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device/xhci: Add struct for capability registers 

The XHCI code does not currently contain a structure that corresponds
to the XHCI capability registers. These registers contain various
useful information about the controller. Create a`xhci_capability_regs`
struct to address this.

BRANCH=guybrush
BUG=b:186792595
TEST=builds

Change-Id: If38bfde726bd4e5dd314456f25a2b08acd3cd20c
Signed-off-by: Robert Zieba <robertzieba@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69915
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
This commit is contained in:
Robert Zieba 2022-11-21 22:25:53 +00:00 committed by Felix Held
parent 5dbd3df03c
commit eb7b589f8f
1 changed files with 13 additions and 0 deletions
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13
src/include/device/xhci.h
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@ -94,6 +94,19 @@ struct xhci_usb_info {
uint32_t num_usb3_ports;
};
struct xhci_capability_regs {
uint8_t caplength;
uint8_t reserved0;
uint16_t hciversion;
uint32_t hcsparams1;
uint32_t hcsparams2;
uint32_t hcsparams3;
uint32_t hccparams1;
uint32_t dboff;
uint32_t rtsoff;
uint32_t hccparams2;
} __packed;
/**
* Iterates over the xHCI Extended Capabilities List.
*/