diff mbox

[v3,4/5] xen, gfx passthrough: create host bridge to passthrough

Message ID 1401097389-4255-5-git-send-email-tiejun.chen@intel.com
State New
Headers show

Commit Message

Tiejun Chen May 26, 2014, 9:43 a.m. UTC 
Implement that pci host bridge to specific to passthrough. Actually
thsi just inherit the standard one.

Signed-off-by: Tiejun Chen <tiejun.chen@intel.com>
---
v3:

* Just fix this patch head description typo.

v2:

* New patch.

 hw/pci-host/piix.c | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 54 insertions(+), 2 deletions(-)

Comments

Konrad Rzeszutek Wilk May 27, 2014, 2:48 p.m. UTC | #1 
On Mon, May 26, 2014 at 05:43:08PM +0800, Tiejun Chen wrote:
> Implement that pci host bridge to specific to passthrough. Actually
> thsi just inherit the standard one.

s/thsi/this

> 
> Signed-off-by: Tiejun Chen <tiejun.chen@intel.com>
> ---
> v3:
> 
> * Just fix this patch head description typo.
> 
> v2:
> 
> * New patch.
> 
>  hw/pci-host/piix.c | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++++--
>  1 file changed, 54 insertions(+), 2 deletions(-)
> 
> diff --git a/hw/pci-host/piix.c b/hw/pci-host/piix.c
> index ffdc853..8b11953 100644
> --- a/hw/pci-host/piix.c
> +++ b/hw/pci-host/piix.c
> @@ -34,6 +34,7 @@
>  #include "sysemu/sysemu.h"
>  #include "hw/i386/ioapic.h"
>  #include "qapi/visitor.h"
> +#include "hw/xen/xen_pt.h"
>  
>  /*
>   * I440FX chipset data sheet.
> @@ -95,6 +96,10 @@ typedef struct PIIX3State {
>  #define I440FX_PCI_DEVICE(obj) \
>      OBJECT_CHECK(PCII440FXState, (obj), TYPE_I440FX_PCI_DEVICE)
>  
> +#define TYPE_I440FX_XEN_PCI_DEVICE "i440FX-xen"
> +#define I440FX_XEN_PCI_DEVICE(obj) \
> +    OBJECT_CHECK(PCII440FXState, (obj), TYPE_I440FX_XEN_PCI_DEVICE)
> +
>  struct PCII440FXState {
>      /*< private >*/
>      PCIDevice parent_obj;
> @@ -305,6 +310,16 @@ static int i440fx_initfn(PCIDevice *dev)
>      return 0;
>  }
>  
> +static int i440fx_xen_initfn(PCIDevice *dev)
> +{
> +    PCII440FXState *d = I440FX_XEN_PCI_DEVICE(dev);
> +
> +    dev->config[I440FX_SMRAM] = 0x02;
> +
> +    cpu_smm_register(&i440fx_set_smm, d);
> +    return 0;
> +}
> +
>  PCIBus *i440fx_init(PCII440FXState **pi440fx_state,
>                      int *piix3_devfn,
>                      ISABus **isa_bus, qemu_irq *pic,
> @@ -333,8 +348,15 @@ PCIBus *i440fx_init(PCII440FXState **pi440fx_state,
>      object_property_add_child(qdev_get_machine(), "i440fx", OBJECT(dev), NULL);
>      qdev_init_nofail(dev);
>  
> -    d = pci_create_simple(b, 0, TYPE_I440FX_PCI_DEVICE);
> -    *pi440fx_state = I440FX_PCI_DEVICE(d);
> +    if (xen_enabled()) {
> +        d = pci_create_simple(b, 0, TYPE_I440FX_XEN_PCI_DEVICE);
> +        *pi440fx_state = I440FX_XEN_PCI_DEVICE(d);
> +        pci_create_pch(b);
> +    } else {
> +        d = pci_create_simple(b, 0, TYPE_I440FX_PCI_DEVICE);
> +        *pi440fx_state = I440FX_PCI_DEVICE(d);
> +    }
> +
>      f = *pi440fx_state;
>      f->system_memory = address_space_mem;
>      f->pci_address_space = pci_address_space;
> @@ -705,6 +727,35 @@ static const TypeInfo i440fx_info = {
>      .class_init    = i440fx_class_init,
>  };
>  
> +static void i440fx_xen_class_init(ObjectClass *klass, void *data)
> +{
> +    DeviceClass *dc = DEVICE_CLASS(klass);
> +    PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
> +
> +    k->init = i440fx_xen_initfn;
> +    k->config_write = igd_pci_write;
> +    k->config_read = igd_pci_read;
> +    k->vendor_id = PCI_VENDOR_ID_INTEL;
> +    k->device_id = PCI_DEVICE_ID_INTEL_82441;
> +    k->revision = 0x02;
> +    k->class_id = PCI_CLASS_BRIDGE_ISA;
> +    dc->desc = "XEN Host bridge";
> +    dc->vmsd = &vmstate_i440fx;
> +    /*
> +     * PCI-facing part of the host bridge, not usable without the
> +     * host-facing part, which can't be device_add'ed, yet.
> +     */
> +    dc->cannot_instantiate_with_device_add_yet = true;
> +    dc->hotpluggable   = false;
> +}
> +
> +static const TypeInfo i440fx_xen_info = {
> +    .name          = TYPE_I440FX_XEN_PCI_DEVICE,
> +    .parent        = TYPE_PCI_DEVICE,
> +    .instance_size = sizeof(PCII440FXState),
> +    .class_init    = i440fx_xen_class_init,
> +};
> +
>  static const char *i440fx_pcihost_root_bus_path(PCIHostState *host_bridge,
>                                                  PCIBus *rootbus)
>  {
> @@ -746,6 +797,7 @@ static const TypeInfo i440fx_pcihost_info = {
>  static void i440fx_register_types(void)
>  {
>      type_register_static(&i440fx_info);
> +    type_register_static(&i440fx_xen_info);
>      type_register_static(&piix3_info);
>      type_register_static(&piix3_xen_info);
>      type_register_static(&i440fx_pcihost_info);
> -- 
> 1.9.1
> 
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xen.org
> http://lists.xen.org/xen-devel
Stefano Stabellini May 27, 2014, 6:04 p.m. UTC | #2 
On Mon, 26 May 2014, Tiejun Chen wrote:
> Implement that pci host bridge to specific to passthrough. Actually
> thsi just inherit the standard one.
> 
> Signed-off-by: Tiejun Chen <tiejun.chen@intel.com>
> ---
> v3:
> 
> * Just fix this patch head description typo.
> 
> v2:
> 
> * New patch.
> 
>  hw/pci-host/piix.c | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++++--
>  1 file changed, 54 insertions(+), 2 deletions(-)
> 
> diff --git a/hw/pci-host/piix.c b/hw/pci-host/piix.c
> index ffdc853..8b11953 100644
> --- a/hw/pci-host/piix.c
> +++ b/hw/pci-host/piix.c
> @@ -34,6 +34,7 @@
>  #include "sysemu/sysemu.h"
>  #include "hw/i386/ioapic.h"
>  #include "qapi/visitor.h"
> +#include "hw/xen/xen_pt.h"
>  
>  /*
>   * I440FX chipset data sheet.
> @@ -95,6 +96,10 @@ typedef struct PIIX3State {
>  #define I440FX_PCI_DEVICE(obj) \
>      OBJECT_CHECK(PCII440FXState, (obj), TYPE_I440FX_PCI_DEVICE)
>  
> +#define TYPE_I440FX_XEN_PCI_DEVICE "i440FX-xen"
> +#define I440FX_XEN_PCI_DEVICE(obj) \
> +    OBJECT_CHECK(PCII440FXState, (obj), TYPE_I440FX_XEN_PCI_DEVICE)
> +
>  struct PCII440FXState {
>      /*< private >*/
>      PCIDevice parent_obj;
> @@ -305,6 +310,16 @@ static int i440fx_initfn(PCIDevice *dev)
>      return 0;
>  }
>  
> +static int i440fx_xen_initfn(PCIDevice *dev)
> +{
> +    PCII440FXState *d = I440FX_XEN_PCI_DEVICE(dev);
> +
> +    dev->config[I440FX_SMRAM] = 0x02;
> +
> +    cpu_smm_register(&i440fx_set_smm, d);
> +    return 0;
> +}
> +
>  PCIBus *i440fx_init(PCII440FXState **pi440fx_state,
>                      int *piix3_devfn,
>                      ISABus **isa_bus, qemu_irq *pic,
> @@ -333,8 +348,15 @@ PCIBus *i440fx_init(PCII440FXState **pi440fx_state,
>      object_property_add_child(qdev_get_machine(), "i440fx", OBJECT(dev), NULL);
>      qdev_init_nofail(dev);
>  
> -    d = pci_create_simple(b, 0, TYPE_I440FX_PCI_DEVICE);
> -    *pi440fx_state = I440FX_PCI_DEVICE(d);
> +    if (xen_enabled()) {

if (xen_enabled() && xen_has_gfx_passthru) ?


> +        d = pci_create_simple(b, 0, TYPE_I440FX_XEN_PCI_DEVICE);
> +        *pi440fx_state = I440FX_XEN_PCI_DEVICE(d);
> +        pci_create_pch(b);
> +    } else {
> +        d = pci_create_simple(b, 0, TYPE_I440FX_PCI_DEVICE);
> +        *pi440fx_state = I440FX_PCI_DEVICE(d);
> +    }
> +
>      f = *pi440fx_state;
>      f->system_memory = address_space_mem;
>      f->pci_address_space = pci_address_space;
> @@ -705,6 +727,35 @@ static const TypeInfo i440fx_info = {
>      .class_init    = i440fx_class_init,
>  };
>  
> +static void i440fx_xen_class_init(ObjectClass *klass, void *data)
> +{
> +    DeviceClass *dc = DEVICE_CLASS(klass);
> +    PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
> +
> +    k->init = i440fx_xen_initfn;
> +    k->config_write = igd_pci_write;
> +    k->config_read = igd_pci_read;
> +    k->vendor_id = PCI_VENDOR_ID_INTEL;
> +    k->device_id = PCI_DEVICE_ID_INTEL_82441;
> +    k->revision = 0x02;
> +    k->class_id = PCI_CLASS_BRIDGE_ISA;
> +    dc->desc = "XEN Host bridge";
> +    dc->vmsd = &vmstate_i440fx;
> +    /*
> +     * PCI-facing part of the host bridge, not usable without the
> +     * host-facing part, which can't be device_add'ed, yet.
> +     */
> +    dc->cannot_instantiate_with_device_add_yet = true;
> +    dc->hotpluggable   = false;
> +}
> +
> +static const TypeInfo i440fx_xen_info = {
> +    .name          = TYPE_I440FX_XEN_PCI_DEVICE,
> +    .parent        = TYPE_PCI_DEVICE,
> +    .instance_size = sizeof(PCII440FXState),
> +    .class_init    = i440fx_xen_class_init,
> +};
> +
>  static const char *i440fx_pcihost_root_bus_path(PCIHostState *host_bridge,
>                                                  PCIBus *rootbus)
>  {
> @@ -746,6 +797,7 @@ static const TypeInfo i440fx_pcihost_info = {
>  static void i440fx_register_types(void)
>  {
>      type_register_static(&i440fx_info);
> +    type_register_static(&i440fx_xen_info);
>      type_register_static(&piix3_info);
>      type_register_static(&piix3_xen_info);
>      type_register_static(&i440fx_pcihost_info);
> -- 
> 1.9.1
>
Tiejun Chen May 28, 2014, 1:10 a.m. UTC | #3 
> -----Original Message-----
> From: Konrad Rzeszutek Wilk [mailto:konrad.wilk@oracle.com]
> Sent: Tuesday, May 27, 2014 10:48 PM
> To: Chen, Tiejun
> Cc: anthony.perard@citrix.com; stefano.stabellini@eu.citrix.com;
> mst@redhat.com; Kelly.Zytaruk@amd.com; peter.maydell@linaro.org;
> xen-devel@lists.xensource.com; Kay, Allen M; qemu-devel@nongnu.org;
> anthony@codemonkey.ws; Zhang, Yang Z
> Subject: Re: [Xen-devel] [v3][PATCH 4/5] xen, gfx passthrough: create host
> bridge to passthrough
> 
> On Mon, May 26, 2014 at 05:43:08PM +0800, Tiejun Chen wrote:
> > Implement that pci host bridge to specific to passthrough. Actually
> > thsi just inherit the standard one.
> 
> s/thsi/this
> 

Fixed.

Thanks
Tiejun
Tiejun Chen May 28, 2014, 1:58 a.m. UTC | #4 
> -----Original Message-----
> From: qemu-devel-bounces+tiejun.chen=intel.com@nongnu.org
> [mailto:qemu-devel-bounces+tiejun.chen=intel.com@nongnu.org] On Behalf Of
> Stefano Stabellini
> Sent: Wednesday, May 28, 2014 2:05 AM
> To: Chen, Tiejun
> Cc: peter.maydell@linaro.org; xen-devel@lists.xensource.com;
> mst@redhat.com; stefano.stabellini@eu.citrix.com; Kay, Allen M;
> qemu-devel@nongnu.org; Kelly.Zytaruk@amd.com; Zhang, Yang Z;
> anthony@codemonkey.ws; anthony.perard@citrix.com
> Subject: Re: [Qemu-devel] [v3][PATCH 4/5] xen, gfx passthrough: create host
> bridge to passthrough
> 
> On Mon, 26 May 2014, Tiejun Chen wrote:
> > Implement that pci host bridge to specific to passthrough. Actually
> > thsi just inherit the standard one.
> >
> > Signed-off-by: Tiejun Chen <tiejun.chen@intel.com>
> > ---
> > v3:
> >
> > * Just fix this patch head description typo.
> >
> > v2:
> >
> > * New patch.
> >

[snip]

> >  PCIBus *i440fx_init(PCII440FXState **pi440fx_state,
> >                      int *piix3_devfn,
> >                      ISABus **isa_bus, qemu_irq *pic, @@ -333,8
> > +348,15 @@ PCIBus *i440fx_init(PCII440FXState **pi440fx_state,
> >      object_property_add_child(qdev_get_machine(), "i440fx",
> OBJECT(dev), NULL);
> >      qdev_init_nofail(dev);
> >
> > -    d = pci_create_simple(b, 0, TYPE_I440FX_PCI_DEVICE);
> > -    *pi440fx_state = I440FX_PCI_DEVICE(d);
> > +    if (xen_enabled()) {
> 
> if (xen_enabled() && xen_has_gfx_passthru) ?
> 

Fine.

Thanks
Tiejun
diff mbox

Patch

diff --git a/hw/pci-host/piix.c b/hw/pci-host/piix.c
index ffdc853..8b11953 100644
--- a/hw/pci-host/piix.c
+++ b/hw/pci-host/piix.c
@@ -34,6 +34,7 @@ 
 #include "sysemu/sysemu.h"
 #include "hw/i386/ioapic.h"
 #include "qapi/visitor.h"
+#include "hw/xen/xen_pt.h"
 
 /*
  * I440FX chipset data sheet.
@@ -95,6 +96,10 @@  typedef struct PIIX3State {
 #define I440FX_PCI_DEVICE(obj) \
     OBJECT_CHECK(PCII440FXState, (obj), TYPE_I440FX_PCI_DEVICE)
 
+#define TYPE_I440FX_XEN_PCI_DEVICE "i440FX-xen"
+#define I440FX_XEN_PCI_DEVICE(obj) \
+    OBJECT_CHECK(PCII440FXState, (obj), TYPE_I440FX_XEN_PCI_DEVICE)
+
 struct PCII440FXState {
     /*< private >*/
     PCIDevice parent_obj;
@@ -305,6 +310,16 @@  static int i440fx_initfn(PCIDevice *dev)
     return 0;
 }
 
+static int i440fx_xen_initfn(PCIDevice *dev)
+{
+    PCII440FXState *d = I440FX_XEN_PCI_DEVICE(dev);
+
+    dev->config[I440FX_SMRAM] = 0x02;
+
+    cpu_smm_register(&i440fx_set_smm, d);
+    return 0;
+}
+
 PCIBus *i440fx_init(PCII440FXState **pi440fx_state,
                     int *piix3_devfn,
                     ISABus **isa_bus, qemu_irq *pic,
@@ -333,8 +348,15 @@  PCIBus *i440fx_init(PCII440FXState **pi440fx_state,
     object_property_add_child(qdev_get_machine(), "i440fx", OBJECT(dev), NULL);
     qdev_init_nofail(dev);
 
-    d = pci_create_simple(b, 0, TYPE_I440FX_PCI_DEVICE);
-    *pi440fx_state = I440FX_PCI_DEVICE(d);
+    if (xen_enabled()) {
+        d = pci_create_simple(b, 0, TYPE_I440FX_XEN_PCI_DEVICE);
+        *pi440fx_state = I440FX_XEN_PCI_DEVICE(d);
+        pci_create_pch(b);
+    } else {
+        d = pci_create_simple(b, 0, TYPE_I440FX_PCI_DEVICE);
+        *pi440fx_state = I440FX_PCI_DEVICE(d);
+    }
+
     f = *pi440fx_state;
     f->system_memory = address_space_mem;
     f->pci_address_space = pci_address_space;
@@ -705,6 +727,35 @@  static const TypeInfo i440fx_info = {
     .class_init    = i440fx_class_init,
 };
 
+static void i440fx_xen_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
+
+    k->init = i440fx_xen_initfn;
+    k->config_write = igd_pci_write;
+    k->config_read = igd_pci_read;
+    k->vendor_id = PCI_VENDOR_ID_INTEL;
+    k->device_id = PCI_DEVICE_ID_INTEL_82441;
+    k->revision = 0x02;
+    k->class_id = PCI_CLASS_BRIDGE_ISA;
+    dc->desc = "XEN Host bridge";
+    dc->vmsd = &vmstate_i440fx;
+    /*
+     * PCI-facing part of the host bridge, not usable without the
+     * host-facing part, which can't be device_add'ed, yet.
+     */
+    dc->cannot_instantiate_with_device_add_yet = true;
+    dc->hotpluggable   = false;
+}
+
+static const TypeInfo i440fx_xen_info = {
+    .name          = TYPE_I440FX_XEN_PCI_DEVICE,
+    .parent        = TYPE_PCI_DEVICE,
+    .instance_size = sizeof(PCII440FXState),
+    .class_init    = i440fx_xen_class_init,
+};
+
 static const char *i440fx_pcihost_root_bus_path(PCIHostState *host_bridge,
                                                 PCIBus *rootbus)
 {
@@ -746,6 +797,7 @@  static const TypeInfo i440fx_pcihost_info = {
 static void i440fx_register_types(void)
 {
     type_register_static(&i440fx_info);
+    type_register_static(&i440fx_xen_info);
     type_register_static(&piix3_info);
     type_register_static(&piix3_xen_info);
     type_register_static(&i440fx_pcihost_info);