ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/arch/powerpc/platforms/ps3/htab.c b/marvell/linux/arch/powerpc/platforms/ps3/htab.c
new file mode 100644
index 0000000..7ddc7ec
--- /dev/null
+++ b/marvell/linux/arch/powerpc/platforms/ps3/htab.c
@@ -0,0 +1,195 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * PS3 pagetable management routines.
+ *
+ * Copyright (C) 2006 Sony Computer Entertainment Inc.
+ * Copyright 2006, 2007 Sony Corporation
+ */
+
+#include <linux/kernel.h>
+#include <linux/memblock.h>
+
+#include <asm/machdep.h>
+#include <asm/prom.h>
+#include <asm/udbg.h>
+#include <asm/lv1call.h>
+#include <asm/ps3fb.h>
+
+#define PS3_VERBOSE_RESULT
+#include "platform.h"
+
+/**
+ * enum lpar_vas_id - id of LPAR virtual address space.
+ * @lpar_vas_id_current: Current selected virtual address space
+ *
+ * Identify the target LPAR address space.
+ */
+
+enum ps3_lpar_vas_id {
+ PS3_LPAR_VAS_ID_CURRENT = 0,
+};
+
+
+static DEFINE_SPINLOCK(ps3_htab_lock);
+
+static long ps3_hpte_insert(unsigned long hpte_group, unsigned long vpn,
+ unsigned long pa, unsigned long rflags, unsigned long vflags,
+ int psize, int apsize, int ssize)
+{
+ int result;
+ u64 hpte_v, hpte_r;
+ u64 inserted_index;
+ u64 evicted_v, evicted_r;
+ u64 hpte_v_array[4], hpte_rs;
+ unsigned long flags;
+ long ret = -1;
+
+ /*
+ * lv1_insert_htab_entry() will search for victim
+ * entry in both primary and secondary pte group
+ */
+ vflags &= ~HPTE_V_SECONDARY;
+
+ hpte_v = hpte_encode_v(vpn, psize, apsize, ssize) | vflags | HPTE_V_VALID;
+ hpte_r = hpte_encode_r(ps3_mm_phys_to_lpar(pa), psize, apsize) | rflags;
+
+ spin_lock_irqsave(&ps3_htab_lock, flags);
+
+ /* talk hvc to replace entries BOLTED == 0 */
+ result = lv1_insert_htab_entry(PS3_LPAR_VAS_ID_CURRENT, hpte_group,
+ hpte_v, hpte_r,
+ HPTE_V_BOLTED, 0,
+ &inserted_index,
+ &evicted_v, &evicted_r);
+
+ if (result) {
+ /* all entries bolted !*/
+ pr_info("%s:result=%s vpn=%lx pa=%lx ix=%lx v=%llx r=%llx\n",
+ __func__, ps3_result(result), vpn, pa, hpte_group,
+ hpte_v, hpte_r);
+ BUG();
+ }
+
+ /*
+ * see if the entry is inserted into secondary pteg
+ */
+ result = lv1_read_htab_entries(PS3_LPAR_VAS_ID_CURRENT,
+ inserted_index & ~0x3UL,
+ &hpte_v_array[0], &hpte_v_array[1],
+ &hpte_v_array[2], &hpte_v_array[3],
+ &hpte_rs);
+ BUG_ON(result);
+
+ if (hpte_v_array[inserted_index % 4] & HPTE_V_SECONDARY)
+ ret = (inserted_index & 7) | (1 << 3);
+ else
+ ret = inserted_index & 7;
+
+ spin_unlock_irqrestore(&ps3_htab_lock, flags);
+
+ return ret;
+}
+
+static long ps3_hpte_remove(unsigned long hpte_group)
+{
+ panic("ps3_hpte_remove() not implemented");
+ return 0;
+}
+
+static long ps3_hpte_updatepp(unsigned long slot, unsigned long newpp,
+ unsigned long vpn, int psize, int apsize,
+ int ssize, unsigned long inv_flags)
+{
+ int result;
+ u64 hpte_v, want_v, hpte_rs;
+ u64 hpte_v_array[4];
+ unsigned long flags;
+ long ret;
+
+ want_v = hpte_encode_avpn(vpn, psize, ssize);
+
+ spin_lock_irqsave(&ps3_htab_lock, flags);
+
+ result = lv1_read_htab_entries(PS3_LPAR_VAS_ID_CURRENT, slot & ~0x3UL,
+ &hpte_v_array[0], &hpte_v_array[1],
+ &hpte_v_array[2], &hpte_v_array[3],
+ &hpte_rs);
+
+ if (result) {
+ pr_info("%s: result=%s read vpn=%lx slot=%lx psize=%d\n",
+ __func__, ps3_result(result), vpn, slot, psize);
+ BUG();
+ }
+
+ hpte_v = hpte_v_array[slot % 4];
+
+ /*
+ * As lv1_read_htab_entries() does not give us the RPN, we can
+ * not synthesize the new hpte_r value here, and therefore can
+ * not update the hpte with lv1_insert_htab_entry(), so we
+ * instead invalidate it and ask the caller to update it via
+ * ps3_hpte_insert() by returning a -1 value.
+ */
+ if (!HPTE_V_COMPARE(hpte_v, want_v) || !(hpte_v & HPTE_V_VALID)) {
+ /* not found */
+ ret = -1;
+ } else {
+ /* entry found, just invalidate it */
+ result = lv1_write_htab_entry(PS3_LPAR_VAS_ID_CURRENT,
+ slot, 0, 0);
+ ret = -1;
+ }
+
+ spin_unlock_irqrestore(&ps3_htab_lock, flags);
+ return ret;
+}
+
+static void ps3_hpte_updateboltedpp(unsigned long newpp, unsigned long ea,
+ int psize, int ssize)
+{
+ panic("ps3_hpte_updateboltedpp() not implemented");
+}
+
+static void ps3_hpte_invalidate(unsigned long slot, unsigned long vpn,
+ int psize, int apsize, int ssize, int local)
+{
+ unsigned long flags;
+ int result;
+
+ spin_lock_irqsave(&ps3_htab_lock, flags);
+
+ result = lv1_write_htab_entry(PS3_LPAR_VAS_ID_CURRENT, slot, 0, 0);
+
+ if (result) {
+ pr_info("%s: result=%s vpn=%lx slot=%lx psize=%d\n",
+ __func__, ps3_result(result), vpn, slot, psize);
+ BUG();
+ }
+
+ spin_unlock_irqrestore(&ps3_htab_lock, flags);
+}
+
+static void ps3_hpte_clear(void)
+{
+ unsigned long hpte_count = (1UL << ppc64_pft_size) >> 4;
+ u64 i;
+
+ for (i = 0; i < hpte_count; i++)
+ lv1_write_htab_entry(PS3_LPAR_VAS_ID_CURRENT, i, 0, 0);
+
+ ps3_mm_shutdown();
+ ps3_mm_vas_destroy();
+}
+
+void __init ps3_hpte_init(unsigned long htab_size)
+{
+ mmu_hash_ops.hpte_invalidate = ps3_hpte_invalidate;
+ mmu_hash_ops.hpte_updatepp = ps3_hpte_updatepp;
+ mmu_hash_ops.hpte_updateboltedpp = ps3_hpte_updateboltedpp;
+ mmu_hash_ops.hpte_insert = ps3_hpte_insert;
+ mmu_hash_ops.hpte_remove = ps3_hpte_remove;
+ mmu_hash_ops.hpte_clear_all = ps3_hpte_clear;
+
+ ppc64_pft_size = __ilog2(htab_size);
+}
+