diff options
Diffstat (limited to 'payloads/libpayload/drivers/usb/usbhub.c')
| -rw-r--r-- | payloads/libpayload/drivers/usb/usbhub.c | 42 |
1 files changed, 36 insertions, 6 deletions
diff --git a/payloads/libpayload/drivers/usb/usbhub.c b/payloads/libpayload/drivers/usb/usbhub.c index e12fd92c3f..f75141eae5 100644 --- a/payloads/libpayload/drivers/usb/usbhub.c +++ b/payloads/libpayload/drivers/usb/usbhub.c @@ -42,6 +42,8 @@ #define SEL_PORT_RESET 0x4 #define SEL_PORT_POWER 0x8 #define SEL_C_PORT_CONNECTION 0x10 +/* request type (USB 3.0 hubs only) */ +#define SET_HUB_DEPTH 12 static int usb_hub_port_status_changed(usbdev_t *const dev, const int port) @@ -93,17 +95,21 @@ usb_hub_port_speed(usbdev_t *const dev, const int port) unsigned short buf[2]; int ret = get_status (dev, port, DR_PORT, sizeof(buf), buf); if (ret >= 0 && (buf[0] & PORT_ENABLE)) { - /* bit 10 9 + /* SuperSpeed hubs can only have SuperSpeed devices. */ + if (dev->speed == SUPER_SPEED) + return SUPER_SPEED; + + /*[bit] 10 9 (USB 2.0 port status word) * 0 0 full speed * 0 1 low speed * 1 0 high speed - * 1 1 super speed (hack, not in spec!) + * 1 1 invalid */ ret = (buf[0] >> 9) & 0x3; - } else { - ret = -1; + if (ret != 0x3) + return ret; } - return ret; + return -1; } static int @@ -118,6 +124,27 @@ usb_hub_start_port_reset(usbdev_t *const dev, const int port) return set_feature (dev, port, SEL_PORT_RESET, DR_PORT); } +static void usb_hub_set_hub_depth(usbdev_t *const dev) +{ + dev_req_t dr = { + .bmRequestType = gen_bmRequestType(host_to_device, + class_type, dev_recp), + .bRequest = SET_HUB_DEPTH, + .wValue = 0, + .wIndex = 0, + .wLength = 0, + }; + usbdev_t *parent = dev; + while (parent->hub > 0) { + parent = dev->controller->devices[parent->hub]; + dr.wValue++; + } + int ret = dev->controller->control(dev, OUT, sizeof(dr), &dr, 0, NULL); + if (ret < 0) + usb_debug("Failed SET_HUB_DEPTH(%d) on hub %d: %d\n", + dr.wValue, dev->address, ret); +} + static const generic_hub_ops_t usb_hub_ops = { .hub_status_changed = NULL, .port_status_changed = usb_hub_port_status_changed, @@ -134,13 +161,16 @@ static const generic_hub_ops_t usb_hub_ops = { void usb_hub_init(usbdev_t *const dev) { + int type = dev->speed == SUPER_SPEED ? 0x2a : 0x29; /* similar enough */ hub_descriptor_t desc; /* won't fit the whole thing, we don't care */ if (get_descriptor(dev, gen_bmRequestType(device_to_host, class_type, - dev_recp), 0x29, 0, &desc, sizeof(desc)) != sizeof(desc)) { + dev_recp), type, 0, &desc, sizeof(desc)) != sizeof(desc)) { usb_debug("get_descriptor(HUB) failed\n"); usb_detach_device(dev->controller, dev->address); return; } + if (dev->speed == SUPER_SPEED) + usb_hub_set_hub_depth(dev); generic_hub_init(dev, desc.bNbrPorts, &usb_hub_ops); } |