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authorJesse Keating <jkeating@redhat.com>2010-07-29 17:18:45 -0700
committerJesse Keating <jkeating@redhat.com>2010-07-29 17:18:45 -0700
commit2f82dda4a9bf41e64e864889bf06564bdf826e25 (patch)
tree118a7b483ae5de4dbf83d20001302f1404866ef0 /linux-2.6-pciehp-update.patch
parent64ba2e5ffde5f2418eb26c700cb0ab62b04e5013 (diff)
downloaddom0-kernel-2f82dda4a9bf41e64e864889bf06564bdf826e25.tar.gz
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initial srpm import
Diffstat (limited to 'linux-2.6-pciehp-update.patch')
-rw-r--r--linux-2.6-pciehp-update.patch147
1 files changed, 147 insertions, 0 deletions
diff --git a/linux-2.6-pciehp-update.patch b/linux-2.6-pciehp-update.patch
new file mode 100644
index 0000000..38ec797
--- /dev/null
+++ b/linux-2.6-pciehp-update.patch
@@ -0,0 +1,147 @@
+diff --git a/drivers/pci/hotplug/pciehp.h b/drivers/pci/hotplug/pciehp.h
+index b2801a7..c9f18f9 100644
+--- a/drivers/pci/hotplug/pciehp.h
++++ b/drivers/pci/hotplug/pciehp.h
+@@ -224,6 +224,10 @@ static inline int pciehp_get_hp_hw_control_from_firmware(struct pci_dev *dev)
+ {
+ u32 flags = (OSC_PCI_EXPRESS_NATIVE_HP_CONTROL |
+ OSC_PCI_EXPRESS_CAP_STRUCTURE_CONTROL);
++ if (pciehp_force) {
++ dev_info(&dev->dev, "Bypassing BIOS check for pciehp\n");
++ return 0;
++ }
+ return acpi_get_hp_hw_control_from_firmware(dev, flags);
+ }
+
+diff --git a/drivers/pci/hotplug/pciehp_core.c b/drivers/pci/hotplug/pciehp_core.c
+index 39cf248..ab6b016 100644
+--- a/drivers/pci/hotplug/pciehp_core.c
++++ b/drivers/pci/hotplug/pciehp_core.c
+@@ -41,6 +41,7 @@ int pciehp_debug;
+ int pciehp_poll_mode;
+ int pciehp_poll_time;
+ int pciehp_force;
++int pciehp_passive;
+ struct workqueue_struct *pciehp_wq;
+
+ #define DRIVER_VERSION "0.4"
+@@ -50,15 +51,18 @@ struct workqueue_struct *pciehp_wq;
+ MODULE_AUTHOR(DRIVER_AUTHOR);
+ MODULE_DESCRIPTION(DRIVER_DESC);
+ MODULE_LICENSE("GPL");
++MODULE_ALIAS("acpi*:PNP0A08:*");
+
+ module_param(pciehp_debug, bool, 0644);
+ module_param(pciehp_poll_mode, bool, 0644);
+ module_param(pciehp_poll_time, int, 0644);
+ module_param(pciehp_force, bool, 0644);
++module_param(pciehp_passive, bool, 0644);
+ MODULE_PARM_DESC(pciehp_debug, "Debugging mode enabled or not");
+ MODULE_PARM_DESC(pciehp_poll_mode, "Using polling mechanism for hot-plug events or not");
+ MODULE_PARM_DESC(pciehp_poll_time, "Polling mechanism frequency, in seconds");
+ MODULE_PARM_DESC(pciehp_force, "Force pciehp, even if _OSC and OSHP are missing");
++MODULE_PARM_DESC(pciehp_passive, "Listen for pciehp events, even if _OSC and OSHP are missing");
+
+ #define PCIE_MODULE_NAME "pciehp"
+
+@@ -85,6 +89,13 @@ static struct hotplug_slot_ops pciehp_hotplug_slot_ops = {
+ .get_cur_bus_speed = get_cur_bus_speed,
+ };
+
++static struct hotplug_slot_ops pciehp_passive_hotplug_slot_ops = {
++ .owner = THIS_MODULE,
++ .get_adapter_status = get_adapter_status,
++ .get_max_bus_speed = get_max_bus_speed,
++ .get_cur_bus_speed = get_cur_bus_speed,
++};
++
+ /*
+ * Check the status of the Electro Mechanical Interlock (EMI)
+ */
+@@ -212,7 +223,11 @@ static int init_slots(struct controller *ctrl)
+ hotplug_slot->info = info;
+ hotplug_slot->private = slot;
+ hotplug_slot->release = &release_slot;
+- hotplug_slot->ops = &pciehp_hotplug_slot_ops;
++ if (pciehp_passive &&
++ pciehp_get_hp_hw_control_from_firmware(ctrl->pci_dev))
++ hotplug_slot->ops = &pciehp_passive_hotplug_slot_ops;
++ else
++ hotplug_slot->ops = &pciehp_hotplug_slot_ops;
+ slot->hotplug_slot = hotplug_slot;
+ snprintf(name, SLOT_NAME_SIZE, "%u", slot->number);
+
+@@ -407,11 +422,7 @@ static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_
+ u8 value;
+ struct pci_dev *pdev = dev->port;
+
+- if (pciehp_force)
+- dev_info(&dev->device,
+- "Bypassing BIOS check for pciehp use on %s\n",
+- pci_name(pdev));
+- else if (pciehp_get_hp_hw_control_from_firmware(pdev))
++ if (!pciehp_passive && pciehp_get_hp_hw_control_from_firmware(pdev))
+ goto err_out_none;
+
+ ctrl = pcie_init(dev);
+@@ -436,7 +447,7 @@ static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_
+ t_slot = pciehp_find_slot(ctrl, ctrl->slot_device_offset);
+ t_slot->hpc_ops->get_adapter_status(t_slot, &value);
+ if (value) {
+- if (pciehp_force)
++ if (pciehp_force || pciehp_passive)
+ pciehp_enable_slot(t_slot);
+ } else {
+ /* Power off slot if not occupied */
+@@ -474,8 +485,11 @@ static int pciehp_suspend (struct pcie_device *dev, pm_message_t state)
+
+ static int pciehp_resume (struct pcie_device *dev)
+ {
++ struct pci_dev *pdev = dev->port;
+ dev_info(&dev->device, "%s ENTRY\n", __func__);
+- if (pciehp_force) {
++
++ if (pciehp_force || (pciehp_passive &&
++ pciehp_get_hp_hw_control_from_firmware(pdev))) {
+ struct controller *ctrl = get_service_data(dev);
+ struct slot *t_slot;
+ u8 status;
+diff --git a/drivers/pci/hotplug/pciehp_ctrl.c b/drivers/pci/hotplug/pciehp_ctrl.c
+index fead63c..12640bd 100644
+--- a/drivers/pci/hotplug/pciehp_ctrl.c
++++ b/drivers/pci/hotplug/pciehp_ctrl.c
+@@ -185,7 +185,8 @@ static void set_slot_off(struct controller *ctrl, struct slot * pslot)
+ * before taking any action that relies on power having been
+ * removed from the slot/adapter.
+ */
+- msleep(1000);
++ if (PWR_LED(ctrl) || ATTN_LED(ctrl))
++ msleep(1000);
+
+ if (PWR_LED(ctrl))
+ pslot->hpc_ops->green_led_off(pslot);
+@@ -288,16 +289,16 @@ static int remove_board(struct slot *p_slot)
+ }
+ }
+
+- /*
+- * After turning power off, we must wait for at least 1 second
+- * before taking any action that relies on power having been
+- * removed from the slot/adapter.
+- */
+- msleep(1000);
+-
+- if (PWR_LED(ctrl))
++ if (PWR_LED(ctrl)) {
++ /*
++ * After turning power off, we must wait for at least 1 second
++ * before taking any action that relies on power having been
++ * removed from the slot/adapter.
++ */
++ msleep(1000);
+ /* turn off Green LED */
+ p_slot->hpc_ops->green_led_off(p_slot);
++ }
+
+ return 0;
+ }