diff options
| author | Dov Levenglick <dovl@codeaurora.org> | 2015-01-05 17:48:45 +0200 |
|---|---|---|
| committer | David Keitel <dkeitel@codeaurora.org> | 2016-03-22 10:58:29 -0700 |
| commit | 6021822ecaf116058f1099992ba8d4fce9e08d6b (patch) | |
| tree | aca3c41584b999aefb0eaa758f4f1c4ada90111b /include/linux | |
| parent | a422990e68840887e2835dbfeb3a665411d478e5 (diff) | |
scsi: ufs-qcom: add print suppressing debugfs mechanism
Provide a mechanism for the userspace to suppress specific
debug prints via debugfs. This is useful in order to avoid
cases where too much printing would cause watchdog timers
to expire.
Change-Id: I2500b7621b631e260d98595ed8cfe7d5a496dc10
Signed-off-by: Dov Levenglick <dovl@codeaurora.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/scsi/ufs/ufs-qcom.h | 18 | ||||
| -rw-r--r-- | include/linux/scsi/ufs/ufshcd.h | 6 |
2 files changed, 24 insertions, 0 deletions
diff --git a/include/linux/scsi/ufs/ufs-qcom.h b/include/linux/scsi/ufs/ufs-qcom.h index dee92b9ee54f..e00f0b935227 100644 --- a/include/linux/scsi/ufs/ufs-qcom.h +++ b/include/linux/scsi/ufs/ufs-qcom.h @@ -15,6 +15,7 @@ #define UFS_QCOM_H_ #include <linux/phy/phy.h> +#include <linux/scsi/ufs/ufshcd.h> #define MAX_UFS_QCOM_HOSTS 1 #define MAX_U32 (~(u32)0) @@ -120,6 +121,11 @@ struct ufs_qcom_phy_vreg { bool enabled; }; +/* QCOM UFS debug print bit mask */ +#define UFS_QCOM_DBG_PRINT_REGS_EN BIT(0) + +#define UFS_QCOM_DBG_PRINT_ALL UFS_QCOM_DBG_PRINT_REGS_EN + static inline void ufs_qcom_get_controller_revision(struct ufs_hba *hba, u8 *major, u16 *minor, u16 *step) @@ -189,6 +195,13 @@ struct ufs_hw_version { u8 major; }; +#ifdef CONFIG_DEBUG_FS +struct qcom_debugfs_files { + struct dentry *debugfs_root; + struct dentry *dbg_print_en; +}; +#endif + struct ufs_qcom_host { /* * Set this capability if host controller supports the QUniPro mode @@ -213,6 +226,11 @@ struct ufs_qcom_host { void __iomem *dev_ref_clk_ctrl_mmio; bool is_dev_ref_clk_enabled; struct ufs_hw_version hw_ver; +#ifdef CONFIG_DEBUG_FS + struct qcom_debugfs_files debugfs_files; +#endif + /* Bitmask for enabling debug prints */ + u32 dbg_print_en; }; #define ufs_qcom_is_link_off(hba) ufshcd_is_link_off(hba) diff --git a/include/linux/scsi/ufs/ufshcd.h b/include/linux/scsi/ufs/ufshcd.h index b4d7b5f60995..ad3d250a7018 100644 --- a/include/linux/scsi/ufs/ufshcd.h +++ b/include/linux/scsi/ufs/ufshcd.h @@ -312,6 +312,8 @@ struct ufs_pwr_mode_info { * @crypto_engine_reset_err: resets the saved error status of * the cryptographic engine * @dbg_register_dump: used to dump controller debug information + * @add_debugfs: used to add debugfs entries + * @remove_debugfs: used to remove debugfs entries */ struct ufs_hba_variant_ops { const char *name; @@ -340,6 +342,10 @@ struct ufs_hba_variant_ops { int (*crypto_engine_get_err)(struct ufs_hba *); void (*crypto_engine_reset_err)(struct ufs_hba *); void (*dbg_register_dump)(struct ufs_hba *hba); +#ifdef CONFIG_DEBUG_FS + void (*add_debugfs)(struct ufs_hba *hba, struct dentry *root); + void (*remove_debugfs)(struct ufs_hba *hba); +#endif }; /* clock gating state */ |