Export gen_pci_init() API to create ECAM and initialized ECAM OPs
from PCIe driver which don't have way to populate driver_data as
just ECAM ops.

Signed-off-by: Mayank Rana <quic_mrana@quicinc.com>
---
 drivers/pci/controller/pci-host-common.c | 3 ++-
 include/linux/pci-ecam.h                 | 2 ++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/pci/controller/pci-host-common.c b/drivers/pci/controller/pci-host-common.c
index cf5f59a745b3..b9460a4c5b7e 100644
--- a/drivers/pci/controller/pci-host-common.c
+++ b/drivers/pci/controller/pci-host-common.c
@@ -20,7 +20,7 @@ static void gen_pci_unmap_cfg(void *ptr)
 	pci_ecam_free((struct pci_config_window *)ptr);
 }
 
-static struct pci_config_window *gen_pci_init(struct device *dev,
+struct pci_config_window *gen_pci_init(struct device *dev,
 		struct pci_host_bridge *bridge, const struct pci_ecam_ops *ops)
 {
 	int err;
@@ -48,6 +48,7 @@ static struct pci_config_window *gen_pci_init(struct device *dev,
 
 	return cfg;
 }
+EXPORT_SYMBOL_GPL(gen_pci_init);
 
 int pci_host_common_probe(struct platform_device *pdev)
 {
diff --git a/include/linux/pci-ecam.h b/include/linux/pci-ecam.h
index 3a4860bd2758..386c08349169 100644
--- a/include/linux/pci-ecam.h
+++ b/include/linux/pci-ecam.h
@@ -94,5 +94,7 @@ extern const struct pci_ecam_ops loongson_pci_ecam_ops; /* Loongson PCIe */
 /* for DT-based PCI controllers that support ECAM */
 int pci_host_common_probe(struct platform_device *pdev);
 void pci_host_common_remove(struct platform_device *pdev);
+struct pci_config_window *gen_pci_init(struct device *dev,
+		struct pci_host_bridge *bridge, const struct pci_ecam_ops *ops);
 #endif
 #endif
-- 
2.25.1

On Wed, Nov 06, 2024 at 02:13:39PM -0800, Mayank Rana wrote:
> Export gen_pci_init() API to create ECAM and initialized ECAM OPs
> from PCIe driver which don't have way to populate driver_data as
> just ECAM ops.
> 
> Signed-off-by: Mayank Rana <quic_mrana@quicinc.com>
> ---
>  drivers/pci/controller/pci-host-common.c | 3 ++-
>  include/linux/pci-ecam.h                 | 2 ++
>  2 files changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/pci/controller/pci-host-common.c b/drivers/pci/controller/pci-host-common.c
> index cf5f59a745b3..b9460a4c5b7e 100644
> --- a/drivers/pci/controller/pci-host-common.c
> +++ b/drivers/pci/controller/pci-host-common.c
> @@ -20,7 +20,7 @@ static void gen_pci_unmap_cfg(void *ptr)
>  	pci_ecam_free((struct pci_config_window *)ptr);
>  }
>  
> -static struct pci_config_window *gen_pci_init(struct device *dev,
> +struct pci_config_window *gen_pci_init(struct device *dev,

Please rename the API to something like 'pci_host_common_init()'.
'gen_pci_init()' is fine within the driver, but doesn't look good when exported
outside.

- Mani

>  		struct pci_host_bridge *bridge, const struct pci_ecam_ops *ops)
>  {
>  	int err;
> @@ -48,6 +48,7 @@ static struct pci_config_window *gen_pci_init(struct device *dev,
>  
>  	return cfg;
>  }
> +EXPORT_SYMBOL_GPL(gen_pci_init);
>  
>  int pci_host_common_probe(struct platform_device *pdev)
>  {
> diff --git a/include/linux/pci-ecam.h b/include/linux/pci-ecam.h
> index 3a4860bd2758..386c08349169 100644
> --- a/include/linux/pci-ecam.h
> +++ b/include/linux/pci-ecam.h
> @@ -94,5 +94,7 @@ extern const struct pci_ecam_ops loongson_pci_ecam_ops; /* Loongson PCIe */
>  /* for DT-based PCI controllers that support ECAM */
>  int pci_host_common_probe(struct platform_device *pdev);
>  void pci_host_common_remove(struct platform_device *pdev);
> +struct pci_config_window *gen_pci_init(struct device *dev,
> +		struct pci_host_bridge *bridge, const struct pci_ecam_ops *ops);
>  #endif
>  #endif
> -- 
> 2.25.1
> 

-- 
மணிவண்ணன் சதாசிவம்

On 11/15/2024 1:17 AM, Manivannan Sadhasivam wrote:
> On Wed, Nov 06, 2024 at 02:13:39PM -0800, Mayank Rana wrote:
>> Export gen_pci_init() API to create ECAM and initialized ECAM OPs
>> from PCIe driver which don't have way to populate driver_data as
>> just ECAM ops.
>>
>> Signed-off-by: Mayank Rana <quic_mrana@quicinc.com>
>> ---
>>   drivers/pci/controller/pci-host-common.c | 3 ++-
>>   include/linux/pci-ecam.h                 | 2 ++
>>   2 files changed, 4 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/pci/controller/pci-host-common.c b/drivers/pci/controller/pci-host-common.c
>> index cf5f59a745b3..b9460a4c5b7e 100644
>> --- a/drivers/pci/controller/pci-host-common.c
>> +++ b/drivers/pci/controller/pci-host-common.c
>> @@ -20,7 +20,7 @@ static void gen_pci_unmap_cfg(void *ptr)
>>   	pci_ecam_free((struct pci_config_window *)ptr);
>>   }
>>   
>> -static struct pci_config_window *gen_pci_init(struct device *dev,
>> +struct pci_config_window *gen_pci_init(struct device *dev,
> 
> Please rename the API to something like 'pci_host_common_init()'.
> 'gen_pci_init()' is fine within the driver, but doesn't look good when exported
> outside.
ACK

> - Mani
> 
>>   		struct pci_host_bridge *bridge, const struct pci_ecam_ops *ops)
>>   {
>>   	int err;
>> @@ -48,6 +48,7 @@ static struct pci_config_window *gen_pci_init(struct device *dev,
>>   
>>   	return cfg;
>>   }
>> +EXPORT_SYMBOL_GPL(gen_pci_init);
>>   
>>   int pci_host_common_probe(struct platform_device *pdev)
>>   {
>> diff --git a/include/linux/pci-ecam.h b/include/linux/pci-ecam.h
>> index 3a4860bd2758..386c08349169 100644
>> --- a/include/linux/pci-ecam.h
>> +++ b/include/linux/pci-ecam.h
>> @@ -94,5 +94,7 @@ extern const struct pci_ecam_ops loongson_pci_ecam_ops; /* Loongson PCIe */
>>   /* for DT-based PCI controllers that support ECAM */
>>   int pci_host_common_probe(struct platform_device *pdev);
>>   void pci_host_common_remove(struct platform_device *pdev);
>> +struct pci_config_window *gen_pci_init(struct device *dev,
>> +		struct pci_host_bridge *bridge, const struct pci_ecam_ops *ops);
>>   #endif
>>   #endif
>> -- 
>> 2.25.1
>>
>