PCI: Make current and maximum bus speeds part of the PCI core
Move the max_bus_speed and cur_bus_speed into the pci_bus. Expose the
values through the PCI slot driver instead of the hotplug slot driver.
Update all the hotplug drivers to use the pci_bus instead of their own
data structures.
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
diff --git a/drivers/pci/hotplug/pciehp_hpc.c b/drivers/pci/hotplug/pciehp_hpc.c
index 6744ca1..40b48f5 100644
--- a/drivers/pci/hotplug/pciehp_hpc.c
+++ b/drivers/pci/hotplug/pciehp_hpc.c
@@ -492,6 +492,7 @@
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 @@
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 @@
return IRQ_HANDLED;
}
-int pciehp_get_max_link_speed(struct slot *slot, enum pci_bus_speed *value)
-{
- struct controller *ctrl = slot->ctrl;
- enum pci_bus_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_SPEED_2_5GT;
- break;
- case 2:
- lnk_speed = PCIE_SPEED_5_0GT;
- break;
- default:
- lnk_speed = PCI_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 @@
return retval;
}
-int pciehp_get_cur_link_speed(struct slot *slot, enum pci_bus_speed *value)
-{
- struct controller *ctrl = slot->ctrl;
- enum pci_bus_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_SPEED_2_5GT;
- break;
- case 2:
- lnk_speed = PCIE_SPEED_5_0GT;
- break;
- default:
- lnk_speed = PCI_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)
{