From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758092AbcCaS5r (ORCPT ); Thu, 31 Mar 2016 14:57:47 -0400 Received: from smtprelay4.synopsys.com ([198.182.47.9]:58513 "EHLO smtprelay.synopsys.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758010AbcCaS5o (ORCPT ); Thu, 31 Mar 2016 14:57:44 -0400 From: Joao Pinto To: tomas.winkler@intel.com Cc: vinholikatti@gmail.com, julian.calaby@gmail.com, akinobu.mita@gmail.com, hch@infradead.org, gbroner@codeaurora.org, subhashj@codeaurora.org, CARLOS.PALMINHA@synopsys.com, ijc+devicetree@hellion.org.uk, linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, devicetree@vger.kernel.org, arnd@arndb.de, mark.rutland@arm.com, Joao Pinto Subject: [PATCH v12 3/9] added UFS 2.0 capabilities Date: Thu, 31 Mar 2016 19:57:16 +0100 Message-Id: <40585ae835f02d3b5550a32553b2189754e365b6.1459448160.git.jpinto@synopsys.com> X-Mailer: git-send-email 1.8.1.5 In-Reply-To: References: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Adding UFS 2.0 support to the UFS core driver. Signed-off-by: Joao Pinto --- Changes v11->v12 (Tomas Winkler): - devicetree binding tweak was moved to a separated patch - unipro tweaks were moved to a separated patch - ufshcd_compose_upiu was decomposed in 2 functions - UTP_CMD_TYPE_UFS_STORAGE is now 0x1 (previously was 0x11) Changes v8->v11: - Nothing changed (just to keep up with patch set version). Changes v7->v8: - Added "jedec, ufs-2.0" to the ufschd-platform compatibility strings Changes v0->v7: - Nothing changed (just to keep up with patch set version). drivers/scsi/ufs/ufshcd.c | 90 ++++++++++++++++++++++++++--------------------- drivers/scsi/ufs/ufshci.h | 5 +++ 2 files changed, 54 insertions(+), 41 deletions(-) diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 9c1b94b..a69d637 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -1127,7 +1127,7 @@ static void ufshcd_disable_intr(struct ufs_hba *hba, u32 intrs) * @cmd_dir: requests data direction */ static void ufshcd_prepare_req_desc_hdr(struct ufshcd_lrb *lrbp, - u32 *upiu_flags, enum dma_data_direction cmd_dir) + u32 *upiu_flags, enum dma_data_direction cmd_dir) { struct utp_transfer_req_desc *req_desc = lrbp->utr_descriptor_ptr; u32 data_direction; @@ -1253,47 +1253,55 @@ static inline void ufshcd_prepare_utp_nop_upiu(struct ufshcd_lrb *lrbp) } /** - * ufshcd_compose_upiu - form UFS Protocol Information Unit(UPIU) + * ufshcd_comp_devman_upiu - UFS Protocol Information Unit(UPIU) + * for Device Management Purposes * @hba - per adapter instance * @lrb - pointer to local reference block */ -static int ufshcd_compose_upiu(struct ufs_hba *hba, struct ufshcd_lrb *lrbp) +static int ufshcd_comp_devman_upiu(struct ufs_hba *hba, struct ufshcd_lrb *lrbp) { u32 upiu_flags; int ret = 0; - switch (lrbp->command_type) { - case UTP_CMD_TYPE_SCSI: - if (likely(lrbp->cmd)) { - ufshcd_prepare_req_desc_hdr(lrbp, &upiu_flags, - lrbp->cmd->sc_data_direction); - ufshcd_prepare_utp_scsi_cmd_upiu(lrbp, upiu_flags); - } else { - ret = -EINVAL; - } - break; - case UTP_CMD_TYPE_DEV_MANAGE: - ufshcd_prepare_req_desc_hdr(lrbp, &upiu_flags, DMA_NONE); - if (hba->dev_cmd.type == DEV_CMD_TYPE_QUERY) - ufshcd_prepare_utp_query_req_upiu( - hba, lrbp, upiu_flags); - else if (hba->dev_cmd.type == DEV_CMD_TYPE_NOP) - ufshcd_prepare_utp_nop_upiu(lrbp); - else - ret = -EINVAL; - break; - case UTP_CMD_TYPE_UFS: - /* For UFS native command implementation */ - ret = -ENOTSUPP; - dev_err(hba->dev, "%s: UFS native command are not supported\n", - __func__); - break; - default: - ret = -ENOTSUPP; - dev_err(hba->dev, "%s: unknown command type: 0x%x\n", - __func__, lrbp->command_type); - break; - } /* end of switch */ + if (hba->ufs_version == UFSHCI_VERSION_20) + lrbp->command_type = UTP_CMD_TYPE_UFS_STORAGE; + else + lrbp->command_type = UTP_CMD_TYPE_DEV_MANAGE; + + ufshcd_prepare_req_desc_hdr(lrbp, &upiu_flags, DMA_NONE); + if (hba->dev_cmd.type == DEV_CMD_TYPE_QUERY) + ufshcd_prepare_utp_query_req_upiu(hba, lrbp, upiu_flags); + else if (hba->dev_cmd.type == DEV_CMD_TYPE_NOP) + ufshcd_prepare_utp_nop_upiu(lrbp); + else + ret = -EINVAL; + + return ret; +} + +/** + * ufshcd_comp_scsi_upiu - UFS Protocol Information Unit(UPIU) + * for SCSI Purposes + * @hba - per adapter instance + * @lrb - pointer to local reference block + */ +static int ufshcd_comp_scsi_upiu(struct ufs_hba *hba, struct ufshcd_lrb *lrbp) +{ + u32 upiu_flags; + int ret = 0; + + if (hba->ufs_version == UFSHCI_VERSION_20) + lrbp->command_type = UTP_CMD_TYPE_UFS_STORAGE; + else + lrbp->command_type = UTP_CMD_TYPE_SCSI; + + if (likely(lrbp->cmd)) { + ufshcd_prepare_req_desc_hdr(lrbp, &upiu_flags, + lrbp->cmd->sc_data_direction); + ufshcd_prepare_utp_scsi_cmd_upiu(lrbp, upiu_flags); + } else { + ret = -EINVAL; + } return ret; } @@ -1405,10 +1414,9 @@ static int ufshcd_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd) lrbp->task_tag = tag; lrbp->lun = ufshcd_scsi_to_upiu_lun(cmd->device->lun); lrbp->intr_cmd = !ufshcd_is_intr_aggr_allowed(hba) ? true : false; - lrbp->command_type = UTP_CMD_TYPE_SCSI; - /* form UPIU before issuing the command */ - ufshcd_compose_upiu(hba, lrbp); + ufshcd_comp_scsi_upiu(hba, lrbp); + err = ufshcd_map_sg(lrbp); if (err) { lrbp->cmd = NULL; @@ -1433,11 +1441,10 @@ static int ufshcd_compose_dev_cmd(struct ufs_hba *hba, lrbp->sense_buffer = NULL; lrbp->task_tag = tag; lrbp->lun = 0; /* device management cmd is not specific to any LUN */ - lrbp->command_type = UTP_CMD_TYPE_DEV_MANAGE; lrbp->intr_cmd = true; /* No interrupt aggregation */ hba->dev_cmd.type = cmd_type; - return ufshcd_compose_upiu(hba, lrbp); + return ufshcd_comp_devman_upiu(hba, lrbp); } static int @@ -3403,7 +3410,8 @@ static void ufshcd_transfer_req_compl(struct ufs_hba *hba) /* Do not touch lrbp after scsi done */ cmd->scsi_done(cmd); __ufshcd_release(hba); - } else if (lrbp->command_type == UTP_CMD_TYPE_DEV_MANAGE) { + } else if (lrbp->command_type == UTP_CMD_TYPE_DEV_MANAGE || + lrbp->command_type == UTP_CMD_TYPE_UFS_STORAGE) { if (hba->dev_cmd.complete) complete(hba->dev_cmd.complete); } diff --git a/drivers/scsi/ufs/ufshci.h b/drivers/scsi/ufs/ufshci.h index 0ae0967..20ece18 100644 --- a/drivers/scsi/ufs/ufshci.h +++ b/drivers/scsi/ufs/ufshci.h @@ -275,6 +275,11 @@ enum { UTP_CMD_TYPE_DEV_MANAGE = 0x2, }; +/* To accomodate UFS2.0 required Command type */ +enum { + UTP_CMD_TYPE_UFS_STORAGE = 0x1, +}; + enum { UTP_SCSI_COMMAND = 0x00000000, UTP_NATIVE_UFS_COMMAND = 0x10000000, -- 1.8.1.5