Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Edgeport USB Serial Converter driver | |
3 | * | |
4 | * Copyright (C) 2000-2002 Inside Out Networks, All rights reserved. | |
5 | * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * Supports the following devices: | |
13 | * EP/1 EP/2 EP/4 EP/21 EP/22 EP/221 EP/42 EP/421 WATCHPORT | |
14 | * | |
15 | * For questions or problems with this driver, contact Inside Out | |
16 | * Networks technical support, or Peter Berger <pberger@brimson.com>, | |
17 | * or Al Borchers <alborchers@steinerpoint.com>. | |
18 | * | |
19 | * Version history: | |
20 | * | |
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 | ||
79 | #define EDGE_LOW_LATENCY 1 | |
80 | #define EDGE_CLOSING_WAIT 4000 /* in .01 sec */ | |
81 | ||
82 | #define EDGE_OUT_BUF_SIZE 1024 | |
83 | ||
84 | ||
85 | /* Product information read from the Edgeport */ | |
2742fd88 AC |
86 | struct product_info { |
87 | int TiMode; /* Current TI Mode */ | |
88 | __u8 hardware_type; /* Type of hardware */ | |
1da177e4 LT |
89 | } __attribute__((packed)); |
90 | ||
91 | /* circular buffer */ | |
92 | struct edge_buf { | |
93 | unsigned int buf_size; | |
94 | char *buf_buf; | |
95 | char *buf_get; | |
96 | char *buf_put; | |
97 | }; | |
98 | ||
99 | struct edgeport_port { | |
100 | __u16 uart_base; | |
101 | __u16 dma_address; | |
102 | __u8 shadow_msr; | |
103 | __u8 shadow_mcr; | |
104 | __u8 shadow_lsr; | |
105 | __u8 lsr_mask; | |
106 | __u32 ump_read_timeout; /* Number of miliseconds the UMP will | |
107 | wait without data before completing | |
108 | a read short */ | |
109 | int baud_rate; | |
110 | int close_pending; | |
111 | int lsr_event; | |
112 | struct edgeport_uart_buf_desc tx; | |
113 | struct async_icount icount; | |
114 | wait_queue_head_t delta_msr_wait; /* for handling sleeping while | |
115 | waiting for msr change to | |
116 | happen */ | |
117 | struct edgeport_serial *edge_serial; | |
118 | struct usb_serial_port *port; | |
2742fd88 | 119 | __u8 bUartMode; /* Port type, 0: RS232, etc. */ |
1da177e4 LT |
120 | spinlock_t ep_lock; |
121 | int ep_read_urb_state; | |
122 | int ep_write_urb_in_use; | |
123 | struct edge_buf *ep_out_buf; | |
124 | }; | |
125 | ||
126 | struct edgeport_serial { | |
127 | struct product_info product_info; | |
2742fd88 AC |
128 | u8 TI_I2C_Type; /* Type of I2C in UMP */ |
129 | u8 TiReadI2C; /* Set to TRUE if we have read the | |
130 | I2c in Boot Mode */ | |
241ca64f | 131 | struct mutex es_lock; |
1da177e4 LT |
132 | int num_ports_open; |
133 | struct usb_serial *serial; | |
134 | }; | |
135 | ||
136 | ||
137 | /* Devices that this driver supports */ | |
138 | static struct usb_device_id edgeport_1port_id_table [] = { | |
139 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) }, | |
140 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) }, | |
141 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) }, | |
142 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) }, | |
143 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) }, | |
144 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) }, | |
145 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) }, | |
146 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) }, | |
147 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) }, | |
148 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) }, | |
149 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) }, | |
150 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) }, | |
151 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) }, | |
152 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) }, | |
153 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) }, | |
154 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) }, | |
155 | { } | |
156 | }; | |
157 | ||
158 | static struct usb_device_id edgeport_2port_id_table [] = { | |
159 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) }, | |
160 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) }, | |
161 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) }, | |
162 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) }, | |
163 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) }, | |
164 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) }, | |
165 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) }, | |
166 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) }, | |
167 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) }, | |
168 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) }, | |
169 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) }, | |
170 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) }, | |
fc4cbd75 | 171 | /* The 4, 8 and 16 port devices show up as multiple 2 port devices */ |
1da177e4 | 172 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) }, |
fc4cbd75 MP |
173 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) }, |
174 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) }, | |
175 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) }, | |
176 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) }, | |
1da177e4 LT |
177 | { } |
178 | }; | |
179 | ||
180 | /* Devices that this driver supports */ | |
181 | static struct usb_device_id id_table_combined [] = { | |
182 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) }, | |
183 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) }, | |
184 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) }, | |
185 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) }, | |
186 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) }, | |
187 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) }, | |
188 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) }, | |
189 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) }, | |
190 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) }, | |
191 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) }, | |
192 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) }, | |
193 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) }, | |
194 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) }, | |
195 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) }, | |
196 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) }, | |
197 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) }, | |
198 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) }, | |
199 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) }, | |
200 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) }, | |
201 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) }, | |
202 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) }, | |
203 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) }, | |
204 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) }, | |
205 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) }, | |
206 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) }, | |
207 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) }, | |
208 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) }, | |
209 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) }, | |
210 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) }, | |
fc4cbd75 MP |
211 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) }, |
212 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) }, | |
213 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) }, | |
214 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) }, | |
1da177e4 LT |
215 | { } |
216 | }; | |
217 | ||
2742fd88 | 218 | MODULE_DEVICE_TABLE(usb, id_table_combined); |
1da177e4 LT |
219 | |
220 | static struct usb_driver io_driver = { | |
1da177e4 LT |
221 | .name = "io_ti", |
222 | .probe = usb_serial_probe, | |
223 | .disconnect = usb_serial_disconnect, | |
224 | .id_table = id_table_combined, | |
ba9dc657 | 225 | .no_dynamic_id = 1, |
1da177e4 LT |
226 | }; |
227 | ||
228 | ||
d12b219a JS |
229 | static unsigned char OperationalMajorVersion; |
230 | static unsigned char OperationalMinorVersion; | |
231 | static unsigned short OperationalBuildNumber; | |
1da177e4 LT |
232 | |
233 | static int debug; | |
234 | ||
1da177e4 LT |
235 | static int low_latency = EDGE_LOW_LATENCY; |
236 | static int closing_wait = EDGE_CLOSING_WAIT; | |
2742fd88 AC |
237 | static int ignore_cpu_rev; |
238 | static int default_uart_mode; /* RS232 */ | |
1da177e4 | 239 | |
2742fd88 AC |
240 | static void edge_tty_recv(struct device *dev, struct tty_struct *tty, |
241 | unsigned char *data, int length); | |
1da177e4 LT |
242 | |
243 | static void stop_read(struct edgeport_port *edge_port); | |
244 | static int restart_read(struct edgeport_port *edge_port); | |
245 | ||
95da310e AC |
246 | static void edge_set_termios(struct tty_struct *tty, |
247 | struct usb_serial_port *port, struct ktermios *old_termios); | |
248 | static void edge_send(struct tty_struct *tty); | |
1da177e4 | 249 | |
fc4cbd75 MP |
250 | /* sysfs attributes */ |
251 | static int edge_create_sysfs_attrs(struct usb_serial_port *port); | |
252 | static int edge_remove_sysfs_attrs(struct usb_serial_port *port); | |
253 | ||
1da177e4 LT |
254 | /* circular buffer */ |
255 | static struct edge_buf *edge_buf_alloc(unsigned int size); | |
256 | static void edge_buf_free(struct edge_buf *eb); | |
257 | static void edge_buf_clear(struct edge_buf *eb); | |
258 | static unsigned int edge_buf_data_avail(struct edge_buf *eb); | |
259 | static unsigned int edge_buf_space_avail(struct edge_buf *eb); | |
260 | static unsigned int edge_buf_put(struct edge_buf *eb, const char *buf, | |
261 | unsigned int count); | |
262 | static unsigned int edge_buf_get(struct edge_buf *eb, char *buf, | |
263 | unsigned int count); | |
264 | ||
265 | ||
2742fd88 AC |
266 | static int ti_vread_sync(struct usb_device *dev, __u8 request, |
267 | __u16 value, __u16 index, u8 *data, int size) | |
1da177e4 LT |
268 | { |
269 | int status; | |
270 | ||
2742fd88 AC |
271 | status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request, |
272 | (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN), | |
273 | value, index, data, size, 1000); | |
1da177e4 LT |
274 | if (status < 0) |
275 | return status; | |
276 | if (status != size) { | |
2742fd88 AC |
277 | dbg("%s - wanted to write %d, but only wrote %d", |
278 | __func__, size, status); | |
1da177e4 LT |
279 | return -ECOMM; |
280 | } | |
281 | return 0; | |
282 | } | |
283 | ||
2742fd88 AC |
284 | static int ti_vsend_sync(struct usb_device *dev, __u8 request, |
285 | __u16 value, __u16 index, u8 *data, int size) | |
1da177e4 LT |
286 | { |
287 | int status; | |
288 | ||
2742fd88 AC |
289 | status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request, |
290 | (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT), | |
291 | value, index, data, size, 1000); | |
1da177e4 LT |
292 | if (status < 0) |
293 | return status; | |
294 | if (status != size) { | |
2742fd88 | 295 | dbg("%s - wanted to write %d, but only wrote %d", |
441b62c1 | 296 | __func__, size, status); |
1da177e4 LT |
297 | return -ECOMM; |
298 | } | |
299 | return 0; | |
300 | } | |
301 | ||
2742fd88 | 302 | static int send_cmd(struct usb_device *dev, __u8 command, |
1da177e4 LT |
303 | __u8 moduleid, __u16 value, u8 *data, |
304 | int size) | |
305 | { | |
2742fd88 | 306 | return ti_vsend_sync(dev, command, value, moduleid, data, size); |
1da177e4 LT |
307 | } |
308 | ||
309 | /* clear tx/rx buffers and fifo in TI UMP */ | |
2742fd88 | 310 | static int purge_port(struct usb_serial_port *port, __u16 mask) |
1da177e4 LT |
311 | { |
312 | int port_number = port->number - port->serial->minor; | |
313 | ||
2742fd88 | 314 | dbg("%s - port %d, mask %x", __func__, port_number, mask); |
1da177e4 | 315 | |
2742fd88 | 316 | return send_cmd(port->serial->dev, |
1da177e4 LT |
317 | UMPC_PURGE_PORT, |
318 | (__u8)(UMPM_UART1_PORT + port_number), | |
319 | mask, | |
320 | NULL, | |
321 | 0); | |
322 | } | |
323 | ||
324 | /** | |
2742fd88 | 325 | * read_download_mem - Read edgeport memory from TI chip |
1da177e4 LT |
326 | * @dev: usb device pointer |
327 | * @start_address: Device CPU address at which to read | |
328 | * @length: Length of above data | |
329 | * @address_type: Can read both XDATA and I2C | |
330 | * @buffer: pointer to input data buffer | |
331 | */ | |
2742fd88 | 332 | static int read_download_mem(struct usb_device *dev, int start_address, |
1da177e4 LT |
333 | int length, __u8 address_type, __u8 *buffer) |
334 | { | |
335 | int status = 0; | |
336 | __u8 read_length; | |
337 | __be16 be_start_address; | |
2742fd88 AC |
338 | |
339 | dbg("%s - @ %x for %d", __func__, start_address, length); | |
1da177e4 LT |
340 | |
341 | /* Read in blocks of 64 bytes | |
342 | * (TI firmware can't handle more than 64 byte reads) | |
343 | */ | |
344 | while (length) { | |
345 | if (length > 64) | |
2742fd88 | 346 | read_length = 64; |
1da177e4 LT |
347 | else |
348 | read_length = (__u8)length; | |
349 | ||
350 | if (read_length > 1) { | |
2742fd88 | 351 | dbg("%s - @ %x for %d", __func__, |
1da177e4 LT |
352 | start_address, read_length); |
353 | } | |
2742fd88 AC |
354 | be_start_address = cpu_to_be16(start_address); |
355 | status = ti_vread_sync(dev, UMPC_MEMORY_READ, | |
356 | (__u16)address_type, | |
357 | (__force __u16)be_start_address, | |
358 | buffer, read_length); | |
1da177e4 LT |
359 | |
360 | if (status) { | |
2742fd88 | 361 | dbg("%s - ERROR %x", __func__, status); |
1da177e4 LT |
362 | return status; |
363 | } | |
364 | ||
2742fd88 | 365 | if (read_length > 1) |
441b62c1 | 366 | usb_serial_debug_data(debug, &dev->dev, __func__, |
1da177e4 | 367 | read_length, buffer); |
1da177e4 LT |
368 | |
369 | /* Update pointers/length */ | |
370 | start_address += read_length; | |
371 | buffer += read_length; | |
372 | length -= read_length; | |
373 | } | |
2742fd88 | 374 | |
1da177e4 LT |
375 | return status; |
376 | } | |
377 | ||
2742fd88 AC |
378 | static int read_ram(struct usb_device *dev, int start_address, |
379 | int length, __u8 *buffer) | |
1da177e4 | 380 | { |
2742fd88 AC |
381 | return read_download_mem(dev, start_address, length, |
382 | DTK_ADDR_SPACE_XDATA, buffer); | |
1da177e4 LT |
383 | } |
384 | ||
385 | /* Read edgeport memory to a given block */ | |
2742fd88 AC |
386 | static int read_boot_mem(struct edgeport_serial *serial, |
387 | int start_address, int length, __u8 *buffer) | |
1da177e4 LT |
388 | { |
389 | int status = 0; | |
390 | int i; | |
391 | ||
2742fd88 AC |
392 | for (i = 0; i < length; i++) { |
393 | status = ti_vread_sync(serial->serial->dev, | |
394 | UMPC_MEMORY_READ, serial->TI_I2C_Type, | |
395 | (__u16)(start_address+i), &buffer[i], 0x01); | |
1da177e4 | 396 | if (status) { |
2742fd88 | 397 | dbg("%s - ERROR %x", __func__, status); |
1da177e4 LT |
398 | return status; |
399 | } | |
400 | } | |
401 | ||
2742fd88 AC |
402 | dbg("%s - start_address = %x, length = %d", |
403 | __func__, start_address, length); | |
404 | usb_serial_debug_data(debug, &serial->serial->dev->dev, | |
405 | __func__, length, buffer); | |
1da177e4 LT |
406 | |
407 | serial->TiReadI2C = 1; | |
408 | ||
409 | return status; | |
410 | } | |
411 | ||
412 | /* Write given block to TI EPROM memory */ | |
2742fd88 AC |
413 | static int write_boot_mem(struct edgeport_serial *serial, |
414 | int start_address, int length, __u8 *buffer) | |
1da177e4 LT |
415 | { |
416 | int status = 0; | |
417 | int i; | |
418 | __u8 temp; | |
419 | ||
420 | /* Must do a read before write */ | |
421 | if (!serial->TiReadI2C) { | |
2742fd88 | 422 | status = read_boot_mem(serial, 0, 1, &temp); |
1da177e4 LT |
423 | if (status) |
424 | return status; | |
425 | } | |
426 | ||
2742fd88 AC |
427 | for (i = 0; i < length; ++i) { |
428 | status = ti_vsend_sync(serial->serial->dev, | |
429 | UMPC_MEMORY_WRITE, buffer[i], | |
430 | (__u16)(i + start_address), NULL, 0); | |
1da177e4 LT |
431 | if (status) |
432 | return status; | |
433 | } | |
434 | ||
2742fd88 AC |
435 | dbg("%s - start_sddr = %x, length = %d", |
436 | __func__, start_address, length); | |
437 | usb_serial_debug_data(debug, &serial->serial->dev->dev, | |
438 | __func__, length, buffer); | |
1da177e4 LT |
439 | |
440 | return status; | |
441 | } | |
442 | ||
443 | ||
444 | /* Write edgeport I2C memory to TI chip */ | |
2742fd88 AC |
445 | static int write_i2c_mem(struct edgeport_serial *serial, |
446 | int start_address, int length, __u8 address_type, __u8 *buffer) | |
1da177e4 LT |
447 | { |
448 | int status = 0; | |
449 | int write_length; | |
450 | __be16 be_start_address; | |
451 | ||
452 | /* We can only send a maximum of 1 aligned byte page at a time */ | |
2742fd88 | 453 | |
1da177e4 | 454 | /* calulate the number of bytes left in the first page */ |
2742fd88 AC |
455 | write_length = EPROM_PAGE_SIZE - |
456 | (start_address & (EPROM_PAGE_SIZE - 1)); | |
1da177e4 LT |
457 | |
458 | if (write_length > length) | |
459 | write_length = length; | |
460 | ||
2742fd88 AC |
461 | dbg("%s - BytesInFirstPage Addr = %x, length = %d", |
462 | __func__, start_address, write_length); | |
463 | usb_serial_debug_data(debug, &serial->serial->dev->dev, | |
464 | __func__, write_length, buffer); | |
1da177e4 LT |
465 | |
466 | /* Write first page */ | |
2742fd88 AC |
467 | be_start_address = cpu_to_be16(start_address); |
468 | status = ti_vsend_sync(serial->serial->dev, | |
469 | UMPC_MEMORY_WRITE, (__u16)address_type, | |
470 | (__force __u16)be_start_address, | |
471 | buffer, write_length); | |
1da177e4 | 472 | if (status) { |
2742fd88 | 473 | dbg("%s - ERROR %d", __func__, status); |
1da177e4 LT |
474 | return status; |
475 | } | |
476 | ||
477 | length -= write_length; | |
478 | start_address += write_length; | |
479 | buffer += write_length; | |
480 | ||
2742fd88 AC |
481 | /* We should be aligned now -- can write |
482 | max page size bytes at a time */ | |
1da177e4 LT |
483 | while (length) { |
484 | if (length > EPROM_PAGE_SIZE) | |
485 | write_length = EPROM_PAGE_SIZE; | |
486 | else | |
487 | write_length = length; | |
488 | ||
2742fd88 AC |
489 | dbg("%s - Page Write Addr = %x, length = %d", |
490 | __func__, start_address, write_length); | |
491 | usb_serial_debug_data(debug, &serial->serial->dev->dev, | |
492 | __func__, write_length, buffer); | |
1da177e4 LT |
493 | |
494 | /* Write next page */ | |
2742fd88 AC |
495 | be_start_address = cpu_to_be16(start_address); |
496 | status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE, | |
497 | (__u16)address_type, | |
498 | (__force __u16)be_start_address, | |
499 | buffer, write_length); | |
1da177e4 | 500 | if (status) { |
2742fd88 AC |
501 | dev_err(&serial->serial->dev->dev, "%s - ERROR %d\n", |
502 | __func__, status); | |
1da177e4 LT |
503 | return status; |
504 | } | |
2742fd88 | 505 | |
1da177e4 LT |
506 | length -= write_length; |
507 | start_address += write_length; | |
508 | buffer += write_length; | |
509 | } | |
510 | return status; | |
511 | } | |
512 | ||
513 | /* Examine the UMP DMA registers and LSR | |
2742fd88 | 514 | * |
1da177e4 LT |
515 | * Check the MSBit of the X and Y DMA byte count registers. |
516 | * A zero in this bit indicates that the TX DMA buffers are empty | |
517 | * then check the TX Empty bit in the UART. | |
518 | */ | |
2742fd88 | 519 | static int tx_active(struct edgeport_port *port) |
1da177e4 LT |
520 | { |
521 | int status; | |
522 | struct out_endpoint_desc_block *oedb; | |
523 | __u8 *lsr; | |
524 | int bytes_left = 0; | |
525 | ||
2742fd88 | 526 | oedb = kmalloc(sizeof(*oedb), GFP_KERNEL); |
1da177e4 | 527 | if (!oedb) { |
2742fd88 | 528 | dev_err(&port->port->dev, "%s - out of memory\n", __func__); |
1da177e4 LT |
529 | return -ENOMEM; |
530 | } | |
531 | ||
2742fd88 | 532 | lsr = kmalloc(1, GFP_KERNEL); /* Sigh, that's right, just one byte, |
1da177e4 LT |
533 | as not all platforms can do DMA |
534 | from stack */ | |
535 | if (!lsr) { | |
536 | kfree(oedb); | |
537 | return -ENOMEM; | |
538 | } | |
539 | /* Read the DMA Count Registers */ | |
2742fd88 AC |
540 | status = read_ram(port->port->serial->dev, port->dma_address, |
541 | sizeof(*oedb), (void *)oedb); | |
1da177e4 LT |
542 | if (status) |
543 | goto exit_is_tx_active; | |
544 | ||
2742fd88 | 545 | dbg("%s - XByteCount 0x%X", __func__, oedb->XByteCount); |
1da177e4 LT |
546 | |
547 | /* and the LSR */ | |
2742fd88 AC |
548 | status = read_ram(port->port->serial->dev, |
549 | port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr); | |
1da177e4 LT |
550 | |
551 | if (status) | |
552 | goto exit_is_tx_active; | |
2742fd88 AC |
553 | dbg("%s - LSR = 0x%X", __func__, *lsr); |
554 | ||
1da177e4 | 555 | /* If either buffer has data or we are transmitting then return TRUE */ |
2742fd88 | 556 | if ((oedb->XByteCount & 0x80) != 0) |
1da177e4 LT |
557 | bytes_left += 64; |
558 | ||
2742fd88 | 559 | if ((*lsr & UMP_UART_LSR_TX_MASK) == 0) |
1da177e4 LT |
560 | bytes_left += 1; |
561 | ||
562 | /* We return Not Active if we get any kind of error */ | |
563 | exit_is_tx_active: | |
2742fd88 | 564 | dbg("%s - return %d", __func__, bytes_left); |
1da177e4 LT |
565 | |
566 | kfree(lsr); | |
567 | kfree(oedb); | |
568 | return bytes_left; | |
569 | } | |
570 | ||
2742fd88 AC |
571 | static void chase_port(struct edgeport_port *port, unsigned long timeout, |
572 | int flush) | |
1da177e4 LT |
573 | { |
574 | int baud_rate; | |
95da310e | 575 | struct tty_struct *tty = port->port->port.tty; |
1da177e4 LT |
576 | wait_queue_t wait; |
577 | unsigned long flags; | |
578 | ||
579 | if (!timeout) | |
2742fd88 | 580 | timeout = (HZ * EDGE_CLOSING_WAIT)/100; |
1da177e4 LT |
581 | |
582 | /* wait for data to drain from the buffer */ | |
583 | spin_lock_irqsave(&port->ep_lock, flags); | |
584 | init_waitqueue_entry(&wait, current); | |
585 | add_wait_queue(&tty->write_wait, &wait); | |
586 | for (;;) { | |
587 | set_current_state(TASK_INTERRUPTIBLE); | |
588 | if (edge_buf_data_avail(port->ep_out_buf) == 0 | |
589 | || timeout == 0 || signal_pending(current) | |
2742fd88 AC |
590 | || !usb_get_intfdata(port->port->serial->interface)) |
591 | /* disconnect */ | |
1da177e4 LT |
592 | break; |
593 | spin_unlock_irqrestore(&port->ep_lock, flags); | |
594 | timeout = schedule_timeout(timeout); | |
595 | spin_lock_irqsave(&port->ep_lock, flags); | |
596 | } | |
597 | set_current_state(TASK_RUNNING); | |
598 | remove_wait_queue(&tty->write_wait, &wait); | |
599 | if (flush) | |
600 | edge_buf_clear(port->ep_out_buf); | |
601 | spin_unlock_irqrestore(&port->ep_lock, flags); | |
602 | ||
603 | /* wait for data to drain from the device */ | |
604 | timeout += jiffies; | |
605 | while ((long)(jiffies - timeout) < 0 && !signal_pending(current) | |
2742fd88 AC |
606 | && usb_get_intfdata(port->port->serial->interface)) { |
607 | /* not disconnected */ | |
608 | if (!tx_active(port)) | |
1da177e4 LT |
609 | break; |
610 | msleep(10); | |
611 | } | |
612 | ||
613 | /* disconnected */ | |
614 | if (!usb_get_intfdata(port->port->serial->interface)) | |
615 | return; | |
616 | ||
617 | /* wait one more character time, based on baud rate */ | |
2742fd88 AC |
618 | /* (tx_active doesn't seem to wait for the last byte) */ |
619 | baud_rate = port->baud_rate; | |
620 | if (baud_rate == 0) | |
1da177e4 | 621 | baud_rate = 50; |
dfa5ec79 | 622 | msleep(max(1, DIV_ROUND_UP(10000, baud_rate))); |
1da177e4 LT |
623 | } |
624 | ||
2742fd88 | 625 | static int choose_config(struct usb_device *dev) |
1da177e4 | 626 | { |
2742fd88 AC |
627 | /* |
628 | * There may be multiple configurations on this device, in which case | |
629 | * we would need to read and parse all of them to find out which one | |
630 | * we want. However, we just support one config at this point, | |
631 | * configuration # 1, which is Config Descriptor 0. | |
632 | */ | |
1da177e4 | 633 | |
2742fd88 AC |
634 | dbg("%s - Number of Interfaces = %d", |
635 | __func__, dev->config->desc.bNumInterfaces); | |
636 | dbg("%s - MAX Power = %d", | |
637 | __func__, dev->config->desc.bMaxPower * 2); | |
1da177e4 LT |
638 | |
639 | if (dev->config->desc.bNumInterfaces != 1) { | |
2742fd88 AC |
640 | dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", |
641 | __func__); | |
1da177e4 LT |
642 | return -ENODEV; |
643 | } | |
644 | ||
645 | return 0; | |
646 | } | |
647 | ||
2742fd88 AC |
648 | static int read_rom(struct edgeport_serial *serial, |
649 | int start_address, int length, __u8 *buffer) | |
1da177e4 LT |
650 | { |
651 | int status; | |
652 | ||
653 | if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { | |
2742fd88 | 654 | status = read_download_mem(serial->serial->dev, |
1da177e4 LT |
655 | start_address, |
656 | length, | |
657 | serial->TI_I2C_Type, | |
658 | buffer); | |
659 | } else { | |
2742fd88 AC |
660 | status = read_boot_mem(serial, start_address, length, |
661 | buffer); | |
1da177e4 | 662 | } |
1da177e4 LT |
663 | return status; |
664 | } | |
665 | ||
2742fd88 AC |
666 | static int write_rom(struct edgeport_serial *serial, int start_address, |
667 | int length, __u8 *buffer) | |
1da177e4 LT |
668 | { |
669 | if (serial->product_info.TiMode == TI_MODE_BOOT) | |
2742fd88 AC |
670 | return write_boot_mem(serial, start_address, length, |
671 | buffer); | |
1da177e4 LT |
672 | |
673 | if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) | |
2742fd88 AC |
674 | return write_i2c_mem(serial, start_address, length, |
675 | serial->TI_I2C_Type, buffer); | |
1da177e4 LT |
676 | return -EINVAL; |
677 | } | |
678 | ||
679 | ||
680 | ||
681 | /* Read a descriptor header from I2C based on type */ | |
2742fd88 AC |
682 | static int get_descriptor_addr(struct edgeport_serial *serial, |
683 | int desc_type, struct ti_i2c_desc *rom_desc) | |
1da177e4 LT |
684 | { |
685 | int start_address; | |
686 | int status; | |
687 | ||
688 | /* Search for requested descriptor in I2C */ | |
689 | start_address = 2; | |
690 | do { | |
2742fd88 | 691 | status = read_rom(serial, |
1da177e4 LT |
692 | start_address, |
693 | sizeof(struct ti_i2c_desc), | |
2742fd88 | 694 | (__u8 *)rom_desc); |
1da177e4 LT |
695 | if (status) |
696 | return 0; | |
697 | ||
698 | if (rom_desc->Type == desc_type) | |
699 | return start_address; | |
700 | ||
2742fd88 AC |
701 | start_address = start_address + sizeof(struct ti_i2c_desc) |
702 | + rom_desc->Size; | |
1da177e4 LT |
703 | |
704 | } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type); | |
2742fd88 | 705 | |
1da177e4 LT |
706 | return 0; |
707 | } | |
708 | ||
709 | /* Validate descriptor checksum */ | |
2742fd88 | 710 | static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer) |
1da177e4 LT |
711 | { |
712 | __u16 i; | |
713 | __u8 cs = 0; | |
714 | ||
2742fd88 | 715 | for (i = 0; i < rom_desc->Size; i++) |
1da177e4 | 716 | cs = (__u8)(cs + buffer[i]); |
2742fd88 | 717 | |
1da177e4 | 718 | if (cs != rom_desc->CheckSum) { |
2742fd88 | 719 | dbg("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs); |
1da177e4 LT |
720 | return -EINVAL; |
721 | } | |
722 | return 0; | |
723 | } | |
724 | ||
725 | /* Make sure that the I2C image is good */ | |
2742fd88 | 726 | static int check_i2c_image(struct edgeport_serial *serial) |
1da177e4 LT |
727 | { |
728 | struct device *dev = &serial->serial->dev->dev; | |
729 | int status = 0; | |
730 | struct ti_i2c_desc *rom_desc; | |
731 | int start_address = 2; | |
732 | __u8 *buffer; | |
733 | __u16 ttype; | |
734 | ||
2742fd88 | 735 | rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); |
1da177e4 | 736 | if (!rom_desc) { |
2742fd88 | 737 | dev_err(dev, "%s - out of memory\n", __func__); |
1da177e4 LT |
738 | return -ENOMEM; |
739 | } | |
2742fd88 | 740 | buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL); |
1da177e4 | 741 | if (!buffer) { |
2742fd88 AC |
742 | dev_err(dev, "%s - out of memory when allocating buffer\n", |
743 | __func__); | |
744 | kfree(rom_desc); | |
1da177e4 LT |
745 | return -ENOMEM; |
746 | } | |
747 | ||
2742fd88 AC |
748 | /* Read the first byte (Signature0) must be 0x52 or 0x10 */ |
749 | status = read_rom(serial, 0, 1, buffer); | |
1da177e4 | 750 | if (status) |
2742fd88 | 751 | goto out; |
1da177e4 LT |
752 | |
753 | if (*buffer != UMP5152 && *buffer != UMP3410) { | |
2742fd88 | 754 | dev_err(dev, "%s - invalid buffer signature\n", __func__); |
1da177e4 | 755 | status = -ENODEV; |
2742fd88 | 756 | goto out; |
1da177e4 LT |
757 | } |
758 | ||
759 | do { | |
2742fd88 AC |
760 | /* Validate the I2C */ |
761 | status = read_rom(serial, | |
1da177e4 LT |
762 | start_address, |
763 | sizeof(struct ti_i2c_desc), | |
764 | (__u8 *)rom_desc); | |
765 | if (status) | |
766 | break; | |
767 | ||
2742fd88 AC |
768 | if ((start_address + sizeof(struct ti_i2c_desc) + |
769 | rom_desc->Size) > TI_MAX_I2C_SIZE) { | |
1da177e4 | 770 | status = -ENODEV; |
2742fd88 | 771 | dbg("%s - structure too big, erroring out.", __func__); |
1da177e4 LT |
772 | break; |
773 | } | |
774 | ||
2742fd88 | 775 | dbg("%s Type = 0x%x", __func__, rom_desc->Type); |
1da177e4 | 776 | |
2742fd88 | 777 | /* Skip type 2 record */ |
1da177e4 | 778 | ttype = rom_desc->Type & 0x0f; |
2742fd88 AC |
779 | if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC |
780 | && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) { | |
781 | /* Read the descriptor data */ | |
782 | status = read_rom(serial, start_address + | |
783 | sizeof(struct ti_i2c_desc), | |
784 | rom_desc->Size, buffer); | |
1da177e4 LT |
785 | if (status) |
786 | break; | |
787 | ||
2742fd88 | 788 | status = valid_csum(rom_desc, buffer); |
1da177e4 LT |
789 | if (status) |
790 | break; | |
791 | } | |
2742fd88 AC |
792 | start_address = start_address + sizeof(struct ti_i2c_desc) + |
793 | rom_desc->Size; | |
1da177e4 | 794 | |
2742fd88 AC |
795 | } while ((rom_desc->Type != I2C_DESC_TYPE_ION) && |
796 | (start_address < TI_MAX_I2C_SIZE)); | |
1da177e4 | 797 | |
2742fd88 AC |
798 | if ((rom_desc->Type != I2C_DESC_TYPE_ION) || |
799 | (start_address > TI_MAX_I2C_SIZE)) | |
1da177e4 LT |
800 | status = -ENODEV; |
801 | ||
2742fd88 AC |
802 | out: |
803 | kfree(buffer); | |
804 | kfree(rom_desc); | |
1da177e4 LT |
805 | return status; |
806 | } | |
807 | ||
2742fd88 | 808 | static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer) |
1da177e4 LT |
809 | { |
810 | int status; | |
811 | int start_address; | |
812 | struct ti_i2c_desc *rom_desc; | |
813 | struct edge_ti_manuf_descriptor *desc; | |
814 | ||
2742fd88 | 815 | rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); |
1da177e4 | 816 | if (!rom_desc) { |
2742fd88 AC |
817 | dev_err(&serial->serial->dev->dev, "%s - out of memory\n", |
818 | __func__); | |
1da177e4 LT |
819 | return -ENOMEM; |
820 | } | |
2742fd88 AC |
821 | start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION, |
822 | rom_desc); | |
1da177e4 LT |
823 | |
824 | if (!start_address) { | |
2742fd88 | 825 | dbg("%s - Edge Descriptor not found in I2C", __func__); |
1da177e4 LT |
826 | status = -ENODEV; |
827 | goto exit; | |
828 | } | |
829 | ||
2742fd88 AC |
830 | /* Read the descriptor data */ |
831 | status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc), | |
832 | rom_desc->Size, buffer); | |
1da177e4 LT |
833 | if (status) |
834 | goto exit; | |
2742fd88 AC |
835 | |
836 | status = valid_csum(rom_desc, buffer); | |
837 | ||
1da177e4 | 838 | desc = (struct edge_ti_manuf_descriptor *)buffer; |
2742fd88 AC |
839 | dbg("%s - IonConfig 0x%x", __func__, desc->IonConfig); |
840 | dbg("%s - Version %d", __func__, desc->Version); | |
841 | dbg("%s - Cpu/Board 0x%x", __func__, desc->CpuRev_BoardRev); | |
842 | dbg("%s - NumPorts %d", __func__, desc->NumPorts); | |
843 | dbg("%s - NumVirtualPorts %d", __func__, desc->NumVirtualPorts); | |
844 | dbg("%s - TotalPorts %d", __func__, desc->TotalPorts); | |
1da177e4 LT |
845 | |
846 | exit: | |
2742fd88 | 847 | kfree(rom_desc); |
1da177e4 LT |
848 | return status; |
849 | } | |
850 | ||
851 | /* Build firmware header used for firmware update */ | |
2742fd88 | 852 | static int build_i2c_fw_hdr(__u8 *header, struct device *dev) |
1da177e4 LT |
853 | { |
854 | __u8 *buffer; | |
855 | int buffer_size; | |
856 | int i; | |
d12b219a | 857 | int err; |
1da177e4 LT |
858 | __u8 cs = 0; |
859 | struct ti_i2c_desc *i2c_header; | |
860 | struct ti_i2c_image_header *img_header; | |
861 | struct ti_i2c_firmware_rec *firmware_rec; | |
d12b219a JS |
862 | const struct firmware *fw; |
863 | const char *fw_name = "edgeport/down3.bin"; | |
1da177e4 | 864 | |
2742fd88 AC |
865 | /* In order to update the I2C firmware we must change the type 2 record |
866 | * to type 0xF2. This will force the UMP to come up in Boot Mode. | |
867 | * Then while in boot mode, the driver will download the latest | |
868 | * firmware (padded to 15.5k) into the UMP ram. And finally when the | |
869 | * device comes back up in download mode the driver will cause the new | |
870 | * firmware to be copied from the UMP Ram to I2C and the firmware will | |
871 | * update the record type from 0xf2 to 0x02. | |
872 | */ | |
873 | ||
874 | /* Allocate a 15.5k buffer + 2 bytes for version number | |
875 | * (Firmware Record) */ | |
876 | buffer_size = (((1024 * 16) - 512 ) + | |
877 | sizeof(struct ti_i2c_firmware_rec)); | |
878 | ||
879 | buffer = kmalloc(buffer_size, GFP_KERNEL); | |
1da177e4 | 880 | if (!buffer) { |
2742fd88 | 881 | dev_err(dev, "%s - out of memory\n", __func__); |
1da177e4 LT |
882 | return -ENOMEM; |
883 | } | |
2742fd88 | 884 | |
1da177e4 | 885 | // Set entire image of 0xffs |
2742fd88 | 886 | memset(buffer, 0xff, buffer_size); |
1da177e4 | 887 | |
d12b219a JS |
888 | err = request_firmware(&fw, fw_name, dev); |
889 | if (err) { | |
890 | printk(KERN_ERR "Failed to load image \"%s\" err %d\n", | |
891 | fw_name, err); | |
892 | kfree(buffer); | |
893 | return err; | |
894 | } | |
895 | ||
896 | /* Save Download Version Number */ | |
897 | OperationalMajorVersion = fw->data[0]; | |
898 | OperationalMinorVersion = fw->data[1]; | |
899 | OperationalBuildNumber = fw->data[2] | (fw->data[3] << 8); | |
900 | ||
2742fd88 | 901 | /* Copy version number into firmware record */ |
1da177e4 LT |
902 | firmware_rec = (struct ti_i2c_firmware_rec *)buffer; |
903 | ||
d12b219a JS |
904 | firmware_rec->Ver_Major = OperationalMajorVersion; |
905 | firmware_rec->Ver_Minor = OperationalMinorVersion; | |
1da177e4 | 906 | |
2742fd88 | 907 | /* Pointer to fw_down memory image */ |
d12b219a | 908 | img_header = (struct ti_i2c_image_header *)&fw->data[4]; |
1da177e4 | 909 | |
2742fd88 | 910 | memcpy(buffer + sizeof(struct ti_i2c_firmware_rec), |
d12b219a | 911 | &fw->data[4 + sizeof(struct ti_i2c_image_header)], |
1da177e4 LT |
912 | le16_to_cpu(img_header->Length)); |
913 | ||
d12b219a JS |
914 | release_firmware(fw); |
915 | ||
1da177e4 LT |
916 | for (i=0; i < buffer_size; i++) { |
917 | cs = (__u8)(cs + buffer[i]); | |
918 | } | |
919 | ||
2742fd88 | 920 | kfree(buffer); |
1da177e4 | 921 | |
2742fd88 | 922 | /* Build new header */ |
1da177e4 LT |
923 | i2c_header = (struct ti_i2c_desc *)header; |
924 | firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data; | |
2742fd88 | 925 | |
1da177e4 LT |
926 | i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK; |
927 | i2c_header->Size = (__u16)buffer_size; | |
928 | i2c_header->CheckSum = cs; | |
d12b219a JS |
929 | firmware_rec->Ver_Major = OperationalMajorVersion; |
930 | firmware_rec->Ver_Minor = OperationalMinorVersion; | |
1da177e4 LT |
931 | |
932 | return 0; | |
933 | } | |
934 | ||
935 | /* Try to figure out what type of I2c we have */ | |
2742fd88 | 936 | static int i2c_type_bootmode(struct edgeport_serial *serial) |
1da177e4 LT |
937 | { |
938 | int status; | |
939 | __u8 data; | |
2742fd88 AC |
940 | |
941 | /* Try to read type 2 */ | |
942 | status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, | |
943 | DTK_ADDR_SPACE_I2C_TYPE_II, 0, &data, 0x01); | |
1da177e4 | 944 | if (status) |
2742fd88 | 945 | dbg("%s - read 2 status error = %d", __func__, status); |
1da177e4 | 946 | else |
2742fd88 | 947 | dbg("%s - read 2 data = 0x%x", __func__, data); |
1da177e4 | 948 | if ((!status) && (data == UMP5152 || data == UMP3410)) { |
2742fd88 | 949 | dbg("%s - ROM_TYPE_II", __func__); |
1da177e4 LT |
950 | serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; |
951 | return 0; | |
952 | } | |
953 | ||
2742fd88 AC |
954 | /* Try to read type 3 */ |
955 | status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, | |
956 | DTK_ADDR_SPACE_I2C_TYPE_III, 0, &data, 0x01); | |
1da177e4 | 957 | if (status) |
2742fd88 | 958 | dbg("%s - read 3 status error = %d", __func__, status); |
1da177e4 | 959 | else |
2742fd88 | 960 | dbg("%s - read 2 data = 0x%x", __func__, data); |
1da177e4 | 961 | if ((!status) && (data == UMP5152 || data == UMP3410)) { |
2742fd88 | 962 | dbg("%s - ROM_TYPE_III", __func__); |
1da177e4 LT |
963 | serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III; |
964 | return 0; | |
965 | } | |
966 | ||
2742fd88 | 967 | dbg("%s - Unknown", __func__); |
1da177e4 LT |
968 | serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; |
969 | return -ENODEV; | |
970 | } | |
971 | ||
2742fd88 AC |
972 | static int bulk_xfer(struct usb_serial *serial, void *buffer, |
973 | int length, int *num_sent) | |
1da177e4 LT |
974 | { |
975 | int status; | |
976 | ||
2742fd88 AC |
977 | status = usb_bulk_msg(serial->dev, |
978 | usb_sndbulkpipe(serial->dev, | |
979 | serial->port[0]->bulk_out_endpointAddress), | |
980 | buffer, length, num_sent, 1000); | |
1da177e4 LT |
981 | return status; |
982 | } | |
983 | ||
984 | /* Download given firmware image to the device (IN BOOT MODE) */ | |
2742fd88 AC |
985 | static int download_code(struct edgeport_serial *serial, __u8 *image, |
986 | int image_length) | |
1da177e4 LT |
987 | { |
988 | int status = 0; | |
989 | int pos; | |
990 | int transfer; | |
991 | int done; | |
992 | ||
2742fd88 | 993 | /* Transfer firmware image */ |
1da177e4 | 994 | for (pos = 0; pos < image_length; ) { |
2742fd88 | 995 | /* Read the next buffer from file */ |
1da177e4 LT |
996 | transfer = image_length - pos; |
997 | if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE) | |
998 | transfer = EDGE_FW_BULK_MAX_PACKET_SIZE; | |
999 | ||
2742fd88 AC |
1000 | /* Transfer data */ |
1001 | status = bulk_xfer(serial->serial, &image[pos], | |
1002 | transfer, &done); | |
1da177e4 LT |
1003 | if (status) |
1004 | break; | |
2742fd88 | 1005 | /* Advance buffer pointer */ |
1da177e4 LT |
1006 | pos += done; |
1007 | } | |
1008 | ||
1009 | return status; | |
1010 | } | |
1011 | ||
2742fd88 AC |
1012 | /* FIXME!!! */ |
1013 | static int config_boot_dev(struct usb_device *dev) | |
1da177e4 LT |
1014 | { |
1015 | return 0; | |
1016 | } | |
1017 | ||
2742fd88 AC |
1018 | static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc) |
1019 | { | |
1020 | return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev); | |
1021 | } | |
1022 | ||
1da177e4 LT |
1023 | /** |
1024 | * DownloadTIFirmware - Download run-time operating firmware to the TI5052 | |
2742fd88 | 1025 | * |
1da177e4 LT |
1026 | * This routine downloads the main operating code into the TI5052, using the |
1027 | * boot code already burned into E2PROM or ROM. | |
1028 | */ | |
2742fd88 | 1029 | static int download_fw(struct edgeport_serial *serial) |
1da177e4 LT |
1030 | { |
1031 | struct device *dev = &serial->serial->dev->dev; | |
1032 | int status = 0; | |
1033 | int start_address; | |
1034 | struct edge_ti_manuf_descriptor *ti_manuf_desc; | |
1035 | struct usb_interface_descriptor *interface; | |
1036 | int download_cur_ver; | |
1037 | int download_new_ver; | |
1038 | ||
1039 | /* This routine is entered by both the BOOT mode and the Download mode | |
1040 | * We can determine which code is running by the reading the config | |
1041 | * descriptor and if we have only one bulk pipe it is in boot mode | |
1042 | */ | |
1043 | serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP; | |
1044 | ||
1045 | /* Default to type 2 i2c */ | |
1046 | serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; | |
1047 | ||
2742fd88 | 1048 | status = choose_config(serial->serial->dev); |
1da177e4 LT |
1049 | if (status) |
1050 | return status; | |
1051 | ||
1052 | interface = &serial->serial->interface->cur_altsetting->desc; | |
1053 | if (!interface) { | |
2742fd88 | 1054 | dev_err(dev, "%s - no interface set, error!\n", __func__); |
1da177e4 LT |
1055 | return -ENODEV; |
1056 | } | |
1057 | ||
2742fd88 AC |
1058 | /* |
1059 | * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING | |
1060 | * if we have more than one endpoint we are definitely in download | |
1061 | * mode | |
1062 | */ | |
1da177e4 LT |
1063 | if (interface->bNumEndpoints > 1) |
1064 | serial->product_info.TiMode = TI_MODE_DOWNLOAD; | |
1065 | else | |
2742fd88 | 1066 | /* Otherwise we will remain in configuring mode */ |
1da177e4 LT |
1067 | serial->product_info.TiMode = TI_MODE_CONFIGURING; |
1068 | ||
1da177e4 LT |
1069 | /********************************************************************/ |
1070 | /* Download Mode */ | |
1071 | /********************************************************************/ | |
1072 | if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { | |
1073 | struct ti_i2c_desc *rom_desc; | |
1074 | ||
9544e833 | 1075 | dbg("%s - RUNNING IN DOWNLOAD MODE", __func__); |
1da177e4 | 1076 | |
2742fd88 | 1077 | status = check_i2c_image(serial); |
1da177e4 | 1078 | if (status) { |
9544e833 | 1079 | dbg("%s - DOWNLOAD MODE -- BAD I2C", __func__); |
1da177e4 LT |
1080 | return status; |
1081 | } | |
2742fd88 | 1082 | |
1da177e4 LT |
1083 | /* Validate Hardware version number |
1084 | * Read Manufacturing Descriptor from TI Based Edgeport | |
1085 | */ | |
2742fd88 | 1086 | ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL); |
1da177e4 | 1087 | if (!ti_manuf_desc) { |
2742fd88 | 1088 | dev_err(dev, "%s - out of memory.\n", __func__); |
1da177e4 LT |
1089 | return -ENOMEM; |
1090 | } | |
2742fd88 | 1091 | status = get_manuf_info(serial, (__u8 *)ti_manuf_desc); |
1da177e4 | 1092 | if (status) { |
2742fd88 | 1093 | kfree(ti_manuf_desc); |
1da177e4 LT |
1094 | return status; |
1095 | } | |
1096 | ||
2742fd88 AC |
1097 | /* Check version number of ION descriptor */ |
1098 | if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { | |
1099 | dbg("%s - Wrong CPU Rev %d (Must be 2)", | |
1100 | __func__, ti_cpu_rev(ti_manuf_desc)); | |
1101 | kfree(ti_manuf_desc); | |
1102 | return -EINVAL; | |
1103 | } | |
1da177e4 | 1104 | |
2742fd88 | 1105 | rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); |
1da177e4 | 1106 | if (!rom_desc) { |
2742fd88 AC |
1107 | dev_err(dev, "%s - out of memory.\n", __func__); |
1108 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1109 | return -ENOMEM; |
1110 | } | |
1111 | ||
2742fd88 AC |
1112 | /* Search for type 2 record (firmware record) */ |
1113 | start_address = get_descriptor_addr(serial, | |
1114 | I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc); | |
1115 | if (start_address != 0) { | |
1da177e4 LT |
1116 | struct ti_i2c_firmware_rec *firmware_version; |
1117 | __u8 record; | |
1118 | ||
2742fd88 AC |
1119 | dbg("%s - Found Type FIRMWARE (Type 2) record", |
1120 | __func__); | |
1da177e4 | 1121 | |
2742fd88 AC |
1122 | firmware_version = kmalloc(sizeof(*firmware_version), |
1123 | GFP_KERNEL); | |
1da177e4 | 1124 | if (!firmware_version) { |
2742fd88 AC |
1125 | dev_err(dev, "%s - out of memory.\n", __func__); |
1126 | kfree(rom_desc); | |
1127 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1128 | return -ENOMEM; |
1129 | } | |
1130 | ||
2742fd88 AC |
1131 | /* Validate version number |
1132 | * Read the descriptor data | |
1133 | */ | |
1134 | status = read_rom(serial, start_address + | |
1135 | sizeof(struct ti_i2c_desc), | |
1da177e4 LT |
1136 | sizeof(struct ti_i2c_firmware_rec), |
1137 | (__u8 *)firmware_version); | |
1138 | if (status) { | |
2742fd88 AC |
1139 | kfree(firmware_version); |
1140 | kfree(rom_desc); | |
1141 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1142 | return status; |
1143 | } | |
1144 | ||
2742fd88 AC |
1145 | /* Check version number of download with current |
1146 | version in I2c */ | |
1147 | download_cur_ver = (firmware_version->Ver_Major << 8) + | |
1da177e4 | 1148 | (firmware_version->Ver_Minor); |
d12b219a JS |
1149 | download_new_ver = (OperationalMajorVersion << 8) + |
1150 | (OperationalMinorVersion); | |
1da177e4 | 1151 | |
2742fd88 AC |
1152 | dbg("%s - >> FW Versions Device %d.%d Driver %d.%d", |
1153 | __func__, | |
1154 | firmware_version->Ver_Major, | |
1155 | firmware_version->Ver_Minor, | |
1156 | OperationalMajorVersion, | |
1157 | OperationalMinorVersion); | |
1da177e4 | 1158 | |
2742fd88 AC |
1159 | /* Check if we have an old version in the I2C and |
1160 | update if necessary */ | |
1da177e4 | 1161 | if (download_cur_ver != download_new_ver) { |
2742fd88 AC |
1162 | dbg("%s - Update I2C dld from %d.%d to %d.%d", |
1163 | __func__, | |
1164 | firmware_version->Ver_Major, | |
1165 | firmware_version->Ver_Minor, | |
1166 | OperationalMajorVersion, | |
1167 | OperationalMinorVersion); | |
1168 | ||
1169 | /* In order to update the I2C firmware we must | |
1170 | * change the type 2 record to type 0xF2. This | |
1171 | * will force the UMP to come up in Boot Mode. | |
1172 | * Then while in boot mode, the driver will | |
1173 | * download the latest firmware (padded to | |
1174 | * 15.5k) into the UMP ram. Finally when the | |
1175 | * device comes back up in download mode the | |
1176 | * driver will cause the new firmware to be | |
1177 | * copied from the UMP Ram to I2C and the | |
1178 | * firmware will update the record type from | |
1179 | * 0xf2 to 0x02. | |
1180 | */ | |
1da177e4 LT |
1181 | record = I2C_DESC_TYPE_FIRMWARE_BLANK; |
1182 | ||
2742fd88 AC |
1183 | /* Change the I2C Firmware record type to |
1184 | 0xf2 to trigger an update */ | |
1185 | status = write_rom(serial, start_address, | |
1186 | sizeof(record), &record); | |
1da177e4 | 1187 | if (status) { |
2742fd88 AC |
1188 | kfree(firmware_version); |
1189 | kfree(rom_desc); | |
1190 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1191 | return status; |
1192 | } | |
1193 | ||
2742fd88 AC |
1194 | /* verify the write -- must do this in order |
1195 | * for write to complete before we do the | |
1196 | * hardware reset | |
1197 | */ | |
1198 | status = read_rom(serial, | |
1da177e4 LT |
1199 | start_address, |
1200 | sizeof(record), | |
1201 | &record); | |
1da177e4 | 1202 | if (status) { |
2742fd88 AC |
1203 | kfree(firmware_version); |
1204 | kfree(rom_desc); | |
1205 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1206 | return status; |
1207 | } | |
1208 | ||
1209 | if (record != I2C_DESC_TYPE_FIRMWARE_BLANK) { | |
2742fd88 AC |
1210 | dev_err(dev, |
1211 | "%s - error resetting device\n", | |
1212 | __func__); | |
1213 | kfree(firmware_version); | |
1214 | kfree(rom_desc); | |
1215 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1216 | return -ENODEV; |
1217 | } | |
1218 | ||
2742fd88 | 1219 | dbg("%s - HARDWARE RESET", __func__); |
1da177e4 | 1220 | |
2742fd88 AC |
1221 | /* Reset UMP -- Back to BOOT MODE */ |
1222 | status = ti_vsend_sync(serial->serial->dev, | |
1223 | UMPC_HARDWARE_RESET, | |
1224 | 0, 0, NULL, 0); | |
1da177e4 | 1225 | |
2742fd88 AC |
1226 | dbg("%s - HARDWARE RESET return %d", |
1227 | __func__, status); | |
1da177e4 LT |
1228 | |
1229 | /* return an error on purpose. */ | |
2742fd88 AC |
1230 | kfree(firmware_version); |
1231 | kfree(rom_desc); | |
1232 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1233 | return -ENODEV; |
1234 | } | |
2742fd88 | 1235 | kfree(firmware_version); |
1da177e4 | 1236 | } |
2742fd88 AC |
1237 | /* Search for type 0xF2 record (firmware blank record) */ |
1238 | else if ((start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) { | |
1239 | #define HEADER_SIZE (sizeof(struct ti_i2c_desc) + \ | |
1240 | sizeof(struct ti_i2c_firmware_rec)) | |
1da177e4 LT |
1241 | __u8 *header; |
1242 | __u8 *vheader; | |
1243 | ||
2742fd88 | 1244 | header = kmalloc(HEADER_SIZE, GFP_KERNEL); |
1da177e4 | 1245 | if (!header) { |
2742fd88 AC |
1246 | dev_err(dev, "%s - out of memory.\n", __func__); |
1247 | kfree(rom_desc); | |
1248 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1249 | return -ENOMEM; |
1250 | } | |
2742fd88 AC |
1251 | |
1252 | vheader = kmalloc(HEADER_SIZE, GFP_KERNEL); | |
1da177e4 | 1253 | if (!vheader) { |
2742fd88 AC |
1254 | dev_err(dev, "%s - out of memory.\n", __func__); |
1255 | kfree(header); | |
1256 | kfree(rom_desc); | |
1257 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1258 | return -ENOMEM; |
1259 | } | |
2742fd88 AC |
1260 | |
1261 | dbg("%s - Found Type BLANK FIRMWARE (Type F2) record", | |
1262 | __func__); | |
1263 | ||
1264 | /* | |
1265 | * In order to update the I2C firmware we must change | |
1266 | * the type 2 record to type 0xF2. This will force the | |
1267 | * UMP to come up in Boot Mode. Then while in boot | |
1268 | * mode, the driver will download the latest firmware | |
1269 | * (padded to 15.5k) into the UMP ram. Finally when the | |
1270 | * device comes back up in download mode the driver | |
1271 | * will cause the new firmware to be copied from the | |
1272 | * UMP Ram to I2C and the firmware will update the | |
1273 | * record type from 0xf2 to 0x02. | |
1274 | */ | |
1275 | status = build_i2c_fw_hdr(header, dev); | |
1da177e4 | 1276 | if (status) { |
2742fd88 AC |
1277 | kfree(vheader); |
1278 | kfree(header); | |
1279 | kfree(rom_desc); | |
1280 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1281 | return status; |
1282 | } | |
1283 | ||
2742fd88 AC |
1284 | /* Update I2C with type 0xf2 record with correct |
1285 | size and checksum */ | |
1286 | status = write_rom(serial, | |
1da177e4 LT |
1287 | start_address, |
1288 | HEADER_SIZE, | |
1289 | header); | |
1290 | if (status) { | |
2742fd88 AC |
1291 | kfree(vheader); |
1292 | kfree(header); | |
1293 | kfree(rom_desc); | |
1294 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1295 | return status; |
1296 | } | |
1297 | ||
2742fd88 AC |
1298 | /* verify the write -- must do this in order for |
1299 | write to complete before we do the hardware reset */ | |
1300 | status = read_rom(serial, start_address, | |
1301 | HEADER_SIZE, vheader); | |
1da177e4 LT |
1302 | |
1303 | if (status) { | |
2742fd88 AC |
1304 | dbg("%s - can't read header back", __func__); |
1305 | kfree(vheader); | |
1306 | kfree(header); | |
1307 | kfree(rom_desc); | |
1308 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1309 | return status; |
1310 | } | |
1311 | if (memcmp(vheader, header, HEADER_SIZE)) { | |
2742fd88 AC |
1312 | dbg("%s - write download record failed", |
1313 | __func__); | |
1314 | kfree(vheader); | |
1315 | kfree(header); | |
1316 | kfree(rom_desc); | |
1317 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1318 | return status; |
1319 | } | |
1320 | ||
2742fd88 AC |
1321 | kfree(vheader); |
1322 | kfree(header); | |
1da177e4 | 1323 | |
2742fd88 | 1324 | dbg("%s - Start firmware update", __func__); |
1da177e4 | 1325 | |
2742fd88 AC |
1326 | /* Tell firmware to copy download image into I2C */ |
1327 | status = ti_vsend_sync(serial->serial->dev, | |
1328 | UMPC_COPY_DNLD_TO_I2C, 0, 0, NULL, 0); | |
1da177e4 | 1329 | |
2742fd88 | 1330 | dbg("%s - Update complete 0x%x", __func__, status); |
1da177e4 | 1331 | if (status) { |
2742fd88 AC |
1332 | dev_err(dev, |
1333 | "%s - UMPC_COPY_DNLD_TO_I2C failed\n", | |
1334 | __func__); | |
1335 | kfree(rom_desc); | |
1336 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1337 | return status; |
1338 | } | |
1339 | } | |
1340 | ||
1341 | // The device is running the download code | |
2742fd88 AC |
1342 | kfree(rom_desc); |
1343 | kfree(ti_manuf_desc); | |
1da177e4 LT |
1344 | return 0; |
1345 | } | |
1346 | ||
1347 | /********************************************************************/ | |
1348 | /* Boot Mode */ | |
1349 | /********************************************************************/ | |
9544e833 | 1350 | dbg("%s - RUNNING IN BOOT MODE", __func__); |
1da177e4 | 1351 | |
2742fd88 AC |
1352 | /* Configure the TI device so we can use the BULK pipes for download */ |
1353 | status = config_boot_dev(serial->serial->dev); | |
1da177e4 LT |
1354 | if (status) |
1355 | return status; | |
1356 | ||
2742fd88 AC |
1357 | if (le16_to_cpu(serial->serial->dev->descriptor.idVendor) |
1358 | != USB_VENDOR_ID_ION) { | |
1359 | dbg("%s - VID = 0x%x", __func__, | |
1da177e4 LT |
1360 | le16_to_cpu(serial->serial->dev->descriptor.idVendor)); |
1361 | serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; | |
2742fd88 | 1362 | goto stayinbootmode; |
1da177e4 LT |
1363 | } |
1364 | ||
2742fd88 AC |
1365 | /* We have an ION device (I2c Must be programmed) |
1366 | Determine I2C image type */ | |
1367 | if (i2c_type_bootmode(serial)) | |
1368 | goto stayinbootmode; | |
1da177e4 | 1369 | |
2742fd88 AC |
1370 | /* Check for ION Vendor ID and that the I2C is valid */ |
1371 | if (!check_i2c_image(serial)) { | |
1da177e4 LT |
1372 | struct ti_i2c_image_header *header; |
1373 | int i; | |
1374 | __u8 cs = 0; | |
1375 | __u8 *buffer; | |
1376 | int buffer_size; | |
d12b219a JS |
1377 | int err; |
1378 | const struct firmware *fw; | |
1379 | const char *fw_name = "edgeport/down3.bin"; | |
1da177e4 LT |
1380 | |
1381 | /* Validate Hardware version number | |
1382 | * Read Manufacturing Descriptor from TI Based Edgeport | |
1383 | */ | |
2742fd88 | 1384 | ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL); |
1da177e4 | 1385 | if (!ti_manuf_desc) { |
2742fd88 | 1386 | dev_err(dev, "%s - out of memory.\n", __func__); |
1da177e4 LT |
1387 | return -ENOMEM; |
1388 | } | |
2742fd88 | 1389 | status = get_manuf_info(serial, (__u8 *)ti_manuf_desc); |
1da177e4 | 1390 | if (status) { |
2742fd88 AC |
1391 | kfree(ti_manuf_desc); |
1392 | goto stayinbootmode; | |
1da177e4 LT |
1393 | } |
1394 | ||
2742fd88 AC |
1395 | /* Check for version 2 */ |
1396 | if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { | |
1397 | dbg("%s - Wrong CPU Rev %d (Must be 2)", | |
1398 | __func__, ti_cpu_rev(ti_manuf_desc)); | |
1399 | kfree(ti_manuf_desc); | |
1400 | goto stayinbootmode; | |
1da177e4 LT |
1401 | } |
1402 | ||
2742fd88 | 1403 | kfree(ti_manuf_desc); |
1da177e4 | 1404 | |
1da177e4 | 1405 | /* |
2742fd88 AC |
1406 | * In order to update the I2C firmware we must change the type |
1407 | * 2 record to type 0xF2. This will force the UMP to come up | |
1408 | * in Boot Mode. Then while in boot mode, the driver will | |
1409 | * download the latest firmware (padded to 15.5k) into the | |
1410 | * UMP ram. Finally when the device comes back up in download | |
1411 | * mode the driver will cause the new firmware to be copied | |
1412 | * from the UMP Ram to I2C and the firmware will update the | |
1413 | * record type from 0xf2 to 0x02. | |
1414 | * | |
1da177e4 LT |
1415 | * Do we really have to copy the whole firmware image, |
1416 | * or could we do this in place! | |
1417 | */ | |
1418 | ||
2742fd88 AC |
1419 | /* Allocate a 15.5k buffer + 3 byte header */ |
1420 | buffer_size = (((1024 * 16) - 512) + | |
1421 | sizeof(struct ti_i2c_image_header)); | |
1422 | buffer = kmalloc(buffer_size, GFP_KERNEL); | |
1da177e4 | 1423 | if (!buffer) { |
2742fd88 | 1424 | dev_err(dev, "%s - out of memory\n", __func__); |
1da177e4 LT |
1425 | return -ENOMEM; |
1426 | } | |
2742fd88 AC |
1427 | |
1428 | /* Initialize the buffer to 0xff (pad the buffer) */ | |
1429 | memset(buffer, 0xff, buffer_size); | |
1da177e4 | 1430 | |
d12b219a JS |
1431 | err = request_firmware(&fw, fw_name, dev); |
1432 | if (err) { | |
1433 | printk(KERN_ERR "Failed to load image \"%s\" err %d\n", | |
1434 | fw_name, err); | |
1435 | kfree(buffer); | |
1436 | return err; | |
1437 | } | |
1438 | memcpy(buffer, &fw->data[4], fw->size - 4); | |
1439 | release_firmware(fw); | |
1da177e4 | 1440 | |
2742fd88 AC |
1441 | for (i = sizeof(struct ti_i2c_image_header); |
1442 | i < buffer_size; i++) { | |
1da177e4 LT |
1443 | cs = (__u8)(cs + buffer[i]); |
1444 | } | |
2742fd88 | 1445 | |
1da177e4 | 1446 | header = (struct ti_i2c_image_header *)buffer; |
2742fd88 AC |
1447 | |
1448 | /* update length and checksum after padding */ | |
1449 | header->Length = cpu_to_le16((__u16)(buffer_size - | |
1450 | sizeof(struct ti_i2c_image_header))); | |
1da177e4 LT |
1451 | header->CheckSum = cs; |
1452 | ||
2742fd88 AC |
1453 | /* Download the operational code */ |
1454 | dbg("%s - Downloading operational code image (TI UMP)", | |
1455 | __func__); | |
1456 | status = download_code(serial, buffer, buffer_size); | |
1da177e4 | 1457 | |
2742fd88 | 1458 | kfree(buffer); |
1da177e4 LT |
1459 | |
1460 | if (status) { | |
2742fd88 AC |
1461 | dbg("%s - Error downloading operational code image", |
1462 | __func__); | |
1da177e4 LT |
1463 | return status; |
1464 | } | |
1465 | ||
2742fd88 | 1466 | /* Device will reboot */ |
1da177e4 LT |
1467 | serial->product_info.TiMode = TI_MODE_TRANSITIONING; |
1468 | ||
2742fd88 AC |
1469 | dbg("%s - Download successful -- Device rebooting...", |
1470 | __func__); | |
1da177e4 LT |
1471 | |
1472 | /* return an error on purpose */ | |
1473 | return -ENODEV; | |
1474 | } | |
1475 | ||
2742fd88 AC |
1476 | stayinbootmode: |
1477 | /* Eprom is invalid or blank stay in boot mode */ | |
9544e833 | 1478 | dbg("%s - STAYING IN BOOT MODE", __func__); |
1da177e4 LT |
1479 | serial->product_info.TiMode = TI_MODE_BOOT; |
1480 | ||
1481 | return 0; | |
1482 | } | |
1483 | ||
1484 | ||
2742fd88 | 1485 | static int ti_do_config(struct edgeport_port *port, int feature, int on) |
1da177e4 LT |
1486 | { |
1487 | int port_number = port->port->number - port->port->serial->minor; | |
2742fd88 AC |
1488 | on = !!on; /* 1 or 0 not bitmask */ |
1489 | return send_cmd(port->port->serial->dev, | |
1490 | feature, (__u8)(UMPM_UART1_PORT + port_number), | |
1491 | on, NULL, 0); | |
1da177e4 LT |
1492 | } |
1493 | ||
1da177e4 | 1494 | |
2742fd88 | 1495 | static int restore_mcr(struct edgeport_port *port, __u8 mcr) |
1da177e4 LT |
1496 | { |
1497 | int status = 0; | |
1498 | ||
2742fd88 | 1499 | dbg("%s - %x", __func__, mcr); |
1da177e4 | 1500 | |
2742fd88 | 1501 | status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR); |
1da177e4 LT |
1502 | if (status) |
1503 | return status; | |
2742fd88 | 1504 | status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS); |
1da177e4 LT |
1505 | if (status) |
1506 | return status; | |
2742fd88 | 1507 | return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK); |
1da177e4 LT |
1508 | } |
1509 | ||
1da177e4 | 1510 | /* Convert TI LSR to standard UART flags */ |
2742fd88 | 1511 | static __u8 map_line_status(__u8 ti_lsr) |
1da177e4 LT |
1512 | { |
1513 | __u8 lsr = 0; | |
1514 | ||
1515 | #define MAP_FLAG(flagUmp, flagUart) \ | |
1516 | if (ti_lsr & flagUmp) \ | |
1517 | lsr |= flagUart; | |
1518 | ||
1519 | MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */ | |
1520 | MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */ | |
1521 | MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */ | |
1522 | MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */ | |
2742fd88 AC |
1523 | MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* rx data available */ |
1524 | MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* tx hold reg empty */ | |
1da177e4 LT |
1525 | |
1526 | #undef MAP_FLAG | |
1527 | ||
1528 | return lsr; | |
1529 | } | |
1530 | ||
2742fd88 | 1531 | static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr) |
1da177e4 LT |
1532 | { |
1533 | struct async_icount *icount; | |
1534 | struct tty_struct *tty; | |
1535 | ||
2742fd88 | 1536 | dbg("%s - %02x", __func__, msr); |
1da177e4 | 1537 | |
2742fd88 AC |
1538 | if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | |
1539 | EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { | |
1da177e4 LT |
1540 | icount = &edge_port->icount; |
1541 | ||
1542 | /* update input line counters */ | |
1543 | if (msr & EDGEPORT_MSR_DELTA_CTS) | |
1544 | icount->cts++; | |
1545 | if (msr & EDGEPORT_MSR_DELTA_DSR) | |
1546 | icount->dsr++; | |
1547 | if (msr & EDGEPORT_MSR_DELTA_CD) | |
1548 | icount->dcd++; | |
1549 | if (msr & EDGEPORT_MSR_DELTA_RI) | |
1550 | icount->rng++; | |
2742fd88 | 1551 | wake_up_interruptible(&edge_port->delta_msr_wait); |
1da177e4 LT |
1552 | } |
1553 | ||
1554 | /* Save the new modem status */ | |
1555 | edge_port->shadow_msr = msr & 0xf0; | |
1556 | ||
95da310e | 1557 | tty = edge_port->port->port.tty; |
1da177e4 LT |
1558 | /* handle CTS flow control */ |
1559 | if (tty && C_CRTSCTS(tty)) { | |
1560 | if (msr & EDGEPORT_MSR_CTS) { | |
1561 | tty->hw_stopped = 0; | |
1562 | tty_wakeup(tty); | |
1563 | } else { | |
1564 | tty->hw_stopped = 1; | |
1565 | } | |
1566 | } | |
1567 | ||
1568 | return; | |
1569 | } | |
1570 | ||
2742fd88 AC |
1571 | static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data, |
1572 | __u8 lsr, __u8 data) | |
1da177e4 LT |
1573 | { |
1574 | struct async_icount *icount; | |
2742fd88 AC |
1575 | __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR | |
1576 | LSR_FRM_ERR | LSR_BREAK)); | |
1da177e4 | 1577 | |
2742fd88 | 1578 | dbg("%s - %02x", __func__, new_lsr); |
1da177e4 LT |
1579 | |
1580 | edge_port->shadow_lsr = lsr; | |
1581 | ||
2742fd88 | 1582 | if (new_lsr & LSR_BREAK) |
1da177e4 LT |
1583 | /* |
1584 | * Parity and Framing errors only count if they | |
1585 | * occur exclusive of a break being received. | |
1586 | */ | |
1587 | new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK); | |
1da177e4 LT |
1588 | |
1589 | /* Place LSR data byte into Rx buffer */ | |
95da310e AC |
1590 | if (lsr_data && edge_port->port->port.tty) |
1591 | edge_tty_recv(&edge_port->port->dev, edge_port->port->port.tty, &data, 1); | |
1da177e4 LT |
1592 | |
1593 | /* update input line counters */ | |
1594 | icount = &edge_port->icount; | |
1595 | if (new_lsr & LSR_BREAK) | |
1596 | icount->brk++; | |
1597 | if (new_lsr & LSR_OVER_ERR) | |
1598 | icount->overrun++; | |
1599 | if (new_lsr & LSR_PAR_ERR) | |
1600 | icount->parity++; | |
1601 | if (new_lsr & LSR_FRM_ERR) | |
1602 | icount->frame++; | |
1603 | } | |
1604 | ||
1605 | ||
2742fd88 | 1606 | static void edge_interrupt_callback(struct urb *urb) |
1da177e4 | 1607 | { |
cdc97792 | 1608 | struct edgeport_serial *edge_serial = urb->context; |
1da177e4 LT |
1609 | struct usb_serial_port *port; |
1610 | struct edgeport_port *edge_port; | |
1611 | unsigned char *data = urb->transfer_buffer; | |
1612 | int length = urb->actual_length; | |
1613 | int port_number; | |
1614 | int function; | |
ee337c21 | 1615 | int retval; |
1da177e4 LT |
1616 | __u8 lsr; |
1617 | __u8 msr; | |
ee337c21 | 1618 | int status = urb->status; |
1da177e4 | 1619 | |
441b62c1 | 1620 | dbg("%s", __func__); |
1da177e4 | 1621 | |
ee337c21 | 1622 | switch (status) { |
1da177e4 LT |
1623 | case 0: |
1624 | /* success */ | |
1625 | break; | |
1626 | case -ECONNRESET: | |
1627 | case -ENOENT: | |
1628 | case -ESHUTDOWN: | |
1629 | /* this urb is terminated, clean up */ | |
ee337c21 | 1630 | dbg("%s - urb shutting down with status: %d", |
441b62c1 | 1631 | __func__, status); |
1da177e4 LT |
1632 | return; |
1633 | default: | |
ee337c21 | 1634 | dev_err(&urb->dev->dev, "%s - nonzero urb status received: " |
441b62c1 | 1635 | "%d\n", __func__, status); |
1da177e4 LT |
1636 | goto exit; |
1637 | } | |
1638 | ||
1639 | if (!length) { | |
2742fd88 | 1640 | dbg("%s - no data in urb", __func__); |
1da177e4 LT |
1641 | goto exit; |
1642 | } | |
2742fd88 AC |
1643 | |
1644 | usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, | |
1645 | __func__, length, data); | |
1646 | ||
1da177e4 | 1647 | if (length != 2) { |
2742fd88 AC |
1648 | dbg("%s - expecting packet of size 2, got %d", |
1649 | __func__, length); | |
1da177e4 LT |
1650 | goto exit; |
1651 | } | |
1652 | ||
2742fd88 AC |
1653 | port_number = TIUMP_GET_PORT_FROM_CODE(data[0]); |
1654 | function = TIUMP_GET_FUNC_FROM_CODE(data[0]); | |
1655 | dbg("%s - port_number %d, function %d, info 0x%x", | |
441b62c1 | 1656 | __func__, port_number, function, data[1]); |
1da177e4 LT |
1657 | port = edge_serial->serial->port[port_number]; |
1658 | edge_port = usb_get_serial_port_data(port); | |
1659 | if (!edge_port) { | |
2742fd88 | 1660 | dbg("%s - edge_port not found", __func__); |
1da177e4 LT |
1661 | return; |
1662 | } | |
1663 | switch (function) { | |
1664 | case TIUMP_INTERRUPT_CODE_LSR: | |
2742fd88 | 1665 | lsr = map_line_status(data[1]); |
1da177e4 | 1666 | if (lsr & UMP_UART_LSR_DATA_MASK) { |
2742fd88 AC |
1667 | /* Save the LSR event for bulk read |
1668 | completion routine */ | |
1669 | dbg("%s - LSR Event Port %u LSR Status = %02x", | |
441b62c1 | 1670 | __func__, port_number, lsr); |
1da177e4 LT |
1671 | edge_port->lsr_event = 1; |
1672 | edge_port->lsr_mask = lsr; | |
1673 | } else { | |
2742fd88 | 1674 | dbg("%s - ===== Port %d LSR Status = %02x ======", |
441b62c1 | 1675 | __func__, port_number, lsr); |
2742fd88 | 1676 | handle_new_lsr(edge_port, 0, lsr, 0); |
1da177e4 LT |
1677 | } |
1678 | break; | |
1679 | ||
2742fd88 | 1680 | case TIUMP_INTERRUPT_CODE_MSR: /* MSR */ |
1da177e4 LT |
1681 | /* Copy MSR from UMP */ |
1682 | msr = data[1]; | |
2742fd88 | 1683 | dbg("%s - ===== Port %u MSR Status = %02x ======\n", |
441b62c1 | 1684 | __func__, port_number, msr); |
2742fd88 | 1685 | handle_new_msr(edge_port, msr); |
1da177e4 LT |
1686 | break; |
1687 | ||
1688 | default: | |
2742fd88 AC |
1689 | dev_err(&urb->dev->dev, |
1690 | "%s - Unknown Interrupt code from UMP %x\n", | |
1691 | __func__, data[1]); | |
1da177e4 | 1692 | break; |
2742fd88 | 1693 | |
1da177e4 LT |
1694 | } |
1695 | ||
1696 | exit: | |
2742fd88 | 1697 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
ee337c21 | 1698 | if (retval) |
2742fd88 AC |
1699 | dev_err(&urb->dev->dev, |
1700 | "%s - usb_submit_urb failed with result %d\n", | |
441b62c1 | 1701 | __func__, retval); |
1da177e4 LT |
1702 | } |
1703 | ||
2742fd88 | 1704 | static void edge_bulk_in_callback(struct urb *urb) |
1da177e4 | 1705 | { |
cdc97792 | 1706 | struct edgeport_port *edge_port = urb->context; |
1da177e4 LT |
1707 | unsigned char *data = urb->transfer_buffer; |
1708 | struct tty_struct *tty; | |
ee337c21 | 1709 | int retval = 0; |
1da177e4 | 1710 | int port_number; |
ee337c21 | 1711 | int status = urb->status; |
1da177e4 | 1712 | |
441b62c1 | 1713 | dbg("%s", __func__); |
1da177e4 | 1714 | |
ee337c21 | 1715 | switch (status) { |
1da177e4 LT |
1716 | case 0: |
1717 | /* success */ | |
1718 | break; | |
1719 | case -ECONNRESET: | |
1720 | case -ENOENT: | |
1721 | case -ESHUTDOWN: | |
1722 | /* this urb is terminated, clean up */ | |
ee337c21 | 1723 | dbg("%s - urb shutting down with status: %d", |
441b62c1 | 1724 | __func__, status); |
1da177e4 LT |
1725 | return; |
1726 | default: | |
2742fd88 AC |
1727 | dev_err(&urb->dev->dev, |
1728 | "%s - nonzero read bulk status received: %d\n", | |
1729 | __func__, status); | |
1da177e4 LT |
1730 | } |
1731 | ||
ee337c21 | 1732 | if (status == -EPIPE) |
1da177e4 LT |
1733 | goto exit; |
1734 | ||
ee337c21 | 1735 | if (status) { |
2742fd88 | 1736 | dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__); |
1da177e4 LT |
1737 | return; |
1738 | } | |
1739 | ||
1740 | port_number = edge_port->port->number - edge_port->port->serial->minor; | |
1741 | ||
1742 | if (edge_port->lsr_event) { | |
1743 | edge_port->lsr_event = 0; | |
2742fd88 | 1744 | dbg("%s ===== Port %u LSR Status = %02x, Data = %02x ======", |
441b62c1 | 1745 | __func__, port_number, edge_port->lsr_mask, *data); |
2742fd88 | 1746 | handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data); |
1da177e4 LT |
1747 | /* Adjust buffer length/pointer */ |
1748 | --urb->actual_length; | |
1749 | ++data; | |
1750 | } | |
1751 | ||
95da310e | 1752 | tty = edge_port->port->port.tty; |
1da177e4 | 1753 | if (tty && urb->actual_length) { |
2742fd88 AC |
1754 | usb_serial_debug_data(debug, &edge_port->port->dev, |
1755 | __func__, urb->actual_length, data); | |
1756 | if (edge_port->close_pending) | |
1757 | dbg("%s - close pending, dropping data on the floor", | |
1758 | __func__); | |
1759 | else | |
1760 | edge_tty_recv(&edge_port->port->dev, tty, data, | |
1761 | urb->actual_length); | |
1da177e4 LT |
1762 | edge_port->icount.rx += urb->actual_length; |
1763 | } | |
1764 | ||
1765 | exit: | |
1766 | /* continue read unless stopped */ | |
1767 | spin_lock(&edge_port->ep_lock); | |
1768 | if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) { | |
1769 | urb->dev = edge_port->port->serial->dev; | |
ee337c21 | 1770 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
1da177e4 LT |
1771 | } else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING) { |
1772 | edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED; | |
1773 | } | |
1774 | spin_unlock(&edge_port->ep_lock); | |
ee337c21 | 1775 | if (retval) |
2742fd88 AC |
1776 | dev_err(&urb->dev->dev, |
1777 | "%s - usb_submit_urb failed with result %d\n", | |
441b62c1 | 1778 | __func__, retval); |
1da177e4 LT |
1779 | } |
1780 | ||
2742fd88 AC |
1781 | static void edge_tty_recv(struct device *dev, struct tty_struct *tty, |
1782 | unsigned char *data, int length) | |
1da177e4 | 1783 | { |
2742fd88 | 1784 | int queued; |
1da177e4 | 1785 | |
2742fd88 AC |
1786 | tty_buffer_request_room(tty, length); |
1787 | queued = tty_insert_flip_string(tty, data, length); | |
1788 | if (queued < length) | |
1789 | dev_err(dev, "%s - dropping data, %d bytes lost\n", | |
1790 | __func__, length - queued); | |
1da177e4 LT |
1791 | tty_flip_buffer_push(tty); |
1792 | } | |
1793 | ||
2742fd88 | 1794 | static void edge_bulk_out_callback(struct urb *urb) |
1da177e4 | 1795 | { |
cdc97792 | 1796 | struct usb_serial_port *port = urb->context; |
1da177e4 | 1797 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
ee337c21 | 1798 | int status = urb->status; |
1da177e4 | 1799 | |
2742fd88 | 1800 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1801 | |
1802 | edge_port->ep_write_urb_in_use = 0; | |
1803 | ||
ee337c21 | 1804 | switch (status) { |
1da177e4 LT |
1805 | case 0: |
1806 | /* success */ | |
1807 | break; | |
1808 | case -ECONNRESET: | |
1809 | case -ENOENT: | |
1810 | case -ESHUTDOWN: | |
1811 | /* this urb is terminated, clean up */ | |
ee337c21 | 1812 | dbg("%s - urb shutting down with status: %d", |
441b62c1 | 1813 | __func__, status); |
1da177e4 LT |
1814 | return; |
1815 | default: | |
ee337c21 | 1816 | dev_err(&urb->dev->dev, "%s - nonzero write bulk status " |
441b62c1 | 1817 | "received: %d\n", __func__, status); |
1da177e4 LT |
1818 | } |
1819 | ||
1820 | /* send any buffered data */ | |
95da310e | 1821 | edge_send(port->port.tty); |
1da177e4 LT |
1822 | } |
1823 | ||
95da310e AC |
1824 | static int edge_open(struct tty_struct *tty, |
1825 | struct usb_serial_port *port, struct file *filp) | |
1da177e4 LT |
1826 | { |
1827 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1828 | struct edgeport_serial *edge_serial; | |
1829 | struct usb_device *dev; | |
1830 | struct urb *urb; | |
1831 | int port_number; | |
1832 | int status; | |
1833 | u16 open_settings; | |
1834 | u8 transaction_timeout; | |
1835 | ||
441b62c1 | 1836 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1837 | |
1838 | if (edge_port == NULL) | |
1839 | return -ENODEV; | |
1840 | ||
95da310e AC |
1841 | if (tty) |
1842 | tty->low_latency = low_latency; | |
1da177e4 LT |
1843 | |
1844 | port_number = port->number - port->serial->minor; | |
1845 | switch (port_number) { | |
2742fd88 AC |
1846 | case 0: |
1847 | edge_port->uart_base = UMPMEM_BASE_UART1; | |
1848 | edge_port->dma_address = UMPD_OEDB1_ADDRESS; | |
1849 | break; | |
1850 | case 1: | |
1851 | edge_port->uart_base = UMPMEM_BASE_UART2; | |
1852 | edge_port->dma_address = UMPD_OEDB2_ADDRESS; | |
1853 | break; | |
1854 | default: | |
1855 | dev_err(&port->dev, "Unknown port number!!!\n"); | |
1856 | return -ENODEV; | |
1da177e4 LT |
1857 | } |
1858 | ||
2742fd88 AC |
1859 | dbg("%s - port_number = %d, uart_base = %04x, dma_address = %04x", |
1860 | __func__, port_number, edge_port->uart_base, | |
1861 | edge_port->dma_address); | |
1da177e4 LT |
1862 | |
1863 | dev = port->serial->dev; | |
1864 | ||
2742fd88 AC |
1865 | memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount)); |
1866 | init_waitqueue_head(&edge_port->delta_msr_wait); | |
1da177e4 LT |
1867 | |
1868 | /* turn off loopback */ | |
2742fd88 | 1869 | status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0); |
1da177e4 | 1870 | if (status) { |
2742fd88 AC |
1871 | dev_err(&port->dev, |
1872 | "%s - cannot send clear loopback command, %d\n", | |
441b62c1 | 1873 | __func__, status); |
1da177e4 LT |
1874 | return status; |
1875 | } | |
2742fd88 | 1876 | |
1da177e4 | 1877 | /* set up the port settings */ |
95da310e AC |
1878 | if (tty) |
1879 | edge_set_termios(tty, port, port->port.tty->termios); | |
1da177e4 LT |
1880 | |
1881 | /* open up the port */ | |
1882 | ||
1883 | /* milliseconds to timeout for DMA transfer */ | |
1884 | transaction_timeout = 2; | |
1885 | ||
2742fd88 AC |
1886 | edge_port->ump_read_timeout = |
1887 | max(20, ((transaction_timeout * 3) / 2)); | |
1da177e4 | 1888 | |
2742fd88 AC |
1889 | /* milliseconds to timeout for DMA transfer */ |
1890 | open_settings = (u8)(UMP_DMA_MODE_CONTINOUS | | |
1891 | UMP_PIPE_TRANS_TIMEOUT_ENA | | |
1da177e4 LT |
1892 | (transaction_timeout << 2)); |
1893 | ||
2742fd88 | 1894 | dbg("%s - Sending UMPC_OPEN_PORT", __func__); |
1da177e4 LT |
1895 | |
1896 | /* Tell TI to open and start the port */ | |
2742fd88 AC |
1897 | status = send_cmd(dev, UMPC_OPEN_PORT, |
1898 | (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0); | |
1da177e4 | 1899 | if (status) { |
2742fd88 AC |
1900 | dev_err(&port->dev, "%s - cannot send open command, %d\n", |
1901 | __func__, status); | |
1da177e4 LT |
1902 | return status; |
1903 | } | |
1904 | ||
1905 | /* Start the DMA? */ | |
2742fd88 AC |
1906 | status = send_cmd(dev, UMPC_START_PORT, |
1907 | (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0); | |
1da177e4 | 1908 | if (status) { |
2742fd88 AC |
1909 | dev_err(&port->dev, "%s - cannot send start DMA command, %d\n", |
1910 | __func__, status); | |
1da177e4 LT |
1911 | return status; |
1912 | } | |
1913 | ||
1914 | /* Clear TX and RX buffers in UMP */ | |
2742fd88 | 1915 | status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN); |
1da177e4 | 1916 | if (status) { |
2742fd88 AC |
1917 | dev_err(&port->dev, |
1918 | "%s - cannot send clear buffers command, %d\n", | |
1919 | __func__, status); | |
1da177e4 LT |
1920 | return status; |
1921 | } | |
1922 | ||
1923 | /* Read Initial MSR */ | |
2742fd88 AC |
1924 | status = ti_vread_sync(dev, UMPC_READ_MSR, 0, |
1925 | (__u16)(UMPM_UART1_PORT + port_number), | |
1926 | &edge_port->shadow_msr, 1); | |
1da177e4 | 1927 | if (status) { |
2742fd88 AC |
1928 | dev_err(&port->dev, "%s - cannot send read MSR command, %d\n", |
1929 | __func__, status); | |
1da177e4 LT |
1930 | return status; |
1931 | } | |
1932 | ||
2742fd88 AC |
1933 | dbg("ShadowMSR 0x%X", edge_port->shadow_msr); |
1934 | ||
1da177e4 LT |
1935 | /* Set Initial MCR */ |
1936 | edge_port->shadow_mcr = MCR_RTS | MCR_DTR; | |
2742fd88 | 1937 | dbg("ShadowMCR 0x%X", edge_port->shadow_mcr); |
1da177e4 LT |
1938 | |
1939 | edge_serial = edge_port->edge_serial; | |
241ca64f | 1940 | if (mutex_lock_interruptible(&edge_serial->es_lock)) |
1da177e4 LT |
1941 | return -ERESTARTSYS; |
1942 | if (edge_serial->num_ports_open == 0) { | |
2742fd88 | 1943 | /* we are the first port to open, post the interrupt urb */ |
1da177e4 LT |
1944 | urb = edge_serial->serial->port[0]->interrupt_in_urb; |
1945 | if (!urb) { | |
2742fd88 AC |
1946 | dev_err(&port->dev, |
1947 | "%s - no interrupt urb present, exiting\n", | |
1948 | __func__); | |
1da177e4 | 1949 | status = -EINVAL; |
241ca64f | 1950 | goto release_es_lock; |
1da177e4 LT |
1951 | } |
1952 | urb->complete = edge_interrupt_callback; | |
1953 | urb->context = edge_serial; | |
1954 | urb->dev = dev; | |
2742fd88 | 1955 | status = usb_submit_urb(urb, GFP_KERNEL); |
1da177e4 | 1956 | if (status) { |
2742fd88 AC |
1957 | dev_err(&port->dev, |
1958 | "%s - usb_submit_urb failed with value %d\n", | |
1959 | __func__, status); | |
241ca64f | 1960 | goto release_es_lock; |
1da177e4 LT |
1961 | } |
1962 | } | |
1963 | ||
1964 | /* | |
1965 | * reset the data toggle on the bulk endpoints to work around bug in | |
1966 | * host controllers where things get out of sync some times | |
1967 | */ | |
2742fd88 AC |
1968 | usb_clear_halt(dev, port->write_urb->pipe); |
1969 | usb_clear_halt(dev, port->read_urb->pipe); | |
1da177e4 LT |
1970 | |
1971 | /* start up our bulk read urb */ | |
1972 | urb = port->read_urb; | |
1973 | if (!urb) { | |
2742fd88 AC |
1974 | dev_err(&port->dev, "%s - no read urb present, exiting\n", |
1975 | __func__); | |
1da177e4 LT |
1976 | status = -EINVAL; |
1977 | goto unlink_int_urb; | |
1978 | } | |
1979 | edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; | |
1980 | urb->complete = edge_bulk_in_callback; | |
1981 | urb->context = edge_port; | |
1982 | urb->dev = dev; | |
2742fd88 | 1983 | status = usb_submit_urb(urb, GFP_KERNEL); |
1da177e4 | 1984 | if (status) { |
2742fd88 AC |
1985 | dev_err(&port->dev, |
1986 | "%s - read bulk usb_submit_urb failed with value %d\n", | |
1987 | __func__, status); | |
1da177e4 LT |
1988 | goto unlink_int_urb; |
1989 | } | |
1990 | ||
1991 | ++edge_serial->num_ports_open; | |
1992 | ||
441b62c1 | 1993 | dbg("%s - exited", __func__); |
1da177e4 | 1994 | |
241ca64f | 1995 | goto release_es_lock; |
1da177e4 LT |
1996 | |
1997 | unlink_int_urb: | |
1998 | if (edge_port->edge_serial->num_ports_open == 0) | |
1999 | usb_kill_urb(port->serial->port[0]->interrupt_in_urb); | |
241ca64f MK |
2000 | release_es_lock: |
2001 | mutex_unlock(&edge_serial->es_lock); | |
1da177e4 LT |
2002 | return status; |
2003 | } | |
2004 | ||
95da310e AC |
2005 | static void edge_close(struct tty_struct *tty, |
2006 | struct usb_serial_port *port, struct file *filp) | |
1da177e4 LT |
2007 | { |
2008 | struct edgeport_serial *edge_serial; | |
2009 | struct edgeport_port *edge_port; | |
2010 | int port_number; | |
2011 | int status; | |
2012 | ||
441b62c1 | 2013 | dbg("%s - port %d", __func__, port->number); |
2742fd88 | 2014 | |
1da177e4 LT |
2015 | edge_serial = usb_get_serial_data(port->serial); |
2016 | edge_port = usb_get_serial_port_data(port); | |
2742fd88 | 2017 | if (edge_serial == NULL || edge_port == NULL) |
1da177e4 | 2018 | return; |
2742fd88 AC |
2019 | |
2020 | /* The bulkreadcompletion routine will check | |
1da177e4 LT |
2021 | * this flag and dump add read data */ |
2022 | edge_port->close_pending = 1; | |
2023 | ||
2024 | /* chase the port close and flush */ | |
2742fd88 | 2025 | chase_port(edge_port, (HZ * closing_wait) / 100, 1); |
1da177e4 LT |
2026 | |
2027 | usb_kill_urb(port->read_urb); | |
2028 | usb_kill_urb(port->write_urb); | |
2029 | edge_port->ep_write_urb_in_use = 0; | |
2030 | ||
2031 | /* assuming we can still talk to the device, | |
2032 | * send a close port command to it */ | |
441b62c1 | 2033 | dbg("%s - send umpc_close_port", __func__); |
1da177e4 | 2034 | port_number = port->number - port->serial->minor; |
2742fd88 | 2035 | status = send_cmd(port->serial->dev, |
1da177e4 LT |
2036 | UMPC_CLOSE_PORT, |
2037 | (__u8)(UMPM_UART1_PORT + port_number), | |
2038 | 0, | |
2039 | NULL, | |
2040 | 0); | |
241ca64f | 2041 | mutex_lock(&edge_serial->es_lock); |
1da177e4 LT |
2042 | --edge_port->edge_serial->num_ports_open; |
2043 | if (edge_port->edge_serial->num_ports_open <= 0) { | |
2044 | /* last port is now closed, let's shut down our interrupt urb */ | |
2045 | usb_kill_urb(port->serial->port[0]->interrupt_in_urb); | |
2046 | edge_port->edge_serial->num_ports_open = 0; | |
2047 | } | |
241ca64f | 2048 | mutex_unlock(&edge_serial->es_lock); |
1da177e4 LT |
2049 | edge_port->close_pending = 0; |
2050 | ||
441b62c1 | 2051 | dbg("%s - exited", __func__); |
1da177e4 LT |
2052 | } |
2053 | ||
95da310e AC |
2054 | static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, |
2055 | const unsigned char *data, int count) | |
1da177e4 LT |
2056 | { |
2057 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
2058 | unsigned long flags; | |
2059 | ||
441b62c1 | 2060 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
2061 | |
2062 | if (count == 0) { | |
441b62c1 | 2063 | dbg("%s - write request of 0 bytes", __func__); |
1da177e4 LT |
2064 | return 0; |
2065 | } | |
2066 | ||
2067 | if (edge_port == NULL) | |
2068 | return -ENODEV; | |
2069 | if (edge_port->close_pending == 1) | |
2070 | return -ENODEV; | |
2071 | ||
2072 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
2073 | count = edge_buf_put(edge_port->ep_out_buf, data, count); | |
2074 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
2075 | ||
95da310e | 2076 | edge_send(tty); |
1da177e4 LT |
2077 | |
2078 | return count; | |
2079 | } | |
2080 | ||
95da310e | 2081 | static void edge_send(struct tty_struct *tty) |
1da177e4 | 2082 | { |
95da310e | 2083 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
2084 | int count, result; |
2085 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1da177e4 LT |
2086 | unsigned long flags; |
2087 | ||
2088 | ||
441b62c1 | 2089 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
2090 | |
2091 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
2092 | ||
2093 | if (edge_port->ep_write_urb_in_use) { | |
2094 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
2095 | return; | |
2096 | } | |
2097 | ||
2098 | count = edge_buf_get(edge_port->ep_out_buf, | |
2099 | port->write_urb->transfer_buffer, | |
2100 | port->bulk_out_size); | |
2101 | ||
2102 | if (count == 0) { | |
2103 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
2104 | return; | |
2105 | } | |
2106 | ||
2107 | edge_port->ep_write_urb_in_use = 1; | |
2108 | ||
2109 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
2110 | ||
2742fd88 AC |
2111 | usb_serial_debug_data(debug, &port->dev, __func__, count, |
2112 | port->write_urb->transfer_buffer); | |
1da177e4 LT |
2113 | |
2114 | /* set up our urb */ | |
2742fd88 AC |
2115 | usb_fill_bulk_urb(port->write_urb, port->serial->dev, |
2116 | usb_sndbulkpipe(port->serial->dev, | |
1da177e4 LT |
2117 | port->bulk_out_endpointAddress), |
2118 | port->write_urb->transfer_buffer, count, | |
2119 | edge_bulk_out_callback, | |
2120 | port); | |
2121 | ||
2122 | /* send the data out the bulk port */ | |
2123 | result = usb_submit_urb(port->write_urb, GFP_ATOMIC); | |
2124 | if (result) { | |
2742fd88 AC |
2125 | dev_err(&port->dev, |
2126 | "%s - failed submitting write urb, error %d\n", | |
2127 | __func__, result); | |
1da177e4 | 2128 | edge_port->ep_write_urb_in_use = 0; |
2742fd88 AC |
2129 | /* TODO: reschedule edge_send */ |
2130 | } else | |
1da177e4 | 2131 | edge_port->icount.tx += count; |
1da177e4 LT |
2132 | |
2133 | /* wakeup any process waiting for writes to complete */ | |
2134 | /* there is now more room in the buffer for new writes */ | |
2742fd88 | 2135 | if (tty) |
1da177e4 | 2136 | tty_wakeup(tty); |
1da177e4 LT |
2137 | } |
2138 | ||
95da310e | 2139 | static int edge_write_room(struct tty_struct *tty) |
1da177e4 | 2140 | { |
95da310e | 2141 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
2142 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
2143 | int room = 0; | |
2144 | unsigned long flags; | |
2145 | ||
441b62c1 | 2146 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
2147 | |
2148 | if (edge_port == NULL) | |
2742fd88 | 2149 | return 0; |
1da177e4 | 2150 | if (edge_port->close_pending == 1) |
2742fd88 | 2151 | return 0; |
1da177e4 LT |
2152 | |
2153 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
2154 | room = edge_buf_space_avail(edge_port->ep_out_buf); | |
2155 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
2156 | ||
441b62c1 | 2157 | dbg("%s - returns %d", __func__, room); |
1da177e4 LT |
2158 | return room; |
2159 | } | |
2160 | ||
95da310e | 2161 | static int edge_chars_in_buffer(struct tty_struct *tty) |
1da177e4 | 2162 | { |
95da310e | 2163 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
2164 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
2165 | int chars = 0; | |
2166 | unsigned long flags; | |
2167 | ||
441b62c1 | 2168 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
2169 | |
2170 | if (edge_port == NULL) | |
2742fd88 | 2171 | return 0; |
1da177e4 | 2172 | if (edge_port->close_pending == 1) |
2742fd88 | 2173 | return 0; |
1da177e4 LT |
2174 | |
2175 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
2176 | chars = edge_buf_data_avail(edge_port->ep_out_buf); | |
2177 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
2178 | ||
2742fd88 | 2179 | dbg("%s - returns %d", __func__, chars); |
1da177e4 LT |
2180 | return chars; |
2181 | } | |
2182 | ||
95da310e | 2183 | static void edge_throttle(struct tty_struct *tty) |
1da177e4 | 2184 | { |
95da310e | 2185 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 2186 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1da177e4 LT |
2187 | int status; |
2188 | ||
441b62c1 | 2189 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
2190 | |
2191 | if (edge_port == NULL) | |
2192 | return; | |
2193 | ||
1da177e4 LT |
2194 | /* if we are implementing XON/XOFF, send the stop character */ |
2195 | if (I_IXOFF(tty)) { | |
2196 | unsigned char stop_char = STOP_CHAR(tty); | |
95da310e AC |
2197 | status = edge_write(tty, port, &stop_char, 1); |
2198 | if (status <= 0) { | |
2199 | dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status); | |
2200 | } | |
1da177e4 LT |
2201 | } |
2202 | ||
2203 | /* if we are implementing RTS/CTS, stop reads */ | |
2204 | /* and the Edgeport will clear the RTS line */ | |
2205 | if (C_CRTSCTS(tty)) | |
2206 | stop_read(edge_port); | |
2207 | ||
2208 | } | |
2209 | ||
95da310e | 2210 | static void edge_unthrottle(struct tty_struct *tty) |
1da177e4 | 2211 | { |
95da310e | 2212 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 2213 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1da177e4 LT |
2214 | int status; |
2215 | ||
441b62c1 | 2216 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
2217 | |
2218 | if (edge_port == NULL) | |
2219 | return; | |
2220 | ||
1da177e4 LT |
2221 | /* if we are implementing XON/XOFF, send the start character */ |
2222 | if (I_IXOFF(tty)) { | |
2223 | unsigned char start_char = START_CHAR(tty); | |
95da310e AC |
2224 | status = edge_write(tty, port, &start_char, 1); |
2225 | if (status <= 0) { | |
2226 | dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status); | |
2227 | } | |
1da177e4 | 2228 | } |
1da177e4 LT |
2229 | /* if we are implementing RTS/CTS, restart reads */ |
2230 | /* are the Edgeport will assert the RTS line */ | |
2231 | if (C_CRTSCTS(tty)) { | |
2232 | status = restart_read(edge_port); | |
2233 | if (status) | |
2742fd88 AC |
2234 | dev_err(&port->dev, |
2235 | "%s - read bulk usb_submit_urb failed: %d\n", | |
2236 | __func__, status); | |
1da177e4 LT |
2237 | } |
2238 | ||
2239 | } | |
2240 | ||
2241 | static void stop_read(struct edgeport_port *edge_port) | |
2242 | { | |
2243 | unsigned long flags; | |
2244 | ||
2245 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
2246 | ||
2247 | if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) | |
2248 | edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING; | |
2249 | edge_port->shadow_mcr &= ~MCR_RTS; | |
2250 | ||
2251 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
2252 | } | |
2253 | ||
2254 | static int restart_read(struct edgeport_port *edge_port) | |
2255 | { | |
2256 | struct urb *urb; | |
2257 | int status = 0; | |
2258 | unsigned long flags; | |
2259 | ||
2260 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
2261 | ||
2262 | if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) { | |
2263 | urb = edge_port->port->read_urb; | |
2264 | urb->complete = edge_bulk_in_callback; | |
2265 | urb->context = edge_port; | |
2266 | urb->dev = edge_port->port->serial->dev; | |
efdff608 | 2267 | status = usb_submit_urb(urb, GFP_ATOMIC); |
1da177e4 LT |
2268 | } |
2269 | edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; | |
2270 | edge_port->shadow_mcr |= MCR_RTS; | |
2271 | ||
2272 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
2273 | ||
2274 | return status; | |
2275 | } | |
2276 | ||
95da310e AC |
2277 | static void change_port_settings(struct tty_struct *tty, |
2278 | struct edgeport_port *edge_port, struct ktermios *old_termios) | |
1da177e4 LT |
2279 | { |
2280 | struct ump_uart_config *config; | |
1da177e4 LT |
2281 | int baud; |
2282 | unsigned cflag; | |
2283 | int status; | |
2742fd88 AC |
2284 | int port_number = edge_port->port->number - |
2285 | edge_port->port->serial->minor; | |
1da177e4 | 2286 | |
441b62c1 | 2287 | dbg("%s - port %d", __func__, edge_port->port->number); |
1da177e4 | 2288 | |
95da310e | 2289 | config = kmalloc (sizeof (*config), GFP_KERNEL); |
1da177e4 | 2290 | if (!config) { |
2742fd88 AC |
2291 | *tty->termios = *old_termios; |
2292 | dev_err(&edge_port->port->dev, "%s - out of memory\n", | |
2293 | __func__); | |
1da177e4 LT |
2294 | return; |
2295 | } | |
2296 | ||
2297 | cflag = tty->termios->c_cflag; | |
2298 | ||
2299 | config->wFlags = 0; | |
2300 | ||
2301 | /* These flags must be set */ | |
2302 | config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT; | |
2303 | config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR; | |
2304 | config->bUartMode = (__u8)(edge_port->bUartMode); | |
2305 | ||
2306 | switch (cflag & CSIZE) { | |
2742fd88 AC |
2307 | case CS5: |
2308 | config->bDataBits = UMP_UART_CHAR5BITS; | |
2309 | dbg("%s - data bits = 5", __func__); | |
2310 | break; | |
2311 | case CS6: | |
2312 | config->bDataBits = UMP_UART_CHAR6BITS; | |
2313 | dbg("%s - data bits = 6", __func__); | |
2314 | break; | |
2315 | case CS7: | |
2316 | config->bDataBits = UMP_UART_CHAR7BITS; | |
2317 | dbg("%s - data bits = 7", __func__); | |
2318 | break; | |
2319 | default: | |
2320 | case CS8: | |
2321 | config->bDataBits = UMP_UART_CHAR8BITS; | |
2322 | dbg("%s - data bits = 8", __func__); | |
1da177e4 LT |
2323 | break; |
2324 | } | |
2325 | ||
2326 | if (cflag & PARENB) { | |
2327 | if (cflag & PARODD) { | |
2328 | config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; | |
2329 | config->bParity = UMP_UART_ODDPARITY; | |
441b62c1 | 2330 | dbg("%s - parity = odd", __func__); |
1da177e4 LT |
2331 | } else { |
2332 | config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; | |
2333 | config->bParity = UMP_UART_EVENPARITY; | |
441b62c1 | 2334 | dbg("%s - parity = even", __func__); |
1da177e4 LT |
2335 | } |
2336 | } else { | |
2742fd88 | 2337 | config->bParity = UMP_UART_NOPARITY; |
441b62c1 | 2338 | dbg("%s - parity = none", __func__); |
1da177e4 LT |
2339 | } |
2340 | ||
2341 | if (cflag & CSTOPB) { | |
2342 | config->bStopBits = UMP_UART_STOPBIT2; | |
441b62c1 | 2343 | dbg("%s - stop bits = 2", __func__); |
1da177e4 LT |
2344 | } else { |
2345 | config->bStopBits = UMP_UART_STOPBIT1; | |
441b62c1 | 2346 | dbg("%s - stop bits = 1", __func__); |
1da177e4 LT |
2347 | } |
2348 | ||
2349 | /* figure out the flow control settings */ | |
2350 | if (cflag & CRTSCTS) { | |
2351 | config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW; | |
2352 | config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW; | |
441b62c1 | 2353 | dbg("%s - RTS/CTS is enabled", __func__); |
1da177e4 | 2354 | } else { |
441b62c1 | 2355 | dbg("%s - RTS/CTS is disabled", __func__); |
1da177e4 LT |
2356 | tty->hw_stopped = 0; |
2357 | restart_read(edge_port); | |
2358 | } | |
2359 | ||
2742fd88 AC |
2360 | /* if we are implementing XON/XOFF, set the start and stop |
2361 | character in the device */ | |
2362 | config->cXon = START_CHAR(tty); | |
2363 | config->cXoff = STOP_CHAR(tty); | |
1da177e4 | 2364 | |
2742fd88 AC |
2365 | /* if we are implementing INBOUND XON/XOFF */ |
2366 | if (I_IXOFF(tty)) { | |
2367 | config->wFlags |= UMP_MASK_UART_FLAGS_IN_X; | |
2368 | dbg("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", | |
2369 | __func__, config->cXon, config->cXoff); | |
2370 | } else | |
2371 | dbg("%s - INBOUND XON/XOFF is disabled", __func__); | |
1da177e4 | 2372 | |
2742fd88 AC |
2373 | /* if we are implementing OUTBOUND XON/XOFF */ |
2374 | if (I_IXON(tty)) { | |
2375 | config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X; | |
2376 | dbg("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", | |
2377 | __func__, config->cXon, config->cXoff); | |
2378 | } else | |
2379 | dbg("%s - OUTBOUND XON/XOFF is disabled", __func__); | |
1da177e4 | 2380 | |
d5f5bcd4 AC |
2381 | tty->termios->c_cflag &= ~CMSPAR; |
2382 | ||
1da177e4 LT |
2383 | /* Round the baud rate */ |
2384 | baud = tty_get_baud_rate(tty); | |
2385 | if (!baud) { | |
2386 | /* pick a default, any default... */ | |
2387 | baud = 9600; | |
d5f5bcd4 AC |
2388 | } else |
2389 | tty_encode_baud_rate(tty, baud, baud); | |
2390 | ||
1da177e4 LT |
2391 | edge_port->baud_rate = baud; |
2392 | config->wBaudRate = (__u16)((461550L + baud/2) / baud); | |
2393 | ||
d5f5bcd4 AC |
2394 | /* FIXME: Recompute actual baud from divisor here */ |
2395 | ||
2742fd88 AC |
2396 | dbg("%s - baud rate = %d, wBaudRate = %d", __func__, baud, |
2397 | config->wBaudRate); | |
1da177e4 | 2398 | |
2742fd88 AC |
2399 | dbg("wBaudRate: %d", (int)(461550L / config->wBaudRate)); |
2400 | dbg("wFlags: 0x%x", config->wFlags); | |
2401 | dbg("bDataBits: %d", config->bDataBits); | |
2402 | dbg("bParity: %d", config->bParity); | |
2403 | dbg("bStopBits: %d", config->bStopBits); | |
2404 | dbg("cXon: %d", config->cXon); | |
2405 | dbg("cXoff: %d", config->cXoff); | |
2406 | dbg("bUartMode: %d", config->bUartMode); | |
1da177e4 LT |
2407 | |
2408 | /* move the word values into big endian mode */ | |
2742fd88 AC |
2409 | cpu_to_be16s(&config->wFlags); |
2410 | cpu_to_be16s(&config->wBaudRate); | |
1da177e4 | 2411 | |
2742fd88 | 2412 | status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG, |
1da177e4 | 2413 | (__u8)(UMPM_UART1_PORT + port_number), |
2742fd88 AC |
2414 | 0, (__u8 *)config, sizeof(*config)); |
2415 | if (status) | |
2416 | dbg("%s - error %d when trying to write config to device", | |
441b62c1 | 2417 | __func__, status); |
2742fd88 | 2418 | kfree(config); |
1da177e4 LT |
2419 | return; |
2420 | } | |
2421 | ||
2e0ddd62 | 2422 | static void edge_set_termios(struct tty_struct *tty, |
95da310e | 2423 | struct usb_serial_port *port, struct ktermios *old_termios) |
1da177e4 LT |
2424 | { |
2425 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
95da310e AC |
2426 | unsigned int cflag; |
2427 | ||
2428 | cflag = tty->termios->c_cflag; | |
1da177e4 | 2429 | |
441b62c1 | 2430 | dbg("%s - clfag %08x iflag %08x", __func__, |
1da177e4 | 2431 | tty->termios->c_cflag, tty->termios->c_iflag); |
441b62c1 | 2432 | dbg("%s - old clfag %08x old iflag %08x", __func__, |
d5f5bcd4 | 2433 | old_termios->c_cflag, old_termios->c_iflag); |
441b62c1 | 2434 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
2435 | |
2436 | if (edge_port == NULL) | |
2437 | return; | |
1da177e4 | 2438 | /* change the port settings to the new ones specified */ |
95da310e AC |
2439 | change_port_settings(tty, edge_port, old_termios); |
2440 | return; | |
1da177e4 LT |
2441 | } |
2442 | ||
95da310e | 2443 | static int edge_tiocmset(struct tty_struct *tty, struct file *file, |
2742fd88 | 2444 | unsigned int set, unsigned int clear) |
1da177e4 | 2445 | { |
95da310e | 2446 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
2447 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
2448 | unsigned int mcr; | |
3d71fe0b | 2449 | unsigned long flags; |
1da177e4 | 2450 | |
441b62c1 | 2451 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 2452 | |
3d71fe0b | 2453 | spin_lock_irqsave(&edge_port->ep_lock, flags); |
1da177e4 LT |
2454 | mcr = edge_port->shadow_mcr; |
2455 | if (set & TIOCM_RTS) | |
2456 | mcr |= MCR_RTS; | |
2457 | if (set & TIOCM_DTR) | |
2458 | mcr |= MCR_DTR; | |
2459 | if (set & TIOCM_LOOP) | |
2460 | mcr |= MCR_LOOPBACK; | |
2461 | ||
2462 | if (clear & TIOCM_RTS) | |
2463 | mcr &= ~MCR_RTS; | |
2464 | if (clear & TIOCM_DTR) | |
2465 | mcr &= ~MCR_DTR; | |
2466 | if (clear & TIOCM_LOOP) | |
2467 | mcr &= ~MCR_LOOPBACK; | |
2468 | ||
2469 | edge_port->shadow_mcr = mcr; | |
3d71fe0b | 2470 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); |
1da177e4 | 2471 | |
2742fd88 | 2472 | restore_mcr(edge_port, mcr); |
1da177e4 LT |
2473 | return 0; |
2474 | } | |
2475 | ||
95da310e | 2476 | static int edge_tiocmget(struct tty_struct *tty, struct file *file) |
1da177e4 | 2477 | { |
95da310e | 2478 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
2479 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
2480 | unsigned int result = 0; | |
2481 | unsigned int msr; | |
2482 | unsigned int mcr; | |
3d71fe0b | 2483 | unsigned long flags; |
1da177e4 | 2484 | |
441b62c1 | 2485 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 2486 | |
3d71fe0b AC |
2487 | spin_lock_irqsave(&edge_port->ep_lock, flags); |
2488 | ||
1da177e4 LT |
2489 | msr = edge_port->shadow_msr; |
2490 | mcr = edge_port->shadow_mcr; | |
2491 | result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ | |
2492 | | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ | |
2493 | | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ | |
2494 | | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */ | |
2495 | | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ | |
2496 | | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ | |
2497 | ||
2498 | ||
441b62c1 | 2499 | dbg("%s -- %x", __func__, result); |
3d71fe0b | 2500 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); |
1da177e4 LT |
2501 | |
2502 | return result; | |
2503 | } | |
2504 | ||
2742fd88 AC |
2505 | static int get_serial_info(struct edgeport_port *edge_port, |
2506 | struct serial_struct __user *retinfo) | |
1da177e4 LT |
2507 | { |
2508 | struct serial_struct tmp; | |
2509 | ||
2510 | if (!retinfo) | |
2511 | return -EFAULT; | |
2512 | ||
2513 | memset(&tmp, 0, sizeof(tmp)); | |
2514 | ||
2515 | tmp.type = PORT_16550A; | |
2516 | tmp.line = edge_port->port->serial->minor; | |
2517 | tmp.port = edge_port->port->number; | |
2518 | tmp.irq = 0; | |
2519 | tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; | |
2520 | tmp.xmit_fifo_size = edge_port->port->bulk_out_size; | |
2521 | tmp.baud_base = 9600; | |
2522 | tmp.close_delay = 5*HZ; | |
2523 | tmp.closing_wait = closing_wait; | |
1da177e4 LT |
2524 | |
2525 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) | |
2526 | return -EFAULT; | |
2527 | return 0; | |
2528 | } | |
2529 | ||
95da310e | 2530 | static int edge_ioctl(struct tty_struct *tty, struct file *file, |
2742fd88 | 2531 | unsigned int cmd, unsigned long arg) |
1da177e4 | 2532 | { |
95da310e | 2533 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
2534 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
2535 | struct async_icount cnow; | |
2536 | struct async_icount cprev; | |
2537 | ||
441b62c1 | 2538 | dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd); |
1da177e4 LT |
2539 | |
2540 | switch (cmd) { | |
2742fd88 AC |
2541 | case TIOCGSERIAL: |
2542 | dbg("%s - (%d) TIOCGSERIAL", __func__, port->number); | |
2543 | return get_serial_info(edge_port, | |
2544 | (struct serial_struct __user *) arg); | |
2545 | case TIOCMIWAIT: | |
2546 | dbg("%s - (%d) TIOCMIWAIT", __func__, port->number); | |
2547 | cprev = edge_port->icount; | |
2548 | while (1) { | |
2549 | interruptible_sleep_on(&edge_port->delta_msr_wait); | |
2550 | /* see if a signal did it */ | |
2551 | if (signal_pending(current)) | |
2552 | return -ERESTARTSYS; | |
2553 | cnow = edge_port->icount; | |
2554 | if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && | |
2555 | cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) | |
2556 | return -EIO; /* no change => error */ | |
2557 | if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || | |
2558 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || | |
2559 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || | |
2560 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) { | |
2561 | return 0; | |
1da177e4 | 2562 | } |
2742fd88 AC |
2563 | cprev = cnow; |
2564 | } | |
2565 | /* not reached */ | |
2566 | break; | |
2567 | case TIOCGICOUNT: | |
2568 | dbg("%s - (%d) TIOCGICOUNT RX=%d, TX=%d", __func__, | |
2569 | port->number, edge_port->icount.rx, edge_port->icount.tx); | |
2570 | if (copy_to_user((void __user *)arg, &edge_port->icount, | |
2571 | sizeof(edge_port->icount))) | |
2572 | return -EFAULT; | |
2573 | return 0; | |
1da177e4 | 2574 | } |
1da177e4 LT |
2575 | return -ENOIOCTLCMD; |
2576 | } | |
2577 | ||
95da310e | 2578 | static void edge_break(struct tty_struct *tty, int break_state) |
1da177e4 | 2579 | { |
95da310e | 2580 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
2581 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
2582 | int status; | |
2742fd88 | 2583 | int bv = 0; /* Off */ |
1da177e4 | 2584 | |
95da310e | 2585 | dbg("%s - state = %d", __func__, break_state); |
1da177e4 LT |
2586 | |
2587 | /* chase the port close */ | |
2742fd88 | 2588 | chase_port(edge_port, 0, 0); |
1da177e4 | 2589 | |
95da310e | 2590 | if (break_state == -1) |
2742fd88 AC |
2591 | bv = 1; /* On */ |
2592 | status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv); | |
2593 | if (status) | |
2594 | dbg("%s - error %d sending break set/clear command.", | |
441b62c1 | 2595 | __func__, status); |
1da177e4 LT |
2596 | } |
2597 | ||
2742fd88 | 2598 | static int edge_startup(struct usb_serial *serial) |
1da177e4 LT |
2599 | { |
2600 | struct edgeport_serial *edge_serial; | |
2601 | struct edgeport_port *edge_port; | |
2602 | struct usb_device *dev; | |
2603 | int status; | |
2604 | int i; | |
2605 | ||
2606 | dev = serial->dev; | |
2607 | ||
2608 | /* create our private serial structure */ | |
80b6ca48 | 2609 | edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL); |
1da177e4 | 2610 | if (edge_serial == NULL) { |
441b62c1 | 2611 | dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__); |
1da177e4 LT |
2612 | return -ENOMEM; |
2613 | } | |
241ca64f | 2614 | mutex_init(&edge_serial->es_lock); |
1da177e4 LT |
2615 | edge_serial->serial = serial; |
2616 | usb_set_serial_data(serial, edge_serial); | |
2617 | ||
2742fd88 | 2618 | status = download_fw(edge_serial); |
1da177e4 | 2619 | if (status) { |
2742fd88 | 2620 | kfree(edge_serial); |
1da177e4 LT |
2621 | return status; |
2622 | } | |
2623 | ||
2624 | /* set up our port private structures */ | |
2625 | for (i = 0; i < serial->num_ports; ++i) { | |
80b6ca48 | 2626 | edge_port = kzalloc(sizeof(struct edgeport_port), GFP_KERNEL); |
1da177e4 | 2627 | if (edge_port == NULL) { |
2742fd88 AC |
2628 | dev_err(&serial->dev->dev, "%s - Out of memory\n", |
2629 | __func__); | |
1da177e4 LT |
2630 | goto cleanup; |
2631 | } | |
1da177e4 LT |
2632 | spin_lock_init(&edge_port->ep_lock); |
2633 | edge_port->ep_out_buf = edge_buf_alloc(EDGE_OUT_BUF_SIZE); | |
2634 | if (edge_port->ep_out_buf == NULL) { | |
2742fd88 AC |
2635 | dev_err(&serial->dev->dev, "%s - Out of memory\n", |
2636 | __func__); | |
1da177e4 LT |
2637 | kfree(edge_port); |
2638 | goto cleanup; | |
2639 | } | |
2640 | edge_port->port = serial->port[i]; | |
2641 | edge_port->edge_serial = edge_serial; | |
2642 | usb_set_serial_port_data(serial->port[i], edge_port); | |
fc4cbd75 | 2643 | edge_port->bUartMode = default_uart_mode; |
1da177e4 | 2644 | } |
2742fd88 | 2645 | |
1da177e4 LT |
2646 | return 0; |
2647 | ||
2648 | cleanup: | |
2742fd88 | 2649 | for (--i; i >= 0; --i) { |
1da177e4 LT |
2650 | edge_port = usb_get_serial_port_data(serial->port[i]); |
2651 | edge_buf_free(edge_port->ep_out_buf); | |
2652 | kfree(edge_port); | |
2653 | usb_set_serial_port_data(serial->port[i], NULL); | |
2654 | } | |
2742fd88 | 2655 | kfree(edge_serial); |
1da177e4 LT |
2656 | usb_set_serial_data(serial, NULL); |
2657 | return -ENOMEM; | |
2658 | } | |
2659 | ||
2742fd88 | 2660 | static void edge_shutdown(struct usb_serial *serial) |
1da177e4 LT |
2661 | { |
2662 | int i; | |
2663 | struct edgeport_port *edge_port; | |
2664 | ||
2742fd88 | 2665 | dbg("%s", __func__); |
1da177e4 | 2666 | |
0d46c007 | 2667 | for (i = 0; i < serial->num_ports; ++i) { |
1da177e4 | 2668 | edge_port = usb_get_serial_port_data(serial->port[i]); |
fc4cbd75 | 2669 | edge_remove_sysfs_attrs(edge_port->port); |
0d46c007 JJ |
2670 | edge_buf_free(edge_port->ep_out_buf); |
2671 | kfree(edge_port); | |
1da177e4 LT |
2672 | usb_set_serial_port_data(serial->port[i], NULL); |
2673 | } | |
0d46c007 | 2674 | kfree(usb_get_serial_data(serial)); |
1da177e4 LT |
2675 | usb_set_serial_data(serial, NULL); |
2676 | } | |
2677 | ||
2678 | ||
fc4cbd75 MP |
2679 | /* Sysfs Attributes */ |
2680 | ||
2681 | static ssize_t show_uart_mode(struct device *dev, | |
2682 | struct device_attribute *attr, char *buf) | |
2683 | { | |
2684 | struct usb_serial_port *port = to_usb_serial_port(dev); | |
2685 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
2686 | ||
2687 | return sprintf(buf, "%d\n", edge_port->bUartMode); | |
2688 | } | |
2689 | ||
2690 | static ssize_t store_uart_mode(struct device *dev, | |
2691 | struct device_attribute *attr, const char *valbuf, size_t count) | |
2692 | { | |
2693 | struct usb_serial_port *port = to_usb_serial_port(dev); | |
2694 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
2695 | unsigned int v = simple_strtoul(valbuf, NULL, 0); | |
2696 | ||
441b62c1 | 2697 | dbg("%s: setting uart_mode = %d", __func__, v); |
fc4cbd75 MP |
2698 | |
2699 | if (v < 256) | |
2700 | edge_port->bUartMode = v; | |
2701 | else | |
441b62c1 | 2702 | dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v); |
fc4cbd75 MP |
2703 | |
2704 | return count; | |
2705 | } | |
2706 | ||
2742fd88 AC |
2707 | static DEVICE_ATTR(uart_mode, S_IWUSR | S_IRUGO, show_uart_mode, |
2708 | store_uart_mode); | |
fc4cbd75 MP |
2709 | |
2710 | static int edge_create_sysfs_attrs(struct usb_serial_port *port) | |
2711 | { | |
2712 | return device_create_file(&port->dev, &dev_attr_uart_mode); | |
2713 | } | |
2714 | ||
2715 | static int edge_remove_sysfs_attrs(struct usb_serial_port *port) | |
2716 | { | |
2717 | device_remove_file(&port->dev, &dev_attr_uart_mode); | |
2718 | return 0; | |
2719 | } | |
2720 | ||
2721 | ||
1da177e4 LT |
2722 | /* Circular Buffer */ |
2723 | ||
2724 | /* | |
2725 | * edge_buf_alloc | |
2726 | * | |
2727 | * Allocate a circular buffer and all associated memory. | |
2728 | */ | |
2729 | ||
2730 | static struct edge_buf *edge_buf_alloc(unsigned int size) | |
2731 | { | |
2732 | struct edge_buf *eb; | |
2733 | ||
2734 | ||
2735 | if (size == 0) | |
2736 | return NULL; | |
2737 | ||
5cbded58 | 2738 | eb = kmalloc(sizeof(struct edge_buf), GFP_KERNEL); |
1da177e4 LT |
2739 | if (eb == NULL) |
2740 | return NULL; | |
2741 | ||
2742 | eb->buf_buf = kmalloc(size, GFP_KERNEL); | |
2743 | if (eb->buf_buf == NULL) { | |
2744 | kfree(eb); | |
2745 | return NULL; | |
2746 | } | |
2747 | ||
2748 | eb->buf_size = size; | |
2749 | eb->buf_get = eb->buf_put = eb->buf_buf; | |
2750 | ||
2751 | return eb; | |
2752 | } | |
2753 | ||
2754 | ||
2755 | /* | |
2756 | * edge_buf_free | |
2757 | * | |
2758 | * Free the buffer and all associated memory. | |
2759 | */ | |
2760 | ||
3d48586c | 2761 | static void edge_buf_free(struct edge_buf *eb) |
1da177e4 | 2762 | { |
1bc3c9e1 JJ |
2763 | if (eb) { |
2764 | kfree(eb->buf_buf); | |
1da177e4 LT |
2765 | kfree(eb); |
2766 | } | |
2767 | } | |
2768 | ||
2769 | ||
2770 | /* | |
2771 | * edge_buf_clear | |
2772 | * | |
2773 | * Clear out all data in the circular buffer. | |
2774 | */ | |
2775 | ||
2776 | static void edge_buf_clear(struct edge_buf *eb) | |
2777 | { | |
2742fd88 AC |
2778 | if (eb != NULL) |
2779 | eb->buf_get = eb->buf_put; | |
2780 | /* equivalent to a get of all data available */ | |
1da177e4 LT |
2781 | } |
2782 | ||
2783 | ||
2784 | /* | |
2785 | * edge_buf_data_avail | |
2786 | * | |
2787 | * Return the number of bytes of data available in the circular | |
2788 | * buffer. | |
2789 | */ | |
2790 | ||
2791 | static unsigned int edge_buf_data_avail(struct edge_buf *eb) | |
2792 | { | |
2742fd88 | 2793 | if (eb == NULL) |
1da177e4 | 2794 | return 0; |
2742fd88 | 2795 | return ((eb->buf_size + eb->buf_put - eb->buf_get) % eb->buf_size); |
1da177e4 LT |
2796 | } |
2797 | ||
2798 | ||
2799 | /* | |
2800 | * edge_buf_space_avail | |
2801 | * | |
2802 | * Return the number of bytes of space available in the circular | |
2803 | * buffer. | |
2804 | */ | |
2805 | ||
2806 | static unsigned int edge_buf_space_avail(struct edge_buf *eb) | |
2807 | { | |
2742fd88 | 2808 | if (eb == NULL) |
1da177e4 | 2809 | return 0; |
2742fd88 | 2810 | return ((eb->buf_size + eb->buf_get - eb->buf_put - 1) % eb->buf_size); |
1da177e4 LT |
2811 | } |
2812 | ||
2813 | ||
2814 | /* | |
2815 | * edge_buf_put | |
2816 | * | |
2817 | * Copy data data from a user buffer and put it into the circular buffer. | |
2818 | * Restrict to the amount of space available. | |
2819 | * | |
2820 | * Return the number of bytes copied. | |
2821 | */ | |
2822 | ||
2823 | static unsigned int edge_buf_put(struct edge_buf *eb, const char *buf, | |
2824 | unsigned int count) | |
2825 | { | |
2826 | unsigned int len; | |
2827 | ||
2828 | ||
2829 | if (eb == NULL) | |
2830 | return 0; | |
2831 | ||
2832 | len = edge_buf_space_avail(eb); | |
2833 | if (count > len) | |
2834 | count = len; | |
2835 | ||
2836 | if (count == 0) | |
2837 | return 0; | |
2838 | ||
2839 | len = eb->buf_buf + eb->buf_size - eb->buf_put; | |
2840 | if (count > len) { | |
2841 | memcpy(eb->buf_put, buf, len); | |
2842 | memcpy(eb->buf_buf, buf+len, count - len); | |
2843 | eb->buf_put = eb->buf_buf + count - len; | |
2844 | } else { | |
2845 | memcpy(eb->buf_put, buf, count); | |
2846 | if (count < len) | |
2847 | eb->buf_put += count; | |
2848 | else /* count == len */ | |
2849 | eb->buf_put = eb->buf_buf; | |
2850 | } | |
2851 | ||
2852 | return count; | |
2853 | } | |
2854 | ||
2855 | ||
2856 | /* | |
2857 | * edge_buf_get | |
2858 | * | |
2859 | * Get data from the circular buffer and copy to the given buffer. | |
2860 | * Restrict to the amount of data available. | |
2861 | * | |
2862 | * Return the number of bytes copied. | |
2863 | */ | |
2864 | ||
2865 | static unsigned int edge_buf_get(struct edge_buf *eb, char *buf, | |
2866 | unsigned int count) | |
2867 | { | |
2868 | unsigned int len; | |
2869 | ||
2870 | ||
2871 | if (eb == NULL) | |
2872 | return 0; | |
2873 | ||
2874 | len = edge_buf_data_avail(eb); | |
2875 | if (count > len) | |
2876 | count = len; | |
2877 | ||
2878 | if (count == 0) | |
2879 | return 0; | |
2880 | ||
2881 | len = eb->buf_buf + eb->buf_size - eb->buf_get; | |
2882 | if (count > len) { | |
2883 | memcpy(buf, eb->buf_get, len); | |
2884 | memcpy(buf+len, eb->buf_buf, count - len); | |
2885 | eb->buf_get = eb->buf_buf + count - len; | |
2886 | } else { | |
2887 | memcpy(buf, eb->buf_get, count); | |
2888 | if (count < len) | |
2889 | eb->buf_get += count; | |
2890 | else /* count == len */ | |
2891 | eb->buf_get = eb->buf_buf; | |
2892 | } | |
2893 | ||
2894 | return count; | |
2895 | } | |
2896 | ||
2897 | ||
ea65370d | 2898 | static struct usb_serial_driver edgeport_1port_device = { |
18fcac35 | 2899 | .driver = { |
269bda1c GKH |
2900 | .owner = THIS_MODULE, |
2901 | .name = "edgeport_ti_1", | |
18fcac35 | 2902 | }, |
269bda1c | 2903 | .description = "Edgeport TI 1 port adapter", |
d9b1b787 | 2904 | .usb_driver = &io_driver, |
1da177e4 | 2905 | .id_table = edgeport_1port_id_table, |
1da177e4 LT |
2906 | .num_ports = 1, |
2907 | .open = edge_open, | |
2908 | .close = edge_close, | |
2909 | .throttle = edge_throttle, | |
2910 | .unthrottle = edge_unthrottle, | |
2911 | .attach = edge_startup, | |
2912 | .shutdown = edge_shutdown, | |
fc4cbd75 | 2913 | .port_probe = edge_create_sysfs_attrs, |
1da177e4 LT |
2914 | .ioctl = edge_ioctl, |
2915 | .set_termios = edge_set_termios, | |
2916 | .tiocmget = edge_tiocmget, | |
2917 | .tiocmset = edge_tiocmset, | |
2918 | .write = edge_write, | |
2919 | .write_room = edge_write_room, | |
2920 | .chars_in_buffer = edge_chars_in_buffer, | |
2921 | .break_ctl = edge_break, | |
2922 | .read_int_callback = edge_interrupt_callback, | |
2923 | .read_bulk_callback = edge_bulk_in_callback, | |
2924 | .write_bulk_callback = edge_bulk_out_callback, | |
2925 | }; | |
2926 | ||
ea65370d | 2927 | static struct usb_serial_driver edgeport_2port_device = { |
18fcac35 | 2928 | .driver = { |
269bda1c GKH |
2929 | .owner = THIS_MODULE, |
2930 | .name = "edgeport_ti_2", | |
18fcac35 | 2931 | }, |
269bda1c | 2932 | .description = "Edgeport TI 2 port adapter", |
d9b1b787 | 2933 | .usb_driver = &io_driver, |
1da177e4 | 2934 | .id_table = edgeport_2port_id_table, |
1da177e4 LT |
2935 | .num_ports = 2, |
2936 | .open = edge_open, | |
2937 | .close = edge_close, | |
2938 | .throttle = edge_throttle, | |
2939 | .unthrottle = edge_unthrottle, | |
2940 | .attach = edge_startup, | |
2941 | .shutdown = edge_shutdown, | |
fc4cbd75 | 2942 | .port_probe = edge_create_sysfs_attrs, |
1da177e4 LT |
2943 | .ioctl = edge_ioctl, |
2944 | .set_termios = edge_set_termios, | |
2945 | .tiocmget = edge_tiocmget, | |
2946 | .tiocmset = edge_tiocmset, | |
2947 | .write = edge_write, | |
2948 | .write_room = edge_write_room, | |
2949 | .chars_in_buffer = edge_chars_in_buffer, | |
2950 | .break_ctl = edge_break, | |
2951 | .read_int_callback = edge_interrupt_callback, | |
2952 | .read_bulk_callback = edge_bulk_in_callback, | |
2953 | .write_bulk_callback = edge_bulk_out_callback, | |
2954 | }; | |
2955 | ||
2956 | ||
2957 | static int __init edgeport_init(void) | |
2958 | { | |
2959 | int retval; | |
2960 | retval = usb_serial_register(&edgeport_1port_device); | |
2961 | if (retval) | |
2962 | goto failed_1port_device_register; | |
2963 | retval = usb_serial_register(&edgeport_2port_device); | |
2964 | if (retval) | |
2965 | goto failed_2port_device_register; | |
2966 | retval = usb_register(&io_driver); | |
2742fd88 | 2967 | if (retval) |
1da177e4 LT |
2968 | goto failed_usb_register; |
2969 | info(DRIVER_DESC " " DRIVER_VERSION); | |
2970 | return 0; | |
2971 | failed_usb_register: | |
2972 | usb_serial_deregister(&edgeport_2port_device); | |
2973 | failed_2port_device_register: | |
2974 | usb_serial_deregister(&edgeport_1port_device); | |
2975 | failed_1port_device_register: | |
2976 | return retval; | |
2977 | } | |
2978 | ||
2742fd88 | 2979 | static void __exit edgeport_exit(void) |
1da177e4 | 2980 | { |
2742fd88 AC |
2981 | usb_deregister(&io_driver); |
2982 | usb_serial_deregister(&edgeport_1port_device); | |
2983 | usb_serial_deregister(&edgeport_2port_device); | |
1da177e4 LT |
2984 | } |
2985 | ||
2986 | module_init(edgeport_init); | |
2987 | module_exit(edgeport_exit); | |
2988 | ||
2989 | /* Module information */ | |
2990 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
2991 | MODULE_DESCRIPTION(DRIVER_DESC); | |
2992 | MODULE_LICENSE("GPL"); | |
d12b219a | 2993 | MODULE_FIRMWARE("edgeport/down3.bin"); |
1da177e4 LT |
2994 | |
2995 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
2996 | MODULE_PARM_DESC(debug, "Debug enabled or not"); | |
2997 | ||
2998 | module_param(low_latency, bool, S_IRUGO | S_IWUSR); | |
2999 | MODULE_PARM_DESC(low_latency, "Low latency enabled or not"); | |
3000 | ||
3001 | module_param(closing_wait, int, S_IRUGO | S_IWUSR); | |
3002 | MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs"); | |
3003 | ||
3004 | module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR); | |
2742fd88 AC |
3005 | MODULE_PARM_DESC(ignore_cpu_rev, |
3006 | "Ignore the cpu revision when connecting to a device"); | |
1da177e4 | 3007 | |
fc4cbd75 MP |
3008 | module_param(default_uart_mode, int, S_IRUGO | S_IWUSR); |
3009 | MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ..."); |