1 /* SPDX-License-Identifier: (GPL-2.0 OR MIT) */ 2 /* 3 * DSA driver for: 4 * Hirschmann Hellcreek TSN switch. 5 * 6 * Copyright (C) 2019-2021 Linutronix GmbH 7 * Author Kurt Kanzenbach <kurt@linutronix.de> 8 */ 9 10 #ifndef _HELLCREEK_H_ 11 #define _HELLCREEK_H_ 12 13 #include <linux/bitmap.h> 14 #include <linux/bitops.h> 15 #include <linux/device.h> 16 #include <linux/kernel.h> 17 #include <linux/mutex.h> 18 #include <linux/workqueue.h> 19 #include <linux/leds.h> 20 #include <linux/platform_data/hirschmann-hellcreek.h> 21 #include <linux/ptp_clock_kernel.h> 22 #include <linux/timecounter.h> 23 #include <net/dsa.h> 24 #include <net/pkt_sched.h> 25 26 /* Ports: 27 * - 0: CPU 28 * - 1: Tunnel 29 * - 2: TSN front port 1 30 * - 3: TSN front port 2 31 * - ... 32 */ 33 #define CPU_PORT 0 34 #define TUNNEL_PORT 1 35 36 #define HELLCREEK_VLAN_NO_MEMBER 0x0 37 #define HELLCREEK_VLAN_UNTAGGED_MEMBER 0x1 38 #define HELLCREEK_VLAN_TAGGED_MEMBER 0x3 39 #define HELLCREEK_NUM_EGRESS_QUEUES 8 40 #define HELLCREEK_DEFAULT_MAX_SDU 1536 41 42 /* Register definitions */ 43 #define HR_MODID_C (0 * 2) 44 #define HR_REL_L_C (1 * 2) 45 #define HR_REL_H_C (2 * 2) 46 #define HR_BLD_L_C (3 * 2) 47 #define HR_BLD_H_C (4 * 2) 48 #define HR_CTRL_C (5 * 2) 49 #define HR_CTRL_C_READY BIT(14) 50 #define HR_CTRL_C_TRANSITION BIT(13) 51 #define HR_CTRL_C_ENABLE BIT(0) 52 53 #define HR_PSEL (0xa6 * 2) 54 #define HR_PSEL_PTWSEL_SHIFT 4 55 #define HR_PSEL_PTWSEL_MASK GENMASK(5, 4) 56 #define HR_PSEL_PRTCWSEL_SHIFT 0 57 #define HR_PSEL_PRTCWSEL_MASK GENMASK(2, 0) 58 59 #define HR_PTCFG (0xa7 * 2) 60 #define HR_PTCFG_MLIMIT_EN BIT(13) 61 #define HR_PTCFG_UMC_FLT BIT(10) 62 #define HR_PTCFG_UUC_FLT BIT(9) 63 #define HR_PTCFG_UNTRUST BIT(8) 64 #define HR_PTCFG_TAG_REQUIRED BIT(7) 65 #define HR_PTCFG_PPRIO_SHIFT 4 66 #define HR_PTCFG_PPRIO_MASK GENMASK(6, 4) 67 #define HR_PTCFG_INGRESSFLT BIT(3) 68 #define HR_PTCFG_BLOCKED BIT(2) 69 #define HR_PTCFG_LEARNING_EN BIT(1) 70 #define HR_PTCFG_ADMIN_EN BIT(0) 71 72 #define HR_PRTCCFG (0xa8 * 2) 73 #define HR_PRTCCFG_PCP_TC_MAP_SHIFT 0 74 #define HR_PRTCCFG_PCP_TC_MAP_MASK GENMASK(2, 0) 75 76 #define HR_PTPRTCCFG (0xa9 * 2) 77 #define HR_PTPRTCCFG_SET_QTRACK BIT(15) 78 #define HR_PTPRTCCFG_REJECT BIT(14) 79 #define HR_PTPRTCCFG_MAXSDU_SHIFT 0 80 #define HR_PTPRTCCFG_MAXSDU_MASK GENMASK(10, 0) 81 82 #define HR_CSEL (0x8d * 2) 83 #define HR_CSEL_SHIFT 0 84 #define HR_CSEL_MASK GENMASK(7, 0) 85 #define HR_CRDL (0x8e * 2) 86 #define HR_CRDH (0x8f * 2) 87 88 #define HR_SWTRC_CFG (0x90 * 2) 89 #define HR_SWTRC0 (0x91 * 2) 90 #define HR_SWTRC1 (0x92 * 2) 91 #define HR_PFREE (0x93 * 2) 92 #define HR_MFREE (0x94 * 2) 93 94 #define HR_FDBAGE (0x97 * 2) 95 #define HR_FDBMAX (0x98 * 2) 96 #define HR_FDBRDL (0x99 * 2) 97 #define HR_FDBRDM (0x9a * 2) 98 #define HR_FDBRDH (0x9b * 2) 99 100 #define HR_FDBMDRD (0x9c * 2) 101 #define HR_FDBMDRD_PORTMASK_SHIFT 0 102 #define HR_FDBMDRD_PORTMASK_MASK GENMASK(3, 0) 103 #define HR_FDBMDRD_AGE_SHIFT 4 104 #define HR_FDBMDRD_AGE_MASK GENMASK(7, 4) 105 #define HR_FDBMDRD_OBT BIT(8) 106 #define HR_FDBMDRD_PASS_BLOCKED BIT(9) 107 #define HR_FDBMDRD_STATIC BIT(11) 108 #define HR_FDBMDRD_REPRIO_TC_SHIFT 12 109 #define HR_FDBMDRD_REPRIO_TC_MASK GENMASK(14, 12) 110 #define HR_FDBMDRD_REPRIO_EN BIT(15) 111 112 #define HR_FDBWDL (0x9d * 2) 113 #define HR_FDBWDM (0x9e * 2) 114 #define HR_FDBWDH (0x9f * 2) 115 #define HR_FDBWRM0 (0xa0 * 2) 116 #define HR_FDBWRM0_PORTMASK_SHIFT 0 117 #define HR_FDBWRM0_PORTMASK_MASK GENMASK(3, 0) 118 #define HR_FDBWRM0_OBT BIT(8) 119 #define HR_FDBWRM0_PASS_BLOCKED BIT(9) 120 #define HR_FDBWRM0_REPRIO_TC_SHIFT 12 121 #define HR_FDBWRM0_REPRIO_TC_MASK GENMASK(14, 12) 122 #define HR_FDBWRM0_REPRIO_EN BIT(15) 123 #define HR_FDBWRM1 (0xa1 * 2) 124 125 #define HR_FDBWRCMD (0xa2 * 2) 126 #define HR_FDBWRCMD_FDBDEL BIT(9) 127 128 #define HR_SWCFG (0xa3 * 2) 129 #define HR_SWCFG_GM_STATEMD BIT(15) 130 #define HR_SWCFG_LAS_MODE_SHIFT 12 131 #define HR_SWCFG_LAS_MODE_MASK GENMASK(13, 12) 132 #define HR_SWCFG_LAS_OFF (0x00) 133 #define HR_SWCFG_LAS_ON (0x01) 134 #define HR_SWCFG_LAS_STATIC (0x10) 135 #define HR_SWCFG_CT_EN BIT(11) 136 #define HR_SWCFG_VLAN_UNAWARE BIT(10) 137 #define HR_SWCFG_ALWAYS_OBT BIT(9) 138 #define HR_SWCFG_FDBAGE_EN BIT(5) 139 #define HR_SWCFG_FDBLRN_EN BIT(4) 140 141 #define HR_SWSTAT (0xa4 * 2) 142 #define HR_SWSTAT_FAIL BIT(4) 143 #define HR_SWSTAT_BUSY BIT(0) 144 145 #define HR_SWCMD (0xa5 * 2) 146 #define HW_SWCMD_FLUSH BIT(0) 147 148 #define HR_VIDCFG (0xaa * 2) 149 #define HR_VIDCFG_VID_SHIFT 0 150 #define HR_VIDCFG_VID_MASK GENMASK(11, 0) 151 #define HR_VIDCFG_PVID BIT(12) 152 153 #define HR_VIDMBRCFG (0xab * 2) 154 #define HR_VIDMBRCFG_P0MBR_SHIFT 0 155 #define HR_VIDMBRCFG_P0MBR_MASK GENMASK(1, 0) 156 #define HR_VIDMBRCFG_P1MBR_SHIFT 2 157 #define HR_VIDMBRCFG_P1MBR_MASK GENMASK(3, 2) 158 #define HR_VIDMBRCFG_P2MBR_SHIFT 4 159 #define HR_VIDMBRCFG_P2MBR_MASK GENMASK(5, 4) 160 #define HR_VIDMBRCFG_P3MBR_SHIFT 6 161 #define HR_VIDMBRCFG_P3MBR_MASK GENMASK(7, 6) 162 163 #define HR_FEABITS0 (0xac * 2) 164 #define HR_FEABITS0_FDBBINS_SHIFT 4 165 #define HR_FEABITS0_FDBBINS_MASK GENMASK(7, 4) 166 #define HR_FEABITS0_PCNT_SHIFT 8 167 #define HR_FEABITS0_PCNT_MASK GENMASK(11, 8) 168 #define HR_FEABITS0_MCNT_SHIFT 12 169 #define HR_FEABITS0_MCNT_MASK GENMASK(15, 12) 170 171 #define TR_QTRACK (0xb1 * 2) 172 #define TR_TGDVER (0xb3 * 2) 173 #define TR_TGDVER_REV_MIN_MASK GENMASK(7, 0) 174 #define TR_TGDVER_REV_MIN_SHIFT 0 175 #define TR_TGDVER_REV_MAJ_MASK GENMASK(15, 8) 176 #define TR_TGDVER_REV_MAJ_SHIFT 8 177 #define TR_TGDSEL (0xb4 * 2) 178 #define TR_TGDSEL_TDGSEL_MASK GENMASK(1, 0) 179 #define TR_TGDSEL_TDGSEL_SHIFT 0 180 #define TR_TGDCTRL (0xb5 * 2) 181 #define TR_TGDCTRL_GATE_EN BIT(0) 182 #define TR_TGDCTRL_CYC_SNAP BIT(4) 183 #define TR_TGDCTRL_SNAP_EST BIT(5) 184 #define TR_TGDCTRL_ADMINGATESTATES_MASK GENMASK(15, 8) 185 #define TR_TGDCTRL_ADMINGATESTATES_SHIFT 8 186 #define TR_TGDSTAT0 (0xb6 * 2) 187 #define TR_TGDSTAT1 (0xb7 * 2) 188 #define TR_ESTWRL (0xb8 * 2) 189 #define TR_ESTWRH (0xb9 * 2) 190 #define TR_ESTCMD (0xba * 2) 191 #define TR_ESTCMD_ESTSEC_MASK GENMASK(2, 0) 192 #define TR_ESTCMD_ESTSEC_SHIFT 0 193 #define TR_ESTCMD_ESTARM BIT(4) 194 #define TR_ESTCMD_ESTSWCFG BIT(5) 195 #define TR_EETWRL (0xbb * 2) 196 #define TR_EETWRH (0xbc * 2) 197 #define TR_EETCMD (0xbd * 2) 198 #define TR_EETCMD_EETSEC_MASK GEMASK(2, 0) 199 #define TR_EETCMD_EETSEC_SHIFT 0 200 #define TR_EETCMD_EETARM BIT(4) 201 #define TR_CTWRL (0xbe * 2) 202 #define TR_CTWRH (0xbf * 2) 203 #define TR_LCNSL (0xc1 * 2) 204 #define TR_LCNSH (0xc2 * 2) 205 #define TR_LCS (0xc3 * 2) 206 #define TR_GCLDAT (0xc4 * 2) 207 #define TR_GCLDAT_GCLWRGATES_MASK GENMASK(7, 0) 208 #define TR_GCLDAT_GCLWRGATES_SHIFT 0 209 #define TR_GCLDAT_GCLWRLAST BIT(8) 210 #define TR_GCLDAT_GCLOVRI BIT(9) 211 #define TR_GCLTIL (0xc5 * 2) 212 #define TR_GCLTIH (0xc6 * 2) 213 #define TR_GCLCMD (0xc7 * 2) 214 #define TR_GCLCMD_GCLWRADR_MASK GENMASK(7, 0) 215 #define TR_GCLCMD_GCLWRADR_SHIFT 0 216 #define TR_GCLCMD_INIT_GATE_STATES_MASK GENMASK(15, 8) 217 #define TR_GCLCMD_INIT_GATE_STATES_SHIFT 8 218 219 struct hellcreek_counter { 220 u8 offset; 221 const char *name; 222 }; 223 224 struct hellcreek; 225 226 /* State flags for hellcreek_port_hwtstamp::state */ 227 enum { 228 HELLCREEK_HWTSTAMP_ENABLED, 229 HELLCREEK_HWTSTAMP_TX_IN_PROGRESS, 230 }; 231 232 /* A structure to hold hardware timestamping information per port */ 233 struct hellcreek_port_hwtstamp { 234 /* Timestamping state */ 235 unsigned long state; 236 237 /* Resources for receive timestamping */ 238 struct sk_buff_head rx_queue; /* For synchronization messages */ 239 240 /* Resources for transmit timestamping */ 241 unsigned long tx_tstamp_start; 242 struct sk_buff *tx_skb; 243 244 /* Current timestamp configuration */ 245 struct hwtstamp_config tstamp_config; 246 }; 247 248 struct hellcreek_port { 249 struct hellcreek *hellcreek; 250 unsigned long *vlan_dev_bitmap; 251 int port; 252 u16 ptcfg; /* ptcfg shadow */ 253 u64 *counter_values; 254 255 /* Per-port timestamping resources */ 256 struct hellcreek_port_hwtstamp port_hwtstamp; 257 258 /* Per-port Qbv schedule information */ 259 struct tc_taprio_qopt_offload *current_schedule; 260 struct delayed_work schedule_work; 261 }; 262 263 struct hellcreek_fdb_entry { 264 size_t idx; 265 unsigned char mac[ETH_ALEN]; 266 u8 portmask; 267 u8 age; 268 u8 is_obt; 269 u8 pass_blocked; 270 u8 is_static; 271 u8 reprio_tc; 272 u8 reprio_en; 273 }; 274 275 struct hellcreek { 276 const struct hellcreek_platform_data *pdata; 277 struct device *dev; 278 struct dsa_switch *ds; 279 struct ptp_clock *ptp_clock; 280 struct ptp_clock_info ptp_clock_info; 281 struct hellcreek_port *ports; 282 struct delayed_work overflow_work; 283 struct led_classdev led_is_gm; 284 struct led_classdev led_sync_good; 285 struct mutex reg_lock; /* Switch IP register lock */ 286 struct mutex vlan_lock; /* VLAN bitmaps lock */ 287 struct mutex ptp_lock; /* PTP IP register lock */ 288 struct devlink_region *vlan_region; 289 struct devlink_region *fdb_region; 290 void __iomem *base; 291 void __iomem *ptp_base; 292 u16 swcfg; /* swcfg shadow */ 293 u8 *vidmbrcfg; /* vidmbrcfg shadow */ 294 u64 seconds; /* PTP seconds */ 295 u64 last_ts; /* Used for overflow detection */ 296 u16 status_out; /* ptp.status_out shadow */ 297 size_t fdb_entries; 298 }; 299 300 /* A Qbv schedule can only started up to 8 seconds in the future. If the delta 301 * between the base time and the current ptp time is larger than 8 seconds, then 302 * use periodic work to check for the schedule to be started. The delayed work 303 * cannot be armed directly to $base_time - 8 + X, because for large deltas the 304 * PTP frequency matters. 305 */ 306 #define HELLCREEK_SCHEDULE_PERIOD (2 * HZ) 307 #define dw_to_hellcreek_port(dw) \ 308 container_of(dw, struct hellcreek_port, schedule_work) 309 310 /* Devlink resources */ 311 enum hellcreek_devlink_resource_id { 312 HELLCREEK_DEVLINK_PARAM_ID_VLAN_TABLE, 313 HELLCREEK_DEVLINK_PARAM_ID_FDB_TABLE, 314 }; 315 316 struct hellcreek_devlink_vlan_entry { 317 u16 vid; 318 u16 member; 319 }; 320 321 #endif /* _HELLCREEK_H_ */ 322