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246d7f77 FF |
1 | /* |
2 | * Broadcom Starfighter 2 DSA switch driver | |
3 | * | |
4 | * Copyright (C) 2014, Broadcom Corporation | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | */ | |
11 | ||
12 | #include <linux/list.h> | |
13 | #include <linux/module.h> | |
14 | #include <linux/netdevice.h> | |
15 | #include <linux/interrupt.h> | |
16 | #include <linux/platform_device.h> | |
17 | #include <linux/of.h> | |
18 | #include <linux/phy.h> | |
19 | #include <linux/phy_fixed.h> | |
20 | #include <linux/mii.h> | |
21 | #include <linux/of.h> | |
22 | #include <linux/of_irq.h> | |
23 | #include <linux/of_address.h> | |
8b7c94e3 | 24 | #include <linux/of_net.h> |
461cd1b0 | 25 | #include <linux/of_mdio.h> |
246d7f77 | 26 | #include <net/dsa.h> |
96e65d7f | 27 | #include <linux/ethtool.h> |
12f460f2 | 28 | #include <linux/if_bridge.h> |
aafc66f1 | 29 | #include <linux/brcmphy.h> |
680060d3 FF |
30 | #include <linux/etherdevice.h> |
31 | #include <net/switchdev.h> | |
f458995b | 32 | #include <linux/platform_data/b53.h> |
246d7f77 FF |
33 | |
34 | #include "bcm_sf2.h" | |
35 | #include "bcm_sf2_regs.h" | |
f458995b FF |
36 | #include "b53/b53_priv.h" |
37 | #include "b53/b53_regs.h" | |
246d7f77 | 38 | |
7b314362 AL |
39 | static enum dsa_tag_protocol bcm_sf2_sw_get_tag_protocol(struct dsa_switch *ds) |
40 | { | |
41 | return DSA_TAG_PROTO_BRCM; | |
42 | } | |
43 | ||
b6d045db | 44 | static void bcm_sf2_imp_vlan_setup(struct dsa_switch *ds, int cpu_port) |
246d7f77 | 45 | { |
f458995b | 46 | struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds); |
246d7f77 | 47 | unsigned int i; |
b6d045db FF |
48 | u32 reg; |
49 | ||
50 | /* Enable the IMP Port to be in the same VLAN as the other ports | |
51 | * on a per-port basis such that we only have Port i and IMP in | |
52 | * the same VLAN. | |
53 | */ | |
54 | for (i = 0; i < priv->hw_params.num_ports; i++) { | |
74c3e2a5 | 55 | if (!((1 << i) & ds->enabled_port_mask)) |
b6d045db FF |
56 | continue; |
57 | ||
58 | reg = core_readl(priv, CORE_PORT_VLAN_CTL_PORT(i)); | |
59 | reg |= (1 << cpu_port); | |
60 | core_writel(priv, reg, CORE_PORT_VLAN_CTL_PORT(i)); | |
61 | } | |
62 | } | |
63 | ||
64 | static void bcm_sf2_imp_setup(struct dsa_switch *ds, int port) | |
65 | { | |
f458995b | 66 | struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds); |
246d7f77 FF |
67 | u32 reg, val; |
68 | ||
69 | /* Enable the port memories */ | |
70 | reg = core_readl(priv, CORE_MEM_PSM_VDD_CTRL); | |
71 | reg &= ~P_TXQ_PSM_VDD(port); | |
72 | core_writel(priv, reg, CORE_MEM_PSM_VDD_CTRL); | |
73 | ||
74 | /* Enable Broadcast, Multicast, Unicast forwarding to IMP port */ | |
75 | reg = core_readl(priv, CORE_IMP_CTL); | |
76 | reg |= (RX_BCST_EN | RX_MCST_EN | RX_UCST_EN); | |
77 | reg &= ~(RX_DIS | TX_DIS); | |
78 | core_writel(priv, reg, CORE_IMP_CTL); | |
79 | ||
80 | /* Enable forwarding */ | |
81 | core_writel(priv, SW_FWDG_EN, CORE_SWMODE); | |
82 | ||
83 | /* Enable IMP port in dumb mode */ | |
84 | reg = core_readl(priv, CORE_SWITCH_CTRL); | |
85 | reg |= MII_DUMB_FWDG_EN; | |
86 | core_writel(priv, reg, CORE_SWITCH_CTRL); | |
87 | ||
88 | /* Resolve which bit controls the Broadcom tag */ | |
89 | switch (port) { | |
90 | case 8: | |
91 | val = BRCM_HDR_EN_P8; | |
92 | break; | |
93 | case 7: | |
94 | val = BRCM_HDR_EN_P7; | |
95 | break; | |
96 | case 5: | |
97 | val = BRCM_HDR_EN_P5; | |
98 | break; | |
99 | default: | |
100 | val = 0; | |
101 | break; | |
102 | } | |
103 | ||
104 | /* Enable Broadcom tags for IMP port */ | |
105 | reg = core_readl(priv, CORE_BRCM_HDR_CTRL); | |
106 | reg |= val; | |
107 | core_writel(priv, reg, CORE_BRCM_HDR_CTRL); | |
108 | ||
109 | /* Enable reception Broadcom tag for CPU TX (switch RX) to | |
110 | * allow us to tag outgoing frames | |
111 | */ | |
112 | reg = core_readl(priv, CORE_BRCM_HDR_RX_DIS); | |
113 | reg &= ~(1 << port); | |
114 | core_writel(priv, reg, CORE_BRCM_HDR_RX_DIS); | |
115 | ||
116 | /* Enable transmission of Broadcom tags from the switch (CPU RX) to | |
117 | * allow delivering frames to the per-port net_devices | |
118 | */ | |
119 | reg = core_readl(priv, CORE_BRCM_HDR_TX_DIS); | |
120 | reg &= ~(1 << port); | |
121 | core_writel(priv, reg, CORE_BRCM_HDR_TX_DIS); | |
122 | ||
123 | /* Force link status for IMP port */ | |
124 | reg = core_readl(priv, CORE_STS_OVERRIDE_IMP); | |
125 | reg |= (MII_SW_OR | LINK_STS); | |
126 | core_writel(priv, reg, CORE_STS_OVERRIDE_IMP); | |
246d7f77 FF |
127 | } |
128 | ||
450b05c1 FF |
129 | static void bcm_sf2_eee_enable_set(struct dsa_switch *ds, int port, bool enable) |
130 | { | |
f458995b | 131 | struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds); |
450b05c1 FF |
132 | u32 reg; |
133 | ||
134 | reg = core_readl(priv, CORE_EEE_EN_CTRL); | |
135 | if (enable) | |
136 | reg |= 1 << port; | |
137 | else | |
138 | reg &= ~(1 << port); | |
139 | core_writel(priv, reg, CORE_EEE_EN_CTRL); | |
140 | } | |
141 | ||
b083668c FF |
142 | static void bcm_sf2_gphy_enable_set(struct dsa_switch *ds, bool enable) |
143 | { | |
f458995b | 144 | struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds); |
b083668c FF |
145 | u32 reg; |
146 | ||
b083668c | 147 | reg = reg_readl(priv, REG_SPHY_CNTRL); |
9af197a8 FF |
148 | if (enable) { |
149 | reg |= PHY_RESET; | |
150 | reg &= ~(EXT_PWR_DOWN | IDDQ_BIAS | CK25_DIS); | |
151 | reg_writel(priv, reg, REG_SPHY_CNTRL); | |
152 | udelay(21); | |
153 | reg = reg_readl(priv, REG_SPHY_CNTRL); | |
154 | reg &= ~PHY_RESET; | |
155 | } else { | |
156 | reg |= EXT_PWR_DOWN | IDDQ_BIAS | PHY_RESET; | |
157 | reg_writel(priv, reg, REG_SPHY_CNTRL); | |
158 | mdelay(1); | |
159 | reg |= CK25_DIS; | |
160 | } | |
b083668c | 161 | reg_writel(priv, reg, REG_SPHY_CNTRL); |
9af197a8 FF |
162 | |
163 | /* Use PHY-driven LED signaling */ | |
164 | if (!enable) { | |
165 | reg = reg_readl(priv, REG_LED_CNTRL(0)); | |
166 | reg |= SPDLNK_SRC_SEL; | |
167 | reg_writel(priv, reg, REG_LED_CNTRL(0)); | |
168 | } | |
b083668c FF |
169 | } |
170 | ||
8b7c94e3 FF |
171 | static inline void bcm_sf2_port_intr_enable(struct bcm_sf2_priv *priv, |
172 | int port) | |
173 | { | |
174 | unsigned int off; | |
175 | ||
176 | switch (port) { | |
177 | case 7: | |
178 | off = P7_IRQ_OFF; | |
179 | break; | |
180 | case 0: | |
181 | /* Port 0 interrupts are located on the first bank */ | |
182 | intrl2_0_mask_clear(priv, P_IRQ_MASK(P0_IRQ_OFF)); | |
183 | return; | |
184 | default: | |
185 | off = P_IRQ_OFF(port); | |
186 | break; | |
187 | } | |
188 | ||
189 | intrl2_1_mask_clear(priv, P_IRQ_MASK(off)); | |
190 | } | |
191 | ||
192 | static inline void bcm_sf2_port_intr_disable(struct bcm_sf2_priv *priv, | |
193 | int port) | |
194 | { | |
195 | unsigned int off; | |
196 | ||
197 | switch (port) { | |
198 | case 7: | |
199 | off = P7_IRQ_OFF; | |
200 | break; | |
201 | case 0: | |
202 | /* Port 0 interrupts are located on the first bank */ | |
203 | intrl2_0_mask_set(priv, P_IRQ_MASK(P0_IRQ_OFF)); | |
204 | intrl2_0_writel(priv, P_IRQ_MASK(P0_IRQ_OFF), INTRL2_CPU_CLEAR); | |
205 | return; | |
206 | default: | |
207 | off = P_IRQ_OFF(port); | |
208 | break; | |
209 | } | |
210 | ||
211 | intrl2_1_mask_set(priv, P_IRQ_MASK(off)); | |
212 | intrl2_1_writel(priv, P_IRQ_MASK(off), INTRL2_CPU_CLEAR); | |
213 | } | |
214 | ||
b6d045db FF |
215 | static int bcm_sf2_port_setup(struct dsa_switch *ds, int port, |
216 | struct phy_device *phy) | |
246d7f77 | 217 | { |
f458995b | 218 | struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds); |
b6d045db | 219 | s8 cpu_port = ds->dst[ds->index].cpu_port; |
246d7f77 FF |
220 | u32 reg; |
221 | ||
222 | /* Clear the memory power down */ | |
223 | reg = core_readl(priv, CORE_MEM_PSM_VDD_CTRL); | |
224 | reg &= ~P_TXQ_PSM_VDD(port); | |
225 | core_writel(priv, reg, CORE_MEM_PSM_VDD_CTRL); | |
226 | ||
227 | /* Clear the Rx and Tx disable bits and set to no spanning tree */ | |
228 | core_writel(priv, 0, CORE_G_PCTL_PORT(port)); | |
229 | ||
9af197a8 | 230 | /* Re-enable the GPHY and re-apply workarounds */ |
8b7c94e3 | 231 | if (priv->int_phy_mask & 1 << port && priv->hw_params.num_gphy == 1) { |
9af197a8 FF |
232 | bcm_sf2_gphy_enable_set(ds, true); |
233 | if (phy) { | |
234 | /* if phy_stop() has been called before, phy | |
235 | * will be in halted state, and phy_start() | |
236 | * will call resume. | |
237 | * | |
238 | * the resume path does not configure back | |
239 | * autoneg settings, and since we hard reset | |
240 | * the phy manually here, we need to reset the | |
241 | * state machine also. | |
242 | */ | |
243 | phy->state = PHY_READY; | |
244 | phy_init_hw(phy); | |
245 | } | |
246 | } | |
247 | ||
8b7c94e3 FF |
248 | /* Enable MoCA port interrupts to get notified */ |
249 | if (port == priv->moca_port) | |
250 | bcm_sf2_port_intr_enable(priv, port); | |
246d7f77 | 251 | |
12f460f2 FF |
252 | /* Set this port, and only this one to be in the default VLAN, |
253 | * if member of a bridge, restore its membership prior to | |
254 | * bringing down this port. | |
255 | */ | |
246d7f77 FF |
256 | reg = core_readl(priv, CORE_PORT_VLAN_CTL_PORT(port)); |
257 | reg &= ~PORT_VLAN_CTRL_MASK; | |
258 | reg |= (1 << port); | |
02154927 | 259 | reg |= priv->dev->ports[port].vlan_ctl_mask; |
246d7f77 | 260 | core_writel(priv, reg, CORE_PORT_VLAN_CTL_PORT(port)); |
b6d045db FF |
261 | |
262 | bcm_sf2_imp_vlan_setup(ds, cpu_port); | |
263 | ||
450b05c1 FF |
264 | /* If EEE was enabled, restore it */ |
265 | if (priv->port_sts[port].eee.eee_enabled) | |
266 | bcm_sf2_eee_enable_set(ds, port, true); | |
267 | ||
b6d045db | 268 | return 0; |
246d7f77 FF |
269 | } |
270 | ||
b6d045db FF |
271 | static void bcm_sf2_port_disable(struct dsa_switch *ds, int port, |
272 | struct phy_device *phy) | |
246d7f77 | 273 | { |
f458995b | 274 | struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds); |
246d7f77 FF |
275 | u32 off, reg; |
276 | ||
96e65d7f FF |
277 | if (priv->wol_ports_mask & (1 << port)) |
278 | return; | |
279 | ||
8b7c94e3 FF |
280 | if (port == priv->moca_port) |
281 | bcm_sf2_port_intr_disable(priv, port); | |
b6d045db | 282 | |
8b7c94e3 | 283 | if (priv->int_phy_mask & 1 << port && priv->hw_params.num_gphy == 1) |
9af197a8 FF |
284 | bcm_sf2_gphy_enable_set(ds, false); |
285 | ||
246d7f77 FF |
286 | if (dsa_is_cpu_port(ds, port)) |
287 | off = CORE_IMP_CTL; | |
288 | else | |
289 | off = CORE_G_PCTL_PORT(port); | |
290 | ||
291 | reg = core_readl(priv, off); | |
292 | reg |= RX_DIS | TX_DIS; | |
293 | core_writel(priv, reg, off); | |
294 | ||
295 | /* Power down the port memory */ | |
296 | reg = core_readl(priv, CORE_MEM_PSM_VDD_CTRL); | |
297 | reg |= P_TXQ_PSM_VDD(port); | |
298 | core_writel(priv, reg, CORE_MEM_PSM_VDD_CTRL); | |
299 | } | |
300 | ||
450b05c1 FF |
301 | /* Returns 0 if EEE was not enabled, or 1 otherwise |
302 | */ | |
303 | static int bcm_sf2_eee_init(struct dsa_switch *ds, int port, | |
304 | struct phy_device *phy) | |
305 | { | |
f458995b | 306 | struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds); |
450b05c1 FF |
307 | struct ethtool_eee *p = &priv->port_sts[port].eee; |
308 | int ret; | |
309 | ||
310 | p->supported = (SUPPORTED_1000baseT_Full | SUPPORTED_100baseT_Full); | |
311 | ||
312 | ret = phy_init_eee(phy, 0); | |
313 | if (ret) | |
314 | return 0; | |
315 | ||
316 | bcm_sf2_eee_enable_set(ds, port, true); | |
317 | ||
318 | return 1; | |
319 | } | |
320 | ||
321 | static int bcm_sf2_sw_get_eee(struct dsa_switch *ds, int port, | |
322 | struct ethtool_eee *e) | |
323 | { | |
f458995b | 324 | struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds); |
450b05c1 FF |
325 | struct ethtool_eee *p = &priv->port_sts[port].eee; |
326 | u32 reg; | |
327 | ||
328 | reg = core_readl(priv, CORE_EEE_LPI_INDICATE); | |
329 | e->eee_enabled = p->eee_enabled; | |
330 | e->eee_active = !!(reg & (1 << port)); | |
331 | ||
332 | return 0; | |
333 | } | |
334 | ||
335 | static int bcm_sf2_sw_set_eee(struct dsa_switch *ds, int port, | |
336 | struct phy_device *phydev, | |
337 | struct ethtool_eee *e) | |
338 | { | |
f458995b | 339 | struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds); |
450b05c1 FF |
340 | struct ethtool_eee *p = &priv->port_sts[port].eee; |
341 | ||
342 | p->eee_enabled = e->eee_enabled; | |
343 | ||
344 | if (!p->eee_enabled) { | |
345 | bcm_sf2_eee_enable_set(ds, port, false); | |
346 | } else { | |
347 | p->eee_enabled = bcm_sf2_eee_init(ds, port, phydev); | |
348 | if (!p->eee_enabled) | |
349 | return -EOPNOTSUPP; | |
350 | } | |
351 | ||
352 | return 0; | |
353 | } | |
354 | ||
461cd1b0 FF |
355 | static int bcm_sf2_sw_indir_rw(struct bcm_sf2_priv *priv, int op, int addr, |
356 | int regnum, u16 val) | |
357 | { | |
358 | int ret = 0; | |
359 | u32 reg; | |
360 | ||
361 | reg = reg_readl(priv, REG_SWITCH_CNTRL); | |
362 | reg |= MDIO_MASTER_SEL; | |
363 | reg_writel(priv, reg, REG_SWITCH_CNTRL); | |
364 | ||
365 | /* Page << 8 | offset */ | |
366 | reg = 0x70; | |
367 | reg <<= 2; | |
368 | core_writel(priv, addr, reg); | |
369 | ||
370 | /* Page << 8 | offset */ | |
371 | reg = 0x80 << 8 | regnum << 1; | |
372 | reg <<= 2; | |
373 | ||
374 | if (op) | |
375 | ret = core_readl(priv, reg); | |
376 | else | |
377 | core_writel(priv, val, reg); | |
378 | ||
379 | reg = reg_readl(priv, REG_SWITCH_CNTRL); | |
380 | reg &= ~MDIO_MASTER_SEL; | |
381 | reg_writel(priv, reg, REG_SWITCH_CNTRL); | |
382 | ||
383 | return ret & 0xffff; | |
384 | } | |
385 | ||
386 | static int bcm_sf2_sw_mdio_read(struct mii_bus *bus, int addr, int regnum) | |
387 | { | |
388 | struct bcm_sf2_priv *priv = bus->priv; | |
389 | ||
390 | /* Intercept reads from Broadcom pseudo-PHY address, else, send | |
391 | * them to our master MDIO bus controller | |
392 | */ | |
393 | if (addr == BRCM_PSEUDO_PHY_ADDR && priv->indir_phy_mask & BIT(addr)) | |
394 | return bcm_sf2_sw_indir_rw(priv, 1, addr, regnum, 0); | |
395 | else | |
2cfe8f82 | 396 | return mdiobus_read_nested(priv->master_mii_bus, addr, regnum); |
461cd1b0 FF |
397 | } |
398 | ||
399 | static int bcm_sf2_sw_mdio_write(struct mii_bus *bus, int addr, int regnum, | |
400 | u16 val) | |
401 | { | |
402 | struct bcm_sf2_priv *priv = bus->priv; | |
403 | ||
404 | /* Intercept writes to the Broadcom pseudo-PHY address, else, | |
405 | * send them to our master MDIO bus controller | |
406 | */ | |
407 | if (addr == BRCM_PSEUDO_PHY_ADDR && priv->indir_phy_mask & BIT(addr)) | |
408 | bcm_sf2_sw_indir_rw(priv, 0, addr, regnum, val); | |
409 | else | |
2cfe8f82 | 410 | mdiobus_write_nested(priv->master_mii_bus, addr, regnum, val); |
461cd1b0 FF |
411 | |
412 | return 0; | |
413 | } | |
414 | ||
246d7f77 FF |
415 | static irqreturn_t bcm_sf2_switch_0_isr(int irq, void *dev_id) |
416 | { | |
417 | struct bcm_sf2_priv *priv = dev_id; | |
418 | ||
419 | priv->irq0_stat = intrl2_0_readl(priv, INTRL2_CPU_STATUS) & | |
420 | ~priv->irq0_mask; | |
421 | intrl2_0_writel(priv, priv->irq0_stat, INTRL2_CPU_CLEAR); | |
422 | ||
423 | return IRQ_HANDLED; | |
424 | } | |
425 | ||
426 | static irqreturn_t bcm_sf2_switch_1_isr(int irq, void *dev_id) | |
427 | { | |
428 | struct bcm_sf2_priv *priv = dev_id; | |
429 | ||
430 | priv->irq1_stat = intrl2_1_readl(priv, INTRL2_CPU_STATUS) & | |
431 | ~priv->irq1_mask; | |
432 | intrl2_1_writel(priv, priv->irq1_stat, INTRL2_CPU_CLEAR); | |
433 | ||
434 | if (priv->irq1_stat & P_LINK_UP_IRQ(P7_IRQ_OFF)) | |
435 | priv->port_sts[7].link = 1; | |
436 | if (priv->irq1_stat & P_LINK_DOWN_IRQ(P7_IRQ_OFF)) | |
437 | priv->port_sts[7].link = 0; | |
438 | ||
439 | return IRQ_HANDLED; | |
440 | } | |
441 | ||
33f84614 FF |
442 | static int bcm_sf2_sw_rst(struct bcm_sf2_priv *priv) |
443 | { | |
444 | unsigned int timeout = 1000; | |
445 | u32 reg; | |
446 | ||
447 | reg = core_readl(priv, CORE_WATCHDOG_CTRL); | |
448 | reg |= SOFTWARE_RESET | EN_CHIP_RST | EN_SW_RESET; | |
449 | core_writel(priv, reg, CORE_WATCHDOG_CTRL); | |
450 | ||
451 | do { | |
452 | reg = core_readl(priv, CORE_WATCHDOG_CTRL); | |
453 | if (!(reg & SOFTWARE_RESET)) | |
454 | break; | |
455 | ||
456 | usleep_range(1000, 2000); | |
457 | } while (timeout-- > 0); | |
458 | ||
459 | if (timeout == 0) | |
460 | return -ETIMEDOUT; | |
461 | ||
462 | return 0; | |
463 | } | |
464 | ||
691c9a8f FF |
465 | static void bcm_sf2_intr_disable(struct bcm_sf2_priv *priv) |
466 | { | |
f01d5988 | 467 | intrl2_0_mask_set(priv, 0xffffffff); |
691c9a8f | 468 | intrl2_0_writel(priv, 0xffffffff, INTRL2_CPU_CLEAR); |
f01d5988 | 469 | intrl2_1_mask_set(priv, 0xffffffff); |
691c9a8f | 470 | intrl2_1_writel(priv, 0xffffffff, INTRL2_CPU_CLEAR); |
691c9a8f FF |
471 | } |
472 | ||
8b7c94e3 FF |
473 | static void bcm_sf2_identify_ports(struct bcm_sf2_priv *priv, |
474 | struct device_node *dn) | |
475 | { | |
476 | struct device_node *port; | |
477 | const char *phy_mode_str; | |
478 | int mode; | |
479 | unsigned int port_num; | |
480 | int ret; | |
481 | ||
482 | priv->moca_port = -1; | |
483 | ||
484 | for_each_available_child_of_node(dn, port) { | |
485 | if (of_property_read_u32(port, "reg", &port_num)) | |
486 | continue; | |
487 | ||
488 | /* Internal PHYs get assigned a specific 'phy-mode' property | |
489 | * value: "internal" to help flag them before MDIO probing | |
490 | * has completed, since they might be turned off at that | |
491 | * time | |
492 | */ | |
493 | mode = of_get_phy_mode(port); | |
494 | if (mode < 0) { | |
495 | ret = of_property_read_string(port, "phy-mode", | |
496 | &phy_mode_str); | |
497 | if (ret < 0) | |
498 | continue; | |
499 | ||
500 | if (!strcasecmp(phy_mode_str, "internal")) | |
501 | priv->int_phy_mask |= 1 << port_num; | |
502 | } | |
503 | ||
504 | if (mode == PHY_INTERFACE_MODE_MOCA) | |
505 | priv->moca_port = port_num; | |
506 | } | |
507 | } | |
508 | ||
461cd1b0 FF |
509 | static int bcm_sf2_mdio_register(struct dsa_switch *ds) |
510 | { | |
f458995b | 511 | struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds); |
461cd1b0 FF |
512 | struct device_node *dn; |
513 | static int index; | |
514 | int err; | |
515 | ||
516 | /* Find our integrated MDIO bus node */ | |
517 | dn = of_find_compatible_node(NULL, NULL, "brcm,unimac-mdio"); | |
518 | priv->master_mii_bus = of_mdio_find_bus(dn); | |
519 | if (!priv->master_mii_bus) | |
520 | return -EPROBE_DEFER; | |
521 | ||
522 | get_device(&priv->master_mii_bus->dev); | |
523 | priv->master_mii_dn = dn; | |
524 | ||
525 | priv->slave_mii_bus = devm_mdiobus_alloc(ds->dev); | |
526 | if (!priv->slave_mii_bus) | |
527 | return -ENOMEM; | |
528 | ||
529 | priv->slave_mii_bus->priv = priv; | |
530 | priv->slave_mii_bus->name = "sf2 slave mii"; | |
531 | priv->slave_mii_bus->read = bcm_sf2_sw_mdio_read; | |
532 | priv->slave_mii_bus->write = bcm_sf2_sw_mdio_write; | |
533 | snprintf(priv->slave_mii_bus->id, MII_BUS_ID_SIZE, "sf2-%d", | |
534 | index++); | |
535 | priv->slave_mii_bus->dev.of_node = dn; | |
536 | ||
537 | /* Include the pseudo-PHY address to divert reads towards our | |
538 | * workaround. This is only required for 7445D0, since 7445E0 | |
539 | * disconnects the internal switch pseudo-PHY such that we can use the | |
540 | * regular SWITCH_MDIO master controller instead. | |
541 | * | |
542 | * Here we flag the pseudo PHY as needing special treatment and would | |
543 | * otherwise make all other PHY read/writes go to the master MDIO bus | |
544 | * controller that comes with this switch backed by the "mdio-unimac" | |
545 | * driver. | |
546 | */ | |
547 | if (of_machine_is_compatible("brcm,bcm7445d0")) | |
548 | priv->indir_phy_mask |= (1 << BRCM_PSEUDO_PHY_ADDR); | |
549 | else | |
550 | priv->indir_phy_mask = 0; | |
551 | ||
552 | ds->phys_mii_mask = priv->indir_phy_mask; | |
553 | ds->slave_mii_bus = priv->slave_mii_bus; | |
554 | priv->slave_mii_bus->parent = ds->dev->parent; | |
555 | priv->slave_mii_bus->phy_mask = ~priv->indir_phy_mask; | |
556 | ||
557 | if (dn) | |
558 | err = of_mdiobus_register(priv->slave_mii_bus, dn); | |
559 | else | |
560 | err = mdiobus_register(priv->slave_mii_bus); | |
561 | ||
562 | if (err) | |
563 | of_node_put(dn); | |
564 | ||
565 | return err; | |
566 | } | |
567 | ||
568 | static void bcm_sf2_mdio_unregister(struct bcm_sf2_priv *priv) | |
569 | { | |
570 | mdiobus_unregister(priv->slave_mii_bus); | |
571 | if (priv->master_mii_dn) | |
572 | of_node_put(priv->master_mii_dn); | |
573 | } | |
574 | ||
aa9aef77 FF |
575 | static u32 bcm_sf2_sw_get_phy_flags(struct dsa_switch *ds, int port) |
576 | { | |
f458995b | 577 | struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds); |
aa9aef77 FF |
578 | |
579 | /* The BCM7xxx PHY driver expects to find the integrated PHY revision | |
580 | * in bits 15:8 and the patch level in bits 7:0 which is exactly what | |
581 | * the REG_PHY_REVISION register layout is. | |
582 | */ | |
583 | ||
584 | return priv->hw_params.gphy_rev; | |
585 | } | |
586 | ||
246d7f77 FF |
587 | static void bcm_sf2_sw_adjust_link(struct dsa_switch *ds, int port, |
588 | struct phy_device *phydev) | |
589 | { | |
f458995b | 590 | struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds); |
76da8706 | 591 | struct ethtool_eee *p = &priv->port_sts[port].eee; |
246d7f77 FF |
592 | u32 id_mode_dis = 0, port_mode; |
593 | const char *str = NULL; | |
594 | u32 reg; | |
595 | ||
596 | switch (phydev->interface) { | |
597 | case PHY_INTERFACE_MODE_RGMII: | |
598 | str = "RGMII (no delay)"; | |
599 | id_mode_dis = 1; | |
600 | case PHY_INTERFACE_MODE_RGMII_TXID: | |
601 | if (!str) | |
602 | str = "RGMII (TX delay)"; | |
603 | port_mode = EXT_GPHY; | |
604 | break; | |
605 | case PHY_INTERFACE_MODE_MII: | |
606 | str = "MII"; | |
607 | port_mode = EXT_EPHY; | |
608 | break; | |
609 | case PHY_INTERFACE_MODE_REVMII: | |
610 | str = "Reverse MII"; | |
611 | port_mode = EXT_REVMII; | |
612 | break; | |
613 | default: | |
7de1557c FF |
614 | /* All other PHYs: internal and MoCA */ |
615 | goto force_link; | |
616 | } | |
617 | ||
618 | /* If the link is down, just disable the interface to conserve power */ | |
619 | if (!phydev->link) { | |
620 | reg = reg_readl(priv, REG_RGMII_CNTRL_P(port)); | |
621 | reg &= ~RGMII_MODE_EN; | |
622 | reg_writel(priv, reg, REG_RGMII_CNTRL_P(port)); | |
246d7f77 FF |
623 | goto force_link; |
624 | } | |
625 | ||
626 | /* Clear id_mode_dis bit, and the existing port mode, but | |
627 | * make sure we enable the RGMII block for data to pass | |
628 | */ | |
629 | reg = reg_readl(priv, REG_RGMII_CNTRL_P(port)); | |
630 | reg &= ~ID_MODE_DIS; | |
631 | reg &= ~(PORT_MODE_MASK << PORT_MODE_SHIFT); | |
632 | reg &= ~(RX_PAUSE_EN | TX_PAUSE_EN); | |
633 | ||
634 | reg |= port_mode | RGMII_MODE_EN; | |
635 | if (id_mode_dis) | |
636 | reg |= ID_MODE_DIS; | |
637 | ||
638 | if (phydev->pause) { | |
639 | if (phydev->asym_pause) | |
640 | reg |= TX_PAUSE_EN; | |
641 | reg |= RX_PAUSE_EN; | |
642 | } | |
643 | ||
644 | reg_writel(priv, reg, REG_RGMII_CNTRL_P(port)); | |
645 | ||
646 | pr_info("Port %d configured for %s\n", port, str); | |
647 | ||
648 | force_link: | |
649 | /* Force link settings detected from the PHY */ | |
650 | reg = SW_OVERRIDE; | |
651 | switch (phydev->speed) { | |
652 | case SPEED_1000: | |
653 | reg |= SPDSTS_1000 << SPEED_SHIFT; | |
654 | break; | |
655 | case SPEED_100: | |
656 | reg |= SPDSTS_100 << SPEED_SHIFT; | |
657 | break; | |
658 | } | |
659 | ||
660 | if (phydev->link) | |
661 | reg |= LINK_STS; | |
662 | if (phydev->duplex == DUPLEX_FULL) | |
663 | reg |= DUPLX_MODE; | |
664 | ||
665 | core_writel(priv, reg, CORE_STS_OVERRIDE_GMIIP_PORT(port)); | |
76da8706 FF |
666 | |
667 | if (!phydev->is_pseudo_fixed_link) | |
668 | p->eee_enabled = bcm_sf2_eee_init(ds, port, phydev); | |
246d7f77 FF |
669 | } |
670 | ||
671 | static void bcm_sf2_sw_fixed_link_update(struct dsa_switch *ds, int port, | |
672 | struct fixed_phy_status *status) | |
673 | { | |
f458995b | 674 | struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds); |
d2eac98f | 675 | u32 duplex, pause; |
246d7f77 FF |
676 | u32 reg; |
677 | ||
246d7f77 FF |
678 | duplex = core_readl(priv, CORE_DUPSTS); |
679 | pause = core_readl(priv, CORE_PAUSESTS); | |
246d7f77 FF |
680 | |
681 | status->link = 0; | |
682 | ||
8b7c94e3 | 683 | /* MoCA port is special as we do not get link status from CORE_LNKSTS, |
246d7f77 FF |
684 | * which means that we need to force the link at the port override |
685 | * level to get the data to flow. We do use what the interrupt handler | |
686 | * did determine before. | |
7855f675 FF |
687 | * |
688 | * For the other ports, we just force the link status, since this is | |
689 | * a fixed PHY device. | |
246d7f77 | 690 | */ |
8b7c94e3 | 691 | if (port == priv->moca_port) { |
246d7f77 | 692 | status->link = priv->port_sts[port].link; |
4ab7f913 FF |
693 | /* For MoCA interfaces, also force a link down notification |
694 | * since some version of the user-space daemon (mocad) use | |
695 | * cmd->autoneg to force the link, which messes up the PHY | |
696 | * state machine and make it go in PHY_FORCING state instead. | |
697 | */ | |
698 | if (!status->link) | |
c8b09808 | 699 | netif_carrier_off(ds->ports[port].netdev); |
246d7f77 FF |
700 | status->duplex = 1; |
701 | } else { | |
7855f675 | 702 | status->link = 1; |
246d7f77 FF |
703 | status->duplex = !!(duplex & (1 << port)); |
704 | } | |
705 | ||
7855f675 FF |
706 | reg = core_readl(priv, CORE_STS_OVERRIDE_GMIIP_PORT(port)); |
707 | reg |= SW_OVERRIDE; | |
708 | if (status->link) | |
709 | reg |= LINK_STS; | |
710 | else | |
711 | reg &= ~LINK_STS; | |
712 | core_writel(priv, reg, CORE_STS_OVERRIDE_GMIIP_PORT(port)); | |
713 | ||
246d7f77 FF |
714 | if ((pause & (1 << port)) && |
715 | (pause & (1 << (port + PAUSESTS_TX_PAUSE_SHIFT)))) { | |
716 | status->asym_pause = 1; | |
717 | status->pause = 1; | |
718 | } | |
719 | ||
720 | if (pause & (1 << port)) | |
721 | status->pause = 1; | |
722 | } | |
723 | ||
8cfa9498 FF |
724 | static int bcm_sf2_sw_suspend(struct dsa_switch *ds) |
725 | { | |
f458995b | 726 | struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds); |
8cfa9498 FF |
727 | unsigned int port; |
728 | ||
691c9a8f | 729 | bcm_sf2_intr_disable(priv); |
8cfa9498 FF |
730 | |
731 | /* Disable all ports physically present including the IMP | |
732 | * port, the other ones have already been disabled during | |
733 | * bcm_sf2_sw_setup | |
734 | */ | |
735 | for (port = 0; port < DSA_MAX_PORTS; port++) { | |
74c3e2a5 | 736 | if ((1 << port) & ds->enabled_port_mask || |
8cfa9498 | 737 | dsa_is_cpu_port(ds, port)) |
b6d045db | 738 | bcm_sf2_port_disable(ds, port, NULL); |
8cfa9498 FF |
739 | } |
740 | ||
741 | return 0; | |
742 | } | |
743 | ||
8cfa9498 FF |
744 | static int bcm_sf2_sw_resume(struct dsa_switch *ds) |
745 | { | |
f458995b | 746 | struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds); |
8cfa9498 | 747 | unsigned int port; |
8cfa9498 FF |
748 | int ret; |
749 | ||
750 | ret = bcm_sf2_sw_rst(priv); | |
751 | if (ret) { | |
752 | pr_err("%s: failed to software reset switch\n", __func__); | |
753 | return ret; | |
754 | } | |
755 | ||
b083668c FF |
756 | if (priv->hw_params.num_gphy == 1) |
757 | bcm_sf2_gphy_enable_set(ds, true); | |
8cfa9498 FF |
758 | |
759 | for (port = 0; port < DSA_MAX_PORTS; port++) { | |
74c3e2a5 | 760 | if ((1 << port) & ds->enabled_port_mask) |
b6d045db | 761 | bcm_sf2_port_setup(ds, port, NULL); |
8cfa9498 FF |
762 | else if (dsa_is_cpu_port(ds, port)) |
763 | bcm_sf2_imp_setup(ds, port); | |
764 | } | |
765 | ||
766 | return 0; | |
767 | } | |
768 | ||
96e65d7f FF |
769 | static void bcm_sf2_sw_get_wol(struct dsa_switch *ds, int port, |
770 | struct ethtool_wolinfo *wol) | |
771 | { | |
772 | struct net_device *p = ds->dst[ds->index].master_netdev; | |
f458995b | 773 | struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds); |
96e65d7f FF |
774 | struct ethtool_wolinfo pwol; |
775 | ||
776 | /* Get the parent device WoL settings */ | |
777 | p->ethtool_ops->get_wol(p, &pwol); | |
778 | ||
779 | /* Advertise the parent device supported settings */ | |
780 | wol->supported = pwol.supported; | |
781 | memset(&wol->sopass, 0, sizeof(wol->sopass)); | |
782 | ||
783 | if (pwol.wolopts & WAKE_MAGICSECURE) | |
784 | memcpy(&wol->sopass, pwol.sopass, sizeof(wol->sopass)); | |
785 | ||
786 | if (priv->wol_ports_mask & (1 << port)) | |
787 | wol->wolopts = pwol.wolopts; | |
788 | else | |
789 | wol->wolopts = 0; | |
790 | } | |
791 | ||
792 | static int bcm_sf2_sw_set_wol(struct dsa_switch *ds, int port, | |
793 | struct ethtool_wolinfo *wol) | |
794 | { | |
795 | struct net_device *p = ds->dst[ds->index].master_netdev; | |
f458995b | 796 | struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds); |
96e65d7f FF |
797 | s8 cpu_port = ds->dst[ds->index].cpu_port; |
798 | struct ethtool_wolinfo pwol; | |
799 | ||
800 | p->ethtool_ops->get_wol(p, &pwol); | |
801 | if (wol->wolopts & ~pwol.supported) | |
802 | return -EINVAL; | |
803 | ||
804 | if (wol->wolopts) | |
805 | priv->wol_ports_mask |= (1 << port); | |
806 | else | |
807 | priv->wol_ports_mask &= ~(1 << port); | |
808 | ||
809 | /* If we have at least one port enabled, make sure the CPU port | |
810 | * is also enabled. If the CPU port is the last one enabled, we disable | |
811 | * it since this configuration does not make sense. | |
812 | */ | |
813 | if (priv->wol_ports_mask && priv->wol_ports_mask != (1 << cpu_port)) | |
814 | priv->wol_ports_mask |= (1 << cpu_port); | |
815 | else | |
816 | priv->wol_ports_mask &= ~(1 << cpu_port); | |
817 | ||
818 | return p->ethtool_ops->set_wol(p, wol); | |
819 | } | |
820 | ||
de0b9d3b | 821 | static int bcm_sf2_vlan_op_wait(struct bcm_sf2_priv *priv) |
9c57a771 | 822 | { |
de0b9d3b FF |
823 | unsigned int timeout = 10; |
824 | u32 reg; | |
9c57a771 | 825 | |
de0b9d3b FF |
826 | do { |
827 | reg = core_readl(priv, CORE_ARLA_VTBL_RWCTRL); | |
828 | if (!(reg & ARLA_VTBL_STDN)) | |
829 | return 0; | |
9c57a771 | 830 | |
de0b9d3b FF |
831 | usleep_range(1000, 2000); |
832 | } while (timeout--); | |
9c57a771 | 833 | |
de0b9d3b FF |
834 | return -ETIMEDOUT; |
835 | } | |
9c57a771 | 836 | |
de0b9d3b FF |
837 | static int bcm_sf2_vlan_op(struct bcm_sf2_priv *priv, u8 op) |
838 | { | |
839 | core_writel(priv, ARLA_VTBL_STDN | op, CORE_ARLA_VTBL_RWCTRL); | |
840 | ||
841 | return bcm_sf2_vlan_op_wait(priv); | |
9c57a771 FF |
842 | } |
843 | ||
844 | static void bcm_sf2_sw_configure_vlan(struct dsa_switch *ds) | |
845 | { | |
f458995b | 846 | struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds); |
9c57a771 FF |
847 | unsigned int port; |
848 | ||
849 | /* Clear all VLANs */ | |
850 | bcm_sf2_vlan_op(priv, ARLA_VTBL_CMD_CLEAR); | |
851 | ||
852 | for (port = 0; port < priv->hw_params.num_ports; port++) { | |
853 | if (!((1 << port) & ds->enabled_port_mask)) | |
854 | continue; | |
855 | ||
856 | core_writel(priv, 1, CORE_DEFAULT_1Q_TAG_P(port)); | |
857 | } | |
858 | } | |
859 | ||
7fbb1a92 FF |
860 | static int bcm_sf2_sw_setup(struct dsa_switch *ds) |
861 | { | |
f458995b | 862 | struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds); |
7fbb1a92 | 863 | unsigned int port; |
d9338023 FF |
864 | |
865 | /* Enable all valid ports and disable those unused */ | |
866 | for (port = 0; port < priv->hw_params.num_ports; port++) { | |
867 | /* IMP port receives special treatment */ | |
868 | if ((1 << port) & ds->enabled_port_mask) | |
869 | bcm_sf2_port_setup(ds, port, NULL); | |
870 | else if (dsa_is_cpu_port(ds, port)) | |
871 | bcm_sf2_imp_setup(ds, port); | |
872 | else | |
873 | bcm_sf2_port_disable(ds, port, NULL); | |
874 | } | |
875 | ||
876 | bcm_sf2_sw_configure_vlan(ds); | |
877 | ||
878 | return 0; | |
879 | } | |
880 | ||
f458995b FF |
881 | /* The SWITCH_CORE register space is managed by b53 but operates on a page + |
882 | * register basis so we need to translate that into an address that the | |
883 | * bus-glue understands. | |
884 | */ | |
885 | #define SF2_PAGE_REG_MKADDR(page, reg) ((page) << 10 | (reg) << 2) | |
886 | ||
887 | static int bcm_sf2_core_read8(struct b53_device *dev, u8 page, u8 reg, | |
888 | u8 *val) | |
889 | { | |
890 | struct bcm_sf2_priv *priv = dev->priv; | |
891 | ||
892 | *val = core_readl(priv, SF2_PAGE_REG_MKADDR(page, reg)); | |
893 | ||
894 | return 0; | |
895 | } | |
896 | ||
897 | static int bcm_sf2_core_read16(struct b53_device *dev, u8 page, u8 reg, | |
898 | u16 *val) | |
899 | { | |
900 | struct bcm_sf2_priv *priv = dev->priv; | |
901 | ||
902 | *val = core_readl(priv, SF2_PAGE_REG_MKADDR(page, reg)); | |
903 | ||
904 | return 0; | |
905 | } | |
906 | ||
907 | static int bcm_sf2_core_read32(struct b53_device *dev, u8 page, u8 reg, | |
908 | u32 *val) | |
909 | { | |
910 | struct bcm_sf2_priv *priv = dev->priv; | |
911 | ||
912 | *val = core_readl(priv, SF2_PAGE_REG_MKADDR(page, reg)); | |
913 | ||
914 | return 0; | |
915 | } | |
916 | ||
917 | static int bcm_sf2_core_read64(struct b53_device *dev, u8 page, u8 reg, | |
918 | u64 *val) | |
919 | { | |
920 | struct bcm_sf2_priv *priv = dev->priv; | |
921 | ||
922 | *val = core_readq(priv, SF2_PAGE_REG_MKADDR(page, reg)); | |
923 | ||
924 | return 0; | |
925 | } | |
926 | ||
927 | static int bcm_sf2_core_write8(struct b53_device *dev, u8 page, u8 reg, | |
928 | u8 value) | |
929 | { | |
930 | struct bcm_sf2_priv *priv = dev->priv; | |
931 | ||
932 | core_writel(priv, value, SF2_PAGE_REG_MKADDR(page, reg)); | |
933 | ||
934 | return 0; | |
935 | } | |
936 | ||
937 | static int bcm_sf2_core_write16(struct b53_device *dev, u8 page, u8 reg, | |
938 | u16 value) | |
939 | { | |
940 | struct bcm_sf2_priv *priv = dev->priv; | |
941 | ||
942 | core_writel(priv, value, SF2_PAGE_REG_MKADDR(page, reg)); | |
943 | ||
944 | return 0; | |
945 | } | |
946 | ||
947 | static int bcm_sf2_core_write32(struct b53_device *dev, u8 page, u8 reg, | |
948 | u32 value) | |
949 | { | |
950 | struct bcm_sf2_priv *priv = dev->priv; | |
951 | ||
952 | core_writel(priv, value, SF2_PAGE_REG_MKADDR(page, reg)); | |
953 | ||
954 | return 0; | |
955 | } | |
956 | ||
957 | static int bcm_sf2_core_write64(struct b53_device *dev, u8 page, u8 reg, | |
958 | u64 value) | |
959 | { | |
960 | struct bcm_sf2_priv *priv = dev->priv; | |
961 | ||
962 | core_writeq(priv, value, SF2_PAGE_REG_MKADDR(page, reg)); | |
963 | ||
964 | return 0; | |
965 | } | |
966 | ||
0e26e5bd | 967 | static struct b53_io_ops bcm_sf2_io_ops = { |
f458995b FF |
968 | .read8 = bcm_sf2_core_read8, |
969 | .read16 = bcm_sf2_core_read16, | |
970 | .read32 = bcm_sf2_core_read32, | |
971 | .read48 = bcm_sf2_core_read64, | |
972 | .read64 = bcm_sf2_core_read64, | |
973 | .write8 = bcm_sf2_core_write8, | |
974 | .write16 = bcm_sf2_core_write16, | |
975 | .write32 = bcm_sf2_core_write32, | |
976 | .write48 = bcm_sf2_core_write64, | |
977 | .write64 = bcm_sf2_core_write64, | |
978 | }; | |
979 | ||
d9338023 FF |
980 | static int bcm_sf2_sw_probe(struct platform_device *pdev) |
981 | { | |
982 | const char *reg_names[BCM_SF2_REGS_NUM] = BCM_SF2_REGS_NAME; | |
983 | struct device_node *dn = pdev->dev.of_node; | |
f458995b | 984 | struct b53_platform_data *pdata; |
a4c61b92 | 985 | struct dsa_switch_ops *ops; |
d9338023 | 986 | struct bcm_sf2_priv *priv; |
f458995b | 987 | struct b53_device *dev; |
d9338023 FF |
988 | struct dsa_switch *ds; |
989 | void __iomem **base; | |
4bd11675 | 990 | struct resource *r; |
7fbb1a92 FF |
991 | unsigned int i; |
992 | u32 reg, rev; | |
993 | int ret; | |
994 | ||
f458995b FF |
995 | priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); |
996 | if (!priv) | |
997 | return -ENOMEM; | |
998 | ||
a4c61b92 FF |
999 | ops = devm_kzalloc(&pdev->dev, sizeof(*ops), GFP_KERNEL); |
1000 | if (!ops) | |
1001 | return -ENOMEM; | |
1002 | ||
f458995b FF |
1003 | dev = b53_switch_alloc(&pdev->dev, &bcm_sf2_io_ops, priv); |
1004 | if (!dev) | |
d9338023 FF |
1005 | return -ENOMEM; |
1006 | ||
f458995b FF |
1007 | pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); |
1008 | if (!pdata) | |
1009 | return -ENOMEM; | |
1010 | ||
1011 | /* Auto-detection using standard registers will not work, so | |
1012 | * provide an indication of what kind of device we are for | |
1013 | * b53_common to work with | |
1014 | */ | |
1015 | pdata->chip_id = BCM7445_DEVICE_ID; | |
1016 | dev->pdata = pdata; | |
1017 | ||
1018 | priv->dev = dev; | |
1019 | ds = dev->ds; | |
1020 | ||
1021 | /* Override the parts that are non-standard wrt. normal b53 devices */ | |
a4c61b92 FF |
1022 | memcpy(ops, ds->ops, sizeof(*ops)); |
1023 | ds->ops = ops; | |
f458995b FF |
1024 | ds->ops->get_tag_protocol = bcm_sf2_sw_get_tag_protocol; |
1025 | ds->ops->setup = bcm_sf2_sw_setup; | |
1026 | ds->ops->get_phy_flags = bcm_sf2_sw_get_phy_flags; | |
1027 | ds->ops->adjust_link = bcm_sf2_sw_adjust_link; | |
1028 | ds->ops->fixed_link_update = bcm_sf2_sw_fixed_link_update; | |
1029 | ds->ops->suspend = bcm_sf2_sw_suspend; | |
1030 | ds->ops->resume = bcm_sf2_sw_resume; | |
1031 | ds->ops->get_wol = bcm_sf2_sw_get_wol; | |
1032 | ds->ops->set_wol = bcm_sf2_sw_set_wol; | |
1033 | ds->ops->port_enable = bcm_sf2_port_setup; | |
1034 | ds->ops->port_disable = bcm_sf2_port_disable; | |
1035 | ds->ops->get_eee = bcm_sf2_sw_get_eee; | |
1036 | ds->ops->set_eee = bcm_sf2_sw_set_eee; | |
1037 | ||
1038 | /* Avoid having DSA free our slave MDIO bus (checking for | |
1039 | * ds->slave_mii_bus and ds->ops->phy_read being non-NULL) | |
1040 | */ | |
1041 | ds->ops->phy_read = NULL; | |
d9338023 | 1042 | |
f458995b | 1043 | dev_set_drvdata(&pdev->dev, priv); |
d9338023 | 1044 | |
7fbb1a92 FF |
1045 | spin_lock_init(&priv->indir_lock); |
1046 | mutex_init(&priv->stats_mutex); | |
1047 | ||
d9338023 | 1048 | bcm_sf2_identify_ports(priv, dn->child); |
7fbb1a92 FF |
1049 | |
1050 | priv->irq0 = irq_of_parse_and_map(dn, 0); | |
1051 | priv->irq1 = irq_of_parse_and_map(dn, 1); | |
1052 | ||
1053 | base = &priv->core; | |
1054 | for (i = 0; i < BCM_SF2_REGS_NUM; i++) { | |
4bd11675 FF |
1055 | r = platform_get_resource(pdev, IORESOURCE_MEM, i); |
1056 | *base = devm_ioremap_resource(&pdev->dev, r); | |
1057 | if (IS_ERR(*base)) { | |
7fbb1a92 | 1058 | pr_err("unable to find register: %s\n", reg_names[i]); |
4bd11675 | 1059 | return PTR_ERR(*base); |
7fbb1a92 FF |
1060 | } |
1061 | base++; | |
1062 | } | |
1063 | ||
1064 | ret = bcm_sf2_sw_rst(priv); | |
1065 | if (ret) { | |
1066 | pr_err("unable to software reset switch: %d\n", ret); | |
4bd11675 | 1067 | return ret; |
7fbb1a92 FF |
1068 | } |
1069 | ||
1070 | ret = bcm_sf2_mdio_register(ds); | |
1071 | if (ret) { | |
1072 | pr_err("failed to register MDIO bus\n"); | |
4bd11675 | 1073 | return ret; |
7fbb1a92 FF |
1074 | } |
1075 | ||
1076 | /* Disable all interrupts and request them */ | |
1077 | bcm_sf2_intr_disable(priv); | |
1078 | ||
4bd11675 FF |
1079 | ret = devm_request_irq(&pdev->dev, priv->irq0, bcm_sf2_switch_0_isr, 0, |
1080 | "switch_0", priv); | |
7fbb1a92 FF |
1081 | if (ret < 0) { |
1082 | pr_err("failed to request switch_0 IRQ\n"); | |
bb9c0fa3 | 1083 | goto out_mdio; |
7fbb1a92 FF |
1084 | } |
1085 | ||
4bd11675 FF |
1086 | ret = devm_request_irq(&pdev->dev, priv->irq1, bcm_sf2_switch_1_isr, 0, |
1087 | "switch_1", priv); | |
7fbb1a92 FF |
1088 | if (ret < 0) { |
1089 | pr_err("failed to request switch_1 IRQ\n"); | |
4bd11675 | 1090 | goto out_mdio; |
7fbb1a92 FF |
1091 | } |
1092 | ||
1093 | /* Reset the MIB counters */ | |
1094 | reg = core_readl(priv, CORE_GMNCFGCFG); | |
1095 | reg |= RST_MIB_CNT; | |
1096 | core_writel(priv, reg, CORE_GMNCFGCFG); | |
1097 | reg &= ~RST_MIB_CNT; | |
1098 | core_writel(priv, reg, CORE_GMNCFGCFG); | |
1099 | ||
1100 | /* Get the maximum number of ports for this switch */ | |
1101 | priv->hw_params.num_ports = core_readl(priv, CORE_IMP0_PRT_ID) + 1; | |
1102 | if (priv->hw_params.num_ports > DSA_MAX_PORTS) | |
1103 | priv->hw_params.num_ports = DSA_MAX_PORTS; | |
1104 | ||
1105 | /* Assume a single GPHY setup if we can't read that property */ | |
1106 | if (of_property_read_u32(dn, "brcm,num-gphy", | |
1107 | &priv->hw_params.num_gphy)) | |
1108 | priv->hw_params.num_gphy = 1; | |
1109 | ||
7fbb1a92 FF |
1110 | rev = reg_readl(priv, REG_SWITCH_REVISION); |
1111 | priv->hw_params.top_rev = (rev >> SWITCH_TOP_REV_SHIFT) & | |
1112 | SWITCH_TOP_REV_MASK; | |
1113 | priv->hw_params.core_rev = (rev & SF2_REV_MASK); | |
1114 | ||
1115 | rev = reg_readl(priv, REG_PHY_REVISION); | |
1116 | priv->hw_params.gphy_rev = rev & PHY_REVISION_MASK; | |
1117 | ||
f458995b | 1118 | ret = b53_switch_register(dev); |
d9338023 | 1119 | if (ret) |
4bd11675 | 1120 | goto out_mdio; |
d9338023 | 1121 | |
7fbb1a92 FF |
1122 | pr_info("Starfighter 2 top: %x.%02x, core: %x.%02x base: 0x%p, IRQs: %d, %d\n", |
1123 | priv->hw_params.top_rev >> 8, priv->hw_params.top_rev & 0xff, | |
1124 | priv->hw_params.core_rev >> 8, priv->hw_params.core_rev & 0xff, | |
1125 | priv->core, priv->irq0, priv->irq1); | |
1126 | ||
1127 | return 0; | |
1128 | ||
bb9c0fa3 FF |
1129 | out_mdio: |
1130 | bcm_sf2_mdio_unregister(priv); | |
7fbb1a92 FF |
1131 | return ret; |
1132 | } | |
1133 | ||
d9338023 | 1134 | static int bcm_sf2_sw_remove(struct platform_device *pdev) |
246d7f77 | 1135 | { |
f458995b | 1136 | struct bcm_sf2_priv *priv = platform_get_drvdata(pdev); |
d9338023 FF |
1137 | |
1138 | /* Disable all ports and interrupts */ | |
1139 | priv->wol_ports_mask = 0; | |
f458995b FF |
1140 | bcm_sf2_sw_suspend(priv->dev->ds); |
1141 | dsa_unregister_switch(priv->dev->ds); | |
d9338023 | 1142 | bcm_sf2_mdio_unregister(priv); |
246d7f77 FF |
1143 | |
1144 | return 0; | |
1145 | } | |
246d7f77 | 1146 | |
2399d614 FF |
1147 | static void bcm_sf2_sw_shutdown(struct platform_device *pdev) |
1148 | { | |
1149 | struct bcm_sf2_priv *priv = platform_get_drvdata(pdev); | |
1150 | ||
1151 | /* For a kernel about to be kexec'd we want to keep the GPHY on for a | |
1152 | * successful MDIO bus scan to occur. If we did turn off the GPHY | |
1153 | * before (e.g: port_disable), this will also power it back on. | |
4a2947e3 FF |
1154 | * |
1155 | * Do not rely on kexec_in_progress, just power the PHY on. | |
2399d614 FF |
1156 | */ |
1157 | if (priv->hw_params.num_gphy == 1) | |
4a2947e3 | 1158 | bcm_sf2_gphy_enable_set(priv->dev->ds, true); |
2399d614 FF |
1159 | } |
1160 | ||
d9338023 FF |
1161 | #ifdef CONFIG_PM_SLEEP |
1162 | static int bcm_sf2_suspend(struct device *dev) | |
246d7f77 | 1163 | { |
d9338023 | 1164 | struct platform_device *pdev = to_platform_device(dev); |
f458995b | 1165 | struct bcm_sf2_priv *priv = platform_get_drvdata(pdev); |
d9338023 | 1166 | |
f458995b | 1167 | return dsa_switch_suspend(priv->dev->ds); |
246d7f77 | 1168 | } |
d9338023 FF |
1169 | |
1170 | static int bcm_sf2_resume(struct device *dev) | |
1171 | { | |
1172 | struct platform_device *pdev = to_platform_device(dev); | |
f458995b | 1173 | struct bcm_sf2_priv *priv = platform_get_drvdata(pdev); |
d9338023 | 1174 | |
f458995b | 1175 | return dsa_switch_resume(priv->dev->ds); |
d9338023 FF |
1176 | } |
1177 | #endif /* CONFIG_PM_SLEEP */ | |
1178 | ||
1179 | static SIMPLE_DEV_PM_OPS(bcm_sf2_pm_ops, | |
1180 | bcm_sf2_suspend, bcm_sf2_resume); | |
1181 | ||
1182 | static const struct of_device_id bcm_sf2_of_match[] = { | |
1183 | { .compatible = "brcm,bcm7445-switch-v4.0" }, | |
1184 | { /* sentinel */ }, | |
1185 | }; | |
0822b43e | 1186 | MODULE_DEVICE_TABLE(of, bcm_sf2_of_match); |
d9338023 FF |
1187 | |
1188 | static struct platform_driver bcm_sf2_driver = { | |
1189 | .probe = bcm_sf2_sw_probe, | |
1190 | .remove = bcm_sf2_sw_remove, | |
2399d614 | 1191 | .shutdown = bcm_sf2_sw_shutdown, |
d9338023 FF |
1192 | .driver = { |
1193 | .name = "brcm-sf2", | |
1194 | .of_match_table = bcm_sf2_of_match, | |
1195 | .pm = &bcm_sf2_pm_ops, | |
1196 | }, | |
1197 | }; | |
1198 | module_platform_driver(bcm_sf2_driver); | |
246d7f77 FF |
1199 | |
1200 | MODULE_AUTHOR("Broadcom Corporation"); | |
1201 | MODULE_DESCRIPTION("Driver for Broadcom Starfighter 2 ethernet switch chip"); | |
1202 | MODULE_LICENSE("GPL"); | |
1203 | MODULE_ALIAS("platform:brcm-sf2"); |