Maxim targets; Add USB stack implementation

Author: Ahmet Alincak

targets/TARGET_Maxim/CMakeLists.txt

@@ -13,3 +13,8 @@ target_include_directories(mbed-core
     INTERFACE
         .
 )
+
+target_sources(mbed-core
+    INTERFACE
+        USBPhy_Maxim.cpp
+)

targets/TARGET_Maxim/USBEndpoints_Maxim.h

@@ -0,0 +1,108 @@
+/*******************************************************************************
+ * Copyright (C) Maxim Integrated Products, Inc., All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
+ * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Except as contained in this notice, the name of Maxim Integrated
+ * Products, Inc. shall not be used except as stated in the Maxim Integrated
+ * Products, Inc. Branding Policy.
+ *
+ * The mere transfer of this software does not imply any licenses
+ * of trade secrets, proprietary technology, copyrights, patents,
+ * trademarks, maskwork rights, or any other form of intellectual
+ * property whatsoever. Maxim Integrated Products, Inc. retains all
+ * ownership rights.
+ *******************************************************************************
+ */
+
+#ifndef USBENDPOINTS_H
+#define USBENDPOINTS_H
+
+/* SETUP packet size */
+#define SETUP_PACKET_SIZE (8)
+
+/* Options flags for configuring endpoints */
+#define DEFAULT_OPTIONS     (0)
+#define SINGLE_BUFFERED     (1U << 0)
+#define ISOCHRONOUS         (1U << 1)
+#define RATE_FEEDBACK_MODE  (1U << 2) /* Interrupt endpoints only */
+
+#define NUMBER_OF_LOGICAL_ENDPOINTS   (8)
+#define NUMBER_OF_PHYSICAL_ENDPOINTS  (NUMBER_OF_LOGICAL_ENDPOINTS * 2)
+
+#define EP_TO_INDEX(endpoint)   (((endpoint & 0xf) << 1) | (endpoint & 0x80 ? 1 : 0))
+
+#define DIR_OUT       0x00
+#define DIR_IN        0x80
+#define EP_NUM(ep)    (ep & 0x0F)
+#define IN_EP(ep)     (ep & DIR_IN)
+#define OUT_EP(ep)    (!(ep & DIR_IN))
+
+/* Define physical endpoint numbers */
+
+/*      Endpoint    No.   */
+/*      ----------------  */
+#define EP0OUT      ((0 << 1) | DIR_OUT)
+#define EP0IN       ((0 << 1) | DIR_IN)
+#define EP1OUT      ((1 << 1) | DIR_OUT)
+#define EP1IN       ((1 << 1) | DIR_IN)
+#define EP2OUT      ((2 << 1) | DIR_OUT)
+#define EP2IN       ((2 << 1) | DIR_IN)
+#define EP3OUT      ((3 << 1) | DIR_OUT)
+#define EP3IN       ((3 << 1) | DIR_IN)
+#define EP4OUT      ((4 << 1) | DIR_OUT)
+#define EP4IN       ((4 << 1) | DIR_IN)
+#define EP5OUT      ((5 << 1) | DIR_OUT)
+#define EP5IN       ((5 << 1) | DIR_IN)
+#define EP6OUT      ((6 << 1) | DIR_OUT)
+#define EP6IN       ((6 << 1) | DIR_IN)
+#define EP7OUT      ((7 << 1) | DIR_OUT)
+#define EP7IN       ((7 << 1) | DIR_IN)
+
+/* Maximum Packet sizes */
+
+#define MAX_PACKET_SIZE_EP0  (64)
+#define MAX_PACKET_SIZE_EP1  (64)
+#define MAX_PACKET_SIZE_EP2  (64)
+#define MAX_PACKET_SIZE_EP3  (64)
+#define MAX_PACKET_SIZE_EP4  (64)
+#define MAX_PACKET_SIZE_EP5  (64)
+#define MAX_PACKET_SIZE_EP6  (64)
+#define MAX_PACKET_SIZE_EP7  (64)
+
+/* Generic endpoints - intended to be portable accross devices */
+/* and be suitable for simple USB devices. */
+
+/* Bulk endpoints */
+#define EPBULK_OUT  (EP1OUT)
+#define EPBULK_IN   (EP2IN)
+
+/* Interrupt endpoints */
+#define EPINT_OUT   (EP3OUT)
+#define EPINT_IN    (EP4IN)
+
+/* Isochronous endpoints */
+/* NOT SUPPORTED - use invalid endpoint number to prevent built errors */
+#define EPISO_OUT   (EP0OUT)
+#define EPISO_IN    (EP0IN)
+
+#define MAX_PACKET_SIZE_EPBULK  (64)
+#define MAX_PACKET_SIZE_EPINT   (64)
+
+#endif

targets/TARGET_Maxim/USBPhyHw.h

@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2018-2019, Arm Limited and affiliates.
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef USBPHYHW_H
+#define USBPHYHW_H
+
+#include "mbed.h"
+#include "USBPhy.h"
+
+
+class USBPhyHw : public USBPhy {
+public:
+    USBPhyHw();
+    virtual ~USBPhyHw();
+    virtual void init(USBPhyEvents *events);
+    virtual void deinit();
+    virtual bool powered();
+    virtual void connect();
+    virtual void disconnect();
+    virtual void configure();
+    virtual void unconfigure();
+    virtual void sof_enable();
+    virtual void sof_disable();
+    virtual void set_address(uint8_t address);
+    virtual void remote_wakeup();
+    virtual const usb_ep_table_t *endpoint_table();
+
+    virtual uint32_t ep0_set_max_packet(uint32_t max_packet);
+    virtual void ep0_setup_read_result(uint8_t *buffer, uint32_t size);
+    virtual void ep0_read(uint8_t *data, uint32_t size);
+    virtual uint32_t ep0_read_result();
+    virtual void ep0_write(uint8_t *buffer, uint32_t size);
+    virtual void ep0_stall();
+
+    virtual bool endpoint_add(usb_ep_t endpoint, uint32_t max_packet, usb_ep_type_t type);
+    virtual void endpoint_remove(usb_ep_t endpoint);
+    virtual void endpoint_stall(usb_ep_t endpoint);
+    virtual void endpoint_unstall(usb_ep_t endpoint);
+
+    virtual bool endpoint_read(usb_ep_t endpoint, uint8_t *data, uint32_t size);
+    virtual uint32_t endpoint_read_result(usb_ep_t endpoint);
+    virtual bool endpoint_write(usb_ep_t endpoint, uint8_t *data, uint32_t size);
+    virtual void endpoint_abort(usb_ep_t endpoint);
+
+    virtual void process();
+
+private:
+    USBPhyEvents *events;
+
+    static void _usbisr(void);
+};
+
+#endif