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Date: Mon, 13 Jul 2020 14:42:29 +0300
From: Igor Russkikh <irusskikh@...vell.com>
To: <netdev@...r.kernel.org>
CC: "David S . Miller" <davem@...emloft.net>,
Mark Starovoytov <mstarovoitov@...vell.com>,
Jakub Kicinski <kuba@...nel.org>,
Pavel Belous <pbelous@...vell.com>,
Igor Russkikh <irusskikh@...vell.com>
Subject: [PATCH net-next 06/10] net: atlantic: add support for 64-bit reads/writes
From: Pavel Belous <pbelous@...vell.com>
This patch adds support for 64-bit reads/writes where applicable, e.g.
A2 supports them.
Signed-off-by: Pavel Belous <pbelous@...vell.com>
Signed-off-by: Mark Starovoytov <mstarovoitov@...vell.com>
Signed-off-by: Igor Russkikh <irusskikh@...vell.com>
---
.../net/ethernet/aquantia/atlantic/aq_hw.h | 1 +
.../ethernet/aquantia/atlantic/aq_hw_utils.c | 35 ++++++++++++++++---
.../ethernet/aquantia/atlantic/aq_hw_utils.h | 8 +++--
.../aquantia/atlantic/hw_atl/hw_atl_a0.c | 1 +
.../aquantia/atlantic/hw_atl/hw_atl_b0.c | 1 +
.../aquantia/atlantic/hw_atl2/hw_atl2.c | 1 +
6 files changed, 39 insertions(+), 8 deletions(-)
diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_hw.h b/drivers/net/ethernet/aquantia/atlantic/aq_hw.h
index 9505918f252c..31606f512e05 100644
--- a/drivers/net/ethernet/aquantia/atlantic/aq_hw.h
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_hw.h
@@ -67,6 +67,7 @@ struct aq_hw_caps_s {
u8 rx_rings;
bool flow_control;
bool is_64_dma;
+ bool op64bit;
u32 priv_data_len;
};
diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_hw_utils.c b/drivers/net/ethernet/aquantia/atlantic/aq_hw_utils.c
index 342c5179f846..0172d2206685 100644
--- a/drivers/net/ethernet/aquantia/atlantic/aq_hw_utils.c
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_hw_utils.c
@@ -1,7 +1,8 @@
// SPDX-License-Identifier: GPL-2.0-only
-/*
- * aQuantia Corporation Network Driver
- * Copyright (C) 2014-2017 aQuantia Corporation. All rights reserved
+/* Atlantic Network Driver
+ *
+ * Copyright (C) 2014-2019 aQuantia Corporation
+ * Copyright (C) 2019-2020 Marvell International Ltd.
*/
/* File aq_hw_utils.c: Definitions of helper functions used across
@@ -56,13 +57,37 @@ void aq_hw_write_reg(struct aq_hw_s *hw, u32 reg, u32 value)
*/
u64 aq_hw_read_reg64(struct aq_hw_s *hw, u32 reg)
{
- u64 value = aq_hw_read_reg(hw, reg);
+ u64 value = U64_MAX;
+#ifdef CONFIG_X86_64
+ if (hw->aq_nic_cfg->aq_hw_caps->op64bit)
+ value = readq(hw->mmio + reg);
+ else
+#endif
+ {
+ value = aq_hw_read_reg(hw, reg);
+ value |= (u64)aq_hw_read_reg(hw, reg + 4) << 32;
+ }
- value |= (u64)aq_hw_read_reg(hw, reg + 4) << 32;
+ if (value == U64_MAX &&
+ readl(hw->mmio + hw->aq_nic_cfg->aq_hw_caps->hw_alive_check_addr) == U32_MAX)
+ aq_utils_obj_set(&hw->flags, AQ_HW_FLAG_ERR_UNPLUG);
return value;
}
+void aq_hw_write_reg64(struct aq_hw_s *hw, u32 reg, u64 value)
+{
+#ifdef CONFIG_X86_64
+ if (hw->aq_nic_cfg->aq_hw_caps->op64bit)
+ writeq(value, hw->mmio + reg);
+ else
+#endif
+ {
+ writel(lower_32_bits(value), hw->mmio + reg);
+ writel(upper_32_bits(value), hw->mmio + reg + sizeof(u32));
+ }
+}
+
int aq_hw_err_from_flags(struct aq_hw_s *hw)
{
int err = 0;
diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_hw_utils.h b/drivers/net/ethernet/aquantia/atlantic/aq_hw_utils.h
index 32aa5f2fb840..ffa6e4067c21 100644
--- a/drivers/net/ethernet/aquantia/atlantic/aq_hw_utils.h
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_hw_utils.h
@@ -1,7 +1,8 @@
/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * aQuantia Corporation Network Driver
- * Copyright (C) 2014-2017 aQuantia Corporation. All rights reserved
+/* Atlantic Network Driver
+ *
+ * Copyright (C) 2014-2019 aQuantia Corporation
+ * Copyright (C) 2019-2020 Marvell International Ltd.
*/
/* File aq_hw_utils.h: Declaration of helper functions used across hardware
@@ -33,6 +34,7 @@ u32 aq_hw_read_reg_bit(struct aq_hw_s *aq_hw, u32 addr, u32 msk, u32 shift);
u32 aq_hw_read_reg(struct aq_hw_s *hw, u32 reg);
void aq_hw_write_reg(struct aq_hw_s *hw, u32 reg, u32 value);
u64 aq_hw_read_reg64(struct aq_hw_s *hw, u32 reg);
+void aq_hw_write_reg64(struct aq_hw_s *hw, u32 reg, u64 value);
int aq_hw_err_from_flags(struct aq_hw_s *hw);
int aq_hw_num_tcs(struct aq_hw_s *hw);
int aq_hw_q_per_tc(struct aq_hw_s *hw);
diff --git a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_a0.c b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_a0.c
index a312864969af..8f8b90436ced 100644
--- a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_a0.c
+++ b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_a0.c
@@ -18,6 +18,7 @@
#define DEFAULT_A0_BOARD_BASIC_CAPABILITIES \
.is_64_dma = true, \
+ .op64bit = false, \
.msix_irqs = 4U, \
.irq_mask = ~0U, \
.vecs = HW_ATL_A0_RSS_MAX, \
diff --git a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c
index 51c8962b7a0e..ee74cad4a168 100644
--- a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c
+++ b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c
@@ -20,6 +20,7 @@
#define DEFAULT_B0_BOARD_BASIC_CAPABILITIES \
.is_64_dma = true, \
+ .op64bit = false, \
.msix_irqs = 8U, \
.irq_mask = ~0U, \
.vecs = HW_ATL_B0_RSS_MAX, \
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 c65e6daad0e5..92f64048bf69 100644
--- a/drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2.c
+++ b/drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2.c
@@ -21,6 +21,7 @@ static int hw_atl2_act_rslvr_table_set(struct aq_hw_s *self, u8 location,
#define DEFAULT_BOARD_BASIC_CAPABILITIES \
.is_64_dma = true, \
+ .op64bit = true, \
.msix_irqs = 8U, \
.irq_mask = ~0U, \
.vecs = HW_ATL2_RSS_MAX, \
--
2.17.1
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