/* $OpenBSD: aic6250var.h,v 1.2 2013/10/23 10:07:14 miod Exp $ */ /* * Copyright (c) 2010, 2013 Miodrag Vallat. * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ /* * Derived from sys/dev/ic/aic6360var.h under the following licence terms: */ /* OpenBSD: aic6360var.h,v 1.8 2011/04/06 18:14:35 miod Exp */ /* $NetBSD: aic6360.c,v 1.52 1996/12/10 21:27:51 thorpej Exp $ */ /* * Copyright (c) 1994, 1995, 1996 Charles Hannum. All rights reserved. * * 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 Charles M. Hannum. * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * Copyright (c) 1994 Jarle Greipsland * All rights reserved. * * 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. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. */ /* * Acknowledgements: Many of the algorithms used in this driver are * inspired by the work of Julian Elischer (julian@tfs.com) and * Charles Hannum (mycroft@duality.gnu.ai.mit.edu). Thanks a million! */ /* * ACB. Holds additional information for each SCSI command Comments: We * need a separate scsi command block because we may need to overwrite it * with a request sense command. Basicly, we refrain from fiddling with * the scsi_xfer struct (except do the expected updating of return values). * We'll generally update: xs->{flags,resid,error,sense,status} and * occasionally xs->retries. */ struct aic6250_acb { struct scsi_generic scsi_cmd; int scsi_cmd_length; void *data_addr; /* Saved data pointer */ int data_length; /* Residue */ uint8_t target_stat; /* SCSI status byte */ TAILQ_ENTRY(aic6250_acb) chain; struct scsi_xfer *xs; /* SCSI xfer ctrl block from above */ int flags; #define ACB_ALLOC 0x01 #define ACB_NEXUS 0x02 #define ACB_SENSE 0x04 #define ACB_ABORT 0x40 #define ACB_RESET 0x80 int timeout; }; /* * Some info about each (possible) target on the SCSI bus. This should * probably have been a "per target+lunit" structure, but we'll leave it at * this for now. */ struct aic6250_tinfo { int cmds; /* #commands processed */ int dconns; /* #disconnects */ int touts; /* #timeouts */ int perrs; /* #parity errors */ int senses; /* #request sense commands sent */ ushort lubusy; /* What local units/subr. are busy? */ uint8_t flags; #define DO_SYNC 0x01 /* (Re)Negotiate synchronous options */ #define DO_WIDE 0x02 /* (Re)Negotiate wide options */ uint8_t period; /* Period suggestion */ uint8_t offset; /* Offset suggestion */ uint8_t width; /* Width suggestion */ }; struct aic6250_softc { struct device sc_dev; uint8_t (*sc_read)(struct aic6250_softc *, uint); void (*sc_write)(struct aic6250_softc *, uint, uint8_t); struct scsi_link sc_link; /* prototype for subdevs */ TAILQ_HEAD(, aic6250_acb) free_list, ready_list, nexus_list; struct aic6250_acb *sc_nexus; /* current command */ struct aic6250_acb sc_acb[8]; struct aic6250_tinfo sc_tinfo[8]; struct mutex sc_acb_mtx; struct scsi_iopool sc_iopool; /* Data about the current nexus (updated for every cmd switch) */ u_char *sc_dp; /* Current data pointer */ size_t sc_dleft; /* Data bytes left to transfer */ u_char *sc_cp; /* Current command pointer */ size_t sc_cleft; /* Command bytes left to transfer */ /* Adapter state */ uint8_t sc_phase; /* Current bus phase */ uint8_t sc_prevphase; /* Previous bus phase */ uint8_t sc_state; /* State applicable to the adapter */ #define AIC_INIT 0 #define AIC_IDLE 1 #define AIC_SELECTING 2 /* SCSI command is arbiting */ #define AIC_RESELECTED 3 /* Has been reselected */ #define AIC_CONNECTED 4 /* Actively using the SCSI bus */ #define AIC_DISCONNECT 5 /* MSG_DISCONNECT received */ #define AIC_CMDCOMPLETE 6 /* MSG_CMDCOMPLETE received */ #define AIC_CLEANING 7 uint8_t sc_flags; #define AIC_DROP_MSGIN 0x01 /* Discard all msgs (parity err detected) */ #define AIC_ABORTING 0x02 /* Bailing out */ #define AIC_DOINGDMA 0x04 /* The FIFO data path is active! */ uint8_t sc_selid; /* Reselection ID */ uint8_t sc_imr0; uint8_t sc_imr1; uint8_t sc_cr0; uint8_t sc_cr1; struct timeout sc_seltimeout; uint sc_selto; /* Selection timeout (when polling) */ /* Message stuff */ uint8_t sc_msgpriq; /* Messages we want to send */ uint8_t sc_msgoutq; /* Messages sent during last MESSAGE OUT */ uint8_t sc_lastmsg; /* Message last transmitted */ uint8_t sc_currmsg; /* Message currently ready to transmit */ #define SEND_DEV_RESET 0x01 #define SEND_PARITY_ERROR 0x02 #define SEND_INIT_DET_ERR 0x04 #define SEND_REJECT 0x08 #define SEND_IDENTIFY 0x10 #define SEND_ABORT 0x20 #define SEND_SDTR 0x40 #define SEND_WDTR 0x80 #define AIC_MAX_MSG_LEN 8 uint8_t sc_omess[AIC_MAX_MSG_LEN]; uint8_t *sc_omp; /* Outgoing message pointer */ uint8_t sc_imess[AIC_MAX_MSG_LEN]; uint8_t *sc_imp; /* Incoming message pointer */ /* Hardware stuff */ int sc_initiator; /* Our scsi id */ int sc_freq; /* Clock frequency in MHz */ int sc_minsync; /* Minimum sync period / 4 */ int sc_maxsync; /* Maximum sync period / 4 */ /* DMA function set from MD code */ int (*sc_dma_start)(struct aic6250_softc *, void *, size_t, int); int (*sc_dma_done)(struct aic6250_softc *); }; #if AIC_DEBUG #define AIC_SHOWACBS 0x01 #define AIC_SHOWINTS 0x02 #define AIC_SHOWCMDS 0x04 #define AIC_SHOWMISC 0x08 #define AIC_SHOWTRACE 0x10 #define AIC_SHOWSTART 0x20 #define AIC_DOBREAK 0x40 #define AIC_PRINT(b, s) do {if ((aic6250_debug & (b)) != 0) printf s;} while (0) #define AIC_BREAK() \ do { if ((aic6250_debug & AIC_DOBREAK) != 0) Debugger(); } while (0) #define AIC_ASSERT(x) \ do { \ if (!(x)) { \ printf("%s at line %d: assertion failed\n", \ sc->sc_dev.dv_xname, __LINE__); \ Debugger(); \ } \ } while (0) #else #define AIC_PRINT(b, s) #define AIC_BREAK() #define AIC_ASSERT(x) #endif #define AIC_ACBS(s) AIC_PRINT(AIC_SHOWACBS, s) #define AIC_INTS(s) AIC_PRINT(AIC_SHOWINTS, s) #define AIC_CMDS(s) AIC_PRINT(AIC_SHOWCMDS, s) #define AIC_MISC(s) AIC_PRINT(AIC_SHOWMISC, s) #define AIC_TRACE(s) AIC_PRINT(AIC_SHOWTRACE, s) #define AIC_START(s) AIC_PRINT(AIC_SHOWSTART, s) void aic6250_attach(struct aic6250_softc *); int aic6250_intr(void *);