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/*-
* Copyright (c) 2007-2008, Juniper Networks, Inc.
* Copyright (c) 2008, Michael Trimarchi <trimarchimichael@yahoo.it>
* 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
#if !defined(CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS)
#define CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS 2
#endif
/* (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 {
uint32_t cr_capbase;
#define HC_LENGTH(p) (((p) >> 0) & 0x00ff)
#define HC_VERSION(p) (((p) >> 16) & 0xffff)
uint32_t cr_hcsparams;
#define HCS_PPC(p) ((p) & (1 << 4))
#define HCS_INDICATOR(p) ((p) & (1 << 16)) /* Port indicators */
#define HCS_N_PORTS(p) (((p) >> 0) & 0xf)
uint32_t cr_hccparams;
uint8_t cr_hcsp_portrt[8];
} __attribute__ ((packed, aligned(4)));
struct ehci_hcor {
uint32_t or_usbcmd;
#define CMD_PARK (1 << 11) /* enable "park" */
#define CMD_PARK_CNT(c) (((c) >> 8) & 3) /* how many transfers to park */
#define CMD_ASE (1 << 5) /* async schedule enable */
#define CMD_LRESET (1 << 7) /* partial reset */
#define CMD_IAAD (1 << 5) /* "doorbell" interrupt */
#define CMD_PSE (1 << 4) /* periodic schedule enable */
#define CMD_RESET (1 << 1) /* reset HC not bus */
#define CMD_RUN (1 << 0) /* start/stop HC */
uint32_t or_usbsts;
#define STD_ASS (1 << 15)
#define STS_HALT (1 << 12)
uint32_t or_usbintr;
#define INTR_UE (1 << 0) /* USB interrupt enable */
#define INTR_UEE (1 << 1) /* USB error interrupt enable */
#define INTR_PCE (1 << 2) /* Port change detect enable */
#define INTR_SEE (1 << 4) /* system error enable */
#define INTR_AAE (1 << 5) /* Interrupt on async adavance enable */
uint32_t or_frindex;
uint32_t or_ctrldssegment;
uint32_t or_periodiclistbase;
uint32_t or_asynclistaddr;
uint32_t _reserved_[9];
uint32_t or_configflag;
#define FLAG_CF (1 << 0) /* true: we'll support "high speed" */
uint32_t or_portsc[CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS];
uint32_t or_systune;
} __attribute__ ((packed, aligned(4)));
#define USBMODE 0x68 /* USB Device mode */
#define USBMODE_SDIS (1 << 3) /* Stream disable */
#define USBMODE_BE (1 << 2) /* BE/LE endiannes select */
#define USBMODE_CM_HC (3 << 0) /* host controller mode */
#define USBMODE_CM_IDLE (0 << 0) /* idle state */
/* Interface descriptor */
struct usb_linux_interface_descriptor {
unsigned char bLength;
unsigned char bDescriptorType;
unsigned char bInterfaceNumber;
unsigned char bAlternateSetting;
unsigned char bNumEndpoints;
unsigned char bInterfaceClass;
unsigned char bInterfaceSubClass;
unsigned char bInterfaceProtocol;
unsigned char iInterface;
} __attribute__ ((packed));
/* Configuration descriptor information.. */
struct usb_linux_config_descriptor {
unsigned char bLength;
unsigned char bDescriptorType;
unsigned short wTotalLength;
unsigned char bNumInterfaces;
unsigned char bConfigurationValue;
unsigned char iConfiguration;
unsigned char bmAttributes;
unsigned char MaxPower;
} __attribute__ ((packed));
#if defined CONFIG_EHCI_DESC_BIG_ENDIAN
#define ehci_readl(x) (*((volatile u32 *)(x)))
#define ehci_writel(a, b) (*((volatile u32 *)(a)) = ((volatile u32)b))
#else
#define ehci_readl(x) cpu_to_le32((*((volatile u32 *)(x))))
#define ehci_writel(a, b) (*((volatile u32 *)(a)) = \
cpu_to_le32(((volatile u32)b)))
#endif
#if defined CONFIG_EHCI_MMIO_BIG_ENDIAN
#define hc32_to_cpu(x) be32_to_cpu((x))
#define cpu_to_hc32(x) cpu_to_be32((x))
#else
#define hc32_to_cpu(x) le32_to_cpu((x))
#define cpu_to_hc32(x) cpu_to_le32((x))
#endif
#define EHCI_PS_WKOC_E (1 << 22) /* RW wake on over current */
#define EHCI_PS_WKDSCNNT_E (1 << 21) /* RW wake on disconnect */
#define EHCI_PS_WKCNNT_E (1 << 20) /* RW wake on connect */
#define EHCI_PS_PO (1 << 13) /* RW port owner */
#define EHCI_PS_PP (1 << 12) /* RW,RO port power */
#define EHCI_PS_LS (3 << 10) /* RO line status */
#define EHCI_PS_PR (1 << 8) /* RW port reset */
#define EHCI_PS_SUSP (1 << 7) /* RW suspend */
#define EHCI_PS_FPR (1 << 6) /* RW force port resume */
#define EHCI_PS_OCC (1 << 5) /* RWC over current change */
#define EHCI_PS_OCA (1 << 4) /* RO over current active */
#define EHCI_PS_PEC (1 << 3) /* RWC port enable change */
#define EHCI_PS_PE (1 << 2) /* RW port enable */
#define EHCI_PS_CSC (1 << 1) /* RWC connect status change */
#define EHCI_PS_CS (1 << 0) /* 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) == (1 << 10))
/*
* 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 {
/* this part defined by EHCI spec */
uint32_t qt_next; /* see EHCI 3.5.1 */
#define QT_NEXT_TERMINATE 1
uint32_t qt_altnext; /* see EHCI 3.5.2 */
uint32_t qt_token; /* see EHCI 3.5.3 */
uint32_t qt_buffer[5]; /* see EHCI 3.5.4 */
uint32_t qt_buffer_hi[5]; /* Appendix B */
/* pad struct for 32 byte alignment */
uint32_t unused[3];
};
/* 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;
/*
* Add dummy fill value to make the size of this struct
* aligned to 32 bytes
*/
uint8_t fill[16];
};
/* Low level init functions */
int ehci_hcd_init(void);
int ehci_hcd_stop(void);
#endif /* USB_EHCI_H */
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