[PATCH 30/31] powerpc/powernv: Debugfs directory for PHB
From: Gavin Shan <hidden>
Date: 2013-06-20 05:21:51
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
The patch creates one debugfs directory ("powerpc/PCIxxxx") for
each PHB so that we can hook EEH error injection debugfs entry
there in proceeding patch.
Signed-off-by: Gavin Shan <redacted>
---
arch/powerpc/platforms/powernv/pci-ioda.c | 22 ++++++++++++++++++++++
arch/powerpc/platforms/powernv/pci.h | 4 ++++
2 files changed, 26 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c
index 48b0940..0d9d302 100644
--- a/arch/powerpc/platforms/powernv/pci-ioda.c
+++ b/arch/powerpc/platforms/powernv/pci-ioda.c@@ -13,6 +13,7 @@ #include <linux/kernel.h> #include <linux/pci.h> +#include <linux/debugfs.h> #include <linux/delay.h> #include <linux/string.h> #include <linux/init.h>
@@ -968,12 +969,33 @@ static void pnv_pci_ioda_setup_DMA(void) } } +static void pnv_pci_ioda_create_dbgfs(void) +{ +#ifdef CONFIG_DEBUG_FS + struct pci_controller *hose, *tmp; + struct pnv_phb *phb; + char name[16]; + + list_for_each_entry_safe(hose, tmp, &hose_list, list_node) { + phb = hose->private_data; + + sprintf(name, "PCI%04x", hose->global_number); + phb->dbgfs = debugfs_create_dir(name, powerpc_debugfs_root); + if (!phb->dbgfs) + pr_warning("%s: Error on creating debugfs on PHB#%x\n", + __func__, hose->global_number); + } +#endif /* CONFIG_DEBUG_FS */ +} + static void pnv_pci_ioda_fixup(void) { pnv_pci_ioda_setup_PEs(); pnv_pci_ioda_setup_seg(); pnv_pci_ioda_setup_DMA(); + pnv_pci_ioda_create_dbgfs(); + #ifdef CONFIG_EEH eeh_addr_cache_build(); eeh_init();
diff --git a/arch/powerpc/platforms/powernv/pci.h b/arch/powerpc/platforms/powernv/pci.h
index 3656a240..43906e3 100644
--- a/arch/powerpc/platforms/powernv/pci.h
+++ b/arch/powerpc/platforms/powernv/pci.h@@ -96,6 +96,10 @@ struct pnv_phb { int removed; #endif +#ifdef CONFIG_DEBUG_FS + struct dentry *dbgfs; +#endif + #ifdef CONFIG_PCI_MSI unsigned int msi_base; unsigned int msi32_support;
--
1.7.5.4