From 595bb0bd62edb28a965993d90e0fa1285560ce53 Mon Sep 17 00:00:00 2001 From: "Kashyap, Desai" Date: Mon, 14 Sep 2009 11:02:48 +0530 Subject: [SCSI] mpt2sas: Added SCSIIO, Internal and high priority memory pools to support multiple TM 1) create a pool of high priority message frames in the region of memory between message frames and chains. The modifications are in _base_allocate_memory_pools. Also create a seperate pool of memory for internal commands located near the same region of memory. The pool of high priority message frames is restriced by the facts->HighPriorityCredit. 2) Create additional API for accessing request message frames. New function mpt2sas_base_get_smid_hpr is for highpriority request. New function mpt2sas_base_get_smid_scsiio for SCSI_IO, passing in the scsi command pointer. The mpt2sas_base_get_smid function is for requesting internal commands. 3) Added new function _base_get_cb_idx to obtain the callback index from one of the three pools of request message frames. 4) Removed wrapper functions _scsih_scsi_lookup_set and _scsih_scsi_lookup_getclear. These were removed because this handling was moved into mpt2sas_base_get_smid_scsiio and mpt2sas_base_free_smid. 5) The function mpt2sas_base_free_smid is modified so the request message frames are put back on one of the three pools of request message frames. Signed-off-by: Kashyap Desai Signed-off-by: James Bottomley --- drivers/scsi/mpt2sas/mpt2sas_ctl.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/scsi/mpt2sas/mpt2sas_ctl.c') diff --git a/drivers/scsi/mpt2sas/mpt2sas_ctl.c b/drivers/scsi/mpt2sas/mpt2sas_ctl.c index 37961504aaae..466e2f42367f 100644 --- a/drivers/scsi/mpt2sas/mpt2sas_ctl.c +++ b/drivers/scsi/mpt2sas/mpt2sas_ctl.c @@ -509,7 +509,7 @@ _ctl_set_task_mid(struct MPT2SAS_ADAPTER *ioc, struct mpt2_ioctl_command *karg, handle = le16_to_cpu(tm_request->DevHandle); spin_lock_irqsave(&ioc->scsi_lookup_lock, flags); - for (i = ioc->request_depth; i && !found; i--) { + for (i = ioc->scsiio_depth; i && !found; i--) { scmd = ioc->scsi_lookup[i - 1].scmd; if (scmd == NULL || scmd->device == NULL || scmd->device->hostdata == NULL) @@ -616,7 +616,7 @@ _ctl_do_mpt_command(struct MPT2SAS_ADAPTER *ioc, printk(MPT2SAS_INFO_FMT "%s: ioc is operational\n", ioc->name, __func__); - smid = mpt2sas_base_get_smid(ioc, ioc->ctl_cb_idx); + smid = mpt2sas_base_get_smid_scsiio(ioc, ioc->ctl_cb_idx, NULL); if (!smid) { printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n", ioc->name, __func__); -- cgit v1.2.2