[SCSI] fusion - move SPI API over to mptspi.c

Move some functions that only apply to the mptspi module over from mptscsih.c

Signed-off-by: Eric Moore <Eric.Moore@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 267 insertions, 1 deletions

diff --git a/drivers/message/fusion/mptspi.c b/drivers/message/fusion/mptspi.c
index aec0c2fe221f..4896d7cc681a 100644
--- a/drivers/message/fusion/mptspi.c
+++ b/drivers/message/fusion/mptspi.c
@@ -95,6 +95,269 @@ static int	mptspiDoneCtx = -1;
 static int      mptspiTaskCtx = -1;
 static int      mptspiInternalCtx = -1; /* Used only for internal commands */
 
+/**
+ *      mptspi_setTargetNegoParms  - Update the target negotiation
+ *      parameters based on the the Inquiry data, adapter capabilities,
+ *      and NVRAM settings
+ *
+ *      @hd: Pointer to a SCSI Host Structure
+ *      @vtarget: per target private data
+ *      @sdev: SCSI device
+ *
+ **/
+static void
+mptspi_setTargetNegoParms(MPT_SCSI_HOST *hd, VirtTarget *target,
+                            struct scsi_device *sdev)
+{
+        SpiCfgData *pspi_data = &hd->ioc->spi_data;
+        int  id = (int) target->id;
+        int  nvram;
+        u8 width = MPT_NARROW;
+        u8 factor = MPT_ASYNC;
+        u8 offset = 0;
+        u8 nfactor;
+        u8 noQas = 1;
+
+        target->negoFlags = pspi_data->noQas;
+
+        if (sdev->scsi_level < SCSI_2) {
+                width = 0;
+                factor = MPT_ULTRA2;
+                offset = pspi_data->maxSyncOffset;
+                target->tflags &= ~MPT_TARGET_FLAGS_Q_YES;
+        } else {
+                if (scsi_device_wide(sdev))
+                        width = 1;
+
+                if (scsi_device_sync(sdev)) {
+                        factor = pspi_data->minSyncFactor;
+                        if (!scsi_device_dt(sdev))
+                                        factor = MPT_ULTRA2;
+                        else {
+                                if (!scsi_device_ius(sdev) &&
+                                    !scsi_device_qas(sdev))
+                                        factor = MPT_ULTRA160;
+                                else {
+                                        factor = MPT_ULTRA320;
+                                        if (scsi_device_qas(sdev)) {
+                                                ddvprintk((KERN_INFO "Enabling QAS due to byte56=%02x on id=%d!\n", scsi_device_qas(sdev), id));
+                                                noQas = 0;
+                                        }
+                                        if (sdev->type == TYPE_TAPE &&
+                                            scsi_device_ius(sdev))
+                                                target->negoFlags |= MPT_TAPE_NEGO_IDP;
+                                }
+                        }
+                        offset = pspi_data->maxSyncOffset;
+
+                        /* If RAID, never disable QAS
+                         * else if non RAID, do not disable
+                         *   QAS if bit 1 is set
+                         * bit 1 QAS support, non-raid only
+                         * bit 0 IU support
+                         */
+                        if (target->raidVolume == 1)
+                                noQas = 0;
+                } else {
+                        factor = MPT_ASYNC;
+                        offset = 0;
+                }
+        }
+
+        if (!sdev->tagged_supported)
+                target->tflags &= ~MPT_TARGET_FLAGS_Q_YES;
+
+        /* Update tflags based on NVRAM settings. (SCSI only)
+         */
+        if (pspi_data->nvram && (pspi_data->nvram[id] != MPT_HOST_NVRAM_INVALID)) {
+                nvram = pspi_data->nvram[id];
+                nfactor = (nvram & MPT_NVRAM_SYNC_MASK) >> 8;
+
+                if (width)
+                        width = nvram & MPT_NVRAM_WIDE_DISABLE ? 0 : 1;
+
+                if (offset > 0) {
+                        /* Ensure factor is set to the
+                         * maximum of: adapter, nvram, inquiry
+                         */
+                        if (nfactor) {
+                                if (nfactor < pspi_data->minSyncFactor )
+                                        nfactor = pspi_data->minSyncFactor;
+
+                                factor = max(factor, nfactor);
+                                if (factor == MPT_ASYNC)
+                                        offset = 0;
+                        } else {
+                                offset = 0;
+                                factor = MPT_ASYNC;
+                }
+                } else {
+                        factor = MPT_ASYNC;
+                }
+        }
+
+        /* Make sure data is consistent
+         */
+        if ((!width) && (factor < MPT_ULTRA2))
+                factor = MPT_ULTRA2;
+
+        /* Save the data to the target structure.
+         */
+        target->minSyncFactor = factor;
+        target->maxOffset = offset;
+        target->maxWidth = width;
+
+        target->tflags |= MPT_TARGET_FLAGS_VALID_NEGO;
+
+        /* Disable unused features.
+         */
+        if (!width)
+                target->negoFlags |= MPT_TARGET_NO_NEGO_WIDE;
+
+        if (!offset)
+                target->negoFlags |= MPT_TARGET_NO_NEGO_SYNC;
+
+        if ( factor > MPT_ULTRA320 )
+                noQas = 0;
+
+        if (noQas && (pspi_data->noQas == 0)) {
+                pspi_data->noQas |= MPT_TARGET_NO_NEGO_QAS;
+                target->negoFlags |= MPT_TARGET_NO_NEGO_QAS;
+
+                /* Disable QAS in a mixed configuration case
+                 */
+
+                ddvprintk((KERN_INFO "Disabling QAS due to noQas=%02x on id=%d!\n", noQas, id));
+        }
+}
+
+/**
+ *      mptspi_writeIOCPage4  - write IOC Page 4
+ *      @hd: Pointer to a SCSI Host Structure
+ *      @channel:
+ *      @id: write IOC Page4 for this ID & Bus
+ *
+ *      Return: -EAGAIN if unable to obtain a Message Frame
+ *              or 0 if success.
+ *
+ *      Remark: We do not wait for a return, write pages sequentially.
+ **/
+static int
+mptspi_writeIOCPage4(MPT_SCSI_HOST *hd, u8 channel , u8 id)
+{
+        MPT_ADAPTER             *ioc = hd->ioc;
+        Config_t                *pReq;
+        IOCPage4_t              *IOCPage4Ptr;
+        MPT_FRAME_HDR           *mf;
+        dma_addr_t               dataDma;
+        u16                      req_idx;
+        u32                      frameOffset;
+        u32                      flagsLength;
+        int                      ii;
+
+        /* Get a MF for this command.
+         */
+        if ((mf = mpt_get_msg_frame(ioc->DoneCtx, ioc)) == NULL) {
+                dfailprintk((MYIOC_s_WARN_FMT "writeIOCPage4 : no msg frames!\n",
+                                        ioc->name));
+                return -EAGAIN;
+        }
+
+        /* Set the request and the data pointers.
+         * Place data at end of MF.
+         */
+        pReq = (Config_t *)mf;
+
+        req_idx = le16_to_cpu(mf->u.frame.hwhdr.msgctxu.fld.req_idx);
+        frameOffset = ioc->req_sz - sizeof(IOCPage4_t);
+
+        /* Complete the request frame (same for all requests).
+         */
+        pReq->Action = MPI_CONFIG_ACTION_PAGE_WRITE_CURRENT;
+        pReq->Reserved = 0;
+        pReq->ChainOffset = 0;
+        pReq->Function = MPI_FUNCTION_CONFIG;
+        pReq->ExtPageLength = 0;
+        pReq->ExtPageType = 0;
+        pReq->MsgFlags = 0;
+        for (ii=0; ii < 8; ii++) {
+                pReq->Reserved2[ii] = 0;
+        }
+
+        IOCPage4Ptr = ioc->spi_data.pIocPg4;
+        dataDma = ioc->spi_data.IocPg4_dma;
+        ii = IOCPage4Ptr->ActiveSEP++;
+        IOCPage4Ptr->SEP[ii].SEPTargetID = id;
+        IOCPage4Ptr->SEP[ii].SEPBus = channel;
+        pReq->Header = IOCPage4Ptr->Header;
+        pReq->PageAddress = cpu_to_le32(id | (channel << 8 ));
+
+        /* Add a SGE to the config request.
+         */
+        flagsLength = MPT_SGE_FLAGS_SSIMPLE_WRITE |
+                (IOCPage4Ptr->Header.PageLength + ii) * 4;
+
+        mpt_add_sge((char *)&pReq->PageBufferSGE, flagsLength, dataDma);
+
+        ddvprintk((MYIOC_s_INFO_FMT
+                "writeIOCPage4: MaxSEP=%d ActiveSEP=%d id=%d bus=%d\n",
+                        ioc->name, IOCPage4Ptr->MaxSEP, IOCPage4Ptr->ActiveSEP, id, channel));
+
+        mpt_put_msg_frame(ioc->DoneCtx, ioc, mf);
+
+        return 0;
+}
+
+/**
+ *      mptspi_initTarget - Target, LUN alloc/free functionality.
+ *      @hd: Pointer to MPT_SCSI_HOST structure
+ *      @vtarget: per target private data
+ *      @sdev: SCSI device
+ *
+ *      NOTE: It's only SAFE to call this routine if data points to
+ *      sane & valid STANDARD INQUIRY data!
+ *
+ *      Allocate and initialize memory for this target.
+ *      Save inquiry data.
+ *
+ **/
+static void
+mptspi_initTarget(MPT_SCSI_HOST *hd, VirtTarget *vtarget,
+                    struct scsi_device *sdev)
+{
+
+        /* Is LUN supported? If so, upper 2 bits will be 0
+        * in first byte of inquiry data.
+        */
+        if (sdev->inq_periph_qual != 0)
+                return;
+
+        if (vtarget == NULL)
+                return;
+
+        vtarget->type = sdev->type;
+
+        if ((sdev->type == TYPE_PROCESSOR) && (hd->ioc->spi_data.Saf_Te)) {
+                /* Treat all Processors as SAF-TE if
+                 * command line option is set */
+                vtarget->tflags |= MPT_TARGET_FLAGS_SAF_TE_ISSUED;
+                mptspi_writeIOCPage4(hd, vtarget->channel, vtarget->id);
+        }else if ((sdev->type == TYPE_PROCESSOR) &&
+                !(vtarget->tflags & MPT_TARGET_FLAGS_SAF_TE_ISSUED )) {
+                if (sdev->inquiry_len > 49 ) {
+                        if (sdev->inquiry[44] == 'S' &&
+                            sdev->inquiry[45] == 'A' &&
+                            sdev->inquiry[46] == 'F' &&
+                            sdev->inquiry[47] == '-' &&
+                            sdev->inquiry[48] == 'T' &&
+                            sdev->inquiry[49] == 'E' ) {
+                                vtarget->tflags |= MPT_TARGET_FLAGS_SAF_TE_ISSUED;
+                                mptspi_writeIOCPage4(hd, vtarget->channel, vtarget->id);
+                        }
+                }
+        }
+        mptspi_setTargetNegoParms(hd, vtarget, sdev);
+}
 
 /**
  *      mptspi_is_raid - Determines whether target is belonging to volume
@@ -408,13 +671,16 @@ static int mptspi_slave_alloc(struct scsi_device *sdev)
 
 static int mptspi_slave_configure(struct scsi_device *sdev)
 {
-        int ret = mptscsih_slave_configure(sdev);
         struct _MPT_SCSI_HOST *hd =
                 (struct _MPT_SCSI_HOST *)sdev->host->hostdata;
+        VirtTarget *vtarget = scsi_target(sdev)->hostdata;
+        int ret = mptscsih_slave_configure(sdev);
 
         if (ret)
                 return ret;
 
+        mptspi_initTarget(hd, vtarget, sdev);
+
         if ((sdev->channel == 1 ||
              !(mptspi_is_raid(hd, sdev->id))) &&
             !spi_initial_dv(sdev->sdev_target))