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Message-Id: <4af27936d91148b266fee653fa49c47d23a0c9fa.1484860589.git.vomlehn@texas.net>
Date: Thu, 19 Jan 2017 13:33:18 -0800
From: Alexander Loktionov <Alexander.Loktionov@...antia.com>
To: netdev@...r.kernel.org, David VomLehn <vomlehn@...as.net>
Cc: "David S . Miller" <davem@...emloft.net>,
Simon Edelhaus <Simon.Edelhaus@...antia.com>,
Alexander Loktionov <Alexander.Loktionov@...antia.com>,
Dmitrii Tarakanov <Dmitrii.Tarakanov@...antia.com>,
Pavel Belous <Pavel.Belous@...antia.com>,
Dmitry Bezrukov <Dmitry.Bezrukov@...antia.com>
Subject: [PATCH v7 10/13] net: ethernet: aquantia: Hardware interface and utility functions
From: David VomLehn <vomlehn@...as.net>
Add functions to interface with the hardware and some utility functions.
Signed-off-by: Alexander Loktionov <Alexander.Loktionov@...antia.com>
Signed-off-by: Dmitrii Tarakanov <Dmitrii.Tarakanov@...antia.com>
Signed-off-by: Pavel Belous <Pavel.Belous@...antia.com>
Signed-off-by: Dmitry Bezrukov <Dmitry.Bezrukov@...antia.com>
Signed-off-by: David M. VomLehn <vomlehn@...as.net>
---
drivers/net/ethernet/aquantia/atlantic/aq_hw.h | 177 +++++++++++++++++++++
.../net/ethernet/aquantia/atlantic/aq_hw_utils.c | 68 ++++++++
.../net/ethernet/aquantia/atlantic/aq_hw_utils.h | 47 ++++++
3 files changed, 292 insertions(+)
create mode 100644 drivers/net/ethernet/aquantia/atlantic/aq_hw.h
create mode 100644 drivers/net/ethernet/aquantia/atlantic/aq_hw_utils.c
create mode 100644 drivers/net/ethernet/aquantia/atlantic/aq_hw_utils.h
diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_hw.h b/drivers/net/ethernet/aquantia/atlantic/aq_hw.h
new file mode 100644
index 0000000..fce0fd3
--- /dev/null
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_hw.h
@@ -0,0 +1,177 @@
+/*
+ * aQuantia Corporation Network Driver
+ * Copyright (C) 2014-2017 aQuantia Corporation. All rights reserved
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ */
+
+/* File aq_hw.h: Declaraion of abstract interface for NIC hardware specific
+ * functions.
+ */
+
+#ifndef AQ_HW_H
+#define AQ_HW_H
+
+#include "aq_common.h"
+
+/* NIC H/W capabilities */
+struct aq_hw_caps_s {
+ u64 hw_features;
+ u64 link_speed_msk;
+ unsigned int hw_priv_flags;
+ u32 rxds;
+ u32 txds;
+ u32 txhwb_alignment;
+ u32 irq_mask;
+ u32 vecs;
+ u32 mtu;
+ u32 mac_regs_count;
+ u8 ports;
+ u8 msix_irqs;
+ u8 tcs;
+ u8 rxd_alignment;
+ u8 rxd_size;
+ u8 txd_alignment;
+ u8 txd_size;
+ u8 tx_rings;
+ u8 rx_rings;
+ bool flow_control;
+ bool is_64_dma;
+ u32 fw_ver_expected;
+};
+
+struct aq_hw_link_status_s {
+ unsigned int mbps;
+};
+
+#define AQ_HW_IRQ_INVALID 0U
+#define AQ_HW_IRQ_LEGACY 1U
+#define AQ_HW_IRQ_MSI 2U
+#define AQ_HW_IRQ_MSIX 3U
+
+#define AQ_HW_POWER_STATE_D0 0U
+#define AQ_HW_POWER_STATE_D3 3U
+
+#define AQ_HW_FLAG_STARTED 0x00000004U
+#define AQ_HW_FLAG_STOPPING 0x00000008U
+#define AQ_HW_FLAG_RESETTING 0x00000010U
+#define AQ_HW_FLAG_CLOSING 0x00000020U
+#define AQ_HW_LINK_DOWN 0x04000000U
+#define AQ_HW_FLAG_ERR_UNPLUG 0x40000000U
+#define AQ_HW_FLAG_ERR_HW 0x80000000U
+
+#define AQ_HW_FLAG_ERRORS (AQ_HW_FLAG_ERR_HW | AQ_HW_FLAG_ERR_UNPLUG)
+
+struct aq_hw_s {
+ struct aq_obj_s header;
+ struct aq_nic_cfg_s *aq_nic_cfg;
+ struct aq_pci_func_s *aq_pci_func;
+ void __iomem *mmio;
+ unsigned int not_ff_addr;
+ struct aq_hw_link_status_s aq_link_status;
+};
+
+struct aq_ring_s;
+struct aq_ring_param_s;
+struct aq_nic_cfg_s;
+struct sk_buff;
+
+struct aq_hw_ops {
+ struct aq_hw_s *(*create)(struct aq_pci_func_s *aq_pci_func,
+ unsigned int port, struct aq_hw_ops *ops);
+
+ void (*destroy)(struct aq_hw_s *self);
+
+ int (*get_hw_caps)(struct aq_hw_s *self,
+ struct aq_hw_caps_s *aq_hw_caps);
+
+ int (*hw_ring_tx_xmit)(struct aq_hw_s *self, struct aq_ring_s *aq_ring,
+ unsigned int frags);
+
+ int (*hw_ring_rx_receive)(struct aq_hw_s *self,
+ struct aq_ring_s *aq_ring);
+
+ int (*hw_ring_rx_fill)(struct aq_hw_s *self, struct aq_ring_s *aq_ring,
+ unsigned int sw_tail_old);
+
+ int (*hw_ring_tx_head_update)(struct aq_hw_s *self,
+ struct aq_ring_s *aq_ring);
+
+ int (*hw_get_mac_permanent)(struct aq_hw_s *self,
+ struct aq_hw_caps_s *aq_hw_caps,
+ u8 *mac);
+
+ int (*hw_set_mac_address)(struct aq_hw_s *self, u8 *mac_addr);
+
+ int (*hw_get_link_status)(struct aq_hw_s *self,
+ struct aq_hw_link_status_s *link_status);
+
+ int (*hw_set_link_speed)(struct aq_hw_s *self, u32 speed);
+
+ int (*hw_reset)(struct aq_hw_s *self);
+
+ int (*hw_init)(struct aq_hw_s *self, struct aq_nic_cfg_s *aq_nic_cfg,
+ u8 *mac_addr);
+
+ int (*hw_start)(struct aq_hw_s *self);
+
+ int (*hw_stop)(struct aq_hw_s *self);
+
+ int (*hw_ring_tx_init)(struct aq_hw_s *self, struct aq_ring_s *aq_ring,
+ struct aq_ring_param_s *aq_ring_param);
+
+ int (*hw_ring_tx_start)(struct aq_hw_s *self,
+ struct aq_ring_s *aq_ring);
+
+ int (*hw_ring_tx_stop)(struct aq_hw_s *self,
+ struct aq_ring_s *aq_ring);
+
+ int (*hw_ring_rx_init)(struct aq_hw_s *self,
+ struct aq_ring_s *aq_ring,
+ struct aq_ring_param_s *aq_ring_param);
+
+ int (*hw_ring_rx_start)(struct aq_hw_s *self,
+ struct aq_ring_s *aq_ring);
+
+ int (*hw_ring_rx_stop)(struct aq_hw_s *self,
+ struct aq_ring_s *aq_ring);
+
+ int (*hw_irq_enable)(struct aq_hw_s *self, u64 mask);
+
+ int (*hw_irq_disable)(struct aq_hw_s *self, u64 mask);
+
+ int (*hw_irq_read)(struct aq_hw_s *self, u64 *mask);
+
+ int (*hw_packet_filter_set)(struct aq_hw_s *self,
+ unsigned int packet_filter);
+
+ int (*hw_multicast_list_set)(struct aq_hw_s *self,
+ u8 ar_mac[AQ_CFG_MULTICAST_ADDRESS_MAX]
+ [ETH_ALEN],
+ u32 count);
+
+ int (*hw_interrupt_moderation_set)(struct aq_hw_s *self,
+ bool itr_enabled);
+
+ int (*hw_rss_set)(struct aq_hw_s *self,
+ struct aq_rss_parameters *rss_params);
+
+ int (*hw_rss_hash_set)(struct aq_hw_s *self,
+ struct aq_rss_parameters *rss_params);
+
+ int (*hw_get_regs)(struct aq_hw_s *self,
+ struct aq_hw_caps_s *aq_hw_caps, u32 *regs_buff);
+
+ int (*hw_get_hw_stats)(struct aq_hw_s *self, u64 *data,
+ unsigned int *p_count);
+
+ int (*hw_get_fw_version)(struct aq_hw_s *self, u32 *fw_version);
+
+ int (*hw_deinit)(struct aq_hw_s *self);
+
+ int (*hw_set_power)(struct aq_hw_s *self, unsigned int power_state);
+};
+
+#endif /* AQ_HW_H */
diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_hw_utils.c b/drivers/net/ethernet/aquantia/atlantic/aq_hw_utils.c
new file mode 100644
index 0000000..5f13465
--- /dev/null
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_hw_utils.c
@@ -0,0 +1,68 @@
+/*
+ * aQuantia Corporation Network Driver
+ * Copyright (C) 2014-2017 aQuantia Corporation. All rights reserved
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ */
+
+/* File aq_hw_utils.c: Definitions of helper functions used across
+ * hardware layer.
+ */
+
+#include "aq_hw_utils.h"
+#include "aq_hw.h"
+
+void aq_hw_write_reg_bit(struct aq_hw_s *aq_hw, u32 addr, u32 msk,
+ u32 shift, u32 val)
+{
+ if (msk ^ ~0) {
+ u32 reg_old, reg_new;
+
+ reg_old = aq_hw_read_reg(aq_hw, addr);
+ reg_new = (reg_old & (~msk)) | (val << shift);
+
+ if (reg_old != reg_new)
+ aq_hw_write_reg(aq_hw, addr, reg_new);
+ } else {
+ aq_hw_write_reg(aq_hw, addr, val);
+ }
+}
+
+u32 aq_hw_read_reg_bit(struct aq_hw_s *aq_hw, u32 addr, u32 msk, u32 shift)
+{
+ return ((aq_hw_read_reg(aq_hw, addr) & msk) >> shift);
+}
+
+u32 aq_hw_read_reg(struct aq_hw_s *hw, u32 reg)
+{
+ u32 value = readl(hw->mmio + reg);
+
+ if ((~0U) == value && (~0U) == readl(hw->mmio + hw->not_ff_addr))
+ aq_utils_obj_set(&hw->header.flags, AQ_HW_FLAG_ERR_UNPLUG);
+
+ return value;
+}
+
+void aq_hw_write_reg(struct aq_hw_s *hw, u32 reg, u32 value)
+{
+ writel(value, hw->mmio + reg);
+}
+
+int aq_hw_err_from_flags(struct aq_hw_s *hw)
+{
+ int err = 0;
+
+ if (aq_utils_obj_test(&hw->header.flags, AQ_HW_FLAG_ERR_UNPLUG)) {
+ err = -ENXIO;
+ goto err_exit;
+ }
+ if (aq_utils_obj_test(&hw->header.flags, AQ_HW_FLAG_ERR_HW)) {
+ err = -EIO;
+ goto err_exit;
+ }
+
+err_exit:
+ return err;
+}
diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_hw_utils.h b/drivers/net/ethernet/aquantia/atlantic/aq_hw_utils.h
new file mode 100644
index 0000000..78fcc0c
--- /dev/null
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_hw_utils.h
@@ -0,0 +1,47 @@
+/*
+ * aQuantia Corporation Network Driver
+ * Copyright (C) 2014-2017 aQuantia Corporation. All rights reserved
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ */
+
+/* File aq_hw_utils.h: Declaration of helper functions used across hardware
+ * layer.
+ */
+
+#ifndef AQ_HW_UTILS_H
+#define AQ_HW_UTILS_H
+
+#include "aq_common.h"
+
+#ifndef HIDWORD
+#define LODWORD(_qw) ((u32)(_qw))
+#define HIDWORD(_qw) ((u32)(((_qw) >> 32) & 0xffffffff))
+#endif
+
+#define AQ_HW_SLEEP(_US_) mdelay(_US_)
+
+#define AQ_HW_WAIT_FOR(_B_, _US_, _N_) \
+do { \
+ unsigned int AQ_HW_WAIT_FOR_i; \
+ for (AQ_HW_WAIT_FOR_i = _N_; (!(_B_)) && (AQ_HW_WAIT_FOR_i);\
+ --AQ_HW_WAIT_FOR_i) {\
+ udelay(_US_); \
+ } \
+ if (!AQ_HW_WAIT_FOR_i) {\
+ err = ETIME; \
+ } \
+} while (0)
+
+struct aq_hw_s;
+
+void aq_hw_write_reg_bit(struct aq_hw_s *aq_hw, u32 addr, u32 msk,
+ u32 shift, u32 val);
+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);
+int aq_hw_err_from_flags(struct aq_hw_s *hw);
+
+#endif /* AQ_HW_UTILS_H */
--
2.9.3
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