From 5bb309dbbbf2157786004201eb70dafd283b54b5 Mon Sep 17 00:00:00 2001 From: Suganath Prabu Date: Sat, 3 Aug 2019 09:59:50 -0400 Subject: [PATCH] scsi: mpt3sas: Enumerate SES of a managed PCIe switch SES device of managed PCIe switch will be enumerated same as NVMe drives. The device info type for this SES device is MPI26_PCIE_DEVINFO_SCSI (0x4), whereas the device info type for NVMe drives is MPI26_PCIE_DEVINFO_NVME (0x3). Based on this device info type driver determines whether the device is NVMe drive or a SES device of a managed PCIe switch. This SES device doesn't have the PCIe device page 2 information like NVMe drives, so driver won't read PCIe device page 2 information for SES device. This SES device uses only IEEE SGL's, So driver build's IEEE SGL's whenever it receives any SCSI commands for this SES device. Signed-off-by: Suganath Prabu Signed-off-by: Martin K. Petersen --- drivers/scsi/mpt3sas/mpt3sas_base.c | 5 ++ drivers/scsi/mpt3sas/mpt3sas_base.h | 16 +++++ drivers/scsi/mpt3sas/mpt3sas_ctl.c | 7 ++- drivers/scsi/mpt3sas/mpt3sas_scsih.c | 92 ++++++++++++++++++---------- 4 files changed, 83 insertions(+), 37 deletions(-) diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c index f72933cc6622..44d19cb6b069 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_base.c +++ b/drivers/scsi/mpt3sas/mpt3sas_base.c @@ -2260,6 +2260,11 @@ base_is_prp_possible(struct MPT3SAS_ADAPTER *ioc, bool build_prp = true; data_length = scsi_bufflen(scmd); + if (pcie_device && + (mpt3sas_scsih_is_pcie_scsi_device(pcie_device->device_info))) { + build_prp = false; + return build_prp; + } /* If Datalenth is <= 16K and number of SGE’s entries are <= 2 * we built IEEE SGL diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.h b/drivers/scsi/mpt3sas/mpt3sas_base.h index 5cd6148ad9bd..f6a1ae1cf4c0 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_base.h +++ b/drivers/scsi/mpt3sas/mpt3sas_base.h @@ -1735,4 +1735,20 @@ mpt3sas_setup_direct_io(struct MPT3SAS_ADAPTER *ioc, struct scsi_cmnd *scmd, /* NCQ Prio Handling Check */ bool scsih_ncq_prio_supp(struct scsi_device *sdev); +/** + * _scsih_is_pcie_scsi_device - determines if device is an pcie scsi device + * @device_info: bitfield providing information about the device. + * Context: none + * + * Returns 1 if scsi device. + */ +static inline int +mpt3sas_scsih_is_pcie_scsi_device(u32 device_info) +{ + if ((device_info & + MPI26_PCIE_DEVINFO_MASK_DEVICE_TYPE) == MPI26_PCIE_DEVINFO_SCSI) + return 1; + else + return 0; +} #endif /* MPT3SAS_BASE_H_INCLUDED */ diff --git a/drivers/scsi/mpt3sas/mpt3sas_ctl.c b/drivers/scsi/mpt3sas/mpt3sas_ctl.c index ab78bcf9fbc6..5592919a952d 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_ctl.c +++ b/drivers/scsi/mpt3sas/mpt3sas_ctl.c @@ -662,7 +662,6 @@ _ctl_do_mpt_command(struct MPT3SAS_ADAPTER *ioc, struct mpt3_ioctl_command karg, size_t data_in_sz = 0; long ret; u16 device_handle = MPT3SAS_INVALID_DEVICE_HANDLE; - u8 tr_method = MPI26_SCSITASKMGMT_MSGFLAGS_PROTOCOL_LVL_RST_PCIE; issue_reset = 0; @@ -1057,12 +1056,14 @@ _ctl_do_mpt_command(struct MPT3SAS_ADAPTER *ioc, struct mpt3_ioctl_command karg, mpt3sas_halt_firmware(ioc); pcie_device = mpt3sas_get_pdev_by_handle(ioc, le16_to_cpu(mpi_request->FunctionDependent1)); - if (pcie_device && (!ioc->tm_custom_handling)) + if (pcie_device && (!ioc->tm_custom_handling) && + (!(mpt3sas_scsih_is_pcie_scsi_device( + pcie_device->device_info)))) mpt3sas_scsih_issue_locked_tm(ioc, le16_to_cpu(mpi_request->FunctionDependent1), 0, MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 0, 0, pcie_device->reset_timeout, - tr_method); + MPI26_SCSITASKMGMT_MSGFLAGS_PROTOCOL_LVL_RST_PCIE); else mpt3sas_scsih_issue_locked_tm(ioc, le16_to_cpu(mpi_request->FunctionDependent1), diff --git a/drivers/scsi/mpt3sas/mpt3sas_scsih.c b/drivers/scsi/mpt3sas/mpt3sas_scsih.c index 717ba0845a2a..c8b83894833f 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c +++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c @@ -1433,17 +1433,20 @@ _scsih_is_end_device(u32 device_info) } /** - * _scsih_is_nvme_device - determines if device is an nvme device + * _scsih_is_nvme_pciescsi_device - determines if + * device is an pcie nvme/scsi device * @device_info: bitfield providing information about the device. * Context: none * - * Return: 1 if nvme device. + * Returns 1 if device is pcie device type nvme/scsi. */ static int -_scsih_is_nvme_device(u32 device_info) +_scsih_is_nvme_pciescsi_device(u32 device_info) { - if ((device_info & MPI26_PCIE_DEVINFO_MASK_DEVICE_TYPE) - == MPI26_PCIE_DEVINFO_NVME) + if (((device_info & MPI26_PCIE_DEVINFO_MASK_DEVICE_TYPE) + == MPI26_PCIE_DEVINFO_NVME) || + ((device_info & MPI26_PCIE_DEVINFO_MASK_DEVICE_TYPE) + == MPI26_PCIE_DEVINFO_SCSI)) return 1; else return 0; @@ -2872,7 +2875,8 @@ scsih_abort(struct scsi_cmnd *scmd) handle = sas_device_priv_data->sas_target->handle; pcie_device = mpt3sas_get_pdev_by_handle(ioc, handle); - if (pcie_device && (!ioc->tm_custom_handling)) + if (pcie_device && (!ioc->tm_custom_handling) && + (!(mpt3sas_scsih_is_pcie_scsi_device(pcie_device->device_info)))) timeout = ioc->nvme_abort_timeout; r = mpt3sas_scsih_issue_locked_tm(ioc, handle, scmd->device->lun, MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK, @@ -2943,11 +2947,13 @@ scsih_dev_reset(struct scsi_cmnd *scmd) pcie_device = mpt3sas_get_pdev_by_handle(ioc, handle); - if (pcie_device && (!ioc->tm_custom_handling)) { + if (pcie_device && (!ioc->tm_custom_handling) && + (!(mpt3sas_scsih_is_pcie_scsi_device(pcie_device->device_info)))) { tr_timeout = pcie_device->reset_timeout; tr_method = MPI26_SCSITASKMGMT_MSGFLAGS_PROTOCOL_LVL_RST_PCIE; } else tr_method = MPI2_SCSITASKMGMT_MSGFLAGS_LINK_RESET; + r = mpt3sas_scsih_issue_locked_tm(ioc, handle, scmd->device->lun, MPI2_SCSITASKMGMT_TASKTYPE_LOGICAL_UNIT_RESET, 0, 0, tr_timeout, tr_method); @@ -3020,7 +3026,8 @@ scsih_target_reset(struct scsi_cmnd *scmd) pcie_device = mpt3sas_get_pdev_by_handle(ioc, handle); - if (pcie_device && (!ioc->tm_custom_handling)) { + if (pcie_device && (!ioc->tm_custom_handling) && + (!(mpt3sas_scsih_is_pcie_scsi_device(pcie_device->device_info)))) { tr_timeout = pcie_device->reset_timeout; tr_method = MPI26_SCSITASKMGMT_MSGFLAGS_PROTOCOL_LVL_RST_PCIE; } else @@ -3598,7 +3605,9 @@ _scsih_tm_tr_send(struct MPT3SAS_ADAPTER *ioc, u16 handle) sas_address = pcie_device->wwid; } spin_unlock_irqrestore(&ioc->pcie_device_lock, flags); - if (pcie_device && (!ioc->tm_custom_handling)) + if (pcie_device && (!ioc->tm_custom_handling) && + (!(mpt3sas_scsih_is_pcie_scsi_device( + pcie_device->device_info)))) tr_method = MPI26_SCSITASKMGMT_MSGFLAGS_PROTOCOL_LVL_RST_PCIE; else @@ -6694,7 +6703,7 @@ _scsih_pcie_check_device(struct MPT3SAS_ADAPTER *ioc, u16 handle) /* check if this is end device */ device_info = le32_to_cpu(pcie_device_pg0.DeviceInfo); - if (!(_scsih_is_nvme_device(device_info))) + if (!(_scsih_is_nvme_pciescsi_device(device_info))) return; wwid = le64_to_cpu(pcie_device_pg0.WWID); @@ -6803,7 +6812,8 @@ _scsih_pcie_add_device(struct MPT3SAS_ADAPTER *ioc, u16 handle) pcie_device_pg0.AccessStatus)) return 0; - if (!(_scsih_is_nvme_device(le32_to_cpu(pcie_device_pg0.DeviceInfo)))) + if (!(_scsih_is_nvme_pciescsi_device(le32_to_cpu + (pcie_device_pg0.DeviceInfo)))) return 0; pcie_device = mpt3sas_get_pdev_by_wwid(ioc, wwid); @@ -6813,6 +6823,31 @@ _scsih_pcie_add_device(struct MPT3SAS_ADAPTER *ioc, u16 handle) return 0; } + /* PCIe Device Page 2 contains read-only information about a + * specific NVMe device; therefore, this page is only + * valid for NVMe devices and skip for pcie devices of type scsi. + */ + if (!(mpt3sas_scsih_is_pcie_scsi_device( + le32_to_cpu(pcie_device_pg0.DeviceInfo)))) { + if (mpt3sas_config_get_pcie_device_pg2(ioc, &mpi_reply, + &pcie_device_pg2, MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, + handle)) { + ioc_err(ioc, + "failure at %s:%d/%s()!\n", __FILE__, + __LINE__, __func__); + return 0; + } + + ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & + MPI2_IOCSTATUS_MASK; + if (ioc_status != MPI2_IOCSTATUS_SUCCESS) { + ioc_err(ioc, + "failure at %s:%d/%s()!\n", __FILE__, + __LINE__, __func__); + return 0; + } + } + pcie_device = kzalloc(sizeof(struct _pcie_device), GFP_KERNEL); if (!pcie_device) { ioc_err(ioc, "failure at %s:%d/%s()!\n", @@ -6855,27 +6890,16 @@ _scsih_pcie_add_device(struct MPT3SAS_ADAPTER *ioc, u16 handle) le64_to_cpu(enclosure_dev->pg0.EnclosureLogicalID); } /* TODO -- Add device name once FW supports it */ - if (mpt3sas_config_get_pcie_device_pg2(ioc, &mpi_reply, - &pcie_device_pg2, MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle)) { - ioc_err(ioc, "failure at %s:%d/%s()!\n", - __FILE__, __LINE__, __func__); - kfree(pcie_device); - return 0; - } - - ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK; - if (ioc_status != MPI2_IOCSTATUS_SUCCESS) { - ioc_err(ioc, "failure at %s:%d/%s()!\n", - __FILE__, __LINE__, __func__); - kfree(pcie_device); - return 0; - } - pcie_device->nvme_mdts = - le32_to_cpu(pcie_device_pg2.MaximumDataTransferSize); - if (pcie_device_pg2.ControllerResetTO) - pcie_device->reset_timeout = - pcie_device_pg2.ControllerResetTO; - else + if (!(mpt3sas_scsih_is_pcie_scsi_device( + le32_to_cpu(pcie_device_pg0.DeviceInfo)))) { + pcie_device->nvme_mdts = + le32_to_cpu(pcie_device_pg2.MaximumDataTransferSize); + if (pcie_device_pg2.ControllerResetTO) + pcie_device->reset_timeout = + pcie_device_pg2.ControllerResetTO; + else + pcie_device->reset_timeout = 30; + } else pcie_device->reset_timeout = 30; if (ioc->wait_for_discovery_to_complete) @@ -8594,7 +8618,7 @@ _scsih_search_responding_pcie_devices(struct MPT3SAS_ADAPTER *ioc) } handle = le16_to_cpu(pcie_device_pg0.DevHandle); device_info = le32_to_cpu(pcie_device_pg0.DeviceInfo); - if (!(_scsih_is_nvme_device(device_info))) + if (!(_scsih_is_nvme_pciescsi_device(device_info))) continue; _scsih_mark_responding_pcie_device(ioc, &pcie_device_pg0); } @@ -9175,7 +9199,7 @@ _scsih_scan_for_devices_after_reset(struct MPT3SAS_ADAPTER *ioc) break; } handle = le16_to_cpu(pcie_device_pg0.DevHandle); - if (!(_scsih_is_nvme_device( + if (!(_scsih_is_nvme_pciescsi_device( le32_to_cpu(pcie_device_pg0.DeviceInfo)))) continue; pcie_device = mpt3sas_get_pdev_by_wwid(ioc, -- 2.45.2