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