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 bool (*has_autoinitialization)(IsaDma *obj, int nchan); 60 int (*read_memory)(IsaDma *obj, int nchan, void *buf, int pos, int len); 61 int (*write_memory)(IsaDma *obj, int nchan, void *buf, int pos, int len); 62 void (*hold_DREQ)(IsaDma *obj, int nchan); 63 void (*release_DREQ)(IsaDma *obj, int nchan); 64 void (*schedule)(IsaDma *obj); 65 void (*register_channel)(IsaDma *obj, int nchan, 66 IsaDmaTransferHandler transfer_handler, 67 void *opaque); 68 } IsaDmaClass; 69 70 typedef struct ISADeviceClass { 71 DeviceClass parent_class; 72 } ISADeviceClass; 73 74 struct ISABus { 75 /*< private >*/ 76 BusState parent_obj; 77 /*< public >*/ 78 79 MemoryRegion *address_space; 80 MemoryRegion *address_space_io; 81 qemu_irq *irqs; 82 IsaDma *dma[2]; 83 }; 84 85 struct ISADevice { 86 /*< private >*/ 87 DeviceState parent_obj; 88 /*< public >*/ 89 90 int8_t isairq[2]; /* -1 = unassigned */ 91 int nirqs; 92 int ioport_id; 93 }; 94 95 ISABus *isa_bus_new(DeviceState *dev, MemoryRegion *address_space, 96 MemoryRegion *address_space_io, Error **errp); 97 void isa_bus_irqs(ISABus *bus, qemu_irq *irqs); 98 qemu_irq isa_get_irq(ISADevice *dev, unsigned isairq); 99 void isa_init_irq(ISADevice *dev, qemu_irq *p, unsigned isairq); 100 void isa_connect_gpio_out(ISADevice *isadev, int gpioirq, unsigned isairq); 101 void isa_bus_dma(ISABus *bus, IsaDma *dma8, IsaDma *dma16); 102 IsaDma *isa_get_dma(ISABus *bus, int nchan); 103 MemoryRegion *isa_address_space(ISADevice *dev); 104 MemoryRegion *isa_address_space_io(ISADevice *dev); 105 ISADevice *isa_create(ISABus *bus, const char *name); 106 ISADevice *isa_try_create(ISABus *bus, const char *name); 107 ISADevice *isa_create_simple(ISABus *bus, const char *name); 108 109 ISADevice *isa_vga_init(ISABus *bus); 110 111 /** 112 * isa_register_ioport: Install an I/O port region on the ISA bus. 113 * 114 * Register an I/O port region via memory_region_add_subregion 115 * inside the ISA I/O address space. 116 * 117 * @dev: the ISADevice against which these are registered; may be NULL. 118 * @io: the #MemoryRegion being registered. 119 * @start: the base I/O port. 120 */ 121 void isa_register_ioport(ISADevice *dev, MemoryRegion *io, uint16_t start); 122 123 /** 124 * isa_register_portio_list: Initialize a set of ISA io ports 125 * 126 * Several ISA devices have many dis-joint I/O ports. Worse, these I/O 127 * ports can be interleaved with I/O ports from other devices. This 128 * function makes it easy to create multiple MemoryRegions for a single 129 * device and use the legacy portio routines. 130 * 131 * @dev: the ISADevice against which these are registered; may be NULL. 132 * @piolist: the PortioList associated with the io ports 133 * @start: the base I/O port against which the portio->offset is applied. 134 * @portio: the ports, sorted by offset. 135 * @opaque: passed into the portio callbacks. 136 * @name: passed into memory_region_init_io. 137 */ 138 void isa_register_portio_list(ISADevice *dev, 139 PortioList *piolist, 140 uint16_t start, 141 const MemoryRegionPortio *portio, 142 void *opaque, const char *name); 143 144 static inline ISABus *isa_bus_from_device(ISADevice *d) 145 { 146 return ISA_BUS(qdev_get_parent_bus(DEVICE(d))); 147 } 148 149 #define TYPE_PIIX4_PCI_DEVICE "piix4-isa" 150 151 #endif 152