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scsi: mpi3mr: Add support for PCIe Managed Switch SES device 

The SAS4 Controller firmware exposes the SES devices in Managed PCIe Switch
as a PCIe Device Type SCSI Device
(MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_SCSI_DEVICE).

Driver is enhanced to handle this device type by:

 - Exposing the device to the upper layers and

 - Not updating any hardware sectors & virtual boundary settings as these
   settings are needed only for NVMe devices.

Link: https://lore.kernel.org/r/20211220141159.16117-7-sreekanth.reddy@broadcom.com
Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Sreekanth Reddy 2021-12-20 19:41:40 +05:30 committed by Martin K. Petersen
parent ec5ebd2c14
commit 17d6b9cf89
2 changed files with 32 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/scsi/mpi3mr/mpi3mr.h
View File

@ -147,6 +147,7 @@ extern int prot_mask;
MPI3_SCSITASKMGMT_RSPCODE_IO_QUEUED_ON_IOC
#define MPI3MR_DEFAULT_MDTS (128 * 1024)
#define MPI3MR_DEFAULT_PGSZEXP (12)
/* Command retry count definitions */
#define MPI3MR_DEV_RMHS_RETRY_COUNT 3
@ -389,6 +390,7 @@ struct tgt_dev_sas_sata {
* @pgsz: Device page size
* @abort_to: Timeout for abort TM
* @reset_to: Timeout for Target/LUN reset TM
* @dev_info: Device information bits
*/
struct tgt_dev_pcie {
u32 mdts;
@ -396,6 +398,7 @@ struct tgt_dev_pcie {
u8 pgsz;
u8 abort_to;
u8 reset_to;
u16 dev_info;
};
/**

40
drivers/scsi/mpi3mr/mpi3mr_os.c
View File

@ -742,11 +742,18 @@ mpi3mr_update_sdev(struct scsi_device *sdev, void *data)
switch (tgtdev->dev_type) {
case MPI3_DEVICE_DEVFORM_PCIE:
/*The block layer hw sector size = 512*/
blk_queue_max_hw_sectors(sdev->request_queue,
tgtdev->dev_spec.pcie_inf.mdts / 512);
blk_queue_virt_boundary(sdev->request_queue,
((1 << tgtdev->dev_spec.pcie_inf.pgsz) - 1));
if ((tgtdev->dev_spec.pcie_inf.dev_info &
MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_MASK) ==
MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_NVME_DEVICE) {
blk_queue_max_hw_sectors(sdev->request_queue,
tgtdev->dev_spec.pcie_inf.mdts / 512);
if (tgtdev->dev_spec.pcie_inf.pgsz == 0)
blk_queue_virt_boundary(sdev->request_queue,
((1 << MPI3MR_DEFAULT_PGSZEXP) - 1));
else
blk_queue_virt_boundary(sdev->request_queue,
((1 << tgtdev->dev_spec.pcie_inf.pgsz) - 1));
}
break;
default:
break;
@ -848,6 +855,7 @@ static void mpi3mr_update_tgtdev(struct mpi3mr_ioc *mrioc,
&dev_pg0->device_specific.pcie_format;
u16 dev_info = le16_to_cpu(pcieinf->device_info);
tgtdev->dev_spec.pcie_inf.dev_info = dev_info;
tgtdev->dev_spec.pcie_inf.capb =
le32_to_cpu(pcieinf->capabilities);
tgtdev->dev_spec.pcie_inf.mdts = MPI3MR_DEFAULT_MDTS;
@ -864,8 +872,10 @@ static void mpi3mr_update_tgtdev(struct mpi3mr_ioc *mrioc,
}
if (tgtdev->dev_spec.pcie_inf.mdts > (1024 * 1024))
tgtdev->dev_spec.pcie_inf.mdts = (1024 * 1024);
if ((dev_info & MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_MASK) !=
MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_NVME_DEVICE)
if (((dev_info & MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_MASK) !=
MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_NVME_DEVICE) &&
((dev_info & MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_MASK) !=
MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_SCSI_DEVICE))
tgtdev->is_hidden = 1;
if (!mrioc->shost)
break;
@ -3190,10 +3200,18 @@ static int mpi3mr_slave_configure(struct scsi_device *sdev)
switch (tgt_dev->dev_type) {
case MPI3_DEVICE_DEVFORM_PCIE:
/*The block layer hw sector size = 512*/
blk_queue_max_hw_sectors(sdev->request_queue,
tgt_dev->dev_spec.pcie_inf.mdts / 512);
blk_queue_virt_boundary(sdev->request_queue,
((1 << tgt_dev->dev_spec.pcie_inf.pgsz) - 1));
if ((tgt_dev->dev_spec.pcie_inf.dev_info &
MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_MASK) ==
MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_NVME_DEVICE) {
blk_queue_max_hw_sectors(sdev->request_queue,
tgt_dev->dev_spec.pcie_inf.mdts / 512);
if (tgt_dev->dev_spec.pcie_inf.pgsz == 0)
blk_queue_virt_boundary(sdev->request_queue,
((1 << MPI3MR_DEFAULT_PGSZEXP) - 1));
else
blk_queue_virt_boundary(sdev->request_queue,
((1 << tgt_dev->dev_spec.pcie_inf.pgsz) - 1));
}
break;
default:
break;