[PATCHv3 0/2] Speed Cap fixes for ppc64

[Jerome Glisse]

On Thu, Apr 11, 2013 at 9:13 AM, Lucas Kannebley Tavares <
lucaskt at linux.vnet.ibm.com> wrote:

> After all the comments in the last patch series, I did a refactoring of
> what I was proposing and came up with this. Basically, now:
>   1. max_bus_speed is used to set the device to gen2 speeds
>   2. on power there's no longer a conflict between the pseries call and
> other architectures, because the overwrite is done via a ppc_md hook
>   3. radeon is using bus->max_bus_speed instead of
> drm_pcie_get_speed_cap_mask for gen2 capability detection
>
> The first patch consists of some architecture changes, such as adding a
> hook on powerpc for pci_root_bridge_prepare, so that pseries will
> initialize it to a function, while all other architectures get a NULL
> pointer. So that whenever whenever pci_create_root_bus is called, we'll get
> max_bus_speed properly setup from OpenFirmware.
>
> The second patch consists of simple radeon changes not to call
> drm_get_pcie_speed_cap_mask anymore. I assume that on x86 machines, the
> max_bus_speed property will be properly set already.
>

The radeon changes are :

Reviewed-by: Jerome Glisse <jglisse at redhat.com>


>
> Lucas Kannebley Tavares (2):
>   ppc64: perform proper max_bus_speed detection
>   radeon: use max_bus_speed to activate gen2 speeds
>
>  arch/powerpc/include/asm/machdep.h     |    2 +
>  arch/powerpc/kernel/pci-common.c       |    8 +++++
>  arch/powerpc/platforms/pseries/pci.c   |   51
> ++++++++++++++++++++++++++++++++
>  arch/powerpc/platforms/pseries/setup.c |    4 ++
>  drivers/gpu/drm/radeon/evergreen.c     |    9 +----
>  drivers/gpu/drm/radeon/r600.c          |    8 +----
>  drivers/gpu/drm/radeon/rv770.c         |    8 +----
>  7 files changed, 69 insertions(+), 21 deletions(-)
>
> --
> 1.7.4.4
>
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