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Date: Wed, 2 Nov 2022 13:30:56 +0800
From: Jiaming Li <lijiaming3@...omi.corp-partner.google.com>
To: alim.akhtar@...sung.com, avri.altman@....com, bvanassche@....org
Cc: linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
lijiaming3 <lijiaming3@...omi.com>
Subject: [RESEND PATCH 2/4] scsi:ufs:add File-Based Optimization descriptor
From: lijiaming3 <lijiaming3@...omi.com>
The full information about the descriptor could be found
at UFS specifications - FBO extension.
Signed-off-by: lijiaming3 <lijiaming3@...omi.com>
---
Documentation/ABI/testing/sysfs-driver-ufs | 65 ++++++++++++++++++++++
drivers/ufs/core/ufs-sysfs.c | 26 +++++++++
include/ufs/ufs.h | 13 +++++
3 files changed, 104 insertions(+)
diff --git a/Documentation/ABI/testing/sysfs-driver-ufs b/Documentation/ABI/testing/sysfs-driver-ufs
index 228aa43e14ed..63daccbf7a8d 100644
--- a/Documentation/ABI/testing/sysfs-driver-ufs
+++ b/Documentation/ABI/testing/sysfs-driver-ufs
@@ -1710,3 +1710,68 @@ Contact: Avri Altman <avri.altman@....com>
Description: In host control mode the host is the originator of map requests.
To avoid flooding the device with map requests, use a simple throttling
mechanism that limits the number of inflight map requests.
+
+What: /sys/bus/platform/drivers/ufshcd/*/fbo_descriptor/fbo_version
+What: /sys/bus/platform/devices/*.ufs/fbo_descriptor/fbo_version
+Date: November 2022
+Contact: li jiaming <lijiaming3@...omi.com>
+Description: This file shows the version of UFS file-based optimization. This
+ is one of the UFS fbo descriptor parameters. The full information about
+ the descriptor could be found at UFS specifications - FBO extension.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/fbo_descriptor/fbo_rec_lrs
+What: /sys/bus/platform/devices/*.ufs/fbo_descriptor/fbo_rec_lrs
+Date: November 2022
+Contact: li jiaming <lijiaming3@...omi.com>
+Description: This file shows the recommended LBA range size of UFS file-based
+ optimization to be used by the host. This is one of the UFS fbo descriptor
+ parameters. The full information about the descriptor could be found at UFS
+ specifications - FBO extension.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/fbo_descriptor/fbo_max_lrs
+What: /sys/bus/platform/devices/*.ufs/fbo_descriptor/fbo_max_lrs
+Date: November 2022
+Contact: li jiaming <lijiaming3@...omi.com>
+Description: This file shows the max LBA range size of UFS file-based
+ optimization to be used by the host. This is one of the UFS fbo descriptor
+ parameters. The full information about the descriptor could be found at UFS
+ specifications - FBO extension.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/fbo_descriptor/fbo_min_lrs
+What: /sys/bus/platform/devices/*.ufs/fbo_descriptor/fbo_min_lrs
+Date: November 2022
+Contact: li jiaming <lijiaming3@...omi.com>
+Description: This file shows the min LBA range size of UFS file-based
+ optimization to be used by the host. This is one of the UFS fbo descriptor
+ parameters. The full information about the descriptor could be found at UFS
+ specifications - FBO extension.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/fbo_descriptor/fbo_max_lrc
+What: /sys/bus/platform/devices/*.ufs/fbo_descriptor/fbo_max_lrc
+Date: November 2022
+Contact: li jiaming <lijiaming3@...omi.com>
+Description: This file shows the max number of LBA ranges supported by read/write
+ buffer command of UFS file-based optimization. This is one of the UFS fbo
+ descriptor parameters. The full information about the descriptor could be
+ found at UFS specifications - FBO extension.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/fbo_descriptor/fbo_lra
+What: /sys/bus/platform/devices/*.ufs/fbo_descriptor/fbo_lra
+Date: November 2022
+Contact: li jiaming <lijiaming3@...omi.com>
+Description: This file shows the alignment requirement of UFS file-based
+ optimization. This is one of the UFS fbo descriptor parameters. The
+ full information about the descriptor could be found at UFS
+ specifications - FBO extension.
+
+ The file is read only.
diff --git a/drivers/ufs/core/ufs-sysfs.c b/drivers/ufs/core/ufs-sysfs.c
index 53aea56d1de1..006d99b15be0 100644
--- a/drivers/ufs/core/ufs-sysfs.c
+++ b/drivers/ufs/core/ufs-sysfs.c
@@ -871,6 +871,31 @@ static const struct attribute_group ufs_sysfs_health_descriptor_group = {
.attrs = ufs_sysfs_health_descriptor,
};
+#define UFS_FBO_DESC_PARAM(_name, _uname, _size) \
+ UFS_DESC_PARAM(_name, _uname, FBO, _size)
+
+UFS_FBO_DESC_PARAM(fbo_version, _VERSION, 2);
+UFS_FBO_DESC_PARAM(fbo_rec_lrs, _REC_LBA_RANGE_SIZE, 4);
+UFS_FBO_DESC_PARAM(fbo_max_lrs, _MAX_LBA_RANGE_SIZE, 4);
+UFS_FBO_DESC_PARAM(fbo_min_lrs, _MIN_LBA_RANGE_SIZE, 4);
+UFS_FBO_DESC_PARAM(fbo_max_lrc, _MAX_LBA_RANGE_CONUT, 1);
+UFS_FBO_DESC_PARAM(fbo_lra, _MAX_LBA_RANGE_ALIGNMENT, 2);
+
+static struct attribute *ufs_sysfs_fbo_descriptor[] = {
+ &dev_attr_fbo_version.attr,
+ &dev_attr_fbo_rec_lrs.attr,
+ &dev_attr_fbo_max_lrs.attr,
+ &dev_attr_fbo_min_lrs.attr,
+ &dev_attr_fbo_max_lrc.attr,
+ &dev_attr_fbo_lra.attr,
+ NULL,
+};
+
+static const struct attribute_group ufs_sysfs_fbo_descriptor_group = {
+ .name = "fbo_descriptor",
+ .attrs = ufs_sysfs_fbo_descriptor,
+};
+
#define UFS_POWER_DESC_PARAM(_name, _uname, _index) \
static ssize_t _name##_index##_show(struct device *dev, \
struct device_attribute *attr, char *buf) \
@@ -1220,6 +1245,7 @@ static const struct attribute_group *ufs_sysfs_groups[] = {
&ufs_sysfs_interconnect_descriptor_group,
&ufs_sysfs_geometry_descriptor_group,
&ufs_sysfs_health_descriptor_group,
+ &ufs_sysfs_fbo_descriptor_group,
&ufs_sysfs_power_descriptor_group,
&ufs_sysfs_string_descriptors_group,
&ufs_sysfs_flags_group,
diff --git a/include/ufs/ufs.h b/include/ufs/ufs.h
index 1bba3fead2ce..c3fd954ce005 100644
--- a/include/ufs/ufs.h
+++ b/include/ufs/ufs.h
@@ -179,6 +179,7 @@ enum desc_idn {
QUERY_DESC_IDN_GEOMETRY = 0x7,
QUERY_DESC_IDN_POWER = 0x8,
QUERY_DESC_IDN_HEALTH = 0x9,
+ QUERY_DESC_IDN_FBO = 0xA,
QUERY_DESC_IDN_MAX,
};
@@ -319,6 +320,17 @@ enum health_desc_param {
HEALTH_DESC_PARAM_LIFE_TIME_EST_B = 0x4,
};
+/* File-based Optimization descriptor parameters offsets in bytes */
+enum fbo_desc_param {
+ FBO_DESC_PARAM_LEN = 0x0,
+ FBO_DESC_PARAM_VERSION = 0x1,
+ FBO_DESC_PARAM_REC_LBA_RANGE_SIZE = 0x3,
+ FBO_DESC_PARAM_MAX_LBA_RANGE_SIZE = 0x7,
+ FBO_DESC_PARAM_MIN_LBA_RANGE_SIZE = 0xB,
+ FBO_DESC_PARAM_MAX_LBA_RANGE_CONUT = 0xF,
+ FBO_DESC_PARAM_MAX_LBA_RANGE_ALIGNMENT = 0x10,
+};
+
/* WriteBooster buffer mode */
enum {
WB_BUF_MODE_LU_DEDICATED = 0x0,
@@ -352,6 +364,7 @@ enum {
UFS_DEV_EXT_TEMP_NOTIF = BIT(6),
UFS_DEV_HPB_SUPPORT = BIT(7),
UFS_DEV_WRITE_BOOSTER_SUP = BIT(8),
+ UFS_DEV_FBO_SUP = BIT(17),
};
#define UFS_DEV_HPB_SUPPORT_VERSION 0x310
--
2.38.1
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