drivers, wiznet5k: Add W5200 support.

drivers/wiznet5k/ethernet/w5200/w5200.c

+// dpgeorge: this file taken from w5500/w5500.c and adapted to W5200
+
+//*****************************************************************************
+//
+//! \file w5500.c
+//! \brief W5500 HAL Interface.
+//! \version 1.0.1
+//! \date 2013/10/21
+//! \par  Revision history
+//!       <2014/05/01> V1.0.2
+//!         1. Implicit type casting -> Explicit type casting. Refer to M20140501
+//!            Fixed the problem on porting into under 32bit MCU
+//!            Issued by Mathias ClauBen, wizwiki forum ID Think01 and bobh
+//!            Thank for your interesting and serious advices.
+//!       <2013/10/21> 1st Release
+//!       <2013/12/20> V1.0.1
+//!         1. Remove warning
+//!         2. WIZCHIP_READ_BUF WIZCHIP_WRITE_BUF in case _WIZCHIP_IO_MODE_SPI_FDM_
+//!            for loop optimized(removed). refer to M20131220
+//! \author MidnightCow
+//! \copyright
+//!
+//! Copyright (c)  2013, WIZnet Co., LTD.
+//! All rights reserved.
+//! 
+//! Redistribution and use in source and binary forms, with or without 
+//! modification, are permitted provided that the following conditions 
+//! are met: 
+//! 
+//!     * Redistributions of source code must retain the above copyright 
+//! notice, this list of conditions and the following disclaimer. 
+//!     * Redistributions in binary form must reproduce the above copyright
+//! notice, this list of conditions and the following disclaimer in the
+//! documentation and/or other materials provided with the distribution. 
+//!     * Neither the name of the <ORGANIZATION> nor the names of its 
+//! contributors may be used to endorse or promote products derived 
+//! from this software without specific prior written permission. 
+//! 
+//! THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+//! AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
+//! IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+//! ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 
+//! LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
+//! CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
+//! SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+//! INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
+//! CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+//! ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 
+//! THE POSSIBILITY OF SUCH DAMAGE.
+//
+//*****************************************************************************
+
+#include "w5200.h"
+
+#define SMASK (0x7ff) /* tx buffer mask */
+#define RMASK (0x7ff) /* rx buffer mask */
+#define SSIZE (2048) /* max tx buffer size */
+#define RSIZE (2048) /* max rx buffer size */
+
+#define TXBUF_BASE (0x8000)
+#define RXBUF_BASE (0xc000)
+#define SBASE(sn) (TXBUF_BASE + SSIZE * (sn)) /* tx buffer base for socket sn */
+#define RBASE(sn) (RXBUF_BASE + RSIZE * (sn)) /* rx buffer base for socket sn */
+
+uint8_t WIZCHIP_READ(uint32_t AddrSel) {
+    WIZCHIP_CRITICAL_ENTER();
+    WIZCHIP.CS._select();
+
+    uint8_t spi_data[4] = {
+        AddrSel >> 8,
+        AddrSel,
+        0x00,
+        0x01,
+    };
+    WIZCHIP.IF.SPI._write_bytes(spi_data, 4);
+    uint8_t ret;
+    WIZCHIP.IF.SPI._read_bytes(&ret, 1);
+
+    WIZCHIP.CS._deselect();
+    WIZCHIP_CRITICAL_EXIT();
+
+    return ret;
+}
+
+void WIZCHIP_WRITE(uint32_t AddrSel, uint8_t wb) {
+    WIZCHIP_CRITICAL_ENTER();
+    WIZCHIP.CS._select();
+
+    uint8_t spi_data[5] = {
+        AddrSel >> 8,
+        AddrSel,
+        0x80,
+        0x01,
+        wb,
+    };
+    WIZCHIP.IF.SPI._write_bytes(spi_data, 5);
+
+    WIZCHIP.CS._deselect();
+    WIZCHIP_CRITICAL_EXIT();
+}
+
+void WIZCHIP_READ_BUF(uint32_t AddrSel, uint8_t* pBuf, uint16_t len) {
+    WIZCHIP_CRITICAL_ENTER();
+    WIZCHIP.CS._select();
+
+    uint8_t spi_data[4] = {
+        AddrSel >> 8,
+        AddrSel,
+        0x00 | ((len >> 8) & 0x7f),
+        len & 0xff,
+    };
+    WIZCHIP.IF.SPI._write_bytes(spi_data, 4);
+    WIZCHIP.IF.SPI._read_bytes(pBuf, len);
+
+    WIZCHIP.CS._deselect();
+    WIZCHIP_CRITICAL_EXIT();
+}
+
+void WIZCHIP_WRITE_BUF(uint32_t AddrSel, uint8_t* pBuf, uint16_t len) {
+    WIZCHIP_CRITICAL_ENTER();
+    WIZCHIP.CS._select();
+
+    uint8_t spi_data[4] = {
+        AddrSel >> 8,
+        AddrSel,
+        0x80 | ((len >> 8) & 0x7f),
+        len & 0xff,
+    };
+    WIZCHIP.IF.SPI._write_bytes(spi_data, 4);
+    WIZCHIP.IF.SPI._write_bytes(pBuf, len);
+
+    WIZCHIP.CS._deselect();
+    WIZCHIP_CRITICAL_EXIT();
+}
+
+uint16_t getSn_TX_FSR(uint8_t sn) {
+    uint16_t val = 0, val1 = 0;
+    do {
+        val1 = (WIZCHIP_READ(Sn_TX_FSR(sn)) << 8) | WIZCHIP_READ(Sn_TX_FSR(sn) + 1);
+        if (val1 != 0) {
+            val = (WIZCHIP_READ(Sn_TX_FSR(sn)) << 8) | WIZCHIP_READ(Sn_TX_FSR(sn) + 1);
+        }
+    } while (val != val1);
+    return val;
+}
+
+uint16_t getSn_RX_RSR(uint8_t sn) {
+    uint16_t val = 0, val1 = 0;
+    do {
+        val1 = (WIZCHIP_READ(Sn_RX_RSR(sn)) << 8) | WIZCHIP_READ(Sn_RX_RSR(sn) + 1);
+        if (val1 != 0) {
+            val = (WIZCHIP_READ(Sn_RX_RSR(sn)) << 8) | WIZCHIP_READ(Sn_RX_RSR(sn) + 1);
+        }
+    } while (val != val1);
+    return val;
+}
+
+void wiz_send_data(uint8_t sn, uint8_t *wizdata, uint16_t len) {
+    if (len == 0) {
+        return;
+    }
+
+    uint16_t ptr = getSn_TX_WR(sn);
+    uint16_t offset = ptr & SMASK;
+    uint32_t addr = offset + SBASE(sn);
+
+    if (offset + len > SSIZE) {
+        // implement wrap-around circular buffer
+        uint16_t size = SSIZE - offset;
+        WIZCHIP_WRITE_BUF(addr, wizdata, size);
+        WIZCHIP_WRITE_BUF(SBASE(sn), wizdata + size, len - size);
+    } else {
+        WIZCHIP_WRITE_BUF(addr, wizdata, len);
+    }
+
+    ptr += len;
+    setSn_TX_WR(sn, ptr);
+}
+
+void wiz_recv_data(uint8_t sn, uint8_t *wizdata, uint16_t len) {
+    if (len == 0) {
+        return;
+    }
+
+    uint16_t ptr = getSn_RX_RD(sn);
+    uint16_t offset = ptr & RMASK;
+    uint16_t addr = RBASE(sn) + offset;
+
+    if (offset + len > RSIZE) {
+        // implement wrap-around circular buffer
+        uint16_t size = RSIZE - offset;
+        WIZCHIP_READ_BUF(addr, wizdata, size);
+        WIZCHIP_READ_BUF(RBASE(sn), wizdata + size, len - size);
+    } else {
+        WIZCHIP_READ_BUF(addr, wizdata, len);
+    }
+
+    ptr += len;
+    setSn_RX_RD(sn, ptr);
+}
+
+void wiz_recv_ignore(uint8_t sn, uint16_t len) {
+    uint16_t ptr = getSn_RX_RD(sn);
+    ptr += len;
+    setSn_RX_RD(sn, ptr);
+}