Merge branch 'x86-64'

* x86-64: (83 commits)
  [PATCH] x86_64: x86_64 stack usage debugging
  [PATCH] x86_64: (resend) x86_64 stack overflow debugging
  [PATCH] x86_64: msi_apic.c build fix
  [PATCH] x86_64: i386/x86-64 Add nmi watchdog support for new Intel CPUs
  [PATCH] x86_64: Avoid broadcasting NMI IPIs
  [PATCH] x86_64: fix apic error on bootup
  [PATCH] x86_64: enlarge window for stack growth
  [PATCH] x86_64: Minor string functions optimizations
  [PATCH] x86_64: Move export symbols to their C functions
  [PATCH] x86_64: Standardize i386/x86_64 handling of NMI_VECTOR
  [PATCH] x86_64: Fix modular pc speaker
  [PATCH] x86_64: remove sys32_ni_syscall()
  [PATCH] x86_64: Do not use -ffunction-sections for modules
  [PATCH] x86_64: Add cpu_relax to apic_wait_icr_idle
  [PATCH] x86_64: adjust kstack_depth_to_print default
  [PATCH] i386/x86-64: adjust /proc/interrupts column headings
  [PATCH] x86_64: Fix race in cpu_local_* on preemptible kernels
  [PATCH] x86_64: Fix fast check in safe_smp_processor_id
  [PATCH] x86_64: x86_64 setup.c - printing cmp related boottime information
  [PATCH] i386/x86-64/ia64: Move polling flag into thread_info_status
  ...

Manual resolve of trivial conflict in arch/i386/kernel/Makefile

1 files changed, 202 insertions, 0 deletions

diff --git a/arch/x86_64/kernel/tce.c b/arch/x86_64/kernel/tce.c
new file mode 100644
index 00000000000..8d4c67f61b8
--- /dev/null
+++ b/arch/x86_64/kernel/tce.c
@@ -0,0 +1,202 @@
+/*
+ * Derived from arch/powerpc/platforms/pseries/iommu.c
+ *
+ * Copyright (C) 2006 Jon Mason <jdmason@us.ibm.com>, IBM Corporation
+ * Copyright (C) 2006 Muli Ben-Yehuda <muli@il.ibm.com>, 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ */
+
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/spinlock.h>
+#include <linux/string.h>
+#include <linux/pci.h>
+#include <linux/dma-mapping.h>
+#include <linux/bootmem.h>
+#include <asm/tce.h>
+#include <asm/calgary.h>
+#include <asm/proto.h>
+
+/* flush a tce at 'tceaddr' to main memory */
+static inline void flush_tce(void* tceaddr)
+{
+	/* a single tce can't cross a cache line */
+	if (cpu_has_clflush)
+		asm volatile("clflush (%0)" :: "r" (tceaddr));
+	else
+		asm volatile("wbinvd":::"memory");
+}
+
+void tce_build(struct iommu_table *tbl, unsigned long index,
+	unsigned int npages, unsigned long uaddr, int direction)
+{
+	u64* tp;
+	u64 t;
+	u64 rpn;
+
+	t = (1 << TCE_READ_SHIFT);
+	if (direction != DMA_TO_DEVICE)
+		t |= (1 << TCE_WRITE_SHIFT);
+
+	tp = ((u64*)tbl->it_base) + index;
+
+	while (npages--) {
+		rpn = (virt_to_bus((void*)uaddr)) >> PAGE_SHIFT;
+		t &= ~TCE_RPN_MASK;
+		t |= (rpn << TCE_RPN_SHIFT);
+
+		*tp = cpu_to_be64(t);
+		flush_tce(tp);
+
+		uaddr += PAGE_SIZE;
+		tp++;
+	}
+}
+
+void tce_free(struct iommu_table *tbl, long index, unsigned int npages)
+{
+	u64* tp;
+
+	tp  = ((u64*)tbl->it_base) + index;
+
+	while (npages--) {
+		*tp = cpu_to_be64(0);
+		flush_tce(tp);
+		tp++;
+	}
+}
+
+static inline unsigned int table_size_to_number_of_entries(unsigned char size)
+{
+	/*
+	 * size is the order of the table, 0-7
+	 * smallest table is 8K entries, so shift result by 13 to
+	 * multiply by 8K
+	 */
+	return (1 << size) << 13;
+}
+
+static int tce_table_setparms(struct pci_dev *dev, struct iommu_table *tbl)
+{
+	unsigned int bitmapsz;
+	unsigned int tce_table_index;
+	unsigned long bmppages;
+	int ret;
+
+	tbl->it_busno = dev->bus->number;
+
+	/* set the tce table size - measured in entries */
+	tbl->it_size = table_size_to_number_of_entries(specified_table_size);
+
+	tce_table_index = bus_to_phb(tbl->it_busno);
+	tbl->it_base = (unsigned long)tce_table_kva[tce_table_index];
+	if (!tbl->it_base) {
+		printk(KERN_ERR "Calgary: iommu_table_setparms: "
+		       "no table allocated?!\n");
+		ret = -ENOMEM;
+		goto done;
+	}
+
+	/*
+	 * number of bytes needed for the bitmap size in number of
+	 * entries; we need one bit per entry
+	 */
+	bitmapsz = tbl->it_size / BITS_PER_BYTE;
+	bmppages = __get_free_pages(GFP_KERNEL, get_order(bitmapsz));
+	if (!bmppages) {
+		printk(KERN_ERR "Calgary: cannot allocate bitmap\n");
+		ret = -ENOMEM;
+		goto done;
+	}
+
+	tbl->it_map = (unsigned long*)bmppages;
+
+	memset(tbl->it_map, 0, bitmapsz);
+
+	tbl->it_hint = 0;
+
+	spin_lock_init(&tbl->it_lock);
+
+	return 0;
+
+done:
+	return ret;
+}
+
+int build_tce_table(struct pci_dev *dev, void __iomem *bbar)
+{
+	struct iommu_table *tbl;
+	int ret;
+
+	if (dev->sysdata) {
+		printk(KERN_ERR "Calgary: dev %p has sysdata %p\n",
+		       dev, dev->sysdata);
+		BUG();
+	}
+
+	tbl = kzalloc(sizeof(struct iommu_table), GFP_KERNEL);
+	if (!tbl) {
+		printk(KERN_ERR "Calgary: error allocating iommu_table\n");
+		ret = -ENOMEM;
+		goto done;
+	}
+
+	ret = tce_table_setparms(dev, tbl);
+	if (ret)
+		goto free_tbl;
+
+	tce_free(tbl, 0, tbl->it_size);
+
+	tbl->bbar = bbar;
+
+	/*
+	 * NUMA is already using the bus's sysdata pointer, so we use
+	 * the bus's pci_dev's sysdata instead.
+	 */
+	dev->sysdata = tbl;
+
+	return 0;
+
+free_tbl:
+	kfree(tbl);
+done:
+	return ret;
+}
+
+void* alloc_tce_table(void)
+{
+	unsigned int size;
+
+	size = table_size_to_number_of_entries(specified_table_size);
+	size *= TCE_ENTRY_SIZE;
+
+	return __alloc_bootmem_low(size, size, 0);
+}
+
+void free_tce_table(void *tbl)
+{
+	unsigned int size;
+
+	if (!tbl)
+		return;
+
+	size = table_size_to_number_of_entries(specified_table_size);
+	size *= TCE_ENTRY_SIZE;
+
+	free_bootmem(__pa(tbl), size);
+}