1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Marvell 88E6xxx Switch Global (1) Registers support
5 * Copyright (c) 2008 Marvell Semiconductor
7 * Copyright (c) 2016-2017 Savoir-faire Linux Inc.
8 * Vivien Didelot <vivien.didelot@savoirfairelinux.com>
11 #include <linux/bitfield.h>
16 int mv88e6xxx_g1_read(struct mv88e6xxx_chip *chip, int reg, u16 *val)
18 int addr = chip->info->global1_addr;
20 return mv88e6xxx_read(chip, addr, reg, val);
23 int mv88e6xxx_g1_write(struct mv88e6xxx_chip *chip, int reg, u16 val)
25 int addr = chip->info->global1_addr;
27 return mv88e6xxx_write(chip, addr, reg, val);
30 int mv88e6xxx_g1_wait_bit(struct mv88e6xxx_chip *chip, int reg, int
33 return mv88e6xxx_wait_bit(chip, chip->info->global1_addr, reg,
37 int mv88e6xxx_g1_wait_mask(struct mv88e6xxx_chip *chip, int reg,
40 return mv88e6xxx_wait_mask(chip, chip->info->global1_addr, reg,
44 /* Offset 0x00: Switch Global Status Register */
46 static int mv88e6185_g1_wait_ppu_disabled(struct mv88e6xxx_chip *chip)
48 return mv88e6xxx_g1_wait_mask(chip, MV88E6XXX_G1_STS,
49 MV88E6185_G1_STS_PPU_STATE_MASK,
50 MV88E6185_G1_STS_PPU_STATE_DISABLED);
53 static int mv88e6185_g1_wait_ppu_polling(struct mv88e6xxx_chip *chip)
55 return mv88e6xxx_g1_wait_mask(chip, MV88E6XXX_G1_STS,
56 MV88E6185_G1_STS_PPU_STATE_MASK,
57 MV88E6185_G1_STS_PPU_STATE_POLLING);
60 static int mv88e6352_g1_wait_ppu_polling(struct mv88e6xxx_chip *chip)
62 int bit = __bf_shf(MV88E6352_G1_STS_PPU_STATE);
64 return mv88e6xxx_g1_wait_bit(chip, MV88E6XXX_G1_STS, bit, 1);
67 static int mv88e6xxx_g1_wait_init_ready(struct mv88e6xxx_chip *chip)
69 int bit = __bf_shf(MV88E6XXX_G1_STS_INIT_READY);
71 /* Wait up to 1 second for the switch to be ready. The InitReady bit 11
72 * is set to a one when all units inside the device (ATU, VTU, etc.)
73 * have finished their initialization and are ready to accept frames.
75 return mv88e6xxx_g1_wait_bit(chip, MV88E6XXX_G1_STS, bit, 1);
78 /* Offset 0x01: Switch MAC Address Register Bytes 0 & 1
79 * Offset 0x02: Switch MAC Address Register Bytes 2 & 3
80 * Offset 0x03: Switch MAC Address Register Bytes 4 & 5
82 int mv88e6xxx_g1_set_switch_mac(struct mv88e6xxx_chip *chip, u8 *addr)
87 reg = (addr[0] << 8) | addr[1];
88 err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_MAC_01, reg);
92 reg = (addr[2] << 8) | addr[3];
93 err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_MAC_23, reg);
97 reg = (addr[4] << 8) | addr[5];
98 err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_MAC_45, reg);
105 /* Offset 0x04: Switch Global Control Register */
107 int mv88e6185_g1_reset(struct mv88e6xxx_chip *chip)
112 /* Set the SWReset bit 15 along with the PPUEn bit 14, to also restart
113 * the PPU, including re-doing PHY detection and initialization
115 err = mv88e6xxx_g1_read(chip, MV88E6XXX_G1_CTL1, &val);
119 val |= MV88E6XXX_G1_CTL1_SW_RESET;
120 val |= MV88E6XXX_G1_CTL1_PPU_ENABLE;
122 err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_CTL1, val);
126 err = mv88e6xxx_g1_wait_init_ready(chip);
130 return mv88e6185_g1_wait_ppu_polling(chip);
133 int mv88e6250_g1_reset(struct mv88e6xxx_chip *chip)
138 /* Set the SWReset bit 15 */
139 err = mv88e6xxx_g1_read(chip, MV88E6XXX_G1_CTL1, &val);
143 val |= MV88E6XXX_G1_CTL1_SW_RESET;
145 err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_CTL1, val);
149 return mv88e6xxx_g1_wait_init_ready(chip);
152 int mv88e6352_g1_reset(struct mv88e6xxx_chip *chip)
156 err = mv88e6250_g1_reset(chip);
160 return mv88e6352_g1_wait_ppu_polling(chip);
163 int mv88e6185_g1_ppu_enable(struct mv88e6xxx_chip *chip)
168 err = mv88e6xxx_g1_read(chip, MV88E6XXX_G1_CTL1, &val);
172 val |= MV88E6XXX_G1_CTL1_PPU_ENABLE;
174 err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_CTL1, val);
178 return mv88e6185_g1_wait_ppu_polling(chip);
181 int mv88e6185_g1_ppu_disable(struct mv88e6xxx_chip *chip)
186 err = mv88e6xxx_g1_read(chip, MV88E6XXX_G1_CTL1, &val);
190 val &= ~MV88E6XXX_G1_CTL1_PPU_ENABLE;
192 err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_CTL1, val);
196 return mv88e6185_g1_wait_ppu_disabled(chip);
199 int mv88e6185_g1_set_max_frame_size(struct mv88e6xxx_chip *chip, int mtu)
204 mtu += ETH_HLEN + ETH_FCS_LEN;
206 err = mv88e6xxx_g1_read(chip, MV88E6XXX_G1_CTL1, &val);
210 val &= ~MV88E6185_G1_CTL1_MAX_FRAME_1632;
213 val |= MV88E6185_G1_CTL1_MAX_FRAME_1632;
215 return mv88e6xxx_g1_write(chip, MV88E6XXX_G1_CTL1, val);
218 /* Offset 0x10: IP-PRI Mapping Register 0
219 * Offset 0x11: IP-PRI Mapping Register 1
220 * Offset 0x12: IP-PRI Mapping Register 2
221 * Offset 0x13: IP-PRI Mapping Register 3
222 * Offset 0x14: IP-PRI Mapping Register 4
223 * Offset 0x15: IP-PRI Mapping Register 5
224 * Offset 0x16: IP-PRI Mapping Register 6
225 * Offset 0x17: IP-PRI Mapping Register 7
228 int mv88e6085_g1_ip_pri_map(struct mv88e6xxx_chip *chip)
232 /* Reset the IP TOS/DiffServ/Traffic priorities to defaults */
233 err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_IP_PRI_0, 0x0000);
237 err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_IP_PRI_1, 0x0000);
241 err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_IP_PRI_2, 0x5555);
245 err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_IP_PRI_3, 0x5555);
249 err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_IP_PRI_4, 0xaaaa);
253 err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_IP_PRI_5, 0xaaaa);
257 err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_IP_PRI_6, 0xffff);
261 err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_IP_PRI_7, 0xffff);
268 /* Offset 0x18: IEEE-PRI Register */
270 int mv88e6085_g1_ieee_pri_map(struct mv88e6xxx_chip *chip)
272 /* Reset the IEEE Tag priorities to defaults */
273 return mv88e6xxx_g1_write(chip, MV88E6XXX_G1_IEEE_PRI, 0xfa41);
276 int mv88e6250_g1_ieee_pri_map(struct mv88e6xxx_chip *chip)
278 /* Reset the IEEE Tag priorities to defaults */
279 return mv88e6xxx_g1_write(chip, MV88E6XXX_G1_IEEE_PRI, 0xfa50);
282 /* Offset 0x1a: Monitor Control */
283 /* Offset 0x1a: Monitor & MGMT Control on some devices */
285 int mv88e6095_g1_set_egress_port(struct mv88e6xxx_chip *chip,
286 enum mv88e6xxx_egress_direction direction,
292 err = mv88e6xxx_g1_read(chip, MV88E6185_G1_MONITOR_CTL, ®);
297 case MV88E6XXX_EGRESS_DIR_INGRESS:
298 reg &= ~MV88E6185_G1_MONITOR_CTL_INGRESS_DEST_MASK;
300 __bf_shf(MV88E6185_G1_MONITOR_CTL_INGRESS_DEST_MASK);
302 case MV88E6XXX_EGRESS_DIR_EGRESS:
303 reg &= ~MV88E6185_G1_MONITOR_CTL_EGRESS_DEST_MASK;
305 __bf_shf(MV88E6185_G1_MONITOR_CTL_EGRESS_DEST_MASK);
311 return mv88e6xxx_g1_write(chip, MV88E6185_G1_MONITOR_CTL, reg);
314 /* Older generations also call this the ARP destination. It has been
315 * generalized in more modern devices such that more than ARP can
318 int mv88e6095_g1_set_cpu_port(struct mv88e6xxx_chip *chip, int port)
323 err = mv88e6xxx_g1_read(chip, MV88E6185_G1_MONITOR_CTL, ®);
327 reg &= ~MV88E6185_G1_MONITOR_CTL_ARP_DEST_MASK;
328 reg |= port << __bf_shf(MV88E6185_G1_MONITOR_CTL_ARP_DEST_MASK);
330 return mv88e6xxx_g1_write(chip, MV88E6185_G1_MONITOR_CTL, reg);
333 static int mv88e6390_g1_monitor_write(struct mv88e6xxx_chip *chip,
334 u16 pointer, u8 data)
338 reg = MV88E6390_G1_MONITOR_MGMT_CTL_UPDATE | pointer | data;
340 return mv88e6xxx_g1_write(chip, MV88E6390_G1_MONITOR_MGMT_CTL, reg);
343 int mv88e6390_g1_set_egress_port(struct mv88e6xxx_chip *chip,
344 enum mv88e6xxx_egress_direction direction,
350 case MV88E6XXX_EGRESS_DIR_INGRESS:
351 ptr = MV88E6390_G1_MONITOR_MGMT_CTL_PTR_INGRESS_DEST;
353 case MV88E6XXX_EGRESS_DIR_EGRESS:
354 ptr = MV88E6390_G1_MONITOR_MGMT_CTL_PTR_EGRESS_DEST;
360 return mv88e6390_g1_monitor_write(chip, ptr, port);
363 int mv88e6390_g1_set_cpu_port(struct mv88e6xxx_chip *chip, int port)
365 u16 ptr = MV88E6390_G1_MONITOR_MGMT_CTL_PTR_CPU_DEST;
367 /* Use the default high priority for management frames sent to
370 port |= MV88E6390_G1_MONITOR_MGMT_CTL_PTR_CPU_DEST_MGMTPRI;
372 return mv88e6390_g1_monitor_write(chip, ptr, port);
375 int mv88e6390_g1_set_ptp_cpu_port(struct mv88e6xxx_chip *chip, int port)
377 u16 ptr = MV88E6390_G1_MONITOR_MGMT_CTL_PTR_PTP_CPU_DEST;
379 /* Use the default high priority for PTP frames sent to
382 port |= MV88E6390_G1_MONITOR_MGMT_CTL_PTR_CPU_DEST_MGMTPRI;
384 return mv88e6390_g1_monitor_write(chip, ptr, port);
387 int mv88e6390_g1_mgmt_rsvd2cpu(struct mv88e6xxx_chip *chip)
392 /* 01:80:c2:00:00:00-01:80:c2:00:00:07 are Management */
393 ptr = MV88E6390_G1_MONITOR_MGMT_CTL_PTR_0180C200000XLO;
394 err = mv88e6390_g1_monitor_write(chip, ptr, 0xff);
398 /* 01:80:c2:00:00:08-01:80:c2:00:00:0f are Management */
399 ptr = MV88E6390_G1_MONITOR_MGMT_CTL_PTR_0180C200000XHI;
400 err = mv88e6390_g1_monitor_write(chip, ptr, 0xff);
404 /* 01:80:c2:00:00:20-01:80:c2:00:00:27 are Management */
405 ptr = MV88E6390_G1_MONITOR_MGMT_CTL_PTR_0180C200002XLO;
406 err = mv88e6390_g1_monitor_write(chip, ptr, 0xff);
410 /* 01:80:c2:00:00:28-01:80:c2:00:00:2f are Management */
411 ptr = MV88E6390_G1_MONITOR_MGMT_CTL_PTR_0180C200002XHI;
412 err = mv88e6390_g1_monitor_write(chip, ptr, 0xff);
419 /* Offset 0x1c: Global Control 2 */
421 static int mv88e6xxx_g1_ctl2_mask(struct mv88e6xxx_chip *chip, u16 mask,
427 err = mv88e6xxx_g1_read(chip, MV88E6XXX_G1_CTL2, ®);
434 return mv88e6xxx_g1_write(chip, MV88E6XXX_G1_CTL2, reg);
437 int mv88e6185_g1_set_cascade_port(struct mv88e6xxx_chip *chip, int port)
439 const u16 mask = MV88E6185_G1_CTL2_CASCADE_PORT_MASK;
441 return mv88e6xxx_g1_ctl2_mask(chip, mask, port << __bf_shf(mask));
444 int mv88e6085_g1_rmu_disable(struct mv88e6xxx_chip *chip)
446 return mv88e6xxx_g1_ctl2_mask(chip, MV88E6085_G1_CTL2_P10RM |
447 MV88E6085_G1_CTL2_RM_ENABLE, 0);
450 int mv88e6352_g1_rmu_disable(struct mv88e6xxx_chip *chip)
452 return mv88e6xxx_g1_ctl2_mask(chip, MV88E6352_G1_CTL2_RMU_MODE_MASK,
453 MV88E6352_G1_CTL2_RMU_MODE_DISABLED);
456 int mv88e6390_g1_rmu_disable(struct mv88e6xxx_chip *chip)
458 return mv88e6xxx_g1_ctl2_mask(chip, MV88E6390_G1_CTL2_RMU_MODE_MASK,
459 MV88E6390_G1_CTL2_RMU_MODE_DISABLED);
462 int mv88e6390_g1_stats_set_histogram(struct mv88e6xxx_chip *chip)
464 return mv88e6xxx_g1_ctl2_mask(chip, MV88E6390_G1_CTL2_HIST_MODE_MASK,
465 MV88E6390_G1_CTL2_HIST_MODE_RX |
466 MV88E6390_G1_CTL2_HIST_MODE_TX);
469 int mv88e6xxx_g1_set_device_number(struct mv88e6xxx_chip *chip, int index)
471 return mv88e6xxx_g1_ctl2_mask(chip,
472 MV88E6XXX_G1_CTL2_DEVICE_NUMBER_MASK,
476 /* Offset 0x1d: Statistics Operation 2 */
478 static int mv88e6xxx_g1_stats_wait(struct mv88e6xxx_chip *chip)
480 int bit = __bf_shf(MV88E6XXX_G1_STATS_OP_BUSY);
482 return mv88e6xxx_g1_wait_bit(chip, MV88E6XXX_G1_STATS_OP, bit, 0);
485 int mv88e6095_g1_stats_set_histogram(struct mv88e6xxx_chip *chip)
490 err = mv88e6xxx_g1_read(chip, MV88E6XXX_G1_STATS_OP, &val);
494 val |= MV88E6XXX_G1_STATS_OP_HIST_RX_TX;
496 err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_STATS_OP, val);
501 int mv88e6xxx_g1_stats_snapshot(struct mv88e6xxx_chip *chip, int port)
505 /* Snapshot the hardware statistics counters for this port. */
506 err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_STATS_OP,
507 MV88E6XXX_G1_STATS_OP_BUSY |
508 MV88E6XXX_G1_STATS_OP_CAPTURE_PORT |
509 MV88E6XXX_G1_STATS_OP_HIST_RX_TX | port);
513 /* Wait for the snapshotting to complete. */
514 return mv88e6xxx_g1_stats_wait(chip);
517 int mv88e6320_g1_stats_snapshot(struct mv88e6xxx_chip *chip, int port)
519 port = (port + 1) << 5;
521 return mv88e6xxx_g1_stats_snapshot(chip, port);
524 int mv88e6390_g1_stats_snapshot(struct mv88e6xxx_chip *chip, int port)
528 port = (port + 1) << 5;
530 /* Snapshot the hardware statistics counters for this port. */
531 err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_STATS_OP,
532 MV88E6XXX_G1_STATS_OP_BUSY |
533 MV88E6XXX_G1_STATS_OP_CAPTURE_PORT | port);
537 /* Wait for the snapshotting to complete. */
538 return mv88e6xxx_g1_stats_wait(chip);
541 void mv88e6xxx_g1_stats_read(struct mv88e6xxx_chip *chip, int stat, u32 *val)
549 err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_STATS_OP,
550 MV88E6XXX_G1_STATS_OP_BUSY |
551 MV88E6XXX_G1_STATS_OP_READ_CAPTURED | stat);
555 err = mv88e6xxx_g1_stats_wait(chip);
559 err = mv88e6xxx_g1_read(chip, MV88E6XXX_G1_STATS_COUNTER_32, ®);
565 err = mv88e6xxx_g1_read(chip, MV88E6XXX_G1_STATS_COUNTER_01, ®);
572 int mv88e6xxx_g1_stats_clear(struct mv88e6xxx_chip *chip)
577 err = mv88e6xxx_g1_read(chip, MV88E6XXX_G1_STATS_OP, &val);
581 /* Keep the histogram mode bits */
582 val &= MV88E6XXX_G1_STATS_OP_HIST_RX_TX;
583 val |= MV88E6XXX_G1_STATS_OP_BUSY | MV88E6XXX_G1_STATS_OP_FLUSH_ALL;
585 err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_STATS_OP, val);
589 /* Wait for the flush to complete. */
590 return mv88e6xxx_g1_stats_wait(chip);