projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| da6b737b SAS |
1 | /* |
| 2 | * Architecture specific OF callbacks. | |
| 3 | */ | |
| 4 | #include <linux/bootmem.h> | |
| 5 | #include <linux/io.h> | |
| 19c4f5f7 | 6 | #include <linux/interrupt.h> |
| da6b737b SAS |
7 | #include <linux/list.h> |
| 8 | #include <linux/of.h> | |
| 9 | #include <linux/of_fdt.h> | |
| 10 | #include <linux/of_platform.h> | |
| 11 | #include <linux/slab.h> | |
| 12 | ||
| 19c4f5f7 SAS |
13 | #include <asm/irq_controller.h> |
| 14 | ||
| da6b737b | 15 | char __initdata cmd_line[COMMAND_LINE_SIZE]; |
| 19c4f5f7 SAS |
16 | static LIST_HEAD(irq_domains); |
| 17 | static DEFINE_RAW_SPINLOCK(big_irq_lock); | |
| 18 | ||
| 19 | void add_interrupt_host(struct irq_domain *ih) | |
| 20 | { | |
| 21 | unsigned long flags; | |
| 22 | ||
| 23 | raw_spin_lock_irqsave(&big_irq_lock, flags); | |
| 24 | list_add(&ih->l, &irq_domains); | |
| 25 | raw_spin_unlock_irqrestore(&big_irq_lock, flags); | |
| 26 | } | |
| 27 | ||
| 28 | static struct irq_domain *get_ih_from_node(struct device_node *controller) | |
| 29 | { | |
| 30 | struct irq_domain *ih, *found = NULL; | |
| 31 | unsigned long flags; | |
| 32 | ||
| 33 | raw_spin_lock_irqsave(&big_irq_lock, flags); | |
| 34 | list_for_each_entry(ih, &irq_domains, l) { | |
| 35 | if (ih->controller == controller) { | |
| 36 | found = ih; | |
| 37 | break; | |
| 38 | } | |
| 39 | } | |
| 40 | raw_spin_unlock_irqrestore(&big_irq_lock, flags); | |
| 41 | return found; | |
| 42 | } | |
| da6b737b SAS |
43 | |
| 44 | unsigned int irq_create_of_mapping(struct device_node *controller, | |
| 45 | const u32 *intspec, unsigned int intsize) | |
| 46 | { | |
| 19c4f5f7 SAS |
47 | struct irq_domain *ih; |
| 48 | u32 virq, type; | |
| 49 | int ret; | |
| da6b737b | 50 | |
| 19c4f5f7 SAS |
51 | ih = get_ih_from_node(controller); |
| 52 | if (!ih) | |
| 53 | return 0; | |
| 54 | ret = ih->xlate(ih, intspec, intsize, &virq, &type); | |
| 55 | if (ret) | |
| 56 | return ret; | |
| 57 | if (type == IRQ_TYPE_NONE) | |
| 58 | return virq; | |
| 59 | /* set the mask if it is different from current */ | |
| 60 | if (type == (irq_to_desc(virq)->status & IRQF_TRIGGER_MASK)) | |
| 61 | set_irq_type(virq, type); | |
| 62 | return virq; | |
| da6b737b SAS |
63 | } |
| 64 | EXPORT_SYMBOL_GPL(irq_create_of_mapping); | |
| 65 | ||
| 66 | unsigned long pci_address_to_pio(phys_addr_t address) | |
| 67 | { | |
| 68 | /* | |
| 69 | * The ioport address can be directly used by inX / outX | |
| 70 | */ | |
| 71 | BUG_ON(address >= (1 << 16)); | |
| 72 | return (unsigned long)address; | |
| 73 | } | |
| 74 | EXPORT_SYMBOL_GPL(pci_address_to_pio); | |
| 75 | ||
| 76 | void __init early_init_dt_scan_chosen_arch(unsigned long node) | |
| 77 | { | |
| 78 | BUG(); | |
| 79 | } | |
| 80 | ||
| 81 | void __init early_init_dt_add_memory_arch(u64 base, u64 size) | |
| 82 | { | |
| 83 | BUG(); | |
| 84 | } | |
| 85 | ||
| 86 | void * __init early_init_dt_alloc_memory_arch(u64 size, u64 align) | |
| 87 | { | |
| 88 | return __alloc_bootmem(size, align, __pa(MAX_DMA_ADDRESS)); | |
| 89 | } | |
| 90 | ||
| 91 | void __init add_dtb(u64 data) | |
| 92 | { | |
| 93 | initial_boot_params = phys_to_virt((u64) (u32) data + | |
| 94 | offsetof(struct setup_data, data)); | |
| 95 | } |