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mei: kill cached host and me csr values 

Kill host_hw_status and me_hw_state from me hw structure that used
to cache host and me csr values.
We do not use the cached values across the function calls anymore

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tomas Winkler 2014-11-12 23:42:14 +02:00 committed by Greg Kroah-Hartman
parent c380b862ba
commit 18caeb70f3
2 changed files with 16 additions and 21 deletions
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30
drivers/misc/mei/hw-me.c
View File

@ -270,10 +270,10 @@ static int mei_me_hw_reset(struct mei_device *dev, bool intr_enable)
static void mei_me_host_set_ready(struct mei_device *dev)
{
struct mei_me_hw *hw = to_me_hw(dev);
u32 hcsr = mei_hcsr_read(hw);
hw->host_hw_state = mei_hcsr_read(hw);
hw->host_hw_state |= H_IE | H_IG | H_RDY;
mei_hcsr_set(hw, hw->host_hw_state);
hcsr |= H_IE | H_IG | H_RDY;
mei_hcsr_set(hw, hcsr);
}
/**
@ -285,9 +285,9 @@ static void mei_me_host_set_ready(struct mei_device *dev)
static bool mei_me_host_is_ready(struct mei_device *dev)
{
struct mei_me_hw *hw = to_me_hw(dev);
u32 hcsr = mei_hcsr_read(hw);
hw->host_hw_state = mei_hcsr_read(hw);
return (hw->host_hw_state & H_RDY) == H_RDY;
return (hcsr & H_RDY) == H_RDY;
}
/**
@ -299,9 +299,9 @@ static bool mei_me_host_is_ready(struct mei_device *dev)
static bool mei_me_hw_is_ready(struct mei_device *dev)
{
struct mei_me_hw *hw = to_me_hw(dev);
u32 mecsr = mei_me_mecsr_read(hw);
hw->me_hw_state = mei_me_mecsr_read(hw);
return (hw->me_hw_state & ME_RDY_HRA) == ME_RDY_HRA;
return (mecsr & ME_RDY_HRA) == ME_RDY_HRA;
}
/**
@ -356,12 +356,13 @@ static int mei_me_hw_start(struct mei_device *dev)
static unsigned char mei_hbuf_filled_slots(struct mei_device *dev)
{
struct mei_me_hw *hw = to_me_hw(dev);
u32 hcsr;
char read_ptr, write_ptr;
hw->host_hw_state = mei_hcsr_read(hw);
hcsr = mei_hcsr_read(hw);
read_ptr = (char) ((hw->host_hw_state & H_CBRP) >> 8);
write_ptr = (char) ((hw->host_hw_state & H_CBWP) >> 16);
read_ptr = (char) ((hcsr & H_CBRP) >> 8);
write_ptr = (char) ((hcsr & H_CBWP) >> 16);
return (unsigned char) (write_ptr - read_ptr);
}
@ -474,13 +475,14 @@ static int mei_me_write_message(struct mei_device *dev,
static int mei_me_count_full_read_slots(struct mei_device *dev)
{
struct mei_me_hw *hw = to_me_hw(dev);
u32 me_csr;
char read_ptr, write_ptr;
unsigned char buffer_depth, filled_slots;
hw->me_hw_state = mei_me_mecsr_read(hw);
buffer_depth = (unsigned char)((hw->me_hw_state & ME_CBD_HRA) >> 24);
read_ptr = (char) ((hw->me_hw_state & ME_CBRP_HRA) >> 8);
write_ptr = (char) ((hw->me_hw_state & ME_CBWP_HRA) >> 16);
me_csr = mei_me_mecsr_read(hw);
buffer_depth = (unsigned char)((me_csr & ME_CBD_HRA) >> 24);
read_ptr = (char) ((me_csr & ME_CBRP_HRA) >> 8);
write_ptr = (char) ((me_csr & ME_CBWP_HRA) >> 16);
filled_slots = (unsigned char) (write_ptr - read_ptr);
/* check for overflow */

7
drivers/misc/mei/hw-me.h
View File

@ -51,18 +51,11 @@ struct mei_cfg {
*
* @cfg: per device generation config and ops
* @mem_addr: io memory address
* @host_hw_state: cached host state
* @me_hw_state: cached me (fw) state
* @pg_state: power gating state
*/
struct mei_me_hw {
const struct mei_cfg *cfg;
void __iomem *mem_addr;
/*
* hw states of host and fw(ME)
*/
u32 host_hw_state;
u32 me_hw_state;
enum mei_pg_state pg_state;
};