1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef BCM63XX_ENET_H_ 3 #define BCM63XX_ENET_H_ 4 5 #include <linux/types.h> 6 #include <linux/mii.h> 7 #include <linux/mutex.h> 8 #include <linux/phy.h> 9 #include <linux/platform_device.h> 10 11 #include <bcm63xx_regs.h> 12 #include <bcm63xx_io.h> 13 #include <bcm63xx_iudma.h> 14 15 /* default number of descriptor */ 16 #define BCMENET_DEF_RX_DESC 64 17 #define BCMENET_DEF_TX_DESC 32 18 19 /* maximum burst len for dma (4 bytes unit) */ 20 #define BCMENET_DMA_MAXBURST 16 21 #define BCMENETSW_DMA_MAXBURST 8 22 23 /* tx transmit threshold (4 bytes unit), fifo is 256 bytes, the value 24 * must be low enough so that a DMA transfer of above burst length can 25 * not overflow the fifo */ 26 #define BCMENET_TX_FIFO_TRESH 32 27 28 /* 29 * hardware maximum rx/tx packet size including FCS, max mtu is 30 * actually 2047, but if we set max rx size register to 2047 we won't 31 * get overflow information if packet size is 2048 or above 32 */ 33 #define BCMENET_MAX_MTU 2046 34 35 /* 36 * MIB Counters register definitions 37 */ 38 #define ETH_MIB_TX_GD_OCTETS 0 39 #define ETH_MIB_TX_GD_PKTS 1 40 #define ETH_MIB_TX_ALL_OCTETS 2 41 #define ETH_MIB_TX_ALL_PKTS 3 42 #define ETH_MIB_TX_BRDCAST 4 43 #define ETH_MIB_TX_MULT 5 44 #define ETH_MIB_TX_64 6 45 #define ETH_MIB_TX_65_127 7 46 #define ETH_MIB_TX_128_255 8 47 #define ETH_MIB_TX_256_511 9 48 #define ETH_MIB_TX_512_1023 10 49 #define ETH_MIB_TX_1024_MAX 11 50 #define ETH_MIB_TX_JAB 12 51 #define ETH_MIB_TX_OVR 13 52 #define ETH_MIB_TX_FRAG 14 53 #define ETH_MIB_TX_UNDERRUN 15 54 #define ETH_MIB_TX_COL 16 55 #define ETH_MIB_TX_1_COL 17 56 #define ETH_MIB_TX_M_COL 18 57 #define ETH_MIB_TX_EX_COL 19 58 #define ETH_MIB_TX_LATE 20 59 #define ETH_MIB_TX_DEF 21 60 #define ETH_MIB_TX_CRS 22 61 #define ETH_MIB_TX_PAUSE 23 62 63 #define ETH_MIB_RX_GD_OCTETS 32 64 #define ETH_MIB_RX_GD_PKTS 33 65 #define ETH_MIB_RX_ALL_OCTETS 34 66 #define ETH_MIB_RX_ALL_PKTS 35 67 #define ETH_MIB_RX_BRDCAST 36 68 #define ETH_MIB_RX_MULT 37 69 #define ETH_MIB_RX_64 38 70 #define ETH_MIB_RX_65_127 39 71 #define ETH_MIB_RX_128_255 40 72 #define ETH_MIB_RX_256_511 41 73 #define ETH_MIB_RX_512_1023 42 74 #define ETH_MIB_RX_1024_MAX 43 75 #define ETH_MIB_RX_JAB 44 76 #define ETH_MIB_RX_OVR 45 77 #define ETH_MIB_RX_FRAG 46 78 #define ETH_MIB_RX_DROP 47 79 #define ETH_MIB_RX_CRC_ALIGN 48 80 #define ETH_MIB_RX_UND 49 81 #define ETH_MIB_RX_CRC 50 82 #define ETH_MIB_RX_ALIGN 51 83 #define ETH_MIB_RX_SYM 52 84 #define ETH_MIB_RX_PAUSE 53 85 #define ETH_MIB_RX_CNTRL 54 86 87 88 /* 89 * SW MIB Counters register definitions 90 */ 91 #define ETHSW_MIB_TX_ALL_OCT 0 92 #define ETHSW_MIB_TX_DROP_PKTS 2 93 #define ETHSW_MIB_TX_QOS_PKTS 3 94 #define ETHSW_MIB_TX_BRDCAST 4 95 #define ETHSW_MIB_TX_MULT 5 96 #define ETHSW_MIB_TX_UNI 6 97 #define ETHSW_MIB_TX_COL 7 98 #define ETHSW_MIB_TX_1_COL 8 99 #define ETHSW_MIB_TX_M_COL 9 100 #define ETHSW_MIB_TX_DEF 10 101 #define ETHSW_MIB_TX_LATE 11 102 #define ETHSW_MIB_TX_EX_COL 12 103 #define ETHSW_MIB_TX_PAUSE 14 104 #define ETHSW_MIB_TX_QOS_OCT 15 105 106 #define ETHSW_MIB_RX_ALL_OCT 17 107 #define ETHSW_MIB_RX_UND 19 108 #define ETHSW_MIB_RX_PAUSE 20 109 #define ETHSW_MIB_RX_64 21 110 #define ETHSW_MIB_RX_65_127 22 111 #define ETHSW_MIB_RX_128_255 23 112 #define ETHSW_MIB_RX_256_511 24 113 #define ETHSW_MIB_RX_512_1023 25 114 #define ETHSW_MIB_RX_1024_1522 26 115 #define ETHSW_MIB_RX_OVR 27 116 #define ETHSW_MIB_RX_JAB 28 117 #define ETHSW_MIB_RX_ALIGN 29 118 #define ETHSW_MIB_RX_CRC 30 119 #define ETHSW_MIB_RX_GD_OCT 31 120 #define ETHSW_MIB_RX_DROP 33 121 #define ETHSW_MIB_RX_UNI 34 122 #define ETHSW_MIB_RX_MULT 35 123 #define ETHSW_MIB_RX_BRDCAST 36 124 #define ETHSW_MIB_RX_SA_CHANGE 37 125 #define ETHSW_MIB_RX_FRAG 38 126 #define ETHSW_MIB_RX_OVR_DISC 39 127 #define ETHSW_MIB_RX_SYM 40 128 #define ETHSW_MIB_RX_QOS_PKTS 41 129 #define ETHSW_MIB_RX_QOS_OCT 42 130 #define ETHSW_MIB_RX_1523_2047 44 131 #define ETHSW_MIB_RX_2048_4095 45 132 #define ETHSW_MIB_RX_4096_8191 46 133 #define ETHSW_MIB_RX_8192_9728 47 134 135 136 struct bcm_enet_mib_counters { 137 u64 tx_gd_octets; 138 u32 tx_gd_pkts; 139 u32 tx_all_octets; 140 u32 tx_all_pkts; 141 u32 tx_unicast; 142 u32 tx_brdcast; 143 u32 tx_mult; 144 u32 tx_64; 145 u32 tx_65_127; 146 u32 tx_128_255; 147 u32 tx_256_511; 148 u32 tx_512_1023; 149 u32 tx_1024_max; 150 u32 tx_1523_2047; 151 u32 tx_2048_4095; 152 u32 tx_4096_8191; 153 u32 tx_8192_9728; 154 u32 tx_jab; 155 u32 tx_drop; 156 u32 tx_ovr; 157 u32 tx_frag; 158 u32 tx_underrun; 159 u32 tx_col; 160 u32 tx_1_col; 161 u32 tx_m_col; 162 u32 tx_ex_col; 163 u32 tx_late; 164 u32 tx_def; 165 u32 tx_crs; 166 u32 tx_pause; 167 u64 rx_gd_octets; 168 u32 rx_gd_pkts; 169 u32 rx_all_octets; 170 u32 rx_all_pkts; 171 u32 rx_brdcast; 172 u32 rx_unicast; 173 u32 rx_mult; 174 u32 rx_64; 175 u32 rx_65_127; 176 u32 rx_128_255; 177 u32 rx_256_511; 178 u32 rx_512_1023; 179 u32 rx_1024_max; 180 u32 rx_jab; 181 u32 rx_ovr; 182 u32 rx_frag; 183 u32 rx_drop; 184 u32 rx_crc_align; 185 u32 rx_und; 186 u32 rx_crc; 187 u32 rx_align; 188 u32 rx_sym; 189 u32 rx_pause; 190 u32 rx_cntrl; 191 }; 192 193 194 struct bcm_enet_priv { 195 196 /* base remapped address of device */ 197 void __iomem *base; 198 199 /* mac irq, rx_dma irq, tx_dma irq */ 200 int irq; 201 int irq_rx; 202 int irq_tx; 203 204 /* hw view of rx & tx dma ring */ 205 dma_addr_t rx_desc_dma; 206 dma_addr_t tx_desc_dma; 207 208 /* allocated size (in bytes) for rx & tx dma ring */ 209 unsigned int rx_desc_alloc_size; 210 unsigned int tx_desc_alloc_size; 211 212 213 struct napi_struct napi; 214 215 /* dma channel id for rx */ 216 int rx_chan; 217 218 /* number of dma desc in rx ring */ 219 int rx_ring_size; 220 221 /* cpu view of rx dma ring */ 222 struct bcm_enet_desc *rx_desc_cpu; 223 224 /* current number of armed descriptor given to hardware for rx */ 225 int rx_desc_count; 226 227 /* next rx descriptor to fetch from hardware */ 228 int rx_curr_desc; 229 230 /* next dirty rx descriptor to refill */ 231 int rx_dirty_desc; 232 233 /* size of allocated rx buffers */ 234 unsigned int rx_buf_size; 235 236 /* allocated rx buffer offset */ 237 unsigned int rx_buf_offset; 238 239 /* size of allocated rx frag */ 240 unsigned int rx_frag_size; 241 242 /* list of buffer given to hw for rx */ 243 void **rx_buf; 244 245 /* used when rx skb allocation failed, so we defer rx queue 246 * refill */ 247 struct timer_list rx_timeout; 248 249 /* lock rx_timeout against rx normal operation */ 250 spinlock_t rx_lock; 251 252 253 /* dma channel id for tx */ 254 int tx_chan; 255 256 /* number of dma desc in tx ring */ 257 int tx_ring_size; 258 259 /* maximum dma burst size */ 260 int dma_maxburst; 261 262 /* cpu view of rx dma ring */ 263 struct bcm_enet_desc *tx_desc_cpu; 264 265 /* number of available descriptor for tx */ 266 int tx_desc_count; 267 268 /* next tx descriptor avaiable */ 269 int tx_curr_desc; 270 271 /* next dirty tx descriptor to reclaim */ 272 int tx_dirty_desc; 273 274 /* list of skb given to hw for tx */ 275 struct sk_buff **tx_skb; 276 277 /* lock used by tx reclaim and xmit */ 278 spinlock_t tx_lock; 279 280 281 /* set if internal phy is ignored and external mii interface 282 * is selected */ 283 int use_external_mii; 284 285 /* set if a phy is connected, phy address must be known, 286 * probing is not possible */ 287 int has_phy; 288 int phy_id; 289 290 /* set if connected phy has an associated irq */ 291 int has_phy_interrupt; 292 int phy_interrupt; 293 294 /* used when a phy is connected (phylib used) */ 295 struct mii_bus *mii_bus; 296 int old_link; 297 int old_duplex; 298 int old_pause; 299 300 /* used when no phy is connected */ 301 int force_speed_100; 302 int force_duplex_full; 303 304 /* pause parameters */ 305 int pause_auto; 306 int pause_rx; 307 int pause_tx; 308 309 /* stats */ 310 struct bcm_enet_mib_counters mib; 311 312 /* after mib interrupt, mib registers update is done in this 313 * work queue */ 314 struct work_struct mib_update_task; 315 316 /* lock mib update between userspace request and workqueue */ 317 struct mutex mib_update_lock; 318 319 /* mac clock */ 320 struct clk *mac_clk; 321 322 /* phy clock if internal phy is used */ 323 struct clk *phy_clk; 324 325 /* network device reference */ 326 struct net_device *net_dev; 327 328 /* platform device reference */ 329 struct platform_device *pdev; 330 331 /* maximum hardware transmit/receive size */ 332 unsigned int hw_mtu; 333 334 bool enet_is_sw; 335 336 /* port mapping for switch devices */ 337 int num_ports; 338 struct bcm63xx_enetsw_port used_ports[ENETSW_MAX_PORT]; 339 int sw_port_link[ENETSW_MAX_PORT]; 340 341 /* used to poll switch port state */ 342 struct timer_list swphy_poll; 343 spinlock_t enetsw_mdio_lock; 344 345 /* dma channel enable mask */ 346 u32 dma_chan_en_mask; 347 348 /* dma channel interrupt mask */ 349 u32 dma_chan_int_mask; 350 351 /* DMA engine has internal SRAM */ 352 bool dma_has_sram; 353 354 /* dma channel width */ 355 unsigned int dma_chan_width; 356 357 /* dma descriptor shift value */ 358 unsigned int dma_desc_shift; 359 }; 360 361 362 #endif /* ! BCM63XX_ENET_H_ */ 363