239 lines
8.1 KiB
C
239 lines
8.1 KiB
C
/* $NetBSD: iopvar.h,v 1.4 2001/01/03 21:04:01 ad Exp $ */
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/*-
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* Copyright (c) 2000 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 Andrew Doran.
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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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 _I2O_IOPVAR_H_
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#define _I2O_IOPVAR_H_
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/* Per-IOP statistics; not particularly useful at the moment. */
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struct iop_stat {
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int is_cur_swqueue;
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int is_peak_swqueue;
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int is_cur_hwqueue;
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int is_peak_hwqueue;
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int64_t is_requests;
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int64_t is_bytes;
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};
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/*
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* XXX The following should be adjusted if and when:
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*
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* o MAXPHYS exceeds 64kB.
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* o A new message or reply is defined in i2o.h.
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*
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* As it stands, these make for a message frame of 200 bytes.
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*/
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#define IOP_MAX_SGL_SIZE 132 /* Maximum S/G list size */
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#define IOP_MAX_BASE_MSG_SIZE 68 /* Maximum base message size */
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#define IOP_MAX_XFER 65536 /* Maximum transfer size */
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#define IOP_MAX_MSG_XFERS 3 /* Maximum transfer count per msg */
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#define IOP_MAX_SGL_ENTRIES (IOP_MAX_SGL_SIZE / 8)
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#define IOP_MAX_MSG_SIZE (IOP_MAX_BASE_MSG_SIZE + IOP_MAX_SGL_SIZE)
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/* Linux sez that some IOPs don't like reply frame sizes other than 128. */
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#define IOP_MAX_REPLY_SIZE 128
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#define IOP_MAX_HW_QUEUECNT 256
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#define IOP_MAX_HW_REPLYCNT 256
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struct iop_tidmap {
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u_short it_tid;
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u_short it_flags;
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char it_dvname[sizeof(((struct device *)NULL)->dv_xname)];
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};
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#define IT_CONFIGURED 0x02 /* target configured */
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#ifdef _KERNEL
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#include "locators.h"
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/*
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* Transfer descriptor.
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*/
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struct iop_xfer {
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bus_dmamap_t ix_map;
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u_int ix_size;
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u_int ix_flags;
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};
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#define IX_IN 0x0001 /* Data transfer from IOP */
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#define IX_OUT 0x0002 /* Data transfer to IOP */
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/*
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* Message wrapper.
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*/
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struct iop_msg {
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SIMPLEQ_ENTRY(iop_msg) im_queue; /* Next queued message */
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TAILQ_ENTRY(iop_msg) im_hash; /* Hash chain */
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u_int im_flags; /* Control flags */
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u_int im_tctx; /* Transaction context */
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void *im_dvcontext; /* Un*x device context */
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u_int32_t im_msg[IOP_MAX_MSG_SIZE / sizeof(u_int32_t)];
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struct iop_xfer im_xfer[IOP_MAX_MSG_XFERS];
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};
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#define IM_SYSMASK 0x00ff
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#define IM_REPLIED 0x0001 /* Message has been replied to */
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#define IM_ALLOCED 0x0002 /* This message wrapper is allocated */
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#define IM_SGLOFFADJ 0x0008 /* S/G list offset adjusted */
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#define IM_DISCARD 0x0010 /* Discard message wrapper once sent */
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#define IM_WAITING 0x0020 /* Waiting for completion */
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#define IM_USERMASK 0xff00
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#define IM_NOWAIT 0x0100 /* Don't sleep when processing */
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#define IM_NOICTX 0x0200 /* No initiator context field */
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#define IM_NOINTR 0x0400 /* Don't interrupt when complete */
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#define IM_NOSTATUS 0x0800 /* Don't check status if waiting */
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struct iop_initiator {
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LIST_ENTRY(iop_initiator) ii_list;
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LIST_ENTRY(iop_initiator) ii_hash;
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void (*ii_intr)(struct device *, struct iop_msg *, void *);
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int (*ii_reconfig)(struct device *);
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struct device *ii_dv;
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int ii_flags;
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int ii_ictx; /* Initiator context */
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int ii_stctx; /* Static transaction context */
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int ii_tid;
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};
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#define II_DISCARD 0x0001 /* Don't track state; discard msg wrappers */
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#define II_CONFIGURED 0x0002 /* Already configured */
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#define II_UTILITY 0x0004 /* Utility initiator (not a `real device') */
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#define IOP_ICTX 0
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/*
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* Per-IOP context.
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*/
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struct iop_softc {
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struct device sc_dv; /* generic device data */
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bus_space_handle_t sc_ioh; /* bus space handle */
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bus_space_tag_t sc_iot; /* bus space tag */
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bus_dma_tag_t sc_dmat; /* bus DMA tag */
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void *sc_ih; /* interrupt handler cookie */
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struct lock sc_conflock; /* autoconfiguration lock */
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bus_addr_t sc_memaddr; /* register window address */
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bus_size_t sc_memsize; /* register window size */
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struct i2o_hrt *sc_hrt; /* hardware resource table */
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struct i2o_lct *sc_lct; /* logical configuration table */
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int sc_nlctent; /* number of LCT entries */
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struct iop_tidmap *sc_tidmap; /* tid map (per-lct-entry flags) */
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struct i2o_status sc_status; /* status */
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struct iop_stat sc_stat; /* counters */
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int sc_flags; /* IOP-wide flags */
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int sc_maxreplycnt; /* reply queue size */
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u_int32_t sc_chgindicator;/* autoconfig vs. LCT change ind. */
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LIST_HEAD(, iop_initiator) sc_iilist;/* initiator list */
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SIMPLEQ_HEAD(,iop_msg) sc_queue;/* software queue */
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int sc_maxqueuecnt; /* maximum # of msgs on h/w queue */
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struct iop_initiator sc_eventii;/* IOP event handler */
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struct proc *sc_reconf_proc;/* reconfiguration process */
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caddr_t sc_ptb;
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/*
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* Reply queue.
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*/
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bus_dmamap_t sc_rep_dmamap;
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int sc_rep_size;
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bus_addr_t sc_rep_phys;
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caddr_t sc_rep;
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};
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#define IOP_OPEN 0x01 /* Device interface open */
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#define IOP_HAVESTATUS 0x02 /* Successfully retrieved status */
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#define IOP_ONLINE 0x04 /* Can use ioctl interface */
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struct iop_attach_args {
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int ia_class; /* device class */
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int ia_tid; /* target ID */
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};
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#define iopcf_tid cf_loc[IOPCF_TID] /* TID */
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void iop_init(struct iop_softc *, const char *);
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int iop_intr(void *);
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int iop_lct_get(struct iop_softc *);
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int iop_param_op(struct iop_softc *, int, int, int, void *, int);
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int iop_simple_cmd(struct iop_softc *, int, int, int, int, int);
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void iop_strvis(struct iop_softc *, const char *, int, char *, int);
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int iop_initiator_register(struct iop_softc *, struct iop_initiator *);
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void iop_initiator_unregister(struct iop_softc *, struct iop_initiator *);
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int iop_msg_alloc(struct iop_softc *, struct iop_initiator *,
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struct iop_msg **, int);
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int iop_msg_enqueue(struct iop_softc *, struct iop_msg *, int);
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void iop_msg_free(struct iop_softc *, struct iop_initiator *,
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struct iop_msg *);
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int iop_msg_map(struct iop_softc *, struct iop_msg *, void *, int, int);
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int iop_msg_send(struct iop_softc *, struct iop_msg *, int);
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void iop_msg_unmap(struct iop_softc *, struct iop_msg *);
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int iop_util_abort(struct iop_softc *, struct iop_initiator *, int, int,
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int);
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int iop_util_claim(struct iop_softc *, struct iop_initiator *, int, int);
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int iop_util_eventreg(struct iop_softc *, struct iop_initiator *, int);
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#endif /* _KERNEL */
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/*
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* ioctl() interface.
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*/
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struct ioppt_buf {
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void *ptb_data;
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size_t ptb_datalen;
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int ptb_out;
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};
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struct ioppt {
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void *pt_msg;
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size_t pt_msglen;
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void *pt_reply;
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size_t pt_replylen;
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int pt_timo;
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int pt_nbufs;
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struct ioppt_buf pt_bufs[IOP_MAX_MSG_XFERS];
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};
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#define IOPIOCPT _IOWR('u', 0, struct ioppt)
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#define IOPIOCGLCT _IOWR('u', 1, struct iovec)
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#define IOPIOCGSTATUS _IOWR('u', 2, struct iovec)
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#define IOPIOCRECONFIG _IO('u', 3)
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#define IOPIOCGTIDMAP _IOWR('u', 4, struct iovec)
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#endif /* !_I2O_IOPVAR_H_ */
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