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
|
/*
* Architecture specific OF callbacks.
*/
#include <linux/bootmem.h>
#include <linux/io.h>
#include <linux/interrupt.h>
#include <linux/list.h>
#include <linux/of.h>
#include <linux/of_fdt.h>
#include <linux/of_platform.h>
#include <linux/slab.h>
#include <asm/irq_controller.h>
char __initdata cmd_line[COMMAND_LINE_SIZE];
static LIST_HEAD(irq_domains);
static DEFINE_RAW_SPINLOCK(big_irq_lock);
void add_interrupt_host(struct irq_domain *ih)
{
unsigned long flags;
raw_spin_lock_irqsave(&big_irq_lock, flags);
list_add(&ih->l, &irq_domains);
raw_spin_unlock_irqrestore(&big_irq_lock, flags);
}
static struct irq_domain *get_ih_from_node(struct device_node *controller)
{
struct irq_domain *ih, *found = NULL;
unsigned long flags;
raw_spin_lock_irqsave(&big_irq_lock, flags);
list_for_each_entry(ih, &irq_domains, l) {
if (ih->controller == controller) {
found = ih;
break;
}
}
raw_spin_unlock_irqrestore(&big_irq_lock, flags);
return found;
}
unsigned int irq_create_of_mapping(struct device_node *controller,
const u32 *intspec, unsigned int intsize)
{
struct irq_domain *ih;
u32 virq, type;
int ret;
ih = get_ih_from_node(controller);
if (!ih)
return 0;
ret = ih->xlate(ih, intspec, intsize, &virq, &type);
if (ret)
return ret;
if (type == IRQ_TYPE_NONE)
return virq;
/* set the mask if it is different from current */
if (type == (irq_to_desc(virq)->status & IRQF_TRIGGER_MASK))
set_irq_type(virq, type);
return virq;
}
EXPORT_SYMBOL_GPL(irq_create_of_mapping);
unsigned long pci_address_to_pio(phys_addr_t address)
{
/*
* The ioport address can be directly used by inX / outX
*/
BUG_ON(address >= (1 << 16));
return (unsigned long)address;
}
EXPORT_SYMBOL_GPL(pci_address_to_pio);
void __init early_init_dt_scan_chosen_arch(unsigned long node)
{
BUG();
}
void __init early_init_dt_add_memory_arch(u64 base, u64 size)
{
BUG();
}
void * __init early_init_dt_alloc_memory_arch(u64 size, u64 align)
{
return __alloc_bootmem(size, align, __pa(MAX_DMA_ADDRESS));
}
void __init add_dtb(u64 data)
{
initial_boot_params = phys_to_virt((u64) (u32) data +
offsetof(struct setup_data, data));
}
|
