Commit 18697d2b authored by Oliver O'Halloran's avatar Oliver O'Halloran Committed by Michael Ellerman
Browse files

powernv/pci: Add a debugfs entry to dump PHB's IODA PE state 



Add a debugfs entry to dump the state of the active IODA PEs. The IODA
PE state reflects how the PHB's internal concept of a PE is
configured. This is separate to the EEH PE state and is managed power
the PowerNV PCI backend rather than the EEH core.

Signed-off-by: default avatarOliver O'Halloran <oohall@gmail.com>
Reviewed-by: default avatarAlexey Kardashevskiy <aik@ozlabs.ru>
[mpe: Use DEFINE_DEBUGFS_ATTRIBUTE]
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190912052945.12589-3-oohall@gmail.com
parent c13a17b7

arch/powerpc/platforms/powernv/pci-ioda.c

+29 −0
Original line number Original line Diff line number Diff line
@@ -3107,6 +3107,33 @@ static int pnv_pci_diag_data_set(void *data, u64 val) 
DEFINE_DEBUGFS_ATTRIBUTE(pnv_pci_diag_data_fops, NULL, pnv_pci_diag_data_set,

DEFINE_DEBUGFS_ATTRIBUTE(pnv_pci_diag_data_fops, NULL, pnv_pci_diag_data_set,

			 "%llu\n");

			 "%llu\n");





static int pnv_pci_ioda_pe_dump(void *data, u64 val)

{

	struct pnv_phb *phb = data;

	int pe_num;



	for (pe_num = 0; pe_num < phb->ioda.total_pe_num; pe_num++) {

		struct pnv_ioda_pe *pe = &phb->ioda.pe_array[pe_num];



		if (!test_bit(pe_num, phb->ioda.pe_alloc))

			continue;



		pe_warn(pe, "rid: %04x dev count: %2d flags: %s%s%s%s%s%s\n",

			pe->rid, pe->device_count,

			(pe->flags & PNV_IODA_PE_DEV) ? "dev " : "",

			(pe->flags & PNV_IODA_PE_BUS) ? "bus " : "",

			(pe->flags & PNV_IODA_PE_BUS_ALL) ? "all " : "",

			(pe->flags & PNV_IODA_PE_MASTER) ? "master " : "",

			(pe->flags & PNV_IODA_PE_SLAVE) ? "slave " : "",

			(pe->flags & PNV_IODA_PE_VF) ? "vf " : "");

	}



	return 0;

}



DEFINE_DEBUGFS_ATTRIBUTE(pnv_pci_ioda_pe_dump_fops, NULL,

			 pnv_pci_ioda_pe_dump, "%llu\n");



#endif /* CONFIG_DEBUG_FS */

#endif /* CONFIG_DEBUG_FS */





static void pnv_pci_ioda_create_dbgfs(void)

static void pnv_pci_ioda_create_dbgfs(void)
@@ -3132,6 +3159,8 @@ static void pnv_pci_ioda_create_dbgfs(void) 




		debugfs_create_file_unsafe("dump_diag_regs", 0200, phb->dbgfs,

		debugfs_create_file_unsafe("dump_diag_regs", 0200, phb->dbgfs,

					   phb, &pnv_pci_diag_data_fops);

					   phb, &pnv_pci_diag_data_fops);

		debugfs_create_file_unsafe("dump_ioda_pe_state", 0200, phb->dbgfs,

					   phb, &pnv_pci_ioda_pe_dump_fops);

	}

	}

#endif /* CONFIG_DEBUG_FS */

#endif /* CONFIG_DEBUG_FS */

}

}

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