drm/radeon/kms: properly set accel working flag and bailout when false

If accel is not working many subsystem such as the ib pool might not be
initialized properly that can lead to segfault inside kernel when cs
ioctl is call with non working acceleration. To avoid this make sure
the accel working flag is false when an error in GPU startup happen and
return EBUSY from cs ioctl if accel is not working.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index 9be353b..f58254a 100644 (file)
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -3223,6 +3223,7 @@ int evergreen_resume(struct radeon_device *rdev)
        r = evergreen_startup(rdev);
        if (r) {
                DRM_ERROR("evergreen startup failed on resume\n");
+               rdev->accel_working = false;
                return r;
        }
 

diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c
index db09065..2509c50 100644 (file)
--- a/drivers/gpu/drm/radeon/ni.c
+++ b/drivers/gpu/drm/radeon/ni.c
@@ -1547,6 +1547,7 @@ int cayman_resume(struct radeon_device *rdev)
        r = cayman_startup(rdev);
        if (r) {
                DRM_ERROR("cayman startup failed on resume\n");
+               rdev->accel_working = false;
                return r;
        }
        return r;

diff --git a/drivers/gpu/drm/radeon/r100.c b/drivers/gpu/drm/radeon/r100.c
index 18cd84f..333cde9 100644 (file)
--- a/drivers/gpu/drm/radeon/r100.c
+++ b/drivers/gpu/drm/radeon/r100.c
@@ -3928,6 +3928,8 @@ static int r100_startup(struct radeon_device *rdev)
 
 int r100_resume(struct radeon_device *rdev)
 {
+       int r;
+
        /* Make sur GART are not working */
        if (rdev->flags & RADEON_IS_PCI)
                r100_pci_gart_disable(rdev);
@@ -3947,7 +3949,11 @@ int r100_resume(struct radeon_device *rdev)
        radeon_surface_init(rdev);
 
        rdev->accel_working = true;
-       return r100_startup(rdev);
+       r = r100_startup(rdev);
+       if (r) {
+               rdev->accel_working = false;
+       }
+       return r;
 }
 
 int r100_suspend(struct radeon_device *rdev)

diff --git a/drivers/gpu/drm/radeon/r300.c b/drivers/gpu/drm/radeon/r300.c
index 3fc0d29..6829638 100644 (file)
--- a/drivers/gpu/drm/radeon/r300.c
+++ b/drivers/gpu/drm/radeon/r300.c
@@ -1431,6 +1431,8 @@ static int r300_startup(struct radeon_device *rdev)
 
 int r300_resume(struct radeon_device *rdev)
 {
+       int r;
+
        /* Make sur GART are not working */
        if (rdev->flags & RADEON_IS_PCIE)
                rv370_pcie_gart_disable(rdev);
@@ -1452,7 +1454,11 @@ int r300_resume(struct radeon_device *rdev)
        radeon_surface_init(rdev);
 
        rdev->accel_working = true;
-       return r300_startup(rdev);
+       r = r300_startup(rdev);
+       if (r) {
+               rdev->accel_working = false;
+       }
+       return r;
 }
 
 int r300_suspend(struct radeon_device *rdev)

diff --git a/drivers/gpu/drm/radeon/r420.c b/drivers/gpu/drm/radeon/r420.c
index 666e28f..b143230 100644 (file)
--- a/drivers/gpu/drm/radeon/r420.c
+++ b/drivers/gpu/drm/radeon/r420.c
@@ -291,6 +291,8 @@ static int r420_startup(struct radeon_device *rdev)
 
 int r420_resume(struct radeon_device *rdev)
 {
+       int r;
+
        /* Make sur GART are not working */
        if (rdev->flags & RADEON_IS_PCIE)
                rv370_pcie_gart_disable(rdev);
@@ -316,7 +318,11 @@ int r420_resume(struct radeon_device *rdev)
        radeon_surface_init(rdev);
 
        rdev->accel_working = true;
-       return r420_startup(rdev);
+       r = r420_startup(rdev);
+       if (r) {
+               rdev->accel_working = false;
+       }
+       return r;
 }
 
 int r420_suspend(struct radeon_device *rdev)

diff --git a/drivers/gpu/drm/radeon/r520.c b/drivers/gpu/drm/radeon/r520.c
index 4ae1615..25084e8 100644 (file)
--- a/drivers/gpu/drm/radeon/r520.c
+++ b/drivers/gpu/drm/radeon/r520.c
@@ -218,6 +218,8 @@ static int r520_startup(struct radeon_device *rdev)
 
 int r520_resume(struct radeon_device *rdev)
 {
+       int r;
+
        /* Make sur GART are not working */
        if (rdev->flags & RADEON_IS_PCIE)
                rv370_pcie_gart_disable(rdev);
@@ -237,7 +239,11 @@ int r520_resume(struct radeon_device *rdev)
        radeon_surface_init(rdev);
 
        rdev->accel_working = true;
-       return r520_startup(rdev);
+       r = r520_startup(rdev);
+       if (r) {
+               rdev->accel_working = false;
+       }
+       return r;
 }
 
 int r520_init(struct radeon_device *rdev)

diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index 4f08e5e..fbcd848 100644 (file)
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -2529,6 +2529,7 @@ int r600_resume(struct radeon_device *rdev)
        r = r600_startup(rdev);
        if (r) {
                DRM_ERROR("r600 startup failed on resume\n");
+               rdev->accel_working = false;
                return r;
        }
 

diff --git a/drivers/gpu/drm/radeon/radeon_cs.c b/drivers/gpu/drm/radeon/radeon_cs.c
index 435a3d9..e64bec4 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_cs.c
+++ b/drivers/gpu/drm/radeon/radeon_cs.c
@@ -453,6 +453,10 @@ int radeon_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
        int r;
 
        radeon_mutex_lock(&rdev->cs_mutex);
+       if (!rdev->accel_working) {
+               radeon_mutex_unlock(&rdev->cs_mutex);
+               return -EBUSY;
+       }
        /* initialize parser */
        memset(&parser, 0, sizeof(struct radeon_cs_parser));
        parser.filp = filp;

diff --git a/drivers/gpu/drm/radeon/rs400.c b/drivers/gpu/drm/radeon/rs400.c
index b0ce84a..866a05b 100644 (file)
--- a/drivers/gpu/drm/radeon/rs400.c
+++ b/drivers/gpu/drm/radeon/rs400.c
@@ -442,6 +442,8 @@ static int rs400_startup(struct radeon_device *rdev)
 
 int rs400_resume(struct radeon_device *rdev)
 {
+       int r;
+
        /* Make sur GART are not working */
        rs400_gart_disable(rdev);
        /* Resume clock before doing reset */
@@ -462,7 +464,11 @@ int rs400_resume(struct radeon_device *rdev)
        radeon_surface_init(rdev);
 
        rdev->accel_working = true;
-       return rs400_startup(rdev);
+       r = rs400_startup(rdev);
+       if (r) {
+               rdev->accel_working = false;
+       }
+       return r;
 }
 
 int rs400_suspend(struct radeon_device *rdev)

diff --git a/drivers/gpu/drm/radeon/rs600.c b/drivers/gpu/drm/radeon/rs600.c
index c05865e..4fc7006 100644 (file)
--- a/drivers/gpu/drm/radeon/rs600.c
+++ b/drivers/gpu/drm/radeon/rs600.c
@@ -876,6 +876,8 @@ static int rs600_startup(struct radeon_device *rdev)
 
 int rs600_resume(struct radeon_device *rdev)
 {
+       int r;
+
        /* Make sur GART are not working */
        rs600_gart_disable(rdev);
        /* Resume clock before doing reset */
@@ -894,7 +896,11 @@ int rs600_resume(struct radeon_device *rdev)
        radeon_surface_init(rdev);
 
        rdev->accel_working = true;
-       return rs600_startup(rdev);
+       r = rs600_startup(rdev);
+       if (r) {
+               rdev->accel_working = false;
+       }
+       return r;
 }
 
 int rs600_suspend(struct radeon_device *rdev)

diff --git a/drivers/gpu/drm/radeon/rs690.c b/drivers/gpu/drm/radeon/rs690.c
index 4f24a0f..f68dff2 100644 (file)
--- a/drivers/gpu/drm/radeon/rs690.c
+++ b/drivers/gpu/drm/radeon/rs690.c
@@ -659,6 +659,8 @@ static int rs690_startup(struct radeon_device *rdev)
 
 int rs690_resume(struct radeon_device *rdev)
 {
+       int r;
+
        /* Make sur GART are not working */
        rs400_gart_disable(rdev);
        /* Resume clock before doing reset */
@@ -677,7 +679,11 @@ int rs690_resume(struct radeon_device *rdev)
        radeon_surface_init(rdev);
 
        rdev->accel_working = true;
-       return rs690_startup(rdev);
+       r = rs690_startup(rdev);
+       if (r) {
+               rdev->accel_working = false;
+       }
+       return r;
 }
 
 int rs690_suspend(struct radeon_device *rdev)

diff --git a/drivers/gpu/drm/radeon/rv515.c b/drivers/gpu/drm/radeon/rv515.c
index 880637f..959bf44 100644 (file)
--- a/drivers/gpu/drm/radeon/rv515.c
+++ b/drivers/gpu/drm/radeon/rv515.c
@@ -424,6 +424,8 @@ static int rv515_startup(struct radeon_device *rdev)
 
 int rv515_resume(struct radeon_device *rdev)
 {
+       int r;
+
        /* Make sur GART are not working */
        if (rdev->flags & RADEON_IS_PCIE)
                rv370_pcie_gart_disable(rdev);
@@ -443,7 +445,11 @@ int rv515_resume(struct radeon_device *rdev)
        radeon_surface_init(rdev);
 
        rdev->accel_working = true;
-       return rv515_startup(rdev);
+       r =  rv515_startup(rdev);
+       if (r) {
+               rdev->accel_working = false;
+       }
+       return r;
 }
 
 int rv515_suspend(struct radeon_device *rdev)

diff --git a/drivers/gpu/drm/radeon/rv770.c b/drivers/gpu/drm/radeon/rv770.c
index a1668b6..c049c0c 100644 (file)
--- a/drivers/gpu/drm/radeon/rv770.c
+++ b/drivers/gpu/drm/radeon/rv770.c
@@ -1139,6 +1139,7 @@ int rv770_resume(struct radeon_device *rdev)
        r = rv770_startup(rdev);
        if (r) {
                DRM_ERROR("r600 startup failed on resume\n");
+               rdev->accel_working = false;
                return r;
        }