From a19bd79e31769626d288cc016e21a31b6f47bf6f Mon Sep 17 00:00:00 2001 From: Ian Munsie Date: Thu, 14 Jul 2016 07:17:04 +1000 Subject: cxl: Allow a default context to be associated with an external pci_dev The cxl kernel API has a concept of a default context associated with each PCI device under the virtual PHB. The Mellanox CX4 will also use the cxl kernel API, but it does not use a virtual PHB - rather, the AFU appears as a physical function as a peer to the networking functions. In order to allow the kernel API to work with those networking functions, we will need to associate a default context with them as well. To this end, refactor the corresponding code to do this in vphb.c and export it so that it can be called from the PHB code. Signed-off-by: Ian Munsie Reviewed-by: Frederic Barrat Reviewed-by: Andrew Donnellan Signed-off-by: Michael Ellerman --- drivers/misc/cxl/base.c | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) (limited to 'drivers/misc/cxl/base.c') diff --git a/drivers/misc/cxl/base.c b/drivers/misc/cxl/base.c index 7557835cdfcd..e1e80cb99ad9 100644 --- a/drivers/misc/cxl/base.c +++ b/drivers/misc/cxl/base.c @@ -106,6 +106,41 @@ int cxl_update_properties(struct device_node *dn, } EXPORT_SYMBOL_GPL(cxl_update_properties); +/* + * API calls into the driver that may be called from the PHB code and must be + * built in. + */ +bool cxl_pci_associate_default_context(struct pci_dev *dev, struct cxl_afu *afu) +{ + bool ret; + struct cxl_calls *calls; + + calls = cxl_calls_get(); + if (!calls) + return false; + + ret = calls->cxl_pci_associate_default_context(dev, afu); + + cxl_calls_put(calls); + + return ret; +} +EXPORT_SYMBOL_GPL(cxl_pci_associate_default_context); + +void cxl_pci_disable_device(struct pci_dev *dev) +{ + struct cxl_calls *calls; + + calls = cxl_calls_get(); + if (!calls) + return; + + calls->cxl_pci_disable_device(dev); + + cxl_calls_put(calls); +} +EXPORT_SYMBOL_GPL(cxl_pci_disable_device); + static int __init cxl_base_init(void) { struct device_node *np; -- cgit v1.2.3