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usb: hub class driver

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Matheus
2026-05-13 12:04:17 -03:00
parent 53f444eb2f
commit 9c45a41abe
8 changed files with 598 additions and 20 deletions
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kernel-src/io/usb/ctrl/xhci_ctrl.c
+44 -6
View File
@@ -90,6 +90,35 @@ static void xhci_update_input_context(xhci_ctrl_t *ctrl, xhci_device_t *dev) {
memset(input_ctx, 0, sizeof(uint32_t) * 2);
}
static int xhci_update_hub_slot_context(usb_device_t *dev, volatile xhci_slot_ctx_t *slot_ctx) {
if (dev->hub_desc == NULL)
return 0;
slot_ctx->dw0.hub = 1;
if (dev->hub_desc->bDescriptorType == USB_DESCRIPTOR_TYPE_SS_HUB) {
if (dev->hub_desc->bLength < sizeof(usb_ss_hub_desc_t))
return EINVAL;
usb_ss_hub_desc_t *hub_desc = (usb_ss_hub_desc_t *)dev->hub_desc;
slot_ctx->dw0.mtt = 0;
slot_ctx->dw1.number_of_ports = hub_desc->bNbrPorts;
return 0;
}
if (dev->hub_desc->bDescriptorType == USB_DESCRIPTOR_TYPE_HUB) {
if (dev->hub_desc->bLength < sizeof(usb_hub_desc_t))
return EINVAL;
usb_hub_desc_t *hub_desc = (usb_hub_desc_t *)dev->hub_desc;
slot_ctx->dw0.mtt = dev->desc.bDeviceProtocol == USB_HUB_PROTOCOL_MULTI_TT;
slot_ctx->dw1.number_of_ports = hub_desc->bNbrPorts;
return 0;
}
return EINVAL;
}
static void xhci_release_device_resources(xhci_ctrl_t *xhci, xhci_device_t *dev) {
for (int i = 0; i < 31; ++i) {
if (dev->ep_rings[i].ring != NULL)
@@ -324,7 +353,7 @@ static void address_device_create_slot_callback(usb_device_t *device, void *ctx,
xhci_ring_command_doorbell(xhci);
}
static int xhci_ctrl_address_device(usb_ctrl_t *ctrl, usb_hub_t *hub, uint8_t port, usb_address_device_callback_t callback) {
static int xhci_ctrl_address_device(usb_ctrl_t *ctrl, usb_hub_t *hub, uint8_t port, usb_speed_t speed, usb_address_device_callback_t callback) {
++port; // convert to the format xhci expects
xhci_ctrl_t *xhci = container_of(ctrl, xhci_ctrl_t, ctrl);
@@ -378,7 +407,6 @@ static int xhci_ctrl_address_device(usb_ctrl_t *ctrl, usb_hub_t *hub, uint8_t po
xhci_dev->root_port_number = port;
}
// TODO the device speed is gonna come from elsewhere and not from the (just now allocated) usb device
if (hub->device == NULL) {
// this is a root hub! we can just take the speed directly from the portsc register
xhci_root_hub_t *rh = container_of(hub, xhci_root_hub_t, hub);
@@ -386,10 +414,13 @@ static int xhci_ctrl_address_device(usb_ctrl_t *ctrl, usb_hub_t *hub, uint8_t po
uint32_t port_speed = (portsc >> 10) & 0xf;
xhci_dev->ctrl_speed = port_speed;
xhci_dev->device.speed = xhci_speed_to_usb_speed(port_speed);
} else if (!usb_speed_to_xhci_speed(xhci_dev->device.speed, &xhci_dev->ctrl_speed)) {
// this is a super speed plus device behind a hub.
// we can't know its speed in advance, so set it as super speed and figure it out later.
xhci_dev->ctrl_speed = XHCI_PORT_SPEED_SUPER;
} else {
xhci_dev->device.speed = speed;
if (!usb_speed_to_xhci_speed(xhci_dev->device.speed, &xhci_dev->ctrl_speed)) {
// This is a super speed plus device behind a hub.
// We can't know its speed in advance, so set it as super speed and figure it out later.
xhci_dev->ctrl_speed = XHCI_PORT_SPEED_SUPER;
}
}
xhci_submission_t xhci_submission = {
@@ -463,6 +494,13 @@ static int xhci_ctrl_configure_ep(usb_ctrl_t *ctrl, usb_device_t *dev, usb_endpo
if (slot_ctx->dw0.ctx_entries < ep_index)
slot_ctx->dw0.ctx_entries = ep_index;
int error = xhci_update_hub_slot_context(dev, slot_ctx);
if (error) {
free(configure_ctx);
xhci_release_ep_ring(xhci_dev, ep_index);
return error;
}
// Set up the endpoint context.
uint8_t ep_type = ep->desc->bmAttributes & USB_ENDPOINT_ATTRIB_TYPE_MASK;
uint16_t max_packet_size = usb_endpoint_max_packet_size(ep->desc);
kernel-src/io/usb/ctrl/xhci_hub.c
+1 -1
View File
@@ -37,7 +37,7 @@ void xhci_handle_port_change_event(xhci_ctrl_t *xhci, int global_port) {
usb_hub_event_disconnect(&hub->hub, local_port);
usb_hub_event_connect(&hub->hub, local_port);
} else if (reset_event) {
usb_hub_event_reset(&hub->hub, local_port);
usb_hub_event_reset(&hub->hub, local_port, USB_SPEED_UNKNOWN);
}
xhci->portregs[global_port - 1].portsc = (portsc & XHCI_PORTSC_PRESERVE_BITS) |