On Thu, Apr 11, 2013 at 9:13 AM, Lucas Kannebley Tavares < lucaskt@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:
- max_bus_speed is used to set the device to gen2 speeds
- 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@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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