[Qemu-devel] [PATCH v4 0/2] arm/acpi: simplify aml code and enable SHPC

[Qemu-devel] [PATCH v4 0/2] arm/acpi: simplify aml code and enable SHPC

[Heyi Guo]

After the introduction of generic PCIe root port and PCIe-PCI bridge, we will
also have SHPC controller on ARM, and we don't support ACPI hot plug, so just
enable SHPC native hot plug.

Igor also spotted the store operation outside of bit and/or is not necessary, so
simply the code at first.

v4:
- Improve the code indention.

Cc: Shannon Zhao <shannon.zhaosl@gmail.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>

Heyi Guo (2):
  hw/arm/acpi: simplify AML bit and/or statement
  hw/arm/acpi: enable SHPC native hot plug

 hw/arm/virt-acpi-build.c | 21 +++++++++++++--------
 1 file changed, 13 insertions(+), 8 deletions(-)

-- 
1.8.3.1

[Qemu-devel] [PATCH v4 1/2] hw/arm/acpi: simplify AML bit and/or statement

[Heyi Guo]

The last argument of AML bit and/or statement is the target variable,
so we don't need to use a NULL target and then an additional store
operation; a single bit and/or statement is enough.

Cc: Shannon Zhao <shannon.zhaosl@gmail.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Suggested-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Heyi Guo <guoheyi@huawei.com>
---
 hw/arm/virt-acpi-build.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
index d7e2e48..cebec4c 100644
--- a/hw/arm/virt-acpi-build.c
+++ b/hw/arm/virt-acpi-build.c
@@ -265,17 +265,17 @@ static void acpi_dsdt_add_pci(Aml *scope, const MemMapEntry *memmap,
         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")));
-    aml_append(ifctx, aml_store(aml_and(aml_name("CTRL"), aml_int(0x1D), NULL),
-                                aml_name("CTRL")));
+    aml_append(ifctx, aml_and(aml_name("CTRL"), aml_int(0x1D),
+                              aml_name("CTRL")));
 
     ifctx1 = aml_if(aml_lnot(aml_equal(aml_arg(1), aml_int(0x1))));
-    aml_append(ifctx1, aml_store(aml_or(aml_name("CDW1"), aml_int(0x08), NULL),
-                                 aml_name("CDW1")));
+    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_store(aml_or(aml_name("CDW1"), aml_int(0x10), NULL),
-                                 aml_name("CDW1")));
+    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")));
@@ -283,8 +283,8 @@ static void acpi_dsdt_add_pci(Aml *scope, const MemMapEntry *memmap,
     aml_append(method, ifctx);
 
     elsectx = aml_else();
-    aml_append(elsectx, aml_store(aml_or(aml_name("CDW1"), aml_int(4), NULL),
-                                  aml_name("CDW1")));
+    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);
     aml_append(dev, method);
-- 
1.8.3.1

Re: [Qemu-devel] [PATCH v4 1/2] hw/arm/acpi: simplify AML bit and/or statement

[Igor Mammedov]

On Wed, 6 Mar 2019 21:36:56 +0800
Heyi Guo <guoheyi@huawei.com> wrote:

> The last argument of AML bit and/or statement is the target variable,
> so we don't need to use a NULL target and then an additional store
> operation; a single bit and/or statement is enough.

s: a single bit and/or : using just aml_and() or aml_and() "

With commit message fixed up:

Reviewed-by: Igor Mammedov <imammedo@redhat.com>

> 
> Cc: Shannon Zhao <shannon.zhaosl@gmail.com>
> Cc: Peter Maydell <peter.maydell@linaro.org>
> Cc: "Michael S. Tsirkin" <mst@redhat.com>
> Cc: Igor Mammedov <imammedo@redhat.com>
> Suggested-by: Igor Mammedov <imammedo@redhat.com>
> Signed-off-by: Heyi Guo <guoheyi@huawei.com>
> ---
>  hw/arm/virt-acpi-build.c | 16 ++++++++--------
>  1 file changed, 8 insertions(+), 8 deletions(-)
> 
> diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
> index d7e2e48..cebec4c 100644
> --- a/hw/arm/virt-acpi-build.c
> +++ b/hw/arm/virt-acpi-build.c
> @@ -265,17 +265,17 @@ static void acpi_dsdt_add_pci(Aml *scope, const MemMapEntry *memmap,
>          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")));
> -    aml_append(ifctx, aml_store(aml_and(aml_name("CTRL"), aml_int(0x1D), NULL),
> -                                aml_name("CTRL")));
> +    aml_append(ifctx, aml_and(aml_name("CTRL"), aml_int(0x1D),
> +                              aml_name("CTRL")));
>  
>      ifctx1 = aml_if(aml_lnot(aml_equal(aml_arg(1), aml_int(0x1))));
> -    aml_append(ifctx1, aml_store(aml_or(aml_name("CDW1"), aml_int(0x08), NULL),
> -                                 aml_name("CDW1")));
> +    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_store(aml_or(aml_name("CDW1"), aml_int(0x10), NULL),
> -                                 aml_name("CDW1")));
> +    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")));
> @@ -283,8 +283,8 @@ static void acpi_dsdt_add_pci(Aml *scope, const MemMapEntry *memmap,
>      aml_append(method, ifctx);
>  
>      elsectx = aml_else();
> -    aml_append(elsectx, aml_store(aml_or(aml_name("CDW1"), aml_int(4), NULL),
> -                                  aml_name("CDW1")));
> +    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);
>      aml_append(dev, method);

Re: [Qemu-devel] [PATCH v4 1/2] hw/arm/acpi: simplify AML bit and/or statement

[Heyi Guo]

On 2019/3/7 0:34, Igor Mammedov wrote:
> On Wed, 6 Mar 2019 21:36:56 +0800
> Heyi Guo <guoheyi@huawei.com> wrote:
>
>> The last argument of AML bit and/or statement is the target variable,
>> so we don't need to use a NULL target and then an additional store
>> operation; a single bit and/or statement is enough.
> s: a single bit and/or : using just aml_and() or aml_and() "
>
> With commit message fixed up:
>
> Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Thanks; have fixed it in v5.

Heyi

>
>> Cc: Shannon Zhao <shannon.zhaosl@gmail.com>
>> Cc: Peter Maydell <peter.maydell@linaro.org>
>> Cc: "Michael S. Tsirkin" <mst@redhat.com>
>> Cc: Igor Mammedov <imammedo@redhat.com>
>> Suggested-by: Igor Mammedov <imammedo@redhat.com>
>> Signed-off-by: Heyi Guo <guoheyi@huawei.com>
>> ---
>>   hw/arm/virt-acpi-build.c | 16 ++++++++--------
>>   1 file changed, 8 insertions(+), 8 deletions(-)
>>
>> diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
>> index d7e2e48..cebec4c 100644
>> --- a/hw/arm/virt-acpi-build.c
>> +++ b/hw/arm/virt-acpi-build.c
>> @@ -265,17 +265,17 @@ static void acpi_dsdt_add_pci(Aml *scope, const MemMapEntry *memmap,
>>           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")));
>> -    aml_append(ifctx, aml_store(aml_and(aml_name("CTRL"), aml_int(0x1D), NULL),
>> -                                aml_name("CTRL")));
>> +    aml_append(ifctx, aml_and(aml_name("CTRL"), aml_int(0x1D),
>> +                              aml_name("CTRL")));
>>   
>>       ifctx1 = aml_if(aml_lnot(aml_equal(aml_arg(1), aml_int(0x1))));
>> -    aml_append(ifctx1, aml_store(aml_or(aml_name("CDW1"), aml_int(0x08), NULL),
>> -                                 aml_name("CDW1")));
>> +    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_store(aml_or(aml_name("CDW1"), aml_int(0x10), NULL),
>> -                                 aml_name("CDW1")));
>> +    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")));
>> @@ -283,8 +283,8 @@ static void acpi_dsdt_add_pci(Aml *scope, const MemMapEntry *memmap,
>>       aml_append(method, ifctx);
>>   
>>       elsectx = aml_else();
>> -    aml_append(elsectx, aml_store(aml_or(aml_name("CDW1"), aml_int(4), NULL),
>> -                                  aml_name("CDW1")));
>> +    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);
>>       aml_append(dev, method);
>
> .
>

[Qemu-devel] [PATCH v4 2/2] hw/arm/acpi: enable SHPC native hot plug

[Heyi Guo]

After the introduction of generic PCIe root port and PCIe-PCI bridge,
we will also have SHPC controller on ARM, so just enable SHPC native
hot plug.

Cc: Shannon Zhao <shannon.zhaosl@gmail.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Heyi Guo <guoheyi@huawei.com>
---
 hw/arm/virt-acpi-build.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
index cebec4c..b6fef28 100644
--- a/hw/arm/virt-acpi-build.c
+++ b/hw/arm/virt-acpi-build.c
@@ -265,7 +265,12 @@ static void acpi_dsdt_add_pci(Aml *scope, const MemMapEntry *memmap,
         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")));
-    aml_append(ifctx, aml_and(aml_name("CTRL"), aml_int(0x1D),
+
+    /*
+     * Allow OS control for all 5 features:
+     * PCIeHotplug SHPCHotplug PME AER PCIeCapability.
+     */
+    aml_append(ifctx, aml_and(aml_name("CTRL"), aml_int(0x1F),
                               aml_name("CTRL")));
 
     ifctx1 = aml_if(aml_lnot(aml_equal(aml_arg(1), aml_int(0x1))));
-- 
1.8.3.1

Re: [Qemu-devel] [PATCH v4 2/2] hw/arm/acpi: enable SHPC native hot plug

[Igor Mammedov]

On Wed, 6 Mar 2019 21:36:57 +0800
Heyi Guo <guoheyi@huawei.com> wrote:

> After the introduction of generic PCIe root port and PCIe-PCI bridge,
> we will also have SHPC controller on ARM, so just enable SHPC native
> hot plug.
> 
> Cc: Shannon Zhao <shannon.zhaosl@gmail.com>
> Cc: Peter Maydell <peter.maydell@linaro.org>
> Cc: "Michael S. Tsirkin" <mst@redhat.com>
> Cc: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
> Signed-off-by: Heyi Guo <guoheyi@huawei.com>

Reviewed-by: Igor Mammedov <imammedo@redhat.com>

> ---
>  hw/arm/virt-acpi-build.c | 7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)
> 
> diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
> index cebec4c..b6fef28 100644
> --- a/hw/arm/virt-acpi-build.c
> +++ b/hw/arm/virt-acpi-build.c
> @@ -265,7 +265,12 @@ static void acpi_dsdt_add_pci(Aml *scope, const MemMapEntry *memmap,
>          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")));
> -    aml_append(ifctx, aml_and(aml_name("CTRL"), aml_int(0x1D),
> +
> +    /*
> +     * Allow OS control for all 5 features:
> +     * PCIeHotplug SHPCHotplug PME AER PCIeCapability.
> +     */
> +    aml_append(ifctx, aml_and(aml_name("CTRL"), aml_int(0x1F),
>                                aml_name("CTRL")));
>  
>      ifctx1 = aml_if(aml_lnot(aml_equal(aml_arg(1), aml_int(0x1))));

Re: [Qemu-devel] [PATCH v4 0/2] arm/acpi: simplify aml code and enable SHPC

[Igor Mammedov]

On Wed, 6 Mar 2019 21:36:55 +0800
Heyi Guo <guoheyi@huawei.com> wrote:

> After the introduction of generic PCIe root port and PCIe-PCI bridge, we will
> also have SHPC controller on ARM, and we don't support ACPI hot plug, so just
> enable SHPC native hot plug.
> 
> Igor also spotted the store operation outside of bit and/or is not necessary, so
> simply the code at first.

Since it's pretty close to soft-freeze ping Peter in 1-2 days,
otherwise patches might miss 4.0 release.

> 
> v4:
> - Improve the code indention.
> 
> Cc: Shannon Zhao <shannon.zhaosl@gmail.com>
> Cc: Peter Maydell <peter.maydell@linaro.org>
> Cc: "Michael S. Tsirkin" <mst@redhat.com>
> Cc: Igor Mammedov <imammedo@redhat.com>
> 
> Heyi Guo (2):
>   hw/arm/acpi: simplify AML bit and/or statement
>   hw/arm/acpi: enable SHPC native hot plug
> 
>  hw/arm/virt-acpi-build.c | 21 +++++++++++++--------
>  1 file changed, 13 insertions(+), 8 deletions(-)
>