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Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux 

Quoth Len:
 "This fixes a merge-window regression due to a conflict
  between error injection and preparation to remove atomicio.c
  Here we fix that regression and complete the removal
  of atomicio.c.

  This also re-orders some idle initialization code to
  complete the merge window series that allows cpuidle
  to cope with bringing processors on-line after boot."

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux:
  Use acpi_os_map_memory() instead of ioremap() in einj driver
  ACPI, APEI, EINJ, cleanup 0 vs NULL confusion
  ACPI, APEI, EINJ Allow empty Trigger Error Action Table
  thermal: Rename generate_netlink_event
  ACPI / PM: Add Sony Vaio VPCCW29FX to nonvs blacklist.
  ACPI: Remove ./drivers/acpi/atomicio.[ch]
  ACPI, APEI: Add RAM mapping support to ACPI
  ACPI, APEI: Add 64-bit read/write support for APEI on i386
  ACPI processor hotplug: Delay acpi_processor_start() call for hotplugged cores
  ACPI processor hotplug: Split up acpi_processor_add
hifive-unleashed-5.1
Linus Torvalds 2012-01-24 22:05:44 -08:00
parent a86b4ad6da eb7004e623
commit f8275f9694
14 changed files with 334 additions and 560 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
Documentation/thermal/sysfs-api.txt
View File

@ -284,7 +284,7 @@ method, the sys I/F structure will be built like this:
The framework includes a simple notification mechanism, in the form of a
netlink event. Netlink socket initialization is done during the _init_
of the framework. Drivers which intend to use the notification mechanism
just need to call generate_netlink_event() with two arguments viz
just need to call thermal_generate_netlink_event() with two arguments viz
(originator, event). Typically the originator will be an integer assigned
to a thermal_zone_device when it registers itself with the framework. The
event will be one of:{THERMAL_AUX0, THERMAL_AUX1, THERMAL_CRITICAL,

1
drivers/acpi/Makefile
View File

@ -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

35
drivers/acpi/apei/apei-base.c
View File

@ -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);

95
drivers/acpi/apei/einj.c
View File

@ -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);

422
drivers/acpi/atomicio.c
View File

@ -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);

152
drivers/acpi/osl.c
View File

@ -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)

154
drivers/acpi/processor_driver.c
View File

@ -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;
@ -495,48 +579,27 @@ static int __cpuinit acpi_processor_add(struct acpi_device *device)
goto err_free_cpumask;
}
#ifdef CONFIG_CPU_FREQ
acpi_processor_ppc_has_changed(pr, 0);
#endif
acpi_processor_get_throttling_info(pr);
acpi_processor_get_limit_info(pr);
/*
* Do not start hotplugged CPUs now, but when they
* are onlined the first time
*/
if (pr->flags.need_hotplug_init)
return 0;
if (!cpuidle_get_driver() || cpuidle_get_driver() == &acpi_idle_driver)
acpi_processor_power_init(pr, device);
/*
* Do not start hotplugged CPUs now, but when they
* are onlined the first time
*/
if (pr->flags.need_hotplug_init)
return 0;
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");
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);
@ -735,6 +798,17 @@ 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;
}

8
drivers/acpi/sleep.c
View File

@ -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"),

2
drivers/idle/intel_idle.c
View File

@ -527,7 +527,7 @@ int intel_idle_cpu_init(int cpu)
return 0;
}
EXPORT_SYMBOL_GPL(intel_idle_cpu_init);
static int __init intel_idle_init(void)
{

4
drivers/thermal/thermal_sys.c
View File

@ -1304,7 +1304,7 @@ static struct genl_multicast_group thermal_event_mcgrp = {
.name = THERMAL_GENL_MCAST_GROUP_NAME,
};
int generate_netlink_event(u32 orig, enum events event)
int thermal_generate_netlink_event(u32 orig, enum events event)
{
struct sk_buff *skb;
struct nlattr *attr;
@ -1363,7 +1363,7 @@ int generate_netlink_event(u32 orig, enum events event)
return result;
}
EXPORT_SYMBOL(generate_netlink_event);
EXPORT_SYMBOL(thermal_generate_netlink_event);
static int genetlink_init(void)
{

4
include/acpi/acpiosxf.h
View File

@ -218,9 +218,13 @@ acpi_status acpi_os_write_port(acpi_io_address address, u32 value, u32 width);
*/
acpi_status
acpi_os_read_memory(acpi_physical_address address, u32 * value, u32 width);
acpi_status
acpi_os_read_memory64(acpi_physical_address address, u64 *value, u32 width);
acpi_status
acpi_os_write_memory(acpi_physical_address address, u32 value, u32 width);
acpi_status
acpi_os_write_memory64(acpi_physical_address address, u64 value, u32 width);
/*
* Platform and hardware-independent PCI configuration space access

10
include/acpi/atomicio.h
View File

@ -1,10 +0,0 @@
#ifndef ACPI_ATOMIC_IO_H
#define ACPI_ATOMIC_IO_H
int acpi_pre_map_gar(struct acpi_generic_address *reg);
int acpi_post_unmap_gar(struct acpi_generic_address *reg);
int acpi_atomic_read(u64 *val, struct acpi_generic_address *reg);
int acpi_atomic_write(u64 val, struct acpi_generic_address *reg);
#endif

1
include/acpi/processor.h
View File

@ -195,6 +195,7 @@ struct acpi_processor_flags {
u8 has_cst:1;
u8 power_setup_done:1;
u8 bm_rld_set:1;
u8 need_hotplug_init:1;
};
struct acpi_processor {

4
include/linux/thermal.h
View File

@ -152,9 +152,9 @@ struct thermal_cooling_device *thermal_cooling_device_register(char *, void *,
void thermal_cooling_device_unregister(struct thermal_cooling_device *);
#ifdef CONFIG_NET
extern int generate_netlink_event(u32 orig, enum events event);
extern int thermal_generate_netlink_event(u32 orig, enum events event);
#else
static inline int generate_netlink_event(u32 orig, enum events event)
static inline int thermal_generate_netlink_event(u32 orig, enum events event)
{
return 0;
}