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      1 /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
      2 
      3 /*
      4  * Copyright (C) 2014 Rob Clark <robclark (at) freedesktop.org>
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the "Software"),
      8  * to deal in the Software without restriction, including without limitation
      9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     10  * and/or sell copies of the Software, and to permit persons to whom the
     11  * Software is furnished to do so, subject to the following conditions:
     12  *
     13  * The above copyright notice and this permission notice (including the next
     14  * paragraph) shall be included in all copies or substantial portions of the
     15  * Software.
     16  *
     17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
     23  * SOFTWARE.
     24  *
     25  * Authors:
     26  *    Rob Clark <robclark (at) freedesktop.org>
     27  */
     28 
     29 #ifndef FD4_DRAW_H_
     30 #define FD4_DRAW_H_
     31 
     32 #include "pipe/p_context.h"
     33 
     34 #include "freedreno_draw.h"
     35 
     36 void fd4_draw_init(struct pipe_context *pctx);
     37 
     38 /* draw packet changed on a4xx, so cannot reuse one from a2xx/a3xx.. */
     39 
     40 static inline uint32_t DRAW4(enum pc_di_primtype prim_type,
     41 		enum pc_di_src_sel source_select, enum a4xx_index_size index_size,
     42 		enum pc_di_vis_cull_mode vis_cull_mode)
     43 {
     44 	return CP_DRAW_INDX_OFFSET_0_PRIM_TYPE(prim_type) |
     45 			CP_DRAW_INDX_OFFSET_0_SOURCE_SELECT(source_select) |
     46 			CP_DRAW_INDX_OFFSET_0_INDEX_SIZE(index_size) |
     47 			CP_DRAW_INDX_OFFSET_0_VIS_CULL(vis_cull_mode);
     48 }
     49 
     50 static inline void
     51 fd4_draw(struct fd_batch *batch, struct fd_ringbuffer *ring,
     52 		enum pc_di_primtype primtype,
     53 		enum pc_di_vis_cull_mode vismode,
     54 		enum pc_di_src_sel src_sel, uint32_t count,
     55 		uint32_t instances, enum a4xx_index_size idx_type,
     56 		uint32_t idx_size, uint32_t idx_offset,
     57 		struct pipe_resource *idx_buffer)
     58 {
     59 	/* for debug after a lock up, write a unique counter value
     60 	 * to scratch7 for each draw, to make it easier to match up
     61 	 * register dumps to cmdstream.  The combination of IB
     62 	 * (scratch6) and DRAW is enough to "triangulate" the
     63 	 * particular draw that caused lockup.
     64 	 */
     65 	emit_marker(ring, 7);
     66 
     67 	OUT_PKT3(ring, CP_DRAW_INDX_OFFSET, idx_buffer ? 6 : 3);
     68 	if (vismode == USE_VISIBILITY) {
     69 		/* leave vis mode blank for now, it will be patched up when
     70 		 * we know if we are binning or not
     71 		 */
     72 		OUT_RINGP(ring, DRAW4(primtype, src_sel, idx_type, 0),
     73 				&batch->draw_patches);
     74 	} else {
     75 		OUT_RING(ring, DRAW4(primtype, src_sel, idx_type, vismode));
     76 	}
     77 	OUT_RING(ring, instances);         /* NumInstances */
     78 	OUT_RING(ring, count);             /* NumIndices */
     79 	if (idx_buffer) {
     80 		OUT_RING(ring, 0x0);           /* XXX */
     81 		OUT_RELOC(ring, fd_resource(idx_buffer)->bo, idx_offset, 0, 0);
     82 		OUT_RING (ring, idx_size);
     83 	}
     84 
     85 	emit_marker(ring, 7);
     86 
     87 	fd_reset_wfi(batch);
     88 }
     89 
     90 static inline enum a4xx_index_size
     91 fd4_size2indextype(unsigned index_size)
     92 {
     93 	switch (index_size) {
     94 	case 1: return INDEX4_SIZE_8_BIT;
     95 	case 2: return INDEX4_SIZE_16_BIT;
     96 	case 4: return INDEX4_SIZE_32_BIT;
     97 	}
     98 	DBG("unsupported index size: %d", index_size);
     99 	assert(0);
    100 	return INDEX4_SIZE_32_BIT;
    101 }
    102 
    103 static inline void
    104 fd4_draw_emit(struct fd_batch *batch, struct fd_ringbuffer *ring,
    105 		enum pc_di_primtype primtype,
    106 		enum pc_di_vis_cull_mode vismode,
    107 		const struct pipe_draw_info *info)
    108 {
    109 	struct pipe_resource *idx_buffer = NULL;
    110 	enum a4xx_index_size idx_type;
    111 	enum pc_di_src_sel src_sel;
    112 	uint32_t idx_size, idx_offset;
    113 
    114 	if (info->indexed) {
    115 		struct pipe_index_buffer *idx = &batch->ctx->indexbuf;
    116 
    117 		assert(!idx->user_buffer);
    118 
    119 		idx_buffer = idx->buffer;
    120 		idx_type = fd4_size2indextype(idx->index_size);
    121 		idx_size = idx->index_size * info->count;
    122 		idx_offset = idx->offset + (info->start * idx->index_size);
    123 		src_sel = DI_SRC_SEL_DMA;
    124 	} else {
    125 		idx_buffer = NULL;
    126 		idx_type = INDEX4_SIZE_32_BIT;
    127 		idx_size = 0;
    128 		idx_offset = 0;
    129 		src_sel = DI_SRC_SEL_AUTO_INDEX;
    130 	}
    131 
    132 	fd4_draw(batch, ring, primtype, vismode, src_sel,
    133 			info->count, info->instance_count,
    134 			idx_type, idx_size, idx_offset, idx_buffer);
    135 }
    136 
    137 #endif /* FD4_DRAW_H_ */
    138