1 // SPDX-License-Identifier: GPL-2.0
3  * System Control and Management Interface (SCMI) Base Protocol
5  * Copyright (C) 2018-2021 ARM Ltd.
8 #define pr_fmt(fmt) "SCMI Notifications BASE - " fmt
51  * scmi_base_attributes_get() - gets the implementation details
52  *	that are associated with the base protocol.
54  * @ph: SCMI protocol handle
63 	struct scmi_revision_info *rev = ph->get_priv(ph);  in scmi_base_attributes_get()
65 	ret = ph->xops->xfer_get_init(ph, PROTOCOL_ATTRIBUTES,  in scmi_base_attributes_get()
70 	ret = ph->xops->do_xfer(ph, t);  in scmi_base_attributes_get()
72 		attr_info = t->rx.buf;  in scmi_base_attributes_get()
73 		rev->num_protocols = attr_info->num_protocols;  in scmi_base_attributes_get()
74 		rev->num_agents = attr_info->num_agents;  in scmi_base_attributes_get()
77 	ph->xops->xfer_put(ph, t);  in scmi_base_attributes_get()
83  * scmi_base_vendor_id_get() - gets vendor/subvendor identifier ASCII string.
85  * @ph: SCMI protocol handle
86  * @sub_vendor: specify true if sub-vendor ID is needed
97 	struct scmi_revision_info *rev = ph->get_priv(ph);  in scmi_base_vendor_id_get()
102 		vendor_id = rev->sub_vendor_id;  in scmi_base_vendor_id_get()
103 		size = ARRAY_SIZE(rev->sub_vendor_id);  in scmi_base_vendor_id_get()
106 		vendor_id = rev->vendor_id;  in scmi_base_vendor_id_get()
107 		size = ARRAY_SIZE(rev->vendor_id);  in scmi_base_vendor_id_get()
110 	ret = ph->xops->xfer_get_init(ph, cmd, 0, size, &t);  in scmi_base_vendor_id_get()
114 	ret = ph->xops->do_xfer(ph, t);  in scmi_base_vendor_id_get()
116 		memcpy(vendor_id, t->rx.buf, size);  in scmi_base_vendor_id_get()
118 	ph->xops->xfer_put(ph, t);  in scmi_base_vendor_id_get()
124  * scmi_base_implementation_version_get() - gets a vendor-specific
125  *	implementation 32-bit version. The format of the version number is
126  *	vendor-specific
128  * @ph: SCMI protocol handle
138 	struct scmi_revision_info *rev = ph->get_priv(ph);  in scmi_base_implementation_version_get()
140 	ret = ph->xops->xfer_get_init(ph, BASE_DISCOVER_IMPLEMENT_VERSION,  in scmi_base_implementation_version_get()
145 	ret = ph->xops->do_xfer(ph, t);  in scmi_base_implementation_version_get()
147 		impl_ver = t->rx.buf;  in scmi_base_implementation_version_get()
148 		rev->impl_ver = le32_to_cpu(*impl_ver);  in scmi_base_implementation_version_get()
151 	ph->xops->xfer_put(ph, t);  in scmi_base_implementation_version_get()
157  * scmi_base_implementation_list_get() - gets the list of protocols it is
160  * @ph: SCMI protocol handle
161  * @protocols_imp: pointer to hold the list of protocol identifiers
174 	struct device *dev = ph->dev;  in scmi_base_implementation_list_get()
176 	ret = ph->xops->xfer_get_init(ph, BASE_DISCOVER_LIST_PROTOCOLS,  in scmi_base_implementation_list_get()
181 	num_skip = t->tx.buf;  in scmi_base_implementation_list_get()
182 	num_ret = t->rx.buf;  in scmi_base_implementation_list_get()
183 	list = t->rx.buf + sizeof(*num_ret);  in scmi_base_implementation_list_get()
189 		ret = ph->xops->do_xfer(ph, t);  in scmi_base_implementation_list_get()
195 			dev_err(dev, "No. of Protocol > MAX_PROTOCOLS_IMP");  in scmi_base_implementation_list_get()
204 		ph->xops->reset_rx_to_maxsz(ph, t);  in scmi_base_implementation_list_get()
207 	ph->xops->xfer_put(ph, t);  in scmi_base_implementation_list_get()
213  * scmi_base_discover_agent_get() - discover the name of an agent
215  * @ph: SCMI protocol handle
216  * @id: Agent identifier
219  * An agent id of 0 is reserved to identify the platform itself.
225 					int id, char *name)  in scmi_base_discover_agent_get()  argument
230 	ret = ph->xops->xfer_get_init(ph, BASE_DISCOVER_AGENT,  in scmi_base_discover_agent_get()
235 	put_unaligned_le32(id, t->tx.buf);  in scmi_base_discover_agent_get()
237 	ret = ph->xops->do_xfer(ph, t);  in scmi_base_discover_agent_get()
239 		strlcpy(name, t->rx.buf, SCMI_MAX_STR_SIZE);  in scmi_base_discover_agent_get()
241 	ph->xops->xfer_put(ph, t);  in scmi_base_discover_agent_get()
254 	ret = ph->xops->xfer_get_init(ph, BASE_NOTIFY_ERRORS,  in scmi_base_error_notify()
259 	cfg = t->tx.buf;  in scmi_base_error_notify()
260 	cfg->event_control = cpu_to_le32(evt_cntl);  in scmi_base_error_notify()
262 	ret = ph->xops->do_xfer(ph, t);  in scmi_base_error_notify()
264 	ph->xops->xfer_put(ph, t);  in scmi_base_error_notify()
275 		pr_debug("FAIL_ENABLED - evt[%X] ret:%d\n", evt_id, ret);  in scmi_base_set_notify_enabled()
299 	r->timestamp = timestamp;  in scmi_base_fill_custom_report()
300 	r->agent_id = le32_to_cpu(p->agent_id);  in scmi_base_fill_custom_report()
301 	r->fatal = IS_FATAL_ERROR(le32_to_cpu(p->error_status));  in scmi_base_fill_custom_report()
302 	r->cmd_count = ERROR_CMD_COUNT(le32_to_cpu(p->error_status));  in scmi_base_fill_custom_report()
303 	for (i = 0; i < r->cmd_count; i++)  in scmi_base_fill_custom_report()
304 		r->reports[i] = le64_to_cpu(p->msg_reports[i]);  in scmi_base_fill_custom_report()
312 		.id = SCMI_EVENT_BASE_ERROR_EVENT,
334 	int id, ret;  in scmi_base_protocol_init()  local
338 	struct device *dev = ph->dev;  in scmi_base_protocol_init()
341 	ret = ph->xops->version_get(ph, &version);  in scmi_base_protocol_init()
347 		return -ENOMEM;  in scmi_base_protocol_init()
349 	rev->major_ver = PROTOCOL_REV_MAJOR(version),  in scmi_base_protocol_init()
350 	rev->minor_ver = PROTOCOL_REV_MINOR(version);  in scmi_base_protocol_init()
351 	ph->set_priv(ph, rev);  in scmi_base_protocol_init()
361 	dev_info(dev, "SCMI Protocol v%d.%d '%s:%s' Firmware version 0x%x\n",  in scmi_base_protocol_init()
362 		 rev->major_ver, rev->minor_ver, rev->vendor_id,  in scmi_base_protocol_init()
363 		 rev->sub_vendor_id, rev->impl_ver);  in scmi_base_protocol_init()
364 	dev_dbg(dev, "Found %d protocol(s) %d agent(s)\n", rev->num_protocols,  in scmi_base_protocol_init()
365 		rev->num_agents);  in scmi_base_protocol_init()
367 	for (id = 0; id < rev->num_agents; id++) {  in scmi_base_protocol_init()
368 		scmi_base_discover_agent_get(ph, id, name);  in scmi_base_protocol_init()
369 		dev_dbg(dev, "Agent %d: %s\n", id, name);  in scmi_base_protocol_init()
376 	.id = SCMI_PROTOCOL_BASE,