lkml.org 
[lkml]   [2015]   [Oct]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH V4 8/8] PCI: ACPI: Add support for PCI device DMA coherency
On 2015/10/21 23:52, Suravee Suthikulpanit wrote:
> This patch adds support for setting up PCI device DMA coherency from
> ACPI _CCA object that should normally be specified in the DSDT node
> of its PCI host bridge.
>
> Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
> CC: Bjorn Helgaas <bhelgaas@google.com>
> CC: Catalin Marinas <catalin.marinas@arm.com>
> CC: Rob Herring <robh+dt@kernel.org>
> CC: Will Deacon <will.deacon@arm.com>
> CC: Rafael J. Wysocki <rjw@rjwysocki.net>
> CC: Murali Karicheri <m-karicheri2@ti.com>
> ---
> drivers/pci/probe.c | 19 ++++++++++++++-----
> 1 file changed, 14 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
> index 09264f8..6e9f7e6 100644
> --- a/drivers/pci/probe.c
> +++ b/drivers/pci/probe.c
> @@ -1642,17 +1642,26 @@ static void pci_set_msi_domain(struct pci_dev *dev)
> * @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).
> + * 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)
> - return;
> -
> - of_dma_configure(&dev->dev, bridge->parent->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_node(bridge->fwnode);

It's to_acpi_device_node() now in Rafael's tree.

Thanks
Hanjun



\
 
 \ /
  Last update: 2015-10-24 10:21    [W:0.148 / U:0.196 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site