From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Date: Sat, 7 Nov 2015 00:30:10 +0000 (+0100)
Subject: Merge branch 'acpi-pci'
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=f2115faaf0df42623638dfbfc5bdaab6ef7375ab;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

Merge branch 'acpi-pci'

* acpi-pci:
  PCI: ACPI: Add support for PCI device DMA coherency
  PCI: OF: Move of_pci_dma_configure() to pci_dma_configure()
  of/pci: Fix pci_get_host_bridge_device leak
  device property: ACPI: Remove unused DMA APIs
  device property: ACPI: Make use of the new DMA Attribute APIs
  device property: Adding DMA Attribute APIs for Generic Devices
  ACPI: Adding DMA Attribute APIs for ACPI Device
  device property: Introducing enum dev_dma_attr
  ACPI: Honor ACPI _CCA attribute setting

Conflicts:
	drivers/crypto/ccp/ccp-platform.c
---

f2115faaf0df42623638dfbfc5bdaab6ef7375ab
diff --cc drivers/crypto/ccp/ccp-platform.c
index 8b923b7e9389,844118cb31a3..01b50cb4c982
--- a/drivers/crypto/ccp/ccp-platform.c
+++ b/drivers/crypto/ccp/ccp-platform.c
@@@ -94,6 -95,8 +94,7 @@@ static int ccp_platform_probe(struct pl
  	struct ccp_device *ccp;
  	struct ccp_platform *ccp_platform;
  	struct device *dev = &pdev->dev;
 -	struct acpi_device *adev = ACPI_COMPANION(dev);
+ 	enum dev_dma_attr attr;
  	struct resource *ior;
  	int ret;
  
diff --cc drivers/pci/probe.c
index f14a970b61fa,064078e11017..0dac52633f01
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@@ -1622,50 -1624,45 +1624,78 @@@ static void pci_init_capabilities(struc
  	pci_enable_acs(dev);
  }
  
 +/*
 + * This is the equivalent of pci_host_bridge_msi_domain that acts on
 + * devices. Firmware interfaces that can select the MSI domain on a
 + * per-device basis should be called from here.
 + */
 +static struct irq_domain *pci_dev_msi_domain(struct pci_dev *dev)
 +{
 +	struct irq_domain *d;
 +
 +	/*
 +	 * If a domain has been set through the pcibios_add_device
 +	 * callback, then this is the one (platform code knows best).
 +	 */
 +	d = dev_get_msi_domain(&dev->dev);
 +	if (d)
 +		return d;
 +
 +	/*
 +	 * Let's see if we have a firmware interface able to provide
 +	 * the domain.
 +	 */
 +	d = pci_msi_get_device_domain(dev);
 +	if (d)
 +		return d;
 +
 +	return NULL;
 +}
 +
  static void pci_set_msi_domain(struct pci_dev *dev)
  {
 +	struct irq_domain *d;
 +
  	/*
 -	 * If no domain has been set through the pcibios_add_device
 -	 * callback, inherit the default from the bus device.
 +	 * If the platform or firmware interfaces cannot supply a
 +	 * device-specific MSI domain, then inherit the default domain
 +	 * from the host bridge itself.
  	 */
 -	if (!dev_get_msi_domain(&dev->dev))
 -		dev_set_msi_domain(&dev->dev,
 -				   dev_get_msi_domain(&dev->bus->dev));
 +	d = pci_dev_msi_domain(dev);
 +	if (!d)
 +		d = dev_get_msi_domain(&dev->bus->dev);
 +
 +	dev_set_msi_domain(&dev->dev, d);
  }
  
+ /**
+  * pci_dma_configure - Setup DMA configuration
+  * @dev: ptr to pci_dev struct of the PCI device
+  *
+  * Function to update PCI devices's DMA configuration using the same
+  * info from the OF node or ACPI node of host bridge's parent (if any).
+  */
+ static void pci_dma_configure(struct pci_dev *dev)
+ {
+ 	struct device *bridge = pci_get_host_bridge_device(dev);
+ 
+ 	if (IS_ENABLED(CONFIG_OF) && dev->dev.of_node) {
+ 		if (bridge->parent)
+ 			of_dma_configure(&dev->dev, bridge->parent->of_node);
+ 	} else if (has_acpi_companion(bridge)) {
+ 		struct acpi_device *adev = to_acpi_device_node(bridge->fwnode);
+ 		enum dev_dma_attr attr = acpi_get_dma_attr(adev);
+ 
+ 		if (attr == DEV_DMA_NOT_SUPPORTED)
+ 			dev_warn(&dev->dev, "DMA not supported.\n");
+ 		else
+ 			arch_setup_dma_ops(&dev->dev, 0, 0, NULL,
+ 					   attr == DEV_DMA_COHERENT);
+ 	}
+ 
+ 	pci_put_host_bridge_device(bridge);
+ }
+ 
  void pci_device_add(struct pci_dev *dev, struct pci_bus *bus)
  {
  	int ret;