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authorBjorn Helgaas <bjorn.helgaas@hp.com>2009-09-14 16:35:25 -0600
committerJesse Barnes <jbarnes@virtuousgeek.org>2009-09-14 17:39:09 -0700
commitd569c74d78ffcde2f163256e4da934ec3bacff0e (patch)
treea4652df85c274f60b5677ac266e88f99e990f87c /drivers/pci
parent8838400db5193c37588813c2eb1249b821781950 (diff)
PCI hotplug: pciehp: use generic pci_configure_slot()
Use the generic pci_configure_slot() rather than the PCIe-specific program_fw_provided_values(). Unlike the previous pciehp-specific code, we now walk through subordinate devices even if there are no settings for the parent. This should be harmless because we won't change anything unless we discover firmware settings farther down. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Reviewed-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Acked-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'drivers/pci')
-rw-r--r--drivers/pci/hotplug/pciehp.h7
-rw-r--r--drivers/pci/hotplug/pciehp_pci.c132
2 files changed, 1 insertions, 138 deletions
diff --git a/drivers/pci/hotplug/pciehp.h b/drivers/pci/hotplug/pciehp.h
index 86cdfd71ed2..36faa9a8e18 100644
--- a/drivers/pci/hotplug/pciehp.h
+++ b/drivers/pci/hotplug/pciehp.h
@@ -237,15 +237,8 @@ static inline int pciehp_get_hp_hw_control_from_firmware(struct pci_dev *dev)
return retval;
return pciehp_acpi_slot_detection_check(dev);
}
-
-static inline int pciehp_get_hp_params_from_firmware(struct pci_dev *dev,
- struct hotplug_params *hpp)
-{
- return acpi_get_hp_params_from_firmware(dev, hpp);
-}
#else
#define pciehp_firmware_init() do {} while (0)
#define pciehp_get_hp_hw_control_from_firmware(dev) 0
-#define pciehp_get_hp_params_from_firmware(dev, hpp) (-ENODEV)
#endif /* CONFIG_ACPI */
#endif /* _PCIEHP_H */
diff --git a/drivers/pci/hotplug/pciehp_pci.c b/drivers/pci/hotplug/pciehp_pci.c
index af295d080a0..02e24d63b3e 100644
--- a/drivers/pci/hotplug/pciehp_pci.c
+++ b/drivers/pci/hotplug/pciehp_pci.c
@@ -34,136 +34,6 @@
#include "../pci.h"
#include "pciehp.h"
-static void program_hpp_type0(struct pci_dev *dev, struct hpp_type0 *hpp)
-{
- u16 pci_cmd, pci_bctl;
-
- if (hpp->revision > 1) {
- warn("Rev.%d type0 record not supported\n", hpp->revision);
- return;
- }
-
- pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, hpp->cache_line_size);
- pci_write_config_byte(dev, PCI_LATENCY_TIMER, hpp->latency_timer);
- pci_read_config_word(dev, PCI_COMMAND, &pci_cmd);
- if (hpp->enable_serr)
- pci_cmd |= PCI_COMMAND_SERR;
- else
- pci_cmd &= ~PCI_COMMAND_SERR;
- if (hpp->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 */
- if ((dev->class >> 8) == PCI_CLASS_BRIDGE_PCI) {
- pci_write_config_byte(dev, PCI_SEC_LATENCY_TIMER,
- hpp->latency_timer);
- pci_read_config_word(dev, PCI_BRIDGE_CONTROL, &pci_bctl);
- if (hpp->enable_serr)
- pci_bctl |= PCI_BRIDGE_CTL_SERR;
- else
- pci_bctl &= ~PCI_BRIDGE_CTL_SERR;
- if (hpp->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);
- }
-}
-
-static void program_hpp_type2(struct pci_dev *dev, struct hpp_type2 *hpp)
-{
- int pos;
- u16 reg16;
- u32 reg32;
-
- if (hpp->revision > 1) {
- warn("Rev.%d type2 record not supported\n", hpp->revision);
- return;
- }
-
- /* Find PCI Express capability */
- pos = pci_find_capability(dev, PCI_CAP_ID_EXP);
- if (!pos)
- return;
-
- /* Initialize Device Control Register */
- pci_read_config_word(dev, pos + PCI_EXP_DEVCTL, &reg16);
- reg16 = (reg16 & hpp->pci_exp_devctl_and) | hpp->pci_exp_devctl_or;
- pci_write_config_word(dev, pos + PCI_EXP_DEVCTL, reg16);
-
- /* Initialize Link Control Register */
- if (dev->subordinate) {
- pci_read_config_word(dev, pos + PCI_EXP_LNKCTL, &reg16);
- reg16 = (reg16 & hpp->pci_exp_lnkctl_and)
- | hpp->pci_exp_lnkctl_or;
- pci_write_config_word(dev, pos + PCI_EXP_LNKCTL, reg16);
- }
-
- /* Find Advanced Error Reporting Enhanced Capability */
- pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);
- if (!pos)
- return;
-
- /* Initialize Uncorrectable Error Mask Register */
- pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_MASK, &reg32);
- reg32 = (reg32 & hpp->unc_err_mask_and) | hpp->unc_err_mask_or;
- pci_write_config_dword(dev, pos + PCI_ERR_UNCOR_MASK, reg32);
-
- /* Initialize Uncorrectable Error Severity Register */
- pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_SEVER, &reg32);
- reg32 = (reg32 & hpp->unc_err_sever_and) | hpp->unc_err_sever_or;
- pci_write_config_dword(dev, pos + PCI_ERR_UNCOR_SEVER, reg32);
-
- /* Initialize Correctable Error Mask Register */
- pci_read_config_dword(dev, pos + PCI_ERR_COR_MASK, &reg32);
- reg32 = (reg32 & hpp->cor_err_mask_and) | hpp->cor_err_mask_or;
- pci_write_config_dword(dev, pos + PCI_ERR_COR_MASK, reg32);
-
- /* Initialize Advanced Error Capabilities and Control Register */
- pci_read_config_dword(dev, pos + PCI_ERR_CAP, &reg32);
- reg32 = (reg32 & hpp->adv_err_cap_and) | hpp->adv_err_cap_or;
- pci_write_config_dword(dev, pos + PCI_ERR_CAP, reg32);
-
- /*
- * FIXME: The following two registers are not supported yet.
- *
- * o Secondary Uncorrectable Error Severity Register
- * o Secondary Uncorrectable Error Mask Register
- */
-}
-
-static void program_fw_provided_values(struct pci_dev *dev)
-{
- struct pci_dev *cdev;
- struct hotplug_params hpp;
-
- /* 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 (pciehp_get_hp_params_from_firmware(dev, &hpp)) {
- warn("Could not get hotplug parameters\n");
- return;
- }
-
- if (hpp.t2)
- program_hpp_type2(dev, hpp.t2);
- if (hpp.t0)
- program_hpp_type0(dev, hpp.t0);
-
- /* Program child devices */
- if (dev->subordinate) {
- list_for_each_entry(cdev, &dev->subordinate->devices,
- bus_list)
- program_fw_provided_values(cdev);
- }
-}
-
static int __ref pciehp_add_bridge(struct pci_dev *dev)
{
struct pci_bus *parent = dev->bus;
@@ -226,7 +96,7 @@ int pciehp_configure_device(struct slot *p_slot)
(dev->hdr_type == PCI_HEADER_TYPE_CARDBUS)) {
pciehp_add_bridge(dev);
}
- program_fw_provided_values(dev);
+ pci_configure_slot(dev);
pci_dev_put(dev);
}