/* * (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. */ /* * HISTORY * $Log: aha1542.c,v $ * Revision 1.8 1993/05/04 08:32:40 deraadt * support for making dev->id_alive be set, this is for iostat to * find disk devices. wee bit of a kludge. sub-device attach() * routines must now return 1 for successful attach(), 0 otherwise. * Other bsd's do this too.. * * Revision 1.7 1993/04/19 06:02:16 mycroft * Fix subtle word-size error. * * Revision 1.6 1993/04/15 07:57:50 deraadt * ioconf changes, see previous cvs's that dumped core * * Revision 1.4 1993/04/12 08:17:23 deraadt * new scsi subsystem. * changes also in config/mkioconf.c & sys/scsi/* * * Revision 1.1 1993/03/21 18:09:54 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 "aha.h" #include "sys/types.h" #include "sys/param.h" #include "sys/systm.h" #include "sys/errno.h" #include "sys/ioctl.h" #include "sys/buf.h" #include "machine/stdarg.h" #include "sys/proc.h" #include "sys/user.h" #include "sys/dkbad.h" #include "sys/disklabel.h" #include "i386/isa/isa_device.h" #include "scsi/scsi_all.h" #include "scsi/scsiconf.h" #ifdef DDB int Debugger(); #else DDB #define Debugger() panic("should call debugger here (adaptec.c)") #endif DDB extern int delaycount; /* from clock setup code */ /* 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) */ /* Number of scatter gather segments <= 16, allow 64 K i/o (min) */ #define AHA_NSEG 17 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; }; /* flags value? */ #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 #define PHYSTOKV(x) (x | 0xFE000000) #define KVTOPHYS(x) vtophys(x) #define AHA_DMA_PAGES AHA_NSEG #define PAGESIZ 4096 #define INVALIDATE_CACHE {asm volatile( ".byte 0x0F ;.byte 0x08" ); } struct scsi_xfer aha_scsi_xfer[NAHA]; struct isa_device *ahainfo[NAHA]; struct aha_mbx aha_mbx[NAHA]; struct aha_ccb *aha_ccb_free[NAHA]; struct aha_ccb aha_ccb[NAHA][AHA_MBX_SIZE]; struct aha_ccb *aha_get_ccb(); u_char aha_scratch_buf[256]; short aha_base[NAHA]; /* base port for each board */ int speed[NAHA]; int aha_int[NAHA]; int aha_dma[NAHA]; int aha_scsi_dev[NAHA]; int aha_initialized[NAHA]; int aha_debug = 0; 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); #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 */ int aha_cmd(int, int, int, int, u_char *, ...); int ahaprobe(struct isa_device *); int ahaattach(struct isa_device *); long int aha_adapter_info(int); int ahaintr(int); void aha_free_ccb(int, struct aha_ccb *, int); struct aha_ccb * aha_get_ccb(int, int); int aha_done(int, struct aha_ccb *); int aha_init(int); void ahaminphys(struct buf *); int aha_scsi_cmd(struct scsi_xfer *); int aha_set_bus_speed(int); int aha_bus_speed_check(int, int); void aha_add_timeout(struct aha_ccb *, int); void aha_remove_timeout(struct aha_ccb *); void aha_timeout(int); struct isa_driver ahadriver = { ahaprobe, ahaattach, "aha" }; struct scsi_switch aha_switch = { "aha", aha_scsi_cmd, ahaminphys, 0, 0, aha_adapter_info, 0, 0, 0 }; /* * aha_cmd(unit, icnt, ocnt,wait, retval, ...) * 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 AHA_NOP, AHA_MBX_INIT, AHA_START_SCSI & 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 */ int aha_cmd(int unit, int icnt, int ocnt, int wait, u_char *retval, ...) { va_list ap; int opc, sts; u_char oc; register i; va_start(ap, retval); opc = (u_char)va_arg(ap, int); /*printf("command: %08x %02x\n", opc, (u_char)opc);*/ /* * 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 (opc != AHA_MBX_INIT && opc != 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)opc); if(icnt) { opc = (u_char)va_arg(ap, int); /*printf("extra: %08x %02x\n", opc, (u_char)opc);*/ } } va_end(ap); /* * 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_device structure from * autoconf.c */ int ahaprobe(struct isa_device *dev) { int unit = ahaunit; dev->id_unit = unit; aha_base[unit] = dev->id_iobase; 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 */ dev->id_irq = (1 << aha_int[unit]); dev->id_drq = aha_dma[unit]; ahaunit++; return(8); } /* * Attach all the sub-devices we can find */ int ahaattach(struct isa_device *dev) { static int firsttime; int masunit = dev->id_masunit; int r; if(!firsttime) { firsttime = 1; printf("aha%d: bus speed %dns\n", masunit, speed[masunit]); } r = scsi_attach(masunit, aha_scsi_dev[masunit], &aha_switch, &dev->id_physid, &dev->id_unit, dev->id_flags); /* only one for all boards */ if(masunit==0 && firsttime==1) { firsttime = 2; aha_timeout(0); } return r; } /* * Return some information to the caller about * the adapter and it's capabilities */ long int aha_adapter_info(int unit) { return(2); /* 2 outstanding requests at a time per device */ } /* * Catch an interrupt from the adaptor */ int ahaintr(int 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 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 */ break; 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. */ void aha_free_ccb(int unit, struct aha_ccb *ccb, int flags) { 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(int unit, int 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 */ int aha_done(int unit, 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 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 */ int aha_init(int unit) { struct aha_config conf; unsigned char ad[3]; volatile int i,sts; /* * 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 */ aha_cmd(unit, 0, sizeof(conf), 0, (u_char *)&conf, AHA_CONF_GET); switch(conf.chan) { case CHAN0: outb(0x0b, 0x0c); outb(0x0a, 0x00); aha_dma[unit] = 0; break; case CHAN5: outb(0xd6, 0xc1); outb(0xd4, 0x01); aha_dma[unit] = 5; break; case CHAN6: outb(0xd6, 0xc2); outb(0xd4, 0x02); aha_dma[unit] = 6; break; case CHAN7: outb(0xd6, 0xc3); outb(0xd4, 0x03); aha_dma[unit] = 7; break; default: printf("illegal dma jumper setting\n"); return(EIO); } switch(conf.intr) { case INT9: aha_int[unit] = 9; break; case INT10: aha_int[unit] = 10; break; case INT11: aha_int[unit] = 11; break; case INT12: aha_int[unit] = 12; break; case INT14: aha_int[unit] = 14; break; case INT15: aha_int[unit] = 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 */ speed[unit] = aha_set_bus_speed(unit); if(speed[unit] == 0) { printf("aha%d found, but unable to talk to it correctly\n"); return(EIO); } /* * Initialize mail box */ lto3b(KVTOPHYS(&aha_mbx[unit]), ad); aha_cmd(unit, 4, 0, 0, (u_char *)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); } /* * 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 */ void ahaminphys(struct buf *bp) { 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(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 * (can't use S/G if zero length) */ ccb->xfer = xs; if(flags & SCSI_RESET) ccb->opcode = AHA_RESET_CCB; else 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); /* can use S/G only if not zero length */ if((xs->datalen) && (!(flags & SCSI_RESET))) { 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((u_long)iovp->iov_base, (u_char *)&sg->seg_addr); lto3b(iovp->iov_len, (u_char *)&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, (u_char *)&(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 = min(nextphys - thisphys, datalen); bytes_this_seg += bytes_this_page; datalen -= bytes_this_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, (u_char *)&(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: needed more than %d DMA segs, %d\n", unit, AHA_NSEG, datalen); 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); } /* return ??? */ } /* * 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) * Go one slower to be safe, unless eisa at 100 ns.. trust it */ int aha_set_bus_speed(int unit) { int retval, retval2; int speed; #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 { if(speed != 0) speed++; /*printf("%d nsec ok, but using ", retval);*/ retval2 = aha_bus_speed_check(unit, speed); if(retval2 == HAD_ERROR) { /*printf("marginal ");*/ retval2 = retval; } if(retval2) { /*printf("%d nsec\n", 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(int unit, int 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, (u_char *)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, (u_char *)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, (u_char *)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 copy fails.. assume too fast */ if(strcmp(aha_test_string,aha_scratch_buf)) return(0); 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]) */ void aha_add_timeout(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) { 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) { 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); } void aha_remove_timeout(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) void aha_timeout(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); }