usb: common: move urb code to common
Move urb code from musb only use to a more common scope, so other
drivers in the future can use the handling of urb in usb.
Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org>
diff --git a/drivers/usb/common/Makefile b/drivers/usb/common/Makefile
index 3bedbf2..7eacc90 100644
--- a/drivers/usb/common/Makefile
+++ b/drivers/usb/common/Makefile
@@ -4,5 +4,8 @@
#
obj-$(CONFIG_$(SPL_)DM_USB) += common.o
+obj-$(CONFIG_USB_MUSB_HOST) += usb_urb.o
+obj-$(CONFIG_USB_MUSB_GADGET) += usb_urb.o
+obj-$(CONFIG_USB_R8A66597_HCD) += usb_urb.o
obj-$(CONFIG_USB_EHCI_FSL) += fsl-dt-fixup.o fsl-errata.o
obj-$(CONFIG_USB_XHCI_FSL) += fsl-dt-fixup.o fsl-errata.o
diff --git a/drivers/usb/common/usb_urb.c b/drivers/usb/common/usb_urb.c
new file mode 100644
index 0000000..be3b6b9
--- /dev/null
+++ b/drivers/usb/common/usb_urb.c
@@ -0,0 +1,160 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Common code for usb urb handling, based on the musb-new code
+ *
+ * Copyright 2021 Linaro, Rui Miguel Silva <rui.silva@linaro.org>
+ *
+ */
+
+#include <dm/device.h>
+#include <dm/device_compat.h>
+#include <linux/usb/usb_urb_compat.h>
+
+#include <time.h>
+#include <usb.h>
+
+#if CONFIG_IS_ENABLED(DM_USB)
+struct usb_device *usb_dev_get_parent(struct usb_device *udev)
+{
+ struct udevice *parent = udev->dev->parent;
+
+ /*
+ * When called from usb-uclass.c: usb_scan_device() udev->dev points
+ * to the parent udevice, not the actual udevice belonging to the
+ * udev as the device is not instantiated yet.
+ *
+ * If dev is an usb-bus, then we are called from usb_scan_device() for
+ * an usb-device plugged directly into the root port, return NULL.
+ */
+ if (device_get_uclass_id(udev->dev) == UCLASS_USB)
+ return NULL;
+
+ /*
+ * If these 2 are not the same we are being called from
+ * usb_scan_device() and udev itself is the parent.
+ */
+ if (dev_get_parent_priv(udev->dev) != udev)
+ return udev;
+
+ /* We are being called normally, use the parent pointer */
+ if (device_get_uclass_id(parent) == UCLASS_USB_HUB)
+ return dev_get_parent_priv(parent);
+
+ return NULL;
+}
+#else
+struct usb_device *usb_dev_get_parent(struct usb_device *udev)
+{
+ return udev->parent;
+}
+#endif
+
+static void usb_urb_complete(struct urb *urb)
+{
+ urb->dev->status &= ~USB_ST_NOT_PROC;
+ urb->dev->act_len = urb->actual_length;
+
+ if (urb->status == -EINPROGRESS)
+ urb->status = 0;
+}
+
+void usb_urb_fill(struct urb *urb, struct usb_host_endpoint *hep,
+ struct usb_device *dev, int endpoint_type,
+ unsigned long pipe, void *buffer, int len,
+ struct devrequest *setup, int interval)
+{
+ int epnum = usb_pipeendpoint(pipe);
+ int is_in = usb_pipein(pipe);
+ u16 maxpacketsize = is_in ? dev->epmaxpacketin[epnum] :
+ dev->epmaxpacketout[epnum];
+
+ memset(urb, 0, sizeof(struct urb));
+ memset(hep, 0, sizeof(struct usb_host_endpoint));
+ INIT_LIST_HEAD(&hep->urb_list);
+ INIT_LIST_HEAD(&urb->urb_list);
+ urb->ep = hep;
+ urb->complete = usb_urb_complete;
+ urb->status = -EINPROGRESS;
+ urb->dev = dev;
+ urb->pipe = pipe;
+ urb->transfer_buffer = buffer;
+ urb->transfer_dma = (unsigned long)buffer;
+ urb->transfer_buffer_length = len;
+ urb->setup_packet = (unsigned char *)setup;
+
+ urb->ep->desc.wMaxPacketSize = __cpu_to_le16(maxpacketsize);
+ urb->ep->desc.bmAttributes = endpoint_type;
+ urb->ep->desc.bEndpointAddress = ((is_in ? USB_DIR_IN : USB_DIR_OUT) |
+ epnum);
+ urb->ep->desc.bInterval = interval;
+}
+
+int usb_urb_submit(struct usb_hcd *hcd, struct urb *urb)
+{
+ const struct usb_urb_ops *ops = hcd->urb_ops;
+ unsigned long timeout;
+ int ret;
+
+ if (!ops)
+ return -EINVAL;
+
+ ret = ops->urb_enqueue(hcd, urb, 0);
+ if (ret < 0) {
+ printf("Failed to enqueue URB to controller\n");
+ return ret;
+ }
+
+ timeout = get_timer(0) + USB_TIMEOUT_MS(urb->pipe);
+ do {
+ if (ctrlc())
+ return -EIO;
+ ops->isr(0, hcd);
+ } while (urb->status == -EINPROGRESS && get_timer(0) < timeout);
+
+ if (urb->status == -EINPROGRESS)
+ ops->urb_dequeue(hcd, urb, -ETIME);
+
+ return urb->status;
+}
+
+int usb_urb_submit_control(struct usb_hcd *hcd, struct urb *urb,
+ struct usb_host_endpoint *hep,
+ struct usb_device *dev, unsigned long pipe,
+ void *buffer, int len, struct devrequest *setup,
+ int interval, enum usb_device_speed speed)
+{
+ const struct usb_urb_ops *ops = hcd->urb_ops;
+
+ usb_urb_fill(urb, hep, dev, USB_ENDPOINT_XFER_CONTROL, pipe, buffer,
+ len, setup, 0);
+
+ /* Fix speed for non hub-attached devices */
+ if (!usb_dev_get_parent(dev)) {
+ dev->speed = speed;
+ if (ops->hub_control)
+ return ops->hub_control(hcd, dev, pipe, buffer, len,
+ setup);
+ }
+
+ return usb_urb_submit(hcd, urb);
+}
+
+int usb_urb_submit_bulk(struct usb_hcd *hcd, struct urb *urb,
+ struct usb_host_endpoint *hep, struct usb_device *dev,
+ unsigned long pipe, void *buffer, int len)
+{
+ usb_urb_fill(urb, hep, dev, USB_ENDPOINT_XFER_BULK, pipe, buffer, len,
+ NULL, 0);
+
+ return usb_urb_submit(hcd, urb);
+}
+
+int usb_urb_submit_irq(struct usb_hcd *hcd, struct urb *urb,
+ struct usb_host_endpoint *hep, struct usb_device *dev,
+ unsigned long pipe, void *buffer, int len, int interval)
+{
+ usb_urb_fill(urb, hep, dev, USB_ENDPOINT_XFER_INT, pipe, buffer, len,
+ NULL, interval);
+
+ return usb_urb_submit(hcd, urb);
+}