diff mbox series

[PATCH-for-9.1,v2,2/2] hw/pci-host/gt64120: Set PCI base address register write mask

Message ID 20240801145630.52680-3-philmd@linaro.org (mailing list archive)
State New, archived
Headers show
Series hw/pci-host/gt64120: Set PCI base address register write mask | expand

Commit Message

Philippe Mathieu-Daudé Aug. 1, 2024, 2:56 p.m. UTC 
When booting Linux we see:

  PCI host bridge to bus 0000:00
  pci_bus 0000:00: root bus resource [mem 0x10000000-0x17ffffff]
  pci_bus 0000:00: root bus resource [io  0x1000-0x1fffff]
  pci_bus 0000:00: No busn resource found for root bus, will use [bus 00-ff]
  pci 0000:00:00.0: [11ab:4620] type 00 class 0x060000
  pci 0000:00:00.0: [Firmware Bug]: reg 0x14: invalid BAR (can't size)
  pci 0000:00:00.0: [Firmware Bug]: reg 0x18: invalid BAR (can't size)
  pci 0000:00:00.0: [Firmware Bug]: reg 0x1c: invalid BAR (can't size)
  pci 0000:00:00.0: [Firmware Bug]: reg 0x20: invalid BAR (can't size)
  pci 0000:00:00.0: [Firmware Bug]: reg 0x24: invalid BAR (can't size)

This is due to missing base address register write mask.
Add it to get:

  PCI host bridge to bus 0000:00
  pci_bus 0000:00: root bus resource [mem 0x10000000-0x17ffffff]
  pci_bus 0000:00: root bus resource [io  0x1000-0x1fffff]
  pci_bus 0000:00: No busn resource found for root bus, will use [bus 00-ff]
  pci 0000:00:00.0: [11ab:4620] type 00 class 0x060000
  pci 0000:00:00.0: reg 0x10: [mem 0x00000000-0x00000fff pref]
  pci 0000:00:00.0: reg 0x14: [mem 0x01000000-0x01000fff pref]
  pci 0000:00:00.0: reg 0x18: [mem 0x1c000000-0x1c000fff]
  pci 0000:00:00.0: reg 0x1c: [mem 0x1f000000-0x1f000fff]
  pci 0000:00:00.0: reg 0x20: [mem 0x1be00000-0x1be00fff]
  pci 0000:00:00.0: reg 0x24: [io  0x14000000-0x14000007]

Mention the datasheet referenced. Remove the "Malta assumptions ahead"
comment since the reset values from the datasheet are used.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 hw/pci-host/gt64120.c | 7 +++++++
 1 file changed, 7 insertions(+)

Comments

Philippe Mathieu-Daudé Aug. 1, 2024, 2:59 p.m. UTC | #1 
On 1/8/24 16:56, Philippe Mathieu-Daudé wrote:
> When booting Linux we see:
> 
>    PCI host bridge to bus 0000:00
>    pci_bus 0000:00: root bus resource [mem 0x10000000-0x17ffffff]
>    pci_bus 0000:00: root bus resource [io  0x1000-0x1fffff]
>    pci_bus 0000:00: No busn resource found for root bus, will use [bus 00-ff]
>    pci 0000:00:00.0: [11ab:4620] type 00 class 0x060000
>    pci 0000:00:00.0: [Firmware Bug]: reg 0x14: invalid BAR (can't size)
>    pci 0000:00:00.0: [Firmware Bug]: reg 0x18: invalid BAR (can't size)
>    pci 0000:00:00.0: [Firmware Bug]: reg 0x1c: invalid BAR (can't size)
>    pci 0000:00:00.0: [Firmware Bug]: reg 0x20: invalid BAR (can't size)
>    pci 0000:00:00.0: [Firmware Bug]: reg 0x24: invalid BAR (can't size)
> 
> This is due to missing base address register write mask.
> Add it to get:
> 
>    PCI host bridge to bus 0000:00
>    pci_bus 0000:00: root bus resource [mem 0x10000000-0x17ffffff]
>    pci_bus 0000:00: root bus resource [io  0x1000-0x1fffff]
>    pci_bus 0000:00: No busn resource found for root bus, will use [bus 00-ff]
>    pci 0000:00:00.0: [11ab:4620] type 00 class 0x060000
>    pci 0000:00:00.0: reg 0x10: [mem 0x00000000-0x00000fff pref]
>    pci 0000:00:00.0: reg 0x14: [mem 0x01000000-0x01000fff pref]
>    pci 0000:00:00.0: reg 0x18: [mem 0x1c000000-0x1c000fff]
>    pci 0000:00:00.0: reg 0x1c: [mem 0x1f000000-0x1f000fff]
>    pci 0000:00:00.0: reg 0x20: [mem 0x1be00000-0x1be00fff]
>    pci 0000:00:00.0: reg 0x24: [io  0x14000000-0x14000007]
> 
> Mention the datasheet referenced. Remove the "Malta assumptions ahead"
> comment since the reset values from the datasheet are used.

Argh this comment belongs to the previous patch :/

> 
> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
> ---
>   hw/pci-host/gt64120.c | 7 +++++++
>   1 file changed, 7 insertions(+)
Michael S. Tsirkin Aug. 1, 2024, 3:02 p.m. UTC | #2 
On Thu, Aug 01, 2024 at 04:56:30PM +0200, Philippe Mathieu-Daudé wrote:
> When booting Linux we see:
> 
>   PCI host bridge to bus 0000:00
>   pci_bus 0000:00: root bus resource [mem 0x10000000-0x17ffffff]
>   pci_bus 0000:00: root bus resource [io  0x1000-0x1fffff]
>   pci_bus 0000:00: No busn resource found for root bus, will use [bus 00-ff]
>   pci 0000:00:00.0: [11ab:4620] type 00 class 0x060000
>   pci 0000:00:00.0: [Firmware Bug]: reg 0x14: invalid BAR (can't size)
>   pci 0000:00:00.0: [Firmware Bug]: reg 0x18: invalid BAR (can't size)
>   pci 0000:00:00.0: [Firmware Bug]: reg 0x1c: invalid BAR (can't size)
>   pci 0000:00:00.0: [Firmware Bug]: reg 0x20: invalid BAR (can't size)
>   pci 0000:00:00.0: [Firmware Bug]: reg 0x24: invalid BAR (can't size)
> 
> This is due to missing base address register write mask.
> Add it to get:
> 
>   PCI host bridge to bus 0000:00
>   pci_bus 0000:00: root bus resource [mem 0x10000000-0x17ffffff]
>   pci_bus 0000:00: root bus resource [io  0x1000-0x1fffff]
>   pci_bus 0000:00: No busn resource found for root bus, will use [bus 00-ff]
>   pci 0000:00:00.0: [11ab:4620] type 00 class 0x060000
>   pci 0000:00:00.0: reg 0x10: [mem 0x00000000-0x00000fff pref]
>   pci 0000:00:00.0: reg 0x14: [mem 0x01000000-0x01000fff pref]
>   pci 0000:00:00.0: reg 0x18: [mem 0x1c000000-0x1c000fff]
>   pci 0000:00:00.0: reg 0x1c: [mem 0x1f000000-0x1f000fff]
>   pci 0000:00:00.0: reg 0x20: [mem 0x1be00000-0x1be00fff]
>   pci 0000:00:00.0: reg 0x24: [io  0x14000000-0x14000007]
> 
> Mention the datasheet referenced. Remove the "Malta assumptions ahead"
> comment since the reset values from the datasheet are used.
> 
> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
> ---
>  hw/pci-host/gt64120.c | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/hw/pci-host/gt64120.c b/hw/pci-host/gt64120.c
> index b68d647753..344baf55db 100644
> --- a/hw/pci-host/gt64120.c
> +++ b/hw/pci-host/gt64120.c
> @@ -1224,6 +1224,13 @@ static void gt64120_pci_reset_hold(Object *obj, ResetType type)
>                   PCI_STATUS_FAST_BACK | PCI_STATUS_DEVSEL_MEDIUM);
>      pci_config_set_prog_interface(d->config, 0);
>  
> +    pci_set_long(d->wmask + PCI_BASE_ADDRESS_0, 0xfffff009);
> +    pci_set_long(d->wmask + PCI_BASE_ADDRESS_1, 0xfffff009);
> +    pci_set_long(d->wmask + PCI_BASE_ADDRESS_2, 0xfffff009);
> +    pci_set_long(d->wmask + PCI_BASE_ADDRESS_3, 0xfffff009);
> +    pci_set_long(d->wmask + PCI_BASE_ADDRESS_4, 0xfffff009);
> +    pci_set_long(d->wmask + PCI_BASE_ADDRESS_5, 0xfffff001);
> +
>      pci_set_long(d->config + PCI_BASE_ADDRESS_0, 0x00000008);
>      pci_set_long(d->config + PCI_BASE_ADDRESS_1, 0x01000008);
>      pci_set_long(d->config + PCI_BASE_ADDRESS_2, 0x1c000000);


if you are tweaking wmask, I think migration will fail.
So you have to make this depend on machine property, and
put in compat machinery.

> -- 
> 2.45.2
Michael S. Tsirkin Aug. 1, 2024, 3:03 p.m. UTC | #3 
On Thu, Aug 01, 2024 at 04:56:30PM +0200, Philippe Mathieu-Daudé wrote:
> When booting Linux we see:
> 
>   PCI host bridge to bus 0000:00
>   pci_bus 0000:00: root bus resource [mem 0x10000000-0x17ffffff]
>   pci_bus 0000:00: root bus resource [io  0x1000-0x1fffff]
>   pci_bus 0000:00: No busn resource found for root bus, will use [bus 00-ff]
>   pci 0000:00:00.0: [11ab:4620] type 00 class 0x060000
>   pci 0000:00:00.0: [Firmware Bug]: reg 0x14: invalid BAR (can't size)
>   pci 0000:00:00.0: [Firmware Bug]: reg 0x18: invalid BAR (can't size)
>   pci 0000:00:00.0: [Firmware Bug]: reg 0x1c: invalid BAR (can't size)
>   pci 0000:00:00.0: [Firmware Bug]: reg 0x20: invalid BAR (can't size)
>   pci 0000:00:00.0: [Firmware Bug]: reg 0x24: invalid BAR (can't size)
> 
> This is due to missing base address register write mask.
> Add it to get:
> 
>   PCI host bridge to bus 0000:00
>   pci_bus 0000:00: root bus resource [mem 0x10000000-0x17ffffff]
>   pci_bus 0000:00: root bus resource [io  0x1000-0x1fffff]
>   pci_bus 0000:00: No busn resource found for root bus, will use [bus 00-ff]
>   pci 0000:00:00.0: [11ab:4620] type 00 class 0x060000
>   pci 0000:00:00.0: reg 0x10: [mem 0x00000000-0x00000fff pref]
>   pci 0000:00:00.0: reg 0x14: [mem 0x01000000-0x01000fff pref]
>   pci 0000:00:00.0: reg 0x18: [mem 0x1c000000-0x1c000fff]
>   pci 0000:00:00.0: reg 0x1c: [mem 0x1f000000-0x1f000fff]
>   pci 0000:00:00.0: reg 0x20: [mem 0x1be00000-0x1be00fff]
>   pci 0000:00:00.0: reg 0x24: [io  0x14000000-0x14000007]
> 
> Mention the datasheet referenced. Remove the "Malta assumptions ahead"
> comment since the reset values from the datasheet are used.
> 
> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
> ---
>  hw/pci-host/gt64120.c | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/hw/pci-host/gt64120.c b/hw/pci-host/gt64120.c
> index b68d647753..344baf55db 100644
> --- a/hw/pci-host/gt64120.c
> +++ b/hw/pci-host/gt64120.c
> @@ -1224,6 +1224,13 @@ static void gt64120_pci_reset_hold(Object *obj, ResetType type)
>                   PCI_STATUS_FAST_BACK | PCI_STATUS_DEVSEL_MEDIUM);
>      pci_config_set_prog_interface(d->config, 0);
>  
> +    pci_set_long(d->wmask + PCI_BASE_ADDRESS_0, 0xfffff009);
> +    pci_set_long(d->wmask + PCI_BASE_ADDRESS_1, 0xfffff009);
> +    pci_set_long(d->wmask + PCI_BASE_ADDRESS_2, 0xfffff009);
> +    pci_set_long(d->wmask + PCI_BASE_ADDRESS_3, 0xfffff009);
> +    pci_set_long(d->wmask + PCI_BASE_ADDRESS_4, 0xfffff009);
> +    pci_set_long(d->wmask + PCI_BASE_ADDRESS_5, 0xfffff001);
> +

weird to change wmask on reset.

>      pci_set_long(d->config + PCI_BASE_ADDRESS_0, 0x00000008);
>      pci_set_long(d->config + PCI_BASE_ADDRESS_1, 0x01000008);
>      pci_set_long(d->config + PCI_BASE_ADDRESS_2, 0x1c000000);
> -- 
> 2.45.2
Philippe Mathieu-Daudé Aug. 1, 2024, 4:51 p.m. UTC | #4 
On 1/8/24 17:02, Michael S. Tsirkin wrote:
> On Thu, Aug 01, 2024 at 04:56:30PM +0200, Philippe Mathieu-Daudé wrote:
>> When booting Linux we see:
>>
>>    PCI host bridge to bus 0000:00
>>    pci_bus 0000:00: root bus resource [mem 0x10000000-0x17ffffff]
>>    pci_bus 0000:00: root bus resource [io  0x1000-0x1fffff]
>>    pci_bus 0000:00: No busn resource found for root bus, will use [bus 00-ff]
>>    pci 0000:00:00.0: [11ab:4620] type 00 class 0x060000
>>    pci 0000:00:00.0: [Firmware Bug]: reg 0x14: invalid BAR (can't size)
>>    pci 0000:00:00.0: [Firmware Bug]: reg 0x18: invalid BAR (can't size)
>>    pci 0000:00:00.0: [Firmware Bug]: reg 0x1c: invalid BAR (can't size)
>>    pci 0000:00:00.0: [Firmware Bug]: reg 0x20: invalid BAR (can't size)
>>    pci 0000:00:00.0: [Firmware Bug]: reg 0x24: invalid BAR (can't size)
>>
>> This is due to missing base address register write mask.
>> Add it to get:
>>
>>    PCI host bridge to bus 0000:00
>>    pci_bus 0000:00: root bus resource [mem 0x10000000-0x17ffffff]
>>    pci_bus 0000:00: root bus resource [io  0x1000-0x1fffff]
>>    pci_bus 0000:00: No busn resource found for root bus, will use [bus 00-ff]
>>    pci 0000:00:00.0: [11ab:4620] type 00 class 0x060000
>>    pci 0000:00:00.0: reg 0x10: [mem 0x00000000-0x00000fff pref]
>>    pci 0000:00:00.0: reg 0x14: [mem 0x01000000-0x01000fff pref]
>>    pci 0000:00:00.0: reg 0x18: [mem 0x1c000000-0x1c000fff]
>>    pci 0000:00:00.0: reg 0x1c: [mem 0x1f000000-0x1f000fff]
>>    pci 0000:00:00.0: reg 0x20: [mem 0x1be00000-0x1be00fff]
>>    pci 0000:00:00.0: reg 0x24: [io  0x14000000-0x14000007]
>>
>> Mention the datasheet referenced. Remove the "Malta assumptions ahead"
>> comment since the reset values from the datasheet are used.
>>
>> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
>> ---
>>   hw/pci-host/gt64120.c | 7 +++++++
>>   1 file changed, 7 insertions(+)
>>
>> diff --git a/hw/pci-host/gt64120.c b/hw/pci-host/gt64120.c
>> index b68d647753..344baf55db 100644
>> --- a/hw/pci-host/gt64120.c
>> +++ b/hw/pci-host/gt64120.c
>> @@ -1224,6 +1224,13 @@ static void gt64120_pci_reset_hold(Object *obj, ResetType type)
>>                    PCI_STATUS_FAST_BACK | PCI_STATUS_DEVSEL_MEDIUM);
>>       pci_config_set_prog_interface(d->config, 0);
>>   
>> +    pci_set_long(d->wmask + PCI_BASE_ADDRESS_0, 0xfffff009);
>> +    pci_set_long(d->wmask + PCI_BASE_ADDRESS_1, 0xfffff009);
>> +    pci_set_long(d->wmask + PCI_BASE_ADDRESS_2, 0xfffff009);
>> +    pci_set_long(d->wmask + PCI_BASE_ADDRESS_3, 0xfffff009);
>> +    pci_set_long(d->wmask + PCI_BASE_ADDRESS_4, 0xfffff009);
>> +    pci_set_long(d->wmask + PCI_BASE_ADDRESS_5, 0xfffff001);
>> +
>>       pci_set_long(d->config + PCI_BASE_ADDRESS_0, 0x00000008);
>>       pci_set_long(d->config + PCI_BASE_ADDRESS_1, 0x01000008);
>>       pci_set_long(d->config + PCI_BASE_ADDRESS_2, 0x1c000000);
> 
> 
> if you are tweaking wmask, I think migration will fail.
> So you have to make this depend on machine property, and
> put in compat machinery.

Fortunately we don't need because this device is only meant to
be used by MIPS machines which aren't versioned.
Philippe Mathieu-Daudé Aug. 1, 2024, 4:51 p.m. UTC | #5 
On 1/8/24 17:02, Michael S. Tsirkin wrote:
> On Thu, Aug 01, 2024 at 04:56:30PM +0200, Philippe Mathieu-Daudé wrote:
>> When booting Linux we see:
>>
>>    PCI host bridge to bus 0000:00
>>    pci_bus 0000:00: root bus resource [mem 0x10000000-0x17ffffff]
>>    pci_bus 0000:00: root bus resource [io  0x1000-0x1fffff]
>>    pci_bus 0000:00: No busn resource found for root bus, will use [bus 00-ff]
>>    pci 0000:00:00.0: [11ab:4620] type 00 class 0x060000
>>    pci 0000:00:00.0: [Firmware Bug]: reg 0x14: invalid BAR (can't size)
>>    pci 0000:00:00.0: [Firmware Bug]: reg 0x18: invalid BAR (can't size)
>>    pci 0000:00:00.0: [Firmware Bug]: reg 0x1c: invalid BAR (can't size)
>>    pci 0000:00:00.0: [Firmware Bug]: reg 0x20: invalid BAR (can't size)
>>    pci 0000:00:00.0: [Firmware Bug]: reg 0x24: invalid BAR (can't size)
>>
>> This is due to missing base address register write mask.
>> Add it to get:
>>
>>    PCI host bridge to bus 0000:00
>>    pci_bus 0000:00: root bus resource [mem 0x10000000-0x17ffffff]
>>    pci_bus 0000:00: root bus resource [io  0x1000-0x1fffff]
>>    pci_bus 0000:00: No busn resource found for root bus, will use [bus 00-ff]
>>    pci 0000:00:00.0: [11ab:4620] type 00 class 0x060000
>>    pci 0000:00:00.0: reg 0x10: [mem 0x00000000-0x00000fff pref]
>>    pci 0000:00:00.0: reg 0x14: [mem 0x01000000-0x01000fff pref]
>>    pci 0000:00:00.0: reg 0x18: [mem 0x1c000000-0x1c000fff]
>>    pci 0000:00:00.0: reg 0x1c: [mem 0x1f000000-0x1f000fff]
>>    pci 0000:00:00.0: reg 0x20: [mem 0x1be00000-0x1be00fff]
>>    pci 0000:00:00.0: reg 0x24: [io  0x14000000-0x14000007]
>>
>> Mention the datasheet referenced. Remove the "Malta assumptions ahead"
>> comment since the reset values from the datasheet are used.
>>
>> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
>> ---
>>   hw/pci-host/gt64120.c | 7 +++++++
>>   1 file changed, 7 insertions(+)
>>
>> diff --git a/hw/pci-host/gt64120.c b/hw/pci-host/gt64120.c
>> index b68d647753..344baf55db 100644
>> --- a/hw/pci-host/gt64120.c
>> +++ b/hw/pci-host/gt64120.c
>> @@ -1224,6 +1224,13 @@ static void gt64120_pci_reset_hold(Object *obj, ResetType type)
>>                    PCI_STATUS_FAST_BACK | PCI_STATUS_DEVSEL_MEDIUM);
>>       pci_config_set_prog_interface(d->config, 0);
>>   
>> +    pci_set_long(d->wmask + PCI_BASE_ADDRESS_0, 0xfffff009);
>> +    pci_set_long(d->wmask + PCI_BASE_ADDRESS_1, 0xfffff009);
>> +    pci_set_long(d->wmask + PCI_BASE_ADDRESS_2, 0xfffff009);
>> +    pci_set_long(d->wmask + PCI_BASE_ADDRESS_3, 0xfffff009);
>> +    pci_set_long(d->wmask + PCI_BASE_ADDRESS_4, 0xfffff009);
>> +    pci_set_long(d->wmask + PCI_BASE_ADDRESS_5, 0xfffff001);
>> +
>>       pci_set_long(d->config + PCI_BASE_ADDRESS_0, 0x00000008);
>>       pci_set_long(d->config + PCI_BASE_ADDRESS_1, 0x01000008);
>>       pci_set_long(d->config + PCI_BASE_ADDRESS_2, 0x1c000000);
> 
> 
> if you are tweaking wmask, I think migration will fail.
> So you have to make this depend on machine property, and
> put in compat machinery.

Fortunately we don't need because this device is only meant to
be used by MIPS machines which aren't versioned.

I'll mention that in the description.
diff mbox series

Patch

diff --git a/hw/pci-host/gt64120.c b/hw/pci-host/gt64120.c
index b68d647753..344baf55db 100644
--- a/hw/pci-host/gt64120.c
+++ b/hw/pci-host/gt64120.c
@@ -1224,6 +1224,13 @@  static void gt64120_pci_reset_hold(Object *obj, ResetType type)
                  PCI_STATUS_FAST_BACK | PCI_STATUS_DEVSEL_MEDIUM);
     pci_config_set_prog_interface(d->config, 0);
 
+    pci_set_long(d->wmask + PCI_BASE_ADDRESS_0, 0xfffff009);
+    pci_set_long(d->wmask + PCI_BASE_ADDRESS_1, 0xfffff009);
+    pci_set_long(d->wmask + PCI_BASE_ADDRESS_2, 0xfffff009);
+    pci_set_long(d->wmask + PCI_BASE_ADDRESS_3, 0xfffff009);
+    pci_set_long(d->wmask + PCI_BASE_ADDRESS_4, 0xfffff009);
+    pci_set_long(d->wmask + PCI_BASE_ADDRESS_5, 0xfffff001);
+
     pci_set_long(d->config + PCI_BASE_ADDRESS_0, 0x00000008);
     pci_set_long(d->config + PCI_BASE_ADDRESS_1, 0x01000008);
     pci_set_long(d->config + PCI_BASE_ADDRESS_2, 0x1c000000);