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mptscsih.c
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mptscsih.c
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/*
* linux/drivers/message/fusion/mptscsih.c
* 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)
*
*/
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/*
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; version 2 of the License.
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.
NO WARRANTY
THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
solely responsible for determining the appropriateness of using and
distributing the Program and assumes all risks associated with its
exercise of rights under this Agreement, including but not limited to
the risks and costs of program errors, damage to or loss of data,
programs or equipment, and unavailability or interruption of operations.
DISCLAIMER OF LIABILITY
NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/kdev_t.h>
#include <linux/blkdev.h>
#include <linux/delay.h> /* for mdelay */
#include <linux/interrupt.h> /* needed for in_interrupt() proto */
#include <linux/reboot.h> /* notifier code */
#include <linux/workqueue.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_tcq.h>
#include <scsi/scsi_dbg.h>
#include "mptbase.h"
#include "mptscsih.h"
#include "lsi/mpi_log_sas.h"
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
#define my_NAME "Fusion MPT SCSI Host driver"
#define my_VERSION MPT_LINUX_VERSION_COMMON
#define MYNAM "mptscsih"
MODULE_AUTHOR(MODULEAUTHOR);
MODULE_DESCRIPTION(my_NAME);
MODULE_LICENSE("GPL");
MODULE_VERSION(my_VERSION);
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/*
* Other private/forward protos...
*/
struct scsi_cmnd *mptscsih_get_scsi_lookup(MPT_ADAPTER *ioc, int i);
static struct scsi_cmnd * mptscsih_getclear_scsi_lookup(MPT_ADAPTER *ioc, int i);
static void mptscsih_set_scsi_lookup(MPT_ADAPTER *ioc, int i, struct scsi_cmnd *scmd);
static int SCPNT_TO_LOOKUP_IDX(MPT_ADAPTER *ioc, struct scsi_cmnd *scmd);
int mptscsih_io_done(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *r);
static void mptscsih_report_queue_full(struct scsi_cmnd *sc, SCSIIOReply_t *pScsiReply, SCSIIORequest_t *pScsiReq);
int mptscsih_taskmgmt_complete(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *r);
static int mptscsih_AddSGE(MPT_ADAPTER *ioc, struct scsi_cmnd *SCpnt,
SCSIIORequest_t *pReq, int req_idx);
static void mptscsih_freeChainBuffers(MPT_ADAPTER *ioc, int req_idx);
static void mptscsih_copy_sense_data(struct scsi_cmnd *sc, MPT_SCSI_HOST *hd, MPT_FRAME_HDR *mf, SCSIIOReply_t *pScsiReply);
int mptscsih_IssueTaskMgmt(MPT_SCSI_HOST *hd, u8 type, u8 channel, u8 id,
int lun, int ctx2abort, ulong timeout);
int mptscsih_ioc_reset(MPT_ADAPTER *ioc, int post_reset);
int mptscsih_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *pEvReply);
void
mptscsih_taskmgmt_response_code(MPT_ADAPTER *ioc, u8 response_code);
static int mptscsih_get_completion_code(MPT_ADAPTER *ioc,
MPT_FRAME_HDR *req, MPT_FRAME_HDR *reply);
int mptscsih_scandv_complete(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *r);
static int mptscsih_do_cmd(MPT_SCSI_HOST *hd, INTERNAL_CMD *iocmd);
static void mptscsih_synchronize_cache(MPT_SCSI_HOST *hd, VirtDevice *vdevice);
static int
mptscsih_taskmgmt_reply(MPT_ADAPTER *ioc, u8 type,
SCSITaskMgmtReply_t *pScsiTmReply);
void mptscsih_remove(struct pci_dev *);
void mptscsih_shutdown(struct pci_dev *);
#ifdef CONFIG_PM
int mptscsih_suspend(struct pci_dev *pdev, pm_message_t state);
int mptscsih_resume(struct pci_dev *pdev);
#endif
#define SNS_LEN(scp) SCSI_SENSE_BUFFERSIZE
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/*
* mptscsih_getFreeChainBuffer - Function to get a free chain
* from the MPT_SCSI_HOST FreeChainQ.
* @ioc: Pointer to MPT_ADAPTER structure
* @req_idx: Index of the SCSI IO request frame. (output)
*
* return SUCCESS or FAILED
*/
static inline int
mptscsih_getFreeChainBuffer(MPT_ADAPTER *ioc, int *retIndex)
{
MPT_FRAME_HDR *chainBuf;
unsigned long flags;
int rc;
int chain_idx;
dsgprintk(ioc, printk(MYIOC_s_DEBUG_FMT "getFreeChainBuffer called\n",
ioc->name));
spin_lock_irqsave(&ioc->FreeQlock, flags);
if (!list_empty(&ioc->FreeChainQ)) {
int offset;
chainBuf = list_entry(ioc->FreeChainQ.next, MPT_FRAME_HDR,
u.frame.linkage.list);
list_del(&chainBuf->u.frame.linkage.list);
offset = (u8 *)chainBuf - (u8 *)ioc->ChainBuffer;
chain_idx = offset / ioc->req_sz;
rc = SUCCESS;
dsgprintk(ioc, printk(MYIOC_s_DEBUG_FMT
"getFreeChainBuffer chainBuf=%p ChainBuffer=%p offset=%d chain_idx=%d\n",
ioc->name, chainBuf, ioc->ChainBuffer, offset, chain_idx));
} else {
rc = FAILED;
chain_idx = MPT_HOST_NO_CHAIN;
dfailprintk(ioc, printk(MYIOC_s_ERR_FMT "getFreeChainBuffer failed\n",
ioc->name));
}
spin_unlock_irqrestore(&ioc->FreeQlock, flags);
*retIndex = chain_idx;
return rc;
} /* mptscsih_getFreeChainBuffer() */
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/*
* mptscsih_AddSGE - Add a SGE (plus chain buffers) to the
* SCSIIORequest_t Message Frame.
* @ioc: Pointer to MPT_ADAPTER structure
* @SCpnt: Pointer to scsi_cmnd structure
* @pReq: Pointer to SCSIIORequest_t structure
*
* Returns ...
*/
static int
mptscsih_AddSGE(MPT_ADAPTER *ioc, struct scsi_cmnd *SCpnt,
SCSIIORequest_t *pReq, int req_idx)
{
char *psge;
char *chainSge;
struct scatterlist *sg;
int frm_sz;
int sges_left, sg_done;
int chain_idx = MPT_HOST_NO_CHAIN;
int sgeOffset;
int numSgeSlots, numSgeThisFrame;
u32 sgflags, sgdir, thisxfer = 0;
int chain_dma_off = 0;
int newIndex;
int ii;
dma_addr_t v2;
u32 RequestNB;
sgdir = le32_to_cpu(pReq->Control) & MPI_SCSIIO_CONTROL_DATADIRECTION_MASK;
if (sgdir == MPI_SCSIIO_CONTROL_WRITE) {
sgdir = MPT_TRANSFER_HOST_TO_IOC;
} else {
sgdir = MPT_TRANSFER_IOC_TO_HOST;
}
psge = (char *) &pReq->SGL;
frm_sz = ioc->req_sz;
/* Map the data portion, if any.
* sges_left = 0 if no data transfer.
*/
sges_left = scsi_dma_map(SCpnt);
if (sges_left < 0)
return FAILED;
/* Handle the SG case.
*/
sg = scsi_sglist(SCpnt);
sg_done = 0;
sgeOffset = sizeof(SCSIIORequest_t) - sizeof(SGE_IO_UNION);
chainSge = NULL;
/* Prior to entering this loop - the following must be set
* current MF: sgeOffset (bytes)
* chainSge (Null if original MF is not a chain buffer)
* sg_done (num SGE done for this MF)
*/
nextSGEset:
numSgeSlots = ((frm_sz - sgeOffset) / ioc->SGE_size);
numSgeThisFrame = (sges_left < numSgeSlots) ? sges_left : numSgeSlots;
sgflags = MPT_SGE_FLAGS_SIMPLE_ELEMENT | sgdir;
/* Get first (num - 1) SG elements
* Skip any SG entries with a length of 0
* NOTE: at finish, sg and psge pointed to NEXT data/location positions
*/
for (ii=0; ii < (numSgeThisFrame-1); ii++) {
thisxfer = sg_dma_len(sg);
if (thisxfer == 0) {
/* Get next SG element from the OS */
sg = sg_next(sg);
sg_done++;
continue;
}
v2 = sg_dma_address(sg);
ioc->add_sge(psge, sgflags | thisxfer, v2);
/* Get next SG element from the OS */
sg = sg_next(sg);
psge += ioc->SGE_size;
sgeOffset += ioc->SGE_size;
sg_done++;
}
if (numSgeThisFrame == sges_left) {
/* Add last element, end of buffer and end of list flags.
*/
sgflags |= MPT_SGE_FLAGS_LAST_ELEMENT |
MPT_SGE_FLAGS_END_OF_BUFFER |
MPT_SGE_FLAGS_END_OF_LIST;
/* Add last SGE and set termination flags.
* Note: Last SGE may have a length of 0 - which should be ok.
*/
thisxfer = sg_dma_len(sg);
v2 = sg_dma_address(sg);
ioc->add_sge(psge, sgflags | thisxfer, v2);
sgeOffset += ioc->SGE_size;
sg_done++;
if (chainSge) {
/* The current buffer is a chain buffer,
* but there is not another one.
* Update the chain element
* Offset and Length fields.
*/
ioc->add_chain((char *)chainSge, 0, sgeOffset,
ioc->ChainBufferDMA + chain_dma_off);
} else {
/* The current buffer is the original MF
* and there is no Chain buffer.
*/
pReq->ChainOffset = 0;
RequestNB = (((sgeOffset - 1) >> ioc->NBShiftFactor) + 1) & 0x03;
dsgprintk(ioc, printk(MYIOC_s_DEBUG_FMT
"Single Buffer RequestNB=%x, sgeOffset=%d\n", ioc->name, RequestNB, sgeOffset));
ioc->RequestNB[req_idx] = RequestNB;
}
} else {
/* At least one chain buffer is needed.
* Complete the first MF
* - last SGE element, set the LastElement bit
* - set ChainOffset (words) for orig MF
* (OR finish previous MF chain buffer)
* - update MFStructPtr ChainIndex
* - Populate chain element
* Also
* Loop until done.
*/
dsgprintk(ioc, printk(MYIOC_s_DEBUG_FMT "SG: Chain Required! sg done %d\n",
ioc->name, sg_done));
/* Set LAST_ELEMENT flag for last non-chain element
* in the buffer. Since psge points at the NEXT
* SGE element, go back one SGE element, update the flags
* and reset the pointer. (Note: sgflags & thisxfer are already
* set properly).
*/
if (sg_done) {
u32 *ptmp = (u32 *) (psge - ioc->SGE_size);
sgflags = le32_to_cpu(*ptmp);
sgflags |= MPT_SGE_FLAGS_LAST_ELEMENT;
*ptmp = cpu_to_le32(sgflags);
}
if (chainSge) {
/* The current buffer is a chain buffer.
* chainSge points to the previous Chain Element.
* Update its chain element Offset and Length (must
* include chain element size) fields.
* Old chain element is now complete.
*/
u8 nextChain = (u8) (sgeOffset >> 2);
sgeOffset += ioc->SGE_size;
ioc->add_chain((char *)chainSge, nextChain, sgeOffset,
ioc->ChainBufferDMA + chain_dma_off);
} else {
/* The original MF buffer requires a chain buffer -
* set the offset.
* Last element in this MF is a chain element.
*/
pReq->ChainOffset = (u8) (sgeOffset >> 2);
RequestNB = (((sgeOffset - 1) >> ioc->NBShiftFactor) + 1) & 0x03;
dsgprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Chain Buffer Needed, RequestNB=%x sgeOffset=%d\n", ioc->name, RequestNB, sgeOffset));
ioc->RequestNB[req_idx] = RequestNB;
}
sges_left -= sg_done;
/* NOTE: psge points to the beginning of the chain element
* in current buffer. Get a chain buffer.
*/
if ((mptscsih_getFreeChainBuffer(ioc, &newIndex)) == FAILED) {
dfailprintk(ioc, printk(MYIOC_s_DEBUG_FMT
"getFreeChainBuffer FAILED SCSI cmd=%02x (%p)\n",
ioc->name, pReq->CDB[0], SCpnt));
return FAILED;
}
/* Update the tracking arrays.
* If chainSge == NULL, update ReqToChain, else ChainToChain
*/
if (chainSge) {
ioc->ChainToChain[chain_idx] = newIndex;
} else {
ioc->ReqToChain[req_idx] = newIndex;
}
chain_idx = newIndex;
chain_dma_off = ioc->req_sz * chain_idx;
/* Populate the chainSGE for the current buffer.
* - Set chain buffer pointer to psge and fill
* out the Address and Flags fields.
*/
chainSge = (char *) psge;
dsgprintk(ioc, printk(MYIOC_s_DEBUG_FMT " Current buff @ %p (index 0x%x)",
ioc->name, psge, req_idx));
/* Start the SGE for the next buffer
*/
psge = (char *) (ioc->ChainBuffer + chain_dma_off);
sgeOffset = 0;
sg_done = 0;
dsgprintk(ioc, printk(MYIOC_s_DEBUG_FMT " Chain buff @ %p (index 0x%x)\n",
ioc->name, psge, chain_idx));
/* Start the SGE for the next buffer
*/
goto nextSGEset;
}
return SUCCESS;
} /* mptscsih_AddSGE() */
static void
mptscsih_issue_sep_command(MPT_ADAPTER *ioc, VirtTarget *vtarget,
U32 SlotStatus)
{
MPT_FRAME_HDR *mf;
SEPRequest_t *SEPMsg;
if (ioc->bus_type != SAS)
return;
/* Not supported for hidden raid components
*/
if (vtarget->tflags & MPT_TARGET_FLAGS_RAID_COMPONENT)
return;
if ((mf = mpt_get_msg_frame(ioc->InternalCtx, ioc)) == NULL) {
dfailprintk(ioc, printk(MYIOC_s_WARN_FMT "%s: no msg frames!!\n",
ioc->name,__func__));
return;
}
SEPMsg = (SEPRequest_t *)mf;
SEPMsg->Function = MPI_FUNCTION_SCSI_ENCLOSURE_PROCESSOR;
SEPMsg->Bus = vtarget->channel;
SEPMsg->TargetID = vtarget->id;
SEPMsg->Action = MPI_SEP_REQ_ACTION_WRITE_STATUS;
SEPMsg->SlotStatus = SlotStatus;
devtverboseprintk(ioc, printk(MYIOC_s_DEBUG_FMT
"Sending SEP cmd=%x channel=%d id=%d\n",
ioc->name, SlotStatus, SEPMsg->Bus, SEPMsg->TargetID));
mpt_put_msg_frame(ioc->DoneCtx, ioc, mf);
}
#ifdef CONFIG_FUSION_LOGGING
/**
* mptscsih_info_scsiio - debug print info on reply frame
* @ioc: Pointer to MPT_ADAPTER structure
* @sc: original scsi cmnd pointer
* @pScsiReply: Pointer to MPT reply frame
*
* MPT_DEBUG_REPLY needs to be enabled to obtain this info
*
* Refer to lsi/mpi.h.
**/
static void
mptscsih_info_scsiio(MPT_ADAPTER *ioc, struct scsi_cmnd *sc, SCSIIOReply_t * pScsiReply)
{
char *desc = NULL;
char *desc1 = NULL;
u16 ioc_status;
u8 skey, asc, ascq;
ioc_status = le16_to_cpu(pScsiReply->IOCStatus) & MPI_IOCSTATUS_MASK;
switch (ioc_status) {
case MPI_IOCSTATUS_SUCCESS:
desc = "success";
break;
case MPI_IOCSTATUS_SCSI_INVALID_BUS:
desc = "invalid bus";
break;
case MPI_IOCSTATUS_SCSI_INVALID_TARGETID:
desc = "invalid target_id";
break;
case MPI_IOCSTATUS_SCSI_DEVICE_NOT_THERE:
desc = "device not there";
break;
case MPI_IOCSTATUS_SCSI_DATA_OVERRUN:
desc = "data overrun";
break;
case MPI_IOCSTATUS_SCSI_DATA_UNDERRUN:
desc = "data underrun";
break;
case MPI_IOCSTATUS_SCSI_IO_DATA_ERROR:
desc = "I/O data error";
break;
case MPI_IOCSTATUS_SCSI_PROTOCOL_ERROR:
desc = "protocol error";
break;
case MPI_IOCSTATUS_SCSI_TASK_TERMINATED:
desc = "task terminated";
break;
case MPI_IOCSTATUS_SCSI_RESIDUAL_MISMATCH:
desc = "residual mismatch";
break;
case MPI_IOCSTATUS_SCSI_TASK_MGMT_FAILED:
desc = "task management failed";
break;
case MPI_IOCSTATUS_SCSI_IOC_TERMINATED:
desc = "IOC terminated";
break;
case MPI_IOCSTATUS_SCSI_EXT_TERMINATED:
desc = "ext terminated";
break;
default:
desc = "";
break;
}
switch (pScsiReply->SCSIStatus)
{
case MPI_SCSI_STATUS_SUCCESS:
desc1 = "success";
break;
case MPI_SCSI_STATUS_CHECK_CONDITION:
desc1 = "check condition";
break;
case MPI_SCSI_STATUS_CONDITION_MET:
desc1 = "condition met";
break;
case MPI_SCSI_STATUS_BUSY:
desc1 = "busy";
break;
case MPI_SCSI_STATUS_INTERMEDIATE:
desc1 = "intermediate";
break;
case MPI_SCSI_STATUS_INTERMEDIATE_CONDMET:
desc1 = "intermediate condmet";
break;
case MPI_SCSI_STATUS_RESERVATION_CONFLICT:
desc1 = "reservation conflict";
break;
case MPI_SCSI_STATUS_COMMAND_TERMINATED:
desc1 = "command terminated";
break;
case MPI_SCSI_STATUS_TASK_SET_FULL:
desc1 = "task set full";
break;
case MPI_SCSI_STATUS_ACA_ACTIVE:
desc1 = "aca active";
break;
case MPI_SCSI_STATUS_FCPEXT_DEVICE_LOGGED_OUT:
desc1 = "fcpext device logged out";
break;
case MPI_SCSI_STATUS_FCPEXT_NO_LINK:
desc1 = "fcpext no link";
break;
case MPI_SCSI_STATUS_FCPEXT_UNASSIGNED:
desc1 = "fcpext unassigned";
break;
default:
desc1 = "";
break;
}
scsi_print_command(sc);
printk(MYIOC_s_DEBUG_FMT "\tfw_channel = %d, fw_id = %d, lun = %d\n",
ioc->name, pScsiReply->Bus, pScsiReply->TargetID, sc->device->lun);
printk(MYIOC_s_DEBUG_FMT "\trequest_len = %d, underflow = %d, "
"resid = %d\n", ioc->name, scsi_bufflen(sc), sc->underflow,
scsi_get_resid(sc));
printk(MYIOC_s_DEBUG_FMT "\ttag = %d, transfer_count = %d, "
"sc->result = %08X\n", ioc->name, le16_to_cpu(pScsiReply->TaskTag),
le32_to_cpu(pScsiReply->TransferCount), sc->result);
printk(MYIOC_s_DEBUG_FMT "\tiocstatus = %s (0x%04x), "
"scsi_status = %s (0x%02x), scsi_state = (0x%02x)\n",
ioc->name, desc, ioc_status, desc1, pScsiReply->SCSIStatus,
pScsiReply->SCSIState);
if (pScsiReply->SCSIState & MPI_SCSI_STATE_AUTOSENSE_VALID) {
skey = sc->sense_buffer[2] & 0x0F;
asc = sc->sense_buffer[12];
ascq = sc->sense_buffer[13];
printk(MYIOC_s_DEBUG_FMT "\t[sense_key,asc,ascq]: "
"[0x%02x,0x%02x,0x%02x]\n", ioc->name, skey, asc, ascq);
}
/*
* Look for + dump FCP ResponseInfo[]!
*/
if (pScsiReply->SCSIState & MPI_SCSI_STATE_RESPONSE_INFO_VALID &&
pScsiReply->ResponseInfo)
printk(MYIOC_s_DEBUG_FMT "response_info = %08xh\n",
ioc->name, le32_to_cpu(pScsiReply->ResponseInfo));
}
#endif
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/*
* mptscsih_io_done - Main SCSI IO callback routine registered to
* Fusion MPT (base) driver
* @ioc: Pointer to MPT_ADAPTER structure
* @mf: Pointer to original MPT request frame
* @r: Pointer to MPT reply frame (NULL if TurboReply)
*
* This routine is called from mpt.c::mpt_interrupt() at the completion
* of any SCSI IO request.
* This routine is registered with the Fusion MPT (base) driver at driver
* load/init time via the mpt_register() API call.
*
* Returns 1 indicating alloc'd request frame ptr should be freed.
*/
int
mptscsih_io_done(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *mr)
{
struct scsi_cmnd *sc;
MPT_SCSI_HOST *hd;
SCSIIORequest_t *pScsiReq;
SCSIIOReply_t *pScsiReply;
u16 req_idx, req_idx_MR;
VirtDevice *vdevice;
VirtTarget *vtarget;
hd = shost_priv(ioc->sh);
req_idx = le16_to_cpu(mf->u.frame.hwhdr.msgctxu.fld.req_idx);
req_idx_MR = (mr != NULL) ?
le16_to_cpu(mr->u.frame.hwhdr.msgctxu.fld.req_idx) : req_idx;
/* Special case, where already freed message frame is received from
* Firmware. It happens with Resetting IOC.
* Return immediately. Do not care
*/
if ((req_idx != req_idx_MR) ||
(le32_to_cpu(mf->u.frame.linkage.arg1) == 0xdeadbeaf))
return 0;
sc = mptscsih_getclear_scsi_lookup(ioc, req_idx);
if (sc == NULL) {
MPIHeader_t *hdr = (MPIHeader_t *)mf;
/* Remark: writeSDP1 will use the ScsiDoneCtx
* If a SCSI I/O cmd, device disabled by OS and
* completion done. Cannot touch sc struct. Just free mem.
*/
if (hdr->Function == MPI_FUNCTION_SCSI_IO_REQUEST)
printk(MYIOC_s_ERR_FMT "NULL ScsiCmd ptr!\n",
ioc->name);
mptscsih_freeChainBuffers(ioc, req_idx);
return 1;
}
if ((unsigned char *)mf != sc->host_scribble) {
mptscsih_freeChainBuffers(ioc, req_idx);
return 1;
}
sc->host_scribble = NULL;
sc->result = DID_OK << 16; /* Set default reply as OK */
pScsiReq = (SCSIIORequest_t *) mf;
pScsiReply = (SCSIIOReply_t *) mr;
if((ioc->facts.MsgVersion >= MPI_VERSION_01_05) && pScsiReply){
dmfprintk(ioc, printk(MYIOC_s_DEBUG_FMT
"ScsiDone (mf=%p,mr=%p,sc=%p,idx=%d,task-tag=%d)\n",
ioc->name, mf, mr, sc, req_idx, pScsiReply->TaskTag));
}else{
dmfprintk(ioc, printk(MYIOC_s_DEBUG_FMT
"ScsiDone (mf=%p,mr=%p,sc=%p,idx=%d)\n",
ioc->name, mf, mr, sc, req_idx));
}
if (pScsiReply == NULL) {
/* special context reply handling */
;
} else {
u32 xfer_cnt;
u16 status;
u8 scsi_state, scsi_status;
u32 log_info;
status = le16_to_cpu(pScsiReply->IOCStatus) & MPI_IOCSTATUS_MASK;
scsi_state = pScsiReply->SCSIState;
scsi_status = pScsiReply->SCSIStatus;
xfer_cnt = le32_to_cpu(pScsiReply->TransferCount);
scsi_set_resid(sc, scsi_bufflen(sc) - xfer_cnt);
log_info = le32_to_cpu(pScsiReply->IOCLogInfo);
/*
* if we get a data underrun indication, yet no data was
* transferred and the SCSI status indicates that the
* command was never started, change the data underrun
* to success
*/
if (status == MPI_IOCSTATUS_SCSI_DATA_UNDERRUN && xfer_cnt == 0 &&
(scsi_status == MPI_SCSI_STATUS_BUSY ||
scsi_status == MPI_SCSI_STATUS_RESERVATION_CONFLICT ||
scsi_status == MPI_SCSI_STATUS_TASK_SET_FULL)) {
status = MPI_IOCSTATUS_SUCCESS;
}
if (scsi_state & MPI_SCSI_STATE_AUTOSENSE_VALID)
mptscsih_copy_sense_data(sc, hd, mf, pScsiReply);
/*
* Look for + dump FCP ResponseInfo[]!
*/
if (scsi_state & MPI_SCSI_STATE_RESPONSE_INFO_VALID &&
pScsiReply->ResponseInfo) {
printk(MYIOC_s_NOTE_FMT "[%d:%d:%d:%d] "
"FCP_ResponseInfo=%08xh\n", ioc->name,
sc->device->host->host_no, sc->device->channel,
sc->device->id, sc->device->lun,
le32_to_cpu(pScsiReply->ResponseInfo));
}
switch(status) {
case MPI_IOCSTATUS_BUSY: /* 0x0002 */
/* CHECKME!
* Maybe: DRIVER_BUSY | SUGGEST_RETRY | DID_SOFT_ERROR (retry)
* But not: DID_BUS_BUSY lest one risk
* killing interrupt handler:-(
*/
sc->result = SAM_STAT_BUSY;
break;
case MPI_IOCSTATUS_SCSI_INVALID_BUS: /* 0x0041 */
case MPI_IOCSTATUS_SCSI_INVALID_TARGETID: /* 0x0042 */
sc->result = DID_BAD_TARGET << 16;
break;
case MPI_IOCSTATUS_SCSI_DEVICE_NOT_THERE: /* 0x0043 */
/* Spoof to SCSI Selection Timeout! */
if (ioc->bus_type != FC)
sc->result = DID_NO_CONNECT << 16;
/* else fibre, just stall until rescan event */
else
sc->result = DID_REQUEUE << 16;
if (hd->sel_timeout[pScsiReq->TargetID] < 0xFFFF)
hd->sel_timeout[pScsiReq->TargetID]++;
vdevice = sc->device->hostdata;
if (!vdevice)
break;
vtarget = vdevice->vtarget;
if (vtarget->tflags & MPT_TARGET_FLAGS_LED_ON) {
mptscsih_issue_sep_command(ioc, vtarget,
MPI_SEP_REQ_SLOTSTATUS_UNCONFIGURED);
vtarget->tflags &= ~MPT_TARGET_FLAGS_LED_ON;
}
break;
case MPI_IOCSTATUS_SCSI_IOC_TERMINATED: /* 0x004B */
if ( ioc->bus_type == SAS ) {
u16 ioc_status = le16_to_cpu(pScsiReply->IOCStatus);
if (ioc_status & MPI_IOCSTATUS_FLAG_LOG_INFO_AVAILABLE) {
if ((log_info & SAS_LOGINFO_MASK)
== SAS_LOGINFO_NEXUS_LOSS) {
sc->result = (DID_BUS_BUSY << 16);
break;
}
}
} else if (ioc->bus_type == FC) {
/*
* The FC IOC may kill a request for variety of
* reasons, some of which may be recovered by a
* retry, some which are unlikely to be
* recovered. Return DID_ERROR instead of
* DID_RESET to permit retry of the command,
* just not an infinite number of them
*/
sc->result = DID_ERROR << 16;
break;
}
/*
* Allow non-SAS & non-NEXUS_LOSS to drop into below code
*/
case MPI_IOCSTATUS_SCSI_TASK_TERMINATED: /* 0x0048 */
/* Linux handles an unsolicited DID_RESET better
* than an unsolicited DID_ABORT.
*/
sc->result = DID_RESET << 16;
case MPI_IOCSTATUS_SCSI_EXT_TERMINATED: /* 0x004C */
if (ioc->bus_type == FC)
sc->result = DID_ERROR << 16;
else
sc->result = DID_RESET << 16;
break;
case MPI_IOCSTATUS_SCSI_RESIDUAL_MISMATCH: /* 0x0049 */
scsi_set_resid(sc, scsi_bufflen(sc) - xfer_cnt);
if((xfer_cnt==0)||(sc->underflow > xfer_cnt))
sc->result=DID_SOFT_ERROR << 16;
else /* Sufficient data transfer occurred */
sc->result = (DID_OK << 16) | scsi_status;
dreplyprintk(ioc, printk(MYIOC_s_DEBUG_FMT
"RESIDUAL_MISMATCH: result=%x on channel=%d id=%d\n",
ioc->name, sc->result, sc->device->channel, sc->device->id));
break;
case MPI_IOCSTATUS_SCSI_DATA_UNDERRUN: /* 0x0045 */
/*
* Do upfront check for valid SenseData and give it
* precedence!
*/
sc->result = (DID_OK << 16) | scsi_status;
if (scsi_state & MPI_SCSI_STATE_AUTOSENSE_VALID) {
/* Have already saved the status and sense data
*/
;
} else {
if (xfer_cnt < sc->underflow) {
if (scsi_status == SAM_STAT_BUSY)
sc->result = SAM_STAT_BUSY;
else
sc->result = DID_SOFT_ERROR << 16;
}
if (scsi_state & (MPI_SCSI_STATE_AUTOSENSE_FAILED | MPI_SCSI_STATE_NO_SCSI_STATUS)) {
/* What to do?
*/
sc->result = DID_SOFT_ERROR << 16;
}
else if (scsi_state & MPI_SCSI_STATE_TERMINATED) {
/* Not real sure here either... */
sc->result = DID_RESET << 16;
}
}
dreplyprintk(ioc, printk(MYIOC_s_DEBUG_FMT
" sc->underflow={report ERR if < %02xh bytes xfer'd}\n",
ioc->name, sc->underflow));
dreplyprintk(ioc, printk(MYIOC_s_DEBUG_FMT
" ActBytesXferd=%02xh\n", ioc->name, xfer_cnt));
/* Report Queue Full
*/
if (scsi_status == MPI_SCSI_STATUS_TASK_SET_FULL)
mptscsih_report_queue_full(sc, pScsiReply, pScsiReq);
break;
case MPI_IOCSTATUS_SCSI_DATA_OVERRUN: /* 0x0044 */
scsi_set_resid(sc, 0);
case MPI_IOCSTATUS_SCSI_RECOVERED_ERROR: /* 0x0040 */
case MPI_IOCSTATUS_SUCCESS: /* 0x0000 */
sc->result = (DID_OK << 16) | scsi_status;
if (scsi_state == 0) {
;
} else if (scsi_state & MPI_SCSI_STATE_AUTOSENSE_VALID) {
/*
* If running against circa 200003dd 909 MPT f/w,
* may get this (AUTOSENSE_VALID) for actual TASK_SET_FULL
* (QUEUE_FULL) returned from device! --> get 0x0000?128
* and with SenseBytes set to 0.
*/
if (pScsiReply->SCSIStatus == MPI_SCSI_STATUS_TASK_SET_FULL)
mptscsih_report_queue_full(sc, pScsiReply, pScsiReq);
}
else if (scsi_state &
(MPI_SCSI_STATE_AUTOSENSE_FAILED | MPI_SCSI_STATE_NO_SCSI_STATUS)
) {
/*
* What to do?
*/
sc->result = DID_SOFT_ERROR << 16;
}
else if (scsi_state & MPI_SCSI_STATE_TERMINATED) {
/* Not real sure here either... */
sc->result = DID_RESET << 16;
}
else if (scsi_state & MPI_SCSI_STATE_QUEUE_TAG_REJECTED) {
/* Device Inq. data indicates that it supports
* QTags, but rejects QTag messages.
* This command completed OK.
*
* Not real sure here either so do nothing... */
}
if (sc->result == MPI_SCSI_STATUS_TASK_SET_FULL)
mptscsih_report_queue_full(sc, pScsiReply, pScsiReq);
/* Add handling of:
* Reservation Conflict, Busy,
* Command Terminated, CHECK
*/
break;
case MPI_IOCSTATUS_SCSI_PROTOCOL_ERROR: /* 0x0047 */
sc->result = DID_SOFT_ERROR << 16;
break;
case MPI_IOCSTATUS_INVALID_FUNCTION: /* 0x0001 */
case MPI_IOCSTATUS_INVALID_SGL: /* 0x0003 */
case MPI_IOCSTATUS_INTERNAL_ERROR: /* 0x0004 */
case MPI_IOCSTATUS_RESERVED: /* 0x0005 */
case MPI_IOCSTATUS_INSUFFICIENT_RESOURCES: /* 0x0006 */
case MPI_IOCSTATUS_INVALID_FIELD: /* 0x0007 */
case MPI_IOCSTATUS_INVALID_STATE: /* 0x0008 */
case MPI_IOCSTATUS_SCSI_IO_DATA_ERROR: /* 0x0046 */
case MPI_IOCSTATUS_SCSI_TASK_MGMT_FAILED: /* 0x004A */
default:
/*
* What to do?
*/
sc->result = DID_SOFT_ERROR << 16;
break;
} /* switch(status) */
#ifdef CONFIG_FUSION_LOGGING
if (sc->result && (ioc->debug_level & MPT_DEBUG_REPLY))
mptscsih_info_scsiio(ioc, sc, pScsiReply);
#endif
} /* end of address reply case */
/* Unmap the DMA buffers, if any. */
scsi_dma_unmap(sc);
sc->scsi_done(sc); /* Issue the command callback */
/* Free Chain buffers */
mptscsih_freeChainBuffers(ioc, req_idx);
return 1;
}
/*
* mptscsih_flush_running_cmds - For each command found, search
* Scsi_Host instance taskQ and reply to OS.
* Called only if recovering from a FW reload.
* @hd: Pointer to a SCSI HOST structure
*
* Returns: None.
*
* Must be called while new I/Os are being queued.
*/
static void
mptscsih_flush_running_cmds(MPT_SCSI_HOST *hd)
{
MPT_ADAPTER *ioc = hd->ioc;
struct scsi_cmnd *sc;
SCSIIORequest_t *mf = NULL;
int ii;
int channel, id;
for (ii= 0; ii < ioc->req_depth; ii++) {
sc = mptscsih_getclear_scsi_lookup(ioc, ii);
if (!sc)
continue;
mf = (SCSIIORequest_t *)MPT_INDEX_2_MFPTR(ioc, ii);
if (!mf)
continue;
channel = mf->Bus;
id = mf->TargetID;
mptscsih_freeChainBuffers(ioc, ii);
mpt_free_msg_frame(ioc, (MPT_FRAME_HDR *)mf);
if ((unsigned char *)mf != sc->host_scribble)
continue;
scsi_dma_unmap(sc);
sc->result = DID_RESET << 16;
sc->host_scribble = NULL;
dtmprintk(ioc, sdev_printk(KERN_INFO, sc->device, MYIOC_s_FMT
"completing cmds: fw_channel %d, fw_id %d, sc=%p, mf = %p, "
"idx=%x\n", ioc->name, channel, id, sc, mf, ii));
sc->scsi_done(sc);
}
}
/*
* mptscsih_search_running_cmds - Delete any commands associated
* with the specified target and lun. Function called only
* when a lun is disable by mid-layer.
* Do NOT access the referenced scsi_cmnd structure or
* members. Will cause either a paging or NULL ptr error.
* (BUT, BUT, BUT, the code does reference it! - mdr)
* @hd: Pointer to a SCSI HOST structure
* @vdevice: per device private data
*
* Returns: None.
*
* Called from slave_destroy.
*/
static void
mptscsih_search_running_cmds(MPT_SCSI_HOST *hd, VirtDevice *vdevice)
{
SCSIIORequest_t *mf = NULL;
int ii;
struct scsi_cmnd *sc;
struct scsi_lun lun;
MPT_ADAPTER *ioc = hd->ioc;
unsigned long flags;
spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
for (ii = 0; ii < ioc->req_depth; ii++) {
if ((sc = ioc->ScsiLookup[ii]) != NULL) {
mf = (SCSIIORequest_t *)MPT_INDEX_2_MFPTR(ioc, ii);
if (mf == NULL)
continue;
/* If the device is a hidden raid component, then its
* expected that the mf->function will be RAID_SCSI_IO
*/
if (vdevice->vtarget->tflags &
MPT_TARGET_FLAGS_RAID_COMPONENT && mf->Function !=
MPI_FUNCTION_RAID_SCSI_IO_PASSTHROUGH)
continue;
int_to_scsilun(vdevice->lun, &lun);
if ((mf->Bus != vdevice->vtarget->channel) ||
(mf->TargetID != vdevice->vtarget->id) ||
memcmp(lun.scsi_lun, mf->LUN, 8))
continue;
if ((unsigned char *)mf != sc->host_scribble)
continue;
ioc->ScsiLookup[ii] = NULL;
spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
mptscsih_freeChainBuffers(ioc, ii);
mpt_free_msg_frame(ioc, (MPT_FRAME_HDR *)mf);
scsi_dma_unmap(sc);
sc->host_scribble = NULL;