Merge 3.3-rc2 into the driver-core-next branch.

This was done to resolve a merge and build problem with the
drivers/acpi/processor_driver.c file.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

7 files changed, 318 insertions, 530 deletions

diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
index c07f44f05f9d..1567028d2038 100644
--- a/drivers/acpi/Makefile
+++ b/drivers/acpi/Makefile
@@ -19,7 +19,6 @@ obj-y				+= acpi.o \
 
 # All the builtin files are in the "acpi." module_param namespace.
 acpi-y                          += osl.o utils.o reboot.o
-acpi-y                          += atomicio.o
 acpi-y                          += nvs.o
 
 # sleep related files
diff --git a/drivers/acpi/apei/apei-base.c b/drivers/acpi/apei/apei-base.c
index e45350cb6ac8..e5d53b7ddc7e 100644
--- a/drivers/acpi/apei/apei-base.c
+++ b/drivers/acpi/apei/apei-base.c
@@ -596,33 +596,19 @@ int apei_read(u64 *val, struct acpi_generic_address *reg)
 {
         int rc;
         u64 address;
-        u32 tmp, width = reg->bit_width;
         acpi_status status;
 
         rc = apei_check_gar(reg, &address);
         if (rc)
                 return rc;
 
-        if (width == 64)
-                width = 32;     /* Break into two 32-bit transfers */
-
         *val = 0;
         switch(reg->space_id) {
         case ACPI_ADR_SPACE_SYSTEM_MEMORY:
-                status = acpi_os_read_memory((acpi_physical_address)
-                                             address, &tmp, width);
+                status = acpi_os_read_memory64((acpi_physical_address)
+                                             address, val, reg->bit_width);
                 if (ACPI_FAILURE(status))
                         return -EIO;
-                *val = tmp;
-
-                if (reg->bit_width == 64) {
-                        /* Read the top 32 bits */
-                        status = acpi_os_read_memory((acpi_physical_address)
-                                                     (address + 4), &tmp, 32);
-                        if (ACPI_FAILURE(status))
-                                return -EIO;
-                        *val |= ((u64)tmp << 32);
-                }
                 break;
         case ACPI_ADR_SPACE_SYSTEM_IO:
                 status = acpi_os_read_port(address, (u32 *)val, reg->bit_width);
@@ -642,31 +628,18 @@ int apei_write(u64 val, struct acpi_generic_address *reg)
 {
         int rc;
         u64 address;
-        u32 width = reg->bit_width;
         acpi_status status;
 
         rc = apei_check_gar(reg, &address);
         if (rc)
                 return rc;
 
-        if (width == 64)
-                width = 32;     /* Break into two 32-bit transfers */
-
         switch (reg->space_id) {
         case ACPI_ADR_SPACE_SYSTEM_MEMORY:
-                status = acpi_os_write_memory((acpi_physical_address)
-                                              address, ACPI_LODWORD(val),
-                                              width);
+                status = acpi_os_write_memory64((acpi_physical_address)
+                                              address, val, reg->bit_width);
                 if (ACPI_FAILURE(status))
                         return -EIO;
-
-                if (reg->bit_width == 64) {
-                        status = acpi_os_write_memory((acpi_physical_address)
-                                                      (address + 4),
-                                                      ACPI_HIDWORD(val), 32);
-                        if (ACPI_FAILURE(status))
-                                return -EIO;
-                }
                 break;
         case ACPI_ADR_SPACE_SYSTEM_IO:
                 status = acpi_os_write_port(address, val, reg->bit_width);
diff --git a/drivers/acpi/apei/einj.c b/drivers/acpi/apei/einj.c
index 5b898d4dda99..4ca087dd5f4f 100644
--- a/drivers/acpi/apei/einj.c
+++ b/drivers/acpi/apei/einj.c
@@ -141,21 +141,6 @@ static DEFINE_MUTEX(einj_mutex);
 
 static void *einj_param;
 
-#ifndef readq
-static inline __u64 readq(volatile void __iomem *addr)
-{
-        return ((__u64)readl(addr+4) << 32) + readl(addr);
-}
-#endif
-
-#ifndef writeq
-static inline void writeq(__u64 val, volatile void __iomem *addr)
-{
-        writel(val, addr);
-        writel(val >> 32, addr+4);
-}
-#endif
-
 static void einj_exec_ctx_init(struct apei_exec_context *ctx)
 {
         apei_exec_ctx_init(ctx, einj_ins_type, ARRAY_SIZE(einj_ins_type),
@@ -204,22 +189,21 @@ static int einj_timedout(u64 *t)
 static void check_vendor_extension(u64 paddr,
                                    struct set_error_type_with_address *v5param)
 {
-        int     offset = readl(&v5param->vendor_extension);
+        int     offset = v5param->vendor_extension;
         struct  vendor_error_type_extension *v;
         u32     sbdf;
 
         if (!offset)
                 return;
-        v = ioremap(paddr + offset, sizeof(*v));
+        v = acpi_os_map_memory(paddr + offset, sizeof(*v));
         if (!v)
                 return;
-        sbdf = readl(&v->pcie_sbdf);
+        sbdf = v->pcie_sbdf;
         sprintf(vendor_dev, "%x:%x:%x.%x vendor_id=%x device_id=%x rev_id=%x\n",
                 sbdf >> 24, (sbdf >> 16) & 0xff,
                 (sbdf >> 11) & 0x1f, (sbdf >> 8) & 0x7,
-                 readw(&v->vendor_id), readw(&v->device_id),
-                readb(&v->rev_id));
-        iounmap(v);
+                 v->vendor_id, v->device_id, v->rev_id);
+        acpi_os_unmap_memory(v, sizeof(*v));
 }
 
 static void *einj_get_parameter_address(void)
@@ -247,7 +231,7 @@ static void *einj_get_parameter_address(void)
         if (paddrv5) {
                 struct set_error_type_with_address *v5param;
 
-                v5param = ioremap(paddrv5, sizeof(*v5param));
+                v5param = acpi_os_map_memory(paddrv5, sizeof(*v5param));
                 if (v5param) {
                         acpi5 = 1;
                         check_vendor_extension(paddrv5, v5param);
@@ -257,17 +241,17 @@ static void *einj_get_parameter_address(void)
         if (paddrv4) {
                 struct einj_parameter *v4param;
 
-                v4param = ioremap(paddrv4, sizeof(*v4param));
+                v4param = acpi_os_map_memory(paddrv4, sizeof(*v4param));
                 if (!v4param)
-                        return 0;
-                if (readq(&v4param->reserved1) || readq(&v4param->reserved2)) {
-                        iounmap(v4param);
-                        return 0;
+                        return NULL;
+                if (v4param->reserved1 || v4param->reserved2) {
+                        acpi_os_unmap_memory(v4param, sizeof(*v4param));
+                        return NULL;
                 }
                 return v4param;
         }
 
-        return 0;
+        return NULL;
 }
 
 /* do sanity check to trigger table */
@@ -276,7 +260,7 @@ static int einj_check_trigger_header(struct acpi_einj_trigger *trigger_tab)
         if (trigger_tab->header_size != sizeof(struct acpi_einj_trigger))
                 return -EINVAL;
         if (trigger_tab->table_size > PAGE_SIZE ||
-            trigger_tab->table_size <= trigger_tab->header_size)
+            trigger_tab->table_size < trigger_tab->header_size)
                 return -EINVAL;
         if (trigger_tab->entry_count !=
             (trigger_tab->table_size - trigger_tab->header_size) /
@@ -340,6 +324,11 @@ static int __einj_error_trigger(u64 trigger_paddr, u32 type,
                            "The trigger error action table is invalid\n");
                 goto out_rel_header;
         }
+
+        /* No action structures in the TRIGGER_ERROR table, nothing to do */
+        if (!trigger_tab->entry_count)
+                goto out_rel_header;
+
         rc = -EIO;
         table_size = trigger_tab->table_size;
         r = request_mem_region(trigger_paddr + sizeof(*trigger_tab),
@@ -435,41 +424,41 @@ static int __einj_error_inject(u32 type, u64 param1, u64 param2)
         if (acpi5) {
                 struct set_error_type_with_address *v5param = einj_param;
 
-                writel(type, &v5param->type);
+                v5param->type = type;
                 if (type & 0x80000000) {
                         switch (vendor_flags) {
                         case SETWA_FLAGS_APICID:
-                                writel(param1, &v5param->apicid);
+                                v5param->apicid = param1;
                                 break;
                         case SETWA_FLAGS_MEM:
-                                writeq(param1, &v5param->memory_address);
-                                writeq(param2, &v5param->memory_address_range);
+                                v5param->memory_address = param1;
+                                v5param->memory_address_range = param2;
                                 break;
                         case SETWA_FLAGS_PCIE_SBDF:
-                                writel(param1, &v5param->pcie_sbdf);
+                                v5param->pcie_sbdf = param1;
                                 break;
                         }
-                        writel(vendor_flags, &v5param->flags);
+                        v5param->flags = vendor_flags;
                 } else {
                         switch (type) {
                         case ACPI_EINJ_PROCESSOR_CORRECTABLE:
                         case ACPI_EINJ_PROCESSOR_UNCORRECTABLE:
                         case ACPI_EINJ_PROCESSOR_FATAL:
-                                writel(param1, &v5param->apicid);
-                                writel(SETWA_FLAGS_APICID, &v5param->flags);
+                                v5param->apicid = param1;
+                                v5param->flags = SETWA_FLAGS_APICID;
                                 break;
                         case ACPI_EINJ_MEMORY_CORRECTABLE:
                         case ACPI_EINJ_MEMORY_UNCORRECTABLE:
                         case ACPI_EINJ_MEMORY_FATAL:
-                                writeq(param1, &v5param->memory_address);
-                                writeq(param2, &v5param->memory_address_range);
-                                writel(SETWA_FLAGS_MEM, &v5param->flags);
+                                v5param->memory_address = param1;
+                                v5param->memory_address_range = param2;
+                                v5param->flags = SETWA_FLAGS_MEM;
                                 break;
                         case ACPI_EINJ_PCIX_CORRECTABLE:
                         case ACPI_EINJ_PCIX_UNCORRECTABLE:
                         case ACPI_EINJ_PCIX_FATAL:
-                                writel(param1, &v5param->pcie_sbdf);
-                                writel(SETWA_FLAGS_PCIE_SBDF, &v5param->flags);
+                                v5param->pcie_sbdf = param1;
+                                v5param->flags = SETWA_FLAGS_PCIE_SBDF;
                                 break;
                         }
                 }
@@ -479,8 +468,8 @@ static int __einj_error_inject(u32 type, u64 param1, u64 param2)
                         return rc;
                 if (einj_param) {
                         struct einj_parameter *v4param = einj_param;
-                        writeq(param1, &v4param->param1);
-                        writeq(param2, &v4param->param2);
+                        v4param->param1 = param1;
+                        v4param->param2 = param2;
                 }
         }
         rc = apei_exec_run(&ctx, ACPI_EINJ_EXECUTE_OPERATION);
@@ -731,8 +720,13 @@ static int __init einj_init(void)
         return 0;
 
 err_unmap:
-        if (einj_param)
-                iounmap(einj_param);
+        if (einj_param) {
+                acpi_size size = (acpi5) ?
+                        sizeof(struct set_error_type_with_address) :
+                        sizeof(struct einj_parameter);
+
+                acpi_os_unmap_memory(einj_param, size);
+        }
         apei_exec_post_unmap_gars(&ctx);
 err_release:
         apei_resources_release(&einj_resources);
@@ -748,8 +742,13 @@ static void __exit einj_exit(void)
 {
         struct apei_exec_context ctx;
 
-        if (einj_param)
-                iounmap(einj_param);
+        if (einj_param) {
+                acpi_size size = (acpi5) ?
+                        sizeof(struct set_error_type_with_address) :
+                        sizeof(struct einj_parameter);
+
+                acpi_os_unmap_memory(einj_param, size);
+        }
         einj_exec_ctx_init(&ctx);
         apei_exec_post_unmap_gars(&ctx);
         apei_resources_release(&einj_resources);
diff --git a/drivers/acpi/atomicio.c b/drivers/acpi/atomicio.c
deleted file mode 100644
index d4a5b3d3657b..000000000000
--- a/drivers/acpi/atomicio.c
+++ /dev/null
@@ -1,422 +0,0 @@
-/*
- * atomicio.c - ACPI IO memory pre-mapping/post-unmapping, then
- * accessing in atomic context.
- *
- * This is used for NMI handler to access IO memory area, because
- * ioremap/iounmap can not be used in NMI handler. The IO memory area
- * is pre-mapped in process context and accessed in NMI handler.
- *
- * Copyright (C) 2009-2010, Intel Corp.
- *      Author: Huang Ying <ying.huang@intel.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License version
- * 2 as published by the Free Software Foundation.
- *
- * 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/kernel.h>
-#include <linux/export.h>
-#include <linux/init.h>
-#include <linux/acpi.h>
-#include <linux/io.h>
-#include <linux/kref.h>
-#include <linux/rculist.h>
-#include <linux/interrupt.h>
-#include <linux/slab.h>
-#include <linux/mm.h>
-#include <linux/highmem.h>
-#include <acpi/atomicio.h>
-
-#define ACPI_PFX "ACPI: "
-
-static LIST_HEAD(acpi_iomaps);
-/*
- * Used for mutual exclusion between writers of acpi_iomaps list, for
- * synchronization between readers and writer, RCU is used.
- */
-static DEFINE_SPINLOCK(acpi_iomaps_lock);
-
-struct acpi_iomap {
-        struct list_head list;
-        void __iomem *vaddr;
-        unsigned long size;
-        phys_addr_t paddr;
-        struct kref ref;
-};
-
-/* acpi_iomaps_lock or RCU read lock must be held before calling */
-static struct acpi_iomap *__acpi_find_iomap(phys_addr_t paddr,
-                                            unsigned long size)
-{
-        struct acpi_iomap *map;
-
-        list_for_each_entry_rcu(map, &acpi_iomaps, list) {
-                if (map->paddr + map->size >= paddr + size &&
-                    map->paddr <= paddr)
-                        return map;
-        }
-        return NULL;
-}
-
-/*
- * Atomic "ioremap" used by NMI handler, if the specified IO memory
- * area is not pre-mapped, NULL will be returned.
- *
- * acpi_iomaps_lock or RCU read lock must be held before calling
- */
-static void __iomem *__acpi_ioremap_fast(phys_addr_t paddr,
-                                         unsigned long size)
-{
-        struct acpi_iomap *map;
-
-        map = __acpi_find_iomap(paddr, size/8);
-        if (map)
-                return map->vaddr + (paddr - map->paddr);
-        else
-                return NULL;
-}
-
-/* acpi_iomaps_lock must be held before calling */
-static void __iomem *__acpi_try_ioremap(phys_addr_t paddr,
-                                        unsigned long size)
-{
-        struct acpi_iomap *map;
-
-        map = __acpi_find_iomap(paddr, size);
-        if (map) {
-                kref_get(&map->ref);
-                return map->vaddr + (paddr - map->paddr);
-        } else
-                return NULL;
-}
-
-#ifndef CONFIG_IA64
-#define should_use_kmap(pfn)    page_is_ram(pfn)
-#else
-/* ioremap will take care of cache attributes */
-#define should_use_kmap(pfn)    0
-#endif
-
-static void __iomem *acpi_map(phys_addr_t pg_off, unsigned long pg_sz)
-{
-        unsigned long pfn;
-
-        pfn = pg_off >> PAGE_SHIFT;
-        if (should_use_kmap(pfn)) {
-                if (pg_sz > PAGE_SIZE)
-                        return NULL;
-                return (void __iomem __force *)kmap(pfn_to_page(pfn));
-        } else
-                return ioremap(pg_off, pg_sz);
-}
-
-static void acpi_unmap(phys_addr_t pg_off, void __iomem *vaddr)
-{
-        unsigned long pfn;
-
-        pfn = pg_off >> PAGE_SHIFT;
-        if (page_is_ram(pfn))
-                kunmap(pfn_to_page(pfn));
-        else
-                iounmap(vaddr);
-}
-
-/*
- * Used to pre-map the specified IO memory area. First try to find
- * whether the area is already pre-mapped, if it is, increase the
- * reference count (in __acpi_try_ioremap) and return; otherwise, do
- * the real ioremap, and add the mapping into acpi_iomaps list.
- */
-static void __iomem *acpi_pre_map(phys_addr_t paddr,
-                                  unsigned long size)
-{
-        void __iomem *vaddr;
-        struct acpi_iomap *map;
-        unsigned long pg_sz, flags;
-        phys_addr_t pg_off;
-
-        spin_lock_irqsave(&acpi_iomaps_lock, flags);
-        vaddr = __acpi_try_ioremap(paddr, size);
-        spin_unlock_irqrestore(&acpi_iomaps_lock, flags);
-        if (vaddr)
-                return vaddr;
-
-        pg_off = paddr & PAGE_MASK;
-        pg_sz = ((paddr + size + PAGE_SIZE - 1) & PAGE_MASK) - pg_off;
-        vaddr = acpi_map(pg_off, pg_sz);
-        if (!vaddr)
-                return NULL;
-        map = kmalloc(sizeof(*map), GFP_KERNEL);
-        if (!map)
-                goto err_unmap;
-        INIT_LIST_HEAD(&map->list);
-        map->paddr = pg_off;
-        map->size = pg_sz;
-        map->vaddr = vaddr;
-        kref_init(&map->ref);
-
-        spin_lock_irqsave(&acpi_iomaps_lock, flags);
-        vaddr = __acpi_try_ioremap(paddr, size);
-        if (vaddr) {
-                spin_unlock_irqrestore(&acpi_iomaps_lock, flags);
-                acpi_unmap(pg_off, map->vaddr);
-                kfree(map);
-                return vaddr;
-        }
-        list_add_tail_rcu(&map->list, &acpi_iomaps);
-        spin_unlock_irqrestore(&acpi_iomaps_lock, flags);
-
-        return map->vaddr + (paddr - map->paddr);
-err_unmap:
-        acpi_unmap(pg_off, vaddr);
-        return NULL;
-}
-
-/* acpi_iomaps_lock must be held before calling */
-static void __acpi_kref_del_iomap(struct kref *ref)
-{
-        struct acpi_iomap *map;
-
-        map = container_of(ref, struct acpi_iomap, ref);
-        list_del_rcu(&map->list);
-}
-
-/*
- * Used to post-unmap the specified IO memory area. The iounmap is
- * done only if the reference count goes zero.
- */
-static void acpi_post_unmap(phys_addr_t paddr, unsigned long size)
-{
-        struct acpi_iomap *map;
-        unsigned long flags;
-        int del;
-
-        spin_lock_irqsave(&acpi_iomaps_lock, flags);
-        map = __acpi_find_iomap(paddr, size);
-        BUG_ON(!map);
-        del = kref_put(&map->ref, __acpi_kref_del_iomap);
-        spin_unlock_irqrestore(&acpi_iomaps_lock, flags);
-
-        if (!del)
-                return;
-
-        synchronize_rcu();
-        acpi_unmap(map->paddr, map->vaddr);
-        kfree(map);
-}
-
-/* In NMI handler, should set silent = 1 */
-static int acpi_check_gar(struct acpi_generic_address *reg,
-                          u64 *paddr, int silent)
-{
-        u32 width, space_id;
-
-        width = reg->bit_width;
-        space_id = reg->space_id;
-        /* Handle possible alignment issues */
-        memcpy(paddr, &reg->address, sizeof(*paddr));
-        if (!*paddr) {
-                if (!silent)
-                        pr_warning(FW_BUG ACPI_PFX
-                        "Invalid physical address in GAR [0x%llx/%u/%u]\n",
-                                   *paddr, width, space_id);
-                return -EINVAL;
-        }
-
-        if ((width != 8) && (width != 16) && (width != 32) && (width != 64)) {
-                if (!silent)
-                        pr_warning(FW_BUG ACPI_PFX
-                                   "Invalid bit width in GAR [0x%llx/%u/%u]\n",
-                                   *paddr, width, space_id);
-                return -EINVAL;
-        }
-
-        if (space_id != ACPI_ADR_SPACE_SYSTEM_MEMORY &&
-            space_id != ACPI_ADR_SPACE_SYSTEM_IO) {
-                if (!silent)
-                        pr_warning(FW_BUG ACPI_PFX
-                        "Invalid address space type in GAR [0x%llx/%u/%u]\n",
-                                   *paddr, width, space_id);
-                return -EINVAL;
-        }
-
-        return 0;
-}
-
-/* Pre-map, working on GAR */
-int acpi_pre_map_gar(struct acpi_generic_address *reg)
-{
-        u64 paddr;
-        void __iomem *vaddr;
-        int rc;
-
-        if (reg->space_id != ACPI_ADR_SPACE_SYSTEM_MEMORY)
-                return 0;
-
-        rc = acpi_check_gar(reg, &paddr, 0);
-        if (rc)
-                return rc;
-
-        vaddr = acpi_pre_map(paddr, reg->bit_width / 8);
-        if (!vaddr)
-                return -EIO;
-
-        return 0;
-}
-EXPORT_SYMBOL_GPL(acpi_pre_map_gar);
-
-/* Post-unmap, working on GAR */
-int acpi_post_unmap_gar(struct acpi_generic_address *reg)
-{
-        u64 paddr;
-        int rc;
-
-        if (reg->space_id != ACPI_ADR_SPACE_SYSTEM_MEMORY)
-                return 0;
-
-        rc = acpi_check_gar(reg, &paddr, 0);
-        if (rc)
-                return rc;
-
-        acpi_post_unmap(paddr, reg->bit_width / 8);
-
-        return 0;
-}
-EXPORT_SYMBOL_GPL(acpi_post_unmap_gar);
-
-#ifdef readq
-static inline u64 read64(const volatile void __iomem *addr)
-{
-        return readq(addr);
-}
-#else
-static inline u64 read64(const volatile void __iomem *addr)
-{
-        u64 l, h;
-        l = readl(addr);
-        h = readl(addr+4);
-        return l | (h << 32);
-}
-#endif
-
-/*
- * Can be used in atomic (including NMI) or process context. RCU read
- * lock can only be released after the IO memory area accessing.
- */
-static int acpi_atomic_read_mem(u64 paddr, u64 *val, u32 width)
-{
-        void __iomem *addr;
-
-        rcu_read_lock();
-        addr = __acpi_ioremap_fast(paddr, width);
-        switch (width) {
-        case 8:
-                *val = readb(addr);
-                break;
-        case 16:
-                *val = readw(addr);
-                break;
-        case 32:
-                *val = readl(addr);
-                break;
-        case 64:
-                *val = read64(addr);
-                break;
-        default:
-                return -EINVAL;
-        }
-        rcu_read_unlock();
-
-        return 0;
-}
-
-#ifdef writeq
-static inline void write64(u64 val, volatile void __iomem *addr)
-{
-        writeq(val, addr);
-}
-#else
-static inline void write64(u64 val, volatile void __iomem *addr)
-{
-        writel(val, addr);
-        writel(val>>32, addr+4);
-}
-#endif
-
-static int acpi_atomic_write_mem(u64 paddr, u64 val, u32 width)
-{
-        void __iomem *addr;
-
-        rcu_read_lock();
-        addr = __acpi_ioremap_fast(paddr, width);
-        switch (width) {
-        case 8:
-                writeb(val, addr);
-                break;
-        case 16:
-                writew(val, addr);
-                break;
-        case 32:
-                writel(val, addr);
-                break;
-        case 64:
-                write64(val, addr);
-                break;
-        default:
-                return -EINVAL;
-        }
-        rcu_read_unlock();
-
-        return 0;
-}
-
-/* GAR accessing in atomic (including NMI) or process context */
-int acpi_atomic_read(u64 *val, struct acpi_generic_address *reg)
-{
-        u64 paddr;
-        int rc;
-
-        rc = acpi_check_gar(reg, &paddr, 1);
-        if (rc)
-                return rc;
-
-        *val = 0;
-        switch (reg->space_id) {
-        case ACPI_ADR_SPACE_SYSTEM_MEMORY:
-                return acpi_atomic_read_mem(paddr, val, reg->bit_width);
-        case ACPI_ADR_SPACE_SYSTEM_IO:
-                return acpi_os_read_port(paddr, (u32 *)val, reg->bit_width);
-        default:
-                return -EINVAL;
-        }
-}
-EXPORT_SYMBOL_GPL(acpi_atomic_read);
-
-int acpi_atomic_write(u64 val, struct acpi_generic_address *reg)
-{
-        u64 paddr;
-        int rc;
-
-        rc = acpi_check_gar(reg, &paddr, 1);
-        if (rc)
-                return rc;
-
-        switch (reg->space_id) {
-        case ACPI_ADR_SPACE_SYSTEM_MEMORY:
-                return acpi_atomic_write_mem(paddr, val, reg->bit_width);
-        case ACPI_ADR_SPACE_SYSTEM_IO:
-                return acpi_os_write_port(paddr, val, reg->bit_width);
-        default:
-                return -EINVAL;
-        }
-}
-EXPORT_SYMBOL_GPL(acpi_atomic_write);
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index fcc12d842bcc..412a1e04a922 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -31,6 +31,7 @@
 #include <linux/kernel.h>
 #include <linux/slab.h>
 #include <linux/mm.h>
+#include <linux/highmem.h>
 #include <linux/pci.h>
 #include <linux/interrupt.h>
 #include <linux/kmod.h>
@@ -321,6 +322,37 @@ acpi_map_lookup_virt(void __iomem *virt, acpi_size size)
         return NULL;
 }
 
+#ifndef CONFIG_IA64
+#define should_use_kmap(pfn)   page_is_ram(pfn)
+#else
+/* ioremap will take care of cache attributes */
+#define should_use_kmap(pfn)   0
+#endif
+
+static void __iomem *acpi_map(acpi_physical_address pg_off, unsigned long pg_sz)
+{
+        unsigned long pfn;
+
+        pfn = pg_off >> PAGE_SHIFT;
+        if (should_use_kmap(pfn)) {
+                if (pg_sz > PAGE_SIZE)
+                        return NULL;
+                return (void __iomem __force *)kmap(pfn_to_page(pfn));
+        } else
+                return acpi_os_ioremap(pg_off, pg_sz);
+}
+
+static void acpi_unmap(acpi_physical_address pg_off, void __iomem *vaddr)
+{
+        unsigned long pfn;
+
+        pfn = pg_off >> PAGE_SHIFT;
+        if (page_is_ram(pfn))
+                kunmap(pfn_to_page(pfn));
+        else
+                iounmap(vaddr);
+}
+
 void __iomem *__init_refok
 acpi_os_map_memory(acpi_physical_address phys, acpi_size size)
 {
@@ -353,7 +385,7 @@ acpi_os_map_memory(acpi_physical_address phys, acpi_size size)
 
         pg_off = round_down(phys, PAGE_SIZE);
         pg_sz = round_up(phys + size, PAGE_SIZE) - pg_off;
-        virt = acpi_os_ioremap(pg_off, pg_sz);
+        virt = acpi_map(pg_off, pg_sz);
         if (!virt) {
                 mutex_unlock(&acpi_ioremap_lock);
                 kfree(map);
@@ -384,7 +416,7 @@ static void acpi_os_map_cleanup(struct acpi_ioremap *map)
 {
         if (!map->refcount) {
                 synchronize_rcu();
-                iounmap(map->virt);
+                acpi_unmap(map->phys, map->virt);
                 kfree(map);
         }
 }
@@ -710,6 +742,67 @@ acpi_os_read_memory(acpi_physical_address phys_addr, u32 * value, u32 width)
         return AE_OK;
 }
 
+#ifdef readq
+static inline u64 read64(const volatile void __iomem *addr)
+{
+        return readq(addr);
+}
+#else
+static inline u64 read64(const volatile void __iomem *addr)
+{
+        u64 l, h;
+        l = readl(addr);
+        h = readl(addr+4);
+        return l | (h << 32);
+}
+#endif
+
+acpi_status
+acpi_os_read_memory64(acpi_physical_address phys_addr, u64 *value, u32 width)
+{
+        void __iomem *virt_addr;
+        unsigned int size = width / 8;
+        bool unmap = false;
+        u64 dummy;
+
+        rcu_read_lock();
+        virt_addr = acpi_map_vaddr_lookup(phys_addr, size);
+        if (!virt_addr) {
+                rcu_read_unlock();
+                virt_addr = acpi_os_ioremap(phys_addr, size);
+                if (!virt_addr)
+                        return AE_BAD_ADDRESS;
+                unmap = true;
+        }
+
+        if (!value)
+                value = &dummy;
+
+        switch (width) {
+        case 8:
+                *(u8 *) value = readb(virt_addr);
+                break;
+        case 16:
+                *(u16 *) value = readw(virt_addr);
+                break;
+        case 32:
+                *(u32 *) value = readl(virt_addr);
+                break;
+        case 64:
+                *(u64 *) value = read64(virt_addr);
+                break;
+        default:
+                BUG();
+        }
+
+        if (unmap)
+                iounmap(virt_addr);
+        else
+                rcu_read_unlock();
+
+        return AE_OK;
+}
+
 acpi_status
 acpi_os_write_memory(acpi_physical_address phys_addr, u32 value, u32 width)
 {
@@ -749,6 +842,61 @@ acpi_os_write_memory(acpi_physical_address phys_addr, u32 value, u32 width)
         return AE_OK;
 }
 
+#ifdef writeq
+static inline void write64(u64 val, volatile void __iomem *addr)
+{
+        writeq(val, addr);
+}
+#else
+static inline void write64(u64 val, volatile void __iomem *addr)
+{
+        writel(val, addr);
+        writel(val>>32, addr+4);
+}
+#endif
+
+acpi_status
+acpi_os_write_memory64(acpi_physical_address phys_addr, u64 value, u32 width)
+{
+        void __iomem *virt_addr;
+        unsigned int size = width / 8;
+        bool unmap = false;
+
+        rcu_read_lock();
+        virt_addr = acpi_map_vaddr_lookup(phys_addr, size);
+        if (!virt_addr) {
+                rcu_read_unlock();
+                virt_addr = acpi_os_ioremap(phys_addr, size);
+                if (!virt_addr)
+                        return AE_BAD_ADDRESS;
+                unmap = true;
+        }
+
+        switch (width) {
+        case 8:
+                writeb(value, virt_addr);
+                break;
+        case 16:
+                writew(value, virt_addr);
+                break;
+        case 32:
+                writel(value, virt_addr);
+                break;
+        case 64:
+                write64(value, virt_addr);
+                break;
+        default:
+                BUG();
+        }
+
+        if (unmap)
+                iounmap(virt_addr);
+        else
+                rcu_read_unlock();
+
+        return AE_OK;
+}
+
 acpi_status
 acpi_os_read_pci_configuration(struct acpi_pci_id * pci_id, u32 reg,
                                u64 *value, u32 width)
diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c
index e6920d0aca53..f289d2afbd4e 100644
--- a/drivers/acpi/processor_driver.c
+++ b/drivers/acpi/processor_driver.c
@@ -84,7 +84,7 @@ static int acpi_processor_remove(struct acpi_device *device, int type);
 static void acpi_processor_notify(struct acpi_device *device, u32 event);
 static acpi_status acpi_processor_hotadd_init(struct acpi_processor *pr);
 static int acpi_processor_handle_eject(struct acpi_processor *pr);
-
+static int acpi_processor_start(struct acpi_processor *pr);
 
 static const struct acpi_device_id processor_device_ids[] = {
         {ACPI_PROCESSOR_OBJECT_HID, 0},
@@ -423,10 +423,29 @@ static int acpi_cpu_soft_notify(struct notifier_block *nfb,
         struct acpi_processor *pr = per_cpu(processors, cpu);
 
         if (action == CPU_ONLINE && pr) {
-                acpi_processor_ppc_has_changed(pr, 0);
-                acpi_processor_hotplug(pr);
-                acpi_processor_reevaluate_tstate(pr, action);
-                acpi_processor_tstate_has_changed(pr);
+                /* CPU got physically hotplugged and onlined the first time:
+                 * Initialize missing things
+                 */
+                if (pr->flags.need_hotplug_init) {
+                        struct cpuidle_driver *idle_driver =
+                                cpuidle_get_driver();
+
+                        printk(KERN_INFO "Will online and init hotplugged "
+                               "CPU: %d\n", pr->id);
+                        WARN(acpi_processor_start(pr), "Failed to start CPU:"
+                                " %d\n", pr->id);
+                        pr->flags.need_hotplug_init = 0;
+                        if (idle_driver && !strcmp(idle_driver->name,
+                                                   "intel_idle")) {
+                                intel_idle_cpu_init(pr->id);
+                        }
+                /* Normal CPU soft online event */
+                } else {
+                        acpi_processor_ppc_has_changed(pr, 0);
+                        acpi_processor_cst_has_changed(pr);
+                        acpi_processor_reevaluate_tstate(pr, action);
+                        acpi_processor_tstate_has_changed(pr);
+                }
         }
         if (action == CPU_DEAD && pr) {
                 /* invalidate the flag.throttling after one CPU is offline */
@@ -440,6 +459,71 @@ static struct notifier_block acpi_cpu_notifier =
             .notifier_call = acpi_cpu_soft_notify,
 };
 
+/*
+ * acpi_processor_start() is called by the cpu_hotplug_notifier func:
+ * acpi_cpu_soft_notify(). Getting it __cpuinit{data} is difficult, the
+ * root cause seem to be that acpi_processor_uninstall_hotplug_notify()
+ * is in the module_exit (__exit) func. Allowing acpi_processor_start()
+ * to not be in __cpuinit section, but being called from __cpuinit funcs
+ * via __ref looks like the right thing to do here.
+ */
+static __ref int acpi_processor_start(struct acpi_processor *pr)
+{
+        struct acpi_device *device = per_cpu(processor_device_array, pr->id);
+        int result = 0;
+
+#ifdef CONFIG_CPU_FREQ
+        acpi_processor_ppc_has_changed(pr, 0);
+#endif
+        acpi_processor_get_throttling_info(pr);
+        acpi_processor_get_limit_info(pr);
+
+        if (!cpuidle_get_driver() || cpuidle_get_driver() == &acpi_idle_driver)
+                acpi_processor_power_init(pr, device);
+
+        pr->cdev = thermal_cooling_device_register("Processor", device,
+                                                   &processor_cooling_ops);
+        if (IS_ERR(pr->cdev)) {
+                result = PTR_ERR(pr->cdev);
+                goto err_power_exit;
+        }
+
+        dev_dbg(&device->dev, "registered as cooling_device%d\n",
+                pr->cdev->id);
+
+        result = sysfs_create_link(&device->dev.kobj,
+                                   &pr->cdev->device.kobj,
+                                   "thermal_cooling");
+        if (result) {
+                printk(KERN_ERR PREFIX "Create sysfs link\n");
+                goto err_thermal_unregister;
+        }
+        result = sysfs_create_link(&pr->cdev->device.kobj,
+                                   &device->dev.kobj,
+                                   "device");
+        if (result) {
+                printk(KERN_ERR PREFIX "Create sysfs link\n");
+                goto err_remove_sysfs_thermal;
+        }
+
+        return 0;
+
+err_remove_sysfs_thermal:
+        sysfs_remove_link(&device->dev.kobj, "thermal_cooling");
+err_thermal_unregister:
+        thermal_cooling_device_unregister(pr->cdev);
+err_power_exit:
+        acpi_processor_power_exit(pr, device);
+
+        return result;
+}
+
+/*
+ * Do not put anything in here which needs the core to be online.
+ * For example MSR access or setting up things which check for cpuinfo_x86
+ * (cpu_data(cpu)) values, like CPU feature flags, family, model, etc.
+ * Such things have to be put in and set up above in acpi_processor_start()
+ */
 static int __cpuinit acpi_processor_add(struct acpi_device *device)
 {
         struct acpi_processor *pr = NULL;
@@ -509,35 +593,23 @@ static int __cpuinit acpi_processor_add(struct acpi_device *device)
                                                 &processor_cooling_ops);
         if (IS_ERR(pr->cdev)) {
                 result = PTR_ERR(pr->cdev);
-                goto err_power_exit;
+                goto err_remove_sysfs;
         }
 
-        dev_dbg(&device->dev, "registered as cooling_device%d\n",
-                 pr->cdev->id);
+        /*
+         * Do not start hotplugged CPUs now, but when they
+         * are onlined the first time
+         */
+        if (pr->flags.need_hotplug_init)
+                return 0;
 
-        result = sysfs_create_link(&device->dev.kobj,
-                                   &pr->cdev->device.kobj,
-                                   "thermal_cooling");
-        if (result) {
-                printk(KERN_ERR PREFIX "Create sysfs link\n");
-                goto err_thermal_unregister;
-        }
-        result = sysfs_create_link(&pr->cdev->device.kobj,
-                                   &device->dev.kobj,
-                                   "device");
-        if (result) {
-                printk(KERN_ERR PREFIX "Create sysfs link\n");
+        result = acpi_processor_start(pr);
+        if (result)
                 goto err_remove_sysfs;
-        }
 
         return 0;
 
 err_remove_sysfs:
-        sysfs_remove_link(&device->dev.kobj, "thermal_cooling");
-err_thermal_unregister:
-        thermal_cooling_device_unregister(pr->cdev);
-err_power_exit:
-        acpi_processor_power_exit(pr, device);
         sysfs_remove_link(&device->dev.kobj, "sysdev");
 err_free_cpumask:
         free_cpumask_var(pr->throttling.shared_cpu_map);
@@ -736,6 +808,17 @@ static acpi_status acpi_processor_hotadd_init(struct acpi_processor *pr)
                 return AE_ERROR;
         }
 
+        /* CPU got hot-plugged, but cpu_data is not initialized yet
+         * Set flag to delay cpu_idle/throttling initialization
+         * in:
+         * acpi_processor_add()
+         *   acpi_processor_get_info()
+         * and do it when the CPU gets online the first time
+         * TBD: Cleanup above functions and try to do this more elegant.
+         */
+        printk(KERN_INFO "CPU %d got hotplugged\n", pr->id);
+        pr->flags.need_hotplug_init = 1;
+
         return AE_OK;
 }
 
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index 0a7ed69546ba..ca191ff97844 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -438,6 +438,14 @@ static struct dmi_system_id __initdata acpisleep_dmi_table[] = {
         },
         {
         .callback = init_nvs_nosave,
+        .ident = "Sony Vaio VPCCW29FX",
+        .matches = {
+                DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
+                DMI_MATCH(DMI_PRODUCT_NAME, "VPCCW29FX"),
+                },
+        },
+        {
+        .callback = init_nvs_nosave,
         .ident = "Averatec AV1020-ED2",
         .matches = {
                 DMI_MATCH(DMI_SYS_VENDOR, "AVERATEC"),