diff mbox series

[v2,5/8] hw/display/apple-gfx: Replaces magic number with queried MMIO length

Message ID 20240717110326.45230-6-phil@philjordan.eu (mailing list archive)
State New, archived
Headers show
Series hw/display/apple-gfx: New macOS PV Graphics device | expand

Commit Message

Phil Dennis-Jordan July 17, 2024, 11:03 a.m. UTC
Rather than specifying the length of the device's MMIO range as an
unnamed literal constant (which is at least documented as a comment in
the framework headers), we query the PVG framework's API for the
recommended value. This also avoids problems in future, in case the
currently documented value for the default changes.

Signed-off-by: Phil Dennis-Jordan <phil@philjordan.eu>
---
 hw/display/apple-gfx.m  | 16 +++++++++++++++-
 hw/display/trace-events |  1 +
 2 files changed, 16 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/hw/display/apple-gfx.m b/hw/display/apple-gfx.m
index 3756a9e3ff..6f374455f9 100644
--- a/hw/display/apple-gfx.m
+++ b/hw/display/apple-gfx.m
@@ -283,12 +283,26 @@  static void create_fb(AppleGFXState *s)
     s->cursor_show = true;
 }
 
+static size_t apple_gfx_get_default_mmio_range_size(void)
+{
+    size_t mmio_range_size;
+    @autoreleasepool {
+        PGDeviceDescriptor *desc = [PGDeviceDescriptor new];
+        mmio_range_size = desc.mmioLength;
+        [desc release];
+    }
+    return mmio_range_size;
+}
+
 void apple_gfx_common_init(Object *obj, AppleGFXState *s, const char* obj_name)
 {
     Error *local_err = NULL;
     int r;
+    size_t mmio_range_size = apple_gfx_get_default_mmio_range_size();
 
-    memory_region_init_io(&s->iomem_gfx, obj, &apple_gfx_ops, s, obj_name, 0x4000);
+    trace_apple_gfx_common_init(obj_name, mmio_range_size);
+    memory_region_init_io(&s->iomem_gfx, obj, &apple_gfx_ops, s, obj_name,
+                          mmio_range_size);
 
     /* TODO: PVG framework supports serialising device state: integrate it! */
     if (apple_gfx_mig_blocker == NULL) {
diff --git a/hw/display/trace-events b/hw/display/trace-events
index e35582d659..1809a358e3 100644
--- a/hw/display/trace-events
+++ b/hw/display/trace-events
@@ -208,6 +208,7 @@  apple_gfx_mode_change(uint64_t x, uint64_t y) "x=%"PRId64" y=%"PRId64
 apple_gfx_cursor_set(uint32_t bpp, uint64_t width, uint64_t height) "bpp=%d width=%"PRId64" height=0x%"PRId64
 apple_gfx_cursor_show(uint32_t show) "show=%d"
 apple_gfx_cursor_move(void) ""
+apple_gfx_common_init(const char *device_name, size_t mmio_size) "device: %s; MMIO size: %zu bytes"
 
 # apple-gfx-vmapple.m
 apple_iosfc_read(uint64_t offset, uint64_t res) "offset=0x%"PRIx64" res=0x%"PRIx64