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| author | Tomas Winkler <tomas.winkler@intel.com> | 2015-02-10 10:39:33 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-03-01 19:36:59 -0800 |
| commit | a0a927d06d79d59c55ae7ac0b2fd7f3c0ea3c14c (patch) | |
| tree | fbdf32fe867cd96dfef623b2b6650aa68e921ede /drivers/misc/mei/hw-me.c | |
| parent | 381a58c70985ca1256b0f51aa6694f79662bb166 (diff) | |
| download | lwn-a0a927d06d79d59c55ae7ac0b2fd7f3c0ea3c14c.tar.gz lwn-a0a927d06d79d59c55ae7ac0b2fd7f3c0ea3c14c.zip | |
mei: me: add io register tracing
To make debugging a bit easier we add me register
access tracing
<debugfs>/tracing/events/mei/mei_reg_{read,write}
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/mei/hw-me.c')
| -rw-r--r-- | drivers/misc/mei/hw-me.c | 31 |
1 files changed, 27 insertions, 4 deletions
diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c index ac82b56ccbb5..d3aef82a6c89 100644 --- a/drivers/misc/mei/hw-me.c +++ b/drivers/misc/mei/hw-me.c @@ -25,6 +25,8 @@ #include "hw-me.h" #include "hw-me-regs.h" +#include "mei-trace.h" + /** * mei_me_reg_read - Reads 32bit data from the mei device * @@ -86,7 +88,12 @@ static inline void mei_me_hcbww_write(struct mei_device *dev, u32 data) */ static inline u32 mei_me_mecsr_read(const struct mei_device *dev) { - return mei_me_reg_read(to_me_hw(dev), ME_CSR_HA); + u32 reg; + + reg = mei_me_reg_read(to_me_hw(dev), ME_CSR_HA); + trace_mei_reg_read(dev->dev, "ME_CSR_HA", ME_CSR_HA, reg); + + return reg; } /** @@ -98,7 +105,12 @@ static inline u32 mei_me_mecsr_read(const struct mei_device *dev) */ static inline u32 mei_hcsr_read(const struct mei_device *dev) { - return mei_me_reg_read(to_me_hw(dev), H_CSR); + u32 reg; + + reg = mei_me_reg_read(to_me_hw(dev), H_CSR); + trace_mei_reg_read(dev->dev, "H_CSR", H_CSR, reg); + + return reg; } /** @@ -109,6 +121,7 @@ static inline u32 mei_hcsr_read(const struct mei_device *dev) */ static inline void mei_hcsr_write(struct mei_device *dev, u32 reg) { + trace_mei_reg_write(dev->dev, "H_CSR", H_CSR, reg); mei_me_reg_write(to_me_hw(dev), H_CSR, reg); } @@ -555,9 +568,14 @@ static int mei_me_read_slots(struct mei_device *dev, unsigned char *buffer, static void mei_me_pg_enter(struct mei_device *dev) { struct mei_me_hw *hw = to_me_hw(dev); - u32 reg = mei_me_reg_read(hw, H_HPG_CSR); + u32 reg; + + reg = mei_me_reg_read(hw, H_HPG_CSR); + trace_mei_reg_read(dev->dev, "H_HPG_CSR", H_HPG_CSR, reg); reg |= H_HPG_CSR_PGI; + + trace_mei_reg_write(dev->dev, "H_HPG_CSR", H_HPG_CSR, reg); mei_me_reg_write(hw, H_HPG_CSR, reg); } @@ -569,11 +587,16 @@ static void mei_me_pg_enter(struct mei_device *dev) static void mei_me_pg_exit(struct mei_device *dev) { struct mei_me_hw *hw = to_me_hw(dev); - u32 reg = mei_me_reg_read(hw, H_HPG_CSR); + u32 reg; + + reg = mei_me_reg_read(hw, H_HPG_CSR); + trace_mei_reg_read(dev->dev, "H_HPG_CSR", H_HPG_CSR, reg); WARN(!(reg & H_HPG_CSR_PGI), "PGI is not set\n"); reg |= H_HPG_CSR_PGIHEXR; + + trace_mei_reg_write(dev->dev, "H_HPG_CSR", H_HPG_CSR, reg); mei_me_reg_write(hw, H_HPG_CSR, reg); } |