From patchwork Thu Jan 19 21:33:18 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Loktionov X-Patchwork-Id: 717359 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3v4HDm4gN2z9t1C for ; Fri, 20 Jan 2017 08:35:04 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752284AbdASVex (ORCPT ); Thu, 19 Jan 2017 16:34:53 -0500 Received: from barracuda1.aus1.datafoundry.com ([209.99.124.132]:44693 "EHLO milter.aus.datafoundry.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751975AbdASVee (ORCPT ); Thu, 19 Jan 2017 16:34:34 -0500 X-ASG-Debug-ID: 1484861628-0575761b3815b500001-BZBGGp Received: from texasnet.proxy1.mail.aus.datafoundry.com (texasnet.proxy1.mail.aus.datafoundry.com [209.99.125.96]) by milter.aus.datafoundry.com with ESMTP id p6h7LaMWFS55GfTu; Thu, 19 Jan 2017 15:33:48 -0600 (CST) X-Barracuda-Envelope-From: vomlehn@texas.net X-Barracuda-Apparent-Source-IP: 209.99.125.96 Received: from gracie.hsd1.ca.comcast.net (c-73-223-75-254.hsd1.ca.comcast.net [73.223.75.254]) by texasnet.proxy1.mail.aus.datafoundry.com (Postfix) with ESMTPSA id 7089320092; Thu, 19 Jan 2017 15:33:47 -0600 (CST) From: Alexander Loktionov To: netdev@vger.kernel.org, David VomLehn Cc: "David S . Miller" , Simon Edelhaus , Alexander Loktionov , Dmitrii Tarakanov , Pavel Belous , Dmitry Bezrukov Subject: [PATCH v7 10/13] net: ethernet: aquantia: Hardware interface and utility functions Date: Thu, 19 Jan 2017 13:33:18 -0800 X-ASG-Orig-Subj: [PATCH v7 10/13] net: ethernet: aquantia: Hardware interface and utility functions Message-Id: <4af27936d91148b266fee653fa49c47d23a0c9fa.1484860589.git.vomlehn@texas.net> X-Mailer: git-send-email 2.9.3 In-Reply-To: References: In-Reply-To: References: X-Barracuda-Connect: texasnet.proxy1.mail.aus.datafoundry.com[209.99.125.96] X-Barracuda-Start-Time: 1484861628 X-Barracuda-URL: https://209.99.124.132:443/cgi-mod/mark.cgi Received-SPF: softfail (datafoundry.com: domain of transitioning vomlehn@texas.net does not designate 73.223.75.254 as permitted sender) X-Virus-Scanned: by bsmtpd at datafoundry.com X-Barracuda-BRTS-Status: 1 X-Barracuda-Spam-Score: 0.50 X-Barracuda-Spam-Status: No, SCORE=0.50 using per-user scores of TAG_LEVEL=1000.0 QUARANTINE_LEVEL=1000.0 KILL_LEVEL=5.0 tests=BSF_RULE7568M, BSF_SC0_MISMATCH_TO, BSF_SPF_SOFTFAIL X-Barracuda-Spam-Report: Code version 3.2, rules version 3.2.3.35926 Rule breakdown below pts rule name description ---- ---------------------- -------------------------------------------------- 0.00 BSF_SC0_MISMATCH_TO Envelope rcpt doesn't match header 0.50 BSF_RULE7568M Custom Rule 7568M 0.00 BSF_SPF_SOFTFAIL Custom Rule SPF Softfail Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: David VomLehn Add functions to interface with the hardware and some utility functions. Signed-off-by: Alexander Loktionov Signed-off-by: Dmitrii Tarakanov Signed-off-by: Pavel Belous Signed-off-by: Dmitry Bezrukov Signed-off-by: David M. VomLehn --- 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 */