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/*-
* Copyright (c) 2007-2008, Juniper Networks, Inc.
* All rights reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation version 2 of
* the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#ifndef USB_EHCI_H
#define USB_EHCI_H
/* (shifted) direction/type/recipient from the USB 2.0 spec, table 9.2 */
#define DeviceRequest \
((USB_DIR_IN | USB_TYPE_STANDARD | USB_RECIP_DEVICE) << 8)
#define DeviceOutRequest \
((USB_DIR_OUT | USB_TYPE_STANDARD | USB_RECIP_DEVICE) << 8)
#define InterfaceRequest \
((USB_DIR_IN | USB_TYPE_STANDARD | USB_RECIP_INTERFACE) << 8)
#define EndpointRequest \
((USB_DIR_IN | USB_TYPE_STANDARD | USB_RECIP_INTERFACE) << 8)
#define EndpointOutRequest \
((USB_DIR_OUT | USB_TYPE_STANDARD | USB_RECIP_INTERFACE) << 8)
/*
* Register Space.
*/
struct ehci_hccr {
uint8_t cr_caplength;
uint16_t cr_hciversion;
uint32_t cr_hcsparams;
uint32_t cr_hccparams;
uint8_t cr_hcsp_portrt[8];
};
struct ehci_hcor {
uint32_t or_usbcmd;
uint32_t or_usbsts;
uint32_t or_usbintr;
uint32_t or_frindex;
uint32_t or_ctrldssegment;
uint32_t or_periodiclistbase;
uint32_t or_asynclistaddr;
uint32_t _reserved_[9];
uint32_t or_configflag;
uint32_t or_portsc[2];
uint32_t or_systune;
};
#define EHCI_PS_WKOC_E 0x00400000 /* RW wake on over current */
#define EHCI_PS_WKDSCNNT_E 0x00200000 /* RW wake on disconnect */
#define EHCI_PS_WKCNNT_E 0x00100000 /* RW wake on connect */
#define EHCI_PS_PTC 0x000f0000 /* RW port test control */
#define EHCI_PS_PIC 0x0000c000 /* RW port indicator control */
#define EHCI_PS_PO 0x00002000 /* RW port owner */
#define EHCI_PS_PP 0x00001000 /* RW,RO port power */
#define EHCI_PS_LS 0x00000c00 /* RO line status */
#define EHCI_PS_PR 0x00000100 /* RW port reset */
#define EHCI_PS_SUSP 0x00000080 /* RW suspend */
#define EHCI_PS_FPR 0x00000040 /* RW force port resume */
#define EHCI_PS_OCC 0x00000020 /* RWC over current change */
#define EHCI_PS_OCA 0x00000010 /* RO over current active */
#define EHCI_PS_PEC 0x00000008 /* RWC port enable change */
#define EHCI_PS_PE 0x00000004 /* RW port enable */
#define EHCI_PS_CSC 0x00000002 /* RWC connect status change */
#define EHCI_PS_CS 0x00000001 /* RO connect status */
#define EHCI_PS_CLEAR (EHCI_PS_OCC | EHCI_PS_PEC | EHCI_PS_CSC)
#define EHCI_PS_IS_LOWSPEED(x) (((x) & EHCI_PS_LS) == 0x00000400)
/*
* Schedule Interface Space.
*
* IMPORTANT: Software must ensure that no interface data structure
* reachable by the EHCI host controller spans a 4K page boundary!
*
* Periodic transfers (i.e. isochronous and interrupt transfers) are
* not supported.
*/
/* Queue Element Transfer Descriptor (qTD). */
struct qTD {
uint32_t qt_next;
#define QT_NEXT_TERMINATE 1
uint32_t qt_altnext;
uint32_t qt_token;
uint32_t qt_buffer[5];
};
/* Queue Head (QH). */
struct QH {
uint32_t qh_link;
#define QH_LINK_TERMINATE 1
#define QH_LINK_TYPE_ITD 0
#define QH_LINK_TYPE_QH 2
#define QH_LINK_TYPE_SITD 4
#define QH_LINK_TYPE_FSTN 6
uint32_t qh_endpt1;
uint32_t qh_endpt2;
uint32_t qh_curtd;
struct qTD qh_overlay;
};
/* Low level intit functions */
int ehci_hcd_init(void);
int ehci_hcd_stop(void);
#endif /* USB_EHCI_H */
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