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5fd54ace | 1 | // SPDX-License-Identifier: GPL-2.0+ |
1da177e4 LT |
2 | /* |
3 | * Edgeport USB Serial Converter driver | |
4 | * | |
5 | * Copyright (C) 2000 Inside Out Networks, All rights reserved. | |
6 | * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> | |
7 | * | |
1da177e4 LT |
8 | * Supports the following devices: |
9 | * Edgeport/4 | |
10 | * Edgeport/4t | |
11 | * Edgeport/2 | |
12 | * Edgeport/4i | |
13 | * Edgeport/2i | |
14 | * Edgeport/421 | |
15 | * Edgeport/21 | |
16 | * Rapidport/4 | |
17 | * Edgeport/8 | |
18 | * Edgeport/2D8 | |
19 | * Edgeport/4D8 | |
20 | * Edgeport/8i | |
21 | * | |
22 | * For questions or problems with this driver, contact Inside Out | |
23 | * Networks technical support, or Peter Berger <pberger@brimson.com>, | |
24 | * or Al Borchers <alborchers@steinerpoint.com>. | |
25 | * | |
1da177e4 LT |
26 | */ |
27 | ||
1da177e4 LT |
28 | #include <linux/kernel.h> |
29 | #include <linux/jiffies.h> | |
30 | #include <linux/errno.h> | |
1da177e4 LT |
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> | |
37 | #include <linux/serial.h> | |
38 | #include <linux/ioctl.h> | |
39 | #include <linux/wait.h> | |
5b9ea932 JS |
40 | #include <linux/firmware.h> |
41 | #include <linux/ihex.h> | |
03f0dbf7 | 42 | #include <linux/uaccess.h> |
1da177e4 | 43 | #include <linux/usb.h> |
a969888c | 44 | #include <linux/usb/serial.h> |
1da177e4 LT |
45 | #include "io_edgeport.h" |
46 | #include "io_ionsp.h" /* info for the iosp messages */ | |
47 | #include "io_16654.h" /* 16654 UART defines */ | |
48 | ||
1da177e4 LT |
49 | #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli" |
50 | #define DRIVER_DESC "Edgeport USB Serial Driver" | |
51 | ||
1da177e4 LT |
52 | #define MAX_NAME_LEN 64 |
53 | ||
1da177e4 | 54 | #define OPEN_TIMEOUT (5*HZ) /* 5 seconds */ |
1da177e4 | 55 | |
35d47976 JH |
56 | static const struct usb_device_id edgeport_2port_id_table[] = { |
57 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2) }, | |
58 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2I) }, | |
59 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_421) }, | |
60 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_21) }, | |
61 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2_DIN) }, | |
62 | { } | |
63 | }; | |
64 | ||
65 | static const struct usb_device_id edgeport_4port_id_table[] = { | |
66 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4) }, | |
67 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_RAPIDPORT_4) }, | |
68 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4T) }, | |
69 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_MT4X56USB) }, | |
70 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4I) }, | |
71 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU) }, | |
72 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4_DIN) }, | |
73 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_22I) }, | |
74 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_4) }, | |
75 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_COMPATIBLE) }, | |
76 | { } | |
77 | }; | |
78 | ||
79 | static const struct usb_device_id edgeport_8port_id_table[] = { | |
80 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8) }, | |
81 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU) }, | |
82 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8I) }, | |
83 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8R) }, | |
84 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8RR) }, | |
85 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_8) }, | |
86 | { } | |
87 | }; | |
88 | ||
89 | static const struct usb_device_id Epic_port_id_table[] = { | |
90 | { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0202) }, | |
91 | { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0203) }, | |
92 | { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0310) }, | |
93 | { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0311) }, | |
94 | { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0312) }, | |
95 | { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A758) }, | |
96 | { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A794) }, | |
97 | { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A225) }, | |
98 | { } | |
99 | }; | |
100 | ||
101 | /* Devices that this driver supports */ | |
102 | static const struct usb_device_id id_table_combined[] = { | |
103 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4) }, | |
104 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_RAPIDPORT_4) }, | |
105 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4T) }, | |
106 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_MT4X56USB) }, | |
107 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2) }, | |
108 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4I) }, | |
109 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2I) }, | |
110 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_421) }, | |
111 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_21) }, | |
112 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU) }, | |
113 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8) }, | |
114 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2_DIN) }, | |
115 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4_DIN) }, | |
116 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU) }, | |
117 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_22I) }, | |
118 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_4) }, | |
119 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_COMPATIBLE) }, | |
120 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8I) }, | |
121 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8R) }, | |
122 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8RR) }, | |
123 | { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_8) }, | |
124 | { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0202) }, | |
125 | { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0203) }, | |
126 | { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0310) }, | |
127 | { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0311) }, | |
128 | { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0312) }, | |
129 | { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A758) }, | |
130 | { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A794) }, | |
131 | { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A225) }, | |
132 | { } /* Terminating entry */ | |
133 | }; | |
134 | ||
135 | MODULE_DEVICE_TABLE(usb, id_table_combined); | |
136 | ||
137 | ||
1da177e4 LT |
138 | /* receive port state */ |
139 | enum RXSTATE { | |
03f0dbf7 AC |
140 | EXPECT_HDR1 = 0, /* Expect header byte 1 */ |
141 | EXPECT_HDR2 = 1, /* Expect header byte 2 */ | |
142 | EXPECT_DATA = 2, /* Expect 'RxBytesRemaining' data */ | |
143 | EXPECT_HDR3 = 3, /* Expect header byte 3 (for status hdrs only) */ | |
1da177e4 LT |
144 | }; |
145 | ||
146 | ||
03f0dbf7 AC |
147 | /* Transmit Fifo |
148 | * This Transmit queue is an extension of the edgeport Rx buffer. | |
149 | * The maximum amount of data buffered in both the edgeport | |
1da177e4 LT |
150 | * Rx buffer (maxTxCredits) and this buffer will never exceed maxTxCredits. |
151 | */ | |
152 | struct TxFifo { | |
153 | unsigned int head; /* index to head pointer (write) */ | |
154 | unsigned int tail; /* index to tail pointer (read) */ | |
155 | unsigned int count; /* Bytes in queue */ | |
156 | unsigned int size; /* Max size of queue (equal to Max number of TxCredits) */ | |
157 | unsigned char *fifo; /* allocated Buffer */ | |
158 | }; | |
159 | ||
160 | /* This structure holds all of the local port information */ | |
161 | struct edgeport_port { | |
162 | __u16 txCredits; /* our current credits for this port */ | |
163 | __u16 maxTxCredits; /* the max size of the port */ | |
164 | ||
165 | struct TxFifo txfifo; /* transmit fifo -- size will be maxTxCredits */ | |
166 | struct urb *write_urb; /* write URB for this port */ | |
cb8eaa8b | 167 | bool write_in_progress; /* 'true' while a write URB is outstanding */ |
1da177e4 LT |
168 | spinlock_t ep_lock; |
169 | ||
170 | __u8 shadowLCR; /* last LCR value received */ | |
171 | __u8 shadowMCR; /* last MCR value received */ | |
172 | __u8 shadowMSR; /* last MSR value received */ | |
173 | __u8 shadowLSR; /* last LSR value received */ | |
174 | __u8 shadowXonChar; /* last value set as XON char in Edgeport */ | |
175 | __u8 shadowXoffChar; /* last value set as XOFF char in Edgeport */ | |
176 | __u8 validDataMask; | |
177 | __u32 baudRate; | |
178 | ||
cb8eaa8b RK |
179 | bool open; |
180 | bool openPending; | |
181 | bool commandPending; | |
182 | bool closePending; | |
183 | bool chaseResponsePending; | |
1da177e4 LT |
184 | |
185 | wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */ | |
186 | wait_queue_head_t wait_open; /* for handling sleeping while waiting for open to finish */ | |
187 | wait_queue_head_t wait_command; /* for handling sleeping while waiting for command to finish */ | |
1da177e4 | 188 | |
1da177e4 LT |
189 | struct usb_serial_port *port; /* loop back to the owner of this object */ |
190 | }; | |
191 | ||
192 | ||
193 | /* This structure holds all of the individual device information */ | |
194 | struct edgeport_serial { | |
ad93375a | 195 | char name[MAX_NAME_LEN+2]; /* string name of this device */ |
1da177e4 LT |
196 | |
197 | struct edge_manuf_descriptor manuf_descriptor; /* the manufacturer descriptor */ | |
198 | struct edge_boot_descriptor boot_descriptor; /* the boot firmware descriptor */ | |
199 | struct edgeport_product_info product_info; /* Product Info */ | |
6e8cf775 GKH |
200 | struct edge_compatibility_descriptor epic_descriptor; /* Edgeport compatible descriptor */ |
201 | int is_epic; /* flag if EPiC device or not */ | |
1da177e4 LT |
202 | |
203 | __u8 interrupt_in_endpoint; /* the interrupt endpoint handle */ | |
03f0dbf7 AC |
204 | unsigned char *interrupt_in_buffer; /* the buffer we use for the interrupt endpoint */ |
205 | struct urb *interrupt_read_urb; /* our interrupt urb */ | |
1da177e4 LT |
206 | |
207 | __u8 bulk_in_endpoint; /* the bulk in endpoint handle */ | |
03f0dbf7 AC |
208 | unsigned char *bulk_in_buffer; /* the buffer we use for the bulk in endpoint */ |
209 | struct urb *read_urb; /* our bulk read urb */ | |
cb8eaa8b | 210 | bool read_in_progress; |
1da177e4 LT |
211 | spinlock_t es_lock; |
212 | ||
213 | __u8 bulk_out_endpoint; /* the bulk out endpoint handle */ | |
214 | ||
215 | __s16 rxBytesAvail; /* the number of bytes that we need to read from this device */ | |
216 | ||
217 | enum RXSTATE rxState; /* the current state of the bulk receive processor */ | |
218 | __u8 rxHeader1; /* receive header byte 1 */ | |
219 | __u8 rxHeader2; /* receive header byte 2 */ | |
220 | __u8 rxHeader3; /* receive header byte 3 */ | |
221 | __u8 rxPort; /* the port that we are currently receiving data for */ | |
222 | __u8 rxStatusCode; /* the receive status code */ | |
223 | __u8 rxStatusParam; /* the receive status paramater */ | |
224 | __s16 rxBytesRemaining; /* the number of port bytes left to read */ | |
225 | struct usb_serial *serial; /* loop back to the owner of this object */ | |
226 | }; | |
227 | ||
228 | /* baud rate information */ | |
229 | struct divisor_table_entry { | |
230 | __u32 BaudRate; | |
231 | __u16 Divisor; | |
232 | }; | |
233 | ||
03f0dbf7 AC |
234 | /* |
235 | * Define table of divisors for Rev A EdgePort/4 hardware | |
236 | * These assume a 3.6864MHz crystal, the standard /16, and | |
237 | * MCR.7 = 0. | |
238 | */ | |
239 | ||
4c4c9432 | 240 | static const struct divisor_table_entry divisor_table[] = { |
03f0dbf7 AC |
241 | { 50, 4608}, |
242 | { 75, 3072}, | |
243 | { 110, 2095}, /* 2094.545455 => 230450 => .0217 % over */ | |
244 | { 134, 1713}, /* 1713.011152 => 230398.5 => .00065% under */ | |
1da177e4 LT |
245 | { 150, 1536}, |
246 | { 300, 768}, | |
247 | { 600, 384}, | |
248 | { 1200, 192}, | |
249 | { 1800, 128}, | |
250 | { 2400, 96}, | |
251 | { 4800, 48}, | |
252 | { 7200, 32}, | |
253 | { 9600, 24}, | |
254 | { 14400, 16}, | |
255 | { 19200, 12}, | |
256 | { 38400, 6}, | |
257 | { 57600, 4}, | |
258 | { 115200, 2}, | |
259 | { 230400, 1}, | |
260 | }; | |
261 | ||
36ccce49 GKH |
262 | /* Number of outstanding Command Write Urbs */ |
263 | static atomic_t CmdUrbs = ATOMIC_INIT(0); | |
1da177e4 LT |
264 | |
265 | ||
266 | /* local function prototypes */ | |
267 | ||
268 | /* function prototypes for all URB callbacks */ | |
03f0dbf7 AC |
269 | static void edge_interrupt_callback(struct urb *urb); |
270 | static void edge_bulk_in_callback(struct urb *urb); | |
271 | static void edge_bulk_out_data_callback(struct urb *urb); | |
272 | static void edge_bulk_out_cmd_callback(struct urb *urb); | |
1da177e4 LT |
273 | |
274 | /* function prototypes for the usbserial callbacks */ | |
a509a7e4 | 275 | static int edge_open(struct tty_struct *tty, struct usb_serial_port *port); |
335f8514 | 276 | static void edge_close(struct usb_serial_port *port); |
03f0dbf7 AC |
277 | static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, |
278 | const unsigned char *buf, int count); | |
279 | static int edge_write_room(struct tty_struct *tty); | |
280 | static int edge_chars_in_buffer(struct tty_struct *tty); | |
281 | static void edge_throttle(struct tty_struct *tty); | |
282 | static void edge_unthrottle(struct tty_struct *tty); | |
283 | static void edge_set_termios(struct tty_struct *tty, | |
284 | struct usb_serial_port *port, | |
285 | struct ktermios *old_termios); | |
00a0d0d6 | 286 | static int edge_ioctl(struct tty_struct *tty, |
03f0dbf7 AC |
287 | unsigned int cmd, unsigned long arg); |
288 | static void edge_break(struct tty_struct *tty, int break_state); | |
60b33c13 | 289 | static int edge_tiocmget(struct tty_struct *tty); |
20b9d177 | 290 | static int edge_tiocmset(struct tty_struct *tty, |
03f0dbf7 AC |
291 | unsigned int set, unsigned int clear); |
292 | static int edge_startup(struct usb_serial *serial); | |
f9c99bb8 AS |
293 | static void edge_disconnect(struct usb_serial *serial); |
294 | static void edge_release(struct usb_serial *serial); | |
c27f3efc JH |
295 | static int edge_port_probe(struct usb_serial_port *port); |
296 | static int edge_port_remove(struct usb_serial_port *port); | |
1da177e4 | 297 | |
1da177e4 | 298 | /* function prototypes for all of our local functions */ |
03f0dbf7 AC |
299 | |
300 | static void process_rcvd_data(struct edgeport_serial *edge_serial, | |
301 | unsigned char *buffer, __u16 bufferLength); | |
302 | static void process_rcvd_status(struct edgeport_serial *edge_serial, | |
303 | __u8 byte2, __u8 byte3); | |
2e124b4a JS |
304 | static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, |
305 | int length); | |
03f0dbf7 AC |
306 | static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr); |
307 | static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, | |
308 | __u8 lsr, __u8 data); | |
309 | static int send_iosp_ext_cmd(struct edgeport_port *edge_port, __u8 command, | |
310 | __u8 param); | |
984f6868 | 311 | static int calc_baud_rate_divisor(struct device *dev, int baud_rate, int *divisor); |
03f0dbf7 AC |
312 | static int send_cmd_write_baud_rate(struct edgeport_port *edge_port, |
313 | int baudRate); | |
314 | static void change_port_settings(struct tty_struct *tty, | |
315 | struct edgeport_port *edge_port, | |
316 | struct ktermios *old_termios); | |
317 | static int send_cmd_write_uart_register(struct edgeport_port *edge_port, | |
318 | __u8 regNum, __u8 regValue); | |
319 | static int write_cmd_usb(struct edgeport_port *edge_port, | |
320 | unsigned char *buffer, int writeLength); | |
321 | static void send_more_port_data(struct edgeport_serial *edge_serial, | |
322 | struct edgeport_port *edge_port); | |
323 | ||
324 | static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, | |
325 | __u16 length, const __u8 *data); | |
326 | static int rom_read(struct usb_serial *serial, __u16 extAddr, __u16 addr, | |
327 | __u16 length, __u8 *data); | |
328 | static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, | |
329 | __u16 length, const __u8 *data); | |
330 | static void get_manufacturing_desc(struct edgeport_serial *edge_serial); | |
331 | static void get_boot_desc(struct edgeport_serial *edge_serial); | |
332 | static void load_application_firmware(struct edgeport_serial *edge_serial); | |
333 | ||
334 | static void unicode_to_ascii(char *string, int buflen, | |
335 | __le16 *unicode, int unicode_size); | |
336 | ||
337 | ||
338 | /* ************************************************************************ */ | |
339 | /* ************************************************************************ */ | |
340 | /* ************************************************************************ */ | |
341 | /* ************************************************************************ */ | |
1da177e4 LT |
342 | |
343 | /************************************************************************ | |
344 | * * | |
345 | * update_edgeport_E2PROM() Compare current versions of * | |
346 | * Boot ROM and Manufacture * | |
347 | * Descriptors with versions * | |
348 | * embedded in this driver * | |
349 | * * | |
350 | ************************************************************************/ | |
03f0dbf7 | 351 | static void update_edgeport_E2PROM(struct edgeport_serial *edge_serial) |
1da177e4 | 352 | { |
984f6868 | 353 | struct device *dev = &edge_serial->serial->dev->dev; |
1da177e4 LT |
354 | __u32 BootCurVer; |
355 | __u32 BootNewVer; | |
5b9ea932 JS |
356 | __u8 BootMajorVersion; |
357 | __u8 BootMinorVersion; | |
358 | __u16 BootBuildNumber; | |
359 | __u32 Bootaddr; | |
360 | const struct ihex_binrec *rec; | |
361 | const struct firmware *fw; | |
362 | const char *fw_name; | |
1da177e4 LT |
363 | int response; |
364 | ||
1da177e4 | 365 | switch (edge_serial->product_info.iDownloadFile) { |
03f0dbf7 AC |
366 | case EDGE_DOWNLOAD_FILE_I930: |
367 | fw_name = "edgeport/boot.fw"; | |
368 | break; | |
369 | case EDGE_DOWNLOAD_FILE_80251: | |
370 | fw_name = "edgeport/boot2.fw"; | |
371 | break; | |
372 | default: | |
373 | return; | |
1da177e4 LT |
374 | } |
375 | ||
5b9ea932 JS |
376 | response = request_ihex_firmware(&fw, fw_name, |
377 | &edge_serial->serial->dev->dev); | |
378 | if (response) { | |
984f6868 | 379 | dev_err(dev, "Failed to load image \"%s\" err %d\n", |
5b9ea932 JS |
380 | fw_name, response); |
381 | return; | |
382 | } | |
383 | ||
384 | rec = (const struct ihex_binrec *)fw->data; | |
385 | BootMajorVersion = rec->data[0]; | |
386 | BootMinorVersion = rec->data[1]; | |
387 | BootBuildNumber = (rec->data[2] << 8) | rec->data[3]; | |
388 | ||
03f0dbf7 | 389 | /* Check Boot Image Version */ |
1da177e4 LT |
390 | BootCurVer = (edge_serial->boot_descriptor.MajorVersion << 24) + |
391 | (edge_serial->boot_descriptor.MinorVersion << 16) + | |
392 | le16_to_cpu(edge_serial->boot_descriptor.BuildNumber); | |
393 | ||
394 | BootNewVer = (BootMajorVersion << 24) + | |
395 | (BootMinorVersion << 16) + | |
5b9ea932 | 396 | BootBuildNumber; |
1da177e4 | 397 | |
984f6868 | 398 | dev_dbg(dev, "Current Boot Image version %d.%d.%d\n", |
1da177e4 LT |
399 | edge_serial->boot_descriptor.MajorVersion, |
400 | edge_serial->boot_descriptor.MinorVersion, | |
401 | le16_to_cpu(edge_serial->boot_descriptor.BuildNumber)); | |
402 | ||
403 | ||
404 | if (BootNewVer > BootCurVer) { | |
984f6868 | 405 | dev_dbg(dev, "**Update Boot Image from %d.%d.%d to %d.%d.%d\n", |
1da177e4 LT |
406 | edge_serial->boot_descriptor.MajorVersion, |
407 | edge_serial->boot_descriptor.MinorVersion, | |
408 | le16_to_cpu(edge_serial->boot_descriptor.BuildNumber), | |
5b9ea932 | 409 | BootMajorVersion, BootMinorVersion, BootBuildNumber); |
1da177e4 | 410 | |
984f6868 | 411 | dev_dbg(dev, "Downloading new Boot Image\n"); |
1da177e4 | 412 | |
5b9ea932 JS |
413 | for (rec = ihex_next_binrec(rec); rec; |
414 | rec = ihex_next_binrec(rec)) { | |
415 | Bootaddr = be32_to_cpu(rec->addr); | |
416 | response = rom_write(edge_serial->serial, | |
417 | Bootaddr >> 16, | |
418 | Bootaddr & 0xFFFF, | |
419 | be16_to_cpu(rec->len), | |
420 | &rec->data[0]); | |
1da177e4 | 421 | if (response < 0) { |
5b9ea932 JS |
422 | dev_err(&edge_serial->serial->dev->dev, |
423 | "rom_write failed (%x, %x, %d)\n", | |
424 | Bootaddr >> 16, Bootaddr & 0xFFFF, | |
425 | be16_to_cpu(rec->len)); | |
1da177e4 LT |
426 | break; |
427 | } | |
428 | } | |
429 | } else { | |
984f6868 | 430 | dev_dbg(dev, "Boot Image -- already up to date\n"); |
1da177e4 | 431 | } |
5b9ea932 | 432 | release_firmware(fw); |
1da177e4 LT |
433 | } |
434 | ||
1da177e4 LT |
435 | #if 0 |
436 | /************************************************************************ | |
437 | * | |
438 | * Get string descriptor from device | |
439 | * | |
440 | ************************************************************************/ | |
03f0dbf7 AC |
441 | static int get_string_desc(struct usb_device *dev, int Id, |
442 | struct usb_string_descriptor **pRetDesc) | |
1da177e4 LT |
443 | { |
444 | struct usb_string_descriptor StringDesc; | |
445 | struct usb_string_descriptor *pStringDesc; | |
446 | ||
984f6868 | 447 | dev_dbg(&dev->dev, "%s - USB String ID = %d\n", __func__, Id); |
1da177e4 | 448 | |
03f0dbf7 AC |
449 | if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc, |
450 | sizeof(StringDesc))) | |
1da177e4 | 451 | return 0; |
1da177e4 | 452 | |
03f0dbf7 AC |
453 | pStringDesc = kmalloc(StringDesc.bLength, GFP_KERNEL); |
454 | if (!pStringDesc) | |
1da177e4 | 455 | return -1; |
1da177e4 | 456 | |
03f0dbf7 AC |
457 | if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc, |
458 | StringDesc.bLength)) { | |
1da177e4 LT |
459 | kfree(pStringDesc); |
460 | return -1; | |
461 | } | |
462 | ||
463 | *pRetDesc = pStringDesc; | |
464 | return 0; | |
465 | } | |
466 | #endif | |
467 | ||
984f6868 GKH |
468 | static void dump_product_info(struct edgeport_serial *edge_serial, |
469 | struct edgeport_product_info *product_info) | |
6e8cf775 | 470 | { |
984f6868 GKH |
471 | struct device *dev = &edge_serial->serial->dev->dev; |
472 | ||
03f0dbf7 | 473 | /* Dump Product Info structure */ |
984f6868 GKH |
474 | dev_dbg(dev, "**Product Information:\n"); |
475 | dev_dbg(dev, " ProductId %x\n", product_info->ProductId); | |
476 | dev_dbg(dev, " NumPorts %d\n", product_info->NumPorts); | |
477 | dev_dbg(dev, " ProdInfoVer %d\n", product_info->ProdInfoVer); | |
478 | dev_dbg(dev, " IsServer %d\n", product_info->IsServer); | |
479 | dev_dbg(dev, " IsRS232 %d\n", product_info->IsRS232); | |
480 | dev_dbg(dev, " IsRS422 %d\n", product_info->IsRS422); | |
481 | dev_dbg(dev, " IsRS485 %d\n", product_info->IsRS485); | |
482 | dev_dbg(dev, " RomSize %d\n", product_info->RomSize); | |
483 | dev_dbg(dev, " RamSize %d\n", product_info->RamSize); | |
484 | dev_dbg(dev, " CpuRev %x\n", product_info->CpuRev); | |
485 | dev_dbg(dev, " BoardRev %x\n", product_info->BoardRev); | |
486 | dev_dbg(dev, " BootMajorVersion %d.%d.%d\n", | |
487 | product_info->BootMajorVersion, | |
488 | product_info->BootMinorVersion, | |
489 | le16_to_cpu(product_info->BootBuildNumber)); | |
490 | dev_dbg(dev, " FirmwareMajorVersion %d.%d.%d\n", | |
491 | product_info->FirmwareMajorVersion, | |
492 | product_info->FirmwareMinorVersion, | |
493 | le16_to_cpu(product_info->FirmwareBuildNumber)); | |
494 | dev_dbg(dev, " ManufactureDescDate %d/%d/%d\n", | |
495 | product_info->ManufactureDescDate[0], | |
496 | product_info->ManufactureDescDate[1], | |
497 | product_info->ManufactureDescDate[2]+1900); | |
498 | dev_dbg(dev, " iDownloadFile 0x%x\n", | |
499 | product_info->iDownloadFile); | |
500 | dev_dbg(dev, " EpicVer %d\n", product_info->EpicVer); | |
6e8cf775 GKH |
501 | } |
502 | ||
1da177e4 LT |
503 | static void get_product_info(struct edgeport_serial *edge_serial) |
504 | { | |
505 | struct edgeport_product_info *product_info = &edge_serial->product_info; | |
506 | ||
03f0dbf7 AC |
507 | memset(product_info, 0, sizeof(struct edgeport_product_info)); |
508 | ||
509 | product_info->ProductId = (__u16)(le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) & ~ION_DEVICE_ID_80251_NETCHIP); | |
510 | product_info->NumPorts = edge_serial->manuf_descriptor.NumPorts; | |
511 | product_info->ProdInfoVer = 0; | |
512 | ||
513 | product_info->RomSize = edge_serial->manuf_descriptor.RomSize; | |
514 | product_info->RamSize = edge_serial->manuf_descriptor.RamSize; | |
515 | product_info->CpuRev = edge_serial->manuf_descriptor.CpuRev; | |
516 | product_info->BoardRev = edge_serial->manuf_descriptor.BoardRev; | |
517 | ||
518 | product_info->BootMajorVersion = | |
519 | edge_serial->boot_descriptor.MajorVersion; | |
520 | product_info->BootMinorVersion = | |
521 | edge_serial->boot_descriptor.MinorVersion; | |
522 | product_info->BootBuildNumber = | |
523 | edge_serial->boot_descriptor.BuildNumber; | |
524 | ||
525 | memcpy(product_info->ManufactureDescDate, | |
526 | edge_serial->manuf_descriptor.DescDate, | |
527 | sizeof(edge_serial->manuf_descriptor.DescDate)); | |
528 | ||
529 | /* check if this is 2nd generation hardware */ | |
530 | if (le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) | |
531 | & ION_DEVICE_ID_80251_NETCHIP) | |
532 | product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_80251; | |
533 | else | |
534 | product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_I930; | |
984f6868 | 535 | |
03f0dbf7 | 536 | /* Determine Product type and set appropriate flags */ |
1da177e4 | 537 | switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info->ProductId)) { |
03f0dbf7 AC |
538 | case ION_DEVICE_ID_EDGEPORT_COMPATIBLE: |
539 | case ION_DEVICE_ID_EDGEPORT_4T: | |
540 | case ION_DEVICE_ID_EDGEPORT_4: | |
541 | case ION_DEVICE_ID_EDGEPORT_2: | |
542 | case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU: | |
543 | case ION_DEVICE_ID_EDGEPORT_8: | |
544 | case ION_DEVICE_ID_EDGEPORT_421: | |
545 | case ION_DEVICE_ID_EDGEPORT_21: | |
546 | case ION_DEVICE_ID_EDGEPORT_2_DIN: | |
547 | case ION_DEVICE_ID_EDGEPORT_4_DIN: | |
548 | case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU: | |
549 | product_info->IsRS232 = 1; | |
550 | break; | |
1da177e4 | 551 | |
03f0dbf7 AC |
552 | case ION_DEVICE_ID_EDGEPORT_2I: /* Edgeport/2 RS422/RS485 */ |
553 | product_info->IsRS422 = 1; | |
554 | product_info->IsRS485 = 1; | |
555 | break; | |
1da177e4 | 556 | |
03f0dbf7 AC |
557 | case ION_DEVICE_ID_EDGEPORT_8I: /* Edgeport/4 RS422 */ |
558 | case ION_DEVICE_ID_EDGEPORT_4I: /* Edgeport/4 RS422 */ | |
559 | product_info->IsRS422 = 1; | |
560 | break; | |
1da177e4 LT |
561 | } |
562 | ||
984f6868 | 563 | dump_product_info(edge_serial, product_info); |
6e8cf775 | 564 | } |
1da177e4 | 565 | |
6e8cf775 GKH |
566 | static int get_epic_descriptor(struct edgeport_serial *ep) |
567 | { | |
568 | int result; | |
569 | struct usb_serial *serial = ep->serial; | |
570 | struct edgeport_product_info *product_info = &ep->product_info; | |
e4457d97 | 571 | struct edge_compatibility_descriptor *epic; |
6e8cf775 | 572 | struct edge_compatibility_bits *bits; |
984f6868 | 573 | struct device *dev = &serial->dev->dev; |
6e8cf775 GKH |
574 | |
575 | ep->is_epic = 0; | |
e4457d97 JH |
576 | |
577 | epic = kmalloc(sizeof(*epic), GFP_KERNEL); | |
578 | if (!epic) | |
579 | return -ENOMEM; | |
580 | ||
6e8cf775 GKH |
581 | result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
582 | USB_REQUEST_ION_GET_EPIC_DESC, | |
583 | 0xC0, 0x00, 0x00, | |
e4457d97 | 584 | epic, sizeof(*epic), |
6e8cf775 | 585 | 300); |
e4457d97 | 586 | if (result == sizeof(*epic)) { |
6e8cf775 | 587 | ep->is_epic = 1; |
e4457d97 | 588 | memcpy(&ep->epic_descriptor, epic, sizeof(*epic)); |
6e8cf775 GKH |
589 | memset(product_info, 0, sizeof(struct edgeport_product_info)); |
590 | ||
03f0dbf7 AC |
591 | product_info->NumPorts = epic->NumPorts; |
592 | product_info->ProdInfoVer = 0; | |
593 | product_info->FirmwareMajorVersion = epic->MajorVersion; | |
594 | product_info->FirmwareMinorVersion = epic->MinorVersion; | |
595 | product_info->FirmwareBuildNumber = epic->BuildNumber; | |
596 | product_info->iDownloadFile = epic->iDownloadFile; | |
597 | product_info->EpicVer = epic->EpicVer; | |
598 | product_info->Epic = epic->Supports; | |
599 | product_info->ProductId = ION_DEVICE_ID_EDGEPORT_COMPATIBLE; | |
984f6868 | 600 | dump_product_info(ep, product_info); |
6e8cf775 GKH |
601 | |
602 | bits = &ep->epic_descriptor.Supports; | |
984f6868 GKH |
603 | dev_dbg(dev, "**EPIC descriptor:\n"); |
604 | dev_dbg(dev, " VendEnableSuspend: %s\n", bits->VendEnableSuspend ? "TRUE": "FALSE"); | |
605 | dev_dbg(dev, " IOSPOpen : %s\n", bits->IOSPOpen ? "TRUE": "FALSE"); | |
606 | dev_dbg(dev, " IOSPClose : %s\n", bits->IOSPClose ? "TRUE": "FALSE"); | |
607 | dev_dbg(dev, " IOSPChase : %s\n", bits->IOSPChase ? "TRUE": "FALSE"); | |
608 | dev_dbg(dev, " IOSPSetRxFlow : %s\n", bits->IOSPSetRxFlow ? "TRUE": "FALSE"); | |
609 | dev_dbg(dev, " IOSPSetTxFlow : %s\n", bits->IOSPSetTxFlow ? "TRUE": "FALSE"); | |
610 | dev_dbg(dev, " IOSPSetXChar : %s\n", bits->IOSPSetXChar ? "TRUE": "FALSE"); | |
611 | dev_dbg(dev, " IOSPRxCheck : %s\n", bits->IOSPRxCheck ? "TRUE": "FALSE"); | |
612 | dev_dbg(dev, " IOSPSetClrBreak : %s\n", bits->IOSPSetClrBreak ? "TRUE": "FALSE"); | |
613 | dev_dbg(dev, " IOSPWriteMCR : %s\n", bits->IOSPWriteMCR ? "TRUE": "FALSE"); | |
614 | dev_dbg(dev, " IOSPWriteLCR : %s\n", bits->IOSPWriteLCR ? "TRUE": "FALSE"); | |
615 | dev_dbg(dev, " IOSPSetBaudRate : %s\n", bits->IOSPSetBaudRate ? "TRUE": "FALSE"); | |
616 | dev_dbg(dev, " TrueEdgeport : %s\n", bits->TrueEdgeport ? "TRUE": "FALSE"); | |
e4457d97 JH |
617 | |
618 | result = 0; | |
619 | } else if (result >= 0) { | |
620 | dev_warn(&serial->interface->dev, "short epic descriptor received: %d\n", | |
621 | result); | |
622 | result = -EIO; | |
6e8cf775 GKH |
623 | } |
624 | ||
e4457d97 JH |
625 | kfree(epic); |
626 | ||
6e8cf775 | 627 | return result; |
1da177e4 LT |
628 | } |
629 | ||
630 | ||
631 | /************************************************************************/ | |
632 | /************************************************************************/ | |
633 | /* U S B C A L L B A C K F U N C T I O N S */ | |
634 | /* U S B C A L L B A C K F U N C T I O N S */ | |
635 | /************************************************************************/ | |
636 | /************************************************************************/ | |
637 | ||
638 | /***************************************************************************** | |
639 | * edge_interrupt_callback | |
03f0dbf7 | 640 | * this is the callback function for when we have received data on the |
1da177e4 LT |
641 | * interrupt endpoint. |
642 | *****************************************************************************/ | |
03f0dbf7 | 643 | static void edge_interrupt_callback(struct urb *urb) |
1da177e4 | 644 | { |
984f6868 GKH |
645 | struct edgeport_serial *edge_serial = urb->context; |
646 | struct device *dev; | |
1da177e4 LT |
647 | struct edgeport_port *edge_port; |
648 | struct usb_serial_port *port; | |
649 | unsigned char *data = urb->transfer_buffer; | |
650 | int length = urb->actual_length; | |
651 | int bytes_avail; | |
652 | int position; | |
653 | int txCredits; | |
654 | int portNumber; | |
655 | int result; | |
2a393f5f | 656 | int status = urb->status; |
1da177e4 | 657 | |
2a393f5f | 658 | switch (status) { |
1da177e4 LT |
659 | case 0: |
660 | /* success */ | |
661 | break; | |
662 | case -ECONNRESET: | |
663 | case -ENOENT: | |
664 | case -ESHUTDOWN: | |
665 | /* this urb is terminated, clean up */ | |
984f6868 | 666 | dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status); |
1da177e4 LT |
667 | return; |
668 | default: | |
984f6868 | 669 | dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d\n", __func__, status); |
1da177e4 LT |
670 | goto exit; |
671 | } | |
672 | ||
984f6868 GKH |
673 | dev = &edge_serial->serial->dev->dev; |
674 | ||
03f0dbf7 | 675 | /* process this interrupt-read even if there are no ports open */ |
1da177e4 | 676 | if (length) { |
59d33f2f | 677 | usb_serial_debug_data(dev, __func__, length, data); |
1da177e4 LT |
678 | |
679 | if (length > 1) { | |
680 | bytes_avail = data[0] | (data[1] << 8); | |
681 | if (bytes_avail) { | |
682 | spin_lock(&edge_serial->es_lock); | |
683 | edge_serial->rxBytesAvail += bytes_avail; | |
984f6868 GKH |
684 | dev_dbg(dev, |
685 | "%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d\n", | |
686 | __func__, bytes_avail, | |
687 | edge_serial->rxBytesAvail, | |
688 | edge_serial->read_in_progress); | |
1da177e4 LT |
689 | |
690 | if (edge_serial->rxBytesAvail > 0 && | |
691 | !edge_serial->read_in_progress) { | |
984f6868 | 692 | dev_dbg(dev, "%s - posting a read\n", __func__); |
cb8eaa8b | 693 | edge_serial->read_in_progress = true; |
1da177e4 | 694 | |
03f0dbf7 AC |
695 | /* we have pending bytes on the |
696 | bulk in pipe, send a request */ | |
1da177e4 LT |
697 | result = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC); |
698 | if (result) { | |
984f6868 GKH |
699 | dev_err(dev, |
700 | "%s - usb_submit_urb(read bulk) failed with result = %d\n", | |
701 | __func__, result); | |
cb8eaa8b | 702 | edge_serial->read_in_progress = false; |
1da177e4 LT |
703 | } |
704 | } | |
705 | spin_unlock(&edge_serial->es_lock); | |
706 | } | |
707 | } | |
708 | /* grab the txcredits for the ports if available */ | |
709 | position = 2; | |
710 | portNumber = 0; | |
03f0dbf7 AC |
711 | while ((position < length) && |
712 | (portNumber < edge_serial->serial->num_ports)) { | |
1da177e4 LT |
713 | txCredits = data[position] | (data[position+1] << 8); |
714 | if (txCredits) { | |
715 | port = edge_serial->serial->port[portNumber]; | |
716 | edge_port = usb_get_serial_port_data(port); | |
717 | if (edge_port->open) { | |
718 | spin_lock(&edge_port->ep_lock); | |
719 | edge_port->txCredits += txCredits; | |
720 | spin_unlock(&edge_port->ep_lock); | |
984f6868 GKH |
721 | dev_dbg(dev, "%s - txcredits for port%d = %d\n", |
722 | __func__, portNumber, | |
723 | edge_port->txCredits); | |
1da177e4 | 724 | |
03f0dbf7 AC |
725 | /* tell the tty driver that something |
726 | has changed */ | |
6aad04f2 | 727 | tty_port_tty_wakeup(&edge_port->port->port); |
03f0dbf7 AC |
728 | /* Since we have more credit, check |
729 | if more data can be sent */ | |
730 | send_more_port_data(edge_serial, | |
731 | edge_port); | |
1da177e4 LT |
732 | } |
733 | } | |
734 | position += 2; | |
735 | ++portNumber; | |
736 | } | |
737 | } | |
738 | ||
739 | exit: | |
03f0dbf7 AC |
740 | result = usb_submit_urb(urb, GFP_ATOMIC); |
741 | if (result) | |
742 | dev_err(&urb->dev->dev, | |
743 | "%s - Error %d submitting control urb\n", | |
744 | __func__, result); | |
1da177e4 LT |
745 | } |
746 | ||
747 | ||
748 | /***************************************************************************** | |
749 | * edge_bulk_in_callback | |
03f0dbf7 | 750 | * this is the callback function for when we have received data on the |
1da177e4 LT |
751 | * bulk in endpoint. |
752 | *****************************************************************************/ | |
03f0dbf7 | 753 | static void edge_bulk_in_callback(struct urb *urb) |
1da177e4 | 754 | { |
cdc97792 | 755 | struct edgeport_serial *edge_serial = urb->context; |
984f6868 | 756 | struct device *dev; |
1da177e4 | 757 | unsigned char *data = urb->transfer_buffer; |
2a393f5f | 758 | int retval; |
1da177e4 | 759 | __u16 raw_data_length; |
2a393f5f | 760 | int status = urb->status; |
1da177e4 | 761 | |
2a393f5f | 762 | if (status) { |
984f6868 GKH |
763 | dev_dbg(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", |
764 | __func__, status); | |
cb8eaa8b | 765 | edge_serial->read_in_progress = false; |
1da177e4 LT |
766 | return; |
767 | } | |
768 | ||
769 | if (urb->actual_length == 0) { | |
984f6868 | 770 | dev_dbg(&urb->dev->dev, "%s - read bulk callback with no data\n", __func__); |
cb8eaa8b | 771 | edge_serial->read_in_progress = false; |
1da177e4 LT |
772 | return; |
773 | } | |
774 | ||
984f6868 | 775 | dev = &edge_serial->serial->dev->dev; |
1da177e4 LT |
776 | raw_data_length = urb->actual_length; |
777 | ||
59d33f2f | 778 | usb_serial_debug_data(dev, __func__, raw_data_length, data); |
1da177e4 LT |
779 | |
780 | spin_lock(&edge_serial->es_lock); | |
781 | ||
782 | /* decrement our rxBytes available by the number that we just got */ | |
783 | edge_serial->rxBytesAvail -= raw_data_length; | |
784 | ||
984f6868 GKH |
785 | dev_dbg(dev, "%s - Received = %d, rxBytesAvail %d\n", __func__, |
786 | raw_data_length, edge_serial->rxBytesAvail); | |
1da177e4 | 787 | |
03f0dbf7 | 788 | process_rcvd_data(edge_serial, data, urb->actual_length); |
1da177e4 LT |
789 | |
790 | /* check to see if there's any more data for us to read */ | |
791 | if (edge_serial->rxBytesAvail > 0) { | |
984f6868 | 792 | dev_dbg(dev, "%s - posting a read\n", __func__); |
2a393f5f GKH |
793 | retval = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC); |
794 | if (retval) { | |
984f6868 GKH |
795 | dev_err(dev, |
796 | "%s - usb_submit_urb(read bulk) failed, retval = %d\n", | |
797 | __func__, retval); | |
cb8eaa8b | 798 | edge_serial->read_in_progress = false; |
1da177e4 LT |
799 | } |
800 | } else { | |
cb8eaa8b | 801 | edge_serial->read_in_progress = false; |
1da177e4 LT |
802 | } |
803 | ||
804 | spin_unlock(&edge_serial->es_lock); | |
805 | } | |
806 | ||
807 | ||
808 | /***************************************************************************** | |
809 | * edge_bulk_out_data_callback | |
03f0dbf7 AC |
810 | * this is the callback function for when we have finished sending |
811 | * serial data on the bulk out endpoint. | |
1da177e4 | 812 | *****************************************************************************/ |
03f0dbf7 | 813 | static void edge_bulk_out_data_callback(struct urb *urb) |
1da177e4 | 814 | { |
cdc97792 | 815 | struct edgeport_port *edge_port = urb->context; |
2a393f5f | 816 | int status = urb->status; |
1da177e4 | 817 | |
2a393f5f | 818 | if (status) { |
984f6868 GKH |
819 | dev_dbg(&urb->dev->dev, |
820 | "%s - nonzero write bulk status received: %d\n", | |
821 | __func__, status); | |
1da177e4 LT |
822 | } |
823 | ||
6aad04f2 JS |
824 | if (edge_port->open) |
825 | tty_port_tty_wakeup(&edge_port->port->port); | |
1da177e4 | 826 | |
03f0dbf7 | 827 | /* Release the Write URB */ |
cb8eaa8b | 828 | edge_port->write_in_progress = false; |
1da177e4 | 829 | |
03f0dbf7 AC |
830 | /* Check if more data needs to be sent */ |
831 | send_more_port_data((struct edgeport_serial *) | |
832 | (usb_get_serial_data(edge_port->port->serial)), edge_port); | |
1da177e4 LT |
833 | } |
834 | ||
835 | ||
836 | /***************************************************************************** | |
837 | * BulkOutCmdCallback | |
03f0dbf7 AC |
838 | * this is the callback function for when we have finished sending a |
839 | * command on the bulk out endpoint. | |
1da177e4 | 840 | *****************************************************************************/ |
03f0dbf7 | 841 | static void edge_bulk_out_cmd_callback(struct urb *urb) |
1da177e4 | 842 | { |
cdc97792 | 843 | struct edgeport_port *edge_port = urb->context; |
1da177e4 LT |
844 | int status = urb->status; |
845 | ||
96c706ed | 846 | atomic_dec(&CmdUrbs); |
984f6868 GKH |
847 | dev_dbg(&urb->dev->dev, "%s - FREE URB %p (outstanding %d)\n", |
848 | __func__, urb, atomic_read(&CmdUrbs)); | |
1da177e4 LT |
849 | |
850 | ||
851 | /* clean up the transfer buffer */ | |
1bc3c9e1 | 852 | kfree(urb->transfer_buffer); |
1da177e4 LT |
853 | |
854 | /* Free the command urb */ | |
03f0dbf7 | 855 | usb_free_urb(urb); |
1da177e4 LT |
856 | |
857 | if (status) { | |
984f6868 GKH |
858 | dev_dbg(&urb->dev->dev, |
859 | "%s - nonzero write bulk status received: %d\n", | |
860 | __func__, status); | |
1da177e4 LT |
861 | return; |
862 | } | |
863 | ||
1da177e4 | 864 | /* tell the tty driver that something has changed */ |
6aad04f2 JS |
865 | if (edge_port->open) |
866 | tty_port_tty_wakeup(&edge_port->port->port); | |
1da177e4 LT |
867 | |
868 | /* we have completed the command */ | |
cb8eaa8b | 869 | edge_port->commandPending = false; |
1da177e4 LT |
870 | wake_up(&edge_port->wait_command); |
871 | } | |
872 | ||
873 | ||
874 | /***************************************************************************** | |
875 | * Driver tty interface functions | |
876 | *****************************************************************************/ | |
877 | ||
878 | /***************************************************************************** | |
879 | * SerialOpen | |
880 | * this function is called by the tty driver when a port is opened | |
881 | * If successful, we return 0 | |
882 | * Otherwise we return a negative error number. | |
883 | *****************************************************************************/ | |
a509a7e4 | 884 | static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) |
1da177e4 LT |
885 | { |
886 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
984f6868 | 887 | struct device *dev = &port->dev; |
1da177e4 LT |
888 | struct usb_serial *serial; |
889 | struct edgeport_serial *edge_serial; | |
890 | int response; | |
891 | ||
1da177e4 LT |
892 | if (edge_port == NULL) |
893 | return -ENODEV; | |
894 | ||
03f0dbf7 AC |
895 | /* see if we've set up our endpoint info yet (can't set it up |
896 | in edge_startup as the structures were not set up at that time.) */ | |
1da177e4 LT |
897 | serial = port->serial; |
898 | edge_serial = usb_get_serial_data(serial); | |
95da310e | 899 | if (edge_serial == NULL) |
1da177e4 | 900 | return -ENODEV; |
1da177e4 LT |
901 | if (edge_serial->interrupt_in_buffer == NULL) { |
902 | struct usb_serial_port *port0 = serial->port[0]; | |
03f0dbf7 | 903 | |
1da177e4 | 904 | /* not set up yet, so do it now */ |
03f0dbf7 AC |
905 | edge_serial->interrupt_in_buffer = |
906 | port0->interrupt_in_buffer; | |
907 | edge_serial->interrupt_in_endpoint = | |
908 | port0->interrupt_in_endpointAddress; | |
1da177e4 LT |
909 | edge_serial->interrupt_read_urb = port0->interrupt_in_urb; |
910 | edge_serial->bulk_in_buffer = port0->bulk_in_buffer; | |
03f0dbf7 AC |
911 | edge_serial->bulk_in_endpoint = |
912 | port0->bulk_in_endpointAddress; | |
1da177e4 | 913 | edge_serial->read_urb = port0->read_urb; |
03f0dbf7 AC |
914 | edge_serial->bulk_out_endpoint = |
915 | port0->bulk_out_endpointAddress; | |
916 | ||
1da177e4 LT |
917 | /* set up our interrupt urb */ |
918 | usb_fill_int_urb(edge_serial->interrupt_read_urb, | |
03f0dbf7 AC |
919 | serial->dev, |
920 | usb_rcvintpipe(serial->dev, | |
921 | port0->interrupt_in_endpointAddress), | |
922 | port0->interrupt_in_buffer, | |
923 | edge_serial->interrupt_read_urb->transfer_buffer_length, | |
924 | edge_interrupt_callback, edge_serial, | |
925 | edge_serial->interrupt_read_urb->interval); | |
926 | ||
1da177e4 LT |
927 | /* set up our bulk in urb */ |
928 | usb_fill_bulk_urb(edge_serial->read_urb, serial->dev, | |
03f0dbf7 AC |
929 | usb_rcvbulkpipe(serial->dev, |
930 | port0->bulk_in_endpointAddress), | |
931 | port0->bulk_in_buffer, | |
932 | edge_serial->read_urb->transfer_buffer_length, | |
933 | edge_bulk_in_callback, edge_serial); | |
cb8eaa8b | 934 | edge_serial->read_in_progress = false; |
1da177e4 LT |
935 | |
936 | /* start interrupt read for this edgeport | |
03f0dbf7 AC |
937 | * this interrupt will continue as long |
938 | * as the edgeport is connected */ | |
939 | response = usb_submit_urb(edge_serial->interrupt_read_urb, | |
940 | GFP_KERNEL); | |
1da177e4 | 941 | if (response) { |
984f6868 GKH |
942 | dev_err(dev, "%s - Error %d submitting control urb\n", |
943 | __func__, response); | |
1da177e4 LT |
944 | } |
945 | } | |
03f0dbf7 | 946 | |
1da177e4 LT |
947 | /* initialize our wait queues */ |
948 | init_waitqueue_head(&edge_port->wait_open); | |
949 | init_waitqueue_head(&edge_port->wait_chase); | |
1da177e4 LT |
950 | init_waitqueue_head(&edge_port->wait_command); |
951 | ||
1da177e4 | 952 | /* initialize our port settings */ |
03f0dbf7 AC |
953 | edge_port->txCredits = 0; /* Can't send any data yet */ |
954 | /* Must always set this bit to enable ints! */ | |
955 | edge_port->shadowMCR = MCR_MASTER_IE; | |
cb8eaa8b | 956 | edge_port->chaseResponsePending = false; |
1da177e4 LT |
957 | |
958 | /* send a open port command */ | |
cb8eaa8b RK |
959 | edge_port->openPending = true; |
960 | edge_port->open = false; | |
03f0dbf7 | 961 | response = send_iosp_ext_cmd(edge_port, IOSP_CMD_OPEN_PORT, 0); |
1da177e4 LT |
962 | |
963 | if (response < 0) { | |
984f6868 | 964 | dev_err(dev, "%s - error sending open port command\n", __func__); |
cb8eaa8b | 965 | edge_port->openPending = false; |
1da177e4 LT |
966 | return -ENODEV; |
967 | } | |
968 | ||
969 | /* now wait for the port to be completely opened */ | |
03f0dbf7 AC |
970 | wait_event_timeout(edge_port->wait_open, !edge_port->openPending, |
971 | OPEN_TIMEOUT); | |
1da177e4 | 972 | |
cb8eaa8b | 973 | if (!edge_port->open) { |
1da177e4 | 974 | /* open timed out */ |
984f6868 | 975 | dev_dbg(dev, "%s - open timedout\n", __func__); |
cb8eaa8b | 976 | edge_port->openPending = false; |
1da177e4 LT |
977 | return -ENODEV; |
978 | } | |
979 | ||
980 | /* create the txfifo */ | |
981 | edge_port->txfifo.head = 0; | |
982 | edge_port->txfifo.tail = 0; | |
983 | edge_port->txfifo.count = 0; | |
984 | edge_port->txfifo.size = edge_port->maxTxCredits; | |
03f0dbf7 | 985 | edge_port->txfifo.fifo = kmalloc(edge_port->maxTxCredits, GFP_KERNEL); |
1da177e4 LT |
986 | |
987 | if (!edge_port->txfifo.fifo) { | |
335f8514 | 988 | edge_close(port); |
1da177e4 LT |
989 | return -ENOMEM; |
990 | } | |
991 | ||
992 | /* Allocate a URB for the write */ | |
03f0dbf7 | 993 | edge_port->write_urb = usb_alloc_urb(0, GFP_KERNEL); |
cb8eaa8b | 994 | edge_port->write_in_progress = false; |
1da177e4 LT |
995 | |
996 | if (!edge_port->write_urb) { | |
335f8514 | 997 | edge_close(port); |
1da177e4 LT |
998 | return -ENOMEM; |
999 | } | |
1000 | ||
1143832e GKH |
1001 | dev_dbg(dev, "%s - Initialize TX fifo to %d bytes\n", |
1002 | __func__, edge_port->maxTxCredits); | |
1da177e4 LT |
1003 | |
1004 | return 0; | |
1005 | } | |
1006 | ||
1007 | ||
1008 | /************************************************************************ | |
1009 | * | |
1010 | * block_until_chase_response | |
1011 | * | |
1012 | * This function will block the close until one of the following: | |
1013 | * 1. Response to our Chase comes from Edgeport | |
dc0d5c1e | 1014 | * 2. A timeout of 10 seconds without activity has expired |
1da177e4 LT |
1015 | * (1K of Edgeport data @ 2400 baud ==> 4 sec to empty) |
1016 | * | |
1017 | ************************************************************************/ | |
1018 | static void block_until_chase_response(struct edgeport_port *edge_port) | |
1019 | { | |
984f6868 | 1020 | struct device *dev = &edge_port->port->dev; |
1da177e4 LT |
1021 | DEFINE_WAIT(wait); |
1022 | __u16 lastCredits; | |
1023 | int timeout = 1*HZ; | |
1024 | int loop = 10; | |
1025 | ||
1026 | while (1) { | |
03f0dbf7 | 1027 | /* Save Last credits */ |
1da177e4 LT |
1028 | lastCredits = edge_port->txCredits; |
1029 | ||
03f0dbf7 | 1030 | /* Did we get our Chase response */ |
cb8eaa8b | 1031 | if (!edge_port->chaseResponsePending) { |
984f6868 | 1032 | dev_dbg(dev, "%s - Got Chase Response\n", __func__); |
1da177e4 | 1033 | |
03f0dbf7 AC |
1034 | /* did we get all of our credit back? */ |
1035 | if (edge_port->txCredits == edge_port->maxTxCredits) { | |
984f6868 | 1036 | dev_dbg(dev, "%s - Got all credits\n", __func__); |
1da177e4 LT |
1037 | return; |
1038 | } | |
1039 | } | |
1040 | ||
03f0dbf7 AC |
1041 | /* Block the thread for a while */ |
1042 | prepare_to_wait(&edge_port->wait_chase, &wait, | |
1043 | TASK_UNINTERRUPTIBLE); | |
1da177e4 LT |
1044 | schedule_timeout(timeout); |
1045 | finish_wait(&edge_port->wait_chase, &wait); | |
1046 | ||
1047 | if (lastCredits == edge_port->txCredits) { | |
03f0dbf7 | 1048 | /* No activity.. count down. */ |
1da177e4 LT |
1049 | loop--; |
1050 | if (loop == 0) { | |
cb8eaa8b | 1051 | edge_port->chaseResponsePending = false; |
984f6868 | 1052 | dev_dbg(dev, "%s - Chase TIMEOUT\n", __func__); |
1da177e4 LT |
1053 | return; |
1054 | } | |
1055 | } else { | |
03f0dbf7 | 1056 | /* Reset timeout value back to 10 seconds */ |
984f6868 | 1057 | dev_dbg(dev, "%s - Last %d, Current %d\n", __func__, |
03f0dbf7 | 1058 | lastCredits, edge_port->txCredits); |
1da177e4 LT |
1059 | loop = 10; |
1060 | } | |
1061 | } | |
1062 | } | |
1063 | ||
1064 | ||
1065 | /************************************************************************ | |
1066 | * | |
1067 | * block_until_tx_empty | |
1068 | * | |
1069 | * This function will block the close until one of the following: | |
1070 | * 1. TX count are 0 | |
1071 | * 2. The edgeport has stopped | |
dc0d5c1e | 1072 | * 3. A timeout of 3 seconds without activity has expired |
1da177e4 LT |
1073 | * |
1074 | ************************************************************************/ | |
03f0dbf7 | 1075 | static void block_until_tx_empty(struct edgeport_port *edge_port) |
1da177e4 | 1076 | { |
984f6868 | 1077 | struct device *dev = &edge_port->port->dev; |
1da177e4 LT |
1078 | DEFINE_WAIT(wait); |
1079 | struct TxFifo *fifo = &edge_port->txfifo; | |
1080 | __u32 lastCount; | |
1081 | int timeout = HZ/10; | |
1082 | int loop = 30; | |
1083 | ||
1084 | while (1) { | |
03f0dbf7 | 1085 | /* Save Last count */ |
1da177e4 LT |
1086 | lastCount = fifo->count; |
1087 | ||
03f0dbf7 | 1088 | /* Is the Edgeport Buffer empty? */ |
1da177e4 | 1089 | if (lastCount == 0) { |
984f6868 | 1090 | dev_dbg(dev, "%s - TX Buffer Empty\n", __func__); |
1da177e4 LT |
1091 | return; |
1092 | } | |
1093 | ||
03f0dbf7 AC |
1094 | /* Block the thread for a while */ |
1095 | prepare_to_wait(&edge_port->wait_chase, &wait, | |
1096 | TASK_UNINTERRUPTIBLE); | |
1da177e4 LT |
1097 | schedule_timeout(timeout); |
1098 | finish_wait(&edge_port->wait_chase, &wait); | |
1099 | ||
984f6868 | 1100 | dev_dbg(dev, "%s wait\n", __func__); |
1da177e4 LT |
1101 | |
1102 | if (lastCount == fifo->count) { | |
03f0dbf7 | 1103 | /* No activity.. count down. */ |
1da177e4 LT |
1104 | loop--; |
1105 | if (loop == 0) { | |
984f6868 | 1106 | dev_dbg(dev, "%s - TIMEOUT\n", __func__); |
1da177e4 LT |
1107 | return; |
1108 | } | |
1109 | } else { | |
03f0dbf7 | 1110 | /* Reset timeout value back to seconds */ |
1da177e4 LT |
1111 | loop = 30; |
1112 | } | |
1113 | } | |
1114 | } | |
1115 | ||
1116 | ||
1117 | /***************************************************************************** | |
1118 | * edge_close | |
1119 | * this function is called by the tty driver when a port is closed | |
1120 | *****************************************************************************/ | |
335f8514 | 1121 | static void edge_close(struct usb_serial_port *port) |
1da177e4 LT |
1122 | { |
1123 | struct edgeport_serial *edge_serial; | |
1124 | struct edgeport_port *edge_port; | |
1125 | int status; | |
1126 | ||
1da177e4 LT |
1127 | edge_serial = usb_get_serial_data(port->serial); |
1128 | edge_port = usb_get_serial_port_data(port); | |
03f0dbf7 | 1129 | if (edge_serial == NULL || edge_port == NULL) |
1da177e4 | 1130 | return; |
03f0dbf7 AC |
1131 | |
1132 | /* block until tx is empty */ | |
1da177e4 LT |
1133 | block_until_tx_empty(edge_port); |
1134 | ||
cb8eaa8b | 1135 | edge_port->closePending = true; |
1da177e4 | 1136 | |
232dce89 GB |
1137 | if (!edge_serial->is_epic || |
1138 | edge_serial->epic_descriptor.Supports.IOSPChase) { | |
6e8cf775 | 1139 | /* flush and chase */ |
cb8eaa8b | 1140 | edge_port->chaseResponsePending = true; |
6e8cf775 | 1141 | |
984f6868 | 1142 | dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__); |
03f0dbf7 AC |
1143 | status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0); |
1144 | if (status == 0) | |
1145 | /* block until chase finished */ | |
6e8cf775 | 1146 | block_until_chase_response(edge_port); |
03f0dbf7 | 1147 | else |
cb8eaa8b | 1148 | edge_port->chaseResponsePending = false; |
1da177e4 LT |
1149 | } |
1150 | ||
232dce89 GB |
1151 | if (!edge_serial->is_epic || |
1152 | edge_serial->epic_descriptor.Supports.IOSPClose) { | |
6e8cf775 | 1153 | /* close the port */ |
984f6868 | 1154 | dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLOSE_PORT\n", __func__); |
03f0dbf7 | 1155 | send_iosp_ext_cmd(edge_port, IOSP_CMD_CLOSE_PORT, 0); |
6e8cf775 | 1156 | } |
1da177e4 | 1157 | |
03f0dbf7 | 1158 | /* port->close = true; */ |
cb8eaa8b RK |
1159 | edge_port->closePending = false; |
1160 | edge_port->open = false; | |
1161 | edge_port->openPending = false; | |
1da177e4 | 1162 | |
9a25f44f | 1163 | usb_kill_urb(edge_port->write_urb); |
1da177e4 LT |
1164 | |
1165 | if (edge_port->write_urb) { | |
03f0dbf7 AC |
1166 | /* if this urb had a transfer buffer already |
1167 | (old transfer) free it */ | |
1bc3c9e1 JJ |
1168 | kfree(edge_port->write_urb->transfer_buffer); |
1169 | usb_free_urb(edge_port->write_urb); | |
1da177e4 LT |
1170 | edge_port->write_urb = NULL; |
1171 | } | |
1bc3c9e1 JJ |
1172 | kfree(edge_port->txfifo.fifo); |
1173 | edge_port->txfifo.fifo = NULL; | |
03f0dbf7 | 1174 | } |
1da177e4 LT |
1175 | |
1176 | /***************************************************************************** | |
1177 | * SerialWrite | |
03f0dbf7 AC |
1178 | * this function is called by the tty driver when data should be written |
1179 | * to the port. | |
1180 | * If successful, we return the number of bytes written, otherwise we | |
1181 | * return a negative error number. | |
1da177e4 | 1182 | *****************************************************************************/ |
95da310e AC |
1183 | static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, |
1184 | const unsigned char *data, int count) | |
1da177e4 LT |
1185 | { |
1186 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1187 | struct TxFifo *fifo; | |
1188 | int copySize; | |
1189 | int bytesleft; | |
1190 | int firsthalf; | |
1191 | int secondhalf; | |
1192 | unsigned long flags; | |
1193 | ||
1da177e4 LT |
1194 | if (edge_port == NULL) |
1195 | return -ENODEV; | |
1196 | ||
03f0dbf7 | 1197 | /* get a pointer to the Tx fifo */ |
1da177e4 LT |
1198 | fifo = &edge_port->txfifo; |
1199 | ||
1200 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
1201 | ||
03f0dbf7 AC |
1202 | /* calculate number of bytes to put in fifo */ |
1203 | copySize = min((unsigned int)count, | |
1204 | (edge_port->txCredits - fifo->count)); | |
1da177e4 | 1205 | |
1143832e GKH |
1206 | dev_dbg(&port->dev, "%s of %d byte(s) Fifo room %d -- will copy %d bytes\n", |
1207 | __func__, count, edge_port->txCredits - fifo->count, copySize); | |
1da177e4 | 1208 | |
03f0dbf7 AC |
1209 | /* catch writes of 0 bytes which the tty driver likes to give us, |
1210 | and when txCredits is empty */ | |
1da177e4 | 1211 | if (copySize == 0) { |
984f6868 | 1212 | dev_dbg(&port->dev, "%s - copySize = Zero\n", __func__); |
1da177e4 LT |
1213 | goto finish_write; |
1214 | } | |
1215 | ||
03f0dbf7 AC |
1216 | /* queue the data |
1217 | * since we can never overflow the buffer we do not have to check for a | |
1218 | * full condition | |
1219 | * | |
1220 | * the copy is done is two parts -- first fill to the end of the buffer | |
1221 | * then copy the reset from the start of the buffer | |
1222 | */ | |
1da177e4 | 1223 | bytesleft = fifo->size - fifo->head; |
03f0dbf7 | 1224 | firsthalf = min(bytesleft, copySize); |
984f6868 GKH |
1225 | dev_dbg(&port->dev, "%s - copy %d bytes of %d into fifo \n", __func__, |
1226 | firsthalf, bytesleft); | |
1da177e4 LT |
1227 | |
1228 | /* now copy our data */ | |
1229 | memcpy(&fifo->fifo[fifo->head], data, firsthalf); | |
59d33f2f | 1230 | usb_serial_debug_data(&port->dev, __func__, firsthalf, &fifo->fifo[fifo->head]); |
1da177e4 | 1231 | |
03f0dbf7 | 1232 | /* update the index and size */ |
1da177e4 LT |
1233 | fifo->head += firsthalf; |
1234 | fifo->count += firsthalf; | |
1235 | ||
03f0dbf7 AC |
1236 | /* wrap the index */ |
1237 | if (fifo->head == fifo->size) | |
1da177e4 | 1238 | fifo->head = 0; |
1da177e4 LT |
1239 | |
1240 | secondhalf = copySize-firsthalf; | |
1241 | ||
1242 | if (secondhalf) { | |
984f6868 | 1243 | dev_dbg(&port->dev, "%s - copy rest of data %d\n", __func__, secondhalf); |
1da177e4 | 1244 | memcpy(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf); |
59d33f2f | 1245 | usb_serial_debug_data(&port->dev, __func__, secondhalf, &fifo->fifo[fifo->head]); |
03f0dbf7 | 1246 | /* update the index and size */ |
1da177e4 LT |
1247 | fifo->count += secondhalf; |
1248 | fifo->head += secondhalf; | |
03f0dbf7 AC |
1249 | /* No need to check for wrap since we can not get to end of |
1250 | * the fifo in this part | |
1251 | */ | |
1da177e4 LT |
1252 | } |
1253 | ||
1254 | finish_write: | |
1255 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
1256 | ||
03f0dbf7 AC |
1257 | send_more_port_data((struct edgeport_serial *) |
1258 | usb_get_serial_data(port->serial), edge_port); | |
1da177e4 | 1259 | |
984f6868 GKH |
1260 | dev_dbg(&port->dev, "%s wrote %d byte(s) TxCredits %d, Fifo %d\n", |
1261 | __func__, copySize, edge_port->txCredits, fifo->count); | |
1da177e4 | 1262 | |
03f0dbf7 | 1263 | return copySize; |
1da177e4 LT |
1264 | } |
1265 | ||
1266 | ||
1267 | /************************************************************************ | |
1268 | * | |
1269 | * send_more_port_data() | |
1270 | * | |
1271 | * This routine attempts to write additional UART transmit data | |
1272 | * to a port over the USB bulk pipe. It is called (1) when new | |
1273 | * data has been written to a port's TxBuffer from higher layers | |
1274 | * (2) when the peripheral sends us additional TxCredits indicating | |
1275 | * that it can accept more Tx data for a given port; and (3) when | |
1276 | * a bulk write completes successfully and we want to see if we | |
1277 | * can transmit more. | |
1278 | * | |
1279 | ************************************************************************/ | |
03f0dbf7 AC |
1280 | static void send_more_port_data(struct edgeport_serial *edge_serial, |
1281 | struct edgeport_port *edge_port) | |
1da177e4 LT |
1282 | { |
1283 | struct TxFifo *fifo = &edge_port->txfifo; | |
984f6868 | 1284 | struct device *dev = &edge_port->port->dev; |
1da177e4 LT |
1285 | struct urb *urb; |
1286 | unsigned char *buffer; | |
1287 | int status; | |
1288 | int count; | |
1289 | int bytesleft; | |
1290 | int firsthalf; | |
1291 | int secondhalf; | |
1292 | unsigned long flags; | |
1293 | ||
1da177e4 LT |
1294 | spin_lock_irqsave(&edge_port->ep_lock, flags); |
1295 | ||
1296 | if (edge_port->write_in_progress || | |
1297 | !edge_port->open || | |
1298 | (fifo->count == 0)) { | |
1143832e GKH |
1299 | dev_dbg(dev, "%s EXIT - fifo %d, PendingWrite = %d\n", |
1300 | __func__, fifo->count, edge_port->write_in_progress); | |
1da177e4 LT |
1301 | goto exit_send; |
1302 | } | |
1303 | ||
03f0dbf7 AC |
1304 | /* since the amount of data in the fifo will always fit into the |
1305 | * edgeport buffer we do not need to check the write length | |
1306 | * | |
1307 | * Do we have enough credits for this port to make it worthwhile | |
1308 | * to bother queueing a write. If it's too small, say a few bytes, | |
1309 | * it's better to wait for more credits so we can do a larger write. | |
1310 | */ | |
1311 | if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits, EDGE_FW_BULK_MAX_PACKET_SIZE)) { | |
1143832e GKH |
1312 | dev_dbg(dev, "%s Not enough credit - fifo %d TxCredit %d\n", |
1313 | __func__, fifo->count, edge_port->txCredits); | |
1da177e4 LT |
1314 | goto exit_send; |
1315 | } | |
1316 | ||
03f0dbf7 | 1317 | /* lock this write */ |
cb8eaa8b | 1318 | edge_port->write_in_progress = true; |
1da177e4 | 1319 | |
03f0dbf7 | 1320 | /* get a pointer to the write_urb */ |
1da177e4 LT |
1321 | urb = edge_port->write_urb; |
1322 | ||
1bc3c9e1 JJ |
1323 | /* make sure transfer buffer is freed */ |
1324 | kfree(urb->transfer_buffer); | |
1325 | urb->transfer_buffer = NULL; | |
1da177e4 | 1326 | |
03f0dbf7 AC |
1327 | /* build the data header for the buffer and port that we are about |
1328 | to send out */ | |
1da177e4 | 1329 | count = fifo->count; |
03f0dbf7 | 1330 | buffer = kmalloc(count+2, GFP_ATOMIC); |
10c642d0 | 1331 | if (!buffer) { |
cb8eaa8b | 1332 | edge_port->write_in_progress = false; |
1da177e4 LT |
1333 | goto exit_send; |
1334 | } | |
1143832e GKH |
1335 | buffer[0] = IOSP_BUILD_DATA_HDR1(edge_port->port->port_number, count); |
1336 | buffer[1] = IOSP_BUILD_DATA_HDR2(edge_port->port->port_number, count); | |
1da177e4 LT |
1337 | |
1338 | /* now copy our data */ | |
1339 | bytesleft = fifo->size - fifo->tail; | |
03f0dbf7 | 1340 | firsthalf = min(bytesleft, count); |
1da177e4 LT |
1341 | memcpy(&buffer[2], &fifo->fifo[fifo->tail], firsthalf); |
1342 | fifo->tail += firsthalf; | |
1343 | fifo->count -= firsthalf; | |
03f0dbf7 | 1344 | if (fifo->tail == fifo->size) |
1da177e4 | 1345 | fifo->tail = 0; |
1da177e4 LT |
1346 | |
1347 | secondhalf = count-firsthalf; | |
1348 | if (secondhalf) { | |
03f0dbf7 AC |
1349 | memcpy(&buffer[2+firsthalf], &fifo->fifo[fifo->tail], |
1350 | secondhalf); | |
1da177e4 LT |
1351 | fifo->tail += secondhalf; |
1352 | fifo->count -= secondhalf; | |
1353 | } | |
1354 | ||
1355 | if (count) | |
59d33f2f | 1356 | usb_serial_debug_data(&edge_port->port->dev, __func__, count, &buffer[2]); |
1da177e4 LT |
1357 | |
1358 | /* fill up the urb with all of our data and submit it */ | |
03f0dbf7 AC |
1359 | usb_fill_bulk_urb(urb, edge_serial->serial->dev, |
1360 | usb_sndbulkpipe(edge_serial->serial->dev, | |
1361 | edge_serial->bulk_out_endpoint), | |
1362 | buffer, count+2, | |
1363 | edge_bulk_out_data_callback, edge_port); | |
1da177e4 LT |
1364 | |
1365 | /* decrement the number of credits we have by the number we just sent */ | |
1366 | edge_port->txCredits -= count; | |
d36a7712 | 1367 | edge_port->port->icount.tx += count; |
1da177e4 | 1368 | |
1da177e4 LT |
1369 | status = usb_submit_urb(urb, GFP_ATOMIC); |
1370 | if (status) { | |
1371 | /* something went wrong */ | |
22a416c4 | 1372 | dev_err_console(edge_port->port, |
03f0dbf7 AC |
1373 | "%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n", |
1374 | __func__, status); | |
cb8eaa8b | 1375 | edge_port->write_in_progress = false; |
1da177e4 LT |
1376 | |
1377 | /* revert the credits as something bad happened. */ | |
1378 | edge_port->txCredits += count; | |
d36a7712 | 1379 | edge_port->port->icount.tx -= count; |
1da177e4 | 1380 | } |
984f6868 GKH |
1381 | dev_dbg(dev, "%s wrote %d byte(s) TxCredit %d, Fifo %d\n", |
1382 | __func__, count, edge_port->txCredits, fifo->count); | |
1da177e4 LT |
1383 | |
1384 | exit_send: | |
1385 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
1386 | } | |
1387 | ||
1388 | ||
1389 | /***************************************************************************** | |
1390 | * edge_write_room | |
03f0dbf7 AC |
1391 | * this function is called by the tty driver when it wants to know how |
1392 | * many bytes of data we can accept for a specific port. If successful, | |
1393 | * we return the amount of room that we have for this port (the txCredits) | |
1394 | * otherwise we return a negative error number. | |
1da177e4 | 1395 | *****************************************************************************/ |
95da310e | 1396 | static int edge_write_room(struct tty_struct *tty) |
1da177e4 | 1397 | { |
95da310e | 1398 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1399 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1400 | int room; | |
1401 | unsigned long flags; | |
1402 | ||
1da177e4 | 1403 | if (edge_port == NULL) |
d76f2f44 | 1404 | return 0; |
cb8eaa8b | 1405 | if (edge_port->closePending) |
d76f2f44 | 1406 | return 0; |
1da177e4 | 1407 | |
1da177e4 | 1408 | if (!edge_port->open) { |
984f6868 | 1409 | dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
d76f2f44 | 1410 | return 0; |
1da177e4 LT |
1411 | } |
1412 | ||
03f0dbf7 | 1413 | /* total of both buffers is still txCredit */ |
1da177e4 LT |
1414 | spin_lock_irqsave(&edge_port->ep_lock, flags); |
1415 | room = edge_port->txCredits - edge_port->txfifo.count; | |
1416 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
1417 | ||
984f6868 | 1418 | dev_dbg(&port->dev, "%s - returns %d\n", __func__, room); |
1da177e4 LT |
1419 | return room; |
1420 | } | |
1421 | ||
1422 | ||
1423 | /***************************************************************************** | |
1424 | * edge_chars_in_buffer | |
03f0dbf7 AC |
1425 | * this function is called by the tty driver when it wants to know how |
1426 | * many bytes of data we currently have outstanding in the port (data that | |
1427 | * has been written, but hasn't made it out the port yet) | |
1428 | * If successful, we return the number of bytes left to be written in the | |
1429 | * system, | |
1da177e4 LT |
1430 | * Otherwise we return a negative error number. |
1431 | *****************************************************************************/ | |
95da310e | 1432 | static int edge_chars_in_buffer(struct tty_struct *tty) |
1da177e4 | 1433 | { |
95da310e | 1434 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1435 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1436 | int num_chars; | |
1437 | unsigned long flags; | |
1438 | ||
1da177e4 | 1439 | if (edge_port == NULL) |
d76f2f44 | 1440 | return 0; |
cb8eaa8b | 1441 | if (edge_port->closePending) |
d76f2f44 | 1442 | return 0; |
1da177e4 LT |
1443 | |
1444 | if (!edge_port->open) { | |
984f6868 | 1445 | dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
d76f2f44 | 1446 | return 0; |
1da177e4 LT |
1447 | } |
1448 | ||
1449 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
03f0dbf7 AC |
1450 | num_chars = edge_port->maxTxCredits - edge_port->txCredits + |
1451 | edge_port->txfifo.count; | |
1da177e4 LT |
1452 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); |
1453 | if (num_chars) { | |
1143832e | 1454 | dev_dbg(&port->dev, "%s - returns %d\n", __func__, num_chars); |
1da177e4 LT |
1455 | } |
1456 | ||
1457 | return num_chars; | |
1458 | } | |
1459 | ||
1460 | ||
1461 | /***************************************************************************** | |
1462 | * SerialThrottle | |
1463 | * this function is called by the tty driver when it wants to stop the data | |
1464 | * being read from the port. | |
1465 | *****************************************************************************/ | |
95da310e | 1466 | static void edge_throttle(struct tty_struct *tty) |
1da177e4 | 1467 | { |
95da310e | 1468 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 1469 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1da177e4 LT |
1470 | int status; |
1471 | ||
1da177e4 LT |
1472 | if (edge_port == NULL) |
1473 | return; | |
1474 | ||
1475 | if (!edge_port->open) { | |
984f6868 | 1476 | dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
1da177e4 LT |
1477 | return; |
1478 | } | |
1479 | ||
1da177e4 LT |
1480 | /* if we are implementing XON/XOFF, send the stop character */ |
1481 | if (I_IXOFF(tty)) { | |
1482 | unsigned char stop_char = STOP_CHAR(tty); | |
03f0dbf7 AC |
1483 | status = edge_write(tty, port, &stop_char, 1); |
1484 | if (status <= 0) | |
1da177e4 | 1485 | return; |
1da177e4 LT |
1486 | } |
1487 | ||
1488 | /* if we are implementing RTS/CTS, toggle that line */ | |
9db276f8 | 1489 | if (C_CRTSCTS(tty)) { |
1da177e4 | 1490 | edge_port->shadowMCR &= ~MCR_RTS; |
03f0dbf7 AC |
1491 | status = send_cmd_write_uart_register(edge_port, MCR, |
1492 | edge_port->shadowMCR); | |
1493 | if (status != 0) | |
1da177e4 | 1494 | return; |
1da177e4 | 1495 | } |
1da177e4 LT |
1496 | } |
1497 | ||
1498 | ||
1499 | /***************************************************************************** | |
1500 | * edge_unthrottle | |
03f0dbf7 AC |
1501 | * this function is called by the tty driver when it wants to resume the |
1502 | * data being read from the port (called after SerialThrottle is called) | |
1da177e4 | 1503 | *****************************************************************************/ |
95da310e | 1504 | static void edge_unthrottle(struct tty_struct *tty) |
1da177e4 | 1505 | { |
95da310e | 1506 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 1507 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1da177e4 LT |
1508 | int status; |
1509 | ||
1da177e4 LT |
1510 | if (edge_port == NULL) |
1511 | return; | |
1512 | ||
1513 | if (!edge_port->open) { | |
984f6868 | 1514 | dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
1da177e4 LT |
1515 | return; |
1516 | } | |
1517 | ||
1da177e4 LT |
1518 | /* if we are implementing XON/XOFF, send the start character */ |
1519 | if (I_IXOFF(tty)) { | |
1520 | unsigned char start_char = START_CHAR(tty); | |
95da310e AC |
1521 | status = edge_write(tty, port, &start_char, 1); |
1522 | if (status <= 0) | |
1da177e4 | 1523 | return; |
1da177e4 | 1524 | } |
1da177e4 | 1525 | /* if we are implementing RTS/CTS, toggle that line */ |
9db276f8 | 1526 | if (C_CRTSCTS(tty)) { |
1da177e4 | 1527 | edge_port->shadowMCR |= MCR_RTS; |
03f0dbf7 AC |
1528 | send_cmd_write_uart_register(edge_port, MCR, |
1529 | edge_port->shadowMCR); | |
1da177e4 | 1530 | } |
1da177e4 LT |
1531 | } |
1532 | ||
1533 | ||
1534 | /***************************************************************************** | |
1535 | * SerialSetTermios | |
03f0dbf7 AC |
1536 | * this function is called by the tty driver when it wants to change |
1537 | * the termios structure | |
1da177e4 | 1538 | *****************************************************************************/ |
95da310e AC |
1539 | static void edge_set_termios(struct tty_struct *tty, |
1540 | struct usb_serial_port *port, struct ktermios *old_termios) | |
1da177e4 LT |
1541 | { |
1542 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1da177e4 LT |
1543 | |
1544 | if (edge_port == NULL) | |
1545 | return; | |
1546 | ||
1547 | if (!edge_port->open) { | |
984f6868 | 1548 | dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
1da177e4 LT |
1549 | return; |
1550 | } | |
1551 | ||
1552 | /* change the port settings to the new ones specified */ | |
95da310e | 1553 | change_port_settings(tty, edge_port, old_termios); |
1da177e4 LT |
1554 | } |
1555 | ||
1556 | ||
1557 | /***************************************************************************** | |
1558 | * get_lsr_info - get line status register info | |
1559 | * | |
1560 | * Purpose: Let user call ioctl() to get info when the UART physically | |
1561 | * is emptied. On bus types like RS485, the transmitter must | |
1562 | * release the bus after transmitting. This must be done when | |
1563 | * the transmit shift register is empty, not be done when the | |
1564 | * transmit holding register is empty. This functionality | |
03f0dbf7 | 1565 | * allows an RS485 driver to be written in user space. |
1da177e4 | 1566 | *****************************************************************************/ |
03f0dbf7 AC |
1567 | static int get_lsr_info(struct edgeport_port *edge_port, |
1568 | unsigned int __user *value) | |
1da177e4 LT |
1569 | { |
1570 | unsigned int result = 0; | |
1571 | unsigned long flags; | |
1572 | ||
1573 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
1574 | if (edge_port->maxTxCredits == edge_port->txCredits && | |
1575 | edge_port->txfifo.count == 0) { | |
984f6868 | 1576 | dev_dbg(&edge_port->port->dev, "%s -- Empty\n", __func__); |
1da177e4 LT |
1577 | result = TIOCSER_TEMT; |
1578 | } | |
1579 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
1580 | ||
1581 | if (copy_to_user(value, &result, sizeof(int))) | |
1582 | return -EFAULT; | |
1583 | return 0; | |
1584 | } | |
1585 | ||
20b9d177 | 1586 | static int edge_tiocmset(struct tty_struct *tty, |
03f0dbf7 | 1587 | unsigned int set, unsigned int clear) |
1da177e4 | 1588 | { |
95da310e | 1589 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1590 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1591 | unsigned int mcr; | |
1592 | ||
1da177e4 LT |
1593 | mcr = edge_port->shadowMCR; |
1594 | if (set & TIOCM_RTS) | |
1595 | mcr |= MCR_RTS; | |
1596 | if (set & TIOCM_DTR) | |
1597 | mcr |= MCR_DTR; | |
1598 | if (set & TIOCM_LOOP) | |
1599 | mcr |= MCR_LOOPBACK; | |
1600 | ||
1601 | if (clear & TIOCM_RTS) | |
1602 | mcr &= ~MCR_RTS; | |
1603 | if (clear & TIOCM_DTR) | |
1604 | mcr &= ~MCR_DTR; | |
1605 | if (clear & TIOCM_LOOP) | |
1606 | mcr &= ~MCR_LOOPBACK; | |
1607 | ||
1608 | edge_port->shadowMCR = mcr; | |
1609 | ||
1610 | send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR); | |
1611 | ||
1612 | return 0; | |
1613 | } | |
1614 | ||
60b33c13 | 1615 | static int edge_tiocmget(struct tty_struct *tty) |
1da177e4 | 1616 | { |
95da310e | 1617 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1618 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1619 | unsigned int result = 0; | |
1620 | unsigned int msr; | |
1621 | unsigned int mcr; | |
1622 | ||
1da177e4 LT |
1623 | msr = edge_port->shadowMSR; |
1624 | mcr = edge_port->shadowMCR; | |
1625 | result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ | |
1626 | | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ | |
1627 | | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ | |
1628 | | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */ | |
1629 | | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ | |
1630 | | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ | |
1631 | ||
1da177e4 LT |
1632 | return result; |
1633 | } | |
1634 | ||
03f0dbf7 AC |
1635 | static int get_serial_info(struct edgeport_port *edge_port, |
1636 | struct serial_struct __user *retinfo) | |
1da177e4 LT |
1637 | { |
1638 | struct serial_struct tmp; | |
1639 | ||
1da177e4 LT |
1640 | memset(&tmp, 0, sizeof(tmp)); |
1641 | ||
1642 | tmp.type = PORT_16550A; | |
e5b1e206 | 1643 | tmp.line = edge_port->port->minor; |
1143832e | 1644 | tmp.port = edge_port->port->port_number; |
1da177e4 | 1645 | tmp.irq = 0; |
1da177e4 LT |
1646 | tmp.xmit_fifo_size = edge_port->maxTxCredits; |
1647 | tmp.baud_base = 9600; | |
1648 | tmp.close_delay = 5*HZ; | |
1649 | tmp.closing_wait = 30*HZ; | |
1da177e4 LT |
1650 | |
1651 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) | |
1652 | return -EFAULT; | |
1653 | return 0; | |
1654 | } | |
1655 | ||
1656 | ||
1da177e4 LT |
1657 | /***************************************************************************** |
1658 | * SerialIoctl | |
1659 | * this function handles any ioctl calls to the driver | |
1660 | *****************************************************************************/ | |
00a0d0d6 | 1661 | static int edge_ioctl(struct tty_struct *tty, |
95da310e | 1662 | unsigned int cmd, unsigned long arg) |
1da177e4 | 1663 | { |
95da310e | 1664 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1665 | DEFINE_WAIT(wait); |
1666 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1da177e4 | 1667 | |
1da177e4 | 1668 | switch (cmd) { |
03f0dbf7 | 1669 | case TIOCSERGETLSR: |
1143832e | 1670 | dev_dbg(&port->dev, "%s TIOCSERGETLSR\n", __func__); |
03f0dbf7 AC |
1671 | return get_lsr_info(edge_port, (unsigned int __user *) arg); |
1672 | ||
1673 | case TIOCGSERIAL: | |
1143832e | 1674 | dev_dbg(&port->dev, "%s TIOCGSERIAL\n", __func__); |
03f0dbf7 | 1675 | return get_serial_info(edge_port, (struct serial_struct __user *) arg); |
1da177e4 | 1676 | } |
1da177e4 LT |
1677 | return -ENOIOCTLCMD; |
1678 | } | |
1679 | ||
1680 | ||
1681 | /***************************************************************************** | |
1682 | * SerialBreak | |
1683 | * this function sends a break to the port | |
1684 | *****************************************************************************/ | |
03f0dbf7 | 1685 | static void edge_break(struct tty_struct *tty, int break_state) |
1da177e4 | 1686 | { |
95da310e | 1687 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 1688 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
6e8cf775 | 1689 | struct edgeport_serial *edge_serial = usb_get_serial_data(port->serial); |
1da177e4 LT |
1690 | int status; |
1691 | ||
232dce89 GB |
1692 | if (!edge_serial->is_epic || |
1693 | edge_serial->epic_descriptor.Supports.IOSPChase) { | |
6e8cf775 | 1694 | /* flush and chase */ |
cb8eaa8b | 1695 | edge_port->chaseResponsePending = true; |
6e8cf775 | 1696 | |
984f6868 | 1697 | dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__); |
03f0dbf7 | 1698 | status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0); |
6e8cf775 | 1699 | if (status == 0) { |
03f0dbf7 | 1700 | /* block until chase finished */ |
6e8cf775 GKH |
1701 | block_until_chase_response(edge_port); |
1702 | } else { | |
cb8eaa8b | 1703 | edge_port->chaseResponsePending = false; |
6e8cf775 | 1704 | } |
1da177e4 LT |
1705 | } |
1706 | ||
232dce89 GB |
1707 | if (!edge_serial->is_epic || |
1708 | edge_serial->epic_descriptor.Supports.IOSPSetClrBreak) { | |
6e8cf775 | 1709 | if (break_state == -1) { |
984f6868 | 1710 | dev_dbg(&port->dev, "%s - Sending IOSP_CMD_SET_BREAK\n", __func__); |
03f0dbf7 AC |
1711 | status = send_iosp_ext_cmd(edge_port, |
1712 | IOSP_CMD_SET_BREAK, 0); | |
6e8cf775 | 1713 | } else { |
984f6868 | 1714 | dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLEAR_BREAK\n", __func__); |
03f0dbf7 AC |
1715 | status = send_iosp_ext_cmd(edge_port, |
1716 | IOSP_CMD_CLEAR_BREAK, 0); | |
6e8cf775 | 1717 | } |
03f0dbf7 | 1718 | if (status) |
984f6868 | 1719 | dev_dbg(&port->dev, "%s - error sending break set/clear command.\n", |
03f0dbf7 | 1720 | __func__); |
1da177e4 | 1721 | } |
1da177e4 LT |
1722 | } |
1723 | ||
1724 | ||
1725 | /***************************************************************************** | |
1726 | * process_rcvd_data | |
1727 | * this function handles the data received on the bulk in pipe. | |
1728 | *****************************************************************************/ | |
03f0dbf7 AC |
1729 | static void process_rcvd_data(struct edgeport_serial *edge_serial, |
1730 | unsigned char *buffer, __u16 bufferLength) | |
1da177e4 | 1731 | { |
984f6868 | 1732 | struct device *dev = &edge_serial->serial->dev->dev; |
1da177e4 LT |
1733 | struct usb_serial_port *port; |
1734 | struct edgeport_port *edge_port; | |
1da177e4 LT |
1735 | __u16 lastBufferLength; |
1736 | __u16 rxLen; | |
1737 | ||
1da177e4 LT |
1738 | lastBufferLength = bufferLength + 1; |
1739 | ||
1740 | while (bufferLength > 0) { | |
1741 | /* failsafe incase we get a message that we don't understand */ | |
1742 | if (lastBufferLength == bufferLength) { | |
984f6868 | 1743 | dev_dbg(dev, "%s - stuck in loop, exiting it.\n", __func__); |
1da177e4 LT |
1744 | break; |
1745 | } | |
1746 | lastBufferLength = bufferLength; | |
1747 | ||
1748 | switch (edge_serial->rxState) { | |
03f0dbf7 AC |
1749 | case EXPECT_HDR1: |
1750 | edge_serial->rxHeader1 = *buffer; | |
1751 | ++buffer; | |
1752 | --bufferLength; | |
1da177e4 | 1753 | |
03f0dbf7 AC |
1754 | if (bufferLength == 0) { |
1755 | edge_serial->rxState = EXPECT_HDR2; | |
1756 | break; | |
1757 | } | |
1758 | /* otherwise, drop on through */ | |
1759 | case EXPECT_HDR2: | |
1760 | edge_serial->rxHeader2 = *buffer; | |
1761 | ++buffer; | |
1762 | --bufferLength; | |
1763 | ||
984f6868 GKH |
1764 | dev_dbg(dev, "%s - Hdr1=%02X Hdr2=%02X\n", __func__, |
1765 | edge_serial->rxHeader1, edge_serial->rxHeader2); | |
03f0dbf7 AC |
1766 | /* Process depending on whether this header is |
1767 | * data or status */ | |
1768 | ||
1769 | if (IS_CMD_STAT_HDR(edge_serial->rxHeader1)) { | |
1770 | /* Decode this status header and go to | |
1771 | * EXPECT_HDR1 (if we can process the status | |
1772 | * with only 2 bytes), or go to EXPECT_HDR3 to | |
1773 | * get the third byte. */ | |
1774 | edge_serial->rxPort = | |
1775 | IOSP_GET_HDR_PORT(edge_serial->rxHeader1); | |
1776 | edge_serial->rxStatusCode = | |
1777 | IOSP_GET_STATUS_CODE( | |
1778 | edge_serial->rxHeader1); | |
1779 | ||
1780 | if (!IOSP_STATUS_IS_2BYTE( | |
1781 | edge_serial->rxStatusCode)) { | |
1782 | /* This status needs additional bytes. | |
1783 | * Save what we have and then wait for | |
1784 | * more data. | |
1785 | */ | |
1786 | edge_serial->rxStatusParam | |
1787 | = edge_serial->rxHeader2; | |
1788 | edge_serial->rxState = EXPECT_HDR3; | |
1da177e4 LT |
1789 | break; |
1790 | } | |
03f0dbf7 AC |
1791 | /* We have all the header bytes, process the |
1792 | status now */ | |
1793 | process_rcvd_status(edge_serial, | |
1794 | edge_serial->rxHeader2, 0); | |
1795 | edge_serial->rxState = EXPECT_HDR1; | |
1796 | break; | |
1797 | } else { | |
1798 | edge_serial->rxPort = | |
1799 | IOSP_GET_HDR_PORT(edge_serial->rxHeader1); | |
1800 | edge_serial->rxBytesRemaining = | |
1801 | IOSP_GET_HDR_DATA_LEN( | |
1802 | edge_serial->rxHeader1, | |
1803 | edge_serial->rxHeader2); | |
984f6868 GKH |
1804 | dev_dbg(dev, "%s - Data for Port %u Len %u\n", |
1805 | __func__, | |
1806 | edge_serial->rxPort, | |
1807 | edge_serial->rxBytesRemaining); | |
03f0dbf7 AC |
1808 | |
1809 | /* ASSERT(DevExt->RxPort < DevExt->NumPorts); | |
1810 | * ASSERT(DevExt->RxBytesRemaining < | |
1811 | * IOSP_MAX_DATA_LENGTH); | |
1812 | */ | |
1da177e4 | 1813 | |
03f0dbf7 AC |
1814 | if (bufferLength == 0) { |
1815 | edge_serial->rxState = EXPECT_DATA; | |
1da177e4 | 1816 | break; |
1da177e4 | 1817 | } |
03f0dbf7 AC |
1818 | /* Else, drop through */ |
1819 | } | |
1820 | case EXPECT_DATA: /* Expect data */ | |
1821 | if (bufferLength < edge_serial->rxBytesRemaining) { | |
1822 | rxLen = bufferLength; | |
1823 | /* Expect data to start next buffer */ | |
1824 | edge_serial->rxState = EXPECT_DATA; | |
1825 | } else { | |
1826 | /* BufLen >= RxBytesRemaining */ | |
1827 | rxLen = edge_serial->rxBytesRemaining; | |
1828 | /* Start another header next time */ | |
1829 | edge_serial->rxState = EXPECT_HDR1; | |
1830 | } | |
1da177e4 | 1831 | |
03f0dbf7 AC |
1832 | bufferLength -= rxLen; |
1833 | edge_serial->rxBytesRemaining -= rxLen; | |
1da177e4 | 1834 | |
03f0dbf7 AC |
1835 | /* spit this data back into the tty driver if this |
1836 | port is open */ | |
1837 | if (rxLen) { | |
1838 | port = edge_serial->serial->port[ | |
1839 | edge_serial->rxPort]; | |
1840 | edge_port = usb_get_serial_port_data(port); | |
1841 | if (edge_port->open) { | |
2e124b4a JS |
1842 | dev_dbg(dev, "%s - Sending %d bytes to TTY for port %d\n", |
1843 | __func__, rxLen, | |
1844 | edge_serial->rxPort); | |
1845 | edge_tty_recv(edge_port->port, buffer, | |
1846 | rxLen); | |
d36a7712 | 1847 | edge_port->port->icount.rx += rxLen; |
1da177e4 | 1848 | } |
03f0dbf7 AC |
1849 | buffer += rxLen; |
1850 | } | |
1851 | break; | |
1da177e4 | 1852 | |
03f0dbf7 AC |
1853 | case EXPECT_HDR3: /* Expect 3rd byte of status header */ |
1854 | edge_serial->rxHeader3 = *buffer; | |
1855 | ++buffer; | |
1856 | --bufferLength; | |
1857 | ||
1858 | /* We have all the header bytes, process the | |
1859 | status now */ | |
1860 | process_rcvd_status(edge_serial, | |
1861 | edge_serial->rxStatusParam, | |
1862 | edge_serial->rxHeader3); | |
1863 | edge_serial->rxState = EXPECT_HDR1; | |
1864 | break; | |
1da177e4 LT |
1865 | } |
1866 | } | |
1867 | } | |
1868 | ||
1869 | ||
1870 | /***************************************************************************** | |
1871 | * process_rcvd_status | |
03f0dbf7 AC |
1872 | * this function handles the any status messages received on the |
1873 | * bulk in pipe. | |
1da177e4 | 1874 | *****************************************************************************/ |
03f0dbf7 AC |
1875 | static void process_rcvd_status(struct edgeport_serial *edge_serial, |
1876 | __u8 byte2, __u8 byte3) | |
1da177e4 LT |
1877 | { |
1878 | struct usb_serial_port *port; | |
1879 | struct edgeport_port *edge_port; | |
4a90f09b | 1880 | struct tty_struct *tty; |
984f6868 | 1881 | struct device *dev; |
1da177e4 LT |
1882 | __u8 code = edge_serial->rxStatusCode; |
1883 | ||
1884 | /* switch the port pointer to the one being currently talked about */ | |
1885 | port = edge_serial->serial->port[edge_serial->rxPort]; | |
1886 | edge_port = usb_get_serial_port_data(port); | |
1887 | if (edge_port == NULL) { | |
03f0dbf7 AC |
1888 | dev_err(&edge_serial->serial->dev->dev, |
1889 | "%s - edge_port == NULL for port %d\n", | |
1890 | __func__, edge_serial->rxPort); | |
1da177e4 LT |
1891 | return; |
1892 | } | |
984f6868 | 1893 | dev = &port->dev; |
1da177e4 LT |
1894 | |
1895 | if (code == IOSP_EXT_STATUS) { | |
1896 | switch (byte2) { | |
03f0dbf7 AC |
1897 | case IOSP_EXT_STATUS_CHASE_RSP: |
1898 | /* we want to do EXT status regardless of port | |
1899 | * open/closed */ | |
984f6868 GKH |
1900 | dev_dbg(dev, "%s - Port %u EXT CHASE_RSP Data = %02x\n", |
1901 | __func__, edge_serial->rxPort, byte3); | |
03f0dbf7 AC |
1902 | /* Currently, the only EXT_STATUS is Chase, so process |
1903 | * here instead of one more call to one more subroutine | |
1904 | * If/when more EXT_STATUS, there'll be more work to do | |
1905 | * Also, we currently clear flag and close the port | |
1906 | * regardless of content of above's Byte3. | |
1907 | * We could choose to do something else when Byte3 says | |
1908 | * Timeout on Chase from Edgeport, like wait longer in | |
1909 | * block_until_chase_response, but for now we don't. | |
1910 | */ | |
1911 | edge_port->chaseResponsePending = false; | |
1912 | wake_up(&edge_port->wait_chase); | |
1913 | return; | |
1da177e4 | 1914 | |
03f0dbf7 | 1915 | case IOSP_EXT_STATUS_RX_CHECK_RSP: |
984f6868 GKH |
1916 | dev_dbg(dev, "%s ========== Port %u CHECK_RSP Sequence = %02x =============\n", |
1917 | __func__, edge_serial->rxPort, byte3); | |
03f0dbf7 AC |
1918 | /* Port->RxCheckRsp = true; */ |
1919 | return; | |
1da177e4 LT |
1920 | } |
1921 | } | |
1922 | ||
1923 | if (code == IOSP_STATUS_OPEN_RSP) { | |
1924 | edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3); | |
1925 | edge_port->maxTxCredits = edge_port->txCredits; | |
984f6868 GKH |
1926 | dev_dbg(dev, "%s - Port %u Open Response Initial MSR = %02x TxBufferSize = %d\n", |
1927 | __func__, edge_serial->rxPort, byte2, edge_port->txCredits); | |
03f0dbf7 | 1928 | handle_new_msr(edge_port, byte2); |
1da177e4 | 1929 | |
03f0dbf7 AC |
1930 | /* send the current line settings to the port so we are |
1931 | in sync with any further termios calls */ | |
4a90f09b AC |
1932 | tty = tty_port_tty_get(&edge_port->port->port); |
1933 | if (tty) { | |
1934 | change_port_settings(tty, | |
adc8d746 | 1935 | edge_port, &tty->termios); |
4a90f09b AC |
1936 | tty_kref_put(tty); |
1937 | } | |
1da177e4 LT |
1938 | |
1939 | /* we have completed the open */ | |
cb8eaa8b RK |
1940 | edge_port->openPending = false; |
1941 | edge_port->open = true; | |
1da177e4 LT |
1942 | wake_up(&edge_port->wait_open); |
1943 | return; | |
1944 | } | |
1945 | ||
03f0dbf7 AC |
1946 | /* If port is closed, silently discard all rcvd status. We can |
1947 | * have cases where buffered status is received AFTER the close | |
1948 | * port command is sent to the Edgeport. | |
1949 | */ | |
1950 | if (!edge_port->open || edge_port->closePending) | |
1da177e4 | 1951 | return; |
1da177e4 LT |
1952 | |
1953 | switch (code) { | |
03f0dbf7 AC |
1954 | /* Not currently sent by Edgeport */ |
1955 | case IOSP_STATUS_LSR: | |
984f6868 GKH |
1956 | dev_dbg(dev, "%s - Port %u LSR Status = %02x\n", |
1957 | __func__, edge_serial->rxPort, byte2); | |
03f0dbf7 AC |
1958 | handle_new_lsr(edge_port, false, byte2, 0); |
1959 | break; | |
1da177e4 | 1960 | |
03f0dbf7 | 1961 | case IOSP_STATUS_LSR_DATA: |
984f6868 GKH |
1962 | dev_dbg(dev, "%s - Port %u LSR Status = %02x, Data = %02x\n", |
1963 | __func__, edge_serial->rxPort, byte2, byte3); | |
03f0dbf7 AC |
1964 | /* byte2 is LSR Register */ |
1965 | /* byte3 is broken data byte */ | |
1966 | handle_new_lsr(edge_port, true, byte2, byte3); | |
1967 | break; | |
1968 | /* | |
1969 | * case IOSP_EXT_4_STATUS: | |
984f6868 | 1970 | * dev_dbg(dev, "%s - Port %u LSR Status = %02x Data = %02x\n", |
03f0dbf7 AC |
1971 | * __func__, edge_serial->rxPort, byte2, byte3); |
1972 | * break; | |
1973 | */ | |
1974 | case IOSP_STATUS_MSR: | |
984f6868 GKH |
1975 | dev_dbg(dev, "%s - Port %u MSR Status = %02x\n", |
1976 | __func__, edge_serial->rxPort, byte2); | |
03f0dbf7 AC |
1977 | /* |
1978 | * Process this new modem status and generate appropriate | |
1979 | * events, etc, based on the new status. This routine | |
1980 | * also saves the MSR in Port->ShadowMsr. | |
1981 | */ | |
1982 | handle_new_msr(edge_port, byte2); | |
1983 | break; | |
1da177e4 | 1984 | |
03f0dbf7 | 1985 | default: |
984f6868 | 1986 | dev_dbg(dev, "%s - Unrecognized IOSP status code %u\n", __func__, code); |
03f0dbf7 | 1987 | break; |
1da177e4 | 1988 | } |
1da177e4 LT |
1989 | } |
1990 | ||
1991 | ||
1992 | /***************************************************************************** | |
1993 | * edge_tty_recv | |
1994 | * this function passes data on to the tty flip buffer | |
1995 | *****************************************************************************/ | |
2e124b4a JS |
1996 | static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, |
1997 | int length) | |
1da177e4 LT |
1998 | { |
1999 | int cnt; | |
2000 | ||
05c7cd39 | 2001 | cnt = tty_insert_flip_string(&port->port, data, length); |
a108bfcb | 2002 | if (cnt < length) { |
05c7cd39 | 2003 | dev_err(&port->dev, "%s - dropping data, %d bytes lost\n", |
a108bfcb AC |
2004 | __func__, length - cnt); |
2005 | } | |
2006 | data += cnt; | |
2007 | length -= cnt; | |
1da177e4 | 2008 | |
2e124b4a | 2009 | tty_flip_buffer_push(&port->port); |
1da177e4 LT |
2010 | } |
2011 | ||
2012 | ||
2013 | /***************************************************************************** | |
2014 | * handle_new_msr | |
2015 | * this function handles any change to the msr register for a port. | |
2016 | *****************************************************************************/ | |
2017 | static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr) | |
2018 | { | |
2019 | struct async_icount *icount; | |
2020 | ||
03f0dbf7 AC |
2021 | if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | |
2022 | EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { | |
d36a7712 | 2023 | icount = &edge_port->port->icount; |
1da177e4 LT |
2024 | |
2025 | /* update input line counters */ | |
03f0dbf7 | 2026 | if (newMsr & EDGEPORT_MSR_DELTA_CTS) |
1da177e4 | 2027 | icount->cts++; |
03f0dbf7 | 2028 | if (newMsr & EDGEPORT_MSR_DELTA_DSR) |
1da177e4 | 2029 | icount->dsr++; |
03f0dbf7 | 2030 | if (newMsr & EDGEPORT_MSR_DELTA_CD) |
1da177e4 | 2031 | icount->dcd++; |
03f0dbf7 | 2032 | if (newMsr & EDGEPORT_MSR_DELTA_RI) |
1da177e4 | 2033 | icount->rng++; |
8b8070d8 | 2034 | wake_up_interruptible(&edge_port->port->port.delta_msr_wait); |
1da177e4 LT |
2035 | } |
2036 | ||
2037 | /* Save the new modem status */ | |
2038 | edge_port->shadowMSR = newMsr & 0xf0; | |
1da177e4 LT |
2039 | } |
2040 | ||
2041 | ||
2042 | /***************************************************************************** | |
2043 | * handle_new_lsr | |
2044 | * this function handles any change to the lsr register for a port. | |
2045 | *****************************************************************************/ | |
03f0dbf7 AC |
2046 | static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, |
2047 | __u8 lsr, __u8 data) | |
1da177e4 | 2048 | { |
03f0dbf7 AC |
2049 | __u8 newLsr = (__u8) (lsr & (__u8) |
2050 | (LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK)); | |
2051 | struct async_icount *icount; | |
1da177e4 | 2052 | |
1da177e4 LT |
2053 | edge_port->shadowLSR = lsr; |
2054 | ||
2055 | if (newLsr & LSR_BREAK) { | |
03f0dbf7 AC |
2056 | /* |
2057 | * Parity and Framing errors only count if they | |
2058 | * occur exclusive of a break being | |
2059 | * received. | |
2060 | */ | |
1da177e4 LT |
2061 | newLsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK); |
2062 | } | |
2063 | ||
2064 | /* Place LSR data byte into Rx buffer */ | |
2e124b4a JS |
2065 | if (lsrData) |
2066 | edge_tty_recv(edge_port->port, &data, 1); | |
2067 | ||
1da177e4 | 2068 | /* update input line counters */ |
d36a7712 | 2069 | icount = &edge_port->port->icount; |
03f0dbf7 | 2070 | if (newLsr & LSR_BREAK) |
1da177e4 | 2071 | icount->brk++; |
03f0dbf7 | 2072 | if (newLsr & LSR_OVER_ERR) |
1da177e4 | 2073 | icount->overrun++; |
03f0dbf7 | 2074 | if (newLsr & LSR_PAR_ERR) |
1da177e4 | 2075 | icount->parity++; |
03f0dbf7 | 2076 | if (newLsr & LSR_FRM_ERR) |
1da177e4 | 2077 | icount->frame++; |
1da177e4 LT |
2078 | } |
2079 | ||
2080 | ||
2081 | /**************************************************************************** | |
2082 | * sram_write | |
03f0dbf7 | 2083 | * writes a number of bytes to the Edgeport device's sram starting at the |
1da177e4 LT |
2084 | * given address. |
2085 | * If successful returns the number of bytes written, otherwise it returns | |
2086 | * a negative error number of the problem. | |
2087 | ****************************************************************************/ | |
03f0dbf7 AC |
2088 | static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, |
2089 | __u16 length, const __u8 *data) | |
1da177e4 LT |
2090 | { |
2091 | int result; | |
2092 | __u16 current_length; | |
2093 | unsigned char *transfer_buffer; | |
2094 | ||
984f6868 | 2095 | dev_dbg(&serial->dev->dev, "%s - %x, %x, %d\n", __func__, extAddr, addr, length); |
1da177e4 | 2096 | |
03f0dbf7 | 2097 | transfer_buffer = kmalloc(64, GFP_KERNEL); |
10c642d0 | 2098 | if (!transfer_buffer) |
1da177e4 | 2099 | return -ENOMEM; |
1da177e4 LT |
2100 | |
2101 | /* need to split these writes up into 64 byte chunks */ | |
2102 | result = 0; | |
2103 | while (length > 0) { | |
03f0dbf7 | 2104 | if (length > 64) |
1da177e4 | 2105 | current_length = 64; |
03f0dbf7 | 2106 | else |
1da177e4 | 2107 | current_length = length; |
03f0dbf7 | 2108 | |
984f6868 | 2109 | /* dev_dbg(&serial->dev->dev, "%s - writing %x, %x, %d\n", __func__, extAddr, addr, current_length); */ |
03f0dbf7 AC |
2110 | memcpy(transfer_buffer, data, current_length); |
2111 | result = usb_control_msg(serial->dev, | |
2112 | usb_sndctrlpipe(serial->dev, 0), | |
2113 | USB_REQUEST_ION_WRITE_RAM, | |
2114 | 0x40, addr, extAddr, transfer_buffer, | |
2115 | current_length, 300); | |
1da177e4 LT |
2116 | if (result < 0) |
2117 | break; | |
2118 | length -= current_length; | |
2119 | addr += current_length; | |
2120 | data += current_length; | |
03f0dbf7 | 2121 | } |
1da177e4 | 2122 | |
03f0dbf7 | 2123 | kfree(transfer_buffer); |
1da177e4 LT |
2124 | return result; |
2125 | } | |
2126 | ||
2127 | ||
2128 | /**************************************************************************** | |
2129 | * rom_write | |
2130 | * writes a number of bytes to the Edgeport device's ROM starting at the | |
2131 | * given address. | |
2132 | * If successful returns the number of bytes written, otherwise it returns | |
2133 | * a negative error number of the problem. | |
2134 | ****************************************************************************/ | |
03f0dbf7 AC |
2135 | static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, |
2136 | __u16 length, const __u8 *data) | |
1da177e4 LT |
2137 | { |
2138 | int result; | |
2139 | __u16 current_length; | |
2140 | unsigned char *transfer_buffer; | |
2141 | ||
03f0dbf7 | 2142 | transfer_buffer = kmalloc(64, GFP_KERNEL); |
10c642d0 | 2143 | if (!transfer_buffer) |
1da177e4 | 2144 | return -ENOMEM; |
1da177e4 LT |
2145 | |
2146 | /* need to split these writes up into 64 byte chunks */ | |
2147 | result = 0; | |
2148 | while (length > 0) { | |
03f0dbf7 | 2149 | if (length > 64) |
1da177e4 | 2150 | current_length = 64; |
03f0dbf7 | 2151 | else |
1da177e4 | 2152 | current_length = length; |
03f0dbf7 AC |
2153 | memcpy(transfer_buffer, data, current_length); |
2154 | result = usb_control_msg(serial->dev, | |
2155 | usb_sndctrlpipe(serial->dev, 0), | |
2156 | USB_REQUEST_ION_WRITE_ROM, 0x40, | |
2157 | addr, extAddr, | |
2158 | transfer_buffer, current_length, 300); | |
1da177e4 LT |
2159 | if (result < 0) |
2160 | break; | |
2161 | length -= current_length; | |
2162 | addr += current_length; | |
2163 | data += current_length; | |
03f0dbf7 | 2164 | } |
1da177e4 | 2165 | |
03f0dbf7 | 2166 | kfree(transfer_buffer); |
1da177e4 LT |
2167 | return result; |
2168 | } | |
2169 | ||
2170 | ||
2171 | /**************************************************************************** | |
2172 | * rom_read | |
2173 | * reads a number of bytes from the Edgeport device starting at the given | |
2174 | * address. | |
3c0e25d8 | 2175 | * Returns zero on success or a negative error number. |
1da177e4 | 2176 | ****************************************************************************/ |
03f0dbf7 AC |
2177 | static int rom_read(struct usb_serial *serial, __u16 extAddr, |
2178 | __u16 addr, __u16 length, __u8 *data) | |
1da177e4 LT |
2179 | { |
2180 | int result; | |
2181 | __u16 current_length; | |
2182 | unsigned char *transfer_buffer; | |
2183 | ||
03f0dbf7 | 2184 | transfer_buffer = kmalloc(64, GFP_KERNEL); |
10c642d0 | 2185 | if (!transfer_buffer) |
1da177e4 | 2186 | return -ENOMEM; |
1da177e4 LT |
2187 | |
2188 | /* need to split these reads up into 64 byte chunks */ | |
2189 | result = 0; | |
2190 | while (length > 0) { | |
03f0dbf7 | 2191 | if (length > 64) |
1da177e4 | 2192 | current_length = 64; |
03f0dbf7 | 2193 | else |
1da177e4 | 2194 | current_length = length; |
03f0dbf7 AC |
2195 | result = usb_control_msg(serial->dev, |
2196 | usb_rcvctrlpipe(serial->dev, 0), | |
2197 | USB_REQUEST_ION_READ_ROM, | |
2198 | 0xC0, addr, extAddr, transfer_buffer, | |
2199 | current_length, 300); | |
3c0e25d8 JH |
2200 | if (result < current_length) { |
2201 | if (result >= 0) | |
2202 | result = -EIO; | |
1da177e4 | 2203 | break; |
3c0e25d8 | 2204 | } |
03f0dbf7 | 2205 | memcpy(data, transfer_buffer, current_length); |
1da177e4 LT |
2206 | length -= current_length; |
2207 | addr += current_length; | |
2208 | data += current_length; | |
3c0e25d8 JH |
2209 | |
2210 | result = 0; | |
03f0dbf7 | 2211 | } |
1da177e4 | 2212 | |
03f0dbf7 | 2213 | kfree(transfer_buffer); |
1da177e4 LT |
2214 | return result; |
2215 | } | |
2216 | ||
2217 | ||
2218 | /**************************************************************************** | |
2219 | * send_iosp_ext_cmd | |
2220 | * Is used to send a IOSP message to the Edgeport device | |
2221 | ****************************************************************************/ | |
03f0dbf7 AC |
2222 | static int send_iosp_ext_cmd(struct edgeport_port *edge_port, |
2223 | __u8 command, __u8 param) | |
1da177e4 LT |
2224 | { |
2225 | unsigned char *buffer; | |
2226 | unsigned char *currentCommand; | |
2227 | int length = 0; | |
2228 | int status = 0; | |
2229 | ||
03f0dbf7 | 2230 | buffer = kmalloc(10, GFP_ATOMIC); |
10c642d0 | 2231 | if (!buffer) |
1da177e4 | 2232 | return -ENOMEM; |
1da177e4 LT |
2233 | |
2234 | currentCommand = buffer; | |
2235 | ||
1143832e GKH |
2236 | MAKE_CMD_EXT_CMD(¤tCommand, &length, edge_port->port->port_number, |
2237 | command, param); | |
1da177e4 | 2238 | |
03f0dbf7 | 2239 | status = write_cmd_usb(edge_port, buffer, length); |
1da177e4 LT |
2240 | if (status) { |
2241 | /* something bad happened, let's free up the memory */ | |
2242 | kfree(buffer); | |
2243 | } | |
2244 | ||
2245 | return status; | |
2246 | } | |
2247 | ||
2248 | ||
2249 | /***************************************************************************** | |
2250 | * write_cmd_usb | |
2251 | * this function writes the given buffer out to the bulk write endpoint. | |
2252 | *****************************************************************************/ | |
03f0dbf7 AC |
2253 | static int write_cmd_usb(struct edgeport_port *edge_port, |
2254 | unsigned char *buffer, int length) | |
1da177e4 | 2255 | { |
03f0dbf7 AC |
2256 | struct edgeport_serial *edge_serial = |
2257 | usb_get_serial_data(edge_port->port->serial); | |
984f6868 | 2258 | struct device *dev = &edge_port->port->dev; |
1da177e4 LT |
2259 | int status = 0; |
2260 | struct urb *urb; | |
1da177e4 | 2261 | |
59d33f2f | 2262 | usb_serial_debug_data(dev, __func__, length, buffer); |
1da177e4 LT |
2263 | |
2264 | /* Allocate our next urb */ | |
03f0dbf7 | 2265 | urb = usb_alloc_urb(0, GFP_ATOMIC); |
1da177e4 LT |
2266 | if (!urb) |
2267 | return -ENOMEM; | |
2268 | ||
96c706ed | 2269 | atomic_inc(&CmdUrbs); |
984f6868 GKH |
2270 | dev_dbg(dev, "%s - ALLOCATE URB %p (outstanding %d)\n", |
2271 | __func__, urb, atomic_read(&CmdUrbs)); | |
1da177e4 | 2272 | |
03f0dbf7 AC |
2273 | usb_fill_bulk_urb(urb, edge_serial->serial->dev, |
2274 | usb_sndbulkpipe(edge_serial->serial->dev, | |
2275 | edge_serial->bulk_out_endpoint), | |
2276 | buffer, length, edge_bulk_out_cmd_callback, edge_port); | |
1da177e4 | 2277 | |
cb8eaa8b | 2278 | edge_port->commandPending = true; |
1da177e4 LT |
2279 | status = usb_submit_urb(urb, GFP_ATOMIC); |
2280 | ||
2281 | if (status) { | |
2282 | /* something went wrong */ | |
984f6868 GKH |
2283 | dev_err(dev, "%s - usb_submit_urb(write command) failed, status = %d\n", |
2284 | __func__, status); | |
1da177e4 | 2285 | usb_free_urb(urb); |
96c706ed | 2286 | atomic_dec(&CmdUrbs); |
1da177e4 LT |
2287 | return status; |
2288 | } | |
2289 | ||
1da177e4 | 2290 | #if 0 |
03f0dbf7 | 2291 | wait_event(&edge_port->wait_command, !edge_port->commandPending); |
1da177e4 | 2292 | |
cb8eaa8b | 2293 | if (edge_port->commandPending) { |
1da177e4 | 2294 | /* command timed out */ |
984f6868 | 2295 | dev_dbg(dev, "%s - command timed out\n", __func__); |
1da177e4 LT |
2296 | status = -EINVAL; |
2297 | } | |
2298 | #endif | |
2299 | return status; | |
2300 | } | |
2301 | ||
2302 | ||
2303 | /***************************************************************************** | |
2304 | * send_cmd_write_baud_rate | |
2305 | * this function sends the proper command to change the baud rate of the | |
2306 | * specified port. | |
2307 | *****************************************************************************/ | |
03f0dbf7 AC |
2308 | static int send_cmd_write_baud_rate(struct edgeport_port *edge_port, |
2309 | int baudRate) | |
1da177e4 | 2310 | { |
03f0dbf7 AC |
2311 | struct edgeport_serial *edge_serial = |
2312 | usb_get_serial_data(edge_port->port->serial); | |
984f6868 | 2313 | struct device *dev = &edge_port->port->dev; |
1da177e4 LT |
2314 | unsigned char *cmdBuffer; |
2315 | unsigned char *currCmd; | |
2316 | int cmdLen = 0; | |
2317 | int divisor; | |
2318 | int status; | |
1143832e | 2319 | u32 number = edge_port->port->port_number; |
1da177e4 | 2320 | |
bc71e479 AK |
2321 | if (edge_serial->is_epic && |
2322 | !edge_serial->epic_descriptor.Supports.IOSPSetBaudRate) { | |
1143832e GKH |
2323 | dev_dbg(dev, "SendCmdWriteBaudRate - NOT Setting baud rate for port, baud = %d\n", |
2324 | baudRate); | |
6e8cf775 GKH |
2325 | return 0; |
2326 | } | |
2327 | ||
1143832e | 2328 | dev_dbg(dev, "%s - baud = %d\n", __func__, baudRate); |
1da177e4 | 2329 | |
984f6868 | 2330 | status = calc_baud_rate_divisor(dev, baudRate, &divisor); |
1da177e4 | 2331 | if (status) { |
984f6868 | 2332 | dev_err(dev, "%s - bad baud rate\n", __func__); |
1da177e4 LT |
2333 | return status; |
2334 | } | |
2335 | ||
03f0dbf7 AC |
2336 | /* Alloc memory for the string of commands. */ |
2337 | cmdBuffer = kmalloc(0x100, GFP_ATOMIC); | |
10c642d0 | 2338 | if (!cmdBuffer) |
1da177e4 | 2339 | return -ENOMEM; |
10c642d0 | 2340 | |
1da177e4 LT |
2341 | currCmd = cmdBuffer; |
2342 | ||
03f0dbf7 AC |
2343 | /* Enable access to divisor latch */ |
2344 | MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, LCR_DL_ENABLE); | |
1da177e4 | 2345 | |
03f0dbf7 AC |
2346 | /* Write the divisor itself */ |
2347 | MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLL, LOW8(divisor)); | |
2348 | MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLM, HIGH8(divisor)); | |
1da177e4 | 2349 | |
03f0dbf7 AC |
2350 | /* Restore original value to disable access to divisor latch */ |
2351 | MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, | |
2352 | edge_port->shadowLCR); | |
1da177e4 | 2353 | |
03f0dbf7 | 2354 | status = write_cmd_usb(edge_port, cmdBuffer, cmdLen); |
1da177e4 LT |
2355 | if (status) { |
2356 | /* something bad happened, let's free up the memory */ | |
03f0dbf7 | 2357 | kfree(cmdBuffer); |
1da177e4 LT |
2358 | } |
2359 | ||
2360 | return status; | |
2361 | } | |
2362 | ||
2363 | ||
2364 | /***************************************************************************** | |
2365 | * calc_baud_rate_divisor | |
2366 | * this function calculates the proper baud rate divisor for the specified | |
2367 | * baud rate. | |
2368 | *****************************************************************************/ | |
984f6868 | 2369 | static int calc_baud_rate_divisor(struct device *dev, int baudrate, int *divisor) |
1da177e4 LT |
2370 | { |
2371 | int i; | |
2372 | __u16 custom; | |
2373 | ||
52950ed4 | 2374 | for (i = 0; i < ARRAY_SIZE(divisor_table); i++) { |
03f0dbf7 | 2375 | if (divisor_table[i].BaudRate == baudrate) { |
1da177e4 LT |
2376 | *divisor = divisor_table[i].Divisor; |
2377 | return 0; | |
2378 | } | |
2379 | } | |
2380 | ||
03f0dbf7 AC |
2381 | /* We have tried all of the standard baud rates |
2382 | * lets try to calculate the divisor for this baud rate | |
2383 | * Make sure the baud rate is reasonable */ | |
1da177e4 | 2384 | if (baudrate > 50 && baudrate < 230400) { |
03f0dbf7 | 2385 | /* get divisor */ |
1da177e4 LT |
2386 | custom = (__u16)((230400L + baudrate/2) / baudrate); |
2387 | ||
2388 | *divisor = custom; | |
2389 | ||
984f6868 | 2390 | dev_dbg(dev, "%s - Baud %d = %d\n", __func__, baudrate, custom); |
1da177e4 LT |
2391 | return 0; |
2392 | } | |
2393 | ||
2394 | return -1; | |
2395 | } | |
2396 | ||
2397 | ||
2398 | /***************************************************************************** | |
2399 | * send_cmd_write_uart_register | |
fd589a8f | 2400 | * this function builds up a uart register message and sends to the device. |
1da177e4 | 2401 | *****************************************************************************/ |
03f0dbf7 AC |
2402 | static int send_cmd_write_uart_register(struct edgeport_port *edge_port, |
2403 | __u8 regNum, __u8 regValue) | |
1da177e4 | 2404 | { |
03f0dbf7 AC |
2405 | struct edgeport_serial *edge_serial = |
2406 | usb_get_serial_data(edge_port->port->serial); | |
984f6868 | 2407 | struct device *dev = &edge_port->port->dev; |
1da177e4 LT |
2408 | unsigned char *cmdBuffer; |
2409 | unsigned char *currCmd; | |
2410 | unsigned long cmdLen = 0; | |
2411 | int status; | |
2412 | ||
984f6868 GKH |
2413 | dev_dbg(dev, "%s - write to %s register 0x%02x\n", |
2414 | (regNum == MCR) ? "MCR" : "LCR", __func__, regValue); | |
1da177e4 | 2415 | |
bc71e479 AK |
2416 | if (edge_serial->is_epic && |
2417 | !edge_serial->epic_descriptor.Supports.IOSPWriteMCR && | |
2418 | regNum == MCR) { | |
984f6868 | 2419 | dev_dbg(dev, "SendCmdWriteUartReg - Not writing to MCR Register\n"); |
6e8cf775 GKH |
2420 | return 0; |
2421 | } | |
2422 | ||
bc71e479 AK |
2423 | if (edge_serial->is_epic && |
2424 | !edge_serial->epic_descriptor.Supports.IOSPWriteLCR && | |
2425 | regNum == LCR) { | |
984f6868 | 2426 | dev_dbg(dev, "SendCmdWriteUartReg - Not writing to LCR Register\n"); |
6e8cf775 GKH |
2427 | return 0; |
2428 | } | |
2429 | ||
03f0dbf7 AC |
2430 | /* Alloc memory for the string of commands. */ |
2431 | cmdBuffer = kmalloc(0x10, GFP_ATOMIC); | |
2432 | if (cmdBuffer == NULL) | |
1da177e4 | 2433 | return -ENOMEM; |
1da177e4 LT |
2434 | |
2435 | currCmd = cmdBuffer; | |
2436 | ||
03f0dbf7 | 2437 | /* Build a cmd in the buffer to write the given register */ |
1143832e GKH |
2438 | MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, edge_port->port->port_number, |
2439 | regNum, regValue); | |
1da177e4 LT |
2440 | |
2441 | status = write_cmd_usb(edge_port, cmdBuffer, cmdLen); | |
2442 | if (status) { | |
2443 | /* something bad happened, let's free up the memory */ | |
03f0dbf7 | 2444 | kfree(cmdBuffer); |
1da177e4 LT |
2445 | } |
2446 | ||
2447 | return status; | |
2448 | } | |
2449 | ||
2450 | ||
2451 | /***************************************************************************** | |
2452 | * change_port_settings | |
03f0dbf7 AC |
2453 | * This routine is called to set the UART on the device to match the |
2454 | * specified new settings. | |
1da177e4 | 2455 | *****************************************************************************/ |
95da310e AC |
2456 | |
2457 | static void change_port_settings(struct tty_struct *tty, | |
2458 | struct edgeport_port *edge_port, struct ktermios *old_termios) | |
1da177e4 | 2459 | { |
984f6868 | 2460 | struct device *dev = &edge_port->port->dev; |
03f0dbf7 AC |
2461 | struct edgeport_serial *edge_serial = |
2462 | usb_get_serial_data(edge_port->port->serial); | |
1da177e4 LT |
2463 | int baud; |
2464 | unsigned cflag; | |
2465 | __u8 mask = 0xff; | |
2466 | __u8 lData; | |
2467 | __u8 lParity; | |
2468 | __u8 lStop; | |
2469 | __u8 rxFlow; | |
2470 | __u8 txFlow; | |
2471 | int status; | |
2472 | ||
cb8eaa8b RK |
2473 | if (!edge_port->open && |
2474 | !edge_port->openPending) { | |
984f6868 | 2475 | dev_dbg(dev, "%s - port not opened\n", __func__); |
1da177e4 LT |
2476 | return; |
2477 | } | |
2478 | ||
adc8d746 | 2479 | cflag = tty->termios.c_cflag; |
1da177e4 LT |
2480 | |
2481 | switch (cflag & CSIZE) { | |
03f0dbf7 AC |
2482 | case CS5: |
2483 | lData = LCR_BITS_5; mask = 0x1f; | |
984f6868 | 2484 | dev_dbg(dev, "%s - data bits = 5\n", __func__); |
03f0dbf7 AC |
2485 | break; |
2486 | case CS6: | |
2487 | lData = LCR_BITS_6; mask = 0x3f; | |
984f6868 | 2488 | dev_dbg(dev, "%s - data bits = 6\n", __func__); |
03f0dbf7 AC |
2489 | break; |
2490 | case CS7: | |
2491 | lData = LCR_BITS_7; mask = 0x7f; | |
984f6868 | 2492 | dev_dbg(dev, "%s - data bits = 7\n", __func__); |
03f0dbf7 AC |
2493 | break; |
2494 | default: | |
2495 | case CS8: | |
2496 | lData = LCR_BITS_8; | |
984f6868 | 2497 | dev_dbg(dev, "%s - data bits = 8\n", __func__); |
03f0dbf7 | 2498 | break; |
1da177e4 LT |
2499 | } |
2500 | ||
2501 | lParity = LCR_PAR_NONE; | |
2502 | if (cflag & PARENB) { | |
2503 | if (cflag & CMSPAR) { | |
2504 | if (cflag & PARODD) { | |
2505 | lParity = LCR_PAR_MARK; | |
984f6868 | 2506 | dev_dbg(dev, "%s - parity = mark\n", __func__); |
1da177e4 LT |
2507 | } else { |
2508 | lParity = LCR_PAR_SPACE; | |
984f6868 | 2509 | dev_dbg(dev, "%s - parity = space\n", __func__); |
1da177e4 LT |
2510 | } |
2511 | } else if (cflag & PARODD) { | |
2512 | lParity = LCR_PAR_ODD; | |
984f6868 | 2513 | dev_dbg(dev, "%s - parity = odd\n", __func__); |
1da177e4 LT |
2514 | } else { |
2515 | lParity = LCR_PAR_EVEN; | |
984f6868 | 2516 | dev_dbg(dev, "%s - parity = even\n", __func__); |
1da177e4 LT |
2517 | } |
2518 | } else { | |
984f6868 | 2519 | dev_dbg(dev, "%s - parity = none\n", __func__); |
1da177e4 LT |
2520 | } |
2521 | ||
2522 | if (cflag & CSTOPB) { | |
2523 | lStop = LCR_STOP_2; | |
984f6868 | 2524 | dev_dbg(dev, "%s - stop bits = 2\n", __func__); |
1da177e4 LT |
2525 | } else { |
2526 | lStop = LCR_STOP_1; | |
984f6868 | 2527 | dev_dbg(dev, "%s - stop bits = 1\n", __func__); |
1da177e4 LT |
2528 | } |
2529 | ||
2530 | /* figure out the flow control settings */ | |
2531 | rxFlow = txFlow = 0x00; | |
2532 | if (cflag & CRTSCTS) { | |
2533 | rxFlow |= IOSP_RX_FLOW_RTS; | |
2534 | txFlow |= IOSP_TX_FLOW_CTS; | |
984f6868 | 2535 | dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__); |
1da177e4 | 2536 | } else { |
984f6868 | 2537 | dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__); |
1da177e4 LT |
2538 | } |
2539 | ||
03f0dbf7 AC |
2540 | /* if we are implementing XON/XOFF, set the start and stop character |
2541 | in the device */ | |
1da177e4 LT |
2542 | if (I_IXOFF(tty) || I_IXON(tty)) { |
2543 | unsigned char stop_char = STOP_CHAR(tty); | |
2544 | unsigned char start_char = START_CHAR(tty); | |
2545 | ||
232dce89 GB |
2546 | if (!edge_serial->is_epic || |
2547 | edge_serial->epic_descriptor.Supports.IOSPSetXChar) { | |
03f0dbf7 AC |
2548 | send_iosp_ext_cmd(edge_port, |
2549 | IOSP_CMD_SET_XON_CHAR, start_char); | |
2550 | send_iosp_ext_cmd(edge_port, | |
2551 | IOSP_CMD_SET_XOFF_CHAR, stop_char); | |
6e8cf775 | 2552 | } |
1da177e4 LT |
2553 | |
2554 | /* if we are implementing INBOUND XON/XOFF */ | |
2555 | if (I_IXOFF(tty)) { | |
2556 | rxFlow |= IOSP_RX_FLOW_XON_XOFF; | |
984f6868 GKH |
2557 | dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", |
2558 | __func__, start_char, stop_char); | |
1da177e4 | 2559 | } else { |
984f6868 | 2560 | dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__); |
1da177e4 LT |
2561 | } |
2562 | ||
2563 | /* if we are implementing OUTBOUND XON/XOFF */ | |
2564 | if (I_IXON(tty)) { | |
2565 | txFlow |= IOSP_TX_FLOW_XON_XOFF; | |
984f6868 GKH |
2566 | dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", |
2567 | __func__, start_char, stop_char); | |
1da177e4 | 2568 | } else { |
984f6868 | 2569 | dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__); |
1da177e4 LT |
2570 | } |
2571 | } | |
2572 | ||
2573 | /* Set flow control to the configured value */ | |
232dce89 GB |
2574 | if (!edge_serial->is_epic || |
2575 | edge_serial->epic_descriptor.Supports.IOSPSetRxFlow) | |
6e8cf775 | 2576 | send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow); |
232dce89 GB |
2577 | if (!edge_serial->is_epic || |
2578 | edge_serial->epic_descriptor.Supports.IOSPSetTxFlow) | |
6e8cf775 | 2579 | send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_TX_FLOW, txFlow); |
1da177e4 LT |
2580 | |
2581 | ||
2582 | edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); | |
2583 | edge_port->shadowLCR |= (lData | lParity | lStop); | |
2584 | ||
2585 | edge_port->validDataMask = mask; | |
2586 | ||
2587 | /* Send the updated LCR value to the EdgePort */ | |
03f0dbf7 AC |
2588 | status = send_cmd_write_uart_register(edge_port, LCR, |
2589 | edge_port->shadowLCR); | |
2590 | if (status != 0) | |
1da177e4 | 2591 | return; |
1da177e4 LT |
2592 | |
2593 | /* set up the MCR register and send it to the EdgePort */ | |
2594 | edge_port->shadowMCR = MCR_MASTER_IE; | |
03f0dbf7 | 2595 | if (cflag & CBAUD) |
1da177e4 | 2596 | edge_port->shadowMCR |= (MCR_DTR | MCR_RTS); |
03f0dbf7 AC |
2597 | |
2598 | status = send_cmd_write_uart_register(edge_port, MCR, | |
2599 | edge_port->shadowMCR); | |
2600 | if (status != 0) | |
1da177e4 | 2601 | return; |
1da177e4 LT |
2602 | |
2603 | /* Determine divisor based on baud rate */ | |
2604 | baud = tty_get_baud_rate(tty); | |
2605 | if (!baud) { | |
2606 | /* pick a default, any default... */ | |
2607 | baud = 9600; | |
2608 | } | |
2609 | ||
984f6868 | 2610 | dev_dbg(dev, "%s - baud rate = %d\n", __func__, baud); |
03f0dbf7 | 2611 | status = send_cmd_write_baud_rate(edge_port, baud); |
6ce073bd AC |
2612 | if (status == -1) { |
2613 | /* Speed change was not possible - put back the old speed */ | |
2614 | baud = tty_termios_baud_rate(old_termios); | |
2615 | tty_encode_baud_rate(tty, baud, baud); | |
2616 | } | |
1da177e4 LT |
2617 | } |
2618 | ||
2619 | ||
2620 | /**************************************************************************** | |
2621 | * unicode_to_ascii | |
2622 | * Turns a string from Unicode into ASCII. | |
2623 | * Doesn't do a good job with any characters that are outside the normal | |
2624 | * ASCII range, but it's only for debugging... | |
2625 | * NOTE: expects the unicode in LE format | |
2626 | ****************************************************************************/ | |
03f0dbf7 AC |
2627 | static void unicode_to_ascii(char *string, int buflen, |
2628 | __le16 *unicode, int unicode_size) | |
1da177e4 LT |
2629 | { |
2630 | int i; | |
2631 | ||
ad93375a | 2632 | if (buflen <= 0) /* never happens, but... */ |
1da177e4 | 2633 | return; |
ad93375a | 2634 | --buflen; /* space for nul */ |
1da177e4 | 2635 | |
ad93375a PZ |
2636 | for (i = 0; i < unicode_size; i++) { |
2637 | if (i >= buflen) | |
2638 | break; | |
1da177e4 | 2639 | string[i] = (char)(le16_to_cpu(unicode[i])); |
ad93375a PZ |
2640 | } |
2641 | string[i] = 0x00; | |
1da177e4 LT |
2642 | } |
2643 | ||
2644 | ||
2645 | /**************************************************************************** | |
2646 | * get_manufacturing_desc | |
03f0dbf7 | 2647 | * reads in the manufacturing descriptor and stores it into the serial |
1da177e4 LT |
2648 | * structure. |
2649 | ****************************************************************************/ | |
03f0dbf7 | 2650 | static void get_manufacturing_desc(struct edgeport_serial *edge_serial) |
1da177e4 | 2651 | { |
984f6868 | 2652 | struct device *dev = &edge_serial->serial->dev->dev; |
1da177e4 LT |
2653 | int response; |
2654 | ||
984f6868 | 2655 | dev_dbg(dev, "getting manufacturer descriptor\n"); |
1da177e4 | 2656 | |
03f0dbf7 AC |
2657 | response = rom_read(edge_serial->serial, |
2658 | (EDGE_MANUF_DESC_ADDR & 0xffff0000) >> 16, | |
2659 | (__u16)(EDGE_MANUF_DESC_ADDR & 0x0000ffff), | |
2660 | EDGE_MANUF_DESC_LEN, | |
2661 | (__u8 *)(&edge_serial->manuf_descriptor)); | |
1da177e4 | 2662 | |
3c0e25d8 JH |
2663 | if (response < 0) { |
2664 | dev_err(dev, "error in getting manufacturer descriptor: %d\n", | |
2665 | response); | |
2666 | } else { | |
1da177e4 | 2667 | char string[30]; |
984f6868 GKH |
2668 | dev_dbg(dev, "**Manufacturer Descriptor\n"); |
2669 | dev_dbg(dev, " RomSize: %dK\n", | |
03f0dbf7 | 2670 | edge_serial->manuf_descriptor.RomSize); |
984f6868 | 2671 | dev_dbg(dev, " RamSize: %dK\n", |
03f0dbf7 | 2672 | edge_serial->manuf_descriptor.RamSize); |
984f6868 | 2673 | dev_dbg(dev, " CpuRev: %d\n", |
03f0dbf7 | 2674 | edge_serial->manuf_descriptor.CpuRev); |
984f6868 | 2675 | dev_dbg(dev, " BoardRev: %d\n", |
03f0dbf7 | 2676 | edge_serial->manuf_descriptor.BoardRev); |
984f6868 | 2677 | dev_dbg(dev, " NumPorts: %d\n", |
03f0dbf7 | 2678 | edge_serial->manuf_descriptor.NumPorts); |
984f6868 | 2679 | dev_dbg(dev, " DescDate: %d/%d/%d\n", |
03f0dbf7 AC |
2680 | edge_serial->manuf_descriptor.DescDate[0], |
2681 | edge_serial->manuf_descriptor.DescDate[1], | |
2682 | edge_serial->manuf_descriptor.DescDate[2]+1900); | |
4bc203d9 | 2683 | unicode_to_ascii(string, sizeof(string), |
03f0dbf7 AC |
2684 | edge_serial->manuf_descriptor.SerialNumber, |
2685 | edge_serial->manuf_descriptor.SerNumLength/2); | |
984f6868 | 2686 | dev_dbg(dev, " SerialNumber: %s\n", string); |
4bc203d9 | 2687 | unicode_to_ascii(string, sizeof(string), |
03f0dbf7 AC |
2688 | edge_serial->manuf_descriptor.AssemblyNumber, |
2689 | edge_serial->manuf_descriptor.AssemblyNumLength/2); | |
984f6868 | 2690 | dev_dbg(dev, " AssemblyNumber: %s\n", string); |
4bc203d9 | 2691 | unicode_to_ascii(string, sizeof(string), |
ad93375a PZ |
2692 | edge_serial->manuf_descriptor.OemAssyNumber, |
2693 | edge_serial->manuf_descriptor.OemAssyNumLength/2); | |
984f6868 GKH |
2694 | dev_dbg(dev, " OemAssyNumber: %s\n", string); |
2695 | dev_dbg(dev, " UartType: %d\n", | |
03f0dbf7 | 2696 | edge_serial->manuf_descriptor.UartType); |
984f6868 | 2697 | dev_dbg(dev, " IonPid: %d\n", |
03f0dbf7 | 2698 | edge_serial->manuf_descriptor.IonPid); |
984f6868 | 2699 | dev_dbg(dev, " IonConfig: %d\n", |
03f0dbf7 | 2700 | edge_serial->manuf_descriptor.IonConfig); |
1da177e4 LT |
2701 | } |
2702 | } | |
2703 | ||
2704 | ||
2705 | /**************************************************************************** | |
2706 | * get_boot_desc | |
03f0dbf7 | 2707 | * reads in the bootloader descriptor and stores it into the serial |
1da177e4 LT |
2708 | * structure. |
2709 | ****************************************************************************/ | |
03f0dbf7 | 2710 | static void get_boot_desc(struct edgeport_serial *edge_serial) |
1da177e4 | 2711 | { |
984f6868 | 2712 | struct device *dev = &edge_serial->serial->dev->dev; |
1da177e4 LT |
2713 | int response; |
2714 | ||
984f6868 | 2715 | dev_dbg(dev, "getting boot descriptor\n"); |
1da177e4 | 2716 | |
03f0dbf7 AC |
2717 | response = rom_read(edge_serial->serial, |
2718 | (EDGE_BOOT_DESC_ADDR & 0xffff0000) >> 16, | |
2719 | (__u16)(EDGE_BOOT_DESC_ADDR & 0x0000ffff), | |
2720 | EDGE_BOOT_DESC_LEN, | |
2721 | (__u8 *)(&edge_serial->boot_descriptor)); | |
1da177e4 | 2722 | |
3c0e25d8 JH |
2723 | if (response < 0) { |
2724 | dev_err(dev, "error in getting boot descriptor: %d\n", | |
2725 | response); | |
2726 | } else { | |
984f6868 GKH |
2727 | dev_dbg(dev, "**Boot Descriptor:\n"); |
2728 | dev_dbg(dev, " BootCodeLength: %d\n", | |
2729 | le16_to_cpu(edge_serial->boot_descriptor.BootCodeLength)); | |
2730 | dev_dbg(dev, " MajorVersion: %d\n", | |
03f0dbf7 | 2731 | edge_serial->boot_descriptor.MajorVersion); |
984f6868 | 2732 | dev_dbg(dev, " MinorVersion: %d\n", |
03f0dbf7 | 2733 | edge_serial->boot_descriptor.MinorVersion); |
984f6868 | 2734 | dev_dbg(dev, " BuildNumber: %d\n", |
03f0dbf7 | 2735 | le16_to_cpu(edge_serial->boot_descriptor.BuildNumber)); |
984f6868 | 2736 | dev_dbg(dev, " Capabilities: 0x%x\n", |
03f0dbf7 | 2737 | le16_to_cpu(edge_serial->boot_descriptor.Capabilities)); |
984f6868 | 2738 | dev_dbg(dev, " UConfig0: %d\n", |
03f0dbf7 | 2739 | edge_serial->boot_descriptor.UConfig0); |
984f6868 | 2740 | dev_dbg(dev, " UConfig1: %d\n", |
03f0dbf7 | 2741 | edge_serial->boot_descriptor.UConfig1); |
1da177e4 LT |
2742 | } |
2743 | } | |
2744 | ||
2745 | ||
2746 | /**************************************************************************** | |
2747 | * load_application_firmware | |
2748 | * This is called to load the application firmware to the device | |
2749 | ****************************************************************************/ | |
03f0dbf7 | 2750 | static void load_application_firmware(struct edgeport_serial *edge_serial) |
1da177e4 | 2751 | { |
984f6868 | 2752 | struct device *dev = &edge_serial->serial->dev->dev; |
5b9ea932 JS |
2753 | const struct ihex_binrec *rec; |
2754 | const struct firmware *fw; | |
2755 | const char *fw_name; | |
2756 | const char *fw_info; | |
1da177e4 | 2757 | int response; |
5b9ea932 JS |
2758 | __u32 Operaddr; |
2759 | __u16 build; | |
1da177e4 LT |
2760 | |
2761 | switch (edge_serial->product_info.iDownloadFile) { | |
2762 | case EDGE_DOWNLOAD_FILE_I930: | |
5b9ea932 JS |
2763 | fw_info = "downloading firmware version (930)"; |
2764 | fw_name = "edgeport/down.fw"; | |
1da177e4 LT |
2765 | break; |
2766 | ||
2767 | case EDGE_DOWNLOAD_FILE_80251: | |
5b9ea932 JS |
2768 | fw_info = "downloading firmware version (80251)"; |
2769 | fw_name = "edgeport/down2.fw"; | |
1da177e4 LT |
2770 | break; |
2771 | ||
2772 | case EDGE_DOWNLOAD_FILE_NONE: | |
984f6868 | 2773 | dev_dbg(dev, "No download file specified, skipping download\n"); |
1da177e4 LT |
2774 | return; |
2775 | ||
2776 | default: | |
2777 | return; | |
2778 | } | |
2779 | ||
5b9ea932 JS |
2780 | response = request_ihex_firmware(&fw, fw_name, |
2781 | &edge_serial->serial->dev->dev); | |
2782 | if (response) { | |
984f6868 | 2783 | dev_err(dev, "Failed to load image \"%s\" err %d\n", |
5b9ea932 JS |
2784 | fw_name, response); |
2785 | return; | |
2786 | } | |
2787 | ||
2788 | rec = (const struct ihex_binrec *)fw->data; | |
2789 | build = (rec->data[2] << 8) | rec->data[3]; | |
2790 | ||
984f6868 | 2791 | dev_dbg(dev, "%s %d.%d.%d\n", fw_info, rec->data[0], rec->data[1], build); |
5b9ea932 | 2792 | |
271c1150 BM |
2793 | edge_serial->product_info.FirmwareMajorVersion = rec->data[0]; |
2794 | edge_serial->product_info.FirmwareMinorVersion = rec->data[1]; | |
5b9ea932 | 2795 | edge_serial->product_info.FirmwareBuildNumber = cpu_to_le16(build); |
1da177e4 | 2796 | |
5b9ea932 JS |
2797 | for (rec = ihex_next_binrec(rec); rec; |
2798 | rec = ihex_next_binrec(rec)) { | |
2799 | Operaddr = be32_to_cpu(rec->addr); | |
2800 | response = sram_write(edge_serial->serial, | |
2801 | Operaddr >> 16, | |
2802 | Operaddr & 0xFFFF, | |
2803 | be16_to_cpu(rec->len), | |
2804 | &rec->data[0]); | |
1da177e4 | 2805 | if (response < 0) { |
5b9ea932 JS |
2806 | dev_err(&edge_serial->serial->dev->dev, |
2807 | "sram_write failed (%x, %x, %d)\n", | |
2808 | Operaddr >> 16, Operaddr & 0xFFFF, | |
2809 | be16_to_cpu(rec->len)); | |
1da177e4 LT |
2810 | break; |
2811 | } | |
2812 | } | |
2813 | ||
984f6868 GKH |
2814 | dev_dbg(dev, "sending exec_dl_code\n"); |
2815 | response = usb_control_msg (edge_serial->serial->dev, | |
2816 | usb_sndctrlpipe(edge_serial->serial->dev, 0), | |
2817 | USB_REQUEST_ION_EXEC_DL_CODE, | |
1da177e4 LT |
2818 | 0x40, 0x4000, 0x0001, NULL, 0, 3000); |
2819 | ||
5b9ea932 | 2820 | release_firmware(fw); |
1da177e4 LT |
2821 | } |
2822 | ||
2823 | ||
2824 | /**************************************************************************** | |
2825 | * edge_startup | |
2826 | ****************************************************************************/ | |
03f0dbf7 | 2827 | static int edge_startup(struct usb_serial *serial) |
1da177e4 LT |
2828 | { |
2829 | struct edgeport_serial *edge_serial; | |
1da177e4 | 2830 | struct usb_device *dev; |
984f6868 | 2831 | struct device *ddev = &serial->dev->dev; |
c27f3efc | 2832 | int i; |
6e8cf775 | 2833 | int response; |
cb8eaa8b RK |
2834 | bool interrupt_in_found; |
2835 | bool bulk_in_found; | |
2836 | bool bulk_out_found; | |
4f37fa54 JH |
2837 | static const __u32 descriptor[3] = { EDGE_COMPATIBILITY_MASK0, |
2838 | EDGE_COMPATIBILITY_MASK1, | |
2839 | EDGE_COMPATIBILITY_MASK2 }; | |
1da177e4 LT |
2840 | |
2841 | dev = serial->dev; | |
2842 | ||
2843 | /* create our private serial structure */ | |
80b6ca48 | 2844 | edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL); |
10c642d0 | 2845 | if (!edge_serial) |
1da177e4 | 2846 | return -ENOMEM; |
10c642d0 | 2847 | |
1da177e4 LT |
2848 | spin_lock_init(&edge_serial->es_lock); |
2849 | edge_serial->serial = serial; | |
2850 | usb_set_serial_data(serial, edge_serial); | |
2851 | ||
2852 | /* get the name for the device from the device */ | |
f10718f5 | 2853 | i = usb_string(dev, dev->descriptor.iManufacturer, |
ad93375a | 2854 | &edge_serial->name[0], MAX_NAME_LEN+1); |
f10718f5 DC |
2855 | if (i < 0) |
2856 | i = 0; | |
ad93375a | 2857 | edge_serial->name[i++] = ' '; |
f10718f5 | 2858 | usb_string(dev, dev->descriptor.iProduct, |
ad93375a | 2859 | &edge_serial->name[i], MAX_NAME_LEN+2 - i); |
1da177e4 LT |
2860 | |
2861 | dev_info(&serial->dev->dev, "%s detected\n", edge_serial->name); | |
2862 | ||
6e8cf775 | 2863 | /* Read the epic descriptor */ |
e4457d97 | 2864 | if (get_epic_descriptor(edge_serial) < 0) { |
6e8cf775 GKH |
2865 | /* memcpy descriptor to Supports structures */ |
2866 | memcpy(&edge_serial->epic_descriptor.Supports, descriptor, | |
2867 | sizeof(struct edge_compatibility_bits)); | |
1da177e4 | 2868 | |
6e8cf775 | 2869 | /* get the manufacturing descriptor for this device */ |
03f0dbf7 | 2870 | get_manufacturing_desc(edge_serial); |
1da177e4 | 2871 | |
6e8cf775 | 2872 | /* get the boot descriptor */ |
03f0dbf7 | 2873 | get_boot_desc(edge_serial); |
6e8cf775 GKH |
2874 | |
2875 | get_product_info(edge_serial); | |
2876 | } | |
1da177e4 LT |
2877 | |
2878 | /* set the number of ports from the manufacturing description */ | |
2879 | /* serial->num_ports = serial->product_info.NumPorts; */ | |
6e8cf775 GKH |
2880 | if ((!edge_serial->is_epic) && |
2881 | (edge_serial->product_info.NumPorts != serial->num_ports)) { | |
984f6868 GKH |
2882 | dev_warn(ddev, |
2883 | "Device Reported %d serial ports vs. core thinking we have %d ports, email greg@kroah.com this information.\n", | |
6e8cf775 GKH |
2884 | edge_serial->product_info.NumPorts, |
2885 | serial->num_ports); | |
1da177e4 LT |
2886 | } |
2887 | ||
984f6868 | 2888 | dev_dbg(ddev, "%s - time 1 %ld\n", __func__, jiffies); |
1da177e4 | 2889 | |
6e8cf775 GKH |
2890 | /* If not an EPiC device */ |
2891 | if (!edge_serial->is_epic) { | |
2892 | /* now load the application firmware into this device */ | |
03f0dbf7 | 2893 | load_application_firmware(edge_serial); |
1da177e4 | 2894 | |
984f6868 | 2895 | dev_dbg(ddev, "%s - time 2 %ld\n", __func__, jiffies); |
1da177e4 | 2896 | |
6e8cf775 | 2897 | /* Check current Edgeport EEPROM and update if necessary */ |
03f0dbf7 | 2898 | update_edgeport_E2PROM(edge_serial); |
1da177e4 | 2899 | |
984f6868 | 2900 | dev_dbg(ddev, "%s - time 3 %ld\n", __func__, jiffies); |
6e8cf775 GKH |
2901 | |
2902 | /* set the configuration to use #1 */ | |
984f6868 | 2903 | /* dev_dbg(ddev, "set_configuration 1\n"); */ |
03f0dbf7 | 2904 | /* usb_set_configuration (dev, 1); */ |
6e8cf775 | 2905 | } |
984f6868 | 2906 | dev_dbg(ddev, " FirmwareMajorVersion %d.%d.%d\n", |
5b9ea932 JS |
2907 | edge_serial->product_info.FirmwareMajorVersion, |
2908 | edge_serial->product_info.FirmwareMinorVersion, | |
2909 | le16_to_cpu(edge_serial->product_info.FirmwareBuildNumber)); | |
1da177e4 | 2910 | |
03f0dbf7 | 2911 | /* we set up the pointers to the endpoints in the edge_open function, |
1da177e4 LT |
2912 | * as the structures aren't created yet. */ |
2913 | ||
6e8cf775 GKH |
2914 | response = 0; |
2915 | ||
2916 | if (edge_serial->is_epic) { | |
17e80317 JH |
2917 | struct usb_host_interface *alt; |
2918 | ||
2919 | alt = serial->interface->cur_altsetting; | |
2920 | ||
03f0dbf7 AC |
2921 | /* EPIC thing, set up our interrupt polling now and our read |
2922 | * urb, so that the device knows it really is connected. */ | |
cb8eaa8b | 2923 | interrupt_in_found = bulk_in_found = bulk_out_found = false; |
17e80317 | 2924 | for (i = 0; i < alt->desc.bNumEndpoints; ++i) { |
6e8cf775 GKH |
2925 | struct usb_endpoint_descriptor *endpoint; |
2926 | int buffer_size; | |
2927 | ||
17e80317 | 2928 | endpoint = &alt->endpoint[i].desc; |
29cc8897 | 2929 | buffer_size = usb_endpoint_maxp(endpoint); |
cb8eaa8b | 2930 | if (!interrupt_in_found && |
6e8cf775 GKH |
2931 | (usb_endpoint_is_int_in(endpoint))) { |
2932 | /* we found a interrupt in endpoint */ | |
984f6868 | 2933 | dev_dbg(ddev, "found interrupt in\n"); |
6e8cf775 GKH |
2934 | |
2935 | /* not set up yet, so do it now */ | |
03f0dbf7 AC |
2936 | edge_serial->interrupt_read_urb = |
2937 | usb_alloc_urb(0, GFP_KERNEL); | |
c5c0c555 JH |
2938 | if (!edge_serial->interrupt_read_urb) { |
2939 | response = -ENOMEM; | |
2940 | break; | |
2941 | } | |
10c642d0 | 2942 | |
03f0dbf7 AC |
2943 | edge_serial->interrupt_in_buffer = |
2944 | kmalloc(buffer_size, GFP_KERNEL); | |
6e8cf775 | 2945 | if (!edge_serial->interrupt_in_buffer) { |
c5c0c555 JH |
2946 | response = -ENOMEM; |
2947 | break; | |
6e8cf775 | 2948 | } |
03f0dbf7 AC |
2949 | edge_serial->interrupt_in_endpoint = |
2950 | endpoint->bEndpointAddress; | |
6e8cf775 GKH |
2951 | |
2952 | /* set up our interrupt urb */ | |
03f0dbf7 AC |
2953 | usb_fill_int_urb( |
2954 | edge_serial->interrupt_read_urb, | |
2955 | dev, | |
2956 | usb_rcvintpipe(dev, | |
2957 | endpoint->bEndpointAddress), | |
2958 | edge_serial->interrupt_in_buffer, | |
2959 | buffer_size, | |
2960 | edge_interrupt_callback, | |
2961 | edge_serial, | |
2962 | endpoint->bInterval); | |
6e8cf775 | 2963 | |
cb8eaa8b | 2964 | interrupt_in_found = true; |
6e8cf775 GKH |
2965 | } |
2966 | ||
cb8eaa8b | 2967 | if (!bulk_in_found && |
03f0dbf7 | 2968 | (usb_endpoint_is_bulk_in(endpoint))) { |
6e8cf775 | 2969 | /* we found a bulk in endpoint */ |
984f6868 | 2970 | dev_dbg(ddev, "found bulk in\n"); |
6e8cf775 GKH |
2971 | |
2972 | /* not set up yet, so do it now */ | |
03f0dbf7 AC |
2973 | edge_serial->read_urb = |
2974 | usb_alloc_urb(0, GFP_KERNEL); | |
c5c0c555 JH |
2975 | if (!edge_serial->read_urb) { |
2976 | response = -ENOMEM; | |
2977 | break; | |
2978 | } | |
10c642d0 | 2979 | |
03f0dbf7 AC |
2980 | edge_serial->bulk_in_buffer = |
2981 | kmalloc(buffer_size, GFP_KERNEL); | |
6e8cf775 | 2982 | if (!edge_serial->bulk_in_buffer) { |
c5c0c555 JH |
2983 | response = -ENOMEM; |
2984 | break; | |
6e8cf775 | 2985 | } |
03f0dbf7 AC |
2986 | edge_serial->bulk_in_endpoint = |
2987 | endpoint->bEndpointAddress; | |
6e8cf775 GKH |
2988 | |
2989 | /* set up our bulk in urb */ | |
2990 | usb_fill_bulk_urb(edge_serial->read_urb, dev, | |
03f0dbf7 AC |
2991 | usb_rcvbulkpipe(dev, |
2992 | endpoint->bEndpointAddress), | |
2993 | edge_serial->bulk_in_buffer, | |
29cc8897 | 2994 | usb_endpoint_maxp(endpoint), |
03f0dbf7 AC |
2995 | edge_bulk_in_callback, |
2996 | edge_serial); | |
cb8eaa8b | 2997 | bulk_in_found = true; |
6e8cf775 GKH |
2998 | } |
2999 | ||
cb8eaa8b | 3000 | if (!bulk_out_found && |
6e8cf775 GKH |
3001 | (usb_endpoint_is_bulk_out(endpoint))) { |
3002 | /* we found a bulk out endpoint */ | |
984f6868 | 3003 | dev_dbg(ddev, "found bulk out\n"); |
03f0dbf7 AC |
3004 | edge_serial->bulk_out_endpoint = |
3005 | endpoint->bEndpointAddress; | |
cb8eaa8b | 3006 | bulk_out_found = true; |
6e8cf775 GKH |
3007 | } |
3008 | } | |
3009 | ||
c5c0c555 JH |
3010 | if (response || !interrupt_in_found || !bulk_in_found || |
3011 | !bulk_out_found) { | |
3012 | if (!response) { | |
3013 | dev_err(ddev, "expected endpoints not found\n"); | |
3014 | response = -ENODEV; | |
3015 | } | |
3016 | ||
3017 | usb_free_urb(edge_serial->interrupt_read_urb); | |
3018 | kfree(edge_serial->interrupt_in_buffer); | |
3019 | ||
3020 | usb_free_urb(edge_serial->read_urb); | |
3021 | kfree(edge_serial->bulk_in_buffer); | |
3022 | ||
3023 | kfree(edge_serial); | |
3024 | ||
3025 | return response; | |
6e8cf775 GKH |
3026 | } |
3027 | ||
3028 | /* start interrupt read for this edgeport this interrupt will | |
3029 | * continue as long as the edgeport is connected */ | |
03f0dbf7 AC |
3030 | response = usb_submit_urb(edge_serial->interrupt_read_urb, |
3031 | GFP_KERNEL); | |
6e8cf775 | 3032 | if (response) |
984f6868 | 3033 | dev_err(ddev, "%s - Error %d submitting control urb\n", |
194343d9 | 3034 | __func__, response); |
6e8cf775 GKH |
3035 | } |
3036 | return response; | |
1da177e4 LT |
3037 | } |
3038 | ||
3039 | ||
3040 | /**************************************************************************** | |
f9c99bb8 | 3041 | * edge_disconnect |
1da177e4 LT |
3042 | * This function is called whenever the device is removed from the usb bus. |
3043 | ****************************************************************************/ | |
f9c99bb8 | 3044 | static void edge_disconnect(struct usb_serial *serial) |
1da177e4 | 3045 | { |
6e8cf775 | 3046 | struct edgeport_serial *edge_serial = usb_get_serial_data(serial); |
1da177e4 | 3047 | |
6e8cf775 | 3048 | if (edge_serial->is_epic) { |
74ac07e8 | 3049 | usb_kill_urb(edge_serial->interrupt_read_urb); |
74ac07e8 | 3050 | usb_kill_urb(edge_serial->read_urb); |
6e8cf775 | 3051 | } |
f9c99bb8 AS |
3052 | } |
3053 | ||
3054 | ||
3055 | /**************************************************************************** | |
3056 | * edge_release | |
3057 | * This function is called when the device structure is deallocated. | |
3058 | ****************************************************************************/ | |
3059 | static void edge_release(struct usb_serial *serial) | |
3060 | { | |
3061 | struct edgeport_serial *edge_serial = usb_get_serial_data(serial); | |
6e8cf775 | 3062 | |
c8d62957 JH |
3063 | if (edge_serial->is_epic) { |
3064 | usb_kill_urb(edge_serial->interrupt_read_urb); | |
3065 | usb_free_urb(edge_serial->interrupt_read_urb); | |
3066 | kfree(edge_serial->interrupt_in_buffer); | |
3067 | ||
3068 | usb_kill_urb(edge_serial->read_urb); | |
3069 | usb_free_urb(edge_serial->read_urb); | |
3070 | kfree(edge_serial->bulk_in_buffer); | |
3071 | } | |
3072 | ||
6e8cf775 | 3073 | kfree(edge_serial); |
1da177e4 LT |
3074 | } |
3075 | ||
c27f3efc JH |
3076 | static int edge_port_probe(struct usb_serial_port *port) |
3077 | { | |
3078 | struct edgeport_port *edge_port; | |
3079 | ||
3080 | edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL); | |
3081 | if (!edge_port) | |
3082 | return -ENOMEM; | |
3083 | ||
3084 | spin_lock_init(&edge_port->ep_lock); | |
3085 | edge_port->port = port; | |
3086 | ||
3087 | usb_set_serial_port_data(port, edge_port); | |
3088 | ||
3089 | return 0; | |
3090 | } | |
3091 | ||
3092 | static int edge_port_remove(struct usb_serial_port *port) | |
3093 | { | |
3094 | struct edgeport_port *edge_port; | |
3095 | ||
3096 | edge_port = usb_get_serial_port_data(port); | |
3097 | kfree(edge_port); | |
3098 | ||
3099 | return 0; | |
3100 | } | |
3101 | ||
35d47976 JH |
3102 | static struct usb_serial_driver edgeport_2port_device = { |
3103 | .driver = { | |
3104 | .owner = THIS_MODULE, | |
3105 | .name = "edgeport_2", | |
3106 | }, | |
3107 | .description = "Edgeport 2 port adapter", | |
3108 | .id_table = edgeport_2port_id_table, | |
3109 | .num_ports = 2, | |
fd0c883e JH |
3110 | .num_bulk_in = 1, |
3111 | .num_bulk_out = 1, | |
3112 | .num_interrupt_in = 1, | |
35d47976 JH |
3113 | .open = edge_open, |
3114 | .close = edge_close, | |
3115 | .throttle = edge_throttle, | |
3116 | .unthrottle = edge_unthrottle, | |
3117 | .attach = edge_startup, | |
3118 | .disconnect = edge_disconnect, | |
3119 | .release = edge_release, | |
3120 | .port_probe = edge_port_probe, | |
3121 | .port_remove = edge_port_remove, | |
3122 | .ioctl = edge_ioctl, | |
3123 | .set_termios = edge_set_termios, | |
3124 | .tiocmget = edge_tiocmget, | |
3125 | .tiocmset = edge_tiocmset, | |
3126 | .tiocmiwait = usb_serial_generic_tiocmiwait, | |
3127 | .get_icount = usb_serial_generic_get_icount, | |
3128 | .write = edge_write, | |
3129 | .write_room = edge_write_room, | |
3130 | .chars_in_buffer = edge_chars_in_buffer, | |
3131 | .break_ctl = edge_break, | |
3132 | .read_int_callback = edge_interrupt_callback, | |
3133 | .read_bulk_callback = edge_bulk_in_callback, | |
3134 | .write_bulk_callback = edge_bulk_out_data_callback, | |
3135 | }; | |
3136 | ||
3137 | static struct usb_serial_driver edgeport_4port_device = { | |
3138 | .driver = { | |
3139 | .owner = THIS_MODULE, | |
3140 | .name = "edgeport_4", | |
3141 | }, | |
3142 | .description = "Edgeport 4 port adapter", | |
3143 | .id_table = edgeport_4port_id_table, | |
3144 | .num_ports = 4, | |
fd0c883e JH |
3145 | .num_bulk_in = 1, |
3146 | .num_bulk_out = 1, | |
3147 | .num_interrupt_in = 1, | |
35d47976 JH |
3148 | .open = edge_open, |
3149 | .close = edge_close, | |
3150 | .throttle = edge_throttle, | |
3151 | .unthrottle = edge_unthrottle, | |
3152 | .attach = edge_startup, | |
3153 | .disconnect = edge_disconnect, | |
3154 | .release = edge_release, | |
3155 | .port_probe = edge_port_probe, | |
3156 | .port_remove = edge_port_remove, | |
3157 | .ioctl = edge_ioctl, | |
3158 | .set_termios = edge_set_termios, | |
3159 | .tiocmget = edge_tiocmget, | |
3160 | .tiocmset = edge_tiocmset, | |
3161 | .tiocmiwait = usb_serial_generic_tiocmiwait, | |
3162 | .get_icount = usb_serial_generic_get_icount, | |
3163 | .write = edge_write, | |
3164 | .write_room = edge_write_room, | |
3165 | .chars_in_buffer = edge_chars_in_buffer, | |
3166 | .break_ctl = edge_break, | |
3167 | .read_int_callback = edge_interrupt_callback, | |
3168 | .read_bulk_callback = edge_bulk_in_callback, | |
3169 | .write_bulk_callback = edge_bulk_out_data_callback, | |
3170 | }; | |
3171 | ||
3172 | static struct usb_serial_driver edgeport_8port_device = { | |
3173 | .driver = { | |
3174 | .owner = THIS_MODULE, | |
3175 | .name = "edgeport_8", | |
3176 | }, | |
3177 | .description = "Edgeport 8 port adapter", | |
3178 | .id_table = edgeport_8port_id_table, | |
3179 | .num_ports = 8, | |
fd0c883e JH |
3180 | .num_bulk_in = 1, |
3181 | .num_bulk_out = 1, | |
3182 | .num_interrupt_in = 1, | |
35d47976 JH |
3183 | .open = edge_open, |
3184 | .close = edge_close, | |
3185 | .throttle = edge_throttle, | |
3186 | .unthrottle = edge_unthrottle, | |
3187 | .attach = edge_startup, | |
3188 | .disconnect = edge_disconnect, | |
3189 | .release = edge_release, | |
3190 | .port_probe = edge_port_probe, | |
3191 | .port_remove = edge_port_remove, | |
3192 | .ioctl = edge_ioctl, | |
3193 | .set_termios = edge_set_termios, | |
3194 | .tiocmget = edge_tiocmget, | |
3195 | .tiocmset = edge_tiocmset, | |
3196 | .tiocmiwait = usb_serial_generic_tiocmiwait, | |
3197 | .get_icount = usb_serial_generic_get_icount, | |
3198 | .write = edge_write, | |
3199 | .write_room = edge_write_room, | |
3200 | .chars_in_buffer = edge_chars_in_buffer, | |
3201 | .break_ctl = edge_break, | |
3202 | .read_int_callback = edge_interrupt_callback, | |
3203 | .read_bulk_callback = edge_bulk_in_callback, | |
3204 | .write_bulk_callback = edge_bulk_out_data_callback, | |
3205 | }; | |
3206 | ||
3207 | static struct usb_serial_driver epic_device = { | |
3208 | .driver = { | |
3209 | .owner = THIS_MODULE, | |
3210 | .name = "epic", | |
3211 | }, | |
3212 | .description = "EPiC device", | |
3213 | .id_table = Epic_port_id_table, | |
3214 | .num_ports = 1, | |
fd0c883e JH |
3215 | .num_bulk_in = 1, |
3216 | .num_bulk_out = 1, | |
3217 | .num_interrupt_in = 1, | |
35d47976 JH |
3218 | .open = edge_open, |
3219 | .close = edge_close, | |
3220 | .throttle = edge_throttle, | |
3221 | .unthrottle = edge_unthrottle, | |
3222 | .attach = edge_startup, | |
3223 | .disconnect = edge_disconnect, | |
3224 | .release = edge_release, | |
3225 | .port_probe = edge_port_probe, | |
3226 | .port_remove = edge_port_remove, | |
3227 | .ioctl = edge_ioctl, | |
3228 | .set_termios = edge_set_termios, | |
3229 | .tiocmget = edge_tiocmget, | |
3230 | .tiocmset = edge_tiocmset, | |
3231 | .tiocmiwait = usb_serial_generic_tiocmiwait, | |
3232 | .get_icount = usb_serial_generic_get_icount, | |
3233 | .write = edge_write, | |
3234 | .write_room = edge_write_room, | |
3235 | .chars_in_buffer = edge_chars_in_buffer, | |
3236 | .break_ctl = edge_break, | |
3237 | .read_int_callback = edge_interrupt_callback, | |
3238 | .read_bulk_callback = edge_bulk_in_callback, | |
3239 | .write_bulk_callback = edge_bulk_out_data_callback, | |
3240 | }; | |
3241 | ||
3242 | static struct usb_serial_driver * const serial_drivers[] = { | |
3243 | &edgeport_2port_device, &edgeport_4port_device, | |
3244 | &edgeport_8port_device, &epic_device, NULL | |
3245 | }; | |
3246 | ||
68e24113 | 3247 | module_usb_serial_driver(serial_drivers, id_table_combined); |
1da177e4 | 3248 | |
03f0dbf7 AC |
3249 | MODULE_AUTHOR(DRIVER_AUTHOR); |
3250 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 | 3251 | MODULE_LICENSE("GPL"); |
5b9ea932 JS |
3252 | MODULE_FIRMWARE("edgeport/boot.fw"); |
3253 | MODULE_FIRMWARE("edgeport/boot2.fw"); | |
3254 | MODULE_FIRMWARE("edgeport/down.fw"); | |
3255 | MODULE_FIRMWARE("edgeport/down2.fw"); |