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authorLinus Torvalds <torvalds@linux-foundation.org>2010-02-26 10:35:27 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-02-26 10:35:27 -0800
commit68c6b859846bd078b37c6ca5f3882032f129e72d (patch)
treee243605957f1cab3532d57d86ea87355c10b6385 /drivers/pci/hotplug/pciehp_hpc.c
parenta4a47bc03fe520e95e0c4212bf97c86545fb14f9 (diff)
parentbb8d41330ce27edb91adb6922d3f8e1a8923f727 (diff)
Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6
* 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (48 commits) x86/PCI: Prevent mmconfig memory corruption ACPI: Use GPE reference counting to support shared GPEs x86/PCI: use host bridge _CRS info by default on 2008 and newer machines PCI: augment bus resource table with a list PCI: add pci_bus_for_each_resource(), remove direct bus->resource[] refs PCI: read bridge windows before filling in subtractive decode resources PCI: split up pci_read_bridge_bases() PCIe PME: use pci_pcie_cap() PCI PM: Run-time callbacks for PCI bus type PCIe PME: use pci_is_pcie() PCI / ACPI / PM: Platform support for PCI PME wake-up ACPI / ACPICA: Multiple system notify handlers per device ACPI / PM: Add more run-time wake-up fields ACPI: Use GPE reference counting to support shared GPEs PCI PM: Make it possible to force using INTx for PCIe PME signaling PCI PM: PCIe PME root port service driver PCI PM: Add function for checking PME status of devices PCI: mark is_pcie obsolete PCI: set PCI_PREF_RANGE_TYPE_64 in pci_bridge_check_ranges PCI: pciehp: second try to get big range for pcie devices ...
Diffstat (limited to 'drivers/pci/hotplug/pciehp_hpc.c')
-rw-r--r--drivers/pci/hotplug/pciehp_hpc.c72
1 files changed, 9 insertions, 63 deletions
diff --git a/drivers/pci/hotplug/pciehp_hpc.c b/drivers/pci/hotplug/pciehp_hpc.c
index 10040d58c8e..40b48f569b1 100644
--- a/drivers/pci/hotplug/pciehp_hpc.c
+++ b/drivers/pci/hotplug/pciehp_hpc.c
@@ -492,6 +492,7 @@ int pciehp_power_on_slot(struct slot * slot)
u16 slot_cmd;
u16 cmd_mask;
u16 slot_status;
+ u16 lnk_status;
int retval = 0;
/* Clear sticky power-fault bit from previous power failures */
@@ -523,6 +524,14 @@ int pciehp_power_on_slot(struct slot * slot)
ctrl_dbg(ctrl, "%s: SLOTCTRL %x write cmd %x\n", __func__,
pci_pcie_cap(ctrl->pcie->port) + PCI_EXP_SLTCTL, slot_cmd);
+ retval = pciehp_readw(ctrl, PCI_EXP_LNKSTA, &lnk_status);
+ if (retval) {
+ ctrl_err(ctrl, "%s: Cannot read LNKSTA register\n",
+ __func__);
+ return retval;
+ }
+ pcie_update_link_speed(ctrl->pcie->port->subordinate, lnk_status);
+
return retval;
}
@@ -610,37 +619,6 @@ static irqreturn_t pcie_isr(int irq, void *dev_id)
return IRQ_HANDLED;
}
-int pciehp_get_max_link_speed(struct slot *slot, enum pci_bus_speed *value)
-{
- struct controller *ctrl = slot->ctrl;
- enum pcie_link_speed lnk_speed;
- u32 lnk_cap;
- int retval = 0;
-
- retval = pciehp_readl(ctrl, PCI_EXP_LNKCAP, &lnk_cap);
- if (retval) {
- ctrl_err(ctrl, "%s: Cannot read LNKCAP register\n", __func__);
- return retval;
- }
-
- switch (lnk_cap & 0x000F) {
- case 1:
- lnk_speed = PCIE_2_5GB;
- break;
- case 2:
- lnk_speed = PCIE_5_0GB;
- break;
- default:
- lnk_speed = PCIE_LNK_SPEED_UNKNOWN;
- break;
- }
-
- *value = lnk_speed;
- ctrl_dbg(ctrl, "Max link speed = %d\n", lnk_speed);
-
- return retval;
-}
-
int pciehp_get_max_lnk_width(struct slot *slot,
enum pcie_link_width *value)
{
@@ -691,38 +669,6 @@ int pciehp_get_max_lnk_width(struct slot *slot,
return retval;
}
-int pciehp_get_cur_link_speed(struct slot *slot, enum pci_bus_speed *value)
-{
- struct controller *ctrl = slot->ctrl;
- enum pcie_link_speed lnk_speed = PCI_SPEED_UNKNOWN;
- int retval = 0;
- u16 lnk_status;
-
- retval = pciehp_readw(ctrl, PCI_EXP_LNKSTA, &lnk_status);
- if (retval) {
- ctrl_err(ctrl, "%s: Cannot read LNKSTATUS register\n",
- __func__);
- return retval;
- }
-
- switch (lnk_status & PCI_EXP_LNKSTA_CLS) {
- case 1:
- lnk_speed = PCIE_2_5GB;
- break;
- case 2:
- lnk_speed = PCIE_5_0GB;
- break;
- default:
- lnk_speed = PCIE_LNK_SPEED_UNKNOWN;
- break;
- }
-
- *value = lnk_speed;
- ctrl_dbg(ctrl, "Current link speed = %d\n", lnk_speed);
-
- return retval;
-}
-
int pciehp_get_cur_lnk_width(struct slot *slot,
enum pcie_link_width *value)
{