uboot-s3c2410_udc.patch

Uboot常用的移植patches, 方便定制移植到s3c2440

+		}
+		if ((ep_csr1 & S3C2410_UDC_OCSR1_PKTRDY) && urb) {
+			/* Read pending data from fifo */
+			u32 fifo_count = fifo_count_out();
+			int is_last = 0;
+			u32 i, urb_avail = urb->buffer_length - urb->actual_length;
+			u8 *cp = urb->buffer + urb->actual_length;
+
+			if (fifo_count < endpoint->rcv_packetSize)
+				is_last = 1;
+
+			debug("fifo_count=%u is_last=%, urb_avail=%u)\n",
+				fifo_count, is_last, urb_avail);
+
+			if (fifo_count < urb_avail)
+				urb_avail = fifo_count;
+
+			for (i = 0; i < urb_avail; i++)
+				*cp++ = inb(ep_fifo_reg[ep]);
+
+			if (is_last)
+				outl(ep_csr1 & ~S3C2410_UDC_OCSR1_PKTRDY,
+				     S3C2410_UDC_OUT_CSR1_REG);
+
+			usbd_rcv_complete(endpoint, urb_avail, 0);
+		}
+	}
+
+	urb = endpoint->rcv_urb;
+}
+
+/*
+-------------------------------------------------------------------------------
+*/
+
+/* this is just an empty wrapper for usbtty who assumes polling operation */
+void udc_irq(void)
+{
+}
+
+/* Handle general USB interrupts and dispatch according to type.
+ * This function implements TRM Figure 14-13.
+ */
+void s3c2410_udc_irq(void)
+{
+	struct usb_endpoint_instance *ep0 = udc_device->bus->endpoint_array;
+	u_int32_t save_idx = inl(S3C2410_UDC_INDEX_REG);
+
+	/* read interrupt sources */
+	u_int32_t usb_status = inl(S3C2410_UDC_USB_INT_REG);
+	u_int32_t usbd_status = inl(S3C2410_UDC_EP_INT_REG);
+
+	//debug("< IRQ usbs=0x%02x, usbds=0x%02x start >", usb_status, usbd_status);
+
+	/* clear interrupts */
+	outl(usb_status, S3C2410_UDC_USB_INT_REG);
+
+	if (usb_status & S3C2410_UDC_USBINT_RESET) {
+		//serial_putc('R');
+		debug("RESET pwr=0x%x\n", inl(S3C2410_UDC_PWR_REG));
+		udc_setup_ep(udc_device, 0, ep0);
+		outl(S3C2410_UDC_EP0_CSR_SSE|S3C2410_UDC_EP0_CSR_SOPKTRDY, S3C2410_UDC_EP0_CSR_REG);
+		ep0->state = EP0_IDLE;
+		usbd_device_event_irq (udc_device, DEVICE_RESET, 0);
+	}
+
+	if (usb_status & S3C2410_UDC_USBINT_RESUME) {
+		debug("RESUME\n");
+		usbd_device_event_irq(udc_device, DEVICE_BUS_ACTIVITY, 0);
+	}
+
+	if (usb_status & S3C2410_UDC_USBINT_SUSPEND) {
+		debug("SUSPEND\n");
+		usbd_device_event_irq(udc_device, DEVICE_BUS_INACTIVE, 0);
+	}
+
+	/* Endpoint Interrupts */
+	if (usbd_status) {
+		int i;
+
+		if (usbd_status & S3C2410_UDC_INT_EP0) {
+			outl(S3C2410_UDC_INT_EP0, S3C2410_UDC_EP_INT_REG);
+			s3c2410_udc_ep0();
+		}
+
+		for (i = 1; i < 5; i++) {
+			u_int32_t tmp = 1 << i;
+
+			if (usbd_status & tmp) {
+				/* FIXME: Handle EP X */
+				outl(tmp, S3C2410_UDC_EP_INT_REG);
+				s3c2410_udc_epn(i);
+			}
+		}
+	}
+	S3C2410_UDC_SETIX(save_idx);
+}
+
+/*
+-------------------------------------------------------------------------------
+*/
+
+
+/*
+ * Start of public functions.
+ */
+
+/* Called to start packet transmission. */
+void udc_endpoint_write (struct usb_endpoint_instance *endpoint)
+{
+	unsigned short epnum =
+		endpoint->endpoint_address & USB_ENDPOINT_NUMBER_MASK;
+
+	debug("Entering for ep %x ", epnum);
+
+	if (endpoint->tx_urb) {
+		u32 ep_csr1;
+		debug_urb_buffer("We have an URB, transmitting", endpoint);
+
+		s3c2410_write_noniso_tx_fifo(endpoint);
+
+		S3C2410_UDC_SETIX(epnum);
+
+		ep_csr1 = inl(S3C2410_UDC_IN_CSR1_REG);
+		outl(ep_csr1|S3C2410_UDC_ICSR1_PKTRDY, S3C2410_UDC_IN_CSR1_REG);
+	} else
+		debug("\n");
+}
+
+/* Start to initialize h/w stuff */
+int udc_init (void)
+{
+	S3C24X0_CLOCK_POWER * const clk_power = S3C24X0_GetBase_CLOCK_POWER();
+	S3C24X0_INTERRUPT * irq = S3C24X0_GetBase_INTERRUPT();
+
+	udc_device = NULL;
+
+	/* Set and check clock control.
+	 * We might ought to be using the clock control API to do
+	 * this instead of fiddling with the clock registers directly
+	 * here.
+	 */
+	clk_power->CLKCON |= (1 << 7);
+
+	/* Print banner with device revision */
+	printf("USB:   S3C2410 USB Deviced\n");
+
+	/*
+	 * At this point, device is ready for configuration...
+	 */
+	outl(0x00, S3C2410_UDC_EP_INT_EN_REG);
+	outl(0x00, S3C2410_UDC_USB_INT_EN_REG);
+
+	irq->INTMSK &= ~BIT_USBD;
+
+	return 0;
+}
+
+/*
+ * udc_setup_ep - setup endpoint
+ *
+ * Associate a physical endpoint with endpoint_instance
+ */
+int udc_setup_ep (struct usb_device_instance *device,
+		   unsigned int ep, struct usb_endpoint_instance *endpoint)
+{
+	int ep_addr = endpoint->endpoint_address;
+	int packet_size;
+	int attributes;
+	u_int32_t maxp;
+
+	S3C2410_UDC_SETIX(ep);
+
+	if (ep) {
+		if ((ep_addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) {
+			/* IN endpoint */
+			outl(S3C2410_UDC_ICSR1_FFLUSH|S3C2410_UDC_ICSR1_CLRDT,
+			     S3C2410_UDC_IN_CSR1_REG);
+			outl(S3C2410_UDC_ICSR2_MODEIN, S3C2410_UDC_IN_CSR2_REG);
+			packet_size = endpoint->tx_packetSize;
+			attributes = endpoint->tx_attributes;
+		} else {
+			/* OUT endpoint */
+			outl(S3C2410_UDC_ICSR1_CLRDT, S3C2410_UDC_IN_CSR1_REG);
+			outl(0, S3C2410_UDC_IN_CSR2_REG);
+			outl(S3C2410_UDC_OCSR1_FFLUSH|S3C2410_UDC_OCSR1_CLRDT,
+			     S3C2410_UDC_OUT_CSR1_REG);
+			outl(0, S3C2410_UDC_OUT_CSR2_REG);
+			packet_size = endpoint->rcv_packetSize;
+			attributes = endpoint->rcv_attributes;
+		}
+	} else
+		packet_size = endpoint->tx_packetSize;
+
+	switch (packet_size) {
+	case 8:
+		maxp = S3C2410_UDC_MAXP_8;
+		break;
+	case 16:
+		maxp = S3C2410_UDC_MAXP_16;
+		break;
+	case 32:
+		maxp = S3C2410_UDC_MAXP_32;
+		break;
+	case 64:
+		maxp = S3C2410_UDC_MAXP_64;
+		break;
+	default:
+		debug("invalid packet size %u\n", packet_size);
+		return -1;
+	}
+
+	debug("setting up endpoint %u addr %x packet_size %u maxp %u\n", ep,
+		endpoint->endpoint_address, packet_size, maxp);
+
+	/* Set maximum packet size */
+	writel(maxp, S3C2410_UDC_MAXP_REG);
+
+	return 0;
+}
+
+/* ************************************************************************** */
+
+/**
+ * udc_connected - is the USB cable connected
+ *
+ * Return non-zero if cable is connected.
+ */
+#if 0
+int udc_connected (void)
+{
+	return ((inw (UDC_DEVSTAT) & UDC_ATT) == UDC_ATT);
+}
+#endif
+
+/* Turn on the USB connection by enabling the pullup resistor */
+void udc_connect (void)
+{
+	debug("connect, enable Pullup\n");
+	S3C24X0_INTERRUPT * irq = S3C24X0_GetBase_INTERRUPT();
+
+	udc_ctrl(UDC_CTRL_PULLUP_ENABLE, 0);
+	udelay(10000);
+	udc_ctrl(UDC_CTRL_PULLUP_ENABLE, 1);
+
+	irq->INTMSK &= ~BIT_USBD;
+}
+
+/* Turn off the USB connection by disabling the pullup resistor */
+void udc_disconnect (void)
+{
+	debug("disconnect, disable Pullup\n");
+	S3C24X0_INTERRUPT * irq = S3C24X0_GetBase_INTERRUPT();
+
+	udc_ctrl(UDC_CTRL_PULLUP_ENABLE, 0);
+
+	/* Disable interrupt (we don't want to get interrupts while the kernel
+	 * is relocating itself */
+	irq->INTMSK |= BIT_USBD;
+}
+
+/* Switch on the UDC */
+void udc_enable (struct usb_device_instance *device)
+{
+	debug("enable device %p, status %d\n", device, device->status);
+
+	/* Save the device structure pointer */
+	udc_device = device;
+
+	/* Setup ep0 urb */
+	if (!ep0_urb)
+		ep0_urb = usbd_alloc_urb(udc_device,
+					 udc_device->bus->endpoint_array);
+	else
+		serial_printf("udc_enable: ep0_urb already allocated %p\n",
+			       ep0_urb);
+
+	s3c2410_configure_device(device);
+}
+
+/* Switch off the UDC */
+void udc_disable (void)
+{
+	debug("disable UDC\n");
+
+	s3c2410_deconfigure_device();
+
+	/* Free ep0 URB */
+	if (ep0_urb) {
+		/*usbd_dealloc_urb(ep0_urb); */
+		ep0_urb = NULL;
+	}
+
+	/* Reset device pointer.
+	 * We ought to do this here to balance the initialization of udc_device
+	 * in udc_enable, but some of our other exported functions get called
+	 * by the bus interface driver after udc_disable, so we have to hang on
+	 * to the device pointer to avoid a null pointer dereference. */
+	/* udc_device = NULL; */
+}
+
+/**
+ * udc_startup - allow udc code to do any additional startup
+ */
+void udc_startup_events (struct usb_device_instance *device)
+{
+	/* The DEVICE_INIT event puts the USB device in the state STATE_INIT. */
+	usbd_device_event_irq (device, DEVICE_INIT, 0);
+
+	/* The DEVICE_CREATE event puts the USB device in the state
+	 * STATE_ATTACHED.
+	 */
+	usbd_device_event_irq (device, DEVICE_CREATE, 0);
+
+	/* Some USB controller driver implementations signal
+	 * DEVICE_HUB_CONFIGURED and DEVICE_RESET events here.
+	 * DEVICE_HUB_CONFIGURED causes a transition to the state STATE_POWERED,
+	 * and DEVICE_RESET causes a transition to the state STATE_DEFAULT.
+	 * The OMAP USB client controller has the capability to detect when the
+	 * USB cable is connected to a powered USB bus via the ATT bit in the
+	 * DEVSTAT register, so we will defer the DEVICE_HUB_CONFIGURED and
+	 * DEVICE_RESET events until later.
+	 */
+
+	/* The GTA01 can detect usb device attachment, but we just assume being
+	 * attached for now (go to STATE_POWERED) */
+	usbd_device_event_irq (device, DEVICE_HUB_CONFIGURED, 0);
+
+	udc_enable (device);
+}
+
+void udc_set_nak(int epid)
+{
+	/* FIXME: implement this */
+}
+
+void udc_unset_nak(int epid)
+{
+	/* FIXME: implement this */
+}
+
+#endif /* CONFIG_S3C2410 && CONFIG_USB_DEVICE */
Index: u-boot/drivers/usb/usbdcore_ep0.c
===================================================================
--- u-boot.orig/drivers/usb/usbdcore_ep0.c
+++ u-boot/drivers/usb/usbdcore_ep0.c
@@ -193,9 +193,13 @@
 	if (!urb || !urb->buffer || !urb->buffer_length
 	    || (urb->buffer_length < 255)) {
 		dbg_ep0 (2, "invalid urb %p", urb);
+		serial_printf("invalid urb %p", urb);
 		return -1L;
 	}
 
+	/* re-initialize the ep0 buffer pointer */
+	urb->buffer = (u8 *) urb->buffer_data;
+
 	/* setup tx urb */
 	urb->actual_length = 0;
 	cp = (char*)urb->buffer;
@@ -211,15 +215,8 @@
 			     usbd_device_device_descriptor (device, port))) {
 				return -1;
 			}
-			/* copy descriptor for this device */
-			copy_config (urb, device_descriptor,
-				     sizeof (struct usb_device_descriptor),
-				     max);
-
-			/* correct the correct control endpoint 0 max packet size into the descriptor */
-			device_descriptor =
-				(struct usb_device_descriptor *) urb->buffer;
-
+			urb->buffer = device_descriptor;
+			urb->actual_length = MIN(sizeof(*device_descriptor), max);
 		}
 		dbg_ep0(3, "copied device configuration, actual_length: 0x%x", urb->actual_length);
 		break;
@@ -252,11 +249,9 @@
 					 index);
 				return -1;
 			}
-			dbg_ep0(0, "attempt to copy %d bytes to urb\n",cpu_to_le16(configuration_descriptor->wTotalLength));
-			copy_config (urb, configuration_descriptor,
-
-					cpu_to_le16(configuration_descriptor->wTotalLength),
-				     max);
+			urb->buffer = configuration_descriptor;
+			urb->actual_length =
+				MIN(le16_to_cpu(configuration_descriptor->wTotalLength), max);
 		}
 
 		break;
@@ -389,6 +384,7 @@
 	dbg_ep0 (0, "entering ep0_recv_setup()");
 	if (!urb || !urb->device) {
 		dbg_ep0 (3, "invalid URB %p", urb);
+		serial_printf("invalid URB %p", urb);
 		return -1;
 	}
 
@@ -417,6 +413,7 @@
 		}
 		dbg_ep0 (1, "non standard request: %x",
 			 request->bmRequestType & USB_REQ_TYPE_MASK);
+		serial_printf("non standard request: %x", request->bmRequestType & USB_REQ_TYPE_MASK);
 		return -1;	/* Stall here */
 	}
 
@@ -465,6 +462,8 @@
 		dbg_ep0 (1, "request %s not allowed in UNKNOWN state: %s",
 			 USBD_DEVICE_REQUESTS (request->bRequest),
 			 usbd_device_states[device->device_state]);
+		serial_printf("request %s not allowed in UNKNOWN state: %s", USBD_DEVICE_REQUESTS (request->bRequest), usbd_device_states[device->device_state]);
+		break;
 		return -1;
 	}
 
@@ -563,6 +562,7 @@
 			/*dbg_ep0(2, "address: %d %d %d", */
 			/*        request->wValue, le16_to_cpu(request->wValue), device->address); */
 
+			//udc_set_address(device->address);
 			return 0;
 
 		case USB_REQ_SET_DESCRIPTOR:	/* XXX should we support this? */
Index: u-boot/include/configs/neo1973_gta01.h
===================================================================