151 lines
4.3 KiB
C
151 lines
4.3 KiB
C
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/*
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* COPYRIGHT (c) 2007 by Lattice Semiconductor Corporation
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*
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* All rights reserved. All use of this software and documentation is
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* subject to the License Agreement located in the file LICENSE.
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*/
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/**
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* @file
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*
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* Define Data structures and ioctl commands to pass between the driver
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* and the user space. The definitions serve as the interface between
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* the kernel and user.
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*
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* NOTE: This file is included in source code built for the kernel and user.
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* It must be kept compatible with both environments.
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* In particular, structure definitions can not be changed in one space without
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* recompiling the code in the other space.
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*/
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#ifndef LATTICE_SEMI_PCIE_LSC_IOCTL_H
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#define LATTICE_SEMI_PCIE_LSC_IOCTL_H
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#include <asm/ioctl.h>
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#include "sysDefs.h"
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#include <stdbool.h>
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#ifndef MAX_PCI_BARS
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#define MAX_PCI_BARS 7 // do not count/use the expansion ROM
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#endif
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#define MAX_DRIVER_NAME_LEN 128
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#define MAX_DRIVER_VERSION_LEN 128
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typedef char DriverVerStr_t[MAX_DRIVER_NAME_LEN];
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/**
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* Information about a device's BAR.
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*/
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typedef struct
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{
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ULONG nBAR;
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ULONG physStartAddr;
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ULONG size;
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bool memMapped;
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USHORT flags;
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UCHAR type;
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} PCI_BAR_t;
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/**
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* Device Drvier specific information to return to user space.
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* This includes the BAR resources allocated to the device,
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* interrupts, etc.
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* NOTE: to keep backwards compatibility with older applications
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* that were built against v1.0.0.x drivers, do no add any new
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* fields to this structure or the driver will crash during
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* copying info back to user pages because the size will be different
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* and a fault will occur. Add new fields to the extra info struct.
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*/
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typedef struct
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{
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// Device Memory Access info
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ULONG numBARs;
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PCI_BAR_t BAR[MAX_PCI_BARS];
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UCHAR PCICfgReg[256];
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// Device Interrupt Info
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bool hasInterrupt;
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ULONG intrVector;
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} PCIResourceInfo_t;
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/**
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* Additional Device Driver specific information to return to user space.
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* This includes the DMA resources allocated to the device, interrupts, etc.
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* This is for the newer PCIeBasic and PCIeSFIF demos and applications.
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*/
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typedef struct
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{
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// Instance and device location info
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ULONG devID; /**< board number of specific device */
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ULONG busNum; /**< PCI bus number board located on */
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USHORT deviceNum; /**< PCI device number assigned to board */
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USHORT functionNum; /**< our function number, which is always 0 (no multi-function */
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ULONG UINumber; /**< motherboard slot number (not always implemented/valid) */
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// Device DMA Common buffer memory info
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bool hasDmaBuf; /**< true if DMA buffer has been allocated by driver */
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ULONG DmaBufSize; /**< size in bytes of said buffer */
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bool DmaAddr64; /**< true if the address mode is 64 bit (almost always 32 bit) */
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ULONG DmaPhyAddrHi; /**< Upper 32 bits of 64 bit address for 64 bit mode */
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ULONG DmaPhyAddrLo; /**< DMA bus address to be programmed into device */
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char DriverName[MAX_DRIVER_NAME_LEN]; /**< version and name compiled into driver */
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} ExtraResourceInfo_t;
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/**
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* IOCTL Operations.
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* use these defines when performing an ioctl operation to a device.
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*/
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#define LSCPCIE_MAGIC 'L'
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/** This IO_CTL is used to get PCI driver name and version
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* back to user space applications.
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*/
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#define IOCTL_LSCPCIE_GET_VERSION_INFO _IOR(LSCPCIE_MAGIC, 0, DriverVerStr_t)
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/** This IO_CTL is used to get PCI and driver information from the
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* driver back to user space applications.
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*/
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#define IOCTL_LSCPCIE_GET_RESOURCES _IOR(LSCPCIE_MAGIC, 1, PCIResourceInfo_t)
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/**
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* This IO_CTL is used to set the BAR number that is mapped in with the MMAP command.
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*/
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#define IOCTL_LSCPCIE_SET_BAR _IOW(LSCPCIE_MAGIC, 2, int)
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/** This IO_CTL is used to get additional information from the
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* driver back to user space applications. This info is used by the SFIF.
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*/
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#define IOCTL_LSCPCIE2_GET_EXTRA_INFO _IOR(LSCPCIE_MAGIC, 3, ExtraResourceInfo_t)
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/**
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* Controls to support future user space handling of interrupts.
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* Not implemented yet.
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*/
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#define IOCTL_LSCPCIE2_WAIT_FOR_INTERRUPT _IO(LSCPCIE_MAGIC, 4)
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#define IOCTL_LSCPCIE2_DISABLE_INTERRUPT _IO(LSCPCIE_MAGIC, 5)
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#define IOCTL_LSCPCIE_MAX_NR 5 // ^^^^^^must match last entry above^^^^^^^
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#endif
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