Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit f122c610 authored by Alex Deucher's avatar Alex Deucher Committed by Dave Airlie
Browse files

drm/radeon/kms: fix up audio interrupt handling 



- add support for rs6xx
- add support for DCE4/5
- fixup 6xx/7xx

Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent 3a2a67aa

drivers/gpu/drm/radeon/evergreen.c

+128 −0
Original line number Original line Diff line number Diff line
@@ -2594,6 +2594,7 @@ int evergreen_irq_set(struct radeon_device *rdev) 
	u32 hpd1, hpd2, hpd3, hpd4, hpd5, hpd6;

	u32 hpd1, hpd2, hpd3, hpd4, hpd5, hpd6;

	u32 grbm_int_cntl = 0;

	u32 grbm_int_cntl = 0;

	u32 grph1 = 0, grph2 = 0, grph3 = 0, grph4 = 0, grph5 = 0, grph6 = 0;

	u32 grph1 = 0, grph2 = 0, grph3 = 0, grph4 = 0, grph5 = 0, grph6 = 0;

	u32 afmt1 = 0, afmt2 = 0, afmt3 = 0, afmt4 = 0, afmt5 = 0, afmt6 = 0;





	if (!rdev->irq.installed) {

	if (!rdev->irq.installed) {

		WARN(1, "Can't enable IRQ/MSI because no handler is installed\n");

		WARN(1, "Can't enable IRQ/MSI because no handler is installed\n");
@@ -2614,6 +2615,13 @@ int evergreen_irq_set(struct radeon_device *rdev) 
	hpd5 = RREG32(DC_HPD5_INT_CONTROL) & ~DC_HPDx_INT_EN;

	hpd5 = RREG32(DC_HPD5_INT_CONTROL) & ~DC_HPDx_INT_EN;

	hpd6 = RREG32(DC_HPD6_INT_CONTROL) & ~DC_HPDx_INT_EN;

	hpd6 = RREG32(DC_HPD6_INT_CONTROL) & ~DC_HPDx_INT_EN;





	afmt1 = RREG32(AFMT_AUDIO_PACKET_CONTROL + EVERGREEN_CRTC0_REGISTER_OFFSET) & ~AFMT_AZ_FORMAT_WTRIG_MASK;

	afmt2 = RREG32(AFMT_AUDIO_PACKET_CONTROL + EVERGREEN_CRTC1_REGISTER_OFFSET) & ~AFMT_AZ_FORMAT_WTRIG_MASK;

	afmt3 = RREG32(AFMT_AUDIO_PACKET_CONTROL + EVERGREEN_CRTC2_REGISTER_OFFSET) & ~AFMT_AZ_FORMAT_WTRIG_MASK;

	afmt4 = RREG32(AFMT_AUDIO_PACKET_CONTROL + EVERGREEN_CRTC3_REGISTER_OFFSET) & ~AFMT_AZ_FORMAT_WTRIG_MASK;

	afmt5 = RREG32(AFMT_AUDIO_PACKET_CONTROL + EVERGREEN_CRTC4_REGISTER_OFFSET) & ~AFMT_AZ_FORMAT_WTRIG_MASK;

	afmt6 = RREG32(AFMT_AUDIO_PACKET_CONTROL + EVERGREEN_CRTC5_REGISTER_OFFSET) & ~AFMT_AZ_FORMAT_WTRIG_MASK;



	if (rdev->family >= CHIP_CAYMAN) {

	if (rdev->family >= CHIP_CAYMAN) {

		/* enable CP interrupts on all rings */

		/* enable CP interrupts on all rings */

		if (rdev->irq.sw_int[RADEON_RING_TYPE_GFX_INDEX]) {

		if (rdev->irq.sw_int[RADEON_RING_TYPE_GFX_INDEX]) {
@@ -2690,6 +2698,30 @@ int evergreen_irq_set(struct radeon_device *rdev) 
		DRM_DEBUG("evergreen_irq_set: hpd 6\n");

		DRM_DEBUG("evergreen_irq_set: hpd 6\n");

		hpd6 |= DC_HPDx_INT_EN;

		hpd6 |= DC_HPDx_INT_EN;

	}

	}

	if (rdev->irq.afmt[0]) {

		DRM_DEBUG("evergreen_irq_set: hdmi 0\n");

		afmt1 |= AFMT_AZ_FORMAT_WTRIG_MASK;

	}

	if (rdev->irq.afmt[1]) {

		DRM_DEBUG("evergreen_irq_set: hdmi 1\n");

		afmt2 |= AFMT_AZ_FORMAT_WTRIG_MASK;

	}

	if (rdev->irq.afmt[2]) {

		DRM_DEBUG("evergreen_irq_set: hdmi 2\n");

		afmt3 |= AFMT_AZ_FORMAT_WTRIG_MASK;

	}

	if (rdev->irq.afmt[3]) {

		DRM_DEBUG("evergreen_irq_set: hdmi 3\n");

		afmt4 |= AFMT_AZ_FORMAT_WTRIG_MASK;

	}

	if (rdev->irq.afmt[4]) {

		DRM_DEBUG("evergreen_irq_set: hdmi 4\n");

		afmt5 |= AFMT_AZ_FORMAT_WTRIG_MASK;

	}

	if (rdev->irq.afmt[5]) {

		DRM_DEBUG("evergreen_irq_set: hdmi 5\n");

		afmt6 |= AFMT_AZ_FORMAT_WTRIG_MASK;

	}

	if (rdev->irq.gui_idle) {

	if (rdev->irq.gui_idle) {

		DRM_DEBUG("gui idle\n");

		DRM_DEBUG("gui idle\n");

		grbm_int_cntl |= GUI_IDLE_INT_ENABLE;

		grbm_int_cntl |= GUI_IDLE_INT_ENABLE;
@@ -2732,6 +2764,13 @@ int evergreen_irq_set(struct radeon_device *rdev) 
	WREG32(DC_HPD5_INT_CONTROL, hpd5);

	WREG32(DC_HPD5_INT_CONTROL, hpd5);

	WREG32(DC_HPD6_INT_CONTROL, hpd6);

	WREG32(DC_HPD6_INT_CONTROL, hpd6);





	WREG32(AFMT_AUDIO_PACKET_CONTROL + EVERGREEN_CRTC0_REGISTER_OFFSET, afmt1);

	WREG32(AFMT_AUDIO_PACKET_CONTROL + EVERGREEN_CRTC1_REGISTER_OFFSET, afmt2);

	WREG32(AFMT_AUDIO_PACKET_CONTROL + EVERGREEN_CRTC2_REGISTER_OFFSET, afmt3);

	WREG32(AFMT_AUDIO_PACKET_CONTROL + EVERGREEN_CRTC3_REGISTER_OFFSET, afmt4);

	WREG32(AFMT_AUDIO_PACKET_CONTROL + EVERGREEN_CRTC4_REGISTER_OFFSET, afmt5);

	WREG32(AFMT_AUDIO_PACKET_CONTROL + EVERGREEN_CRTC5_REGISTER_OFFSET, afmt6);



	return 0;

	return 0;

}

}
@@ -2756,6 +2795,13 @@ static void evergreen_irq_ack(struct radeon_device *rdev) 
		rdev->irq.stat_regs.evergreen.d6grph_int = RREG32(GRPH_INT_STATUS + EVERGREEN_CRTC5_REGISTER_OFFSET);

		rdev->irq.stat_regs.evergreen.d6grph_int = RREG32(GRPH_INT_STATUS + EVERGREEN_CRTC5_REGISTER_OFFSET);

	}

	}





	rdev->irq.stat_regs.evergreen.afmt_status1 = RREG32(AFMT_STATUS + EVERGREEN_CRTC0_REGISTER_OFFSET);

	rdev->irq.stat_regs.evergreen.afmt_status2 = RREG32(AFMT_STATUS + EVERGREEN_CRTC1_REGISTER_OFFSET);

	rdev->irq.stat_regs.evergreen.afmt_status3 = RREG32(AFMT_STATUS + EVERGREEN_CRTC2_REGISTER_OFFSET);

	rdev->irq.stat_regs.evergreen.afmt_status4 = RREG32(AFMT_STATUS + EVERGREEN_CRTC3_REGISTER_OFFSET);

	rdev->irq.stat_regs.evergreen.afmt_status5 = RREG32(AFMT_STATUS + EVERGREEN_CRTC4_REGISTER_OFFSET);

	rdev->irq.stat_regs.evergreen.afmt_status6 = RREG32(AFMT_STATUS + EVERGREEN_CRTC5_REGISTER_OFFSET);



	if (rdev->irq.stat_regs.evergreen.d1grph_int & GRPH_PFLIP_INT_OCCURRED)

	if (rdev->irq.stat_regs.evergreen.d1grph_int & GRPH_PFLIP_INT_OCCURRED)

		WREG32(GRPH_INT_STATUS + EVERGREEN_CRTC0_REGISTER_OFFSET, GRPH_PFLIP_INT_CLEAR);

		WREG32(GRPH_INT_STATUS + EVERGREEN_CRTC0_REGISTER_OFFSET, GRPH_PFLIP_INT_CLEAR);

	if (rdev->irq.stat_regs.evergreen.d2grph_int & GRPH_PFLIP_INT_OCCURRED)

	if (rdev->irq.stat_regs.evergreen.d2grph_int & GRPH_PFLIP_INT_OCCURRED)
@@ -2829,6 +2875,36 @@ static void evergreen_irq_ack(struct radeon_device *rdev) 
		tmp |= DC_HPDx_INT_ACK;

		tmp |= DC_HPDx_INT_ACK;

		WREG32(DC_HPD6_INT_CONTROL, tmp);

		WREG32(DC_HPD6_INT_CONTROL, tmp);

	}

	}

	if (rdev->irq.stat_regs.evergreen.afmt_status1 & AFMT_AZ_FORMAT_WTRIG) {

		tmp = RREG32(AFMT_AUDIO_PACKET_CONTROL + EVERGREEN_CRTC0_REGISTER_OFFSET);

		tmp |= AFMT_AZ_FORMAT_WTRIG_ACK;

		WREG32(AFMT_AUDIO_PACKET_CONTROL + EVERGREEN_CRTC0_REGISTER_OFFSET, tmp);

	}

	if (rdev->irq.stat_regs.evergreen.afmt_status2 & AFMT_AZ_FORMAT_WTRIG) {

		tmp = RREG32(AFMT_AUDIO_PACKET_CONTROL + EVERGREEN_CRTC1_REGISTER_OFFSET);

		tmp |= AFMT_AZ_FORMAT_WTRIG_ACK;

		WREG32(AFMT_AUDIO_PACKET_CONTROL + EVERGREEN_CRTC1_REGISTER_OFFSET, tmp);

	}

	if (rdev->irq.stat_regs.evergreen.afmt_status3 & AFMT_AZ_FORMAT_WTRIG) {

		tmp = RREG32(AFMT_AUDIO_PACKET_CONTROL + EVERGREEN_CRTC2_REGISTER_OFFSET);

		tmp |= AFMT_AZ_FORMAT_WTRIG_ACK;

		WREG32(AFMT_AUDIO_PACKET_CONTROL + EVERGREEN_CRTC2_REGISTER_OFFSET, tmp);

	}

	if (rdev->irq.stat_regs.evergreen.afmt_status4 & AFMT_AZ_FORMAT_WTRIG) {

		tmp = RREG32(AFMT_AUDIO_PACKET_CONTROL + EVERGREEN_CRTC3_REGISTER_OFFSET);

		tmp |= AFMT_AZ_FORMAT_WTRIG_ACK;

		WREG32(AFMT_AUDIO_PACKET_CONTROL + EVERGREEN_CRTC3_REGISTER_OFFSET, tmp);

	}

	if (rdev->irq.stat_regs.evergreen.afmt_status5 & AFMT_AZ_FORMAT_WTRIG) {

		tmp = RREG32(AFMT_AUDIO_PACKET_CONTROL + EVERGREEN_CRTC4_REGISTER_OFFSET);

		tmp |= AFMT_AZ_FORMAT_WTRIG_ACK;

		WREG32(AFMT_AUDIO_PACKET_CONTROL + EVERGREEN_CRTC4_REGISTER_OFFSET, tmp);

	}

	if (rdev->irq.stat_regs.evergreen.afmt_status6 & AFMT_AZ_FORMAT_WTRIG) {

		tmp = RREG32(AFMT_AUDIO_PACKET_CONTROL + EVERGREEN_CRTC5_REGISTER_OFFSET);

		tmp |= AFMT_AZ_FORMAT_WTRIG_ACK;

		WREG32(AFMT_AUDIO_PACKET_CONTROL + EVERGREEN_CRTC5_REGISTER_OFFSET, tmp);

	}

}

}





void evergreen_irq_disable(struct radeon_device *rdev)

void evergreen_irq_disable(struct radeon_device *rdev)
@@ -2878,6 +2954,7 @@ int evergreen_irq_process(struct radeon_device *rdev) 
	u32 ring_index;

	u32 ring_index;

	unsigned long flags;

	unsigned long flags;

	bool queue_hotplug = false;

	bool queue_hotplug = false;

	bool queue_hdmi = false;





	if (!rdev->ih.enabled || rdev->shutdown)

	if (!rdev->ih.enabled || rdev->shutdown)

		return IRQ_NONE;

		return IRQ_NONE;
@@ -3111,6 +3188,55 @@ int evergreen_irq_process(struct radeon_device *rdev) 
				break;

				break;

			}

			}

			break;

			break;

		case 44: /* hdmi */

			switch (src_data) {

			case 0:

				if (rdev->irq.stat_regs.evergreen.afmt_status1 & AFMT_AZ_FORMAT_WTRIG) {

					rdev->irq.stat_regs.evergreen.afmt_status1 &= ~AFMT_AZ_FORMAT_WTRIG;

					queue_hdmi = true;

					DRM_DEBUG("IH: HDMI0\n");

				}

				break;

			case 1:

				if (rdev->irq.stat_regs.evergreen.afmt_status2 & AFMT_AZ_FORMAT_WTRIG) {

					rdev->irq.stat_regs.evergreen.afmt_status2 &= ~AFMT_AZ_FORMAT_WTRIG;

					queue_hdmi = true;

					DRM_DEBUG("IH: HDMI1\n");

				}

				break;

			case 2:

				if (rdev->irq.stat_regs.evergreen.afmt_status3 & AFMT_AZ_FORMAT_WTRIG) {

					rdev->irq.stat_regs.evergreen.afmt_status3 &= ~AFMT_AZ_FORMAT_WTRIG;

					queue_hdmi = true;

					DRM_DEBUG("IH: HDMI2\n");

				}

				break;

			case 3:

				if (rdev->irq.stat_regs.evergreen.afmt_status4 & AFMT_AZ_FORMAT_WTRIG) {

					rdev->irq.stat_regs.evergreen.afmt_status4 &= ~AFMT_AZ_FORMAT_WTRIG;

					queue_hdmi = true;

					DRM_DEBUG("IH: HDMI3\n");

				}

				break;

			case 4:

				if (rdev->irq.stat_regs.evergreen.afmt_status5 & AFMT_AZ_FORMAT_WTRIG) {

					rdev->irq.stat_regs.evergreen.afmt_status5 &= ~AFMT_AZ_FORMAT_WTRIG;

					queue_hdmi = true;

					DRM_DEBUG("IH: HDMI4\n");

				}

				break;

			case 5:

				if (rdev->irq.stat_regs.evergreen.afmt_status6 & AFMT_AZ_FORMAT_WTRIG) {

					rdev->irq.stat_regs.evergreen.afmt_status6 &= ~AFMT_AZ_FORMAT_WTRIG;

					queue_hdmi = true;

					DRM_DEBUG("IH: HDMI5\n");

				}

				break;

			default:

				DRM_ERROR("Unhandled interrupt: %d %d\n", src_id, src_data);

				break;

			}

			break;

		case 176: /* CP_INT in ring buffer */

		case 176: /* CP_INT in ring buffer */

		case 177: /* CP_INT in IB1 */

		case 177: /* CP_INT in IB1 */

		case 178: /* CP_INT in IB2 */

		case 178: /* CP_INT in IB2 */
@@ -3154,6 +3280,8 @@ int evergreen_irq_process(struct radeon_device *rdev) 
		goto restart_ih;

		goto restart_ih;

	if (queue_hotplug)

	if (queue_hotplug)

		schedule_work(&rdev->hotplug_work);

		schedule_work(&rdev->hotplug_work);

	if (queue_hdmi)

		schedule_work(&rdev->audio_work);

	rdev->ih.rptr = rptr;

	rdev->ih.rptr = rptr;

	WREG32(IH_RB_RPTR, rdev->ih.rptr);

	WREG32(IH_RB_RPTR, rdev->ih.rptr);

	spin_unlock_irqrestore(&rdev->ih.lock, flags);

	spin_unlock_irqrestore(&rdev->ih.lock, flags);

drivers/gpu/drm/radeon/r600.c

+90 −25
Original line number Original line Diff line number Diff line
@@ -2968,6 +2968,15 @@ static void r600_disable_interrupt_state(struct radeon_device *rdev) 
			WREG32(DC_HPD5_INT_CONTROL, tmp);

			WREG32(DC_HPD5_INT_CONTROL, tmp);

			tmp = RREG32(DC_HPD6_INT_CONTROL) & DC_HPDx_INT_POLARITY;

			tmp = RREG32(DC_HPD6_INT_CONTROL) & DC_HPDx_INT_POLARITY;

			WREG32(DC_HPD6_INT_CONTROL, tmp);

			WREG32(DC_HPD6_INT_CONTROL, tmp);

			tmp = RREG32(AFMT_AUDIO_PACKET_CONTROL + HDMI_OFFSET0) & ~HDMI0_AZ_FORMAT_WTRIG_MASK;

			WREG32(AFMT_AUDIO_PACKET_CONTROL + HDMI_OFFSET0, tmp);

			tmp = RREG32(AFMT_AUDIO_PACKET_CONTROL + HDMI_OFFSET1) & ~HDMI0_AZ_FORMAT_WTRIG_MASK;

			WREG32(AFMT_AUDIO_PACKET_CONTROL + HDMI_OFFSET1, tmp);

		} else {

			tmp = RREG32(HDMI0_AUDIO_PACKET_CONTROL) & ~HDMI0_AZ_FORMAT_WTRIG_MASK;

			WREG32(HDMI0_AUDIO_PACKET_CONTROL, tmp);

			tmp = RREG32(DCE3_HDMI1_AUDIO_PACKET_CONTROL) & ~HDMI0_AZ_FORMAT_WTRIG_MASK;

			WREG32(DCE3_HDMI1_AUDIO_PACKET_CONTROL, tmp);

		}

		}

	} else {

	} else {

		WREG32(DACA_AUTODETECT_INT_CONTROL, 0);

		WREG32(DACA_AUTODETECT_INT_CONTROL, 0);
@@ -2978,6 +2987,10 @@ static void r600_disable_interrupt_state(struct radeon_device *rdev) 
		WREG32(DC_HOT_PLUG_DETECT2_INT_CONTROL, tmp);

		WREG32(DC_HOT_PLUG_DETECT2_INT_CONTROL, tmp);

		tmp = RREG32(DC_HOT_PLUG_DETECT3_INT_CONTROL) & DC_HOT_PLUG_DETECTx_INT_POLARITY;

		tmp = RREG32(DC_HOT_PLUG_DETECT3_INT_CONTROL) & DC_HOT_PLUG_DETECTx_INT_POLARITY;

		WREG32(DC_HOT_PLUG_DETECT3_INT_CONTROL, tmp);

		WREG32(DC_HOT_PLUG_DETECT3_INT_CONTROL, tmp);

		tmp = RREG32(HDMI0_AUDIO_PACKET_CONTROL) & ~HDMI0_AZ_FORMAT_WTRIG_MASK;

		WREG32(HDMI0_AUDIO_PACKET_CONTROL, tmp);

		tmp = RREG32(HDMI1_AUDIO_PACKET_CONTROL) & ~HDMI0_AZ_FORMAT_WTRIG_MASK;

		WREG32(HDMI1_AUDIO_PACKET_CONTROL, tmp);

	}

	}

}

}
@@ -3074,7 +3087,7 @@ int r600_irq_set(struct radeon_device *rdev) 
	u32 mode_int = 0;

	u32 mode_int = 0;

	u32 hpd1, hpd2, hpd3, hpd4 = 0, hpd5 = 0, hpd6 = 0;

	u32 hpd1, hpd2, hpd3, hpd4 = 0, hpd5 = 0, hpd6 = 0;

	u32 grbm_int_cntl = 0;

	u32 grbm_int_cntl = 0;

	u32 hdmi1, hdmi2;

	u32 hdmi0, hdmi1;

	u32 d1grph = 0, d2grph = 0;

	u32 d1grph = 0, d2grph = 0;





	if (!rdev->irq.installed) {

	if (!rdev->irq.installed) {
@@ -3089,9 +3102,7 @@ int r600_irq_set(struct radeon_device *rdev) 
		return 0;

		return 0;

	}

	}





	hdmi1 = RREG32(R600_HDMI_BLOCK1 + R600_HDMI_CNTL) & ~R600_HDMI_INT_EN;

	if (ASIC_IS_DCE3(rdev)) {

	if (ASIC_IS_DCE3(rdev)) {

		hdmi2 = RREG32(R600_HDMI_BLOCK3 + R600_HDMI_CNTL) & ~R600_HDMI_INT_EN;

		hpd1 = RREG32(DC_HPD1_INT_CONTROL) & ~DC_HPDx_INT_EN;

		hpd1 = RREG32(DC_HPD1_INT_CONTROL) & ~DC_HPDx_INT_EN;

		hpd2 = RREG32(DC_HPD2_INT_CONTROL) & ~DC_HPDx_INT_EN;

		hpd2 = RREG32(DC_HPD2_INT_CONTROL) & ~DC_HPDx_INT_EN;

		hpd3 = RREG32(DC_HPD3_INT_CONTROL) & ~DC_HPDx_INT_EN;

		hpd3 = RREG32(DC_HPD3_INT_CONTROL) & ~DC_HPDx_INT_EN;
@@ -3099,12 +3110,18 @@ int r600_irq_set(struct radeon_device *rdev) 
		if (ASIC_IS_DCE32(rdev)) {

		if (ASIC_IS_DCE32(rdev)) {

			hpd5 = RREG32(DC_HPD5_INT_CONTROL) & ~DC_HPDx_INT_EN;

			hpd5 = RREG32(DC_HPD5_INT_CONTROL) & ~DC_HPDx_INT_EN;

			hpd6 = RREG32(DC_HPD6_INT_CONTROL) & ~DC_HPDx_INT_EN;

			hpd6 = RREG32(DC_HPD6_INT_CONTROL) & ~DC_HPDx_INT_EN;

			hdmi0 = RREG32(AFMT_AUDIO_PACKET_CONTROL + HDMI_OFFSET0) & ~AFMT_AZ_FORMAT_WTRIG_MASK;

			hdmi1 = RREG32(AFMT_AUDIO_PACKET_CONTROL + HDMI_OFFSET1) & ~AFMT_AZ_FORMAT_WTRIG_MASK;

		} else {

			hdmi0 = RREG32(HDMI0_AUDIO_PACKET_CONTROL) & ~HDMI0_AZ_FORMAT_WTRIG_MASK;

			hdmi1 = RREG32(DCE3_HDMI1_AUDIO_PACKET_CONTROL) & ~HDMI0_AZ_FORMAT_WTRIG_MASK;

		}

		}

	} else {

	} else {

		hdmi2 = RREG32(R600_HDMI_BLOCK2 + R600_HDMI_CNTL) & ~R600_HDMI_INT_EN;

		hpd1 = RREG32(DC_HOT_PLUG_DETECT1_INT_CONTROL) & ~DC_HPDx_INT_EN;

		hpd1 = RREG32(DC_HOT_PLUG_DETECT1_INT_CONTROL) & ~DC_HPDx_INT_EN;

		hpd2 = RREG32(DC_HOT_PLUG_DETECT2_INT_CONTROL) & ~DC_HPDx_INT_EN;

		hpd2 = RREG32(DC_HOT_PLUG_DETECT2_INT_CONTROL) & ~DC_HPDx_INT_EN;

		hpd3 = RREG32(DC_HOT_PLUG_DETECT3_INT_CONTROL) & ~DC_HPDx_INT_EN;

		hpd3 = RREG32(DC_HOT_PLUG_DETECT3_INT_CONTROL) & ~DC_HPDx_INT_EN;

		hdmi0 = RREG32(HDMI0_AUDIO_PACKET_CONTROL) & ~HDMI0_AZ_FORMAT_WTRIG_MASK;

		hdmi1 = RREG32(HDMI1_AUDIO_PACKET_CONTROL) & ~HDMI0_AZ_FORMAT_WTRIG_MASK;

	}

	}





	if (rdev->irq.sw_int[RADEON_RING_TYPE_GFX_INDEX]) {

	if (rdev->irq.sw_int[RADEON_RING_TYPE_GFX_INDEX]) {
@@ -3146,13 +3163,13 @@ int r600_irq_set(struct radeon_device *rdev) 
		DRM_DEBUG("r600_irq_set: hpd 6\n");

		DRM_DEBUG("r600_irq_set: hpd 6\n");

		hpd6 |= DC_HPDx_INT_EN;

		hpd6 |= DC_HPDx_INT_EN;

	}

	}

	if (rdev->irq.hdmi[0]) {

	if (rdev->irq.afmt[0]) {

		DRM_DEBUG("r600_irq_set: hdmi 1\n");

		DRM_DEBUG("r600_irq_set: hdmi 0\n");

		hdmi1 |= R600_HDMI_INT_EN;

		hdmi0 |= HDMI0_AZ_FORMAT_WTRIG_MASK;

	}

	}

	if (rdev->irq.hdmi[1]) {

	if (rdev->irq.afmt[1]) {

		DRM_DEBUG("r600_irq_set: hdmi 2\n");

		DRM_DEBUG("r600_irq_set: hdmi 0\n");

		hdmi2 |= R600_HDMI_INT_EN;

		hdmi1 |= HDMI0_AZ_FORMAT_WTRIG_MASK;

	}

	}

	if (rdev->irq.gui_idle) {

	if (rdev->irq.gui_idle) {

		DRM_DEBUG("gui idle\n");

		DRM_DEBUG("gui idle\n");
@@ -3164,9 +3181,7 @@ int r600_irq_set(struct radeon_device *rdev) 
	WREG32(D1GRPH_INTERRUPT_CONTROL, d1grph);

	WREG32(D1GRPH_INTERRUPT_CONTROL, d1grph);

	WREG32(D2GRPH_INTERRUPT_CONTROL, d2grph);

	WREG32(D2GRPH_INTERRUPT_CONTROL, d2grph);

	WREG32(GRBM_INT_CNTL, grbm_int_cntl);

	WREG32(GRBM_INT_CNTL, grbm_int_cntl);

	WREG32(R600_HDMI_BLOCK1 + R600_HDMI_CNTL, hdmi1);

	if (ASIC_IS_DCE3(rdev)) {

	if (ASIC_IS_DCE3(rdev)) {

		WREG32(R600_HDMI_BLOCK3 + R600_HDMI_CNTL, hdmi2);

		WREG32(DC_HPD1_INT_CONTROL, hpd1);

		WREG32(DC_HPD1_INT_CONTROL, hpd1);

		WREG32(DC_HPD2_INT_CONTROL, hpd2);

		WREG32(DC_HPD2_INT_CONTROL, hpd2);

		WREG32(DC_HPD3_INT_CONTROL, hpd3);

		WREG32(DC_HPD3_INT_CONTROL, hpd3);
@@ -3174,12 +3189,18 @@ int r600_irq_set(struct radeon_device *rdev) 
		if (ASIC_IS_DCE32(rdev)) {

		if (ASIC_IS_DCE32(rdev)) {

			WREG32(DC_HPD5_INT_CONTROL, hpd5);

			WREG32(DC_HPD5_INT_CONTROL, hpd5);

			WREG32(DC_HPD6_INT_CONTROL, hpd6);

			WREG32(DC_HPD6_INT_CONTROL, hpd6);

			WREG32(AFMT_AUDIO_PACKET_CONTROL + HDMI_OFFSET0, hdmi0);

			WREG32(AFMT_AUDIO_PACKET_CONTROL + HDMI_OFFSET1, hdmi1);

		} else {

			WREG32(HDMI0_AUDIO_PACKET_CONTROL, hdmi0);

			WREG32(DCE3_HDMI1_AUDIO_PACKET_CONTROL, hdmi1);

		}

		}

	} else {

	} else {

		WREG32(R600_HDMI_BLOCK2 + R600_HDMI_CNTL, hdmi2);

		WREG32(DC_HOT_PLUG_DETECT1_INT_CONTROL, hpd1);

		WREG32(DC_HOT_PLUG_DETECT1_INT_CONTROL, hpd1);

		WREG32(DC_HOT_PLUG_DETECT2_INT_CONTROL, hpd2);

		WREG32(DC_HOT_PLUG_DETECT2_INT_CONTROL, hpd2);

		WREG32(DC_HOT_PLUG_DETECT3_INT_CONTROL, hpd3);

		WREG32(DC_HOT_PLUG_DETECT3_INT_CONTROL, hpd3);

		WREG32(HDMI0_AUDIO_PACKET_CONTROL, hdmi0);

		WREG32(HDMI1_AUDIO_PACKET_CONTROL, hdmi1);

	}

	}





	return 0;

	return 0;
@@ -3193,10 +3214,19 @@ static void r600_irq_ack(struct radeon_device *rdev) 
		rdev->irq.stat_regs.r600.disp_int = RREG32(DCE3_DISP_INTERRUPT_STATUS);

		rdev->irq.stat_regs.r600.disp_int = RREG32(DCE3_DISP_INTERRUPT_STATUS);

		rdev->irq.stat_regs.r600.disp_int_cont = RREG32(DCE3_DISP_INTERRUPT_STATUS_CONTINUE);

		rdev->irq.stat_regs.r600.disp_int_cont = RREG32(DCE3_DISP_INTERRUPT_STATUS_CONTINUE);

		rdev->irq.stat_regs.r600.disp_int_cont2 = RREG32(DCE3_DISP_INTERRUPT_STATUS_CONTINUE2);

		rdev->irq.stat_regs.r600.disp_int_cont2 = RREG32(DCE3_DISP_INTERRUPT_STATUS_CONTINUE2);

		if (ASIC_IS_DCE32(rdev)) {

			rdev->irq.stat_regs.r600.hdmi0_status = RREG32(AFMT_STATUS + HDMI_OFFSET0);

			rdev->irq.stat_regs.r600.hdmi1_status = RREG32(AFMT_STATUS + HDMI_OFFSET1);

		} else {

			rdev->irq.stat_regs.r600.hdmi0_status = RREG32(HDMI0_STATUS);

			rdev->irq.stat_regs.r600.hdmi1_status = RREG32(DCE3_HDMI1_STATUS);

		}

	} else {

	} else {

		rdev->irq.stat_regs.r600.disp_int = RREG32(DISP_INTERRUPT_STATUS);

		rdev->irq.stat_regs.r600.disp_int = RREG32(DISP_INTERRUPT_STATUS);

		rdev->irq.stat_regs.r600.disp_int_cont = RREG32(DISP_INTERRUPT_STATUS_CONTINUE);

		rdev->irq.stat_regs.r600.disp_int_cont = RREG32(DISP_INTERRUPT_STATUS_CONTINUE);

		rdev->irq.stat_regs.r600.disp_int_cont2 = 0;

		rdev->irq.stat_regs.r600.disp_int_cont2 = 0;

		rdev->irq.stat_regs.r600.hdmi0_status = RREG32(HDMI0_STATUS);

		rdev->irq.stat_regs.r600.hdmi1_status = RREG32(HDMI1_STATUS);

	}

	}

	rdev->irq.stat_regs.r600.d1grph_int = RREG32(D1GRPH_INTERRUPT_STATUS);

	rdev->irq.stat_regs.r600.d1grph_int = RREG32(D1GRPH_INTERRUPT_STATUS);

	rdev->irq.stat_regs.r600.d2grph_int = RREG32(D2GRPH_INTERRUPT_STATUS);

	rdev->irq.stat_regs.r600.d2grph_int = RREG32(D2GRPH_INTERRUPT_STATUS);
@@ -3262,17 +3292,32 @@ static void r600_irq_ack(struct radeon_device *rdev) 
			tmp |= DC_HPDx_INT_ACK;

			tmp |= DC_HPDx_INT_ACK;

			WREG32(DC_HPD6_INT_CONTROL, tmp);

			WREG32(DC_HPD6_INT_CONTROL, tmp);

		}

		}

		if (rdev->irq.stat_regs.r600.hdmi0_status & AFMT_AZ_FORMAT_WTRIG) {

			tmp = RREG32(AFMT_AUDIO_PACKET_CONTROL + HDMI_OFFSET0);

			tmp |= AFMT_AZ_FORMAT_WTRIG_ACK;

			WREG32(AFMT_AUDIO_PACKET_CONTROL + HDMI_OFFSET0, tmp);

		}

		}

	if (RREG32(R600_HDMI_BLOCK1 + R600_HDMI_STATUS) & R600_HDMI_INT_PENDING) {

		if (rdev->irq.stat_regs.r600.hdmi1_status & AFMT_AZ_FORMAT_WTRIG) {

		WREG32_P(R600_HDMI_BLOCK1 + R600_HDMI_CNTL, R600_HDMI_INT_ACK, ~R600_HDMI_INT_ACK);

			tmp = RREG32(AFMT_AUDIO_PACKET_CONTROL + HDMI_OFFSET1);

			tmp |= AFMT_AZ_FORMAT_WTRIG_ACK;

			WREG32(AFMT_AUDIO_PACKET_CONTROL + HDMI_OFFSET1, tmp);

		}

		}

	if (ASIC_IS_DCE3(rdev)) {

	} else {

		if (RREG32(R600_HDMI_BLOCK3 + R600_HDMI_STATUS) & R600_HDMI_INT_PENDING) {

		if (rdev->irq.stat_regs.r600.hdmi0_status & HDMI0_AZ_FORMAT_WTRIG) {

			WREG32_P(R600_HDMI_BLOCK3 + R600_HDMI_CNTL, R600_HDMI_INT_ACK, ~R600_HDMI_INT_ACK);

			tmp = RREG32(HDMI0_AUDIO_PACKET_CONTROL);

			tmp |= HDMI0_AZ_FORMAT_WTRIG_ACK;

			WREG32(HDMI0_AUDIO_PACKET_CONTROL, tmp);

		}

		}

		if (rdev->irq.stat_regs.r600.hdmi1_status & HDMI0_AZ_FORMAT_WTRIG) {

			if (ASIC_IS_DCE3(rdev)) {

				tmp = RREG32(DCE3_HDMI1_AUDIO_PACKET_CONTROL);

				tmp |= HDMI0_AZ_FORMAT_WTRIG_ACK;

				WREG32(DCE3_HDMI1_AUDIO_PACKET_CONTROL, tmp);

			} else {

			} else {

		if (RREG32(R600_HDMI_BLOCK2 + R600_HDMI_STATUS) & R600_HDMI_INT_PENDING) {

				tmp = RREG32(HDMI1_AUDIO_PACKET_CONTROL);

			WREG32_P(R600_HDMI_BLOCK2 + R600_HDMI_CNTL, R600_HDMI_INT_ACK, ~R600_HDMI_INT_ACK);

				tmp |= HDMI0_AZ_FORMAT_WTRIG_ACK;

				WREG32(HDMI1_AUDIO_PACKET_CONTROL, tmp);

			}

		}

		}

	}

	}

}

}
@@ -3348,6 +3393,7 @@ int r600_irq_process(struct radeon_device *rdev) 
	u32 ring_index;

	u32 ring_index;

	unsigned long flags;

	unsigned long flags;

	bool queue_hotplug = false;

	bool queue_hotplug = false;

	bool queue_hdmi = false;





	if (!rdev->ih.enabled || rdev->shutdown)

	if (!rdev->ih.enabled || rdev->shutdown)

		return IRQ_NONE;

		return IRQ_NONE;
@@ -3483,9 +3529,26 @@ int r600_irq_process(struct radeon_device *rdev) 
				break;

				break;

			}

			}

			break;

			break;

		case 21: /* HDMI */

		case 21: /* hdmi */

			DRM_DEBUG("IH: HDMI: 0x%x\n", src_data);

			switch (src_data) {

			r600_audio_schedule_polling(rdev);

			case 4:

				if (rdev->irq.stat_regs.r600.hdmi0_status & HDMI0_AZ_FORMAT_WTRIG) {

					rdev->irq.stat_regs.r600.hdmi0_status &= ~HDMI0_AZ_FORMAT_WTRIG;

					queue_hdmi = true;

					DRM_DEBUG("IH: HDMI0\n");

				}

				break;

			case 5:

				if (rdev->irq.stat_regs.r600.hdmi1_status & HDMI0_AZ_FORMAT_WTRIG) {

					rdev->irq.stat_regs.r600.hdmi1_status &= ~HDMI0_AZ_FORMAT_WTRIG;

					queue_hdmi = true;

					DRM_DEBUG("IH: HDMI1\n");

				}

				break;

			default:

				DRM_ERROR("Unhandled interrupt: %d %d\n", src_id, src_data);

				break;

			}

			break;

			break;

		case 176: /* CP_INT in ring buffer */

		case 176: /* CP_INT in ring buffer */

		case 177: /* CP_INT in IB1 */

		case 177: /* CP_INT in IB1 */
@@ -3517,6 +3580,8 @@ int r600_irq_process(struct radeon_device *rdev) 
		goto restart_ih;

		goto restart_ih;

	if (queue_hotplug)

	if (queue_hotplug)

		schedule_work(&rdev->hotplug_work);

		schedule_work(&rdev->hotplug_work);

	if (queue_hdmi)

		schedule_work(&rdev->audio_work);

	rdev->ih.rptr = rptr;

	rdev->ih.rptr = rptr;

	WREG32(IH_RB_RPTR, rdev->ih.rptr);

	WREG32(IH_RB_RPTR, rdev->ih.rptr);

	spin_unlock_irqrestore(&rdev->ih.lock, flags);

	spin_unlock_irqrestore(&rdev->ih.lock, flags);

drivers/gpu/drm/radeon/r600_audio.c

+5 −58
Original line number Original line Diff line number Diff line
@@ -29,8 +29,6 @@ 
#include "radeon_asic.h"

#include "radeon_asic.h"

#include "atom.h"

#include "atom.h"





#define AUDIO_TIMER_INTERVALL 100 /* 1/10 sekund should be enough */



/*

/*

 * check if the chipset is supported

 * check if the chipset is supported

 */

 */
@@ -105,21 +103,13 @@ uint8_t r600_audio_category_code(struct radeon_device *rdev) 
	return (RREG32(R600_AUDIO_STATUS_BITS) >> 8) & 0xff;

	return (RREG32(R600_AUDIO_STATUS_BITS) >> 8) & 0xff;

}

}





/*

 * schedule next audio update event

 */

void r600_audio_schedule_polling(struct radeon_device *rdev)

{

	mod_timer(&rdev->audio_timer,

		jiffies + msecs_to_jiffies(AUDIO_TIMER_INTERVALL));

}



/*

/*

 * update all hdmi interfaces with current audio parameters

 * update all hdmi interfaces with current audio parameters

 */

 */

static void r600_audio_update_hdmi(unsigned long param)

void r600_audio_update_hdmi(struct work_struct *work)

{

{

	struct radeon_device *rdev = (struct radeon_device *)param;

	struct radeon_device *rdev = container_of(work, struct radeon_device,

						  audio_work);

	struct drm_device *dev = rdev->ddev;

	struct drm_device *dev = rdev->ddev;





	int channels = r600_audio_channels(rdev);

	int channels = r600_audio_channels(rdev);
@@ -127,9 +117,8 @@ static void r600_audio_update_hdmi(unsigned long param) 
	int bps = r600_audio_bits_per_sample(rdev);

	int bps = r600_audio_bits_per_sample(rdev);

	uint8_t status_bits = r600_audio_status_bits(rdev);

	uint8_t status_bits = r600_audio_status_bits(rdev);

	uint8_t category_code = r600_audio_category_code(rdev);

	uint8_t category_code = r600_audio_category_code(rdev);



	struct drm_encoder *encoder;

	struct drm_encoder *encoder;

	int changes = 0, still_going = 0;

	int changes = 0;





	changes |= channels != rdev->audio_channels;

	changes |= channels != rdev->audio_channels;

	changes |= rate != rdev->audio_rate;

	changes |= rate != rdev->audio_rate;
@@ -146,14 +135,9 @@ static void r600_audio_update_hdmi(unsigned long param) 
	}

	}





	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {

	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {

		struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);

		still_going |= radeon_encoder->audio_polling_active;

		if (changes || r600_hdmi_buffer_status_changed(encoder))

		if (changes || r600_hdmi_buffer_status_changed(encoder))

			r600_hdmi_update_audio_settings(encoder);

			r600_hdmi_update_audio_settings(encoder);

	}

	}



	if (still_going)

		r600_audio_schedule_polling(rdev);

}

}





/*

/*
@@ -177,7 +161,7 @@ static void r600_audio_engine_enable(struct radeon_device *rdev, bool enable) 
}

}





/*

/*

 * initialize the audio vars and register the update timer

 * initialize the audio vars

 */

 */

int r600_audio_init(struct radeon_device *rdev)

int r600_audio_init(struct radeon_device *rdev)

{

{
@@ -192,44 +176,9 @@ int r600_audio_init(struct radeon_device *rdev) 
	rdev->audio_status_bits = 0;

	rdev->audio_status_bits = 0;

	rdev->audio_category_code = 0;

	rdev->audio_category_code = 0;





	setup_timer(

		&rdev->audio_timer,

		r600_audio_update_hdmi,

		(unsigned long)rdev);



	return 0;

	return 0;

}

}





/*

 * enable the polling timer, to check for status changes

 */

void r600_audio_enable_polling(struct drm_encoder *encoder)

{

	struct drm_device *dev = encoder->dev;

	struct radeon_device *rdev = dev->dev_private;

	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);



	DRM_DEBUG("r600_audio_enable_polling: %d\n",

		radeon_encoder->audio_polling_active);

	if (radeon_encoder->audio_polling_active)

		return;



	radeon_encoder->audio_polling_active = 1;

	if (rdev->audio_enabled)

		mod_timer(&rdev->audio_timer, jiffies + 1);

}



/*

 * disable the polling timer, so we get no more status updates

 */

void r600_audio_disable_polling(struct drm_encoder *encoder)

{

	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);

	DRM_DEBUG("r600_audio_disable_polling: %d\n",

		radeon_encoder->audio_polling_active);

	radeon_encoder->audio_polling_active = 0;

}



/*

/*

 * atach the audio codec to the clock source of the encoder

 * atach the audio codec to the clock source of the encoder

 */

 */
@@ -297,7 +246,5 @@ void r600_audio_fini(struct radeon_device *rdev) 
	if (!rdev->audio_enabled)

	if (!rdev->audio_enabled)

		return;

		return;





	del_timer(&rdev->audio_timer);



	r600_audio_engine_enable(rdev, false);

	r600_audio_engine_enable(rdev, false);

}
 
}

drivers/gpu/drm/radeon/r600_hdmi.c

+3 −14
Original line number Original line Diff line number Diff line
@@ -548,19 +548,10 @@ void r600_hdmi_enable(struct drm_encoder *encoder) 
		}

		}

	}

	}





	if (rdev->irq.installed

	if (rdev->irq.installed) {

	    && rdev->family != CHIP_RS600

	    && rdev->family != CHIP_RS690

	    && rdev->family != CHIP_RS740

	    && !ASIC_IS_DCE4(rdev)) {

		/* if irq is available use it */

		/* if irq is available use it */

		rdev->irq.hdmi[offset == R600_HDMI_BLOCK1 ? 0 : 1] = true;

		rdev->irq.afmt[offset == R600_HDMI_BLOCK1 ? 0 : 1] = true;

		radeon_irq_set(rdev);

		radeon_irq_set(rdev);



		r600_audio_disable_polling(encoder);

	} else {

		/* if not fallback to polling */

		r600_audio_enable_polling(encoder);

	}

	}





	DRM_DEBUG("Enabling HDMI interface @ 0x%04X for encoder 0x%x\n",

	DRM_DEBUG("Enabling HDMI interface @ 0x%04X for encoder 0x%x\n",
@@ -590,11 +581,9 @@ void r600_hdmi_disable(struct drm_encoder *encoder) 
		offset, radeon_encoder->encoder_id);

		offset, radeon_encoder->encoder_id);





	/* disable irq */

	/* disable irq */

	rdev->irq.hdmi[offset == R600_HDMI_BLOCK1 ? 0 : 1] = false;

	rdev->irq.afmt[offset == R600_HDMI_BLOCK1 ? 0 : 1] = false;

	radeon_irq_set(rdev);

	radeon_irq_set(rdev);





	/* disable polling */

	r600_audio_disable_polling(encoder);





	if (ASIC_IS_DCE5(rdev)) {

	if (ASIC_IS_DCE5(rdev)) {

		/* TODO */

		/* TODO */

drivers/gpu/drm/radeon/radeon.h

+14 −3
Original line number Original line Diff line number Diff line
@@ -560,6 +560,7 @@ struct radeon_unpin_work { 




struct r500_irq_stat_regs {

struct r500_irq_stat_regs {

	u32 disp_int;

	u32 disp_int;

	u32 hdmi0_status;

};

};





struct r600_irq_stat_regs {

struct r600_irq_stat_regs {
@@ -568,6 +569,8 @@ struct r600_irq_stat_regs { 
	u32 disp_int_cont2;

	u32 disp_int_cont2;

	u32 d1grph_int;

	u32 d1grph_int;

	u32 d2grph_int;

	u32 d2grph_int;

	u32 hdmi0_status;

	u32 hdmi1_status;

};

};





struct evergreen_irq_stat_regs {

struct evergreen_irq_stat_regs {
@@ -583,6 +586,12 @@ struct evergreen_irq_stat_regs { 
	u32 d4grph_int;

	u32 d4grph_int;

	u32 d5grph_int;

	u32 d5grph_int;

	u32 d6grph_int;

	u32 d6grph_int;

	u32 afmt_status1;

	u32 afmt_status2;

	u32 afmt_status3;

	u32 afmt_status4;

	u32 afmt_status5;

	u32 afmt_status6;

};

};





union radeon_irq_stat_regs {

union radeon_irq_stat_regs {
@@ -593,7 +602,7 @@ union radeon_irq_stat_regs { 




#define RADEON_MAX_HPD_PINS 6

#define RADEON_MAX_HPD_PINS 6

#define RADEON_MAX_CRTCS 6

#define RADEON_MAX_CRTCS 6

#define RADEON_MAX_HDMI_BLOCKS 2

#define RADEON_MAX_AFMT_BLOCKS 6





struct radeon_irq {

struct radeon_irq {

	bool		installed;

	bool		installed;
@@ -605,7 +614,7 @@ struct radeon_irq { 
	bool            gui_idle;

	bool            gui_idle;

	bool            gui_idle_acked;

	bool            gui_idle_acked;

	wait_queue_head_t	idle_queue;

	wait_queue_head_t	idle_queue;

	bool		hdmi[RADEON_MAX_HDMI_BLOCKS];

	bool		afmt[RADEON_MAX_AFMT_BLOCKS];

	spinlock_t sw_lock;

	spinlock_t sw_lock;

	int sw_refcount[RADEON_NUM_RINGS];

	int sw_refcount[RADEON_NUM_RINGS];

	union radeon_irq_stat_regs stat_regs;

	union radeon_irq_stat_regs stat_regs;
@@ -1546,13 +1555,13 @@ struct radeon_device { 
	struct r600_ih ih; /* r6/700 interrupt ring */

	struct r600_ih ih; /* r6/700 interrupt ring */

	struct si_rlc rlc;

	struct si_rlc rlc;

	struct work_struct hotplug_work;

	struct work_struct hotplug_work;

	struct work_struct audio_work;

	int num_crtc; /* number of crtcs */

	int num_crtc; /* number of crtcs */

	struct mutex dc_hw_i2c_mutex; /* display controller hw i2c mutex */

	struct mutex dc_hw_i2c_mutex; /* display controller hw i2c mutex */

	struct mutex vram_mutex;

	struct mutex vram_mutex;





	/* audio stuff */

	/* audio stuff */

	bool			audio_enabled;

	bool			audio_enabled;

	struct timer_list	audio_timer;

	int			audio_channels;

	int			audio_channels;

	int			audio_rate;

	int			audio_rate;

	int			audio_bits_per_sample;

	int			audio_bits_per_sample;
@@ -1828,6 +1837,8 @@ int radeon_vm_bo_rmv(struct radeon_device *rdev, 
		     struct radeon_vm *vm,

		     struct radeon_vm *vm,

		     struct radeon_bo *bo);

		     struct radeon_bo *bo);





/* audio */

void r600_audio_update_hdmi(struct work_struct *work);





/*

/*

 * R600 vram scratch functions

 * R600 vram scratch functions