sfc: Add a function pointer to abstract write of host time into NIC shared memory

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>

3 files changed, 16 insertions, 2 deletions

diff --git a/drivers/net/ethernet/sfc/net_driver.h b/drivers/net/ethernet/sfc/net_driver.h
index d33656bc4060..21b1c2a2a191 100644
--- a/drivers/net/ethernet/sfc/net_driver.h
+++ b/drivers/net/ethernet/sfc/net_driver.h
@@ -1117,6 +1117,7 @@ struct efx_nic_type {
                          size_t *retlen, const u8 *buffer);
         int (*mtd_sync)(struct mtd_info *mtd);
 #endif
+        void (*ptp_write_host_time)(struct efx_nic *efx, u32 host_time);
 
         int revision;
         unsigned int txd_ptr_tbl_base;
diff --git a/drivers/net/ethernet/sfc/ptp.c b/drivers/net/ethernet/sfc/ptp.c
index 4de2f8febd59..c60cabb6ff05 100644
--- a/drivers/net/ethernet/sfc/ptp.c
+++ b/drivers/net/ethernet/sfc/ptp.c
@@ -390,8 +390,7 @@ static void efx_ptp_send_times(struct efx_nic *efx,
                 host_time = (now.ts_real.tv_sec << MC_NANOSECOND_BITS |
                              now.ts_real.tv_nsec);
                 /* Update host time in NIC memory */
-                _efx_writed(efx, cpu_to_le32(host_time),
-                            FR_CZ_MC_TREG_SMEM + MC_SMEM_P0_PTP_TIME_OFST);
+                efx->type->ptp_write_host_time(efx, host_time);
         }
         *last_time = now;
 }
diff --git a/drivers/net/ethernet/sfc/siena.c b/drivers/net/ethernet/sfc/siena.c
index a51d90c4c6cf..3c0a54400260 100644
--- a/drivers/net/ethernet/sfc/siena.c
+++ b/drivers/net/ethernet/sfc/siena.c
@@ -855,6 +855,19 @@ fail:
 
 /**************************************************************************
  *
+ * PTP
+ *
+ **************************************************************************
+ */
+
+static void siena_ptp_write_host_time(struct efx_nic *efx, u32 host_time)
+{
+        _efx_writed(efx, cpu_to_le32(host_time),
+                    FR_CZ_MC_TREG_SMEM + MC_SMEM_P0_PTP_TIME_OFST);
+}
+
+/**************************************************************************
+ *
  * Revision-dependent attributes used by efx.c and nic.c
  *
  **************************************************************************
@@ -943,6 +956,7 @@ const struct efx_nic_type siena_a0_nic_type = {
         .mtd_write = efx_mcdi_mtd_write,
         .mtd_sync = efx_mcdi_mtd_sync,
 #endif
+        .ptp_write_host_time = siena_ptp_write_host_time,
 
         .revision = EFX_REV_SIENA_A0,
         .txd_ptr_tbl_base = FR_BZ_TX_DESC_PTR_TBL,