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 #if defined(__Fuchsia__) 12 typedef void* address_space_handle_t; 13 #else 14 typedef int address_space_handle_t; 15 #endif 16 17 enum AddressSpaceSubdeviceType { 18 NoSubdevice = -1, 19 Graphics = 0, 20 Media = 1, 21 HostMemoryAllocator = 5, 22 SharedSlotsHostMemoryAllocator = 6, 23 VirtioGpuGraphics = 10, 24 }; 25 26 // We also expose the ping info struct that is shared between host and guest. 27 struct address_space_ping { 28 uint64_t offset; 29 uint64_t size; 30 uint64_t metadata; 31 uint32_t resourceId; 32 uint32_t wait_fd; 33 uint32_t wait_flags; 34 uint32_t direction; 35 }; 36 37 // typedef/struct to abstract over goldfish vs virtio-gpu implementations 38 typedef address_space_handle_t (*address_space_open_t)(void); 39 typedef void (*address_space_close_t)(address_space_handle_t); 40 41 typedef bool (*address_space_allocate_t)( 42 address_space_handle_t, size_t size, uint64_t* phys_addr, uint64_t* offset); 43 typedef bool (*address_space_free_t)( 44 address_space_handle_t, uint64_t offset); 45 46 typedef bool (*address_space_claim_shared_t)( 47 address_space_handle_t, uint64_t offset, uint64_t size); 48 typedef bool (*address_space_unclaim_shared_t)( 49 address_space_handle_t, uint64_t offset); 50 51 // pgoff is the offset into the page to return in the result 52 typedef void* (*address_space_map_t)( 53 address_space_handle_t, uint64_t offset, uint64_t size, uint64_t pgoff); 54 typedef void (*address_space_unmap_t)(void* ptr, uint64_t size); 55 56 typedef bool (*address_space_set_subdevice_type_t)( 57 address_space_handle_t, AddressSpaceSubdeviceType type, address_space_handle_t*); 58 typedef bool (*address_space_ping_t)( 59 address_space_handle_t, struct address_space_ping*); 60 61 struct address_space_ops { 62 address_space_open_t open; 63 address_space_close_t close; 64 address_space_claim_shared_t claim_shared; 65 address_space_unclaim_shared_t unclaim_shared; 66 address_space_map_t map; 67 address_space_unmap_t unmap; 68 address_space_set_subdevice_type_t set_subdevice_type; 69 address_space_ping_t ping; 70 }; 71