17 #include <dt-bindings/mailbox/tegra186-hsp.h>
58 	struct tegra_hsp *hsp;  member
134 static inline u32 tegra_hsp_readl(struct tegra_hsp *hsp, unsigned int offset)  in tegra_hsp_readl()  argument
136 	return readl(hsp->regs + offset);  in tegra_hsp_readl()
139 static inline void tegra_hsp_writel(struct tegra_hsp *hsp, u32 value,  in tegra_hsp_writel()  argument
142 	writel(value, hsp->regs + offset);  in tegra_hsp_writel()
167 __tegra_hsp_doorbell_get(struct tegra_hsp *hsp, unsigned int master)  in __tegra_hsp_doorbell_get()  argument
171 	list_for_each_entry(entry, &hsp->doorbells, list)  in __tegra_hsp_doorbell_get()
179 tegra_hsp_doorbell_get(struct tegra_hsp *hsp, unsigned int master)  in tegra_hsp_doorbell_get()  argument
184 	spin_lock_irqsave(&hsp->lock, flags);  in tegra_hsp_doorbell_get()
185 	db = __tegra_hsp_doorbell_get(hsp, master);  in tegra_hsp_doorbell_get()
186 	spin_unlock_irqrestore(&hsp->lock, flags);  in tegra_hsp_doorbell_get()
193 	struct tegra_hsp *hsp = data;  in tegra_hsp_doorbell_irq()  local
197 	db = tegra_hsp_doorbell_get(hsp, TEGRA_HSP_DB_MASTER_CCPLEX);  in tegra_hsp_doorbell_irq()
204 	spin_lock(&hsp->lock);  in tegra_hsp_doorbell_irq()
206 	for_each_set_bit(master, &value, hsp->mbox_db.num_chans) {  in tegra_hsp_doorbell_irq()
209 		db = __tegra_hsp_doorbell_get(hsp, master);  in tegra_hsp_doorbell_irq()
225 	spin_unlock(&hsp->lock);  in tegra_hsp_doorbell_irq()
232 	struct tegra_hsp *hsp = data;  in tegra_hsp_shared_irq()  local
236 	status = tegra_hsp_readl(hsp, HSP_INT_IR) & hsp->mask;  in tegra_hsp_shared_irq()
241 	for_each_set_bit(bit, &mask, hsp->num_sm) {  in tegra_hsp_shared_irq()
242 		struct tegra_hsp_mailbox *mb = &hsp->mailboxes[bit];  in tegra_hsp_shared_irq()
252 			spin_lock(&hsp->lock);  in tegra_hsp_shared_irq()
254 			hsp->mask &= ~BIT(HSP_INT_EMPTY_SHIFT + mb->index);  in tegra_hsp_shared_irq()
255 			tegra_hsp_writel(hsp, hsp->mask,  in tegra_hsp_shared_irq()
256 					 HSP_INT_IE(hsp->shared_irq));  in tegra_hsp_shared_irq()
258 			spin_unlock(&hsp->lock);  in tegra_hsp_shared_irq()
267 	for_each_set_bit(bit, &mask, hsp->num_sm) {  in tegra_hsp_shared_irq()
268 		struct tegra_hsp_mailbox *mb = &hsp->mailboxes[bit];  in tegra_hsp_shared_irq()
278 tegra_hsp_doorbell_create(struct tegra_hsp *hsp, const char *name,  in tegra_hsp_doorbell_create()  argument
285 	db = devm_kzalloc(hsp->dev, sizeof(*db), GFP_KERNEL);  in tegra_hsp_doorbell_create()
289 	offset = (1 + (hsp->num_sm / 2) + hsp->num_ss + hsp->num_as) * SZ_64K;  in tegra_hsp_doorbell_create()
290 	offset += index * hsp->soc->reg_stride;  in tegra_hsp_doorbell_create()
292 	db->channel.regs = hsp->regs + offset;  in tegra_hsp_doorbell_create()
293 	db->channel.hsp = hsp;  in tegra_hsp_doorbell_create()
295 	db->name = devm_kstrdup_const(hsp->dev, name, GFP_KERNEL);  in tegra_hsp_doorbell_create()
299 	spin_lock_irqsave(&hsp->lock, flags);  in tegra_hsp_doorbell_create()
300 	list_add_tail(&db->list, &hsp->doorbells);  in tegra_hsp_doorbell_create()
301 	spin_unlock_irqrestore(&hsp->lock, flags);  in tegra_hsp_doorbell_create()
318 	struct tegra_hsp *hsp = db->channel.hsp;  in tegra_hsp_doorbell_startup()  local
325 			"invalid master ID %u for HSP channel\n",  in tegra_hsp_doorbell_startup()
330 	ccplex = tegra_hsp_doorbell_get(hsp, TEGRA_HSP_DB_MASTER_CCPLEX);  in tegra_hsp_doorbell_startup()
342 	spin_lock_irqsave(&hsp->lock, flags);  in tegra_hsp_doorbell_startup()
348 	spin_unlock_irqrestore(&hsp->lock, flags);  in tegra_hsp_doorbell_startup()
356 	struct tegra_hsp *hsp = db->channel.hsp;  in tegra_hsp_doorbell_shutdown()  local
361 	ccplex = tegra_hsp_doorbell_get(hsp, TEGRA_HSP_DB_MASTER_CCPLEX);  in tegra_hsp_doorbell_shutdown()
365 	spin_lock_irqsave(&hsp->lock, flags);  in tegra_hsp_doorbell_shutdown()
371 	spin_unlock_irqrestore(&hsp->lock, flags);  in tegra_hsp_doorbell_shutdown()
466 	struct tegra_hsp *hsp = mb->channel.hsp;  in tegra_hsp_mailbox_send_data()  local
475 	spin_lock_irqsave(&hsp->lock, flags);  in tegra_hsp_mailbox_send_data()
477 	hsp->mask |= BIT(HSP_INT_EMPTY_SHIFT + mb->index);  in tegra_hsp_mailbox_send_data()
478 	tegra_hsp_writel(hsp, hsp->mask, HSP_INT_IE(hsp->shared_irq));  in tegra_hsp_mailbox_send_data()
480 	spin_unlock_irqrestore(&hsp->lock, flags);  in tegra_hsp_mailbox_send_data()
516 	struct tegra_hsp *hsp = mb->channel.hsp;  in tegra_hsp_mailbox_startup()  local
532 	spin_lock_irqsave(&hsp->lock, flags);  in tegra_hsp_mailbox_startup()
535 		hsp->mask &= ~BIT(HSP_INT_EMPTY_SHIFT + mb->index);  in tegra_hsp_mailbox_startup()
537 		hsp->mask |= BIT(HSP_INT_FULL_SHIFT + mb->index);  in tegra_hsp_mailbox_startup()
539 	tegra_hsp_writel(hsp, hsp->mask, HSP_INT_IE(hsp->shared_irq));  in tegra_hsp_mailbox_startup()
541 	spin_unlock_irqrestore(&hsp->lock, flags);  in tegra_hsp_mailbox_startup()
543 	if (hsp->soc->has_per_mb_ie) {  in tegra_hsp_mailbox_startup()
559 	struct tegra_hsp *hsp = mb->channel.hsp;  in tegra_hsp_mailbox_shutdown()  local
562 	if (hsp->soc->has_per_mb_ie) {  in tegra_hsp_mailbox_shutdown()
571 	spin_lock_irqsave(&hsp->lock, flags);  in tegra_hsp_mailbox_shutdown()
574 		hsp->mask &= ~BIT(HSP_INT_EMPTY_SHIFT + mb->index);  in tegra_hsp_mailbox_shutdown()
576 		hsp->mask &= ~BIT(HSP_INT_FULL_SHIFT + mb->index);  in tegra_hsp_mailbox_shutdown()
578 	tegra_hsp_writel(hsp, hsp->mask, HSP_INT_IE(hsp->shared_irq));  in tegra_hsp_mailbox_shutdown()
580 	spin_unlock_irqrestore(&hsp->lock, flags);  in tegra_hsp_mailbox_shutdown()
593 	struct tegra_hsp *hsp = container_of(mbox, struct tegra_hsp, mbox_db);  in tegra_hsp_db_xlate()  local
601 	if (type != TEGRA_HSP_MBOX_TYPE_DB || !hsp->doorbell_irq)  in tegra_hsp_db_xlate()
604 	db = tegra_hsp_doorbell_get(hsp, master);  in tegra_hsp_db_xlate()
611 	spin_lock_irqsave(&hsp->lock, flags);  in tegra_hsp_db_xlate()
624 	spin_unlock_irqrestore(&hsp->lock, flags);  in tegra_hsp_db_xlate()
632 	struct tegra_hsp *hsp = container_of(mbox, struct tegra_hsp, mbox_sm);  in tegra_hsp_sm_xlate()  local
639 	    !hsp->shared_irqs || index >= hsp->num_sm)  in tegra_hsp_sm_xlate()
642 	mb = &hsp->mailboxes[index];  in tegra_hsp_sm_xlate()
645 		if (!hsp->soc->has_128_bit_mb)  in tegra_hsp_sm_xlate()
661 static int tegra_hsp_add_doorbells(struct tegra_hsp *hsp)  in tegra_hsp_add_doorbells()  argument
663 	const struct tegra_hsp_db_map *map = hsp->soc->map;  in tegra_hsp_add_doorbells()
667 		channel = tegra_hsp_doorbell_create(hsp, map->name,  in tegra_hsp_add_doorbells()
678 static int tegra_hsp_add_mailboxes(struct tegra_hsp *hsp, struct device *dev)  in tegra_hsp_add_mailboxes()  argument
682 	hsp->mailboxes = devm_kcalloc(dev, hsp->num_sm, sizeof(*hsp->mailboxes),  in tegra_hsp_add_mailboxes()
684 	if (!hsp->mailboxes)  in tegra_hsp_add_mailboxes()
687 	for (i = 0; i < hsp->num_sm; i++) {  in tegra_hsp_add_mailboxes()
688 		struct tegra_hsp_mailbox *mb = &hsp->mailboxes[i];  in tegra_hsp_add_mailboxes()
692 		mb->channel.hsp = hsp;  in tegra_hsp_add_mailboxes()
693 		mb->channel.regs = hsp->regs + SZ_64K + i * SZ_32K;  in tegra_hsp_add_mailboxes()
694 		mb->channel.chan = &hsp->mbox_sm.chans[i];  in tegra_hsp_add_mailboxes()
701 static int tegra_hsp_request_shared_irq(struct tegra_hsp *hsp)  in tegra_hsp_request_shared_irq()  argument
706 	for (i = 0; i < hsp->num_si; i++) {  in tegra_hsp_request_shared_irq()
707 		irq = hsp->shared_irqs[i];  in tegra_hsp_request_shared_irq()
711 		err = devm_request_irq(hsp->dev, irq, tegra_hsp_shared_irq, 0,  in tegra_hsp_request_shared_irq()
712 				       dev_name(hsp->dev), hsp);  in tegra_hsp_request_shared_irq()
714 			dev_err(hsp->dev, "failed to request interrupt: %d\n",  in tegra_hsp_request_shared_irq()
719 		hsp->shared_irq = i;  in tegra_hsp_request_shared_irq()
722 		tegra_hsp_writel(hsp, 0, HSP_INT_IE(hsp->shared_irq));  in tegra_hsp_request_shared_irq()
724 		dev_dbg(hsp->dev, "interrupt requested: %u\n", irq);  in tegra_hsp_request_shared_irq()
729 	if (i == hsp->num_si) {  in tegra_hsp_request_shared_irq()
730 		dev_err(hsp->dev, "failed to find available interrupt\n");  in tegra_hsp_request_shared_irq()
739 	struct tegra_hsp *hsp;  in tegra_hsp_probe()  local
744 	hsp = devm_kzalloc(&pdev->dev, sizeof(*hsp), GFP_KERNEL);  in tegra_hsp_probe()
745 	if (!hsp)  in tegra_hsp_probe()
748 	hsp->dev = &pdev->dev;  in tegra_hsp_probe()
749 	hsp->soc = of_device_get_match_data(&pdev->dev);  in tegra_hsp_probe()
750 	INIT_LIST_HEAD(&hsp->doorbells);  in tegra_hsp_probe()
751 	spin_lock_init(&hsp->lock);  in tegra_hsp_probe()
753 	hsp->regs = devm_platform_ioremap_resource(pdev, 0);  in tegra_hsp_probe()
754 	if (IS_ERR(hsp->regs))  in tegra_hsp_probe()
755 		return PTR_ERR(hsp->regs);  in tegra_hsp_probe()
757 	value = tegra_hsp_readl(hsp, HSP_INT_DIMENSIONING);  in tegra_hsp_probe()
758 	hsp->num_sm = (value >> hsp->soc->sm_shift) & hsp->soc->sm_mask;  in tegra_hsp_probe()
759 	hsp->num_ss = (value >> hsp->soc->ss_shift) & hsp->soc->ss_mask;  in tegra_hsp_probe()
760 	hsp->num_as = (value >> hsp->soc->as_shift) & hsp->soc->as_mask;  in tegra_hsp_probe()
761 	hsp->num_db = (value >> hsp->soc->db_shift) & hsp->soc->db_mask;  in tegra_hsp_probe()
762 	hsp->num_si = (value >> hsp->soc->si_shift) & hsp->soc->si_mask;  in tegra_hsp_probe()
766 		hsp->doorbell_irq = err;  in tegra_hsp_probe()
768 	if (hsp->num_si > 0) {  in tegra_hsp_probe()
771 		hsp->shared_irqs = devm_kcalloc(&pdev->dev, hsp->num_si,  in tegra_hsp_probe()
772 						sizeof(*hsp->shared_irqs),  in tegra_hsp_probe()
774 		if (!hsp->shared_irqs)  in tegra_hsp_probe()
777 		for (i = 0; i < hsp->num_si; i++) {  in tegra_hsp_probe()
786 				hsp->shared_irqs[i] = err;  in tegra_hsp_probe()
794 			devm_kfree(&pdev->dev, hsp->shared_irqs);  in tegra_hsp_probe()
795 			hsp->shared_irqs = NULL;  in tegra_hsp_probe()
800 	hsp->mbox_db.of_xlate = tegra_hsp_db_xlate;  in tegra_hsp_probe()
801 	hsp->mbox_db.num_chans = 32;  in tegra_hsp_probe()
802 	hsp->mbox_db.dev = &pdev->dev;  in tegra_hsp_probe()
803 	hsp->mbox_db.ops = &tegra_hsp_db_ops;  in tegra_hsp_probe()
805 	hsp->mbox_db.chans = devm_kcalloc(&pdev->dev, hsp->mbox_db.num_chans,  in tegra_hsp_probe()
806 					  sizeof(*hsp->mbox_db.chans),  in tegra_hsp_probe()
808 	if (!hsp->mbox_db.chans)  in tegra_hsp_probe()
811 	if (hsp->doorbell_irq) {  in tegra_hsp_probe()
812 		err = tegra_hsp_add_doorbells(hsp);  in tegra_hsp_probe()
820 	err = devm_mbox_controller_register(&pdev->dev, &hsp->mbox_db);  in tegra_hsp_probe()
828 	hsp->mbox_sm.of_xlate = tegra_hsp_sm_xlate;  in tegra_hsp_probe()
829 	hsp->mbox_sm.num_chans = hsp->num_sm;  in tegra_hsp_probe()
830 	hsp->mbox_sm.dev = &pdev->dev;  in tegra_hsp_probe()
831 	hsp->mbox_sm.ops = &tegra_hsp_sm_ops;  in tegra_hsp_probe()
833 	hsp->mbox_sm.chans = devm_kcalloc(&pdev->dev, hsp->mbox_sm.num_chans,  in tegra_hsp_probe()
834 					  sizeof(*hsp->mbox_sm.chans),  in tegra_hsp_probe()
836 	if (!hsp->mbox_sm.chans)  in tegra_hsp_probe()
839 	if (hsp->shared_irqs) {  in tegra_hsp_probe()
840 		err = tegra_hsp_add_mailboxes(hsp, &pdev->dev);  in tegra_hsp_probe()
848 	err = devm_mbox_controller_register(&pdev->dev, &hsp->mbox_sm);  in tegra_hsp_probe()
855 	platform_set_drvdata(pdev, hsp);  in tegra_hsp_probe()
857 	if (hsp->doorbell_irq) {  in tegra_hsp_probe()
858 		err = devm_request_irq(&pdev->dev, hsp->doorbell_irq,  in tegra_hsp_probe()
860 				       dev_name(&pdev->dev), hsp);  in tegra_hsp_probe()
864 				hsp->doorbell_irq, err);  in tegra_hsp_probe()
869 	if (hsp->shared_irqs) {  in tegra_hsp_probe()
870 		err = tegra_hsp_request_shared_irq(hsp);  in tegra_hsp_probe()
875 	lockdep_register_key(&hsp->lock_key);  in tegra_hsp_probe()
876 	lockdep_set_class(&hsp->lock, &hsp->lock_key);  in tegra_hsp_probe()
883 	struct tegra_hsp *hsp = platform_get_drvdata(pdev);  in tegra_hsp_remove()  local
885 	lockdep_unregister_key(&hsp->lock_key);  in tegra_hsp_remove()
890 	struct tegra_hsp *hsp = dev_get_drvdata(dev);  in tegra_hsp_resume()  local
894 	list_for_each_entry(db, &hsp->doorbells, list) {  in tegra_hsp_resume()
899 	if (hsp->mailboxes) {  in tegra_hsp_resume()
900 		for (i = 0; i < hsp->num_sm; i++) {  in tegra_hsp_resume()
901 			struct tegra_hsp_mailbox *mb = &hsp->mailboxes[i];  in tegra_hsp_resume()
990 	{ .compatible = "nvidia,tegra186-hsp", .data = &tegra186_hsp_soc },
991 	{ .compatible = "nvidia,tegra194-hsp", .data = &tegra194_hsp_soc },
992 	{ .compatible = "nvidia,tegra234-hsp", .data = &tegra234_hsp_soc },
993 	{ .compatible = "nvidia,tegra264-hsp", .data = &tegra264_hsp_soc },
999 		.name = "tegra-hsp",