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PCI: OF: Move of_pci_dma_configure() to pci_dma_configure()

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This patch move of_pci_dma_configure() to a more generic
pci_dma_configure(), which can be extended by non-OF code (e.g. ACPI).

This has no functional change.

Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Acked-by: Rob Herring <robh+dt@kernel.org>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Hanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Suthikulpanit, Suravee 2015-10-28 15:50:53 -07:00 committed by Rafael J. Wysocki
parent 37efbe20fb
commit 50230713b6
3 changed files with 21 additions and 23 deletions
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19
drivers/of/of_pci.c
View File

@ -117,25 +117,6 @@ int of_get_pci_domain_nr(struct device_node *node)
}
EXPORT_SYMBOL_GPL(of_get_pci_domain_nr);
/**
* of_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 of host bridge's parent (if any).
*/
void of_pci_dma_configure(struct pci_dev *pci_dev)
{
struct device *dev = &pci_dev->dev;
struct device *bridge = pci_get_host_bridge_device(pci_dev);
if (bridge->parent)
of_dma_configure(dev, bridge->parent->of_node);
pci_put_host_bridge_device(bridge);
}
EXPORT_SYMBOL_GPL(of_pci_dma_configure);
#if defined(CONFIG_OF_ADDRESS)
/**
* of_pci_get_host_bridge_resources - Parse PCI host bridge resources from DT

22
drivers/pci/probe.c
View File

@ -6,6 +6,7 @@
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/of_device.h>
#include <linux/of_pci.h>
#include <linux/pci_hotplug.h>
#include <linux/slab.h>
@ -1633,6 +1634,25 @@ static void pci_set_msi_domain(struct pci_dev *dev)
dev_get_msi_domain(&dev->bus->dev));
}
/**
* 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 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);
}
pci_put_host_bridge_device(bridge);
}
void pci_device_add(struct pci_dev *dev, struct pci_bus *bus)
{
int ret;
@ -1646,7 +1666,7 @@ void pci_device_add(struct pci_dev *dev, struct pci_bus *bus)
dev->dev.dma_mask = &dev->dma_mask;
dev->dev.dma_parms = &dev->dma_parms;
dev->dev.coherent_dma_mask = 0xffffffffull;
of_pci_dma_configure(dev);
pci_dma_configure(dev);
pci_set_dma_max_seg_size(dev, 65536);
pci_set_dma_seg_boundary(dev, 0xffffffff);

3
include/linux/of_pci.h
View File

@ -16,7 +16,6 @@ int of_pci_get_devfn(struct device_node *np);
int of_irq_parse_and_map_pci(const struct pci_dev *dev, u8 slot, u8 pin);
int of_pci_parse_bus_range(struct device_node *node, struct resource *res);
int of_get_pci_domain_nr(struct device_node *node);
void of_pci_dma_configure(struct pci_dev *pci_dev);
#else
static inline int of_irq_parse_pci(const struct pci_dev *pdev, struct of_phandle_args *out_irq)
{
@ -51,8 +50,6 @@ of_get_pci_domain_nr(struct device_node *node)
{
return -1;
}
static inline void of_pci_dma_configure(struct pci_dev *pci_dev) { }
#endif
#if defined(CONFIG_OF_ADDRESS)