From patchwork Wed Jul 22 16:49:11 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: rajinikanth.pandurangan@pmcs.com X-Patchwork-Id: 6845311 Return-Path: X-Original-To: patchwork-linux-scsi@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 9494AC05AC for ; Wed, 22 Jul 2015 16:50:07 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 5924220698 for ; Wed, 22 Jul 2015 16:50:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 052A020692 for ; Wed, 22 Jul 2015 16:50:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965567AbbGVQt4 (ORCPT ); Wed, 22 Jul 2015 12:49:56 -0400 Received: from bby1mta03.pmc-sierra.com ([216.241.235.118]:56954 "EHLO bby1mta03.pmc-sierra.bc.ca" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965457AbbGVQtx (ORCPT ); Wed, 22 Jul 2015 12:49:53 -0400 Received: from bby1mta03.pmc-sierra.bc.ca (localhost.pmc-sierra.bc.ca [127.0.0.1]) by localhost (Postfix) with SMTP id 8CC521070966; Wed, 22 Jul 2015 09:49:52 -0700 (PDT) Received: from smtp.pmcs.com (bby1cas04.pmc-sierra.internal [216.241.227.182]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) by bby1mta03.pmc-sierra.bc.ca (Postfix) with ESMTP id 6E032107095F; Wed, 22 Jul 2015 09:49:52 -0700 (PDT) Received: from localhost (216.241.227.4) by bby1cas04.pmc-sierra.internal (216.241.227.182) with Microsoft SMTP Server (TLS) id 14.3.123.3; Wed, 22 Jul 2015 09:49:51 -0700 From: To: , CC: , , , , , , Subject: [PATCH V5 05/11] [SCSI] aacraid: Tune response path if IsFastPath bit set Date: Wed, 22 Jul 2015 09:49:11 -0700 Message-ID: <1437583757-5449-6-git-send-email-rajinikanth.pandurangan@pmcs.com> X-Mailer: git-send-email 1.9.3 In-Reply-To: <1437583757-5449-1-git-send-email-rajinikanth.pandurangan@pmcs.com> References: <1437583757-5449-1-git-send-email-rajinikanth.pandurangan@pmcs.com> MIME-Version: 1.0 X-Originating-IP: [216.241.227.4] DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=pmcs.com; h=from:to:cc:subject:date:message-id:in-reply-to:references:mime-version:content-type; s=default; bh=mDDhQK63xYwdC1KmJJ7qw0qpHsGIdriDufZyFd1iv3w=; b=aN7IV3i+/jwBar2C/6UaD6U/8I1+wBahCV6m7S2vkSOZc3kMOM3VcmPMXnYv2zfT/V2ehi4tBi/zoDsCzIZ+fGnQiRe/iRVtdTST7JhR7IDqj5RhUaGG/E8aZMGpj/tw1mCBfqNHnKYbCAtHzH3inMe5l3jNtugo9fm8X5NsH7o= Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org X-Spam-Status: No, score=-8.0 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI,RP_MATCHES_RCVD,T_DKIM_INVALID,UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Rajinikanth Pandurangan Description: If 'IsFastPath' bit is set, then response path assumes no error and skips error check. Changes from V2: None Reviewed By: Tomas Henzl , Mahesh Rajashekhara , Johannes Thumshirn Signed-off-by: Rajinikanth Pandurangan --- drivers/scsi/aacraid/aachba.c | 259 ++++++++++++++++++++++-------------------- 1 file changed, 137 insertions(+), 122 deletions(-) diff --git a/drivers/scsi/aacraid/aachba.c b/drivers/scsi/aacraid/aachba.c index fe59b00..864e9f6 100644 --- a/drivers/scsi/aacraid/aachba.c +++ b/drivers/scsi/aacraid/aachba.c @@ -2977,11 +2977,16 @@ static void aac_srb_callback(void *context, struct fib * fibptr) return; BUG_ON(fibptr == NULL); - dev = fibptr->dev; - srbreply = (struct aac_srb_reply *) fib_data(fibptr); + scsi_dma_unmap(scsicmd); + /* expose physical device if expose_physicald flag is on */ + if (scsicmd->cmnd[0] == INQUIRY && !(scsicmd->cmnd[1] & 0x01) + && expose_physicals > 0) + aac_expose_phy_device(scsicmd); + + srbreply = (struct aac_srb_reply *) fib_data(fibptr); scsicmd->sense_buffer[0] = '\0'; /* Initialize sense valid flag to false */ if (fibptr->flags & FIB_CONTEXT_FLAG_FASTRESP) { @@ -2994,147 +2999,157 @@ static void aac_srb_callback(void *context, struct fib * fibptr) */ scsi_set_resid(scsicmd, scsi_bufflen(scsicmd) - le32_to_cpu(srbreply->data_xfer_length)); - } - - scsi_dma_unmap(scsicmd); - - /* expose physical device if expose_physicald flag is on */ - if (scsicmd->cmnd[0] == INQUIRY && !(scsicmd->cmnd[1] & 0x01) - && expose_physicals > 0) - aac_expose_phy_device(scsicmd); + /* + * First check the fib status + */ - /* - * First check the fib status - */ + if (le32_to_cpu(srbreply->status) != ST_OK) { + int len; - if (le32_to_cpu(srbreply->status) != ST_OK){ - int len; - printk(KERN_WARNING "aac_srb_callback: srb failed, status = %d\n", le32_to_cpu(srbreply->status)); - len = min_t(u32, le32_to_cpu(srbreply->sense_data_size), - SCSI_SENSE_BUFFERSIZE); - scsicmd->result = DID_ERROR << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_CHECK_CONDITION; - memcpy(scsicmd->sense_buffer, srbreply->sense_data, len); - } + printk(KERN_WARNING "aac_srb_callback: srb failed, status = %d\n", le32_to_cpu(srbreply->status)); + len = min_t(u32, le32_to_cpu(srbreply->sense_data_size), + SCSI_SENSE_BUFFERSIZE); + scsicmd->result = DID_ERROR << 16 + | COMMAND_COMPLETE << 8 + | SAM_STAT_CHECK_CONDITION; + memcpy(scsicmd->sense_buffer, + srbreply->sense_data, len); + } - /* - * Next check the srb status - */ - switch( (le32_to_cpu(srbreply->srb_status))&0x3f){ - case SRB_STATUS_ERROR_RECOVERY: - case SRB_STATUS_PENDING: - case SRB_STATUS_SUCCESS: - scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8; - break; - case SRB_STATUS_DATA_OVERRUN: - switch(scsicmd->cmnd[0]){ - case READ_6: - case WRITE_6: - case READ_10: - case WRITE_10: - case READ_12: - case WRITE_12: - case READ_16: - case WRITE_16: - if (le32_to_cpu(srbreply->data_xfer_length) < scsicmd->underflow) { - printk(KERN_WARNING"aacraid: SCSI CMD underflow\n"); - } else { - printk(KERN_WARNING"aacraid: SCSI CMD Data Overrun\n"); + /* + * Next check the srb status + */ + switch ((le32_to_cpu(srbreply->srb_status))&0x3f) { + case SRB_STATUS_ERROR_RECOVERY: + case SRB_STATUS_PENDING: + case SRB_STATUS_SUCCESS: + scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8; + break; + case SRB_STATUS_DATA_OVERRUN: + switch (scsicmd->cmnd[0]) { + case READ_6: + case WRITE_6: + case READ_10: + case WRITE_10: + case READ_12: + case WRITE_12: + case READ_16: + case WRITE_16: + if (le32_to_cpu(srbreply->data_xfer_length) + < scsicmd->underflow) + printk(KERN_WARNING"aacraid: SCSI CMD underflow\n"); + else + printk(KERN_WARNING"aacraid: SCSI CMD Data Overrun\n"); + scsicmd->result = DID_ERROR << 16 + | COMMAND_COMPLETE << 8; + break; + case INQUIRY: { + scsicmd->result = DID_OK << 16 + | COMMAND_COMPLETE << 8; + break; + } + default: + scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8; + break; } - scsicmd->result = DID_ERROR << 16 | COMMAND_COMPLETE << 8; break; - case INQUIRY: { - scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8; + case SRB_STATUS_ABORTED: + scsicmd->result = DID_ABORT << 16 | ABORT << 8; break; - } - default: - scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8; + case SRB_STATUS_ABORT_FAILED: + /* + * Not sure about this one - but assuming the + * hba was trying to abort for some reason + */ + scsicmd->result = DID_ERROR << 16 | ABORT << 8; + break; + case SRB_STATUS_PARITY_ERROR: + scsicmd->result = DID_PARITY << 16 + | MSG_PARITY_ERROR << 8; + break; + case SRB_STATUS_NO_DEVICE: + case SRB_STATUS_INVALID_PATH_ID: + case SRB_STATUS_INVALID_TARGET_ID: + case SRB_STATUS_INVALID_LUN: + case SRB_STATUS_SELECTION_TIMEOUT: + scsicmd->result = DID_NO_CONNECT << 16 + | COMMAND_COMPLETE << 8; break; - } - break; - case SRB_STATUS_ABORTED: - scsicmd->result = DID_ABORT << 16 | ABORT << 8; - break; - case SRB_STATUS_ABORT_FAILED: - // Not sure about this one - but assuming the hba was trying to abort for some reason - scsicmd->result = DID_ERROR << 16 | ABORT << 8; - break; - case SRB_STATUS_PARITY_ERROR: - scsicmd->result = DID_PARITY << 16 | MSG_PARITY_ERROR << 8; - break; - case SRB_STATUS_NO_DEVICE: - case SRB_STATUS_INVALID_PATH_ID: - case SRB_STATUS_INVALID_TARGET_ID: - case SRB_STATUS_INVALID_LUN: - case SRB_STATUS_SELECTION_TIMEOUT: - scsicmd->result = DID_NO_CONNECT << 16 | COMMAND_COMPLETE << 8; - break; - case SRB_STATUS_COMMAND_TIMEOUT: - case SRB_STATUS_TIMEOUT: - scsicmd->result = DID_TIME_OUT << 16 | COMMAND_COMPLETE << 8; - break; + case SRB_STATUS_COMMAND_TIMEOUT: + case SRB_STATUS_TIMEOUT: + scsicmd->result = DID_TIME_OUT << 16 + | COMMAND_COMPLETE << 8; + break; - case SRB_STATUS_BUSY: - scsicmd->result = DID_BUS_BUSY << 16 | COMMAND_COMPLETE << 8; - break; + case SRB_STATUS_BUSY: + scsicmd->result = DID_BUS_BUSY << 16 + | COMMAND_COMPLETE << 8; + break; - case SRB_STATUS_BUS_RESET: - scsicmd->result = DID_RESET << 16 | COMMAND_COMPLETE << 8; - break; + case SRB_STATUS_BUS_RESET: + scsicmd->result = DID_RESET << 16 + | COMMAND_COMPLETE << 8; + break; - case SRB_STATUS_MESSAGE_REJECTED: - scsicmd->result = DID_ERROR << 16 | MESSAGE_REJECT << 8; - break; - case SRB_STATUS_REQUEST_FLUSHED: - case SRB_STATUS_ERROR: - case SRB_STATUS_INVALID_REQUEST: - case SRB_STATUS_REQUEST_SENSE_FAILED: - case SRB_STATUS_NO_HBA: - case SRB_STATUS_UNEXPECTED_BUS_FREE: - case SRB_STATUS_PHASE_SEQUENCE_FAILURE: - case SRB_STATUS_BAD_SRB_BLOCK_LENGTH: - case SRB_STATUS_DELAYED_RETRY: - case SRB_STATUS_BAD_FUNCTION: - case SRB_STATUS_NOT_STARTED: - case SRB_STATUS_NOT_IN_USE: - case SRB_STATUS_FORCE_ABORT: - case SRB_STATUS_DOMAIN_VALIDATION_FAIL: - default: + case SRB_STATUS_MESSAGE_REJECTED: + scsicmd->result = DID_ERROR << 16 + | MESSAGE_REJECT << 8; + break; + case SRB_STATUS_REQUEST_FLUSHED: + case SRB_STATUS_ERROR: + case SRB_STATUS_INVALID_REQUEST: + case SRB_STATUS_REQUEST_SENSE_FAILED: + case SRB_STATUS_NO_HBA: + case SRB_STATUS_UNEXPECTED_BUS_FREE: + case SRB_STATUS_PHASE_SEQUENCE_FAILURE: + case SRB_STATUS_BAD_SRB_BLOCK_LENGTH: + case SRB_STATUS_DELAYED_RETRY: + case SRB_STATUS_BAD_FUNCTION: + case SRB_STATUS_NOT_STARTED: + case SRB_STATUS_NOT_IN_USE: + case SRB_STATUS_FORCE_ABORT: + case SRB_STATUS_DOMAIN_VALIDATION_FAIL: + default: #ifdef AAC_DETAILED_STATUS_INFO - printk("aacraid: SRB ERROR(%u) %s scsi cmd 0x%x - scsi status 0x%x\n", - le32_to_cpu(srbreply->srb_status) & 0x3F, - aac_get_status_string( - le32_to_cpu(srbreply->srb_status) & 0x3F), - scsicmd->cmnd[0], - le32_to_cpu(srbreply->scsi_status)); + printk(KERN_INFO "aacraid: SRB ERROR(%u) %s scsi cmd 0x%x - scsi status 0x%x\n", + le32_to_cpu(srbreply->srb_status) & 0x3F, + aac_get_status_string( + le32_to_cpu(srbreply->srb_status) & 0x3F), + scsicmd->cmnd[0], + le32_to_cpu(srbreply->scsi_status)); #endif - if ((scsicmd->cmnd[0] == ATA_12) - || (scsicmd->cmnd[0] == ATA_16)) { - if (scsicmd->cmnd[2] & (0x01 << 5)) { - scsicmd->result = DID_OK << 16 - | COMMAND_COMPLETE << 8; + if ((scsicmd->cmnd[0] == ATA_12) + || (scsicmd->cmnd[0] == ATA_16)) { + if (scsicmd->cmnd[2] & (0x01 << 5)) { + scsicmd->result = DID_OK << 16 + | COMMAND_COMPLETE << 8; break; + } else { + scsicmd->result = DID_ERROR << 16 + | COMMAND_COMPLETE << 8; + break; + } } else { scsicmd->result = DID_ERROR << 16 - | COMMAND_COMPLETE << 8; + | COMMAND_COMPLETE << 8; break; } - } else { - scsicmd->result = DID_ERROR << 16 - | COMMAND_COMPLETE << 8; - break; } - } - if (le32_to_cpu(srbreply->scsi_status) == SAM_STAT_CHECK_CONDITION) { - int len; - scsicmd->result |= SAM_STAT_CHECK_CONDITION; - len = min_t(u32, le32_to_cpu(srbreply->sense_data_size), - SCSI_SENSE_BUFFERSIZE); + if (le32_to_cpu(srbreply->scsi_status) + == SAM_STAT_CHECK_CONDITION) { + int len; + + scsicmd->result |= SAM_STAT_CHECK_CONDITION; + len = min_t(u32, le32_to_cpu(srbreply->sense_data_size), + SCSI_SENSE_BUFFERSIZE); #ifdef AAC_DETAILED_STATUS_INFO - printk(KERN_WARNING "aac_srb_callback: check condition, status = %d len=%d\n", - le32_to_cpu(srbreply->status), len); + printk(KERN_WARNING "aac_srb_callback: check condition, status = %d len=%d\n", + le32_to_cpu(srbreply->status), len); #endif - memcpy(scsicmd->sense_buffer, srbreply->sense_data, len); + memcpy(scsicmd->sense_buffer, + srbreply->sense_data, len); + } } /* * OR in the scsi status (already shifted up a bit)