/* $NetBSD: iopvar.h,v 1.1 2000/11/08 19:45:31 ad Exp $ */ /*- * Copyright (c) 2000 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Andrew Doran. * * 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * 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 _I2O_IOPVAR_H_ #define _I2O_IOPVAR_H_ /* Per-IOP statistics; not particularly useful at the moment. */ struct iop_stat { int is_cur_swqueue; int is_peak_swqueue; int is_cur_hwqueue; int is_peak_hwqueue; int64_t is_requests; int64_t is_bytes; }; #ifdef _KERNEL #include "locators.h" /* XXX. Tunables. */ #define IOP_MAX_INITIATORS 32 #define IOP_MAX_PI_QUEUECNT 128 #define IOP_MAX_HW_QUEUECNT 256 #define IOP_MAX_HW_REPLYCNT 128 /* * XXX The following should be adjusted if and when: * * o MAXPHYS exceeds 64kB. * o A new message or reply is defined in i2o.h. * * As it stands, these make for a message frame of 200 bytes. */ #define IOP_MAX_SGL_SIZE 132 /* Maximum S/G list size */ #define IOP_MAX_BASE_MSG_SIZE 68 /* Maximum base message size */ #define IOP_MAX_XFER 65536 /* Maximum transfer size */ #define IOP_MAX_MSG_XFERS 3 /* Maximum transfer count per msg */ #define IOP_MAX_SGL_ENTRIES (IOP_MAX_SGL_SIZE / 8) #define IOP_MAX_MSG_SIZE (IOP_MAX_BASE_MSG_SIZE + IOP_MAX_SGL_SIZE) /* * Transfer descriptor. */ struct iop_xfer { bus_dmamap_t ix_map; u_int ix_size; u_int ix_flags; }; #define IX_IN 0x0001 /* Data transfer from IOP */ #define IX_OUT 0x0002 /* Data transfer to IOP */ /* * Message wrapper. */ struct iop_msg { SIMPLEQ_ENTRY(iop_msg) im_queue; /* Next queued message */ TAILQ_ENTRY(iop_msg) im_hash; /* Hash chain */ u_int im_flags; /* Control flags */ u_int im_tctx; /* Transaction context */ u_int im_tid; /* TID we're addressing */ void *im_dvcontext; /* Un*x device context */ u_int32_t im_msg[IOP_MAX_MSG_SIZE / sizeof(u_int32_t)]; struct iop_xfer im_xfer[IOP_MAX_MSG_XFERS]; }; #define IM_SYSMASK 0x00ff #define IM_REPLIED 0x0001 /* Message has been replied to */ #define IM_ALLOCED 0x0002 /* This message wrapper is allocated */ #define IM_WAITING 0x0004 /* Somebody is waiting for reply */ #define IM_SGLOFFADJ 0x0008 /* S/G list offset adjusted */ #define IM_DISCARD 0x0010 /* Discard message wrapper once sent */ #define IM_USERMASK 0xff00 #define IM_NOWAIT 0x0100 /* Don't sleep when processing */ #define IM_NOICTX 0x0200 /* No initiator context field */ #define IM_NOINTR 0x0400 /* Don't interrupt when complete */ struct iop_initiator { struct device *ii_dv; void (*ii_intr)(struct device *, struct iop_msg *, void *); int ii_flags; int ii_ictx; }; #define II_DISCARD 0x0001 /* Don't track state; discard msg wrappers */ #define IOP_ICTX 0 /* * Per-IOP context. */ struct iop_softc { struct device sc_dv; /* generic device data */ bus_space_handle_t sc_ioh; /* bus space handle */ bus_space_tag_t sc_iot; /* bus space tag */ bus_dma_tag_t sc_dmat; /* bus DMA tag */ void *sc_ih; /* interrupt handler cookie */ struct i2o_hrt *sc_hrt; /* hardware resource table */ struct i2o_lct *sc_lct; /* logical configuration table */ int sc_nlctent; /* number of LCT entries */ u_int8_t *sc_lctmap; /* lct map (per-entry flags) */ struct i2o_status sc_status; /* status */ struct iop_stat sc_stat; /* counters */ int sc_flags; /* IOP-wide flags */ int sc_maxreplycnt; /* reply count queue */ SIMPLEQ_HEAD(,iop_msg) sc_queue;/* software queue */ int sc_maxqueuecnt; /* maximum # of msgs on h/w queue */ /* * Reply queue. */ bus_dmamap_t sc_rep_dmamap; int sc_rep_size; bus_addr_t sc_rep_phys; caddr_t sc_rep; /* * Initiator table. */ struct iop_initiator *sc_itab[IOP_MAX_INITIATORS]; /* * The following are used only when posting the system table to * the IOP. They describe PCI memory and I/O port regions. */ bus_addr_t sc_memaddr; int sc_memsize; int sc_ioaddr; int sc_iosize; }; #define IOP_OPEN 0x01 /* Device interface open */ #define IOP_LCTLKHELD 0x02 /* sc_lct lock held */ #define IOP_LCTLKWANTED 0x04 /* sc_lct lock wanted */ #define IOP_DRAIN 0x08 /* Draining IOP */ #define IOP_LCTMAP_INUSE 0x01 /* target is in use */ struct iop_attach_args { int ia_class; /* device class */ int ia_tid; /* target ID */ }; #define iopcf_tid cf_loc[IOPCF_TID] /* TID */ int iop_init(struct iop_softc *, const char *); int iop_intr(void *); int iop_params_get(struct iop_softc *, int, int, void *, int); int iop_simple_cmd(struct iop_softc *, int, int, int); void iop_strvis(const char *, int, char *, int); int iop_initiator_register(struct iop_softc *, struct iop_initiator *); void iop_initiator_unregister(struct iop_softc *, struct iop_initiator *); int iop_lct_get(struct iop_softc *); int iop_lct_lock(struct iop_softc *); void iop_lct_unlock(struct iop_softc *); int iop_msg_alloc(struct iop_softc *, struct iop_initiator *, struct iop_msg **, int); int iop_msg_enqueue(struct iop_softc *, struct iop_msg *); void iop_msg_free(struct iop_softc *, struct iop_initiator *, struct iop_msg *); int iop_msg_map(struct iop_softc *, struct iop_msg *, void *, int, int); int iop_msg_send(struct iop_softc *, struct iop_msg *, int); void iop_msg_unmap(struct iop_softc *, struct iop_msg *); int iop_msg_wait(struct iop_softc *, struct iop_msg *, int); int iop_tid_claim(struct iop_softc *, int, int, int); int iop_tid_inuse(struct iop_softc *, int); int iop_tid_lct_index(struct iop_softc *, int); void iop_tid_markallused(struct iop_softc *, int); #endif /* _KERNEL */ #endif /* !_I2O_IOPVAR_H_ */