diff options
Diffstat (limited to 'drivers/usb/gadget')
27 files changed, 553 insertions, 190 deletions
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig index 3c3f31ceece7..8ad203296079 100644 --- a/drivers/usb/gadget/Kconfig +++ b/drivers/usb/gadget/Kconfig @@ -209,25 +209,6 @@ config USB_F_PRINTER config USB_F_TCM tristate -choice - tristate "USB Gadget Drivers" - default USB_ETH - help - A Linux "Gadget Driver" talks to the USB Peripheral Controller - driver through the abstract "gadget" API. Some other operating - systems call these "client" drivers, of which "class drivers" - are a subset (implementing a USB device class specification). - A gadget driver implements one or more USB functions using - the peripheral hardware. - - Gadget drivers are hardware-neutral, or "platform independent", - except that they sometimes must understand quirks or limitations - of the particular controllers they work with. For example, when - a controller doesn't support alternate configurations or provide - enough of the right types of endpoints, the gadget driver might - not be able work with that controller, or might need to implement - a less common variant of a device class protocol. - # this first set of drivers all depend on bulk-capable hardware. config USB_CONFIGFS @@ -439,6 +420,7 @@ config USB_CONFIGFS_F_HID config USB_CONFIGFS_F_UVC bool "USB Webcam function" depends on USB_CONFIGFS + depends on VIDEO_V4L2 depends on VIDEO_DEV select VIDEOBUF2_VMALLOC select USB_F_UVC @@ -475,6 +457,25 @@ config USB_CONFIGFS_F_TCM Both protocols can work on USB2.0 and USB3.0. UAS utilizes the USB 3.0 feature called streams support. +choice + tristate "USB Gadget Drivers" + default USB_ETH + help + A Linux "Gadget Driver" talks to the USB Peripheral Controller + driver through the abstract "gadget" API. Some other operating + systems call these "client" drivers, of which "class drivers" + are a subset (implementing a USB device class specification). + A gadget driver implements one or more USB functions using + the peripheral hardware. + + Gadget drivers are hardware-neutral, or "platform independent", + except that they sometimes must understand quirks or limitations + of the particular controllers they work with. For example, when + a controller doesn't support alternate configurations or provide + enough of the right types of endpoints, the gadget driver might + not be able work with that controller, or might need to implement + a less common variant of a device class protocol. + source "drivers/usb/gadget/legacy/Kconfig" endchoice diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 5ebe6af7976e..32176f779861 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -1893,17 +1893,21 @@ unknown: /* functions always handle their interfaces and endpoints... * punt other recipients (other, WUSB, ...) to the current * configuration code. - * - * REVISIT it could make sense to let the composite device - * take such requests too, if that's ever needed: to work - * in config 0, etc. */ if (cdev->config) { list_for_each_entry(f, &cdev->config->functions, list) - if (f->req_match && f->req_match(f, ctrl)) + if (f->req_match && + f->req_match(f, ctrl, false)) goto try_fun_setup; - f = NULL; + } else { + struct usb_configuration *c; + list_for_each_entry(c, &cdev->configs, list) + list_for_each_entry(f, &c->functions, list) + if (f->req_match && + f->req_match(f, ctrl, true)) + goto try_fun_setup; } + f = NULL; switch (ctrl->bRequestType & USB_RECIP_MASK) { case USB_RECIP_INTERFACE: diff --git a/drivers/usb/gadget/configfs.c b/drivers/usb/gadget/configfs.c index f9237fe2be05..3984787f8e97 100644 --- a/drivers/usb/gadget/configfs.c +++ b/drivers/usb/gadget/configfs.c @@ -1211,8 +1211,9 @@ static void purge_configs_funcs(struct gadget_info *gi) list_move_tail(&f->list, &cfg->func_list); if (f->unbind) { - dev_err(&gi->cdev.gadget->dev, "unbind function" - " '%s'/%p\n", f->name, f); + dev_dbg(&gi->cdev.gadget->dev, + "unbind function '%s'/%p\n", + f->name, f); f->unbind(c, f); } } diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c index 5c8429f23a89..0aeed85bb5cb 100644 --- a/drivers/usb/gadget/function/f_fs.c +++ b/drivers/usb/gadget/function/f_fs.c @@ -98,6 +98,9 @@ static int ffs_func_set_alt(struct usb_function *, unsigned, unsigned); static void ffs_func_disable(struct usb_function *); static int ffs_func_setup(struct usb_function *, const struct usb_ctrlrequest *); +static bool ffs_func_req_match(struct usb_function *, + const struct usb_ctrlrequest *, + bool config0); static void ffs_func_suspend(struct usb_function *); static void ffs_func_resume(struct usb_function *); @@ -2243,7 +2246,9 @@ static int __ffs_data_got_descs(struct ffs_data *ffs, FUNCTIONFS_HAS_SS_DESC | FUNCTIONFS_HAS_MS_OS_DESC | FUNCTIONFS_VIRTUAL_ADDR | - FUNCTIONFS_EVENTFD)) { + FUNCTIONFS_EVENTFD | + FUNCTIONFS_ALL_CTRL_RECIP | + FUNCTIONFS_CONFIG0_SETUP)) { ret = -ENOSYS; goto error; } @@ -3094,8 +3099,9 @@ static int ffs_func_setup(struct usb_function *f, * handle them. All other either handled by composite or * passed to usb_configuration->setup() (if one is set). No * matter, we will handle requests directed to endpoint here - * as well (as it's straightforward) but what to do with any - * other request? + * as well (as it's straightforward). Other request recipient + * types are only handled when the user flag FUNCTIONFS_ALL_CTRL_RECIP + * is being used. */ if (ffs->state != FFS_ACTIVE) return -ENODEV; @@ -3116,7 +3122,10 @@ static int ffs_func_setup(struct usb_function *f, break; default: - return -EOPNOTSUPP; + if (func->ffs->user_flags & FUNCTIONFS_ALL_CTRL_RECIP) + ret = le16_to_cpu(creq->wIndex); + else + return -EOPNOTSUPP; } spin_lock_irqsave(&ffs->ev.waitq.lock, flags); @@ -3128,6 +3137,28 @@ static int ffs_func_setup(struct usb_function *f, return 0; } +static bool ffs_func_req_match(struct usb_function *f, + const struct usb_ctrlrequest *creq, + bool config0) +{ + struct ffs_function *func = ffs_func_from_usb(f); + + if (config0 && !(func->ffs->user_flags & FUNCTIONFS_CONFIG0_SETUP)) + return false; + + switch (creq->bRequestType & USB_RECIP_MASK) { + case USB_RECIP_INTERFACE: + return ffs_func_revmap_intf(func, + le16_to_cpu(creq->wIndex) >= 0); + case USB_RECIP_ENDPOINT: + return ffs_func_revmap_ep(func, + le16_to_cpu(creq->wIndex) >= 0); + default: + return (bool) (func->ffs->user_flags & + FUNCTIONFS_ALL_CTRL_RECIP); + } +} + static void ffs_func_suspend(struct usb_function *f) { ENTER(); @@ -3378,6 +3409,7 @@ static struct usb_function *ffs_alloc(struct usb_function_instance *fi) func->function.set_alt = ffs_func_set_alt; func->function.disable = ffs_func_disable; func->function.setup = ffs_func_setup; + func->function.req_match = ffs_func_req_match; func->function.suspend = ffs_func_suspend; func->function.resume = ffs_func_resume; func->function.free_func = ffs_free; @@ -3470,6 +3502,11 @@ static void _ffs_free_dev(struct ffs_dev *dev) list_del(&dev->entry); if (dev->name_allocated) kfree(dev->name); + + /* Clear the private_data pointer to stop incorrect dev access */ + if (dev->ffs_data) + dev->ffs_data->private_data = NULL; + kfree(dev); if (list_empty(&ffs_devices)) functionfs_cleanup(); diff --git a/drivers/usb/gadget/function/f_hid.c b/drivers/usb/gadget/function/f_hid.c index 51980c50546d..e2966f87c860 100644 --- a/drivers/usb/gadget/function/f_hid.c +++ b/drivers/usb/gadget/function/f_hid.c @@ -365,7 +365,7 @@ static int f_hidg_open(struct inode *inode, struct file *fd) static inline struct usb_request *hidg_alloc_ep_req(struct usb_ep *ep, unsigned length) { - return alloc_ep_req(ep, length, length); + return alloc_ep_req(ep, length); } static void hidg_set_report_complete(struct usb_ep *ep, struct usb_request *req) @@ -617,14 +617,10 @@ static int hidg_bind(struct usb_configuration *c, struct usb_function *f) /* preallocate request and buffer */ status = -ENOMEM; - hidg->req = usb_ep_alloc_request(hidg->in_ep, GFP_KERNEL); + hidg->req = alloc_ep_req(hidg->in_ep, hidg->report_length); if (!hidg->req) goto fail; - hidg->req->buf = kmalloc(hidg->report_length, GFP_KERNEL); - if (!hidg->req->buf) - goto fail; - /* set descriptor dynamic values */ hidg_interface_desc.bInterfaceSubClass = hidg->bInterfaceSubClass; hidg_interface_desc.bInterfaceProtocol = hidg->bInterfaceProtocol; @@ -677,11 +673,8 @@ fail_free_descs: usb_free_all_descriptors(f); fail: ERROR(f->config->cdev, "hidg_bind FAILED\n"); - if (hidg->req != NULL) { - kfree(hidg->req->buf); - if (hidg->in_ep != NULL) - usb_ep_free_request(hidg->in_ep, hidg->req); - } + if (hidg->req != NULL) + free_ep_req(hidg->in_ep, hidg->req); return status; } @@ -809,11 +802,21 @@ end: CONFIGFS_ATTR(f_hid_opts_, report_desc); +static ssize_t f_hid_opts_dev_show(struct config_item *item, char *page) +{ + struct f_hid_opts *opts = to_f_hid_opts(item); + + return sprintf(page, "%d:%d\n", major, opts->minor); +} + +CONFIGFS_ATTR_RO(f_hid_opts_, dev); + static struct configfs_attribute *hid_attrs[] = { &f_hid_opts_attr_subclass, &f_hid_opts_attr_protocol, &f_hid_opts_attr_report_length, &f_hid_opts_attr_report_desc, + &f_hid_opts_attr_dev, NULL, }; @@ -910,8 +913,7 @@ static void hidg_unbind(struct usb_configuration *c, struct usb_function *f) /* disable/free request and end point */ usb_ep_disable(hidg->in_ep); - kfree(hidg->req->buf); - usb_ep_free_request(hidg->in_ep, hidg->req); + free_ep_req(hidg->in_ep, hidg->req); usb_free_all_descriptors(f); } diff --git a/drivers/usb/gadget/function/f_loopback.c b/drivers/usb/gadget/function/f_loopback.c index 3a9f8f9c77bd..e70093835e14 100644 --- a/drivers/usb/gadget/function/f_loopback.c +++ b/drivers/usb/gadget/function/f_loopback.c @@ -308,9 +308,7 @@ static void disable_loopback(struct f_loopback *loop) static inline struct usb_request *lb_alloc_ep_req(struct usb_ep *ep, int len) { - struct f_loopback *loop = ep->driver_data; - - return alloc_ep_req(ep, len, loop->buflen); + return alloc_ep_req(ep, len); } static int alloc_requests(struct usb_composite_dev *cdev, @@ -333,7 +331,7 @@ static int alloc_requests(struct usb_composite_dev *cdev, if (!in_req) goto fail; - out_req = lb_alloc_ep_req(loop->out_ep, 0); + out_req = lb_alloc_ep_req(loop->out_ep, loop->buflen); if (!out_req) goto fail_in; @@ -593,13 +591,9 @@ DECLARE_USB_FUNCTION(Loopback, loopback_alloc_instance, loopback_alloc); int __init lb_modinit(void) { - int ret; - - ret = usb_function_register(&Loopbackusb_func); - if (ret) - return ret; - return ret; + return usb_function_register(&Loopbackusb_func); } + void __exit lb_modexit(void) { usb_function_unregister(&Loopbackusb_func); diff --git a/drivers/usb/gadget/function/f_mass_storage.c b/drivers/usb/gadget/function/f_mass_storage.c index 2505117e88e8..8f3659b65f53 100644 --- a/drivers/usb/gadget/function/f_mass_storage.c +++ b/drivers/usb/gadget/function/f_mass_storage.c @@ -311,11 +311,7 @@ struct fsg_common { /* Gadget's private data. */ void *private_data; - /* - * Vendor (8 chars), product (16 chars), release (4 - * hexadecimal digits) and NUL byte - */ - char inquiry_string[8 + 16 + 4 + 1]; + char inquiry_string[INQUIRY_STRING_LEN]; struct kref ref; }; @@ -1107,7 +1103,12 @@ static int do_inquiry(struct fsg_common *common, struct fsg_buffhd *bh) buf[5] = 0; /* No special options */ buf[6] = 0; buf[7] = 0; - memcpy(buf + 8, common->inquiry_string, sizeof common->inquiry_string); + if (curlun->inquiry_string[0]) + memcpy(buf + 8, curlun->inquiry_string, + sizeof(curlun->inquiry_string)); + else + memcpy(buf + 8, common->inquiry_string, + sizeof(common->inquiry_string)); return 36; } @@ -3209,12 +3210,27 @@ static ssize_t fsg_lun_opts_nofua_store(struct config_item *item, CONFIGFS_ATTR(fsg_lun_opts_, nofua); +static ssize_t fsg_lun_opts_inquiry_string_show(struct config_item *item, + char *page) +{ + return fsg_show_inquiry_string(to_fsg_lun_opts(item)->lun, page); +} + +static ssize_t fsg_lun_opts_inquiry_string_store(struct config_item *item, + const char *page, size_t len) +{ + return fsg_store_inquiry_string(to_fsg_lun_opts(item)->lun, page, len); +} + +CONFIGFS_ATTR(fsg_lun_opts_, inquiry_string); + static struct configfs_attribute *fsg_lun_attrs[] = { &fsg_lun_opts_attr_file, &fsg_lun_opts_attr_ro, &fsg_lun_opts_attr_removable, &fsg_lun_opts_attr_cdrom, &fsg_lun_opts_attr_nofua, + &fsg_lun_opts_attr_inquiry_string, NULL, }; diff --git a/drivers/usb/gadget/function/f_mass_storage.h b/drivers/usb/gadget/function/f_mass_storage.h index b6a9918eaefb..d3902313b8ac 100644 --- a/drivers/usb/gadget/function/f_mass_storage.h +++ b/drivers/usb/gadget/function/f_mass_storage.h @@ -100,6 +100,7 @@ struct fsg_lun_config { char removable; char cdrom; char nofua; + char inquiry_string[INQUIRY_STRING_LEN]; }; struct fsg_config { diff --git a/drivers/usb/gadget/function/f_midi.c b/drivers/usb/gadget/function/f_midi.c index 58fc199a18ec..a5719f271bf0 100644 --- a/drivers/usb/gadget/function/f_midi.c +++ b/drivers/usb/gadget/function/f_midi.c @@ -51,6 +51,19 @@ static const char f_midi_longname[] = "MIDI Gadget"; */ #define MAX_PORTS 16 +/* MIDI message states */ +enum { + STATE_INITIAL = 0, /* pseudo state */ + STATE_1PARAM, + STATE_2PARAM_1, + STATE_2PARAM_2, + STATE_SYSEX_0, + STATE_SYSEX_1, + STATE_SYSEX_2, + STATE_REAL_TIME, + STATE_FINISHED, /* pseudo state */ +}; + /* * This is a gadget, and the IN/OUT naming is from the host's perspective. * USB -> OUT endpoint -> rawmidi @@ -61,13 +74,6 @@ struct gmidi_in_port { int active; uint8_t cable; uint8_t state; -#define STATE_UNKNOWN 0 -#define STATE_1PARAM 1 -#define STATE_2PARAM_1 2 -#define STATE_2PARAM_2 3 -#define STATE_SYSEX_0 4 -#define STATE_SYSEX_1 5 -#define STATE_SYSEX_2 6 uint8_t data[2]; }; @@ -205,7 +211,7 @@ static struct usb_gadget_strings *midi_strings[] = { static inline struct usb_request *midi_alloc_ep_req(struct usb_ep *ep, unsigned length) { - return alloc_ep_req(ep, length, length); + return alloc_ep_req(ep, length); } static const uint8_t f_midi_cin_length[] = { @@ -299,6 +305,19 @@ f_midi_complete(struct usb_ep *ep, struct usb_request *req) } } +static void f_midi_drop_out_substreams(struct f_midi *midi) +{ + unsigned int i; + + for (i = 0; i < midi->in_ports; i++) { + struct gmidi_in_port *port = midi->in_ports_array + i; + struct snd_rawmidi_substream *substream = port->substream; + + if (port->active && substream) + snd_rawmidi_drop_output(substream); + } +} + static int f_midi_start_ep(struct f_midi *midi, struct usb_function *f, struct usb_ep *ep) @@ -360,9 +379,8 @@ static int f_midi_set_alt(struct usb_function *f, unsigned intf, unsigned alt) /* allocate a bunch of read buffers and queue them all at once. */ for (i = 0; i < midi->qlen && err == 0; i++) { struct usb_request *req = - midi_alloc_ep_req(midi->out_ep, - max_t(unsigned, midi->buflen, - bulk_out_desc.wMaxPacketSize)); + midi_alloc_ep_req(midi->out_ep, midi->buflen); + if (req == NULL) return -ENOMEM; @@ -397,6 +415,8 @@ static void f_midi_disable(struct usb_function *f) /* release IN requests */ while (kfifo_get(&midi->in_req_fifo, &req)) free_ep_req(midi->in_ep, req); + + f_midi_drop_out_substreams(midi); } static int f_midi_snd_free(struct snd_device *device) @@ -404,130 +424,166 @@ static int f_midi_snd_free(struct snd_device *device) return 0; } -static void f_midi_transmit_packet(struct usb_request *req, uint8_t p0, - uint8_t p1, uint8_t p2, uint8_t p3) -{ - unsigned length = req->length; - u8 *buf = (u8 *)req->buf + length; - - buf[0] = p0; - buf[1] = p1; - buf[2] = p2; - buf[3] = p3; - req->length = length + 4; -} - /* * Converts MIDI commands to USB MIDI packets. */ static void f_midi_transmit_byte(struct usb_request *req, struct gmidi_in_port *port, uint8_t b) { - uint8_t p0 = port->cable << 4; + uint8_t p[4] = { port->cable << 4, 0, 0, 0 }; + uint8_t next_state = STATE_INITIAL; + + switch (b) { + case 0xf8 ... 0xff: + /* System Real-Time Messages */ + p[0] |= 0x0f; + p[1] = b; + next_state = port->state; + port->state = STATE_REAL_TIME; + break; - if (b >= 0xf8) { - f_midi_transmit_packet(req, p0 | 0x0f, b, 0, 0); - } else if (b >= 0xf0) { + case 0xf7: + /* End of SysEx */ + switch (port->state) { + case STATE_SYSEX_0: + p[0] |= 0x05; + p[1] = 0xf7; + next_state = STATE_FINISHED; + break; + case STATE_SYSEX_1: + p[0] |= 0x06; + p[1] = port->data[0]; + p[2] = 0xf7; + next_state = STATE_FINISHED; + break; + case STATE_SYSEX_2: + p[0] |= 0x07; + p[1] = port->data[0]; + p[2] = port->data[1]; + p[3] = 0xf7; + next_state = STATE_FINISHED; + break; + default: + /* Ignore byte */ + next_state = port->state; + port->state = STATE_INITIAL; + } + break; + + case 0xf0 ... 0xf6: + /* System Common Messages */ + port->data[0] = port->data[1] = 0; + port->state = STATE_INITIAL; switch (b) { case 0xf0: port->data[0] = b; - port->state = STATE_SYSEX_1; + port->data[1] = 0; + next_state = STATE_SYSEX_1; break; case 0xf1: case 0xf3: port->data[0] = b; - port->state = STATE_1PARAM; + next_state = STATE_1PARAM; break; case 0xf2: port->data[0] = b; - port->state = STATE_2PARAM_1; + next_state = STATE_2PARAM_1; break; case 0xf4: case 0xf5: - port->state = STATE_UNKNOWN; + next_state = STATE_INITIAL; break; case 0xf6: - f_midi_transmit_packet(req, p0 | 0x05, 0xf6, 0, 0); - port->state = STATE_UNKNOWN; - break; - case 0xf7: - switch (port->state) { - case STATE_SYSEX_0: - f_midi_transmit_packet(req, - p0 | 0x05, 0xf7, 0, 0); - break; - case STATE_SYSEX_1: - f_midi_transmit_packet(req, - p0 | 0x06, port->data[0], 0xf7, 0); - break; - case STATE_SYSEX_2: - f_midi_transmit_packet(req, - p0 | 0x07, port->data[0], - port->data[1], 0xf7); - break; - } - port->state = STATE_UNKNOWN; + p[0] |= 0x05; + p[1] = 0xf6; + next_state = STATE_FINISHED; break; } - } else if (b >= 0x80) { + break; + + case 0x80 ... 0xef: + /* + * Channel Voice Messages, Channel Mode Messages + * and Control Change Messages. + */ port->data[0] = b; + port->data[1] = 0; + port->state = STATE_INITIAL; if (b >= 0xc0 && b <= 0xdf) - port->state = STATE_1PARAM; + next_state = STATE_1PARAM; else - port->state = STATE_2PARAM_1; - } else { /* b < 0x80 */ + next_state = STATE_2PARAM_1; + break; + + case 0x00 ... 0x7f: + /* Message parameters */ switch (port->state) { case STATE_1PARAM: - if (port->data[0] < 0xf0) { - p0 |= port->data[0] >> 4; - } else { - p0 |= 0x02; - port->state = STATE_UNKNOWN; - } - f_midi_transmit_packet(req, p0, port->data[0], b, 0); + if (port->data[0] < 0xf0) + p[0] |= port->data[0] >> 4; + else + p[0] |= 0x02; + + p[1] = port->data[0]; + p[2] = b; + /* This is to allow Running State Messages */ + next_state = STATE_1PARAM; break; case STATE_2PARAM_1: port->data[1] = b; - port->state = STATE_2PARAM_2; + next_state = STATE_2PARAM_2; break; case STATE_2PARAM_2: - if (port->data[0] < 0xf0) { - p0 |= port->data[0] >> 4; - port->state = STATE_2PARAM_1; - } else { - p0 |= 0x03; - port->state = STATE_UNKNOWN; - } - f_midi_transmit_packet(req, - p0, port->data[0], port->data[1], b); + if (port->data[0] < 0xf0) + p[0] |= port->data[0] >> 4; + else + p[0] |= 0x03; + + p[1] = port->data[0]; + p[2] = port->data[1]; + p[3] = b; + /* This is to allow Running State Messages */ + next_state = STATE_2PARAM_1; break; case STATE_SYSEX_0: port->data[0] = b; - port->state = STATE_SYSEX_1; + next_state = STATE_SYSEX_1; break; case STATE_SYSEX_1: port->data[1] = b; - port->state = STATE_SYSEX_2; + next_state = STATE_SYSEX_2; break; case STATE_SYSEX_2: - f_midi_transmit_packet(req, - p0 | 0x04, port->data[0], port->data[1], b); - port->state = STATE_SYSEX_0; + p[0] |= 0x04; + p[1] = port->data[0]; + p[2] = port->data[1]; + p[3] = b; + next_state = STATE_SYSEX_0; break; } + break; } -} -static void f_midi_drop_out_substreams(struct f_midi *midi) -{ - unsigned int i; + /* States where we have to write into the USB request */ + if (next_state == STATE_FINISHED || + port->state == STATE_SYSEX_2 || + port->state == STATE_1PARAM || + port->state == STATE_2PARAM_2 || + port->state == STATE_REAL_TIME) { - for (i = 0; i < midi->in_ports; i++) { - struct gmidi_in_port *port = midi->in_ports_array + i; - struct snd_rawmidi_substream *substream = port->substream; - if (port->active && substream) - snd_rawmidi_drop_output(substream); + unsigned int length = req->length; + u8 *buf = (u8 *)req->buf + length; + + memcpy(buf, p, sizeof(p)); + req->length = length + sizeof(p); + + if (next_state == STATE_FINISHED) { + next_state = STATE_INITIAL; + port->data[0] = port->data[1] = 0; + } } + + port->state = next_state; } static int f_midi_do_transmit(struct f_midi *midi, struct usb_ep *ep) @@ -642,7 +698,7 @@ static int f_midi_in_open(struct snd_rawmidi_substream *substream) VDBG(midi, "%s()\n", __func__); port = midi->in_ports_array + substream->number; port->substream = substream; - port->state = STATE_UNKNOWN; + port->state = STATE_INITIAL; return 0; } @@ -1123,7 +1179,7 @@ static struct usb_function_instance *f_midi_alloc_inst(void) opts->func_inst.free_func_inst = f_midi_free_inst; opts->index = SNDRV_DEFAULT_IDX1; opts->id = SNDRV_DEFAULT_STR1; - opts->buflen = 256; + opts->buflen = 512; opts->qlen = 32; opts->in_ports = 1; opts->out_ports = 1; diff --git a/drivers/usb/gadget/function/f_ncm.c b/drivers/usb/gadget/function/f_ncm.c index 97f0a9bc84df..639603722709 100644 --- a/drivers/usb/gadget/function/f_ncm.c +++ b/drivers/usb/gadget/function/f_ncm.c @@ -90,7 +90,9 @@ static inline struct f_ncm *func_to_ncm(struct usb_function *f) /* peak (theoretical) bulk transfer rate in bits-per-second */ static inline unsigned ncm_bitrate(struct usb_gadget *g) { - if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH) + if (gadget_is_superspeed(g) && g->speed == USB_SPEED_SUPER) + return 13 * 1024 * 8 * 1000 * 8; + else if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH) return 13 * 512 * 8 * 1000 * 8; else return 19 * 64 * 1 * 1000 * 8; @@ -333,6 +335,76 @@ static struct usb_descriptor_header *ncm_hs_function[] = { NULL, }; + +/* super speed support: */ + +static struct usb_endpoint_descriptor ss_ncm_notify_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_INT, + .wMaxPacketSize = cpu_to_le16(NCM_STATUS_BYTECOUNT), + .bInterval = USB_MS_TO_HS_INTERVAL(NCM_STATUS_INTERVAL_MS) +}; + +static struct usb_ss_ep_comp_descriptor ss_ncm_notify_comp_desc = { + .bLength = sizeof(ss_ncm_notify_comp_desc), + .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, + + /* the following 3 values can be tweaked if necessary */ + /* .bMaxBurst = 0, */ + /* .bmAttributes = 0, */ + .wBytesPerInterval = cpu_to_le16(NCM_STATUS_BYTECOUNT), +}; + +static struct usb_endpoint_descriptor ss_ncm_in_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = cpu_to_le16(1024), +}; + +static struct usb_endpoint_descriptor ss_ncm_out_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_OUT, + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = cpu_to_le16(1024), +}; + +static struct usb_ss_ep_comp_descriptor ss_ncm_bulk_comp_desc = { + .bLength = sizeof(ss_ncm_bulk_comp_desc), + .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, + + /* the following 2 values can be tweaked if necessary */ + /* .bMaxBurst = 0, */ + /* .bmAttributes = 0, */ +}; + +static struct usb_descriptor_header *ncm_ss_function[] = { + (struct usb_descriptor_header *) &ncm_iad_desc, + /* CDC NCM control descriptors */ + (struct usb_descriptor_header *) &ncm_control_intf, + (struct usb_descriptor_header *) &ncm_header_desc, + (struct usb_descriptor_header *) &ncm_union_desc, + (struct usb_descriptor_header *) &ecm_desc, + (struct usb_descriptor_header *) &ncm_desc, + (struct usb_descriptor_header *) &ss_ncm_notify_desc, + (struct usb_descriptor_header *) &ss_ncm_notify_comp_desc, + /* data interface, altsettings 0 and 1 */ + (struct usb_descriptor_header *) &ncm_data_nop_intf, + (struct usb_descriptor_header *) &ncm_data_intf, + (struct usb_descriptor_header *) &ss_ncm_in_desc, + (struct usb_descriptor_header *) &ss_ncm_bulk_comp_desc, + (struct usb_descriptor_header *) &ss_ncm_out_desc, + (struct usb_descriptor_header *) &ss_ncm_bulk_comp_desc, + NULL, +}; + /* string descriptors: */ #define STRING_CTRL_IDX 0 @@ -852,6 +924,8 @@ static int ncm_set_alt(struct usb_function *f, unsigned intf, unsigned alt) */ ncm->port.is_zlp_ok = gadget_is_zlp_supported(cdev->gadget); + ncm->port.no_skb_reserve = + gadget_avoids_skb_reserve(cdev->gadget); ncm->port.cdc_filter = DEFAULT_FILTER; DBG(cdev, "activate ncm\n"); net = gether_connect(&ncm->port); @@ -1431,8 +1505,13 @@ static int ncm_bind(struct usb_configuration *c, struct usb_function *f) hs_ncm_notify_desc.bEndpointAddress = fs_ncm_notify_desc.bEndpointAddress; + ss_ncm_in_desc.bEndpointAddress = fs_ncm_in_desc.bEndpointAddress; + ss_ncm_out_desc.bEndpointAddress = fs_ncm_out_desc.bEndpointAddress; + ss_ncm_notify_desc.bEndpointAddress = + fs_ncm_notify_desc.bEndpointAddress; + status = usb_assign_descriptors(f, ncm_fs_function, ncm_hs_function, - NULL, NULL); + ncm_ss_function, NULL); if (status) goto fail; @@ -1450,6 +1529,7 @@ static int ncm_bind(struct usb_configuration *c, struct usb_function *f) ncm->task_timer.function = ncm_tx_timeout; DBG(cdev, "CDC Network: %s speed IN/%s OUT/%s NOTIFY/%s\n", + gadget_is_superspeed(c->cdev->gadget) ? "super" : gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full", ncm->port.in_ep->name, ncm->port.out_ep->name, ncm->notify->name); diff --git a/drivers/usb/gadget/function/f_printer.c b/drivers/usb/gadget/function/f_printer.c index 64706a789580..0de36cda6e41 100644 --- a/drivers/usb/gadget/function/f_printer.c +++ b/drivers/usb/gadget/function/f_printer.c @@ -889,13 +889,17 @@ static void printer_soft_reset(struct printer_dev *dev) /*-------------------------------------------------------------------------*/ static bool gprinter_req_match(struct usb_function *f, - const struct usb_ctrlrequest *ctrl) + const struct usb_ctrlrequest *ctrl, + bool config0) { struct printer_dev *dev = func_to_printer(f); u16 w_index = le16_to_cpu(ctrl->wIndex); u16 w_value = le16_to_cpu(ctrl->wValue); u16 w_length = le16_to_cpu(ctrl->wLength); + if (config0) + return false; + if ((ctrl->bRequestType & USB_RECIP_MASK) != USB_RECIP_INTERFACE || (ctrl->bRequestType & USB_TYPE_MASK) != USB_TYPE_CLASS) return false; diff --git a/drivers/usb/gadget/function/f_sourcesink.c b/drivers/usb/gadget/function/f_sourcesink.c index df0189ddfdd5..8784fa12ea2c 100644 --- a/drivers/usb/gadget/function/f_sourcesink.c +++ b/drivers/usb/gadget/function/f_sourcesink.c @@ -293,9 +293,7 @@ static struct usb_gadget_strings *sourcesink_strings[] = { static inline struct usb_request *ss_alloc_ep_req(struct usb_ep *ep, int len) { - struct f_sourcesink *ss = ep->driver_data; - - return alloc_ep_req(ep, len, ss->buflen); + return alloc_ep_req(ep, len); } static void disable_ep(struct usb_composite_dev *cdev, struct usb_ep *ep) @@ -606,7 +604,7 @@ static int source_sink_start_ep(struct f_sourcesink *ss, bool is_in, } else { ep = is_in ? ss->in_ep : ss->out_ep; qlen = ss->bulk_qlen; - size = 0; + size = ss->buflen; } for (i = 0; i < qlen; i++) { diff --git a/drivers/usb/gadget/function/f_uvc.c b/drivers/usb/gadget/function/f_uvc.c index 29b41b5dee04..27ed51b5082f 100644 --- a/drivers/usb/gadget/function/f_uvc.c +++ b/drivers/usb/gadget/function/f_uvc.c @@ -258,6 +258,13 @@ uvc_function_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl) memcpy(&uvc_event->req, ctrl, sizeof(uvc_event->req)); v4l2_event_queue(&uvc->vdev, &v4l2_event); + /* Pass additional setup data to userspace */ + if (uvc->event_setup_out && uvc->event_length) { + uvc->control_req->length = uvc->event_length; + return usb_ep_queue(uvc->func.config->cdev->gadget->ep0, + uvc->control_req, GFP_ATOMIC); + } + return 0; } diff --git a/drivers/usb/gadget/function/storage_common.c b/drivers/usb/gadget/function/storage_common.c index 990df221c629..8fbf6861690d 100644 --- a/drivers/usb/gadget/function/storage_common.c +++ b/drivers/usb/gadget/function/storage_common.c @@ -369,6 +369,12 @@ ssize_t fsg_show_removable(struct fsg_lun *curlun, char *buf) } EXPORT_SYMBOL_GPL(fsg_show_removable); +ssize_t fsg_show_inquiry_string(struct fsg_lun *curlun, char *buf) +{ + return sprintf(buf, "%s\n", curlun->inquiry_string); +} +EXPORT_SYMBOL_GPL(fsg_show_inquiry_string); + /* * The caller must hold fsg->filesem for reading when calling this function. */ @@ -499,4 +505,22 @@ ssize_t fsg_store_removable(struct fsg_lun *curlun, const char *buf, } EXPORT_SYMBOL_GPL(fsg_store_removable); +ssize_t fsg_store_inquiry_string(struct fsg_lun *curlun, const char *buf, + size_t count) +{ + const size_t len = min(count, sizeof(curlun->inquiry_string)); + + if (len == 0 || buf[0] == '\n') { + curlun->inquiry_string[0] = 0; + } else { + snprintf(curlun->inquiry_string, + sizeof(curlun->inquiry_string), "%-28s", buf); + if (curlun->inquiry_string[len-1] == '\n') + curlun->inquiry_string[len-1] = ' '; + } + + return count; +} +EXPORT_SYMBOL_GPL(fsg_store_inquiry_string); + MODULE_LICENSE("GPL"); diff --git a/drivers/usb/gadget/function/storage_common.h b/drivers/usb/gadget/function/storage_common.h index c3544e61da66..e69848994cb4 100644 --- a/drivers/usb/gadget/function/storage_common.h +++ b/drivers/usb/gadget/function/storage_common.h @@ -88,6 +88,12 @@ do { \ #define ASC(x) ((u8) ((x) >> 8)) #define ASCQ(x) ((u8) (x)) +/* + * Vendor (8 chars), product (16 chars), release (4 hexadecimal digits) and NUL + * byte + */ +#define INQUIRY_STRING_LEN ((size_t) (8 + 16 + 4 + 1)) + struct fsg_lun { struct file *filp; loff_t file_length; @@ -112,6 +118,7 @@ struct fsg_lun { struct device dev; const char *name; /* "lun.name" */ const char **name_pfx; /* "function.name" */ + char inquiry_string[INQUIRY_STRING_LEN]; }; static inline bool fsg_lun_is_open(struct fsg_lun *curlun) @@ -210,6 +217,7 @@ ssize_t fsg_show_ro(struct fsg_lun *curlun, char *buf); ssize_t fsg_show_nofua(struct fsg_lun *curlun, char *buf); ssize_t fsg_show_file(struct fsg_lun *curlun, struct rw_semaphore *filesem, char *buf); +ssize_t fsg_show_inquiry_string(struct fsg_lun *curlun, char *buf); ssize_t fsg_show_cdrom(struct fsg_lun *curlun, char *buf); ssize_t fsg_show_removable(struct fsg_lun *curlun, char *buf); ssize_t fsg_store_ro(struct fsg_lun *curlun, struct rw_semaphore *filesem, @@ -221,5 +229,7 @@ ssize_t fsg_store_cdrom(struct fsg_lun *curlun, struct rw_semaphore *filesem, const char *buf, size_t count); ssize_t fsg_store_removable(struct fsg_lun *curlun, const char *buf, size_t count); +ssize_t fsg_store_inquiry_string(struct fsg_lun *curlun, const char *buf, + size_t count); #endif /* USB_STORAGE_COMMON_H */ diff --git a/drivers/usb/gadget/function/u_ether.c b/drivers/usb/gadget/function/u_ether.c index 5f562c1ec795..9c8c9ed1dc9e 100644 --- a/drivers/usb/gadget/function/u_ether.c +++ b/drivers/usb/gadget/function/u_ether.c @@ -82,6 +82,7 @@ struct eth_dev { #define WORK_RX_MEMORY 0 bool zlp; + bool no_skb_reserve; u8 host_mac[ETH_ALEN]; u8 dev_mac[ETH_ALEN]; }; @@ -233,7 +234,8 @@ rx_submit(struct eth_dev *dev, struct usb_request *req, gfp_t gfp_flags) * but on at least one, checksumming fails otherwise. Note: * RNDIS headers involve variable numbers of LE32 values. */ - skb_reserve(skb, NET_IP_ALIGN); + if (likely(!dev->no_skb_reserve)) + skb_reserve(skb, NET_IP_ALIGN); req->buf = skb->data; req->length = size; @@ -569,7 +571,8 @@ static netdev_tx_t eth_start_xmit(struct sk_buff *skb, req->complete = tx_complete; /* NCM requires no zlp if transfer is dwNtbInMaxSize */ - if (dev->port_usb->is_fixed && + if (dev->port_usb && + dev->port_usb->is_fixed && length == dev->port_usb->fixed_in_len && (length % in->maxpacket) == 0) req->zero = 0; @@ -1063,6 +1066,7 @@ struct net_device *gether_connect(struct gether *link) if (result == 0) { dev->zlp = link->is_zlp_ok; + dev->no_skb_reserve = link->no_skb_reserve; DBG(dev, "qlen %d\n", qlen(dev->gadget, dev->qmult)); dev->header_len = link->header_len; diff --git a/drivers/usb/gadget/function/u_ether.h b/drivers/usb/gadget/function/u_ether.h index c77145bd6b5b..81d94a7ae4b4 100644 --- a/drivers/usb/gadget/function/u_ether.h +++ b/drivers/usb/gadget/function/u_ether.h @@ -64,6 +64,7 @@ struct gether { struct usb_ep *out_ep; bool is_zlp_ok; + bool no_skb_reserve; u16 cdc_filter; diff --git a/drivers/usb/gadget/legacy/gmidi.c b/drivers/usb/gadget/legacy/gmidi.c index fc2ac150f5ff..0bf39c3ccdb1 100644 --- a/drivers/usb/gadget/legacy/gmidi.c +++ b/drivers/usb/gadget/legacy/gmidi.c @@ -47,7 +47,7 @@ static char *id = SNDRV_DEFAULT_STR1; module_param(id, charp, S_IRUGO); MODULE_PARM_DESC(id, "ID string for the USB MIDI Gadget adapter."); -static unsigned int buflen = 256; +static unsigned int buflen = 512; module_param(buflen, uint, S_IRUGO); MODULE_PARM_DESC(buflen, "MIDI buffer length"); diff --git a/drivers/usb/gadget/u_f.c b/drivers/usb/gadget/u_f.c index 4bc7eea8bfc8..18839732c840 100644 --- a/drivers/usb/gadget/u_f.c +++ b/drivers/usb/gadget/u_f.c @@ -12,14 +12,16 @@ */ #include "u_f.h" +#include <linux/usb/ch9.h> -struct usb_request *alloc_ep_req(struct usb_ep *ep, int len, int default_len) +struct usb_request *alloc_ep_req(struct usb_ep *ep, size_t len) { struct usb_request *req; req = usb_ep_alloc_request(ep, GFP_ATOMIC); if (req) { - req->length = len ?: default_len; + req->length = usb_endpoint_dir_out(ep->desc) ? + usb_ep_align(ep, len) : len; req->buf = kmalloc(req->length, GFP_ATOMIC); if (!req->buf) { usb_ep_free_request(ep, req); diff --git a/drivers/usb/gadget/u_f.h b/drivers/usb/gadget/u_f.h index 4247cc098a89..7d53a4773d1a 100644 --- a/drivers/usb/gadget/u_f.h +++ b/drivers/usb/gadget/u_f.h @@ -47,8 +47,21 @@ struct usb_ep; struct usb_request; -/* Requests allocated via alloc_ep_req() must be freed by free_ep_req(). */ -struct usb_request *alloc_ep_req(struct usb_ep *ep, int len, int default_len); +/** + * alloc_ep_req - returns a usb_request allocated by the gadget driver and + * allocates the request's buffer. + * + * @ep: the endpoint to allocate a usb_request + * @len: usb_requests's buffer suggested size + * + * In case @ep direction is OUT, the @len will be aligned to ep's + * wMaxPacketSize. In order to avoid memory leaks or drops, *always* use + * usb_requests's length (req->length) to refer to the allocated buffer size. + * Requests allocated via alloc_ep_req() *must* be freed by free_ep_req(). + */ +struct usb_request *alloc_ep_req(struct usb_ep *ep, size_t len); + +/* Frees a usb_request previously allocated by alloc_ep_req() */ static inline void free_ep_req(struct usb_ep *ep, struct usb_request *req) { kfree(req->buf); diff --git a/drivers/usb/gadget/udc/core.c b/drivers/usb/gadget/udc/core.c index 40c04bb25f2f..9483489080f6 100644 --- a/drivers/usb/gadget/udc/core.c +++ b/drivers/usb/gadget/udc/core.c @@ -107,10 +107,8 @@ int usb_ep_enable(struct usb_ep *ep) goto out; ret = ep->ops->enable(ep, ep->desc); - if (ret) { - ret = ret; + if (ret) goto out; - } ep->enabled = true; diff --git a/drivers/usb/gadget/udc/fsl_qe_udc.c b/drivers/usb/gadget/udc/fsl_qe_udc.c index 8bb011ea78f7..4fff51b8a18e 100644 --- a/drivers/usb/gadget/udc/fsl_qe_udc.c +++ b/drivers/usb/gadget/udc/fsl_qe_udc.c @@ -421,10 +421,8 @@ static int qe_ep_rxbd_update(struct qe_ep *ep) bd = ep->rxbase; ep->rxframe = kmalloc(sizeof(*ep->rxframe), GFP_ATOMIC); - if (ep->rxframe == NULL) { - dev_err(ep->udc->dev, "malloc rxframe failed\n"); + if (!ep->rxframe) return -ENOMEM; - } qe_frame_init(ep->rxframe); @@ -435,9 +433,7 @@ static int qe_ep_rxbd_update(struct qe_ep *ep) size = (ep->ep.maxpacket + USB_CRC_SIZE + 2) * (bdring_len + 1); ep->rxbuffer = kzalloc(size, GFP_ATOMIC); - if (ep->rxbuffer == NULL) { - dev_err(ep->udc->dev, "malloc rxbuffer failed,size=%d\n", - size); + if (!ep->rxbuffer) { kfree(ep->rxframe); return -ENOMEM; } @@ -668,10 +664,8 @@ static int qe_ep_init(struct qe_udc *udc, if ((ep->tm == USBP_TM_CTL) || (ep->dir == USB_DIR_IN)) { ep->txframe = kmalloc(sizeof(*ep->txframe), GFP_ATOMIC); - if (ep->txframe == NULL) { - dev_err(udc->dev, "malloc txframe failed\n"); + if (!ep->txframe) goto en_done2; - } qe_frame_init(ep->txframe); } @@ -2344,10 +2338,8 @@ static struct qe_udc *qe_udc_config(struct platform_device *ofdev) u32 offset; udc = kzalloc(sizeof(*udc), GFP_KERNEL); - if (udc == NULL) { - dev_err(&ofdev->dev, "malloc udc failed\n"); + if (!udc) goto cleanup; - } udc->dev = &ofdev->dev; diff --git a/drivers/usb/gadget/udc/goku_udc.c b/drivers/usb/gadget/udc/goku_udc.c index d2205d9e0c8b..5107987bd353 100644 --- a/drivers/usb/gadget/udc/goku_udc.c +++ b/drivers/usb/gadget/udc/goku_udc.c @@ -1767,8 +1767,7 @@ static int goku_probe(struct pci_dev *pdev, const struct pci_device_id *id) /* alloc, and start init */ dev = kzalloc (sizeof *dev, GFP_KERNEL); - if (dev == NULL){ - pr_debug("enomem %s\n", pci_name(pdev)); + if (!dev) { retval = -ENOMEM; goto err; } @@ -1839,6 +1838,8 @@ static int goku_probe(struct pci_dev *pdev, const struct pci_device_id *id) err: if (dev) goku_remove (pdev); + /* gadget_release is not registered yet, kfree explicitly */ + kfree(dev); return retval; } diff --git a/drivers/usb/gadget/udc/net2280.c b/drivers/usb/gadget/udc/net2280.c index 614ab951a4ae..61c938c36d88 100644 --- a/drivers/usb/gadget/udc/net2280.c +++ b/drivers/usb/gadget/udc/net2280.c @@ -589,7 +589,7 @@ static void net2280_free_request(struct usb_ep *_ep, struct usb_request *_req) ep = container_of(_ep, struct net2280_ep, ep); if (!_ep || !_req) { - dev_err(&ep->dev->pdev->dev, "%s: Inavlid ep=%p or req=%p\n", + dev_err(&ep->dev->pdev->dev, "%s: Invalid ep=%p or req=%p\n", __func__, _ep, _req); return; } @@ -1137,8 +1137,10 @@ dma_done(struct net2280_ep *ep, struct net2280_request *req, u32 dmacount, done(ep, req, status); } -static void scan_dma_completions(struct net2280_ep *ep) +static int scan_dma_completions(struct net2280_ep *ep) { + int num_completed = 0; + /* only look at descriptors that were "naturally" retired, * so fifo and list head state won't matter */ @@ -1166,6 +1168,7 @@ static void scan_dma_completions(struct net2280_ep *ep) break; /* single transfer mode */ dma_done(ep, req, tmp, 0); + num_completed++; break; } else if (!ep->is_in && (req->req.length % ep->ep.maxpacket) && @@ -1194,7 +1197,10 @@ static void scan_dma_completions(struct net2280_ep *ep) } } dma_done(ep, req, tmp, 0); + num_completed++; } + + return num_completed; } static void restart_dma(struct net2280_ep *ep) @@ -1567,6 +1573,44 @@ static struct usb_ep *net2280_match_ep(struct usb_gadget *_gadget, return ep; } + /* USB3380: Only first four endpoints have DMA channels. Allocate + * slower interrupt endpoints from PIO hw endpoints, to allow bulk/isoc + * endpoints use DMA hw endpoints. + */ + if (usb_endpoint_type(desc) == USB_ENDPOINT_XFER_INT && + usb_endpoint_dir_in(desc)) { + ep = gadget_find_ep_by_name(_gadget, "ep2in"); + if (ep && usb_gadget_ep_match_desc(_gadget, ep, desc, ep_comp)) + return ep; + ep = gadget_find_ep_by_name(_gadget, "ep4in"); + if (ep && usb_gadget_ep_match_desc(_gadget, ep, desc, ep_comp)) + return ep; + } else if (usb_endpoint_type(desc) == USB_ENDPOINT_XFER_INT && + !usb_endpoint_dir_in(desc)) { + ep = gadget_find_ep_by_name(_gadget, "ep1out"); + if (ep && usb_gadget_ep_match_desc(_gadget, ep, desc, ep_comp)) + return ep; + ep = gadget_find_ep_by_name(_gadget, "ep3out"); + if (ep && usb_gadget_ep_match_desc(_gadget, ep, desc, ep_comp)) + return ep; + } else if (usb_endpoint_type(desc) != USB_ENDPOINT_XFER_BULK && + usb_endpoint_dir_in(desc)) { + ep = gadget_find_ep_by_name(_gadget, "ep1in"); + if (ep && usb_gadget_ep_match_desc(_gadget, ep, desc, ep_comp)) + return ep; + ep = gadget_find_ep_by_name(_gadget, "ep3in"); + if (ep && usb_gadget_ep_match_desc(_gadget, ep, desc, ep_comp)) + return ep; + } else if (usb_endpoint_type(desc) != USB_ENDPOINT_XFER_BULK && + !usb_endpoint_dir_in(desc)) { + ep = gadget_find_ep_by_name(_gadget, "ep2out"); + if (ep && usb_gadget_ep_match_desc(_gadget, ep, desc, ep_comp)) + return ep; + ep = gadget_find_ep_by_name(_gadget, "ep4out"); + if (ep && usb_gadget_ep_match_desc(_gadget, ep, desc, ep_comp)) + return ep; + } + /* USB3380: use same address for usb and hardware endpoints */ snprintf(name, sizeof(name), "ep%d%s", usb_endpoint_num(desc), usb_endpoint_dir_in(desc) ? "in" : "out"); @@ -2547,8 +2591,11 @@ static void handle_ep_small(struct net2280_ep *ep) /* manual DMA queue advance after short OUT */ if (likely(ep->dma)) { if (t & BIT(SHORT_PACKET_TRANSFERRED_INTERRUPT)) { - u32 count; + struct net2280_request *stuck_req = NULL; int stopped = ep->stopped; + int num_completed; + int stuck = 0; + u32 count; /* TRANSFERRED works around OUT_DONE erratum 0112. * we expect (N <= maxpacket) bytes; host wrote M. @@ -2560,7 +2607,7 @@ static void handle_ep_small(struct net2280_ep *ep) /* any preceding dma transfers must finish. * dma handles (M >= N), may empty the queue */ - scan_dma_completions(ep); + num_completed = scan_dma_completions(ep); if (unlikely(list_empty(&ep->queue) || ep->out_overflow)) { req = NULL; @@ -2580,6 +2627,31 @@ static void handle_ep_small(struct net2280_ep *ep) req = NULL; break; } + + /* Escape loop if no dma transfers completed + * after few retries. + */ + if (num_completed == 0) { + if (stuck_req == req && + readl(&ep->dma->dmadesc) != + req->td_dma && stuck++ > 5) { + count = readl( + &ep->dma->dmacount); + count &= DMA_BYTE_COUNT_MASK; + req = NULL; + ep_dbg(ep->dev, "%s escape stuck %d, count %u\n", + ep->ep.name, stuck, + count); + break; + } else if (stuck_req != req) { + stuck_req = req; + stuck = 0; + } + } else { + stuck_req = NULL; + stuck = 0; + } + udelay(1); } diff --git a/drivers/usb/gadget/udc/omap_udc.c b/drivers/usb/gadget/udc/omap_udc.c index 9b7d39484ed3..a8709f9e5648 100644 --- a/drivers/usb/gadget/udc/omap_udc.c +++ b/drivers/usb/gadget/udc/omap_udc.c @@ -2875,7 +2875,7 @@ bad_on_1710: xceiv = NULL; /* "udc" is now valid */ pullup_disable(udc); -#if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE) +#if IS_ENABLED(CONFIG_USB_OHCI_HCD) udc->gadget.is_otg = (config->otg != 0); #endif diff --git a/drivers/usb/gadget/udc/pxa27x_udc.c b/drivers/usb/gadget/udc/pxa27x_udc.c index ad140aa00132..7fa60f5b7ae4 100644 --- a/drivers/usb/gadget/udc/pxa27x_udc.c +++ b/drivers/usb/gadget/udc/pxa27x_udc.c @@ -33,6 +33,7 @@ #include <linux/usb.h> #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> +#include <linux/usb/phy.h> #include "pxa27x_udc.h" @@ -1655,6 +1656,37 @@ static int pxa_udc_vbus_draw(struct usb_gadget *_gadget, unsigned mA) return -EOPNOTSUPP; } +/** + * pxa_udc_phy_event - Called by phy upon VBus event + * @nb: notifier block + * @action: phy action, is vbus connect or disconnect + * @data: the usb_gadget structure in pxa_udc + * + * Called by the USB Phy when a cable connect or disconnect is sensed. + * + * Returns 0 + */ +static int pxa_udc_phy_event(struct notifier_block *nb, unsigned long action, + void *data) +{ + struct usb_gadget *gadget = data; + + switch (action) { + case USB_EVENT_VBUS: + usb_gadget_vbus_connect(gadget); + return NOTIFY_OK; + case USB_EVENT_NONE: + usb_gadget_vbus_disconnect(gadget); + return NOTIFY_OK; + default: + return NOTIFY_DONE; + } +} + +static struct notifier_block pxa27x_udc_phy = { + .notifier_call = pxa_udc_phy_event, +}; + static int pxa27x_udc_start(struct usb_gadget *g, struct usb_gadget_driver *driver); static int pxa27x_udc_stop(struct usb_gadget *g); @@ -2432,7 +2464,14 @@ static int pxa_udc_probe(struct platform_device *pdev) return udc->irq; udc->dev = &pdev->dev; - udc->transceiver = usb_get_phy(USB_PHY_TYPE_USB2); + if (of_have_populated_dt()) { + udc->transceiver = + devm_usb_get_phy_by_phandle(udc->dev, "phys", 0); + if (IS_ERR(udc->transceiver)) + return PTR_ERR(udc->transceiver); + } else { + udc->transceiver = usb_get_phy(USB_PHY_TYPE_USB2); + } if (IS_ERR(udc->gpiod)) { dev_err(&pdev->dev, "Couldn't find or request D+ gpio : %ld\n", @@ -2465,14 +2504,20 @@ static int pxa_udc_probe(struct platform_device *pdev) goto err; } + if (!IS_ERR_OR_NULL(udc->transceiver)) + usb_register_notifier(udc->transceiver, &pxa27x_udc_phy); retval = usb_add_gadget_udc(&pdev->dev, &udc->gadget); if (retval) - goto err; + goto err_add_gadget; pxa_init_debugfs(udc); if (should_enable_udc(udc)) udc_enable(udc); return 0; + +err_add_gadget: + if (!IS_ERR_OR_NULL(udc->transceiver)) + usb_unregister_notifier(udc->transceiver, &pxa27x_udc_phy); err: clk_unprepare(udc->clk); return retval; @@ -2489,6 +2534,8 @@ static int pxa_udc_remove(struct platform_device *_dev) usb_del_gadget_udc(&udc->gadget); pxa_cleanup_debugfs(udc); + if (!IS_ERR_OR_NULL(udc->transceiver)) + usb_unregister_notifier(udc->transceiver, &pxa27x_udc_phy); usb_put_phy(udc->transceiver); udc->transceiver = NULL; diff --git a/drivers/usb/gadget/udc/udc-xilinx.c b/drivers/usb/gadget/udc/udc-xilinx.c index f8bf290f1894..588e2531b8b8 100644 --- a/drivers/usb/gadget/udc/udc-xilinx.c +++ b/drivers/usb/gadget/udc/udc-xilinx.c @@ -973,10 +973,8 @@ static struct usb_request *xudc_ep_alloc_request(struct usb_ep *_ep, udc = ep->udc; req = kzalloc(sizeof(*req), gfp_flags); - if (!req) { - dev_err(udc->dev, "%s:not enough memory", __func__); + if (!req) return NULL; - } req->ep = ep; INIT_LIST_HEAD(&req->queue); |