FEC - fast ethernet controller for mpc52xx

Driver for ethernet on mpc5200/mpc5200b SoCs (FEC).

Signed-off-by: Domen Puncer <domen.puncer@telargo.com>
Acked-by: Dale Farnsworth <dale@farnsworth.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 313 insertions, 0 deletions

diff --git a/drivers/net/fec_mpc52xx.h b/drivers/net/fec_mpc52xx.h
new file mode 100644
index 000000000000..8b1f75397b9a
--- /dev/null
+++ b/drivers/net/fec_mpc52xx.h
@@ -0,0 +1,313 @@
+/*
+ * drivers/drivers/net/fec_mpc52xx/fec.h
+ *
+ * Driver for the MPC5200 Fast Ethernet Controller
+ *
+ * Author: Dale Farnsworth <dfarnsworth@mvista.com>
+ *
+ * 2003-2004 (c) MontaVista, Software, Inc.  This file is licensed under
+ * the terms of the GNU General Public License version 2.  This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ */
+
+#ifndef __DRIVERS_NET_MPC52XX_FEC_H__
+#define __DRIVERS_NET_MPC52XX_FEC_H__
+
+#include <linux/phy.h>
+
+/* Tunable constant */
+/* FEC_RX_BUFFER_SIZE includes 4 bytes for CRC32 */
+#define FEC_RX_BUFFER_SIZE      1522    /* max receive packet size */
+#define FEC_RX_NUM_BD           256
+#define FEC_TX_NUM_BD           64
+
+#define FEC_RESET_DELAY         50      /* uS */
+
+#define FEC_WATCHDOG_TIMEOUT    ((400*HZ)/1000)
+
+struct mpc52xx_fec_priv {
+        int duplex;
+        int r_irq;
+        int t_irq;
+        struct mpc52xx_fec __iomem *fec;
+        struct bcom_task *rx_dmatsk;
+        struct bcom_task *tx_dmatsk;
+        spinlock_t lock;
+        int msg_enable;
+
+        int has_phy;
+        unsigned int phy_speed;
+        unsigned int phy_addr;
+        struct phy_device *phydev;
+        enum phy_state link;
+        int speed;
+};
+
+
+/* ======================================================================== */
+/* Hardware register sets & bits                                            */
+/* ======================================================================== */
+
+struct mpc52xx_fec {
+        u32 fec_id;                     /* FEC + 0x000 */
+        u32 ievent;                     /* FEC + 0x004 */
+        u32 imask;                      /* FEC + 0x008 */
+
+        u32 reserved0[1];               /* FEC + 0x00C */
+        u32 r_des_active;               /* FEC + 0x010 */
+        u32 x_des_active;               /* FEC + 0x014 */
+        u32 r_des_active_cl;            /* FEC + 0x018 */
+        u32 x_des_active_cl;            /* FEC + 0x01C */
+        u32 ivent_set;                  /* FEC + 0x020 */
+        u32 ecntrl;                     /* FEC + 0x024 */
+
+        u32 reserved1[6];               /* FEC + 0x028-03C */
+        u32 mii_data;                   /* FEC + 0x040 */
+        u32 mii_speed;                  /* FEC + 0x044 */
+        u32 mii_status;                 /* FEC + 0x048 */
+
+        u32 reserved2[5];               /* FEC + 0x04C-05C */
+        u32 mib_data;                   /* FEC + 0x060 */
+        u32 mib_control;                /* FEC + 0x064 */
+
+        u32 reserved3[6];               /* FEC + 0x068-7C */
+        u32 r_activate;                 /* FEC + 0x080 */
+        u32 r_cntrl;                    /* FEC + 0x084 */
+        u32 r_hash;                     /* FEC + 0x088 */
+        u32 r_data;                     /* FEC + 0x08C */
+        u32 ar_done;                    /* FEC + 0x090 */
+        u32 r_test;                     /* FEC + 0x094 */
+        u32 r_mib;                      /* FEC + 0x098 */
+        u32 r_da_low;                   /* FEC + 0x09C */
+        u32 r_da_high;                  /* FEC + 0x0A0 */
+
+        u32 reserved4[7];               /* FEC + 0x0A4-0BC */
+        u32 x_activate;                 /* FEC + 0x0C0 */
+        u32 x_cntrl;                    /* FEC + 0x0C4 */
+        u32 backoff;                    /* FEC + 0x0C8 */
+        u32 x_data;                     /* FEC + 0x0CC */
+        u32 x_status;                   /* FEC + 0x0D0 */
+        u32 x_mib;                      /* FEC + 0x0D4 */
+        u32 x_test;                     /* FEC + 0x0D8 */
+        u32 fdxfc_da1;                  /* FEC + 0x0DC */
+        u32 fdxfc_da2;                  /* FEC + 0x0E0 */
+        u32 paddr1;                     /* FEC + 0x0E4 */
+        u32 paddr2;                     /* FEC + 0x0E8 */
+        u32 op_pause;                   /* FEC + 0x0EC */
+
+        u32 reserved5[4];               /* FEC + 0x0F0-0FC */
+        u32 instr_reg;                  /* FEC + 0x100 */
+        u32 context_reg;                /* FEC + 0x104 */
+        u32 test_cntrl;                 /* FEC + 0x108 */
+        u32 acc_reg;                    /* FEC + 0x10C */
+        u32 ones;                       /* FEC + 0x110 */
+        u32 zeros;                      /* FEC + 0x114 */
+        u32 iaddr1;                     /* FEC + 0x118 */
+        u32 iaddr2;                     /* FEC + 0x11C */
+        u32 gaddr1;                     /* FEC + 0x120 */
+        u32 gaddr2;                     /* FEC + 0x124 */
+        u32 random;                     /* FEC + 0x128 */
+        u32 rand1;                      /* FEC + 0x12C */
+        u32 tmp;                        /* FEC + 0x130 */
+
+        u32 reserved6[3];               /* FEC + 0x134-13C */
+        u32 fifo_id;                    /* FEC + 0x140 */
+        u32 x_wmrk;                     /* FEC + 0x144 */
+        u32 fcntrl;                     /* FEC + 0x148 */
+        u32 r_bound;                    /* FEC + 0x14C */
+        u32 r_fstart;                   /* FEC + 0x150 */
+        u32 r_count;                    /* FEC + 0x154 */
+        u32 r_lag;                      /* FEC + 0x158 */
+        u32 r_read;                     /* FEC + 0x15C */
+        u32 r_write;                    /* FEC + 0x160 */
+        u32 x_count;                    /* FEC + 0x164 */
+        u32 x_lag;                      /* FEC + 0x168 */
+        u32 x_retry;                    /* FEC + 0x16C */
+        u32 x_write;                    /* FEC + 0x170 */
+        u32 x_read;                     /* FEC + 0x174 */
+
+        u32 reserved7[2];               /* FEC + 0x178-17C */
+        u32 fm_cntrl;                   /* FEC + 0x180 */
+        u32 rfifo_data;                 /* FEC + 0x184 */
+        u32 rfifo_status;               /* FEC + 0x188 */
+        u32 rfifo_cntrl;                /* FEC + 0x18C */
+        u32 rfifo_lrf_ptr;              /* FEC + 0x190 */
+        u32 rfifo_lwf_ptr;              /* FEC + 0x194 */
+        u32 rfifo_alarm;                /* FEC + 0x198 */
+        u32 rfifo_rdptr;                /* FEC + 0x19C */
+        u32 rfifo_wrptr;                /* FEC + 0x1A0 */
+        u32 tfifo_data;                 /* FEC + 0x1A4 */
+        u32 tfifo_status;               /* FEC + 0x1A8 */
+        u32 tfifo_cntrl;                /* FEC + 0x1AC */
+        u32 tfifo_lrf_ptr;              /* FEC + 0x1B0 */
+        u32 tfifo_lwf_ptr;              /* FEC + 0x1B4 */
+        u32 tfifo_alarm;                /* FEC + 0x1B8 */
+        u32 tfifo_rdptr;                /* FEC + 0x1BC */
+        u32 tfifo_wrptr;                /* FEC + 0x1C0 */
+
+        u32 reset_cntrl;                /* FEC + 0x1C4 */
+        u32 xmit_fsm;                   /* FEC + 0x1C8 */
+
+        u32 reserved8[3];               /* FEC + 0x1CC-1D4 */
+        u32 rdes_data0;                 /* FEC + 0x1D8 */
+        u32 rdes_data1;                 /* FEC + 0x1DC */
+        u32 r_length;                   /* FEC + 0x1E0 */
+        u32 x_length;                   /* FEC + 0x1E4 */
+        u32 x_addr;                     /* FEC + 0x1E8 */
+        u32 cdes_data;                  /* FEC + 0x1EC */
+        u32 status;                     /* FEC + 0x1F0 */
+        u32 dma_control;                /* FEC + 0x1F4 */
+        u32 des_cmnd;                   /* FEC + 0x1F8 */
+        u32 data;                       /* FEC + 0x1FC */
+
+        u32 rmon_t_drop;                /* FEC + 0x200 */
+        u32 rmon_t_packets;             /* FEC + 0x204 */
+        u32 rmon_t_bc_pkt;              /* FEC + 0x208 */
+        u32 rmon_t_mc_pkt;              /* FEC + 0x20C */
+        u32 rmon_t_crc_align;           /* FEC + 0x210 */
+        u32 rmon_t_undersize;           /* FEC + 0x214 */
+        u32 rmon_t_oversize;            /* FEC + 0x218 */
+        u32 rmon_t_frag;                /* FEC + 0x21C */
+        u32 rmon_t_jab;                 /* FEC + 0x220 */
+        u32 rmon_t_col;                 /* FEC + 0x224 */
+        u32 rmon_t_p64;                 /* FEC + 0x228 */
+        u32 rmon_t_p65to127;            /* FEC + 0x22C */
+        u32 rmon_t_p128to255;           /* FEC + 0x230 */
+        u32 rmon_t_p256to511;           /* FEC + 0x234 */
+        u32 rmon_t_p512to1023;          /* FEC + 0x238 */
+        u32 rmon_t_p1024to2047;         /* FEC + 0x23C */
+        u32 rmon_t_p_gte2048;           /* FEC + 0x240 */
+        u32 rmon_t_octets;              /* FEC + 0x244 */
+        u32 ieee_t_drop;                /* FEC + 0x248 */
+        u32 ieee_t_frame_ok;            /* FEC + 0x24C */
+        u32 ieee_t_1col;                /* FEC + 0x250 */
+        u32 ieee_t_mcol;                /* FEC + 0x254 */
+        u32 ieee_t_def;                 /* FEC + 0x258 */
+        u32 ieee_t_lcol;                /* FEC + 0x25C */
+        u32 ieee_t_excol;               /* FEC + 0x260 */
+        u32 ieee_t_macerr;              /* FEC + 0x264 */
+        u32 ieee_t_cserr;               /* FEC + 0x268 */
+        u32 ieee_t_sqe;                 /* FEC + 0x26C */
+        u32 t_fdxfc;                    /* FEC + 0x270 */
+        u32 ieee_t_octets_ok;           /* FEC + 0x274 */
+
+        u32 reserved9[2];               /* FEC + 0x278-27C */
+        u32 rmon_r_drop;                /* FEC + 0x280 */
+        u32 rmon_r_packets;             /* FEC + 0x284 */
+        u32 rmon_r_bc_pkt;              /* FEC + 0x288 */
+        u32 rmon_r_mc_pkt;              /* FEC + 0x28C */
+        u32 rmon_r_crc_align;           /* FEC + 0x290 */
+        u32 rmon_r_undersize;           /* FEC + 0x294 */
+        u32 rmon_r_oversize;            /* FEC + 0x298 */
+        u32 rmon_r_frag;                /* FEC + 0x29C */
+        u32 rmon_r_jab;                 /* FEC + 0x2A0 */
+
+        u32 rmon_r_resvd_0;             /* FEC + 0x2A4 */
+
+        u32 rmon_r_p64;                 /* FEC + 0x2A8 */
+        u32 rmon_r_p65to127;            /* FEC + 0x2AC */
+        u32 rmon_r_p128to255;           /* FEC + 0x2B0 */
+        u32 rmon_r_p256to511;           /* FEC + 0x2B4 */
+        u32 rmon_r_p512to1023;          /* FEC + 0x2B8 */
+        u32 rmon_r_p1024to2047;         /* FEC + 0x2BC */
+        u32 rmon_r_p_gte2048;           /* FEC + 0x2C0 */
+        u32 rmon_r_octets;              /* FEC + 0x2C4 */
+        u32 ieee_r_drop;                /* FEC + 0x2C8 */
+        u32 ieee_r_frame_ok;            /* FEC + 0x2CC */
+        u32 ieee_r_crc;                 /* FEC + 0x2D0 */
+        u32 ieee_r_align;               /* FEC + 0x2D4 */
+        u32 r_macerr;                   /* FEC + 0x2D8 */
+        u32 r_fdxfc;                    /* FEC + 0x2DC */
+        u32 ieee_r_octets_ok;           /* FEC + 0x2E0 */
+
+        u32 reserved10[7];              /* FEC + 0x2E4-2FC */
+
+        u32 reserved11[64];             /* FEC + 0x300-3FF */
+};
+
+#define FEC_MIB_DISABLE                 0x80000000
+
+#define FEC_IEVENT_HBERR                0x80000000
+#define FEC_IEVENT_BABR                 0x40000000
+#define FEC_IEVENT_BABT                 0x20000000
+#define FEC_IEVENT_GRA                  0x10000000
+#define FEC_IEVENT_TFINT                0x08000000
+#define FEC_IEVENT_MII                  0x00800000
+#define FEC_IEVENT_LATE_COL             0x00200000
+#define FEC_IEVENT_COL_RETRY_LIM        0x00100000
+#define FEC_IEVENT_XFIFO_UN             0x00080000
+#define FEC_IEVENT_XFIFO_ERROR          0x00040000
+#define FEC_IEVENT_RFIFO_ERROR          0x00020000
+
+#define FEC_IMASK_HBERR                 0x80000000
+#define FEC_IMASK_BABR                  0x40000000
+#define FEC_IMASK_BABT                  0x20000000
+#define FEC_IMASK_GRA                   0x10000000
+#define FEC_IMASK_MII                   0x00800000
+#define FEC_IMASK_LATE_COL              0x00200000
+#define FEC_IMASK_COL_RETRY_LIM         0x00100000
+#define FEC_IMASK_XFIFO_UN              0x00080000
+#define FEC_IMASK_XFIFO_ERROR           0x00040000
+#define FEC_IMASK_RFIFO_ERROR           0x00020000
+
+/* all but MII, which is enabled separately */
+#define FEC_IMASK_ENABLE        (FEC_IMASK_HBERR | FEC_IMASK_BABR | \
+                FEC_IMASK_BABT | FEC_IMASK_GRA | FEC_IMASK_LATE_COL | \
+                FEC_IMASK_COL_RETRY_LIM | FEC_IMASK_XFIFO_UN | \
+                FEC_IMASK_XFIFO_ERROR | FEC_IMASK_RFIFO_ERROR)
+
+#define FEC_RCNTRL_MAX_FL_SHIFT         16
+#define FEC_RCNTRL_LOOP                 0x01
+#define FEC_RCNTRL_DRT                  0x02
+#define FEC_RCNTRL_MII_MODE             0x04
+#define FEC_RCNTRL_PROM                 0x08
+#define FEC_RCNTRL_BC_REJ               0x10
+#define FEC_RCNTRL_FCE                  0x20
+
+#define FEC_TCNTRL_GTS                  0x00000001
+#define FEC_TCNTRL_HBC                  0x00000002
+#define FEC_TCNTRL_FDEN                 0x00000004
+#define FEC_TCNTRL_TFC_PAUSE            0x00000008
+#define FEC_TCNTRL_RFC_PAUSE            0x00000010
+
+#define FEC_ECNTRL_RESET                0x00000001
+#define FEC_ECNTRL_ETHER_EN             0x00000002
+
+#define FEC_MII_DATA_ST                 0x40000000      /* Start frame */
+#define FEC_MII_DATA_OP_RD              0x20000000      /* Perform read */
+#define FEC_MII_DATA_OP_WR              0x10000000      /* Perform write */
+#define FEC_MII_DATA_PA_MSK             0x0f800000      /* PHY Address mask */
+#define FEC_MII_DATA_RA_MSK             0x007c0000      /* PHY Register mask */
+#define FEC_MII_DATA_TA                 0x00020000      /* Turnaround */
+#define FEC_MII_DATA_DATAMSK            0x0000ffff      /* PHY data mask */
+
+#define FEC_MII_READ_FRAME      (FEC_MII_DATA_ST | FEC_MII_DATA_OP_RD | FEC_MII_DATA_TA)
+#define FEC_MII_WRITE_FRAME     (FEC_MII_DATA_ST | FEC_MII_DATA_OP_WR | FEC_MII_DATA_TA)
+
+#define FEC_MII_DATA_RA_SHIFT           0x12            /* MII reg addr bits */
+#define FEC_MII_DATA_PA_SHIFT           0x17            /* MII PHY addr bits */
+
+#define FEC_PADDR2_TYPE                 0x8808
+
+#define FEC_OP_PAUSE_OPCODE             0x00010000
+
+#define FEC_FIFO_WMRK_256B              0x3
+
+#define FEC_FIFO_STATUS_ERR             0x00400000
+#define FEC_FIFO_STATUS_UF              0x00200000
+#define FEC_FIFO_STATUS_OF              0x00100000
+
+#define FEC_FIFO_CNTRL_FRAME            0x08000000
+#define FEC_FIFO_CNTRL_LTG_7            0x07000000
+
+#define FEC_RESET_CNTRL_RESET_FIFO      0x02000000
+#define FEC_RESET_CNTRL_ENABLE_IS_RESET 0x01000000
+
+#define FEC_XMIT_FSM_APPEND_CRC         0x02000000
+#define FEC_XMIT_FSM_ENABLE_CRC         0x01000000
+
+
+extern struct of_platform_driver mpc52xx_fec_mdio_driver;
+
+#endif  /* __DRIVERS_NET_MPC52XX_FEC_H__ */