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usb: gadget: udc: pch_udc: Fix a plethora of function documentation related issues
[linux/fpc-iii.git] / arch / mips / cavium-octeon / octeon-platform.c
blobd56e9b9d2e434d72ec1c8ed398dd70dac8e7b6e0
1 /*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 2004-2017 Cavium, Inc.
7 * Copyright (C) 2008 Wind River Systems
8 */
9
10 #include <linux/etherdevice.h>
11 #include <linux/of_platform.h>
12 #include <linux/of_fdt.h>
13 #include <linux/libfdt.h>
14
15 #include <asm/octeon/octeon.h>
16 #include <asm/octeon/cvmx-helper-board.h>
17
18 #ifdef CONFIG_USB
19 #include <linux/usb/ehci_def.h>
20 #include <linux/usb/ehci_pdriver.h>
21 #include <linux/usb/ohci_pdriver.h>
22 #include <asm/octeon/cvmx-uctlx-defs.h>
23
24 #define CVMX_UAHCX_EHCI_USBCMD (CVMX_ADD_IO_SEG(0x00016F0000000010ull))
25 #define CVMX_UAHCX_OHCI_USBCMD (CVMX_ADD_IO_SEG(0x00016F0000000408ull))
26
27 static DEFINE_MUTEX(octeon2_usb_clocks_mutex);
28
29 static int octeon2_usb_clock_start_cnt;
30
31 static int __init octeon2_usb_reset(void)
32 {
33 union cvmx_uctlx_clk_rst_ctl clk_rst_ctl;
34 u32 ucmd;
35
36 if (!OCTEON_IS_OCTEON2())
37 return 0;
38
39 clk_rst_ctl.u64 = cvmx_read_csr(CVMX_UCTLX_CLK_RST_CTL(0));
40 if (clk_rst_ctl.s.hrst) {
41 ucmd = cvmx_read64_uint32(CVMX_UAHCX_EHCI_USBCMD);
42 ucmd &= ~CMD_RUN;
43 cvmx_write64_uint32(CVMX_UAHCX_EHCI_USBCMD, ucmd);
44 mdelay(2);
45 ucmd |= CMD_RESET;
46 cvmx_write64_uint32(CVMX_UAHCX_EHCI_USBCMD, ucmd);
47 ucmd = cvmx_read64_uint32(CVMX_UAHCX_OHCI_USBCMD);
48 ucmd |= CMD_RUN;
49 cvmx_write64_uint32(CVMX_UAHCX_OHCI_USBCMD, ucmd);
50 }
51
52 return 0;
53 }
54 arch_initcall(octeon2_usb_reset);
55
56 static void octeon2_usb_clocks_start(struct device *dev)
57 {
58 u64 div;
59 union cvmx_uctlx_if_ena if_ena;
60 union cvmx_uctlx_clk_rst_ctl clk_rst_ctl;
61 union cvmx_uctlx_uphy_portx_ctl_status port_ctl_status;
62 int i;
63 unsigned long io_clk_64_to_ns;
64 u32 clock_rate = 12000000;
65 bool is_crystal_clock = false;
66
67
68 mutex_lock(&octeon2_usb_clocks_mutex);
69
70 octeon2_usb_clock_start_cnt++;
71 if (octeon2_usb_clock_start_cnt != 1)
72 goto exit;
73
74 io_clk_64_to_ns = 64000000000ull / octeon_get_io_clock_rate();
75
76 if (dev->of_node) {
77 struct device_node *uctl_node;
78 const char *clock_type;
79
80 uctl_node = of_get_parent(dev->of_node);
81 if (!uctl_node) {
82 dev_err(dev, "No UCTL device node\n");
83 goto exit;
84 }
85 i = of_property_read_u32(uctl_node,
86 "refclk-frequency", &clock_rate);
87 if (i) {
88 dev_err(dev, "No UCTL \"refclk-frequency\"\n");
89 goto exit;
90 }
91 i = of_property_read_string(uctl_node,
92 "refclk-type", &clock_type);
93
94 if (!i && strcmp("crystal", clock_type) == 0)
95 is_crystal_clock = true;
96 }
97
98 /*
99 * Step 1: Wait for voltages stable. That surely happened
100 * before starting the kernel.
101 *
102 * Step 2: Enable SCLK of UCTL by writing UCTL0_IF_ENA[EN] = 1
103 */
104 if_ena.u64 = 0;
105 if_ena.s.en = 1;
106 cvmx_write_csr(CVMX_UCTLX_IF_ENA(0), if_ena.u64);
107
108 for (i = 0; i <= 1; i++) {
109 port_ctl_status.u64 =
110 cvmx_read_csr(CVMX_UCTLX_UPHY_PORTX_CTL_STATUS(i, 0));
111 /* Set txvreftune to 15 to obtain compliant 'eye' diagram. */
112 port_ctl_status.s.txvreftune = 15;
113 port_ctl_status.s.txrisetune = 1;
114 port_ctl_status.s.txpreemphasistune = 1;
115 cvmx_write_csr(CVMX_UCTLX_UPHY_PORTX_CTL_STATUS(i, 0),
116 port_ctl_status.u64);
117 }
118
119 /* Step 3: Configure the reference clock, PHY, and HCLK */
120 clk_rst_ctl.u64 = cvmx_read_csr(CVMX_UCTLX_CLK_RST_CTL(0));
121
122 /*
123 * If the UCTL looks like it has already been started, skip
124 * the initialization, otherwise bus errors are obtained.
125 */
126 if (clk_rst_ctl.s.hrst)
127 goto end_clock;
128 /* 3a */
129 clk_rst_ctl.s.p_por = 1;
130 clk_rst_ctl.s.hrst = 0;
131 clk_rst_ctl.s.p_prst = 0;
132 clk_rst_ctl.s.h_clkdiv_rst = 0;
133 clk_rst_ctl.s.o_clkdiv_rst = 0;
134 clk_rst_ctl.s.h_clkdiv_en = 0;
135 clk_rst_ctl.s.o_clkdiv_en = 0;
136 cvmx_write_csr(CVMX_UCTLX_CLK_RST_CTL(0), clk_rst_ctl.u64);
137
138 /* 3b */
139 clk_rst_ctl.s.p_refclk_sel = is_crystal_clock ? 0 : 1;
140 switch (clock_rate) {
141 default:
142 pr_err("Invalid UCTL clock rate of %u, using 12000000 instead\n",
143 clock_rate);
144 fallthrough;
145 case 12000000:
146 clk_rst_ctl.s.p_refclk_div = 0;
147 break;
148 case 24000000:
149 clk_rst_ctl.s.p_refclk_div = 1;
150 break;
151 case 48000000:
152 clk_rst_ctl.s.p_refclk_div = 2;
153 break;
154 }
155 cvmx_write_csr(CVMX_UCTLX_CLK_RST_CTL(0), clk_rst_ctl.u64);
156
157 /* 3c */
158 div = octeon_get_io_clock_rate() / 130000000ull;
159
160 switch (div) {
161 case 0:
162 div = 1;
163 break;
164 case 1:
165 case 2:
166 case 3:
167 case 4:
168 break;
169 case 5:
170 div = 4;
171 break;
172 case 6:
173 case 7:
174 div = 6;
175 break;
176 case 8:
177 case 9:
178 case 10:
179 case 11:
180 div = 8;
181 break;
182 default:
183 div = 12;
184 break;
185 }
186 clk_rst_ctl.s.h_div = div;
187 cvmx_write_csr(CVMX_UCTLX_CLK_RST_CTL(0), clk_rst_ctl.u64);
188 /* Read it back, */
189 clk_rst_ctl.u64 = cvmx_read_csr(CVMX_UCTLX_CLK_RST_CTL(0));
190 clk_rst_ctl.s.h_clkdiv_en = 1;
191 cvmx_write_csr(CVMX_UCTLX_CLK_RST_CTL(0), clk_rst_ctl.u64);
192 /* 3d */
193 clk_rst_ctl.s.h_clkdiv_rst = 1;
194 cvmx_write_csr(CVMX_UCTLX_CLK_RST_CTL(0), clk_rst_ctl.u64);
195
196 /* 3e: delay 64 io clocks */
197 ndelay(io_clk_64_to_ns);
198
199 /*
200 * Step 4: Program the power-on reset field in the UCTL
201 * clock-reset-control register.
202 */
203 clk_rst_ctl.s.p_por = 0;
204 cvmx_write_csr(CVMX_UCTLX_CLK_RST_CTL(0), clk_rst_ctl.u64);
205
206 /* Step 5: Wait 3 ms for the PHY clock to start. */
207 mdelay(3);
208
209 /* Steps 6..9 for ATE only, are skipped. */
210
211 /* Step 10: Configure the OHCI_CLK48 and OHCI_CLK12 clocks. */
212 /* 10a */
213 clk_rst_ctl.s.o_clkdiv_rst = 1;
214 cvmx_write_csr(CVMX_UCTLX_CLK_RST_CTL(0), clk_rst_ctl.u64);
215
216 /* 10b */
217 clk_rst_ctl.s.o_clkdiv_en = 1;
218 cvmx_write_csr(CVMX_UCTLX_CLK_RST_CTL(0), clk_rst_ctl.u64);
219
220 /* 10c */
221 ndelay(io_clk_64_to_ns);
222
223 /*
224 * Step 11: Program the PHY reset field:
225 * UCTL0_CLK_RST_CTL[P_PRST] = 1
226 */
227 clk_rst_ctl.s.p_prst = 1;
228 cvmx_write_csr(CVMX_UCTLX_CLK_RST_CTL(0), clk_rst_ctl.u64);
229
230 /* Step 11b */
231 udelay(1);
232
233 /* Step 11c */
234 clk_rst_ctl.s.p_prst = 0;
235 cvmx_write_csr(CVMX_UCTLX_CLK_RST_CTL(0), clk_rst_ctl.u64);
236
237 /* Step 11d */
238 mdelay(1);
239
240 /* Step 11e */
241 clk_rst_ctl.s.p_prst = 1;
242 cvmx_write_csr(CVMX_UCTLX_CLK_RST_CTL(0), clk_rst_ctl.u64);
243
244 /* Step 12: Wait 1 uS. */
245 udelay(1);
246
247 /* Step 13: Program the HRESET_N field: UCTL0_CLK_RST_CTL[HRST] = 1 */
248 clk_rst_ctl.s.hrst = 1;
249 cvmx_write_csr(CVMX_UCTLX_CLK_RST_CTL(0), clk_rst_ctl.u64);
250
251 end_clock:
252 /* Set uSOF cycle period to 60,000 bits. */
253 cvmx_write_csr(CVMX_UCTLX_EHCI_FLA(0), 0x20ull);
254
255 exit:
256 mutex_unlock(&octeon2_usb_clocks_mutex);
257 }
258
259 static void octeon2_usb_clocks_stop(void)
260 {
261 mutex_lock(&octeon2_usb_clocks_mutex);
262 octeon2_usb_clock_start_cnt--;
263 mutex_unlock(&octeon2_usb_clocks_mutex);
264 }
265
266 static int octeon_ehci_power_on(struct platform_device *pdev)
267 {
268 octeon2_usb_clocks_start(&pdev->dev);
269 return 0;
270 }
271
272 static void octeon_ehci_power_off(struct platform_device *pdev)
273 {
274 octeon2_usb_clocks_stop();
275 }
276
277 static struct usb_ehci_pdata octeon_ehci_pdata = {
278 /* Octeon EHCI matches CPU endianness. */
279 #ifdef __BIG_ENDIAN
280 .big_endian_mmio = 1,
281 #endif
282 /*
283 * We can DMA from anywhere. But the descriptors must be in
284 * the lower 4GB.
285 */
286 .dma_mask_64 = 0,
287 .power_on = octeon_ehci_power_on,
288 .power_off = octeon_ehci_power_off,
289 };
290
291 static void __init octeon_ehci_hw_start(struct device *dev)
292 {
293 union cvmx_uctlx_ehci_ctl ehci_ctl;
294
295 octeon2_usb_clocks_start(dev);
296
297 ehci_ctl.u64 = cvmx_read_csr(CVMX_UCTLX_EHCI_CTL(0));
298 /* Use 64-bit addressing. */
299 ehci_ctl.s.ehci_64b_addr_en = 1;
300 ehci_ctl.s.l2c_addr_msb = 0;
301 #ifdef __BIG_ENDIAN
302 ehci_ctl.s.l2c_buff_emod = 1; /* Byte swapped. */
303 ehci_ctl.s.l2c_desc_emod = 1; /* Byte swapped. */
304 #else
305 ehci_ctl.s.l2c_buff_emod = 0; /* not swapped. */
306 ehci_ctl.s.l2c_desc_emod = 0; /* not swapped. */
307 ehci_ctl.s.inv_reg_a2 = 1;
308 #endif
309 cvmx_write_csr(CVMX_UCTLX_EHCI_CTL(0), ehci_ctl.u64);
310
311 octeon2_usb_clocks_stop();
312 }
313
314 static int __init octeon_ehci_device_init(void)
315 {
316 struct platform_device *pd;
317 struct device_node *ehci_node;
318 int ret = 0;
319
320 ehci_node = of_find_node_by_name(NULL, "ehci");
321 if (!ehci_node)
322 return 0;
323
324 pd = of_find_device_by_node(ehci_node);
325 of_node_put(ehci_node);
326 if (!pd)
327 return 0;
328
329 pd->dev.platform_data = &octeon_ehci_pdata;
330 octeon_ehci_hw_start(&pd->dev);
331
332 return ret;
333 }
334 device_initcall(octeon_ehci_device_init);
335
336 static int octeon_ohci_power_on(struct platform_device *pdev)
337 {
338 octeon2_usb_clocks_start(&pdev->dev);
339 return 0;
340 }
341
342 static void octeon_ohci_power_off(struct platform_device *pdev)
343 {
344 octeon2_usb_clocks_stop();
345 }
346
347 static struct usb_ohci_pdata octeon_ohci_pdata = {
348 /* Octeon OHCI matches CPU endianness. */
349 #ifdef __BIG_ENDIAN
350 .big_endian_mmio = 1,
351 #endif
352 .power_on = octeon_ohci_power_on,
353 .power_off = octeon_ohci_power_off,
354 };
355
356 static void __init octeon_ohci_hw_start(struct device *dev)
357 {
358 union cvmx_uctlx_ohci_ctl ohci_ctl;
359
360 octeon2_usb_clocks_start(dev);
361
362 ohci_ctl.u64 = cvmx_read_csr(CVMX_UCTLX_OHCI_CTL(0));
363 ohci_ctl.s.l2c_addr_msb = 0;
364 #ifdef __BIG_ENDIAN
365 ohci_ctl.s.l2c_buff_emod = 1; /* Byte swapped. */
366 ohci_ctl.s.l2c_desc_emod = 1; /* Byte swapped. */
367 #else
368 ohci_ctl.s.l2c_buff_emod = 0; /* not swapped. */
369 ohci_ctl.s.l2c_desc_emod = 0; /* not swapped. */
370 ohci_ctl.s.inv_reg_a2 = 1;
371 #endif
372 cvmx_write_csr(CVMX_UCTLX_OHCI_CTL(0), ohci_ctl.u64);
373
374 octeon2_usb_clocks_stop();
375 }
376
377 static int __init octeon_ohci_device_init(void)
378 {
379 struct platform_device *pd;
380 struct device_node *ohci_node;
381 int ret = 0;
382
383 ohci_node = of_find_node_by_name(NULL, "ohci");
384 if (!ohci_node)
385 return 0;
386
387 pd = of_find_device_by_node(ohci_node);
388 of_node_put(ohci_node);
389 if (!pd)
390 return 0;
391
392 pd->dev.platform_data = &octeon_ohci_pdata;
393 octeon_ohci_hw_start(&pd->dev);
394
395 return ret;
396 }
397 device_initcall(octeon_ohci_device_init);
398
399 #endif /* CONFIG_USB */
400
401 /* Octeon Random Number Generator. */
402 static int __init octeon_rng_device_init(void)
403 {
404 struct platform_device *pd;
405 int ret = 0;
406
407 struct resource rng_resources[] = {
408 {
409 .flags = IORESOURCE_MEM,
410 .start = XKPHYS_TO_PHYS(CVMX_RNM_CTL_STATUS),
411 .end = XKPHYS_TO_PHYS(CVMX_RNM_CTL_STATUS) + 0xf
412 }, {
413 .flags = IORESOURCE_MEM,
414 .start = cvmx_build_io_address(8, 0),
415 .end = cvmx_build_io_address(8, 0) + 0x7
416 }
417 };
418
419 pd = platform_device_alloc("octeon_rng", -1);
420 if (!pd) {
421 ret = -ENOMEM;
422 goto out;
423 }
424
425 ret = platform_device_add_resources(pd, rng_resources,
426 ARRAY_SIZE(rng_resources));
427 if (ret)
428 goto fail;
429
430 ret = platform_device_add(pd);
431 if (ret)
432 goto fail;
433
434 return ret;
435 fail:
436 platform_device_put(pd);
437
438 out:
439 return ret;
440 }
441 device_initcall(octeon_rng_device_init);
442
443 static const struct of_device_id octeon_ids[] __initconst = {
444 { .compatible = "simple-bus", },
445 { .compatible = "cavium,octeon-6335-uctl", },
446 { .compatible = "cavium,octeon-5750-usbn", },
447 { .compatible = "cavium,octeon-3860-bootbus", },
448 { .compatible = "cavium,mdio-mux", },
449 { .compatible = "gpio-leds", },
450 { .compatible = "cavium,octeon-7130-usb-uctl", },
451 {},
452 };
453
454 static bool __init octeon_has_88e1145(void)
455 {
456 return !OCTEON_IS_MODEL(OCTEON_CN52XX) &&
457 !OCTEON_IS_MODEL(OCTEON_CN6XXX) &&
458 !OCTEON_IS_MODEL(OCTEON_CN56XX);
459 }
460
461 static bool __init octeon_has_fixed_link(int ipd_port)
462 {
463 switch (cvmx_sysinfo_get()->board_type) {
464 case CVMX_BOARD_TYPE_CN3005_EVB_HS5:
465 case CVMX_BOARD_TYPE_CN3010_EVB_HS5:
466 case CVMX_BOARD_TYPE_CN3020_EVB_HS5:
467 case CVMX_BOARD_TYPE_CUST_NB5:
468 case CVMX_BOARD_TYPE_EBH3100:
469 /* Port 1 on these boards is always gigabit. */
470 return ipd_port == 1;
471 case CVMX_BOARD_TYPE_BBGW_REF:
472 /* Ports 0 and 1 connect to the switch. */
473 return ipd_port == 0 || ipd_port == 1;
474 }
475 return false;
476 }
477
478 static void __init octeon_fdt_set_phy(int eth, int phy_addr)
479 {
480 const __be32 *phy_handle;
481 const __be32 *alt_phy_handle;
482 const __be32 *reg;
483 u32 phandle;
484 int phy;
485 int alt_phy;
486 const char *p;
487 int current_len;
488 char new_name[20];
489
490 phy_handle = fdt_getprop(initial_boot_params, eth, "phy-handle", NULL);
491 if (!phy_handle)
492 return;
493
494 phandle = be32_to_cpup(phy_handle);
495 phy = fdt_node_offset_by_phandle(initial_boot_params, phandle);
496
497 alt_phy_handle = fdt_getprop(initial_boot_params, eth, "cavium,alt-phy-handle", NULL);
498 if (alt_phy_handle) {
499 u32 alt_phandle = be32_to_cpup(alt_phy_handle);
500
501 alt_phy = fdt_node_offset_by_phandle(initial_boot_params, alt_phandle);
502 } else {
503 alt_phy = -1;
504 }
505
506 if (phy_addr < 0 || phy < 0) {
507 /* Delete the PHY things */
508 fdt_nop_property(initial_boot_params, eth, "phy-handle");
509 /* This one may fail */
510 fdt_nop_property(initial_boot_params, eth, "cavium,alt-phy-handle");
511 if (phy >= 0)
512 fdt_nop_node(initial_boot_params, phy);
513 if (alt_phy >= 0)
514 fdt_nop_node(initial_boot_params, alt_phy);
515 return;
516 }
517
518 if (phy_addr >= 256 && alt_phy > 0) {
519 const struct fdt_property *phy_prop;
520 struct fdt_property *alt_prop;
521 fdt32_t phy_handle_name;
522
523 /* Use the alt phy node instead.*/
524 phy_prop = fdt_get_property(initial_boot_params, eth, "phy-handle", NULL);
525 phy_handle_name = phy_prop->nameoff;
526 fdt_nop_node(initial_boot_params, phy);
527 fdt_nop_property(initial_boot_params, eth, "phy-handle");
528 alt_prop = fdt_get_property_w(initial_boot_params, eth, "cavium,alt-phy-handle", NULL);
529 alt_prop->nameoff = phy_handle_name;
530 phy = alt_phy;
531 }
532
533 phy_addr &= 0xff;
534
535 if (octeon_has_88e1145()) {
536 fdt_nop_property(initial_boot_params, phy, "marvell,reg-init");
537 memset(new_name, 0, sizeof(new_name));
538 strcpy(new_name, "marvell,88e1145");
539 p = fdt_getprop(initial_boot_params, phy, "compatible",
540 &current_len);
541 if (p && current_len >= strlen(new_name))
542 fdt_setprop_inplace(initial_boot_params, phy,
543 "compatible", new_name, current_len);
544 }
545
546 reg = fdt_getprop(initial_boot_params, phy, "reg", NULL);
547 if (phy_addr == be32_to_cpup(reg))
548 return;
549
550 fdt_setprop_inplace_cell(initial_boot_params, phy, "reg", phy_addr);
551
552 snprintf(new_name, sizeof(new_name), "ethernet-phy@%x", phy_addr);
553
554 p = fdt_get_name(initial_boot_params, phy, &current_len);
555 if (p && current_len == strlen(new_name))
556 fdt_set_name(initial_boot_params, phy, new_name);
557 else
558 pr_err("Error: could not rename ethernet phy: <%s>", p);
559 }
560
561 static void __init octeon_fdt_set_mac_addr(int n, u64 *pmac)
562 {
563 const u8 *old_mac;
564 int old_len;
565 u8 new_mac[6];
566 u64 mac = *pmac;
567 int r;
568
569 old_mac = fdt_getprop(initial_boot_params, n, "local-mac-address",
570 &old_len);
571 if (!old_mac || old_len != 6 || is_valid_ether_addr(old_mac))
572 return;
573
574 new_mac[0] = (mac >> 40) & 0xff;
575 new_mac[1] = (mac >> 32) & 0xff;
576 new_mac[2] = (mac >> 24) & 0xff;
577 new_mac[3] = (mac >> 16) & 0xff;
578 new_mac[4] = (mac >> 8) & 0xff;
579 new_mac[5] = mac & 0xff;
580
581 r = fdt_setprop_inplace(initial_boot_params, n, "local-mac-address",
582 new_mac, sizeof(new_mac));
583
584 if (r) {
585 pr_err("Setting \"local-mac-address\" failed %d", r);
586 return;
587 }
588 *pmac = mac + 1;
589 }
590
591 static void __init octeon_fdt_rm_ethernet(int node)
592 {
593 const __be32 *phy_handle;
594
595 phy_handle = fdt_getprop(initial_boot_params, node, "phy-handle", NULL);
596 if (phy_handle) {
597 u32 ph = be32_to_cpup(phy_handle);
598 int p = fdt_node_offset_by_phandle(initial_boot_params, ph);
599
600 if (p >= 0)
601 fdt_nop_node(initial_boot_params, p);
602 }
603 fdt_nop_node(initial_boot_params, node);
604 }
605
606 static void __init _octeon_rx_tx_delay(int eth, int rx_delay, int tx_delay)
607 {
608 fdt_setprop_inplace_cell(initial_boot_params, eth, "rx-delay",
609 rx_delay);
610 fdt_setprop_inplace_cell(initial_boot_params, eth, "tx-delay",
611 tx_delay);
612 }
613
614 static void __init octeon_rx_tx_delay(int eth, int iface, int port)
615 {
616 switch (cvmx_sysinfo_get()->board_type) {
617 case CVMX_BOARD_TYPE_CN3005_EVB_HS5:
618 if (iface == 0) {
619 if (port == 0) {
620 /*
621 * Boards with gigabit WAN ports need a
622 * different setting that is compatible with
623 * 100 Mbit settings
624 */
625 _octeon_rx_tx_delay(eth, 0xc, 0x0c);
626 return;
627 } else if (port == 1) {
628 /* Different config for switch port. */
629 _octeon_rx_tx_delay(eth, 0x0, 0x0);
630 return;
631 }
632 }
633 break;
634 case CVMX_BOARD_TYPE_UBNT_E100:
635 if (iface == 0 && port <= 2) {
636 _octeon_rx_tx_delay(eth, 0x0, 0x10);
637 return;
638 }
639 break;
640 }
641 fdt_nop_property(initial_boot_params, eth, "rx-delay");
642 fdt_nop_property(initial_boot_params, eth, "tx-delay");
643 }
644
645 static void __init octeon_fdt_pip_port(int iface, int i, int p, int max)
646 {
647 char name_buffer[20];
648 int eth;
649 int phy_addr;
650 int ipd_port;
651 int fixed_link;
652
653 snprintf(name_buffer, sizeof(name_buffer), "ethernet@%x", p);
654 eth = fdt_subnode_offset(initial_boot_params, iface, name_buffer);
655 if (eth < 0)
656 return;
657 if (p > max) {
658 pr_debug("Deleting port %x:%x\n", i, p);
659 octeon_fdt_rm_ethernet(eth);
660 return;
661 }
662 if (OCTEON_IS_MODEL(OCTEON_CN68XX))
663 ipd_port = (0x100 * i) + (0x10 * p) + 0x800;
664 else
665 ipd_port = 16 * i + p;
666
667 phy_addr = cvmx_helper_board_get_mii_address(ipd_port);
668 octeon_fdt_set_phy(eth, phy_addr);
669
670 fixed_link = fdt_subnode_offset(initial_boot_params, eth, "fixed-link");
671 if (fixed_link < 0)
672 WARN_ON(octeon_has_fixed_link(ipd_port));
673 else if (!octeon_has_fixed_link(ipd_port))
674 fdt_nop_node(initial_boot_params, fixed_link);
675 octeon_rx_tx_delay(eth, i, p);
676 }
677
678 static void __init octeon_fdt_pip_iface(int pip, int idx)
679 {
680 char name_buffer[20];
681 int iface;
682 int p;
683 int count = 0;
684
685 snprintf(name_buffer, sizeof(name_buffer), "interface@%d", idx);
686 iface = fdt_subnode_offset(initial_boot_params, pip, name_buffer);
687 if (iface < 0)
688 return;
689
690 if (cvmx_helper_interface_enumerate(idx) == 0)
691 count = cvmx_helper_ports_on_interface(idx);
692
693 for (p = 0; p < 16; p++)
694 octeon_fdt_pip_port(iface, idx, p, count - 1);
695 }
696
697 void __init octeon_fill_mac_addresses(void)
698 {
699 const char *alias_prop;
700 char name_buffer[20];
701 u64 mac_addr_base;
702 int aliases;
703 int pip;
704 int i;
705
706 aliases = fdt_path_offset(initial_boot_params, "/aliases");
707 if (aliases < 0)
708 return;
709
710 mac_addr_base =
711 ((octeon_bootinfo->mac_addr_base[0] & 0xffull)) << 40 |
712 ((octeon_bootinfo->mac_addr_base[1] & 0xffull)) << 32 |
713 ((octeon_bootinfo->mac_addr_base[2] & 0xffull)) << 24 |
714 ((octeon_bootinfo->mac_addr_base[3] & 0xffull)) << 16 |
715 ((octeon_bootinfo->mac_addr_base[4] & 0xffull)) << 8 |
716 (octeon_bootinfo->mac_addr_base[5] & 0xffull);
717
718 for (i = 0; i < 2; i++) {
719 int mgmt;
720
721 snprintf(name_buffer, sizeof(name_buffer), "mix%d", i);
722 alias_prop = fdt_getprop(initial_boot_params, aliases,
723 name_buffer, NULL);
724 if (!alias_prop)
725 continue;
726 mgmt = fdt_path_offset(initial_boot_params, alias_prop);
727 if (mgmt < 0)
728 continue;
729 octeon_fdt_set_mac_addr(mgmt, &mac_addr_base);
730 }
731
732 alias_prop = fdt_getprop(initial_boot_params, aliases, "pip", NULL);
733 if (!alias_prop)
734 return;
735
736 pip = fdt_path_offset(initial_boot_params, alias_prop);
737 if (pip < 0)
738 return;
739
740 for (i = 0; i <= 4; i++) {
741 int iface;
742 int p;
743
744 snprintf(name_buffer, sizeof(name_buffer), "interface@%d", i);
745 iface = fdt_subnode_offset(initial_boot_params, pip,
746 name_buffer);
747 if (iface < 0)
748 continue;
749 for (p = 0; p < 16; p++) {
750 int eth;
751
752 snprintf(name_buffer, sizeof(name_buffer),
753 "ethernet@%x", p);
754 eth = fdt_subnode_offset(initial_boot_params, iface,
755 name_buffer);
756 if (eth < 0)
757 continue;
758 octeon_fdt_set_mac_addr(eth, &mac_addr_base);
759 }
760 }
761 }
762
763 int __init octeon_prune_device_tree(void)
764 {
765 int i, max_port, uart_mask;
766 const char *pip_path;
767 const char *alias_prop;
768 char name_buffer[20];
769 int aliases;
770
771 if (fdt_check_header(initial_boot_params))
772 panic("Corrupt Device Tree.");
773
774 WARN(octeon_bootinfo->board_type == CVMX_BOARD_TYPE_CUST_DSR1000N,
775 "Built-in DTB booting is deprecated on %s. Please switch to use appended DTB.",
776 cvmx_board_type_to_string(octeon_bootinfo->board_type));
777
778 aliases = fdt_path_offset(initial_boot_params, "/aliases");
779 if (aliases < 0) {
780 pr_err("Error: No /aliases node in device tree.");
781 return -EINVAL;
782 }
783
784 if (OCTEON_IS_MODEL(OCTEON_CN52XX) || OCTEON_IS_MODEL(OCTEON_CN63XX))
785 max_port = 2;
786 else if (OCTEON_IS_MODEL(OCTEON_CN56XX) || OCTEON_IS_MODEL(OCTEON_CN68XX))
787 max_port = 1;
788 else
789 max_port = 0;
790
791 if (octeon_bootinfo->board_type == CVMX_BOARD_TYPE_NIC10E)
792 max_port = 0;
793
794 for (i = 0; i < 2; i++) {
795 int mgmt;
796
797 snprintf(name_buffer, sizeof(name_buffer),
798 "mix%d", i);
799 alias_prop = fdt_getprop(initial_boot_params, aliases,
800 name_buffer, NULL);
801 if (alias_prop) {
802 mgmt = fdt_path_offset(initial_boot_params, alias_prop);
803 if (mgmt < 0)
804 continue;
805 if (i >= max_port) {
806 pr_debug("Deleting mix%d\n", i);
807 octeon_fdt_rm_ethernet(mgmt);
808 fdt_nop_property(initial_boot_params, aliases,
809 name_buffer);
810 } else {
811 int phy_addr = cvmx_helper_board_get_mii_address(CVMX_HELPER_BOARD_MGMT_IPD_PORT + i);
812
813 octeon_fdt_set_phy(mgmt, phy_addr);
814 }
815 }
816 }
817
818 pip_path = fdt_getprop(initial_boot_params, aliases, "pip", NULL);
819 if (pip_path) {
820 int pip = fdt_path_offset(initial_boot_params, pip_path);
821
822 if (pip >= 0)
823 for (i = 0; i <= 4; i++)
824 octeon_fdt_pip_iface(pip, i);
825 }
826
827 /* I2C */
828 if (OCTEON_IS_MODEL(OCTEON_CN52XX) ||
829 OCTEON_IS_MODEL(OCTEON_CN63XX) ||
830 OCTEON_IS_MODEL(OCTEON_CN68XX) ||
831 OCTEON_IS_MODEL(OCTEON_CN56XX))
832 max_port = 2;
833 else
834 max_port = 1;
835
836 for (i = 0; i < 2; i++) {
837 int i2c;
838
839 snprintf(name_buffer, sizeof(name_buffer),
840 "twsi%d", i);
841 alias_prop = fdt_getprop(initial_boot_params, aliases,
842 name_buffer, NULL);
843
844 if (alias_prop) {
845 i2c = fdt_path_offset(initial_boot_params, alias_prop);
846 if (i2c < 0)
847 continue;
848 if (i >= max_port) {
849 pr_debug("Deleting twsi%d\n", i);
850 fdt_nop_node(initial_boot_params, i2c);
851 fdt_nop_property(initial_boot_params, aliases,
852 name_buffer);
853 }
854 }
855 }
856
857 /* SMI/MDIO */
858 if (OCTEON_IS_MODEL(OCTEON_CN68XX))
859 max_port = 4;
860 else if (OCTEON_IS_MODEL(OCTEON_CN52XX) ||
861 OCTEON_IS_MODEL(OCTEON_CN63XX) ||
862 OCTEON_IS_MODEL(OCTEON_CN56XX))
863 max_port = 2;
864 else
865 max_port = 1;
866
867 for (i = 0; i < 2; i++) {
868 int i2c;
869
870 snprintf(name_buffer, sizeof(name_buffer),
871 "smi%d", i);
872 alias_prop = fdt_getprop(initial_boot_params, aliases,
873 name_buffer, NULL);
874 if (alias_prop) {
875 i2c = fdt_path_offset(initial_boot_params, alias_prop);
876 if (i2c < 0)
877 continue;
878 if (i >= max_port) {
879 pr_debug("Deleting smi%d\n", i);
880 fdt_nop_node(initial_boot_params, i2c);
881 fdt_nop_property(initial_boot_params, aliases,
882 name_buffer);
883 }
884 }
885 }
886
887 /* Serial */
888 uart_mask = 3;
889
890 /* Right now CN52XX is the only chip with a third uart */
891 if (OCTEON_IS_MODEL(OCTEON_CN52XX))
892 uart_mask |= 4; /* uart2 */
893
894 for (i = 0; i < 3; i++) {
895 int uart;
896
897 snprintf(name_buffer, sizeof(name_buffer),
898 "uart%d", i);
899 alias_prop = fdt_getprop(initial_boot_params, aliases,
900 name_buffer, NULL);
901
902 if (alias_prop) {
903 uart = fdt_path_offset(initial_boot_params, alias_prop);
904 if (uart_mask & (1 << i)) {
905 __be32 f;
906
907 f = cpu_to_be32(octeon_get_io_clock_rate());
908 fdt_setprop_inplace(initial_boot_params,
909 uart, "clock-frequency",
910 &f, sizeof(f));
911 continue;
912 }
913 pr_debug("Deleting uart%d\n", i);
914 fdt_nop_node(initial_boot_params, uart);
915 fdt_nop_property(initial_boot_params, aliases,
916 name_buffer);
917 }
918 }
919
920 /* Compact Flash */
921 alias_prop = fdt_getprop(initial_boot_params, aliases,
922 "cf0", NULL);
923 if (alias_prop) {
924 union cvmx_mio_boot_reg_cfgx mio_boot_reg_cfg;
925 unsigned long base_ptr, region_base, region_size;
926 unsigned long region1_base = 0;
927 unsigned long region1_size = 0;
928 int cs, bootbus;
929 bool is_16bit = false;
930 bool is_true_ide = false;
931 __be32 new_reg[6];
932 __be32 *ranges;
933 int len;
934
935 int cf = fdt_path_offset(initial_boot_params, alias_prop);
936
937 base_ptr = 0;
938 if (octeon_bootinfo->major_version == 1
939 && octeon_bootinfo->minor_version >= 1) {
940 if (octeon_bootinfo->compact_flash_common_base_addr)
941 base_ptr = octeon_bootinfo->compact_flash_common_base_addr;
942 } else {
943 base_ptr = 0x1d000800;
944 }
945
946 if (!base_ptr)
947 goto no_cf;
948
949 /* Find CS0 region. */
950 for (cs = 0; cs < 8; cs++) {
951 mio_boot_reg_cfg.u64 = cvmx_read_csr(CVMX_MIO_BOOT_REG_CFGX(cs));
952 region_base = mio_boot_reg_cfg.s.base << 16;
953 region_size = (mio_boot_reg_cfg.s.size + 1) << 16;
954 if (mio_boot_reg_cfg.s.en && base_ptr >= region_base
955 && base_ptr < region_base + region_size) {
956 is_16bit = mio_boot_reg_cfg.s.width;
957 break;
958 }
959 }
960 if (cs >= 7) {
961 /* cs and cs + 1 are CS0 and CS1, both must be less than 8. */
962 goto no_cf;
963 }
964
965 if (!(base_ptr & 0xfffful)) {
966 /*
967 * Boot loader signals availability of DMA (true_ide
968 * mode) by setting low order bits of base_ptr to
969 * zero.
970 */
971
972 /* Asume that CS1 immediately follows. */
973 mio_boot_reg_cfg.u64 =
974 cvmx_read_csr(CVMX_MIO_BOOT_REG_CFGX(cs + 1));
975 region1_base = mio_boot_reg_cfg.s.base << 16;
976 region1_size = (mio_boot_reg_cfg.s.size + 1) << 16;
977 if (!mio_boot_reg_cfg.s.en)
978 goto no_cf;
979 is_true_ide = true;
980
981 } else {
982 fdt_nop_property(initial_boot_params, cf, "cavium,true-ide");
983 fdt_nop_property(initial_boot_params, cf, "cavium,dma-engine-handle");
984 if (!is_16bit) {
985 __be32 width = cpu_to_be32(8);
986
987 fdt_setprop_inplace(initial_boot_params, cf,
988 "cavium,bus-width", &width, sizeof(width));
989 }
990 }
991 new_reg[0] = cpu_to_be32(cs);
992 new_reg[1] = cpu_to_be32(0);
993 new_reg[2] = cpu_to_be32(0x10000);
994 new_reg[3] = cpu_to_be32(cs + 1);
995 new_reg[4] = cpu_to_be32(0);
996 new_reg[5] = cpu_to_be32(0x10000);
997 fdt_setprop_inplace(initial_boot_params, cf,
998 "reg", new_reg, sizeof(new_reg));
999
1000 bootbus = fdt_parent_offset(initial_boot_params, cf);
1001 if (bootbus < 0)
1002 goto no_cf;
1003 ranges = fdt_getprop_w(initial_boot_params, bootbus, "ranges", &len);
1004 if (!ranges || len < (5 * 8 * sizeof(__be32)))
1005 goto no_cf;
1006
1007 ranges[(cs * 5) + 2] = cpu_to_be32(region_base >> 32);
1008 ranges[(cs * 5) + 3] = cpu_to_be32(region_base & 0xffffffff);
1009 ranges[(cs * 5) + 4] = cpu_to_be32(region_size);
1010 if (is_true_ide) {
1011 cs++;
1012 ranges[(cs * 5) + 2] = cpu_to_be32(region1_base >> 32);
1013 ranges[(cs * 5) + 3] = cpu_to_be32(region1_base & 0xffffffff);
1014 ranges[(cs * 5) + 4] = cpu_to_be32(region1_size);
1015 }
1016 goto end_cf;
1017 no_cf:
1018 fdt_nop_node(initial_boot_params, cf);
1019
1020 end_cf:
1021 ;
1022 }
1023
1024 /* 8 char LED */
1025 alias_prop = fdt_getprop(initial_boot_params, aliases,
1026 "led0", NULL);
1027 if (alias_prop) {
1028 union cvmx_mio_boot_reg_cfgx mio_boot_reg_cfg;
1029 unsigned long base_ptr, region_base, region_size;
1030 int cs, bootbus;
1031 __be32 new_reg[6];
1032 __be32 *ranges;
1033 int len;
1034 int led = fdt_path_offset(initial_boot_params, alias_prop);
1035
1036 base_ptr = octeon_bootinfo->led_display_base_addr;
1037 if (base_ptr == 0)
1038 goto no_led;
1039 /* Find CS0 region. */
1040 for (cs = 0; cs < 8; cs++) {
1041 mio_boot_reg_cfg.u64 = cvmx_read_csr(CVMX_MIO_BOOT_REG_CFGX(cs));
1042 region_base = mio_boot_reg_cfg.s.base << 16;
1043 region_size = (mio_boot_reg_cfg.s.size + 1) << 16;
1044 if (mio_boot_reg_cfg.s.en && base_ptr >= region_base
1045 && base_ptr < region_base + region_size)
1046 break;
1047 }
1048
1049 if (cs > 7)
1050 goto no_led;
1051
1052 new_reg[0] = cpu_to_be32(cs);
1053 new_reg[1] = cpu_to_be32(0x20);
1054 new_reg[2] = cpu_to_be32(0x20);
1055 new_reg[3] = cpu_to_be32(cs);
1056 new_reg[4] = cpu_to_be32(0);
1057 new_reg[5] = cpu_to_be32(0x20);
1058 fdt_setprop_inplace(initial_boot_params, led,
1059 "reg", new_reg, sizeof(new_reg));
1060
1061 bootbus = fdt_parent_offset(initial_boot_params, led);
1062 if (bootbus < 0)
1063 goto no_led;
1064 ranges = fdt_getprop_w(initial_boot_params, bootbus, "ranges", &len);
1065 if (!ranges || len < (5 * 8 * sizeof(__be32)))
1066 goto no_led;
1067
1068 ranges[(cs * 5) + 2] = cpu_to_be32(region_base >> 32);
1069 ranges[(cs * 5) + 3] = cpu_to_be32(region_base & 0xffffffff);
1070 ranges[(cs * 5) + 4] = cpu_to_be32(region_size);
1071 goto end_led;
1072
1073 no_led:
1074 fdt_nop_node(initial_boot_params, led);
1075 end_led:
1076 ;
1077 }
1078
1079 #ifdef CONFIG_USB
1080 /* OHCI/UHCI USB */
1081 alias_prop = fdt_getprop(initial_boot_params, aliases,
1082 "uctl", NULL);
1083 if (alias_prop) {
1084 int uctl = fdt_path_offset(initial_boot_params, alias_prop);
1085
1086 if (uctl >= 0 && (!OCTEON_IS_MODEL(OCTEON_CN6XXX) ||
1087 octeon_bootinfo->board_type == CVMX_BOARD_TYPE_NIC2E)) {
1088 pr_debug("Deleting uctl\n");
1089 fdt_nop_node(initial_boot_params, uctl);
1090 fdt_nop_property(initial_boot_params, aliases, "uctl");
1091 } else if (octeon_bootinfo->board_type == CVMX_BOARD_TYPE_NIC10E ||
1092 octeon_bootinfo->board_type == CVMX_BOARD_TYPE_NIC4E) {
1093 /* Missing "refclk-type" defaults to crystal. */
1094 fdt_nop_property(initial_boot_params, uctl, "refclk-type");
1095 }
1096 }
1097
1098 /* DWC2 USB */
1099 alias_prop = fdt_getprop(initial_boot_params, aliases,
1100 "usbn", NULL);
1101 if (alias_prop) {
1102 int usbn = fdt_path_offset(initial_boot_params, alias_prop);
1103
1104 if (usbn >= 0 && (current_cpu_type() == CPU_CAVIUM_OCTEON2 ||
1105 !octeon_has_feature(OCTEON_FEATURE_USB))) {
1106 pr_debug("Deleting usbn\n");
1107 fdt_nop_node(initial_boot_params, usbn);
1108 fdt_nop_property(initial_boot_params, aliases, "usbn");
1109 } else {
1110 __be32 new_f[1];
1111 enum cvmx_helper_board_usb_clock_types c;
1112
1113 c = __cvmx_helper_board_usb_get_clock_type();
1114 switch (c) {
1115 case USB_CLOCK_TYPE_REF_48:
1116 new_f[0] = cpu_to_be32(48000000);
1117 fdt_setprop_inplace(initial_boot_params, usbn,
1118 "refclk-frequency", new_f, sizeof(new_f));
1119 fallthrough;
1120 case USB_CLOCK_TYPE_REF_12:
1121 /* Missing "refclk-type" defaults to external. */
1122 fdt_nop_property(initial_boot_params, usbn, "refclk-type");
1123 break;
1124 default:
1125 break;
1126 }
1127 }
1128 }
1129 #endif
1130
1131 return 0;
1132 }
1133
1134 static int __init octeon_publish_devices(void)
1135 {
1136 return of_platform_populate(NULL, octeon_ids, NULL, NULL);
1137 }
1138 arch_initcall(octeon_publish_devices);
Linux with added FPC-III support