197 lines
6.7 KiB
C
197 lines
6.7 KiB
C
/* $NetBSD: uhcivar.h,v 1.52 2013/01/29 00:00:15 christos Exp $ */
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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 _UHCIVAR_H_
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#define _UHCIVAR_H_
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#include <sys/pool.h>
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/*
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* To avoid having 1024 TDs for each isochronous transfer we introduce
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* a virtual frame list. Every UHCI_VFRAMELIST_COUNT entries in the real
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* frame list points to a non-active TD. These, in turn, form the
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* starts of the virtual frame list. This also has the advantage that it
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* simplifies linking in/out of TDs/QHs in the schedule.
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* Furthermore, initially each of the inactive TDs point to an inactive
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* QH that forms the start of the interrupt traffic for that slot.
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* Each of these QHs point to the same QH that is the start of control
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* traffic. This QH points at another QH which is the start of the
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* bulk traffic.
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*
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* UHCI_VFRAMELIST_COUNT should be a power of 2 and <= UHCI_FRAMELIST_COUNT.
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*/
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#define UHCI_VFRAMELIST_COUNT 128
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typedef struct uhci_soft_qh uhci_soft_qh_t;
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typedef struct uhci_soft_td uhci_soft_td_t;
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typedef union {
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struct uhci_soft_qh *sqh;
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struct uhci_soft_td *std;
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} uhci_soft_td_qh_t;
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/*
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* An interrupt info struct contains the information needed to
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* execute a requested routine when the controller generates an
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* interrupt. Since we cannot know which transfer generated
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* the interrupt all structs are linked together so they can be
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* searched at interrupt time.
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*/
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typedef struct uhci_intr_info {
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struct uhci_softc *sc;
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usbd_xfer_handle xfer;
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uhci_soft_td_t *stdstart;
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uhci_soft_td_t *stdend;
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LIST_ENTRY(uhci_intr_info) list;
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int isdone; /* used only when DIAGNOSTIC is defined */
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} uhci_intr_info_t;
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struct uhci_xfer {
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struct usbd_xfer xfer;
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uhci_intr_info_t iinfo;
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struct usb_task abort_task;
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int curframe;
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};
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#define UXFER(xfer) ((struct uhci_xfer *)(xfer))
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/*
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* Extra information that we need for a TD.
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*/
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struct uhci_soft_td {
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uhci_td_t td; /* The real TD, must be first */
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uhci_soft_td_qh_t link; /* soft version of the td_link field */
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uhci_physaddr_t physaddr; /* TD's physical address. */
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usb_dma_t dma; /* TD's DMA infos */
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int offs; /* TD's offset in usb_dma_t */
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};
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/*
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* Make the size such that it is a multiple of UHCI_TD_ALIGN. This way
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* we can pack a number of soft TD together and have the real TD well
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* aligned.
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* NOTE: Minimum size is 32 bytes.
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*/
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#define UHCI_STD_SIZE ((sizeof (struct uhci_soft_td) + UHCI_TD_ALIGN - 1) / UHCI_TD_ALIGN * UHCI_TD_ALIGN)
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#define UHCI_STD_CHUNK 128 /*(PAGE_SIZE / UHCI_TD_SIZE)*/
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/*
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* Extra information that we need for a QH.
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*/
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struct uhci_soft_qh {
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uhci_qh_t qh; /* The real QH, must be first */
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uhci_soft_qh_t *hlink; /* soft version of qh_hlink */
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uhci_soft_td_t *elink; /* soft version of qh_elink */
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uhci_physaddr_t physaddr; /* QH's physical address. */
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int pos; /* Timeslot position */
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usb_dma_t dma; /* QH's DMA infos */
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int offs; /* QH's offset in usb_dma_t */
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};
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/* See comment about UHCI_STD_SIZE. */
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#define UHCI_SQH_SIZE ((sizeof (struct uhci_soft_qh) + UHCI_QH_ALIGN - 1) / UHCI_QH_ALIGN * UHCI_QH_ALIGN)
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#define UHCI_SQH_CHUNK 128 /*(PAGE_SIZE / UHCI_QH_SIZE)*/
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/*
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* Information about an entry in the virtual frame list.
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*/
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struct uhci_vframe {
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uhci_soft_td_t *htd; /* pointer to dummy TD */
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uhci_soft_td_t *etd; /* pointer to last TD */
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uhci_soft_qh_t *hqh; /* pointer to dummy QH */
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uhci_soft_qh_t *eqh; /* pointer to last QH */
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u_int bandwidth; /* max bandwidth used by this frame */
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};
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typedef struct uhci_softc {
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device_t sc_dev;
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struct usbd_bus sc_bus;
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bus_space_tag_t iot;
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bus_space_handle_t ioh;
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bus_size_t sc_size;
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kmutex_t sc_lock;
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kmutex_t sc_intr_lock;
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kcondvar_t sc_softwake_cv;
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uhci_physaddr_t *sc_pframes;
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usb_dma_t sc_dma;
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struct uhci_vframe sc_vframes[UHCI_VFRAMELIST_COUNT];
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uhci_soft_qh_t *sc_lctl_start; /* dummy QH for low speed control */
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uhci_soft_qh_t *sc_lctl_end; /* last control QH */
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uhci_soft_qh_t *sc_hctl_start; /* dummy QH for high speed control */
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uhci_soft_qh_t *sc_hctl_end; /* last control QH */
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uhci_soft_qh_t *sc_bulk_start; /* dummy QH for bulk */
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uhci_soft_qh_t *sc_bulk_end; /* last bulk transfer */
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uhci_soft_qh_t *sc_last_qh; /* dummy QH at the end */
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u_int32_t sc_loops; /* number of QHs that wants looping */
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uhci_soft_td_t *sc_freetds; /* TD free list */
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uhci_soft_qh_t *sc_freeqhs; /* QH free list */
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pool_cache_t sc_xferpool; /* free xfer pool */
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u_int8_t sc_addr; /* device address */
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u_int8_t sc_conf; /* device configuration */
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u_int8_t sc_saved_sof;
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u_int16_t sc_saved_frnum;
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char sc_softwake;
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char sc_isreset;
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char sc_suspend;
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char sc_dying;
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LIST_HEAD(, uhci_intr_info) sc_intrhead;
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/* Info for the root hub interrupt "pipe". */
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int sc_ival; /* time between root hub intrs */
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usbd_xfer_handle sc_intr_xfer; /* root hub interrupt transfer */
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struct callout sc_poll_handle;
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char sc_vendor[32]; /* vendor string for root hub */
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int sc_id_vendor; /* vendor ID for root hub */
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device_t sc_child; /* /dev/usb# device */
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struct usb_dma_reserve sc_dma_reserve;
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} uhci_softc_t;
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usbd_status uhci_init(uhci_softc_t *);
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int uhci_intr(void *);
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int uhci_detach(uhci_softc_t *, int);
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void uhci_childdet(device_t, device_t);
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int uhci_activate(device_t, enum devact);
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bool uhci_resume(device_t, const pmf_qual_t *);
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bool uhci_suspend(device_t, const pmf_qual_t *);
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#endif /* _UHCIVAR_H_ */
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