1 | #ifndef HW_ISA_H |
2 | #define HW_ISA_H |
3 | |
4 | /* ISA bus */ |
5 | |
6 | #include "exec/memory.h" |
7 | #include "exec/ioport.h" |
8 | #include "hw/qdev-core.h" |
9 | |
10 | #define ISA_NUM_IRQS 16 |
11 | |
12 | #define TYPE_ISA_DEVICE "isa-device" |
13 | #define ISA_DEVICE(obj) \ |
14 | OBJECT_CHECK(ISADevice, (obj), TYPE_ISA_DEVICE) |
15 | #define ISA_DEVICE_CLASS(klass) \ |
16 | OBJECT_CLASS_CHECK(ISADeviceClass, (klass), TYPE_ISA_DEVICE) |
17 | #define ISA_DEVICE_GET_CLASS(obj) \ |
18 | OBJECT_GET_CLASS(ISADeviceClass, (obj), TYPE_ISA_DEVICE) |
19 | |
20 | #define TYPE_ISA_BUS "ISA" |
21 | #define ISA_BUS(obj) OBJECT_CHECK(ISABus, (obj), TYPE_ISA_BUS) |
22 | |
23 | #define TYPE_APPLE_SMC "isa-applesmc" |
24 | #define APPLESMC_MAX_DATA_LENGTH 32 |
25 | #define APPLESMC_PROP_IO_BASE "iobase" |
26 | |
27 | static inline uint16_t applesmc_port(void) |
28 | { |
29 | Object *obj = object_resolve_path_type("" , TYPE_APPLE_SMC, NULL); |
30 | |
31 | if (obj) { |
32 | return object_property_get_uint(obj, APPLESMC_PROP_IO_BASE, NULL); |
33 | } |
34 | return 0; |
35 | } |
36 | |
37 | #define TYPE_ISADMA "isa-dma" |
38 | |
39 | #define ISADMA_CLASS(klass) \ |
40 | OBJECT_CLASS_CHECK(IsaDmaClass, (klass), TYPE_ISADMA) |
41 | #define ISADMA_GET_CLASS(obj) \ |
42 | OBJECT_GET_CLASS(IsaDmaClass, (obj), TYPE_ISADMA) |
43 | #define ISADMA(obj) \ |
44 | INTERFACE_CHECK(IsaDma, (obj), TYPE_ISADMA) |
45 | |
46 | typedef enum { |
47 | ISADMA_TRANSFER_VERIFY, |
48 | ISADMA_TRANSFER_READ, |
49 | ISADMA_TRANSFER_WRITE, |
50 | ISADMA_TRANSFER_ILLEGAL, |
51 | } IsaDmaTransferMode; |
52 | |
53 | typedef int (*IsaDmaTransferHandler)(void *opaque, int nchan, int pos, |
54 | int size); |
55 | |
56 | typedef struct IsaDmaClass { |
57 | InterfaceClass parent; |
58 | |
59 | IsaDmaTransferMode (*get_transfer_mode)(IsaDma *obj, int nchan); |
60 | bool (*has_autoinitialization)(IsaDma *obj, int nchan); |
61 | int (*read_memory)(IsaDma *obj, int nchan, void *buf, int pos, int len); |
62 | int (*write_memory)(IsaDma *obj, int nchan, void *buf, int pos, int len); |
63 | void (*hold_DREQ)(IsaDma *obj, int nchan); |
64 | void (*release_DREQ)(IsaDma *obj, int nchan); |
65 | void (*schedule)(IsaDma *obj); |
66 | void (*register_channel)(IsaDma *obj, int nchan, |
67 | IsaDmaTransferHandler transfer_handler, |
68 | void *opaque); |
69 | } IsaDmaClass; |
70 | |
71 | typedef struct ISADeviceClass { |
72 | DeviceClass parent_class; |
73 | } ISADeviceClass; |
74 | |
75 | struct ISABus { |
76 | /*< private >*/ |
77 | BusState parent_obj; |
78 | /*< public >*/ |
79 | |
80 | MemoryRegion *address_space; |
81 | MemoryRegion *address_space_io; |
82 | qemu_irq *irqs; |
83 | IsaDma *dma[2]; |
84 | }; |
85 | |
86 | struct ISADevice { |
87 | /*< private >*/ |
88 | DeviceState parent_obj; |
89 | /*< public >*/ |
90 | |
91 | uint32_t isairq[2]; |
92 | int nirqs; |
93 | int ioport_id; |
94 | }; |
95 | |
96 | ISABus *isa_bus_new(DeviceState *dev, MemoryRegion *address_space, |
97 | MemoryRegion *address_space_io, Error **errp); |
98 | void isa_bus_irqs(ISABus *bus, qemu_irq *irqs); |
99 | qemu_irq isa_get_irq(ISADevice *dev, int isairq); |
100 | void isa_init_irq(ISADevice *dev, qemu_irq *p, int isairq); |
101 | void isa_connect_gpio_out(ISADevice *isadev, int gpioirq, int isairq); |
102 | void isa_bus_dma(ISABus *bus, IsaDma *dma8, IsaDma *dma16); |
103 | IsaDma *isa_get_dma(ISABus *bus, int nchan); |
104 | MemoryRegion *isa_address_space(ISADevice *dev); |
105 | MemoryRegion *isa_address_space_io(ISADevice *dev); |
106 | ISADevice *isa_create(ISABus *bus, const char *name); |
107 | ISADevice *isa_try_create(ISABus *bus, const char *name); |
108 | ISADevice *isa_create_simple(ISABus *bus, const char *name); |
109 | |
110 | ISADevice *isa_vga_init(ISABus *bus); |
111 | |
112 | /** |
113 | * isa_register_ioport: Install an I/O port region on the ISA bus. |
114 | * |
115 | * Register an I/O port region via memory_region_add_subregion |
116 | * inside the ISA I/O address space. |
117 | * |
118 | * @dev: the ISADevice against which these are registered; may be NULL. |
119 | * @io: the #MemoryRegion being registered. |
120 | * @start: the base I/O port. |
121 | */ |
122 | void isa_register_ioport(ISADevice *dev, MemoryRegion *io, uint16_t start); |
123 | |
124 | /** |
125 | * isa_register_portio_list: Initialize a set of ISA io ports |
126 | * |
127 | * Several ISA devices have many dis-joint I/O ports. Worse, these I/O |
128 | * ports can be interleaved with I/O ports from other devices. This |
129 | * function makes it easy to create multiple MemoryRegions for a single |
130 | * device and use the legacy portio routines. |
131 | * |
132 | * @dev: the ISADevice against which these are registered; may be NULL. |
133 | * @piolist: the PortioList associated with the io ports |
134 | * @start: the base I/O port against which the portio->offset is applied. |
135 | * @portio: the ports, sorted by offset. |
136 | * @opaque: passed into the portio callbacks. |
137 | * @name: passed into memory_region_init_io. |
138 | */ |
139 | void isa_register_portio_list(ISADevice *dev, |
140 | PortioList *piolist, |
141 | uint16_t start, |
142 | const MemoryRegionPortio *portio, |
143 | void *opaque, const char *name); |
144 | |
145 | static inline ISABus *isa_bus_from_device(ISADevice *d) |
146 | { |
147 | return ISA_BUS(qdev_get_parent_bus(DEVICE(d))); |
148 | } |
149 | |
150 | #endif |
151 | |