mlxsw: reg: Add lossless settings for PBMC register
When configuring PAUSE frames and PFC we'll need to configure the
Xon/Xoff threshold for the priority group (PG) buffers.
Add the Xon/Xoff threshold fields to the PBMC register so that we can
configure these when needed.
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/mellanox/mlxsw/reg.h b/drivers/net/ethernet/mellanox/mlxsw/reg.h
index b83514a..bcd38ff 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/reg.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/reg.h
@@ -2788,6 +2788,30 @@
*/
MLXSW_ITEM32_INDEXED(reg, pbmc, buf_size, 0x0C, 0, 16, 0x08, 0x00, false);
+/* reg_pbmc_buf_xoff_threshold
+ * Once the amount of data in the buffer goes above this value, device
+ * starts sending PFC frames for all priorities associated with the
+ * buffer. Units are represented in cells. Reserved in case of lossy
+ * buffer.
+ * Access: RW
+ *
+ * Note: In Spectrum, reserved for buffer[9].
+ */
+MLXSW_ITEM32_INDEXED(reg, pbmc, buf_xoff_threshold, 0x0C, 16, 16,
+ 0x08, 0x04, false);
+
+/* reg_pbmc_buf_xon_threshold
+ * When the amount of data in the buffer goes below this value, device
+ * stops sending PFC frames for the priorities associated with the
+ * buffer. Units are represented in cells. Reserved in case of lossy
+ * buffer.
+ * Access: RW
+ *
+ * Note: In Spectrum, reserved for buffer[9].
+ */
+MLXSW_ITEM32_INDEXED(reg, pbmc, buf_xon_threshold, 0x0C, 0, 16,
+ 0x08, 0x04, false);
+
static inline void mlxsw_reg_pbmc_pack(char *payload, u8 local_port,
u16 xoff_timer_value, u16 xoff_refresh)
{
@@ -2806,6 +2830,17 @@
mlxsw_reg_pbmc_buf_size_set(payload, buf_index, size);
}
+static inline void mlxsw_reg_pbmc_lossless_buffer_pack(char *payload,
+ int buf_index, u16 size,
+ u16 threshold)
+{
+ mlxsw_reg_pbmc_buf_lossy_set(payload, buf_index, 0);
+ mlxsw_reg_pbmc_buf_epsb_set(payload, buf_index, 0);
+ mlxsw_reg_pbmc_buf_size_set(payload, buf_index, size);
+ mlxsw_reg_pbmc_buf_xoff_threshold_set(payload, buf_index, threshold);
+ mlxsw_reg_pbmc_buf_xon_threshold_set(payload, buf_index, threshold);
+}
+
/* PSPA - Port Switch Partition Allocation
* ---------------------------------------
* Controls the association of a port with a switch partition and enables