ufs: Add a PCI based UFS controller driver
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>
diff --git a/drivers/ufs/ufs-pci.c b/drivers/ufs/ufs-pci.c
new file mode 100644
index 0000000..ad41358
--- /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", __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);