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Date: Tue, 09 Mar 2021 12:02:47 +0000
From: Caleb Connolly <caleb@...nolly.tech>
To: caleb@...nolly.tech, Alim Akhtar <alim.akhtar@...sung.com>,
Avri Altman <avri.altman@....com>,
"James E.J. Bottomley" <jejb@...ux.ibm.com>,
"Martin K. Petersen" <martin.petersen@...cle.com>
Cc: ejb@...ux.ibm.com, stanley.chu@...iatek.com, cang@...eaurora.org,
beanhuo@...ron.com, jaegeuk@...nel.org, asutoshd@...eaurora.org,
linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
Christoph Hellwig <hch@....de>
Subject: [RESEND PATCH v2 1/3] scsi: ufshcd: use a function to calculate versions
Update the driver to use a function for referencing the UFS version.
This replaces the UFSHCI_VERSION_xy macros, and supports comparisons
where they did not.
Suggested-by: Christoph Hellwig <hch@....de>
Signed-off-by: Caleb Connolly <caleb@...nolly.tech>
---
drivers/scsi/ufs/ufshcd.c | 64 +++++++++++++++++----------------------
drivers/scsi/ufs/ufshci.h | 17 ++++++-----
2 files changed, 37 insertions(+), 44 deletions(-)
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 77161750c9fb..f4d4b885d4df 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -669,23 +669,12 @@ int ufshcd_wait_for_register(struct ufs_hba *hba, u32 reg, u32 mask,
*/
static inline u32 ufshcd_get_intr_mask(struct ufs_hba *hba)
{
- u32 intr_mask = 0;
+ if (hba->ufs_version == ufshci_version(1, 0))
+ return INTERRUPT_MASK_ALL_VER_10;
+ if (hba->ufs_version <= ufshci_version(2, 0))
+ return INTERRUPT_MASK_ALL_VER_11;
- switch (hba->ufs_version) {
- case UFSHCI_VERSION_10:
- intr_mask = INTERRUPT_MASK_ALL_VER_10;
- break;
- case UFSHCI_VERSION_11:
- case UFSHCI_VERSION_20:
- intr_mask = INTERRUPT_MASK_ALL_VER_11;
- break;
- case UFSHCI_VERSION_21:
- default:
- intr_mask = INTERRUPT_MASK_ALL_VER_21;
- break;
- }
-
- return intr_mask;
+ return INTERRUPT_MASK_ALL_VER_21;
}
/**
@@ -696,10 +685,22 @@ static inline u32 ufshcd_get_intr_mask(struct ufs_hba *hba)
*/
static inline u32 ufshcd_get_ufs_version(struct ufs_hba *hba)
{
+ u32 ufshci_ver;
+
if (hba->quirks & UFSHCD_QUIRK_BROKEN_UFS_HCI_VERSION)
- return ufshcd_vops_get_ufs_hci_version(hba);
+ ufshci_ver = ufshcd_vops_get_ufs_hci_version(hba);
+ else
+ ufshci_ver = ufshcd_readl(hba, REG_UFS_VERSION);
- return ufshcd_readl(hba, REG_UFS_VERSION);
+ /*
+ * UFSHCI v1.x uses a different version scheme, in order
+ * to allow the use of comparisons with the ufshci_version
+ * function, we convert it to the same scheme as ufs 2.0+.
+ */
+ if (ufshci_ver & 0x00010000)
+ return ufshci_version(1, ufshci_ver & 0x00000100);
+
+ return ufshci_ver;
}
/**
@@ -931,8 +932,7 @@ static inline bool ufshcd_is_hba_active(struct ufs_hba *hba)
u32 ufshcd_get_local_unipro_ver(struct ufs_hba *hba)
{
/* HCI version 1.0 and 1.1 supports UniPro 1.41 */
- if ((hba->ufs_version == UFSHCI_VERSION_10) ||
- (hba->ufs_version == UFSHCI_VERSION_11))
+ if (hba->ufs_version <= ufshci_version(1, 1))
return UFS_UNIPRO_VER_1_41;
else
return UFS_UNIPRO_VER_1_6;
@@ -2335,7 +2335,7 @@ static void ufshcd_enable_intr(struct ufs_hba *hba, u32 intrs)
{
u32 set = ufshcd_readl(hba, REG_INTERRUPT_ENABLE);
- if (hba->ufs_version == UFSHCI_VERSION_10) {
+ if (hba->ufs_version == ufshci_version(1, 0)) {
u32 rw;
rw = set & INTERRUPT_MASK_RW_VER_10;
set = rw | ((set ^ intrs) & intrs);
@@ -2355,7 +2355,7 @@ static void ufshcd_disable_intr(struct ufs_hba *hba, u32 intrs)
{
u32 set = ufshcd_readl(hba, REG_INTERRUPT_ENABLE);
- if (hba->ufs_version == UFSHCI_VERSION_10) {
+ if (hba->ufs_version == ufshci_version(1, 0)) {
u32 rw;
rw = (set & INTERRUPT_MASK_RW_VER_10) &
~(intrs & INTERRUPT_MASK_RW_VER_10);
@@ -2518,8 +2518,7 @@ static int ufshcd_compose_devman_upiu(struct ufs_hba *hba,
u8 upiu_flags;
int ret = 0;
- if ((hba->ufs_version == UFSHCI_VERSION_10) ||
- (hba->ufs_version == UFSHCI_VERSION_11))
+ if (hba->ufs_version <= ufshci_version(1, 1))
lrbp->command_type = UTP_CMD_TYPE_DEV_MANAGE;
else
lrbp->command_type = UTP_CMD_TYPE_UFS_STORAGE;
@@ -2546,8 +2545,7 @@ static int ufshcd_comp_scsi_upiu(struct ufs_hba *hba, struct ufshcd_lrb *lrbp)
u8 upiu_flags;
int ret = 0;
- if ((hba->ufs_version == UFSHCI_VERSION_10) ||
- (hba->ufs_version == UFSHCI_VERSION_11))
+ if (hba->ufs_version <= ufshci_version(1, 1))
lrbp->command_type = UTP_CMD_TYPE_SCSI;
else
lrbp->command_type = UTP_CMD_TYPE_UFS_STORAGE;
@@ -6561,15 +6559,10 @@ static int ufshcd_issue_devman_upiu_cmd(struct ufs_hba *hba,
ufshcd_prepare_lrbp_crypto(NULL, lrbp);
hba->dev_cmd.type = cmd_type;
- switch (hba->ufs_version) {
- case UFSHCI_VERSION_10:
- case UFSHCI_VERSION_11:
+ if (hba->ufs_version <= ufshci_version(1, 1))
lrbp->command_type = UTP_CMD_TYPE_DEV_MANAGE;
- break;
- default:
+ else
lrbp->command_type = UTP_CMD_TYPE_UFS_STORAGE;
- break;
- }
/* update the task tag in the request upiu */
req_upiu->header.dword_0 |= cpu_to_be32(tag);
@@ -9298,10 +9291,7 @@ int ufshcd_init(struct ufs_hba *hba, void __iomem *mmio_base, unsigned int irq)
/* Get UFS version supported by the controller */
hba->ufs_version = ufshcd_get_ufs_version(hba);
- if ((hba->ufs_version != UFSHCI_VERSION_10) &&
- (hba->ufs_version != UFSHCI_VERSION_11) &&
- (hba->ufs_version != UFSHCI_VERSION_20) &&
- (hba->ufs_version != UFSHCI_VERSION_21))
+ if (hba->ufs_version < ufshci_version(1, 0))
dev_err(hba->dev, "invalid UFS version 0x%x\n",
hba->ufs_version);
diff --git a/drivers/scsi/ufs/ufshci.h b/drivers/scsi/ufs/ufshci.h
index 6795e1f0e8f8..e1eb44bacbe4 100644
--- a/drivers/scsi/ufs/ufshci.h
+++ b/drivers/scsi/ufs/ufshci.h
@@ -74,13 +74,16 @@ enum {
#define MINOR_VERSION_NUM_MASK UFS_MASK(0xFFFF, 0)
#define MAJOR_VERSION_NUM_MASK UFS_MASK(0xFFFF, 16)
-/* Controller UFSHCI version */
-enum {
- UFSHCI_VERSION_10 = 0x00010000, /* 1.0 */
- UFSHCI_VERSION_11 = 0x00010100, /* 1.1 */
- UFSHCI_VERSION_20 = 0x00000200, /* 2.0 */
- UFSHCI_VERSION_21 = 0x00000210, /* 2.1 */
-};
+/*
+ * Controller UFSHCI version
+ * - 2.x and newer use the following scheme:
+ * major << 8 + minor << 4
+ * - 1.x has been converted to match this in
+ * ufshcd_get_ufs_version()
+ */
+static inline u32 ufshci_version(u32 major, u32 minor) {
+ return (((major) << 8) + ((minor) << 4));
+}
/*
* HCDDID - Host Controller Identification Descriptor
--
2.29.2
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