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Commit 7f768544 authored by Bjorn Helgaas's avatar Bjorn Helgaas
Browse files

Merge branches 'pci/enumeration', 'pci/hotplug', 'pci/misc', 'pci/ntb',... 

Merge branches 'pci/enumeration', 'pci/hotplug', 'pci/misc', 'pci/ntb', 'pci/thunderbolt' and 'pci/virtualization' into next

* pci/enumeration:
  x86/PCI: Refine PCI support check in pcibios_init()

* pci/hotplug:
  PCI: acpiphp_ibm: Avoid uninitialized variable reference

* pci/misc:
  PCI: Fix spelling errors

* pci/ntb:
  PCI: Add DMA alias quirk for mic_x200_dma
  PCI: Add support for multiple DMA aliases
  PCI: Move informational printk to pci_add_dma_alias()
  PCI: Add pci_add_dma_alias() to abstract implementation

* pci/thunderbolt:
  thunderbolt: Support 1st gen Light Ridge controller
  thunderbolt: Fix typos and magic number
  PCI: Add Intel Thunderbolt device IDs

* pci/virtualization:
  PCI: Work around Intel Sunrise Point PCH incorrect ACS capability
  PCI: Reverse standard ACS vs device-specific ACS enabling
  PCI: Mark Intel i40e NIC INTx masking as broken
parents 9735a227 35a6ae07 4d88d5a7 dcbb408a b1a928cd 19bf4d4f 1bf2bf22

arch/x86/pci/common.c

+1 −1
Original line number Diff line number Diff line
@@ -516,7 +516,7 @@ void __init pcibios_set_cache_line_size(void) 


int __init pcibios_init(void)

{

	if (!raw_pci_ops) {

	if (!raw_pci_ops && !raw_pci_ext_ops) {

		printk(KERN_WARNING "PCI: System does not support PCI\n");

		return 0;

	}

drivers/iommu/iommu.c

+3 −7
Original line number Diff line number Diff line
@@ -660,8 +660,8 @@ static struct iommu_group *get_pci_function_alias_group(struct pci_dev *pdev, 
}



/*

 * Look for aliases to or from the given device for exisiting groups.  The

 * dma_alias_devfn only supports aliases on the same bus, therefore the search

 * Look for aliases to or from the given device for existing groups. DMA

 * aliases are only supported on the same bus, therefore the search

 * space is quite small (especially since we're really only looking at pcie

 * device, and therefore only expect multiple slots on the root complex or

 * downstream switch ports).  It's conceivable though that a pair of
@@ -686,11 +686,7 @@ static struct iommu_group *get_pci_alias_group(struct pci_dev *pdev, 
			continue;



		/* We alias them or they alias us */

		if (((pdev->dev_flags & PCI_DEV_FLAGS_DMA_ALIAS_DEVFN) &&

		     pdev->dma_alias_devfn == tmp->devfn) ||

		    ((tmp->dev_flags & PCI_DEV_FLAGS_DMA_ALIAS_DEVFN) &&

		     tmp->dma_alias_devfn == pdev->devfn)) {



		if (pci_devs_are_dma_aliases(pdev, tmp)) {

			group = get_pci_alias_group(tmp, devfns);

			if (group) {

				pci_dev_put(tmp);

drivers/pci/host/pcie-xilinx-nwl.c

+1 −1
Original line number Diff line number Diff line
@@ -819,7 +819,7 @@ static int nwl_pcie_probe(struct platform_device *pdev) 


	err = nwl_pcie_bridge_init(pcie);

	if (err) {

		dev_err(pcie->dev, "HW Initalization failed\n");

		dev_err(pcie->dev, "HW Initialization failed\n");

		return err;

	}

drivers/pci/hotplug/acpiphp_ibm.c

+2 −0
Original line number Diff line number Diff line
@@ -138,6 +138,8 @@ static union apci_descriptor *ibm_slot_from_id(int id) 
	char *table;



	size = ibm_get_table_from_acpi(&table);

	if (size < 0)

		return NULL;

	des = (union apci_descriptor *)table;

	if (memcmp(des->header.sig, "aPCI", 4) != 0)

		goto ibm_slot_done;

drivers/pci/pci.c

+36 −7
Original line number Diff line number Diff line
@@ -2389,7 +2389,7 @@ static int pci_ea_read(struct pci_dev *dev, int offset) 
	return offset + ent_size;

}



/* Enhanced Allocation Initalization */

/* Enhanced Allocation Initialization */

void pci_ea_init(struct pci_dev *dev)

{

	int ea;
@@ -2547,7 +2547,7 @@ void pci_request_acs(void) 
 * pci_std_enable_acs - enable ACS on devices using standard ACS capabilites

 * @dev: the PCI device

 */

static int pci_std_enable_acs(struct pci_dev *dev)

static void pci_std_enable_acs(struct pci_dev *dev)

{

	int pos;

	u16 cap;
@@ -2555,7 +2555,7 @@ static int pci_std_enable_acs(struct pci_dev *dev) 


	pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ACS);

	if (!pos)

		return -ENODEV;

		return;



	pci_read_config_word(dev, pos + PCI_ACS_CAP, &cap);

	pci_read_config_word(dev, pos + PCI_ACS_CTRL, &ctrl);
@@ -2573,8 +2573,6 @@ static int pci_std_enable_acs(struct pci_dev *dev) 
	ctrl |= (cap & PCI_ACS_UF);



	pci_write_config_word(dev, pos + PCI_ACS_CTRL, ctrl);



	return 0;

}



/**
@@ -2586,10 +2584,10 @@ void pci_enable_acs(struct pci_dev *dev) 
	if (!pci_acs_enable)

		return;



	if (!pci_std_enable_acs(dev))

	if (!pci_dev_specific_enable_acs(dev))

		return;



	pci_dev_specific_enable_acs(dev);

	pci_std_enable_acs(dev);

}



static bool pci_acs_flags_enabled(struct pci_dev *pdev, u16 acs_flags)
@@ -4578,6 +4576,37 @@ int pci_set_vga_state(struct pci_dev *dev, bool decode, 
	return 0;

}



/**

 * pci_add_dma_alias - Add a DMA devfn alias for a device

 * @dev: the PCI device for which alias is added

 * @devfn: alias slot and function

 *

 * This helper encodes 8-bit devfn as bit number in dma_alias_mask.

 * It should be called early, preferably as PCI fixup header quirk.

 */

void pci_add_dma_alias(struct pci_dev *dev, u8 devfn)

{

	if (!dev->dma_alias_mask)

		dev->dma_alias_mask = kcalloc(BITS_TO_LONGS(U8_MAX),

					      sizeof(long), GFP_KERNEL);

	if (!dev->dma_alias_mask) {

		dev_warn(&dev->dev, "Unable to allocate DMA alias mask\n");

		return;

	}



	set_bit(devfn, dev->dma_alias_mask);

	dev_info(&dev->dev, "Enabling fixed DMA alias to %02x.%d\n",

		 PCI_SLOT(devfn), PCI_FUNC(devfn));

}



bool pci_devs_are_dma_aliases(struct pci_dev *dev1, struct pci_dev *dev2)

{

	return (dev1->dma_alias_mask &&

		test_bit(dev2->devfn, dev1->dma_alias_mask)) ||

	       (dev2->dma_alias_mask &&

		test_bit(dev1->devfn, dev2->dma_alias_mask));

}



bool pci_device_is_present(struct pci_dev *pdev)

{

	u32 v;