1 // SPDX-License-Identifier: GPL-2.0
2 /* Realtek SMI subdriver for the Realtek RTL8366RB ethernet switch
3 *
4 * This is a sparsely documented chip, the only viable documentation seems
5 * to be a patched up code drop from the vendor that appear in various
6 * GPL source trees.
7 *
8 * Copyright (C) 2017 Linus Walleij <linus.walleij@linaro.org>
9 * Copyright (C) 2009-2010 Gabor Juhos <juhosg@openwrt.org>
10 * Copyright (C) 2010 Antti Seppälä <a.seppala@gmail.com>
11 * Copyright (C) 2010 Roman Yeryomin <roman@advem.lv>
12 * Copyright (C) 2011 Colin Leitner <colin.leitner@googlemail.com>
13 */
14
15 #include <linux/bitops.h>
16 #include <linux/etherdevice.h>
17 #include <linux/if_bridge.h>
18 #include <linux/if_vlan.h>
19 #include <linux/interrupt.h>
20 #include <linux/irqdomain.h>
21 #include <linux/irqchip/chained_irq.h>
22 #include <linux/of_irq.h>
23 #include <linux/regmap.h>
24
25 #include "realtek.h"
26 #include "realtek-smi.h"
27 #include "realtek-mdio.h"
28 #include "rtl83xx.h"
29
30 #define RTL8366RB_PORT_NUM_CPU 5
31 #define RTL8366RB_NUM_PORTS 6
32 #define RTL8366RB_PHY_NO_MAX 4
33 #define RTL8366RB_PHY_ADDR_MAX 31
34
35 /* Switch Global Configuration register */
36 #define RTL8366RB_SGCR 0x0000
37 #define RTL8366RB_SGCR_EN_BC_STORM_CTRL BIT(0)
38 #define RTL8366RB_SGCR_MAX_LENGTH(a) ((a) << 4)
39 #define RTL8366RB_SGCR_MAX_LENGTH_MASK RTL8366RB_SGCR_MAX_LENGTH(0x3)
40 #define RTL8366RB_SGCR_MAX_LENGTH_1522 RTL8366RB_SGCR_MAX_LENGTH(0x0)
41 #define RTL8366RB_SGCR_MAX_LENGTH_1536 RTL8366RB_SGCR_MAX_LENGTH(0x1)
42 #define RTL8366RB_SGCR_MAX_LENGTH_1552 RTL8366RB_SGCR_MAX_LENGTH(0x2)
43 #define RTL8366RB_SGCR_MAX_LENGTH_16000 RTL8366RB_SGCR_MAX_LENGTH(0x3)
44 #define RTL8366RB_SGCR_EN_VLAN BIT(13)
45 #define RTL8366RB_SGCR_EN_VLAN_4KTB BIT(14)
46
47 /* Port Enable Control register */
48 #define RTL8366RB_PECR 0x0001
49
50 /* Switch per-port learning disablement register */
51 #define RTL8366RB_PORT_LEARNDIS_CTRL 0x0002
52
53 /* Security control, actually aging register */
54 #define RTL8366RB_SECURITY_CTRL 0x0003
55
56 #define RTL8366RB_SSCR2 0x0004
57 #define RTL8366RB_SSCR2_DROP_UNKNOWN_DA BIT(0)
58
59 /* Port Mode Control registers */
60 #define RTL8366RB_PMC0 0x0005
61 #define RTL8366RB_PMC0_SPI BIT(0)
62 #define RTL8366RB_PMC0_EN_AUTOLOAD BIT(1)
63 #define RTL8366RB_PMC0_PROBE BIT(2)
64 #define RTL8366RB_PMC0_DIS_BISR BIT(3)
65 #define RTL8366RB_PMC0_ADCTEST BIT(4)
66 #define RTL8366RB_PMC0_SRAM_DIAG BIT(5)
67 #define RTL8366RB_PMC0_EN_SCAN BIT(6)
68 #define RTL8366RB_PMC0_P4_IOMODE_SHIFT 7
69 #define RTL8366RB_PMC0_P4_IOMODE_MASK GENMASK(9, 7)
70 #define RTL8366RB_PMC0_P5_IOMODE_SHIFT 10
71 #define RTL8366RB_PMC0_P5_IOMODE_MASK GENMASK(12, 10)
72 #define RTL8366RB_PMC0_SDSMODE_SHIFT 13
73 #define RTL8366RB_PMC0_SDSMODE_MASK GENMASK(15, 13)
74 #define RTL8366RB_PMC1 0x0006
75
76 /* Port Mirror Control Register */
77 #define RTL8366RB_PMCR 0x0007
78 #define RTL8366RB_PMCR_SOURCE_PORT(a) (a)
79 #define RTL8366RB_PMCR_SOURCE_PORT_MASK 0x000f
80 #define RTL8366RB_PMCR_MONITOR_PORT(a) ((a) << 4)
81 #define RTL8366RB_PMCR_MONITOR_PORT_MASK 0x00f0
82 #define RTL8366RB_PMCR_MIRROR_RX BIT(8)
83 #define RTL8366RB_PMCR_MIRROR_TX BIT(9)
84 #define RTL8366RB_PMCR_MIRROR_SPC BIT(10)
85 #define RTL8366RB_PMCR_MIRROR_ISO BIT(11)
86
87 /* bits 0..7 = port 0, bits 8..15 = port 1 */
88 #define RTL8366RB_PAACR0 0x0010
89 /* bits 0..7 = port 2, bits 8..15 = port 3 */
90 #define RTL8366RB_PAACR1 0x0011
91 /* bits 0..7 = port 4, bits 8..15 = port 5 */
92 #define RTL8366RB_PAACR2 0x0012
93 #define RTL8366RB_PAACR_SPEED_10M 0
94 #define RTL8366RB_PAACR_SPEED_100M 1
95 #define RTL8366RB_PAACR_SPEED_1000M 2
96 #define RTL8366RB_PAACR_FULL_DUPLEX BIT(2)
97 #define RTL8366RB_PAACR_LINK_UP BIT(4)
98 #define RTL8366RB_PAACR_TX_PAUSE BIT(5)
99 #define RTL8366RB_PAACR_RX_PAUSE BIT(6)
100 #define RTL8366RB_PAACR_AN BIT(7)
101
102 /* bits 0..7 = port 0, bits 8..15 = port 1 */
103 #define RTL8366RB_PSTAT0 0x0014
104 /* bits 0..7 = port 2, bits 8..15 = port 3 */
105 #define RTL8366RB_PSTAT1 0x0015
106 /* bits 0..7 = port 4, bits 8..15 = port 5 */
107 #define RTL8366RB_PSTAT2 0x0016
108
109 #define RTL8366RB_POWER_SAVING_REG 0x0021
110
111 /* Spanning tree status (STP) control, two bits per port per FID */
112 #define RTL8366RB_STP_STATE_BASE 0x0050 /* 0x0050..0x0057 */
113 #define RTL8366RB_STP_STATE_DISABLED 0x0
114 #define RTL8366RB_STP_STATE_BLOCKING 0x1
115 #define RTL8366RB_STP_STATE_LEARNING 0x2
116 #define RTL8366RB_STP_STATE_FORWARDING 0x3
117 #define RTL8366RB_STP_MASK GENMASK(1, 0)
118 #define RTL8366RB_STP_STATE(port, state) \
119 ((state) << ((port) * 2))
120 #define RTL8366RB_STP_STATE_MASK(port) \
121 RTL8366RB_STP_STATE((port), RTL8366RB_STP_MASK)
122
123 /* CPU port control reg */
124 #define RTL8366RB_CPU_CTRL_REG 0x0061
125 #define RTL8366RB_CPU_PORTS_MSK 0x00FF
126 /* Disables inserting custom tag length/type 0x8899 */
127 #define RTL8366RB_CPU_NO_TAG BIT(15)
128 #define RTL8366RB_CPU_TAG_SIZE 4
129
130 #define RTL8366RB_SMAR0 0x0070 /* bits 0..15 */
131 #define RTL8366RB_SMAR1 0x0071 /* bits 16..31 */
132 #define RTL8366RB_SMAR2 0x0072 /* bits 32..47 */
133
134 #define RTL8366RB_RESET_CTRL_REG 0x0100
135 #define RTL8366RB_CHIP_CTRL_RESET_HW BIT(0)
136 #define RTL8366RB_CHIP_CTRL_RESET_SW BIT(1)
137
138 #define RTL8366RB_CHIP_ID_REG 0x0509
139 #define RTL8366RB_CHIP_ID_8366 0x5937
140 #define RTL8366RB_CHIP_VERSION_CTRL_REG 0x050A
141 #define RTL8366RB_CHIP_VERSION_MASK 0xf
142
143 /* PHY registers control */
144 #define RTL8366RB_PHY_ACCESS_CTRL_REG 0x8000
145 #define RTL8366RB_PHY_CTRL_READ BIT(0)
146 #define RTL8366RB_PHY_CTRL_WRITE 0
147 #define RTL8366RB_PHY_ACCESS_BUSY_REG 0x8001
148 #define RTL8366RB_PHY_INT_BUSY BIT(0)
149 #define RTL8366RB_PHY_EXT_BUSY BIT(4)
150 #define RTL8366RB_PHY_ACCESS_DATA_REG 0x8002
151 #define RTL8366RB_PHY_EXT_CTRL_REG 0x8010
152 #define RTL8366RB_PHY_EXT_WRDATA_REG 0x8011
153 #define RTL8366RB_PHY_EXT_RDDATA_REG 0x8012
154
155 #define RTL8366RB_PHY_REG_MASK 0x1f
156 #define RTL8366RB_PHY_PAGE_OFFSET 5
157 #define RTL8366RB_PHY_PAGE_MASK (0xf << 5)
158 #define RTL8366RB_PHY_NO_OFFSET 9
159 #define RTL8366RB_PHY_NO_MASK (0x1f << 9)
160
161 /* VLAN Ingress Control Register 1, one bit per port.
162 * bit 0 .. 5 will make the switch drop ingress frames without
163 * VID such as untagged or priority-tagged frames for respective
164 * port.
165 * bit 6 .. 11 will make the switch drop ingress frames carrying
166 * a C-tag with VID != 0 for respective port.
167 */
168 #define RTL8366RB_VLAN_INGRESS_CTRL1_REG 0x037E
169 #define RTL8366RB_VLAN_INGRESS_CTRL1_DROP(port) (BIT((port)) | BIT((port) + 6))
170
171 /* VLAN Ingress Control Register 2, one bit per port.
172 * bit0 .. bit5 will make the switch drop all ingress frames with
173 * a VLAN classification that does not include the port is in its
174 * member set.
175 */
176 #define RTL8366RB_VLAN_INGRESS_CTRL2_REG 0x037f
177
178 /* LED control registers */
179 /* The LED blink rate is global; it is used by all triggers in all groups. */
180 #define RTL8366RB_LED_BLINKRATE_REG 0x0430
181 #define RTL8366RB_LED_BLINKRATE_MASK 0x0007
182 #define RTL8366RB_LED_BLINKRATE_28MS 0x0000
183 #define RTL8366RB_LED_BLINKRATE_56MS 0x0001
184 #define RTL8366RB_LED_BLINKRATE_84MS 0x0002
185 #define RTL8366RB_LED_BLINKRATE_111MS 0x0003
186 #define RTL8366RB_LED_BLINKRATE_222MS 0x0004
187 #define RTL8366RB_LED_BLINKRATE_446MS 0x0005
188
189 /* LED trigger event for each group */
190 #define RTL8366RB_LED_CTRL_REG 0x0431
191 #define RTL8366RB_LED_CTRL_OFFSET(led_group) \
192 (4 * (led_group))
193 #define RTL8366RB_LED_CTRL_MASK(led_group) \
194 (0xf << RTL8366RB_LED_CTRL_OFFSET(led_group))
195
196 /* The RTL8366RB_LED_X_X registers are used to manually set the LED state only
197 * when the corresponding LED group in RTL8366RB_LED_CTRL_REG is
198 * RTL8366RB_LEDGROUP_FORCE. Otherwise, it is ignored.
199 */
200 #define RTL8366RB_LED_0_1_CTRL_REG 0x0432
201 #define RTL8366RB_LED_2_3_CTRL_REG 0x0433
202 #define RTL8366RB_LED_X_X_CTRL_REG(led_group) \
203 ((led_group) <= 1 ? \
204 RTL8366RB_LED_0_1_CTRL_REG : \
205 RTL8366RB_LED_2_3_CTRL_REG)
206 #define RTL8366RB_LED_0_X_CTRL_MASK GENMASK(5, 0)
207 #define RTL8366RB_LED_X_1_CTRL_MASK GENMASK(11, 6)
208 #define RTL8366RB_LED_2_X_CTRL_MASK GENMASK(5, 0)
209 #define RTL8366RB_LED_X_3_CTRL_MASK GENMASK(11, 6)
210
211 #define RTL8366RB_MIB_COUNT 33
212 #define RTL8366RB_GLOBAL_MIB_COUNT 1
213 #define RTL8366RB_MIB_COUNTER_PORT_OFFSET 0x0050
214 #define RTL8366RB_MIB_COUNTER_BASE 0x1000
215 #define RTL8366RB_MIB_CTRL_REG 0x13F0
216 #define RTL8366RB_MIB_CTRL_USER_MASK 0x0FFC
217 #define RTL8366RB_MIB_CTRL_BUSY_MASK BIT(0)
218 #define RTL8366RB_MIB_CTRL_RESET_MASK BIT(1)
219 #define RTL8366RB_MIB_CTRL_PORT_RESET(_p) BIT(2 + (_p))
220 #define RTL8366RB_MIB_CTRL_GLOBAL_RESET BIT(11)
221
222 #define RTL8366RB_PORT_VLAN_CTRL_BASE 0x0063
223 #define RTL8366RB_PORT_VLAN_CTRL_REG(_p) \
224 (RTL8366RB_PORT_VLAN_CTRL_BASE + (_p) / 4)
225 #define RTL8366RB_PORT_VLAN_CTRL_MASK 0xf
226 #define RTL8366RB_PORT_VLAN_CTRL_SHIFT(_p) (4 * ((_p) % 4))
227
228 #define RTL8366RB_VLAN_TABLE_READ_BASE 0x018C
229 #define RTL8366RB_VLAN_TABLE_WRITE_BASE 0x0185
230
231 #define RTL8366RB_TABLE_ACCESS_CTRL_REG 0x0180
232 #define RTL8366RB_TABLE_VLAN_READ_CTRL 0x0E01
233 #define RTL8366RB_TABLE_VLAN_WRITE_CTRL 0x0F01
234
235 #define RTL8366RB_VLAN_MC_BASE(_x) (0x0020 + (_x) * 3)
236
237 #define RTL8366RB_PORT_LINK_STATUS_BASE 0x0014
238 #define RTL8366RB_PORT_STATUS_SPEED_MASK 0x0003
239 #define RTL8366RB_PORT_STATUS_DUPLEX_MASK 0x0004
240 #define RTL8366RB_PORT_STATUS_LINK_MASK 0x0010
241 #define RTL8366RB_PORT_STATUS_TXPAUSE_MASK 0x0020
242 #define RTL8366RB_PORT_STATUS_RXPAUSE_MASK 0x0040
243 #define RTL8366RB_PORT_STATUS_AN_MASK 0x0080
244
245 #define RTL8366RB_NUM_VLANS 16
246 #define RTL8366RB_NUM_LEDGROUPS 4
247 #define RTL8366RB_NUM_VIDS 4096
248 #define RTL8366RB_PRIORITYMAX 7
249 #define RTL8366RB_NUM_FIDS 8
250 #define RTL8366RB_FIDMAX 7
251
252 #define RTL8366RB_PORT_1 BIT(0) /* In userspace port 0 */
253 #define RTL8366RB_PORT_2 BIT(1) /* In userspace port 1 */
254 #define RTL8366RB_PORT_3 BIT(2) /* In userspace port 2 */
255 #define RTL8366RB_PORT_4 BIT(3) /* In userspace port 3 */
256 #define RTL8366RB_PORT_5 BIT(4) /* In userspace port 4 */
257
258 #define RTL8366RB_PORT_CPU BIT(5) /* CPU port */
259
260 #define RTL8366RB_PORT_ALL (RTL8366RB_PORT_1 | \
261 RTL8366RB_PORT_2 | \
262 RTL8366RB_PORT_3 | \
263 RTL8366RB_PORT_4 | \
264 RTL8366RB_PORT_5 | \
265 RTL8366RB_PORT_CPU)
266
267 #define RTL8366RB_PORT_ALL_BUT_CPU (RTL8366RB_PORT_1 | \
268 RTL8366RB_PORT_2 | \
269 RTL8366RB_PORT_3 | \
270 RTL8366RB_PORT_4 | \
271 RTL8366RB_PORT_5)
272
273 #define RTL8366RB_PORT_ALL_EXTERNAL (RTL8366RB_PORT_1 | \
274 RTL8366RB_PORT_2 | \
275 RTL8366RB_PORT_3 | \
276 RTL8366RB_PORT_4)
277
278 #define RTL8366RB_PORT_ALL_INTERNAL RTL8366RB_PORT_CPU
279
280 /* First configuration word per member config, VID and prio */
281 #define RTL8366RB_VLAN_VID_MASK 0xfff
282 #define RTL8366RB_VLAN_PRIORITY_SHIFT 12
283 #define RTL8366RB_VLAN_PRIORITY_MASK 0x7
284 /* Second configuration word per member config, member and untagged */
285 #define RTL8366RB_VLAN_UNTAG_SHIFT 8
286 #define RTL8366RB_VLAN_UNTAG_MASK 0xff
287 #define RTL8366RB_VLAN_MEMBER_MASK 0xff
288 /* Third config word per member config, STAG currently unused */
289 #define RTL8366RB_VLAN_STAG_MBR_MASK 0xff
290 #define RTL8366RB_VLAN_STAG_MBR_SHIFT 8
291 #define RTL8366RB_VLAN_STAG_IDX_MASK 0x7
292 #define RTL8366RB_VLAN_STAG_IDX_SHIFT 5
293 #define RTL8366RB_VLAN_FID_MASK 0x7
294
295 /* Port ingress bandwidth control */
296 #define RTL8366RB_IB_BASE 0x0200
297 #define RTL8366RB_IB_REG(pnum) (RTL8366RB_IB_BASE + (pnum))
298 #define RTL8366RB_IB_BDTH_MASK 0x3fff
299 #define RTL8366RB_IB_PREIFG BIT(14)
300
301 /* Port egress bandwidth control */
302 #define RTL8366RB_EB_BASE 0x02d1
303 #define RTL8366RB_EB_REG(pnum) (RTL8366RB_EB_BASE + (pnum))
304 #define RTL8366RB_EB_BDTH_MASK 0x3fff
305 #define RTL8366RB_EB_PREIFG_REG 0x02f8
306 #define RTL8366RB_EB_PREIFG BIT(9)
307
308 #define RTL8366RB_BDTH_SW_MAX 1048512 /* 1048576? */
309 #define RTL8366RB_BDTH_UNIT 64
310 #define RTL8366RB_BDTH_REG_DEFAULT 16383
311
312 /* QOS */
313 #define RTL8366RB_QOS BIT(15)
314 /* Include/Exclude Preamble and IFG (20 bytes). 0:Exclude, 1:Include. */
315 #define RTL8366RB_QOS_DEFAULT_PREIFG 1
316
317 /* Interrupt handling */
318 #define RTL8366RB_INTERRUPT_CONTROL_REG 0x0440
319 #define RTL8366RB_INTERRUPT_POLARITY BIT(0)
320 #define RTL8366RB_P4_RGMII_LED BIT(2)
321 #define RTL8366RB_INTERRUPT_MASK_REG 0x0441
322 #define RTL8366RB_INTERRUPT_LINK_CHGALL GENMASK(11, 0)
323 #define RTL8366RB_INTERRUPT_ACLEXCEED BIT(8)
324 #define RTL8366RB_INTERRUPT_STORMEXCEED BIT(9)
325 #define RTL8366RB_INTERRUPT_P4_FIBER BIT(12)
326 #define RTL8366RB_INTERRUPT_P4_UTP BIT(13)
327 #define RTL8366RB_INTERRUPT_VALID (RTL8366RB_INTERRUPT_LINK_CHGALL | \
328 RTL8366RB_INTERRUPT_ACLEXCEED | \
329 RTL8366RB_INTERRUPT_STORMEXCEED | \
330 RTL8366RB_INTERRUPT_P4_FIBER | \
331 RTL8366RB_INTERRUPT_P4_UTP)
332 #define RTL8366RB_INTERRUPT_STATUS_REG 0x0442
333 #define RTL8366RB_NUM_INTERRUPT 14 /* 0..13 */
334
335 /* Port isolation registers */
336 #define RTL8366RB_PORT_ISO_BASE 0x0F08
337 #define RTL8366RB_PORT_ISO(pnum) (RTL8366RB_PORT_ISO_BASE + (pnum))
338 #define RTL8366RB_PORT_ISO_EN BIT(0)
339 #define RTL8366RB_PORT_ISO_PORTS_MASK GENMASK(7, 1)
340 #define RTL8366RB_PORT_ISO_PORTS(pmask) ((pmask) << 1)
341
342 /* bits 0..5 enable force when cleared */
343 #define RTL8366RB_MAC_FORCE_CTRL_REG 0x0F11
344
345 #define RTL8366RB_OAM_PARSER_REG 0x0F14
346 #define RTL8366RB_OAM_MULTIPLEXER_REG 0x0F15
347
348 #define RTL8366RB_GREEN_FEATURE_REG 0x0F51
349 #define RTL8366RB_GREEN_FEATURE_MSK 0x0007
350 #define RTL8366RB_GREEN_FEATURE_TX BIT(0)
351 #define RTL8366RB_GREEN_FEATURE_RX BIT(2)
352
353 enum rtl8366_ledgroup_mode {
354 RTL8366RB_LEDGROUP_OFF = 0x0,
355 RTL8366RB_LEDGROUP_DUP_COL = 0x1,
356 RTL8366RB_LEDGROUP_LINK_ACT = 0x2,
357 RTL8366RB_LEDGROUP_SPD1000 = 0x3,
358 RTL8366RB_LEDGROUP_SPD100 = 0x4,
359 RTL8366RB_LEDGROUP_SPD10 = 0x5,
360 RTL8366RB_LEDGROUP_SPD1000_ACT = 0x6,
361 RTL8366RB_LEDGROUP_SPD100_ACT = 0x7,
362 RTL8366RB_LEDGROUP_SPD10_ACT = 0x8,
363 RTL8366RB_LEDGROUP_SPD100_10_ACT = 0x9,
364 RTL8366RB_LEDGROUP_FIBER = 0xa,
365 RTL8366RB_LEDGROUP_AN_FAULT = 0xb,
366 RTL8366RB_LEDGROUP_LINK_RX = 0xc,
367 RTL8366RB_LEDGROUP_LINK_TX = 0xd,
368 RTL8366RB_LEDGROUP_MASTER = 0xe,
369 RTL8366RB_LEDGROUP_FORCE = 0xf,
370
371 __RTL8366RB_LEDGROUP_MODE_MAX
372 };
373
374 struct rtl8366rb_led {
375 u8 port_num;
376 u8 led_group;
377 struct realtek_priv *priv;
378 struct led_classdev cdev;
379 };
380
381 /**
382 * struct rtl8366rb - RTL8366RB-specific data
383 * @max_mtu: per-port max MTU setting
384 * @pvid_enabled: if PVID is set for respective port
385 * @leds: per-port and per-ledgroup led info
386 */
387 struct rtl8366rb {
388 unsigned int max_mtu[RTL8366RB_NUM_PORTS];
389 bool pvid_enabled[RTL8366RB_NUM_PORTS];
390 struct rtl8366rb_led leds[RTL8366RB_NUM_PORTS][RTL8366RB_NUM_LEDGROUPS];
391 };
392
393 static struct rtl8366_mib_counter rtl8366rb_mib_counters[] = {
394 { 0, 0, 4, "IfInOctets" },
395 { 0, 4, 4, "EtherStatsOctets" },
396 { 0, 8, 2, "EtherStatsUnderSizePkts" },
397 { 0, 10, 2, "EtherFragments" },
398 { 0, 12, 2, "EtherStatsPkts64Octets" },
399 { 0, 14, 2, "EtherStatsPkts65to127Octets" },
400 { 0, 16, 2, "EtherStatsPkts128to255Octets" },
401 { 0, 18, 2, "EtherStatsPkts256to511Octets" },
402 { 0, 20, 2, "EtherStatsPkts512to1023Octets" },
403 { 0, 22, 2, "EtherStatsPkts1024to1518Octets" },
404 { 0, 24, 2, "EtherOversizeStats" },
405 { 0, 26, 2, "EtherStatsJabbers" },
406 { 0, 28, 2, "IfInUcastPkts" },
407 { 0, 30, 2, "EtherStatsMulticastPkts" },
408 { 0, 32, 2, "EtherStatsBroadcastPkts" },
409 { 0, 34, 2, "EtherStatsDropEvents" },
410 { 0, 36, 2, "Dot3StatsFCSErrors" },
411 { 0, 38, 2, "Dot3StatsSymbolErrors" },
412 { 0, 40, 2, "Dot3InPauseFrames" },
413 { 0, 42, 2, "Dot3ControlInUnknownOpcodes" },
414 { 0, 44, 4, "IfOutOctets" },
415 { 0, 48, 2, "Dot3StatsSingleCollisionFrames" },
416 { 0, 50, 2, "Dot3StatMultipleCollisionFrames" },
417 { 0, 52, 2, "Dot3sDeferredTransmissions" },
418 { 0, 54, 2, "Dot3StatsLateCollisions" },
419 { 0, 56, 2, "EtherStatsCollisions" },
420 { 0, 58, 2, "Dot3StatsExcessiveCollisions" },
421 { 0, 60, 2, "Dot3OutPauseFrames" },
422 { 0, 62, 2, "Dot1dBasePortDelayExceededDiscards" },
423 { 0, 64, 2, "Dot1dTpPortInDiscards" },
424 { 0, 66, 2, "IfOutUcastPkts" },
425 { 0, 68, 2, "IfOutMulticastPkts" },
426 { 0, 70, 2, "IfOutBroadcastPkts" },
427 };
428
rtl8366rb_get_mib_counter(struct realtek_priv * priv,int port,struct rtl8366_mib_counter * mib,u64 * mibvalue)429 static int rtl8366rb_get_mib_counter(struct realtek_priv *priv,
430 int port,
431 struct rtl8366_mib_counter *mib,
432 u64 *mibvalue)
433 {
434 u32 addr, val;
435 int ret;
436 int i;
437
438 addr = RTL8366RB_MIB_COUNTER_BASE +
439 RTL8366RB_MIB_COUNTER_PORT_OFFSET * (port) +
440 mib->offset;
441
442 /* Writing access counter address first
443 * then ASIC will prepare 64bits counter wait for being retrived
444 */
445 ret = regmap_write(priv->map, addr, 0); /* Write whatever */
446 if (ret)
447 return ret;
448
449 /* Read MIB control register */
450 ret = regmap_read(priv->map, RTL8366RB_MIB_CTRL_REG, &val);
451 if (ret)
452 return -EIO;
453
454 if (val & RTL8366RB_MIB_CTRL_BUSY_MASK)
455 return -EBUSY;
456
457 if (val & RTL8366RB_MIB_CTRL_RESET_MASK)
458 return -EIO;
459
460 /* Read each individual MIB 16 bits at the time */
461 *mibvalue = 0;
462 for (i = mib->length; i > 0; i--) {
463 ret = regmap_read(priv->map, addr + (i - 1), &val);
464 if (ret)
465 return ret;
466 *mibvalue = (*mibvalue << 16) | (val & 0xFFFF);
467 }
468 return 0;
469 }
470
rtl8366rb_get_irqmask(struct irq_data * d)471 static u32 rtl8366rb_get_irqmask(struct irq_data *d)
472 {
473 int line = irqd_to_hwirq(d);
474 u32 val;
475
476 /* For line interrupts we combine link down in bits
477 * 6..11 with link up in bits 0..5 into one interrupt.
478 */
479 if (line < 12)
480 val = BIT(line) | BIT(line + 6);
481 else
482 val = BIT(line);
483 return val;
484 }
485
rtl8366rb_mask_irq(struct irq_data * d)486 static void rtl8366rb_mask_irq(struct irq_data *d)
487 {
488 struct realtek_priv *priv = irq_data_get_irq_chip_data(d);
489 int ret;
490
491 ret = regmap_update_bits(priv->map, RTL8366RB_INTERRUPT_MASK_REG,
492 rtl8366rb_get_irqmask(d), 0);
493 if (ret)
494 dev_err(priv->dev, "could not mask IRQ\n");
495 }
496
rtl8366rb_unmask_irq(struct irq_data * d)497 static void rtl8366rb_unmask_irq(struct irq_data *d)
498 {
499 struct realtek_priv *priv = irq_data_get_irq_chip_data(d);
500 int ret;
501
502 ret = regmap_update_bits(priv->map, RTL8366RB_INTERRUPT_MASK_REG,
503 rtl8366rb_get_irqmask(d),
504 rtl8366rb_get_irqmask(d));
505 if (ret)
506 dev_err(priv->dev, "could not unmask IRQ\n");
507 }
508
rtl8366rb_irq(int irq,void * data)509 static irqreturn_t rtl8366rb_irq(int irq, void *data)
510 {
511 struct realtek_priv *priv = data;
512 u32 stat;
513 int ret;
514
515 /* This clears the IRQ status register */
516 ret = regmap_read(priv->map, RTL8366RB_INTERRUPT_STATUS_REG,
517 &stat);
518 if (ret) {
519 dev_err(priv->dev, "can't read interrupt status\n");
520 return IRQ_NONE;
521 }
522 stat &= RTL8366RB_INTERRUPT_VALID;
523 if (!stat)
524 return IRQ_NONE;
525 while (stat) {
526 int line = __ffs(stat);
527 int child_irq;
528
529 stat &= ~BIT(line);
530 /* For line interrupts we combine link down in bits
531 * 6..11 with link up in bits 0..5 into one interrupt.
532 */
533 if (line < 12 && line > 5)
534 line -= 5;
535 child_irq = irq_find_mapping(priv->irqdomain, line);
536 handle_nested_irq(child_irq);
537 }
538 return IRQ_HANDLED;
539 }
540
541 static struct irq_chip rtl8366rb_irq_chip = {
542 .name = "RTL8366RB",
543 .irq_mask = rtl8366rb_mask_irq,
544 .irq_unmask = rtl8366rb_unmask_irq,
545 };
546
rtl8366rb_irq_map(struct irq_domain * domain,unsigned int irq,irq_hw_number_t hwirq)547 static int rtl8366rb_irq_map(struct irq_domain *domain, unsigned int irq,
548 irq_hw_number_t hwirq)
549 {
550 irq_set_chip_data(irq, domain->host_data);
551 irq_set_chip_and_handler(irq, &rtl8366rb_irq_chip, handle_simple_irq);
552 irq_set_nested_thread(irq, 1);
553 irq_set_noprobe(irq);
554
555 return 0;
556 }
557
rtl8366rb_irq_unmap(struct irq_domain * d,unsigned int irq)558 static void rtl8366rb_irq_unmap(struct irq_domain *d, unsigned int irq)
559 {
560 irq_set_nested_thread(irq, 0);
561 irq_set_chip_and_handler(irq, NULL, NULL);
562 irq_set_chip_data(irq, NULL);
563 }
564
565 static const struct irq_domain_ops rtl8366rb_irqdomain_ops = {
566 .map = rtl8366rb_irq_map,
567 .unmap = rtl8366rb_irq_unmap,
568 .xlate = irq_domain_xlate_onecell,
569 };
570
rtl8366rb_setup_cascaded_irq(struct realtek_priv * priv)571 static int rtl8366rb_setup_cascaded_irq(struct realtek_priv *priv)
572 {
573 struct device_node *intc;
574 unsigned long irq_trig;
575 int irq;
576 int ret;
577 u32 val;
578 int i;
579
580 intc = of_get_child_by_name(priv->dev->of_node, "interrupt-controller");
581 if (!intc) {
582 dev_err(priv->dev, "missing child interrupt-controller node\n");
583 return -EINVAL;
584 }
585 /* RB8366RB IRQs cascade off this one */
586 irq = of_irq_get(intc, 0);
587 if (irq <= 0) {
588 dev_err(priv->dev, "failed to get parent IRQ\n");
589 ret = irq ? irq : -EINVAL;
590 goto out_put_node;
591 }
592
593 /* This clears the IRQ status register */
594 ret = regmap_read(priv->map, RTL8366RB_INTERRUPT_STATUS_REG,
595 &val);
596 if (ret) {
597 dev_err(priv->dev, "can't read interrupt status\n");
598 goto out_put_node;
599 }
600
601 /* Fetch IRQ edge information from the descriptor */
602 irq_trig = irq_get_trigger_type(irq);
603 switch (irq_trig) {
604 case IRQF_TRIGGER_RISING:
605 case IRQF_TRIGGER_HIGH:
606 dev_info(priv->dev, "active high/rising IRQ\n");
607 val = 0;
608 break;
609 case IRQF_TRIGGER_FALLING:
610 case IRQF_TRIGGER_LOW:
611 dev_info(priv->dev, "active low/falling IRQ\n");
612 val = RTL8366RB_INTERRUPT_POLARITY;
613 break;
614 }
615 ret = regmap_update_bits(priv->map, RTL8366RB_INTERRUPT_CONTROL_REG,
616 RTL8366RB_INTERRUPT_POLARITY,
617 val);
618 if (ret) {
619 dev_err(priv->dev, "could not configure IRQ polarity\n");
620 goto out_put_node;
621 }
622
623 ret = devm_request_threaded_irq(priv->dev, irq, NULL,
624 rtl8366rb_irq, IRQF_ONESHOT,
625 "RTL8366RB", priv);
626 if (ret) {
627 dev_err(priv->dev, "unable to request irq: %d\n", ret);
628 goto out_put_node;
629 }
630 priv->irqdomain = irq_domain_add_linear(intc,
631 RTL8366RB_NUM_INTERRUPT,
632 &rtl8366rb_irqdomain_ops,
633 priv);
634 if (!priv->irqdomain) {
635 dev_err(priv->dev, "failed to create IRQ domain\n");
636 ret = -EINVAL;
637 goto out_put_node;
638 }
639 for (i = 0; i < priv->num_ports; i++)
640 irq_set_parent(irq_create_mapping(priv->irqdomain, i), irq);
641
642 out_put_node:
643 of_node_put(intc);
644 return ret;
645 }
646
rtl8366rb_set_addr(struct realtek_priv * priv)647 static int rtl8366rb_set_addr(struct realtek_priv *priv)
648 {
649 u8 addr[ETH_ALEN];
650 u16 val;
651 int ret;
652
653 eth_random_addr(addr);
654
655 dev_info(priv->dev, "set MAC: %02X:%02X:%02X:%02X:%02X:%02X\n",
656 addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
657 val = addr[0] << 8 | addr[1];
658 ret = regmap_write(priv->map, RTL8366RB_SMAR0, val);
659 if (ret)
660 return ret;
661 val = addr[2] << 8 | addr[3];
662 ret = regmap_write(priv->map, RTL8366RB_SMAR1, val);
663 if (ret)
664 return ret;
665 val = addr[4] << 8 | addr[5];
666 ret = regmap_write(priv->map, RTL8366RB_SMAR2, val);
667 if (ret)
668 return ret;
669
670 return 0;
671 }
672
673 /* Found in a vendor driver */
674
675 /* Struct for handling the jam tables' entries */
676 struct rtl8366rb_jam_tbl_entry {
677 u16 reg;
678 u16 val;
679 };
680
681 /* For the "version 0" early silicon, appear in most source releases */
682 static const struct rtl8366rb_jam_tbl_entry rtl8366rb_init_jam_ver_0[] = {
683 {0x000B, 0x0001}, {0x03A6, 0x0100}, {0x03A7, 0x0001}, {0x02D1, 0x3FFF},
684 {0x02D2, 0x3FFF}, {0x02D3, 0x3FFF}, {0x02D4, 0x3FFF}, {0x02D5, 0x3FFF},
685 {0x02D6, 0x3FFF}, {0x02D7, 0x3FFF}, {0x02D8, 0x3FFF}, {0x022B, 0x0688},
686 {0x022C, 0x0FAC}, {0x03D0, 0x4688}, {0x03D1, 0x01F5}, {0x0000, 0x0830},
687 {0x02F9, 0x0200}, {0x02F7, 0x7FFF}, {0x02F8, 0x03FF}, {0x0080, 0x03E8},
688 {0x0081, 0x00CE}, {0x0082, 0x00DA}, {0x0083, 0x0230}, {0xBE0F, 0x2000},
689 {0x0231, 0x422A}, {0x0232, 0x422A}, {0x0233, 0x422A}, {0x0234, 0x422A},
690 {0x0235, 0x422A}, {0x0236, 0x422A}, {0x0237, 0x422A}, {0x0238, 0x422A},
691 {0x0239, 0x422A}, {0x023A, 0x422A}, {0x023B, 0x422A}, {0x023C, 0x422A},
692 {0x023D, 0x422A}, {0x023E, 0x422A}, {0x023F, 0x422A}, {0x0240, 0x422A},
693 {0x0241, 0x422A}, {0x0242, 0x422A}, {0x0243, 0x422A}, {0x0244, 0x422A},
694 {0x0245, 0x422A}, {0x0246, 0x422A}, {0x0247, 0x422A}, {0x0248, 0x422A},
695 {0x0249, 0x0146}, {0x024A, 0x0146}, {0x024B, 0x0146}, {0xBE03, 0xC961},
696 {0x024D, 0x0146}, {0x024E, 0x0146}, {0x024F, 0x0146}, {0x0250, 0x0146},
697 {0xBE64, 0x0226}, {0x0252, 0x0146}, {0x0253, 0x0146}, {0x024C, 0x0146},
698 {0x0251, 0x0146}, {0x0254, 0x0146}, {0xBE62, 0x3FD0}, {0x0084, 0x0320},
699 {0x0255, 0x0146}, {0x0256, 0x0146}, {0x0257, 0x0146}, {0x0258, 0x0146},
700 {0x0259, 0x0146}, {0x025A, 0x0146}, {0x025B, 0x0146}, {0x025C, 0x0146},
701 {0x025D, 0x0146}, {0x025E, 0x0146}, {0x025F, 0x0146}, {0x0260, 0x0146},
702 {0x0261, 0xA23F}, {0x0262, 0x0294}, {0x0263, 0xA23F}, {0x0264, 0x0294},
703 {0x0265, 0xA23F}, {0x0266, 0x0294}, {0x0267, 0xA23F}, {0x0268, 0x0294},
704 {0x0269, 0xA23F}, {0x026A, 0x0294}, {0x026B, 0xA23F}, {0x026C, 0x0294},
705 {0x026D, 0xA23F}, {0x026E, 0x0294}, {0x026F, 0xA23F}, {0x0270, 0x0294},
706 {0x02F5, 0x0048}, {0xBE09, 0x0E00}, {0xBE1E, 0x0FA0}, {0xBE14, 0x8448},
707 {0xBE15, 0x1007}, {0xBE4A, 0xA284}, {0xC454, 0x3F0B}, {0xC474, 0x3F0B},
708 {0xBE48, 0x3672}, {0xBE4B, 0x17A7}, {0xBE4C, 0x0B15}, {0xBE52, 0x0EDD},
709 {0xBE49, 0x8C00}, {0xBE5B, 0x785C}, {0xBE5C, 0x785C}, {0xBE5D, 0x785C},
710 {0xBE61, 0x368A}, {0xBE63, 0x9B84}, {0xC456, 0xCC13}, {0xC476, 0xCC13},
711 {0xBE65, 0x307D}, {0xBE6D, 0x0005}, {0xBE6E, 0xE120}, {0xBE2E, 0x7BAF},
712 };
713
714 /* This v1 init sequence is from Belkin F5D8235 U-Boot release */
715 static const struct rtl8366rb_jam_tbl_entry rtl8366rb_init_jam_ver_1[] = {
716 {0x0000, 0x0830}, {0x0001, 0x8000}, {0x0400, 0x8130}, {0xBE78, 0x3C3C},
717 {0x0431, 0x5432}, {0xBE37, 0x0CE4}, {0x02FA, 0xFFDF}, {0x02FB, 0xFFE0},
718 {0xC44C, 0x1585}, {0xC44C, 0x1185}, {0xC44C, 0x1585}, {0xC46C, 0x1585},
719 {0xC46C, 0x1185}, {0xC46C, 0x1585}, {0xC451, 0x2135}, {0xC471, 0x2135},
720 {0xBE10, 0x8140}, {0xBE15, 0x0007}, {0xBE6E, 0xE120}, {0xBE69, 0xD20F},
721 {0xBE6B, 0x0320}, {0xBE24, 0xB000}, {0xBE23, 0xFF51}, {0xBE22, 0xDF20},
722 {0xBE21, 0x0140}, {0xBE20, 0x00BB}, {0xBE24, 0xB800}, {0xBE24, 0x0000},
723 {0xBE24, 0x7000}, {0xBE23, 0xFF51}, {0xBE22, 0xDF60}, {0xBE21, 0x0140},
724 {0xBE20, 0x0077}, {0xBE24, 0x7800}, {0xBE24, 0x0000}, {0xBE2E, 0x7B7A},
725 {0xBE36, 0x0CE4}, {0x02F5, 0x0048}, {0xBE77, 0x2940}, {0x000A, 0x83E0},
726 {0xBE79, 0x3C3C}, {0xBE00, 0x1340},
727 };
728
729 /* This v2 init sequence is from Belkin F5D8235 U-Boot release */
730 static const struct rtl8366rb_jam_tbl_entry rtl8366rb_init_jam_ver_2[] = {
731 {0x0450, 0x0000}, {0x0400, 0x8130}, {0x000A, 0x83ED}, {0x0431, 0x5432},
732 {0xC44F, 0x6250}, {0xC46F, 0x6250}, {0xC456, 0x0C14}, {0xC476, 0x0C14},
733 {0xC44C, 0x1C85}, {0xC44C, 0x1885}, {0xC44C, 0x1C85}, {0xC46C, 0x1C85},
734 {0xC46C, 0x1885}, {0xC46C, 0x1C85}, {0xC44C, 0x0885}, {0xC44C, 0x0881},
735 {0xC44C, 0x0885}, {0xC46C, 0x0885}, {0xC46C, 0x0881}, {0xC46C, 0x0885},
736 {0xBE2E, 0x7BA7}, {0xBE36, 0x1000}, {0xBE37, 0x1000}, {0x8000, 0x0001},
737 {0xBE69, 0xD50F}, {0x8000, 0x0000}, {0xBE69, 0xD50F}, {0xBE6E, 0x0320},
738 {0xBE77, 0x2940}, {0xBE78, 0x3C3C}, {0xBE79, 0x3C3C}, {0xBE6E, 0xE120},
739 {0x8000, 0x0001}, {0xBE15, 0x1007}, {0x8000, 0x0000}, {0xBE15, 0x1007},
740 {0xBE14, 0x0448}, {0xBE1E, 0x00A0}, {0xBE10, 0x8160}, {0xBE10, 0x8140},
741 {0xBE00, 0x1340}, {0x0F51, 0x0010},
742 };
743
744 /* Appears in a DDWRT code dump */
745 static const struct rtl8366rb_jam_tbl_entry rtl8366rb_init_jam_ver_3[] = {
746 {0x0000, 0x0830}, {0x0400, 0x8130}, {0x000A, 0x83ED}, {0x0431, 0x5432},
747 {0x0F51, 0x0017}, {0x02F5, 0x0048}, {0x02FA, 0xFFDF}, {0x02FB, 0xFFE0},
748 {0xC456, 0x0C14}, {0xC476, 0x0C14}, {0xC454, 0x3F8B}, {0xC474, 0x3F8B},
749 {0xC450, 0x2071}, {0xC470, 0x2071}, {0xC451, 0x226B}, {0xC471, 0x226B},
750 {0xC452, 0xA293}, {0xC472, 0xA293}, {0xC44C, 0x1585}, {0xC44C, 0x1185},
751 {0xC44C, 0x1585}, {0xC46C, 0x1585}, {0xC46C, 0x1185}, {0xC46C, 0x1585},
752 {0xC44C, 0x0185}, {0xC44C, 0x0181}, {0xC44C, 0x0185}, {0xC46C, 0x0185},
753 {0xC46C, 0x0181}, {0xC46C, 0x0185}, {0xBE24, 0xB000}, {0xBE23, 0xFF51},
754 {0xBE22, 0xDF20}, {0xBE21, 0x0140}, {0xBE20, 0x00BB}, {0xBE24, 0xB800},
755 {0xBE24, 0x0000}, {0xBE24, 0x7000}, {0xBE23, 0xFF51}, {0xBE22, 0xDF60},
756 {0xBE21, 0x0140}, {0xBE20, 0x0077}, {0xBE24, 0x7800}, {0xBE24, 0x0000},
757 {0xBE2E, 0x7BA7}, {0xBE36, 0x1000}, {0xBE37, 0x1000}, {0x8000, 0x0001},
758 {0xBE69, 0xD50F}, {0x8000, 0x0000}, {0xBE69, 0xD50F}, {0xBE6B, 0x0320},
759 {0xBE77, 0x2800}, {0xBE78, 0x3C3C}, {0xBE79, 0x3C3C}, {0xBE6E, 0xE120},
760 {0x8000, 0x0001}, {0xBE10, 0x8140}, {0x8000, 0x0000}, {0xBE10, 0x8140},
761 {0xBE15, 0x1007}, {0xBE14, 0x0448}, {0xBE1E, 0x00A0}, {0xBE10, 0x8160},
762 {0xBE10, 0x8140}, {0xBE00, 0x1340}, {0x0450, 0x0000}, {0x0401, 0x0000},
763 };
764
765 /* Belkin F5D8235 v1, "belkin,f5d8235-v1" */
766 static const struct rtl8366rb_jam_tbl_entry rtl8366rb_init_jam_f5d8235[] = {
767 {0x0242, 0x02BF}, {0x0245, 0x02BF}, {0x0248, 0x02BF}, {0x024B, 0x02BF},
768 {0x024E, 0x02BF}, {0x0251, 0x02BF}, {0x0254, 0x0A3F}, {0x0256, 0x0A3F},
769 {0x0258, 0x0A3F}, {0x025A, 0x0A3F}, {0x025C, 0x0A3F}, {0x025E, 0x0A3F},
770 {0x0263, 0x007C}, {0x0100, 0x0004}, {0xBE5B, 0x3500}, {0x800E, 0x200F},
771 {0xBE1D, 0x0F00}, {0x8001, 0x5011}, {0x800A, 0xA2F4}, {0x800B, 0x17A3},
772 {0xBE4B, 0x17A3}, {0xBE41, 0x5011}, {0xBE17, 0x2100}, {0x8000, 0x8304},
773 {0xBE40, 0x8304}, {0xBE4A, 0xA2F4}, {0x800C, 0xA8D5}, {0x8014, 0x5500},
774 {0x8015, 0x0004}, {0xBE4C, 0xA8D5}, {0xBE59, 0x0008}, {0xBE09, 0x0E00},
775 {0xBE36, 0x1036}, {0xBE37, 0x1036}, {0x800D, 0x00FF}, {0xBE4D, 0x00FF},
776 };
777
778 /* DGN3500, "netgear,dgn3500", "netgear,dgn3500b" */
779 static const struct rtl8366rb_jam_tbl_entry rtl8366rb_init_jam_dgn3500[] = {
780 {0x0000, 0x0830}, {0x0400, 0x8130}, {0x000A, 0x83ED}, {0x0F51, 0x0017},
781 {0x02F5, 0x0048}, {0x02FA, 0xFFDF}, {0x02FB, 0xFFE0}, {0x0450, 0x0000},
782 {0x0401, 0x0000}, {0x0431, 0x0960},
783 };
784
785 /* This jam table activates "green ethernet", which means low power mode
786 * and is claimed to detect the cable length and not use more power than
787 * necessary, and the ports should enter power saving mode 10 seconds after
788 * a cable is disconnected. Seems to always be the same.
789 */
790 static const struct rtl8366rb_jam_tbl_entry rtl8366rb_green_jam[] = {
791 {0xBE78, 0x323C}, {0xBE77, 0x5000}, {0xBE2E, 0x7BA7},
792 {0xBE59, 0x3459}, {0xBE5A, 0x745A}, {0xBE5B, 0x785C},
793 {0xBE5C, 0x785C}, {0xBE6E, 0xE120}, {0xBE79, 0x323C},
794 };
795
796 /* Function that jams the tables in the proper registers */
rtl8366rb_jam_table(const struct rtl8366rb_jam_tbl_entry * jam_table,int jam_size,struct realtek_priv * priv,bool write_dbg)797 static int rtl8366rb_jam_table(const struct rtl8366rb_jam_tbl_entry *jam_table,
798 int jam_size, struct realtek_priv *priv,
799 bool write_dbg)
800 {
801 u32 val;
802 int ret;
803 int i;
804
805 for (i = 0; i < jam_size; i++) {
806 if ((jam_table[i].reg & 0xBE00) == 0xBE00) {
807 ret = regmap_read(priv->map,
808 RTL8366RB_PHY_ACCESS_BUSY_REG,
809 &val);
810 if (ret)
811 return ret;
812 if (!(val & RTL8366RB_PHY_INT_BUSY)) {
813 ret = regmap_write(priv->map,
814 RTL8366RB_PHY_ACCESS_CTRL_REG,
815 RTL8366RB_PHY_CTRL_WRITE);
816 if (ret)
817 return ret;
818 }
819 }
820 if (write_dbg)
821 dev_dbg(priv->dev, "jam %04x into register %04x\n",
822 jam_table[i].val,
823 jam_table[i].reg);
824 ret = regmap_write(priv->map,
825 jam_table[i].reg,
826 jam_table[i].val);
827 if (ret)
828 return ret;
829 }
830 return 0;
831 }
832
rb8366rb_set_ledgroup_mode(struct realtek_priv * priv,u8 led_group,enum rtl8366_ledgroup_mode mode)833 static int rb8366rb_set_ledgroup_mode(struct realtek_priv *priv,
834 u8 led_group,
835 enum rtl8366_ledgroup_mode mode)
836 {
837 int ret;
838 u32 val;
839
840 val = mode << RTL8366RB_LED_CTRL_OFFSET(led_group);
841
842 ret = regmap_update_bits(priv->map,
843 RTL8366RB_LED_CTRL_REG,
844 RTL8366RB_LED_CTRL_MASK(led_group),
845 val);
846 if (ret)
847 return ret;
848
849 return 0;
850 }
851
rtl8366rb_led_group_port_mask(u8 led_group,u8 port)852 static inline u32 rtl8366rb_led_group_port_mask(u8 led_group, u8 port)
853 {
854 switch (led_group) {
855 case 0:
856 return FIELD_PREP(RTL8366RB_LED_0_X_CTRL_MASK, BIT(port));
857 case 1:
858 return FIELD_PREP(RTL8366RB_LED_0_X_CTRL_MASK, BIT(port));
859 case 2:
860 return FIELD_PREP(RTL8366RB_LED_0_X_CTRL_MASK, BIT(port));
861 case 3:
862 return FIELD_PREP(RTL8366RB_LED_0_X_CTRL_MASK, BIT(port));
863 default:
864 return 0;
865 }
866 }
867
rb8366rb_get_port_led(struct rtl8366rb_led * led)868 static int rb8366rb_get_port_led(struct rtl8366rb_led *led)
869 {
870 struct realtek_priv *priv = led->priv;
871 u8 led_group = led->led_group;
872 u8 port_num = led->port_num;
873 int ret;
874 u32 val;
875
876 ret = regmap_read(priv->map, RTL8366RB_LED_X_X_CTRL_REG(led_group),
877 &val);
878 if (ret) {
879 dev_err(priv->dev, "error reading LED on port %d group %d\n",
880 led_group, port_num);
881 return ret;
882 }
883
884 return !!(val & rtl8366rb_led_group_port_mask(led_group, port_num));
885 }
886
rb8366rb_set_port_led(struct rtl8366rb_led * led,bool enable)887 static int rb8366rb_set_port_led(struct rtl8366rb_led *led, bool enable)
888 {
889 struct realtek_priv *priv = led->priv;
890 u8 led_group = led->led_group;
891 u8 port_num = led->port_num;
892 int ret;
893
894 ret = regmap_update_bits(priv->map,
895 RTL8366RB_LED_X_X_CTRL_REG(led_group),
896 rtl8366rb_led_group_port_mask(led_group,
897 port_num),
898 enable ? 0xffff : 0);
899 if (ret) {
900 dev_err(priv->dev, "error updating LED on port %d group %d\n",
901 led_group, port_num);
902 return ret;
903 }
904
905 /* Change the LED group to manual controlled LEDs if required */
906 ret = rb8366rb_set_ledgroup_mode(priv, led_group,
907 RTL8366RB_LEDGROUP_FORCE);
908
909 if (ret) {
910 dev_err(priv->dev, "error updating LED GROUP group %d\n",
911 led_group);
912 return ret;
913 }
914
915 return 0;
916 }
917
918 static int
rtl8366rb_cled_brightness_set_blocking(struct led_classdev * ldev,enum led_brightness brightness)919 rtl8366rb_cled_brightness_set_blocking(struct led_classdev *ldev,
920 enum led_brightness brightness)
921 {
922 struct rtl8366rb_led *led = container_of(ldev, struct rtl8366rb_led,
923 cdev);
924
925 return rb8366rb_set_port_led(led, brightness == LED_ON);
926 }
927
rtl8366rb_setup_led(struct realtek_priv * priv,struct dsa_port * dp,struct fwnode_handle * led_fwnode)928 static int rtl8366rb_setup_led(struct realtek_priv *priv, struct dsa_port *dp,
929 struct fwnode_handle *led_fwnode)
930 {
931 struct rtl8366rb *rb = priv->chip_data;
932 struct led_init_data init_data = { };
933 enum led_default_state state;
934 struct rtl8366rb_led *led;
935 u32 led_group;
936 int ret;
937
938 ret = fwnode_property_read_u32(led_fwnode, "reg", &led_group);
939 if (ret)
940 return ret;
941
942 if (led_group >= RTL8366RB_NUM_LEDGROUPS) {
943 dev_warn(priv->dev, "Invalid LED reg %d defined for port %d",
944 led_group, dp->index);
945 return -EINVAL;
946 }
947
948 led = &rb->leds[dp->index][led_group];
949 led->port_num = dp->index;
950 led->led_group = led_group;
951 led->priv = priv;
952
953 state = led_init_default_state_get(led_fwnode);
954 switch (state) {
955 case LEDS_DEFSTATE_ON:
956 led->cdev.brightness = 1;
957 rb8366rb_set_port_led(led, 1);
958 break;
959 case LEDS_DEFSTATE_KEEP:
960 led->cdev.brightness =
961 rb8366rb_get_port_led(led);
962 break;
963 case LEDS_DEFSTATE_OFF:
964 default:
965 led->cdev.brightness = 0;
966 rb8366rb_set_port_led(led, 0);
967 }
968
969 led->cdev.max_brightness = 1;
970 led->cdev.brightness_set_blocking =
971 rtl8366rb_cled_brightness_set_blocking;
972 init_data.fwnode = led_fwnode;
973 init_data.devname_mandatory = true;
974
975 init_data.devicename = kasprintf(GFP_KERNEL, "Realtek-%d:0%d:%d",
976 dp->ds->index, dp->index, led_group);
977 if (!init_data.devicename)
978 return -ENOMEM;
979
980 ret = devm_led_classdev_register_ext(priv->dev, &led->cdev, &init_data);
981 if (ret) {
982 dev_warn(priv->dev, "Failed to init LED %d for port %d",
983 led_group, dp->index);
984 return ret;
985 }
986
987 return 0;
988 }
989
rtl8366rb_setup_all_leds_off(struct realtek_priv * priv)990 static int rtl8366rb_setup_all_leds_off(struct realtek_priv *priv)
991 {
992 int ret = 0;
993 int i;
994
995 regmap_update_bits(priv->map,
996 RTL8366RB_INTERRUPT_CONTROL_REG,
997 RTL8366RB_P4_RGMII_LED,
998 0);
999
1000 for (i = 0; i < RTL8366RB_NUM_LEDGROUPS; i++) {
1001 ret = rb8366rb_set_ledgroup_mode(priv, i,
1002 RTL8366RB_LEDGROUP_OFF);
1003 if (ret)
1004 return ret;
1005 }
1006
1007 return ret;
1008 }
1009
rtl8366rb_setup_leds(struct realtek_priv * priv)1010 static int rtl8366rb_setup_leds(struct realtek_priv *priv)
1011 {
1012 struct dsa_switch *ds = &priv->ds;
1013 struct device_node *leds_np;
1014 struct dsa_port *dp;
1015 int ret = 0;
1016
1017 dsa_switch_for_each_port(dp, ds) {
1018 if (!dp->dn)
1019 continue;
1020
1021 leds_np = of_get_child_by_name(dp->dn, "leds");
1022 if (!leds_np) {
1023 dev_dbg(priv->dev, "No leds defined for port %d",
1024 dp->index);
1025 continue;
1026 }
1027
1028 for_each_child_of_node_scoped(leds_np, led_np) {
1029 ret = rtl8366rb_setup_led(priv, dp,
1030 of_fwnode_handle(led_np));
1031 if (ret)
1032 break;
1033 }
1034
1035 of_node_put(leds_np);
1036 if (ret)
1037 return ret;
1038 }
1039 return 0;
1040 }
1041
rtl8366rb_setup(struct dsa_switch * ds)1042 static int rtl8366rb_setup(struct dsa_switch *ds)
1043 {
1044 struct realtek_priv *priv = ds->priv;
1045 const struct rtl8366rb_jam_tbl_entry *jam_table;
1046 struct rtl8366rb *rb;
1047 u32 chip_ver = 0;
1048 u32 chip_id = 0;
1049 int jam_size;
1050 int ret;
1051 int i;
1052
1053 rb = priv->chip_data;
1054
1055 ret = regmap_read(priv->map, RTL8366RB_CHIP_ID_REG, &chip_id);
1056 if (ret) {
1057 dev_err(priv->dev, "unable to read chip id\n");
1058 return ret;
1059 }
1060
1061 switch (chip_id) {
1062 case RTL8366RB_CHIP_ID_8366:
1063 break;
1064 default:
1065 dev_err(priv->dev, "unknown chip id (%04x)\n", chip_id);
1066 return -ENODEV;
1067 }
1068
1069 ret = regmap_read(priv->map, RTL8366RB_CHIP_VERSION_CTRL_REG,
1070 &chip_ver);
1071 if (ret) {
1072 dev_err(priv->dev, "unable to read chip version\n");
1073 return ret;
1074 }
1075
1076 dev_info(priv->dev, "RTL%04x ver %u chip found\n",
1077 chip_id, chip_ver & RTL8366RB_CHIP_VERSION_MASK);
1078
1079 /* Do the init dance using the right jam table */
1080 switch (chip_ver) {
1081 case 0:
1082 jam_table = rtl8366rb_init_jam_ver_0;
1083 jam_size = ARRAY_SIZE(rtl8366rb_init_jam_ver_0);
1084 break;
1085 case 1:
1086 jam_table = rtl8366rb_init_jam_ver_1;
1087 jam_size = ARRAY_SIZE(rtl8366rb_init_jam_ver_1);
1088 break;
1089 case 2:
1090 jam_table = rtl8366rb_init_jam_ver_2;
1091 jam_size = ARRAY_SIZE(rtl8366rb_init_jam_ver_2);
1092 break;
1093 default:
1094 jam_table = rtl8366rb_init_jam_ver_3;
1095 jam_size = ARRAY_SIZE(rtl8366rb_init_jam_ver_3);
1096 break;
1097 }
1098
1099 /* Special jam tables for special routers
1100 * TODO: are these necessary? Maintainers, please test
1101 * without them, using just the off-the-shelf tables.
1102 */
1103 if (of_machine_is_compatible("belkin,f5d8235-v1")) {
1104 jam_table = rtl8366rb_init_jam_f5d8235;
1105 jam_size = ARRAY_SIZE(rtl8366rb_init_jam_f5d8235);
1106 }
1107 if (of_machine_is_compatible("netgear,dgn3500") ||
1108 of_machine_is_compatible("netgear,dgn3500b")) {
1109 jam_table = rtl8366rb_init_jam_dgn3500;
1110 jam_size = ARRAY_SIZE(rtl8366rb_init_jam_dgn3500);
1111 }
1112
1113 ret = rtl8366rb_jam_table(jam_table, jam_size, priv, true);
1114 if (ret)
1115 return ret;
1116
1117 /* Isolate all user ports so they can only send packets to itself and the CPU port */
1118 for (i = 0; i < RTL8366RB_PORT_NUM_CPU; i++) {
1119 ret = regmap_write(priv->map, RTL8366RB_PORT_ISO(i),
1120 RTL8366RB_PORT_ISO_PORTS(BIT(RTL8366RB_PORT_NUM_CPU)) |
1121 RTL8366RB_PORT_ISO_EN);
1122 if (ret)
1123 return ret;
1124 }
1125 /* CPU port can send packets to all ports */
1126 ret = regmap_write(priv->map, RTL8366RB_PORT_ISO(RTL8366RB_PORT_NUM_CPU),
1127 RTL8366RB_PORT_ISO_PORTS(dsa_user_ports(ds)) |
1128 RTL8366RB_PORT_ISO_EN);
1129 if (ret)
1130 return ret;
1131
1132 /* Set up the "green ethernet" feature */
1133 ret = rtl8366rb_jam_table(rtl8366rb_green_jam,
1134 ARRAY_SIZE(rtl8366rb_green_jam), priv, false);
1135 if (ret)
1136 return ret;
1137
1138 ret = regmap_write(priv->map,
1139 RTL8366RB_GREEN_FEATURE_REG,
1140 (chip_ver == 1) ? 0x0007 : 0x0003);
1141 if (ret)
1142 return ret;
1143
1144 /* Vendor driver sets 0x240 in registers 0xc and 0xd (undocumented) */
1145 ret = regmap_write(priv->map, 0x0c, 0x240);
1146 if (ret)
1147 return ret;
1148 ret = regmap_write(priv->map, 0x0d, 0x240);
1149 if (ret)
1150 return ret;
1151
1152 /* Set some random MAC address */
1153 ret = rtl8366rb_set_addr(priv);
1154 if (ret)
1155 return ret;
1156
1157 /* Enable CPU port with custom DSA tag 8899.
1158 *
1159 * If you set RTL8366RB_CPU_NO_TAG (bit 15) in this register
1160 * the custom tag is turned off.
1161 */
1162 ret = regmap_update_bits(priv->map, RTL8366RB_CPU_CTRL_REG,
1163 0xFFFF,
1164 BIT(priv->cpu_port));
1165 if (ret)
1166 return ret;
1167
1168 /* Make sure we default-enable the fixed CPU port */
1169 ret = regmap_update_bits(priv->map, RTL8366RB_PECR,
1170 BIT(priv->cpu_port),
1171 0);
1172 if (ret)
1173 return ret;
1174
1175 /* Set default maximum packet length to 1536 bytes */
1176 ret = regmap_update_bits(priv->map, RTL8366RB_SGCR,
1177 RTL8366RB_SGCR_MAX_LENGTH_MASK,
1178 RTL8366RB_SGCR_MAX_LENGTH_1536);
1179 if (ret)
1180 return ret;
1181 for (i = 0; i < RTL8366RB_NUM_PORTS; i++) {
1182 if (i == priv->cpu_port)
1183 /* CPU port need to also accept the tag */
1184 rb->max_mtu[i] = ETH_DATA_LEN + RTL8366RB_CPU_TAG_SIZE;
1185 else
1186 rb->max_mtu[i] = ETH_DATA_LEN;
1187 }
1188
1189 /* Disable learning for all ports */
1190 ret = regmap_write(priv->map, RTL8366RB_PORT_LEARNDIS_CTRL,
1191 RTL8366RB_PORT_ALL);
1192 if (ret)
1193 return ret;
1194
1195 /* Enable auto ageing for all ports */
1196 ret = regmap_write(priv->map, RTL8366RB_SECURITY_CTRL, 0);
1197 if (ret)
1198 return ret;
1199
1200 /* Port 4 setup: this enables Port 4, usually the WAN port,
1201 * common PHY IO mode is apparently mode 0, and this is not what
1202 * the port is initialized to. There is no explanation of the
1203 * IO modes in the Realtek source code, if your WAN port is
1204 * connected to something exotic such as fiber, then this might
1205 * be worth experimenting with.
1206 */
1207 ret = regmap_update_bits(priv->map, RTL8366RB_PMC0,
1208 RTL8366RB_PMC0_P4_IOMODE_MASK,
1209 0 << RTL8366RB_PMC0_P4_IOMODE_SHIFT);
1210 if (ret)
1211 return ret;
1212
1213 /* Accept all packets by default, we enable filtering on-demand */
1214 ret = regmap_write(priv->map, RTL8366RB_VLAN_INGRESS_CTRL1_REG,
1215 0);
1216 if (ret)
1217 return ret;
1218 ret = regmap_write(priv->map, RTL8366RB_VLAN_INGRESS_CTRL2_REG,
1219 0);
1220 if (ret)
1221 return ret;
1222
1223 /* Don't drop packets whose DA has not been learned */
1224 ret = regmap_update_bits(priv->map, RTL8366RB_SSCR2,
1225 RTL8366RB_SSCR2_DROP_UNKNOWN_DA, 0);
1226 if (ret)
1227 return ret;
1228
1229 /* Set blinking, used by all LED groups using HW triggers.
1230 * TODO: make this configurable
1231 */
1232 ret = regmap_update_bits(priv->map, RTL8366RB_LED_BLINKRATE_REG,
1233 RTL8366RB_LED_BLINKRATE_MASK,
1234 RTL8366RB_LED_BLINKRATE_56MS);
1235 if (ret)
1236 return ret;
1237
1238 /* Set up LED activity:
1239 * Each port has 4 LEDs on fixed groups. Each group shares the same
1240 * hardware trigger across all ports. LEDs can only be indiviually
1241 * controlled setting the LED group to fixed mode and using the driver
1242 * to toggle them LEDs on/off.
1243 */
1244 if (priv->leds_disabled) {
1245 ret = rtl8366rb_setup_all_leds_off(priv);
1246 if (ret)
1247 return ret;
1248 } else {
1249 ret = rtl8366rb_setup_leds(priv);
1250 if (ret)
1251 return ret;
1252 }
1253
1254 ret = rtl8366_reset_vlan(priv);
1255 if (ret)
1256 return ret;
1257
1258 ret = rtl8366rb_setup_cascaded_irq(priv);
1259 if (ret)
1260 dev_info(priv->dev, "no interrupt support\n");
1261
1262 ret = rtl83xx_setup_user_mdio(ds);
1263 if (ret) {
1264 dev_err(priv->dev, "could not set up MDIO bus\n");
1265 return -ENODEV;
1266 }
1267
1268 return 0;
1269 }
1270
rtl8366_get_tag_protocol(struct dsa_switch * ds,int port,enum dsa_tag_protocol mp)1271 static enum dsa_tag_protocol rtl8366_get_tag_protocol(struct dsa_switch *ds,
1272 int port,
1273 enum dsa_tag_protocol mp)
1274 {
1275 /* This switch uses the 4 byte protocol A Realtek DSA tag */
1276 return DSA_TAG_PROTO_RTL4_A;
1277 }
1278
rtl8366rb_phylink_get_caps(struct dsa_switch * ds,int port,struct phylink_config * config)1279 static void rtl8366rb_phylink_get_caps(struct dsa_switch *ds, int port,
1280 struct phylink_config *config)
1281 {
1282 unsigned long *interfaces = config->supported_interfaces;
1283 struct realtek_priv *priv = ds->priv;
1284
1285 if (port == priv->cpu_port) {
1286 __set_bit(PHY_INTERFACE_MODE_MII, interfaces);
1287 __set_bit(PHY_INTERFACE_MODE_GMII, interfaces);
1288 /* REVMII only supports 100M FD */
1289 __set_bit(PHY_INTERFACE_MODE_REVMII, interfaces);
1290 /* RGMII only supports 1G FD */
1291 phy_interface_set_rgmii(interfaces);
1292
1293 config->mac_capabilities = MAC_1000 | MAC_100 |
1294 MAC_SYM_PAUSE;
1295 } else {
1296 /* RSGMII port, but we don't have that, and we don't
1297 * specify in DT, so phylib uses the default of GMII
1298 */
1299 __set_bit(PHY_INTERFACE_MODE_GMII, interfaces);
1300 config->mac_capabilities = MAC_1000 | MAC_100 | MAC_10 |
1301 MAC_SYM_PAUSE | MAC_ASYM_PAUSE;
1302 }
1303 }
1304
1305 static void
rtl8366rb_mac_config(struct phylink_config * config,unsigned int mode,const struct phylink_link_state * state)1306 rtl8366rb_mac_config(struct phylink_config *config, unsigned int mode,
1307 const struct phylink_link_state *state)
1308 {
1309 }
1310
1311 static void
rtl8366rb_mac_link_up(struct phylink_config * config,struct phy_device * phydev,unsigned int mode,phy_interface_t interface,int speed,int duplex,bool tx_pause,bool rx_pause)1312 rtl8366rb_mac_link_up(struct phylink_config *config, struct phy_device *phydev,
1313 unsigned int mode, phy_interface_t interface,
1314 int speed, int duplex, bool tx_pause, bool rx_pause)
1315 {
1316 struct dsa_port *dp = dsa_phylink_to_port(config);
1317 struct realtek_priv *priv = dp->ds->priv;
1318 int port = dp->index;
1319 unsigned int val;
1320 int ret;
1321
1322 /* Allow forcing the mode on the fixed CPU port, no autonegotiation.
1323 * We assume autonegotiation works on the PHY-facing ports.
1324 */
1325 if (port != priv->cpu_port)
1326 return;
1327
1328 dev_dbg(priv->dev, "MAC link up on CPU port (%d)\n", port);
1329
1330 ret = regmap_update_bits(priv->map, RTL8366RB_MAC_FORCE_CTRL_REG,
1331 BIT(port), BIT(port));
1332 if (ret) {
1333 dev_err(priv->dev, "failed to force CPU port\n");
1334 return;
1335 }
1336
1337 /* Conjure port config */
1338 switch (speed) {
1339 case SPEED_10:
1340 val = RTL8366RB_PAACR_SPEED_10M;
1341 break;
1342 case SPEED_100:
1343 val = RTL8366RB_PAACR_SPEED_100M;
1344 break;
1345 case SPEED_1000:
1346 val = RTL8366RB_PAACR_SPEED_1000M;
1347 break;
1348 default:
1349 val = RTL8366RB_PAACR_SPEED_1000M;
1350 break;
1351 }
1352
1353 if (duplex == DUPLEX_FULL)
1354 val |= RTL8366RB_PAACR_FULL_DUPLEX;
1355
1356 if (tx_pause)
1357 val |= RTL8366RB_PAACR_TX_PAUSE;
1358
1359 if (rx_pause)
1360 val |= RTL8366RB_PAACR_RX_PAUSE;
1361
1362 val |= RTL8366RB_PAACR_LINK_UP;
1363
1364 ret = regmap_update_bits(priv->map, RTL8366RB_PAACR2,
1365 0xFF00U,
1366 val << 8);
1367 if (ret) {
1368 dev_err(priv->dev, "failed to set PAACR on CPU port\n");
1369 return;
1370 }
1371
1372 dev_dbg(priv->dev, "set PAACR to %04x\n", val);
1373
1374 /* Enable the CPU port */
1375 ret = regmap_update_bits(priv->map, RTL8366RB_PECR, BIT(port),
1376 0);
1377 if (ret) {
1378 dev_err(priv->dev, "failed to enable the CPU port\n");
1379 return;
1380 }
1381 }
1382
1383 static void
rtl8366rb_mac_link_down(struct phylink_config * config,unsigned int mode,phy_interface_t interface)1384 rtl8366rb_mac_link_down(struct phylink_config *config, unsigned int mode,
1385 phy_interface_t interface)
1386 {
1387 struct dsa_port *dp = dsa_phylink_to_port(config);
1388 struct realtek_priv *priv = dp->ds->priv;
1389 int port = dp->index;
1390 int ret;
1391
1392 if (port != priv->cpu_port)
1393 return;
1394
1395 dev_dbg(priv->dev, "MAC link down on CPU port (%d)\n", port);
1396
1397 /* Disable the CPU port */
1398 ret = regmap_update_bits(priv->map, RTL8366RB_PECR, BIT(port),
1399 BIT(port));
1400 if (ret) {
1401 dev_err(priv->dev, "failed to disable the CPU port\n");
1402 return;
1403 }
1404 }
1405
1406 static int
rtl8366rb_port_enable(struct dsa_switch * ds,int port,struct phy_device * phy)1407 rtl8366rb_port_enable(struct dsa_switch *ds, int port,
1408 struct phy_device *phy)
1409 {
1410 struct realtek_priv *priv = ds->priv;
1411 int ret;
1412
1413 dev_dbg(priv->dev, "enable port %d\n", port);
1414 ret = regmap_update_bits(priv->map, RTL8366RB_PECR, BIT(port),
1415 0);
1416 if (ret)
1417 return ret;
1418
1419 return 0;
1420 }
1421
1422 static void
rtl8366rb_port_disable(struct dsa_switch * ds,int port)1423 rtl8366rb_port_disable(struct dsa_switch *ds, int port)
1424 {
1425 struct realtek_priv *priv = ds->priv;
1426 int ret;
1427
1428 dev_dbg(priv->dev, "disable port %d\n", port);
1429 ret = regmap_update_bits(priv->map, RTL8366RB_PECR, BIT(port),
1430 BIT(port));
1431 if (ret)
1432 return;
1433 }
1434
1435 static int
rtl8366rb_port_bridge_join(struct dsa_switch * ds,int port,struct dsa_bridge bridge,bool * tx_fwd_offload,struct netlink_ext_ack * extack)1436 rtl8366rb_port_bridge_join(struct dsa_switch *ds, int port,
1437 struct dsa_bridge bridge,
1438 bool *tx_fwd_offload,
1439 struct netlink_ext_ack *extack)
1440 {
1441 struct realtek_priv *priv = ds->priv;
1442 unsigned int port_bitmap = 0;
1443 int ret, i;
1444
1445 /* Loop over all other ports than the current one */
1446 for (i = 0; i < RTL8366RB_PORT_NUM_CPU; i++) {
1447 /* Current port handled last */
1448 if (i == port)
1449 continue;
1450 /* Not on this bridge */
1451 if (!dsa_port_offloads_bridge(dsa_to_port(ds, i), &bridge))
1452 continue;
1453 /* Join this port to each other port on the bridge */
1454 ret = regmap_update_bits(priv->map, RTL8366RB_PORT_ISO(i),
1455 RTL8366RB_PORT_ISO_PORTS(BIT(port)),
1456 RTL8366RB_PORT_ISO_PORTS(BIT(port)));
1457 if (ret)
1458 dev_err(priv->dev, "failed to join port %d\n", port);
1459
1460 port_bitmap |= BIT(i);
1461 }
1462
1463 /* Set the bits for the ports we can access */
1464 return regmap_update_bits(priv->map, RTL8366RB_PORT_ISO(port),
1465 RTL8366RB_PORT_ISO_PORTS(port_bitmap),
1466 RTL8366RB_PORT_ISO_PORTS(port_bitmap));
1467 }
1468
1469 static void
rtl8366rb_port_bridge_leave(struct dsa_switch * ds,int port,struct dsa_bridge bridge)1470 rtl8366rb_port_bridge_leave(struct dsa_switch *ds, int port,
1471 struct dsa_bridge bridge)
1472 {
1473 struct realtek_priv *priv = ds->priv;
1474 unsigned int port_bitmap = 0;
1475 int ret, i;
1476
1477 /* Loop over all other ports than this one */
1478 for (i = 0; i < RTL8366RB_PORT_NUM_CPU; i++) {
1479 /* Current port handled last */
1480 if (i == port)
1481 continue;
1482 /* Not on this bridge */
1483 if (!dsa_port_offloads_bridge(dsa_to_port(ds, i), &bridge))
1484 continue;
1485 /* Remove this port from any other port on the bridge */
1486 ret = regmap_update_bits(priv->map, RTL8366RB_PORT_ISO(i),
1487 RTL8366RB_PORT_ISO_PORTS(BIT(port)), 0);
1488 if (ret)
1489 dev_err(priv->dev, "failed to leave port %d\n", port);
1490
1491 port_bitmap |= BIT(i);
1492 }
1493
1494 /* Clear the bits for the ports we can not access, leave ourselves */
1495 regmap_update_bits(priv->map, RTL8366RB_PORT_ISO(port),
1496 RTL8366RB_PORT_ISO_PORTS(port_bitmap), 0);
1497 }
1498
1499 /**
1500 * rtl8366rb_drop_untagged() - make the switch drop untagged and C-tagged frames
1501 * @priv: SMI state container
1502 * @port: the port to drop untagged and C-tagged frames on
1503 * @drop: whether to drop or pass untagged and C-tagged frames
1504 *
1505 * Return: zero for success, a negative number on error.
1506 */
rtl8366rb_drop_untagged(struct realtek_priv * priv,int port,bool drop)1507 static int rtl8366rb_drop_untagged(struct realtek_priv *priv, int port, bool drop)
1508 {
1509 return regmap_update_bits(priv->map, RTL8366RB_VLAN_INGRESS_CTRL1_REG,
1510 RTL8366RB_VLAN_INGRESS_CTRL1_DROP(port),
1511 drop ? RTL8366RB_VLAN_INGRESS_CTRL1_DROP(port) : 0);
1512 }
1513
rtl8366rb_vlan_filtering(struct dsa_switch * ds,int port,bool vlan_filtering,struct netlink_ext_ack * extack)1514 static int rtl8366rb_vlan_filtering(struct dsa_switch *ds, int port,
1515 bool vlan_filtering,
1516 struct netlink_ext_ack *extack)
1517 {
1518 struct realtek_priv *priv = ds->priv;
1519 struct rtl8366rb *rb;
1520 int ret;
1521
1522 rb = priv->chip_data;
1523
1524 dev_dbg(priv->dev, "port %d: %s VLAN filtering\n", port,
1525 vlan_filtering ? "enable" : "disable");
1526
1527 /* If the port is not in the member set, the frame will be dropped */
1528 ret = regmap_update_bits(priv->map, RTL8366RB_VLAN_INGRESS_CTRL2_REG,
1529 BIT(port), vlan_filtering ? BIT(port) : 0);
1530 if (ret)
1531 return ret;
1532
1533 /* If VLAN filtering is enabled and PVID is also enabled, we must
1534 * not drop any untagged or C-tagged frames. If we turn off VLAN
1535 * filtering on a port, we need to accept any frames.
1536 */
1537 if (vlan_filtering)
1538 ret = rtl8366rb_drop_untagged(priv, port, !rb->pvid_enabled[port]);
1539 else
1540 ret = rtl8366rb_drop_untagged(priv, port, false);
1541
1542 return ret;
1543 }
1544
1545 static int
rtl8366rb_port_pre_bridge_flags(struct dsa_switch * ds,int port,struct switchdev_brport_flags flags,struct netlink_ext_ack * extack)1546 rtl8366rb_port_pre_bridge_flags(struct dsa_switch *ds, int port,
1547 struct switchdev_brport_flags flags,
1548 struct netlink_ext_ack *extack)
1549 {
1550 /* We support enabling/disabling learning */
1551 if (flags.mask & ~(BR_LEARNING))
1552 return -EINVAL;
1553
1554 return 0;
1555 }
1556
1557 static int
rtl8366rb_port_bridge_flags(struct dsa_switch * ds,int port,struct switchdev_brport_flags flags,struct netlink_ext_ack * extack)1558 rtl8366rb_port_bridge_flags(struct dsa_switch *ds, int port,
1559 struct switchdev_brport_flags flags,
1560 struct netlink_ext_ack *extack)
1561 {
1562 struct realtek_priv *priv = ds->priv;
1563 int ret;
1564
1565 if (flags.mask & BR_LEARNING) {
1566 ret = regmap_update_bits(priv->map, RTL8366RB_PORT_LEARNDIS_CTRL,
1567 BIT(port),
1568 (flags.val & BR_LEARNING) ? 0 : BIT(port));
1569 if (ret)
1570 return ret;
1571 }
1572
1573 return 0;
1574 }
1575
1576 static void
rtl8366rb_port_stp_state_set(struct dsa_switch * ds,int port,u8 state)1577 rtl8366rb_port_stp_state_set(struct dsa_switch *ds, int port, u8 state)
1578 {
1579 struct realtek_priv *priv = ds->priv;
1580 u32 val;
1581 int i;
1582
1583 switch (state) {
1584 case BR_STATE_DISABLED:
1585 val = RTL8366RB_STP_STATE_DISABLED;
1586 break;
1587 case BR_STATE_BLOCKING:
1588 case BR_STATE_LISTENING:
1589 val = RTL8366RB_STP_STATE_BLOCKING;
1590 break;
1591 case BR_STATE_LEARNING:
1592 val = RTL8366RB_STP_STATE_LEARNING;
1593 break;
1594 case BR_STATE_FORWARDING:
1595 val = RTL8366RB_STP_STATE_FORWARDING;
1596 break;
1597 default:
1598 dev_err(priv->dev, "unknown bridge state requested\n");
1599 return;
1600 }
1601
1602 /* Set the same status for the port on all the FIDs */
1603 for (i = 0; i < RTL8366RB_NUM_FIDS; i++) {
1604 regmap_update_bits(priv->map, RTL8366RB_STP_STATE_BASE + i,
1605 RTL8366RB_STP_STATE_MASK(port),
1606 RTL8366RB_STP_STATE(port, val));
1607 }
1608 }
1609
1610 static void
rtl8366rb_port_fast_age(struct dsa_switch * ds,int port)1611 rtl8366rb_port_fast_age(struct dsa_switch *ds, int port)
1612 {
1613 struct realtek_priv *priv = ds->priv;
1614
1615 /* This will age out any learned L2 entries */
1616 regmap_update_bits(priv->map, RTL8366RB_SECURITY_CTRL,
1617 BIT(port), BIT(port));
1618 /* Restore the normal state of things */
1619 regmap_update_bits(priv->map, RTL8366RB_SECURITY_CTRL,
1620 BIT(port), 0);
1621 }
1622
rtl8366rb_change_mtu(struct dsa_switch * ds,int port,int new_mtu)1623 static int rtl8366rb_change_mtu(struct dsa_switch *ds, int port, int new_mtu)
1624 {
1625 struct realtek_priv *priv = ds->priv;
1626 struct rtl8366rb *rb;
1627 unsigned int max_mtu;
1628 u32 len;
1629 int i;
1630
1631 /* Cache the per-port MTU setting */
1632 rb = priv->chip_data;
1633 rb->max_mtu[port] = new_mtu;
1634
1635 /* Roof out the MTU for the entire switch to the greatest
1636 * common denominator: the biggest set for any one port will
1637 * be the biggest MTU for the switch.
1638 */
1639 max_mtu = ETH_DATA_LEN;
1640 for (i = 0; i < RTL8366RB_NUM_PORTS; i++) {
1641 if (rb->max_mtu[i] > max_mtu)
1642 max_mtu = rb->max_mtu[i];
1643 }
1644
1645 /* Translate to layer 2 size.
1646 * Add ethernet and (possible) VLAN headers, and checksum to the size.
1647 * For ETH_DATA_LEN (1500 bytes) this will add up to 1522 bytes.
1648 */
1649 max_mtu += VLAN_ETH_HLEN;
1650 max_mtu += ETH_FCS_LEN;
1651
1652 if (max_mtu <= 1522)
1653 len = RTL8366RB_SGCR_MAX_LENGTH_1522;
1654 else if (max_mtu > 1522 && max_mtu <= 1536)
1655 /* This will be the most common default if using VLAN and
1656 * CPU tagging on a port as both VLAN and CPU tag will
1657 * result in 1518 + 4 + 4 = 1526 bytes.
1658 */
1659 len = RTL8366RB_SGCR_MAX_LENGTH_1536;
1660 else if (max_mtu > 1536 && max_mtu <= 1552)
1661 len = RTL8366RB_SGCR_MAX_LENGTH_1552;
1662 else
1663 len = RTL8366RB_SGCR_MAX_LENGTH_16000;
1664
1665 return regmap_update_bits(priv->map, RTL8366RB_SGCR,
1666 RTL8366RB_SGCR_MAX_LENGTH_MASK,
1667 len);
1668 }
1669
rtl8366rb_max_mtu(struct dsa_switch * ds,int port)1670 static int rtl8366rb_max_mtu(struct dsa_switch *ds, int port)
1671 {
1672 /* The max MTU is 16000 bytes, so we subtract the ethernet
1673 * headers with VLAN and checksum and arrive at
1674 * 16000 - 18 - 4 = 15978. This does not include the CPU tag
1675 * since that is added to the requested MTU by the DSA framework.
1676 */
1677 return 16000 - VLAN_ETH_HLEN - ETH_FCS_LEN;
1678 }
1679
rtl8366rb_get_vlan_4k(struct realtek_priv * priv,u32 vid,struct rtl8366_vlan_4k * vlan4k)1680 static int rtl8366rb_get_vlan_4k(struct realtek_priv *priv, u32 vid,
1681 struct rtl8366_vlan_4k *vlan4k)
1682 {
1683 u32 data[3];
1684 int ret;
1685 int i;
1686
1687 memset(vlan4k, '\0', sizeof(struct rtl8366_vlan_4k));
1688
1689 if (vid >= RTL8366RB_NUM_VIDS)
1690 return -EINVAL;
1691
1692 /* write VID */
1693 ret = regmap_write(priv->map, RTL8366RB_VLAN_TABLE_WRITE_BASE,
1694 vid & RTL8366RB_VLAN_VID_MASK);
1695 if (ret)
1696 return ret;
1697
1698 /* write table access control word */
1699 ret = regmap_write(priv->map, RTL8366RB_TABLE_ACCESS_CTRL_REG,
1700 RTL8366RB_TABLE_VLAN_READ_CTRL);
1701 if (ret)
1702 return ret;
1703
1704 for (i = 0; i < 3; i++) {
1705 ret = regmap_read(priv->map,
1706 RTL8366RB_VLAN_TABLE_READ_BASE + i,
1707 &data[i]);
1708 if (ret)
1709 return ret;
1710 }
1711
1712 vlan4k->vid = vid;
1713 vlan4k->untag = (data[1] >> RTL8366RB_VLAN_UNTAG_SHIFT) &
1714 RTL8366RB_VLAN_UNTAG_MASK;
1715 vlan4k->member = data[1] & RTL8366RB_VLAN_MEMBER_MASK;
1716 vlan4k->fid = data[2] & RTL8366RB_VLAN_FID_MASK;
1717
1718 return 0;
1719 }
1720
rtl8366rb_set_vlan_4k(struct realtek_priv * priv,const struct rtl8366_vlan_4k * vlan4k)1721 static int rtl8366rb_set_vlan_4k(struct realtek_priv *priv,
1722 const struct rtl8366_vlan_4k *vlan4k)
1723 {
1724 u32 data[3];
1725 int ret;
1726 int i;
1727
1728 if (vlan4k->vid >= RTL8366RB_NUM_VIDS ||
1729 vlan4k->member > RTL8366RB_VLAN_MEMBER_MASK ||
1730 vlan4k->untag > RTL8366RB_VLAN_UNTAG_MASK ||
1731 vlan4k->fid > RTL8366RB_FIDMAX)
1732 return -EINVAL;
1733
1734 data[0] = vlan4k->vid & RTL8366RB_VLAN_VID_MASK;
1735 data[1] = (vlan4k->member & RTL8366RB_VLAN_MEMBER_MASK) |
1736 ((vlan4k->untag & RTL8366RB_VLAN_UNTAG_MASK) <<
1737 RTL8366RB_VLAN_UNTAG_SHIFT);
1738 data[2] = vlan4k->fid & RTL8366RB_VLAN_FID_MASK;
1739
1740 for (i = 0; i < 3; i++) {
1741 ret = regmap_write(priv->map,
1742 RTL8366RB_VLAN_TABLE_WRITE_BASE + i,
1743 data[i]);
1744 if (ret)
1745 return ret;
1746 }
1747
1748 /* write table access control word */
1749 ret = regmap_write(priv->map, RTL8366RB_TABLE_ACCESS_CTRL_REG,
1750 RTL8366RB_TABLE_VLAN_WRITE_CTRL);
1751
1752 return ret;
1753 }
1754
rtl8366rb_get_vlan_mc(struct realtek_priv * priv,u32 index,struct rtl8366_vlan_mc * vlanmc)1755 static int rtl8366rb_get_vlan_mc(struct realtek_priv *priv, u32 index,
1756 struct rtl8366_vlan_mc *vlanmc)
1757 {
1758 u32 data[3];
1759 int ret;
1760 int i;
1761
1762 memset(vlanmc, '\0', sizeof(struct rtl8366_vlan_mc));
1763
1764 if (index >= RTL8366RB_NUM_VLANS)
1765 return -EINVAL;
1766
1767 for (i = 0; i < 3; i++) {
1768 ret = regmap_read(priv->map,
1769 RTL8366RB_VLAN_MC_BASE(index) + i,
1770 &data[i]);
1771 if (ret)
1772 return ret;
1773 }
1774
1775 vlanmc->vid = data[0] & RTL8366RB_VLAN_VID_MASK;
1776 vlanmc->priority = (data[0] >> RTL8366RB_VLAN_PRIORITY_SHIFT) &
1777 RTL8366RB_VLAN_PRIORITY_MASK;
1778 vlanmc->untag = (data[1] >> RTL8366RB_VLAN_UNTAG_SHIFT) &
1779 RTL8366RB_VLAN_UNTAG_MASK;
1780 vlanmc->member = data[1] & RTL8366RB_VLAN_MEMBER_MASK;
1781 vlanmc->fid = data[2] & RTL8366RB_VLAN_FID_MASK;
1782
1783 return 0;
1784 }
1785
rtl8366rb_set_vlan_mc(struct realtek_priv * priv,u32 index,const struct rtl8366_vlan_mc * vlanmc)1786 static int rtl8366rb_set_vlan_mc(struct realtek_priv *priv, u32 index,
1787 const struct rtl8366_vlan_mc *vlanmc)
1788 {
1789 u32 data[3];
1790 int ret;
1791 int i;
1792
1793 if (index >= RTL8366RB_NUM_VLANS ||
1794 vlanmc->vid >= RTL8366RB_NUM_VIDS ||
1795 vlanmc->priority > RTL8366RB_PRIORITYMAX ||
1796 vlanmc->member > RTL8366RB_VLAN_MEMBER_MASK ||
1797 vlanmc->untag > RTL8366RB_VLAN_UNTAG_MASK ||
1798 vlanmc->fid > RTL8366RB_FIDMAX)
1799 return -EINVAL;
1800
1801 data[0] = (vlanmc->vid & RTL8366RB_VLAN_VID_MASK) |
1802 ((vlanmc->priority & RTL8366RB_VLAN_PRIORITY_MASK) <<
1803 RTL8366RB_VLAN_PRIORITY_SHIFT);
1804 data[1] = (vlanmc->member & RTL8366RB_VLAN_MEMBER_MASK) |
1805 ((vlanmc->untag & RTL8366RB_VLAN_UNTAG_MASK) <<
1806 RTL8366RB_VLAN_UNTAG_SHIFT);
1807 data[2] = vlanmc->fid & RTL8366RB_VLAN_FID_MASK;
1808
1809 for (i = 0; i < 3; i++) {
1810 ret = regmap_write(priv->map,
1811 RTL8366RB_VLAN_MC_BASE(index) + i,
1812 data[i]);
1813 if (ret)
1814 return ret;
1815 }
1816
1817 return 0;
1818 }
1819
rtl8366rb_get_mc_index(struct realtek_priv * priv,int port,int * val)1820 static int rtl8366rb_get_mc_index(struct realtek_priv *priv, int port, int *val)
1821 {
1822 u32 data;
1823 int ret;
1824
1825 if (port >= priv->num_ports)
1826 return -EINVAL;
1827
1828 ret = regmap_read(priv->map, RTL8366RB_PORT_VLAN_CTRL_REG(port),
1829 &data);
1830 if (ret)
1831 return ret;
1832
1833 *val = (data >> RTL8366RB_PORT_VLAN_CTRL_SHIFT(port)) &
1834 RTL8366RB_PORT_VLAN_CTRL_MASK;
1835
1836 return 0;
1837 }
1838
rtl8366rb_set_mc_index(struct realtek_priv * priv,int port,int index)1839 static int rtl8366rb_set_mc_index(struct realtek_priv *priv, int port, int index)
1840 {
1841 struct dsa_switch *ds = &priv->ds;
1842 struct rtl8366rb *rb;
1843 bool pvid_enabled;
1844 int ret;
1845
1846 rb = priv->chip_data;
1847 pvid_enabled = !!index;
1848
1849 if (port >= priv->num_ports || index >= RTL8366RB_NUM_VLANS)
1850 return -EINVAL;
1851
1852 ret = regmap_update_bits(priv->map, RTL8366RB_PORT_VLAN_CTRL_REG(port),
1853 RTL8366RB_PORT_VLAN_CTRL_MASK <<
1854 RTL8366RB_PORT_VLAN_CTRL_SHIFT(port),
1855 (index & RTL8366RB_PORT_VLAN_CTRL_MASK) <<
1856 RTL8366RB_PORT_VLAN_CTRL_SHIFT(port));
1857 if (ret)
1858 return ret;
1859
1860 rb->pvid_enabled[port] = pvid_enabled;
1861
1862 /* If VLAN filtering is enabled and PVID is also enabled, we must
1863 * not drop any untagged or C-tagged frames. Make sure to update the
1864 * filtering setting.
1865 */
1866 if (dsa_port_is_vlan_filtering(dsa_to_port(ds, port)))
1867 ret = rtl8366rb_drop_untagged(priv, port, !pvid_enabled);
1868
1869 return ret;
1870 }
1871
rtl8366rb_is_vlan_valid(struct realtek_priv * priv,unsigned int vlan)1872 static bool rtl8366rb_is_vlan_valid(struct realtek_priv *priv, unsigned int vlan)
1873 {
1874 unsigned int max = RTL8366RB_NUM_VLANS - 1;
1875
1876 if (priv->vlan4k_enabled)
1877 max = RTL8366RB_NUM_VIDS - 1;
1878
1879 if (vlan > max)
1880 return false;
1881
1882 return true;
1883 }
1884
rtl8366rb_enable_vlan(struct realtek_priv * priv,bool enable)1885 static int rtl8366rb_enable_vlan(struct realtek_priv *priv, bool enable)
1886 {
1887 dev_dbg(priv->dev, "%s VLAN\n", enable ? "enable" : "disable");
1888 return regmap_update_bits(priv->map,
1889 RTL8366RB_SGCR, RTL8366RB_SGCR_EN_VLAN,
1890 enable ? RTL8366RB_SGCR_EN_VLAN : 0);
1891 }
1892
rtl8366rb_enable_vlan4k(struct realtek_priv * priv,bool enable)1893 static int rtl8366rb_enable_vlan4k(struct realtek_priv *priv, bool enable)
1894 {
1895 dev_dbg(priv->dev, "%s VLAN 4k\n", enable ? "enable" : "disable");
1896 return regmap_update_bits(priv->map, RTL8366RB_SGCR,
1897 RTL8366RB_SGCR_EN_VLAN_4KTB,
1898 enable ? RTL8366RB_SGCR_EN_VLAN_4KTB : 0);
1899 }
1900
rtl8366rb_phy_read(struct realtek_priv * priv,int phy,int regnum)1901 static int rtl8366rb_phy_read(struct realtek_priv *priv, int phy, int regnum)
1902 {
1903 u32 val;
1904 u32 reg;
1905 int ret;
1906
1907 if (phy > RTL8366RB_PHY_NO_MAX)
1908 return -EINVAL;
1909
1910 rtl83xx_lock(priv);
1911
1912 ret = regmap_write(priv->map_nolock, RTL8366RB_PHY_ACCESS_CTRL_REG,
1913 RTL8366RB_PHY_CTRL_READ);
1914 if (ret)
1915 goto out;
1916
1917 reg = 0x8000 | (1 << (phy + RTL8366RB_PHY_NO_OFFSET)) | regnum;
1918
1919 ret = regmap_write(priv->map_nolock, reg, 0);
1920 if (ret) {
1921 dev_err(priv->dev,
1922 "failed to write PHY%d reg %04x @ %04x, ret %d\n",
1923 phy, regnum, reg, ret);
1924 goto out;
1925 }
1926
1927 ret = regmap_read(priv->map_nolock, RTL8366RB_PHY_ACCESS_DATA_REG,
1928 &val);
1929 if (ret)
1930 goto out;
1931
1932 ret = val;
1933
1934 dev_dbg(priv->dev, "read PHY%d register 0x%04x @ %08x, val <- %04x\n",
1935 phy, regnum, reg, val);
1936
1937 out:
1938 rtl83xx_unlock(priv);
1939
1940 return ret;
1941 }
1942
rtl8366rb_phy_write(struct realtek_priv * priv,int phy,int regnum,u16 val)1943 static int rtl8366rb_phy_write(struct realtek_priv *priv, int phy, int regnum,
1944 u16 val)
1945 {
1946 u32 reg;
1947 int ret;
1948
1949 if (phy > RTL8366RB_PHY_NO_MAX)
1950 return -EINVAL;
1951
1952 rtl83xx_lock(priv);
1953
1954 ret = regmap_write(priv->map_nolock, RTL8366RB_PHY_ACCESS_CTRL_REG,
1955 RTL8366RB_PHY_CTRL_WRITE);
1956 if (ret)
1957 goto out;
1958
1959 reg = 0x8000 | (1 << (phy + RTL8366RB_PHY_NO_OFFSET)) | regnum;
1960
1961 dev_dbg(priv->dev, "write PHY%d register 0x%04x @ %04x, val -> %04x\n",
1962 phy, regnum, reg, val);
1963
1964 ret = regmap_write(priv->map_nolock, reg, val);
1965 if (ret)
1966 goto out;
1967
1968 out:
1969 rtl83xx_unlock(priv);
1970
1971 return ret;
1972 }
1973
rtl8366rb_reset_chip(struct realtek_priv * priv)1974 static int rtl8366rb_reset_chip(struct realtek_priv *priv)
1975 {
1976 int timeout = 10;
1977 u32 val;
1978 int ret;
1979
1980 priv->write_reg_noack(priv, RTL8366RB_RESET_CTRL_REG,
1981 RTL8366RB_CHIP_CTRL_RESET_HW);
1982 do {
1983 usleep_range(20000, 25000);
1984 ret = regmap_read(priv->map, RTL8366RB_RESET_CTRL_REG, &val);
1985 if (ret)
1986 return ret;
1987
1988 if (!(val & RTL8366RB_CHIP_CTRL_RESET_HW))
1989 break;
1990 } while (--timeout);
1991
1992 if (!timeout) {
1993 dev_err(priv->dev, "timeout waiting for the switch to reset\n");
1994 return -EIO;
1995 }
1996
1997 return 0;
1998 }
1999
rtl8366rb_detect(struct realtek_priv * priv)2000 static int rtl8366rb_detect(struct realtek_priv *priv)
2001 {
2002 struct device *dev = priv->dev;
2003 int ret;
2004 u32 val;
2005
2006 /* Detect device */
2007 ret = regmap_read(priv->map, 0x5c, &val);
2008 if (ret) {
2009 dev_err(dev, "can't get chip ID (%d)\n", ret);
2010 return ret;
2011 }
2012
2013 switch (val) {
2014 case 0x6027:
2015 dev_info(dev, "found an RTL8366S switch\n");
2016 dev_err(dev, "this switch is not yet supported, submit patches!\n");
2017 return -ENODEV;
2018 case 0x5937:
2019 dev_info(dev, "found an RTL8366RB switch\n");
2020 priv->cpu_port = RTL8366RB_PORT_NUM_CPU;
2021 priv->num_ports = RTL8366RB_NUM_PORTS;
2022 priv->num_vlan_mc = RTL8366RB_NUM_VLANS;
2023 priv->mib_counters = rtl8366rb_mib_counters;
2024 priv->num_mib_counters = ARRAY_SIZE(rtl8366rb_mib_counters);
2025 break;
2026 default:
2027 dev_info(dev, "found an Unknown Realtek switch (id=0x%04x)\n",
2028 val);
2029 break;
2030 }
2031
2032 ret = rtl8366rb_reset_chip(priv);
2033 if (ret)
2034 return ret;
2035
2036 return 0;
2037 }
2038
2039 static const struct phylink_mac_ops rtl8366rb_phylink_mac_ops = {
2040 .mac_config = rtl8366rb_mac_config,
2041 .mac_link_down = rtl8366rb_mac_link_down,
2042 .mac_link_up = rtl8366rb_mac_link_up,
2043 };
2044
2045 static const struct dsa_switch_ops rtl8366rb_switch_ops = {
2046 .get_tag_protocol = rtl8366_get_tag_protocol,
2047 .setup = rtl8366rb_setup,
2048 .phylink_get_caps = rtl8366rb_phylink_get_caps,
2049 .get_strings = rtl8366_get_strings,
2050 .get_ethtool_stats = rtl8366_get_ethtool_stats,
2051 .get_sset_count = rtl8366_get_sset_count,
2052 .port_bridge_join = rtl8366rb_port_bridge_join,
2053 .port_bridge_leave = rtl8366rb_port_bridge_leave,
2054 .port_vlan_filtering = rtl8366rb_vlan_filtering,
2055 .port_vlan_add = rtl8366_vlan_add,
2056 .port_vlan_del = rtl8366_vlan_del,
2057 .port_enable = rtl8366rb_port_enable,
2058 .port_disable = rtl8366rb_port_disable,
2059 .port_pre_bridge_flags = rtl8366rb_port_pre_bridge_flags,
2060 .port_bridge_flags = rtl8366rb_port_bridge_flags,
2061 .port_stp_state_set = rtl8366rb_port_stp_state_set,
2062 .port_fast_age = rtl8366rb_port_fast_age,
2063 .port_change_mtu = rtl8366rb_change_mtu,
2064 .port_max_mtu = rtl8366rb_max_mtu,
2065 };
2066
2067 static const struct realtek_ops rtl8366rb_ops = {
2068 .detect = rtl8366rb_detect,
2069 .get_vlan_mc = rtl8366rb_get_vlan_mc,
2070 .set_vlan_mc = rtl8366rb_set_vlan_mc,
2071 .get_vlan_4k = rtl8366rb_get_vlan_4k,
2072 .set_vlan_4k = rtl8366rb_set_vlan_4k,
2073 .get_mc_index = rtl8366rb_get_mc_index,
2074 .set_mc_index = rtl8366rb_set_mc_index,
2075 .get_mib_counter = rtl8366rb_get_mib_counter,
2076 .is_vlan_valid = rtl8366rb_is_vlan_valid,
2077 .enable_vlan = rtl8366rb_enable_vlan,
2078 .enable_vlan4k = rtl8366rb_enable_vlan4k,
2079 .phy_read = rtl8366rb_phy_read,
2080 .phy_write = rtl8366rb_phy_write,
2081 };
2082
2083 const struct realtek_variant rtl8366rb_variant = {
2084 .ds_ops = &rtl8366rb_switch_ops,
2085 .ops = &rtl8366rb_ops,
2086 .phylink_mac_ops = &rtl8366rb_phylink_mac_ops,
2087 .clk_delay = 10,
2088 .cmd_read = 0xa9,
2089 .cmd_write = 0xa8,
2090 .chip_data_sz = sizeof(struct rtl8366rb),
2091 };
2092
2093 static const struct of_device_id rtl8366rb_of_match[] = {
2094 { .compatible = "realtek,rtl8366rb", .data = &rtl8366rb_variant, },
2095 { /* sentinel */ },
2096 };
2097 MODULE_DEVICE_TABLE(of, rtl8366rb_of_match);
2098
2099 static struct platform_driver rtl8366rb_smi_driver = {
2100 .driver = {
2101 .name = "rtl8366rb-smi",
2102 .of_match_table = rtl8366rb_of_match,
2103 },
2104 .probe = realtek_smi_probe,
2105 .remove = realtek_smi_remove,
2106 .shutdown = realtek_smi_shutdown,
2107 };
2108
2109 static struct mdio_driver rtl8366rb_mdio_driver = {
2110 .mdiodrv.driver = {
2111 .name = "rtl8366rb-mdio",
2112 .of_match_table = rtl8366rb_of_match,
2113 },
2114 .probe = realtek_mdio_probe,
2115 .remove = realtek_mdio_remove,
2116 .shutdown = realtek_mdio_shutdown,
2117 };
2118
rtl8366rb_init(void)2119 static int rtl8366rb_init(void)
2120 {
2121 int ret;
2122
2123 ret = realtek_mdio_driver_register(&rtl8366rb_mdio_driver);
2124 if (ret)
2125 return ret;
2126
2127 ret = realtek_smi_driver_register(&rtl8366rb_smi_driver);
2128 if (ret) {
2129 realtek_mdio_driver_unregister(&rtl8366rb_mdio_driver);
2130 return ret;
2131 }
2132
2133 return 0;
2134 }
2135 module_init(rtl8366rb_init);
2136
rtl8366rb_exit(void)2137 static void __exit rtl8366rb_exit(void)
2138 {
2139 realtek_smi_driver_unregister(&rtl8366rb_smi_driver);
2140 realtek_mdio_driver_unregister(&rtl8366rb_mdio_driver);
2141 }
2142 module_exit(rtl8366rb_exit);
2143
2144 MODULE_AUTHOR("Linus Walleij <linus.walleij@linaro.org>");
2145 MODULE_DESCRIPTION("Driver for RTL8366RB ethernet switch");
2146 MODULE_LICENSE("GPL");
2147 MODULE_IMPORT_NS("REALTEK_DSA");
2148