Merge branch 'modesetting-gem'

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);
+}