Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/scsi/aha1740.c b/drivers/scsi/aha1740.c
new file mode 100644
index 0000000..73f33e7
--- /dev/null
+++ b/drivers/scsi/aha1740.c
@@ -0,0 +1,707 @@
+/* $Id$
+ * 1993/03/31
+ * linux/kernel/aha1740.c
+ *
+ * Based loosely on aha1542.c which is
+ * Copyright (C) 1992 Tommy Thorn and
+ * Modified by Eric Youngdale
+ *
+ * This file is aha1740.c, written and
+ * Copyright (C) 1992,1993 Brad McLean
+ * brad@saturn.gaylord.com or brad@bradpc.gaylord.com.
+ *
+ * Modifications to makecode and queuecommand
+ * for proper handling of multiple devices courteously
+ * provided by Michael Weller, March, 1993
+ *
+ * Multiple adapter support, extended translation detection,
+ * update to current scsi subsystem changes, proc fs support,
+ * working (!) module support based on patches from Andreas Arens,
+ * by Andreas Degert <ad@papyrus.hamburg.com>, 2/1997
+ *
+ * aha1740_makecode may still need even more work
+ * if it doesn't work for your devices, take a look.
+ *
+ * Reworked for new_eh and new locking by Alan Cox <alan@redhat.com>
+ *
+ * Converted to EISA and generic DMA APIs by Marc Zyngier
+ * <maz@wild-wind.fr.eu.org>, 4/2003.
+ *
+ * Shared interrupt support added by Rask Ingemann Lambertsen
+ * <rask@sygehus.dk>, 10/2003
+ *
+ * For the avoidance of doubt the "preferred form" of this code is one which
+ * is in an open non patent encumbered format. Where cryptographic key signing
+ * forms part of the process of creating an executable the information
+ * including keys needed to generate an equivalently functional executable
+ * are deemed to be part of the source code.
+ */
+
+#include <linux/blkdev.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/string.h>
+#include <linux/ioport.h>
+#include <linux/proc_fs.h>
+#include <linux/stat.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/eisa.h>
+#include <linux/dma-mapping.h>
+
+#include <asm/dma.h>
+#include <asm/system.h>
+#include <asm/io.h>
+
+#include "scsi.h"
+#include <scsi/scsi_host.h>
+#include "aha1740.h"
+
+/* IF YOU ARE HAVING PROBLEMS WITH THIS DRIVER, AND WANT TO WATCH
+ IT WORK, THEN:
+#define DEBUG
+*/
+#ifdef DEBUG
+#define DEB(x) x
+#else
+#define DEB(x)
+#endif
+
+struct aha1740_hostdata {
+ struct eisa_device *edev;
+ unsigned int translation;
+ unsigned int last_ecb_used;
+ dma_addr_t ecb_dma_addr;
+ struct ecb ecb[AHA1740_ECBS];
+};
+
+struct aha1740_sg {
+ struct aha1740_chain sg_chain[AHA1740_SCATTER];
+ dma_addr_t sg_dma_addr;
+ dma_addr_t buf_dma_addr;
+};
+
+#define HOSTDATA(host) ((struct aha1740_hostdata *) &host->hostdata)
+
+static inline struct ecb *ecb_dma_to_cpu (struct Scsi_Host *host,
+ dma_addr_t dma)
+{
+ struct aha1740_hostdata *hdata = HOSTDATA (host);
+ dma_addr_t offset;
+
+ offset = dma - hdata->ecb_dma_addr;
+
+ return (struct ecb *)(((char *) hdata->ecb) + (unsigned int) offset);
+}
+
+static inline dma_addr_t ecb_cpu_to_dma (struct Scsi_Host *host, void *cpu)
+{
+ struct aha1740_hostdata *hdata = HOSTDATA (host);
+ dma_addr_t offset;
+
+ offset = (char *) cpu - (char *) hdata->ecb;
+
+ return hdata->ecb_dma_addr + offset;
+}
+
+static int aha1740_proc_info(struct Scsi_Host *shpnt, char *buffer,
+ char **start, off_t offset,
+ int length, int inout)
+{
+ int len;
+ struct aha1740_hostdata *host;
+
+ if (inout)
+ return-ENOSYS;
+
+ host = HOSTDATA(shpnt);
+
+ len = sprintf(buffer, "aha174x at IO:%lx, IRQ %d, SLOT %d.\n"
+ "Extended translation %sabled.\n",
+ shpnt->io_port, shpnt->irq, host->edev->slot,
+ host->translation ? "en" : "dis");
+
+ if (offset > len) {
+ *start = buffer;
+ return 0;
+ }
+
+ *start = buffer + offset;
+ len -= offset;
+ if (len > length)
+ len = length;
+ return len;
+}
+
+static int aha1740_makecode(unchar *sense, unchar *status)
+{
+ struct statusword
+ {
+ ushort don:1, /* Command Done - No Error */
+ du:1, /* Data underrun */
+ :1, qf:1, /* Queue full */
+ sc:1, /* Specification Check */
+ dor:1, /* Data overrun */
+ ch:1, /* Chaining Halted */
+ intr:1, /* Interrupt issued */
+ asa:1, /* Additional Status Available */
+ sns:1, /* Sense information Stored */
+ :1, ini:1, /* Initialization Required */
+ me:1, /* Major error or exception */
+ :1, eca:1, /* Extended Contingent alliance */
+ :1;
+ } status_word;
+ int retval = DID_OK;
+
+ status_word = * (struct statusword *) status;
+#ifdef DEBUG
+ printk("makecode from %x,%x,%x,%x %x,%x,%x,%x",
+ status[0], status[1], status[2], status[3],
+ sense[0], sense[1], sense[2], sense[3]);
+#endif
+ if (!status_word.don) { /* Anything abnormal was detected */
+ if ( (status[1]&0x18) || status_word.sc ) {
+ /*Additional info available*/
+ /* Use the supplied info for further diagnostics */
+ switch ( status[2] ) {
+ case 0x12:
+ if ( status_word.dor )
+ retval=DID_ERROR; /* It's an Overrun */
+ /* If not overrun, assume underrun and
+ * ignore it! */
+ case 0x00: /* No info, assume no error, should
+ * not occur */
+ break;
+ case 0x11:
+ case 0x21:
+ retval=DID_TIME_OUT;
+ break;
+ case 0x0a:
+ retval=DID_BAD_TARGET;
+ break;
+ case 0x04:
+ case 0x05:
+ retval=DID_ABORT;
+ /* Either by this driver or the
+ * AHA1740 itself */
+ break;
+ default:
+ retval=DID_ERROR; /* No further
+ * diagnostics
+ * possible */
+ }
+ } else {
+ /* Michael suggests, and Brad concurs: */
+ if ( status_word.qf ) {
+ retval = DID_TIME_OUT; /* forces a redo */
+ /* I think this specific one should
+ * not happen -Brad */
+ printk("aha1740.c: WARNING: AHA1740 queue overflow!\n");
+ } else
+ if ( status[0]&0x60 ) {
+ /* Didn't find a better error */
+ retval = DID_ERROR;
+ }
+ /* In any other case return DID_OK so for example
+ CONDITION_CHECKS make it through to the appropriate
+ device driver */
+ }
+ }
+ /* Under all circumstances supply the target status -Michael */
+ return status[3] | retval << 16;
+}
+
+static int aha1740_test_port(unsigned int base)
+{
+ if ( inb(PORTADR(base)) & PORTADDR_ENH )
+ return 1; /* Okay, we're all set */
+
+ printk("aha174x: Board detected, but not in enhanced mode, so disabled it.\n");
+ return 0;
+}
+
+/* A "high" level interrupt handler */
+static irqreturn_t aha1740_intr_handle(int irq, void *dev_id,
+ struct pt_regs *regs)
+{
+ struct Scsi_Host *host = (struct Scsi_Host *) dev_id;
+ void (*my_done)(Scsi_Cmnd *);
+ int errstatus, adapstat;
+ int number_serviced;
+ struct ecb *ecbptr;
+ Scsi_Cmnd *SCtmp;
+ unsigned int base;
+ unsigned long flags;
+ int handled = 0;
+ struct aha1740_sg *sgptr;
+ struct eisa_device *edev;
+
+ if (!host)
+ panic("aha1740.c: Irq from unknown host!\n");
+ spin_lock_irqsave(host->host_lock, flags);
+ base = host->io_port;
+ number_serviced = 0;
+ edev = HOSTDATA(host)->edev;
+
+ while(inb(G2STAT(base)) & G2STAT_INTPEND) {
+ handled = 1;
+ DEB(printk("aha1740_intr top of loop.\n"));
+ adapstat = inb(G2INTST(base));
+ ecbptr = ecb_dma_to_cpu (host, inl(MBOXIN0(base)));
+ outb(G2CNTRL_IRST,G2CNTRL(base)); /* interrupt reset */
+
+ switch ( adapstat & G2INTST_MASK ) {
+ case G2INTST_CCBRETRY:
+ case G2INTST_CCBERROR:
+ case G2INTST_CCBGOOD:
+ /* Host Ready -> Mailbox in complete */
+ outb(G2CNTRL_HRDY,G2CNTRL(base));
+ if (!ecbptr) {
+ printk("Aha1740 null ecbptr in interrupt (%x,%x,%x,%d)\n",
+ inb(G2STAT(base)),adapstat,
+ inb(G2INTST(base)), number_serviced++);
+ continue;
+ }
+ SCtmp = ecbptr->SCpnt;
+ if (!SCtmp) {
+ printk("Aha1740 null SCtmp in interrupt (%x,%x,%x,%d)\n",
+ inb(G2STAT(base)),adapstat,
+ inb(G2INTST(base)), number_serviced++);
+ continue;
+ }
+ sgptr = (struct aha1740_sg *) SCtmp->host_scribble;
+ if (SCtmp->use_sg) {
+ /* We used scatter-gather.
+ Do the unmapping dance. */
+ dma_unmap_sg (&edev->dev,
+ (struct scatterlist *) SCtmp->request_buffer,
+ SCtmp->use_sg,
+ SCtmp->sc_data_direction);
+ } else {
+ dma_unmap_single (&edev->dev,
+ sgptr->buf_dma_addr,
+ SCtmp->request_bufflen,
+ DMA_BIDIRECTIONAL);
+ }
+
+ /* Free the sg block */
+ dma_free_coherent (&edev->dev,
+ sizeof (struct aha1740_sg),
+ SCtmp->host_scribble,
+ sgptr->sg_dma_addr);
+
+ /* Fetch the sense data, and tuck it away, in
+ the required slot. The Adaptec
+ automatically fetches it, and there is no
+ guarantee that we will still have it in the
+ cdb when we come back */
+ if ( (adapstat & G2INTST_MASK) == G2INTST_CCBERROR ) {
+ memcpy(SCtmp->sense_buffer, ecbptr->sense,
+ sizeof(SCtmp->sense_buffer));
+ errstatus = aha1740_makecode(ecbptr->sense,ecbptr->status);
+ } else
+ errstatus = 0;
+ DEB(if (errstatus)
+ printk("aha1740_intr_handle: returning %6x\n",
+ errstatus));
+ SCtmp->result = errstatus;
+ my_done = ecbptr->done;
+ memset(ecbptr,0,sizeof(struct ecb));
+ if ( my_done )
+ my_done(SCtmp);
+ break;
+
+ case G2INTST_HARDFAIL:
+ printk(KERN_ALERT "aha1740 hardware failure!\n");
+ panic("aha1740.c"); /* Goodbye */
+
+ case G2INTST_ASNEVENT:
+ printk("aha1740 asynchronous event: %02x %02x %02x %02x %02x\n",
+ adapstat,
+ inb(MBOXIN0(base)),
+ inb(MBOXIN1(base)),
+ inb(MBOXIN2(base)),
+ inb(MBOXIN3(base))); /* Say What? */
+ /* Host Ready -> Mailbox in complete */
+ outb(G2CNTRL_HRDY,G2CNTRL(base));
+ break;
+
+ case G2INTST_CMDGOOD:
+ /* set immediate command success flag here: */
+ break;
+
+ case G2INTST_CMDERROR:
+ /* Set immediate command failure flag here: */
+ break;
+ }
+ number_serviced++;
+ }
+
+ spin_unlock_irqrestore(host->host_lock, flags);
+ return IRQ_RETVAL(handled);
+}
+
+static int aha1740_queuecommand(Scsi_Cmnd * SCpnt, void (*done)(Scsi_Cmnd *))
+{
+ unchar direction;
+ unchar *cmd = (unchar *) SCpnt->cmnd;
+ unchar target = SCpnt->device->id;
+ struct aha1740_hostdata *host = HOSTDATA(SCpnt->device->host);
+ unsigned long flags;
+ void *buff = SCpnt->request_buffer;
+ int bufflen = SCpnt->request_bufflen;
+ dma_addr_t sg_dma;
+ struct aha1740_sg *sgptr;
+ int ecbno;
+ DEB(int i);
+
+ if(*cmd == REQUEST_SENSE) {
+ SCpnt->result = 0;
+ done(SCpnt);
+ return 0;
+ }
+
+#ifdef DEBUG
+ if (*cmd == READ_10 || *cmd == WRITE_10)
+ i = xscsi2int(cmd+2);
+ else if (*cmd == READ_6 || *cmd == WRITE_6)
+ i = scsi2int(cmd+2);
+ else
+ i = -1;
+ printk("aha1740_queuecommand: dev %d cmd %02x pos %d len %d ",
+ target, *cmd, i, bufflen);
+ printk("scsi cmd:");
+ for (i = 0; i < SCpnt->cmd_len; i++) printk("%02x ", cmd[i]);
+ printk("\n");
+#endif
+
+ /* locate an available ecb */
+ spin_lock_irqsave(SCpnt->device->host->host_lock, flags);
+ ecbno = host->last_ecb_used + 1; /* An optimization */
+ if (ecbno >= AHA1740_ECBS)
+ ecbno = 0;
+ do {
+ if (!host->ecb[ecbno].cmdw)
+ break;
+ ecbno++;
+ if (ecbno >= AHA1740_ECBS)
+ ecbno = 0;
+ } while (ecbno != host->last_ecb_used);
+
+ if (host->ecb[ecbno].cmdw)
+ panic("Unable to find empty ecb for aha1740.\n");
+
+ host->ecb[ecbno].cmdw = AHA1740CMD_INIT; /* SCSI Initiator Command
+ doubles as reserved flag */
+
+ host->last_ecb_used = ecbno;
+ spin_unlock_irqrestore(SCpnt->device->host->host_lock, flags);
+
+#ifdef DEBUG
+ printk("Sending command (%d %x)...", ecbno, done);
+#endif
+
+ host->ecb[ecbno].cdblen = SCpnt->cmd_len; /* SCSI Command
+ * Descriptor Block
+ * Length */
+
+ direction = 0;
+ if (*cmd == READ_10 || *cmd == READ_6)
+ direction = 1;
+ else if (*cmd == WRITE_10 || *cmd == WRITE_6)
+ direction = 0;
+
+ memcpy(host->ecb[ecbno].cdb, cmd, SCpnt->cmd_len);
+
+ SCpnt->host_scribble = dma_alloc_coherent (&host->edev->dev,
+ sizeof (struct aha1740_sg),
+ &sg_dma, GFP_ATOMIC);
+ if(SCpnt->host_scribble == NULL) {
+ printk(KERN_WARNING "aha1740: out of memory in queuecommand!\n");
+ return 1;
+ }
+ sgptr = (struct aha1740_sg *) SCpnt->host_scribble;
+ sgptr->sg_dma_addr = sg_dma;
+
+ if (SCpnt->use_sg) {
+ struct scatterlist * sgpnt;
+ struct aha1740_chain * cptr;
+ int i, count;
+ DEB(unsigned char * ptr);
+
+ host->ecb[ecbno].sg = 1; /* SCSI Initiator Command
+ * w/scatter-gather*/
+ sgpnt = (struct scatterlist *) SCpnt->request_buffer;
+ cptr = sgptr->sg_chain;
+ count = dma_map_sg (&host->edev->dev, sgpnt, SCpnt->use_sg,
+ SCpnt->sc_data_direction);
+ for(i=0; i < count; i++) {
+ cptr[i].datalen = sg_dma_len (sgpnt + i);
+ cptr[i].dataptr = sg_dma_address (sgpnt + i);
+ }
+ host->ecb[ecbno].datalen = count*sizeof(struct aha1740_chain);
+ host->ecb[ecbno].dataptr = sg_dma;
+#ifdef DEBUG
+ printk("cptr %x: ",cptr);
+ ptr = (unsigned char *) cptr;
+ for(i=0;i<24;i++) printk("%02x ", ptr[i]);
+#endif
+ } else {
+ host->ecb[ecbno].datalen = bufflen;
+ sgptr->buf_dma_addr = dma_map_single (&host->edev->dev,
+ buff, bufflen,
+ DMA_BIDIRECTIONAL);
+ host->ecb[ecbno].dataptr = sgptr->buf_dma_addr;
+ }
+ host->ecb[ecbno].lun = SCpnt->device->lun;
+ host->ecb[ecbno].ses = 1; /* Suppress underrun errors */
+ host->ecb[ecbno].dir = direction;
+ host->ecb[ecbno].ars = 1; /* Yes, get the sense on an error */
+ host->ecb[ecbno].senselen = 12;
+ host->ecb[ecbno].senseptr = ecb_cpu_to_dma (SCpnt->device->host,
+ host->ecb[ecbno].sense);
+ host->ecb[ecbno].statusptr = ecb_cpu_to_dma (SCpnt->device->host,
+ host->ecb[ecbno].status);
+ host->ecb[ecbno].done = done;
+ host->ecb[ecbno].SCpnt = SCpnt;
+#ifdef DEBUG
+ {
+ int i;
+ printk("aha1740_command: sending.. ");
+ for (i = 0; i < sizeof(host->ecb[ecbno]) - 10; i++)
+ printk("%02x ", ((unchar *)&host->ecb[ecbno])[i]);
+ }
+ printk("\n");
+#endif
+ if (done) {
+ /* The Adaptec Spec says the card is so fast that the loops
+ will only be executed once in the code below. Even if this
+ was true with the fastest processors when the spec was
+ written, it doesn't seem to be true with todays fast
+ processors. We print a warning if the code is executed more
+ often than LOOPCNT_WARN. If this happens, it should be
+ investigated. If the count reaches LOOPCNT_MAX, we assume
+ something is broken; since there is no way to return an
+ error (the return value is ignored by the mid-level scsi
+ layer) we have to panic (and maybe that's the best thing we
+ can do then anyhow). */
+
+#define LOOPCNT_WARN 10 /* excessive mbxout wait -> syslog-msg */
+#define LOOPCNT_MAX 1000000 /* mbxout deadlock -> panic() after ~ 2 sec. */
+ int loopcnt;
+ unsigned int base = SCpnt->device->host->io_port;
+ DEB(printk("aha1740[%d] critical section\n",ecbno));
+
+ spin_lock_irqsave(SCpnt->device->host->host_lock, flags);
+ for (loopcnt = 0; ; loopcnt++) {
+ if (inb(G2STAT(base)) & G2STAT_MBXOUT) break;
+ if (loopcnt == LOOPCNT_WARN) {
+ printk("aha1740[%d]_mbxout wait!\n",ecbno);
+ }
+ if (loopcnt == LOOPCNT_MAX)
+ panic("aha1740.c: mbxout busy!\n");
+ }
+ outl (ecb_cpu_to_dma (SCpnt->device->host, host->ecb + ecbno),
+ MBOXOUT0(base));
+ for (loopcnt = 0; ; loopcnt++) {
+ if (! (inb(G2STAT(base)) & G2STAT_BUSY)) break;
+ if (loopcnt == LOOPCNT_WARN) {
+ printk("aha1740[%d]_attn wait!\n",ecbno);
+ }
+ if (loopcnt == LOOPCNT_MAX)
+ panic("aha1740.c: attn wait failed!\n");
+ }
+ outb(ATTN_START | (target & 7), ATTN(base)); /* Start it up */
+ spin_unlock_irqrestore(SCpnt->device->host->host_lock, flags);
+ DEB(printk("aha1740[%d] request queued.\n",ecbno));
+ } else
+ printk(KERN_ALERT "aha1740_queuecommand: done can't be NULL\n");
+ return 0;
+}
+
+/* Query the board for its irq_level and irq_type. Nothing else matters
+ in enhanced mode on an EISA bus. */
+
+static void aha1740_getconfig(unsigned int base, unsigned int *irq_level,
+ unsigned int *irq_type,
+ unsigned int *translation)
+{
+ static int intab[] = { 9, 10, 11, 12, 0, 14, 15, 0 };
+
+ *irq_level = intab[inb(INTDEF(base)) & 0x7];
+ *irq_type = (inb(INTDEF(base)) & 0x8) >> 3;
+ *translation = inb(RESV1(base)) & 0x1;
+ outb(inb(INTDEF(base)) | 0x10, INTDEF(base));
+}
+
+static int aha1740_biosparam(struct scsi_device *sdev,
+ struct block_device *dev,
+ sector_t capacity, int* ip)
+{
+ int size = capacity;
+ int extended = HOSTDATA(sdev->host)->translation;
+
+ DEB(printk("aha1740_biosparam\n"));
+ if (extended && (ip[2] > 1024)) {
+ ip[0] = 255;
+ ip[1] = 63;
+ ip[2] = size / (255 * 63);
+ } else {
+ ip[0] = 64;
+ ip[1] = 32;
+ ip[2] = size >> 11;
+ }
+ return 0;
+}
+
+static int aha1740_eh_abort_handler (Scsi_Cmnd *dummy)
+{
+/*
+ * From Alan Cox :
+ * The AHA1740 has firmware handled abort/reset handling. The "head in
+ * sand" kernel code is correct for once 8)
+ *
+ * So we define a dummy handler just to keep the kernel SCSI code as
+ * quiet as possible...
+ */
+
+ return 0;
+}
+
+static Scsi_Host_Template aha1740_template = {
+ .module = THIS_MODULE,
+ .proc_name = "aha1740",
+ .proc_info = aha1740_proc_info,
+ .name = "Adaptec 174x (EISA)",
+ .queuecommand = aha1740_queuecommand,
+ .bios_param = aha1740_biosparam,
+ .can_queue = AHA1740_ECBS,
+ .this_id = 7,
+ .sg_tablesize = AHA1740_SCATTER,
+ .cmd_per_lun = AHA1740_CMDLUN,
+ .use_clustering = ENABLE_CLUSTERING,
+ .eh_abort_handler = aha1740_eh_abort_handler,
+};
+
+static int aha1740_probe (struct device *dev)
+{
+ int slotbase;
+ unsigned int irq_level, irq_type, translation;
+ struct Scsi_Host *shpnt;
+ struct aha1740_hostdata *host;
+ struct eisa_device *edev = to_eisa_device (dev);
+
+ DEB(printk("aha1740_probe: \n"));
+
+ slotbase = edev->base_addr + EISA_VENDOR_ID_OFFSET;
+ if (!request_region(slotbase, SLOTSIZE, "aha1740")) /* See if in use */
+ return -EBUSY;
+ if (!aha1740_test_port(slotbase))
+ goto err_release_region;
+ aha1740_getconfig(slotbase,&irq_level,&irq_type,&translation);
+ if ((inb(G2STAT(slotbase)) &
+ (G2STAT_MBXOUT|G2STAT_BUSY)) != G2STAT_MBXOUT) {
+ /* If the card isn't ready, hard reset it */
+ outb(G2CNTRL_HRST, G2CNTRL(slotbase));
+ outb(0, G2CNTRL(slotbase));
+ }
+ printk(KERN_INFO "Configuring slot %d at IO:%x, IRQ %u (%s)\n",
+ edev->slot, slotbase, irq_level, irq_type ? "edge" : "level");
+ printk(KERN_INFO "aha174x: Extended translation %sabled.\n",
+ translation ? "en" : "dis");
+ shpnt = scsi_host_alloc(&aha1740_template,
+ sizeof(struct aha1740_hostdata));
+ if(shpnt == NULL)
+ goto err_release_region;
+
+ shpnt->base = 0;
+ shpnt->io_port = slotbase;
+ shpnt->n_io_port = SLOTSIZE;
+ shpnt->irq = irq_level;
+ shpnt->dma_channel = 0xff;
+ host = HOSTDATA(shpnt);
+ host->edev = edev;
+ host->translation = translation;
+ host->ecb_dma_addr = dma_map_single (&edev->dev, host->ecb,
+ sizeof (host->ecb),
+ DMA_BIDIRECTIONAL);
+ if (!host->ecb_dma_addr) {
+ printk (KERN_ERR "aha1740_probe: Couldn't map ECB, giving up\n");
+ scsi_unregister (shpnt);
+ goto err_host_put;
+ }
+
+ DEB(printk("aha1740_probe: enable interrupt channel %d\n",irq_level));
+ if (request_irq(irq_level,aha1740_intr_handle,irq_type ? 0 : SA_SHIRQ,
+ "aha1740",shpnt)) {
+ printk(KERN_ERR "aha1740_probe: Unable to allocate IRQ %d.\n",
+ irq_level);
+ goto err_unmap;
+ }
+
+ eisa_set_drvdata (edev, shpnt);
+ scsi_add_host (shpnt, dev); /* XXX handle failure */
+ scsi_scan_host (shpnt);
+ return 0;
+
+ err_unmap:
+ dma_unmap_single (&edev->dev, host->ecb_dma_addr,
+ sizeof (host->ecb), DMA_BIDIRECTIONAL);
+ err_host_put:
+ scsi_host_put (shpnt);
+ err_release_region:
+ release_region(slotbase, SLOTSIZE);
+
+ return -ENODEV;
+}
+
+static __devexit int aha1740_remove (struct device *dev)
+{
+ struct Scsi_Host *shpnt = dev->driver_data;
+ struct aha1740_hostdata *host = HOSTDATA (shpnt);
+
+ scsi_remove_host(shpnt);
+
+ free_irq (shpnt->irq, shpnt);
+ dma_unmap_single (dev, host->ecb_dma_addr,
+ sizeof (host->ecb), DMA_BIDIRECTIONAL);
+ release_region (shpnt->io_port, SLOTSIZE);
+
+ scsi_host_put (shpnt);
+
+ return 0;
+}
+
+static struct eisa_device_id aha1740_ids[] = {
+ { "ADP0000" }, /* 1740 */
+ { "ADP0001" }, /* 1740A */
+ { "ADP0002" }, /* 1742A */
+ { "ADP0400" }, /* 1744 */
+ { "" }
+};
+
+static struct eisa_driver aha1740_driver = {
+ .id_table = aha1740_ids,
+ .driver = {
+ .name = "aha1740",
+ .probe = aha1740_probe,
+ .remove = __devexit_p (aha1740_remove),
+ },
+};
+
+static __init int aha1740_init (void)
+{
+ return eisa_driver_register (&aha1740_driver);
+}
+
+static __exit void aha1740_exit (void)
+{
+ eisa_driver_unregister (&aha1740_driver);
+}
+
+module_init (aha1740_init);
+module_exit (aha1740_exit);
+
+MODULE_LICENSE("GPL");