Use the generic pci_configure_slot() rather than the acpiphp-specific
decode_hpp() and program_hpp().
Unlike the previous acpiphp-specific code, pci_configure_slot() programs
PCIe settings when an _HPX method provides them, so acpiphp-managed PCIe
devices can now be configured.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@xxxxxx>
Reviewed-by: Kenji Kaneshige <kaneshige.kenji@xxxxxxxxxxxxxx>
Acked-by: Kenji Kaneshige <kaneshige.kenji@xxxxxxxxxxxxxx>
---
drivers/pci/hotplug/acpi_pcihp.c | 9 ++--
drivers/pci/hotplug/acpiphp_glue.c | 81 +-----------------------------------
include/linux/pci_hotplug.h | 4 --
3 files changed, 7 insertions(+), 87 deletions(-)
diff --git a/drivers/pci/hotplug/acpi_pcihp.c b/drivers/pci/hotplug/acpi_pcihp.c
index 14d2d8a..ee24de1 100644
--- a/drivers/pci/hotplug/acpi_pcihp.c
+++ b/drivers/pci/hotplug/acpi_pcihp.c
@@ -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;
@@ -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);
@@ -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
diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
index 14e6f1a..58d25a1 100644
--- a/drivers/pci/hotplug/acpiphp_glue.c
+++ b/drivers/pci/hotplug/acpiphp_glue.c
@@ -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)
{
@@ -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);
}
/*
diff --git a/include/linux/pci_hotplug.h b/include/linux/pci_hotplug.h
index 1cdef83..652ba79 100644
--- a/include/linux/pci_hotplug.h
+++ b/include/linux/pci_hotplug.h
@@ -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)
--
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