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/* $FreeBSD: release/9.1.0/sys/dev/usb/controller/uhci.h 229096 2011-12-31 14:22:02Z hselasky $ */
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Lennart Augustsson (lennart@augustsson.net) at
* Carlstedt Research & Technology.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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 _UHCI_H_
#define _UHCI_H_
#define UHCI_MAX_DEVICES MIN(USB_MAX_DEVICES, 128)
#define UHCI_FRAMELIST_COUNT 1024 /* units */
#define UHCI_FRAMELIST_ALIGN 4096 /* bytes */
/* Structures alignment (bytes) */
#define UHCI_TD_ALIGN 16
#define UHCI_QH_ALIGN 16
#if ((USB_PAGE_SIZE < UHCI_TD_ALIGN) || (UHCI_TD_ALIGN == 0) || \
(USB_PAGE_SIZE < UHCI_QH_ALIGN) || (UHCI_QH_ALIGN == 0))
#error "Invalid USB page size!"
#endif
typedef uint32_t uhci_physaddr_t;
#define UHCI_PTR_T 0x00000001
#define UHCI_PTR_TD 0x00000000
#define UHCI_PTR_QH 0x00000002
#define UHCI_PTR_VF 0x00000004
/*
* The Queue Heads (QH) and Transfer Descriptors (TD) are accessed by
* both the CPU and the USB-controller which run concurrently. Great
* care must be taken. When the data-structures are linked into the
* USB controller's frame list, the USB-controller "owns" the
* td_status and qh_elink fields, which will not be written by the
* CPU.
*
*/
struct uhci_td {
/*
* Data used by the UHCI controller.
* volatile is used in order to mantain struct members ordering.
*/
volatile uint32_t td_next;
volatile uint32_t td_status;
#define UHCI_TD_GET_ACTLEN(s) (((s) + 1) & 0x3ff)
#define UHCI_TD_ZERO_ACTLEN(t) ((t) | 0x3ff)
#define UHCI_TD_BITSTUFF 0x00020000
#define UHCI_TD_CRCTO 0x00040000
#define UHCI_TD_NAK 0x00080000
#define UHCI_TD_BABBLE 0x00100000
#define UHCI_TD_DBUFFER 0x00200000
#define UHCI_TD_STALLED 0x00400000
#define UHCI_TD_ACTIVE 0x00800000
#define UHCI_TD_IOC 0x01000000
#define UHCI_TD_IOS 0x02000000
#define UHCI_TD_LS 0x04000000
#define UHCI_TD_GET_ERRCNT(s) (((s) >> 27) & 3)
#define UHCI_TD_SET_ERRCNT(n) ((n) << 27)
#define UHCI_TD_SPD 0x20000000
volatile uint32_t td_token;
#define UHCI_TD_PID 0x000000ff
#define UHCI_TD_PID_IN 0x00000069
#define UHCI_TD_PID_OUT 0x000000e1
#define UHCI_TD_PID_SETUP 0x0000002d
#define UHCI_TD_GET_PID(s) ((s) & 0xff)
#define UHCI_TD_SET_DEVADDR(a) ((a) << 8)
#define UHCI_TD_GET_DEVADDR(s) (((s) >> 8) & 0x7f)
#define UHCI_TD_SET_ENDPT(e) (((e) & 0xf) << 15)
#define UHCI_TD_GET_ENDPT(s) (((s) >> 15) & 0xf)
#define UHCI_TD_SET_DT(t) ((t) << 19)
#define UHCI_TD_GET_DT(s) (((s) >> 19) & 1)
#define UHCI_TD_SET_MAXLEN(l) (((l)-1) << 21)
#define UHCI_TD_GET_MAXLEN(s) ((((s) >> 21) + 1) & 0x7ff)
#define UHCI_TD_MAXLEN_MASK 0xffe00000
volatile uint32_t td_buffer;
/*
* Extra information needed:
*/
struct uhci_td *next;
struct uhci_td *prev;
struct uhci_td *obj_next;
struct usb_page_cache *page_cache;
struct usb_page_cache *fix_pc;
uint32_t td_self;
uint16_t len;
} __aligned(UHCI_TD_ALIGN);
typedef struct uhci_td uhci_td_t;
#define UHCI_TD_ERROR (UHCI_TD_BITSTUFF | UHCI_TD_CRCTO | \
UHCI_TD_BABBLE | UHCI_TD_DBUFFER | UHCI_TD_STALLED)
#define UHCI_TD_SETUP(len, endp, dev) (UHCI_TD_SET_MAXLEN(len) | \
UHCI_TD_SET_ENDPT(endp) | \
UHCI_TD_SET_DEVADDR(dev) | \
UHCI_TD_PID_SETUP)
#define UHCI_TD_OUT(len, endp, dev, dt) (UHCI_TD_SET_MAXLEN(len) | \
UHCI_TD_SET_ENDPT(endp) | \
UHCI_TD_SET_DEVADDR(dev) | \
UHCI_TD_PID_OUT | UHCI_TD_SET_DT(dt))
#define UHCI_TD_IN(len, endp, dev, dt) (UHCI_TD_SET_MAXLEN(len) | \
UHCI_TD_SET_ENDPT(endp) | \
UHCI_TD_SET_DEVADDR(dev) | \
UHCI_TD_PID_IN | UHCI_TD_SET_DT(dt))
struct uhci_qh {
/*
* Data used by the UHCI controller.
*/
volatile uint32_t qh_h_next;
volatile uint32_t qh_e_next;
/*
* Extra information needed:
*/
struct uhci_qh *h_next;
struct uhci_qh *h_prev;
struct uhci_qh *obj_next;
struct uhci_td *e_next;
struct usb_page_cache *page_cache;
uint32_t qh_self;
uint16_t intr_pos;
} __aligned(UHCI_QH_ALIGN);
typedef struct uhci_qh uhci_qh_t;
/* Maximum number of isochronous TD's and QH's interrupt */
#define UHCI_VFRAMELIST_COUNT 128
#define UHCI_IFRAMELIST_COUNT (2 * UHCI_VFRAMELIST_COUNT)
#if (((UHCI_VFRAMELIST_COUNT & (UHCI_VFRAMELIST_COUNT-1)) != 0) || \
(UHCI_VFRAMELIST_COUNT > UHCI_FRAMELIST_COUNT))
#error "UHCI_VFRAMELIST_COUNT is not power of two"
#error "or UHCI_VFRAMELIST_COUNT > UHCI_FRAMELIST_COUNT"
#endif
#if (UHCI_VFRAMELIST_COUNT < USB_MAX_FS_ISOC_FRAMES_PER_XFER)
#error "maximum number of full-speed isochronous frames is higher than supported!"
#endif
struct uhci_config_desc {
struct usb_config_descriptor confd;
struct usb_interface_descriptor ifcd;
struct usb_endpoint_descriptor endpd;
} __packed;
union uhci_hub_desc {
struct usb_status stat;
struct usb_port_status ps;
uint8_t temp[128];
};
struct uhci_hw_softc {
struct usb_page_cache pframes_pc;
struct usb_page_cache isoc_start_pc[UHCI_VFRAMELIST_COUNT];
struct usb_page_cache intr_start_pc[UHCI_IFRAMELIST_COUNT];
struct usb_page_cache ls_ctl_start_pc;
struct usb_page_cache fs_ctl_start_pc;
struct usb_page_cache bulk_start_pc;
struct usb_page_cache last_qh_pc;
struct usb_page_cache last_td_pc;
struct usb_page pframes_pg;
struct usb_page isoc_start_pg[UHCI_VFRAMELIST_COUNT];
struct usb_page intr_start_pg[UHCI_IFRAMELIST_COUNT];
struct usb_page ls_ctl_start_pg;
struct usb_page fs_ctl_start_pg;
struct usb_page bulk_start_pg;
struct usb_page last_qh_pg;
struct usb_page last_td_pg;
};
typedef struct uhci_softc {
struct uhci_hw_softc sc_hw;
struct usb_bus sc_bus; /* base device */
union uhci_hub_desc sc_hub_desc;
struct usb_callout sc_root_intr;
struct usb_device *sc_devices[UHCI_MAX_DEVICES];
/* pointer to last TD for isochronous */
struct uhci_td *sc_isoc_p_last[UHCI_VFRAMELIST_COUNT];
/* pointer to last QH for interrupt */
struct uhci_qh *sc_intr_p_last[UHCI_IFRAMELIST_COUNT];
/* pointer to last QH for low speed control */
struct uhci_qh *sc_ls_ctl_p_last;
/* pointer to last QH for full speed control */
struct uhci_qh *sc_fs_ctl_p_last;
/* pointer to last QH for bulk */
struct uhci_qh *sc_bulk_p_last;
struct uhci_qh *sc_reclaim_qh_p;
struct uhci_qh *sc_last_qh_p;
struct uhci_td *sc_last_td_p;
struct resource *sc_io_res;
struct resource *sc_irq_res;
void *sc_intr_hdl;
device_t sc_dev;
bus_size_t sc_io_size;
bus_space_tag_t sc_io_tag;
bus_space_handle_t sc_io_hdl;
uint32_t sc_loops; /* number of QHs that wants looping */
uint16_t sc_intr_stat[UHCI_IFRAMELIST_COUNT];
uint8_t sc_addr; /* device address */
uint8_t sc_conf; /* device configuration */
uint8_t sc_isreset; /* bits set if a root hub is reset */
uint8_t sc_isresumed; /* bits set if a port was resumed */
uint8_t sc_hub_idata[1];
char sc_vendor[16]; /* vendor string for root hub */
} uhci_softc_t;
usb_bus_mem_cb_t uhci_iterate_hw_softc;
usb_error_t uhci_init(uhci_softc_t *sc);
void uhci_reset(uhci_softc_t *sc);
void uhci_interrupt(uhci_softc_t *sc);
#endif /* _UHCI_H_ */