Intel MIC Host Driver for X100 family.
This patch enables the following: a) Initializes the Intel MIC X100 PCIe devices. b) Provides sysfs entries for family and stepping information. Co-author: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com> Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com> Signed-off-by: Caz Yokoyama <Caz.Yokoyama@intel.com> Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com> Signed-off-by: Harshavardhan R Kharche <harshavardhan.r.kharche@intel.com> Signed-off-by: Nikhil Rao <nikhil.rao@intel.com> Signed-off-by: Sudeep Dutt <sudeep.dutt@intel.com> Acked-by: Yaozu (Eddie) Dong <eddie.dong@intel.com> Reviewed-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>hifive-unleashed-5.1
Sudeep Dutt
Greg Kroah-Hartman
parent
9089e3be60
commit
b170d8ce3f
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@ -0,0 +1,34 @@
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What: /sys/class/mic/
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Date: August 2013
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KernelVersion: 3.11
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Contact: Sudeep Dutt <sudeep.dutt@intel.com>
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Description:
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The mic class directory belongs to Intel MIC devices and
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provides information per MIC device. An Intel MIC device is a
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PCIe form factor add-in Coprocessor card based on the Intel Many
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Integrated Core (MIC) architecture that runs a Linux OS.
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What: /sys/class/mic/mic(x)
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Date: August 2013
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KernelVersion: 3.11
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Contact: Sudeep Dutt <sudeep.dutt@intel.com>
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Description:
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The directories /sys/class/mic/mic0, /sys/class/mic/mic1 etc.,
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represent MIC devices (0,1,..etc). Each directory has
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information specific to that MIC device.
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What: /sys/class/mic/mic(x)/family
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Date: August 2013
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KernelVersion: 3.11
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Contact: Sudeep Dutt <sudeep.dutt@intel.com>
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Description:
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Provides information about the Coprocessor family for an Intel
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MIC device. For example - "x100"
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What: /sys/class/mic/mic(x)/stepping
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Date: August 2013
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KernelVersion: 3.11
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Contact: Sudeep Dutt <sudeep.dutt@intel.com>
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Description:
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Provides information about the silicon stepping for an Intel
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MIC device. For example - "A0" or "B0"
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@ -537,4 +537,5 @@ source "drivers/misc/carma/Kconfig"
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source "drivers/misc/altera-stapl/Kconfig"
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source "drivers/misc/mei/Kconfig"
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source "drivers/misc/vmw_vmci/Kconfig"
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source "drivers/misc/mic/Kconfig"
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endmenu
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@ -53,3 +53,4 @@ obj-$(CONFIG_INTEL_MEI) += mei/
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obj-$(CONFIG_VMWARE_VMCI) += vmw_vmci/
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obj-$(CONFIG_LATTICE_ECP3_CONFIG) += lattice-ecp3-config.o
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obj-$(CONFIG_SRAM) += sram.o
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obj-y += mic/
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@ -0,0 +1,19 @@
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comment "Intel MIC Host Driver"
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config INTEL_MIC_HOST
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tristate "Intel MIC Host Driver"
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depends on 64BIT && PCI
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default N
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help
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This enables Host Driver support for the Intel Many Integrated
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Core (MIC) family of PCIe form factor coprocessor devices that
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run a 64 bit Linux OS. The driver manages card OS state and
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enables communication between host and card. Intel MIC X100
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devices are currently supported.
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If you are building a host kernel with an Intel MIC device then
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say M (recommended) or Y, else say N. If unsure say N.
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More information about the Intel MIC family as well as the Linux
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OS and tools for MIC to use with this driver are available from
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<http://software.intel.com/en-us/mic-developer>.
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@ -0,0 +1,5 @@
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#
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# Makefile - Intel MIC Linux driver.
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# Copyright(c) 2013, Intel Corporation.
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#
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obj-$(CONFIG_INTEL_MIC_HOST) += host/
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@ -0,0 +1,37 @@
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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 driver.
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*
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*/
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#ifndef __MIC_COMMON_DEVICE_H_
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#define __MIC_COMMON_DEVICE_H_
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/**
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* struct mic_mw - MIC memory window
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*
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* @pa: Base physical address.
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* @va: Base ioremap'd virtual address.
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* @len: Size of the memory window.
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*/
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struct mic_mw {
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phys_addr_t pa;
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void __iomem *va;
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resource_size_t len;
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};
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#endif
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@ -0,0 +1,8 @@
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#
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# Makefile - Intel MIC Linux driver.
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# Copyright(c) 2013, Intel Corporation.
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#
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obj-$(CONFIG_INTEL_MIC_HOST) += mic_host.o
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mic_host-objs := mic_main.o
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mic_host-objs += mic_x100.o
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mic_host-objs += mic_sysfs.o
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@ -0,0 +1,109 @@
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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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@ -0,0 +1,309 @@
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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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* Global TODO's across the driver to be added after initial base
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* patches are accepted upstream:
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* 1) Enable DMA support.
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* 2) Enable per vring interrupt support.
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*/
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#include <linux/fs.h>
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#include <linux/idr.h>
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#include <linux/module.h>
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#include <linux/pci.h>
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#include "../common/mic_device.h"
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#include "mic_device.h"
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#include "mic_x100.h"
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static const char mic_driver_name[] = "mic";
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static DEFINE_PCI_DEVICE_TABLE(mic_pci_tbl) = {
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{PCI_DEVICE(PCI_VENDOR_ID_INTEL, MIC_X100_PCI_DEVICE_2250)},
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{PCI_DEVICE(PCI_VENDOR_ID_INTEL, MIC_X100_PCI_DEVICE_2251)},
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{PCI_DEVICE(PCI_VENDOR_ID_INTEL, MIC_X100_PCI_DEVICE_2252)},
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{PCI_DEVICE(PCI_VENDOR_ID_INTEL, MIC_X100_PCI_DEVICE_2253)},
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{PCI_DEVICE(PCI_VENDOR_ID_INTEL, MIC_X100_PCI_DEVICE_2254)},
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{PCI_DEVICE(PCI_VENDOR_ID_INTEL, MIC_X100_PCI_DEVICE_2255)},
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{PCI_DEVICE(PCI_VENDOR_ID_INTEL, MIC_X100_PCI_DEVICE_2256)},
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{PCI_DEVICE(PCI_VENDOR_ID_INTEL, MIC_X100_PCI_DEVICE_2257)},
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{PCI_DEVICE(PCI_VENDOR_ID_INTEL, MIC_X100_PCI_DEVICE_2258)},
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{PCI_DEVICE(PCI_VENDOR_ID_INTEL, MIC_X100_PCI_DEVICE_2259)},
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{PCI_DEVICE(PCI_VENDOR_ID_INTEL, MIC_X100_PCI_DEVICE_225a)},
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{PCI_DEVICE(PCI_VENDOR_ID_INTEL, MIC_X100_PCI_DEVICE_225b)},
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{PCI_DEVICE(PCI_VENDOR_ID_INTEL, MIC_X100_PCI_DEVICE_225c)},
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{PCI_DEVICE(PCI_VENDOR_ID_INTEL, MIC_X100_PCI_DEVICE_225d)},
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{PCI_DEVICE(PCI_VENDOR_ID_INTEL, MIC_X100_PCI_DEVICE_225e)},
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/* required last entry */
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{ 0, }
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};
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MODULE_DEVICE_TABLE(pci, mic_pci_tbl);
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/* ID allocator for MIC devices */
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static struct ida g_mic_ida;
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/* Class of MIC devices for sysfs accessibility. */
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static struct class *g_mic_class;
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/* Base device node number for MIC devices */
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static dev_t g_mic_devno;
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/**
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* mic_ops_init: Initialize HW specific operation tables.
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*
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* @mdev: pointer to mic_device instance
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*
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* returns none.
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*/
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static void mic_ops_init(struct mic_device *mdev)
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{
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switch (mdev->family) {
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case MIC_FAMILY_X100:
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mdev->ops = &mic_x100_ops;
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break;
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default:
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break;
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}
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}
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/**
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* mic_get_family - Determine hardware family to which this MIC belongs.
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*
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* @pdev: The pci device structure
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*
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* returns family.
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*/
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static enum mic_hw_family mic_get_family(struct pci_dev *pdev)
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{
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enum mic_hw_family family;
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switch (pdev->device) {
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case MIC_X100_PCI_DEVICE_2250:
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case MIC_X100_PCI_DEVICE_2251:
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case MIC_X100_PCI_DEVICE_2252:
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case MIC_X100_PCI_DEVICE_2253:
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case MIC_X100_PCI_DEVICE_2254:
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case MIC_X100_PCI_DEVICE_2255:
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case MIC_X100_PCI_DEVICE_2256:
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case MIC_X100_PCI_DEVICE_2257:
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case MIC_X100_PCI_DEVICE_2258:
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case MIC_X100_PCI_DEVICE_2259:
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case MIC_X100_PCI_DEVICE_225a:
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case MIC_X100_PCI_DEVICE_225b:
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case MIC_X100_PCI_DEVICE_225c:
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case MIC_X100_PCI_DEVICE_225d:
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case MIC_X100_PCI_DEVICE_225e:
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family = MIC_FAMILY_X100;
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break;
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default:
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family = MIC_FAMILY_UNKNOWN;
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break;
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}
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return family;
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}
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/**
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* mic_device_init - Allocates and initializes the MIC device structure
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*
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* @mdev: pointer to mic_device instance
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* @pdev: The pci device structure
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*
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* returns none.
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*/
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static void
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mic_device_init(struct mic_device *mdev, struct pci_dev *pdev)
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{
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mdev->family = mic_get_family(pdev);
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mdev->stepping = pdev->revision;
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mic_ops_init(mdev);
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mic_sysfs_init(mdev);
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}
|
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|
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/**
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* mic_probe - Device Initialization Routine
|
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*
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* @pdev: PCI device structure
|
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* @ent: entry in mic_pci_tbl
|
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*
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* returns 0 on success, < 0 on failure.
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*/
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static int mic_probe(struct pci_dev *pdev,
|
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const struct pci_device_id *ent)
|
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{
|
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int rc;
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struct mic_device *mdev;
|
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|
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mdev = kzalloc(sizeof(*mdev), GFP_KERNEL);
|
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if (!mdev) {
|
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rc = -ENOMEM;
|
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dev_err(&pdev->dev, "mdev kmalloc failed rc %d\n", rc);
|
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goto mdev_alloc_fail;
|
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}
|
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mdev->id = ida_simple_get(&g_mic_ida, 0, MIC_MAX_NUM_DEVS, GFP_KERNEL);
|
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if (mdev->id < 0) {
|
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rc = mdev->id;
|
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dev_err(&pdev->dev, "ida_simple_get failed rc %d\n", rc);
|
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goto ida_fail;
|
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}
|
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|
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mic_device_init(mdev, pdev);
|
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|
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rc = pci_enable_device(pdev);
|
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if (rc) {
|
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dev_err(&pdev->dev, "failed to enable pci device.\n");
|
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goto ida_remove;
|
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}
|
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|
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pci_set_master(pdev);
|
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|
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rc = pci_request_regions(pdev, mic_driver_name);
|
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if (rc) {
|
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dev_err(&pdev->dev, "failed to get pci regions.\n");
|
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goto disable_device;
|
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}
|
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|
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rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
|
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if (rc) {
|
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dev_err(&pdev->dev, "Cannot set DMA mask\n");
|
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goto release_regions;
|
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}
|
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|
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mdev->mmio.pa = pci_resource_start(pdev, mdev->ops->mmio_bar);
|
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mdev->mmio.len = pci_resource_len(pdev, mdev->ops->mmio_bar);
|
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mdev->mmio.va = pci_ioremap_bar(pdev, mdev->ops->mmio_bar);
|
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if (!mdev->mmio.va) {
|
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dev_err(&pdev->dev, "Cannot remap MMIO BAR\n");
|
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rc = -EIO;
|
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goto release_regions;
|
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}
|
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|
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mdev->aper.pa = pci_resource_start(pdev, mdev->ops->aper_bar);
|
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mdev->aper.len = pci_resource_len(pdev, mdev->ops->aper_bar);
|
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mdev->aper.va = ioremap_wc(mdev->aper.pa, mdev->aper.len);
|
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if (!mdev->aper.va) {
|
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dev_err(&pdev->dev, "Cannot remap Aperture BAR\n");
|
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rc = -EIO;
|
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goto unmap_mmio;
|
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}
|
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|
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pci_set_drvdata(pdev, mdev);
|
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|
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mdev->sdev = device_create_with_groups(g_mic_class, &pdev->dev,
|
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MKDEV(MAJOR(g_mic_devno), mdev->id), NULL,
|
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mdev->attr_group, "mic%d", mdev->id);
|
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if (IS_ERR(mdev->sdev)) {
|
||||
rc = PTR_ERR(mdev->sdev);
|
||||
dev_err(&pdev->dev,
|
||||
"device_create_with_groups failed rc %d\n", rc);
|
||||
goto unmap_aper;
|
||||
}
|
||||
return 0;
|
||||
unmap_aper:
|
||||
iounmap(mdev->aper.va);
|
||||
unmap_mmio:
|
||||
iounmap(mdev->mmio.va);
|
||||
release_regions:
|
||||
pci_release_regions(pdev);
|
||||
disable_device:
|
||||
pci_disable_device(pdev);
|
||||
ida_remove:
|
||||
ida_simple_remove(&g_mic_ida, mdev->id);
|
||||
ida_fail:
|
||||
kfree(mdev);
|
||||
mdev_alloc_fail:
|
||||
dev_err(&pdev->dev, "Probe failed rc %d\n", rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
/**
|
||||
* mic_remove - Device Removal Routine
|
||||
* mic_remove is called by the PCI subsystem to alert the driver
|
||||
* that it should release a PCI device.
|
||||
*
|
||||
* @pdev: PCI device structure
|
||||
*/
|
||||
static void mic_remove(struct pci_dev *pdev)
|
||||
{
|
||||
struct mic_device *mdev;
|
||||
|
||||
mdev = pci_get_drvdata(pdev);
|
||||
if (!mdev)
|
||||
return;
|
||||
|
||||
device_destroy(g_mic_class, MKDEV(MAJOR(g_mic_devno), mdev->id));
|
||||
iounmap(mdev->mmio.va);
|
||||
iounmap(mdev->aper.va);
|
||||
pci_release_regions(pdev);
|
||||
pci_disable_device(pdev);
|
||||
ida_simple_remove(&g_mic_ida, mdev->id);
|
||||
kfree(mdev);
|
||||
}
|
||||
static struct pci_driver mic_driver = {
|
||||
.name = mic_driver_name,
|
||||
.id_table = mic_pci_tbl,
|
||||
.probe = mic_probe,
|
||||
.remove = mic_remove
|
||||
};
|
||||
|
||||
static int __init mic_init(void)
|
||||
{
|
||||
int ret;
|
||||
|
||||
ret = alloc_chrdev_region(&g_mic_devno, 0,
|
||||
MIC_MAX_NUM_DEVS, mic_driver_name);
|
||||
if (ret) {
|
||||
pr_err("alloc_chrdev_region failed ret %d\n", ret);
|
||||
goto error;
|
||||
}
|
||||
|
||||
g_mic_class = class_create(THIS_MODULE, mic_driver_name);
|
||||
if (IS_ERR(g_mic_class)) {
|
||||
ret = PTR_ERR(g_mic_class);
|
||||
pr_err("class_create failed ret %d\n", ret);
|
||||
goto cleanup_chrdev;
|
||||
}
|
||||
|
||||
ida_init(&g_mic_ida);
|
||||
ret = pci_register_driver(&mic_driver);
|
||||
if (ret) {
|
||||
pr_err("pci_register_driver failed ret %d\n", ret);
|
||||
goto class_destroy;
|
||||
}
|
||||
return ret;
|
||||
class_destroy:
|
||||
class_destroy(g_mic_class);
|
||||
cleanup_chrdev:
|
||||
unregister_chrdev_region(g_mic_devno, MIC_MAX_NUM_DEVS);
|
||||
error:
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void __exit mic_exit(void)
|
||||
{
|
||||
pci_unregister_driver(&mic_driver);
|
||||
ida_destroy(&g_mic_ida);
|
||||
class_destroy(g_mic_class);
|
||||
unregister_chrdev_region(g_mic_devno, MIC_MAX_NUM_DEVS);
|
||||
}
|
||||
|
||||
module_init(mic_init);
|
||||
module_exit(mic_exit);
|
||||
|
||||
MODULE_AUTHOR("Intel Corporation");
|
||||
MODULE_DESCRIPTION("Intel(R) MIC X100 Host driver");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
|
|
@ -0,0 +1,97 @@
|
|||
/*
|
||||
* 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.
|
||||
*
|
||||
*/
|
||||
#include <linux/pci.h>
|
||||
|
||||
#include "../common/mic_device.h"
|
||||
#include "mic_device.h"
|
||||
|
||||
static ssize_t
|
||||
mic_show_family(struct device *dev, struct device_attribute *attr, char *buf)
|
||||
{
|
||||
static const char x100[] = "x100";
|
||||
static const char unknown[] = "Unknown";
|
||||
const char *card = NULL;
|
||||
struct mic_device *mdev = dev_get_drvdata(dev->parent);
|
||||
|
||||
if (!mdev)
|
||||
return -EINVAL;
|
||||
|
||||
switch (mdev->family) {
|
||||
case MIC_FAMILY_X100:
|
||||
card = x100;
|
||||
break;
|
||||
default:
|
||||
card = unknown;
|
||||
break;
|
||||
}
|
||||
return scnprintf(buf, PAGE_SIZE, "%s\n", card);
|
||||
}
|
||||
static DEVICE_ATTR(family, S_IRUGO, mic_show_family, NULL);
|
||||
|
||||
static ssize_t
|
||||
mic_show_stepping(struct device *dev, struct device_attribute *attr, char *buf)
|
||||
{
|
||||
struct mic_device *mdev = dev_get_drvdata(dev->parent);
|
||||
char *string = "??";
|
||||
|
||||
if (!mdev)
|
||||
return -EINVAL;
|
||||
|
||||
switch (mdev->stepping) {
|
||||
case MIC_A0_STEP:
|
||||
string = "A0";
|
||||
break;
|
||||
case MIC_B0_STEP:
|
||||
string = "B0";
|
||||
break;
|
||||
case MIC_B1_STEP:
|
||||
string = "B1";
|
||||
break;
|
||||
case MIC_C0_STEP:
|
||||
string = "C0";
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
return scnprintf(buf, PAGE_SIZE, "%s\n", string);
|
||||
}
|
||||
static DEVICE_ATTR(stepping, S_IRUGO, mic_show_stepping, NULL);
|
||||
|
||||
static struct attribute *mic_default_attrs[] = {
|
||||
&dev_attr_family.attr,
|
||||
&dev_attr_stepping.attr,
|
||||
|
||||
NULL
|
||||
};
|
||||
|
||||
static struct attribute_group mic_attr_group = {
|
||||
.attrs = mic_default_attrs,
|
||||
};
|
||||
|
||||
static const struct attribute_group *__mic_attr_group[] = {
|
||||
&mic_attr_group,
|
||||
NULL
|
||||
};
|
||||
|
||||
void mic_sysfs_init(struct mic_device *mdev)
|
||||
{
|
||||
mdev->attr_group = __mic_attr_group;
|
||||
}
|
||||
|
|
@ -0,0 +1,75 @@
|
|||
/*
|
||||
* 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.
|
||||
*
|
||||
*/
|
||||
#include <linux/fs.h>
|
||||
#include <linux/pci.h>
|
||||
|
||||
#include "../common/mic_device.h"
|
||||
#include "mic_device.h"
|
||||
#include "mic_x100.h"
|
||||
|
||||
/**
|
||||
* mic_x100_write_spad - write to the scratchpad register
|
||||
* @mdev: pointer to mic_device instance
|
||||
* @idx: index to the scratchpad register, 0 based
|
||||
* @val: the data value to put into the register
|
||||
*
|
||||
* This function allows writing of a 32bit value to the indexed scratchpad
|
||||
* register.
|
||||
*
|
||||
* RETURNS: none.
|
||||
*/
|
||||
static void
|
||||
mic_x100_write_spad(struct mic_device *mdev, unsigned int idx, u32 val)
|
||||
{
|
||||
dev_dbg(mdev->sdev->parent, "Writing 0x%x to scratch pad index %d\n",
|
||||
val, idx);
|
||||
mic_mmio_write(&mdev->mmio, val,
|
||||
MIC_X100_SBOX_BASE_ADDRESS +
|
||||
MIC_X100_SBOX_SPAD0 + idx * 4);
|
||||
}
|
||||
|
||||
/**
|
||||
* mic_x100_read_spad - read from the scratchpad register
|
||||
* @mdev: pointer to mic_device instance
|
||||
* @idx: index to scratchpad register, 0 based
|
||||
*
|
||||
* This function allows reading of the 32bit scratchpad register.
|
||||
*
|
||||
* RETURNS: An appropriate -ERRNO error value on error, or zero for success.
|
||||
*/
|
||||
static u32
|
||||
mic_x100_read_spad(struct mic_device *mdev, unsigned int idx)
|
||||
{
|
||||
u32 val = mic_mmio_read(&mdev->mmio,
|
||||
MIC_X100_SBOX_BASE_ADDRESS +
|
||||
MIC_X100_SBOX_SPAD0 + idx * 4);
|
||||
|
||||
dev_dbg(mdev->sdev->parent,
|
||||
"Reading 0x%x from scratch pad index %d\n", val, idx);
|
||||
return val;
|
||||
}
|
||||
|
||||
struct mic_hw_ops mic_x100_ops = {
|
||||
.aper_bar = MIC_X100_APER_BAR,
|
||||
.mmio_bar = MIC_X100_MMIO_BAR,
|
||||
.read_spad = mic_x100_read_spad,
|
||||
.write_spad = mic_x100_write_spad,
|
||||
};
|
||||
|
|
@ -0,0 +1,47 @@
|
|||
/*
|
||||
* 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_X100_HW_H_
|
||||
#define _MIC_X100_HW_H_
|
||||
|
||||
#define MIC_X100_PCI_DEVICE_2250 0x2250
|
||||
#define MIC_X100_PCI_DEVICE_2251 0x2251
|
||||
#define MIC_X100_PCI_DEVICE_2252 0x2252
|
||||
#define MIC_X100_PCI_DEVICE_2253 0x2253
|
||||
#define MIC_X100_PCI_DEVICE_2254 0x2254
|
||||
#define MIC_X100_PCI_DEVICE_2255 0x2255
|
||||
#define MIC_X100_PCI_DEVICE_2256 0x2256
|
||||
#define MIC_X100_PCI_DEVICE_2257 0x2257
|
||||
#define MIC_X100_PCI_DEVICE_2258 0x2258
|
||||
#define MIC_X100_PCI_DEVICE_2259 0x2259
|
||||
#define MIC_X100_PCI_DEVICE_225a 0x225a
|
||||
#define MIC_X100_PCI_DEVICE_225b 0x225b
|
||||
#define MIC_X100_PCI_DEVICE_225c 0x225c
|
||||
#define MIC_X100_PCI_DEVICE_225d 0x225d
|
||||
#define MIC_X100_PCI_DEVICE_225e 0x225e
|
||||
|
||||
#define MIC_X100_APER_BAR 0
|
||||
#define MIC_X100_MMIO_BAR 4
|
||||
|
||||
#define MIC_X100_SBOX_BASE_ADDRESS 0x00010000
|
||||
#define MIC_X100_SBOX_SPAD0 0x0000AB20
|
||||
extern struct mic_hw_ops mic_x100_ops;
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue