278 lines
7.4 KiB
C
278 lines
7.4 KiB
C
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/* 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/acpi.h>
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#include <linux/clk.h>
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#include <linux/efi.h>
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#include <linux/irq.h>
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#include <linux/io.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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#include "xgene_enet_cle.h"
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#include "xgene_enet_ring2.h"
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#include "../../../phy/mdio-xgene.h"
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#define XGENE_DRV_VERSION "v1.0"
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#define ETHER_MIN_PACKET 64
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#define ETHER_STD_PACKET 1518
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#define XGENE_ENET_STD_MTU 1536
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#define XGENE_ENET_MAX_MTU 9600
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#define SKB_BUFFER_SIZE (XGENE_ENET_STD_MTU - NET_IP_ALIGN)
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#define BUFLEN_16K (16 * 1024)
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#define NUM_PKT_BUF 1024
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#define NUM_BUFPOOL 32
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#define NUM_NXTBUFPOOL 8
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#define MAX_EXP_BUFFS 256
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#define NUM_MSS_REG 4
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#define XGENE_MIN_ENET_FRAME_SIZE 60
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#define XGENE_MAX_ENET_IRQ 16
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#define XGENE_NUM_RX_RING 8
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#define XGENE_NUM_TX_RING 8
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#define XGENE_NUM_TXC_RING 8
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#define START_CPU_BUFNUM_0 0
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#define START_ETH_BUFNUM_0 2
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#define START_BP_BUFNUM_0 0x22
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#define START_RING_NUM_0 8
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#define START_CPU_BUFNUM_1 12
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#define START_ETH_BUFNUM_1 10
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#define START_BP_BUFNUM_1 0x2A
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#define START_RING_NUM_1 264
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#define XG_START_CPU_BUFNUM_1 12
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#define XG_START_ETH_BUFNUM_1 2
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#define XG_START_BP_BUFNUM_1 0x22
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#define XG_START_RING_NUM_1 264
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#define X2_START_CPU_BUFNUM_0 0
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#define X2_START_ETH_BUFNUM_0 0
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#define X2_START_BP_BUFNUM_0 0x20
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#define X2_START_RING_NUM_0 0
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#define X2_START_CPU_BUFNUM_1 0xc
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#define X2_START_ETH_BUFNUM_1 0
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#define X2_START_BP_BUFNUM_1 0x20
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#define X2_START_RING_NUM_1 256
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#define IRQ_ID_SIZE 16
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#define PHY_POLL_LINK_ON (10 * HZ)
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#define PHY_POLL_LINK_OFF (PHY_POLL_LINK_ON / 5)
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enum xgene_enet_id {
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XGENE_ENET1 = 1,
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XGENE_ENET2
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};
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enum xgene_enet_buf_len {
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SIZE_2K = 2048,
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SIZE_4K = 4096,
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SIZE_16K = 16384
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};
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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 exp_buf_tail;
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u16 slots;
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u16 irq;
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char irq_name[IRQ_ID_SIZE];
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u32 size;
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u32 state[X2_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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dma_addr_t irq_mbox_dma;
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void *irq_mbox_addr;
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u16 dst_ring_num;
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u16 nbufpool;
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int npagepool;
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u8 index;
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u32 flags;
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struct sk_buff *(*rx_skb);
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struct sk_buff *(*cp_skb);
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dma_addr_t *frag_dma_addr;
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struct page *(*frag_page);
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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 xgene_enet_desc_ring *page_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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__le64 *exp_bufs;
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u64 tx_packets;
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u64 tx_bytes;
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u64 tx_dropped;
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u64 tx_errors;
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u64 rx_packets;
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u64 rx_bytes;
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u64 rx_dropped;
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u64 rx_errors;
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u64 rx_length_errors;
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u64 rx_crc_errors;
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u64 rx_frame_errors;
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u64 rx_fifo_errors;
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};
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struct xgene_mac_ops {
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void (*init)(struct xgene_enet_pdata *pdata);
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void (*reset)(struct xgene_enet_pdata *pdata);
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void (*tx_enable)(struct xgene_enet_pdata *pdata);
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void (*rx_enable)(struct xgene_enet_pdata *pdata);
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void (*tx_disable)(struct xgene_enet_pdata *pdata);
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void (*rx_disable)(struct xgene_enet_pdata *pdata);
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void (*get_drop_cnt)(struct xgene_enet_pdata *pdata, u32 *rx, u32 *tx);
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void (*set_speed)(struct xgene_enet_pdata *pdata);
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void (*set_mac_addr)(struct xgene_enet_pdata *pdata);
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void (*set_framesize)(struct xgene_enet_pdata *pdata, int framesize);
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void (*set_mss)(struct xgene_enet_pdata *pdata, u16 mss, u8 index);
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void (*link_state)(struct work_struct *work);
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void (*enable_tx_pause)(struct xgene_enet_pdata *pdata, bool enable);
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void (*flowctl_rx)(struct xgene_enet_pdata *pdata, bool enable);
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void (*flowctl_tx)(struct xgene_enet_pdata *pdata, bool enable);
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};
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struct xgene_port_ops {
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int (*reset)(struct xgene_enet_pdata *pdata);
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void (*clear)(struct xgene_enet_pdata *pdata,
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struct xgene_enet_desc_ring *ring);
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void (*cle_bypass)(struct xgene_enet_pdata *pdata,
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u32 dst_ring_num, u16 bufpool_id, u16 nxtbufpool_id);
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void (*shutdown)(struct xgene_enet_pdata *pdata);
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};
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struct xgene_ring_ops {
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u8 num_ring_config;
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u8 num_ring_id_shift;
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struct xgene_enet_desc_ring * (*setup)(struct xgene_enet_desc_ring *);
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void (*clear)(struct xgene_enet_desc_ring *);
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void (*wr_cmd)(struct xgene_enet_desc_ring *, int);
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u32 (*len)(struct xgene_enet_desc_ring *);
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void (*coalesce)(struct xgene_enet_desc_ring *);
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};
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struct xgene_cle_ops {
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int (*cle_init)(struct xgene_enet_pdata *pdata);
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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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int phy_speed;
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struct clk *clk;
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struct platform_device *pdev;
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enum xgene_enet_id enet_id;
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struct xgene_enet_desc_ring *tx_ring[XGENE_NUM_TX_RING];
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struct xgene_enet_desc_ring *rx_ring[XGENE_NUM_RX_RING];
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u16 tx_level[XGENE_NUM_TX_RING];
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u16 txc_level[XGENE_NUM_TX_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 irqs[XGENE_MAX_ENET_IRQ];
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u8 rxq_cnt;
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u8 txq_cnt;
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u8 cq_cnt;
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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_mac_csr_addr;
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void __iomem *mcx_stats_addr;
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void __iomem *base_addr;
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void __iomem *pcs_addr;
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void __iomem *ring_csr_addr;
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void __iomem *ring_cmd_addr;
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int phy_mode;
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enum xgene_enet_rm rm;
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struct xgene_enet_cle cle;
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u64 *extd_stats;
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u64 false_rflr;
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u64 vlan_rjbr;
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spinlock_t stats_lock; /* statistics lock */
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const struct xgene_mac_ops *mac_ops;
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spinlock_t mac_lock; /* mac lock */
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const struct xgene_port_ops *port_ops;
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struct xgene_ring_ops *ring_ops;
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const struct xgene_cle_ops *cle_ops;
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struct delayed_work link_work;
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u32 port_id;
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u8 cpu_bufnum;
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u8 eth_bufnum;
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u8 bp_bufnum;
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u16 ring_num;
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u32 mss[NUM_MSS_REG];
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u32 mss_refcnt[NUM_MSS_REG];
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spinlock_t mss_lock; /* mss lock */
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u8 tx_delay;
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u8 rx_delay;
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bool mdio_driver;
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struct gpio_desc *sfp_rdy;
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bool sfp_gpio_en;
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u32 pause_autoneg;
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bool tx_pause;
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bool rx_pause;
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};
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struct xgene_indirect_ctl {
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void __iomem *addr;
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void __iomem *ctl;
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void __iomem *cmd;
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void __iomem *cmd_done;
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};
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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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static inline u16 xgene_enet_dst_ring_num(struct xgene_enet_desc_ring *ring)
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{
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struct xgene_enet_pdata *pdata = netdev_priv(ring->ndev);
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return ((u16)pdata->rm << 10) | ring->num;
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}
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void xgene_enet_set_ethtool_ops(struct net_device *netdev);
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int xgene_extd_stats_init(struct xgene_enet_pdata *pdata);
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#endif /* __XGENE_ENET_MAIN_H__ */
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