Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753106AbbKKMC6 (ORCPT ); Wed, 11 Nov 2015 07:02:58 -0500 Received: from mail-pa0-f50.google.com ([209.85.220.50]:36557 "EHLO mail-pa0-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753045AbbKKMCx (ORCPT ); Wed, 11 Nov 2015 07:02:53 -0500 From: Sreekanth Reddy X-Google-Original-From: Sreekanth Reddy To: jejb@kernel.org Cc: martin.petersen@oracle.com, linux-scsi@vger.kernel.org, JBottomley@Parallels.com, Sathya.Prakash@avagotech.com, kashyap.desai@avagotech.com, linux-kernel@vger.kernel.org, hch@infradead.org, chaitra.basappa@avagotech.com, suganath-prabu.subramani@avagotech.com, Sreekanth Reddy Subject: [PATCH 20/25] mpt3sas: Moved Warpdriver specific functions to mpt3sas_warpdrive.c Date: Wed, 11 Nov 2015 17:30:36 +0530 Message-Id: <1447243241-10912-21-git-send-email-Sreekanth.Reddy@avagotech.com> X-Mailer: git-send-email 2.0.2 In-Reply-To: <1447243241-10912-1-git-send-email-Sreekanth.Reddy@avagotech.com> References: <1447243241-10912-1-git-send-email-Sreekanth.Reddy@avagotech.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 32768 Lines: 915 Change List: * Moved mpt2sas_warpdrive.c file from mpt2sas to mpt3sas folder and renamed it as mpt3sas_warpdrive.c. * Also renamed the functions in mpt3sas_warpdrive.c file to follow current driver function name convention. * Updated the Makefile to build mpt3sas_warpdrive.o file for these warpdrive specific functions. * Also in function mpt3sas_setup_direct_io(), used sector_div() API instead of division operator (which gives compilation errors on 32 bit machines) Signed-off-by: Sreekanth Reddy --- drivers/scsi/mpt2sas/mpt2sas_warpdrive.c | 338 ------------------------------ drivers/scsi/mpt3sas/Makefile | 3 +- drivers/scsi/mpt3sas/mpt3sas_base.h | 16 ++ drivers/scsi/mpt3sas/mpt3sas_scsih.c | 44 ++-- drivers/scsi/mpt3sas/mpt3sas_warpdrive.c | 344 +++++++++++++++++++++++++++++++ 5 files changed, 376 insertions(+), 369 deletions(-) delete mode 100644 drivers/scsi/mpt2sas/mpt2sas_warpdrive.c create mode 100644 drivers/scsi/mpt3sas/mpt3sas_warpdrive.c diff --git a/drivers/scsi/mpt2sas/mpt2sas_warpdrive.c b/drivers/scsi/mpt2sas/mpt2sas_warpdrive.c deleted file mode 100644 index c4fcbc2..0000000 --- a/drivers/scsi/mpt2sas/mpt2sas_warpdrive.c +++ /dev/null @@ -1,338 +0,0 @@ -/* - * Scsi Host Layer for MPT (Message Passing Technology) based controllers - * - * Copyright (C) 2012-2014 LSI Corporation - * Copyright (C) 2013-2015 Avago Technologies - * (mailto: MPT-FusionLinux.pdl@avagotech.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version 2 - * of the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * NO WARRANTY - * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR - * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT - * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is - * solely responsible for determining the appropriateness of using and - * distributing the Program and assumes all risks associated with its - * exercise of rights under this Agreement, including but not limited to - * the risks and costs of program errors, damage to or loss of data, - * programs or equipment, and unavailability or interruption of operations. - - * DISCLAIMER OF LIABILITY - * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY - * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND - * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR - * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE - * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED - * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES - - * You should have received a copy of the GNU General Public License - * along with this program. - */ - -/** - * _scsih_disable_ddio - Disable direct I/O for all the volumes - * @ioc: per adapter object - */ -static void -_scsih_disable_ddio(struct MPT3SAS_ADAPTER *ioc) -{ - Mpi2RaidVolPage1_t vol_pg1; - Mpi2ConfigReply_t mpi_reply; - struct _raid_device *raid_device; - u16 handle; - u16 ioc_status; - unsigned long flags; - - handle = 0xFFFF; - while (!(mpt3sas_config_get_raid_volume_pg1(ioc, &mpi_reply, - &vol_pg1, MPI2_RAID_VOLUME_PGAD_FORM_GET_NEXT_HANDLE, handle))) { - ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & - MPI2_IOCSTATUS_MASK; - if (ioc_status == MPI2_IOCSTATUS_CONFIG_INVALID_PAGE) - break; - handle = le16_to_cpu(vol_pg1.DevHandle); - spin_lock_irqsave(&ioc->raid_device_lock, flags); - raid_device = _scsih_raid_device_find_by_handle(ioc, handle); - if (raid_device) - raid_device->direct_io_enabled = 0; - spin_unlock_irqrestore(&ioc->raid_device_lock, flags); - } - return; -} - - -/** - * _scsih_get_num_volumes - Get number of volumes in the ioc - * @ioc: per adapter object - */ -static u8 -_scsih_get_num_volumes(struct MPT3SAS_ADAPTER *ioc) -{ - Mpi2RaidVolPage1_t vol_pg1; - Mpi2ConfigReply_t mpi_reply; - u16 handle; - u8 vol_cnt = 0; - u16 ioc_status; - - handle = 0xFFFF; - while (!(mpt3sas_config_get_raid_volume_pg1(ioc, &mpi_reply, - &vol_pg1, MPI2_RAID_VOLUME_PGAD_FORM_GET_NEXT_HANDLE, handle))) { - ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & - MPI2_IOCSTATUS_MASK; - if (ioc_status == MPI2_IOCSTATUS_CONFIG_INVALID_PAGE) - break; - vol_cnt++; - handle = le16_to_cpu(vol_pg1.DevHandle); - } - return vol_cnt; -} - - -/** - * _scsih_init_warpdrive_properties - Set properties for warpdrive direct I/O. - * @ioc: per adapter object - * @raid_device: the raid_device object - */ -static void -_scsih_init_warpdrive_properties(struct MPT3SAS_ADAPTER *ioc, - struct _raid_device *raid_device) -{ - Mpi2RaidVolPage0_t *vol_pg0; - Mpi2RaidPhysDiskPage0_t pd_pg0; - Mpi2ConfigReply_t mpi_reply; - u16 sz; - u8 num_pds, count; - unsigned long stripe_sz, block_sz; - u8 stripe_exp, block_exp; - u64 dev_max_lba; - - if (!ioc->is_warpdrive) - return; - - if (ioc->mfg_pg10_hide_flag == MFG_PAGE10_EXPOSE_ALL_DISKS) { - pr_info(MPT3SAS_FMT "WarpDrive : Direct IO is disabled " - "globally as drives are exposed\n", ioc->name); - return; - } - if (_scsih_get_num_volumes(ioc) > 1) { - _scsih_disable_ddio(ioc); - pr_info(MPT3SAS_FMT "WarpDrive : Direct IO is disabled " - "globally as number of drives > 1\n", ioc->name); - return; - } - if ((mpt3sas_config_get_number_pds(ioc, raid_device->handle, - &num_pds)) || !num_pds) { - pr_info(MPT3SAS_FMT "WarpDrive : Direct IO is disabled " - "Failure in computing number of drives\n", ioc->name); - return; - } - - sz = offsetof(Mpi2RaidVolPage0_t, PhysDisk) + (num_pds * - sizeof(Mpi2RaidVol0PhysDisk_t)); - vol_pg0 = kzalloc(sz, GFP_KERNEL); - if (!vol_pg0) { - pr_info(MPT3SAS_FMT "WarpDrive : Direct IO is disabled " - "Memory allocation failure for RVPG0\n", ioc->name); - return; - } - - if ((mpt3sas_config_get_raid_volume_pg0(ioc, &mpi_reply, vol_pg0, - MPI2_RAID_VOLUME_PGAD_FORM_HANDLE, raid_device->handle, sz))) { - pr_info(MPT3SAS_FMT "WarpDrive : Direct IO is disabled " - "Failure in retrieving RVPG0\n", ioc->name); - kfree(vol_pg0); - return; - } - - /* - * WARPDRIVE:If number of physical disks in a volume exceeds the max pds - * assumed for WARPDRIVE, disable direct I/O - */ - if (num_pds > MPT_MAX_WARPDRIVE_PDS) { - pr_warn(MPT3SAS_FMT "WarpDrive : Direct IO is disabled " - "for the drive with handle(0x%04x): num_mem=%d, " - "max_mem_allowed=%d\n", ioc->name, raid_device->handle, - num_pds, MPT_MAX_WARPDRIVE_PDS); - kfree(vol_pg0); - return; - } - for (count = 0; count < num_pds; count++) { - if (mpt3sas_config_get_phys_disk_pg0(ioc, &mpi_reply, - &pd_pg0, MPI2_PHYSDISK_PGAD_FORM_PHYSDISKNUM, - vol_pg0->PhysDisk[count].PhysDiskNum) || - pd_pg0.DevHandle == MPT3SAS_INVALID_DEVICE_HANDLE) { - pr_info(MPT3SAS_FMT "WarpDrive : Direct IO is " - "disabled for the drive with handle(0x%04x) member" - "handle retrieval failed for member number=%d\n", - ioc->name, raid_device->handle, - vol_pg0->PhysDisk[count].PhysDiskNum); - goto out_error; - } - /* Disable direct I/O if member drive lba exceeds 4 bytes */ - dev_max_lba = le64_to_cpu(pd_pg0.DeviceMaxLBA); - if (dev_max_lba >> 32) { - pr_info(MPT3SAS_FMT "WarpDrive : Direct IO is " - "disabled for the drive with handle(0x%04x) member" - " handle (0x%04x) unsupported max lba 0x%016llx\n", - ioc->name, raid_device->handle, - le16_to_cpu(pd_pg0.DevHandle), - (unsigned long long)dev_max_lba); - goto out_error; - } - - raid_device->pd_handle[count] = le16_to_cpu(pd_pg0.DevHandle); - } - - /* - * Assumption for WD: Direct I/O is not supported if the volume is - * not RAID0 - */ - if (raid_device->volume_type != MPI2_RAID_VOL_TYPE_RAID0) { - pr_info(MPT3SAS_FMT "WarpDrive : Direct IO is disabled " - "for the drive with handle(0x%04x): type=%d, " - "s_sz=%uK, blk_size=%u\n", ioc->name, - raid_device->handle, raid_device->volume_type, - (le32_to_cpu(vol_pg0->StripeSize) * - le16_to_cpu(vol_pg0->BlockSize)) / 1024, - le16_to_cpu(vol_pg0->BlockSize)); - goto out_error; - } - - stripe_sz = le32_to_cpu(vol_pg0->StripeSize); - stripe_exp = find_first_bit(&stripe_sz, 32); - if (stripe_exp == 32) { - pr_info(MPT3SAS_FMT "WarpDrive : Direct IO is disabled " - "for the drive with handle(0x%04x) invalid stripe sz %uK\n", - ioc->name, raid_device->handle, - (le32_to_cpu(vol_pg0->StripeSize) * - le16_to_cpu(vol_pg0->BlockSize)) / 1024); - goto out_error; - } - raid_device->stripe_exponent = stripe_exp; - block_sz = le16_to_cpu(vol_pg0->BlockSize); - block_exp = find_first_bit(&block_sz, 16); - if (block_exp == 16) { - pr_info(MPT3SAS_FMT "WarpDrive : Direct IO is disabled " - "for the drive with handle(0x%04x) invalid block sz %u\n", - ioc->name, raid_device->handle, - le16_to_cpu(vol_pg0->BlockSize)); - goto out_error; - } - raid_device->block_exponent = block_exp; - raid_device->direct_io_enabled = 1; - - pr_info(MPT3SAS_FMT "WarpDrive : Direct IO is Enabled for the drive" - " with handle(0x%04x)\n", ioc->name, raid_device->handle); - /* - * WARPDRIVE: Though the following fields are not used for direct IO, - * stored for future purpose: - */ - raid_device->max_lba = le64_to_cpu(vol_pg0->MaxLBA); - raid_device->stripe_sz = le32_to_cpu(vol_pg0->StripeSize); - raid_device->block_sz = le16_to_cpu(vol_pg0->BlockSize); - - - kfree(vol_pg0); - return; - -out_error: - raid_device->direct_io_enabled = 0; - for (count = 0; count < num_pds; count++) - raid_device->pd_handle[count] = 0; - kfree(vol_pg0); - return; -} - -/** - * _scsih_scsi_direct_io_get - returns direct io flag - * @ioc: per adapter object - * @smid: system request message index - * - * Returns the smid stored scmd pointer. - */ -static inline u8 -_scsih_scsi_direct_io_get(struct MPT3SAS_ADAPTER *ioc, u16 smid) -{ - return ioc->scsi_lookup[smid - 1].direct_io; -} - -/** - * _scsih_scsi_direct_io_set - sets direct io flag - * @ioc: per adapter object - * @smid: system request message index - * @direct_io: Zero or non-zero value to set in the direct_io flag - * - * Returns Nothing. - */ -static inline void -_scsih_scsi_direct_io_set(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 direct_io) -{ - ioc->scsi_lookup[smid - 1].direct_io = direct_io; -} - -/** - * _scsih_setup_direct_io - setup MPI request for WARPDRIVE Direct I/O - * @ioc: per adapter object - * @scmd: pointer to scsi command object - * @raid_device: pointer to raid device data structure - * @mpi_request: pointer to the SCSI_IO reqest message frame - * @smid: system request message index - * - * Returns nothing - */ -static void -_scsih_setup_direct_io(struct MPT3SAS_ADAPTER *ioc, struct scsi_cmnd *scmd, - struct _raid_device *raid_device, Mpi2SCSIIORequest_t *mpi_request, - u16 smid) -{ - sector_t v_lba, p_lba, stripe_off, stripe_unit, column, io_size; - u32 stripe_sz, stripe_exp; - u8 num_pds, cmd = scmd->cmnd[0]; - - if (cmd != READ_10 && cmd != WRITE_10 && - cmd != READ_16 && cmd != WRITE_16) - return; - - if (cmd == READ_10 || cmd == WRITE_10) - v_lba = get_unaligned_be32(&mpi_request->CDB.CDB32[2]); - else - v_lba = get_unaligned_be64(&mpi_request->CDB.CDB32[2]); - - io_size = scsi_bufflen(scmd) >> raid_device->block_exponent; - - if (v_lba + io_size - 1 > raid_device->max_lba) - return; - - stripe_sz = raid_device->stripe_sz; - stripe_exp = raid_device->stripe_exponent; - stripe_off = v_lba & (stripe_sz - 1); - - /* Return unless IO falls within a stripe */ - if (stripe_off + io_size > stripe_sz) - return; - - num_pds = raid_device->num_pds; - p_lba = v_lba >> stripe_exp; - stripe_unit = p_lba / num_pds; - column = p_lba % num_pds; - p_lba = (stripe_unit << stripe_exp) + stripe_off; - mpi_request->DevHandle = cpu_to_le16(raid_device->pd_handle[column]); - - if (cmd == READ_10 || cmd == WRITE_10) - put_unaligned_be32(lower_32_bits(p_lba), - &mpi_request->CDB.CDB32[2]); - else - put_unaligned_be64(p_lba, &mpi_request->CDB.CDB32[2]); - - _scsih_scsi_direct_io_set(ioc, smid, 1); -} diff --git a/drivers/scsi/mpt3sas/Makefile b/drivers/scsi/mpt3sas/Makefile index efb0c4c..b7643f5 100644 --- a/drivers/scsi/mpt3sas/Makefile +++ b/drivers/scsi/mpt3sas/Makefile @@ -5,4 +5,5 @@ mpt3sas-y += mpt3sas_base.o \ mpt3sas_scsih.o \ mpt3sas_transport.o \ mpt3sas_ctl.o \ - mpt3sas_trigger_diag.o + mpt3sas_trigger_diag.o \ + mpt3sas_warpdrive.o diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.h b/drivers/scsi/mpt3sas/mpt3sas_base.h index 08bedb6..087586e 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_base.h +++ b/drivers/scsi/mpt3sas/mpt3sas_base.h @@ -1270,6 +1270,8 @@ struct _sas_device *__mpt3sas_get_sdev_by_addr( struct MPT3SAS_ADAPTER *ioc, u64 sas_address); void mpt3sas_port_enable_complete(struct MPT3SAS_ADAPTER *ioc); +struct _raid_device * +mpt3sas_raid_device_find_by_handle(struct MPT3SAS_ADAPTER *ioc, u16 handle); /* config shared API */ u8 mpt3sas_config_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index, @@ -1403,4 +1405,18 @@ void mpt3sas_trigger_scsi(struct MPT3SAS_ADAPTER *ioc, u8 sense_key, u8 asc, u8 ascq); void mpt3sas_trigger_mpi(struct MPT3SAS_ADAPTER *ioc, u16 ioc_status, u32 loginfo); + +/* warpdrive APIs */ +u8 mpt3sas_get_num_volumes(struct MPT3SAS_ADAPTER *ioc); +void mpt3sas_init_warpdrive_properties(struct MPT3SAS_ADAPTER *ioc, + struct _raid_device *raid_device); +inline u8 +mpt3sas_scsi_direct_io_get(struct MPT3SAS_ADAPTER *ioc, u16 smid); +inline void +mpt3sas_scsi_direct_io_set(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 direct_io); +void +mpt3sas_setup_direct_io(struct MPT3SAS_ADAPTER *ioc, struct scsi_cmnd *scmd, + struct _raid_device *raid_device, Mpi2SCSIIORequest_t *mpi_request, + u16 smid); + #endif /* MPT3SAS_BASE_H_INCLUDED */ diff --git a/drivers/scsi/mpt3sas/mpt3sas_scsih.c b/drivers/scsi/mpt3sas/mpt3sas_scsih.c index efbce3f..04570a2 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c +++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c @@ -71,20 +71,6 @@ static int _scsih_add_device(struct MPT3SAS_ADAPTER *ioc, u16 handle, static u8 _scsih_check_for_pending_tm(struct MPT3SAS_ADAPTER *ioc, u16 smid); -static void _scsih_disable_ddio(struct MPT3SAS_ADAPTER *ioc); -static u8 _scsih_get_num_volumes(struct MPT3SAS_ADAPTER *ioc); -static void -_scsih_init_warpdrive_properties(struct MPT3SAS_ADAPTER *ioc, - struct _raid_device *raid_device); -static inline u8 -_scsih_scsi_direct_io_get(struct MPT3SAS_ADAPTER *ioc, u16 smid); -static inline void -_scsih_scsi_direct_io_set(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 direct_io); -static void -_scsih_setup_direct_io(struct MPT3SAS_ADAPTER *ioc, struct scsi_cmnd *scmd, - struct _raid_device *raid_device, Mpi2SCSIIORequest_t *mpi_request, - u16 smid); - /* global parameters */ LIST_HEAD(mpt3sas_ioc_list); /* global ioc lock for list operations */ @@ -884,7 +870,7 @@ _scsih_raid_device_find_by_id(struct MPT3SAS_ADAPTER *ioc, int id, int channel) } /** - * _scsih_raid_device_find_by_handle - raid device search + * mpt3sas_raid_device_find_by_handle - raid device search * @ioc: per adapter object * @handle: sas device handle (assigned by firmware) * Context: Calling function should acquire ioc->raid_device_lock @@ -892,8 +878,8 @@ _scsih_raid_device_find_by_id(struct MPT3SAS_ADAPTER *ioc, int id, int channel) * This searches for raid_device based on handle, then return raid_device * object. */ -static struct _raid_device * -_scsih_raid_device_find_by_handle(struct MPT3SAS_ADAPTER *ioc, u16 handle) +struct _raid_device * +mpt3sas_raid_device_find_by_handle(struct MPT3SAS_ADAPTER *ioc, u16 handle) { struct _raid_device *raid_device, *r; @@ -1829,7 +1815,7 @@ scsih_slave_configure(struct scsi_device *sdev) if (sas_target_priv_data->flags & MPT_TARGET_FLAGS_VOLUME) { spin_lock_irqsave(&ioc->raid_device_lock, flags); - raid_device = _scsih_raid_device_find_by_handle(ioc, handle); + raid_device = mpt3sas_raid_device_find_by_handle(ioc, handle); spin_unlock_irqrestore(&ioc->raid_device_lock, flags); if (!raid_device) { dfailprintk(ioc, pr_warn(MPT3SAS_FMT @@ -1848,7 +1834,7 @@ scsih_slave_configure(struct scsi_device *sdev) /* * WARPDRIVE: Initialize the required data for Direct IO */ - _scsih_init_warpdrive_properties(ioc, raid_device); + mpt3sas_init_warpdrive_properties(ioc, raid_device); /* RAID Queue Depth Support * IS volume = underlying qdepth of drive type, either @@ -3536,7 +3522,7 @@ _scsih_set_volume_delete_flag(struct MPT3SAS_ADAPTER *ioc, u16 handle) unsigned long flags; spin_lock_irqsave(&ioc->raid_device_lock, flags); - raid_device = _scsih_raid_device_find_by_handle(ioc, handle); + raid_device = mpt3sas_raid_device_find_by_handle(ioc, handle); if (raid_device && raid_device->starget && raid_device->starget->hostdata) { sas_target_priv_data = @@ -3960,7 +3946,7 @@ scsih_qcmd(struct Scsi_Host *shost, struct scsi_cmnd *scmd) raid_device = sas_target_priv_data->raid_device; if (raid_device && raid_device->direct_io_enabled) - _scsih_setup_direct_io(ioc, scmd, raid_device, mpi_request, + mpt3sas_setup_direct_io(ioc, scmd, raid_device, mpi_request, smid); if (likely(mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST)) { @@ -4455,13 +4441,13 @@ _scsih_io_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index, u32 reply) * WARPDRIVE: If direct_io is set then it is directIO, * the failed direct I/O should be redirected to volume */ - if (_scsih_scsi_direct_io_get(ioc, smid) && + if (mpt3sas_scsi_direct_io_get(ioc, smid) && ((ioc_status & MPI2_IOCSTATUS_MASK) != MPI2_IOCSTATUS_SCSI_TASK_TERMINATED)) { spin_lock_irqsave(&ioc->scsi_lookup_lock, flags); ioc->scsi_lookup[smid - 1].scmd = scmd; spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags); - _scsih_scsi_direct_io_set(ioc, smid, 0); + mpt3sas_scsi_direct_io_set(ioc, smid, 0); memcpy(mpi_request->CDB.CDB32, scmd->cmnd, scmd->cmd_len); mpi_request->DevHandle = cpu_to_le16(sas_device_priv_data->sas_target->handle); @@ -6204,7 +6190,7 @@ _scsih_sas_volume_delete(struct MPT3SAS_ADAPTER *ioc, u16 handle) struct scsi_target *starget = NULL; spin_lock_irqsave(&ioc->raid_device_lock, flags); - raid_device = _scsih_raid_device_find_by_handle(ioc, handle); + raid_device = mpt3sas_raid_device_find_by_handle(ioc, handle); if (raid_device) { if (raid_device->starget) { starget = raid_device->starget; @@ -6582,7 +6568,7 @@ _scsih_sas_ir_volume_event(struct MPT3SAS_ADAPTER *ioc, case MPI2_RAID_VOL_STATE_OPTIMAL: spin_lock_irqsave(&ioc->raid_device_lock, flags); - raid_device = _scsih_raid_device_find_by_handle(ioc, handle); + raid_device = mpt3sas_raid_device_find_by_handle(ioc, handle); spin_unlock_irqrestore(&ioc->raid_device_lock, flags); if (raid_device) @@ -6778,7 +6764,7 @@ _scsih_sas_ir_operation_status_event(struct MPT3SAS_ADAPTER *ioc, spin_lock_irqsave(&ioc->raid_device_lock, flags); handle = le16_to_cpu(event_data->VolDevHandle); - raid_device = _scsih_raid_device_find_by_handle(ioc, handle); + raid_device = mpt3sas_raid_device_find_by_handle(ioc, handle); if (raid_device) raid_device->percent_complete = event_data->PercentComplete; @@ -6965,7 +6951,7 @@ _scsih_mark_responding_raid_device(struct MPT3SAS_ADAPTER *ioc, u64 wwid, * across the host reset so re-initialize the * required data for Direct IO */ - _scsih_init_warpdrive_properties(ioc, raid_device); + mpt3sas_init_warpdrive_properties(ioc, raid_device); spin_lock_irqsave(&ioc->raid_device_lock, flags); if (raid_device->handle == handle) { spin_unlock_irqrestore(&ioc->raid_device_lock, @@ -8599,7 +8585,7 @@ _scsih_probe(struct pci_dev *pdev, const struct pci_device_id *id) else if (ioc->mfg_pg10_hide_flag == MFG_PAGE10_HIDE_ALL_DISKS) ioc->hide_drives = 1; else { - if (_scsih_get_num_volumes(ioc)) + if (mpt3sas_get_num_volumes(ioc)) ioc->hide_drives = 1; else ioc->hide_drives = 0; @@ -9031,5 +9017,3 @@ _mpt3sas_exit(void) module_init(_mpt3sas_init); module_exit(_mpt3sas_exit); - -#include "mpt2sas_warpdrive.c" diff --git a/drivers/scsi/mpt3sas/mpt3sas_warpdrive.c b/drivers/scsi/mpt3sas/mpt3sas_warpdrive.c new file mode 100644 index 0000000..540bd50 --- /dev/null +++ b/drivers/scsi/mpt3sas/mpt3sas_warpdrive.c @@ -0,0 +1,344 @@ +/* + * Scsi Host Layer for MPT (Message Passing Technology) based controllers + * + * Copyright (C) 2012-2014 LSI Corporation + * Copyright (C) 2013-2015 Avago Technologies + * (mailto: MPT-FusionLinux.pdl@avagotech.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * NO WARRANTY + * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR + * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT + * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is + * solely responsible for determining the appropriateness of using and + * distributing the Program and assumes all risks associated with its + * exercise of rights under this Agreement, including but not limited to + * the risks and costs of program errors, damage to or loss of data, + * programs or equipment, and unavailability or interruption of operations. + + * DISCLAIMER OF LIABILITY + * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR + * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE + * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED + * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES + + * You should have received a copy of the GNU General Public License + * along with this program. + */ +#include +#include +#include +#include +#include + +#include "mpt3sas_base.h" + +/** + * _warpdrive_disable_ddio - Disable direct I/O for all the volumes + * @ioc: per adapter object + */ +static void +_warpdrive_disable_ddio(struct MPT3SAS_ADAPTER *ioc) +{ + Mpi2RaidVolPage1_t vol_pg1; + Mpi2ConfigReply_t mpi_reply; + struct _raid_device *raid_device; + u16 handle; + u16 ioc_status; + unsigned long flags; + + handle = 0xFFFF; + while (!(mpt3sas_config_get_raid_volume_pg1(ioc, &mpi_reply, + &vol_pg1, MPI2_RAID_VOLUME_PGAD_FORM_GET_NEXT_HANDLE, handle))) { + ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & + MPI2_IOCSTATUS_MASK; + if (ioc_status == MPI2_IOCSTATUS_CONFIG_INVALID_PAGE) + break; + handle = le16_to_cpu(vol_pg1.DevHandle); + spin_lock_irqsave(&ioc->raid_device_lock, flags); + raid_device = mpt3sas_raid_device_find_by_handle(ioc, handle); + if (raid_device) + raid_device->direct_io_enabled = 0; + spin_unlock_irqrestore(&ioc->raid_device_lock, flags); + } + return; +} + + +/** + * mpt3sas_get_num_volumes - Get number of volumes in the ioc + * @ioc: per adapter object + */ +u8 +mpt3sas_get_num_volumes(struct MPT3SAS_ADAPTER *ioc) +{ + Mpi2RaidVolPage1_t vol_pg1; + Mpi2ConfigReply_t mpi_reply; + u16 handle; + u8 vol_cnt = 0; + u16 ioc_status; + + handle = 0xFFFF; + while (!(mpt3sas_config_get_raid_volume_pg1(ioc, &mpi_reply, + &vol_pg1, MPI2_RAID_VOLUME_PGAD_FORM_GET_NEXT_HANDLE, handle))) { + ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & + MPI2_IOCSTATUS_MASK; + if (ioc_status == MPI2_IOCSTATUS_CONFIG_INVALID_PAGE) + break; + vol_cnt++; + handle = le16_to_cpu(vol_pg1.DevHandle); + } + return vol_cnt; +} + + +/** + * mpt3sas_init_warpdrive_properties - Set properties for warpdrive direct I/O. + * @ioc: per adapter object + * @raid_device: the raid_device object + */ +void +mpt3sas_init_warpdrive_properties(struct MPT3SAS_ADAPTER *ioc, + struct _raid_device *raid_device) +{ + Mpi2RaidVolPage0_t *vol_pg0; + Mpi2RaidPhysDiskPage0_t pd_pg0; + Mpi2ConfigReply_t mpi_reply; + u16 sz; + u8 num_pds, count; + unsigned long stripe_sz, block_sz; + u8 stripe_exp, block_exp; + u64 dev_max_lba; + + if (!ioc->is_warpdrive) + return; + + if (ioc->mfg_pg10_hide_flag == MFG_PAGE10_EXPOSE_ALL_DISKS) { + pr_info(MPT3SAS_FMT "WarpDrive : Direct IO is disabled " + "globally as drives are exposed\n", ioc->name); + return; + } + if (mpt3sas_get_num_volumes(ioc) > 1) { + _warpdrive_disable_ddio(ioc); + pr_info(MPT3SAS_FMT "WarpDrive : Direct IO is disabled " + "globally as number of drives > 1\n", ioc->name); + return; + } + if ((mpt3sas_config_get_number_pds(ioc, raid_device->handle, + &num_pds)) || !num_pds) { + pr_info(MPT3SAS_FMT "WarpDrive : Direct IO is disabled " + "Failure in computing number of drives\n", ioc->name); + return; + } + + sz = offsetof(Mpi2RaidVolPage0_t, PhysDisk) + (num_pds * + sizeof(Mpi2RaidVol0PhysDisk_t)); + vol_pg0 = kzalloc(sz, GFP_KERNEL); + if (!vol_pg0) { + pr_info(MPT3SAS_FMT "WarpDrive : Direct IO is disabled " + "Memory allocation failure for RVPG0\n", ioc->name); + return; + } + + if ((mpt3sas_config_get_raid_volume_pg0(ioc, &mpi_reply, vol_pg0, + MPI2_RAID_VOLUME_PGAD_FORM_HANDLE, raid_device->handle, sz))) { + pr_info(MPT3SAS_FMT "WarpDrive : Direct IO is disabled " + "Failure in retrieving RVPG0\n", ioc->name); + kfree(vol_pg0); + return; + } + + /* + * WARPDRIVE:If number of physical disks in a volume exceeds the max pds + * assumed for WARPDRIVE, disable direct I/O + */ + if (num_pds > MPT_MAX_WARPDRIVE_PDS) { + pr_warn(MPT3SAS_FMT "WarpDrive : Direct IO is disabled " + "for the drive with handle(0x%04x): num_mem=%d, " + "max_mem_allowed=%d\n", ioc->name, raid_device->handle, + num_pds, MPT_MAX_WARPDRIVE_PDS); + kfree(vol_pg0); + return; + } + for (count = 0; count < num_pds; count++) { + if (mpt3sas_config_get_phys_disk_pg0(ioc, &mpi_reply, + &pd_pg0, MPI2_PHYSDISK_PGAD_FORM_PHYSDISKNUM, + vol_pg0->PhysDisk[count].PhysDiskNum) || + pd_pg0.DevHandle == MPT3SAS_INVALID_DEVICE_HANDLE) { + pr_info(MPT3SAS_FMT "WarpDrive : Direct IO is " + "disabled for the drive with handle(0x%04x) member" + "handle retrieval failed for member number=%d\n", + ioc->name, raid_device->handle, + vol_pg0->PhysDisk[count].PhysDiskNum); + goto out_error; + } + /* Disable direct I/O if member drive lba exceeds 4 bytes */ + dev_max_lba = le64_to_cpu(pd_pg0.DeviceMaxLBA); + if (dev_max_lba >> 32) { + pr_info(MPT3SAS_FMT "WarpDrive : Direct IO is " + "disabled for the drive with handle(0x%04x) member" + " handle (0x%04x) unsupported max lba 0x%016llx\n", + ioc->name, raid_device->handle, + le16_to_cpu(pd_pg0.DevHandle), + (unsigned long long)dev_max_lba); + goto out_error; + } + + raid_device->pd_handle[count] = le16_to_cpu(pd_pg0.DevHandle); + } + + /* + * Assumption for WD: Direct I/O is not supported if the volume is + * not RAID0 + */ + if (raid_device->volume_type != MPI2_RAID_VOL_TYPE_RAID0) { + pr_info(MPT3SAS_FMT "WarpDrive : Direct IO is disabled " + "for the drive with handle(0x%04x): type=%d, " + "s_sz=%uK, blk_size=%u\n", ioc->name, + raid_device->handle, raid_device->volume_type, + (le32_to_cpu(vol_pg0->StripeSize) * + le16_to_cpu(vol_pg0->BlockSize)) / 1024, + le16_to_cpu(vol_pg0->BlockSize)); + goto out_error; + } + + stripe_sz = le32_to_cpu(vol_pg0->StripeSize); + stripe_exp = find_first_bit(&stripe_sz, 32); + if (stripe_exp == 32) { + pr_info(MPT3SAS_FMT "WarpDrive : Direct IO is disabled " + "for the drive with handle(0x%04x) invalid stripe sz %uK\n", + ioc->name, raid_device->handle, + (le32_to_cpu(vol_pg0->StripeSize) * + le16_to_cpu(vol_pg0->BlockSize)) / 1024); + goto out_error; + } + raid_device->stripe_exponent = stripe_exp; + block_sz = le16_to_cpu(vol_pg0->BlockSize); + block_exp = find_first_bit(&block_sz, 16); + if (block_exp == 16) { + pr_info(MPT3SAS_FMT "WarpDrive : Direct IO is disabled " + "for the drive with handle(0x%04x) invalid block sz %u\n", + ioc->name, raid_device->handle, + le16_to_cpu(vol_pg0->BlockSize)); + goto out_error; + } + raid_device->block_exponent = block_exp; + raid_device->direct_io_enabled = 1; + + pr_info(MPT3SAS_FMT "WarpDrive : Direct IO is Enabled for the drive" + " with handle(0x%04x)\n", ioc->name, raid_device->handle); + /* + * WARPDRIVE: Though the following fields are not used for direct IO, + * stored for future purpose: + */ + raid_device->max_lba = le64_to_cpu(vol_pg0->MaxLBA); + raid_device->stripe_sz = le32_to_cpu(vol_pg0->StripeSize); + raid_device->block_sz = le16_to_cpu(vol_pg0->BlockSize); + + + kfree(vol_pg0); + return; + +out_error: + raid_device->direct_io_enabled = 0; + for (count = 0; count < num_pds; count++) + raid_device->pd_handle[count] = 0; + kfree(vol_pg0); + return; +} + +/** + * mpt3sas_scsi_direct_io_get - returns direct io flag + * @ioc: per adapter object + * @smid: system request message index + * + * Returns the smid stored scmd pointer. + */ +inline u8 +mpt3sas_scsi_direct_io_get(struct MPT3SAS_ADAPTER *ioc, u16 smid) +{ + return ioc->scsi_lookup[smid - 1].direct_io; +} + +/** + * mpt3sas_scsi_direct_io_set - sets direct io flag + * @ioc: per adapter object + * @smid: system request message index + * @direct_io: Zero or non-zero value to set in the direct_io flag + * + * Returns Nothing. + */ +inline void +mpt3sas_scsi_direct_io_set(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 direct_io) +{ + ioc->scsi_lookup[smid - 1].direct_io = direct_io; +} + +/** + * mpt3sas_setup_direct_io - setup MPI request for WARPDRIVE Direct I/O + * @ioc: per adapter object + * @scmd: pointer to scsi command object + * @raid_device: pointer to raid device data structure + * @mpi_request: pointer to the SCSI_IO reqest message frame + * @smid: system request message index + * + * Returns nothing + */ +void +mpt3sas_setup_direct_io(struct MPT3SAS_ADAPTER *ioc, struct scsi_cmnd *scmd, + struct _raid_device *raid_device, Mpi2SCSIIORequest_t *mpi_request, + u16 smid) +{ + sector_t v_lba, p_lba, stripe_off, column, io_size; + u32 stripe_sz, stripe_exp; + u8 num_pds, cmd = scmd->cmnd[0]; + + if (cmd != READ_10 && cmd != WRITE_10 && + cmd != READ_16 && cmd != WRITE_16) + return; + + if (cmd == READ_10 || cmd == WRITE_10) + v_lba = get_unaligned_be32(&mpi_request->CDB.CDB32[2]); + else + v_lba = get_unaligned_be64(&mpi_request->CDB.CDB32[2]); + + io_size = scsi_bufflen(scmd) >> raid_device->block_exponent; + + if (v_lba + io_size - 1 > raid_device->max_lba) + return; + + stripe_sz = raid_device->stripe_sz; + stripe_exp = raid_device->stripe_exponent; + stripe_off = v_lba & (stripe_sz - 1); + + /* Return unless IO falls within a stripe */ + if (stripe_off + io_size > stripe_sz) + return; + + num_pds = raid_device->num_pds; + p_lba = v_lba >> stripe_exp; + column = sector_div(p_lba, num_pds); + p_lba = (p_lba << stripe_exp) + stripe_off; + mpi_request->DevHandle = cpu_to_le16(raid_device->pd_handle[column]); + + if (cmd == READ_10 || cmd == WRITE_10) + put_unaligned_be32(lower_32_bits(p_lba), + &mpi_request->CDB.CDB32[2]); + else + put_unaligned_be64(p_lba, &mpi_request->CDB.CDB32[2]); + + mpt3sas_scsi_direct_io_set(ioc, smid, 1); +} -- 2.0.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/