250 lines
8.0 KiB
C
250 lines
8.0 KiB
C
/* $FreeBSD$ */
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/*-
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* Copyright (c) 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Lennart Augustsson (lennart@augustsson.net) at
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* Carlstedt Research & Technology.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _UHCI_H_
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#define _UHCI_H_
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#define UHCI_MAX_DEVICES MIN(USB_MAX_DEVICES, 128)
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#define UHCI_FRAMELIST_COUNT 1024 /* units */
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#define UHCI_FRAMELIST_ALIGN 4096 /* bytes */
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/* Structures alignment (bytes) */
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#define UHCI_TD_ALIGN 16
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#define UHCI_QH_ALIGN 16
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#if ((USB_PAGE_SIZE < UHCI_TD_ALIGN) || (UHCI_TD_ALIGN == 0) || \
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(USB_PAGE_SIZE < UHCI_QH_ALIGN) || (UHCI_QH_ALIGN == 0))
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#error "Invalid USB page size!"
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#endif
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typedef uint32_t uhci_physaddr_t;
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#define UHCI_PTR_T 0x00000001
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#define UHCI_PTR_TD 0x00000000
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#define UHCI_PTR_QH 0x00000002
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#define UHCI_PTR_VF 0x00000004
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/*
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* The Queue Heads (QH) and Transfer Descriptors (TD) are accessed by
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* both the CPU and the USB-controller which run concurrently. Great
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* care must be taken. When the data-structures are linked into the
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* USB controller's frame list, the USB-controller "owns" the
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* td_status and qh_elink fields, which will not be written by the
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* CPU.
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*
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*/
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struct uhci_td {
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/*
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* Data used by the UHCI controller.
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* volatile is used in order to mantain struct members ordering.
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*/
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volatile uint32_t td_next;
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volatile uint32_t td_status;
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#define UHCI_TD_GET_ACTLEN(s) (((s) + 1) & 0x3ff)
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#define UHCI_TD_ZERO_ACTLEN(t) ((t) | 0x3ff)
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#define UHCI_TD_BITSTUFF 0x00020000
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#define UHCI_TD_CRCTO 0x00040000
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#define UHCI_TD_NAK 0x00080000
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#define UHCI_TD_BABBLE 0x00100000
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#define UHCI_TD_DBUFFER 0x00200000
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#define UHCI_TD_STALLED 0x00400000
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#define UHCI_TD_ACTIVE 0x00800000
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#define UHCI_TD_IOC 0x01000000
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#define UHCI_TD_IOS 0x02000000
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#define UHCI_TD_LS 0x04000000
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#define UHCI_TD_GET_ERRCNT(s) (((s) >> 27) & 3)
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#define UHCI_TD_SET_ERRCNT(n) ((n) << 27)
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#define UHCI_TD_SPD 0x20000000
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volatile uint32_t td_token;
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#define UHCI_TD_PID 0x000000ff
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#define UHCI_TD_PID_IN 0x00000069
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#define UHCI_TD_PID_OUT 0x000000e1
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#define UHCI_TD_PID_SETUP 0x0000002d
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#define UHCI_TD_GET_PID(s) ((s) & 0xff)
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#define UHCI_TD_SET_DEVADDR(a) ((a) << 8)
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#define UHCI_TD_GET_DEVADDR(s) (((s) >> 8) & 0x7f)
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#define UHCI_TD_SET_ENDPT(e) (((e) & 0xf) << 15)
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#define UHCI_TD_GET_ENDPT(s) (((s) >> 15) & 0xf)
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#define UHCI_TD_SET_DT(t) ((t) << 19)
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#define UHCI_TD_GET_DT(s) (((s) >> 19) & 1)
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#define UHCI_TD_SET_MAXLEN(l) (((l)-1U) << 21)
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#define UHCI_TD_GET_MAXLEN(s) ((((s) >> 21) + 1) & 0x7ff)
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#define UHCI_TD_MAXLEN_MASK 0xffe00000
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volatile uint32_t td_buffer;
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/*
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* Extra information needed:
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*/
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struct uhci_td *next;
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struct uhci_td *prev;
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struct uhci_td *obj_next;
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struct usb_page_cache *page_cache;
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struct usb_page_cache *fix_pc;
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uint32_t td_self;
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uint16_t len;
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} __aligned(UHCI_TD_ALIGN);
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typedef struct uhci_td uhci_td_t;
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#define UHCI_TD_ERROR (UHCI_TD_BITSTUFF | UHCI_TD_CRCTO | \
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UHCI_TD_BABBLE | UHCI_TD_DBUFFER | UHCI_TD_STALLED)
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#define UHCI_TD_SETUP(len, endp, dev) (UHCI_TD_SET_MAXLEN(len) | \
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UHCI_TD_SET_ENDPT(endp) | \
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UHCI_TD_SET_DEVADDR(dev) | \
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UHCI_TD_PID_SETUP)
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#define UHCI_TD_OUT(len, endp, dev, dt) (UHCI_TD_SET_MAXLEN(len) | \
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UHCI_TD_SET_ENDPT(endp) | \
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UHCI_TD_SET_DEVADDR(dev) | \
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UHCI_TD_PID_OUT | UHCI_TD_SET_DT(dt))
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#define UHCI_TD_IN(len, endp, dev, dt) (UHCI_TD_SET_MAXLEN(len) | \
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UHCI_TD_SET_ENDPT(endp) | \
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UHCI_TD_SET_DEVADDR(dev) | \
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UHCI_TD_PID_IN | UHCI_TD_SET_DT(dt))
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struct uhci_qh {
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/*
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* Data used by the UHCI controller.
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*/
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volatile uint32_t qh_h_next;
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volatile uint32_t qh_e_next;
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/*
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* Extra information needed:
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*/
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struct uhci_qh *h_next;
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struct uhci_qh *h_prev;
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struct uhci_qh *obj_next;
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struct uhci_td *e_next;
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struct usb_page_cache *page_cache;
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uint32_t qh_self;
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uint16_t intr_pos;
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} __aligned(UHCI_QH_ALIGN);
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typedef struct uhci_qh uhci_qh_t;
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/* Maximum number of isochronous TD's and QH's interrupt */
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#define UHCI_VFRAMELIST_COUNT 128
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#define UHCI_IFRAMELIST_COUNT (2 * UHCI_VFRAMELIST_COUNT)
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#if (((UHCI_VFRAMELIST_COUNT & (UHCI_VFRAMELIST_COUNT-1)) != 0) || \
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(UHCI_VFRAMELIST_COUNT > UHCI_FRAMELIST_COUNT))
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#error "UHCI_VFRAMELIST_COUNT is not power of two"
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#error "or UHCI_VFRAMELIST_COUNT > UHCI_FRAMELIST_COUNT"
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#endif
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#if (UHCI_VFRAMELIST_COUNT < USB_MAX_FS_ISOC_FRAMES_PER_XFER)
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#error "maximum number of full-speed isochronous frames is higher than supported!"
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#endif
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struct uhci_config_desc {
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struct usb_config_descriptor confd;
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struct usb_interface_descriptor ifcd;
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struct usb_endpoint_descriptor endpd;
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} __packed;
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union uhci_hub_desc {
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struct usb_status stat;
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struct usb_port_status ps;
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uint8_t temp[128];
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};
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struct uhci_hw_softc {
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struct usb_page_cache pframes_pc;
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struct usb_page_cache isoc_start_pc[UHCI_VFRAMELIST_COUNT];
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struct usb_page_cache intr_start_pc[UHCI_IFRAMELIST_COUNT];
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struct usb_page_cache ls_ctl_start_pc;
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struct usb_page_cache fs_ctl_start_pc;
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struct usb_page_cache bulk_start_pc;
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struct usb_page_cache last_qh_pc;
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struct usb_page_cache last_td_pc;
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struct usb_page pframes_pg;
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struct usb_page isoc_start_pg[UHCI_VFRAMELIST_COUNT];
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struct usb_page intr_start_pg[UHCI_IFRAMELIST_COUNT];
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struct usb_page ls_ctl_start_pg;
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struct usb_page fs_ctl_start_pg;
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struct usb_page bulk_start_pg;
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struct usb_page last_qh_pg;
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struct usb_page last_td_pg;
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};
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typedef struct uhci_softc {
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struct uhci_hw_softc sc_hw;
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struct usb_bus sc_bus; /* base device */
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union uhci_hub_desc sc_hub_desc;
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struct usb_callout sc_root_intr;
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struct usb_device *sc_devices[UHCI_MAX_DEVICES];
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/* pointer to last TD for isochronous */
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struct uhci_td *sc_isoc_p_last[UHCI_VFRAMELIST_COUNT];
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/* pointer to last QH for interrupt */
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struct uhci_qh *sc_intr_p_last[UHCI_IFRAMELIST_COUNT];
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/* pointer to last QH for low speed control */
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struct uhci_qh *sc_ls_ctl_p_last;
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/* pointer to last QH for full speed control */
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struct uhci_qh *sc_fs_ctl_p_last;
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/* pointer to last QH for bulk */
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struct uhci_qh *sc_bulk_p_last;
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struct uhci_qh *sc_reclaim_qh_p;
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struct uhci_qh *sc_last_qh_p;
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struct uhci_td *sc_last_td_p;
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struct resource *sc_io_res;
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struct resource *sc_irq_res;
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void *sc_intr_hdl;
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device_t sc_dev;
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bus_size_t sc_io_size;
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bus_space_tag_t sc_io_tag;
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bus_space_handle_t sc_io_hdl;
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uint32_t sc_loops; /* number of QHs that wants looping */
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uint16_t sc_intr_stat[UHCI_IFRAMELIST_COUNT];
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uint8_t sc_addr; /* device address */
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uint8_t sc_conf; /* device configuration */
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uint8_t sc_isreset; /* bits set if a root hub is reset */
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uint8_t sc_isresumed; /* bits set if a port was resumed */
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uint8_t sc_hub_idata[1];
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char sc_vendor[16]; /* vendor string for root hub */
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} uhci_softc_t;
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usb_bus_mem_cb_t uhci_iterate_hw_softc;
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usb_error_t uhci_init(uhci_softc_t *sc);
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void uhci_reset(uhci_softc_t *sc);
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void uhci_interrupt(uhci_softc_t *sc);
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#endif /* _UHCI_H_ */
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