302 lines
8.4 KiB
C
302 lines
8.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright IBM Corp. 2024
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*
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* Authors:
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* Hariharan Mari <hari55@linux.ibm.com>
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*
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* The tests compare the result of the KVM ioctl for obtaining CPU subfunction data with those
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* from an ASM block performing the same CPU subfunction. Currently KVM doesn't mask instruction
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* query data reported via the CPU Model, allowing us to directly compare it with the data
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* acquired through executing the queries in the test.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/ioctl.h>
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#include "facility.h"
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#include "kvm_util.h"
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#define PLO_FUNCTION_MAX 256
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/* Query available CPU subfunctions */
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struct kvm_s390_vm_cpu_subfunc cpu_subfunc;
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static void get_cpu_machine_subfuntions(struct kvm_vm *vm,
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struct kvm_s390_vm_cpu_subfunc *cpu_subfunc)
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{
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int r;
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r = __kvm_device_attr_get(vm->fd, KVM_S390_VM_CPU_MODEL,
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KVM_S390_VM_CPU_MACHINE_SUBFUNC, cpu_subfunc);
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TEST_ASSERT(!r, "Get cpu subfunctions failed r=%d errno=%d", r, errno);
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}
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static inline int plo_test_bit(unsigned char nr)
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{
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unsigned long function = nr | 0x100;
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int cc;
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asm volatile(" lgr 0,%[function]\n"
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/* Parameter registers are ignored for "test bit" */
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" plo 0,0,0,0(0)\n"
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" ipm %0\n"
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" srl %0,28\n"
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: "=d" (cc)
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: [function] "d" (function)
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: "cc", "0");
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return cc == 0;
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}
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/* Testing Perform Locked Operation (PLO) CPU subfunction's ASM block */
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static void test_plo_asm_block(u8 (*query)[32])
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{
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for (int i = 0; i < PLO_FUNCTION_MAX; ++i) {
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if (plo_test_bit(i))
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(*query)[i >> 3] |= 0x80 >> (i & 7);
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}
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}
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/* Testing Crypto Compute Message Authentication Code (KMAC) CPU subfunction's ASM block */
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static void test_kmac_asm_block(u8 (*query)[16])
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{
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asm volatile(" la %%r1,%[query]\n"
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" xgr %%r0,%%r0\n"
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" .insn rre,0xb91e0000,0,2\n"
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: [query] "=R" (*query)
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:
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: "cc", "r0", "r1");
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}
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/* Testing Crypto Cipher Message with Chaining (KMC) CPU subfunction's ASM block */
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static void test_kmc_asm_block(u8 (*query)[16])
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{
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asm volatile(" la %%r1,%[query]\n"
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" xgr %%r0,%%r0\n"
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" .insn rre,0xb92f0000,2,4\n"
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: [query] "=R" (*query)
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:
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: "cc", "r0", "r1");
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}
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/* Testing Crypto Cipher Message (KM) CPU subfunction's ASM block */
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static void test_km_asm_block(u8 (*query)[16])
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{
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asm volatile(" la %%r1,%[query]\n"
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" xgr %%r0,%%r0\n"
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" .insn rre,0xb92e0000,2,4\n"
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: [query] "=R" (*query)
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:
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: "cc", "r0", "r1");
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}
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/* Testing Crypto Compute Intermediate Message Digest (KIMD) CPU subfunction's ASM block */
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static void test_kimd_asm_block(u8 (*query)[16])
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{
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asm volatile(" la %%r1,%[query]\n"
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" xgr %%r0,%%r0\n"
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" .insn rre,0xb93e0000,0,2\n"
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: [query] "=R" (*query)
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:
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: "cc", "r0", "r1");
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}
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/* Testing Crypto Compute Last Message Digest (KLMD) CPU subfunction's ASM block */
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static void test_klmd_asm_block(u8 (*query)[16])
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{
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asm volatile(" la %%r1,%[query]\n"
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" xgr %%r0,%%r0\n"
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" .insn rre,0xb93f0000,0,2\n"
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: [query] "=R" (*query)
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:
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: "cc", "r0", "r1");
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}
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/* Testing Crypto Cipher Message with Counter (KMCTR) CPU subfunction's ASM block */
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static void test_kmctr_asm_block(u8 (*query)[16])
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{
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asm volatile(" la %%r1,%[query]\n"
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" xgr %%r0,%%r0\n"
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" .insn rrf,0xb92d0000,2,4,6,0\n"
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: [query] "=R" (*query)
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:
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: "cc", "r0", "r1");
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}
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/* Testing Crypto Cipher Message with Cipher Feedback (KMF) CPU subfunction's ASM block */
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static void test_kmf_asm_block(u8 (*query)[16])
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{
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asm volatile(" la %%r1,%[query]\n"
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" xgr %%r0,%%r0\n"
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" .insn rre,0xb92a0000,2,4\n"
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: [query] "=R" (*query)
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:
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: "cc", "r0", "r1");
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}
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/* Testing Crypto Cipher Message with Output Feedback (KMO) CPU subfunction's ASM block */
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static void test_kmo_asm_block(u8 (*query)[16])
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{
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asm volatile(" la %%r1,%[query]\n"
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" xgr %%r0,%%r0\n"
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" .insn rre,0xb92b0000,2,4\n"
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: [query] "=R" (*query)
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:
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: "cc", "r0", "r1");
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}
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/* Testing Crypto Perform Cryptographic Computation (PCC) CPU subfunction's ASM block */
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static void test_pcc_asm_block(u8 (*query)[16])
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{
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asm volatile(" la %%r1,%[query]\n"
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" xgr %%r0,%%r0\n"
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" .insn rre,0xb92c0000,0,0\n"
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: [query] "=R" (*query)
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:
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: "cc", "r0", "r1");
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}
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/* Testing Crypto Perform Random Number Operation (PRNO) CPU subfunction's ASM block */
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static void test_prno_asm_block(u8 (*query)[16])
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{
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asm volatile(" la %%r1,%[query]\n"
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" xgr %%r0,%%r0\n"
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" .insn rre,0xb93c0000,2,4\n"
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: [query] "=R" (*query)
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:
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: "cc", "r0", "r1");
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}
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/* Testing Crypto Cipher Message with Authentication (KMA) CPU subfunction's ASM block */
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static void test_kma_asm_block(u8 (*query)[16])
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{
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asm volatile(" la %%r1,%[query]\n"
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" xgr %%r0,%%r0\n"
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" .insn rrf,0xb9290000,2,4,6,0\n"
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: [query] "=R" (*query)
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:
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: "cc", "r0", "r1");
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}
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/* Testing Crypto Compute Digital Signature Authentication (KDSA) CPU subfunction's ASM block */
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static void test_kdsa_asm_block(u8 (*query)[16])
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{
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asm volatile(" la %%r1,%[query]\n"
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" xgr %%r0,%%r0\n"
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" .insn rre,0xb93a0000,0,2\n"
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: [query] "=R" (*query)
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:
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: "cc", "r0", "r1");
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}
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/* Testing Sort Lists (SORTL) CPU subfunction's ASM block */
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static void test_sortl_asm_block(u8 (*query)[32])
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{
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asm volatile(" lghi 0,0\n"
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" la 1,%[query]\n"
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" .insn rre,0xb9380000,2,4\n"
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: [query] "=R" (*query)
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:
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: "cc", "0", "1");
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}
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/* Testing Deflate Conversion Call (DFLTCC) CPU subfunction's ASM block */
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static void test_dfltcc_asm_block(u8 (*query)[32])
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{
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asm volatile(" lghi 0,0\n"
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" la 1,%[query]\n"
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" .insn rrf,0xb9390000,2,4,6,0\n"
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: [query] "=R" (*query)
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:
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: "cc", "0", "1");
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}
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/*
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* Testing Perform Function with Concurrent Results (PFCR)
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* CPU subfunctions's ASM block
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*/
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static void test_pfcr_asm_block(u8 (*query)[16])
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{
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asm volatile(" lghi 0,0\n"
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" .insn rsy,0xeb0000000016,0,0,%[query]\n"
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: [query] "=QS" (*query)
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:
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: "cc", "0");
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}
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typedef void (*testfunc_t)(u8 (*array)[]);
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struct testdef {
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const char *subfunc_name;
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u8 *subfunc_array;
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size_t array_size;
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testfunc_t test;
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int facility_bit;
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} testlist[] = {
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/*
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* PLO was introduced in the very first 64-bit machine generation.
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* Hence it is assumed PLO is always installed in Z Arch.
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*/
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{ "PLO", cpu_subfunc.plo, sizeof(cpu_subfunc.plo), test_plo_asm_block, 1 },
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/* MSA - Facility bit 17 */
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{ "KMAC", cpu_subfunc.kmac, sizeof(cpu_subfunc.kmac), test_kmac_asm_block, 17 },
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{ "KMC", cpu_subfunc.kmc, sizeof(cpu_subfunc.kmc), test_kmc_asm_block, 17 },
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{ "KM", cpu_subfunc.km, sizeof(cpu_subfunc.km), test_km_asm_block, 17 },
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{ "KIMD", cpu_subfunc.kimd, sizeof(cpu_subfunc.kimd), test_kimd_asm_block, 17 },
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{ "KLMD", cpu_subfunc.klmd, sizeof(cpu_subfunc.klmd), test_klmd_asm_block, 17 },
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/* MSA - Facility bit 77 */
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{ "KMCTR", cpu_subfunc.kmctr, sizeof(cpu_subfunc.kmctr), test_kmctr_asm_block, 77 },
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{ "KMF", cpu_subfunc.kmf, sizeof(cpu_subfunc.kmf), test_kmf_asm_block, 77 },
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{ "KMO", cpu_subfunc.kmo, sizeof(cpu_subfunc.kmo), test_kmo_asm_block, 77 },
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{ "PCC", cpu_subfunc.pcc, sizeof(cpu_subfunc.pcc), test_pcc_asm_block, 77 },
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/* MSA5 - Facility bit 57 */
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{ "PPNO", cpu_subfunc.ppno, sizeof(cpu_subfunc.ppno), test_prno_asm_block, 57 },
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/* MSA8 - Facility bit 146 */
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{ "KMA", cpu_subfunc.kma, sizeof(cpu_subfunc.kma), test_kma_asm_block, 146 },
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/* MSA9 - Facility bit 155 */
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{ "KDSA", cpu_subfunc.kdsa, sizeof(cpu_subfunc.kdsa), test_kdsa_asm_block, 155 },
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/* SORTL - Facility bit 150 */
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{ "SORTL", cpu_subfunc.sortl, sizeof(cpu_subfunc.sortl), test_sortl_asm_block, 150 },
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/* DFLTCC - Facility bit 151 */
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{ "DFLTCC", cpu_subfunc.dfltcc, sizeof(cpu_subfunc.dfltcc), test_dfltcc_asm_block, 151 },
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/* Concurrent-function facility - Facility bit 201 */
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{ "PFCR", cpu_subfunc.pfcr, sizeof(cpu_subfunc.pfcr), test_pfcr_asm_block, 201 },
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};
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int main(int argc, char *argv[])
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{
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struct kvm_vm *vm;
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int idx;
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ksft_print_header();
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vm = vm_create(1);
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memset(&cpu_subfunc, 0, sizeof(cpu_subfunc));
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get_cpu_machine_subfuntions(vm, &cpu_subfunc);
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ksft_set_plan(ARRAY_SIZE(testlist));
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for (idx = 0; idx < ARRAY_SIZE(testlist); idx++) {
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if (test_facility(testlist[idx].facility_bit)) {
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u8 *array = malloc(testlist[idx].array_size);
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testlist[idx].test((u8 (*)[testlist[idx].array_size])array);
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TEST_ASSERT_EQ(memcmp(testlist[idx].subfunc_array,
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array, testlist[idx].array_size), 0);
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ksft_test_result_pass("%s\n", testlist[idx].subfunc_name);
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free(array);
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} else {
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ksft_test_result_skip("%s feature is not avaialable\n",
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testlist[idx].subfunc_name);
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}
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}
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kvm_vm_free(vm);
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ksft_finished();
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}
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