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 typedef struct ISADeviceClass ISADeviceClass; 15 DECLARE_OBJ_CHECKERS(ISADevice, ISADeviceClass, 16 ISA_DEVICE, TYPE_ISA_DEVICE) 17 18 #define TYPE_ISA_BUS "ISA" 19 DECLARE_INSTANCE_CHECKER(ISABus, ISA_BUS, 20 TYPE_ISA_BUS) 21 22 #define TYPE_APPLE_SMC "isa-applesmc" 23 #define APPLESMC_MAX_DATA_LENGTH 32 24 #define APPLESMC_PROP_IO_BASE "iobase" 25 26 static inline uint16_t applesmc_port(void) 27 { 28 Object *obj = object_resolve_path_type("", TYPE_APPLE_SMC, NULL); 29 30 if (obj) { 31 return object_property_get_uint(obj, APPLESMC_PROP_IO_BASE, NULL); 32 } 33 return 0; 34 } 35 36 #define TYPE_ISADMA "isa-dma" 37 38 typedef struct IsaDmaClass IsaDmaClass; 39 DECLARE_CLASS_CHECKERS(IsaDmaClass, ISADMA, 40 TYPE_ISADMA) 41 #define ISADMA(obj) \ 42 INTERFACE_CHECK(IsaDma, (obj), TYPE_ISADMA) 43 44 typedef enum { 45 ISADMA_TRANSFER_VERIFY, 46 ISADMA_TRANSFER_READ, 47 ISADMA_TRANSFER_WRITE, 48 ISADMA_TRANSFER_ILLEGAL, 49 } IsaDmaTransferMode; 50 51 typedef int (*IsaDmaTransferHandler)(void *opaque, int nchan, int pos, 52 int size); 53 54 struct IsaDmaClass { 55 InterfaceClass parent; 56 57 bool (*has_autoinitialization)(IsaDma *obj, int nchan); 58 int (*read_memory)(IsaDma *obj, int nchan, void *buf, int pos, int len); 59 int (*write_memory)(IsaDma *obj, int nchan, void *buf, int pos, int len); 60 void (*hold_DREQ)(IsaDma *obj, int nchan); 61 void (*release_DREQ)(IsaDma *obj, int nchan); 62 void (*schedule)(IsaDma *obj); 63 void (*register_channel)(IsaDma *obj, int nchan, 64 IsaDmaTransferHandler transfer_handler, 65 void *opaque); 66 }; 67 68 struct ISADeviceClass { 69 DeviceClass parent_class; 70 void (*build_aml)(ISADevice *dev, Aml *scope); 71 }; 72 73 struct ISABus { 74 /*< private >*/ 75 BusState parent_obj; 76 /*< public >*/ 77 78 MemoryRegion *address_space; 79 MemoryRegion *address_space_io; 80 qemu_irq *irqs; 81 IsaDma *dma[2]; 82 }; 83 84 struct ISADevice { 85 /*< private >*/ 86 DeviceState parent_obj; 87 /*< public >*/ 88 89 int8_t isairq[2]; /* -1 = unassigned */ 90 int nirqs; 91 int ioport_id; 92 }; 93 94 ISABus *isa_bus_new(DeviceState *dev, MemoryRegion *address_space, 95 MemoryRegion *address_space_io, Error **errp); 96 void isa_bus_irqs(ISABus *bus, qemu_irq *irqs); 97 qemu_irq isa_get_irq(ISADevice *dev, unsigned isairq); 98 void isa_init_irq(ISADevice *dev, qemu_irq *p, unsigned isairq); 99 void isa_connect_gpio_out(ISADevice *isadev, int gpioirq, unsigned isairq); 100 void isa_bus_dma(ISABus *bus, IsaDma *dma8, IsaDma *dma16); 101 IsaDma *isa_get_dma(ISABus *bus, int nchan); 102 MemoryRegion *isa_address_space(ISADevice *dev); 103 MemoryRegion *isa_address_space_io(ISADevice *dev); 104 ISADevice *isa_new(const char *name); 105 ISADevice *isa_try_new(const char *name); 106 bool isa_realize_and_unref(ISADevice *dev, ISABus *bus, Error **errp); 107 ISADevice *isa_create_simple(ISABus *bus, const char *name); 108 109 ISADevice *isa_vga_init(ISABus *bus); 110 void isa_build_aml(ISABus *bus, Aml *scope); 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 #define TYPE_PIIX4_PCI_DEVICE "piix4-isa" 151 152 #endif 153