diff options
| author | Christophe Lombard <clombard@linux.vnet.ibm.com> | 2016-03-04 12:26:41 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2016-03-09 13:40:00 +0100 |
| commit | 0d400f77c19e8d2606f8194846bcf18ebdc9df2a (patch) | |
| tree | 307436d00d93f55e2aa27d2233c91346c14e8961 /drivers/misc/cxl/file.c | |
| parent | cxl: Support the cxl kernel API from a guest (diff) | |
| download | linux-0d400f77c19e8d2606f8194846bcf18ebdc9df2a.tar.xz linux-0d400f77c19e8d2606f8194846bcf18ebdc9df2a.zip | |
cxl: Adapter failure handling
Check the AFU state whenever an API is called. The hypervisor may
issue a reset of the adapter when it detects a fault. When it happens,
it launches an error recovery which will either move the AFU to a
permanent failure state, or in the disabled state.
If the AFU is found to be disabled, detach all existing contexts from
it before issuing a AFU reset to re-enable it.
Before detaching contexts, notify any kernel driver through the EEH
callbacks of the AFU pci device.
Co-authored-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Signed-off-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Signed-off-by: Christophe Lombard <clombard@linux.vnet.ibm.com>
Reviewed-by: Manoj Kumar <manoj@linux.vnet.ibm.com>
Acked-by: Ian Munsie <imunsie@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'drivers/misc/cxl/file.c')
| -rw-r--r-- | drivers/misc/cxl/file.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/misc/cxl/file.c b/drivers/misc/cxl/file.c index e16046292dd6..eec468f1612f 100644 --- a/drivers/misc/cxl/file.c +++ b/drivers/misc/cxl/file.c @@ -76,7 +76,7 @@ static int __afu_open(struct inode *inode, struct file *file, bool master) if (!afu->current_mode) goto err_put_afu; - if (!cxl_ops->link_ok(adapter)) { + if (!cxl_ops->link_ok(adapter, afu)) { rc = -EIO; goto err_put_afu; } @@ -257,7 +257,7 @@ long afu_ioctl(struct file *file, unsigned int cmd, unsigned long arg) if (ctx->status == CLOSED) return -EIO; - if (!cxl_ops->link_ok(ctx->afu->adapter)) + if (!cxl_ops->link_ok(ctx->afu->adapter, ctx->afu)) return -EIO; pr_devel("afu_ioctl\n"); @@ -287,7 +287,7 @@ int afu_mmap(struct file *file, struct vm_area_struct *vm) if (ctx->status != STARTED) return -EIO; - if (!cxl_ops->link_ok(ctx->afu->adapter)) + if (!cxl_ops->link_ok(ctx->afu->adapter, ctx->afu)) return -EIO; return cxl_context_iomap(ctx, vm); @@ -334,7 +334,7 @@ ssize_t afu_read(struct file *file, char __user *buf, size_t count, int rc; DEFINE_WAIT(wait); - if (!cxl_ops->link_ok(ctx->afu->adapter)) + if (!cxl_ops->link_ok(ctx->afu->adapter, ctx->afu)) return -EIO; if (count < CXL_READ_MIN_SIZE) @@ -347,7 +347,7 @@ ssize_t afu_read(struct file *file, char __user *buf, size_t count, if (ctx_event_pending(ctx)) break; - if (!cxl_ops->link_ok(ctx->afu->adapter)) { + if (!cxl_ops->link_ok(ctx->afu->adapter, ctx->afu)) { rc = -EIO; goto out; } |