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 ---
drivers/ufs/Kconfig | 11 +++++++++++ drivers/ufs/Makefile | 1 + drivers/ufs/ufs-pci.c | 45 +++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 57 insertions(+) create mode 100644 drivers/ufs/ufs-pci.c
diff --git a/drivers/ufs/Kconfig b/drivers/ufs/Kconfig index 0e0cc58e3d..42797ce052 100644 --- a/drivers/ufs/Kconfig +++ b/drivers/ufs/Kconfig @@ -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 diff --git a/drivers/ufs/Makefile b/drivers/ufs/Makefile index 4f3344fd4e..13f1e689ef 100644 --- a/drivers/ufs/Makefile +++ b/drivers/ufs/Makefile @@ -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 diff --git a/drivers/ufs/ufs-pci.c b/drivers/ufs/ufs-pci.c new file mode 100644 index 0000000000..bf697106a0 --- /dev/null +++ b/drivers/ufs/ufs-pci.c @@ -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", 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);