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88095e7b TO |
1 | /* |
2 | * Remote VUB300 SDIO/SDmem Host Controller Driver | |
3 | * | |
4 | * Copyright (C) 2010 Elan Digital Systems Limited | |
5 | * | |
6 | * based on USB Skeleton driver - 2.2 | |
7 | * | |
8 | * Copyright (C) 2001-2004 Greg Kroah-Hartman (greg@kroah.com) | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU General Public License as | |
12 | * published by the Free Software Foundation, version 2 | |
13 | * | |
14 | * VUB300: is a USB 2.0 client device with a single SDIO/SDmem/MMC slot | |
15 | * Any SDIO/SDmem/MMC device plugged into the VUB300 will appear, | |
16 | * by virtue of this driver, to have been plugged into a local | |
17 | * SDIO host controller, similar to, say, a PCI Ricoh controller | |
18 | * This is because this kernel device driver is both a USB 2.0 | |
19 | * client device driver AND an MMC host controller driver. Thus | |
20 | * if there is an existing driver for the inserted SDIO/SDmem/MMC | |
21 | * device then that driver will be used by the kernel to manage | |
22 | * the device in exactly the same fashion as if it had been | |
23 | * directly plugged into, say, a local pci bus Ricoh controller | |
24 | * | |
25 | * RANT: this driver was written using a display 128x48 - converting it | |
26 | * to a line width of 80 makes it very difficult to support. In | |
27 | * particular functions have been broken down into sub functions | |
28 | * and the original meaningful names have been shortened into | |
29 | * cryptic ones. | |
30 | * The problem is that executing a fragment of code subject to | |
31 | * two conditions means an indentation of 24, thus leaving only | |
32 | * 56 characters for a C statement. And that is quite ridiculous! | |
33 | * | |
34 | * Data types: data passed to/from the VUB300 is fixed to a number of | |
35 | * bits and driver data fields reflect that limit by using | |
36 | * u8, u16, u32 | |
37 | */ | |
38 | #include <linux/kernel.h> | |
39 | #include <linux/errno.h> | |
40 | #include <linux/init.h> | |
41 | #include <linux/slab.h> | |
42 | #include <linux/module.h> | |
43 | #include <linux/kref.h> | |
44 | #include <linux/uaccess.h> | |
45 | #include <linux/usb.h> | |
46 | #include <linux/mutex.h> | |
47 | #include <linux/mmc/host.h> | |
48 | #include <linux/mmc/card.h> | |
49 | #include <linux/mmc/sdio_func.h> | |
50 | #include <linux/mmc/sdio_ids.h> | |
51 | #include <linux/workqueue.h> | |
52 | #include <linux/ctype.h> | |
53 | #include <linux/firmware.h> | |
54 | #include <linux/scatterlist.h> | |
55 | ||
56 | struct host_controller_info { | |
57 | u8 info_size; | |
58 | u16 firmware_version; | |
59 | u8 number_of_ports; | |
60 | } __packed; | |
61 | ||
62 | #define FIRMWARE_BLOCK_BOUNDARY 1024 | |
63 | struct sd_command_header { | |
64 | u8 header_size; | |
65 | u8 header_type; | |
66 | u8 port_number; | |
67 | u8 command_type; /* Bit7 - Rd/Wr */ | |
68 | u8 command_index; | |
69 | u8 transfer_size[4]; /* ReadSize + ReadSize */ | |
70 | u8 response_type; | |
71 | u8 arguments[4]; | |
72 | u8 block_count[2]; | |
73 | u8 block_size[2]; | |
74 | u8 block_boundary[2]; | |
75 | u8 reserved[44]; /* to pad out to 64 bytes */ | |
76 | } __packed; | |
77 | ||
78 | struct sd_irqpoll_header { | |
79 | u8 header_size; | |
80 | u8 header_type; | |
81 | u8 port_number; | |
82 | u8 command_type; /* Bit7 - Rd/Wr */ | |
83 | u8 padding[16]; /* don't ask why !! */ | |
84 | u8 poll_timeout_msb; | |
85 | u8 poll_timeout_lsb; | |
86 | u8 reserved[42]; /* to pad out to 64 bytes */ | |
87 | } __packed; | |
88 | ||
89 | struct sd_common_header { | |
90 | u8 header_size; | |
91 | u8 header_type; | |
92 | u8 port_number; | |
93 | } __packed; | |
94 | ||
95 | struct sd_response_header { | |
96 | u8 header_size; | |
97 | u8 header_type; | |
98 | u8 port_number; | |
99 | u8 command_type; | |
100 | u8 command_index; | |
101 | u8 command_response[0]; | |
102 | } __packed; | |
103 | ||
104 | struct sd_status_header { | |
105 | u8 header_size; | |
106 | u8 header_type; | |
107 | u8 port_number; | |
108 | u16 port_flags; | |
109 | u32 sdio_clock; | |
110 | u16 host_header_size; | |
111 | u16 func_header_size; | |
112 | u16 ctrl_header_size; | |
113 | } __packed; | |
114 | ||
115 | struct sd_error_header { | |
116 | u8 header_size; | |
117 | u8 header_type; | |
118 | u8 port_number; | |
119 | u8 error_code; | |
120 | } __packed; | |
121 | ||
122 | struct sd_interrupt_header { | |
123 | u8 header_size; | |
124 | u8 header_type; | |
125 | u8 port_number; | |
126 | } __packed; | |
127 | ||
128 | struct offload_registers_access { | |
129 | u8 command_byte[4]; | |
130 | u8 Respond_Byte[4]; | |
131 | } __packed; | |
132 | ||
133 | #define INTERRUPT_REGISTER_ACCESSES 15 | |
134 | struct sd_offloaded_interrupt { | |
135 | u8 header_size; | |
136 | u8 header_type; | |
137 | u8 port_number; | |
138 | struct offload_registers_access reg[INTERRUPT_REGISTER_ACCESSES]; | |
139 | } __packed; | |
140 | ||
141 | struct sd_register_header { | |
142 | u8 header_size; | |
143 | u8 header_type; | |
144 | u8 port_number; | |
145 | u8 command_type; | |
146 | u8 command_index; | |
147 | u8 command_response[6]; | |
148 | } __packed; | |
149 | ||
150 | #define PIGGYBACK_REGISTER_ACCESSES 14 | |
151 | struct sd_offloaded_piggyback { | |
152 | struct sd_register_header sdio; | |
153 | struct offload_registers_access reg[PIGGYBACK_REGISTER_ACCESSES]; | |
154 | } __packed; | |
155 | ||
156 | union sd_response { | |
157 | struct sd_common_header common; | |
158 | struct sd_status_header status; | |
159 | struct sd_error_header error; | |
160 | struct sd_interrupt_header interrupt; | |
161 | struct sd_response_header response; | |
162 | struct sd_offloaded_interrupt irq; | |
163 | struct sd_offloaded_piggyback pig; | |
164 | } __packed; | |
165 | ||
166 | union sd_command { | |
167 | struct sd_command_header head; | |
168 | struct sd_irqpoll_header poll; | |
169 | } __packed; | |
170 | ||
171 | enum SD_RESPONSE_TYPE { | |
172 | SDRT_UNSPECIFIED = 0, | |
173 | SDRT_NONE, | |
174 | SDRT_1, | |
175 | SDRT_1B, | |
176 | SDRT_2, | |
177 | SDRT_3, | |
178 | SDRT_4, | |
179 | SDRT_5, | |
180 | SDRT_5B, | |
181 | SDRT_6, | |
182 | SDRT_7, | |
183 | }; | |
184 | ||
185 | #define RESPONSE_INTERRUPT 0x01 | |
186 | #define RESPONSE_ERROR 0x02 | |
187 | #define RESPONSE_STATUS 0x03 | |
188 | #define RESPONSE_IRQ_DISABLED 0x05 | |
189 | #define RESPONSE_IRQ_ENABLED 0x06 | |
190 | #define RESPONSE_PIGGYBACKED 0x07 | |
191 | #define RESPONSE_NO_INTERRUPT 0x08 | |
192 | #define RESPONSE_PIG_DISABLED 0x09 | |
193 | #define RESPONSE_PIG_ENABLED 0x0A | |
194 | #define SD_ERROR_1BIT_TIMEOUT 0x01 | |
195 | #define SD_ERROR_4BIT_TIMEOUT 0x02 | |
196 | #define SD_ERROR_1BIT_CRC_WRONG 0x03 | |
197 | #define SD_ERROR_4BIT_CRC_WRONG 0x04 | |
198 | #define SD_ERROR_1BIT_CRC_ERROR 0x05 | |
199 | #define SD_ERROR_4BIT_CRC_ERROR 0x06 | |
200 | #define SD_ERROR_NO_CMD_ENDBIT 0x07 | |
201 | #define SD_ERROR_NO_1BIT_DATEND 0x08 | |
202 | #define SD_ERROR_NO_4BIT_DATEND 0x09 | |
203 | #define SD_ERROR_1BIT_UNEXPECTED_TIMEOUT 0x0A | |
204 | #define SD_ERROR_4BIT_UNEXPECTED_TIMEOUT 0x0B | |
205 | #define SD_ERROR_ILLEGAL_COMMAND 0x0C | |
206 | #define SD_ERROR_NO_DEVICE 0x0D | |
207 | #define SD_ERROR_TRANSFER_LENGTH 0x0E | |
208 | #define SD_ERROR_1BIT_DATA_TIMEOUT 0x0F | |
209 | #define SD_ERROR_4BIT_DATA_TIMEOUT 0x10 | |
210 | #define SD_ERROR_ILLEGAL_STATE 0x11 | |
211 | #define SD_ERROR_UNKNOWN_ERROR 0x12 | |
212 | #define SD_ERROR_RESERVED_ERROR 0x13 | |
213 | #define SD_ERROR_INVALID_FUNCTION 0x14 | |
214 | #define SD_ERROR_OUT_OF_RANGE 0x15 | |
215 | #define SD_ERROR_STAT_CMD 0x16 | |
216 | #define SD_ERROR_STAT_DATA 0x17 | |
217 | #define SD_ERROR_STAT_CMD_TIMEOUT 0x18 | |
218 | #define SD_ERROR_SDCRDY_STUCK 0x19 | |
219 | #define SD_ERROR_UNHANDLED 0x1A | |
220 | #define SD_ERROR_OVERRUN 0x1B | |
221 | #define SD_ERROR_PIO_TIMEOUT 0x1C | |
222 | ||
223 | #define FUN(c) (0x000007 & (c->arg>>28)) | |
224 | #define REG(c) (0x01FFFF & (c->arg>>9)) | |
225 | ||
90ab5ee9 | 226 | static bool limit_speed_to_24_MHz; |
88095e7b TO |
227 | module_param(limit_speed_to_24_MHz, bool, 0644); |
228 | MODULE_PARM_DESC(limit_speed_to_24_MHz, "Limit Max SDIO Clock Speed to 24 MHz"); | |
229 | ||
90ab5ee9 | 230 | static bool pad_input_to_usb_pkt; |
88095e7b TO |
231 | module_param(pad_input_to_usb_pkt, bool, 0644); |
232 | MODULE_PARM_DESC(pad_input_to_usb_pkt, | |
233 | "Pad USB data input transfers to whole USB Packet"); | |
234 | ||
90ab5ee9 | 235 | static bool disable_offload_processing; |
88095e7b TO |
236 | module_param(disable_offload_processing, bool, 0644); |
237 | MODULE_PARM_DESC(disable_offload_processing, "Disable Offload Processing"); | |
238 | ||
90ab5ee9 | 239 | static bool force_1_bit_data_xfers; |
88095e7b TO |
240 | module_param(force_1_bit_data_xfers, bool, 0644); |
241 | MODULE_PARM_DESC(force_1_bit_data_xfers, | |
242 | "Force SDIO Data Transfers to 1-bit Mode"); | |
243 | ||
90ab5ee9 | 244 | static bool force_polling_for_irqs; |
88095e7b TO |
245 | module_param(force_polling_for_irqs, bool, 0644); |
246 | MODULE_PARM_DESC(force_polling_for_irqs, "Force Polling for SDIO interrupts"); | |
247 | ||
248 | static int firmware_irqpoll_timeout = 1024; | |
249 | module_param(firmware_irqpoll_timeout, int, 0644); | |
250 | MODULE_PARM_DESC(firmware_irqpoll_timeout, "VUB300 firmware irqpoll timeout"); | |
251 | ||
252 | static int force_max_req_size = 128; | |
253 | module_param(force_max_req_size, int, 0644); | |
254 | MODULE_PARM_DESC(force_max_req_size, "set max request size in kBytes"); | |
255 | ||
256 | #ifdef SMSC_DEVELOPMENT_BOARD | |
257 | static int firmware_rom_wait_states = 0x04; | |
258 | #else | |
259 | static int firmware_rom_wait_states = 0x1C; | |
260 | #endif | |
261 | ||
61074287 | 262 | module_param(firmware_rom_wait_states, int, 0644); |
88095e7b TO |
263 | MODULE_PARM_DESC(firmware_rom_wait_states, |
264 | "ROM wait states byte=RRRIIEEE (Reserved Internal External)"); | |
265 | ||
266 | #define ELAN_VENDOR_ID 0x2201 | |
267 | #define VUB300_VENDOR_ID 0x0424 | |
268 | #define VUB300_PRODUCT_ID 0x012C | |
269 | static struct usb_device_id vub300_table[] = { | |
270 | {USB_DEVICE(ELAN_VENDOR_ID, VUB300_PRODUCT_ID)}, | |
271 | {USB_DEVICE(VUB300_VENDOR_ID, VUB300_PRODUCT_ID)}, | |
272 | {} /* Terminating entry */ | |
273 | }; | |
274 | MODULE_DEVICE_TABLE(usb, vub300_table); | |
275 | ||
276 | static struct workqueue_struct *cmndworkqueue; | |
277 | static struct workqueue_struct *pollworkqueue; | |
278 | static struct workqueue_struct *deadworkqueue; | |
279 | ||
280 | static inline int interface_to_InterfaceNumber(struct usb_interface *interface) | |
281 | { | |
282 | if (!interface) | |
283 | return -1; | |
284 | if (!interface->cur_altsetting) | |
285 | return -1; | |
286 | return interface->cur_altsetting->desc.bInterfaceNumber; | |
287 | } | |
288 | ||
289 | struct sdio_register { | |
290 | unsigned func_num:3; | |
291 | unsigned sdio_reg:17; | |
292 | unsigned activate:1; | |
293 | unsigned prepared:1; | |
294 | unsigned regvalue:8; | |
295 | unsigned response:8; | |
296 | unsigned sparebit:26; | |
297 | }; | |
298 | ||
299 | struct vub300_mmc_host { | |
300 | struct usb_device *udev; | |
301 | struct usb_interface *interface; | |
302 | struct kref kref; | |
303 | struct mutex cmd_mutex; | |
304 | struct mutex irq_mutex; | |
305 | char vub_name[3 + (9 * 8) + 4 + 1]; /* max of 7 sdio fn's */ | |
306 | u8 cmnd_out_ep; /* EndPoint for commands */ | |
307 | u8 cmnd_res_ep; /* EndPoint for responses */ | |
308 | u8 data_out_ep; /* EndPoint for out data */ | |
309 | u8 data_inp_ep; /* EndPoint for inp data */ | |
310 | bool card_powered; | |
311 | bool card_present; | |
312 | bool read_only; | |
313 | bool large_usb_packets; | |
314 | bool app_spec; /* ApplicationSpecific */ | |
315 | bool irq_enabled; /* by the MMC CORE */ | |
316 | bool irq_disabled; /* in the firmware */ | |
317 | unsigned bus_width:4; | |
318 | u8 total_offload_count; | |
319 | u8 dynamic_register_count; | |
320 | u8 resp_len; | |
321 | u32 datasize; | |
322 | int errors; | |
323 | int usb_transport_fail; | |
324 | int usb_timed_out; | |
325 | int irqs_queued; | |
326 | struct sdio_register sdio_register[16]; | |
327 | struct offload_interrupt_function_register { | |
328 | #define MAXREGBITS 4 | |
329 | #define MAXREGS (1<<MAXREGBITS) | |
330 | #define MAXREGMASK (MAXREGS-1) | |
331 | u8 offload_count; | |
332 | u32 offload_point; | |
333 | struct offload_registers_access reg[MAXREGS]; | |
334 | } fn[8]; | |
335 | u16 fbs[8]; /* Function Block Size */ | |
336 | struct mmc_command *cmd; | |
337 | struct mmc_request *req; | |
338 | struct mmc_data *data; | |
339 | struct mmc_host *mmc; | |
340 | struct urb *urb; | |
341 | struct urb *command_out_urb; | |
342 | struct urb *command_res_urb; | |
343 | struct completion command_complete; | |
344 | struct completion irqpoll_complete; | |
345 | union sd_command cmnd; | |
346 | union sd_response resp; | |
347 | struct timer_list sg_transfer_timer; | |
348 | struct usb_sg_request sg_request; | |
349 | struct timer_list inactivity_timer; | |
350 | struct work_struct deadwork; | |
351 | struct work_struct cmndwork; | |
352 | struct delayed_work pollwork; | |
353 | struct host_controller_info hc_info; | |
354 | struct sd_status_header system_port_status; | |
355 | u8 padded_buffer[64]; | |
356 | }; | |
357 | ||
358 | #define kref_to_vub300_mmc_host(d) container_of(d, struct vub300_mmc_host, kref) | |
359 | #define SET_TRANSFER_PSEUDOCODE 21 | |
360 | #define SET_INTERRUPT_PSEUDOCODE 20 | |
361 | #define SET_FAILURE_MODE 18 | |
362 | #define SET_ROM_WAIT_STATES 16 | |
363 | #define SET_IRQ_ENABLE 13 | |
364 | #define SET_CLOCK_SPEED 11 | |
365 | #define SET_FUNCTION_BLOCK_SIZE 9 | |
366 | #define SET_SD_DATA_MODE 6 | |
367 | #define SET_SD_POWER 4 | |
368 | #define ENTER_DFU_MODE 3 | |
369 | #define GET_HC_INF0 1 | |
370 | #define GET_SYSTEM_PORT_STATUS 0 | |
371 | ||
372 | static void vub300_delete(struct kref *kref) | |
373 | { /* kref callback - softirq */ | |
374 | struct vub300_mmc_host *vub300 = kref_to_vub300_mmc_host(kref); | |
375 | struct mmc_host *mmc = vub300->mmc; | |
376 | usb_free_urb(vub300->command_out_urb); | |
377 | vub300->command_out_urb = NULL; | |
378 | usb_free_urb(vub300->command_res_urb); | |
379 | vub300->command_res_urb = NULL; | |
380 | usb_put_dev(vub300->udev); | |
381 | mmc_free_host(mmc); | |
382 | /* | |
383 | * and hence also frees vub300 | |
384 | * which is contained at the end of struct mmc | |
385 | */ | |
386 | } | |
387 | ||
388 | static void vub300_queue_cmnd_work(struct vub300_mmc_host *vub300) | |
389 | { | |
390 | kref_get(&vub300->kref); | |
391 | if (queue_work(cmndworkqueue, &vub300->cmndwork)) { | |
392 | /* | |
393 | * then the cmndworkqueue was not previously | |
394 | * running and the above get ref is obvious | |
395 | * required and will be put when the thread | |
396 | * terminates by a specific call | |
397 | */ | |
398 | } else { | |
399 | /* | |
400 | * the cmndworkqueue was already running from | |
401 | * a previous invocation and thus to keep the | |
402 | * kref counts correct we must undo the get | |
403 | */ | |
404 | kref_put(&vub300->kref, vub300_delete); | |
405 | } | |
406 | } | |
407 | ||
408 | static void vub300_queue_poll_work(struct vub300_mmc_host *vub300, int delay) | |
409 | { | |
410 | kref_get(&vub300->kref); | |
411 | if (queue_delayed_work(pollworkqueue, &vub300->pollwork, delay)) { | |
412 | /* | |
413 | * then the pollworkqueue was not previously | |
414 | * running and the above get ref is obvious | |
415 | * required and will be put when the thread | |
416 | * terminates by a specific call | |
417 | */ | |
418 | } else { | |
419 | /* | |
420 | * the pollworkqueue was already running from | |
421 | * a previous invocation and thus to keep the | |
422 | * kref counts correct we must undo the get | |
423 | */ | |
424 | kref_put(&vub300->kref, vub300_delete); | |
425 | } | |
426 | } | |
427 | ||
428 | static void vub300_queue_dead_work(struct vub300_mmc_host *vub300) | |
429 | { | |
430 | kref_get(&vub300->kref); | |
431 | if (queue_work(deadworkqueue, &vub300->deadwork)) { | |
432 | /* | |
433 | * then the deadworkqueue was not previously | |
434 | * running and the above get ref is obvious | |
435 | * required and will be put when the thread | |
436 | * terminates by a specific call | |
437 | */ | |
438 | } else { | |
439 | /* | |
440 | * the deadworkqueue was already running from | |
441 | * a previous invocation and thus to keep the | |
442 | * kref counts correct we must undo the get | |
443 | */ | |
444 | kref_put(&vub300->kref, vub300_delete); | |
445 | } | |
446 | } | |
447 | ||
448 | static void irqpoll_res_completed(struct urb *urb) | |
449 | { /* urb completion handler - hardirq */ | |
450 | struct vub300_mmc_host *vub300 = (struct vub300_mmc_host *)urb->context; | |
451 | if (urb->status) | |
452 | vub300->usb_transport_fail = urb->status; | |
453 | complete(&vub300->irqpoll_complete); | |
454 | } | |
455 | ||
456 | static void irqpoll_out_completed(struct urb *urb) | |
457 | { /* urb completion handler - hardirq */ | |
458 | struct vub300_mmc_host *vub300 = (struct vub300_mmc_host *)urb->context; | |
459 | if (urb->status) { | |
460 | vub300->usb_transport_fail = urb->status; | |
461 | complete(&vub300->irqpoll_complete); | |
462 | return; | |
463 | } else { | |
464 | int ret; | |
465 | unsigned int pipe = | |
466 | usb_rcvbulkpipe(vub300->udev, vub300->cmnd_res_ep); | |
467 | usb_fill_bulk_urb(vub300->command_res_urb, vub300->udev, pipe, | |
468 | &vub300->resp, sizeof(vub300->resp), | |
469 | irqpoll_res_completed, vub300); | |
470 | vub300->command_res_urb->actual_length = 0; | |
471 | ret = usb_submit_urb(vub300->command_res_urb, GFP_ATOMIC); | |
472 | if (ret) { | |
473 | vub300->usb_transport_fail = ret; | |
474 | complete(&vub300->irqpoll_complete); | |
475 | } | |
476 | return; | |
477 | } | |
478 | } | |
479 | ||
480 | static void send_irqpoll(struct vub300_mmc_host *vub300) | |
481 | { | |
482 | /* cmd_mutex is held by vub300_pollwork_thread */ | |
483 | int retval; | |
484 | int timeout = 0xFFFF & (0x0001FFFF - firmware_irqpoll_timeout); | |
485 | vub300->cmnd.poll.header_size = 22; | |
486 | vub300->cmnd.poll.header_type = 1; | |
487 | vub300->cmnd.poll.port_number = 0; | |
488 | vub300->cmnd.poll.command_type = 2; | |
489 | vub300->cmnd.poll.poll_timeout_lsb = 0xFF & (unsigned)timeout; | |
490 | vub300->cmnd.poll.poll_timeout_msb = 0xFF & (unsigned)(timeout >> 8); | |
491 | usb_fill_bulk_urb(vub300->command_out_urb, vub300->udev, | |
492 | usb_sndbulkpipe(vub300->udev, vub300->cmnd_out_ep) | |
493 | , &vub300->cmnd, sizeof(vub300->cmnd) | |
494 | , irqpoll_out_completed, vub300); | |
495 | retval = usb_submit_urb(vub300->command_out_urb, GFP_KERNEL); | |
496 | if (0 > retval) { | |
497 | vub300->usb_transport_fail = retval; | |
498 | vub300_queue_poll_work(vub300, 1); | |
499 | complete(&vub300->irqpoll_complete); | |
500 | return; | |
501 | } else { | |
502 | return; | |
503 | } | |
504 | } | |
505 | ||
506 | static void new_system_port_status(struct vub300_mmc_host *vub300) | |
507 | { | |
508 | int old_card_present = vub300->card_present; | |
509 | int new_card_present = | |
510 | (0x0001 & vub300->system_port_status.port_flags) ? 1 : 0; | |
511 | vub300->read_only = | |
512 | (0x0010 & vub300->system_port_status.port_flags) ? 1 : 0; | |
513 | if (new_card_present && !old_card_present) { | |
514 | dev_info(&vub300->udev->dev, "card just inserted\n"); | |
515 | vub300->card_present = 1; | |
516 | vub300->bus_width = 0; | |
517 | if (disable_offload_processing) | |
518 | strncpy(vub300->vub_name, "EMPTY Processing Disabled", | |
519 | sizeof(vub300->vub_name)); | |
520 | else | |
521 | vub300->vub_name[0] = 0; | |
522 | mmc_detect_change(vub300->mmc, 1); | |
523 | } else if (!new_card_present && old_card_present) { | |
524 | dev_info(&vub300->udev->dev, "card just ejected\n"); | |
525 | vub300->card_present = 0; | |
526 | mmc_detect_change(vub300->mmc, 0); | |
527 | } else { | |
528 | /* no change */ | |
529 | } | |
530 | } | |
531 | ||
532 | static void __add_offloaded_reg_to_fifo(struct vub300_mmc_host *vub300, | |
533 | struct offload_registers_access | |
534 | *register_access, u8 func) | |
535 | { | |
536 | u8 r = vub300->fn[func].offload_point + vub300->fn[func].offload_count; | |
537 | memcpy(&vub300->fn[func].reg[MAXREGMASK & r], register_access, | |
538 | sizeof(struct offload_registers_access)); | |
539 | vub300->fn[func].offload_count += 1; | |
540 | vub300->total_offload_count += 1; | |
541 | } | |
542 | ||
543 | static void add_offloaded_reg(struct vub300_mmc_host *vub300, | |
544 | struct offload_registers_access *register_access) | |
545 | { | |
546 | u32 Register = ((0x03 & register_access->command_byte[0]) << 15) | |
547 | | ((0xFF & register_access->command_byte[1]) << 7) | |
548 | | ((0xFE & register_access->command_byte[2]) >> 1); | |
549 | u8 func = ((0x70 & register_access->command_byte[0]) >> 4); | |
550 | u8 regs = vub300->dynamic_register_count; | |
551 | u8 i = 0; | |
552 | while (0 < regs-- && 1 == vub300->sdio_register[i].activate) { | |
553 | if (vub300->sdio_register[i].func_num == func && | |
554 | vub300->sdio_register[i].sdio_reg == Register) { | |
555 | if (vub300->sdio_register[i].prepared == 0) | |
556 | vub300->sdio_register[i].prepared = 1; | |
557 | vub300->sdio_register[i].response = | |
558 | register_access->Respond_Byte[2]; | |
559 | vub300->sdio_register[i].regvalue = | |
560 | register_access->Respond_Byte[3]; | |
561 | return; | |
562 | } else { | |
563 | i += 1; | |
564 | continue; | |
565 | } | |
7eece8d0 | 566 | } |
88095e7b TO |
567 | __add_offloaded_reg_to_fifo(vub300, register_access, func); |
568 | } | |
569 | ||
570 | static void check_vub300_port_status(struct vub300_mmc_host *vub300) | |
571 | { | |
572 | /* | |
573 | * cmd_mutex is held by vub300_pollwork_thread, | |
574 | * vub300_deadwork_thread or vub300_cmndwork_thread | |
575 | */ | |
576 | int retval; | |
577 | retval = | |
578 | usb_control_msg(vub300->udev, usb_rcvctrlpipe(vub300->udev, 0), | |
579 | GET_SYSTEM_PORT_STATUS, | |
580 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
581 | 0x0000, 0x0000, &vub300->system_port_status, | |
582 | sizeof(vub300->system_port_status), HZ); | |
583 | if (sizeof(vub300->system_port_status) == retval) | |
584 | new_system_port_status(vub300); | |
585 | } | |
586 | ||
587 | static void __vub300_irqpoll_response(struct vub300_mmc_host *vub300) | |
588 | { | |
589 | /* cmd_mutex is held by vub300_pollwork_thread */ | |
590 | if (vub300->command_res_urb->actual_length == 0) | |
591 | return; | |
592 | ||
593 | switch (vub300->resp.common.header_type) { | |
594 | case RESPONSE_INTERRUPT: | |
595 | mutex_lock(&vub300->irq_mutex); | |
596 | if (vub300->irq_enabled) | |
597 | mmc_signal_sdio_irq(vub300->mmc); | |
598 | else | |
599 | vub300->irqs_queued += 1; | |
600 | vub300->irq_disabled = 1; | |
601 | mutex_unlock(&vub300->irq_mutex); | |
602 | break; | |
603 | case RESPONSE_ERROR: | |
604 | if (vub300->resp.error.error_code == SD_ERROR_NO_DEVICE) | |
605 | check_vub300_port_status(vub300); | |
606 | break; | |
607 | case RESPONSE_STATUS: | |
608 | vub300->system_port_status = vub300->resp.status; | |
609 | new_system_port_status(vub300); | |
610 | if (!vub300->card_present) | |
611 | vub300_queue_poll_work(vub300, HZ / 5); | |
612 | break; | |
613 | case RESPONSE_IRQ_DISABLED: | |
614 | { | |
615 | int offloaded_data_length = vub300->resp.common.header_size - 3; | |
616 | int register_count = offloaded_data_length >> 3; | |
617 | int ri = 0; | |
618 | while (register_count--) { | |
619 | add_offloaded_reg(vub300, &vub300->resp.irq.reg[ri]); | |
620 | ri += 1; | |
621 | } | |
622 | mutex_lock(&vub300->irq_mutex); | |
623 | if (vub300->irq_enabled) | |
624 | mmc_signal_sdio_irq(vub300->mmc); | |
625 | else | |
626 | vub300->irqs_queued += 1; | |
627 | vub300->irq_disabled = 1; | |
628 | mutex_unlock(&vub300->irq_mutex); | |
629 | break; | |
630 | } | |
631 | case RESPONSE_IRQ_ENABLED: | |
632 | { | |
633 | int offloaded_data_length = vub300->resp.common.header_size - 3; | |
634 | int register_count = offloaded_data_length >> 3; | |
635 | int ri = 0; | |
636 | while (register_count--) { | |
637 | add_offloaded_reg(vub300, &vub300->resp.irq.reg[ri]); | |
638 | ri += 1; | |
639 | } | |
640 | mutex_lock(&vub300->irq_mutex); | |
641 | if (vub300->irq_enabled) | |
642 | mmc_signal_sdio_irq(vub300->mmc); | |
643 | else if (vub300->irqs_queued) | |
644 | vub300->irqs_queued += 1; | |
645 | else | |
646 | vub300->irqs_queued += 1; | |
647 | vub300->irq_disabled = 0; | |
648 | mutex_unlock(&vub300->irq_mutex); | |
649 | break; | |
650 | } | |
651 | case RESPONSE_NO_INTERRUPT: | |
652 | vub300_queue_poll_work(vub300, 1); | |
653 | break; | |
654 | default: | |
655 | break; | |
656 | } | |
657 | } | |
658 | ||
659 | static void __do_poll(struct vub300_mmc_host *vub300) | |
660 | { | |
661 | /* cmd_mutex is held by vub300_pollwork_thread */ | |
6bb836d6 | 662 | unsigned long commretval; |
88095e7b TO |
663 | mod_timer(&vub300->inactivity_timer, jiffies + HZ); |
664 | init_completion(&vub300->irqpoll_complete); | |
665 | send_irqpoll(vub300); | |
666 | commretval = wait_for_completion_timeout(&vub300->irqpoll_complete, | |
667 | msecs_to_jiffies(500)); | |
668 | if (vub300->usb_transport_fail) { | |
669 | /* no need to do anything */ | |
670 | } else if (commretval == 0) { | |
671 | vub300->usb_timed_out = 1; | |
672 | usb_kill_urb(vub300->command_out_urb); | |
673 | usb_kill_urb(vub300->command_res_urb); | |
88095e7b TO |
674 | } else { /* commretval > 0 */ |
675 | __vub300_irqpoll_response(vub300); | |
676 | } | |
677 | } | |
678 | ||
679 | /* this thread runs only when the driver | |
680 | * is trying to poll the device for an IRQ | |
681 | */ | |
682 | static void vub300_pollwork_thread(struct work_struct *work) | |
683 | { /* NOT irq */ | |
684 | struct vub300_mmc_host *vub300 = container_of(work, | |
685 | struct vub300_mmc_host, pollwork.work); | |
686 | if (!vub300->interface) { | |
687 | kref_put(&vub300->kref, vub300_delete); | |
688 | return; | |
689 | } | |
690 | mutex_lock(&vub300->cmd_mutex); | |
691 | if (vub300->cmd) { | |
692 | vub300_queue_poll_work(vub300, 1); | |
693 | } else if (!vub300->card_present) { | |
694 | /* no need to do anything */ | |
695 | } else { /* vub300->card_present */ | |
696 | mutex_lock(&vub300->irq_mutex); | |
697 | if (!vub300->irq_enabled) { | |
698 | mutex_unlock(&vub300->irq_mutex); | |
699 | } else if (vub300->irqs_queued) { | |
700 | vub300->irqs_queued -= 1; | |
701 | mmc_signal_sdio_irq(vub300->mmc); | |
702 | mod_timer(&vub300->inactivity_timer, jiffies + HZ); | |
703 | mutex_unlock(&vub300->irq_mutex); | |
704 | } else { /* NOT vub300->irqs_queued */ | |
705 | mutex_unlock(&vub300->irq_mutex); | |
706 | __do_poll(vub300); | |
707 | } | |
708 | } | |
709 | mutex_unlock(&vub300->cmd_mutex); | |
710 | kref_put(&vub300->kref, vub300_delete); | |
711 | } | |
712 | ||
713 | static void vub300_deadwork_thread(struct work_struct *work) | |
714 | { /* NOT irq */ | |
715 | struct vub300_mmc_host *vub300 = | |
716 | container_of(work, struct vub300_mmc_host, deadwork); | |
717 | if (!vub300->interface) { | |
718 | kref_put(&vub300->kref, vub300_delete); | |
719 | return; | |
720 | } | |
721 | mutex_lock(&vub300->cmd_mutex); | |
722 | if (vub300->cmd) { | |
723 | /* | |
724 | * a command got in as the inactivity | |
725 | * timer expired - so we just let the | |
726 | * processing of the command show if | |
727 | * the device is dead | |
728 | */ | |
729 | } else if (vub300->card_present) { | |
730 | check_vub300_port_status(vub300); | |
731 | } else if (vub300->mmc && vub300->mmc->card && | |
732 | mmc_card_present(vub300->mmc->card)) { | |
733 | /* | |
734 | * the MMC core must not have responded | |
735 | * to the previous indication - lets | |
736 | * hope that it eventually does so we | |
737 | * will just ignore this for now | |
738 | */ | |
739 | } else { | |
740 | check_vub300_port_status(vub300); | |
741 | } | |
742 | mod_timer(&vub300->inactivity_timer, jiffies + HZ); | |
743 | mutex_unlock(&vub300->cmd_mutex); | |
744 | kref_put(&vub300->kref, vub300_delete); | |
745 | } | |
746 | ||
747 | static void vub300_inactivity_timer_expired(unsigned long data) | |
748 | { /* softirq */ | |
749 | struct vub300_mmc_host *vub300 = (struct vub300_mmc_host *)data; | |
750 | if (!vub300->interface) { | |
751 | kref_put(&vub300->kref, vub300_delete); | |
752 | } else if (vub300->cmd) { | |
753 | mod_timer(&vub300->inactivity_timer, jiffies + HZ); | |
754 | } else { | |
755 | vub300_queue_dead_work(vub300); | |
756 | mod_timer(&vub300->inactivity_timer, jiffies + HZ); | |
757 | } | |
758 | } | |
759 | ||
760 | static int vub300_response_error(u8 error_code) | |
761 | { | |
762 | switch (error_code) { | |
763 | case SD_ERROR_PIO_TIMEOUT: | |
764 | case SD_ERROR_1BIT_TIMEOUT: | |
765 | case SD_ERROR_4BIT_TIMEOUT: | |
766 | return -ETIMEDOUT; | |
767 | case SD_ERROR_STAT_DATA: | |
768 | case SD_ERROR_OVERRUN: | |
769 | case SD_ERROR_STAT_CMD: | |
770 | case SD_ERROR_STAT_CMD_TIMEOUT: | |
771 | case SD_ERROR_SDCRDY_STUCK: | |
772 | case SD_ERROR_UNHANDLED: | |
773 | case SD_ERROR_1BIT_CRC_WRONG: | |
774 | case SD_ERROR_4BIT_CRC_WRONG: | |
775 | case SD_ERROR_1BIT_CRC_ERROR: | |
776 | case SD_ERROR_4BIT_CRC_ERROR: | |
777 | case SD_ERROR_NO_CMD_ENDBIT: | |
778 | case SD_ERROR_NO_1BIT_DATEND: | |
779 | case SD_ERROR_NO_4BIT_DATEND: | |
780 | case SD_ERROR_1BIT_DATA_TIMEOUT: | |
781 | case SD_ERROR_4BIT_DATA_TIMEOUT: | |
782 | case SD_ERROR_1BIT_UNEXPECTED_TIMEOUT: | |
783 | case SD_ERROR_4BIT_UNEXPECTED_TIMEOUT: | |
784 | return -EILSEQ; | |
785 | case 33: | |
786 | return -EILSEQ; | |
787 | case SD_ERROR_ILLEGAL_COMMAND: | |
788 | return -EINVAL; | |
789 | case SD_ERROR_NO_DEVICE: | |
790 | return -ENOMEDIUM; | |
791 | default: | |
792 | return -ENODEV; | |
793 | } | |
794 | } | |
795 | ||
796 | static void command_res_completed(struct urb *urb) | |
797 | { /* urb completion handler - hardirq */ | |
798 | struct vub300_mmc_host *vub300 = (struct vub300_mmc_host *)urb->context; | |
799 | if (urb->status) { | |
800 | /* we have to let the initiator handle the error */ | |
801 | } else if (vub300->command_res_urb->actual_length == 0) { | |
802 | /* | |
803 | * we have seen this happen once or twice and | |
804 | * we suspect a buggy USB host controller | |
805 | */ | |
806 | } else if (!vub300->data) { | |
7122bbb0 | 807 | /* this means that the command (typically CMD52) succeeded */ |
88095e7b TO |
808 | } else if (vub300->resp.common.header_type != 0x02) { |
809 | /* | |
810 | * this is an error response from the VUB300 chip | |
811 | * and we let the initiator handle it | |
812 | */ | |
813 | } else if (vub300->urb) { | |
814 | vub300->cmd->error = | |
815 | vub300_response_error(vub300->resp.error.error_code); | |
816 | usb_unlink_urb(vub300->urb); | |
817 | } else { | |
818 | vub300->cmd->error = | |
819 | vub300_response_error(vub300->resp.error.error_code); | |
820 | usb_sg_cancel(&vub300->sg_request); | |
821 | } | |
822 | complete(&vub300->command_complete); /* got_response_in */ | |
823 | } | |
824 | ||
825 | static void command_out_completed(struct urb *urb) | |
826 | { /* urb completion handler - hardirq */ | |
827 | struct vub300_mmc_host *vub300 = (struct vub300_mmc_host *)urb->context; | |
828 | if (urb->status) { | |
829 | complete(&vub300->command_complete); | |
830 | } else { | |
831 | int ret; | |
832 | unsigned int pipe = | |
833 | usb_rcvbulkpipe(vub300->udev, vub300->cmnd_res_ep); | |
834 | usb_fill_bulk_urb(vub300->command_res_urb, vub300->udev, pipe, | |
835 | &vub300->resp, sizeof(vub300->resp), | |
836 | command_res_completed, vub300); | |
837 | vub300->command_res_urb->actual_length = 0; | |
838 | ret = usb_submit_urb(vub300->command_res_urb, GFP_ATOMIC); | |
839 | if (ret == 0) { | |
840 | /* | |
841 | * the urb completion handler will call | |
842 | * our completion handler | |
843 | */ | |
844 | } else { | |
845 | /* | |
846 | * and thus we only call it directly | |
847 | * when it will not be called | |
848 | */ | |
849 | complete(&vub300->command_complete); | |
850 | } | |
851 | } | |
852 | } | |
853 | ||
854 | /* | |
855 | * the STUFF bits are masked out for the comparisons | |
856 | */ | |
857 | static void snoop_block_size_and_bus_width(struct vub300_mmc_host *vub300, | |
858 | u32 cmd_arg) | |
859 | { | |
860 | if ((0xFBFFFE00 & cmd_arg) == 0x80022200) | |
861 | vub300->fbs[1] = (cmd_arg << 8) | (0x00FF & vub300->fbs[1]); | |
862 | else if ((0xFBFFFE00 & cmd_arg) == 0x80022000) | |
863 | vub300->fbs[1] = (0xFF & cmd_arg) | (0xFF00 & vub300->fbs[1]); | |
864 | else if ((0xFBFFFE00 & cmd_arg) == 0x80042200) | |
865 | vub300->fbs[2] = (cmd_arg << 8) | (0x00FF & vub300->fbs[2]); | |
866 | else if ((0xFBFFFE00 & cmd_arg) == 0x80042000) | |
867 | vub300->fbs[2] = (0xFF & cmd_arg) | (0xFF00 & vub300->fbs[2]); | |
868 | else if ((0xFBFFFE00 & cmd_arg) == 0x80062200) | |
869 | vub300->fbs[3] = (cmd_arg << 8) | (0x00FF & vub300->fbs[3]); | |
870 | else if ((0xFBFFFE00 & cmd_arg) == 0x80062000) | |
871 | vub300->fbs[3] = (0xFF & cmd_arg) | (0xFF00 & vub300->fbs[3]); | |
872 | else if ((0xFBFFFE00 & cmd_arg) == 0x80082200) | |
873 | vub300->fbs[4] = (cmd_arg << 8) | (0x00FF & vub300->fbs[4]); | |
874 | else if ((0xFBFFFE00 & cmd_arg) == 0x80082000) | |
875 | vub300->fbs[4] = (0xFF & cmd_arg) | (0xFF00 & vub300->fbs[4]); | |
876 | else if ((0xFBFFFE00 & cmd_arg) == 0x800A2200) | |
877 | vub300->fbs[5] = (cmd_arg << 8) | (0x00FF & vub300->fbs[5]); | |
878 | else if ((0xFBFFFE00 & cmd_arg) == 0x800A2000) | |
879 | vub300->fbs[5] = (0xFF & cmd_arg) | (0xFF00 & vub300->fbs[5]); | |
880 | else if ((0xFBFFFE00 & cmd_arg) == 0x800C2200) | |
881 | vub300->fbs[6] = (cmd_arg << 8) | (0x00FF & vub300->fbs[6]); | |
882 | else if ((0xFBFFFE00 & cmd_arg) == 0x800C2000) | |
883 | vub300->fbs[6] = (0xFF & cmd_arg) | (0xFF00 & vub300->fbs[6]); | |
884 | else if ((0xFBFFFE00 & cmd_arg) == 0x800E2200) | |
885 | vub300->fbs[7] = (cmd_arg << 8) | (0x00FF & vub300->fbs[7]); | |
886 | else if ((0xFBFFFE00 & cmd_arg) == 0x800E2000) | |
887 | vub300->fbs[7] = (0xFF & cmd_arg) | (0xFF00 & vub300->fbs[7]); | |
888 | else if ((0xFBFFFE03 & cmd_arg) == 0x80000E00) | |
889 | vub300->bus_width = 1; | |
890 | else if ((0xFBFFFE03 & cmd_arg) == 0x80000E02) | |
891 | vub300->bus_width = 4; | |
892 | } | |
893 | ||
894 | static void send_command(struct vub300_mmc_host *vub300) | |
895 | { | |
896 | /* cmd_mutex is held by vub300_cmndwork_thread */ | |
897 | struct mmc_command *cmd = vub300->cmd; | |
898 | struct mmc_data *data = vub300->data; | |
899 | int retval; | |
900 | int i; | |
901 | u8 response_type; | |
902 | if (vub300->app_spec) { | |
903 | switch (cmd->opcode) { | |
904 | case 6: | |
905 | response_type = SDRT_1; | |
906 | vub300->resp_len = 6; | |
907 | if (0x00000000 == (0x00000003 & cmd->arg)) | |
908 | vub300->bus_width = 1; | |
909 | else if (0x00000002 == (0x00000003 & cmd->arg)) | |
910 | vub300->bus_width = 4; | |
911 | else | |
912 | dev_err(&vub300->udev->dev, | |
913 | "unexpected ACMD6 bus_width=%d\n", | |
914 | 0x00000003 & cmd->arg); | |
915 | break; | |
916 | case 13: | |
917 | response_type = SDRT_1; | |
918 | vub300->resp_len = 6; | |
919 | break; | |
920 | case 22: | |
921 | response_type = SDRT_1; | |
922 | vub300->resp_len = 6; | |
923 | break; | |
924 | case 23: | |
925 | response_type = SDRT_1; | |
926 | vub300->resp_len = 6; | |
927 | break; | |
928 | case 41: | |
929 | response_type = SDRT_3; | |
930 | vub300->resp_len = 6; | |
931 | break; | |
932 | case 42: | |
933 | response_type = SDRT_1; | |
934 | vub300->resp_len = 6; | |
935 | break; | |
936 | case 51: | |
937 | response_type = SDRT_1; | |
938 | vub300->resp_len = 6; | |
939 | break; | |
940 | case 55: | |
941 | response_type = SDRT_1; | |
942 | vub300->resp_len = 6; | |
943 | break; | |
944 | default: | |
945 | vub300->resp_len = 0; | |
946 | cmd->error = -EINVAL; | |
947 | complete(&vub300->command_complete); | |
948 | return; | |
949 | } | |
950 | vub300->app_spec = 0; | |
951 | } else { | |
952 | switch (cmd->opcode) { | |
953 | case 0: | |
954 | response_type = SDRT_NONE; | |
955 | vub300->resp_len = 0; | |
956 | break; | |
957 | case 1: | |
958 | response_type = SDRT_3; | |
959 | vub300->resp_len = 6; | |
960 | break; | |
961 | case 2: | |
962 | response_type = SDRT_2; | |
963 | vub300->resp_len = 17; | |
964 | break; | |
965 | case 3: | |
966 | response_type = SDRT_6; | |
967 | vub300->resp_len = 6; | |
968 | break; | |
969 | case 4: | |
970 | response_type = SDRT_NONE; | |
971 | vub300->resp_len = 0; | |
972 | break; | |
973 | case 5: | |
974 | response_type = SDRT_4; | |
975 | vub300->resp_len = 6; | |
976 | break; | |
977 | case 6: | |
978 | response_type = SDRT_1; | |
979 | vub300->resp_len = 6; | |
980 | break; | |
981 | case 7: | |
982 | response_type = SDRT_1B; | |
983 | vub300->resp_len = 6; | |
984 | break; | |
985 | case 8: | |
986 | response_type = SDRT_7; | |
987 | vub300->resp_len = 6; | |
988 | break; | |
989 | case 9: | |
990 | response_type = SDRT_2; | |
991 | vub300->resp_len = 17; | |
992 | break; | |
993 | case 10: | |
994 | response_type = SDRT_2; | |
995 | vub300->resp_len = 17; | |
996 | break; | |
997 | case 12: | |
998 | response_type = SDRT_1B; | |
999 | vub300->resp_len = 6; | |
1000 | break; | |
1001 | case 13: | |
1002 | response_type = SDRT_1; | |
1003 | vub300->resp_len = 6; | |
1004 | break; | |
1005 | case 15: | |
1006 | response_type = SDRT_NONE; | |
1007 | vub300->resp_len = 0; | |
1008 | break; | |
1009 | case 16: | |
1010 | for (i = 0; i < ARRAY_SIZE(vub300->fbs); i++) | |
1011 | vub300->fbs[i] = 0xFFFF & cmd->arg; | |
1012 | response_type = SDRT_1; | |
1013 | vub300->resp_len = 6; | |
1014 | break; | |
1015 | case 17: | |
1016 | case 18: | |
1017 | case 24: | |
1018 | case 25: | |
1019 | case 27: | |
1020 | response_type = SDRT_1; | |
1021 | vub300->resp_len = 6; | |
1022 | break; | |
1023 | case 28: | |
1024 | case 29: | |
1025 | response_type = SDRT_1B; | |
1026 | vub300->resp_len = 6; | |
1027 | break; | |
1028 | case 30: | |
1029 | case 32: | |
1030 | case 33: | |
1031 | response_type = SDRT_1; | |
1032 | vub300->resp_len = 6; | |
1033 | break; | |
1034 | case 38: | |
1035 | response_type = SDRT_1B; | |
1036 | vub300->resp_len = 6; | |
1037 | break; | |
1038 | case 42: | |
1039 | response_type = SDRT_1; | |
1040 | vub300->resp_len = 6; | |
1041 | break; | |
1042 | case 52: | |
1043 | response_type = SDRT_5; | |
1044 | vub300->resp_len = 6; | |
1045 | snoop_block_size_and_bus_width(vub300, cmd->arg); | |
1046 | break; | |
1047 | case 53: | |
1048 | response_type = SDRT_5; | |
1049 | vub300->resp_len = 6; | |
1050 | break; | |
1051 | case 55: | |
1052 | response_type = SDRT_1; | |
1053 | vub300->resp_len = 6; | |
1054 | vub300->app_spec = 1; | |
1055 | break; | |
1056 | case 56: | |
1057 | response_type = SDRT_1; | |
1058 | vub300->resp_len = 6; | |
1059 | break; | |
1060 | default: | |
1061 | vub300->resp_len = 0; | |
1062 | cmd->error = -EINVAL; | |
1063 | complete(&vub300->command_complete); | |
1064 | return; | |
1065 | } | |
1066 | } | |
1067 | /* | |
1068 | * it is a shame that we can not use "sizeof(struct sd_command_header)" | |
1069 | * this is because the packet _must_ be padded to 64 bytes | |
1070 | */ | |
1071 | vub300->cmnd.head.header_size = 20; | |
1072 | vub300->cmnd.head.header_type = 0x00; | |
1073 | vub300->cmnd.head.port_number = 0; /* "0" means port 1 */ | |
1074 | vub300->cmnd.head.command_type = 0x00; /* standard read command */ | |
1075 | vub300->cmnd.head.response_type = response_type; | |
1076 | vub300->cmnd.head.command_index = cmd->opcode; | |
1077 | vub300->cmnd.head.arguments[0] = cmd->arg >> 24; | |
1078 | vub300->cmnd.head.arguments[1] = cmd->arg >> 16; | |
1079 | vub300->cmnd.head.arguments[2] = cmd->arg >> 8; | |
1080 | vub300->cmnd.head.arguments[3] = cmd->arg >> 0; | |
1081 | if (cmd->opcode == 52) { | |
1082 | int fn = 0x7 & (cmd->arg >> 28); | |
1083 | vub300->cmnd.head.block_count[0] = 0; | |
1084 | vub300->cmnd.head.block_count[1] = 0; | |
1085 | vub300->cmnd.head.block_size[0] = (vub300->fbs[fn] >> 8) & 0xFF; | |
1086 | vub300->cmnd.head.block_size[1] = (vub300->fbs[fn] >> 0) & 0xFF; | |
1087 | vub300->cmnd.head.command_type = 0x00; | |
1088 | vub300->cmnd.head.transfer_size[0] = 0; | |
1089 | vub300->cmnd.head.transfer_size[1] = 0; | |
1090 | vub300->cmnd.head.transfer_size[2] = 0; | |
1091 | vub300->cmnd.head.transfer_size[3] = 0; | |
1092 | } else if (!data) { | |
1093 | vub300->cmnd.head.block_count[0] = 0; | |
1094 | vub300->cmnd.head.block_count[1] = 0; | |
1095 | vub300->cmnd.head.block_size[0] = (vub300->fbs[0] >> 8) & 0xFF; | |
1096 | vub300->cmnd.head.block_size[1] = (vub300->fbs[0] >> 0) & 0xFF; | |
1097 | vub300->cmnd.head.command_type = 0x00; | |
1098 | vub300->cmnd.head.transfer_size[0] = 0; | |
1099 | vub300->cmnd.head.transfer_size[1] = 0; | |
1100 | vub300->cmnd.head.transfer_size[2] = 0; | |
1101 | vub300->cmnd.head.transfer_size[3] = 0; | |
1102 | } else if (cmd->opcode == 53) { | |
1103 | int fn = 0x7 & (cmd->arg >> 28); | |
1104 | if (0x08 & vub300->cmnd.head.arguments[0]) { /* BLOCK MODE */ | |
1105 | vub300->cmnd.head.block_count[0] = | |
1106 | (data->blocks >> 8) & 0xFF; | |
1107 | vub300->cmnd.head.block_count[1] = | |
1108 | (data->blocks >> 0) & 0xFF; | |
1109 | vub300->cmnd.head.block_size[0] = | |
1110 | (data->blksz >> 8) & 0xFF; | |
1111 | vub300->cmnd.head.block_size[1] = | |
1112 | (data->blksz >> 0) & 0xFF; | |
1113 | } else { /* BYTE MODE */ | |
1114 | vub300->cmnd.head.block_count[0] = 0; | |
1115 | vub300->cmnd.head.block_count[1] = 0; | |
1116 | vub300->cmnd.head.block_size[0] = | |
1117 | (vub300->datasize >> 8) & 0xFF; | |
1118 | vub300->cmnd.head.block_size[1] = | |
1119 | (vub300->datasize >> 0) & 0xFF; | |
1120 | } | |
1121 | vub300->cmnd.head.command_type = | |
1122 | (MMC_DATA_READ & data->flags) ? 0x00 : 0x80; | |
1123 | vub300->cmnd.head.transfer_size[0] = | |
1124 | (vub300->datasize >> 24) & 0xFF; | |
1125 | vub300->cmnd.head.transfer_size[1] = | |
1126 | (vub300->datasize >> 16) & 0xFF; | |
1127 | vub300->cmnd.head.transfer_size[2] = | |
1128 | (vub300->datasize >> 8) & 0xFF; | |
1129 | vub300->cmnd.head.transfer_size[3] = | |
1130 | (vub300->datasize >> 0) & 0xFF; | |
1131 | if (vub300->datasize < vub300->fbs[fn]) { | |
1132 | vub300->cmnd.head.block_count[0] = 0; | |
1133 | vub300->cmnd.head.block_count[1] = 0; | |
1134 | } | |
1135 | } else { | |
1136 | vub300->cmnd.head.block_count[0] = (data->blocks >> 8) & 0xFF; | |
1137 | vub300->cmnd.head.block_count[1] = (data->blocks >> 0) & 0xFF; | |
1138 | vub300->cmnd.head.block_size[0] = (data->blksz >> 8) & 0xFF; | |
1139 | vub300->cmnd.head.block_size[1] = (data->blksz >> 0) & 0xFF; | |
1140 | vub300->cmnd.head.command_type = | |
1141 | (MMC_DATA_READ & data->flags) ? 0x00 : 0x80; | |
1142 | vub300->cmnd.head.transfer_size[0] = | |
1143 | (vub300->datasize >> 24) & 0xFF; | |
1144 | vub300->cmnd.head.transfer_size[1] = | |
1145 | (vub300->datasize >> 16) & 0xFF; | |
1146 | vub300->cmnd.head.transfer_size[2] = | |
1147 | (vub300->datasize >> 8) & 0xFF; | |
1148 | vub300->cmnd.head.transfer_size[3] = | |
1149 | (vub300->datasize >> 0) & 0xFF; | |
1150 | if (vub300->datasize < vub300->fbs[0]) { | |
1151 | vub300->cmnd.head.block_count[0] = 0; | |
1152 | vub300->cmnd.head.block_count[1] = 0; | |
1153 | } | |
1154 | } | |
1155 | if (vub300->cmnd.head.block_size[0] || vub300->cmnd.head.block_size[1]) { | |
1156 | u16 block_size = vub300->cmnd.head.block_size[1] | | |
1157 | (vub300->cmnd.head.block_size[0] << 8); | |
1158 | u16 block_boundary = FIRMWARE_BLOCK_BOUNDARY - | |
1159 | (FIRMWARE_BLOCK_BOUNDARY % block_size); | |
1160 | vub300->cmnd.head.block_boundary[0] = | |
1161 | (block_boundary >> 8) & 0xFF; | |
1162 | vub300->cmnd.head.block_boundary[1] = | |
1163 | (block_boundary >> 0) & 0xFF; | |
1164 | } else { | |
1165 | vub300->cmnd.head.block_boundary[0] = 0; | |
1166 | vub300->cmnd.head.block_boundary[1] = 0; | |
1167 | } | |
1168 | usb_fill_bulk_urb(vub300->command_out_urb, vub300->udev, | |
1169 | usb_sndbulkpipe(vub300->udev, vub300->cmnd_out_ep), | |
1170 | &vub300->cmnd, sizeof(vub300->cmnd), | |
1171 | command_out_completed, vub300); | |
1172 | retval = usb_submit_urb(vub300->command_out_urb, GFP_KERNEL); | |
1173 | if (retval < 0) { | |
1174 | cmd->error = retval; | |
1175 | complete(&vub300->command_complete); | |
1176 | return; | |
1177 | } else { | |
1178 | return; | |
1179 | } | |
1180 | } | |
1181 | ||
1182 | /* | |
1183 | * timer callback runs in atomic mode | |
1184 | * so it cannot call usb_kill_urb() | |
1185 | */ | |
1186 | static void vub300_sg_timed_out(unsigned long data) | |
1187 | { | |
1188 | struct vub300_mmc_host *vub300 = (struct vub300_mmc_host *)data; | |
1189 | vub300->usb_timed_out = 1; | |
1190 | usb_sg_cancel(&vub300->sg_request); | |
1191 | usb_unlink_urb(vub300->command_out_urb); | |
1192 | usb_unlink_urb(vub300->command_res_urb); | |
1193 | } | |
1194 | ||
1195 | static u16 roundup_to_multiple_of_64(u16 number) | |
1196 | { | |
1197 | return 0xFFC0 & (0x3F + number); | |
1198 | } | |
1199 | ||
1200 | /* | |
1201 | * this is a separate function to solve the 80 column width restriction | |
1202 | */ | |
1203 | static void __download_offload_pseudocode(struct vub300_mmc_host *vub300, | |
1204 | const struct firmware *fw) | |
1205 | { | |
1206 | u8 register_count = 0; | |
1207 | u16 ts = 0; | |
1208 | u16 interrupt_size = 0; | |
1209 | const u8 *data = fw->data; | |
1210 | int size = fw->size; | |
1211 | u8 c; | |
1212 | dev_info(&vub300->udev->dev, "using %s for SDIO offload processing\n", | |
1213 | vub300->vub_name); | |
1214 | do { | |
1215 | c = *data++; | |
1216 | } while (size-- && c); /* skip comment */ | |
1217 | dev_info(&vub300->udev->dev, "using offload firmware %s %s\n", fw->data, | |
1218 | vub300->vub_name); | |
1219 | if (size < 4) { | |
1220 | dev_err(&vub300->udev->dev, | |
1221 | "corrupt offload pseudocode in firmware %s\n", | |
1222 | vub300->vub_name); | |
1223 | strncpy(vub300->vub_name, "corrupt offload pseudocode", | |
1224 | sizeof(vub300->vub_name)); | |
1225 | return; | |
1226 | } | |
1227 | interrupt_size += *data++; | |
1228 | size -= 1; | |
1229 | interrupt_size <<= 8; | |
1230 | interrupt_size += *data++; | |
1231 | size -= 1; | |
1232 | if (interrupt_size < size) { | |
1233 | u16 xfer_length = roundup_to_multiple_of_64(interrupt_size); | |
1234 | u8 *xfer_buffer = kmalloc(xfer_length, GFP_KERNEL); | |
1235 | if (xfer_buffer) { | |
1236 | int retval; | |
1237 | memcpy(xfer_buffer, data, interrupt_size); | |
1238 | memset(xfer_buffer + interrupt_size, 0, | |
1239 | xfer_length - interrupt_size); | |
1240 | size -= interrupt_size; | |
1241 | data += interrupt_size; | |
1242 | retval = | |
1243 | usb_control_msg(vub300->udev, | |
1244 | usb_sndctrlpipe(vub300->udev, 0), | |
1245 | SET_INTERRUPT_PSEUDOCODE, | |
1246 | USB_DIR_OUT | USB_TYPE_VENDOR | | |
1247 | USB_RECIP_DEVICE, 0x0000, 0x0000, | |
1248 | xfer_buffer, xfer_length, HZ); | |
1249 | kfree(xfer_buffer); | |
1250 | if (retval < 0) { | |
1251 | strncpy(vub300->vub_name, | |
1252 | "SDIO pseudocode download failed", | |
1253 | sizeof(vub300->vub_name)); | |
1254 | return; | |
1255 | } | |
1256 | } else { | |
1257 | dev_err(&vub300->udev->dev, | |
1258 | "not enough memory for xfer buffer to send" | |
1259 | " INTERRUPT_PSEUDOCODE for %s %s\n", fw->data, | |
1260 | vub300->vub_name); | |
1261 | strncpy(vub300->vub_name, | |
1262 | "SDIO interrupt pseudocode download failed", | |
1263 | sizeof(vub300->vub_name)); | |
1264 | return; | |
1265 | } | |
1266 | } else { | |
1267 | dev_err(&vub300->udev->dev, | |
1268 | "corrupt interrupt pseudocode in firmware %s %s\n", | |
1269 | fw->data, vub300->vub_name); | |
1270 | strncpy(vub300->vub_name, "corrupt interrupt pseudocode", | |
1271 | sizeof(vub300->vub_name)); | |
1272 | return; | |
1273 | } | |
1274 | ts += *data++; | |
1275 | size -= 1; | |
1276 | ts <<= 8; | |
1277 | ts += *data++; | |
1278 | size -= 1; | |
1279 | if (ts < size) { | |
1280 | u16 xfer_length = roundup_to_multiple_of_64(ts); | |
1281 | u8 *xfer_buffer = kmalloc(xfer_length, GFP_KERNEL); | |
1282 | if (xfer_buffer) { | |
1283 | int retval; | |
1284 | memcpy(xfer_buffer, data, ts); | |
1285 | memset(xfer_buffer + ts, 0, | |
1286 | xfer_length - ts); | |
1287 | size -= ts; | |
1288 | data += ts; | |
1289 | retval = | |
1290 | usb_control_msg(vub300->udev, | |
1291 | usb_sndctrlpipe(vub300->udev, 0), | |
1292 | SET_TRANSFER_PSEUDOCODE, | |
1293 | USB_DIR_OUT | USB_TYPE_VENDOR | | |
1294 | USB_RECIP_DEVICE, 0x0000, 0x0000, | |
1295 | xfer_buffer, xfer_length, HZ); | |
1296 | kfree(xfer_buffer); | |
1297 | if (retval < 0) { | |
1298 | strncpy(vub300->vub_name, | |
1299 | "SDIO pseudocode download failed", | |
1300 | sizeof(vub300->vub_name)); | |
1301 | return; | |
1302 | } | |
1303 | } else { | |
1304 | dev_err(&vub300->udev->dev, | |
1305 | "not enough memory for xfer buffer to send" | |
1306 | " TRANSFER_PSEUDOCODE for %s %s\n", fw->data, | |
1307 | vub300->vub_name); | |
1308 | strncpy(vub300->vub_name, | |
1309 | "SDIO transfer pseudocode download failed", | |
1310 | sizeof(vub300->vub_name)); | |
1311 | return; | |
1312 | } | |
1313 | } else { | |
1314 | dev_err(&vub300->udev->dev, | |
1315 | "corrupt transfer pseudocode in firmware %s %s\n", | |
1316 | fw->data, vub300->vub_name); | |
1317 | strncpy(vub300->vub_name, "corrupt transfer pseudocode", | |
1318 | sizeof(vub300->vub_name)); | |
1319 | return; | |
1320 | } | |
1321 | register_count += *data++; | |
1322 | size -= 1; | |
1323 | if (register_count * 4 == size) { | |
1324 | int I = vub300->dynamic_register_count = register_count; | |
1325 | int i = 0; | |
1326 | while (I--) { | |
1327 | unsigned int func_num = 0; | |
1328 | vub300->sdio_register[i].func_num = *data++; | |
1329 | size -= 1; | |
1330 | func_num += *data++; | |
1331 | size -= 1; | |
1332 | func_num <<= 8; | |
1333 | func_num += *data++; | |
1334 | size -= 1; | |
1335 | func_num <<= 8; | |
1336 | func_num += *data++; | |
1337 | size -= 1; | |
1338 | vub300->sdio_register[i].sdio_reg = func_num; | |
1339 | vub300->sdio_register[i].activate = 1; | |
1340 | vub300->sdio_register[i].prepared = 0; | |
1341 | i += 1; | |
1342 | } | |
1343 | dev_info(&vub300->udev->dev, | |
1344 | "initialized %d dynamic pseudocode registers\n", | |
1345 | vub300->dynamic_register_count); | |
1346 | return; | |
1347 | } else { | |
1348 | dev_err(&vub300->udev->dev, | |
1349 | "corrupt dynamic registers in firmware %s\n", | |
1350 | vub300->vub_name); | |
1351 | strncpy(vub300->vub_name, "corrupt dynamic registers", | |
1352 | sizeof(vub300->vub_name)); | |
1353 | return; | |
1354 | } | |
1355 | } | |
1356 | ||
1357 | /* | |
1358 | * if the binary containing the EMPTY PseudoCode can not be found | |
1359 | * vub300->vub_name is set anyway in order to prevent an automatic retry | |
1360 | */ | |
1361 | static void download_offload_pseudocode(struct vub300_mmc_host *vub300) | |
1362 | { | |
1363 | struct mmc_card *card = vub300->mmc->card; | |
1364 | int sdio_funcs = card->sdio_funcs; | |
1365 | const struct firmware *fw = NULL; | |
1366 | int l = snprintf(vub300->vub_name, sizeof(vub300->vub_name), | |
1367 | "vub_%04X%04X", card->cis.vendor, card->cis.device); | |
1368 | int n = 0; | |
1369 | int retval; | |
1370 | for (n = 0; n < sdio_funcs; n++) { | |
1371 | struct sdio_func *sf = card->sdio_func[n]; | |
1372 | l += snprintf(vub300->vub_name + l, | |
1373 | sizeof(vub300->vub_name) - l, "_%04X%04X", | |
1374 | sf->vendor, sf->device); | |
7eece8d0 | 1375 | } |
88095e7b TO |
1376 | snprintf(vub300->vub_name + l, sizeof(vub300->vub_name) - l, ".bin"); |
1377 | dev_info(&vub300->udev->dev, "requesting offload firmware %s\n", | |
1378 | vub300->vub_name); | |
1379 | retval = request_firmware(&fw, vub300->vub_name, &card->dev); | |
1380 | if (retval < 0) { | |
1381 | strncpy(vub300->vub_name, "vub_default.bin", | |
1382 | sizeof(vub300->vub_name)); | |
1383 | retval = request_firmware(&fw, vub300->vub_name, &card->dev); | |
1384 | if (retval < 0) { | |
1385 | strncpy(vub300->vub_name, | |
1386 | "no SDIO offload firmware found", | |
1387 | sizeof(vub300->vub_name)); | |
1388 | } else { | |
1389 | __download_offload_pseudocode(vub300, fw); | |
1390 | release_firmware(fw); | |
1391 | } | |
1392 | } else { | |
1393 | __download_offload_pseudocode(vub300, fw); | |
1394 | release_firmware(fw); | |
1395 | } | |
1396 | } | |
1397 | ||
1398 | static void vub300_usb_bulk_msg_completion(struct urb *urb) | |
1399 | { /* urb completion handler - hardirq */ | |
1400 | complete((struct completion *)urb->context); | |
1401 | } | |
1402 | ||
1403 | static int vub300_usb_bulk_msg(struct vub300_mmc_host *vub300, | |
1404 | unsigned int pipe, void *data, int len, | |
1405 | int *actual_length, int timeout_msecs) | |
1406 | { | |
1407 | /* cmd_mutex is held by vub300_cmndwork_thread */ | |
1408 | struct usb_device *usb_dev = vub300->udev; | |
1409 | struct completion done; | |
1410 | int retval; | |
1411 | vub300->urb = usb_alloc_urb(0, GFP_KERNEL); | |
1412 | if (!vub300->urb) | |
1413 | return -ENOMEM; | |
1414 | usb_fill_bulk_urb(vub300->urb, usb_dev, pipe, data, len, | |
1415 | vub300_usb_bulk_msg_completion, NULL); | |
1416 | init_completion(&done); | |
1417 | vub300->urb->context = &done; | |
1418 | vub300->urb->actual_length = 0; | |
1419 | retval = usb_submit_urb(vub300->urb, GFP_KERNEL); | |
1420 | if (unlikely(retval)) | |
1421 | goto out; | |
1422 | if (!wait_for_completion_timeout | |
1423 | (&done, msecs_to_jiffies(timeout_msecs))) { | |
1424 | retval = -ETIMEDOUT; | |
1425 | usb_kill_urb(vub300->urb); | |
1426 | } else { | |
1427 | retval = vub300->urb->status; | |
1428 | } | |
1429 | out: | |
1430 | *actual_length = vub300->urb->actual_length; | |
1431 | usb_free_urb(vub300->urb); | |
1432 | vub300->urb = NULL; | |
1433 | return retval; | |
1434 | } | |
1435 | ||
1436 | static int __command_read_data(struct vub300_mmc_host *vub300, | |
1437 | struct mmc_command *cmd, struct mmc_data *data) | |
1438 | { | |
1439 | /* cmd_mutex is held by vub300_cmndwork_thread */ | |
1440 | int linear_length = vub300->datasize; | |
1441 | int padded_length = vub300->large_usb_packets ? | |
1442 | ((511 + linear_length) >> 9) << 9 : | |
1443 | ((63 + linear_length) >> 6) << 6; | |
1444 | if ((padded_length == linear_length) || !pad_input_to_usb_pkt) { | |
1445 | int result; | |
1446 | unsigned pipe; | |
1447 | pipe = usb_rcvbulkpipe(vub300->udev, vub300->data_inp_ep); | |
1448 | result = usb_sg_init(&vub300->sg_request, vub300->udev, | |
1449 | pipe, 0, data->sg, | |
1450 | data->sg_len, 0, GFP_KERNEL); | |
1451 | if (result < 0) { | |
1452 | usb_unlink_urb(vub300->command_out_urb); | |
1453 | usb_unlink_urb(vub300->command_res_urb); | |
1454 | cmd->error = result; | |
1455 | data->bytes_xfered = 0; | |
1456 | return 0; | |
1457 | } else { | |
1458 | vub300->sg_transfer_timer.expires = | |
1459 | jiffies + msecs_to_jiffies(2000 + | |
1460 | (linear_length / 16384)); | |
1461 | add_timer(&vub300->sg_transfer_timer); | |
1462 | usb_sg_wait(&vub300->sg_request); | |
1463 | del_timer(&vub300->sg_transfer_timer); | |
1464 | if (vub300->sg_request.status < 0) { | |
1465 | cmd->error = vub300->sg_request.status; | |
1466 | data->bytes_xfered = 0; | |
1467 | return 0; | |
1468 | } else { | |
1469 | data->bytes_xfered = vub300->datasize; | |
1470 | return linear_length; | |
1471 | } | |
1472 | } | |
1473 | } else { | |
1474 | u8 *buf = kmalloc(padded_length, GFP_KERNEL); | |
1475 | if (buf) { | |
1476 | int result; | |
1477 | unsigned pipe = usb_rcvbulkpipe(vub300->udev, | |
1478 | vub300->data_inp_ep); | |
1479 | int actual_length = 0; | |
1480 | result = vub300_usb_bulk_msg(vub300, pipe, buf, | |
1481 | padded_length, &actual_length, | |
1482 | 2000 + (padded_length / 16384)); | |
1483 | if (result < 0) { | |
1484 | cmd->error = result; | |
1485 | data->bytes_xfered = 0; | |
1486 | kfree(buf); | |
1487 | return 0; | |
1488 | } else if (actual_length < linear_length) { | |
1489 | cmd->error = -EREMOTEIO; | |
1490 | data->bytes_xfered = 0; | |
1491 | kfree(buf); | |
1492 | return 0; | |
1493 | } else { | |
1494 | sg_copy_from_buffer(data->sg, data->sg_len, buf, | |
1495 | linear_length); | |
1496 | kfree(buf); | |
1497 | data->bytes_xfered = vub300->datasize; | |
1498 | return linear_length; | |
1499 | } | |
1500 | } else { | |
1501 | cmd->error = -ENOMEM; | |
1502 | data->bytes_xfered = 0; | |
1503 | return 0; | |
1504 | } | |
1505 | } | |
1506 | } | |
1507 | ||
1508 | static int __command_write_data(struct vub300_mmc_host *vub300, | |
1509 | struct mmc_command *cmd, struct mmc_data *data) | |
1510 | { | |
1511 | /* cmd_mutex is held by vub300_cmndwork_thread */ | |
1512 | unsigned pipe = usb_sndbulkpipe(vub300->udev, vub300->data_out_ep); | |
1513 | int linear_length = vub300->datasize; | |
1514 | int modulo_64_length = linear_length & 0x003F; | |
1515 | int modulo_512_length = linear_length & 0x01FF; | |
1516 | if (linear_length < 64) { | |
1517 | int result; | |
1518 | int actual_length; | |
1519 | sg_copy_to_buffer(data->sg, data->sg_len, | |
1520 | vub300->padded_buffer, | |
1521 | sizeof(vub300->padded_buffer)); | |
1522 | memset(vub300->padded_buffer + linear_length, 0, | |
1523 | sizeof(vub300->padded_buffer) - linear_length); | |
1524 | result = vub300_usb_bulk_msg(vub300, pipe, vub300->padded_buffer, | |
1525 | sizeof(vub300->padded_buffer), | |
1526 | &actual_length, 2000 + | |
1527 | (sizeof(vub300->padded_buffer) / | |
1528 | 16384)); | |
1529 | if (result < 0) { | |
1530 | cmd->error = result; | |
1531 | data->bytes_xfered = 0; | |
1532 | } else { | |
1533 | data->bytes_xfered = vub300->datasize; | |
1534 | } | |
1535 | } else if ((!vub300->large_usb_packets && (0 < modulo_64_length)) || | |
1536 | (vub300->large_usb_packets && (64 > modulo_512_length)) | |
1537 | ) { /* don't you just love these work-rounds */ | |
1538 | int padded_length = ((63 + linear_length) >> 6) << 6; | |
1539 | u8 *buf = kmalloc(padded_length, GFP_KERNEL); | |
1540 | if (buf) { | |
1541 | int result; | |
1542 | int actual_length; | |
1543 | sg_copy_to_buffer(data->sg, data->sg_len, buf, | |
1544 | padded_length); | |
1545 | memset(buf + linear_length, 0, | |
1546 | padded_length - linear_length); | |
1547 | result = | |
1548 | vub300_usb_bulk_msg(vub300, pipe, buf, | |
1549 | padded_length, &actual_length, | |
1550 | 2000 + padded_length / 16384); | |
1551 | kfree(buf); | |
1552 | if (result < 0) { | |
1553 | cmd->error = result; | |
1554 | data->bytes_xfered = 0; | |
1555 | } else { | |
1556 | data->bytes_xfered = vub300->datasize; | |
1557 | } | |
1558 | } else { | |
1559 | cmd->error = -ENOMEM; | |
1560 | data->bytes_xfered = 0; | |
1561 | } | |
1562 | } else { /* no data padding required */ | |
1563 | int result; | |
1564 | unsigned char buf[64 * 4]; | |
1565 | sg_copy_to_buffer(data->sg, data->sg_len, buf, sizeof(buf)); | |
1566 | result = usb_sg_init(&vub300->sg_request, vub300->udev, | |
1567 | pipe, 0, data->sg, | |
1568 | data->sg_len, 0, GFP_KERNEL); | |
1569 | if (result < 0) { | |
1570 | usb_unlink_urb(vub300->command_out_urb); | |
1571 | usb_unlink_urb(vub300->command_res_urb); | |
1572 | cmd->error = result; | |
1573 | data->bytes_xfered = 0; | |
1574 | } else { | |
1575 | vub300->sg_transfer_timer.expires = | |
1576 | jiffies + msecs_to_jiffies(2000 + | |
1577 | linear_length / 16384); | |
1578 | add_timer(&vub300->sg_transfer_timer); | |
1579 | usb_sg_wait(&vub300->sg_request); | |
1580 | if (cmd->error) { | |
1581 | data->bytes_xfered = 0; | |
1582 | } else { | |
1583 | del_timer(&vub300->sg_transfer_timer); | |
1584 | if (vub300->sg_request.status < 0) { | |
1585 | cmd->error = vub300->sg_request.status; | |
1586 | data->bytes_xfered = 0; | |
1587 | } else { | |
1588 | data->bytes_xfered = vub300->datasize; | |
1589 | } | |
1590 | } | |
1591 | } | |
1592 | } | |
1593 | return linear_length; | |
1594 | } | |
1595 | ||
1596 | static void __vub300_command_response(struct vub300_mmc_host *vub300, | |
1597 | struct mmc_command *cmd, | |
1598 | struct mmc_data *data, int data_length) | |
1599 | { | |
1600 | /* cmd_mutex is held by vub300_cmndwork_thread */ | |
1601 | long respretval; | |
1602 | int msec_timeout = 1000 + data_length / 4; | |
1603 | respretval = | |
1604 | wait_for_completion_timeout(&vub300->command_complete, | |
1605 | msecs_to_jiffies(msec_timeout)); | |
1606 | if (respretval == 0) { /* TIMED OUT */ | |
1607 | /* we don't know which of "out" and "res" if any failed */ | |
1608 | int result; | |
1609 | vub300->usb_timed_out = 1; | |
1610 | usb_kill_urb(vub300->command_out_urb); | |
1611 | usb_kill_urb(vub300->command_res_urb); | |
1612 | cmd->error = -ETIMEDOUT; | |
1613 | result = usb_lock_device_for_reset(vub300->udev, | |
1614 | vub300->interface); | |
1615 | if (result == 0) { | |
1616 | result = usb_reset_device(vub300->udev); | |
1617 | usb_unlock_device(vub300->udev); | |
1618 | } | |
1619 | } else if (respretval < 0) { | |
1620 | /* we don't know which of "out" and "res" if any failed */ | |
1621 | usb_kill_urb(vub300->command_out_urb); | |
1622 | usb_kill_urb(vub300->command_res_urb); | |
1623 | cmd->error = respretval; | |
1624 | } else if (cmd->error) { | |
1625 | /* | |
dbc6221b JP |
1626 | * the error occurred sending the command |
1627 | * or receiving the response | |
88095e7b TO |
1628 | */ |
1629 | } else if (vub300->command_out_urb->status) { | |
1630 | vub300->usb_transport_fail = vub300->command_out_urb->status; | |
1631 | cmd->error = -EPROTO == vub300->command_out_urb->status ? | |
1632 | -ESHUTDOWN : vub300->command_out_urb->status; | |
1633 | } else if (vub300->command_res_urb->status) { | |
1634 | vub300->usb_transport_fail = vub300->command_res_urb->status; | |
1635 | cmd->error = -EPROTO == vub300->command_res_urb->status ? | |
1636 | -ESHUTDOWN : vub300->command_res_urb->status; | |
1637 | } else if (vub300->resp.common.header_type == 0x00) { | |
1638 | /* | |
1639 | * the command completed successfully | |
1640 | * and there was no piggybacked data | |
1641 | */ | |
1642 | } else if (vub300->resp.common.header_type == RESPONSE_ERROR) { | |
1643 | cmd->error = | |
1644 | vub300_response_error(vub300->resp.error.error_code); | |
1645 | if (vub300->data) | |
1646 | usb_sg_cancel(&vub300->sg_request); | |
1647 | } else if (vub300->resp.common.header_type == RESPONSE_PIGGYBACKED) { | |
1648 | int offloaded_data_length = | |
1649 | vub300->resp.common.header_size - | |
1650 | sizeof(struct sd_register_header); | |
1651 | int register_count = offloaded_data_length >> 3; | |
1652 | int ri = 0; | |
1653 | while (register_count--) { | |
1654 | add_offloaded_reg(vub300, &vub300->resp.pig.reg[ri]); | |
1655 | ri += 1; | |
1656 | } | |
1657 | vub300->resp.common.header_size = | |
1658 | sizeof(struct sd_register_header); | |
1659 | vub300->resp.common.header_type = 0x00; | |
1660 | cmd->error = 0; | |
1661 | } else if (vub300->resp.common.header_type == RESPONSE_PIG_DISABLED) { | |
1662 | int offloaded_data_length = | |
1663 | vub300->resp.common.header_size - | |
1664 | sizeof(struct sd_register_header); | |
1665 | int register_count = offloaded_data_length >> 3; | |
1666 | int ri = 0; | |
1667 | while (register_count--) { | |
1668 | add_offloaded_reg(vub300, &vub300->resp.pig.reg[ri]); | |
1669 | ri += 1; | |
1670 | } | |
1671 | mutex_lock(&vub300->irq_mutex); | |
1672 | if (vub300->irqs_queued) { | |
1673 | vub300->irqs_queued += 1; | |
1674 | } else if (vub300->irq_enabled) { | |
1675 | vub300->irqs_queued += 1; | |
1676 | vub300_queue_poll_work(vub300, 0); | |
1677 | } else { | |
1678 | vub300->irqs_queued += 1; | |
1679 | } | |
1680 | vub300->irq_disabled = 1; | |
1681 | mutex_unlock(&vub300->irq_mutex); | |
1682 | vub300->resp.common.header_size = | |
1683 | sizeof(struct sd_register_header); | |
1684 | vub300->resp.common.header_type = 0x00; | |
1685 | cmd->error = 0; | |
1686 | } else if (vub300->resp.common.header_type == RESPONSE_PIG_ENABLED) { | |
1687 | int offloaded_data_length = | |
1688 | vub300->resp.common.header_size - | |
1689 | sizeof(struct sd_register_header); | |
1690 | int register_count = offloaded_data_length >> 3; | |
1691 | int ri = 0; | |
1692 | while (register_count--) { | |
1693 | add_offloaded_reg(vub300, &vub300->resp.pig.reg[ri]); | |
1694 | ri += 1; | |
1695 | } | |
1696 | mutex_lock(&vub300->irq_mutex); | |
1697 | if (vub300->irqs_queued) { | |
1698 | vub300->irqs_queued += 1; | |
1699 | } else if (vub300->irq_enabled) { | |
1700 | vub300->irqs_queued += 1; | |
1701 | vub300_queue_poll_work(vub300, 0); | |
1702 | } else { | |
1703 | vub300->irqs_queued += 1; | |
1704 | } | |
1705 | vub300->irq_disabled = 0; | |
1706 | mutex_unlock(&vub300->irq_mutex); | |
1707 | vub300->resp.common.header_size = | |
1708 | sizeof(struct sd_register_header); | |
1709 | vub300->resp.common.header_type = 0x00; | |
1710 | cmd->error = 0; | |
1711 | } else { | |
1712 | cmd->error = -EINVAL; | |
1713 | } | |
1714 | } | |
1715 | ||
1716 | static void construct_request_response(struct vub300_mmc_host *vub300, | |
1717 | struct mmc_command *cmd) | |
1718 | { | |
1719 | int resp_len = vub300->resp_len; | |
1720 | int less_cmd = (17 == resp_len) ? resp_len : resp_len - 1; | |
1721 | int bytes = 3 & less_cmd; | |
1722 | int words = less_cmd >> 2; | |
1723 | u8 *r = vub300->resp.response.command_response; | |
1724 | if (bytes == 3) { | |
1725 | cmd->resp[words] = (r[1 + (words << 2)] << 24) | |
1726 | | (r[2 + (words << 2)] << 16) | |
1727 | | (r[3 + (words << 2)] << 8); | |
1728 | } else if (bytes == 2) { | |
1729 | cmd->resp[words] = (r[1 + (words << 2)] << 24) | |
1730 | | (r[2 + (words << 2)] << 16); | |
1731 | } else if (bytes == 1) { | |
1732 | cmd->resp[words] = (r[1 + (words << 2)] << 24); | |
1733 | } | |
1734 | while (words-- > 0) { | |
1735 | cmd->resp[words] = (r[1 + (words << 2)] << 24) | |
1736 | | (r[2 + (words << 2)] << 16) | |
1737 | | (r[3 + (words << 2)] << 8) | |
1738 | | (r[4 + (words << 2)] << 0); | |
1739 | } | |
1740 | if ((cmd->opcode == 53) && (0x000000FF & cmd->resp[0])) | |
1741 | cmd->resp[0] &= 0xFFFFFF00; | |
1742 | } | |
1743 | ||
1744 | /* this thread runs only when there is an upper level command req outstanding */ | |
1745 | static void vub300_cmndwork_thread(struct work_struct *work) | |
1746 | { | |
1747 | struct vub300_mmc_host *vub300 = | |
1748 | container_of(work, struct vub300_mmc_host, cmndwork); | |
1749 | if (!vub300->interface) { | |
1750 | kref_put(&vub300->kref, vub300_delete); | |
1751 | return; | |
1752 | } else { | |
1753 | struct mmc_request *req = vub300->req; | |
1754 | struct mmc_command *cmd = vub300->cmd; | |
1755 | struct mmc_data *data = vub300->data; | |
1756 | int data_length; | |
1757 | mutex_lock(&vub300->cmd_mutex); | |
1758 | init_completion(&vub300->command_complete); | |
1759 | if (likely(vub300->vub_name[0]) || !vub300->mmc->card || | |
1760 | !mmc_card_present(vub300->mmc->card)) { | |
1761 | /* | |
1762 | * the name of the EMPTY Pseudo firmware file | |
1763 | * is used as a flag to indicate that the file | |
1764 | * has been already downloaded to the VUB300 chip | |
1765 | */ | |
1766 | } else if (0 == vub300->mmc->card->sdio_funcs) { | |
1767 | strncpy(vub300->vub_name, "SD memory device", | |
1768 | sizeof(vub300->vub_name)); | |
1769 | } else { | |
1770 | download_offload_pseudocode(vub300); | |
1771 | } | |
1772 | send_command(vub300); | |
1773 | if (!data) | |
1774 | data_length = 0; | |
1775 | else if (MMC_DATA_READ & data->flags) | |
1776 | data_length = __command_read_data(vub300, cmd, data); | |
1777 | else | |
1778 | data_length = __command_write_data(vub300, cmd, data); | |
1779 | __vub300_command_response(vub300, cmd, data, data_length); | |
1780 | vub300->req = NULL; | |
1781 | vub300->cmd = NULL; | |
1782 | vub300->data = NULL; | |
1783 | if (cmd->error) { | |
1784 | if (cmd->error == -ENOMEDIUM) | |
1785 | check_vub300_port_status(vub300); | |
1786 | mutex_unlock(&vub300->cmd_mutex); | |
1787 | mmc_request_done(vub300->mmc, req); | |
1788 | kref_put(&vub300->kref, vub300_delete); | |
1789 | return; | |
1790 | } else { | |
1791 | construct_request_response(vub300, cmd); | |
1792 | vub300->resp_len = 0; | |
1793 | mutex_unlock(&vub300->cmd_mutex); | |
1794 | kref_put(&vub300->kref, vub300_delete); | |
1795 | mmc_request_done(vub300->mmc, req); | |
1796 | return; | |
1797 | } | |
1798 | } | |
1799 | } | |
1800 | ||
1801 | static int examine_cyclic_buffer(struct vub300_mmc_host *vub300, | |
1802 | struct mmc_command *cmd, u8 Function) | |
1803 | { | |
1804 | /* cmd_mutex is held by vub300_mmc_request */ | |
1805 | u8 cmd0 = 0xFF & (cmd->arg >> 24); | |
1806 | u8 cmd1 = 0xFF & (cmd->arg >> 16); | |
1807 | u8 cmd2 = 0xFF & (cmd->arg >> 8); | |
1808 | u8 cmd3 = 0xFF & (cmd->arg >> 0); | |
1809 | int first = MAXREGMASK & vub300->fn[Function].offload_point; | |
1810 | struct offload_registers_access *rf = &vub300->fn[Function].reg[first]; | |
1811 | if (cmd0 == rf->command_byte[0] && | |
1812 | cmd1 == rf->command_byte[1] && | |
1813 | cmd2 == rf->command_byte[2] && | |
1814 | cmd3 == rf->command_byte[3]) { | |
1815 | u8 checksum = 0x00; | |
1816 | cmd->resp[1] = checksum << 24; | |
1817 | cmd->resp[0] = (rf->Respond_Byte[0] << 24) | |
1818 | | (rf->Respond_Byte[1] << 16) | |
1819 | | (rf->Respond_Byte[2] << 8) | |
1820 | | (rf->Respond_Byte[3] << 0); | |
1821 | vub300->fn[Function].offload_point += 1; | |
1822 | vub300->fn[Function].offload_count -= 1; | |
1823 | vub300->total_offload_count -= 1; | |
1824 | return 1; | |
1825 | } else { | |
1826 | int delta = 1; /* because it does not match the first one */ | |
1827 | u8 register_count = vub300->fn[Function].offload_count - 1; | |
1828 | u32 register_point = vub300->fn[Function].offload_point + 1; | |
1829 | while (0 < register_count) { | |
1830 | int point = MAXREGMASK & register_point; | |
1831 | struct offload_registers_access *r = | |
1832 | &vub300->fn[Function].reg[point]; | |
1833 | if (cmd0 == r->command_byte[0] && | |
1834 | cmd1 == r->command_byte[1] && | |
1835 | cmd2 == r->command_byte[2] && | |
1836 | cmd3 == r->command_byte[3]) { | |
1837 | u8 checksum = 0x00; | |
1838 | cmd->resp[1] = checksum << 24; | |
1839 | cmd->resp[0] = (r->Respond_Byte[0] << 24) | |
1840 | | (r->Respond_Byte[1] << 16) | |
1841 | | (r->Respond_Byte[2] << 8) | |
1842 | | (r->Respond_Byte[3] << 0); | |
1843 | vub300->fn[Function].offload_point += delta; | |
1844 | vub300->fn[Function].offload_count -= delta; | |
1845 | vub300->total_offload_count -= delta; | |
1846 | return 1; | |
1847 | } else { | |
1848 | register_point += 1; | |
1849 | register_count -= 1; | |
1850 | delta += 1; | |
1851 | continue; | |
1852 | } | |
1853 | } | |
1854 | return 0; | |
1855 | } | |
1856 | } | |
1857 | ||
1858 | static int satisfy_request_from_offloaded_data(struct vub300_mmc_host *vub300, | |
1859 | struct mmc_command *cmd) | |
1860 | { | |
1861 | /* cmd_mutex is held by vub300_mmc_request */ | |
1862 | u8 regs = vub300->dynamic_register_count; | |
1863 | u8 i = 0; | |
1864 | u8 func = FUN(cmd); | |
1865 | u32 reg = REG(cmd); | |
1866 | while (0 < regs--) { | |
1867 | if ((vub300->sdio_register[i].func_num == func) && | |
1868 | (vub300->sdio_register[i].sdio_reg == reg)) { | |
1869 | if (!vub300->sdio_register[i].prepared) { | |
1870 | return 0; | |
1871 | } else if ((0x80000000 & cmd->arg) == 0x80000000) { | |
1872 | /* | |
1873 | * a write to a dynamic register | |
1874 | * nullifies our offloaded value | |
1875 | */ | |
1876 | vub300->sdio_register[i].prepared = 0; | |
1877 | return 0; | |
1878 | } else { | |
1879 | u8 checksum = 0x00; | |
1880 | u8 rsp0 = 0x00; | |
1881 | u8 rsp1 = 0x00; | |
1882 | u8 rsp2 = vub300->sdio_register[i].response; | |
1883 | u8 rsp3 = vub300->sdio_register[i].regvalue; | |
1884 | vub300->sdio_register[i].prepared = 0; | |
1885 | cmd->resp[1] = checksum << 24; | |
1886 | cmd->resp[0] = (rsp0 << 24) | |
1887 | | (rsp1 << 16) | |
1888 | | (rsp2 << 8) | |
1889 | | (rsp3 << 0); | |
1890 | return 1; | |
1891 | } | |
1892 | } else { | |
1893 | i += 1; | |
1894 | continue; | |
1895 | } | |
7eece8d0 | 1896 | } |
88095e7b TO |
1897 | if (vub300->total_offload_count == 0) |
1898 | return 0; | |
1899 | else if (vub300->fn[func].offload_count == 0) | |
1900 | return 0; | |
1901 | else | |
1902 | return examine_cyclic_buffer(vub300, cmd, func); | |
1903 | } | |
1904 | ||
1905 | static void vub300_mmc_request(struct mmc_host *mmc, struct mmc_request *req) | |
1906 | { /* NOT irq */ | |
1907 | struct mmc_command *cmd = req->cmd; | |
1908 | struct vub300_mmc_host *vub300 = mmc_priv(mmc); | |
1909 | if (!vub300->interface) { | |
1910 | cmd->error = -ESHUTDOWN; | |
1911 | mmc_request_done(mmc, req); | |
1912 | return; | |
1913 | } else { | |
1914 | struct mmc_data *data = req->data; | |
1915 | if (!vub300->card_powered) { | |
1916 | cmd->error = -ENOMEDIUM; | |
1917 | mmc_request_done(mmc, req); | |
1918 | return; | |
1919 | } | |
1920 | if (!vub300->card_present) { | |
1921 | cmd->error = -ENOMEDIUM; | |
1922 | mmc_request_done(mmc, req); | |
1923 | return; | |
1924 | } | |
1925 | if (vub300->usb_transport_fail) { | |
1926 | cmd->error = vub300->usb_transport_fail; | |
1927 | mmc_request_done(mmc, req); | |
1928 | return; | |
1929 | } | |
1930 | if (!vub300->interface) { | |
1931 | cmd->error = -ENODEV; | |
1932 | mmc_request_done(mmc, req); | |
1933 | return; | |
1934 | } | |
1935 | kref_get(&vub300->kref); | |
1936 | mutex_lock(&vub300->cmd_mutex); | |
1937 | mod_timer(&vub300->inactivity_timer, jiffies + HZ); | |
1938 | /* | |
1939 | * for performance we have to return immediately | |
1940 | * if the requested data has been offloaded | |
1941 | */ | |
1942 | if (cmd->opcode == 52 && | |
1943 | satisfy_request_from_offloaded_data(vub300, cmd)) { | |
1944 | cmd->error = 0; | |
1945 | mutex_unlock(&vub300->cmd_mutex); | |
1946 | kref_put(&vub300->kref, vub300_delete); | |
1947 | mmc_request_done(mmc, req); | |
1948 | return; | |
1949 | } else { | |
1950 | vub300->cmd = cmd; | |
1951 | vub300->req = req; | |
1952 | vub300->data = data; | |
1953 | if (data) | |
1954 | vub300->datasize = data->blksz * data->blocks; | |
1955 | else | |
1956 | vub300->datasize = 0; | |
1957 | vub300_queue_cmnd_work(vub300); | |
1958 | mutex_unlock(&vub300->cmd_mutex); | |
1959 | kref_put(&vub300->kref, vub300_delete); | |
1960 | /* | |
1961 | * the kernel lock diagnostics complain | |
1962 | * if the cmd_mutex * is "passed on" | |
1963 | * to the cmndwork thread, | |
1964 | * so we must release it now | |
1965 | * and re-acquire it in the cmndwork thread | |
1966 | */ | |
1967 | } | |
1968 | } | |
1969 | } | |
1970 | ||
1971 | static void __set_clock_speed(struct vub300_mmc_host *vub300, u8 buf[8], | |
1972 | struct mmc_ios *ios) | |
1973 | { | |
1974 | int buf_array_size = 8; /* ARRAY_SIZE(buf) does not work !!! */ | |
1975 | int retval; | |
1976 | u32 kHzClock; | |
1977 | if (ios->clock >= 48000000) | |
1978 | kHzClock = 48000; | |
1979 | else if (ios->clock >= 24000000) | |
1980 | kHzClock = 24000; | |
1981 | else if (ios->clock >= 20000000) | |
1982 | kHzClock = 20000; | |
1983 | else if (ios->clock >= 15000000) | |
1984 | kHzClock = 15000; | |
1985 | else if (ios->clock >= 200000) | |
1986 | kHzClock = 200; | |
1987 | else | |
1988 | kHzClock = 0; | |
1989 | { | |
1990 | int i; | |
1991 | u64 c = kHzClock; | |
1992 | for (i = 0; i < buf_array_size; i++) { | |
1993 | buf[i] = c; | |
1994 | c >>= 8; | |
1995 | } | |
1996 | } | |
1997 | retval = | |
1998 | usb_control_msg(vub300->udev, usb_sndctrlpipe(vub300->udev, 0), | |
1999 | SET_CLOCK_SPEED, | |
2000 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
2001 | 0x00, 0x00, buf, buf_array_size, HZ); | |
2002 | if (retval != 8) { | |
2003 | dev_err(&vub300->udev->dev, "SET_CLOCK_SPEED" | |
2004 | " %dkHz failed with retval=%d\n", kHzClock, retval); | |
2005 | } else { | |
2006 | dev_dbg(&vub300->udev->dev, "SET_CLOCK_SPEED" | |
2007 | " %dkHz\n", kHzClock); | |
2008 | } | |
2009 | } | |
2010 | ||
2011 | static void vub300_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) | |
2012 | { /* NOT irq */ | |
2013 | struct vub300_mmc_host *vub300 = mmc_priv(mmc); | |
2014 | if (!vub300->interface) | |
2015 | return; | |
2016 | kref_get(&vub300->kref); | |
2017 | mutex_lock(&vub300->cmd_mutex); | |
2018 | if ((ios->power_mode == MMC_POWER_OFF) && vub300->card_powered) { | |
2019 | vub300->card_powered = 0; | |
2020 | usb_control_msg(vub300->udev, usb_sndctrlpipe(vub300->udev, 0), | |
2021 | SET_SD_POWER, | |
2022 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
2023 | 0x0000, 0x0000, NULL, 0, HZ); | |
2024 | /* must wait for the VUB300 u-proc to boot up */ | |
2025 | msleep(600); | |
2026 | } else if ((ios->power_mode == MMC_POWER_UP) && !vub300->card_powered) { | |
2027 | usb_control_msg(vub300->udev, usb_sndctrlpipe(vub300->udev, 0), | |
2028 | SET_SD_POWER, | |
2029 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
2030 | 0x0001, 0x0000, NULL, 0, HZ); | |
2031 | msleep(600); | |
2032 | vub300->card_powered = 1; | |
2033 | } else if (ios->power_mode == MMC_POWER_ON) { | |
2034 | u8 *buf = kmalloc(8, GFP_KERNEL); | |
2035 | if (buf) { | |
2036 | __set_clock_speed(vub300, buf, ios); | |
2037 | kfree(buf); | |
2038 | } | |
2039 | } else { | |
2040 | /* this should mean no change of state */ | |
2041 | } | |
2042 | mutex_unlock(&vub300->cmd_mutex); | |
2043 | kref_put(&vub300->kref, vub300_delete); | |
2044 | } | |
2045 | ||
2046 | static int vub300_mmc_get_ro(struct mmc_host *mmc) | |
2047 | { | |
2048 | struct vub300_mmc_host *vub300 = mmc_priv(mmc); | |
2049 | return vub300->read_only; | |
2050 | } | |
2051 | ||
2052 | static void vub300_enable_sdio_irq(struct mmc_host *mmc, int enable) | |
2053 | { /* NOT irq */ | |
2054 | struct vub300_mmc_host *vub300 = mmc_priv(mmc); | |
2055 | if (!vub300->interface) | |
2056 | return; | |
2057 | kref_get(&vub300->kref); | |
2058 | if (enable) { | |
2059 | mutex_lock(&vub300->irq_mutex); | |
2060 | if (vub300->irqs_queued) { | |
2061 | vub300->irqs_queued -= 1; | |
2062 | mmc_signal_sdio_irq(vub300->mmc); | |
2063 | } else if (vub300->irq_disabled) { | |
2064 | vub300->irq_disabled = 0; | |
2065 | vub300->irq_enabled = 1; | |
2066 | vub300_queue_poll_work(vub300, 0); | |
2067 | } else if (vub300->irq_enabled) { | |
2068 | /* this should not happen, so we will just ignore it */ | |
2069 | } else { | |
2070 | vub300->irq_enabled = 1; | |
2071 | vub300_queue_poll_work(vub300, 0); | |
2072 | } | |
2073 | mutex_unlock(&vub300->irq_mutex); | |
2074 | } else { | |
2075 | vub300->irq_enabled = 0; | |
2076 | } | |
2077 | kref_put(&vub300->kref, vub300_delete); | |
2078 | } | |
2079 | ||
37c955a7 | 2080 | static void vub300_init_card(struct mmc_host *mmc, struct mmc_card *card) |
88095e7b TO |
2081 | { /* NOT irq */ |
2082 | struct vub300_mmc_host *vub300 = mmc_priv(mmc); | |
2083 | dev_info(&vub300->udev->dev, "NO host QUIRKS for this card\n"); | |
2084 | } | |
2085 | ||
2086 | static struct mmc_host_ops vub300_mmc_ops = { | |
2087 | .request = vub300_mmc_request, | |
2088 | .set_ios = vub300_mmc_set_ios, | |
2089 | .get_ro = vub300_mmc_get_ro, | |
2090 | .enable_sdio_irq = vub300_enable_sdio_irq, | |
2091 | .init_card = vub300_init_card, | |
2092 | }; | |
2093 | ||
2094 | static int vub300_probe(struct usb_interface *interface, | |
2095 | const struct usb_device_id *id) | |
2096 | { /* NOT irq */ | |
c44048de | 2097 | struct vub300_mmc_host *vub300; |
88095e7b TO |
2098 | struct usb_host_interface *iface_desc; |
2099 | struct usb_device *udev = usb_get_dev(interface_to_usbdev(interface)); | |
2100 | int i; | |
2101 | int retval = -ENOMEM; | |
2102 | struct urb *command_out_urb; | |
2103 | struct urb *command_res_urb; | |
2104 | struct mmc_host *mmc; | |
2105 | char manufacturer[48]; | |
2106 | char product[32]; | |
2107 | char serial_number[32]; | |
2108 | usb_string(udev, udev->descriptor.iManufacturer, manufacturer, | |
2109 | sizeof(manufacturer)); | |
2110 | usb_string(udev, udev->descriptor.iProduct, product, sizeof(product)); | |
2111 | usb_string(udev, udev->descriptor.iSerialNumber, serial_number, | |
2112 | sizeof(serial_number)); | |
2113 | dev_info(&udev->dev, "probing VID:PID(%04X:%04X) %s %s %s\n", | |
2114 | udev->descriptor.idVendor, udev->descriptor.idProduct, | |
2115 | manufacturer, product, serial_number); | |
2116 | command_out_urb = usb_alloc_urb(0, GFP_KERNEL); | |
2117 | if (!command_out_urb) { | |
2118 | retval = -ENOMEM; | |
c44048de | 2119 | dev_err(&udev->dev, "not enough memory for command_out_urb\n"); |
88095e7b TO |
2120 | goto error0; |
2121 | } | |
2122 | command_res_urb = usb_alloc_urb(0, GFP_KERNEL); | |
2123 | if (!command_res_urb) { | |
2124 | retval = -ENOMEM; | |
c44048de | 2125 | dev_err(&udev->dev, "not enough memory for command_res_urb\n"); |
88095e7b TO |
2126 | goto error1; |
2127 | } | |
2128 | /* this also allocates memory for our VUB300 mmc host device */ | |
2129 | mmc = mmc_alloc_host(sizeof(struct vub300_mmc_host), &udev->dev); | |
2130 | if (!mmc) { | |
2131 | retval = -ENOMEM; | |
c44048de | 2132 | dev_err(&udev->dev, "not enough memory for the mmc_host\n"); |
88095e7b TO |
2133 | goto error4; |
2134 | } | |
2135 | /* MMC core transfer sizes tunable parameters */ | |
2136 | mmc->caps = 0; | |
2137 | if (!force_1_bit_data_xfers) | |
2138 | mmc->caps |= MMC_CAP_4_BIT_DATA; | |
2139 | if (!force_polling_for_irqs) | |
2140 | mmc->caps |= MMC_CAP_SDIO_IRQ; | |
2141 | mmc->caps &= ~MMC_CAP_NEEDS_POLL; | |
2142 | /* | |
2143 | * MMC_CAP_NEEDS_POLL causes core.c:mmc_rescan() to poll | |
2144 | * for devices which results in spurious CMD7's being | |
2145 | * issued which stops some SDIO cards from working | |
2146 | */ | |
2147 | if (limit_speed_to_24_MHz) { | |
2148 | mmc->caps |= MMC_CAP_MMC_HIGHSPEED; | |
2149 | mmc->caps |= MMC_CAP_SD_HIGHSPEED; | |
2150 | mmc->f_max = 24000000; | |
2151 | dev_info(&udev->dev, "limiting SDIO speed to 24_MHz\n"); | |
2152 | } else { | |
2153 | mmc->caps |= MMC_CAP_MMC_HIGHSPEED; | |
2154 | mmc->caps |= MMC_CAP_SD_HIGHSPEED; | |
2155 | mmc->f_max = 48000000; | |
2156 | } | |
2157 | mmc->f_min = 200000; | |
2158 | mmc->max_blk_count = 511; | |
2159 | mmc->max_blk_size = 512; | |
2160 | mmc->max_segs = 128; | |
2161 | if (force_max_req_size) | |
2162 | mmc->max_req_size = force_max_req_size * 1024; | |
2163 | else | |
2164 | mmc->max_req_size = 64 * 1024; | |
2165 | mmc->max_seg_size = mmc->max_req_size; | |
2166 | mmc->ocr_avail = 0; | |
2167 | mmc->ocr_avail |= MMC_VDD_165_195; | |
2168 | mmc->ocr_avail |= MMC_VDD_20_21; | |
2169 | mmc->ocr_avail |= MMC_VDD_21_22; | |
2170 | mmc->ocr_avail |= MMC_VDD_22_23; | |
2171 | mmc->ocr_avail |= MMC_VDD_23_24; | |
2172 | mmc->ocr_avail |= MMC_VDD_24_25; | |
2173 | mmc->ocr_avail |= MMC_VDD_25_26; | |
2174 | mmc->ocr_avail |= MMC_VDD_26_27; | |
2175 | mmc->ocr_avail |= MMC_VDD_27_28; | |
2176 | mmc->ocr_avail |= MMC_VDD_28_29; | |
2177 | mmc->ocr_avail |= MMC_VDD_29_30; | |
2178 | mmc->ocr_avail |= MMC_VDD_30_31; | |
2179 | mmc->ocr_avail |= MMC_VDD_31_32; | |
2180 | mmc->ocr_avail |= MMC_VDD_32_33; | |
2181 | mmc->ocr_avail |= MMC_VDD_33_34; | |
2182 | mmc->ocr_avail |= MMC_VDD_34_35; | |
2183 | mmc->ocr_avail |= MMC_VDD_35_36; | |
2184 | mmc->ops = &vub300_mmc_ops; | |
2185 | vub300 = mmc_priv(mmc); | |
2186 | vub300->mmc = mmc; | |
2187 | vub300->card_powered = 0; | |
2188 | vub300->bus_width = 0; | |
2189 | vub300->cmnd.head.block_size[0] = 0x00; | |
2190 | vub300->cmnd.head.block_size[1] = 0x00; | |
2191 | vub300->app_spec = 0; | |
2192 | mutex_init(&vub300->cmd_mutex); | |
2193 | mutex_init(&vub300->irq_mutex); | |
2194 | vub300->command_out_urb = command_out_urb; | |
2195 | vub300->command_res_urb = command_res_urb; | |
2196 | vub300->usb_timed_out = 0; | |
2197 | vub300->dynamic_register_count = 0; | |
2198 | ||
2199 | for (i = 0; i < ARRAY_SIZE(vub300->fn); i++) { | |
2200 | vub300->fn[i].offload_point = 0; | |
2201 | vub300->fn[i].offload_count = 0; | |
2202 | } | |
2203 | ||
2204 | vub300->total_offload_count = 0; | |
2205 | vub300->irq_enabled = 0; | |
2206 | vub300->irq_disabled = 0; | |
2207 | vub300->irqs_queued = 0; | |
2208 | ||
2209 | for (i = 0; i < ARRAY_SIZE(vub300->sdio_register); i++) | |
2210 | vub300->sdio_register[i++].activate = 0; | |
2211 | ||
2212 | vub300->udev = udev; | |
2213 | vub300->interface = interface; | |
2214 | vub300->cmnd_res_ep = 0; | |
2215 | vub300->cmnd_out_ep = 0; | |
2216 | vub300->data_inp_ep = 0; | |
2217 | vub300->data_out_ep = 0; | |
2218 | ||
2219 | for (i = 0; i < ARRAY_SIZE(vub300->fbs); i++) | |
2220 | vub300->fbs[i] = 512; | |
2221 | ||
2222 | /* | |
2223 | * set up the endpoint information | |
2224 | * | |
2225 | * use the first pair of bulk-in and bulk-out | |
2226 | * endpoints for Command/Response+Interrupt | |
2227 | * | |
2228 | * use the second pair of bulk-in and bulk-out | |
2229 | * endpoints for Data In/Out | |
2230 | */ | |
2231 | vub300->large_usb_packets = 0; | |
2232 | iface_desc = interface->cur_altsetting; | |
2233 | for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { | |
2234 | struct usb_endpoint_descriptor *endpoint = | |
2235 | &iface_desc->endpoint[i].desc; | |
2236 | dev_info(&vub300->udev->dev, | |
2237 | "vub300 testing %s EndPoint(%d) %02X\n", | |
2238 | usb_endpoint_is_bulk_in(endpoint) ? "BULK IN" : | |
2239 | usb_endpoint_is_bulk_out(endpoint) ? "BULK OUT" : | |
2240 | "UNKNOWN", i, endpoint->bEndpointAddress); | |
2241 | if (endpoint->wMaxPacketSize > 64) | |
2242 | vub300->large_usb_packets = 1; | |
2243 | if (usb_endpoint_is_bulk_in(endpoint)) { | |
2244 | if (!vub300->cmnd_res_ep) { | |
2245 | vub300->cmnd_res_ep = | |
2246 | endpoint->bEndpointAddress; | |
2247 | } else if (!vub300->data_inp_ep) { | |
2248 | vub300->data_inp_ep = | |
2249 | endpoint->bEndpointAddress; | |
2250 | } else { | |
2251 | dev_warn(&vub300->udev->dev, | |
2252 | "ignoring" | |
2253 | " unexpected bulk_in endpoint"); | |
2254 | } | |
2255 | } else if (usb_endpoint_is_bulk_out(endpoint)) { | |
2256 | if (!vub300->cmnd_out_ep) { | |
2257 | vub300->cmnd_out_ep = | |
2258 | endpoint->bEndpointAddress; | |
2259 | } else if (!vub300->data_out_ep) { | |
2260 | vub300->data_out_ep = | |
2261 | endpoint->bEndpointAddress; | |
2262 | } else { | |
2263 | dev_warn(&vub300->udev->dev, | |
2264 | "ignoring" | |
2265 | " unexpected bulk_out endpoint"); | |
2266 | } | |
2267 | } else { | |
2268 | dev_warn(&vub300->udev->dev, | |
2269 | "vub300 ignoring EndPoint(%d) %02X", i, | |
2270 | endpoint->bEndpointAddress); | |
2271 | } | |
2272 | } | |
2273 | if (vub300->cmnd_res_ep && vub300->cmnd_out_ep && | |
2274 | vub300->data_inp_ep && vub300->data_out_ep) { | |
2275 | dev_info(&vub300->udev->dev, | |
2276 | "vub300 %s packets" | |
2277 | " using EndPoints %02X %02X %02X %02X\n", | |
2278 | vub300->large_usb_packets ? "LARGE" : "SMALL", | |
2279 | vub300->cmnd_out_ep, vub300->cmnd_res_ep, | |
2280 | vub300->data_out_ep, vub300->data_inp_ep); | |
2281 | /* we have the expected EndPoints */ | |
2282 | } else { | |
2283 | dev_err(&vub300->udev->dev, | |
2284 | "Could not find two sets of bulk-in/out endpoint pairs\n"); | |
2285 | retval = -EINVAL; | |
2286 | goto error5; | |
2287 | } | |
2288 | retval = | |
2289 | usb_control_msg(vub300->udev, usb_rcvctrlpipe(vub300->udev, 0), | |
2290 | GET_HC_INF0, | |
2291 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
2292 | 0x0000, 0x0000, &vub300->hc_info, | |
2293 | sizeof(vub300->hc_info), HZ); | |
2294 | if (retval < 0) | |
2295 | goto error5; | |
2296 | retval = | |
2297 | usb_control_msg(vub300->udev, usb_rcvctrlpipe(vub300->udev, 0), | |
2298 | SET_ROM_WAIT_STATES, | |
2299 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
2300 | firmware_rom_wait_states, 0x0000, NULL, 0, HZ); | |
2301 | if (retval < 0) | |
2302 | goto error5; | |
2303 | dev_info(&vub300->udev->dev, | |
2304 | "operating_mode = %s %s %d MHz %s %d byte USB packets\n", | |
2305 | (mmc->caps & MMC_CAP_SDIO_IRQ) ? "IRQs" : "POLL", | |
2306 | (mmc->caps & MMC_CAP_4_BIT_DATA) ? "4-bit" : "1-bit", | |
2307 | mmc->f_max / 1000000, | |
2308 | pad_input_to_usb_pkt ? "padding input data to" : "with", | |
2309 | vub300->large_usb_packets ? 512 : 64); | |
2310 | retval = | |
2311 | usb_control_msg(vub300->udev, usb_rcvctrlpipe(vub300->udev, 0), | |
2312 | GET_SYSTEM_PORT_STATUS, | |
2313 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
2314 | 0x0000, 0x0000, &vub300->system_port_status, | |
2315 | sizeof(vub300->system_port_status), HZ); | |
2316 | if (retval < 0) { | |
2317 | goto error4; | |
2318 | } else if (sizeof(vub300->system_port_status) == retval) { | |
2319 | vub300->card_present = | |
2320 | (0x0001 & vub300->system_port_status.port_flags) ? 1 : 0; | |
2321 | vub300->read_only = | |
2322 | (0x0010 & vub300->system_port_status.port_flags) ? 1 : 0; | |
2323 | } else { | |
2324 | goto error4; | |
2325 | } | |
2326 | usb_set_intfdata(interface, vub300); | |
2327 | INIT_DELAYED_WORK(&vub300->pollwork, vub300_pollwork_thread); | |
2328 | INIT_WORK(&vub300->cmndwork, vub300_cmndwork_thread); | |
2329 | INIT_WORK(&vub300->deadwork, vub300_deadwork_thread); | |
2330 | kref_init(&vub300->kref); | |
2331 | init_timer(&vub300->sg_transfer_timer); | |
2332 | vub300->sg_transfer_timer.data = (unsigned long)vub300; | |
2333 | vub300->sg_transfer_timer.function = vub300_sg_timed_out; | |
2334 | kref_get(&vub300->kref); | |
2335 | init_timer(&vub300->inactivity_timer); | |
2336 | vub300->inactivity_timer.data = (unsigned long)vub300; | |
2337 | vub300->inactivity_timer.function = vub300_inactivity_timer_expired; | |
2338 | vub300->inactivity_timer.expires = jiffies + HZ; | |
2339 | add_timer(&vub300->inactivity_timer); | |
2340 | if (vub300->card_present) | |
2341 | dev_info(&vub300->udev->dev, | |
2342 | "USB vub300 remote SDIO host controller[%d]" | |
2343 | "connected with SD/SDIO card inserted\n", | |
2344 | interface_to_InterfaceNumber(interface)); | |
2345 | else | |
2346 | dev_info(&vub300->udev->dev, | |
2347 | "USB vub300 remote SDIO host controller[%d]" | |
2348 | "connected with no SD/SDIO card inserted\n", | |
2349 | interface_to_InterfaceNumber(interface)); | |
2350 | mmc_add_host(mmc); | |
2351 | return 0; | |
2352 | error5: | |
2353 | mmc_free_host(mmc); | |
2354 | /* | |
2355 | * and hence also frees vub300 | |
2356 | * which is contained at the end of struct mmc | |
2357 | */ | |
2358 | error4: | |
88095e7b | 2359 | usb_free_urb(command_res_urb); |
5fdb4505 JL |
2360 | error1: |
2361 | usb_free_urb(command_out_urb); | |
88095e7b | 2362 | error0: |
063f96c2 | 2363 | usb_put_dev(udev); |
88095e7b TO |
2364 | return retval; |
2365 | } | |
2366 | ||
2367 | static void vub300_disconnect(struct usb_interface *interface) | |
2368 | { /* NOT irq */ | |
2369 | struct vub300_mmc_host *vub300 = usb_get_intfdata(interface); | |
2370 | if (!vub300 || !vub300->mmc) { | |
2371 | return; | |
2372 | } else { | |
2373 | struct mmc_host *mmc = vub300->mmc; | |
2374 | if (!vub300->mmc) { | |
2375 | return; | |
2376 | } else { | |
2377 | int ifnum = interface_to_InterfaceNumber(interface); | |
2378 | usb_set_intfdata(interface, NULL); | |
2379 | /* prevent more I/O from starting */ | |
2380 | vub300->interface = NULL; | |
2381 | kref_put(&vub300->kref, vub300_delete); | |
2382 | mmc_remove_host(mmc); | |
2383 | pr_info("USB vub300 remote SDIO host controller[%d]" | |
2384 | " now disconnected", ifnum); | |
2385 | return; | |
2386 | } | |
2387 | } | |
2388 | } | |
2389 | ||
2390 | #ifdef CONFIG_PM | |
2391 | static int vub300_suspend(struct usb_interface *intf, pm_message_t message) | |
2392 | { | |
990b2993 | 2393 | return 0; |
88095e7b TO |
2394 | } |
2395 | ||
2396 | static int vub300_resume(struct usb_interface *intf) | |
2397 | { | |
990b2993 | 2398 | return 0; |
88095e7b TO |
2399 | } |
2400 | #else | |
2401 | #define vub300_suspend NULL | |
2402 | #define vub300_resume NULL | |
2403 | #endif | |
2404 | static int vub300_pre_reset(struct usb_interface *intf) | |
2405 | { /* NOT irq */ | |
2406 | struct vub300_mmc_host *vub300 = usb_get_intfdata(intf); | |
2407 | mutex_lock(&vub300->cmd_mutex); | |
2408 | return 0; | |
2409 | } | |
2410 | ||
2411 | static int vub300_post_reset(struct usb_interface *intf) | |
2412 | { /* NOT irq */ | |
2413 | struct vub300_mmc_host *vub300 = usb_get_intfdata(intf); | |
2414 | /* we are sure no URBs are active - no locking needed */ | |
2415 | vub300->errors = -EPIPE; | |
2416 | mutex_unlock(&vub300->cmd_mutex); | |
2417 | return 0; | |
2418 | } | |
2419 | ||
2420 | static struct usb_driver vub300_driver = { | |
2421 | .name = "vub300", | |
2422 | .probe = vub300_probe, | |
2423 | .disconnect = vub300_disconnect, | |
2424 | .suspend = vub300_suspend, | |
2425 | .resume = vub300_resume, | |
2426 | .pre_reset = vub300_pre_reset, | |
2427 | .post_reset = vub300_post_reset, | |
2428 | .id_table = vub300_table, | |
2429 | .supports_autosuspend = 1, | |
2430 | }; | |
2431 | ||
2432 | static int __init vub300_init(void) | |
2433 | { /* NOT irq */ | |
2434 | int result; | |
2435 | ||
2436 | pr_info("VUB300 Driver rom wait states = %02X irqpoll timeout = %04X", | |
2437 | firmware_rom_wait_states, 0x0FFFF & firmware_irqpoll_timeout); | |
2438 | cmndworkqueue = create_singlethread_workqueue("kvub300c"); | |
2439 | if (!cmndworkqueue) { | |
2440 | pr_err("not enough memory for the REQUEST workqueue"); | |
2441 | result = -ENOMEM; | |
2442 | goto out1; | |
2443 | } | |
2444 | pollworkqueue = create_singlethread_workqueue("kvub300p"); | |
2445 | if (!pollworkqueue) { | |
2446 | pr_err("not enough memory for the IRQPOLL workqueue"); | |
2447 | result = -ENOMEM; | |
2448 | goto out2; | |
2449 | } | |
2450 | deadworkqueue = create_singlethread_workqueue("kvub300d"); | |
2451 | if (!deadworkqueue) { | |
2452 | pr_err("not enough memory for the EXPIRED workqueue"); | |
2453 | result = -ENOMEM; | |
2454 | goto out3; | |
2455 | } | |
2456 | result = usb_register(&vub300_driver); | |
2457 | if (result) { | |
2458 | pr_err("usb_register failed. Error number %d", result); | |
2459 | goto out4; | |
2460 | } | |
2461 | return 0; | |
2462 | out4: | |
2463 | destroy_workqueue(deadworkqueue); | |
2464 | out3: | |
2465 | destroy_workqueue(pollworkqueue); | |
2466 | out2: | |
2467 | destroy_workqueue(cmndworkqueue); | |
2468 | out1: | |
2469 | return result; | |
2470 | } | |
2471 | ||
2472 | static void __exit vub300_exit(void) | |
2473 | { | |
2474 | usb_deregister(&vub300_driver); | |
2475 | flush_workqueue(cmndworkqueue); | |
2476 | flush_workqueue(pollworkqueue); | |
2477 | flush_workqueue(deadworkqueue); | |
2478 | destroy_workqueue(cmndworkqueue); | |
2479 | destroy_workqueue(pollworkqueue); | |
2480 | destroy_workqueue(deadworkqueue); | |
2481 | } | |
2482 | ||
2483 | module_init(vub300_init); | |
2484 | module_exit(vub300_exit); | |
2485 | ||
2486 | MODULE_AUTHOR("Tony Olech <tony.olech@elandigitalsystems.com>"); | |
2487 | MODULE_DESCRIPTION("VUB300 USB to SD/MMC/SDIO adapter driver"); | |
2488 | MODULE_LICENSE("GPL"); |