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Viewing changes to driver/ioctl.c

  • Committer: Suren A. Chilingaryan
  • Date: 2015-11-19 01:21:30 UTC
  • Revision ID: csa@suren.me-20151119012130-e7qfp7563fqxqhiy
Driver versioning

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driver/ioctl.c
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#include <linux/interrupt.h>
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#include <linux/wait.h>
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#include <linux/sched.h>
 
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#include <linux/iommu.h>
 
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#include "../pcilib/version.h"
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#include "config.h"                     /* Configuration for the driver */
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#include "compat.h"                     /* Compatibility functions/definitions */
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/**
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 *
 
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 * Gets the device and API versions.
 
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 *
 
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 * @see pcilib_driver_version_t
 
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 *
 
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 */
 
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static int ioctl_version(pcidriver_privdata_t *privdata, unsigned long arg)
 
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{
 
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        int ret;
 
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        pcilib_driver_version_t info;
 
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        info = (pcilib_driver_version_t) {
 
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            .version = PCILIB_VERSION,
 
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            .interface = PCIDRIVER_INTERFACE_VERSION,
 
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            .ioctls = PCIDRIVER_IOC_MAX + 1
 
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        };
 
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        WRITE_TO_USER(pcilib_driver_version_t, info);
 
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        return 0;
 
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}
 
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/**
 
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 *
 
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 * Gets current device and driver configuration
 
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 *
 
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 * @see pcilib_device_state_t
 
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 *
 
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 */
 
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static int ioctl_device_state(pcidriver_privdata_t *privdata, unsigned long arg)
 
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{
 
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        int ret;
 
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        pcilib_device_state_t info;
 
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        info = (pcilib_device_state_t) {
 
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            .iommu = iommu_present(privdata->pdev->dev.bus),
 
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            .dma_mask = privdata->pdev->dma_mask
 
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        };
 
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        WRITE_TO_USER(pcilib_device_state_t, info);
 
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        return 0;
 
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}
 
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/**
 
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 *
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 * Sets DMA mask for the following DMA mappings.
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 *
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 * @param arg Not a pointer, but a number of bits
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                case PCIDRIVER_IOC_CLEAR_IOQ:
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                        return ioctl_clear_ioq(privdata, arg);
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                case PCIDRIVER_IOC_SET_DMA_MASK:
 
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                case PCIDRIVER_IOC_VERSION:
 
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                        return ioctl_version(privdata, arg);
 
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                case PCIDRIVER_IOC_DEVICE_STATE:
 
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                        return ioctl_device_state(privdata, arg);
 
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                case PCIDRIVER_IOC_DMA_MASK:
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                        return ioctl_set_dma_mask(privdata, arg);
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                default: