drm/radeon/kms: r600/r700 disable irq at suspend

To avoid hw doing anythings after we disabled PCIE GART, fully
disable IRQ at suspend. Also cleanup a bit the ih structure
and process function.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Reviewed-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@linux.ie>

diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index b3713f6..a6a23a9 100644 (file)
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -1954,6 +1954,7 @@ int r600_suspend(struct radeon_device *rdev)
        /* FIXME: we should wait for ring to be empty */
        r600_cp_stop(rdev);
        rdev->cp.ready = false;
+       r600_irq_suspend(rdev);
        r600_wb_disable(rdev);
        r600_pcie_gart_disable(rdev);
        /* unpin shaders bo */
@@ -2200,14 +2201,14 @@ void r600_ih_ring_init(struct radeon_device *rdev, unsigned ring_size)
        rb_bufsz = drm_order(ring_size / 4);
        ring_size = (1 << rb_bufsz) * 4;
        rdev->ih.ring_size = ring_size;
-       rdev->ih.align_mask = 4 - 1;
+       rdev->ih.ptr_mask = rdev->ih.ring_size - 1;
+       rdev->ih.rptr = 0;
 }
 
-static int r600_ih_ring_alloc(struct radeon_device *rdev, unsigned ring_size)
+static int r600_ih_ring_alloc(struct radeon_device *rdev)
 {
        int r;
 
-       rdev->ih.ring_size = ring_size;
        /* Allocate ring buffer */
        if (rdev->ih.ring_obj == NULL) {
                r = radeon_bo_create(rdev, NULL, rdev->ih.ring_size,
@@ -2237,9 +2238,6 @@ static int r600_ih_ring_alloc(struct radeon_device *rdev, unsigned ring_size)
                        return r;
                }
        }
-       rdev->ih.ptr_mask = (rdev->cp.ring_size / 4) - 1;
-       rdev->ih.rptr = 0;
-
        return 0;
 }
 
@@ -2389,7 +2387,7 @@ int r600_irq_init(struct radeon_device *rdev)
        u32 interrupt_cntl, ih_cntl, ih_rb_cntl;
 
        /* allocate ring */
-       ret = r600_ih_ring_alloc(rdev, rdev->ih.ring_size);
+       ret = r600_ih_ring_alloc(rdev);
        if (ret)
                return ret;
 
@@ -2452,10 +2450,15 @@ int r600_irq_init(struct radeon_device *rdev)
        return ret;
 }
 
-void r600_irq_fini(struct radeon_device *rdev)
+void r600_irq_suspend(struct radeon_device *rdev)
 {
        r600_disable_interrupts(rdev);
        r600_rlc_stop(rdev);
+}
+
+void r600_irq_fini(struct radeon_device *rdev)
+{
+       r600_irq_suspend(rdev);
        r600_ih_ring_fini(rdev);
 }
 
@@ -2648,9 +2651,7 @@ static inline u32 r600_get_ih_wptr(struct radeon_device *rdev)
                tmp |= IH_WPTR_OVERFLOW_CLEAR;
                WREG32(IH_RB_CNTL, tmp);
        }
-       wptr = wptr & WPTR_OFFSET_MASK;
-
-       return wptr;
+       return (wptr & rdev->ih.ptr_mask);
 }
 
 /*        r600 IV Ring
@@ -2686,7 +2687,6 @@ int r600_irq_process(struct radeon_device *rdev)
        u32 wptr = r600_get_ih_wptr(rdev);
        u32 rptr = rdev->ih.rptr;
        u32 src_id, src_data;
-       u32 last_entry = rdev->ih.ring_size - 16;
        u32 ring_index, disp_int, disp_int_cont, disp_int_cont2;
        unsigned long flags;
        bool queue_hotplug = false;
@@ -2820,10 +2820,8 @@ restart_ih:
                }
 
                /* wptr/rptr are in bytes! */
-               if (rptr == last_entry)
-                       rptr = 0;
-               else
-                       rptr += 16;
+               rptr += 16;
+               rptr &= rdev->ih.ptr_mask;
        }
        /* make sure wptr hasn't changed while processing */
        wptr = r600_get_ih_wptr(rdev);

diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index c232782..09c655f 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -410,7 +410,6 @@ struct r600_ih {
        unsigned                wptr_old;
        unsigned                ring_size;
        uint64_t                gpu_addr;
-       uint32_t                align_mask;
        uint32_t                ptr_mask;
        spinlock_t              lock;
        bool                    enabled;
@@ -1162,7 +1161,8 @@ extern int r600_irq_init(struct radeon_device *rdev);
 extern void r600_irq_fini(struct radeon_device *rdev);
 extern void r600_ih_ring_init(struct radeon_device *rdev, unsigned ring_size);
 extern int r600_irq_set(struct radeon_device *rdev);
-
+extern void r600_irq_suspend(struct radeon_device *rdev);
+/* r600 audio */
 extern int r600_audio_init(struct radeon_device *rdev);
 extern int r600_audio_tmds_index(struct drm_encoder *encoder);
 extern void r600_audio_set_clock(struct drm_encoder *encoder, int clock);

diff --git a/drivers/gpu/drm/radeon/rv770.c b/drivers/gpu/drm/radeon/rv770.c
index eb065bb..c8cf2bc 100644 (file)
--- a/drivers/gpu/drm/radeon/rv770.c
+++ b/drivers/gpu/drm/radeon/rv770.c
@@ -968,6 +968,7 @@ int rv770_suspend(struct radeon_device *rdev)
        /* FIXME: we should wait for ring to be empty */
        r700_cp_stop(rdev);
        rdev->cp.ready = false;
+       r600_irq_suspend(rdev);
        r600_wb_disable(rdev);
        rv770_pcie_gart_disable(rdev);
        /* unpin shaders bo */