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[PATCH] hw/pci-host: Use register definitions from PCI standard

Philippe Mathieu-Daudé posted 1 patch 3 years, 1 month ago
Patches applied successfully (tree, apply log)
git fetch https://github.com/patchew-project/qemu tags/patchew/20230105144142.51990-1-philmd@linaro.org
Maintainers: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>, "Hervé Poussineau" <hpoussin@reactos.org>
There is a newer version of this series
hw/pci-host/grackle.c  |  2 +-
hw/pci-host/raven.c    |  6 +++---
hw/pci-host/uninorth.c | 30 +++++++++++-------------------
3 files changed, 15 insertions(+), 23 deletions(-)
[PATCH] hw/pci-host: Use register definitions from PCI standard
Posted by Philippe Mathieu-Daudé 3 years, 1 month ago 
No need to document magic values when the definition names
from "standard-headers/linux/pci_regs.h" are self-explicit.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 hw/pci-host/grackle.c  |  2 +-
 hw/pci-host/raven.c    |  6 +++---
 hw/pci-host/uninorth.c | 30 +++++++++++-------------------
 3 files changed, 15 insertions(+), 23 deletions(-)

diff --git a/hw/pci-host/grackle.c b/hw/pci-host/grackle.c
index 95945ac0f4..2a45cc13c3 100644
--- a/hw/pci-host/grackle.c
+++ b/hw/pci-host/grackle.c
@@ -91,7 +91,7 @@ static void grackle_init(Object *obj)
 
 static void grackle_pci_realize(PCIDevice *d, Error **errp)
 {
-    d->config[0x09] = 0x01;
+    d->config[PCI_CLASS_PROG] = 0x01;
 }
 
 static void grackle_pci_class_init(ObjectClass *klass, void *data)
diff --git a/hw/pci-host/raven.c b/hw/pci-host/raven.c
index 7a105e4a63..c47259a851 100644
--- a/hw/pci-host/raven.c
+++ b/hw/pci-host/raven.c
@@ -329,9 +329,9 @@ static void raven_realize(PCIDevice *d, Error **errp)
     char *filename;
     int bios_size = -1;
 
-    d->config[0x0C] = 0x08; // cache_line_size
-    d->config[0x0D] = 0x10; // latency_timer
-    d->config[0x34] = 0x00; // capabilities_pointer
+    d->config[PCI_CACHE_LINE_SIZE] = 0x08;
+    d->config[PCI_LATENCY_TIMER] = 0x10;
+    d->config[PCI_CAPABILITY_LIST] = 0x00;
 
     memory_region_init_rom_nomigrate(&s->bios, OBJECT(s), "bios", BIOS_SIZE,
                                      &error_fatal);
diff --git a/hw/pci-host/uninorth.c b/hw/pci-host/uninorth.c
index 8396c91d59..342baff12a 100644
--- a/hw/pci-host/uninorth.c
+++ b/hw/pci-host/uninorth.c
@@ -277,11 +277,11 @@ static void pci_unin_internal_init(Object *obj)
 static void unin_main_pci_host_realize(PCIDevice *d, Error **errp)
 {
     /* cache_line_size */
-    d->config[0x0C] = 0x08;
+    d->config[PCI_CACHE_LINE_SIZE] = 0x08;
     /* latency_timer */
-    d->config[0x0D] = 0x10;
+    d->config[PCI_LATENCY_TIMER] = 0x10;
     /* capabilities_pointer */
-    d->config[0x34] = 0x00;
+    d->config[PCI_CAPABILITY_LIST] = 0x00;
 
     /*
      * Set kMacRISCPCIAddressSelect (0x48) register to indicate PCI
@@ -296,30 +296,22 @@ static void unin_main_pci_host_realize(PCIDevice *d, Error **errp)
 
 static void unin_agp_pci_host_realize(PCIDevice *d, Error **errp)
 {
-    /* cache_line_size */
-    d->config[0x0C] = 0x08;
-    /* latency_timer */
-    d->config[0x0D] = 0x10;
-    /* capabilities_pointer
-    d->config[0x34] = 0x80; */
+    d->config[PCI_CACHE_LINE_SIZE] = 0x08;
+    d->config[PCI_LATENCY_TIMER] = 0x10;
+    /* d->config[PCI_CAPABILITY_LIST] = 0x80; */
 }
 
 static void u3_agp_pci_host_realize(PCIDevice *d, Error **errp)
 {
-    /* cache line size */
-    d->config[0x0C] = 0x08;
-    /* latency timer */
-    d->config[0x0D] = 0x10;
+    d->config[PCI_CACHE_LINE_SIZE] = 0x08;
+    d->config[PCI_LATENCY_TIMER] = 0x10;
 }
 
 static void unin_internal_pci_host_realize(PCIDevice *d, Error **errp)
 {
-    /* cache_line_size */
-    d->config[0x0C] = 0x08;
-    /* latency_timer */
-    d->config[0x0D] = 0x10;
-    /* capabilities_pointer */
-    d->config[0x34] = 0x00;
+    d->config[PCI_CACHE_LINE_SIZE] = 0x08;
+    d->config[PCI_LATENCY_TIMER] = 0x10;
+    d->config[PCI_CAPABILITY_LIST] = 0x00;
 }
 
 static void unin_main_pci_host_class_init(ObjectClass *klass, void *data)
-- 
2.38.1
Re: [PATCH] hw/pci-host: Use register definitions from PCI standard
Posted by Mark Cave-Ayland 3 years, 1 month ago 
On 05/01/2023 14:41, Philippe Mathieu-Daudé wrote:

> No need to document magic values when the definition names
> from "standard-headers/linux/pci_regs.h" are self-explicit.
> 
> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
> ---
>   hw/pci-host/grackle.c  |  2 +-
>   hw/pci-host/raven.c    |  6 +++---
>   hw/pci-host/uninorth.c | 30 +++++++++++-------------------
>   3 files changed, 15 insertions(+), 23 deletions(-)
> 
> diff --git a/hw/pci-host/grackle.c b/hw/pci-host/grackle.c
> index 95945ac0f4..2a45cc13c3 100644
> --- a/hw/pci-host/grackle.c
> +++ b/hw/pci-host/grackle.c
> @@ -91,7 +91,7 @@ static void grackle_init(Object *obj)
>   
>   static void grackle_pci_realize(PCIDevice *d, Error **errp)
>   {
> -    d->config[0x09] = 0x01;
> +    d->config[PCI_CLASS_PROG] = 0x01;
>   }
>   
>   static void grackle_pci_class_init(ObjectClass *klass, void *data)
> diff --git a/hw/pci-host/raven.c b/hw/pci-host/raven.c
> index 7a105e4a63..c47259a851 100644
> --- a/hw/pci-host/raven.c
> +++ b/hw/pci-host/raven.c
> @@ -329,9 +329,9 @@ static void raven_realize(PCIDevice *d, Error **errp)
>       char *filename;
>       int bios_size = -1;
>   
> -    d->config[0x0C] = 0x08; // cache_line_size
> -    d->config[0x0D] = 0x10; // latency_timer
> -    d->config[0x34] = 0x00; // capabilities_pointer
> +    d->config[PCI_CACHE_LINE_SIZE] = 0x08;
> +    d->config[PCI_LATENCY_TIMER] = 0x10;
> +    d->config[PCI_CAPABILITY_LIST] = 0x00;
>   
>       memory_region_init_rom_nomigrate(&s->bios, OBJECT(s), "bios", BIOS_SIZE,
>                                        &error_fatal);
> diff --git a/hw/pci-host/uninorth.c b/hw/pci-host/uninorth.c
> index 8396c91d59..342baff12a 100644
> --- a/hw/pci-host/uninorth.c
> +++ b/hw/pci-host/uninorth.c
> @@ -277,11 +277,11 @@ static void pci_unin_internal_init(Object *obj)
>   static void unin_main_pci_host_realize(PCIDevice *d, Error **errp)
>   {
>       /* cache_line_size */
> -    d->config[0x0C] = 0x08;
> +    d->config[PCI_CACHE_LINE_SIZE] = 0x08;
>       /* latency_timer */
> -    d->config[0x0D] = 0x10;
> +    d->config[PCI_LATENCY_TIMER] = 0x10;
>       /* capabilities_pointer */
> -    d->config[0x34] = 0x00;
> +    d->config[PCI_CAPABILITY_LIST] = 0x00;
>   
>       /*
>        * Set kMacRISCPCIAddressSelect (0x48) register to indicate PCI
> @@ -296,30 +296,22 @@ static void unin_main_pci_host_realize(PCIDevice *d, Error **errp)
>   
>   static void unin_agp_pci_host_realize(PCIDevice *d, Error **errp)
>   {
> -    /* cache_line_size */
> -    d->config[0x0C] = 0x08;
> -    /* latency_timer */
> -    d->config[0x0D] = 0x10;
> -    /* capabilities_pointer
> -    d->config[0x34] = 0x80; */
> +    d->config[PCI_CACHE_LINE_SIZE] = 0x08;
> +    d->config[PCI_LATENCY_TIMER] = 0x10;
> +    /* d->config[PCI_CAPABILITY_LIST] = 0x80; */
>   }
>   
>   static void u3_agp_pci_host_realize(PCIDevice *d, Error **errp)
>   {
> -    /* cache line size */
> -    d->config[0x0C] = 0x08;
> -    /* latency timer */
> -    d->config[0x0D] = 0x10;
> +    d->config[PCI_CACHE_LINE_SIZE] = 0x08;
> +    d->config[PCI_LATENCY_TIMER] = 0x10;
>   }
>   
>   static void unin_internal_pci_host_realize(PCIDevice *d, Error **errp)
>   {
> -    /* cache_line_size */
> -    d->config[0x0C] = 0x08;
> -    /* latency_timer */
> -    d->config[0x0D] = 0x10;
> -    /* capabilities_pointer */
> -    d->config[0x34] = 0x00;
> +    d->config[PCI_CACHE_LINE_SIZE] = 0x08;
> +    d->config[PCI_LATENCY_TIMER] = 0x10;
> +    d->config[PCI_CAPABILITY_LIST] = 0x00;
>   }
>   
>   static void unin_main_pci_host_class_init(ObjectClass *klass, void *data)

Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>


ATB,

Mark.
Re: [PATCH] hw/pci-host: Use register definitions from PCI standard
Posted by BALATON Zoltan 3 years, 1 month ago 
On Thu, 5 Jan 2023, Philippe Mathieu-Daudé wrote:
> No need to document magic values when the definition names
> from "standard-headers/linux/pci_regs.h" are self-explicit.
>
> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
> ---
> hw/pci-host/grackle.c  |  2 +-
> hw/pci-host/raven.c    |  6 +++---
> hw/pci-host/uninorth.c | 30 +++++++++++-------------------
> 3 files changed, 15 insertions(+), 23 deletions(-)
>
> diff --git a/hw/pci-host/grackle.c b/hw/pci-host/grackle.c
> index 95945ac0f4..2a45cc13c3 100644
> --- a/hw/pci-host/grackle.c
> +++ b/hw/pci-host/grackle.c
> @@ -91,7 +91,7 @@ static void grackle_init(Object *obj)
>
> static void grackle_pci_realize(PCIDevice *d, Error **errp)
> {
> -    d->config[0x09] = 0x01;
> +    d->config[PCI_CLASS_PROG] = 0x01;
> }
>
> static void grackle_pci_class_init(ObjectClass *klass, void *data)
> diff --git a/hw/pci-host/raven.c b/hw/pci-host/raven.c
> index 7a105e4a63..c47259a851 100644
> --- a/hw/pci-host/raven.c
> +++ b/hw/pci-host/raven.c
> @@ -329,9 +329,9 @@ static void raven_realize(PCIDevice *d, Error **errp)
>     char *filename;
>     int bios_size = -1;
>
> -    d->config[0x0C] = 0x08; // cache_line_size
> -    d->config[0x0D] = 0x10; // latency_timer
> -    d->config[0x34] = 0x00; // capabilities_pointer
> +    d->config[PCI_CACHE_LINE_SIZE] = 0x08;
> +    d->config[PCI_LATENCY_TIMER] = 0x10;
> +    d->config[PCI_CAPABILITY_LIST] = 0x00;
>
>     memory_region_init_rom_nomigrate(&s->bios, OBJECT(s), "bios", BIOS_SIZE,
>                                      &error_fatal);
> diff --git a/hw/pci-host/uninorth.c b/hw/pci-host/uninorth.c
> index 8396c91d59..342baff12a 100644
> --- a/hw/pci-host/uninorth.c
> +++ b/hw/pci-host/uninorth.c
> @@ -277,11 +277,11 @@ static void pci_unin_internal_init(Object *obj)
> static void unin_main_pci_host_realize(PCIDevice *d, Error **errp)
> {
>     /* cache_line_size */
> -    d->config[0x0C] = 0x08;
> +    d->config[PCI_CACHE_LINE_SIZE] = 0x08;
>     /* latency_timer */
> -    d->config[0x0D] = 0x10;
> +    d->config[PCI_LATENCY_TIMER] = 0x10;
>     /* capabilities_pointer */
> -    d->config[0x34] = 0x00;
> +    d->config[PCI_CAPABILITY_LIST] = 0x00;

Did you mean to remove the comments here as well?

Regards,
BALATON Zoltan

>     /*
>      * Set kMacRISCPCIAddressSelect (0x48) register to indicate PCI
> @@ -296,30 +296,22 @@ static void unin_main_pci_host_realize(PCIDevice *d, Error **errp)
>
> static void unin_agp_pci_host_realize(PCIDevice *d, Error **errp)
> {
> -    /* cache_line_size */
> -    d->config[0x0C] = 0x08;
> -    /* latency_timer */
> -    d->config[0x0D] = 0x10;
> -    /* capabilities_pointer
> -    d->config[0x34] = 0x80; */
> +    d->config[PCI_CACHE_LINE_SIZE] = 0x08;
> +    d->config[PCI_LATENCY_TIMER] = 0x10;
> +    /* d->config[PCI_CAPABILITY_LIST] = 0x80; */
> }
>
> static void u3_agp_pci_host_realize(PCIDevice *d, Error **errp)
> {
> -    /* cache line size */
> -    d->config[0x0C] = 0x08;
> -    /* latency timer */
> -    d->config[0x0D] = 0x10;
> +    d->config[PCI_CACHE_LINE_SIZE] = 0x08;
> +    d->config[PCI_LATENCY_TIMER] = 0x10;
> }
>
> static void unin_internal_pci_host_realize(PCIDevice *d, Error **errp)
> {
> -    /* cache_line_size */
> -    d->config[0x0C] = 0x08;
> -    /* latency_timer */
> -    d->config[0x0D] = 0x10;
> -    /* capabilities_pointer */
> -    d->config[0x34] = 0x00;
> +    d->config[PCI_CACHE_LINE_SIZE] = 0x08;
> +    d->config[PCI_LATENCY_TIMER] = 0x10;
> +    d->config[PCI_CAPABILITY_LIST] = 0x00;
> }
>
> static void unin_main_pci_host_class_init(ObjectClass *klass, void *data)
>
Re: [PATCH] hw/pci-host: Use register definitions from PCI standard
Posted by Bernhard Beschow 3 years, 1 month ago 

Am 5. Januar 2023 16:02:48 UTC schrieb BALATON Zoltan <balaton@eik.bme.hu>:
>On Thu, 5 Jan 2023, Philippe Mathieu-Daudé wrote:
>> No need to document magic values when the definition names
>> from "standard-headers/linux/pci_regs.h" are self-explicit.
>> 
>> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
>> ---
>> hw/pci-host/grackle.c  |  2 +-
>> hw/pci-host/raven.c    |  6 +++---
>> hw/pci-host/uninorth.c | 30 +++++++++++-------------------
>> 3 files changed, 15 insertions(+), 23 deletions(-)
>> 
>> diff --git a/hw/pci-host/grackle.c b/hw/pci-host/grackle.c
>> index 95945ac0f4..2a45cc13c3 100644
>> --- a/hw/pci-host/grackle.c
>> +++ b/hw/pci-host/grackle.c
>> @@ -91,7 +91,7 @@ static void grackle_init(Object *obj)
>> 
>> static void grackle_pci_realize(PCIDevice *d, Error **errp)
>> {
>> -    d->config[0x09] = 0x01;
>> +    d->config[PCI_CLASS_PROG] = 0x01;
>> }
>> 
>> static void grackle_pci_class_init(ObjectClass *klass, void *data)
>> diff --git a/hw/pci-host/raven.c b/hw/pci-host/raven.c
>> index 7a105e4a63..c47259a851 100644
>> --- a/hw/pci-host/raven.c
>> +++ b/hw/pci-host/raven.c
>> @@ -329,9 +329,9 @@ static void raven_realize(PCIDevice *d, Error **errp)
>>     char *filename;
>>     int bios_size = -1;
>> 
>> -    d->config[0x0C] = 0x08; // cache_line_size
>> -    d->config[0x0D] = 0x10; // latency_timer
>> -    d->config[0x34] = 0x00; // capabilities_pointer
>> +    d->config[PCI_CACHE_LINE_SIZE] = 0x08;
>> +    d->config[PCI_LATENCY_TIMER] = 0x10;
>> +    d->config[PCI_CAPABILITY_LIST] = 0x00;
>> 
>>     memory_region_init_rom_nomigrate(&s->bios, OBJECT(s), "bios", BIOS_SIZE,
>>                                      &error_fatal);
>> diff --git a/hw/pci-host/uninorth.c b/hw/pci-host/uninorth.c
>> index 8396c91d59..342baff12a 100644
>> --- a/hw/pci-host/uninorth.c
>> +++ b/hw/pci-host/uninorth.c
>> @@ -277,11 +277,11 @@ static void pci_unin_internal_init(Object *obj)
>> static void unin_main_pci_host_realize(PCIDevice *d, Error **errp)
>> {
>>     /* cache_line_size */
>> -    d->config[0x0C] = 0x08;
>> +    d->config[PCI_CACHE_LINE_SIZE] = 0x08;
>>     /* latency_timer */
>> -    d->config[0x0D] = 0x10;
>> +    d->config[PCI_LATENCY_TIMER] = 0x10;
>>     /* capabilities_pointer */
>> -    d->config[0x34] = 0x00;
>> +    d->config[PCI_CAPABILITY_LIST] = 0x00;
>
>Did you mean to remove the comments here as well?

Removing the comments makes sense to me since they're redundant to the enums.

Best regards,
Bernhard

>
>Regards,
>BALATON Zoltan
>
>>     /*
>>      * Set kMacRISCPCIAddressSelect (0x48) register to indicate PCI
>> @@ -296,30 +296,22 @@ static void unin_main_pci_host_realize(PCIDevice *d, Error **errp)
>> 
>> static void unin_agp_pci_host_realize(PCIDevice *d, Error **errp)
>> {
>> -    /* cache_line_size */
>> -    d->config[0x0C] = 0x08;
>> -    /* latency_timer */
>> -    d->config[0x0D] = 0x10;
>> -    /* capabilities_pointer
>> -    d->config[0x34] = 0x80; */
>> +    d->config[PCI_CACHE_LINE_SIZE] = 0x08;
>> +    d->config[PCI_LATENCY_TIMER] = 0x10;
>> +    /* d->config[PCI_CAPABILITY_LIST] = 0x80; */
>> }
>> 
>> static void u3_agp_pci_host_realize(PCIDevice *d, Error **errp)
>> {
>> -    /* cache line size */
>> -    d->config[0x0C] = 0x08;
>> -    /* latency timer */
>> -    d->config[0x0D] = 0x10;
>> +    d->config[PCI_CACHE_LINE_SIZE] = 0x08;
>> +    d->config[PCI_LATENCY_TIMER] = 0x10;
>> }
>> 
>> static void unin_internal_pci_host_realize(PCIDevice *d, Error **errp)
>> {
>> -    /* cache_line_size */
>> -    d->config[0x0C] = 0x08;
>> -    /* latency_timer */
>> -    d->config[0x0D] = 0x10;
>> -    /* capabilities_pointer */
>> -    d->config[0x34] = 0x00;
>> +    d->config[PCI_CACHE_LINE_SIZE] = 0x08;
>> +    d->config[PCI_LATENCY_TIMER] = 0x10;
>> +    d->config[PCI_CAPABILITY_LIST] = 0x00;
>> }
>> 
>> static void unin_main_pci_host_class_init(ObjectClass *klass, void *data)
>>
Re: [PATCH] hw/pci-host: Use register definitions from PCI standard
Posted by Philippe Mathieu-Daudé 3 years, 1 month ago 
On 5/1/23 17:02, BALATON Zoltan wrote:
> On Thu, 5 Jan 2023, Philippe Mathieu-Daudé wrote:
>> No need to document magic values when the definition names
>> from "standard-headers/linux/pci_regs.h" are self-explicit.
>>
>> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
>> ---
>> hw/pci-host/grackle.c  |  2 +-
>> hw/pci-host/raven.c    |  6 +++---
>> hw/pci-host/uninorth.c | 30 +++++++++++-------------------
>> 3 files changed, 15 insertions(+), 23 deletions(-)


>> diff --git a/hw/pci-host/uninorth.c b/hw/pci-host/uninorth.c
>> index 8396c91d59..342baff12a 100644
>> --- a/hw/pci-host/uninorth.c
>> +++ b/hw/pci-host/uninorth.c
>> @@ -277,11 +277,11 @@ static void pci_unin_internal_init(Object *obj)
>> static void unin_main_pci_host_realize(PCIDevice *d, Error **errp)
>> {
>>     /* cache_line_size */
>> -    d->config[0x0C] = 0x08;
>> +    d->config[PCI_CACHE_LINE_SIZE] = 0x08;
>>     /* latency_timer */
>> -    d->config[0x0D] = 0x10;
>> +    d->config[PCI_LATENCY_TIMER] = 0x10;
>>     /* capabilities_pointer */
>> -    d->config[0x34] = 0x00;
>> +    d->config[PCI_CAPABILITY_LIST] = 0x00;
> 
> Did you mean to remove the comments here as well?

Good point, thanks!

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