panfrost: Move non-Gallium files outside of Gallium

In preparation for a Panfrost-based non-Gallium driver (maybe
Vulkan...?), hoist everything except for the Gallium driver into a
shared src/panfrost. Practically, that means the compilers, the headers,
and pandecode.

Signed-off-by: Alyssa Rosenzweig <[email protected]>

1 files changed, 127 insertions, 0 deletions

diff --git a/src/panfrost/midgard/midgard_compile.h b/src/panfrost/midgard/midgard_compile.h
new file mode 100644
index 00000000000..147494b8e8a
--- /dev/null
+++ b/src/panfrost/midgard/midgard_compile.h
@@ -0,0 +1,127 @@
+/*
+ * Copyright (C) 2018-2019 Alyssa Rosenzweig <[email protected]>
+ *
+ * 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.
+ */
+
+#ifndef __MIDGARD_H_
+#define __MIDGARD_H_
+
+#include "compiler/nir/nir.h"
+#include "util/u_dynarray.h"
+
+/* Define the general compiler entry point */
+
+#define MAX_SYSVAL_COUNT 32
+
+/* Allow 2D of sysval IDs, while allowing nonparametric sysvals to equal
+ * their class for equal comparison */
+
+#define PAN_SYSVAL(type, no) (((no) << 16) | PAN_SYSVAL_##type)
+#define PAN_SYSVAL_TYPE(sysval) ((sysval) & 0xffff)
+#define PAN_SYSVAL_ID(sysval) ((sysval) >> 16)
+
+/* Define some common types. We start at one for easy indexing of hash
+ * tables internal to the compiler */
+
+enum {
+        PAN_SYSVAL_VIEWPORT_SCALE = 1,
+        PAN_SYSVAL_VIEWPORT_OFFSET = 2,
+        PAN_SYSVAL_TEXTURE_SIZE = 3,
+} pan_sysval;
+
+#define PAN_TXS_SYSVAL_ID(texidx, dim, is_array)          \
+	((texidx) | ((dim) << 7) | ((is_array) ? (1 << 9) : 0))
+
+#define PAN_SYSVAL_ID_TO_TXS_TEX_IDX(id)        ((id) & 0x7f)
+#define PAN_SYSVAL_ID_TO_TXS_DIM(id)            (((id) >> 7) & 0x3)
+#define PAN_SYSVAL_ID_TO_TXS_IS_ARRAY(id)       !!((id) & (1 << 9))
+
+typedef struct {
+        int work_register_count;
+        int uniform_count;
+        int uniform_cutoff;
+
+        int attribute_count;
+        int varying_count;
+
+        /* Prepended before uniforms, mapping to SYSVAL_ names for the
+         * sysval */
+
+        unsigned sysval_count;
+        unsigned sysvals[MAX_SYSVAL_COUNT];
+
+        unsigned varyings[32];
+
+        /* Boolean properties of the program */
+        bool can_discard;
+        bool writes_point_size;
+
+        int first_tag;
+
+        struct util_dynarray compiled;
+
+        /* For a blend shader using a constant color -- patch point. If
+         * negative, there's no constant. */
+
+        int blend_patch_offset;
+
+        /* IN: For a fragment shader with a lowered alpha test, the ref value */
+        float alpha_ref;
+} midgard_program;
+
+int
+midgard_compile_shader_nir(nir_shader *nir, midgard_program *program, bool is_blend);
+
+/* NIR options are shared between the standalone compiler and the online
+ * compiler. Defining it here is the simplest, though maybe not the Right
+ * solution. */
+
+static const nir_shader_compiler_options midgard_nir_options = {
+        .lower_ffma = true,
+        .lower_sub = true,
+        .lower_scmp = true,
+        .lower_flrp32 = true,
+        .lower_flrp64 = true,
+        .lower_ffract = true,
+        .lower_fmod = true,
+        .lower_fdiv = true,
+        .lower_idiv = true,
+        .lower_isign = true,
+        .lower_fpow = true,
+        .lower_find_lsb = true,
+
+        .lower_wpos_pntc = true,
+
+        /* TODO: We have native ops to help here, which we'll want to look into
+         * eventually */
+        .lower_fsign = true,
+
+        .vertex_id_zero_based = true,
+        .lower_extract_byte = true,
+        .lower_extract_word = true,
+        .lower_rotate = true,
+
+        .lower_doubles_options = nir_lower_dmod,
+
+        .vectorize_io = true,
+};
+
+#endif