net/mlx5: Move internal timer read function to clock library

Move mlx5_read_internal_timer() into lib/clock.c file as it is being
used there. As such, make this function a static one.

In addition, rearrange headers include to support function move.
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Reviewed-by: Aya Levin <ayal@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

drivers/net/ethernet/mellanox/mlx5/core/en.h

@@ -36,7 +36,6 @@
 #include <linux/etherdevice.h>
 #include <linux/timecounter.h>
 #include <linux/net_tstamp.h>
-#include <linux/ptp_clock_kernel.h>
 #include <linux/crash_dump.h>
 #include <linux/mlx5/driver.h>
 #include <linux/mlx5/qp.h>

drivers/net/ethernet/mellanox/mlx5/core/lib/clock.c

@@ -32,6 +32,7 @@
 
 #include <linux/clocksource.h>
 #include <linux/highmem.h>
+#include <linux/ptp_clock_kernel.h>
 #include <rdma/mlx5-abi.h>
 #include "lib/eq.h"
 #include "en.h"
@@ -66,6 +67,26 @@ enum {
 	MLX5_MTPPS_FS_ENH_OUT_PER_ADJ		= BIT(0x7),
 };
 
+static u64 mlx5_read_internal_timer(struct mlx5_core_dev *dev,
+				    struct ptp_system_timestamp *sts)
+{
+	u32 timer_h, timer_h1, timer_l;
+
+	timer_h = ioread32be(&dev->iseg->internal_timer_h);
+	ptp_read_system_prets(sts);
+	timer_l = ioread32be(&dev->iseg->internal_timer_l);
+	ptp_read_system_postts(sts);
+	timer_h1 = ioread32be(&dev->iseg->internal_timer_h);
+	if (timer_h != timer_h1) {
+		/* wrap around */
+		ptp_read_system_prets(sts);
+		timer_l = ioread32be(&dev->iseg->internal_timer_l);
+		ptp_read_system_postts(sts);
+	}
+
+	return (u64)timer_l | (u64)timer_h1 << 32;
+}
+
 static u64 read_internal_timer(const struct cyclecounter *cc)
 {
 	struct mlx5_clock *clock = container_of(cc, struct mlx5_clock, cycles);

drivers/net/ethernet/mellanox/mlx5/core/main.c

@@ -672,26 +672,6 @@ int mlx5_core_disable_hca(struct mlx5_core_dev *dev, u16 func_id)
 	return mlx5_cmd_exec_in(dev, disable_hca, in);
 }
 
-u64 mlx5_read_internal_timer(struct mlx5_core_dev *dev,
-			     struct ptp_system_timestamp *sts)
-{
-	u32 timer_h, timer_h1, timer_l;
-
-	timer_h = ioread32be(&dev->iseg->internal_timer_h);
-	ptp_read_system_prets(sts);
-	timer_l = ioread32be(&dev->iseg->internal_timer_l);
-	ptp_read_system_postts(sts);
-	timer_h1 = ioread32be(&dev->iseg->internal_timer_h);
-	if (timer_h != timer_h1) {
-		/* wrap around */
-		ptp_read_system_prets(sts);
-		timer_l = ioread32be(&dev->iseg->internal_timer_l);
-		ptp_read_system_postts(sts);
-	}
-
-	return (u64)timer_l | (u64)timer_h1 << 32;
-}
-
 static int mlx5_core_set_issi(struct mlx5_core_dev *dev)
 {
 	u32 query_out[MLX5_ST_SZ_DW(query_issi_out)] = {};

drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h

@@ -38,7 +38,6 @@
 #include <linux/sched.h>
 #include <linux/if_link.h>
 #include <linux/firmware.h>
-#include <linux/ptp_clock_kernel.h>
 #include <linux/mlx5/cq.h>
 #include <linux/mlx5/fs.h>
 #include <linux/mlx5/driver.h>
@@ -141,8 +140,6 @@ int mlx5_modify_scheduling_element_cmd(struct mlx5_core_dev *dev, u8 hierarchy,
 int mlx5_destroy_scheduling_element_cmd(struct mlx5_core_dev *dev, u8 hierarchy,
 					u32 element_id);
 int mlx5_wait_for_pages(struct mlx5_core_dev *dev, int *pages);
-u64 mlx5_read_internal_timer(struct mlx5_core_dev *dev,
-			     struct ptp_system_timestamp *sts);
 
 void mlx5_cmd_trigger_completions(struct mlx5_core_dev *dev);
 void mlx5_cmd_flush(struct mlx5_core_dev *dev);