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Commit 753f4783 authored by David VomLehn's avatar David VomLehn Committed by David S. Miller
Browse files

net: ethernet: aquantia: Hardware interface and utility functions 



Add functions to interface with the hardware and some utility functions.

Signed-off-by: default avatarAlexander Loktionov <Alexander.Loktionov@aquantia.com>
Signed-off-by: default avatarDmitrii Tarakanov <Dmitrii.Tarakanov@aquantia.com>
Signed-off-by: default avatarPavel Belous <Pavel.Belous@aquantia.com>
Signed-off-by: default avatarDmitry Bezrukov <Dmitry.Bezrukov@aquantia.com>
Signed-off-by: default avatarDavid M. VomLehn <vomlehn@texas.net>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 98c4c201

drivers/net/ethernet/aquantia/atlantic/aq_hw.h

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/*

 * 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 */

drivers/net/ethernet/aquantia/atlantic/aq_hw_utils.c

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Original line number Diff line number Diff line 
/*

 * 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;

}

drivers/net/ethernet/aquantia/atlantic/aq_hw_utils.h

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+47 −0
Original line number Diff line number Diff line 
/*

 * 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 */