vfio: Move vfio_spapr_iommu_eeh_ioctl into vfio_iommu_spapr_tce.c

As with the previous patch EEH is always enabled if SPAPR_TCE_IOMMU, so
move this last bit of code into the main module.

Now that this function only processes VFIO_EEH_PE_OP remove a level of
indenting as well, it is only called by a case statement that already
checked VFIO_EEH_PE_OP.

This eliminates an unnecessary module and SPAPR code in a global header.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/3-v5-fc5346cacfd4+4c482-vfio_modules_jgg@nvidia.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>

1 files changed, 53 insertions, 2 deletions

diff --git a/drivers/vfio/vfio_iommu_spapr_tce.c b/drivers/vfio/vfio_iommu_spapr_tce.c
index 73cec2beae70..60a50ce8701e 100644
--- a/drivers/vfio/vfio_iommu_spapr_tce.c
+++ b/drivers/vfio/vfio_iommu_spapr_tce.c
@@ -4,6 +4,7 @@
  *
  * Copyright (C) 2013 IBM Corp.  All rights reserved.
  *     Author: Alexey Kardashevskiy <aik@ozlabs.ru>
+ * Copyright Gavin Shan, IBM Corporation 2014.
  *
  * Derived from original vfio_iommu_type1.c:
  * Copyright (C) 2012 Red Hat, Inc.  All rights reserved.
@@ -773,6 +774,57 @@ static long tce_iommu_create_default_window(struct tce_container *container)
 	return ret;
 }
 
+static long vfio_spapr_ioctl_eeh_pe_op(struct iommu_group *group,
+				       unsigned long arg)
+{
+	struct eeh_pe *pe;
+	struct vfio_eeh_pe_op op;
+	unsigned long minsz;
+
+	pe = eeh_iommu_group_to_pe(group);
+	if (!pe)
+		return -ENODEV;
+
+	minsz = offsetofend(struct vfio_eeh_pe_op, op);
+	if (copy_from_user(&op, (void __user *)arg, minsz))
+		return -EFAULT;
+	if (op.argsz < minsz || op.flags)
+		return -EINVAL;
+
+	switch (op.op) {
+	case VFIO_EEH_PE_DISABLE:
+		return eeh_pe_set_option(pe, EEH_OPT_DISABLE);
+	case VFIO_EEH_PE_ENABLE:
+		return eeh_pe_set_option(pe, EEH_OPT_ENABLE);
+	case VFIO_EEH_PE_UNFREEZE_IO:
+		return eeh_pe_set_option(pe, EEH_OPT_THAW_MMIO);
+	case VFIO_EEH_PE_UNFREEZE_DMA:
+		return eeh_pe_set_option(pe, EEH_OPT_THAW_DMA);
+	case VFIO_EEH_PE_GET_STATE:
+		return eeh_pe_get_state(pe);
+		break;
+	case VFIO_EEH_PE_RESET_DEACTIVATE:
+		return eeh_pe_reset(pe, EEH_RESET_DEACTIVATE, true);
+	case VFIO_EEH_PE_RESET_HOT:
+		return eeh_pe_reset(pe, EEH_RESET_HOT, true);
+	case VFIO_EEH_PE_RESET_FUNDAMENTAL:
+		return eeh_pe_reset(pe, EEH_RESET_FUNDAMENTAL, true);
+	case VFIO_EEH_PE_CONFIGURE:
+		return eeh_pe_configure(pe);
+	case VFIO_EEH_PE_INJECT_ERR:
+		minsz = offsetofend(struct vfio_eeh_pe_op, err.mask);
+		if (op.argsz < minsz)
+			return -EINVAL;
+		if (copy_from_user(&op, (void __user *)arg, minsz))
+			return -EFAULT;
+
+		return eeh_pe_inject_err(pe, op.err.type, op.err.func,
+					 op.err.addr, op.err.mask);
+	default:
+		return -EINVAL;
+	}
+}
+
 static long tce_iommu_ioctl(void *iommu_data,
 				 unsigned int cmd, unsigned long arg)
 {
@@ -1044,8 +1096,7 @@ static long tce_iommu_ioctl(void *iommu_data,
 
 		ret = 0;
 		list_for_each_entry(tcegrp, &container->group_list, next) {
-			ret = vfio_spapr_iommu_eeh_ioctl(tcegrp->grp,
-					cmd, arg);
+			ret = vfio_spapr_ioctl_eeh_pe_op(tcegrp->grp, arg);
 			if (ret)
 				return ret;
 		}