Revision 3b12e0141f7a97c3b84731b5f935ed738bb6f960 authored by Stephen Hemminger on 27 September 2007, 00:58:47 UTC, committed by Jeff Garzik on 28 September 2007, 03:32:28 UTC
The Yukon FE+ chip appears to have a hardware glitch that causes bogus receive status values to be posted. The data in the packet is good, but the status value is random garbage. As a temporary workaround until the problem is better understood, implement the workaround the vendor driver used of ignoring the status value on this chip. Since this means trusting dodgy hardware values; add additional checking of the receive packet length. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
1 parent ff0ce68
gvp11.h
#ifndef GVP11_H
/* $Id: gvp11.h,v 1.4 1997/01/19 23:07:12 davem Exp $
*
* Header file for the GVP Series II SCSI controller for Linux
*
* Written and (C) 1993, Ralf Baechle, see gvp11.c for more info
* based on a2091.h (C) 1993 by Hamish Macdonald
*
*/
#include <linux/types.h>
int gvp11_detect(struct scsi_host_template *);
int gvp11_release(struct Scsi_Host *);
#ifndef CMD_PER_LUN
#define CMD_PER_LUN 2
#endif
#ifndef CAN_QUEUE
#define CAN_QUEUE 16
#endif
#ifndef HOSTS_C
/*
* if the transfer address ANDed with this results in a non-zero
* result, then we can't use DMA.
*/
#define GVP11_XFER_MASK (0xff000001)
typedef struct {
unsigned char pad1[64];
volatile unsigned short CNTR;
unsigned char pad2[31];
volatile unsigned char SASR;
unsigned char pad3;
volatile unsigned char SCMD;
unsigned char pad4[4];
volatile unsigned short BANK;
unsigned char pad5[6];
volatile unsigned long ACR;
volatile unsigned short secret1; /* store 0 here */
volatile unsigned short ST_DMA;
volatile unsigned short SP_DMA;
volatile unsigned short secret2; /* store 1 here */
volatile unsigned short secret3; /* store 15 here */
} gvp11_scsiregs;
/* bits in CNTR */
#define GVP11_DMAC_BUSY (1<<0)
#define GVP11_DMAC_INT_PENDING (1<<1)
#define GVP11_DMAC_INT_ENABLE (1<<3)
#define GVP11_DMAC_DIR_WRITE (1<<4)
#endif /* else def HOSTS_C */
#endif /* GVP11_H */
Computing file changes ...