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yaml
---
r: 161921
b: refs/heads/master
c: d569c74
h: refs/heads/master
i:
  161919: aade480
v: v3
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Bjorn Helgaas authored and Jesse Barnes committed Sep 15, 2009
1 parent 4f3b918 commit e72e8dc
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Showing 3 changed files with 2 additions and 139 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: 8838400db5193c37588813c2eb1249b821781950
refs/heads/master: d569c74d78ffcde2f163256e4da934ec3bacff0e
7 changes: 0 additions & 7 deletions trunk/drivers/pci/hotplug/pciehp.h
Original file line number Diff line number Diff line change
Expand Up @@ -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 */
132 changes: 1 addition & 131 deletions trunk/drivers/pci/hotplug/pciehp_pci.c
Original file line number Diff line number Diff line change
Expand Up @@ -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;
Expand Down Expand Up @@ -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);
}

Expand Down

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