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mei: cleanup slots to data conversions 

Cleanup conversions between slots and data.
Define MEI_SLOT_SIZE instead of using 4 or sizeof(u32) across
the source code.

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tomas Winkler 2018-07-23 13:21:22 +03:00 committed by Greg Kroah-Hartman
parent 670d198b61
commit 9fc5f0f8ad
4 changed files with 14 additions and 12 deletions
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2
drivers/misc/mei/client.c
View File

@ -1597,7 +1597,7 @@ int mei_cl_irq_write(struct mei_cl *cl, struct mei_cl_cb *cb,
/* Split the message only if we can write the whole host buffer */
} else if ((u32)slots == dev->hbuf_depth) {
msg_slots = slots;
len = (slots * sizeof(u32)) - sizeof(struct mei_msg_hdr);
len = mei_slots2data(slots) - sizeof(struct mei_msg_hdr);
mei_hdr.length = len;
mei_hdr.msg_complete = 0;
} else {

8
drivers/misc/mei/hw-me.c
View File

@ -511,7 +511,7 @@ static int mei_me_hbuf_empty_slots(struct mei_device *dev)
*/
static size_t mei_me_hbuf_max_len(const struct mei_device *dev)
{
return dev->hbuf_depth * sizeof(u32) - sizeof(struct mei_msg_hdr);
return mei_slots2data(dev->hbuf_depth) - sizeof(struct mei_msg_hdr);
}
@ -549,7 +549,7 @@ static int mei_me_hbuf_write(struct mei_device *dev,
mei_me_hcbww_write(dev, *((u32 *) header));
for (i = 0; i < length / 4; i++)
for (i = 0; i < length / MEI_SLOT_SIZE; i++)
mei_me_hcbww_write(dev, reg_buf[i]);
rem = length & 0x3;
@ -604,11 +604,11 @@ static int mei_me_count_full_read_slots(struct mei_device *dev)
* Return: always 0
*/
static int mei_me_read_slots(struct mei_device *dev, unsigned char *buffer,
unsigned long buffer_length)
unsigned long buffer_length)
{
u32 *reg_buf = (u32 *)buffer;
for (; buffer_length >= sizeof(u32); buffer_length -= sizeof(u32))
for (; buffer_length >= MEI_SLOT_SIZE; buffer_length -= MEI_SLOT_SIZE)
*reg_buf++ = mei_me_mecbrw_read(dev);
if (buffer_length > 0) {

8
drivers/misc/mei/hw-txe.c
View File

@ -682,7 +682,7 @@ static void mei_txe_hw_config(struct mei_device *dev)
struct mei_txe_hw *hw = to_txe_hw(dev);
/* Doesn't change in runtime */
dev->hbuf_depth = PAYLOAD_SIZE / 4;
dev->hbuf_depth = PAYLOAD_SIZE / MEI_SLOT_SIZE;
hw->aliveness = mei_txe_aliveness_get(dev);
hw->readiness = mei_txe_readiness_get(dev);
@ -766,7 +766,7 @@ static int mei_txe_write(struct mei_device *dev,
*
* @dev: the device structure
*
* Return: the PAYLOAD_SIZE - 4
* Return: the PAYLOAD_SIZE - header size
*/
static size_t mei_txe_hbuf_max_len(const struct mei_device *dev)
{
@ -797,7 +797,7 @@ static int mei_txe_hbuf_empty_slots(struct mei_device *dev)
static int mei_txe_count_full_read_slots(struct mei_device *dev)
{
/* read buffers has static size */
return PAYLOAD_SIZE / 4;
return PAYLOAD_SIZE / MEI_SLOT_SIZE;
}
/**
@ -839,7 +839,7 @@ static int mei_txe_read(struct mei_device *dev,
dev_dbg(dev->dev, "buffer-length = %lu buf[0]0x%08X\n",
len, mei_txe_out_data_read(dev, 0));
for (i = 0; i < len / 4; i++) {
for (i = 0; i < len / MEI_SLOT_SIZE; i++) {
/* skip header: index starts from 1 */
reg = mei_txe_out_data_read(dev, i + 1);
dev_dbg(dev->dev, "buf[%d] = 0x%08X\n", i, reg);

8
drivers/misc/mei/mei_dev.h
View File

@ -26,7 +26,9 @@
#include "hw.h"
#include "hbm.h"
#define MEI_RD_MSG_BUF_SIZE (128 * sizeof(u32))
#define MEI_SLOT_SIZE sizeof(u32)
#define MEI_RD_MSG_BUF_SIZE (128 * MEI_SLOT_SIZE)
/*
* Number of Maximum MEI Clients
@ -540,7 +542,7 @@ static inline unsigned long mei_secs_to_jiffies(unsigned long sec)
*/
static inline u32 mei_data2slots(size_t length)
{
return DIV_ROUND_UP(sizeof(struct mei_msg_hdr) + length, 4);
return DIV_ROUND_UP(sizeof(struct mei_msg_hdr) + length, MEI_SLOT_SIZE);
}
/**
@ -552,7 +554,7 @@ static inline u32 mei_data2slots(size_t length)
*/
static inline u32 mei_slots2data(int slots)
{
return slots * 4;
return slots * MEI_SLOT_SIZE;
}
/*