From 42081173c74e0867b996f5fd6b46d3c1606377c7 Mon Sep 17 00:00:00 2001
From: Sreekanth Reddy <sreekanth.reddy@avagotech.com>
Date: Wed, 11 Nov 2015 17:30:26 +0530
Subject: [PATCH] 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>
---
drivers/scsi/mpt3sas/mpt3sas_base.c | 39 +++++++++++++++-------------
drivers/scsi/mpt3sas/mpt3sas_base.h | 3 +++
drivers/scsi/mpt3sas/mpt3sas_scsih.c | 7 +++++
3 files changed, 31 insertions(+), 18 deletions(-)
diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c
index 62dc312b82a7b4..2b33e48eea9015 100644
--- 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 4c9a1546d50cbf..08f46a7bb00c20 100644
--- 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 80469d0a384385..2b51a414a3801a 100644
--- 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;
}
}
--
GitLab