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/* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */

/*

 * Copyright (C) 2012 Rob Clark 

 *

 * 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 AUTHORS OR COPYRIGHT HOLDERS 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:

 *    Rob Clark 

 */

#include "pipe/p_defines.h"

#include "pipe/p_screen.h"

#include "pipe/p_state.h"

#include "util/u_memory.h"

#include "util/u_inlines.h"

#include "util/u_format.h"

#include "util/u_format_s3tc.h"

#include "util/u_string.h"

#include "util/u_debug.h"

#include "os/os_time.h"

#include 

#include 

#include 

#include "freedreno_screen.h"

#include "freedreno_resource.h"

#include "freedreno_fence.h"

#include "freedreno_util.h"

#include "fd2_screen.h"

#include "fd3_screen.h"

/* XXX this should go away */

#include "state_tracker/drm_driver.h"

static const struct debug_named_value debug_options[] = {

		{"msgs",      FD_DBG_MSGS,   "Print debug messages"},

		{"disasm",    FD_DBG_DISASM, "Dump TGSI and adreno shader disassembly"},

		{"dclear",    FD_DBG_DCLEAR, "Mark all state dirty after clear"},

		{"dgmem",     FD_DBG_DGMEM,  "Mark all state dirty after GMEM tile pass"},

		{"dscis",     FD_DBG_DSCIS,  "Disable scissor optimization"},

		DEBUG_NAMED_VALUE_END

};

DEBUG_GET_ONCE_FLAGS_OPTION(fd_mesa_debug, "FD_MESA_DEBUG", debug_options, 0)

int fd_mesa_debug = 0;

static const char *

fd_screen_get_name(struct pipe_screen *pscreen)

{

	static char buffer[128];

	util_snprintf(buffer, sizeof(buffer), "FD%03d",

			fd_screen(pscreen)->device_id);

	return buffer;

}

static const char *

fd_screen_get_vendor(struct pipe_screen *pscreen)

{

	return "freedreno";

}

static uint64_t

fd_screen_get_timestamp(struct pipe_screen *pscreen)

{

	int64_t cpu_time = os_time_get() * 1000;

	return cpu_time + fd_screen(pscreen)->cpu_gpu_time_delta;

}

static void

fd_screen_fence_ref(struct pipe_screen *pscreen,

		struct pipe_fence_handle **ptr,

		struct pipe_fence_handle *pfence)

{

	fd_fence_ref(fd_fence(pfence), (struct fd_fence **)ptr);

}

static boolean

fd_screen_fence_signalled(struct pipe_screen *screen,

		struct pipe_fence_handle *pfence)

{

	return fd_fence_signalled(fd_fence(pfence));

}

static boolean

fd_screen_fence_finish(struct pipe_screen *screen,

		struct pipe_fence_handle *pfence,

		uint64_t timeout)

{

	return fd_fence_wait(fd_fence(pfence));

}

static void

fd_screen_destroy(struct pipe_screen *pscreen)

{

	struct fd_screen *screen = fd_screen(pscreen);

	if (screen->pipe)

		fd_pipe_del(screen->pipe);

	if (screen->dev)

		fd_device_del(screen->dev);

	free(screen);

}

/*

TODO either move caps to a2xx/a3xx specific code, or maybe have some

tables for things that differ if the delta is not too much..

 */

static int

fd_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)

{

	/* this is probably not totally correct.. but it's a start: */

	switch (param) {

	/* Supported features (boolean caps). */

	case PIPE_CAP_NPOT_TEXTURES:

	case PIPE_CAP_TWO_SIDED_STENCIL:

	case PIPE_CAP_ANISOTROPIC_FILTER:

	case PIPE_CAP_POINT_SPRITE:

	case PIPE_CAP_TEXTURE_SHADOW_MAP:

	case PIPE_CAP_TEXTURE_MIRROR_CLAMP:

	case PIPE_CAP_BLEND_EQUATION_SEPARATE:

	case PIPE_CAP_TEXTURE_SWIZZLE:

	case PIPE_CAP_SHADER_STENCIL_EXPORT:

	case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:

	case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:

	case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:

	case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:

	case PIPE_CAP_SM3:

	case PIPE_CAP_SEAMLESS_CUBE_MAP:

	case PIPE_CAP_PRIMITIVE_RESTART:

	case PIPE_CAP_CONDITIONAL_RENDER:

	case PIPE_CAP_TEXTURE_BARRIER:

	case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:

	case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:

	case PIPE_CAP_TGSI_INSTANCEID:

	case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:

	case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:

	case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:

	case PIPE_CAP_COMPUTE:

	case PIPE_CAP_START_INSTANCE:

	case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:

	case PIPE_CAP_TEXTURE_MULTISAMPLE:

	case PIPE_CAP_USER_CONSTANT_BUFFERS:

		return 1;

	case PIPE_CAP_TGSI_TEXCOORD:

	case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:

		return 0;

	case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:

		return 256;

	case PIPE_CAP_GLSL_FEATURE_LEVEL:

		return 120;

	/* Unsupported features. */

	case PIPE_CAP_INDEP_BLEND_ENABLE:

	case PIPE_CAP_INDEP_BLEND_FUNC:

	case PIPE_CAP_DEPTH_CLIP_DISABLE:

	case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:

	case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:

	case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:

	case PIPE_CAP_SCALED_RESOLVE:

	case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:

	case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:

	case PIPE_CAP_VERTEX_COLOR_CLAMPED:

	case PIPE_CAP_USER_VERTEX_BUFFERS:

	case PIPE_CAP_USER_INDEX_BUFFERS:

	case PIPE_CAP_QUERY_PIPELINE_STATISTICS:

	case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:

		return 0;

	/* Stream output. */

	case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:

	case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:

	case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:

	case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:

		return 0;

	/* Texturing. */

	case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:

	case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:

	case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:

		return 14;

	case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:

		return 9192;

	case PIPE_CAP_MAX_COMBINED_SAMPLERS:

		return 20;

	/* Render targets. */

	case PIPE_CAP_MAX_RENDER_TARGETS:

		return 1;

	/* Timer queries. */

	case PIPE_CAP_QUERY_TIME_ELAPSED:

	case PIPE_CAP_OCCLUSION_QUERY:

	case PIPE_CAP_QUERY_TIMESTAMP:

		return 0;

	case PIPE_CAP_MIN_TEXEL_OFFSET:

		return -8;

	case PIPE_CAP_MAX_TEXEL_OFFSET:

		return 7;

	case PIPE_CAP_ENDIANNESS:

		return PIPE_ENDIAN_LITTLE;

	default:

		DBG("unknown param %d", param);

		return 0;

	}

}

static float

fd_screen_get_paramf(struct pipe_screen *pscreen, enum pipe_capf param)

{

	switch (param) {

	case PIPE_CAPF_MAX_LINE_WIDTH:

	case PIPE_CAPF_MAX_LINE_WIDTH_AA:

	case PIPE_CAPF_MAX_POINT_WIDTH:

	case PIPE_CAPF_MAX_POINT_WIDTH_AA:

		return 8192.0f;

	case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:

		return 16.0f;

	case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:

		return 16.0f;

	case PIPE_CAPF_GUARD_BAND_LEFT:

	case PIPE_CAPF_GUARD_BAND_TOP:

	case PIPE_CAPF_GUARD_BAND_RIGHT:

	case PIPE_CAPF_GUARD_BAND_BOTTOM:

		return 0.0f;

	default:

		DBG("unknown paramf %d", param);

		return 0;

	}

}

static int

fd_screen_get_shader_param(struct pipe_screen *pscreen, unsigned shader,

		enum pipe_shader_cap param)

{

	switch(shader)

	{

	case PIPE_SHADER_FRAGMENT:

	case PIPE_SHADER_VERTEX:

		break;

	case PIPE_SHADER_COMPUTE:

	case PIPE_SHADER_GEOMETRY:

		/* maye we could emulate.. */

		return 0;

	default:

		DBG("unknown shader type %d", shader);

		return 0;

	}

	/* this is probably not totally correct.. but it's a start: */

	switch (param) {

	case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:

	case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:

	case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:

	case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:

		return 16384;

	case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:

		return 8; /* XXX */

	case PIPE_SHADER_CAP_MAX_INPUTS:

		return 32;

	case PIPE_SHADER_CAP_MAX_TEMPS:

		return 256; /* Max native temporaries. */

	case PIPE_SHADER_CAP_MAX_ADDRS:

		/* XXX Isn't this equal to TEMPS? */

		return 1; /* Max native address registers */

	case PIPE_SHADER_CAP_MAX_CONSTS:

	case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:

		return 64;

	case PIPE_SHADER_CAP_MAX_PREDS:

		return 0; /* nothing uses this */

	case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:

		return 1;

	case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:

	case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:

	case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:

	case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:

		return 1;

	case PIPE_SHADER_CAP_SUBROUTINES:

		return 0;

	case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:

	case PIPE_SHADER_CAP_INTEGERS:

		return 0;

	case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:

		return 16;

	case PIPE_SHADER_CAP_PREFERRED_IR:

		return PIPE_SHADER_IR_TGSI;

	default:

		DBG("unknown shader param %d", param);

		return 0;

	}

	return 0;

}

boolean

fd_screen_bo_get_handle(struct pipe_screen *pscreen,

		struct fd_bo *bo,

		unsigned stride,

		struct winsys_handle *whandle)

{

	whandle->stride = stride;

	if (whandle->type == DRM_API_HANDLE_TYPE_SHARED) {

		return fd_bo_get_name(bo, &whandle->handle) == 0;

	} else if (whandle->type == DRM_API_HANDLE_TYPE_KMS) {

		whandle->handle = fd_bo_handle(bo);

		return TRUE;

	} else {

		return FALSE;

	}

}

struct fd_bo *

fd_screen_bo_from_handle(struct pipe_screen *pscreen,

		struct winsys_handle *whandle,

		unsigned *out_stride)

{

	struct fd_screen *screen = fd_screen(pscreen);

	struct fd_bo *bo;

	bo = fd_bo_from_name(screen->dev, whandle->handle);

	if (!bo) {

		DBG("ref name 0x%08x failed", whandle->handle);

		return NULL;

	}

	*out_stride = whandle->stride;

	return bo;

}

struct pipe_screen *

fd_screen_create(struct fd_device *dev)

{

	struct fd_screen *screen = CALLOC_STRUCT(fd_screen);

	struct pipe_screen *pscreen;

	uint64_t val;

	fd_mesa_debug = debug_get_option_fd_mesa_debug();

	if (!screen)

		return NULL;

	pscreen = &screen->base;

	screen->dev = dev;

	// maybe this should be in context?

	screen->pipe = fd_pipe_new(screen->dev, FD_PIPE_3D);

	if (!screen->pipe) {

		DBG("could not create 3d pipe");

		goto fail;

	}

	if (fd_pipe_get_param(screen->pipe, FD_GMEM_SIZE, &val)) {

		DBG("could not get GMEM size");

		goto fail;

	}

	screen->gmemsize_bytes = val;

	if (fd_pipe_get_param(screen->pipe, FD_DEVICE_ID, &val)) {

		DBG("could not get device-id");

		goto fail;

	}

	screen->device_id = val;

	if (fd_pipe_get_param(screen->pipe, FD_GPU_ID, &val)) {

		DBG("could not get gpu-id");

		goto fail;

	}

	screen->gpu_id = val;

	/* explicitly checking for GPU revisions that are known to work.  This

	 * may be overly conservative for a3xx, where spoofing the gpu_id with

	 * the blob driver seems to generate identical cmdstream dumps.  But

	 * on a2xx, there seem to be small differences between the GPU revs

	 * so it is probably better to actually test first on real hardware

	 * before enabling:

	 *

	 * If you have a different adreno version, feel free to add it to one

	 * of the two cases below and see what happens.  And if it works, please

	 * send a patch ;-)

	 */

	switch (screen->gpu_id) {

	case 220:

		fd2_screen_init(pscreen);

		break;

	case 320:

		fd3_screen_init(pscreen);

		break;

	default:

		debug_printf("unsupported GPU: a%03d\n", screen->gpu_id);

		goto fail;

	}

	pscreen->destroy = fd_screen_destroy;

	pscreen->get_param = fd_screen_get_param;

	pscreen->get_paramf = fd_screen_get_paramf;

	pscreen->get_shader_param = fd_screen_get_shader_param;

	fd_resource_screen_init(pscreen);

	pscreen->get_name = fd_screen_get_name;

	pscreen->get_vendor = fd_screen_get_vendor;

	pscreen->get_timestamp = fd_screen_get_timestamp;

	pscreen->fence_reference = fd_screen_fence_ref;

	pscreen->fence_signalled = fd_screen_fence_signalled;

	pscreen->fence_finish = fd_screen_fence_finish;

	util_format_s3tc_init();

	return pscreen;

fail:

	fd_screen_destroy(pscreen);

	return NULL;

}