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Merge branch 'acpi-resources' 

* acpi-resources: (23 commits)
  Merge branch 'pci/host-generic' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci into acpi-resources
  x86/irq, ACPI: Implement ACPI driver to support IOAPIC hotplug
  ACPI: Add interfaces to parse IOAPIC ID for IOAPIC hotplug
  x86/PCI: Refine the way to release PCI IRQ resources
  x86/PCI/ACPI: Use common ACPI resource interfaces to simplify implementation
  x86/PCI: Fix the range check for IO resources
  PCI: Use common resource list management code instead of private implementation
  resources: Move struct resource_list_entry from ACPI into resource core
  ACPI: Introduce helper function acpi_dev_filter_resource_type()
  ACPI: Add field offset to struct resource_list_entry
  ACPI: Translate resource into master side address for bridge window resources
  ACPI: Return translation offset when parsing ACPI address space resources
  ACPI: Enforce stricter checks for address space descriptors
  ACPI: Set flag IORESOURCE_UNSET for unassigned resources
  ACPI: Normalize return value of resource parser functions
  ACPI: Fix a bug in parsing ACPI Memory24 resource
  ACPI: Add prefetch decoding to the address space parser
  ACPI: Move the window flag logic to the combined parser
  ACPI: Unify the parsing of address_space and ext_address_space
  ACPI: Let the parser return false for disabled resources
  ...
hifive-unleashed-5.1
Rafael J. Wysocki 2015-02-10 16:05:16 +01:00
parent d232096802 5c493df25a
commit 8fbcf5ecb3
30 changed files with 879 additions and 456 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
arch/arm/kernel/bios32.c
View File

@ -422,17 +422,16 @@ static int pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
static int pcibios_init_resources(int busnr, struct pci_sys_data *sys)
{
int ret;
struct pci_host_bridge_window *window;
struct resource_entry *window;
if (list_empty(&sys->resources)) {
pci_add_resource_offset(&sys->resources,
&iomem_resource, sys->mem_offset);
}
list_for_each_entry(window, &sys->resources, list) {
resource_list_for_each_entry(window, &sys->resources)
if (resource_type(window->res) == IORESOURCE_IO)
return 0;
}
sys->io_res.start = (busnr * SZ_64K) ? : pcibios_min_io;
sys->io_res.end = (busnr + 1) * SZ_64K - 1;

2
arch/x86/include/asm/pci_x86.h
View File

@ -93,8 +93,6 @@ extern raw_spinlock_t pci_config_lock;
extern int (*pcibios_enable_irq)(struct pci_dev *dev);
extern void (*pcibios_disable_irq)(struct pci_dev *dev);
extern bool mp_should_keep_irq(struct device *dev);
struct pci_raw_ops {
int (*read)(unsigned int domain, unsigned int bus, unsigned int devfn,
int reg, int len, u32 *val);

299
arch/x86/pci/acpi.c
View File

@ -10,9 +10,6 @@
struct pci_root_info {
struct acpi_device *bridge;
char name[16];
unsigned int res_num;
struct resource *res;
resource_size_t *res_offset;
struct pci_sysdata sd;
#ifdef CONFIG_PCI_MMCONFIG
bool mcfg_added;
@ -218,130 +215,41 @@ static void teardown_mcfg_map(struct pci_root_info *info)
}
#endif
static acpi_status resource_to_addr(struct acpi_resource *resource,
struct acpi_resource_address64 *addr)
static void validate_resources(struct device *dev, struct list_head *crs_res,
unsigned long type)
{
acpi_status status;
struct acpi_resource_memory24 *memory24;
struct acpi_resource_memory32 *memory32;
struct acpi_resource_fixed_memory32 *fixed_memory32;
LIST_HEAD(list);
struct resource *res1, *res2, *root = NULL;
struct resource_entry *tmp, *entry, *entry2;
memset(addr, 0, sizeof(*addr));
switch (resource->type) {
case ACPI_RESOURCE_TYPE_MEMORY24:
memory24 = &resource->data.memory24;
addr->resource_type = ACPI_MEMORY_RANGE;
addr->address.minimum = memory24->minimum;
addr->address.address_length = memory24->address_length;
addr->address.maximum = addr->address.minimum + addr->address.address_length - 1;
return AE_OK;
case ACPI_RESOURCE_TYPE_MEMORY32:
memory32 = &resource->data.memory32;
addr->resource_type = ACPI_MEMORY_RANGE;
addr->address.minimum = memory32->minimum;
addr->address.address_length = memory32->address_length;
addr->address.maximum = addr->address.minimum + addr->address.address_length - 1;
return AE_OK;
case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
fixed_memory32 = &resource->data.fixed_memory32;
addr->resource_type = ACPI_MEMORY_RANGE;
addr->address.minimum = fixed_memory32->address;
addr->address.address_length = fixed_memory32->address_length;
addr->address.maximum = addr->address.minimum + addr->address.address_length - 1;
return AE_OK;
case ACPI_RESOURCE_TYPE_ADDRESS16:
case ACPI_RESOURCE_TYPE_ADDRESS32:
case ACPI_RESOURCE_TYPE_ADDRESS64:
status = acpi_resource_to_address64(resource, addr);
if (ACPI_SUCCESS(status) &&
(addr->resource_type == ACPI_MEMORY_RANGE ||
addr->resource_type == ACPI_IO_RANGE) &&
addr->address.address_length > 0) {
return AE_OK;
}
break;
}
return AE_ERROR;
}
BUG_ON((type & (IORESOURCE_MEM | IORESOURCE_IO)) == 0);
root = (type & IORESOURCE_MEM) ? &iomem_resource : &ioport_resource;
static acpi_status count_resource(struct acpi_resource *acpi_res, void *data)
{
struct pci_root_info *info = data;
struct acpi_resource_address64 addr;
acpi_status status;
list_splice_init(crs_res, &list);
resource_list_for_each_entry_safe(entry, tmp, &list) {
bool free = false;
resource_size_t end;
status = resource_to_addr(acpi_res, &addr);
if (ACPI_SUCCESS(status))
info->res_num++;
return AE_OK;
}
static acpi_status setup_resource(struct acpi_resource *acpi_res, void *data)
{
struct pci_root_info *info = data;
struct resource *res;
struct acpi_resource_address64 addr;
acpi_status status;
unsigned long flags;
u64 start, orig_end, end;
status = resource_to_addr(acpi_res, &addr);
if (!ACPI_SUCCESS(status))
return AE_OK;
if (addr.resource_type == ACPI_MEMORY_RANGE) {
flags = IORESOURCE_MEM;
if (addr.info.mem.caching == ACPI_PREFETCHABLE_MEMORY)
flags |= IORESOURCE_PREFETCH;
} else if (addr.resource_type == ACPI_IO_RANGE) {
flags = IORESOURCE_IO;
} else
return AE_OK;
start = addr.address.minimum + addr.address.translation_offset;
orig_end = end = addr.address.maximum + addr.address.translation_offset;
/* Exclude non-addressable range or non-addressable portion of range */
end = min(end, (u64)iomem_resource.end);
if (end <= start) {
dev_info(&info->bridge->dev,
"host bridge window [%#llx-%#llx] "
"(ignored, not CPU addressable)\n", start, orig_end);
return AE_OK;
} else if (orig_end != end) {
dev_info(&info->bridge->dev,
"host bridge window [%#llx-%#llx] "
"([%#llx-%#llx] ignored, not CPU addressable)\n",
start, orig_end, end + 1, orig_end);
}
res = &info->res[info->res_num];
res->name = info->name;
res->flags = flags;
res->start = start;
res->end = end;
info->res_offset[info->res_num] = addr.address.translation_offset;
info->res_num++;
if (!pci_use_crs)
dev_printk(KERN_DEBUG, &info->bridge->dev,
"host bridge window %pR (ignored)\n", res);
return AE_OK;
}
static void coalesce_windows(struct pci_root_info *info, unsigned long type)
{
int i, j;
struct resource *res1, *res2;
for (i = 0; i < info->res_num; i++) {
res1 = &info->res[i];
res1 = entry->res;
if (!(res1->flags & type))
continue;
goto next;
for (j = i + 1; j < info->res_num; j++) {
res2 = &info->res[j];
/* Exclude non-addressable range or non-addressable portion */
end = min(res1->end, root->end);
if (end <= res1->start) {
dev_info(dev, "host bridge window %pR (ignored, not CPU addressable)\n",
res1);
free = true;
goto next;
} else if (res1->end != end) {
dev_info(dev, "host bridge window %pR ([%#llx-%#llx] ignored, not CPU addressable)\n",
res1, (unsigned long long)end + 1,
(unsigned long long)res1->end);
res1->end = end;
}
resource_list_for_each_entry(entry2, crs_res) {
res2 = entry2->res;
if (!(res2->flags & type))
continue;
@ -353,118 +261,92 @@ static void coalesce_windows(struct pci_root_info *info, unsigned long type)
if (resource_overlaps(res1, res2)) {
res2->start = min(res1->start, res2->start);
res2->end = max(res1->end, res2->end);
dev_info(&info->bridge->dev,
"host bridge window expanded to %pR; %pR ignored\n",
dev_info(dev, "host bridge window expanded to %pR; %pR ignored\n",
res2, res1);
res1->flags = 0;
free = true;
goto next;
}
}
next:
resource_list_del(entry);
if (free)
resource_list_free_entry(entry);
else
resource_list_add_tail(entry, crs_res);
}
}
static void add_resources(struct pci_root_info *info,
struct list_head *resources)
struct list_head *resources,
struct list_head *crs_res)
{
int i;
struct resource *res, *root, *conflict;
struct resource_entry *entry, *tmp;
struct resource *res, *conflict, *root = NULL;
coalesce_windows(info, IORESOURCE_MEM);
coalesce_windows(info, IORESOURCE_IO);
for (i = 0; i < info->res_num; i++) {
res = &info->res[i];
validate_resources(&info->bridge->dev, crs_res, IORESOURCE_MEM);
validate_resources(&info->bridge->dev, crs_res, IORESOURCE_IO);
resource_list_for_each_entry_safe(entry, tmp, crs_res) {
res = entry->res;
if (res->flags & IORESOURCE_MEM)
root = &iomem_resource;
else if (res->flags & IORESOURCE_IO)
root = &ioport_resource;
else
continue;
BUG_ON(res);
conflict = insert_resource_conflict(root, res);
if (conflict)
if (conflict) {
dev_info(&info->bridge->dev,
"ignoring host bridge window %pR (conflicts with %s %pR)\n",
res, conflict->name, conflict);
else
pci_add_resource_offset(resources, res,
info->res_offset[i]);
}
}
static void free_pci_root_info_res(struct pci_root_info *info)
{
kfree(info->res);
info->res = NULL;
kfree(info->res_offset);
info->res_offset = NULL;
info->res_num = 0;
}
static void __release_pci_root_info(struct pci_root_info *info)
{
int i;
struct resource *res;
for (i = 0; i < info->res_num; i++) {
res = &info->res[i];
if (!res->parent)
continue;
if (!(res->flags & (IORESOURCE_MEM | IORESOURCE_IO)))
continue;
release_resource(res);
resource_list_destroy_entry(entry);
}
}
free_pci_root_info_res(info);
teardown_mcfg_map(info);
kfree(info);
list_splice_tail(crs_res, resources);
}
static void release_pci_root_info(struct pci_host_bridge *bridge)
{
struct resource *res;
struct resource_entry *entry;
struct pci_root_info *info = bridge->release_data;
__release_pci_root_info(info);
resource_list_for_each_entry(entry, &bridge->windows) {
res = entry->res;
if (res->parent &&
(res->flags & (IORESOURCE_MEM | IORESOURCE_IO)))
release_resource(res);
}
teardown_mcfg_map(info);
kfree(info);
}
static void probe_pci_root_info(struct pci_root_info *info,
struct acpi_device *device,
int busnum, int domain)
int busnum, int domain,
struct list_head *list)
{
size_t size;
int ret;
struct resource_entry *entry;
sprintf(info->name, "PCI Bus %04x:%02x", domain, busnum);
info->bridge = device;
info->res_num = 0;
acpi_walk_resources(device->handle, METHOD_NAME__CRS, count_resource,
info);
if (!info->res_num)
return;
size = sizeof(*info->res) * info->res_num;
info->res = kzalloc_node(size, GFP_KERNEL, info->sd.node);
if (!info->res) {
info->res_num = 0;
return;
}
size = sizeof(*info->res_offset) * info->res_num;
info->res_num = 0;
info->res_offset = kzalloc_node(size, GFP_KERNEL, info->sd.node);
if (!info->res_offset) {
kfree(info->res);
info->res = NULL;
return;
}
acpi_walk_resources(device->handle, METHOD_NAME__CRS, setup_resource,
info);
ret = acpi_dev_get_resources(device, list,
acpi_dev_filter_resource_type_cb,
(void *)(IORESOURCE_IO | IORESOURCE_MEM));
if (ret < 0)
dev_warn(&device->dev,
"failed to parse _CRS method, error code %d\n", ret);
else if (ret == 0)
dev_dbg(&device->dev,
"no IO and memory resources present in _CRS\n");
else
resource_list_for_each_entry(entry, list)
entry->res->name = info->name;
}
struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root)
@ -473,6 +355,8 @@ struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root)
struct pci_root_info *info;
int domain = root->segment;
int busnum = root->secondary.start;
struct resource_entry *res_entry;
LIST_HEAD(crs_res);
LIST_HEAD(resources);
struct pci_bus *bus;
struct pci_sysdata *sd;
@ -520,18 +404,22 @@ struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root)
memcpy(bus->sysdata, sd, sizeof(*sd));
kfree(info);
} else {
probe_pci_root_info(info, device, busnum, domain);
/* insert busn res at first */
pci_add_resource(&resources, &root->secondary);
/*
* _CRS with no apertures is normal, so only fall back to
* defaults or native bridge info if we're ignoring _CRS.
*/
if (pci_use_crs)
add_resources(info, &resources);
else {
free_pci_root_info_res(info);
probe_pci_root_info(info, device, busnum, domain, &crs_res);
if (pci_use_crs) {
add_resources(info, &resources, &crs_res);
} else {
resource_list_for_each_entry(res_entry, &crs_res)
dev_printk(KERN_DEBUG, &device->dev,
"host bridge window %pR (ignored)\n",
res_entry->res);
resource_list_free(&crs_res);
x86_pci_root_bus_resources(busnum, &resources);
}
@ -546,8 +434,9 @@ struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root)
to_pci_host_bridge(bus->bridge),
release_pci_root_info, info);
} else {
pci_free_resource_list(&resources);
__release_pci_root_info(info);
resource_list_free(&resources);
teardown_mcfg_map(info);
kfree(info);
}
}

4
arch/x86/pci/bus_numa.c
View File

@ -31,7 +31,7 @@ void x86_pci_root_bus_resources(int bus, struct list_head *resources)
{
struct pci_root_info *info = x86_find_pci_root_info(bus);
struct pci_root_res *root_res;
struct pci_host_bridge_window *window;
struct resource_entry *window;
bool found = false;
if (!info)
@ -41,7 +41,7 @@ void x86_pci_root_bus_resources(int bus, struct list_head *resources)
bus);
/* already added by acpi ? */
list_for_each_entry(window, resources, list)
resource_list_for_each_entry(window, resources)
if (window->res->flags & IORESOURCE_BUS) {
found = true;
break;

34
arch/x86/pci/common.c
View File

@ -513,6 +513,31 @@ void __init pcibios_set_cache_line_size(void)
}
}
/*
* Some device drivers assume dev->irq won't change after calling
* pci_disable_device(). So delay releasing of IRQ resource to driver
* unbinding time. Otherwise it will break PM subsystem and drivers
* like xen-pciback etc.
*/
static int pci_irq_notifier(struct notifier_block *nb, unsigned long action,
void *data)
{
struct pci_dev *dev = to_pci_dev(data);
if (action != BUS_NOTIFY_UNBOUND_DRIVER)
return NOTIFY_DONE;
if (pcibios_disable_irq)
pcibios_disable_irq(dev);
return NOTIFY_OK;
}
static struct notifier_block pci_irq_nb = {
.notifier_call = pci_irq_notifier,
.priority = INT_MIN,
};
int __init pcibios_init(void)
{
if (!raw_pci_ops) {
@ -525,6 +550,9 @@ int __init pcibios_init(void)
if (pci_bf_sort >= pci_force_bf)
pci_sort_breadthfirst();
bus_register_notifier(&pci_bus_type, &pci_irq_nb);
return 0;
}
@ -683,12 +711,6 @@ int pcibios_enable_device(struct pci_dev *dev, int mask)
return 0;
}
void pcibios_disable_device (struct pci_dev *dev)
{
if (!pci_dev_msi_enabled(dev) && pcibios_disable_irq)
pcibios_disable_irq(dev);
}
int pci_ext_cfg_avail(void)
{
if (raw_pci_ext_ops)

4
arch/x86/pci/intel_mid_pci.c
View File

@ -234,10 +234,10 @@ static int intel_mid_pci_irq_enable(struct pci_dev *dev)
static void intel_mid_pci_irq_disable(struct pci_dev *dev)
{
if (!mp_should_keep_irq(&dev->dev) && dev->irq_managed &&
dev->irq > 0) {
if (dev->irq_managed && dev->irq > 0) {
mp_unmap_irq(dev->irq);
dev->irq_managed = 0;
dev->irq = 0;
}
}

15
arch/x86/pci/irq.c
View File

@ -1256,22 +1256,9 @@ static int pirq_enable_irq(struct pci_dev *dev)
return 0;
}
bool mp_should_keep_irq(struct device *dev)
{
if (dev->power.is_prepared)
return true;
#ifdef CONFIG_PM
if (dev->power.runtime_status == RPM_SUSPENDING)
return true;
#endif
return false;
}
static void pirq_disable_irq(struct pci_dev *dev)
{
if (io_apic_assign_pci_irqs && !mp_should_keep_irq(&dev->dev) &&
dev->irq_managed && dev->irq) {
if (io_apic_assign_pci_irqs && dev->irq_managed && dev->irq) {
mp_unmap_irq(dev->irq);
dev->irq = 0;
dev->irq_managed = 0;

6
drivers/acpi/Kconfig
View File

@ -315,6 +315,12 @@ config ACPI_HOTPLUG_MEMORY
To compile this driver as a module, choose M here:
the module will be called acpi_memhotplug.
config ACPI_HOTPLUG_IOAPIC
bool
depends on PCI
depends on X86_IO_APIC
default y
config ACPI_SBS
tristate "Smart Battery System"
depends on X86

1
drivers/acpi/Makefile
View File

@ -70,6 +70,7 @@ obj-$(CONFIG_ACPI_PROCESSOR) += processor.o
obj-y += container.o
obj-$(CONFIG_ACPI_THERMAL) += thermal.o
obj-y += acpi_memhotplug.o
obj-$(CONFIG_ACPI_HOTPLUG_IOAPIC) += ioapic.o
obj-$(CONFIG_ACPI_BATTERY) += battery.o
obj-$(CONFIG_ACPI_SBS) += sbshc.o
obj-$(CONFIG_ACPI_SBS) += sbs.o

8
drivers/acpi/acpi_lpss.c
View File

@ -307,7 +307,7 @@ static int acpi_lpss_create_device(struct acpi_device *adev,
{
struct lpss_device_desc *dev_desc;
struct lpss_private_data *pdata;
struct resource_list_entry *rentry;
struct resource_entry *rentry;
struct list_head resource_list;
struct platform_device *pdev;
int ret;
@ -327,12 +327,12 @@ static int acpi_lpss_create_device(struct acpi_device *adev,
goto err_out;
list_for_each_entry(rentry, &resource_list, node)
if (resource_type(&rentry->res) == IORESOURCE_MEM) {
if (resource_type(rentry->res) == IORESOURCE_MEM) {
if (dev_desc->prv_size_override)
pdata->mmio_size = dev_desc->prv_size_override;
else
pdata->mmio_size = resource_size(&rentry->res);
pdata->mmio_base = ioremap(rentry->res.start,
pdata->mmio_size = resource_size(rentry->res);
pdata->mmio_base = ioremap(rentry->res->start,
pdata->mmio_size);
if (!pdata->mmio_base)
goto err_out;

4
drivers/acpi/acpi_platform.c
View File

@ -45,7 +45,7 @@ struct platform_device *acpi_create_platform_device(struct acpi_device *adev)
struct platform_device *pdev = NULL;
struct acpi_device *acpi_parent;
struct platform_device_info pdevinfo;
struct resource_list_entry *rentry;
struct resource_entry *rentry;
struct list_head resource_list;
struct resource *resources = NULL;
int count;
@ -71,7 +71,7 @@ struct platform_device *acpi_create_platform_device(struct acpi_device *adev)
}
count = 0;
list_for_each_entry(rentry, &resource_list, node)
resources[count++] = rentry->res;
resources[count++] = *rentry->res;
acpi_dev_free_resource_list(&resource_list);
}

7
drivers/acpi/internal.h
View File

@ -35,6 +35,13 @@ void acpi_int340x_thermal_init(void);
int acpi_sysfs_init(void);
void acpi_container_init(void);
void acpi_memory_hotplug_init(void);
#ifdef CONFIG_ACPI_HOTPLUG_IOAPIC
int acpi_ioapic_add(struct acpi_pci_root *root);
int acpi_ioapic_remove(struct acpi_pci_root *root);
#else
static inline int acpi_ioapic_add(struct acpi_pci_root *root) { return 0; }
static inline int acpi_ioapic_remove(struct acpi_pci_root *root) { return 0; }
#endif
#ifdef CONFIG_ACPI_DOCK
void register_dock_dependent_device(struct acpi_device *adev,
acpi_handle dshandle);

229
drivers/acpi/ioapic.c 100644
View File

@ -0,0 +1,229 @@
/*
* IOAPIC/IOxAPIC/IOSAPIC driver
*
* Copyright (C) 2009 Fujitsu Limited.
* (c) Copyright 2009 Hewlett-Packard Development Company, L.P.
*
* Copyright (C) 2014 Intel Corporation
*
* 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.
*
* Based on original drivers/pci/ioapic.c
* Yinghai Lu <yinghai@kernel.org>
* Jiang Liu <jiang.liu@intel.com>
*/
/*
* This driver manages I/O APICs added by hotplug after boot.
* We try to claim all I/O APIC devices, but those present at boot were
* registered when we parsed the ACPI MADT.
*/
#define pr_fmt(fmt) "ACPI : IOAPIC: " fmt
#include <linux/slab.h>
#include <linux/acpi.h>
#include <linux/pci.h>
#include <acpi/acpi.h>
struct acpi_pci_ioapic {
acpi_handle root_handle;
acpi_handle handle;
u32 gsi_base;
struct resource res;
struct pci_dev *pdev;
struct list_head list;
};
static LIST_HEAD(ioapic_list);
static DEFINE_MUTEX(ioapic_list_lock);
static acpi_status setup_res(struct acpi_resource *acpi_res, void *data)
{
struct resource *res = data;
struct resource_win win;
res->flags = 0;
if (acpi_dev_filter_resource_type(acpi_res, IORESOURCE_MEM) == 0)
return AE_OK;
if (!acpi_dev_resource_memory(acpi_res, res)) {
if (acpi_dev_resource_address_space(acpi_res, &win) ||
acpi_dev_resource_ext_address_space(acpi_res, &win))
*res = win.res;
}
if ((res->flags & IORESOURCE_PREFETCH) ||
(res->flags & IORESOURCE_DISABLED))
res->flags = 0;
return AE_CTRL_TERMINATE;
}
static bool acpi_is_ioapic(acpi_handle handle, char **type)
{
acpi_status status;
struct acpi_device_info *info;
char *hid = NULL;
bool match = false;
if (!acpi_has_method(handle, "_GSB"))
return false;
status = acpi_get_object_info(handle, &info);
if (ACPI_SUCCESS(status)) {
if (info->valid & ACPI_VALID_HID)
hid = info->hardware_id.string;
if (hid) {
if (strcmp(hid, "ACPI0009") == 0) {
*type = "IOxAPIC";
match = true;
} else if (strcmp(hid, "ACPI000A") == 0) {
*type = "IOAPIC";
match = true;
}
}
kfree(info);
}
return match;
}
static acpi_status handle_ioapic_add(acpi_handle handle, u32 lvl,
void *context, void **rv)
{
acpi_status status;
unsigned long long gsi_base;
struct acpi_pci_ioapic *ioapic;
struct pci_dev *dev = NULL;
struct resource *res = NULL;
char *type = NULL;
if (!acpi_is_ioapic(handle, &type))
return AE_OK;
mutex_lock(&ioapic_list_lock);
list_for_each_entry(ioapic, &ioapic_list, list)
if (ioapic->handle == handle) {
mutex_unlock(&ioapic_list_lock);
return AE_OK;
}
status = acpi_evaluate_integer(handle, "_GSB", NULL, &gsi_base);
if (ACPI_FAILURE(status)) {
acpi_handle_warn(handle, "failed to evaluate _GSB method\n");
goto exit;
}
ioapic = kzalloc(sizeof(*ioapic), GFP_KERNEL);
if (!ioapic) {
pr_err("cannot allocate memory for new IOAPIC\n");
goto exit;
} else {
ioapic->root_handle = (acpi_handle)context;
ioapic->handle = handle;
ioapic->gsi_base = (u32)gsi_base;
INIT_LIST_HEAD(&ioapic->list);
}
if (acpi_ioapic_registered(handle, (u32)gsi_base))
goto done;
dev = acpi_get_pci_dev(handle);
if (dev && pci_resource_len(dev, 0)) {
if (pci_enable_device(dev) < 0)
goto exit_put;
pci_set_master(dev);
if (pci_request_region(dev, 0, type))
goto exit_disable;
res = &dev->resource[0];
ioapic->pdev = dev;
} else {
pci_dev_put(dev);
dev = NULL;
res = &ioapic->res;
acpi_walk_resources(handle, METHOD_NAME__CRS, setup_res, res);
if (res->flags == 0) {
acpi_handle_warn(handle, "failed to get resource\n");
goto exit_free;
} else if (request_resource(&iomem_resource, res)) {
acpi_handle_warn(handle, "failed to insert resource\n");
goto exit_free;
}
}
if (acpi_register_ioapic(handle, res->start, (u32)gsi_base)) {
acpi_handle_warn(handle, "failed to register IOAPIC\n");
goto exit_release;
}
done:
list_add(&ioapic->list, &ioapic_list);
mutex_unlock(&ioapic_list_lock);
if (dev)
dev_info(&dev->dev, "%s at %pR, GSI %u\n",
type, res, (u32)gsi_base);
else
acpi_handle_info(handle, "%s at %pR, GSI %u\n",
type, res, (u32)gsi_base);
return AE_OK;
exit_release:
if (dev)
pci_release_region(dev, 0);
else
release_resource(res);
exit_disable:
if (dev)
pci_disable_device(dev);
exit_put:
pci_dev_put(dev);
exit_free:
kfree(ioapic);
exit:
mutex_unlock(&ioapic_list_lock);
*(acpi_status *)rv = AE_ERROR;
return AE_OK;
}
int acpi_ioapic_add(struct acpi_pci_root *root)
{
acpi_status status, retval = AE_OK;
status = acpi_walk_namespace(ACPI_TYPE_DEVICE, root->device->handle,
UINT_MAX, handle_ioapic_add, NULL,
root->device->handle, (void **)&retval);
return ACPI_SUCCESS(status) && ACPI_SUCCESS(retval) ? 0 : -ENODEV;
}
int acpi_ioapic_remove(struct acpi_pci_root *root)
{
int retval = 0;
struct acpi_pci_ioapic *ioapic, *tmp;
mutex_lock(&ioapic_list_lock);
list_for_each_entry_safe(ioapic, tmp, &ioapic_list, list) {
if (root->device->handle != ioapic->root_handle)
continue;
if (acpi_unregister_ioapic(ioapic->handle, ioapic->gsi_base))
retval = -EBUSY;
if (ioapic->pdev) {
pci_release_region(ioapic->pdev, 0);
pci_disable_device(ioapic->pdev);
pci_dev_put(ioapic->pdev);
} else if (ioapic->res.flags && ioapic->res.parent) {
release_resource(&ioapic->res);
}
list_del(&ioapic->list);
kfree(ioapic);
}
mutex_unlock(&ioapic_list_lock);
return retval;
}

9
drivers/acpi/pci_irq.c
View File

@ -485,14 +485,6 @@ void acpi_pci_irq_disable(struct pci_dev *dev)
if (!pin || !dev->irq_managed || dev->irq <= 0)
return;
/* Keep IOAPIC pin configuration when suspending */
if (dev->dev.power.is_prepared)
return;
#ifdef CONFIG_PM
if (dev->dev.power.runtime_status == RPM_SUSPENDING)
return;
#endif
entry = acpi_pci_irq_lookup(dev, pin);
if (!entry)
return;
@ -513,5 +505,6 @@ void acpi_pci_irq_disable(struct pci_dev *dev)
if (gsi >= 0) {
acpi_unregister_gsi(gsi);
dev->irq_managed = 0;
dev->irq = 0;
}
}

3
drivers/acpi/pci_root.c
View File

@ -621,6 +621,7 @@ static int acpi_pci_root_add(struct acpi_device *device,
if (hotadd) {
pcibios_resource_survey_bus(root->bus);
pci_assign_unassigned_root_bus_resources(root->bus);
acpi_ioapic_add(root);
}
pci_lock_rescan_remove();
@ -644,6 +645,8 @@ static void acpi_pci_root_remove(struct acpi_device *device)
pci_stop_root_bus(root->bus);
WARN_ON(acpi_ioapic_remove(root));
device_set_run_wake(root->bus->bridge, false);
pci_acpi_remove_bus_pm_notifier(device);

123
drivers/acpi/processor_core.c
View File

@ -4,6 +4,10 @@
*
* Alex Chiang <achiang@hp.com>
* - Unified x86/ia64 implementations
*
* I/O APIC hotplug support
* Yinghai Lu <yinghai@kernel.org>
* Jiang Liu <jiang.liu@intel.com>
*/
#include <linux/export.h>
#include <linux/acpi.h>
@ -12,6 +16,21 @@
#define _COMPONENT ACPI_PROCESSOR_COMPONENT
ACPI_MODULE_NAME("processor_core");
static struct acpi_table_madt *get_madt_table(void)
{
static struct acpi_table_madt *madt;
static int read_madt;
if (!read_madt) {
if (ACPI_FAILURE(acpi_get_table(ACPI_SIG_MADT, 0,
(struct acpi_table_header **)&madt)))
madt = NULL;
read_madt++;
}
return madt;
}
static int map_lapic_id(struct acpi_subtable_header *entry,
u32 acpi_id, int *apic_id)
{
@ -67,17 +86,10 @@ static int map_lsapic_id(struct acpi_subtable_header *entry,
static int map_madt_entry(int type, u32 acpi_id)
{
unsigned long madt_end, entry;
static struct acpi_table_madt *madt;
static int read_madt;
int phys_id = -1; /* CPU hardware ID */
struct acpi_table_madt *madt;
if (!read_madt) {
if (ACPI_FAILURE(acpi_get_table(ACPI_SIG_MADT, 0,
(struct acpi_table_header **)&madt)))
madt = NULL;
read_madt++;
}
madt = get_madt_table();
if (!madt)
return phys_id;
@ -203,3 +215,96 @@ int acpi_get_cpuid(acpi_handle handle, int type, u32 acpi_id)
return acpi_map_cpuid(phys_id, acpi_id);
}
EXPORT_SYMBOL_GPL(acpi_get_cpuid);
#ifdef CONFIG_ACPI_HOTPLUG_IOAPIC
static int get_ioapic_id(struct acpi_subtable_header *entry, u32 gsi_base,
u64 *phys_addr, int *ioapic_id)
{
struct acpi_madt_io_apic *ioapic = (struct acpi_madt_io_apic *)entry;
if (ioapic->global_irq_base != gsi_base)
return 0;
*phys_addr = ioapic->address;
*ioapic_id = ioapic->id;
return 1;
}
static int parse_madt_ioapic_entry(u32 gsi_base, u64 *phys_addr)
{
struct acpi_subtable_header *hdr;
unsigned long madt_end, entry;
struct acpi_table_madt *madt;
int apic_id = -1;
madt = get_madt_table();
if (!madt)
return apic_id;
entry = (unsigned long)madt;
madt_end = entry + madt->header.length;
/* Parse all entries looking for a match. */
entry += sizeof(struct acpi_table_madt);
while (entry + sizeof(struct acpi_subtable_header) < madt_end) {
hdr = (struct acpi_subtable_header *)entry;
if (hdr->type == ACPI_MADT_TYPE_IO_APIC &&
get_ioapic_id(hdr, gsi_base, phys_addr, &apic_id))
break;
else
entry += hdr->length;
}
return apic_id;
}
static int parse_mat_ioapic_entry(acpi_handle handle, u32 gsi_base,
u64 *phys_addr)
{
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
struct acpi_subtable_header *header;
union acpi_object *obj;
int apic_id = -1;
if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer)))
goto exit;
if (!buffer.length || !buffer.pointer)
goto exit;
obj = buffer.pointer;
if (obj->type != ACPI_TYPE_BUFFER ||
obj->buffer.length < sizeof(struct acpi_subtable_header))
goto exit;
header = (struct acpi_subtable_header *)obj->buffer.pointer;
if (header->type == ACPI_MADT_TYPE_IO_APIC)
get_ioapic_id(header, gsi_base, phys_addr, &apic_id);
exit:
kfree(buffer.pointer);
return apic_id;
}
/**
* acpi_get_ioapic_id - Get IOAPIC ID and physical address matching @gsi_base
* @handle: ACPI object for IOAPIC device
* @gsi_base: GSI base to match with
* @phys_addr: Pointer to store physical address of matching IOAPIC record
*
* Walk resources returned by ACPI_MAT method, then ACPI MADT table, to search
* for an ACPI IOAPIC record matching @gsi_base.
* Return IOAPIC id and store physical address in @phys_addr if found a match,
* otherwise return <0.
*/
int acpi_get_ioapic_id(acpi_handle handle, u32 gsi_base, u64 *phys_addr)
{
int apic_id;
apic_id = parse_mat_ioapic_entry(handle, gsi_base, phys_addr);
if (apic_id == -1)
apic_id = parse_madt_ioapic_entry(gsi_base, phys_addr);
return apic_id;
}
#endif /* CONFIG_ACPI_HOTPLUG_IOAPIC */

359
drivers/acpi/resource.c
View File

@ -34,21 +34,34 @@
#define valid_IRQ(i) (true)
#endif
static unsigned long acpi_dev_memresource_flags(u64 len, u8 write_protect,
bool window)
static bool acpi_dev_resource_len_valid(u64 start, u64 end, u64 len, bool io)
{
unsigned long flags = IORESOURCE_MEM;
u64 reslen = end - start + 1;
if (len == 0)
flags |= IORESOURCE_DISABLED;
/*
* CHECKME: len might be required to check versus a minimum
* length as well. 1 for io is fine, but for memory it does
* not make any sense at all.
*/
if (len && reslen && reslen == len && start <= end)
return true;
pr_info("ACPI: invalid or unassigned resource %s [%016llx - %016llx] length [%016llx]\n",
io ? "io" : "mem", start, end, len);
return false;
}
static void acpi_dev_memresource_flags(struct resource *res, u64 len,
u8 write_protect)
{
res->flags = IORESOURCE_MEM;
if (!acpi_dev_resource_len_valid(res->start, res->end, len, false))
res->flags |= IORESOURCE_DISABLED | IORESOURCE_UNSET;
if (write_protect == ACPI_READ_WRITE_MEMORY)
flags |= IORESOURCE_MEM_WRITEABLE;
if (window)
flags |= IORESOURCE_WINDOW;
return flags;
res->flags |= IORESOURCE_MEM_WRITEABLE;
}
static void acpi_dev_get_memresource(struct resource *res, u64 start, u64 len,
@ -56,7 +69,7 @@ static void acpi_dev_get_memresource(struct resource *res, u64 start, u64 len,
{
res->start = start;
res->end = start + len - 1;
res->flags = acpi_dev_memresource_flags(len, write_protect, false);
acpi_dev_memresource_flags(res, len, write_protect);
}
/**
@ -67,6 +80,11 @@ static void acpi_dev_get_memresource(struct resource *res, u64 start, u64 len,
* Check if the given ACPI resource object represents a memory resource and
* if that's the case, use the information in it to populate the generic
* resource object pointed to by @res.
*
* Return:
* 1) false with res->flags setting to zero: not the expected resource type
* 2) false with IORESOURCE_DISABLED in res->flags: valid unassigned resource
* 3) true: valid assigned resource
*/
bool acpi_dev_resource_memory(struct acpi_resource *ares, struct resource *res)
{
@ -77,60 +95,52 @@ bool acpi_dev_resource_memory(struct acpi_resource *ares, struct resource *res)
switch (ares->type) {
case ACPI_RESOURCE_TYPE_MEMORY24:
memory24 = &ares->data.memory24;
if (!memory24->minimum && !memory24->address_length)
return false;
acpi_dev_get_memresource(res, memory24->minimum,
memory24->address_length,
acpi_dev_get_memresource(res, memory24->minimum << 8,
memory24->address_length << 8,
memory24->write_protect);
break;
case ACPI_RESOURCE_TYPE_MEMORY32:
memory32 = &ares->data.memory32;
if (!memory32->minimum && !memory32->address_length)
return false;
acpi_dev_get_memresource(res, memory32->minimum,
memory32->address_length,
memory32->write_protect);
break;
case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
fixed_memory32 = &ares->data.fixed_memory32;
if (!fixed_memory32->address && !fixed_memory32->address_length)
return false;
acpi_dev_get_memresource(res, fixed_memory32->address,
fixed_memory32->address_length,
fixed_memory32->write_protect);
break;
default:
res->flags = 0;
return false;
}
return true;
return !(res->flags & IORESOURCE_DISABLED);
}
EXPORT_SYMBOL_GPL(acpi_dev_resource_memory);
static unsigned int acpi_dev_ioresource_flags(u64 start, u64 end, u8 io_decode,
bool window)
static void acpi_dev_ioresource_flags(struct resource *res, u64 len,
u8 io_decode)
{
int flags = IORESOURCE_IO;
res->flags = IORESOURCE_IO;
if (!acpi_dev_resource_len_valid(res->start, res->end, len, true))
res->flags |= IORESOURCE_DISABLED | IORESOURCE_UNSET;
if (res->end >= 0x10003)
res->flags |= IORESOURCE_DISABLED | IORESOURCE_UNSET;
if (io_decode == ACPI_DECODE_16)
flags |= IORESOURCE_IO_16BIT_ADDR;
if (start > end || end >= 0x10003)
flags |= IORESOURCE_DISABLED;
if (window)
flags |= IORESOURCE_WINDOW;
return flags;
res->flags |= IORESOURCE_IO_16BIT_ADDR;
}
static void acpi_dev_get_ioresource(struct resource *res, u64 start, u64 len,
u8 io_decode)
{
u64 end = start + len - 1;
res->start = start;
res->end = end;
res->flags = acpi_dev_ioresource_flags(start, end, io_decode, false);
res->end = start + len - 1;
acpi_dev_ioresource_flags(res, len, io_decode);
}
/**
@ -141,6 +151,11 @@ static void acpi_dev_get_ioresource(struct resource *res, u64 start, u64 len,
* Check if the given ACPI resource object represents an I/O resource and
* if that's the case, use the information in it to populate the generic
* resource object pointed to by @res.
*
* Return:
* 1) false with res->flags setting to zero: not the expected resource type
* 2) false with IORESOURCE_DISABLED in res->flags: valid unassigned resource
* 3) true: valid assigned resource
*/
bool acpi_dev_resource_io(struct acpi_resource *ares, struct resource *res)
{
@ -150,135 +165,143 @@ bool acpi_dev_resource_io(struct acpi_resource *ares, struct resource *res)
switch (ares->type) {
case ACPI_RESOURCE_TYPE_IO:
io = &ares->data.io;
if (!io->minimum && !io->address_length)
return false;
acpi_dev_get_ioresource(res, io->minimum,
io->address_length,
io->io_decode);
break;
case ACPI_RESOURCE_TYPE_FIXED_IO:
fixed_io = &ares->data.fixed_io;
if (!fixed_io->address && !fixed_io->address_length)
return false;
acpi_dev_get_ioresource(res, fixed_io->address,
fixed_io->address_length,
ACPI_DECODE_10);
break;
default:
res->flags = 0;
return false;
}
return true;
return !(res->flags & IORESOURCE_DISABLED);
}
EXPORT_SYMBOL_GPL(acpi_dev_resource_io);
/**
* acpi_dev_resource_address_space - Extract ACPI address space information.
* @ares: Input ACPI resource object.
* @res: Output generic resource object.
*
* Check if the given ACPI resource object represents an address space resource
* and if that's the case, use the information in it to populate the generic
* resource object pointed to by @res.
*/
bool acpi_dev_resource_address_space(struct acpi_resource *ares,
struct resource *res)
static bool acpi_decode_space(struct resource_win *win,
struct acpi_resource_address *addr,
struct acpi_address64_attribute *attr)
{
acpi_status status;
struct acpi_resource_address64 addr;
bool window;
u64 len;
u8 io_decode;
u8 iodec = attr->granularity == 0xfff ? ACPI_DECODE_10 : ACPI_DECODE_16;
bool wp = addr->info.mem.write_protect;
u64 len = attr->address_length;
struct resource *res = &win->res;
switch (ares->type) {
case ACPI_RESOURCE_TYPE_ADDRESS16:
case ACPI_RESOURCE_TYPE_ADDRESS32:
case ACPI_RESOURCE_TYPE_ADDRESS64:
break;
default:
return false;
/*
* Filter out invalid descriptor according to ACPI Spec 5.0, section
* 6.4.3.5 Address Space Resource Descriptors.
*/
if ((addr->min_address_fixed != addr->max_address_fixed && len) ||
(addr->min_address_fixed && addr->max_address_fixed && !len))
pr_debug("ACPI: Invalid address space min_addr_fix %d, max_addr_fix %d, len %llx\n",
addr->min_address_fixed, addr->max_address_fixed, len);
res->start = attr->minimum;
res->end = attr->maximum;
/*
* For bridges that translate addresses across the bridge,
* translation_offset is the offset that must be added to the
* address on the secondary side to obtain the address on the
* primary side. Non-bridge devices must list 0 for all Address
* Translation offset bits.
*/
if (addr->producer_consumer == ACPI_PRODUCER) {
res->start += attr->translation_offset;
res->end += attr->translation_offset;
} else if (attr->translation_offset) {
pr_debug("ACPI: translation_offset(%lld) is invalid for non-bridge device.\n",
attr->translation_offset);
}
status = acpi_resource_to_address64(ares, &addr);
if (ACPI_FAILURE(status))
return false;
res->start = addr.address.minimum;
res->end = addr.address.maximum;
window = addr.producer_consumer == ACPI_PRODUCER;
switch(addr.resource_type) {
switch (addr->resource_type) {
case ACPI_MEMORY_RANGE:
len = addr.address.maximum - addr.address.minimum + 1;
res->flags = acpi_dev_memresource_flags(len,
addr.info.mem.write_protect,
window);
acpi_dev_memresource_flags(res, len, wp);
break;
case ACPI_IO_RANGE:
io_decode = addr.address.granularity == 0xfff ?
ACPI_DECODE_10 : ACPI_DECODE_16;
res->flags = acpi_dev_ioresource_flags(addr.address.minimum,
addr.address.maximum,
io_decode, window);
acpi_dev_ioresource_flags(res, len, iodec);
break;
case ACPI_BUS_NUMBER_RANGE:
res->flags = IORESOURCE_BUS;
break;
default:
res->flags = 0;
return false;
}
return true;
win->offset = attr->translation_offset;
if (addr->producer_consumer == ACPI_PRODUCER)
res->flags |= IORESOURCE_WINDOW;
if (addr->info.mem.caching == ACPI_PREFETCHABLE_MEMORY)
res->flags |= IORESOURCE_PREFETCH;
return !(res->flags & IORESOURCE_DISABLED);
}
/**
* acpi_dev_resource_address_space - Extract ACPI address space information.
* @ares: Input ACPI resource object.
* @win: Output generic resource object.
*
* Check if the given ACPI resource object represents an address space resource
* and if that's the case, use the information in it to populate the generic
* resource object pointed to by @win.
*
* Return:
* 1) false with win->res.flags setting to zero: not the expected resource type
* 2) false with IORESOURCE_DISABLED in win->res.flags: valid unassigned
* resource
* 3) true: valid assigned resource
*/
bool acpi_dev_resource_address_space(struct acpi_resource *ares,
struct resource_win *win)
{
struct acpi_resource_address64 addr;
win->res.flags = 0;
if (ACPI_FAILURE(acpi_resource_to_address64(ares, &addr)))
return false;
return acpi_decode_space(win, (struct acpi_resource_address *)&addr,
&addr.address);
}
EXPORT_SYMBOL_GPL(acpi_dev_resource_address_space);
/**
* acpi_dev_resource_ext_address_space - Extract ACPI address space information.
* @ares: Input ACPI resource object.
* @res: Output generic resource object.
* @win: Output generic resource object.
*
* Check if the given ACPI resource object represents an extended address space
* resource and if that's the case, use the information in it to populate the
* generic resource object pointed to by @res.
* generic resource object pointed to by @win.
*
* Return:
* 1) false with win->res.flags setting to zero: not the expected resource type
* 2) false with IORESOURCE_DISABLED in win->res.flags: valid unassigned
* resource
* 3) true: valid assigned resource
*/
bool acpi_dev_resource_ext_address_space(struct acpi_resource *ares,
struct resource *res)
struct resource_win *win)
{
struct acpi_resource_extended_address64 *ext_addr;
bool window;
u64 len;
u8 io_decode;
win->res.flags = 0;
if (ares->type != ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64)
return false;
ext_addr = &ares->data.ext_address64;
res->start = ext_addr->address.minimum;
res->end = ext_addr->address.maximum;
window = ext_addr->producer_consumer == ACPI_PRODUCER;
switch(ext_addr->resource_type) {
case ACPI_MEMORY_RANGE:
len = ext_addr->address.maximum - ext_addr->address.minimum + 1;
res->flags = acpi_dev_memresource_flags(len,
ext_addr->info.mem.write_protect,
window);
break;
case ACPI_IO_RANGE:
io_decode = ext_addr->address.granularity == 0xfff ?
ACPI_DECODE_10 : ACPI_DECODE_16;
res->flags = acpi_dev_ioresource_flags(ext_addr->address.minimum,
ext_addr->address.maximum,
io_decode, window);
break;
case ACPI_BUS_NUMBER_RANGE:
res->flags = IORESOURCE_BUS;
break;
default:
res->flags = 0;
}
return true;
return acpi_decode_space(win, (struct acpi_resource_address *)ext_addr,
&ext_addr->address);
}
EXPORT_SYMBOL_GPL(acpi_dev_resource_ext_address_space);
@ -310,7 +333,7 @@ static void acpi_dev_irqresource_disabled(struct resource *res, u32 gsi)
{
res->start = gsi;
res->end = gsi;
res->flags = IORESOURCE_IRQ | IORESOURCE_DISABLED;
res->flags = IORESOURCE_IRQ | IORESOURCE_DISABLED | IORESOURCE_UNSET;
}
static void acpi_dev_get_irqresource(struct resource *res, u32 gsi,
@ -369,6 +392,11 @@ static void acpi_dev_get_irqresource(struct resource *res, u32 gsi,
* represented by the resource and populate the generic resource object pointed
* to by @res accordingly. If the registration of the GSI is not successful,
* IORESOURCE_DISABLED will be set it that object's flags.
*
* Return:
* 1) false with res->flags setting to zero: not the expected resource type
* 2) false with IORESOURCE_DISABLED in res->flags: valid unassigned resource
* 3) true: valid assigned resource
*/
bool acpi_dev_resource_interrupt(struct acpi_resource *ares, int index,
struct resource *res)
@ -402,6 +430,7 @@ bool acpi_dev_resource_interrupt(struct acpi_resource *ares, int index,
ext_irq->sharable, false);
break;
default:
res->flags = 0;
return false;
}
@ -415,12 +444,7 @@ EXPORT_SYMBOL_GPL(acpi_dev_resource_interrupt);
*/
void acpi_dev_free_resource_list(struct list_head *list)
{
struct resource_list_entry *rentry, *re;
list_for_each_entry_safe(rentry, re, list, node) {
list_del(&rentry->node);
kfree(rentry);
}
resource_list_free(list);
}
EXPORT_SYMBOL_GPL(acpi_dev_free_resource_list);
@ -432,18 +456,19 @@ struct res_proc_context {
int error;
};
static acpi_status acpi_dev_new_resource_entry(struct resource *r,
static acpi_status acpi_dev_new_resource_entry(struct resource_win *win,
struct res_proc_context *c)
{
struct resource_list_entry *rentry;
struct resource_entry *rentry;
rentry = kmalloc(sizeof(*rentry), GFP_KERNEL);
rentry = resource_list_create_entry(NULL, 0);
if (!rentry) {
c->error = -ENOMEM;
return AE_NO_MEMORY;
}
rentry->res = *r;
list_add_tail(&rentry->node, c->list);
*rentry->res = win->res;
rentry->offset = win->offset;
resource_list_add_tail(rentry, c->list);
c->count++;
return AE_OK;
}
@ -452,7 +477,8 @@ static acpi_status acpi_dev_process_resource(struct acpi_resource *ares,
void *context)
{
struct res_proc_context *c = context;
struct resource r;
struct resource_win win;
struct resource *res = &win.res;
int i;
if (c->preproc) {
@ -467,18 +493,18 @@ static acpi_status acpi_dev_process_resource(struct acpi_resource *ares,
}
}
memset(&r, 0, sizeof(r));
memset(&win, 0, sizeof(win));
if (acpi_dev_resource_memory(ares, &r)
|| acpi_dev_resource_io(ares, &r)
|| acpi_dev_resource_address_space(ares, &r)
|| acpi_dev_resource_ext_address_space(ares, &r))
return acpi_dev_new_resource_entry(&r, c);
if (acpi_dev_resource_memory(ares, res)
|| acpi_dev_resource_io(ares, res)
|| acpi_dev_resource_address_space(ares, &win)
|| acpi_dev_resource_ext_address_space(ares, &win))
return acpi_dev_new_resource_entry(&win, c);
for (i = 0; acpi_dev_resource_interrupt(ares, i, &r); i++) {
for (i = 0; acpi_dev_resource_interrupt(ares, i, res); i++) {
acpi_status status;
status = acpi_dev_new_resource_entry(&r, c);
status = acpi_dev_new_resource_entry(&win, c);
if (ACPI_FAILURE(status))
return status;
}
@ -503,7 +529,7 @@ static acpi_status acpi_dev_process_resource(struct acpi_resource *ares,
* returned as the final error code.
*
* The resultant struct resource objects are put on the list pointed to by
* @list, that must be empty initially, as members of struct resource_list_entry
* @list, that must be empty initially, as members of struct resource_entry
* objects. Callers of this routine should use %acpi_dev_free_resource_list() to
* free that list.
*
@ -538,3 +564,58 @@ int acpi_dev_get_resources(struct acpi_device *adev, struct list_head *list,
return c.count;
}
EXPORT_SYMBOL_GPL(acpi_dev_get_resources);
/**
* acpi_dev_filter_resource_type - Filter ACPI resource according to resource
* types
* @ares: Input ACPI resource object.
* @types: Valid resource types of IORESOURCE_XXX
*
* This is a hepler function to support acpi_dev_get_resources(), which filters
* ACPI resource objects according to resource types.
*/
int acpi_dev_filter_resource_type(struct acpi_resource *ares,
unsigned long types)
{
unsigned long type = 0;
switch (ares->type) {
case ACPI_RESOURCE_TYPE_MEMORY24:
case ACPI_RESOURCE_TYPE_MEMORY32:
case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
type = IORESOURCE_MEM;
break;
case ACPI_RESOURCE_TYPE_IO:
case ACPI_RESOURCE_TYPE_FIXED_IO:
type = IORESOURCE_IO;
break;
case ACPI_RESOURCE_TYPE_IRQ:
case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
type = IORESOURCE_IRQ;
break;
case ACPI_RESOURCE_TYPE_DMA:
case ACPI_RESOURCE_TYPE_FIXED_DMA:
type = IORESOURCE_DMA;
break;
case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
type = IORESOURCE_REG;
break;
case ACPI_RESOURCE_TYPE_ADDRESS16:
case ACPI_RESOURCE_TYPE_ADDRESS32:
case ACPI_RESOURCE_TYPE_ADDRESS64:
case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
if (ares->data.address.resource_type == ACPI_MEMORY_RANGE)
type = IORESOURCE_MEM;
else if (ares->data.address.resource_type == ACPI_IO_RANGE)
type = IORESOURCE_IO;
else if (ares->data.address.resource_type ==
ACPI_BUS_NUMBER_RANGE)
type = IORESOURCE_BUS;
break;
default:
break;
}
return (type & types) ? 0 : 1;
}
EXPORT_SYMBOL_GPL(acpi_dev_filter_resource_type);

10
drivers/dma/acpi-dma.c
View File

@ -43,7 +43,7 @@ static int acpi_dma_parse_resource_group(const struct acpi_csrt_group *grp,
{
const struct acpi_csrt_shared_info *si;
struct list_head resource_list;
struct resource_list_entry *rentry;
struct resource_entry *rentry;
resource_size_t mem = 0, irq = 0;
int ret;
@ -56,10 +56,10 @@ static int acpi_dma_parse_resource_group(const struct acpi_csrt_group *grp,
return 0;
list_for_each_entry(rentry, &resource_list, node) {
if (resource_type(&rentry->res) == IORESOURCE_MEM)
mem = rentry->res.start;
else if (resource_type(&rentry->res) == IORESOURCE_IRQ)
irq = rentry->res.start;
if (resource_type(rentry->res) == IORESOURCE_MEM)
mem = rentry->res->start;
else if (resource_type(rentry->res) == IORESOURCE_IRQ)
irq = rentry->res->start;
}
acpi_dev_free_resource_list(&resource_list);

3
drivers/of/of_pci.c
View File

@ -140,6 +140,7 @@ int of_pci_get_host_bridge_resources(struct device_node *dev,
unsigned char busno, unsigned char bus_max,
struct list_head *resources, resource_size_t *io_base)
{
struct resource_entry *window;
struct resource *res;
struct resource *bus_range;
struct of_pci_range range;
@ -225,6 +226,8 @@ int of_pci_get_host_bridge_resources(struct device_node *dev,
conversion_failed:
kfree(res);
parse_failed:
resource_list_for_each_entry(window, resources)
kfree(window->res);
pci_free_resource_list(resources);
return err;
}

18
drivers/pci/bus.c
View File

@ -20,17 +20,16 @@
void pci_add_resource_offset(struct list_head *resources, struct resource *res,
resource_size_t offset)
{
struct pci_host_bridge_window *window;
struct resource_entry *entry;
window = kzalloc(sizeof(struct pci_host_bridge_window), GFP_KERNEL);
if (!window) {
entry = resource_list_create_entry(res, 0);
if (!entry) {
printk(KERN_ERR "PCI: can't add host bridge window %pR\n", res);
return;
}
window->res = res;
window->offset = offset;
list_add_tail(&window->list, resources);
entry->offset = offset;
resource_list_add_tail(entry, resources);
}
EXPORT_SYMBOL(pci_add_resource_offset);
@ -42,12 +41,7 @@ EXPORT_SYMBOL(pci_add_resource);
void pci_free_resource_list(struct list_head *resources)
{
struct pci_host_bridge_window *window, *tmp;
list_for_each_entry_safe(window, tmp, resources, list) {
list_del(&window->list);
kfree(window);
}
resource_list_free(resources);
}
EXPORT_SYMBOL(pci_free_resource_list);

8
drivers/pci/host-bridge.c
View File

@ -35,10 +35,10 @@ void pcibios_resource_to_bus(struct pci_bus *bus, struct pci_bus_region *region,
struct resource *res)
{
struct pci_host_bridge *bridge = find_pci_host_bridge(bus);
struct pci_host_bridge_window *window;
struct resource_entry *window;
resource_size_t offset = 0;
list_for_each_entry(window, &bridge->windows, list) {
resource_list_for_each_entry(window, &bridge->windows) {
if (resource_contains(window->res, res)) {
offset = window->offset;
break;
@ -60,10 +60,10 @@ void pcibios_bus_to_resource(struct pci_bus *bus, struct resource *res,
struct pci_bus_region *region)
{
struct pci_host_bridge *bridge = find_pci_host_bridge(bus);
struct pci_host_bridge_window *window;
struct resource_entry *window;
resource_size_t offset = 0;
list_for_each_entry(window, &bridge->windows, list) {
resource_list_for_each_entry(window, &bridge->windows) {
struct pci_bus_region bus_region;
if (resource_type(res) != resource_type(window->res))

4
drivers/pci/host/pci-host-generic.c
View File

@ -149,14 +149,14 @@ static int gen_pci_parse_request_of_pci_ranges(struct gen_pci *pci)
struct device *dev = pci->host.dev.parent;
struct device_node *np = dev->of_node;
resource_size_t iobase;
struct pci_host_bridge_window *win;
struct resource_entry *win;
err = of_pci_get_host_bridge_resources(np, 0, 0xff, &pci->resources,
&iobase);
if (err)
return err;
list_for_each_entry(win, &pci->resources, list) {
resource_list_for_each_entry(win, &pci->resources) {
struct resource *parent, *res = win->res;
switch (resource_type(res)) {

4
drivers/pci/host/pci-xgene.c
View File

@ -401,11 +401,11 @@ static int xgene_pcie_map_ranges(struct xgene_pcie_port *port,
struct list_head *res,
resource_size_t io_base)
{
struct pci_host_bridge_window *window;
struct resource_entry *window;
struct device *dev = port->dev;
int ret;
list_for_each_entry(window, res, list) {
resource_list_for_each_entry(window, res) {
struct resource *res = window->res;
u64 restype = resource_type(res);

4
drivers/pci/host/pcie-xilinx.c
View File

@ -737,7 +737,7 @@ static int xilinx_pcie_parse_and_add_res(struct xilinx_pcie_port *port)
resource_size_t offset;
struct of_pci_range_parser parser;
struct of_pci_range range;
struct pci_host_bridge_window *win;
struct resource_entry *win;
int err = 0, mem_resno = 0;
/* Get the ranges */
@ -807,7 +807,7 @@ static int xilinx_pcie_parse_and_add_res(struct xilinx_pcie_port *port)
free_resources:
release_child_resources(&iomem_resource);
list_for_each_entry(win, &port->resources, list)
resource_list_for_each_entry(win, &port->resources)
devm_kfree(dev, win->res);
pci_free_resource_list(&port->resources);

10
drivers/pci/probe.c
View File

@ -1895,7 +1895,7 @@ struct pci_bus *pci_create_root_bus(struct device *parent, int bus,
int error;
struct pci_host_bridge *bridge;
struct pci_bus *b, *b2;
struct pci_host_bridge_window *window, *n;
struct resource_entry *window, *n;
struct resource *res;
resource_size_t offset;
char bus_addr[64];
@ -1959,8 +1959,8 @@ struct pci_bus *pci_create_root_bus(struct device *parent, int bus,
printk(KERN_INFO "PCI host bridge to bus %s\n", dev_name(&b->dev));
/* Add initial resources to the bus */
list_for_each_entry_safe(window, n, resources, list) {
list_move_tail(&window->list, &bridge->windows);
resource_list_for_each_entry_safe(window, n, resources) {
list_move_tail(&window->node, &bridge->windows);
res = window->res;
offset = window->offset;
if (res->flags & IORESOURCE_BUS)
@ -2060,12 +2060,12 @@ void pci_bus_release_busn_res(struct pci_bus *b)
struct pci_bus *pci_scan_root_bus(struct device *parent, int bus,
struct pci_ops *ops, void *sysdata, struct list_head *resources)
{
struct pci_host_bridge_window *window;
struct resource_entry *window;
bool found = false;
struct pci_bus *b;
int max;
list_for_each_entry(window, resources, list)
resource_list_for_each_entry(window, resources)
if (window->res->flags & IORESOURCE_BUS) {
found = true;
break;

29
drivers/pnp/pnpacpi/rsparser.c
View File

@ -180,20 +180,21 @@ static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res,
struct pnp_dev *dev = data;
struct acpi_resource_dma *dma;
struct acpi_resource_vendor_typed *vendor_typed;
struct resource r = {0};
struct resource_win win = {{0}, 0};
struct resource *r = &win.res;
int i, flags;
if (acpi_dev_resource_address_space(res, &r)
|| acpi_dev_resource_ext_address_space(res, &r)) {
pnp_add_resource(dev, &r);
if (acpi_dev_resource_address_space(res, &win)
|| acpi_dev_resource_ext_address_space(res, &win)) {
pnp_add_resource(dev, &win.res);
return AE_OK;
}
r.flags = 0;
if (acpi_dev_resource_interrupt(res, 0, &r)) {
pnpacpi_add_irqresource(dev, &r);
for (i = 1; acpi_dev_resource_interrupt(res, i, &r); i++)
pnpacpi_add_irqresource(dev, &r);
r->flags = 0;
if (acpi_dev_resource_interrupt(res, 0, r)) {
pnpacpi_add_irqresource(dev, r);
for (i = 1; acpi_dev_resource_interrupt(res, i, r); i++)
pnpacpi_add_irqresource(dev, r);
if (i > 1) {
/*
@ -209,7 +210,7 @@ static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res,
}
}
return AE_OK;
} else if (r.flags & IORESOURCE_DISABLED) {
} else if (r->flags & IORESOURCE_DISABLED) {
pnp_add_irq_resource(dev, 0, IORESOURCE_DISABLED);
return AE_OK;
}
@ -218,13 +219,13 @@ static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res,
case ACPI_RESOURCE_TYPE_MEMORY24:
case ACPI_RESOURCE_TYPE_MEMORY32:
case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
if (acpi_dev_resource_memory(res, &r))
pnp_add_resource(dev, &r);
if (acpi_dev_resource_memory(res, r))
pnp_add_resource(dev, r);
break;
case ACPI_RESOURCE_TYPE_IO:
case ACPI_RESOURCE_TYPE_FIXED_IO:
if (acpi_dev_resource_io(res, &r))
pnp_add_resource(dev, &r);
if (acpi_dev_resource_io(res, r))
pnp_add_resource(dev, r);
break;
case ACPI_RESOURCE_TYPE_DMA:
dma = &res->data.dma;

22
include/linux/acpi.h
View File

@ -27,6 +27,7 @@
#include <linux/errno.h>
#include <linux/ioport.h> /* for struct resource */
#include <linux/resource_ext.h>
#include <linux/device.h>
#include <linux/property.h>
@ -151,6 +152,10 @@ int acpi_map_cpu(acpi_handle handle, int physid, int *pcpu);
int acpi_unmap_cpu(int cpu);
#endif /* CONFIG_ACPI_HOTPLUG_CPU */
#ifdef CONFIG_ACPI_HOTPLUG_IOAPIC
int acpi_get_ioapic_id(acpi_handle handle, u32 gsi_base, u64 *phys_addr);
#endif
int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base);
int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base);
int acpi_ioapic_registered(acpi_handle handle, u32 gsi_base);
@ -288,22 +293,25 @@ extern int pnpacpi_disabled;
bool acpi_dev_resource_memory(struct acpi_resource *ares, struct resource *res);
bool acpi_dev_resource_io(struct acpi_resource *ares, struct resource *res);
bool acpi_dev_resource_address_space(struct acpi_resource *ares,
struct resource *res);
struct resource_win *win);
bool acpi_dev_resource_ext_address_space(struct acpi_resource *ares,
struct resource *res);
struct resource_win *win);
unsigned long acpi_dev_irq_flags(u8 triggering, u8 polarity, u8 shareable);
bool acpi_dev_resource_interrupt(struct acpi_resource *ares, int index,
struct resource *res);
struct resource_list_entry {
struct list_head node;
struct resource res;
};
void acpi_dev_free_resource_list(struct list_head *list);
int acpi_dev_get_resources(struct acpi_device *adev, struct list_head *list,
int (*preproc)(struct acpi_resource *, void *),
void *preproc_data);
int acpi_dev_filter_resource_type(struct acpi_resource *ares,
unsigned long types);
static inline int acpi_dev_filter_resource_type_cb(struct acpi_resource *ares,
void *arg)
{
return acpi_dev_filter_resource_type(ares, (unsigned long)arg);
}
int acpi_check_resource_conflict(const struct resource *res);

9
include/linux/pci.h
View File

@ -29,6 +29,7 @@
#include <linux/atomic.h>
#include <linux/device.h>
#include <linux/io.h>
#include <linux/resource_ext.h>
#include <uapi/linux/pci.h>
#include <linux/pci_ids.h>
@ -397,16 +398,10 @@ static inline int pci_channel_offline(struct pci_dev *pdev)
return (pdev->error_state != pci_channel_io_normal);
}
struct pci_host_bridge_window {
struct list_head list;
struct resource *res; /* host bridge aperture (CPU address) */
resource_size_t offset; /* bus address + offset = CPU address */
};
struct pci_host_bridge {
struct device dev;
struct pci_bus *bus; /* root bus */
struct list_head windows; /* pci_host_bridge_windows */
struct list_head windows; /* resource_entry */
void (*release_fn)(struct pci_host_bridge *);
void *release_data;
};

77
include/linux/resource_ext.h 100644
View File

@ -0,0 +1,77 @@
/*
* Copyright (C) 2015, Intel Corporation
* Author: Jiang Liu <jiang.liu@linux.intel.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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.
*/
#ifndef _LINUX_RESOURCE_EXT_H
#define _LINUX_RESOURCE_EXT_H
#include <linux/types.h>
#include <linux/list.h>
#include <linux/ioport.h>
#include <linux/slab.h>
/* Represent resource window for bridge devices */
struct resource_win {
struct resource res; /* In master (CPU) address space */
resource_size_t offset; /* Translation offset for bridge */
};
/*
* Common resource list management data structure and interfaces to support
* ACPI, PNP and PCI host bridge etc.
*/
struct resource_entry {
struct list_head node;
struct resource *res; /* In master (CPU) address space */
resource_size_t offset; /* Translation offset for bridge */
struct resource __res; /* Default storage for res */
};
extern struct resource_entry *
resource_list_create_entry(struct resource *res, size_t extra_size);
extern void resource_list_free(struct list_head *head);
static inline void resource_list_add(struct resource_entry *entry,
struct list_head *head)
{
list_add(&entry->node, head);
}
static inline void resource_list_add_tail(struct resource_entry *entry,
struct list_head *head)
{
list_add_tail(&entry->node, head);
}
static inline void resource_list_del(struct resource_entry *entry)
{
list_del(&entry->node);
}
static inline void resource_list_free_entry(struct resource_entry *entry)
{
kfree(entry);
}
static inline void
resource_list_destroy_entry(struct resource_entry *entry)
{
resource_list_del(entry);
resource_list_free_entry(entry);
}
#define resource_list_for_each_entry(entry, list) \
list_for_each_entry((entry), (list), node)
#define resource_list_for_each_entry_safe(entry, tmp, list) \
list_for_each_entry_safe((entry), (tmp), (list), node)
#endif /* _LINUX_RESOURCE_EXT_H */

25
kernel/resource.c
View File

@ -22,6 +22,7 @@
#include <linux/device.h>
#include <linux/pfn.h>
#include <linux/mm.h>
#include <linux/resource_ext.h>
#include <asm/io.h>
@ -1529,6 +1530,30 @@ int iomem_is_exclusive(u64 addr)
return err;
}
struct resource_entry *resource_list_create_entry(struct resource *res,
size_t extra_size)
{
struct resource_entry *entry;
entry = kzalloc(sizeof(*entry) + extra_size, GFP_KERNEL);
if (entry) {
INIT_LIST_HEAD(&entry->node);
entry->res = res ? res : &entry->__res;
}
return entry;
}
EXPORT_SYMBOL(resource_list_create_entry);
void resource_list_free(struct list_head *head)
{
struct resource_entry *entry, *tmp;
list_for_each_entry_safe(entry, tmp, head, node)
resource_list_destroy_entry(entry);
}
EXPORT_SYMBOL(resource_list_free);
static int __init strict_iomem(char *str)
{
if (strstr(str, "relaxed"))