| /* |
| * VIRTIO driver |
| * |
| * Copyright (c) 2016 Fabrice Bellard |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to deal |
| * in the Software without restriction, including without limitation the rights |
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| * copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| * THE SOFTWARE. |
| */ |
| #ifndef VIRTIO_H |
| #define VIRTIO_H |
| |
| #include <sys/select.h> |
| |
| #include "iomem.h" |
| #include "pci.h" |
| #include <sys/select.h> |
| |
| #define VIRTIO_PAGE_SIZE 4096 |
| |
| #if defined(EMSCRIPTEN) |
| #define VIRTIO_ADDR_BITS 32 |
| #else |
| #define VIRTIO_ADDR_BITS 64 |
| #endif |
| |
| #if VIRTIO_ADDR_BITS == 64 |
| typedef uint64_t virtio_phys_addr_t; |
| #else |
| typedef uint32_t virtio_phys_addr_t; |
| #endif |
| |
| typedef struct { |
| /* PCI only: */ |
| PCIBus *pci_bus; |
| /* MMIO only: */ |
| PhysMemoryMap *mem_map; |
| uint64_t addr; |
| IRQSignal *irq; |
| } VIRTIOBusDef; |
| |
| typedef struct VIRTIODevice VIRTIODevice; |
| |
| #define VIRTIO_DEBUG_IO (1 << 0) |
| #define VIRTIO_DEBUG_9P (1 << 1) |
| |
| void virtio_set_debug(VIRTIODevice *s, int debug_flags); |
| |
| /* block device */ |
| |
| typedef void BlockDeviceCompletionFunc(void *opaque, int ret); |
| |
| typedef struct BlockDevice BlockDevice; |
| |
| struct BlockDevice { |
| int64_t (*get_sector_count)(BlockDevice *bs); |
| int (*read_async)(BlockDevice *bs, |
| uint64_t sector_num, uint8_t *buf, int n, |
| BlockDeviceCompletionFunc *cb, void *opaque); |
| int (*write_async)(BlockDevice *bs, |
| uint64_t sector_num, const uint8_t *buf, int n, |
| BlockDeviceCompletionFunc *cb, void *opaque); |
| void *opaque; |
| }; |
| |
| VIRTIODevice *virtio_block_init(VIRTIOBusDef *bus, BlockDevice *bs); |
| |
| /* network device */ |
| |
| typedef struct EthernetDevice EthernetDevice; |
| |
| struct EthernetDevice { |
| uint8_t mac_addr[6]; /* mac address of the interface */ |
| void (*write_packet)(EthernetDevice *net, |
| const uint8_t *buf, int len); |
| void *opaque; |
| #if !defined(EMSCRIPTEN) |
| void (*select_fill)(EthernetDevice *net, int *pfd_max, |
| fd_set *rfds, fd_set *wfds, fd_set *efds, |
| int *pdelay); |
| void (*select_poll)(EthernetDevice *net, |
| fd_set *rfds, fd_set *wfds, fd_set *efds, |
| int select_ret); |
| #endif |
| /* the following is set by the device */ |
| void *device_opaque; |
| BOOL (*device_can_write_packet)(EthernetDevice *net); |
| void (*device_write_packet)(EthernetDevice *net, |
| const uint8_t *buf, int len); |
| void (*device_set_carrier)(EthernetDevice *net, BOOL carrier_state); |
| }; |
| |
| VIRTIODevice *virtio_net_init(VIRTIOBusDef *bus, EthernetDevice *es); |
| |
| /* console device */ |
| |
| typedef struct { |
| void *opaque; |
| void (*write_data)(void *opaque, const uint8_t *buf, int len); |
| int (*read_data)(void *opaque, uint8_t *buf, int len); |
| } CharacterDevice; |
| |
| VIRTIODevice *virtio_console_init(VIRTIOBusDef *bus, CharacterDevice *cs); |
| BOOL virtio_console_can_write_data(VIRTIODevice *s); |
| int virtio_console_get_write_len(VIRTIODevice *s); |
| int virtio_console_write_data(VIRTIODevice *s, const uint8_t *buf, int buf_len); |
| void virtio_console_resize_event(VIRTIODevice *s, int width, int height); |
| |
| /* input device */ |
| |
| typedef enum { |
| VIRTIO_INPUT_TYPE_KEYBOARD, |
| VIRTIO_INPUT_TYPE_MOUSE, |
| VIRTIO_INPUT_TYPE_TABLET, |
| } VirtioInputTypeEnum; |
| |
| #define VIRTIO_INPUT_ABS_SCALE 32768 |
| |
| int virtio_input_send_key_event(VIRTIODevice *s, BOOL is_down, |
| uint16_t key_code); |
| int virtio_input_send_mouse_event(VIRTIODevice *s, int dx, int dy, int dz, |
| unsigned int buttons); |
| |
| VIRTIODevice *virtio_input_init(VIRTIOBusDef *bus, VirtioInputTypeEnum type); |
| |
| /* 9p filesystem device */ |
| |
| #include "fs.h" |
| |
| VIRTIODevice *virtio_9p_init(VIRTIOBusDef *bus, FSDevice *fs, |
| const char *mount_tag); |
| |
| #endif /* VIRTIO_H */ |