1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2024 Arm Ltd 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include <sys/types.h> 29 #include <sys/systm.h> 30 31 #include <machine/ifunc.h> 32 33 #include "arm64.h" 34 #include "vmm_handlers.h" 35 36 /* Read an EL2 register */ 37 static uint64_t 38 vmm_nvhe_read_reg(uint64_t reg) 39 { 40 return (vmm_call_hyp(HYP_READ_REGISTER, reg)); 41 } 42 43 DEFINE_IFUNC(, uint64_t, vmm_read_reg, (uint64_t reg)) 44 { 45 if (in_vhe()) 46 return (vmm_vhe_read_reg); 47 return (vmm_nvhe_read_reg); 48 } 49 50 /* Enter the guest */ 51 static uint64_t 52 vmm_nvhe_enter_guest(struct hyp *hyp, struct hypctx *hypctx) 53 { 54 return (vmm_call_hyp(HYP_ENTER_GUEST, hyp->el2_addr, hypctx->el2_addr)); 55 } 56 57 DEFINE_IFUNC(, uint64_t, vmm_enter_guest, 58 (struct hyp *hyp, struct hypctx *hypctx)) 59 { 60 if (in_vhe()) 61 return (vmm_vhe_enter_guest); 62 return (vmm_nvhe_enter_guest); 63 } 64 65 /* Clean the TLB for all guests */ 66 static void 67 vmm_nvhe_clean_s2_tlbi(void) 68 { 69 vmm_call_hyp(HYP_CLEAN_S2_TLBI); 70 } 71 72 DEFINE_IFUNC(, void, vmm_clean_s2_tlbi, (void)) 73 { 74 if (in_vhe()) 75 return (vmm_vhe_clean_s2_tlbi); 76 return (vmm_nvhe_clean_s2_tlbi); 77 } 78 79 /* 80 * Switch to a guest vttbr and clean the TLB for a range of guest 81 * virtual address space. 82 */ 83 static void 84 vmm_nvhe_s2_tlbi_range(uint64_t vttbr, vm_offset_t sva, vm_offset_t eva, 85 bool final_only) 86 { 87 vmm_call_hyp(HYP_S2_TLBI_RANGE, vttbr, sva, eva, final_only); 88 } 89 90 DEFINE_IFUNC(, void, vmm_s2_tlbi_range, 91 (uint64_t vttbr, vm_offset_t sva, vm_offset_t eva, bool final_only)) 92 { 93 if (in_vhe()) 94 return (vmm_vhe_s2_tlbi_range); 95 return (vmm_nvhe_s2_tlbi_range); 96 } 97 98 /* 99 * Switch to a guest vttbr and clean the TLB for all the guest 100 * virtual address space. 101 */ 102 static void 103 vmm_nvhe_s2_tlbi_all(uint64_t vttbr) 104 { 105 vmm_call_hyp(HYP_S2_TLBI_ALL, vttbr); 106 } 107 108 DEFINE_IFUNC(, void, vmm_s2_tlbi_all, (uint64_t vttbr)) 109 { 110 if (in_vhe()) 111 return (vmm_vhe_s2_tlbi_all); 112 return (vmm_nvhe_s2_tlbi_all); 113 } 114