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 device *dev, int dvsec,
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(dev))
238 rc = 0;
239 else
240 rc = cxl_dvsec_rr_decode(dev, dvsec, 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 MODULE_LICENSE("GPL v2");
303 MODULE_IMPORT_NS(ACPI);
304 MODULE_IMPORT_NS(CXL);
305
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