148 lines
3.5 KiB
C
148 lines
3.5 KiB
C
#include <common.h>
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#include <init.h>
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#include <clock.h>
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#include <usb/musb.h>
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#include <usb/usb.h>
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#include <linux/types.h>
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#include <linux/err.h>
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#include <linux/barebox-wrapper.h>
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#include "musb_core.h"
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#include "musb_gadget.h"
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static struct usb_host_endpoint hep;
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static struct urb urb;
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static void musb_host_complete_urb(struct urb *urb)
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{
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urb->dev->status &= ~USB_ST_NOT_PROC;
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urb->dev->act_len = urb->actual_length;
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}
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static struct urb *construct_urb(struct usb_device *dev, int endpoint_type,
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unsigned long pipe, void *buffer, int len,
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struct devrequest *setup, int interval)
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{
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int epnum = usb_pipeendpoint(pipe);
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int is_in = usb_pipein(pipe);
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memset(&urb, 0, sizeof(struct urb));
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memset(&hep, 0, sizeof(struct usb_host_endpoint));
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INIT_LIST_HEAD(&hep.urb_list);
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INIT_LIST_HEAD(&urb.urb_list);
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urb.ep = &hep;
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urb.complete = musb_host_complete_urb;
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urb.status = -EINPROGRESS;
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urb.dev = dev;
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urb.pipe = pipe;
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urb.transfer_buffer = buffer;
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urb.transfer_dma = (unsigned long)buffer;
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urb.transfer_buffer_length = len;
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urb.setup_packet = (unsigned char *)setup;
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urb.ep->desc.wMaxPacketSize =
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__cpu_to_le16(is_in ? dev->epmaxpacketin[epnum] :
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dev->epmaxpacketout[epnum]);
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urb.ep->desc.bmAttributes = endpoint_type;
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urb.ep->desc.bEndpointAddress =
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(is_in ? USB_DIR_IN : USB_DIR_OUT) | epnum;
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urb.ep->desc.bInterval = interval;
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return &urb;
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}
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#define MUSB_HOST_TIMEOUT 0x5fffff
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static int submit_urb(struct usb_device *dev, struct urb *urb, int timeout_ms)
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{
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struct usb_host *host = dev->host;
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struct musb *musb = to_musb(host);
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int ret;
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uint64_t start;
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uint64_t timeout = timeout_ms;
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ret = musb_urb_enqueue(musb->hcd, urb, 0);
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if (ret < 0) {
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printf("Failed to enqueue URB to controller\n");
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return ret;
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}
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start = get_time_ns();
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do {
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musb->isr(musb);
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if (!urb->status)
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return 0;
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} while (!is_timeout(start, timeout * MSECOND));
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if (urb->dev->status & USB_ST_NOT_PROC)
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ret = -ETIMEDOUT;
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else
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ret = urb->status;
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musb_urb_dequeue(musb->hcd, urb, -ECONNRESET);
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return ret;
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}
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static int
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submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
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int length, int timeout)
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{
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struct urb *urb = construct_urb(dev, USB_ENDPOINT_XFER_BULK, pipe,
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buffer, length, NULL, 0);
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return submit_urb(dev, urb, timeout);
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}
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static int
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submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
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int length, struct devrequest *setup, int timeout)
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{
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struct usb_host *host = dev->host;
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struct musb *musb = to_musb(host);
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struct urb *urb = construct_urb(dev, USB_ENDPOINT_XFER_CONTROL, pipe,
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buffer, length, setup, 0);
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/* Fix speed for non hub-attached devices */
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if (!dev->parent)
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dev->speed = musb->host_speed;
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return submit_urb(dev, urb, timeout);
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}
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static int
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submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
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int length, int interval)
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{
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struct urb *urb = construct_urb(dev, USB_ENDPOINT_XFER_INT, pipe,
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buffer, length, NULL, interval);
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return submit_urb(dev, urb, 100);
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}
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static int musb_detect(struct device_d *dev)
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{
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struct musb *musb = dev->priv;
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return usb_host_detect(&musb->host);
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}
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int musb_register(struct musb *musb)
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{
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struct usb_host *host;
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host = &musb->host;
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host->hw_dev = musb->controller;
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host->init = musb_init;
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host->submit_int_msg = submit_int_msg;
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host->submit_control_msg = submit_control_msg;
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host->submit_bulk_msg = submit_bulk_msg;
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musb->controller->priv = musb;
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musb->controller->detect = musb_detect;
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usb_register_host(host);
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return 0;
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}
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