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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH 1/2] Disable xen platform PCI device when xen_platform_pci=0 is specified
This patch is the xen side of the series.
- Change guest firmware to use new fixed byte port 0x10.
- Add "xen_platform_pci" option into guest config file and APIs.
xen_platform_pci=0: Disable xen platform device.
xen_platform_pci=1: Enable xen platform device. (default)
- Add "disable_pf" entry into xenstore.
Thanks,
--
Yuji Shimada
Signed-off-by: Yuji Shimada <shimada-yxb@xxxxxxxxxxxxxxx>
diff -r 92a6cc5eae2e tools/examples/xmexample.hvm
--- a/tools/examples/xmexample.hvm Tue Mar 17 15:29:57 2009 +0000
+++ b/tools/examples/xmexample.hvm Wed Mar 18 15:35:45 2009 +0900
@@ -225,6 +225,10 @@
#keymap='ja'
#-----------------------------------------------------------------------------
+# Enable/disable xen platform PCI device, default=1 (enabled)
+#xen_platform_pci=1
+
+#-----------------------------------------------------------------------------
# Configure guest CPUID responses:
#
#cpuid=[ '1:ecx=xxxxxxxxxxx00xxxxxxxxxxxxxxxxxxx,
diff -r 92a6cc5eae2e tools/firmware/hvmloader/config.h
--- a/tools/firmware/hvmloader/config.h Tue Mar 17 15:29:57 2009 +0000
+++ b/tools/firmware/hvmloader/config.h Wed Mar 18 15:35:45 2009 +0900
@@ -56,9 +56,7 @@
uint8_t hpet_present:1; /* 0[2] - System has HPET? */
uint32_t pci_min, pci_len; /* 4, 8 - PCI I/O hole boundaries */
uint32_t bios32_entry; /* 12 - Entry point for 32-bit BIOS */
- uint16_t xen_pfiob; /* 16 - Xen platform device I/O ports */
};
#define BIOSINFO_OFF_bios32_entry 12
-#define BIOSINFO_OFF_xen_pfiob 16
#endif /* __HVMLOADER_CONFIG_H__ */
diff -r 92a6cc5eae2e tools/firmware/hvmloader/hvmloader.c
--- a/tools/firmware/hvmloader/hvmloader.c Tue Mar 17 15:29:57 2009 +0000
+++ b/tools/firmware/hvmloader/hvmloader.c Wed Mar 18 15:35:45 2009 +0900
@@ -539,25 +539,6 @@
cmos_outb(0x35, (uint8_t)( alt_mem >> 8));
}
-static uint16_t xen_platform_io_base(void)
-{
- uint32_t devfn, bar_data;
- uint16_t vendor_id, device_id;
-
- for ( devfn = 0; devfn < 128; devfn++ )
- {
- vendor_id = pci_readw(devfn, PCI_VENDOR_ID);
- device_id = pci_readw(devfn, PCI_DEVICE_ID);
- if ( (vendor_id == 0x5853) && (device_id == 0x0001) )
- {
- bar_data = pci_readl(devfn, PCI_BASE_ADDRESS_0);
- return bar_data & PCI_BASE_ADDRESS_IO_MASK;
- }
- }
-
- return 0;
-}
-
/*
* Set up an empty TSS area for virtual 8086 mode to use.
* The only important thing is that it musn't have any bits set
@@ -744,7 +725,6 @@
bios_info->pci_min = pci_mem_start;
bios_info->pci_len = pci_mem_end - pci_mem_start;
bios_info->bios32_entry = bios32_addr;
- bios_info->xen_pfiob = xen_platform_io_base();
printf("Invoking ROMBIOS ...\n");
return 0;
diff -r 92a6cc5eae2e tools/firmware/rombios/rombios.c
--- a/tools/firmware/rombios/rombios.c Tue Mar 17 15:29:57 2009 +0000
+++ b/tools/firmware/rombios/rombios.c Wed Mar 18 15:35:45 2009 +0900
@@ -1418,24 +1418,14 @@
write_word(0x40, 0x13, base_mem >> 10);
}
-ASM_START
-_rom_write_access_control:
- push ds
- mov ax,#(BIOS_INFO_PHYSICAL_ADDRESS >> 4)
- mov ds,ax
- mov ax,[BIOSINFO_OFF_xen_pfiob]
- pop ds
- ret
-ASM_END
-
void enable_rom_write_access()
{
- outb(rom_write_access_control(), 0);
+ outb(0x10, 0);
}
void disable_rom_write_access()
{
- outb(rom_write_access_control(), PFFLAG_ROM_LOCK);
+ outb(0x10, PFFLAG_ROM_LOCK);
}
#endif /* HVMASSIST */
diff -r 92a6cc5eae2e tools/python/xen/xend/XendConfig.py
--- a/tools/python/xen/xend/XendConfig.py Tue Mar 17 15:29:57 2009 +0000
+++ b/tools/python/xen/xend/XendConfig.py Wed Mar 18 15:35:45 2009 +0900
@@ -170,6 +170,7 @@
'xen_extended_power_mgmt': int,
'pci_msitranslate': int,
'pci_power_mgmt': int,
+ 'xen_platform_pci': int,
}
# Xen API console 'other_config' keys.
@@ -464,6 +465,8 @@
self['platform']['rtc_timeoffset'] = 0
if 'hpet' not in self['platform']:
self['platform']['hpet'] = 0
+ if 'xen_platform_pci' not in self['platform']:
+ self['platform']['xen_platform_pci'] = 1
if 'vpt_align' not in self['platform']:
self['platform']['vpt_align'] = 1
if 'loader' not in self['platform']:
diff -r 92a6cc5eae2e tools/python/xen/xend/image.py
--- a/tools/python/xen/xend/image.py Tue Mar 17 15:29:57 2009 +0000
+++ b/tools/python/xen/xend/image.py Wed Mar 18 15:35:45 2009 +0900
@@ -716,6 +716,7 @@
if 'hvm' not in info['xen_caps']:
raise HVMRequired()
+ xen_platform_pci = int(vmConfig['platform'].get('xen_platform_pci',1))
rtc_timeoffset = vmConfig['platform'].get('rtc_timeoffset')
if not self.display :
@@ -724,13 +725,23 @@
("image/device-model", self.device_model),
("image/display", self.display))
self.vm.permissionsVm("image/dmargs", { 'dom': self.vm.getDomid(),
'read': True } )
+
+ if xen_platform_pci == 0:
+ disable_pf = 1
+ log.info("No need to create platform device.[domid:%d]",
self.vm.getDomid())
+ else:
+ disable_pf = 0
+ log.info("Need to create platform device.[domid:%d]",
self.vm.getDomid())
+
+ xstransact.Store("/local/domain/0/device-model/%i"%self.vm.getDomid(),
+ ('disable_pf', disable_pf))
self.vm.storeVm(("rtc/timeoffset", rtc_timeoffset))
self.vm.permissionsVm("rtc/timeoffset", { 'dom': self.vm.getDomid(),
'read': True } )
self.apic = int(vmConfig['platform'].get('apic', 0))
self.acpi = int(vmConfig['platform'].get('acpi', 0))
self.guest_os_type = vmConfig['platform'].get('guest_os_type')
-
+
# Return a list of cmd line args to the device models based on the
# xm config file
diff -r 92a6cc5eae2e tools/python/xen/xm/create.py
--- a/tools/python/xen/xm/create.py Tue Mar 17 15:29:57 2009 +0000
+++ b/tools/python/xen/xm/create.py Wed Mar 18 15:35:45 2009 +0900
@@ -611,6 +611,10 @@
fn=set_int, default=0,
use="""Global PCI Power Management flag (0=disable;1=enable).""")
+gopts.var('xen_platform_pci', val='0|1',
+ fn=set_int, default=1,
+ use="Is xen_platform_pci used?")
+
def err(msg):
"""Print an error to stderr and exit.
"""
@@ -921,7 +925,7 @@
'acpi', 'apic', 'usb', 'usbdevice', 'keymap', 'pci', 'hpet',
'guest_os_type', 'hap', 'opengl', 'cpuid', 'cpuid_check',
'viridian', 'xen_extended_power_mgmt', 'pci_msitranslate',
- 'vpt_align', 'pci_power_mgmt' ]
+ 'vpt_align', 'pci_power_mgmt', 'xen_platform_pci' ]
for a in args:
if a in vals.__dict__ and vals.__dict__[a] is not None:
diff -r 92a6cc5eae2e tools/python/xen/xm/xenapi_create.py
--- a/tools/python/xen/xm/xenapi_create.py Tue Mar 17 15:29:57 2009 +0000
+++ b/tools/python/xen/xm/xenapi_create.py Wed Mar 18 15:35:45 2009 +0900
@@ -1048,6 +1048,7 @@
'hap',
'pci_msitranslate',
'pci_power_mgmt',
+ 'xen_platform_pci',
]
platform_configs = []
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