diff options
| author | Huang Rui <ray.huang@amd.com> | 2013-10-30 11:27:39 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-10-30 09:57:21 -0700 |
| commit | b8fef79518f6a6843e53a4d578c20873ce742a1f (patch) | |
| tree | 018d7e60c45a0737d77a8a4b5d729ac07b142a30 /drivers/usb | |
| parent | 82f92672ac3e36458fdb298f798913da8460fce9 (diff) | |
| download | linux-b8fef79518f6a6843e53a4d578c20873ce742a1f.tar.gz | |
usb: usbtest: support superspeed device capbility descriptor test
In Test 9 of usbtest module, it is used for performing chapter 9 tests N
times.
SuperSpeed USB Device Capability descriptor is one of the generic
device-level capbility descriptors which added in section 9.6.2.2 of USB
3.0 spec.
This patch adds to support getting SuperSpeed USB Device Capability
descriptor test scenario for USB 3.0.
Signed-off-by: Huang Rui <ray.huang@amd.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/misc/usbtest.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c index 1c78e747f72b..d6fcbc477fc5 100644 --- a/drivers/usb/misc/usbtest.c +++ b/drivers/usb/misc/usbtest.c @@ -628,6 +628,35 @@ static int is_good_ext(struct usbtest_dev *tdev, u8 *buf) return 1; } +static int is_good_ss_cap(struct usbtest_dev *tdev, u8 *buf) +{ + struct usb_ss_cap_descriptor *ss; + + ss = (struct usb_ss_cap_descriptor *) buf; + + if (ss->bLength != USB_DT_USB_SS_CAP_SIZE) { + ERROR(tdev, "bogus superspeed device capability descriptor length\n"); + return 0; + } + + /* + * only bit[1] of bmAttributes is used for LTM and others are + * reserved + */ + if (ss->bmAttributes & ~0x02) { /* reserved == 0 */ + ERROR(tdev, "reserved bits set in bmAttributes\n"); + return 0; + } + + /* bits[0:3] of wSpeedSupported is used and others are reserved */ + if (le16_to_cpu(ss->wSpeedSupported) & ~0x0f) { /* reserved == 0 */ + ERROR(tdev, "reserved bits set in wSpeedSupported\n"); + return 0; + } + + return 1; +} + /* sanity test for standard requests working with usb_control_mesg() and some * of the utility functions which use it. * @@ -773,6 +802,14 @@ static int ch9_postconfig(struct usbtest_dev *dev) return -EDOM; } break; + case USB_SS_CAP_TYPE: + if (buf + USB_DT_USB_SS_CAP_SIZE > + dev->buf + total || + !is_good_ss_cap(dev, buf)) { + dev_err(&iface->dev, "bogus superspeed device capability descriptor\n"); + return -EDOM; + } + break; default: break; } |