From d43ec104b7487d3a8930c0d1cd2a2732967f6275 Mon Sep 17 00:00:00 2001 From: Alyssa Rosenzweig Date: Tue, 5 Feb 2019 05:13:50 +0000 Subject: [PATCH] panfrost: Include glue for out-of-tree legacy code In addition to the DRM interface in active development, for legacy kernels Panfrost has a small, optional, out-of-tree glue repository. For various reasons, this legacy code should not be included in Mesa proper, but this commit allows it to coexist peacefully with upstream Panfrost. If the nondrm repo is cloned/symlinked to the directory `src/gallium/drivers/panfrost/nondrm`, legacy functionality will be built. Otherwise, the driver will build normally, though a runtime error message will be printed if a legacy kernel is detected. This workaround is icky, but it allows a nearly-upstream Panfrost to work on real hardware, today. Ideally, this patch will be reverted when the Panfrost kernel module is mature and we drop legacy support. Signed-off-by: Alyssa Rosenzweig --- src/gallium/drivers/panfrost/.gitignore | 1 + src/gallium/drivers/panfrost/meson.build | 21 ++++++++++++++++++--- src/gallium/drivers/panfrost/pan_context.c | 3 ++- src/gallium/drivers/panfrost/pan_screen.c | 9 +++++++-- src/gallium/drivers/panfrost/pan_screen.h | 2 +- 5 files changed, 29 insertions(+), 7 deletions(-) create mode 100644 src/gallium/drivers/panfrost/.gitignore diff --git a/src/gallium/drivers/panfrost/.gitignore b/src/gallium/drivers/panfrost/.gitignore new file mode 100644 index 00000000000..9d2c2c18bef --- /dev/null +++ b/src/gallium/drivers/panfrost/.gitignore @@ -0,0 +1 @@ +nondrm diff --git a/src/gallium/drivers/panfrost/meson.build b/src/gallium/drivers/panfrost/meson.build index 9b90035d691..5e799eae119 100644 --- a/src/gallium/drivers/panfrost/meson.build +++ b/src/gallium/drivers/panfrost/meson.build @@ -39,7 +39,7 @@ files_panfrost = files( 'pan_blending.c', 'pan_blend_shaders.c', 'pan_wallpaper.c', - 'pan_pretty_print.c' + 'pan_pretty_print.c', ) inc_panfrost = [ @@ -53,6 +53,21 @@ inc_panfrost = [ include_directories('midgard'), ] +compile_args_panfrost = [ + '-DGALLIUM_PANFROST', + '-Wno-pointer-arith' +] + +overlay = join_paths(meson.source_root(), meson.current_source_dir(), 'nondrm/pan_nondrm.c') +nondrm_overlay_check = run_command('ls', overlay) +has_nondrm_overlay = nondrm_overlay_check.returncode() == 0 + +if has_nondrm_overlay + files_panfrost += files('nondrm/pan_nondrm.c') + inc_panfrost += include_directories('nondrm/include') + compile_args_panfrost += '-DPAN_NONDRM_OVERLAY' +endif + midgard_nir_algebraic_c = custom_target( 'midgard_nir_algebraic.c', input : 'midgard/midgard_nir_algebraic.py', @@ -73,11 +88,11 @@ libpanfrost = static_library( idep_nir ], include_directories : inc_panfrost, - c_args : [c_vis_args, c_msvc_compat_args], + c_args : [c_vis_args, c_msvc_compat_args, compile_args_panfrost], ) driver_panfrost = declare_dependency( - compile_args : ['-DGALLIUM_PANFROST', '-Wno-pointer-arith'], + compile_args : compile_args_panfrost, link_with : [libpanfrost, libpanfrostwinsys], ) diff --git a/src/gallium/drivers/panfrost/pan_context.c b/src/gallium/drivers/panfrost/pan_context.c index 0551d553182..fb4130362e0 100644 --- a/src/gallium/drivers/panfrost/pan_context.c +++ b/src/gallium/drivers/panfrost/pan_context.c @@ -1431,7 +1431,8 @@ panfrost_submit_frame(struct panfrost_context *ctx, bool flush_immediate) #ifndef DRY_RUN - int fragment_id = screen->driver->submit_vs_fs_job(ctx, has_draws); + bool is_scanout = panfrost_is_scanout(ctx); + int fragment_id = screen->driver->submit_vs_fs_job(ctx, has_draws, is_scanout); /* If visual, we can stall a frame */ diff --git a/src/gallium/drivers/panfrost/pan_screen.c b/src/gallium/drivers/panfrost/pan_screen.c index d2ea5a692f5..5ee3b4c6006 100644 --- a/src/gallium/drivers/panfrost/pan_screen.c +++ b/src/gallium/drivers/panfrost/pan_screen.c @@ -50,7 +50,8 @@ #include "pan_context.h" #include "midgard/midgard_compile.h" -#include "pan_drm.h" +struct panfrost_driver *panfrost_create_drm_driver(int fd); +struct panfrost_driver *panfrost_create_nondrm_driver(int fd); static const char * panfrost_get_name(struct pipe_screen *screen) @@ -539,8 +540,12 @@ panfrost_create_screen(int fd, struct renderonly *ro, bool is_drm) if (is_drm) { screen->driver = panfrost_create_drm_driver(fd); } else { - fprintf(stderr, "Legacy (non-DRM) drivers are not supported in upstream Mesa\n"); +#ifdef PAN_NONDRM_OVERLAY + screen->driver = panfrost_create_nondrm_driver(fd); +#else + fprintf(stderr, "Legacy (non-DRM) operation requires out-of-tree overlay\n"); return NULL; +#endif } #ifdef DUMP_PERFORMANCE_COUNTERS diff --git a/src/gallium/drivers/panfrost/pan_screen.h b/src/gallium/drivers/panfrost/pan_screen.h index 4c8fe8dd720..59787c8017c 100644 --- a/src/gallium/drivers/panfrost/pan_screen.h +++ b/src/gallium/drivers/panfrost/pan_screen.h @@ -53,7 +53,7 @@ struct panfrost_driver { void (*unmap_bo) (struct panfrost_context *ctx, struct pipe_transfer *transfer); void (*destroy_bo) (struct panfrost_screen *screen, struct panfrost_bo *bo); - int (*submit_vs_fs_job) (struct panfrost_context *ctx, bool has_draws); + int (*submit_vs_fs_job) (struct panfrost_context *ctx, bool has_draws, bool is_scanout); void (*force_flush_fragment) (struct panfrost_context *ctx); void (*allocate_slab) (struct panfrost_screen *screen, struct panfrost_memory *mem, -- 2.30.2