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MdeModulePkg/NvmExpressDxe: fix check for Cap.Css
Fix the check for NVMe command set being supported by the controller. Was problematic with qemu (6.2.0, Debian 1:6.2+dfsg-3), which sets 0xC1 in that register, making the OVMF think the NVMe controller does not support NVMe. Uncovered by commit 9dd14fc91c174eae87fd122c7ac70073a363527f, which changed the number of bits included in the Css register from 4 to 8. Signed-off-by: Mara Sophie Grosch <littlefox@lf-net.org> Reviewed-by: Hao A Wu <hao.a.wu@intel.com>
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@ -761,7 +761,7 @@ NvmeControllerInit (
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return Status;
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}
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if (Private->Cap.Css != 0x01) {
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if ((Private->Cap.Css & BIT0) == 0) {
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DEBUG ((DEBUG_INFO, "NvmeControllerInit: the controller doesn't support NVMe command set\n"));
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return EFI_UNSUPPORTED;
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}
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