drivers/usb: regorganisation
move to linux usb driver organisation
as following
drivers/usb/gadget
drivers/usb/host
drivers/usb/musb
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Remy Bohmer <linux@bohmer.net>
diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile
new file mode 100644
index 0000000..251724f
--- /dev/null
+++ b/drivers/usb/gadget/Makefile
@@ -0,0 +1,52 @@
+#
+# (C) Copyright 2000-2007
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+include $(TOPDIR)/config.mk
+
+LIB := $(obj)libusb_gadget.a
+
+ifdef CONFIG_USB_DEVICE
+COBJS-y += core.o
+COBJS-y += ep0.o
+COBJS-$(CONFIG_OMAP1510) += omap1510_udc.o
+COBJS-$(CONFIG_OMAP1610) += omap1510_udc.o
+COBJS-$(CONFIG_MPC885_FAMILY) += mpc8xx_udc.o
+endif
+
+COBJS := $(COBJS-y)
+SRCS := $(COBJS:.o=.c)
+OBJS := $(addprefix $(obj),$(COBJS))
+
+all: $(LIB)
+
+$(LIB): $(obj).depend $(OBJS)
+ $(AR) $(ARFLAGS) $@ $(OBJS)
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/drivers/usb/gadget/core.c b/drivers/usb/gadget/core.c
new file mode 100644
index 0000000..67b6681
--- /dev/null
+++ b/drivers/usb/gadget/core.c
@@ -0,0 +1,683 @@
+/*
+ * (C) Copyright 2003
+ * Gerry Hamel, geh@ti.com, Texas Instruments
+ *
+ * Based on
+ * linux/drivers/usbd/usbd.c.c - USB Device Core Layer
+ *
+ * Copyright (c) 2000, 2001, 2002 Lineo
+ * Copyright (c) 2001 Hewlett Packard
+ *
+ * By:
+ * Stuart Lynne <sl@lineo.com>,
+ * Tom Rushworth <tbr@lineo.com>,
+ * Bruce Balden <balden@lineo.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <malloc.h>
+#include <usbdevice.h>
+
+#define MAX_INTERFACES 2
+
+
+int maxstrings = 20;
+
+/* Global variables ************************************************************************** */
+
+struct usb_string_descriptor **usb_strings;
+
+int usb_devices;
+
+extern struct usb_function_driver ep0_driver;
+
+int registered_functions;
+int registered_devices;
+
+char *usbd_device_events[] = {
+ "DEVICE_UNKNOWN",
+ "DEVICE_INIT",
+ "DEVICE_CREATE",
+ "DEVICE_HUB_CONFIGURED",
+ "DEVICE_RESET",
+ "DEVICE_ADDRESS_ASSIGNED",
+ "DEVICE_CONFIGURED",
+ "DEVICE_SET_INTERFACE",
+ "DEVICE_SET_FEATURE",
+ "DEVICE_CLEAR_FEATURE",
+ "DEVICE_DE_CONFIGURED",
+ "DEVICE_BUS_INACTIVE",
+ "DEVICE_BUS_ACTIVITY",
+ "DEVICE_POWER_INTERRUPTION",
+ "DEVICE_HUB_RESET",
+ "DEVICE_DESTROY",
+ "DEVICE_FUNCTION_PRIVATE",
+};
+
+char *usbd_device_states[] = {
+ "STATE_INIT",
+ "STATE_CREATED",
+ "STATE_ATTACHED",
+ "STATE_POWERED",
+ "STATE_DEFAULT",
+ "STATE_ADDRESSED",
+ "STATE_CONFIGURED",
+ "STATE_UNKNOWN",
+};
+
+char *usbd_device_requests[] = {
+ "GET STATUS", /* 0 */
+ "CLEAR FEATURE", /* 1 */
+ "RESERVED", /* 2 */
+ "SET FEATURE", /* 3 */
+ "RESERVED", /* 4 */
+ "SET ADDRESS", /* 5 */
+ "GET DESCRIPTOR", /* 6 */
+ "SET DESCRIPTOR", /* 7 */
+ "GET CONFIGURATION", /* 8 */
+ "SET CONFIGURATION", /* 9 */
+ "GET INTERFACE", /* 10 */
+ "SET INTERFACE", /* 11 */
+ "SYNC FRAME", /* 12 */
+};
+
+char *usbd_device_descriptors[] = {
+ "UNKNOWN", /* 0 */
+ "DEVICE", /* 1 */
+ "CONFIG", /* 2 */
+ "STRING", /* 3 */
+ "INTERFACE", /* 4 */
+ "ENDPOINT", /* 5 */
+ "DEVICE QUALIFIER", /* 6 */
+ "OTHER SPEED", /* 7 */
+ "INTERFACE POWER", /* 8 */
+};
+
+char *usbd_device_status[] = {
+ "USBD_OPENING",
+ "USBD_OK",
+ "USBD_SUSPENDED",
+ "USBD_CLOSING",
+};
+
+
+/* Descriptor support functions ************************************************************** */
+
+
+/**
+ * usbd_get_string - find and return a string descriptor
+ * @index: string index to return
+ *
+ * Find an indexed string and return a pointer to a it.
+ */
+struct usb_string_descriptor *usbd_get_string (__u8 index)
+{
+ if (index >= maxstrings) {
+ return NULL;
+ }
+ return usb_strings[index];
+}
+
+
+/* Access to device descriptor functions ***************************************************** */
+
+
+/* *
+ * usbd_device_configuration_instance - find a configuration instance for this device
+ * @device:
+ * @configuration: index to configuration, 0 - N-1
+ *
+ * Get specifed device configuration. Index should be bConfigurationValue-1.
+ */
+static struct usb_configuration_instance *usbd_device_configuration_instance (struct usb_device_instance *device,
+ unsigned int port, unsigned int configuration)
+{
+ if (configuration >= device->configurations)
+ return NULL;
+
+ return device->configuration_instance_array + configuration;
+}
+
+
+/* *
+ * usbd_device_interface_instance
+ * @device:
+ * @configuration: index to configuration, 0 - N-1
+ * @interface: index to interface
+ *
+ * Return the specified interface descriptor for the specified device.
+ */
+struct usb_interface_instance *usbd_device_interface_instance (struct usb_device_instance *device, int port, int configuration, int interface)
+{
+ struct usb_configuration_instance *configuration_instance;
+
+ if ((configuration_instance = usbd_device_configuration_instance (device, port, configuration)) == NULL) {
+ return NULL;
+ }
+ if (interface >= configuration_instance->interfaces) {
+ return NULL;
+ }
+ return configuration_instance->interface_instance_array + interface;
+}
+
+/* *
+ * usbd_device_alternate_descriptor_list
+ * @device:
+ * @configuration: index to configuration, 0 - N-1
+ * @interface: index to interface
+ * @alternate: alternate setting
+ *
+ * Return the specified alternate descriptor for the specified device.
+ */
+struct usb_alternate_instance *usbd_device_alternate_instance (struct usb_device_instance *device, int port, int configuration, int interface, int alternate)
+{
+ struct usb_interface_instance *interface_instance;
+
+ if ((interface_instance = usbd_device_interface_instance (device, port, configuration, interface)) == NULL) {
+ return NULL;
+ }
+
+ if (alternate >= interface_instance->alternates) {
+ return NULL;
+ }
+
+ return interface_instance->alternates_instance_array + alternate;
+}
+
+
+/* *
+ * usbd_device_device_descriptor
+ * @device: which device
+ * @configuration: index to configuration, 0 - N-1
+ * @port: which port
+ *
+ * Return the specified configuration descriptor for the specified device.
+ */
+struct usb_device_descriptor *usbd_device_device_descriptor (struct usb_device_instance *device, int port)
+{
+ return (device->device_descriptor);
+}
+
+
+/**
+ * usbd_device_configuration_descriptor
+ * @device: which device
+ * @port: which port
+ * @configuration: index to configuration, 0 - N-1
+ *
+ * Return the specified configuration descriptor for the specified device.
+ */
+struct usb_configuration_descriptor *usbd_device_configuration_descriptor (struct
+ usb_device_instance
+ *device, int port, int configuration)
+{
+ struct usb_configuration_instance *configuration_instance;
+ if (!(configuration_instance = usbd_device_configuration_instance (device, port, configuration))) {
+ return NULL;
+ }
+ return (configuration_instance->configuration_descriptor);
+}
+
+
+/**
+ * usbd_device_interface_descriptor
+ * @device: which device
+ * @port: which port
+ * @configuration: index to configuration, 0 - N-1
+ * @interface: index to interface
+ * @alternate: alternate setting
+ *
+ * Return the specified interface descriptor for the specified device.
+ */
+struct usb_interface_descriptor *usbd_device_interface_descriptor (struct usb_device_instance
+ *device, int port, int configuration, int interface, int alternate)
+{
+ struct usb_interface_instance *interface_instance;
+ if (!(interface_instance = usbd_device_interface_instance (device, port, configuration, interface))) {
+ return NULL;
+ }
+ if ((alternate < 0) || (alternate >= interface_instance->alternates)) {
+ return NULL;
+ }
+ return (interface_instance->alternates_instance_array[alternate].interface_descriptor);
+}
+
+/**
+ * usbd_device_endpoint_descriptor_index
+ * @device: which device
+ * @port: which port
+ * @configuration: index to configuration, 0 - N-1
+ * @interface: index to interface
+ * @alternate: index setting
+ * @index: which index
+ *
+ * Return the specified endpoint descriptor for the specified device.
+ */
+struct usb_endpoint_descriptor *usbd_device_endpoint_descriptor_index (struct usb_device_instance
+ *device, int port, int configuration, int interface, int alternate, int index)
+{
+ struct usb_alternate_instance *alternate_instance;
+
+ if (!(alternate_instance = usbd_device_alternate_instance (device, port, configuration, interface, alternate))) {
+ return NULL;
+ }
+ if (index >= alternate_instance->endpoints) {
+ return NULL;
+ }
+ return *(alternate_instance->endpoints_descriptor_array + index);
+}
+
+
+/**
+ * usbd_device_endpoint_transfersize
+ * @device: which device
+ * @port: which port
+ * @configuration: index to configuration, 0 - N-1
+ * @interface: index to interface
+ * @index: which index
+ *
+ * Return the specified endpoint transfer size;
+ */
+int usbd_device_endpoint_transfersize (struct usb_device_instance *device, int port, int configuration, int interface, int alternate, int index)
+{
+ struct usb_alternate_instance *alternate_instance;
+
+ if (!(alternate_instance = usbd_device_alternate_instance (device, port, configuration, interface, alternate))) {
+ return 0;
+ }
+ if (index >= alternate_instance->endpoints) {
+ return 0;
+ }
+ return *(alternate_instance->endpoint_transfersize_array + index);
+}
+
+
+/**
+ * usbd_device_endpoint_descriptor
+ * @device: which device
+ * @port: which port
+ * @configuration: index to configuration, 0 - N-1
+ * @interface: index to interface
+ * @alternate: alternate setting
+ * @endpoint: which endpoint
+ *
+ * Return the specified endpoint descriptor for the specified device.
+ */
+struct usb_endpoint_descriptor *usbd_device_endpoint_descriptor (struct usb_device_instance *device, int port, int configuration, int interface, int alternate, int endpoint)
+{
+ struct usb_endpoint_descriptor *endpoint_descriptor;
+ int i;
+
+ for (i = 0; !(endpoint_descriptor = usbd_device_endpoint_descriptor_index (device, port, configuration, interface, alternate, i)); i++) {
+ if (endpoint_descriptor->bEndpointAddress == endpoint) {
+ return endpoint_descriptor;
+ }
+ }
+ return NULL;
+}
+
+/**
+ * usbd_endpoint_halted
+ * @device: point to struct usb_device_instance
+ * @endpoint: endpoint to check
+ *
+ * Return non-zero if endpoint is halted.
+ */
+int usbd_endpoint_halted (struct usb_device_instance *device, int endpoint)
+{
+ return (device->status == USB_STATUS_HALT);
+}
+
+
+/**
+ * usbd_rcv_complete - complete a receive
+ * @endpoint:
+ * @len:
+ * @urb_bad:
+ *
+ * Called from rcv interrupt to complete.
+ */
+void usbd_rcv_complete(struct usb_endpoint_instance *endpoint, int len, int urb_bad)
+{
+ if (endpoint) {
+ struct urb *rcv_urb;
+
+ /*usbdbg("len: %d urb: %p\n", len, endpoint->rcv_urb); */
+
+ /* if we had an urb then update actual_length, dispatch if neccessary */
+ if ((rcv_urb = endpoint->rcv_urb)) {
+
+ /*usbdbg("actual: %d buffer: %d\n", */
+ /*rcv_urb->actual_length, rcv_urb->buffer_length); */
+
+ /* check the urb is ok, are we adding data less than the packetsize */
+ if (!urb_bad && (len <= endpoint->rcv_packetSize)) {
+ /*usbdbg("updating actual_length by %d\n",len); */
+
+ /* increment the received data size */
+ rcv_urb->actual_length += len;
+
+ } else {
+ usberr(" RECV_ERROR actual: %d buffer: %d urb_bad: %d\n",
+ rcv_urb->actual_length, rcv_urb->buffer_length, urb_bad);
+
+ rcv_urb->actual_length = 0;
+ rcv_urb->status = RECV_ERROR;
+ }
+ } else {
+ usberr("no rcv_urb!");
+ }
+ } else {
+ usberr("no endpoint!");
+ }
+
+}
+
+/**
+ * usbd_tx_complete - complete a transmit
+ * @endpoint:
+ * @resetart:
+ *
+ * Called from tx interrupt to complete.
+ */
+void usbd_tx_complete (struct usb_endpoint_instance *endpoint)
+{
+ if (endpoint) {
+ struct urb *tx_urb;
+
+ /* if we have a tx_urb advance or reset, finish if complete */
+ if ((tx_urb = endpoint->tx_urb)) {
+ int sent = endpoint->last;
+ endpoint->sent += sent;
+ endpoint->last -= sent;
+
+ if( (endpoint->tx_urb->actual_length - endpoint->sent) <= 0 ) {
+ tx_urb->actual_length = 0;
+ endpoint->sent = 0;
+ endpoint->last = 0;
+
+ /* Remove from active, save for re-use */
+ urb_detach(tx_urb);
+ urb_append(&endpoint->done, tx_urb);
+ /*usbdbg("done->next %p, tx_urb %p, done %p", */
+ /* endpoint->done.next, tx_urb, &endpoint->done); */
+
+ endpoint->tx_urb = first_urb_detached(&endpoint->tx);
+ if( endpoint->tx_urb ) {
+ endpoint->tx_queue--;
+ usbdbg("got urb from tx list");
+ }
+ if( !endpoint->tx_urb ) {
+ /*usbdbg("taking urb from done list"); */
+ endpoint->tx_urb = first_urb_detached(&endpoint->done);
+ }
+ if( !endpoint->tx_urb ) {
+ usbdbg("allocating new urb for tx_urb");
+ endpoint->tx_urb = usbd_alloc_urb(tx_urb->device, endpoint);
+ }
+ }
+ }
+ }
+}
+
+/* URB linked list functions ***************************************************** */
+
+/*
+ * Initialize an urb_link to be a single element list.
+ * If the urb_link is being used as a distinguished list head
+ * the list is empty when the head is the only link in the list.
+ */
+void urb_link_init (urb_link * ul)
+{
+ if (ul) {
+ ul->prev = ul->next = ul;
+ }
+}
+
+/*
+ * Detach an urb_link from a list, and set it
+ * up as a single element list, so no dangling
+ * pointers can be followed, and so it can be
+ * joined to another list if so desired.
+ */
+void urb_detach (struct urb *urb)
+{
+ if (urb) {
+ urb_link *ul = &urb->link;
+ ul->next->prev = ul->prev;
+ ul->prev->next = ul->next;
+ urb_link_init (ul);
+ }
+}
+
+/*
+ * Return the first urb_link in a list with a distinguished
+ * head "hd", or NULL if the list is empty. This will also
+ * work as a predicate, returning NULL if empty, and non-NULL
+ * otherwise.
+ */
+urb_link *first_urb_link (urb_link * hd)
+{
+ urb_link *nx;
+ if (NULL != hd && NULL != (nx = hd->next) && nx != hd) {
+ /* There is at least one element in the list */
+ /* (besides the distinguished head). */
+ return (nx);
+ }
+ /* The list is empty */
+ return (NULL);
+}
+
+/*
+ * Return the first urb in a list with a distinguished
+ * head "hd", or NULL if the list is empty.
+ */
+struct urb *first_urb (urb_link * hd)
+{
+ urb_link *nx;
+ if (NULL == (nx = first_urb_link (hd))) {
+ /* The list is empty */
+ return (NULL);
+ }
+ return (p2surround (struct urb, link, nx));
+}
+
+/*
+ * Detach and return the first urb in a list with a distinguished
+ * head "hd", or NULL if the list is empty.
+ *
+ */
+struct urb *first_urb_detached (urb_link * hd)
+{
+ struct urb *urb;
+ if ((urb = first_urb (hd))) {
+ urb_detach (urb);
+ }
+ return urb;
+}
+
+
+/*
+ * Append an urb_link (or a whole list of
+ * urb_links) to the tail of another list
+ * of urb_links.
+ */
+void urb_append (urb_link * hd, struct urb *urb)
+{
+ if (hd && urb) {
+ urb_link *new = &urb->link;
+
+ /* This allows the new urb to be a list of urbs, */
+ /* with new pointing at the first, but the link */
+ /* must be initialized. */
+ /* Order is important here... */
+ urb_link *pul = hd->prev;
+ new->prev->next = hd;
+ hd->prev = new->prev;
+ new->prev = pul;
+ pul->next = new;
+ }
+}
+
+/* URB create/destroy functions ***************************************************** */
+
+/**
+ * usbd_alloc_urb - allocate an URB appropriate for specified endpoint
+ * @device: device instance
+ * @endpoint: endpoint
+ *
+ * Allocate an urb structure. The usb device urb structure is used to
+ * contain all data associated with a transfer, including a setup packet for
+ * control transfers.
+ *
+ * NOTE: endpoint_address MUST contain a direction flag.
+ */
+struct urb *usbd_alloc_urb (struct usb_device_instance *device,
+ struct usb_endpoint_instance *endpoint)
+{
+ struct urb *urb;
+
+ if (!(urb = (struct urb *) malloc (sizeof (struct urb)))) {
+ usberr (" F A T A L: malloc(%zu) FAILED!!!!",
+ sizeof (struct urb));
+ return NULL;
+ }
+
+ /* Fill in known fields */
+ memset (urb, 0, sizeof (struct urb));
+ urb->endpoint = endpoint;
+ urb->device = device;
+ urb->buffer = (u8 *) urb->buffer_data;
+ urb->buffer_length = sizeof (urb->buffer_data);
+
+ urb_link_init (&urb->link);
+
+ return urb;
+}
+
+/**
+ * usbd_dealloc_urb - deallocate an URB and associated buffer
+ * @urb: pointer to an urb structure
+ *
+ * Deallocate an urb structure and associated data.
+ */
+void usbd_dealloc_urb (struct urb *urb)
+{
+ if (urb) {
+ free (urb);
+ }
+}
+
+/* Event signaling functions ***************************************************** */
+
+/**
+ * usbd_device_event - called to respond to various usb events
+ * @device: pointer to struct device
+ * @event: event to respond to
+ *
+ * Used by a Bus driver to indicate an event.
+ */
+void usbd_device_event_irq (struct usb_device_instance *device, usb_device_event_t event, int data)
+{
+ usb_device_state_t state;
+
+ if (!device || !device->bus) {
+ usberr("(%p,%d) NULL device or device->bus", device, event);
+ return;
+ }
+
+ state = device->device_state;
+
+ usbinfo("%s", usbd_device_events[event]);
+
+ switch (event) {
+ case DEVICE_UNKNOWN:
+ break;
+ case DEVICE_INIT:
+ device->device_state = STATE_INIT;
+ break;
+
+ case DEVICE_CREATE:
+ device->device_state = STATE_ATTACHED;
+ break;
+
+ case DEVICE_HUB_CONFIGURED:
+ device->device_state = STATE_POWERED;
+ break;
+
+ case DEVICE_RESET:
+ device->device_state = STATE_DEFAULT;
+ device->address = 0;
+ break;
+
+ case DEVICE_ADDRESS_ASSIGNED:
+ device->device_state = STATE_ADDRESSED;
+ break;
+
+ case DEVICE_CONFIGURED:
+ device->device_state = STATE_CONFIGURED;
+ break;
+
+ case DEVICE_DE_CONFIGURED:
+ device->device_state = STATE_ADDRESSED;
+ break;
+
+ case DEVICE_BUS_INACTIVE:
+ if (device->status != USBD_CLOSING) {
+ device->status = USBD_SUSPENDED;
+ }
+ break;
+ case DEVICE_BUS_ACTIVITY:
+ if (device->status != USBD_CLOSING) {
+ device->status = USBD_OK;
+ }
+ break;
+
+ case DEVICE_SET_INTERFACE:
+ break;
+ case DEVICE_SET_FEATURE:
+ break;
+ case DEVICE_CLEAR_FEATURE:
+ break;
+
+ case DEVICE_POWER_INTERRUPTION:
+ device->device_state = STATE_POWERED;
+ break;
+ case DEVICE_HUB_RESET:
+ device->device_state = STATE_ATTACHED;
+ break;
+ case DEVICE_DESTROY:
+ device->device_state = STATE_UNKNOWN;
+ break;
+
+ case DEVICE_FUNCTION_PRIVATE:
+ break;
+
+ default:
+ usbdbg("event %d - not handled",event);
+ break;
+ }
+ /*usbdbg("%s event: %d oldstate: %d newstate: %d status: %d address: %d",
+ device->name, event, state,
+ device->device_state, device->status, device->address); */
+
+ /* tell the bus interface driver */
+ if( device->event ) {
+ /* usbdbg("calling device->event"); */
+ device->event(device, event, data);
+ }
+}
diff --git a/drivers/usb/gadget/ep0.c b/drivers/usb/gadget/ep0.c
new file mode 100644
index 0000000..2b4ec44
--- /dev/null
+++ b/drivers/usb/gadget/ep0.c
@@ -0,0 +1,597 @@
+/*
+ * (C) Copyright 2003
+ * Gerry Hamel, geh@ti.com, Texas Instruments
+ *
+ * (C) Copyright 2006
+ * Bryan O'Donoghue, deckard@CodeHermit.ie
+ *
+ * Based on
+ * linux/drivers/usbd/ep0.c
+ *
+ * Copyright (c) 2000, 2001, 2002 Lineo
+ * Copyright (c) 2001 Hewlett Packard
+ *
+ * By:
+ * Stuart Lynne <sl@lineo.com>,
+ * Tom Rushworth <tbr@lineo.com>,
+ * Bruce Balden <balden@lineo.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+/*
+ * This is the builtin ep0 control function. It implements all required functionality
+ * for responding to control requests (SETUP packets).
+ *
+ * XXX
+ *
+ * Currently we do not pass any SETUP packets (or other) to the configured
+ * function driver. This may need to change.
+ *
+ * XXX
+ *
+ * As alluded to above, a simple callback cdc_recv_setup has been implemented
+ * in the usb_device data structure to facilicate passing
+ * Common Device Class packets to a function driver.
+ *
+ * XXX
+ */
+
+#include <common.h>
+#include <usbdevice.h>
+
+#if 0
+#define dbg_ep0(lvl,fmt,args...) serial_printf("[%s] %s:%d: "fmt"\n",__FILE__,__FUNCTION__,__LINE__,##args)
+#else
+#define dbg_ep0(lvl,fmt,args...)
+#endif
+
+/* EP0 Configuration Set ********************************************************************* */
+
+
+/**
+ * ep0_get_status - fill in URB data with appropriate status
+ * @device:
+ * @urb:
+ * @index:
+ * @requesttype:
+ *
+ */
+static int ep0_get_status (struct usb_device_instance *device,
+ struct urb *urb, int index, int requesttype)
+{
+ char *cp;
+
+ urb->actual_length = 2;
+ cp = (char*)urb->buffer;
+ cp[0] = cp[1] = 0;
+
+ switch (requesttype) {
+ case USB_REQ_RECIPIENT_DEVICE:
+ cp[0] = USB_STATUS_SELFPOWERED;
+ break;
+ case USB_REQ_RECIPIENT_INTERFACE:
+ break;
+ case USB_REQ_RECIPIENT_ENDPOINT:
+ cp[0] = usbd_endpoint_halted (device, index);
+ break;
+ case USB_REQ_RECIPIENT_OTHER:
+ urb->actual_length = 0;
+ default:
+ break;
+ }
+ dbg_ep0 (2, "%02x %02x", cp[0], cp[1]);
+ return 0;
+}
+
+/**
+ * ep0_get_one
+ * @device:
+ * @urb:
+ * @result:
+ *
+ * Set a single byte value in the urb send buffer. Return non-zero to signal
+ * a request error.
+ */
+static int ep0_get_one (struct usb_device_instance *device, struct urb *urb,
+ __u8 result)
+{
+ urb->actual_length = 1; /* XXX 2? */
+ ((char *) urb->buffer)[0] = result;
+ return 0;
+}
+
+/**
+ * copy_config
+ * @urb: pointer to urb
+ * @data: pointer to configuration data
+ * @length: length of data
+ *
+ * Copy configuration data to urb transfer buffer if there is room for it.
+ */
+void copy_config (struct urb *urb, void *data, int max_length,
+ int max_buf)
+{
+ int available;
+ int length;
+
+ /*dbg_ep0(3, "-> actual: %d buf: %d max_buf: %d max_length: %d data: %p", */
+ /* urb->actual_length, urb->buffer_length, max_buf, max_length, data); */
+
+ if (!data) {
+ dbg_ep0 (1, "data is NULL");
+ return;
+ }
+ length = max_length;
+
+ if (length > max_length) {
+ dbg_ep0 (1, "length: %d >= max_length: %d", length,
+ max_length);
+ return;
+ }
+ /*dbg_ep0(1, " actual: %d buf: %d max_buf: %d max_length: %d length: %d", */
+ /* urb->actual_length, urb->buffer_length, max_buf, max_length, length); */
+
+ if ((available =
+ /*urb->buffer_length */ max_buf - urb->actual_length) <= 0) {
+ return;
+ }
+ /*dbg_ep0(1, "actual: %d buf: %d max_buf: %d length: %d available: %d", */
+ /* urb->actual_length, urb->buffer_length, max_buf, length, available); */
+
+ if (length > available) {
+ length = available;
+ }
+ /*dbg_ep0(1, "actual: %d buf: %d max_buf: %d length: %d available: %d", */
+ /* urb->actual_length, urb->buffer_length, max_buf, length, available); */
+
+ memcpy (urb->buffer + urb->actual_length, data, length);
+ urb->actual_length += length;
+
+ dbg_ep0 (3,
+ "copy_config: <- actual: %d buf: %d max_buf: %d max_length: %d available: %d",
+ urb->actual_length, urb->buffer_length, max_buf, max_length,
+ available);
+}
+
+/**
+ * ep0_get_descriptor
+ * @device:
+ * @urb:
+ * @max:
+ * @descriptor_type:
+ * @index:
+ *
+ * Called by ep0_rx_process for a get descriptor device command. Determine what
+ * descriptor is being requested, copy to send buffer. Return zero if ok to send,
+ * return non-zero to signal a request error.
+ */
+static int ep0_get_descriptor (struct usb_device_instance *device,
+ struct urb *urb, int max, int descriptor_type,
+ int index)
+{
+ int port = 0; /* XXX compound device */
+ char *cp;
+
+ /*dbg_ep0(3, "max: %x type: %x index: %x", max, descriptor_type, index); */
+
+ if (!urb || !urb->buffer || !urb->buffer_length
+ || (urb->buffer_length < 255)) {
+ dbg_ep0 (2, "invalid urb %p", urb);
+ return -1L;
+ }
+
+ /* setup tx urb */
+ urb->actual_length = 0;
+ cp = (char*)urb->buffer;
+
+ dbg_ep0 (2, "%s", USBD_DEVICE_DESCRIPTORS (descriptor_type));
+
+ switch (descriptor_type) {
+ case USB_DESCRIPTOR_TYPE_DEVICE:
+ {
+ struct usb_device_descriptor *device_descriptor;
+ if (!
+ (device_descriptor =
+ 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;
+
+ }
+ dbg_ep0(3, "copied device configuration, actual_length: 0x%x", urb->actual_length);
+ break;
+
+ case USB_DESCRIPTOR_TYPE_CONFIGURATION:
+ {
+ struct usb_configuration_descriptor
+ *configuration_descriptor;
+ struct usb_device_descriptor *device_descriptor;
+ if (!
+ (device_descriptor =
+ usbd_device_device_descriptor (device, port))) {
+ return -1;
+ }
+ /*dbg_ep0(2, "%d %d", index, device_descriptor->bNumConfigurations); */
+ if (index >= device_descriptor->bNumConfigurations) {
+ dbg_ep0 (0, "index too large: %d >= %d", index,
+ device_descriptor->
+ bNumConfigurations);
+ return -1;
+ }
+
+ if (!
+ (configuration_descriptor =
+ usbd_device_configuration_descriptor (device,
+ port,
+ index))) {
+ dbg_ep0 (0,
+ "usbd_device_configuration_descriptor failed: %d",
+ 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);
+ }
+
+ break;
+
+ case USB_DESCRIPTOR_TYPE_STRING:
+ {
+ struct usb_string_descriptor *string_descriptor;
+ if (!(string_descriptor = usbd_get_string (index))) {
+ serial_printf("Invalid string index %d\n", index);
+ return -1;
+ }
+ dbg_ep0(3, "string_descriptor: %p length %d", string_descriptor, string_descriptor->bLength);
+ copy_config (urb, string_descriptor, string_descriptor->bLength, max);
+ }
+ break;
+ case USB_DESCRIPTOR_TYPE_INTERFACE:
+ serial_printf("USB_DESCRIPTOR_TYPE_INTERFACE - error not implemented\n");
+ return -1;
+ case USB_DESCRIPTOR_TYPE_ENDPOINT:
+ serial_printf("USB_DESCRIPTOR_TYPE_ENDPOINT - error not implemented\n");
+ return -1;
+ case USB_DESCRIPTOR_TYPE_HID:
+ {
+ serial_printf("USB_DESCRIPTOR_TYPE_HID - error not implemented\n");
+ return -1; /* unsupported at this time */
+#if 0
+ int bNumInterface =
+ le16_to_cpu (urb->device_request.wIndex);
+ int bAlternateSetting = 0;
+ int class = 0;
+ struct usb_class_descriptor *class_descriptor;
+
+ if (!(class_descriptor =
+ usbd_device_class_descriptor_index (device,
+ port, 0,
+ bNumInterface,
+ bAlternateSetting,
+ class))
+ || class_descriptor->descriptor.hid.bDescriptorType != USB_DT_HID) {
+ dbg_ep0 (3, "[%d] interface is not HID",
+ bNumInterface);
+ return -1;
+ }
+ /* copy descriptor for this class */
+ copy_config (urb, class_descriptor,
+ class_descriptor->descriptor.hid.bLength,
+ max);
+#endif
+ }
+ break;
+ case USB_DESCRIPTOR_TYPE_REPORT:
+ {
+ serial_printf("USB_DESCRIPTOR_TYPE_REPORT - error not implemented\n");
+ return -1; /* unsupported at this time */
+#if 0
+ int bNumInterface =
+ le16_to_cpu (urb->device_request.wIndex);
+ int bAlternateSetting = 0;
+ int class = 0;
+ struct usb_class_report_descriptor *report_descriptor;
+
+ if (!(report_descriptor =
+ usbd_device_class_report_descriptor_index
+ (device, port, 0, bNumInterface,
+ bAlternateSetting, class))
+ || report_descriptor->bDescriptorType !=
+ USB_DT_REPORT) {
+ dbg_ep0 (3, "[%d] descriptor is not REPORT",
+ bNumInterface);
+ return -1;
+ }
+ /* copy report descriptor for this class */
+ /*copy_config(urb, &report_descriptor->bData[0], report_descriptor->wLength, max); */
+ if (max - urb->actual_length > 0) {
+ int length =
+ MIN (report_descriptor->wLength,
+ max - urb->actual_length);
+ memcpy (urb->buffer + urb->actual_length,
+ &report_descriptor->bData[0], length);
+ urb->actual_length += length;
+ }
+#endif
+ }
+ break;
+ case USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER:
+ {
+ /* If a USB device supports both a full speed and low speed operation
+ * we must send a Device_Qualifier descriptor here
+ */
+ return -1;
+ }
+ default:
+ return -1;
+ }
+
+
+ dbg_ep0 (1, "urb: buffer: %p buffer_length: %2d actual_length: %2d tx_packetSize: %2d",
+ urb->buffer, urb->buffer_length, urb->actual_length,
+ device->bus->endpoint_array[0].tx_packetSize);
+/*
+ if ((urb->actual_length < max) && !(urb->actual_length % device->bus->endpoint_array[0].tx_packetSize)) {
+ dbg_ep0(0, "adding null byte");
+ urb->buffer[urb->actual_length++] = 0;
+ dbg_ep0(0, "urb: buffer_length: %2d actual_length: %2d packet size: %2d",
+ urb->buffer_length, urb->actual_length device->bus->endpoint_array[0].tx_packetSize);
+ }
+*/
+ return 0;
+
+}
+
+/**
+ * ep0_recv_setup - called to indicate URB has been received
+ * @urb: pointer to struct urb
+ *
+ * Check if this is a setup packet, process the device request, put results
+ * back into the urb and return zero or non-zero to indicate success (DATA)
+ * or failure (STALL).
+ *
+ */
+int ep0_recv_setup (struct urb *urb)
+{
+ /*struct usb_device_request *request = urb->buffer; */
+ /*struct usb_device_instance *device = urb->device; */
+
+ struct usb_device_request *request;
+ struct usb_device_instance *device;
+ int address;
+
+ dbg_ep0 (0, "entering ep0_recv_setup()");
+ if (!urb || !urb->device) {
+ dbg_ep0 (3, "invalid URB %p", urb);
+ return -1;
+ }
+
+ request = &urb->device_request;
+ device = urb->device;
+
+ dbg_ep0 (3, "urb: %p device: %p", urb, urb->device);
+
+
+ /*dbg_ep0(2, "- - - - - - - - - -"); */
+
+ dbg_ep0 (2,
+ "bmRequestType:%02x bRequest:%02x wValue:%04x wIndex:%04x wLength:%04x %s",
+ request->bmRequestType, request->bRequest,
+ le16_to_cpu (request->wValue), le16_to_cpu (request->wIndex),
+ le16_to_cpu (request->wLength),
+ USBD_DEVICE_REQUESTS (request->bRequest));
+
+ /* handle USB Standard Request (c.f. USB Spec table 9-2) */
+ if ((request->bmRequestType & USB_REQ_TYPE_MASK) != 0) {
+ if(device->device_state <= STATE_CONFIGURED){
+ /* Attempt to handle a CDC specific request if we are
+ * in the configured state.
+ */
+ return device->cdc_recv_setup(request,urb);
+ }
+ dbg_ep0 (1, "non standard request: %x",
+ request->bmRequestType & USB_REQ_TYPE_MASK);
+ return -1; /* Stall here */
+ }
+
+ switch (device->device_state) {
+ case STATE_CREATED:
+ case STATE_ATTACHED:
+ case STATE_POWERED:
+ /* It actually is important to allow requests in these states,
+ * Windows will request descriptors before assigning an
+ * address to the client.
+ */
+
+ /*dbg_ep0 (1, "request %s not allowed in this state: %s", */
+ /* USBD_DEVICE_REQUESTS(request->bRequest), */
+ /* usbd_device_states[device->device_state]); */
+ /*return -1; */
+ break;
+
+ case STATE_INIT:
+ case STATE_DEFAULT:
+ switch (request->bRequest) {
+ case USB_REQ_GET_STATUS:
+ case USB_REQ_GET_INTERFACE:
+ case USB_REQ_SYNCH_FRAME: /* XXX should never see this (?) */
+ case USB_REQ_CLEAR_FEATURE:
+ case USB_REQ_SET_FEATURE:
+ case USB_REQ_SET_DESCRIPTOR:
+ /* case USB_REQ_SET_CONFIGURATION: */
+ case USB_REQ_SET_INTERFACE:
+ dbg_ep0 (1,
+ "request %s not allowed in DEFAULT state: %s",
+ USBD_DEVICE_REQUESTS (request->bRequest),
+ usbd_device_states[device->device_state]);
+ return -1;
+
+ case USB_REQ_SET_CONFIGURATION:
+ case USB_REQ_SET_ADDRESS:
+ case USB_REQ_GET_DESCRIPTOR:
+ case USB_REQ_GET_CONFIGURATION:
+ break;
+ }
+ case STATE_ADDRESSED:
+ case STATE_CONFIGURED:
+ break;
+ case STATE_UNKNOWN:
+ dbg_ep0 (1, "request %s not allowed in UNKNOWN state: %s",
+ USBD_DEVICE_REQUESTS (request->bRequest),
+ usbd_device_states[device->device_state]);
+ return -1;
+ }
+
+ /* handle all requests that return data (direction bit set on bm RequestType) */
+ if ((request->bmRequestType & USB_REQ_DIRECTION_MASK)) {
+
+ dbg_ep0 (3, "Device-to-Host");
+
+ switch (request->bRequest) {
+
+ case USB_REQ_GET_STATUS:
+ return ep0_get_status (device, urb, request->wIndex,
+ request->bmRequestType &
+ USB_REQ_RECIPIENT_MASK);
+
+ case USB_REQ_GET_DESCRIPTOR:
+ return ep0_get_descriptor (device, urb,
+ le16_to_cpu (request->wLength),
+ le16_to_cpu (request->wValue) >> 8,
+ le16_to_cpu (request->wValue) & 0xff);
+
+ case USB_REQ_GET_CONFIGURATION:
+ serial_printf("get config %d\n", device->configuration);
+ return ep0_get_one (device, urb,
+ device->configuration);
+
+ case USB_REQ_GET_INTERFACE:
+ return ep0_get_one (device, urb, device->alternate);
+
+ case USB_REQ_SYNCH_FRAME: /* XXX should never see this (?) */
+ return -1;
+
+ case USB_REQ_CLEAR_FEATURE:
+ case USB_REQ_SET_FEATURE:
+ case USB_REQ_SET_ADDRESS:
+ case USB_REQ_SET_DESCRIPTOR:
+ case USB_REQ_SET_CONFIGURATION:
+ case USB_REQ_SET_INTERFACE:
+ return -1;
+ }
+ }
+ /* handle the requests that do not return data */
+ else {
+
+
+ /*dbg_ep0(3, "Host-to-Device"); */
+ switch (request->bRequest) {
+
+ case USB_REQ_CLEAR_FEATURE:
+ case USB_REQ_SET_FEATURE:
+ dbg_ep0 (0, "Host-to-Device");
+ switch (request->
+ bmRequestType & USB_REQ_RECIPIENT_MASK) {
+ case USB_REQ_RECIPIENT_DEVICE:
+ /* XXX DEVICE_REMOTE_WAKEUP or TEST_MODE would be added here */
+ /* XXX fall through for now as we do not support either */
+ case USB_REQ_RECIPIENT_INTERFACE:
+ case USB_REQ_RECIPIENT_OTHER:
+ dbg_ep0 (0, "request %s not",
+ USBD_DEVICE_REQUESTS (request->bRequest));
+ default:
+ return -1;
+
+ case USB_REQ_RECIPIENT_ENDPOINT:
+ dbg_ep0 (0, "ENDPOINT: %x", le16_to_cpu (request->wValue));
+ if (le16_to_cpu (request->wValue) == USB_ENDPOINT_HALT) {
+ /*return usbd_device_feature (device, le16_to_cpu (request->wIndex), */
+ /* request->bRequest == USB_REQ_SET_FEATURE); */
+ /* NEED TO IMPLEMENT THIS!!! */
+ return -1;
+ } else {
+ dbg_ep0 (1, "request %s bad wValue: %04x",
+ USBD_DEVICE_REQUESTS
+ (request->bRequest),
+ le16_to_cpu (request->wValue));
+ return -1;
+ }
+ }
+
+ case USB_REQ_SET_ADDRESS:
+ /* check if this is a re-address, reset first if it is (this shouldn't be possible) */
+ if (device->device_state != STATE_DEFAULT) {
+ dbg_ep0 (1, "set_address: %02x state: %s",
+ le16_to_cpu (request->wValue),
+ usbd_device_states[device->device_state]);
+ return -1;
+ }
+ address = le16_to_cpu (request->wValue);
+ if ((address & 0x7f) != address) {
+ dbg_ep0 (1, "invalid address %04x %04x",
+ address, address & 0x7f);
+ return -1;
+ }
+ device->address = address;
+
+ /*dbg_ep0(2, "address: %d %d %d", */
+ /* request->wValue, le16_to_cpu(request->wValue), device->address); */
+
+ return 0;
+
+ case USB_REQ_SET_DESCRIPTOR: /* XXX should we support this? */
+ dbg_ep0 (0, "set descriptor: NOT SUPPORTED");
+ return -1;
+
+ case USB_REQ_SET_CONFIGURATION:
+ /* c.f. 9.4.7 - the top half of wValue is reserved */
+ device->configuration = le16_to_cpu(request->wValue) & 0xff;
+
+ /* reset interface and alternate settings */
+ device->interface = device->alternate = 0;
+
+ /*dbg_ep0(2, "set configuration: %d", device->configuration); */
+ /*serial_printf("DEVICE_CONFIGURED.. event?\n"); */
+ return 0;
+
+ case USB_REQ_SET_INTERFACE:
+ device->interface = le16_to_cpu (request->wIndex);
+ device->alternate = le16_to_cpu (request->wValue);
+ /*dbg_ep0(2, "set interface: %d alternate: %d", device->interface, device->alternate); */
+ serial_printf ("DEVICE_SET_INTERFACE.. event?\n");
+ return 0;
+
+ case USB_REQ_GET_STATUS:
+ case USB_REQ_GET_DESCRIPTOR:
+ case USB_REQ_GET_CONFIGURATION:
+ case USB_REQ_GET_INTERFACE:
+ case USB_REQ_SYNCH_FRAME: /* XXX should never see this (?) */
+ return -1;
+ }
+ }
+ return -1;
+}
diff --git a/drivers/usb/gadget/ep0.h b/drivers/usb/gadget/ep0.h
new file mode 100644
index 0000000..3bec106
--- /dev/null
+++ b/drivers/usb/gadget/ep0.h
@@ -0,0 +1,39 @@
+/*
+ * (C) Copyright 2003
+ * Gerry Hamel, geh@ti.com, Texas Instruments
+ *
+ * Based on
+ * linux/drivers/usbd/ep0.c
+ *
+ * Copyright (c) 2000, 2001, 2002 Lineo
+ * Copyright (c) 2001 Hewlett Packard
+ *
+ * By:
+ * Stuart Lynne <sl@lineo.com>,
+ * Tom Rushworth <tbr@lineo.com>,
+ * Bruce Balden <balden@lineo.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#ifndef __USBDCORE_EP0_H__
+#define __USBDCORE_EP0_H__
+
+
+int ep0_recv_setup (struct urb *urb);
+
+
+#endif
diff --git a/drivers/usb/gadget/mpc8xx_udc.c b/drivers/usb/gadget/mpc8xx_udc.c
new file mode 100644
index 0000000..da3fbba
--- /dev/null
+++ b/drivers/usb/gadget/mpc8xx_udc.c
@@ -0,0 +1,1399 @@
+/*
+ * Copyright (C) 2006 by Bryan O'Donoghue, CodeHermit
+ * bodonoghue@CodeHermit.ie
+ *
+ * References
+ * DasUBoot/drivers/usb/gadget/omap1510_udc.c, for design and implementation
+ * ideas.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the
+ * Free Software Foundation, Inc.,
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+/*
+ * Notes :
+ * 1. #define __SIMULATE_ERROR__ to inject a CRC error into every 2nd TX
+ * packet to force the USB re-transmit protocol.
+ *
+ * 2. #define __DEBUG_UDC__ to switch on debug tracing to serial console
+ * be careful that tracing doesn't create Hiesen-bugs with respect to
+ * response timeouts to control requests.
+ *
+ * 3. This driver should be able to support any higher level driver that
+ * that wants to do either of the two standard UDC implementations
+ * Control-Bulk-Interrupt or Bulk-IN/Bulk-Out standards. Hence
+ * gserial and cdc_acm should work with this code.
+ *
+ * 4. NAK events never actually get raised at all, the documentation
+ * is just wrong !
+ *
+ * 5. For some reason, cbd_datlen is *always* +2 the value it should be.
+ * this means that having an RX cbd of 16 bytes is not possible, since
+ * the same size is reported for 14 bytes received as 16 bytes received
+ * until we can find out why this happens, RX cbds must be limited to 8
+ * bytes. TODO: check errata for this behaviour.
+ *
+ * 6. Right now this code doesn't support properly powering up with the USB
+ * cable attached to the USB host my development board the Adder87x doesn't
+ * have a pull-up fitted to allow this, so it is necessary to power the
+ * board and *then* attached the USB cable to the host. However somebody
+ * with a different design in their board may be able to keep the cable
+ * constantly connected and simply enable/disable a pull-up re
+ * figure 31.1 in MPC885RM.pdf instead of having to power up the board and
+ * then attach the cable !
+ *
+ */
+#include <common.h>
+#include <config.h>
+#include <commproc.h>
+#include <usbdevice.h>
+#include <usb/mpc8xx_udc.h>
+
+#include "ep0.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define ERR(fmt, args...)\
+ serial_printf("ERROR : [%s] %s:%d: "fmt,\
+ __FILE__,__FUNCTION__,__LINE__, ##args)
+#ifdef __DEBUG_UDC__
+#define DBG(fmt,args...)\
+ serial_printf("[%s] %s:%d: "fmt,\
+ __FILE__,__FUNCTION__,__LINE__, ##args)
+#else
+#define DBG(fmt,args...)
+#endif
+
+/* Static Data */
+#ifdef __SIMULATE_ERROR__
+static char err_poison_test = 0;
+#endif
+static struct mpc8xx_ep ep_ref[MAX_ENDPOINTS];
+static u32 address_base = STATE_NOT_READY;
+static mpc8xx_udc_state_t udc_state = 0;
+static struct usb_device_instance *udc_device = 0;
+static volatile usb_epb_t *endpoints[MAX_ENDPOINTS];
+static volatile cbd_t *tx_cbd[TX_RING_SIZE];
+static volatile cbd_t *rx_cbd[RX_RING_SIZE];
+static volatile immap_t *immr = 0;
+static volatile cpm8xx_t *cp = 0;
+static volatile usb_pram_t *usb_paramp = 0;
+static volatile usb_t *usbp = 0;
+static int rx_ct = 0;
+static int tx_ct = 0;
+
+/* Static Function Declarations */
+static void mpc8xx_udc_state_transition_up (usb_device_state_t initial,
+ usb_device_state_t final);
+static void mpc8xx_udc_state_transition_down (usb_device_state_t initial,
+ usb_device_state_t final);
+static void mpc8xx_udc_stall (unsigned int ep);
+static void mpc8xx_udc_flush_tx_fifo (int epid);
+static void mpc8xx_udc_flush_rx_fifo (void);
+static void mpc8xx_udc_clear_rxbd (volatile cbd_t * rx_cbdp);
+static void mpc8xx_udc_init_tx (struct usb_endpoint_instance *epi,
+ struct urb *tx_urb);
+static void mpc8xx_udc_dump_request (struct usb_device_request *request);
+static void mpc8xx_udc_clock_init (volatile immap_t * immr,
+ volatile cpm8xx_t * cp);
+static int mpc8xx_udc_ep_tx (struct usb_endpoint_instance *epi);
+static int mpc8xx_udc_epn_rx (unsigned int epid, volatile cbd_t * rx_cbdp);
+static void mpc8xx_udc_ep0_rx (volatile cbd_t * rx_cbdp);
+static void mpc8xx_udc_cbd_init (void);
+static void mpc8xx_udc_endpoint_init (void);
+static void mpc8xx_udc_cbd_attach (int ep, uchar tx_size, uchar rx_size);
+static u32 mpc8xx_udc_alloc (u32 data_size, u32 alignment);
+static int mpc8xx_udc_ep0_rx_setup (volatile cbd_t * rx_cbdp);
+static void mpc8xx_udc_set_nak (unsigned int ep);
+static short mpc8xx_udc_handle_txerr (void);
+static void mpc8xx_udc_advance_rx (volatile cbd_t ** rx_cbdp, int epid);
+
+/******************************************************************************
+ Global Linkage
+ *****************************************************************************/
+
+/* udc_init
+ *
+ * Do initial bus gluing
+ */
+int udc_init (void)
+{
+ /* Init various pointers */
+ immr = (immap_t *) CONFIG_SYS_IMMR;
+ cp = (cpm8xx_t *) & (immr->im_cpm);
+ usb_paramp = (usb_pram_t *) & (cp->cp_dparam[PROFF_USB]);
+ usbp = (usb_t *) & (cp->cp_scc[0]);
+
+ memset (ep_ref, 0x00, (sizeof (struct mpc8xx_ep) * MAX_ENDPOINTS));
+
+ udc_device = 0;
+ udc_state = STATE_NOT_READY;
+
+ usbp->usmod = 0x00;
+ usbp->uscom = 0;
+
+ /* Set USB Frame #0, Respond at Address & Get a clock source */
+ usbp->usaddr = 0x00;
+ mpc8xx_udc_clock_init (immr, cp);
+
+ /* PA15, PA14 as perhiperal USBRXD and USBOE */
+ immr->im_ioport.iop_padir &= ~0x0003;
+ immr->im_ioport.iop_papar |= 0x0003;
+
+ /* PC11/PC10 as peripheral USBRXP USBRXN */
+ immr->im_ioport.iop_pcso |= 0x0030;
+
+ /* PC7/PC6 as perhiperal USBTXP and USBTXN */
+ immr->im_ioport.iop_pcdir |= 0x0300;
+ immr->im_ioport.iop_pcpar |= 0x0300;
+
+ /* Set the base address */
+ address_base = (u32) (cp->cp_dpmem + CPM_USB_BASE);
+
+ /* Initialise endpoints and circular buffers */
+ mpc8xx_udc_endpoint_init ();
+ mpc8xx_udc_cbd_init ();
+
+ /* Assign allocated Dual Port Endpoint descriptors */
+ usb_paramp->ep0ptr = (u32) endpoints[0];
+ usb_paramp->ep1ptr = (u32) endpoints[1];
+ usb_paramp->ep2ptr = (u32) endpoints[2];
+ usb_paramp->ep3ptr = (u32) endpoints[3];
+ usb_paramp->frame_n = 0;
+
+ DBG ("ep0ptr=0x%08x ep1ptr=0x%08x ep2ptr=0x%08x ep3ptr=0x%08x\n",
+ usb_paramp->ep0ptr, usb_paramp->ep1ptr, usb_paramp->ep2ptr,
+ usb_paramp->ep3ptr);
+
+ return 0;
+}
+
+/* udc_irq
+ *
+ * Poll for whatever events may have occured
+ */
+void udc_irq (void)
+{
+ int epid = 0;
+ volatile cbd_t *rx_cbdp = 0;
+ volatile cbd_t *rx_cbdp_base = 0;
+
+ if (udc_state != STATE_READY) {
+ return;
+ }
+
+ if (usbp->usber & USB_E_BSY) {
+ /* This shouldn't happen. If it does then it's a bug ! */
+ usbp->usber |= USB_E_BSY;
+ mpc8xx_udc_flush_rx_fifo ();
+ }
+
+ /* Scan all RX/Bidirectional Endpoints for RX data. */
+ for (epid = 0; epid < MAX_ENDPOINTS; epid++) {
+ if (!ep_ref[epid].prx) {
+ continue;
+ }
+ rx_cbdp = rx_cbdp_base = ep_ref[epid].prx;
+
+ do {
+ if (!(rx_cbdp->cbd_sc & RX_BD_E)) {
+
+ if (rx_cbdp->cbd_sc & 0x1F) {
+ /* Corrupt data discard it.
+ * Controller has NAK'd this packet.
+ */
+ mpc8xx_udc_clear_rxbd (rx_cbdp);
+
+ } else {
+ if (!epid) {
+ mpc8xx_udc_ep0_rx (rx_cbdp);
+
+ } else {
+ /* Process data */
+ mpc8xx_udc_set_nak (epid);
+ mpc8xx_udc_epn_rx (epid, rx_cbdp);
+ mpc8xx_udc_clear_rxbd (rx_cbdp);
+ }
+ }
+
+ /* Advance RX CBD pointer */
+ mpc8xx_udc_advance_rx (&rx_cbdp, epid);
+ ep_ref[epid].prx = rx_cbdp;
+ } else {
+ /* Advance RX CBD pointer */
+ mpc8xx_udc_advance_rx (&rx_cbdp, epid);
+ }
+
+ } while (rx_cbdp != rx_cbdp_base);
+ }
+
+ /* Handle TX events as appropiate, the correct place to do this is
+ * in a tx routine. Perhaps TX on epn was pre-empted by ep0
+ */
+
+ if (usbp->usber & USB_E_TXB) {
+ usbp->usber |= USB_E_TXB;
+ }
+
+ if (usbp->usber & (USB_TX_ERRMASK)) {
+ mpc8xx_udc_handle_txerr ();
+ }
+
+ /* Switch to the default state, respond at the default address */
+ if (usbp->usber & USB_E_RESET) {
+ usbp->usber |= USB_E_RESET;
+ usbp->usaddr = 0x00;
+ udc_device->device_state = STATE_DEFAULT;
+ }
+
+ /* if(usbp->usber&USB_E_IDLE){
+ We could suspend here !
+ usbp->usber|=USB_E_IDLE;
+ DBG("idle state change\n");
+ }
+ if(usbp->usbs){
+ We could resume here when IDLE is deasserted !
+ Not worth doing, so long as we are self powered though.
+ }
+ */
+
+ return;
+}
+
+/* udc_endpoint_write
+ *
+ * Write some data to an endpoint
+ */
+int udc_endpoint_write (struct usb_endpoint_instance *epi)
+{
+ int ep = 0;
+ short epid = 1, unnak = 0, ret = 0;
+
+ if (udc_state != STATE_READY) {
+ ERR ("invalid udc_state != STATE_READY!\n");
+ return -1;
+ }
+
+ if (!udc_device || !epi) {
+ return -1;
+ }
+
+ if (udc_device->device_state != STATE_CONFIGURED) {
+ return -1;
+ }
+
+ ep = epi->endpoint_address & 0x03;
+ if (ep >= MAX_ENDPOINTS) {
+ return -1;
+ }
+
+ /* Set NAK for all RX endpoints during TX */
+ for (epid = 1; epid < MAX_ENDPOINTS; epid++) {
+
+ /* Don't set NAK on DATA IN/CONTROL endpoints */
+ if (ep_ref[epid].sc & USB_DIR_IN) {
+ continue;
+ }
+
+ if (!(usbp->usep[epid] & (USEP_THS_NAK | USEP_RHS_NAK))) {
+ unnak |= 1 << epid;
+ }
+
+ mpc8xx_udc_set_nak (epid);
+ }
+
+ mpc8xx_udc_init_tx (&udc_device->bus->endpoint_array[ep],
+ epi->tx_urb);
+ ret = mpc8xx_udc_ep_tx (&udc_device->bus->endpoint_array[ep]);
+
+ /* Remove temporary NAK */
+ for (epid = 1; epid < MAX_ENDPOINTS; epid++) {
+ if (unnak & (1 << epid)) {
+ udc_unset_nak (epid);
+ }
+ }
+
+ return ret;
+}
+
+/* mpc8xx_udc_assign_urb
+ *
+ * Associate a given urb to an endpoint TX or RX transmit/receive buffers
+ */
+static int mpc8xx_udc_assign_urb (int ep, char direction)
+{
+ struct usb_endpoint_instance *epi = 0;
+
+ if (ep >= MAX_ENDPOINTS) {
+ goto err;
+ }
+ epi = &udc_device->bus->endpoint_array[ep];
+ if (!epi) {
+ goto err;
+ }
+
+ if (!ep_ref[ep].urb) {
+ ep_ref[ep].urb = usbd_alloc_urb (udc_device, udc_device->bus->endpoint_array);
+ if (!ep_ref[ep].urb) {
+ goto err;
+ }
+ } else {
+ ep_ref[ep].urb->actual_length = 0;
+ }
+
+ switch (direction) {
+ case USB_DIR_IN:
+ epi->tx_urb = ep_ref[ep].urb;
+ break;
+ case USB_DIR_OUT:
+ epi->rcv_urb = ep_ref[ep].urb;
+ break;
+ default:
+ goto err;
+ }
+ return 0;
+
+ err:
+ udc_state = STATE_ERROR;
+ return -1;
+}
+
+/* udc_setup_ep
+ *
+ * Associate U-Boot software endpoints to mpc8xx endpoint parameter ram
+ * Isochronous endpoints aren't yet supported!
+ */
+void udc_setup_ep (struct usb_device_instance *device, unsigned int ep,
+ struct usb_endpoint_instance *epi)
+{
+ uchar direction = 0;
+ int ep_attrib = 0;
+
+ if (epi && (ep < MAX_ENDPOINTS)) {
+
+ if (ep == 0) {
+ if (epi->rcv_attributes != USB_ENDPOINT_XFER_CONTROL
+ || epi->tx_attributes !=
+ USB_ENDPOINT_XFER_CONTROL) {
+
+ /* ep0 must be a control endpoint */
+ udc_state = STATE_ERROR;
+ return;
+
+ }
+ if (!(ep_ref[ep].sc & EP_ATTACHED)) {
+ mpc8xx_udc_cbd_attach (ep, epi->tx_packetSize,
+ epi->rcv_packetSize);
+ }
+ usbp->usep[ep] = 0x0000;
+ return;
+ }
+
+ if ((epi->endpoint_address & USB_ENDPOINT_DIR_MASK)
+ == USB_DIR_IN) {
+
+ direction = 1;
+ ep_attrib = epi->tx_attributes;
+ epi->rcv_packetSize = 0;
+ ep_ref[ep].sc |= USB_DIR_IN;
+ } else {
+
+ direction = 0;
+ ep_attrib = epi->rcv_attributes;
+ epi->tx_packetSize = 0;
+ ep_ref[ep].sc &= ~USB_DIR_IN;
+ }
+
+ if (mpc8xx_udc_assign_urb (ep, epi->endpoint_address
+ & USB_ENDPOINT_DIR_MASK)) {
+ return;
+ }
+
+ switch (ep_attrib) {
+ case USB_ENDPOINT_XFER_CONTROL:
+ if (!(ep_ref[ep].sc & EP_ATTACHED)) {
+ mpc8xx_udc_cbd_attach (ep,
+ epi->tx_packetSize,
+ epi->rcv_packetSize);
+ }
+ usbp->usep[ep] = ep << 12;
+ epi->rcv_urb = epi->tx_urb = ep_ref[ep].urb;
+
+ break;
+ case USB_ENDPOINT_XFER_BULK:
+ case USB_ENDPOINT_XFER_INT:
+ if (!(ep_ref[ep].sc & EP_ATTACHED)) {
+ if (direction) {
+ mpc8xx_udc_cbd_attach (ep,
+ epi->tx_packetSize,
+ 0);
+ } else {
+ mpc8xx_udc_cbd_attach (ep,
+ 0,
+ epi->rcv_packetSize);
+ }
+ }
+ usbp->usep[ep] = (ep << 12) | ((ep_attrib) << 8);
+
+ break;
+ case USB_ENDPOINT_XFER_ISOC:
+ default:
+ serial_printf ("Error endpoint attrib %d>3\n", ep_attrib);
+ udc_state = STATE_ERROR;
+ break;
+ }
+ }
+
+}
+
+/* udc_connect
+ *
+ * Move state, switch on the USB
+ */
+void udc_connect (void)
+{
+ /* Enable pull-up resistor on D+
+ * TODO: fit a pull-up resistor to drive SE0 for > 2.5us
+ */
+
+ if (udc_state != STATE_ERROR) {
+ udc_state = STATE_READY;
+ usbp->usmod |= USMOD_EN;
+ }
+}
+
+/* udc_disconnect
+ *
+ * Disconnect is not used but, is included for completeness
+ */
+void udc_disconnect (void)
+{
+ /* Disable pull-up resistor on D-
+ * TODO: fix a pullup resistor to control this
+ */
+
+ if (udc_state != STATE_ERROR) {
+ udc_state = STATE_NOT_READY;
+ }
+ usbp->usmod &= ~USMOD_EN;
+}
+
+/* udc_enable
+ *
+ * Grab an EP0 URB, register interest in a subset of USB events
+ */
+void udc_enable (struct usb_device_instance *device)
+{
+ if (udc_state == STATE_ERROR) {
+ return;
+ }
+
+ udc_device = device;
+
+ if (!ep_ref[0].urb) {
+ ep_ref[0].urb = usbd_alloc_urb (device, device->bus->endpoint_array);
+ }
+
+ /* Register interest in all events except SOF, enable transceiver */
+ usbp->usber = 0x03FF;
+ usbp->usbmr = 0x02F7;
+
+ return;
+}
+
+/* udc_disable
+ *
+ * disable the currently hooked device
+ */
+void udc_disable (void)
+{
+ int i = 0;
+
+ if (udc_state == STATE_ERROR) {
+ DBG ("Won't disable UDC. udc_state==STATE_ERROR !\n");
+ return;
+ }
+
+ udc_device = 0;
+
+ for (; i < MAX_ENDPOINTS; i++) {
+ if (ep_ref[i].urb) {
+ usbd_dealloc_urb (ep_ref[i].urb);
+ ep_ref[i].urb = 0;
+ }
+ }
+
+ usbp->usbmr = 0x00;
+ usbp->usmod = ~USMOD_EN;
+ udc_state = STATE_NOT_READY;
+}
+
+/* udc_startup_events
+ *
+ * Enable the specified device
+ */
+void udc_startup_events (struct usb_device_instance *device)
+{
+ udc_enable (device);
+ if (udc_state == STATE_READY) {
+ usbd_device_event_irq (device, DEVICE_CREATE, 0);
+ }
+}
+
+/* udc_set_nak
+ *
+ * Allow upper layers to signal lower layers should not accept more RX data
+ *
+ */
+void udc_set_nak (int epid)
+{
+ if (epid) {
+ mpc8xx_udc_set_nak (epid);
+ }
+}
+
+/* udc_unset_nak
+ *
+ * Suspend sending of NAK tokens for DATA OUT tokens on a given endpoint.
+ * Switch off NAKing on this endpoint to accept more data output from host.
+ *
+ */
+void udc_unset_nak (int epid)
+{
+ if (epid > MAX_ENDPOINTS) {
+ return;
+ }
+
+ if (usbp->usep[epid] & (USEP_THS_NAK | USEP_RHS_NAK)) {
+ usbp->usep[epid] &= ~(USEP_THS_NAK | USEP_RHS_NAK);
+ __asm__ ("eieio");
+ }
+}
+
+/******************************************************************************
+ Static Linkage
+******************************************************************************/
+
+/* udc_state_transition_up
+ * udc_state_transition_down
+ *
+ * Helper functions to implement device state changes. The device states and
+ * the events that transition between them are:
+ *
+ * STATE_ATTACHED
+ * || /\
+ * \/ ||
+ * DEVICE_HUB_CONFIGURED DEVICE_HUB_RESET
+ * || /\
+ * \/ ||
+ * STATE_POWERED
+ * || /\
+ * \/ ||
+ * DEVICE_RESET DEVICE_POWER_INTERRUPTION
+ * || /\
+ * \/ ||
+ * STATE_DEFAULT
+ * || /\
+ * \/ ||
+ * DEVICE_ADDRESS_ASSIGNED DEVICE_RESET
+ * || /\
+ * \/ ||
+ * STATE_ADDRESSED
+ * || /\
+ * \/ ||
+ * DEVICE_CONFIGURED DEVICE_DE_CONFIGURED
+ * || /\
+ * \/ ||
+ * STATE_CONFIGURED
+ *
+ * udc_state_transition_up transitions up (in the direction from STATE_ATTACHED
+ * to STATE_CONFIGURED) from the specified initial state to the specified final
+ * state, passing through each intermediate state on the way. If the initial
+ * state is at or above (i.e. nearer to STATE_CONFIGURED) the final state, then
+ * no state transitions will take place.
+ *
+ * udc_state_transition_down transitions down (in the direction from
+ * STATE_CONFIGURED to STATE_ATTACHED) from the specified initial state to the
+ * specified final state, passing through each intermediate state on the way.
+ * If the initial state is at or below (i.e. nearer to STATE_ATTACHED) the final
+ * state, then no state transitions will take place.
+ *
+ */
+
+static void mpc8xx_udc_state_transition_up (usb_device_state_t initial,
+ usb_device_state_t final)
+{
+ if (initial < final) {
+ switch (initial) {
+ case STATE_ATTACHED:
+ usbd_device_event_irq (udc_device,
+ DEVICE_HUB_CONFIGURED, 0);
+ if (final == STATE_POWERED)
+ break;
+ case STATE_POWERED:
+ usbd_device_event_irq (udc_device, DEVICE_RESET, 0);
+ if (final == STATE_DEFAULT)
+ break;
+ case STATE_DEFAULT:
+ usbd_device_event_irq (udc_device,
+ DEVICE_ADDRESS_ASSIGNED, 0);
+ if (final == STATE_ADDRESSED)
+ break;
+ case STATE_ADDRESSED:
+ usbd_device_event_irq (udc_device, DEVICE_CONFIGURED,
+ 0);
+ case STATE_CONFIGURED:
+ break;
+ default:
+ break;
+ }
+ }
+}
+
+static void mpc8xx_udc_state_transition_down (usb_device_state_t initial,
+ usb_device_state_t final)
+{
+ if (initial > final) {
+ switch (initial) {
+ case STATE_CONFIGURED:
+ usbd_device_event_irq (udc_device,
+ DEVICE_DE_CONFIGURED, 0);
+ if (final == STATE_ADDRESSED)
+ break;
+ case STATE_ADDRESSED:
+ usbd_device_event_irq (udc_device, DEVICE_RESET, 0);
+ if (final == STATE_DEFAULT)
+ break;
+ case STATE_DEFAULT:
+ usbd_device_event_irq (udc_device,
+ DEVICE_POWER_INTERRUPTION, 0);
+ if (final == STATE_POWERED)
+ break;
+ case STATE_POWERED:
+ usbd_device_event_irq (udc_device, DEVICE_HUB_RESET,
+ 0);
+ case STATE_ATTACHED:
+ break;
+ default:
+ break;
+ }
+ }
+}
+
+/* mpc8xx_udc_stall
+ *
+ * Force returning of STALL tokens on the given endpoint. Protocol or function
+ * STALL conditions are permissable here
+ */
+static void mpc8xx_udc_stall (unsigned int ep)
+{
+ usbp->usep[ep] |= STALL_BITMASK;
+}
+
+/* mpc8xx_udc_set_nak
+ *
+ * Force returning of NAK responses for the given endpoint as a kind of very
+ * simple flow control
+ */
+static void mpc8xx_udc_set_nak (unsigned int ep)
+{
+ usbp->usep[ep] |= NAK_BITMASK;
+ __asm__ ("eieio");
+}
+
+/* mpc8xx_udc_handle_txerr
+ *
+ * Handle errors relevant to TX. Return a status code to allow calling
+ * indicative of what if anything happened
+ */
+static short mpc8xx_udc_handle_txerr ()
+{
+ short ep = 0, ret = 0;
+
+ for (; ep < TX_RING_SIZE; ep++) {
+ if (usbp->usber & (0x10 << ep)) {
+
+ /* Timeout or underrun */
+ if (tx_cbd[ep]->cbd_sc & 0x06) {
+ ret = 1;
+ mpc8xx_udc_flush_tx_fifo (ep);
+
+ } else {
+ if (usbp->usep[ep] & STALL_BITMASK) {
+ if (!ep) {
+ usbp->usep[ep] &= ~STALL_BITMASK;
+ }
+ } /* else NAK */
+ }
+ usbp->usber |= (0x10 << ep);
+ }
+ }
+ return ret;
+}
+
+/* mpc8xx_udc_advance_rx
+ *
+ * Advance cbd rx
+ */
+static void mpc8xx_udc_advance_rx (volatile cbd_t ** rx_cbdp, int epid)
+{
+ if ((*rx_cbdp)->cbd_sc & RX_BD_W) {
+ *rx_cbdp = (volatile cbd_t *) (endpoints[epid]->rbase + CONFIG_SYS_IMMR);
+
+ } else {
+ (*rx_cbdp)++;
+ }
+}
+
+
+/* mpc8xx_udc_flush_tx_fifo
+ *
+ * Flush a given TX fifo. Assumes one tx cbd per endpoint
+ */
+static void mpc8xx_udc_flush_tx_fifo (int epid)
+{
+ volatile cbd_t *tx_cbdp = 0;
+
+ if (epid > MAX_ENDPOINTS) {
+ return;
+ }
+
+ /* TX stop */
+ immr->im_cpm.cp_cpcr = ((epid << 2) | 0x1D01);
+ __asm__ ("eieio");
+ while (immr->im_cpm.cp_cpcr & 0x01);
+
+ usbp->uscom = 0x40 | 0;
+
+ /* reset ring */
+ tx_cbdp = (cbd_t *) (endpoints[epid]->tbptr + CONFIG_SYS_IMMR);
+ tx_cbdp->cbd_sc = (TX_BD_I | TX_BD_W);
+
+
+ endpoints[epid]->tptr = endpoints[epid]->tbase;
+ endpoints[epid]->tstate = 0x00;
+ endpoints[epid]->tbcnt = 0x00;
+
+ /* TX start */
+ immr->im_cpm.cp_cpcr = ((epid << 2) | 0x2D01);
+ __asm__ ("eieio");
+ while (immr->im_cpm.cp_cpcr & 0x01);
+
+ return;
+}
+
+/* mpc8xx_udc_flush_rx_fifo
+ *
+ * For the sake of completeness of the namespace, it seems like
+ * a good-design-decision (tm) to include mpc8xx_udc_flush_rx_fifo();
+ * If RX_BD_E is true => a driver bug either here or in an upper layer
+ * not polling frequently enough. If RX_BD_E is true we have told the host
+ * we have accepted data but, the CPM found it had no-where to put that data
+ * which needless to say would be a bad thing.
+ */
+static void mpc8xx_udc_flush_rx_fifo ()
+{
+ int i = 0;
+
+ for (i = 0; i < RX_RING_SIZE; i++) {
+ if (!(rx_cbd[i]->cbd_sc & RX_BD_E)) {
+ ERR ("buf %p used rx data len = 0x%x sc=0x%x!\n",
+ rx_cbd[i], rx_cbd[i]->cbd_datlen,
+ rx_cbd[i]->cbd_sc);
+
+ }
+ }
+ ERR ("BUG : Input over-run\n");
+}
+
+/* mpc8xx_udc_clear_rxbd
+ *
+ * Release control of RX CBD to CP.
+ */
+static void mpc8xx_udc_clear_rxbd (volatile cbd_t * rx_cbdp)
+{
+ rx_cbdp->cbd_datlen = 0x0000;
+ rx_cbdp->cbd_sc = ((rx_cbdp->cbd_sc & RX_BD_W) | (RX_BD_E | RX_BD_I));
+ __asm__ ("eieio");
+}
+
+/* mpc8xx_udc_tx_irq
+ *
+ * Parse for tx timeout, control RX or USB reset/busy conditions
+ * Return -1 on timeout, -2 on fatal error, else return zero
+ */
+static int mpc8xx_udc_tx_irq (int ep)
+{
+ int i = 0;
+
+ if (usbp->usber & (USB_TX_ERRMASK)) {
+ if (mpc8xx_udc_handle_txerr ()) {
+ /* Timeout, controlling function must retry send */
+ return -1;
+ }
+ }
+
+ if (usbp->usber & (USB_E_RESET | USB_E_BSY)) {
+ /* Fatal, abandon TX transaction */
+ return -2;
+ }
+
+ if (usbp->usber & USB_E_RXB) {
+ for (i = 0; i < RX_RING_SIZE; i++) {
+ if (!(rx_cbd[i]->cbd_sc & RX_BD_E)) {
+ if ((rx_cbd[i] == ep_ref[0].prx) || ep) {
+ return -2;
+ }
+ }
+ }
+ }
+
+ return 0;
+}
+
+/* mpc8xx_udc_ep_tx
+ *
+ * Transmit in a re-entrant fashion outbound USB packets.
+ * Implement retry/timeout mechanism described in USB specification
+ * Toggle DATA0/DATA1 pids as necessary
+ * Introduces non-standard tx_retry. The USB standard has no scope for slave
+ * devices to give up TX, however tx_retry stops us getting stuck in an endless
+ * TX loop.
+ */
+static int mpc8xx_udc_ep_tx (struct usb_endpoint_instance *epi)
+{
+ struct urb *urb = epi->tx_urb;
+ volatile cbd_t *tx_cbdp = 0;
+ unsigned int ep = 0, pkt_len = 0, x = 0, tx_retry = 0;
+ int ret = 0;
+
+ if (!epi || (epi->endpoint_address & 0x03) >= MAX_ENDPOINTS || !urb) {
+ return -1;
+ }
+
+ ep = epi->endpoint_address & 0x03;
+ tx_cbdp = (cbd_t *) (endpoints[ep]->tbptr + CONFIG_SYS_IMMR);
+
+ if (tx_cbdp->cbd_sc & TX_BD_R || usbp->usber & USB_E_TXB) {
+ mpc8xx_udc_flush_tx_fifo (ep);
+ usbp->usber |= USB_E_TXB;
+ };
+
+ while (tx_retry++ < 100) {
+ ret = mpc8xx_udc_tx_irq (ep);
+ if (ret == -1) {
+ /* ignore timeout here */
+ } else if (ret == -2) {
+ /* Abandon TX */
+ mpc8xx_udc_flush_tx_fifo (ep);
+ return -1;
+ }
+
+ tx_cbdp = (cbd_t *) (endpoints[ep]->tbptr + CONFIG_SYS_IMMR);
+ while (tx_cbdp->cbd_sc & TX_BD_R) {
+ };
+ tx_cbdp->cbd_sc = (tx_cbdp->cbd_sc & TX_BD_W);
+
+ pkt_len = urb->actual_length - epi->sent;
+
+ if (pkt_len > epi->tx_packetSize || pkt_len > EP_MAX_PKT) {
+ pkt_len = MIN (epi->tx_packetSize, EP_MAX_PKT);
+ }
+
+ for (x = 0; x < pkt_len; x++) {
+ *((unsigned char *) (tx_cbdp->cbd_bufaddr + x)) =
+ urb->buffer[epi->sent + x];
+ }
+ tx_cbdp->cbd_datlen = pkt_len;
+ tx_cbdp->cbd_sc |= (CBD_TX_BITMASK | ep_ref[ep].pid);
+ __asm__ ("eieio");
+
+#ifdef __SIMULATE_ERROR__
+ if (++err_poison_test == 2) {
+ err_poison_test = 0;
+ tx_cbdp->cbd_sc &= ~TX_BD_TC;
+ }
+#endif
+
+ usbp->uscom = (USCOM_STR | ep);
+
+ while (!(usbp->usber & USB_E_TXB)) {
+ ret = mpc8xx_udc_tx_irq (ep);
+ if (ret == -1) {
+ /* TX timeout */
+ break;
+ } else if (ret == -2) {
+ if (usbp->usber & USB_E_TXB) {
+ usbp->usber |= USB_E_TXB;
+ }
+ mpc8xx_udc_flush_tx_fifo (ep);
+ return -1;
+ }
+ };
+
+ if (usbp->usber & USB_E_TXB) {
+ usbp->usber |= USB_E_TXB;
+ }
+
+ /* ACK must be present <= 18bit times from TX */
+ if (ret == -1) {
+ continue;
+ }
+
+ /* TX ACK : USB 2.0 8.7.2, Toggle PID, Advance TX */
+ epi->sent += pkt_len;
+ epi->last = MIN (urb->actual_length - epi->sent, epi->tx_packetSize);
+ TOGGLE_TX_PID (ep_ref[ep].pid);
+
+ if (epi->sent >= epi->tx_urb->actual_length) {
+
+ epi->tx_urb->actual_length = 0;
+ epi->sent = 0;
+
+ if (ep_ref[ep].sc & EP_SEND_ZLP) {
+ ep_ref[ep].sc &= ~EP_SEND_ZLP;
+ } else {
+ return 0;
+ }
+ }
+ }
+
+ ERR ("TX fail, endpoint 0x%x tx bytes 0x%x/0x%x\n", ep, epi->sent,
+ epi->tx_urb->actual_length);
+
+ return -1;
+}
+
+/* mpc8xx_udc_dump_request
+ *
+ * Dump a control request to console
+ */
+static void mpc8xx_udc_dump_request (struct usb_device_request *request)
+{
+ DBG ("bmRequestType:%02x bRequest:%02x wValue:%04x "
+ "wIndex:%04x wLength:%04x ?\n",
+ request->bmRequestType,
+ request->bRequest,
+ request->wValue, request->wIndex, request->wLength);
+
+ return;
+}
+
+/* mpc8xx_udc_ep0_rx_setup
+ *
+ * Decode received ep0 SETUP packet. return non-zero on error
+ */
+static int mpc8xx_udc_ep0_rx_setup (volatile cbd_t * rx_cbdp)
+{
+ unsigned int x = 0;
+ struct urb *purb = ep_ref[0].urb;
+ struct usb_endpoint_instance *epi =
+ &udc_device->bus->endpoint_array[0];
+
+ for (; x < rx_cbdp->cbd_datlen; x++) {
+ *(((unsigned char *) &ep_ref[0].urb->device_request) + x) =
+ *((unsigned char *) (rx_cbdp->cbd_bufaddr + x));
+ }
+
+ mpc8xx_udc_clear_rxbd (rx_cbdp);
+
+ if (ep0_recv_setup (purb)) {
+ mpc8xx_udc_dump_request (&purb->device_request);
+ return -1;
+ }
+
+ if ((purb->device_request.bmRequestType & USB_REQ_DIRECTION_MASK)
+ == USB_REQ_HOST2DEVICE) {
+
+ switch (purb->device_request.bRequest) {
+ case USB_REQ_SET_ADDRESS:
+ /* Send the Status OUT ZLP */
+ ep_ref[0].pid = TX_BD_PID_DATA1;
+ purb->actual_length = 0;
+ mpc8xx_udc_init_tx (epi, purb);
+ mpc8xx_udc_ep_tx (epi);
+
+ /* Move to the addressed state */
+ usbp->usaddr = udc_device->address;
+ mpc8xx_udc_state_transition_up (udc_device->device_state,
+ STATE_ADDRESSED);
+ return 0;
+
+ case USB_REQ_SET_CONFIGURATION:
+ if (!purb->device_request.wValue) {
+ /* Respond at default address */
+ usbp->usaddr = 0x00;
+ mpc8xx_udc_state_transition_down (udc_device->device_state,
+ STATE_ADDRESSED);
+ } else {
+ /* TODO: Support multiple configurations */
+ mpc8xx_udc_state_transition_up (udc_device->device_state,
+ STATE_CONFIGURED);
+ for (x = 1; x < MAX_ENDPOINTS; x++) {
+ if ((udc_device->bus->endpoint_array[x].endpoint_address & USB_ENDPOINT_DIR_MASK)
+ == USB_DIR_IN) {
+ ep_ref[x].pid = TX_BD_PID_DATA0;
+ } else {
+ ep_ref[x].pid = RX_BD_PID_DATA0;
+ }
+ /* Set configuration must unstall endpoints */
+ usbp->usep[x] &= ~STALL_BITMASK;
+ }
+ }
+ break;
+ default:
+ /* CDC/Vendor specific */
+ break;
+ }
+
+ /* Send ZLP as ACK in Status OUT phase */
+ ep_ref[0].pid = TX_BD_PID_DATA1;
+ purb->actual_length = 0;
+ mpc8xx_udc_init_tx (epi, purb);
+ mpc8xx_udc_ep_tx (epi);
+
+ } else {
+
+ if (purb->actual_length) {
+ ep_ref[0].pid = TX_BD_PID_DATA1;
+ mpc8xx_udc_init_tx (epi, purb);
+
+ if (!(purb->actual_length % EP0_MAX_PACKET_SIZE)) {
+ ep_ref[0].sc |= EP_SEND_ZLP;
+ }
+
+ if (purb->device_request.wValue ==
+ USB_DESCRIPTOR_TYPE_DEVICE) {
+ if (le16_to_cpu (purb->device_request.wLength)
+ > purb->actual_length) {
+ /* Send EP0_MAX_PACKET_SIZE bytes
+ * unless correct size requested.
+ */
+ if (purb->actual_length > epi->tx_packetSize) {
+ purb->actual_length = epi->tx_packetSize;
+ }
+ }
+ }
+ mpc8xx_udc_ep_tx (epi);
+
+ } else {
+ /* Corrupt SETUP packet? */
+ ERR ("Zero length data or SETUP with DATA-IN phase ?\n");
+ return 1;
+ }
+ }
+ return 0;
+}
+
+/* mpc8xx_udc_init_tx
+ *
+ * Setup some basic parameters for a TX transaction
+ */
+static void mpc8xx_udc_init_tx (struct usb_endpoint_instance *epi,
+ struct urb *tx_urb)
+{
+ epi->sent = 0;
+ epi->last = 0;
+ epi->tx_urb = tx_urb;
+}
+
+/* mpc8xx_udc_ep0_rx
+ *
+ * Receive ep0/control USB data. Parse and possibly send a response.
+ */
+static void mpc8xx_udc_ep0_rx (volatile cbd_t * rx_cbdp)
+{
+ if (rx_cbdp->cbd_sc & RX_BD_PID_SETUP) {
+
+ /* Unconditionally accept SETUP packets */
+ if (mpc8xx_udc_ep0_rx_setup (rx_cbdp)) {
+ mpc8xx_udc_stall (0);
+ }
+
+ } else {
+
+ mpc8xx_udc_clear_rxbd (rx_cbdp);
+
+ if ((rx_cbdp->cbd_datlen - 2)) {
+ /* SETUP with a DATA phase
+ * outside of SETUP packet.
+ * Reply with STALL.
+ */
+ mpc8xx_udc_stall (0);
+ }
+ }
+}
+
+/* mpc8xx_udc_epn_rx
+ *
+ * Receive some data from cbd into USB system urb data abstraction
+ * Upper layers should NAK if there is insufficient RX data space
+ */
+static int mpc8xx_udc_epn_rx (unsigned int epid, volatile cbd_t * rx_cbdp)
+{
+ struct usb_endpoint_instance *epi = 0;
+ struct urb *urb = 0;
+ unsigned int x = 0;
+
+ if (epid >= MAX_ENDPOINTS || !rx_cbdp->cbd_datlen) {
+ return 0;
+ }
+
+ /* USB 2.0 PDF section 8.6.4
+ * Discard data with invalid PID it is a resend.
+ */
+ if (ep_ref[epid].pid != (rx_cbdp->cbd_sc & 0xC0)) {
+ return 1;
+ }
+ TOGGLE_RX_PID (ep_ref[epid].pid);
+
+ epi = &udc_device->bus->endpoint_array[epid];
+ urb = epi->rcv_urb;
+
+ for (; x < (rx_cbdp->cbd_datlen - 2); x++) {
+ *((unsigned char *) (urb->buffer + urb->actual_length + x)) =
+ *((unsigned char *) (rx_cbdp->cbd_bufaddr + x));
+ }
+
+ if (x) {
+ usbd_rcv_complete (epi, x, 0);
+ if (ep_ref[epid].urb->status == RECV_ERROR) {
+ DBG ("RX error unset NAK\n");
+ udc_unset_nak (epid);
+ }
+ }
+ return x;
+}
+
+/* mpc8xx_udc_clock_init
+ *
+ * Obtain a clock reference for Full Speed Signaling
+ */
+static void mpc8xx_udc_clock_init (volatile immap_t * immr,
+ volatile cpm8xx_t * cp)
+{
+
+#if defined(CONFIG_SYS_USB_EXTC_CLK)
+
+ /* This has been tested with a 48MHz crystal on CLK6 */
+ switch (CONFIG_SYS_USB_EXTC_CLK) {
+ case 1:
+ immr->im_ioport.iop_papar |= 0x0100;
+ immr->im_ioport.iop_padir &= ~0x0100;
+ cp->cp_sicr |= 0x24;
+ break;
+ case 2:
+ immr->im_ioport.iop_papar |= 0x0200;
+ immr->im_ioport.iop_padir &= ~0x0200;
+ cp->cp_sicr |= 0x2D;
+ break;
+ case 3:
+ immr->im_ioport.iop_papar |= 0x0400;
+ immr->im_ioport.iop_padir &= ~0x0400;
+ cp->cp_sicr |= 0x36;
+ break;
+ case 4:
+ immr->im_ioport.iop_papar |= 0x0800;
+ immr->im_ioport.iop_padir &= ~0x0800;
+ cp->cp_sicr |= 0x3F;
+ break;
+ default:
+ udc_state = STATE_ERROR;
+ break;
+ }
+
+#elif defined(CONFIG_SYS_USB_BRGCLK)
+
+ /* This has been tested with brgclk == 50MHz */
+ int divisor = 0;
+
+ if (gd->cpu_clk < 48000000L) {
+ ERR ("brgclk is too slow for full-speed USB!\n");
+ udc_state = STATE_ERROR;
+ return;
+ }
+
+ /* Assume the brgclk is 'good enough', we want !(gd->cpu_clk%48MHz)
+ * but, can /probably/ live with close-ish alternative rates.
+ */
+ divisor = (gd->cpu_clk / 48000000L) - 1;
+ cp->cp_sicr &= ~0x0000003F;
+
+ switch (CONFIG_SYS_USB_BRGCLK) {
+ case 1:
+ cp->cp_brgc1 |= (divisor | CPM_BRG_EN);
+ cp->cp_sicr &= ~0x2F;
+ break;
+ case 2:
+ cp->cp_brgc2 |= (divisor | CPM_BRG_EN);
+ cp->cp_sicr |= 0x00000009;
+ break;
+ case 3:
+ cp->cp_brgc3 |= (divisor | CPM_BRG_EN);
+ cp->cp_sicr |= 0x00000012;
+ break;
+ case 4:
+ cp->cp_brgc4 = (divisor | CPM_BRG_EN);
+ cp->cp_sicr |= 0x0000001B;
+ break;
+ default:
+ udc_state = STATE_ERROR;
+ break;
+ }
+
+#else
+#error "CONFIG_SYS_USB_EXTC_CLK or CONFIG_SYS_USB_BRGCLK must be defined"
+#endif
+
+}
+
+/* mpc8xx_udc_cbd_attach
+ *
+ * attach a cbd to and endpoint
+ */
+static void mpc8xx_udc_cbd_attach (int ep, uchar tx_size, uchar rx_size)
+{
+
+ if (!tx_cbd[ep] || !rx_cbd[ep] || ep >= MAX_ENDPOINTS) {
+ udc_state = STATE_ERROR;
+ return;
+ }
+
+ if (tx_size > USB_MAX_PKT || rx_size > USB_MAX_PKT ||
+ (!tx_size && !rx_size)) {
+ udc_state = STATE_ERROR;
+ return;
+ }
+
+ /* Attach CBD to appropiate Parameter RAM Endpoint data structure */
+ if (rx_size) {
+ endpoints[ep]->rbase = (u32) rx_cbd[rx_ct];
+ endpoints[ep]->rbptr = (u32) rx_cbd[rx_ct];
+ rx_ct++;
+
+ if (!ep) {
+
+ endpoints[ep]->rbptr = (u32) rx_cbd[rx_ct];
+ rx_cbd[rx_ct]->cbd_sc |= RX_BD_W;
+ rx_ct++;
+
+ } else {
+ rx_ct += 2;
+ endpoints[ep]->rbptr = (u32) rx_cbd[rx_ct];
+ rx_cbd[rx_ct]->cbd_sc |= RX_BD_W;
+ rx_ct++;
+ }
+
+ /* Where we expect to RX data on this endpoint */
+ ep_ref[ep].prx = rx_cbd[rx_ct - 1];
+ } else {
+
+ ep_ref[ep].prx = 0;
+ endpoints[ep]->rbase = 0;
+ endpoints[ep]->rbptr = 0;
+ }
+
+ if (tx_size) {
+ endpoints[ep]->tbase = (u32) tx_cbd[tx_ct];
+ endpoints[ep]->tbptr = (u32) tx_cbd[tx_ct];
+ tx_ct++;
+ } else {
+ endpoints[ep]->tbase = 0;
+ endpoints[ep]->tbptr = 0;
+ }
+
+ endpoints[ep]->tstate = 0;
+ endpoints[ep]->tbcnt = 0;
+ endpoints[ep]->mrblr = EP_MAX_PKT;
+ endpoints[ep]->rfcr = 0x18;
+ endpoints[ep]->tfcr = 0x18;
+ ep_ref[ep].sc |= EP_ATTACHED;
+
+ DBG ("ep %d rbase 0x%08x rbptr 0x%08x tbase 0x%08x tbptr 0x%08x prx = %p\n",
+ ep, endpoints[ep]->rbase, endpoints[ep]->rbptr,
+ endpoints[ep]->tbase, endpoints[ep]->tbptr,
+ ep_ref[ep].prx);
+
+ return;
+}
+
+/* mpc8xx_udc_cbd_init
+ *
+ * Allocate space for a cbd and allocate TX/RX data space
+ */
+static void mpc8xx_udc_cbd_init (void)
+{
+ int i = 0;
+
+ for (; i < TX_RING_SIZE; i++) {
+ tx_cbd[i] = (cbd_t *)
+ mpc8xx_udc_alloc (sizeof (cbd_t), sizeof (int));
+ }
+
+ for (i = 0; i < RX_RING_SIZE; i++) {
+ rx_cbd[i] = (cbd_t *)
+ mpc8xx_udc_alloc (sizeof (cbd_t), sizeof (int));
+ }
+
+ for (i = 0; i < TX_RING_SIZE; i++) {
+ tx_cbd[i]->cbd_bufaddr =
+ mpc8xx_udc_alloc (EP_MAX_PKT, sizeof (int));
+
+ tx_cbd[i]->cbd_sc = (TX_BD_I | TX_BD_W);
+ tx_cbd[i]->cbd_datlen = 0x0000;
+ }
+
+
+ for (i = 0; i < RX_RING_SIZE; i++) {
+ rx_cbd[i]->cbd_bufaddr =
+ mpc8xx_udc_alloc (EP_MAX_PKT, sizeof (int));
+ rx_cbd[i]->cbd_sc = (RX_BD_I | RX_BD_E);
+ rx_cbd[i]->cbd_datlen = 0x0000;
+
+ }
+
+ return;
+}
+
+/* mpc8xx_udc_endpoint_init
+ *
+ * Attach an endpoint to some dpram
+ */
+static void mpc8xx_udc_endpoint_init (void)
+{
+ int i = 0;
+
+ for (; i < MAX_ENDPOINTS; i++) {
+ endpoints[i] = (usb_epb_t *)
+ mpc8xx_udc_alloc (sizeof (usb_epb_t), 32);
+ }
+}
+
+/* mpc8xx_udc_alloc
+ *
+ * Grab the address of some dpram
+ */
+static u32 mpc8xx_udc_alloc (u32 data_size, u32 alignment)
+{
+ u32 retaddr = address_base;
+
+ while (retaddr % alignment) {
+ retaddr++;
+ }
+ address_base += data_size;
+
+ return retaddr;
+}
diff --git a/drivers/usb/gadget/omap1510_udc.c b/drivers/usb/gadget/omap1510_udc.c
new file mode 100644
index 0000000..90f7907
--- /dev/null
+++ b/drivers/usb/gadget/omap1510_udc.c
@@ -0,0 +1,1567 @@
+/*
+ * (C) Copyright 2003
+ * Gerry Hamel, geh@ti.com, Texas Instruments
+ *
+ * Based on
+ * linux/drivers/usb/device/bi/omap.c
+ * TI OMAP1510 USB bus interface driver
+ *
+ * Author: MontaVista Software, Inc.
+ * source@mvista.com
+ * (C) Copyright 2002
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#ifdef CONFIG_OMAP_SX1
+#include <i2c.h>
+#endif
+#include <usbdevice.h>
+#include <usb/omap1510_udc.h>
+
+#include "ep0.h"
+
+
+#define UDC_INIT_MDELAY 80 /* Device settle delay */
+#define UDC_MAX_ENDPOINTS 31 /* Number of endpoints on this UDC */
+
+/* Some kind of debugging output... */
+#if 1
+#define UDCDBG(str)
+#define UDCDBGA(fmt,args...)
+#else /* The bugs still exists... */
+#define UDCDBG(str) serial_printf("[%s] %s:%d: " str "\n", __FILE__,__FUNCTION__,__LINE__)
+#define UDCDBGA(fmt,args...) serial_printf("[%s] %s:%d: " fmt "\n", __FILE__,__FUNCTION__,__LINE__, ##args)
+#endif
+
+#if 1
+#define UDCREG(name)
+#define UDCREGL(name)
+#else /* The bugs still exists... */
+#define UDCREG(name) serial_printf("%s():%d: %s[%08x]=%.4x\n",__FUNCTION__,__LINE__, (#name), name, inw(name)) /* For 16-bit regs */
+#define UDCREGL(name) serial_printf("%s():%d: %s[%08x]=%.8x\n",__FUNCTION__,__LINE__, (#name), name, inl(name)) /* For 32-bit regs */
+#endif
+
+
+static struct urb *ep0_urb = NULL;
+
+static struct usb_device_instance *udc_device; /* Used in interrupt handler */
+static u16 udc_devstat = 0; /* UDC status (DEVSTAT) */
+static u32 udc_interrupts = 0;
+
+static void udc_stall_ep (unsigned int ep_addr);
+
+
+static struct usb_endpoint_instance *omap1510_find_ep (int ep)
+{
+ int i;
+
+ for (i = 0; i < udc_device->bus->max_endpoints; i++) {
+ if (udc_device->bus->endpoint_array[i].endpoint_address == ep)
+ return &udc_device->bus->endpoint_array[i];
+ }
+ return NULL;
+}
+
+/* ************************************************************************** */
+/* IO
+ */
+
+/*
+ * omap1510_prepare_endpoint_for_rx
+ *
+ * This function implements TRM Figure 14-11.
+ *
+ * The endpoint to prepare for transfer is specified as a physical endpoint
+ * number. For OUT (rx) endpoints 1 through 15, the corresponding endpoint
+ * configuration register is checked to see if the endpoint is ISO or not.
+ * If the OUT endpoint is valid and is non-ISO then its FIFO is enabled.
+ * No action is taken for endpoint 0 or for IN (tx) endpoints 16 through 30.
+ */
+static void omap1510_prepare_endpoint_for_rx (int ep_addr)
+{
+ int ep_num = ep_addr & USB_ENDPOINT_NUMBER_MASK;
+
+ UDCDBGA ("omap1510_prepare_endpoint %x", ep_addr);
+ if (((ep_addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT)) {
+ if ((inw (UDC_EP_RX (ep_num)) &
+ (UDC_EPn_RX_Valid | UDC_EPn_RX_Iso)) ==
+ UDC_EPn_RX_Valid) {
+ /* rx endpoint is valid, non-ISO, so enable its FIFO */
+ outw (UDC_EP_Sel | ep_num, UDC_EP_NUM);
+ outw (UDC_Set_FIFO_En, UDC_CTRL);
+ outw (0, UDC_EP_NUM);
+ }
+ }
+}
+
+/* omap1510_configure_endpoints
+ *
+ * This function implements TRM Figure 14-10.
+ */
+static void omap1510_configure_endpoints (struct usb_device_instance *device)
+{
+ int ep;
+ struct usb_bus_instance *bus;
+ struct usb_endpoint_instance *endpoint;
+ unsigned short ep_ptr;
+ unsigned short ep_size;
+ unsigned short ep_isoc;
+ unsigned short ep_doublebuffer;
+ int ep_addr;
+ int packet_size;
+ int buffer_size;
+ int attributes;
+
+ bus = device->bus;
+
+ /* There is a dedicated 2048 byte buffer for USB packets that may be
+ * arbitrarily partitioned among the endpoints on 8-byte boundaries.
+ * The first 8 bytes are reserved for receiving setup packets on
+ * endpoint 0.
+ */
+ ep_ptr = 8; /* reserve the first 8 bytes for the setup fifo */
+
+ for (ep = 0; ep < bus->max_endpoints; ep++) {
+ endpoint = bus->endpoint_array + ep;
+ ep_addr = endpoint->endpoint_address;
+ if ((ep_addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) {
+ /* IN endpoint */
+ packet_size = endpoint->tx_packetSize;
+ attributes = endpoint->tx_attributes;
+ } else {
+ /* OUT endpoint */
+ packet_size = endpoint->rcv_packetSize;
+ attributes = endpoint->rcv_attributes;
+ }
+
+ switch (packet_size) {
+ case 0:
+ ep_size = 0;
+ break;
+ case 8:
+ ep_size = 0;
+ break;
+ case 16:
+ ep_size = 1;
+ break;
+ case 32:
+ ep_size = 2;
+ break;
+ case 64:
+ ep_size = 3;
+ break;
+ case 128:
+ ep_size = 4;
+ break;
+ case 256:
+ ep_size = 5;
+ break;
+ case 512:
+ ep_size = 6;
+ break;
+ default:
+ UDCDBGA ("ep 0x%02x has bad packet size %d",
+ ep_addr, packet_size);
+ packet_size = 0;
+ ep_size = 0;
+ break;
+ }
+
+ switch (attributes & USB_ENDPOINT_XFERTYPE_MASK) {
+ case USB_ENDPOINT_XFER_CONTROL:
+ case USB_ENDPOINT_XFER_BULK:
+ case USB_ENDPOINT_XFER_INT:
+ default:
+ /* A non-isochronous endpoint may optionally be
+ * double-buffered. For now we disable
+ * double-buffering.
+ */
+ ep_doublebuffer = 0;
+ ep_isoc = 0;
+ if (packet_size > 64)
+ packet_size = 0;
+ if (!ep || !ep_doublebuffer)
+ buffer_size = packet_size;
+ else
+ buffer_size = packet_size * 2;
+ break;
+ case USB_ENDPOINT_XFER_ISOC:
+ /* Isochronous endpoints are always double-
+ * buffered, but the double-buffering bit
+ * in the endpoint configuration register
+ * becomes the msb of the endpoint size so we
+ * set the double-buffering flag to zero.
+ */
+ ep_doublebuffer = 0;
+ ep_isoc = 1;
+ buffer_size = packet_size * 2;
+ break;
+ }
+
+ /* check to see if our packet buffer RAM is exhausted */
+ if ((ep_ptr + buffer_size) > 2048) {
+ UDCDBGA ("out of packet RAM for ep 0x%02x buf size %d", ep_addr, buffer_size);
+ buffer_size = packet_size = 0;
+ }
+
+ /* force a default configuration for endpoint 0 since it is
+ * always enabled
+ */
+ if (!ep && ((packet_size < 8) || (packet_size > 64))) {
+ buffer_size = packet_size = 64;
+ ep_size = 3;
+ }
+
+ if (!ep) {
+ /* configure endpoint 0 */
+ outw ((ep_size << 12) | (ep_ptr >> 3), UDC_EP0);
+ /*UDCDBGA("ep 0 buffer offset 0x%03x packet size 0x%03x", */
+ /* ep_ptr, packet_size); */
+ } else if ((ep_addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) {
+ /* IN endpoint */
+ if (packet_size) {
+ outw ((1 << 15) | (ep_doublebuffer << 14) |
+ (ep_size << 12) | (ep_isoc << 11) |
+ (ep_ptr >> 3),
+ UDC_EP_TX (ep_addr &
+ USB_ENDPOINT_NUMBER_MASK));
+ UDCDBGA ("IN ep %d buffer offset 0x%03x"
+ " packet size 0x%03x",
+ ep_addr & USB_ENDPOINT_NUMBER_MASK,
+ ep_ptr, packet_size);
+ } else {
+ outw (0,
+ UDC_EP_TX (ep_addr &
+ USB_ENDPOINT_NUMBER_MASK));
+ }
+ } else {
+ /* OUT endpoint */
+ if (packet_size) {
+ outw ((1 << 15) | (ep_doublebuffer << 14) |
+ (ep_size << 12) | (ep_isoc << 11) |
+ (ep_ptr >> 3),
+ UDC_EP_RX (ep_addr &
+ USB_ENDPOINT_NUMBER_MASK));
+ UDCDBGA ("OUT ep %d buffer offset 0x%03x"
+ " packet size 0x%03x",
+ ep_addr & USB_ENDPOINT_NUMBER_MASK,
+ ep_ptr, packet_size);
+ } else {
+ outw (0,
+ UDC_EP_RX (ep_addr &
+ USB_ENDPOINT_NUMBER_MASK));
+ }
+ }
+ ep_ptr += buffer_size;
+ }
+}
+
+/* omap1510_deconfigure_device
+ *
+ * This function balances omap1510_configure_device.
+ */
+static void omap1510_deconfigure_device (void)
+{
+ int epnum;
+
+ UDCDBG ("clear Cfg_Lock");
+ outw (inw (UDC_SYSCON1) & ~UDC_Cfg_Lock, UDC_SYSCON1);
+ UDCREG (UDC_SYSCON1);
+
+ /* deconfigure all endpoints */
+ for (epnum = 1; epnum <= 15; epnum++) {
+ outw (0, UDC_EP_RX (epnum));
+ outw (0, UDC_EP_TX (epnum));
+ }
+}
+
+/* omap1510_configure_device
+ *
+ * This function implements TRM Figure 14-9.
+ */
+static void omap1510_configure_device (struct usb_device_instance *device)
+{
+ omap1510_configure_endpoints (device);
+
+
+ /* Figure 14-9 indicates we should enable interrupts here, but we have
+ * other routines (udc_all_interrupts, udc_suspended_interrupts) to
+ * do that.
+ */
+
+ UDCDBG ("set Cfg_Lock");
+ outw (inw (UDC_SYSCON1) | UDC_Cfg_Lock, UDC_SYSCON1);
+ UDCREG (UDC_SYSCON1);
+}
+
+/* omap1510_write_noniso_tx_fifo
+ *
+ * This function implements TRM Figure 14-30.
+ *
+ * If the endpoint has an active tx_urb, then the next packet of data from the
+ * URB is written to the tx FIFO. The total amount of data in the urb is given
+ * by urb->actual_length. The maximum amount of data that can be sent in any
+ * one packet is given by endpoint->tx_packetSize. The number of data bytes
+ * from this URB that have already been transmitted is given by endpoint->sent.
+ * endpoint->last is updated by this routine with the number of data bytes
+ * transmitted in this packet.
+ *
+ * In accordance with Figure 14-30, the EP_NUM register must already have been
+ * written with the value to select the appropriate tx FIFO before this routine
+ * is called.
+ */
+static void omap1510_write_noniso_tx_fifo (struct usb_endpoint_instance
+ *endpoint)
+{
+ struct urb *urb = endpoint->tx_urb;
+
+ if (urb) {
+ unsigned int last, i;
+
+ UDCDBGA ("urb->buffer %p, buffer_length %d, actual_length %d",
+ urb->buffer, urb->buffer_length, urb->actual_length);
+ if ((last =
+ MIN (urb->actual_length - endpoint->sent,
+ endpoint->tx_packetSize))) {
+ u8 *cp = urb->buffer + endpoint->sent;
+
+ UDCDBGA ("endpoint->sent %d, tx_packetSize %d, last %d", endpoint->sent, endpoint->tx_packetSize, last);
+
+ if (((u32) cp & 1) == 0) { /* word aligned? */
+ outsw (UDC_DATA, cp, last >> 1);
+ } else { /* byte aligned. */
+ for (i = 0; i < (last >> 1); i++) {
+ u16 w = ((u16) cp[2 * i + 1] << 8) |
+ (u16) cp[2 * i];
+ outw (w, UDC_DATA);
+ }
+ }
+ if (last & 1) {
+ outb (*(cp + last - 1), UDC_DATA);
+ }
+ }
+ endpoint->last = last;
+ }
+}
+
+/* omap1510_read_noniso_rx_fifo
+ *
+ * This function implements TRM Figure 14-28.
+ *
+ * If the endpoint has an active rcv_urb, then the next packet of data is read
+ * from the rcv FIFO and written to rcv_urb->buffer at offset
+ * rcv_urb->actual_length to append the packet data to the data from any
+ * previous packets for this transfer. We assume that there is sufficient room
+ * left in the buffer to hold an entire packet of data.
+ *
+ * The return value is the number of bytes read from the FIFO for this packet.
+ *
+ * In accordance with Figure 14-28, the EP_NUM register must already have been
+ * written with the value to select the appropriate rcv FIFO before this routine
+ * is called.
+ */
+static int omap1510_read_noniso_rx_fifo (struct usb_endpoint_instance
+ *endpoint)
+{
+ struct urb *urb = endpoint->rcv_urb;
+ int len = 0;
+
+ if (urb) {
+ len = inw (UDC_RXFSTAT);
+
+ if (len) {
+ unsigned char *cp = urb->buffer + urb->actual_length;
+
+ insw (UDC_DATA, cp, len >> 1);
+ if (len & 1)
+ *(cp + len - 1) = inb (UDC_DATA);
+ }
+ }
+ return len;
+}
+
+/* omap1510_prepare_for_control_write_status
+ *
+ * This function implements TRM Figure 14-17.
+ *
+ * We have to deal here with non-autodecoded control writes that haven't already
+ * been dealt with by ep0_recv_setup. The non-autodecoded standard control
+ * write requests are: set/clear endpoint feature, set configuration, set
+ * interface, and set descriptor. ep0_recv_setup handles set/clear requests for
+ * ENDPOINT_HALT by halting the endpoint for a set request and resetting the
+ * endpoint for a clear request. ep0_recv_setup returns an error for
+ * SET_DESCRIPTOR requests which causes them to be terminated with a stall by
+ * the setup handler. A SET_INTERFACE request is handled by ep0_recv_setup by
+ * generating a DEVICE_SET_INTERFACE event. This leaves only the
+ * SET_CONFIGURATION event for us to deal with here.
+ *
+ */
+static void omap1510_prepare_for_control_write_status (struct urb *urb)
+{
+ struct usb_device_request *request = &urb->device_request;;
+
+ /* check for a SET_CONFIGURATION request */
+ if (request->bRequest == USB_REQ_SET_CONFIGURATION) {
+ int configuration = le16_to_cpu (request->wValue) & 0xff;
+ unsigned short devstat = inw (UDC_DEVSTAT);
+
+ if ((devstat & (UDC_ADD | UDC_CFG)) == UDC_ADD) {
+ /* device is currently in ADDRESSED state */
+ if (configuration) {
+ /* Assume the specified non-zero configuration
+ * value is valid and switch to the CONFIGURED
+ * state.
+ */
+ outw (UDC_Dev_Cfg, UDC_SYSCON2);
+ }
+ } else if ((devstat & UDC_CFG) == UDC_CFG) {
+ /* device is currently in CONFIGURED state */
+ if (!configuration) {
+ /* Switch to ADDRESSED state. */
+ outw (UDC_Clr_Cfg, UDC_SYSCON2);
+ }
+ }
+ }
+
+ /* select EP0 tx FIFO */
+ outw (UDC_EP_Dir | UDC_EP_Sel, UDC_EP_NUM);
+ /* clear endpoint (no data bytes in status stage) */
+ outw (UDC_Clr_EP, UDC_CTRL);
+ /* enable the EP0 tx FIFO */
+ outw (UDC_Set_FIFO_En, UDC_CTRL);
+ /* deselect the endpoint */
+ outw (UDC_EP_Dir, UDC_EP_NUM);
+}
+
+/* udc_state_transition_up
+ * udc_state_transition_down
+ *
+ * Helper functions to implement device state changes. The device states and
+ * the events that transition between them are:
+ *
+ * STATE_ATTACHED
+ * || /\
+ * \/ ||
+ * DEVICE_HUB_CONFIGURED DEVICE_HUB_RESET
+ * || /\
+ * \/ ||
+ * STATE_POWERED
+ * || /\
+ * \/ ||
+ * DEVICE_RESET DEVICE_POWER_INTERRUPTION
+ * || /\
+ * \/ ||
+ * STATE_DEFAULT
+ * || /\
+ * \/ ||
+ * DEVICE_ADDRESS_ASSIGNED DEVICE_RESET
+ * || /\
+ * \/ ||
+ * STATE_ADDRESSED
+ * || /\
+ * \/ ||
+ * DEVICE_CONFIGURED DEVICE_DE_CONFIGURED
+ * || /\
+ * \/ ||
+ * STATE_CONFIGURED
+ *
+ * udc_state_transition_up transitions up (in the direction from STATE_ATTACHED
+ * to STATE_CONFIGURED) from the specified initial state to the specified final
+ * state, passing through each intermediate state on the way. If the initial
+ * state is at or above (i.e. nearer to STATE_CONFIGURED) the final state, then
+ * no state transitions will take place.
+ *
+ * udc_state_transition_down transitions down (in the direction from
+ * STATE_CONFIGURED to STATE_ATTACHED) from the specified initial state to the
+ * specified final state, passing through each intermediate state on the way.
+ * If the initial state is at or below (i.e. nearer to STATE_ATTACHED) the final
+ * state, then no state transitions will take place.
+ *
+ * These functions must only be called with interrupts disabled.
+ */
+static void udc_state_transition_up (usb_device_state_t initial,
+ usb_device_state_t final)
+{
+ if (initial < final) {
+ switch (initial) {
+ case STATE_ATTACHED:
+ usbd_device_event_irq (udc_device,
+ DEVICE_HUB_CONFIGURED, 0);
+ if (final == STATE_POWERED)
+ break;
+ case STATE_POWERED:
+ usbd_device_event_irq (udc_device, DEVICE_RESET, 0);
+ if (final == STATE_DEFAULT)
+ break;
+ case STATE_DEFAULT:
+ usbd_device_event_irq (udc_device,
+ DEVICE_ADDRESS_ASSIGNED, 0);
+ if (final == STATE_ADDRESSED)
+ break;
+ case STATE_ADDRESSED:
+ usbd_device_event_irq (udc_device, DEVICE_CONFIGURED,
+ 0);
+ case STATE_CONFIGURED:
+ break;
+ default:
+ break;
+ }
+ }
+}
+
+static void udc_state_transition_down (usb_device_state_t initial,
+ usb_device_state_t final)
+{
+ if (initial > final) {
+ switch (initial) {
+ case STATE_CONFIGURED:
+ usbd_device_event_irq (udc_device, DEVICE_DE_CONFIGURED, 0);
+ if (final == STATE_ADDRESSED)
+ break;
+ case STATE_ADDRESSED:
+ usbd_device_event_irq (udc_device, DEVICE_RESET, 0);
+ if (final == STATE_DEFAULT)
+ break;
+ case STATE_DEFAULT:
+ usbd_device_event_irq (udc_device, DEVICE_POWER_INTERRUPTION, 0);
+ if (final == STATE_POWERED)
+ break;
+ case STATE_POWERED:
+ usbd_device_event_irq (udc_device, DEVICE_HUB_RESET, 0);
+ case STATE_ATTACHED:
+ break;
+ default:
+ break;
+ }
+ }
+}
+
+/* Handle all device state changes.
+ * This function implements TRM Figure 14-21.
+ */
+static void omap1510_udc_state_changed (void)
+{
+ u16 bits;
+ u16 devstat = inw (UDC_DEVSTAT);
+
+ UDCDBGA ("state changed, devstat %x, old %x", devstat, udc_devstat);
+
+ bits = devstat ^ udc_devstat;
+ if (bits) {
+ if (bits & UDC_ATT) {
+ if (devstat & UDC_ATT) {
+ UDCDBG ("device attached and powered");
+ udc_state_transition_up (udc_device->device_state, STATE_POWERED);
+ } else {
+ UDCDBG ("device detached or unpowered");
+ udc_state_transition_down (udc_device->device_state, STATE_ATTACHED);
+ }
+ }
+ if (bits & UDC_USB_Reset) {
+ if (devstat & UDC_USB_Reset) {
+ UDCDBG ("device reset in progess");
+ udc_state_transition_down (udc_device->device_state, STATE_POWERED);
+ } else {
+ UDCDBG ("device reset completed");
+ }
+ }
+ if (bits & UDC_DEF) {
+ if (devstat & UDC_DEF) {
+ UDCDBG ("device entering default state");
+ udc_state_transition_up (udc_device->device_state, STATE_DEFAULT);
+ } else {
+ UDCDBG ("device leaving default state");
+ udc_state_transition_down (udc_device->device_state, STATE_POWERED);
+ }
+ }
+ if (bits & UDC_SUS) {
+ if (devstat & UDC_SUS) {
+ UDCDBG ("entering suspended state");
+ usbd_device_event_irq (udc_device, DEVICE_BUS_INACTIVE, 0);
+ } else {
+ UDCDBG ("leaving suspended state");
+ usbd_device_event_irq (udc_device, DEVICE_BUS_ACTIVITY, 0);
+ }
+ }
+ if (bits & UDC_R_WK_OK) {
+ UDCDBGA ("remote wakeup %s", (devstat & UDC_R_WK_OK)
+ ? "enabled" : "disabled");
+ }
+ if (bits & UDC_ADD) {
+ if (devstat & UDC_ADD) {
+ UDCDBG ("default -> addressed");
+ udc_state_transition_up (udc_device->device_state, STATE_ADDRESSED);
+ } else {
+ UDCDBG ("addressed -> default");
+ udc_state_transition_down (udc_device->device_state, STATE_DEFAULT);
+ }
+ }
+ if (bits & UDC_CFG) {
+ if (devstat & UDC_CFG) {
+ UDCDBG ("device configured");
+ /* The ep0_recv_setup function generates the
+ * DEVICE_CONFIGURED event when a
+ * USB_REQ_SET_CONFIGURATION setup packet is
+ * received, so we should already be in the
+ * state STATE_CONFIGURED.
+ */
+ udc_state_transition_up (udc_device->device_state, STATE_CONFIGURED);
+ } else {
+ UDCDBG ("device deconfigured");
+ udc_state_transition_down (udc_device->device_state, STATE_ADDRESSED);
+ }
+ }
+ }
+
+ /* Clear interrupt source */
+ outw (UDC_DS_Chg, UDC_IRQ_SRC);
+
+ /* Save current DEVSTAT */
+ udc_devstat = devstat;
+}
+
+/* Handle SETUP USB interrupt.
+ * This function implements TRM Figure 14-14.
+ */
+static void omap1510_udc_setup (struct usb_endpoint_instance *endpoint)
+{
+ UDCDBG ("-> Entering device setup");
+
+ do {
+ const int setup_pktsize = 8;
+ unsigned char *datap =
+ (unsigned char *) &ep0_urb->device_request;
+
+ /* Gain access to EP 0 setup FIFO */
+ outw (UDC_Setup_Sel, UDC_EP_NUM);
+
+ /* Read control request data */
+ insb (UDC_DATA, datap, setup_pktsize);
+
+ UDCDBGA ("EP0 setup read [%x %x %x %x %x %x %x %x]",
+ *(datap + 0), *(datap + 1), *(datap + 2),
+ *(datap + 3), *(datap + 4), *(datap + 5),
+ *(datap + 6), *(datap + 7));
+
+ /* Reset EP0 setup FIFO */
+ outw (0, UDC_EP_NUM);
+ } while (inw (UDC_IRQ_SRC) & UDC_Setup);
+
+ /* Try to process setup packet */
+ if (ep0_recv_setup (ep0_urb)) {
+ /* Not a setup packet, stall next EP0 transaction */
+ udc_stall_ep (0);
+ UDCDBG ("can't parse setup packet, still waiting for setup");
+ return;
+ }
+
+ /* Check direction */
+ if ((ep0_urb->device_request.bmRequestType & USB_REQ_DIRECTION_MASK)
+ == USB_REQ_HOST2DEVICE) {
+ UDCDBG ("control write on EP0");
+ if (le16_to_cpu (ep0_urb->device_request.wLength)) {
+ /* We don't support control write data stages.
+ * The only standard control write request with a data
+ * stage is SET_DESCRIPTOR, and ep0_recv_setup doesn't
+ * support that so we just stall those requests. A
+ * function driver might support a non-standard
+ * write request with a data stage, but it isn't
+ * obvious what we would do with the data if we read it
+ * so we'll just stall it. It seems like the API isn't
+ * quite right here.
+ */
+#if 0
+ /* Here is what we would do if we did support control
+ * write data stages.
+ */
+ ep0_urb->actual_length = 0;
+ outw (0, UDC_EP_NUM);
+ /* enable the EP0 rx FIFO */
+ outw (UDC_Set_FIFO_En, UDC_CTRL);
+#else
+ /* Stall this request */
+ UDCDBG ("Stalling unsupported EP0 control write data "
+ "stage.");
+ udc_stall_ep (0);
+#endif
+ } else {
+ omap1510_prepare_for_control_write_status (ep0_urb);
+ }
+ } else {
+ UDCDBG ("control read on EP0");
+ /* The ep0_recv_setup function has already placed our response
+ * packet data in ep0_urb->buffer and the packet length in
+ * ep0_urb->actual_length.
+ */
+ endpoint->tx_urb = ep0_urb;
+ endpoint->sent = 0;
+ /* select the EP0 tx FIFO */
+ outw (UDC_EP_Dir | UDC_EP_Sel, UDC_EP_NUM);
+ /* Write packet data to the FIFO. omap1510_write_noniso_tx_fifo
+ * will update endpoint->last with the number of bytes written
+ * to the FIFO.
+ */
+ omap1510_write_noniso_tx_fifo (endpoint);
+ /* enable the FIFO to start the packet transmission */
+ outw (UDC_Set_FIFO_En, UDC_CTRL);
+ /* deselect the EP0 tx FIFO */
+ outw (UDC_EP_Dir, UDC_EP_NUM);
+ }
+
+ UDCDBG ("<- Leaving device setup");
+}
+
+/* Handle endpoint 0 RX interrupt
+ * This routine implements TRM Figure 14-16.
+ */
+static void omap1510_udc_ep0_rx (struct usb_endpoint_instance *endpoint)
+{
+ unsigned short status;
+
+ UDCDBG ("RX on EP0");
+ /* select EP0 rx FIFO */
+ outw (UDC_EP_Sel, UDC_EP_NUM);
+
+ status = inw (UDC_STAT_FLG);
+
+ if (status & UDC_ACK) {
+ /* Check direction */
+ if ((ep0_urb->device_request.bmRequestType
+ & USB_REQ_DIRECTION_MASK) == USB_REQ_HOST2DEVICE) {
+ /* This rx interrupt must be for a control write data
+ * stage packet.
+ *
+ * We don't support control write data stages.
+ * We should never end up here.
+ */
+
+ /* clear the EP0 rx FIFO */
+ outw (UDC_Clr_EP, UDC_CTRL);
+
+ /* deselect the EP0 rx FIFO */
+ outw (0, UDC_EP_NUM);
+
+ UDCDBG ("Stalling unexpected EP0 control write "
+ "data stage packet");
+ udc_stall_ep (0);
+ } else {
+ /* This rx interrupt must be for a control read status
+ * stage packet.
+ */
+ UDCDBG ("ACK on EP0 control read status stage packet");
+ /* deselect EP0 rx FIFO */
+ outw (0, UDC_EP_NUM);
+ }
+ } else if (status & UDC_STALL) {
+ UDCDBG ("EP0 stall during RX");
+ /* deselect EP0 rx FIFO */
+ outw (0, UDC_EP_NUM);
+ } else {
+ /* deselect EP0 rx FIFO */
+ outw (0, UDC_EP_NUM);
+ }
+}
+
+/* Handle endpoint 0 TX interrupt
+ * This routine implements TRM Figure 14-18.
+ */
+static void omap1510_udc_ep0_tx (struct usb_endpoint_instance *endpoint)
+{
+ unsigned short status;
+ struct usb_device_request *request = &ep0_urb->device_request;
+
+ UDCDBG ("TX on EP0");
+ /* select EP0 TX FIFO */
+ outw (UDC_EP_Dir | UDC_EP_Sel, UDC_EP_NUM);
+
+ status = inw (UDC_STAT_FLG);
+ if (status & UDC_ACK) {
+ /* Check direction */
+ if ((request->bmRequestType & USB_REQ_DIRECTION_MASK) ==
+ USB_REQ_HOST2DEVICE) {
+ /* This tx interrupt must be for a control write status
+ * stage packet.
+ */
+ UDCDBG ("ACK on EP0 control write status stage packet");
+ /* deselect EP0 TX FIFO */
+ outw (UDC_EP_Dir, UDC_EP_NUM);
+ } else {
+ /* This tx interrupt must be for a control read data
+ * stage packet.
+ */
+ int wLength = le16_to_cpu (request->wLength);
+
+ /* Update our count of bytes sent so far in this
+ * transfer.
+ */
+ endpoint->sent += endpoint->last;
+
+ /* We are finished with this transfer if we have sent
+ * all of the bytes in our tx urb (urb->actual_length)
+ * unless we need a zero-length terminating packet. We
+ * need a zero-length terminating packet if we returned
+ * fewer bytes than were requested (wLength) by the host,
+ * and the number of bytes we returned is an exact
+ * multiple of the packet size endpoint->tx_packetSize.
+ */
+ if ((endpoint->sent == ep0_urb->actual_length)
+ && ((ep0_urb->actual_length == wLength)
+ || (endpoint->last !=
+ endpoint->tx_packetSize))) {
+ /* Done with control read data stage. */
+ UDCDBG ("control read data stage complete");
+ /* deselect EP0 TX FIFO */
+ outw (UDC_EP_Dir, UDC_EP_NUM);
+ /* select EP0 RX FIFO to prepare for control
+ * read status stage.
+ */
+ outw (UDC_EP_Sel, UDC_EP_NUM);
+ /* clear the EP0 RX FIFO */
+ outw (UDC_Clr_EP, UDC_CTRL);
+ /* enable the EP0 RX FIFO */
+ outw (UDC_Set_FIFO_En, UDC_CTRL);
+ /* deselect the EP0 RX FIFO */
+ outw (0, UDC_EP_NUM);
+ } else {
+ /* We still have another packet of data to send
+ * in this control read data stage or else we
+ * need a zero-length terminating packet.
+ */
+ UDCDBG ("ACK control read data stage packet");
+ omap1510_write_noniso_tx_fifo (endpoint);
+ /* enable the EP0 tx FIFO to start transmission */
+ outw (UDC_Set_FIFO_En, UDC_CTRL);
+ /* deselect EP0 TX FIFO */
+ outw (UDC_EP_Dir, UDC_EP_NUM);
+ }
+ }
+ } else if (status & UDC_STALL) {
+ UDCDBG ("EP0 stall during TX");
+ /* deselect EP0 TX FIFO */
+ outw (UDC_EP_Dir, UDC_EP_NUM);
+ } else {
+ /* deselect EP0 TX FIFO */
+ outw (UDC_EP_Dir, UDC_EP_NUM);
+ }
+}
+
+/* Handle RX transaction on non-ISO endpoint.
+ * This function implements TRM Figure 14-27.
+ * The ep argument is a physical endpoint number for a non-ISO OUT endpoint
+ * in the range 1 to 15.
+ */
+static void omap1510_udc_epn_rx (int ep)
+{
+ unsigned short status;
+
+ /* Check endpoint status */
+ status = inw (UDC_STAT_FLG);
+
+ if (status & UDC_ACK) {
+ int nbytes;
+ struct usb_endpoint_instance *endpoint =
+ omap1510_find_ep (ep);
+
+ nbytes = omap1510_read_noniso_rx_fifo (endpoint);
+ usbd_rcv_complete (endpoint, nbytes, 0);
+
+ /* enable rx FIFO to prepare for next packet */
+ outw (UDC_Set_FIFO_En, UDC_CTRL);
+ } else if (status & UDC_STALL) {
+ UDCDBGA ("STALL on RX endpoint %d", ep);
+ } else if (status & UDC_NAK) {
+ UDCDBGA ("NAK on RX ep %d", ep);
+ } else {
+ serial_printf ("omap-bi: RX on ep %d with status %x", ep,
+ status);
+ }
+}
+
+/* Handle TX transaction on non-ISO endpoint.
+ * This function implements TRM Figure 14-29.
+ * The ep argument is a physical endpoint number for a non-ISO IN endpoint
+ * in the range 16 to 30.
+ */
+static void omap1510_udc_epn_tx (int ep)
+{
+ unsigned short status;
+
+ /*serial_printf("omap1510_udc_epn_tx( %x )\n",ep); */
+
+ /* Check endpoint status */
+ status = inw (UDC_STAT_FLG);
+
+ if (status & UDC_ACK) {
+ struct usb_endpoint_instance *endpoint =
+ omap1510_find_ep (ep);
+
+ /* We need to transmit a terminating zero-length packet now if
+ * we have sent all of the data in this URB and the transfer
+ * size was an exact multiple of the packet size.
+ */
+ if (endpoint->tx_urb
+ && (endpoint->last == endpoint->tx_packetSize)
+ && (endpoint->tx_urb->actual_length - endpoint->sent -
+ endpoint->last == 0)) {
+ /* Prepare to transmit a zero-length packet. */
+ endpoint->sent += endpoint->last;
+ /* write 0 bytes of data to FIFO */
+ omap1510_write_noniso_tx_fifo (endpoint);
+ /* enable tx FIFO to start transmission */
+ outw (UDC_Set_FIFO_En, UDC_CTRL);
+ } else if (endpoint->tx_urb
+ && endpoint->tx_urb->actual_length) {
+ /* retire the data that was just sent */
+ usbd_tx_complete (endpoint);
+ /* Check to see if we have more data ready to transmit
+ * now.
+ */
+ if (endpoint->tx_urb
+ && endpoint->tx_urb->actual_length) {
+ /* write data to FIFO */
+ omap1510_write_noniso_tx_fifo (endpoint);
+ /* enable tx FIFO to start transmission */
+ outw (UDC_Set_FIFO_En, UDC_CTRL);
+ }
+ }
+ } else if (status & UDC_STALL) {
+ UDCDBGA ("STALL on TX endpoint %d", ep);
+ } else if (status & UDC_NAK) {
+ UDCDBGA ("NAK on TX endpoint %d", ep);
+ } else {
+ /*serial_printf("omap-bi: TX on ep %d with status %x\n", ep, status); */
+ }
+}
+
+
+/*
+-------------------------------------------------------------------------------
+*/
+
+/* Handle general USB interrupts and dispatch according to type.
+ * This function implements TRM Figure 14-13.
+ */
+void omap1510_udc_irq (void)
+{
+ u16 irq_src = inw (UDC_IRQ_SRC);
+ int valid_irq = 0;
+
+ if (!(irq_src & ~UDC_SOF_Flg)) /* ignore SOF interrupts ) */
+ return;
+
+ UDCDBGA ("< IRQ #%d start >- %x", udc_interrupts, irq_src);
+ /*serial_printf("< IRQ #%d start >- %x\n", udc_interrupts, irq_src); */
+
+ if (irq_src & UDC_DS_Chg) {
+ /* Device status changed */
+ omap1510_udc_state_changed ();
+ valid_irq++;
+ }
+ if (irq_src & UDC_EP0_RX) {
+ /* Endpoint 0 receive */
+ outw (UDC_EP0_RX, UDC_IRQ_SRC); /* ack interrupt */
+ omap1510_udc_ep0_rx (udc_device->bus->endpoint_array + 0);
+ valid_irq++;
+ }
+ if (irq_src & UDC_EP0_TX) {
+ /* Endpoint 0 transmit */
+ outw (UDC_EP0_TX, UDC_IRQ_SRC); /* ack interrupt */
+ omap1510_udc_ep0_tx (udc_device->bus->endpoint_array + 0);
+ valid_irq++;
+ }
+ if (irq_src & UDC_Setup) {
+ /* Device setup */
+ omap1510_udc_setup (udc_device->bus->endpoint_array + 0);
+ valid_irq++;
+ }
+ /*if (!valid_irq) */
+ /* serial_printf("unknown interrupt, IRQ_SRC %.4x\n", irq_src); */
+ UDCDBGA ("< IRQ #%d end >", udc_interrupts);
+ udc_interrupts++;
+}
+
+/* This function implements TRM Figure 14-26. */
+void omap1510_udc_noniso_irq (void)
+{
+ unsigned short epnum;
+ unsigned short irq_src = inw (UDC_IRQ_SRC);
+ int valid_irq = 0;
+
+ if (!(irq_src & (UDC_EPn_RX | UDC_EPn_TX)))
+ return;
+
+ UDCDBGA ("non-ISO IRQ, IRQ_SRC %x", inw (UDC_IRQ_SRC));
+
+ if (irq_src & UDC_EPn_RX) { /* Endpoint N OUT transaction */
+ /* Determine the endpoint number for this interrupt */
+ epnum = (inw (UDC_EPN_STAT) & 0x0f00) >> 8;
+ UDCDBGA ("RX on ep %x", epnum);
+
+ /* acknowledge interrupt */
+ outw (UDC_EPn_RX, UDC_IRQ_SRC);
+
+ if (epnum) {
+ /* select the endpoint FIFO */
+ outw (UDC_EP_Sel | epnum, UDC_EP_NUM);
+
+ omap1510_udc_epn_rx (epnum);
+
+ /* deselect the endpoint FIFO */
+ outw (epnum, UDC_EP_NUM);
+ }
+ valid_irq++;
+ }
+ if (irq_src & UDC_EPn_TX) { /* Endpoint N IN transaction */
+ /* Determine the endpoint number for this interrupt */
+ epnum = (inw (UDC_EPN_STAT) & 0x000f) | USB_DIR_IN;
+ UDCDBGA ("TX on ep %x", epnum);
+
+ /* acknowledge interrupt */
+ outw (UDC_EPn_TX, UDC_IRQ_SRC);
+
+ if (epnum) {
+ /* select the endpoint FIFO */
+ outw (UDC_EP_Sel | UDC_EP_Dir | epnum, UDC_EP_NUM);
+
+ omap1510_udc_epn_tx (epnum);
+
+ /* deselect the endpoint FIFO */
+ outw (UDC_EP_Dir | epnum, UDC_EP_NUM);
+ }
+ valid_irq++;
+ }
+ if (!valid_irq)
+ serial_printf (": unknown non-ISO interrupt, IRQ_SRC %.4x\n",
+ irq_src);
+}
+
+/*
+-------------------------------------------------------------------------------
+*/
+
+
+/*
+ * Start of public functions.
+ */
+
+/* Called to start packet transmission. */
+int udc_endpoint_write (struct usb_endpoint_instance *endpoint)
+{
+ unsigned short epnum =
+ endpoint->endpoint_address & USB_ENDPOINT_NUMBER_MASK;
+
+ UDCDBGA ("Starting transmit on ep %x", epnum);
+
+ if (endpoint->tx_urb) {
+ /* select the endpoint FIFO */
+ outw (UDC_EP_Sel | UDC_EP_Dir | epnum, UDC_EP_NUM);
+ /* write data to FIFO */
+ omap1510_write_noniso_tx_fifo (endpoint);
+ /* enable tx FIFO to start transmission */
+ outw (UDC_Set_FIFO_En, UDC_CTRL);
+ /* deselect the endpoint FIFO */
+ outw (UDC_EP_Dir | epnum, UDC_EP_NUM);
+ }
+
+ return 0;
+}
+
+/* Start to initialize h/w stuff */
+int udc_init (void)
+{
+ u16 udc_rev;
+ uchar value;
+ ulong gpio;
+ int i;
+
+ /* Let the device settle down before we start */
+ for (i = 0; i < UDC_INIT_MDELAY; i++) udelay(1000);
+
+ udc_device = NULL;
+
+ UDCDBG ("starting");
+
+ /* Check peripheral reset. Must be 1 to make sure
+ MPU TIPB peripheral reset is inactive */
+ UDCREG (ARM_RSTCT2);
+
+ /* 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.
+ */
+ outw ((1 << 4) | (1 << 5), CLOCK_CTRL);
+ UDCREG (CLOCK_CTRL);
+
+#ifdef CONFIG_OMAP1510
+ /* This code was originally implemented for OMAP1510 and
+ * therefore is only applicable for OMAP1510 boards. For
+ * OMAP5912 or OMAP16xx the register APLL_CTRL does not
+ * exist and DPLL_CTRL is already configured.
+ */
+
+ /* Set and check APLL */
+ outw (0x0008, APLL_CTRL);
+ UDCREG (APLL_CTRL);
+ /* Set and check DPLL */
+ outw (0x2210, DPLL_CTRL);
+ UDCREG (DPLL_CTRL);
+#endif
+ /* Set and check SOFT
+ * The below line of code has been changed to perform a
+ * read-modify-write instead of a simple write for
+ * configuring the SOFT_REQ register. This allows the code
+ * to be compatible with OMAP5912 and OMAP16xx devices
+ */
+ outw ((1 << 4) | (1 << 3) | 1 | (inw(SOFT_REQ)), SOFT_REQ);
+
+ /* Short delay to wait for DPLL */
+ udelay (1000);
+
+ /* Print banner with device revision */
+ udc_rev = inw (UDC_REV) & 0xff;
+#ifdef CONFIG_OMAP1510
+ printf ("USB: TI OMAP1510 USB function module rev %d.%d\n",
+ udc_rev >> 4, udc_rev & 0xf);
+#endif
+
+#ifdef CONFIG_OMAP1610
+ printf ("USB: TI OMAP5912 USB function module rev %d.%d\n",
+ udc_rev >> 4, udc_rev & 0xf);
+#endif
+
+#ifdef CONFIG_OMAP_SX1
+ i2c_read (0x32, 0x04, 1, &value, 1);
+ value |= 0x04;
+ i2c_write (0x32, 0x04, 1, &value, 1);
+
+ i2c_read (0x32, 0x03, 1, &value, 1);
+ value |= 0x01;
+ i2c_write (0x32, 0x03, 1, &value, 1);
+
+ gpio = inl(GPIO_PIN_CONTROL_REG);
+ gpio |= 0x0002; /* A_IRDA_OFF */
+ gpio |= 0x0800; /* A_SWITCH */
+ gpio |= 0x8000; /* A_USB_ON */
+ outl (gpio, GPIO_PIN_CONTROL_REG);
+
+ gpio = inl(GPIO_DIR_CONTROL_REG);
+ gpio &= ~0x0002; /* A_IRDA_OFF */
+ gpio &= ~0x0800; /* A_SWITCH */
+ gpio &= ~0x8000; /* A_USB_ON */
+ outl (gpio, GPIO_DIR_CONTROL_REG);
+
+ gpio = inl(GPIO_DATA_OUTPUT_REG);
+ gpio |= 0x0002; /* A_IRDA_OFF */
+ gpio &= ~0x0800; /* A_SWITCH */
+ gpio &= ~0x8000; /* A_USB_ON */
+ outl (gpio, GPIO_DATA_OUTPUT_REG);
+#endif
+
+ /* The VBUS_MODE bit selects whether VBUS detection is done via
+ * software (1) or hardware (0). When software detection is
+ * selected, VBUS_CTRL selects whether USB is not connected (0)
+ * or connected (1).
+ */
+ outl (inl (FUNC_MUX_CTRL_0) | UDC_VBUS_MODE, FUNC_MUX_CTRL_0);
+ outl (inl (FUNC_MUX_CTRL_0) & ~UDC_VBUS_CTRL, FUNC_MUX_CTRL_0);
+ UDCREGL (FUNC_MUX_CTRL_0);
+
+ /*
+ * At this point, device is ready for configuration...
+ */
+
+ UDCDBG ("disable USB interrupts");
+ outw (0, UDC_IRQ_EN);
+ UDCREG (UDC_IRQ_EN);
+
+ UDCDBG ("disable USB DMA");
+ outw (0, UDC_DMA_IRQ_EN);
+ UDCREG (UDC_DMA_IRQ_EN);
+
+ UDCDBG ("initialize SYSCON1");
+ outw (UDC_Self_Pwr | UDC_Pullup_En, UDC_SYSCON1);
+ UDCREG (UDC_SYSCON1);
+
+ return 0;
+}
+
+/* Stall endpoint */
+static void udc_stall_ep (unsigned int ep_addr)
+{
+ /*int ep_addr = PHYS_EP_TO_EP_ADDR(ep); */
+ int ep_num = ep_addr & USB_ENDPOINT_NUMBER_MASK;
+
+ UDCDBGA ("stall ep_addr %d", ep_addr);
+
+ /* REVISIT?
+ * The OMAP TRM section 14.2.4.2 says we must check that the FIFO
+ * is empty before halting the endpoint. The current implementation
+ * doesn't check that the FIFO is empty.
+ */
+
+ if (!ep_num) {
+ outw (UDC_Stall_Cmd, UDC_SYSCON2);
+ } else if ((ep_addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) {
+ if (inw (UDC_EP_RX (ep_num)) & UDC_EPn_RX_Valid) {
+ /* we have a valid rx endpoint, so halt it */
+ outw (UDC_EP_Sel | ep_num, UDC_EP_NUM);
+ outw (UDC_Set_Halt, UDC_CTRL);
+ outw (ep_num, UDC_EP_NUM);
+ }
+ } else {
+ if (inw (UDC_EP_TX (ep_num)) & UDC_EPn_TX_Valid) {
+ /* we have a valid tx endpoint, so halt it */
+ outw (UDC_EP_Sel | UDC_EP_Dir | ep_num, UDC_EP_NUM);
+ outw (UDC_Set_Halt, UDC_CTRL);
+ outw (ep_num, UDC_EP_NUM);
+ }
+ }
+}
+
+/* Reset endpoint */
+#if 0
+static void udc_reset_ep (unsigned int ep_addr)
+{
+ /*int ep_addr = PHYS_EP_TO_EP_ADDR(ep); */
+ int ep_num = ep_addr & USB_ENDPOINT_NUMBER_MASK;
+
+ UDCDBGA ("reset ep_addr %d", ep_addr);
+
+ if (!ep_num) {
+ /* control endpoint 0 can't be reset */
+ } else if ((ep_addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) {
+ UDCDBGA ("UDC_EP_RX(%d) = 0x%04x", ep_num,
+ inw (UDC_EP_RX (ep_num)));
+ if (inw (UDC_EP_RX (ep_num)) & UDC_EPn_RX_Valid) {
+ /* we have a valid rx endpoint, so reset it */
+ outw (ep_num | UDC_EP_Sel, UDC_EP_NUM);
+ outw (UDC_Reset_EP, UDC_CTRL);
+ outw (ep_num, UDC_EP_NUM);
+ UDCDBGA ("OUT endpoint %d reset", ep_num);
+ }
+ } else {
+ UDCDBGA ("UDC_EP_TX(%d) = 0x%04x", ep_num,
+ inw (UDC_EP_TX (ep_num)));
+ /* Resetting of tx endpoints seems to be causing the USB function
+ * module to fail, which causes problems when the driver is
+ * uninstalled. We'll skip resetting tx endpoints for now until
+ * we figure out what the problem is.
+ */
+#if 0
+ if (inw (UDC_EP_TX (ep_num)) & UDC_EPn_TX_Valid) {
+ /* we have a valid tx endpoint, so reset it */
+ outw (ep_num | UDC_EP_Dir | UDC_EP_Sel, UDC_EP_NUM);
+ outw (UDC_Reset_EP, UDC_CTRL);
+ outw (ep_num | UDC_EP_Dir, UDC_EP_NUM);
+ UDCDBGA ("IN endpoint %d reset", ep_num);
+ }
+#endif
+ }
+}
+#endif
+
+/* ************************************************************************** */
+
+/**
+ * udc_check_ep - check logical endpoint
+ *
+ * Return physical endpoint number to use for this logical endpoint or zero if not valid.
+ */
+#if 0
+int udc_check_ep (int logical_endpoint, int packetsize)
+{
+ if ((logical_endpoint == 0x80) ||
+ ((logical_endpoint & 0x8f) != logical_endpoint)) {
+ return 0;
+ }
+
+ switch (packetsize) {
+ case 8:
+ case 16:
+ case 32:
+ case 64:
+ case 128:
+ case 256:
+ case 512:
+ break;
+ default:
+ return 0;
+ }
+
+ return EP_ADDR_TO_PHYS_EP (logical_endpoint);
+}
+#endif
+
+/*
+ * udc_setup_ep - setup endpoint
+ *
+ * Associate a physical endpoint with endpoint_instance
+ */
+void udc_setup_ep (struct usb_device_instance *device,
+ unsigned int ep, struct usb_endpoint_instance *endpoint)
+{
+ UDCDBGA ("setting up endpoint addr %x", endpoint->endpoint_address);
+
+ /* This routine gets called by bi_modinit for endpoint 0 and from
+ * bi_config for all of the other endpoints. bi_config gets called
+ * during the DEVICE_CREATE, DEVICE_CONFIGURED, and
+ * DEVICE_SET_INTERFACE events. We need to reconfigure the OMAP packet
+ * RAM after bi_config scans the selected device configuration and
+ * initializes the endpoint structures, but before this routine enables
+ * the OUT endpoint FIFOs. Since bi_config calls this routine in a
+ * loop for endpoints 1 through UDC_MAX_ENDPOINTS, we reconfigure our
+ * packet RAM here when ep==1.
+ * I really hate to do this here, but it seems like the API exported
+ * by the USB bus interface controller driver to the usbd-bi module
+ * isn't quite right so there is no good place to do this.
+ */
+ if (ep == 1) {
+ omap1510_deconfigure_device ();
+ omap1510_configure_device (device);
+ }
+
+ if (endpoint && (ep < UDC_MAX_ENDPOINTS)) {
+ int ep_addr = endpoint->endpoint_address;
+
+ if (!ep_addr) {
+ /* nothing to do for endpoint 0 */
+ } else if ((ep_addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) {
+ /* nothing to do for IN (tx) endpoints */
+ } else { /* OUT (rx) endpoint */
+ if (endpoint->rcv_packetSize) {
+ /*struct urb* urb = &(urb_out_array[ep&0xFF]); */
+ /*urb->endpoint = endpoint; */
+ /*urb->device = device; */
+ /*urb->buffer_length = sizeof(urb->buffer); */
+
+ /*endpoint->rcv_urb = urb; */
+ omap1510_prepare_endpoint_for_rx (ep_addr);
+ }
+ }
+ }
+}
+
+/**
+ * udc_disable_ep - disable endpoint
+ * @ep:
+ *
+ * Disable specified endpoint
+ */
+#if 0
+void udc_disable_ep (unsigned int ep_addr)
+{
+ /*int ep_addr = PHYS_EP_TO_EP_ADDR(ep); */
+ int ep_num = ep_addr & USB_ENDPOINT_NUMBER_MASK;
+ struct usb_endpoint_instance *endpoint = omap1510_find_ep (ep_addr); /*udc_device->bus->endpoint_array + ep; */
+
+ UDCDBGA ("disable ep_addr %d", ep_addr);
+
+ if (!ep_num) {
+ /* nothing to do for endpoint 0 */ ;
+ } else if ((ep_addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) {
+ if (endpoint->tx_packetSize) {
+ /* we have a valid tx endpoint */
+ /*usbd_flush_tx(endpoint); */
+ endpoint->tx_urb = NULL;
+ }
+ } else {
+ if (endpoint->rcv_packetSize) {
+ /* we have a valid rx endpoint */
+ /*usbd_flush_rcv(endpoint); */
+ endpoint->rcv_urb = NULL;
+ }
+ }
+}
+#endif
+
+/* ************************************************************************** */
+
+/**
+ * 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)
+{
+ UDCDBG ("connect, enable Pullup");
+ outl (0x00000018, FUNC_MUX_CTRL_D);
+}
+
+/* Turn off the USB connection by disabling the pullup resistor */
+void udc_disconnect (void)
+{
+ UDCDBG ("disconnect, disable Pullup");
+ outl (0x00000000, FUNC_MUX_CTRL_D);
+}
+
+/* ************************************************************************** */
+
+
+/*
+ * udc_disable_interrupts - disable interrupts
+ * switch off interrupts
+ */
+#if 0
+void udc_disable_interrupts (struct usb_device_instance *device)
+{
+ UDCDBG ("disabling all interrupts");
+ outw (0, UDC_IRQ_EN);
+}
+#endif
+
+/* ************************************************************************** */
+
+/**
+ * udc_ep0_packetsize - return ep0 packetsize
+ */
+#if 0
+int udc_ep0_packetsize (void)
+{
+ return EP0_PACKETSIZE;
+}
+#endif
+
+/* Switch on the UDC */
+void udc_enable (struct usb_device_instance *device)
+{
+ UDCDBGA ("enable device %p, status %d", device, device->status);
+
+ /* initialize driver state variables */
+ udc_devstat = 0;
+
+ /* 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);
+ }
+
+ UDCDBG ("Check clock status");
+ UDCREG (STATUS_REQ);
+
+ /* The VBUS_MODE bit selects whether VBUS detection is done via
+ * software (1) or hardware (0). When software detection is
+ * selected, VBUS_CTRL selects whether USB is not connected (0)
+ * or connected (1).
+ */
+ outl (inl (FUNC_MUX_CTRL_0) | UDC_VBUS_CTRL | UDC_VBUS_MODE,
+ FUNC_MUX_CTRL_0);
+ UDCREGL (FUNC_MUX_CTRL_0);
+
+ omap1510_configure_device (device);
+}
+
+/* Switch off the UDC */
+void udc_disable (void)
+{
+ UDCDBG ("disable UDC");
+
+ omap1510_deconfigure_device ();
+
+ /* The VBUS_MODE bit selects whether VBUS detection is done via
+ * software (1) or hardware (0). When software detection is
+ * selected, VBUS_CTRL selects whether USB is not connected (0)
+ * or connected (1).
+ */
+ outl (inl (FUNC_MUX_CTRL_0) | UDC_VBUS_MODE, FUNC_MUX_CTRL_0);
+ outl (inl (FUNC_MUX_CTRL_0) & ~UDC_VBUS_CTRL, FUNC_MUX_CTRL_0);
+ UDCREGL (FUNC_MUX_CTRL_0);
+
+ /* 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.
+ */
+
+ udc_enable (device);
+}
+
+/**
+ * udc_irq - do pseudo interrupts
+ */
+void udc_irq(void)
+{
+ /* Loop while we have interrupts.
+ * If we don't do this, the input chain
+ * polling delay is likely to miss
+ * host requests.
+ */
+ while (inw (UDC_IRQ_SRC) & ~UDC_SOF_Flg) {
+ /* Handle any new IRQs */
+ omap1510_udc_irq ();
+ omap1510_udc_noniso_irq ();
+ }
+}
+
+/* Flow control */
+void udc_set_nak(int epid)
+{
+ /* TODO: implement this functionality in omap1510 */
+}
+
+void udc_unset_nak (int epid)
+{
+ /* TODO: implement this functionality in omap1510 */
+}