diff mbox

[edk2,2/7] MdeModulePkg/EhciDxe: enable 64-bit PCI DMA

Message ID 1473067049-16252-3-git-send-email-ard.biesheuvel@linaro.org
State Accepted
Commit 167c3fb45674c274219b3af0bc811992cd4d6116
Headers show

Commit Message

Ard Biesheuvel Sept. 5, 2016, 9:17 a.m. UTC
PCI controller drivers must set the EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE
attribute if the controller supports 64-bit DMA addressing.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>

---
 MdeModulePkg/Bus/Pci/EhciDxe/Ehci.c      | 22 +++++++++++++++++++-
 MdeModulePkg/Bus/Pci/EhciDxe/Ehci.h      |  2 ++
 MdeModulePkg/Bus/Pci/EhciDxe/EhciSched.c |  2 +-
 3 files changed, 24 insertions(+), 2 deletions(-)

-- 
2.7.4

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Comments

Laszlo Ersek Sept. 5, 2016, 12:19 p.m. UTC | #1
On 09/05/16 11:17, Ard Biesheuvel wrote:
> PCI controller drivers must set the EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE

> attribute if the controller supports 64-bit DMA addressing.

> 

> Contributed-under: TianoCore Contribution Agreement 1.0

> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>

> ---

>  MdeModulePkg/Bus/Pci/EhciDxe/Ehci.c      | 22 +++++++++++++++++++-

>  MdeModulePkg/Bus/Pci/EhciDxe/Ehci.h      |  2 ++

>  MdeModulePkg/Bus/Pci/EhciDxe/EhciSched.c |  2 +-

>  3 files changed, 24 insertions(+), 2 deletions(-)

> 

> diff --git a/MdeModulePkg/Bus/Pci/EhciDxe/Ehci.c b/MdeModulePkg/Bus/Pci/EhciDxe/Ehci.c

> index 4e9e05f0e431..e4c7e59526de 100644

> --- a/MdeModulePkg/Bus/Pci/EhciDxe/Ehci.c

> +++ b/MdeModulePkg/Bus/Pci/EhciDxe/Ehci.c

> @@ -89,7 +89,7 @@ EhcGetCapability (

>  

>    *MaxSpeed       = EFI_USB_SPEED_HIGH;

>    *PortNumber     = (UINT8) (Ehc->HcStructParams & HCSP_NPORTS);

> -  *Is64BitCapable = (UINT8) (Ehc->HcCapParams & HCCP_64BIT);

> +  *Is64BitCapable = (UINT8) Ehc->Support64BitDma;

>  

>    DEBUG ((EFI_D_INFO, "EhcGetCapability: %d ports, 64 bit %d\n", *PortNumber, *Is64BitCapable));

>  

> @@ -1877,6 +1877,26 @@ EhcDriverBindingStart (

>      goto CLOSE_PCIIO;

>    }

>  

> +  //

> +  // Enable 64-bit DMA support in the PCI layer if this controller

> +  // supports it.

> +  //

> +  if ((Ehc->HcCapParams & HCCP_64BIT) != 0) {


How about using the nice EHC_BIT_IS_SET macro here (inspired by the
previous use in EhcInitSched(), at the bottom of this patch)?

> +    Status = PciIo->Attributes (

> +                      PciIo,

> +                      EfiPciIoAttributeOperationEnable,

> +                      EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE,

> +                      NULL

> +                      );

> +    if (!EFI_ERROR (Status)) {

> +      Ehc->Support64BitDma = TRUE;

> +    } else {

> +      DEBUG ((EFI_D_WARN,

> +        "EhcDriverBindingStart: failed to enable 64-bit DMA on 64-bit capable controller @ %p (%r)\n",

> +        Controller, Status));


Same comment as for 5/7, i.e. %a and __FUNCTION__.

Again, whether you want to change these is up to you.

Reviewed-by: Laszlo Ersek <lersek@redhat.com>


(I won't try to review the rest of the patches.)

Thanks
Laszlo

> +    }

> +  }

> +

>    Status = gBS->InstallProtocolInterface (

>                    &Controller,

>                    &gEfiUsb2HcProtocolGuid,

> diff --git a/MdeModulePkg/Bus/Pci/EhciDxe/Ehci.h b/MdeModulePkg/Bus/Pci/EhciDxe/Ehci.h

> index 7177658092c3..be81bde40d9b 100644

> --- a/MdeModulePkg/Bus/Pci/EhciDxe/Ehci.h

> +++ b/MdeModulePkg/Bus/Pci/EhciDxe/Ehci.h

> @@ -173,6 +173,8 @@ struct _USB2_HC_DEV {

>    UINT16                    DebugPortOffset; // The offset of debug port mmio register

>    UINT8                     DebugPortBarNum; // The bar number of debug port mmio register

>    UINT8                     DebugPortNum;    // The port number of usb debug port

> +

> +  BOOLEAN                   Support64BitDma; // Whether 64 bit DMA may be used with this device

>  };

>  

>  

> diff --git a/MdeModulePkg/Bus/Pci/EhciDxe/EhciSched.c b/MdeModulePkg/Bus/Pci/EhciDxe/EhciSched.c

> index 5594e6699ea6..036c00b32b40 100644

> --- a/MdeModulePkg/Bus/Pci/EhciDxe/EhciSched.c

> +++ b/MdeModulePkg/Bus/Pci/EhciDxe/EhciSched.c

> @@ -178,7 +178,7 @@ EhcInitSched (

>    //

>    Ehc->MemPool = UsbHcInitMemPool (

>                     PciIo,

> -                   EHC_BIT_IS_SET (Ehc->HcCapParams, HCCP_64BIT),

> +                   Ehc->Support64BitDma,

>                     EHC_HIGH_32BIT (PhyAddr)

>                     );

>  

> 


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Ard Biesheuvel Sept. 5, 2016, 12:44 p.m. UTC | #2
On 5 September 2016 at 13:19, Laszlo Ersek <lersek@redhat.com> wrote:
> On 09/05/16 11:17, Ard Biesheuvel wrote:

>> PCI controller drivers must set the EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE

>> attribute if the controller supports 64-bit DMA addressing.

>>

>> Contributed-under: TianoCore Contribution Agreement 1.0

>> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>

>> ---

>>  MdeModulePkg/Bus/Pci/EhciDxe/Ehci.c      | 22 +++++++++++++++++++-

>>  MdeModulePkg/Bus/Pci/EhciDxe/Ehci.h      |  2 ++

>>  MdeModulePkg/Bus/Pci/EhciDxe/EhciSched.c |  2 +-

>>  3 files changed, 24 insertions(+), 2 deletions(-)

>>

>> diff --git a/MdeModulePkg/Bus/Pci/EhciDxe/Ehci.c b/MdeModulePkg/Bus/Pci/EhciDxe/Ehci.c

>> index 4e9e05f0e431..e4c7e59526de 100644

>> --- a/MdeModulePkg/Bus/Pci/EhciDxe/Ehci.c

>> +++ b/MdeModulePkg/Bus/Pci/EhciDxe/Ehci.c

>> @@ -89,7 +89,7 @@ EhcGetCapability (

>>

>>    *MaxSpeed       = EFI_USB_SPEED_HIGH;

>>    *PortNumber     = (UINT8) (Ehc->HcStructParams & HCSP_NPORTS);

>> -  *Is64BitCapable = (UINT8) (Ehc->HcCapParams & HCCP_64BIT);

>> +  *Is64BitCapable = (UINT8) Ehc->Support64BitDma;

>>

>>    DEBUG ((EFI_D_INFO, "EhcGetCapability: %d ports, 64 bit %d\n", *PortNumber, *Is64BitCapable));

>>

>> @@ -1877,6 +1877,26 @@ EhcDriverBindingStart (

>>      goto CLOSE_PCIIO;

>>    }

>>

>> +  //

>> +  // Enable 64-bit DMA support in the PCI layer if this controller

>> +  // supports it.

>> +  //

>> +  if ((Ehc->HcCapParams & HCCP_64BIT) != 0) {

>

> How about using the nice EHC_BIT_IS_SET macro here (inspired by the

> previous use in EhcInitSched(), at the bottom of this patch)?

>


I just moved the test from the previous hunk here. I don't care either
way, so I will let the maintainers decide. Feng, Star?

>> +    Status = PciIo->Attributes (

>> +                      PciIo,

>> +                      EfiPciIoAttributeOperationEnable,

>> +                      EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE,

>> +                      NULL

>> +                      );

>> +    if (!EFI_ERROR (Status)) {

>> +      Ehc->Support64BitDma = TRUE;

>> +    } else {

>> +      DEBUG ((EFI_D_WARN,

>> +        "EhcDriverBindingStart: failed to enable 64-bit DMA on 64-bit capable controller @ %p (%r)\n",

>> +        Controller, Status));

>

> Same comment as for 5/7, i.e. %a and __FUNCTION__.

>


The surrounding code never uses that. I started out using %a and
__FUNCTION__, and then removed it again to align with the existing
code.

> Again, whether you want to change these is up to you.

>

> Reviewed-by: Laszlo Ersek <lersek@redhat.com>

>


Thanks a lot!

> (I won't try to review the rest of the patches.)

>


No worries. I did build test all of them, but I currently have no way
of testing the NVM and SDHCI patches, so I am hoping they are
'obviously correct'

-- 
Ard.
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Laszlo Ersek Sept. 5, 2016, 1:06 p.m. UTC | #3
On 09/05/16 14:44, Ard Biesheuvel wrote:
> On 5 September 2016 at 13:19, Laszlo Ersek <lersek@redhat.com> wrote:

>> On 09/05/16 11:17, Ard Biesheuvel wrote:

>>> PCI controller drivers must set the EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE

>>> attribute if the controller supports 64-bit DMA addressing.

>>>

>>> Contributed-under: TianoCore Contribution Agreement 1.0

>>> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>

>>> ---

>>>  MdeModulePkg/Bus/Pci/EhciDxe/Ehci.c      | 22 +++++++++++++++++++-

>>>  MdeModulePkg/Bus/Pci/EhciDxe/Ehci.h      |  2 ++

>>>  MdeModulePkg/Bus/Pci/EhciDxe/EhciSched.c |  2 +-

>>>  3 files changed, 24 insertions(+), 2 deletions(-)

>>>

>>> diff --git a/MdeModulePkg/Bus/Pci/EhciDxe/Ehci.c b/MdeModulePkg/Bus/Pci/EhciDxe/Ehci.c

>>> index 4e9e05f0e431..e4c7e59526de 100644

>>> --- a/MdeModulePkg/Bus/Pci/EhciDxe/Ehci.c

>>> +++ b/MdeModulePkg/Bus/Pci/EhciDxe/Ehci.c

>>> @@ -89,7 +89,7 @@ EhcGetCapability (

>>>

>>>    *MaxSpeed       = EFI_USB_SPEED_HIGH;

>>>    *PortNumber     = (UINT8) (Ehc->HcStructParams & HCSP_NPORTS);

>>> -  *Is64BitCapable = (UINT8) (Ehc->HcCapParams & HCCP_64BIT);

>>> +  *Is64BitCapable = (UINT8) Ehc->Support64BitDma;

>>>

>>>    DEBUG ((EFI_D_INFO, "EhcGetCapability: %d ports, 64 bit %d\n", *PortNumber, *Is64BitCapable));

>>>

>>> @@ -1877,6 +1877,26 @@ EhcDriverBindingStart (

>>>      goto CLOSE_PCIIO;

>>>    }

>>>

>>> +  //

>>> +  // Enable 64-bit DMA support in the PCI layer if this controller

>>> +  // supports it.

>>> +  //

>>> +  if ((Ehc->HcCapParams & HCCP_64BIT) != 0) {

>>

>> How about using the nice EHC_BIT_IS_SET macro here (inspired by the

>> previous use in EhcInitSched(), at the bottom of this patch)?

>>

> 

> I just moved the test from the previous hunk here. I don't care either

> way, so I will let the maintainers decide. Feng, Star?

> 

>>> +    Status = PciIo->Attributes (

>>> +                      PciIo,

>>> +                      EfiPciIoAttributeOperationEnable,

>>> +                      EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE,

>>> +                      NULL

>>> +                      );

>>> +    if (!EFI_ERROR (Status)) {

>>> +      Ehc->Support64BitDma = TRUE;

>>> +    } else {

>>> +      DEBUG ((EFI_D_WARN,

>>> +        "EhcDriverBindingStart: failed to enable 64-bit DMA on 64-bit capable controller @ %p (%r)\n",

>>> +        Controller, Status));

>>

>> Same comment as for 5/7, i.e. %a and __FUNCTION__.

>>

> 

> The surrounding code never uses that. I started out using %a and

> __FUNCTION__, and then removed it again to align with the existing

> code.

> 

>> Again, whether you want to change these is up to you.

>>

>> Reviewed-by: Laszlo Ersek <lersek@redhat.com>

>>

> 

> Thanks a lot!

> 

>> (I won't try to review the rest of the patches.)

>>

> 

> No worries. I did build test all of them, but I currently have no way

> of testing the NVM and SDHCI patches, so I am hoping they are

> 'obviously correct'

> 


You can test the NVMe change with QEMU (x86_64) + OVMF:

https://tianocore.acgmultimedia.com/show_bug.cgi?id=79

Thanks
Laszlo
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diff mbox

Patch

diff --git a/MdeModulePkg/Bus/Pci/EhciDxe/Ehci.c b/MdeModulePkg/Bus/Pci/EhciDxe/Ehci.c
index 4e9e05f0e431..e4c7e59526de 100644
--- a/MdeModulePkg/Bus/Pci/EhciDxe/Ehci.c
+++ b/MdeModulePkg/Bus/Pci/EhciDxe/Ehci.c
@@ -89,7 +89,7 @@  EhcGetCapability (
 
   *MaxSpeed       = EFI_USB_SPEED_HIGH;
   *PortNumber     = (UINT8) (Ehc->HcStructParams & HCSP_NPORTS);
-  *Is64BitCapable = (UINT8) (Ehc->HcCapParams & HCCP_64BIT);
+  *Is64BitCapable = (UINT8) Ehc->Support64BitDma;
 
   DEBUG ((EFI_D_INFO, "EhcGetCapability: %d ports, 64 bit %d\n", *PortNumber, *Is64BitCapable));
 
@@ -1877,6 +1877,26 @@  EhcDriverBindingStart (
     goto CLOSE_PCIIO;
   }
 
+  //
+  // Enable 64-bit DMA support in the PCI layer if this controller
+  // supports it.
+  //
+  if ((Ehc->HcCapParams & HCCP_64BIT) != 0) {
+    Status = PciIo->Attributes (
+                      PciIo,
+                      EfiPciIoAttributeOperationEnable,
+                      EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE,
+                      NULL
+                      );
+    if (!EFI_ERROR (Status)) {
+      Ehc->Support64BitDma = TRUE;
+    } else {
+      DEBUG ((EFI_D_WARN,
+        "EhcDriverBindingStart: failed to enable 64-bit DMA on 64-bit capable controller @ %p (%r)\n",
+        Controller, Status));
+    }
+  }
+
   Status = gBS->InstallProtocolInterface (
                   &Controller,
                   &gEfiUsb2HcProtocolGuid,
diff --git a/MdeModulePkg/Bus/Pci/EhciDxe/Ehci.h b/MdeModulePkg/Bus/Pci/EhciDxe/Ehci.h
index 7177658092c3..be81bde40d9b 100644
--- a/MdeModulePkg/Bus/Pci/EhciDxe/Ehci.h
+++ b/MdeModulePkg/Bus/Pci/EhciDxe/Ehci.h
@@ -173,6 +173,8 @@  struct _USB2_HC_DEV {
   UINT16                    DebugPortOffset; // The offset of debug port mmio register
   UINT8                     DebugPortBarNum; // The bar number of debug port mmio register
   UINT8                     DebugPortNum;    // The port number of usb debug port
+
+  BOOLEAN                   Support64BitDma; // Whether 64 bit DMA may be used with this device
 };
 
 
diff --git a/MdeModulePkg/Bus/Pci/EhciDxe/EhciSched.c b/MdeModulePkg/Bus/Pci/EhciDxe/EhciSched.c
index 5594e6699ea6..036c00b32b40 100644
--- a/MdeModulePkg/Bus/Pci/EhciDxe/EhciSched.c
+++ b/MdeModulePkg/Bus/Pci/EhciDxe/EhciSched.c
@@ -178,7 +178,7 @@  EhcInitSched (
   //
   Ehc->MemPool = UsbHcInitMemPool (
                    PciIo,
-                   EHC_BIT_IS_SET (Ehc->HcCapParams, HCCP_64BIT),
+                   Ehc->Support64BitDma,
                    EHC_HIGH_32BIT (PhyAddr)
                    );