cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

enet.c (1673B)

      1// SPDX-License-Identifier: GPL-2.0-or-later
      2/*
      3 * Applied Micro X-Gene SoC Ethernet v2 Driver
      4 *
      5 * Copyright (c) 2017, Applied Micro Circuits Corporation
      6 * Author(s): Iyappan Subramanian <isubramanian@apm.com>
      7 *	      Keyur Chudgar <kchudgar@apm.com>
      8 */
      9
     10#include "main.h"
     11
     12void xge_wr_csr(struct xge_pdata *pdata, u32 offset, u32 val)
     13{
     14	void __iomem *addr = pdata->resources.base_addr + offset;
     15
     16	iowrite32(val, addr);
     17}
     18
     19u32 xge_rd_csr(struct xge_pdata *pdata, u32 offset)
     20{
     21	void __iomem *addr = pdata->resources.base_addr + offset;
     22
     23	return ioread32(addr);
     24}
     25
     26int xge_port_reset(struct net_device *ndev)
     27{
     28	struct xge_pdata *pdata = netdev_priv(ndev);
     29	struct device *dev = &pdata->pdev->dev;
     30	u32 data, wait = 10;
     31
     32	xge_wr_csr(pdata, ENET_CLKEN, 0x3);
     33	xge_wr_csr(pdata, ENET_SRST, 0xf);
     34	xge_wr_csr(pdata, ENET_SRST, 0);
     35	xge_wr_csr(pdata, CFG_MEM_RAM_SHUTDOWN, 1);
     36	xge_wr_csr(pdata, CFG_MEM_RAM_SHUTDOWN, 0);
     37
     38	do {
     39		usleep_range(100, 110);
     40		data = xge_rd_csr(pdata, BLOCK_MEM_RDY);
     41	} while (data != MEM_RDY && wait--);
     42
     43	if (data != MEM_RDY) {
     44		dev_err(dev, "ECC init failed: %x\n", data);
     45		return -ETIMEDOUT;
     46	}
     47
     48	xge_wr_csr(pdata, ENET_SHIM, DEVM_ARAUX_COH | DEVM_AWAUX_COH);
     49
     50	return 0;
     51}
     52
     53static void xge_traffic_resume(struct net_device *ndev)
     54{
     55	struct xge_pdata *pdata = netdev_priv(ndev);
     56
     57	xge_wr_csr(pdata, CFG_FORCE_LINK_STATUS_EN, 1);
     58	xge_wr_csr(pdata, FORCE_LINK_STATUS, 1);
     59
     60	xge_wr_csr(pdata, CFG_LINK_AGGR_RESUME, 1);
     61	xge_wr_csr(pdata, RX_DV_GATE_REG, 1);
     62}
     63
     64void xge_port_init(struct net_device *ndev)
     65{
     66	struct xge_pdata *pdata = netdev_priv(ndev);
     67
     68	pdata->phy_speed = SPEED_1000;
     69	xge_mac_init(pdata);
     70	xge_traffic_resume(ndev);
     71}