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(struct mv88e6xxx_chip *chip, int reg, u16 mask)
32 return mv88e6xxx_wait(chip, chip->info->global1_addr, reg, mask);
35 /* Offset 0x00: Switch Global Status Register */
37 static int mv88e6185_g1_wait_ppu_disabled(struct mv88e6xxx_chip *chip)
42 for (i = 0; i < 16; i++) {
43 err = mv88e6xxx_g1_read(chip, MV88E6XXX_G1_STS, &state);
47 /* Check the value of the PPUState bits 15:14 */
48 state &= MV88E6185_G1_STS_PPU_STATE_MASK;
49 if (state != MV88E6185_G1_STS_PPU_STATE_POLLING)
52 usleep_range(1000, 2000);
58 static int mv88e6185_g1_wait_ppu_polling(struct mv88e6xxx_chip *chip)
63 for (i = 0; i < 16; ++i) {
64 err = mv88e6xxx_g1_read(chip, MV88E6XXX_G1_STS, &state);
68 /* Check the value of the PPUState bits 15:14 */
69 state &= MV88E6185_G1_STS_PPU_STATE_MASK;
70 if (state == MV88E6185_G1_STS_PPU_STATE_POLLING)
73 usleep_range(1000, 2000);
79 static int mv88e6352_g1_wait_ppu_polling(struct mv88e6xxx_chip *chip)
84 for (i = 0; i < 16; ++i) {
85 err = mv88e6xxx_g1_read(chip, MV88E6XXX_G1_STS, &state);
89 /* Check the value of the PPUState (or InitState) bit 15 */
90 if (state & MV88E6352_G1_STS_PPU_STATE)
93 usleep_range(1000, 2000);
99 static int mv88e6xxx_g1_wait_init_ready(struct mv88e6xxx_chip *chip)
101 const unsigned long timeout = jiffies + 1 * HZ;
105 /* Wait up to 1 second for the switch to be ready. The InitReady bit 11
106 * is set to a one when all units inside the device (ATU, VTU, etc.)
107 * have finished their initialization and are ready to accept frames.
109 while (time_before(jiffies, timeout)) {
110 err = mv88e6xxx_g1_read(chip, MV88E6XXX_G1_STS, &val);
114 if (val & MV88E6XXX_G1_STS_INIT_READY)
117 usleep_range(1000, 2000);
120 if (time_after(jiffies, timeout))
126 /* Offset 0x01: Switch MAC Address Register Bytes 0 & 1
127 * Offset 0x02: Switch MAC Address Register Bytes 2 & 3
128 * Offset 0x03: Switch MAC Address Register Bytes 4 & 5
130 int mv88e6xxx_g1_set_switch_mac(struct mv88e6xxx_chip *chip, u8 *addr)
135 reg = (addr[0] << 8) | addr[1];
136 err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_MAC_01, reg);
140 reg = (addr[2] << 8) | addr[3];
141 err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_MAC_23, reg);
145 reg = (addr[4] << 8) | addr[5];
146 err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_MAC_45, reg);
153 /* Offset 0x04: Switch Global Control Register */
155 int mv88e6185_g1_reset(struct mv88e6xxx_chip *chip)
160 /* Set the SWReset bit 15 along with the PPUEn bit 14, to also restart
161 * the PPU, including re-doing PHY detection and initialization
163 err = mv88e6xxx_g1_read(chip, MV88E6XXX_G1_CTL1, &val);
167 val |= MV88E6XXX_G1_CTL1_SW_RESET;
168 val |= MV88E6XXX_G1_CTL1_PPU_ENABLE;
170 err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_CTL1, val);
174 err = mv88e6xxx_g1_wait_init_ready(chip);
178 return mv88e6185_g1_wait_ppu_polling(chip);
181 int mv88e6250_g1_reset(struct mv88e6xxx_chip *chip)
186 /* Set the SWReset bit 15 */
187 err = mv88e6xxx_g1_read(chip, MV88E6XXX_G1_CTL1, &val);
191 val |= MV88E6XXX_G1_CTL1_SW_RESET;
193 err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_CTL1, val);
197 return mv88e6xxx_g1_wait_init_ready(chip);
200 int mv88e6352_g1_reset(struct mv88e6xxx_chip *chip)
204 err = mv88e6250_g1_reset(chip);
208 return mv88e6352_g1_wait_ppu_polling(chip);
211 int mv88e6185_g1_ppu_enable(struct mv88e6xxx_chip *chip)
216 err = mv88e6xxx_g1_read(chip, MV88E6XXX_G1_CTL1, &val);
220 val |= MV88E6XXX_G1_CTL1_PPU_ENABLE;
222 err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_CTL1, val);
226 return mv88e6185_g1_wait_ppu_polling(chip);
229 int mv88e6185_g1_ppu_disable(struct mv88e6xxx_chip *chip)
234 err = mv88e6xxx_g1_read(chip, MV88E6XXX_G1_CTL1, &val);
238 val &= ~MV88E6XXX_G1_CTL1_PPU_ENABLE;
240 err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_CTL1, val);
244 return mv88e6185_g1_wait_ppu_disabled(chip);
247 /* Offset 0x10: IP-PRI Mapping Register 0
248 * Offset 0x11: IP-PRI Mapping Register 1
249 * Offset 0x12: IP-PRI Mapping Register 2
250 * Offset 0x13: IP-PRI Mapping Register 3
251 * Offset 0x14: IP-PRI Mapping Register 4
252 * Offset 0x15: IP-PRI Mapping Register 5
253 * Offset 0x16: IP-PRI Mapping Register 6
254 * Offset 0x17: IP-PRI Mapping Register 7
257 int mv88e6085_g1_ip_pri_map(struct mv88e6xxx_chip *chip)
261 /* Reset the IP TOS/DiffServ/Traffic priorities to defaults */
262 err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_IP_PRI_0, 0x0000);
266 err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_IP_PRI_1, 0x0000);
270 err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_IP_PRI_2, 0x5555);
274 err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_IP_PRI_3, 0x5555);
278 err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_IP_PRI_4, 0xaaaa);
282 err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_IP_PRI_5, 0xaaaa);
286 err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_IP_PRI_6, 0xffff);
290 err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_IP_PRI_7, 0xffff);
297 /* Offset 0x18: IEEE-PRI Register */
299 int mv88e6085_g1_ieee_pri_map(struct mv88e6xxx_chip *chip)
301 /* Reset the IEEE Tag priorities to defaults */
302 return mv88e6xxx_g1_write(chip, MV88E6XXX_G1_IEEE_PRI, 0xfa41);
305 int mv88e6250_g1_ieee_pri_map(struct mv88e6xxx_chip *chip)
307 /* Reset the IEEE Tag priorities to defaults */
308 return mv88e6xxx_g1_write(chip, MV88E6XXX_G1_IEEE_PRI, 0xfa50);
311 /* Offset 0x1a: Monitor Control */
312 /* Offset 0x1a: Monitor & MGMT Control on some devices */
314 int mv88e6095_g1_set_egress_port(struct mv88e6xxx_chip *chip, int port)
319 err = mv88e6xxx_g1_read(chip, MV88E6185_G1_MONITOR_CTL, ®);
323 reg &= ~(MV88E6185_G1_MONITOR_CTL_INGRESS_DEST_MASK |
324 MV88E6185_G1_MONITOR_CTL_EGRESS_DEST_MASK);
326 reg |= port << __bf_shf(MV88E6185_G1_MONITOR_CTL_INGRESS_DEST_MASK) |
327 port << __bf_shf(MV88E6185_G1_MONITOR_CTL_EGRESS_DEST_MASK);
329 return mv88e6xxx_g1_write(chip, MV88E6185_G1_MONITOR_CTL, reg);
332 /* Older generations also call this the ARP destination. It has been
333 * generalized in more modern devices such that more than ARP can
336 int mv88e6095_g1_set_cpu_port(struct mv88e6xxx_chip *chip, int port)
341 err = mv88e6xxx_g1_read(chip, MV88E6185_G1_MONITOR_CTL, ®);
345 reg &= ~MV88E6185_G1_MONITOR_CTL_ARP_DEST_MASK;
346 reg |= port << __bf_shf(MV88E6185_G1_MONITOR_CTL_ARP_DEST_MASK);
348 return mv88e6xxx_g1_write(chip, MV88E6185_G1_MONITOR_CTL, reg);
351 static int mv88e6390_g1_monitor_write(struct mv88e6xxx_chip *chip,
352 u16 pointer, u8 data)
356 reg = MV88E6390_G1_MONITOR_MGMT_CTL_UPDATE | pointer | data;
358 return mv88e6xxx_g1_write(chip, MV88E6390_G1_MONITOR_MGMT_CTL, reg);
361 int mv88e6390_g1_set_egress_port(struct mv88e6xxx_chip *chip, int port)
366 ptr = MV88E6390_G1_MONITOR_MGMT_CTL_PTR_INGRESS_DEST;
367 err = mv88e6390_g1_monitor_write(chip, ptr, port);
371 ptr = MV88E6390_G1_MONITOR_MGMT_CTL_PTR_EGRESS_DEST;
372 err = mv88e6390_g1_monitor_write(chip, ptr, port);
379 int mv88e6390_g1_set_cpu_port(struct mv88e6xxx_chip *chip, int port)
381 u16 ptr = MV88E6390_G1_MONITOR_MGMT_CTL_PTR_CPU_DEST;
383 return mv88e6390_g1_monitor_write(chip, ptr, port);
386 int mv88e6390_g1_mgmt_rsvd2cpu(struct mv88e6xxx_chip *chip)
391 /* 01:80:c2:00:00:00-01:80:c2:00:00:07 are Management */
392 ptr = MV88E6390_G1_MONITOR_MGMT_CTL_PTR_0180C200000XLO;
393 err = mv88e6390_g1_monitor_write(chip, ptr, 0xff);
397 /* 01:80:c2:00:00:08-01:80:c2:00:00:0f are Management */
398 ptr = MV88E6390_G1_MONITOR_MGMT_CTL_PTR_0180C200000XHI;
399 err = mv88e6390_g1_monitor_write(chip, ptr, 0xff);
403 /* 01:80:c2:00:00:20-01:80:c2:00:00:27 are Management */
404 ptr = MV88E6390_G1_MONITOR_MGMT_CTL_PTR_0180C200002XLO;
405 err = mv88e6390_g1_monitor_write(chip, ptr, 0xff);
409 /* 01:80:c2:00:00:28-01:80:c2:00:00:2f are Management */
410 ptr = MV88E6390_G1_MONITOR_MGMT_CTL_PTR_0180C200002XHI;
411 err = mv88e6390_g1_monitor_write(chip, ptr, 0xff);
418 /* Offset 0x1c: Global Control 2 */
420 static int mv88e6xxx_g1_ctl2_mask(struct mv88e6xxx_chip *chip, u16 mask,
426 err = mv88e6xxx_g1_read(chip, MV88E6XXX_G1_CTL2, ®);
433 return mv88e6xxx_g1_write(chip, MV88E6XXX_G1_CTL2, reg);
436 int mv88e6185_g1_set_cascade_port(struct mv88e6xxx_chip *chip, int port)
438 const u16 mask = MV88E6185_G1_CTL2_CASCADE_PORT_MASK;
440 return mv88e6xxx_g1_ctl2_mask(chip, mask, port << __bf_shf(mask));
443 int mv88e6085_g1_rmu_disable(struct mv88e6xxx_chip *chip)
445 return mv88e6xxx_g1_ctl2_mask(chip, MV88E6085_G1_CTL2_P10RM |
446 MV88E6085_G1_CTL2_RM_ENABLE, 0);
449 int mv88e6352_g1_rmu_disable(struct mv88e6xxx_chip *chip)
451 return mv88e6xxx_g1_ctl2_mask(chip, MV88E6352_G1_CTL2_RMU_MODE_MASK,
452 MV88E6352_G1_CTL2_RMU_MODE_DISABLED);
455 int mv88e6390_g1_rmu_disable(struct mv88e6xxx_chip *chip)
457 return mv88e6xxx_g1_ctl2_mask(chip, MV88E6390_G1_CTL2_RMU_MODE_MASK,
458 MV88E6390_G1_CTL2_RMU_MODE_DISABLED);
461 int mv88e6390_g1_stats_set_histogram(struct mv88e6xxx_chip *chip)
463 return mv88e6xxx_g1_ctl2_mask(chip, MV88E6390_G1_CTL2_HIST_MODE_MASK,
464 MV88E6390_G1_CTL2_HIST_MODE_RX |
465 MV88E6390_G1_CTL2_HIST_MODE_TX);
468 int mv88e6xxx_g1_set_device_number(struct mv88e6xxx_chip *chip, int index)
470 return mv88e6xxx_g1_ctl2_mask(chip,
471 MV88E6XXX_G1_CTL2_DEVICE_NUMBER_MASK,
475 /* Offset 0x1d: Statistics Operation 2 */
477 static int mv88e6xxx_g1_stats_wait(struct mv88e6xxx_chip *chip)
479 return mv88e6xxx_g1_wait(chip, MV88E6XXX_G1_STATS_OP,
480 MV88E6XXX_G1_STATS_OP_BUSY);
483 int mv88e6095_g1_stats_set_histogram(struct mv88e6xxx_chip *chip)
488 err = mv88e6xxx_g1_read(chip, MV88E6XXX_G1_STATS_OP, &val);
492 val |= MV88E6XXX_G1_STATS_OP_HIST_RX_TX;
494 err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_STATS_OP, val);
499 int mv88e6xxx_g1_stats_snapshot(struct mv88e6xxx_chip *chip, int port)
503 /* Snapshot the hardware statistics counters for this port. */
504 err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_STATS_OP,
505 MV88E6XXX_G1_STATS_OP_BUSY |
506 MV88E6XXX_G1_STATS_OP_CAPTURE_PORT |
507 MV88E6XXX_G1_STATS_OP_HIST_RX_TX | port);
511 /* Wait for the snapshotting to complete. */
512 return mv88e6xxx_g1_stats_wait(chip);
515 int mv88e6320_g1_stats_snapshot(struct mv88e6xxx_chip *chip, int port)
517 port = (port + 1) << 5;
519 return mv88e6xxx_g1_stats_snapshot(chip, port);
522 int mv88e6390_g1_stats_snapshot(struct mv88e6xxx_chip *chip, int port)
526 port = (port + 1) << 5;
528 /* Snapshot the hardware statistics counters for this port. */
529 err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_STATS_OP,
530 MV88E6XXX_G1_STATS_OP_BUSY |
531 MV88E6XXX_G1_STATS_OP_CAPTURE_PORT | port);
535 /* Wait for the snapshotting to complete. */
536 return mv88e6xxx_g1_stats_wait(chip);
539 void mv88e6xxx_g1_stats_read(struct mv88e6xxx_chip *chip, int stat, u32 *val)
547 err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_STATS_OP,
548 MV88E6XXX_G1_STATS_OP_BUSY |
549 MV88E6XXX_G1_STATS_OP_READ_CAPTURED | stat);
553 err = mv88e6xxx_g1_stats_wait(chip);
557 err = mv88e6xxx_g1_read(chip, MV88E6XXX_G1_STATS_COUNTER_32, ®);
563 err = mv88e6xxx_g1_read(chip, MV88E6XXX_G1_STATS_COUNTER_01, ®);
570 int mv88e6xxx_g1_stats_clear(struct mv88e6xxx_chip *chip)
575 err = mv88e6xxx_g1_read(chip, MV88E6XXX_G1_STATS_OP, &val);
579 /* Keep the histogram mode bits */
580 val &= MV88E6XXX_G1_STATS_OP_HIST_RX_TX;
581 val |= MV88E6XXX_G1_STATS_OP_BUSY | MV88E6XXX_G1_STATS_OP_FLUSH_ALL;
583 err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_STATS_OP, val);
587 /* Wait for the flush to complete. */
588 return mv88e6xxx_g1_stats_wait(chip);