rs690/r500: vblank support.

The new display controller has the vblank interrupts in a different place.

Add support for vbl interrupts for these chips

2 files changed, 177 insertions, 49 deletions

diff --git a/shared-core/radeon_drv.h b/shared-core/radeon_drv.h
index c5a84439d..4f04f30f5 100644
--- a/shared-core/radeon_drv.h
+++ b/shared-core/radeon_drv.h
@@ -296,6 +296,7 @@ typedef struct drm_radeon_private {
 	int vblank_crtc;
 	uint32_t irq_enable_reg;
 	int irq_enabled;
+	uint32_t r500_disp_irq_reg;
 
 	struct radeon_surface surfaces[RADEON_MAX_SURFACES];
 	struct radeon_virt_surface virt_surfaces[2 * RADEON_MAX_SURFACES];
@@ -620,6 +621,8 @@ extern int r300_do_cp_cmdbuf(struct drm_device *dev,
 #	define RADEON_SW_INT_TEST		(1 << 25)
 #	define RADEON_SW_INT_TEST_ACK		(1 << 25)
 #	define RADEON_SW_INT_FIRE		(1 << 26)
+#       define R500_DISPLAY_INT_STATUS          (1 << 0)
+
 
 #define RADEON_HOST_PATH_CNTL		0x0130
 #	define RADEON_HDP_SOFT_RESET		(1 << 26)
@@ -1139,7 +1142,30 @@ extern int r300_do_cp_cmdbuf(struct drm_device *dev,
 #define RADEON_VHA_BACKFRAME0_OFF_V_2            0x1894
 #define RADEON_VHA_BACKFRAME1_OFF_PITCH_V_2      0x1898
 
+#define R500_D1CRTC_STATUS 0x609c
+#define R500_D2CRTC_STATUS 0x689c
+#define R500_CRTC_V_BLANK (1<<0)
+
+#define R500_D1CRTC_FRAME_COUNT 0x60a4
+#define R500_D2CRTC_FRAME_COUNT 0x68a4
+
+#define R500_D1MODE_V_COUNTER 0x6530
+#define R500_D2MODE_V_COUNTER 0x6d30
+
+#define R500_D1MODE_VBLANK_STATUS 0x6534
+#define R500_D2MODE_VBLANK_STATUS 0x6d34
+#define R500_VBLANK_OCCURED (1<<0)
+#define R500_VBLANK_ACK     (1<<4)
+#define R500_VBLANK_STAT    (1<<12)
+#define R500_VBLANK_INT     (1<<16)
+
+#define R500_DxMODE_INT_MASK 0x6540
+#define R500_D1MODE_INT_MASK (1<<0)
+#define R500_D2MODE_INT_MASK (1<<8)
 
+#define R500_DISP_INTERRUPT_STATUS 0x7edc
+#define R500_D1_VBLANK_INTERRUPT (1 << 4)
+#define R500_D2_VBLANK_INTERRUPT (1 << 5)
 
 /* Constants */
 #define RADEON_MAX_USEC_TIMEOUT		100000	/* 100 ms */
diff --git a/shared-core/radeon_irq.c b/shared-core/radeon_irq.c
index 79e4e8665..d21761fb6 100644
--- a/shared-core/radeon_irq.c
+++ b/shared-core/radeon_irq.c
@@ -47,19 +47,48 @@ static void radeon_irq_set_state(struct drm_device *dev, u32 mask, int state)
 	RADEON_WRITE(RADEON_GEN_INT_CNTL, dev_priv->irq_enable_reg);
 }
 
+static void r500_vbl_irq_set_state(struct drm_device *dev, u32 mask, int state)
+{
+	drm_radeon_private_t *dev_priv = dev->dev_private;
+
+	if (state)
+		dev_priv->r500_disp_irq_reg |= mask;
+	else
+		dev_priv->r500_disp_irq_reg &= ~mask;
+
+	RADEON_WRITE(R500_DxMODE_INT_MASK, dev_priv->r500_disp_irq_reg);
+}
+
 int radeon_enable_vblank(struct drm_device *dev, int crtc)
 {
-	switch (crtc) {
-	case 0:
-		radeon_irq_set_state(dev, RADEON_CRTC_VBLANK_MASK, 1);
-		break;
-	case 1:
-		radeon_irq_set_state(dev, RADEON_CRTC2_VBLANK_MASK, 1);
-		break;
-	default:
-		DRM_ERROR("tried to enable vblank on non-existent crtc %d\n",
-			  crtc);
-		return EINVAL;
+	drm_radeon_private_t *dev_priv = dev->dev_private;
+
+	if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_RS690) {	
+		switch (crtc) {
+		case 0:
+			r500_vbl_irq_set_state(dev, R500_D1MODE_INT_MASK, 1);
+			break;
+		case 1:
+			r500_vbl_irq_set_state(dev, R500_D2MODE_INT_MASK, 1);
+			break;
+		default:
+			DRM_ERROR("tried to enable vblank on non-existent crtc %d\n",
+				  crtc);
+			return EINVAL;
+		}
+	} else {
+		switch (crtc) {
+		case 0:
+			radeon_irq_set_state(dev, RADEON_CRTC_VBLANK_MASK, 1);
+			break;
+		case 1:
+			radeon_irq_set_state(dev, RADEON_CRTC2_VBLANK_MASK, 1);
+			break;
+		default:
+			DRM_ERROR("tried to enable vblank on non-existent crtc %d\n",
+				  crtc);
+			return EINVAL;
+		}
 	}
 
 	return 0;
@@ -67,29 +96,69 @@ int radeon_enable_vblank(struct drm_device *dev, int crtc)
 
 void radeon_disable_vblank(struct drm_device *dev, int crtc)
 {
-	switch (crtc) {
-	case 0:
-		radeon_irq_set_state(dev, RADEON_CRTC_VBLANK_MASK, 0);
-		break;
-	case 1:
-		radeon_irq_set_state(dev, RADEON_CRTC2_VBLANK_MASK, 0);
-		break;
-	default:
-		DRM_ERROR("tried to enable vblank on non-existent crtc %d\n",
-			  crtc);
-		break;
+	drm_radeon_private_t *dev_priv = dev->dev_private;
+
+	if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_RS690) {	
+		switch (crtc) {
+		case 0:
+			r500_vbl_irq_set_state(dev, R500_D1MODE_INT_MASK, 0);
+			break;
+		case 1:
+			r500_vbl_irq_set_state(dev, R500_D2MODE_INT_MASK, 0);
+			break;
+		default:
+			DRM_ERROR("tried to enable vblank on non-existent crtc %d\n",
+				  crtc);
+			break;
+		}
+	} else {
+		switch (crtc) {
+		case 0:
+			radeon_irq_set_state(dev, RADEON_CRTC_VBLANK_MASK, 0);
+			break;
+		case 1:
+			radeon_irq_set_state(dev, RADEON_CRTC2_VBLANK_MASK, 0);
+			break;
+		default:
+			DRM_ERROR("tried to enable vblank on non-existent crtc %d\n",
+				  crtc);
+			break;
+		}
 	}
 }
 
-static __inline__ u32 radeon_acknowledge_irqs(drm_radeon_private_t * dev_priv)
+static __inline__ u32 radeon_acknowledge_irqs(drm_radeon_private_t * dev_priv, u32 *r500_disp_int)
 {
-	u32 irqs = RADEON_READ(RADEON_GEN_INT_STATUS) &
-		(RADEON_SW_INT_TEST | RADEON_CRTC_VBLANK_STAT |
-		 RADEON_CRTC2_VBLANK_STAT);
+	u32 irqs = RADEON_READ(RADEON_GEN_INT_STATUS);
+	u32 irq_mask = RADEON_SW_INT_TEST;
+
+	*r500_disp_int = 0;
+	if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_RS690) {
+		/* vbl interrupts in a different place */
+
+		if (irqs & R500_DISPLAY_INT_STATUS) {
+			/* if a display interrupt */
+			u32 disp_irq;
+
+			disp_irq = RADEON_READ(R500_DISP_INTERRUPT_STATUS);
+
+			*r500_disp_int = disp_irq;
+			if (disp_irq & R500_D1_VBLANK_INTERRUPT) {
+				RADEON_WRITE(R500_D1MODE_VBLANK_STATUS, R500_VBLANK_ACK);
+			}
+			if (disp_irq & R500_D2_VBLANK_INTERRUPT) {
+				RADEON_WRITE(R500_D2MODE_VBLANK_STATUS, R500_VBLANK_ACK);
+			}
+		}
+		irq_mask |= R500_DISPLAY_INT_STATUS;
+	} else
+		irq_mask |= RADEON_CRTC_VBLANK_STAT | RADEON_CRTC2_VBLANK_STAT;
+
+	irqs &=	irq_mask;
 
 	if (irqs)
 		RADEON_WRITE(RADEON_GEN_INT_STATUS, irqs);
-
+	
 	return irqs;
 }
 
@@ -117,11 +186,12 @@ irqreturn_t radeon_driver_irq_handler(DRM_IRQ_ARGS)
 	drm_radeon_private_t *dev_priv =
 	    (drm_radeon_private_t *) dev->dev_private;
 	u32 stat;
+	u32 r500_disp_int;
 
 	/* Only consider the bits we're interested in - others could be used
 	 * outside the DRM
 	 */
-	stat = radeon_acknowledge_irqs(dev_priv);
+	stat = radeon_acknowledge_irqs(dev_priv, &r500_disp_int);
 	if (!stat)
 		return IRQ_NONE;
 
@@ -132,11 +202,17 @@ irqreturn_t radeon_driver_irq_handler(DRM_IRQ_ARGS)
 		DRM_WAKEUP(&dev_priv->swi_queue);
 
 	/* VBLANK interrupt */
-	if (stat & RADEON_CRTC_VBLANK_STAT)
-		drm_handle_vblank(dev, 0);
-	if (stat & RADEON_CRTC2_VBLANK_STAT)
-		drm_handle_vblank(dev, 1);
-
+	if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_RS690) {
+		if (r500_disp_int & R500_D1_VBLANK_INTERRUPT)
+			drm_handle_vblank(dev, 0);
+		if (r500_disp_int & R500_D2_VBLANK_INTERRUPT)
+			drm_handle_vblank(dev, 1);
+	} else {
+		if (stat & RADEON_CRTC_VBLANK_STAT)
+			drm_handle_vblank(dev, 0);
+		if (stat & RADEON_CRTC2_VBLANK_STAT)
+			drm_handle_vblank(dev, 1);
+	}
 	return IRQ_HANDLED;
 }
 
@@ -185,17 +261,29 @@ u32 radeon_get_vblank_counter(struct drm_device *dev, int crtc)
 		return -EINVAL;
 	}
 
-	if (crtc == 0) {
-		crtc_cnt_reg = RADEON_CRTC_CRNT_FRAME;
-		crtc_status_reg = RADEON_CRTC_STATUS;
-	} else if (crtc == 1) {
-		crtc_cnt_reg = RADEON_CRTC2_CRNT_FRAME;
-		crtc_status_reg = RADEON_CRTC2_STATUS;
+	if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_RS690) {
+		if (crtc == 0) {
+			crtc_cnt_reg = R500_D1CRTC_FRAME_COUNT;
+			crtc_status_reg = R500_D1CRTC_STATUS;
+		} else if (crtc == 1) {
+			crtc_cnt_reg = R500_D2CRTC_FRAME_COUNT;
+			crtc_status_reg = R500_D2CRTC_STATUS;
+		} else
+			return -EINVAL;
+		return RADEON_READ(crtc_cnt_reg) + (RADEON_READ(crtc_status_reg) & 1);
+			
 	} else {
-		return -EINVAL;
+		if (crtc == 0) {
+			crtc_cnt_reg = RADEON_CRTC_CRNT_FRAME;
+			crtc_status_reg = RADEON_CRTC_STATUS;
+		} else if (crtc == 1) {
+			crtc_cnt_reg = RADEON_CRTC2_CRNT_FRAME;
+			crtc_status_reg = RADEON_CRTC2_STATUS;
+		} else {
+			return -EINVAL;
+		}
+		return RADEON_READ(crtc_cnt_reg) + (RADEON_READ(crtc_status_reg) & 1);
 	}
-
-	return RADEON_READ(crtc_cnt_reg) + (RADEON_READ(crtc_status_reg) & 1);
 }
 
 /* Needs the lock as it touches the ring.
@@ -244,12 +332,15 @@ void radeon_driver_irq_preinstall(struct drm_device * dev)
 {
 	drm_radeon_private_t *dev_priv =
 	    (drm_radeon_private_t *) dev->dev_private;
+	u32 dummy;
 
 	/* Disable *all* interrupts */
+	if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_RS690)
+		RADEON_WRITE(R500_DxMODE_INT_MASK, 0);
 	RADEON_WRITE(RADEON_GEN_INT_CNTL, 0);
 
 	/* Clear bits if they're already high */
-	radeon_acknowledge_irqs(dev_priv);
+	radeon_acknowledge_irqs(dev_priv, &dummy);
 }
 
 int radeon_driver_irq_postinstall(struct drm_device * dev)
@@ -281,6 +372,8 @@ void radeon_driver_irq_uninstall(struct drm_device * dev)
 
 	dev_priv->irq_enabled = 0;
 
+	if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_RS690)
+		RADEON_WRITE(R500_DxMODE_INT_MASK, 0);
 	/* Disable *all* interrupts */
 	RADEON_WRITE(RADEON_GEN_INT_CNTL, 0);
 }
@@ -292,14 +385,23 @@ int radeon_vblank_crtc_get(struct drm_device *dev)
 	u32 flag;
 	u32 value;
 
-	flag = RADEON_READ(RADEON_GEN_INT_CNTL);
-	value = 0;
+	if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_RS690) {
+		flag = RADEON_READ(R500_DxMODE_INT_MASK);
+		value = 0;
+		if (flag & R500_D1MODE_INT_MASK)
+			value |= DRM_RADEON_VBLANK_CRTC1;
 
-	if (flag & RADEON_CRTC_VBLANK_MASK)
-		value |= DRM_RADEON_VBLANK_CRTC1;
+		if (flag & R500_D2MODE_INT_MASK)
+			value |= DRM_RADEON_VBLANK_CRTC2;
+	} else {
+		flag = RADEON_READ(RADEON_GEN_INT_CNTL);
+		value = 0;
+		if (flag & RADEON_CRTC_VBLANK_MASK)
+			value |= DRM_RADEON_VBLANK_CRTC1;
 
-	if (flag & RADEON_CRTC2_VBLANK_MASK)
-		value |= DRM_RADEON_VBLANK_CRTC2;
+		if (flag & RADEON_CRTC2_VBLANK_MASK)
+			value |= DRM_RADEON_VBLANK_CRTC2;
+	}
 	return value;
 }