From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sujit Reddy Thumma Subject: [PATCH V3 0/2] Add suport for internal request (NOP and Query Request) Date: Tue, 9 Jul 2013 14:45:08 +0530 Message-ID: <1373361310-30674-1-git-send-email-sthumma@codeaurora.org> Return-path: Received: from smtp.codeaurora.org ([198.145.11.231]:50343 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753315Ab3GIJPV (ORCPT ); Tue, 9 Jul 2013 05:15:21 -0400 Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: Vinayak Holikatti , Santosh Y Cc: "James E.J. Bottomley" , linux-scsi@vger.kernel.org, Sujit Reddy Thumma , linux-arm-msm@vger.kernel.org This patch series replace the previous Query Request and NOP patches: [PATCH 1/8] scsi: ufs: add support for query [PATCH 6/8] scsi: ufs: Add support for sending NOP OUT UPIU [PATCH 7/8] scsi: ufs: Set fDeviceInit flag to initiate device initialization Major difference - Sending the query request via the SCSI vendor specific command can cause a deadlock in case the SCSI command queue is blocked and we would like to send a query request (for example fDeviceInit in case of re-initialization). In addition, usage of a vendor specific SCSI command for UFS can cause future conflicts if this vendor specific command will be allocated for a different usage. The new patch series gets an internal tag for NOP and query requests and do not involve the SCSI layer in UFS specific requests transfers. This design also resolves the possible deadlock mentioned above. Changes from v2: - Rebased on scsi-misc branche (commit 8c0eb596baa5) - Minor addition to structure documentation in ufshcd.h Changes from v1 - Allocate a tag for device management commands dynamically instead of reserving tag[MAX_QUEUE - 1]. - Changed the "internal_cmd" naming to "dev_cmd" to avoid confusion with other type of internal commands other than NOP and QUERY. Dolev Raviv (1): scsi: ufs: Set fDeviceInit flag to initiate device initialization Sujit Reddy Thumma (1): scsi: ufs: Add support for sending NOP OUT UPIU drivers/scsi/ufs/ufs.h | 127 ++++++- drivers/scsi/ufs/ufshcd.c | 886 +++++++++++++++++++++++++++++++++++++++------ drivers/scsi/ufs/ufshcd.h | 43 ++- drivers/scsi/ufs/ufshci.h | 2 +- 4 files changed, 939 insertions(+), 119 deletions(-) -- QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation.