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Message-Id: <20130611195324.856071642@linuxfoundation.org>
Date: Tue, 11 Jun 2013 13:03:33 -0700
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org,
Kleber Sacilotto de Souza <klebers@...ux.vnet.ibm.com>,
Alex Deucher <alexander.deucher@....com>
Subject: [ 67/79] radeon: use max_bus_speed to activate gen2 speeds
3.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Kleber Sacilotto de Souza <klebers@...ux.vnet.ibm.com>
commit 7e0e41963740525af702bb23edede8ae9afc4ac0 upstream.
radeon currently uses a drm function to get the speed capabilities for
the bus, drm_pcie_get_speed_cap_mask. However, this is a non-standard
method of performing this detection and this patch changes it to use
the max_bus_speed attribute.
From: Lucas Kannebley Tavares <lucaskt@...ux.vnet.ibm.com>
Signed-off-by: Kleber Sacilotto de Souza <klebers@...ux.vnet.ibm.com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
drivers/gpu/drm/radeon/evergreen.c | 10 +++-------
drivers/gpu/drm/radeon/r600.c | 9 ++-------
drivers/gpu/drm/radeon/rv770.c | 9 ++-------
3 files changed, 7 insertions(+), 21 deletions(-)
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -3946,8 +3946,7 @@ void evergreen_fini(struct radeon_device
void evergreen_pcie_gen2_enable(struct radeon_device *rdev)
{
- u32 link_width_cntl, speed_cntl, mask;
- int ret;
+ u32 link_width_cntl, speed_cntl;
if (radeon_pcie_gen2 == 0)
return;
@@ -3962,11 +3961,8 @@ void evergreen_pcie_gen2_enable(struct r
if (ASIC_IS_X2(rdev))
return;
- ret = drm_pcie_get_speed_cap_mask(rdev->ddev, &mask);
- if (ret != 0)
- return;
-
- if (!(mask & DRM_PCIE_SPEED_50))
+ if ((rdev->pdev->bus->max_bus_speed != PCIE_SPEED_5_0GT) &&
+ (rdev->pdev->bus->max_bus_speed != PCIE_SPEED_8_0GT))
return;
speed_cntl = RREG32_PCIE_P(PCIE_LC_SPEED_CNTL);
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -4353,8 +4353,6 @@ static void r600_pcie_gen2_enable(struct
{
u32 link_width_cntl, lanes, speed_cntl, training_cntl, tmp;
u16 link_cntl2;
- u32 mask;
- int ret;
if (radeon_pcie_gen2 == 0)
return;
@@ -4373,11 +4371,8 @@ static void r600_pcie_gen2_enable(struct
if (rdev->family <= CHIP_R600)
return;
- ret = drm_pcie_get_speed_cap_mask(rdev->ddev, &mask);
- if (ret != 0)
- return;
-
- if (!(mask & DRM_PCIE_SPEED_50))
+ if ((rdev->pdev->bus->max_bus_speed != PCIE_SPEED_5_0GT) &&
+ (rdev->pdev->bus->max_bus_speed != PCIE_SPEED_8_0GT))
return;
speed_cntl = RREG32_PCIE_P(PCIE_LC_SPEED_CNTL);
--- a/drivers/gpu/drm/radeon/rv770.c
+++ b/drivers/gpu/drm/radeon/rv770.c
@@ -1240,8 +1240,6 @@ static void rv770_pcie_gen2_enable(struc
{
u32 link_width_cntl, lanes, speed_cntl, tmp;
u16 link_cntl2;
- u32 mask;
- int ret;
if (radeon_pcie_gen2 == 0)
return;
@@ -1256,11 +1254,8 @@ static void rv770_pcie_gen2_enable(struc
if (ASIC_IS_X2(rdev))
return;
- ret = drm_pcie_get_speed_cap_mask(rdev->ddev, &mask);
- if (ret != 0)
- return;
-
- if (!(mask & DRM_PCIE_SPEED_50))
+ if ((rdev->pdev->bus->max_bus_speed != PCIE_SPEED_5_0GT) &&
+ (rdev->pdev->bus->max_bus_speed != PCIE_SPEED_8_0GT))
return;
DRM_INFO("enabling PCIE gen 2 link speeds, disable with radeon.pcie_gen2=0\n");
--
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