2c952d6bd9
There is some boilerplate required to iterate over the USB supported protocol structs. Encapsulate all the in a method to make the callers simpler. BUG=b:154756391 TEST=Built test trembyle. Signed-off-by: Raul E Rangel <rrangel@chromium.org> Change-Id: I401f10d242638b0000ba697573856d765333dca0 Reviewed-on: https://review.coreboot.org/c/coreboot/+/43352 Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
65 lines
1.5 KiB
C
65 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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#ifndef __DEVICE_XHCI_H__
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#define __DEVICE_XHCI_H__
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#include <stdint.h>
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#include <device/device.h>
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#include <commonlib/bsd/cb_err.h>
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#define XHCI_HCCPARAMS1_XECP 0x12
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#define XHCI_ECP_CAP_ID_LEGACY 1
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#define XHCI_ECP_CAP_ID_SUPP 2
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struct xhci_supported_protocol {
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union {
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uint32_t reg0;
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struct {
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uint32_t cap_id : 8;
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uint32_t next_ptr : 8;
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uint32_t minor_rev : 8;
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uint32_t major_rev : 8;
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};
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};
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union {
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uint32_t reg1;
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char name[4];
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};
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union {
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uint32_t reg2;
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struct {
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uint32_t port_offset : 8;
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uint32_t port_count : 8;
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uint32_t reserved : 12;
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uint32_t protocol_speed_id_count : 4;
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};
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};
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};
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struct xhci_ext_cap {
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uint32_t cap_id;
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/* cap_id is used to select the correct struct in the union. */
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union {
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struct xhci_supported_protocol supported_protocol;
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};
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};
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/**
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* Iterates over the xHCI Extended Capabilities List.
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*/
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enum cb_err xhci_for_each_ext_cap(const struct device *device, void *context,
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void (*callback)(void *context,
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const struct xhci_ext_cap *cap));
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/**
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* Helper method that iterates over only the USB supported capabilities structures in the
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* xHCI Extended Capabilities List.
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*/
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enum cb_err xhci_for_each_supported_usb_cap(
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const struct device *device, void *context,
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void (*callback)(void *context, const struct xhci_supported_protocol *data));
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void xhci_print_supported_protocol(const struct xhci_supported_protocol *supported_protocol);
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#endif /* __DEVICE_XHCI_H__ */
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