mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-27 03:47:43 +00:00
a93a5244ed
This patch adds a dma device on the mic virtual bus Reviewed-by: Nikhil Rao <nikhil.rao@intel.com> Signed-off-by: Sudeep Dutt <sudeep.dutt@intel.com> Signed-off-by: Siva Yerramreddy <yshivakrishna@gmail.com> Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
140 lines
4.0 KiB
C
140 lines
4.0 KiB
C
/*
|
|
* 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".
|
|
*
|
|
* Disclaimer: The codes contained in these modules may be specific to
|
|
* the Intel Software Development Platform codenamed: Knights Ferry, and
|
|
* the Intel product codenamed: Knights Corner, and are not backward
|
|
* compatible with other Intel products. Additionally, Intel will NOT
|
|
* support the codes or instruction set in future products.
|
|
*
|
|
* Intel MIC Card driver.
|
|
*
|
|
*/
|
|
#ifndef _MIC_CARD_DEVICE_H_
|
|
#define _MIC_CARD_DEVICE_H_
|
|
|
|
#include <linux/workqueue.h>
|
|
#include <linux/io.h>
|
|
#include <linux/irqreturn.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/mic_bus.h>
|
|
|
|
/**
|
|
* struct mic_intr_info - Contains h/w specific interrupt sources info
|
|
*
|
|
* @num_intr: The number of irqs available
|
|
*/
|
|
struct mic_intr_info {
|
|
u32 num_intr;
|
|
};
|
|
|
|
/**
|
|
* struct mic_irq_info - OS specific irq information
|
|
*
|
|
* @irq_usage_count: usage count array tracking the number of sources
|
|
* assigned for each irq.
|
|
*/
|
|
struct mic_irq_info {
|
|
int *irq_usage_count;
|
|
};
|
|
|
|
/**
|
|
* struct mic_device - MIC device information.
|
|
*
|
|
* @mmio: MMIO bar information.
|
|
*/
|
|
struct mic_device {
|
|
struct mic_mw mmio;
|
|
};
|
|
|
|
/**
|
|
* struct mic_driver - MIC card driver information.
|
|
*
|
|
* @name: Name for MIC driver.
|
|
* @dbg_dir: debugfs directory of this MIC device.
|
|
* @dev: The device backing this MIC.
|
|
* @dp: The pointer to the virtio device page.
|
|
* @mdev: MIC device information for the host.
|
|
* @hotplug_work: Hot plug work for adding/removing virtio devices.
|
|
* @irq_info: The OS specific irq information
|
|
* @intr_info: H/W specific interrupt information.
|
|
* @dma_mbdev: dma device on the MIC virtual bus.
|
|
*/
|
|
struct mic_driver {
|
|
char name[20];
|
|
struct dentry *dbg_dir;
|
|
struct device *dev;
|
|
void __iomem *dp;
|
|
struct mic_device mdev;
|
|
struct work_struct hotplug_work;
|
|
struct mic_irq_info irq_info;
|
|
struct mic_intr_info intr_info;
|
|
struct mbus_device *dma_mbdev;
|
|
};
|
|
|
|
/**
|
|
* struct mic_irq - opaque pointer used as cookie
|
|
*/
|
|
struct mic_irq;
|
|
|
|
/**
|
|
* 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);
|
|
}
|
|
|
|
int mic_driver_init(struct mic_driver *mdrv);
|
|
void mic_driver_uninit(struct mic_driver *mdrv);
|
|
int mic_next_card_db(void);
|
|
struct mic_irq *
|
|
mic_request_card_irq(irq_handler_t handler, irq_handler_t thread_fn,
|
|
const char *name, void *data, int intr_src);
|
|
void mic_free_card_irq(struct mic_irq *cookie, void *data);
|
|
u32 mic_read_spad(struct mic_device *mdev, unsigned int idx);
|
|
void mic_send_intr(struct mic_device *mdev, int doorbell);
|
|
int mic_db_to_irq(struct mic_driver *mdrv, int db);
|
|
u32 mic_ack_interrupt(struct mic_device *mdev);
|
|
void mic_hw_intr_init(struct mic_driver *mdrv);
|
|
void __iomem *
|
|
mic_card_map(struct mic_device *mdev, dma_addr_t addr, size_t size);
|
|
void mic_card_unmap(struct mic_device *mdev, void __iomem *addr);
|
|
void __init mic_create_card_debug_dir(struct mic_driver *mdrv);
|
|
void mic_delete_card_debug_dir(struct mic_driver *mdrv);
|
|
void __init mic_init_card_debugfs(void);
|
|
void mic_exit_card_debugfs(void);
|
|
#endif
|