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ufs: Add a PCI based UFS controller driver

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This adds a simple PCI based UFS controller driver with a QEMU
emulated UFS controller on the PCI bus.

Requiring QEMU v8.2+.

Signed-off-by: Bin Meng <bmeng@tinylab.org>
Reviewed-by: Neha Malcom Francis <n-francis@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Bin Meng 2023-10-11 21:15:50 +08:00 committed by Tom Rini
parent e5c19ce47c
commit 2ec7d657c0
3 changed files with 57 additions and 0 deletions
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11
drivers/ufs/Kconfig
View file

@ -15,6 +15,17 @@ config CADENCE_UFS
This selects the platform driver for the Cadence UFS host
controller present on present TI's J721e devices.
config UFS_PCI
bool "PCI bus based UFS Controller support"
depends on PCI && UFS
help
This selects the PCI UFS Host Controller Interface. Select this if
you have UFS Host Controller with PCI Interface.
If you have a controller with this interface, say Y here.
If unsure, say N.
config TI_J721E_UFS
bool "Glue Layer driver for UFS on TI J721E devices"
help

1
drivers/ufs/Makefile
View file

@ -6,4 +6,5 @@
obj-$(CONFIG_UFS) += ufs.o ufs-uclass.o
obj-$(CONFIG_CADENCE_UFS) += cdns-platform.o
obj-$(CONFIG_TI_J721E_UFS) += ti-j721e-ufs.o
obj-$(CONFIG_UFS_PCI) += ufs-pci.o
obj-$(CONFIG_UFS_RENESAS) += ufs-renesas.o

45
drivers/ufs/ufs-pci.c Normal file
View file

@ -0,0 +1,45 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2023 tinylab.org
* Author: Bin Meng <bmeng@tinylab.org>
*/
#include <common.h>
#include <dm.h>
#include <errno.h>
#include <pci.h>
#include <ufs.h>
#include <dm/device_compat.h>
#include "ufs.h"
static int ufs_pci_bind(struct udevice *dev)
{
struct udevice *scsi_dev;
return ufs_scsi_bind(dev, &scsi_dev);
}
static int ufs_pci_probe(struct udevice *dev)
{
int err;
err = ufshcd_probe(dev, NULL);
if (err)
dev_err(dev, "%s failed (ret=%d)\n", __func__, err);
return err;
}
U_BOOT_DRIVER(ufs_pci) = {
.name = "ufs_pci",
.id = UCLASS_UFS,
.bind = ufs_pci_bind,
.probe = ufs_pci_probe,
};
static struct pci_device_id ufs_supported[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_REDHAT, PCI_DEVICE_ID_REDHAT_UFS) },
{},
};
U_BOOT_PCI_DEVICE(ufs_pci, ufs_supported);