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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 "radeon_reg.h"

#include "radeon.h"

/* rs400,rs480 depends on : */

void r100_hdp_reset(struct radeon_device *rdev);

void r100_mc_disable_clients(struct radeon_device *rdev);

int r300_mc_wait_for_idle(struct radeon_device *rdev);

void r420_pipes_init(struct radeon_device *rdev);

/* This files gather functions specifics to :

 * rs400,rs480

 *

 * Some of these functions might be used by newer ASICs.

 */

void rs400_gpu_init(struct radeon_device *rdev);

int rs400_debugfs_pcie_gart_info_init(struct radeon_device *rdev);

/*

 * GART functions.

 */

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",

			  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;

	}

	if (rdev->family == CHIP_RS400 || rdev->family == CHIP_RS480) {

		/* FIXME: RS400 & RS480 seems to have issue with GART size

		 * if 4G of system memory (needs more testing) */

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

		DRM_ERROR("Forcing to 32M GART size (because of ASIC bug ?)\n");

	}

}

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_enable(struct radeon_device *rdev)

{

	uint32_t size_reg;

	uint32_t tmp;

	int r;

	/* 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");

	}

	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;

	}

	if (rdev->gart.table.ram.ptr == NULL) {

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

		r = radeon_gart_table_ram_alloc(rdev);

		if (r) {

			return r;

		}

	}

	/* 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 = rdev->mc.gtt_location + rdev->mc.gtt_size - 1;

	tmp = REG_SET(RS690_MC_AGP_TOP, tmp >> 16);

	tmp |= REG_SET(RS690_MC_AGP_START, rdev->mc.gtt_location >> 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 = rdev->gart.table_addr & 0xfffff000;

	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)) {

		WREG32_MC(RS480_MC_MISC_CNTL,

			  (RS480_GART_INDEX_REG_EN | RS690_BLOCK_GFX_D3_EN));

	} else {

		WREG32_MC(RS480_MC_MISC_CNTL, RS480_GART_INDEX_REG_EN);

	}

	/* Enable gart */

	WREG32_MC(RS480_AGP_ADDRESS_SPACE_SIZE, (RS480_GART_EN | size_reg));

	rs400_gart_tlb_flush(rdev);

	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);

}

int rs400_gart_set_page(struct radeon_device *rdev, int i, uint64_t addr)

{

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

		return -EINVAL;

	}

	rdev->gart.table.ram.ptr[i] = cpu_to_le32(((uint32_t)addr) | 0xC);

	return 0;

}

/*

 * MC functions.

 */

int rs400_mc_init(struct radeon_device *rdev)

{

	uint32_t tmp;

	int r;

	if (r100_debugfs_rbbm_init(rdev)) {

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

	}

	rs400_gpu_init(rdev);

	rs400_gart_disable(rdev);

	rdev->mc.gtt_location = rdev->mc.vram_size;

	rdev->mc.gtt_location += (rdev->mc.gtt_size - 1);

	rdev->mc.gtt_location &= ~(rdev->mc.gtt_size - 1);

	rdev->mc.vram_location = 0xFFFFFFFFUL;

	r = radeon_mc_setup(rdev);

	if (r) {

		return r;

	}

	r100_mc_disable_clients(rdev);

	if (r300_mc_wait_for_idle(rdev)) {

		printk(KERN_WARNING "Failed to wait MC idle while "

		       "programming pipes. Bad things might happen.\n");

	}

	tmp = rdev->mc.vram_location + rdev->mc.vram_size - 1;

	tmp = REG_SET(RADEON_MC_FB_TOP, tmp >> 16);

	tmp |= REG_SET(RADEON_MC_FB_START, rdev->mc.vram_location >> 16);

	WREG32(RADEON_MC_FB_LOCATION, tmp);

	tmp = RREG32(RADEON_HOST_PATH_CNTL) | RADEON_HP_LIN_RD_CACHE_DIS;

	WREG32(RADEON_HOST_PATH_CNTL, tmp | RADEON_HDP_SOFT_RESET | RADEON_HDP_READ_BUFFER_INVALIDATE);

	(void)RREG32(RADEON_HOST_PATH_CNTL);

	WREG32(RADEON_HOST_PATH_CNTL, tmp);

	(void)RREG32(RADEON_HOST_PATH_CNTL);

	return 0;

}

void rs400_mc_fini(struct radeon_device *rdev)

{

	rs400_gart_disable(rdev);

	radeon_gart_table_ram_free(rdev);

	radeon_gart_fini(rdev);

}

/*

 * Global GPU functions

 */

void rs400_errata(struct radeon_device *rdev)

{

	rdev->pll_errata = 0;

}

void rs400_gpu_init(struct radeon_device *rdev)

{

	/* FIXME: HDP same place on rs400 ? */

	r100_hdp_reset(rdev);

	/* FIXME: is this correct ? */

	r420_pipes_init(rdev);

	if (r300_mc_wait_for_idle(rdev)) {

		printk(KERN_WARNING "Failed to wait MC idle while "

		       "programming pipes. Bad things might happen.\n");

	}

}

/*

 * VRAM info.

 */

void rs400_vram_info(struct radeon_device *rdev)

{

	uint32_t tom;

	rs400_gart_adjust_size(rdev);

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

	rdev->mc.vram_is_ddr = true;

	rdev->mc.vram_width = 128;

	/* read NB_TOM to get the amount of ram stolen for the GPU */

	tom = RREG32(RADEON_NB_TOM);

	rdev->mc.vram_size = (((tom >> 16) - (tom & 0xffff) + 1) << 16);

	WREG32(RADEON_CONFIG_MEMSIZE, rdev->mc.vram_size);

	/* Could aper size report 0 ? */

	rdev->mc.aper_base = drm_get_resource_start(rdev->ddev, 0);

	rdev->mc.aper_size = drm_get_resource_len(rdev->ddev, 0);

}

/*

 * Indirect registers accessor

 */

uint32_t rs400_mc_rreg(struct radeon_device *rdev, uint32_t reg)

{

	uint32_t r;

	WREG32(RS480_NB_MC_INDEX, reg & 0xff);

	r = RREG32(RS480_NB_MC_DATA);

	WREG32(RS480_NB_MC_INDEX, 0xff);

	return r;

}

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

{

	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);

}

/*

 * Debugfs info

 */

#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(0x100);

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

		tmp = RREG32(0x134);

		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

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

}