On Fri, 11 Dec 2020 05:00:37 -0500
Janosch Frank <frankja@xxxxxxxxxxxxx> wrote:
> Let's check if we get the correct interception data on a few
> diags. This commit is more of an addition of boilerplate code than a
> real test.
Reviewed-by: Claudio Imbrenda <imbrenda@xxxxxxxxxxxxx>
> Signed-off-by: Janosch Frank <frankja@xxxxxxxxxxxxx>
> ---
> s390x/Makefile | 1 +
> s390x/sie.c | 113
> ++++++++++++++++++++++++++++++++++++++++++++ s390x/unittests.cfg |
> 3 ++ 3 files changed, 117 insertions(+)
> create mode 100644 s390x/sie.c
>
> diff --git a/s390x/Makefile b/s390x/Makefile
> index fb62e87..8e1b4e9 100644
> --- a/s390x/Makefile
> +++ b/s390x/Makefile
> @@ -19,6 +19,7 @@ tests += $(TEST_DIR)/smp.elf
> tests += $(TEST_DIR)/sclp.elf
> tests += $(TEST_DIR)/css.elf
> tests += $(TEST_DIR)/uv-guest.elf
> +tests += $(TEST_DIR)/sie.elf
>
> tests_binary = $(patsubst %.elf,%.bin,$(tests))
> ifneq ($(HOST_KEY_DOCUMENT),)
> diff --git a/s390x/sie.c b/s390x/sie.c
> new file mode 100644
> index 0000000..cfc746f
> --- /dev/null
> +++ b/s390x/sie.c
> @@ -0,0 +1,113 @@
> +#include <libcflat.h>
> +#include <asm/asm-offsets.h>
> +#include <asm/arch_def.h>
> +#include <asm/interrupt.h>
> +#include <asm/page.h>
> +#include <alloc_page.h>
> +#include <vmalloc.h>
> +#include <asm/facility.h>
> +#include <mmu.h>
> +#include <sclp.h>
> +#include <sie.h>
> +
> +static u8 *guest;
> +static u8 *guest_instr;
> +static struct vm vm;
> +
> +static void handle_validity(struct vm *vm)
> +{
> + report(0, "VALIDITY: %x", vm->sblk->ipb >> 16);
> +}
> +
> +static void sie(struct vm *vm)
> +{
> + while (vm->sblk->icptcode == 0) {
> + sie64a(vm->sblk, &vm->save_area);
> + if (vm->sblk->icptcode == ICPT_VALIDITY)
> + handle_validity(vm);
> + }
> + vm->save_area.guest.grs[14] = vm->sblk->gg14;
> + vm->save_area.guest.grs[15] = vm->sblk->gg15;
> +}
> +
> +static void sblk_cleanup(struct vm *vm)
> +{
> + vm->sblk->icptcode = 0;
> +}
> +
> +static void test_diag(u32 instr)
> +{
> + vm.sblk->gpsw.addr = PAGE_SIZE * 2;
> + vm.sblk->gpsw.mask = 0x0000000180000000ULL;
> +
> + memset(guest_instr, 0, PAGE_SIZE);
> + memcpy(guest_instr, &instr, 4);
> + sie(&vm);
> + report(vm.sblk->icptcode == ICPT_INST &&
> + vm.sblk->ipa == instr >> 16 && vm.sblk->ipb == instr
> << 16,
> + "Intercept data");
> + sblk_cleanup(&vm);
> +}
> +
> +static struct {
> + const char *name;
> + u32 instr;
> +} tests[] = {
> + { "10", 0x83020010 },
> + { "44", 0x83020044 },
> + { "9c", 0x8302009c },
> + { NULL, 0 }
> +};
> +
> +static void test_diags(void)
> +{
> + int i;
> +
> + for (i = 0; tests[i].name; i++) {
> + report_prefix_push(tests[i].name);
> + test_diag(tests[i].instr);
> + report_prefix_pop();
> + }
> +}
> +
> +static void setup_guest(void)
> +{
> + setup_vm();
> +
> + /* Allocate 1MB as guest memory */
> + guest = alloc_pages(8);
> + /* The first two pages are the lowcore */
> + guest_instr = guest + PAGE_SIZE * 2;
> +
> + vm.sblk = alloc_page();
> +
> + vm.sblk->cpuflags = CPUSTAT_ZARCH | CPUSTAT_RUNNING;
> + vm.sblk->prefix = 0;
> + /*
> + * Pageable guest with the same ASCE as the test programm,
> but
> + * the guest memory 0x0 is offset to start at the allocated
> + * guest pages and end after 1MB.
> + *
> + * It's not pretty but faster and easier than managing guest
> ASCEs.
> + */
> + vm.sblk->mso = (u64)guest;
> + vm.sblk->msl = (u64)guest;
> + vm.sblk->ihcpu = 0xffff;
> +
> + vm.sblk->crycbd = (uint64_t)alloc_page();
> +}
> +
> +int main(void)
> +{
> + report_prefix_push("sie");
> + if (!sclp_facilities.has_sief2) {
> + report_skip("SIEF2 facility unavailable");
> + goto done;
> + }
> +
> + setup_guest();
> + test_diags();
> +done:
> + report_prefix_pop();
> + return report_summary();
> +}
> diff --git a/s390x/unittests.cfg b/s390x/unittests.cfg
> index 3feb8bc..2298be6 100644
> --- a/s390x/unittests.cfg
> +++ b/s390x/unittests.cfg
> @@ -96,3 +96,6 @@ smp = 2
>
> [uv-guest]
> file = uv-guest.elf
> +
> +[sie]
> +file = sie.elf
