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Diffstat (limited to 'arch/powerpc/platforms/pseries/lpar.c')
-rw-r--r--arch/powerpc/platforms/pseries/lpar.c115
1 files changed, 73 insertions, 42 deletions
diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c
index e384a5a9179607..ab0c6dd6ec9453 100644
--- a/arch/powerpc/platforms/pseries/lpar.c
+++ b/arch/powerpc/platforms/pseries/lpar.c
@@ -19,7 +19,7 @@
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
-#define DEBUG
+#undef DEBUG_LOW
#include <linux/config.h>
#include <linux/kernel.h>
@@ -41,10 +41,10 @@
#include "plpar_wrappers.h"
-#ifdef DEBUG
-#define DBG(fmt...) udbg_printf(fmt)
+#ifdef DEBUG_LOW
+#define DBG_LOW(fmt...) do { udbg_printf(fmt); } while(0)
#else
-#define DBG(fmt...)
+#define DBG_LOW(fmt...) do { } while(0)
#endif
/* in pSeries_hvCall.S */
@@ -276,8 +276,9 @@ void vpa_init(int cpu)
}
long pSeries_lpar_hpte_insert(unsigned long hpte_group,
- unsigned long va, unsigned long prpn,
- unsigned long vflags, unsigned long rflags)
+ unsigned long va, unsigned long pa,
+ unsigned long rflags, unsigned long vflags,
+ int psize)
{
unsigned long lpar_rc;
unsigned long flags;
@@ -285,11 +286,28 @@ long pSeries_lpar_hpte_insert(unsigned long hpte_group,
unsigned long hpte_v, hpte_r;
unsigned long dummy0, dummy1;
- hpte_v = ((va >> 23) << HPTE_V_AVPN_SHIFT) | vflags | HPTE_V_VALID;
- if (vflags & HPTE_V_LARGE)
- hpte_v &= ~(1UL << HPTE_V_AVPN_SHIFT);
-
- hpte_r = (prpn << HPTE_R_RPN_SHIFT) | rflags;
+ if (!(vflags & HPTE_V_BOLTED))
+ DBG_LOW("hpte_insert(group=%lx, va=%016lx, pa=%016lx, "
+ "rflags=%lx, vflags=%lx, psize=%d)\n",
+ hpte_group, va, pa, rflags, vflags, psize);
+
+ hpte_v = hpte_encode_v(va, psize) | vflags | HPTE_V_VALID;
+ hpte_r = hpte_encode_r(pa, psize) | rflags;
+
+ if (!(vflags & HPTE_V_BOLTED))
+ DBG_LOW(" hpte_v=%016lx, hpte_r=%016lx\n", hpte_v, hpte_r);
+
+#if 1
+ {
+ int i;
+ for (i=0;i<8;i++) {
+ unsigned long w0, w1;
+ plpar_pte_read(0, hpte_group, &w0, &w1);
+ BUG_ON (HPTE_V_COMPARE(hpte_v, w0)
+ && (w0 & HPTE_V_VALID));
+ }
+ }
+#endif
/* Now fill in the actual HPTE */
/* Set CEC cookie to 0 */
@@ -299,23 +317,30 @@ long pSeries_lpar_hpte_insert(unsigned long hpte_group,
/* Exact = 0 */
flags = 0;
- /* XXX why is this here? - Anton */
+ /* Make pHyp happy */
if (rflags & (_PAGE_GUARDED|_PAGE_NO_CACHE))
hpte_r &= ~_PAGE_COHERENT;
lpar_rc = plpar_hcall(H_ENTER, flags, hpte_group, hpte_v,
hpte_r, &slot, &dummy0, &dummy1);
-
- if (unlikely(lpar_rc == H_PTEG_Full))
+ if (unlikely(lpar_rc == H_PTEG_Full)) {
+ if (!(vflags & HPTE_V_BOLTED))
+ DBG_LOW(" full\n");
return -1;
+ }
/*
* Since we try and ioremap PHBs we don't own, the pte insert
* will fail. However we must catch the failure in hash_page
* or we will loop forever, so return -2 in this case.
*/
- if (unlikely(lpar_rc != H_Success))
+ if (unlikely(lpar_rc != H_Success)) {
+ if (!(vflags & HPTE_V_BOLTED))
+ DBG_LOW(" lpar err %d\n", lpar_rc);
return -2;
+ }
+ if (!(vflags & HPTE_V_BOLTED))
+ DBG_LOW(" -> slot: %d\n", slot & 7);
/* Because of iSeries, we have to pass down the secondary
* bucket bit here as well
@@ -340,10 +365,8 @@ static long pSeries_lpar_hpte_remove(unsigned long hpte_group)
/* don't remove a bolted entry */
lpar_rc = plpar_pte_remove(H_ANDCOND, hpte_group + slot_offset,
(0x1UL << 4), &dummy1, &dummy2);
-
if (lpar_rc == H_Success)
return i;
-
BUG_ON(lpar_rc != H_Not_Found);
slot_offset++;
@@ -371,20 +394,28 @@ static void pSeries_lpar_hptab_clear(void)
* We can probably optimize here and assume the high bits of newpp are
* already zero. For now I am paranoid.
*/
-static long pSeries_lpar_hpte_updatepp(unsigned long slot, unsigned long newpp,
- unsigned long va, int large, int local)
+static long pSeries_lpar_hpte_updatepp(unsigned long slot,
+ unsigned long newpp,
+ unsigned long va,
+ int psize, int local)
{
unsigned long lpar_rc;
unsigned long flags = (newpp & 7) | H_AVPN;
- unsigned long avpn = va >> 23;
+ unsigned long want_v;
- if (large)
- avpn &= ~0x1UL;
+ want_v = hpte_encode_v(va, psize);
- lpar_rc = plpar_pte_protect(flags, slot, (avpn << 7));
+ DBG_LOW(" update: avpnv=%016lx, hash=%016lx, f=%x, psize: %d ... ",
+ want_v & HPTE_V_AVPN, slot, flags, psize);
- if (lpar_rc == H_Not_Found)
+ lpar_rc = plpar_pte_protect(flags, slot, want_v & HPTE_V_AVPN);
+
+ if (lpar_rc == H_Not_Found) {
+ DBG_LOW("not found !\n");
return -1;
+ }
+
+ DBG_LOW("ok\n");
BUG_ON(lpar_rc != H_Success);
@@ -410,21 +441,22 @@ static unsigned long pSeries_lpar_hpte_getword0(unsigned long slot)
return dword0;
}
-static long pSeries_lpar_hpte_find(unsigned long vpn)
+static long pSeries_lpar_hpte_find(unsigned long va, int psize)
{
unsigned long hash;
unsigned long i, j;
long slot;
- unsigned long hpte_v;
+ unsigned long want_v, hpte_v;
- hash = hpt_hash(vpn, 0);
+ hash = hpt_hash(va, mmu_psize_defs[psize].shift);
+ want_v = hpte_encode_v(va, psize);
for (j = 0; j < 2; j++) {
slot = (hash & htab_hash_mask) * HPTES_PER_GROUP;
for (i = 0; i < HPTES_PER_GROUP; i++) {
hpte_v = pSeries_lpar_hpte_getword0(slot);
- if ((HPTE_V_AVPN_VAL(hpte_v) == (vpn >> 11))
+ if (HPTE_V_COMPARE(hpte_v, want_v)
&& (hpte_v & HPTE_V_VALID)
&& (!!(hpte_v & HPTE_V_SECONDARY) == j)) {
/* HPTE matches */
@@ -441,17 +473,15 @@ static long pSeries_lpar_hpte_find(unsigned long vpn)
}
static void pSeries_lpar_hpte_updateboltedpp(unsigned long newpp,
- unsigned long ea)
+ unsigned long ea,
+ int psize)
{
- unsigned long lpar_rc;
- unsigned long vsid, va, vpn, flags;
- long slot;
+ unsigned long lpar_rc, slot, vsid, va, flags;
vsid = get_kernel_vsid(ea);
va = (vsid << 28) | (ea & 0x0fffffff);
- vpn = va >> PAGE_SHIFT;
- slot = pSeries_lpar_hpte_find(vpn);
+ slot = pSeries_lpar_hpte_find(va, psize);
BUG_ON(slot == -1);
flags = newpp & 7;
@@ -461,18 +491,18 @@ static void pSeries_lpar_hpte_updateboltedpp(unsigned long newpp,
}
static void pSeries_lpar_hpte_invalidate(unsigned long slot, unsigned long va,
- int large, int local)
+ int psize, int local)
{
- unsigned long avpn = va >> 23;
+ unsigned long want_v;
unsigned long lpar_rc;
unsigned long dummy1, dummy2;
- if (large)
- avpn &= ~0x1UL;
-
- lpar_rc = plpar_pte_remove(H_AVPN, slot, (avpn << 7), &dummy1,
- &dummy2);
+ DBG_LOW(" inval : slot=%lx, va=%016lx, psize: %d, local: %d",
+ slot, va, psize, local);
+ want_v = hpte_encode_v(va, psize);
+ lpar_rc = plpar_pte_remove(H_AVPN, slot, want_v & HPTE_V_AVPN,
+ &dummy1, &dummy2);
if (lpar_rc == H_Not_Found)
return;
@@ -494,7 +524,8 @@ void pSeries_lpar_flush_hash_range(unsigned long number, int local)
spin_lock_irqsave(&pSeries_lpar_tlbie_lock, flags);
for (i = 0; i < number; i++)
- flush_hash_page(batch->vaddr[i], batch->pte[i], local);
+ flush_hash_page(batch->vaddr[i], batch->pte[i],
+ batch->psize, local);
if (lock_tlbie)
spin_unlock_irqrestore(&pSeries_lpar_tlbie_lock, flags);
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-04-27 20:25:24 +0000