forked from Minki/linux
e6ad767305
This patch adds network driver for APM X-Gene SoC ethernet. Signed-off-by: Iyappan Subramanian <isubramanian@apm.com> Signed-off-by: Ravi Patel <rapatel@apm.com> Signed-off-by: Keyur Chudgar <kchudgar@apm.com> Signed-off-by: Dean Nelson <dnelson@redhat.com> Reviewed-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
136 lines
3.6 KiB
C
136 lines
3.6 KiB
C
/* Applied Micro X-Gene SoC Ethernet Driver
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*
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* Copyright (c) 2014, Applied Micro Circuits Corporation
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* Authors: Iyappan Subramanian <isubramanian@apm.com>
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* Ravi Patel <rapatel@apm.com>
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* Keyur Chudgar <kchudgar@apm.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __XGENE_ENET_MAIN_H__
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#define __XGENE_ENET_MAIN_H__
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#include <linux/clk.h>
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#include <linux/of_platform.h>
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#include <linux/of_net.h>
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#include <linux/of_mdio.h>
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#include <linux/module.h>
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#include <net/ip.h>
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#include <linux/prefetch.h>
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#include <linux/if_vlan.h>
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#include <linux/phy.h>
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#include "xgene_enet_hw.h"
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#define XGENE_DRV_VERSION "v1.0"
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#define XGENE_ENET_MAX_MTU 1536
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#define SKB_BUFFER_SIZE (XGENE_ENET_MAX_MTU - NET_IP_ALIGN)
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#define NUM_PKT_BUF 64
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#define NUM_BUFPOOL 32
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/* software context of a descriptor ring */
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struct xgene_enet_desc_ring {
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struct net_device *ndev;
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u16 id;
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u16 num;
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u16 head;
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u16 tail;
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u16 slots;
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u16 irq;
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u32 size;
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u32 state[NUM_RING_CONFIG];
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void __iomem *cmd_base;
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void __iomem *cmd;
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dma_addr_t dma;
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u16 dst_ring_num;
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u8 nbufpool;
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struct sk_buff *(*rx_skb);
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struct sk_buff *(*cp_skb);
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enum xgene_enet_ring_cfgsize cfgsize;
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struct xgene_enet_desc_ring *cp_ring;
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struct xgene_enet_desc_ring *buf_pool;
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struct napi_struct napi;
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union {
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void *desc_addr;
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struct xgene_enet_raw_desc *raw_desc;
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struct xgene_enet_raw_desc16 *raw_desc16;
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};
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};
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/* ethernet private data */
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struct xgene_enet_pdata {
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struct net_device *ndev;
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struct mii_bus *mdio_bus;
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struct phy_device *phy_dev;
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int phy_speed;
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struct clk *clk;
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struct platform_device *pdev;
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struct xgene_enet_desc_ring *tx_ring;
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struct xgene_enet_desc_ring *rx_ring;
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char *dev_name;
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u32 rx_buff_cnt;
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u32 tx_qcnt_hi;
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u32 cp_qcnt_hi;
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u32 cp_qcnt_low;
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u32 rx_irq;
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void __iomem *eth_csr_addr;
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void __iomem *eth_ring_if_addr;
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void __iomem *eth_diag_csr_addr;
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void __iomem *mcx_mac_addr;
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void __iomem *mcx_stats_addr;
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void __iomem *mcx_mac_csr_addr;
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void __iomem *base_addr;
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void __iomem *ring_csr_addr;
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void __iomem *ring_cmd_addr;
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u32 phy_addr;
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int phy_mode;
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u32 speed;
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u16 rm;
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struct rtnl_link_stats64 stats;
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};
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/* Set the specified value into a bit-field defined by its starting position
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* and length within a single u64.
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*/
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static inline u64 xgene_enet_set_field_value(int pos, int len, u64 val)
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{
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return (val & ((1ULL << len) - 1)) << pos;
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}
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#define SET_VAL(field, val) \
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xgene_enet_set_field_value(field ## _POS, field ## _LEN, val)
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#define SET_BIT(field) \
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xgene_enet_set_field_value(field ## _POS, 1, 1)
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/* Get the value from a bit-field defined by its starting position
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* and length within the specified u64.
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*/
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static inline u64 xgene_enet_get_field_value(int pos, int len, u64 src)
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{
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return (src >> pos) & ((1ULL << len) - 1);
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}
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#define GET_VAL(field, src) \
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xgene_enet_get_field_value(field ## _POS, field ## _LEN, src)
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static inline struct device *ndev_to_dev(struct net_device *ndev)
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{
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return ndev->dev.parent;
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}
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void xgene_enet_set_ethtool_ops(struct net_device *netdev);
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#endif /* __XGENE_ENET_MAIN_H__ */
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