struct cxl_context *cxl_dev_context_init(struct pci_dev *dev)
{
struct cxl_afu *afu;
struct cxl_context *ctx;
int rc;
afu = cxl_pci_to_afu(dev);
if (IS_ERR(afu))
return ERR_CAST(afu);
ctx = cxl_context_alloc();
if (!ctx)
return ERR_PTR(-ENOMEM);
ctx->kernelapi = true;
/* Make it a slave context. We can promote it later? */
rc = cxl_context_init(ctx, afu, false);
if (rc)
goto err_ctx;
return ctx;
err_ctx:
kfree(ctx);
return ERR_PTR(rc);
}
struct device *cxl_get_phys_dev(struct pci_dev *dev)
{
struct cxl_afu *afu;
afu = cxl_pci_to_afu(dev);
return afu->adapter->dev.parent;
}
ssize_t cxl_read_adapter_vpd(struct pci_dev *dev, void *buf, size_t count)
{
struct cxl_afu *afu = cxl_pci_to_afu(dev);
if (IS_ERR(afu))
return -ENODEV;
return cxl_ops->read_adapter_vpd(afu->adapter, buf, count);
}
struct cxl_context *cxl_dev_context_init(struct pci_dev *dev)
{
struct address_space *mapping;
struct cxl_afu *afu;
struct cxl_context *ctx;
int rc;
afu = cxl_pci_to_afu(dev);
ctx = cxl_context_alloc();
if (IS_ERR(ctx)) {
rc = PTR_ERR(ctx);
goto err_dev;
}
ctx->kernelapi = true;
/*
* Make our own address space since we won't have one from the
* filesystem like the user api has, and even if we do associate a file
* with this context we don't want to use the global anonymous inode's
* address space as that can invalidate unrelated users:
*/
mapping = kmalloc(sizeof(struct address_space), GFP_KERNEL);
if (!mapping) {
rc = -ENOMEM;
goto err_ctx;
}
address_space_init_once(mapping);
/* Make it a slave context. We can promote it later? */
rc = cxl_context_init(ctx, afu, false, mapping);
if (rc)
goto err_mapping;
cxl_assign_psn_space(ctx);
return ctx;
err_mapping:
kfree(mapping);
err_ctx:
kfree(ctx);
err_dev:
return ERR_PTR(rc);
}
struct cxl_context *cxl_dev_context_init(struct pci_dev *dev)
{
struct cxl_afu *afu;
struct cxl_context *ctx;
int rc;
afu = cxl_pci_to_afu(dev);
get_device(&afu->dev);
ctx = cxl_context_alloc();
if (IS_ERR(ctx))
return ctx;
/* Make it a slave context. We can promote it later? */
rc = cxl_context_init(ctx, afu, false, NULL);
if (rc) {
kfree(ctx);
put_device(&afu->dev);
return ERR_PTR(-ENOMEM);
}
cxl_assign_psn_space(ctx);
return ctx;
}