panfrost: Remove support for legacy kernels

Previously, there was minimal support for interoperating with legacy
kernels (reusing kernel modules originally designed for proprietary
legacy userspaces, rather than for upstream-friendly free software
stacks). Now that the Panfrost kernel is stabilising, this commit drops
the legacy code path.

Panfrost users need to use a modern, mainline kernel supporting the
Panfrost kernel driver from this commit forward.

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

1 files changed, 2 insertions, 12 deletions

diff --git a/src/gallium/drivers/panfrost/pan_screen.c b/src/gallium/drivers/panfrost/pan_screen.c
index 682eb37f5c7..71c6175d069 100644
--- a/src/gallium/drivers/panfrost/pan_screen.c
+++ b/src/gallium/drivers/panfrost/pan_screen.c
@@ -63,7 +63,6 @@ DEBUG_GET_ONCE_FLAGS_OPTION(pan_debug, "PAN_MESA_DEBUG", debug_options, 0)
 int pan_debug = 0;
 
 struct panfrost_driver *panfrost_create_drm_driver(int fd);
-struct panfrost_driver *panfrost_create_nondrm_driver(int fd);
 
 const char *pan_counters_base = NULL;
 
@@ -549,7 +548,7 @@ panfrost_screen_get_compiler_options(struct pipe_screen *pscreen,
 }
 
 struct pipe_screen *
-panfrost_create_screen(int fd, struct renderonly *ro, bool is_drm)
+panfrost_create_screen(int fd, struct renderonly *ro)
 {
         struct panfrost_screen *screen = CALLOC_STRUCT(panfrost_screen);
 
@@ -567,16 +566,7 @@ panfrost_create_screen(int fd, struct renderonly *ro, bool is_drm)
                 }
         }
 
-        if (is_drm) {
-                screen->driver = panfrost_create_drm_driver(fd);
-        } else {
-#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
-        }
+        screen->driver = panfrost_create_drm_driver(fd);
 
         /* Dump memory and/or performance counters iff asked for in the environment */
         const char *pantrace_base = getenv("PANTRACE_BASE");