The efifb driver behaves almost identically to the inteldrm driver
for wscons, but did not implement the getchar() accessops, so
wsmoused would fail at startup.
Separately, I increased the maximum screen dimensions to 160x50 to
allow the 12x24 font to be used on an 1920 monitor, which looks great!
Unlike the intel driver, efifb has a static buffer of that size,
which is a non-trivial amount of memory. Not setting the backing
store to save the memory results in an ultra-slow console until the
driver gets fully initialized, because it is doing scrolls by reading
from write combined memory instead of the redrawing all the
characters.
I plan on changing that to a dynamic allocation once I am more
comfortable with the reinitialization that goes on when autoconf
gets around to the console display device, so feel free to punt on
that if you want to wait.
Index: efifb.c
===================================================================
RCS file: /cvs/src/sys/arch/amd64/amd64/efifb.c,v
retrieving revision 1.27
diff -u -p -r1.27 efifb.c
--- efifb.c 24 Jan 2020 05:27:31 -0000 1.27
+++ efifb.c 24 May 2020 23:32:47 -0000
@@ -100,6 +100,7 @@ int efifb_alloc_screen(void *, const st
void efifb_free_screen(void *, void *);
int efifb_show_screen(void *, void *, int, void (*cb) (void *, int,
int),
void *);
+int efifb_getchar(void *, int, int, struct wsdisplay_charcell *);
int efifb_list_font(void *, struct wsdisplay_font *);
int efifb_load_font(void *, void *, struct wsdisplay_font *);
void efifb_scrollback(void *, void *, int lines);
@@ -114,8 +115,9 @@ const struct cfattach efifb_ca = {
sizeof(struct efifb_softc), efifb_match, efifb_attach, NULL
};
-#define EFIFB_WIDTH 100
-#define EFIFB_HEIGHT 31
+/* support a 12x24 font on a 1920x1200 screen */
+#define EFIFB_WIDTH 160
+#define EFIFB_HEIGHT 50
struct wsscreen_descr efifb_std_descr = { "std" };
@@ -133,6 +135,7 @@ struct wsdisplay_accessops efifb_accesso
.alloc_screen = efifb_alloc_screen,
.free_screen = efifb_free_screen,
.show_screen = efifb_show_screen,
+ .getchar = efifb_getchar,
.load_font = efifb_load_font,
.list_font = efifb_list_font,
.scrollback = efifb_scrollback,
@@ -371,6 +374,15 @@ efifb_show_screen(void *v, void *cookie,
struct rasops_info *ri = &sc->sc_fb->rinfo;
return rasops_show_screen(ri, cookie, waitok, cb, cb_arg);
+}
+
+int
+efifb_getchar(void *v, int row, int col, struct wsdisplay_charcell
*cell)
+{
+ struct efifb_softc *sc = v;
+ struct rasops_info *ri = &sc->sc_fb->rinfo;
+
+ return rasops_getchar(ri, row, col, cell);
}
int
