Read address from MSI Capability Structure [on hold]
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Is it possible to find the location of the MSI Capability Structure associated with a particular interrupt? Specifically, I need to know the PCI address that when written to, triggers that interrupt.
MSI interrupts can easily be initialize with the pci_alloc_irq_vectors(9) function, but this simply provides the irq number and no reference to the capability structure.
For reference, the capability structure is described in this document: https://pcisig.com/sites/default/files/specification_documents/msi-x_ecn.pdf
drivers pci
asked Aug 4 at 0:06
Cain Rose
112
put on hold as unclear what you're asking by Rui F Ribeiro, schily, Thomas, Jesse_b, SivaPrasath 2 days ago
Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.
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up vote
2
down vote
favorite
Is it possible to find the location of the MSI Capability Structure associated with a particular interrupt? Specifically, I need to know the PCI address that when written to, triggers that interrupt.
MSI interrupts can easily be initialize with the pci_alloc_irq_vectors(9) function, but this simply provides the irq number and no reference to the capability structure.
For reference, the capability structure is described in this document: https://pcisig.com/sites/default/files/specification_documents/msi-x_ecn.pdf
drivers pci
asked Aug 4 at 0:06
Cain Rose
112
put on hold as unclear what you're asking by Rui F Ribeiro, schily, Thomas, Jesse_b, SivaPrasath 2 days ago
Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.
1
Can you please explain what is unclear in the question? I requested something very specfic, i.e. how to obtain the location [address] of the MSI capability structure. In any case, I found the answer so could someone please unlock this question so that I can properly answer it?
– Cain Rose
yesterday
add a comment |Â
up vote
2
down vote
favorite
up vote
2
down vote
favorite
Is it possible to find the location of the MSI Capability Structure associated with a particular interrupt? Specifically, I need to know the PCI address that when written to, triggers that interrupt.
MSI interrupts can easily be initialize with the pci_alloc_irq_vectors(9) function, but this simply provides the irq number and no reference to the capability structure.
For reference, the capability structure is described in this document: https://pcisig.com/sites/default/files/specification_documents/msi-x_ecn.pdf
drivers pci
asked Aug 4 at 0:06
Cain Rose
112
Is it possible to find the location of the MSI Capability Structure associated with a particular interrupt? Specifically, I need to know the PCI address that when written to, triggers that interrupt.
MSI interrupts can easily be initialize with the pci_alloc_irq_vectors(9) function, but this simply provides the irq number and no reference to the capability structure.
For reference, the capability structure is described in this document: https://pcisig.com/sites/default/files/specification_documents/msi-x_ecn.pdf
drivers pci
asked Aug 4 at 0:06
Cain Rose
112
edited yesterday
asked Aug 4 at 0:06
Cain Rose
112
asked Aug 4 at 0:06
Cain Rose
112
asked Aug 4 at 0:06
Cain Rose
112
112
put on hold as unclear what you're asking by Rui F Ribeiro, schily, Thomas, Jesse_b, SivaPrasath 2 days ago
Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.
put on hold as unclear what you're asking by Rui F Ribeiro, schily, Thomas, Jesse_b, SivaPrasath 2 days ago
Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.
1
Can you please explain what is unclear in the question? I requested something very specfic, i.e. how to obtain the location [address] of the MSI capability structure. In any case, I found the answer so could someone please unlock this question so that I can properly answer it?
– Cain Rose
yesterday
add a comment |Â
1
Can you please explain what is unclear in the question? I requested something very specfic, i.e. how to obtain the location [address] of the MSI capability structure. In any case, I found the answer so could someone please unlock this question so that I can properly answer it?
– Cain Rose
yesterday
1
1
Can you please explain what is unclear in the question? I requested something very specfic, i.e. how to obtain the location [address] of the MSI capability structure. In any case, I found the answer so could someone please unlock this question so that I can properly answer it?
– Cain Rose
yesterday
Can you please explain what is unclear in the question? I requested something very specfic, i.e. how to obtain the location [address] of the MSI capability structure. In any case, I found the answer so could someone please unlock this question so that I can properly answer it?
– Cain Rose
yesterday
add a comment |Â
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Can you please explain what is unclear in the question? I requested something very specfic, i.e. how to obtain the location [address] of the MSI capability structure. In any case, I found the answer so could someone please unlock this question so that I can properly answer it?
– Cain Rose
yesterday