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[Qemu-devel] [PATCH v3 1/4] vga: make PCI devices optional
From: |
Blue Swirl |
Subject: |
[Qemu-devel] [PATCH v3 1/4] vga: make PCI devices optional |
Date: |
Sun, 16 Oct 2011 21:21:02 +0000 |
Improve VGA selection logic, push check for device availabilty to vl.c.
Make PCI VGA devices optional.
Signed-off-by: Blue Swirl <address@hidden>
---
hw/cirrus_vga.c | 5 -----
hw/pc.c | 6 +-----
hw/pc.h | 33 +++++++++++++++++++++++++++------
hw/pci.c | 18 ++++++++++++++++++
hw/pci.h | 4 ++++
hw/qdev.c | 5 +++++
hw/qdev.h | 1 +
hw/vga-pci.c | 6 ------
vl.c | 33 +++++++++++++++++++++++++++------
9 files changed, 83 insertions(+), 28 deletions(-)
diff --git a/hw/cirrus_vga.c b/hw/cirrus_vga.c
index c7e365b..a11444c 100644
--- a/hw/cirrus_vga.c
+++ b/hw/cirrus_vga.c
@@ -2955,11 +2955,6 @@ static int pci_cirrus_vga_initfn(PCIDevice *dev)
return 0;
}
-void pci_cirrus_vga_init(PCIBus *bus)
-{
- pci_create_simple(bus, -1, "cirrus-vga");
-}
-
static PCIDeviceInfo cirrus_vga_info = {
.qdev.name = "cirrus-vga",
.qdev.desc = "Cirrus CLGD 54xx VGA",
diff --git a/hw/pc.c b/hw/pc.c
index f0802b7..057eb9c 100644
--- a/hw/pc.c
+++ b/hw/pc.c
@@ -1080,11 +1080,7 @@ void pc_vga_init(PCIBus *pci_bus)
}
} else if (vmsvga_enabled) {
if (pci_bus) {
- if (!pci_vmsvga_init(pci_bus)) {
- fprintf(stderr, "Warning: vmware_vga not available,"
- " using standard VGA instead\n");
- pci_vga_init(pci_bus);
- }
+ pci_vmsvga_init(pci_bus);
} else {
fprintf(stderr, "%s: vmware_vga: no PCI bus\n", __FUNCTION__);
}
diff --git a/hw/pc.h b/hw/pc.h
index b8ad9a3..6c951e8 100644
--- a/hw/pc.h
+++ b/hw/pc.h
@@ -9,6 +9,7 @@
#include "net.h"
#include "memory.h"
#include "ioapic.h"
+#include "pci.h"
/* PC-style peripherals (also used by other machines). */
@@ -203,26 +204,46 @@ enum vga_retrace_method {
extern enum vga_retrace_method vga_retrace_method;
-static inline int isa_vga_init(void)
+static inline bool isa_vga_init(void)
{
ISADevice *dev;
dev = isa_try_create("isa-vga");
if (!dev) {
- fprintf(stderr, "Warning: isa-vga not available\n");
- return 0;
+ return false;
}
qdev_init_nofail(&dev->qdev);
- return 1;
+ return true;
+}
+
+/* vga-pci.c */
+static inline bool pci_vga_init(PCIBus *bus)
+{
+ PCIDevice *dev;
+
+ dev = pci_try_create_simple(bus, -1, "VGA");
+ if (!dev) {
+ return false;
+ }
+ return true;
}
-int pci_vga_init(PCIBus *bus);
int isa_vga_mm_init(target_phys_addr_t vram_base,
target_phys_addr_t ctrl_base, int it_shift,
MemoryRegion *address_space);
/* cirrus_vga.c */
-void pci_cirrus_vga_init(PCIBus *bus);
+static inline bool pci_cirrus_vga_init(PCIBus *bus)
+{
+ PCIDevice *dev;
+
+ dev = pci_try_create_simple(bus, -1, "cirrus-vga");
+ if (!dev) {
+ return false;
+ }
+ return true;
+}
+
void isa_cirrus_vga_init(MemoryRegion *address_space);
/* ne2000.c */
diff --git a/hw/pci.c b/hw/pci.c
index 749e8d8..46c01ac 100644
--- a/hw/pci.c
+++ b/hw/pci.c
@@ -1687,6 +1687,19 @@ PCIDevice
*pci_create_simple_multifunction(PCIBus *bus, int devfn,
return dev;
}
+PCIDevice *pci_try_create_simple_multifunction(PCIBus *bus, int devfn,
+ bool multifunction,
+ const char *name)
+{
+ PCIDevice *dev = pci_try_create_multifunction(bus, devfn, multifunction,
+ name);
+ if (!dev) {
+ return NULL;
+ }
+ qdev_init_nofail(&dev->qdev);
+ return dev;
+}
+
PCIDevice *pci_create(PCIBus *bus, int devfn, const char *name)
{
return pci_create_multifunction(bus, devfn, false, name);
@@ -1702,6 +1715,11 @@ PCIDevice *pci_try_create(PCIBus *bus, int
devfn, const char *name)
return pci_try_create_multifunction(bus, devfn, false, name);
}
+PCIDevice *pci_try_create_simple(PCIBus *bus, int devfn, const char *name)
+{
+ return pci_try_create_simple_multifunction(bus, devfn, false, name);
+}
+
static int pci_find_space(PCIDevice *pdev, uint8_t size)
{
int config_size = pci_config_size(pdev);
diff --git a/hw/pci.h b/hw/pci.h
index 86a81c8..aa2e040 100644
--- a/hw/pci.h
+++ b/hw/pci.h
@@ -473,9 +473,13 @@ PCIDevice *pci_create_simple_multifunction(PCIBus
*bus, int devfn,
PCIDevice *pci_try_create_multifunction(PCIBus *bus, int devfn,
bool multifunction,
const char *name);
+PCIDevice *pci_try_create_simple_multifunction(PCIBus *bus, int devfn,
+ bool multifunction,
+ const char *name);
PCIDevice *pci_create(PCIBus *bus, int devfn, const char *name);
PCIDevice *pci_create_simple(PCIBus *bus, int devfn, const char *name);
PCIDevice *pci_try_create(PCIBus *bus, int devfn, const char *name);
+PCIDevice *pci_try_create_simple(PCIBus *bus, int devfn, const char *name);
static inline int pci_is_express(const PCIDevice *d)
{
diff --git a/hw/qdev.c b/hw/qdev.c
index a223d41..dc0aa1c 100644
--- a/hw/qdev.c
+++ b/hw/qdev.c
@@ -80,6 +80,11 @@ static DeviceInfo *qdev_find_info(BusInfo
*bus_info, const char *name)
return NULL;
}
+bool qdev_exists(const char *name)
+{
+ return !!qdev_find_info(NULL, name);
+}
+
static DeviceState *qdev_create_from_info(BusState *bus, DeviceInfo *info)
{
DeviceState *dev;
diff --git a/hw/qdev.h b/hw/qdev.h
index aa7ae36..a53ccb1 100644
--- a/hw/qdev.h
+++ b/hw/qdev.h
@@ -123,6 +123,7 @@ typedef struct GlobalProperty {
DeviceState *qdev_create(BusState *bus, const char *name);
DeviceState *qdev_try_create(BusState *bus, const char *name);
+bool qdev_exists(const char *name);
int qdev_device_help(QemuOpts *opts);
DeviceState *qdev_device_add(QemuOpts *opts);
int qdev_init(DeviceState *dev) QEMU_WARN_UNUSED_RESULT;
diff --git a/hw/vga-pci.c b/hw/vga-pci.c
index 14bfadb..68fddd9 100644
--- a/hw/vga-pci.c
+++ b/hw/vga-pci.c
@@ -70,12 +70,6 @@ static int pci_vga_initfn(PCIDevice *dev)
return 0;
}
-int pci_vga_init(PCIBus *bus)
-{
- pci_create_simple(bus, -1, "VGA");
- return 0;
-}
-
static PCIDeviceInfo vga_info = {
.qdev.name = "VGA",
.qdev.size = sizeof(PCIVGAState),
diff --git a/vl.c b/vl.c
index 2dce3ae..15fb0d1 100644
--- a/vl.c
+++ b/vl.c
@@ -1654,11 +1654,26 @@ static void select_vgahw (const char *p)
default_vga = 0;
vga_interface_type = VGA_NONE;
if (strstart(p, "std", &opts)) {
- vga_interface_type = VGA_STD;
+ if (qdev_exists("VGA") || qdev_exists("isa-vga")) {
+ vga_interface_type = VGA_STD;
+ } else {
+ fprintf(stderr, "Error: standard VGA not available\n");
+ exit(0);
+ }
} else if (strstart(p, "cirrus", &opts)) {
- vga_interface_type = VGA_CIRRUS;
+ if (qdev_exists("cirrus-vga") || qdev_exists("isa-cirrus-vga")) {
+ vga_interface_type = VGA_CIRRUS;
+ } else {
+ fprintf(stderr, "Error: Cirrus VGA not available\n");
+ exit(0);
+ }
} else if (strstart(p, "vmware", &opts)) {
- vga_interface_type = VGA_VMWARE;
+ if (qdev_exists("vmware-svga")) {
+ vga_interface_type = VGA_VMWARE;
+ } else {
+ fprintf(stderr, "Error: VMWare SVGA not available\n");
+ exit(0);
+ }
} else if (strstart(p, "xenfb", &opts)) {
vga_interface_type = VGA_XENFB;
} else if (strstart(p, "qxl", &opts)) {
@@ -2277,6 +2292,7 @@ int main(int argc, char **argv, char **envp)
const char *loadvm = NULL;
QEMUMachine *machine;
const char *cpu_model;
+ const char *vga_model = NULL;
const char *pid_file = NULL;
const char *incoming = NULL;
#ifdef CONFIG_VNC
@@ -2694,7 +2710,7 @@ int main(int argc, char **argv, char **envp)
rtc_utc = 0;
break;
case QEMU_OPTION_vga:
- select_vgahw (optarg);
+ vga_model = optarg;
break;
case QEMU_OPTION_g:
{
@@ -3252,8 +3268,6 @@ int main(int argc, char **argv, char **envp)
if (default_virtcon)
add_device_config(DEV_VIRTCON, "vc:80Cx24C");
}
- if (default_vga)
- vga_interface_type = VGA_CIRRUS;
socket_init();
@@ -3398,6 +3412,13 @@ int main(int argc, char **argv, char **envp)
module_call_init(MODULE_INIT_DEVICE);
+ /* must be after qdev registration but before machine init */
+ if (vga_model) {
+ select_vgahw(vga_model);
+ } else if (default_vga) {
+ select_vgahw("cirrus");
+ }
+
if (qemu_opts_foreach(qemu_find_opts("device"), device_help_func,
NULL, 0) != 0)
exit(0);
--
1.6.2.4
0001-vga-make-PCI-devices-optional.patch
Description: Text Data
- [Qemu-devel] [PATCH v3 1/4] vga: make PCI devices optional,
Blue Swirl <=