LXR linux/drivers/net/ethernet/freescale/fs_enet/fs

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef FS_ENET_H
   3#define FS_ENET_H
   4
   5#include <linux/mii.h>
   6#include <linux/netdevice.h>
   7#include <linux/types.h>
   8#include <linux/list.h>
   9#include <linux/phy.h>
  10#include <linux/dma-mapping.h>
  11
  12#include <linux/fs_enet_pd.h>
  13#include <asm/fs_pd.h>
  14
  15#ifdef CONFIG_CPM1
  16#include <asm/cpm1.h>
  17#endif
  18
  19#if defined(CONFIG_FS_ENET_HAS_FEC)
  20#include <asm/cpm.h>
  21
  22#if defined(CONFIG_FS_ENET_MPC5121_FEC)
  23/* MPC5121 FEC has different register layout */
  24struct fec {
  25        u32 fec_reserved0;
  26        u32 fec_ievent;                 /* Interrupt event reg */
  27        u32 fec_imask;                  /* Interrupt mask reg */
  28        u32 fec_reserved1;
  29        u32 fec_r_des_active;           /* Receive descriptor reg */
  30        u32 fec_x_des_active;           /* Transmit descriptor reg */
  31        u32 fec_reserved2[3];
  32        u32 fec_ecntrl;                 /* Ethernet control reg */
  33        u32 fec_reserved3[6];
  34        u32 fec_mii_data;               /* MII manage frame reg */
  35        u32 fec_mii_speed;              /* MII speed control reg */
  36        u32 fec_reserved4[7];
  37        u32 fec_mib_ctrlstat;           /* MIB control/status reg */
  38        u32 fec_reserved5[7];
  39        u32 fec_r_cntrl;                /* Receive control reg */
  40        u32 fec_reserved6[15];
  41        u32 fec_x_cntrl;                /* Transmit Control reg */
  42        u32 fec_reserved7[7];
  43        u32 fec_addr_low;               /* Low 32bits MAC address */
  44        u32 fec_addr_high;              /* High 16bits MAC address */
  45        u32 fec_opd;                    /* Opcode + Pause duration */
  46        u32 fec_reserved8[10];
  47        u32 fec_hash_table_high;        /* High 32bits hash table */
  48        u32 fec_hash_table_low;         /* Low 32bits hash table */
  49        u32 fec_grp_hash_table_high;    /* High 32bits hash table */
  50        u32 fec_grp_hash_table_low;     /* Low 32bits hash table */
  51        u32 fec_reserved9[7];
  52        u32 fec_x_wmrk;                 /* FIFO transmit water mark */
  53        u32 fec_reserved10;
  54        u32 fec_r_bound;                /* FIFO receive bound reg */
  55        u32 fec_r_fstart;               /* FIFO receive start reg */
  56        u32 fec_reserved11[11];
  57        u32 fec_r_des_start;            /* Receive descriptor ring */
  58        u32 fec_x_des_start;            /* Transmit descriptor ring */
  59        u32 fec_r_buff_size;            /* Maximum receive buff size */
  60        u32 fec_reserved12[26];
  61        u32 fec_dma_control;            /* DMA Endian and other ctrl */
  62};
  63#endif
  64
  65struct fec_info {
  66        struct fec __iomem *fecp;
  67        u32 mii_speed;
  68};
  69#endif
  70
  71#ifdef CONFIG_CPM2
  72#include <asm/cpm2.h>
  73#endif
  74
  75/* hw driver ops */
  76struct fs_ops {
  77        int (*setup_data)(struct net_device *dev);
  78        int (*allocate_bd)(struct net_device *dev);
  79        void (*free_bd)(struct net_device *dev);
  80        void (*cleanup_data)(struct net_device *dev);
  81        void (*set_multicast_list)(struct net_device *dev);
  82        void (*adjust_link)(struct net_device *dev);
  83        void (*restart)(struct net_device *dev);
  84        void (*stop)(struct net_device *dev);
  85        void (*napi_clear_event)(struct net_device *dev);
  86        void (*napi_enable)(struct net_device *dev);
  87        void (*napi_disable)(struct net_device *dev);
  88        void (*rx_bd_done)(struct net_device *dev);
  89        void (*tx_kickstart)(struct net_device *dev);
  90        u32 (*get_int_events)(struct net_device *dev);
  91        void (*clear_int_events)(struct net_device *dev, u32 int_events);
  92        void (*ev_error)(struct net_device *dev, u32 int_events);
  93        int (*get_regs)(struct net_device *dev, void *p, int *sizep);
  94        int (*get_regs_len)(struct net_device *dev);
  95        void (*tx_restart)(struct net_device *dev);
  96};
  97
  98struct phy_info {
  99        unsigned int id;
 100        const char *name;
 101        void (*startup) (struct net_device * dev);
 102        void (*shutdown) (struct net_device * dev);
 103        void (*ack_int) (struct net_device * dev);
 104};
 105
 106/* The FEC stores dest/src/type, data, and checksum for receive packets.
 107 */
 108#define MAX_MTU 1508            /* Allow fullsized pppoe packets over VLAN */
 109#define MIN_MTU 46              /* this is data size */
 110#define CRC_LEN 4
 111
 112#define PKT_MAXBUF_SIZE         (MAX_MTU+ETH_HLEN+CRC_LEN)
 113#define PKT_MINBUF_SIZE         (MIN_MTU+ETH_HLEN+CRC_LEN)
 114
 115/* Must be a multiple of 32 (to cover both FEC & FCC) */
 116#define PKT_MAXBLR_SIZE         ((PKT_MAXBUF_SIZE + 31) & ~31)
 117/* This is needed so that invalidate_xxx wont invalidate too much */
 118#define ENET_RX_ALIGN  16
 119#define ENET_RX_FRSIZE L1_CACHE_ALIGN(PKT_MAXBUF_SIZE + ENET_RX_ALIGN - 1)
 120
 121struct fs_enet_private {
 122        struct napi_struct napi;
 123        struct device *dev;     /* pointer back to the device (must be initialized first) */
 124        struct net_device *ndev;
 125        spinlock_t lock;        /* during all ops except TX pckt processing */
 126        spinlock_t tx_lock;     /* during fs_start_xmit and fs_tx         */
 127        struct fs_platform_info *fpi;
 128        struct work_struct timeout_work;
 129        const struct fs_ops *ops;
 130        int rx_ring, tx_ring;
 131        dma_addr_t ring_mem_addr;
 132        void __iomem *ring_base;
 133        struct sk_buff **rx_skbuff;
 134        struct sk_buff **tx_skbuff;
 135        char *mapped_as_page;
 136        cbd_t __iomem *rx_bd_base;      /* Address of Rx and Tx buffers.    */
 137        cbd_t __iomem *tx_bd_base;
 138        cbd_t __iomem *dirty_tx;        /* ring entries to be free()ed.     */
 139        cbd_t __iomem *cur_rx;
 140        cbd_t __iomem *cur_tx;
 141        int tx_free;
 142        const struct phy_info *phy;
 143        u32 msg_enable;
 144        struct mii_if_info mii_if;
 145        unsigned int last_mii_status;
 146        int interrupt;
 147
 148        int oldduplex, oldspeed, oldlink;       /* current settings */
 149
 150        /* event masks */
 151        u32 ev_napi;            /* mask of NAPI events */
 152        u32 ev;                 /* event mask          */
 153        u32 ev_err;             /* error event mask       */
 154
 155        u16 bd_rx_empty;        /* mask of BD rx empty    */
 156        u16 bd_rx_err;          /* mask of BD rx errors   */
 157
 158        union {
 159                struct {
 160                        int idx;                /* FEC1 = 0, FEC2 = 1  */
 161                        void __iomem *fecp;     /* hw registers        */
 162                        u32 hthi, htlo;         /* state for multicast */
 163                } fec;
 164
 165                struct {
 166                        int idx;                /* FCC1-3 = 0-2        */
 167                        void __iomem *fccp;     /* hw registers        */
 168                        void __iomem *ep;       /* parameter ram       */
 169                        void __iomem *fcccp;    /* hw registers cont.  */
 170                        void __iomem *mem;      /* FCC DPRAM */
 171                        u32 gaddrh, gaddrl;     /* group address       */
 172                } fcc;
 173
 174                struct {
 175                        int idx;                /* FEC1 = 0, FEC2 = 1  */
 176                        void __iomem *sccp;     /* hw registers        */
 177                        void __iomem *ep;       /* parameter ram       */
 178                        u32 hthi, htlo;         /* state for multicast */
 179                } scc;
 180
 181        };
 182};
 183
 184/***************************************************************************/
 185
 186void fs_init_bds(struct net_device *dev);
 187void fs_cleanup_bds(struct net_device *dev);
 188
 189/***************************************************************************/
 190
 191#define DRV_MODULE_NAME         "fs_enet"
 192#define PFX DRV_MODULE_NAME     ": "
 193#define DRV_MODULE_VERSION      "1.1"
 194#define DRV_MODULE_RELDATE      "Sep 22, 2014"
 195
 196/***************************************************************************/
 197
 198int fs_enet_platform_init(void);
 199void fs_enet_platform_cleanup(void);
 200
 201/***************************************************************************/
 202/* buffer descriptor access macros */
 203
 204/* access macros */
 205#if defined(CONFIG_CPM1)
 206/* for a a CPM1 __raw_xxx's are sufficient */
 207#define __cbd_out32(addr, x)    __raw_writel(x, addr)
 208#define __cbd_out16(addr, x)    __raw_writew(x, addr)
 209#define __cbd_in32(addr)        __raw_readl(addr)
 210#define __cbd_in16(addr)        __raw_readw(addr)
 211#else
 212/* for others play it safe */
 213#define __cbd_out32(addr, x)    out_be32(addr, x)
 214#define __cbd_out16(addr, x)    out_be16(addr, x)
 215#define __cbd_in32(addr)        in_be32(addr)
 216#define __cbd_in16(addr)        in_be16(addr)
 217#endif
 218
 219/* write */
 220#define CBDW_SC(_cbd, _sc)              __cbd_out16(&(_cbd)->cbd_sc, (_sc))
 221#define CBDW_DATLEN(_cbd, _datlen)      __cbd_out16(&(_cbd)->cbd_datlen, (_datlen))
 222#define CBDW_BUFADDR(_cbd, _bufaddr)    __cbd_out32(&(_cbd)->cbd_bufaddr, (_bufaddr))
 223
 224/* read */
 225#define CBDR_SC(_cbd)                   __cbd_in16(&(_cbd)->cbd_sc)
 226#define CBDR_DATLEN(_cbd)               __cbd_in16(&(_cbd)->cbd_datlen)
 227#define CBDR_BUFADDR(_cbd)              __cbd_in32(&(_cbd)->cbd_bufaddr)
 228
 229/* set bits */
 230#define CBDS_SC(_cbd, _sc)              CBDW_SC(_cbd, CBDR_SC(_cbd) | (_sc))
 231
 232/* clear bits */
 233#define CBDC_SC(_cbd, _sc)              CBDW_SC(_cbd, CBDR_SC(_cbd) & ~(_sc))
 234
 235/*******************************************************************/
 236
 237extern const struct fs_ops fs_fec_ops;
 238extern const struct fs_ops fs_fcc_ops;
 239extern const struct fs_ops fs_scc_ops;
 240
 241/*******************************************************************/
 242
 243#endif
 244