eata_pio.c
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:28k
- /************************************************************
- * *
- * 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/slab.h>
- #include <linux/in.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 */
- #include <linux/blk.h>
- #include <linux/spinlock.h>
- 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);
- void do_eata_pio_int_handler(int irq, void *dev_id, struct pt_regs * regs)
- {
- unsigned long flags;
- spin_lock_irqsave(&io_request_lock, flags);
- eata_pio_int_handler(irq, dev_id, regs);
- spin_unlock_irqrestore(&io_request_lock, flags);
- }
- 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_t(unsigned int,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_t(unsigned int,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 "
- "queueslotn");
- DBG(DBG_INTR&&DBG_DELAY,DELAY(1));
- restore_flags(flags);
- return;
- }
-
- #if DBG_INTR2
- if (stat != 0x50)
- printk(KERN_DEBUG "stat: %#.2x, result: %#.8xn", 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 %dn",
- sh->can_queue,x,y));
- #if DEBUG_EATA
- panic(KERN_EMERG "eata_pio: run out of queue slots cmdno:%ld "
- "intrno: %ldn", 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 %dn", 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 %dn", (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 %xn", 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_RUNNINGn"));
- restore_flags(flags);
- return (SCSI_ABORT_NOT_RUNNING);
- }
- if (CD(cmd)->status == USED) {
- DBG(DBG_ABNORM, printk(KERN_WARNING "Returning: SCSI_ABORT_BUSYn"));
- 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 statusn");
- }
- 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 %xn", 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 (time_before(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 %#xn", 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: %xn", 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 %xn", 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:%dn",
- (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:%dn",
- 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:%dn",
- 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, do_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);
- if(sh == NULL)
- {
- release_region(base, 8);
- return FALSE;
- }
-
- 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 = 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 listn");
- }
- /* 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("eata_dma: kernel PCI support not enabled. Skipping scan for PCI HBAs.n");
- #else
- struct pci_dev *dev = NULL;
- u32 base, x;
- while ((dev = pci_find_device(PCI_VENDOR_ID_DPT, PCI_DEVICE_ID_DPT, dev)) != NULL) {
- DBG(DBG_PROBE && DBG_PCI,
- printk("eata_pio: find_PCI, HBA at %sn", dev->name));
- if (pci_enable_device(dev))
- continue;
- pci_set_master(dev);
- base = pci_resource_flags(dev, 0);
- if (base & IORESOURCE_MEM) {
- printk("eata_pio: invalid base address of device %sn", dev->name);
- continue;
- }
- base = pci_resource_start(dev, 0);
- /* 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;
- }
- }
- #if CHECK_BLINK
- else if (check_blink_state(base) == TRUE) {
- printk("eata_pio: HBA is in BLINK state.n"
- "Consult your HBAs manual to correct this.n");
- }
- #endif
- }
- }
- #endif /* #ifndef CONFIG_PCI */
- }
- 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 outputn"));
-
- tpnt->proc_name = "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, do_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%sn"
- "(c) 1993-95 Michael Neuffer, neuffer@goofy.zdv.uni-mainz.den"
- " Alfred Arnold, a.arnold@kfa-juelich.den"
- "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 %2dn",
- 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);
- }
- /* Eventually this will go into an include file, but this will be later */
- static Scsi_Host_Template driver_template = EATA_PIO;
- #include "scsi_module.c"
- MODULE_LICENSE("GPL");
- /*
- * 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:
- */