2 * Dave DNET Ethernet Controller driver
4 * Copyright (C) 2008 Dave S.r.l. <www.dave.eu>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
13 #define DRV_NAME "dnet"
14 #define DRV_VERSION "0.9.1"
15 #define PFX DRV_NAME ": "
17 /* Register access macros */
18 #define dnet_writel(port, value, reg) \
19 writel((value), (port)->regs + DNET_##reg)
20 #define dnet_readl(port, reg) readl((port)->regs + DNET_##reg)
22 /* ALL DNET FIFO REGISTERS */
23 #define DNET_RX_LEN_FIFO 0x000 /* RX_LEN_FIFO */
24 #define DNET_RX_DATA_FIFO 0x004 /* RX_DATA_FIFO */
25 #define DNET_TX_LEN_FIFO 0x008 /* TX_LEN_FIFO */
26 #define DNET_TX_DATA_FIFO 0x00C /* TX_DATA_FIFO */
28 /* ALL DNET CONTROL/STATUS REGISTERS OFFSETS */
29 #define DNET_VERCAPS 0x100 /* VERCAPS */
30 #define DNET_INTR_SRC 0x104 /* INTR_SRC */
31 #define DNET_INTR_ENB 0x108 /* INTR_ENB */
32 #define DNET_RX_STATUS 0x10C /* RX_STATUS */
33 #define DNET_TX_STATUS 0x110 /* TX_STATUS */
34 #define DNET_RX_FRAMES_CNT 0x114 /* RX_FRAMES_CNT */
35 #define DNET_TX_FRAMES_CNT 0x118 /* TX_FRAMES_CNT */
36 #define DNET_RX_FIFO_TH 0x11C /* RX_FIFO_TH */
37 #define DNET_TX_FIFO_TH 0x120 /* TX_FIFO_TH */
38 #define DNET_SYS_CTL 0x124 /* SYS_CTL */
39 #define DNET_PAUSE_TMR 0x128 /* PAUSE_TMR */
40 #define DNET_RX_FIFO_WCNT 0x12C /* RX_FIFO_WCNT */
41 #define DNET_TX_FIFO_WCNT 0x130 /* TX_FIFO_WCNT */
43 /* ALL DNET MAC REGISTERS */
44 #define DNET_MACREG_DATA 0x200 /* Mac-Reg Data */
45 #define DNET_MACREG_ADDR 0x204 /* Mac-Reg Addr */
47 /* ALL DNET RX STATISTICS COUNTERS */
48 #define DNET_RX_PKT_IGNR_CNT 0x300
49 #define DNET_RX_LEN_CHK_ERR_CNT 0x304
50 #define DNET_RX_LNG_FRM_CNT 0x308
51 #define DNET_RX_SHRT_FRM_CNT 0x30C
52 #define DNET_RX_IPG_VIOL_CNT 0x310
53 #define DNET_RX_CRC_ERR_CNT 0x314
54 #define DNET_RX_OK_PKT_CNT 0x318
55 #define DNET_RX_CTL_FRM_CNT 0x31C
56 #define DNET_RX_PAUSE_FRM_CNT 0x320
57 #define DNET_RX_MULTICAST_CNT 0x324
58 #define DNET_RX_BROADCAST_CNT 0x328
59 #define DNET_RX_VLAN_TAG_CNT 0x32C
60 #define DNET_RX_PRE_SHRINK_CNT 0x330
61 #define DNET_RX_DRIB_NIB_CNT 0x334
62 #define DNET_RX_UNSUP_OPCD_CNT 0x338
63 #define DNET_RX_BYTE_CNT 0x33C
65 /* DNET TX STATISTICS COUNTERS */
66 #define DNET_TX_UNICAST_CNT 0x400
67 #define DNET_TX_PAUSE_FRM_CNT 0x404
68 #define DNET_TX_MULTICAST_CNT 0x408
69 #define DNET_TX_BRDCAST_CNT 0x40C
70 #define DNET_TX_VLAN_TAG_CNT 0x410
71 #define DNET_TX_BAD_FCS_CNT 0x414
72 #define DNET_TX_JUMBO_CNT 0x418
73 #define DNET_TX_BYTE_CNT 0x41C
75 /* SOME INTERNAL MAC-CORE REGISTER */
76 #define DNET_INTERNAL_MODE_REG 0x0
77 #define DNET_INTERNAL_RXTX_CONTROL_REG 0x2
78 #define DNET_INTERNAL_MAX_PKT_SIZE_REG 0x4
79 #define DNET_INTERNAL_IGP_REG 0x8
80 #define DNET_INTERNAL_MAC_ADDR_0_REG 0xa
81 #define DNET_INTERNAL_MAC_ADDR_1_REG 0xc
82 #define DNET_INTERNAL_MAC_ADDR_2_REG 0xe
83 #define DNET_INTERNAL_TX_RX_STS_REG 0x12
84 #define DNET_INTERNAL_GMII_MNG_CTL_REG 0x14
85 #define DNET_INTERNAL_GMII_MNG_DAT_REG 0x16
87 #define DNET_INTERNAL_GMII_MNG_CMD_FIN (1 << 14)
89 #define DNET_INTERNAL_WRITE (1 << 31)
91 /* MAC-CORE REGISTER FIELDS */
93 /* MAC-CORE MODE REGISTER FIELDS */
94 #define DNET_INTERNAL_MODE_GBITEN (1 << 0)
95 #define DNET_INTERNAL_MODE_FCEN (1 << 1)
96 #define DNET_INTERNAL_MODE_RXEN (1 << 2)
97 #define DNET_INTERNAL_MODE_TXEN (1 << 3)
99 /* MAC-CORE RXTX CONTROL REGISTER FIELDS */
100 #define DNET_INTERNAL_RXTX_CONTROL_RXSHORTFRAME (1 << 8)
101 #define DNET_INTERNAL_RXTX_CONTROL_RXBROADCAST (1 << 7)
102 #define DNET_INTERNAL_RXTX_CONTROL_RXMULTICAST (1 << 4)
103 #define DNET_INTERNAL_RXTX_CONTROL_RXPAUSE (1 << 3)
104 #define DNET_INTERNAL_RXTX_CONTROL_DISTXFCS (1 << 2)
105 #define DNET_INTERNAL_RXTX_CONTROL_DISCFXFCS (1 << 1)
106 #define DNET_INTERNAL_RXTX_CONTROL_ENPROMISC (1 << 0)
107 #define DNET_INTERNAL_RXTX_CONTROL_DROPCONTROL (1 << 6)
108 #define DNET_INTERNAL_RXTX_CONTROL_ENABLEHALFDUP (1 << 5)
110 /* SYSTEM CONTROL REGISTER FIELDS */
111 #define DNET_SYS_CTL_IGNORENEXTPKT (1 << 0)
112 #define DNET_SYS_CTL_SENDPAUSE (1 << 2)
113 #define DNET_SYS_CTL_RXFIFOFLUSH (1 << 3)
114 #define DNET_SYS_CTL_TXFIFOFLUSH (1 << 4)
116 /* TX STATUS REGISTER FIELDS */
117 #define DNET_TX_STATUS_FIFO_ALMOST_EMPTY (1 << 2)
118 #define DNET_TX_STATUS_FIFO_ALMOST_FULL (1 << 1)
120 /* INTERRUPT SOURCE REGISTER FIELDS */
121 #define DNET_INTR_SRC_TX_PKTSENT (1 << 0)
122 #define DNET_INTR_SRC_TX_FIFOAF (1 << 1)
123 #define DNET_INTR_SRC_TX_FIFOAE (1 << 2)
124 #define DNET_INTR_SRC_TX_DISCFRM (1 << 3)
125 #define DNET_INTR_SRC_TX_FIFOFULL (1 << 4)
126 #define DNET_INTR_SRC_RX_CMDFIFOAF (1 << 8)
127 #define DNET_INTR_SRC_RX_CMDFIFOFF (1 << 9)
128 #define DNET_INTR_SRC_RX_DATAFIFOFF (1 << 10)
129 #define DNET_INTR_SRC_TX_SUMMARY (1 << 16)
130 #define DNET_INTR_SRC_RX_SUMMARY (1 << 17)
131 #define DNET_INTR_SRC_PHY (1 << 19)
133 /* INTERRUPT ENABLE REGISTER FIELDS */
134 #define DNET_INTR_ENB_TX_PKTSENT (1 << 0)
135 #define DNET_INTR_ENB_TX_FIFOAF (1 << 1)
136 #define DNET_INTR_ENB_TX_FIFOAE (1 << 2)
137 #define DNET_INTR_ENB_TX_DISCFRM (1 << 3)
138 #define DNET_INTR_ENB_TX_FIFOFULL (1 << 4)
139 #define DNET_INTR_ENB_RX_PKTRDY (1 << 8)
140 #define DNET_INTR_ENB_RX_FIFOAF (1 << 9)
141 #define DNET_INTR_ENB_RX_FIFOERR (1 << 10)
142 #define DNET_INTR_ENB_RX_ERROR (1 << 11)
143 #define DNET_INTR_ENB_RX_FIFOFULL (1 << 12)
144 #define DNET_INTR_ENB_RX_FIFOAE (1 << 13)
145 #define DNET_INTR_ENB_TX_SUMMARY (1 << 16)
146 #define DNET_INTR_ENB_RX_SUMMARY (1 << 17)
147 #define DNET_INTR_ENB_GLOBAL_ENABLE (1 << 18)
150 * almost empty = less than one full sized ethernet frame (no jumbo) inside
151 * the fifo almost full = can write less than one full sized ethernet frame
152 * (no jumbo) inside the fifo
154 #define DNET_CFG_TX_FIFO_FULL_THRES 25
155 #define DNET_CFG_RX_FIFO_FULL_THRES 20
158 * Capabilities. Used by the driver to know the capabilities that the ethernet
159 * controller inside the FPGA have.
162 #define DNET_HAS_MDIO (1 << 0)
163 #define DNET_HAS_IRQ (1 << 1)
164 #define DNET_HAS_GIGABIT (1 << 2)
165 #define DNET_HAS_DMA (1 << 3)
167 #define DNET_HAS_MII (1 << 4) /* or GMII */
168 #define DNET_HAS_RMII (1 << 5) /* or RGMII */
170 #define DNET_CAPS_MASK 0xFFFF
172 #define DNET_FIFO_SIZE 1024 /* 1K x 32 bit */
173 #define DNET_FIFO_TX_DATA_AF_TH (DNET_FIFO_SIZE - 384) /* 384 = 1536 / 4 */
174 #define DNET_FIFO_TX_DATA_AE_TH 384
176 #define DNET_FIFO_RX_CMD_AF_TH (1 << 16) /* just one frame inside the FIFO */
179 * Hardware-collected statistics.
211 struct platform_device *pdev;
212 struct net_device *dev;
213 struct dnet_stats hw_stats;
214 unsigned int capabilities; /* read from FPGA */
215 struct napi_struct napi;
218 struct mii_bus *mii_bus;
219 struct phy_device *phy_dev;