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The core houses infrastructure for decoder resources. A CXL port's dports are more closely related to decoder infrastructure than topology enumeration. Implement generic PCI based dport enumeration in the core, i.e. arrange for existing root port enumeration from cxl_acpi to share code with switch port enumeration which just amounts to a small difference in a pci_walk_bus() invocation once the appropriate 'struct pci_bus' has been retrieved. Set the convention that decoder objects are registered after all dports are enumerated. This enables userspace to know when the CXL core is finished establishing 'dportX' links underneath the 'portX' object. Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Link: https://lore.kernel.org/r/164368114191.354031.5270501846455462665.stgit@dwillia2-desk3.amr.corp.intel.com Signed-off-by: Dan Williams <dan.j.williams@intel.com>
30 lines
1.0 KiB
C
30 lines
1.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#include <linux/list.h>
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#include <linux/acpi.h>
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#include <cxl.h>
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struct cxl_mock_ops {
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struct list_head list;
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bool (*is_mock_adev)(struct acpi_device *dev);
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int (*acpi_table_parse_cedt)(enum acpi_cedt_type id,
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acpi_tbl_entry_handler_arg handler_arg,
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void *arg);
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bool (*is_mock_bridge)(struct device *dev);
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acpi_status (*acpi_evaluate_integer)(acpi_handle handle,
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acpi_string pathname,
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struct acpi_object_list *arguments,
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unsigned long long *data);
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struct acpi_pci_root *(*acpi_pci_find_root)(acpi_handle handle);
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bool (*is_mock_bus)(struct pci_bus *bus);
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bool (*is_mock_port)(struct device *dev);
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bool (*is_mock_dev)(struct device *dev);
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int (*devm_cxl_port_enumerate_dports)(struct device *host,
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struct cxl_port *port);
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};
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void register_cxl_mock_ops(struct cxl_mock_ops *ops);
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void unregister_cxl_mock_ops(struct cxl_mock_ops *ops);
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struct cxl_mock_ops *get_cxl_mock_ops(int *index);
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void put_cxl_mock_ops(int index);
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