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From 6f5c5d05c208ff797139ccf4908b50ffcfbfdac4 Mon Sep 17 00:00:00 2001
From: Igor Russkikh <irusskik@redhat.com>
Date: Fri, 6 Nov 2020 18:37:58 -0500
Subject: [PATCH 101/139] [netdrv] net: atlantic: always use random TC-queue
mapping for TX on A2
Message-id: <1604687916-15087-102-git-send-email-irusskik@redhat.com>
Patchwork-id: 338524
Patchwork-instance: patchwork
O-Subject: [RHEL8.4 BZ 1857861 101/139] net: atlantic: always use random TC-queue mapping for TX on A2.
Bugzilla: 1857861
RH-Acked-by: David Arcari <darcari@redhat.com>
RH-Acked-by: John Linville <linville@redhat.com>
RH-Acked-by: Tony Camuso <tcamuso@redhat.com>
Bugzilla: http://bugzilla.redhat.com/1857861
commit 5479e8436f32cdbe76d63119459a7d651c1c39ed
Author: Mark Starovoytov <mstarovoitov@marvell.com>
Date: Fri May 22 11:19:45 2020 +0300
net: atlantic: always use random TC-queue mapping for TX on A2.
This patch changes the TC-queue mapping mechanism used on A2.
Configure the A2 HW in such a way that we can keep queue index mapping
exactly as it was on A1.
Signed-off-by: Mark Starovoytov <mstarovoitov@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Igor Russkikh <irusskik@redhat.com>
Cc: David Arcari <darcari@redhat.com>
Cc: Igor Russkikh <irusskik@redhat.com>
Signed-off-by: Jan Stancek <jstancek@redhat.com>
---
.../ethernet/aquantia/atlantic/hw_atl2/hw_atl2.c | 31 ++++++++++++-----
.../aquantia/atlantic/hw_atl2/hw_atl2_llh.c | 9 +++++
.../aquantia/atlantic/hw_atl2/hw_atl2_llh.h | 4 +++
.../atlantic/hw_atl2/hw_atl2_llh_internal.h | 39 ++++++++++++++++++++--
4 files changed, 72 insertions(+), 11 deletions(-)
diff --git a/drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2.c b/drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2.c
index b42ff81adfeb..a5bffadde6df 100644
--- a/drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2.c
+++ b/drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2.c
@@ -95,7 +95,10 @@ static int hw_atl2_hw_queue_to_tc_map_set(struct aq_hw_s *self)
struct aq_nic_cfg_s *cfg = self->aq_nic_cfg;
unsigned int tcs, q_per_tc;
unsigned int tc, q;
- u32 value = 0;
+ u32 rx_map = 0;
+ u32 tx_map = 0;
+
+ hw_atl2_tpb_tx_tc_q_rand_map_en_set(self, 1U);
switch (cfg->tc_mode) {
case AQ_TC_MODE_8TCS:
@@ -113,14 +116,24 @@ static int hw_atl2_hw_queue_to_tc_map_set(struct aq_hw_s *self)
for (tc = 0; tc != tcs; tc++) {
unsigned int tc_q_offset = tc * q_per_tc;
- for (q = tc_q_offset; q != tc_q_offset + q_per_tc; q++)
- value |= tc << HW_ATL2_RX_Q_TC_MAP_SHIFT(q);
+ for (q = tc_q_offset; q != tc_q_offset + q_per_tc; q++) {
+ rx_map |= tc << HW_ATL2_RX_Q_TC_MAP_SHIFT(q);
+ if (HW_ATL2_RX_Q_TC_MAP_ADR(q) !=
+ HW_ATL2_RX_Q_TC_MAP_ADR(q + 1)) {
+ aq_hw_write_reg(self,
+ HW_ATL2_RX_Q_TC_MAP_ADR(q),
+ rx_map);
+ rx_map = 0;
+ }
- if (HW_ATL2_RX_Q_TC_MAP_ADR(q) !=
- HW_ATL2_RX_Q_TC_MAP_ADR(q - 1)) {
- aq_hw_write_reg(self, HW_ATL2_RX_Q_TC_MAP_ADR(q - 1),
- value);
- value = 0;
+ tx_map |= tc << HW_ATL2_TX_Q_TC_MAP_SHIFT(q);
+ if (HW_ATL2_TX_Q_TC_MAP_ADR(q) !=
+ HW_ATL2_TX_Q_TC_MAP_ADR(q + 1)) {
+ aq_hw_write_reg(self,
+ HW_ATL2_TX_Q_TC_MAP_ADR(q),
+ tx_map);
+ tx_map = 0;
+ }
}
}
@@ -181,7 +194,7 @@ static int hw_atl2_hw_qos_set(struct aq_hw_s *self)
hw_atl_rpf_rpb_user_priority_tc_map_set(self, prio,
cfg->prio_tc_map[prio]);
- /* ATL2 Apply legacy ring to TC mapping */
+ /* ATL2 Apply ring to TC mapping */
hw_atl2_hw_queue_to_tc_map_set(self);
return aq_hw_err_from_flags(self);
diff --git a/drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2_llh.c b/drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2_llh.c
index f096d0a6bda9..6817fa57cc83 100644
--- a/drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2_llh.c
+++ b/drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2_llh.c
@@ -68,6 +68,15 @@ void hw_atl2_rpf_vlan_flr_tag_set(struct aq_hw_s *aq_hw, u32 tag, u32 filter)
/* TX */
+void hw_atl2_tpb_tx_tc_q_rand_map_en_set(struct aq_hw_s *aq_hw,
+ const u32 tc_q_rand_map_en)
+{
+ aq_hw_write_reg_bit(aq_hw, HW_ATL2_TPB_TX_TC_Q_RAND_MAP_EN_ADR,
+ HW_ATL2_TPB_TX_TC_Q_RAND_MAP_EN_MSK,
+ HW_ATL2_TPB_TX_TC_Q_RAND_MAP_EN_SHIFT,
+ tc_q_rand_map_en);
+}
+
void hw_atl2_tpb_tx_buf_clk_gate_en_set(struct aq_hw_s *aq_hw, u32 clk_gate_en)
{
aq_hw_write_reg_bit(aq_hw, HW_ATL2_TPB_TX_BUF_CLK_GATE_EN_ADR,
diff --git a/drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2_llh.h b/drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2_llh.h
index 5c1ae755ffae..d4b087d1dec1 100644
--- a/drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2_llh.h
+++ b/drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2_llh.h
@@ -38,6 +38,10 @@ void hw_atl2_new_rpf_rss_redir_set(struct aq_hw_s *aq_hw, u32 tc, u32 index,
/* Set VLAN filter tag */
void hw_atl2_rpf_vlan_flr_tag_set(struct aq_hw_s *aq_hw, u32 tag, u32 filter);
+/* set tx random TC-queue mapping enable bit */
+void hw_atl2_tpb_tx_tc_q_rand_map_en_set(struct aq_hw_s *aq_hw,
+ const u32 tc_q_rand_map_en);
+
/* set tx buffer clock gate enable */
void hw_atl2_tpb_tx_buf_clk_gate_en_set(struct aq_hw_s *aq_hw, u32 clk_gate_en);
diff --git a/drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2_llh_internal.h b/drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2_llh_internal.h
index b0ac8cd581d7..bf0198ca4e85 100644
--- a/drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2_llh_internal.h
+++ b/drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2_llh_internal.h
@@ -132,6 +132,24 @@
/* Default value of bitfield rx_q{Q}_tc_map[2:0] */
#define HW_ATL2_RX_Q_TC_MAP_DEFAULT 0x0
+/* tx tx_tc_q_rand_map_en bitfield definitions
+ * preprocessor definitions for the bitfield "tx_tc_q_rand_map_en".
+ * port="pif_tpb_tx_tc_q_rand_map_en_i"
+ */
+
+/* register address for bitfield tx_tc_q_rand_map_en */
+#define HW_ATL2_TPB_TX_TC_Q_RAND_MAP_EN_ADR 0x00007900
+/* bitmask for bitfield tx_tc_q_rand_map_en */
+#define HW_ATL2_TPB_TX_TC_Q_RAND_MAP_EN_MSK 0x00000200
+/* inverted bitmask for bitfield tx_tc_q_rand_map_en */
+#define HW_ATL2_TPB_TX_TC_Q_RAND_MAP_EN_MSKN 0xFFFFFDFF
+/* lower bit position of bitfield tx_tc_q_rand_map_en */
+#define HW_ATL2_TPB_TX_TC_Q_RAND_MAP_EN_SHIFT 9
+/* width of bitfield tx_tc_q_rand_map_en */
+#define HW_ATL2_TPB_TX_TC_Q_RAND_MAP_EN_WIDTH 1
+/* default value of bitfield tx_tc_q_rand_map_en */
+#define HW_ATL2_TPB_TX_TC_Q_RAND_MAP_EN_DEFAULT 0x0
+
/* tx tx_buffer_clk_gate_en bitfield definitions
* preprocessor definitions for the bitfield "tx_buffer_clk_gate_en".
* port="pif_tpb_tx_buffer_clk_gate_en_i"
@@ -150,8 +168,25 @@
/* default value of bitfield tx_buffer_clk_gate_en */
#define HW_ATL2_TPB_TX_BUF_CLK_GATE_EN_DEFAULT 0x0
-/* tx data_tc{t}_credit_max[b:0] bitfield definitions
- * preprocessor definitions for the bitfield "data_tc{t}_credit_max[b:0]".
+/* tx tx_q_tc_map{q} bitfield definitions
+ * preprocessor definitions for the bitfield "tx_q_tc_map{q}".
+ * parameter: queue {q} | bit-level stride | range [0, 31]
+ * port="pif_tpb_tx_q_tc_map0_i[2:0]"
+ */
+
+/* register address for bitfield tx_q_tc_map{q} */
+#define HW_ATL2_TX_Q_TC_MAP_ADR(queue) \
+ (((queue) < 32) ? 0x0000799C + ((queue) / 4) * 4 : 0)
+/* lower bit position of bitfield tx_q_tc_map{q} */
+#define HW_ATL2_TX_Q_TC_MAP_SHIFT(queue) \
+ (((queue) < 32) ? ((queue) * 8) % 32 : 0)
+/* width of bitfield tx_q_tc_map{q} */
+#define HW_ATL2_TX_Q_TC_MAP_WIDTH 3
+/* default value of bitfield tx_q_tc_map{q} */
+#define HW_ATL2_TX_Q_TC_MAP_DEFAULT 0x0
+
+/* tx data_tc{t}_credit_max[f:0] bitfield definitions
+ * preprocessor definitions for the bitfield "data_tc{t}_credit_max[f:0]".
* parameter: tc {t} | stride size 0x4 | range [0, 7]
* port="pif_tps_data_tc0_credit_max_i[11:0]"
*/
--
2.13.6
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