diff options
| author | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2016-09-05 09:51:32 +0100 |
|---|---|---|
| committer | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2016-09-06 15:40:49 +0100 |
| commit | 4e28ea2c29e008e1390ea87c6e5a78d65ee33d5c (patch) | |
| tree | 9610f36e6e22baf210bc6fa8bd62e68cf1d755a3 /MdeModulePkg/Bus/Pci | |
| parent | 167c3fb45674c274219b3af0bc811992cd4d6116 (diff) | |
| download | edk2-platforms-4e28ea2c29e008e1390ea87c6e5a78d65ee33d5c.tar.xz | |
MdeModulePkg/NvmExpressDxe: enable 64-bit PCI DMA
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>
Reviewed-by: Feng Tian <feng.tian@Intel.com>
Diffstat (limited to 'MdeModulePkg/Bus/Pci')
| -rw-r--r-- | MdeModulePkg/Bus/Pci/NvmExpressDxe/NvmExpressHci.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/MdeModulePkg/Bus/Pci/NvmExpressDxe/NvmExpressHci.c b/MdeModulePkg/Bus/Pci/NvmExpressDxe/NvmExpressHci.c index a173504cdf..51cff3c96c 100644 --- a/MdeModulePkg/Bus/Pci/NvmExpressDxe/NvmExpressHci.c +++ b/MdeModulePkg/Bus/Pci/NvmExpressDxe/NvmExpressHci.c @@ -863,6 +863,19 @@ NvmeControllerInit ( }
//
+ // Enable 64-bit DMA support in the PCI layer.
+ //
+ Status = PciIo->Attributes (
+ PciIo,
+ EfiPciIoAttributeOperationEnable,
+ EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE,
+ NULL
+ );
+ if (EFI_ERROR (Status)) {
+ DEBUG ((EFI_D_WARN, "NvmeControllerInit: failed to enable 64-bit DMA (%r)\n", Status));
+ }
+
+ //
// Read the Controller Capabilities register and verify that the NVM command set is supported
//
Status = ReadNvmeControllerCapabilities (Private, &Private->Cap);
|