It's needed by other tests soon.
Signed-off-by: Janosch Frank <frankja@xxxxxxxxxxxxx>
---
lib/s390x/asm/mem.h | 31 ++++++++++++++++++++++
s390x/pfmf.c | 63 ++++++++++++++-------------------------------
2 files changed, 50 insertions(+), 44 deletions(-)
diff --git a/lib/s390x/asm/mem.h b/lib/s390x/asm/mem.h
index 75bd778..9b8fd70 100644
--- a/lib/s390x/asm/mem.h
+++ b/lib/s390x/asm/mem.h
@@ -54,4 +54,35 @@ static inline unsigned char get_storage_key(unsigned long addr)
asm volatile("iske %0,%1" : "=d" (skey) : "a" (addr));
return skey;
}
+
+#define PFMF_FSC_4K 0
+#define PFMF_FSC_1M 1
+#define PFMF_FSC_2G 2
+
+union pfmf_r1 {
+ struct {
+ unsigned long pad0 : 32;
+ unsigned long pad1 : 12;
+ unsigned long pad_fmfi : 2;
+ unsigned long sk : 1; /* set key*/
+ unsigned long cf : 1; /* clear frame */
+ unsigned long ui : 1; /* usage indication */
+ unsigned long fsc : 3;
+ unsigned long pad2 : 1;
+ unsigned long mr : 1;
+ unsigned long mc : 1;
+ unsigned long pad3 : 1;
+ unsigned long key : 8; /* storage keys */
+ } reg;
+ unsigned long val;
+};
+
+static inline void *pfmf(unsigned long r1, void *paddr)
+{
+ register void * addr asm("1") = paddr;
+
+ asm volatile(".insn rre,0xb9af0000,%[r1],%[addr]"
+ : [addr] "+a" (addr) : [r1] "d" (r1) : "memory");
+ return addr;
+}
#endif
diff --git a/s390x/pfmf.c b/s390x/pfmf.c
index 9bf434a..0aa5822 100644
--- a/s390x/pfmf.c
+++ b/s390x/pfmf.c
@@ -16,60 +16,29 @@
#include <asm/facility.h>
#include <asm/mem.h>
-#define FSC_4K 0
-#define FSC_1M 1
-#define FSC_2G 2
-
-union r1 {
- struct {
- unsigned long pad0 : 32;
- unsigned long pad1 : 12;
- unsigned long pad_fmfi : 2;
- unsigned long sk : 1; /* set key*/
- unsigned long cf : 1; /* clear frame */
- unsigned long ui : 1; /* usage indication */
- unsigned long fsc : 3;
- unsigned long pad2 : 1;
- unsigned long mr : 1;
- unsigned long mc : 1;
- unsigned long pad3 : 1;
- unsigned long key : 8; /* storage keys */
- } reg;
- unsigned long val;
-};
-
static uint8_t pagebuf[PAGE_SIZE * 256] __attribute__((aligned(PAGE_SIZE * 256)));
-static inline unsigned long pfmf(unsigned long r1, unsigned long paddr)
-{
- register uint64_t addr asm("1") = paddr;
-
- asm volatile(".insn rre,0xb9af0000,%[r1],%[addr]"
- : [addr] "+a" (addr) : [r1] "d" (r1) : "memory");
- return addr;
-}
-
static void test_priv(void)
{
report_prefix_push("privileged");
expect_pgm_int();
enter_pstate();
- pfmf(0, (unsigned long) pagebuf);
+ pfmf(0, pagebuf);
check_pgm_int_code(PGM_INT_CODE_PRIVILEGED_OPERATION);
report_prefix_pop();
}
static void test_4k_key(void)
{
- union r1 r1;
+ union pfmf_r1 r1;
union skey skey;
report_prefix_push("4K");
r1.val = 0;
r1.reg.sk = 1;
- r1.reg.fsc = FSC_4K;
+ r1.reg.fsc = PFMF_FSC_4K;
r1.reg.key = 0x30;
- pfmf(r1.val, (unsigned long) pagebuf);
+ pfmf(r1.val, pagebuf);
skey.val = get_storage_key((unsigned long) pagebuf);
skey.val &= SKEY_ACC | SKEY_FP;
report("set storage keys", skey.val == 0x30);
@@ -80,15 +49,18 @@ static void test_1m_key(void)
{
int i;
bool rp = true;
- union r1 r1;
+ union pfmf_r1 r1;
union skey skey;
+ void *addr = pagebuf;
report_prefix_push("1M");
r1.val = 0;
r1.reg.sk = 1;
- r1.reg.fsc = FSC_1M;
+ r1.reg.fsc = PFMF_FSC_1M;
r1.reg.key = 0x30;
- pfmf(r1.val, (unsigned long) pagebuf);
+ while (addr != pagebuf + 256 * PAGE_SIZE) {
+ addr = pfmf(r1.val, addr);
+ }
for (i = 0; i < 256; i++) {
skey.val = get_storage_key((unsigned long) pagebuf + i * PAGE_SIZE);
skey.val &= SKEY_ACC | SKEY_FP;
@@ -103,15 +75,15 @@ static void test_1m_key(void)
static void test_4k_clear(void)
{
- union r1 r1;
+ union pfmf_r1 r1;
r1.val = 0;
r1.reg.cf = 1;
- r1.reg.fsc = FSC_4K;
+ r1.reg.fsc = PFMF_FSC_4K;
report_prefix_push("4K");
memset(pagebuf, 42, PAGE_SIZE);
- pfmf(r1.val, (unsigned long) pagebuf);
+ pfmf(r1.val, pagebuf);
report("clear memory", !memcmp(pagebuf, pagebuf + PAGE_SIZE, PAGE_SIZE));
report_prefix_pop();
}
@@ -119,16 +91,19 @@ static void test_4k_clear(void)
static void test_1m_clear(void)
{
int i;
- union r1 r1;
+ union pfmf_r1 r1;
unsigned long sum = 0;
+ void *addr = pagebuf;
r1.val = 0;
r1.reg.cf = 1;
- r1.reg.fsc = FSC_1M;
+ r1.reg.fsc = PFMF_FSC_1M;
report_prefix_push("1M");
memset(pagebuf, 42, PAGE_SIZE * 256);
- pfmf(r1.val, (unsigned long) pagebuf);
+ while (addr != pagebuf + 256 * PAGE_SIZE) {
+ addr = pfmf(r1.val, addr);
+ }
for (i = 0; i < PAGE_SIZE * 256; i++)
sum |= pagebuf[i];
report("clear memory", !sum);
--
2.17.0
