diff options
Diffstat (limited to 'drivers/wiznet5k/ethernet/w5200/w5200.c')
| -rw-r--r-- | drivers/wiznet5k/ethernet/w5200/w5200.c | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/drivers/wiznet5k/ethernet/w5200/w5200.c b/drivers/wiznet5k/ethernet/w5200/w5200.c new file mode 100644 index 000000000..8c3780792 --- /dev/null +++ b/drivers/wiznet5k/ethernet/w5200/w5200.c @@ -0,0 +1,206 @@ +// 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); +} |