LSR */ | |
2742fd88 AC |
553 | status = read_ram(port->port->serial->dev, |
554 | port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr); | |
1da177e4 LT |
555 | |
556 | if (status) | |
557 | goto exit_is_tx_active; | |
2742fd88 AC |
558 | dbg("%s - LSR = 0x%X", __func__, *lsr); |
559 | ||
1da177e4 | 560 | /* If either buffer has data or we are transmitting then return TRUE */ |
2742fd88 | 561 | if ((oedb->XByteCount & 0x80) != 0) |
1da177e4 LT |
562 | bytes_left += 64; |
563 | ||
2742fd88 | 564 | if ((*lsr & UMP_UART_LSR_TX_MASK) == 0) |
1da177e4 LT |
565 | bytes_left += 1; |
566 | ||
567 | /* We return Not Active if we get any kind of error */ | |
568 | exit_is_tx_active: | |
2742fd88 | 569 | dbg("%s - return %d", __func__, bytes_left); |
1da177e4 LT |
570 | |
571 | kfree(lsr); | |
572 | kfree(oedb); | |
573 | return bytes_left; | |
574 | } | |
575 | ||
2742fd88 AC |
576 | static void chase_port(struct edgeport_port *port, unsigned long timeout, |
577 | int flush) | |
1da177e4 LT |
578 | { |
579 | int baud_rate; | |
4a90f09b | 580 | struct tty_struct *tty = tty_port_tty_get(&port->port->port); |
1da177e4 LT |
581 | wait_queue_t wait; |
582 | unsigned long flags; | |
583 | ||
584 | if (!timeout) | |
2742fd88 | 585 | timeout = (HZ * EDGE_CLOSING_WAIT)/100; |
1da177e4 LT |
586 | |
587 | /* wait for data to drain from the buffer */ | |
588 | spin_lock_irqsave(&port->ep_lock, flags); | |
589 | init_waitqueue_entry(&wait, current); | |
590 | add_wait_queue(&tty->write_wait, &wait); | |
591 | for (;;) { | |
592 | set_current_state(TASK_INTERRUPTIBLE); | |
593 | if (edge_buf_data_avail(port->ep_out_buf) == 0 | |
594 | || timeout == 0 || signal_pending(current) | |
2742fd88 AC |
595 | || !usb_get_intfdata(port->port->serial->interface)) |
596 | /* disconnect */ | |
1da177e4 LT |
597 | break; |
598 | spin_unlock_irqrestore(&port->ep_lock, flags); | |
599 | timeout = schedule_timeout(timeout); | |
600 | spin_lock_irqsave(&port->ep_lock, flags); | |
601 | } | |
602 | set_current_state(TASK_RUNNING); | |
603 | remove_wait_queue(&tty->write_wait, &wait); | |
604 | if (flush) | |
605 | edge_buf_clear(port->ep_out_buf); | |
606 | spin_unlock_irqrestore(&port->ep_lock, flags); | |
4a90f09b | 607 | tty_kref_put(tty); |
1da177e4 LT |
608 | |
609 | /* wait for data to drain from the device */ | |
610 | timeout += jiffies; | |
611 | while ((long)(jiffies - timeout) < 0 && !signal_pending(current) | |
2742fd88 AC |
612 | && usb_get_intfdata(port->port->serial->interface)) { |
613 | /* not disconnected */ | |
614 | if (!tx_active(port)) | |
1da177e4 LT |
615 | break; |
616 | msleep(10); | |
617 | } | |
618 | ||
619 | /* disconnected */ | |
620 | if (!usb_get_intfdata(port->port->serial->interface)) | |
621 | return; | |
622 | ||
623 | /* wait one more character time, based on baud rate */ | |
2742fd88 AC |
624 | /* (tx_active doesn't seem to wait for the last byte) */ |
625 | baud_rate = port->baud_rate; | |
626 | if (baud_rate == 0) | |
1da177e4 | 627 | baud_rate = 50; |
dfa5ec79 | 628 | msleep(max(1, DIV_ROUND_UP(10000, baud_rate))); |
1da177e4 LT |
629 | } |
630 | ||
2742fd88 | 631 | static int choose_config(struct usb_device *dev) |
1da177e4 | 632 | { |
2742fd88 AC |
633 | /* |
634 | * There may be multiple configurations on this device, in which case | |
635 | * we would need to read and parse all of them to find out which one | |
636 | * we want. However, we just support one config at this point, | |
637 | * configuration # 1, which is Config Descriptor 0. | |
638 | */ | |
1da177e4 | 639 | |
2742fd88 AC |
640 | dbg("%s - Number of Interfaces = %d", |
641 | __func__, dev->config->desc.bNumInterfaces); | |
642 | dbg("%s - MAX Power = %d", | |
643 | __func__, dev->config->desc.bMaxPower * 2); | |
1da177e4 LT |
644 | |
645 | if (dev->config->desc.bNumInterfaces != 1) { | |
2742fd88 AC |
646 | dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", |
647 | __func__); | |
1da177e4 LT |
648 | return -ENODEV; |
649 | } | |
650 | ||
651 | return 0; | |
652 | } | |
653 | ||
2742fd88 AC |
654 | static int read_rom(struct edgeport_serial *serial, |
655 | int start_address, int length, __u8 *buffer) | |
1da177e4 LT |
656 | { |
657 | int status; | |
658 | ||
659 | if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { | |
2742fd88 | 660 | status = read_download_mem(serial->serial->dev, |
1da177e4 LT |
661 | start_address, |
662 | length, | |
663 | serial->TI_I2C_Type, | |
664 | buffer); | |
665 | } else { | |
2742fd88 AC |
666 | status = read_boot_mem(serial, start_address, length, |
667 | buffer); | |
1da177e4 | 668 | } |
1da177e4 LT |
669 | return status; |
670 | } | |
671 | ||
2742fd88 AC |
672 | static int write_rom(struct edgeport_serial *serial, int start_address, |
673 | int length, __u8 *buffer) | |
1da177e4 LT |
674 | { |
675 | if (serial->product_info.TiMode == TI_MODE_BOOT) | |
2742fd88 AC |
676 | return write_boot_mem(serial, start_address, length, |
677 | buffer); | |
1da177e4 LT |
678 | |
679 | if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) | |
2742fd88 AC |
680 | return write_i2c_mem(serial, start_address, length, |
681 | serial->TI_I2C_Type, buffer); | |
1da177e4 LT |
682 | return -EINVAL; |
683 | } | |
684 | ||
685 | ||
686 | ||
687 | /* Read a descriptor header from I2C based on type */ | |
2742fd88 AC |
688 | static int get_descriptor_addr(struct edgeport_serial *serial, |
689 | int desc_type, struct ti_i2c_desc *rom_desc) | |
1da177e4 LT |
690 | { |
691 | int start_address; | |
692 | int status; | |
693 | ||
694 | /* Search for requested descriptor in I2C */ | |
695 | start_address = 2; | |
696 | do { | |
2742fd88 | 697 | status = read_rom(serial, |
1da177e4 LT |
698 | start_address, |
699 | sizeof(struct ti_i2c_desc), | |
2742fd88 | 700 | (__u8 *)rom_desc); |
1da177e4 LT |
701 | if (status) |
702 | return 0; | |
703 | ||
704 | if (rom_desc->Type == desc_type) | |
705 | return start_address; | |
706 | ||
2742fd88 AC |
707 | start_address = start_address + sizeof(struct ti_i2c_desc) |
708 | + rom_desc->Size; | |
1da177e4 LT |
709 | |
710 | } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type); | |
2742fd88 | 711 | |
1da177e4 LT |
712 | return 0; |
713 | } | |
714 | ||
715 | /* Validate descriptor checksum */ | |
2742fd88 | 716 | static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer) |
1da177e4 LT |
717 | { |
718 | __u16 i; | |
719 | __u8 cs = 0; | |
720 | ||
2742fd88 | 721 | for (i = 0; i < rom_desc->Size; i++) |
1da177e4 | 722 | cs = (__u8)(cs + buffer[i]); |
2742fd88 | 723 | |
1da177e4 | 724 | if (cs != rom_desc->CheckSum) { |
2742fd88 | 725 | dbg("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs); |
1da177e4 LT |
726 | return -EINVAL; |
727 | } | |
728 | return 0; | |
729 | } | |
730 | ||
731 | /* Make sure that the I2C image is good */ | |
2742fd88 | 732 | static int check_i2c_image(struct edgeport_serial *serial) |
1da177e4 LT |
733 | { |
734 | struct device *dev = &serial->serial->dev->dev; | |
735 | int status = 0; | |
736 | struct ti_i2c_desc *rom_desc; | |
737 | int start_address = 2; | |
738 | __u8 *buffer; | |
739 | __u16 ttype; | |
740 | ||
2742fd88 | 741 | rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); |
1da177e4 | 742 | if (!rom_desc) { |
2742fd88 | 743 | dev_err(dev, "%s - out of memory\n", __func__); |
1da177e4 LT |
744 | return -ENOMEM; |
745 | } | |
2742fd88 | 746 | buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL); |
1da177e4 | 747 | if (!buffer) { |
2742fd88 AC |
748 | dev_err(dev, "%s - out of memory when allocating buffer\n", |
749 | __func__); | |
750 | kfree(rom_desc); | |
1da177e4 LT |
751 | return -ENOMEM; |
752 | } | |
753 | ||
2742fd88 AC |
754 | /* Read the first byte (Signature0) must be 0x52 or 0x10 */ |
755 | status = read_rom(serial, 0, 1, buffer); | |
1da177e4 | 756 | if (status) |
2742fd88 | 757 | goto out; |
1da177e4 LT |
758 | |
759 | if (*buffer != UMP5152 && *buffer != UMP3410) { | |
2742fd88 | 760 | dev_err(dev, "%s - invalid buffer signature\n", __func__); |
1da177e4 | 761 | status = -ENODEV; |
2742fd88 | 762 | goto out; |
1da177e4 LT |
763 | } |
764 | ||
765 | do { | |
2742fd88 AC |
766 | /* Validate the I2C */ |
767 | status = read_rom(serial, | |
1da177e4 LT |
768 | start_address, |
769 | sizeof(struct ti_i2c_desc), | |
770 | (__u8 *)rom_desc); | |
771 | if (status) | |
772 | break; | |
773 | ||
2742fd88 AC |
774 | if ((start_address + sizeof(struct ti_i2c_desc) + |
775 | rom_desc->Size) > TI_MAX_I2C_SIZE) { | |
1da177e4 | 776 | status = -ENODEV; |
2742fd88 | 777 | dbg("%s - structure too big, erroring out.", __func__); |
1da177e4 LT |
778 | break; |
779 | } | |
780 | ||
2742fd88 | 781 | dbg("%s Type = 0x%x", __func__, rom_desc->Type); |
1da177e4 | 782 | |
2742fd88 | 783 | /* Skip type 2 record */ |
1da177e4 | 784 | ttype = rom_desc->Type & 0x0f; |
2742fd88 AC |
785 | if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC |
786 | && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) { | |
787 | /* Read the descriptor data */ | |
788 | status = read_rom(serial, start_address + | |
789 | sizeof(struct ti_i2c_desc), | |
790 | rom_desc->Size, buffer); | |
1da177e4 LT |
791 | if (status) |
792 | break; | |
793 | ||
2742fd88 | 794 | status = valid_csum(rom_desc, buffer); |
1da177e4 LT |
795 | if (status) |
796 | break; | |
797 | } | |
2742fd88 AC |
798 | start_address = start_address + sizeof(struct ti_i2c_desc) + |
799 | rom_desc->Size; | |
1da177e4 | 800 | |
2742fd88 AC |
801 | } while ((rom_desc->Type != I2C_DESC_TYPE_ION) && |
802 | (start_address < TI_MAX_I2C_SIZE)); | |
1da177e4 | 803 | |
2742fd88 AC |
804 | if ((rom_desc->Type != I2C_DESC_TYPE_ION) || |
805 | (start_address > TI_MAX_I2C_SIZE)) | |
1da177e4 LT |
806 | status = -ENODEV; |
807 | ||
2742fd88 AC |
808 | out: |
809 | kfree(buffer); | |
810 | kfree(rom_desc); | |
1da177e4 LT |
811 | return status; |
812 | } | |
813 | ||
2742fd88 | 814 | static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer) |
1da177e4 LT |
815 | { |
816 | int status; | |
817 | int start_address; | |
818 | struct ti_i2c_desc *rom_desc; | |
819 | struct edge_ti_manuf_descriptor *desc; | |
820 | ||
2742fd88 | 821 | rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); |
1da177e4 | 822 | if (!rom_desc) { |
2742fd88 AC |
823 | dev_err(&serial->serial->dev->dev, "%s - out of memory\n", |
824 | __func__); | |
1da177e4 LT |
825 | return -ENOMEM; |
826 | } | |
2742fd88 AC |
827 | start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION, |
828 | rom_desc); | |
1da177e4 LT |
829 | |
830 | if (!start_address) { | |
2742fd88 | 831 | dbg("%s - Edge Descriptor not found in I2C", __func__); |
1da177e4 LT |
832 | status = -ENODEV; |
833 | goto exit; | |
834 | } | |
835 | ||
2742fd88 AC |
836 | /* Read the descriptor data */ |
837 | status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc), | |
838 | rom_desc->Size, buffer); | |
1da177e4 LT |
839 | if (status) |
840 | goto exit; | |
2742fd88 AC |
841 | |
842 | status = valid_csum(rom_desc, buffer); | |
843 | ||
1da177e4 | 844 | desc = (struct edge_ti_manuf_descriptor *)buffer; |
2742fd88 AC |
845 | dbg("%s - IonConfig 0x%x", __func__, desc->IonConfig); |
846 | dbg("%s - Version %d", __func__, desc->Version); | |
847 | dbg("%s - Cpu/Board 0x%x", __func__, desc->CpuRev_BoardRev); | |
848 | dbg("%s - NumPorts %d", __func__, desc->NumPorts); | |
849 | dbg("%s - NumVirtualPorts %d", __func__, desc->NumVirtualPorts); | |
850 | dbg("%s - TotalPorts %d", __func__, desc->TotalPorts); | |
1da177e4 LT |
851 | |
852 | exit: | |
2742fd88 | 853 | kfree(rom_desc); |
1da177e4 LT |
854 | return status; |
855 | } | |
856 | ||
857 | /* Build firmware header used for firmware update */ | |
2742fd88 | 858 | static int build_i2c_fw_hdr(__u8 *header, struct device *dev) |
1da177e4 LT |
859 | { |
860 | __u8 *buffer; | |
861 | int buffer_size; | |
862 | int i; | |
d12b219a | 863 | int err; |
1da177e4 LT |
864 | __u8 cs = 0; |
865 | struct ti_i2c_desc *i2c_header; | |
866 | struct ti_i2c_image_header *img_header; | |
867 | struct ti_i2c_firmware_rec *firmware_rec; | |
d12b219a JS |
868 | const struct firmware *fw; |
869 | const char *fw_name = "edgeport/down3.bin"; | |
1da177e4 | 870 | |
2742fd88 AC |
871 | /* In order to update the I2C firmware we must change the type 2 record |
872 | * to type 0xF2. This will force the UMP to come up in Boot Mode. | |
873 | * Then while in boot mode, the driver will download the latest | |
874 | * firmware (padded to 15.5k) into the UMP ram. And finally when the | |
875 | * device comes back up in download mode the driver will cause the new | |
876 | * firmware to be copied from the UMP Ram to I2C and the firmware will | |
877 | * update the record type from 0xf2 to 0x02. | |
878 | */ | |
879 | ||
880 | /* Allocate a 15.5k buffer + 2 bytes for version number | |
881 | * (Firmware Record) */ | |
882 | buffer_size = (((1024 * 16) - 512 ) + | |
883 | sizeof(struct ti_i2c_firmware_rec)); | |
884 | ||
885 | buffer = kmalloc(buffer_size, GFP_KERNEL); | |
1da177e4 | 886 | if (!buffer) { |
2742fd88 | 887 | dev_err(dev, "%s - out of memory\n", __func__); |
1da177e4 LT |
888 | return -ENOMEM; |
889 | } | |
2742fd88 | 890 | |
1da177e4 | 891 | // Set entire image of 0xffs |
2742fd88 | 892 | memset(buffer, 0xff, buffer_size); |
1da177e4 | 893 | |
d12b219a JS |
894 | err = request_firmware(&fw, fw_name, dev); |
895 | if (err) { | |
896 | printk(KERN_ERR "Failed to load image \"%s\" err %d\n", | |
897 | fw_name, err); | |
898 | kfree(buffer); | |
899 | return err; | |
900 | } | |
901 | ||
902 | /* Save Download Version Number */ | |
903 | OperationalMajorVersion = fw->data[0]; | |
904 | OperationalMinorVersion = fw->data[1]; | |
905 | OperationalBuildNumber = fw->data[2] | (fw->data[3] << 8); | |
906 | ||
2742fd88 | 907 | /* Copy version number into firmware record */ |
1da177e4 LT |
908 | firmware_rec = (struct ti_i2c_firmware_rec *)buffer; |
909 | ||
d12b219a JS |
910 | firmware_rec->Ver_Major = OperationalMajorVersion; |
911 | firmware_rec->Ver_Minor = OperationalMinorVersion; | |
1da177e4 | 912 | |
2742fd88 | 913 | /* Pointer to fw_down memory image */ |
d12b219a | 914 | img_header = (struct ti_i2c_image_header *)&fw->data[4]; |
1da177e4 | 915 | |
2742fd88 | 916 | memcpy(buffer + sizeof(struct ti_i2c_firmware_rec), |
d12b219a | 917 | &fw->data[4 + sizeof(struct ti_i2c_image_header)], |
1da177e4 LT |
918 | le16_to_cpu(img_header->Length)); |
919 | ||
d12b219a JS |
920 | release_firmware(fw); |
921 | ||
1da177e4 LT |
922 | for (i=0; i < buffer_size; i++) { |
923 | cs = (__u8)(cs + buffer[i]); | |
924 | } | |
925 | ||
2742fd88 | 926 | kfree(buffer); |
1da177e4 | 927 | |
2742fd88 | 928 | /* Build new header */ |
1da177e4 LT |
929 | i2c_header = (struct ti_i2c_desc *)header; |
930 | firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data; | |
2742fd88 | 931 | |
1da177e4 LT |
932 | i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK; |
933 | i2c_header->Size = (__u16)buffer_size; | |
934 | i2c_header->CheckSum = cs; | |
d12b219a JS |
935 | firmware_rec->Ver_Major = OperationalMajorVersion; |
936 | firmware_rec->Ver_Minor = OperationalMinorVersion; | |
1da177e4 LT |
937 | |
938 | return 0; | |
939 | } | |
940 | ||
941 | /* Try to figure out what type of I2c we have */ | |
2742fd88 | 942 | static int i2c_type_bootmode(struct edgeport_serial *serial) |
1da177e4 LT |
943 | { |
944 | int status; | |
e9305d2f JH |
945 | u8 *data; |
946 | ||
947 | data = kmalloc(1, GFP_KERNEL); | |
948 | if (!data) { | |
949 | dev_err(&serial->serial->dev->dev, | |
950 | "%s - out of memory\n", __func__); | |
951 | return -ENOMEM; | |
952 | } | |
2742fd88 AC |
953 | |
954 | /* Try to read type 2 */ | |
955 | status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, | |
e9305d2f | 956 | DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01); |
1da177e4 | 957 | if (status) |
2742fd88 | 958 | dbg("%s - read 2 status error = %d", __func__, status); |
1da177e4 | 959 | else |
e9305d2f JH |
960 | dbg("%s - read 2 data = 0x%x", __func__, *data); |
961 | if ((!status) && (*data == UMP5152 || *data == UMP3410)) { | |
2742fd88 | 962 | dbg("%s - ROM_TYPE_II", __func__); |
1da177e4 | 963 | serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; |
e9305d2f | 964 | goto out; |
1da177e4 LT |
965 | } |
966 | ||
2742fd88 AC |
967 | /* Try to read type 3 */ |
968 | status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, | |
e9305d2f | 969 | DTK_ADDR_SPACE_I2C_TYPE_III, 0, data, 0x01); |
1da177e4 | 970 | if (status) |
2742fd88 | 971 | dbg("%s - read 3 status error = %d", __func__, status); |
1da177e4 | 972 | else |
e9305d2f JH |
973 | dbg("%s - read 2 data = 0x%x", __func__, *data); |
974 | if ((!status) && (*data == UMP5152 || *data == UMP3410)) { | |
2742fd88 | 975 | dbg("%s - ROM_TYPE_III", __func__); |
1da177e4 | 976 | serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III; |
e9305d2f | 977 | goto out; |
1da177e4 LT |
978 | } |
979 | ||
2742fd88 | 980 | dbg("%s - Unknown", __func__); |
1da177e4 | 981 | serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; |
e9305d2f JH |
982 | status = -ENODEV; |
983 | out: | |
984 | kfree(data); | |
985 | return status; | |
1da177e4 LT |
986 | } |
987 | ||
2742fd88 AC |
988 | static int bulk_xfer(struct usb_serial *serial, void *buffer, |
989 | int length, int *num_sent) | |
1da177e4 LT |
990 | { |
991 | int status; | |
992 | ||
2742fd88 AC |
993 | status = usb_bulk_msg(serial->dev, |
994 | usb_sndbulkpipe(serial->dev, | |
995 | serial->port[0]->bulk_out_endpointAddress), | |
996 | buffer, length, num_sent, 1000); | |
1da177e4 LT |
997 | return status; |
998 | } | |
999 | ||
1000 | /* Download given firmware image to the device (IN BOOT MODE) */ | |
2742fd88 AC |
1001 | static int download_code(struct edgeport_serial *serial, __u8 *image, |
1002 | int image_length) | |
1da177e4 LT |
1003 | { |
1004 | int status = 0; | |
1005 | int pos; | |
1006 | int transfer; | |
1007 | int done; | |
1008 | ||
2742fd88 | 1009 | /* Transfer firmware image */ |
1da177e4 | 1010 | for (pos = 0; pos < image_length; ) { |
2742fd88 | 1011 | /* Read the next buffer from file */ |
1da177e4 LT |
1012 | transfer = image_length - pos; |
1013 | if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE) | |
1014 | transfer = EDGE_FW_BULK_MAX_PACKET_SIZE; | |
1015 | ||
2742fd88 AC |
1016 | /* Transfer data */ |
1017 | status = bulk_xfer(serial->serial, &image[pos], | |
1018 | transfer, &done); | |
1da177e4 LT |
1019 | if (status) |
1020 | break; | |
2742fd88 | 1021 | /* Advance buffer pointer */ |
1da177e4 LT |
1022 | pos += done; |
1023 | } | |
1024 | ||
1025 | return status; | |
1026 | } | |
1027 | ||
2742fd88 AC |
1028 | /* FIXME!!! */ |
1029 | static int config_boot_dev(struct usb_device *dev) | |
1da177e4 LT |
1030 | { |
1031 | return 0; | |
1032 | } | |
1033 | ||
2742fd88 AC |
1034 | static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc) |
1035 | { | |
1036 | return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev); | |
1037 | } | |
1038 | ||
1da177e4 LT |
1039 | /** |
1040 | * DownloadTIFirmware - Download run-time operating firmware to the TI5052 | |
2742fd88 | 1041 | * |
1da177e4 LT |
1042 | * This routine downloads the main operating code into the TI5052, using the |
1043 | * boot code already burned into E2PROM or ROM. | |
1044 | */ | |
2742fd88 | 1045 | static int download_fw(struct edgeport_serial *serial) |
1da177e4 LT |
1046 | { |
1047 | struct device *dev = &serial->serial->dev->dev; | |
1048 | int status = 0; | |
1049 | int start_address; | |
1050 | struct edge_ti_manuf_descriptor *ti_manuf_desc; | |
1051 | struct usb_interface_descriptor *interface; | |
1052 | int download_cur_ver; | |
1053 | int download_new_ver; | |
1054 | ||
1055 | /* This routine is entered by both the BOOT mode and the Download mode | |
1056 | * We can determine which code is running by the reading the config | |
1057 | * descriptor and if we have only one bulk pipe it is in boot mode | |
1058 | */ | |
1059 | serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP; | |
1060 | ||
1061 | /* Default to type 2 i2c */ | |
1062 | serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; | |
1063 | ||
2742fd88 | 1064 | status = choose_config(serial->serial->dev); |
1da177e4 LT |
1065 | if (status) |
1066 | return status; | |
1067 | ||
1068 | interface = &serial->serial->interface->cur_altsetting->desc; | |
1069 | if (!interface) { | |
2742fd88 | 1070 | dev_err(dev, "%s - no interface set, error!\n", __func__); |
1da177e4 LT |
1071 | return -ENODEV; |
1072 | } | |
1073 | ||
2742fd88 AC |
1074 | /* |
1075 | * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING | |
1076 | * if we have more than one endpoint we are definitely in download | |
1077 | * mode | |
1078 | */ | |
1da177e4 LT |
1079 | if (interface->bNumEndpoints > 1) |
1080 | serial->product_info.TiMode = TI_MODE_DOWNLOAD; | |
1081 | else | |
2742fd88 | 1082 | /* Otherwise we will remain in configuring mode */ |
1da177e4 LT |
1083 | serial->product_info.TiMode = TI_MODE_CONFIGURING; |
1084 | ||
1da177e4 LT |
1085 | /********************************************************************/ |
1086 | /* Download Mode */ | |
1087 | /********************************************************************/ | |
1088 | if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { | |
1089 | struct ti_i2c_desc *rom_desc; | |
1090 | ||
9544e833 | 1091 | dbg("%s - RUNNING IN DOWNLOAD MODE", __func__); |
1da177e4 | 1092 | |
2742fd88 | 1093 | status = check_i2c_image(serial); |
1da177e4 | 1094 | if (status) { |
9544e833 | 1095 | dbg("%s - DOWNLOAD MODE -- BAD I2C", __func__); |
1da177e4 LT |
1096 | return status; |
1097 | } | |
2742fd88 | 1098 | |
1da177e4 LT |
1099 | /* Validate Hardware version number |
1100 | * Read Manufacturing Descriptor from TI Based Edgeport | |
1101 | */ | |
2742fd88 | 1102 | ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL); |
1da177e4 | 1103 | if (!ti_manuf_desc) { |
2742fd88 | 1104 | dev_err(dev, "%s - out of memory.\n", __func__); |
1da177e4 LT |
1105 | return -ENOMEM; |
1106 | } | |
2742fd88 | 1107 | status = get_manuf_info(serial, (__u8 *)ti_manuf_desc); |
1da177e4 | 1108 | if (status) { |
2742fd88 | 1109 | kfree(ti_manuf_desc); |
1da177e4 LT |
1110 | return status; |
1111 | } | |
1112 | ||
2742fd88 AC |
1113 | /* Check version number of ION descriptor */ |
1114 | if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { | |
1115 | dbg("%s - Wrong CPU Rev %d (Must be 2)", | |
1116 | __func__, ti_cpu_rev(ti_manuf_desc)); | |
1117 | kfree(ti_manuf_desc); | |
1118 | return -EINVAL; | |
1119 | } | |
1da177e4 | 1120 | |
2742fd88 | 1121 | rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); |
1da177e4 | 1122 | if (!rom_desc) { |
2742fd88 AC |
1123 | dev_err(dev, "%s - out of memory.\n", __func__); |
1124 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1125 | return -ENOMEM; |
1126 | } | |
1127 | ||
2742fd88 AC |
1128 | /* Search for type 2 record (firmware record) */ |
1129 | start_address = get_descriptor_addr(serial, | |
1130 | I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc); | |
1131 | if (start_address != 0) { | |
1da177e4 | 1132 | struct ti_i2c_firmware_rec *firmware_version; |
e9305d2f | 1133 | u8 *record; |
1da177e4 | 1134 | |
2742fd88 AC |
1135 | dbg("%s - Found Type FIRMWARE (Type 2) record", |
1136 | __func__); | |
1da177e4 | 1137 | |
2742fd88 AC |
1138 | firmware_version = kmalloc(sizeof(*firmware_version), |
1139 | GFP_KERNEL); | |
1da177e4 | 1140 | if (!firmware_version) { |
2742fd88 AC |
1141 | dev_err(dev, "%s - out of memory.\n", __func__); |
1142 | kfree(rom_desc); | |
1143 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1144 | return -ENOMEM; |
1145 | } | |
1146 | ||
2742fd88 AC |
1147 | /* Validate version number |
1148 | * Read the descriptor data | |
1149 | */ | |
1150 | status = read_rom(serial, start_address + | |
1151 | sizeof(struct ti_i2c_desc), | |
1da177e4 LT |
1152 | sizeof(struct ti_i2c_firmware_rec), |
1153 | (__u8 *)firmware_version); | |
1154 | if (status) { | |
2742fd88 AC |
1155 | kfree(firmware_version); |
1156 | kfree(rom_desc); | |
1157 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1158 | return status; |
1159 | } | |
1160 | ||
2742fd88 AC |
1161 | /* Check version number of download with current |
1162 | version in I2c */ | |
1163 | download_cur_ver = (firmware_version->Ver_Major << 8) + | |
1da177e4 | 1164 | (firmware_version->Ver_Minor); |
d12b219a JS |
1165 | download_new_ver = (OperationalMajorVersion << 8) + |
1166 | (OperationalMinorVersion); | |
1da177e4 | 1167 | |
2742fd88 AC |
1168 | dbg("%s - >> FW Versions Device %d.%d Driver %d.%d", |
1169 | __func__, | |
1170 | firmware_version->Ver_Major, | |
1171 | firmware_version->Ver_Minor, | |
1172 | OperationalMajorVersion, | |
1173 | OperationalMinorVersion); | |
1da177e4 | 1174 | |
2742fd88 AC |
1175 | /* Check if we have an old version in the I2C and |
1176 | update if necessary */ | |
1da177e4 | 1177 | if (download_cur_ver != download_new_ver) { |
2742fd88 AC |
1178 | dbg("%s - Update I2C dld from %d.%d to %d.%d", |
1179 | __func__, | |
1180 | firmware_version->Ver_Major, | |
1181 | firmware_version->Ver_Minor, | |
1182 | OperationalMajorVersion, | |
1183 | OperationalMinorVersion); | |
1184 | ||
e9305d2f JH |
1185 | record = kmalloc(1, GFP_KERNEL); |
1186 | if (!record) { | |
1187 | dev_err(dev, "%s - out of memory.\n", | |
1188 | __func__); | |
1189 | kfree(firmware_version); | |
1190 | kfree(rom_desc); | |
1191 | kfree(ti_manuf_desc); | |
1192 | return -ENOMEM; | |
1193 | } | |
2742fd88 AC |
1194 | /* In order to update the I2C firmware we must |
1195 | * change the type 2 record to type 0xF2. This | |
1196 | * will force the UMP to come up in Boot Mode. | |
1197 | * Then while in boot mode, the driver will | |
1198 | * download the latest firmware (padded to | |
1199 | * 15.5k) into the UMP ram. Finally when the | |
1200 | * device comes back up in download mode the | |
1201 | * driver will cause the new firmware to be | |
1202 | * copied from the UMP Ram to I2C and the | |
1203 | * firmware will update the record type from | |
1204 | * 0xf2 to 0x02. | |
1205 | */ | |
e9305d2f | 1206 | *record = I2C_DESC_TYPE_FIRMWARE_BLANK; |
1da177e4 | 1207 | |
2742fd88 AC |
1208 | /* Change the I2C Firmware record type to |
1209 | 0xf2 to trigger an update */ | |
1210 | status = write_rom(serial, start_address, | |
e9305d2f | 1211 | sizeof(*record), record); |
1da177e4 | 1212 | if (status) { |
e9305d2f | 1213 | kfree(record); |
2742fd88 AC |
1214 | kfree(firmware_version); |
1215 | kfree(rom_desc); | |
1216 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1217 | return status; |
1218 | } | |
1219 | ||
2742fd88 AC |
1220 | /* verify the write -- must do this in order |
1221 | * for write to complete before we do the | |
1222 | * hardware reset | |
1223 | */ | |
1224 | status = read_rom(serial, | |
1da177e4 | 1225 | start_address, |
e9305d2f JH |
1226 | sizeof(*record), |
1227 | record); | |
1da177e4 | 1228 | if (status) { |
e9305d2f | 1229 | kfree(record); |
2742fd88 AC |
1230 | kfree(firmware_version); |
1231 | kfree(rom_desc); | |
1232 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1233 | return status; |
1234 | } | |
1235 | ||
e9305d2f | 1236 | if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) { |
2742fd88 AC |
1237 | dev_err(dev, |
1238 | "%s - error resetting device\n", | |
1239 | __func__); | |
e9305d2f | 1240 | kfree(record); |
2742fd88 AC |
1241 | kfree(firmware_version); |
1242 | kfree(rom_desc); | |
1243 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1244 | return -ENODEV; |
1245 | } | |
1246 | ||
2742fd88 | 1247 | dbg("%s - HARDWARE RESET", __func__); |
1da177e4 | 1248 | |
2742fd88 AC |
1249 | /* Reset UMP -- Back to BOOT MODE */ |
1250 | status = ti_vsend_sync(serial->serial->dev, | |
1251 | UMPC_HARDWARE_RESET, | |
1252 | 0, 0, NULL, 0); | |
1da177e4 | 1253 | |
2742fd88 AC |
1254 | dbg("%s - HARDWARE RESET return %d", |
1255 | __func__, status); | |
1da177e4 LT |
1256 | |
1257 | /* return an error on purpose. */ | |
e9305d2f | 1258 | kfree(record); |
2742fd88 AC |
1259 | kfree(firmware_version); |
1260 | kfree(rom_desc); | |
1261 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1262 | return -ENODEV; |
1263 | } | |
2742fd88 | 1264 | kfree(firmware_version); |
1da177e4 | 1265 | } |
2742fd88 AC |
1266 | /* Search for type 0xF2 record (firmware blank record) */ |
1267 | else if ((start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) { | |
1268 | #define HEADER_SIZE (sizeof(struct ti_i2c_desc) + \ | |
1269 | sizeof(struct ti_i2c_firmware_rec)) | |
1da177e4 LT |
1270 | __u8 *header; |
1271 | __u8 *vheader; | |
1272 | ||
2742fd88 | 1273 | header = kmalloc(HEADER_SIZE, GFP_KERNEL); |
1da177e4 | 1274 | if (!header) { |
2742fd88 AC |
1275 | dev_err(dev, "%s - out of memory.\n", __func__); |
1276 | kfree(rom_desc); | |
1277 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1278 | return -ENOMEM; |
1279 | } | |
2742fd88 AC |
1280 | |
1281 | vheader = kmalloc(HEADER_SIZE, GFP_KERNEL); | |
1da177e4 | 1282 | if (!vheader) { |
2742fd88 AC |
1283 | dev_err(dev, "%s - out of memory.\n", __func__); |
1284 | kfree(header); | |
1285 | kfree(rom_desc); | |
1286 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1287 | return -ENOMEM; |
1288 | } | |
2742fd88 AC |
1289 | |
1290 | dbg("%s - Found Type BLANK FIRMWARE (Type F2) record", | |
1291 | __func__); | |
1292 | ||
1293 | /* | |
1294 | * In order to update the I2C firmware we must change | |
1295 | * the type 2 record to type 0xF2. This will force the | |
1296 | * UMP to come up in Boot Mode. Then while in boot | |
1297 | * mode, the driver will download the latest firmware | |
1298 | * (padded to 15.5k) into the UMP ram. Finally when the | |
1299 | * device comes back up in download mode the driver | |
1300 | * will cause the new firmware to be copied from the | |
1301 | * UMP Ram to I2C and the firmware will update the | |
1302 | * record type from 0xf2 to 0x02. | |
1303 | */ | |
1304 | status = build_i2c_fw_hdr(header, dev); | |
1da177e4 | 1305 | if (status) { |
2742fd88 AC |
1306 | kfree(vheader); |
1307 | kfree(header); | |
1308 | kfree(rom_desc); | |
1309 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1310 | return status; |
1311 | } | |
1312 | ||
2742fd88 AC |
1313 | /* Update I2C with type 0xf2 record with correct |
1314 | size and checksum */ | |
1315 | status = write_rom(serial, | |
1da177e4 LT |
1316 | start_address, |
1317 | HEADER_SIZE, | |
1318 | header); | |
1319 | if (status) { | |
2742fd88 AC |
1320 | kfree(vheader); |
1321 | kfree(header); | |
1322 | kfree(rom_desc); | |
1323 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1324 | return status; |
1325 | } | |
1326 | ||
2742fd88 AC |
1327 | /* verify the write -- must do this in order for |
1328 | write to complete before we do the hardware reset */ | |
1329 | status = read_rom(serial, start_address, | |
1330 | HEADER_SIZE, vheader); | |
1da177e4 LT |
1331 | |
1332 | if (status) { | |
2742fd88 AC |
1333 | dbg("%s - can't read header back", __func__); |
1334 | kfree(vheader); | |
1335 | kfree(header); | |
1336 | kfree(rom_desc); | |
1337 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1338 | return status; |
1339 | } | |
1340 | if (memcmp(vheader, header, HEADER_SIZE)) { | |
2742fd88 AC |
1341 | dbg("%s - write download record failed", |
1342 | __func__); | |
1343 | kfree(vheader); | |
1344 | kfree(header); | |
1345 | kfree(rom_desc); | |
1346 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1347 | return status; |
1348 | } | |
1349 | ||
2742fd88 AC |
1350 | kfree(vheader); |
1351 | kfree(header); | |
1da177e4 | 1352 | |
2742fd88 | 1353 | dbg("%s - Start firmware update", __func__); |
1da177e4 | 1354 | |
2742fd88 AC |
1355 | /* Tell firmware to copy download image into I2C */ |
1356 | status = ti_vsend_sync(serial->serial->dev, | |
1357 | UMPC_COPY_DNLD_TO_I2C, 0, 0, NULL, 0); | |
1da177e4 | 1358 | |
2742fd88 | 1359 | dbg("%s - Update complete 0x%x", __func__, status); |
1da177e4 | 1360 | if (status) { |
2742fd88 AC |
1361 | dev_err(dev, |
1362 | "%s - UMPC_COPY_DNLD_TO_I2C failed\n", | |
1363 | __func__); | |
1364 | kfree(rom_desc); | |
1365 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1366 | return status; |
1367 | } | |
1368 | } | |
1369 | ||
1370 | // The device is running the download code | |
2742fd88 AC |
1371 | kfree(rom_desc); |
1372 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1373 | return 0; |
1374 | } | |
1375 | ||
1376 | /********************************************************************/ | |
1377 | /* Boot Mode */ | |
1378 | /********************************************************************/ | |
9544e833 | 1379 | dbg("%s - RUNNING IN BOOT MODE", __func__); |
1da177e4 | 1380 | |
2742fd88 AC |
1381 | /* Configure the TI device so we can use the BULK pipes for download */ |
1382 | status = config_boot_dev(serial->serial->dev); | |
1da177e4 LT |
1383 | if (status) |
1384 | return status; | |
1385 | ||
2742fd88 AC |
1386 | if (le16_to_cpu(serial->serial->dev->descriptor.idVendor) |
1387 | != USB_VENDOR_ID_ION) { | |
1388 | dbg("%s - VID = 0x%x", __func__, | |
1da177e4 LT |
1389 | le16_to_cpu(serial->serial->dev->descriptor.idVendor)); |
1390 | serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; | |
2742fd88 | 1391 | goto stayinbootmode; |
1da177e4 LT |
1392 | } |
1393 | ||
2742fd88 AC |
1394 | /* We have an ION device (I2c Must be programmed) |
1395 | Determine I2C image type */ | |
1396 | if (i2c_type_bootmode(serial)) | |
1397 | goto stayinbootmode; | |
1da177e4 | 1398 | |
2742fd88 AC |
1399 | /* Check for ION Vendor ID and that the I2C is valid */ |
1400 | if (!check_i2c_image(serial)) { | |
1da177e4 LT |
1401 | struct ti_i2c_image_header *header; |
1402 | int i; | |
1403 | __u8 cs = 0; | |
1404 | __u8 *buffer; | |
1405 | int buffer_size; | |
d12b219a JS |
1406 | int err; |
1407 | const struct firmware *fw; | |
1408 | const char *fw_name = "edgeport/down3.bin"; | |
1da177e4 LT |
1409 | |
1410 | /* Validate Hardware version number | |
1411 | * Read Manufacturing Descriptor from TI Based Edgeport | |
1412 | */ | |
2742fd88 | 1413 | ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL); |
1da177e4 | 1414 | if (!ti_manuf_desc) { |
2742fd88 | 1415 | dev_err(dev, "%s - out of memory.\n", __func__); |
1da177e4 LT |
1416 | return -ENOMEM; |
1417 | } | |
2742fd88 | 1418 | status = get_manuf_info(serial, (__u8 *)ti_manuf_desc); |
1da177e4 | 1419 | if (status) { |
2742fd88 AC |
1420 | kfree(ti_manuf_desc); |
1421 | goto stayinbootmode; | |
1da177e4 LT |
1422 | } |
1423 | ||
2742fd88 AC |
1424 | /* Check for version 2 */ |
1425 | if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { | |
1426 | dbg("%s - Wrong CPU Rev %d (Must be 2)", | |
1427 | __func__, ti_cpu_rev(ti_manuf_desc)); | |
1428 | kfree(ti_manuf_desc); | |
1429 | goto stayinbootmode; | |
1da177e4 LT |
1430 | } |
1431 | ||
2742fd88 | 1432 | kfree(ti_manuf_desc); |
1da177e4 | 1433 | |
1da177e4 | 1434 | /* |
2742fd88 AC |
1435 | * In order to update the I2C firmware we must change the type |
1436 | * 2 record to type 0xF2. This will force the UMP to come up | |
1437 | * in Boot Mode. Then while in boot mode, the driver will | |
1438 | * download the latest firmware (padded to 15.5k) into the | |
1439 | * UMP ram. Finally when the device comes back up in download | |
1440 | * mode the driver will cause the new firmware to be copied | |
1441 | * from the UMP Ram to I2C and the firmware will update the | |
1442 | * record type from 0xf2 to 0x02. | |
1443 | * | |
1da177e4 LT |
1444 | * Do we really have to copy the whole firmware image, |
1445 | * or could we do this in place! | |
1446 | */ | |
1447 | ||
2742fd88 AC |
1448 | /* Allocate a 15.5k buffer + 3 byte header */ |
1449 | buffer_size = (((1024 * 16) - 512) + | |
1450 | sizeof(struct ti_i2c_image_header)); | |
1451 | buffer = kmalloc(buffer_size, GFP_KERNEL); | |
1da177e4 | 1452 | if (!buffer) { |
2742fd88 | 1453 | dev_err(dev, "%s - out of memory\n", __func__); |
1da177e4 LT |
1454 | return -ENOMEM; |
1455 | } | |
2742fd88 AC |
1456 | |
1457 | /* Initialize the buffer to 0xff (pad the buffer) */ | |
1458 | memset(buffer, 0xff, buffer_size); | |
1da177e4 | 1459 | |
d12b219a JS |
1460 | err = request_firmware(&fw, fw_name, dev); |
1461 | if (err) { | |
1462 | printk(KERN_ERR "Failed to load image \"%s\" err %d\n", | |
1463 | fw_name, err); | |
1464 | kfree(buffer); | |
1465 | return err; | |
1466 | } | |
1467 | memcpy(buffer, &fw->data[4], fw->size - 4); | |
1468 | release_firmware(fw); | |
1da177e4 | 1469 | |
2742fd88 AC |
1470 | for (i = sizeof(struct ti_i2c_image_header); |
1471 | i < buffer_size; i++) { | |
1da177e4 LT |
1472 | cs = (__u8)(cs + buffer[i]); |
1473 | } | |
2742fd88 | 1474 | |
1da177e4 | 1475 | header = (struct ti_i2c_image_header *)buffer; |
2742fd88 AC |
1476 | |
1477 | /* update length and checksum after padding */ | |
1478 | header->Length = cpu_to_le16((__u16)(buffer_size - | |
1479 | sizeof(struct ti_i2c_image_header))); | |
1da177e4 LT |
1480 | header->CheckSum = cs; |
1481 | ||
2742fd88 AC |
1482 | /* Download the operational code */ |
1483 | dbg("%s - Downloading operational code image (TI UMP)", | |
1484 | __func__); | |
1485 | status = download_code(serial, buffer, buffer_size); | |
1da177e4 | 1486 | |
2742fd88 | 1487 | kfree(buffer); |
1da177e4 LT |
1488 | |
1489 | if (status) { | |
2742fd88 AC |
1490 | dbg("%s - Error downloading operational code image", |
1491 | __func__); | |
1da177e4 LT |
1492 | return status; |
1493 | } | |
1494 | ||
2742fd88 | 1495 | /* Device will reboot */ |
1da177e4 LT |
1496 | serial->product_info.TiMode = TI_MODE_TRANSITIONING; |
1497 | ||
2742fd88 AC |
1498 | dbg("%s - Download successful -- Device rebooting...", |
1499 | __func__); | |
1da177e4 LT |
1500 | |
1501 | /* return an error on purpose */ | |
1502 | return -ENODEV; | |
1503 | } | |
1504 | ||
2742fd88 AC |
1505 | stayinbootmode: |
1506 | /* Eprom is invalid or blank stay in boot mode */ | |
9544e833 | 1507 | dbg("%s - STAYING IN BOOT MODE", __func__); |
1da177e4 LT |
1508 | serial->product_info.TiMode = TI_MODE_BOOT; |
1509 | ||
1510 | return 0; | |
1511 | } | |
1512 | ||
1513 | ||
2742fd88 | 1514 | static int ti_do_config(struct edgeport_port *port, int feature, int on) |
1da177e4 LT |
1515 | { |
1516 | int port_number = port->port->number - port->port->serial->minor; | |
2742fd88 AC |
1517 | on = !!on; /* 1 or 0 not bitmask */ |
1518 | return send_cmd(port->port->serial->dev, | |
1519 | feature, (__u8)(UMPM_UART1_PORT + port_number), | |
1520 | on, NULL, 0); | |
1da177e4 LT |
1521 | } |
1522 | ||
1da177e4 | 1523 | |
2742fd88 | 1524 | static int restore_mcr(struct edgeport_port *port, __u8 mcr) |
1da177e4 LT |
1525 | { |
1526 | int status = 0; | |
1527 | ||
2742fd88 | 1528 | dbg("%s - %x", __func__, mcr); |
1da177e4 | 1529 | |
2742fd88 | 1530 | status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR); |
1da177e4 LT |
1531 | if (status) |
1532 | return status; | |
2742fd88 | 1533 | status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS); |
1da177e4 LT |
1534 | if (status) |
1535 | return status; | |
2742fd88 | 1536 | return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK); |
1da177e4 LT |
1537 | } |
1538 | ||
1da177e4 | 1539 | /* Convert TI LSR to standard UART flags */ |
2742fd88 | 1540 | static __u8 map_line_status(__u8 ti_lsr) |
1da177e4 LT |
1541 | { |
1542 | __u8 lsr = 0; | |
1543 | ||
1544 | #define MAP_FLAG(flagUmp, flagUart) \ | |
1545 | if (ti_lsr & flagUmp) \ | |
1546 | lsr |= flagUart; | |
1547 | ||
1548 | MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */ | |
1549 | MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */ | |
1550 | MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */ | |
1551 | MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */ | |
2742fd88 AC |
1552 | MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* rx data available */ |
1553 | MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* tx hold reg empty */ | |
1da177e4 LT |
1554 | |
1555 | #undef MAP_FLAG | |
1556 | ||
1557 | return lsr; | |
1558 | } | |
1559 | ||
2742fd88 | 1560 | static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr) |
1da177e4 LT |
1561 | { |
1562 | struct async_icount *icount; | |
1563 | struct tty_struct *tty; | |
1564 | ||
2742fd88 | 1565 | dbg("%s - %02x", __func__, msr); |
1da177e4 | 1566 | |
2742fd88 AC |
1567 | if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | |
1568 | EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { | |
1da177e4 LT |
1569 | icount = &edge_port->icount; |
1570 | ||
1571 | /* update input line counters */ | |
1572 | if (msr & EDGEPORT_MSR_DELTA_CTS) | |
1573 | icount->cts++; | |
1574 | if (msr & EDGEPORT_MSR_DELTA_DSR) | |
1575 | icount->dsr++; | |
1576 | if (msr & EDGEPORT_MSR_DELTA_CD) | |
1577 | icount->dcd++; | |
1578 | if (msr & EDGEPORT_MSR_DELTA_RI) | |
1579 | icount->rng++; | |
2742fd88 | 1580 | wake_up_interruptible(&edge_port->delta_msr_wait); |
1da177e4 LT |
1581 | } |
1582 | ||
1583 | /* Save the new modem status */ | |
1584 | edge_port->shadow_msr = msr & 0xf0; | |
1585 | ||
4a90f09b | 1586 | tty = tty_port_tty_get(&edge_port->port->port); |
1da177e4 LT |
1587 | /* handle CTS flow control */ |
1588 | if (tty && C_CRTSCTS(tty)) { | |
1589 | if (msr & EDGEPORT_MSR_CTS) { | |
1590 | tty->hw_stopped = 0; | |
1591 | tty_wakeup(tty); | |
1592 | } else { | |
1593 | tty->hw_stopped = 1; | |
1594 | } | |
1595 | } | |
4a90f09b | 1596 | tty_kref_put(tty); |
1da177e4 LT |
1597 | |
1598 | return; | |
1599 | } | |
1600 | ||
2742fd88 AC |
1601 | static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data, |
1602 | __u8 lsr, __u8 data) | |
1da177e4 LT |
1603 | { |
1604 | struct async_icount *icount; | |
2742fd88 AC |
1605 | __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR | |
1606 | LSR_FRM_ERR | LSR_BREAK)); | |
4a90f09b | 1607 | struct tty_struct *tty; |
1da177e4 | 1608 | |
2742fd88 | 1609 | dbg("%s - %02x", __func__, new_lsr); |
1da177e4 LT |
1610 | |
1611 | edge_port->shadow_lsr = lsr; | |
1612 | ||
2742fd88 | 1613 | if (new_lsr & LSR_BREAK) |
1da177e4 LT |
1614 | /* |
1615 | * Parity and Framing errors only count if they | |
1616 | * occur exclusive of a break being received. | |
1617 | */ | |
1618 | new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK); | |
1da177e4 LT |
1619 | |
1620 | /* Place LSR data byte into Rx buffer */ | |
4a90f09b AC |
1621 | if (lsr_data) { |
1622 | tty = tty_port_tty_get(&edge_port->port->port); | |
1623 | if (tty) { | |
1624 | edge_tty_recv(&edge_port->port->dev, tty, &data, 1); | |
1625 | tty_kref_put(tty); | |
1626 | } | |
1627 | } | |
1da177e4 LT |
1628 | |
1629 | /* update input line counters */ | |
1630 | icount = &edge_port->icount; | |
1631 | if (new_lsr & LSR_BREAK) | |
1632 | icount->brk++; | |
1633 | if (new_lsr & LSR_OVER_ERR) | |
1634 | icount->overrun++; | |
1635 | if (new_lsr & LSR_PAR_ERR) | |
1636 | icount->parity++; | |
1637 | if (new_lsr & LSR_FRM_ERR) | |
1638 | icount->frame++; | |
1639 | } | |
1640 | ||
1641 | ||
2742fd88 | 1642 | static void edge_interrupt_callback(struct urb *urb) |
1da177e4 | 1643 | { |
cdc97792 | 1644 | struct edgeport_serial *edge_serial = urb->context; |
1da177e4 LT |
1645 | struct usb_serial_port *port; |
1646 | struct edgeport_port *edge_port; | |
1647 | unsigned char *data = urb->transfer_buffer; | |
1648 | int length = urb->actual_length; | |
1649 | int port_number; | |
1650 | int function; | |
ee337c21 | 1651 | int retval; |
1da177e4 LT |
1652 | __u8 lsr; |
1653 | __u8 msr; | |
ee337c21 | 1654 | int status = urb->status; |
1da177e4 | 1655 | |
441b62c1 | 1656 | dbg("%s", __func__); |
1da177e4 | 1657 | |
ee337c21 | 1658 | switch (status) { |
1da177e4 LT |
1659 | case 0: |
1660 | /* success */ | |
1661 | break; | |
1662 | case -ECONNRESET: | |
1663 | case -ENOENT: | |
1664 | case -ESHUTDOWN: | |
1665 | /* this urb is terminated, clean up */ | |
ee337c21 | 1666 | dbg("%s - urb shutting down with status: %d", |
441b62c1 | 1667 | __func__, status); |
1da177e4 LT |
1668 | return; |
1669 | default: | |
ee337c21 | 1670 | dev_err(&urb->dev->dev, "%s - nonzero urb status received: " |
441b62c1 | 1671 | "%d\n", __func__, status); |
1da177e4 LT |
1672 | goto exit; |
1673 | } | |
1674 | ||
1675 | if (!length) { | |
2742fd88 | 1676 | dbg("%s - no data in urb", __func__); |
1da177e4 LT |
1677 | goto exit; |
1678 | } | |
2742fd88 AC |
1679 | |
1680 | usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, | |
1681 | __func__, length, data); | |
1682 | ||
1da177e4 | 1683 | if (length != 2) { |
2742fd88 AC |
1684 | dbg("%s - expecting packet of size 2, got %d", |
1685 | __func__, length); | |
1da177e4 LT |
1686 | goto exit; |
1687 | } | |
1688 | ||
2742fd88 AC |
1689 | port_number = TIUMP_GET_PORT_FROM_CODE(data[0]); |
1690 | function = TIUMP_GET_FUNC_FROM_CODE(data[0]); | |
1691 | dbg("%s - port_number %d, function %d, info 0x%x", | |
441b62c1 | 1692 | __func__, port_number, function, data[1]); |
1da177e4 LT |
1693 | port = edge_serial->serial->port[port_number]; |
1694 | edge_port = usb_get_serial_port_data(port); | |
1695 | if (!edge_port) { | |
2742fd88 | 1696 | dbg("%s - edge_port not found", __func__); |
1da177e4 LT |
1697 | return; |
1698 | } | |
1699 | switch (function) { | |
1700 | case TIUMP_INTERRUPT_CODE_LSR: | |
2742fd88 | 1701 | lsr = map_line_status(data[1]); |
1da177e4 | 1702 | if (lsr & UMP_UART_LSR_DATA_MASK) { |
2742fd88 AC |
1703 | /* Save the LSR event for bulk read |
1704 | completion routine */ | |
1705 | dbg("%s - LSR Event Port %u LSR Status = %02x", | |
441b62c1 | 1706 | __func__, port_number, lsr); |
1da177e4 LT |
1707 | edge_port->lsr_event = 1; |
1708 | edge_port->lsr_mask = lsr; | |
1709 | } else { | |
2742fd88 | 1710 | dbg("%s - ===== Port %d LSR Status = %02x ======", |
441b62c1 | 1711 | __func__, port_number, lsr); |
2742fd88 | 1712 | handle_new_lsr(edge_port, 0, lsr, 0); |
1da177e4 LT |
1713 | } |
1714 | break; | |
1715 | ||
2742fd88 | 1716 | case TIUMP_INTERRUPT_CODE_MSR: /* MSR */ |
1da177e4 LT |
1717 | /* Copy MSR from UMP */ |
1718 | msr = data[1]; | |
759f3634 | 1719 | dbg("%s - ===== Port %u MSR Status = %02x ======", |
441b62c1 | 1720 | __func__, port_number, msr); |
2742fd88 | 1721 | handle_new_msr(edge_port, msr); |
1da177e4 LT |
1722 | break; |
1723 | ||
1724 | default: | |
2742fd88 AC |
1725 | dev_err(&urb->dev->dev, |
1726 | "%s - Unknown Interrupt code from UMP %x\n", | |
1727 | __func__, data[1]); | |
1da177e4 | 1728 | break; |
2742fd88 | 1729 | |
1da177e4 LT |
1730 | } |
1731 | ||
1732 | exit: | |
2742fd88 | 1733 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
ee337c21 | 1734 | if (retval) |
2742fd88 AC |
1735 | dev_err(&urb->dev->dev, |
1736 | "%s - usb_submit_urb failed with result %d\n", | |
441b62c1 | 1737 | __func__, retval); |
1da177e4 LT |
1738 | } |
1739 | ||
2742fd88 | 1740 | static void edge_bulk_in_callback(struct urb *urb) |
1da177e4 | 1741 | { |
cdc97792 | 1742 | struct edgeport_port *edge_port = urb->context; |
1da177e4 LT |
1743 | unsigned char *data = urb->transfer_buffer; |
1744 | struct tty_struct *tty; | |
ee337c21 | 1745 | int retval = 0; |
1da177e4 | 1746 | int port_number; |
ee337c21 | 1747 | int status = urb->status; |
1da177e4 | 1748 | |
441b62c1 | 1749 | dbg("%s", __func__); |
1da177e4 | 1750 | |
ee337c21 | 1751 | switch (status) { |
1da177e4 LT |
1752 | case 0: |
1753 | /* success */ | |
1754 | break; | |
1755 | case -ECONNRESET: | |
1756 | case -ENOENT: | |
1757 | case -ESHUTDOWN: | |
1758 | /* this urb is terminated, clean up */ | |
ee337c21 | 1759 | dbg("%s - urb shutting down with status: %d", |
441b62c1 | 1760 | __func__, status); |
1da177e4 LT |
1761 | return; |
1762 | default: | |
2742fd88 AC |
1763 | dev_err(&urb->dev->dev, |
1764 | "%s - nonzero read bulk status received: %d\n", | |
1765 | __func__, status); | |
1da177e4 LT |
1766 | } |
1767 | ||
ee337c21 | 1768 | if (status == -EPIPE) |
1da177e4 LT |
1769 | goto exit; |
1770 | ||
ee337c21 | 1771 | if (status) { |
2742fd88 | 1772 | dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__); |
1da177e4 LT |
1773 | return; |
1774 | } | |
1775 | ||
1776 | port_number = edge_port->port->number - edge_port->port->serial->minor; | |
1777 | ||
1778 | if (edge_port->lsr_event) { | |
1779 | edge_port->lsr_event = 0; | |
2742fd88 | 1780 | dbg("%s ===== Port %u LSR Status = %02x, Data = %02x ======", |
441b62c1 | 1781 | __func__, port_number, edge_port->lsr_mask, *data); |
2742fd88 | 1782 | handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data); |
1da177e4 LT |
1783 | /* Adjust buffer length/pointer */ |
1784 | --urb->actual_length; | |
1785 | ++data; | |
1786 | } | |
1787 | ||
4a90f09b | 1788 | tty = tty_port_tty_get(&edge_port->port->port); |
1da177e4 | 1789 | if (tty && urb->actual_length) { |
2742fd88 AC |
1790 | usb_serial_debug_data(debug, &edge_port->port->dev, |
1791 | __func__, urb->actual_length, data); | |
1792 | if (edge_port->close_pending) | |
1793 | dbg("%s - close pending, dropping data on the floor", | |
1794 | __func__); | |
1795 | else | |
1796 | edge_tty_recv(&edge_port->port->dev, tty, data, | |
1797 | urb->actual_length); | |
1da177e4 LT |
1798 | edge_port->icount.rx += urb->actual_length; |
1799 | } | |
4a90f09b | 1800 | tty_kref_put(tty); |
1da177e4 LT |
1801 | |
1802 | exit: | |
1803 | /* continue read unless stopped */ | |
1804 | spin_lock(&edge_port->ep_lock); | |
1805 | if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) { | |
1806 | urb->dev = edge_port->port->serial->dev; | |
ee337c21 | 1807 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
1da177e4 LT |
1808 | } else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING) { |
1809 | edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED; | |
1810 | } | |
1811 | spin_unlock(&edge_port->ep_lock); | |
ee337c21 | 1812 | if (retval) |
2742fd88 AC |
1813 | dev_err(&urb->dev->dev, |
1814 | "%s - usb_submit_urb failed with result %d\n", | |
441b62c1 | 1815 | __func__, retval); |
1da177e4 LT |
1816 | } |
1817 | ||
2742fd88 AC |
1818 | static void edge_tty_recv(struct device *dev, struct tty_struct *tty, |
1819 | unsigned char *data, int length) | |
1da177e4 | 1820 | { |
2742fd88 | 1821 | int queued; |
1da177e4 | 1822 | |
2742fd88 AC |
1823 | queued = tty_insert_flip_string(tty, data, length); |
1824 | if (queued < length) | |
1825 | dev_err(dev, "%s - dropping data, %d bytes lost\n", | |
1826 | __func__, length - queued); | |
1da177e4 LT |
1827 | tty_flip_buffer_push(tty); |
1828 | } | |
1829 | ||
2742fd88 | 1830 | static void edge_bulk_out_callback(struct urb *urb) |
1da177e4 | 1831 | { |
cdc97792 | 1832 | struct usb_serial_port *port = urb->context; |
1da177e4 | 1833 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
ee337c21 | 1834 | int status = urb->status; |
4a90f09b | 1835 | struct tty_struct *tty; |
1da177e4 | 1836 | |
2742fd88 | 1837 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1838 | |
1839 | edge_port->ep_write_urb_in_use = 0; | |
1840 | ||
ee337c21 | 1841 | switch (status) { |
1da177e4 LT |
1842 | case 0: |
1843 | /* success */ | |
1844 | break; | |
1845 | case -ECONNRESET: | |
1846 | case -ENOENT: | |
1847 | case -ESHUTDOWN: | |
1848 | /* this urb is terminated, clean up */ | |
ee337c21 | 1849 | dbg("%s - urb shutting down with status: %d", |
441b62c1 | 1850 | __func__, status); |
1da177e4 LT |
1851 | return; |
1852 | default: | |
ee337c21 | 1853 | dev_err(&urb->dev->dev, "%s - nonzero write bulk status " |
441b62c1 | 1854 | "received: %d\n", __func__, status); |
1da177e4 LT |
1855 | } |
1856 | ||
1857 | /* send any buffered data */ | |
4a90f09b AC |
1858 | tty = tty_port_tty_get(&port->port); |
1859 | edge_send(tty); | |
1860 | tty_kref_put(tty); | |
1da177e4 LT |
1861 | } |
1862 | ||
a509a7e4 | 1863 | static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) |
1da177e4 LT |
1864 | { |
1865 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1866 | struct edgeport_serial *edge_serial; | |
1867 | struct usb_device *dev; | |
1868 | struct urb *urb; | |
1869 | int port_number; | |
1870 | int status; | |
1871 | u16 open_settings; | |
1872 | u8 transaction_timeout; | |
1873 | ||
441b62c1 | 1874 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1875 | |
1876 | if (edge_port == NULL) | |
1877 | return -ENODEV; | |
1878 | ||
1da177e4 LT |
1879 | port_number = port->number - port->serial->minor; |
1880 | switch (port_number) { | |
2742fd88 AC |
1881 | case 0: |
1882 | edge_port->uart_base = UMPMEM_BASE_UART1; | |
1883 | edge_port->dma_address = UMPD_OEDB1_ADDRESS; | |
1884 | break; | |
1885 | case 1: | |
1886 | edge_port->uart_base = UMPMEM_BASE_UART2; | |
1887 | edge_port->dma_address = UMPD_OEDB2_ADDRESS; | |
1888 | break; | |
1889 | default: | |
1890 | dev_err(&port->dev, "Unknown port number!!!\n"); | |
1891 | return -ENODEV; | |
1da177e4 LT |
1892 | } |
1893 | ||
2742fd88 AC |
1894 | dbg("%s - port_number = %d, uart_base = %04x, dma_address = %04x", |
1895 | __func__, port_number, edge_port->uart_base, | |
1896 | edge_port->dma_address); | |
1da177e4 LT |
1897 | |
1898 | dev = port->serial->dev; | |
1899 | ||
2742fd88 AC |
1900 | memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount)); |
1901 | init_waitqueue_head(&edge_port->delta_msr_wait); | |
1da177e4 LT |
1902 | |
1903 | /* turn off loopback */ | |
2742fd88 | 1904 | status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0); |
1da177e4 | 1905 | if (status) { |
2742fd88 AC |
1906 | dev_err(&port->dev, |
1907 | "%s - cannot send clear loopback command, %d\n", | |
441b62c1 | 1908 | __func__, status); |
1da177e4 LT |
1909 | return status; |
1910 | } | |
2742fd88 | 1911 | |
1da177e4 | 1912 | /* set up the port settings */ |
95da310e | 1913 | if (tty) |
4a90f09b | 1914 | edge_set_termios(tty, port, tty->termios); |
1da177e4 LT |
1915 | |
1916 | /* open up the port */ | |
1917 | ||
1918 | /* milliseconds to timeout for DMA transfer */ | |
1919 | transaction_timeout = 2; | |
1920 | ||
2742fd88 AC |
1921 | edge_port->ump_read_timeout = |
1922 | max(20, ((transaction_timeout * 3) / 2)); | |
1da177e4 | 1923 | |
2742fd88 AC |
1924 | /* milliseconds to timeout for DMA transfer */ |
1925 | open_settings = (u8)(UMP_DMA_MODE_CONTINOUS | | |
1926 | UMP_PIPE_TRANS_TIMEOUT_ENA | | |
1da177e4 LT |
1927 | (transaction_timeout << 2)); |
1928 | ||
2742fd88 | 1929 | dbg("%s - Sending UMPC_OPEN_PORT", __func__); |
1da177e4 LT |
1930 | |
1931 | /* Tell TI to open and start the port */ | |
2742fd88 AC |
1932 | status = send_cmd(dev, UMPC_OPEN_PORT, |
1933 | (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0); | |
1da177e4 | 1934 | if (status) { |
2742fd88 AC |
1935 | dev_err(&port->dev, "%s - cannot send open command, %d\n", |
1936 | __func__, status); | |
1da177e4 LT |
1937 | return status; |
1938 | } | |
1939 | ||
1940 | /* Start the DMA? */ | |
2742fd88 AC |
1941 | status = send_cmd(dev, UMPC_START_PORT, |
1942 | (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0); | |
1da177e4 | 1943 | if (status) { |
2742fd88 AC |
1944 | dev_err(&port->dev, "%s - cannot send start DMA command, %d\n", |
1945 | __func__, status); | |
1da177e4 LT |
1946 | return status; |
1947 | } | |
1948 | ||
1949 | /* Clear TX and RX buffers in UMP */ | |
2742fd88 | 1950 | status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN); |
1da177e4 | 1951 | if (status) { |
2742fd88 AC |
1952 | dev_err(&port->dev, |
1953 | "%s - cannot send clear buffers command, %d\n", | |
1954 | __func__, status); | |
1da177e4 LT |
1955 | return status; |
1956 | } | |
1957 | ||
1958 | /* Read Initial MSR */ | |
2742fd88 AC |
1959 | status = ti_vread_sync(dev, UMPC_READ_MSR, 0, |
1960 | (__u16)(UMPM_UART1_PORT + port_number), | |
1961 | &edge_port->shadow_msr, 1); | |
1da177e4 | 1962 | if (status) { |
2742fd88 AC |
1963 | dev_err(&port->dev, "%s - cannot send read MSR command, %d\n", |
1964 | __func__, status); | |
1da177e4 LT |
1965 | return status; |
1966 | } | |
1967 | ||
2742fd88 AC |
1968 | dbg("ShadowMSR 0x%X", edge_port->shadow_msr); |
1969 | ||
1da177e4 LT |
1970 | /* Set Initial MCR */ |
1971 | edge_port->shadow_mcr = MCR_RTS | MCR_DTR; | |
2742fd88 | 1972 | dbg("ShadowMCR 0x%X", edge_port->shadow_mcr); |
1da177e4 LT |
1973 | |
1974 | edge_serial = edge_port->edge_serial; | |
241ca64f | 1975 | if (mutex_lock_interruptible(&edge_serial->es_lock)) |
1da177e4 LT |
1976 | return -ERESTARTSYS; |
1977 | if (edge_serial->num_ports_open == 0) { | |
2742fd88 | 1978 | /* we are the first port to open, post the interrupt urb */ |
1da177e4 LT |
1979 | urb = edge_serial->serial->port[0]->interrupt_in_urb; |
1980 | if (!urb) { | |
2742fd88 AC |
1981 | dev_err(&port->dev, |
1982 | "%s - no interrupt urb present, exiting\n", | |
1983 | __func__); | |
1da177e4 | 1984 | status = -EINVAL; |
241ca64f | 1985 | goto release_es_lock; |
1da177e4 LT |
1986 | } |
1987 | urb->complete = edge_interrupt_callback; | |
1988 | urb->context = edge_serial; | |
1989 | urb->dev = dev; | |
2742fd88 | 1990 | status = usb_submit_urb(urb, GFP_KERNEL); |
1da177e4 | 1991 | if (status) { |
2742fd88 AC |
1992 | dev_err(&port->dev, |
1993 | "%s - usb_submit_urb failed with value %d\n", | |
1994 | __func__, status); | |
241ca64f | 1995 | goto release_es_lock; |
1da177e4 LT |
1996 | } |
1997 | } | |
1998 | ||
1999 | /* | |
2000 | * reset the data toggle on the bulk endpoints to work around bug in | |
2001 | * host controllers where things get out of sync some times | |
2002 | */ | |
2742fd88 AC |
2003 | usb_clear_halt(dev, port->write_urb->pipe); |
2004 | usb_clear_halt(dev, port->read_urb->pipe); | |
1da177e4 LT |
2005 | |
2006 | /* start up our bulk read urb */ | |
2007 | urb = port->read_urb; | |
2008 | if (!urb) { | |
2742fd88 AC |
2009 | dev_err(&port->dev, "%s - no read urb present, exiting\n", |
2010 | __func__); | |
1da177e4 LT |
2011 | status = -EINVAL; |
2012 | goto unlink_int_urb; | |
2013 | } | |
2014 | edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; | |
2015 | urb->complete = edge_bulk_in_callback; | |
2016 | urb->context = edge_port; | |
2017 | urb->dev = dev; | |
2742fd88 | 2018 | status = usb_submit_urb(urb, GFP_KERNEL); |
1da177e4 | 2019 | if (status) { |
2742fd88 AC |
2020 | dev_err(&port->dev, |
2021 | "%s - read bulk usb_submit_urb failed with value %d\n", | |
2022 | __func__, status); | |
1da177e4 LT |
2023 | goto unlink_int_urb; |
2024 | } | |
2025 | ||
2026 | ++edge_serial->num_ports_open; | |
2027 | ||
441b62c1 | 2028 | dbg("%s - exited", __func__); |
1da177e4 | 2029 | |
241ca64f | 2030 | goto release_es_lock; |
1da177e4 LT |
2031 | |
2032 | unlink_int_urb: | |
2033 | if (edge_port->edge_serial->num_ports_open == 0) | |
2034 | usb_kill_urb(port->serial->port[0]->interrupt_in_urb); | |
241ca64f MK |
2035 | release_es_lock: |
2036 | mutex_unlock(&edge_serial->es_lock); | |
1da177e4 LT |
2037 | return status; |
2038 | } | |
2039 | ||
335f8514 | 2040 | static void edge_close(struct usb_serial_port *port) |
1da177e4 LT |
2041 | { |
2042 | struct edgeport_serial *edge_serial; | |
2043 | struct edgeport_port *edge_port; | |
2044 | int port_number; | |
2045 | int status; | |
2046 | ||
441b62c1 | 2047 | dbg("%s - port %d", __func__, port->number); |
2742fd88 | 2048 | |
1da177e4 LT |
2049 | edge_serial = usb_get_serial_data(port->serial); |
2050 | edge_port = usb_get_serial_port_data(port); | |
2742fd88 | 2051 | if (edge_serial == NULL || edge_port == NULL) |
1da177e4 | 2052 | return; |
2742fd88 AC |
2053 | |
2054 | /* The bulkreadcompletion routine will check | |
1da177e4 LT |
2055 | * this flag and dump add read data */ |
2056 | edge_port->close_pending = 1; | |
2057 | ||
2058 | /* chase the port close and flush */ | |
2742fd88 | 2059 | chase_port(edge_port, (HZ * closing_wait) / 100, 1); |
1da177e4 LT |
2060 | |
2061 | usb_kill_urb(port->read_urb); | |
2062 | usb_kill_urb(port->write_urb); | |
2063 | edge_port->ep_write_urb_in_use = 0; | |
2064 | ||
2065 | /* assuming we can still talk to the device, | |
2066 | * send a close port command to it */ | |
441b62c1 | 2067 | dbg("%s - send umpc_close_port", __func__); |
1da177e4 | 2068 | port_number = port->number - port->serial->minor; |
2742fd88 | 2069 | status = send_cmd(port->serial->dev, |
1da177e4 LT |
2070 | UMPC_CLOSE_PORT, |
2071 | (__u8)(UMPM_UART1_PORT + port_number), | |
2072 | 0, | |
2073 | NULL, | |
2074 | 0); | |
241ca64f | 2075 | mutex_lock(&edge_serial->es_lock); |
1da177e4 LT |
2076 | --edge_port->edge_serial->num_ports_open; |
2077 | if (edge_port->edge_serial->num_ports_open <= 0) { | |
2078 | /* last port is now closed, let's shut down our interrupt urb */ | |
2079 | usb_kill_urb(port->serial->port[0]->interrupt_in_urb); | |
2080 | edge_port->edge_serial->num_ports_open = 0; | |
2081 | } | |
241ca64f | 2082 | mutex_unlock(&edge_serial->es_lock); |
1da177e4 LT |
2083 | edge_port->close_pending = 0; |
2084 | ||
441b62c1 | 2085 | dbg("%s - exited", __func__); |
1da177e4 LT |
2086 | } |
2087 | ||
95da310e AC |
2088 | static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, |
2089 | const unsigned char *data, int count) | |
1da177e4 LT |
2090 | { |
2091 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
2092 | unsigned long flags; | |
2093 | ||
441b62c1 | 2094 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
2095 | |
2096 | if (count == 0) { | |
441b62c1 | 2097 | dbg("%s - write request of 0 bytes", __func__); |
1da177e4 LT |
2098 | return 0; |
2099 | } | |
2100 | ||
2101 | if (edge_port == NULL) | |
2102 | return -ENODEV; | |
2103 | if (edge_port->close_pending == 1) | |
2104 | return -ENODEV; | |
2105 | ||
2106 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
2107 | count = edge_buf_put(edge_port->ep_out_buf, data, count); | |
2108 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
2109 | ||
95da310e | 2110 | edge_send(tty); |
1da177e4 LT |
2111 | |
2112 | return count; | |
2113 | } | |
2114 | ||
95da310e | 2115 | static void edge_send(struct tty_struct *tty) |
1da177e4 | 2116 | { |
95da310e | 2117 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
2118 | int count, result; |
2119 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1da177e4 LT |
2120 | unsigned long flags; |
2121 | ||
2122 | ||
441b62c1 | 2123 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
2124 | |
2125 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
2126 | ||
2127 | if (edge_port->ep_write_urb_in_use) { | |
2128 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
2129 | return; | |
2130 | } | |
2131 | ||
2132 | count = edge_buf_get(edge_port->ep_out_buf, | |
2133 | port->write_urb->transfer_buffer, | |
2134 | port->bulk_out_size); | |
2135 | ||
2136 | if (count == 0) { | |
2137 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
2138 | return; | |
2139 | } | |
2140 | ||
2141 | edge_port->ep_write_urb_in_use = 1; | |
2142 | ||
2143 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
2144 | ||
2742fd88 AC |
2145 | usb_serial_debug_data(debug, &port->dev, __func__, count, |
2146 | port->write_urb->transfer_buffer); | |
1da177e4 LT |
2147 | |
2148 | /* set up our urb */ | |
2742fd88 AC |
2149 | usb_fill_bulk_urb(port->write_urb, port->serial->dev, |
2150 | usb_sndbulkpipe(port->serial->dev, | |
1da177e4 LT |
2151 | port->bulk_out_endpointAddress), |
2152 | port->write_urb->transfer_buffer, count, | |
2153 | edge_bulk_out_callback, | |
2154 | port); | |
2155 | ||
2156 | /* send the data out the bulk port */ | |
2157 | result = usb_submit_urb(port->write_urb, GFP_ATOMIC); | |
2158 | if (result) { | |
2742fd88 AC |
2159 | dev_err(&port->dev, |
2160 | "%s - failed submitting write urb, error %d\n", | |
2161 | __func__, result); | |
1da177e4 | 2162 | edge_port->ep_write_urb_in_use = 0; |
2742fd88 AC |
2163 | /* TODO: reschedule edge_send */ |
2164 | } else | |
1da177e4 | 2165 | edge_port->icount.tx += count; |
1da177e4 LT |
2166 | |
2167 | /* wakeup any process waiting for writes to complete */ | |
2168 | /* there is now more room in the buffer for new writes */ | |
2742fd88 | 2169 | if (tty) |
1da177e4 | 2170 | tty_wakeup(tty); |
1da177e4 LT |
2171 | } |
2172 | ||
95da310e | 2173 | static int edge_write_room(struct tty_struct *tty) |
1da177e4 | 2174 | { |
95da310e | 2175 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
2176 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
2177 | int room = 0; | |
2178 | unsigned long flags; | |
2179 | ||
441b62c1 | 2180 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
2181 | |
2182 | if (edge_port == NULL) | |
2742fd88 | 2183 | return 0; |
1da177e4 | 2184 | if (edge_port->close_pending == 1) |
2742fd88 | 2185 | return 0; |
1da177e4 LT |
2186 | |
2187 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
2188 | room = edge_buf_space_avail(edge_port->ep_out_buf); | |
2189 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
2190 | ||
441b62c1 | 2191 | dbg("%s - returns %d", __func__, room); |
1da177e4 LT |
2192 | return room; |
2193 | } | |
2194 | ||
95da310e | 2195 | static int edge_chars_in_buffer(struct tty_struct *tty) |
1da177e4 | 2196 | { |
95da310e | 2197 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
2198 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
2199 | int chars = 0; | |
2200 | unsigned long flags; | |
2201 | ||
441b62c1 | 2202 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
2203 | |
2204 | if (edge_port == NULL) | |
2742fd88 | 2205 | return 0; |
1da177e4 | 2206 | if (edge_port->close_pending == 1) |
2742fd88 | 2207 | return 0; |
1da177e4 LT |
2208 | |
2209 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
2210 | chars = edge_buf_data_avail(edge_port->ep_out_buf); | |
2211 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
2212 | ||
2742fd88 | 2213 | dbg("%s - returns %d", __func__, chars); |
1da177e4 LT |
2214 | return chars; |
2215 | } | |
2216 | ||
95da310e | 2217 | static void edge_throttle(struct tty_struct *tty) |
1da177e4 | 2218 | { |
95da310e | 2219 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 2220 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1da177e4 LT |
2221 | int status; |
2222 | ||
441b62c1 | 2223 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
2224 | |
2225 | if (edge_port == NULL) | |
2226 | return; | |
2227 | ||
1da177e4 LT |
2228 | /* if we are implementing XON/XOFF, send the stop character */ |
2229 | if (I_IXOFF(tty)) { | |
2230 | unsigned char stop_char = STOP_CHAR(tty); | |
95da310e AC |
2231 | status = edge_write(tty, port, &stop_char, 1); |
2232 | if (status <= 0) { | |
2233 | dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status); | |
2234 | } | |
1da177e4 LT |
2235 | } |
2236 | ||
2237 | /* if we are implementing RTS/CTS, stop reads */ | |
2238 | /* and the Edgeport will clear the RTS line */ | |
2239 | if (C_CRTSCTS(tty)) | |
2240 | stop_read(edge_port); | |
2241 | ||
2242 | } | |
2243 | ||
95da310e | 2244 | static void edge_unthrottle(struct tty_struct *tty) |
1da177e4 | 2245 | { |
95da310e | 2246 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 2247 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1da177e4 LT |
2248 | int status; |
2249 | ||
441b62c1 | 2250 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
2251 | |
2252 | if (edge_port == NULL) | |
2253 | return; | |
2254 | ||
1da177e4 LT |
2255 | /* if we are implementing XON/XOFF, send the start character */ |
2256 | if (I_IXOFF(tty)) { | |
2257 | unsigned char start_char = START_CHAR(tty); | |
95da310e AC |
2258 | status = edge_write(tty, port, &start_char, 1); |
2259 | if (status <= 0) { | |
2260 | dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status); | |
2261 | } | |
1da177e4 | 2262 | } |
1da177e4 LT |
2263 | /* if we are implementing RTS/CTS, restart reads */ |
2264 | /* are the Edgeport will assert the RTS line */ | |
2265 | if (C_CRTSCTS(tty)) { | |
2266 | status = restart_read(edge_port); | |
2267 | if (status) | |
2742fd88 AC |
2268 | dev_err(&port->dev, |
2269 | "%s - read bulk usb_submit_urb failed: %d\n", | |
2270 | __func__, status); | |
1da177e4 LT |
2271 | } |
2272 | ||
2273 | } | |
2274 | ||
2275 | static void stop_read(struct edgeport_port *edge_port) | |
2276 | { | |
2277 | unsigned long flags; | |
2278 | ||
2279 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
2280 | ||
2281 | if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) | |
2282 | edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING; | |
2283 | edge_port->shadow_mcr &= ~MCR_RTS; | |
2284 | ||
2285 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
2286 | } | |
2287 | ||
2288 | static int restart_read(struct edgeport_port *edge_port) | |
2289 | { | |
2290 | struct urb *urb; | |
2291 | int status = 0; | |
2292 | unsigned long flags; | |
2293 | ||
2294 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
2295 | ||
2296 | if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) { | |
2297 | urb = edge_port->port->read_urb; | |
2298 | urb->complete = edge_bulk_in_callback; | |
2299 | urb->context = edge_port; | |
2300 | urb->dev = edge_port->port->serial->dev; | |
efdff608 | 2301 | status = usb_submit_urb(urb, GFP_ATOMIC); |
1da177e4 LT |
2302 | } |
2303 | edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; | |
2304 | edge_port->shadow_mcr |= MCR_RTS; | |
2305 | ||
2306 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
2307 | ||
2308 | return status; | |
2309 | } | |
2310 | ||
95da310e AC |
2311 | static void change_port_settings(struct tty_struct *tty, |
2312 | struct edgeport_port *edge_port, struct ktermios *old_termios) | |
1da177e4 LT |
2313 | { |
2314 | struct ump_uart_config *config; | |
1da177e4 LT |
2315 | int baud; |
2316 | unsigned cflag; | |
2317 | int status; | |
2742fd88 AC |
2318 | int port_number = edge_port->port->number - |
2319 | edge_port->port->serial->minor; | |
1da177e4 | 2320 | |
441b62c1 | 2321 | dbg("%s - port %d", __func__, edge_port->port->number); |
1da177e4 | 2322 | |
95da310e | 2323 | config = kmalloc (sizeof (*config), GFP_KERNEL); |
1da177e4 | 2324 | if (!config) { |
2742fd88 AC |
2325 | *tty->termios = *old_termios; |
2326 | dev_err(&edge_port->port->dev, "%s - out of memory\n", | |
2327 | __func__); | |
1da177e4 LT |
2328 | return; |
2329 | } | |
2330 | ||
2331 | cflag = tty->termios->c_cflag; | |
2332 | ||
2333 | config->wFlags = 0; | |
2334 | ||
2335 | /* These flags must be set */ | |
2336 | config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT; | |
2337 | config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR; | |
2338 | config->bUartMode = (__u8)(edge_port->bUartMode); | |
2339 | ||
2340 | switch (cflag & CSIZE) { | |
2742fd88 AC |
2341 | case CS5: |
2342 | config->bDataBits = UMP_UART_CHAR5BITS; | |
2343 | dbg("%s - data bits = 5", __func__); | |
2344 | break; | |
2345 | case CS6: | |
2346 | config->bDataBits = UMP_UART_CHAR6BITS; | |
2347 | dbg("%s - data bits = 6", __func__); | |
2348 | break; | |
2349 | case CS7: | |
2350 | config->bDataBits = UMP_UART_CHAR7BITS; | |
2351 | dbg("%s - data bits = 7", __func__); | |
2352 | break; | |
2353 | default: | |
2354 | case CS8: | |
2355 | config->bDataBits = UMP_UART_CHAR8BITS; | |
2356 | dbg("%s - data bits = 8", __func__); | |
1da177e4 LT |
2357 | break; |
2358 | } | |
2359 | ||
2360 | if (cflag & PARENB) { | |
2361 | if (cflag & PARODD) { | |
2362 | config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; | |
2363 | config->bParity = UMP_UART_ODDPARITY; | |
441b62c1 | 2364 | dbg("%s - parity = odd", __func__); |
1da177e4 LT |
2365 | } else { |
2366 | config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; | |
2367 | config->bParity = UMP_UART_EVENPARITY; | |
441b62c1 | 2368 | dbg("%s - parity = even", __func__); |
1da177e4 LT |
2369 | } |
2370 | } else { | |
2742fd88 | 2371 | config->bParity = UMP_UART_NOPARITY; |
441b62c1 | 2372 | dbg("%s - parity = none", __func__); |
1da177e4 LT |
2373 | } |
2374 | ||
2375 | if (cflag & CSTOPB) { | |
2376 | config->bStopBits = UMP_UART_STOPBIT2; | |
441b62c1 | 2377 | dbg("%s - stop bits = 2", __func__); |
1da177e4 LT |
2378 | } else { |
2379 | config->bStopBits = UMP_UART_STOPBIT1; | |
441b62c1 | 2380 | dbg("%s - stop bits = 1", __func__); |
1da177e4 LT |
2381 | } |
2382 | ||
2383 | /* figure out the flow control settings */ | |
2384 | if (cflag & CRTSCTS) { | |
2385 | config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW; | |
2386 | config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW; | |
441b62c1 | 2387 | dbg("%s - RTS/CTS is enabled", __func__); |
1da177e4 | 2388 | } else { |
441b62c1 | 2389 | dbg("%s - RTS/CTS is disabled", __func__); |
1da177e4 LT |
2390 | tty->hw_stopped = 0; |
2391 | restart_read(edge_port); | |
2392 | } | |
2393 | ||
2742fd88 AC |
2394 | /* if we are implementing XON/XOFF, set the start and stop |
2395 | character in the device */ | |
2396 | config->cXon = START_CHAR(tty); | |
2397 | config->cXoff = STOP_CHAR(tty); | |
1da177e4 | 2398 | |
2742fd88 AC |
2399 | /* if we are implementing INBOUND XON/XOFF */ |
2400 | if (I_IXOFF(tty)) { | |
2401 | config->wFlags |= UMP_MASK_UART_FLAGS_IN_X; | |
2402 | dbg("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", | |
2403 | __func__, config->cXon, config->cXoff); | |
2404 | } else | |
2405 | dbg("%s - INBOUND XON/XOFF is disabled", __func__); | |
1da177e4 | 2406 | |
2742fd88 AC |
2407 | /* if we are implementing OUTBOUND XON/XOFF */ |
2408 | if (I_IXON(tty)) { | |
2409 | config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X; | |
2410 | dbg("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", | |
2411 | __func__, config->cXon, config->cXoff); | |
2412 | } else | |
2413 | dbg("%s - OUTBOUND XON/XOFF is disabled", __func__); | |
1da177e4 | 2414 | |
d5f5bcd4 AC |
2415 | tty->termios->c_cflag &= ~CMSPAR; |
2416 | ||
1da177e4 LT |
2417 | /* Round the baud rate */ |
2418 | baud = tty_get_baud_rate(tty); | |
2419 | if (!baud) { | |
2420 | /* pick a default, any default... */ | |
2421 | baud = 9600; | |
d5f5bcd4 AC |
2422 | } else |
2423 | tty_encode_baud_rate(tty, baud, baud); | |
2424 | ||
1da177e4 LT |
2425 | edge_port->baud_rate = baud; |
2426 | config->wBaudRate = (__u16)((461550L + baud/2) / baud); | |
2427 | ||
d5f5bcd4 AC |
2428 | /* FIXME: Recompute actual baud from divisor here */ |
2429 | ||
2742fd88 AC |
2430 | dbg("%s - baud rate = %d, wBaudRate = %d", __func__, baud, |
2431 | config->wBaudRate); | |
1da177e4 | 2432 | |
2742fd88 AC |
2433 | dbg("wBaudRate: %d", (int)(461550L / config->wBaudRate)); |
2434 | dbg("wFlags: 0x%x", config->wFlags); | |
2435 | dbg("bDataBits: %d", config->bDataBits); | |
2436 | dbg("bParity: %d", config->bParity); | |
2437 | dbg("bStopBits: %d", config->bStopBits); | |
2438 | dbg("cXon: %d", config->cXon); | |
2439 | dbg("cXoff: %d", config->cXoff); | |
2440 | dbg("bUartMode: %d", config->bUartMode); | |
1da177e4 LT |
2441 | |
2442 | /* move the word values into big endian mode */ | |
2742fd88 AC |
2443 | cpu_to_be16s(&config->wFlags); |
2444 | cpu_to_be16s(&config->wBaudRate); | |
1da177e4 | 2445 | |
2742fd88 | 2446 | status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG, |
1da177e4 | 2447 | (__u8)(UMPM_UART1_PORT + port_number), |
2742fd88 AC |
2448 | 0, (__u8 *)config, sizeof(*config)); |
2449 | if (status) | |
2450 | dbg("%s - error %d when trying to write config to device", | |
441b62c1 | 2451 | __func__, status); |
2742fd88 | 2452 | kfree(config); |
1da177e4 LT |
2453 | return; |
2454 | } | |
2455 | ||
2e0ddd62 | 2456 | static void edge_set_termios(struct tty_struct *tty, |
95da310e | 2457 | struct usb_serial_port *port, struct ktermios *old_termios) |
1da177e4 LT |
2458 | { |
2459 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
95da310e AC |
2460 | unsigned int cflag; |
2461 | ||
2462 | cflag = tty->termios->c_cflag; | |
1da177e4 | 2463 | |
441b62c1 | 2464 | dbg("%s - clfag %08x iflag %08x", __func__, |
1da177e4 | 2465 | tty->termios->c_cflag, tty->termios->c_iflag); |
441b62c1 | 2466 | dbg("%s - old clfag %08x old iflag %08x", __func__, |
d5f5bcd4 | 2467 | old_termios->c_cflag, old_termios->c_iflag); |
441b62c1 | 2468 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
2469 | |
2470 | if (edge_port == NULL) | |
2471 | return; | |
1da177e4 | 2472 | /* change the port settings to the new ones specified */ |
95da310e AC |
2473 | change_port_settings(tty, edge_port, old_termios); |
2474 | return; | |
1da177e4 LT |
2475 | } |
2476 | ||
95da310e | 2477 | static int edge_tiocmset(struct tty_struct *tty, struct file *file, |
2742fd88 | 2478 | unsigned int set, unsigned int clear) |
1da177e4 | 2479 | { |
95da310e | 2480 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
2481 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
2482 | unsigned int mcr; | |
3d71fe0b | 2483 | unsigned long flags; |
1da177e4 | 2484 | |
441b62c1 | 2485 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 2486 | |
3d71fe0b | 2487 | spin_lock_irqsave(&edge_port->ep_lock, flags); |
1da177e4 LT |
2488 | mcr = edge_port->shadow_mcr; |
2489 | if (set & TIOCM_RTS) | |
2490 | mcr |= MCR_RTS; | |
2491 | if (set & TIOCM_DTR) | |
2492 | mcr |= MCR_DTR; | |
2493 | if (set & TIOCM_LOOP) | |
2494 | mcr |= MCR_LOOPBACK; | |
2495 | ||
2496 | if (clear & TIOCM_RTS) | |
2497 | mcr &= ~MCR_RTS; | |
2498 | if (clear & TIOCM_DTR) | |
2499 | mcr &= ~MCR_DTR; | |
2500 | if (clear & TIOCM_LOOP) | |
2501 | mcr &= ~MCR_LOOPBACK; | |
2502 | ||
2503 | edge_port->shadow_mcr = mcr; | |
3d71fe0b | 2504 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); |
1da177e4 | 2505 | |
2742fd88 | 2506 | restore_mcr(edge_port, mcr); |
1da177e4 LT |
2507 | return 0; |
2508 | } | |
2509 | ||
95da310e | 2510 | static int edge_tiocmget(struct tty_struct *tty, struct file *file) |
1da177e4 | 2511 | { |
95da310e | 2512 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
2513 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
2514 | unsigned int result = 0; | |
2515 | unsigned int msr; | |
2516 | unsigned int mcr; | |
3d71fe0b | 2517 | unsigned long flags; |
1da177e4 | 2518 | |
441b62c1 | 2519 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 2520 | |
3d71fe0b AC |
2521 | spin_lock_irqsave(&edge_port->ep_lock, flags); |
2522 | ||
1da177e4 LT |
2523 | msr = edge_port->shadow_msr; |
2524 | mcr = edge_port->shadow_mcr; | |
2525 | result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ | |
2526 | | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ | |
2527 | | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ | |
2528 | | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */ | |
2529 | | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ | |
2530 | | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ | |
2531 | ||
2532 | ||
441b62c1 | 2533 | dbg("%s -- %x", __func__, result); |
3d71fe0b | 2534 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); |
1da177e4 LT |
2535 | |
2536 | return result; | |
2537 | } | |
2538 | ||
2742fd88 AC |
2539 | static int get_serial_info(struct edgeport_port *edge_port, |
2540 | struct serial_struct __user *retinfo) | |
1da177e4 LT |
2541 | { |
2542 | struct serial_struct tmp; | |
2543 | ||
2544 | if (!retinfo) | |
2545 | return -EFAULT; | |
2546 | ||
2547 | memset(&tmp, 0, sizeof(tmp)); | |
2548 | ||
2549 | tmp.type = PORT_16550A; | |
2550 | tmp.line = edge_port->port->serial->minor; | |
2551 | tmp.port = edge_port->port->number; | |
2552 | tmp.irq = 0; | |
2553 | tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; | |
2554 | tmp.xmit_fifo_size = edge_port->port->bulk_out_size; | |
2555 | tmp.baud_base = 9600; | |
2556 | tmp.close_delay = 5*HZ; | |
2557 | tmp.closing_wait = closing_wait; | |
1da177e4 LT |
2558 | |
2559 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) | |
2560 | return -EFAULT; | |
2561 | return 0; | |
2562 | } | |
2563 | ||
95da310e | 2564 | static int edge_ioctl(struct tty_struct *tty, struct file *file, |
2742fd88 | 2565 | unsigned int cmd, unsigned long arg) |
1da177e4 | 2566 | { |
95da310e | 2567 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
2568 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
2569 | struct async_icount cnow; | |
2570 | struct async_icount cprev; | |
2571 | ||
441b62c1 | 2572 | dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd); |
1da177e4 LT |
2573 | |
2574 | switch (cmd) { | |
2742fd88 AC |
2575 | case TIOCGSERIAL: |
2576 | dbg("%s - (%d) TIOCGSERIAL", __func__, port->number); | |
2577 | return get_serial_info(edge_port, | |
2578 | (struct serial_struct __user *) arg); | |
2579 | case TIOCMIWAIT: | |
2580 | dbg("%s - (%d) TIOCMIWAIT", __func__, port->number); | |
2581 | cprev = edge_port->icount; | |
2582 | while (1) { | |
2583 | interruptible_sleep_on(&edge_port->delta_msr_wait); | |
2584 | /* see if a signal did it */ | |
2585 | if (signal_pending(current)) | |
2586 | return -ERESTARTSYS; | |
2587 | cnow = edge_port->icount; | |
2588 | if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && | |
2589 | cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) | |
2590 | return -EIO; /* no change => error */ | |
2591 | if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || | |
2592 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || | |
2593 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || | |
2594 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) { | |
2595 | return 0; | |
1da177e4 | 2596 | } |
2742fd88 AC |
2597 | cprev = cnow; |
2598 | } | |
2599 | /* not reached */ | |
2600 | break; | |
2601 | case TIOCGICOUNT: | |
2602 | dbg("%s - (%d) TIOCGICOUNT RX=%d, TX=%d", __func__, | |
2603 | port->number, edge_port->icount.rx, edge_port->icount.tx); | |
2604 | if (copy_to_user((void __user *)arg, &edge_port->icount, | |
2605 | sizeof(edge_port->icount))) | |
2606 | return -EFAULT; | |
2607 | return 0; | |
1da177e4 | 2608 | } |
1da177e4 LT |
2609 | return -ENOIOCTLCMD; |
2610 | } | |
2611 | ||
95da310e | 2612 | static void edge_break(struct tty_struct *tty, int break_state) |
1da177e4 | 2613 | { |
95da310e | 2614 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
2615 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
2616 | int status; | |
2742fd88 | 2617 | int bv = 0; /* Off */ |
1da177e4 | 2618 | |
95da310e | 2619 | dbg("%s - state = %d", __func__, break_state); |
1da177e4 LT |
2620 | |
2621 | /* chase the port close */ | |
2742fd88 | 2622 | chase_port(edge_port, 0, 0); |
1da177e4 | 2623 | |
95da310e | 2624 | if (break_state == -1) |
2742fd88 AC |
2625 | bv = 1; /* On */ |
2626 | status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv); | |
2627 | if (status) | |
2628 | dbg("%s - error %d sending break set/clear command.", | |
441b62c1 | 2629 | __func__, status); |
1da177e4 LT |
2630 | } |
2631 | ||
2742fd88 | 2632 | static int edge_startup(struct usb_serial *serial) |
1da177e4 LT |
2633 | { |
2634 | struct edgeport_serial *edge_serial; | |
2635 | struct edgeport_port *edge_port; | |
2636 | struct usb_device *dev; | |
2637 | int status; | |
2638 | int i; | |
2639 | ||
2640 | dev = serial->dev; | |
2641 | ||
2642 | /* create our private serial structure */ | |
80b6ca48 | 2643 | edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL); |
1da177e4 | 2644 | if (edge_serial == NULL) { |
441b62c1 | 2645 | dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__); |
1da177e4 LT |
2646 | return -ENOMEM; |
2647 | } | |
241ca64f | 2648 | mutex_init(&edge_serial->es_lock); |
1da177e4 LT |
2649 | edge_serial->serial = serial; |
2650 | usb_set_serial_data(serial, edge_serial); | |
2651 | ||
2742fd88 | 2652 | status = download_fw(edge_serial); |
1da177e4 | 2653 | if (status) { |
2742fd88 | 2654 | kfree(edge_serial); |
1da177e4 LT |
2655 | return status; |
2656 | } | |
2657 | ||
2658 | /* set up our port private structures */ | |
2659 | for (i = 0; i < serial->num_ports; ++i) { | |
80b6ca48 | 2660 | edge_port = kzalloc(sizeof(struct edgeport_port), GFP_KERNEL); |
1da177e4 | 2661 | if (edge_port == NULL) { |
2742fd88 AC |
2662 | dev_err(&serial->dev->dev, "%s - Out of memory\n", |
2663 | __func__); | |
1da177e4 LT |
2664 | goto cleanup; |
2665 | } | |
1da177e4 LT |
2666 | spin_lock_init(&edge_port->ep_lock); |
2667 | edge_port->ep_out_buf = edge_buf_alloc(EDGE_OUT_BUF_SIZE); | |
2668 | if (edge_port->ep_out_buf == NULL) { | |
2742fd88 AC |
2669 | dev_err(&serial->dev->dev, "%s - Out of memory\n", |
2670 | __func__); | |
1da177e4 LT |
2671 | kfree(edge_port); |
2672 | goto cleanup; | |
2673 | } | |
2674 | edge_port->port = serial->port[i]; | |
2675 | edge_port->edge_serial = edge_serial; | |
2676 | usb_set_serial_port_data(serial->port[i], edge_port); | |
fc4cbd75 | 2677 | edge_port->bUartMode = default_uart_mode; |
1da177e4 | 2678 | } |
2742fd88 | 2679 | |
1da177e4 LT |
2680 | return 0; |
2681 | ||
2682 | cleanup: | |
2742fd88 | 2683 | for (--i; i >= 0; --i) { |
1da177e4 LT |
2684 | edge_port = usb_get_serial_port_data(serial->port[i]); |
2685 | edge_buf_free(edge_port->ep_out_buf); | |
2686 | kfree(edge_port); | |
2687 | usb_set_serial_port_data(serial->port[i], NULL); | |
2688 | } | |
2742fd88 | 2689 | kfree(edge_serial); |
1da177e4 LT |
2690 | usb_set_serial_data(serial, NULL); |
2691 | return -ENOMEM; | |
2692 | } | |
2693 | ||
f9c99bb8 | 2694 | static void edge_disconnect(struct usb_serial *serial) |
1da177e4 LT |
2695 | { |
2696 | int i; | |
2697 | struct edgeport_port *edge_port; | |
2698 | ||
2742fd88 | 2699 | dbg("%s", __func__); |
1da177e4 | 2700 | |
0d46c007 | 2701 | for (i = 0; i < serial->num_ports; ++i) { |
1da177e4 | 2702 | edge_port = usb_get_serial_port_data(serial->port[i]); |
fc4cbd75 | 2703 | edge_remove_sysfs_attrs(edge_port->port); |
f9c99bb8 AS |
2704 | } |
2705 | } | |
2706 | ||
2707 | static void edge_release(struct usb_serial *serial) | |
2708 | { | |
2709 | int i; | |
2710 | struct edgeport_port *edge_port; | |
2711 | ||
2712 | dbg("%s", __func__); | |
2713 | ||
2714 | for (i = 0; i < serial->num_ports; ++i) { | |
2715 | edge_port = usb_get_serial_port_data(serial->port[i]); | |
0d46c007 JJ |
2716 | edge_buf_free(edge_port->ep_out_buf); |
2717 | kfree(edge_port); | |
1da177e4 | 2718 | } |
0d46c007 | 2719 | kfree(usb_get_serial_data(serial)); |
1da177e4 LT |
2720 | } |
2721 | ||
2722 | ||
fc4cbd75 MP |
2723 | /* Sysfs Attributes */ |
2724 | ||
2725 | static ssize_t show_uart_mode(struct device *dev, | |
2726 | struct device_attribute *attr, char *buf) | |
2727 | { | |
2728 | struct usb_serial_port *port = to_usb_serial_port(dev); | |
2729 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
2730 | ||
2731 | return sprintf(buf, "%d\n", edge_port->bUartMode); | |
2732 | } | |
2733 | ||
2734 | static ssize_t store_uart_mode(struct device *dev, | |
2735 | struct device_attribute *attr, const char *valbuf, size_t count) | |
2736 | { | |
2737 | struct usb_serial_port *port = to_usb_serial_port(dev); | |
2738 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
2739 | unsigned int v = simple_strtoul(valbuf, NULL, 0); | |
2740 | ||
441b62c1 | 2741 | dbg("%s: setting uart_mode = %d", __func__, v); |
fc4cbd75 MP |
2742 | |
2743 | if (v < 256) | |
2744 | edge_port->bUartMode = v; | |
2745 | else | |
441b62c1 | 2746 | dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v); |
fc4cbd75 MP |
2747 | |
2748 | return count; | |
2749 | } | |
2750 | ||
2742fd88 AC |
2751 | static DEVICE_ATTR(uart_mode, S_IWUSR | S_IRUGO, show_uart_mode, |
2752 | store_uart_mode); | |
fc4cbd75 MP |
2753 | |
2754 | static int edge_create_sysfs_attrs(struct usb_serial_port *port) | |
2755 | { | |
2756 | return device_create_file(&port->dev, &dev_attr_uart_mode); | |
2757 | } | |
2758 | ||
2759 | static int edge_remove_sysfs_attrs(struct usb_serial_port *port) | |
2760 | { | |
2761 | device_remove_file(&port->dev, &dev_attr_uart_mode); | |
2762 | return 0; | |
2763 | } | |
2764 | ||
2765 | ||
1da177e4 LT |
2766 | /* Circular Buffer */ |
2767 | ||
2768 | /* | |
2769 | * edge_buf_alloc | |
2770 | * | |
2771 | * Allocate a circular buffer and all associated memory. | |
2772 | */ | |
2773 | ||
2774 | static struct edge_buf *edge_buf_alloc(unsigned int size) | |
2775 | { | |
2776 | struct edge_buf *eb; | |
2777 | ||
2778 | ||
2779 | if (size == 0) | |
2780 | return NULL; | |
2781 | ||
5cbded58 | 2782 | eb = kmalloc(sizeof(struct edge_buf), GFP_KERNEL); |
1da177e4 LT |
2783 | if (eb == NULL) |
2784 | return NULL; | |
2785 | ||
2786 | eb->buf_buf = kmalloc(size, GFP_KERNEL); | |
2787 | if (eb->buf_buf == NULL) { | |
2788 | kfree(eb); | |
2789 | return NULL; | |
2790 | } | |
2791 | ||
2792 | eb->buf_size = size; | |
2793 | eb->buf_get = eb->buf_put = eb->buf_buf; | |
2794 | ||
2795 | return eb; | |
2796 | } | |
2797 | ||
2798 | ||
2799 | /* | |
2800 | * edge_buf_free | |
2801 | * | |
2802 | * Free the buffer and all associated memory. | |
2803 | */ | |
2804 | ||
3d48586c | 2805 | static void edge_buf_free(struct edge_buf *eb) |
1da177e4 | 2806 | { |
1bc3c9e1 JJ |
2807 | if (eb) { |
2808 | kfree(eb->buf_buf); | |
1da177e4 LT |
2809 | kfree(eb); |
2810 | } | |
2811 | } | |
2812 | ||
2813 | ||
2814 | /* | |
2815 | * edge_buf_clear | |
2816 | * | |
2817 | * Clear out all data in the circular buffer. | |
2818 | */ | |
2819 | ||
2820 | static void edge_buf_clear(struct edge_buf *eb) | |
2821 | { | |
2742fd88 AC |
2822 | if (eb != NULL) |
2823 | eb->buf_get = eb->buf_put; | |
2824 | /* equivalent to a get of all data available */ | |
1da177e4 LT |
2825 | } |
2826 | ||
2827 | ||
2828 | /* | |
2829 | * edge_buf_data_avail | |
2830 | * | |
2831 | * Return the number of bytes of data available in the circular | |
2832 | * buffer. | |
2833 | */ | |
2834 | ||
2835 | static unsigned int edge_buf_data_avail(struct edge_buf *eb) | |
2836 | { | |
2742fd88 | 2837 | if (eb == NULL) |
1da177e4 | 2838 | return 0; |
2742fd88 | 2839 | return ((eb->buf_size + eb->buf_put - eb->buf_get) % eb->buf_size); |
1da177e4 LT |
2840 | } |
2841 | ||
2842 | ||
2843 | /* | |
2844 | * edge_buf_space_avail | |
2845 | * | |
2846 | * Return the number of bytes of space available in the circular | |
2847 | * buffer. | |
2848 | */ | |
2849 | ||
2850 | static unsigned int edge_buf_space_avail(struct edge_buf *eb) | |
2851 | { | |
2742fd88 | 2852 | if (eb == NULL) |
1da177e4 | 2853 | return 0; |
2742fd88 | 2854 | return ((eb->buf_size + eb->buf_get - eb->buf_put - 1) % eb->buf_size); |
1da177e4 LT |
2855 | } |
2856 | ||
2857 | ||
2858 | /* | |
2859 | * edge_buf_put | |
2860 | * | |
2861 | * Copy data data from a user buffer and put it into the circular buffer. | |
2862 | * Restrict to the amount of space available. | |
2863 | * | |
2864 | * Return the number of bytes copied. | |
2865 | */ | |
2866 | ||
2867 | static unsigned int edge_buf_put(struct edge_buf *eb, const char *buf, | |
2868 | unsigned int count) | |
2869 | { | |
2870 | unsigned int len; | |
2871 | ||
2872 | ||
2873 | if (eb == NULL) | |
2874 | return 0; | |
2875 | ||
2876 | len = edge_buf_space_avail(eb); | |
2877 | if (count > len) | |
2878 | count = len; | |
2879 | ||
2880 | if (count == 0) | |
2881 | return 0; | |
2882 | ||
2883 | len = eb->buf_buf + eb->buf_size - eb->buf_put; | |
2884 | if (count > len) { | |
2885 | memcpy(eb->buf_put, buf, len); | |
2886 | memcpy(eb->buf_buf, buf+len, count - len); | |
2887 | eb->buf_put = eb->buf_buf + count - len; | |
2888 | } else { | |
2889 | memcpy(eb->buf_put, buf, count); | |
2890 | if (count < len) | |
2891 | eb->buf_put += count; | |
2892 | else /* count == len */ | |
2893 | eb->buf_put = eb->buf_buf; | |
2894 | } | |
2895 | ||
2896 | return count; | |
2897 | } | |
2898 | ||
2899 | ||
2900 | /* | |
2901 | * edge_buf_get | |
2902 | * | |
2903 | * Get data from the circular buffer and copy to the given buffer. | |
2904 | * Restrict to the amount of data available. | |
2905 | * | |
2906 | * Return the number of bytes copied. | |
2907 | */ | |
2908 | ||
2909 | static unsigned int edge_buf_get(struct edge_buf *eb, char *buf, | |
2910 | unsigned int count) | |
2911 | { | |
2912 | unsigned int len; | |
2913 | ||
2914 | ||
2915 | if (eb == NULL) | |
2916 | return 0; | |
2917 | ||
2918 | len = edge_buf_data_avail(eb); | |
2919 | if (count > len) | |
2920 | count = len; | |
2921 | ||
2922 | if (count == 0) | |
2923 | return 0; | |
2924 | ||
2925 | len = eb->buf_buf + eb->buf_size - eb->buf_get; | |
2926 | if (count > len) { | |
2927 | memcpy(buf, eb->buf_get, len); | |
2928 | memcpy(buf+len, eb->buf_buf, count - len); | |
2929 | eb->buf_get = eb->buf_buf + count - len; | |
2930 | } else { | |
2931 | memcpy(buf, eb->buf_get, count); | |
2932 | if (count < len) | |
2933 | eb->buf_get += count; | |
2934 | else /* count == len */ | |
2935 | eb->buf_get = eb->buf_buf; | |
2936 | } | |
2937 | ||
2938 | return count; | |
2939 | } | |
2940 | ||
2941 | ||
ea65370d | 2942 | static struct usb_serial_driver edgeport_1port_device = { |
18fcac35 | 2943 | .driver = { |
269bda1c GKH |
2944 | .owner = THIS_MODULE, |
2945 | .name = "edgeport_ti_1", | |
18fcac35 | 2946 | }, |
269bda1c | 2947 | .description = "Edgeport TI 1 port adapter", |
d9b1b787 | 2948 | .usb_driver = &io_driver, |
1da177e4 | 2949 | .id_table = edgeport_1port_id_table, |
1da177e4 LT |
2950 | .num_ports = 1, |
2951 | .open = edge_open, | |
2952 | .close = edge_close, | |
2953 | .throttle = edge_throttle, | |
2954 | .unthrottle = edge_unthrottle, | |
2955 | .attach = edge_startup, | |
f9c99bb8 AS |
2956 | .disconnect = edge_disconnect, |
2957 | .release = edge_release, | |
fc4cbd75 | 2958 | .port_probe = edge_create_sysfs_attrs, |
1da177e4 LT |
2959 | .ioctl = edge_ioctl, |
2960 | .set_termios = edge_set_termios, | |
2961 | .tiocmget = edge_tiocmget, | |
2962 | .tiocmset = edge_tiocmset, | |
2963 | .write = edge_write, | |
2964 | .write_room = edge_write_room, | |
2965 | .chars_in_buffer = edge_chars_in_buffer, | |
2966 | .break_ctl = edge_break, | |
2967 | .read_int_callback = edge_interrupt_callback, | |
2968 | .read_bulk_callback = edge_bulk_in_callback, | |
2969 | .write_bulk_callback = edge_bulk_out_callback, | |
2970 | }; | |
2971 | ||
ea65370d | 2972 | static struct usb_serial_driver edgeport_2port_device = { |
18fcac35 | 2973 | .driver = { |
269bda1c GKH |
2974 | .owner = THIS_MODULE, |
2975 | .name = "edgeport_ti_2", | |
18fcac35 | 2976 | }, |
269bda1c | 2977 | .description = "Edgeport TI 2 port adapter", |
d9b1b787 | 2978 | .usb_driver = &io_driver, |
1da177e4 | 2979 | .id_table = edgeport_2port_id_table, |
1da177e4 LT |
2980 | .num_ports = 2, |
2981 | .open = edge_open, | |
2982 | .close = edge_close, | |
2983 | .throttle = edge_throttle, | |
2984 | .unthrottle = edge_unthrottle, | |
2985 | .attach = edge_startup, | |
f9c99bb8 AS |
2986 | .disconnect = edge_disconnect, |
2987 | .release = edge_release, | |
fc4cbd75 | 2988 | .port_probe = edge_create_sysfs_attrs, |
1da177e4 LT |
2989 | .ioctl = edge_ioctl, |
2990 | .set_termios = edge_set_termios, | |
2991 | .tiocmget = edge_tiocmget, | |
2992 | .tiocmset = edge_tiocmset, | |
2993 | .write = edge_write, | |
2994 | .write_room = edge_write_room, | |
2995 | .chars_in_buffer = edge_chars_in_buffer, | |
2996 | .break_ctl = edge_break, | |
2997 | .read_int_callback = edge_interrupt_callback, | |
2998 | .read_bulk_callback = edge_bulk_in_callback, | |
2999 | .write_bulk_callback = edge_bulk_out_callback, | |
3000 | }; | |
3001 | ||
3002 | ||
3003 | static int __init edgeport_init(void) | |
3004 | { | |
3005 | int retval; | |
3006 | retval = usb_serial_register(&edgeport_1port_device); | |
3007 | if (retval) | |
3008 | goto failed_1port_device_register; | |
3009 | retval = usb_serial_register(&edgeport_2port_device); | |
3010 | if (retval) | |
3011 | goto failed_2port_device_register; | |
3012 | retval = usb_register(&io_driver); | |
2742fd88 | 3013 | if (retval) |
1da177e4 | 3014 | goto failed_usb_register; |
c197a8db GKH |
3015 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" |
3016 | DRIVER_DESC "\n"); | |
1da177e4 LT |
3017 | return 0; |
3018 | failed_usb_register: | |
3019 | usb_serial_deregister(&edgeport_2port_device); | |
3020 | failed_2port_device_register: | |
3021 | usb_serial_deregister(&edgeport_1port_device); | |
3022 | failed_1port_device_register: | |
3023 | return retval; | |
3024 | } | |
3025 | ||
2742fd88 | 3026 | static void __exit edgeport_exit(void) |
1da177e4 | 3027 | { |
2742fd88 AC |
3028 | usb_deregister(&io_driver); |
3029 | usb_serial_deregister(&edgeport_1port_device); | |
3030 | usb_serial_deregister(&edgeport_2port_device); | |
1da177e4 LT |
3031 | } |
3032 | ||
3033 | module_init(edgeport_init); | |
3034 | module_exit(edgeport_exit); | |
3035 | ||
3036 | /* Module information */ | |
3037 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
3038 | MODULE_DESCRIPTION(DRIVER_DESC); | |
3039 | MODULE_LICENSE("GPL"); | |
d12b219a | 3040 | MODULE_FIRMWARE("edgeport/down3.bin"); |
1da177e4 LT |
3041 | |
3042 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
3043 | MODULE_PARM_DESC(debug, "Debug enabled or not"); | |
3044 | ||
1da177e4 LT |
3045 | module_param(closing_wait, int, S_IRUGO | S_IWUSR); |
3046 | MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs"); | |
3047 | ||
3048 | module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR); | |
2742fd88 AC |
3049 | MODULE_PARM_DESC(ignore_cpu_rev, |
3050 | "Ignore the cpu revision when connecting to a device"); | |
1da177e4 | 3051 | |
fc4cbd75 MP |
3052 | module_param(default_uart_mode, int, S_IRUGO | S_IWUSR); |
3053 | MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ..."); |