[linux-2.6-block.git] / tools / testing / cxl / test / mock.c

// SPDX-License-Identifier: GPL-2.0-only
//Copyright(c) 2021 Intel Corporation. All rights reserved.

#include <linux/libnvdimm.h>
#include <linux/rculist.h>
#include <linux/device.h>
#include <linux/export.h>
#include <linux/acpi.h>
#include <linux/pci.h>
#include <cxlmem.h>
#include <cxlpci.h>
#include "mock.h"

static LIST_HEAD(mock);

void register_cxl_mock_ops(struct cxl_mock_ops *ops)
{
	list_add_rcu(&ops->list, &mock);
}
EXPORT_SYMBOL_GPL(register_cxl_mock_ops);

DEFINE_STATIC_SRCU(cxl_mock_srcu);

void unregister_cxl_mock_ops(struct cxl_mock_ops *ops)
{
	list_del_rcu(&ops->list);
	synchronize_srcu(&cxl_mock_srcu);
}
EXPORT_SYMBOL_GPL(unregister_cxl_mock_ops);

struct cxl_mock_ops *get_cxl_mock_ops(int *index)
{
	*index = srcu_read_lock(&cxl_mock_srcu);
	return list_first_or_null_rcu(&mock, struct cxl_mock_ops, list);
}
EXPORT_SYMBOL_GPL(get_cxl_mock_ops);

void put_cxl_mock_ops(int index)
{
	srcu_read_unlock(&cxl_mock_srcu, index);
}
EXPORT_SYMBOL_GPL(put_cxl_mock_ops);

bool __wrap_is_acpi_device_node(const struct fwnode_handle *fwnode)
{
	struct acpi_device *adev =
		container_of(fwnode, struct acpi_device, fwnode);
	int index;
	struct cxl_mock_ops *ops = get_cxl_mock_ops(&index);
	bool retval = false;

	if (ops)
		retval = ops->is_mock_adev(adev);

	if (!retval)
		retval = is_acpi_device_node(fwnode);

	put_cxl_mock_ops(index);
	return retval;
}
EXPORT_SYMBOL(__wrap_is_acpi_device_node);

int __wrap_acpi_table_parse_cedt(enum acpi_cedt_type id,
				 acpi_tbl_entry_handler_arg handler_arg,
				 void *arg)
{
	int index, rc;
	struct cxl_mock_ops *ops = get_cxl_mock_ops(&index);

	if (ops)
		rc = ops->acpi_table_parse_cedt(id, handler_arg, arg);
	else
		rc = acpi_table_parse_cedt(id, handler_arg, arg);

	put_cxl_mock_ops(index);

	return rc;
}
EXPORT_SYMBOL_NS_GPL(__wrap_acpi_table_parse_cedt, "ACPI");

acpi_status __wrap_acpi_evaluate_integer(acpi_handle handle,
					 acpi_string pathname,
					 struct acpi_object_list *arguments,
					 unsigned long long *data)
{
	int index;
	struct cxl_mock_ops *ops = get_cxl_mock_ops(&index);
	acpi_status status;

	if (ops)
		status = ops->acpi_evaluate_integer(handle, pathname, arguments,
						    data);
	else
		status = acpi_evaluate_integer(handle, pathname, arguments,
					       data);
	put_cxl_mock_ops(index);

	return status;
}
EXPORT_SYMBOL(__wrap_acpi_evaluate_integer);

struct acpi_pci_root *__wrap_acpi_pci_find_root(acpi_handle handle)
{
	int index;
	struct acpi_pci_root *root;
	struct cxl_mock_ops *ops = get_cxl_mock_ops(&index);

	if (ops)
		root = ops->acpi_pci_find_root(handle);
	else
		root = acpi_pci_find_root(handle);

	put_cxl_mock_ops(index);

	return root;
}
EXPORT_SYMBOL_GPL(__wrap_acpi_pci_find_root);

struct nvdimm_bus *
__wrap_nvdimm_bus_register(struct device *dev,
			   struct nvdimm_bus_descriptor *nd_desc)
{
	int index;
	struct cxl_mock_ops *ops = get_cxl_mock_ops(&index);

	if (ops && ops->is_mock_dev(dev->parent->parent))
		nd_desc->provider_name = "cxl_test";
	put_cxl_mock_ops(index);

	return nvdimm_bus_register(dev, nd_desc);
}
EXPORT_SYMBOL_GPL(__wrap_nvdimm_bus_register);

struct cxl_hdm *__wrap_devm_cxl_setup_hdm(struct cxl_port *port,
					  struct cxl_endpoint_dvsec_info *info)

{
	int index;
	struct cxl_hdm *cxlhdm;
	struct cxl_mock_ops *ops = get_cxl_mock_ops(&index);

	if (ops && ops->is_mock_port(port->uport_dev))
		cxlhdm = ops->devm_cxl_setup_hdm(port, info);
	else
		cxlhdm = devm_cxl_setup_hdm(port, info);
	put_cxl_mock_ops(index);

	return cxlhdm;
}
EXPORT_SYMBOL_NS_GPL(__wrap_devm_cxl_setup_hdm, "CXL");

int __wrap_devm_cxl_add_passthrough_decoder(struct cxl_port *port)
{
	int rc, index;
	struct cxl_mock_ops *ops = get_cxl_mock_ops(&index);

	if (ops && ops->is_mock_port(port->uport_dev))
		rc = ops->devm_cxl_add_passthrough_decoder(port);
	else
		rc = devm_cxl_add_passthrough_decoder(port);
	put_cxl_mock_ops(index);

	return rc;
}
EXPORT_SYMBOL_NS_GPL(__wrap_devm_cxl_add_passthrough_decoder, "CXL");

int __wrap_devm_cxl_enumerate_decoders(struct cxl_hdm *cxlhdm,
				       struct cxl_endpoint_dvsec_info *info)
{
	int rc, index;
	struct cxl_port *port = cxlhdm->port;
	struct cxl_mock_ops *ops = get_cxl_mock_ops(&index);

	if (ops && ops->is_mock_port(port->uport_dev))
		rc = ops->devm_cxl_enumerate_decoders(cxlhdm, info);
	else
		rc = devm_cxl_enumerate_decoders(cxlhdm, info);
	put_cxl_mock_ops(index);

	return rc;
}
EXPORT_SYMBOL_NS_GPL(__wrap_devm_cxl_enumerate_decoders, "CXL");

int __wrap_devm_cxl_port_enumerate_dports(struct cxl_port *port)
{
	int rc, index;
	struct cxl_mock_ops *ops = get_cxl_mock_ops(&index);

	if (ops && ops->is_mock_port(port->uport_dev))
		rc = ops->devm_cxl_port_enumerate_dports(port);
	else
		rc = devm_cxl_port_enumerate_dports(port);
	put_cxl_mock_ops(index);

	return rc;
}
EXPORT_SYMBOL_NS_GPL(__wrap_devm_cxl_port_enumerate_dports, "CXL");

int __wrap_cxl_await_media_ready(struct cxl_dev_state *cxlds)
{
	int rc, index;
	struct cxl_mock_ops *ops = get_cxl_mock_ops(&index);

	if (ops && ops->is_mock_dev(cxlds->dev))
		rc = 0;
	else
		rc = cxl_await_media_ready(cxlds);
	put_cxl_mock_ops(index);

	return rc;
}
EXPORT_SYMBOL_NS_GPL(__wrap_cxl_await_media_ready, "CXL");

int __wrap_cxl_hdm_decode_init(struct cxl_dev_state *cxlds,
			       struct cxl_hdm *cxlhdm,
			       struct cxl_endpoint_dvsec_info *info)
{
	int rc = 0, index;
	struct cxl_mock_ops *ops = get_cxl_mock_ops(&index);

	if (ops && ops->is_mock_dev(cxlds->dev))
		rc = 0;
	else
		rc = cxl_hdm_decode_init(cxlds, cxlhdm, info);
	put_cxl_mock_ops(index);

	return rc;
}
EXPORT_SYMBOL_NS_GPL(__wrap_cxl_hdm_decode_init, "CXL");

int __wrap_cxl_dvsec_rr_decode(struct cxl_dev_state *cxlds,
			       struct cxl_endpoint_dvsec_info *info)
{
	int rc = 0, index;
	struct cxl_mock_ops *ops = get_cxl_mock_ops(&index);

	if (ops && ops->is_mock_dev(cxlds->dev))
		rc = 0;
	else
		rc = cxl_dvsec_rr_decode(cxlds, info);
	put_cxl_mock_ops(index);

	return rc;
}
EXPORT_SYMBOL_NS_GPL(__wrap_cxl_dvsec_rr_decode, "CXL");

struct cxl_dport *__wrap_devm_cxl_add_rch_dport(struct cxl_port *port,
						struct device *dport_dev,
						int port_id,
						resource_size_t rcrb)
{
	int index;
	struct cxl_dport *dport;
	struct cxl_mock_ops *ops = get_cxl_mock_ops(&index);

	if (ops && ops->is_mock_port(dport_dev)) {
		dport = devm_cxl_add_dport(port, dport_dev, port_id,
					   CXL_RESOURCE_NONE);
		if (!IS_ERR(dport)) {
			dport->rcrb.base = rcrb;
			dport->rch = true;
		}
	} else
		dport = devm_cxl_add_rch_dport(port, dport_dev, port_id, rcrb);
	put_cxl_mock_ops(index);

	return dport;
}
EXPORT_SYMBOL_NS_GPL(__wrap_devm_cxl_add_rch_dport, "CXL");

resource_size_t __wrap_cxl_rcd_component_reg_phys(struct device *dev,
						  struct cxl_dport *dport)
{
	int index;
	resource_size_t component_reg_phys;
	struct cxl_mock_ops *ops = get_cxl_mock_ops(&index);

	if (ops && ops->is_mock_port(dev))
		component_reg_phys = CXL_RESOURCE_NONE;
	else
		component_reg_phys = cxl_rcd_component_reg_phys(dev, dport);
	put_cxl_mock_ops(index);

	return component_reg_phys;
}
EXPORT_SYMBOL_NS_GPL(__wrap_cxl_rcd_component_reg_phys, "CXL");

void __wrap_cxl_endpoint_parse_cdat(struct cxl_port *port)
{
	int index;
	struct cxl_mock_ops *ops = get_cxl_mock_ops(&index);
	struct cxl_memdev *cxlmd = to_cxl_memdev(port->uport_dev);

	if (ops && ops->is_mock_dev(cxlmd->dev.parent))
		ops->cxl_endpoint_parse_cdat(port);
	else
		cxl_endpoint_parse_cdat(port);
	put_cxl_mock_ops(index);
}
EXPORT_SYMBOL_NS_GPL(__wrap_cxl_endpoint_parse_cdat, "CXL");

void __wrap_cxl_dport_init_ras_reporting(struct cxl_dport *dport, struct device *host)
{
	int index;
	struct cxl_mock_ops *ops = get_cxl_mock_ops(&index);

	if (!ops || !ops->is_mock_port(dport->dport_dev))
		cxl_dport_init_ras_reporting(dport, host);

	put_cxl_mock_ops(index);
}
EXPORT_SYMBOL_NS_GPL(__wrap_cxl_dport_init_ras_reporting, "CXL");

MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("cxl_test: emulation module");
MODULE_IMPORT_NS("ACPI");
MODULE_IMPORT_NS("CXL");
Commit	Line	Data
	1	// SPDX-License-Identifier: GPL-2.0-only
	2	//Copyright(c) 2021 Intel Corporation. All rights reserved.
	3
	4	#include <linux/libnvdimm.h>
	5	#include <linux/rculist.h>
	6	#include <linux/device.h>
	7	#include <linux/export.h>
	8	#include <linux/acpi.h>
	9	#include <linux/pci.h>
	10	#include <cxlmem.h>
	11	#include <cxlpci.h>
	12	#include "mock.h"
	13
	14	static LIST_HEAD(mock);
	15
	16	void register_cxl_mock_ops(struct cxl_mock_ops *ops)
	17	{
	18	list_add_rcu(&ops->list, &mock);
	19	}
	20	EXPORT_SYMBOL_GPL(register_cxl_mock_ops);
	21
	22	DEFINE_STATIC_SRCU(cxl_mock_srcu);
	23
	24	void unregister_cxl_mock_ops(struct cxl_mock_ops *ops)
	25	{
	26	list_del_rcu(&ops->list);
	27	synchronize_srcu(&cxl_mock_srcu);
	28	}
	29	EXPORT_SYMBOL_GPL(unregister_cxl_mock_ops);
	30
	31	struct cxl_mock_ops get_cxl_mock_ops(int index)
	32	{
	33	*index = srcu_read_lock(&cxl_mock_srcu);
	34	return list_first_or_null_rcu(&mock, struct cxl_mock_ops, list);
	35	}
	36	EXPORT_SYMBOL_GPL(get_cxl_mock_ops);
	37
	38	void put_cxl_mock_ops(int index)
	39	{
	40	srcu_read_unlock(&cxl_mock_srcu, index);
	41	}
	42	EXPORT_SYMBOL_GPL(put_cxl_mock_ops);
	43
	44	bool __wrap_is_acpi_device_node(const struct fwnode_handle *fwnode)
	45	{
	46	struct acpi_device *adev =
	47	container_of(fwnode, struct acpi_device, fwnode);
	48	int index;
	49	struct cxl_mock_ops *ops = get_cxl_mock_ops(&index);
	50	bool retval = false;
	51
	52	if (ops)
	53	retval = ops->is_mock_adev(adev);
	54
	55	if (!retval)
	56	retval = is_acpi_device_node(fwnode);
	57
	58	put_cxl_mock_ops(index);
	59	return retval;
	60	}
	61	EXPORT_SYMBOL(__wrap_is_acpi_device_node);
	62
	63	int __wrap_acpi_table_parse_cedt(enum acpi_cedt_type id,
	64	acpi_tbl_entry_handler_arg handler_arg,
	65	void *arg)
	66	{
	67	int index, rc;
	68	struct cxl_mock_ops *ops = get_cxl_mock_ops(&index);
	69
	70	if (ops)
	71	rc = ops->acpi_table_parse_cedt(id, handler_arg, arg);
	72	else
	73	rc = acpi_table_parse_cedt(id, handler_arg, arg);
	74
	75	put_cxl_mock_ops(index);
	76
	77	return rc;
	78	}
	79	EXPORT_SYMBOL_NS_GPL(__wrap_acpi_table_parse_cedt, "ACPI");
	80
	81	acpi_status __wrap_acpi_evaluate_integer(acpi_handle handle,
	82	acpi_string pathname,
	83	struct acpi_object_list *arguments,
	84	unsigned long long *data)
	85	{
	86	int index;
	87	struct cxl_mock_ops *ops = get_cxl_mock_ops(&index);
	88	acpi_status status;
	89
	90	if (ops)
	91	status = ops->acpi_evaluate_integer(handle, pathname, arguments,
	92	data);
	93	else
	94	status = acpi_evaluate_integer(handle, pathname, arguments,
	95	data);
	96	put_cxl_mock_ops(index);
	97
	98	return status;
	99	}
	100	EXPORT_SYMBOL(__wrap_acpi_evaluate_integer);
	101
	102	struct acpi_pci_root *__wrap_acpi_pci_find_root(acpi_handle handle)
	103	{
	104	int index;
	105	struct acpi_pci_root *root;
	106	struct cxl_mock_ops *ops = get_cxl_mock_ops(&index);
	107
	108	if (ops)
	109	root = ops->acpi_pci_find_root(handle);
	110	else
	111	root = acpi_pci_find_root(handle);
	112
	113	put_cxl_mock_ops(index);
	114
	115	return root;
	116	}
	117	EXPORT_SYMBOL_GPL(__wrap_acpi_pci_find_root);
	118
	119	struct nvdimm_bus *
	120	__wrap_nvdimm_bus_register(struct device *dev,
	121	struct nvdimm_bus_descriptor *nd_desc)
	122	{
	123	int index;
	124	struct cxl_mock_ops *ops = get_cxl_mock_ops(&index);
	125
	126	if (ops && ops->is_mock_dev(dev->parent->parent))
	127	nd_desc->provider_name = "cxl_test";
	128	put_cxl_mock_ops(index);
	129
	130	return nvdimm_bus_register(dev, nd_desc);
	131	}
	132	EXPORT_SYMBOL_GPL(__wrap_nvdimm_bus_register);
	133
	134	struct cxl_hdm __wrap_devm_cxl_setup_hdm(struct cxl_port port,
	135	struct cxl_endpoint_dvsec_info *info)
	136
	137	{
	138	int index;
	139	struct cxl_hdm *cxlhdm;
	140	struct cxl_mock_ops *ops = get_cxl_mock_ops(&index);
	141
	142	if (ops && ops->is_mock_port(port->uport_dev))
	143	cxlhdm = ops->devm_cxl_setup_hdm(port, info);
	144	else
	145	cxlhdm = devm_cxl_setup_hdm(port, info);
	146	put_cxl_mock_ops(index);
	147
	148	return cxlhdm;
	149	}
	150	EXPORT_SYMBOL_NS_GPL(__wrap_devm_cxl_setup_hdm, "CXL");
	151
	152	int __wrap_devm_cxl_add_passthrough_decoder(struct cxl_port *port)
	153	{
	154	int rc, index;
	155	struct cxl_mock_ops *ops = get_cxl_mock_ops(&index);
	156
	157	if (ops && ops->is_mock_port(port->uport_dev))
	158	rc = ops->devm_cxl_add_passthrough_decoder(port);
	159	else
	160	rc = devm_cxl_add_passthrough_decoder(port);
	161	put_cxl_mock_ops(index);
	162
	163	return rc;
	164	}
	165	EXPORT_SYMBOL_NS_GPL(__wrap_devm_cxl_add_passthrough_decoder, "CXL");
	166
	167	int __wrap_devm_cxl_enumerate_decoders(struct cxl_hdm *cxlhdm,
	168	struct cxl_endpoint_dvsec_info *info)
	169	{
	170	int rc, index;
	171	struct cxl_port *port = cxlhdm->port;
	172	struct cxl_mock_ops *ops = get_cxl_mock_ops(&index);
	173
	174	if (ops && ops->is_mock_port(port->uport_dev))
	175	rc = ops->devm_cxl_enumerate_decoders(cxlhdm, info);
	176	else
	177	rc = devm_cxl_enumerate_decoders(cxlhdm, info);
	178	put_cxl_mock_ops(index);
	179
	180	return rc;
	181	}
	182	EXPORT_SYMBOL_NS_GPL(__wrap_devm_cxl_enumerate_decoders, "CXL");
	183
	184	int __wrap_devm_cxl_port_enumerate_dports(struct cxl_port *port)
	185	{
	186	int rc, index;
	187	struct cxl_mock_ops *ops = get_cxl_mock_ops(&index);
	188
	189	if (ops && ops->is_mock_port(port->uport_dev))
	190	rc = ops->devm_cxl_port_enumerate_dports(port);
	191	else
	192	rc = devm_cxl_port_enumerate_dports(port);
	193	put_cxl_mock_ops(index);
	194
	195	return rc;
	196	}
	197	EXPORT_SYMBOL_NS_GPL(__wrap_devm_cxl_port_enumerate_dports, "CXL");
	198
	199	int __wrap_cxl_await_media_ready(struct cxl_dev_state *cxlds)
	200	{
	201	int rc, index;
	202	struct cxl_mock_ops *ops = get_cxl_mock_ops(&index);
	203
	204	if (ops && ops->is_mock_dev(cxlds->dev))
	205	rc = 0;
	206	else
	207	rc = cxl_await_media_ready(cxlds);
	208	put_cxl_mock_ops(index);
	209
	210	return rc;
	211	}
	212	EXPORT_SYMBOL_NS_GPL(__wrap_cxl_await_media_ready, "CXL");
	213
	214	int __wrap_cxl_hdm_decode_init(struct cxl_dev_state *cxlds,
	215	struct cxl_hdm *cxlhdm,
	216	struct cxl_endpoint_dvsec_info *info)
	217	{
	218	int rc = 0, index;
	219	struct cxl_mock_ops *ops = get_cxl_mock_ops(&index);
	220
	221	if (ops && ops->is_mock_dev(cxlds->dev))
	222	rc = 0;
	223	else
	224	rc = cxl_hdm_decode_init(cxlds, cxlhdm, info);
	225	put_cxl_mock_ops(index);
	226
	227	return rc;
	228	}
	229	EXPORT_SYMBOL_NS_GPL(__wrap_cxl_hdm_decode_init, "CXL");
	230
	231	int __wrap_cxl_dvsec_rr_decode(struct cxl_dev_state *cxlds,
	232	struct cxl_endpoint_dvsec_info *info)
	233	{
	234	int rc = 0, index;
	235	struct cxl_mock_ops *ops = get_cxl_mock_ops(&index);
	236
	237	if (ops && ops->is_mock_dev(cxlds->dev))
	238	rc = 0;
	239	else
	240	rc = cxl_dvsec_rr_decode(cxlds, info);
	241	put_cxl_mock_ops(index);
	242
	243	return rc;
	244	}
	245	EXPORT_SYMBOL_NS_GPL(__wrap_cxl_dvsec_rr_decode, "CXL");
	246
	247	struct cxl_dport __wrap_devm_cxl_add_rch_dport(struct cxl_port port,
	248	struct device *dport_dev,
	249	int port_id,
	250	resource_size_t rcrb)
	251	{
	252	int index;
	253	struct cxl_dport *dport;
	254	struct cxl_mock_ops *ops = get_cxl_mock_ops(&index);
	255
	256	if (ops && ops->is_mock_port(dport_dev)) {
	257	dport = devm_cxl_add_dport(port, dport_dev, port_id,
	258	CXL_RESOURCE_NONE);
	259	if (!IS_ERR(dport)) {
	260	dport->rcrb.base = rcrb;
	261	dport->rch = true;
	262	}
	263	} else
	264	dport = devm_cxl_add_rch_dport(port, dport_dev, port_id, rcrb);
	265	put_cxl_mock_ops(index);
	266
	267	return dport;
	268	}
	269	EXPORT_SYMBOL_NS_GPL(__wrap_devm_cxl_add_rch_dport, "CXL");
	270
	271	resource_size_t __wrap_cxl_rcd_component_reg_phys(struct device *dev,
	272	struct cxl_dport *dport)
	273	{
	274	int index;
	275	resource_size_t component_reg_phys;
	276	struct cxl_mock_ops *ops = get_cxl_mock_ops(&index);
	277
	278	if (ops && ops->is_mock_port(dev))
	279	component_reg_phys = CXL_RESOURCE_NONE;
	280	else
	281	component_reg_phys = cxl_rcd_component_reg_phys(dev, dport);
	282	put_cxl_mock_ops(index);
	283
	284	return component_reg_phys;
	285	}
	286	EXPORT_SYMBOL_NS_GPL(__wrap_cxl_rcd_component_reg_phys, "CXL");
	287
	288	void __wrap_cxl_endpoint_parse_cdat(struct cxl_port *port)
	289	{
	290	int index;
	291	struct cxl_mock_ops *ops = get_cxl_mock_ops(&index);
	292	struct cxl_memdev *cxlmd = to_cxl_memdev(port->uport_dev);
	293
	294	if (ops && ops->is_mock_dev(cxlmd->dev.parent))
	295	ops->cxl_endpoint_parse_cdat(port);
	296	else
	297	cxl_endpoint_parse_cdat(port);
	298	put_cxl_mock_ops(index);
	299	}
	300	EXPORT_SYMBOL_NS_GPL(__wrap_cxl_endpoint_parse_cdat, "CXL");
	301
	302	void __wrap_cxl_dport_init_ras_reporting(struct cxl_dport dport, struct device host)
	303	{
	304	int index;
	305	struct cxl_mock_ops *ops = get_cxl_mock_ops(&index);
	306
	307	if (!ops \|\| !ops->is_mock_port(dport->dport_dev))
	308	cxl_dport_init_ras_reporting(dport, host);
	309
	310	put_cxl_mock_ops(index);
	311	}
	312	EXPORT_SYMBOL_NS_GPL(__wrap_cxl_dport_init_ras_reporting, "CXL");
	313
	314	MODULE_LICENSE("GPL v2");
	315	MODULE_DESCRIPTION("cxl_test: emulation module");
	316	MODULE_IMPORT_NS("ACPI");
	317	MODULE_IMPORT_NS("CXL");