/* * 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. * * $Id: bt.c,v 1.7 1996/02/18 07:45:36 gibbs Exp $ */ /* * Bulogic/Bustek 32 bit Addressing Mode SCSI driver. * * NOTE: 1. Some bt5xx card can NOT handle 32 bit addressing mode. * 2. OLD bt445s Revision A,B,C,D(nowired) + any firmware version * has broken busmaster for handling 32 bit addressing on H/W bus * side. * * 3. Extended probing still needs confirmation from our user base, due * to several H/W and firmware dependencies. If you have a problem * with extended probing, please contact 'amurai@spec.co.jp' * * amurai@spec.co.jp 94/6/16 */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include struct bt_data *btdata[NBT]; /* * I/O Port Interface */ #define BT_BASE bt->bt_base #define BT_CTRL_STAT_PORT (BT_BASE + 0x0) /* control & status */ /* ReadOps WriteOps */ #define BT_HRST 0x80 /* Hardware reset */ #define BT_SRST 0x40 /* Software reset */ #define BT_IRST 0x20 /* Interrupt reset */ #define BT_SCRST 0x10 /* SCSI bus reset */ #define BT_STST 0x80 /* Self test in Progress */ #define BT_DIAGF 0x40 /* Diagnostic Failure */ #define BT_INIT 0x20 /* Mbx Init required */ #define BT_IDLE 0x10 /* Host Adapter Idle */ #define BT_CDF 0x08 /* cmd/data out port full */ #define BT_DF 0x04 /* Data in port full */ #define BT_INVDCMD 0x01 /* Invalid command */ #define BT_STAT_MASK \ (BT_STST | BT_DIAGF | BT_INIT | BT_IDLE | BT_CDF | BT_DF | BT_INVDCMD) #define BT_CMD_DATA_PORT (BT_BASE + 0x1) /* cmds and datas */ /* ReadOps WriteOps */ #define BT_NOP 0x00 /* No operation */ #define BT_MBX_INIT 0x01 /* Mbx initialization */ #define BT_START_SCSI 0x02 /* start scsi command */ #define BT_START_BIOS 0x03 /* start bios command */ #define BT_INQUIRE 0x04 /* Adapter Inquiry */ #define BT_MBO_INTR_EN 0x05 /* Enable MBO available intr */ #define BT_SEL_TIMEOUT_SET 0x06 /* set selection time-out */ #define BT_BUS_ON_TIME_SET 0x07 /* set bus-on time */ #define BT_BUS_OFF_TIME_SET 0x08 /* set bus-off time */ #define BT_SPEED_SET 0x09 /* set transfer speed */ #define BT_DEV_GET 0x0a /* return installed devices */ #define BT_CONF_GET 0x0b /* return configuration data */ #define BT_TARGET_EN 0x0c /* enable target mode */ #define BT_SETUP_GET 0x0d /* return setup data */ #define BT_WRITE_CH2 0x1a /* write channel 2 buffer */ #define BT_READ_CH2 0x1b /* read channel 2 buffer */ #define BT_WRITE_FIFO 0x1c /* write fifo buffer */ #define BT_READ_FIFO 0x1d /* read fifo buffer */ #define BT_ECHO 0x1e /* Echo command data */ #define BT_MBX_INIT_EXTENDED 0x81 /* Mbx initialization */ #define BT_INQUIRE_REV_THIRD 0x84 /* Get FirmWare version #3 */ #define BT_INQUIRE_REV_FOURTH 0x85 /* Get FirmWare version #4 */ #define BT_INQUIRE_EXTENDED 0x8D /* Adapter Setup Inquiry */ /* The following commands appeared at FirmWare 3.31 */ #define BT_ROUND_ROBIN 0x8f /* Enable/Disable round robin */ #define BT_STRICT_ROUND_ROBIN 0x00 /* Parameter for strict mode */ #define BT_AGRES_ROUND_ROBIN 0x01 /* Parameter for back compat */ #define BT_INTR_PORT (BT_BASE + 0x2) /* Intr. stat */ /* ReadOps WriteOps */ #define BT_ANY_INTR 0x80 /* Any interrupt */ #define BT_SCRD 0x08 /* SCSI reset detected */ #define BT_HACC 0x04 /* Command complete */ #define BT_MBOA 0x02 /* MBX out empty */ #define BT_MBIF 0x01 /* MBX in full */ struct bt_cmd_buf { u_char byte[16]; }; #define CCB_HASH_SHIFT 9 /* only hash on multiples of 512 */ #define CCB_HASH(x) ((((long int)(x))>>CCB_HASH_SHIFT) % CCB_HASH_SIZE) #define bt_nextmbx( wmb, mbx, mbio ) \ if ( (wmb) == &((mbx)->mbio[BT_MBX_SIZE - 1 ]) ) \ (wmb) = &((mbx)->mbio[0]); \ else \ (wmb)++; struct bt_boardID { u_char board_type; u_char custom_feture; char firm_revision; u_char firm_version; }; struct bt_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]; /* for backwards compatibility */ struct { u_char offset:4; u_char period:3; u_char valid:1; } sync[8]; u_char disc_sts; }; struct bt_config { u_char chan; #define BUSDMA 0x00 #define CHAN0 0x01 #define CHAN5 0x20 #define CHAN6 0x40 #define CHAN7 0x80 u_char intr; #define INT9 0x01 #define INT10 0x02 #define INT11 0x04 #define INT12 0x08 #define INT14 0x20 #define INT15 0x40 u_char scsi_dev:3; /* XXX What about Wide Controllers? */ u_char :5; }; /* * Determine 32bit address/Data firmware functionality from the bus type * Note: bt742a/747[s|d]/757/946/445s will return 'E' * bt542b/545s/545d will return 'A' * 94/05/18 amurai@spec.co.jp */ struct bt_ext_info { u_char bus_type; /* Host adapter bus type */ #define BT_BUS_TYPE_24bit 'A' /* PC/AT 24 bit address bus type */ #define BT_BUS_TYPE_32bit 'E' /* EISA/VLB/PCI 32 bit address type */ #define BT_BUS_TYPE_MCA 'M' /* Micro chanel? */ u_char bios_addr; /* Bios Address-Not used */ u_short max_seg; /* Max segment List */ u_char num_mbx; /* Number of mailbox */ int32_t mbx_base; /* mailbox base address */ struct { u_char resv1:1; /* ??? */ u_char force:1; /* ON: force sync */ u_char maxsync:1; /* ON: 10MB/s , OFF: 5MB/s */ u_char resv2:2; /* ??? */ u_char sync:1; /* ON: Sync, OFF: async ONLY!! */ u_char resv3:2; /* ??? */ } s; u_char firmid[3]; /* Firmware ver. & rev. w/o last char */ }; #define BT_GET_BOARD_INFO 0x8b /* Get H/W ID and Revision */ struct bt_board_info { u_char id[4]; /* i.e bt742a -> '7','4','2','A' */ u_char ver[2]; /* i.e Board Revision 'H' -> 'H', 0x00 */ }; #define BT_GET_SYNC_VALUE 0x8c /* Get Synchronous Value */ struct bt_sync_value { u_char value[8]; /* Synchrnous value (value * 10 nsec) */ }; #define KVTOPHYS(x) vtophys(x) #define PAGESIZ 4096 #define INVALIDATE_CACHE {asm volatile( ".byte 0x0F ;.byte 0x08" ); } /***********debug values *************/ #define BT_SHOWCCBS 0x01 #define BT_SHOWINTS 0x02 #define BT_SHOWCMDS 0x04 #define BT_SHOWMISC 0x08 static int bt_debug = 0; SYSCTL_INT(_debug, OID_AUTO, bt_debug, CTLFLAG_RW, &bt_debug, 0, ""); static u_int32_t bt_adapter_info __P((int unit)); static struct bt_ccb * bt_ccb_phys_kv __P((struct bt_data *bt, physaddr ccb_phys)); #ifdef notyet static int bt_cmd __P((int unit, int icnt, int ocnt, int wait, u_char *retval, unsigned opcode, ...)); #else static int bt_cmd(); #endif static void bt_done __P((struct bt_data *bt, struct bt_ccb *ccb)); static void bt_free_ccb __P((struct bt_data *bt, struct bt_ccb *ccb, int flags)); static struct bt_ccb * bt_get_ccb __P((struct bt_data *bt, int flags)); static void bt_inquire_setup_information __P((struct bt_data *bt, struct bt_ext_info *info)); static void btminphys __P((struct buf *bp)); static int bt_poll __P((struct bt_data *bt, struct scsi_xfer *xs, struct bt_ccb *ccb)); #ifdef UTEST static void bt_print_active_ccbs __P((int unit)); static void bt_print_ccb __P((struct bt_ccb *ccb)); #endif static int32_t bt_scsi_cmd __P((struct scsi_xfer *xs)); static BT_MBO * bt_send_mbo __P((struct bt_data *bt, int flags, int cmd, struct bt_ccb *ccb)); static timeout_t bt_timeout; u_long bt_unit = 0; static int btprobing = 1; /* * XXX * Do our own re-probe protection until a configuration * manager can do it for us. This ensures that we don't * reprobe a card already found by the EISA or PCI probes. */ struct bt_found { u_long port; char probed; }; static struct bt_found found[] = { { 0x330, 0 }, { 0x334, 0 }, { 0x230, 0 }, { 0x234, 0 }, { 0x130, 0 }, { 0x134, 0 } }; static struct scsi_adapter bt_switch = { bt_scsi_cmd, btminphys, 0, 0, bt_adapter_info, "bt", { 0, 0 } }; /* the below structure is so we have a default dev struct for out link struct */ static struct scsi_device bt_dev = { NULL, /* Use default error handler */ NULL, /* have a queue, served by this */ NULL, /* have no async handler */ NULL, /* Use default 'done' routine */ "bt", 0, { 0, 0 } }; #define BT_RESET_TIMEOUT 1000 /* * bt_cmd(bt, 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 BT_NOP, BT_MBX_INIT, BT_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. */ static int bt_cmd(bt, icnt, ocnt, wait, retval, opcode, args) struct bt_data* bt; int icnt; int ocnt; int 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 */ if (wait) wait *= 100000; else wait = 100000; /* * Wait for the adapter to go idle, unless it's one of * the commands which don't need this */ if (opcode != BT_MBX_INIT && opcode != BT_START_SCSI) { i = 100000; /* 1 sec? */ while (--i) { sts = inb(BT_CTRL_STAT_PORT); if (sts & BT_IDLE) { break; } DELAY(10); } if (i == 0) { if(!btprobing) printf("bt%d: bt_cmd, host not idle(0x%x)\n", bt->unit, sts); return (ENXIO); } } /* * Now that it is idle, if we expect output, preflush the * queue feeding to us. */ if (ocnt) { while ((inb(BT_CTRL_STAT_PORT)) & BT_DF) inb(BT_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(BT_CTRL_STAT_PORT); for (i = wait; i; i--) { sts = inb(BT_CTRL_STAT_PORT); if (!(sts & BT_CDF)) break; DELAY(10); } if (i == 0) { if(!btprobing) printf("bt%d: bt_cmd, cmd/data port full\n", bt->unit); outb(BT_CTRL_STAT_PORT, BT_SRST); return (ENXIO); } outb(BT_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(BT_CTRL_STAT_PORT); for (i = wait; i; i--) { sts = inb(BT_CTRL_STAT_PORT); if (sts & BT_DF) break; DELAY(10); } if (i == 0) { if(!btprobing) printf("bt%d: bt_cmd, cmd/data port empty %d\n", bt->unit, ocnt); return (ENXIO); } oc = inb(BT_CMD_DATA_PORT); if (retval) *retval++ = oc; } /* * Wait for the board to report a finised instruction */ i = 100000; /* 1 sec? */ while (--i) { sts = inb(BT_INTR_PORT); if (sts & BT_HACC) { break; } DELAY(10); } if (i == 0) { if(!btprobing) printf("bt%d: bt_cmd, host not finished(0x%x)\n", bt->unit, sts); return (ENXIO); } outb(BT_CTRL_STAT_PORT, BT_IRST); return (0); } struct bt_data * bt_alloc(unit, iobase) int unit; u_long iobase; { struct bt_data *bt; int i; if (unit >= NBT) { printf("bt: unit number (%d) too high\n", unit); return NULL; } /* * Allocate a storage area for us */ if (btdata[unit]) { printf("bt%d: memory already allocated\n", unit); return NULL; } /* * Ensure that we haven't already been probed */ for (i=0; i < sizeof(found)/sizeof(struct bt_found); i++) { if (found[i].port == iobase) { if (found[i].probed) return NULL; else { found[i].probed = 1; break; } } } bt = malloc(sizeof(struct bt_data), M_DEVBUF, M_NOWAIT); if (!bt) { printf("bt%d: cannot malloc!\n", unit); return NULL; } bzero(bt, sizeof(struct bt_data)); btdata[unit] = bt; bt->unit = unit; bt->bt_base = iobase; return(bt); } void bt_free(bt) struct bt_data *bt; { btdata[bt->unit] = NULL; free(bt, M_DEVBUF); return; } int bt_attach(bt) struct bt_data *bt; { struct scsibus_data *scbus; btprobing = 0; /* * fill in the prototype scsi_link. */ bt->sc_link.adapter_unit = bt->unit; bt->sc_link.adapter_targ = bt->bt_scsi_dev; bt->sc_link.adapter_softc = bt; bt->sc_link.adapter = &bt_switch; bt->sc_link.device = &bt_dev; bt->sc_link.flags = bt->bt_bounce ? SDEV_BOUNCE : 0; /* * Prepare the scsibus_data area for the upperlevel * scsi code. */ scbus = scsi_alloc_bus(); /* XXX scbus->magtarg should be adjusted for Wide cards */ if(!scbus) return 0; scbus->adapter_link = &bt->sc_link; /* * ask the adapter what subunits are present */ scsi_attachdevs(scbus); return 1; } /* * Return some information to the caller about the adapter and its * capabilities. */ static u_int32_t bt_adapter_info(unit) int unit; { return (2); /* 2 outstanding requests at a time per device */ } /* * Catch an interrupt from the adaptor */ void bt_intr(arg) void *arg; { BT_MBI *wmbi; struct bt_mbx *wmbx; struct bt_ccb *ccb; unsigned char stat; int i, wait; int found = 0; struct bt_data *bt; bt = (struct bt_data *)arg; #ifdef UTEST printf("bt_intr "); #endif /* * First acknowlege the interrupt, Then if it's * not telling about a completed operation * just return. */ stat = inb(BT_INTR_PORT); if((stat & BT_STAT_MASK) == 0) { /* Shared interrupt */ return; } /* Mail Box out empty ? */ if (stat & BT_MBOA) { printf("bt%d: Available Free mbo post\n", bt->unit); /* Disable MBO available interrupt */ outb(BT_CMD_DATA_PORT, BT_MBO_INTR_EN); wait = 100000; /* 1 sec enough? */ for (i = wait; i; i--) { if (!(inb(BT_CTRL_STAT_PORT) & BT_CDF)) break; DELAY(10); } if (i == 0) { printf("bt%d: bt_intr, cmd/data port full\n", bt->unit); outb(BT_CTRL_STAT_PORT, BT_SRST); return; } outb(BT_CMD_DATA_PORT, 0x00); /* Disable */ wakeup((caddr_t)&bt->bt_mbx); outb(BT_CTRL_STAT_PORT, BT_IRST); return; } if (!(stat & BT_MBIF)) { outb(BT_CTRL_STAT_PORT, BT_IRST); return; } /* * If it IS then process the competed operation */ wmbx = &bt->bt_mbx; wmbi = wmbx->tmbi; AGAIN: while (wmbi->stat != BT_MBI_FREE) { ccb = bt_ccb_phys_kv(bt, (wmbi->ccb_addr)); if (!ccb) { wmbi->stat = BT_MBI_FREE; printf("bt: BAD CCB ADDR!\n"); continue; } found++; if ((stat = wmbi->stat) != BT_MBI_OK) { switch (stat) { case BT_MBI_ABORT: #ifdef UTEST if (bt_debug & BT_SHOWMISC) printf("abort "); #endif ccb->host_stat = BT_ABORTED; break; case BT_MBI_UNKNOWN: ccb = (struct bt_ccb *) 0; #ifdef UTEST if (bt_debug & BT_SHOWMISC) printf("unknown ccb for abort"); #endif break; case BT_MBI_ERROR: break; default: panic("Impossible mbxi status"); } #ifdef UTEST if ((bt_debug & BT_SHOWCMDS) && ccb) { u_char *cp; 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\n" ,wmbi->stat, wmbi); printf("addr = 0x%x\n", ccb); } #endif } wmbi->stat = BT_MBI_FREE; if (ccb) { untimeout(bt_timeout, (caddr_t)ccb); bt_done(bt, ccb); } /* Set the IN mail Box pointer for next */ bt_nextmbx(wmbi, wmbx, mbi); } if (!found) { for (i = 0; i < BT_MBX_SIZE; i++) { if (wmbi->stat != BT_MBI_FREE) { found++; break; } bt_nextmbx(wmbi, wmbx, mbi); } if (!found) { #ifdef DEBUG printf("bt%d: mbi at 0x%08x should be found, stat=%02x..resync\n", bt->unit, wmbi, stat); #endif } else { found = 0; goto AGAIN; } } wmbx->tmbi = wmbi; outb(BT_CTRL_STAT_PORT, BT_IRST); } /* * A ccb is put onto the free list. */ static void bt_free_ccb(bt, ccb, flags) struct bt_data *bt; struct bt_ccb *ccb; int flags; { unsigned int opri; opri = splbio(); ccb->next = bt->bt_ccb_free; bt->bt_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)&bt->bt_ccb_free); } splx(opri); } /* * Get a free ccb * * If there are none, see if we can allocate a new one. If so, put it in * the hash table too otherwise either return an error or sleep. */ static struct bt_ccb * bt_get_ccb(bt, flags) struct bt_data *bt; int flags; { unsigned opri; struct bt_ccb *ccbp; int hashnum; opri = splbio(); /* * If we can and have to, sleep waiting for one to come free * but only if we can't allocate a new one. */ while (!(ccbp = bt->bt_ccb_free)) { if (bt->numccbs < BT_CCB_MAX) { if (ccbp = (struct bt_ccb *) malloc(sizeof(struct bt_ccb), M_TEMP, M_NOWAIT)) { bzero(ccbp, sizeof(struct bt_ccb)); bt->numccbs++; ccbp->flags = CCB_ACTIVE; /* * put in the phystokv hash table * Never gets taken out. */ ccbp->hashkey = KVTOPHYS(ccbp); hashnum = CCB_HASH(ccbp->hashkey); ccbp->nexthash = bt->ccbhash[hashnum]; bt->ccbhash[hashnum] = ccbp; } else { printf("bt%d: Can't malloc CCB\n", bt->unit); } goto gottit; } else { if (!(flags & SCSI_NOSLEEP)) { tsleep((caddr_t)&bt->bt_ccb_free, PRIBIO, "btccb", 0); continue; } break; } } if (ccbp) { /* Get CCB from from free list */ bt->bt_ccb_free = ccbp->next; ccbp->flags = CCB_ACTIVE; } gottit: splx(opri); return (ccbp); } /* * given a physical address, find the ccb that * it corresponds to: */ static struct bt_ccb * bt_ccb_phys_kv(bt, ccb_phys) struct bt_data *bt; physaddr ccb_phys; { int hashnum = CCB_HASH(ccb_phys); struct bt_ccb *ccbp = bt->ccbhash[hashnum]; while (ccbp) { if (ccbp->hashkey == ccb_phys) break; ccbp = ccbp->nexthash; } return ccbp; } /* * Get a MBO and then Send it */ static BT_MBO * bt_send_mbo(bt, flags, cmd, ccb) struct bt_data *bt; int flags; int cmd; struct bt_ccb *ccb; { unsigned opri; BT_MBO *wmbo; /* Mail Box Out pointer */ struct bt_mbx *wmbx; /* Mail Box pointer specified unit */ int i, wait; wmbx = &bt->bt_mbx; opri = splbio(); /* Get the Target OUT mail Box pointer and move to Next */ wmbo = wmbx->tmbo; wmbx->tmbo = (wmbo == &(wmbx->mbo[BT_MBX_SIZE - 1]) ? &(wmbx->mbo[0]) : wmbo + 1); /* * Check the outmail box is free or not. * Note: Under the normal operation, it shuld NOT happen to wait. */ while (wmbo->cmd != BT_MBO_FREE) { wait = 100000; /* 1 sec enough? */ /* Enable MBO available interrupt */ outb(BT_CMD_DATA_PORT, BT_MBO_INTR_EN); for (i = wait; i; i--) { if (!(inb(BT_CTRL_STAT_PORT) & BT_CDF)) break; DELAY(10); } if (i == 0) { printf("bt%d: bt_send_mbo, cmd/data port full\n", bt->unit); outb(BT_CTRL_STAT_PORT, BT_SRST); return ((BT_MBO *) 0); } outb(BT_CMD_DATA_PORT, 0x01); /* Enable */ tsleep((caddr_t)wmbx, PRIBIO, "btsend", 0); /* XXX */ /*can't do this! */ /* May be servicing an int */ } /* Link CCB to the Mail Box */ wmbo->ccb_addr = KVTOPHYS(ccb); ccb->mbx = wmbo; wmbo->cmd = cmd; /* Send it! */ outb(BT_CMD_DATA_PORT, BT_START_SCSI); splx(opri); 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 */ static void bt_done(bt, ccb) struct bt_data *bt; struct bt_ccb *ccb; { struct scsi_sense_data *s1, *s2; struct scsi_xfer *xs = ccb->xfer; SC_DEBUG(xs->sc_link, SDEV_DB2, ("bt_done\n")); /* * Otherwise, put the results of the operation * into the xfer and call whoever started it */ if ((ccb->host_stat != BT_OK || ccb->target_stat != SCSI_OK) && (!(xs->flags & SCSI_ERR_OK))) { s1 = &(ccb->scsi_sense); s2 = &(xs->sense); if (ccb->host_stat) { switch (ccb->host_stat) { case BT_ABORTED: /* No response */ case BT_SEL_TIMEOUT: /* No response */ SC_DEBUG(xs->sc_link, SDEV_DB3, ("timeout reported back\n")); xs->error = XS_TIMEOUT; break; default: /* Other scsi protocol messes */ xs->error = XS_DRIVER_STUFFUP; SC_DEBUG(xs->sc_link, SDEV_DB3, ("unexpected host_stat: %x\n", ccb->host_stat)); } } else { switch (ccb->target_stat) { case 0x02: *s2 = *s1; xs->error = XS_SENSE; break; case 0x08: xs->error = XS_BUSY; break; default: SC_DEBUG(xs->sc_link, SDEV_DB3, ("unexpected target_stat: %x\n", ccb->target_stat)); xs->error = XS_DRIVER_STUFFUP; } } } else { /* All went correctly OR errors expected */ xs->resid = 0; } xs->flags |= ITSDONE; bt_free_ccb(bt, ccb, xs->flags); scsi_done(xs); } /* * Start the board, ready for normal operation */ int bt_init(bt) struct bt_data* bt; { unsigned char ad[4]; volatile int i, sts; struct bt_config conf; struct bt_ext_info info; struct bt_board_info binfo; /* * reset board, If it doesn't respond, assume * that it's not there.. good for the probe */ outb(BT_CTRL_STAT_PORT, BT_HRST | BT_SRST); DELAY(10000); for (i = BT_RESET_TIMEOUT; i; i--) { sts = inb(BT_CTRL_STAT_PORT); if (sts == (BT_IDLE | BT_INIT)) break; DELAY(1000); } if (i == 0) { #ifdef UTEST printf("bt_init: No answer from board\n"); #endif return (ENXIO); } DELAY(10000); /* * Displaying Board ID and Hardware Revision * 94/05/18 amurai@spec.co.jp */ i = bt_cmd(bt, 1, sizeof(binfo),0, &binfo,BT_GET_BOARD_INFO,sizeof(binfo)); if(i) return i; printf("bt%d: Bt%c%c%c%c/%c%d-", bt->unit, binfo.id[0], binfo.id[1], binfo.id[2], binfo.id[3], binfo.ver[0], (unsigned) binfo.ver[1] ); /* * Make sure board has a capability of 32bit addressing. * and Firmware also need a capability of 32bit addressing pointer * in Extended mailbox and ccb structure. * 94/05/18 amurai@spec.co.jp */ bt_cmd(bt, 1, sizeof(info),0,&info, BT_INQUIRE_EXTENDED,sizeof(info)); switch (info.bus_type) { case BT_BUS_TYPE_24bit: /* PC/AT 24 bit address bus */ printf("ISA(24bit) bus\n"); break; case BT_BUS_TYPE_32bit: /* EISA/VLB/PCI 32 bit bus */ printf("(32bit) bus\n"); break; case BT_BUS_TYPE_MCA: /* forget it right now */ printf("MCA bus architecture..."); printf("giving up\n"); return (ENXIO); break; default: printf("Unknown state..."); printf("giving up\n"); return (ENXIO); break; } if ( binfo.id[0] == '4' && binfo.id[1] == '4' && binfo.id[2] == '5' && binfo.id[3] == 'S' ) { printf("bt%d: Your card cannot DMA above 16MB boundary. Bounce buffering enabled.\n", bt->unit); bt->bt_bounce++; } else if ( binfo.id[0] == '5' ) { printf("bt%d: This driver is designed for using 32 bit addressing\n" "bt%d: mode firmware and EISA/PCI/VLB bus architectures\n" "bt%d: Bounce-buffering will be used (and is necessary)\n" "bt%d: if you have more than 16MBytes memory.\n", bt->unit, bt->unit, bt->unit, bt->unit); bt->bt_bounce++; } else if ( info.bus_type == BT_BUS_TYPE_24bit ) { printf("bt%d: Your board should report a 32bit bus architecture type..\n" "bt%d: The firmware on your board may have a problem with over\n" "bt%d: 16MBytes memory handling with this driver.\n", bt->unit, bt->unit, bt->unit); bt->bt_bounce++; } /* * Assume we have a board at this stage * setup dma channel from jumpers and save int * level */ printf("bt%d: reading board settings, ", bt->unit); bt_cmd(bt, 0, sizeof(conf), 0, &conf, BT_CONF_GET); switch (conf.chan) { case BUSDMA: bt->bt_dma = -1; break; case CHAN0: outb(0x0b, 0x0c); outb(0x0a, 0x00); bt->bt_dma = 0; break; case CHAN5: outb(0xd6, 0xc1); outb(0xd4, 0x01); bt->bt_dma = 5; break; case CHAN6: outb(0xd6, 0xc2); outb(0xd4, 0x02); bt->bt_dma = 6; break; case CHAN7: outb(0xd6, 0xc3); outb(0xd4, 0x03); bt->bt_dma = 7; break; default: printf("illegal dma setting %x\n", conf.chan); return (EIO); } if (bt->bt_dma == -1) printf("busmastering, "); else printf("dma=%d, ", bt->bt_dma); switch (conf.intr) { case INT9: bt->bt_int = 9; break; case INT10: bt->bt_int = 10; break; case INT11: bt->bt_int = 11; break; case INT12: bt->bt_int = 12; break; case INT14: bt->bt_int = 14; break; case INT15: bt->bt_int = 15; break; default: printf("illegal int setting\n"); return (EIO); } printf("int=%d\n", bt->bt_int); /* who are we on the scsi bus */ bt->bt_scsi_dev = conf.scsi_dev; /* * Initialize mail box */ *((physaddr *) ad) = KVTOPHYS(&bt->bt_mbx); bt_cmd(bt, 5, 0, 0, 0, BT_MBX_INIT_EXTENDED ,BT_MBX_SIZE ,ad[0] ,ad[1] ,ad[2] ,ad[3]); /* * Set Pointer chain null for just in case * Link the ccb's into a free-list W/O mbox * Initialize mail box status to free */ if (bt->bt_ccb_free != (struct bt_ccb *) 0) { printf("bt%d: bt_ccb_free is NOT initialized but init here\n", bt->unit); bt->bt_ccb_free = (struct bt_ccb *) 0; } for (i = 0; i < BT_MBX_SIZE; i++) { bt->bt_mbx.mbo[i].cmd = BT_MBO_FREE; bt->bt_mbx.mbi[i].stat = BT_MBI_FREE; } /* * Set up initial mail box for round-robin operation. */ bt->bt_mbx.tmbo = &bt->bt_mbx.mbo[0]; bt->bt_mbx.tmbi = &bt->bt_mbx.mbi[0]; bt_inquire_setup_information(bt, &info); /* * Note that we are going and return (to probe) */ return 0; } static void bt_inquire_setup_information(bt, info) struct bt_data* bt; struct bt_ext_info *info; { struct bt_setup setup; struct bt_sync_value sync; char dummy[8]; char sub_ver[3]; struct bt_boardID bID; int i; /* Inquire Installed Devices */ bzero( &dummy[0], sizeof(dummy) ); bt_cmd(bt, 0, sizeof(dummy), 100, &dummy[0], BT_DEV_GET); /* * If board has a capbility of Syncrhonouse mode, * Get a SCSI Synchronous value */ if (info->s.force) { /* Assume fast sync capability */ info->s.sync = 1; /* It's appear at 4.25? version */ info->s.maxsync = 1; } if ( info->s.sync ) { bt_cmd(bt, 1, sizeof(sync), 100, &sync,BT_GET_SYNC_VALUE,sizeof(sync)); } /* * Inquire Board ID to board for firmware version */ bt_cmd(bt, 0, sizeof(bID), 0, &bID, BT_INQUIRE); bt_cmd(bt, 0, 1, 0, &sub_ver[0], BT_INQUIRE_REV_THIRD ); i = ((int)(bID.firm_revision-'0')) * 10 + (int)(bID.firm_version-'0'); if ( i >= 33 ) { bt_cmd(bt, 0, 1, 0, &sub_ver[1], BT_INQUIRE_REV_FOURTH ); } else { /* * Below rev 3.3 firmware has a problem for issuing * the BT_INQUIRE_REV_FOURTH command. */ sub_ver[1]='\0'; } sub_ver[2]='\0'; if (sub_ver[1]==' ') sub_ver[1]='\0'; printf("bt%d: version %c.%c%s, ", bt->unit, bID.firm_revision, bID.firm_version, sub_ver ); /* * Obtain setup information from board. */ bt_cmd(bt, 1, sizeof(setup), 0, &setup, BT_SETUP_GET, sizeof(setup)); if (setup.sync_neg && info->s.sync ) { if ( info->s.maxsync ) { printf("fast sync, "); /* Max 10MB/s */ } else { printf("sync, "); /* Max 5MB/s */ } } else { if ( info->s.sync ) { printf("async, "); /* Never try by board */ } else { printf("async only, "); /* Doesn't has a capability on board */ } } if (setup.parity) { printf("parity, "); } else { printf("no parity, "); } printf("%d mbxs, %d ccbs\n", setup.num_mbx, BT_CCB_MAX); /* * Displayi SCSI negotiation value by each target. * amurai@spec.co.jp */ for (i = 0; i < 8; i++) { if (!setup.sync[i].valid ) continue; if ( (!setup.sync[i].offset && !setup.sync[i].period) || !info->s.sync ) { printf("bt%d: targ %d async\n", bt->unit, i); } else { printf("bt%d: targ %d sync rate=%2d.%02dMB/s(%dns), offset=%02d\n", bt->unit, i, 100 / sync.value[i], (100 % sync.value[i]) * 100 / sync.value[i], sync.value[i] * 10, setup.sync[i].offset ); } } /* * Enable round-robin scheme - appeared at firmware rev. 3.31 * Below rev 3.XX firmware has a problem for issuing * BT_ROUND_ROBIN command amurai@spec.co.jp */ if ( bID.firm_revision >= '3' ) { printf("bt%d: Using Strict Round robin scheme\n", bt->unit); bt_cmd(bt, 1, 0, 0, 0, BT_ROUND_ROBIN, BT_STRICT_ROUND_ROBIN); } else { printf("bt%d: Not using Strict Round robin scheme\n", bt->unit); } } #ifndef min #define min(x,y) (x < y ? x : y) #endif /* min */ static void btminphys(bp) struct buf *bp; { if (bp->b_bcount > ((BT_NSEG - 1) * PAGESIZ)) { bp->b_bcount = ((BT_NSEG - 1) * PAGESIZ); } } /* * start a scsi operation given the command and the data address. Also needs * the unit, target and lu. */ static int32_t bt_scsi_cmd(xs) struct scsi_xfer *xs; { struct bt_ccb *ccb; struct bt_scat_gath *sg; int seg; /* scatter gather seg being worked on */ int thiskv; physaddr thisphys, nextphys; int bytes_this_seg, bytes_this_page, datalen, flags; struct bt_data *bt; bt = (struct bt_data *)xs->sc_link->adapter_softc; SC_DEBUG(xs->sc_link, SDEV_DB2, ("bt_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 (flags & ITSDONE) { printf("bt%d: Already done?\n", bt->unit); xs->flags &= ~ITSDONE; } if (!(flags & INUSE)) { printf("bt%d: Not in use?\n", bt->unit); xs->flags |= INUSE; } if (!(ccb = bt_get_ccb(bt, flags))) { xs->error = XS_DRIVER_STUFFUP; return (TRY_AGAIN_LATER); } SC_DEBUG(xs->sc_link, SDEV_DB3, ("start ccb(%p)\n", ccb)); /* * Put all the arguments for the xfer in the ccb */ ccb->xfer = xs; if (flags & SCSI_RESET) { ccb->opcode = BT_RESET_CCB; } else { /* can't use S/G if zero length */ ccb->opcode = (xs->datalen ? BT_INIT_SCAT_GATH_CCB : BT_INITIATOR_CCB); } ccb->target = xs->sc_link->target; ccb->data_out = 0; ccb->data_in = 0; ccb->lun = xs->sc_link->lun; ccb->scsi_cmd_length = xs->cmdlen; ccb->sense_ptr = KVTOPHYS(&(ccb->scsi_sense)); ccb->req_sense_length = sizeof(ccb->scsi_sense); if ((xs->datalen) && (!(flags & SCSI_RESET))) { /* can use S/G only if not zero length */ ccb->data_addr = KVTOPHYS(ccb->scat_gath); 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 < BT_NSEG)) { sg->seg_addr = (physaddr) iovp->iov_base; xs->datalen += sg->seg_len = iovp->iov_len; SC_DEBUGN(xs->sc_link, SDEV_DB4, ("(0x%x@0x%x)" ,iovp->iov_len, iovp->iov_base)); sg++; iovp++; seg++; datalen--; } } else #endif /* TFS */ { /* * Set up the scatter gather block */ SC_DEBUG(xs->sc_link, SDEV_DB4, ("%ld @%p:- ", xs->datalen, xs->data)); datalen = xs->datalen; thiskv = (int) xs->data; thisphys = KVTOPHYS(thiskv); while ((datalen) && (seg < BT_NSEG)) { bytes_this_seg = 0; /* put in the base address */ sg->seg_addr = thisphys; SC_DEBUGN(xs->sc_link, SDEV_DB4, ("0x%lx", thisphys)); /* do it at least once */ nextphys = thisphys; while ((datalen) && (thisphys == nextphys)) /* * This page is contiguous (physically) with * the the last, just extend the length */ { /* how far to the end of the page */ nextphys = (thisphys & (~(PAGESIZ - 1))) + PAGESIZ; bytes_this_page = nextphys - thisphys; /**** or the data ****/ bytes_this_page = min(bytes_this_page ,datalen); bytes_this_seg += bytes_this_page; datalen -= bytes_this_page; /* get more ready for the next page */ thiskv = (thiskv & (~(PAGESIZ - 1))) + PAGESIZ; if (datalen) thisphys = KVTOPHYS(thiskv); } /* * next page isn't contiguous, finish the seg */ SC_DEBUGN(xs->sc_link, SDEV_DB4, ("(0x%x)", bytes_this_seg)); sg->seg_len = bytes_this_seg; sg++; seg++; } } /* end of iov/kv decision */ ccb->data_length = seg * sizeof(struct bt_scat_gath); SC_DEBUGN(xs->sc_link, SDEV_DB4, ("\n")); if (datalen) { /* * there's still data, must have run out of segs! */ printf("bt%d: bt_scsi_cmd, more than %d DMA segs\n", bt->unit, BT_NSEG); xs->error = XS_DRIVER_STUFFUP; bt_free_ccb(bt, ccb, flags); return (HAD_ERROR); } } else { /* No data xfer, use non S/G values */ ccb->data_addr = (physaddr) 0; ccb->data_length = 0; } ccb->link_id = 0; ccb->link_addr = (physaddr) 0; /* * 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 (bt_send_mbo(bt, flags, BT_MBO_START, ccb) == (BT_MBO *) 0) { xs->error = XS_DRIVER_STUFFUP; bt_free_ccb(bt, ccb, flags); return (TRY_AGAIN_LATER); } /* * Usually return SUCCESSFULLY QUEUED */ SC_DEBUG(xs->sc_link, SDEV_DB3, ("cmd_sent\n")); if (!(flags & SCSI_NOMASK)) { timeout(bt_timeout, (caddr_t)ccb, (xs->timeout * hz) / 1000); return (SUCCESSFULLY_QUEUED); } /* * If we can't use interrupts, poll on completion */ return (bt_poll(bt, xs, ccb)); } /* * Poll a particular unit, looking for a particular xs */ static int bt_poll(bt, xs, ccb) struct bt_data* bt; struct scsi_xfer *xs; struct bt_ccb *ccb; { 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(BT_INTR_PORT); if (stat & BT_ANY_INTR) { bt_intr((void *)bt); } if (xs->flags & ITSDONE) { break; } DELAY(1000); /* only happens in boot so ok */ count--; } if (count == 0) { /* * 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. */ bt_timeout(ccb); /* * because we are polling, take out the timeout entry * bt_timeout made */ untimeout(bt_timeout, (caddr_t)ccb); count = 2000; while (count) { /* * Once again, wait for the int bit */ stat = inb(BT_INTR_PORT); if (stat & BT_ANY_INTR) { bt_intr((void *)bt); } if (xs->flags & ITSDONE) { break; } DELAY(1000); /* only happens in boot so ok */ count--; } if (count == 0) { /* * We timed out again... This is bad. Notice that * this time there is no clock queue entry to remove. */ bt_timeout(ccb); } } if (xs->error) return (HAD_ERROR); return (COMPLETE); } static void bt_timeout(void *arg1) { struct bt_ccb * ccb = (struct bt_ccb *)arg1; int unit; struct bt_data *bt; int s = splbio(); /* * A timeout routine in kernel DONOT unlink * Entry chains when time outed....So infinity Loop.. * 94/04/20 amurai@spec.co.jp */ untimeout(bt_timeout, (caddr_t)ccb); unit = ccb->xfer->sc_link->adapter_unit; bt = btdata[unit]; #ifdef UTEST bt_print_active_ccbs(bt); #endif /* * If the ccb's mbx is not free, then the board has gone Far East? */ if (bt_ccb_phys_kv(bt, ccb->mbx->ccb_addr) == ccb && ccb->mbx->cmd != BT_MBO_FREE) { printf("bt%d: not taking commands!\n", unit); Debugger("bt742a"); } /* * 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("bt%d: Abort Operation has timed out\n", unit); ccb->xfer->retries = 0; /* I MEAN IT ! */ ccb->host_stat = BT_ABORTED; bt_done(bt, ccb); } else { /* abort the operation that has timed out */ printf("bt%d: Try to abort\n", unit); bt_send_mbo(bt, ~SCSI_NOMASK, BT_MBO_ABORT, ccb); /* 2 secs for the abort */ ccb->flags = CCB_ABORTED; timeout(bt_timeout, (caddr_t)ccb, 2 * hz); } splx(s); } #ifdef UTEST static void bt_print_ccb(ccb) struct bt_ccb *ccb; { printf("ccb:%x op:%x cmdlen:%d senlen:%d\n" ,ccb ,ccb->opcode ,ccb->scsi_cmd_length ,ccb->req_sense_length); printf(" datlen:%d hstat:%x tstat:%x flags:%x\n" ,ccb->data_length ,ccb->host_stat ,ccb->target_stat ,ccb->flags); } static void bt_print_active_ccbs(bt) struct bt_data *bt; { struct bt_ccb *ccb; int i = 0; while (i < CCB_HASH_SIZE) { ccb = bt->ccbhash[i]; while (ccb) { if (ccb->flags != CCB_FREE) bt_print_ccb(ccb); ccb = ccb->nexthash; } i++; } } #endif /*UTEST */