1 // SPDX-License-Identifier: GPL-2.0 OR MIT 2 /* 3 * Copyright 2021 VMware, Inc., Palo Alto, CA., USA 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining a 6 * copy of this software and associated documentation files (the 7 * "Software"), to deal in the Software without restriction, including 8 * without limitation the rights to use, copy, modify, merge, publish, 9 * distribute, sub license, and/or sell copies of the Software, and to 10 * permit persons to whom the Software is furnished to do so, subject to 11 * the following conditions: 12 * 13 * The above copyright notice and this permission notice (including the 14 * next paragraph) shall be included in all copies or substantial portions 15 * of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 20 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, 21 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 22 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 23 * USE OR OTHER DEALINGS IN THE SOFTWARE. 24 * 25 */ 26 #ifndef _VMWGFX_MSG_ARM64_H 27 #define _VMWGFX_MSG_ARM64_H 28 29 #if defined(__aarch64__) 30 31 #define VMWARE_HYPERVISOR_PORT 0x5658 32 #define VMWARE_HYPERVISOR_PORT_HB 0x5659 33 34 #define VMWARE_HYPERVISOR_HB BIT(0) 35 #define VMWARE_HYPERVISOR_OUT BIT(1) 36 37 #define X86_IO_MAGIC 0x86 38 39 #define X86_IO_W7_SIZE_SHIFT 0 40 #define X86_IO_W7_SIZE_MASK (0x3 << X86_IO_W7_SIZE_SHIFT) 41 #define X86_IO_W7_DIR (1 << 2) 42 #define X86_IO_W7_WITH (1 << 3) 43 #define X86_IO_W7_STR (1 << 4) 44 #define X86_IO_W7_DF (1 << 5) 45 #define X86_IO_W7_IMM_SHIFT 5 46 #define X86_IO_W7_IMM_MASK (0xff << X86_IO_W7_IMM_SHIFT) 47 48 static inline void vmw_port(unsigned long cmd, unsigned long in_ebx, 49 unsigned long in_si, unsigned long in_di, 50 unsigned long flags, unsigned long magic, 51 unsigned long *eax, unsigned long *ebx, 52 unsigned long *ecx, unsigned long *edx, 53 unsigned long *si, unsigned long *di) 54 { 55 register u64 x0 asm("x0") = magic; 56 register u64 x1 asm("x1") = in_ebx; 57 register u64 x2 asm("x2") = cmd; 58 register u64 x3 asm("x3") = flags | VMWARE_HYPERVISOR_PORT; 59 register u64 x4 asm("x4") = in_si; 60 register u64 x5 asm("x5") = in_di; 61 62 register u64 x7 asm("x7") = ((u64)X86_IO_MAGIC << 32) | 63 X86_IO_W7_WITH | 64 X86_IO_W7_DIR | 65 (2 << X86_IO_W7_SIZE_SHIFT); 66 67 asm volatile("mrs xzr, mdccsr_el0 \n\t" 68 : "+r"(x0), "+r"(x1), "+r"(x2), 69 "+r"(x3), "+r"(x4), "+r"(x5) 70 : "r"(x7) 71 :); 72 *eax = x0; 73 *ebx = x1; 74 *ecx = x2; 75 *edx = x3; 76 *si = x4; 77 *di = x5; 78 } 79 80 static inline void vmw_port_hb(unsigned long cmd, unsigned long in_ecx, 81 unsigned long in_si, unsigned long in_di, 82 unsigned long flags, unsigned long magic, 83 unsigned long bp, u32 w7dir, 84 unsigned long *eax, unsigned long *ebx, 85 unsigned long *ecx, unsigned long *edx, 86 unsigned long *si, unsigned long *di) 87 { 88 register u64 x0 asm("x0") = magic; 89 register u64 x1 asm("x1") = cmd; 90 register u64 x2 asm("x2") = in_ecx; 91 register u64 x3 asm("x3") = flags | VMWARE_HYPERVISOR_PORT_HB; 92 register u64 x4 asm("x4") = in_si; 93 register u64 x5 asm("x5") = in_di; 94 register u64 x6 asm("x6") = bp; 95 register u64 x7 asm("x7") = ((u64)X86_IO_MAGIC << 32) | 96 X86_IO_W7_STR | 97 X86_IO_W7_WITH | 98 w7dir; 99 100 asm volatile("mrs xzr, mdccsr_el0 \n\t" 101 : "+r"(x0), "+r"(x1), "+r"(x2), 102 "+r"(x3), "+r"(x4), "+r"(x5) 103 : "r"(x6), "r"(x7) 104 :); 105 *eax = x0; 106 *ebx = x1; 107 *ecx = x2; 108 *edx = x3; 109 *si = x4; 110 *di = x5; 111 } 112 113 #define VMW_PORT(cmd, in_ebx, in_si, in_di, flags, magic, eax, ebx, ecx, edx, \ 114 si, di) \ 115 vmw_port(cmd, in_ebx, in_si, in_di, flags, magic, &eax, &ebx, &ecx, \ 116 &edx, &si, &di) 117 118 #define VMW_PORT_HB_OUT(cmd, in_ecx, in_si, in_di, flags, magic, bp, eax, ebx, \ 119 ecx, edx, si, di) \ 120 vmw_port_hb(cmd, in_ecx, in_si, in_di, flags, magic, bp, \ 121 0, &eax, &ebx, &ecx, &edx, &si, &di) 122 123 #define VMW_PORT_HB_IN(cmd, in_ecx, in_si, in_di, flags, magic, bp, eax, ebx, \ 124 ecx, edx, si, di) \ 125 vmw_port_hb(cmd, in_ecx, in_si, in_di, flags, magic, bp, \ 126 X86_IO_W7_DIR, &eax, &ebx, &ecx, &edx, &si, &di) 127 128 #endif 129 130 #endif /* _VMWGFX_MSG_ARM64_H */ 131