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10248418b4
There's no VSIE support for a protected guest, so let's better not
advertise it and its support facilities.
Fixes: c3347ed0d2 ("s390x: protvirt: Support unpack facility")
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20201211105109.2913-1-frankja@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
256 lines
8.6 KiB
C
256 lines
8.6 KiB
C
/*
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* CPU features/facilities for s390x
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*
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* Copyright IBM Corp. 2016, 2018
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* Copyright Red Hat, Inc. 2019
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*
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* Author(s): David Hildenbrand <david@redhat.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or (at
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* your option) any later version. See the COPYING file in the top-level
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* directory.
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*/
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#include "qemu/osdep.h"
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#include "qemu/module.h"
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#include "cpu_features.h"
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#include "hw/s390x/pv.h"
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#define DEF_FEAT(_FEAT, _NAME, _TYPE, _BIT, _DESC) \
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[S390_FEAT_##_FEAT] = { \
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.name = _NAME, \
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.type = S390_FEAT_TYPE_##_TYPE, \
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.bit = _BIT, \
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.desc = _DESC, \
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},
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static const S390FeatDef s390_features[S390_FEAT_MAX] = {
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#include "cpu_features_def.h.inc"
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};
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#undef DEF_FEAT
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const S390FeatDef *s390_feat_def(S390Feat feat)
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{
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return &s390_features[feat];
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}
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S390Feat s390_feat_by_type_and_bit(S390FeatType type, int bit)
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{
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S390Feat feat;
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for (feat = 0; feat < ARRAY_SIZE(s390_features); feat++) {
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if (s390_features[feat].type == type &&
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s390_features[feat].bit == bit) {
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return feat;
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}
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}
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return S390_FEAT_MAX;
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}
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void s390_init_feat_bitmap(const S390FeatInit init, S390FeatBitmap bitmap)
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{
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int i, j;
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for (i = 0; i < (S390_FEAT_MAX / 64 + 1); i++) {
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if (init[i]) {
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for (j = 0; j < 64; j++) {
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if (init[i] & 1ULL << j) {
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set_bit(i * 64 + j, bitmap);
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}
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}
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}
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}
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}
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void s390_fill_feat_block(const S390FeatBitmap features, S390FeatType type,
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uint8_t *data)
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{
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S390Feat feat;
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int bit_nr;
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switch (type) {
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case S390_FEAT_TYPE_STFL:
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if (test_bit(S390_FEAT_ZARCH, features)) {
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/* Features that are always active */
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set_be_bit(2, data); /* z/Architecture */
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set_be_bit(138, data); /* Configuration-z-architectural-mode */
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}
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break;
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case S390_FEAT_TYPE_PTFF:
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case S390_FEAT_TYPE_KMAC:
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case S390_FEAT_TYPE_KMC:
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case S390_FEAT_TYPE_KM:
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case S390_FEAT_TYPE_KIMD:
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case S390_FEAT_TYPE_KLMD:
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case S390_FEAT_TYPE_PCKMO:
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case S390_FEAT_TYPE_KMCTR:
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case S390_FEAT_TYPE_KMF:
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case S390_FEAT_TYPE_KMO:
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case S390_FEAT_TYPE_PCC:
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case S390_FEAT_TYPE_PPNO:
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case S390_FEAT_TYPE_KMA:
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case S390_FEAT_TYPE_KDSA:
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case S390_FEAT_TYPE_SORTL:
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case S390_FEAT_TYPE_DFLTCC:
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set_be_bit(0, data); /* query is always available */
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break;
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default:
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break;
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};
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feat = find_first_bit(features, S390_FEAT_MAX);
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while (feat < S390_FEAT_MAX) {
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if (s390_features[feat].type == type) {
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bit_nr = s390_features[feat].bit;
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/* big endian on uint8_t array */
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set_be_bit(bit_nr, data);
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}
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feat = find_next_bit(features, S390_FEAT_MAX, feat + 1);
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}
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if (!s390_is_pv()) {
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return;
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}
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/*
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* Some facilities are not available for CPUs in protected mode:
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* - All SIE facilities because SIE is not available
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* - DIAG318
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*
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* As VMs can move in and out of protected mode the CPU model
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* doesn't protect us from that problem because it is only
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* validated at the start of the VM.
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*/
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switch (type) {
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case S390_FEAT_TYPE_SCLP_CPU:
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clear_be_bit(s390_feat_def(S390_FEAT_SIE_F2)->bit, data);
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clear_be_bit(s390_feat_def(S390_FEAT_SIE_SKEY)->bit, data);
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clear_be_bit(s390_feat_def(S390_FEAT_SIE_GPERE)->bit, data);
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clear_be_bit(s390_feat_def(S390_FEAT_SIE_SIIF)->bit, data);
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clear_be_bit(s390_feat_def(S390_FEAT_SIE_SIGPIF)->bit, data);
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clear_be_bit(s390_feat_def(S390_FEAT_SIE_IB)->bit, data);
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clear_be_bit(s390_feat_def(S390_FEAT_SIE_CEI)->bit, data);
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break;
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case S390_FEAT_TYPE_SCLP_CONF_CHAR:
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clear_be_bit(s390_feat_def(S390_FEAT_SIE_GSLS)->bit, data);
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clear_be_bit(s390_feat_def(S390_FEAT_HPMA2)->bit, data);
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clear_be_bit(s390_feat_def(S390_FEAT_SIE_KSS)->bit, data);
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break;
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case S390_FEAT_TYPE_SCLP_CONF_CHAR_EXT:
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clear_be_bit(s390_feat_def(S390_FEAT_SIE_64BSCAO)->bit, data);
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clear_be_bit(s390_feat_def(S390_FEAT_SIE_CMMA)->bit, data);
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clear_be_bit(s390_feat_def(S390_FEAT_SIE_PFMFI)->bit, data);
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clear_be_bit(s390_feat_def(S390_FEAT_SIE_IBS)->bit, data);
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break;
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case S390_FEAT_TYPE_SCLP_FAC134:
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clear_be_bit(s390_feat_def(S390_FEAT_DIAG_318)->bit, data);
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break;
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default:
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return;
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}
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}
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void s390_add_from_feat_block(S390FeatBitmap features, S390FeatType type,
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uint8_t *data)
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{
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int nr_bits, le_bit;
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switch (type) {
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case S390_FEAT_TYPE_STFL:
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nr_bits = 16384;
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break;
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case S390_FEAT_TYPE_PLO:
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case S390_FEAT_TYPE_SORTL:
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case S390_FEAT_TYPE_DFLTCC:
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nr_bits = 256;
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break;
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default:
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/* all cpu subfunctions have 128 bit */
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nr_bits = 128;
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};
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le_bit = find_first_bit((unsigned long *) data, nr_bits);
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while (le_bit < nr_bits) {
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/* convert the bit number to a big endian bit nr */
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S390Feat feat = s390_feat_by_type_and_bit(type, BE_BIT_NR(le_bit));
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/* ignore unknown bits */
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if (feat < S390_FEAT_MAX) {
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set_bit(feat, features);
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}
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le_bit = find_next_bit((unsigned long *) data, nr_bits, le_bit + 1);
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}
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}
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void s390_feat_bitmap_to_ascii(const S390FeatBitmap features, void *opaque,
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void (*fn)(const char *name, void *opaque))
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{
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S390FeatBitmap bitmap, tmp;
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S390FeatGroup group;
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S390Feat feat;
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bitmap_copy(bitmap, features, S390_FEAT_MAX);
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/* process whole groups first */
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for (group = 0; group < S390_FEAT_GROUP_MAX; group++) {
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const S390FeatGroupDef *def = s390_feat_group_def(group);
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bitmap_and(tmp, bitmap, def->feat, S390_FEAT_MAX);
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if (bitmap_equal(tmp, def->feat, S390_FEAT_MAX)) {
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bitmap_andnot(bitmap, bitmap, def->feat, S390_FEAT_MAX);
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fn(def->name, opaque);
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}
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}
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/* report leftovers as separate features */
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feat = find_first_bit(bitmap, S390_FEAT_MAX);
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while (feat < S390_FEAT_MAX) {
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fn(s390_feat_def(feat)->name, opaque);
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feat = find_next_bit(bitmap, S390_FEAT_MAX, feat + 1);
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};
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}
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#define FEAT_GROUP_INIT(_name, _group, _desc) \
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{ \
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.name = _name, \
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.desc = _desc, \
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.init = { S390_FEAT_GROUP_LIST_ ## _group }, \
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}
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/* indexed by feature group number for easy lookup */
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static S390FeatGroupDef s390_feature_groups[] = {
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FEAT_GROUP_INIT("plo", PLO, "Perform-locked-operation facility"),
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FEAT_GROUP_INIT("tods", TOD_CLOCK_STEERING, "Tod-clock-steering facility"),
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FEAT_GROUP_INIT("gen13ptff", GEN13_PTFF, "PTFF enhancements introduced with z13"),
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FEAT_GROUP_INIT("msa", MSA, "Message-security-assist facility"),
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FEAT_GROUP_INIT("msa1", MSA_EXT_1, "Message-security-assist-extension 1 facility"),
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FEAT_GROUP_INIT("msa2", MSA_EXT_2, "Message-security-assist-extension 2 facility"),
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FEAT_GROUP_INIT("msa3", MSA_EXT_3, "Message-security-assist-extension 3 facility"),
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FEAT_GROUP_INIT("msa4", MSA_EXT_4, "Message-security-assist-extension 4 facility"),
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FEAT_GROUP_INIT("msa5", MSA_EXT_5, "Message-security-assist-extension 5 facility"),
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FEAT_GROUP_INIT("msa6", MSA_EXT_6, "Message-security-assist-extension 6 facility"),
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FEAT_GROUP_INIT("msa7", MSA_EXT_7, "Message-security-assist-extension 7 facility"),
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FEAT_GROUP_INIT("msa8", MSA_EXT_8, "Message-security-assist-extension 8 facility"),
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FEAT_GROUP_INIT("msa9", MSA_EXT_9, "Message-security-assist-extension 9 facility"),
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FEAT_GROUP_INIT("msa9_pckmo", MSA_EXT_9_PCKMO, "Message-security-assist-extension 9 PCKMO subfunctions"),
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FEAT_GROUP_INIT("mepochptff", MULTIPLE_EPOCH_PTFF, "PTFF enhancements introduced with Multiple-epoch facility"),
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FEAT_GROUP_INIT("esort", ENH_SORT, "Enhanced-sort facility"),
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FEAT_GROUP_INIT("deflate", DEFLATE_CONVERSION, "Deflate-conversion facility"),
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};
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const S390FeatGroupDef *s390_feat_group_def(S390FeatGroup group)
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{
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return &s390_feature_groups[group];
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}
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static void init_groups(void)
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{
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int i;
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/* init all bitmaps from gnerated data initially */
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for (i = 0; i < ARRAY_SIZE(s390_feature_groups); i++) {
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s390_init_feat_bitmap(s390_feature_groups[i].init,
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s390_feature_groups[i].feat);
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}
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}
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type_init(init_groups)
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