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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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31ea38eefe
On some platforms, for example where we are doing the bring-up, the csr clock is not passed from the framework and the Ethernet device driver is failing when it can work w/o any issues and using the default values. So this patch just warnings the case of the csr clock cannot be acquired but w/o failing the probe step. I have just tested it on ST STiH415 SoC (ARM). Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
145 lines
3.8 KiB
C
145 lines
3.8 KiB
C
/*******************************************************************************
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Copyright (C) 2007-2009 STMicroelectronics Ltd
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This program is free software; you can redistribute it and/or modify it
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under the terms and conditions of the GNU General Public License,
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version 2, as published by the Free Software Foundation.
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This program is distributed in the hope it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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The full GNU General Public License is included in this distribution in
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the file called "COPYING".
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Author: Giuseppe Cavallaro <peppe.cavallaro@st.com>
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*******************************************************************************/
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#define STMMAC_RESOURCE_NAME "stmmaceth"
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#define DRV_MODULE_VERSION "March_2012"
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#include <linux/clk.h>
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#include <linux/stmmac.h>
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#include <linux/phy.h>
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#include "common.h"
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#ifdef CONFIG_STMMAC_TIMER
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#include "stmmac_timer.h"
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#endif
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struct stmmac_priv {
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/* Frequently used values are kept adjacent for cache effect */
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struct dma_desc *dma_tx ____cacheline_aligned;
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dma_addr_t dma_tx_phy;
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struct sk_buff **tx_skbuff;
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unsigned int cur_tx;
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unsigned int dirty_tx;
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unsigned int dma_tx_size;
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int tx_coalesce;
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struct dma_desc *dma_rx ;
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unsigned int cur_rx;
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unsigned int dirty_rx;
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struct sk_buff **rx_skbuff;
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dma_addr_t *rx_skbuff_dma;
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struct sk_buff_head rx_recycle;
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struct net_device *dev;
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dma_addr_t dma_rx_phy;
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unsigned int dma_rx_size;
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unsigned int dma_buf_sz;
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struct device *device;
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struct mac_device_info *hw;
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void __iomem *ioaddr;
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struct stmmac_extra_stats xstats;
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struct napi_struct napi;
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int no_csum_insertion;
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struct phy_device *phydev;
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int oldlink;
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int speed;
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int oldduplex;
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unsigned int flow_ctrl;
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unsigned int pause;
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struct mii_bus *mii;
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int mii_irq[PHY_MAX_ADDR];
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u32 msg_enable;
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spinlock_t lock;
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spinlock_t tx_lock;
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int wolopts;
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int wol_irq;
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#ifdef CONFIG_STMMAC_TIMER
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struct stmmac_timer *tm;
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#endif
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struct plat_stmmacenet_data *plat;
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struct stmmac_counters mmc;
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struct dma_features dma_cap;
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int hw_cap_support;
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#ifdef CONFIG_HAVE_CLK
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struct clk *stmmac_clk;
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#endif
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int clk_csr;
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};
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extern int phyaddr;
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extern int stmmac_mdio_unregister(struct net_device *ndev);
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extern int stmmac_mdio_register(struct net_device *ndev);
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extern void stmmac_set_ethtool_ops(struct net_device *netdev);
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extern const struct stmmac_desc_ops enh_desc_ops;
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extern const struct stmmac_desc_ops ndesc_ops;
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int stmmac_freeze(struct net_device *ndev);
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int stmmac_restore(struct net_device *ndev);
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int stmmac_resume(struct net_device *ndev);
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int stmmac_suspend(struct net_device *ndev);
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int stmmac_dvr_remove(struct net_device *ndev);
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struct stmmac_priv *stmmac_dvr_probe(struct device *device,
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struct plat_stmmacenet_data *plat_dat,
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void __iomem *addr);
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#ifdef CONFIG_HAVE_CLK
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static inline int stmmac_clk_enable(struct stmmac_priv *priv)
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{
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if (!IS_ERR(priv->stmmac_clk))
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return clk_enable(priv->stmmac_clk);
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return 0;
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}
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static inline void stmmac_clk_disable(struct stmmac_priv *priv)
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{
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if (IS_ERR(priv->stmmac_clk))
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return;
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clk_disable(priv->stmmac_clk);
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}
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static inline int stmmac_clk_get(struct stmmac_priv *priv)
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{
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priv->stmmac_clk = clk_get(priv->device, NULL);
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if (IS_ERR(priv->stmmac_clk))
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return PTR_ERR(priv->stmmac_clk);
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return 0;
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}
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#else
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static inline int stmmac_clk_enable(struct stmmac_priv *priv)
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{
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return 0;
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}
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static inline void stmmac_clk_disable(struct stmmac_priv *priv)
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{
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}
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static inline int stmmac_clk_get(struct stmmac_priv *priv)
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{
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return 0;
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}
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#endif /* CONFIG_HAVE_CLK */
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