From: Suganath Prabu S <suganath-prabu.subram...@broadcom.com>
Problem Statement:
Sending I/O through 32 bit descriptors to Ventura series of controller
results in IO timeout on certain conditions.
This error only occurs on systems with high I/O activity on
Ventura series controllers.
Changes in this patch will prevent driver from using 32 bit descriptor
and use 64 bit Descriptors.
Cc: <sta...@vger.kernel.org>
Signed-off-by: Suganath Prabu S <suganath-prabu.subram...@broadcom.com>
Signed-off-by: Shivasharan S <shivasharan.srikanteshw...@broadcom.com>
---
drivers/scsi/mpt3sas/mpt3sas_base.c | 121 ------------------------------------
drivers/scsi/mpt3sas/mpt3sas_base.h | 1 -
2 files changed, 122 deletions(-)
diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c
b/drivers/scsi/mpt3sas/mpt3sas_base.c
index 13d6e4e..6051469 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_base.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_base.c
@@ -3108,116 +3108,6 @@ _base_put_smid_default(struct MPT3SAS_ADAPTER *ioc, u16
smid)
}
/**
-* _base_put_smid_scsi_io_atomic - send SCSI_IO request to firmware using
-* Atomic Request Descriptor
-* @ioc: per adapter object
-* @smid: system request message index
-* @handle: device handle, unused in this function, for function type match
-*
-* Return nothing.
-*/
-static void
-_base_put_smid_scsi_io_atomic(struct MPT3SAS_ADAPTER *ioc, u16 smid,
- u16 handle)
-{
- Mpi26AtomicRequestDescriptor_t descriptor;
- u32 *request = (u32 *)&descriptor;
-
- descriptor.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO;
- descriptor.MSIxIndex = _base_get_msix_index(ioc);
- descriptor.SMID = cpu_to_le16(smid);
-
- writel(cpu_to_le32(*request), &ioc->chip->AtomicRequestDescriptorPost);
-}
-
-/**
- * _base_put_smid_fast_path_atomic - send fast path request to firmware
- * using Atomic Request Descriptor
- * @ioc: per adapter object
- * @smid: system request message index
- * @handle: device handle, unused in this function, for function type match
- * Return nothing
- */
-static void
-_base_put_smid_fast_path_atomic(struct MPT3SAS_ADAPTER *ioc, u16 smid,
- u16 handle)
-{
- Mpi26AtomicRequestDescriptor_t descriptor;
- u32 *request = (u32 *)&descriptor;
-
- descriptor.RequestFlags = MPI25_REQ_DESCRIPT_FLAGS_FAST_PATH_SCSI_IO;
- descriptor.MSIxIndex = _base_get_msix_index(ioc);
- descriptor.SMID = cpu_to_le16(smid);
-
- writel(cpu_to_le32(*request), &ioc->chip->AtomicRequestDescriptorPost);
-}
-
-/**
- * _base_put_smid_hi_priority_atomic - send Task Management request to
- * firmware using Atomic Request Descriptor
- * @ioc: per adapter object
- * @smid: system request message index
- * @msix_task: msix_task will be same as msix of IO incase of task abort else 0
- *
- * Return nothing.
- */
-static void
-_base_put_smid_hi_priority_atomic(struct MPT3SAS_ADAPTER *ioc, u16 smid,
- u16 msix_task)
-{
- Mpi26AtomicRequestDescriptor_t descriptor;
- u32 *request = (u32 *)&descriptor;
-
- descriptor.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY;
- descriptor.MSIxIndex = msix_task;
- descriptor.SMID = cpu_to_le16(smid);
-
- writel(cpu_to_le32(*request), &ioc->chip->AtomicRequestDescriptorPost);
-}
-
-/**
- * _base_put_smid_nvme_encap_atomic - send NVMe encapsulated request to
- * firmware using Atomic Request Descriptor
- * @ioc: per adapter object
- * @smid: system request message index
- *
- * Return nothing.
- */
-static void
-_base_put_smid_nvme_encap_atomic(struct MPT3SAS_ADAPTER *ioc, u16 smid)
-{
- Mpi26AtomicRequestDescriptor_t descriptor;
- u32 *request = (u32 *)&descriptor;
-
- descriptor.RequestFlags = MPI26_REQ_DESCRIPT_FLAGS_PCIE_ENCAPSULATED;
- descriptor.MSIxIndex = _base_get_msix_index(ioc);
- descriptor.SMID = cpu_to_le16(smid);
-
- writel(cpu_to_le32(*request), &ioc->chip->AtomicRequestDescriptorPost);
-}
-
-/**
- * _base_put_smid_default - Default, primarily used for config pages
- * use Atomic Request Descriptor
- * @ioc: per adapter object
- * @smid: system request message index
- *
- * Return nothing.
- */
-static void
-_base_put_smid_default_atomic(struct MPT3SAS_ADAPTER *ioc, u16 smid)
-{
- Mpi26AtomicRequestDescriptor_t descriptor;
- u32 *request = (u32 *)&descriptor;
-
- descriptor.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_DEFAULT_TYPE;
- descriptor.MSIxIndex = _base_get_msix_index(ioc);
- descriptor.SMID = cpu_to_le16(smid);
-
- writel(cpu_to_le32(*request), &ioc->chip->AtomicRequestDescriptorPost);
-}
-
-/**
* _base_display_OEMs_branding - Display branding string
* @ioc: per adapter object
*
@@ -5071,8 +4961,6 @@ _base_get_ioc_facts(struct MPT3SAS_ADAPTER *ioc)
if ((facts->IOCCapabilities &
MPI2_IOCFACTS_CAPABILITY_RDPQ_ARRAY_CAPABLE) && (!reset_devices))
ioc->rdpq_array_capable = 1;
- if (facts->IOCCapabilities & MPI26_IOCFACTS_CAPABILITY_ATOMIC_REQ)
- ioc->atomic_desc_capable = 1;
facts->FWVersion.Word = le32_to_cpu(mpi_reply.FWVersion.Word);
facts->IOCRequestFrameSize =
le16_to_cpu(mpi_reply.IOCRequestFrameSize);
@@ -6006,20 +5894,11 @@ mpt3sas_base_attach(struct MPT3SAS_ADAPTER *ioc)
break;
}
- if (ioc->atomic_desc_capable) {
- ioc->put_smid_default = &_base_put_smid_default_atomic;
- ioc->put_smid_scsi_io = &_base_put_smid_scsi_io_atomic;
- ioc->put_smid_fast_path = &_base_put_smid_fast_path_atomic;
- ioc->put_smid_hi_priority = &_base_put_smid_hi_priority_atomic;
- ioc->put_smid_nvme_encap = &_base_put_smid_nvme_encap_atomic;
- } else {
ioc->put_smid_default = &_base_put_smid_default;
ioc->put_smid_scsi_io = &_base_put_smid_scsi_io;
ioc->put_smid_fast_path = &_base_put_smid_fast_path;
ioc->put_smid_hi_priority = &_base_put_smid_hi_priority;
ioc->put_smid_nvme_encap = &_base_put_smid_nvme_encap;
- }
-
/*
* These function pointers for other requests that don't
diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.h
b/drivers/scsi/mpt3sas/mpt3sas_base.h
index 789bc42..3324392 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_base.h
+++ b/drivers/scsi/mpt3sas/mpt3sas_base.h
@@ -1348,7 +1348,6 @@ struct MPT3SAS_ADAPTER {
void *device_remove_in_progress;
u16 device_remove_in_progress_sz;
u8 is_gen35_ioc;
- u8 atomic_desc_capable;
PUT_SMID_IO_FP_HIP put_smid_scsi_io;
PUT_SMID_IO_FP_HIP put_smid_fast_path;
PUT_SMID_IO_FP_HIP put_smid_hi_priority;
--
2.5.5
