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/*
* Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Hyra nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _USB_XHCIREGS_H_
#define _USB_XHCIREGS_H_
#include <sys/types.h>
#include <sys/cdefs.h>
/*
* Host Controller Capability Registers
*
* See xHCI spec, section 5.3, table 5-9
*/
struct __packed xhci_caps {
volatile uint8_t caplength;
volatile uint8_t reserved;
volatile uint16_t hciversion;
volatile uint32_t hcsparams1;
volatile uint32_t hcsparams2;
volatile uint32_t hcsparams3;
volatile uint32_t hccparams1;
volatile uint32_t dboff;
volatile uint32_t rtsoff;
volatile uint32_t hccparams2;
};
/*
* Host Controller Operational Registers
*
* See xHCI spec, section 5.4, table 5-18
*/
struct __packed xhci_opregs {
volatile uint32_t usbcmd;
volatile uint32_t usbsts;
volatile uint32_t pagesize;
volatile uint32_t reserved;
volatile uint32_t reserved1;
volatile uint32_t dnctrl;
volatile uint64_t cmd_ring;
volatile uint32_t reserved2[4];
volatile uint64_t dcbaa_ptr;
volatile uint32_t config;
};
/* USBCMD bits */
#define USBCMD_RUN __BIT(0) /* Run/stop */
#define USBCMD_HCRST __BIT(1) /* xHC reset */
/* USBSTS bits */
#define USBSTS_HCH __BIT(0) /* HC halted */
/* CAPS.HCSPARAMS1 fields */
#define XHCI_MAXSLOTS(HCSPARAMS1) (HCSPARAMS1 & 0xFF)
#define XHCI_MAXPORTS(HCSPARAMS1) ((HCSPARAMS1 >> 24) & 0xFF)
#define XHCI_ECP(HCCPARAMS1) ((HCCPARAMS1 >> 16) & 0xFFFF)
/* CAPS.HCSPARAMS2 fields */
#define XHCI_MAX_SP_HI(HCSPARAMS2) ((HCSPARAMS2 >> 25) & 0x1F)
#define XHCI_MAX_SP_LO(HCSPARAMS2) ((HCSPARAMS2 >> 31) & 0x1F)
/* PORTSC bits */
#define XHCI_PORTSC_CCS __BIT(0) /* Current connect status */
#define XHCI_PORTSC_PR __BIT(4) /* Port reset */
/* Registers */
#define XHCI_BASE_OFF(BASE, OFF) (void *)((uintptr_t)BASE + OFF)
#define XHCI_CAPS(BASE) XHCI_BASE_OFF(BASE, 0)
#define XHCI_OPBASE(BASE, CAP_LEN) XHCI_BASE_OFF(BASE, CAP_LEN)
#define XHCI_RTS(BASE, RTSOFF) XHCI_BASE_OFF(BASE, RTSOFF)
#define XHCI_CMD_DB(BASE, DBOFF) XHCI_BASE_OFF(BASE, DBOFF)
/* Support protocol cap fields */
#define XHCI_PROTO_ID(PROTO) (PROTO & 0xFF)
#define XHCI_PROTO_MINOR(PROTO) ((PROTO >> 16) & 0xFF)
#define XHCI_PROTO_MAJOR(PROTO) ((PROTO >> 24) & 0xFF)
#define XHCI_PROTO_NEXT(PROTO) ((PROTO >> 8) & 0xFF)
#define XHCI_PROTO_PORTOFF(PROTO2) (PROTO2 & 0xFF)
#define XHCI_PROTO_PORTCNT(PROTO2) ((PROTO2 >> 8) & 0xFF)
/* Extended cap IDs */
#define XHCI_ECAP_PROTO 2
#endif /* !_USB_XHCIREGS_H_ */
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