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/*

 * 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

 */

/* RS600 / Radeon X1250/X1270 integrated GPU

 *

 * This file gather function specific to RS600 which is the IGP of

 * the X1250/X1270 family supporting intel CPU (while RS690/RS740

 * is the X1250/X1270 supporting AMD CPU). The display engine are

 * the avivo one, bios is an atombios, 3D block are the one of the

 * R4XX family. The GART is different from the RS400 one and is very

 * close to the one of the R600 family (R600 likely being an evolution

 * of the RS600 GART block).

 */

#include 

#include "radeon.h"

#include "radeon_asic.h"

#include "atom.h"

#include "rs600d.h"

#include "rs600_reg_safe.h"

static void rs600_gpu_init(struct radeon_device *rdev);

int rs600_mc_wait_for_idle(struct radeon_device *rdev);

static const u32 crtc_offsets[2] =

{

	0,

	AVIVO_D2CRTC_H_TOTAL - AVIVO_D1CRTC_H_TOTAL

};

static bool avivo_is_in_vblank(struct radeon_device *rdev, int crtc)

{

	if (RREG32(AVIVO_D1CRTC_STATUS + crtc_offsets[crtc]) & AVIVO_D1CRTC_V_BLANK)

		return true;

	else

		return false;

}

static bool avivo_is_counter_moving(struct radeon_device *rdev, int crtc)

{

	u32 pos1, pos2;

	pos1 = RREG32(AVIVO_D1CRTC_STATUS_POSITION + crtc_offsets[crtc]);

	pos2 = RREG32(AVIVO_D1CRTC_STATUS_POSITION + crtc_offsets[crtc]);

	if (pos1 != pos2)

		return true;

	else

		return false;

}

/**

 * avivo_wait_for_vblank - vblank wait asic callback.

 *

 * @rdev: radeon_device pointer

 * @crtc: crtc to wait for vblank on

 *

 * Wait for vblank on the requested crtc (r5xx-r7xx).

 */

void avivo_wait_for_vblank(struct radeon_device *rdev, int crtc)

{

	unsigned i = 0;

	if (crtc >= rdev->num_crtc)

		return;

	if (!(RREG32(AVIVO_D1CRTC_CONTROL + crtc_offsets[crtc]) & AVIVO_CRTC_EN))

		return;

	/* depending on when we hit vblank, we may be close to active; if so,

	 * wait for another frame.

	 */

	while (avivo_is_in_vblank(rdev, crtc)) {

		if (i++ % 100 == 0) {

			if (!avivo_is_counter_moving(rdev, crtc))

				break;

		}

	}

	while (!avivo_is_in_vblank(rdev, crtc)) {

		if (i++ % 100 == 0) {

			if (!avivo_is_counter_moving(rdev, crtc))

				break;

		}

		for (i = 0; i < rdev->usec_timeout; i++) {

			if (RREG32(AVIVO_D1CRTC_STATUS + crtc_offsets[crtc]) & AVIVO_D1CRTC_V_BLANK)

				break;

			udelay(1);

		}

	}

}

/* hpd for digital panel detect/disconnect */

bool rs600_hpd_sense(struct radeon_device *rdev, enum radeon_hpd_id hpd)

{

	u32 tmp;

	bool connected = false;

	switch (hpd) {

	case RADEON_HPD_1:

		tmp = RREG32(R_007D04_DC_HOT_PLUG_DETECT1_INT_STATUS);

		if (G_007D04_DC_HOT_PLUG_DETECT1_SENSE(tmp))

			connected = true;

		break;

	case RADEON_HPD_2:

		tmp = RREG32(R_007D14_DC_HOT_PLUG_DETECT2_INT_STATUS);

		if (G_007D14_DC_HOT_PLUG_DETECT2_SENSE(tmp))

			connected = true;

		break;

	default:

		break;

	}

	return connected;

}

void rs600_hpd_set_polarity(struct radeon_device *rdev,

			    enum radeon_hpd_id hpd)

{

	u32 tmp;

	bool connected = rs600_hpd_sense(rdev, hpd);

	switch (hpd) {

	case RADEON_HPD_1:

		tmp = RREG32(R_007D08_DC_HOT_PLUG_DETECT1_INT_CONTROL);

		if (connected)

			tmp &= ~S_007D08_DC_HOT_PLUG_DETECT1_INT_POLARITY(1);

		else

			tmp |= S_007D08_DC_HOT_PLUG_DETECT1_INT_POLARITY(1);

		WREG32(R_007D08_DC_HOT_PLUG_DETECT1_INT_CONTROL, tmp);

		break;

	case RADEON_HPD_2:

		tmp = RREG32(R_007D18_DC_HOT_PLUG_DETECT2_INT_CONTROL);

		if (connected)

			tmp &= ~S_007D18_DC_HOT_PLUG_DETECT2_INT_POLARITY(1);

		else

			tmp |= S_007D18_DC_HOT_PLUG_DETECT2_INT_POLARITY(1);

		WREG32(R_007D18_DC_HOT_PLUG_DETECT2_INT_CONTROL, tmp);

		break;

	default:

		break;

	}

}

void rs600_hpd_init(struct radeon_device *rdev)

{

	struct drm_device *dev = rdev->ddev;

	struct drm_connector *connector;

	unsigned enable = 0;

	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {

		struct radeon_connector *radeon_connector = to_radeon_connector(connector);

		switch (radeon_connector->hpd.hpd) {

		case RADEON_HPD_1:

			WREG32(R_007D00_DC_HOT_PLUG_DETECT1_CONTROL,

			       S_007D00_DC_HOT_PLUG_DETECT1_EN(1));

			break;

		case RADEON_HPD_2:

			WREG32(R_007D10_DC_HOT_PLUG_DETECT2_CONTROL,

			       S_007D10_DC_HOT_PLUG_DETECT2_EN(1));

			break;

		default:

			break;

		}

		enable |= 1 << radeon_connector->hpd.hpd;

		radeon_hpd_set_polarity(rdev, radeon_connector->hpd.hpd);

	}

//	radeon_irq_kms_enable_hpd(rdev, enable);

}

void rs600_hpd_fini(struct radeon_device *rdev)

{

	struct drm_device *dev = rdev->ddev;

	struct drm_connector *connector;

	unsigned disable = 0;

	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {

		struct radeon_connector *radeon_connector = to_radeon_connector(connector);

		switch (radeon_connector->hpd.hpd) {

		case RADEON_HPD_1:

			WREG32(R_007D00_DC_HOT_PLUG_DETECT1_CONTROL,

			       S_007D00_DC_HOT_PLUG_DETECT1_EN(0));

			break;

		case RADEON_HPD_2:

			WREG32(R_007D10_DC_HOT_PLUG_DETECT2_CONTROL,

			       S_007D10_DC_HOT_PLUG_DETECT2_EN(0));

			break;

		default:

			break;

		}

		disable |= 1 << radeon_connector->hpd.hpd;

	}

//	radeon_irq_kms_disable_hpd(rdev, disable);

}

int rs600_asic_reset(struct radeon_device *rdev)

{

	struct rv515_mc_save save;

	u32 status, tmp;

	int ret = 0;

	status = RREG32(R_000E40_RBBM_STATUS);

	if (!G_000E40_GUI_ACTIVE(status)) {

		return 0;

	}

	/* Stops all mc clients */

	rv515_mc_stop(rdev, &save);

	status = RREG32(R_000E40_RBBM_STATUS);

	dev_info(rdev->dev, "(%s:%d) RBBM_STATUS=0x%08X\n", __func__, __LINE__, status);

	/* stop CP */

	WREG32(RADEON_CP_CSQ_CNTL, 0);

	tmp = RREG32(RADEON_CP_RB_CNTL);

	WREG32(RADEON_CP_RB_CNTL, tmp | RADEON_RB_RPTR_WR_ENA);

	WREG32(RADEON_CP_RB_RPTR_WR, 0);

	WREG32(RADEON_CP_RB_WPTR, 0);

	WREG32(RADEON_CP_RB_CNTL, tmp);

//   pci_save_state(rdev->pdev);

	/* disable bus mastering */

//	pci_clear_master(rdev->pdev);

	mdelay(1);

	/* reset GA+VAP */

	WREG32(R_0000F0_RBBM_SOFT_RESET, S_0000F0_SOFT_RESET_VAP(1) |

					S_0000F0_SOFT_RESET_GA(1));

	RREG32(R_0000F0_RBBM_SOFT_RESET);

	mdelay(500);

	WREG32(R_0000F0_RBBM_SOFT_RESET, 0);

	mdelay(1);

	status = RREG32(R_000E40_RBBM_STATUS);

	dev_info(rdev->dev, "(%s:%d) RBBM_STATUS=0x%08X\n", __func__, __LINE__, status);

	/* reset CP */

	WREG32(R_0000F0_RBBM_SOFT_RESET, S_0000F0_SOFT_RESET_CP(1));

	RREG32(R_0000F0_RBBM_SOFT_RESET);

	mdelay(500);

	WREG32(R_0000F0_RBBM_SOFT_RESET, 0);

	mdelay(1);

	status = RREG32(R_000E40_RBBM_STATUS);

	dev_info(rdev->dev, "(%s:%d) RBBM_STATUS=0x%08X\n", __func__, __LINE__, status);

	/* reset MC */

	WREG32(R_0000F0_RBBM_SOFT_RESET, S_0000F0_SOFT_RESET_MC(1));

	RREG32(R_0000F0_RBBM_SOFT_RESET);

	mdelay(500);

	WREG32(R_0000F0_RBBM_SOFT_RESET, 0);

	mdelay(1);

	status = RREG32(R_000E40_RBBM_STATUS);

	dev_info(rdev->dev, "(%s:%d) RBBM_STATUS=0x%08X\n", __func__, __LINE__, status);

	/* restore PCI & busmastering */

//   pci_restore_state(rdev->pdev);

	/* Check if GPU is idle */

	if (G_000E40_GA_BUSY(status) || G_000E40_VAP_BUSY(status)) {

		dev_err(rdev->dev, "failed to reset GPU\n");

		ret = -1;

	} else

		dev_info(rdev->dev, "GPU reset succeed\n");

	rv515_mc_resume(rdev, &save);

	return ret;

}

/*

 * GART.

 */

void rs600_gart_tlb_flush(struct radeon_device *rdev)

{

	uint32_t tmp;

	tmp = RREG32_MC(R_000100_MC_PT0_CNTL);

	tmp &= C_000100_INVALIDATE_ALL_L1_TLBS & C_000100_INVALIDATE_L2_CACHE;

	WREG32_MC(R_000100_MC_PT0_CNTL, tmp);

	tmp = RREG32_MC(R_000100_MC_PT0_CNTL);

	tmp |= S_000100_INVALIDATE_ALL_L1_TLBS(1) | S_000100_INVALIDATE_L2_CACHE(1);

	WREG32_MC(R_000100_MC_PT0_CNTL, tmp);

	tmp = RREG32_MC(R_000100_MC_PT0_CNTL);

	tmp &= C_000100_INVALIDATE_ALL_L1_TLBS & C_000100_INVALIDATE_L2_CACHE;

	WREG32_MC(R_000100_MC_PT0_CNTL, tmp);

	tmp = RREG32_MC(R_000100_MC_PT0_CNTL);

}

static int rs600_gart_init(struct radeon_device *rdev)

{

	int r;

	if (rdev->gart.robj) {

		WARN(1, "RS600 GART already initialized\n");

		return 0;

	}

	/* Initialize common gart structure */

	r = radeon_gart_init(rdev);

	if (r) {

		return r;

	}

	rdev->gart.table_size = rdev->gart.num_gpu_pages * 8;

	return radeon_gart_table_vram_alloc(rdev);

}

static int rs600_gart_enable(struct radeon_device *rdev)

{

	u32 tmp;

	int r, i;

	if (rdev->gart.robj == NULL) {

		dev_err(rdev->dev, "No VRAM object for PCIE GART.\n");

		return -EINVAL;

	}

	r = radeon_gart_table_vram_pin(rdev);

	if (r)

		return r;

	radeon_gart_restore(rdev);

	/* Enable bus master */

	tmp = RREG32(RADEON_BUS_CNTL) & ~RS600_BUS_MASTER_DIS;

	WREG32(RADEON_BUS_CNTL, tmp);

	/* FIXME: setup default page */

	WREG32_MC(R_000100_MC_PT0_CNTL,

		 (S_000100_EFFECTIVE_L2_CACHE_SIZE(6) |

		  S_000100_EFFECTIVE_L2_QUEUE_SIZE(6)));

	for (i = 0; i < 19; i++) {

		WREG32_MC(R_00016C_MC_PT0_CLIENT0_CNTL + i,

			S_00016C_ENABLE_TRANSLATION_MODE_OVERRIDE(1) |

			S_00016C_SYSTEM_ACCESS_MODE_MASK(

				  V_00016C_SYSTEM_ACCESS_MODE_NOT_IN_SYS) |

			S_00016C_SYSTEM_APERTURE_UNMAPPED_ACCESS(

				  V_00016C_SYSTEM_APERTURE_UNMAPPED_PASSTHROUGH) |

			  S_00016C_EFFECTIVE_L1_CACHE_SIZE(3) |

			S_00016C_ENABLE_FRAGMENT_PROCESSING(1) |

			  S_00016C_EFFECTIVE_L1_QUEUE_SIZE(3));

	}

	/* enable first context */

	WREG32_MC(R_000102_MC_PT0_CONTEXT0_CNTL,

			S_000102_ENABLE_PAGE_TABLE(1) |

			S_000102_PAGE_TABLE_DEPTH(V_000102_PAGE_TABLE_FLAT));

	/* disable all other contexts */

	for (i = 1; i < 8; i++)

		WREG32_MC(R_000102_MC_PT0_CONTEXT0_CNTL + i, 0);

	/* setup the page table */

	WREG32_MC(R_00012C_MC_PT0_CONTEXT0_FLAT_BASE_ADDR,

		 rdev->gart.table_addr);

	WREG32_MC(R_00013C_MC_PT0_CONTEXT0_FLAT_START_ADDR, rdev->mc.gtt_start);

	WREG32_MC(R_00014C_MC_PT0_CONTEXT0_FLAT_END_ADDR, rdev->mc.gtt_end);

	WREG32_MC(R_00011C_MC_PT0_CONTEXT0_DEFAULT_READ_ADDR, 0);

	/* System context maps to VRAM space */

	WREG32_MC(R_000112_MC_PT0_SYSTEM_APERTURE_LOW_ADDR, rdev->mc.vram_start);

	WREG32_MC(R_000114_MC_PT0_SYSTEM_APERTURE_HIGH_ADDR, rdev->mc.vram_end);

	/* enable page tables */

	tmp = RREG32_MC(R_000100_MC_PT0_CNTL);

	WREG32_MC(R_000100_MC_PT0_CNTL, (tmp | S_000100_ENABLE_PT(1)));

	tmp = RREG32_MC(R_000009_MC_CNTL1);

	WREG32_MC(R_000009_MC_CNTL1, (tmp | S_000009_ENABLE_PAGE_TABLES(1)));

	rs600_gart_tlb_flush(rdev);

	DRM_INFO("PCIE GART of %uM enabled (table at 0x%016llX).\n",

		 (unsigned)(rdev->mc.gtt_size >> 20),

		 (unsigned long long)rdev->gart.table_addr);

	rdev->gart.ready = true;

	return 0;

}

static void rs600_gart_disable(struct radeon_device *rdev)

{

	u32 tmp;

	/* FIXME: disable out of gart access */

	WREG32_MC(R_000100_MC_PT0_CNTL, 0);

	tmp = RREG32_MC(R_000009_MC_CNTL1);

	WREG32_MC(R_000009_MC_CNTL1, tmp & C_000009_ENABLE_PAGE_TABLES);

	radeon_gart_table_vram_unpin(rdev);

}

static void rs600_gart_fini(struct radeon_device *rdev)

{

	radeon_gart_fini(rdev);

	rs600_gart_disable(rdev);

	radeon_gart_table_vram_free(rdev);

}

#define R600_PTE_VALID     (1 << 0)

#define R600_PTE_SYSTEM    (1 << 1)

#define R600_PTE_SNOOPED   (1 << 2)

#define R600_PTE_READABLE  (1 << 5)

#define R600_PTE_WRITEABLE (1 << 6)

int rs600_gart_set_page(struct radeon_device *rdev, int i, uint64_t addr)

{

	void __iomem *ptr = (void *)rdev->gart.ptr;

	if (i < 0 || i > rdev->gart.num_gpu_pages) {

		return -EINVAL;

	}

	addr = addr & 0xFFFFFFFFFFFFF000ULL;

	addr |= R600_PTE_VALID | R600_PTE_SYSTEM | R600_PTE_SNOOPED;

	addr |= R600_PTE_READABLE | R600_PTE_WRITEABLE;

	writeq(addr, ptr + (i * 8));

	return 0;

}

int rs600_irq_set(struct radeon_device *rdev)

{

	uint32_t tmp = 0;

	uint32_t mode_int = 0;

	u32 hpd1 = RREG32(R_007D08_DC_HOT_PLUG_DETECT1_INT_CONTROL) &

		~S_007D08_DC_HOT_PLUG_DETECT1_INT_EN(1);

	u32 hpd2 = RREG32(R_007D18_DC_HOT_PLUG_DETECT2_INT_CONTROL) &

		~S_007D18_DC_HOT_PLUG_DETECT2_INT_EN(1);

	u32 hdmi0;

	if (ASIC_IS_DCE2(rdev))

		hdmi0 = RREG32(R_007408_HDMI0_AUDIO_PACKET_CONTROL) &

			~S_007408_HDMI0_AZ_FORMAT_WTRIG_MASK(1);

	else

		hdmi0 = 0;

   if (!rdev->irq.installed) {

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

		WREG32(R_000040_GEN_INT_CNTL, 0);

		return -EINVAL;

	}

	if (atomic_read(&rdev->irq.ring_int[RADEON_RING_TYPE_GFX_INDEX])) {

		tmp |= S_000040_SW_INT_EN(1);

	}

	if (rdev->irq.crtc_vblank_int[0] ||

	    atomic_read(&rdev->irq.pflip[0])) {

		mode_int |= S_006540_D1MODE_VBLANK_INT_MASK(1);

	}

	if (rdev->irq.crtc_vblank_int[1] ||

	    atomic_read(&rdev->irq.pflip[1])) {

		mode_int |= S_006540_D2MODE_VBLANK_INT_MASK(1);

	}

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

		hpd1 |= S_007D08_DC_HOT_PLUG_DETECT1_INT_EN(1);

	}

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

		hpd2 |= S_007D18_DC_HOT_PLUG_DETECT2_INT_EN(1);

	}

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

		hdmi0 |= S_007408_HDMI0_AZ_FORMAT_WTRIG_MASK(1);

	}

	WREG32(R_000040_GEN_INT_CNTL, tmp);

	WREG32(R_006540_DxMODE_INT_MASK, mode_int);

	WREG32(R_007D08_DC_HOT_PLUG_DETECT1_INT_CONTROL, hpd1);

	WREG32(R_007D18_DC_HOT_PLUG_DETECT2_INT_CONTROL, hpd2);

	if (ASIC_IS_DCE2(rdev))

		WREG32(R_007408_HDMI0_AUDIO_PACKET_CONTROL, hdmi0);

	return 0;

}

static inline u32 rs600_irq_ack(struct radeon_device *rdev)

{

	uint32_t irqs = RREG32(R_000044_GEN_INT_STATUS);

	uint32_t irq_mask = S_000044_SW_INT(1);

	u32 tmp;

	if (G_000044_DISPLAY_INT_STAT(irqs)) {

		rdev->irq.stat_regs.r500.disp_int = RREG32(R_007EDC_DISP_INTERRUPT_STATUS);

		if (G_007EDC_LB_D1_VBLANK_INTERRUPT(rdev->irq.stat_regs.r500.disp_int)) {

			WREG32(R_006534_D1MODE_VBLANK_STATUS,

				S_006534_D1MODE_VBLANK_ACK(1));

		}

		if (G_007EDC_LB_D2_VBLANK_INTERRUPT(rdev->irq.stat_regs.r500.disp_int)) {

			WREG32(R_006D34_D2MODE_VBLANK_STATUS,

				S_006D34_D2MODE_VBLANK_ACK(1));

		}

		if (G_007EDC_DC_HOT_PLUG_DETECT1_INTERRUPT(rdev->irq.stat_regs.r500.disp_int)) {

			tmp = RREG32(R_007D08_DC_HOT_PLUG_DETECT1_INT_CONTROL);

			tmp |= S_007D08_DC_HOT_PLUG_DETECT1_INT_ACK(1);

			WREG32(R_007D08_DC_HOT_PLUG_DETECT1_INT_CONTROL, tmp);

		}

		if (G_007EDC_DC_HOT_PLUG_DETECT2_INTERRUPT(rdev->irq.stat_regs.r500.disp_int)) {

			tmp = RREG32(R_007D18_DC_HOT_PLUG_DETECT2_INT_CONTROL);

			tmp |= S_007D18_DC_HOT_PLUG_DETECT2_INT_ACK(1);

			WREG32(R_007D18_DC_HOT_PLUG_DETECT2_INT_CONTROL, tmp);

		}

	} else {

		rdev->irq.stat_regs.r500.disp_int = 0;

	}

	if (ASIC_IS_DCE2(rdev)) {

		rdev->irq.stat_regs.r500.hdmi0_status = RREG32(R_007404_HDMI0_STATUS) &

			S_007404_HDMI0_AZ_FORMAT_WTRIG(1);

		if (G_007404_HDMI0_AZ_FORMAT_WTRIG(rdev->irq.stat_regs.r500.hdmi0_status)) {

			tmp = RREG32(R_007408_HDMI0_AUDIO_PACKET_CONTROL);

			tmp |= S_007408_HDMI0_AZ_FORMAT_WTRIG_ACK(1);

			WREG32(R_007408_HDMI0_AUDIO_PACKET_CONTROL, tmp);

		}

	} else

		rdev->irq.stat_regs.r500.hdmi0_status = 0;

	if (irqs) {

		WREG32(R_000044_GEN_INT_STATUS, irqs);

	}

	return irqs & irq_mask;

}

void rs600_irq_disable(struct radeon_device *rdev)

{

	u32 hdmi0 = RREG32(R_007408_HDMI0_AUDIO_PACKET_CONTROL) &

		~S_007408_HDMI0_AZ_FORMAT_WTRIG_MASK(1);

	WREG32(R_007408_HDMI0_AUDIO_PACKET_CONTROL, hdmi0);

	WREG32(R_000040_GEN_INT_CNTL, 0);

	WREG32(R_006540_DxMODE_INT_MASK, 0);

	/* Wait and acknowledge irq */

	mdelay(1);

	rs600_irq_ack(rdev);

}

int rs600_irq_process(struct radeon_device *rdev)

{

	u32 status, msi_rearm;

	bool queue_hotplug = false;

	bool queue_hdmi = false;

	status = rs600_irq_ack(rdev);

	if (!status &&

	    !rdev->irq.stat_regs.r500.disp_int &&

	    !rdev->irq.stat_regs.r500.hdmi0_status) {

		return IRQ_NONE;

	}

	while (status ||

	       rdev->irq.stat_regs.r500.disp_int ||

	       rdev->irq.stat_regs.r500.hdmi0_status) {

		/* SW interrupt */

		if (G_000044_SW_INT(status)) {

			radeon_fence_process(rdev, RADEON_RING_TYPE_GFX_INDEX);

		}

		/* Vertical blank interrupts */

		if (G_007EDC_LB_D1_VBLANK_INTERRUPT(rdev->irq.stat_regs.r500.disp_int)) {

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

//				drm_handle_vblank(rdev->ddev, 0);

				rdev->pm.vblank_sync = true;

//				wake_up(&rdev->irq.vblank_queue);

			}

//			if (rdev->irq.pflip[0])

//				radeon_crtc_handle_flip(rdev, 0);

		}

		if (G_007EDC_LB_D2_VBLANK_INTERRUPT(rdev->irq.stat_regs.r500.disp_int)) {

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

//				drm_handle_vblank(rdev->ddev, 1);

				rdev->pm.vblank_sync = true;

//				wake_up(&rdev->irq.vblank_queue);

			}

//			if (rdev->irq.pflip[1])

//				radeon_crtc_handle_flip(rdev, 1);

		}

		if (G_007EDC_DC_HOT_PLUG_DETECT1_INTERRUPT(rdev->irq.stat_regs.r500.disp_int)) {

			queue_hotplug = true;

			DRM_DEBUG("HPD1\n");

		}

		if (G_007EDC_DC_HOT_PLUG_DETECT2_INTERRUPT(rdev->irq.stat_regs.r500.disp_int)) {

			queue_hotplug = true;

			DRM_DEBUG("HPD2\n");

		}

		if (G_007404_HDMI0_AZ_FORMAT_WTRIG(rdev->irq.stat_regs.r500.hdmi0_status)) {

			queue_hdmi = true;

			DRM_DEBUG("HDMI0\n");

		}

		status = rs600_irq_ack(rdev);

	}

//	if (queue_hotplug)

//		schedule_work(&rdev->hotplug_work);

//	if (queue_hdmi)

//		schedule_work(&rdev->audio_work);

	if (rdev->msi_enabled) {

		switch (rdev->family) {

		case CHIP_RS600:

		case CHIP_RS690:

		case CHIP_RS740:

			msi_rearm = RREG32(RADEON_BUS_CNTL) & ~RS600_MSI_REARM;

			WREG32(RADEON_BUS_CNTL, msi_rearm);

			WREG32(RADEON_BUS_CNTL, msi_rearm | RS600_MSI_REARM);

			break;

		default:

			WREG32(RADEON_MSI_REARM_EN, RV370_MSI_REARM_EN);

			break;

		}

	}

	return IRQ_HANDLED;

}

u32 rs600_get_vblank_counter(struct radeon_device *rdev, int crtc)

{

	if (crtc == 0)

		return RREG32(R_0060A4_D1CRTC_STATUS_FRAME_COUNT);

	else

		return RREG32(R_0068A4_D2CRTC_STATUS_FRAME_COUNT);

}

int rs600_mc_wait_for_idle(struct radeon_device *rdev)

{

	unsigned i;

	for (i = 0; i < rdev->usec_timeout; i++) {

		if (G_000000_MC_IDLE(RREG32_MC(R_000000_MC_STATUS)))

			return 0;

		udelay(1);

	}

	return -1;

}

static void rs600_gpu_init(struct radeon_device *rdev)

{

	r420_pipes_init(rdev);

	/* Wait for mc idle */

	if (rs600_mc_wait_for_idle(rdev))

		dev_warn(rdev->dev, "Wait MC idle timeout before updating MC.\n");

}

static void rs600_mc_init(struct radeon_device *rdev)

{

	u64 base;

	rdev->mc.aper_base = pci_resource_start(rdev->pdev, 0);

	rdev->mc.aper_size = pci_resource_len(rdev->pdev, 0);

	rdev->mc.vram_is_ddr = true;

	rdev->mc.vram_width = 128;

	rdev->mc.real_vram_size = RREG32(RADEON_CONFIG_MEMSIZE);

	rdev->mc.mc_vram_size = rdev->mc.real_vram_size;

	rdev->mc.visible_vram_size = rdev->mc.aper_size;

	rdev->mc.igp_sideport_enabled = radeon_atombios_sideport_present(rdev);

	base = RREG32_MC(R_000004_MC_FB_LOCATION);

	base = G_000004_MC_FB_START(base) << 16;

	radeon_vram_location(rdev, &rdev->mc, base);

	rdev->mc.gtt_base_align = 0;

	radeon_gtt_location(rdev, &rdev->mc);

	radeon_update_bandwidth_info(rdev);

}

void rs600_bandwidth_update(struct radeon_device *rdev)

{

	struct drm_display_mode *mode0 = NULL;

	struct drm_display_mode *mode1 = NULL;

	u32 d1mode_priority_a_cnt, d2mode_priority_a_cnt;

	/* FIXME: implement full support */

	radeon_update_display_priority(rdev);

	if (rdev->mode_info.crtcs[0]->base.enabled)

		mode0 = &rdev->mode_info.crtcs[0]->base.mode;

	if (rdev->mode_info.crtcs[1]->base.enabled)

		mode1 = &rdev->mode_info.crtcs[1]->base.mode;

	rs690_line_buffer_adjust(rdev, mode0, mode1);

	if (rdev->disp_priority == 2) {

		d1mode_priority_a_cnt = RREG32(R_006548_D1MODE_PRIORITY_A_CNT);

		d2mode_priority_a_cnt = RREG32(R_006D48_D2MODE_PRIORITY_A_CNT);

		d1mode_priority_a_cnt |= S_006548_D1MODE_PRIORITY_A_ALWAYS_ON(1);

		d2mode_priority_a_cnt |= S_006D48_D2MODE_PRIORITY_A_ALWAYS_ON(1);

		WREG32(R_006548_D1MODE_PRIORITY_A_CNT, d1mode_priority_a_cnt);

		WREG32(R_00654C_D1MODE_PRIORITY_B_CNT, d1mode_priority_a_cnt);

		WREG32(R_006D48_D2MODE_PRIORITY_A_CNT, d2mode_priority_a_cnt);

		WREG32(R_006D4C_D2MODE_PRIORITY_B_CNT, d2mode_priority_a_cnt);

	}

}

uint32_t rs600_mc_rreg(struct radeon_device *rdev, uint32_t reg)

{

	WREG32(R_000070_MC_IND_INDEX, S_000070_MC_IND_ADDR(reg) |

		S_000070_MC_IND_CITF_ARB0(1));

	return RREG32(R_000074_MC_IND_DATA);

}

void rs600_mc_wreg(struct radeon_device *rdev, uint32_t reg, uint32_t v)

{

	WREG32(R_000070_MC_IND_INDEX, S_000070_MC_IND_ADDR(reg) |

		S_000070_MC_IND_CITF_ARB0(1) | S_000070_MC_IND_WR_EN(1));

	WREG32(R_000074_MC_IND_DATA, v);

}

static void rs600_debugfs(struct radeon_device *rdev)

{

	if (r100_debugfs_rbbm_init(rdev))

		DRM_ERROR("Failed to register debugfs file for RBBM !\n");

}

void rs600_set_safe_registers(struct radeon_device *rdev)

{

	rdev->config.r300.reg_safe_bm = rs600_reg_safe_bm;

	rdev->config.r300.reg_safe_bm_size = ARRAY_SIZE(rs600_reg_safe_bm);

}

static void rs600_mc_program(struct radeon_device *rdev)

{

	struct rv515_mc_save save;

	/* Stops all mc clients */

	rv515_mc_stop(rdev, &save);

	/* Wait for mc idle */

	if (rs600_mc_wait_for_idle(rdev))

		dev_warn(rdev->dev, "Wait MC idle timeout before updating MC.\n");

	/* FIXME: What does AGP means for such chipset ? */

	WREG32_MC(R_000005_MC_AGP_LOCATION, 0x0FFFFFFF);

	WREG32_MC(R_000006_AGP_BASE, 0);

	WREG32_MC(R_000007_AGP_BASE_2, 0);

	/* Program MC */

	WREG32_MC(R_000004_MC_FB_LOCATION,

			S_000004_MC_FB_START(rdev->mc.vram_start >> 16) |

			S_000004_MC_FB_TOP(rdev->mc.vram_end >> 16));

	WREG32(R_000134_HDP_FB_LOCATION,

		S_000134_HDP_FB_START(rdev->mc.vram_start >> 16));

	rv515_mc_resume(rdev, &save);

}

static int rs600_startup(struct radeon_device *rdev)

{

	int r;

	rs600_mc_program(rdev);

	/* Resume clock */

	rv515_clock_startup(rdev);

	/* Initialize GPU configuration (# pipes, ...) */

	rs600_gpu_init(rdev);

	/* Initialize GART (initialize after TTM so we can allocate

	 * memory through TTM but finalize after TTM) */

	r = rs600_gart_enable(rdev);

	if (r)

	return r;

	/* allocate wb buffer */

	r = radeon_wb_init(rdev);

	if (r)

		return r;

	r = radeon_fence_driver_start_ring(rdev, RADEON_RING_TYPE_GFX_INDEX);

	if (r) {

		dev_err(rdev->dev, "failed initializing CP fences (%d).\n", r);

		return r;

	}

	/* Enable IRQ */

	if (!rdev->irq.installed) {

		r = radeon_irq_kms_init(rdev);

		if (r)

			return r;

	}

	rs600_irq_set(rdev);

	rdev->config.r300.hdp_cntl = RREG32(RADEON_HOST_PATH_CNTL);

	/* 1M ring buffer */

	r = r100_cp_init(rdev, 1024 * 1024);

	if (r) {

		dev_err(rdev->dev, "failed initializing CP (%d).\n", r);

		return r;

	}

	r = radeon_ib_pool_init(rdev);

	if (r) {

		dev_err(rdev->dev, "IB initialization failed (%d).\n", r);

		return r;

	}

	return 0;

}

int rs600_init(struct radeon_device *rdev)

{

	int r;

	/* Disable VGA */

	rv515_vga_render_disable(rdev);

	/* Initialize scratch registers */

	radeon_scratch_init(rdev);

	/* Initialize surface registers */

	radeon_surface_init(rdev);

	/* restore some register to sane defaults */

	r100_restore_sanity(rdev);

	/* BIOS */

	if (!radeon_get_bios(rdev)) {

		if (ASIC_IS_AVIVO(rdev))

			return -EINVAL;

	}

	if (rdev->is_atom_bios) {

		r = radeon_atombios_init(rdev);

		if (r)

			return r;

	} else {

		dev_err(rdev->dev, "Expecting atombios for RS600 GPU\n");

		return -EINVAL;

	}

	/* Reset gpu before posting otherwise ATOM will enter infinite loop */

	if (radeon_asic_reset(rdev)) {

		dev_warn(rdev->dev,

			"GPU reset failed ! (0xE40=0x%08X, 0x7C0=0x%08X)\n",

			RREG32(R_000E40_RBBM_STATUS),

			RREG32(R_0007C0_CP_STAT));

	}

	/* check if cards are posted or not */

	if (radeon_boot_test_post_card(rdev) == false)

		return -EINVAL;

	/* Initialize clocks */

	radeon_get_clock_info(rdev->ddev);

	/* initialize memory controller */

	rs600_mc_init(rdev);

	rs600_debugfs(rdev);

	/* Fence driver */

	r = radeon_fence_driver_init(rdev);

	if (r)

		return r;

	/* Memory manager */

	r = radeon_bo_init(rdev);

	if (r)

		return r;

	r = rs600_gart_init(rdev);

	if (r)

		return r;

	rs600_set_safe_registers(rdev);

	rdev->accel_working = true;

	r = rs600_startup(rdev);

	if (r) {

		/* Somethings want wront with the accel init stop accel */

		dev_err(rdev->dev, "Disabling GPU acceleration\n");

//		r100_cp_fini(rdev);

//		r100_wb_fini(rdev);

//		r100_ib_fini(rdev);

		rs600_gart_fini(rdev);

//		radeon_irq_kms_fini(rdev);

		rdev->accel_working = false;

	}

	return 0;

}