1 files changed, 0 insertions, 445 deletions
diff --git a/arch/powerpc/platforms/cell/beat_htab.c b/arch/powerpc/platforms/cell/beat_htab.c
deleted file mode 100644
index bee9232fe619..000000000000
--- a/arch/powerpc/platforms/cell/beat_htab.c
+++ /dev/null
@@ -1,445 +0,0 @@
-/*
- * "Cell Reference Set" HTAB support.
- *
- * (C) Copyright 2006-2007 TOSHIBA CORPORATION
- *
- * This code is based on arch/powerpc/platforms/pseries/lpar.c:
- *  Copyright (C) 2001 Todd Inglett, IBM Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#undef DEBUG_LOW
-
-#include <linux/kernel.h>
-#include <linux/spinlock.h>
-
-#include <asm/mmu.h>
-#include <asm/page.h>
-#include <asm/pgtable.h>
-#include <asm/machdep.h>
-#include <asm/udbg.h>
-
-#include "beat_wrapper.h"
-
-#ifdef DEBUG_LOW
-#define DBG_LOW(fmt...) do { udbg_printf(fmt); } while (0)
-#else
-#define DBG_LOW(fmt...) do { } while (0)
-#endif
-
-static DEFINE_RAW_SPINLOCK(beat_htab_lock);
-
-static inline unsigned int beat_read_mask(unsigned hpte_group)
-{
-	unsigned long rmask = 0;
-	u64 hpte_v[5];
-
-	beat_read_htab_entries(0, hpte_group + 0, hpte_v);
-	if (!(hpte_v[0] & HPTE_V_BOLTED))
-		rmask |= 0x8000;
-	if (!(hpte_v[1] & HPTE_V_BOLTED))
-		rmask |= 0x4000;
-	if (!(hpte_v[2] & HPTE_V_BOLTED))
-		rmask |= 0x2000;
-	if (!(hpte_v[3] & HPTE_V_BOLTED))
-		rmask |= 0x1000;
-	beat_read_htab_entries(0, hpte_group + 4, hpte_v);
-	if (!(hpte_v[0] & HPTE_V_BOLTED))
-		rmask |= 0x0800;
-	if (!(hpte_v[1] & HPTE_V_BOLTED))
-		rmask |= 0x0400;
-	if (!(hpte_v[2] & HPTE_V_BOLTED))
-		rmask |= 0x0200;
-	if (!(hpte_v[3] & HPTE_V_BOLTED))
-		rmask |= 0x0100;
-	hpte_group = ~hpte_group & (htab_hash_mask * HPTES_PER_GROUP);
-	beat_read_htab_entries(0, hpte_group + 0, hpte_v);
-	if (!(hpte_v[0] & HPTE_V_BOLTED))
-		rmask |= 0x80;
-	if (!(hpte_v[1] & HPTE_V_BOLTED))
-		rmask |= 0x40;
-	if (!(hpte_v[2] & HPTE_V_BOLTED))
-		rmask |= 0x20;
-	if (!(hpte_v[3] & HPTE_V_BOLTED))
-		rmask |= 0x10;
-	beat_read_htab_entries(0, hpte_group + 4, hpte_v);
-	if (!(hpte_v[0] & HPTE_V_BOLTED))
-		rmask |= 0x08;
-	if (!(hpte_v[1] & HPTE_V_BOLTED))
-		rmask |= 0x04;
-	if (!(hpte_v[2] & HPTE_V_BOLTED))
-		rmask |= 0x02;
-	if (!(hpte_v[3] & HPTE_V_BOLTED))
-		rmask |= 0x01;
-	return rmask;
-}
-
-static long beat_lpar_hpte_insert(unsigned long hpte_group,
-				  unsigned long vpn, unsigned long pa,
-				  unsigned long rflags, unsigned long vflags,
-				  int psize, int apsize, int ssize)
-{
-	unsigned long lpar_rc;
-	u64 hpte_v, hpte_r, slot;
-
-	if (vflags & HPTE_V_SECONDARY)
-		return -1;
-
-	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(vpn, psize, apsize, MMU_SEGSIZE_256M) |
-		vflags | HPTE_V_VALID;
-	hpte_r = hpte_encode_r(pa, psize, apsize) | rflags;
-
-	if (!(vflags & HPTE_V_BOLTED))
-		DBG_LOW(" hpte_v=%016lx, hpte_r=%016lx\n", hpte_v, hpte_r);
-
-	if (rflags & _PAGE_NO_CACHE)
-		hpte_r &= ~HPTE_R_M;
-
-	raw_spin_lock(&beat_htab_lock);
-	lpar_rc = beat_read_mask(hpte_group);
-	if (lpar_rc == 0) {
-		if (!(vflags & HPTE_V_BOLTED))
-			DBG_LOW(" full\n");
-		raw_spin_unlock(&beat_htab_lock);
-		return -1;
-	}
-
-	lpar_rc = beat_insert_htab_entry(0, hpte_group, lpar_rc << 48,
-		hpte_v, hpte_r, &slot);
-	raw_spin_unlock(&beat_htab_lock);
-
-	/*
-	 * 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 != 0)) {
-		if (!(vflags & HPTE_V_BOLTED))
-			DBG_LOW(" lpar err %lx\n", lpar_rc);
-		return -2;
-	}
-	if (!(vflags & HPTE_V_BOLTED))
-		DBG_LOW(" -> slot: %lx\n", slot);
-
-	/* We have to pass down the secondary bucket bit here as well */
-	return (slot ^ hpte_group) & 15;
-}
-
-static long beat_lpar_hpte_remove(unsigned long hpte_group)
-{
-	DBG_LOW("hpte_remove(group=%lx)\n", hpte_group);
-	return -1;
-}
-
-static unsigned long beat_lpar_hpte_getword0(unsigned long slot)
-{
-	unsigned long dword0;
-	unsigned long lpar_rc;
-	u64 dword[5];
-
-	lpar_rc = beat_read_htab_entries(0, slot & ~3UL, dword);
-
-	dword0 = dword[slot&3];
-
-	BUG_ON(lpar_rc != 0);
-
-	return dword0;
-}
-
-static void beat_lpar_hptab_clear(void)
-{
-	unsigned long size_bytes = 1UL << ppc64_pft_size;
-	unsigned long hpte_count = size_bytes >> 4;
-	int i;
-	u64 dummy0, dummy1;
-
-	/* TODO: Use bulk call */
-	for (i = 0; i < hpte_count; i++)
-		beat_write_htab_entry(0, i, 0, 0, -1UL, -1UL, &dummy0, &dummy1);
-}
-
-/*
- * NOTE: for updatepp ops we are fortunate that the linux "newpp" bits and
- * the low 3 bits of flags happen to line up.  So no transform is needed.
- * We can probably optimize here and assume the high bits of newpp are
- * already zero.  For now I am paranoid.
- */
-static long beat_lpar_hpte_updatepp(unsigned long slot,
-				    unsigned long newpp,
-				    unsigned long vpn,
-				    int psize, int apsize,
-				    int ssize, unsigned long flags)
-{
-	unsigned long lpar_rc;
-	u64 dummy0, dummy1;
-	unsigned long want_v;
-
-	want_v = hpte_encode_avpn(vpn, psize, MMU_SEGSIZE_256M);
-
-	DBG_LOW("    update: "
-		"avpnv=%016lx, slot=%016lx, psize: %d, newpp %016lx ... ",
-		want_v & HPTE_V_AVPN, slot, psize, newpp);
-
-	raw_spin_lock(&beat_htab_lock);
-	dummy0 = beat_lpar_hpte_getword0(slot);
-	if ((dummy0 & ~0x7FUL) != (want_v & ~0x7FUL)) {
-		DBG_LOW("not found !\n");
-		raw_spin_unlock(&beat_htab_lock);
-		return -1;
-	}
-
-	lpar_rc = beat_write_htab_entry(0, slot, 0, newpp, 0, 7, &dummy0,
-					&dummy1);
-	raw_spin_unlock(&beat_htab_lock);
-	if (lpar_rc != 0 || dummy0 == 0) {
-		DBG_LOW("not found !\n");
-		return -1;
-	}
-
-	DBG_LOW("ok %lx %lx\n", dummy0, dummy1);
-
-	BUG_ON(lpar_rc != 0);
-
-	return 0;
-}
-
-static long beat_lpar_hpte_find(unsigned long vpn, int psize)
-{
-	unsigned long hash;
-	unsigned long i, j;
-	long slot;
-	unsigned long want_v, hpte_v;
-
-	hash = hpt_hash(vpn, mmu_psize_defs[psize].shift, MMU_SEGSIZE_256M);
-	want_v = hpte_encode_avpn(vpn, psize, MMU_SEGSIZE_256M);
-
-	for (j = 0; j < 2; j++) {
-		slot = (hash & htab_hash_mask) * HPTES_PER_GROUP;
-		for (i = 0; i < HPTES_PER_GROUP; i++) {
-			hpte_v = beat_lpar_hpte_getword0(slot);
-
-			if (HPTE_V_COMPARE(hpte_v, want_v)
-			    && (hpte_v & HPTE_V_VALID)
-			    && (!!(hpte_v & HPTE_V_SECONDARY) == j)) {
-				/* HPTE matches */
-				if (j)
-					slot = -slot;
-				return slot;
-			}
-			++slot;
-		}
-		hash = ~hash;
-	}
-
-	return -1;
-}
-
-static void beat_lpar_hpte_updateboltedpp(unsigned long newpp,
-					  unsigned long ea,
-					  int psize, int ssize)
-{
-	unsigned long vpn;
-	unsigned long lpar_rc, slot, vsid;
-	u64 dummy0, dummy1;
-
-	vsid = get_kernel_vsid(ea, MMU_SEGSIZE_256M);
-	vpn = hpt_vpn(ea, vsid, MMU_SEGSIZE_256M);
-
-	raw_spin_lock(&beat_htab_lock);
-	slot = beat_lpar_hpte_find(vpn, psize);
-	BUG_ON(slot == -1);
-
-	lpar_rc = beat_write_htab_entry(0, slot, 0, newpp, 0, 7,
-		&dummy0, &dummy1);
-	raw_spin_unlock(&beat_htab_lock);
-
-	BUG_ON(lpar_rc != 0);
-}
-
-static void beat_lpar_hpte_invalidate(unsigned long slot, unsigned long vpn,
-				      int psize, int apsize,
-				      int ssize, int local)
-{
-	unsigned long want_v;
-	unsigned long lpar_rc;
-	u64 dummy1, dummy2;
-	unsigned long flags;
-
-	DBG_LOW("    inval : slot=%lx, va=%016lx, psize: %d, local: %d\n",
-		slot, va, psize, local);
-	want_v = hpte_encode_avpn(vpn, psize, MMU_SEGSIZE_256M);
-
-	raw_spin_lock_irqsave(&beat_htab_lock, flags);
-	dummy1 = beat_lpar_hpte_getword0(slot);
-
-	if ((dummy1 & ~0x7FUL) != (want_v & ~0x7FUL)) {
-		DBG_LOW("not found !\n");
-		raw_spin_unlock_irqrestore(&beat_htab_lock, flags);
-		return;
-	}
-
-	lpar_rc = beat_write_htab_entry(0, slot, 0, 0, HPTE_V_VALID, 0,
-		&dummy1, &dummy2);
-	raw_spin_unlock_irqrestore(&beat_htab_lock, flags);
-
-	BUG_ON(lpar_rc != 0);
-}
-
-void __init hpte_init_beat(void)
-{
-	ppc_md.hpte_invalidate	= beat_lpar_hpte_invalidate;
-	ppc_md.hpte_updatepp	= beat_lpar_hpte_updatepp;
-	ppc_md.hpte_updateboltedpp = beat_lpar_hpte_updateboltedpp;
-	ppc_md.hpte_insert	= beat_lpar_hpte_insert;
-	ppc_md.hpte_remove	= beat_lpar_hpte_remove;
-	ppc_md.hpte_clear_all	= beat_lpar_hptab_clear;
-}
-
-static long beat_lpar_hpte_insert_v3(unsigned long hpte_group,
-				  unsigned long vpn, unsigned long pa,
-				  unsigned long rflags, unsigned long vflags,
-				  int psize, int apsize, int ssize)
-{
-	unsigned long lpar_rc;
-	u64 hpte_v, hpte_r, slot;
-
-	if (vflags & HPTE_V_SECONDARY)
-		return -1;
-
-	if (!(vflags & HPTE_V_BOLTED))
-		DBG_LOW("hpte_insert(group=%lx, vpn=%016lx, pa=%016lx, "
-			"rflags=%lx, vflags=%lx, psize=%d)\n",
-		hpte_group, vpn, pa, rflags, vflags, psize);
-
-	hpte_v = hpte_encode_v(vpn, psize, apsize, MMU_SEGSIZE_256M) |
-		vflags | HPTE_V_VALID;
-	hpte_r = hpte_encode_r(pa, psize, apsize) | rflags;
-
-	if (!(vflags & HPTE_V_BOLTED))
-		DBG_LOW(" hpte_v=%016lx, hpte_r=%016lx\n", hpte_v, hpte_r);
-
-	if (rflags & _PAGE_NO_CACHE)
-		hpte_r &= ~HPTE_R_M;
-
-	/* insert into not-volted entry */
-	lpar_rc = beat_insert_htab_entry3(0, hpte_group, hpte_v, hpte_r,
-		HPTE_V_BOLTED, 0, &slot);
-	/*
-	 * 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 != 0)) {
-		if (!(vflags & HPTE_V_BOLTED))
-			DBG_LOW(" lpar err %lx\n", lpar_rc);
-		return -2;
-	}
-	if (!(vflags & HPTE_V_BOLTED))
-		DBG_LOW(" -> slot: %lx\n", slot);
-
-	/* We have to pass down the secondary bucket bit here as well */
-	return (slot ^ hpte_group) & 15;
-}
-
-/*
- * NOTE: for updatepp ops we are fortunate that the linux "newpp" bits and
- * the low 3 bits of flags happen to line up.  So no transform is needed.
- * We can probably optimize here and assume the high bits of newpp are
- * already zero.  For now I am paranoid.
- */
-static long beat_lpar_hpte_updatepp_v3(unsigned long slot,
-				       unsigned long newpp,
-				       unsigned long vpn,
-				       int psize, int apsize,
-				       int ssize, unsigned long flags)
-{
-	unsigned long lpar_rc;
-	unsigned long want_v;
-	unsigned long pss;
-
-	want_v = hpte_encode_avpn(vpn, psize, MMU_SEGSIZE_256M);
-	pss = (psize == MMU_PAGE_4K) ? -1UL : mmu_psize_defs[psize].penc[psize];
-
-	DBG_LOW("    update: "
-		"avpnv=%016lx, slot=%016lx, psize: %d, newpp %016lx ... ",
-		want_v & HPTE_V_AVPN, slot, psize, newpp);
-
-	lpar_rc = beat_update_htab_permission3(0, slot, want_v, pss, 7, newpp);
-
-	if (lpar_rc == 0xfffffff7) {
-		DBG_LOW("not found !\n");
-		return -1;
-	}
-
-	DBG_LOW("ok\n");
-
-	BUG_ON(lpar_rc != 0);
-
-	return 0;
-}
-
-static void beat_lpar_hpte_invalidate_v3(unsigned long slot, unsigned long vpn,
-					 int psize, int apsize,
-					 int ssize, int local)
-{
-	unsigned long want_v;
-	unsigned long lpar_rc;
-	unsigned long pss;
-
-	DBG_LOW("    inval : slot=%lx, vpn=%016lx, psize: %d, local: %d\n",
-		slot, vpn, psize, local);
-	want_v = hpte_encode_avpn(vpn, psize, MMU_SEGSIZE_256M);
-	pss = (psize == MMU_PAGE_4K) ? -1UL : mmu_psize_defs[psize].penc[psize];
-
-	lpar_rc = beat_invalidate_htab_entry3(0, slot, want_v, pss);
-
-	/* E_busy can be valid output: page may be already replaced */
-	BUG_ON(lpar_rc != 0 && lpar_rc != 0xfffffff7);
-}
-
-static int64_t _beat_lpar_hptab_clear_v3(void)
-{
-	return beat_clear_htab3(0);
-}
-
-static void beat_lpar_hptab_clear_v3(void)
-{
-	_beat_lpar_hptab_clear_v3();
-}
-
-void __init hpte_init_beat_v3(void)
-{
-	if (_beat_lpar_hptab_clear_v3() == 0) {
-		ppc_md.hpte_invalidate	= beat_lpar_hpte_invalidate_v3;
-		ppc_md.hpte_updatepp	= beat_lpar_hpte_updatepp_v3;
-		ppc_md.hpte_updateboltedpp = beat_lpar_hpte_updateboltedpp;
-		ppc_md.hpte_insert	= beat_lpar_hpte_insert_v3;
-		ppc_md.hpte_remove	= beat_lpar_hpte_remove;
-		ppc_md.hpte_clear_all	= beat_lpar_hptab_clear_v3;
-	} else {
-		ppc_md.hpte_invalidate	= beat_lpar_hpte_invalidate;
-		ppc_md.hpte_updatepp	= beat_lpar_hpte_updatepp;
-		ppc_md.hpte_updateboltedpp = beat_lpar_hpte_updateboltedpp;
-		ppc_md.hpte_insert	= beat_lpar_hpte_insert;
-		ppc_md.hpte_remove	= beat_lpar_hpte_remove;
-		ppc_md.hpte_clear_all	= beat_lpar_hptab_clear;
-	}
-}