* [PATCH v2 1/3] hw/display/cirrus_vga: Clean up indentation in pci_cirrus_vga_realize()
2022-03-17 8:30 [PATCH v2 0/3] Fix crash when adding a second ISA VGA device Thomas Huth
@ 2022-03-17 8:30 ` Thomas Huth
2022-03-17 8:30 ` [PATCH v2 2/3] hw/display: Allow vga_common_init() to return errors Thomas Huth
2022-03-17 8:30 ` [PATCH v2 3/3] hw/display/vga: Report a proper error when adding a 2nd ISA VGA Thomas Huth
2 siblings, 0 replies; 5+ messages in thread
From: Thomas Huth @ 2022-03-17 8:30 UTC (permalink / raw)
To: qemu-devel; +Cc: Philippe Mathieu-Daudé, Gerd Hoffmann, armbru
Most of the code in this function had been indented with 5 spaces instead
of 4. Since 4 is our preferred style, remove one space in the bad lines here.
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
---
hw/display/cirrus_vga.c | 57 +++++++++++++++++++++--------------------
1 file changed, 29 insertions(+), 28 deletions(-)
diff --git a/hw/display/cirrus_vga.c b/hw/display/cirrus_vga.c
index fdca6ca659..7da1be3e12 100644
--- a/hw/display/cirrus_vga.c
+++ b/hw/display/cirrus_vga.c
@@ -2940,27 +2940,28 @@ void cirrus_init_common(CirrusVGAState *s, Object *owner,
static void pci_cirrus_vga_realize(PCIDevice *dev, Error **errp)
{
- PCICirrusVGAState *d = PCI_CIRRUS_VGA(dev);
- CirrusVGAState *s = &d->cirrus_vga;
- PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(dev);
- int16_t device_id = pc->device_id;
-
- /* follow real hardware, cirrus card emulated has 4 MB video memory.
- Also accept 8 MB/16 MB for backward compatibility. */
- if (s->vga.vram_size_mb != 4 && s->vga.vram_size_mb != 8 &&
- s->vga.vram_size_mb != 16) {
- error_setg(errp, "Invalid cirrus_vga ram size '%u'",
- s->vga.vram_size_mb);
- return;
- }
- /* setup VGA */
- vga_common_init(&s->vga, OBJECT(dev));
- cirrus_init_common(s, OBJECT(dev), device_id, 1, pci_address_space(dev),
- pci_address_space_io(dev));
- s->vga.con = graphic_console_init(DEVICE(dev), 0, s->vga.hw_ops, &s->vga);
-
- /* setup PCI */
+ PCICirrusVGAState *d = PCI_CIRRUS_VGA(dev);
+ CirrusVGAState *s = &d->cirrus_vga;
+ PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(dev);
+ int16_t device_id = pc->device_id;
+
+ /*
+ * Follow real hardware, cirrus card emulated has 4 MB video memory.
+ * Also accept 8 MB/16 MB for backward compatibility.
+ */
+ if (s->vga.vram_size_mb != 4 && s->vga.vram_size_mb != 8 &&
+ s->vga.vram_size_mb != 16) {
+ error_setg(errp, "Invalid cirrus_vga ram size '%u'",
+ s->vga.vram_size_mb);
+ return;
+ }
+ /* setup VGA */
+ vga_common_init(&s->vga, OBJECT(dev));
+ cirrus_init_common(s, OBJECT(dev), device_id, 1, pci_address_space(dev),
+ pci_address_space_io(dev));
+ s->vga.con = graphic_console_init(DEVICE(dev), 0, s->vga.hw_ops, &s->vga);
+ /* setup PCI */
memory_region_init(&s->pci_bar, OBJECT(dev), "cirrus-pci-bar0", 0x2000000);
/* XXX: add byte swapping apertures */
@@ -2968,14 +2969,14 @@ static void pci_cirrus_vga_realize(PCIDevice *dev, Error **errp)
memory_region_add_subregion(&s->pci_bar, 0x1000000,
&s->cirrus_linear_bitblt_io);
- /* setup memory space */
- /* memory #0 LFB */
- /* memory #1 memory-mapped I/O */
- /* XXX: s->vga.vram_size must be a power of two */
- pci_register_bar(&d->dev, 0, PCI_BASE_ADDRESS_MEM_PREFETCH, &s->pci_bar);
- if (device_id == CIRRUS_ID_CLGD5446) {
- pci_register_bar(&d->dev, 1, 0, &s->cirrus_mmio_io);
- }
+ /* setup memory space */
+ /* memory #0 LFB */
+ /* memory #1 memory-mapped I/O */
+ /* XXX: s->vga.vram_size must be a power of two */
+ pci_register_bar(&d->dev, 0, PCI_BASE_ADDRESS_MEM_PREFETCH, &s->pci_bar);
+ if (device_id == CIRRUS_ID_CLGD5446) {
+ pci_register_bar(&d->dev, 1, 0, &s->cirrus_mmio_io);
+ }
}
static Property pci_vga_cirrus_properties[] = {
--
2.27.0
^ permalink raw reply related [flat|nested] 5+ messages in thread* [PATCH v2 2/3] hw/display: Allow vga_common_init() to return errors
2022-03-17 8:30 [PATCH v2 0/3] Fix crash when adding a second ISA VGA device Thomas Huth
2022-03-17 8:30 ` [PATCH v2 1/3] hw/display/cirrus_vga: Clean up indentation in pci_cirrus_vga_realize() Thomas Huth
@ 2022-03-17 8:30 ` Thomas Huth
2022-03-17 11:19 ` Philippe Mathieu-Daudé
2022-03-17 8:30 ` [PATCH v2 3/3] hw/display/vga: Report a proper error when adding a 2nd ISA VGA Thomas Huth
2 siblings, 1 reply; 5+ messages in thread
From: Thomas Huth @ 2022-03-17 8:30 UTC (permalink / raw)
To: qemu-devel; +Cc: Philippe Mathieu-Daudé, Gerd Hoffmann, armbru
The vga_common_init() function currently cannot report errors to its
caller. But in the following patch, we'd need this possibility, so
let's change it to take an "Error **" as parameter for this.
Signed-off-by: Thomas Huth <thuth@redhat.com>
---
hw/display/vga_int.h | 2 +-
hw/display/ati.c | 4 +++-
hw/display/cirrus_vga.c | 4 +++-
hw/display/cirrus_vga_isa.c | 4 +++-
hw/display/qxl.c | 6 +++++-
hw/display/vga-isa.c | 5 ++++-
hw/display/vga-mmio.c | 5 ++++-
hw/display/vga-pci.c | 8 ++++++--
hw/display/vga.c | 11 +++++++++--
hw/display/virtio-vga.c | 4 +++-
hw/display/vmware_vga.c | 2 +-
11 files changed, 42 insertions(+), 13 deletions(-)
diff --git a/hw/display/vga_int.h b/hw/display/vga_int.h
index 847e784ca6..305e700014 100644
--- a/hw/display/vga_int.h
+++ b/hw/display/vga_int.h
@@ -156,7 +156,7 @@ static inline int c6_to_8(int v)
return (v << 2) | (b << 1) | b;
}
-void vga_common_init(VGACommonState *s, Object *obj);
+bool vga_common_init(VGACommonState *s, Object *obj, Error **errp);
void vga_init(VGACommonState *s, Object *obj, MemoryRegion *address_space,
MemoryRegion *address_space_io, bool init_vga_ports);
MemoryRegion *vga_init_io(VGACommonState *s, Object *obj,
diff --git a/hw/display/ati.c b/hw/display/ati.c
index 31f22754dc..6e38e00502 100644
--- a/hw/display/ati.c
+++ b/hw/display/ati.c
@@ -955,7 +955,9 @@ static void ati_vga_realize(PCIDevice *dev, Error **errp)
}
/* init vga bits */
- vga_common_init(vga, OBJECT(s));
+ if (!vga_common_init(vga, OBJECT(s), errp)) {
+ return;
+ }
vga_init(vga, OBJECT(s), pci_address_space(dev),
pci_address_space_io(dev), true);
vga->con = graphic_console_init(DEVICE(s), 0, s->vga.hw_ops, &s->vga);
diff --git a/hw/display/cirrus_vga.c b/hw/display/cirrus_vga.c
index 7da1be3e12..3bb6a58698 100644
--- a/hw/display/cirrus_vga.c
+++ b/hw/display/cirrus_vga.c
@@ -2956,7 +2956,9 @@ static void pci_cirrus_vga_realize(PCIDevice *dev, Error **errp)
return;
}
/* setup VGA */
- vga_common_init(&s->vga, OBJECT(dev));
+ if (!vga_common_init(&s->vga, OBJECT(dev), errp)) {
+ return;
+ }
cirrus_init_common(s, OBJECT(dev), device_id, 1, pci_address_space(dev),
pci_address_space_io(dev));
s->vga.con = graphic_console_init(DEVICE(dev), 0, s->vga.hw_ops, &s->vga);
diff --git a/hw/display/cirrus_vga_isa.c b/hw/display/cirrus_vga_isa.c
index 4f6fb1af3b..96144bd690 100644
--- a/hw/display/cirrus_vga_isa.c
+++ b/hw/display/cirrus_vga_isa.c
@@ -56,7 +56,9 @@ static void isa_cirrus_vga_realizefn(DeviceState *dev, Error **errp)
return;
}
s->global_vmstate = true;
- vga_common_init(s, OBJECT(dev));
+ if (!vga_common_init(s, OBJECT(dev), errp)) {
+ return;
+ }
cirrus_init_common(&d->cirrus_vga, OBJECT(dev), CIRRUS_ID_CLGD5430, 0,
isa_address_space(isadev),
isa_address_space_io(isadev));
diff --git a/hw/display/qxl.c b/hw/display/qxl.c
index 1f9ad31943..adbdbcaeb6 100644
--- a/hw/display/qxl.c
+++ b/hw/display/qxl.c
@@ -2215,7 +2215,11 @@ static void qxl_realize_primary(PCIDevice *dev, Error **errp)
qxl_init_ramsize(qxl);
vga->vbe_size = qxl->vgamem_size;
vga->vram_size_mb = qxl->vga.vram_size / MiB;
- vga_common_init(vga, OBJECT(dev));
+ vga_common_init(vga, OBJECT(dev), &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ return;
+ }
vga_init(vga, OBJECT(dev),
pci_address_space(dev), pci_address_space_io(dev), false);
portio_list_init(&qxl->vga_port_list, OBJECT(dev), qxl_vga_portio_list,
diff --git a/hw/display/vga-isa.c b/hw/display/vga-isa.c
index 90851e730b..46abbc5653 100644
--- a/hw/display/vga-isa.c
+++ b/hw/display/vga-isa.c
@@ -62,7 +62,10 @@ static void vga_isa_realizefn(DeviceState *dev, Error **errp)
const MemoryRegionPortio *vga_ports, *vbe_ports;
s->global_vmstate = true;
- vga_common_init(s, OBJECT(dev));
+ if (!vga_common_init(s, OBJECT(dev), errp)) {
+ return;
+ }
+
s->legacy_address_space = isa_address_space(isadev);
vga_io_memory = vga_init_io(s, OBJECT(dev), &vga_ports, &vbe_ports);
isa_register_portio_list(isadev, &d->portio_vga,
diff --git a/hw/display/vga-mmio.c b/hw/display/vga-mmio.c
index 4969368081..75dfcedea5 100644
--- a/hw/display/vga-mmio.c
+++ b/hw/display/vga-mmio.c
@@ -102,7 +102,10 @@ static void vga_mmio_realizefn(DeviceState *dev, Error **errp)
s->vga.bank_offset = 0;
s->vga.global_vmstate = true;
- vga_common_init(&s->vga, OBJECT(dev));
+ if (!vga_common_init(&s->vga, OBJECT(dev), errp)) {
+ return;
+ }
+
sysbus_init_mmio(sbd, &s->vga.vram);
s->vga.con = graphic_console_init(dev, 0, s->vga.hw_ops, &s->vga);
}
diff --git a/hw/display/vga-pci.c b/hw/display/vga-pci.c
index 62fb5c38c1..3e5bc259f7 100644
--- a/hw/display/vga-pci.c
+++ b/hw/display/vga-pci.c
@@ -239,7 +239,9 @@ static void pci_std_vga_realize(PCIDevice *dev, Error **errp)
bool edid = false;
/* vga + console init */
- vga_common_init(s, OBJECT(dev));
+ if (!vga_common_init(s, OBJECT(dev), errp)) {
+ return;
+ }
vga_init(s, OBJECT(dev), pci_address_space(dev), pci_address_space_io(dev),
true);
@@ -275,7 +277,9 @@ static void pci_secondary_vga_realize(PCIDevice *dev, Error **errp)
bool edid = false;
/* vga + console init */
- vga_common_init(s, OBJECT(dev));
+ if (!vga_common_init(s, OBJECT(dev), errp)) {
+ return;
+ }
s->con = graphic_console_init(DEVICE(dev), 0, s->hw_ops, s);
/* mmio bar */
diff --git a/hw/display/vga.c b/hw/display/vga.c
index 9d1f66af40..ae96023596 100644
--- a/hw/display/vga.c
+++ b/hw/display/vga.c
@@ -2168,9 +2168,10 @@ static inline uint32_t uint_clamp(uint32_t val, uint32_t vmin, uint32_t vmax)
return val;
}
-void vga_common_init(VGACommonState *s, Object *obj)
+bool vga_common_init(VGACommonState *s, Object *obj, Error **errp)
{
int i, j, v, b;
+ Error *local_err = NULL;
for(i = 0;i < 256; i++) {
v = 0;
@@ -2206,7 +2207,11 @@ void vga_common_init(VGACommonState *s, Object *obj)
s->is_vbe_vmstate = 1;
memory_region_init_ram_nomigrate(&s->vram, obj, "vga.vram", s->vram_size,
- &error_fatal);
+ &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ return false;
+ }
vmstate_register_ram(&s->vram, s->global_vmstate ? NULL : DEVICE(obj));
xen_register_framebuffer(&s->vram);
s->vram_ptr = memory_region_get_ram_ptr(&s->vram);
@@ -2237,6 +2242,8 @@ void vga_common_init(VGACommonState *s, Object *obj)
s->default_endian_fb = false;
#endif
vga_dirty_log_start(s);
+
+ return true;
}
static const MemoryRegionPortio vga_portio_list[] = {
diff --git a/hw/display/virtio-vga.c b/hw/display/virtio-vga.c
index 5a2f7a4540..7b55c8d0e7 100644
--- a/hw/display/virtio-vga.c
+++ b/hw/display/virtio-vga.c
@@ -108,7 +108,9 @@ static void virtio_vga_base_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
/* init vga compat bits */
vga->vram_size_mb = 8;
- vga_common_init(vga, OBJECT(vpci_dev));
+ if (!vga_common_init(vga, OBJECT(vpci_dev), errp)) {
+ return;
+ }
vga_init(vga, OBJECT(vpci_dev), pci_address_space(&vpci_dev->pci_dev),
pci_address_space_io(&vpci_dev->pci_dev), true);
pci_register_bar(&vpci_dev->pci_dev, 0,
diff --git a/hw/display/vmware_vga.c b/hw/display/vmware_vga.c
index 0cc43a1f15..98c83474ad 100644
--- a/hw/display/vmware_vga.c
+++ b/hw/display/vmware_vga.c
@@ -1254,7 +1254,7 @@ static void vmsvga_init(DeviceState *dev, struct vmsvga_state_s *s,
&error_fatal);
s->fifo_ptr = memory_region_get_ram_ptr(&s->fifo_ram);
- vga_common_init(&s->vga, OBJECT(dev));
+ vga_common_init(&s->vga, OBJECT(dev), &error_fatal);
vga_init(&s->vga, OBJECT(dev), address_space, io, true);
vmstate_register(NULL, 0, &vmstate_vga_common, &s->vga);
s->new_depth = 32;
--
2.27.0
^ permalink raw reply related [flat|nested] 5+ messages in thread