mpt3sas: Manage MSI-X vectors according to HBA device type

1. Do not enable MSI-X vectors for SAS2008 B0 controllers

2. Enable a single MSI-X vector for the following controller:

   a. SAS2004
   b. SAS2008
   c. SAS2008_1
   d. SAS2008_2
   e. SAS2008_3
   f. SAS2116_1
   g. SAS2116_2

3. Enable Combined Reply Post Queue Support (i.e. 96 MSI-X vectors)
   for Gen3 Invader/Fury C0 and above revision HBAs

4. Enable Combined Reply Post Queue Support (i.e. 96 MSI-X vectors)
   for all Intruder and Cutlass HBAs

Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@avagotech.com>
Acked-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c
index 62dc312..2b33e48 100644 (file)
--- a/drivers/scsi/mpt3sas/mpt3sas_base.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_base.c
@@ -1712,6 +1712,14 @@ _base_check_enable_msix(struct MPT3SAS_ADAPTER *ioc)
        int base;
        u16 message_control;
 
+       /* Check whether controller SAS2008 B0 controller,
+        * if it is SAS2008 B0 controller use IO-APIC instead of MSIX
+        */
+       if (ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2008 &&
+           ioc->pdev->revision == SAS2_PCI_DEVICE_B0_REVISION) {
+               return -EINVAL;
+       }
+
        base = pci_find_capability(ioc->pdev, PCI_CAP_ID_MSIX);
        if (!base) {
                dfailprintk(ioc, pr_info(MPT3SAS_FMT "msix not supported\n",
@@ -1720,9 +1728,19 @@ _base_check_enable_msix(struct MPT3SAS_ADAPTER *ioc)
        }
 
        /* get msix vector count */
-
-       pci_read_config_word(ioc->pdev, base + 2, &message_control);
-       ioc->msix_vector_count = (message_control & 0x3FF) + 1;
+       /* NUMA_IO not supported for older controllers */
+       if (ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2004 ||
+           ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2008 ||
+           ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2108_1 ||
+           ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2108_2 ||
+           ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2108_3 ||
+           ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2116_1 ||
+           ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2116_2)
+               ioc->msix_vector_count = 1;
+       else {
+               pci_read_config_word(ioc->pdev, base + 2, &message_control);
+               ioc->msix_vector_count = (message_control & 0x3FF) + 1;
+       }
        dinitprintk(ioc, pr_info(MPT3SAS_FMT
                "msix is supported, vector_count(%d)\n",
                ioc->name, ioc->msix_vector_count));
@@ -4979,7 +4997,6 @@ mpt3sas_base_attach(struct MPT3SAS_ADAPTER *ioc)
 {
        int r, i;
        int cpu_id, last_cpu_id = 0;
-       u8 revision;
 
        dinitprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
            __func__));
@@ -4999,20 +5016,6 @@ mpt3sas_base_attach(struct MPT3SAS_ADAPTER *ioc)
                goto out_free_resources;
        }
 
-       /* Check whether the controller revision is C0 or above.
-        * only C0 and above revision controllers support 96 MSI-X vectors.
-        */
-       revision = ioc->pdev->revision;
-
-       if ((ioc->pdev->device == MPI25_MFGPAGE_DEVID_SAS3004 ||
-            ioc->pdev->device == MPI25_MFGPAGE_DEVID_SAS3008 ||
-            ioc->pdev->device == MPI25_MFGPAGE_DEVID_SAS3108_1 ||
-            ioc->pdev->device == MPI25_MFGPAGE_DEVID_SAS3108_2 ||
-            ioc->pdev->device == MPI25_MFGPAGE_DEVID_SAS3108_5 ||
-            ioc->pdev->device == MPI25_MFGPAGE_DEVID_SAS3108_6) &&
-            (revision >= 0x02))
-               ioc->msix96_vector = 1;
-
        ioc->rdpq_array_enable_assigned = 0;
        ioc->dma_mask = 0;
        r = mpt3sas_base_map_resources(ioc);

diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.h b/drivers/scsi/mpt3sas/mpt3sas_base.h
index 4c9a154..08f46a7 100644 (file)
--- a/drivers/scsi/mpt3sas/mpt3sas_base.h
+++ b/drivers/scsi/mpt3sas/mpt3sas_base.h
@@ -142,6 +142,9 @@
 #define MPT_TARGET_FLAGS_DELETED       0x04
 #define MPT_TARGET_FASTPATH_IO         0x08
 
+#define SAS2_PCI_DEVICE_B0_REVISION    (0x01)
+#define SAS3_PCI_DEVICE_C0_REVISION    (0x02)
+
 /*
  * Intel HBA branding
  */

diff --git a/drivers/scsi/mpt3sas/mpt3sas_scsih.c b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
index 80469d0..2b51a41 100644 (file)
--- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
@@ -7938,6 +7938,13 @@ _scsih_determine_hba_mpi_version(struct MPT3SAS_ADAPTER *ioc) {
        case MPI25_MFGPAGE_DEVID_SAS3108_5:
        case MPI25_MFGPAGE_DEVID_SAS3108_6:
                ioc->hba_mpi_version_belonged = MPI25_VERSION;
+
+               /* Check whether the controller revision is C0 or above.
+                * only C0 and above revision controllers support 96 MSI-X
+                * vectors.
+                */
+               if (ioc->pdev->revision >= SAS3_PCI_DEVICE_C0_REVISION)
+                       ioc->msix96_vector = 1;
                break;
        }
 }