1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* Copyright (C) 2021 Gerhard Engleder <gerhard@engleder-embedded.com> */ 3 4 /* Hardware definition of TSNEP and EtherCAT MAC device */ 5 6 #ifndef _TSNEP_HW_H 7 #define _TSNEP_HW_H 8 9 #include <linux/types.h> 10 11 /* type */ 12 #define ECM_TYPE 0x0000 13 #define ECM_REVISION_MASK 0x000000FF 14 #define ECM_REVISION_SHIFT 0 15 #define ECM_VERSION_MASK 0x0000FF00 16 #define ECM_VERSION_SHIFT 8 17 #define ECM_QUEUE_COUNT_MASK 0x00070000 18 #define ECM_QUEUE_COUNT_SHIFT 16 19 #define ECM_GATE_CONTROL 0x02000000 20 21 /* system time */ 22 #define ECM_SYSTEM_TIME_LOW 0x0008 23 #define ECM_SYSTEM_TIME_HIGH 0x000C 24 25 /* clock */ 26 #define ECM_CLOCK_RATE 0x0010 27 #define ECM_CLOCK_RATE_OFFSET_MASK 0x7FFFFFFF 28 #define ECM_CLOCK_RATE_OFFSET_SIGN 0x80000000 29 30 /* interrupt */ 31 #define ECM_INT_ENABLE 0x0018 32 #define ECM_INT_ACTIVE 0x001C 33 #define ECM_INT_ACKNOWLEDGE 0x001C 34 #define ECM_INT_LINK 0x00000020 35 #define ECM_INT_TX_0 0x00000100 36 #define ECM_INT_RX_0 0x00000200 37 #define ECM_INT_TXRX_SHIFT 2 38 #define ECM_INT_ALL 0x7FFFFFFF 39 #define ECM_INT_DISABLE 0x80000000 40 41 /* reset */ 42 #define ECM_RESET 0x0020 43 #define ECM_RESET_COMMON 0x00000001 44 #define ECM_RESET_CHANNEL 0x00000100 45 #define ECM_RESET_TXRX 0x00010000 46 47 /* counter */ 48 #define ECM_COUNTER_LOW 0x0028 49 #define ECM_COUNTER_HIGH 0x002C 50 51 /* interrupt delay */ 52 #define ECM_INT_DELAY 0x0030 53 #define ECM_INT_DELAY_MASK 0xF0 54 #define ECM_INT_DELAY_SHIFT 4 55 #define ECM_INT_DELAY_BASE_US 16 56 #define ECM_INT_DELAY_OFFSET 1 57 58 /* control and status */ 59 #define ECM_STATUS 0x0080 60 #define ECM_LINK_MODE_OFF 0x01000000 61 #define ECM_LINK_MODE_100 0x02000000 62 #define ECM_LINK_MODE_1000 0x04000000 63 #define ECM_NO_LINK 0x01000000 64 #define ECM_LINK_MODE_MASK 0x06000000 65 66 /* management data */ 67 #define ECM_MD_CONTROL 0x0084 68 #define ECM_MD_STATUS 0x0084 69 #define ECM_MD_PREAMBLE 0x00000001 70 #define ECM_MD_READ 0x00000004 71 #define ECM_MD_WRITE 0x00000002 72 #define ECM_MD_ADDR_MASK 0x000000F8 73 #define ECM_MD_ADDR_SHIFT 3 74 #define ECM_MD_PHY_ADDR_MASK 0x00001F00 75 #define ECM_MD_PHY_ADDR_SHIFT 8 76 #define ECM_MD_BUSY 0x00000001 77 #define ECM_MD_DATA_MASK 0xFFFF0000 78 #define ECM_MD_DATA_SHIFT 16 79 80 /* statistic */ 81 #define ECM_STAT 0x00B0 82 #define ECM_STAT_RX_ERR_MASK 0x000000FF 83 #define ECM_STAT_RX_ERR_SHIFT 0 84 #define ECM_STAT_INV_FRM_MASK 0x0000FF00 85 #define ECM_STAT_INV_FRM_SHIFT 8 86 #define ECM_STAT_FWD_RX_ERR_MASK 0x00FF0000 87 #define ECM_STAT_FWD_RX_ERR_SHIFT 16 88 89 /* tsnep */ 90 #define TSNEP_MAC_SIZE 0x4000 91 #define TSNEP_QUEUE_SIZE 0x1000 92 #define TSNEP_QUEUE(n) ({ typeof(n) __n = (n); \ 93 (__n) == 0 ? \ 94 0 : \ 95 TSNEP_MAC_SIZE + TSNEP_QUEUE_SIZE * ((__n) - 1); }) 96 #define TSNEP_MAX_QUEUES 8 97 #define TSNEP_MAX_FRAME_SIZE (2 * 1024) /* hardware supports actually 16k */ 98 #define TSNEP_DESC_SIZE 256 99 #define TSNEP_DESC_OFFSET 128 100 101 /* tsnep register */ 102 #define TSNEP_INFO 0x0100 103 #define TSNEP_INFO_TX_TIME 0x00010000 104 #define TSNEP_CONTROL 0x0108 105 #define TSNEP_CONTROL_TX_RESET 0x00000001 106 #define TSNEP_CONTROL_TX_ENABLE 0x00000002 107 #define TSNEP_CONTROL_TX_DMA_ERROR 0x00000010 108 #define TSNEP_CONTROL_TX_DESC_ERROR 0x00000020 109 #define TSNEP_CONTROL_RX_RESET 0x00000100 110 #define TSNEP_CONTROL_RX_ENABLE 0x00000200 111 #define TSNEP_CONTROL_RX_DISABLE 0x00000400 112 #define TSNEP_CONTROL_RX_DMA_ERROR 0x00001000 113 #define TSNEP_CONTROL_RX_DESC_ERROR 0x00002000 114 #define TSNEP_TX_DESC_ADDR_LOW 0x0140 115 #define TSNEP_TX_DESC_ADDR_HIGH 0x0144 116 #define TSNEP_RX_DESC_ADDR_LOW 0x0180 117 #define TSNEP_RX_DESC_ADDR_HIGH 0x0184 118 #define TSNEP_RESET_OWNER_COUNTER 0x01 119 #define TSNEP_RX_STATISTIC 0x0190 120 #define TSNEP_RX_STATISTIC_NO_DESC_MASK 0x000000FF 121 #define TSNEP_RX_STATISTIC_NO_DESC_SHIFT 0 122 #define TSNEP_RX_STATISTIC_BUFFER_TOO_SMALL_MASK 0x0000FF00 123 #define TSNEP_RX_STATISTIC_BUFFER_TOO_SMALL_SHIFT 8 124 #define TSNEP_RX_STATISTIC_FIFO_OVERFLOW_MASK 0x00FF0000 125 #define TSNEP_RX_STATISTIC_FIFO_OVERFLOW_SHIFT 16 126 #define TSNEP_RX_STATISTIC_INVALID_FRAME_MASK 0xFF000000 127 #define TSNEP_RX_STATISTIC_INVALID_FRAME_SHIFT 24 128 #define TSNEP_RX_STATISTIC_NO_DESC 0x0190 129 #define TSNEP_RX_STATISTIC_BUFFER_TOO_SMALL 0x0191 130 #define TSNEP_RX_STATISTIC_FIFO_OVERFLOW 0x0192 131 #define TSNEP_RX_STATISTIC_INVALID_FRAME 0x0193 132 #define TSNEP_MAC_ADDRESS_LOW 0x0800 133 #define TSNEP_MAC_ADDRESS_HIGH 0x0804 134 #define TSNEP_RX_FILTER 0x0806 135 #define TSNEP_RX_FILTER_ACCEPT_ALL_MULTICASTS 0x0001 136 #define TSNEP_RX_FILTER_ACCEPT_ALL_UNICASTS 0x0002 137 #define TSNEP_GC 0x0808 138 #define TSNEP_GC_ENABLE_A 0x00000002 139 #define TSNEP_GC_ENABLE_B 0x00000004 140 #define TSNEP_GC_DISABLE 0x00000008 141 #define TSNEP_GC_ENABLE_TIMEOUT 0x00000010 142 #define TSNEP_GC_ACTIVE_A 0x00000002 143 #define TSNEP_GC_ACTIVE_B 0x00000004 144 #define TSNEP_GC_CHANGE_AB 0x00000008 145 #define TSNEP_GC_TIMEOUT_ACTIVE 0x00000010 146 #define TSNEP_GC_TIMEOUT_SIGNAL 0x00000020 147 #define TSNEP_GC_LIST_ERROR 0x00000080 148 #define TSNEP_GC_OPEN 0x00FF0000 149 #define TSNEP_GC_OPEN_SHIFT 16 150 #define TSNEP_GC_NEXT_OPEN 0xFF000000 151 #define TSNEP_GC_NEXT_OPEN_SHIFT 24 152 #define TSNEP_GC_TIMEOUT 131072 153 #define TSNEP_GC_TIME 0x080C 154 #define TSNEP_GC_CHANGE 0x0810 155 #define TSNEP_GCL_A 0x2000 156 #define TSNEP_GCL_B 0x2800 157 #define TSNEP_GCL_SIZE SZ_2K 158 #define TSNEP_RX_ASSIGN 0x0840 159 #define TSNEP_RX_ASSIGN_ACTIVE 0x00000001 160 #define TSNEP_RX_ASSIGN_QUEUE_MASK 0x00000006 161 #define TSNEP_RX_ASSIGN_QUEUE_SHIFT 1 162 #define TSNEP_RX_ASSIGN_OFFSET 1 163 #define TSNEP_RX_ASSIGN_ETHER_TYPE 0x0880 164 #define TSNEP_RX_ASSIGN_ETHER_TYPE_OFFSET 2 165 #define TSNEP_RX_ASSIGN_ETHER_TYPE_COUNT 2 166 167 /* tsnep gate control list operation */ 168 struct tsnep_gcl_operation { 169 u32 properties; 170 u32 interval; 171 }; 172 173 #define TSNEP_GCL_COUNT (TSNEP_GCL_SIZE / sizeof(struct tsnep_gcl_operation)) 174 #define TSNEP_GCL_MASK 0x000000FF 175 #define TSNEP_GCL_INSERT 0x20000000 176 #define TSNEP_GCL_CHANGE 0x40000000 177 #define TSNEP_GCL_LAST 0x80000000 178 #define TSNEP_GCL_MIN_INTERVAL 32 179 180 /* tsnep TX/RX descriptor */ 181 #define TSNEP_DESC_SIZE 256 182 #define TSNEP_DESC_SIZE_DATA_AFTER 2048 183 #define TSNEP_DESC_OFFSET 128 184 #define TSNEP_DESC_SIZE_DATA_AFTER_INLINE (64 - sizeof(struct tsnep_tx_desc) + \ 185 sizeof_field(struct tsnep_tx_desc, tx)) 186 #define TSNEP_DESC_OWNER_COUNTER_MASK 0xC0000000 187 #define TSNEP_DESC_OWNER_COUNTER_SHIFT 30 188 #define TSNEP_DESC_LENGTH_MASK 0x00003FFF 189 #define TSNEP_DESC_INTERRUPT_FLAG 0x00040000 190 #define TSNEP_DESC_EXTENDED_WRITEBACK_FLAG 0x00080000 191 #define TSNEP_DESC_NO_LINK_FLAG 0x01000000 192 193 /* tsnep TX descriptor */ 194 struct tsnep_tx_desc { 195 __le32 properties; 196 __le32 more_properties; 197 __le32 reserved[2]; 198 __le64 next; 199 __le64 tx; 200 }; 201 202 #define TSNEP_TX_DESC_OWNER_MASK 0xE0000000 203 #define TSNEP_TX_DESC_OWNER_USER_FLAG 0x20000000 204 #define TSNEP_TX_DESC_LAST_FRAGMENT_FLAG 0x00010000 205 #define TSNEP_TX_DESC_DATA_AFTER_DESC_FLAG 0x00020000 206 207 /* tsnep TX descriptor writeback */ 208 struct tsnep_tx_desc_wb { 209 __le32 properties; 210 __le32 reserved1; 211 __le64 counter; 212 __le64 timestamp; 213 __le32 dma_delay; 214 __le32 reserved2; 215 }; 216 217 #define TSNEP_TX_DESC_UNDERRUN_ERROR_FLAG 0x00010000 218 #define TSNEP_TX_DESC_DMA_DELAY_FIRST_DATA_MASK 0x0000FFFC 219 #define TSNEP_TX_DESC_DMA_DELAY_FIRST_DATA_SHIFT 2 220 #define TSNEP_TX_DESC_DMA_DELAY_LAST_DATA_MASK 0xFFFC0000 221 #define TSNEP_TX_DESC_DMA_DELAY_LAST_DATA_SHIFT 18 222 #define TSNEP_TX_DESC_DMA_DELAY_NS 64 223 224 /* tsnep RX descriptor */ 225 struct tsnep_rx_desc { 226 __le32 properties; 227 __le32 reserved[3]; 228 __le64 next; 229 __le64 rx; 230 }; 231 232 #define TSNEP_RX_DESC_BUFFER_SIZE_MASK 0x00003FFC 233 234 /* tsnep RX descriptor writeback */ 235 struct tsnep_rx_desc_wb { 236 __le32 properties; 237 __le32 reserved[7]; 238 }; 239 240 /* tsnep RX inline meta */ 241 struct tsnep_rx_inline { 242 __le64 counter; 243 __le64 timestamp; 244 }; 245 246 #define TSNEP_RX_INLINE_METADATA_SIZE (sizeof(struct tsnep_rx_inline)) 247 248 #endif /* _TSNEP_HW_H */ 249