drm/radeon: add a module parameter to disable aspm
Can cause hangs when enabled in certain motherboards.
Set radeon.aspm=0 to disable aspm.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index 526e428..038dcac 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -5515,6 +5515,9 @@
*/
bool fusion_platform = false;
+ if (radeon_aspm == 0)
+ return;
+
if (!(rdev->flags & RADEON_IS_PCIE))
return;
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index 0010817..2f08219 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -97,6 +97,7 @@
extern int radeon_lockup_timeout;
extern int radeon_fastfb;
extern int radeon_dpm;
+extern int radeon_aspm;
/*
* Copy from radeon_drv.h so we don't have to include both and have conflicting
diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c
index e5419b3..29876b1 100644
--- a/drivers/gpu/drm/radeon/radeon_drv.c
+++ b/drivers/gpu/drm/radeon/radeon_drv.c
@@ -167,6 +167,7 @@
int radeon_lockup_timeout = 10000;
int radeon_fastfb = 0;
int radeon_dpm = -1;
+int radeon_aspm = -1;
MODULE_PARM_DESC(no_wb, "Disable AGP writeback for scratch registers");
module_param_named(no_wb, radeon_no_wb, int, 0444);
@@ -225,6 +226,9 @@
MODULE_PARM_DESC(dpm, "DPM support (1 = enable, 0 = disable, -1 = auto)");
module_param_named(dpm, radeon_dpm, int, 0444);
+MODULE_PARM_DESC(aspm, "ASPM support (1 = enable, 0 = disable, -1 = auto)");
+module_param_named(aspm, radeon_aspm, int, 0444);
+
static struct pci_device_id pciidlist[] = {
radeon_PCI_IDS
};
diff --git a/drivers/gpu/drm/radeon/rv6xx_dpm.c b/drivers/gpu/drm/radeon/rv6xx_dpm.c
index 8303de2..65e33f3 100644
--- a/drivers/gpu/drm/radeon/rv6xx_dpm.c
+++ b/drivers/gpu/drm/radeon/rv6xx_dpm.c
@@ -1763,12 +1763,14 @@
{
r600_enable_acpi_pm(rdev);
- if (rdev->pm.dpm.platform_caps & ATOM_PP_PLATFORM_CAP_ASPM_L0s)
- rv6xx_enable_l0s(rdev);
- if (rdev->pm.dpm.platform_caps & ATOM_PP_PLATFORM_CAP_ASPM_L1)
- rv6xx_enable_l1(rdev);
- if (rdev->pm.dpm.platform_caps & ATOM_PP_PLATFORM_CAP_TURNOFFPLL_ASPML1)
- rv6xx_enable_pll_sleep_in_l1(rdev);
+ if (radeon_aspm != 0) {
+ if (rdev->pm.dpm.platform_caps & ATOM_PP_PLATFORM_CAP_ASPM_L0s)
+ rv6xx_enable_l0s(rdev);
+ if (rdev->pm.dpm.platform_caps & ATOM_PP_PLATFORM_CAP_ASPM_L1)
+ rv6xx_enable_l1(rdev);
+ if (rdev->pm.dpm.platform_caps & ATOM_PP_PLATFORM_CAP_TURNOFFPLL_ASPML1)
+ rv6xx_enable_pll_sleep_in_l1(rdev);
+ }
}
void rv6xx_dpm_display_configuration_changed(struct radeon_device *rdev)
diff --git a/drivers/gpu/drm/radeon/rv770_dpm.c b/drivers/gpu/drm/radeon/rv770_dpm.c
index d914e04..2d34792 100644
--- a/drivers/gpu/drm/radeon/rv770_dpm.c
+++ b/drivers/gpu/drm/radeon/rv770_dpm.c
@@ -2099,12 +2099,14 @@
rv770_enable_acpi_pm(rdev);
- if (rdev->pm.dpm.platform_caps & ATOM_PP_PLATFORM_CAP_ASPM_L0s)
- rv770_enable_l0s(rdev);
- if (rdev->pm.dpm.platform_caps & ATOM_PP_PLATFORM_CAP_ASPM_L1)
- rv770_enable_l1(rdev);
- if (rdev->pm.dpm.platform_caps & ATOM_PP_PLATFORM_CAP_TURNOFFPLL_ASPML1)
- rv770_enable_pll_sleep_in_l1(rdev);
+ if (radeon_aspm != 0) {
+ if (rdev->pm.dpm.platform_caps & ATOM_PP_PLATFORM_CAP_ASPM_L0s)
+ rv770_enable_l0s(rdev);
+ if (rdev->pm.dpm.platform_caps & ATOM_PP_PLATFORM_CAP_ASPM_L1)
+ rv770_enable_l1(rdev);
+ if (rdev->pm.dpm.platform_caps & ATOM_PP_PLATFORM_CAP_TURNOFFPLL_ASPML1)
+ rv770_enable_pll_sleep_in_l1(rdev);
+ }
}
void rv770_dpm_display_configuration_changed(struct radeon_device *rdev)
diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c
index d3f0507..d325280 100644
--- a/drivers/gpu/drm/radeon/si.c
+++ b/drivers/gpu/drm/radeon/si.c
@@ -7053,6 +7053,9 @@
bool disable_l0s = false, disable_l1 = false, disable_plloff_in_l1 = false;
bool disable_clkreq = false;
+ if (radeon_aspm == 0)
+ return;
+
if (!(rdev->flags & RADEON_IS_PCIE))
return;