/*
 * Copyright 2010 Jerome Glisse <glisse@freedesktop.org>
 *
 * 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
 * on the rights to use, copy, modify, merge, publish, distribute, sub
 * license, 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 NON-INFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHOR(S) AND/OR THEIR 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:
 *      Jerome Glisse
 */
#ifndef SI_PIPE_H
#define SI_PIPE_H

#include "../radeon/r600_pipe_common.h"

#include "pipe/p_screen.h"
#include "pipe/p_context.h"
#include "util/u_format.h"
#include "util/u_math.h"
#include "util/u_slab.h"
#include "si.h"
#include "sid.h"
#include "si_public.h"
#include "si_pm4.h"
#include "si_resource.h"
#include "si_state.h"

#ifdef PIPE_ARCH_BIG_ENDIAN
#define SI_BIG_ENDIAN 1
#else
#define SI_BIG_ENDIAN 0
#endif

#define SI_TRACE_CS 0
#define SI_TRACE_CS_DWORDS		6

#define SI_MAX_DRAW_CS_DWORDS 18

struct si_pipe_compute;

struct si_screen {
	struct r600_common_screen	b;
#if SI_TRACE_CS
	struct r600_resource		*trace_bo;
	uint32_t			*trace_ptr;
	unsigned			cs_count;
#endif
};

struct si_pipe_sampler_view {
	struct pipe_sampler_view	base;
	struct r600_resource		*resource;
	uint32_t			state[8];
	uint32_t			fmask_state[8];
};

struct si_pipe_sampler_state {
	uint32_t			val[4];
	uint32_t			border_color[4];
};

struct si_cs_shader_state {
	struct si_pipe_compute		*program;
};

struct si_textures_info {
	struct si_sampler_views		views;
	struct si_pipe_sampler_state	*samplers[NUM_TEX_UNITS];
	unsigned			n_views;
	uint32_t			depth_texture_mask; /* which textures are depth */
	uint32_t			compressed_colortex_mask;
	unsigned			n_samplers;
};

#define SI_NUM_ATOMS(sctx) (sizeof((sctx)->atoms)/sizeof((sctx)->atoms.array[0]))
#define SI_NUM_SHADERS (PIPE_SHADER_FRAGMENT+1)

struct si_context {
	struct r600_common_context	b;
	struct blitter_context		*blitter;
	void				*custom_dsa_flush_depth_stencil[8];
	void				*custom_dsa_flush_depth[8];
	void				*custom_dsa_flush_stencil[8];
	void				*custom_dsa_flush_inplace;
	void				*custom_blend_resolve;
	void				*custom_blend_decompress;
	struct si_screen		*screen;

	union {
		struct {
			/* The order matters. */
			struct r600_atom *const_buffers[SI_NUM_SHADERS];
			struct r600_atom *sampler_views[SI_NUM_SHADERS];
			struct r600_atom *streamout_buffers;
			/* Caches must be flushed after resource descriptors are
			 * updated in memory. */
			struct r600_atom *cache_flush;
			struct r600_atom *streamout_begin;
		};
		struct r600_atom *array[0];
	} atoms;

	struct si_vertex_element	*vertex_elements;
	struct pipe_framebuffer_state	framebuffer;
	unsigned			fb_log_samples;
	unsigned			fb_cb0_is_integer;
	unsigned			fb_compressed_cb_mask;
	unsigned			pa_sc_line_stipple;
	unsigned			pa_su_sc_mode_cntl;
	/* for saving when using blitter */
	struct pipe_stencil_ref		stencil_ref;
	struct si_pipe_shader_selector	*ps_shader;
	struct si_pipe_shader_selector	*vs_shader;
	struct si_cs_shader_state	cs_shader_state;
	/* shader information */
	unsigned			sprite_coord_enable;
	unsigned			export_16bpc;
	struct si_buffer_resources	const_buffers[SI_NUM_SHADERS];
	struct si_buffer_resources	streamout_buffers;
	struct si_textures_info	samplers[SI_NUM_SHADERS];
	struct r600_resource		*border_color_table;
	unsigned			border_color_offset;

	unsigned default_ps_gprs, default_vs_gprs;

	/* Below are variables from the old r600_context.
	 */
	unsigned		pm4_dirty_cdwords;

	/* Vertex and index buffers. */
	bool			vertex_buffers_dirty;
	struct pipe_index_buffer index_buffer;
	struct pipe_vertex_buffer vertex_buffer[PIPE_MAX_ATTRIBS];
	unsigned		nr_vertex_buffers;

	/* With rasterizer discard, there doesn't have to be a pixel shader.
	 * In that case, we bind this one: */
	void			*dummy_pixel_shader;
	struct r600_atom	cache_flush;
	struct pipe_constant_buffer null_const_buf; /* used for set_constant_buffer(NULL) on CIK */

	/* SI state handling */
	union si_state	queued;
	union si_state	emitted;
};

/* si_blit.c */
void si_init_blit_functions(struct si_context *sctx);
void si_flush_depth_textures(struct si_context *sctx,
			     struct si_textures_info *textures);
void si_decompress_color_textures(struct si_context *sctx,
				  struct si_textures_info *textures);

/* si_buffer.c */
void si_upload_index_buffer(struct si_context *sctx,
			    struct pipe_index_buffer *ib, unsigned count);


/* si_pipe.c */
void si_flush(struct pipe_context *ctx, struct pipe_fence_handle **fence,
	       unsigned flags);
const char *si_get_llvm_processor_name(enum radeon_family family);

/* si_translate.c */
void si_translate_index_buffer(struct si_context *sctx,
			       struct pipe_index_buffer *ib,
			       unsigned count);

#if SI_TRACE_CS
void si_trace_emit(struct si_context *sctx);
#endif

/* si_compute.c */
void si_init_compute_functions(struct si_context *sctx);

/* si_uvd.c */
struct pipe_video_codec *si_uvd_create_decoder(struct pipe_context *context,
					       const struct pipe_video_codec *templ);

struct pipe_video_buffer *si_video_buffer_create(struct pipe_context *pipe,
						 const struct pipe_video_buffer *tmpl);

/*
 * common helpers
 */
static INLINE uint32_t S_FIXED(float value, uint32_t frac_bits)
{
	return value * (1 << frac_bits);
}
#define ALIGN_DIVUP(x, y) (((x) + (y) - 1) / (y))

static INLINE unsigned si_map_swizzle(unsigned swizzle)
{
	switch (swizzle) {
	case UTIL_FORMAT_SWIZZLE_Y:
		return V_008F0C_SQ_SEL_Y;
	case UTIL_FORMAT_SWIZZLE_Z:
		return V_008F0C_SQ_SEL_Z;
	case UTIL_FORMAT_SWIZZLE_W:
		return V_008F0C_SQ_SEL_W;
	case UTIL_FORMAT_SWIZZLE_0:
		return V_008F0C_SQ_SEL_0;
	case UTIL_FORMAT_SWIZZLE_1:
		return V_008F0C_SQ_SEL_1;
	default: /* UTIL_FORMAT_SWIZZLE_X */
		return V_008F0C_SQ_SEL_X;
	}
}

static inline unsigned si_tex_aniso_filter(unsigned filter)
{
	if (filter <= 1)   return 0;
	if (filter <= 2)   return 1;
	if (filter <= 4)   return 2;
	if (filter <= 8)   return 3;
	 /* else */        return 4;
}

/* 12.4 fixed-point */
static INLINE unsigned si_pack_float_12p4(float x)
{
	return x <= 0    ? 0 :
	       x >= 4096 ? 0xffff : x * 16;
}

#endif