2005-04-17 00:20:36 +02:00
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/* $Id$
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* 1993/03/31
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* linux/kernel/aha1740.c
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*
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* Based loosely on aha1542.c which is
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* Copyright (C) 1992 Tommy Thorn and
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* Modified by Eric Youngdale
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*
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* This file is aha1740.c, written and
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* Copyright (C) 1992,1993 Brad McLean
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* brad@saturn.gaylord.com or brad@bradpc.gaylord.com.
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*
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* Modifications to makecode and queuecommand
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* for proper handling of multiple devices courteously
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* provided by Michael Weller, March, 1993
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*
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* Multiple adapter support, extended translation detection,
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* update to current scsi subsystem changes, proc fs support,
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* working (!) module support based on patches from Andreas Arens,
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* by Andreas Degert <ad@papyrus.hamburg.com>, 2/1997
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*
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* aha1740_makecode may still need even more work
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* if it doesn't work for your devices, take a look.
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*
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* Reworked for new_eh and new locking by Alan Cox <alan@redhat.com>
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*
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* Converted to EISA and generic DMA APIs by Marc Zyngier
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* <maz@wild-wind.fr.eu.org>, 4/2003.
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*
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* Shared interrupt support added by Rask Ingemann Lambertsen
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* <rask@sygehus.dk>, 10/2003
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*
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* For the avoidance of doubt the "preferred form" of this code is one which
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* is in an open non patent encumbered format. Where cryptographic key signing
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* forms part of the process of creating an executable the information
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* including keys needed to generate an equivalently functional executable
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* are deemed to be part of the source code.
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*/
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#include <linux/blkdev.h>
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#include <linux/interrupt.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/string.h>
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#include <linux/ioport.h>
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#include <linux/proc_fs.h>
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#include <linux/stat.h>
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#include <linux/init.h>
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#include <linux/device.h>
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#include <linux/eisa.h>
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#include <linux/dma-mapping.h>
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#include <asm/dma.h>
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#include <asm/system.h>
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#include <asm/io.h>
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#include "scsi.h"
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#include <scsi/scsi_host.h>
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#include "aha1740.h"
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/* IF YOU ARE HAVING PROBLEMS WITH THIS DRIVER, AND WANT TO WATCH
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IT WORK, THEN:
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#define DEBUG
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*/
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#ifdef DEBUG
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#define DEB(x) x
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#else
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#define DEB(x)
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#endif
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struct aha1740_hostdata {
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struct eisa_device *edev;
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unsigned int translation;
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unsigned int last_ecb_used;
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dma_addr_t ecb_dma_addr;
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struct ecb ecb[AHA1740_ECBS];
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};
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struct aha1740_sg {
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struct aha1740_chain sg_chain[AHA1740_SCATTER];
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dma_addr_t sg_dma_addr;
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dma_addr_t buf_dma_addr;
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};
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#define HOSTDATA(host) ((struct aha1740_hostdata *) &host->hostdata)
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static inline struct ecb *ecb_dma_to_cpu (struct Scsi_Host *host,
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dma_addr_t dma)
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{
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struct aha1740_hostdata *hdata = HOSTDATA (host);
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dma_addr_t offset;
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offset = dma - hdata->ecb_dma_addr;
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return (struct ecb *)(((char *) hdata->ecb) + (unsigned int) offset);
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}
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static inline dma_addr_t ecb_cpu_to_dma (struct Scsi_Host *host, void *cpu)
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{
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struct aha1740_hostdata *hdata = HOSTDATA (host);
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dma_addr_t offset;
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offset = (char *) cpu - (char *) hdata->ecb;
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return hdata->ecb_dma_addr + offset;
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}
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static int aha1740_proc_info(struct Scsi_Host *shpnt, char *buffer,
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char **start, off_t offset,
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int length, int inout)
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{
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int len;
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struct aha1740_hostdata *host;
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if (inout)
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return-ENOSYS;
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host = HOSTDATA(shpnt);
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len = sprintf(buffer, "aha174x at IO:%lx, IRQ %d, SLOT %d.\n"
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"Extended translation %sabled.\n",
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shpnt->io_port, shpnt->irq, host->edev->slot,
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host->translation ? "en" : "dis");
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if (offset > len) {
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*start = buffer;
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return 0;
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}
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*start = buffer + offset;
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len -= offset;
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if (len > length)
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len = length;
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return len;
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}
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static int aha1740_makecode(unchar *sense, unchar *status)
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{
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struct statusword
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{
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ushort don:1, /* Command Done - No Error */
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du:1, /* Data underrun */
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:1, qf:1, /* Queue full */
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sc:1, /* Specification Check */
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dor:1, /* Data overrun */
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ch:1, /* Chaining Halted */
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intr:1, /* Interrupt issued */
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asa:1, /* Additional Status Available */
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sns:1, /* Sense information Stored */
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:1, ini:1, /* Initialization Required */
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me:1, /* Major error or exception */
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:1, eca:1, /* Extended Contingent alliance */
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:1;
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} status_word;
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int retval = DID_OK;
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status_word = * (struct statusword *) status;
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#ifdef DEBUG
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printk("makecode from %x,%x,%x,%x %x,%x,%x,%x",
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status[0], status[1], status[2], status[3],
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sense[0], sense[1], sense[2], sense[3]);
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#endif
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if (!status_word.don) { /* Anything abnormal was detected */
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if ( (status[1]&0x18) || status_word.sc ) {
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/*Additional info available*/
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/* Use the supplied info for further diagnostics */
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switch ( status[2] ) {
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case 0x12:
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if ( status_word.dor )
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retval=DID_ERROR; /* It's an Overrun */
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/* If not overrun, assume underrun and
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* ignore it! */
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case 0x00: /* No info, assume no error, should
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* not occur */
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break;
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case 0x11:
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case 0x21:
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retval=DID_TIME_OUT;
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break;
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case 0x0a:
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retval=DID_BAD_TARGET;
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break;
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case 0x04:
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case 0x05:
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retval=DID_ABORT;
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/* Either by this driver or the
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* AHA1740 itself */
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break;
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default:
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retval=DID_ERROR; /* No further
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* diagnostics
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* possible */
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}
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} else {
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/* Michael suggests, and Brad concurs: */
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if ( status_word.qf ) {
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retval = DID_TIME_OUT; /* forces a redo */
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/* I think this specific one should
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* not happen -Brad */
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printk("aha1740.c: WARNING: AHA1740 queue overflow!\n");
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} else
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if ( status[0]&0x60 ) {
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/* Didn't find a better error */
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retval = DID_ERROR;
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}
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/* In any other case return DID_OK so for example
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CONDITION_CHECKS make it through to the appropriate
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device driver */
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}
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}
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/* Under all circumstances supply the target status -Michael */
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return status[3] | retval << 16;
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}
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static int aha1740_test_port(unsigned int base)
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{
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if ( inb(PORTADR(base)) & PORTADDR_ENH )
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return 1; /* Okay, we're all set */
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printk("aha174x: Board detected, but not in enhanced mode, so disabled it.\n");
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return 0;
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}
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/* A "high" level interrupt handler */
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IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
of passing regs around manually through all ~1800 interrupt handlers in the
Linux kernel.
The regs pointer is used in few places, but it potentially costs both stack
space and code to pass it around. On the FRV arch, removing the regs parameter
from all the genirq function results in a 20% speed up of the IRQ exit path
(ie: from leaving timer_interrupt() to leaving do_IRQ()).
Where appropriate, an arch may override the generic storage facility and do
something different with the variable. On FRV, for instance, the address is
maintained in GR28 at all times inside the kernel as part of general exception
handling.
Having looked over the code, it appears that the parameter may be handed down
through up to twenty or so layers of functions. Consider a USB character
device attached to a USB hub, attached to a USB controller that posts its
interrupts through a cascaded auxiliary interrupt controller. A character
device driver may want to pass regs to the sysrq handler through the input
layer which adds another few layers of parameter passing.
I've build this code with allyesconfig for x86_64 and i386. I've runtested the
main part of the code on FRV and i386, though I can't test most of the drivers.
I've also done partial conversion for powerpc and MIPS - these at least compile
with minimal configurations.
This will affect all archs. Mostly the changes should be relatively easy.
Take do_IRQ(), store the regs pointer at the beginning, saving the old one:
struct pt_regs *old_regs = set_irq_regs(regs);
And put the old one back at the end:
set_irq_regs(old_regs);
Don't pass regs through to generic_handle_irq() or __do_IRQ().
In timer_interrupt(), this sort of change will be necessary:
- update_process_times(user_mode(regs));
- profile_tick(CPU_PROFILING, regs);
+ update_process_times(user_mode(get_irq_regs()));
+ profile_tick(CPU_PROFILING);
I'd like to move update_process_times()'s use of get_irq_regs() into itself,
except that i386, alone of the archs, uses something other than user_mode().
Some notes on the interrupt handling in the drivers:
(*) input_dev() is now gone entirely. The regs pointer is no longer stored in
the input_dev struct.
(*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does
something different depending on whether it's been supplied with a regs
pointer or not.
(*) Various IRQ handler function pointers have been moved to type
irq_handler_t.
Signed-Off-By: David Howells <dhowells@redhat.com>
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05 15:55:46 +02:00
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static irqreturn_t aha1740_intr_handle(int irq, void *dev_id)
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2005-04-17 00:20:36 +02:00
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{
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struct Scsi_Host *host = (struct Scsi_Host *) dev_id;
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void (*my_done)(Scsi_Cmnd *);
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int errstatus, adapstat;
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int number_serviced;
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struct ecb *ecbptr;
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Scsi_Cmnd *SCtmp;
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unsigned int base;
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unsigned long flags;
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int handled = 0;
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struct aha1740_sg *sgptr;
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struct eisa_device *edev;
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if (!host)
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panic("aha1740.c: Irq from unknown host!\n");
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spin_lock_irqsave(host->host_lock, flags);
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base = host->io_port;
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number_serviced = 0;
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edev = HOSTDATA(host)->edev;
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while(inb(G2STAT(base)) & G2STAT_INTPEND) {
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handled = 1;
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DEB(printk("aha1740_intr top of loop.\n"));
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adapstat = inb(G2INTST(base));
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ecbptr = ecb_dma_to_cpu (host, inl(MBOXIN0(base)));
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outb(G2CNTRL_IRST,G2CNTRL(base)); /* interrupt reset */
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switch ( adapstat & G2INTST_MASK ) {
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case G2INTST_CCBRETRY:
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case G2INTST_CCBERROR:
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case G2INTST_CCBGOOD:
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/* Host Ready -> Mailbox in complete */
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outb(G2CNTRL_HRDY,G2CNTRL(base));
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if (!ecbptr) {
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printk("Aha1740 null ecbptr in interrupt (%x,%x,%x,%d)\n",
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inb(G2STAT(base)),adapstat,
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inb(G2INTST(base)), number_serviced++);
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continue;
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}
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SCtmp = ecbptr->SCpnt;
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if (!SCtmp) {
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printk("Aha1740 null SCtmp in interrupt (%x,%x,%x,%d)\n",
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inb(G2STAT(base)),adapstat,
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inb(G2INTST(base)), number_serviced++);
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continue;
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}
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sgptr = (struct aha1740_sg *) SCtmp->host_scribble;
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2007-05-14 13:26:06 +02:00
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scsi_dma_unmap(SCtmp);
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2005-04-17 00:20:36 +02:00
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/* Free the sg block */
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dma_free_coherent (&edev->dev,
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sizeof (struct aha1740_sg),
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SCtmp->host_scribble,
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sgptr->sg_dma_addr);
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/* Fetch the sense data, and tuck it away, in
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the required slot. The Adaptec
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automatically fetches it, and there is no
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guarantee that we will still have it in the
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cdb when we come back */
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if ( (adapstat & G2INTST_MASK) == G2INTST_CCBERROR ) {
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memcpy(SCtmp->sense_buffer, ecbptr->sense,
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sizeof(SCtmp->sense_buffer));
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errstatus = aha1740_makecode(ecbptr->sense,ecbptr->status);
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} else
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errstatus = 0;
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DEB(if (errstatus)
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printk("aha1740_intr_handle: returning %6x\n",
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errstatus));
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SCtmp->result = errstatus;
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my_done = ecbptr->done;
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memset(ecbptr,0,sizeof(struct ecb));
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if ( my_done )
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my_done(SCtmp);
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break;
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case G2INTST_HARDFAIL:
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printk(KERN_ALERT "aha1740 hardware failure!\n");
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panic("aha1740.c"); /* Goodbye */
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case G2INTST_ASNEVENT:
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printk("aha1740 asynchronous event: %02x %02x %02x %02x %02x\n",
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adapstat,
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inb(MBOXIN0(base)),
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inb(MBOXIN1(base)),
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inb(MBOXIN2(base)),
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inb(MBOXIN3(base))); /* Say What? */
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/* Host Ready -> Mailbox in complete */
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outb(G2CNTRL_HRDY,G2CNTRL(base));
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break;
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case G2INTST_CMDGOOD:
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/* set immediate command success flag here: */
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break;
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case G2INTST_CMDERROR:
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/* Set immediate command failure flag here: */
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break;
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}
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number_serviced++;
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}
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spin_unlock_irqrestore(host->host_lock, flags);
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return IRQ_RETVAL(handled);
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}
|
|
|
|
|
|
|
|
static int aha1740_queuecommand(Scsi_Cmnd * SCpnt, void (*done)(Scsi_Cmnd *))
|
|
|
|
{
|
|
|
|
unchar direction;
|
|
|
|
unchar *cmd = (unchar *) SCpnt->cmnd;
|
2005-10-25 00:05:09 +02:00
|
|
|
unchar target = scmd_id(SCpnt);
|
2005-04-17 00:20:36 +02:00
|
|
|
struct aha1740_hostdata *host = HOSTDATA(SCpnt->device->host);
|
|
|
|
unsigned long flags;
|
|
|
|
dma_addr_t sg_dma;
|
|
|
|
struct aha1740_sg *sgptr;
|
2007-05-14 13:26:06 +02:00
|
|
|
int ecbno, nseg;
|
2005-04-17 00:20:36 +02:00
|
|
|
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;
|
2007-05-14 13:26:06 +02:00
|
|
|
|
|
|
|
nseg = scsi_dma_map(SCpnt);
|
|
|
|
BUG_ON(nseg < 0);
|
|
|
|
if (nseg) {
|
|
|
|
struct scatterlist *sg;
|
2005-04-17 00:20:36 +02:00
|
|
|
struct aha1740_chain * cptr;
|
2007-05-14 13:26:06 +02:00
|
|
|
int i;
|
2005-04-17 00:20:36 +02:00
|
|
|
DEB(unsigned char * ptr);
|
|
|
|
|
|
|
|
host->ecb[ecbno].sg = 1; /* SCSI Initiator Command
|
|
|
|
* w/scatter-gather*/
|
|
|
|
cptr = sgptr->sg_chain;
|
2007-05-14 13:26:06 +02:00
|
|
|
scsi_for_each_sg(SCpnt, sg, nseg, i) {
|
|
|
|
cptr[i].datalen = sg_dma_len (sg);
|
|
|
|
cptr[i].dataptr = sg_dma_address (sg);
|
2005-04-17 00:20:36 +02:00
|
|
|
}
|
2007-05-14 13:26:06 +02:00
|
|
|
host->ecb[ecbno].datalen = nseg * sizeof(struct aha1740_chain);
|
2005-04-17 00:20:36 +02:00
|
|
|
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 {
|
2007-05-14 13:26:06 +02:00
|
|
|
host->ecb[ecbno].datalen = 0;
|
|
|
|
host->ecb[ecbno].dataptr = 0;
|
2005-04-17 00:20:36 +02:00
|
|
|
}
|
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
2005-10-31 18:31:40 +01:00
|
|
|
static struct scsi_host_template aha1740_template = {
|
2005-04-17 00:20:36 +02:00
|
|
|
.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,
|
2007-10-16 11:24:32 +02:00
|
|
|
.use_sg_chaining = ENABLE_SG_CHAINING,
|
2005-04-17 00:20:36 +02:00
|
|
|
.eh_abort_handler = aha1740_eh_abort_handler,
|
|
|
|
};
|
|
|
|
|
|
|
|
static int aha1740_probe (struct device *dev)
|
|
|
|
{
|
2006-11-09 04:56:19 +01:00
|
|
|
int slotbase, rc;
|
2005-04-17 00:20:36 +02:00
|
|
|
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));
|
2006-07-02 04:29:42 +02:00
|
|
|
if (request_irq(irq_level,aha1740_intr_handle,irq_type ? 0 : IRQF_SHARED,
|
2005-04-17 00:20:36 +02:00
|
|
|
"aha1740",shpnt)) {
|
|
|
|
printk(KERN_ERR "aha1740_probe: Unable to allocate IRQ %d.\n",
|
|
|
|
irq_level);
|
|
|
|
goto err_unmap;
|
|
|
|
}
|
|
|
|
|
|
|
|
eisa_set_drvdata (edev, shpnt);
|
2006-11-09 04:56:19 +01:00
|
|
|
|
|
|
|
rc = scsi_add_host (shpnt, dev);
|
|
|
|
if (rc)
|
|
|
|
goto err_irq;
|
|
|
|
|
2005-04-17 00:20:36 +02:00
|
|
|
scsi_scan_host (shpnt);
|
|
|
|
return 0;
|
|
|
|
|
2006-11-09 04:56:19 +01:00
|
|
|
err_irq:
|
|
|
|
free_irq(irq_level, shpnt);
|
2005-04-17 00:20:36 +02:00
|
|
|
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 */
|
|
|
|
{ "" }
|
|
|
|
};
|
2006-09-27 10:50:56 +02:00
|
|
|
MODULE_DEVICE_TABLE(eisa, aha1740_ids);
|
2005-04-17 00:20:36 +02:00
|
|
|
|
|
|
|
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");
|