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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>
169 lines
5.2 KiB
C
169 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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