/* * Copyright (c) 1994 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 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. * * 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. * * $Id: aha1542.c,v 1.31.2.2 1994/07/28 05:24:17 cgd Exp $ */ /* * Originally 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. */ /* * Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992 */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef DDB int Debugger(); #else /* NDDB */ #define Debugger() panic("should call debugger here (adaptec.c)") #endif /* NDDB */ /************************** board definitions *******************************/ /* * I/O Port Interface */ #define AHA_BASE aha->aha_base #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 */ #define AHA_EXT_BIOS 0x28 /* return extended bios info */ #define AHA_MBX_ENABLE 0x29 /* enable mail box interface */ 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 { u_char cmd; u_char ccb_addr[3]; } mbo[AHA_MBX_SIZE]; struct aha_mbx_in { u_char stat; u_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 */ /* * mbi.stat values */ #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 */ /* 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 { u_char opcode; u_char lun:3; u_char data_in:1; /* must be 0 */ u_char data_out:1; /* must be 0 */ u_char target:3; u_char scsi_cmd_length; u_char req_sense_length; u_char data_length[3]; u_char data_addr[3]; u_char link_addr[3]; u_char link_id; u_char host_stat; u_char target_stat; u_char reserved[2]; struct scsi_generic scsi_cmd; struct scsi_sense_data scsi_sense; struct aha_scat_gath { u_char seg_len[3]; u_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 */ int flags; #define CCB_FREE 0 #define CCB_ACTIVE 1 #define CCB_ABORTED 2 }; /* * 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 scatter 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; }; struct aha_inquire { u_char boardid; /* type of board */ /* 0x20 = BusLogic 545, but it gets the command wrong, only returns one byte */ /* 0x31 = AHA-1540 */ /* 0x41 = AHA-1540A/1542A/1542B */ /* 0x42 = AHA-1640 */ /* 0x43 = AHA-1542C */ /* 0x44 = AHA-1542CF */ /* 0x45 = AHA-1542CF, BIOS v2.01 */ u_char spec_opts; /* special options ID */ /* 0x41 = Board is standard model */ u_char revision_1; /* firmware revision [0-9A-Z] */ u_char revision_2; /* firmware revision [0-9A-Z] */ }; struct aha_extbios { u_char flags; /* Bit 3 == 1 extended bios enabled */ u_char mailboxlock; /* mail box lock code to unlock it */ }; #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***************/ #define PHYSTOKV(x) (((long int)(x)) ^ aha->kv_phys_xor) #define KVTOPHYS(x) vtophys(x) u_char aha_scratch_buf[256]; #ifdef AHADEBUG int aha_debug = 1; #endif /*AHADEBUG */ struct aha_softc { struct device sc_dev; struct isadev sc_id; struct intrhand sc_ih; u_short aha_base; /* base port for each board */ /* * xor this with a physaddr to get a kv addr and visa versa * for items in THIS STRUCT only. * Used to get the CCD's physical and kv addresses from each * other. */ long int kv_phys_xor; struct aha_mbx aha_mbx; /* all the mailboxes */ struct aha_ccb *aha_ccb_free; /* the next free CCB */ struct aha_ccb aha_ccb[AHA_MBX_SIZE]; /* all the CCBs */ u_short aha_int; /* our IRQ level */ u_short aha_dma; /* our DMA req channel */ int aha_scsi_dev; /* our SCSI bus address */ struct scsi_link sc_link; /* prototype for subdevs */ }; int aha_cmd(); /* XXX must be varargs to prototype */ u_int aha_adapter_info __P((struct aha_softc *)); int ahaintr __P((struct aha_softc *)); void aha_free_ccb __P((struct aha_softc *, struct aha_ccb *, int)); struct aha_ccb *aha_get_ccb __P((struct aha_softc *, int)); void aha_done __P((struct aha_softc *, struct aha_ccb *)); int aha_find __P((struct aha_softc *)); void aha_init __P((struct aha_softc *)); void ahaminphys __P((struct buf *)); int aha_scsi_cmd __P((struct scsi_xfer *)); int aha_poll __P((struct aha_softc *, struct scsi_xfer *, struct aha_ccb *)); int aha_set_bus_speed __P((struct aha_softc *)); int aha_bus_speed_check __P((struct aha_softc *, int)); void aha_timeout __P((void *arg)); struct scsi_adapter aha_switch = { aha_scsi_cmd, ahaminphys, 0, 0, aha_adapter_info, "aha" }; /* the below structure is so we have a default dev struct for out link struct */ struct scsi_device aha_dev = { NULL, /* Use default error handler */ NULL, /* have a queue, served by this */ NULL, /* have no async handler */ NULL, /* Use default 'done' routine */ "aha", 0 }; int ahaprobe(); void ahaattach(); struct cfdriver ahacd = { NULL, "aha", ahaprobe, ahaattach, DV_DULL, sizeof(struct aha_softc) }; void aha_init __P((struct aha_softc *)); #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_RESET_TIMEOUT 2000 /* time to wait for reset (mSec) */ /* * aha_cmd(aha,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 but that one is done * separately. This is only called during set-up. */ int aha_cmd(aha, icnt, ocnt, wait, retval, opcode, args) struct aha_softc *aha; int icnt, ocnt, wait; 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 sec.. * all wait loops are in 50uSec cycles */ if (wait) wait *= 20000; else wait = 20000; /* * 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 = 20000; /*do this for upto about a second */ while (--i) { sts = inb(AHA_CTRL_STAT_PORT); if (sts & AHA_IDLE) break; delay(50); } if (!i) { printf("%s: aha_cmd, host not idle(0x%x)\n", aha->sc_dev.dv_xname, 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 = wait; i; i--) { sts = inb(AHA_CTRL_STAT_PORT); if (!(sts & AHA_CDF)) break; delay(50); } if (!i) { if (opcode != AHA_INQUIRE) printf("%s: aha_cmd, cmd/data port full\n", aha->sc_dev.dv_xname); 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 = wait; i; i--) { sts = inb(AHA_CTRL_STAT_PORT); if (sts & AHA_DF) break; delay(50); } if (!i) { if (opcode != AHA_INQUIRE) printf("%s: aha_cmd, cmd/data port empty %d\n", aha->sc_dev.dv_xname, ocnt); outb(AHA_CTRL_STAT_PORT, AHA_SRST); return ENXIO; } oc = inb(AHA_CMD_DATA_PORT); if (retval) *retval++ = oc; } /* * Wait for the board to report a finised instruction */ i = 20000; while (--i) { sts = inb(AHA_INTR_PORT); if (sts & AHA_HACC) break; delay(50); } if (!i) { printf("%s: aha_cmd, host not finished(0x%x)\n", aha->sc_dev.dv_xname, 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(parent, self, aux) struct device *parent, *self; void *aux; { struct aha_softc *aha = (void *)self; struct isa_attach_args *ia = aux; #ifdef NEWCONFIG if (ia->ia_iobase == IOBASEUNK) return 0; #endif aha->aha_base = ia->ia_iobase; /* * Try initialise a unit at this location * sets up dma and bus speed, loads aha->aha_int */ if (aha_find(aha) != 0) return 0; /* * Calculate the xor product of the aha struct's * physical and virtual address. This allows us * to change addresses within the structure * from physical to virtual easily, as long as * the structure is less than 1 page in size. * This is used to recognise CCBs which are in * this struct and which are refered to by the * hardware using physical addresses. * (assumes malloc returns a chunk that doesn't * span pages) * eventually use the hash table in aha1742.c */ aha->kv_phys_xor = (long int) aha ^ (KVTOPHYS(aha)); /* * If it's there, put in it's interrupt vectors and dma channel */ if (ia->ia_irq != IRQUNK) { if (ia->ia_irq != aha->aha_int) { printf("aha%d: irq mismatch; kernel configured %d != board configured %d\n", aha->sc_dev.dv_unit, ffs(ia->ia_irq) - 1, ffs(aha->aha_int) - 1); return 0; } } else ia->ia_irq = aha->aha_int; if (ia->ia_drq != DRQUNK) { if (ia->ia_drq != aha->aha_dma) { printf("aha%d: drq mismatch; kernel configured %d != board configured %d\n", aha->sc_dev.dv_unit, ia->ia_drq, aha->aha_dma); return 0; } } else ia->ia_drq = aha->aha_dma; ia->ia_msize = 0; ia->ia_iosize = 4; return 1; } ahaprint() { } /* * Attach all the sub-devices we can find */ void ahaattach(parent, self, aux) struct device *parent, *self; void *aux; { struct isa_attach_args *ia = aux; struct aha_softc *aha = (void *)self; if (ia->ia_drq != DRQUNK) isa_dmacascade(ia->ia_drq); aha_init(aha); /* * fill in the prototype scsi_link. */ aha->sc_link.adapter_softc = aha; aha->sc_link.adapter_targ = aha->aha_scsi_dev; aha->sc_link.adapter = &aha_switch; aha->sc_link.device = &aha_dev; printf("\n"); #ifdef NEWCONFIG isa_establish(&aha->sc_id, &aha->sc_dev); #endif aha->sc_ih.ih_fun = ahaintr; aha->sc_ih.ih_arg = aha; aha->sc_ih.ih_level = IPL_BIO; intr_establish(ia->ia_irq, &aha->sc_ih); /* * ask the adapter what subunits are present */ config_found(self, &aha->sc_link, ahaprint); } /* * Return some information to the caller about the adapter and its * capabilities. */ u_int aha_adapter_info(aha) struct aha_softc *aha; { return 2; /* 2 outstanding requests at a time per device */ } /* * Catch an interrupt from the adaptor */ int ahaintr(aha) struct aha_softc *aha; { struct aha_ccb *ccb; u_char stat; register i; #ifdef AHADEBUG printf("ahaintr "); #endif /*AHADEBUG */ /* * 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 (!(stat & AHA_MBIF)) return -1; /* XXX */ #ifdef AHADEBUG printf("mbxin "); #endif /*AHADEBUG */ /* * If it IS then process the competed operation */ for (i = 0; i < AHA_MBX_SIZE; i++) { if (aha->aha_mbx.mbi[i].stat != AHA_MBI_FREE) { ccb = (struct aha_ccb *) PHYSTOKV( (_3btol(aha->aha_mbx.mbi[i].ccb_addr))); if ((stat = aha->aha_mbx.mbi[i].stat) != AHA_MBI_OK) { switch (stat) { case AHA_MBI_ABORT: #ifdef AHADEBUG if (aha_debug) printf("abort"); #endif /*AHADEBUG */ ccb->host_stat = AHA_ABORTED; break; case AHA_MBI_UNKNOWN: ccb = (struct aha_ccb *) 0; #ifdef AHADEBUG if (aha_debug) printf("unknown ccb for abort "); #endif /*AHADEBUG */ /* may have missed it */ /* no such ccb known for abort */ case AHA_MBI_ERROR: break; default: panic("Impossible mbxi status"); } #ifdef AHADEBUG 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->aha_mbx.mbi[i].stat, i); printf("addr = 0x%x\n", ccb); } #endif /*AHADEBUG */ } if (ccb) { untimeout(aha_timeout, ccb); aha_done(aha, ccb); } aha->aha_mbx.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(aha, ccb, flags) struct aha_softc *aha; struct aha_ccb *ccb; int flags; { int opri; if (!(flags & SCSI_NOMASK)) opri = splbio(); ccb->next = aha->aha_ccb_free; aha->aha_ccb_free = ccb; ccb->flags = CCB_FREE; /* * If there were none, wake anybody waiting for one to come free, * starting with queued entries. */ if (!ccb->next) wakeup((caddr_t)&aha->aha_ccb_free); if (!(flags & SCSI_NOMASK)) splx(opri); } /* * Get a free ccb (and hence mbox-out entry) */ struct aha_ccb * aha_get_ccb(aha, flags) struct aha_softc *aha; int flags; { int opri; struct aha_ccb *rc; if (!(flags & SCSI_NOMASK)) opri = splbio(); /* * If we can and have to, sleep waiting for one * to come free */ while ((!(rc = aha->aha_ccb_free)) && (!(flags & SCSI_NOSLEEP))) tsleep((caddr_t)&aha->aha_ccb_free, PRIBIO, "ahaccb", 0); if (rc) { aha->aha_ccb_free = aha->aha_ccb_free->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 */ void aha_done(aha, ccb) struct aha_softc *aha; struct aha_ccb *ccb; { struct scsi_sense_data *s1, *s2; struct scsi_xfer *xs = ccb->xfer; SC_DEBUG(xs->sc_link, SDEV_DB2, ("aha_done\n")); /* * Otherwise, put the results of the operation * into the xfer and call whoever started it */ if (!(xs->flags & INUSE)) { printf("%s: exiting but not in use!\n", aha->sc_dev.dv_xname); Debugger(); } if ((ccb->host_stat != AHA_OK || ccb->target_stat != SCSI_OK) && (!(xs->flags & SCSI_ERR_OK))) { /* * We have an error, that we cannot ignore. */ s1 = (struct scsi_sense_data *) (((char *) (&ccb->scsi_cmd)) + ccb->scsi_cmd_length); s2 = &(xs->sense); if (ccb->host_stat) { SC_DEBUG(xs->sc_link, SDEV_DB3, ("host err 0x%x\n", 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; printf("%s: host_stat %x\n", aha->sc_dev.dv_xname, ccb->host_stat); } } else { SC_DEBUG(xs->sc_link, SDEV_DB3, ("target err 0x%x\n", ccb->target_stat)); switch (ccb->target_stat) { case 0x02: /* structure copy!!!!! */ *s2 = *s1; xs->error = XS_SENSE; break; case 0x08: xs->error = XS_BUSY; break; default: printf("%s: target_stat %x\n", aha->sc_dev.dv_xname, ccb->target_stat); xs->error = XS_DRIVER_STUFFUP; } } } else { /* All went correctly OR errors expected */ xs->resid = 0; } xs->flags |= ITSDONE; aha_free_ccb(aha, ccb, xs->flags); scsi_done(xs); } /* * Find the board and find its irq/drq */ int aha_find(aha) struct aha_softc *aha; { u_char ad[3]; volatile int i, sts; struct aha_config conf; struct aha_inquire inquire; struct aha_extbios extbios; /* * 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 = AHA_RESET_TIMEOUT; i; i--) { sts = inb(AHA_CTRL_STAT_PORT); if (sts == (AHA_IDLE | AHA_INIT)) break; delay(1000); /* calibrated in msec */ } if (!i) { #ifdef AHADEBUG if (aha_debug) printf("aha_find: No answer from adaptec board\n"); #endif /*AHADEBUG */ return ENXIO; } /* * Assume we have a board at this stage, do an adapter inquire * to find out what type of controller it is. If the command * fails, we assume it's either a crusty board or an old 1542 * clone, and skip the board-specific stuff. */ if (aha_cmd(aha, 0, sizeof(inquire), 1, &inquire, AHA_INQUIRE)) { /* * aha_cmd() already started the reset. It's not clear we * even need to bother here. */ for (i = AHA_RESET_TIMEOUT; i; i--) { sts = inb(AHA_CTRL_STAT_PORT); if (sts == (AHA_IDLE | AHA_INIT)) break; delay(1000); } if (!i) { #ifdef AHADEBUG printf("aha_init: soft reset failed\n"); #endif /* AHADEBUG */ return ENXIO; } #ifdef AHADEBUG printf("aha_init: inquire command failed\n"); #endif /* AHADEBUG */ goto noinquire; } #ifdef AHADEBUG printf("%s: inquire %x, %x, %x, %x\n", aha->sc_dev.dv_xname, inquire.boardid, inquire.spec_opts, inquire.revision_1, inquire.revision_2); #endif /* AHADEBUG */ /* * If we are a 1542C or 1542CF disable the extended bios so that the * mailbox interface is unlocked. * No need to check the extended bios flags as some of the * extensions that cause us problems are not flagged in that byte. */ if (inquire.boardid == 0x43 || inquire.boardid == 0x44 || inquire.boardid == 0x45) { aha_cmd(aha, 0, sizeof(extbios), 0, &extbios, AHA_EXT_BIOS); #ifdef AHADEBUG printf("%s: extended bios flags %x\n", aha->sc_dev.dv_xname, extbios.flags); #endif /* AHADEBUG */ printf("%s: 1542C/CF detected, unlocking mailbox\n", aha->sc_dev.dv_xname); aha_cmd(aha, 2, 0, 0, 0, AHA_MBX_ENABLE, 0, extbios.mailboxlock); } noinquire: /* * setup dma channel from jumpers and save int * level */ delay(1000); /* for Bustek 545 */ aha_cmd(aha, 0, sizeof(conf), 0, &conf, AHA_CONF_GET); switch (conf.chan) { case CHAN0: aha->aha_dma = 0; break; case CHAN5: aha->aha_dma = 5; break; case CHAN6: aha->aha_dma = 6; break; case CHAN7: aha->aha_dma = 7; break; default: printf("illegal dma setting %x\n", conf.chan); return EIO; } switch (conf.intr) { case INT9: aha->aha_int = IRQ9; break; case INT10: aha->aha_int = IRQ10; break; case INT11: aha->aha_int = IRQ11; break; case INT12: aha->aha_int = IRQ12; break; case INT14: aha->aha_int = IRQ14; break; case INT15: aha->aha_int = IRQ15; break; default: printf("illegal int setting %x\n", conf.intr); return EIO; } /* who are we on the scsi bus? */ aha->aha_scsi_dev = conf.scsi_dev; /* * Change the bus on/off times to not clash with other dma users. */ aha_cmd(aha, 1, 0, 0, 0, AHA_BUS_ON_TIME_SET, 7); aha_cmd(aha, 1, 0, 0, 0, AHA_BUS_OFF_TIME_SET, 4); #ifdef TUNE_1542 #error XXX Must deal with configuring the DRQ channel if we do this. /* * Initialize memory transfer speed * Not compiled in by default because it breaks some machines */ if (!aha_set_bus_speed(aha)) return EIO; #endif /* TUNE_1542 */ return 0; } /* * Start the board, ready for normal operation */ void aha_init(aha) struct aha_softc *aha; { u_char ad[4]; volatile int i; /* * Initialize mail box */ lto3b(KVTOPHYS(&aha->aha_mbx), ad); aha_cmd(aha, 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 * this is a kludge but it works */ for (i = 0; i < AHA_MBX_SIZE; i++) { aha->aha_ccb[i].next = aha->aha_ccb_free; aha->aha_ccb_free = &aha->aha_ccb[i]; aha->aha_ccb_free->flags = CCB_FREE; aha->aha_ccb_free->mbx = &aha->aha_mbx.mbo[i]; lto3b(KVTOPHYS(aha->aha_ccb_free), aha->aha_mbx.mbo[i].ccb_addr); } } void ahaminphys(bp) struct buf *bp; { /* 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) << PGSHIFT)) bp->b_bcount = ((AHA_NSEG - 1) << PGSHIFT); } /* * 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_link *sc_link = xs->sc_link; struct aha_softc *aha = sc_link->adapter_softc; struct aha_ccb *ccb; struct aha_scat_gath *sg; int seg; /* scatter gather seg being worked on */ int thiskv; int thisphys, nextphys; int bytes_this_seg, bytes_this_page, datalen, flags; struct iovec *iovp; int s; SC_DEBUG(sc_link, SDEV_DB2, ("aha_scsi_cmd\n")); /* * 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 (!(ccb = aha_get_ccb(aha, flags))) { xs->error = XS_DRIVER_STUFFUP; return TRY_AGAIN_LATER; } if (ccb->mbx->cmd != AHA_MBO_FREE) printf("%s: MBO not free\n", aha->sc_dev.dv_xname); /* * 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 = sc_link->target; ccb->data_out = 0; ccb->data_in = 0; ccb->lun = sc_link->lun; 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; #ifdef TFS_ONLY 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); SC_DEBUGN(sc_link, SDEV_DB4, ("UIO(0x%x@0x%x)", iovp->iov_len, iovp->iov_base)); sg++; iovp++; seg++; datalen--; } } else #endif /*TFS_ONLY */ { /* * Set up the scatter gather block */ SC_DEBUG(sc_link, SDEV_DB4, ("%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); SC_DEBUGN(sc_link, SDEV_DB4, ("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 */ /* check it fits on the ISA bus */ if (thisphys > 0xFFFFFF) { printf("%s: DMA beyond" " end of ISA\n", aha->sc_dev.dv_xname); xs->error = XS_DRIVER_STUFFUP; aha_free_ccb(aha, ccb, flags); return HAD_ERROR; } /** how far to the end of the page ***/ nextphys = (thisphys & ~PGOFSET) + NBPG; 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 & ~PGOFSET) + NBPG; if (datalen) thisphys = KVTOPHYS(thiskv); } /* * next page isn't contiguous, finish the seg */ SC_DEBUGN(sc_link, SDEV_DB4, ("(0x%x)", bytes_this_seg)); lto3b(bytes_this_seg, sg->seg_len); sg++; seg++; } } lto3b(seg * sizeof(struct aha_scat_gath), ccb->data_length); SC_DEBUGN(sc_link, SDEV_DB4, ("\n")); if (datalen) { /* * there's still data, must have run out of segs! */ printf("%s: aha_scsi_cmd, more than %d DMA segs\n", aha->sc_dev.dv_xname, AHA_NSEG); xs->error = XS_DRIVER_STUFFUP; aha_free_ccb(aha, 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 (!(flags & SCSI_NOMASK)) { s = splbio(); /* stop instant timeouts */ timeout(aha_timeout, ccb, (xs->timeout * hz) / 1000); aha_startmbx(ccb->mbx); /* * Usually return SUCCESSFULLY QUEUED */ splx(s); SC_DEBUG(sc_link, SDEV_DB3, ("sent\n")); return SUCCESSFULLY_QUEUED; } aha_startmbx(ccb->mbx); SC_DEBUG(sc_link, SDEV_DB3, ("cmd sent, waiting\n")); /* * If we can't use interrupts, poll on completion */ return aha_poll(aha, xs, ccb); /* only during boot */ } /* * Poll a particular unit, looking for a particular xs */ int aha_poll(aha, xs, ccb) struct aha_softc *aha; struct scsi_xfer *xs; struct aha_ccb *ccb; { int done = 0; int count = xs->timeout; u_char stat; /* timeouts are in msec, so we loop in 1000 usec cycles */ while (count) { /* * If we had interrupts enabled, would we * have got an interrupt? */ stat = inb(AHA_INTR_PORT); if (stat & AHA_ANY_INTR) ahaintr(aha); if (xs->flags & ITSDONE) break; delay(1000); /* only happens in boot so ok */ count--; } if (!count) { /* * We timed out, so call the timeout handler manually, * accounting for the fact that the clock is not running yet * by taking out the clock queue entry it makes. */ aha_timeout((caddr_t)ccb); /* * because we are polling, take out the timeout entry * aha_timeout made */ untimeout(aha_timeout, ccb); count = 2000; while (count) { /* * Once again, wait for the int bit */ stat = inb(AHA_INTR_PORT); if (stat & AHA_ANY_INTR) ahaintr(aha); if (xs->flags & ITSDONE) break; delay(1000); /* only happens in boot so ok */ count--; } if (!count) { /* * We timed out again.. this is bad * Notice that this time there is no * clock queue entry to remove */ aha_timeout((caddr_t)ccb); } } if (xs->error) return HAD_ERROR; return COMPLETE; } #ifdef TUNE_1542 /* * Try all the speeds from slowest to fastest.. if it finds a * speed that fails, back off one notch from the last working * speed (unless there is no other notch). * Returns the nSEC value of the time used * or 0 if it could get a working speed (or the NEXT speed * failed) */ static struct bus_speed { u_char arg; int nsecs; } aha_bus_speeds[] = { {0x88, 100}, {0x99, 150}, {0xaa, 200}, {0xbb, 250}, {0xcc, 300}, {0xdd, 350}, {0xee, 400}, {0xff, 450} }; int aha_set_bus_speed(aha) struct aha_softc *aha; { int speed; int lastworking; lastworking = -1; for (speed = 7; speed >= 0; speed--) { if (!aha_bus_speed_check(aha, speed)) break; lastworking = speed; } if (lastworking == -1) { printf("no working bus speed\n"); return 0; } printf("%d nsec ", aha_bus_speeds[lastworking].nsecs); if (lastworking == 7) /* is slowest already */ printf("marginal\n"); else { lastworking++; printf("ok, using %d nsec\n", aha_bus_speeds[lastworking].nsecs); } if (!aha_bus_speed_check(aha, lastworking)) { printf("test retry failed.. aborting.\n"); return 0; } return 1; } /* * 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 char aha_test_string[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890abcdefghijklmnopqrstuvwxyz!@"; int aha_bus_speed_check(aha, speed) struct aha_softc *aha; int speed; { int numspeeds = sizeof(aha_bus_speeds) / sizeof(struct bus_speed); int loopcount; u_char ad[3]; /* * Set the dma-speed */ aha_cmd(aha, 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 */ for (loopcount = 100; loopcount; loopcount--) { lto3b(KVTOPHYS(aha_test_string), ad); aha_cmd(aha, 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); lto3b(KVTOPHYS(aha_scratch_buf), ad); aha_cmd(aha, 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. We only check the * first 54 bytes, because that's all the board copies during * WRITE_FIFO and READ_FIFO. */ if (memcmp(aha_test_string, aha_scratch_buf, 54)) return 0; /* failed test */ } /* copy succeeded; assume speed ok */ return 1; } #endif /* TUNE_1542 */ void aha_timeout(arg) void *arg; { int s = splbio(); struct aha_ccb *ccb = (struct aha_ccb *)arg; struct aha_softc *aha; aha = ccb->xfer->sc_link->adapter_softc; sc_print_addr(ccb->xfer->sc_link); printf("timed out "); /* * If The ccb's mbx is not free, then * the board has gone south */ if (ccb->mbx->cmd != AHA_MBO_FREE) { printf("\nadapter not taking commands.. frozen?!\n"); 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(aha, ccb); } else { /* abort the operation that has timed out */ printf("\n"); aha_abortmbx(ccb->mbx); /* 4 secs for the abort */ timeout(aha_timeout, ccb, 2 * hz); ccb->flags = CCB_ABORTED; } splx(s); }