[PATCH v2 09/25] hw/pci-host/gpex-acpi: Use build_pci_host_bridge_osc_method

Eric Auger posted 25 patches 5 months, 3 weeks ago
Maintainers: "Michael S. Tsirkin" <mst@redhat.com>, Igor Mammedov <imammedo@redhat.com>, Ani Sinha <anisinha@redhat.com>, Paolo Bonzini <pbonzini@redhat.com>, Peter Maydell <peter.maydell@linaro.org>, Shannon Zhao <shannon.zhaosl@gmail.com>, "Daniel P. Berrangé" <berrange@redhat.com>, Eduardo Habkost <eduardo@habkost.net>, Marcel Apfelbaum <marcel.apfelbaum@gmail.com>, Richard Henderson <richard.henderson@linaro.org>
There is a newer version of this series
[PATCH v2 09/25] hw/pci-host/gpex-acpi: Use build_pci_host_bridge_osc_method
Posted by Eric Auger 5 months, 3 weeks ago
gpex build_host_bridge_osc() and x86 originated
build_pci_host_bridge_osc_method() are mostly identical.

In GPEX, SUPP is set to CDW2 but is not further used. CTRL
is same as Local0.

So let gpex code reuse build_pci_host_bridge_osc_method()
and remove build_host_bridge_osc().

The disassembled DSDT difference is given below:

  * Original Table Header:
  *     Signature        "DSDT"
- *     Length           0x00001A4F (6735)
+ *     Length           0x00001A35 (6709)
  *     Revision         0x02
- *     Checksum         0xBF
+ *     Checksum         0xDD
  *     OEM ID           "BOCHS "
  *     OEM Table ID     "BXPC    "
  *     OEM Revision     0x00000001 (1)
@@ -1849,27 +1849,26 @@ DefinitionBlock ("", "DSDT", 2, "BOCHS ", "BXPC    ", 0x00000001)
                 {
                     CreateDWordField (Arg3, 0x04, CDW2)
                     CreateDWordField (Arg3, 0x08, CDW3)
-                    SUPP = CDW2 /* \_SB_.PCI0._OSC.CDW2 */
-                    CTRL = CDW3 /* \_SB_.PCI0._OSC.CDW3 */
-                    CTRL &= 0x1F
+                    Local0 = CDW3 /* \_SB_.PCI0._OSC.CDW3 */
+                    Local0 &= 0x1F
                     If ((Arg1 != One))
                     {
                         CDW1 |= 0x08
                     }

-                    If ((CDW3 != CTRL))
+                    If ((CDW3 != Local0))
                     {
                         CDW1 |= 0x10
                     }

-                    CDW3 = CTRL /* \_SB_.PCI0.CTRL */
-                    Return (Arg3)
+                    CDW3 = Local0
                 }
                 Else
                 {
                     CDW1 |= 0x04
-                    Return (Arg3)
                 }
+
+                Return (Arg3)
             }

             Method (_DSM, 4, NotSerialized)  // _DSM: Device-Specific Method

Signed-off-by: Eric Auger <eric.auger@redhat.com>

---

v1 -> v2:
- move in the dsdt.dsl diff in the commit message and remove useless
  info (Gustavi, Michael)
---
 hw/pci-host/gpex-acpi.c | 60 +++--------------------------------------
 1 file changed, 4 insertions(+), 56 deletions(-)

diff --git a/hw/pci-host/gpex-acpi.c b/hw/pci-host/gpex-acpi.c
index f1ab30f3d5..98c9868c3f 100644
--- a/hw/pci-host/gpex-acpi.c
+++ b/hw/pci-host/gpex-acpi.c
@@ -50,60 +50,7 @@ static void acpi_dsdt_add_pci_route_table(Aml *dev, uint32_t irq,
     }
 }
 
-static Aml *build_host_bridge_osc(bool enable_native_pcie_hotplug)
-{
-    Aml *method, *UUID, *ifctx, *ifctx1, *elsectx;
-
-    method = aml_method("_OSC", 4, AML_NOTSERIALIZED);
-    aml_append(method,
-        aml_create_dword_field(aml_arg(3), aml_int(0), "CDW1"));
-
-    /* PCI Firmware Specification 3.0
-     * 4.5.1. _OSC Interface for PCI Host Bridge Devices
-     * The _OSC interface for a PCI/PCI-X/PCI Express hierarchy is
-     * identified by the Universal Unique IDentifier (UUID)
-     * 33DB4D5B-1FF7-401C-9657-7441C03DD766
-     */
-    UUID = aml_touuid("33DB4D5B-1FF7-401C-9657-7441C03DD766");
-    ifctx = aml_if(aml_equal(aml_arg(0), UUID));
-    aml_append(ifctx,
-        aml_create_dword_field(aml_arg(3), aml_int(4), "CDW2"));
-    aml_append(ifctx,
-        aml_create_dword_field(aml_arg(3), aml_int(8), "CDW3"));
-    aml_append(ifctx, aml_store(aml_name("CDW2"), aml_name("SUPP")));
-    aml_append(ifctx, aml_store(aml_name("CDW3"), aml_name("CTRL")));
-
-    /*
-     * Allow OS control for SHPCHotplug, PME, AER, PCIeCapability,
-     * and PCIeHotplug depending on enable_native_pcie_hotplug
-     */
-    aml_append(ifctx, aml_and(aml_name("CTRL"),
-               aml_int(0x1E | (enable_native_pcie_hotplug ? 0x1 : 0x0)),
-               aml_name("CTRL")));
-
-    ifctx1 = aml_if(aml_lnot(aml_equal(aml_arg(1), aml_int(0x1))));
-    aml_append(ifctx1, aml_or(aml_name("CDW1"), aml_int(0x08),
-                              aml_name("CDW1")));
-    aml_append(ifctx, ifctx1);
-
-    ifctx1 = aml_if(aml_lnot(aml_equal(aml_name("CDW3"), aml_name("CTRL"))));
-    aml_append(ifctx1, aml_or(aml_name("CDW1"), aml_int(0x10),
-                              aml_name("CDW1")));
-    aml_append(ifctx, ifctx1);
-
-    aml_append(ifctx, aml_store(aml_name("CTRL"), aml_name("CDW3")));
-    aml_append(ifctx, aml_return(aml_arg(3)));
-    aml_append(method, ifctx);
-
-    elsectx = aml_else();
-    aml_append(elsectx, aml_or(aml_name("CDW1"), aml_int(4),
-                               aml_name("CDW1")));
-    aml_append(elsectx, aml_return(aml_arg(3)));
-    aml_append(method, elsectx);
-    return method;
-}
-
-static Aml *build_host_bridge_dsm(void)
+static Aml *build_pci_host_bridge_dsm_method(void)
 {
     Aml *method = aml_method("_DSM", 4, AML_NOTSERIALIZED);
     Aml *UUID, *ifctx, *ifctx1, *buf;
@@ -134,8 +81,9 @@ static void acpi_dsdt_add_host_bridge_methods(Aml *dev,
     aml_append(dev, aml_name_decl("SUPP", aml_int(0)));
     aml_append(dev, aml_name_decl("CTRL", aml_int(0)));
     /* Declare an _OSC (OS Control Handoff) method */
-    aml_append(dev, build_host_bridge_osc(enable_native_pcie_hotplug));
-    aml_append(dev, build_host_bridge_dsm());
+    aml_append(dev,
+               build_pci_host_bridge_osc_method(enable_native_pcie_hotplug));
+    aml_append(dev, build_pci_host_bridge_dsm_method());
 }
 
 void acpi_dsdt_add_gpex(Aml *scope, struct GPEXConfig *cfg)
-- 
2.49.0
Re: [PATCH v2 09/25] hw/pci-host/gpex-acpi: Use build_pci_host_bridge_osc_method
Posted by Jonathan Cameron via 5 months, 2 weeks ago
On Tue, 27 May 2025 09:40:11 +0200
Eric Auger <eric.auger@redhat.com> wrote:

> gpex build_host_bridge_osc() and x86 originated
> build_pci_host_bridge_osc_method() are mostly identical.
> 
> In GPEX, SUPP is set to CDW2 but is not further used. CTRL
> is same as Local0.
> 
> So let gpex code reuse build_pci_host_bridge_osc_method()
> and remove build_host_bridge_osc().
> 
> The disassembled DSDT difference is given below:
> 
>   * Original Table Header:
>   *     Signature        "DSDT"
> - *     Length           0x00001A4F (6735)
> + *     Length           0x00001A35 (6709)
>   *     Revision         0x02
> - *     Checksum         0xBF
> + *     Checksum         0xDD
>   *     OEM ID           "BOCHS "
>   *     OEM Table ID     "BXPC    "
>   *     OEM Revision     0x00000001 (1)
> @@ -1849,27 +1849,26 @@ DefinitionBlock ("", "DSDT", 2, "BOCHS ", "BXPC    ", 0x00000001)
>                  {
>                      CreateDWordField (Arg3, 0x04, CDW2)
>                      CreateDWordField (Arg3, 0x08, CDW3)
> -                    SUPP = CDW2 /* \_SB_.PCI0._OSC.CDW2 */
> -                    CTRL = CDW3 /* \_SB_.PCI0._OSC.CDW3 */
> -                    CTRL &= 0x1F
> +                    Local0 = CDW3 /* \_SB_.PCI0._OSC.CDW3 */
> +                    Local0 &= 0x1F
>                      If ((Arg1 != One))
>                      {
>                          CDW1 |= 0x08
>                      }
> 
> -                    If ((CDW3 != CTRL))
> +                    If ((CDW3 != Local0))
>                      {
>                          CDW1 |= 0x10
>                      }
> 
> -                    CDW3 = CTRL /* \_SB_.PCI0.CTRL */
> -                    Return (Arg3)
> +                    CDW3 = Local0
>                  }
>                  Else
>                  {
>                      CDW1 |= 0x04
> -                    Return (Arg3)
>                  }
> +
> +                Return (Arg3)
>              }
> 
>              Method (_DSM, 4, NotSerialized)  // _DSM: Device-Specific Method
> 
> Signed-off-by: Eric Auger <eric.auger@redhat.com>
> 
> ---
> 
> v1 -> v2:
> - move in the dsdt.dsl diff in the commit message and remove useless
>   info (Gustavi, Michael)
> ---
>  hw/pci-host/gpex-acpi.c | 60 +++--------------------------------------
>  1 file changed, 4 insertions(+), 56 deletions(-)
> 
> diff --git a/hw/pci-host/gpex-acpi.c b/hw/pci-host/gpex-acpi.c
> index f1ab30f3d5..98c9868c3f 100644
> --- a/hw/pci-host/gpex-acpi.c
> +++ b/hw/pci-host/gpex-acpi.c
> @@ -50,60 +50,7 @@ static void acpi_dsdt_add_pci_route_table(Aml *dev, uint32_t irq,
>      }
>  }
>  
> -static Aml *build_host_bridge_osc(bool enable_native_pcie_hotplug)
> -{
> -    Aml *method, *UUID, *ifctx, *ifctx1, *elsectx;
> -
> -    method = aml_method("_OSC", 4, AML_NOTSERIALIZED);
> -    aml_append(method,
> -        aml_create_dword_field(aml_arg(3), aml_int(0), "CDW1"));
> -
> -    /* PCI Firmware Specification 3.0
> -     * 4.5.1. _OSC Interface for PCI Host Bridge Devices
> -     * The _OSC interface for a PCI/PCI-X/PCI Express hierarchy is
> -     * identified by the Universal Unique IDentifier (UUID)
> -     * 33DB4D5B-1FF7-401C-9657-7441C03DD766
> -     */
> -    UUID = aml_touuid("33DB4D5B-1FF7-401C-9657-7441C03DD766");
> -    ifctx = aml_if(aml_equal(aml_arg(0), UUID));
> -    aml_append(ifctx,
> -        aml_create_dword_field(aml_arg(3), aml_int(4), "CDW2"));
> -    aml_append(ifctx,
> -        aml_create_dword_field(aml_arg(3), aml_int(8), "CDW3"));
> -    aml_append(ifctx, aml_store(aml_name("CDW2"), aml_name("SUPP")));
> -    aml_append(ifctx, aml_store(aml_name("CDW3"), aml_name("CTRL")));
> -
> -    /*
> -     * Allow OS control for SHPCHotplug, PME, AER, PCIeCapability,
> -     * and PCIeHotplug depending on enable_native_pcie_hotplug
> -     */
> -    aml_append(ifctx, aml_and(aml_name("CTRL"),
> -               aml_int(0x1E | (enable_native_pcie_hotplug ? 0x1 : 0x0)),
> -               aml_name("CTRL")));
> -
> -    ifctx1 = aml_if(aml_lnot(aml_equal(aml_arg(1), aml_int(0x1))));
> -    aml_append(ifctx1, aml_or(aml_name("CDW1"), aml_int(0x08),
> -                              aml_name("CDW1")));
> -    aml_append(ifctx, ifctx1);
> -
> -    ifctx1 = aml_if(aml_lnot(aml_equal(aml_name("CDW3"), aml_name("CTRL"))));
> -    aml_append(ifctx1, aml_or(aml_name("CDW1"), aml_int(0x10),
> -                              aml_name("CDW1")));
> -    aml_append(ifctx, ifctx1);
> -
> -    aml_append(ifctx, aml_store(aml_name("CTRL"), aml_name("CDW3")));
> -    aml_append(ifctx, aml_return(aml_arg(3)));
> -    aml_append(method, ifctx);
> -
> -    elsectx = aml_else();
> -    aml_append(elsectx, aml_or(aml_name("CDW1"), aml_int(4),
> -                               aml_name("CDW1")));
> -    aml_append(elsectx, aml_return(aml_arg(3)));
> -    aml_append(method, elsectx);
> -    return method;
> -}
> -
> -static Aml *build_host_bridge_dsm(void)
> +static Aml *build_pci_host_bridge_dsm_method(void)
>  {
>      Aml *method = aml_method("_DSM", 4, AML_NOTSERIALIZED);
>      Aml *UUID, *ifctx, *ifctx1, *buf;
> @@ -134,8 +81,9 @@ static void acpi_dsdt_add_host_bridge_methods(Aml *dev,
>      aml_append(dev, aml_name_decl("SUPP", aml_int(0)));
>      aml_append(dev, aml_name_decl("CTRL", aml_int(0)));

This is where they become unused I think...

>      /* Declare an _OSC (OS Control Handoff) method */
> -    aml_append(dev, build_host_bridge_osc(enable_native_pcie_hotplug));
> -    aml_append(dev, build_host_bridge_dsm());
> +    aml_append(dev,
> +               build_pci_host_bridge_osc_method(enable_native_pcie_hotplug));
> +    aml_append(dev, build_pci_host_bridge_dsm_method());
>  }
>  
>  void acpi_dsdt_add_gpex(Aml *scope, struct GPEXConfig *cfg)
Re: [PATCH v2 09/25] hw/pci-host/gpex-acpi: Use build_pci_host_bridge_osc_method
Posted by Eric Auger 5 months, 1 week ago

On 5/30/25 12:05 PM, Jonathan Cameron wrote:
> On Tue, 27 May 2025 09:40:11 +0200
> Eric Auger <eric.auger@redhat.com> wrote:
>
>> gpex build_host_bridge_osc() and x86 originated
>> build_pci_host_bridge_osc_method() are mostly identical.
>>
>> In GPEX, SUPP is set to CDW2 but is not further used. CTRL
>> is same as Local0.
>>
>> So let gpex code reuse build_pci_host_bridge_osc_method()
>> and remove build_host_bridge_osc().
>>
>> The disassembled DSDT difference is given below:
>>
>>   * Original Table Header:
>>   *     Signature        "DSDT"
>> - *     Length           0x00001A4F (6735)
>> + *     Length           0x00001A35 (6709)
>>   *     Revision         0x02
>> - *     Checksum         0xBF
>> + *     Checksum         0xDD
>>   *     OEM ID           "BOCHS "
>>   *     OEM Table ID     "BXPC    "
>>   *     OEM Revision     0x00000001 (1)
>> @@ -1849,27 +1849,26 @@ DefinitionBlock ("", "DSDT", 2, "BOCHS ", "BXPC    ", 0x00000001)
>>                  {
>>                      CreateDWordField (Arg3, 0x04, CDW2)
>>                      CreateDWordField (Arg3, 0x08, CDW3)
>> -                    SUPP = CDW2 /* \_SB_.PCI0._OSC.CDW2 */
>> -                    CTRL = CDW3 /* \_SB_.PCI0._OSC.CDW3 */
>> -                    CTRL &= 0x1F
>> +                    Local0 = CDW3 /* \_SB_.PCI0._OSC.CDW3 */
>> +                    Local0 &= 0x1F
>>                      If ((Arg1 != One))
>>                      {
>>                          CDW1 |= 0x08
>>                      }
>>
>> -                    If ((CDW3 != CTRL))
>> +                    If ((CDW3 != Local0))
>>                      {
>>                          CDW1 |= 0x10
>>                      }
>>
>> -                    CDW3 = CTRL /* \_SB_.PCI0.CTRL */
>> -                    Return (Arg3)
>> +                    CDW3 = Local0
>>                  }
>>                  Else
>>                  {
>>                      CDW1 |= 0x04
>> -                    Return (Arg3)
>>                  }
>> +
>> +                Return (Arg3)
>>              }
>>
>>              Method (_DSM, 4, NotSerialized)  // _DSM: Device-Specific Method
>>
>> Signed-off-by: Eric Auger <eric.auger@redhat.com>
>>
>> ---
>>
>> v1 -> v2:
>> - move in the dsdt.dsl diff in the commit message and remove useless
>>   info (Gustavi, Michael)
>> ---
>>  hw/pci-host/gpex-acpi.c | 60 +++--------------------------------------
>>  1 file changed, 4 insertions(+), 56 deletions(-)
>>
>> diff --git a/hw/pci-host/gpex-acpi.c b/hw/pci-host/gpex-acpi.c
>> index f1ab30f3d5..98c9868c3f 100644
>> --- a/hw/pci-host/gpex-acpi.c
>> +++ b/hw/pci-host/gpex-acpi.c
>> @@ -50,60 +50,7 @@ static void acpi_dsdt_add_pci_route_table(Aml *dev, uint32_t irq,
>>      }
>>  }
>>  
>> -static Aml *build_host_bridge_osc(bool enable_native_pcie_hotplug)
>> -{
>> -    Aml *method, *UUID, *ifctx, *ifctx1, *elsectx;
>> -
>> -    method = aml_method("_OSC", 4, AML_NOTSERIALIZED);
>> -    aml_append(method,
>> -        aml_create_dword_field(aml_arg(3), aml_int(0), "CDW1"));
>> -
>> -    /* PCI Firmware Specification 3.0
>> -     * 4.5.1. _OSC Interface for PCI Host Bridge Devices
>> -     * The _OSC interface for a PCI/PCI-X/PCI Express hierarchy is
>> -     * identified by the Universal Unique IDentifier (UUID)
>> -     * 33DB4D5B-1FF7-401C-9657-7441C03DD766
>> -     */
>> -    UUID = aml_touuid("33DB4D5B-1FF7-401C-9657-7441C03DD766");
>> -    ifctx = aml_if(aml_equal(aml_arg(0), UUID));
>> -    aml_append(ifctx,
>> -        aml_create_dword_field(aml_arg(3), aml_int(4), "CDW2"));
>> -    aml_append(ifctx,
>> -        aml_create_dword_field(aml_arg(3), aml_int(8), "CDW3"));
>> -    aml_append(ifctx, aml_store(aml_name("CDW2"), aml_name("SUPP")));
>> -    aml_append(ifctx, aml_store(aml_name("CDW3"), aml_name("CTRL")));
>> -
>> -    /*
>> -     * Allow OS control for SHPCHotplug, PME, AER, PCIeCapability,
>> -     * and PCIeHotplug depending on enable_native_pcie_hotplug
>> -     */
>> -    aml_append(ifctx, aml_and(aml_name("CTRL"),
>> -               aml_int(0x1E | (enable_native_pcie_hotplug ? 0x1 : 0x0)),
>> -               aml_name("CTRL")));
>> -
>> -    ifctx1 = aml_if(aml_lnot(aml_equal(aml_arg(1), aml_int(0x1))));
>> -    aml_append(ifctx1, aml_or(aml_name("CDW1"), aml_int(0x08),
>> -                              aml_name("CDW1")));
>> -    aml_append(ifctx, ifctx1);
>> -
>> -    ifctx1 = aml_if(aml_lnot(aml_equal(aml_name("CDW3"), aml_name("CTRL"))));
>> -    aml_append(ifctx1, aml_or(aml_name("CDW1"), aml_int(0x10),
>> -                              aml_name("CDW1")));
>> -    aml_append(ifctx, ifctx1);
>> -
>> -    aml_append(ifctx, aml_store(aml_name("CTRL"), aml_name("CDW3")));
>> -    aml_append(ifctx, aml_return(aml_arg(3)));
>> -    aml_append(method, ifctx);
>> -
>> -    elsectx = aml_else();
>> -    aml_append(elsectx, aml_or(aml_name("CDW1"), aml_int(4),
>> -                               aml_name("CDW1")));
>> -    aml_append(elsectx, aml_return(aml_arg(3)));
>> -    aml_append(method, elsectx);
>> -    return method;
>> -}
>> -
>> -static Aml *build_host_bridge_dsm(void)
>> +static Aml *build_pci_host_bridge_dsm_method(void)
>>  {
>>      Aml *method = aml_method("_DSM", 4, AML_NOTSERIALIZED);
>>      Aml *UUID, *ifctx, *ifctx1, *buf;
>> @@ -134,8 +81,9 @@ static void acpi_dsdt_add_host_bridge_methods(Aml *dev,
>>      aml_append(dev, aml_name_decl("SUPP", aml_int(0)));
>>      aml_append(dev, aml_name_decl("CTRL", aml_int(0)));
> This is where they become unused I think...

Indeed.

This means that I need to regenerate the reference blobs accordingly
(for Gustavo's awarness).

Eric
>
>>      /* Declare an _OSC (OS Control Handoff) method */
>> -    aml_append(dev, build_host_bridge_osc(enable_native_pcie_hotplug));
>> -    aml_append(dev, build_host_bridge_dsm());
>> +    aml_append(dev,
>> +               build_pci_host_bridge_osc_method(enable_native_pcie_hotplug));
>> +    aml_append(dev, build_pci_host_bridge_dsm_method());
>>  }
>>  
>>  void acpi_dsdt_add_gpex(Aml *scope, struct GPEXConfig *cfg)
Re: [PATCH v2 09/25] hw/pci-host/gpex-acpi: Use build_pci_host_bridge_osc_method
Posted by Igor Mammedov 5 months, 3 weeks ago
On Tue, 27 May 2025 09:40:11 +0200
Eric Auger <eric.auger@redhat.com> wrote:

> gpex build_host_bridge_osc() and x86 originated
> build_pci_host_bridge_osc_method() are mostly identical.
> 
> In GPEX, SUPP is set to CDW2 but is not further used. CTRL
> is same as Local0.
> 
> So let gpex code reuse build_pci_host_bridge_osc_method()
> and remove build_host_bridge_osc().
> 
> The disassembled DSDT difference is given below:
> 
>   * Original Table Header:
>   *     Signature        "DSDT"
> - *     Length           0x00001A4F (6735)
> + *     Length           0x00001A35 (6709)
>   *     Revision         0x02
> - *     Checksum         0xBF
> + *     Checksum         0xDD
>   *     OEM ID           "BOCHS "
>   *     OEM Table ID     "BXPC    "
>   *     OEM Revision     0x00000001 (1)
> @@ -1849,27 +1849,26 @@ DefinitionBlock ("", "DSDT", 2, "BOCHS ", "BXPC    ", 0x00000001)
>                  {
>                      CreateDWordField (Arg3, 0x04, CDW2)
>                      CreateDWordField (Arg3, 0x08, CDW3)
> -                    SUPP = CDW2 /* \_SB_.PCI0._OSC.CDW2 */
> -                    CTRL = CDW3 /* \_SB_.PCI0._OSC.CDW3 */
> -                    CTRL &= 0x1F
> +                    Local0 = CDW3 /* \_SB_.PCI0._OSC.CDW3 */
> +                    Local0 &= 0x1F
>                      If ((Arg1 != One))
>                      {
>                          CDW1 |= 0x08
>                      }
> 
> -                    If ((CDW3 != CTRL))
> +                    If ((CDW3 != Local0))
>                      {
>                          CDW1 |= 0x10
>                      }
> 
> -                    CDW3 = CTRL /* \_SB_.PCI0.CTRL */
> -                    Return (Arg3)
> +                    CDW3 = Local0
>                  }
>                  Else
>                  {
>                      CDW1 |= 0x04
> -                    Return (Arg3)
>                  }
> +
> +                Return (Arg3)
>              }
> 
>              Method (_DSM, 4, NotSerialized)  // _DSM: Device-Specific Method
> 
> Signed-off-by: Eric Auger <eric.auger@redhat.com>

Reviewed-by: Igor Mammedov <imammedo@redhat.com>
 
> 
> ---
> 
> v1 -> v2:
> - move in the dsdt.dsl diff in the commit message and remove useless
>   info (Gustavi, Michael)
> ---
>  hw/pci-host/gpex-acpi.c | 60 +++--------------------------------------
>  1 file changed, 4 insertions(+), 56 deletions(-)
> 
> diff --git a/hw/pci-host/gpex-acpi.c b/hw/pci-host/gpex-acpi.c
> index f1ab30f3d5..98c9868c3f 100644
> --- a/hw/pci-host/gpex-acpi.c
> +++ b/hw/pci-host/gpex-acpi.c
> @@ -50,60 +50,7 @@ static void acpi_dsdt_add_pci_route_table(Aml *dev, uint32_t irq,
>      }
>  }
>  
> -static Aml *build_host_bridge_osc(bool enable_native_pcie_hotplug)
> -{
> -    Aml *method, *UUID, *ifctx, *ifctx1, *elsectx;
> -
> -    method = aml_method("_OSC", 4, AML_NOTSERIALIZED);
> -    aml_append(method,
> -        aml_create_dword_field(aml_arg(3), aml_int(0), "CDW1"));
> -
> -    /* PCI Firmware Specification 3.0
> -     * 4.5.1. _OSC Interface for PCI Host Bridge Devices
> -     * The _OSC interface for a PCI/PCI-X/PCI Express hierarchy is
> -     * identified by the Universal Unique IDentifier (UUID)
> -     * 33DB4D5B-1FF7-401C-9657-7441C03DD766
> -     */
> -    UUID = aml_touuid("33DB4D5B-1FF7-401C-9657-7441C03DD766");
> -    ifctx = aml_if(aml_equal(aml_arg(0), UUID));
> -    aml_append(ifctx,
> -        aml_create_dword_field(aml_arg(3), aml_int(4), "CDW2"));
> -    aml_append(ifctx,
> -        aml_create_dword_field(aml_arg(3), aml_int(8), "CDW3"));
> -    aml_append(ifctx, aml_store(aml_name("CDW2"), aml_name("SUPP")));
> -    aml_append(ifctx, aml_store(aml_name("CDW3"), aml_name("CTRL")));
> -
> -    /*
> -     * Allow OS control for SHPCHotplug, PME, AER, PCIeCapability,
> -     * and PCIeHotplug depending on enable_native_pcie_hotplug
> -     */
> -    aml_append(ifctx, aml_and(aml_name("CTRL"),
> -               aml_int(0x1E | (enable_native_pcie_hotplug ? 0x1 : 0x0)),
> -               aml_name("CTRL")));
> -
> -    ifctx1 = aml_if(aml_lnot(aml_equal(aml_arg(1), aml_int(0x1))));
> -    aml_append(ifctx1, aml_or(aml_name("CDW1"), aml_int(0x08),
> -                              aml_name("CDW1")));
> -    aml_append(ifctx, ifctx1);
> -
> -    ifctx1 = aml_if(aml_lnot(aml_equal(aml_name("CDW3"), aml_name("CTRL"))));
> -    aml_append(ifctx1, aml_or(aml_name("CDW1"), aml_int(0x10),
> -                              aml_name("CDW1")));
> -    aml_append(ifctx, ifctx1);
> -
> -    aml_append(ifctx, aml_store(aml_name("CTRL"), aml_name("CDW3")));
> -    aml_append(ifctx, aml_return(aml_arg(3)));
> -    aml_append(method, ifctx);
> -
> -    elsectx = aml_else();
> -    aml_append(elsectx, aml_or(aml_name("CDW1"), aml_int(4),
> -                               aml_name("CDW1")));
> -    aml_append(elsectx, aml_return(aml_arg(3)));
> -    aml_append(method, elsectx);
> -    return method;
> -}
> -
> -static Aml *build_host_bridge_dsm(void)
> +static Aml *build_pci_host_bridge_dsm_method(void)
>  {
>      Aml *method = aml_method("_DSM", 4, AML_NOTSERIALIZED);
>      Aml *UUID, *ifctx, *ifctx1, *buf;
> @@ -134,8 +81,9 @@ static void acpi_dsdt_add_host_bridge_methods(Aml *dev,
>      aml_append(dev, aml_name_decl("SUPP", aml_int(0)));
>      aml_append(dev, aml_name_decl("CTRL", aml_int(0)));
>      /* Declare an _OSC (OS Control Handoff) method */
> -    aml_append(dev, build_host_bridge_osc(enable_native_pcie_hotplug));
> -    aml_append(dev, build_host_bridge_dsm());
> +    aml_append(dev,
> +               build_pci_host_bridge_osc_method(enable_native_pcie_hotplug));
> +    aml_append(dev, build_pci_host_bridge_dsm_method());
>  }
>  
>  void acpi_dsdt_add_gpex(Aml *scope, struct GPEXConfig *cfg)