Lines Matching +full:entry +full:- +full:name
1 // SPDX-License-Identifier: GPL-2.0-only
4 * Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
24 * of a single 32-bit value between two processors. Each value has a single
31 * processor. By using two separate SMEM items that are single-reader and
32 * single-writer, SMP2P does not require any remote locking mechanisms.
35 * GPIO for each outbound entry and a virtual interrupt controller for each
36 * inbound entry.
47 * struct smp2p_smem_item - in memory communication structure
49 * @version: version - must be 1
50 * @features: features flag - currently unused
53 * @total_entries: number of entries - always SMP2P_MAX_ENTRY
57 * @name: name of the entry
58 * @value: content of the entry
71 u8 name[SMP2P_MAX_ENTRY_NAME]; member
77 * struct smp2p_entry - driver context matching one entry
78 * @node: list entry to keep track of allocated entries
80 * @name: name of the entry, to match against smp2p_smem_item
81 * @value: pointer to smp2p_smem_item entry value
88 * @lock: spinlock to protect read-modify-write of the value
94 const char *name; member
112 * struct qcom_smp2p - device driver context
156 if (smp2p->mbox_chan) { in qcom_smp2p_kick()
157 mbox_send_message(smp2p->mbox_chan, NULL); in qcom_smp2p_kick()
158 mbox_client_txdone(smp2p->mbox_chan, 0); in qcom_smp2p_kick()
160 regmap_write(smp2p->ipc_regmap, smp2p->ipc_offset, BIT(smp2p->ipc_bit)); in qcom_smp2p_kick()
165 * qcom_smp2p_intr() - interrupt handler for incoming notifications
175 struct smp2p_entry *entry; in qcom_smp2p_intr() local
177 unsigned smem_id = smp2p->smem_items[SMP2P_INBOUND]; in qcom_smp2p_intr()
178 unsigned pid = smp2p->remote_pid; in qcom_smp2p_intr()
186 in = smp2p->in; in qcom_smp2p_intr()
192 dev_err(smp2p->dev, in qcom_smp2p_intr()
197 smp2p->in = in; in qcom_smp2p_intr()
201 for (i = smp2p->valid_entries; i < in->valid_entries; i++) { in qcom_smp2p_intr()
202 list_for_each_entry(entry, &smp2p->inbound, node) { in qcom_smp2p_intr()
203 memcpy(buf, in->entries[i].name, sizeof(buf)); in qcom_smp2p_intr()
204 if (!strcmp(buf, entry->name)) { in qcom_smp2p_intr()
205 entry->value = &in->entries[i].value; in qcom_smp2p_intr()
210 smp2p->valid_entries = i; in qcom_smp2p_intr()
213 list_for_each_entry(entry, &smp2p->inbound, node) { in qcom_smp2p_intr()
215 if (!entry->value) in qcom_smp2p_intr()
218 val = readl(entry->value); in qcom_smp2p_intr()
220 status = val ^ entry->last_value; in qcom_smp2p_intr()
221 entry->last_value = val; in qcom_smp2p_intr()
223 /* No changes of this entry? */ in qcom_smp2p_intr()
227 for_each_set_bit(i, entry->irq_enabled, 32) { in qcom_smp2p_intr()
231 if ((val & BIT(i) && test_bit(i, entry->irq_rising)) || in qcom_smp2p_intr()
232 (!(val & BIT(i)) && test_bit(i, entry->irq_falling))) { in qcom_smp2p_intr()
233 irq_pin = irq_find_mapping(entry->domain, i); in qcom_smp2p_intr()
244 struct smp2p_entry *entry = irq_data_get_irq_chip_data(irqd); in smp2p_mask_irq() local
247 clear_bit(irq, entry->irq_enabled); in smp2p_mask_irq()
252 struct smp2p_entry *entry = irq_data_get_irq_chip_data(irqd); in smp2p_unmask_irq() local
255 set_bit(irq, entry->irq_enabled); in smp2p_unmask_irq()
260 struct smp2p_entry *entry = irq_data_get_irq_chip_data(irqd); in smp2p_set_irq_type() local
264 return -EINVAL; in smp2p_set_irq_type()
267 set_bit(irq, entry->irq_rising); in smp2p_set_irq_type()
269 clear_bit(irq, entry->irq_rising); in smp2p_set_irq_type()
272 set_bit(irq, entry->irq_falling); in smp2p_set_irq_type()
274 clear_bit(irq, entry->irq_falling); in smp2p_set_irq_type()
280 .name = "smp2p",
290 struct smp2p_entry *entry = d->host_data; in smp2p_irq_map() local
293 irq_set_chip_data(irq, entry); in smp2p_irq_map()
306 struct smp2p_entry *entry, in qcom_smp2p_inbound_entry() argument
309 entry->domain = irq_domain_add_linear(node, 32, &smp2p_irq_ops, entry); in qcom_smp2p_inbound_entry()
310 if (!entry->domain) { in qcom_smp2p_inbound_entry()
311 dev_err(smp2p->dev, "failed to add irq_domain\n"); in qcom_smp2p_inbound_entry()
312 return -ENOMEM; in qcom_smp2p_inbound_entry()
320 struct smp2p_entry *entry = data; in smp2p_update_bits() local
324 spin_lock(&entry->lock); in smp2p_update_bits()
325 val = orig = readl(entry->value); in smp2p_update_bits()
328 writel(val, entry->value); in smp2p_update_bits()
329 spin_unlock(&entry->lock); in smp2p_update_bits()
332 qcom_smp2p_kick(entry->smp2p); in smp2p_update_bits()
342 struct smp2p_entry *entry, in qcom_smp2p_outbound_entry() argument
345 struct smp2p_smem_item *out = smp2p->out; in qcom_smp2p_outbound_entry()
348 /* Allocate an entry from the smem item */ in qcom_smp2p_outbound_entry()
349 strlcpy(buf, entry->name, SMP2P_MAX_ENTRY_NAME); in qcom_smp2p_outbound_entry()
350 memcpy(out->entries[out->valid_entries].name, buf, SMP2P_MAX_ENTRY_NAME); in qcom_smp2p_outbound_entry()
352 /* Make the logical entry reference the physical value */ in qcom_smp2p_outbound_entry()
353 entry->value = &out->entries[out->valid_entries].value; in qcom_smp2p_outbound_entry()
355 out->valid_entries++; in qcom_smp2p_outbound_entry()
357 entry->state = qcom_smem_state_register(node, &smp2p_state_ops, entry); in qcom_smp2p_outbound_entry()
358 if (IS_ERR(entry->state)) { in qcom_smp2p_outbound_entry()
359 dev_err(smp2p->dev, "failed to register qcom_smem_state\n"); in qcom_smp2p_outbound_entry()
360 return PTR_ERR(entry->state); in qcom_smp2p_outbound_entry()
369 unsigned smem_id = smp2p->smem_items[SMP2P_OUTBOUND]; in qcom_smp2p_alloc_outbound_item()
370 unsigned pid = smp2p->remote_pid; in qcom_smp2p_alloc_outbound_item()
374 if (ret < 0 && ret != -EEXIST) { in qcom_smp2p_alloc_outbound_item()
375 if (ret != -EPROBE_DEFER) in qcom_smp2p_alloc_outbound_item()
376 dev_err(smp2p->dev, in qcom_smp2p_alloc_outbound_item()
383 dev_err(smp2p->dev, "Unable to acquire local smp2p item\n"); in qcom_smp2p_alloc_outbound_item()
388 out->magic = SMP2P_MAGIC; in qcom_smp2p_alloc_outbound_item()
389 out->local_pid = smp2p->local_pid; in qcom_smp2p_alloc_outbound_item()
390 out->remote_pid = smp2p->remote_pid; in qcom_smp2p_alloc_outbound_item()
391 out->total_entries = SMP2P_MAX_ENTRY; in qcom_smp2p_alloc_outbound_item()
392 out->valid_entries = 0; in qcom_smp2p_alloc_outbound_item()
399 out->version = 1; in qcom_smp2p_alloc_outbound_item()
403 smp2p->out = out; in qcom_smp2p_alloc_outbound_item()
411 struct device *dev = smp2p->dev; in smp2p_parse_ipc()
415 syscon = of_parse_phandle(dev->of_node, "qcom,ipc", 0); in smp2p_parse_ipc()
418 return -ENODEV; in smp2p_parse_ipc()
421 smp2p->ipc_regmap = syscon_node_to_regmap(syscon); in smp2p_parse_ipc()
422 if (IS_ERR(smp2p->ipc_regmap)) in smp2p_parse_ipc()
423 return PTR_ERR(smp2p->ipc_regmap); in smp2p_parse_ipc()
426 ret = of_property_read_u32_index(dev->of_node, key, 1, &smp2p->ipc_offset); in smp2p_parse_ipc()
429 return -EINVAL; in smp2p_parse_ipc()
432 ret = of_property_read_u32_index(dev->of_node, key, 2, &smp2p->ipc_bit); in smp2p_parse_ipc()
435 return -EINVAL; in smp2p_parse_ipc()
443 struct smp2p_entry *entry; in qcom_smp2p_probe() local
450 smp2p = devm_kzalloc(&pdev->dev, sizeof(*smp2p), GFP_KERNEL); in qcom_smp2p_probe()
452 return -ENOMEM; in qcom_smp2p_probe()
454 smp2p->dev = &pdev->dev; in qcom_smp2p_probe()
455 INIT_LIST_HEAD(&smp2p->inbound); in qcom_smp2p_probe()
456 INIT_LIST_HEAD(&smp2p->outbound); in qcom_smp2p_probe()
461 ret = of_property_read_u32_array(pdev->dev.of_node, key, in qcom_smp2p_probe()
462 smp2p->smem_items, 2); in qcom_smp2p_probe()
466 key = "qcom,local-pid"; in qcom_smp2p_probe()
467 ret = of_property_read_u32(pdev->dev.of_node, key, &smp2p->local_pid); in qcom_smp2p_probe()
471 key = "qcom,remote-pid"; in qcom_smp2p_probe()
472 ret = of_property_read_u32(pdev->dev.of_node, key, &smp2p->remote_pid); in qcom_smp2p_probe()
480 smp2p->mbox_client.dev = &pdev->dev; in qcom_smp2p_probe()
481 smp2p->mbox_client.knows_txdone = true; in qcom_smp2p_probe()
482 smp2p->mbox_chan = mbox_request_channel(&smp2p->mbox_client, 0); in qcom_smp2p_probe()
483 if (IS_ERR(smp2p->mbox_chan)) { in qcom_smp2p_probe()
484 if (PTR_ERR(smp2p->mbox_chan) != -ENODEV) in qcom_smp2p_probe()
485 return PTR_ERR(smp2p->mbox_chan); in qcom_smp2p_probe()
487 smp2p->mbox_chan = NULL; in qcom_smp2p_probe()
498 for_each_available_child_of_node(pdev->dev.of_node, node) { in qcom_smp2p_probe()
499 entry = devm_kzalloc(&pdev->dev, sizeof(*entry), GFP_KERNEL); in qcom_smp2p_probe()
500 if (!entry) { in qcom_smp2p_probe()
501 ret = -ENOMEM; in qcom_smp2p_probe()
505 entry->smp2p = smp2p; in qcom_smp2p_probe()
506 spin_lock_init(&entry->lock); in qcom_smp2p_probe()
508 ret = of_property_read_string(node, "qcom,entry-name", &entry->name); in qcom_smp2p_probe()
512 if (of_property_read_bool(node, "interrupt-controller")) { in qcom_smp2p_probe()
513 ret = qcom_smp2p_inbound_entry(smp2p, entry, node); in qcom_smp2p_probe()
517 list_add(&entry->node, &smp2p->inbound); in qcom_smp2p_probe()
519 ret = qcom_smp2p_outbound_entry(smp2p, entry, node); in qcom_smp2p_probe()
523 list_add(&entry->node, &smp2p->outbound); in qcom_smp2p_probe()
530 ret = devm_request_threaded_irq(&pdev->dev, irq, in qcom_smp2p_probe()
535 dev_err(&pdev->dev, "failed to request interrupt\n"); in qcom_smp2p_probe()
543 list_for_each_entry(entry, &smp2p->inbound, node) in qcom_smp2p_probe()
544 irq_domain_remove(entry->domain); in qcom_smp2p_probe()
546 list_for_each_entry(entry, &smp2p->outbound, node) in qcom_smp2p_probe()
547 qcom_smem_state_unregister(entry->state); in qcom_smp2p_probe()
549 smp2p->out->valid_entries = 0; in qcom_smp2p_probe()
552 mbox_free_channel(smp2p->mbox_chan); in qcom_smp2p_probe()
557 dev_err(&pdev->dev, "failed to read %s\n", key); in qcom_smp2p_probe()
558 return -EINVAL; in qcom_smp2p_probe()
564 struct smp2p_entry *entry; in qcom_smp2p_remove() local
566 list_for_each_entry(entry, &smp2p->inbound, node) in qcom_smp2p_remove()
567 irq_domain_remove(entry->domain); in qcom_smp2p_remove()
569 list_for_each_entry(entry, &smp2p->outbound, node) in qcom_smp2p_remove()
570 qcom_smem_state_unregister(entry->state); in qcom_smp2p_remove()
572 mbox_free_channel(smp2p->mbox_chan); in qcom_smp2p_remove()
574 smp2p->out->valid_entries = 0; in qcom_smp2p_remove()
589 .name = "qcom_smp2p",