powerpc/fsl-pci: Unify pci/pcie initialization code
[deliverable/linux.git] / arch / powerpc / platforms / 85xx / mpc85xx_mds.c
CommitLineData
c2882bb1 1/*
c141b38f
ZF
2 * Copyright (C) 2006-2010, 2012 Freescale Semicondutor, Inc.
3 * All rights reserved.
c2882bb1
AF
4 *
5 * Author: Andy Fleming <afleming@freescale.com>
6 *
7 * Based on 83xx/mpc8360e_pb.c by:
8 * Li Yang <LeoLi@freescale.com>
9 * Yin Olivia <Hong-hua.Yin@freescale.com>
10 *
11 * Description:
23f510bc 12 * MPC85xx MDS board specific routines.
c2882bb1
AF
13 *
14 * This program is free software; you can redistribute it and/or modify it
15 * under the terms of the GNU General Public License as published by the
16 * Free Software Foundation; either version 2 of the License, or (at your
17 * option) any later version.
18 */
19
20#include <linux/stddef.h>
21#include <linux/kernel.h>
22#include <linux/init.h>
23#include <linux/errno.h>
24#include <linux/reboot.h>
25#include <linux/pci.h>
26#include <linux/kdev_t.h>
27#include <linux/major.h>
28#include <linux/console.h>
29#include <linux/delay.h>
30#include <linux/seq_file.h>
c2882bb1 31#include <linux/initrd.h>
c2882bb1 32#include <linux/fsl_devices.h>
882407b9
JL
33#include <linux/of_platform.h>
34#include <linux/of_device.h>
94833a42 35#include <linux/phy.h>
95f72d1e 36#include <linux/memblock.h>
c2882bb1 37
60063497 38#include <linux/atomic.h>
c2882bb1
AF
39#include <asm/time.h>
40#include <asm/io.h>
41#include <asm/machdep.h>
c2882bb1 42#include <asm/pci-bridge.h>
c2882bb1
AF
43#include <asm/irq.h>
44#include <mm/mmu_decl.h>
45#include <asm/prom.h>
46#include <asm/udbg.h>
47#include <sysdev/fsl_soc.h>
3f6c5dae 48#include <sysdev/fsl_pci.h>
9b9d401b 49#include <sysdev/simple_gpio.h>
c2882bb1
AF
50#include <asm/qe.h>
51#include <asm/qe_ic.h>
52#include <asm/mpic.h>
152d0182 53#include <asm/swiotlb.h>
c141b38f 54#include <asm/fsl_guts.h>
582d3e09 55#include "smp.h"
c2882bb1 56
543a07b1
DES
57#include "mpc85xx.h"
58
c2882bb1
AF
59#undef DEBUG
60#ifdef DEBUG
61#define DBG(fmt...) udbg_printf(fmt)
62#else
63#define DBG(fmt...)
64#endif
65
94833a42
AF
66#define MV88E1111_SCR 0x10
67#define MV88E1111_SCR_125CLK 0x0010
68static int mpc8568_fixup_125_clock(struct phy_device *phydev)
69{
70 int scr;
71 int err;
72
73 /* Workaround for the 125 CLK Toggle */
74 scr = phy_read(phydev, MV88E1111_SCR);
75
76 if (scr < 0)
77 return scr;
78
79 err = phy_write(phydev, MV88E1111_SCR, scr & ~(MV88E1111_SCR_125CLK));
80
81 if (err)
82 return err;
83
84 err = phy_write(phydev, MII_BMCR, BMCR_RESET);
85
86 if (err)
87 return err;
88
89 scr = phy_read(phydev, MV88E1111_SCR);
90
91 if (scr < 0)
29827b02 92 return scr;
94833a42
AF
93
94 err = phy_write(phydev, MV88E1111_SCR, scr | 0x0008);
95
96 return err;
97}
98
99static int mpc8568_mds_phy_fixups(struct phy_device *phydev)
100{
101 int temp;
102 int err;
103
104 /* Errata */
105 err = phy_write(phydev,29, 0x0006);
106
107 if (err)
108 return err;
109
110 temp = phy_read(phydev, 30);
111
112 if (temp < 0)
113 return temp;
114
115 temp = (temp & (~0x8000)) | 0x4000;
116 err = phy_write(phydev,30, temp);
117
118 if (err)
119 return err;
120
121 err = phy_write(phydev,29, 0x000a);
122
123 if (err)
124 return err;
125
126 temp = phy_read(phydev, 30);
127
128 if (temp < 0)
129 return temp;
130
131 temp = phy_read(phydev, 30);
132
133 if (temp < 0)
134 return temp;
135
136 temp &= ~0x0020;
137
138 err = phy_write(phydev,30,temp);
139
140 if (err)
141 return err;
142
143 /* Disable automatic MDI/MDIX selection */
144 temp = phy_read(phydev, 16);
145
146 if (temp < 0)
147 return temp;
148
149 temp &= ~0x0060;
150 err = phy_write(phydev,16,temp);
151
152 return err;
153}
154
c2882bb1
AF
155/* ************************************************************************
156 *
157 * Setup the architecture
158 *
159 */
dee9ad71 160#ifdef CONFIG_QUICC_ENGINE
99d8238f 161static void __init mpc85xx_mds_reset_ucc_phys(void)
c2882bb1
AF
162{
163 struct device_node *np;
99d8238f 164 static u8 __iomem *bcsr_regs;
c2882bb1 165
c2882bb1
AF
166 /* Map BCSR area */
167 np = of_find_node_by_name(NULL, "bcsr");
99d8238f
AV
168 if (!np)
169 return;
c2882bb1 170
99d8238f
AV
171 bcsr_regs = of_iomap(np, 0);
172 of_node_put(np);
173 if (!bcsr_regs)
174 return;
c2882bb1 175
99d8238f
AV
176 if (machine_is(mpc8568_mds)) {
177#define BCSR_UCC1_GETH_EN (0x1 << 7)
178#define BCSR_UCC2_GETH_EN (0x1 << 7)
179#define BCSR_UCC1_MODE_MSK (0x3 << 4)
180#define BCSR_UCC2_MODE_MSK (0x3 << 0)
152d0182 181
99d8238f
AV
182 /* Turn off UCC1 & UCC2 */
183 clrbits8(&bcsr_regs[8], BCSR_UCC1_GETH_EN);
184 clrbits8(&bcsr_regs[9], BCSR_UCC2_GETH_EN);
185
186 /* Mode is RGMII, all bits clear */
187 clrbits8(&bcsr_regs[11], BCSR_UCC1_MODE_MSK |
188 BCSR_UCC2_MODE_MSK);
189
190 /* Turn UCC1 & UCC2 on */
191 setbits8(&bcsr_regs[8], BCSR_UCC1_GETH_EN);
192 setbits8(&bcsr_regs[9], BCSR_UCC2_GETH_EN);
193 } else if (machine_is(mpc8569_mds)) {
194#define BCSR7_UCC12_GETHnRST (0x1 << 2)
195#define BCSR8_UEM_MARVELL_RST (0x1 << 1)
196#define BCSR_UCC_RGMII (0x1 << 6)
197#define BCSR_UCC_RTBI (0x1 << 5)
198 /*
199 * U-Boot mangles interrupt polarity for Marvell PHYs,
200 * so reset built-in and UEM Marvell PHYs, this puts
201 * the PHYs into their normal state.
202 */
203 clrbits8(&bcsr_regs[7], BCSR7_UCC12_GETHnRST);
204 setbits8(&bcsr_regs[8], BCSR8_UEM_MARVELL_RST);
205
206 setbits8(&bcsr_regs[7], BCSR7_UCC12_GETHnRST);
207 clrbits8(&bcsr_regs[8], BCSR8_UEM_MARVELL_RST);
208
209 for (np = NULL; (np = of_find_compatible_node(np,
210 "network",
211 "ucc_geth")) != NULL;) {
212 const unsigned int *prop;
213 int ucc_num;
214
215 prop = of_get_property(np, "cell-index", NULL);
216 if (prop == NULL)
217 continue;
218
219 ucc_num = *prop - 1;
220
221 prop = of_get_property(np, "phy-connection-type", NULL);
222 if (prop == NULL)
223 continue;
224
225 if (strcmp("rtbi", (const char *)prop) == 0)
226 clrsetbits_8(&bcsr_regs[7 + ucc_num],
227 BCSR_UCC_RGMII, BCSR_UCC_RTBI);
c9438aff 228 }
99d8238f
AV
229 } else if (machine_is(p1021_mds)) {
230#define BCSR11_ENET_MICRST (0x1 << 5)
231 /* Reset Micrel PHY */
232 clrbits8(&bcsr_regs[11], BCSR11_ENET_MICRST);
233 setbits8(&bcsr_regs[11], BCSR11_ENET_MICRST);
c9438aff 234 }
c2882bb1 235
99d8238f
AV
236 iounmap(bcsr_regs);
237}
48936a08 238
99d8238f
AV
239static void __init mpc85xx_mds_qe_init(void)
240{
241 struct device_node *np;
48936a08 242
a2dd70a1
AV
243 np = of_find_compatible_node(NULL, NULL, "fsl,qe");
244 if (!np) {
245 np = of_find_node_by_name(NULL, "qe");
246 if (!np)
247 return;
c2882bb1
AF
248 }
249
dee9ad71
AV
250 if (!of_device_is_available(np)) {
251 of_node_put(np);
252 return;
253 }
254
a2dd70a1
AV
255 qe_reset();
256 of_node_put(np);
257
258 np = of_find_node_by_name(NULL, "par_io");
259 if (np) {
260 struct device_node *ucc;
c2882bb1
AF
261
262 par_io_init(np);
263 of_node_put(np);
264
a2dd70a1 265 for_each_node_by_name(ucc, "ucc")
c2882bb1 266 par_io_of_config(ucc);
c2882bb1
AF
267 }
268
99d8238f 269 mpc85xx_mds_reset_ucc_phys();
48936a08
HW
270
271 if (machine_is(p1021_mds)) {
48936a08 272
9cb6abcb 273 struct ccsr_guts __iomem *guts;
48936a08 274
c141b38f 275 np = of_find_node_by_name(NULL, "global-utilities");
48936a08 276 if (np) {
c141b38f
ZF
277 guts = of_iomap(np, 0);
278 if (!guts)
279 pr_err("mpc85xx-rdb: could not map global utilities register\n");
280 else{
48936a08
HW
281 /* P1021 has pins muxed for QE and other functions. To
282 * enable QE UEC mode, we need to set bit QE0 for UCC1
283 * in Eth mode, QE0 and QE3 for UCC5 in Eth mode, QE9
8dd11f80 284 * and QE12 for QE MII management signals in PMUXCR
48936a08
HW
285 * register.
286 */
c141b38f
ZF
287 setbits32(&guts->pmuxcr, MPC85xx_PMUXCR_QE(0) |
288 MPC85xx_PMUXCR_QE(3) |
289 MPC85xx_PMUXCR_QE(9) |
290 MPC85xx_PMUXCR_QE(12));
291 iounmap(guts);
292 }
48936a08
HW
293 of_node_put(np);
294 }
295
296 }
99d8238f
AV
297}
298
299static void __init mpc85xx_mds_qeic_init(void)
300{
301 struct device_node *np;
302
303 np = of_find_compatible_node(NULL, NULL, "fsl,qe");
304 if (!of_device_is_available(np)) {
305 of_node_put(np);
306 return;
307 }
308
309 np = of_find_compatible_node(NULL, NULL, "fsl,qe-ic");
310 if (!np) {
311 np = of_find_node_by_type(NULL, "qeic");
312 if (!np)
313 return;
314 }
315
316 if (machine_is(p1021_mds))
317 qe_ic_init(np, 0, qe_ic_cascade_low_mpic,
318 qe_ic_cascade_high_mpic);
319 else
320 qe_ic_init(np, 0, qe_ic_cascade_muxed_mpic, NULL);
321 of_node_put(np);
322}
323#else
99d8238f
AV
324static void __init mpc85xx_mds_qe_init(void) { }
325static void __init mpc85xx_mds_qeic_init(void) { }
c2882bb1 326#endif /* CONFIG_QUICC_ENGINE */
152d0182 327
99d8238f
AV
328static void __init mpc85xx_mds_setup_arch(void)
329{
99d8238f
AV
330 if (ppc_md.progress)
331 ppc_md.progress("mpc85xx_mds_setup_arch()", 0);
332
99d8238f 333 mpc85xx_smp_init();
99d8238f
AV
334
335 mpc85xx_mds_qe_init();
336
905e75c4
JH
337 fsl_pci_assign_primary();
338
339 swiotlb_detect_4g();
c2882bb1
AF
340}
341
94833a42
AF
342
343static int __init board_fixups(void)
344{
aab0d375 345 char phy_id[20];
94833a42
AF
346 char *compstrs[2] = {"fsl,gianfar-mdio", "fsl,ucc-mdio"};
347 struct device_node *mdio;
348 struct resource res;
349 int i;
350
351 for (i = 0; i < ARRAY_SIZE(compstrs); i++) {
352 mdio = of_find_compatible_node(NULL, NULL, compstrs[i]);
353
354 of_address_to_resource(mdio, 0, &res);
aab0d375 355 snprintf(phy_id, sizeof(phy_id), "%llx:%02x",
24a99596 356 (unsigned long long)res.start, 1);
94833a42
AF
357
358 phy_register_fixup_for_id(phy_id, mpc8568_fixup_125_clock);
359 phy_register_fixup_for_id(phy_id, mpc8568_mds_phy_fixups);
360
361 /* Register a workaround for errata */
aab0d375 362 snprintf(phy_id, sizeof(phy_id), "%llx:%02x",
24a99596 363 (unsigned long long)res.start, 7);
94833a42
AF
364 phy_register_fixup_for_id(phy_id, mpc8568_mds_phy_fixups);
365
366 of_node_put(mdio);
367 }
368
369 return 0;
370}
ea5130dc 371machine_arch_initcall(mpc8568_mds, board_fixups);
4b3b42b3 372machine_arch_initcall(mpc8569_mds, board_fixups);
94833a42 373
23f510bc 374static int __init mpc85xx_publish_devices(void)
c2882bb1 375{
e98efaf3
AV
376 if (machine_is(mpc8568_mds))
377 simple_gpiochip_init("fsl,mpc8568mds-bcsr-gpio");
9b9d401b
AV
378 if (machine_is(mpc8569_mds))
379 simple_gpiochip_init("fsl,mpc8569mds-bcsr-gpio");
380
8a95bc8d 381 return mpc85xx_common_publish_devices();
48936a08
HW
382}
383
905e75c4
JH
384machine_arch_initcall(mpc8568_mds, mpc85xx_publish_devices);
385machine_arch_initcall(mpc8569_mds, mpc85xx_publish_devices);
386machine_arch_initcall(p1021_mds, mpc85xx_common_publish_devices);
c2882bb1 387
152d0182
KG
388machine_arch_initcall(mpc8568_mds, swiotlb_setup_bus_notifier);
389machine_arch_initcall(mpc8569_mds, swiotlb_setup_bus_notifier);
48936a08 390machine_arch_initcall(p1021_mds, swiotlb_setup_bus_notifier);
152d0182 391
23f510bc 392static void __init mpc85xx_mds_pic_init(void)
c2882bb1 393{
e55d7f73 394 struct mpic *mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN |
5019609f 395 MPIC_SINGLE_DEST_CPU,
b533f8ae 396 0, 256, " OpenPIC ");
c2882bb1 397 BUG_ON(mpic == NULL);
c2882bb1 398
c2882bb1 399 mpic_init(mpic);
99d8238f 400 mpc85xx_mds_qeic_init();
c2882bb1
AF
401}
402
23f510bc 403static int __init mpc85xx_mds_probe(void)
c2882bb1 404{
6936c625 405 unsigned long root = of_get_flat_dt_root();
c2882bb1 406
6936c625 407 return of_flat_dt_is_compatible(root, "MPC85xxMDS");
c2882bb1
AF
408}
409
ea5130dc
HW
410define_machine(mpc8568_mds) {
411 .name = "MPC8568 MDS",
23f510bc
KG
412 .probe = mpc85xx_mds_probe,
413 .setup_arch = mpc85xx_mds_setup_arch,
414 .init_IRQ = mpc85xx_mds_pic_init,
c2882bb1 415 .get_irq = mpic_get_irq,
e1c1575f 416 .restart = fsl_rstcr_restart,
c2882bb1
AF
417 .calibrate_decr = generic_calibrate_decr,
418 .progress = udbg_progress,
2af8569d 419#ifdef CONFIG_PCI
aa3c1121 420 .pcibios_fixup_bus = fsl_pcibios_fixup_bus,
2af8569d 421#endif
c2882bb1 422};
4b3b42b3
HW
423
424static int __init mpc8569_mds_probe(void)
425{
426 unsigned long root = of_get_flat_dt_root();
427
428 return of_flat_dt_is_compatible(root, "fsl,MPC8569EMDS");
429}
430
431define_machine(mpc8569_mds) {
432 .name = "MPC8569 MDS",
433 .probe = mpc8569_mds_probe,
434 .setup_arch = mpc85xx_mds_setup_arch,
435 .init_IRQ = mpc85xx_mds_pic_init,
436 .get_irq = mpic_get_irq,
437 .restart = fsl_rstcr_restart,
438 .calibrate_decr = generic_calibrate_decr,
439 .progress = udbg_progress,
440#ifdef CONFIG_PCI
441 .pcibios_fixup_bus = fsl_pcibios_fixup_bus,
442#endif
443};
48936a08
HW
444
445static int __init p1021_mds_probe(void)
446{
447 unsigned long root = of_get_flat_dt_root();
448
449 return of_flat_dt_is_compatible(root, "fsl,P1021MDS");
450
451}
452
453define_machine(p1021_mds) {
454 .name = "P1021 MDS",
455 .probe = p1021_mds_probe,
456 .setup_arch = mpc85xx_mds_setup_arch,
457 .init_IRQ = mpc85xx_mds_pic_init,
458 .get_irq = mpic_get_irq,
459 .restart = fsl_rstcr_restart,
460 .calibrate_decr = generic_calibrate_decr,
461 .progress = udbg_progress,
462#ifdef CONFIG_PCI
463 .pcibios_fixup_bus = fsl_pcibios_fixup_bus,
464#endif
465};
466
This page took 0.467052 seconds and 5 git commands to generate.