1aa8794b1SJanosch Frank /* SPDX-License-Identifier: GPL-2.0-only */ 2aa8794b1SJanosch Frank /* 3aa8794b1SJanosch Frank * Ultravisor related functionality 4aa8794b1SJanosch Frank * 5aa8794b1SJanosch Frank * Copyright 2020 IBM Corp. 6aa8794b1SJanosch Frank * 7aa8794b1SJanosch Frank * Authors: 8aa8794b1SJanosch Frank * Janosch Frank <frankja@linux.ibm.com> 9aa8794b1SJanosch Frank */ 1007ac63dcSJanosch Frank #include <libcflat.h> 1107ac63dcSJanosch Frank #include <bitops.h> 1207ac63dcSJanosch Frank #include <alloc.h> 1307ac63dcSJanosch Frank #include <alloc_page.h> 1407ac63dcSJanosch Frank #include <asm/page.h> 1507ac63dcSJanosch Frank #include <asm/arch_def.h> 1607ac63dcSJanosch Frank 1707ac63dcSJanosch Frank #include <asm/facility.h> 1807ac63dcSJanosch Frank #include <asm/uv.h> 1907ac63dcSJanosch Frank #include <uv.h> 20f4f97af0SJanosch Frank #include <sie.h> 2107ac63dcSJanosch Frank 2207ac63dcSJanosch Frank static struct uv_cb_qui uvcb_qui = { 2307ac63dcSJanosch Frank .header.cmd = UVC_CMD_QUI, 2407ac63dcSJanosch Frank .header.len = sizeof(uvcb_qui), 2507ac63dcSJanosch Frank }; 26f4f97af0SJanosch Frank static uint64_t uv_init_mem; 27f4f97af0SJanosch Frank 2807ac63dcSJanosch Frank 2907ac63dcSJanosch Frank bool uv_os_is_guest(void) 3007ac63dcSJanosch Frank { 3107ac63dcSJanosch Frank return test_facility(158) && 3207ac63dcSJanosch Frank uv_query_test_call(BIT_UVC_CMD_SET_SHARED_ACCESS) && 3307ac63dcSJanosch Frank uv_query_test_call(BIT_UVC_CMD_REMOVE_SHARED_ACCESS); 3407ac63dcSJanosch Frank } 3507ac63dcSJanosch Frank 3607ac63dcSJanosch Frank bool uv_os_is_host(void) 3707ac63dcSJanosch Frank { 3807ac63dcSJanosch Frank return test_facility(158) && uv_query_test_call(BIT_UVC_CMD_INIT_UV); 3907ac63dcSJanosch Frank } 4007ac63dcSJanosch Frank 4107ac63dcSJanosch Frank bool uv_query_test_call(unsigned int nr) 4207ac63dcSJanosch Frank { 4307ac63dcSJanosch Frank /* Query needs to be called first */ 4407ac63dcSJanosch Frank assert(uvcb_qui.header.rc); 4507ac63dcSJanosch Frank assert(nr < BITS_PER_LONG * ARRAY_SIZE(uvcb_qui.inst_calls_list)); 4607ac63dcSJanosch Frank 4707ac63dcSJanosch Frank return test_bit_inv(nr, uvcb_qui.inst_calls_list); 4807ac63dcSJanosch Frank } 4907ac63dcSJanosch Frank 50*26184212SSteffen Eiden const struct uv_cb_qui *uv_get_query_data(void) 51*26184212SSteffen Eiden { 52*26184212SSteffen Eiden /* Query needs to be called first */ 53*26184212SSteffen Eiden assert(uvcb_qui.header.rc == 1 || uvcb_qui.header.rc == 0x100); 54*26184212SSteffen Eiden 55*26184212SSteffen Eiden return &uvcb_qui; 56*26184212SSteffen Eiden } 57*26184212SSteffen Eiden 5807ac63dcSJanosch Frank int uv_setup(void) 5907ac63dcSJanosch Frank { 6007ac63dcSJanosch Frank if (!test_facility(158)) 6107ac63dcSJanosch Frank return 0; 6207ac63dcSJanosch Frank 6378168306SJanosch Frank uv_call(0, (u64)&uvcb_qui); 6478168306SJanosch Frank 6578168306SJanosch Frank assert(uvcb_qui.header.rc == 1 || uvcb_qui.header.rc == 0x100); 6607ac63dcSJanosch Frank return 1; 6707ac63dcSJanosch Frank } 68f4f97af0SJanosch Frank 69f4f97af0SJanosch Frank void uv_init(void) 70f4f97af0SJanosch Frank { 71f4f97af0SJanosch Frank struct uv_cb_init uvcb_init = { 72f4f97af0SJanosch Frank .header.len = sizeof(uvcb_init), 73f4f97af0SJanosch Frank .header.cmd = UVC_CMD_INIT_UV, 74f4f97af0SJanosch Frank }; 75f4f97af0SJanosch Frank static bool initialized; 76f4f97af0SJanosch Frank int cc; 77f4f97af0SJanosch Frank 78f4f97af0SJanosch Frank /* Let's not do this twice */ 79f4f97af0SJanosch Frank assert(!initialized); 80f4f97af0SJanosch Frank /* Query is done on initialization but let's check anyway */ 81f4f97af0SJanosch Frank assert(uvcb_qui.header.rc == 1 || uvcb_qui.header.rc == 0x100); 82f4f97af0SJanosch Frank 83f4f97af0SJanosch Frank /* Donated storage needs to be over 2GB aligned to 1MB */ 84f4f97af0SJanosch Frank uv_init_mem = (uint64_t)memalign_pages_flags(HPAGE_SIZE, uvcb_qui.uv_base_stor_len, AREA_NORMAL); 85f4f97af0SJanosch Frank uvcb_init.stor_origin = uv_init_mem; 86f4f97af0SJanosch Frank uvcb_init.stor_len = uvcb_qui.uv_base_stor_len; 87f4f97af0SJanosch Frank 88f4f97af0SJanosch Frank cc = uv_call(0, (uint64_t)&uvcb_init); 89f4f97af0SJanosch Frank assert(cc == 0); 90f4f97af0SJanosch Frank initialized = true; 91f4f97af0SJanosch Frank } 92f4f97af0SJanosch Frank 93f4f97af0SJanosch Frank void uv_create_guest(struct vm *vm) 94f4f97af0SJanosch Frank { 95f4f97af0SJanosch Frank struct uv_cb_cgc uvcb_cgc = { 96f4f97af0SJanosch Frank .header.cmd = UVC_CMD_CREATE_SEC_CONF, 97f4f97af0SJanosch Frank .header.len = sizeof(uvcb_cgc), 98f4f97af0SJanosch Frank }; 99f4f97af0SJanosch Frank struct uv_cb_csc uvcb_csc = { 100f4f97af0SJanosch Frank .header.len = sizeof(uvcb_csc), 101f4f97af0SJanosch Frank .header.cmd = UVC_CMD_CREATE_SEC_CPU, 102f4f97af0SJanosch Frank .state_origin = (uint64_t)vm->sblk, 103f4f97af0SJanosch Frank .num = 0, 104f4f97af0SJanosch Frank }; 105f4f97af0SJanosch Frank unsigned long vsize; 106f4f97af0SJanosch Frank int cc; 107f4f97af0SJanosch Frank 108f4f97af0SJanosch Frank uvcb_cgc.guest_stor_origin = vm->sblk->mso; 109f4f97af0SJanosch Frank uvcb_cgc.guest_stor_len = vm->sblk->msl; 110f4f97af0SJanosch Frank 111f4f97af0SJanosch Frank /* Config allocation */ 112f4f97af0SJanosch Frank vsize = uvcb_qui.conf_base_virt_stor_len + 113f4f97af0SJanosch Frank ((uvcb_cgc.guest_stor_len / HPAGE_SIZE) * uvcb_qui.conf_virt_var_stor_len); 114f4f97af0SJanosch Frank 115f4f97af0SJanosch Frank vm->uv.conf_base_stor = memalign_pages_flags(PAGE_SIZE * 4, uvcb_qui.conf_base_phys_stor_len, 0); 116f4f97af0SJanosch Frank /* 117f4f97af0SJanosch Frank * This allocation needs to be below the max guest storage 118f4f97af0SJanosch Frank * address so let's simply put it into the physical memory 119f4f97af0SJanosch Frank */ 120f4f97af0SJanosch Frank vm->uv.conf_var_stor = memalign_pages_flags(PAGE_SIZE, vsize,0); 121f4f97af0SJanosch Frank uvcb_cgc.conf_base_stor_origin = (uint64_t)vm->uv.conf_base_stor; 122f4f97af0SJanosch Frank uvcb_cgc.conf_var_stor_origin = (uint64_t)vm->uv.conf_var_stor; 123f4f97af0SJanosch Frank 124f4f97af0SJanosch Frank /* CPU allocation */ 125f4f97af0SJanosch Frank vm->uv.cpu_stor = memalign_pages_flags(PAGE_SIZE, uvcb_qui.cpu_stor_len, 0); 126f4f97af0SJanosch Frank uvcb_csc.stor_origin = (uint64_t)vm->uv.cpu_stor; 127f4f97af0SJanosch Frank 128f4f97af0SJanosch Frank uvcb_cgc.guest_asce = (uint64_t)stctg(1); 129f4f97af0SJanosch Frank uvcb_cgc.guest_sca = (uint64_t)vm->sca; 130f4f97af0SJanosch Frank 131f4f97af0SJanosch Frank cc = uv_call(0, (uint64_t)&uvcb_cgc); 132f4f97af0SJanosch Frank assert(!cc); 133f4f97af0SJanosch Frank 134f4f97af0SJanosch Frank vm->uv.vm_handle = uvcb_cgc.guest_handle; 135f4f97af0SJanosch Frank uvcb_csc.guest_handle = uvcb_cgc.guest_handle; 136f4f97af0SJanosch Frank cc = uv_call(0, (uint64_t)&uvcb_csc); 137f4f97af0SJanosch Frank vm->uv.vcpu_handle = uvcb_csc.cpu_handle; 138f4f97af0SJanosch Frank assert(!cc); 139f4f97af0SJanosch Frank 140f4f97af0SJanosch Frank /* 141f4f97af0SJanosch Frank * Convert guest to format 4: 142f4f97af0SJanosch Frank * 143f4f97af0SJanosch Frank * - Set format 4 144f4f97af0SJanosch Frank * - Write UV handles into sblk 145f4f97af0SJanosch Frank * - Allocate and set SIDA 146f4f97af0SJanosch Frank */ 147f4f97af0SJanosch Frank vm->sblk->sdf = 2; 148f4f97af0SJanosch Frank vm->sblk->sidad = (uint64_t)alloc_page(); 149f4f97af0SJanosch Frank vm->sblk->pv_handle_cpu = uvcb_csc.cpu_handle; 150f4f97af0SJanosch Frank vm->sblk->pv_handle_config = uvcb_cgc.guest_handle; 151f4f97af0SJanosch Frank } 152f4f97af0SJanosch Frank 153f4f97af0SJanosch Frank void uv_destroy_guest(struct vm *vm) 154f4f97af0SJanosch Frank { 155f4f97af0SJanosch Frank int cc; 156f4f97af0SJanosch Frank u16 rc, rrc; 157f4f97af0SJanosch Frank 158f4f97af0SJanosch Frank cc = uv_cmd_nodata(vm->sblk->pv_handle_cpu, 159f4f97af0SJanosch Frank UVC_CMD_DESTROY_SEC_CPU, &rc, &rrc); 160f4f97af0SJanosch Frank assert(cc == 0); 161f4f97af0SJanosch Frank free_page((void *)vm->sblk->sidad); 162f4f97af0SJanosch Frank free_pages(vm->uv.cpu_stor); 163f4f97af0SJanosch Frank 164f4f97af0SJanosch Frank cc = uv_cmd_nodata(vm->sblk->pv_handle_config, 165f4f97af0SJanosch Frank UVC_CMD_DESTROY_SEC_CONF, &rc, &rrc); 166f4f97af0SJanosch Frank assert(cc == 0); 167f4f97af0SJanosch Frank free_pages(vm->uv.conf_base_stor); 168f4f97af0SJanosch Frank free_pages(vm->uv.conf_var_stor); 169f4f97af0SJanosch Frank } 170f4f97af0SJanosch Frank 171f4f97af0SJanosch Frank int uv_unpack(struct vm *vm, uint64_t addr, uint64_t len, uint64_t tweak) 172f4f97af0SJanosch Frank { 173f4f97af0SJanosch Frank int i, cc; 174f4f97af0SJanosch Frank 175f4f97af0SJanosch Frank for (i = 0; i < len / PAGE_SIZE; i++) { 176f4f97af0SJanosch Frank cc = uv_unp_page(vm->uv.vm_handle, addr, tweak, i * PAGE_SIZE); 177f4f97af0SJanosch Frank assert(!cc); 178f4f97af0SJanosch Frank addr += PAGE_SIZE; 179f4f97af0SJanosch Frank } 180f4f97af0SJanosch Frank return cc; 181f4f97af0SJanosch Frank } 182f4f97af0SJanosch Frank 183f4f97af0SJanosch Frank void uv_verify_load(struct vm *vm) 184f4f97af0SJanosch Frank { 185f4f97af0SJanosch Frank uint16_t rc, rrc; 186f4f97af0SJanosch Frank int cc; 187f4f97af0SJanosch Frank 188f4f97af0SJanosch Frank cc = uv_cmd_nodata(vm->uv.vm_handle, UVC_CMD_VERIFY_IMG, &rc, &rrc); 189f4f97af0SJanosch Frank assert(!cc); 190f4f97af0SJanosch Frank cc = uv_set_cpu_state(vm->uv.vcpu_handle, PV_CPU_STATE_OPR_LOAD); 191f4f97af0SJanosch Frank assert(!cc); 192f4f97af0SJanosch Frank } 193