| 1 | /* |
| 2 | * This program is free software; you can redistribute it and/or modify |
| 3 | * it under the terms of the GNU General Public License as published by |
| 4 | * the Free Software Foundation; version 2 of the License |
| 5 | * |
| 6 | * This program is distributed in the hope that it will be useful, |
| 7 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 8 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 9 | * GNU General Public License for more details. |
| 10 | * |
| 11 | * You should have received a copy of the GNU General Public License |
| 12 | * along with this program; if not, write to the Free Software |
| 13 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. |
| 14 | * |
| 15 | * based on Ralink SDK3.3 |
| 16 | * Copyright (C) 2009 John Crispin <blogic@openwrt.org> |
| 17 | */ |
| 18 | |
| 19 | #ifndef RAMIPS_ETH_H |
| 20 | #define RAMIPS_ETH_H |
| 21 | |
| 22 | #include <linux/mii.h> |
| 23 | #include <linux/interrupt.h> |
| 24 | #include <linux/netdevice.h> |
| 25 | #include <linux/dma-mapping.h> |
| 26 | |
| 27 | #define NUM_RX_DESC 256 |
| 28 | #define NUM_TX_DESC 256 |
| 29 | |
| 30 | #define RAMIPS_DELAY_EN_INT 0x80 |
| 31 | #define RAMIPS_DELAY_MAX_INT 0x04 |
| 32 | #define RAMIPS_DELAY_MAX_TOUT 0x04 |
| 33 | #define RAMIPS_DELAY_CHAN (((RAMIPS_DELAY_EN_INT | RAMIPS_DELAY_MAX_INT) << 8) | RAMIPS_DELAY_MAX_TOUT) |
| 34 | #define RAMIPS_DELAY_INIT ((RAMIPS_DELAY_CHAN << 16) | RAMIPS_DELAY_CHAN) |
| 35 | #define RAMIPS_PSE_FQFC_CFG_INIT 0x80504000 |
| 36 | |
| 37 | /* interrupt bits */ |
| 38 | #define RAMIPS_CNT_PPE_AF BIT(31) |
| 39 | #define RAMIPS_CNT_GDM_AF BIT(29) |
| 40 | #define RAMIPS_PSE_P2_FC BIT(26) |
| 41 | #define RAMIPS_PSE_BUF_DROP BIT(24) |
| 42 | #define RAMIPS_GDM_OTHER_DROP BIT(23) |
| 43 | #define RAMIPS_PSE_P1_FC BIT(22) |
| 44 | #define RAMIPS_PSE_P0_FC BIT(21) |
| 45 | #define RAMIPS_PSE_FQ_EMPTY BIT(20) |
| 46 | #define RAMIPS_GE1_STA_CHG BIT(18) |
| 47 | #define RAMIPS_TX_COHERENT BIT(17) |
| 48 | #define RAMIPS_RX_COHERENT BIT(16) |
| 49 | #define RAMIPS_TX_DONE_INT3 BIT(11) |
| 50 | #define RAMIPS_TX_DONE_INT2 BIT(10) |
| 51 | #define RAMIPS_TX_DONE_INT1 BIT(9) |
| 52 | #define RAMIPS_TX_DONE_INT0 BIT(8) |
| 53 | #define RAMIPS_RX_DONE_INT0 BIT(2) |
| 54 | #define RAMIPS_TX_DLY_INT BIT(1) |
| 55 | #define RAMIPS_RX_DLY_INT BIT(0) |
| 56 | |
| 57 | /* registers */ |
| 58 | #define RAMIPS_FE_OFFSET 0x0000 |
| 59 | #define RAMIPS_GDMA_OFFSET 0x0020 |
| 60 | #define RAMIPS_PSE_OFFSET 0x0040 |
| 61 | #define RAMIPS_GDMA2_OFFSET 0x0060 |
| 62 | #define RAMIPS_CDMA_OFFSET 0x0080 |
| 63 | #define RAMIPS_PDMA_OFFSET 0x0100 |
| 64 | #define RAMIPS_PPE_OFFSET 0x0200 |
| 65 | #define RAMIPS_CMTABLE_OFFSET 0x0400 |
| 66 | #define RAMIPS_POLICYTABLE_OFFSET 0x1000 |
| 67 | |
| 68 | #define RAMIPS_MDIO_ACCESS (RAMIPS_FE_OFFSET + 0x00) |
| 69 | #define RAMIPS_MDIO_CFG (RAMIPS_FE_OFFSET + 0x04) |
| 70 | #define RAMIPS_FE_GLO_CFG (RAMIPS_FE_OFFSET + 0x08) |
| 71 | #define RAMIPS_FE_RST_GL (RAMIPS_FE_OFFSET + 0x0C) |
| 72 | #define RAMIPS_FE_INT_STATUS (RAMIPS_FE_OFFSET + 0x10) |
| 73 | #define RAMIPS_FE_INT_ENABLE (RAMIPS_FE_OFFSET + 0x14) |
| 74 | #define RAMIPS_MDIO_CFG2 (RAMIPS_FE_OFFSET + 0x18) |
| 75 | #define RAMIPS_FOC_TS_T (RAMIPS_FE_OFFSET + 0x1C) |
| 76 | |
| 77 | #define RAMIPS_GDMA1_FWD_CFG (RAMIPS_GDMA_OFFSET + 0x00) |
| 78 | #define RAMIPS_GDMA1_SCH_CFG (RAMIPS_GDMA_OFFSET + 0x04) |
| 79 | #define RAMIPS_GDMA1_SHPR_CFG (RAMIPS_GDMA_OFFSET + 0x08) |
| 80 | #define RAMIPS_GDMA1_MAC_ADRL (RAMIPS_GDMA_OFFSET + 0x0C) |
| 81 | #define RAMIPS_GDMA1_MAC_ADRH (RAMIPS_GDMA_OFFSET + 0x10) |
| 82 | |
| 83 | #define RAMIPS_GDMA2_FWD_CFG (RAMIPS_GDMA2_OFFSET + 0x00) |
| 84 | #define RAMIPS_GDMA2_SCH_CFG (RAMIPS_GDMA2_OFFSET + 0x04) |
| 85 | #define RAMIPS_GDMA2_SHPR_CFG (RAMIPS_GDMA2_OFFSET + 0x08) |
| 86 | #define RAMIPS_GDMA2_MAC_ADRL (RAMIPS_GDMA2_OFFSET + 0x0C) |
| 87 | #define RAMIPS_GDMA2_MAC_ADRH (RAMIPS_GDMA2_OFFSET + 0x10) |
| 88 | |
| 89 | #define RAMIPS_PSE_FQ_CFG (RAMIPS_PSE_OFFSET + 0x00) |
| 90 | #define RAMIPS_CDMA_FC_CFG (RAMIPS_PSE_OFFSET + 0x04) |
| 91 | #define RAMIPS_GDMA1_FC_CFG (RAMIPS_PSE_OFFSET + 0x08) |
| 92 | #define RAMIPS_GDMA2_FC_CFG (RAMIPS_PSE_OFFSET + 0x0C) |
| 93 | |
| 94 | #define RAMIPS_CDMA_CSG_CFG (RAMIPS_CDMA_OFFSET + 0x00) |
| 95 | #define RAMIPS_CDMA_SCH_CFG (RAMIPS_CDMA_OFFSET + 0x04) |
| 96 | |
| 97 | #define RAMIPS_PDMA_GLO_CFG (RAMIPS_PDMA_OFFSET + 0x00) |
| 98 | #define RAMIPS_PDMA_RST_CFG (RAMIPS_PDMA_OFFSET + 0x04) |
| 99 | #define RAMIPS_PDMA_SCH_CFG (RAMIPS_PDMA_OFFSET + 0x08) |
| 100 | #define RAMIPS_DLY_INT_CFG (RAMIPS_PDMA_OFFSET + 0x0C) |
| 101 | #define RAMIPS_TX_BASE_PTR0 (RAMIPS_PDMA_OFFSET + 0x10) |
| 102 | #define RAMIPS_TX_MAX_CNT0 (RAMIPS_PDMA_OFFSET + 0x14) |
| 103 | #define RAMIPS_TX_CTX_IDX0 (RAMIPS_PDMA_OFFSET + 0x18) |
| 104 | #define RAMIPS_TX_DTX_IDX0 (RAMIPS_PDMA_OFFSET + 0x1C) |
| 105 | #define RAMIPS_TX_BASE_PTR1 (RAMIPS_PDMA_OFFSET + 0x20) |
| 106 | #define RAMIPS_TX_MAX_CNT1 (RAMIPS_PDMA_OFFSET + 0x24) |
| 107 | #define RAMIPS_TX_CTX_IDX1 (RAMIPS_PDMA_OFFSET + 0x28) |
| 108 | #define RAMIPS_TX_DTX_IDX1 (RAMIPS_PDMA_OFFSET + 0x2C) |
| 109 | #define RAMIPS_RX_BASE_PTR0 (RAMIPS_PDMA_OFFSET + 0x30) |
| 110 | #define RAMIPS_RX_MAX_CNT0 (RAMIPS_PDMA_OFFSET + 0x34) |
| 111 | #define RAMIPS_RX_CALC_IDX0 (RAMIPS_PDMA_OFFSET + 0x38) |
| 112 | #define RAMIPS_RX_DRX_IDX0 (RAMIPS_PDMA_OFFSET + 0x3C) |
| 113 | #define RAMIPS_TX_BASE_PTR2 (RAMIPS_PDMA_OFFSET + 0x40) |
| 114 | #define RAMIPS_TX_MAX_CNT2 (RAMIPS_PDMA_OFFSET + 0x44) |
| 115 | #define RAMIPS_TX_CTX_IDX2 (RAMIPS_PDMA_OFFSET + 0x48) |
| 116 | #define RAMIPS_TX_DTX_IDX2 (RAMIPS_PDMA_OFFSET + 0x4C) |
| 117 | #define RAMIPS_TX_BASE_PTR3 (RAMIPS_PDMA_OFFSET + 0x50) |
| 118 | #define RAMIPS_TX_MAX_CNT3 (RAMIPS_PDMA_OFFSET + 0x54) |
| 119 | #define RAMIPS_TX_CTX_IDX3 (RAMIPS_PDMA_OFFSET + 0x58) |
| 120 | #define RAMIPS_TX_DTX_IDX3 (RAMIPS_PDMA_OFFSET + 0x5C) |
| 121 | #define RAMIPS_RX_BASE_PTR1 (RAMIPS_PDMA_OFFSET + 0x60) |
| 122 | #define RAMIPS_RX_MAX_CNT1 (RAMIPS_PDMA_OFFSET + 0x64) |
| 123 | #define RAMIPS_RX_CALC_IDX1 (RAMIPS_PDMA_OFFSET + 0x68) |
| 124 | #define RAMIPS_RX_DRX_IDX1 (RAMIPS_PDMA_OFFSET + 0x6C) |
| 125 | |
| 126 | /* MDIO_CFG register bits */ |
| 127 | #define RAMIPS_MDIO_CFG_AUTO_POLL_EN BIT(29) |
| 128 | #define RAMIPS_MDIO_CFG_GP1_BP_EN BIT(16) |
| 129 | #define RAMIPS_MDIO_CFG_GP1_FRC_EN BIT(15) |
| 130 | #define RAMIPS_MDIO_CFG_GP1_SPEED_10 (0 << 13) |
| 131 | #define RAMIPS_MDIO_CFG_GP1_SPEED_100 (1 << 13) |
| 132 | #define RAMIPS_MDIO_CFG_GP1_SPEED_1000 (2 << 13) |
| 133 | #define RAMIPS_MDIO_CFG_GP1_DUPLEX BIT(12) |
| 134 | #define RAMIPS_MDIO_CFG_GP1_FC_TX BIT(11) |
| 135 | #define RAMIPS_MDIO_CFG_GP1_FC_RX BIT(10) |
| 136 | #define RAMIPS_MDIO_CFG_GP1_LNK_DWN BIT(9) |
| 137 | #define RAMIPS_MDIO_CFG_GP1_AN_FAIL BIT(8) |
| 138 | #define RAMIPS_MDIO_CFG_MDC_CLK_DIV_1 (0 << 6) |
| 139 | #define RAMIPS_MDIO_CFG_MDC_CLK_DIV_2 (1 << 6) |
| 140 | #define RAMIPS_MDIO_CFG_MDC_CLK_DIV_4 (2 << 6) |
| 141 | #define RAMIPS_MDIO_CFG_MDC_CLK_DIV_8 (3 << 6) |
| 142 | #define RAMIPS_MDIO_CFG_TURBO_MII_FREQ BIT(5) |
| 143 | #define RAMIPS_MDIO_CFG_TURBO_MII_MODE BIT(4) |
| 144 | #define RAMIPS_MDIO_CFG_RX_CLK_SKEW_0 (0 << 2) |
| 145 | #define RAMIPS_MDIO_CFG_RX_CLK_SKEW_200 (1 << 2) |
| 146 | #define RAMIPS_MDIO_CFG_RX_CLK_SKEW_400 (2 << 2) |
| 147 | #define RAMIPS_MDIO_CFG_RX_CLK_SKEW_INV (3 << 2) |
| 148 | #define RAMIPS_MDIO_CFG_TX_CLK_SKEW_0 0 |
| 149 | #define RAMIPS_MDIO_CFG_TX_CLK_SKEW_200 1 |
| 150 | #define RAMIPS_MDIO_CFG_TX_CLK_SKEW_400 2 |
| 151 | #define RAMIPS_MDIO_CFG_TX_CLK_SKEW_INV 3 |
| 152 | |
| 153 | /* uni-cast port */ |
| 154 | #define RAMIPS_GDM1_ICS_EN BIT(22) |
| 155 | #define RAMIPS_GDM1_TCS_EN BIT(21) |
| 156 | #define RAMIPS_GDM1_UCS_EN BIT(20) |
| 157 | #define RAMIPS_GDM1_JMB_EN BIT(19) |
| 158 | #define RAMIPS_GDM1_STRPCRC BIT(16) |
| 159 | #define RAMIPS_GDM1_UFRC_P_CPU (0 << 12) |
| 160 | #define RAMIPS_GDM1_UFRC_P_GDMA1 (1 << 12) |
| 161 | #define RAMIPS_GDM1_UFRC_P_PPE (6 << 12) |
| 162 | |
| 163 | /* checksums */ |
| 164 | #define RAMIPS_ICS_GEN_EN BIT(2) |
| 165 | #define RAMIPS_UCS_GEN_EN BIT(1) |
| 166 | #define RAMIPS_TCS_GEN_EN BIT(0) |
| 167 | |
| 168 | /* dma ring */ |
| 169 | #define RAMIPS_PST_DRX_IDX0 BIT(16) |
| 170 | #define RAMIPS_PST_DTX_IDX3 BIT(3) |
| 171 | #define RAMIPS_PST_DTX_IDX2 BIT(2) |
| 172 | #define RAMIPS_PST_DTX_IDX1 BIT(1) |
| 173 | #define RAMIPS_PST_DTX_IDX0 BIT(0) |
| 174 | |
| 175 | #define RAMIPS_TX_WB_DDONE BIT(6) |
| 176 | #define RAMIPS_RX_DMA_BUSY BIT(3) |
| 177 | #define RAMIPS_TX_DMA_BUSY BIT(1) |
| 178 | #define RAMIPS_RX_DMA_EN BIT(2) |
| 179 | #define RAMIPS_TX_DMA_EN BIT(0) |
| 180 | |
| 181 | #define RAMIPS_PDMA_SIZE_4DWORDS (0 << 4) |
| 182 | #define RAMIPS_PDMA_SIZE_8DWORDS (1 << 4) |
| 183 | #define RAMIPS_PDMA_SIZE_16DWORDS (2 << 4) |
| 184 | |
| 185 | #define RAMIPS_US_CYC_CNT_MASK 0xff |
| 186 | #define RAMIPS_US_CYC_CNT_SHIFT 0x8 |
| 187 | #define RAMIPS_US_CYC_CNT_DIVISOR 1000000 |
| 188 | |
| 189 | #define RX_DMA_PLEN0(_x) (((_x) >> 16) & 0x3fff) |
| 190 | #define RX_DMA_LSO BIT(30) |
| 191 | #define RX_DMA_DONE BIT(31) |
| 192 | |
| 193 | struct ramips_rx_dma { |
| 194 | unsigned int rxd1; |
| 195 | unsigned int rxd2; |
| 196 | unsigned int rxd3; |
| 197 | unsigned int rxd4; |
| 198 | } __packed __aligned(4); |
| 199 | |
| 200 | #define TX_DMA_PLEN0_MASK ((0x3fff) << 16) |
| 201 | #define TX_DMA_PLEN0(_x) (((_x) & 0x3fff) << 16) |
| 202 | #define TX_DMA_LSO BIT(30) |
| 203 | #define TX_DMA_DONE BIT(31) |
| 204 | #define TX_DMA_QN(_x) ((_x) << 16) |
| 205 | #define TX_DMA_PN(_x) ((_x) << 24) |
| 206 | #define TX_DMA_QN_MASK TX_DMA_QN(0x7) |
| 207 | #define TX_DMA_PN_MASK TX_DMA_PN(0x7) |
| 208 | |
| 209 | struct ramips_tx_dma { |
| 210 | unsigned int txd1; |
| 211 | unsigned int txd2; |
| 212 | unsigned int txd3; |
| 213 | unsigned int txd4; |
| 214 | } __packed __aligned(4); |
| 215 | |
| 216 | struct raeth_tx_info { |
| 217 | struct ramips_tx_dma *tx_desc; |
| 218 | struct sk_buff *tx_skb; |
| 219 | }; |
| 220 | |
| 221 | struct raeth_rx_info { |
| 222 | struct ramips_rx_dma *rx_desc; |
| 223 | struct sk_buff *rx_skb; |
| 224 | dma_addr_t rx_dma; |
| 225 | unsigned int pad; |
| 226 | }; |
| 227 | |
| 228 | struct raeth_int_stats { |
| 229 | unsigned long rx_delayed; |
| 230 | unsigned long tx_delayed; |
| 231 | unsigned long rx_done0; |
| 232 | unsigned long tx_done0; |
| 233 | unsigned long tx_done1; |
| 234 | unsigned long tx_done2; |
| 235 | unsigned long tx_done3; |
| 236 | unsigned long rx_coherent; |
| 237 | unsigned long tx_coherent; |
| 238 | |
| 239 | unsigned long pse_fq_empty; |
| 240 | unsigned long pse_p0_fc; |
| 241 | unsigned long pse_p1_fc; |
| 242 | unsigned long pse_p2_fc; |
| 243 | unsigned long pse_buf_drop; |
| 244 | |
| 245 | unsigned long total; |
| 246 | }; |
| 247 | |
| 248 | struct raeth_debug { |
| 249 | struct dentry *debugfs_dir; |
| 250 | |
| 251 | struct raeth_int_stats int_stats; |
| 252 | }; |
| 253 | |
| 254 | struct raeth_priv |
| 255 | { |
| 256 | struct raeth_rx_info *rx_info; |
| 257 | dma_addr_t rx_desc_dma; |
| 258 | struct tasklet_struct rx_tasklet; |
| 259 | struct ramips_rx_dma *rx; |
| 260 | |
| 261 | struct raeth_tx_info *tx_info; |
| 262 | dma_addr_t tx_desc_dma; |
| 263 | struct tasklet_struct tx_housekeeping_tasklet; |
| 264 | struct ramips_tx_dma *tx; |
| 265 | |
| 266 | unsigned int skb_free_idx; |
| 267 | |
| 268 | spinlock_t page_lock; |
| 269 | struct net_device *netdev; |
| 270 | struct device *parent; |
| 271 | struct ramips_eth_platform_data *plat; |
| 272 | |
| 273 | int link; |
| 274 | int speed; |
| 275 | int duplex; |
| 276 | int tx_fc; |
| 277 | int rx_fc; |
| 278 | |
| 279 | struct mii_bus *mii_bus; |
| 280 | int mii_irq[PHY_MAX_ADDR]; |
| 281 | struct phy_device *phy_dev; |
| 282 | spinlock_t phy_lock; |
| 283 | |
| 284 | #ifdef CONFIG_NET_RAMIPS_DEBUG_FS |
| 285 | struct raeth_debug debug; |
| 286 | #endif |
| 287 | }; |
| 288 | |
| 289 | #ifdef CONFIG_NET_RAMIPS_DEBUG_FS |
| 290 | int raeth_debugfs_root_init(void); |
| 291 | void raeth_debugfs_root_exit(void); |
| 292 | int raeth_debugfs_init(struct raeth_priv *re); |
| 293 | void raeth_debugfs_exit(struct raeth_priv *re); |
| 294 | void raeth_debugfs_update_int_stats(struct raeth_priv *re, u32 status); |
| 295 | #else |
| 296 | static inline int raeth_debugfs_root_init(void) { return 0; } |
| 297 | static inline void raeth_debugfs_root_exit(void) {} |
| 298 | static inline int raeth_debugfs_init(struct raeth_priv *re) { return 0; } |
| 299 | static inline void raeth_debugfs_exit(struct raeth_priv *re) {} |
| 300 | static inline void raeth_debugfs_update_int_stats(struct raeth_priv *re, |
| 301 | u32 status) {} |
| 302 | #endif /* CONFIG_NET_RAMIPS_DEBUG_FS */ |
| 303 | |
| 304 | #endif /* RAMIPS_ETH_H */ |
| 305 | |
