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Message-ID: <20240326083253.1303-2-avri.altman@wdc.com>
Date: Tue, 26 Mar 2024 10:32:49 +0200
From: Avri Altman <avri.altman@....com>
To: "James E . J . Bottomley" <jejb@...ux.ibm.com>,
"Martin K . Petersen" <martin.petersen@...cle.com>
Cc: Bart Van Assche <bvanassche@....org>,
Bean Huo <beanhuo@...ron.com>,
linux-scsi@...r.kernel.org,
linux-kernel@...r.kernel.org,
Avri Altman <avri.altman@....com>
Subject: [PATCH 1/2] scsi: ufs: Remove support for old UFSHCI versions
UFS spec version 2.1 was published more than 10 years ago. It is
vanishingly unlikely that even there are out there platforms that uses
earlier host controllers, let alone that those ancient platforms will
ever run a V6.10 kernel. Thus, remove support of host controllers prior
to UFS2.1.
Signed-off-by: Avri Altman <avri.altman@....com>
---
drivers/ufs/core/ufshcd.c | 73 ++++++++-------------------------------
include/ufs/ufshci.h | 7 ----
2 files changed, 15 insertions(+), 65 deletions(-)
diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
index 823bc28c0cb0..cda1939f2d8a 100644
--- a/drivers/ufs/core/ufshcd.c
+++ b/drivers/ufs/core/ufshcd.c
@@ -740,22 +740,6 @@ static int ufshcd_wait_for_register(struct ufs_hba *hba, u32 reg, u32 mask,
return err;
}
-/**
- * ufshcd_get_intr_mask - Get the interrupt bit mask
- * @hba: Pointer to adapter instance
- *
- * Return: interrupt bit mask per version
- */
-static inline u32 ufshcd_get_intr_mask(struct ufs_hba *hba)
-{
- 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;
-
- return INTERRUPT_MASK_ALL_VER_21;
-}
-
/**
* ufshcd_get_ufs_version - Get the UFS version supported by the HBA
* @hba: Pointer to adapter instance
@@ -992,10 +976,6 @@ EXPORT_SYMBOL_GPL(ufshcd_is_hba_active);
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(1, 1))
- return UFS_UNIPRO_VER_1_41;
- else
return UFS_UNIPRO_VER_1_6;
}
EXPORT_SYMBOL(ufshcd_get_local_unipro_ver);
@@ -2674,14 +2654,7 @@ 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(1, 0)) {
- u32 rw;
- rw = set & INTERRUPT_MASK_RW_VER_10;
- set = rw | ((set ^ intrs) & intrs);
- } else {
- set |= intrs;
- }
-
+ set |= intrs;
ufshcd_writel(hba, set, REG_INTERRUPT_ENABLE);
}
@@ -2694,16 +2667,7 @@ 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(1, 0)) {
- u32 rw;
- rw = (set & INTERRUPT_MASK_RW_VER_10) &
- ~(intrs & INTERRUPT_MASK_RW_VER_10);
- set = rw | ((set & intrs) & ~INTERRUPT_MASK_RW_VER_10);
-
- } else {
- set &= ~intrs;
- }
-
+ set &= ~intrs;
ufshcd_writel(hba, set, REG_INTERRUPT_ENABLE);
}
@@ -2715,21 +2679,17 @@ static void ufshcd_disable_intr(struct ufs_hba *hba, u32 intrs)
* @upiu_flags: flags required in the header
* @cmd_dir: requests data direction
* @ehs_length: Total EHS Length (in 32‐bytes units of all Extra Header Segments)
- * @legacy_type: UTP_CMD_TYPE_SCSI or UTP_CMD_TYPE_DEV_MANAGE
*/
static void
ufshcd_prepare_req_desc_hdr(struct ufs_hba *hba, struct ufshcd_lrb *lrbp,
u8 *upiu_flags, enum dma_data_direction cmd_dir,
- int ehs_length, enum utp_cmd_type legacy_type)
+ int ehs_length)
{
struct utp_transfer_req_desc *req_desc = lrbp->utr_descriptor_ptr;
struct request_desc_header *h = &req_desc->header;
enum utp_data_direction data_direction;
- if (hba->ufs_version <= ufshci_version(1, 1))
- lrbp->command_type = legacy_type;
- else
- lrbp->command_type = UTP_CMD_TYPE_UFS_STORAGE;
+ lrbp->command_type = UTP_CMD_TYPE_UFS_STORAGE;
*h = (typeof(*h)){ };
@@ -2863,7 +2823,7 @@ static int ufshcd_compose_devman_upiu(struct ufs_hba *hba,
u8 upiu_flags;
int ret = 0;
- ufshcd_prepare_req_desc_hdr(hba, lrbp, &upiu_flags, DMA_NONE, 0, UTP_CMD_TYPE_DEV_MANAGE);
+ ufshcd_prepare_req_desc_hdr(hba, lrbp, &upiu_flags, DMA_NONE, 0);
if (hba->dev_cmd.type == DEV_CMD_TYPE_QUERY)
ufshcd_prepare_utp_query_req_upiu(hba, lrbp, upiu_flags);
@@ -2887,8 +2847,7 @@ static void ufshcd_comp_scsi_upiu(struct ufs_hba *hba, struct ufshcd_lrb *lrbp)
unsigned int ioprio_class = IOPRIO_PRIO_CLASS(req_get_ioprio(rq));
u8 upiu_flags;
- ufshcd_prepare_req_desc_hdr(hba, lrbp, &upiu_flags,
- lrbp->cmd->sc_data_direction, 0, UTP_CMD_TYPE_SCSI);
+ ufshcd_prepare_req_desc_hdr(hba, lrbp, &upiu_flags, lrbp->cmd->sc_data_direction, 0);
if (ioprio_class == IOPRIO_CLASS_RT)
upiu_flags |= UPIU_CMD_FLAGS_CP;
ufshcd_prepare_utp_scsi_cmd_upiu(lrbp, upiu_flags);
@@ -5565,15 +5524,13 @@ void ufshcd_compl_one_cqe(struct ufs_hba *hba, int task_tag,
ufshcd_release_scsi_cmd(hba, lrbp);
/* Do not touch lrbp after scsi done */
scsi_done(cmd);
- } else if (lrbp->command_type == UTP_CMD_TYPE_DEV_MANAGE ||
- lrbp->command_type == UTP_CMD_TYPE_UFS_STORAGE) {
- if (hba->dev_cmd.complete) {
- if (cqe) {
- ocs = le32_to_cpu(cqe->status) & MASK_OCS;
- lrbp->utr_descriptor_ptr->header.ocs = ocs;
- }
- complete(hba->dev_cmd.complete);
+ } else {
+ WARN_ON(!hba->dev_cmd.complete);
+ if (cqe) {
+ ocs = le32_to_cpu(cqe->status) & MASK_OCS;
+ lrbp->utr_descriptor_ptr->header.ocs = ocs;
}
+ complete(hba->dev_cmd.complete);
}
}
@@ -7229,7 +7186,7 @@ static int ufshcd_issue_devman_upiu_cmd(struct ufs_hba *hba,
ufshcd_setup_dev_cmd(hba, lrbp, cmd_type, 0, tag);
- ufshcd_prepare_req_desc_hdr(hba, lrbp, &upiu_flags, DMA_NONE, 0, UTP_CMD_TYPE_DEV_MANAGE);
+ ufshcd_prepare_req_desc_hdr(hba, lrbp, &upiu_flags, DMA_NONE, 0);
/* update the task tag in the request upiu */
req_upiu->header.task_tag = tag;
@@ -7381,7 +7338,7 @@ int ufshcd_advanced_rpmb_req_handler(struct ufs_hba *hba, struct utp_upiu_req *r
ufshcd_setup_dev_cmd(hba, lrbp, DEV_CMD_TYPE_RPMB, UFS_UPIU_RPMB_WLUN, tag);
- ufshcd_prepare_req_desc_hdr(hba, lrbp, &upiu_flags, DMA_NONE, ehs, UTP_CMD_TYPE_DEV_MANAGE);
+ ufshcd_prepare_req_desc_hdr(hba, lrbp, &upiu_flags, DMA_NONE, ehs);
/* update the task tag */
req_upiu->header.task_tag = tag;
@@ -10508,7 +10465,7 @@ int ufshcd_init(struct ufs_hba *hba, void __iomem *mmio_base, unsigned int irq)
hba->ufs_version = ufshcd_get_ufs_version(hba);
/* Get Interrupt bit mask per version */
- hba->intr_mask = ufshcd_get_intr_mask(hba);
+ hba->intr_mask = INTERRUPT_MASK_ALL_VER_21;
err = ufshcd_set_dma_mask(hba);
if (err) {
diff --git a/include/ufs/ufshci.h b/include/ufs/ufshci.h
index 88193f5540e5..aecdc209ab75 100644
--- a/include/ufs/ufshci.h
+++ b/include/ufs/ufshci.h
@@ -425,13 +425,6 @@ union ufs_crypto_cfg_entry {
* Request Descriptor Definitions
*/
-/* Transfer request command type */
-enum utp_cmd_type {
- UTP_CMD_TYPE_SCSI = 0x0,
- UTP_CMD_TYPE_UFS = 0x1,
- UTP_CMD_TYPE_DEV_MANAGE = 0x2,
-};
-
/* To accommodate UFS2.0 required Command type */
enum {
UTP_CMD_TYPE_UFS_STORAGE = 0x1,
--
2.42.0
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