18 #include <dt-bindings/mailbox/tegra186-hsp.h>
57 	struct tegra_hsp *hsp;  member
111 static inline u32 tegra_hsp_readl(struct tegra_hsp *hsp, unsigned int offset)  in tegra_hsp_readl()  argument
113 	return readl(hsp->regs + offset);  in tegra_hsp_readl()
116 static inline void tegra_hsp_writel(struct tegra_hsp *hsp, u32 value,  in tegra_hsp_writel()  argument
119 	writel(value, hsp->regs + offset);  in tegra_hsp_writel()
144 __tegra_hsp_doorbell_get(struct tegra_hsp *hsp, unsigned int master)  in __tegra_hsp_doorbell_get()  argument
148 	list_for_each_entry(entry, &hsp->doorbells, list)  in __tegra_hsp_doorbell_get()
156 tegra_hsp_doorbell_get(struct tegra_hsp *hsp, unsigned int master)  in tegra_hsp_doorbell_get()  argument
161 	spin_lock_irqsave(&hsp->lock, flags);  in tegra_hsp_doorbell_get()
162 	db = __tegra_hsp_doorbell_get(hsp, master);  in tegra_hsp_doorbell_get()
163 	spin_unlock_irqrestore(&hsp->lock, flags);  in tegra_hsp_doorbell_get()
170 	struct tegra_hsp *hsp = data;  in tegra_hsp_doorbell_irq()  local
174 	db = tegra_hsp_doorbell_get(hsp, TEGRA_HSP_DB_MASTER_CCPLEX);  in tegra_hsp_doorbell_irq()
181 	spin_lock(&hsp->lock);  in tegra_hsp_doorbell_irq()
183 	for_each_set_bit(master, &value, hsp->mbox_db.num_chans) {  in tegra_hsp_doorbell_irq()
186 		db = __tegra_hsp_doorbell_get(hsp, master);  in tegra_hsp_doorbell_irq()
202 	spin_unlock(&hsp->lock);  in tegra_hsp_doorbell_irq()
209 	struct tegra_hsp *hsp = data;  in tegra_hsp_shared_irq()  local
214 	status = tegra_hsp_readl(hsp, HSP_INT_IR) & hsp->mask;  in tegra_hsp_shared_irq()
219 	for_each_set_bit(bit, &mask, hsp->num_sm) {  in tegra_hsp_shared_irq()
220 		struct tegra_hsp_mailbox *mb = &hsp->mailboxes[bit];  in tegra_hsp_shared_irq()
230 			spin_lock(&hsp->lock);  in tegra_hsp_shared_irq()
232 			hsp->mask &= ~BIT(HSP_INT_EMPTY_SHIFT + mb->index);  in tegra_hsp_shared_irq()
233 			tegra_hsp_writel(hsp, hsp->mask,  in tegra_hsp_shared_irq()
234 					 HSP_INT_IE(hsp->shared_irq));  in tegra_hsp_shared_irq()
236 			spin_unlock(&hsp->lock);  in tegra_hsp_shared_irq()
245 	for_each_set_bit(bit, &mask, hsp->num_sm) {  in tegra_hsp_shared_irq()
246 		struct tegra_hsp_mailbox *mb = &hsp->mailboxes[bit];  in tegra_hsp_shared_irq()
273 tegra_hsp_doorbell_create(struct tegra_hsp *hsp, const char *name,  in tegra_hsp_doorbell_create()  argument
280 	db = devm_kzalloc(hsp->dev, sizeof(*db), GFP_KERNEL);  in tegra_hsp_doorbell_create()
284 	offset = (1 + (hsp->num_sm / 2) + hsp->num_ss + hsp->num_as) * SZ_64K;  in tegra_hsp_doorbell_create()
287 	db->channel.regs = hsp->regs + offset;  in tegra_hsp_doorbell_create()
288 	db->channel.hsp = hsp;  in tegra_hsp_doorbell_create()
290 	db->name = devm_kstrdup_const(hsp->dev, name, GFP_KERNEL);  in tegra_hsp_doorbell_create()
294 	spin_lock_irqsave(&hsp->lock, flags);  in tegra_hsp_doorbell_create()
295 	list_add_tail(&db->list, &hsp->doorbells);  in tegra_hsp_doorbell_create()
296 	spin_unlock_irqrestore(&hsp->lock, flags);  in tegra_hsp_doorbell_create()
313 	struct tegra_hsp *hsp = db->channel.hsp;  in tegra_hsp_doorbell_startup()  local
320 			"invalid master ID %u for HSP channel\n",  in tegra_hsp_doorbell_startup()
325 	ccplex = tegra_hsp_doorbell_get(hsp, TEGRA_HSP_DB_MASTER_CCPLEX);  in tegra_hsp_doorbell_startup()
337 	spin_lock_irqsave(&hsp->lock, flags);  in tegra_hsp_doorbell_startup()
343 	spin_unlock_irqrestore(&hsp->lock, flags);  in tegra_hsp_doorbell_startup()
351 	struct tegra_hsp *hsp = db->channel.hsp;  in tegra_hsp_doorbell_shutdown()  local
356 	ccplex = tegra_hsp_doorbell_get(hsp, TEGRA_HSP_DB_MASTER_CCPLEX);  in tegra_hsp_doorbell_shutdown()
360 	spin_lock_irqsave(&hsp->lock, flags);  in tegra_hsp_doorbell_shutdown()
366 	spin_unlock_irqrestore(&hsp->lock, flags);  in tegra_hsp_doorbell_shutdown()
378 	struct tegra_hsp *hsp = mb->channel.hsp;  in tegra_hsp_mailbox_send_data()  local
392 	spin_lock_irqsave(&hsp->lock, flags);  in tegra_hsp_mailbox_send_data()
394 	hsp->mask |= BIT(HSP_INT_EMPTY_SHIFT + mb->index);  in tegra_hsp_mailbox_send_data()
395 	tegra_hsp_writel(hsp, hsp->mask, HSP_INT_IE(hsp->shared_irq));  in tegra_hsp_mailbox_send_data()
397 	spin_unlock_irqrestore(&hsp->lock, flags);  in tegra_hsp_mailbox_send_data()
428 	struct tegra_hsp *hsp = mb->channel.hsp;  in tegra_hsp_mailbox_startup()  local
444 	spin_lock_irqsave(&hsp->lock, flags);  in tegra_hsp_mailbox_startup()
447 		hsp->mask &= ~BIT(HSP_INT_EMPTY_SHIFT + mb->index);  in tegra_hsp_mailbox_startup()
449 		hsp->mask |= BIT(HSP_INT_FULL_SHIFT + mb->index);  in tegra_hsp_mailbox_startup()
451 	tegra_hsp_writel(hsp, hsp->mask, HSP_INT_IE(hsp->shared_irq));  in tegra_hsp_mailbox_startup()
453 	spin_unlock_irqrestore(&hsp->lock, flags);  in tegra_hsp_mailbox_startup()
455 	if (hsp->soc->has_per_mb_ie) {  in tegra_hsp_mailbox_startup()
471 	struct tegra_hsp *hsp = mb->channel.hsp;  in tegra_hsp_mailbox_shutdown()  local
474 	if (hsp->soc->has_per_mb_ie) {  in tegra_hsp_mailbox_shutdown()
483 	spin_lock_irqsave(&hsp->lock, flags);  in tegra_hsp_mailbox_shutdown()
486 		hsp->mask &= ~BIT(HSP_INT_EMPTY_SHIFT + mb->index);  in tegra_hsp_mailbox_shutdown()
488 		hsp->mask &= ~BIT(HSP_INT_FULL_SHIFT + mb->index);  in tegra_hsp_mailbox_shutdown()
490 	tegra_hsp_writel(hsp, hsp->mask, HSP_INT_IE(hsp->shared_irq));  in tegra_hsp_mailbox_shutdown()
492 	spin_unlock_irqrestore(&hsp->lock, flags);  in tegra_hsp_mailbox_shutdown()
505 	struct tegra_hsp *hsp = container_of(mbox, struct tegra_hsp, mbox_db);  in tegra_hsp_db_xlate()  local
513 	if (type != TEGRA_HSP_MBOX_TYPE_DB || !hsp->doorbell_irq)  in tegra_hsp_db_xlate()
516 	db = tegra_hsp_doorbell_get(hsp, master);  in tegra_hsp_db_xlate()
523 	spin_lock_irqsave(&hsp->lock, flags);  in tegra_hsp_db_xlate()
536 	spin_unlock_irqrestore(&hsp->lock, flags);  in tegra_hsp_db_xlate()
544 	struct tegra_hsp *hsp = container_of(mbox, struct tegra_hsp, mbox_sm);  in tegra_hsp_sm_xlate()  local
550 	if (type != TEGRA_HSP_MBOX_TYPE_SM || !hsp->shared_irqs ||  in tegra_hsp_sm_xlate()
551 	    index >= hsp->num_sm)  in tegra_hsp_sm_xlate()
554 	mb = &hsp->mailboxes[index];  in tegra_hsp_sm_xlate()
564 static int tegra_hsp_add_doorbells(struct tegra_hsp *hsp)  in tegra_hsp_add_doorbells()  argument
566 	const struct tegra_hsp_db_map *map = hsp->soc->map;  in tegra_hsp_add_doorbells()
570 		channel = tegra_hsp_doorbell_create(hsp, map->name,  in tegra_hsp_add_doorbells()
581 static int tegra_hsp_add_mailboxes(struct tegra_hsp *hsp, struct device *dev)  in tegra_hsp_add_mailboxes()  argument
585 	hsp->mailboxes = devm_kcalloc(dev, hsp->num_sm, sizeof(*hsp->mailboxes),  in tegra_hsp_add_mailboxes()
587 	if (!hsp->mailboxes)  in tegra_hsp_add_mailboxes()
590 	for (i = 0; i < hsp->num_sm; i++) {  in tegra_hsp_add_mailboxes()
591 		struct tegra_hsp_mailbox *mb = &hsp->mailboxes[i];  in tegra_hsp_add_mailboxes()
595 		mb->channel.hsp = hsp;  in tegra_hsp_add_mailboxes()
596 		mb->channel.regs = hsp->regs + SZ_64K + i * SZ_32K;  in tegra_hsp_add_mailboxes()
597 		mb->channel.chan = &hsp->mbox_sm.chans[i];  in tegra_hsp_add_mailboxes()
604 static int tegra_hsp_request_shared_irq(struct tegra_hsp *hsp)  in tegra_hsp_request_shared_irq()  argument
609 	for (i = 0; i < hsp->num_si; i++) {  in tegra_hsp_request_shared_irq()
610 		irq = hsp->shared_irqs[i];  in tegra_hsp_request_shared_irq()
614 		err = devm_request_irq(hsp->dev, irq, tegra_hsp_shared_irq, 0,  in tegra_hsp_request_shared_irq()
615 				       dev_name(hsp->dev), hsp);  in tegra_hsp_request_shared_irq()
617 			dev_err(hsp->dev, "failed to request interrupt: %d\n",  in tegra_hsp_request_shared_irq()
622 		hsp->shared_irq = i;  in tegra_hsp_request_shared_irq()
625 		tegra_hsp_writel(hsp, 0, HSP_INT_IE(hsp->shared_irq));  in tegra_hsp_request_shared_irq()
627 		dev_dbg(hsp->dev, "interrupt requested: %u\n", irq);  in tegra_hsp_request_shared_irq()
632 	if (i == hsp->num_si) {  in tegra_hsp_request_shared_irq()
633 		dev_err(hsp->dev, "failed to find available interrupt\n");  in tegra_hsp_request_shared_irq()
642 	struct tegra_hsp *hsp;  in tegra_hsp_probe()  local
648 	hsp = devm_kzalloc(&pdev->dev, sizeof(*hsp), GFP_KERNEL);  in tegra_hsp_probe()
649 	if (!hsp)  in tegra_hsp_probe()
652 	hsp->dev = &pdev->dev;  in tegra_hsp_probe()
653 	hsp->soc = of_device_get_match_data(&pdev->dev);  in tegra_hsp_probe()
654 	INIT_LIST_HEAD(&hsp->doorbells);  in tegra_hsp_probe()
655 	spin_lock_init(&hsp->lock);  in tegra_hsp_probe()
658 	hsp->regs = devm_ioremap_resource(&pdev->dev, res);  in tegra_hsp_probe()
659 	if (IS_ERR(hsp->regs))  in tegra_hsp_probe()
660 		return PTR_ERR(hsp->regs);  in tegra_hsp_probe()
662 	value = tegra_hsp_readl(hsp, HSP_INT_DIMENSIONING);  in tegra_hsp_probe()
663 	hsp->num_sm = (value >> HSP_nSM_SHIFT) & HSP_nINT_MASK;  in tegra_hsp_probe()
664 	hsp->num_ss = (value >> HSP_nSS_SHIFT) & HSP_nINT_MASK;  in tegra_hsp_probe()
665 	hsp->num_as = (value >> HSP_nAS_SHIFT) & HSP_nINT_MASK;  in tegra_hsp_probe()
666 	hsp->num_db = (value >> HSP_nDB_SHIFT) & HSP_nINT_MASK;  in tegra_hsp_probe()
667 	hsp->num_si = (value >> HSP_nSI_SHIFT) & HSP_nINT_MASK;  in tegra_hsp_probe()
671 		hsp->doorbell_irq = err;  in tegra_hsp_probe()
673 	if (hsp->num_si > 0) {  in tegra_hsp_probe()
676 		hsp->shared_irqs = devm_kcalloc(&pdev->dev, hsp->num_si,  in tegra_hsp_probe()
677 						sizeof(*hsp->shared_irqs),  in tegra_hsp_probe()
679 		if (!hsp->shared_irqs)  in tegra_hsp_probe()
682 		for (i = 0; i < hsp->num_si; i++) {  in tegra_hsp_probe()
691 				hsp->shared_irqs[i] = err;  in tegra_hsp_probe()
699 			devm_kfree(&pdev->dev, hsp->shared_irqs);  in tegra_hsp_probe()
700 			hsp->shared_irqs = NULL;  in tegra_hsp_probe()
705 	hsp->mbox_db.of_xlate = tegra_hsp_db_xlate;  in tegra_hsp_probe()
706 	hsp->mbox_db.num_chans = 32;  in tegra_hsp_probe()
707 	hsp->mbox_db.dev = &pdev->dev;  in tegra_hsp_probe()
708 	hsp->mbox_db.ops = &tegra_hsp_db_ops;  in tegra_hsp_probe()
710 	hsp->mbox_db.chans = devm_kcalloc(&pdev->dev, hsp->mbox_db.num_chans,  in tegra_hsp_probe()
711 					  sizeof(*hsp->mbox_db.chans),  in tegra_hsp_probe()
713 	if (!hsp->mbox_db.chans)  in tegra_hsp_probe()
716 	if (hsp->doorbell_irq) {  in tegra_hsp_probe()
717 		err = tegra_hsp_add_doorbells(hsp);  in tegra_hsp_probe()
725 	err = devm_mbox_controller_register(&pdev->dev, &hsp->mbox_db);  in tegra_hsp_probe()
733 	hsp->mbox_sm.of_xlate = tegra_hsp_sm_xlate;  in tegra_hsp_probe()
734 	hsp->mbox_sm.num_chans = hsp->num_sm;  in tegra_hsp_probe()
735 	hsp->mbox_sm.dev = &pdev->dev;  in tegra_hsp_probe()
736 	hsp->mbox_sm.ops = &tegra_hsp_sm_ops;  in tegra_hsp_probe()
738 	hsp->mbox_sm.chans = devm_kcalloc(&pdev->dev, hsp->mbox_sm.num_chans,  in tegra_hsp_probe()
739 					  sizeof(*hsp->mbox_sm.chans),  in tegra_hsp_probe()
741 	if (!hsp->mbox_sm.chans)  in tegra_hsp_probe()
744 	if (hsp->shared_irqs) {  in tegra_hsp_probe()
745 		err = tegra_hsp_add_mailboxes(hsp, &pdev->dev);  in tegra_hsp_probe()
753 	err = devm_mbox_controller_register(&pdev->dev, &hsp->mbox_sm);  in tegra_hsp_probe()
760 	platform_set_drvdata(pdev, hsp);  in tegra_hsp_probe()
762 	if (hsp->doorbell_irq) {  in tegra_hsp_probe()
763 		err = devm_request_irq(&pdev->dev, hsp->doorbell_irq,  in tegra_hsp_probe()
765 				       dev_name(&pdev->dev), hsp);  in tegra_hsp_probe()
769 				hsp->doorbell_irq, err);  in tegra_hsp_probe()
774 	if (hsp->shared_irqs) {  in tegra_hsp_probe()
775 		err = tegra_hsp_request_shared_irq(hsp);  in tegra_hsp_probe()
780 	lockdep_register_key(&hsp->lock_key);  in tegra_hsp_probe()
781 	lockdep_set_class(&hsp->lock, &hsp->lock_key);  in tegra_hsp_probe()
788 	struct tegra_hsp *hsp = platform_get_drvdata(pdev);  in tegra_hsp_remove()  local
790 	lockdep_unregister_key(&hsp->lock_key);  in tegra_hsp_remove()
797 	struct tegra_hsp *hsp = dev_get_drvdata(dev);  in tegra_hsp_resume()  local
801 	list_for_each_entry(db, &hsp->doorbells, list) {  in tegra_hsp_resume()
806 	if (hsp->mailboxes) {  in tegra_hsp_resume()
807 		for (i = 0; i < hsp->num_sm; i++) {  in tegra_hsp_resume()
808 			struct tegra_hsp_mailbox *mb = &hsp->mailboxes[i];  in tegra_hsp_resume()
839 	{ .compatible = "nvidia,tegra186-hsp", .data = &tegra186_hsp_soc },
840 	{ .compatible = "nvidia,tegra194-hsp", .data = &tegra194_hsp_soc },
846 		.name = "tegra-hsp",