[PATCH v6 12/14] hw/pci: Allow explicit function numbers in pci

Djordje Todorovic posted 14 patches 2 months, 2 weeks ago
There is a newer version of this series
[PATCH v6 12/14] hw/pci: Allow explicit function numbers in pci
Posted by Djordje Todorovic 2 months, 2 weeks ago
Since there is no pch_gbe emulation, we could be using func other
than 0 when adding new devices to specific boards.

Signed-off-by: Chao-ying Fu <cfu@mips.com>
Signed-off-by: Djordje Todorovic <djordje.todorovic@htecgroup.com>
---
 hw/pci/pci.c | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/hw/pci/pci.c b/hw/pci/pci.c
index f5ab510697..23f7f02837 100644
--- a/hw/pci/pci.c
+++ b/hw/pci/pci.c
@@ -974,14 +974,15 @@ static int pci_parse_devaddr(const char *addr, int *domp, int *busp,
 
     slot = val;
 
-    if (funcp != NULL) {
-        if (*e != '.')
+    if (funcp != NULL && *e != 0) {
+        if (*e != '.') {
             return -1;
-
+        }
         p = e + 1;
         val = strtoul(p, &e, 16);
-        if (e == p)
+        if (e == p) {
             return -1;
+        }
 
         func = val;
     }
@@ -2045,13 +2046,15 @@ bool pci_init_nic_in_slot(PCIBus *rootbus, const char *model,
     int dom, busnr, devfn;
     PCIDevice *pci_dev;
     unsigned slot;
+
     PCIBus *bus;
 
     if (!nd) {
         return false;
     }
 
-    if (!devaddr || pci_parse_devaddr(devaddr, &dom, &busnr, &slot, NULL) < 0) {
+    unsigned func;
+    if (!devaddr || pci_parse_devaddr(devaddr, &dom, &busnr, &slot, &func) < 0) {
         error_report("Invalid PCI device address %s for device %s",
                      devaddr, model);
         exit(1);
@@ -2062,7 +2065,7 @@ bool pci_init_nic_in_slot(PCIBus *rootbus, const char *model,
         exit(1);
     }
 
-    devfn = PCI_DEVFN(slot, 0);
+    devfn = PCI_DEVFN(slot, func);
 
     bus = pci_find_bus_nr(rootbus, busnr);
     if (!bus) {
-- 
2.34.1
Re: [PATCH v6 12/14] hw/pci: Allow explicit function numbers in pci
Posted by Philippe Mathieu-Daudé 1 month, 3 weeks ago
On 17/7/25 11:38, Djordje Todorovic wrote:
> Since there is no pch_gbe emulation, we could be using func other
> than 0 when adding new devices to specific boards.
> 
> Signed-off-by: Chao-ying Fu <cfu@mips.com>
> Signed-off-by: Djordje Todorovic <djordje.todorovic@htecgroup.com>
> ---
>   hw/pci/pci.c | 15 +++++++++------
>   1 file changed, 9 insertions(+), 6 deletions(-)
> 
> diff --git a/hw/pci/pci.c b/hw/pci/pci.c
> index f5ab510697..23f7f02837 100644
> --- a/hw/pci/pci.c
> +++ b/hw/pci/pci.c
> @@ -974,14 +974,15 @@ static int pci_parse_devaddr(const char *addr, int *domp, int *busp,
>   
>       slot = val;
>   
> -    if (funcp != NULL) {
> -        if (*e != '.')
> +    if (funcp != NULL && *e != 0) {
> +        if (*e != '.') {
>               return -1;
> -
> +        }
>           p = e + 1;
>           val = strtoul(p, &e, 16);
> -        if (e == p)
> +        if (e == p) {
>               return -1;
> +        }
>   
>           func = val;
>       }
> @@ -2045,13 +2046,15 @@ bool pci_init_nic_in_slot(PCIBus *rootbus, const char *model,
>       int dom, busnr, devfn;
>       PCIDevice *pci_dev;
>       unsigned slot;
> +

[*]

>       PCIBus *bus;
>   
>       if (!nd) {
>           return false;
>       }
>   
> -    if (!devaddr || pci_parse_devaddr(devaddr, &dom, &busnr, &slot, NULL) < 0) {
> +    unsigned func;

Declare 'func' earlier in [*], otherwise LGTM.

> +    if (!devaddr || pci_parse_devaddr(devaddr, &dom, &busnr, &slot, &func) < 0) {
>           error_report("Invalid PCI device address %s for device %s",
>                        devaddr, model);
>           exit(1);
> @@ -2062,7 +2065,7 @@ bool pci_init_nic_in_slot(PCIBus *rootbus, const char *model,
>           exit(1);
>       }
>   
> -    devfn = PCI_DEVFN(slot, 0);
> +    devfn = PCI_DEVFN(slot, func);
>   
>       bus = pci_find_bus_nr(rootbus, busnr);
>       if (!bus) {
Re: [PATCH v6 12/14] hw/pci: Allow explicit function numbers in pci
Posted by Djordje Todorovic 4 weeks ago
On 8. 8. 25. 18:29, Philippe Mathieu-Daudé wrote:
> CAUTION: This email originated from outside of the organization. Do 
> not click links or open attachments unless you recognize the sender 
> and know the content is safe.
>
>
> On 17/7/25 11:38, Djordje Todorovic wrote:
>> Since there is no pch_gbe emulation, we could be using func other
>> than 0 when adding new devices to specific boards.
>>
>> Signed-off-by: Chao-ying Fu <cfu@mips.com>
>> Signed-off-by: Djordje Todorovic <djordje.todorovic@htecgroup.com>
>> ---
>>   hw/pci/pci.c | 15 +++++++++------
>>   1 file changed, 9 insertions(+), 6 deletions(-)
>>
>> diff --git a/hw/pci/pci.c b/hw/pci/pci.c
>> index f5ab510697..23f7f02837 100644
>> --- a/hw/pci/pci.c
>> +++ b/hw/pci/pci.c
>> @@ -974,14 +974,15 @@ static int pci_parse_devaddr(const char *addr, 
>> int *domp, int *busp,
>>
>>       slot = val;
>>
>> -    if (funcp != NULL) {
>> -        if (*e != '.')
>> +    if (funcp != NULL && *e != 0) {
>> +        if (*e != '.') {
>>               return -1;
>> -
>> +        }
>>           p = e + 1;
>>           val = strtoul(p, &e, 16);
>> -        if (e == p)
>> +        if (e == p) {
>>               return -1;
>> +        }
>>
>>           func = val;
>>       }
>> @@ -2045,13 +2046,15 @@ bool pci_init_nic_in_slot(PCIBus *rootbus, 
>> const char *model,
>>       int dom, busnr, devfn;
>>       PCIDevice *pci_dev;
>>       unsigned slot;
>> +
>
> [*]
>
>>       PCIBus *bus;
>>
>>       if (!nd) {
>>           return false;
>>       }
>>
>> -    if (!devaddr || pci_parse_devaddr(devaddr, &dom, &busnr, &slot, 
>> NULL) < 0) {
>> +    unsigned func;
>
> Declare 'func' earlier in [*], otherwise LGTM.
>
>> +    if (!devaddr || pci_parse_devaddr(devaddr, &dom, &busnr, &slot, 
>> &func) < 0) {
>>           error_report("Invalid PCI device address %s for device %s",
>>                        devaddr, model);
>>           exit(1);
>> @@ -2062,7 +2065,7 @@ bool pci_init_nic_in_slot(PCIBus *rootbus, 
>> const char *model,
>>           exit(1);
>>       }
>>
>> -    devfn = PCI_DEVFN(slot, 0);
>> +    devfn = PCI_DEVFN(slot, func);
>>
>>       bus = pci_find_bus_nr(rootbus, busnr);
>>       if (!bus) {
>
Thank you! I will address this in v7.