From cadf1e919c3bc0dd43d514f27fff497cf61efc80 Mon Sep 17 00:00:00 2001 From: Igor Russkikh Date: Fri, 6 Nov 2020 18:38:28 -0500 Subject: [PATCH 131/139] [netdrv] net: atlantic: add support for 64-bit reads/writes Message-id: <1604687916-15087-132-git-send-email-irusskik@redhat.com> Patchwork-id: 338556 Patchwork-instance: patchwork O-Subject: [RHEL8.4 BZ 1857861 131/139] net: atlantic: add support for 64-bit reads/writes Bugzilla: 1857861 RH-Acked-by: David Arcari RH-Acked-by: John Linville RH-Acked-by: Tony Camuso Bugzilla: http://bugzilla.redhat.com/1857861 commit 1e41b3fee795faa8a67713749a21e60828ae21ad Author: Pavel Belous Date: Mon Jul 20 21:32:40 2020 +0300 net: atlantic: add support for 64-bit reads/writes This patch adds support for 64-bit reads/writes where applicable, e.g. A2 supports them. Signed-off-by: Pavel Belous Signed-off-by: Mark Starovoytov Signed-off-by: Igor Russkikh Signed-off-by: David S. Miller Signed-off-by: Igor Russkikh Cc: David Arcari Cc: Igor Russkikh Signed-off-by: Jan Stancek --- drivers/net/ethernet/aquantia/atlantic/aq_hw.h | 1 + .../net/ethernet/aquantia/atlantic/aq_hw_utils.c | 29 ++++++++++++++++++---- .../net/ethernet/aquantia/atlantic/aq_hw_utils.h | 8 +++--- .../ethernet/aquantia/atlantic/hw_atl/hw_atl_a0.c | 1 + .../ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c | 1 + .../ethernet/aquantia/atlantic/hw_atl2/hw_atl2.c | 1 + 6 files changed, 33 insertions(+), 8 deletions(-) diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_hw.h b/drivers/net/ethernet/aquantia/atlantic/aq_hw.h index 986f13809ad5..9d0c43325fc3 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 quirks; 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..ae85c0a7d238 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 @@ -9,6 +10,9 @@ */ #include "aq_hw_utils.h" + +#include + #include "aq_hw.h" #include "aq_nic.h" @@ -56,13 +60,28 @@ 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; - value |= (u64)aq_hw_read_reg(hw, reg + 4) << 32; + if (hw->aq_nic_cfg->aq_hw_caps->op64bit) + value = readq(hw->mmio + reg); + else + value = lo_hi_readq(hw->mmio + reg); + + 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) +{ + if (hw->aq_nic_cfg->aq_hw_caps->op64bit) + writeq(value, hw->mmio + reg); + else + lo_hi_writeq(value, hw->mmio + reg); +} + 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 732b570b40d6..59297e971ade 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, \ -- 2.13.6