1/*
2 * Copyright (C) 2016 Rob Clark <robclark@freedesktop.org>
3 * Copyright © 2018 Google, Inc.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
14 * Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 * SOFTWARE.
23 *
24 * Authors:
25 *    Rob Clark <robclark@freedesktop.org>
26 */
27
28#include "drm-uapi/drm_fourcc.h"
29#include "pipe/p_screen.h"
30#include "util/format/u_format.h"
31
32#include "fd6_blitter.h"
33#include "fd6_context.h"
34#include "fd6_emit.h"
35#include "fd6_format.h"
36#include "fd6_resource.h"
37#include "fd6_screen.h"
38
39#include "ir3/ir3_compiler.h"
40
41static bool
42valid_sample_count(unsigned sample_count)
43{
44   switch (sample_count) {
45   case 0:
46   case 1:
47   case 2:
48   case 4:
49      // TODO seems 8x works, but increases lrz width or height.. but the
50      // blob I have doesn't seem to expose any egl configs w/ 8x, so
51      // just hide it for now and revisit later.
52      //	case 8:
53      return true;
54   default:
55      return false;
56   }
57}
58
59static bool
60fd6_screen_is_format_supported(struct pipe_screen *pscreen,
61                               enum pipe_format format,
62                               enum pipe_texture_target target,
63                               unsigned sample_count,
64                               unsigned storage_sample_count, unsigned usage)
65{
66   unsigned retval = 0;
67
68   if ((target >= PIPE_MAX_TEXTURE_TYPES) ||
69       !valid_sample_count(sample_count)) {
70      DBG("not supported: format=%s, target=%d, sample_count=%d, usage=%x",
71          util_format_name(format), target, sample_count, usage);
72      return false;
73   }
74
75   if (MAX2(1, sample_count) != MAX2(1, storage_sample_count))
76      return false;
77
78   if ((usage & PIPE_BIND_VERTEX_BUFFER) &&
79       (fd6_vertex_format(format) != FMT6_NONE)) {
80      retval |= PIPE_BIND_VERTEX_BUFFER;
81   }
82
83   bool has_color = fd6_color_format(format, TILE6_LINEAR) != FMT6_NONE;
84   bool has_tex = fd6_texture_format(format, TILE6_LINEAR) != FMT6_NONE;
85
86   if ((usage & (PIPE_BIND_SAMPLER_VIEW | PIPE_BIND_SHADER_IMAGE)) &&
87       has_tex &&
88       (target == PIPE_BUFFER || util_format_get_blocksize(format) != 12)) {
89      retval |= usage & (PIPE_BIND_SAMPLER_VIEW | PIPE_BIND_SHADER_IMAGE);
90   }
91
92   if ((usage &
93        (PIPE_BIND_RENDER_TARGET | PIPE_BIND_DISPLAY_TARGET |
94         PIPE_BIND_SCANOUT | PIPE_BIND_SHARED | PIPE_BIND_COMPUTE_RESOURCE)) &&
95       has_color && has_tex) {
96      retval |= usage & (PIPE_BIND_RENDER_TARGET | PIPE_BIND_DISPLAY_TARGET |
97                         PIPE_BIND_SCANOUT | PIPE_BIND_SHARED |
98                         PIPE_BIND_COMPUTE_RESOURCE);
99   }
100
101   /* For ARB_framebuffer_no_attachments: */
102   if ((usage & PIPE_BIND_RENDER_TARGET) && (format == PIPE_FORMAT_NONE)) {
103      retval |= usage & PIPE_BIND_RENDER_TARGET;
104   }
105
106   if ((usage & PIPE_BIND_DEPTH_STENCIL) &&
107       (fd6_pipe2depth(format) != (enum a6xx_depth_format) ~0) && has_tex) {
108      retval |= PIPE_BIND_DEPTH_STENCIL;
109   }
110
111   if ((usage & PIPE_BIND_INDEX_BUFFER) &&
112       (fd_pipe2index(format) != (enum pc_di_index_size) ~0)) {
113      retval |= PIPE_BIND_INDEX_BUFFER;
114   }
115
116   if (retval != usage) {
117      DBG("not supported: format=%s, target=%d, sample_count=%d, "
118          "usage=%x, retval=%x",
119          util_format_name(format), target, sample_count, usage, retval);
120   }
121
122   return retval == usage;
123}
124
125/* clang-format off */
126static const uint8_t primtypes[] = {
127   [PIPE_PRIM_POINTS]                      = DI_PT_POINTLIST,
128   [PIPE_PRIM_LINES]                       = DI_PT_LINELIST,
129   [PIPE_PRIM_LINE_STRIP]                  = DI_PT_LINESTRIP,
130   [PIPE_PRIM_LINE_LOOP]                   = DI_PT_LINELOOP,
131   [PIPE_PRIM_TRIANGLES]                   = DI_PT_TRILIST,
132   [PIPE_PRIM_TRIANGLE_STRIP]              = DI_PT_TRISTRIP,
133   [PIPE_PRIM_TRIANGLE_FAN]                = DI_PT_TRIFAN,
134   [PIPE_PRIM_LINES_ADJACENCY]             = DI_PT_LINE_ADJ,
135   [PIPE_PRIM_LINE_STRIP_ADJACENCY]        = DI_PT_LINESTRIP_ADJ,
136   [PIPE_PRIM_TRIANGLES_ADJACENCY]         = DI_PT_TRI_ADJ,
137   [PIPE_PRIM_TRIANGLE_STRIP_ADJACENCY]    = DI_PT_TRISTRIP_ADJ,
138   [PIPE_PRIM_PATCHES]                     = DI_PT_PATCHES0,
139   [PIPE_PRIM_MAX]                         = DI_PT_RECTLIST,  /* internal clear blits */
140};
141/* clang-format on */
142
143void
144fd6_screen_init(struct pipe_screen *pscreen)
145{
146   struct fd_screen *screen = fd_screen(pscreen);
147
148   screen->max_rts = A6XX_MAX_RENDER_TARGETS;
149
150   screen->ccu_offset_bypass = screen->info->num_ccu * A6XX_CCU_DEPTH_SIZE;
151   screen->ccu_offset_gmem = (screen->gmemsize_bytes -
152         screen->info->num_ccu * A6XX_CCU_GMEM_COLOR_SIZE);
153
154   /* Currently only FB_READ forces GMEM path, mostly because we'd have to
155    * deal with cmdstream patching otherwise..
156    */
157   screen->gmem_reason_mask = FD_GMEM_CLEARS_DEPTH_STENCIL |
158                              FD_GMEM_DEPTH_ENABLED | FD_GMEM_STENCIL_ENABLED |
159                              FD_GMEM_BLEND_ENABLED | FD_GMEM_LOGICOP_ENABLED;
160
161   pscreen->context_create = fd6_context_create;
162   pscreen->is_format_supported = fd6_screen_is_format_supported;
163
164   screen->tile_mode = fd6_tile_mode;
165
166   fd6_resource_screen_init(pscreen);
167   fd6_emit_init_screen(pscreen);
168   ir3_screen_init(pscreen);
169
170   screen->primtypes = primtypes;
171}
172