/*
Copyright (C) The Weather Channel, Inc.  2002.
Copyright (C) 2004 Nicolai Haehnle.
All Rights Reserved.

The Weather Channel (TM) funded Tungsten Graphics to develop the
initial release of the Radeon 8500 driver under the XFree86 license.
This notice must be preserved.

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 (including the
next paragraph) 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 OWNER(S) AND/OR ITS SUPPLIERS 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:
 *   Nicolai Haehnle <prefect_@gmx.net>
 */

#include "glheader.h"
#include "state.h"
#include "imports.h"
#include "macros.h"
#include "context.h"
#include "dd.h"
#include "simple_list.h"

#include "api_arrayelt.h"
#include "swrast/swrast.h"
#include "swrast_setup/swrast_setup.h"
#include "array_cache/acache.h"
#include "tnl/tnl.h"

#include "radeon_ioctl.h"
#include "r300_context.h"
#include "r300_ioctl.h"
#include "r300_state.h"
#include "r300_reg.h"
#include "r300_program.h"


/**
 * Called by Mesa after an internal state update.
 */
static void r300InvalidateState(GLcontext * ctx, GLuint new_state)
{
	r300ContextPtr r300 = R300_CONTEXT(ctx);

	_swrast_InvalidateState(ctx, new_state);
	_swsetup_InvalidateState(ctx, new_state);
	_ac_InvalidateState(ctx, new_state);
	_tnl_InvalidateState(ctx, new_state);
	_ae_invalidate_state(ctx, new_state);

	/* Go inefficiency! */
	r300ResetHwState(r300);
}


/**
 * Completely recalculates hardware state based on the Mesa state.
 */
void r300ResetHwState(r300ContextPtr r300)
{
	int i;

	if (RADEON_DEBUG & DEBUG_STATE)
		fprintf(stderr, "%s\n", __FUNCTION__);

	{
		__DRIdrawablePrivate *dPriv = r300->radeon.dri.drawable;
		GLfloat xoffset = dPriv ? (GLfloat) dPriv->x : 0;
		GLfloat yoffset = dPriv ? (GLfloat) dPriv->y + dPriv->h : 0;
		const GLfloat *v = r300->radeon.glCtx->Viewport._WindowMap.m;

		r300->hw.vpt.cmd[R300_VPT_XSCALE] =
			r300PackFloat32(v[MAT_SX]);
		r300->hw.vpt.cmd[R300_VPT_XOFFSET] =
			r300PackFloat32(v[MAT_TX] + xoffset);
		r300->hw.vpt.cmd[R300_VPT_YSCALE] =
			r300PackFloat32(-v[MAT_SY]);
		r300->hw.vpt.cmd[R300_VPT_YOFFSET] =
			r300PackFloat32(-v[MAT_TY] + yoffset);
		r300->hw.vpt.cmd[R300_VPT_YSCALE] =
			r300PackFloat32(v[MAT_SZ]);
		r300->hw.vpt.cmd[R300_VPT_YOFFSET] =
			r300PackFloat32(v[MAT_TZ]);
	}

//BEGIN: TODO
	r300->hw.unk2080.cmd[1] = 0x0030045A;

	r300->hw.ovf.cmd[R300_OVF_FMT_0] = 0x00000003;
	r300->hw.ovf.cmd[R300_OVF_FMT_1] = 0x00000000;

	r300->hw.unk20B0.cmd[1] = 0x0000040A;
	r300->hw.unk20B0.cmd[2] = 0x00000008;

	r300->hw.unk2134.cmd[1] = 0x00FFFFFF;
	r300->hw.unk2134.cmd[2] = 0x00000000;

	r300->hw.unk2140.cmd[1] = 0x00000000;

	((drm_r300_cmd_header_t*)r300->hw.vir[0].cmd)->unchecked_state.count = 1;
	r300->hw.vir[0].cmd[1] = 0x21030003;

	((drm_r300_cmd_header_t*)r300->hw.vir[1].cmd)->unchecked_state.count = 1;
	r300->hw.vir[1].cmd[1] = 0xF688F688;

	r300->hw.vic.cmd[R300_VIR_CNTL_0] = 0x00000001;
	r300->hw.vic.cmd[R300_VIR_CNTL_1] = 0x00000405;

	r300->hw.unk21DC.cmd[1] = 0xAAAAAAAA;

	r300->hw.unk221C.cmd[1] = R300_221C_NORMAL;

	r300->hw.unk2220.cmd[1] = r300PackFloat32(1.0);
	r300->hw.unk2220.cmd[2] = r300PackFloat32(1.0);
	r300->hw.unk2220.cmd[3] = r300PackFloat32(1.0);
	r300->hw.unk2220.cmd[4] = r300PackFloat32(1.0);

	if (GET_CHIP(r300->radeon.radeonScreen) == RADEON_CHIP_R300)
		r300->hw.unk2288.cmd[1] = R300_2288_R300;
	else
		r300->hw.unk2288.cmd[1] = R300_2288_RV350;

	r300->hw.pvs.cmd[R300_PVS_CNTL_1] = 0;
	r300->hw.pvs.cmd[R300_PVS_CNTL_2] = 0;
	r300->hw.pvs.cmd[R300_PVS_CNTL_3] = 0;

	r300->hw.unk4008.cmd[1] = 0x00000007;

	r300->hw.unk4010.cmd[1] = 0x66666666;
	r300->hw.unk4010.cmd[2] = 0x06666666;
	if (GET_CHIP(r300->radeon.radeonScreen) == RADEON_CHIP_R300)
		r300->hw.unk4010.cmd[3] = 0x00000017;
	else
		r300->hw.unk4010.cmd[3] = 0x00000011;
	r300->hw.unk4010.cmd[4] = 0x00000000;
	r300->hw.unk4010.cmd[5] = 0x00000000;

	r300->hw.txe.cmd[R300_TXE_ENABLE] = 0;

	r300->hw.unk4200.cmd[1] = r300PackFloat32(0.0);
	r300->hw.unk4200.cmd[2] = r300PackFloat32(0.0);
	r300->hw.unk4200.cmd[3] = r300PackFloat32(1.0);
	r300->hw.unk4200.cmd[4] = r300PackFloat32(1.0);

	r300->hw.unk4214.cmd[1] = 0x00050005;

	r300->hw.ps.cmd[R300_PS_POINTSIZE] = (6 << R300_POINTSIZE_X_SHIFT) |
					     (6 << R300_POINTSIZE_Y_SHIFT);

	r300->hw.unk4230.cmd[1] = 0x01800000;
	r300->hw.unk4230.cmd[2] = 0x00020006;
	r300->hw.unk4230.cmd[3] = r300PackFloat32(1.0 / 192.0);

	r300->hw.unk4260.cmd[1] = 0;
	r300->hw.unk4260.cmd[2] = r300PackFloat32(0.0);
	r300->hw.unk4260.cmd[3] = r300PackFloat32(1.0);

	r300->hw.unk4274.cmd[1] = 0x00000002;
	r300->hw.unk4274.cmd[2] = 0x0003AAAA;
	r300->hw.unk4274.cmd[3] = 0x00000000;
	r300->hw.unk4274.cmd[4] = 0x00000000;

	r300->hw.unk4288.cmd[1] = 0x00000000;
	r300->hw.unk4288.cmd[2] = 0x00000001;
	r300->hw.unk4288.cmd[3] = 0x00000000;
	r300->hw.unk4288.cmd[4] = 0x00000000;
	r300->hw.unk4288.cmd[5] = 0x00000000;

	r300->hw.unk42A0.cmd[1] = 0x00000000;

	r300->hw.unk42B4.cmd[1] = 0x00000000;
	r300->hw.unk42B4.cmd[2] = 0x00000000;

	r300->hw.unk42C0.cmd[1] = 0x4B7FFFFF;
	r300->hw.unk42C0.cmd[2] = 0x00000000;

	r300->hw.rc.cmd[1] = R300_RS_CNTL_0_UNKNOWN_7;
	r300->hw.rc.cmd[2] = 0;

	for(i = 1; i <= 8; ++i)
		r300->hw.ri.cmd[i] = 0;

	((drm_r300_cmd_header_t*)r300->hw.rr.cmd)->unchecked_state.count = 1;
	for(i = 1; i <= 8; ++i)
		r300->hw.rr.cmd[1] = 0;

	r300->hw.unk43A4.cmd[1] = 0x0000001C;
	r300->hw.unk43A4.cmd[2] = 0x2DA49525;

	r300->hw.unk43E8.cmd[1] = 0x00FFFFFF;

	r300->hw.fp.cmd[R300_FP_CNTL0] = 0;
	r300->hw.fp.cmd[R300_FP_CNTL1] = 0;
	r300->hw.fp.cmd[R300_FP_CNTL2] = 0;
	r300->hw.fp.cmd[R300_FP_NODE0] = 0;
	r300->hw.fp.cmd[R300_FP_NODE1] = 0;
	r300->hw.fp.cmd[R300_FP_NODE2] = 0;
	r300->hw.fp.cmd[R300_FP_NODE3] = 0;

	r300->hw.unk46A4.cmd[1] = 0x00001B01;
	r300->hw.unk46A4.cmd[2] = 0x00001B0F;
	r300->hw.unk46A4.cmd[3] = 0x00001B0F;
	r300->hw.unk46A4.cmd[4] = 0x00001B0F;
	r300->hw.unk46A4.cmd[5] = 0x00000001;

	for(i = 1; i <= 64; ++i) {
		/* create NOP instructions */
		r300->hw.fpi[0].cmd[i] = FP_INSTRC(MAD, FP_ARGC(SRC0C_XYZ), FP_ARGC(ONE), FP_ARGC(ZERO));
		r300->hw.fpi[1].cmd[i] = FP_SELC(0,XYZ,NO,FP_TMP(0),0,0);
		r300->hw.fpi[2].cmd[i] = FP_INSTRA(MAD, FP_ARGA(SRC0A), FP_ARGA(ONE), FP_ARGA(ZERO));
		r300->hw.fpi[3].cmd[i] = FP_SELA(0,W,NO,FP_TMP(0),0,0);
	}

	r300->hw.unk4BC0.cmd[1] = 0;

	r300->hw.unk4BC8.cmd[1] = 0;
	r300->hw.unk4BC8.cmd[2] = 0;
	r300->hw.unk4BC8.cmd[3] = 0;

	r300->hw.at.cmd[R300_AT_ALPHA_TEST] = 0;

	r300->hw.unk4BD8.cmd[1] = 0;

	r300->hw.unk4E00.cmd[1] = 0;

	r300->hw.bld.cmd[R300_BLD_CBLEND] = 0;
	r300->hw.bld.cmd[R300_BLD_ABLEND] = 0;

	r300->hw.cmk.cmd[R300_CMK_COLORMASK] = 0xF;

	r300->hw.unk4E10.cmd[1] = 0;
	r300->hw.unk4E10.cmd[2] = 0;
	r300->hw.unk4E10.cmd[3] = 0;

	r300->hw.cb.cmd[R300_CB_OFFSET] =
		r300->radeon.radeonScreen->backOffset +
		r300->radeon.radeonScreen->fbLocation;
	r300->hw.cb.cmd[R300_CB_PITCH] = r300->radeon.radeonScreen->backPitch
		| R300_COLOR_UNKNOWN_22_23;

	r300->hw.unk4E50.cmd[1] = 0;
	r300->hw.unk4E50.cmd[2] = 0;
	r300->hw.unk4E50.cmd[3] = 0;
	r300->hw.unk4E50.cmd[4] = 0;
	r300->hw.unk4E50.cmd[5] = 0;
	r300->hw.unk4E50.cmd[6] = 0;
	r300->hw.unk4E50.cmd[7] = 0;
	r300->hw.unk4E50.cmd[8] = 0;
	r300->hw.unk4E50.cmd[9] = 0;

	r300->hw.unk4E88.cmd[1] = 0;

	r300->hw.zc.cmd[R300_ZC_CNTL_0] = 0;
	r300->hw.zc.cmd[R300_ZC_CNTL_1] = 0;

	r300->hw.unk4F08.cmd[1] = 0x00FFFF00;
	r300->hw.unk4F08.cmd[2] = 0x00000002;
	r300->hw.unk4F08.cmd[3] = 0x00000000;
	r300->hw.unk4F08.cmd[4] = 0x00000003;
	r300->hw.unk4F08.cmd[5] = 0x00000000;

	r300->hw.zb.cmd[R300_ZB_OFFSET] =
		r300->radeon.radeonScreen->depthOffset +
		r300->radeon.radeonScreen->fbLocation;
	r300->hw.zb.cmd[R300_ZB_PITCH] = r300->radeon.radeonScreen->depthPitch;

	r300->hw.unk4F28.cmd[1] = 0;

	r300->hw.unk4F30.cmd[1] = 0;
	r300->hw.unk4F30.cmd[2] = 0;

	r300->hw.unk4F44.cmd[1] = 0;

	r300->hw.unk4F54.cmd[1] = 0;

	((drm_r300_cmd_header_t*)r300->hw.vpi.cmd)->vpu.count = 0;
	for(i = 1; i < R300_VPI_CMDSIZE; i += 4) {
		/* MOV t0, t0 */
		r300->hw.vpi.cmd[i+0] = VP_OUT(ADD,TMP,0,XYZW);
		r300->hw.vpi.cmd[i+1] = VP_IN(TMP,0);
		r300->hw.vpi.cmd[i+2] = VP_ZERO();
		r300->hw.vpi.cmd[i+3] = VP_ZERO();
	}

	((drm_r300_cmd_header_t*)r300->hw.vpp.cmd)->vpu.count = 0;
	for(i = 1; i < R300_VPP_CMDSIZE; ++i)
		r300->hw.vpp.cmd[i] = 0;

	r300->hw.vps.cmd[R300_VPS_ZERO_0] = 0;
	r300->hw.vps.cmd[R300_VPS_ZERO_1] = 0;
	r300->hw.vps.cmd[R300_VPS_POINTSIZE] = r300PackFloat32(1.0);
	r300->hw.vps.cmd[R300_VPS_ZERO_3] = 0;
//END: TODO

	r300->hw.all_dirty = GL_TRUE;
}


/**
 * Calculate initial hardware state and register state functions.
 * Assumes that the command buffer and state atoms have been
 * initialized already.
 */
void r300InitState(r300ContextPtr r300)
{
	struct dd_function_table* functions;

	r300ResetHwState(r300);

	/* Setup state functions */
	functions = &r300->radeon.glCtx->Driver;
	functions->UpdateState = r300InvalidateState;
}