drivers/net/ethernet/freescale/fs_enet/fs_enet.h

   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 */
  24 struct 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
  65 struct 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 */
  76 struct 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
  98 struct 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
 121 struct 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         const struct fs_ops *ops;
 129         int rx_ring, tx_ring;
 130         dma_addr_t ring_mem_addr;
 131         void __iomem *ring_base;
 132         struct sk_buff **rx_skbuff;
 133         struct sk_buff **tx_skbuff;
 134         char *mapped_as_page;
 135         cbd_t __iomem *rx_bd_base;      /* Address of Rx and Tx buffers.    */
 136         cbd_t __iomem *tx_bd_base;
 137         cbd_t __iomem *dirty_tx;        /* ring entries to be free()ed.     */
 138         cbd_t __iomem *cur_rx;
 139         cbd_t __iomem *cur_tx;
 140         int tx_free;
 141         struct timer_list phy_timer_list;
 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
 186 void fs_init_bds(struct net_device *dev);
 187 void 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
 198 int fs_enet_platform_init(void);
 199 void 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
 237 extern const struct fs_ops fs_fec_ops;
 238 extern const struct fs_ops fs_fcc_ops;
 239 extern const struct fs_ops fs_scc_ops;
 240
 241 /*******************************************************************/
 242
 243 #endif