From: Tomas Winkler <tomas.winkler@intel.com>
To: "Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
"Ulf Hansson" <ulf.hansson@linaro.org>,
"Adrian Hunter" <adrian.hunter@intel.com>,
"James Bottomley" <James.Bottomley@HansenPartnership.com>,
"Martin K . Petersen" <martin.petersen@oracle.com>,
"Vinayak Holikatti" <vinholikatti@gmail.com>,
"Andy Lutomirski" <luto@kernel.org>,
"Arve Hjønnevåg" <arve@android.com>,
"Michael Ryleev" <gmar@google.com>,
"Joao Pinto" <Joao.Pinto@synopsys.com>,
"Christoph Hellwig" <hch@lst.de>,
"Yaniv Gardi" <ygardi@codeaurora.org>
Cc: Avri Altman <avri.altman@gmail.com>,
linux-kernel@vger.kernel.org, linux-mmc@vger.kernel.org,
linux-scsi@vger.kernel.org, linux-doc@vger.kernel.org,
Tomas Winkler <tomas.winkler@intel.com>,
Alexander Usyskin <alexander.usyskin@intel.com>
Subject: [PATCH v7 10/11] scsi: ufs: retrieve rpmb rw size
Date: Mon, 7 Nov 2016 21:53:13 +0200 [thread overview]
Message-ID: <1478548394-8184-11-git-send-email-tomas.winkler@intel.com> (raw)
In-Reply-To: <1478548394-8184-1-git-send-email-tomas.winkler@intel.com>
Retrieve maximum number of RPMB frames that can be
in a single request.
Currently the limitations is provided only for writes
via reliable_wr_cnt API.
V7: New in the series
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
---
drivers/scsi/ufs/ufs.h | 6 ++++++
drivers/scsi/ufs/ufshcd.c | 22 ++++++++++++++++++++++
2 files changed, 28 insertions(+)
diff --git a/drivers/scsi/ufs/ufs.h b/drivers/scsi/ufs/ufs.h
index 845b874e2977..84bb8d7c6b63 100644
--- a/drivers/scsi/ufs/ufs.h
+++ b/drivers/scsi/ufs/ufs.h
@@ -176,6 +176,12 @@ enum ufs_desc_max_size {
QUERY_DESC_RFU_MAX_SIZE = 0x00,
};
+enum geometry_desc_param_offset {
+ GEOMETRY_DESC_LEN = 0x0,
+ GEOMETRY_DESC_TYPE = 0x1,
+ GEOMETRY_DESC_RPMB_RW_SIZE = 0x17,
+};
+
/* Unit descriptor parameters offsets in bytes*/
enum unit_desc_param {
UNIT_DESC_PARAM_LEN = 0x0,
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 95bb9dc7fbfe..69f5b03f6774 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -2196,6 +2196,15 @@ static inline int ufshcd_read_unit_desc_param(struct ufs_hba *hba,
param_offset, param_read_buf, param_size);
}
+static inline int ufshcd_read_geometry_desc_param(struct ufs_hba *hba,
+ enum geometry_desc_param_offset param_offset,
+ u8 *param_read_buf, u32 param_size)
+{
+ return ufshcd_read_desc_param(hba, QUERY_DESC_IDN_GEOMETRY, 0,
+ param_offset, param_read_buf, param_size);
+}
+
+
/**
* ufshcd_memory_alloc - allocate memory for host memory space data structures
* @hba: per adapter instance
@@ -4896,6 +4905,19 @@ static struct rpmb_ops ufshcd_rpmb_dev_ops = {
static inline void ufshcd_rpmb_add(struct ufs_hba *hba)
{
struct rpmb_dev *rdev;
+ u8 rw_size;
+ int ret;
+
+ ret = ufshcd_read_geometry_desc_param(hba, GEOMETRY_DESC_RPMB_RW_SIZE,
+ &rw_size, sizeof(rw_size));
+ if (ret) {
+ dev_warn(hba->dev, "%s: cannot get rpmb rw limit %d\n",
+ dev_name(hba->dev), ret);
+ /* fallback to singel frame write */
+ rw_size = 1;
+ }
+
+ ufshcd_rpmb_dev_ops.reliable_wr_cnt = rw_size;
scsi_device_get(hba->sdev_ufs_rpmb);
rdev = rpmb_dev_register(hba->dev, &ufshcd_rpmb_dev_ops);
--
2.7.4
next prev parent reply other threads:[~2016-11-07 18:58 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-07 19:53 [PATCH v7 00/11] char:rpmb: Replay Protected Memory Block (RPMB) subsystem Tomas Winkler
2016-11-07 19:53 ` [PATCH v7 01/11] rpmb: add " Tomas Winkler
2016-11-07 19:53 ` [PATCH v7 02/11] rpmb: enable emmc specific read data fixup Tomas Winkler
2016-11-07 19:53 ` [PATCH v7 03/11] rpmb: add sysfs-class ABI documentation Tomas Winkler
2016-11-07 19:53 ` [PATCH v7 04/11] char: rpmb: add device attributes Tomas Winkler
2016-11-07 19:53 ` [PATCH v7 05/11] char: rpmb: provide a user space interface Tomas Winkler
2016-11-07 19:53 ` [PATCH v7 06/11] char: rpmb: add RPMB simulation device Tomas Winkler
2016-11-07 19:53 ` [PATCH v7 07/11] tools rpmb: add RPBM access tool Tomas Winkler
2016-11-07 19:53 ` [PATCH v7 08/11] mmc: block: register RPMB partition with the RPMB subsystem Tomas Winkler
2016-11-07 19:53 ` [PATCH v7 09/11] scsi: ufs: connect to " Tomas Winkler
2016-11-07 19:01 ` Christoph Hellwig
2016-11-07 19:27 ` Winkler, Tomas
2016-11-07 21:37 ` Christoph Hellwig
2017-03-22 21:25 ` Winkler, Tomas
2016-11-07 19:53 ` Tomas Winkler [this message]
2016-11-07 19:53 ` [PATCH v7 11/11] char: rpmb: Document Replay Protected Memory Block (RPMB) subsystem Tomas Winkler
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