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

[linux-2.6-block.git] / drivers / scsi / mpt3sas / mpt3sas_base.c

diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c
index 62dc312b82a7b4baf6e1960f9ee20eab5f961727..2b33e48eea9015a9e7e249a37266b7f6c29e7a86 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);