lkml.org 
[lkml]   [2018]   [Jul]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[char-misc-next 1/3] mei: cleanup slots to data conversions
Date
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>
---
drivers/misc/mei/client.c | 2 +-
drivers/misc/mei/hw-me.c | 8 ++++----
drivers/misc/mei/hw-txe.c | 8 ++++----
drivers/misc/mei/mei_dev.h | 8 +++++---
4 files changed, 14 insertions(+), 12 deletions(-)

diff --git a/drivers/misc/mei/client.c b/drivers/misc/mei/client.c
index 5a673d09585f..79e200d71652 100644
--- a/drivers/misc/mei/client.c
+++ b/drivers/misc/mei/client.c
@@ -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 {
diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c
index 5bbea13ab171..016b7c956f18 100644
--- a/drivers/misc/mei/hw-me.c
+++ b/drivers/misc/mei/hw-me.c
@@ -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) {
diff --git a/drivers/misc/mei/hw-txe.c b/drivers/misc/mei/hw-txe.c
index a5e551ffb2dd..0facd823634e 100644
--- a/drivers/misc/mei/hw-txe.c
+++ b/drivers/misc/mei/hw-txe.c
@@ -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);
diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h
index d522585b71b7..897126dca5d0 100644
--- a/drivers/misc/mei/mei_dev.h
+++ b/drivers/misc/mei/mei_dev.h
@@ -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;
}

/*
--
2.14.4
\
 
 \ /
  Last update: 2018-07-23 12:24    [W:0.038 / U:0.532 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site