/* $OpenBSD: aha1542.c,v 1.11 1996/03/08 16:42:47 niklas Exp $ */ /* $NetBSD: aha1542.c,v 1.55 1995/12/24 02:31:06 mycroft Exp $ */ /* * 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. */ /* * 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 #include #ifndef DDB #define Debugger() panic("should call debugger here (aha1542.c)") #endif /* ! DDB */ /* XXX fixme: * on i386 at least, xfers to/from user memory * cannot be serviced at interrupt time. */ #ifdef i386 #define VOLATILE_XS(xs) \ ((xs)->datalen > 0 && (xs)->bp == NULL && \ ((xs)->flags & SCSI_POLL) == 0) #else #define VOLATILE_XS(xs) 0 #endif #undef TUNE_1542 /* if bus speed check breaks the machine, undefine it */ /************************** board definitions *******************************/ /* * I/O Port Interface */ #define AHA_BASE aha->sc_iobase #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 */ /* * 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 */ #define AHA_CCB_MAX 32 /* store up to 32 CCBs at one time */ #define CCB_HASH_SIZE 32 /* hash table size for phystokv */ #define CCB_HASH_SHIFT 9 #define CCB_HASH(x) ((((long)(x))>>CCB_HASH_SHIFT) & (CCB_HASH_SIZE - 1)) #define aha_nextmbx(wmb, mbx, mbio) \ if ((wmb) == &(mbx)->mbio[AHA_MBX_SIZE - 1]) \ (wmb) = &(mbx)->mbio[0]; \ else \ (wmb)++; struct aha_mbx_out { u_char cmd; u_char ccb_addr[3]; }; struct aha_mbx_in { u_char stat; u_char ccb_addr[3]; }; struct aha_mbx { struct aha_mbx_out mbo[AHA_MBX_SIZE]; struct aha_mbx_in mbi[AHA_MBX_SIZE]; struct aha_mbx_out *tmbo; /* Target Mail Box out */ struct aha_mbx_in *tmbi; /* Target Mail Box in */ }; /* * 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 60 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]; /*----------------------------------------------------------------*/ #define CCB_PHYS_SIZE ((int)&((struct aha_ccb *)0)->chain) TAILQ_ENTRY(aha_ccb) chain; struct aha_ccb *nexthash; struct scsi_xfer *xs; /* the scsi_xfer for this cmd */ int flags; #define CCB_FREE 0 #define CCB_ACTIVE 1 #define CCB_ABORTED 2 struct aha_mbx_out *mbx; /* pointer to mail box */ struct isadma_seg ccb_phys[1]; /* phys segment of this ccb */ struct isadma_seg data_phys[AHA_NSEG]; /* phys segments of data */ int data_nseg; /* number of phys segments of data */ }; /* * 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 */ /* 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***************/ #ifdef AHADEBUG int aha_debug = 1; #endif /*AHADEBUG */ struct aha_softc { struct device sc_dev; struct isadev sc_id; void *sc_ih; int sc_iobase; int sc_irq, sc_drq; struct aha_mbx aha_mbx; /* all the mailboxes */ struct aha_ccb *ccbhash[CCB_HASH_SIZE]; TAILQ_HEAD(, aha_ccb) free_ccb; int numccbs; int aha_scsi_dev; /* our scsi id */ struct scsi_link sc_link; }; int aha_cmd(); /* XXX must be varargs to prototype */ int ahaintr __P((void *)); void aha_free_ccb __P((struct aha_softc *, struct aha_ccb *, int)); struct aha_ccb *aha_get_ccb __P((struct aha_softc *, int)); struct aha_ccb *aha_ccb_phys_kv __P((struct aha_softc *, u_long)); struct aha_mbx_out *aha_send_mbo __P((struct aha_softc *, int, struct aha_ccb *)); 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 *, int)); 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, }; /* 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 */ }; int ahaprobe __P((struct device *, void *, void *)); void ahaattach __P((struct device *, struct device *, void *)); int ahaprint __P((void *, char *)); struct cfdriver ahacd = { NULL, "aha", ahaprobe, ahaattach, DV_DULL, sizeof(struct aha_softc) }; #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, match, aux) struct device *parent; void *match, *aux; { struct aha_softc *aha = match; struct isa_attach_args *ia = aux; #ifdef NEWCONFIG if (ia->ia_iobase == IOBASEUNK) return 0; #endif aha->sc_iobase = ia->ia_iobase; /* * Try initialise a unit at this location * sets up dma and bus speed, loads aha->sc_irq */ if (aha_find(aha) != 0) return 0; if (ia->ia_irq != IRQUNK) { if (ia->ia_irq != aha->sc_irq) { printf("%s: irq mismatch; kernel configured %d != board configured %d\n", aha->sc_dev.dv_xname, ia->ia_irq, aha->sc_irq); return 0; } } else ia->ia_irq = aha->sc_irq; if (ia->ia_drq != DRQUNK) { if (ia->ia_drq != aha->sc_drq) { printf("%s: drq mismatch; kernel configured %d != board configured %d\n", aha->sc_dev.dv_xname, ia->ia_drq, aha->sc_drq); return 0; } } else ia->ia_drq = aha->sc_drq; ia->ia_msize = 0; ia->ia_iosize = 4; return 1; } int ahaprint(aux, name) void *aux; char *name; { if (name != NULL) printf("%s: scsibus ", name); return UNCONF; } /* * 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) isadma_cascade(ia->ia_drq); aha_init(aha); TAILQ_INIT(&aha->free_ccb); /* * fill in the prototype scsi_link. */ aha->sc_link.adapter_softc = aha; aha->sc_link.adapter_target = aha->aha_scsi_dev; aha->sc_link.adapter = &aha_switch; aha->sc_link.device = &aha_dev; aha->sc_link.openings = 2; printf("\n"); #ifdef NEWCONFIG isa_establish(&aha->sc_id, &aha->sc_dev); #endif aha->sc_ih = isa_intr_establish(ia->ia_irq, IST_EDGE, IPL_BIO, ahaintr, aha, aha->sc_dev.dv_xname); /* * ask the adapter what subunits are present */ config_found(self, &aha->sc_link, ahaprint); } /* * Catch an interrupt from the adaptor */ int ahaintr(arg) void *arg; { struct aha_softc *aha = arg; struct aha_mbx_in *wmbi; struct aha_mbx *wmbx; struct aha_ccb *ccb; u_char stat; int i; int found = 0; #ifdef AHADEBUG printf("%s: ahaintr ", aha->sc_dev.dv_xname); #endif /*AHADEBUG */ /* * First acknowlege the interrupt, Then if it's not telling about * a completed operation just return. */ stat = inb(AHA_INTR_PORT); if ((stat & (AHA_MBOA | AHA_MBIF)) == 0) { outb(AHA_CTRL_STAT_PORT, AHA_IRST); return -1; /* XXX */ } /* Mail box out empty? */ if (stat & AHA_MBOA) { /* Disable MBO available interrupt. */ outb(AHA_CMD_DATA_PORT, AHA_MBO_INTR_EN); for (i = 100000; i; i--) { if (!(inb(AHA_CTRL_STAT_PORT) & AHA_CDF)) break; delay(10); } if (!i) { printf("%s: ahaintr, cmd/data port full\n", aha->sc_dev.dv_xname); outb(AHA_CTRL_STAT_PORT, AHA_SRST); return 1; } outb(AHA_CMD_DATA_PORT, 0x00); /* Disable */ wakeup(&aha->aha_mbx); } /* Mail box in full? */ if ((stat & AHA_MBIF) == 0) return 1; wmbx = &aha->aha_mbx; wmbi = wmbx->tmbi; AGAIN: while (wmbi->stat != AHA_MBI_FREE) { ccb = aha_ccb_phys_kv(aha, _3btol(wmbi->ccb_addr)); if (!ccb) { wmbi->stat = AHA_MBI_FREE; printf("%s: BAD CCB ADDR!\n", aha->sc_dev.dv_xname); continue; } found++; switch (wmbi->stat) { case AHA_MBI_OK: case AHA_MBI_ERROR: break; case AHA_MBI_ABORT: ccb->host_stat = AHA_ABORTED; break; case AHA_MBI_UNKNOWN: ccb = 0; break; default: panic("Impossible mbxi status"); } #ifdef AHADEBUG if (aha_debug && ccb) { u_char *cp = &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 addr = 0x%08x, ", wmbi->stat, wmbi); printf("ccb addr = 0x%x\n", ccb); } #endif /* AHADEBUG */ wmbi->stat = AHA_MBI_FREE; if (ccb) { untimeout(aha_timeout, ccb); aha_done(aha, ccb); } aha_nextmbx(wmbi, wmbx, mbi); } if (!found) { for (i = 0; i < AHA_MBX_SIZE; i++) { if (wmbi->stat != AHA_MBI_FREE) { found++; break; } aha_nextmbx(wmbi, wmbx, mbi); } if (!found) { #if 0 printf("%s: mbi interrupt with no full mailboxes\n", aha->sc_dev.dv_xname); #endif } else { found = 0; goto AGAIN; } } wmbx->tmbi = wmbi; outb(AHA_CTRL_STAT_PORT, AHA_IRST); 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 s, hashnum; struct aha_ccb **hashccb; s = splbio(); if (ccb->ccb_phys[0].addr) isadma_unmap((caddr_t)ccb, CCB_PHYS_SIZE, 1, ccb->ccb_phys); /* remove from hash table */ hashnum = CCB_HASH(ccb->ccb_phys[0].addr); hashccb = &aha->ccbhash[hashnum]; while (*hashccb) { if ((*hashccb)->ccb_phys[0].addr == ccb->ccb_phys[0].addr) { *hashccb = (*hashccb)->nexthash; break; } hashccb = &(*hashccb)->nexthash; } ccb->flags = CCB_FREE; TAILQ_INSERT_HEAD(&aha->free_ccb, ccb, chain); /* * If there were none, wake anybody waiting for one to come free, * starting with queued entries. */ if (ccb->chain.tqe_next == 0) wakeup(&aha->free_ccb); splx(s); } static inline void aha_init_ccb(aha, ccb) struct aha_softc *aha; struct aha_ccb *ccb; { bzero(ccb, sizeof(struct aha_ccb)); } static inline void aha_reset_ccb(aha, ccb) struct aha_softc *aha; struct aha_ccb *ccb; { } /* * Get a free ccb */ struct aha_ccb * aha_get_ccb(aha, flags) struct aha_softc *aha; int flags; { struct aha_ccb *ccb; int hashnum, mflags, s; s = splbio(); if (flags & SCSI_NOSLEEP) mflags = ISADMA_MAP_BOUNCE; else mflags = ISADMA_MAP_BOUNCE | ISADMA_MAP_WAITOK; /* * If we can and have to, sleep waiting for one * to come free */ for (;;) { ccb = aha->free_ccb.tqh_first; if (ccb) { TAILQ_REMOVE(&aha->free_ccb, ccb, chain); break; } if (aha->numccbs < AHA_CCB_MAX) { if (ccb = (struct aha_ccb *) malloc(sizeof(struct aha_ccb), M_TEMP, M_NOWAIT)) { aha_init_ccb(aha, ccb); aha->numccbs++; } else { printf("%s: can't malloc ccb\n", aha->sc_dev.dv_xname); goto out; } break; } if ((flags & SCSI_NOSLEEP) != 0) goto out; tsleep(&aha->free_ccb, PRIBIO, "ahaccb", 0); } aha_reset_ccb(aha, ccb); ccb->flags = CCB_ACTIVE; if (isadma_map((caddr_t)ccb, CCB_PHYS_SIZE, ccb->ccb_phys, mflags | ISADMA_MAP_CONTIG) == 1) { hashnum = CCB_HASH(ccb->ccb_phys[0].addr); ccb->nexthash = aha->ccbhash[hashnum]; aha->ccbhash[hashnum] = ccb; } else { ccb->ccb_phys[0].addr = 0; aha_free_ccb(aha, ccb, flags); ccb = 0; } out: splx(s); return (ccb); } /* * given a physical address, find the ccb that it corresponds to. */ struct aha_ccb * aha_ccb_phys_kv(aha, ccb_phys) struct aha_softc *aha; u_long ccb_phys; { int hashnum = CCB_HASH(ccb_phys); struct aha_ccb *res = aha->ccbhash[hashnum]; while (res) { if (res->ccb_phys[0].addr == ccb_phys) break; res = res->nexthash; } return res; } /* * Get a mbo and send the ccb. */ struct aha_mbx_out * aha_send_mbo(aha, cmd, ccb) struct aha_softc *aha; int cmd; struct aha_ccb *ccb; { struct aha_mbx_out *wmbo; /* Mail Box Out pointer */ struct aha_mbx *wmbx; /* Mail Box pointer specified unit */ int i; /* Get the target out mail box pointer and increment. */ wmbx = &aha->aha_mbx; wmbo = wmbx->tmbo; aha_nextmbx(wmbx->tmbo, wmbx, mbo); /* * Check the outmail box is free or not. * Note: Under the normal operation, it shuld NOT happen to wait. */ while (wmbo->cmd != AHA_MBO_FREE) { /* Enable mbo available interrupt. */ outb(AHA_CMD_DATA_PORT, AHA_MBO_INTR_EN); for (i = 100000; i; i--) { if (!(inb(AHA_CTRL_STAT_PORT) & AHA_CDF)) break; delay(10); } if (!i) { printf("%s: aha_send_mbo, cmd/data port full\n", aha->sc_dev.dv_xname); outb(AHA_CTRL_STAT_PORT, AHA_SRST); return NULL; } outb(AHA_CMD_DATA_PORT, 0x01); /* Enable */ tsleep(wmbx, PRIBIO, "ahasnd", 0);/*XXX can't do this */ } /* Link ccb to mbo. */ lto3b(ccb->ccb_phys[0].addr, wmbo->ccb_addr); ccb->mbx = wmbo; wmbo->cmd = cmd; /* Sent it! */ outb(AHA_CMD_DATA_PORT, AHA_START_SCSI); return wmbo; } /* * 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->xs; 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) == 0) { printf("%s: exiting but not in use!\n", aha->sc_dev.dv_xname); Debugger(); } if (xs->error == XS_NOERROR) { if (ccb->host_stat != AHA_OK) { switch (ccb->host_stat) { case AHA_ABORTED: xs->error = XS_DRIVER_STUFFUP; break; case AHA_SEL_TIMEOUT: /* No response */ xs->error = XS_SELTIMEOUT; break; default: /* Other scsi protocol messes */ printf("%s: host_stat %x\n", aha->sc_dev.dv_xname, ccb->host_stat); xs->error = XS_DRIVER_STUFFUP; } } else if (ccb->target_stat != SCSI_OK) { switch (ccb->target_stat) { case SCSI_CHECK: s1 = (struct scsi_sense_data *) (((char *) (&ccb->scsi_cmd)) + ccb->scsi_cmd_length); s2 = &xs->sense; *s2 = *s1; xs->error = XS_SENSE; break; case SCSI_BUSY: 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 xs->resid = 0; } xs->flags |= ITSDONE; if (VOLATILE_XS(xs)) { wakeup(ccb); return; } if (ccb->data_nseg) { if (xs->flags & SCSI_DATA_IN) isadma_copyfrombuf(xs->data, xs->datalen, ccb->data_nseg, ccb->data_phys); isadma_unmap(xs->data, xs->datalen, ccb->data_nseg, ccb->data_phys); } 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; { 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->sc_drq = 0; break; case CHAN5: aha->sc_drq = 5; break; case CHAN6: aha->sc_drq = 6; break; case CHAN7: aha->sc_drq = 7; break; default: printf("%s: illegal drq setting %x\n", aha->sc_dev.dv_xname, conf.chan); return EIO; } switch (conf.intr) { case INT9: aha->sc_irq = 9; break; case INT10: aha->sc_irq = 10; break; case INT11: aha->sc_irq = 11; break; case INT12: aha->sc_irq = 12; break; case INT14: aha->sc_irq = 14; break; case INT15: aha->sc_irq = 15; break; default: printf("%s: illegal irq setting %x\n", aha->sc_dev.dv_xname, 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); return 0; } /* * Start the board, ready for normal operation */ void aha_init(aha) struct aha_softc *aha; { u_char ad[3]; struct isadma_seg mbx_phys[1]; int i; #ifdef TUNE_1542 /* * Initialize memory transfer speed * Not compiled in by default because it breaks some machines */ if (!aha_set_bus_speed(aha)) panic("aha_init: cannot set bus speed"); #endif /* TUNE_1542 */ /* * Initialize mail box. This mapping will never be undone. */ if (isadma_map((caddr_t)(&aha->aha_mbx), sizeof(struct aha_mbx), mbx_phys, ISADMA_MAP_CONTIG) != 1) panic("aha_init: cannot map mail box"); lto3b(mbx_phys[0].addr, ad); aha_cmd(aha, 4, 0, 0, 0, AHA_MBX_INIT, AHA_MBX_SIZE, ad[0], ad[1], ad[2]); for (i = 0; i < AHA_MBX_SIZE; i++) { aha->aha_mbx.mbo[i].cmd = AHA_MBO_FREE; aha->aha_mbx.mbi[i].stat = AHA_MBO_FREE; } /* * Set up initial mail box for round-robin operation. */ aha->aha_mbx.tmbo = &aha->aha_mbx.mbo[0]; aha->aha_mbx.tmbi = &aha->aha_mbx.mbi[0]; } void ahaminphys(bp) struct buf *bp; { if (bp->b_bcount > ((AHA_NSEG - 1) << PGSHIFT)) bp->b_bcount = ((AHA_NSEG - 1) << PGSHIFT); minphys(bp); } /* * 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, datalen, flags, mflags; struct iovec *iovp; struct aha_mbx_out *mbo; int s; SC_DEBUG(sc_link, SDEV_DB2, ("aha_scsi_cmd\n")); /* * get a ccb 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 & SCSI_NOSLEEP) mflags = ISADMA_MAP_BOUNCE; else mflags = ISADMA_MAP_BOUNCE | ISADMA_MAP_WAITOK; if ((flags & (ITSDONE|INUSE)) != INUSE) { printf("%s: done or not in use?\n", aha->sc_dev.dv_xname); xs->flags &= ~ITSDONE; xs->flags |= INUSE; } if ((ccb = aha_get_ccb(aha, flags)) == NULL) { xs->error = XS_DRIVER_STUFFUP; return TRY_AGAIN_LATER; } ccb->xs = xs; /* * Put all the arguments for the xfer in the ccb */ 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->data_out = 0; ccb->data_in = 0; ccb->target = sc_link->target; ccb->lun = sc_link->lun; ccb->scsi_cmd_length = xs->cmdlen; ccb->req_sense_length = sizeof(ccb->scsi_sense); ccb->host_stat = 0x00; ccb->target_stat = 0x00; ccb->data_nseg = 0; if (xs->datalen && (flags & SCSI_RESET) == 0) { sg = ((struct aha_ccb *)(ccb->ccb_phys[0].addr))->scat_gath; lto3b((vm_offset_t)sg, ccb->data_addr); sg = ccb->scat_gath; seg = 0; #ifdef TFS if (flags & SCSI_DATA_UIO) { iovp = ((struct uio *)xs->data)->uio_iov; datalen = ((struct uio *)xs->data)->uio_iovcnt; xs->datalen = 0; while (datalen && seg < AHA_NSEG) { lto3b(iovp->iov_base, sg->seg_addr); lto3b(iovp->iov_len, sg->seg_len); xs->datalen += iovp->iov_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 */ ccb->data_nseg = isadma_map(xs->data, xs->datalen, ccb->data_phys, mflags); for (seg = 0; seg < ccb->data_nseg; seg++) { lto3b(ccb->data_phys[seg].addr, sg[seg].seg_addr); lto3b(ccb->data_phys[seg].length, sg[seg].seg_len); } } lto3b(ccb->data_nseg * sizeof(struct aha_scat_gath), ccb->data_length); if (ccb->data_nseg == 0) { printf("%s: aha_scsi_cmd, cannot map\n", aha->sc_dev.dv_xname); xs->error = XS_DRIVER_STUFFUP; aha_free_ccb(aha, ccb, flags); return COMPLETE; } else if (flags & SCSI_DATA_OUT) isadma_copytobuf(xs->data, xs->datalen, ccb->data_nseg, ccb->data_phys); } else { /* No data xfer, use non S/G values */ lto3b(0, ccb->data_addr); lto3b(0, ccb->data_length); } ccb->link_id = 0; lto3b(0, ccb->link_addr); /* * Put the scsi command in the ccb and start it */ if ((flags & SCSI_RESET) == 0) bcopy(xs->cmd, &ccb->scsi_cmd, ccb->scsi_cmd_length); s = splbio(); isadma_copytobuf((caddr_t)ccb, CCB_PHYS_SIZE, 1, ccb->ccb_phys); if (aha_send_mbo(aha, AHA_MBO_START, ccb) == NULL) { splx(s); xs->error = XS_DRIVER_STUFFUP; if (ccb->data_nseg) isadma_unmap(xs->data, xs->datalen, ccb->data_nseg, ccb->data_phys); aha_free_ccb(aha, ccb, flags); return TRY_AGAIN_LATER; } /* * Usually return SUCCESSFULLY QUEUED */ SC_DEBUG(sc_link, SDEV_DB3, ("cmd_sent\n")); if (VOLATILE_XS(xs)) { timeout(aha_timeout, ccb, (xs->timeout * hz) / 1000); while ((ccb->xs->flags & ITSDONE) == 0) { tsleep(ccb, PRIBIO, "ahawait", 0); } splx(s); if (ccb->data_nseg) { if (flags & SCSI_DATA_IN) isadma_copyfrombuf(xs->data, xs->datalen, ccb->data_nseg, ccb->data_phys); isadma_unmap(xs->data, xs->datalen, ccb->data_nseg, ccb->data_phys); } aha_free_ccb(aha, ccb, xs->flags); scsi_done(xs); return COMPLETE; } if ((flags & SCSI_POLL) == 0) { timeout(aha_timeout, ccb, (xs->timeout * hz) / 1000); splx(s); return SUCCESSFULLY_QUEUED; } splx(s); /* * If we can't use interrupts, poll on completion */ if (aha_poll(aha, xs, xs->timeout)) { aha_timeout(ccb); if (aha_poll(aha, xs, 2000)) aha_timeout(ccb); } return COMPLETE; } /* * Poll a particular unit, looking for a particular xs */ int aha_poll(aha, xs, count) struct aha_softc *aha; struct scsi_xfer *xs; int count; { /* timeouts are in msec, so we loop in 1000 usec cycles */ while (count) { /* * If we had interrupts enabled, would we * have got an interrupt? */ if (inb(AHA_INTR_PORT) & AHA_ANY_INTR) ahaintr(aha); if (xs->flags & ITSDONE) return 0; delay(1000); /* only happens in boot so ok */ count--; } return 1; } #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"); return 0; } printf(", %d nsec ", aha_bus_speeds[lastworking].nsecs); if (lastworking == 7) /* is slowest already */ printf("marginal"); else { lastworking++; printf("ok, using %d nsec", aha_bus_speeds[lastworking].nsecs); } if (!aha_bus_speed_check(aha, lastworking)) { printf("test retry failed.. aborting."); 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 COMPLETE. */ char aha_scratch_buf[256]; 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 result, loopcount; struct isadma_seg test_phys[1], scratch_phys[1]; u_char ad[3]; result = 1; if (isadma_map(aha_scratch_buf, sizeof(aha_scratch_buf), scratch_phys, ISADMA_MAP_CONTIG) != 1) return 0; if (isadma_map(aha_test_string, sizeof(aha_test_string), test_phys, ISADMA_MAP_CONTIG) != 1) { isadma_unmap(aha_scratch_buf, sizeof(aha_scratch_buf), 1, scratch_phys); return 0; } isadma_copytobuf(aha_test_string, sizeof(aha_test_string), 1, test_phys); /* * 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(test_phys[0].addr, 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); isadma_copytobuf(aha_scratch_buf, sizeof(aha_scratch_buf), 1, scratch_phys); lto3b(scratch_phys[0].addr, ad); aha_cmd(aha, 3, 0, 0, 0, AHA_READ_FIFO, ad[0], ad[1], ad[2]); isadma_copyfrombuf(aha_scratch_buf, sizeof(aha_scratch_buf), 1, scratch_phys); /* * 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 (bcmp(aha_test_string, aha_scratch_buf, 54)) { result = 0; /* failed test */ break; } } isadma_unmap(aha_scratch_buf, sizeof(aha_scratch_buf), 1, scratch_phys); isadma_unmap(aha_test_string, sizeof(aha_test_string), 1, test_phys); /* copy succeeded; assume speed ok */ return result; } #endif /* TUNE_1542 */ void aha_timeout(arg) void *arg; { struct aha_ccb *ccb = arg; struct scsi_xfer *xs = ccb->xs; struct scsi_link *sc_link = xs->sc_link; struct aha_softc *aha = sc_link->adapter_softc; int s; sc_print_addr(sc_link); printf("timed out"); s = splbio(); /* * If The ccb's mbx is not free, then the board has gone south? */ if (aha_ccb_phys_kv(aha, _3btol(ccb->mbx->ccb_addr)) == ccb && ccb->mbx->cmd != AHA_MBO_FREE) { printf("%s: not taking commands!\n", aha->sc_dev.dv_xname); 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->xs->retries = 0; aha_done(aha, ccb); } else { /* abort the operation that has timed out */ printf("\n"); ccb->xs->error = XS_TIMEOUT; ccb->flags = CCB_ABORTED; aha_send_mbo(aha, AHA_MBO_ABORT, ccb); /* 2 secs for the abort */ if ((xs->flags & SCSI_POLL) == 0) timeout(aha_timeout, ccb, 2 * hz); } splx(s); }