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
|
/*
* MPC8610 HPCD board specific routines
*
* Initial author: Xianghua Xiao <x.xiao@freescale.com>
* Recode: Jason Jin <jason.jin@freescale.com>
*
* Rewrite the interrupt routing. remove the 8259PIC support,
* All the integrated device in ULI use sideband interrupt.
*
* 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/kdev_t.h>
#include <linux/delay.h>
#include <linux/seq_file.h>
#include <linux/of.h>
#include <asm/system.h>
#include <asm/time.h>
#include <asm/machdep.h>
#include <asm/pci-bridge.h>
#include <asm/mpc86xx.h>
#include <asm/prom.h>
#include <mm/mmu_decl.h>
#include <asm/udbg.h>
#include <asm/mpic.h>
#include <linux/of_platform.h>
#include <sysdev/fsl_pci.h>
#include <sysdev/fsl_soc.h>
static struct of_device_id __initdata mpc8610_ids[] = {
{ .compatible = "fsl,mpc8610-immr", },
{}
};
static int __init mpc8610_declare_of_platform_devices(void)
{
/* Without this call, the SSI device driver won't get probed. */
of_platform_bus_probe(NULL, mpc8610_ids, NULL);
return 0;
}
machine_device_initcall(mpc86xx_hpcd, mpc8610_declare_of_platform_devices);
void __init
mpc86xx_hpcd_init_irq(void)
{
struct mpic *mpic1;
struct device_node *np;
struct resource res;
/* Determine PIC address. */
np = of_find_node_by_type(NULL, "open-pic");
if (np == NULL)
return;
of_address_to_resource(np, 0, &res);
/* Alloc mpic structure and per isu has 16 INT entries. */
mpic1 = mpic_alloc(np, res.start,
MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
0, 256, " MPIC ");
BUG_ON(mpic1 == NULL);
mpic_init(mpic1);
}
#ifdef CONFIG_PCI
static void __devinit quirk_uli1575(struct pci_dev *dev)
{
u32 temp32;
/* 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 __devinit quirk_uli5288(struct pci_dev *dev)
{
unsigned char c;
unsigned short temp;
/* Interrupt Disable, Needed when SATA disabled */
pci_read_config_word(dev, PCI_COMMAND, &temp);
temp |= 1<<10;
pci_write_config_word(dev, PCI_COMMAND, temp);
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 __devinit quirk_uli5229(struct pci_dev *dev)
{
unsigned char c;
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 __devinit 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 (!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, 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, 0x5288, final_uli5288);
#endif /* CONFIG_PCI */
static void __init
mpc86xx_hpcd_setup_arch(void)
{
#ifdef CONFIG_PCI
struct device_node *np;
#endif
if (ppc_md.progress)
ppc_md.progress("mpc86xx_hpcd_setup_arch()", 0);
#ifdef CONFIG_PCI
for_each_node_by_type(np, "pci") {
if (of_device_is_compatible(np, "fsl,mpc8610-pci")
|| of_device_is_compatible(np, "fsl,mpc8641-pcie")) {
struct resource rsrc;
of_address_to_resource(np, 0, &rsrc);
if ((rsrc.start & 0xfffff) == 0xa000)
fsl_add_bridge(np, 1);
else
fsl_add_bridge(np, 0);
}
}
#endif
printk("MPC86xx HPCD board from Freescale Semiconductor\n");
}
/*
* Called very early, device-tree isn't unflattened
*/
static int __init mpc86xx_hpcd_probe(void)
{
unsigned long root = of_get_flat_dt_root();
if (of_flat_dt_is_compatible(root, "fsl,MPC8610HPCD"))
return 1; /* Looks good */
return 0;
}
long __init
mpc86xx_time_init(void)
{
unsigned int temp;
/* Set the time base to zero */
mtspr(SPRN_TBWL, 0);
mtspr(SPRN_TBWU, 0);
temp = mfspr(SPRN_HID0);
temp |= HID0_TBEN;
mtspr(SPRN_HID0, temp);
asm volatile("isync");
return 0;
}
define_machine(mpc86xx_hpcd) {
.name = "MPC86xx HPCD",
.probe = mpc86xx_hpcd_probe,
.setup_arch = mpc86xx_hpcd_setup_arch,
.init_IRQ = mpc86xx_hpcd_init_irq,
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.time_init = mpc86xx_time_init,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
.pcibios_fixup_bus = fsl_pcibios_fixup_bus,
};
|
