Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 148124d9 authored by Sreekanth Reddy's avatar Sreekanth Reddy Committed by James Bottomley
Browse files

[SCSI] mpt2sas: Calulate the Reply post queue depth calculation as per the MPI spec 



[jejb: checkpatch fixes]
Signed-off-by: default avatarSreekanth Reddy <Sreekanth.Reddy@lsi.com>
Signed-off-by: default avatarJames Bottomley <JBottomley@Parallels.com>
parent 48ba2efc

drivers/scsi/mpt2sas/mpt2sas_base.c

+14 −12
Original line number Diff line number Diff line
@@ -2503,23 +2503,25 @@ _base_allocate_memory_pools(struct MPT2SAS_ADAPTER *ioc, int sleep_flag) 
	/* reply free queue sizing - taking into account for 64 FW events */

	ioc->reply_free_queue_depth = ioc->hba_queue_depth + 64;



	/* calculate reply descriptor post queue depth */

	ioc->reply_post_queue_depth = ioc->hba_queue_depth +

					ioc->reply_free_queue_depth +  1;

	/* align the reply post queue on the next 16 count boundary */

	if (!ioc->reply_free_queue_depth % 16)

		ioc->reply_post_queue_depth = ioc->reply_free_queue_depth + 16;

	else

		ioc->reply_post_queue_depth = ioc->reply_free_queue_depth +

				32 - (ioc->reply_free_queue_depth % 16);

	if (ioc->reply_post_queue_depth % 16)

		ioc->reply_post_queue_depth += 16 -

			(ioc->reply_post_queue_depth % 16);





	if (ioc->reply_post_queue_depth >

	    facts->MaxReplyDescriptorPostQueueDepth) {

		ioc->reply_post_queue_depth = min_t(u16,

		    (facts->MaxReplyDescriptorPostQueueDepth -

		    (facts->MaxReplyDescriptorPostQueueDepth % 16)),

		    (ioc->hba_queue_depth - (ioc->hba_queue_depth % 16)));

		ioc->reply_free_queue_depth = ioc->reply_post_queue_depth - 16;

		ioc->hba_queue_depth = ioc->reply_free_queue_depth - 64;

		ioc->reply_post_queue_depth =

			facts->MaxReplyDescriptorPostQueueDepth -

		    (facts->MaxReplyDescriptorPostQueueDepth % 16);

		ioc->hba_queue_depth =

			((ioc->reply_post_queue_depth - 64) / 2) - 1;

		ioc->reply_free_queue_depth = ioc->hba_queue_depth + 64;

	}





	dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "scatter gather: "

	    "sge_in_main_msg(%d), sge_per_chain(%d), sge_per_io(%d), "

	    "chains_per_io(%d)\n", ioc->name, ioc->max_sges_in_main_message,