/* $NetBSD: espvar.h,v 1.3 1994/11/20 20:52:12 deraadt Exp $ */ /* * Copyright (c) 1995 Theo de Raadt * * 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 under OpenBSD by * Theo de Raadt. * 4. 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. * * Copyright (c) 1994 Peter Galbavy. 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 Peter Galbavy. * 4. 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. */ /* esp chip revisions */ #define ESP100 0 #define ESP100A 1 #define ESP200 2 /* Grabbed from Julians SCSI aha-drivers */ #ifdef DDB int Debugger(); #else DDB #define Debugger() panic("should call debugger here (esp.c)") #endif DDB #define ESP_MSGLEN_MAX 8 /* maximum msglen we handle */ #define ESP_SYNC_REQOFF 0 /* offset we request */ #define ESP_SYNC_MAXOFF 15 /* maximum supportable sync offset */ #if ESP_SYNC_REQOFF > ESP_SYNC_MAXOFF #warning requested sync offset is higher than maximum possible sync offset. #endif #define FREQTOCCF(freq) (((freq + 4) / 5)) /* * ECB. 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. Basically, 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 ecb { TAILQ_ENTRY(ecb) chain; struct scsi_xfer *xs; /* SCSI xfer ctrl block from above */ int flags; /* Status */ #define ECB_FREE 0x00 #define ECB_ACTIVE 0x01 #define ECB_DONE 0x04 #define ECB_CHKSENSE 0x08 struct scsi_generic cmd; /* SCSI command block */ int clen; caddr_t daddr; /* Saved data pointer */ int dleft; /* Residue */ int stat; /* SCSI status byte */ }; /* * 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. Is there a way to reliably hook it up to sc->fordriver?? */ struct esp_tinfo { int cmds; /* #commands processed */ int dconns; /* #disconnects */ int touts; /* #timeouts */ int perrs; /* #parity errors */ int senses; /* #request sense commands sent */ u_char lubusy; /* What luns are busy? */ u_char flags; #define DO_NEGOTIATE 0x01 /* (re)negotiate synchronous options */ #define TARGET_BUSY 0x02 /* target is busy, i.e. cmd in progress */ u_char period; /* sync period */ u_char synctp; /* sync period translated for SYNCTP */ u_char offset; /* sync offset */ }; /* Register a linenumber (for debugging) */ #define LOGLINE(p) #define ESP_SHOWECBS 0x01 #define ESP_SHOWINTS 0x02 #define ESP_SHOWCMDS 0x04 #define ESP_SHOWMISC 0x08 #define ESP_SHOWTRAC 0x10 #define ESP_SHOWSTART 0x20 #define ESP_SHOWPHASE 0x40 #if ESP_DEBUG #define ESP_ECBS(str) do {if (esp_debug & ESP_SHOWECBS) printf str;} while (0) #define ESP_MISC(str) do {if (esp_debug & ESP_SHOWMISC) printf str;} while (0) #define ESP_INTS(str) do {if (esp_debug & ESP_SHOWINTS) printf str;} while (0) #define ESP_TRACE(str) do {if (esp_debug & ESP_SHOWTRAC) printf str;} while (0) #define ESP_CMDS(str) do {if (esp_debug & ESP_SHOWCMDS) printf str;} while (0) #define ESP_START(str) do {if (esp_debug & ESP_SHOWSTART) printf str;}while (0) #define ESP_PHASE(str) do {if (esp_debug & ESP_SHOWPHASE) printf str;}while (0) #else #define ESP_ECBS(str) #define ESP_MISC(str) #define ESP_INTS(str) #define ESP_TRACE(str) #define ESP_CMDS(str) #define ESP_START(str) #define ESP_PHASE(str) #endif struct esp_softc { struct device sc_dev; struct sbusdev sc_sd; /* sbus device */ struct intrhand sc_ih; /* intr handler */ struct evcnt sc_intrcnt; /* intr count */ struct scsi_link sc_link; /* scsi lint struct */ struct espregs *sc_regs; /* the registers */ struct dma_softc *sc_dma; /* corresponding DMA ctrlr */ /* register defaults */ u_char sc_cfg1; /* config 1 */ u_char sc_cfg2; /* config 2, only ESP100A/200 */ u_char sc_cfg3; /* config 3, only ESP200 */ u_char sc_ccf; /* clock conversion */ u_char sc_timeout; u_char sc_espintr; /* copies of registers */ u_char sc_espstat; u_char sc_espstep; u_char sc_espfflags; struct bootpath *sc_bp; /* current boot path component */ /* Lists of command blocks */ TAILQ_HEAD(ecb_list, ecb) free_list, ready_list, nexus_list; struct ecb *sc_nexus; /* current command */ struct ecb sc_ecb[8]; /* one per target */ struct esp_tinfo sc_tinfo[8]; /* data about the current nexus (updated for every cmd switch) */ caddr_t sc_dp; /* current data pointer */ size_t sc_dleft; /* data left to transfer */ /* adapter state */ int sc_phase; /* bus phase (based on sc_espstat) */ u_char sc_state; /* state applicable to the adapter */ u_char sc_flags; u_char sc_selid; /* message stuff */ u_char sc_msgpriq; /* messages to send (see SEND_* below) */ u_char sc_msgout; /* message that is on it's way out */ u_char sc_omess[ESP_MSGLEN_MAX]; u_char *sc_omp; /* message pointer (for multibyte messages) */ size_t sc_omlen; u_char sc_imess[ESP_MSGLEN_MAX + 1]; u_char *sc_imp; /* message pointer (for multibyte messages) */ size_t sc_imlen; /* hardware/openprom stuff */ int sc_node; /* PROM node ID */ int sc_freq; /* Freq in HZ */ int sc_pri; /* SBUS priority */ int sc_id; /* our scsi id */ int sc_rev; /* esp revision */ int sc_minsync; /* minimum sync period / 4 */ }; /* values for sc_state */ #define ESPS_IDLE 0x01 /* waiting for something to do */ #define ESPS_EXPECTDISC 0x02 /* a disconnect is going to happen */ #define ESPS_SELECTING 0x03 /* SCSI command is arbiting */ #define ESPS_RESELECTED 0x04 /* has been reselected */ #define ESPS_NEXUS 0x05 /* actively using the SCSI bus */ #define ESPS_DOINGDMA 0x06 /* doing a DMA transaction */ #define ESPS_DOINGMSGOUT 0x07 /* message-out in progress */ #define ESPS_DOINGMSGIN 0x08 /* message-in in progress */ #define ESPS_DOINGSTATUS 0x09 /* status-in in progress */ #define ESPS_SELECTSTOP 0x0a /* sent first byte of message.. */ #define ESPS_MULTMSGEND 0x0b /* done sending multibyte msg */ /* values for sc_flags */ #define ESPF_DROP_MSGI 0x01 /* Discard all msgs (parity err detected) */ #define ESPF_MAYDISCON 0x02 /* disconnection allowed */ #define ESPF_DONE 0x04 /* finished transaction */ #define ESPF_SYNCHNEGO 0x08 /* Synch negotiation in progress. */ /* values for sc_msgout */ #define SEND_DEV_RESET 0x01 #define SEND_PARITY_ERROR 0x02 #define SEND_ABORT 0x04 #define SEND_REJECT 0x08 #define SEND_INIT_DET_ERR 0x10 #define SEND_IDENTIFY 0x20 #define SEND_SDTR 0x40 #define ST_MASK 0x3e /* bits 0, 6, and 7 are reserved */ /* physical phase bits */ #define IOI 0x01 #define CDI 0x02 #define MSGI 0x04 /* values for sc_phase (where information transfer happens) */ #define DATA_OUT_PHASE (0) #define DATA_IN_PHASE (IOI) #define COMMAND_PHASE (CDI) #define STATUS_PHASE (CDI|IOI) #define MESSAGE_OUT_PHASE (MSGI|CDI) #define MESSAGE_IN_PHASE (MSGI|CDI|IOI) #define PHASE_MASK (MSGI|CDI|IOI) #define TARGETNAME(ecb) \ ((struct device *)(ecb)->xs->sc_link->adapter_softc)->dv_xname