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-rw-r--r--arch/powerpc/platforms/pseries/plpar_wrappers.h27
-rw-r--r--arch/powerpc/platforms/pseries/setup.c28
2 files changed, 45 insertions, 10 deletions
diff --git a/arch/powerpc/platforms/pseries/plpar_wrappers.h b/arch/powerpc/platforms/pseries/plpar_wrappers.h
index a437267c6bf..d967c1893ab 100644
--- a/arch/powerpc/platforms/pseries/plpar_wrappers.h
+++ b/arch/powerpc/platforms/pseries/plpar_wrappers.h
@@ -2,6 +2,7 @@
#define _PSERIES_PLPAR_WRAPPERS_H
#include <asm/hvcall.h>
+#include <asm/page.h>
static inline long poll_pending(void)
{
@@ -44,12 +45,34 @@ static inline long register_slb_shadow(unsigned long cpu, unsigned long vpa)
static inline long plpar_page_set_loaned(unsigned long vpa)
{
- return plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_LOANED, vpa, 0);
+ unsigned long cmo_page_sz = cmo_get_page_size();
+ long rc = 0;
+ int i;
+
+ for (i = 0; !rc && i < PAGE_SIZE; i += cmo_page_sz)
+ rc = plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_LOANED, vpa + i, 0);
+
+ for (i -= cmo_page_sz; rc && i != 0; i -= cmo_page_sz)
+ plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_ACTIVE,
+ vpa + i - cmo_page_sz, 0);
+
+ return rc;
}
static inline long plpar_page_set_active(unsigned long vpa)
{
- return plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_ACTIVE, vpa, 0);
+ unsigned long cmo_page_sz = cmo_get_page_size();
+ long rc = 0;
+ int i;
+
+ for (i = 0; !rc && i < PAGE_SIZE; i += cmo_page_sz)
+ rc = plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_ACTIVE, vpa + i, 0);
+
+ for (i -= cmo_page_sz; rc && i != 0; i -= cmo_page_sz)
+ plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_LOANED,
+ vpa + i - cmo_page_sz, 0);
+
+ return rc;
}
extern void vpa_init(int cpu);
diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c
index 063a0d2fba3..3ce8a139b85 100644
--- a/arch/powerpc/platforms/pseries/setup.c
+++ b/arch/powerpc/platforms/pseries/setup.c
@@ -68,6 +68,9 @@
#include "plpar_wrappers.h"
#include "pseries.h"
+int CMO_PrPSP = -1;
+int CMO_SecPSP = -1;
+unsigned long CMO_PageSize = (ASM_CONST(1) << IOMMU_PAGE_SHIFT);
int fwnmi_active; /* TRUE if an FWNMI handler is present */
@@ -325,8 +328,7 @@ void pSeries_cmo_feature_init(void)
{
char *ptr, *key, *value, *end;
int call_status;
- int PrPSP = -1;
- int SecPSP = -1;
+ int page_order = IOMMU_PAGE_SHIFT;
pr_debug(" -> fw_cmo_feature_init()\n");
spin_lock(&rtas_data_buf_lock);
@@ -365,21 +367,31 @@ void pSeries_cmo_feature_init(void)
break;
}
- if (0 == strcmp(key, "PrPSP"))
- PrPSP = simple_strtol(value, NULL, 10);
+ if (0 == strcmp(key, "CMOPageSize"))
+ page_order = simple_strtol(value, NULL, 10);
+ else if (0 == strcmp(key, "PrPSP"))
+ CMO_PrPSP = simple_strtol(value, NULL, 10);
else if (0 == strcmp(key, "SecPSP"))
- SecPSP = simple_strtol(value, NULL, 10);
+ CMO_SecPSP = simple_strtol(value, NULL, 10);
value = key = ptr + 1;
}
ptr++;
}
- if (PrPSP != -1 || SecPSP != -1) {
+ /* Page size is returned as the power of 2 of the page size,
+ * convert to the page size in bytes before returning
+ */
+ CMO_PageSize = 1 << page_order;
+ pr_debug("CMO_PageSize = %lu\n", CMO_PageSize);
+
+ if (CMO_PrPSP != -1 || CMO_SecPSP != -1) {
pr_info("CMO enabled\n");
- pr_debug("CMO enabled, PrPSP=%d, SecPSP=%d\n", PrPSP, SecPSP);
+ pr_debug("CMO enabled, PrPSP=%d, SecPSP=%d\n", CMO_PrPSP,
+ CMO_SecPSP);
powerpc_firmware_features |= FW_FEATURE_CMO;
} else
- pr_debug("CMO not enabled, PrPSP=%d, SecPSP=%d\n", PrPSP, SecPSP);
+ pr_debug("CMO not enabled, PrPSP=%d, SecPSP=%d\n", CMO_PrPSP,
+ CMO_SecPSP);
spin_unlock(&rtas_data_buf_lock);
pr_debug(" <- fw_cmo_feature_init()\n");
}