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/*
* Intel MIC Platform Software Stack (MPSS)
*
* Copyright(c) 2013 Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, version 2, as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that 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".
*
* Intel MIC Host driver.
*
*/
#ifndef _MIC_DEVICE_H_
#define _MIC_DEVICE_H_
#include <linux/idr.h>
#include "mic_intr.h"
/* The maximum number of MIC devices supported in a single host system. */
#define MIC_MAX_NUM_DEVS 256
/**
* enum mic_hw_family - The hardware family to which a device belongs.
*/
enum mic_hw_family {
MIC_FAMILY_X100 = 0,
MIC_FAMILY_UNKNOWN
};
/**
* enum mic_stepping - MIC stepping ids.
*/
enum mic_stepping {
MIC_A0_STEP = 0x0,
MIC_B0_STEP = 0x10,
MIC_B1_STEP = 0x11,
MIC_C0_STEP = 0x20,
};
/**
* struct mic_device - MIC device information for each card.
*
* @mmio: MMIO bar information.
* @aper: Aperture bar information.
* @family: The MIC family to which this device belongs.
* @ops: MIC HW specific operations.
* @id: The unique device id for this MIC device.
* @stepping: Stepping ID.
* @attr_group: Pointer to list of sysfs attribute groups.
* @sdev: Device for sysfs entries.
* @mic_mutex: Mutex for synchronizing access to mic_device.
* @intr_ops: HW specific interrupt operations.
* @smpt_ops: Hardware specific SMPT operations.
* @smpt: MIC SMPT information.
* @intr_info: H/W specific interrupt information.
* @irq_info: The OS specific irq information
*/
struct mic_device {
struct mic_mw mmio;
struct mic_mw aper;
enum mic_hw_family family;
struct mic_hw_ops *ops;
int id;
enum mic_stepping stepping;
const struct attribute_group **attr_group;
struct device *sdev;
struct mutex mic_mutex;
struct mic_hw_intr_ops *intr_ops;
struct mic_smpt_ops *smpt_ops;
struct mic_smpt_info *smpt;
struct mic_intr_info *intr_info;
struct mic_irq_info irq_info;
};
/**
* struct mic_hw_ops - MIC HW specific operations.
* @aper_bar: Aperture bar resource number.
* @mmio_bar: MMIO bar resource number.
* @read_spad: Read from scratch pad register.
* @write_spad: Write to scratch pad register.
* @send_intr: Send an interrupt for a particular doorbell on the card.
* @ack_interrupt: Hardware specific operations to ack the h/w on
* receipt of an interrupt.
*/
struct mic_hw_ops {
u8 aper_bar;
u8 mmio_bar;
u32 (*read_spad)(struct mic_device *mdev, unsigned int idx);
void (*write_spad)(struct mic_device *mdev, unsigned int idx, u32 val);
void (*send_intr)(struct mic_device *mdev, int doorbell);
u32 (*ack_interrupt)(struct mic_device *mdev);
};
/**
* mic_mmio_read - read from an MMIO register.
* @mw: MMIO register base virtual address.
* @offset: register offset.
*
* RETURNS: register value.
*/
static inline u32 mic_mmio_read(struct mic_mw *mw, u32 offset)
{
return ioread32(mw->va + offset);
}
/**
* mic_mmio_write - write to an MMIO register.
* @mw: MMIO register base virtual address.
* @val: the data value to put into the register
* @offset: register offset.
*
* RETURNS: none.
*/
static inline void
mic_mmio_write(struct mic_mw *mw, u32 val, u32 offset)
{
iowrite32(val, mw->va + offset);
}
void mic_sysfs_init(struct mic_device *mdev);
#endif
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