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From: Phil Dennis-Jordan <phil@philjordan.eu>
To: qemu-devel@nongnu.org
Cc: agraf@csgraf.de, phil@philjordan.eu, peter.maydell@linaro.org,
pbonzini@redhat.com, rad@semihalf.com, quic_llindhol@quicinc.com,
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akihiko.odaki@daynix.com, qemu-arm@nongnu.org, qemu-block@nongnu.org,
qemu-riscv@nongnu.org, balaton@eik.bme.hu
Subject: [PATCH v15 04/15] hw/display/apple-gfx: Adds configurable mode list
Date: Wed, 18 Dec 2024 21:20:25 +0100
Message-Id: <20241218202036.80064-5-phil@philjordan.eu>
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This change adds a property 'display_modes' on the graphics device
which permits specifying a list of display modes. (screen resolution
and refresh rate)
The property is an array of a custom type to make the syntax slightly
less awkward to use, for example:
-device '{"driver":"apple-gfx-pci", "display-modes":["1920x1080@60", "3840x=
2160@60"]}'
Signed-off-by: Phil Dennis-Jordan <phil@philjordan.eu>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Tested-by: Akihiko Odaki <akihiko.odaki@daynix.com>
---
v4:
* Switched to the native array property type, which recently gained
command line support.
* The property has also been added to the -mmio variant.
* Tidied up the code a little.
v5:
* Better error handling and buffer management in property parsing and
output.
v6:
* Switched to using NSMutableArray for the mode list to avoid need for
allocating a temporary array - previously done with alloca.
v7:
* Simplified error handling in property parsing
v8:
* More consistent integer variable types.
v9:
* Re-ordered type definitions so we can drop a 'struct' keyword.
v15:
* Constified the property table.
hw/display/apple-gfx-mmio.m | 8 +++
hw/display/apple-gfx-pci.m | 9 ++-
hw/display/apple-gfx.h | 11 +++
hw/display/apple-gfx.m | 135 +++++++++++++++++++++++++++++++-----
hw/display/trace-events | 2 +
5 files changed, 145 insertions(+), 20 deletions(-)
diff --git a/hw/display/apple-gfx-mmio.m b/hw/display/apple-gfx-mmio.m
index 1a46ff48b75..328afe8f192 100644
--- a/hw/display/apple-gfx-mmio.m
+++ b/hw/display/apple-gfx-mmio.m
@@ -258,6 +258,12 @@ static void apple_gfx_mmio_reset(Object *obj, ResetTyp=
e type)
[s->common.pgdev reset];
}
=20
+static const Property apple_gfx_mmio_properties[] =3D {
+ DEFINE_PROP_ARRAY("display-modes", AppleGFXMMIOState,
+ common.num_display_modes, common.display_modes,
+ qdev_prop_display_mode, AppleGFXDisplayMode),
+ DEFINE_PROP_END_OF_LIST(),
+};
=20
static void apple_gfx_mmio_class_init(ObjectClass *klass, void *data)
{
@@ -267,6 +273,8 @@ static void apple_gfx_mmio_class_init(ObjectClass *klas=
s, void *data)
rc->phases.hold =3D apple_gfx_mmio_reset;
dc->hotpluggable =3D false;
dc->realize =3D apple_gfx_mmio_realize;
+
+ device_class_set_props(dc, apple_gfx_mmio_properties);
}
=20
static TypeInfo apple_gfx_mmio_types[] =3D {
diff --git a/hw/display/apple-gfx-pci.m b/hw/display/apple-gfx-pci.m
index 5ff6a487cfc..3e8b86b8d25 100644
--- a/hw/display/apple-gfx-pci.m
+++ b/hw/display/apple-gfx-pci.m
@@ -114,6 +114,13 @@ static void apple_gfx_pci_reset(Object *obj, ResetType=
type)
[s->common.pgdev reset];
}
=20
+static const Property apple_gfx_pci_properties[] =3D {
+ DEFINE_PROP_ARRAY("display-modes", AppleGFXPCIState,
+ common.num_display_modes, common.display_modes,
+ qdev_prop_display_mode, AppleGFXDisplayMode),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
static void apple_gfx_pci_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc =3D DEVICE_CLASS(klass);
@@ -130,7 +137,7 @@ static void apple_gfx_pci_class_init(ObjectClass *klass=
, void *data)
pci->class_id =3D PCI_CLASS_DISPLAY_OTHER;
pci->realize =3D apple_gfx_pci_realize;
=20
- /* TODO: Property for setting mode list */
+ device_class_set_props(dc, apple_gfx_pci_properties);
}
=20
static TypeInfo apple_gfx_pci_types[] =3D {
diff --git a/hw/display/apple-gfx.h b/hw/display/apple-gfx.h
index ef2455e3bdc..a1160bf6619 100644
--- a/hw/display/apple-gfx.h
+++ b/hw/display/apple-gfx.h
@@ -16,6 +16,7 @@
#import <ParavirtualizedGraphics/ParavirtualizedGraphics.h>
#include "qemu/typedefs.h"
#include "exec/memory.h"
+#include "hw/qdev-properties.h"
#include "ui/surface.h"
=20
@class PGDeviceDescriptor;
@@ -27,6 +28,12 @@
=20
typedef QTAILQ_HEAD(, PGTask_s) PGTaskList;
=20
+typedef struct AppleGFXDisplayMode {
+ uint16_t width_px;
+ uint16_t height_px;
+ uint16_t refresh_rate_hz;
+} AppleGFXDisplayMode;
+
typedef struct AppleGFXState {
/* Initialised on init/realize() */
MemoryRegion iomem_gfx;
@@ -35,6 +42,8 @@ typedef struct AppleGFXState {
QemuConsole *con;
id<MTLDevice> mtl;
id<MTLCommandQueue> mtl_queue;
+ AppleGFXDisplayMode *display_modes;
+ uint32_t num_display_modes;
=20
/* List `tasks` is protected by task_mutex */
QemuMutex task_mutex;
@@ -62,5 +71,7 @@ void *apple_gfx_host_ptr_for_gpa_range(uint64_t guest_phy=
sical,
uint64_t length, bool read_only,
MemoryRegion **mapping_in_region);
=20
+extern const PropertyInfo qdev_prop_display_mode;
+
#endif
=20
diff --git a/hw/display/apple-gfx.m b/hw/display/apple-gfx.m
index bfaff2b2be2..f83ef497bf8 100644
--- a/hw/display/apple-gfx.m
+++ b/hw/display/apple-gfx.m
@@ -31,9 +31,10 @@
#include "sysemu/dma.h"
#include "ui/console.h"
=20
-static const PGDisplayCoord_t apple_gfx_modes[] =3D {
- { .x =3D 1440, .y =3D 1080 },
- { .x =3D 1280, .y =3D 1024 },
+static const AppleGFXDisplayMode apple_gfx_default_modes[] =3D {
+ { 1920, 1080, 60 },
+ { 1440, 1080, 60 },
+ { 1280, 1024, 60 },
};
=20
static Error *apple_gfx_mig_blocker;
@@ -690,22 +691,24 @@ static void new_frame_handler_bh(void *opaque)
return disp_desc;
}
=20
-static NSArray<PGDisplayMode*>* apple_gfx_prepare_display_mode_array(void)
+static NSArray<PGDisplayMode *> *apple_gfx_create_display_mode_array(
+ const AppleGFXDisplayMode display_modes[], uint32_t display_mode_count)
{
- PGDisplayMode *modes[ARRAY_SIZE(apple_gfx_modes)];
- NSArray<PGDisplayMode*>* mode_array;
- int i;
-
- for (i =3D 0; i < ARRAY_SIZE(apple_gfx_modes); i++) {
- modes[i] =3D
- [[PGDisplayMode alloc] initWithSizeInPixels:apple_gfx_modes[i]=
refreshRateInHz:60.];
- }
-
- mode_array =3D [NSArray arrayWithObjects:modes count:ARRAY_SIZE(apple_=
gfx_modes)];
-
- for (i =3D 0; i < ARRAY_SIZE(apple_gfx_modes); i++) {
- [modes[i] release];
- modes[i] =3D nil;
+ uint32_t i;
+ PGDisplayMode *mode_obj;
+ NSMutableArray<PGDisplayMode *> *mode_array =3D
+ [[NSMutableArray alloc] initWithCapacity:display_mode_count];
+
+ for (i =3D 0; i < display_mode_count; i++) {
+ const AppleGFXDisplayMode *mode =3D &display_modes[i];
+ trace_apple_gfx_display_mode(i, mode->width_px, mode->height_px);
+ PGDisplayCoord_t mode_size =3D { mode->width_px, mode->height_px };
+
+ mode_obj =3D
+ [[PGDisplayMode alloc] initWithSizeInPixels:mode_size
+ refreshRateInHz:mode->refresh_rate=
_hz];
+ [mode_array addObject:mode_obj];
+ [mode_obj release];
}
=20
return mode_array;
@@ -741,6 +744,9 @@ bool apple_gfx_common_realize(AppleGFXState *s, DeviceS=
tate *dev,
PGDeviceDescriptor *desc, Error **errp)
{
PGDisplayDescriptor *disp_desc;
+ const AppleGFXDisplayMode *display_modes =3D apple_gfx_default_modes;
+ uint32_t num_display_modes =3D ARRAY_SIZE(apple_gfx_default_modes);
+ NSArray<PGDisplayMode *> *mode_array;
=20
if (apple_gfx_mig_blocker =3D=3D NULL) {
error_setg(&apple_gfx_mig_blocker,
@@ -776,8 +782,99 @@ bool apple_gfx_common_realize(AppleGFXState *s, Device=
State *dev,
port:0
serialNum:next_pgdisplay_serial_n=
um++];
[disp_desc release];
- s->pgdisp.modeList =3D apple_gfx_prepare_display_mode_array();
+
+ if (s->display_modes !=3D NULL && s->num_display_modes > 0) {
+ trace_apple_gfx_common_realize_modes_property(s->num_display_modes=
);
+ display_modes =3D s->display_modes;
+ num_display_modes =3D s->num_display_modes;
+ }
+ s->pgdisp.modeList =3D mode_array =3D
+ apple_gfx_create_display_mode_array(display_modes, num_display_mod=
es);
+ [mode_array release];
=20
s->con =3D graphic_console_init(dev, 0, &apple_gfx_fb_ops, s);
return true;
}
+
+/* ------ Display mode list device property ------ */
+
+static void apple_gfx_get_display_mode(Object *obj, Visitor *v,
+ const char *name, void *opaque,
+ Error **errp)
+{
+ Property *prop =3D opaque;
+ AppleGFXDisplayMode *mode =3D object_field_prop_ptr(obj, prop);
+ /* 3 uint16s (max 5 digits) + 2 separator characters + nul. */
+ char buffer[5 * 3 + 2 + 1];
+ char *pos =3D buffer;
+
+ int rc =3D snprintf(buffer, sizeof(buffer),
+ "%"PRIu16"x%"PRIu16"@%"PRIu16,
+ mode->width_px, mode->height_px,
+ mode->refresh_rate_hz);
+ assert(rc < sizeof(buffer));
+
+ visit_type_str(v, name, &pos, errp);
+}
+
+static void apple_gfx_set_display_mode(Object *obj, Visitor *v,
+ const char *name, void *opaque,
+ Error **errp)
+{
+ Property *prop =3D opaque;
+ AppleGFXDisplayMode *mode =3D object_field_prop_ptr(obj, prop);
+ const char *endptr;
+ g_autofree char *str =3D NULL;
+ int ret;
+ int val;
+
+ if (!visit_type_str(v, name, &str, errp)) {
+ return;
+ }
+
+ endptr =3D str;
+
+ ret =3D qemu_strtoi(endptr, &endptr, 10, &val);
+ if (ret || val > UINT16_MAX || val <=3D 0) {
+ error_setg(errp, "width in '%s' must be a decimal integer number "
+ "of pixels in the range 1..65535", name);
+ return;
+ }
+ mode->width_px =3D val;
+ if (*endptr !=3D 'x') {
+ goto separator_error;
+ }
+
+ ret =3D qemu_strtoi(endptr + 1, &endptr, 10, &val);
+ if (ret || val > UINT16_MAX || val <=3D 0) {
+ error_setg(errp, "height in '%s' must be a decimal integer number "
+ "of pixels in the range 1..65535", name);
+ return;
+ }
+ mode->height_px =3D val;
+ if (*endptr !=3D '@') {
+ goto separator_error;
+ }
+
+ ret =3D qemu_strtoi(endptr + 1, &endptr, 10, &val);
+ if (ret || val > UINT16_MAX || val <=3D 0) {
+ error_setg(errp, "refresh rate in '%s'"
+ " must be a positive decimal integer (Hertz)", name);
+ return;
+ }
+ mode->refresh_rate_hz =3D val;
+ return;
+
+separator_error:
+ error_setg(errp, "Each display mode takes the format "
+ "'<width>x<height>@<rate>'");
+}
+
+const PropertyInfo qdev_prop_display_mode =3D {
+ .name =3D "display_mode",
+ .description =3D
+ "Display mode in pixels and Hertz, as <width>x<height>@<refresh-ra=
te> "
+ "Example: 3840x2160@60",
+ .get =3D apple_gfx_get_display_mode,
+ .set =3D apple_gfx_set_display_mode,
+};
diff --git a/hw/display/trace-events b/hw/display/trace-events
index a50e4eea0c0..52786e6e184 100644
--- a/hw/display/trace-events
+++ b/hw/display/trace-events
@@ -212,6 +212,8 @@ apple_gfx_cursor_set(uint32_t bpp, uint64_t width, uint=
64_t height) "bpp=3D%d widt
apple_gfx_cursor_show(uint32_t show) "show=3D%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_common_realize_modes_property(uint32_t num_modes) "using %u mode=
s supplied by 'display-modes' device property"
+apple_gfx_display_mode(uint32_t mode_idx, uint16_t width_px, uint16_t heig=
ht_px) "mode %2"PRIu32": %4"PRIu16"x%4"PRIu16
=20
# apple-gfx-mmio.m
apple_gfx_mmio_iosfc_read(uint64_t offset, uint64_t res) "offset=3D0x%"PRI=
x64" res=3D0x%"PRIx64
--=20
2.39.5 (Apple Git-154)