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authorJesse Barnes <jbarnes@virtuousgeek.org>2008-12-09 10:23:43 -0800
committerJesse Barnes <jbarnes@virtuousgeek.org>2008-12-09 10:23:43 -0800
commit6656db10551bbb8770dd945b6d81d5138521f208 (patch)
tree68e457660c174ee2e16353691126ddd754c79398 /shared-core/radeon_ms_irq.c
parentc99566fb810c9d8cae5e9cd39d1772b55e2f514c (diff)
parent12e68f8059485fb4f02a15f74ab2fa3bdff38c81 (diff)
Merge branch 'modesetting-gem'
Diffstat (limited to 'shared-core/radeon_ms_irq.c')
-rw-r--r--shared-core/radeon_ms_irq.c161
1 files changed, 161 insertions, 0 deletions
diff --git a/shared-core/radeon_ms_irq.c b/shared-core/radeon_ms_irq.c
new file mode 100644
index 00000000..5c68c902
--- /dev/null
+++ b/shared-core/radeon_ms_irq.c
@@ -0,0 +1,161 @@
+/*
+ * Copyright 2007 Jérôme Glisse
+ * Copyright 2007 Alex Deucher
+ * Copyright 2007 Dave Airlie
+ * All Rights Reserved.
+ *
+ * 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 (including the next
+ * paragraph) 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
+ * PRECISION INSIGHT AND/OR ITS SUPPLIERS 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:
+ * Jerome Glisse <glisse@freedesktop.org>
+ */
+#include "drmP.h"
+#include "drm.h"
+#include "radeon_ms.h"
+
+static uint32_t radeon_ack_irqs(struct drm_radeon_private *dev_priv,
+ uint32_t mask)
+{
+ uint32_t irqs;
+
+ irqs = MMIO_R(GEN_INT_STATUS);
+ if (irqs) {
+ MMIO_W(GEN_INT_STATUS, irqs);
+ }
+ if (irqs & (~mask)) {
+ /* reprogram irq */
+ MMIO_W(GEN_INT_CNTL, dev_priv->driver_state.gen_int_cntl);
+ }
+ return irqs;
+}
+
+void radeon_ms_irq_emit(struct drm_device *dev)
+{
+ struct drm_radeon_private *dev_priv = dev->dev_private;
+ uint32_t cmd[4];
+ int i, ret;
+
+ cmd[0] = CP_PACKET0(GEN_INT_CNTL, 1);
+ cmd[1] = dev_priv->driver_state.gen_int_cntl | GEN_INT_CNTL__SW_INT_EN;
+ cmd[2] = GEN_INT_STATUS__SW_INT_SET;
+ /* try to wait but if we timeout we likely are in bad situation */
+ for (i = 0; i < dev_priv->usec_timeout; i++) {
+ ret = radeon_ms_ring_emit(dev, cmd, 3);
+ if (!ret) {
+ break;
+ }
+ }
+}
+
+static void radeon_ms_irq_enable(struct drm_device *dev)
+{
+ struct drm_radeon_private *dev_priv = dev->dev_private;
+ struct radeon_state *state = &dev_priv->driver_state;
+
+ state->gen_int_cntl = GEN_INT_CNTL__SW_INT_EN;
+ radeon_ms_irq_restore(dev, state);
+}
+
+irqreturn_t radeon_ms_irq_handler(DRM_IRQ_ARGS)
+{
+ struct drm_device *dev = (struct drm_device *)arg;
+ struct drm_radeon_private *dev_priv = dev->dev_private;
+ uint32_t status, mask;
+
+ /* Only consider the bits we're interested in - others could be used
+ * outside the DRM
+ */
+ mask = GEN_INT_STATUS__SW_INT |
+ GEN_INT_STATUS__CRTC_VBLANK_STAT |
+ GEN_INT_STATUS__CRTC2_VBLANK_STAT;
+ status = radeon_ack_irqs(dev_priv, mask);
+ if (!status) {
+ return IRQ_NONE;
+ }
+
+ /* SW interrupt */
+ if (GEN_INT_STATUS__SW_INT & status) {
+ r3xx_fence_handler(dev);
+ }
+ r3xx_fence_handler(dev);
+ return IRQ_HANDLED;
+}
+
+void radeon_ms_irq_preinstall(struct drm_device * dev)
+{
+ struct drm_radeon_private *dev_priv = dev->dev_private;
+ struct radeon_state *state = &dev_priv->driver_state;
+ uint32_t mask;
+
+ /* Disable *all* interrupts */
+ state->gen_int_cntl = 0;
+ radeon_ms_irq_restore(dev, state);
+
+ /* Clear bits if they're already high */
+ mask = GEN_INT_STATUS__SW_INT |
+ GEN_INT_STATUS__CRTC_VBLANK_STAT |
+ GEN_INT_STATUS__CRTC2_VBLANK_STAT;
+ radeon_ack_irqs(dev_priv, mask);
+}
+
+int radeon_ms_irq_postinstall(struct drm_device * dev)
+{
+ radeon_ms_irq_enable(dev);
+ return 0;
+}
+
+int radeon_ms_irq_init(struct drm_device *dev)
+{
+ struct drm_radeon_private *dev_priv = dev->dev_private;
+ struct radeon_state *state = &dev_priv->driver_state;
+
+ /* Disable *all* interrupts */
+ state->gen_int_cntl = 0;
+ radeon_ms_irq_restore(dev, state);
+ return 0;
+}
+
+void radeon_ms_irq_restore(struct drm_device *dev, struct radeon_state *state)
+{
+ struct drm_radeon_private *dev_priv = dev->dev_private;
+
+ MMIO_W(GEN_INT_CNTL, state->gen_int_cntl);
+}
+
+void radeon_ms_irq_save(struct drm_device *dev, struct radeon_state *state)
+{
+ struct drm_radeon_private *dev_priv = dev->dev_private;
+
+ state->gen_int_cntl = MMIO_R(GEN_INT_CNTL);
+}
+
+void radeon_ms_irq_uninstall(struct drm_device * dev)
+{
+ struct drm_radeon_private *dev_priv = dev->dev_private;
+ struct radeon_state *state = &dev_priv->driver_state;
+
+ if (dev_priv == NULL) {
+ return;
+ }
+
+ /* Disable *all* interrupts */
+ state->gen_int_cntl = 0;
+ radeon_ms_irq_restore(dev, state);
+}