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 #include "qom/object.h" 10 11 #define ISA_NUM_IRQS 16 12 13 #define TYPE_ISA_DEVICE "isa-device" 14 OBJECT_DECLARE_TYPE(ISADevice, ISADeviceClass, ISA_DEVICE) 15 16 #define TYPE_ISA_BUS "ISA" 17 DECLARE_INSTANCE_CHECKER(ISABus, ISA_BUS, 18 TYPE_ISA_BUS) 19 20 #define TYPE_APPLE_SMC "isa-applesmc" 21 #define APPLESMC_MAX_DATA_LENGTH 32 22 #define APPLESMC_PROP_IO_BASE "iobase" 23 24 static inline uint16_t applesmc_port(void) 25 { 26 Object *obj = object_resolve_path_type("", TYPE_APPLE_SMC, NULL); 27 28 if (obj) { 29 return object_property_get_uint(obj, APPLESMC_PROP_IO_BASE, NULL); 30 } 31 return 0; 32 } 33 34 #define TYPE_ISADMA "isa-dma" 35 36 typedef struct IsaDmaClass IsaDmaClass; 37 DECLARE_CLASS_CHECKERS(IsaDmaClass, ISADMA, 38 TYPE_ISADMA) 39 #define ISADMA(obj) \ 40 INTERFACE_CHECK(IsaDma, (obj), TYPE_ISADMA) 41 42 typedef enum { 43 ISADMA_TRANSFER_VERIFY, 44 ISADMA_TRANSFER_READ, 45 ISADMA_TRANSFER_WRITE, 46 ISADMA_TRANSFER_ILLEGAL, 47 } IsaDmaTransferMode; 48 49 typedef int (*IsaDmaTransferHandler)(void *opaque, int nchan, int pos, 50 int size); 51 52 struct IsaDmaClass { 53 InterfaceClass parent; 54 55 bool (*has_autoinitialization)(IsaDma *obj, int nchan); 56 int (*read_memory)(IsaDma *obj, int nchan, void *buf, int pos, int len); 57 int (*write_memory)(IsaDma *obj, int nchan, void *buf, int pos, int len); 58 void (*hold_DREQ)(IsaDma *obj, int nchan); 59 void (*release_DREQ)(IsaDma *obj, int nchan); 60 void (*schedule)(IsaDma *obj); 61 void (*register_channel)(IsaDma *obj, int nchan, 62 IsaDmaTransferHandler transfer_handler, 63 void *opaque); 64 }; 65 66 struct ISADeviceClass { 67 DeviceClass parent_class; 68 void (*build_aml)(ISADevice *dev, Aml *scope); 69 }; 70 71 struct ISABus { 72 /*< private >*/ 73 BusState parent_obj; 74 /*< public >*/ 75 76 MemoryRegion *address_space; 77 MemoryRegion *address_space_io; 78 qemu_irq *irqs; 79 IsaDma *dma[2]; 80 }; 81 82 struct ISADevice { 83 /*< private >*/ 84 DeviceState parent_obj; 85 /*< public >*/ 86 87 int8_t isairq[2]; /* -1 = unassigned */ 88 int nirqs; 89 int ioport_id; 90 }; 91 92 ISABus *isa_bus_new(DeviceState *dev, MemoryRegion *address_space, 93 MemoryRegion *address_space_io, Error **errp); 94 void isa_bus_irqs(ISABus *bus, qemu_irq *irqs); 95 qemu_irq isa_get_irq(ISADevice *dev, unsigned isairq); 96 void isa_init_irq(ISADevice *dev, qemu_irq *p, unsigned isairq); 97 void isa_connect_gpio_out(ISADevice *isadev, int gpioirq, unsigned isairq); 98 void isa_bus_dma(ISABus *bus, IsaDma *dma8, IsaDma *dma16); 99 IsaDma *isa_get_dma(ISABus *bus, int nchan); 100 MemoryRegion *isa_address_space(ISADevice *dev); 101 MemoryRegion *isa_address_space_io(ISADevice *dev); 102 ISADevice *isa_new(const char *name); 103 ISADevice *isa_try_new(const char *name); 104 bool isa_realize_and_unref(ISADevice *dev, ISABus *bus, Error **errp); 105 ISADevice *isa_create_simple(ISABus *bus, const char *name); 106 107 ISADevice *isa_vga_init(ISABus *bus); 108 void isa_build_aml(ISABus *bus, Aml *scope); 109 110 /** 111 * isa_register_ioport: Install an I/O port region on the ISA bus. 112 * 113 * Register an I/O port region via memory_region_add_subregion 114 * inside the ISA I/O address space. 115 * 116 * @dev: the ISADevice against which these are registered; may be NULL. 117 * @io: the #MemoryRegion being registered. 118 * @start: the base I/O port. 119 */ 120 void isa_register_ioport(ISADevice *dev, MemoryRegion *io, uint16_t start); 121 122 /** 123 * isa_register_portio_list: Initialize a set of ISA io ports 124 * 125 * Several ISA devices have many dis-joint I/O ports. Worse, these I/O 126 * ports can be interleaved with I/O ports from other devices. This 127 * function makes it easy to create multiple MemoryRegions for a single 128 * device and use the legacy portio routines. 129 * 130 * @dev: the ISADevice against which these are registered; may be NULL. 131 * @piolist: the PortioList associated with the io ports 132 * @start: the base I/O port against which the portio->offset is applied. 133 * @portio: the ports, sorted by offset. 134 * @opaque: passed into the portio callbacks. 135 * @name: passed into memory_region_init_io. 136 */ 137 void isa_register_portio_list(ISADevice *dev, 138 PortioList *piolist, 139 uint16_t start, 140 const MemoryRegionPortio *portio, 141 void *opaque, const char *name); 142 143 static inline ISABus *isa_bus_from_device(ISADevice *d) 144 { 145 return ISA_BUS(qdev_get_parent_bus(DEVICE(d))); 146 } 147 148 #define TYPE_PIIX4_PCI_DEVICE "piix4-isa" 149 150 #endif 151