110 lines
2.7 KiB
C
110 lines
2.7 KiB
C
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/*
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* Intel MIC Platform Software Stack (MPSS)
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*
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* Copyright(c) 2013 Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License, version 2, as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* The full GNU General Public License is included in this distribution in
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* the file called "COPYING".
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*
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* Intel MIC Host driver.
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*
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*/
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#ifndef _MIC_DEVICE_H_
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#define _MIC_DEVICE_H_
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/* The maximum number of MIC devices supported in a single host system. */
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#define MIC_MAX_NUM_DEVS 256
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/**
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* enum mic_hw_family - The hardware family to which a device belongs.
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*/
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enum mic_hw_family {
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MIC_FAMILY_X100 = 0,
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MIC_FAMILY_UNKNOWN
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};
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/**
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* enum mic_stepping - MIC stepping ids.
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*/
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enum mic_stepping {
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MIC_A0_STEP = 0x0,
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MIC_B0_STEP = 0x10,
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MIC_B1_STEP = 0x11,
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MIC_C0_STEP = 0x20,
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};
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/**
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* struct mic_device - MIC device information for each card.
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*
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* @mmio: MMIO bar information.
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* @aper: Aperture bar information.
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* @family: The MIC family to which this device belongs.
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* @ops: MIC HW specific operations.
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* @id: The unique device id for this MIC device.
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* @stepping: Stepping ID.
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* @attr_group: Pointer to list of sysfs attribute groups.
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* @sdev: Device for sysfs entries.
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*/
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struct mic_device {
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struct mic_mw mmio;
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struct mic_mw aper;
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enum mic_hw_family family;
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struct mic_hw_ops *ops;
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int id;
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enum mic_stepping stepping;
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const struct attribute_group **attr_group;
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struct device *sdev;
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};
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/**
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* struct mic_hw_ops - MIC HW specific operations.
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* @aper_bar: Aperture bar resource number.
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* @mmio_bar: MMIO bar resource number.
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* @read_spad: Read from scratch pad register.
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* @write_spad: Write to scratch pad register.
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*/
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struct mic_hw_ops {
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u8 aper_bar;
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u8 mmio_bar;
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u32 (*read_spad)(struct mic_device *mdev, unsigned int idx);
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void (*write_spad)(struct mic_device *mdev, unsigned int idx, u32 val);
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};
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/**
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* mic_mmio_read - read from an MMIO register.
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* @mw: MMIO register base virtual address.
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* @offset: register offset.
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*
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* RETURNS: register value.
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*/
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static inline u32 mic_mmio_read(struct mic_mw *mw, u32 offset)
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{
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return ioread32(mw->va + offset);
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}
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/**
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* mic_mmio_write - write to an MMIO register.
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* @mw: MMIO register base virtual address.
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* @val: the data value to put into the register
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* @offset: register offset.
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*
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* RETURNS: none.
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*/
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static inline void
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mic_mmio_write(struct mic_mw *mw, u32 val, u32 offset)
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{
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iowrite32(val, mw->va + offset);
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}
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void mic_sysfs_init(struct mic_device *mdev);
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#endif
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