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path: root/drivers/gpu/drm/radeon/radeon_irq_kms.c
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Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_irq_kms.c')
-rw-r--r--drivers/gpu/drm/radeon/radeon_irq_kms.c158
1 files changed, 158 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_irq_kms.c b/drivers/gpu/drm/radeon/radeon_irq_kms.c
new file mode 100644
index 00000000000..491d569deb0
--- /dev/null
+++ b/drivers/gpu/drm/radeon/radeon_irq_kms.c
@@ -0,0 +1,158 @@
+/*
+ * Copyright 2008 Advanced Micro Devices, Inc.
+ * Copyright 2008 Red Hat Inc.
+ * Copyright 2009 Jerome Glisse.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Dave Airlie
+ * Alex Deucher
+ * Jerome Glisse
+ */
+#include "drmP.h"
+#include "radeon_drm.h"
+#include "radeon_reg.h"
+#include "radeon_microcode.h"
+#include "radeon.h"
+#include "atom.h"
+
+static inline uint32_t r100_irq_ack(struct radeon_device *rdev)
+{
+ uint32_t irqs = RREG32(RADEON_GEN_INT_STATUS);
+ uint32_t irq_mask = RADEON_SW_INT_TEST;
+
+ if (irqs) {
+ WREG32(RADEON_GEN_INT_STATUS, irqs);
+ }
+ return irqs & irq_mask;
+}
+
+int r100_irq_set(struct radeon_device *rdev)
+{
+ uint32_t tmp = 0;
+
+ if (rdev->irq.sw_int) {
+ tmp |= RADEON_SW_INT_ENABLE;
+ }
+ /* Todo go through CRTC and enable vblank int or not */
+ WREG32(RADEON_GEN_INT_CNTL, tmp);
+ return 0;
+}
+
+int r100_irq_process(struct radeon_device *rdev)
+{
+ uint32_t status;
+
+ status = r100_irq_ack(rdev);
+ if (!status) {
+ return IRQ_NONE;
+ }
+ while (status) {
+ /* SW interrupt */
+ if (status & RADEON_SW_INT_TEST) {
+ radeon_fence_process(rdev);
+ }
+ status = r100_irq_ack(rdev);
+ }
+ return IRQ_HANDLED;
+}
+
+int rs600_irq_set(struct radeon_device *rdev)
+{
+ uint32_t tmp = 0;
+
+ if (rdev->irq.sw_int) {
+ tmp |= RADEON_SW_INT_ENABLE;
+ }
+ WREG32(RADEON_GEN_INT_CNTL, tmp);
+ /* Todo go through CRTC and enable vblank int or not */
+ WREG32(R500_DxMODE_INT_MASK, 0);
+ return 0;
+}
+
+irqreturn_t radeon_driver_irq_handler_kms(DRM_IRQ_ARGS)
+{
+ struct drm_device *dev = (struct drm_device *) arg;
+ struct radeon_device *rdev = dev->dev_private;
+
+ return radeon_irq_process(rdev);
+}
+
+void radeon_driver_irq_preinstall_kms(struct drm_device *dev)
+{
+ struct radeon_device *rdev = dev->dev_private;
+ unsigned i;
+
+ /* Disable *all* interrupts */
+ rdev->irq.sw_int = false;
+ for (i = 0; i < 2; i++) {
+ rdev->irq.crtc_vblank_int[i] = false;
+ }
+ radeon_irq_set(rdev);
+ /* Clear bits */
+ radeon_irq_process(rdev);
+}
+
+int radeon_driver_irq_postinstall_kms(struct drm_device *dev)
+{
+ struct radeon_device *rdev = dev->dev_private;
+
+ dev->max_vblank_count = 0x001fffff;
+ rdev->irq.sw_int = true;
+ radeon_irq_set(rdev);
+ return 0;
+}
+
+void radeon_driver_irq_uninstall_kms(struct drm_device *dev)
+{
+ struct radeon_device *rdev = dev->dev_private;
+ unsigned i;
+
+ if (rdev == NULL) {
+ return;
+ }
+ /* Disable *all* interrupts */
+ rdev->irq.sw_int = false;
+ for (i = 0; i < 2; i++) {
+ rdev->irq.crtc_vblank_int[i] = false;
+ }
+ radeon_irq_set(rdev);
+}
+
+int radeon_irq_kms_init(struct radeon_device *rdev)
+{
+ int r = 0;
+
+ r = drm_vblank_init(rdev->ddev, 2);
+ if (r) {
+ return r;
+ }
+ drm_irq_install(rdev->ddev);
+ rdev->irq.installed = true;
+ DRM_INFO("radeon: irq initialized.\n");
+ return 0;
+}
+
+void radeon_irq_kms_fini(struct radeon_device *rdev)
+{
+ if (rdev->irq.installed) {
+ rdev->irq.installed = false;
+ drm_irq_uninstall(rdev->ddev);
+ }
+}