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yaml
---
r: 161923
b: refs/heads/master
c: e81995b
h: refs/heads/master
i:
  161921: e72e8dc
  161919: aade480
v: v3
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Bjorn Helgaas authored and Jesse Barnes committed Sep 15, 2009
1 parent 4d4edba commit cbfd247
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Showing 4 changed files with 8 additions and 88 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 11876e52e9148bf923795d6fcf8abed7f3662aaa
refs/heads/master: e81995bb1c0077a312cb621abc406a36f65a986a
9 changes: 4 additions & 5 deletions trunk/drivers/pci/hotplug/acpi_pcihp.c
Original file line number Diff line number Diff line change
Expand Up @@ -322,13 +322,12 @@ static acpi_status acpi_run_oshp(acpi_handle handle)
return status;
}

/* acpi_get_hp_params_from_firmware
/* pci_get_hp_params
*
* @dev - the pci_dev for which we want parameters
* @hpp - allocated by the caller
*/
int acpi_get_hp_params_from_firmware(struct pci_dev *dev,
struct hotplug_params *hpp)
int pci_get_hp_params(struct pci_dev *dev, struct hotplug_params *hpp)
{
acpi_status status;
acpi_handle handle, phandle;
Expand All @@ -345,7 +344,7 @@ int acpi_get_hp_params_from_firmware(struct pci_dev *dev,
* _HPP settings apply to all child buses, until another _HPP is
* encountered. If we don't find an _HPP for the input pci dev,
* look for it in the parent device scope since that would apply to
* this pci dev. If we don't find any _HPP, use hardcoded defaults
* this pci dev.
*/
while (handle) {
status = acpi_run_hpx(handle, hpp);
Expand All @@ -363,7 +362,7 @@ int acpi_get_hp_params_from_firmware(struct pci_dev *dev,
}
return -ENODEV;
}
EXPORT_SYMBOL_GPL(acpi_get_hp_params_from_firmware);
EXPORT_SYMBOL_GPL(pci_get_hp_params);

/**
* acpi_get_hp_hw_control_from_firmware
Expand Down
81 changes: 2 additions & 79 deletions trunk/drivers/pci/hotplug/acpiphp_glue.c
Original file line number Diff line number Diff line change
Expand Up @@ -271,29 +271,6 @@ static int detect_ejectable_slots(acpi_handle handle)
return found;
}


/* decode ACPI 2.0 _HPP hot plug parameters */
static void decode_hpp(struct pci_dev *dev, struct hotplug_params *hpp)
{
int ret;

ret = acpi_get_hp_params_from_firmware(dev, hpp);
if (ret || !hpp->t0 || (hpp->t0->revision > 1)) {
/* use default numbers */
printk(KERN_WARNING
"%s: Could not get hotplug parameters. Use defaults\n",
__func__);
hpp->t0 = &hpp->type0_data;
hpp->t0->revision = 0;
hpp->t0->cache_line_size = 0x10;
hpp->t0->latency_timer = 0x40;
hpp->t0->enable_serr = 0;
hpp->t0->enable_perr = 0;
}
}



/* initialize miscellaneous stuff for both root and PCI-to-PCI bridge */
static void init_bridge_misc(struct acpiphp_bridge *bridge)
{
Expand Down Expand Up @@ -1247,66 +1224,12 @@ static int acpiphp_check_bridge(struct acpiphp_bridge *bridge)
return retval;
}

static void program_hpp(struct pci_dev *dev, struct hotplug_params *hpp)
{
u16 pci_cmd, pci_bctl;
struct pci_dev *cdev;

/* Program hpp values for this device */
if (!(dev->hdr_type == PCI_HEADER_TYPE_NORMAL ||
(dev->hdr_type == PCI_HEADER_TYPE_BRIDGE &&
(dev->class >> 8) == PCI_CLASS_BRIDGE_PCI)))
return;

if ((dev->class >> 8) == PCI_CLASS_BRIDGE_HOST)
return;

pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE,
hpp->t0->cache_line_size);
pci_write_config_byte(dev, PCI_LATENCY_TIMER,
hpp->t0->latency_timer);
pci_read_config_word(dev, PCI_COMMAND, &pci_cmd);
if (hpp->t0->enable_serr)
pci_cmd |= PCI_COMMAND_SERR;
else
pci_cmd &= ~PCI_COMMAND_SERR;
if (hpp->t0->enable_perr)
pci_cmd |= PCI_COMMAND_PARITY;
else
pci_cmd &= ~PCI_COMMAND_PARITY;
pci_write_config_word(dev, PCI_COMMAND, pci_cmd);

/* Program bridge control value and child devices */
if ((dev->class >> 8) == PCI_CLASS_BRIDGE_PCI) {
pci_write_config_byte(dev, PCI_SEC_LATENCY_TIMER,
hpp->t0->latency_timer);
pci_read_config_word(dev, PCI_BRIDGE_CONTROL, &pci_bctl);
if (hpp->t0->enable_serr)
pci_bctl |= PCI_BRIDGE_CTL_SERR;
else
pci_bctl &= ~PCI_BRIDGE_CTL_SERR;
if (hpp->t0->enable_perr)
pci_bctl |= PCI_BRIDGE_CTL_PARITY;
else
pci_bctl &= ~PCI_BRIDGE_CTL_PARITY;
pci_write_config_word(dev, PCI_BRIDGE_CONTROL, pci_bctl);
if (dev->subordinate) {
list_for_each_entry(cdev, &dev->subordinate->devices,
bus_list)
program_hpp(cdev, hpp);
}
}
}

static void acpiphp_set_hpp_values(struct pci_bus *bus)
{
struct pci_dev *dev;
struct hotplug_params hpp;

list_for_each_entry(dev, &bus->devices, bus_list) {
decode_hpp(dev, &hpp);
program_hpp(dev, &hpp);
}
list_for_each_entry(dev, &bus->devices, bus_list)
pci_configure_slot(dev);
}

/*
Expand Down
4 changes: 1 addition & 3 deletions trunk/include/linux/pci_hotplug.h
Original file line number Diff line number Diff line change
Expand Up @@ -227,12 +227,10 @@ struct hotplug_params {
#ifdef CONFIG_ACPI
#include <acpi/acpi.h>
#include <acpi/acpi_bus.h>
int acpi_get_hp_params_from_firmware(struct pci_dev *dev,
struct hotplug_params *hpp);
int pci_get_hp_params(struct pci_dev *dev, struct hotplug_params *hpp);
int acpi_get_hp_hw_control_from_firmware(struct pci_dev *dev, u32 flags);
int acpi_pci_check_ejectable(struct pci_bus *pbus, acpi_handle handle);
int acpi_pci_detect_ejectable(acpi_handle handle);
#define pci_get_hp_params(dev, hpp) acpi_get_hp_params_from_firmware(dev, hpp)
#else
static inline int pci_get_hp_params(struct pci_dev *dev,
struct hotplug_params *hpp)
Expand Down

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