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Merge branch 'acpi-pci'

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* 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
This commit is contained in:
Rafael J. Wysocki
2015-11-07 01:30:10 +01:00
parent 0d51ce9ca1 29dbe1f0af
commit f2115faaf0
12 changed files with 146 additions and 78 deletions
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36
include/acpi/acpi_bus.h
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@@ -390,39 +390,6 @@ struct acpi_data_node {
struct completion kobj_done;
};
static inline bool acpi_check_dma(struct acpi_device *adev, bool *coherent)
{
bool ret = false;
if (!adev)
return ret;
/**
* Currently, we only support _CCA=1 (i.e. coherent_dma=1)
* This should be equivalent to specifyig dma-coherent for
* a device in OF.
*
* For the case when _CCA=0 (i.e. coherent_dma=0 && cca_seen=1),
* There are two cases:
* case 1. Do not support and disable DMA.
* case 2. Support but rely on arch-specific cache maintenance for
* non-coherence DMA operations.
* Currently, we implement case 1 above.
*
* For the case when _CCA is missing (i.e. cca_seen=0) and
* platform specifies ACPI_CCA_REQUIRED, we do not support DMA,
* and fallback to arch-specific default handling.
*
* See acpi_init_coherency() for more info.
*/
if (adev->flags.coherent_dma) {
ret = true;
if (coherent)
*coherent = adev->flags.coherent_dma;
}
return ret;
}
static inline bool is_acpi_node(struct fwnode_handle *fwnode)
{
return fwnode && (fwnode->type == FWNODE_ACPI
@@ -595,6 +562,9 @@ struct acpi_pci_root {
/* helper */
bool acpi_dma_supported(struct acpi_device *adev);
enum dev_dma_attr acpi_get_dma_attr(struct acpi_device *adev);
struct acpi_device *acpi_find_child_device(struct acpi_device *parent,
u64 address, bool check_children);
int acpi_is_root_bridge(acpi_handle);