From b11296bd3e6fdf093e31dcaa2eb50f81ce5e581e Mon Sep 17 00:00:00 2001
From: Christian Gmeiner <cgmeiner@igalia.com>
Date: Fri, 13 Sep 2024 19:19:30 +0200
Subject: [PATCH] broadcom/simulator: Add support for asahi based systems
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Dumb buffers do not work with the asahi kernel driver. So use asahi ioctl to create
proper buffers.

Signed-off-by: Christian Gmeiner <cgmeiner@igalia.com>
Reviewed-by: Alejandro Piñeiro <apinheiro@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/31169>
---
 src/broadcom/simulator/v3d_simulator.c | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/src/broadcom/simulator/v3d_simulator.c b/src/broadcom/simulator/v3d_simulator.c
index 04ea4194a25..1898cd6b709 100644
--- a/src/broadcom/simulator/v3d_simulator.c
+++ b/src/broadcom/simulator/v3d_simulator.c
@@ -61,6 +61,7 @@
 #include "util/u_math.h"
 
 #include <xf86drm.h>
+#include "asahi/lib/unstable_asahi_drm.h"
 #include "drm-uapi/amdgpu_drm.h"
 #include "drm-uapi/i915_drm.h"
 #include "drm-uapi/v3d_drm.h"
@@ -102,6 +103,7 @@ static struct v3d_simulator_state {
 enum gem_type {
         GEM_I915,
         GEM_AMDGPU,
+        GEM_ASAHI,
         GEM_DUMB
 };
 
@@ -277,6 +279,16 @@ v3d_create_simulator_bo_for_gem(int fd, int handle, unsigned size)
                 sim_bo->mmap_offset = map.out.addr_ptr;
                 break;
         }
+        case GEM_ASAHI:
+        {
+                struct drm_asahi_gem_mmap_offset gem_mmap_offset = {
+                        .handle = handle
+                };
+
+                ret = drmIoctl(fd, DRM_IOCTL_ASAHI_GEM_MMAP_OFFSET, &gem_mmap_offset);
+                sim_bo->mmap_offset = gem_mmap_offset.offset;
+                break;
+        }
         default:
         {
                 struct drm_mode_map_dumb map = {
@@ -564,6 +576,17 @@ v3d_simulator_create_bo_ioctl(int fd, struct drm_v3d_create_bo *args)
                 args->handle = create.out.handle;
                 break;
         }
+        case GEM_ASAHI:
+        {
+                struct drm_asahi_gem_create create = {
+                        .size = args->size,
+                };
+
+                ret = drmIoctl(fd, DRM_IOCTL_ASAHI_GEM_CREATE, &create);
+
+                args->handle = create.handle;
+                break;
+        }
         default:
         {
                 struct drm_mode_create_dumb create = {
@@ -1180,6 +1203,8 @@ v3d_simulator_init(int fd)
                 sim_file->gem_type = GEM_I915;
         else if (version && strncmp(version->name, "amdgpu", version->name_len) == 0)
                 sim_file->gem_type = GEM_AMDGPU;
+        else if (version && strncmp(version->name, "asahi", version->name_len) == 0)
+                sim_file->gem_type = GEM_ASAHI;
         else
                 sim_file->gem_type = GEM_DUMB;
         drmFreeVersion(version);