forked from Minki/linux
c74c9318a3
This patch modifies the MIC host and card drivers to start using the VOP driver. The MIC host and card drivers now implement the VOP bus operations and register a VOP device on the VOP bus. MIC driver stack documentation is also updated to include the new VOP driver. Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com> Signed-off-by: Sudeep Dutt <sudeep.dutt@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
170 lines
5.2 KiB
C
170 lines
5.2 KiB
C
/*
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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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#include <linux/cdev.h>
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#include <linux/idr.h>
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#include <linux/notifier.h>
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#include <linux/irqreturn.h>
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#include <linux/dmaengine.h>
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#include <linux/miscdevice.h>
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#include <linux/mic_bus.h>
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#include "../bus/scif_bus.h"
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#include "../bus/vop_bus.h"
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#include "../bus/cosm_bus.h"
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#include "mic_intr.h"
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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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extern struct cosm_hw_ops cosm_hw_ops;
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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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* @pdev: Underlying PCI device.
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* @mic_mutex: Mutex for synchronizing access to mic_device.
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* @intr_ops: HW specific interrupt operations.
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* @smpt_ops: Hardware specific SMPT operations.
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* @smpt: MIC SMPT information.
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* @intr_info: H/W specific interrupt information.
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* @irq_info: The OS specific irq information
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* @dbg_dir: debugfs directory of this MIC device.
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* @bootaddr: MIC boot address.
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* @dp: virtio device page
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* @dp_dma_addr: virtio device page DMA address.
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* @dma_mbdev: MIC BUS DMA device.
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* @dma_ch - Array of DMA channels
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* @num_dma_ch - Number of DMA channels available
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* @scdev: SCIF device on the SCIF virtual bus.
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* @vpdev: Virtio over PCIe device on the VOP virtual bus.
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* @cosm_dev: COSM device
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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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struct pci_dev *pdev;
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struct mutex mic_mutex;
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struct mic_hw_intr_ops *intr_ops;
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struct mic_smpt_ops *smpt_ops;
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struct mic_smpt_info *smpt;
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struct mic_intr_info *intr_info;
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struct mic_irq_info irq_info;
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struct dentry *dbg_dir;
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u32 bootaddr;
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void *dp;
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dma_addr_t dp_dma_addr;
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struct mbus_device *dma_mbdev;
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struct dma_chan *dma_ch[MIC_MAX_DMA_CHAN];
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int num_dma_ch;
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struct scif_hw_dev *scdev;
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struct vop_device *vpdev;
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struct cosm_device *cosm_dev;
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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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* @send_intr: Send an interrupt for a particular doorbell on the card.
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* @ack_interrupt: Hardware specific operations to ack the h/w on
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* receipt of an interrupt.
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* @intr_workarounds: Hardware specific workarounds needed after
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* handling an interrupt.
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* @reset: Reset the remote processor.
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* @reset_fw_ready: Reset firmware ready field.
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* @is_fw_ready: Check if firmware is ready for OS download.
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* @send_firmware_intr: Send an interrupt to the card firmware.
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* @load_mic_fw: Load firmware segments required to boot the card
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* into card memory. This includes the kernel, command line, ramdisk etc.
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* @get_postcode: Get post code status from firmware.
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* @dma_filter: DMA filter function to be used.
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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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void (*send_intr)(struct mic_device *mdev, int doorbell);
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u32 (*ack_interrupt)(struct mic_device *mdev);
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void (*intr_workarounds)(struct mic_device *mdev);
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void (*reset)(struct mic_device *mdev);
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void (*reset_fw_ready)(struct mic_device *mdev);
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bool (*is_fw_ready)(struct mic_device *mdev);
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void (*send_firmware_intr)(struct mic_device *mdev);
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int (*load_mic_fw)(struct mic_device *mdev, const char *buf);
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u32 (*get_postcode)(struct mic_device *mdev);
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bool (*dma_filter)(struct dma_chan *chan, void *param);
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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_bootparam_init(struct mic_device *mdev);
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void mic_create_debug_dir(struct mic_device *dev);
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void mic_delete_debug_dir(struct mic_device *dev);
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void __init mic_init_debugfs(void);
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void mic_exit_debugfs(void);
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#endif
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