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Fix scanning of an external USB hub attached to an Intel XHCI (issue #135)

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The Intel controller requires unused fields in the input context to be zero.
This commit is contained in:
Martin Whitaker 2022-08-05 20:40:18 +01:00
parent 8a3cac8133
commit 1316c6c099
1 changed files with 3 additions and 0 deletions
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3
system/xhci.c
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@ -718,6 +718,8 @@ static bool assign_address(const usb_hcd_t *hcd, const usb_hub_t *hub, int port_
// Prepare the input context for the ADDRESS_DEVICE command.
memset((xhci_input_context_t *)ws->input_context_addr, 0, sizeof(xhci_input_context_t));
xhci_ctrl_context_t *ctrl_context = (xhci_ctrl_context_t *)ws->input_context_addr;
ctrl_context->add_context_flags = XHCI_CONTEXT_A(0) | XHCI_CONTEXT_A(1);
@ -734,6 +736,7 @@ static bool assign_address(const usb_hcd_t *hcd, const usb_hub_t *hub, int port_
} else {
slot_context->root_hub_port_num = port_num;
}
xhci_ep_context_t *ep_context = (xhci_ep_context_t *)(ws->input_context_addr + 2 * ws->context_size);
ep_context->params2 = XHCI_EP_CONTROL << 3 | 3 << 1; // EP Type | CErr
ep_context->max_burst_size = 0;