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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [drivers/] [scsi/] [eata_pio.c] - Rev 1765
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/************************************************************ * * * Linux EATA SCSI PIO driver * * * * based on the CAM document CAM/89-004 rev. 2.0c, * * DPT's driver kit, some internal documents and source, * * and several other Linux scsi drivers and kernel docs. * * * * The driver currently: * * -supports all EATA-PIO boards * * -only supports DASD devices * * * * (c)1993-96 Michael Neuffer, Alfred Arnold * * neuffer@goofy.zdv.uni-mainz.de * * a.arnold@kfa-juelich.de * * * * This program is free software; you can redistribute it * * and/or modify it under the terms of the GNU General * * Public License as published by the Free Software * * Foundation; either version 2 of the License, or * * (at your option) any later version. * * * * This program is distributed in the hope that it will be * * useful, but WITHOUT ANY WARRANTY; without even the * * implied warranty of MERCHANTABILITY or FITNESS FOR A * * PARTICULAR PURPOSE. See the GNU General Public License * * for more details. * * * * You should have received a copy of the GNU General * * Public License along with this kernel; if not, write to * * the Free Software Foundation, Inc., 675 Mass Ave, * * Cambridge, MA 02139, USA. * * * ************************************************************ * last change: 96/07/16 OS: Linux 2.0.8 * ************************************************************/ /* Look in eata_pio.h for configuration information */ #include <linux/module.h> #include <linux/kernel.h> #include <linux/sched.h> #include <linux/string.h> #include <linux/ioport.h> #include <linux/malloc.h> #include <linux/in.h> #include <linux/bios32.h> #include <linux/pci.h> #include <linux/proc_fs.h> #include <asm/io.h> #include "eata_pio.h" #include "eata_dma_proc.h" #include "scsi.h" #include "sd.h" #include <linux/stat.h> #include <linux/config.h> /* for CONFIG_PCI */ struct proc_dir_entry proc_scsi_eata_pio = { PROC_SCSI_EATA_PIO, 9, "eata_pio", S_IFDIR | S_IRUGO | S_IXUGO, 2 }; static uint ISAbases[MAXISA] = {0x1F0, 0x170, 0x330, 0x230}; static uint ISAirqs[MAXISA] = {14,12,15,11}; static unchar EISAbases[] = {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}; static uint registered_HBAs = 0; static struct Scsi_Host *last_HBA = NULL; static struct Scsi_Host *first_HBA = NULL; static unchar reg_IRQ[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; static unchar reg_IRQL[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; static ulong int_counter = 0; static ulong queue_counter = 0; #include "eata_pio_proc.c" #ifdef MODULE int eata_pio_release(struct Scsi_Host *sh) { if (sh->irq && reg_IRQ[sh->irq] == 1) free_irq(sh->irq, NULL); else reg_IRQ[sh->irq]--; if (SD(sh)->channel == 0) { if (sh->io_port && sh->n_io_port) release_region(sh->io_port, sh->n_io_port); } return(TRUE); } #endif void IncStat(Scsi_Pointer *SCp, uint Increment) { SCp->ptr+=Increment; if ((SCp->this_residual-=Increment)==0) { if ((--SCp->buffers_residual)==0) SCp->Status=FALSE; else { SCp->buffer++; SCp->ptr=SCp->buffer->address; SCp->this_residual=SCp->buffer->length; } } } void eata_pio_int_handler(int irq, void *dev_id, struct pt_regs * regs) { uint eata_stat = 0xfffff; Scsi_Cmnd *cmd; hostdata *hd; struct eata_ccb *cp; uint base; ulong flags; uint x,z; struct Scsi_Host *sh; ushort zwickel=0; unchar stat,odd; save_flags(flags); cli(); for (x = 1, sh = first_HBA; x <= registered_HBAs; x++, sh = SD(sh)->prev) { if (sh->irq != irq) continue; if (inb((uint)sh->base + HA_RSTATUS) & HA_SBUSY) continue; int_counter++; hd=SD(sh); cp = &hd->ccb[0]; cmd = cp->cmd; base = (uint) cmd->host->base; do { stat=inb(base+HA_RSTATUS); if (stat&HA_SDRQ) if (cp->DataIn) { z=256; odd=FALSE; while ((cmd->SCp.Status)&&((z>0)||(odd))) { if (odd) { *(cmd->SCp.ptr)=zwickel>>8; IncStat(&cmd->SCp,1); odd=FALSE; } x=min(z,cmd->SCp.this_residual/2); insw(base+HA_RDATA,cmd->SCp.ptr,x); z-=x; IncStat(&cmd->SCp,2*x); if ((z>0)&&(cmd->SCp.this_residual==1)) { zwickel=inw(base+HA_RDATA); *(cmd->SCp.ptr)=zwickel&0xff; IncStat(&cmd->SCp,1); z--; odd=TRUE; } } while (z>0) { zwickel=inw(base+HA_RDATA); z--; } } else /* cp->DataOut */ { odd=FALSE; z=256; while ((cmd->SCp.Status)&&((z>0)||(odd))) { if (odd) { zwickel+=*(cmd->SCp.ptr)<<8; IncStat(&cmd->SCp,1); outw(zwickel,base+HA_RDATA); z--; odd=FALSE; } x=min(z,cmd->SCp.this_residual/2); outsw(base+HA_RDATA,cmd->SCp.ptr,x); z-=x; IncStat(&cmd->SCp,2*x); if ((z>0)&&(cmd->SCp.this_residual==1)) { zwickel=*(cmd->SCp.ptr); zwickel&=0xff; IncStat(&cmd->SCp,1); odd=TRUE; } } while (z>0||odd) { outw(zwickel,base+HA_RDATA); z--; odd=FALSE; } } } while ((stat&HA_SDRQ)||((stat&HA_SMORE)&&hd->moresupport)); /* terminate handler if HBA goes busy again, i.e. transfers * more data */ if (stat&HA_SBUSY) break; /* OK, this is quite stupid, but I haven't found any correct * way to get HBA&SCSI status so far */ if (!(inb(base+HA_RSTATUS)&HA_SERROR)) { cmd->result=(DID_OK<<16); hd->devflags|=(1<<cp->cp_id); } else if (hd->devflags&1<<cp->cp_id) cmd->result=(DID_OK<<16)+0x02; else cmd->result=(DID_NO_CONNECT<<16); if (cp->status == LOCKED) { cp->status = FREE; eata_stat = inb(base + HA_RSTATUS); printk(KERN_NOTICE "eata_pio: int_handler, freeing locked " "queueslot\n"); DBG(DBG_INTR&&DBG_DELAY,DELAY(1)); restore_flags(flags); return; } #if DBG_INTR2 if (stat != 0x50) printk(KERN_DEBUG "stat: %#.2x, result: %#.8x\n", stat, cmd->result); DBG(DBG_INTR&&DBG_DELAY,DELAY(1)); #endif cp->status = FREE; /* now we can release the slot */ restore_flags(flags); cmd->scsi_done(cmd); save_flags(flags); cli(); } restore_flags(flags); return; } inline uint eata_pio_send_command(uint base, unchar command) { uint loop = HZ/2; while (inb(base + HA_RSTATUS) & HA_SBUSY) if (--loop == 0) return(TRUE); /* Enable interrupts for HBA. It is not the best way to do it at this * place, but I hope that it doesn't interfere with the IDE driver * initialization this way */ outb(HA_CTRL_8HEADS,base+HA_CTRLREG); outb(command, base + HA_WCOMMAND); return(FALSE); } int eata_pio_queue(Scsi_Cmnd * cmd, void (*done) (Scsi_Cmnd *)) { uint x, y; long flags; uint base; hostdata *hd; struct Scsi_Host *sh; struct eata_ccb *cp; save_flags(flags); cli(); queue_counter++; hd = HD(cmd); sh = cmd->host; base = (uint) sh->base; /* use only slot 0, as 2001 can handle only one cmd at a time */ y = x = 0; if (hd->ccb[y].status!=FREE) { DBG(DBG_QUEUE, printk(KERN_EMERG "can_queue %d, x %d, y %d\n", sh->can_queue,x,y)); #if DEBUG_EATA panic(KERN_EMERG "eata_pio: run out of queue slots cmdno:%ld " "intrno: %ld\n", queue_counter, int_counter); #else panic(KERN_EMERG "eata_pio: run out of queue slots....\n"); #endif } cp = &hd->ccb[y]; memset(cp, 0, sizeof(struct eata_ccb)); memset(cmd->sense_buffer, 0, sizeof(cmd->sense_buffer)); cp->status = USED; /* claim free slot */ DBG(DBG_QUEUE, printk(KERN_DEBUG "eata_pio_queue pid %ld, target: %x, lun:" " %x, y %d\n", cmd->pid, cmd->target, cmd->lun, y)); DBG(DBG_QUEUE && DBG_DELAY, DELAY(1)); cmd->scsi_done = (void *)done; switch (cmd->cmnd[0]) { case CHANGE_DEFINITION: case COMPARE: case COPY: case COPY_VERIFY: case LOG_SELECT: case MODE_SELECT: case MODE_SELECT_10: case SEND_DIAGNOSTIC: case WRITE_BUFFER: case FORMAT_UNIT: case REASSIGN_BLOCKS: case RESERVE: case SEARCH_EQUAL: case SEARCH_HIGH: case SEARCH_LOW: case WRITE_6: case WRITE_10: case WRITE_VERIFY: case UPDATE_BLOCK: case WRITE_LONG: case WRITE_SAME: case SEARCH_HIGH_12: case SEARCH_EQUAL_12: case SEARCH_LOW_12: case WRITE_12: case WRITE_VERIFY_12: case SET_WINDOW: case MEDIUM_SCAN: case SEND_VOLUME_TAG: case 0xea: /* alternate number for WRITE LONG */ cp->DataOut = TRUE; /* Output mode */ break; case TEST_UNIT_READY: default: cp->DataIn = TRUE; /* Input mode */ } cp->Interpret = (cmd->target == hd->hostid); cp->cp_datalen = htonl((ulong)cmd->request_bufflen); cp->Auto_Req_Sen = FALSE; cp->cp_reqDMA = htonl(0); cp->reqlen = 0; cp->cp_id = cmd->target; cp->cp_lun = cmd->lun; cp->cp_dispri = FALSE; cp->cp_identify = TRUE; memcpy(cp->cp_cdb, cmd->cmnd, COMMAND_SIZE(*cmd->cmnd)); cp->cp_statDMA = htonl(0); cp->cp_viraddr = cp; cp->cmd = cmd; cmd->host_scribble = (char *)&hd->ccb[y]; if (cmd->use_sg == 0) { cmd->SCp.buffers_residual=1; cmd->SCp.ptr = cmd->request_buffer; cmd->SCp.this_residual = cmd->request_bufflen; cmd->SCp.buffer = NULL; } else { cmd->SCp.buffer = cmd->request_buffer; cmd->SCp.buffers_residual = cmd->use_sg; cmd->SCp.ptr = cmd->SCp.buffer->address; cmd->SCp.this_residual = cmd->SCp.buffer->length; } cmd->SCp.Status = (cmd->SCp.this_residual != 0); /* TRUE as long as bytes * are to transfer */ if (eata_pio_send_command(base, EATA_CMD_PIO_SEND_CP)) { cmd->result = DID_BUS_BUSY << 16; printk(KERN_NOTICE "eata_pio_queue target %d, pid %ld, HBA busy, " "returning DID_BUS_BUSY, done.\n", cmd->target, cmd->pid); done(cmd); cp->status = FREE; restore_flags(flags); return (0); } while (!(inb(base + HA_RSTATUS) & HA_SDRQ)); outsw(base + HA_RDATA, cp, hd->cplen); outb(EATA_CMD_PIO_TRUNC, base + HA_WCOMMAND); for (x = 0; x < hd->cppadlen; x++) outw(0, base + HA_RDATA); DBG(DBG_QUEUE,printk(KERN_DEBUG "Queued base %#.4lx pid: %ld target: %x " "lun: %x slot %d irq %d\n", (long)sh->base, cmd->pid, cmd->target, cmd->lun, y, sh->irq)); DBG(DBG_QUEUE && DBG_DELAY, DELAY(1)); restore_flags(flags); return (0); } int eata_pio_abort(Scsi_Cmnd * cmd) { ulong flags; uint loop = HZ; save_flags(flags); cli(); DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_abort called pid: %ld " "target: %x lun: %x reason %x\n", cmd->pid, cmd->target, cmd->lun, cmd->abort_reason)); DBG(DBG_ABNORM && DBG_DELAY, DELAY(1)); while (inb((uint)(cmd->host->base) + HA_RAUXSTAT) & HA_ABUSY) if (--loop == 0) { printk(KERN_WARNING "eata_pio: abort, timeout error.\n"); restore_flags(flags); DBG(DBG_ABNORM && DBG_DELAY, DELAY(1)); return (SCSI_ABORT_ERROR); } if (CD(cmd)->status == FREE) { DBG(DBG_ABNORM, printk(KERN_WARNING "Returning: SCSI_ABORT_NOT_RUNNING\n")); restore_flags(flags); return (SCSI_ABORT_NOT_RUNNING); } if (CD(cmd)->status == USED) { DBG(DBG_ABNORM, printk(KERN_WARNING "Returning: SCSI_ABORT_BUSY\n")); restore_flags(flags); return (SCSI_ABORT_BUSY); /* SNOOZE */ } if (CD(cmd)->status == RESET) { restore_flags(flags); printk(KERN_WARNING "eata_pio: abort, command reset error.\n"); DBG(DBG_ABNORM && DBG_DELAY, DELAY(1)); return (SCSI_ABORT_ERROR); } if (CD(cmd)->status == LOCKED) { restore_flags(flags); DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio: abort, queue slot " "locked.\n")); DBG(DBG_ABNORM && DBG_DELAY, DELAY(1)); return (SCSI_ABORT_NOT_RUNNING); } restore_flags(flags); panic("eata_pio: abort: invalid slot status\n"); } int eata_pio_reset(Scsi_Cmnd * cmd, unsigned int dummy) { uint x, time, limit = 0; ulong flags; unchar success = FALSE; Scsi_Cmnd *sp; save_flags(flags); cli(); DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset called pid:%ld target:" " %x lun: %x reason %x\n", cmd->pid, cmd->target, cmd->lun, cmd->abort_reason)); if (HD(cmd)->state == RESET) { printk(KERN_WARNING "eata_pio_reset: exit, already in reset.\n"); restore_flags(flags); DBG(DBG_ABNORM && DBG_DELAY, DELAY(1)); return (SCSI_RESET_ERROR); } /* force all slots to be free */ for (x = 0; x < cmd->host->can_queue; x++) { if (HD(cmd)->ccb[x].status == FREE) continue; sp = HD(cmd)->ccb[x].cmd; HD(cmd)->ccb[x].status = RESET; printk(KERN_WARNING "eata_pio_reset: slot %d in reset, pid %ld.\n", x, sp->pid); DBG(DBG_ABNORM && DBG_DELAY, DELAY(1)); if (sp == NULL) panic("eata_pio_reset: slot %d, sp==NULL.\n", x); DBG(DBG_ABNORM && DBG_DELAY, DELAY(1)); } /* hard reset the HBA */ outb(EATA_CMD_RESET, (uint) cmd->host->base+HA_WCOMMAND); DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: board reset done.\n")); HD(cmd)->state = RESET; time = jiffies; while (jiffies < (time + (3 * HZ)) && limit++ < 10000000); DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: interrupts disabled, " "loops %d.\n", limit)); DBG(DBG_ABNORM && DBG_DELAY, DELAY(1)); for (x = 0; x < cmd->host->can_queue; x++) { /* Skip slots already set free by interrupt */ if (HD(cmd)->ccb[x].status != RESET) continue; sp = HD(cmd)->ccb[x].cmd; sp->result = DID_RESET << 16; /* This mailbox is terminated */ printk(KERN_WARNING "eata_pio_reset: reset ccb %d.\n",x); HD(cmd)->ccb[x].status = FREE; restore_flags(flags); sp->scsi_done(sp); cli(); } HD(cmd)->state = FALSE; restore_flags(flags); if (success) { /* hmmm... */ DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: exit, success.\n")); DBG(DBG_ABNORM && DBG_DELAY, DELAY(1)); return (SCSI_RESET_SUCCESS); } else { DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: exit, wakeup.\n")); DBG(DBG_ABNORM && DBG_DELAY, DELAY(1)); return (SCSI_RESET_PUNT); } } char * get_pio_board_data(ulong base, uint irq, uint id, ulong cplen, ushort cppadlen) { struct eata_ccb cp; static char buff[256]; int z; memset(&cp, 0, sizeof(struct eata_ccb)); memset(buff, 0, sizeof(buff)); cp.DataIn = TRUE; cp.Interpret = TRUE; /* Interpret command */ cp.cp_datalen = htonl(254); cp.cp_dataDMA = htonl(0); cp.cp_id = id; cp.cp_lun = 0; cp.cp_cdb[0] = INQUIRY; cp.cp_cdb[1] = 0; cp.cp_cdb[2] = 0; cp.cp_cdb[3] = 0; cp.cp_cdb[4] = 254; cp.cp_cdb[5] = 0; if (eata_pio_send_command((uint) base, EATA_CMD_PIO_SEND_CP)) return (NULL); while (!(inb(base + HA_RSTATUS) & HA_SDRQ)); outsw(base + HA_RDATA, &cp, cplen); outb(EATA_CMD_PIO_TRUNC, base + HA_WCOMMAND); for (z = 0; z < cppadlen; z++) outw(0, base + HA_RDATA); while (inb(base + HA_RSTATUS) & HA_SBUSY); if (inb(base + HA_RSTATUS) & HA_SERROR) return (NULL); else if (!(inb(base + HA_RSTATUS) & HA_SDRQ)) return (NULL); else { insw(base+HA_RDATA, &buff, 127); while (inb(base + HA_RSTATUS)&HA_SDRQ) inw(base + HA_RDATA); return (buff); } } int get_pio_conf_PIO(u32 base, struct get_conf *buf) { ulong loop = HZ/2; int z; ushort *p; if(check_region(base, 9)) return (FALSE); memset(buf, 0, sizeof(struct get_conf)); while (inb(base + HA_RSTATUS) & HA_SBUSY) if (--loop == 0) return (FALSE); DBG(DBG_PIO && DBG_PROBE, printk(KERN_DEBUG "Issuing PIO READ CONFIG to HBA at %#x\n", base)); eata_pio_send_command(base, EATA_CMD_PIO_READ_CONFIG); loop = HZ/2; for (p = (ushort *) buf; (long)p <= ((long)buf + (sizeof(struct get_conf) / 2)); p++) { while (!(inb(base + HA_RSTATUS) & HA_SDRQ)) if (--loop == 0) return (FALSE); loop = HZ/2; *p = inw(base + HA_RDATA); } if (!(inb(base + HA_RSTATUS) & HA_SERROR)) { /* Error ? */ if (htonl(EATA_SIGNATURE) == buf->signature) { DBG(DBG_PIO&&DBG_PROBE, printk(KERN_NOTICE "EATA Controller found " "at %#4x EATA Level: %x\n", base, (uint) (buf->version))); while (inb(base + HA_RSTATUS) & HA_SDRQ) inw(base + HA_RDATA); if(ALLOW_DMA_BOARDS == FALSE) { for (z = 0; z < MAXISA; z++) if (base == ISAbases[z]) { buf->IRQ = ISAirqs[z]; break; } } return (TRUE); } } else { DBG(DBG_PROBE, printk("eata_dma: get_conf_PIO, error during transfer " "for HBA at %x\n", base)); } return (FALSE); } void print_pio_config(struct get_conf *gc) { printk("Please check values: (read config data)\n"); printk("LEN: %d ver:%d OCS:%d TAR:%d TRNXFR:%d MORES:%d\n", (uint) ntohl(gc->len), gc->version, gc->OCS_enabled, gc->TAR_support, gc->TRNXFR, gc->MORE_support); printk("HAAV:%d SCSIID0:%d ID1:%d ID2:%d QUEUE:%d SG:%d SEC:%d\n", gc->HAA_valid, gc->scsi_id[3], gc->scsi_id[2], gc->scsi_id[1], ntohs(gc->queuesiz), ntohs(gc->SGsiz), gc->SECOND); printk("IRQ:%d IRQT:%d FORCADR:%d MCH:%d RIDQ:%d\n", gc->IRQ, gc->IRQ_TR, gc->FORCADR, gc->MAX_CHAN, gc->ID_qest); DBG(DPT_DEBUG, DELAY(14)); } static uint print_selftest(uint base) { unchar buffer[512]; #ifdef VERBOSE_SETUP int z; #endif printk("eata_pio: executing controller self test & setup...\n"); while (inb(base + HA_RSTATUS) & HA_SBUSY); outb(EATA_CMD_PIO_SETUPTEST, base + HA_WCOMMAND); do { while (inb(base + HA_RSTATUS) & HA_SBUSY) /* nothing */ ; if (inb(base + HA_RSTATUS) & HA_SDRQ) { insw(base + HA_RDATA, &buffer, 256); #ifdef VERBOSE_SETUP /* no beeps please... */ for (z = 0; z < 511 && buffer[z]; z++) if (buffer[z] != 7) printk("%c", buffer[z]); #endif } } while (inb(base+HA_RSTATUS) & (HA_SBUSY|HA_SDRQ)); return (!(inb(base+HA_RSTATUS) & HA_SERROR)); } int register_pio_HBA(long base, struct get_conf *gc, Scsi_Host_Template * tpnt) { ulong size = 0; char *buff; ulong cplen; ushort cppadlen; struct Scsi_Host *sh; hostdata *hd; DBG(DBG_REGISTER, print_pio_config(gc)); if (gc->DMA_support == TRUE) { printk("HBA at %#.4lx supports DMA. Please use EATA-DMA driver.\n",base); if(ALLOW_DMA_BOARDS == FALSE) return (FALSE); } if ((buff = get_pio_board_data((uint)base, gc->IRQ, gc->scsi_id[3], cplen =(htonl(gc->cplen )+1)/2, cppadlen=(htons(gc->cppadlen)+1)/2)) == NULL) { printk("HBA at %#lx didn't react on INQUIRY. Sorry.\n", (ulong) base); return (FALSE); } if (print_selftest(base) == FALSE && ALLOW_DMA_BOARDS == FALSE) { printk("HBA at %#lx failed while performing self test & setup.\n", (ulong) base); return (FALSE); } if (!reg_IRQ[gc->IRQ]) { /* Interrupt already registered ? */ if (!request_irq(gc->IRQ, eata_pio_int_handler, SA_INTERRUPT, "EATA-PIO", NULL)){ reg_IRQ[gc->IRQ]++; if (!gc->IRQ_TR) reg_IRQL[gc->IRQ] = TRUE; /* IRQ is edge triggered */ } else { printk("Couldn't allocate IRQ %d, Sorry.\n", gc->IRQ); return (FALSE); } } else { /* More than one HBA on this IRQ */ if (reg_IRQL[gc->IRQ] == TRUE) { printk("Can't support more than one HBA on this IRQ,\n" " if the IRQ is edge triggered. Sorry.\n"); return (FALSE); } else reg_IRQ[gc->IRQ]++; } request_region(base, 8, "eata_pio"); size = sizeof(hostdata) + (sizeof(struct eata_ccb) * ntohs(gc->queuesiz)); sh = scsi_register(tpnt, size); hd = SD(sh); memset(hd->ccb, 0, (sizeof(struct eata_ccb) * ntohs(gc->queuesiz))); memset(hd->reads, 0, sizeof(ulong) * 26); strncpy(SD(sh)->vendor, &buff[8], 8); SD(sh)->vendor[8] = 0; strncpy(SD(sh)->name, &buff[16], 17); SD(sh)->name[17] = 0; SD(sh)->revision[0] = buff[32]; SD(sh)->revision[1] = buff[33]; SD(sh)->revision[2] = buff[34]; SD(sh)->revision[3] = '.'; SD(sh)->revision[4] = buff[35]; SD(sh)->revision[5] = 0; switch (ntohl(gc->len)) { case 0x1c: SD(sh)->EATA_revision = 'a'; break; case 0x1e: SD(sh)->EATA_revision = 'b'; break; case 0x22: SD(sh)->EATA_revision = 'c'; break; case 0x24: SD(sh)->EATA_revision = 'z'; default: SD(sh)->EATA_revision = '?'; } if(ntohl(gc->len) >= 0x22) { if (gc->is_PCI == TRUE) hd->bustype = IS_PCI; else if (gc->is_EISA == TRUE) hd->bustype = IS_EISA; else hd->bustype = IS_ISA; } else { if (buff[21] == '4') hd->bustype = IS_PCI; else if (buff[21] == '2') hd->bustype = IS_EISA; else hd->bustype = IS_ISA; } SD(sh)->cplen=cplen; SD(sh)->cppadlen=cppadlen; SD(sh)->hostid=gc->scsi_id[3]; SD(sh)->devflags=1<<gc->scsi_id[3]; SD(sh)->moresupport=gc->MORE_support; sh->unique_id = base; sh->base = (char *) base; sh->io_port = base; sh->n_io_port = 8; sh->irq = gc->IRQ; sh->dma_channel = PIO; sh->this_id = gc->scsi_id[3]; sh->can_queue = 1; sh->cmd_per_lun = 1; sh->sg_tablesize = SG_ALL; hd->channel = 0; sh->max_id = 8; sh->max_lun = 8; if (gc->SECOND) hd->primary = FALSE; else hd->primary = TRUE; sh->unchecked_isa_dma = FALSE; /* We can only do PIO */ hd->next = NULL; /* build a linked list of all HBAs */ hd->prev = last_HBA; if(hd->prev != NULL) SD(hd->prev)->next = sh; last_HBA = sh; if (first_HBA == NULL) first_HBA = sh; registered_HBAs++; return (1); } void find_pio_ISA(struct get_conf *buf, Scsi_Host_Template * tpnt) { int i; for (i = 0; i < MAXISA; i++) { if (ISAbases[i]) { if (get_pio_conf_PIO(ISAbases[i], buf) == TRUE){ register_pio_HBA(ISAbases[i], buf, tpnt); } ISAbases[i] = 0; } } return; } void find_pio_EISA(struct get_conf *buf, Scsi_Host_Template * tpnt) { u32 base; int i; #if CHECKPAL u8 pal1, pal2, pal3; #endif for (i = 0; i < MAXEISA; i++) { if (EISAbases[i] == TRUE) { /* Still a possibility ? */ base = 0x1c88 + (i * 0x1000); #if CHECKPAL pal1 = inb((u16)base - 8); pal2 = inb((u16)base - 7); pal3 = inb((u16)base - 6); if (((pal1 == 0x12) && (pal2 == 0x14)) || ((pal1 == 0x38) && (pal2 == 0xa3) && (pal3 == 0x82)) || ((pal1 == 0x06) && (pal2 == 0x94) && (pal3 == 0x24))) { DBG(DBG_PROBE, printk(KERN_NOTICE "EISA EATA id tags found: " "%x %x %x \n", (int)pal1, (int)pal2, (int)pal3)); #endif if (get_pio_conf_PIO(base, buf) == TRUE) { DBG(DBG_PROBE && DBG_EISA, print_pio_config(buf)); if (buf->IRQ) { register_pio_HBA(base, buf, tpnt); } else printk(KERN_NOTICE "eata_dma: No valid IRQ. HBA " "removed from list\n"); } /* Nothing found here so we take it from the list */ EISAbases[i] = 0; #if CHECKPAL } #endif } } return; } void find_pio_PCI(struct get_conf *buf, Scsi_Host_Template * tpnt) { #ifndef CONFIG_PCI printk(KERN_ERR "eata_pio: kernel PCI support not enabled. Skipping scan " "for PCI HBAs.\n"); #else u8 pci_bus, pci_device_fn; static s16 pci_index = 0; /* Device index to PCI BIOS calls */ u32 base = 0; u16 com_adr; u16 rev_device; u32 error, i, x; if (pcibios_present()) { for (i = 0; i <= MAXPCI; ++i, ++pci_index) { if (pcibios_find_device(PCI_VENDOR_ID_DPT, PCI_DEVICE_ID_DPT, pci_index, &pci_bus, &pci_device_fn)) break; DBG(DBG_PROBE && DBG_PCI, printk("eata_pio: HBA at bus %d, device %d," " function %d, index %d\n", (s32)pci_bus, (s32)((pci_device_fn & 0xf8) >> 3), (s32)(pci_device_fn & 7), pci_index)); if (!(error = pcibios_read_config_word(pci_bus, pci_device_fn, PCI_CLASS_DEVICE, &rev_device))) { if (rev_device == PCI_CLASS_STORAGE_SCSI) { if (!(error = pcibios_read_config_word(pci_bus, pci_device_fn, PCI_COMMAND, (u16 *) & com_adr))) { if (!((com_adr & PCI_COMMAND_IO) && (com_adr & PCI_COMMAND_MASTER))) { printk("HBA has IO or BUSMASTER mode disabled\n"); continue; } } else printk("eata_pio: error %x while reading " "PCI_COMMAND\n", error); } else printk("DEVICECLASSID %x didn't match\n", rev_device); } else { printk("eata_pio: error %x while reading PCI_CLASS_BASE\n", error); continue; } if (!(error = pcibios_read_config_dword(pci_bus, pci_device_fn, PCI_BASE_ADDRESS_0, (int *) &base))){ /* Check if the address is valid */ if (base & 0x01) { base &= 0xfffffffe; /* EISA tag there ? */ if ((inb(base) == 0x12) && (inb(base + 1) == 0x14)) continue; /* Jep, it's forced, so move on */ base += 0x10; /* Now, THIS is the real address */ if (base != 0x1f8) { /* We didn't find it in the primary search */ if (get_pio_conf_PIO(base, buf) == TRUE) { if (buf->FORCADR) /* If the address is forced */ continue; /* we'll find it later */ /* OK. We made it till here, so we can go now * and register it. We only have to check and * eventually remove it from the EISA and ISA list */ register_pio_HBA(base, buf, tpnt); if (base < 0x1000) { for (x = 0; x < MAXISA; ++x) { if (ISAbases[x] == base) { ISAbases[x] = 0; break; } } } else if ((base & 0x0fff) == 0x0c88) { x = (base >> 12) & 0x0f; EISAbases[x] = 0; } continue; /* break; */ } } } } else printk("eata_pio: error %x while reading " "PCI_BASE_ADDRESS_0\n", error); } } else printk("eata_pio: No BIOS32 extensions present. This driver release " "still depends on it.\n" " Skipping scan for PCI HBAs.\n"); #endif /* #ifndef CONFIG_PCI */ return; } int eata_pio_detect(Scsi_Host_Template * tpnt) { struct Scsi_Host *HBA_ptr; struct get_conf gc; int i; DBG((DBG_PROBE && DBG_DELAY) || DPT_DEBUG, printk("Using lots of delays to let you read the debugging output\n")); tpnt->proc_dir = &proc_scsi_eata_pio; find_pio_PCI(&gc, tpnt); find_pio_EISA(&gc, tpnt); find_pio_ISA(&gc, tpnt); for (i = 0; i <= MAXIRQ; i++) if (reg_IRQ[i]) request_irq(i, eata_pio_int_handler, SA_INTERRUPT, "EATA-PIO", NULL); HBA_ptr = first_HBA; if (registered_HBAs != 0) { printk("EATA (Extended Attachment) PIO driver version: %d.%d%s\n" "(c) 1993-95 Michael Neuffer, neuffer@goofy.zdv.uni-mainz.de\n" " Alfred Arnold, a.arnold@kfa-juelich.de\n" "This release only supports DASD devices (harddisks)\n", VER_MAJOR, VER_MINOR, VER_SUB); printk("Registered HBAs:\n"); printk("HBA no. Boardtype: Revis: EATA: Bus: BaseIO: IRQ: Ch: ID: Pr:" " QS: SG: CPL:\n"); for (i = 1; i <= registered_HBAs; i++) { printk("scsi%-2d: %.10s v%s 2.0%c %s %#.4x %2d %d %d %c" " %2d %2d %2d\n", HBA_ptr->host_no, SD(HBA_ptr)->name, SD(HBA_ptr)->revision, SD(HBA_ptr)->EATA_revision, (SD(HBA_ptr)->bustype == 'P')? "PCI ":(SD(HBA_ptr)->bustype == 'E')?"EISA":"ISA ", (uint) HBA_ptr->base, HBA_ptr->irq, SD(HBA_ptr)->channel, HBA_ptr->this_id, (SD(HBA_ptr)->primary == TRUE)?'Y':'N', HBA_ptr->can_queue, HBA_ptr->sg_tablesize, HBA_ptr->cmd_per_lun); HBA_ptr = SD(HBA_ptr)->next; } } DBG(DPT_DEBUG,DELAY(12)); return (registered_HBAs); } #ifdef MODULE /* Eventually this will go into an include file, but this will be later */ Scsi_Host_Template driver_template = EATA_PIO; #include "scsi_module.c" #endif /* * Overrides for Emacs so that we almost follow Linus's tabbing style. * Emacs will notice this stuff at the end of the file and automatically * adjust the settings for this buffer only. This must remain at the end * of the file. * --------------------------------------------------------------------------- * Local variables: * c-indent-level: 4 * c-brace-imaginary-offset: 0 * c-brace-offset: -4 * c-argdecl-indent: 4 * c-label-offset: -4 * c-continued-statement-offset: 4 * c-continued-brace-offset: 0 * indent-tabs-mode: nil * tab-width: 8 * End: */