1 // SPDX-License-Identifier: GPL-2.0-only
5 #include <linux/kernel.h>
6 #include <linux/module.h>
7 #include <linux/gpio/consumer.h>
8 #include <linux/regmap.h>
9 #include <linux/mutex.h>
10 #include <linux/mii.h>
12 #include <linux/phy.h>
13 #include <linux/if_bridge.h>
14 #include <linux/if_vlan.h>
15 #include <linux/etherdevice.h>
19 /* For the LAN9303 and LAN9354, only port 0 is an XMII port. */
20 #define IS_PORT_XMII(port) ((port) == 0)
22 #define LAN9303_NUM_PORTS 3
24 /* 13.2 System Control and Status Registers
25 * Multiply register number by 4 to get address offset.
27 #define LAN9303_CHIP_REV 0x14
28 # define LAN9303_CHIP_ID 0x9303
29 # define LAN9352_CHIP_ID 0x9352
30 # define LAN9353_CHIP_ID 0x9353
31 # define LAN9354_CHIP_ID 0x9354
32 # define LAN9355_CHIP_ID 0x9355
33 #define LAN9303_IRQ_CFG 0x15
34 # define LAN9303_IRQ_CFG_IRQ_ENABLE BIT(8)
35 # define LAN9303_IRQ_CFG_IRQ_POL BIT(4)
36 # define LAN9303_IRQ_CFG_IRQ_TYPE BIT(0)
37 #define LAN9303_INT_STS 0x16
38 # define LAN9303_INT_STS_PHY_INT2 BIT(27)
39 # define LAN9303_INT_STS_PHY_INT1 BIT(26)
40 #define LAN9303_INT_EN 0x17
41 # define LAN9303_INT_EN_PHY_INT2_EN BIT(27)
42 # define LAN9303_INT_EN_PHY_INT1_EN BIT(26)
43 #define LAN9303_BYTE_ORDER 0x19
44 #define LAN9303_HW_CFG 0x1D
45 # define LAN9303_HW_CFG_READY BIT(27)
46 # define LAN9303_HW_CFG_AMDX_EN_PORT2 BIT(26)
47 # define LAN9303_HW_CFG_AMDX_EN_PORT1 BIT(25)
48 #define LAN9303_PMI_DATA 0x29
49 #define LAN9303_PMI_ACCESS 0x2A
50 # define LAN9303_PMI_ACCESS_PHY_ADDR(x) (((x) & 0x1f) << 11)
51 # define LAN9303_PMI_ACCESS_MIIRINDA(x) (((x) & 0x1f) << 6)
52 # define LAN9303_PMI_ACCESS_MII_BUSY BIT(0)
53 # define LAN9303_PMI_ACCESS_MII_WRITE BIT(1)
54 #define LAN9303_MANUAL_FC_1 0x68
55 #define LAN9303_MANUAL_FC_2 0x69
56 #define LAN9303_MANUAL_FC_0 0x6a
57 # define LAN9303_BP_EN BIT(6)
58 # define LAN9303_RX_FC_EN BIT(2)
59 # define LAN9303_TX_FC_EN BIT(1)
60 #define LAN9303_SWITCH_CSR_DATA 0x6b
61 #define LAN9303_SWITCH_CSR_CMD 0x6c
62 #define LAN9303_SWITCH_CSR_CMD_BUSY BIT(31)
63 #define LAN9303_SWITCH_CSR_CMD_RW BIT(30)
64 #define LAN9303_SWITCH_CSR_CMD_LANES (BIT(19) | BIT(18) | BIT(17) | BIT(16))
65 #define LAN9303_VIRT_PHY_BASE 0x70
66 #define LAN9303_VIRT_SPECIAL_CTRL 0x77
67 #define LAN9303_VIRT_SPECIAL_TURBO BIT(10) /*Turbo MII Enable*/
69 /*13.4 Switch Fabric Control and Status Registers
70 * Accessed indirectly via SWITCH_CSR_CMD, SWITCH_CSR_DATA.
72 #define LAN9303_SW_DEV_ID 0x0000
73 #define LAN9303_SW_RESET 0x0001
74 #define LAN9303_SW_RESET_RESET BIT(0)
75 #define LAN9303_SW_IMR 0x0004
76 #define LAN9303_SW_IPR 0x0005
77 #define LAN9303_MAC_VER_ID_0 0x0400
78 #define LAN9303_MAC_RX_CFG_0 0x0401
79 # define LAN9303_MAC_RX_CFG_X_REJECT_MAC_TYPES BIT(1)
80 # define LAN9303_MAC_RX_CFG_X_RX_ENABLE BIT(0)
81 #define LAN9303_MAC_RX_UNDSZE_CNT_0 0x0410
82 #define LAN9303_MAC_RX_64_CNT_0 0x0411
83 #define LAN9303_MAC_RX_127_CNT_0 0x0412
84 #define LAN9303_MAC_RX_255_CNT_0 0x413
85 #define LAN9303_MAC_RX_511_CNT_0 0x0414
86 #define LAN9303_MAC_RX_1023_CNT_0 0x0415
87 #define LAN9303_MAC_RX_MAX_CNT_0 0x0416
88 #define LAN9303_MAC_RX_OVRSZE_CNT_0 0x0417
89 #define LAN9303_MAC_RX_PKTOK_CNT_0 0x0418
90 #define LAN9303_MAC_RX_CRCERR_CNT_0 0x0419
91 #define LAN9303_MAC_RX_MULCST_CNT_0 0x041a
92 #define LAN9303_MAC_RX_BRDCST_CNT_0 0x041b
93 #define LAN9303_MAC_RX_PAUSE_CNT_0 0x041c
94 #define LAN9303_MAC_RX_FRAG_CNT_0 0x041d
95 #define LAN9303_MAC_RX_JABB_CNT_0 0x041e
96 #define LAN9303_MAC_RX_ALIGN_CNT_0 0x041f
97 #define LAN9303_MAC_RX_PKTLEN_CNT_0 0x0420
98 #define LAN9303_MAC_RX_GOODPKTLEN_CNT_0 0x0421
99 #define LAN9303_MAC_RX_SYMBL_CNT_0 0x0422
100 #define LAN9303_MAC_RX_CTLFRM_CNT_0 0x0423
102 #define LAN9303_MAC_TX_CFG_0 0x0440
103 # define LAN9303_MAC_TX_CFG_X_TX_IFG_CONFIG_DEFAULT (21 << 2)
104 # define LAN9303_MAC_TX_CFG_X_TX_PAD_ENABLE BIT(1)
105 # define LAN9303_MAC_TX_CFG_X_TX_ENABLE BIT(0)
106 #define LAN9303_MAC_TX_DEFER_CNT_0 0x0451
107 #define LAN9303_MAC_TX_PAUSE_CNT_0 0x0452
108 #define LAN9303_MAC_TX_PKTOK_CNT_0 0x0453
109 #define LAN9303_MAC_TX_64_CNT_0 0x0454
110 #define LAN9303_MAC_TX_127_CNT_0 0x0455
111 #define LAN9303_MAC_TX_255_CNT_0 0x0456
112 #define LAN9303_MAC_TX_511_CNT_0 0x0457
113 #define LAN9303_MAC_TX_1023_CNT_0 0x0458
114 #define LAN9303_MAC_TX_MAX_CNT_0 0x0459
115 #define LAN9303_MAC_TX_UNDSZE_CNT_0 0x045a
116 #define LAN9303_MAC_TX_PKTLEN_CNT_0 0x045c
117 #define LAN9303_MAC_TX_BRDCST_CNT_0 0x045d
118 #define LAN9303_MAC_TX_MULCST_CNT_0 0x045e
119 #define LAN9303_MAC_TX_LATECOL_0 0x045f
120 #define LAN9303_MAC_TX_EXCOL_CNT_0 0x0460
121 #define LAN9303_MAC_TX_SNGLECOL_CNT_0 0x0461
122 #define LAN9303_MAC_TX_MULTICOL_CNT_0 0x0462
123 #define LAN9303_MAC_TX_TOTALCOL_CNT_0 0x0463
125 #define LAN9303_MAC_VER_ID_1 0x0800
126 #define LAN9303_MAC_RX_CFG_1 0x0801
127 #define LAN9303_MAC_TX_CFG_1 0x0840
128 #define LAN9303_MAC_VER_ID_2 0x0c00
129 #define LAN9303_MAC_RX_CFG_2 0x0c01
130 #define LAN9303_MAC_TX_CFG_2 0x0c40
131 #define LAN9303_SWE_ALR_CMD 0x1800
132 # define LAN9303_ALR_CMD_MAKE_ENTRY BIT(2)
133 # define LAN9303_ALR_CMD_GET_FIRST BIT(1)
134 # define LAN9303_ALR_CMD_GET_NEXT BIT(0)
135 #define LAN9303_SWE_ALR_WR_DAT_0 0x1801
136 #define LAN9303_SWE_ALR_WR_DAT_1 0x1802
137 # define LAN9303_ALR_DAT1_VALID BIT(26)
138 # define LAN9303_ALR_DAT1_END_OF_TABL BIT(25)
139 # define LAN9303_ALR_DAT1_AGE_OVERRID BIT(25)
140 # define LAN9303_ALR_DAT1_STATIC BIT(24)
141 # define LAN9303_ALR_DAT1_PORT_BITOFFS 16
142 # define LAN9303_ALR_DAT1_PORT_MASK (7 << LAN9303_ALR_DAT1_PORT_BITOFFS)
143 #define LAN9303_SWE_ALR_RD_DAT_0 0x1805
144 #define LAN9303_SWE_ALR_RD_DAT_1 0x1806
145 #define LAN9303_SWE_ALR_CMD_STS 0x1808
146 # define ALR_STS_MAKE_PEND BIT(0)
147 #define LAN9303_SWE_VLAN_CMD 0x180b
148 # define LAN9303_SWE_VLAN_CMD_RNW BIT(5)
149 # define LAN9303_SWE_VLAN_CMD_PVIDNVLAN BIT(4)
150 #define LAN9303_SWE_VLAN_WR_DATA 0x180c
151 #define LAN9303_SWE_VLAN_RD_DATA 0x180e
152 # define LAN9303_SWE_VLAN_MEMBER_PORT2 BIT(17)
153 # define LAN9303_SWE_VLAN_UNTAG_PORT2 BIT(16)
154 # define LAN9303_SWE_VLAN_MEMBER_PORT1 BIT(15)
155 # define LAN9303_SWE_VLAN_UNTAG_PORT1 BIT(14)
156 # define LAN9303_SWE_VLAN_MEMBER_PORT0 BIT(13)
157 # define LAN9303_SWE_VLAN_UNTAG_PORT0 BIT(12)
158 #define LAN9303_SWE_VLAN_CMD_STS 0x1810
159 #define LAN9303_SWE_GLB_INGRESS_CFG 0x1840
160 # define LAN9303_SWE_GLB_INGR_IGMP_TRAP BIT(7)
161 # define LAN9303_SWE_GLB_INGR_IGMP_PORT(p) BIT(10 + p)
162 #define LAN9303_SWE_PORT_STATE 0x1843
163 # define LAN9303_SWE_PORT_STATE_FORWARDING_PORT2 (0)
164 # define LAN9303_SWE_PORT_STATE_LEARNING_PORT2 BIT(5)
165 # define LAN9303_SWE_PORT_STATE_BLOCKING_PORT2 BIT(4)
166 # define LAN9303_SWE_PORT_STATE_FORWARDING_PORT1 (0)
167 # define LAN9303_SWE_PORT_STATE_LEARNING_PORT1 BIT(3)
168 # define LAN9303_SWE_PORT_STATE_BLOCKING_PORT1 BIT(2)
169 # define LAN9303_SWE_PORT_STATE_FORWARDING_PORT0 (0)
170 # define LAN9303_SWE_PORT_STATE_LEARNING_PORT0 BIT(1)
171 # define LAN9303_SWE_PORT_STATE_BLOCKING_PORT0 BIT(0)
172 # define LAN9303_SWE_PORT_STATE_DISABLED_PORT0 (3)
173 #define LAN9303_SWE_PORT_MIRROR 0x1846
174 # define LAN9303_SWE_PORT_MIRROR_SNIFF_ALL BIT(8)
175 # define LAN9303_SWE_PORT_MIRROR_SNIFFER_PORT2 BIT(7)
176 # define LAN9303_SWE_PORT_MIRROR_SNIFFER_PORT1 BIT(6)
177 # define LAN9303_SWE_PORT_MIRROR_SNIFFER_PORT0 BIT(5)
178 # define LAN9303_SWE_PORT_MIRROR_MIRRORED_PORT2 BIT(4)
179 # define LAN9303_SWE_PORT_MIRROR_MIRRORED_PORT1 BIT(3)
180 # define LAN9303_SWE_PORT_MIRROR_MIRRORED_PORT0 BIT(2)
181 # define LAN9303_SWE_PORT_MIRROR_ENABLE_RX_MIRRORING BIT(1)
182 # define LAN9303_SWE_PORT_MIRROR_ENABLE_TX_MIRRORING BIT(0)
183 # define LAN9303_SWE_PORT_MIRROR_DISABLED 0
184 #define LAN9303_SWE_INGRESS_PORT_TYPE 0x1847
185 #define LAN9303_SWE_INGRESS_PORT_TYPE_VLAN 3
186 #define LAN9303_BM_CFG 0x1c00
187 #define LAN9303_BM_EGRSS_PORT_TYPE 0x1c0c
188 # define LAN9303_BM_EGRSS_PORT_TYPE_SPECIAL_TAG_PORT2 (BIT(17) | BIT(16))
189 # define LAN9303_BM_EGRSS_PORT_TYPE_SPECIAL_TAG_PORT1 (BIT(9) | BIT(8))
190 # define LAN9303_BM_EGRSS_PORT_TYPE_SPECIAL_TAG_PORT0 (BIT(1) | BIT(0))
192 #define LAN9303_SWITCH_PORT_REG(port, reg0) (0x400 * (port) + (reg0))
194 /* the built-in PHYs are of type LAN911X */
195 #define MII_LAN911X_SPECIAL_MODES 0x12
196 #define MII_LAN911X_SPECIAL_CONTROL_STATUS 0x1f
198 static const struct regmap_range lan9303_valid_regs[] = {
199 regmap_reg_range(0x14, 0x17), /* misc, interrupt */
200 regmap_reg_range(0x19, 0x19), /* endian test */
201 regmap_reg_range(0x1d, 0x1d), /* hardware config */
202 regmap_reg_range(0x23, 0x24), /* general purpose timer */
203 regmap_reg_range(0x27, 0x27), /* counter */
204 regmap_reg_range(0x29, 0x2a), /* PMI index regs */
205 regmap_reg_range(0x68, 0x6a), /* flow control */
206 regmap_reg_range(0x6b, 0x6c), /* switch fabric indirect regs */
207 regmap_reg_range(0x6d, 0x6f), /* misc */
208 regmap_reg_range(0x70, 0x77), /* virtual phy */
209 regmap_reg_range(0x78, 0x7a), /* GPIO */
210 regmap_reg_range(0x7c, 0x7e), /* MAC & reset */
211 regmap_reg_range(0x80, 0xb7), /* switch fabric direct regs (wr only) */
214 static const struct regmap_range lan9303_reserved_ranges[] = {
215 regmap_reg_range(0x00, 0x13),
216 regmap_reg_range(0x18, 0x18),
217 regmap_reg_range(0x1a, 0x1c),
218 regmap_reg_range(0x1e, 0x22),
219 regmap_reg_range(0x25, 0x26),
220 regmap_reg_range(0x28, 0x28),
221 regmap_reg_range(0x2b, 0x67),
222 regmap_reg_range(0x7b, 0x7b),
223 regmap_reg_range(0x7f, 0x7f),
224 regmap_reg_range(0xb8, 0xff),
227 const struct regmap_access_table lan9303_register_set = {
228 .yes_ranges = lan9303_valid_regs,
229 .n_yes_ranges = ARRAY_SIZE(lan9303_valid_regs),
230 .no_ranges = lan9303_reserved_ranges,
231 .n_no_ranges = ARRAY_SIZE(lan9303_reserved_ranges),
233 EXPORT_SYMBOL(lan9303_register_set);
235 /* Flow Control registers indexed by port number */
236 static unsigned int flow_ctl_reg[] = {
242 static int lan9303_read(struct regmap *regmap, unsigned int offset, u32 *reg)
246 /* we can lose arbitration for the I2C case, because the device
247 * tries to detect and read an external EEPROM after reset and acts as
248 * a master on the shared I2C bus itself. This conflicts with our
249 * attempts to access the device as a slave at the same moment.
251 for (i = 0; i < 5; i++) {
252 ret = regmap_read(regmap, offset, reg);
263 static int lan9303_read_wait(struct lan9303 *chip, int offset, u32 mask)
267 for (i = 0; i < 25; i++) {
271 ret = lan9303_read(chip->regmap, offset, ®);
273 dev_err(chip->dev, "%s failed to read offset %d: %d\n",
274 __func__, offset, ret);
279 usleep_range(1000, 2000);
285 static int lan9303_virt_phy_reg_read(struct lan9303 *chip, int regnum)
290 if (regnum > MII_EXPANSION)
293 ret = lan9303_read(chip->regmap, LAN9303_VIRT_PHY_BASE + regnum, &val);
300 static int lan9303_virt_phy_reg_write(struct lan9303 *chip, int regnum, u16 val)
302 if (regnum > MII_EXPANSION)
305 return regmap_write(chip->regmap, LAN9303_VIRT_PHY_BASE + regnum, val);
308 static int lan9303_indirect_phy_wait_for_completion(struct lan9303 *chip)
310 return lan9303_read_wait(chip, LAN9303_PMI_ACCESS,
311 LAN9303_PMI_ACCESS_MII_BUSY);
314 static int lan9303_indirect_phy_read(struct lan9303 *chip, int addr, int regnum)
319 val = LAN9303_PMI_ACCESS_PHY_ADDR(addr);
320 val |= LAN9303_PMI_ACCESS_MIIRINDA(regnum);
322 mutex_lock(&chip->indirect_mutex);
324 ret = lan9303_indirect_phy_wait_for_completion(chip);
328 /* start the MII read cycle */
329 ret = regmap_write(chip->regmap, LAN9303_PMI_ACCESS, val);
333 ret = lan9303_indirect_phy_wait_for_completion(chip);
337 /* read the result of this operation */
338 ret = lan9303_read(chip->regmap, LAN9303_PMI_DATA, &val);
342 mutex_unlock(&chip->indirect_mutex);
347 mutex_unlock(&chip->indirect_mutex);
351 static int lan9303_indirect_phy_write(struct lan9303 *chip, int addr,
357 reg = LAN9303_PMI_ACCESS_PHY_ADDR(addr);
358 reg |= LAN9303_PMI_ACCESS_MIIRINDA(regnum);
359 reg |= LAN9303_PMI_ACCESS_MII_WRITE;
361 mutex_lock(&chip->indirect_mutex);
363 ret = lan9303_indirect_phy_wait_for_completion(chip);
367 /* write the data first... */
368 ret = regmap_write(chip->regmap, LAN9303_PMI_DATA, val);
372 /* ...then start the MII write cycle */
373 ret = regmap_write(chip->regmap, LAN9303_PMI_ACCESS, reg);
376 mutex_unlock(&chip->indirect_mutex);
380 const struct lan9303_phy_ops lan9303_indirect_phy_ops = {
381 .phy_read = lan9303_indirect_phy_read,
382 .phy_write = lan9303_indirect_phy_write,
384 EXPORT_SYMBOL_GPL(lan9303_indirect_phy_ops);
386 static int lan9303_switch_wait_for_completion(struct lan9303 *chip)
388 return lan9303_read_wait(chip, LAN9303_SWITCH_CSR_CMD,
389 LAN9303_SWITCH_CSR_CMD_BUSY);
392 static int lan9303_write_switch_reg(struct lan9303 *chip, u16 regnum, u32 val)
398 reg |= LAN9303_SWITCH_CSR_CMD_LANES;
399 reg |= LAN9303_SWITCH_CSR_CMD_BUSY;
401 mutex_lock(&chip->indirect_mutex);
403 ret = lan9303_switch_wait_for_completion(chip);
407 ret = regmap_write(chip->regmap, LAN9303_SWITCH_CSR_DATA, val);
409 dev_err(chip->dev, "Failed to write csr data reg: %d\n", ret);
414 ret = regmap_write(chip->regmap, LAN9303_SWITCH_CSR_CMD, reg);
416 dev_err(chip->dev, "Failed to write csr command reg: %d\n",
420 mutex_unlock(&chip->indirect_mutex);
424 static int lan9303_read_switch_reg(struct lan9303 *chip, u16 regnum, u32 *val)
430 reg |= LAN9303_SWITCH_CSR_CMD_LANES;
431 reg |= LAN9303_SWITCH_CSR_CMD_RW;
432 reg |= LAN9303_SWITCH_CSR_CMD_BUSY;
434 mutex_lock(&chip->indirect_mutex);
436 ret = lan9303_switch_wait_for_completion(chip);
441 ret = regmap_write(chip->regmap, LAN9303_SWITCH_CSR_CMD, reg);
443 dev_err(chip->dev, "Failed to write csr command reg: %d\n",
448 ret = lan9303_switch_wait_for_completion(chip);
452 ret = lan9303_read(chip->regmap, LAN9303_SWITCH_CSR_DATA, val);
454 dev_err(chip->dev, "Failed to read csr data reg: %d\n", ret);
456 mutex_unlock(&chip->indirect_mutex);
460 static int lan9303_write_switch_reg_mask(struct lan9303 *chip, u16 regnum,
466 ret = lan9303_read_switch_reg(chip, regnum, ®);
470 reg = (reg & ~mask) | val;
472 return lan9303_write_switch_reg(chip, regnum, reg);
475 static int lan9303_write_switch_port(struct lan9303 *chip, int port,
478 return lan9303_write_switch_reg(
479 chip, LAN9303_SWITCH_PORT_REG(port, regnum), val);
482 static int lan9303_read_switch_port(struct lan9303 *chip, int port,
483 u16 regnum, u32 *val)
485 return lan9303_read_switch_reg(
486 chip, LAN9303_SWITCH_PORT_REG(port, regnum), val);
489 static int lan9303_detect_phy_setup(struct lan9303 *chip)
493 /* Calculate chip->phy_addr_base:
494 * Depending on the 'phy_addr_sel_strap' setting, the three phys are
495 * using IDs 0-1-2 or IDs 1-2-3. We cannot read back the
496 * 'phy_addr_sel_strap' setting directly, so we need a test, which
497 * configuration is active:
498 * Special reg 18 of phy 3 reads as 0x0000, if 'phy_addr_sel_strap' is 0
499 * and the IDs are 0-1-2, else it contains something different from
500 * 0x0000, which means 'phy_addr_sel_strap' is 1 and the IDs are 1-2-3.
501 * 0xffff is returned on MDIO read with no response.
503 reg = chip->ops->phy_read(chip, 3, MII_LAN911X_SPECIAL_MODES);
505 dev_err(chip->dev, "Failed to detect phy config: %d\n", reg);
509 chip->phy_addr_base = reg != 0 && reg != 0xffff;
511 dev_dbg(chip->dev, "Phy setup '%s' detected\n",
512 chip->phy_addr_base ? "1-2-3" : "0-1-2");
517 /* Map ALR-port bits to port bitmap, and back */
518 static const int alrport_2_portmap[] = {1, 2, 4, 0, 3, 5, 6, 7 };
519 static const int portmap_2_alrport[] = {3, 0, 1, 4, 2, 5, 6, 7 };
521 /* Return pointer to first free ALR cache entry, return NULL if none */
522 static struct lan9303_alr_cache_entry *
523 lan9303_alr_cache_find_free(struct lan9303 *chip)
526 struct lan9303_alr_cache_entry *entr = chip->alr_cache;
528 for (i = 0; i < LAN9303_NUM_ALR_RECORDS; i++, entr++)
529 if (entr->port_map == 0)
535 /* Return pointer to ALR cache entry matching MAC address */
536 static struct lan9303_alr_cache_entry *
537 lan9303_alr_cache_find_mac(struct lan9303 *chip, const u8 *mac_addr)
540 struct lan9303_alr_cache_entry *entr = chip->alr_cache;
542 BUILD_BUG_ON_MSG(sizeof(struct lan9303_alr_cache_entry) & 1,
543 "ether_addr_equal require u16 alignment");
545 for (i = 0; i < LAN9303_NUM_ALR_RECORDS; i++, entr++)
546 if (ether_addr_equal(entr->mac_addr, mac_addr))
552 static int lan9303_csr_reg_wait(struct lan9303 *chip, int regno, u32 mask)
556 for (i = 0; i < 25; i++) {
559 lan9303_read_switch_reg(chip, regno, ®);
562 usleep_range(1000, 2000);
568 static int lan9303_alr_make_entry_raw(struct lan9303 *chip, u32 dat0, u32 dat1)
570 lan9303_write_switch_reg(chip, LAN9303_SWE_ALR_WR_DAT_0, dat0);
571 lan9303_write_switch_reg(chip, LAN9303_SWE_ALR_WR_DAT_1, dat1);
572 lan9303_write_switch_reg(chip, LAN9303_SWE_ALR_CMD,
573 LAN9303_ALR_CMD_MAKE_ENTRY);
574 lan9303_csr_reg_wait(chip, LAN9303_SWE_ALR_CMD_STS, ALR_STS_MAKE_PEND);
575 lan9303_write_switch_reg(chip, LAN9303_SWE_ALR_CMD, 0);
580 typedef int alr_loop_cb_t(struct lan9303 *chip, u32 dat0, u32 dat1,
581 int portmap, void *ctx);
583 static int lan9303_alr_loop(struct lan9303 *chip, alr_loop_cb_t *cb, void *ctx)
587 mutex_lock(&chip->alr_mutex);
588 lan9303_write_switch_reg(chip, LAN9303_SWE_ALR_CMD,
589 LAN9303_ALR_CMD_GET_FIRST);
590 lan9303_write_switch_reg(chip, LAN9303_SWE_ALR_CMD, 0);
592 for (i = 1; i < LAN9303_NUM_ALR_RECORDS; i++) {
594 int alrport, portmap;
596 lan9303_read_switch_reg(chip, LAN9303_SWE_ALR_RD_DAT_0, &dat0);
597 lan9303_read_switch_reg(chip, LAN9303_SWE_ALR_RD_DAT_1, &dat1);
598 if (dat1 & LAN9303_ALR_DAT1_END_OF_TABL)
601 alrport = (dat1 & LAN9303_ALR_DAT1_PORT_MASK) >>
602 LAN9303_ALR_DAT1_PORT_BITOFFS;
603 portmap = alrport_2_portmap[alrport];
605 ret = cb(chip, dat0, dat1, portmap, ctx);
609 lan9303_write_switch_reg(chip, LAN9303_SWE_ALR_CMD,
610 LAN9303_ALR_CMD_GET_NEXT);
611 lan9303_write_switch_reg(chip, LAN9303_SWE_ALR_CMD, 0);
613 mutex_unlock(&chip->alr_mutex);
618 static void alr_reg_to_mac(u32 dat0, u32 dat1, u8 mac[6])
620 mac[0] = (dat0 >> 0) & 0xff;
621 mac[1] = (dat0 >> 8) & 0xff;
622 mac[2] = (dat0 >> 16) & 0xff;
623 mac[3] = (dat0 >> 24) & 0xff;
624 mac[4] = (dat1 >> 0) & 0xff;
625 mac[5] = (dat1 >> 8) & 0xff;
628 struct del_port_learned_ctx {
632 /* Clear learned (non-static) entry on given port */
633 static int alr_loop_cb_del_port_learned(struct lan9303 *chip, u32 dat0,
634 u32 dat1, int portmap, void *ctx)
636 struct del_port_learned_ctx *del_ctx = ctx;
637 int port = del_ctx->port;
639 if (((BIT(port) & portmap) == 0) || (dat1 & LAN9303_ALR_DAT1_STATIC))
642 /* learned entries has only one port, we can just delete */
643 dat1 &= ~LAN9303_ALR_DAT1_VALID; /* delete entry */
644 lan9303_alr_make_entry_raw(chip, dat0, dat1);
649 struct port_fdb_dump_ctx {
652 dsa_fdb_dump_cb_t *cb;
655 static int alr_loop_cb_fdb_port_dump(struct lan9303 *chip, u32 dat0,
656 u32 dat1, int portmap, void *ctx)
658 struct port_fdb_dump_ctx *dump_ctx = ctx;
662 if ((BIT(dump_ctx->port) & portmap) == 0)
665 alr_reg_to_mac(dat0, dat1, mac);
666 is_static = !!(dat1 & LAN9303_ALR_DAT1_STATIC);
667 return dump_ctx->cb(mac, 0, is_static, dump_ctx->data);
670 /* Set a static ALR entry. Delete entry if port_map is zero */
671 static void lan9303_alr_set_entry(struct lan9303 *chip, const u8 *mac,
672 u8 port_map, bool stp_override)
674 u32 dat0, dat1, alr_port;
676 dev_dbg(chip->dev, "%s(%pM, %d)\n", __func__, mac, port_map);
677 dat1 = LAN9303_ALR_DAT1_STATIC;
679 dat1 |= LAN9303_ALR_DAT1_VALID;
680 /* otherwise no ports: delete entry */
682 dat1 |= LAN9303_ALR_DAT1_AGE_OVERRID;
684 alr_port = portmap_2_alrport[port_map & 7];
685 dat1 &= ~LAN9303_ALR_DAT1_PORT_MASK;
686 dat1 |= alr_port << LAN9303_ALR_DAT1_PORT_BITOFFS;
689 dat0 |= (mac[0] << 0);
690 dat0 |= (mac[1] << 8);
691 dat0 |= (mac[2] << 16);
692 dat0 |= (mac[3] << 24);
694 dat1 |= (mac[4] << 0);
695 dat1 |= (mac[5] << 8);
697 lan9303_alr_make_entry_raw(chip, dat0, dat1);
700 /* Add port to static ALR entry, create new static entry if needed */
701 static int lan9303_alr_add_port(struct lan9303 *chip, const u8 *mac, int port,
704 struct lan9303_alr_cache_entry *entr;
706 mutex_lock(&chip->alr_mutex);
707 entr = lan9303_alr_cache_find_mac(chip, mac);
708 if (!entr) { /*New entry */
709 entr = lan9303_alr_cache_find_free(chip);
711 mutex_unlock(&chip->alr_mutex);
714 ether_addr_copy(entr->mac_addr, mac);
716 entr->port_map |= BIT(port);
717 entr->stp_override = stp_override;
718 lan9303_alr_set_entry(chip, mac, entr->port_map, stp_override);
719 mutex_unlock(&chip->alr_mutex);
724 /* Delete static port from ALR entry, delete entry if last port */
725 static int lan9303_alr_del_port(struct lan9303 *chip, const u8 *mac, int port)
727 struct lan9303_alr_cache_entry *entr;
729 mutex_lock(&chip->alr_mutex);
730 entr = lan9303_alr_cache_find_mac(chip, mac);
732 goto out; /* no static entry found */
734 entr->port_map &= ~BIT(port);
735 if (entr->port_map == 0) /* zero means its free again */
736 eth_zero_addr(entr->mac_addr);
737 lan9303_alr_set_entry(chip, mac, entr->port_map, entr->stp_override);
740 mutex_unlock(&chip->alr_mutex);
744 static int lan9303_disable_processing_port(struct lan9303 *chip,
749 /* disable RX, but keep register reset default values else */
750 ret = lan9303_write_switch_port(chip, port, LAN9303_MAC_RX_CFG_0,
751 LAN9303_MAC_RX_CFG_X_REJECT_MAC_TYPES);
755 /* disable TX, but keep register reset default values else */
756 return lan9303_write_switch_port(chip, port, LAN9303_MAC_TX_CFG_0,
757 LAN9303_MAC_TX_CFG_X_TX_IFG_CONFIG_DEFAULT |
758 LAN9303_MAC_TX_CFG_X_TX_PAD_ENABLE);
761 static int lan9303_enable_processing_port(struct lan9303 *chip,
766 /* enable RX and keep register reset default values else */
767 ret = lan9303_write_switch_port(chip, port, LAN9303_MAC_RX_CFG_0,
768 LAN9303_MAC_RX_CFG_X_REJECT_MAC_TYPES |
769 LAN9303_MAC_RX_CFG_X_RX_ENABLE);
773 /* enable TX and keep register reset default values else */
774 return lan9303_write_switch_port(chip, port, LAN9303_MAC_TX_CFG_0,
775 LAN9303_MAC_TX_CFG_X_TX_IFG_CONFIG_DEFAULT |
776 LAN9303_MAC_TX_CFG_X_TX_PAD_ENABLE |
777 LAN9303_MAC_TX_CFG_X_TX_ENABLE);
780 /* forward special tagged packets from port 0 to port 1 *or* port 2 */
781 static int lan9303_setup_tagging(struct lan9303 *chip)
785 /* enable defining the destination port via special VLAN tagging
788 ret = lan9303_write_switch_reg(chip, LAN9303_SWE_INGRESS_PORT_TYPE,
789 LAN9303_SWE_INGRESS_PORT_TYPE_VLAN);
793 /* tag incoming packets at port 1 and 2 on their way to port 0 to be
794 * able to discover their source port
796 val = LAN9303_BM_EGRSS_PORT_TYPE_SPECIAL_TAG_PORT0;
797 return lan9303_write_switch_reg(chip, LAN9303_BM_EGRSS_PORT_TYPE, val);
800 /* We want a special working switch:
801 * - do not forward packets between port 1 and 2
802 * - forward everything from port 1 to port 0
803 * - forward everything from port 2 to port 0
805 static int lan9303_separate_ports(struct lan9303 *chip)
809 lan9303_alr_del_port(chip, eth_stp_addr, 0);
810 ret = lan9303_write_switch_reg(chip, LAN9303_SWE_PORT_MIRROR,
811 LAN9303_SWE_PORT_MIRROR_SNIFFER_PORT0 |
812 LAN9303_SWE_PORT_MIRROR_MIRRORED_PORT1 |
813 LAN9303_SWE_PORT_MIRROR_MIRRORED_PORT2 |
814 LAN9303_SWE_PORT_MIRROR_ENABLE_RX_MIRRORING |
815 LAN9303_SWE_PORT_MIRROR_SNIFF_ALL);
819 /* prevent port 1 and 2 from forwarding packets by their own */
820 return lan9303_write_switch_reg(chip, LAN9303_SWE_PORT_STATE,
821 LAN9303_SWE_PORT_STATE_FORWARDING_PORT0 |
822 LAN9303_SWE_PORT_STATE_BLOCKING_PORT1 |
823 LAN9303_SWE_PORT_STATE_BLOCKING_PORT2);
826 static void lan9303_bridge_ports(struct lan9303 *chip)
828 /* ports bridged: remove mirroring */
829 lan9303_write_switch_reg(chip, LAN9303_SWE_PORT_MIRROR,
830 LAN9303_SWE_PORT_MIRROR_DISABLED);
832 lan9303_write_switch_reg(chip, LAN9303_SWE_PORT_STATE,
833 chip->swe_port_state);
834 lan9303_alr_add_port(chip, eth_stp_addr, 0, true);
837 static void lan9303_handle_reset(struct lan9303 *chip)
839 if (!chip->reset_gpio)
842 if (chip->reset_duration != 0)
843 msleep(chip->reset_duration);
845 /* release (deassert) reset and activate the device */
846 gpiod_set_value_cansleep(chip->reset_gpio, 0);
849 /* stop processing packets for all ports */
850 static int lan9303_disable_processing(struct lan9303 *chip)
854 for (p = 1; p < LAN9303_NUM_PORTS; p++) {
855 int ret = lan9303_disable_processing_port(chip, p);
864 static int lan9303_check_device(struct lan9303 *chip)
869 ret = lan9303_read(chip->regmap, LAN9303_CHIP_REV, ®);
871 dev_err(chip->dev, "failed to read chip revision register: %d\n",
876 if (((reg >> 16) != LAN9303_CHIP_ID) &&
877 ((reg >> 16) != LAN9354_CHIP_ID)) {
878 dev_err(chip->dev, "unexpected device found: LAN%4.4X\n",
883 /* The default state of the LAN9303 device is to forward packets between
884 * all ports (if not configured differently by an external EEPROM).
885 * The initial state of a DSA device must be forwarding packets only
886 * between the external and the internal ports and no forwarding
887 * between the external ports. In preparation we stop packet handling
888 * at all for now until the LAN9303 device is re-programmed accordingly.
890 ret = lan9303_disable_processing(chip);
892 dev_warn(chip->dev, "failed to disable switching %d\n", ret);
894 dev_info(chip->dev, "Found LAN%4.4X rev. %u\n", (reg >> 16), reg & 0xffff);
896 ret = lan9303_detect_phy_setup(chip);
899 "failed to discover phy bootstrap setup: %d\n", ret);
906 /* ---------------------------- DSA -----------------------------------*/
908 static enum dsa_tag_protocol lan9303_get_tag_protocol(struct dsa_switch *ds,
910 enum dsa_tag_protocol mp)
912 return DSA_TAG_PROTO_LAN9303;
915 static int lan9303_setup(struct dsa_switch *ds)
917 struct lan9303 *chip = ds->priv;
921 /* Make sure that port 0 is the cpu port */
922 if (!dsa_is_cpu_port(ds, 0)) {
923 dev_err(chip->dev, "port 0 is not the CPU port\n");
927 /* Virtual Phy: Remove Turbo 200Mbit mode */
928 ret = lan9303_read(chip->regmap, LAN9303_VIRT_SPECIAL_CTRL, ®);
932 /* Clear the TURBO Mode bit if it was set. */
933 if (reg & LAN9303_VIRT_SPECIAL_TURBO) {
934 reg &= ~LAN9303_VIRT_SPECIAL_TURBO;
935 regmap_write(chip->regmap, LAN9303_VIRT_SPECIAL_CTRL, reg);
938 ret = lan9303_setup_tagging(chip);
940 dev_err(chip->dev, "failed to setup port tagging %d\n", ret);
942 ret = lan9303_separate_ports(chip);
944 dev_err(chip->dev, "failed to separate ports %d\n", ret);
946 ret = lan9303_enable_processing_port(chip, 0);
948 dev_err(chip->dev, "failed to re-enable switching %d\n", ret);
950 /* Trap IGMP to port 0 */
951 ret = lan9303_write_switch_reg_mask(chip, LAN9303_SWE_GLB_INGRESS_CFG,
952 LAN9303_SWE_GLB_INGR_IGMP_TRAP |
953 LAN9303_SWE_GLB_INGR_IGMP_PORT(0),
954 LAN9303_SWE_GLB_INGR_IGMP_PORT(1) |
955 LAN9303_SWE_GLB_INGR_IGMP_PORT(2));
957 dev_err(chip->dev, "failed to setup IGMP trap %d\n", ret);
962 struct lan9303_mib_desc {
963 unsigned int offset; /* offset of first MAC */
967 static const struct lan9303_mib_desc lan9303_mib[] = {
968 { .offset = LAN9303_MAC_RX_BRDCST_CNT_0, .name = "RxBroad", },
969 { .offset = LAN9303_MAC_RX_PAUSE_CNT_0, .name = "RxPause", },
970 { .offset = LAN9303_MAC_RX_MULCST_CNT_0, .name = "RxMulti", },
971 { .offset = LAN9303_MAC_RX_PKTOK_CNT_0, .name = "RxOk", },
972 { .offset = LAN9303_MAC_RX_CRCERR_CNT_0, .name = "RxCrcErr", },
973 { .offset = LAN9303_MAC_RX_ALIGN_CNT_0, .name = "RxAlignErr", },
974 { .offset = LAN9303_MAC_RX_JABB_CNT_0, .name = "RxJabber", },
975 { .offset = LAN9303_MAC_RX_FRAG_CNT_0, .name = "RxFragment", },
976 { .offset = LAN9303_MAC_RX_64_CNT_0, .name = "Rx64Byte", },
977 { .offset = LAN9303_MAC_RX_127_CNT_0, .name = "Rx128Byte", },
978 { .offset = LAN9303_MAC_RX_255_CNT_0, .name = "Rx256Byte", },
979 { .offset = LAN9303_MAC_RX_511_CNT_0, .name = "Rx512Byte", },
980 { .offset = LAN9303_MAC_RX_1023_CNT_0, .name = "Rx1024Byte", },
981 { .offset = LAN9303_MAC_RX_MAX_CNT_0, .name = "RxMaxByte", },
982 { .offset = LAN9303_MAC_RX_PKTLEN_CNT_0, .name = "RxByteCnt", },
983 { .offset = LAN9303_MAC_RX_SYMBL_CNT_0, .name = "RxSymbolCnt", },
984 { .offset = LAN9303_MAC_RX_CTLFRM_CNT_0, .name = "RxCfs", },
985 { .offset = LAN9303_MAC_RX_OVRSZE_CNT_0, .name = "RxOverFlow", },
986 { .offset = LAN9303_MAC_TX_UNDSZE_CNT_0, .name = "TxShort", },
987 { .offset = LAN9303_MAC_TX_BRDCST_CNT_0, .name = "TxBroad", },
988 { .offset = LAN9303_MAC_TX_PAUSE_CNT_0, .name = "TxPause", },
989 { .offset = LAN9303_MAC_TX_MULCST_CNT_0, .name = "TxMulti", },
990 { .offset = LAN9303_MAC_RX_UNDSZE_CNT_0, .name = "RxShort", },
991 { .offset = LAN9303_MAC_TX_64_CNT_0, .name = "Tx64Byte", },
992 { .offset = LAN9303_MAC_TX_127_CNT_0, .name = "Tx128Byte", },
993 { .offset = LAN9303_MAC_TX_255_CNT_0, .name = "Tx256Byte", },
994 { .offset = LAN9303_MAC_TX_511_CNT_0, .name = "Tx512Byte", },
995 { .offset = LAN9303_MAC_TX_1023_CNT_0, .name = "Tx1024Byte", },
996 { .offset = LAN9303_MAC_TX_MAX_CNT_0, .name = "TxMaxByte", },
997 { .offset = LAN9303_MAC_TX_PKTLEN_CNT_0, .name = "TxByteCnt", },
998 { .offset = LAN9303_MAC_TX_PKTOK_CNT_0, .name = "TxOk", },
999 { .offset = LAN9303_MAC_TX_TOTALCOL_CNT_0, .name = "TxCollision", },
1000 { .offset = LAN9303_MAC_TX_MULTICOL_CNT_0, .name = "TxMultiCol", },
1001 { .offset = LAN9303_MAC_TX_SNGLECOL_CNT_0, .name = "TxSingleCol", },
1002 { .offset = LAN9303_MAC_TX_EXCOL_CNT_0, .name = "TxExcCol", },
1003 { .offset = LAN9303_MAC_TX_DEFER_CNT_0, .name = "TxDefer", },
1004 { .offset = LAN9303_MAC_TX_LATECOL_0, .name = "TxLateCol", },
1007 static void lan9303_get_strings(struct dsa_switch *ds, int port,
1008 u32 stringset, uint8_t *data)
1012 if (stringset != ETH_SS_STATS)
1015 for (u = 0; u < ARRAY_SIZE(lan9303_mib); u++) {
1016 strncpy(data + u * ETH_GSTRING_LEN, lan9303_mib[u].name,
1021 static void lan9303_get_ethtool_stats(struct dsa_switch *ds, int port,
1024 struct lan9303 *chip = ds->priv;
1027 for (u = 0; u < ARRAY_SIZE(lan9303_mib); u++) {
1031 ret = lan9303_read_switch_port(
1032 chip, port, lan9303_mib[u].offset, ®);
1035 dev_warn(chip->dev, "Reading status port %d reg %u failed\n",
1036 port, lan9303_mib[u].offset);
1043 static int lan9303_get_sset_count(struct dsa_switch *ds, int port, int sset)
1045 if (sset != ETH_SS_STATS)
1048 return ARRAY_SIZE(lan9303_mib);
1051 static int lan9303_phy_read(struct dsa_switch *ds, int phy, int regnum)
1053 struct lan9303 *chip = ds->priv;
1054 int phy_base = chip->phy_addr_base;
1056 if (phy == phy_base)
1057 return lan9303_virt_phy_reg_read(chip, regnum);
1058 if (phy > phy_base + 2)
1061 return chip->ops->phy_read(chip, phy, regnum);
1064 static int lan9303_phy_write(struct dsa_switch *ds, int phy, int regnum,
1067 struct lan9303 *chip = ds->priv;
1068 int phy_base = chip->phy_addr_base;
1070 if (phy == phy_base)
1071 return lan9303_virt_phy_reg_write(chip, regnum, val);
1072 if (phy > phy_base + 2)
1075 return chip->ops->phy_write(chip, phy, regnum, val);
1078 static int lan9303_port_enable(struct dsa_switch *ds, int port,
1079 struct phy_device *phy)
1081 struct dsa_port *dp = dsa_to_port(ds, port);
1082 struct lan9303 *chip = ds->priv;
1084 if (!dsa_port_is_user(dp))
1087 vlan_vid_add(dsa_port_to_conduit(dp), htons(ETH_P_8021Q), port);
1089 return lan9303_enable_processing_port(chip, port);
1092 static void lan9303_port_disable(struct dsa_switch *ds, int port)
1094 struct dsa_port *dp = dsa_to_port(ds, port);
1095 struct lan9303 *chip = ds->priv;
1097 if (!dsa_port_is_user(dp))
1100 vlan_vid_del(dsa_port_to_conduit(dp), htons(ETH_P_8021Q), port);
1102 lan9303_disable_processing_port(chip, port);
1103 lan9303_phy_write(ds, chip->phy_addr_base + port, MII_BMCR, BMCR_PDOWN);
1106 static int lan9303_port_bridge_join(struct dsa_switch *ds, int port,
1107 struct dsa_bridge bridge,
1108 bool *tx_fwd_offload,
1109 struct netlink_ext_ack *extack)
1111 struct lan9303 *chip = ds->priv;
1113 dev_dbg(chip->dev, "%s(port %d)\n", __func__, port);
1114 if (dsa_port_bridge_same(dsa_to_port(ds, 1), dsa_to_port(ds, 2))) {
1115 lan9303_bridge_ports(chip);
1116 chip->is_bridged = true; /* unleash stp_state_set() */
1122 static void lan9303_port_bridge_leave(struct dsa_switch *ds, int port,
1123 struct dsa_bridge bridge)
1125 struct lan9303 *chip = ds->priv;
1127 dev_dbg(chip->dev, "%s(port %d)\n", __func__, port);
1128 if (chip->is_bridged) {
1129 lan9303_separate_ports(chip);
1130 chip->is_bridged = false;
1134 static void lan9303_port_stp_state_set(struct dsa_switch *ds, int port,
1137 int portmask, portstate;
1138 struct lan9303 *chip = ds->priv;
1140 dev_dbg(chip->dev, "%s(port %d, state %d)\n",
1141 __func__, port, state);
1144 case BR_STATE_DISABLED:
1145 portstate = LAN9303_SWE_PORT_STATE_DISABLED_PORT0;
1147 case BR_STATE_BLOCKING:
1148 case BR_STATE_LISTENING:
1149 portstate = LAN9303_SWE_PORT_STATE_BLOCKING_PORT0;
1151 case BR_STATE_LEARNING:
1152 portstate = LAN9303_SWE_PORT_STATE_LEARNING_PORT0;
1154 case BR_STATE_FORWARDING:
1155 portstate = LAN9303_SWE_PORT_STATE_FORWARDING_PORT0;
1158 portstate = LAN9303_SWE_PORT_STATE_DISABLED_PORT0;
1159 dev_err(chip->dev, "unknown stp state: port %d, state %d\n",
1163 portmask = 0x3 << (port * 2);
1164 portstate <<= (port * 2);
1166 chip->swe_port_state = (chip->swe_port_state & ~portmask) | portstate;
1168 if (chip->is_bridged)
1169 lan9303_write_switch_reg(chip, LAN9303_SWE_PORT_STATE,
1170 chip->swe_port_state);
1171 /* else: touching SWE_PORT_STATE would break port separation */
1174 static void lan9303_port_fast_age(struct dsa_switch *ds, int port)
1176 struct lan9303 *chip = ds->priv;
1177 struct del_port_learned_ctx del_ctx = {
1181 dev_dbg(chip->dev, "%s(%d)\n", __func__, port);
1182 lan9303_alr_loop(chip, alr_loop_cb_del_port_learned, &del_ctx);
1185 static int lan9303_port_fdb_add(struct dsa_switch *ds, int port,
1186 const unsigned char *addr, u16 vid,
1189 struct lan9303 *chip = ds->priv;
1191 dev_dbg(chip->dev, "%s(%d, %pM, %d)\n", __func__, port, addr, vid);
1193 return lan9303_alr_add_port(chip, addr, port, false);
1196 static int lan9303_port_fdb_del(struct dsa_switch *ds, int port,
1197 const unsigned char *addr, u16 vid,
1200 struct lan9303 *chip = ds->priv;
1202 dev_dbg(chip->dev, "%s(%d, %pM, %d)\n", __func__, port, addr, vid);
1203 lan9303_alr_del_port(chip, addr, port);
1208 static int lan9303_port_fdb_dump(struct dsa_switch *ds, int port,
1209 dsa_fdb_dump_cb_t *cb, void *data)
1211 struct lan9303 *chip = ds->priv;
1212 struct port_fdb_dump_ctx dump_ctx = {
1218 dev_dbg(chip->dev, "%s(%d)\n", __func__, port);
1219 return lan9303_alr_loop(chip, alr_loop_cb_fdb_port_dump, &dump_ctx);
1222 static int lan9303_port_mdb_prepare(struct dsa_switch *ds, int port,
1223 const struct switchdev_obj_port_mdb *mdb)
1225 struct lan9303 *chip = ds->priv;
1227 dev_dbg(chip->dev, "%s(%d, %pM, %d)\n", __func__, port, mdb->addr,
1231 if (lan9303_alr_cache_find_mac(chip, mdb->addr))
1233 if (!lan9303_alr_cache_find_free(chip))
1239 static int lan9303_port_mdb_add(struct dsa_switch *ds, int port,
1240 const struct switchdev_obj_port_mdb *mdb,
1243 struct lan9303 *chip = ds->priv;
1246 err = lan9303_port_mdb_prepare(ds, port, mdb);
1250 dev_dbg(chip->dev, "%s(%d, %pM, %d)\n", __func__, port, mdb->addr,
1252 return lan9303_alr_add_port(chip, mdb->addr, port, false);
1255 static int lan9303_port_mdb_del(struct dsa_switch *ds, int port,
1256 const struct switchdev_obj_port_mdb *mdb,
1259 struct lan9303 *chip = ds->priv;
1261 dev_dbg(chip->dev, "%s(%d, %pM, %d)\n", __func__, port, mdb->addr,
1265 lan9303_alr_del_port(chip, mdb->addr, port);
1270 static void lan9303_phylink_get_caps(struct dsa_switch *ds, int port,
1271 struct phylink_config *config)
1273 struct lan9303 *chip = ds->priv;
1275 dev_dbg(chip->dev, "%s(%d) entered.", __func__, port);
1277 config->mac_capabilities = MAC_10 | MAC_100 | MAC_ASYM_PAUSE |
1281 __set_bit(PHY_INTERFACE_MODE_RMII,
1282 config->supported_interfaces);
1283 __set_bit(PHY_INTERFACE_MODE_MII,
1284 config->supported_interfaces);
1286 __set_bit(PHY_INTERFACE_MODE_INTERNAL,
1287 config->supported_interfaces);
1288 /* Compatibility for phylib's default interface type when the
1289 * phy-mode property is absent
1291 __set_bit(PHY_INTERFACE_MODE_GMII,
1292 config->supported_interfaces);
1296 static void lan9303_phylink_mac_link_up(struct dsa_switch *ds, int port,
1298 phy_interface_t interface,
1299 struct phy_device *phydev, int speed,
1300 int duplex, bool tx_pause,
1303 struct lan9303 *chip = ds->priv;
1307 /* On this device, we are only interested in doing something here if
1308 * this is the xMII port. All other ports are 10/100 phys using MDIO
1309 * to control there link settings.
1311 if (!IS_PORT_XMII(port))
1314 /* Disable auto-negotiation and force the speed/duplex settings. */
1315 ctl = lan9303_phy_read(ds, port, MII_BMCR);
1316 ctl &= ~(BMCR_ANENABLE | BMCR_SPEED100 | BMCR_FULLDPLX);
1317 if (speed == SPEED_100)
1318 ctl |= BMCR_SPEED100;
1319 if (duplex == DUPLEX_FULL)
1320 ctl |= BMCR_FULLDPLX;
1321 lan9303_phy_write(ds, port, MII_BMCR, ctl);
1323 /* Force the flow control settings. */
1324 lan9303_read(chip->regmap, flow_ctl_reg[port], ®);
1325 reg &= ~(LAN9303_BP_EN | LAN9303_RX_FC_EN | LAN9303_TX_FC_EN);
1327 reg |= (LAN9303_RX_FC_EN | LAN9303_BP_EN);
1329 reg |= LAN9303_TX_FC_EN;
1330 regmap_write(chip->regmap, flow_ctl_reg[port], reg);
1333 static const struct dsa_switch_ops lan9303_switch_ops = {
1334 .get_tag_protocol = lan9303_get_tag_protocol,
1335 .setup = lan9303_setup,
1336 .get_strings = lan9303_get_strings,
1337 .phy_read = lan9303_phy_read,
1338 .phy_write = lan9303_phy_write,
1339 .phylink_get_caps = lan9303_phylink_get_caps,
1340 .phylink_mac_link_up = lan9303_phylink_mac_link_up,
1341 .get_ethtool_stats = lan9303_get_ethtool_stats,
1342 .get_sset_count = lan9303_get_sset_count,
1343 .port_enable = lan9303_port_enable,
1344 .port_disable = lan9303_port_disable,
1345 .port_bridge_join = lan9303_port_bridge_join,
1346 .port_bridge_leave = lan9303_port_bridge_leave,
1347 .port_stp_state_set = lan9303_port_stp_state_set,
1348 .port_fast_age = lan9303_port_fast_age,
1349 .port_fdb_add = lan9303_port_fdb_add,
1350 .port_fdb_del = lan9303_port_fdb_del,
1351 .port_fdb_dump = lan9303_port_fdb_dump,
1352 .port_mdb_add = lan9303_port_mdb_add,
1353 .port_mdb_del = lan9303_port_mdb_del,
1356 static int lan9303_register_switch(struct lan9303 *chip)
1360 chip->ds = devm_kzalloc(chip->dev, sizeof(*chip->ds), GFP_KERNEL);
1364 chip->ds->dev = chip->dev;
1365 chip->ds->num_ports = LAN9303_NUM_PORTS;
1366 chip->ds->priv = chip;
1367 chip->ds->ops = &lan9303_switch_ops;
1368 base = chip->phy_addr_base;
1369 chip->ds->phys_mii_mask = GENMASK(LAN9303_NUM_PORTS - 1 + base, base);
1371 return dsa_register_switch(chip->ds);
1374 static int lan9303_probe_reset_gpio(struct lan9303 *chip,
1375 struct device_node *np)
1377 chip->reset_gpio = devm_gpiod_get_optional(chip->dev, "reset",
1379 if (IS_ERR(chip->reset_gpio))
1380 return PTR_ERR(chip->reset_gpio);
1382 if (!chip->reset_gpio) {
1383 dev_dbg(chip->dev, "No reset GPIO defined\n");
1387 chip->reset_duration = 200;
1390 of_property_read_u32(np, "reset-duration",
1391 &chip->reset_duration);
1393 dev_dbg(chip->dev, "reset duration defaults to 200 ms\n");
1396 /* A sane reset duration should not be longer than 1s */
1397 if (chip->reset_duration > 1000)
1398 chip->reset_duration = 1000;
1403 int lan9303_probe(struct lan9303 *chip, struct device_node *np)
1408 mutex_init(&chip->indirect_mutex);
1409 mutex_init(&chip->alr_mutex);
1411 ret = lan9303_probe_reset_gpio(chip, np);
1415 lan9303_handle_reset(chip);
1417 /* First read to the device. This is a Dummy read to ensure MDIO */
1418 /* access is in 32-bit sync. */
1419 ret = lan9303_read(chip->regmap, LAN9303_BYTE_ORDER, ®);
1421 dev_err(chip->dev, "failed to access the device: %d\n",
1423 if (!chip->reset_gpio) {
1425 "hint: maybe failed due to missing reset GPIO\n");
1430 ret = lan9303_check_device(chip);
1434 ret = lan9303_register_switch(chip);
1436 dev_dbg(chip->dev, "Failed to register switch: %d\n", ret);
1442 EXPORT_SYMBOL(lan9303_probe);
1444 int lan9303_remove(struct lan9303 *chip)
1448 rc = lan9303_disable_processing(chip);
1450 dev_warn(chip->dev, "shutting down failed\n");
1452 dsa_unregister_switch(chip->ds);
1454 /* assert reset to the whole device to prevent it from doing anything */
1455 gpiod_set_value_cansleep(chip->reset_gpio, 1);
1459 EXPORT_SYMBOL(lan9303_remove);
1461 void lan9303_shutdown(struct lan9303 *chip)
1463 dsa_switch_shutdown(chip->ds);
1465 EXPORT_SYMBOL(lan9303_shutdown);
1468 MODULE_DESCRIPTION("Core driver for SMSC/Microchip LAN9303 three port ethernet switch");
1469 MODULE_LICENSE("GPL v2");