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path: root/drivers/usb/gadget/storage_common.c
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Diffstat (limited to 'drivers/usb/gadget/storage_common.c')
-rw-r--r--drivers/usb/gadget/storage_common.c165
1 files changed, 5 insertions, 160 deletions
diff --git a/drivers/usb/gadget/storage_common.c b/drivers/usb/gadget/storage_common.c
index 8d9bcd8207c8..0e3ae43454a2 100644
--- a/drivers/usb/gadget/storage_common.c
+++ b/drivers/usb/gadget/storage_common.c
@@ -11,30 +11,10 @@
11 * (at your option) any later version. 11 * (at your option) any later version.
12 */ 12 */
13 13
14
15/* 14/*
16 * This file requires the following identifiers used in USB strings to 15 * This file requires the following identifiers used in USB strings to
17 * be defined (each of type pointer to char): 16 * be defined (each of type pointer to char):
18 * - fsg_string_manufacturer -- name of the manufacturer
19 * - fsg_string_product -- name of the product
20 * - fsg_string_config -- name of the configuration
21 * - fsg_string_interface -- name of the interface 17 * - fsg_string_interface -- name of the interface
22 * The first four are only needed when FSG_DESCRIPTORS_DEVICE_STRINGS
23 * macro is defined prior to including this file.
24 */
25
26/*
27 * When FSG_NO_INTR_EP is defined fsg_fs_intr_in_desc and
28 * fsg_hs_intr_in_desc objects as well as
29 * FSG_FS_FUNCTION_PRE_EP_ENTRIES and FSG_HS_FUNCTION_PRE_EP_ENTRIES
30 * macros are not defined.
31 *
32 * When FSG_NO_DEVICE_STRINGS is defined FSG_STRING_MANUFACTURER,
33 * FSG_STRING_PRODUCT, FSG_STRING_SERIAL and FSG_STRING_CONFIG are not
34 * defined (as well as corresponding entries in string tables are
35 * missing) and FSG_STRING_INTERFACE has value of zero.
36 *
37 * When FSG_NO_OTG is defined fsg_otg_desc won't be defined.
38 */ 18 */
39 19
40/* 20/*
@@ -78,34 +58,6 @@
78#define LWARN(lun, fmt, args...) dev_warn(&(lun)->dev, fmt, ## args) 58#define LWARN(lun, fmt, args...) dev_warn(&(lun)->dev, fmt, ## args)
79#define LINFO(lun, fmt, args...) dev_info(&(lun)->dev, fmt, ## args) 59#define LINFO(lun, fmt, args...) dev_info(&(lun)->dev, fmt, ## args)
80 60
81/*
82 * Keep those macros in sync with those in
83 * include/linux/usb/composite.h or else GCC will complain. If they
84 * are identical (the same names of arguments, white spaces in the
85 * same places) GCC will allow redefinition otherwise (even if some
86 * white space is removed or added) warning will be issued.
87 *
88 * Those macros are needed here because File Storage Gadget does not
89 * include the composite.h header. For composite gadgets those macros
90 * are redundant since composite.h is included any way.
91 *
92 * One could check whether those macros are already defined (which
93 * would indicate composite.h had been included) or not (which would
94 * indicate we were in FSG) but this is not done because a warning is
95 * desired if definitions here differ from the ones in composite.h.
96 *
97 * We want the definitions to match and be the same in File Storage
98 * Gadget as well as Mass Storage Function (and so composite gadgets
99 * using MSF). If someone changes them in composite.h it will produce
100 * a warning in this file when building MSF.
101 */
102#define DBG(d, fmt, args...) dev_dbg(&(d)->gadget->dev , fmt , ## args)
103#define VDBG(d, fmt, args...) dev_vdbg(&(d)->gadget->dev , fmt , ## args)
104#define ERROR(d, fmt, args...) dev_err(&(d)->gadget->dev , fmt , ## args)
105#define WARNING(d, fmt, args...) dev_warn(&(d)->gadget->dev , fmt , ## args)
106#define INFO(d, fmt, args...) dev_info(&(d)->gadget->dev , fmt , ## args)
107
108
109 61
110#ifdef DUMP_MSGS 62#ifdef DUMP_MSGS
111 63
@@ -203,9 +155,12 @@ struct fsg_lun {
203 struct device dev; 155 struct device dev;
204}; 156};
205 157
206#define fsg_lun_is_open(curlun) ((curlun)->filp != NULL) 158static inline bool fsg_lun_is_open(struct fsg_lun *curlun)
159{
160 return curlun->filp != NULL;
161}
207 162
208static struct fsg_lun *fsg_lun_from_dev(struct device *dev) 163static inline struct fsg_lun *fsg_lun_from_dev(struct device *dev)
209{ 164{
210 return container_of(dev, struct fsg_lun, dev); 165 return container_of(dev, struct fsg_lun, dev);
211} 166}
@@ -308,26 +263,10 @@ static inline u32 get_unaligned_be24(u8 *buf)
308 263
309 264
310enum { 265enum {
311#ifndef FSG_NO_DEVICE_STRINGS
312 FSG_STRING_MANUFACTURER = 1,
313 FSG_STRING_PRODUCT,
314 FSG_STRING_SERIAL,
315 FSG_STRING_CONFIG,
316#endif
317 FSG_STRING_INTERFACE 266 FSG_STRING_INTERFACE
318}; 267};
319 268
320 269
321#ifndef FSG_NO_OTG
322static struct usb_otg_descriptor
323fsg_otg_desc = {
324 .bLength = sizeof fsg_otg_desc,
325 .bDescriptorType = USB_DT_OTG,
326
327 .bmAttributes = USB_OTG_SRP,
328};
329#endif
330
331/* There is only one interface. */ 270/* There is only one interface. */
332 271
333static struct usb_interface_descriptor 272static struct usb_interface_descriptor
@@ -367,37 +306,10 @@ fsg_fs_bulk_out_desc = {
367 /* wMaxPacketSize set by autoconfiguration */ 306 /* wMaxPacketSize set by autoconfiguration */
368}; 307};
369 308
370#ifndef FSG_NO_INTR_EP
371
372static struct usb_endpoint_descriptor
373fsg_fs_intr_in_desc = {
374 .bLength = USB_DT_ENDPOINT_SIZE,
375 .bDescriptorType = USB_DT_ENDPOINT,
376
377 .bEndpointAddress = USB_DIR_IN,
378 .bmAttributes = USB_ENDPOINT_XFER_INT,
379 .wMaxPacketSize = cpu_to_le16(2),
380 .bInterval = 32, /* frames -> 32 ms */
381};
382
383#ifndef FSG_NO_OTG
384# define FSG_FS_FUNCTION_PRE_EP_ENTRIES 2
385#else
386# define FSG_FS_FUNCTION_PRE_EP_ENTRIES 1
387#endif
388
389#endif
390
391static struct usb_descriptor_header *fsg_fs_function[] = { 309static struct usb_descriptor_header *fsg_fs_function[] = {
392#ifndef FSG_NO_OTG
393 (struct usb_descriptor_header *) &fsg_otg_desc,
394#endif
395 (struct usb_descriptor_header *) &fsg_intf_desc, 310 (struct usb_descriptor_header *) &fsg_intf_desc,
396 (struct usb_descriptor_header *) &fsg_fs_bulk_in_desc, 311 (struct usb_descriptor_header *) &fsg_fs_bulk_in_desc,
397 (struct usb_descriptor_header *) &fsg_fs_bulk_out_desc, 312 (struct usb_descriptor_header *) &fsg_fs_bulk_out_desc,
398#ifndef FSG_NO_INTR_EP
399 (struct usb_descriptor_header *) &fsg_fs_intr_in_desc,
400#endif
401 NULL, 313 NULL,
402}; 314};
403 315
@@ -431,37 +343,11 @@ fsg_hs_bulk_out_desc = {
431 .bInterval = 1, /* NAK every 1 uframe */ 343 .bInterval = 1, /* NAK every 1 uframe */
432}; 344};
433 345
434#ifndef FSG_NO_INTR_EP
435
436static struct usb_endpoint_descriptor
437fsg_hs_intr_in_desc = {
438 .bLength = USB_DT_ENDPOINT_SIZE,
439 .bDescriptorType = USB_DT_ENDPOINT,
440
441 /* bEndpointAddress copied from fs_intr_in_desc during fsg_bind() */
442 .bmAttributes = USB_ENDPOINT_XFER_INT,
443 .wMaxPacketSize = cpu_to_le16(2),
444 .bInterval = 9, /* 2**(9-1) = 256 uframes -> 32 ms */
445};
446
447#ifndef FSG_NO_OTG
448# define FSG_HS_FUNCTION_PRE_EP_ENTRIES 2
449#else
450# define FSG_HS_FUNCTION_PRE_EP_ENTRIES 1
451#endif
452
453#endif
454 346
455static struct usb_descriptor_header *fsg_hs_function[] = { 347static struct usb_descriptor_header *fsg_hs_function[] = {
456#ifndef FSG_NO_OTG
457 (struct usb_descriptor_header *) &fsg_otg_desc,
458#endif
459 (struct usb_descriptor_header *) &fsg_intf_desc, 348 (struct usb_descriptor_header *) &fsg_intf_desc,
460 (struct usb_descriptor_header *) &fsg_hs_bulk_in_desc, 349 (struct usb_descriptor_header *) &fsg_hs_bulk_in_desc,
461 (struct usb_descriptor_header *) &fsg_hs_bulk_out_desc, 350 (struct usb_descriptor_header *) &fsg_hs_bulk_out_desc,
462#ifndef FSG_NO_INTR_EP
463 (struct usb_descriptor_header *) &fsg_hs_intr_in_desc,
464#endif
465 NULL, 351 NULL,
466}; 352};
467 353
@@ -499,34 +385,6 @@ static struct usb_ss_ep_comp_descriptor fsg_ss_bulk_out_comp_desc = {
499 /*.bMaxBurst = DYNAMIC, */ 385 /*.bMaxBurst = DYNAMIC, */
500}; 386};
501 387
502#ifndef FSG_NO_INTR_EP
503
504static struct usb_endpoint_descriptor
505fsg_ss_intr_in_desc = {
506 .bLength = USB_DT_ENDPOINT_SIZE,
507 .bDescriptorType = USB_DT_ENDPOINT,
508
509 /* bEndpointAddress copied from fs_intr_in_desc during fsg_bind() */
510 .bmAttributes = USB_ENDPOINT_XFER_INT,
511 .wMaxPacketSize = cpu_to_le16(2),
512 .bInterval = 9, /* 2**(9-1) = 256 uframes -> 32 ms */
513};
514
515static struct usb_ss_ep_comp_descriptor fsg_ss_intr_in_comp_desc = {
516 .bLength = sizeof(fsg_ss_bulk_in_comp_desc),
517 .bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
518
519 .wBytesPerInterval = cpu_to_le16(2),
520};
521
522#ifndef FSG_NO_OTG
523# define FSG_SS_FUNCTION_PRE_EP_ENTRIES 2
524#else
525# define FSG_SS_FUNCTION_PRE_EP_ENTRIES 1
526#endif
527
528#endif
529
530static __maybe_unused struct usb_ext_cap_descriptor fsg_ext_cap_desc = { 388static __maybe_unused struct usb_ext_cap_descriptor fsg_ext_cap_desc = {
531 .bLength = USB_DT_USB_EXT_CAP_SIZE, 389 .bLength = USB_DT_USB_EXT_CAP_SIZE,
532 .bDescriptorType = USB_DT_DEVICE_CAPABILITY, 390 .bDescriptorType = USB_DT_DEVICE_CAPABILITY,
@@ -563,18 +421,11 @@ static __maybe_unused struct usb_bos_descriptor fsg_bos_desc = {
563}; 421};
564 422
565static struct usb_descriptor_header *fsg_ss_function[] = { 423static struct usb_descriptor_header *fsg_ss_function[] = {
566#ifndef FSG_NO_OTG
567 (struct usb_descriptor_header *) &fsg_otg_desc,
568#endif
569 (struct usb_descriptor_header *) &fsg_intf_desc, 424 (struct usb_descriptor_header *) &fsg_intf_desc,
570 (struct usb_descriptor_header *) &fsg_ss_bulk_in_desc, 425 (struct usb_descriptor_header *) &fsg_ss_bulk_in_desc,
571 (struct usb_descriptor_header *) &fsg_ss_bulk_in_comp_desc, 426 (struct usb_descriptor_header *) &fsg_ss_bulk_in_comp_desc,
572 (struct usb_descriptor_header *) &fsg_ss_bulk_out_desc, 427 (struct usb_descriptor_header *) &fsg_ss_bulk_out_desc,
573 (struct usb_descriptor_header *) &fsg_ss_bulk_out_comp_desc, 428 (struct usb_descriptor_header *) &fsg_ss_bulk_out_comp_desc,
574#ifndef FSG_NO_INTR_EP
575 (struct usb_descriptor_header *) &fsg_ss_intr_in_desc,
576 (struct usb_descriptor_header *) &fsg_ss_intr_in_comp_desc,
577#endif
578 NULL, 429 NULL,
579}; 430};
580 431
@@ -594,12 +445,6 @@ fsg_ep_desc(struct usb_gadget *g, struct usb_endpoint_descriptor *fs,
594 445
595/* Static strings, in UTF-8 (for simplicity we use only ASCII characters) */ 446/* Static strings, in UTF-8 (for simplicity we use only ASCII characters) */
596static struct usb_string fsg_strings[] = { 447static struct usb_string fsg_strings[] = {
597#ifndef FSG_NO_DEVICE_STRINGS
598 {FSG_STRING_MANUFACTURER, fsg_string_manufacturer},
599 {FSG_STRING_PRODUCT, fsg_string_product},
600 {FSG_STRING_SERIAL, ""},
601 {FSG_STRING_CONFIG, fsg_string_config},
602#endif
603 {FSG_STRING_INTERFACE, fsg_string_interface}, 448 {FSG_STRING_INTERFACE, fsg_string_interface},
604 {} 449 {}
605}; 450};