From patchwork Thu Sep 19 11:14:03 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sujit Reddy Thumma X-Patchwork-Id: 2910761 Return-Path: X-Original-To: patchwork-linux-arm-msm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 4F9E39F1E1 for ; Thu, 19 Sep 2013 11:14:39 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id E83DF20412 for ; Thu, 19 Sep 2013 11:14:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B8B27203FD for ; Thu, 19 Sep 2013 11:14:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753359Ab3ISLOc (ORCPT ); Thu, 19 Sep 2013 07:14:32 -0400 Received: from smtp.codeaurora.org ([198.145.11.231]:40588 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752024Ab3ISLOb (ORCPT ); Thu, 19 Sep 2013 07:14:31 -0400 Received: from smtp.codeaurora.org (localhost [127.0.0.1]) by smtp.codeaurora.org (Postfix) with ESMTP id AE4FC13EDB0; Thu, 19 Sep 2013 11:14:30 +0000 (UTC) Received: by smtp.codeaurora.org (Postfix, from userid 486) id 9A95613EF86; Thu, 19 Sep 2013 11:14:30 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Spam-Level: X-Spam-Status: No, score=-7.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from srthumm-ics.qualcomm.com (unknown [202.46.23.54]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) (Authenticated sender: sthumma@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id 5B87713EDB0; Thu, 19 Sep 2013 11:14:27 +0000 (UTC) From: Sujit Reddy Thumma To: Vinayak Holikatti , Santosh Y Cc: "James E.J. Bottomley" , linux-scsi@vger.kernel.org, Sujit Reddy Thumma , linux-arm-msm@vger.kernel.org Subject: [PATCH V7 1/6] scsi: ufs: fix endianness sparse warnings Date: Thu, 19 Sep 2013 16:44:03 +0530 Message-Id: <1379589248-3317-2-git-send-email-sthumma@codeaurora.org> X-Mailer: git-send-email 1.8.2.1 In-Reply-To: <1379589248-3317-1-git-send-email-sthumma@codeaurora.org> References: <1379589248-3317-1-git-send-email-sthumma@codeaurora.org> X-Virus-Scanned: ClamAV using ClamSMTP Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Fix many warnings with incorrect endian assumptions which makes the code unportable to new architectures. The UFS specification defines the byte order as big-endian for UPIU structure and little-endian for the host controller transfer/task management descriptors. Signed-off-by: Sujit Reddy Thumma Acked-by: Vinayak Holikatti --- drivers/scsi/ufs/ufs.h | 36 ++++++++++++++++++------------------ drivers/scsi/ufs/ufshcd.c | 42 ++++++++---------------------------------- drivers/scsi/ufs/ufshci.h | 32 ++++++++++++++++---------------- 3 files changed, 42 insertions(+), 68 deletions(-) diff --git a/drivers/scsi/ufs/ufs.h b/drivers/scsi/ufs/ufs.h index 7210500..f42d1ce 100644 --- a/drivers/scsi/ufs/ufs.h +++ b/drivers/scsi/ufs/ufs.h @@ -196,9 +196,9 @@ enum { * @dword_2: UPIU header DW-2 */ struct utp_upiu_header { - u32 dword_0; - u32 dword_1; - u32 dword_2; + __be32 dword_0; + __be32 dword_1; + __be32 dword_2; }; /** @@ -207,7 +207,7 @@ struct utp_upiu_header { * @cdb: Command Descriptor Block CDB DW-4 to DW-7 */ struct utp_upiu_cmd { - u32 exp_data_transfer_len; + __be32 exp_data_transfer_len; u8 cdb[MAX_CDB_SIZE]; }; @@ -228,10 +228,10 @@ struct utp_upiu_query { u8 idn; u8 index; u8 selector; - u16 reserved_osf; - u16 length; - u32 value; - u32 reserved[2]; + __be16 reserved_osf; + __be16 length; + __be32 value; + __be32 reserved[2]; }; /** @@ -256,9 +256,9 @@ struct utp_upiu_req { * @sense_data: Sense data field DW-8 to DW-12 */ struct utp_cmd_rsp { - u32 residual_transfer_count; - u32 reserved[4]; - u16 sense_data_len; + __be32 residual_transfer_count; + __be32 reserved[4]; + __be16 sense_data_len; u8 sense_data[18]; }; @@ -286,10 +286,10 @@ struct utp_upiu_rsp { */ struct utp_upiu_task_req { struct utp_upiu_header header; - u32 input_param1; - u32 input_param2; - u32 input_param3; - u32 reserved[2]; + __be32 input_param1; + __be32 input_param2; + __be32 input_param3; + __be32 reserved[2]; }; /** @@ -301,9 +301,9 @@ struct utp_upiu_task_req { */ struct utp_upiu_task_rsp { struct utp_upiu_header header; - u32 output_param1; - u32 output_param2; - u32 reserved[3]; + __be32 output_param1; + __be32 output_param2; + __be32 reserved[3]; }; /** diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 04884d6..064c9d9 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -163,7 +163,7 @@ static inline int ufshcd_is_device_present(u32 reg_hcs) */ static inline int ufshcd_get_tr_ocs(struct ufshcd_lrb *lrbp) { - return lrbp->utr_descriptor_ptr->header.dword_2 & MASK_OCS; + return le32_to_cpu(lrbp->utr_descriptor_ptr->header.dword_2) & MASK_OCS; } /** @@ -176,7 +176,7 @@ static inline int ufshcd_get_tr_ocs(struct ufshcd_lrb *lrbp) static inline int ufshcd_get_tmr_ocs(struct utp_task_req_desc *task_req_descp) { - return task_req_descp->header.dword_2 & MASK_OCS; + return le32_to_cpu(task_req_descp->header.dword_2) & MASK_OCS; } /** @@ -390,26 +390,6 @@ static inline void ufshcd_copy_sense_data(struct ufshcd_lrb *lrbp) } /** - * ufshcd_query_to_cpu() - formats the buffer to native cpu endian - * @response: upiu query response to convert - */ -static inline void ufshcd_query_to_cpu(struct utp_upiu_query *response) -{ - response->length = be16_to_cpu(response->length); - response->value = be32_to_cpu(response->value); -} - -/** - * ufshcd_query_to_be() - formats the buffer to big endian - * @request: upiu query request to convert - */ -static inline void ufshcd_query_to_be(struct utp_upiu_query *request) -{ - request->length = cpu_to_be16(request->length); - request->value = cpu_to_be32(request->value); -} - -/** * ufshcd_copy_query_response() - Copy the Query Response and the data * descriptor * @hba: per adapter instance @@ -425,7 +405,6 @@ void ufshcd_copy_query_response(struct ufs_hba *hba, struct ufshcd_lrb *lrbp) UPIU_RSP_CODE_OFFSET; memcpy(&query_res->upiu_res, &lrbp->ucd_rsp_ptr->qr, QUERY_OSF_SIZE); - ufshcd_query_to_cpu(&query_res->upiu_res); /* Get the descriptor */ @@ -749,7 +728,7 @@ static void ufshcd_prepare_utp_query_req_upiu(struct ufs_hba *hba, { struct utp_upiu_req *ucd_req_ptr = lrbp->ucd_req_ptr; struct ufs_query *query = &hba->dev_cmd.query; - u16 len = query->request.upiu_req.length; + u16 len = be16_to_cpu(query->request.upiu_req.length); u8 *descp = (u8 *)lrbp->ucd_req_ptr + GENERAL_UPIU_REQUEST_SIZE; /* Query request header */ @@ -766,7 +745,6 @@ static void ufshcd_prepare_utp_query_req_upiu(struct ufs_hba *hba, /* Copy the Query Request buffer as is */ memcpy(&ucd_req_ptr->qr, &query->request.upiu_req, QUERY_OSF_SIZE); - ufshcd_query_to_be(&ucd_req_ptr->qr); /* Copy the Descriptor */ if ((len > 0) && (query->request.upiu_req.opcode == @@ -1151,7 +1129,7 @@ static int ufshcd_query_flag(struct ufs_hba *hba, enum query_opcode opcode, } if (flag_res) - *flag_res = (response->upiu_res.value & + *flag_res = (be32_to_cpu(response->upiu_res.value) & MASK_QUERY_UPIU_FLAG_LOC) & 0x1; out_unlock: @@ -1195,7 +1173,7 @@ int ufshcd_query_attr(struct ufs_hba *hba, enum query_opcode opcode, switch (opcode) { case UPIU_QUERY_OPCODE_WRITE_ATTR: request->query_func = UPIU_QUERY_FUNC_STANDARD_WRITE_REQUEST; - request->upiu_req.value = *attr_val; + request->upiu_req.value = cpu_to_be32(*attr_val); break; case UPIU_QUERY_OPCODE_READ_ATTR: request->query_func = UPIU_QUERY_FUNC_STANDARD_READ_REQUEST; @@ -1222,7 +1200,7 @@ int ufshcd_query_attr(struct ufs_hba *hba, enum query_opcode opcode, goto out_unlock; } - *attr_val = response->upiu_res.value; + *attr_val = be32_to_cpu(response->upiu_res.value); out_unlock: mutex_unlock(&hba->dev_cmd.lock); @@ -2568,12 +2546,8 @@ ufshcd_issue_tm_cmd(struct ufs_hba *hba, task_req_upiup->header.dword_1 = UPIU_HEADER_DWORD(0, tm_function, 0, 0); - task_req_upiup->input_param1 = lrbp->lun; - task_req_upiup->input_param1 = - cpu_to_be32(task_req_upiup->input_param1); - task_req_upiup->input_param2 = lrbp->task_tag; - task_req_upiup->input_param2 = - cpu_to_be32(task_req_upiup->input_param2); + task_req_upiup->input_param1 = cpu_to_be32(lrbp->lun); + task_req_upiup->input_param2 = cpu_to_be32(lrbp->task_tag); /* send command to the controller */ __set_bit(free_slot, &hba->outstanding_tasks); diff --git a/drivers/scsi/ufs/ufshci.h b/drivers/scsi/ufs/ufshci.h index 0475c66..9abc7e3 100644 --- a/drivers/scsi/ufs/ufshci.h +++ b/drivers/scsi/ufs/ufshci.h @@ -304,10 +304,10 @@ enum { * @size: size of physical segment DW-3 */ struct ufshcd_sg_entry { - u32 base_addr; - u32 upper_addr; - u32 reserved; - u32 size; + __le32 base_addr; + __le32 upper_addr; + __le32 reserved; + __le32 size; }; /** @@ -330,10 +330,10 @@ struct utp_transfer_cmd_desc { * @dword3: Descriptor Header DW3 */ struct request_desc_header { - u32 dword_0; - u32 dword_1; - u32 dword_2; - u32 dword_3; + __le32 dword_0; + __le32 dword_1; + __le32 dword_2; + __le32 dword_3; }; /** @@ -352,16 +352,16 @@ struct utp_transfer_req_desc { struct request_desc_header header; /* DW 4-5*/ - u32 command_desc_base_addr_lo; - u32 command_desc_base_addr_hi; + __le32 command_desc_base_addr_lo; + __le32 command_desc_base_addr_hi; /* DW 6 */ - u16 response_upiu_length; - u16 response_upiu_offset; + __le16 response_upiu_length; + __le16 response_upiu_offset; /* DW 7 */ - u16 prd_table_length; - u16 prd_table_offset; + __le16 prd_table_length; + __le16 prd_table_offset; }; /** @@ -376,10 +376,10 @@ struct utp_task_req_desc { struct request_desc_header header; /* DW 4-11 */ - u32 task_req_upiu[TASK_REQ_UPIU_SIZE_DWORDS]; + __le32 task_req_upiu[TASK_REQ_UPIU_SIZE_DWORDS]; /* DW 12-19 */ - u32 task_rsp_upiu[TASK_RSP_UPIU_SIZE_DWORDS]; + __le32 task_rsp_upiu[TASK_RSP_UPIU_SIZE_DWORDS]; }; #endif /* End of Header */