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// SPDX-License-Identifier: GPL-2.0
/*
* Simple program to generate defines out of facility lists that use the bit
* numbering scheme from the Princples of Operations: most significant bit
* has bit number 0.
*
* Copyright IBM Corp. 2015, 2018
*
*/
#include <strings.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
struct facility_def {
char *name;
int *bits;
};
static struct facility_def facility_defs[] = {
{
/*
* FACILITIES_ALS contains the list of facilities that are
* required to run a kernel that is compiled e.g. with
* -march=<machine>.
*/
.name = "FACILITIES_ALS",
.bits = (int[]){
#ifdef CONFIG_HAVE_MARCH_Z900_FEATURES
0, /* N3 instructions */
1, /* z/Arch mode installed */
#endif
#ifdef CONFIG_HAVE_MARCH_Z990_FEATURES
18, /* long displacement facility */
#endif
#ifdef CONFIG_HAVE_MARCH_Z9_109_FEATURES
21, /* extended-immediate facility */
25, /* store clock fast */
#endif
#ifdef CONFIG_HAVE_MARCH_Z10_FEATURES
27, /* mvcos */
32, /* compare and swap and store */
33, /* compare and swap and store 2 */
34, /* general instructions extension */
35, /* execute extensions */
#endif
#ifdef CONFIG_HAVE_MARCH_Z196_FEATURES
45, /* fast-BCR, etc. */
#endif
#ifdef CONFIG_HAVE_MARCH_ZEC12_FEATURES
49, /* misc-instruction-extensions */
52, /* interlocked facility 2 */
#endif
#ifdef CONFIG_HAVE_MARCH_Z13_FEATURES
53, /* load-and-zero-rightmost-byte, etc. */
#endif
#ifdef CONFIG_HAVE_MARCH_Z14_FEATURES
58, /* miscellaneous-instruction-extension 2 */
#endif
-1 /* END */
}
},
{
/*
* FACILITIES_KVM contains the list of facilities that are part
* of the default facility mask and list that are passed to the
* initial CPU model. If no CPU model is used, this, together
* with the non-hypervisor managed bits, is the maximum list of
* guest facilities supported by KVM.
*/
.name = "FACILITIES_KVM",
.bits = (int[]){
0, /* N3 instructions */
1, /* z/Arch mode installed */
2, /* z/Arch mode active */
3, /* DAT-enhancement */
4, /* idte segment table */
5, /* idte region table */
6, /* ASN-and-LX reuse */
7, /* stfle */
8, /* enhanced-DAT 1 */
9, /* sense-running-status */
10, /* conditional sske */
13, /* ipte-range */
14, /* nonquiescing key-setting */
73, /* transactional execution */
75, /* access-exception-fetch/store indication */
76, /* msa extension 3 */
77, /* msa extension 4 */
78, /* enhanced-DAT 2 */
130, /* instruction-execution-protection */
131, /* enhanced-SOP 2 and side-effect */
139, /* multiple epoch facility */
146, /* msa extension 8 */
-1 /* END */
}
},
{
/*
* FACILITIES_KVM_CPUMODEL contains the list of facilities
* that can be enabled by CPU model code if the host supports
* it. These facilities are not passed to the guest without
* CPU model support.
*/
.name = "FACILITIES_KVM_CPUMODEL",
.bits = (int[]){
156, /* etoken facility */
-1 /* END */
}
},
};
static void print_facility_list(struct facility_def *def)
{
unsigned int high, bit, dword, i;
unsigned long long *array;
array = calloc(1, 8);
if (!array)
exit(EXIT_FAILURE);
high = 0;
for (i = 0; def->bits[i] != -1; i++) {
bit = 63 - (def->bits[i] & 63);
dword = def->bits[i] / 64;
if (dword > high) {
array = realloc(array, (dword + 1) * 8);
if (!array)
exit(EXIT_FAILURE);
memset(array + high + 1, 0, (dword - high) * 8);
high = dword;
}
array[dword] |= 1ULL << bit;
}
printf("#define %s ", def->name);
for (i = 0; i <= high; i++)
printf("_AC(0x%016llx,UL)%c", array[i], i < high ? ',' : '\n');
free(array);
}
static void print_facility_lists(void)
{
unsigned int i;
for (i = 0; i < sizeof(facility_defs) / sizeof(facility_defs[0]); i++)
print_facility_list(&facility_defs[i]);
}
int main(int argc, char **argv)
{
printf("#ifndef __ASM_S390_FACILITY_DEFS__\n");
printf("#define __ASM_S390_FACILITY_DEFS__\n");
printf("/*\n");
printf(" * DO NOT MODIFY.\n");
printf(" *\n");
printf(" * This file was generated by %s\n", __FILE__);
printf(" */\n\n");
printf("#include <linux/const.h>\n\n");
print_facility_lists();
printf("\n#endif\n");
return 0;
}
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