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ufs: Add UFSHCD_QUIRK_BROKEN_64BIT_ADDRESS

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Add UFSHCD_QUIRK_BROKEN_64BIT_ADDRESS for host controllers which do not
support 64-bit addressing.

Ported from Linux kernel commit
6554400d6f66 ("scsi: ufs: core: Add UFSHCD_QUIRK_BROKEN_64BIT_ADDRESS")
with ufs_scsi_buffer_aligned() based on U-Boot generic bounce buffer.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Reviewed-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
Tested-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
This commit is contained in:
Marek Vasut
2023-08-16 17:05:50 +02:00
committed by Tom Rini
parent 5dab730cac
commit 91913a1aa2
2 changed files with 32 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
drivers/ufs/ufs.c
View File

@@ -8,6 +8,7 @@
* Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com
*/
#include <bouncebuf.h>
#include <charset.h>
#include <common.h>
#include <dm.h>
@@ -1889,6 +1890,8 @@ int ufshcd_probe(struct udevice *ufs_dev, struct ufs_hba_ops *hba_ops)
/* Read capabilties registers */
hba->capabilities = ufshcd_readl(hba, REG_CONTROLLER_CAPABILITIES);
if (hba->quirks & UFSHCD_QUIRK_BROKEN_64BIT_ADDRESS)
hba->capabilities &= ~MASK_64_ADDRESSING_SUPPORT;
/* Get UFS version supported by the controller */
hba->version = ufshcd_get_ufs_version(hba);
@@ -1942,8 +1945,31 @@ int ufs_scsi_bind(struct udevice *ufs_dev, struct udevice **scsi_devp)
return ret;
}
#if IS_ENABLED(CONFIG_BOUNCE_BUFFER)
static int ufs_scsi_buffer_aligned(struct udevice *scsi_dev, struct bounce_buffer *state)
{
#ifdef CONFIG_PHYS_64BIT
struct ufs_hba *hba = dev_get_uclass_priv(scsi_dev->parent);
uintptr_t ubuf = (uintptr_t)state->user_buffer;
size_t len = state->len_aligned;
/* Check if below 32bit boundary */
if ((hba->quirks & UFSHCD_QUIRK_BROKEN_64BIT_ADDRESS) &&
((ubuf >> 32) || (ubuf + len) >> 32)) {
dev_dbg(scsi_dev, "Buffer above 32bit boundary %lx-%lx\n",
ubuf, ubuf + len);
return 0;
}
#endif
return 1;
}
#endif /* CONFIG_BOUNCE_BUFFER */
static struct scsi_ops ufs_ops = {
.exec = ufs_scsi_exec,
#if IS_ENABLED(CONFIG_BOUNCE_BUFFER)
.buffer_aligned = ufs_scsi_buffer_aligned,
#endif /* CONFIG_BOUNCE_BUFFER */
};
int ufs_probe_dev(int index)

6
drivers/ufs/ufs.h
View File

@@ -719,6 +719,12 @@ struct ufs_hba {
*/
#define UFSHCD_QUIRK_BROKEN_LCC BIT(0)
/*
* This quirk needs to be enabled if the host controller has
* 64-bit addressing supported capability but it doesn't work.
*/
#define UFSHCD_QUIRK_BROKEN_64BIT_ADDRESS BIT(1)
/* Virtual memory reference */
struct utp_transfer_cmd_desc *ucdl;
struct utp_transfer_req_desc *utrdl;