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Commit 14b5cb37 authored by Bjorn Helgaas's avatar Bjorn Helgaas
Browse files

Merge branch 'pci/yijing-ari' into next 

* pci/yijing-ari:
  PCI: shpchp: Iterate over all devices in slot, not functions 0-7
  PCI: sgihp: Iterate over all devices in slot, not functions 0-7
  PCI: cpcihp: Iterate over all devices in slot, not functions 0-7
  PCI: pciehp: Iterate over all devices in slot, not functions 0-7
  PCI: Consolidate "next-function" functions
  PCI: Rename pci_enable_ari() to pci_configure_ari()
  PCI: Enable ARI if dev and upstream bridge support it; disable otherwise
parents 708b59bf fcbed0bc

drivers/pci/hotplug/cpci_hotplug_pci.c

+11 −18
Original line number Diff line number Diff line
@@ -252,8 +252,8 @@ int cpci_led_off(struct slot* slot) 


int __ref cpci_configure_slot(struct slot *slot)

{

	struct pci_dev *dev;

	struct pci_bus *parent;

	int fn;



	dbg("%s - enter", __func__);
@@ -282,18 +282,13 @@ int __ref cpci_configure_slot(struct slot *slot) 
	}

	parent = slot->dev->bus;



	for (fn = 0; fn < 8; fn++) {

		struct pci_dev *dev;



		dev = pci_get_slot(parent,

				   PCI_DEVFN(PCI_SLOT(slot->devfn), fn));

		if (!dev)

	list_for_each_entry(dev, &parent->devices, bus_list)

		if (PCI_SLOT(dev->devfn) != PCI_SLOT(slot->devfn))

			continue;

		if ((dev->hdr_type == PCI_HEADER_TYPE_BRIDGE) ||

		    (dev->hdr_type == PCI_HEADER_TYPE_CARDBUS))

			pci_hp_add_bridge(dev);

		pci_dev_put(dev);

	}





	pci_assign_unassigned_bridge_resources(parent->self);
@@ -305,8 +300,7 @@ int __ref cpci_configure_slot(struct slot *slot) 


int cpci_unconfigure_slot(struct slot* slot)

{

	int i;

	struct pci_dev *dev;

	struct pci_dev *dev, *temp;



	dbg("%s - enter", __func__);

	if (!slot->dev) {
@@ -314,14 +308,13 @@ int cpci_unconfigure_slot(struct slot* slot) 
		return -ENODEV;

	}



	for (i = 0; i < 8; i++) {

		dev = pci_get_slot(slot->bus,

				    PCI_DEVFN(PCI_SLOT(slot->devfn), i));

		if (dev) {

	list_for_each_entry_safe(dev, temp, &slot->bus->devices, bus_list) {

		if (PCI_SLOT(dev->devfn) != PCI_SLOT(slot->devfn))

			continue;

		pci_dev_get(dev);

		pci_stop_and_remove_bus_device(dev);

		pci_dev_put(dev);

	}

	}

	pci_dev_put(slot->dev);

	slot->dev = NULL;

drivers/pci/hotplug/pciehp_pci.c

+16 −28
Original line number Diff line number Diff line
@@ -39,7 +39,7 @@ int pciehp_configure_device(struct slot *p_slot) 
	struct pci_dev *dev;

	struct pci_dev *bridge = p_slot->ctrl->pcie->port;

	struct pci_bus *parent = bridge->subordinate;

	int num, fn;

	int num;

	struct controller *ctrl = p_slot->ctrl;



	dev = pci_get_slot(parent, PCI_DEVFN(0, 0));
@@ -57,28 +57,18 @@ int pciehp_configure_device(struct slot *p_slot) 
		return -ENODEV;

	}



	for (fn = 0; fn < 8; fn++) {

		dev = pci_get_slot(parent, PCI_DEVFN(0, fn));

		if (!dev)

			continue;

	list_for_each_entry(dev, &parent->devices, bus_list)

		if ((dev->hdr_type == PCI_HEADER_TYPE_BRIDGE) ||

				(dev->hdr_type == PCI_HEADER_TYPE_CARDBUS))

			pci_hp_add_bridge(dev);

		pci_dev_put(dev);

	}



	pci_assign_unassigned_bridge_resources(bridge);



	for (fn = 0; fn < 8; fn++) {

		dev = pci_get_slot(parent, PCI_DEVFN(0, fn));

		if (!dev)

	list_for_each_entry(dev, &parent->devices, bus_list) {

		if ((dev->class >> 16) == PCI_BASE_CLASS_DISPLAY)

			continue;

		if ((dev->class >> 16) == PCI_BASE_CLASS_DISPLAY) {

			pci_dev_put(dev);

			continue;

		}



		pci_configure_slot(dev);

		pci_dev_put(dev);

	}



	pci_bus_add_devices(parent);
@@ -89,9 +79,9 @@ int pciehp_configure_device(struct slot *p_slot) 
int pciehp_unconfigure_device(struct slot *p_slot)

{

	int ret, rc = 0;

	int j;

	u8 bctl = 0;

	u8 presence = 0;

	struct pci_dev *dev, *temp;

	struct pci_bus *parent = p_slot->ctrl->pcie->port->subordinate;

	u16 command;

	struct controller *ctrl = p_slot->ctrl;
@@ -102,33 +92,31 @@ int pciehp_unconfigure_device(struct slot *p_slot) 
	if (ret)

		presence = 0;



	for (j = 0; j < 8; j++) {

		struct pci_dev *temp = pci_get_slot(parent, PCI_DEVFN(0, j));

		if (!temp)

			continue;

		if (temp->hdr_type == PCI_HEADER_TYPE_BRIDGE && presence) {

			pci_read_config_byte(temp, PCI_BRIDGE_CONTROL, &bctl);

	list_for_each_entry_safe(dev, temp, &parent->devices, bus_list) {

		pci_dev_get(dev);

		if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE && presence) {

			pci_read_config_byte(dev, PCI_BRIDGE_CONTROL, &bctl);

			if (bctl & PCI_BRIDGE_CTL_VGA) {

				ctrl_err(ctrl,

					 "Cannot remove display device %s\n",

					 pci_name(temp));

				pci_dev_put(temp);

					 pci_name(dev));

				pci_dev_put(dev);

				rc = -EINVAL;

				break;

			}

		}

		pci_stop_and_remove_bus_device(temp);

		pci_stop_and_remove_bus_device(dev);

		/*

		 * Ensure that no new Requests will be generated from

		 * the device.

		 */

		if (presence) {

			pci_read_config_word(temp, PCI_COMMAND, &command);

			pci_read_config_word(dev, PCI_COMMAND, &command);

			command &= ~(PCI_COMMAND_MASTER | PCI_COMMAND_SERR);

			command |= PCI_COMMAND_INTX_DISABLE;

			pci_write_config_word(temp, PCI_COMMAND, command);

			pci_write_config_word(dev, PCI_COMMAND, command);

		}

		pci_dev_put(temp);

		pci_dev_put(dev);

	}



	return rc;

drivers/pci/hotplug/sgi_hotplug.c

+29 −34
Original line number Diff line number Diff line
@@ -334,7 +334,7 @@ static int enable_slot(struct hotplug_slot *bss_hotplug_slot) 
	struct slot *slot = bss_hotplug_slot->private;

	struct pci_bus *new_bus = NULL;

	struct pci_dev *dev;

	int func, num_funcs;

	int num_funcs;

	int new_ppb = 0;

	int rc;

	char *ssdt = NULL;
@@ -381,11 +381,10 @@ static int enable_slot(struct hotplug_slot *bss_hotplug_slot) 
	 * to the Linux PCI interface and tell the drivers

	 * about them.

	 */

	for (func = 0; func < num_funcs;  func++) {

		dev = pci_get_slot(slot->pci_bus,

				   PCI_DEVFN(slot->device_num + 1,

					     PCI_FUNC(func)));

		if (dev) {

	list_for_each_entry(dev, &slot->pci_bus->devices, bus_list) {

		if (PCI_SLOT(dev->devfn) != slot->device_num + 1)

			continue;



		/* Need to do slot fixup on PPB before fixup of children

		 * (PPB's pcidev_info needs to be in pcidev_info list

		 * before child's SN_PCIDEV_INFO() call to setup
@@ -403,8 +402,6 @@ static int enable_slot(struct hotplug_slot *bss_hotplug_slot) 
				new_ppb = 1;

			}

		}

			pci_dev_put(dev);

		}

	}



	/*
@@ -481,8 +478,7 @@ static int enable_slot(struct hotplug_slot *bss_hotplug_slot) 
static int disable_slot(struct hotplug_slot *bss_hotplug_slot)

{

	struct slot *slot = bss_hotplug_slot->private;

	struct pci_dev *dev;

	int func;

	struct pci_dev *dev, *temp;

	int rc;

	acpi_owner_id ssdt_id = 0;
@@ -542,16 +538,15 @@ static int disable_slot(struct hotplug_slot *bss_hotplug_slot) 
	}



	/* Free the SN resources assigned to the Linux device.*/

	for (func = 0; func < 8;  func++) {

		dev = pci_get_slot(slot->pci_bus,

				   PCI_DEVFN(slot->device_num + 1,

				   	     PCI_FUNC(func)));

		if (dev) {

	list_for_each_entry_safe(dev, temp, &slot->pci_bus->devices, bus_list) {

		if (PCI_SLOT(dev->devfn) != slot->device_num + 1)

			continue;



		pci_dev_get(dev);

		sn_bus_free_data(dev);

		pci_stop_and_remove_bus_device(dev);

		pci_dev_put(dev);

	}

	}



	/* Remove the SSDT for the slot from the ACPI namespace */

	if (SN_ACPI_BASE_SUPPORT() && ssdt_id) {

drivers/pci/hotplug/shpchp_pci.c

+16 −20
Original line number Diff line number Diff line
@@ -40,7 +40,7 @@ int __ref shpchp_configure_device(struct slot *p_slot) 
	struct controller *ctrl = p_slot->ctrl;

	struct pci_dev *bridge = ctrl->pci_dev;

	struct pci_bus *parent = bridge->subordinate;

	int num, fn;

	int num;



	dev = pci_get_slot(parent, PCI_DEVFN(p_slot->device, 0));

	if (dev) {
@@ -57,24 +57,20 @@ int __ref shpchp_configure_device(struct slot *p_slot) 
		return -ENODEV;

	}



	for (fn = 0; fn < 8; fn++) {

		dev = pci_get_slot(parent, PCI_DEVFN(p_slot->device, fn));

		if (!dev)

	list_for_each_entry(dev, &parent->devices, bus_list) {

		if (PCI_SLOT(dev->devfn) != p_slot->device)

			continue;

		if ((dev->hdr_type == PCI_HEADER_TYPE_BRIDGE) ||

		    (dev->hdr_type == PCI_HEADER_TYPE_CARDBUS))

			pci_hp_add_bridge(dev);

		pci_dev_put(dev);

	}



	pci_assign_unassigned_bridge_resources(bridge);



	for (fn = 0; fn < 8; fn++) {

		dev = pci_get_slot(parent, PCI_DEVFN(p_slot->device, fn));

		if (!dev)

	list_for_each_entry(dev, &parent->devices, bus_list) {

		if (PCI_SLOT(dev->devfn) != p_slot->device)

			continue;

		pci_configure_slot(dev);

		pci_dev_put(dev);

	}



	pci_bus_add_devices(parent);
@@ -85,32 +81,32 @@ int __ref shpchp_configure_device(struct slot *p_slot) 
int shpchp_unconfigure_device(struct slot *p_slot)

{

	int rc = 0;

	int j;

	u8 bctl = 0;

	struct pci_bus *parent = p_slot->ctrl->pci_dev->subordinate;

	struct pci_dev *dev, *temp;

	struct controller *ctrl = p_slot->ctrl;



	ctrl_dbg(ctrl, "%s: domain:bus:dev = %04x:%02x:%02x\n",

		 __func__, pci_domain_nr(parent), p_slot->bus, p_slot->device);



	for (j = 0; j < 8 ; j++) {

		struct pci_dev *temp = pci_get_slot(parent,

				(p_slot->device << 3) | j);

		if (!temp)

	list_for_each_entry_safe(dev, temp, &parent->devices, bus_list) {

		if (PCI_SLOT(dev->devfn) != p_slot->device)

			continue;

		if (temp->hdr_type == PCI_HEADER_TYPE_BRIDGE) {

			pci_read_config_byte(temp, PCI_BRIDGE_CONTROL, &bctl);



		pci_dev_get(dev);

		if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE) {

			pci_read_config_byte(dev, PCI_BRIDGE_CONTROL, &bctl);

			if (bctl & PCI_BRIDGE_CTL_VGA) {

				ctrl_err(ctrl,

					 "Cannot remove display device %s\n",

					 pci_name(temp));

				pci_dev_put(temp);

					 pci_name(dev));

				pci_dev_put(dev);

				rc = -EINVAL;

				break;

			}

		}

		pci_stop_and_remove_bus_device(temp);

		pci_dev_put(temp);

		pci_stop_and_remove_bus_device(dev);

		pci_dev_put(dev);

	}

	return rc;

}

drivers/pci/pci.c

+14 −7
Original line number Diff line number Diff line
@@ -2042,10 +2042,13 @@ void pci_free_cap_save_buffers(struct pci_dev *dev) 
}



/**

 * pci_enable_ari - enable ARI forwarding if hardware support it

 * pci_configure_ari - enable or disable ARI forwarding

 * @dev: the PCI device

 *

 * If @dev and its upstream bridge both support ARI, enable ARI in the

 * bridge.  Otherwise, disable ARI in the bridge.

 */

void pci_enable_ari(struct pci_dev *dev)

void pci_configure_ari(struct pci_dev *dev)

{

	u32 cap;

	struct pci_dev *bridge;
@@ -2053,9 +2056,6 @@ void pci_enable_ari(struct pci_dev *dev) 
	if (pcie_ari_disabled || !pci_is_pcie(dev) || dev->devfn)

		return;



	if (!pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ARI))

		return;



	bridge = dev->bus->self;

	if (!bridge)

		return;
@@ -2064,8 +2064,15 @@ void pci_enable_ari(struct pci_dev *dev) 
	if (!(cap & PCI_EXP_DEVCAP2_ARI))

		return;



	pcie_capability_set_word(bridge, PCI_EXP_DEVCTL2, PCI_EXP_DEVCTL2_ARI);

	if (pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ARI)) {

		pcie_capability_set_word(bridge, PCI_EXP_DEVCTL2,

					 PCI_EXP_DEVCTL2_ARI);

		bridge->ari_enabled = 1;

	} else {

		pcie_capability_clear_word(bridge, PCI_EXP_DEVCTL2,

					   PCI_EXP_DEVCTL2_ARI);

		bridge->ari_enabled = 0;

	}

}



/**