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arch/x86: PCIE MSI address and data may be out of remapping

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In fact, in case of VT-D being enabled, it will require to get an
address and data for its own MSI based interrupts which cannot be
remapped (i.e.: will directly go to the relevant APIC).

This is necessary to get the Fault event supported in VT-D.

Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
This commit is contained in:
Tomasz Bursztyka 2021-01-06 21:16:24 +01:00 • committed by Anas Nashif
commit 1012e254cc
1 changed files with 13 additions and 9 deletions
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22
arch/x86/core/pcie.c
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@ -187,24 +187,28 @@ uint32_t pcie_msi_map(unsigned int irq,
ARG_UNUSED(irq);
#if defined(CONFIG_INTEL_VTD_ICTL)
return vtd_remap_msi(vtd, vector, n_vector);
#else
return 0xFEE00000U; /* standard delivery to BSP local APIC */
if (vector != NULL && n_vector > 0) {
return vtd_remap_msi(vtd, vector, n_vector);
}
#endif
return 0xFEE00000U; /* standard delivery to BSP local APIC */
}
uint16_t pcie_msi_mdr(unsigned int irq,
msi_vector_t *vector)
{
if (IS_ENABLED(CONFIG_INTEL_VTD_ICTL)) {
return 0;
}
if (vector != NULL) {
if (IS_ENABLED(CONFIG_INTEL_VTD_ICTL)) {
return 0;
}
#if defined(CONFIG_PCIE_MSI_X)
if (vector->msix) {
return 0x4000U | vector->arch.vector;
}
if (vector->msix) {
return 0x4000U | vector->arch.vector;
}
#endif
}
return 0x4000U | Z_IRQ_TO_INTERRUPT_VECTOR(irq);
}