/* * (Mostly) Written by Julian Elischer (julian@tfs.com) * for TRW Financial Systems for use under the MACH(2.5) operating system. * * TRW Financial Systems, in accordance with their agreement with Carnegie * Mellon University, makes this software available to CMU to distribute * or use in any manner that they see fit as long as this message is kept with * the software. For this reason TFS also grants any other persons or * organisations permission to use or modify this software. * * TFS supplies this software to be publicly redistributed * on the understanding that TFS is not responsible for the correct * functioning of this software in any circumstances. * * * PATCHES MAGIC LEVEL PATCH THAT GOT US HERE * -------------------- ----- ---------------------- * CURRENT PATCH LEVEL: 1 00098 * -------------------- ----- ---------------------- * * 16 Feb 93 Julian Elischer ADDED for SCSI system */ /* * Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992 */ /* * HISTORY * $Log: aha1542.c,v $ * Revision 1.1 1993/03/21 18:04:42 cgd * after 0.2.2 "stable" patches applied * * Revision 1.6 1992/08/24 21:01:58 jason * many changes and bugfixes for osf1 * * Revision 1.5 1992/07/31 01:22:03 julian * support improved scsi.h layout * * Revision 1.4 1992/07/25 03:11:26 julian * check each request fro sane flags. * * Revision 1.3 1992/07/24 00:52:45 julian * improved timeout handling. * added support for two arguments to the sd_done (or equiv) call so that * they can pre-queue several arguments. * slightly clean up error handling * * Revision 1.2 1992/07/17 22:03:54 julian * upgraded the timeout code. * added support for UIO-based i/o (as used for pmem operations) * * Revision 1.1 1992/05/27 00:51:12 balsup * machkern/cor merge */ /* * a FEW lines in this driver come from a MACH adaptec-disk driver * so the copyright below is included: * * Copyright 1990 by Open Software Foundation, * Grenoble, FRANCE * * All Rights Reserved * * Permission to use, copy, modify, and distribute this software and * its documentation for any purpose and without fee is hereby granted, * provided that the above copyright notice appears in all copies and * that both the copyright notice and this permission notice appear in * supporting documentation, and that the name of OSF or Open Software * Foundation not be used in advertising or publicity pertaining to * distribution of the software without specific, written prior * permission. * * OSF DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, * IN NO EVENT SHALL OSF BE LIABLE FOR ANY SPECIAL, INDIRECT, OR * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM * LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT, * NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include #include #include #include #include #include #include #include #include #ifdef MACH /* EITHER CMU OR OSF */ #include #include #include #ifdef OSF /* OSF ONLY */ #include #include #include #include #else OSF /* CMU ONLY */ #include #include #endif OSF #endif MACH /* end of MACH specific */ #ifdef __386BSD__ /* 386BSD specific */ #define isa_dev isa_device #define dev_unit id_unit #define dev_addr id_iobase #include #include #include #endif __386BSD__ #ifdef __386BSD__ #include "ddb.h" #if NDDB > 0 int Debugger(); #else NDDB #define Debugger() panic("should call debugger here (adaptec.c)") #endif NDDB #endif __386BSD__ extern int delaycount; /* from clock setup code */ /************************** board definitions *******************************/ /* * I/O Port Interface */ #define AHA_BASE aha_base[unit] #define AHA_CTRL_STAT_PORT (AHA_BASE + 0x0) /* control & status */ #define AHA_CMD_DATA_PORT (AHA_BASE + 0x1) /* cmds and datas */ #define AHA_INTR_PORT (AHA_BASE + 0x2) /* Intr. stat */ /* * AHA_CTRL_STAT bits (write) */ #define AHA_HRST 0x80 /* Hardware reset */ #define AHA_SRST 0x40 /* Software reset */ #define AHA_IRST 0x20 /* Interrupt reset */ #define AHA_SCRST 0x10 /* SCSI bus reset */ /* * AHA_CTRL_STAT bits (read) */ #define AHA_STST 0x80 /* Self test in Progress */ #define AHA_DIAGF 0x40 /* Diagnostic Failure */ #define AHA_INIT 0x20 /* Mbx Init required */ #define AHA_IDLE 0x10 /* Host Adapter Idle */ #define AHA_CDF 0x08 /* cmd/data out port full */ #define AHA_DF 0x04 /* Data in port full */ #define AHA_INVDCMD 0x01 /* Invalid command */ /* * AHA_CMD_DATA bits (write) */ #define AHA_NOP 0x00 /* No operation */ #define AHA_MBX_INIT 0x01 /* Mbx initialization */ #define AHA_START_SCSI 0x02 /* start scsi command */ #define AHA_START_BIOS 0x03 /* start bios command */ #define AHA_INQUIRE 0x04 /* Adapter Inquiry */ #define AHA_MBO_INTR_EN 0x05 /* Enable MBO available interrupt */ #define AHA_SEL_TIMEOUT_SET 0x06 /* set selection time-out */ #define AHA_BUS_ON_TIME_SET 0x07 /* set bus-on time */ #define AHA_BUS_OFF_TIME_SET 0x08 /* set bus-off time */ #define AHA_SPEED_SET 0x09 /* set transfer speed */ #define AHA_DEV_GET 0x0a /* return installed devices */ #define AHA_CONF_GET 0x0b /* return configuration data */ #define AHA_TARGET_EN 0x0c /* enable target mode */ #define AHA_SETUP_GET 0x0d /* return setup data */ #define AHA_WRITE_CH2 0x1a /* write channel 2 buffer */ #define AHA_READ_CH2 0x1b /* read channel 2 buffer */ #define AHA_WRITE_FIFO 0x1c /* write fifo buffer */ #define AHA_READ_FIFO 0x1d /* read fifo buffer */ #define AHA_ECHO 0x1e /* Echo command data */ struct aha_cmd_buf { u_char byte[16]; }; /* * AHA_INTR_PORT bits (read) */ #define AHA_ANY_INTR 0x80 /* Any interrupt */ #define AHA_SCRD 0x08 /* SCSI reset detected */ #define AHA_HACC 0x04 /* Command complete */ #define AHA_MBOA 0x02 /* MBX out empty */ #define AHA_MBIF 0x01 /* MBX in full */ /* * Mail box defs */ #define AHA_MBX_SIZE 16 /* mail box size */ struct aha_mbx { struct aha_mbx_out { unsigned char cmd; unsigned char ccb_addr[3]; } mbo [AHA_MBX_SIZE]; struct aha_mbx_in{ unsigned char stat; unsigned char ccb_addr[3]; } mbi[AHA_MBX_SIZE]; }; /* * mbo.cmd values */ #define AHA_MBO_FREE 0x0 /* MBO entry is free */ #define AHA_MBO_START 0x1 /* MBO activate entry */ #define AHA_MBO_ABORT 0x2 /* MBO abort entry */ #define AHA_MBI_FREE 0x0 /* MBI entry is free */ #define AHA_MBI_OK 0x1 /* completed without error */ #define AHA_MBI_ABORT 0x2 /* aborted ccb */ #define AHA_MBI_UNKNOWN 0x3 /* Tried to abort invalid CCB */ #define AHA_MBI_ERROR 0x4 /* Completed with error */ extern struct aha_mbx aha_mbx[]; /* FOR OLD VERSIONS OF THE !%$@ this may have to be 16 (yuk) */ #define AHA_NSEG 17 /* Number of scatter gather segments <= 16 */ /* allow 64 K i/o (min) */ struct aha_ccb { unsigned char opcode; unsigned char lun:3; unsigned char data_in:1; /* must be 0 */ unsigned char data_out:1; /* must be 0 */ unsigned char target:3; unsigned char scsi_cmd_length; unsigned char req_sense_length; unsigned char data_length[3]; unsigned char data_addr[3]; unsigned char link_addr[3]; unsigned char link_id; unsigned char host_stat; unsigned char target_stat; unsigned char reserved[2]; struct scsi_generic scsi_cmd; struct scsi_sense_data scsi_sense; struct aha_scat_gath { unsigned char seg_len[3]; unsigned char seg_addr[3]; } scat_gath[AHA_NSEG]; struct aha_ccb *next; struct scsi_xfer *xfer; /* the scsi_xfer for this cmd */ struct aha_mbx_out *mbx; /* pointer to mail box */ long int delta; /* difference from previous*/ struct aha_ccb *later,*sooner; int flags; #define CCB_FREE 0 #define CCB_ACTIVE 1 #define CCB_ABORTED 2 }; struct aha_ccb *aha_soonest = (struct aha_ccb *)0; struct aha_ccb *aha_latest = (struct aha_ccb *)0; long int aha_furtherest = 0; /* longest time in the timeout queue */ /* * opcode fields */ #define AHA_INITIATOR_CCB 0x00 /* SCSI Initiator CCB */ #define AHA_TARGET_CCB 0x01 /* SCSI Target CCB */ #define AHA_INIT_SCAT_GATH_CCB 0x02 /* SCSI Initiator with scattter gather*/ #define AHA_RESET_CCB 0x81 /* SCSI Bus reset */ /* * aha_ccb.host_stat values */ #define AHA_OK 0x00 /* cmd ok */ #define AHA_LINK_OK 0x0a /* Link cmd ok */ #define AHA_LINK_IT 0x0b /* Link cmd ok + int */ #define AHA_SEL_TIMEOUT 0x11 /* Selection time out */ #define AHA_OVER_UNDER 0x12 /* Data over/under run */ #define AHA_BUS_FREE 0x13 /* Bus dropped at unexpected time */ #define AHA_INV_BUS 0x14 /* Invalid bus phase/sequence */ #define AHA_BAD_MBO 0x15 /* Incorrect MBO cmd */ #define AHA_BAD_CCB 0x16 /* Incorrect ccb opcode */ #define AHA_BAD_LINK 0x17 /* Not same values of LUN for links */ #define AHA_INV_TARGET 0x18 /* Invalid target direction */ #define AHA_CCB_DUP 0x19 /* Duplicate CCB received */ #define AHA_INV_CCB 0x1a /* Invalid CCB or segment list */ #define AHA_ABORTED 42 struct aha_setup { u_char sync_neg:1; u_char parity:1; u_char :6; u_char speed; u_char bus_on; u_char bus_off; u_char num_mbx; u_char mbx[3]; struct { u_char offset:4; u_char period:3; u_char valid:1; }sync[8]; u_char disc_sts; }; struct aha_config { u_char chan; u_char intr; u_char scsi_dev:3; u_char :5; }; #define INT9 0x01 #define INT10 0x02 #define INT11 0x04 #define INT12 0x08 #define INT14 0x20 #define INT15 0x40 #define CHAN0 0x01 #define CHAN5 0x20 #define CHAN6 0x40 #define CHAN7 0x80 /*********************************** end of board definitions***************/ #ifdef MACH #define PHYSTOKV(x) phystokv(x) #define KVTOPHYS(x) kvtophys(x) #else MACH #ifdef __386BSD__ #define PHYSTOKV(x) (x | 0xFE000000) #define KVTOPHYS(x) vtophys(x) #else __386BSD__ #endif __386BSD__ #endif MACH #define AHA_DMA_PAGES AHA_NSEG #define PAGESIZ 4096 #define INVALIDATE_CACHE {asm volatile( ".byte 0x0F ;.byte 0x08" ); } u_char aha_scratch_buf[256]; #ifdef MACH caddr_t aha_base[NAHA]; /* base port for each board */ #else short aha_base[NAHA]; /* base port for each board */ #endif struct aha_mbx aha_mbx[NAHA]; struct aha_ccb *aha_ccb_free[NAHA]; struct aha_ccb aha_ccb[NAHA][AHA_MBX_SIZE]; struct scsi_xfer aha_scsi_xfer[NAHA]; struct isa_dev *ahainfo[NAHA]; struct aha_ccb *aha_get_ccb(); int aha_int[NAHA]; int aha_dma[NAHA]; int aha_scsi_dev[NAHA]; int aha_initialized[NAHA]; #ifdef OSF int aha_attached[NAHA]; #endif OSF int aha_debug = 0; int ahaprobe(), ahaattach(), ahaintr(); #ifdef MACH struct isa_driver ahadriver = { ahaprobe, 0, ahaattach, "aha", 0, 0, 0}; int (*ahaintrs[])() = {ahaintr, 0}; #endif #ifdef __386BSD__ struct isa_driver ahadriver = { ahaprobe, ahaattach, "aha",}; #endif __386BSD__ static int ahaunit = 0; #define aha_abortmbx(mbx) \ (mbx)->cmd = AHA_MBO_ABORT; \ outb(AHA_CMD_DATA_PORT, AHA_START_SCSI); #define aha_startmbx(mbx) \ (mbx)->cmd = AHA_MBO_START; \ outb(AHA_CMD_DATA_PORT, AHA_START_SCSI); int aha_scsi_cmd(); int aha_timeout(); void ahaminphys(); long int aha_adapter_info(); struct scsi_switch aha_switch = { aha_scsi_cmd, ahaminphys, 0, 0, aha_adapter_info, 0,0,0 }; #define AHA_CMD_TIMEOUT_FUDGE 200 /* multiplied to get Secs */ #define AHA_RESET_TIMEOUT 1000000 /* time to wait for reset */ #define AHA_SCSI_TIMEOUT_FUDGE 20 /* divided by for mSecs */ /***********************************************************************\ * aha_cmd(unit,icnt, ocnt,wait, retval, opcode, args) * * Activate Adapter command * * icnt: number of args (outbound bytes written after opcode) * * ocnt: number of expected returned bytes * * wait: number of seconds to wait for response * * retval: buffer where to place returned bytes * * opcode: opcode AHA_NOP, AHA_MBX_INIT, AHA_START_SCSI ... * * args: parameters * * * * Performs an adapter command through the ports. Not to be confused * * with a scsi command, which is read in via the dma * * One of the adapter commands tells it to read in a scsi command * \***********************************************************************/ aha_cmd(unit,icnt, ocnt, wait,retval, opcode, args) u_char *retval; unsigned opcode; u_char args; { unsigned *ic = &opcode; u_char oc; register i; int sts; /*******************************************************\ * multiply the wait argument by a big constant * * zero defaults to 1 * \*******************************************************/ if(!wait) wait = AHA_CMD_TIMEOUT_FUDGE * delaycount; else wait *= AHA_CMD_TIMEOUT_FUDGE * delaycount; /*******************************************************\ * Wait for the adapter to go idle, unless it's one of * * the commands which don't need this * \*******************************************************/ if (opcode != AHA_MBX_INIT && opcode != AHA_START_SCSI) { i = AHA_CMD_TIMEOUT_FUDGE * delaycount; /* 1 sec?*/ while (--i) { sts = inb(AHA_CTRL_STAT_PORT); if (sts & AHA_IDLE) { break; } } if (!i) { printf("aha_cmd: aha1542 host not idle(0x%x)\n",sts); return(ENXIO); } } /*******************************************************\ * Now that it is idle, if we expect output, preflush the* * queue feeding to us. * \*******************************************************/ if (ocnt) { while((inb(AHA_CTRL_STAT_PORT)) & AHA_DF) inb(AHA_CMD_DATA_PORT); } /*******************************************************\ * Output the command and the number of arguments given * * for each byte, first check the port is empty. * \*******************************************************/ icnt++; /* include the command */ while (icnt--) { sts = inb(AHA_CTRL_STAT_PORT); for (i=0; i< wait; i++) { sts = inb(AHA_CTRL_STAT_PORT); if (!(sts & AHA_CDF)) break; } if (i >= wait) { printf("aha_cmd: aha1542 cmd/data port full\n"); outb(AHA_CTRL_STAT_PORT, AHA_SRST); return(ENXIO); } outb(AHA_CMD_DATA_PORT, (u_char)(*ic++)); } /*******************************************************\ * If we expect input, loop that many times, each time, * * looking for the data register to have valid data * \*******************************************************/ while (ocnt--) { sts = inb(AHA_CTRL_STAT_PORT); for (i=0; i< wait; i++) { sts = inb(AHA_CTRL_STAT_PORT); if (sts & AHA_DF) break; } if (i >= wait) { printf("aha_cmd: aha1542 cmd/data port empty %d\n",ocnt); return(ENXIO); } oc = inb(AHA_CMD_DATA_PORT); if (retval) *retval++ = oc; } /*******************************************************\ * Wait for the board to report a finised instruction * \*******************************************************/ i=AHA_CMD_TIMEOUT_FUDGE * delaycount; /* 1 sec? */ while (--i) { sts = inb(AHA_INTR_PORT); if (sts & AHA_HACC) { break; } } if (!i) { printf("aha_cmd: aha1542 host not finished(0x%x)\n",sts); return(ENXIO); } outb(AHA_CTRL_STAT_PORT, AHA_IRST); return(0); } /*******************************************************\ * Check if the device can be found at the port given * * and if so, set it up ready for further work * * as an argument, takes the isa_dev structure from * * autoconf.c * \*******************************************************/ ahaprobe(dev) struct isa_dev *dev; { int unit = ahaunit; #if defined(OSF) static ihandler_t aha_handler[NAHA]; static ihandler_id_t *aha_handler_id[NAHA]; register ihandler_t *chp = &aha_handler[unit];; #endif /* defined(OSF) */ /***********************************************\ /***********************************************\ * find unit and check we have that many defined * \***********************************************/ dev->dev_unit = unit; aha_base[unit] = dev->dev_addr; if(unit >= NAHA) { printf("aha: unit number (%d) too high\n",unit); return(0); } /***********************************************\ * Try initialise a unit at this location * * sets up dma and bus speed, loads aha_int[unit]* \***********************************************/ if (aha_init(unit) != 0) { return(0); } /***********************************************\ * If it's there, put in it's interrupt vectors * \***********************************************/ #if !defined(OSF) #if defined MACH iunit[aha_int[unit]] =unit; ivect[aha_int[unit]] = ahaintr; intpri[aha_int[unit]] = dev->dev_spl; form_pic_mask(); /*take_dev_irq(dev);*/ #else #ifdef __386BSD__ dev->id_irq = (1 << aha_int[unit]); dev->id_drq = aha_dma[unit]; #endif __386BSD__ #endif #else /* !defined(OSF) */ chp->ih_level = dev->dev_pic; chp->ih_handler = dev->dev_intr[0]; chp->ih_resolver = i386_resolver; chp->ih_rdev = dev; chp->ih_stats.intr_type = INTR_DEVICE; chp->ih_stats.intr_cnt = 0; chp->ih_hparam[0].intparam = unit; if ((aha_handler_id[unit] = handler_add(chp)) != NULL) handler_enable(aha_handler_id[unit]); else panic("Unable to add aha interrupt handler"); #endif /* !defined(OSF) */ #ifdef __386BSD__ printf("\n **"); #else __386BSD__ printf("port=%x spl=%d\n", dev->dev_addr, dev->dev_spl); #endif __386BSD__ ahaunit ++; return(1); } /***********************************************\ * Attach all the sub-devices we can find * \***********************************************/ ahaattach(dev) struct isa_dev *dev; { int unit = dev->dev_unit; #ifdef __386BSD__ printf(" probing for scsi devices**\n"); #endif __386BSD__ /***********************************************\ * ask the adapter what subunits are present * \***********************************************/ scsi_attachdevs( unit, aha_scsi_dev[unit], &aha_switch); #if defined(OSF) aha_attached[unit]=1; #endif /* defined(OSF) */ if(!unit) /* only one for all boards */ { aha_timeout(0); } #ifdef __386BSD__ printf("aha%d",unit); #endif __386BSD__ return; } /***********************************************\ * Return some information to the caller about * * the adapter and it's capabilities * \***********************************************/ long int aha_adapter_info(unit) int unit; { return(2); /* 2 outstanding requests at a time per device */ } /***********************************************\ * Catch an interrupt from the adaptor * \***********************************************/ ahaintr(unit) { struct aha_ccb *ccb; unsigned char stat; register i; if(scsi_debug & PRINTROUTINES) printf("ahaintr "); /***********************************************\ * First acknowlege the interrupt, Then if it's * * not telling about a completed operation * * just return. * \***********************************************/ stat = inb(AHA_INTR_PORT); outb(AHA_CTRL_STAT_PORT, AHA_IRST); if(scsi_debug & TRACEINTERRUPTS) printf("int "); if (! (stat & AHA_MBIF)) return(1); if(scsi_debug & TRACEINTERRUPTS) printf("b "); #if defined(OSF) if (!aha_attached[unit]) { return(1); } #endif /* defined(OSF) */ /***********************************************\ * If it IS then process the competed operation * \***********************************************/ for (i = 0; i < AHA_MBX_SIZE; i++) { if (aha_mbx[unit].mbi[i].stat != AHA_MBI_FREE) { ccb = (struct aha_ccb *)PHYSTOKV( (_3btol(aha_mbx[unit].mbi[i].ccb_addr))); if((stat = aha_mbx[unit].mbi[i].stat) != AHA_MBI_OK) { switch(stat) { case AHA_MBI_ABORT: if(aha_debug) printf("abort"); ccb->host_stat = AHA_ABORTED; break; case AHA_MBI_UNKNOWN: ccb = (struct aha_ccb *)0; if(aha_debug) printf("unknown ccb for abort "); /* may have missed it */ /* no such ccb known for abort */ case AHA_MBI_ERROR: break; default: panic("Impossible mbxi status"); } if( aha_debug && ccb ) { u_char *cp; cp = (u_char *)(&(ccb->scsi_cmd)); printf("op=%x %x %x %x %x %x\n", cp[0], cp[1], cp[2], cp[3], cp[4], cp[5]); printf("stat %x for mbi[%d]\n" , aha_mbx[unit].mbi[i].stat, i); printf("addr = 0x%x\n", ccb); } } if(ccb) { aha_remove_timeout(ccb); aha_done(unit,ccb); } aha_mbx[unit].mbi[i].stat = AHA_MBI_FREE; } } return(1); } /***********************************************\ * A ccb (and hence a mbx-out is put onto the * * free list. * \***********************************************/ aha_free_ccb(unit,ccb, flags) struct aha_ccb *ccb; { unsigned int opri; if(scsi_debug & PRINTROUTINES) printf("ccb%d(0x%x)> ",unit,flags); if (!(flags & SCSI_NOMASK)) opri = splbio(); ccb->next = aha_ccb_free[unit]; aha_ccb_free[unit] = ccb; ccb->flags = CCB_FREE; if(ccb->sooner || ccb->later) { printf("yikes, still in timeout queue\n"); aha_remove_timeout(ccb); } /***********************************************\ * If there were none, wake abybody waiting for * * one to come free, starting with queued entries* \***********************************************/ if (!ccb->next) { wakeup(&aha_ccb_free[unit]); } if (!(flags & SCSI_NOMASK)) splx(opri); } /***********************************************\ * Get a free ccb (and hence mbox-out entry) * \***********************************************/ struct aha_ccb * aha_get_ccb(unit,flags) { unsigned opri; struct aha_ccb *rc; if(scsi_debug & PRINTROUTINES) printf("next; rc->flags = CCB_ACTIVE; } if (!(flags & SCSI_NOMASK)) splx(opri); return(rc); } /***********************************************\ * We have a ccb which has been processed by the * * adaptor, now we look to see how the operation * * went. Wake up the owner if waiting * \***********************************************/ aha_done(unit,ccb) struct aha_ccb *ccb; { struct scsi_sense_data *s1,*s2; struct scsi_xfer *xs = ccb->xfer; if(scsi_debug & PRINTROUTINES ) printf("aha_done "); /***********************************************\ * Otherwise, put the results of the operation * * into the xfer and call whoever started it * \***********************************************/ if(!(xs->flags & INUSE)) { printf("exiting but not in use! "); Debugger(); } if ( ( ccb->host_stat != AHA_OK || ccb->target_stat != SCSI_OK) && (!(xs->flags & SCSI_ERR_OK))) { s1 = (struct scsi_sense_data *)(((char *)(&ccb->scsi_cmd)) + ccb->scsi_cmd_length); s2 = &(xs->sense); if(ccb->host_stat) { switch(ccb->host_stat) { case AHA_ABORTED: case AHA_SEL_TIMEOUT: /* No response */ xs->error = XS_TIMEOUT; break; default: /* Other scsi protocol messes */ xs->error = XS_DRIVER_STUFFUP; if (aha_debug > 1) { printf("host_stat%x\n", ccb->host_stat); } } } else { switch(ccb->target_stat) { case 0x02: /* structure copy!!!!!*/ *s2=*s1; xs->error = XS_SENSE; break; case 0x08: xs->error = XS_BUSY; break; default: if (aha_debug > 1) { printf("target_stat%x\n", ccb->target_stat); } xs->error = XS_DRIVER_STUFFUP; } } } else /* All went correctly OR errors expected */ { xs->resid = 0; } xs->flags |= ITSDONE; aha_free_ccb(unit,ccb, xs->flags); if(xs->when_done) (*(xs->when_done))(xs->done_arg,xs->done_arg2); } /***********************************************\ * Start the board, ready for normal operation * \***********************************************/ aha_init(unit) int unit; { unsigned char ad[3]; volatile int i,sts; struct aha_config conf; /***********************************************\ * reset board, If it doesn't respond, assume * * that it's not there.. good for the probe * \***********************************************/ outb(AHA_CTRL_STAT_PORT, AHA_HRST|AHA_SRST); for (i=0; i < AHA_RESET_TIMEOUT; i++) { sts = inb(AHA_CTRL_STAT_PORT) ; if ( sts == (AHA_IDLE | AHA_INIT)) break; } if (i >= AHA_RESET_TIMEOUT) { if (aha_debug) printf("aha_init: No answer from adaptec board\n"); return(ENXIO); } /***********************************************\ * Assume we have a board at this stage * * setup dma channel from jumpers and save int * * level * \***********************************************/ #ifdef __386BSD__ printf("aha%d reading board settings, ",unit); #define PRNT(x) #else __386BSD__ printf("aha%d:",unit); #define PRNT(x) printf(x) #endif __386BSD__ aha_cmd(unit,0, sizeof(conf), 0 ,&conf, AHA_CONF_GET); switch(conf.chan) { case CHAN0: outb(0x0b, 0x0c); outb(0x0a, 0x00); aha_dma[unit] = 0; PRNT("dma=0 "); break; case CHAN5: outb(0xd6, 0xc1); outb(0xd4, 0x01); aha_dma[unit] = 5; PRNT("dma=5 "); break; case CHAN6: outb(0xd6, 0xc2); outb(0xd4, 0x02); aha_dma[unit] = 6; PRNT("dma=6 "); break; case CHAN7: outb(0xd6, 0xc3); outb(0xd4, 0x03); aha_dma[unit] = 7; PRNT("dma=7 "); break; default: printf("illegal dma jumper setting\n"); return(EIO); } switch(conf.intr) { case INT9: aha_int[unit] = 9; PRNT("int=9 "); break; case INT10: aha_int[unit] = 10; PRNT("int=10 "); break; case INT11: aha_int[unit] = 11; PRNT("int=11 "); break; case INT12: aha_int[unit] = 12; PRNT("int=12 "); break; case INT14: aha_int[unit] = 14; PRNT("int=14 "); break; case INT15: aha_int[unit] = 15; PRNT("int=15 "); break; default: printf("illegal int jumper setting\n"); return(EIO); } /* who are we on the scsi bus */ aha_scsi_dev[unit] = conf.scsi_dev; /***********************************************\ * Initialize memory transfer speed * \***********************************************/ if(!(aha_set_bus_speed(unit))) { return(EIO); } /***********************************************\ * Initialize mail box * \***********************************************/ lto3b(KVTOPHYS(&aha_mbx[unit]), ad); aha_cmd(unit,4, 0, 0, 0, AHA_MBX_INIT, AHA_MBX_SIZE, ad[0], ad[1], ad[2]); /***********************************************\ * link the ccb's with the mbox-out entries and * * into a free-list * \***********************************************/ for (i=0; i < AHA_MBX_SIZE; i++) { aha_ccb[unit][i].next = aha_ccb_free[unit]; aha_ccb_free[unit] = &aha_ccb[unit][i]; aha_ccb_free[unit]->flags = CCB_FREE; aha_ccb_free[unit]->mbx = &aha_mbx[unit].mbo[i]; lto3b(KVTOPHYS(aha_ccb_free[unit]), aha_mbx[unit].mbo[i].ccb_addr); } /***********************************************\ * Note that we are going and return (to probe) * \***********************************************/ aha_initialized[unit]++; return(0); } void ahaminphys(bp) struct buf *bp; { #ifdef MACH #if !defined(OSF) bp->b_flags |= B_NPAGES; /* can support scat/gather */ #endif /* !defined(OSF) */ #endif MACH /* aha seems to explode with 17 segs (64k may require 17 segs) */ /* on old boards so use a max of 16 segs if you have problems here*/ if(bp->b_bcount > ((AHA_NSEG - 1) * PAGESIZ)) { bp->b_bcount = ((AHA_NSEG - 1) * PAGESIZ); } } /***********************************************\ * start a scsi operation given the command and * * the data address. Also needs the unit, target * * and lu * \***********************************************/ int aha_scsi_cmd(xs) struct scsi_xfer *xs; { struct scsi_sense_data *s1,*s2; struct aha_ccb *ccb; struct aha_scat_gath *sg; int seg; /* scatter gather seg being worked on */ int i = 0; int rc = 0; int thiskv; int thisphys,nextphys; int unit =xs->adapter; int bytes_this_seg,bytes_this_page,datalen,flags; struct iovec *iovp; int s; if(scsi_debug & PRINTROUTINES) printf("aha_scsi_cmd "); /***********************************************\ * get a ccb (mbox-out) to use. If the transfer * * is from a buf (possibly from interrupt time) * * then we can't allow it to sleep * \***********************************************/ flags = xs->flags; if(!(flags & INUSE)) { printf("not in use!"); Debugger(); xs->flags |= INUSE; } if(flags & ITSDONE) { printf("Already done! check device retry code "); Debugger(); xs->flags &= ~ITSDONE; } if(xs->bp) flags |= (SCSI_NOSLEEP); /* just to be sure */ if (!(ccb = aha_get_ccb(unit,flags))) { xs->error = XS_DRIVER_STUFFUP; return(TRY_AGAIN_LATER); } if (ccb->mbx->cmd != AHA_MBO_FREE) printf("MBO not free\n"); /***********************************************\ * Put all the arguments for the xfer in the ccb * \***********************************************/ ccb->xfer = xs; if(flags & SCSI_RESET) { ccb->opcode = AHA_RESET_CCB; } else { /* can't use S/G if zero length */ ccb->opcode = (xs->datalen? AHA_INIT_SCAT_GATH_CCB :AHA_INITIATOR_CCB); } ccb->target = xs->targ;; ccb->data_out = 0; ccb->data_in = 0; ccb->lun = xs->lu; ccb->scsi_cmd_length = xs->cmdlen; ccb->req_sense_length = sizeof(ccb->scsi_sense); if((xs->datalen) && (!(flags & SCSI_RESET))) { /* can use S/G only if not zero length */ lto3b(KVTOPHYS(ccb->scat_gath), ccb->data_addr ); sg = ccb->scat_gath ; seg = 0; if(flags & SCSI_DATA_UIO) { iovp = ((struct uio *)xs->data)->uio_iov; datalen = ((struct uio *)xs->data)->uio_iovcnt; while ((datalen) && (seg < AHA_NSEG)) { lto3b(iovp->iov_base,&(sg->seg_addr)); lto3b(iovp->iov_len,&(sg->seg_len)); if(scsi_debug & SHOWSCATGATH) printf("(0x%x@0x%x)" ,iovp->iov_len ,iovp->iov_base); sg++; iovp++; seg++; datalen--; } } else { /***********************************************\ * Set up the scatter gather block * \***********************************************/ if(scsi_debug & SHOWSCATGATH) printf("%d @0x%x:- ",xs->datalen,xs->data); datalen = xs->datalen; thiskv = (int)xs->data; thisphys = KVTOPHYS(thiskv); while ((datalen) && (seg < AHA_NSEG)) { bytes_this_seg = 0; /* put in the base address */ lto3b(thisphys,&(sg->seg_addr)); if(scsi_debug & SHOWSCATGATH) printf("0x%x",thisphys); /* do it at least once */ nextphys = thisphys; while ((datalen) && (thisphys == nextphys)) /***************************************\ * This page is contiguous (physically) * * with the the last, just extend the * * length * \***************************************/ { /** how far to the end of the page ***/ nextphys = (thisphys & (~(PAGESIZ - 1))) + PAGESIZ; bytes_this_page = nextphys - thisphys; /**** or the data ****/ bytes_this_page = min(bytes_this_page ,datalen); bytes_this_seg += bytes_this_page; datalen -= bytes_this_page; /**** get more ready for the next page ****/ thiskv = (thiskv & (~(PAGESIZ - 1))) + PAGESIZ; if(datalen) thisphys = KVTOPHYS(thiskv); } /***************************************\ * next page isn't contiguous, finish the seg* \***************************************/ if(scsi_debug & SHOWSCATGATH) printf("(0x%x)",bytes_this_seg); lto3b(bytes_this_seg,&(sg->seg_len)); sg++; seg++; } } lto3b(seg * sizeof(struct aha_scat_gath),ccb->data_length); if(scsi_debug & SHOWSCATGATH) printf("\n"); if (datalen) { /* there's still data, must have run out of segs! */ printf("aha_scsi_cmd%d: more than %d DMA segs\n", unit,AHA_NSEG); xs->error = XS_DRIVER_STUFFUP; aha_free_ccb(unit,ccb,flags); return(HAD_ERROR); } } else { /* No data xfer, use non S/G values */ lto3b(0, ccb->data_addr ); lto3b(0,ccb->data_length); } lto3b(0, ccb->link_addr ); /***********************************************\ * Put the scsi command in the ccb and start it * \***********************************************/ if(!(flags & SCSI_RESET)) bcopy(xs->cmd, &ccb->scsi_cmd, ccb->scsi_cmd_length); if(scsi_debug & SHOWCOMMANDS) { u_char *b = (u_char *)&ccb->scsi_cmd; if(!(flags & SCSI_RESET)) { int i = 0; printf("aha%d:%d:%d-" ,unit ,ccb->target ,ccb->lun ); while(i < ccb->scsi_cmd_length ) { if(i) printf(","); printf("%x",b[i++]); } } else { printf("aha%d:%d:%d-RESET- " ,unit ,ccb->target ,ccb->lun ); } } if (!(flags & SCSI_NOMASK)) { s= splbio(); /* stop instant timeouts */ aha_add_timeout(ccb,xs->timeout); aha_startmbx(ccb->mbx); /***********************************************\ * Usually return SUCCESSFULLY QUEUED * \***********************************************/ splx(s); if(scsi_debug & TRACEINTERRUPTS) printf("sent "); return(SUCCESSFULLY_QUEUED); } aha_startmbx(ccb->mbx); if(scsi_debug & TRACEINTERRUPTS) printf("cmd_sent, waiting "); /***********************************************\ * If we can't use interrupts, poll on completion* \***********************************************/ { int done = 0; int count = delaycount * xs->timeout / AHA_SCSI_TIMEOUT_FUDGE; while((!done) && count) { i=0; while ( (!done) && iflags & SCSI_SILENT)) printf("cmd fail\n"); aha_abortmbx(ccb->mbx); count = delaycount * 2000 / AHA_SCSI_TIMEOUT_FUDGE; while((!done) && count) { i=0; while ( (!done) && imbx->cmd = AHA_MBO_FREE; } aha_free_ccb(unit,ccb,flags); ahaintr(unit); xs->error = XS_DRIVER_STUFFUP; return(HAD_ERROR); } ahaintr(unit); if(xs->error) return(HAD_ERROR); return(COMPLETE); } } /***************************************************************\ * try each speed in turn, when we find one that works, use * * the NEXT one for a safety margin, unless that doesn't exist * * or doesn't work. returns the nSEC value of the time used * * or 0 if it could get a working speed ( or the NEXT speed * * failed) * \***************************************************************/ int aha_set_bus_speed(unit) int unit; { int speed; int retval,retval2; #ifdef EISA speed = 0; /* start at the fastest */ #else EISA speed = 1; /* 100 ns can crash some ISA busses (!?!) */ #endif EISA while (1) { retval = aha_bus_speed_check(unit,speed); if(retval == HAD_ERROR) { printf("no working bus speed!!!\n"); return(0); } if(retval == 0) { speed++; } else /* Go one slower to be safe */ { /* unless eisa at 100 ns.. trust it */ if(speed != 0) { speed++; } printf("%d nSEC ok, use ",retval); retval2 = aha_bus_speed_check(unit,speed); if(retval2 == HAD_ERROR) /* retval is slowest already */ { printf("marginal "); retval2 = retval; } if(retval2) { printf("%d nSEC ",retval2); return(retval2); } else { printf(".. slower failed, abort.\n",retval); return(0); } } } } /***************************************************************\ * Set the DMA speed to the Nth speed and try an xfer. If it * * fails return 0, if it succeeds return the nSec value selected * * If there is no such speed return HAD_ERROR. * \***************************************************************/ static struct bus_speed { char arg; int nsecs; }aha_bus_speeds[] = { {0x88,100}, {0x99,150}, {0xaa,200}, {0xbb,250}, {0xcc,300}, {0xdd,350}, {0xee,400}, {0xff,450} }; static char aha_test_string[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890abcdefghijklmnopqrstuvwxyz!@"; int aha_bus_speed_check(unit,speed) int unit,speed; { int numspeeds = sizeof(aha_bus_speeds)/sizeof(struct bus_speed); u_char ad[3]; /*******************************************************\ * Check we have such an entry * \*******************************************************/ if(speed >= numspeeds) return(HAD_ERROR); /* illegal speed */ /*******************************************************\ * Set the dma-speed * \*******************************************************/ aha_cmd(unit,1, 0, 0, 0, AHA_SPEED_SET,aha_bus_speeds[speed].arg); /*******************************************************\ * put the test data into the buffer and calculate * * it's address. Read it onto the board * \*******************************************************/ strcpy(aha_scratch_buf,aha_test_string); lto3b(KVTOPHYS(aha_scratch_buf),ad); aha_cmd(unit,3, 0, 0, 0, AHA_WRITE_FIFO, ad[0], ad[1], ad[2]); /*******************************************************\ * clear the buffer then copy the contents back from the * * board. * \*******************************************************/ bzero(aha_scratch_buf,54); /* 54 bytes transfered by test */ aha_cmd(unit,3, 0, 0, 0, AHA_READ_FIFO, ad[0], ad[1], ad[2]); /*******************************************************\ * Compare the original data and the final data and * * return the correct value depending upon the result * \*******************************************************/ if(strcmp(aha_test_string,aha_scratch_buf)) { /* copy failed.. assume too fast */ return(0); } else { /* copy succeded assume speed ok */ return(aha_bus_speeds[speed].nsecs); } } /* * +----------+ +----------+ +----------+ * aha_soonest--->| later |--->| later|--->| later|-->0 * | [Delta] | | [Delta] | | [Delta] | * 0<---|sooner |<---|sooner |<---|sooner |<---aha_latest * +----------+ +----------+ +----------+ * * aha_furtherest = sum(Delta[1..n]) */ aha_add_timeout(ccb,time) struct aha_ccb *ccb; int time; { int timeprev; struct aha_ccb *prev; int s = splbio(); if(prev = aha_latest) /* yes, an assign */ { timeprev = aha_furtherest; } else { timeprev = 0; } while(prev && (timeprev > time)) { timeprev -= prev->delta; prev = prev->sooner; } if(prev) { ccb->delta = time - timeprev; if( ccb->later = prev->later) /* yes an assign */ { ccb->later->sooner = ccb; ccb->later->delta -= ccb->delta; } else { aha_furtherest = time; aha_latest = ccb; } ccb->sooner = prev; prev->later = ccb; } else { if( ccb->later = aha_soonest) /* yes, an assign*/ { ccb->later->sooner = ccb; ccb->later->delta -= time; } else { aha_furtherest = time; aha_latest = ccb; } ccb->delta = time; ccb->sooner = (struct aha_ccb *)0; aha_soonest = ccb; } splx(s); } aha_remove_timeout(ccb) struct aha_ccb *ccb; { int s = splbio(); if(ccb->sooner) { ccb->sooner->later = ccb->later; } else { aha_soonest = ccb->later; } if(ccb->later) { ccb->later->sooner = ccb->sooner; ccb->later->delta += ccb->delta; } else { aha_latest = ccb->sooner; aha_furtherest -= ccb->delta; } ccb->sooner = ccb->later = (struct aha_ccb *)0; splx(s); } extern int hz; #define ONETICK 500 /* milliseconds */ #define SLEEPTIME ((hz * 1000) / ONETICK) aha_timeout(arg) int arg; { struct aha_ccb *ccb; int unit; int s = splbio(); while( ccb = aha_soonest ) { if(ccb->delta <= ONETICK) /***********************************************\ * It has timed out, we need to do some work * \***********************************************/ { unit = ccb->xfer->adapter; printf("aha%d: device %d timed out ",unit ,ccb->xfer->targ); /***************************************\ * Unlink it from the queue * \***************************************/ aha_remove_timeout(ccb); /***************************************\ * If The ccb's mbx is not free, then * * the board has gone south * \***************************************/ if(ccb->mbx->cmd != AHA_MBO_FREE) { printf("aha%d not taking commands!\n" ,unit); Debugger(); } /***************************************\ * If it has been through before, then * * a previous abort has failed, don't * * try abort again * \***************************************/ if(ccb->flags == CCB_ABORTED) /* abort timed out */ { printf(" AGAIN\n"); ccb->xfer->retries = 0; /* I MEAN IT ! */ ccb->host_stat = AHA_ABORTED; aha_done(unit,ccb); } else /* abort the operation that has timed out */ { printf("\n"); aha_abortmbx(ccb->mbx); /* 2 secs for the abort */ aha_add_timeout(ccb,2000 + ONETICK); ccb->flags = CCB_ABORTED; } } else /***********************************************\ * It has not timed out, adjust and leave * \***********************************************/ { ccb->delta -= ONETICK; aha_furtherest -= ONETICK; break; } } splx(s); timeout(aha_timeout,arg,SLEEPTIME); }