aboutsummaryrefslogtreecommitdiffstats
path: root/arch/powerpc/platforms/fsl_uli1575.c
blob: 92ac9b52b32dfcfb6a469db4f90e07529042aa25 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
/*
 * ULI M1575 setup code - specific to Freescale boards
 *
 * Copyright 2007 Freescale Semiconductor Inc.
 *
 * This program is free software; you can redistribute  it and/or modify it
 * under  the terms of  the GNU General  Public License as published by the
 * Free Software Foundation;  either version 2 of the  License, or (at your
 * option) any later version.
 */

#include <linux/stddef.h>
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/interrupt.h>
#include <linux/mc146818rtc.h>

#include <asm/pci-bridge.h>

#define ULI_PIRQA	0x08
#define ULI_PIRQB	0x09
#define ULI_PIRQC	0x0a
#define ULI_PIRQD	0x0b
#define ULI_PIRQE	0x0c
#define ULI_PIRQF	0x0d
#define ULI_PIRQG	0x0e

#define ULI_8259_NONE	0x00
#define ULI_8259_IRQ1	0x08
#define ULI_8259_IRQ3	0x02
#define ULI_8259_IRQ4	0x04
#define ULI_8259_IRQ5	0x05
#define ULI_8259_IRQ6	0x07
#define ULI_8259_IRQ7	0x06
#define ULI_8259_IRQ9	0x01
#define ULI_8259_IRQ10	0x03
#define ULI_8259_IRQ11	0x09
#define ULI_8259_IRQ12	0x0b
#define ULI_8259_IRQ14	0x0d
#define ULI_8259_IRQ15	0x0f

u8 uli_pirq_to_irq[8] = {
	ULI_8259_IRQ9,		/* PIRQA */
	ULI_8259_IRQ10,		/* PIRQB */
	ULI_8259_IRQ11,		/* PIRQC */
	ULI_8259_IRQ12,		/* PIRQD */
	ULI_8259_IRQ5,		/* PIRQE */
	ULI_8259_IRQ6,		/* PIRQF */
	ULI_8259_IRQ7,		/* PIRQG */
	ULI_8259_NONE,		/* PIRQH */
};

static inline bool is_quirk_valid(void)
{
	return (machine_is(mpc86xx_hpcn) ||
		machine_is(mpc8544_ds) ||
		machine_is(p2020_ds) ||
		machine_is(mpc8572_ds));
}

/* Bridge */
static void early_uli5249(struct pci_dev *dev)
{
	unsigned char temp;

	if (!is_quirk_valid())
		return;

	pci_write_config_word(dev, PCI_COMMAND, PCI_COMMAND_IO |
		 PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);

	/* read/write lock */
	pci_read_config_byte(dev, 0x7c, &temp);
	pci_write_config_byte(dev, 0x7c, 0x80);

	/* set as P2P bridge */
	pci_write_config_byte(dev, PCI_CLASS_PROG, 0x01);
	dev->class |= 0x1;

	/* restore lock */
	pci_write_config_byte(dev, 0x7c, temp);
}


static void quirk_uli1575(struct pci_dev *dev)
{
	int i;

	if (!is_quirk_valid())
		return;

	/*
	 * ULI1575 interrupts route setup
	 */

	/* ULI1575 IRQ mapping conf register maps PIRQx to IRQn */
	for (i = 0; i < 4; i++) {
		u8 val = uli_pirq_to_irq[i*2] | (uli_pirq_to_irq[i*2+1] << 4);
		pci_write_config_byte(dev, 0x48 + i, val);
	}

	/* USB 1.1 OHCI controller 1: dev 28, func 0 - IRQ12 */
	pci_write_config_byte(dev, 0x86, ULI_PIRQD);

	/* USB 1.1 OHCI controller 2: dev 28, func 1 - IRQ9 */
	pci_write_config_byte(dev, 0x87, ULI_PIRQA);

	/* USB 1.1 OHCI controller 3: dev 28, func 2 - IRQ10 */
	pci_write_config_byte(dev, 0x88, ULI_PIRQB);

	/* Lan controller: dev 27, func 0 - IRQ6 */
	pci_write_config_byte(dev, 0x89, ULI_PIRQF);

	/* AC97 Audio controller: dev 29, func 0 - IRQ6 */
	pci_write_config_byte(dev, 0x8a, ULI_PIRQF);

	/* Modem controller: dev 29, func 1 - IRQ6 */
	pci_write_config_byte(dev, 0x8b, ULI_PIRQF);

	/* HD Audio controller: dev 29, func 2 - IRQ6 */
	pci_write_config_byte(dev, 0x8c, ULI_PIRQF);

	/* SATA controller: dev 31, func 1 - IRQ5 */
	pci_write_config_byte(dev, 0x8d, ULI_PIRQE);

	/* SMB interrupt: dev 30, func 1 - IRQ7 */
	pci_write_config_byte(dev, 0x8e, ULI_PIRQG);

	/* PMU ACPI SCI interrupt: dev 30, func 2 - IRQ7 */
	pci_write_config_byte(dev, 0x8f, ULI_PIRQG);

	/* USB 2.0 controller: dev 28, func 3 */
	pci_write_config_byte(dev, 0x74, ULI_8259_IRQ11);

	/* Primary PATA IDE IRQ: 14
	 * Secondary PATA IDE IRQ: 15
	 */
	pci_write_config_byte(dev, 0x44, 0x30 | ULI_8259_IRQ14);
	pci_write_config_byte(dev, 0x75, ULI_8259_IRQ15);
}

static void quirk_final_uli1575(struct pci_dev *dev)
{
	/* Set i8259 interrupt trigger
	 * IRQ 3:  Level
	 * IRQ 4:  Level
	 * IRQ 5:  Level
	 * IRQ 6:  Level
	 * IRQ 7:  Level
	 * IRQ 9:  Level
	 * IRQ 10: Level
	 * IRQ 11: Level
	 * IRQ 12: Level
	 * IRQ 14: Edge
	 * IRQ 15: Edge
	 */
	if (!is_quirk_valid())
		return;

	outb(0xfa, 0x4d0);
	outb(0x1e, 0x4d1);

	/* setup RTC */
	CMOS_WRITE(RTC_SET, RTC_CONTROL);
	CMOS_WRITE(RTC_24H, RTC_CONTROL);

	/* ensure month, date, and week alarm fields are ignored */
	CMOS_WRITE(0, RTC_VALID);

	outb_p(0x7c, 0x72);
	outb_p(RTC_ALARM_DONT_CARE, 0x73);

	outb_p(0x7d, 0x72);
	outb_p(RTC_ALARM_DONT_CARE, 0x73);
}

/* SATA */
static void quirk_uli5288(struct pci_dev *dev)
{
	unsigned char c;
	unsigned int d;

	if (!is_quirk_valid())
		return;

	/* read/write lock */
	pci_read_config_byte(dev, 0x83, &c);
	pci_write_config_byte(dev, 0x83, c|0x80);

	pci_read_config_dword(dev, PCI_CLASS_REVISION, &d);
	d = (d & 0xff) | (PCI_CLASS_STORAGE_SATA_AHCI << 8);
	pci_write_config_dword(dev, PCI_CLASS_REVISION, d);

	/* restore lock */
	pci_write_config_byte(dev, 0x83, c);

	/* disable emulated PATA mode enabled */
	pci_read_config_byte(dev, 0x84, &c);
	pci_write_config_byte(dev, 0x84, c & ~0x01);
}

/* PATA */
static void quirk_uli5229(struct pci_dev *dev)
{
	unsigned short temp;

	if (!is_quirk_valid())
		return;

	pci_write_config_word(dev, PCI_COMMAND, PCI_COMMAND_INTX_DISABLE |
		PCI_COMMAND_MASTER | PCI_COMMAND_IO);

	/* Enable Native IRQ 14/15 */
	pci_read_config_word(dev, 0x4a, &temp);
	pci_write_config_word(dev, 0x4a, temp | 0x1000);
}

/* We have to do a dummy read on the P2P for the RTC to work, WTF */
static void quirk_final_uli5249(struct pci_dev *dev)
{
	int i;
	u8 *dummy;
	struct pci_bus *bus = dev->bus;
	struct resource *res;
	resource_size_t end = 0;

	for (i = PCI_BRIDGE_RESOURCES; i < PCI_BRIDGE_RESOURCES+3; i++) {
		unsigned long flags = pci_resource_flags(dev, i);
		if ((flags & (IORESOURCE_MEM|IORESOURCE_PREFETCH)) == IORESOURCE_MEM)
			end = pci_resource_end(dev, i);
	}

	pci_bus_for_each_resource(bus, res, i) {
		if (res && res->flags & IORESOURCE_MEM) {
			if (res->end == end)
				dummy = ioremap(res->start, 0x4);
			else
				dummy = ioremap(res->end - 3, 0x4);
			if (dummy) {
				in_8(dummy);
				iounmap(dummy);
			}
			break;
		}
	}
}

DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AL, 0x5249, early_uli5249);
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x1575, quirk_uli1575);
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x5288, quirk_uli5288);
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x5229, quirk_uli5229);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, 0x5249, quirk_final_uli5249);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, 0x1575, quirk_final_uli1575);
DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AL, 0x5229, quirk_uli5229);

static void hpcd_quirk_uli1575(struct pci_dev *dev)
{
	u32 temp32;

	if (!machine_is(mpc86xx_hpcd))
		return;

	/* Disable INTx */
	pci_read_config_dword(dev, 0x48, &temp32);
	pci_write_config_dword(dev, 0x48, (temp32 | 1<<26));

	/* Enable sideband interrupt */
	pci_read_config_dword(dev, 0x90, &temp32);
	pci_write_config_dword(dev, 0x90, (temp32 | 1<<22));
}

static void hpcd_quirk_uli5288(struct pci_dev *dev)
{
	unsigned char c;

	if (!machine_is(mpc86xx_hpcd))
		return;

	pci_read_config_byte(dev, 0x83, &c);
	c |= 0x80;
	pci_write_config_byte(dev, 0x83, c);

	pci_write_config_byte(dev, PCI_CLASS_PROG, 0x01);
	pci_write_config_byte(dev, PCI_CLASS_DEVICE, 0x06);

	pci_read_config_byte(dev, 0x83, &c);
	c &= 0x7f;
	pci_write_config_byte(dev, 0x83, c);
}

/*
 * Since 8259PIC was disabled on the board, the IDE device can not
 * use the legacy IRQ, we need to let the IDE device work under
 * native mode and use the interrupt line like other PCI devices.
 * IRQ14 is a sideband interrupt from IDE device to CPU and we use this
 * as the interrupt for IDE device.
 */
static void hpcd_quirk_uli5229(struct pci_dev *dev)
{
	unsigned char c;

	if (!machine_is(mpc86xx_hpcd))
		return;

	pci_read_config_byte(dev, 0x4b, &c);
	c |= 0x10;
	pci_write_config_byte(dev, 0x4b, c);
}

/*
 * SATA interrupt pin bug fix
 * There's a chip bug for 5288, The interrupt pin should be 2,
 * not the read only value 1, So it use INTB#, not INTA# which
 * actually used by the IDE device 5229.
 * As of this bug, during the PCI initialization, 5288 read the
 * irq of IDE device from the device tree, this function fix this
 * bug by re-assigning a correct irq to 5288.
 *
 */
static void hpcd_final_uli5288(struct pci_dev *dev)
{
	struct pci_controller *hose = pci_bus_to_host(dev->bus);
	struct device_node *hosenode = hose ? hose->dn : NULL;
	struct of_irq oirq;
	int virq, pin = 2;
	u32 laddr[3];

	if (!machine_is(mpc86xx_hpcd))
		return;

	if (!hosenode)
		return;

	laddr[0] = (hose->first_busno << 16) | (PCI_DEVFN(31, 0) << 8);
	laddr[1] = laddr[2] = 0;
	of_irq_map_raw(hosenode, &pin, 1, laddr, &oirq);
	virq = irq_create_of_mapping(oirq.controller, oirq.specifier,
				     oirq.size);
	dev->irq = virq;
}

DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x1575, hpcd_quirk_uli1575);
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x5288, hpcd_quirk_uli5288);
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x5229, hpcd_quirk_uli5229);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, 0x5288, hpcd_final_uli5288);

int uli_exclude_device(struct pci_controller *hose,
			u_char bus, u_char devfn)
{
	if (bus == (hose->first_busno + 2)) {
		/* exclude Modem controller */
		if ((PCI_SLOT(devfn) == 29) && (PCI_FUNC(devfn) == 1))
			return PCIBIOS_DEVICE_NOT_FOUND;

		/* exclude HD Audio controller */
		if ((PCI_SLOT(devfn) == 29) && (PCI_FUNC(devfn) == 2))
			return PCIBIOS_DEVICE_NOT_FOUND;
	}

	return PCIBIOS_SUCCESSFUL;
}

Privacy Policy