text: /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
  
  /*
   * Copyright (C) 2014 Rob Clark <robclark@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
   * 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 <robclark@freedesktop.org>
   */
  
  #include "pipe/p_state.h"
  #include "util/u_string.h"
  #include "util/u_memory.h"
  #include "util/u_inlines.h"
  #include "util/u_format.h"
  
  #include "freedreno_draw.h"
  #include "freedreno_state.h"
  #include "freedreno_resource.h"
  
  #include "fd4_gmem.h"
  #include "fd4_context.h"
  #include "fd4_draw.h"
  #include "fd4_emit.h"
  #include "fd4_program.h"
  #include "fd4_format.h"
  #include "fd4_zsa.h"
  
  static void
  emit_mrt(struct fd_ringbuffer *ring, unsigned nr_bufs,
  		struct pipe_surface **bufs, uint32_t *bases,
  		uint32_t bin_w, bool decode_srgb)
  {
  	enum a4xx_tile_mode tile_mode;
  	unsigned i;
  
  	if (bin_w) {
  		tile_mode = 2;
  	} else {
  		tile_mode = TILE4_LINEAR;
  	}
  
  	for (i = 0; i < A4XX_MAX_RENDER_TARGETS; i++) {
  		enum a4xx_color_fmt format = 0;
  		enum a3xx_color_swap swap = WZYX;
  		bool srgb = false;
  		struct fd_resource *rsc = NULL;
  		struct fd_resource_slice *slice = NULL;
  		uint32_t stride = 0;
  		uint32_t base = 0;
  		uint32_t offset = 0;
  
  		if ((i < nr_bufs) && bufs[i]) {
  			struct pipe_surface *psurf = bufs[i];
  			enum pipe_format pformat = psurf->format;
  
  			rsc = fd_resource(psurf->texture);
  
  			/* In case we're drawing to Z32F_S8, the "color" actually goes to
  			 * the stencil
  			 */
  			if (rsc->stencil) {
  				rsc = rsc->stencil;
  				pformat = rsc->base.format;
  				if (bases)
  					bases++;
  			}
  
  			slice = fd_resource_slice(rsc, psurf->u.tex.level);
  			format = fd4_pipe2color(pformat);
  			swap = fd4_pipe2swap(pformat);
  
  			if (decode_srgb)
  				srgb = util_format_is_srgb(pformat);
  			else
  				pformat = util_format_linear(pformat);
  
  			debug_assert(psurf->u.tex.first_layer == psurf->u.tex.last_layer);
  
  			offset = fd_resource_offset(rsc, psurf->u.tex.level,
  					psurf->u.tex.first_layer);
  
  			if (bin_w) {
  				stride = bin_w * rsc->cpp;
  
  				if (bases) {
  					base = bases[i];
  				}
  			} else {
  				stride = slice->pitch * rsc->cpp;
  			}
  		} else if ((i < nr_bufs) && bases) {
  			base = bases[i];
  		}
  
  		OUT_PKT0(ring, REG_A4XX_RB_MRT_BUF_INFO(i), 3);
  		OUT_RING(ring, A4XX_RB_MRT_BUF_INFO_COLOR_FORMAT(format) |
  				A4XX_RB_MRT_BUF_INFO_COLOR_TILE_MODE(tile_mode) |
  				A4XX_RB_MRT_BUF_INFO_COLOR_BUF_PITCH(stride) |
  				A4XX_RB_MRT_BUF_INFO_COLOR_SWAP(swap) |
  				COND(srgb, A4XX_RB_MRT_BUF_INFO_COLOR_SRGB));
  		if (bin_w || (i >= nr_bufs) || !bufs[i]) {
  			OUT_RING(ring, base);
  			OUT_RING(ring, A4XX_RB_MRT_CONTROL3_STRIDE(stride));
  		} else {
  			OUT_RELOCW(ring, rsc->bo, offset, 0, 0);
  			/* RB_MRT[i].CONTROL3.STRIDE not emitted by c2d..
  			 * not sure if we need to skip it for bypass or
  			 * not.
  			 */
  			OUT_RING(ring, A4XX_RB_MRT_CONTROL3_STRIDE(0));
  		}
  	}
  }
  
  static bool
  use_hw_binning(struct fd_batch *batch)
  {
  	struct fd_gmem_stateobj *gmem = &batch->ctx->gmem;
  
  	if ((gmem->maxpw * gmem->maxph) > 32)
  		return false;
  
  	if ((gmem->maxpw > 15) || (gmem->maxph > 15))
  		return false;
  
  	return fd_binning_enabled && ((gmem->nbins_x * gmem->nbins_y) > 2);
  }
  
  /* transfer from gmem to system memory (ie. normal RAM) */
  
  static void
  emit_gmem2mem_surf(struct fd_batch *batch, bool stencil,
  		uint32_t base, struct pipe_surface *psurf)
  {
  	struct fd_ringbuffer *ring = batch->gmem;
  	struct fd_resource *rsc = fd_resource(psurf->texture);
  	enum pipe_format pformat = psurf->format;
  	struct fd_resource_slice *slice;
  	uint32_t offset;
  
  	if (stencil) {
  		debug_assert(rsc->stencil);
  		rsc = rsc->stencil;
  		pformat = rsc->base.format;
  	}
  
  	slice = &rsc->slices[psurf->u.tex.level];
  	offset = fd_resource_offset(rsc, psurf->u.tex.level,
  			psurf->u.tex.first_layer);
  
  	debug_assert(psurf->u.tex.first_layer == psurf->u.tex.last_layer);
  
  	OUT_PKT0(ring, REG_A4XX_RB_COPY_CONTROL, 4);
  	OUT_RING(ring, A4XX_RB_COPY_CONTROL_MSAA_RESOLVE(MSAA_ONE) |
  			A4XX_RB_COPY_CONTROL_MODE(RB_COPY_RESOLVE) |
  			A4XX_RB_COPY_CONTROL_GMEM_BASE(base));
  	OUT_RELOCW(ring, rsc->bo, offset, 0, 0);   /* RB_COPY_DEST_BASE */
  	OUT_RING(ring, A4XX_RB_COPY_DEST_PITCH_PITCH(slice->pitch * rsc->cpp));
  	OUT_RING(ring, A4XX_RB_COPY_DEST_INFO_TILE(TILE4_LINEAR) |
  			A4XX_RB_COPY_DEST_INFO_FORMAT(fd4_pipe2color(pformat)) |
  			A4XX_RB_COPY_DEST_INFO_COMPONENT_ENABLE(0xf) |
  			A4XX_RB_COPY_DEST_INFO_ENDIAN(ENDIAN_NONE) |
  			A4XX_RB_COPY_DEST_INFO_SWAP(fd4_pipe2swap(pformat)));
  
  	fd4_draw(batch, ring, DI_PT_RECTLIST, IGNORE_VISIBILITY,
  			DI_SRC_SEL_AUTO_INDEX, 2, 1, INDEX_SIZE_IGN, 0, 0, NULL);
  }
  
  static void
  fd4_emit_tile_gmem2mem(struct fd_batch *batch, struct fd_tile *tile)
  {
  	struct fd_context *ctx = batch->ctx;
  	struct fd_gmem_stateobj *gmem = &ctx->gmem;
  	struct fd_ringbuffer *ring = batch->gmem;
  	struct pipe_framebuffer_state *pfb = &batch->framebuffer;
  	struct fd4_emit emit = {
  			.debug = &ctx->debug,
  			.vtx = &ctx->solid_vbuf_state,
  			.prog = &ctx->solid_prog,
  			.key = {
  				.half_precision = true,
  			},
  	};
  
  	OUT_PKT0(ring, REG_A4XX_RB_DEPTH_CONTROL, 1);
  	OUT_RING(ring, A4XX_RB_DEPTH_CONTROL_ZFUNC(FUNC_NEVER));
  
  	OUT_PKT0(ring, REG_A4XX_RB_STENCIL_CONTROL, 2);
  	OUT_RING(ring, A4XX_RB_STENCIL_CONTROL_FUNC(FUNC_NEVER) |
  			A4XX_RB_STENCIL_CONTROL_FAIL(STENCIL_KEEP) |
  			A4XX_RB_STENCIL_CONTROL_ZPASS(STENCIL_KEEP) |
  			A4XX_RB_STENCIL_CONTROL_ZFAIL(STENCIL_KEEP) |
  			A4XX_RB_STENCIL_CONTROL_FUNC_BF(FUNC_NEVER) |
  			A4XX_RB_STENCIL_CONTROL_FAIL_BF(STENCIL_KEEP) |
  			A4XX_RB_STENCIL_CONTROL_ZPASS_BF(STENCIL_KEEP) |
  			A4XX_RB_STENCIL_CONTROL_ZFAIL_BF(STENCIL_KEEP));
  	OUT_RING(ring, 0x00000000); /* RB_STENCIL_CONTROL2 */
  
  	OUT_PKT0(ring, REG_A4XX_RB_STENCILREFMASK, 2);
  	OUT_RING(ring, 0xff000000 |
  			A4XX_RB_STENCILREFMASK_STENCILREF(0) |
  			A4XX_RB_STENCILREFMASK_STENCILMASK(0) |
  			A4XX_RB_STENCILREFMASK_STENCILWRITEMASK(0xff));
  	OUT_RING(ring, 0xff000000 |
  			A4XX_RB_STENCILREFMASK_BF_STENCILREF(0) |
  			A4XX_RB_STENCILREFMASK_BF_STENCILMASK(0) |
  			A4XX_RB_STENCILREFMASK_BF_STENCILWRITEMASK(0xff));
  
  	OUT_PKT0(ring, REG_A4XX_GRAS_SU_MODE_CONTROL, 1);
  	OUT_RING(ring, A4XX_GRAS_SU_MODE_CONTROL_LINEHALFWIDTH(0));
  
  	fd_wfi(batch, ring);
  
  	OUT_PKT0(ring, REG_A4XX_GRAS_CL_CLIP_CNTL, 1);
  	OUT_RING(ring, 0x80000);      /* GRAS_CL_CLIP_CNTL */
  
  	OUT_PKT0(ring, REG_A4XX_GRAS_CL_VPORT_XOFFSET_0, 6);
  	OUT_RING(ring, A4XX_GRAS_CL_VPORT_XOFFSET_0((float)pfb->width/2.0));
  	OUT_RING(ring, A4XX_GRAS_CL_VPORT_XSCALE_0((float)pfb->width/2.0));
  	OUT_RING(ring, A4XX_GRAS_CL_VPORT_YOFFSET_0((float)pfb->height/2.0));
  	OUT_RING(ring, A4XX_GRAS_CL_VPORT_YSCALE_0(-(float)pfb->height/2.0));
  	OUT_RING(ring, A4XX_GRAS_CL_VPORT_ZOFFSET_0(0.0));
  	OUT_RING(ring, A4XX_GRAS_CL_VPORT_ZSCALE_0(1.0));
  
  	OUT_PKT0(ring, REG_A4XX_RB_RENDER_CONTROL, 1);
  	OUT_RING(ring, A4XX_RB_RENDER_CONTROL_DISABLE_COLOR_PIPE |
  			0xa);       /* XXX */
  
  	OUT_PKT0(ring, REG_A4XX_GRAS_SC_CONTROL, 1);
  	OUT_RING(ring, A4XX_GRAS_SC_CONTROL_RENDER_MODE(RB_RESOLVE_PASS) |
  			A4XX_GRAS_SC_CONTROL_MSAA_DISABLE |
  			A4XX_GRAS_SC_CONTROL_MSAA_SAMPLES(MSAA_ONE) |
  			A4XX_GRAS_SC_CONTROL_RASTER_MODE(1));
  
  	OUT_PKT0(ring, REG_A4XX_PC_PRIM_VTX_CNTL, 1);
  	OUT_RING(ring, A4XX_PC_PRIM_VTX_CNTL_PROVOKING_VTX_LAST);
  
  	OUT_PKT0(ring, REG_A4XX_GRAS_ALPHA_CONTROL, 1);
  	OUT_RING(ring, 0x00000002);
  
  	OUT_PKT0(ring, REG_A4XX_GRAS_SC_WINDOW_SCISSOR_BR, 2);
  	OUT_RING(ring, A4XX_GRAS_SC_WINDOW_SCISSOR_BR_X(pfb->width - 1) |
  			A4XX_GRAS_SC_WINDOW_SCISSOR_BR_Y(pfb->height - 1));
  	OUT_RING(ring, A4XX_GRAS_SC_WINDOW_SCISSOR_TL_X(0) |
  			A4XX_GRAS_SC_WINDOW_SCISSOR_TL_Y(0));
  
  	OUT_PKT0(ring, REG_A4XX_VFD_INDEX_OFFSET, 2);
  	OUT_RING(ring, 0);            /* VFD_INDEX_OFFSET */
  	OUT_RING(ring, 0);            /* ??? UNKNOWN_2209 */
  
  	fd4_program_emit(ring, &emit, 0, NULL);
  	fd4_emit_vertex_bufs(ring, &emit);
  
  	if (batch->resolve & (FD_BUFFER_DEPTH | FD_BUFFER_STENCIL)) {
  		struct fd_resource *rsc = fd_resource(pfb->zsbuf->texture);
  		if (!rsc->stencil || (batch->resolve & FD_BUFFER_DEPTH))
  			emit_gmem2mem_surf(batch, false, ctx->gmem.zsbuf_base[0], pfb->zsbuf);
  		if (rsc->stencil && (batch->resolve & FD_BUFFER_STENCIL))
  			emit_gmem2mem_surf(batch, true, ctx->gmem.zsbuf_base[1], pfb->zsbuf);
  	}
  
  	if (batch->resolve & FD_BUFFER_COLOR) {
  		unsigned i;
  		for (i = 0; i < pfb->nr_cbufs; i++) {
  			if (!pfb->cbufs[i])
  				continue;
  			if (!(batch->resolve & (PIPE_CLEAR_COLOR0 << i)))
  				continue;
  			emit_gmem2mem_surf(batch, false, gmem->cbuf_base[i], pfb->cbufs[i]);
  		}
  	}
  
  	OUT_PKT0(ring, REG_A4XX_GRAS_SC_CONTROL, 1);
  	OUT_RING(ring, A4XX_GRAS_SC_CONTROL_RENDER_MODE(RB_RENDERING_PASS) |
  			A4XX_GRAS_SC_CONTROL_MSAA_DISABLE |
  			A4XX_GRAS_SC_CONTROL_MSAA_SAMPLES(MSAA_ONE) |
  			A4XX_GRAS_SC_CONTROL_RASTER_MODE(0));
  }
  
  /* transfer from system memory to gmem */
  
  static void
  emit_mem2gmem_surf(struct fd_batch *batch, uint32_t *bases,
  		struct pipe_surface **bufs, uint32_t nr_bufs, uint32_t bin_w)
  {
  	struct fd_ringbuffer *ring = batch->gmem;
  	struct pipe_surface *zsbufs[2];
  
  	emit_mrt(ring, nr_bufs, bufs, bases, bin_w, false);
  
  	if (bufs[0] && (bufs[0]->format == PIPE_FORMAT_Z32_FLOAT_S8X24_UINT)) {
  		/* The gmem_restore_tex logic will put the first buffer's stencil
  		 * as color. Supply it with the proper information to make that
  		 * happen.
  		 */
  		zsbufs[0] = zsbufs[1] = bufs[0];
  		bufs = zsbufs;
  		nr_bufs = 2;
  	}
  
  	fd4_emit_gmem_restore_tex(ring, nr_bufs, bufs);
  
  	fd4_draw(batch, ring, DI_PT_RECTLIST, IGNORE_VISIBILITY,
  			DI_SRC_SEL_AUTO_INDEX, 2, 1, INDEX_SIZE_IGN, 0, 0, NULL);
  }
  
  static void
  fd4_emit_tile_mem2gmem(struct fd_batch *batch, struct fd_tile *tile)
  {
  	struct fd_context *ctx = batch->ctx;
  	struct fd_gmem_stateobj *gmem = &ctx->gmem;
  	struct fd_ringbuffer *ring = batch->gmem;
  	struct pipe_framebuffer_state *pfb = &batch->framebuffer;
  	struct fd4_emit emit = {
  			.debug = &ctx->debug,
  			.vtx = &ctx->blit_vbuf_state,
  			.sprite_coord_enable = 1,
  			/* NOTE: They all use the same VP, this is for vtx bufs. */
  			.prog = &ctx->blit_prog[0],
  			.key = {
  				.half_precision = fd_half_precision(pfb),
  			},
  			.no_decode_srgb = true,
  	};
  	unsigned char mrt_comp[A4XX_MAX_RENDER_TARGETS] = {0};
  	float x0, y0, x1, y1;
  	unsigned bin_w = tile->bin_w;
  	unsigned bin_h = tile->bin_h;
  	unsigned i;
  
  	/* write texture coordinates to vertexbuf: */
  	x0 = ((float)tile->xoff) / ((float)pfb->width);
  	x1 = ((float)tile->xoff + bin_w) / ((float)pfb->width);
  	y0 = ((float)tile->yoff) / ((float)pfb->height);
  	y1 = ((float)tile->yoff + bin_h) / ((float)pfb->height);
  
  	OUT_PKT3(ring, CP_MEM_WRITE, 5);
  	OUT_RELOCW(ring, fd_resource(ctx->blit_texcoord_vbuf)->bo, 0, 0, 0);
  	OUT_RING(ring, fui(x0));
  	OUT_RING(ring, fui(y0));
  	OUT_RING(ring, fui(x1));
  	OUT_RING(ring, fui(y1));
  
  	for (i = 0; i < A4XX_MAX_RENDER_TARGETS; i++) {
  		mrt_comp[i] = ((i < pfb->nr_cbufs) && pfb->cbufs[i]) ? 0xf : 0;
  
  		OUT_PKT0(ring, REG_A4XX_RB_MRT_CONTROL(i), 1);
  		OUT_RING(ring, A4XX_RB_MRT_CONTROL_ROP_CODE(ROP_COPY) |
  				A4XX_RB_MRT_CONTROL_COMPONENT_ENABLE(0xf));
  
  		OUT_PKT0(ring, REG_A4XX_RB_MRT_BLEND_CONTROL(i), 1);
  		OUT_RING(ring, A4XX_RB_MRT_BLEND_CONTROL_RGB_SRC_FACTOR(FACTOR_ONE) |
  				A4XX_RB_MRT_BLEND_CONTROL_RGB_BLEND_OPCODE(BLEND_DST_PLUS_SRC) |
  				A4XX_RB_MRT_BLEND_CONTROL_RGB_DEST_FACTOR(FACTOR_ZERO) |
  				A4XX_RB_MRT_BLEND_CONTROL_ALPHA_SRC_FACTOR(FACTOR_ONE) |
  				A4XX_RB_MRT_BLEND_CONTROL_ALPHA_BLEND_OPCODE(BLEND_DST_PLUS_SRC) |
  				A4XX_RB_MRT_BLEND_CONTROL_ALPHA_DEST_FACTOR(FACTOR_ZERO));
  	}
  
  	OUT_PKT0(ring, REG_A4XX_RB_RENDER_COMPONENTS, 1);
  	OUT_RING(ring, A4XX_RB_RENDER_COMPONENTS_RT0(mrt_comp[0]) |
  			A4XX_RB_RENDER_COMPONENTS_RT1(mrt_comp[1]) |
  			A4XX_RB_RENDER_COMPONENTS_RT2(mrt_comp[2]) |
  			A4XX_RB_RENDER_COMPONENTS_RT3(mrt_comp[3]) |
  			A4XX_RB_RENDER_COMPONENTS_RT4(mrt_comp[4]) |
  			A4XX_RB_RENDER_COMPONENTS_RT5(mrt_comp[5]) |
  			A4XX_RB_RENDER_COMPONENTS_RT6(mrt_comp[6]) |
  			A4XX_RB_RENDER_COMPONENTS_RT7(mrt_comp[7]));
  
  	OUT_PKT0(ring, REG_A4XX_RB_RENDER_CONTROL, 1);
  	OUT_RING(ring, 0x8);          /* XXX RB_RENDER_CONTROL */
  
  	OUT_PKT0(ring, REG_A4XX_RB_DEPTH_CONTROL, 1);
  	OUT_RING(ring, A4XX_RB_DEPTH_CONTROL_ZFUNC(FUNC_LESS));
  
  	OUT_PKT0(ring, REG_A4XX_GRAS_CL_CLIP_CNTL, 1);
  	OUT_RING(ring, 0x280000);     /* XXX GRAS_CL_CLIP_CNTL */
  
  	OUT_PKT0(ring, REG_A4XX_GRAS_SU_MODE_CONTROL, 1);
  	OUT_RING(ring, A4XX_GRAS_SU_MODE_CONTROL_LINEHALFWIDTH(0) |
  			A4XX_GRAS_SU_MODE_CONTROL_RENDERING_PASS);
  
  	OUT_PKT0(ring, REG_A4XX_GRAS_CL_VPORT_XOFFSET_0, 6);
  	OUT_RING(ring, A4XX_GRAS_CL_VPORT_XOFFSET_0((float)bin_w/2.0));
  	OUT_RING(ring, A4XX_GRAS_CL_VPORT_XSCALE_0((float)bin_w/2.0));
  	OUT_RING(ring, A4XX_GRAS_CL_VPORT_YOFFSET_0((float)bin_h/2.0));
  	OUT_RING(ring, A4XX_GRAS_CL_VPORT_YSCALE_0(-(float)bin_h/2.0));
  	OUT_RING(ring, A4XX_GRAS_CL_VPORT_ZOFFSET_0(0.0));
  	OUT_RING(ring, A4XX_GRAS_CL_VPORT_ZSCALE_0(1.0));
  
  	OUT_PKT0(ring, REG_A4XX_GRAS_SC_WINDOW_SCISSOR_BR, 2);
  	OUT_RING(ring, A4XX_GRAS_SC_WINDOW_SCISSOR_BR_X(bin_w - 1) |
  			A4XX_GRAS_SC_WINDOW_SCISSOR_BR_Y(bin_h - 1));
  	OUT_RING(ring, A4XX_GRAS_SC_WINDOW_SCISSOR_TL_X(0) |
  			A4XX_GRAS_SC_WINDOW_SCISSOR_TL_Y(0));
  
  	OUT_PKT0(ring, REG_A4XX_GRAS_SC_SCREEN_SCISSOR_TL, 2);
  	OUT_RING(ring, A4XX_GRAS_SC_SCREEN_SCISSOR_TL_X(0) |
  			A4XX_GRAS_SC_SCREEN_SCISSOR_TL_Y(0));
  	OUT_RING(ring, A4XX_GRAS_SC_SCREEN_SCISSOR_BR_X(bin_w - 1) |
  			A4XX_GRAS_SC_SCREEN_SCISSOR_BR_Y(bin_h - 1));
  
  	OUT_PKT0(ring, REG_A4XX_RB_MODE_CONTROL, 1);
  	OUT_RING(ring, A4XX_RB_MODE_CONTROL_WIDTH(gmem->bin_w) |
  			A4XX_RB_MODE_CONTROL_HEIGHT(gmem->bin_h));
  
  	OUT_PKT0(ring, REG_A4XX_RB_STENCIL_CONTROL, 2);
  	OUT_RING(ring, A4XX_RB_STENCIL_CONTROL_FUNC(FUNC_ALWAYS) |
  			A4XX_RB_STENCIL_CONTROL_FAIL(STENCIL_KEEP) |
  			A4XX_RB_STENCIL_CONTROL_ZPASS(STENCIL_KEEP) |
  			A4XX_RB_STENCIL_CONTROL_ZFAIL(STENCIL_KEEP) |
  			A4XX_RB_STENCIL_CONTROL_FUNC_BF(FUNC_ALWAYS) |
  			A4XX_RB_STENCIL_CONTROL_FAIL_BF(STENCIL_KEEP) |
  			A4XX_RB_STENCIL_CONTROL_ZPASS_BF(STENCIL_KEEP) |
  			A4XX_RB_STENCIL_CONTROL_ZFAIL_BF(STENCIL_KEEP));
  	OUT_RING(ring, 0x00000000); /* RB_STENCIL_CONTROL2 */
  
  	OUT_PKT0(ring, REG_A4XX_GRAS_SC_CONTROL, 1);
  	OUT_RING(ring, A4XX_GRAS_SC_CONTROL_RENDER_MODE(RB_RENDERING_PASS) |
  			A4XX_GRAS_SC_CONTROL_MSAA_DISABLE |
  			A4XX_GRAS_SC_CONTROL_MSAA_SAMPLES(MSAA_ONE) |
  			A4XX_GRAS_SC_CONTROL_RASTER_MODE(1));
  
  	OUT_PKT0(ring, REG_A4XX_PC_PRIM_VTX_CNTL, 1);
  	OUT_RING(ring, A4XX_PC_PRIM_VTX_CNTL_PROVOKING_VTX_LAST |
  			A4XX_PC_PRIM_VTX_CNTL_VAROUT(1));
  
  	OUT_PKT0(ring, REG_A4XX_VFD_INDEX_OFFSET, 2);
  	OUT_RING(ring, 0);            /* VFD_INDEX_OFFSET */
  	OUT_RING(ring, 0);            /* ??? UNKNOWN_2209 */
  
  	fd4_emit_vertex_bufs(ring, &emit);
  
  	/* for gmem pitch/base calculations, we need to use the non-
  	 * truncated tile sizes:
  	 */
  	bin_w = gmem->bin_w;
  	bin_h = gmem->bin_h;
  
  	if (fd_gmem_needs_restore(batch, tile, FD_BUFFER_COLOR)) {
  		emit.prog = &ctx->blit_prog[pfb->nr_cbufs - 1];
  		emit.fp = NULL;      /* frag shader changed so clear cache */
  		fd4_program_emit(ring, &emit, pfb->nr_cbufs, pfb->cbufs);
  		emit_mem2gmem_surf(batch, gmem->cbuf_base, pfb->cbufs, pfb->nr_cbufs, bin_w);
  	}
  
  	if (fd_gmem_needs_restore(batch, tile, FD_BUFFER_DEPTH | FD_BUFFER_STENCIL)) {
  		switch (pfb->zsbuf->format) {
  		case PIPE_FORMAT_Z32_FLOAT_S8X24_UINT:
  		case PIPE_FORMAT_Z32_FLOAT:
  			emit.prog = (pfb->zsbuf->format == PIPE_FORMAT_Z32_FLOAT) ?
  					&ctx->blit_z : &ctx->blit_zs;
  			emit.key.half_precision = false;
  
  			OUT_PKT0(ring, REG_A4XX_RB_DEPTH_CONTROL, 1);
  			OUT_RING(ring, A4XX_RB_DEPTH_CONTROL_Z_ENABLE |
  					A4XX_RB_DEPTH_CONTROL_Z_WRITE_ENABLE |
  					A4XX_RB_DEPTH_CONTROL_ZFUNC(FUNC_ALWAYS) |
  					A4XX_RB_DEPTH_CONTROL_EARLY_Z_DISABLE);
  
  			OUT_PKT0(ring, REG_A4XX_GRAS_ALPHA_CONTROL, 1);
  			OUT_RING(ring, A4XX_GRAS_ALPHA_CONTROL_ALPHA_TEST_ENABLE);
  
  			OUT_PKT0(ring, REG_A4XX_GRAS_CL_CLIP_CNTL, 1);
  			OUT_RING(ring, 0x80000);   /* GRAS_CL_CLIP_CNTL */
  
  			break;
  		default:
  			/* Non-float can use a regular color write. It's split over 8-bit
  			 * components, so half precision is always sufficient.
  			 */
  			emit.prog = &ctx->blit_prog[0];
  			emit.key.half_precision = true;
  			break;
  		}
  		emit.fp = NULL;      /* frag shader changed so clear cache */
  		fd4_program_emit(ring, &emit, 1, &pfb->zsbuf);
  		emit_mem2gmem_surf(batch, gmem->zsbuf_base, &pfb->zsbuf, 1, bin_w);
  	}
  
  	OUT_PKT0(ring, REG_A4XX_GRAS_SC_CONTROL, 1);
  	OUT_RING(ring, A4XX_GRAS_SC_CONTROL_RENDER_MODE(RB_RENDERING_PASS) |
  			A4XX_GRAS_SC_CONTROL_MSAA_SAMPLES(MSAA_ONE) |
  			A4XX_GRAS_SC_CONTROL_RASTER_MODE(0));
  
  	OUT_PKT0(ring, REG_A4XX_RB_MODE_CONTROL, 1);
  	OUT_RING(ring, A4XX_RB_MODE_CONTROL_WIDTH(gmem->bin_w) |
  			A4XX_RB_MODE_CONTROL_HEIGHT(gmem->bin_h) |
  			0x00010000);  /* XXX */
  }
  
  static void
  patch_draws(struct fd_batch *batch, enum pc_di_vis_cull_mode vismode)
  {
  	unsigned i;
  	for (i = 0; i < fd_patch_num_elements(&batch->draw_patches); i++) {
  		struct fd_cs_patch *patch = fd_patch_element(&batch->draw_patches, i);
  		*patch->cs = patch->val | DRAW4(0, 0, 0, vismode);
  	}
  	util_dynarray_resize(&batch->draw_patches, 0);
  }
  
  /* for rendering directly to system memory: */
  static void
  fd4_emit_sysmem_prep(struct fd_batch *batch)
  {
  	struct pipe_framebuffer_state *pfb = &batch->framebuffer;
  	struct fd_ringbuffer *ring = batch->gmem;
  
  	fd4_emit_restore(batch, ring);
  
  	OUT_PKT0(ring, REG_A4XX_RB_FRAME_BUFFER_DIMENSION, 1);
  	OUT_RING(ring, A4XX_RB_FRAME_BUFFER_DIMENSION_WIDTH(pfb->width) |
  			A4XX_RB_FRAME_BUFFER_DIMENSION_HEIGHT(pfb->height));
  
  	emit_mrt(ring, pfb->nr_cbufs, pfb->cbufs, NULL, 0, true);
  
  	/* setup scissor/offset for current tile: */
  	OUT_PKT0(ring, REG_A4XX_RB_BIN_OFFSET, 1);
  	OUT_RING(ring, A4XX_RB_BIN_OFFSET_X(0) |
  			A4XX_RB_BIN_OFFSET_Y(0));
  
  	OUT_PKT0(ring, REG_A4XX_GRAS_SC_SCREEN_SCISSOR_TL, 2);
  	OUT_RING(ring, A4XX_GRAS_SC_SCREEN_SCISSOR_TL_X(0) |
  			A4XX_GRAS_SC_SCREEN_SCISSOR_TL_Y(0));
  	OUT_RING(ring, A4XX_GRAS_SC_SCREEN_SCISSOR_BR_X(pfb->width - 1) |
  			A4XX_GRAS_SC_SCREEN_SCISSOR_BR_Y(pfb->height - 1));
  
  	OUT_PKT0(ring, REG_A4XX_RB_MODE_CONTROL, 1);
  	OUT_RING(ring, A4XX_RB_MODE_CONTROL_WIDTH(0) |
  			A4XX_RB_MODE_CONTROL_HEIGHT(0) |
  			0x00c00000);  /* XXX */
  
  	OUT_PKT0(ring, REG_A4XX_RB_RENDER_CONTROL, 1);
  	OUT_RING(ring, 0x8);
  
  	patch_draws(batch, IGNORE_VISIBILITY);
  }
  
  static void
  update_vsc_pipe(struct fd_batch *batch)
  {
  	struct fd_context *ctx = batch->ctx;
  	struct fd4_context *fd4_ctx = fd4_context(ctx);
  	struct fd_ringbuffer *ring = batch->gmem;
  	int i;
  
  	OUT_PKT0(ring, REG_A4XX_VSC_SIZE_ADDRESS, 1);
  	OUT_RELOCW(ring, fd4_ctx->vsc_size_mem, 0, 0, 0); /* VSC_SIZE_ADDRESS */
  
  	OUT_PKT0(ring, REG_A4XX_VSC_PIPE_CONFIG_REG(0), 8);
  	for (i = 0; i < 8; i++) {
  		struct fd_vsc_pipe *pipe = &ctx->vsc_pipe[i];
  		OUT_RING(ring, A4XX_VSC_PIPE_CONFIG_REG_X(pipe->x) |
  				A4XX_VSC_PIPE_CONFIG_REG_Y(pipe->y) |
  				A4XX_VSC_PIPE_CONFIG_REG_W(pipe->w) |
  				A4XX_VSC_PIPE_CONFIG_REG_H(pipe->h));
  	}
  
  	OUT_PKT0(ring, REG_A4XX_VSC_PIPE_DATA_ADDRESS_REG(0), 8);
  	for (i = 0; i < 8; i++) {
  		struct fd_vsc_pipe *pipe = &ctx->vsc_pipe[i];
  		if (!pipe->bo) {
  			pipe->bo = fd_bo_new(ctx->dev, 0x40000,
  					DRM_FREEDRENO_GEM_TYPE_KMEM);
  		}
  		OUT_RELOCW(ring, pipe->bo, 0, 0, 0);       /* VSC_PIPE_DATA_ADDRESS[i] */
  	}
  
  	OUT_PKT0(ring, REG_A4XX_VSC_PIPE_DATA_LENGTH_REG(0), 8);
  	for (i = 0; i < 8; i++) {
  		struct fd_vsc_pipe *pipe = &ctx->vsc_pipe[i];
  		OUT_RING(ring, fd_bo_size(pipe->bo) - 32); /* VSC_PIPE_DATA_LENGTH[i] */
  	}
  }
  
  static void
  emit_binning_pass(struct fd_batch *batch)
  {
  	struct fd_context *ctx = batch->ctx;
  	struct fd_gmem_stateobj *gmem = &ctx->gmem;
  	struct pipe_framebuffer_state *pfb = &batch->framebuffer;
  	struct fd_ringbuffer *ring = batch->gmem;
  	int i;
  
  	uint32_t x1 = gmem->minx;
  	uint32_t y1 = gmem->miny;
  	uint32_t x2 = gmem->minx + gmem->width - 1;
  	uint32_t y2 = gmem->miny + gmem->height - 1;
  
  	OUT_PKT0(ring, REG_A4XX_PC_BINNING_COMMAND, 1);
  	OUT_RING(ring, A4XX_PC_BINNING_COMMAND_BINNING_ENABLE);
  
  	OUT_PKT0(ring, REG_A4XX_GRAS_SC_CONTROL, 1);
  	OUT_RING(ring, A4XX_GRAS_SC_CONTROL_RENDER_MODE(RB_TILING_PASS) |
  			A4XX_GRAS_SC_CONTROL_MSAA_DISABLE |
  			A4XX_GRAS_SC_CONTROL_MSAA_SAMPLES(MSAA_ONE) |
  			A4XX_GRAS_SC_CONTROL_RASTER_MODE(0));
  
  	OUT_PKT0(ring, REG_A4XX_RB_FRAME_BUFFER_DIMENSION, 1);
  	OUT_RING(ring, A4XX_RB_FRAME_BUFFER_DIMENSION_WIDTH(pfb->width) |
  			A4XX_RB_FRAME_BUFFER_DIMENSION_HEIGHT(pfb->height));
  
  	/* setup scissor/offset for whole screen: */
  	OUT_PKT0(ring, REG_A4XX_RB_BIN_OFFSET, 1);
  	OUT_RING(ring, A4XX_RB_BIN_OFFSET_X(x1) |
  			A4XX_RB_BIN_OFFSET_Y(y1));
  
  	OUT_PKT0(ring, REG_A4XX_GRAS_SC_SCREEN_SCISSOR_TL, 2);
  	OUT_RING(ring, A4XX_GRAS_SC_SCREEN_SCISSOR_TL_X(x1) |
  			A4XX_GRAS_SC_SCREEN_SCISSOR_TL_Y(y1));
  	OUT_RING(ring, A4XX_GRAS_SC_SCREEN_SCISSOR_BR_X(x2) |
  			A4XX_GRAS_SC_SCREEN_SCISSOR_BR_Y(y2));
  
  	for (i = 0; i < A4XX_MAX_RENDER_TARGETS; i++) {
  		OUT_PKT0(ring, REG_A4XX_RB_MRT_CONTROL(i), 1);
  		OUT_RING(ring, A4XX_RB_MRT_CONTROL_ROP_CODE(ROP_CLEAR) |
  				A4XX_RB_MRT_CONTROL_COMPONENT_ENABLE(0xf));
  	}
  
  	/* emit IB to binning drawcmds: */
  	ctx->emit_ib(ring, batch->binning);
  
  	fd_reset_wfi(batch);
  	fd_wfi(batch, ring);
  
  	/* and then put stuff back the way it was: */
  
  	OUT_PKT0(ring, REG_A4XX_PC_BINNING_COMMAND, 1);
  	OUT_RING(ring, 0x00000000);
  
  	OUT_PKT0(ring, REG_A4XX_GRAS_SC_CONTROL, 1);
  	OUT_RING(ring, A4XX_GRAS_SC_CONTROL_RENDER_MODE(RB_RENDERING_PASS) |
  			A4XX_GRAS_SC_CONTROL_MSAA_DISABLE |
  			A4XX_GRAS_SC_CONTROL_MSAA_SAMPLES(MSAA_ONE) |
  			A4XX_GRAS_SC_CONTROL_RASTER_MODE(0));
  
  	fd_event_write(batch, ring, CACHE_FLUSH);
  	fd_wfi(batch, ring);
  }
  
  /* before first tile */
  static void
  fd4_emit_tile_init(struct fd_batch *batch)
  {
  	struct fd_ringbuffer *ring = batch->gmem;
  	struct pipe_framebuffer_state *pfb = &batch->framebuffer;
  	struct fd_gmem_stateobj *gmem = &batch->ctx->gmem;
  
  	fd4_emit_restore(batch, ring);
  
  	OUT_PKT0(ring, REG_A4XX_VSC_BIN_SIZE, 1);
  	OUT_RING(ring, A4XX_VSC_BIN_SIZE_WIDTH(gmem->bin_w) |
  			A4XX_VSC_BIN_SIZE_HEIGHT(gmem->bin_h));
  
  	update_vsc_pipe(batch);
  
  	fd_wfi(batch, ring);
  	OUT_PKT0(ring, REG_A4XX_RB_FRAME_BUFFER_DIMENSION, 1);
  	OUT_RING(ring, A4XX_RB_FRAME_BUFFER_DIMENSION_WIDTH(pfb->width) |
  			A4XX_RB_FRAME_BUFFER_DIMENSION_HEIGHT(pfb->height));
  
  	if (use_hw_binning(batch)) {
  		OUT_PKT0(ring, REG_A4XX_RB_MODE_CONTROL, 1);
  		OUT_RING(ring, A4XX_RB_MODE_CONTROL_WIDTH(gmem->bin_w) |
  				A4XX_RB_MODE_CONTROL_HEIGHT(gmem->bin_h));
  
  		OUT_PKT0(ring, REG_A4XX_RB_RENDER_CONTROL, 1);
  		OUT_RING(ring, A4XX_RB_RENDER_CONTROL_BINNING_PASS |
  				A4XX_RB_RENDER_CONTROL_DISABLE_COLOR_PIPE |
  				0x8);
  
  		/* emit hw binning pass: */
  		emit_binning_pass(batch);
  
  		patch_draws(batch, USE_VISIBILITY);
  	} else {
  		patch_draws(batch, IGNORE_VISIBILITY);
  	}
  
  	OUT_PKT0(ring, REG_A4XX_RB_MODE_CONTROL, 1);
  	OUT_RING(ring, A4XX_RB_MODE_CONTROL_WIDTH(gmem->bin_w) |
  			A4XX_RB_MODE_CONTROL_HEIGHT(gmem->bin_h) |
  			A4XX_RB_MODE_CONTROL_ENABLE_GMEM);
  }
  
  /* before mem2gmem */
  static void
  fd4_emit_tile_prep(struct fd_batch *batch, struct fd_tile *tile)
  {
  	struct fd_context *ctx = batch->ctx;
  	struct fd_ringbuffer *ring = batch->gmem;
  	struct pipe_framebuffer_state *pfb = &batch->framebuffer;
  	struct fd_gmem_stateobj *gmem = &ctx->gmem;
  
  	if (pfb->zsbuf) {
  		struct fd_resource *rsc = fd_resource(pfb->zsbuf->texture);
  		uint32_t cpp = rsc->cpp;
  
  		OUT_PKT0(ring, REG_A4XX_RB_DEPTH_INFO, 3);
  		OUT_RING(ring, A4XX_RB_DEPTH_INFO_DEPTH_BASE(gmem->zsbuf_base[0]) |
  				A4XX_RB_DEPTH_INFO_DEPTH_FORMAT(fd4_pipe2depth(pfb->zsbuf->format)));
  		OUT_RING(ring, A4XX_RB_DEPTH_PITCH(cpp * gmem->bin_w));
  		OUT_RING(ring, A4XX_RB_DEPTH_PITCH2(cpp * gmem->bin_w));
  
  		OUT_PKT0(ring, REG_A4XX_RB_STENCIL_INFO, 2);
  		if (rsc->stencil) {
  			OUT_RING(ring, A4XX_RB_STENCIL_INFO_SEPARATE_STENCIL |
  					A4XX_RB_STENCIL_INFO_STENCIL_BASE(gmem->zsbuf_base[1]));
  			OUT_RING(ring, A4XX_RB_STENCIL_PITCH(rsc->stencil->cpp * gmem->bin_w));
  		} else {
  			OUT_RING(ring, 0x00000000);
  			OUT_RING(ring, 0x00000000);
  		}
  	} else {
  		OUT_PKT0(ring, REG_A4XX_RB_DEPTH_INFO, 3);
  		OUT_RING(ring, 0x00000000);
  		OUT_RING(ring, 0x00000000);
  		OUT_RING(ring, 0x00000000);
  
  		OUT_PKT0(ring, REG_A4XX_RB_STENCIL_INFO, 2);
  		OUT_RING(ring, 0);            /* RB_STENCIL_INFO */
  		OUT_RING(ring, 0);            /* RB_STENCIL_PITCH */
  	}
  
  	OUT_PKT0(ring, REG_A4XX_GRAS_DEPTH_CONTROL, 1);
  	if (pfb->zsbuf) {
  		OUT_RING(ring, A4XX_GRAS_DEPTH_CONTROL_FORMAT(
  				fd4_pipe2depth(pfb->zsbuf->format)));
  	} else {
  		OUT_RING(ring, A4XX_GRAS_DEPTH_CONTROL_FORMAT(DEPTH4_NONE));
  	}
  }
  
  /* before IB to rendering cmds: */
  static void
  fd4_emit_tile_renderprep(struct fd_batch *batch, struct fd_tile *tile)
  {
  	struct fd_context *ctx = batch->ctx;
  	struct fd4_context *fd4_ctx = fd4_context(ctx);
  	struct fd_ringbuffer *ring = batch->gmem;
  	struct fd_gmem_stateobj *gmem = &ctx->gmem;
  	struct pipe_framebuffer_state *pfb = &batch->framebuffer;
  
  	uint32_t x1 = tile->xoff;
  	uint32_t y1 = tile->yoff;
  	uint32_t x2 = tile->xoff + tile->bin_w - 1;
  	uint32_t y2 = tile->yoff + tile->bin_h - 1;
  
  	if (use_hw_binning(batch)) {
  		struct fd_vsc_pipe *pipe = &ctx->vsc_pipe[tile->p];
  
  		assert(pipe->w * pipe->h);
  
  		fd_event_write(batch, ring, HLSQ_FLUSH);
  		fd_wfi(batch, ring);
  
  		OUT_PKT0(ring, REG_A4XX_PC_VSTREAM_CONTROL, 1);
  		OUT_RING(ring, A4XX_PC_VSTREAM_CONTROL_SIZE(pipe->w * pipe->h) |
  				A4XX_PC_VSTREAM_CONTROL_N(tile->n));
  
  		OUT_PKT3(ring, CP_SET_BIN_DATA, 2);
  		OUT_RELOCW(ring, pipe->bo, 0, 0, 0);    /* BIN_DATA_ADDR <- VSC_PIPE[p].DATA_ADDRESS */
  		OUT_RELOCW(ring, fd4_ctx->vsc_size_mem, /* BIN_SIZE_ADDR <- VSC_SIZE_ADDRESS + (p * 4) */
  				(tile->p * 4), 0, 0);
  	} else {
  		OUT_PKT0(ring, REG_A4XX_PC_VSTREAM_CONTROL, 1);
  		OUT_RING(ring, 0x00000000);
  	}
  
  	OUT_PKT3(ring, CP_SET_BIN, 3);
  	OUT_RING(ring, 0x00000000);
  	OUT_RING(ring, CP_SET_BIN_1_X1(x1) | CP_SET_BIN_1_Y1(y1));
  	OUT_RING(ring, CP_SET_BIN_2_X2(x2) | CP_SET_BIN_2_Y2(y2));
  
  	emit_mrt(ring, pfb->nr_cbufs, pfb->cbufs, gmem->cbuf_base, gmem->bin_w, true);
  
  	/* setup scissor/offset for current tile: */
  	OUT_PKT0(ring, REG_A4XX_RB_BIN_OFFSET, 1);
  	OUT_RING(ring, A4XX_RB_BIN_OFFSET_X(tile->xoff) |
  			A4XX_RB_BIN_OFFSET_Y(tile->yoff));
  
  	OUT_PKT0(ring, REG_A4XX_GRAS_SC_SCREEN_SCISSOR_TL, 2);
  	OUT_RING(ring, A4XX_GRAS_SC_SCREEN_SCISSOR_TL_X(x1) |
  			A4XX_GRAS_SC_SCREEN_SCISSOR_TL_Y(y1));
  	OUT_RING(ring, A4XX_GRAS_SC_SCREEN_SCISSOR_BR_X(x2) |
  			A4XX_GRAS_SC_SCREEN_SCISSOR_BR_Y(y2));
  
  	OUT_PKT0(ring, REG_A4XX_RB_RENDER_CONTROL, 1);
  	OUT_RING(ring, 0x8);
  }
  
  void
  fd4_gmem_init(struct pipe_context *pctx)
  {
  	struct fd_context *ctx = fd_context(pctx);
  
  	ctx->emit_sysmem_prep = fd4_emit_sysmem_prep;
  	ctx->emit_tile_init = fd4_emit_tile_init;
  	ctx->emit_tile_prep = fd4_emit_tile_prep;
  	ctx->emit_tile_mem2gmem = fd4_emit_tile_mem2gmem;
  	ctx->emit_tile_renderprep = fd4_emit_tile_renderprep;
  	ctx->emit_tile_gmem2mem = fd4_emit_tile_gmem2mem;
  }
  