214 lines
7.1 KiB
C
214 lines
7.1 KiB
C
/* $NetBSD: iopvar.h,v 1.1 2000/11/08 19:45:31 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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#ifdef _KERNEL
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#include "locators.h"
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/* XXX. Tunables. */
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#define IOP_MAX_INITIATORS 32
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#define IOP_MAX_PI_QUEUECNT 128
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#define IOP_MAX_HW_QUEUECNT 256
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#define IOP_MAX_HW_REPLYCNT 128
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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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/*
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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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u_int im_tid; /* TID we're addressing */
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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_WAITING 0x0004 /* Somebody is waiting for reply */
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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_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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struct iop_initiator {
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struct device *ii_dv;
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void (*ii_intr)(struct device *, struct iop_msg *, void *);
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int ii_flags;
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int ii_ictx;
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};
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#define II_DISCARD 0x0001 /* Don't track state; discard msg wrappers */
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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 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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u_int8_t *sc_lctmap; /* lct map (per-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 count queue */
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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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/*
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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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* Initiator table.
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*/
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struct iop_initiator *sc_itab[IOP_MAX_INITIATORS];
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/*
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* The following are used only when posting the system table to
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* the IOP. They describe PCI memory and I/O port regions.
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*/
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bus_addr_t sc_memaddr;
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int sc_memsize;
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int sc_ioaddr;
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int sc_iosize;
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};
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#define IOP_OPEN 0x01 /* Device interface open */
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#define IOP_LCTLKHELD 0x02 /* sc_lct lock held */
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#define IOP_LCTLKWANTED 0x04 /* sc_lct lock wanted */
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#define IOP_DRAIN 0x08 /* Draining IOP */
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#define IOP_LCTMAP_INUSE 0x01 /* target is in use */
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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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int iop_init(struct iop_softc *, const char *);
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int iop_intr(void *);
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int iop_params_get(struct iop_softc *, int, int, void *, int);
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int iop_simple_cmd(struct iop_softc *, int, int, int);
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void iop_strvis(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_lct_get(struct iop_softc *);
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int iop_lct_lock(struct iop_softc *);
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void iop_lct_unlock(struct iop_softc *);
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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 *);
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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_msg_wait(struct iop_softc *, struct iop_msg *, int);
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int iop_tid_claim(struct iop_softc *, int, int, int);
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int iop_tid_inuse(struct iop_softc *, int);
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int iop_tid_lct_index(struct iop_softc *, int);
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void iop_tid_markallused(struct iop_softc *, int);
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#endif /* _KERNEL */
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#endif /* !_I2O_IOPVAR_H_ */
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