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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

 */

#include 

#include 

#include 

#include "radeon.h"

#include "radeon_asic.h"

#include "rs400d.h"

/* This files gather functions specifics to : rs400,rs480 */

static int rs400_debugfs_pcie_gart_info_init(struct radeon_device *rdev);

void rs400_gart_adjust_size(struct radeon_device *rdev)

{

	/* Check gart size */

	switch (rdev->mc.gtt_size/(1024*1024)) {

	case 32:

	case 64:

	case 128:

	case 256:

	case 512:

	case 1024:

	case 2048:

		break;

	default:

		DRM_ERROR("Unable to use IGP GART size %uM\n",

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

		DRM_ERROR("Valid GART size for IGP are 32M,64M,128M,256M,512M,1G,2G\n");

		DRM_ERROR("Forcing to 32M GART size\n");

		rdev->mc.gtt_size = 32 * 1024 * 1024;

		return;

	}

}

void rs400_gart_tlb_flush(struct radeon_device *rdev)

{

	uint32_t tmp;

	unsigned int timeout = rdev->usec_timeout;

	WREG32_MC(RS480_GART_CACHE_CNTRL, RS480_GART_CACHE_INVALIDATE);

	do {

		tmp = RREG32_MC(RS480_GART_CACHE_CNTRL);

		if ((tmp & RS480_GART_CACHE_INVALIDATE) == 0)

			break;

		DRM_UDELAY(1);

		timeout--;

	} while (timeout > 0);

	WREG32_MC(RS480_GART_CACHE_CNTRL, 0);

}

int rs400_gart_init(struct radeon_device *rdev)

{

	int r;

	if (rdev->gart.ptr) {

		WARN(1, "RS400 GART already initialized\n");

		return 0;

	}

	/* Check gart size */

	switch(rdev->mc.gtt_size / (1024 * 1024)) {

	case 32:

	case 64:

	case 128:

	case 256:

	case 512:

	case 1024:

	case 2048:

		break;

	default:

		return -EINVAL;

	}

	/* Initialize common gart structure */

	r = radeon_gart_init(rdev);

	if (r)

		return r;

	if (rs400_debugfs_pcie_gart_info_init(rdev))

		DRM_ERROR("Failed to register debugfs file for RS400 GART !\n");

	rdev->gart.table_size = rdev->gart.num_gpu_pages * 4;

	return radeon_gart_table_ram_alloc(rdev);

}

int rs400_gart_enable(struct radeon_device *rdev)

{

	uint32_t size_reg;

	uint32_t tmp;

	tmp = RREG32_MC(RS690_AIC_CTRL_SCRATCH);

	tmp |= RS690_DIS_OUT_OF_PCI_GART_ACCESS;

	WREG32_MC(RS690_AIC_CTRL_SCRATCH, tmp);

	/* Check gart size */

	switch(rdev->mc.gtt_size / (1024 * 1024)) {

	case 32:

		size_reg = RS480_VA_SIZE_32MB;

		break;

	case 64:

		size_reg = RS480_VA_SIZE_64MB;

		break;

	case 128:

		size_reg = RS480_VA_SIZE_128MB;

		break;

	case 256:

		size_reg = RS480_VA_SIZE_256MB;

		break;

	case 512:

		size_reg = RS480_VA_SIZE_512MB;

		break;

	case 1024:

		size_reg = RS480_VA_SIZE_1GB;

		break;

	case 2048:

		size_reg = RS480_VA_SIZE_2GB;

		break;

	default:

		return -EINVAL;

	}

	/* It should be fine to program it to max value */

	if (rdev->family == CHIP_RS690 || (rdev->family == CHIP_RS740)) {

		WREG32_MC(RS690_MCCFG_AGP_BASE, 0xFFFFFFFF);

		WREG32_MC(RS690_MCCFG_AGP_BASE_2, 0);

	} else {

		WREG32(RADEON_AGP_BASE, 0xFFFFFFFF);

		WREG32(RS480_AGP_BASE_2, 0);

	}

	tmp = REG_SET(RS690_MC_AGP_TOP, rdev->mc.gtt_end >> 16);

	tmp |= REG_SET(RS690_MC_AGP_START, rdev->mc.gtt_start >> 16);

	if ((rdev->family == CHIP_RS690) || (rdev->family == CHIP_RS740)) {

		WREG32_MC(RS690_MCCFG_AGP_LOCATION, tmp);

		tmp = RREG32(RADEON_BUS_CNTL) & ~RS600_BUS_MASTER_DIS;

		WREG32(RADEON_BUS_CNTL, tmp);

	} else {

		WREG32(RADEON_MC_AGP_LOCATION, tmp);

		tmp = RREG32(RADEON_BUS_CNTL) & ~RADEON_BUS_MASTER_DIS;

		WREG32(RADEON_BUS_CNTL, tmp);

	}

	/* Table should be in 32bits address space so ignore bits above. */

	tmp = (u32)rdev->gart.table_addr & 0xfffff000;

	tmp |= (upper_32_bits(rdev->gart.table_addr) & 0xff) << 4;

	WREG32_MC(RS480_GART_BASE, tmp);

	/* TODO: more tweaking here */

	WREG32_MC(RS480_GART_FEATURE_ID,

		  (RS480_TLB_ENABLE |

		   RS480_GTW_LAC_EN | RS480_1LEVEL_GART));

	/* Disable snooping */

	WREG32_MC(RS480_AGP_MODE_CNTL,

		  (1 << RS480_REQ_TYPE_SNOOP_SHIFT) | RS480_REQ_TYPE_SNOOP_DIS);

	/* Disable AGP mode */

	/* FIXME: according to doc we should set HIDE_MMCFG_BAR=0,

	 * AGPMODE30=0 & AGP30ENHANCED=0 in NB_CNTL */

	if ((rdev->family == CHIP_RS690) || (rdev->family == CHIP_RS740)) {

		tmp = RREG32_MC(RS480_MC_MISC_CNTL);

		tmp |= RS480_GART_INDEX_REG_EN | RS690_BLOCK_GFX_D3_EN;

		WREG32_MC(RS480_MC_MISC_CNTL, tmp);

	} else {

		tmp = RREG32_MC(RS480_MC_MISC_CNTL);

		tmp |= RS480_GART_INDEX_REG_EN;

		WREG32_MC(RS480_MC_MISC_CNTL, tmp);

	}

	/* Enable gart */

	WREG32_MC(RS480_AGP_ADDRESS_SPACE_SIZE, (RS480_GART_EN | size_reg));

	rs400_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;

}

void rs400_gart_disable(struct radeon_device *rdev)

{

	uint32_t tmp;

	tmp = RREG32_MC(RS690_AIC_CTRL_SCRATCH);

	tmp |= RS690_DIS_OUT_OF_PCI_GART_ACCESS;

	WREG32_MC(RS690_AIC_CTRL_SCRATCH, tmp);

	WREG32_MC(RS480_AGP_ADDRESS_SPACE_SIZE, 0);

}

void rs400_gart_fini(struct radeon_device *rdev)

{

	radeon_gart_fini(rdev);

	rs400_gart_disable(rdev);

	radeon_gart_table_ram_free(rdev);

}

#define RS400_PTE_UNSNOOPED (1 << 0)

#define RS400_PTE_WRITEABLE (1 << 2)

#define RS400_PTE_READABLE  (1 << 3)

void rs400_gart_set_page(struct radeon_device *rdev, unsigned i,

			 uint64_t addr, uint32_t flags)

{

	uint32_t entry;

	u32 *gtt = rdev->gart.ptr;

	entry = (lower_32_bits(addr) & PAGE_MASK) |

		((upper_32_bits(addr) & 0xff) << 4);

	if (flags & RADEON_GART_PAGE_READ)

		addr |= RS400_PTE_READABLE;

	if (flags & RADEON_GART_PAGE_WRITE)

		addr |= RS400_PTE_WRITEABLE;

	if (!(flags & RADEON_GART_PAGE_SNOOP))

		entry |= RS400_PTE_UNSNOOPED;

	entry = cpu_to_le32(entry);

	gtt[i] = entry;

}

int rs400_mc_wait_for_idle(struct radeon_device *rdev)

{

	unsigned i;

	uint32_t tmp;

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

		/* read MC_STATUS */

		tmp = RREG32(RADEON_MC_STATUS);

		if (tmp & RADEON_MC_IDLE) {

			return 0;

		}

		DRM_UDELAY(1);

	}

	return -1;

}

static void rs400_gpu_init(struct radeon_device *rdev)

{

	/* FIXME: is this correct ? */

	r420_pipes_init(rdev);

	if (rs400_mc_wait_for_idle(rdev)) {

		printk(KERN_WARNING "rs400: Failed to wait MC idle while "

		       "programming pipes. Bad things might happen. %08x\n", RREG32(RADEON_MC_STATUS));

	}

}

static void rs400_mc_init(struct radeon_device *rdev)

{

	u64 base;

	rs400_gart_adjust_size(rdev);

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

	/* DDR for all card after R300 & IGP */

	rdev->mc.vram_is_ddr = true;

	rdev->mc.vram_width = 128;

	r100_vram_init_sizes(rdev);

	base = (RREG32(RADEON_NB_TOM) & 0xffff) << 16;

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

	rdev->mc.gtt_base_align = rdev->mc.gtt_size - 1;

	radeon_gtt_location(rdev, &rdev->mc);

	radeon_update_bandwidth_info(rdev);

}

uint32_t rs400_mc_rreg(struct radeon_device *rdev, uint32_t reg)

{

	unsigned long flags;

	uint32_t r;

	spin_lock_irqsave(&rdev->mc_idx_lock, flags);

	WREG32(RS480_NB_MC_INDEX, reg & 0xff);

	r = RREG32(RS480_NB_MC_DATA);

	WREG32(RS480_NB_MC_INDEX, 0xff);

	spin_unlock_irqrestore(&rdev->mc_idx_lock, flags);

	return r;

}

void rs400_mc_wreg(struct radeon_device *rdev, uint32_t reg, uint32_t v)

{

	unsigned long flags;

	spin_lock_irqsave(&rdev->mc_idx_lock, flags);

	WREG32(RS480_NB_MC_INDEX, ((reg) & 0xff) | RS480_NB_MC_IND_WR_EN);

	WREG32(RS480_NB_MC_DATA, (v));

	WREG32(RS480_NB_MC_INDEX, 0xff);

	spin_unlock_irqrestore(&rdev->mc_idx_lock, flags);

}

#if defined(CONFIG_DEBUG_FS)

static int rs400_debugfs_gart_info(struct seq_file *m, void *data)

{

	struct drm_info_node *node = (struct drm_info_node *) m->private;

	struct drm_device *dev = node->minor->dev;

	struct radeon_device *rdev = dev->dev_private;

	uint32_t tmp;

	tmp = RREG32(RADEON_HOST_PATH_CNTL);

	seq_printf(m, "HOST_PATH_CNTL 0x%08x\n", tmp);

	tmp = RREG32(RADEON_BUS_CNTL);

	seq_printf(m, "BUS_CNTL 0x%08x\n", tmp);

	tmp = RREG32_MC(RS690_AIC_CTRL_SCRATCH);

	seq_printf(m, "AIC_CTRL_SCRATCH 0x%08x\n", tmp);

	if (rdev->family == CHIP_RS690 || (rdev->family == CHIP_RS740)) {

		tmp = RREG32_MC(RS690_MCCFG_AGP_BASE);

		seq_printf(m, "MCCFG_AGP_BASE 0x%08x\n", tmp);

		tmp = RREG32_MC(RS690_MCCFG_AGP_BASE_2);

		seq_printf(m, "MCCFG_AGP_BASE_2 0x%08x\n", tmp);

		tmp = RREG32_MC(RS690_MCCFG_AGP_LOCATION);

		seq_printf(m, "MCCFG_AGP_LOCATION 0x%08x\n", tmp);

		tmp = RREG32_MC(RS690_MCCFG_FB_LOCATION);

		seq_printf(m, "MCCFG_FB_LOCATION 0x%08x\n", tmp);

		tmp = RREG32(RS690_HDP_FB_LOCATION);

		seq_printf(m, "HDP_FB_LOCATION 0x%08x\n", tmp);

	} else {

		tmp = RREG32(RADEON_AGP_BASE);

		seq_printf(m, "AGP_BASE 0x%08x\n", tmp);

		tmp = RREG32(RS480_AGP_BASE_2);

		seq_printf(m, "AGP_BASE_2 0x%08x\n", tmp);

		tmp = RREG32(RADEON_MC_AGP_LOCATION);

		seq_printf(m, "MC_AGP_LOCATION 0x%08x\n", tmp);

	}

	tmp = RREG32_MC(RS480_GART_BASE);

	seq_printf(m, "GART_BASE 0x%08x\n", tmp);

	tmp = RREG32_MC(RS480_GART_FEATURE_ID);

	seq_printf(m, "GART_FEATURE_ID 0x%08x\n", tmp);

	tmp = RREG32_MC(RS480_AGP_MODE_CNTL);

	seq_printf(m, "AGP_MODE_CONTROL 0x%08x\n", tmp);

	tmp = RREG32_MC(RS480_MC_MISC_CNTL);

	seq_printf(m, "MC_MISC_CNTL 0x%08x\n", tmp);

	tmp = RREG32_MC(0x5F);

	seq_printf(m, "MC_MISC_UMA_CNTL 0x%08x\n", tmp);

	tmp = RREG32_MC(RS480_AGP_ADDRESS_SPACE_SIZE);

	seq_printf(m, "AGP_ADDRESS_SPACE_SIZE 0x%08x\n", tmp);

	tmp = RREG32_MC(RS480_GART_CACHE_CNTRL);

	seq_printf(m, "GART_CACHE_CNTRL 0x%08x\n", tmp);

	tmp = RREG32_MC(0x3B);

	seq_printf(m, "MC_GART_ERROR_ADDRESS 0x%08x\n", tmp);

	tmp = RREG32_MC(0x3C);

	seq_printf(m, "MC_GART_ERROR_ADDRESS_HI 0x%08x\n", tmp);

	tmp = RREG32_MC(0x30);

	seq_printf(m, "GART_ERROR_0 0x%08x\n", tmp);

	tmp = RREG32_MC(0x31);

	seq_printf(m, "GART_ERROR_1 0x%08x\n", tmp);

	tmp = RREG32_MC(0x32);

	seq_printf(m, "GART_ERROR_2 0x%08x\n", tmp);

	tmp = RREG32_MC(0x33);

	seq_printf(m, "GART_ERROR_3 0x%08x\n", tmp);

	tmp = RREG32_MC(0x34);

	seq_printf(m, "GART_ERROR_4 0x%08x\n", tmp);

	tmp = RREG32_MC(0x35);

	seq_printf(m, "GART_ERROR_5 0x%08x\n", tmp);

	tmp = RREG32_MC(0x36);

	seq_printf(m, "GART_ERROR_6 0x%08x\n", tmp);

	tmp = RREG32_MC(0x37);

	seq_printf(m, "GART_ERROR_7 0x%08x\n", tmp);

	return 0;

}

static struct drm_info_list rs400_gart_info_list[] = {

	{"rs400_gart_info", rs400_debugfs_gart_info, 0, NULL},

};

#endif

static int rs400_debugfs_pcie_gart_info_init(struct radeon_device *rdev)

{

#if defined(CONFIG_DEBUG_FS)

	return radeon_debugfs_add_files(rdev, rs400_gart_info_list, 1);

#else

	return 0;

#endif

}

static void rs400_mc_program(struct radeon_device *rdev)

{

	struct r100_mc_save save;

	/* Stops all mc clients */

	r100_mc_stop(rdev, &save);

	/* Wait for mc idle */

	if (rs400_mc_wait_for_idle(rdev))

		dev_warn(rdev->dev, "rs400: Wait MC idle timeout before updating MC.\n");

	WREG32(R_000148_MC_FB_LOCATION,

		S_000148_MC_FB_START(rdev->mc.vram_start >> 16) |

		S_000148_MC_FB_TOP(rdev->mc.vram_end >> 16));

	r100_mc_resume(rdev, &save);

}

static int rs400_startup(struct radeon_device *rdev)

{

	int r;

	r100_set_common_regs(rdev);

	rs400_mc_program(rdev);

	/* Resume clock */

	r300_clock_startup(rdev);

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

	rs400_gpu_init(rdev);

	r100_enable_bm(rdev);

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

	 * memory through TTM but finalize after TTM) */

	r = rs400_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;

	}

	r100_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 rs400_init(struct radeon_device *rdev)

{

	int r;

	/* Disable VGA */

	r100_vga_render_disable(rdev);

	/* Initialize scratch registers */

	radeon_scratch_init(rdev);

	/* Initialize surface registers */

	radeon_surface_init(rdev);

	/* TODO: disable VGA need to use VGA request */

	/* 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) {

		dev_err(rdev->dev, "Expecting combios for RS400/RS480 GPU\n");

		return -EINVAL;

	} else {

		r = radeon_combios_init(rdev);

		if (r)

			return r;

	}

	/* 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 */

	rs400_mc_init(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 = rs400_gart_init(rdev);

	if (r)

		return r;

	r300_set_reg_safe(rdev);

	/* Initialize power management */

	radeon_pm_init(rdev);

	rdev->accel_working = true;

	r = rs400_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);

		rs400_gart_fini(rdev);

//		radeon_irq_kms_fini(rdev);

		rdev->accel_working = false;

	}

	return 0;

}