1 /* 2 * Copyright 2023 Google 3 * SPDX-License-Identifier: MIT 4 */ 5 6 #pragma once 7 8 #include <inttypes.h> 9 #include <stddef.h> 10 11 typedef int address_space_handle_t; 12 13 enum AddressSpaceSubdeviceType { 14 NoSubdevice = -1, 15 Graphics = 0, 16 Media = 1, 17 HostMemoryAllocator = 5, 18 SharedSlotsHostMemoryAllocator = 6, 19 VirtioGpuGraphics = 10, 20 }; 21 22 // We also expose the ping info struct that is shared between host and guest. 23 struct address_space_ping { 24 uint64_t offset; 25 uint64_t size; 26 uint64_t metadata; 27 uint32_t resourceId; 28 uint32_t wait_fd; 29 uint32_t wait_flags; 30 uint32_t direction; 31 }; 32 33 // typedef/struct to abstract over goldfish vs virtio-gpu implementations 34 typedef address_space_handle_t (*address_space_open_t)(void); 35 typedef void (*address_space_close_t)(address_space_handle_t); 36 37 typedef bool (*address_space_allocate_t)( 38 address_space_handle_t, size_t size, uint64_t* phys_addr, uint64_t* offset); 39 typedef bool (*address_space_free_t)( 40 address_space_handle_t, uint64_t offset); 41 42 typedef bool (*address_space_claim_shared_t)( 43 address_space_handle_t, uint64_t offset, uint64_t size); 44 typedef bool (*address_space_unclaim_shared_t)( 45 address_space_handle_t, uint64_t offset); 46 47 // pgoff is the offset into the page to return in the result 48 typedef void* (*address_space_map_t)( 49 address_space_handle_t, uint64_t offset, uint64_t size, uint64_t pgoff); 50 typedef void (*address_space_unmap_t)(void* ptr, uint64_t size); 51 52 typedef bool (*address_space_set_subdevice_type_t)( 53 address_space_handle_t, AddressSpaceSubdeviceType type, address_space_handle_t*); 54 typedef bool (*address_space_ping_t)( 55 address_space_handle_t, struct address_space_ping*); 56 57 struct address_space_ops { 58 address_space_open_t open; 59 address_space_close_t close; 60 address_space_claim_shared_t claim_shared; 61 address_space_unclaim_shared_t unclaim_shared; 62 address_space_map_t map; 63 address_space_unmap_t unmap; 64 address_space_set_subdevice_type_t set_subdevice_type; 65 address_space_ping_t ping; 66 }; 67