[PATCH 0/3] Driver version update to 07.725.01.00-rc1

[PATCH 0/3] Driver version update to 07.725.01.00-rc1

[Chandrakanth Patil]

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This patchset contains two critical fixes.

Chandrakanth Patil (3):
  megaraid_sas: Update max supported LD IDs to 240
  megaraid_sas: Add crash dump mode capability bit in MFI capabilities
  Driver version update to 07.725.01.00-rc1

 drivers/scsi/megaraid/megaraid_sas.h        | 12 ++++++++----
 drivers/scsi/megaraid/megaraid_sas_fp.c     |  2 +-
 drivers/scsi/megaraid/megaraid_sas_fusion.c |  3 +++
 3 files changed, 12 insertions(+), 5 deletions(-)

-- 
2.31.1


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[PATCH 1/3] megaraid_sas: Update max supported LD IDs to 240

[Chandrakanth Patil]

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As of now, The firmware only supports LD IDs up to 240, and LD ID 255
(0xFF) being reserved for deleted LDs. However, in some cases, firmware
was assigning LD ID 254 (0xFE) to deleted LDs which was causing the
driver to delete the wrong LD.

To address this issue, the driver updated the LD ID check from 255 to
240, This ensures the deleted LD ID properly identifies and removed by
the driver without accidently deleting the valid LDs.

Signed-off-by: Chandrakanth Patil <chandrakanth.patil@broadcom.com>
Signed-off-by: Sumit Saxena <sumit.saxena@broadcom.com>
---
 drivers/scsi/megaraid/megaraid_sas.h    | 2 ++
 drivers/scsi/megaraid/megaraid_sas_fp.c | 2 +-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h
index 4919ea54b827..2ef9d41fc6f4 100644
--- a/drivers/scsi/megaraid/megaraid_sas.h
+++ b/drivers/scsi/megaraid/megaraid_sas.h
@@ -1519,6 +1519,8 @@ struct megasas_ctrl_info {
 #define MEGASAS_MAX_LD_IDS			(MEGASAS_MAX_LD_CHANNELS * \
 						MEGASAS_MAX_DEV_PER_CHANNEL)
 
+#define MEGASAS_MAX_SUPPORTED_LD_IDS		240
+
 #define MEGASAS_MAX_SECTORS                    (2*1024)
 #define MEGASAS_MAX_SECTORS_IEEE		(2*128)
 #define MEGASAS_DBG_LVL				1
diff --git a/drivers/scsi/megaraid/megaraid_sas_fp.c b/drivers/scsi/megaraid/megaraid_sas_fp.c
index da1cad1ee123..4463a538102a 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fp.c
+++ b/drivers/scsi/megaraid/megaraid_sas_fp.c
@@ -358,7 +358,7 @@ u8 MR_ValidateMapInfo(struct megasas_instance *instance, u64 map_id)
 		ld = MR_TargetIdToLdGet(i, drv_map);
 
 		/* For non existing VDs, iterate to next VD*/
-		if (ld >= (MAX_LOGICAL_DRIVES_EXT - 1))
+		if (ld >= MEGASAS_MAX_SUPPORTED_LD_IDS)
 			continue;
 
 		raid = MR_LdRaidGet(ld, drv_map);
-- 
2.31.1


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[PATCH 2/3] megaraid_sas: Add crash dump mode capability bit in MFI capabilities

[Chandrakanth Patil]

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In kdump kernel mode, the driver works in reduced functionality mode with
some features disabled such as reduced MSIX count and RDPQ disabled etc.
However, the firmware is not aware of this mode, in some cases, which
results in undefined behavior.

To address this, the driver informs the firmware about the kdump mode
driver through MPI capabilities bit during driver initialization.
So firmware can adjust its behavior accordingly.

Signed-off-by: Chandrakanth Patil <chandrakanth.patil@broadcom.com>
Signed-off-by: Sumit Saxena <sumit.saxena@broadcom.com>
---
 drivers/scsi/megaraid/megaraid_sas.h        | 6 ++++--
 drivers/scsi/megaraid/megaraid_sas_fusion.c | 3 +++
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h
index 2ef9d41fc6f4..c2bace65105b 100644
--- a/drivers/scsi/megaraid/megaraid_sas.h
+++ b/drivers/scsi/megaraid/megaraid_sas.h
@@ -1760,7 +1760,8 @@ union megasas_sgl_frame {
 typedef union _MFI_CAPABILITIES {
 	struct {
 #if   defined(__BIG_ENDIAN_BITFIELD)
-	u32     reserved:16;
+	u32     reserved:15;
+	u32	support_memdump:1;
 	u32	support_fw_exposed_dev_list:1;
 	u32	support_nvme_passthru:1;
 	u32     support_64bit_mode:1;
@@ -1794,7 +1795,8 @@ typedef union _MFI_CAPABILITIES {
 	u32     support_64bit_mode:1;
 	u32	support_nvme_passthru:1;
 	u32	support_fw_exposed_dev_list:1;
-	u32     reserved:16;
+	u32	support_memdump:1;
+	u32     reserved:15;
 #endif
 	} mfi_capabilities;
 	__le32		reg;
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c
index fe70f8f11435..7ebfbe0c2ba7 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fusion.c
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c
@@ -1201,6 +1201,9 @@ megasas_ioc_init_fusion(struct megasas_instance *instance)
 	drv_ops->mfi_capabilities.support_nvme_passthru = 1;
 	drv_ops->mfi_capabilities.support_fw_exposed_dev_list = 1;
 
+	if (reset_devices)
+		drv_ops->mfi_capabilities.support_memdump = 1;
+
 	if (instance->consistent_mask_64bit)
 		drv_ops->mfi_capabilities.support_64bit_mode = 1;
 
-- 
2.31.1


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[PATCH 3/3] Driver version update to 07.725.01.00-rc1

[Chandrakanth Patil]

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Signed-off-by: Chandrakanth Patil <chandrakanth.patil@broadcom.com>
---
 drivers/scsi/megaraid/megaraid_sas.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h
index c2bace65105b..63bac3684c19 100644
--- a/drivers/scsi/megaraid/megaraid_sas.h
+++ b/drivers/scsi/megaraid/megaraid_sas.h
@@ -23,8 +23,8 @@
 /*
  * MegaRAID SAS Driver meta data
  */
-#define MEGASAS_VERSION				"07.719.03.00-rc1"
-#define MEGASAS_RELDATE				"Sep 29, 2021"
+#define MEGASAS_VERSION				"07.725.01.00-rc1"
+#define MEGASAS_RELDATE				"Mar 2, 2023"
 
 #define MEGASAS_MSIX_NAME_LEN			32
 
-- 
2.31.1


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Re: [PATCH 0/3] Driver version update to 07.725.01.00-rc1

[Martin K. Petersen]

On Thu, 02 Mar 2023 16:23:39 +0530, Chandrakanth Patil wrote:

> This patchset contains two critical fixes.
> 
> Chandrakanth Patil (3):
>   megaraid_sas: Update max supported LD IDs to 240
>   megaraid_sas: Add crash dump mode capability bit in MFI capabilities
>   Driver version update to 07.725.01.00-rc1
> 
> [...]

Applied to 6.3/scsi-fixes, thanks!

[1/3] megaraid_sas: Update max supported LD IDs to 240
      https://git.kernel.org/mkp/scsi/c/bfa659177dcb
[2/3] megaraid_sas: Add crash dump mode capability bit in MFI capabilities
      https://git.kernel.org/mkp/scsi/c/9bcb1d5a3d10
[3/3] Driver version update to 07.725.01.00-rc1
      https://git.kernel.org/mkp/scsi/c/a2033f9f9d78

-- 
Martin K. Petersen	Oracle Linux Engineering