diff options
| author | Ian Munsie <imunsie@au1.ibm.com> | 2016-07-14 00:17:04 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2016-07-14 13:26:52 +0300 |
| commit | a19bd79e31769626d288cc016e21a31b6f47bf6f (patch) | |
| tree | da10b02e662c4541f75db8ded6ca65bc76efe3c5 /drivers/misc/cxl/vphb.c | |
| parent | 62ccf2d2efefa01d0eb92cd6ecbb45ea0499fb1c (diff) | |
| download | linux-a19bd79e31769626d288cc016e21a31b6f47bf6f.tar.xz | |
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 <imunsie@au1.ibm.com>
Reviewed-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Reviewed-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'drivers/misc/cxl/vphb.c')
| -rw-r--r-- | drivers/misc/cxl/vphb.c | 30 |
1 files changed, 3 insertions, 27 deletions
diff --git a/drivers/misc/cxl/vphb.c b/drivers/misc/cxl/vphb.c index 012b6aa9fb3e..c8a759f4ccfa 100644 --- a/drivers/misc/cxl/vphb.c +++ b/drivers/misc/cxl/vphb.c @@ -44,7 +44,6 @@ static bool cxl_pci_enable_device_hook(struct pci_dev *dev) { struct pci_controller *phb; struct cxl_afu *afu; - struct cxl_context *ctx; phb = pci_bus_to_host(dev->bus); afu = (struct cxl_afu *)phb->private_data; @@ -57,30 +56,7 @@ static bool cxl_pci_enable_device_hook(struct pci_dev *dev) set_dma_ops(&dev->dev, &dma_direct_ops); set_dma_offset(&dev->dev, PAGE_OFFSET); - /* - * Allocate a context to do cxl things too. If we eventually do real - * DMA ops, 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); -} - -static 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); - } + return _cxl_pci_associate_default_context(dev, afu); } static resource_size_t cxl_pci_window_alignment(struct pci_bus *bus, @@ -197,8 +173,8 @@ static struct pci_controller_ops cxl_pci_controller_ops = { .probe_mode = cxl_pci_probe_mode, .enable_device_hook = cxl_pci_enable_device_hook, - .disable_device = cxl_pci_disable_device, - .release_device = cxl_pci_disable_device, + .disable_device = _cxl_pci_disable_device, + .release_device = _cxl_pci_disable_device, .window_alignment = cxl_pci_window_alignment, .reset_secondary_bus = cxl_pci_reset_secondary_bus, .setup_msi_irqs = cxl_setup_msi_irqs, |