asahi: Add (clean room) IOKit uABI header

This only builds on macOS (depends on IOKit), where it is required for
command buffer submission and tracing the Metal blob.

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Acked-by: Jason Ekstrand <jason@jlekstrand.net>
Acked-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10582>

diff --git a/src/asahi/lib/io.h b/src/asahi/lib/io.h
new file mode 100644 (file)
index 0000000..e5915b0
--- /dev/null
+++ b/src/asahi/lib/io.h
@@ -0,0 +1,216 @@
+/*
+ * Copyright (C) 2021 Alyssa Rosenzweig <alyssa@rosenzweig.io>
+ *
+ * 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 __AGX_IO_H
+#define __AGX_IO_H
+
+#include <stdbool.h>
+#include "agx_bo.h"
+
+#if __APPLE__
+#include <mach/mach.h>
+#include <IOKit/IODataQueueClient.h>
+#endif
+
+#define AGX_SERVICE_TYPE 0x100005
+
+enum agx_selector {
+       AGX_SELECTOR_GET_GLOBAL_IDS = 0x6,
+       AGX_SELECTOR_SET_API = 0x7,
+       AGX_SELECTOR_CREATE_COMMAND_QUEUE = 0x8,
+       AGX_SELECTOR_FREE_COMMAND_QUEUE = 0x9,
+       AGX_SELECTOR_ALLOCATE_MEM = 0xA,
+       AGX_SELECTOR_FREE_MEM = 0xB,
+       AGX_SELECTOR_CREATE_SHMEM = 0xF,
+       AGX_SELECTOR_FREE_SHMEM = 0x10,
+       AGX_SELECTOR_CREATE_NOTIFICATION_QUEUE = 0x11,
+       AGX_SELECTOR_FREE_NOTIFICATION_QUEUE = 0x12,
+       AGX_SELECTOR_SUBMIT_COMMAND_BUFFERS = 0x1E,
+       AGX_SELECTOR_GET_VERSION = 0x23,
+       AGX_NUM_SELECTORS = 0x30
+};
+
+static const char *selector_table[AGX_NUM_SELECTORS] = {
+       "unk0",
+       "unk1",
+       "unk2",
+       "unk3",
+       "unk4",
+       "unk5",
+       "GET_GLOBAL_IDS",
+       "SET_API",
+       "CREATE_COMMAND_QUEUE",
+       "FREE_COMMAND_QUEUE",
+       "ALLOCATE_MEM",
+       "FREE_MEM",
+       "unkC",
+       "unkD",
+       "unkE",
+       "CREATE_SHMEM",
+       "FREE_SHMEM",
+       "CREATE_NOTIFICATION_QUEUE",
+       "FREE_NOTIFICATION_QUEUE",
+       "unk13",
+       "unk14",
+       "unk15",
+       "unk16",
+       "unk17",
+       "unk18",
+       "unk19",
+       "unk1A",
+       "unk1B",
+       "unk1C",
+       "unk1D",
+       "SUBMIT_COMMAND_BUFFERS",
+       "unk1F",
+       "unk20",
+       "unk21",
+       "unk22",
+       "GET_VERSION",
+       "unk24",
+       "unk25",
+       "unk26",
+       "unk27",
+       "unk28",
+       "unk29",
+       "unk2A",
+       "unk2B",
+       "unk2C",
+       "unk2D",
+       "unk2E",
+       "unk2F"
+};
+
+static inline const char *
+wrap_selector_name(uint32_t selector)
+{
+       return (selector < AGX_NUM_SELECTORS) ? selector_table[selector] : "unk??";
+}
+
+struct agx_create_command_queue_resp {
+       uint64_t id;
+       uint32_t unk2; // 90 0A 08 27
+       uint32_t unk3; // 0
+} __attribute__((packed));
+
+struct agx_create_shmem_resp {
+       void *map;
+       uint32_t size;
+       uint32_t id;
+} __attribute__((packed));
+
+struct agx_create_notification_queue_resp {
+#ifdef __APPLE__
+       IODataQueueMemory *queue;
+#else
+   void *queue;
+#endif
+       uint32_t unk2; // 1
+       uint32_t unk3; // 0
+} __attribute__((packed));
+
+struct agx_submit_cmdbuf_req {
+       uint32_t unk0;
+       uint32_t unk1;
+       uint32_t cmdbuf;
+       uint32_t mappings;
+       void *user_0;
+       void *user_1;
+       uint32_t unk2;
+       uint32_t unk3;
+} __attribute__((packed));
+
+/* Memory allocation isn't really understood yet. By comparing SHADER/CMDBUF_32
+ * vs everything else, it appears the 0x40000000 bit indicates the GPU VA must
+ * be be in the first 4GiB */
+
+enum agx_memory_type {
+       AGX_MEMORY_TYPE_NORMAL      = 0x00000000, /* used for user allocations */
+       AGX_MEMORY_TYPE_UNK         = 0x08000000, /* unknown */
+       AGX_MEMORY_TYPE_CMDBUF_64   = 0x18000000, /* used for command buffer storage */
+       AGX_MEMORY_TYPE_SHADER      = 0x48000000, /* used for shader memory, with VA = 0 */
+       AGX_MEMORY_TYPE_CMDBUF_32   = 0x58000000, /* used for command buffers, with VA < 32-bit */
+       AGX_MEMORY_TYPE_FRAMEBUFFER = 0x00888F00, /* used for framebuffer backing */
+};
+
+static inline const char *
+agx_memory_type_name(uint32_t type)
+{
+       switch (type) {
+       case AGX_MEMORY_TYPE_NORMAL: return "normal";
+       case AGX_MEMORY_TYPE_UNK: return "unk";
+       case AGX_MEMORY_TYPE_CMDBUF_64: return "cmdbuf_64";
+       case AGX_MEMORY_TYPE_SHADER: return "shader";
+       case AGX_MEMORY_TYPE_CMDBUF_32: return "cmdbuf_32";
+       case AGX_MEMORY_TYPE_FRAMEBUFFER: return "framebuffer";
+       default: return NULL;
+       }
+}
+
+struct agx_notification_queue {
+#ifdef __APPLE
+   mach_port_t port;
+   IODataQueueMemory *queue;
+#else
+   unsigned port;
+   void *queue;
+#endif
+   unsigned id;
+};
+
+struct agx_command_queue {
+   unsigned id;
+   struct agx_notification_queue notif;
+};
+
+/* Not sure if this is hardware or software defined */
+
+struct agx_map_header {
+       uint64_t cmdbuf_id; // GUID
+       uint32_t unk2; // 01 00 00 00
+       uint32_t unk3; // 28 05 00 80
+       uint64_t encoder_id; // GUID
+       uint32_t unk6; // 00 00 00 00
+       uint32_t unk7; // 80 07 00 00
+       uint32_t nr_entries_1;
+       uint32_t nr_entries_2;
+       uint32_t unka; // 0b 00 00 00
+       uint32_t padding[5];
+} __attribute__((packed));
+
+struct agx_map_entry {
+       uint32_t unkAAA; // 20 00 00 00
+       uint32_t unk2; // 00 00 00 00 
+       uint32_t unk3; // 00 00 00 00
+       uint32_t unk4; // 00 00 00 00
+       uint32_t unk5; // 00 00 00 00
+       uint32_t unk6; // 00 00 00 00 
+       uint32_t unkBBB; // 01 00 00 00
+       uint32_t unk8; // 00 00 00 00
+       uint32_t unk9; // 00 00 00 00
+       uint32_t unka; // ff ff 01 00 
+       uint32_t index;
+       uint32_t padding[5];
+} __attribute__((packed));
+
+#endif