[PATCH v2 00/29] UFS patches for kernel v5.19

[PATCH v2 00/29] UFS patches for kernel v5.19

[Bart Van Assche]

Hi Martin,

This patch series includes the following changes:
- Separation of UFS core and UFS driver source code into separate directories.
- Split the ufshcd.h header file into two header files - one file that
  defines the interface with UFS drivers and another file with definitions
  only used in the core.
- Multiple source code cleanup patches.
- A few patches with minor functional changes.

Please consider these changes for kernel v5.19.

Thank you,

Bart.

Changes compared to v1:
* Added a new patch with a source code comment spelling fix.
* Included a HPB change in patch "Simplify statements that return a boolean".
* Removed a superfluous test from patch "Remove ufshcd_lrb.sense_buffer".
* Dropped patch "Remove the LUN quiescing code from ufshcd_wl_shutdown()".
* Fixed indentation in patch "Make the config_scaling_param calls type safe".
* Improved the description of patch "Remove locking from around single register
  writes".
* Modified patch "Minimize #include directives" such that the current order of
  #include directives is preserved.
* Fixed support for CONFIG_SCSI_UFS_HWMON=n in patch "Split the ufshcd.h header
  file".
* In patch "Split the drivers/scsi/ufs directory", moved the UFS source files
  from drivers/scsi/ufs/ into drivers/ufs/.

Bart Van Assche (29):
  scsi: ufs: Fix a spelling error in a source code comment
  scsi: ufs: Declare ufshcd_wait_for_register() static
  scsi: ufs: Remove superfluous boolean conversions
  scsi: ufs: Simplify statements that return a boolean
  scsi: ufs: Remove ufshcd_lrb.sense_bufflen
  scsi: ufs: Remove ufshcd_lrb.sense_buffer
  scsi: ufs: Use get_unaligned_be16() instead of be16_to_cpup()
  scsi: ufs: Remove the UFS_FIX() and END_FIX() macros
  scsi: ufs: Rename struct ufs_dev_fix into ufs_dev_quirk
  scsi: ufs: Declare the quirks array const
  scsi: ufs: Invert the return value of ufshcd_is_hba_active()
  scsi: ufs: Remove unused constants and code
  scsi: ufs: Switch to aggregate initialization
  scsi: ufs: Make the config_scaling_param calls type safe
  scsi: ufs: Remove the driver version
  scsi: ufs: Rename sdev_ufs_device into ufs_device_wlun
  scsi: ufs: Use an SPDX license identifier in the Kconfig file
  scsi: ufs: Remove paths from source code comments
  scsi: ufs: Remove the TRUE and FALSE definitions
  scsi: ufs: Remove locking from around single register writes
  scsi: ufs: Introduce ufshcd_clkgate_delay_set()
  scsi: ufs: qcom: Fix ufs_qcom_resume()
  scsi: ufs: Remove unnecessary ufshcd-crypto.h include directives
  scsi: ufs: Fix kernel-doc syntax in ufshcd.h
  scsi: ufs: Minimize #include directives
  scsi: ufs: Split the ufshcd.h header file
  scsi: ufs: Move the struct ufs_ref_clk definition
  scsi: ufs: Move the ufs_is_valid_unit_desc_lun() definition
  scsi: ufs: Split the drivers/scsi/ufs directory

 MAINTAINERS                                   |   9 +-
 drivers/Kconfig                               |   2 +
 drivers/Makefile                              |   1 +
 drivers/scsi/Kconfig                          |   1 -
 drivers/scsi/Makefile                         |   1 -
 drivers/scsi/ufs/Kconfig                      | 211 ----------
 drivers/ufs/Kconfig                           |  30 ++
 drivers/ufs/Makefile                          |   5 +
 drivers/ufs/core/Kconfig                      |  60 +++
 drivers/ufs/core/Makefile                     |  10 +
 drivers/{scsi/ufs => ufs/core}/ufs-debugfs.c  |   3 +-
 drivers/{scsi/ufs => ufs/core}/ufs-debugfs.h  |   0
 .../ufs => ufs/core}/ufs-fault-injection.c    |   0
 .../ufs => ufs/core}/ufs-fault-injection.h    |   0
 drivers/{scsi/ufs => ufs/core}/ufs-hwmon.c    |   3 +-
 drivers/{scsi/ufs => ufs/core}/ufs-sysfs.c    |   3 +-
 drivers/{scsi/ufs => ufs/core}/ufs-sysfs.h    |   3 +-
 drivers/{scsi/ufs => ufs/core}/ufs_bsg.c      |   6 +
 drivers/{scsi/ufs => ufs/core}/ufs_bsg.h      |   7 +-
 .../{scsi/ufs => ufs/core}/ufshcd-crypto.c    |   2 +-
 .../{scsi/ufs => ufs/core}/ufshcd-crypto.h    |   7 +-
 drivers/ufs/core/ufshcd-priv.h                | 298 ++++++++++++++
 drivers/{scsi/ufs => ufs/core}/ufshcd.c       | 236 +++++------
 drivers/{scsi/ufs => ufs/core}/ufshpb.c       |  16 +-
 drivers/{scsi/ufs => ufs/core}/ufshpb.h       |   0
 drivers/ufs/host/Kconfig                      | 114 ++++++
 drivers/{scsi/ufs => ufs/host}/Makefile       |  12 -
 drivers/{scsi/ufs => ufs/host}/cdns-pltfrm.c  |   2 +-
 .../{scsi/ufs => ufs/host}/tc-dwc-g210-pci.c  |   3 +-
 .../ufs => ufs/host}/tc-dwc-g210-pltfrm.c     |   1 +
 drivers/{scsi/ufs => ufs/host}/tc-dwc-g210.c  |   6 +-
 drivers/{scsi/ufs => ufs/host}/tc-dwc-g210.h  |   2 +
 drivers/{scsi/ufs => ufs/host}/ti-j721e-ufs.c |   0
 drivers/{scsi/ufs => ufs/host}/ufs-exynos.c   |  11 +-
 drivers/{scsi/ufs => ufs/host}/ufs-exynos.h   |   8 +-
 drivers/{scsi/ufs => ufs/host}/ufs-hisi.c     |  10 +-
 drivers/{scsi/ufs => ufs/host}/ufs-hisi.h     |   0
 .../ufs => ufs/host}/ufs-mediatek-trace.h     |   2 +-
 drivers/{scsi/ufs => ufs/host}/ufs-mediatek.c |  37 +-
 drivers/{scsi/ufs => ufs/host}/ufs-mediatek.h |   0
 drivers/{scsi/ufs => ufs/host}/ufs-qcom-ice.c |   2 +-
 drivers/{scsi/ufs => ufs/host}/ufs-qcom.c     |  36 +-
 drivers/{scsi/ufs => ufs/host}/ufs-qcom.h     |   6 +-
 drivers/{scsi/ufs => ufs/host}/ufshcd-dwc.c   |   6 +-
 drivers/{scsi/ufs => ufs/host}/ufshcd-dwc.h   |   2 +
 drivers/{scsi/ufs => ufs/host}/ufshcd-pci.c   |   6 +-
 .../{scsi/ufs => ufs/host}/ufshcd-pltfrm.c    |  32 +-
 .../{scsi/ufs => ufs/host}/ufshcd-pltfrm.h    |   2 +-
 drivers/{scsi/ufs => ufs/host}/ufshci-dwc.h   |   0
 {drivers/scsi/ufs => include/scsi}/ufs.h      |  35 --
 .../scsi/ufs => include/scsi}/ufs_quirks.h    |  15 +-
 {drivers/scsi/ufs => include/scsi}/ufshcd.h   | 376 ++++--------------
 {drivers/scsi/ufs => include/scsi}/ufshci.h   |   2 +
 {drivers/scsi/ufs => include/scsi}/unipro.h   |  18 +-
 54 files changed, 840 insertions(+), 820 deletions(-)
 delete mode 100644 drivers/scsi/ufs/Kconfig
 create mode 100644 drivers/ufs/Kconfig
 create mode 100644 drivers/ufs/Makefile
 create mode 100644 drivers/ufs/core/Kconfig
 create mode 100644 drivers/ufs/core/Makefile
 rename drivers/{scsi/ufs => ufs/core}/ufs-debugfs.c (99%)
 rename drivers/{scsi/ufs => ufs/core}/ufs-debugfs.h (100%)
 rename drivers/{scsi/ufs => ufs/core}/ufs-fault-injection.c (100%)
 rename drivers/{scsi/ufs => ufs/core}/ufs-fault-injection.h (100%)
 rename drivers/{scsi/ufs => ufs/core}/ufs-hwmon.c (98%)
 rename drivers/{scsi/ufs => ufs/core}/ufs-sysfs.c (99%)
 rename drivers/{scsi/ufs => ufs/core}/ufs-sysfs.h (95%)
 rename drivers/{scsi/ufs => ufs/core}/ufs_bsg.c (97%)
 rename drivers/{scsi/ufs => ufs/core}/ufs_bsg.h (77%)
 rename drivers/{scsi/ufs => ufs/core}/ufshcd-crypto.c (99%)
 rename drivers/{scsi/ufs => ufs/core}/ufshcd-crypto.h (94%)
 create mode 100644 drivers/ufs/core/ufshcd-priv.h
 rename drivers/{scsi/ufs => ufs/core}/ufshcd.c (98%)
 rename drivers/{scsi/ufs => ufs/core}/ufshpb.c (99%)
 rename drivers/{scsi/ufs => ufs/core}/ufshpb.h (100%)
 create mode 100644 drivers/ufs/host/Kconfig
 rename drivers/{scsi/ufs => ufs/host}/Makefile (56%)
 rename drivers/{scsi/ufs => ufs/host}/cdns-pltfrm.c (99%)
 rename drivers/{scsi/ufs => ufs/host}/tc-dwc-g210-pci.c (98%)
 rename drivers/{scsi/ufs => ufs/host}/tc-dwc-g210-pltfrm.c (98%)
 rename drivers/{scsi/ufs => ufs/host}/tc-dwc-g210.c (99%)
 rename drivers/{scsi/ufs => ufs/host}/tc-dwc-g210.h (95%)
 rename drivers/{scsi/ufs => ufs/host}/ti-j721e-ufs.c (100%)
 rename drivers/{scsi/ufs => ufs/host}/ufs-exynos.c (99%)
 rename drivers/{scsi/ufs => ufs/host}/ufs-exynos.h (97%)
 rename drivers/{scsi/ufs => ufs/host}/ufs-hisi.c (99%)
 rename drivers/{scsi/ufs => ufs/host}/ufs-hisi.h (100%)
 rename drivers/{scsi/ufs => ufs/host}/ufs-mediatek-trace.h (93%)
 rename drivers/{scsi/ufs => ufs/host}/ufs-mediatek.c (97%)
 rename drivers/{scsi/ufs => ufs/host}/ufs-mediatek.h (100%)
 rename drivers/{scsi/ufs => ufs/host}/ufs-qcom-ice.c (99%)
 rename drivers/{scsi/ufs => ufs/host}/ufs-qcom.c (98%)
 rename drivers/{scsi/ufs => ufs/host}/ufs-qcom.h (98%)
 rename drivers/{scsi/ufs => ufs/host}/ufshcd-dwc.c (98%)
 rename drivers/{scsi/ufs => ufs/host}/ufshcd-dwc.h (95%)
 rename drivers/{scsi/ufs => ufs/host}/ufshcd-pci.c (99%)
 rename drivers/{scsi/ufs => ufs/host}/ufshcd-pltfrm.c (94%)
 rename drivers/{scsi/ufs => ufs/host}/ufshcd-pltfrm.h (98%)
 rename drivers/{scsi/ufs => ufs/host}/ufshci-dwc.h (100%)
 rename {drivers/scsi/ufs => include/scsi}/ufs.h (93%)
 rename {drivers/scsi/ufs => include/scsi}/ufs_quirks.h (94%)
 rename {drivers/scsi/ufs => include/scsi}/ufshcd.h (81%)
 rename {drivers/scsi/ufs => include/scsi}/ufshci.h (99%)
 rename {drivers/scsi/ufs => include/scsi}/unipro.h (98%)

[PATCH v2 01/29] scsi: ufs: Fix a spelling error in a source code comment

[Bart Van Assche]

Change one occurrence of "adpater" into "adapter".

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 drivers/scsi/ufs/unipro.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/ufs/unipro.h b/drivers/scsi/ufs/unipro.h
index 8e9e486a4f7b..705a6465ba5c 100644
--- a/drivers/scsi/ufs/unipro.h
+++ b/drivers/scsi/ufs/unipro.h
@@ -103,7 +103,7 @@
 #define UNIPRO_CB_OFFSET(x)			(0x8000 | x)
 
 /*
- * PHY Adpater attributes
+ * PHY Adapter attributes
  */
 #define PA_ACTIVETXDATALANES	0x1560
 #define PA_ACTIVERXDATALANES	0x1580

RE: [PATCH v2 01/29] scsi: ufs: Fix a spelling error in a source code comment

[Avri Altman]

 
> Change one occurrence of "adpater" into "adapter".
> 
> Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Avri Altman <avri.altman@wdc.com>

[PATCH v2 02/29] scsi: ufs: Declare ufshcd_wait_for_register() static

[Bart Van Assche]

Declare this function static since it is only used inside the ufshcd.c
source file.

Reviewed-by: Avri Altman <avri.altman@wdc.com>
Reviewed-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 drivers/scsi/ufs/ufshcd.c | 2 +-
 drivers/scsi/ufs/ufshcd.h | 3 ---
 2 files changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 3f9caafa91bf..dbf50b50870b 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -639,7 +639,7 @@ EXPORT_SYMBOL_GPL(ufshcd_delay_us);
  * Return:
  * -ETIMEDOUT on error, zero on success.
  */
-int ufshcd_wait_for_register(struct ufs_hba *hba, u32 reg, u32 mask,
+static int ufshcd_wait_for_register(struct ufs_hba *hba, u32 reg, u32 mask,
 				u32 val, unsigned long interval_us,
 				unsigned long timeout_ms)
 {
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index 88c20f3608c2..949427714d0e 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -1030,9 +1030,6 @@ void ufshcd_remove(struct ufs_hba *);
 int ufshcd_uic_hibern8_enter(struct ufs_hba *hba);
 int ufshcd_uic_hibern8_exit(struct ufs_hba *hba);
 void ufshcd_delay_us(unsigned long us, unsigned long tolerance);
-int ufshcd_wait_for_register(struct ufs_hba *hba, u32 reg, u32 mask,
-				u32 val, unsigned long interval_us,
-				unsigned long timeout_ms);
 void ufshcd_parse_dev_ref_clk_freq(struct ufs_hba *hba, struct clk *refclk);
 void ufshcd_update_evt_hist(struct ufs_hba *hba, u32 id, u32 val);
 void ufshcd_hba_stop(struct ufs_hba *hba);

[PATCH v2 03/29] scsi: ufs: Remove superfluous boolean conversions

[Bart Van Assche]

Remove "? true : false" if the preceding expression yields a boolean or if
the result of the expression is assigned to a boolean since in these two
cases the "? true : false" part is superfluous.

Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 drivers/scsi/ufs/ufs-qcom.c | 3 +--
 drivers/scsi/ufs/ufshcd.c   | 9 ++++-----
 drivers/scsi/ufs/ufshcd.h   | 2 +-
 3 files changed, 6 insertions(+), 8 deletions(-)

diff --git a/drivers/scsi/ufs/ufs-qcom.c b/drivers/scsi/ufs/ufs-qcom.c
index 0d2e950d0865..808b677f6083 100644
--- a/drivers/scsi/ufs/ufs-qcom.c
+++ b/drivers/scsi/ufs/ufs-qcom.c
@@ -299,8 +299,7 @@ static int ufs_qcom_power_up_sequence(struct ufs_hba *hba)
 	struct ufs_qcom_host *host = ufshcd_get_variant(hba);
 	struct phy *phy = host->generic_phy;
 	int ret = 0;
-	bool is_rate_B = (UFS_QCOM_LIMIT_HS_RATE == PA_HS_MODE_B)
-							? true : false;
+	bool is_rate_B = UFS_QCOM_LIMIT_HS_RATE == PA_HS_MODE_B;
 
 	/* Reset UFS Host Controller and PHY */
 	ret = ufs_qcom_host_reset(hba);
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index dbf50b50870b..983fac14b7cd 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -712,8 +712,7 @@ static inline u32 ufshcd_get_ufs_version(struct ufs_hba *hba)
  */
 static inline bool ufshcd_is_device_present(struct ufs_hba *hba)
 {
-	return (ufshcd_readl(hba, REG_CONTROLLER_STATUS) &
-						DEVICE_PRESENT) ? true : false;
+	return ufshcd_readl(hba, REG_CONTROLLER_STATUS) & DEVICE_PRESENT;
 }
 
 /**
@@ -840,7 +839,7 @@ ufshcd_get_rsp_upiu_data_seg_len(struct utp_upiu_rsp *ucd_rsp_ptr)
 static inline bool ufshcd_is_exception_event(struct utp_upiu_rsp *ucd_rsp_ptr)
 {
 	return be32_to_cpu(ucd_rsp_ptr->header.dword_2) &
-			MASK_RSP_EXCEPTION_EVENT ? true : false;
+			MASK_RSP_EXCEPTION_EVENT;
 }
 
 /**
@@ -1350,7 +1349,7 @@ static int ufshcd_devfreq_target(struct device *dev,
 	}
 
 	/* Decide based on the rounded-off frequency and update */
-	scale_up = (*freq == clki->max_freq) ? true : false;
+	scale_up = *freq == clki->max_freq;
 	if (!scale_up)
 		*freq = clki->min_freq;
 	/* Update the frequency */
@@ -2800,7 +2799,7 @@ static int ufshcd_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
 	lrbp->sense_buffer = cmd->sense_buffer;
 	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->intr_cmd = !ufshcd_is_intr_aggr_allowed(hba);
 
 	ufshcd_prepare_lrbp_crypto(scsi_cmd_to_rq(cmd), lrbp);
 
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index 949427714d0e..b2740b51a546 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -985,7 +985,7 @@ static inline bool ufshcd_is_auto_hibern8_supported(struct ufs_hba *hba)
 
 static inline bool ufshcd_is_auto_hibern8_enabled(struct ufs_hba *hba)
 {
-	return FIELD_GET(UFSHCI_AHIBERN8_TIMER_MASK, hba->ahit) ? true : false;
+	return FIELD_GET(UFSHCI_AHIBERN8_TIMER_MASK, hba->ahit);
 }
 
 static inline bool ufshcd_is_wb_allowed(struct ufs_hba *hba)

[PATCH v2 04/29] scsi: ufs: Simplify statements that return a boolean

[Bart Van Assche]

Convert "if (expr) return true; else return false;" into "return expr;"
if either 'expr' is a boolean expression or the return type of the
function is 'bool'.

Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 drivers/scsi/ufs/ufs-qcom.h |  5 +----
 drivers/scsi/ufs/ufshcd.c   | 22 +++++-----------------
 drivers/scsi/ufs/ufshpb.c   |  8 ++------
 3 files changed, 8 insertions(+), 27 deletions(-)

diff --git a/drivers/scsi/ufs/ufs-qcom.h b/drivers/scsi/ufs/ufs-qcom.h
index 8208e3a3ef59..51570224a6e2 100644
--- a/drivers/scsi/ufs/ufs-qcom.h
+++ b/drivers/scsi/ufs/ufs-qcom.h
@@ -239,10 +239,7 @@ int ufs_qcom_testbus_config(struct ufs_qcom_host *host);
 
 static inline bool ufs_qcom_cap_qunipro(struct ufs_qcom_host *host)
 {
-	if (host->caps & UFS_QCOM_CAP_QUNIPRO)
-		return true;
-	else
-		return false;
+	return host->caps & UFS_QCOM_CAP_QUNIPRO;
 }
 
 /* ufs-qcom-ice.c */
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 983fac14b7cd..c60519372b3b 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -939,10 +939,7 @@ static bool ufshcd_is_unipro_pa_params_tuning_req(struct ufs_hba *hba)
 	 * logic simple, we will only do manual tuning if local unipro version
 	 * doesn't support ver1.6 or later.
 	 */
-	if (ufshcd_get_local_unipro_ver(hba) < UFS_UNIPRO_VER_1_6)
-		return true;
-	else
-		return false;
+	return ufshcd_get_local_unipro_ver(hba) < UFS_UNIPRO_VER_1_6;
 }
 
 /**
@@ -2216,10 +2213,7 @@ static inline int ufshcd_hba_capabilities(struct ufs_hba *hba)
  */
 static inline bool ufshcd_ready_for_uic_cmd(struct ufs_hba *hba)
 {
-	if (ufshcd_readl(hba, REG_CONTROLLER_STATUS) & UIC_COMMAND_READY)
-		return true;
-	else
-		return false;
+	return ufshcd_readl(hba, REG_CONTROLLER_STATUS) & UIC_COMMAND_READY;
 }
 
 /**
@@ -5781,10 +5775,7 @@ static bool ufshcd_wb_presrv_usrspc_keep_vcc_on(struct ufs_hba *hba,
 		return false;
 	}
 	/* Let it continue to flush when available buffer exceeds threshold */
-	if (avail_buf < hba->vps->wb_flush_threshold)
-		return true;
-
-	return false;
+	return avail_buf < hba->vps->wb_flush_threshold;
 }
 
 static void ufshcd_wb_force_disable(struct ufs_hba *hba)
@@ -5863,11 +5854,8 @@ static bool ufshcd_wb_need_flush(struct ufs_hba *hba)
 		return false;
 	}
 
-	if (!hba->dev_info.b_presrv_uspc_en) {
-		if (avail_buf <= UFS_WB_BUF_REMAIN_PERCENT(10))
-			return true;
-		return false;
-	}
+	if (!hba->dev_info.b_presrv_uspc_en)
+		return avail_buf <= UFS_WB_BUF_REMAIN_PERCENT(10);
 
 	return ufshcd_wb_presrv_usrspc_keep_vcc_on(hba, avail_buf);
 }
diff --git a/drivers/scsi/ufs/ufshpb.c b/drivers/scsi/ufs/ufshpb.c
index b2bec19022cd..ebd8fc8fc109 100644
--- a/drivers/scsi/ufs/ufshpb.c
+++ b/drivers/scsi/ufs/ufshpb.c
@@ -90,12 +90,8 @@ static bool ufshpb_is_general_lun(int lun)
 
 static bool ufshpb_is_pinned_region(struct ufshpb_lu *hpb, int rgn_idx)
 {
-	if (hpb->lu_pinned_end != PINNED_NOT_SET &&
-	    rgn_idx >= hpb->lu_pinned_start &&
-	    rgn_idx <= hpb->lu_pinned_end)
-		return true;
-
-	return false;
+	return hpb->lu_pinned_end != PINNED_NOT_SET &&
+	       rgn_idx >= hpb->lu_pinned_start && rgn_idx <= hpb->lu_pinned_end;
 }
 
 static void ufshpb_kick_map_work(struct ufshpb_lu *hpb)

[PATCH v2 05/29] scsi: ufs: Remove ufshcd_lrb.sense_bufflen

[Bart Van Assche]

ufshcd_lrb.sense_bufflen is set but never read. Hence remove this struct
member.

Reviewed-by: Avri Altman <avri.altman@wdc.com>
Reviewed-by: Keoseong Park <keosung.park@samsung.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 drivers/scsi/ufs/ufshcd.c | 3 ---
 drivers/scsi/ufs/ufshcd.h | 2 --
 2 files changed, 5 deletions(-)

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index c60519372b3b..e52e86b0b7a3 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -2789,7 +2789,6 @@ static int ufshcd_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
 	lrbp = &hba->lrb[tag];
 	WARN_ON(lrbp->cmd);
 	lrbp->cmd = cmd;
-	lrbp->sense_bufflen = UFS_SENSE_SIZE;
 	lrbp->sense_buffer = cmd->sense_buffer;
 	lrbp->task_tag = tag;
 	lrbp->lun = ufshcd_scsi_to_upiu_lun(cmd->device->lun);
@@ -2830,7 +2829,6 @@ static int ufshcd_compose_dev_cmd(struct ufs_hba *hba,
 		struct ufshcd_lrb *lrbp, enum dev_cmd_type cmd_type, int tag)
 {
 	lrbp->cmd = NULL;
-	lrbp->sense_bufflen = 0;
 	lrbp->sense_buffer = NULL;
 	lrbp->task_tag = tag;
 	lrbp->lun = 0; /* device management cmd is not specific to any LUN */
@@ -6802,7 +6800,6 @@ static int ufshcd_issue_devman_upiu_cmd(struct ufs_hba *hba,
 	lrbp = &hba->lrb[tag];
 	WARN_ON(lrbp->cmd);
 	lrbp->cmd = NULL;
-	lrbp->sense_bufflen = 0;
 	lrbp->sense_buffer = NULL;
 	lrbp->task_tag = tag;
 	lrbp->lun = 0;
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index b2740b51a546..b6162b208d99 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -182,7 +182,6 @@ struct ufs_pm_lvl_states {
  * @ucd_req_dma_addr: UPIU request dma address for debug
  * @cmd: pointer to SCSI command
  * @sense_buffer: pointer to sense buffer address of the SCSI command
- * @sense_bufflen: Length of the sense buffer
  * @scsi_status: SCSI status of the command
  * @command_type: SCSI, UFS, Query.
  * @task_tag: Task tag of the command
@@ -207,7 +206,6 @@ struct ufshcd_lrb {
 
 	struct scsi_cmnd *cmd;
 	u8 *sense_buffer;
-	unsigned int sense_bufflen;
 	int scsi_status;
 
 	int command_type;

[PATCH v2 06/29] scsi: ufs: Remove ufshcd_lrb.sense_buffer

[Bart Van Assche]

ufshcd_lrb.sense_buffer is NULL if ufshcd_lrb.cmd is NULL and
ufshcd_lrb.sense_buffer points at cmd->sense_buffer if ufshcd_lrb.cmd
is set. In other words, the ufshcd_lrb.sense_buffer member is identical
to cmd->sense_buffer. Hence this patch that removes the
ufshcd_lrb.sense_buffer structure member.

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 drivers/scsi/ufs/ufshcd.c | 9 ++++-----
 drivers/scsi/ufs/ufshcd.h | 2 --
 2 files changed, 4 insertions(+), 7 deletions(-)

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index e52e86b0b7a3..d4ef31e1a409 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -2127,15 +2127,17 @@ void ufshcd_send_command(struct ufs_hba *hba, unsigned int task_tag)
  */
 static inline void ufshcd_copy_sense_data(struct ufshcd_lrb *lrbp)
 {
+	u8 *const sense_buffer = lrbp->cmd->sense_buffer;
 	int len;
-	if (lrbp->sense_buffer &&
+
+	if (sense_buffer &&
 	    ufshcd_get_rsp_upiu_data_seg_len(lrbp->ucd_rsp_ptr)) {
 		int len_to_copy;
 
 		len = be16_to_cpu(lrbp->ucd_rsp_ptr->sr.sense_data_len);
 		len_to_copy = min_t(int, UFS_SENSE_SIZE, len);
 
-		memcpy(lrbp->sense_buffer, lrbp->ucd_rsp_ptr->sr.sense_data,
+		memcpy(sense_buffer, lrbp->ucd_rsp_ptr->sr.sense_data,
 		       len_to_copy);
 	}
 }
@@ -2789,7 +2791,6 @@ static int ufshcd_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
 	lrbp = &hba->lrb[tag];
 	WARN_ON(lrbp->cmd);
 	lrbp->cmd = cmd;
-	lrbp->sense_buffer = cmd->sense_buffer;
 	lrbp->task_tag = tag;
 	lrbp->lun = ufshcd_scsi_to_upiu_lun(cmd->device->lun);
 	lrbp->intr_cmd = !ufshcd_is_intr_aggr_allowed(hba);
@@ -2829,7 +2830,6 @@ static int ufshcd_compose_dev_cmd(struct ufs_hba *hba,
 		struct ufshcd_lrb *lrbp, enum dev_cmd_type cmd_type, int tag)
 {
 	lrbp->cmd = NULL;
-	lrbp->sense_buffer = NULL;
 	lrbp->task_tag = tag;
 	lrbp->lun = 0; /* device management cmd is not specific to any LUN */
 	lrbp->intr_cmd = true; /* No interrupt aggregation */
@@ -6800,7 +6800,6 @@ static int ufshcd_issue_devman_upiu_cmd(struct ufs_hba *hba,
 	lrbp = &hba->lrb[tag];
 	WARN_ON(lrbp->cmd);
 	lrbp->cmd = NULL;
-	lrbp->sense_buffer = NULL;
 	lrbp->task_tag = tag;
 	lrbp->lun = 0;
 	lrbp->intr_cmd = true;
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index b6162b208d99..b9f17219ca18 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -181,7 +181,6 @@ struct ufs_pm_lvl_states {
  * @ucd_rsp_dma_addr: UPIU response dma address for debug
  * @ucd_req_dma_addr: UPIU request dma address for debug
  * @cmd: pointer to SCSI command
- * @sense_buffer: pointer to sense buffer address of the SCSI command
  * @scsi_status: SCSI status of the command
  * @command_type: SCSI, UFS, Query.
  * @task_tag: Task tag of the command
@@ -205,7 +204,6 @@ struct ufshcd_lrb {
 	dma_addr_t ucd_prdt_dma_addr;
 
 	struct scsi_cmnd *cmd;
-	u8 *sense_buffer;
 	int scsi_status;
 
 	int command_type;

RE: [PATCH v2 06/29] scsi: ufs: Remove ufshcd_lrb.sense_buffer

[Avri Altman]

> 
> ufshcd_lrb.sense_buffer is NULL if ufshcd_lrb.cmd is NULL and
> ufshcd_lrb.sense_buffer points at cmd->sense_buffer if ufshcd_lrb.cmd is
> set. In other words, the ufshcd_lrb.sense_buffer member is identical to
> cmd->sense_buffer. Hence this patch that removes the
> ufshcd_lrb.sense_buffer structure member.
> 
> Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Avri Altman <avri.altman@wdc.com>

[PATCH v2 07/29] scsi: ufs: Use get_unaligned_be16() instead of be16_to_cpup()

[Bart Van Assche]

Use get_unaligned_be16(...) instead of the equivalent but harder to read
be16_to_cpup((__be16 *)...).

Reviewed-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 drivers/scsi/ufs/ufshcd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index d4ef31e1a409..3ec26c9eb1be 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -7334,7 +7334,7 @@ static u32 ufshcd_get_max_icc_level(int sup_curr_uA, u32 start_scan, char *buff)
 	u16 unit;
 
 	for (i = start_scan; i >= 0; i--) {
-		data = be16_to_cpup((__be16 *)&buff[2 * i]);
+		data = get_unaligned_be16(&buff[2 * i]);
 		unit = (data & ATTR_ICC_LVL_UNIT_MASK) >>
 						ATTR_ICC_LVL_UNIT_OFFSET;
 		curr_uA = data & ATTR_ICC_LVL_VALUE_MASK;

Re: [PATCH v2 07/29] scsi: ufs: Use get_unaligned_be16() instead of be16_to_cpup()

[Eric Biggers]

On Tue, Apr 12, 2022 at 11:18:31AM -0700, Bart Van Assche wrote:
> Use get_unaligned_be16(...) instead of the equivalent but harder to read
> be16_to_cpup((__be16 *)...).
> 
> Reviewed-by: Bean Huo <beanhuo@micron.com>
> Signed-off-by: Bart Van Assche <bvanassche@acm.org>
> ---
>  drivers/scsi/ufs/ufshcd.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
> index d4ef31e1a409..3ec26c9eb1be 100644
> --- a/drivers/scsi/ufs/ufshcd.c
> +++ b/drivers/scsi/ufs/ufshcd.c
> @@ -7334,7 +7334,7 @@ static u32 ufshcd_get_max_icc_level(int sup_curr_uA, u32 start_scan, char *buff)
>  	u16 unit;
>  
>  	for (i = start_scan; i >= 0; i--) {
> -		data = be16_to_cpup((__be16 *)&buff[2 * i]);
> +		data = get_unaligned_be16(&buff[2 * i]);

This is not "equivalent".  get_unaligned_be16() works on unaligned values
whereas be16_to_cpup() assumes a naturally aligned value.  This patch might
still be the right thing to do, but the explanation is not correct.

- Eric

Re: [PATCH v2 07/29] scsi: ufs: Use get_unaligned_be16() instead of be16_to_cpup()

[Bart Van Assche]

On 4/12/22 14:26, Eric Biggers wrote:
> On Tue, Apr 12, 2022 at 11:18:31AM -0700, Bart Van Assche wrote:
>> Use get_unaligned_be16(...) instead of the equivalent but harder to read
>> be16_to_cpup((__be16 *)...).
>>
>> Reviewed-by: Bean Huo <beanhuo@micron.com>
>> Signed-off-by: Bart Van Assche <bvanassche@acm.org>
>> ---
>>   drivers/scsi/ufs/ufshcd.c | 2 +-
>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
>> index d4ef31e1a409..3ec26c9eb1be 100644
>> --- a/drivers/scsi/ufs/ufshcd.c
>> +++ b/drivers/scsi/ufs/ufshcd.c
>> @@ -7334,7 +7334,7 @@ static u32 ufshcd_get_max_icc_level(int sup_curr_uA, u32 start_scan, char *buff)
>>   	u16 unit;
>>   
>>   	for (i = start_scan; i >= 0; i--) {
>> -		data = be16_to_cpup((__be16 *)&buff[2 * i]);
>> +		data = get_unaligned_be16(&buff[2 * i]);
> 
> This is not "equivalent".  get_unaligned_be16() works on unaligned values
> whereas be16_to_cpup() assumes a naturally aligned value.  This patch might
> still be the right thing to do, but the explanation is not correct.

This is what I found in an English dictionary for the word equivalent:
"corresponding or virtually identical especially in effect or function". The
effect of this patch is that the same value will be stored in 'data' as without
this patch. Additionally, no runtime error will be generated with the patch
applied if the original code did not trigger a runtime exception. I think that
how I used the word "equivalent" is consistent with the explanation I found in
an English dictionary.

Thanks,

Bart.

[PATCH v2 08/29] scsi: ufs: Remove the UFS_FIX() and END_FIX() macros

[Bart Van Assche]

Since these two macros reduce code readability, remove these two macros.

Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 drivers/scsi/ufs/ufs-mediatek.c | 12 +++++----
 drivers/scsi/ufs/ufs_quirks.h   |  9 -------
 drivers/scsi/ufs/ufshcd.c       | 43 +++++++++++++++++++--------------
 3 files changed, 32 insertions(+), 32 deletions(-)

diff --git a/drivers/scsi/ufs/ufs-mediatek.c b/drivers/scsi/ufs/ufs-mediatek.c
index 86a938075f30..b275b440f027 100644
--- a/drivers/scsi/ufs/ufs-mediatek.c
+++ b/drivers/scsi/ufs/ufs-mediatek.c
@@ -45,11 +45,13 @@
 	ufs_mtk_smc(UFS_MTK_SIP_DEVICE_RESET, high, res)
 
 static struct ufs_dev_fix ufs_mtk_dev_fixups[] = {
-	UFS_FIX(UFS_VENDOR_MICRON, UFS_ANY_MODEL,
-		UFS_DEVICE_QUIRK_DELAY_AFTER_LPM),
-	UFS_FIX(UFS_VENDOR_SKHYNIX, "H9HQ21AFAMZDAR",
-		UFS_DEVICE_QUIRK_SUPPORT_EXTENDED_FEATURES),
-	END_FIX
+	{ .wmanufacturerid = UFS_VENDOR_MICRON,
+	  .model = UFS_ANY_MODEL,
+	  .quirk = UFS_DEVICE_QUIRK_DELAY_AFTER_LPM },
+	{ .wmanufacturerid = UFS_VENDOR_SKHYNIX,
+	  .model = "H9HQ21AFAMZDAR",
+	  .quirk = UFS_DEVICE_QUIRK_SUPPORT_EXTENDED_FEATURES },
+	{}
 };
 
 static const struct of_device_id ufs_mtk_of_match[] = {
diff --git a/drivers/scsi/ufs/ufs_quirks.h b/drivers/scsi/ufs/ufs_quirks.h
index 35ec9ea79869..e6c535c77527 100644
--- a/drivers/scsi/ufs/ufs_quirks.h
+++ b/drivers/scsi/ufs/ufs_quirks.h
@@ -29,15 +29,6 @@ struct ufs_dev_fix {
 	unsigned int quirk;
 };
 
-#define END_FIX { }
-
-/* add specific device quirk */
-#define UFS_FIX(_vendor, _model, _quirk) { \
-	.wmanufacturerid = (_vendor),\
-	.model = (_model),		   \
-	.quirk = (_quirk),		   \
-}
-
 /*
  * Some vendor's UFS device sends back to back NACs for the DL data frames
  * causing the host controller to raise the DFES error status. Sometimes
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 3ec26c9eb1be..5fa93be246a5 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -206,24 +206,31 @@ ufs_get_desired_pm_lvl_for_dev_link_state(enum ufs_dev_pwr_mode dev_state,
 
 static struct ufs_dev_fix ufs_fixups[] = {
 	/* UFS cards deviations table */
-	UFS_FIX(UFS_VENDOR_MICRON, UFS_ANY_MODEL,
-		UFS_DEVICE_QUIRK_DELAY_BEFORE_LPM |
-		UFS_DEVICE_QUIRK_SWAP_L2P_ENTRY_FOR_HPB_READ),
-	UFS_FIX(UFS_VENDOR_SAMSUNG, UFS_ANY_MODEL,
-		UFS_DEVICE_QUIRK_DELAY_BEFORE_LPM |
-		UFS_DEVICE_QUIRK_HOST_PA_TACTIVATE |
-		UFS_DEVICE_QUIRK_RECOVERY_FROM_DL_NAC_ERRORS),
-	UFS_FIX(UFS_VENDOR_SKHYNIX, UFS_ANY_MODEL,
-		UFS_DEVICE_QUIRK_HOST_PA_SAVECONFIGTIME),
-	UFS_FIX(UFS_VENDOR_SKHYNIX, "hB8aL1" /*H28U62301AMR*/,
-		UFS_DEVICE_QUIRK_HOST_VS_DEBUGSAVECONFIGTIME),
-	UFS_FIX(UFS_VENDOR_TOSHIBA, UFS_ANY_MODEL,
-		UFS_DEVICE_QUIRK_DELAY_BEFORE_LPM),
-	UFS_FIX(UFS_VENDOR_TOSHIBA, "THGLF2G9C8KBADG",
-		UFS_DEVICE_QUIRK_PA_TACTIVATE),
-	UFS_FIX(UFS_VENDOR_TOSHIBA, "THGLF2G9D8KBADG",
-		UFS_DEVICE_QUIRK_PA_TACTIVATE),
-	END_FIX
+	{ .wmanufacturerid = UFS_VENDOR_MICRON,
+	  .model = UFS_ANY_MODEL,
+	  .quirk = UFS_DEVICE_QUIRK_DELAY_BEFORE_LPM |
+		   UFS_DEVICE_QUIRK_SWAP_L2P_ENTRY_FOR_HPB_READ },
+	{ .wmanufacturerid = UFS_VENDOR_SAMSUNG,
+	  .model = UFS_ANY_MODEL,
+	  .quirk = UFS_DEVICE_QUIRK_DELAY_BEFORE_LPM |
+		   UFS_DEVICE_QUIRK_HOST_PA_TACTIVATE |
+		   UFS_DEVICE_QUIRK_RECOVERY_FROM_DL_NAC_ERRORS },
+	{ .wmanufacturerid = UFS_VENDOR_SKHYNIX,
+	  .model = UFS_ANY_MODEL,
+	  .quirk = UFS_DEVICE_QUIRK_HOST_PA_SAVECONFIGTIME },
+	{ .wmanufacturerid = UFS_VENDOR_SKHYNIX,
+	  .model = "hB8aL1" /*H28U62301AMR*/,
+	  .quirk = UFS_DEVICE_QUIRK_HOST_VS_DEBUGSAVECONFIGTIME },
+	{ .wmanufacturerid = UFS_VENDOR_TOSHIBA,
+	  .model = UFS_ANY_MODEL,
+	  .quirk = UFS_DEVICE_QUIRK_DELAY_BEFORE_LPM },
+	{ .wmanufacturerid = UFS_VENDOR_TOSHIBA,
+	  .model = "THGLF2G9C8KBADG",
+	  .quirk = UFS_DEVICE_QUIRK_PA_TACTIVATE },
+	{ .wmanufacturerid = UFS_VENDOR_TOSHIBA,
+	  .model = "THGLF2G9D8KBADG",
+	  .quirk = UFS_DEVICE_QUIRK_PA_TACTIVATE },
+	{}
 };
 
 static irqreturn_t ufshcd_tmc_handler(struct ufs_hba *hba);

[PATCH v2 09/29] scsi: ufs: Rename struct ufs_dev_fix into ufs_dev_quirk

[Bart Van Assche]

Since struct ufs_dev_fix contains quirk information, rename it into struct
ufs_dev_quirk.

Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 drivers/scsi/ufs/ufs-mediatek.c | 2 +-
 drivers/scsi/ufs/ufs_quirks.h   | 4 ++--
 drivers/scsi/ufs/ufshcd.c       | 6 +++---
 drivers/scsi/ufs/ufshcd.h       | 2 +-
 4 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/scsi/ufs/ufs-mediatek.c b/drivers/scsi/ufs/ufs-mediatek.c
index b275b440f027..217348dde6a6 100644
--- a/drivers/scsi/ufs/ufs-mediatek.c
+++ b/drivers/scsi/ufs/ufs-mediatek.c
@@ -44,7 +44,7 @@
 #define ufs_mtk_device_reset_ctrl(high, res) \
 	ufs_mtk_smc(UFS_MTK_SIP_DEVICE_RESET, high, res)
 
-static struct ufs_dev_fix ufs_mtk_dev_fixups[] = {
+static struct ufs_dev_quirk ufs_mtk_dev_fixups[] = {
 	{ .wmanufacturerid = UFS_VENDOR_MICRON,
 	  .model = UFS_ANY_MODEL,
 	  .quirk = UFS_DEVICE_QUIRK_DELAY_AFTER_LPM },
diff --git a/drivers/scsi/ufs/ufs_quirks.h b/drivers/scsi/ufs/ufs_quirks.h
index e6c535c77527..e38dec5f0351 100644
--- a/drivers/scsi/ufs/ufs_quirks.h
+++ b/drivers/scsi/ufs/ufs_quirks.h
@@ -19,11 +19,11 @@
 #define UFS_VENDOR_WDC         0x145
 
 /**
- * ufs_dev_fix - ufs device quirk info
+ * ufs_dev_quirk - ufs device quirk info
  * @card: ufs card details
  * @quirk: device quirk
  */
-struct ufs_dev_fix {
+struct ufs_dev_quirk {
 	u16 wmanufacturerid;
 	u8 *model;
 	unsigned int quirk;
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 5fa93be246a5..9df37c80308a 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -204,7 +204,7 @@ ufs_get_desired_pm_lvl_for_dev_link_state(enum ufs_dev_pwr_mode dev_state,
 	return UFS_PM_LVL_0;
 }
 
-static struct ufs_dev_fix ufs_fixups[] = {
+static struct ufs_dev_quirk ufs_fixups[] = {
 	/* UFS cards deviations table */
 	{ .wmanufacturerid = UFS_VENDOR_MICRON,
 	  .model = UFS_ANY_MODEL,
@@ -7624,9 +7624,9 @@ static void ufshcd_temp_notif_probe(struct ufs_hba *hba, u8 *desc_buf)
 	}
 }
 
-void ufshcd_fixup_dev_quirks(struct ufs_hba *hba, struct ufs_dev_fix *fixups)
+void ufshcd_fixup_dev_quirks(struct ufs_hba *hba, struct ufs_dev_quirk *fixups)
 {
-	struct ufs_dev_fix *f;
+	struct ufs_dev_quirk *f;
 	struct ufs_dev_info *dev_info = &hba->dev_info;
 
 	if (!fixups)
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index b9f17219ca18..3d18581afc2b 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -1180,7 +1180,7 @@ int ufshcd_query_flag(struct ufs_hba *hba, enum query_opcode opcode,
 
 void ufshcd_auto_hibern8_enable(struct ufs_hba *hba);
 void ufshcd_auto_hibern8_update(struct ufs_hba *hba, u32 ahit);
-void ufshcd_fixup_dev_quirks(struct ufs_hba *hba, struct ufs_dev_fix *fixups);
+void ufshcd_fixup_dev_quirks(struct ufs_hba *hba, struct ufs_dev_quirk *fixups);
 #define SD_ASCII_STD true
 #define SD_RAW false
 int ufshcd_read_string_desc(struct ufs_hba *hba, u8 desc_index,

[PATCH v2 10/29] scsi: ufs: Declare the quirks array const

[Bart Van Assche]

Declare the quirks array and also its 'model' member const to make it
explicit that these are not modified.

Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 drivers/scsi/ufs/ufs-mediatek.c | 2 +-
 drivers/scsi/ufs/ufs_quirks.h   | 2 +-
 drivers/scsi/ufs/ufshcd.c       | 7 ++++---
 drivers/scsi/ufs/ufshcd.h       | 3 ++-
 4 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/drivers/scsi/ufs/ufs-mediatek.c b/drivers/scsi/ufs/ufs-mediatek.c
index 217348dde6a6..9a4474210627 100644
--- a/drivers/scsi/ufs/ufs-mediatek.c
+++ b/drivers/scsi/ufs/ufs-mediatek.c
@@ -44,7 +44,7 @@
 #define ufs_mtk_device_reset_ctrl(high, res) \
 	ufs_mtk_smc(UFS_MTK_SIP_DEVICE_RESET, high, res)
 
-static struct ufs_dev_quirk ufs_mtk_dev_fixups[] = {
+static const struct ufs_dev_quirk ufs_mtk_dev_fixups[] = {
 	{ .wmanufacturerid = UFS_VENDOR_MICRON,
 	  .model = UFS_ANY_MODEL,
 	  .quirk = UFS_DEVICE_QUIRK_DELAY_AFTER_LPM },
diff --git a/drivers/scsi/ufs/ufs_quirks.h b/drivers/scsi/ufs/ufs_quirks.h
index e38dec5f0351..bcb4f004bed5 100644
--- a/drivers/scsi/ufs/ufs_quirks.h
+++ b/drivers/scsi/ufs/ufs_quirks.h
@@ -25,7 +25,7 @@
  */
 struct ufs_dev_quirk {
 	u16 wmanufacturerid;
-	u8 *model;
+	const u8 *model;
 	unsigned int quirk;
 };
 
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 9df37c80308a..a1ebfbb6f1b9 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -204,7 +204,7 @@ ufs_get_desired_pm_lvl_for_dev_link_state(enum ufs_dev_pwr_mode dev_state,
 	return UFS_PM_LVL_0;
 }
 
-static struct ufs_dev_quirk ufs_fixups[] = {
+static const struct ufs_dev_quirk ufs_fixups[] = {
 	/* UFS cards deviations table */
 	{ .wmanufacturerid = UFS_VENDOR_MICRON,
 	  .model = UFS_ANY_MODEL,
@@ -7624,9 +7624,10 @@ static void ufshcd_temp_notif_probe(struct ufs_hba *hba, u8 *desc_buf)
 	}
 }
 
-void ufshcd_fixup_dev_quirks(struct ufs_hba *hba, struct ufs_dev_quirk *fixups)
+void ufshcd_fixup_dev_quirks(struct ufs_hba *hba,
+			     const struct ufs_dev_quirk *fixups)
 {
-	struct ufs_dev_quirk *f;
+	const struct ufs_dev_quirk *f;
 	struct ufs_dev_info *dev_info = &hba->dev_info;
 
 	if (!fixups)
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index 3d18581afc2b..107d19e98d52 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -1180,7 +1180,8 @@ int ufshcd_query_flag(struct ufs_hba *hba, enum query_opcode opcode,
 
 void ufshcd_auto_hibern8_enable(struct ufs_hba *hba);
 void ufshcd_auto_hibern8_update(struct ufs_hba *hba, u32 ahit);
-void ufshcd_fixup_dev_quirks(struct ufs_hba *hba, struct ufs_dev_quirk *fixups);
+void ufshcd_fixup_dev_quirks(struct ufs_hba *hba,
+			     const struct ufs_dev_quirk *fixups);
 #define SD_ASCII_STD true
 #define SD_RAW false
 int ufshcd_read_string_desc(struct ufs_hba *hba, u8 desc_index,

[PATCH v2 11/29] scsi: ufs: Invert the return value of ufshcd_is_hba_active()

[Bart Van Assche]

It is confusing that ufshcd_is_hba_active() returns 'true' if the HBA is
not active. Clear up this confusion by inverting the return value of
ufshcd_is_hba_active(). This patch does not change any functionality.

Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 drivers/scsi/ufs/ufshcd.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index a1ebfbb6f1b9..eabc6b6156fd 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -917,12 +917,11 @@ static inline void ufshcd_hba_start(struct ufs_hba *hba)
  * ufshcd_is_hba_active - Get controller state
  * @hba: per adapter instance
  *
- * Returns false if controller is active, true otherwise
+ * Returns true if and only if the controller is active.
  */
 static inline bool ufshcd_is_hba_active(struct ufs_hba *hba)
 {
-	return (ufshcd_readl(hba, REG_CONTROLLER_ENABLE) & CONTROLLER_ENABLE)
-		? false : true;
+	return ufshcd_readl(hba, REG_CONTROLLER_ENABLE) & CONTROLLER_ENABLE;
 }
 
 u32 ufshcd_get_local_unipro_ver(struct ufs_hba *hba)
@@ -4552,7 +4551,7 @@ static int ufshcd_hba_execute_hce(struct ufs_hba *hba)
 	int retry_inner;
 
 start:
-	if (!ufshcd_is_hba_active(hba))
+	if (ufshcd_is_hba_active(hba))
 		/* change controller state to "reset state" */
 		ufshcd_hba_stop(hba);
 
@@ -4578,7 +4577,7 @@ static int ufshcd_hba_execute_hce(struct ufs_hba *hba)
 
 	/* wait for the host controller to complete initialization */
 	retry_inner = 50;
-	while (ufshcd_is_hba_active(hba)) {
+	while (!ufshcd_is_hba_active(hba)) {
 		if (retry_inner) {
 			retry_inner--;
 		} else {

[PATCH v2 12/29] scsi: ufs: Remove unused constants and code

[Bart Van Assche]

Commit 5b44a07b6bb2 ("scsi: ufs: Remove pre-defined initial voltage values
of device power") removed the code that uses the UFS_VREG_VCC* constants
and also the code that sets the min_uV and max_uV member variables. Hence
also remove these constants and that member variable.

Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 drivers/scsi/ufs/ufs.h    | 11 -----------
 drivers/scsi/ufs/ufshcd.c | 29 +++--------------------------
 2 files changed, 3 insertions(+), 37 deletions(-)

diff --git a/drivers/scsi/ufs/ufs.h b/drivers/scsi/ufs/ufs.h
index 4a00c24a3209..225b5b4a2a7e 100644
--- a/drivers/scsi/ufs/ufs.h
+++ b/drivers/scsi/ufs/ufs.h
@@ -562,15 +562,6 @@ struct ufs_query_res {
 	struct utp_upiu_query upiu_res;
 };
 
-#define UFS_VREG_VCC_MIN_UV	   2700000 /* uV */
-#define UFS_VREG_VCC_MAX_UV	   3600000 /* uV */
-#define UFS_VREG_VCC_1P8_MIN_UV    1700000 /* uV */
-#define UFS_VREG_VCC_1P8_MAX_UV    1950000 /* uV */
-#define UFS_VREG_VCCQ_MIN_UV	   1140000 /* uV */
-#define UFS_VREG_VCCQ_MAX_UV	   1260000 /* uV */
-#define UFS_VREG_VCCQ2_MIN_UV	   1700000 /* uV */
-#define UFS_VREG_VCCQ2_MAX_UV	   1950000 /* uV */
-
 /*
  * VCCQ & VCCQ2 current requirement when UFS device is in sleep state
  * and link is in Hibern8 state.
@@ -582,8 +573,6 @@ struct ufs_vreg {
 	const char *name;
 	bool always_on;
 	bool enabled;
-	int min_uV;
-	int max_uV;
 	int max_uA;
 };
 
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index eabc6b6156fd..69198e37c976 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -8309,33 +8309,10 @@ static inline int ufshcd_config_vreg_hpm(struct ufs_hba *hba,
 static int ufshcd_config_vreg(struct device *dev,
 		struct ufs_vreg *vreg, bool on)
 {
-	int ret = 0;
-	struct regulator *reg;
-	const char *name;
-	int min_uV, uA_load;
-
-	BUG_ON(!vreg);
-
-	reg = vreg->reg;
-	name = vreg->name;
-
-	if (regulator_count_voltages(reg) > 0) {
-		uA_load = on ? vreg->max_uA : 0;
-		ret = ufshcd_config_vreg_load(dev, vreg, uA_load);
-		if (ret)
-			goto out;
+	if (regulator_count_voltages(vreg->reg) <= 0)
+		return 0;
 
-		if (vreg->min_uV && vreg->max_uV) {
-			min_uV = on ? vreg->min_uV : 0;
-			ret = regulator_set_voltage(reg, min_uV, vreg->max_uV);
-			if (ret)
-				dev_err(dev,
-					"%s: %s set voltage failed, err=%d\n",
-					__func__, name, ret);
-		}
-	}
-out:
-	return ret;
+	return ufshcd_config_vreg_load(dev, vreg, on ? vreg->max_uA : 0);
 }
 
 static int ufshcd_enable_vreg(struct device *dev, struct ufs_vreg *vreg)

[PATCH v2 13/29] scsi: ufs: Switch to aggregate initialization

[Bart Van Assche]

Make it easier to verify for humans that ufshcd_init_pwr_dev_param()
initializes all structure members. This patch does not change any
functionality.

Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 drivers/scsi/ufs/ufshcd-pltfrm.c | 26 ++++++++++++++------------
 1 file changed, 14 insertions(+), 12 deletions(-)

diff --git a/drivers/scsi/ufs/ufshcd-pltfrm.c b/drivers/scsi/ufs/ufshcd-pltfrm.c
index cca4b2181a81..9923cbc70653 100644
--- a/drivers/scsi/ufs/ufshcd-pltfrm.c
+++ b/drivers/scsi/ufs/ufshcd-pltfrm.c
@@ -297,18 +297,20 @@ EXPORT_SYMBOL_GPL(ufshcd_get_pwr_dev_param);
 
 void ufshcd_init_pwr_dev_param(struct ufs_dev_params *dev_param)
 {
-	dev_param->tx_lanes = 2;
-	dev_param->rx_lanes = 2;
-	dev_param->hs_rx_gear = UFS_HS_G3;
-	dev_param->hs_tx_gear = UFS_HS_G3;
-	dev_param->pwm_rx_gear = UFS_PWM_G4;
-	dev_param->pwm_tx_gear = UFS_PWM_G4;
-	dev_param->rx_pwr_pwm = SLOW_MODE;
-	dev_param->tx_pwr_pwm = SLOW_MODE;
-	dev_param->rx_pwr_hs = FAST_MODE;
-	dev_param->tx_pwr_hs = FAST_MODE;
-	dev_param->hs_rate = PA_HS_MODE_B;
-	dev_param->desired_working_mode = UFS_HS_MODE;
+	*dev_param = (struct ufs_dev_params){
+		.tx_lanes = 2,
+		.rx_lanes = 2,
+		.hs_rx_gear = UFS_HS_G3,
+		.hs_tx_gear = UFS_HS_G3,
+		.pwm_rx_gear = UFS_PWM_G4,
+		.pwm_tx_gear = UFS_PWM_G4,
+		.rx_pwr_pwm = SLOW_MODE,
+		.tx_pwr_pwm = SLOW_MODE,
+		.rx_pwr_hs = FAST_MODE,
+		.tx_pwr_hs = FAST_MODE,
+		.hs_rate = PA_HS_MODE_B,
+		.desired_working_mode = UFS_HS_MODE,
+	};
 }
 EXPORT_SYMBOL_GPL(ufshcd_init_pwr_dev_param);
 

[PATCH v2 14/29] scsi: ufs: Make the config_scaling_param calls type safe

[Bart Van Assche]

Pass the actual type to config_scaling_param callback as the third
argment instead of a void pointer. Remove a superfluous NULL pointer
check from ufs_qcom_config_scaling_param().

Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 drivers/scsi/ufs/ufs-qcom.c | 14 ++++----------
 drivers/scsi/ufs/ufshcd.h   | 10 +++++-----
 2 files changed, 9 insertions(+), 15 deletions(-)

diff --git a/drivers/scsi/ufs/ufs-qcom.c b/drivers/scsi/ufs/ufs-qcom.c
index 808b677f6083..dded29722880 100644
--- a/drivers/scsi/ufs/ufs-qcom.c
+++ b/drivers/scsi/ufs/ufs-qcom.c
@@ -1463,23 +1463,17 @@ static int ufs_qcom_device_reset(struct ufs_hba *hba)
 
 #if IS_ENABLED(CONFIG_DEVFREQ_GOV_SIMPLE_ONDEMAND)
 static void ufs_qcom_config_scaling_param(struct ufs_hba *hba,
-					  struct devfreq_dev_profile *p,
-					  void *data)
+					struct devfreq_dev_profile *p,
+					struct devfreq_simple_ondemand_data *d)
 {
-	static struct devfreq_simple_ondemand_data *d;
-
-	if (!data)
-		return;
-
-	d = (struct devfreq_simple_ondemand_data *)data;
 	p->polling_ms = 60;
 	d->upthreshold = 70;
 	d->downdifferential = 5;
 }
 #else
 static void ufs_qcom_config_scaling_param(struct ufs_hba *hba,
-					  struct devfreq_dev_profile *p,
-					  void *data)
+		struct devfreq_dev_profile *p,
+		struct devfreq_simple_ondemand_data *data)
 {
 }
 #endif
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index 107d19e98d52..bb2624aabda2 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -348,8 +348,8 @@ struct ufs_hba_variant_ops {
 	int	(*phy_initialization)(struct ufs_hba *);
 	int	(*device_reset)(struct ufs_hba *hba);
 	void	(*config_scaling_param)(struct ufs_hba *hba,
-					struct devfreq_dev_profile *profile,
-					void *data);
+				struct devfreq_dev_profile *profile,
+				struct devfreq_simple_ondemand_data *data);
 	int	(*program_key)(struct ufs_hba *hba,
 			       const union ufs_crypto_cfg_entry *cfg, int slot);
 	void	(*event_notify)(struct ufs_hba *hba,
@@ -1360,11 +1360,11 @@ static inline int ufshcd_vops_device_reset(struct ufs_hba *hba)
 }
 
 static inline void ufshcd_vops_config_scaling_param(struct ufs_hba *hba,
-						    struct devfreq_dev_profile
-						    *profile, void *data)
+		struct devfreq_dev_profile *p,
+		struct devfreq_simple_ondemand_data *data)
 {
 	if (hba->vops && hba->vops->config_scaling_param)
-		hba->vops->config_scaling_param(hba, profile, data);
+		hba->vops->config_scaling_param(hba, p, data);
 }
 
 extern struct ufs_pm_lvl_states ufs_pm_lvl_states[];

[PATCH v2 15/29] scsi: ufs: Remove the driver version

[Bart Van Assche]

The current version number is 0.2. That driver version was assigned more
than nine years ago. A version number that is not updated while the driver
is updated is not useful. Hence remove the driver version number from the
UFS driver. See also commit e0eca63e3421 ("[SCSI] ufs: Separate PCI code
into glue driver").

Reviewed-by: Bean Huo <beanhuo@micron.com>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 drivers/scsi/ufs/cdns-pltfrm.c   | 1 -
 drivers/scsi/ufs/ufshcd-pci.c    | 1 -
 drivers/scsi/ufs/ufshcd-pltfrm.c | 1 -
 drivers/scsi/ufs/ufshcd.c        | 1 -
 drivers/scsi/ufs/ufshcd.h        | 1 -
 5 files changed, 5 deletions(-)

diff --git a/drivers/scsi/ufs/cdns-pltfrm.c b/drivers/scsi/ufs/cdns-pltfrm.c
index 7da8be2f35c4..e91cf9fd5a95 100644
--- a/drivers/scsi/ufs/cdns-pltfrm.c
+++ b/drivers/scsi/ufs/cdns-pltfrm.c
@@ -340,4 +340,3 @@ module_platform_driver(cdns_ufs_pltfrm_driver);
 MODULE_AUTHOR("Jan Kotas <jank@cadence.com>");
 MODULE_DESCRIPTION("Cadence UFS host controller platform driver");
 MODULE_LICENSE("GPL v2");
-MODULE_VERSION(UFSHCD_DRIVER_VERSION);
diff --git a/drivers/scsi/ufs/ufshcd-pci.c b/drivers/scsi/ufs/ufshcd-pci.c
index f76692053ca1..81aa14661072 100644
--- a/drivers/scsi/ufs/ufshcd-pci.c
+++ b/drivers/scsi/ufs/ufshcd-pci.c
@@ -601,4 +601,3 @@ MODULE_AUTHOR("Santosh Yaragnavi <santosh.sy@samsung.com>");
 MODULE_AUTHOR("Vinayak Holikatti <h.vinayak@samsung.com>");
 MODULE_DESCRIPTION("UFS host controller PCI glue driver");
 MODULE_LICENSE("GPL");
-MODULE_VERSION(UFSHCD_DRIVER_VERSION);
diff --git a/drivers/scsi/ufs/ufshcd-pltfrm.c b/drivers/scsi/ufs/ufshcd-pltfrm.c
index 9923cbc70653..fc5191101192 100644
--- a/drivers/scsi/ufs/ufshcd-pltfrm.c
+++ b/drivers/scsi/ufs/ufshcd-pltfrm.c
@@ -386,4 +386,3 @@ MODULE_AUTHOR("Santosh Yaragnavi <santosh.sy@samsung.com>");
 MODULE_AUTHOR("Vinayak Holikatti <h.vinayak@samsung.com>");
 MODULE_DESCRIPTION("UFS host controller Platform bus based glue driver");
 MODULE_LICENSE("GPL");
-MODULE_VERSION(UFSHCD_DRIVER_VERSION);
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 69198e37c976..912c3ecb8d7a 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -9923,4 +9923,3 @@ MODULE_AUTHOR("Santosh Yaragnavi <santosh.sy@samsung.com>");
 MODULE_AUTHOR("Vinayak Holikatti <h.vinayak@samsung.com>");
 MODULE_DESCRIPTION("Generic UFS host controller driver Core");
 MODULE_LICENSE("GPL");
-MODULE_VERSION(UFSHCD_DRIVER_VERSION);
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index bb2624aabda2..49edbdb5ffd6 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -49,7 +49,6 @@
 #include "ufshci.h"
 
 #define UFSHCD "ufshcd"
-#define UFSHCD_DRIVER_VERSION "0.2"
 
 struct ufs_hba;
 

[PATCH v2 16/29] scsi: ufs: Rename sdev_ufs_device into ufs_device_wlun

[Bart Van Assche]

The new name reflects the role of this member variable better: a WLUN
through which the power mode of the UFS device is controlled.

Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 drivers/scsi/ufs/ufshcd.c | 50 +++++++++++++++++++--------------------
 drivers/scsi/ufs/ufshcd.h | 17 ++++++-------
 2 files changed, 32 insertions(+), 35 deletions(-)

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 912c3ecb8d7a..e0535e4d8669 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -540,7 +540,7 @@ static void ufshcd_print_tmrs(struct ufs_hba *hba, unsigned long bitmap)
 
 static void ufshcd_print_host_state(struct ufs_hba *hba)
 {
-	struct scsi_device *sdev_ufs = hba->sdev_ufs_device;
+	struct scsi_device *sdev_ufs = hba->ufs_device_wlun;
 
 	dev_err(hba->dev, "UFS Host state=%d\n", hba->ufshcd_state);
 	dev_err(hba->dev, "outstanding reqs=0x%lx tasks=0x%lx\n",
@@ -4195,7 +4195,7 @@ void ufshcd_auto_hibern8_update(struct ufs_hba *hba, u32 ahit)
 	spin_unlock_irqrestore(hba->host->host_lock, flags);
 
 	if (update &&
-	    !pm_runtime_suspended(&hba->sdev_ufs_device->sdev_gendev)) {
+	    !pm_runtime_suspended(&hba->ufs_device_wlun->sdev_gendev)) {
 		ufshcd_rpm_get_sync(hba);
 		ufshcd_hold(hba, false);
 		ufshcd_auto_hibern8_enable(hba);
@@ -4911,13 +4911,13 @@ static void ufshcd_setup_links(struct ufs_hba *hba, struct scsi_device *sdev)
 	 * Device wlun is the supplier & rest of the luns are consumers.
 	 * This ensures that device wlun suspends after all other luns.
 	 */
-	if (hba->sdev_ufs_device) {
+	if (hba->ufs_device_wlun) {
 		link = device_link_add(&sdev->sdev_gendev,
-				       &hba->sdev_ufs_device->sdev_gendev,
+				       &hba->ufs_device_wlun->sdev_gendev,
 				       DL_FLAG_PM_RUNTIME | DL_FLAG_RPM_ACTIVE);
 		if (!link) {
 			dev_err(&sdev->sdev_gendev, "Failed establishing link - %s\n",
-				dev_name(&hba->sdev_ufs_device->sdev_gendev));
+				dev_name(&hba->ufs_device_wlun->sdev_gendev));
 			return;
 		}
 		hba->luns_avail--;
@@ -5053,15 +5053,15 @@ static void ufshcd_slave_destroy(struct scsi_device *sdev)
 	/* Drop the reference as it won't be needed anymore */
 	if (ufshcd_scsi_to_upiu_lun(sdev->lun) == UFS_UPIU_UFS_DEVICE_WLUN) {
 		spin_lock_irqsave(hba->host->host_lock, flags);
-		hba->sdev_ufs_device = NULL;
+		hba->ufs_device_wlun = NULL;
 		spin_unlock_irqrestore(hba->host->host_lock, flags);
-	} else if (hba->sdev_ufs_device) {
+	} else if (hba->ufs_device_wlun) {
 		struct device *supplier = NULL;
 
 		/* Ensure UFS Device WLUN exists and does not disappear */
 		spin_lock_irqsave(hba->host->host_lock, flags);
-		if (hba->sdev_ufs_device) {
-			supplier = &hba->sdev_ufs_device->sdev_gendev;
+		if (hba->ufs_device_wlun) {
+			supplier = &hba->ufs_device_wlun->sdev_gendev;
 			get_device(supplier);
 		}
 		spin_unlock_irqrestore(hba->host->host_lock, flags);
@@ -6037,7 +6037,7 @@ static void ufshcd_clk_scaling_suspend(struct ufs_hba *hba, bool suspend)
 static void ufshcd_err_handling_prepare(struct ufs_hba *hba)
 {
 	ufshcd_rpm_get_sync(hba);
-	if (pm_runtime_status_suspended(&hba->sdev_ufs_device->sdev_gendev) ||
+	if (pm_runtime_status_suspended(&hba->ufs_device_wlun->sdev_gendev) ||
 	    hba->is_sys_suspended) {
 		enum ufs_pm_op pm_op;
 
@@ -6082,7 +6082,7 @@ static void ufshcd_err_handling_unprepare(struct ufs_hba *hba)
 static inline bool ufshcd_err_handling_should_stop(struct ufs_hba *hba)
 {
 	return (!hba->is_powered || hba->shutting_down ||
-		!hba->sdev_ufs_device ||
+		!hba->ufs_device_wlun ||
 		hba->ufshcd_state == UFSHCD_STATE_ERROR ||
 		(!(hba->saved_err || hba->saved_uic_err || hba->force_reset ||
 		   ufshcd_is_link_broken(hba))));
@@ -6101,7 +6101,7 @@ static void ufshcd_recover_pm_error(struct ufs_hba *hba)
 	 * Set RPM status of wlun device to RPM_ACTIVE,
 	 * this also clears its runtime error.
 	 */
-	ret = pm_runtime_set_active(&hba->sdev_ufs_device->sdev_gendev);
+	ret = pm_runtime_set_active(&hba->ufs_device_wlun->sdev_gendev);
 
 	/* hba device might have a runtime error otherwise */
 	if (ret)
@@ -7495,20 +7495,20 @@ static int ufshcd_scsi_add_wlus(struct ufs_hba *hba)
 	int ret = 0;
 	struct scsi_device *sdev_boot, *sdev_rpmb;
 
-	hba->sdev_ufs_device = __scsi_add_device(hba->host, 0, 0,
+	hba->ufs_device_wlun = __scsi_add_device(hba->host, 0, 0,
 		ufshcd_upiu_wlun_to_scsi_wlun(UFS_UPIU_UFS_DEVICE_WLUN), NULL);
-	if (IS_ERR(hba->sdev_ufs_device)) {
-		ret = PTR_ERR(hba->sdev_ufs_device);
-		hba->sdev_ufs_device = NULL;
+	if (IS_ERR(hba->ufs_device_wlun)) {
+		ret = PTR_ERR(hba->ufs_device_wlun);
+		hba->ufs_device_wlun = NULL;
 		goto out;
 	}
-	scsi_device_put(hba->sdev_ufs_device);
+	scsi_device_put(hba->ufs_device_wlun);
 
 	sdev_rpmb = __scsi_add_device(hba->host, 0, 0,
 		ufshcd_upiu_wlun_to_scsi_wlun(UFS_UPIU_RPMB_WLUN), NULL);
 	if (IS_ERR(sdev_rpmb)) {
 		ret = PTR_ERR(sdev_rpmb);
-		goto remove_sdev_ufs_device;
+		goto remove_ufs_device_wlun;
 	}
 	ufshcd_blk_pm_runtime_init(sdev_rpmb);
 	scsi_device_put(sdev_rpmb);
@@ -7523,8 +7523,8 @@ static int ufshcd_scsi_add_wlus(struct ufs_hba *hba)
 	}
 	goto out;
 
-remove_sdev_ufs_device:
-	scsi_remove_device(hba->sdev_ufs_device);
+remove_ufs_device_wlun:
+	scsi_remove_device(hba->ufs_device_wlun);
 out:
 	return ret;
 }
@@ -8660,7 +8660,7 @@ static int ufshcd_set_dev_pwr_mode(struct ufs_hba *hba,
 	int ret, retries;
 
 	spin_lock_irqsave(hba->host->host_lock, flags);
-	sdp = hba->sdev_ufs_device;
+	sdp = hba->ufs_device_wlun;
 	if (sdp) {
 		ret = scsi_device_get(sdp);
 		if (!ret && !scsi_device_online(sdp)) {
@@ -9224,7 +9224,7 @@ static void ufshcd_wl_shutdown(struct device *dev)
 	ufshcd_rpm_get_sync(hba);
 	scsi_device_quiesce(sdev);
 	shost_for_each_device(sdev, hba->host) {
-		if (sdev == hba->sdev_ufs_device)
+		if (sdev == hba->ufs_device_wlun)
 			continue;
 		scsi_device_quiesce(sdev);
 	}
@@ -9445,7 +9445,7 @@ EXPORT_SYMBOL(ufshcd_shutdown);
  */
 void ufshcd_remove(struct ufs_hba *hba)
 {
-	if (hba->sdev_ufs_device)
+	if (hba->ufs_device_wlun)
 		ufshcd_rpm_get_sync(hba);
 	ufs_hwmon_remove(hba);
 	ufs_bsg_remove(hba);
@@ -9773,7 +9773,7 @@ EXPORT_SYMBOL_GPL(ufshcd_resume_complete);
 
 static bool ufshcd_rpm_ok_for_spm(struct ufs_hba *hba)
 {
-	struct device *dev = &hba->sdev_ufs_device->sdev_gendev;
+	struct device *dev = &hba->ufs_device_wlun->sdev_gendev;
 	enum ufs_dev_pwr_mode dev_pwr_mode;
 	enum uic_link_state link_state;
 	unsigned long flags;
@@ -9802,7 +9802,7 @@ int __ufshcd_suspend_prepare(struct device *dev, bool rpm_ok_for_spm)
 	 * if it's runtime suspended. But ufs doesn't follow that.
 	 * Refer ufshcd_resume_complete()
 	 */
-	if (hba->sdev_ufs_device) {
+	if (hba->ufs_device_wlun) {
 		/* Prevent runtime suspend */
 		ufshcd_rpm_get_noresume(hba);
 		/*
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index 49edbdb5ffd6..14414225faa1 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -732,6 +732,7 @@ struct ufs_hba_monitor {
  * @utmrdl_dma_addr: UTMRDL DMA address
  * @host: Scsi_Host instance of the driver
  * @dev: device handle
+ * @ufs_device_wlun: WLUN that controls the entire UFS device.
  * @lrb: local reference block
  * @outstanding_tasks: Bits representing outstanding task requests
  * @outstanding_lock: Protects @outstanding_reqs.
@@ -799,11 +800,7 @@ struct ufs_hba {
 
 	struct Scsi_Host *host;
 	struct device *dev;
-	/*
-	 * This field is to keep a reference to "scsi_device" corresponding to
-	 * "UFS device" W-LU.
-	 */
-	struct scsi_device *sdev_ufs_device;
+	struct scsi_device *ufs_device_wlun;
 
 #ifdef CONFIG_SCSI_UFS_HWMON
 	struct device *hwmon_device;
@@ -1407,27 +1404,27 @@ static inline int ufshcd_update_ee_usr_mask(struct ufs_hba *hba,
 
 static inline int ufshcd_rpm_get_sync(struct ufs_hba *hba)
 {
-	return pm_runtime_get_sync(&hba->sdev_ufs_device->sdev_gendev);
+	return pm_runtime_get_sync(&hba->ufs_device_wlun->sdev_gendev);
 }
 
 static inline int ufshcd_rpm_put_sync(struct ufs_hba *hba)
 {
-	return pm_runtime_put_sync(&hba->sdev_ufs_device->sdev_gendev);
+	return pm_runtime_put_sync(&hba->ufs_device_wlun->sdev_gendev);
 }
 
 static inline void ufshcd_rpm_get_noresume(struct ufs_hba *hba)
 {
-	pm_runtime_get_noresume(&hba->sdev_ufs_device->sdev_gendev);
+	pm_runtime_get_noresume(&hba->ufs_device_wlun->sdev_gendev);
 }
 
 static inline int ufshcd_rpm_resume(struct ufs_hba *hba)
 {
-	return pm_runtime_resume(&hba->sdev_ufs_device->sdev_gendev);
+	return pm_runtime_resume(&hba->ufs_device_wlun->sdev_gendev);
 }
 
 static inline int ufshcd_rpm_put(struct ufs_hba *hba)
 {
-	return pm_runtime_put(&hba->sdev_ufs_device->sdev_gendev);
+	return pm_runtime_put(&hba->ufs_device_wlun->sdev_gendev);
 }
 
 #endif /* End of Header */

[PATCH v2 17/29] scsi: ufs: Use an SPDX license identifier in the Kconfig file

[Bart Van Assche]

As requested in Documentation/process/license-rules.rst, use an SPDX
license identifier.

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 drivers/scsi/ufs/Kconfig | 25 +------------------------
 1 file changed, 1 insertion(+), 24 deletions(-)

diff --git a/drivers/scsi/ufs/Kconfig b/drivers/scsi/ufs/Kconfig
index 9fe27b01904e..3ebcd5bbc344 100644
--- a/drivers/scsi/ufs/Kconfig
+++ b/drivers/scsi/ufs/Kconfig
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0+
 #
 # Kernel configuration file for the UFS Host Controller
 #
@@ -7,30 +8,6 @@
 # Authors:
 #	Santosh Yaraganavi <santosh.sy@samsung.com>
 #	Vinayak Holikatti <h.vinayak@samsung.com>
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-# See the COPYING file in the top-level directory or visit
-# <http://www.gnu.org/licenses/gpl-2.0.html>
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# This program is provided "AS IS" and "WITH ALL FAULTS" and
-# without warranty of any kind. You are solely responsible for
-# determining the appropriateness of using and distributing
-# the program and assume all risks associated with your exercise
-# of rights with respect to the program, including but not limited
-# to infringement of third party rights, the risks and costs of
-# program errors, damage to or loss of data, programs or equipment,
-# and unavailability or interruption of operations. Under no
-# circumstances will the contributor of this Program be liable for
-# any damages of any kind arising from your use or distribution of
-# this program.
 
 config SCSI_UFSHCD
 	tristate "Universal Flash Storage Controller Driver Core"

[PATCH v2 18/29] scsi: ufs: Remove paths from source code comments

[Bart Van Assche]

Since specifying the path in a source file is redundant, remove the
paths from source code comments.

Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 drivers/scsi/ufs/Kconfig      | 1 -
 drivers/scsi/ufs/ufshcd-pci.c | 1 -
 drivers/scsi/ufs/unipro.h     | 2 --
 3 files changed, 4 deletions(-)

diff --git a/drivers/scsi/ufs/Kconfig b/drivers/scsi/ufs/Kconfig
index 3ebcd5bbc344..393b9a01da36 100644
--- a/drivers/scsi/ufs/Kconfig
+++ b/drivers/scsi/ufs/Kconfig
@@ -2,7 +2,6 @@
 #
 # Kernel configuration file for the UFS Host Controller
 #
-# This code is based on drivers/scsi/ufs/Kconfig
 # Copyright (C) 2011-2013 Samsung India Software Operations
 #
 # Authors:
diff --git a/drivers/scsi/ufs/ufshcd-pci.c b/drivers/scsi/ufs/ufshcd-pci.c
index 81aa14661072..d36873bc44fe 100644
--- a/drivers/scsi/ufs/ufshcd-pci.c
+++ b/drivers/scsi/ufs/ufshcd-pci.c
@@ -2,7 +2,6 @@
 /*
  * Universal Flash Storage Host controller PCI glue driver
  *
- * This code is based on drivers/scsi/ufs/ufshcd-pci.c
  * Copyright (C) 2011-2013 Samsung India Software Operations
  *
  * Authors:
diff --git a/drivers/scsi/ufs/unipro.h b/drivers/scsi/ufs/unipro.h
index 705a6465ba5c..64647aa5c2e0 100644
--- a/drivers/scsi/ufs/unipro.h
+++ b/drivers/scsi/ufs/unipro.h
@@ -1,7 +1,5 @@
 /* SPDX-License-Identifier: GPL-2.0-or-later */
 /*
- * drivers/scsi/ufs/unipro.h
- *
  * Copyright (C) 2013 Samsung Electronics Co., Ltd.
  */
 

[PATCH v2 19/29] scsi: ufs: Remove the TRUE and FALSE definitions

[Bart Van Assche]

In the Linux kernel coding style document
(Documentation/process/coding-style.rst) it is recommended to use the type
'bool' and also the values 'true' and 'false'. Hence this patch that
removes the definitions and uses of TRUE and FALSE from the UFS driver.

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 drivers/scsi/ufs/ufs-exynos.c |  4 ++--
 drivers/scsi/ufs/ufs-exynos.h |  8 ++++----
 drivers/scsi/ufs/ufshcd.c     |  8 ++++----
 drivers/scsi/ufs/unipro.h     | 14 --------------
 4 files changed, 10 insertions(+), 24 deletions(-)

diff --git a/drivers/scsi/ufs/ufs-exynos.c b/drivers/scsi/ufs/ufs-exynos.c
index 474a4a064a68..0b99c74955ef 100644
--- a/drivers/scsi/ufs/ufs-exynos.c
+++ b/drivers/scsi/ufs/ufs-exynos.c
@@ -704,7 +704,7 @@ static void exynos_ufs_establish_connt(struct exynos_ufs *ufs)
 
 	/* local unipro attributes */
 	ufshcd_dme_set(hba, UIC_ARG_MIB(N_DEVICEID), DEV_ID);
-	ufshcd_dme_set(hba, UIC_ARG_MIB(N_DEVICEID_VALID), TRUE);
+	ufshcd_dme_set(hba, UIC_ARG_MIB(N_DEVICEID_VALID), true);
 	ufshcd_dme_set(hba, UIC_ARG_MIB(T_PEERDEVICEID), PEER_DEV_ID);
 	ufshcd_dme_set(hba, UIC_ARG_MIB(T_PEERCPORTID), PEER_CPORT_ID);
 	ufshcd_dme_set(hba, UIC_ARG_MIB(T_CPORTFLAGS), CPORT_DEF_FLAGS);
@@ -1028,7 +1028,7 @@ static int exynos_ufs_post_link(struct ufs_hba *hba)
 
 	if (ufs->opts & EXYNOS_UFS_OPT_SKIP_CONNECTION_ESTAB)
 		ufshcd_dme_set(hba,
-			UIC_ARG_MIB(T_DBG_SKIP_INIT_HIBERN8_EXIT), TRUE);
+			UIC_ARG_MIB(T_DBG_SKIP_INIT_HIBERN8_EXIT), true);
 
 	if (attr->pa_granularity) {
 		exynos_ufs_enable_dbg_mode(hba);
diff --git a/drivers/scsi/ufs/ufs-exynos.h b/drivers/scsi/ufs/ufs-exynos.h
index 1c33e5466082..0b0a3d530ca6 100644
--- a/drivers/scsi/ufs/ufs-exynos.h
+++ b/drivers/scsi/ufs/ufs-exynos.h
@@ -248,22 +248,22 @@ long exynos_ufs_calc_time_cntr(struct exynos_ufs *, long);
 
 static inline void exynos_ufs_enable_ov_tm(struct ufs_hba *hba)
 {
-	ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_OV_TM), TRUE);
+	ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_OV_TM), true);
 }
 
 static inline void exynos_ufs_disable_ov_tm(struct ufs_hba *hba)
 {
-	ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_OV_TM), FALSE);
+	ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_OV_TM), false);
 }
 
 static inline void exynos_ufs_enable_dbg_mode(struct ufs_hba *hba)
 {
-	ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_MODE), TRUE);
+	ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_MODE), true);
 }
 
 static inline void exynos_ufs_disable_dbg_mode(struct ufs_hba *hba)
 {
-	ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_MODE), FALSE);
+	ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_MODE), false);
 }
 
 #endif /* _UFS_EXYNOS_H_ */
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index e0535e4d8669..37527865e26b 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -4325,18 +4325,18 @@ static int ufshcd_change_power_mode(struct ufs_hba *hba,
 			pwr_mode->lane_rx);
 	if (pwr_mode->pwr_rx == FASTAUTO_MODE ||
 			pwr_mode->pwr_rx == FAST_MODE)
-		ufshcd_dme_set(hba, UIC_ARG_MIB(PA_RXTERMINATION), TRUE);
+		ufshcd_dme_set(hba, UIC_ARG_MIB(PA_RXTERMINATION), true);
 	else
-		ufshcd_dme_set(hba, UIC_ARG_MIB(PA_RXTERMINATION), FALSE);
+		ufshcd_dme_set(hba, UIC_ARG_MIB(PA_RXTERMINATION), false);
 
 	ufshcd_dme_set(hba, UIC_ARG_MIB(PA_TXGEAR), pwr_mode->gear_tx);
 	ufshcd_dme_set(hba, UIC_ARG_MIB(PA_ACTIVETXDATALANES),
 			pwr_mode->lane_tx);
 	if (pwr_mode->pwr_tx == FASTAUTO_MODE ||
 			pwr_mode->pwr_tx == FAST_MODE)
-		ufshcd_dme_set(hba, UIC_ARG_MIB(PA_TXTERMINATION), TRUE);
+		ufshcd_dme_set(hba, UIC_ARG_MIB(PA_TXTERMINATION), true);
 	else
-		ufshcd_dme_set(hba, UIC_ARG_MIB(PA_TXTERMINATION), FALSE);
+		ufshcd_dme_set(hba, UIC_ARG_MIB(PA_TXTERMINATION), false);
 
 	if (pwr_mode->pwr_rx == FASTAUTO_MODE ||
 	    pwr_mode->pwr_tx == FASTAUTO_MODE ||
diff --git a/drivers/scsi/ufs/unipro.h b/drivers/scsi/ufs/unipro.h
index 64647aa5c2e0..0521f887e3ac 100644
--- a/drivers/scsi/ufs/unipro.h
+++ b/drivers/scsi/ufs/unipro.h
@@ -298,20 +298,6 @@ enum ufs_unipro_ver {
 #define T_TC0TXMAXSDUSIZE	0x4060
 #define T_TC1TXMAXSDUSIZE	0x4061
 
-#ifdef FALSE
-#undef FALSE
-#endif
-
-#ifdef TRUE
-#undef TRUE
-#endif
-
-/* Boolean attribute values */
-enum {
-	FALSE = 0,
-	TRUE,
-};
-
 /* CPort setting */
 #define E2EFC_ON	(1 << 0)
 #define E2EFC_OFF	(0 << 0)

RE: [PATCH v2 19/29] scsi: ufs: Remove the TRUE and FALSE definitions

[Avri Altman]

> In the Linux kernel coding style document
> (Documentation/process/coding-style.rst) it is recommended to use the type
> 'bool' and also the values 'true' and 'false'. Hence this patch that removes
> the definitions and uses of TRUE and FALSE from the UFS driver.
> 
> Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Avri Altman <avri.altman@wdc.com>

[PATCH v2 20/29] scsi: ufs: Remove locking from around single register writes

[Bart Van Assche]

Single register writes are atomic and hence do not need to be surrounded
by locking. Additionally, MMIO writes are typically posted asynchronously.
Hence, there is no guarantee that these have finished by the time the
spin_unlock*() call has finished. See also the nonposted-mmio property of
the Open Firmware tree. See also pci_iomap().

Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 drivers/scsi/ufs/ufs-mediatek.c | 8 --------
 drivers/scsi/ufs/ufshcd.c       | 4 ----
 2 files changed, 12 deletions(-)

diff --git a/drivers/scsi/ufs/ufs-mediatek.c b/drivers/scsi/ufs/ufs-mediatek.c
index 9a4474210627..2b26acc74efb 100644
--- a/drivers/scsi/ufs/ufs-mediatek.c
+++ b/drivers/scsi/ufs/ufs-mediatek.c
@@ -171,7 +171,6 @@ static int ufs_mtk_hce_enable_notify(struct ufs_hba *hba,
 				     enum ufs_notify_change_status status)
 {
 	struct ufs_mtk_host *host = ufshcd_get_variant(hba);
-	unsigned long flags;
 
 	if (status == PRE_CHANGE) {
 		if (host->unipro_lpm) {
@@ -185,12 +184,8 @@ static int ufs_mtk_hce_enable_notify(struct ufs_hba *hba,
 			ufs_mtk_crypto_enable(hba);
 
 		if (host->caps & UFS_MTK_CAP_DISABLE_AH8) {
-			spin_lock_irqsave(hba->host->host_lock, flags);
 			ufshcd_writel(hba, 0,
 				      REG_AUTO_HIBERNATE_IDLE_TIMER);
-			spin_unlock_irqrestore(hba->host->host_lock,
-					       flags);
-
 			hba->capabilities &= ~MASK_AUTO_HIBERN8_SUPPORT;
 			hba->ahit = 0;
 		}
@@ -994,13 +989,10 @@ static void ufs_mtk_vreg_set_lpm(struct ufs_hba *hba, bool lpm)
 
 static void ufs_mtk_auto_hibern8_disable(struct ufs_hba *hba)
 {
-	unsigned long flags;
 	int ret;
 
 	/* disable auto-hibern8 */
-	spin_lock_irqsave(hba->host->host_lock, flags);
 	ufshcd_writel(hba, 0, REG_AUTO_HIBERNATE_IDLE_TIMER);
-	spin_unlock_irqrestore(hba->host->host_lock, flags);
 
 	/* wait host return to idle state when auto-hibern8 off */
 	ufs_mtk_wait_idle_state(hba, 5);
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 37527865e26b..d1c3f6291538 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -4207,14 +4207,10 @@ EXPORT_SYMBOL_GPL(ufshcd_auto_hibern8_update);
 
 void ufshcd_auto_hibern8_enable(struct ufs_hba *hba)
 {
-	unsigned long flags;
-
 	if (!ufshcd_is_auto_hibern8_supported(hba))
 		return;
 
-	spin_lock_irqsave(hba->host->host_lock, flags);
 	ufshcd_writel(hba, hba->ahit, REG_AUTO_HIBERNATE_IDLE_TIMER);
-	spin_unlock_irqrestore(hba->host->host_lock, flags);
 }
 
  /**

[PATCH v2 21/29] scsi: ufs: Introduce ufshcd_clkgate_delay_set()

[Bart Van Assche]

Since the code to modify delay_ms while holding the host lock occurs
twice, introduce a function that performs this action.

Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 drivers/scsi/ufs/ufs-mediatek.c |  5 +----
 drivers/scsi/ufs/ufshcd.c       | 18 +++++++++++++-----
 drivers/scsi/ufs/ufshcd.h       |  2 ++
 3 files changed, 16 insertions(+), 9 deletions(-)

diff --git a/drivers/scsi/ufs/ufs-mediatek.c b/drivers/scsi/ufs/ufs-mediatek.c
index 2b26acc74efb..d19b35495302 100644
--- a/drivers/scsi/ufs/ufs-mediatek.c
+++ b/drivers/scsi/ufs/ufs-mediatek.c
@@ -857,7 +857,6 @@ static int ufs_mtk_pre_link(struct ufs_hba *hba)
 
 static void ufs_mtk_setup_clk_gating(struct ufs_hba *hba)
 {
-	unsigned long flags;
 	u32 ah_ms;
 
 	if (ufshcd_is_clkgating_allowed(hba)) {
@@ -866,9 +865,7 @@ static void ufs_mtk_setup_clk_gating(struct ufs_hba *hba)
 					  hba->ahit);
 		else
 			ah_ms = 10;
-		spin_lock_irqsave(hba->host->host_lock, flags);
-		hba->clk_gating.delay_ms = ah_ms + 5;
-		spin_unlock_irqrestore(hba->host->host_lock, flags);
+		ufshcd_clkgate_delay_set(hba->dev, ah_ms + 5);
 	}
 }
 
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index d1c3f6291538..cb74a9eeee70 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -1864,18 +1864,26 @@ static ssize_t ufshcd_clkgate_delay_show(struct device *dev,
 	return sysfs_emit(buf, "%lu\n", hba->clk_gating.delay_ms);
 }
 
+void ufshcd_clkgate_delay_set(struct device *dev, unsigned long value)
+{
+	struct ufs_hba *hba = dev_get_drvdata(dev);
+	unsigned long flags;
+
+	spin_lock_irqsave(hba->host->host_lock, flags);
+	hba->clk_gating.delay_ms = value;
+	spin_unlock_irqrestore(hba->host->host_lock, flags);
+}
+EXPORT_SYMBOL_GPL(ufshcd_clkgate_delay_set);
+
 static ssize_t ufshcd_clkgate_delay_store(struct device *dev,
 		struct device_attribute *attr, const char *buf, size_t count)
 {
-	struct ufs_hba *hba = dev_get_drvdata(dev);
-	unsigned long flags, value;
+	unsigned long value;
 
 	if (kstrtoul(buf, 0, &value))
 		return -EINVAL;
 
-	spin_lock_irqsave(hba->host->host_lock, flags);
-	hba->clk_gating.delay_ms = value;
-	spin_unlock_irqrestore(hba->host->host_lock, flags);
+	ufshcd_clkgate_delay_set(dev, value);
 	return count;
 }
 
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index 14414225faa1..3eb5d2c17e39 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -1186,6 +1186,8 @@ int ufshcd_read_string_desc(struct ufs_hba *hba, u8 desc_index,
 int ufshcd_hold(struct ufs_hba *hba, bool async);
 void ufshcd_release(struct ufs_hba *hba);
 
+void ufshcd_clkgate_delay_set(struct device *dev, unsigned long value);
+
 void ufshcd_map_desc_id_to_length(struct ufs_hba *hba, enum desc_idn desc_id,
 				  int *desc_length);
 

[PATCH v2 22/29] scsi: ufs: qcom: Fix ufs_qcom_resume()

[Bart Van Assche]

Clearing hba->is_sys_suspended if ufs_qcom_resume() succeeds is wrong. That
variable must only be cleared if all actions involved in a resume succeed.
Hence remove the statement that clears hba->is_sys_suspended from
ufs_qcom_resume().

Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Fixes: 81c0fc51b7a7 ("ufs-qcom: add support for Qualcomm Technologies Inc platforms")
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 drivers/scsi/ufs/ufs-qcom.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/drivers/scsi/ufs/ufs-qcom.c b/drivers/scsi/ufs/ufs-qcom.c
index dded29722880..98ed9e9f7e2e 100644
--- a/drivers/scsi/ufs/ufs-qcom.c
+++ b/drivers/scsi/ufs/ufs-qcom.c
@@ -640,12 +640,7 @@ static int ufs_qcom_resume(struct ufs_hba *hba, enum ufs_pm_op pm_op)
 			return err;
 	}
 
-	err = ufs_qcom_ice_resume(host);
-	if (err)
-		return err;
-
-	hba->is_sys_suspended = false;
-	return 0;
+	return ufs_qcom_ice_resume(host);
 }
 
 static void ufs_qcom_dev_ref_clk_ctrl(struct ufs_qcom_host *host, bool enable)

[PATCH v2 23/29] scsi: ufs: Remove unnecessary ufshcd-crypto.h include directives

[Bart Van Assche]

ufshcd-crypto.h declares functions that must only be called by the UFS
core. Hence remove the #include "ufshcd-crypto.h" directive from UFS
drivers.

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 drivers/scsi/ufs/ufs-mediatek.c | 1 -
 drivers/scsi/ufs/ufs-qcom-ice.c | 1 -
 drivers/scsi/ufs/ufs-qcom.h     | 1 +
 3 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/scsi/ufs/ufs-mediatek.c b/drivers/scsi/ufs/ufs-mediatek.c
index d19b35495302..84ccb5258736 100644
--- a/drivers/scsi/ufs/ufs-mediatek.c
+++ b/drivers/scsi/ufs/ufs-mediatek.c
@@ -19,7 +19,6 @@
 #include <linux/soc/mediatek/mtk_sip_svc.h>
 
 #include "ufshcd.h"
-#include "ufshcd-crypto.h"
 #include "ufshcd-pltfrm.h"
 #include "ufs_quirks.h"
 #include "unipro.h"
diff --git a/drivers/scsi/ufs/ufs-qcom-ice.c b/drivers/scsi/ufs/ufs-qcom-ice.c
index bbb0ad7590ec..921d6a93b653 100644
--- a/drivers/scsi/ufs/ufs-qcom-ice.c
+++ b/drivers/scsi/ufs/ufs-qcom-ice.c
@@ -9,7 +9,6 @@
 #include <linux/platform_device.h>
 #include <linux/qcom_scm.h>
 
-#include "ufshcd-crypto.h"
 #include "ufs-qcom.h"
 
 #define AES_256_XTS_KEY_SIZE			64
diff --git a/drivers/scsi/ufs/ufs-qcom.h b/drivers/scsi/ufs/ufs-qcom.h
index 51570224a6e2..771bc95d02c7 100644
--- a/drivers/scsi/ufs/ufs-qcom.h
+++ b/drivers/scsi/ufs/ufs-qcom.h
@@ -7,6 +7,7 @@
 
 #include <linux/reset-controller.h>
 #include <linux/reset.h>
+#include "ufshcd.h"
 
 #define MAX_UFS_QCOM_HOSTS	1
 #define MAX_U32                 (~(u32)0)

Re: [PATCH v2 23/29] scsi: ufs: Remove unnecessary ufshcd-crypto.h include directives

[Eric Biggers]

On Tue, Apr 12, 2022 at 11:18:47AM -0700, Bart Van Assche wrote:
> ufshcd-crypto.h declares functions that must only be called by the UFS
> core. Hence remove the #include "ufshcd-crypto.h" directive from UFS
> drivers.
> 
> Signed-off-by: Bart Van Assche <bvanassche@acm.org>
> ---
>  drivers/scsi/ufs/ufs-mediatek.c | 1 -
>  drivers/scsi/ufs/ufs-qcom-ice.c | 1 -
>  drivers/scsi/ufs/ufs-qcom.h     | 1 +
>  3 files changed, 1 insertion(+), 2 deletions(-)

Reviewed-by: Eric Biggers <ebiggers@google.com>

- Eric

[PATCH v2 24/29] scsi: ufs: Fix kernel-doc syntax in ufshcd.h

[Bart Van Assche]

This patch fixes all the warnings and errors reported by the following
command:

scripts/kernel-doc -none drivers/scsi/ufs/ufshcd.h

Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 drivers/scsi/ufs/ufshcd.h | 89 ++++++++++++++++++++++++++++++---------
 1 file changed, 68 insertions(+), 21 deletions(-)

diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index 3eb5d2c17e39..412fe43cd763 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -236,6 +236,7 @@ struct ufs_query {
  * @type: device management command type - Query, NOP OUT
  * @lock: lock to allow one command at a time
  * @complete: internal commands completion
+ * @query: Device management query information
  */
 struct ufs_dev_cmd {
 	enum dev_cmd_type type;
@@ -253,7 +254,7 @@ struct ufs_dev_cmd {
  * @min_freq: min frequency that can be used for clock scaling
  * @curr_freq: indicates the current frequency that it is set to
  * @keep_link_active: indicates that the clk should not be disabled if
-		      link is active
+ *		      link is active
  * @enabled: variable to check against multiple enable/disable
  */
 struct ufs_clk_info {
@@ -308,11 +309,13 @@ struct ufs_pwr_mode_info {
  *                  to set some things
  * @hibern8_notify: called around hibern8 enter/exit
  * @apply_dev_quirks: called to apply device specific quirks
+ * @fixup_dev_quirks: called to modify device specific quirks
  * @suspend: called during host controller PM callback
  * @resume: called during host controller PM callback
  * @dbg_register_dump: used to dump controller debug information
  * @phy_initialization: used to initialize phys
  * @device_reset: called to issue a reset pulse on the UFS device
+ * @config_scaling_param: called to configure clock scaling parameters
  * @program_key: program or evict an inline encryption key
  * @event_notify: called to notify important events
  */
@@ -379,6 +382,7 @@ enum clk_gating_state {
  * @is_initialized: Indicates whether clock gating is initialized or not
  * @active_reqs: number of requests that are pending and should be waited for
  * completion before gating clocks.
+ * @clk_gating_workq: workqueue for clock gating work.
  */
 struct ufs_clk_gating {
 	struct delayed_work gate_work;
@@ -415,9 +419,9 @@ struct ufs_saved_pwr_info {
  * @resume_work: worker to resume devfreq
  * @min_gear: lowest HS gear to scale down to
  * @is_enabled: tracks if scaling is currently enabled or not, controlled by
-		clkscale_enable sysfs node
+ *		clkscale_enable sysfs node
  * @is_allowed: tracks if scaling is currently allowed or not, used to block
-		clock scaling which is not invoked from devfreq governor
+ *		clock scaling which is not invoked from devfreq governor
  * @is_initialized: Indicates whether clock scaling is initialized or not
  * @is_busy_started: tracks if busy period has started or not
  * @is_suspended: tracks if devfreq is suspended or not
@@ -444,7 +448,7 @@ struct ufs_clk_scaling {
 /**
  * struct ufs_event_hist - keeps history of errors
  * @pos: index to indicate cyclic buffer position
- * @reg: cyclic buffer for registers value
+ * @val: cyclic buffer for registers value
  * @tstamp: cyclic buffer for time stamp
  * @cnt: error counter
  */
@@ -463,6 +467,7 @@ struct ufs_event_hist {
  *		reset this after link-startup.
  * @last_hibern8_exit_tstamp: Set time after the hibern8 exit.
  *		Clear after the first successful command completion.
+ * @event: array with event history.
  */
 struct ufs_stats {
 	u32 last_intr_status;
@@ -733,6 +738,13 @@ struct ufs_hba_monitor {
  * @host: Scsi_Host instance of the driver
  * @dev: device handle
  * @ufs_device_wlun: WLUN that controls the entire UFS device.
+ * @hwmon_device: device instance registered with the hwmon core.
+ * @curr_dev_pwr_mode: active UFS device power mode.
+ * @uic_link_state: active state of the link to the UFS device.
+ * @rpm_lvl: desired UFS power management level during runtime PM.
+ * @spm_lvl: desired UFS power management level during system PM.
+ * @pm_op_in_progress: whether or not a PM operation is in progress.
+ * @ahit: value of Auto-Hibernate Idle Timer register.
  * @lrb: local reference block
  * @outstanding_tasks: Bits representing outstanding task requests
  * @outstanding_lock: Protects @outstanding_reqs.
@@ -743,17 +755,26 @@ struct ufs_hba_monitor {
  * @reserved_slot: Used to submit device commands. Protected by @dev_cmd.lock.
  * @ufs_version: UFS Version to which controller complies
  * @vops: pointer to variant specific operations
+ * @vps: pointer to variant specific parameters
  * @priv: pointer to variant specific private data
  * @irq: Irq number of the controller
- * @active_uic_cmd: handle of active UIC command
- * @uic_cmd_mutex: mutex for UIC command
+ * @is_irq_enabled: whether or not the UFS controller interrupt is enabled.
+ * @dev_ref_clk_freq: reference clock frequency
+ * @quirks: bitmask with information about deviations from the UFSHCI standard.
+ * @dev_quirks: bitmask with information about deviations from the UFS standard.
  * @tmf_tag_set: TMF tag set.
  * @tmf_queue: Used to allocate TMF tags.
- * @pwr_done: completion for power mode change
+ * @tmf_rqs: array with pointers to TMF requests while these are in progress.
+ * @active_uic_cmd: handle of active UIC command
+ * @uic_cmd_mutex: mutex for UIC command
+ * @uic_async_done: completion used during UIC processing
  * @ufshcd_state: UFSHCD state
  * @eh_flags: Error handling flags
  * @intr_mask: Interrupt Mask Bits
  * @ee_ctrl_mask: Exception event control mask
+ * @ee_drv_mask: Exception event mask for driver
+ * @ee_usr_mask: Exception event mask for user (set via debugfs)
+ * @ee_ctrl_mutex: Used to serialize exception event information.
  * @is_powered: flag to check if HBA is powered
  * @shutting_down: flag to check if shutdown has been invoked
  * @host_sem: semaphore used to serialize concurrent contexts
@@ -764,26 +785,52 @@ struct ufs_hba_monitor {
  * @uic_error: UFS interconnect layer error status
  * @saved_err: sticky error mask
  * @saved_uic_err: sticky UIC error mask
+ * @ufs_stats: various error counters
  * @force_reset: flag to force eh_work perform a full reset
  * @force_pmc: flag to force a power mode change
  * @silence_err_logs: flag to silence error logs
  * @dev_cmd: ufs device management command information
  * @last_dme_cmd_tstamp: time stamp of the last completed DME command
+ * @nop_out_timeout: NOP OUT timeout value
+ * @dev_info: information about the UFS device
  * @auto_bkops_enabled: to track whether bkops is enabled in device
  * @vreg_info: UFS device voltage regulator information
  * @clk_list_head: UFS host controller clocks list node head
+ * @req_abort_count: number of times ufshcd_abort() has been called
+ * @lanes_per_direction: number of lanes per data direction between the UFS
+ *	controller and the UFS device.
  * @pwr_info: holds current power mode
  * @max_pwr_info: keeps the device max valid pwm
- * @clk_scaling_lock: used to serialize device commands and clock scaling
- * @desc_size: descriptor sizes reported by device
+ * @clk_gating: information related to clock gating
+ * @caps: bitmask with information about UFS controller capabilities
+ * @devfreq: frequency scaling information owned by the devfreq core
+ * @clk_scaling: frequency scaling information owned by the UFS driver
+ * @is_sys_suspended: whether or not the entire system has been suspended
  * @urgent_bkops_lvl: keeps track of urgent bkops level for device
  * @is_urgent_bkops_lvl_checked: keeps track if the urgent bkops level for
  *  device is known or not.
+ * @clk_scaling_lock: used to serialize device commands and clock scaling
+ * @desc_size: descriptor sizes reported by device
  * @scsi_block_reqs_cnt: reference counting for scsi block requests
+ * @bsg_dev: struct device associated with the BSG queue
+ * @bsg_queue: BSG queue associated with the UFS controller
+ * @rpm_dev_flush_recheck_work: used to suspend from RPM (runtime power
+ *	management) after the UFS device has finished a WriteBooster buffer
+ *	flush or auto BKOP.
+ * @ufshpb_dev: information related to HPB (Host Performance Booster).
+ * @monitor: statistics about UFS commands
  * @crypto_capabilities: Content of crypto capabilities register (0x100)
  * @crypto_cap_array: Array of crypto capabilities
  * @crypto_cfg_register: Start of the crypto cfg array
  * @crypto_profile: the crypto profile of this hba (if applicable)
+ * @debugfs_root: UFS controller debugfs root directory
+ * @debugfs_ee_work: used to restore ee_ctrl_mask after a delay
+ * @debugfs_ee_rate_limit_ms: user configurable delay after which to restore
+ *	ee_ctrl_mask
+ * @luns_avail: number of regular and well known LUNs supported by the UFS
+ *	device
+ * @complete_put: whether or not to call ufshcd_rpm_put() from inside
+ *	ufshcd_resume_complete()
  */
 struct ufs_hba {
 	void __iomem *mmio_base;
@@ -853,9 +900,9 @@ struct ufs_hba {
 	enum ufshcd_state ufshcd_state;
 	u32 eh_flags;
 	u32 intr_mask;
-	u16 ee_ctrl_mask; /* Exception event mask */
-	u16 ee_drv_mask;  /* Exception event mask for driver */
-	u16 ee_usr_mask;  /* Exception event mask for user (via debugfs) */
+	u16 ee_ctrl_mask;
+	u16 ee_drv_mask;
+	u16 ee_usr_mask;
 	struct mutex ee_ctrl_mutex;
 	bool is_powered;
 	bool shutting_down;
@@ -996,11 +1043,11 @@ static inline bool ufshcd_is_user_access_allowed(struct ufs_hba *hba)
 	readl((hba)->mmio_base + (reg))
 
 /**
- * ufshcd_rmwl - read modify write into a register
- * @hba - per adapter instance
- * @mask - mask to apply on read value
- * @val - actual value to write
- * @reg - register address
+ * ufshcd_rmwl - perform read/modify/write for a controller register
+ * @hba: per adapter instance
+ * @mask: mask to apply on read value
+ * @val: actual value to write
+ * @reg: register address
  */
 static inline void ufshcd_rmwl(struct ufs_hba *hba, u32 mask, u32 val, u32 reg)
 {
@@ -1035,8 +1082,8 @@ static inline void check_upiu_size(void)
 
 /**
  * ufshcd_set_variant - set variant specific data to the hba
- * @hba - per adapter instance
- * @variant - pointer to variant specific data
+ * @hba: per adapter instance
+ * @variant: pointer to variant specific data
  */
 static inline void ufshcd_set_variant(struct ufs_hba *hba, void *variant)
 {
@@ -1046,7 +1093,7 @@ static inline void ufshcd_set_variant(struct ufs_hba *hba, void *variant)
 
 /**
  * ufshcd_get_variant - get variant specific data from the hba
- * @hba - per adapter instance
+ * @hba: per adapter instance
  */
 static inline void *ufshcd_get_variant(struct ufs_hba *hba)
 {
@@ -1367,7 +1414,7 @@ static inline void ufshcd_vops_config_scaling_param(struct ufs_hba *hba,
 
 extern struct ufs_pm_lvl_states ufs_pm_lvl_states[];
 
-/*
+/**
  * ufshcd_scsi_to_upiu_lun - maps scsi LUN to UPIU LUN
  * @scsi_lun: scsi LUN id
  *

[PATCH v2 25/29] scsi: ufs: Minimize #include directives

[Bart Van Assche]

Only include those headers of which the declarations are used directly.

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 drivers/scsi/ufs/cdns-pltfrm.c        |  1 +
 drivers/scsi/ufs/tc-dwc-g210-pci.c    |  1 +
 drivers/scsi/ufs/tc-dwc-g210-pltfrm.c |  1 +
 drivers/scsi/ufs/tc-dwc-g210.c        |  2 ++
 drivers/scsi/ufs/tc-dwc-g210.h        |  2 ++
 drivers/scsi/ufs/ufs-exynos.c         |  1 +
 drivers/scsi/ufs/ufs-hisi.c           |  2 ++
 drivers/scsi/ufs/ufs-mediatek.c       |  3 +++
 drivers/scsi/ufs/ufs-qcom-ice.c       |  1 +
 drivers/scsi/ufs/ufs-qcom.c           |  4 ++++
 drivers/scsi/ufs/ufs-sysfs.c          |  1 +
 drivers/scsi/ufs/ufs-sysfs.h          |  3 ++-
 drivers/scsi/ufs/ufs_bsg.c            |  5 ++++
 drivers/scsi/ufs/ufs_bsg.h            |  7 +-----
 drivers/scsi/ufs/ufshcd-crypto.h      |  5 ++--
 drivers/scsi/ufs/ufshcd-dwc.c         |  2 ++
 drivers/scsi/ufs/ufshcd-dwc.h         |  2 ++
 drivers/scsi/ufs/ufshcd-pci.c         |  2 ++
 drivers/scsi/ufs/ufshcd-pltfrm.c      |  1 +
 drivers/scsi/ufs/ufshcd.c             |  9 ++++++++
 drivers/scsi/ufs/ufshcd.h             | 33 ++++-----------------------
 drivers/scsi/ufs/ufshci.h             |  2 ++
 drivers/scsi/ufs/ufshpb.c             |  4 ++++
 23 files changed, 56 insertions(+), 38 deletions(-)

diff --git a/drivers/scsi/ufs/cdns-pltfrm.c b/drivers/scsi/ufs/cdns-pltfrm.c
index e91cf9fd5a95..e05c0ae64eea 100644
--- a/drivers/scsi/ufs/cdns-pltfrm.c
+++ b/drivers/scsi/ufs/cdns-pltfrm.c
@@ -9,6 +9,7 @@
  *
  */
 
+#include <linux/clk.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
diff --git a/drivers/scsi/ufs/tc-dwc-g210-pci.c b/drivers/scsi/ufs/tc-dwc-g210-pci.c
index 7b08e2e07cc5..e635c211c783 100644
--- a/drivers/scsi/ufs/tc-dwc-g210-pci.c
+++ b/drivers/scsi/ufs/tc-dwc-g210-pci.c
@@ -11,6 +11,7 @@
 #include "ufshcd-dwc.h"
 #include "tc-dwc-g210.h"
 
+#include <linux/module.h>
 #include <linux/pci.h>
 #include <linux/pm_runtime.h>
 
diff --git a/drivers/scsi/ufs/tc-dwc-g210-pltfrm.c b/drivers/scsi/ufs/tc-dwc-g210-pltfrm.c
index 783ec43efa78..f15a84d0c176 100644
--- a/drivers/scsi/ufs/tc-dwc-g210-pltfrm.c
+++ b/drivers/scsi/ufs/tc-dwc-g210-pltfrm.c
@@ -12,6 +12,7 @@
 #include <linux/platform_device.h>
 #include <linux/of.h>
 #include <linux/delay.h>
+#include <linux/pm_runtime.h>
 
 #include "ufshcd-pltfrm.h"
 #include "ufshcd-dwc.h"
diff --git a/drivers/scsi/ufs/tc-dwc-g210.c b/drivers/scsi/ufs/tc-dwc-g210.c
index f954a68f6b4c..7ef67c9fc5b8 100644
--- a/drivers/scsi/ufs/tc-dwc-g210.c
+++ b/drivers/scsi/ufs/tc-dwc-g210.c
@@ -7,6 +7,8 @@
  * Authors: Joao Pinto <jpinto@synopsys.com>
  */
 
+#include <linux/module.h>
+
 #include "ufshcd.h"
 #include "unipro.h"
 
diff --git a/drivers/scsi/ufs/tc-dwc-g210.h b/drivers/scsi/ufs/tc-dwc-g210.h
index 5a506da03f4a..f7154012f5c7 100644
--- a/drivers/scsi/ufs/tc-dwc-g210.h
+++ b/drivers/scsi/ufs/tc-dwc-g210.h
@@ -10,6 +10,8 @@
 #ifndef _TC_DWC_G210_H
 #define _TC_DWC_G210_H
 
+struct ufs_hba;
+
 int tc_dwc_g210_config_40_bit(struct ufs_hba *hba);
 int tc_dwc_g210_config_20_bit(struct ufs_hba *hba);
 
diff --git a/drivers/scsi/ufs/ufs-exynos.c b/drivers/scsi/ufs/ufs-exynos.c
index 0b99c74955ef..ddb2d42605c5 100644
--- a/drivers/scsi/ufs/ufs-exynos.c
+++ b/drivers/scsi/ufs/ufs-exynos.c
@@ -9,6 +9,7 @@
  */
 
 #include <linux/clk.h>
+#include <linux/delay.h>
 #include <linux/module.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
diff --git a/drivers/scsi/ufs/ufs-hisi.c b/drivers/scsi/ufs/ufs-hisi.c
index ab1a7ebd89b1..7046143063ee 100644
--- a/drivers/scsi/ufs/ufs-hisi.c
+++ b/drivers/scsi/ufs/ufs-hisi.c
@@ -7,6 +7,8 @@
  */
 
 #include <linux/time.h>
+#include <linux/delay.h>
+#include <linux/module.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
 #include <linux/dma-mapping.h>
diff --git a/drivers/scsi/ufs/ufs-mediatek.c b/drivers/scsi/ufs/ufs-mediatek.c
index 84ccb5258736..083d6bd4d561 100644
--- a/drivers/scsi/ufs/ufs-mediatek.c
+++ b/drivers/scsi/ufs/ufs-mediatek.c
@@ -8,6 +8,9 @@
 
 #include <linux/arm-smccc.h>
 #include <linux/bitfield.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/module.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
 #include <linux/of_device.h>
diff --git a/drivers/scsi/ufs/ufs-qcom-ice.c b/drivers/scsi/ufs/ufs-qcom-ice.c
index 921d6a93b653..745e48ec598f 100644
--- a/drivers/scsi/ufs/ufs-qcom-ice.c
+++ b/drivers/scsi/ufs/ufs-qcom-ice.c
@@ -6,6 +6,7 @@
  * Copyright 2019 Google LLC
  */
 
+#include <linux/delay.h>
 #include <linux/platform_device.h>
 #include <linux/qcom_scm.h>
 
diff --git a/drivers/scsi/ufs/ufs-qcom.c b/drivers/scsi/ufs/ufs-qcom.c
index 98ed9e9f7e2e..a63844961222 100644
--- a/drivers/scsi/ufs/ufs-qcom.c
+++ b/drivers/scsi/ufs/ufs-qcom.c
@@ -5,6 +5,9 @@
 
 #include <linux/acpi.h>
 #include <linux/time.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/module.h>
 #include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/phy/phy.h>
@@ -18,6 +21,7 @@
 #include "ufs-qcom.h"
 #include "ufshci.h"
 #include "ufs_quirks.h"
+
 #define UFS_QCOM_DEFAULT_DBG_PRINT_EN	\
 	(UFS_QCOM_DBG_PRINT_REGS_EN | UFS_QCOM_DBG_PRINT_TEST_BUS_EN)
 
diff --git a/drivers/scsi/ufs/ufs-sysfs.c b/drivers/scsi/ufs/ufs-sysfs.c
index 5c405ff7b6ea..95a4e64ce401 100644
--- a/drivers/scsi/ufs/ufs-sysfs.c
+++ b/drivers/scsi/ufs/ufs-sysfs.c
@@ -8,6 +8,7 @@
 
 #include "ufs.h"
 #include "ufs-sysfs.h"
+#include "ufshcd.h"
 
 static const char *ufshcd_uic_link_state_to_string(
 			enum uic_link_state state)
diff --git a/drivers/scsi/ufs/ufs-sysfs.h b/drivers/scsi/ufs/ufs-sysfs.h
index 0f4e750a6748..8d94af3b8077 100644
--- a/drivers/scsi/ufs/ufs-sysfs.h
+++ b/drivers/scsi/ufs/ufs-sysfs.h
@@ -7,11 +7,12 @@
 
 #include <linux/sysfs.h>
 
-#include "ufshcd.h"
+struct device;
 
 void ufs_sysfs_add_nodes(struct device *dev);
 void ufs_sysfs_remove_nodes(struct device *dev);
 
 extern const struct attribute_group ufs_sysfs_unit_descriptor_group;
 extern const struct attribute_group ufs_sysfs_lun_attributes_group;
+
 #endif
diff --git a/drivers/scsi/ufs/ufs_bsg.c b/drivers/scsi/ufs/ufs_bsg.c
index 39bf204c6ec3..fbcdfb713542 100644
--- a/drivers/scsi/ufs/ufs_bsg.c
+++ b/drivers/scsi/ufs/ufs_bsg.c
@@ -4,7 +4,12 @@
  *
  * Copyright (C) 2018 Western Digital Corporation
  */
+
+#include <linux/bsg-lib.h>
+#include <scsi/scsi.h>
+#include <scsi/scsi_host.h>
 #include "ufs_bsg.h"
+#include "ufshcd.h"
 
 static int ufs_bsg_get_query_desc_size(struct ufs_hba *hba, int *desc_len,
 				       struct utp_upiu_query *qr)
diff --git a/drivers/scsi/ufs/ufs_bsg.h b/drivers/scsi/ufs/ufs_bsg.h
index d09918758631..57712d2656d2 100644
--- a/drivers/scsi/ufs/ufs_bsg.h
+++ b/drivers/scsi/ufs/ufs_bsg.h
@@ -5,12 +5,7 @@
 #ifndef UFS_BSG_H
 #define UFS_BSG_H
 
-#include <linux/bsg-lib.h>
-#include <scsi/scsi.h>
-#include <scsi/scsi_host.h>
-
-#include "ufshcd.h"
-#include "ufs.h"
+struct ufs_hba;
 
 #ifdef CONFIG_SCSI_UFS_BSG
 void ufs_bsg_remove(struct ufs_hba *hba);
diff --git a/drivers/scsi/ufs/ufshcd-crypto.h b/drivers/scsi/ufs/ufshcd-crypto.h
index e18c01276873..57dd51256b57 100644
--- a/drivers/scsi/ufs/ufshcd-crypto.h
+++ b/drivers/scsi/ufs/ufshcd-crypto.h
@@ -6,9 +6,10 @@
 #ifndef _UFSHCD_CRYPTO_H
 #define _UFSHCD_CRYPTO_H
 
-#ifdef CONFIG_SCSI_UFS_CRYPTO
+#include <scsi/scsi_cmnd.h>
 #include "ufshcd.h"
-#include "ufshci.h"
+
+#ifdef CONFIG_SCSI_UFS_CRYPTO
 
 static inline void ufshcd_prepare_lrbp_crypto(struct request *rq,
 					      struct ufshcd_lrb *lrbp)
diff --git a/drivers/scsi/ufs/ufshcd-dwc.c b/drivers/scsi/ufs/ufshcd-dwc.c
index 5bb9d3a88795..a57973c8d2a1 100644
--- a/drivers/scsi/ufs/ufshcd-dwc.c
+++ b/drivers/scsi/ufs/ufshcd-dwc.c
@@ -7,6 +7,8 @@
  * Authors: Joao Pinto <jpinto@synopsys.com>
  */
 
+#include <linux/module.h>
+
 #include "ufshcd.h"
 #include "unipro.h"
 
diff --git a/drivers/scsi/ufs/ufshcd-dwc.h b/drivers/scsi/ufs/ufshcd-dwc.h
index 4268ca2eb64c..43b70794e24f 100644
--- a/drivers/scsi/ufs/ufshcd-dwc.h
+++ b/drivers/scsi/ufs/ufshcd-dwc.h
@@ -10,6 +10,8 @@
 #ifndef _UFSHCD_DWC_H
 #define _UFSHCD_DWC_H
 
+#include "ufshcd.h"
+
 struct ufshcd_dme_attr_val {
 	u32 attr_sel;
 	u32 mib_val;
diff --git a/drivers/scsi/ufs/ufshcd-pci.c b/drivers/scsi/ufs/ufshcd-pci.c
index d36873bc44fe..5fe30dcf98b4 100644
--- a/drivers/scsi/ufs/ufshcd-pci.c
+++ b/drivers/scsi/ufs/ufshcd-pci.c
@@ -10,6 +10,8 @@
  */
 
 #include "ufshcd.h"
+#include <linux/delay.h>
+#include <linux/module.h>
 #include <linux/pci.h>
 #include <linux/pm_runtime.h>
 #include <linux/pm_qos.h>
diff --git a/drivers/scsi/ufs/ufshcd-pltfrm.c b/drivers/scsi/ufs/ufshcd-pltfrm.c
index fc5191101192..f5313f407617 100644
--- a/drivers/scsi/ufs/ufshcd-pltfrm.c
+++ b/drivers/scsi/ufs/ufshcd-pltfrm.c
@@ -8,6 +8,7 @@
  *	Vinayak Holikatti <h.vinayak@samsung.com>
  */
 
+#include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
 #include <linux/of.h>
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index cb74a9eeee70..5308f43bda6e 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -16,7 +16,16 @@
 #include <linux/bitfield.h>
 #include <linux/blk-pm.h>
 #include <linux/blkdev.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/nls.h>
+#include <linux/regulator/consumer.h>
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_dbg.h>
 #include <scsi/scsi_driver.h>
+#include <scsi/scsi_eh.h>
 #include "ufshcd.h"
 #include "ufs_quirks.h"
 #include "unipro.h"
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index 412fe43cd763..ab0c643296c0 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -12,38 +12,13 @@
 #ifndef _UFSHCD_H
 #define _UFSHCD_H
 
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/delay.h>
-#include <linux/slab.h>
-#include <linux/spinlock.h>
-#include <linux/rwsem.h>
-#include <linux/workqueue.h>
-#include <linux/errno.h>
-#include <linux/types.h>
-#include <linux/wait.h>
-#include <linux/bitops.h>
-#include <linux/pm_runtime.h>
-#include <linux/clk.h>
-#include <linux/completion.h>
-#include <linux/regulator/consumer.h>
 #include <linux/bitfield.h>
-#include <linux/devfreq.h>
 #include <linux/blk-crypto-profile.h>
+#include <linux/blk-mq.h>
+#include <linux/devfreq.h>
+#include <linux/pm_runtime.h>
+#include <scsi/scsi_device.h>
 #include "unipro.h"
-
-#include <asm/irq.h>
-#include <asm/byteorder.h>
-#include <scsi/scsi.h>
-#include <scsi/scsi_cmnd.h>
-#include <scsi/scsi_host.h>
-#include <scsi/scsi_tcq.h>
-#include <scsi/scsi_dbg.h>
-#include <scsi/scsi_eh.h>
-
 #include "ufs.h"
 #include "ufs_quirks.h"
 #include "ufshci.h"
diff --git a/drivers/scsi/ufs/ufshci.h b/drivers/scsi/ufs/ufshci.h
index a7ff0e5b5494..f81aa95ffbc4 100644
--- a/drivers/scsi/ufs/ufshci.h
+++ b/drivers/scsi/ufs/ufshci.h
@@ -11,6 +11,8 @@
 #ifndef _UFSHCI_H
 #define _UFSHCI_H
 
+#include <scsi/scsi_host.h>
+
 enum {
 	TASK_REQ_UPIU_SIZE_DWORDS	= 8,
 	TASK_RSP_UPIU_SIZE_DWORDS	= 8,
diff --git a/drivers/scsi/ufs/ufshpb.c b/drivers/scsi/ufs/ufshpb.c
index ebd8fc8fc109..5a974642779f 100644
--- a/drivers/scsi/ufs/ufshpb.c
+++ b/drivers/scsi/ufs/ufshpb.c
@@ -10,6 +10,10 @@
  */
 
 #include <asm/unaligned.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/module.h>
+#include <scsi/scsi_cmnd.h>
 
 #include "ufshcd.h"
 #include "ufshpb.h"

[PATCH v2 26/29] scsi: ufs: Split the ufshcd.h header file

[Bart Van Assche]

Split the ufshcd.h header file into a header file that defines the
interface used by UFS drivers and another header file with declarations
and data structures only used by the UFS core.

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 drivers/scsi/ufs/ufs-debugfs.c   |   1 +
 drivers/scsi/ufs/ufs-hwmon.c     |   1 +
 drivers/scsi/ufs/ufs-sysfs.c     |   2 +-
 drivers/scsi/ufs/ufs_bsg.c       |   1 +
 drivers/scsi/ufs/ufshcd-crypto.h |   2 +
 drivers/scsi/ufs/ufshcd-priv.h   | 279 +++++++++++++++++++++++++++++++
 drivers/scsi/ufs/ufshcd.c        |   2 +-
 drivers/scsi/ufs/ufshcd.h        | 222 ------------------------
 drivers/scsi/ufs/ufshpb.c        |   2 +-
 9 files changed, 287 insertions(+), 225 deletions(-)
 create mode 100644 drivers/scsi/ufs/ufshcd-priv.h

diff --git a/drivers/scsi/ufs/ufs-debugfs.c b/drivers/scsi/ufs/ufs-debugfs.c
index 4a0bbcf1757a..c10a8f09682b 100644
--- a/drivers/scsi/ufs/ufs-debugfs.c
+++ b/drivers/scsi/ufs/ufs-debugfs.c
@@ -5,6 +5,7 @@
 
 #include "ufs-debugfs.h"
 #include "ufshcd.h"
+#include "ufshcd-priv.h"
 
 static struct dentry *ufs_debugfs_root;
 
diff --git a/drivers/scsi/ufs/ufs-hwmon.c b/drivers/scsi/ufs/ufs-hwmon.c
index 74855491dc8f..c38d9d98a86d 100644
--- a/drivers/scsi/ufs/ufs-hwmon.c
+++ b/drivers/scsi/ufs/ufs-hwmon.c
@@ -8,6 +8,7 @@
 #include <linux/units.h>
 
 #include "ufshcd.h"
+#include "ufshcd-priv.h"
 
 struct ufs_hwmon_data {
 	struct ufs_hba *hba;
diff --git a/drivers/scsi/ufs/ufs-sysfs.c b/drivers/scsi/ufs/ufs-sysfs.c
index 95a4e64ce401..8a3c6442f291 100644
--- a/drivers/scsi/ufs/ufs-sysfs.c
+++ b/drivers/scsi/ufs/ufs-sysfs.c
@@ -8,7 +8,7 @@
 
 #include "ufs.h"
 #include "ufs-sysfs.h"
-#include "ufshcd.h"
+#include "ufshcd-priv.h"
 
 static const char *ufshcd_uic_link_state_to_string(
 			enum uic_link_state state)
diff --git a/drivers/scsi/ufs/ufs_bsg.c b/drivers/scsi/ufs/ufs_bsg.c
index fbcdfb713542..9e9b93867cab 100644
--- a/drivers/scsi/ufs/ufs_bsg.c
+++ b/drivers/scsi/ufs/ufs_bsg.c
@@ -10,6 +10,7 @@
 #include <scsi/scsi_host.h>
 #include "ufs_bsg.h"
 #include "ufshcd.h"
+#include "ufshcd-priv.h"
 
 static int ufs_bsg_get_query_desc_size(struct ufs_hba *hba, int *desc_len,
 				       struct utp_upiu_query *qr)
diff --git a/drivers/scsi/ufs/ufshcd-crypto.h b/drivers/scsi/ufs/ufshcd-crypto.h
index 57dd51256b57..9f98f18f9646 100644
--- a/drivers/scsi/ufs/ufshcd-crypto.h
+++ b/drivers/scsi/ufs/ufshcd-crypto.h
@@ -8,6 +8,8 @@
 
 #include <scsi/scsi_cmnd.h>
 #include "ufshcd.h"
+#include "ufshcd-priv.h"
+#include "ufshci.h"
 
 #ifdef CONFIG_SCSI_UFS_CRYPTO
 
diff --git a/drivers/scsi/ufs/ufshcd-priv.h b/drivers/scsi/ufs/ufshcd-priv.h
new file mode 100644
index 000000000000..3fa8ab94e4e1
--- /dev/null
+++ b/drivers/scsi/ufs/ufshcd-priv.h
@@ -0,0 +1,279 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#ifndef _UFSHCD_PRIV_H_
+#define _UFSHCD_PRIV_H_
+
+#include <linux/pm_runtime.h>
+#include "ufshcd.h"
+
+static inline bool ufshcd_is_user_access_allowed(struct ufs_hba *hba)
+{
+	return !hba->shutting_down;
+}
+
+void ufshcd_schedule_eh_work(struct ufs_hba *hba);
+
+static inline bool ufshcd_keep_autobkops_enabled_except_suspend(
+							struct ufs_hba *hba)
+{
+	return hba->caps & UFSHCD_CAP_KEEP_AUTO_BKOPS_ENABLED_EXCEPT_SUSPEND;
+}
+
+static inline u8 ufshcd_wb_get_query_index(struct ufs_hba *hba)
+{
+	if (hba->dev_info.wb_buffer_type == WB_BUF_MODE_LU_DEDICATED)
+		return hba->dev_info.wb_dedicated_lu;
+	return 0;
+}
+
+#ifdef CONFIG_SCSI_UFS_HWMON
+void ufs_hwmon_probe(struct ufs_hba *hba, u8 mask);
+void ufs_hwmon_remove(struct ufs_hba *hba);
+void ufs_hwmon_notify_event(struct ufs_hba *hba, u8 ee_mask);
+#else
+static inline void ufs_hwmon_probe(struct ufs_hba *hba, u8 mask) {}
+static inline void ufs_hwmon_remove(struct ufs_hba *hba) {}
+static inline void ufs_hwmon_notify_event(struct ufs_hba *hba, u8 ee_mask) {}
+#endif
+
+int ufshcd_read_desc_param(struct ufs_hba *hba,
+			   enum desc_idn desc_id,
+			   int desc_index,
+			   u8 param_offset,
+			   u8 *param_read_buf,
+			   u8 param_size);
+int ufshcd_query_attr_retry(struct ufs_hba *hba, enum query_opcode opcode,
+			    enum attr_idn idn, u8 index, u8 selector,
+			    u32 *attr_val);
+int ufshcd_query_attr(struct ufs_hba *hba, enum query_opcode opcode,
+		      enum attr_idn idn, u8 index, u8 selector, u32 *attr_val);
+int ufshcd_query_flag(struct ufs_hba *hba, enum query_opcode opcode,
+	enum flag_idn idn, u8 index, bool *flag_res);
+void ufshcd_auto_hibern8_update(struct ufs_hba *hba, u32 ahit);
+
+#define SD_ASCII_STD true
+#define SD_RAW false
+int ufshcd_read_string_desc(struct ufs_hba *hba, u8 desc_index,
+			    u8 **buf, bool ascii);
+
+int ufshcd_hold(struct ufs_hba *hba, bool async);
+void ufshcd_release(struct ufs_hba *hba);
+
+void ufshcd_map_desc_id_to_length(struct ufs_hba *hba, enum desc_idn desc_id,
+				  int *desc_length);
+
+int ufshcd_send_uic_cmd(struct ufs_hba *hba, struct uic_command *uic_cmd);
+
+int ufshcd_exec_raw_upiu_cmd(struct ufs_hba *hba,
+			     struct utp_upiu_req *req_upiu,
+			     struct utp_upiu_req *rsp_upiu,
+			     int msgcode,
+			     u8 *desc_buff, int *buff_len,
+			     enum query_opcode desc_op);
+
+int ufshcd_wb_toggle(struct ufs_hba *hba, bool enable);
+
+/* Wrapper functions for safely calling variant operations */
+static inline const char *ufshcd_get_var_name(struct ufs_hba *hba)
+{
+	if (hba->vops)
+		return hba->vops->name;
+	return "";
+}
+
+static inline void ufshcd_vops_exit(struct ufs_hba *hba)
+{
+	if (hba->vops && hba->vops->exit)
+		return hba->vops->exit(hba);
+}
+
+static inline u32 ufshcd_vops_get_ufs_hci_version(struct ufs_hba *hba)
+{
+	if (hba->vops && hba->vops->get_ufs_hci_version)
+		return hba->vops->get_ufs_hci_version(hba);
+
+	return ufshcd_readl(hba, REG_UFS_VERSION);
+}
+
+static inline int ufshcd_vops_clk_scale_notify(struct ufs_hba *hba,
+			bool up, enum ufs_notify_change_status status)
+{
+	if (hba->vops && hba->vops->clk_scale_notify)
+		return hba->vops->clk_scale_notify(hba, up, status);
+	return 0;
+}
+
+static inline void ufshcd_vops_event_notify(struct ufs_hba *hba,
+					    enum ufs_event_type evt,
+					    void *data)
+{
+	if (hba->vops && hba->vops->event_notify)
+		hba->vops->event_notify(hba, evt, data);
+}
+
+static inline int ufshcd_vops_setup_clocks(struct ufs_hba *hba, bool on,
+					enum ufs_notify_change_status status)
+{
+	if (hba->vops && hba->vops->setup_clocks)
+		return hba->vops->setup_clocks(hba, on, status);
+	return 0;
+}
+
+static inline int ufshcd_vops_hce_enable_notify(struct ufs_hba *hba,
+						bool status)
+{
+	if (hba->vops && hba->vops->hce_enable_notify)
+		return hba->vops->hce_enable_notify(hba, status);
+
+	return 0;
+}
+static inline int ufshcd_vops_link_startup_notify(struct ufs_hba *hba,
+						bool status)
+{
+	if (hba->vops && hba->vops->link_startup_notify)
+		return hba->vops->link_startup_notify(hba, status);
+
+	return 0;
+}
+
+static inline int ufshcd_vops_pwr_change_notify(struct ufs_hba *hba,
+				  enum ufs_notify_change_status status,
+				  struct ufs_pa_layer_attr *dev_max_params,
+				  struct ufs_pa_layer_attr *dev_req_params)
+{
+	if (hba->vops && hba->vops->pwr_change_notify)
+		return hba->vops->pwr_change_notify(hba, status,
+					dev_max_params, dev_req_params);
+
+	return -ENOTSUPP;
+}
+
+static inline void ufshcd_vops_setup_task_mgmt(struct ufs_hba *hba,
+					int tag, u8 tm_function)
+{
+	if (hba->vops && hba->vops->setup_task_mgmt)
+		return hba->vops->setup_task_mgmt(hba, tag, tm_function);
+}
+
+static inline void ufshcd_vops_hibern8_notify(struct ufs_hba *hba,
+					enum uic_cmd_dme cmd,
+					enum ufs_notify_change_status status)
+{
+	if (hba->vops && hba->vops->hibern8_notify)
+		return hba->vops->hibern8_notify(hba, cmd, status);
+}
+
+static inline int ufshcd_vops_apply_dev_quirks(struct ufs_hba *hba)
+{
+	if (hba->vops && hba->vops->apply_dev_quirks)
+		return hba->vops->apply_dev_quirks(hba);
+	return 0;
+}
+
+static inline void ufshcd_vops_fixup_dev_quirks(struct ufs_hba *hba)
+{
+	if (hba->vops && hba->vops->fixup_dev_quirks)
+		hba->vops->fixup_dev_quirks(hba);
+}
+
+static inline int ufshcd_vops_suspend(struct ufs_hba *hba, enum ufs_pm_op op,
+				enum ufs_notify_change_status status)
+{
+	if (hba->vops && hba->vops->suspend)
+		return hba->vops->suspend(hba, op, status);
+
+	return 0;
+}
+
+static inline int ufshcd_vops_resume(struct ufs_hba *hba, enum ufs_pm_op op)
+{
+	if (hba->vops && hba->vops->resume)
+		return hba->vops->resume(hba, op);
+
+	return 0;
+}
+
+static inline void ufshcd_vops_dbg_register_dump(struct ufs_hba *hba)
+{
+	if (hba->vops && hba->vops->dbg_register_dump)
+		hba->vops->dbg_register_dump(hba);
+}
+
+static inline int ufshcd_vops_device_reset(struct ufs_hba *hba)
+{
+	if (hba->vops && hba->vops->device_reset)
+		return hba->vops->device_reset(hba);
+
+	return -EOPNOTSUPP;
+}
+
+static inline void ufshcd_vops_config_scaling_param(struct ufs_hba *hba,
+		struct devfreq_dev_profile *p,
+		struct devfreq_simple_ondemand_data *data)
+{
+	if (hba->vops && hba->vops->config_scaling_param)
+		hba->vops->config_scaling_param(hba, p, data);
+}
+
+extern struct ufs_pm_lvl_states ufs_pm_lvl_states[];
+
+/**
+ * ufshcd_scsi_to_upiu_lun - maps scsi LUN to UPIU LUN
+ * @scsi_lun: scsi LUN id
+ *
+ * Returns UPIU LUN id
+ */
+static inline u8 ufshcd_scsi_to_upiu_lun(unsigned int scsi_lun)
+{
+	if (scsi_is_wlun(scsi_lun))
+		return (scsi_lun & UFS_UPIU_MAX_UNIT_NUM_ID)
+			| UFS_UPIU_WLUN_ID;
+	else
+		return scsi_lun & UFS_UPIU_MAX_UNIT_NUM_ID;
+}
+
+int __ufshcd_write_ee_control(struct ufs_hba *hba, u32 ee_ctrl_mask);
+int ufshcd_write_ee_control(struct ufs_hba *hba);
+int ufshcd_update_ee_control(struct ufs_hba *hba, u16 *mask, u16 *other_mask,
+			     u16 set, u16 clr);
+
+static inline int ufshcd_update_ee_drv_mask(struct ufs_hba *hba,
+					    u16 set, u16 clr)
+{
+	return ufshcd_update_ee_control(hba, &hba->ee_drv_mask,
+					&hba->ee_usr_mask, set, clr);
+}
+
+static inline int ufshcd_update_ee_usr_mask(struct ufs_hba *hba,
+					    u16 set, u16 clr)
+{
+	return ufshcd_update_ee_control(hba, &hba->ee_usr_mask,
+					&hba->ee_drv_mask, set, clr);
+}
+
+static inline int ufshcd_rpm_get_sync(struct ufs_hba *hba)
+{
+	return pm_runtime_get_sync(&hba->ufs_device_wlun->sdev_gendev);
+}
+
+static inline int ufshcd_rpm_put_sync(struct ufs_hba *hba)
+{
+	return pm_runtime_put_sync(&hba->ufs_device_wlun->sdev_gendev);
+}
+
+static inline void ufshcd_rpm_get_noresume(struct ufs_hba *hba)
+{
+	pm_runtime_get_noresume(&hba->ufs_device_wlun->sdev_gendev);
+}
+
+static inline int ufshcd_rpm_resume(struct ufs_hba *hba)
+{
+	return pm_runtime_resume(&hba->ufs_device_wlun->sdev_gendev);
+}
+
+static inline int ufshcd_rpm_put(struct ufs_hba *hba)
+{
+	return pm_runtime_put(&hba->ufs_device_wlun->sdev_gendev);
+}
+
+#endif /* _UFSHCD_PRIV_H_ */
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 5308f43bda6e..da8beed2767c 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -26,7 +26,7 @@
 #include <scsi/scsi_dbg.h>
 #include <scsi/scsi_driver.h>
 #include <scsi/scsi_eh.h>
-#include "ufshcd.h"
+#include "ufshcd-priv.h"
 #include "ufs_quirks.h"
 #include "unipro.h"
 #include "ufs-sysfs.h"
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index ab0c643296c0..16f69ab1b309 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -1007,11 +1007,6 @@ static inline bool ufshcd_is_wb_allowed(struct ufs_hba *hba)
 	return hba->caps & UFSHCD_CAP_WB_EN;
 }
 
-static inline bool ufshcd_is_user_access_allowed(struct ufs_hba *hba)
-{
-	return !hba->shutting_down;
-}
-
 #define ufshcd_writel(hba, val, reg)	\
 	writel((val), (hba)->mmio_base + (reg))
 #define ufshcd_readl(hba, reg)	\
@@ -1075,28 +1070,6 @@ static inline void *ufshcd_get_variant(struct ufs_hba *hba)
 	BUG_ON(!hba);
 	return hba->priv;
 }
-static inline bool ufshcd_keep_autobkops_enabled_except_suspend(
-							struct ufs_hba *hba)
-{
-	return hba->caps & UFSHCD_CAP_KEEP_AUTO_BKOPS_ENABLED_EXCEPT_SUSPEND;
-}
-
-static inline u8 ufshcd_wb_get_query_index(struct ufs_hba *hba)
-{
-	if (hba->dev_info.wb_buffer_type == WB_BUF_MODE_LU_DEDICATED)
-		return hba->dev_info.wb_dedicated_lu;
-	return 0;
-}
-
-#ifdef CONFIG_SCSI_UFS_HWMON
-void ufs_hwmon_probe(struct ufs_hba *hba, u8 mask);
-void ufs_hwmon_remove(struct ufs_hba *hba);
-void ufs_hwmon_notify_event(struct ufs_hba *hba, u8 ee_mask);
-#else
-static inline void ufs_hwmon_probe(struct ufs_hba *hba, u8 mask) {}
-static inline void ufs_hwmon_remove(struct ufs_hba *hba) {}
-static inline void ufs_hwmon_notify_event(struct ufs_hba *hba, u8 ee_mask) {}
-#endif
 
 #ifdef CONFIG_PM
 extern int ufshcd_runtime_suspend(struct device *dev);
@@ -1230,13 +1203,6 @@ int __ufshcd_suspend_prepare(struct device *dev, bool rpm_ok_for_spm);
 void ufshcd_resume_complete(struct device *dev);
 
 /* Wrapper functions for safely calling variant operations */
-static inline const char *ufshcd_get_var_name(struct ufs_hba *hba)
-{
-	if (hba->vops)
-		return hba->vops->name;
-	return "";
-}
-
 static inline int ufshcd_vops_init(struct ufs_hba *hba)
 {
 	if (hba->vops && hba->vops->init)
@@ -1245,61 +1211,6 @@ static inline int ufshcd_vops_init(struct ufs_hba *hba)
 	return 0;
 }
 
-static inline void ufshcd_vops_exit(struct ufs_hba *hba)
-{
-	if (hba->vops && hba->vops->exit)
-		return hba->vops->exit(hba);
-}
-
-static inline u32 ufshcd_vops_get_ufs_hci_version(struct ufs_hba *hba)
-{
-	if (hba->vops && hba->vops->get_ufs_hci_version)
-		return hba->vops->get_ufs_hci_version(hba);
-
-	return ufshcd_readl(hba, REG_UFS_VERSION);
-}
-
-static inline int ufshcd_vops_clk_scale_notify(struct ufs_hba *hba,
-			bool up, enum ufs_notify_change_status status)
-{
-	if (hba->vops && hba->vops->clk_scale_notify)
-		return hba->vops->clk_scale_notify(hba, up, status);
-	return 0;
-}
-
-static inline void ufshcd_vops_event_notify(struct ufs_hba *hba,
-					    enum ufs_event_type evt,
-					    void *data)
-{
-	if (hba->vops && hba->vops->event_notify)
-		hba->vops->event_notify(hba, evt, data);
-}
-
-static inline int ufshcd_vops_setup_clocks(struct ufs_hba *hba, bool on,
-					enum ufs_notify_change_status status)
-{
-	if (hba->vops && hba->vops->setup_clocks)
-		return hba->vops->setup_clocks(hba, on, status);
-	return 0;
-}
-
-static inline int ufshcd_vops_hce_enable_notify(struct ufs_hba *hba,
-						bool status)
-{
-	if (hba->vops && hba->vops->hce_enable_notify)
-		return hba->vops->hce_enable_notify(hba, status);
-
-	return 0;
-}
-static inline int ufshcd_vops_link_startup_notify(struct ufs_hba *hba,
-						bool status)
-{
-	if (hba->vops && hba->vops->link_startup_notify)
-		return hba->vops->link_startup_notify(hba, status);
-
-	return 0;
-}
-
 static inline int ufshcd_vops_phy_initialization(struct ufs_hba *hba)
 {
 	if (hba->vops && hba->vops->phy_initialization)
@@ -1308,102 +1219,8 @@ static inline int ufshcd_vops_phy_initialization(struct ufs_hba *hba)
 	return 0;
 }
 
-static inline int ufshcd_vops_pwr_change_notify(struct ufs_hba *hba,
-				  enum ufs_notify_change_status status,
-				  struct ufs_pa_layer_attr *dev_max_params,
-				  struct ufs_pa_layer_attr *dev_req_params)
-{
-	if (hba->vops && hba->vops->pwr_change_notify)
-		return hba->vops->pwr_change_notify(hba, status,
-					dev_max_params, dev_req_params);
-
-	return -ENOTSUPP;
-}
-
-static inline void ufshcd_vops_setup_task_mgmt(struct ufs_hba *hba,
-					int tag, u8 tm_function)
-{
-	if (hba->vops && hba->vops->setup_task_mgmt)
-		return hba->vops->setup_task_mgmt(hba, tag, tm_function);
-}
-
-static inline void ufshcd_vops_hibern8_notify(struct ufs_hba *hba,
-					enum uic_cmd_dme cmd,
-					enum ufs_notify_change_status status)
-{
-	if (hba->vops && hba->vops->hibern8_notify)
-		return hba->vops->hibern8_notify(hba, cmd, status);
-}
-
-static inline int ufshcd_vops_apply_dev_quirks(struct ufs_hba *hba)
-{
-	if (hba->vops && hba->vops->apply_dev_quirks)
-		return hba->vops->apply_dev_quirks(hba);
-	return 0;
-}
-
-static inline void ufshcd_vops_fixup_dev_quirks(struct ufs_hba *hba)
-{
-	if (hba->vops && hba->vops->fixup_dev_quirks)
-		hba->vops->fixup_dev_quirks(hba);
-}
-
-static inline int ufshcd_vops_suspend(struct ufs_hba *hba, enum ufs_pm_op op,
-				enum ufs_notify_change_status status)
-{
-	if (hba->vops && hba->vops->suspend)
-		return hba->vops->suspend(hba, op, status);
-
-	return 0;
-}
-
-static inline int ufshcd_vops_resume(struct ufs_hba *hba, enum ufs_pm_op op)
-{
-	if (hba->vops && hba->vops->resume)
-		return hba->vops->resume(hba, op);
-
-	return 0;
-}
-
-static inline void ufshcd_vops_dbg_register_dump(struct ufs_hba *hba)
-{
-	if (hba->vops && hba->vops->dbg_register_dump)
-		hba->vops->dbg_register_dump(hba);
-}
-
-static inline int ufshcd_vops_device_reset(struct ufs_hba *hba)
-{
-	if (hba->vops && hba->vops->device_reset)
-		return hba->vops->device_reset(hba);
-
-	return -EOPNOTSUPP;
-}
-
-static inline void ufshcd_vops_config_scaling_param(struct ufs_hba *hba,
-		struct devfreq_dev_profile *p,
-		struct devfreq_simple_ondemand_data *data)
-{
-	if (hba->vops && hba->vops->config_scaling_param)
-		hba->vops->config_scaling_param(hba, p, data);
-}
-
 extern struct ufs_pm_lvl_states ufs_pm_lvl_states[];
 
-/**
- * ufshcd_scsi_to_upiu_lun - maps scsi LUN to UPIU LUN
- * @scsi_lun: scsi LUN id
- *
- * Returns UPIU LUN id
- */
-static inline u8 ufshcd_scsi_to_upiu_lun(unsigned int scsi_lun)
-{
-	if (scsi_is_wlun(scsi_lun))
-		return (scsi_lun & UFS_UPIU_MAX_UNIT_NUM_ID)
-			| UFS_UPIU_WLUN_ID;
-	else
-		return scsi_lun & UFS_UPIU_MAX_UNIT_NUM_ID;
-}
-
 int ufshcd_dump_regs(struct ufs_hba *hba, size_t offset, size_t len,
 		     const char *prefix);
 
@@ -1412,43 +1229,4 @@ int ufshcd_write_ee_control(struct ufs_hba *hba);
 int ufshcd_update_ee_control(struct ufs_hba *hba, u16 *mask, u16 *other_mask,
 			     u16 set, u16 clr);
 
-static inline int ufshcd_update_ee_drv_mask(struct ufs_hba *hba,
-					    u16 set, u16 clr)
-{
-	return ufshcd_update_ee_control(hba, &hba->ee_drv_mask,
-					&hba->ee_usr_mask, set, clr);
-}
-
-static inline int ufshcd_update_ee_usr_mask(struct ufs_hba *hba,
-					    u16 set, u16 clr)
-{
-	return ufshcd_update_ee_control(hba, &hba->ee_usr_mask,
-					&hba->ee_drv_mask, set, clr);
-}
-
-static inline int ufshcd_rpm_get_sync(struct ufs_hba *hba)
-{
-	return pm_runtime_get_sync(&hba->ufs_device_wlun->sdev_gendev);
-}
-
-static inline int ufshcd_rpm_put_sync(struct ufs_hba *hba)
-{
-	return pm_runtime_put_sync(&hba->ufs_device_wlun->sdev_gendev);
-}
-
-static inline void ufshcd_rpm_get_noresume(struct ufs_hba *hba)
-{
-	pm_runtime_get_noresume(&hba->ufs_device_wlun->sdev_gendev);
-}
-
-static inline int ufshcd_rpm_resume(struct ufs_hba *hba)
-{
-	return pm_runtime_resume(&hba->ufs_device_wlun->sdev_gendev);
-}
-
-static inline int ufshcd_rpm_put(struct ufs_hba *hba)
-{
-	return pm_runtime_put(&hba->ufs_device_wlun->sdev_gendev);
-}
-
 #endif /* End of Header */
diff --git a/drivers/scsi/ufs/ufshpb.c b/drivers/scsi/ufs/ufshpb.c
index 5a974642779f..5fae0861b488 100644
--- a/drivers/scsi/ufs/ufshpb.c
+++ b/drivers/scsi/ufs/ufshpb.c
@@ -15,7 +15,7 @@
 #include <linux/module.h>
 #include <scsi/scsi_cmnd.h>
 
-#include "ufshcd.h"
+#include "ufshcd-priv.h"
 #include "ufshpb.h"
 #include "../sd.h"
 

[PATCH v2 27/29] scsi: ufs: Move the struct ufs_ref_clk definition

[Bart Van Assche]

Move the definition of this data structure since it is only used in a
single source file.

Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 drivers/scsi/ufs/ufs.h    | 5 -----
 drivers/scsi/ufs/ufshcd.c | 5 +++++
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/scsi/ufs/ufs.h b/drivers/scsi/ufs/ufs.h
index 225b5b4a2a7e..f52173b8ad96 100644
--- a/drivers/scsi/ufs/ufs.h
+++ b/drivers/scsi/ufs/ufs.h
@@ -415,11 +415,6 @@ enum ufs_ref_clk_freq {
 	REF_CLK_FREQ_INVAL	= -1,
 };
 
-struct ufs_ref_clk {
-	unsigned long freq_hz;
-	enum ufs_ref_clk_freq val;
-};
-
 /* Query response result code */
 enum {
 	QUERY_RESULT_SUCCESS                    = 0x00,
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index da8beed2767c..198bef3eb4b2 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -7959,6 +7959,11 @@ static int ufshcd_device_geo_params_init(struct ufs_hba *hba)
 	return err;
 }
 
+struct ufs_ref_clk {
+	unsigned long freq_hz;
+	enum ufs_ref_clk_freq val;
+};
+
 static struct ufs_ref_clk ufs_ref_clk_freqs[] = {
 	{19200000, REF_CLK_FREQ_19_2_MHZ},
 	{26000000, REF_CLK_FREQ_26_MHZ},

[PATCH v2 28/29] scsi: ufs: Move the ufs_is_valid_unit_desc_lun() definition

[Bart Van Assche]

Move the definition of this function from a public into a private header
file since it is only used inside the UFS core.

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 drivers/scsi/ufs/ufs.h         | 19 -------------------
 drivers/scsi/ufs/ufshcd-priv.h | 19 +++++++++++++++++++
 2 files changed, 19 insertions(+), 19 deletions(-)

diff --git a/drivers/scsi/ufs/ufs.h b/drivers/scsi/ufs/ufs.h
index f52173b8ad96..1bba3fead2ce 100644
--- a/drivers/scsi/ufs/ufs.h
+++ b/drivers/scsi/ufs/ufs.h
@@ -620,23 +620,4 @@ enum ufs_trace_tsf_t {
 	UFS_TSF_CDB, UFS_TSF_OSF, UFS_TSF_TM_INPUT, UFS_TSF_TM_OUTPUT
 };
 
-/**
- * ufs_is_valid_unit_desc_lun - checks if the given LUN has a unit descriptor
- * @dev_info: pointer of instance of struct ufs_dev_info
- * @lun: LU number to check
- * @return: true if the lun has a matching unit descriptor, false otherwise
- */
-static inline bool ufs_is_valid_unit_desc_lun(struct ufs_dev_info *dev_info,
-		u8 lun, u8 param_offset)
-{
-	if (!dev_info || !dev_info->max_lu_supported) {
-		pr_err("Max General LU supported by UFS isn't initialized\n");
-		return false;
-	}
-	/* WB is available only for the logical unit from 0 to 7 */
-	if (param_offset == UNIT_DESC_PARAM_WB_BUF_ALLOC_UNITS)
-		return lun < UFS_UPIU_MAX_WB_LUN_ID;
-	return lun == UFS_UPIU_RPMB_WLUN || (lun < dev_info->max_lu_supported);
-}
-
 #endif /* End of Header */
diff --git a/drivers/scsi/ufs/ufshcd-priv.h b/drivers/scsi/ufs/ufshcd-priv.h
index 3fa8ab94e4e1..38bc77d3dbbd 100644
--- a/drivers/scsi/ufs/ufshcd-priv.h
+++ b/drivers/scsi/ufs/ufshcd-priv.h
@@ -276,4 +276,23 @@ static inline int ufshcd_rpm_put(struct ufs_hba *hba)
 	return pm_runtime_put(&hba->ufs_device_wlun->sdev_gendev);
 }
 
+/**
+ * ufs_is_valid_unit_desc_lun - checks if the given LUN has a unit descriptor
+ * @dev_info: pointer of instance of struct ufs_dev_info
+ * @lun: LU number to check
+ * @return: true if the lun has a matching unit descriptor, false otherwise
+ */
+static inline bool ufs_is_valid_unit_desc_lun(struct ufs_dev_info *dev_info,
+		u8 lun, u8 param_offset)
+{
+	if (!dev_info || !dev_info->max_lu_supported) {
+		pr_err("Max General LU supported by UFS isn't initialized\n");
+		return false;
+	}
+	/* WB is available only for the logical unit from 0 to 7 */
+	if (param_offset == UNIT_DESC_PARAM_WB_BUF_ALLOC_UNITS)
+		return lun < UFS_UPIU_MAX_WB_LUN_ID;
+	return lun == UFS_UPIU_RPMB_WLUN || (lun < dev_info->max_lu_supported);
+}
+
 #endif /* _UFSHCD_PRIV_H_ */

Re: [PATCH v2 28/29] scsi: ufs: Move the ufs_is_valid_unit_desc_lun() definition

[Bean Huo]

On Tue, 2022-04-12 at 11:18 -0700, Bart Van Assche wrote:
> diff --git a/drivers/scsi/ufs/ufshcd-priv.h
> b/drivers/scsi/ufs/ufshcd-priv.h
> index 3fa8ab94e4e1..38bc77d3dbbd 100644
> --- a/drivers/scsi/ufs/ufshcd-priv.h
> +++ b/drivers/scsi/ufs/ufshcd-priv.h
> @@ -276,4 +276,23 @@ static inline int ufshcd_rpm_put(struct ufs_hba
> *hba)
>         return pm_runtime_put(&hba->ufs_device_wlun->sdev_gendev);
>  }
>  
> +/**
> + * ufs_is_valid_unit_desc_lun - checks if the given LUN has a unit
> descriptor
> + * @dev_info: pointer of instance of struct ufs_dev_info
> + * @lun: LU number to check
> + * @return: true if the lun has a matching unit descriptor, false
> otherwise
> + */
> +static inline bool ufs_is_valid_unit_desc_lun(struct ufs_dev_info
> *dev_info,
> +               u8 lun, u8 param_offset)
> +{
> +       if (!dev_info || !dev_info->max_lu_supported) {
> +               pr_err("Max General LU supported by UFS isn't
> initialized\n");
> +               return false;
> +       }
> +       /* WB is available only for the logical unit from 0 to 7 */
> +       if (param_offset == UNIT_DESC_PARAM_WB_BUF_ALLOC_UNITS)
> +               return lun < UFS_UPIU_MAX_WB_LUN_ID;
> +       return lun == UFS_UPIU_RPMB_WLUN || (lun < dev_info-
> >max_lu_supported);
> +}
> +
>  #endif /* _UFSHCD_PRIV_H_ */


You didn't move this function to drivers/ufs/core/ufshcd-priv.h,
It is used by the drivers/ufs/core/ufs-sysfs.c. Otherwise, there is no
problem in compiling.


Kind regards,
Bean

Re: [PATCH v2 28/29] scsi: ufs: Move the ufs_is_valid_unit_desc_lun() definition

[Bart Van Assche]

On 4/19/22 14:00, Bean Huo wrote:
> You didn't move this function to drivers/ufs/core/ufshcd-priv.h,

Hmm ... it is not clear why you wrote the above? I think that the diff 
clearly shows that ufs_is_valid_unit_desc_lun() is moved into 
drivers/scsi/ufs/ufshcd-priv.h.

Thanks,

Bart.

[PATCH v2 29/29] scsi: ufs: Split the drivers/scsi/ufs directory

[Bart Van Assche]

Split the drivers/scsi/ufs directory into a ufs-core and a ufs-drivers
directory. Move shared header files into the include/scsi directory.
This separation makes it clear which header files UFS drivers are allowed
to include (include/scsi/*.h) and which header files UFS drivers are not
allowed to include (drivers/scsi/ufs-core/*.h).

Update the MAINTAINERS file. Add myself as a UFS reviewer.

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 MAINTAINERS                                   |  9 ++-
 drivers/Kconfig                               |  2 +
 drivers/Makefile                              |  1 +
 drivers/scsi/Kconfig                          |  1 -
 drivers/scsi/Makefile                         |  1 -
 drivers/ufs/Kconfig                           | 30 ++++++++
 drivers/ufs/Makefile                          |  5 ++
 drivers/ufs/core/Kconfig                      | 60 +++++++++++++++
 drivers/ufs/core/Makefile                     | 10 +++
 drivers/{scsi/ufs => ufs/core}/ufs-debugfs.c  |  2 +-
 drivers/{scsi/ufs => ufs/core}/ufs-debugfs.h  |  0
 .../ufs => ufs/core}/ufs-fault-injection.c    |  0
 .../ufs => ufs/core}/ufs-fault-injection.h    |  0
 drivers/{scsi/ufs => ufs/core}/ufs-hwmon.c    |  2 +-
 drivers/{scsi/ufs => ufs/core}/ufs-sysfs.c    |  2 +-
 drivers/{scsi/ufs => ufs/core}/ufs-sysfs.h    |  0
 drivers/{scsi/ufs => ufs/core}/ufs_bsg.c      |  2 +-
 drivers/{scsi/ufs => ufs/core}/ufs_bsg.h      |  0
 .../{scsi/ufs => ufs/core}/ufshcd-crypto.c    |  2 +-
 .../{scsi/ufs => ufs/core}/ufshcd-crypto.h    |  4 +-
 drivers/{scsi/ufs => ufs/core}/ufshcd-priv.h  |  2 +-
 drivers/{scsi/ufs => ufs/core}/ufshcd.c       |  4 +-
 drivers/{scsi/ufs => ufs/core}/ufshpb.c       |  2 +-
 drivers/{scsi/ufs => ufs/core}/ufshpb.h       |  0
 drivers/{scsi/ufs => ufs/host}/Kconfig        | 75 +------------------
 drivers/{scsi/ufs => ufs/host}/Makefile       | 12 ---
 drivers/{scsi/ufs => ufs/host}/cdns-pltfrm.c  |  0
 .../{scsi/ufs => ufs/host}/tc-dwc-g210-pci.c  |  2 +-
 .../ufs => ufs/host}/tc-dwc-g210-pltfrm.c     |  0
 drivers/{scsi/ufs => ufs/host}/tc-dwc-g210.c  |  4 +-
 drivers/{scsi/ufs => ufs/host}/tc-dwc-g210.h  |  0
 drivers/{scsi/ufs => ufs/host}/ti-j721e-ufs.c |  0
 drivers/{scsi/ufs => ufs/host}/ufs-exynos.c   |  6 +-
 drivers/{scsi/ufs => ufs/host}/ufs-exynos.h   |  0
 drivers/{scsi/ufs => ufs/host}/ufs-hisi.c     |  8 +-
 drivers/{scsi/ufs => ufs/host}/ufs-hisi.h     |  0
 .../ufs => ufs/host}/ufs-mediatek-trace.h     |  2 +-
 drivers/{scsi/ufs => ufs/host}/ufs-mediatek.c |  6 +-
 drivers/{scsi/ufs => ufs/host}/ufs-mediatek.h |  0
 drivers/{scsi/ufs => ufs/host}/ufs-qcom-ice.c |  0
 drivers/{scsi/ufs => ufs/host}/ufs-qcom.c     |  8 +-
 drivers/{scsi/ufs => ufs/host}/ufs-qcom.h     |  2 +-
 drivers/{scsi/ufs => ufs/host}/ufshcd-dwc.c   |  4 +-
 drivers/{scsi/ufs => ufs/host}/ufshcd-dwc.h   |  2 +-
 drivers/{scsi/ufs => ufs/host}/ufshcd-pci.c   |  2 +-
 .../{scsi/ufs => ufs/host}/ufshcd-pltfrm.c    |  4 +-
 .../{scsi/ufs => ufs/host}/ufshcd-pltfrm.h    |  2 +-
 drivers/{scsi/ufs => ufs/host}/ufshci-dwc.h   |  0
 {drivers/scsi/ufs => include/scsi}/ufs.h      |  0
 .../scsi/ufs => include/scsi}/ufs_quirks.h    |  0
 {drivers/scsi/ufs => include/scsi}/ufshcd.h   |  8 +-
 {drivers/scsi/ufs => include/scsi}/ufshci.h   |  0
 {drivers/scsi/ufs => include/scsi}/unipro.h   |  0
 53 files changed, 155 insertions(+), 133 deletions(-)
 create mode 100644 drivers/ufs/Kconfig
 create mode 100644 drivers/ufs/Makefile
 create mode 100644 drivers/ufs/core/Kconfig
 create mode 100644 drivers/ufs/core/Makefile
 rename drivers/{scsi/ufs => ufs/core}/ufs-debugfs.c (99%)
 rename drivers/{scsi/ufs => ufs/core}/ufs-debugfs.h (100%)
 rename drivers/{scsi/ufs => ufs/core}/ufs-fault-injection.c (100%)
 rename drivers/{scsi/ufs => ufs/core}/ufs-fault-injection.h (100%)
 rename drivers/{scsi/ufs => ufs/core}/ufs-hwmon.c (99%)
 rename drivers/{scsi/ufs => ufs/core}/ufs-sysfs.c (99%)
 rename drivers/{scsi/ufs => ufs/core}/ufs-sysfs.h (100%)
 rename drivers/{scsi/ufs => ufs/core}/ufs_bsg.c (99%)
 rename drivers/{scsi/ufs => ufs/core}/ufs_bsg.h (100%)
 rename drivers/{scsi/ufs => ufs/core}/ufshcd-crypto.c (99%)
 rename drivers/{scsi/ufs => ufs/core}/ufshcd-crypto.h (97%)
 rename drivers/{scsi/ufs => ufs/core}/ufshcd-priv.h (99%)
 rename drivers/{scsi/ufs => ufs/core}/ufshcd.c (99%)
 rename drivers/{scsi/ufs => ufs/core}/ufshpb.c (99%)
 rename drivers/{scsi/ufs => ufs/core}/ufshpb.h (100%)
 rename drivers/{scsi/ufs => ufs/host}/Kconfig (56%)
 rename drivers/{scsi/ufs => ufs/host}/Makefile (56%)
 rename drivers/{scsi/ufs => ufs/host}/cdns-pltfrm.c (100%)
 rename drivers/{scsi/ufs => ufs/host}/tc-dwc-g210-pci.c (99%)
 rename drivers/{scsi/ufs => ufs/host}/tc-dwc-g210-pltfrm.c (100%)
 rename drivers/{scsi/ufs => ufs/host}/tc-dwc-g210.c (99%)
 rename drivers/{scsi/ufs => ufs/host}/tc-dwc-g210.h (100%)
 rename drivers/{scsi/ufs => ufs/host}/ti-j721e-ufs.c (100%)
 rename drivers/{scsi/ufs => ufs/host}/ufs-exynos.c (99%)
 rename drivers/{scsi/ufs => ufs/host}/ufs-exynos.h (100%)
 rename drivers/{scsi/ufs => ufs/host}/ufs-hisi.c (99%)
 rename drivers/{scsi/ufs => ufs/host}/ufs-hisi.h (100%)
 rename drivers/{scsi/ufs => ufs/host}/ufs-mediatek-trace.h (93%)
 rename drivers/{scsi/ufs => ufs/host}/ufs-mediatek.c (99%)
 rename drivers/{scsi/ufs => ufs/host}/ufs-mediatek.h (100%)
 rename drivers/{scsi/ufs => ufs/host}/ufs-qcom-ice.c (100%)
 rename drivers/{scsi/ufs => ufs/host}/ufs-qcom.c (99%)
 rename drivers/{scsi/ufs => ufs/host}/ufs-qcom.h (99%)
 rename drivers/{scsi/ufs => ufs/host}/ufshcd-dwc.c (98%)
 rename drivers/{scsi/ufs => ufs/host}/ufshcd-dwc.h (95%)
 rename drivers/{scsi/ufs => ufs/host}/ufshcd-pci.c (99%)
 rename drivers/{scsi/ufs => ufs/host}/ufshcd-pltfrm.c (99%)
 rename drivers/{scsi/ufs => ufs/host}/ufshcd-pltfrm.h (98%)
 rename drivers/{scsi/ufs => ufs/host}/ufshci-dwc.h (100%)
 rename {drivers/scsi/ufs => include/scsi}/ufs.h (100%)
 rename {drivers/scsi/ufs => include/scsi}/ufs_quirks.h (100%)
 rename {drivers/scsi/ufs => include/scsi}/ufshcd.h (99%)
 rename {drivers/scsi/ufs => include/scsi}/ufshci.h (100%)
 rename {drivers/scsi/ufs => include/scsi}/unipro.h (100%)

diff --git a/MAINTAINERS b/MAINTAINERS
index fd768d43e048..8da66d6b1470 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2547,7 +2547,7 @@ F:	drivers/pci/controller/dwc/pcie-qcom.c
 F:	drivers/phy/qualcomm/
 F:	drivers/power/*/msm*
 F:	drivers/reset/reset-qcom-*
-F:	drivers/scsi/ufs/ufs-qcom*
+F:	drivers/ufs/host/ufs-qcom*
 F:	drivers/spi/spi-geni-qcom.c
 F:	drivers/spi/spi-qcom-qspi.c
 F:	drivers/spi/spi-qup.c
@@ -20198,24 +20198,25 @@ F:	include/linux/visorbus.h
 UNIVERSAL FLASH STORAGE HOST CONTROLLER DRIVER
 R:	Alim Akhtar <alim.akhtar@samsung.com>
 R:	Avri Altman <avri.altman@wdc.com>
+R:	Bart Van Assche <bvanassche@acm.org>
 L:	linux-scsi@vger.kernel.org
 S:	Supported
 F:	Documentation/devicetree/bindings/ufs/
 F:	Documentation/scsi/ufs.rst
-F:	drivers/scsi/ufs/
+F:	drivers/ufs/core/
 
 UNIVERSAL FLASH STORAGE HOST CONTROLLER DRIVER DWC HOOKS
 M:	Pedro Sousa <pedrom.sousa@synopsys.com>
 L:	linux-scsi@vger.kernel.org
 S:	Supported
-F:	drivers/scsi/ufs/*dwc*
+F:	drivers/ufs/host/*dwc*
 
 UNIVERSAL FLASH STORAGE HOST CONTROLLER DRIVER MEDIATEK HOOKS
 M:	Stanley Chu <stanley.chu@mediatek.com>
 L:	linux-scsi@vger.kernel.org
 L:	linux-mediatek@lists.infradead.org (moderated for non-subscribers)
 S:	Maintained
-F:	drivers/scsi/ufs/ufs-mediatek*
+F:	drivers/ufs/host/ufs-mediatek*
 
 UNSORTED BLOCK IMAGES (UBI)
 M:	Richard Weinberger <richard@nod.at>
diff --git a/drivers/Kconfig b/drivers/Kconfig
index 8d6cd5d08722..a7ec388e1848 100644
--- a/drivers/Kconfig
+++ b/drivers/Kconfig
@@ -107,6 +107,8 @@ source "drivers/usb/Kconfig"
 
 source "drivers/mmc/Kconfig"
 
+source "drivers/ufs/Kconfig"
+
 source "drivers/memstick/Kconfig"
 
 source "drivers/leds/Kconfig"
diff --git a/drivers/Makefile b/drivers/Makefile
index 020780b6b4d2..8b4b90202e58 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -128,6 +128,7 @@ obj-$(CONFIG_PM_OPP)		+= opp/
 obj-$(CONFIG_CPU_FREQ)		+= cpufreq/
 obj-$(CONFIG_CPU_IDLE)		+= cpuidle/
 obj-y				+= mmc/
+obj-y				+= ufs/
 obj-$(CONFIG_MEMSTICK)		+= memstick/
 obj-$(CONFIG_NEW_LEDS)		+= leds/
 obj-$(CONFIG_INFINIBAND)	+= infiniband/
diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig
index 6e3a04107bb6..a9fe5152addd 100644
--- a/drivers/scsi/Kconfig
+++ b/drivers/scsi/Kconfig
@@ -500,7 +500,6 @@ source "drivers/scsi/megaraid/Kconfig.megaraid"
 source "drivers/scsi/mpt3sas/Kconfig"
 source "drivers/scsi/mpi3mr/Kconfig"
 source "drivers/scsi/smartpqi/Kconfig"
-source "drivers/scsi/ufs/Kconfig"
 
 config SCSI_HPTIOP
 	tristate "HighPoint RocketRAID 3xxx/4xxx Controller support"
diff --git a/drivers/scsi/Makefile b/drivers/scsi/Makefile
index 19814c26c908..2ad3bc052531 100644
--- a/drivers/scsi/Makefile
+++ b/drivers/scsi/Makefile
@@ -101,7 +101,6 @@ obj-$(CONFIG_MEGARAID_NEWGEN)	+= megaraid/
 obj-$(CONFIG_MEGARAID_SAS)	+= megaraid/
 obj-$(CONFIG_SCSI_MPT3SAS)	+= mpt3sas/
 obj-$(CONFIG_SCSI_MPI3MR)	+= mpi3mr/
-obj-$(CONFIG_SCSI_UFSHCD)	+= ufs/
 obj-$(CONFIG_SCSI_ACARD)	+= atp870u.o
 obj-$(CONFIG_SCSI_SUNESP)	+= esp_scsi.o	sun_esp.o
 obj-$(CONFIG_SCSI_INITIO)	+= initio.o
diff --git a/drivers/ufs/Kconfig b/drivers/ufs/Kconfig
new file mode 100644
index 000000000000..90226f72c158
--- /dev/null
+++ b/drivers/ufs/Kconfig
@@ -0,0 +1,30 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# UFS subsystem configuration
+#
+
+menuconfig SCSI_UFSHCD
+	tristate "Universal Flash Storage Controller"
+	depends on SCSI && SCSI_DMA
+	select PM_DEVFREQ
+	select DEVFREQ_GOV_SIMPLE_ONDEMAND
+	select NLS
+	help
+	  Enables support for UFS (Universal Flash Storage) host controllers.
+	  A UFS host controller is an electronic component that is able to
+	  communicate with a UFS card. UFS host controllers occur in
+	  smartphones, laptops, digital cameras and also in cars.
+	  The kernel module will be called ufshcd.
+
+	  To compile this driver as a module, choose M here and read
+	  <file:Documentation/scsi/ufs.rst>.
+	  However, do not compile this as a module if your root file system
+	  (the one containing the directory /) is located on a UFS device.
+
+if SCSI_UFSHCD
+
+source "drivers/ufs/core/Kconfig"
+
+source "drivers/ufs/host/Kconfig"
+
+endif
diff --git a/drivers/ufs/Makefile b/drivers/ufs/Makefile
new file mode 100644
index 000000000000..5a199ef18d4c
--- /dev/null
+++ b/drivers/ufs/Makefile
@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0
+
+# The link order is important here. ufshcd-core must initialize
+# before vendor drivers.
+obj-$(CONFIG_SCSI_UFSHCD)	+= core/ host/
diff --git a/drivers/ufs/core/Kconfig b/drivers/ufs/core/Kconfig
new file mode 100644
index 000000000000..e11978171403
--- /dev/null
+++ b/drivers/ufs/core/Kconfig
@@ -0,0 +1,60 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Kernel configuration file for the UFS Host Controller core.
+#
+# Copyright (C) 2011-2013 Samsung India Software Operations
+#
+# Authors:
+#	Santosh Yaraganavi <santosh.sy@samsung.com>
+#	Vinayak Holikatti <h.vinayak@samsung.com>
+
+config SCSI_UFS_BSG
+	bool "Universal Flash Storage BSG device node"
+	select BLK_DEV_BSGLIB
+	help
+	  Universal Flash Storage (UFS) is SCSI transport specification for
+	  accessing flash storage on digital cameras, mobile phones and
+	  consumer electronic devices.
+	  A UFS controller communicates with a UFS device by exchanging
+	  UFS Protocol Information Units (UPIUs).
+	  UPIUs can not only be used as a transport layer for the SCSI protocol
+	  but are also used by the UFS native command set.
+	  This transport driver supports exchanging UFS protocol information units
+	  with a UFS device. See also the ufshcd driver, which is a SCSI driver
+	  that supports UFS devices.
+
+	  Select this if you need a bsg device node for your UFS controller.
+	  If unsure, say N.
+
+config SCSI_UFS_CRYPTO
+	bool "UFS Crypto Engine Support"
+	depends on BLK_INLINE_ENCRYPTION
+	help
+	  Enable Crypto Engine Support in UFS.
+	  Enabling this makes it possible for the kernel to use the crypto
+	  capabilities of the UFS device (if present) to perform crypto
+	  operations on data being transferred to/from the device.
+
+config SCSI_UFS_HPB
+	bool "Support UFS Host Performance Booster"
+	help
+	  The UFS HPB feature improves random read performance. It caches
+	  L2P (logical to physical) map of UFS to host DRAM. The driver uses HPB
+	  read command by piggybacking physical page number for bypassing FTL (flash
+	  translation layer)'s L2P address translation.
+
+config SCSI_UFS_FAULT_INJECTION
+	bool "UFS Fault Injection Support"
+	depends on FAULT_INJECTION
+	help
+	  Enable fault injection support in the UFS driver. This makes it easier
+	  to test the UFS error handler and abort handler.
+
+config SCSI_UFS_HWMON
+	bool "UFS Temperature Notification"
+	depends on SCSI_UFSHCD=HWMON || HWMON=y
+	help
+	  This provides support for UFS hardware monitoring. If enabled,
+	  a hardware monitoring device will be created for the UFS device.
+
+	  If unsure, say N.
diff --git a/drivers/ufs/core/Makefile b/drivers/ufs/core/Makefile
new file mode 100644
index 000000000000..62f38c5bf857
--- /dev/null
+++ b/drivers/ufs/core/Makefile
@@ -0,0 +1,10 @@
+# SPDX-License-Identifier: GPL-2.0
+
+obj-$(CONFIG_SCSI_UFSHCD)		+= ufshcd-core.o
+ufshcd-core-y				+= ufshcd.o ufs-sysfs.o
+ufshcd-core-$(CONFIG_DEBUG_FS)		+= ufs-debugfs.o
+ufshcd-core-$(CONFIG_SCSI_UFS_BSG)	+= ufs_bsg.o
+ufshcd-core-$(CONFIG_SCSI_UFS_CRYPTO)	+= ufshcd-crypto.o
+ufshcd-core-$(CONFIG_SCSI_UFS_HPB)	+= ufshpb.o
+ufshcd-core-$(CONFIG_SCSI_UFS_FAULT_INJECTION) += ufs-fault-injection.o
+ufshcd-core-$(CONFIG_SCSI_UFS_HWMON)	+= ufs-hwmon.o
diff --git a/drivers/scsi/ufs/ufs-debugfs.c b/drivers/ufs/core/ufs-debugfs.c
similarity index 99%
rename from drivers/scsi/ufs/ufs-debugfs.c
rename to drivers/ufs/core/ufs-debugfs.c
index c10a8f09682b..e1dce1cad177 100644
--- a/drivers/scsi/ufs/ufs-debugfs.c
+++ b/drivers/ufs/core/ufs-debugfs.c
@@ -4,7 +4,7 @@
 #include <linux/debugfs.h>
 
 #include "ufs-debugfs.h"
-#include "ufshcd.h"
+#include <scsi/ufshcd.h>
 #include "ufshcd-priv.h"
 
 static struct dentry *ufs_debugfs_root;
diff --git a/drivers/scsi/ufs/ufs-debugfs.h b/drivers/ufs/core/ufs-debugfs.h
similarity index 100%
rename from drivers/scsi/ufs/ufs-debugfs.h
rename to drivers/ufs/core/ufs-debugfs.h
diff --git a/drivers/scsi/ufs/ufs-fault-injection.c b/drivers/ufs/core/ufs-fault-injection.c
similarity index 100%
rename from drivers/scsi/ufs/ufs-fault-injection.c
rename to drivers/ufs/core/ufs-fault-injection.c
diff --git a/drivers/scsi/ufs/ufs-fault-injection.h b/drivers/ufs/core/ufs-fault-injection.h
similarity index 100%
rename from drivers/scsi/ufs/ufs-fault-injection.h
rename to drivers/ufs/core/ufs-fault-injection.h
diff --git a/drivers/scsi/ufs/ufs-hwmon.c b/drivers/ufs/core/ufs-hwmon.c
similarity index 99%
rename from drivers/scsi/ufs/ufs-hwmon.c
rename to drivers/ufs/core/ufs-hwmon.c
index c38d9d98a86d..1f1f5c8ab8da 100644
--- a/drivers/scsi/ufs/ufs-hwmon.c
+++ b/drivers/ufs/core/ufs-hwmon.c
@@ -7,7 +7,7 @@
 #include <linux/hwmon.h>
 #include <linux/units.h>
 
-#include "ufshcd.h"
+#include <scsi/ufshcd.h>
 #include "ufshcd-priv.h"
 
 struct ufs_hwmon_data {
diff --git a/drivers/scsi/ufs/ufs-sysfs.c b/drivers/ufs/core/ufs-sysfs.c
similarity index 99%
rename from drivers/scsi/ufs/ufs-sysfs.c
rename to drivers/ufs/core/ufs-sysfs.c
index 8a3c6442f291..840d7b79a857 100644
--- a/drivers/scsi/ufs/ufs-sysfs.c
+++ b/drivers/ufs/core/ufs-sysfs.c
@@ -6,7 +6,7 @@
 #include <linux/bitfield.h>
 #include <asm/unaligned.h>
 
-#include "ufs.h"
+#include <scsi/ufs.h>
 #include "ufs-sysfs.h"
 #include "ufshcd-priv.h"
 
diff --git a/drivers/scsi/ufs/ufs-sysfs.h b/drivers/ufs/core/ufs-sysfs.h
similarity index 100%
rename from drivers/scsi/ufs/ufs-sysfs.h
rename to drivers/ufs/core/ufs-sysfs.h
diff --git a/drivers/scsi/ufs/ufs_bsg.c b/drivers/ufs/core/ufs_bsg.c
similarity index 99%
rename from drivers/scsi/ufs/ufs_bsg.c
rename to drivers/ufs/core/ufs_bsg.c
index 9e9b93867cab..dde7887d261f 100644
--- a/drivers/scsi/ufs/ufs_bsg.c
+++ b/drivers/ufs/core/ufs_bsg.c
@@ -9,7 +9,7 @@
 #include <scsi/scsi.h>
 #include <scsi/scsi_host.h>
 #include "ufs_bsg.h"
-#include "ufshcd.h"
+#include <scsi/ufshcd.h>
 #include "ufshcd-priv.h"
 
 static int ufs_bsg_get_query_desc_size(struct ufs_hba *hba, int *desc_len,
diff --git a/drivers/scsi/ufs/ufs_bsg.h b/drivers/ufs/core/ufs_bsg.h
similarity index 100%
rename from drivers/scsi/ufs/ufs_bsg.h
rename to drivers/ufs/core/ufs_bsg.h
diff --git a/drivers/scsi/ufs/ufshcd-crypto.c b/drivers/ufs/core/ufshcd-crypto.c
similarity index 99%
rename from drivers/scsi/ufs/ufshcd-crypto.c
rename to drivers/ufs/core/ufshcd-crypto.c
index 67402baf6fae..f8f19d8cf4d4 100644
--- a/drivers/scsi/ufs/ufshcd-crypto.c
+++ b/drivers/ufs/core/ufshcd-crypto.c
@@ -3,7 +3,7 @@
  * Copyright 2019 Google LLC
  */
 
-#include "ufshcd.h"
+#include <scsi/ufshcd.h>
 #include "ufshcd-crypto.h"
 
 /* Blk-crypto modes supported by UFS crypto */
diff --git a/drivers/scsi/ufs/ufshcd-crypto.h b/drivers/ufs/core/ufshcd-crypto.h
similarity index 97%
rename from drivers/scsi/ufs/ufshcd-crypto.h
rename to drivers/ufs/core/ufshcd-crypto.h
index 9f98f18f9646..cd4ee661ca96 100644
--- a/drivers/scsi/ufs/ufshcd-crypto.h
+++ b/drivers/ufs/core/ufshcd-crypto.h
@@ -7,9 +7,9 @@
 #define _UFSHCD_CRYPTO_H
 
 #include <scsi/scsi_cmnd.h>
-#include "ufshcd.h"
+#include <scsi/ufshcd.h>
 #include "ufshcd-priv.h"
-#include "ufshci.h"
+#include <scsi/ufshci.h>
 
 #ifdef CONFIG_SCSI_UFS_CRYPTO
 
diff --git a/drivers/scsi/ufs/ufshcd-priv.h b/drivers/ufs/core/ufshcd-priv.h
similarity index 99%
rename from drivers/scsi/ufs/ufshcd-priv.h
rename to drivers/ufs/core/ufshcd-priv.h
index 38bc77d3dbbd..a6ae5b626752 100644
--- a/drivers/scsi/ufs/ufshcd-priv.h
+++ b/drivers/ufs/core/ufshcd-priv.h
@@ -4,7 +4,7 @@
 #define _UFSHCD_PRIV_H_
 
 #include <linux/pm_runtime.h>
-#include "ufshcd.h"
+#include <scsi/ufshcd.h>
 
 static inline bool ufshcd_is_user_access_allowed(struct ufs_hba *hba)
 {
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/ufs/core/ufshcd.c
similarity index 99%
rename from drivers/scsi/ufs/ufshcd.c
rename to drivers/ufs/core/ufshcd.c
index 198bef3eb4b2..0696dc30ea09 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/ufs/core/ufshcd.c
@@ -27,8 +27,8 @@
 #include <scsi/scsi_driver.h>
 #include <scsi/scsi_eh.h>
 #include "ufshcd-priv.h"
-#include "ufs_quirks.h"
-#include "unipro.h"
+#include <scsi/ufs_quirks.h>
+#include <scsi/unipro.h>
 #include "ufs-sysfs.h"
 #include "ufs-debugfs.h"
 #include "ufs-fault-injection.h"
diff --git a/drivers/scsi/ufs/ufshpb.c b/drivers/ufs/core/ufshpb.c
similarity index 99%
rename from drivers/scsi/ufs/ufshpb.c
rename to drivers/ufs/core/ufshpb.c
index 5fae0861b488..791f0bce11bb 100644
--- a/drivers/scsi/ufs/ufshpb.c
+++ b/drivers/ufs/core/ufshpb.c
@@ -17,7 +17,7 @@
 
 #include "ufshcd-priv.h"
 #include "ufshpb.h"
-#include "../sd.h"
+#include "../../scsi/sd.h"
 
 #define ACTIVATION_THRESHOLD 8 /* 8 IOs */
 #define READ_TO_MS 1000
diff --git a/drivers/scsi/ufs/ufshpb.h b/drivers/ufs/core/ufshpb.h
similarity index 100%
rename from drivers/scsi/ufs/ufshpb.h
rename to drivers/ufs/core/ufshpb.h
diff --git a/drivers/scsi/ufs/Kconfig b/drivers/ufs/host/Kconfig
similarity index 56%
rename from drivers/scsi/ufs/Kconfig
rename to drivers/ufs/host/Kconfig
index 393b9a01da36..82590224da13 100644
--- a/drivers/scsi/ufs/Kconfig
+++ b/drivers/ufs/host/Kconfig
@@ -1,6 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0+
 #
-# Kernel configuration file for the UFS Host Controller
+# Kernel configuration file for the UFS host controller drivers.
 #
 # Copyright (C) 2011-2013 Samsung India Software Operations
 #
@@ -8,26 +8,6 @@
 #	Santosh Yaraganavi <santosh.sy@samsung.com>
 #	Vinayak Holikatti <h.vinayak@samsung.com>
 
-config SCSI_UFSHCD
-	tristate "Universal Flash Storage Controller Driver Core"
-	depends on SCSI && SCSI_DMA
-	select PM_DEVFREQ
-	select DEVFREQ_GOV_SIMPLE_ONDEMAND
-	select NLS
-	help
-	  This selects the support for UFS devices in Linux, say Y and make
-	  sure that you know the name of your UFS host adapter (the card
-	  inside your computer that "speaks" the UFS protocol, also
-	  called UFS Host Controller), because you will be asked for it.
-	  The module will be called ufshcd.
-
-	  To compile this driver as a module, choose M here and read
-	  <file:Documentation/scsi/ufs.rst>.
-	  However, do not compile this as a module if your root file system
-	  (the one containing the directory /) is located on a UFS device.
-
-if SCSI_UFSHCD
-
 config SCSI_UFSHCD_PCI
 	tristate "PCI bus based UFS Controller support"
 	depends on PCI
@@ -122,24 +102,6 @@ config SCSI_UFS_TI_J721E
 	  Selects this if you have TI platform with UFS controller.
 	  If unsure, say N.
 
-config SCSI_UFS_BSG
-	bool "Universal Flash Storage BSG device node"
-	select BLK_DEV_BSGLIB
-	help
-	  Universal Flash Storage (UFS) is SCSI transport specification for
-	  accessing flash storage on digital cameras, mobile phones and
-	  consumer electronic devices.
-	  A UFS controller communicates with a UFS device by exchanging
-	  UFS Protocol Information Units (UPIUs).
-	  UPIUs can not only be used as a transport layer for the SCSI protocol
-	  but are also used by the UFS native command set.
-	  This transport driver supports exchanging UFS protocol information units
-	  with a UFS device. See also the ufshcd driver, which is a SCSI driver
-	  that supports UFS devices.
-
-	  Select this if you need a bsg device node for your UFS controller.
-	  If unsure, say N.
-
 config SCSI_UFS_EXYNOS
 	tristate "Exynos specific hooks to UFS controller platform driver"
 	depends on SCSI_UFSHCD_PLATFORM && (ARCH_EXYNOS || COMPILE_TEST)
@@ -150,38 +112,3 @@ config SCSI_UFS_EXYNOS
 
 	  Select this if you have UFS host controller on Samsung Exynos SoC.
 	  If unsure, say N.
-
-config SCSI_UFS_CRYPTO
-	bool "UFS Crypto Engine Support"
-	depends on BLK_INLINE_ENCRYPTION
-	help
-	  Enable Crypto Engine Support in UFS.
-	  Enabling this makes it possible for the kernel to use the crypto
-	  capabilities of the UFS device (if present) to perform crypto
-	  operations on data being transferred to/from the device.
-
-config SCSI_UFS_HPB
-	bool "Support UFS Host Performance Booster"
-	help
-	  The UFS HPB feature improves random read performance. It caches
-	  L2P (logical to physical) map of UFS to host DRAM. The driver uses HPB
-	  read command by piggybacking physical page number for bypassing FTL (flash
-	  translation layer)'s L2P address translation.
-
-config SCSI_UFS_FAULT_INJECTION
-	bool "UFS Fault Injection Support"
-	depends on FAULT_INJECTION
-	help
-	  Enable fault injection support in the UFS driver. This makes it easier
-	  to test the UFS error handler and abort handler.
-
-config SCSI_UFS_HWMON
-	bool "UFS Temperature Notification"
-	depends on SCSI_UFSHCD=HWMON || HWMON=y
-	help
-	  This provides support for UFS hardware monitoring. If enabled,
-	  a hardware monitoring device will be created for the UFS device.
-
-	  If unsure, say N.
-
-endif
diff --git a/drivers/scsi/ufs/Makefile b/drivers/ufs/host/Makefile
similarity index 56%
rename from drivers/scsi/ufs/Makefile
rename to drivers/ufs/host/Makefile
index 966048875b50..e4be54273c98 100644
--- a/drivers/scsi/ufs/Makefile
+++ b/drivers/ufs/host/Makefile
@@ -1,16 +1,4 @@
 # SPDX-License-Identifier: GPL-2.0
-# UFSHCD makefile
-
-# The link order is important here. ufshcd-core must initialize
-# before vendor drivers.
-obj-$(CONFIG_SCSI_UFSHCD)		+= ufshcd-core.o
-ufshcd-core-y				+= ufshcd.o ufs-sysfs.o
-ufshcd-core-$(CONFIG_DEBUG_FS)		+= ufs-debugfs.o
-ufshcd-core-$(CONFIG_SCSI_UFS_BSG)	+= ufs_bsg.o
-ufshcd-core-$(CONFIG_SCSI_UFS_CRYPTO)	+= ufshcd-crypto.o
-ufshcd-core-$(CONFIG_SCSI_UFS_HPB)	+= ufshpb.o
-ufshcd-core-$(CONFIG_SCSI_UFS_FAULT_INJECTION) += ufs-fault-injection.o
-ufshcd-core-$(CONFIG_SCSI_UFS_HWMON) += ufs-hwmon.o
 
 obj-$(CONFIG_SCSI_UFS_DWC_TC_PCI) += tc-dwc-g210-pci.o ufshcd-dwc.o tc-dwc-g210.o
 obj-$(CONFIG_SCSI_UFS_DWC_TC_PLATFORM) += tc-dwc-g210-pltfrm.o ufshcd-dwc.o tc-dwc-g210.o
diff --git a/drivers/scsi/ufs/cdns-pltfrm.c b/drivers/ufs/host/cdns-pltfrm.c
similarity index 100%
rename from drivers/scsi/ufs/cdns-pltfrm.c
rename to drivers/ufs/host/cdns-pltfrm.c
diff --git a/drivers/scsi/ufs/tc-dwc-g210-pci.c b/drivers/ufs/host/tc-dwc-g210-pci.c
similarity index 99%
rename from drivers/scsi/ufs/tc-dwc-g210-pci.c
rename to drivers/ufs/host/tc-dwc-g210-pci.c
index e635c211c783..22f581a71230 100644
--- a/drivers/scsi/ufs/tc-dwc-g210-pci.c
+++ b/drivers/ufs/host/tc-dwc-g210-pci.c
@@ -7,7 +7,7 @@
  * Authors: Joao Pinto <jpinto@synopsys.com>
  */
 
-#include "ufshcd.h"
+#include <scsi/ufshcd.h>
 #include "ufshcd-dwc.h"
 #include "tc-dwc-g210.h"
 
diff --git a/drivers/scsi/ufs/tc-dwc-g210-pltfrm.c b/drivers/ufs/host/tc-dwc-g210-pltfrm.c
similarity index 100%
rename from drivers/scsi/ufs/tc-dwc-g210-pltfrm.c
rename to drivers/ufs/host/tc-dwc-g210-pltfrm.c
diff --git a/drivers/scsi/ufs/tc-dwc-g210.c b/drivers/ufs/host/tc-dwc-g210.c
similarity index 99%
rename from drivers/scsi/ufs/tc-dwc-g210.c
rename to drivers/ufs/host/tc-dwc-g210.c
index 7ef67c9fc5b8..9c89f0accd82 100644
--- a/drivers/scsi/ufs/tc-dwc-g210.c
+++ b/drivers/ufs/host/tc-dwc-g210.c
@@ -9,8 +9,8 @@
 
 #include <linux/module.h>
 
-#include "ufshcd.h"
-#include "unipro.h"
+#include <scsi/ufshcd.h>
+#include <scsi/unipro.h>
 
 #include "ufshcd-dwc.h"
 #include "ufshci-dwc.h"
diff --git a/drivers/scsi/ufs/tc-dwc-g210.h b/drivers/ufs/host/tc-dwc-g210.h
similarity index 100%
rename from drivers/scsi/ufs/tc-dwc-g210.h
rename to drivers/ufs/host/tc-dwc-g210.h
diff --git a/drivers/scsi/ufs/ti-j721e-ufs.c b/drivers/ufs/host/ti-j721e-ufs.c
similarity index 100%
rename from drivers/scsi/ufs/ti-j721e-ufs.c
rename to drivers/ufs/host/ti-j721e-ufs.c
diff --git a/drivers/scsi/ufs/ufs-exynos.c b/drivers/ufs/host/ufs-exynos.c
similarity index 99%
rename from drivers/scsi/ufs/ufs-exynos.c
rename to drivers/ufs/host/ufs-exynos.c
index ddb2d42605c5..10f9d9ff84da 100644
--- a/drivers/scsi/ufs/ufs-exynos.c
+++ b/drivers/ufs/host/ufs-exynos.c
@@ -18,10 +18,10 @@
 #include <linux/platform_device.h>
 #include <linux/regmap.h>
 
-#include "ufshcd.h"
+#include <scsi/ufshcd.h>
 #include "ufshcd-pltfrm.h"
-#include "ufshci.h"
-#include "unipro.h"
+#include <scsi/ufshci.h>
+#include <scsi/unipro.h>
 
 #include "ufs-exynos.h"
 
diff --git a/drivers/scsi/ufs/ufs-exynos.h b/drivers/ufs/host/ufs-exynos.h
similarity index 100%
rename from drivers/scsi/ufs/ufs-exynos.h
rename to drivers/ufs/host/ufs-exynos.h
diff --git a/drivers/scsi/ufs/ufs-hisi.c b/drivers/ufs/host/ufs-hisi.c
similarity index 99%
rename from drivers/scsi/ufs/ufs-hisi.c
rename to drivers/ufs/host/ufs-hisi.c
index 7046143063ee..3c7dfdcede26 100644
--- a/drivers/scsi/ufs/ufs-hisi.c
+++ b/drivers/ufs/host/ufs-hisi.c
@@ -15,12 +15,12 @@
 #include <linux/platform_device.h>
 #include <linux/reset.h>
 
-#include "ufshcd.h"
+#include <scsi/ufshcd.h>
 #include "ufshcd-pltfrm.h"
-#include "unipro.h"
+#include <scsi/unipro.h>
 #include "ufs-hisi.h"
-#include "ufshci.h"
-#include "ufs_quirks.h"
+#include <scsi/ufshci.h>
+#include <scsi/ufs_quirks.h>
 
 static int ufs_hisi_check_hibern8(struct ufs_hba *hba)
 {
diff --git a/drivers/scsi/ufs/ufs-hisi.h b/drivers/ufs/host/ufs-hisi.h
similarity index 100%
rename from drivers/scsi/ufs/ufs-hisi.h
rename to drivers/ufs/host/ufs-hisi.h
diff --git a/drivers/scsi/ufs/ufs-mediatek-trace.h b/drivers/ufs/host/ufs-mediatek-trace.h
similarity index 93%
rename from drivers/scsi/ufs/ufs-mediatek-trace.h
rename to drivers/ufs/host/ufs-mediatek-trace.h
index 895e82ea6ece..7e010848dc99 100644
--- a/drivers/scsi/ufs/ufs-mediatek-trace.h
+++ b/drivers/ufs/host/ufs-mediatek-trace.h
@@ -31,6 +31,6 @@ TRACE_EVENT(ufs_mtk_event,
 
 #undef TRACE_INCLUDE_PATH
 #undef TRACE_INCLUDE_FILE
-#define TRACE_INCLUDE_PATH ../../drivers/scsi/ufs/
+#define TRACE_INCLUDE_PATH ../../drivers/ufs/host
 #define TRACE_INCLUDE_FILE ufs-mediatek-trace
 #include <trace/define_trace.h>
diff --git a/drivers/scsi/ufs/ufs-mediatek.c b/drivers/ufs/host/ufs-mediatek.c
similarity index 99%
rename from drivers/scsi/ufs/ufs-mediatek.c
rename to drivers/ufs/host/ufs-mediatek.c
index 083d6bd4d561..06bcf81490bd 100644
--- a/drivers/scsi/ufs/ufs-mediatek.c
+++ b/drivers/ufs/host/ufs-mediatek.c
@@ -21,10 +21,10 @@
 #include <linux/sched/clock.h>
 #include <linux/soc/mediatek/mtk_sip_svc.h>
 
-#include "ufshcd.h"
+#include <scsi/ufshcd.h>
 #include "ufshcd-pltfrm.h"
-#include "ufs_quirks.h"
-#include "unipro.h"
+#include <scsi/ufs_quirks.h>
+#include <scsi/unipro.h>
 #include "ufs-mediatek.h"
 
 #define CREATE_TRACE_POINTS
diff --git a/drivers/scsi/ufs/ufs-mediatek.h b/drivers/ufs/host/ufs-mediatek.h
similarity index 100%
rename from drivers/scsi/ufs/ufs-mediatek.h
rename to drivers/ufs/host/ufs-mediatek.h
diff --git a/drivers/scsi/ufs/ufs-qcom-ice.c b/drivers/ufs/host/ufs-qcom-ice.c
similarity index 100%
rename from drivers/scsi/ufs/ufs-qcom-ice.c
rename to drivers/ufs/host/ufs-qcom-ice.c
diff --git a/drivers/scsi/ufs/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c
similarity index 99%
rename from drivers/scsi/ufs/ufs-qcom.c
rename to drivers/ufs/host/ufs-qcom.c
index a63844961222..ef12c8a42642 100644
--- a/drivers/scsi/ufs/ufs-qcom.c
+++ b/drivers/ufs/host/ufs-qcom.c
@@ -15,12 +15,12 @@
 #include <linux/reset-controller.h>
 #include <linux/devfreq.h>
 
-#include "ufshcd.h"
+#include <scsi/ufshcd.h>
 #include "ufshcd-pltfrm.h"
-#include "unipro.h"
+#include <scsi/unipro.h>
 #include "ufs-qcom.h"
-#include "ufshci.h"
-#include "ufs_quirks.h"
+#include <scsi/ufshci.h>
+#include <scsi/ufs_quirks.h>
 
 #define UFS_QCOM_DEFAULT_DBG_PRINT_EN	\
 	(UFS_QCOM_DBG_PRINT_REGS_EN | UFS_QCOM_DBG_PRINT_TEST_BUS_EN)
diff --git a/drivers/scsi/ufs/ufs-qcom.h b/drivers/ufs/host/ufs-qcom.h
similarity index 99%
rename from drivers/scsi/ufs/ufs-qcom.h
rename to drivers/ufs/host/ufs-qcom.h
index 771bc95d02c7..ad70d425c544 100644
--- a/drivers/scsi/ufs/ufs-qcom.h
+++ b/drivers/ufs/host/ufs-qcom.h
@@ -7,7 +7,7 @@
 
 #include <linux/reset-controller.h>
 #include <linux/reset.h>
-#include "ufshcd.h"
+#include <scsi/ufshcd.h>
 
 #define MAX_UFS_QCOM_HOSTS	1
 #define MAX_U32                 (~(u32)0)
diff --git a/drivers/scsi/ufs/ufshcd-dwc.c b/drivers/ufs/host/ufshcd-dwc.c
similarity index 98%
rename from drivers/scsi/ufs/ufshcd-dwc.c
rename to drivers/ufs/host/ufshcd-dwc.c
index a57973c8d2a1..ccaaae348a37 100644
--- a/drivers/scsi/ufs/ufshcd-dwc.c
+++ b/drivers/ufs/host/ufshcd-dwc.c
@@ -9,8 +9,8 @@
 
 #include <linux/module.h>
 
-#include "ufshcd.h"
-#include "unipro.h"
+#include <scsi/ufshcd.h>
+#include <scsi/unipro.h>
 
 #include "ufshcd-dwc.h"
 #include "ufshci-dwc.h"
diff --git a/drivers/scsi/ufs/ufshcd-dwc.h b/drivers/ufs/host/ufshcd-dwc.h
similarity index 95%
rename from drivers/scsi/ufs/ufshcd-dwc.h
rename to drivers/ufs/host/ufshcd-dwc.h
index 43b70794e24f..3195002f6692 100644
--- a/drivers/scsi/ufs/ufshcd-dwc.h
+++ b/drivers/ufs/host/ufshcd-dwc.h
@@ -10,7 +10,7 @@
 #ifndef _UFSHCD_DWC_H
 #define _UFSHCD_DWC_H
 
-#include "ufshcd.h"
+#include <scsi/ufshcd.h>
 
 struct ufshcd_dme_attr_val {
 	u32 attr_sel;
diff --git a/drivers/scsi/ufs/ufshcd-pci.c b/drivers/ufs/host/ufshcd-pci.c
similarity index 99%
rename from drivers/scsi/ufs/ufshcd-pci.c
rename to drivers/ufs/host/ufshcd-pci.c
index 5fe30dcf98b4..a9db5fbc2c70 100644
--- a/drivers/scsi/ufs/ufshcd-pci.c
+++ b/drivers/ufs/host/ufshcd-pci.c
@@ -9,7 +9,7 @@
  *	Vinayak Holikatti <h.vinayak@samsung.com>
  */
 
-#include "ufshcd.h"
+#include <scsi/ufshcd.h>
 #include <linux/delay.h>
 #include <linux/module.h>
 #include <linux/pci.h>
diff --git a/drivers/scsi/ufs/ufshcd-pltfrm.c b/drivers/ufs/host/ufshcd-pltfrm.c
similarity index 99%
rename from drivers/scsi/ufs/ufshcd-pltfrm.c
rename to drivers/ufs/host/ufshcd-pltfrm.c
index f5313f407617..81cf0789c8ad 100644
--- a/drivers/scsi/ufs/ufshcd-pltfrm.c
+++ b/drivers/ufs/host/ufshcd-pltfrm.c
@@ -13,9 +13,9 @@
 #include <linux/pm_runtime.h>
 #include <linux/of.h>
 
-#include "ufshcd.h"
+#include <scsi/ufshcd.h>
 #include "ufshcd-pltfrm.h"
-#include "unipro.h"
+#include <scsi/unipro.h>
 
 #define UFSHCD_DEFAULT_LANES_PER_DIRECTION		2
 
diff --git a/drivers/scsi/ufs/ufshcd-pltfrm.h b/drivers/ufs/host/ufshcd-pltfrm.h
similarity index 98%
rename from drivers/scsi/ufs/ufshcd-pltfrm.h
rename to drivers/ufs/host/ufshcd-pltfrm.h
index c33e28ac6ef6..63cb306ed0ac 100644
--- a/drivers/scsi/ufs/ufshcd-pltfrm.h
+++ b/drivers/ufs/host/ufshcd-pltfrm.h
@@ -5,7 +5,7 @@
 #ifndef UFSHCD_PLTFRM_H_
 #define UFSHCD_PLTFRM_H_
 
-#include "ufshcd.h"
+#include <scsi/ufshcd.h>
 
 #define UFS_PWM_MODE 1
 #define UFS_HS_MODE  2
diff --git a/drivers/scsi/ufs/ufshci-dwc.h b/drivers/ufs/host/ufshci-dwc.h
similarity index 100%
rename from drivers/scsi/ufs/ufshci-dwc.h
rename to drivers/ufs/host/ufshci-dwc.h
diff --git a/drivers/scsi/ufs/ufs.h b/include/scsi/ufs.h
similarity index 100%
rename from drivers/scsi/ufs/ufs.h
rename to include/scsi/ufs.h
diff --git a/drivers/scsi/ufs/ufs_quirks.h b/include/scsi/ufs_quirks.h
similarity index 100%
rename from drivers/scsi/ufs/ufs_quirks.h
rename to include/scsi/ufs_quirks.h
diff --git a/drivers/scsi/ufs/ufshcd.h b/include/scsi/ufshcd.h
similarity index 99%
rename from drivers/scsi/ufs/ufshcd.h
rename to include/scsi/ufshcd.h
index 16f69ab1b309..f7f5fe0a4a9f 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/include/scsi/ufshcd.h
@@ -18,10 +18,10 @@
 #include <linux/devfreq.h>
 #include <linux/pm_runtime.h>
 #include <scsi/scsi_device.h>
-#include "unipro.h"
-#include "ufs.h"
-#include "ufs_quirks.h"
-#include "ufshci.h"
+#include <scsi/unipro.h>
+#include <scsi/ufs.h>
+#include <scsi/ufs_quirks.h>
+#include <scsi/ufshci.h>
 
 #define UFSHCD "ufshcd"
 
diff --git a/drivers/scsi/ufs/ufshci.h b/include/scsi/ufshci.h
similarity index 100%
rename from drivers/scsi/ufs/ufshci.h
rename to include/scsi/ufshci.h
diff --git a/drivers/scsi/ufs/unipro.h b/include/scsi/unipro.h
similarity index 100%
rename from drivers/scsi/ufs/unipro.h
rename to include/scsi/unipro.h

Re: [PATCH v2 29/29] scsi: ufs: Split the drivers/scsi/ufs directory

[Bart Van Assche]

On 4/12/22 11:32, Bart Van Assche wrote:
> Split the drivers/scsi/ufs directory into a ufs-core and a ufs-drivers
> directory. Move shared header files into the include/scsi directory.
> This separation makes it clear which header files UFS drivers are allowed
> to include (include/scsi/*.h) and which header files UFS drivers are not
> allowed to include (drivers/scsi/ufs-core/*.h).
> 
> Update the MAINTAINERS file. Add myself as a UFS reviewer.

Can anyone help with reviewing this patch?

Thanks,

Bart.

Re: [PATCH v2 29/29] scsi: ufs: Split the drivers/scsi/ufs directory

[Bean Huo]

On Mon, 2022-04-18 at 10:11 -0700, Bart Van Assche wrote:
> Can anyone help with reviewing this patch?
> 
> Thanks,
> 
> Bart.

Bart,
Looks good to us, but we need to verify it on the two platforms, and
need some time before add reviewed and tested tag.

Kind regards,
Bean 

Re: [PATCH v2 29/29] scsi: ufs: Split the drivers/scsi/ufs directory

[Bart Van Assche]

On 4/19/22 01:25, Bean Huo wrote:
> Looks good to us, but we need to verify it on the two platforms, and
> need some time before add reviewed and tested tag.

Thanks for the feedback. I will move this patch to a future patch series 
such that it does not block merging of the previous patches in this series.

Thanks,

Bart.

RE: [PATCH v2 04/29] scsi: ufs: Simplify statements that return a boolean

[Keoseong Park]

Hi Bart,

>Convert "if (expr) return true; else return false;" into "return expr;"
>if either 'expr' is a boolean expression or the return type of the
>function is 'bool'.

How about adding ufshcd_is_pwr_mode_restore_needed()?

Best Regards,
Keoseong Park

>
>Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
>Signed-off-by: Bart Van Assche <bvanassche@acm.org>
>---
> drivers/scsi/ufs/ufs-qcom.h |  5 +----
> drivers/scsi/ufs/ufshcd.c   | 22 +++++-----------------
> drivers/scsi/ufs/ufshpb.c   |  8 ++------
> 3 files changed, 8 insertions(+), 27 deletions(-)
>
>diff --git a/drivers/scsi/ufs/ufs-qcom.h b/drivers/scsi/ufs/ufs-qcom.h
>index 8208e3a3ef59..51570224a6e2 100644
>--- a/drivers/scsi/ufs/ufs-qcom.h
>+++ b/drivers/scsi/ufs/ufs-qcom.h
>@@ -239,10 +239,7 @@ int ufs_qcom_testbus_config(struct ufs_qcom_host *host);
> 
> static inline bool ufs_qcom_cap_qunipro(struct ufs_qcom_host *host)
> {
>-	if (host->caps & UFS_QCOM_CAP_QUNIPRO)
>-		return true;
>-	else
>-		return false;
>+	return host->caps & UFS_QCOM_CAP_QUNIPRO;
> }
> 
> /* ufs-qcom-ice.c */
>diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
>index 983fac14b7cd..c60519372b3b 100644
>--- a/drivers/scsi/ufs/ufshcd.c
>+++ b/drivers/scsi/ufs/ufshcd.c
>@@ -939,10 +939,7 @@ static bool ufshcd_is_unipro_pa_params_tuning_req(struct ufs_hba *hba)
> 	 * logic simple, we will only do manual tuning if local unipro version
> 	 * doesn't support ver1.6 or later.
> 	 */
>-	if (ufshcd_get_local_unipro_ver(hba) < UFS_UNIPRO_VER_1_6)
>-		return true;
>-	else
>-		return false;
>+	return ufshcd_get_local_unipro_ver(hba) < UFS_UNIPRO_VER_1_6;
> }
> 
> /**
>@@ -2216,10 +2213,7 @@ static inline int ufshcd_hba_capabilities(struct ufs_hba *hba)
>  */
> static inline bool ufshcd_ready_for_uic_cmd(struct ufs_hba *hba)
> {
>-	if (ufshcd_readl(hba, REG_CONTROLLER_STATUS) & UIC_COMMAND_READY)
>-		return true;
>-	else
>-		return false;
>+	return ufshcd_readl(hba, REG_CONTROLLER_STATUS) & UIC_COMMAND_READY;
> }
> 
> /**
>@@ -5781,10 +5775,7 @@ static bool ufshcd_wb_presrv_usrspc_keep_vcc_on(struct ufs_hba *hba,
> 		return false;
> 	}
> 	/* Let it continue to flush when available buffer exceeds threshold */
>-	if (avail_buf < hba->vps->wb_flush_threshold)
>-		return true;
>-
>-	return false;
>+	return avail_buf < hba->vps->wb_flush_threshold;
> }
> 
> static void ufshcd_wb_force_disable(struct ufs_hba *hba)
>@@ -5863,11 +5854,8 @@ static bool ufshcd_wb_need_flush(struct ufs_hba *hba)
> 		return false;
> 	}
> 
>-	if (!hba->dev_info.b_presrv_uspc_en) {
>-		if (avail_buf <= UFS_WB_BUF_REMAIN_PERCENT(10))
>-			return true;
>-		return false;
>-	}
>+	if (!hba->dev_info.b_presrv_uspc_en)
>+		return avail_buf <= UFS_WB_BUF_REMAIN_PERCENT(10);
> 
> 	return ufshcd_wb_presrv_usrspc_keep_vcc_on(hba, avail_buf);
> }
>diff --git a/drivers/scsi/ufs/ufshpb.c b/drivers/scsi/ufs/ufshpb.c
>index b2bec19022cd..ebd8fc8fc109 100644
>--- a/drivers/scsi/ufs/ufshpb.c
>+++ b/drivers/scsi/ufs/ufshpb.c
>@@ -90,12 +90,8 @@ static bool ufshpb_is_general_lun(int lun)
> 
> static bool ufshpb_is_pinned_region(struct ufshpb_lu *hpb, int rgn_idx)
> {
>-	if (hpb->lu_pinned_end != PINNED_NOT_SET &&
>-	    rgn_idx >= hpb->lu_pinned_start &&
>-	    rgn_idx <= hpb->lu_pinned_end)
>-		return true;
>-
>-	return false;
>+	return hpb->lu_pinned_end != PINNED_NOT_SET &&
>+	       rgn_idx >= hpb->lu_pinned_start && rgn_idx <= hpb->lu_pinned_end;
> }
> 
> static void ufshpb_kick_map_work(struct ufshpb_lu *hpb)
>

Re: [PATCH v2 04/29] scsi: ufs: Simplify statements that return a boolean

[Bart Van Assche]

On 4/12/22 19:33, Keoseong Park wrote:
> Hi Bart,
> 
>> Convert "if (expr) return true; else return false;" into "return expr;"
>> if either 'expr' is a boolean expression or the return type of the
>> function is 'bool'.
> 
> How about adding ufshcd_is_pwr_mode_restore_needed()?

Hi Keoseong,

I'd like to keep that function as-is because it has three return 
statements instead of two.

Thanks,

Bart.

RE: [PATCH v2 04/29] scsi: ufs: Simplify statements that return a boolean

[Keoseong Park]

>On 4/12/22 19:33, Keoseong Park wrote:
>> Hi Bart,
>> 
>>> Convert "if (expr) return true; else return false;" into "return expr;"
>>> if either 'expr' is a boolean expression or the return type of the
>>> function is 'bool'.
>> 
>> How about adding ufshcd_is_pwr_mode_restore_needed()?
>
>Hi Keoseong,
>
>I'd like to keep that function as-is because it has three return 
>statements instead of two.
>
>Thanks,
>
>Bart.

I get it.

Reviewed-by: Keoseong Park <keosung.park@samsung.com>

Best Regards,
Keoseong Park