4  * Copyright (C) 2012-2014  LSI Corporation
5  * Copyright (C) 2013-2015 Avago Technologies
6  *  (mailto: MPT-FusionLinux.pdl@avagotech.com)
21  * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
50  * _warpdrive_disable_ddio - Disable direct I/O for all the volumes
71 		spin_lock_irqsave(&ioc->raid_device_lock, flags);  in _warpdrive_disable_ddio()
74 			raid_device->direct_io_enabled = 0;  in _warpdrive_disable_ddio()
75 		spin_unlock_irqrestore(&ioc->raid_device_lock, flags);  in _warpdrive_disable_ddio()
82  * mpt3sas_get_num_volumes - Get number of volumes in the ioc
109  * mpt3sas_init_warpdrive_properties - Set properties for warpdrive direct I/O.
126 	if (!ioc->is_warpdrive)  in mpt3sas_init_warpdrive_properties()
129 	if (ioc->mfg_pg10_hide_flag ==  MFG_PAGE10_EXPOSE_ALL_DISKS) {  in mpt3sas_init_warpdrive_properties()
138 	if ((mpt3sas_config_get_number_pds(ioc, raid_device->handle,  in mpt3sas_init_warpdrive_properties()
152 	     MPI2_RAID_VOLUME_PGAD_FORM_HANDLE, raid_device->handle, sz))) {  in mpt3sas_init_warpdrive_properties()
160 	 * assumed for WARPDRIVE, disable direct I/O  in mpt3sas_init_warpdrive_properties()
163 …ioc_warn(ioc, "WarpDrive : Direct IO is disabled for the drive with handle(0x%04x): num_mem=%d, ma…  in mpt3sas_init_warpdrive_properties()
164 			 raid_device->handle, num_pds, MPT_MAX_WARPDRIVE_PDS);  in mpt3sas_init_warpdrive_properties()
171 		    vol_pg0->PhysDisk[count].PhysDiskNum) ||  in mpt3sas_init_warpdrive_properties()
174 …ioc_info(ioc, "WarpDrive : Direct IO is disabled for the drive with handle(0x%04x) member handle r…  in mpt3sas_init_warpdrive_properties()
175 				 raid_device->handle,  in mpt3sas_init_warpdrive_properties()
176 				 vol_pg0->PhysDisk[count].PhysDiskNum);  in mpt3sas_init_warpdrive_properties()
179 		/* Disable direct I/O if member drive lba exceeds 4 bytes */  in mpt3sas_init_warpdrive_properties()
182 …ioc_info(ioc, "WarpDrive : Direct IO is disabled for the drive with handle(0x%04x) member handle (…  in mpt3sas_init_warpdrive_properties()
183 				 raid_device->handle,  in mpt3sas_init_warpdrive_properties()
189 		raid_device->pd_handle[count] = le16_to_cpu(pd_pg0.DevHandle);  in mpt3sas_init_warpdrive_properties()
193 	 * Assumption for WD: Direct I/O is not supported if the volume is  in mpt3sas_init_warpdrive_properties()
196 	if (raid_device->volume_type != MPI2_RAID_VOL_TYPE_RAID0) {  in mpt3sas_init_warpdrive_properties()
197 …ioc_info(ioc, "WarpDrive : Direct IO is disabled for the drive with handle(0x%04x): type=%d, s_sz=…  in mpt3sas_init_warpdrive_properties()
198 			 raid_device->handle, raid_device->volume_type,  in mpt3sas_init_warpdrive_properties()
199 			 (le32_to_cpu(vol_pg0->StripeSize) *  in mpt3sas_init_warpdrive_properties()
200 			  le16_to_cpu(vol_pg0->BlockSize)) / 1024,  in mpt3sas_init_warpdrive_properties()
201 			 le16_to_cpu(vol_pg0->BlockSize));  in mpt3sas_init_warpdrive_properties()
205 	stripe_sz = le32_to_cpu(vol_pg0->StripeSize);  in mpt3sas_init_warpdrive_properties()
208 …ioc_info(ioc, "WarpDrive : Direct IO is disabled for the drive with handle(0x%04x) invalid stripe …  in mpt3sas_init_warpdrive_properties()
209 			 raid_device->handle,  in mpt3sas_init_warpdrive_properties()
210 			 (le32_to_cpu(vol_pg0->StripeSize) *  in mpt3sas_init_warpdrive_properties()
211 			  le16_to_cpu(vol_pg0->BlockSize)) / 1024);  in mpt3sas_init_warpdrive_properties()
214 	raid_device->stripe_exponent = stripe_exp;  in mpt3sas_init_warpdrive_properties()
215 	block_sz = le16_to_cpu(vol_pg0->BlockSize);  in mpt3sas_init_warpdrive_properties()
218 …ioc_info(ioc, "WarpDrive : Direct IO is disabled for the drive with handle(0x%04x) invalid block s…  in mpt3sas_init_warpdrive_properties()
219 			 raid_device->handle, le16_to_cpu(vol_pg0->BlockSize));  in mpt3sas_init_warpdrive_properties()
222 	raid_device->block_exponent = block_exp;  in mpt3sas_init_warpdrive_properties()
223 	raid_device->direct_io_enabled = 1;  in mpt3sas_init_warpdrive_properties()
225 	ioc_info(ioc, "WarpDrive : Direct IO is Enabled for the drive with handle(0x%04x)\n",  in mpt3sas_init_warpdrive_properties()
226 		 raid_device->handle);  in mpt3sas_init_warpdrive_properties()
231 	raid_device->max_lba = le64_to_cpu(vol_pg0->MaxLBA);  in mpt3sas_init_warpdrive_properties()
232 	raid_device->stripe_sz = le32_to_cpu(vol_pg0->StripeSize);  in mpt3sas_init_warpdrive_properties()
233 	raid_device->block_sz = le16_to_cpu(vol_pg0->BlockSize);  in mpt3sas_init_warpdrive_properties()
240 	raid_device->direct_io_enabled = 0;  in mpt3sas_init_warpdrive_properties()
242 		raid_device->pd_handle[count] = 0;  in mpt3sas_init_warpdrive_properties()
248  * mpt3sas_setup_direct_io - setup MPI request for WARPDRIVE Direct I/O
260 	u8 num_pds, cmd = scmd->cmnd[0];  in mpt3sas_setup_direct_io()
268 		v_lba = get_unaligned_be32(&mpi_request->CDB.CDB32[2]);  in mpt3sas_setup_direct_io()
270 		v_lba = get_unaligned_be64(&mpi_request->CDB.CDB32[2]);  in mpt3sas_setup_direct_io()
272 	io_size = scsi_bufflen(scmd) >> raid_device->block_exponent;  in mpt3sas_setup_direct_io()
274 	if (v_lba + io_size - 1 > raid_device->max_lba)  in mpt3sas_setup_direct_io()
277 	stripe_sz = raid_device->stripe_sz;  in mpt3sas_setup_direct_io()
278 	stripe_exp = raid_device->stripe_exponent;  in mpt3sas_setup_direct_io()
279 	stripe_off = v_lba & (stripe_sz - 1);  in mpt3sas_setup_direct_io()
285 	num_pds = raid_device->num_pds;  in mpt3sas_setup_direct_io()
289 	mpi_request->DevHandle = cpu_to_le16(raid_device->pd_handle[column]);  in mpt3sas_setup_direct_io()
293 				   &mpi_request->CDB.CDB32[2]);  in mpt3sas_setup_direct_io()
295 		put_unaligned_be64(p_lba, &mpi_request->CDB.CDB32[2]);  in mpt3sas_setup_direct_io()
297 	st->direct_io = 1;  in mpt3sas_setup_direct_io()