diff options
Diffstat (limited to 'drivers/net/xilinx_ll_temac_fifo.c')
| -rw-r--r-- | drivers/net/xilinx_ll_temac_fifo.c | 139 |
1 files changed, 0 insertions, 139 deletions
diff --git a/drivers/net/xilinx_ll_temac_fifo.c b/drivers/net/xilinx_ll_temac_fifo.c deleted file mode 100644 index 78319d7d91..0000000000 --- a/drivers/net/xilinx_ll_temac_fifo.c +++ /dev/null @@ -1,139 +0,0 @@ -/* - * Xilinx xps_ll_temac ethernet driver for u-boot - * - * FIFO sub-controller - * - * Copyright (C) 2011 - 2012 Stephan Linz <linz@li-pro.net> - * Copyright (C) 2008 - 2011 Michal Simek <monstr@monstr.eu> - * Copyright (C) 2008 - 2011 PetaLogix - * - * Based on Yoshio Kashiwagi kashiwagi@co-nss.co.jp driver - * Copyright (C) 2008 Nissin Systems Co.,Ltd. - * March 2008 created - * - * CREDITS: tsec driver - * - * SPDX-License-Identifier: GPL-2.0+ - * - * [0]: http://www.xilinx.com/support/documentation - * - * [F]: [0]/ip_documentation/xps_ll_fifo.pdf - * [S]: [0]/ip_documentation/xps_ll_temac.pdf - * [A]: [0]/application_notes/xapp1041.pdf - */ - -#include <config.h> -#include <common.h> -#include <net.h> - -#include <asm/types.h> -#include <asm/io.h> - -#include "xilinx_ll_temac.h" -#include "xilinx_ll_temac_fifo.h" - -int ll_temac_reset_fifo(struct eth_device *dev) -{ - struct ll_temac *ll_temac = dev->priv; - struct fifo_ctrl *fifo_ctrl = (void *)ll_temac->ctrladdr; - - out_be32(&fifo_ctrl->tdfr, LL_FIFO_TDFR_KEY); - out_be32(&fifo_ctrl->rdfr, LL_FIFO_RDFR_KEY); - out_be32(&fifo_ctrl->isr, ~0UL); - out_be32(&fifo_ctrl->ier, 0); - - return 0; -} - -int ll_temac_recv_fifo(struct eth_device *dev) -{ - int i, length = 0; - u32 *buf = (u32 *)net_rx_packets[0]; - struct ll_temac *ll_temac = dev->priv; - struct fifo_ctrl *fifo_ctrl = (void *)ll_temac->ctrladdr; - - if (in_be32(&fifo_ctrl->isr) & LL_FIFO_ISR_RC) { - - /* reset isr */ - out_be32(&fifo_ctrl->isr, ~0UL); - - /* - * MAYBE here: - * while (fifo_ctrl->isr); - */ - - /* - * The length is written (into RLR) by the XPS LL FIFO - * when the packet is received across the RX LocalLink - * interface and the receive data FIFO had enough - * locations that all of the packet data has been saved. - * The RLR should only be read when a receive packet is - * available for processing (the receive occupancy is - * not zero). Once the RLR is read, the receive packet - * data should be read from the receive data FIFO before - * the RLR is read again. - * - * [F] page 17, Receive Length Register (RLR) - */ - if (in_be32(&fifo_ctrl->rdfo) & LL_FIFO_RDFO_MASK) { - length = in_be32(&fifo_ctrl->rlf) & LL_FIFO_RLF_MASK; - } else { - printf("%s: Got error, no receive occupancy\n", - __func__); - return -1; - } - - if (length > PKTSIZE_ALIGN) { - printf("%s: Got error, receive package too big (%i)\n", - __func__, length); - ll_temac_reset_fifo(dev); - return -1; - } - - for (i = 0; i < length; i += 4) - *buf++ = in_be32(&fifo_ctrl->rdfd); - - net_process_received_packet(net_rx_packets[0], length); - } - - return 0; -} - -int ll_temac_send_fifo(struct eth_device *dev, void *packet, int length) -{ - int i; - u32 *buf = (u32 *)packet; - struct ll_temac *ll_temac = dev->priv; - struct fifo_ctrl *fifo_ctrl = (void *)ll_temac->ctrladdr; - - if (length < LL_FIFO_TLF_MIN) { - printf("%s: Got error, transmit package too small (%i)\n", - __func__, length); - return -1; - } - - if (length > LL_FIFO_TLF_MAX) { - printf("%s: Got error, transmit package too big (%i)\n", - __func__, length); - return -1; - } - - for (i = 0; i < length; i += 4) - out_be32(&fifo_ctrl->tdfd, *buf++); - - /* - * Once the packet length is written to the TLR it is - * automatically moved to the transmit data FIFO with - * the packet data freeing up the TLR for another value. - * The packet length must be written to the TLR after - * the packet data is written to the transmit data FIFO. - * It is not valid to write data for multiple packets - * to the transmit data FIFO before writing the packet - * length values. - * - * [F] page 17, Transmit Length Register (TLR) - */ - out_be32(&fifo_ctrl->tlf, length); - - return 0; -} |