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alistair23-linux/drivers/message/fusion/mptdebug.h
Kashyap, Desai 14d0f0b063 [SCSI] mpt fusion: Fixing 1078 data corruption issue for 36GB memory region 
The reason for this change is there is a data corruption when four different
physical memory regions in the 36GB to 37GB region are
accessed. This is only affecting 1078.

The solution is we need to use different addressing when filling in
the scatter gather table for the effected memory regions.  So instead
of snooping on all four different memory holes, we treat any physical
addresses in the 36GB address with the same algorithm.

The fix is explained below
1) Ensure that the message frames are NOT located in the trouble
region. There is no remapping available for message frames, they must
be allocated outside the problem region.
2) Ensure that Sense buffers are NOT in the trouble region. There is
no remapping available.
3) Walk through the SGE entries and if any are inside the trouble region
   then they need to be remapped as discussed below.
	1) Set the Local Address bit in the SGE Flags field.
  	MPI_SGE_FLAGS_LOCAL_ADDRESS
  	2) Ensure we are using 64-bit SGEs
  	3) Set MSb (Bit 63) of the 64-bit address, this will indicate buffer
	location is Host Memory.

Signed-off-by: Kashyap Desai <kadesai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2009-06-09 17:21:31 -05:00

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/*
* linux/drivers/message/fusion/mptdebug.h
* For use with LSI PCI chip/adapter(s)
* running LSI Fusion MPT (Message Passing Technology) firmware.
*
* Copyright (c) 1999-2008 LSI Corporation
* (mailto:DL-MPTFusionLinux@lsi.com)
*
*/
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
#ifndef MPTDEBUG_H_INCLUDED
#define MPTDEBUG_H_INCLUDED
/*
* debug level can be programmed on the fly via SysFS (hex values)
*
* Example: (programming for MPT_DEBUG_EVENTS on host 5)
*
* echo 8 > /sys/class/scsi_host/host5/debug_level
*
* --------------------------------------------------------
* mpt_debug_level - command line parameter
* this allow enabling debug at driver load time (for all iocs)
*
* Example (programming for MPT_DEBUG_EVENTS)
*
* insmod mptbase.ko mpt_debug_level=8
*
* --------------------------------------------------------
* CONFIG_FUSION_LOGGING - enables compiling debug into driver
* this can be enabled in the driver Makefile
*
*
* --------------------------------------------------------
* Please note most debug prints are set to logging priority = debug
* This is the lowest level, and most verbose. Please refer to manual
* pages for syslogd or syslogd-ng on how to configure this.
*/
#define MPT_DEBUG 0x00000001
#define MPT_DEBUG_MSG_FRAME 0x00000002
#define MPT_DEBUG_SG 0x00000004
#define MPT_DEBUG_EVENTS 0x00000008
#define MPT_DEBUG_VERBOSE_EVENTS 0x00000010
#define MPT_DEBUG_INIT 0x00000020
#define MPT_DEBUG_EXIT 0x00000040
#define MPT_DEBUG_FAIL 0x00000080
#define MPT_DEBUG_TM 0x00000100
#define MPT_DEBUG_DV 0x00000200
#define MPT_DEBUG_REPLY 0x00000400
#define MPT_DEBUG_HANDSHAKE 0x00000800
#define MPT_DEBUG_CONFIG 0x00001000
#define MPT_DEBUG_DL 0x00002000
#define MPT_DEBUG_RESET 0x00008000
#define MPT_DEBUG_SCSI 0x00010000
#define MPT_DEBUG_IOCTL 0x00020000
#define MPT_DEBUG_FC 0x00080000
#define MPT_DEBUG_SAS 0x00100000
#define MPT_DEBUG_SAS_WIDE 0x00200000
#define MPT_DEBUG_36GB_MEM 0x00400000
/*
* CONFIG_FUSION_LOGGING - enabled in Kconfig
*/
#ifdef CONFIG_FUSION_LOGGING
#define MPT_CHECK_LOGGING(IOC, CMD, BITS) \
{ \
if (IOC->debug_level & BITS) \
CMD; \
}
#else
#define MPT_CHECK_LOGGING(IOC, CMD, BITS)
#endif
/*
* debug macros
*/
#define dprintk(IOC, CMD) \
MPT_CHECK_LOGGING(IOC, CMD, MPT_DEBUG)
#define dsgprintk(IOC, CMD) \
MPT_CHECK_LOGGING(IOC, CMD, MPT_DEBUG_SG)
#define devtprintk(IOC, CMD) \
MPT_CHECK_LOGGING(IOC, CMD, MPT_DEBUG_EVENTS)
#define devtverboseprintk(IOC, CMD) \
MPT_CHECK_LOGGING(IOC, CMD, MPT_DEBUG_VERBOSE_EVENTS)
#define dinitprintk(IOC, CMD) \
MPT_CHECK_LOGGING(IOC, CMD, MPT_DEBUG_INIT)
#define dexitprintk(IOC, CMD) \
MPT_CHECK_LOGGING(IOC, CMD, MPT_DEBUG_EXIT)
#define dfailprintk(IOC, CMD) \
MPT_CHECK_LOGGING(IOC, CMD, MPT_DEBUG_FAIL)
#define dtmprintk(IOC, CMD) \
MPT_CHECK_LOGGING(IOC, CMD, MPT_DEBUG_TM)
#define ddvprintk(IOC, CMD) \
MPT_CHECK_LOGGING(IOC, CMD, MPT_DEBUG_DV)
#define dreplyprintk(IOC, CMD) \
MPT_CHECK_LOGGING(IOC, CMD, MPT_DEBUG_REPLY)
#define dhsprintk(IOC, CMD) \
MPT_CHECK_LOGGING(IOC, CMD, MPT_DEBUG_HANDSHAKE)
#define dcprintk(IOC, CMD) \
MPT_CHECK_LOGGING(IOC, CMD, MPT_DEBUG_CONFIG)
#define ddlprintk(IOC, CMD) \
MPT_CHECK_LOGGING(IOC, CMD, MPT_DEBUG_DL)
#define drsprintk(IOC, CMD) \
MPT_CHECK_LOGGING(IOC, CMD, MPT_DEBUG_RESET)
#define dsprintk(IOC, CMD) \
MPT_CHECK_LOGGING(IOC, CMD, MPT_DEBUG_SCSI)
#define dctlprintk(IOC, CMD) \
MPT_CHECK_LOGGING(IOC, CMD, MPT_DEBUG_IOCTL)
#define dfcprintk(IOC, CMD) \
MPT_CHECK_LOGGING(IOC, CMD, MPT_DEBUG_FC)
#define dsasprintk(IOC, CMD) \
MPT_CHECK_LOGGING(IOC, CMD, MPT_DEBUG_SAS)
#define dsaswideprintk(IOC, CMD) \
MPT_CHECK_LOGGING(IOC, CMD, MPT_DEBUG_SAS_WIDE)
#define d36memprintk(IOC, CMD) \
MPT_CHECK_LOGGING(IOC, CMD, MPT_DEBUG_36GB_MEM)
/*
* Verbose logging
*/
#if defined(MPT_DEBUG_VERBOSE) && defined(CONFIG_FUSION_LOGGING)
static inline void
DBG_DUMP_FW_DOWNLOAD(MPT_ADAPTER *ioc, u32 *mfp, int numfrags)
{
int i;
if (!(ioc->debug_level & MPT_DEBUG))
return;
printk(KERN_DEBUG "F/W download request:\n");
for (i=0; i < 7+numfrags*2; i++)
printk(" %08x", le32_to_cpu(mfp[i]));
printk("\n");
}
static inline void
DBG_DUMP_PUT_MSG_FRAME(MPT_ADAPTER *ioc, u32 *mfp)
{
int ii, n;
if (!(ioc->debug_level & MPT_DEBUG_MSG_FRAME))
return;
printk(KERN_DEBUG "%s: About to Put msg frame @ %p:\n",
ioc->name, mfp);
n = ioc->req_sz/4 - 1;
while (mfp[n] == 0)
n--;
for (ii=0; ii<=n; ii++) {
if (ii && ((ii%8)==0))
printk("\n");
printk(" %08x", le32_to_cpu(mfp[ii]));
}
printk("\n");
}
static inline void
DBG_DUMP_FW_REQUEST_FRAME(MPT_ADAPTER *ioc, u32 *mfp)
{
int i, n;
if (!(ioc->debug_level & MPT_DEBUG_MSG_FRAME))
return;
n = 10;
printk(KERN_INFO " ");
for (i = 0; i < n; i++)
printk(" %08x", le32_to_cpu(mfp[i]));
printk("\n");
}
static inline void
DBG_DUMP_REQUEST_FRAME(MPT_ADAPTER *ioc, u32 *mfp)
{
int i, n;
if (!(ioc->debug_level & MPT_DEBUG_MSG_FRAME))
return;
n = 24;
for (i=0; i<n; i++) {
if (i && ((i%8)==0))
printk("\n");
printk("%08x ", le32_to_cpu(mfp[i]));
}
printk("\n");
}
static inline void
DBG_DUMP_REPLY_FRAME(MPT_ADAPTER *ioc, u32 *mfp)
{
int i, n;
if (!(ioc->debug_level & MPT_DEBUG_MSG_FRAME))
return;
n = (le32_to_cpu(mfp[0]) & 0x00FF0000) >> 16;
printk(KERN_INFO " ");
for (i=0; i<n; i++)
printk(" %08x", le32_to_cpu(mfp[i]));
printk("\n");
}
static inline void
DBG_DUMP_REQUEST_FRAME_HDR(MPT_ADAPTER *ioc, u32 *mfp)
{
int i, n;
if (!(ioc->debug_level & MPT_DEBUG_MSG_FRAME))
return;
n = 3;
printk(KERN_INFO " ");
for (i=0; i<n; i++)
printk(" %08x", le32_to_cpu(mfp[i]));
printk("\n");
}
static inline void
DBG_DUMP_TM_REQUEST_FRAME(MPT_ADAPTER *ioc, u32 *mfp)
{
int i, n;
if (!(ioc->debug_level & MPT_DEBUG_TM))
return;
n = 13;
printk(KERN_DEBUG "TM_REQUEST:\n");
for (i=0; i<n; i++) {
if (i && ((i%8)==0))
printk("\n");
printk("%08x ", le32_to_cpu(mfp[i]));
}
printk("\n");
}
static inline void
DBG_DUMP_TM_REPLY_FRAME(MPT_ADAPTER *ioc, u32 *mfp)
{
int i, n;
if (!(ioc->debug_level & MPT_DEBUG_TM))
return;
n = (le32_to_cpu(mfp[0]) & 0x00FF0000) >> 16;
printk(KERN_DEBUG "TM_REPLY MessageLength=%d:\n", n);
for (i=0; i<n; i++) {
if (i && ((i%8)==0))
printk("\n");
printk(" %08x", le32_to_cpu(mfp[i]));
}
printk("\n");
}
#define dmfprintk(IOC, CMD) \
MPT_CHECK_LOGGING(IOC, CMD, MPT_DEBUG_MSG_FRAME)
# else /* ifdef MPT_DEBUG_MF */
#define DBG_DUMP_FW_DOWNLOAD(IOC, mfp, numfrags)
#define DBG_DUMP_PUT_MSG_FRAME(IOC, mfp)
#define DBG_DUMP_FW_REQUEST_FRAME(IOC, mfp)
#define DBG_DUMP_REQUEST_FRAME(IOC, mfp)
#define DBG_DUMP_REPLY_FRAME(IOC, mfp)
#define DBG_DUMP_REQUEST_FRAME_HDR(IOC, mfp)
#define DBG_DUMP_TM_REQUEST_FRAME(IOC, mfp)
#define DBG_DUMP_TM_REPLY_FRAME(IOC, mfp)
#define dmfprintk(IOC, CMD) \
MPT_CHECK_LOGGING(IOC, CMD, MPT_DEBUG_MSG_FRAME)
#endif /* defined(MPT_DEBUG_VERBOSE) && defined(CONFIG_FUSION_LOGGING) */
#endif /* ifndef MPTDEBUG_H_INCLUDED */
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