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| author | David E. Box | 2014-09-18 07:13:51 +0200 |
|---|---|---|
| committer | Ingo Molnar | 2014-09-19 13:08:43 +0200 |
| commit | ed2226bd4d4a53bcc3b2ea0b1b28e955ebc15da7 (patch) | |
| tree | 8b5892beccf4c7985a914bf7c96742aebf3dbf22 /arch/x86/kernel | |
| parent | x86/platform/intel/iosf: Add better description of IOSF driver in config (diff) | |
| download | kernel-qcow2-linux-ed2226bd4d4a53bcc3b2ea0b1b28e955ebc15da7.tar.gz kernel-qcow2-linux-ed2226bd4d4a53bcc3b2ea0b1b28e955ebc15da7.tar.xz kernel-qcow2-linux-ed2226bd4d4a53bcc3b2ea0b1b28e955ebc15da7.zip | |
x86/platform/intel/iosf: Add debugfs config option for IOSF
Makes the IOSF sideband available through debugfs. Allows
developers to experiment with using the sideband to provide
debug and analytical tools for units on the SoC.
Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Link: http://lkml.kernel.org/r/1411017231-20807-4-git-send-email-david.e.box@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/kernel')
| -rw-r--r-- | arch/x86/kernel/iosf_mbi.c | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/arch/x86/kernel/iosf_mbi.c b/arch/x86/kernel/iosf_mbi.c index e01f7414b5e7..82f8d02f0df2 100644 --- a/arch/x86/kernel/iosf_mbi.c +++ b/arch/x86/kernel/iosf_mbi.c @@ -190,7 +190,7 @@ bool iosf_mbi_available(void) } EXPORT_SYMBOL(iosf_mbi_available); -/********************** debugfs begin ****************************/ +#ifdef CONFIG_IOSF_MBI_DEBUG static u32 dbg_mdr; static u32 dbg_mcr; static u32 dbg_mcrx; @@ -229,6 +229,7 @@ static int mcr_set(void *data, u64 val) DEFINE_SIMPLE_ATTRIBUTE(iosf_mcr_fops, mcr_get, mcr_set , "%llx\n"); static struct dentry *iosf_dbg; + static void iosf_sideband_debug_init(void) { struct dentry *d; @@ -257,7 +258,20 @@ static void iosf_sideband_debug_init(void) cleanup: debugfs_remove_recursive(d); } -/********************** debugfs end ****************************/ + +static void iosf_debugfs_init(void) +{ + iosf_sideband_debug_init(); +} + +static void iosf_debugfs_remove(void) +{ + debugfs_remove_recursive(iosf_dbg); +} +#else +static inline void iosf_debugfs_init(void) { } +static inline void iosf_debugfs_remove(void) { } +#endif /* CONFIG_IOSF_MBI_DEBUG */ static int iosf_mbi_probe(struct pci_dev *pdev, const struct pci_device_id *unused) @@ -290,13 +304,14 @@ static struct pci_driver iosf_mbi_pci_driver = { static int __init iosf_mbi_init(void) { - iosf_sideband_debug_init(); + iosf_debugfs_init(); + return pci_register_driver(&iosf_mbi_pci_driver); } static void __exit iosf_mbi_exit(void) { - debugfs_remove_recursive(iosf_dbg); + iosf_debugfs_remove(); pci_unregister_driver(&iosf_mbi_pci_driver); if (mbi_pdev) { |