fm10k: Add support for basic interaction with hardware (04a5aefb) · Commits · 戴 / test

drivers/net/ethernet/intel/fm10k/fm10k.h

+8 −1

Original line number	Diff line number	Diff line
		@@ -27,7 +27,14 @@
		#include <linux/if_vlan.h>
		#include <linux/pci.h>

		#include "fm10k_type.h"
		#include "fm10k_common.h"

		struct fm10k_intfc {
		struct pci_dev *pdev;

		struct fm10k_hw hw;
		u32 __iomem *uc_addr;
		};

		/* main */
		extern char fm10k_driver_name[];

drivers/net/ethernet/intel/fm10k/fm10k_common.h

0 → 100644

+44 −0

Original line number	Diff line number	Diff line
		/* Intel Ethernet Switch Host Interface Driver
		* Copyright(c) 2013 - 2014 Intel Corporation.
		*
		* 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.
		*
		* This program is distributed in the hope it will be useful, but WITHOUT
		* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
		* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
		* more details.
		*
		* The full GNU General Public License is included in this distribution in
		* the file called "COPYING".
		*
		* Contact Information:
		* e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
		* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
		*/

		#ifndef _FM10K_COMMON_H_
		#define _FM10K_COMMON_H_

		#include "fm10k_type.h"

		#define FM10K_REMOVED(hw_addr) unlikely(!(hw_addr))

		/* PCI configuration read */
		u16 fm10k_read_pci_cfg_word(struct fm10k_hw *hw, u32 reg);

		/* read operations, indexed using DWORDS */
		u32 fm10k_read_reg(struct fm10k_hw *hw, int reg);

		/* write operations, indexed using DWORDS */
		#define fm10k_write_reg(hw, reg, val) \
		do { \
		u32 __iomem *hw_addr = ACCESS_ONCE((hw)->hw_addr); \
		if (!FM10K_REMOVED(hw_addr)) \
		writel((val), &hw_addr[(reg)]); \
		} while (0)

		/* read ctrl register which has no clear on read fields as PCIe flush */
		#define fm10k_write_flush(hw) fm10k_read_reg((hw), FM10K_CTRL)
		#endif /* _FM10K_COMMON_H_ */

drivers/net/ethernet/intel/fm10k/fm10k_pci.c

+30 −0

Original line number	Diff line number	Diff line
		@@ -38,6 +38,36 @@ static const struct pci_device_id fm10k_pci_tbl[] = {
		};
		MODULE_DEVICE_TABLE(pci, fm10k_pci_tbl);

		u16 fm10k_read_pci_cfg_word(struct fm10k_hw *hw, u32 reg)
		{
		struct fm10k_intfc *interface = hw->back;
		u16 value = 0;

		if (FM10K_REMOVED(hw->hw_addr))
		return ~value;

		pci_read_config_word(interface->pdev, reg, &value);
		if (value == 0xFFFF)
		fm10k_write_flush(hw);

		return value;
		}

		u32 fm10k_read_reg(struct fm10k_hw *hw, int reg)
		{
		u32 __iomem *hw_addr = ACCESS_ONCE(hw->hw_addr);
		u32 value = 0;

		if (FM10K_REMOVED(hw_addr))
		return ~value;

		value = readl(&hw_addr[reg]);
		if (!(~value) && (!reg \|\| !(~readl(hw_addr))))
		hw->hw_addr = NULL;

		return value;
		}

		/**
		* fm10k_probe - Device Initialization Routine
		* @pdev: PCI device information struct

Admin message