diff options
Diffstat (limited to 'drivers/misc/cxl/phb.c')
| -rw-r--r-- | drivers/misc/cxl/phb.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/drivers/misc/cxl/phb.c b/drivers/misc/cxl/phb.c new file mode 100644 index 000000000..0935d44c1 --- /dev/null +++ b/drivers/misc/cxl/phb.c @@ -0,0 +1,44 @@ +/* + * Copyright 2014-2016 IBM Corp. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#include <linux/pci.h> +#include "cxl.h" + +bool _cxl_pci_associate_default_context(struct pci_dev *dev, struct cxl_afu *afu) +{ + struct cxl_context *ctx; + + /* + * Allocate a context to do cxl things to. This is used for interrupts + * in the peer model using a real phb, and if we eventually do DMA ops + * in the virtual phb, we'll need a default context to attach them to. + */ + ctx = cxl_dev_context_init(dev); + if (!ctx) + return false; + dev->dev.archdata.cxl_ctx = ctx; + + return (cxl_ops->afu_check_and_enable(afu) == 0); +} +/* exported via cxl_base */ + +void _cxl_pci_disable_device(struct pci_dev *dev) +{ + struct cxl_context *ctx = cxl_get_context(dev); + + if (ctx) { + if (ctx->status == STARTED) { + dev_err(&dev->dev, "Default context started\n"); + return; + } + dev->dev.archdata.cxl_ctx = NULL; + cxl_release_context(ctx); + } +} +/* exported via cxl_base */ |