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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 "drmP.h"

#include "radeon_reg.h"

#include "radeon.h"

#include "radeon_asic.h"

#include "atom.h"

#include "r100d.h"

#include "r420d.h"

#include "r420_reg_safe.h"

static void r420_set_reg_safe(struct radeon_device *rdev)

{

	rdev->config.r300.reg_safe_bm = r420_reg_safe_bm;

	rdev->config.r300.reg_safe_bm_size = ARRAY_SIZE(r420_reg_safe_bm);

}

void r420_pipes_init(struct radeon_device *rdev)

{

	unsigned tmp;

	unsigned gb_pipe_select;

	unsigned num_pipes;

	/* GA_ENHANCE workaround TCL deadlock issue */

	WREG32(R300_GA_ENHANCE, R300_GA_DEADLOCK_CNTL | R300_GA_FASTSYNC_CNTL |

	       (1 << 2) | (1 << 3));

	/* add idle wait as per freedesktop.org bug 24041 */

	if (r100_gui_wait_for_idle(rdev)) {

		printk(KERN_WARNING "Failed to wait GUI idle while "

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

	}

	/* get max number of pipes */

	gb_pipe_select = RREG32(R400_GB_PIPE_SELECT);

	num_pipes = ((gb_pipe_select >> 12) & 3) + 1;

	/* SE chips have 1 pipe */

	if ((rdev->pdev->device == 0x5e4c) ||

	    (rdev->pdev->device == 0x5e4f))

		num_pipes = 1;

	rdev->num_gb_pipes = num_pipes;

	tmp = 0;

	switch (num_pipes) {

	default:

		/* force to 1 pipe */

		num_pipes = 1;

	case 1:

		tmp = (0 << 1);

		break;

	case 2:

		tmp = (3 << 1);

		break;

	case 3:

		tmp = (6 << 1);

		break;

	case 4:

		tmp = (7 << 1);

		break;

	}

	WREG32(R500_SU_REG_DEST, (1 << num_pipes) - 1);

	/* Sub pixel 1/12 so we can have 4K rendering according to doc */

	tmp |= R300_TILE_SIZE_16 | R300_ENABLE_TILING;

	WREG32(R300_GB_TILE_CONFIG, tmp);

	if (r100_gui_wait_for_idle(rdev)) {

		printk(KERN_WARNING "Failed to wait GUI idle while "

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

	}

	tmp = RREG32(R300_DST_PIPE_CONFIG);

	WREG32(R300_DST_PIPE_CONFIG, tmp | R300_PIPE_AUTO_CONFIG);

	WREG32(R300_RB2D_DSTCACHE_MODE,

	       RREG32(R300_RB2D_DSTCACHE_MODE) |

	       R300_DC_AUTOFLUSH_ENABLE |

	       R300_DC_DC_DISABLE_IGNORE_PE);

	if (r100_gui_wait_for_idle(rdev)) {

		printk(KERN_WARNING "Failed to wait GUI idle while "

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

	}

	if (rdev->family == CHIP_RV530) {

		tmp = RREG32(RV530_GB_PIPE_SELECT2);

		if ((tmp & 3) == 3)

			rdev->num_z_pipes = 2;

		else

			rdev->num_z_pipes = 1;

	} else

		rdev->num_z_pipes = 1;

	DRM_INFO("radeon: %d quad pipes, %d z pipes initialized.\n",

		 rdev->num_gb_pipes, rdev->num_z_pipes);

}

u32 r420_mc_rreg(struct radeon_device *rdev, u32 reg)

{

	u32 r;

	WREG32(R_0001F8_MC_IND_INDEX, S_0001F8_MC_IND_ADDR(reg));

	r = RREG32(R_0001FC_MC_IND_DATA);

	return r;

}

void r420_mc_wreg(struct radeon_device *rdev, u32 reg, u32 v)

{

	WREG32(R_0001F8_MC_IND_INDEX, S_0001F8_MC_IND_ADDR(reg) |

		S_0001F8_MC_IND_WR_EN(1));

	WREG32(R_0001FC_MC_IND_DATA, v);

}

static void r420_debugfs(struct radeon_device *rdev)

{

	if (r100_debugfs_rbbm_init(rdev)) {

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

	}

	if (r420_debugfs_pipes_info_init(rdev)) {

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

	}

}

static void r420_clock_resume(struct radeon_device *rdev)

{

	u32 sclk_cntl;

	if (radeon_dynclks != -1 && radeon_dynclks)

		radeon_atom_set_clock_gating(rdev, 1);

	sclk_cntl = RREG32_PLL(R_00000D_SCLK_CNTL);

	sclk_cntl |= S_00000D_FORCE_CP(1) | S_00000D_FORCE_VIP(1);

	if (rdev->family == CHIP_R420)

		sclk_cntl |= S_00000D_FORCE_PX(1) | S_00000D_FORCE_TX(1);

	WREG32_PLL(R_00000D_SCLK_CNTL, sclk_cntl);

}

static void r420_cp_errata_init(struct radeon_device *rdev)

{

	/* RV410 and R420 can lock up if CP DMA to host memory happens

	 * while the 2D engine is busy.

	 *

	 * The proper workaround is to queue a RESYNC at the beginning

	 * of the CP init, apparently.

	 */

	radeon_scratch_get(rdev, &rdev->config.r300.resync_scratch);

	radeon_ring_lock(rdev, 8);

	radeon_ring_write(rdev, PACKET0(R300_CP_RESYNC_ADDR, 1));

	radeon_ring_write(rdev, rdev->config.r300.resync_scratch);

	radeon_ring_write(rdev, 0xDEADBEEF);

	radeon_ring_unlock_commit(rdev);

}

static void r420_cp_errata_fini(struct radeon_device *rdev)

{

	/* Catch the RESYNC we dispatched all the way back,

	 * at the very beginning of the CP init.

	 */

	radeon_ring_lock(rdev, 8);

	radeon_ring_write(rdev, PACKET0(R300_RB3D_DSTCACHE_CTLSTAT, 0));

	radeon_ring_write(rdev, R300_RB3D_DC_FINISH);

	radeon_ring_unlock_commit(rdev);

	radeon_scratch_free(rdev, rdev->config.r300.resync_scratch);

}

static int r420_startup(struct radeon_device *rdev)

{

	int r;

	/* set common regs */

	r100_set_common_regs(rdev);

	/* program mc */

	r300_mc_program(rdev);

	/* Resume clock */

	r420_clock_resume(rdev);

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

	 * memory through TTM but finalize after TTM) */

	if (rdev->flags & RADEON_IS_PCIE) {

		r = rv370_pcie_gart_enable(rdev);

		if (r)

			return r;

	}

	if (rdev->flags & RADEON_IS_PCI) {

		r = r100_pci_gart_enable(rdev);

		if (r)

			return r;

	}

	r420_pipes_init(rdev);

	/* Enable IRQ */

	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;

	}

	r420_cp_errata_init(rdev);

	return 0;

}

int r420_resume(struct radeon_device *rdev)

{

	/* Make sur GART are not working */

	if (rdev->flags & RADEON_IS_PCIE)

		rv370_pcie_gart_disable(rdev);

	if (rdev->flags & RADEON_IS_PCI)

		r100_pci_gart_disable(rdev);

	/* Resume clock before doing reset */

	r420_clock_resume(rdev);

	/* 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 (rdev->is_atom_bios) {

		atom_asic_init(rdev->mode_info.atom_context);

	} else {

		radeon_combios_asic_init(rdev->ddev);

	}

	/* Resume clock after posting */

	r420_clock_resume(rdev);

	/* Initialize surface registers */

	radeon_surface_init(rdev);

	return r420_startup(rdev);

}

int r420_init(struct radeon_device *rdev)

{

	int r;

	/* 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) {

		r = radeon_atombios_init(rdev);

		if (r) {

			return r;

		}

	} 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 AGP */

	if (rdev->flags & RADEON_IS_AGP) {

		r = radeon_agp_init(rdev);

	if (r) {

			radeon_agp_disable(rdev);

	}

	}

	/* initialize memory controller */

	r300_mc_init(rdev);

	r420_debugfs(rdev);

	/* Fence driver */

	/* Memory manager */

	r = radeon_bo_init(rdev);

	if (r) {

		return r;

	}

	if (rdev->family == CHIP_R420)

		r100_enable_bm(rdev);

	if (rdev->flags & RADEON_IS_PCIE) {

		r = rv370_pcie_gart_init(rdev);

		if (r)

			return r;

	}

	if (rdev->flags & RADEON_IS_PCI) {

		r = r100_pci_gart_init(rdev);

		if (r)

			return r;

	}

	r420_set_reg_safe(rdev);

	rdev->accel_working = true;

	r = r420_startup(rdev);

	if (r) {

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

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

		if (rdev->flags & RADEON_IS_PCIE)

			rv370_pcie_gart_fini(rdev);

		if (rdev->flags & RADEON_IS_PCI)

			r100_pci_gart_fini(rdev);

		rdev->accel_working = false;

	}

	return 0;

}

/*

 * Debugfs info

 */

#if defined(CONFIG_DEBUG_FS)

static int r420_debugfs_pipes_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(R400_GB_PIPE_SELECT);

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

	tmp = RREG32(R300_GB_TILE_CONFIG);

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

	tmp = RREG32(R300_DST_PIPE_CONFIG);

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

	return 0;

}

static struct drm_info_list r420_pipes_info_list[] = {

	{"r420_pipes_info", r420_debugfs_pipes_info, 0, NULL},

};

#endif

int r420_debugfs_pipes_info_init(struct radeon_device *rdev)

{

#if defined(CONFIG_DEBUG_FS)

	return radeon_debugfs_add_files(rdev, r420_pipes_info_list, 1);

#else

	return 0;

#endif

}