1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (c) 2016-2023, NVIDIA CORPORATION. All rights reserved.
6 #include <linux/delay.h>
7 #include <linux/interrupt.h>
9 #include <linux/mailbox_controller.h>
11 #include <linux/of_device.h>
12 #include <linux/platform_device.h>
14 #include <linux/slab.h>
16 #include <soc/tegra/fuse.h>
18 #include <dt-bindings/mailbox/tegra186-hsp.h>
22 #define HSP_INT_IE(x) (0x100 + ((x) * 4))
23 #define HSP_INT_IV 0x300
24 #define HSP_INT_IR 0x304
26 #define HSP_INT_EMPTY_SHIFT 0
27 #define HSP_INT_EMPTY_MASK 0xff
28 #define HSP_INT_FULL_SHIFT 8
29 #define HSP_INT_FULL_MASK 0xff
31 #define HSP_INT_DIMENSIONING 0x380
32 #define HSP_nSM_SHIFT 0
33 #define HSP_nSS_SHIFT 4
34 #define HSP_nAS_SHIFT 8
35 #define HSP_nDB_SHIFT 12
36 #define HSP_nSI_SHIFT 16
37 #define HSP_nINT_MASK 0xf
39 #define HSP_DB_TRIGGER 0x0
40 #define HSP_DB_ENABLE 0x4
41 #define HSP_DB_RAW 0x8
42 #define HSP_DB_PENDING 0xc
44 #define HSP_SM_SHRD_MBOX 0x0
45 #define HSP_SM_SHRD_MBOX_FULL BIT(31)
46 #define HSP_SM_SHRD_MBOX_FULL_INT_IE 0x04
47 #define HSP_SM_SHRD_MBOX_EMPTY_INT_IE 0x08
49 #define HSP_SHRD_MBOX_TYPE1_TAG 0x40
50 #define HSP_SHRD_MBOX_TYPE1_DATA0 0x48
51 #define HSP_SHRD_MBOX_TYPE1_DATA1 0x4c
52 #define HSP_SHRD_MBOX_TYPE1_DATA2 0x50
53 #define HSP_SHRD_MBOX_TYPE1_DATA3 0x54
55 #define HSP_DB_CCPLEX 1
59 #define HSP_MBOX_TYPE_MASK 0xff
61 struct tegra_hsp_channel;
64 struct tegra_hsp_channel {
65 struct tegra_hsp *hsp;
66 struct mbox_chan *chan;
70 struct tegra_hsp_doorbell {
71 struct tegra_hsp_channel channel;
72 struct list_head list;
78 struct tegra_hsp_sm_ops {
79 void (*send)(struct tegra_hsp_channel *channel, void *data);
80 void (*recv)(struct tegra_hsp_channel *channel);
83 struct tegra_hsp_mailbox {
84 struct tegra_hsp_channel channel;
85 const struct tegra_hsp_sm_ops *ops;
90 struct tegra_hsp_db_map {
96 struct tegra_hsp_soc {
97 const struct tegra_hsp_db_map *map;
100 unsigned int reg_stride;
105 const struct tegra_hsp_soc *soc;
106 struct mbox_controller mbox_db;
107 struct mbox_controller mbox_sm;
109 unsigned int doorbell_irq;
110 unsigned int *shared_irqs;
111 unsigned int shared_irq;
119 struct lock_class_key lock_key;
121 struct list_head doorbells;
122 struct tegra_hsp_mailbox *mailboxes;
127 static inline u32 tegra_hsp_readl(struct tegra_hsp *hsp, unsigned int offset)
129 return readl(hsp->regs + offset);
132 static inline void tegra_hsp_writel(struct tegra_hsp *hsp, u32 value,
135 writel(value, hsp->regs + offset);
138 static inline u32 tegra_hsp_channel_readl(struct tegra_hsp_channel *channel,
141 return readl(channel->regs + offset);
144 static inline void tegra_hsp_channel_writel(struct tegra_hsp_channel *channel,
145 u32 value, unsigned int offset)
147 writel(value, channel->regs + offset);
150 static bool tegra_hsp_doorbell_can_ring(struct tegra_hsp_doorbell *db)
154 value = tegra_hsp_channel_readl(&db->channel, HSP_DB_ENABLE);
156 return (value & BIT(TEGRA_HSP_DB_MASTER_CCPLEX)) != 0;
159 static struct tegra_hsp_doorbell *
160 __tegra_hsp_doorbell_get(struct tegra_hsp *hsp, unsigned int master)
162 struct tegra_hsp_doorbell *entry;
164 list_for_each_entry(entry, &hsp->doorbells, list)
165 if (entry->master == master)
171 static struct tegra_hsp_doorbell *
172 tegra_hsp_doorbell_get(struct tegra_hsp *hsp, unsigned int master)
174 struct tegra_hsp_doorbell *db;
177 spin_lock_irqsave(&hsp->lock, flags);
178 db = __tegra_hsp_doorbell_get(hsp, master);
179 spin_unlock_irqrestore(&hsp->lock, flags);
184 static irqreturn_t tegra_hsp_doorbell_irq(int irq, void *data)
186 struct tegra_hsp *hsp = data;
187 struct tegra_hsp_doorbell *db;
188 unsigned long master, value;
190 db = tegra_hsp_doorbell_get(hsp, TEGRA_HSP_DB_MASTER_CCPLEX);
194 value = tegra_hsp_channel_readl(&db->channel, HSP_DB_PENDING);
195 tegra_hsp_channel_writel(&db->channel, value, HSP_DB_PENDING);
197 spin_lock(&hsp->lock);
199 for_each_set_bit(master, &value, hsp->mbox_db.num_chans) {
200 struct tegra_hsp_doorbell *db;
202 db = __tegra_hsp_doorbell_get(hsp, master);
204 * Depending on the bootloader chain, the CCPLEX doorbell will
205 * have some doorbells enabled, which means that requesting an
206 * interrupt will immediately fire.
208 * In that case, db->channel.chan will still be NULL here and
209 * cause a crash if not properly guarded.
211 * It remains to be seen if ignoring the doorbell in that case
212 * is the correct solution.
214 if (db && db->channel.chan)
215 mbox_chan_received_data(db->channel.chan, NULL);
218 spin_unlock(&hsp->lock);
223 static irqreturn_t tegra_hsp_shared_irq(int irq, void *data)
225 struct tegra_hsp *hsp = data;
226 unsigned long bit, mask;
229 status = tegra_hsp_readl(hsp, HSP_INT_IR) & hsp->mask;
231 /* process EMPTY interrupts first */
232 mask = (status >> HSP_INT_EMPTY_SHIFT) & HSP_INT_EMPTY_MASK;
234 for_each_set_bit(bit, &mask, hsp->num_sm) {
235 struct tegra_hsp_mailbox *mb = &hsp->mailboxes[bit];
239 * Disable EMPTY interrupts until data is sent with
240 * the next message. These interrupts are level-
241 * triggered, so if we kept them enabled they would
242 * constantly trigger until we next write data into
245 spin_lock(&hsp->lock);
247 hsp->mask &= ~BIT(HSP_INT_EMPTY_SHIFT + mb->index);
248 tegra_hsp_writel(hsp, hsp->mask,
249 HSP_INT_IE(hsp->shared_irq));
251 spin_unlock(&hsp->lock);
253 mbox_chan_txdone(mb->channel.chan, 0);
257 /* process FULL interrupts */
258 mask = (status >> HSP_INT_FULL_SHIFT) & HSP_INT_FULL_MASK;
260 for_each_set_bit(bit, &mask, hsp->num_sm) {
261 struct tegra_hsp_mailbox *mb = &hsp->mailboxes[bit];
264 mb->ops->recv(&mb->channel);
270 static struct tegra_hsp_channel *
271 tegra_hsp_doorbell_create(struct tegra_hsp *hsp, const char *name,
272 unsigned int master, unsigned int index)
274 struct tegra_hsp_doorbell *db;
278 db = devm_kzalloc(hsp->dev, sizeof(*db), GFP_KERNEL);
280 return ERR_PTR(-ENOMEM);
282 offset = (1 + (hsp->num_sm / 2) + hsp->num_ss + hsp->num_as) * SZ_64K;
283 offset += index * hsp->soc->reg_stride;
285 db->channel.regs = hsp->regs + offset;
286 db->channel.hsp = hsp;
288 db->name = devm_kstrdup_const(hsp->dev, name, GFP_KERNEL);
292 spin_lock_irqsave(&hsp->lock, flags);
293 list_add_tail(&db->list, &hsp->doorbells);
294 spin_unlock_irqrestore(&hsp->lock, flags);
299 static int tegra_hsp_doorbell_send_data(struct mbox_chan *chan, void *data)
301 struct tegra_hsp_doorbell *db = chan->con_priv;
303 tegra_hsp_channel_writel(&db->channel, 1, HSP_DB_TRIGGER);
308 static int tegra_hsp_doorbell_startup(struct mbox_chan *chan)
310 struct tegra_hsp_doorbell *db = chan->con_priv;
311 struct tegra_hsp *hsp = db->channel.hsp;
312 struct tegra_hsp_doorbell *ccplex;
316 if (db->master >= chan->mbox->num_chans) {
317 dev_err(chan->mbox->dev,
318 "invalid master ID %u for HSP channel\n",
323 ccplex = tegra_hsp_doorbell_get(hsp, TEGRA_HSP_DB_MASTER_CCPLEX);
328 * On simulation platforms the BPMP hasn't had a chance yet to mark
329 * the doorbell as ringable by the CCPLEX, so we want to skip extra
332 if (tegra_is_silicon() && !tegra_hsp_doorbell_can_ring(db))
335 spin_lock_irqsave(&hsp->lock, flags);
337 value = tegra_hsp_channel_readl(&ccplex->channel, HSP_DB_ENABLE);
338 value |= BIT(db->master);
339 tegra_hsp_channel_writel(&ccplex->channel, value, HSP_DB_ENABLE);
341 spin_unlock_irqrestore(&hsp->lock, flags);
346 static void tegra_hsp_doorbell_shutdown(struct mbox_chan *chan)
348 struct tegra_hsp_doorbell *db = chan->con_priv;
349 struct tegra_hsp *hsp = db->channel.hsp;
350 struct tegra_hsp_doorbell *ccplex;
354 ccplex = tegra_hsp_doorbell_get(hsp, TEGRA_HSP_DB_MASTER_CCPLEX);
358 spin_lock_irqsave(&hsp->lock, flags);
360 value = tegra_hsp_channel_readl(&ccplex->channel, HSP_DB_ENABLE);
361 value &= ~BIT(db->master);
362 tegra_hsp_channel_writel(&ccplex->channel, value, HSP_DB_ENABLE);
364 spin_unlock_irqrestore(&hsp->lock, flags);
367 static const struct mbox_chan_ops tegra_hsp_db_ops = {
368 .send_data = tegra_hsp_doorbell_send_data,
369 .startup = tegra_hsp_doorbell_startup,
370 .shutdown = tegra_hsp_doorbell_shutdown,
373 static void tegra_hsp_sm_send32(struct tegra_hsp_channel *channel, void *data)
377 /* copy data and mark mailbox full */
378 value = (u32)(unsigned long)data;
379 value |= HSP_SM_SHRD_MBOX_FULL;
381 tegra_hsp_channel_writel(channel, value, HSP_SM_SHRD_MBOX);
384 static void tegra_hsp_sm_recv32(struct tegra_hsp_channel *channel)
389 value = tegra_hsp_channel_readl(channel, HSP_SM_SHRD_MBOX);
390 value &= ~HSP_SM_SHRD_MBOX_FULL;
391 msg = (void *)(unsigned long)value;
392 mbox_chan_received_data(channel->chan, msg);
395 * Need to clear all bits here since some producers, such as TCU, depend
396 * on fields in the register getting cleared by the consumer.
398 * The mailbox API doesn't give the consumers a way of doing that
399 * explicitly, so we have to make sure we cover all possible cases.
401 tegra_hsp_channel_writel(channel, 0x0, HSP_SM_SHRD_MBOX);
404 static const struct tegra_hsp_sm_ops tegra_hsp_sm_32bit_ops = {
405 .send = tegra_hsp_sm_send32,
406 .recv = tegra_hsp_sm_recv32,
409 static void tegra_hsp_sm_send128(struct tegra_hsp_channel *channel, void *data)
413 memcpy(value, data, sizeof(value));
416 tegra_hsp_channel_writel(channel, value[0], HSP_SHRD_MBOX_TYPE1_DATA0);
417 tegra_hsp_channel_writel(channel, value[1], HSP_SHRD_MBOX_TYPE1_DATA1);
418 tegra_hsp_channel_writel(channel, value[2], HSP_SHRD_MBOX_TYPE1_DATA2);
419 tegra_hsp_channel_writel(channel, value[3], HSP_SHRD_MBOX_TYPE1_DATA3);
421 /* Update tag to mark mailbox full */
422 tegra_hsp_channel_writel(channel, HSP_SM_SHRD_MBOX_FULL,
423 HSP_SHRD_MBOX_TYPE1_TAG);
426 static void tegra_hsp_sm_recv128(struct tegra_hsp_channel *channel)
431 value[0] = tegra_hsp_channel_readl(channel, HSP_SHRD_MBOX_TYPE1_DATA0);
432 value[1] = tegra_hsp_channel_readl(channel, HSP_SHRD_MBOX_TYPE1_DATA1);
433 value[2] = tegra_hsp_channel_readl(channel, HSP_SHRD_MBOX_TYPE1_DATA2);
434 value[3] = tegra_hsp_channel_readl(channel, HSP_SHRD_MBOX_TYPE1_DATA3);
436 msg = (void *)(unsigned long)value;
437 mbox_chan_received_data(channel->chan, msg);
440 * Clear data registers and tag.
442 tegra_hsp_channel_writel(channel, 0x0, HSP_SHRD_MBOX_TYPE1_DATA0);
443 tegra_hsp_channel_writel(channel, 0x0, HSP_SHRD_MBOX_TYPE1_DATA1);
444 tegra_hsp_channel_writel(channel, 0x0, HSP_SHRD_MBOX_TYPE1_DATA2);
445 tegra_hsp_channel_writel(channel, 0x0, HSP_SHRD_MBOX_TYPE1_DATA3);
446 tegra_hsp_channel_writel(channel, 0x0, HSP_SHRD_MBOX_TYPE1_TAG);
449 static const struct tegra_hsp_sm_ops tegra_hsp_sm_128bit_ops = {
450 .send = tegra_hsp_sm_send128,
451 .recv = tegra_hsp_sm_recv128,
454 static int tegra_hsp_mailbox_send_data(struct mbox_chan *chan, void *data)
456 struct tegra_hsp_mailbox *mb = chan->con_priv;
457 struct tegra_hsp *hsp = mb->channel.hsp;
460 if (WARN_ON(!mb->producer))
463 mb->ops->send(&mb->channel, data);
465 /* enable EMPTY interrupt for the shared mailbox */
466 spin_lock_irqsave(&hsp->lock, flags);
468 hsp->mask |= BIT(HSP_INT_EMPTY_SHIFT + mb->index);
469 tegra_hsp_writel(hsp, hsp->mask, HSP_INT_IE(hsp->shared_irq));
471 spin_unlock_irqrestore(&hsp->lock, flags);
476 static int tegra_hsp_mailbox_flush(struct mbox_chan *chan,
477 unsigned long timeout)
479 struct tegra_hsp_mailbox *mb = chan->con_priv;
480 struct tegra_hsp_channel *ch = &mb->channel;
483 timeout = jiffies + msecs_to_jiffies(timeout);
485 while (time_before(jiffies, timeout)) {
486 value = tegra_hsp_channel_readl(ch, HSP_SM_SHRD_MBOX);
487 if ((value & HSP_SM_SHRD_MBOX_FULL) == 0) {
488 mbox_chan_txdone(chan, 0);
490 /* Wait until channel is empty */
491 if (chan->active_req != NULL)
503 static int tegra_hsp_mailbox_startup(struct mbox_chan *chan)
505 struct tegra_hsp_mailbox *mb = chan->con_priv;
506 struct tegra_hsp_channel *ch = &mb->channel;
507 struct tegra_hsp *hsp = mb->channel.hsp;
510 chan->txdone_method = TXDONE_BY_IRQ;
513 * Shared mailboxes start out as consumers by default. FULL and EMPTY
514 * interrupts are coalesced at the same shared interrupt.
516 * Keep EMPTY interrupts disabled at startup and only enable them when
517 * the mailbox is actually full. This is required because the FULL and
518 * EMPTY interrupts are level-triggered, so keeping EMPTY interrupts
519 * enabled all the time would cause an interrupt storm while mailboxes
523 spin_lock_irqsave(&hsp->lock, flags);
526 hsp->mask &= ~BIT(HSP_INT_EMPTY_SHIFT + mb->index);
528 hsp->mask |= BIT(HSP_INT_FULL_SHIFT + mb->index);
530 tegra_hsp_writel(hsp, hsp->mask, HSP_INT_IE(hsp->shared_irq));
532 spin_unlock_irqrestore(&hsp->lock, flags);
534 if (hsp->soc->has_per_mb_ie) {
536 tegra_hsp_channel_writel(ch, 0x0,
537 HSP_SM_SHRD_MBOX_EMPTY_INT_IE);
539 tegra_hsp_channel_writel(ch, 0x1,
540 HSP_SM_SHRD_MBOX_FULL_INT_IE);
546 static void tegra_hsp_mailbox_shutdown(struct mbox_chan *chan)
548 struct tegra_hsp_mailbox *mb = chan->con_priv;
549 struct tegra_hsp_channel *ch = &mb->channel;
550 struct tegra_hsp *hsp = mb->channel.hsp;
553 if (hsp->soc->has_per_mb_ie) {
555 tegra_hsp_channel_writel(ch, 0x0,
556 HSP_SM_SHRD_MBOX_EMPTY_INT_IE);
558 tegra_hsp_channel_writel(ch, 0x0,
559 HSP_SM_SHRD_MBOX_FULL_INT_IE);
562 spin_lock_irqsave(&hsp->lock, flags);
565 hsp->mask &= ~BIT(HSP_INT_EMPTY_SHIFT + mb->index);
567 hsp->mask &= ~BIT(HSP_INT_FULL_SHIFT + mb->index);
569 tegra_hsp_writel(hsp, hsp->mask, HSP_INT_IE(hsp->shared_irq));
571 spin_unlock_irqrestore(&hsp->lock, flags);
574 static const struct mbox_chan_ops tegra_hsp_sm_ops = {
575 .send_data = tegra_hsp_mailbox_send_data,
576 .flush = tegra_hsp_mailbox_flush,
577 .startup = tegra_hsp_mailbox_startup,
578 .shutdown = tegra_hsp_mailbox_shutdown,
581 static struct mbox_chan *tegra_hsp_db_xlate(struct mbox_controller *mbox,
582 const struct of_phandle_args *args)
584 struct tegra_hsp *hsp = container_of(mbox, struct tegra_hsp, mbox_db);
585 unsigned int type = args->args[0], master = args->args[1];
586 struct tegra_hsp_channel *channel = ERR_PTR(-ENODEV);
587 struct tegra_hsp_doorbell *db;
588 struct mbox_chan *chan;
592 if (type != TEGRA_HSP_MBOX_TYPE_DB || !hsp->doorbell_irq)
593 return ERR_PTR(-ENODEV);
595 db = tegra_hsp_doorbell_get(hsp, master);
597 channel = &db->channel;
600 return ERR_CAST(channel);
602 spin_lock_irqsave(&hsp->lock, flags);
604 for (i = 0; i < mbox->num_chans; i++) {
605 chan = &mbox->chans[i];
606 if (!chan->con_priv) {
607 channel->chan = chan;
615 spin_unlock_irqrestore(&hsp->lock, flags);
617 return chan ?: ERR_PTR(-EBUSY);
620 static struct mbox_chan *tegra_hsp_sm_xlate(struct mbox_controller *mbox,
621 const struct of_phandle_args *args)
623 struct tegra_hsp *hsp = container_of(mbox, struct tegra_hsp, mbox_sm);
624 unsigned int type = args->args[0], index;
625 struct tegra_hsp_mailbox *mb;
627 index = args->args[1] & TEGRA_HSP_SM_MASK;
629 if ((type & HSP_MBOX_TYPE_MASK) != TEGRA_HSP_MBOX_TYPE_SM ||
630 !hsp->shared_irqs || index >= hsp->num_sm)
631 return ERR_PTR(-ENODEV);
633 mb = &hsp->mailboxes[index];
635 if (type & TEGRA_HSP_MBOX_TYPE_SM_128BIT) {
636 if (!hsp->soc->has_128_bit_mb)
637 return ERR_PTR(-ENODEV);
639 mb->ops = &tegra_hsp_sm_128bit_ops;
641 mb->ops = &tegra_hsp_sm_32bit_ops;
644 if ((args->args[1] & TEGRA_HSP_SM_FLAG_TX) == 0)
645 mb->producer = false;
649 return mb->channel.chan;
652 static int tegra_hsp_add_doorbells(struct tegra_hsp *hsp)
654 const struct tegra_hsp_db_map *map = hsp->soc->map;
655 struct tegra_hsp_channel *channel;
658 channel = tegra_hsp_doorbell_create(hsp, map->name,
659 map->master, map->index);
661 return PTR_ERR(channel);
669 static int tegra_hsp_add_mailboxes(struct tegra_hsp *hsp, struct device *dev)
673 hsp->mailboxes = devm_kcalloc(dev, hsp->num_sm, sizeof(*hsp->mailboxes),
678 for (i = 0; i < hsp->num_sm; i++) {
679 struct tegra_hsp_mailbox *mb = &hsp->mailboxes[i];
683 mb->channel.hsp = hsp;
684 mb->channel.regs = hsp->regs + SZ_64K + i * SZ_32K;
685 mb->channel.chan = &hsp->mbox_sm.chans[i];
686 mb->channel.chan->con_priv = mb;
692 static int tegra_hsp_request_shared_irq(struct tegra_hsp *hsp)
694 unsigned int i, irq = 0;
697 for (i = 0; i < hsp->num_si; i++) {
698 irq = hsp->shared_irqs[i];
702 err = devm_request_irq(hsp->dev, irq, tegra_hsp_shared_irq, 0,
703 dev_name(hsp->dev), hsp);
705 dev_err(hsp->dev, "failed to request interrupt: %d\n",
712 /* disable all interrupts */
713 tegra_hsp_writel(hsp, 0, HSP_INT_IE(hsp->shared_irq));
715 dev_dbg(hsp->dev, "interrupt requested: %u\n", irq);
720 if (i == hsp->num_si) {
721 dev_err(hsp->dev, "failed to find available interrupt\n");
728 static int tegra_hsp_probe(struct platform_device *pdev)
730 struct tegra_hsp *hsp;
731 struct resource *res;
736 hsp = devm_kzalloc(&pdev->dev, sizeof(*hsp), GFP_KERNEL);
740 hsp->dev = &pdev->dev;
741 hsp->soc = of_device_get_match_data(&pdev->dev);
742 INIT_LIST_HEAD(&hsp->doorbells);
743 spin_lock_init(&hsp->lock);
745 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
746 hsp->regs = devm_ioremap_resource(&pdev->dev, res);
747 if (IS_ERR(hsp->regs))
748 return PTR_ERR(hsp->regs);
750 value = tegra_hsp_readl(hsp, HSP_INT_DIMENSIONING);
751 hsp->num_sm = (value >> HSP_nSM_SHIFT) & HSP_nINT_MASK;
752 hsp->num_ss = (value >> HSP_nSS_SHIFT) & HSP_nINT_MASK;
753 hsp->num_as = (value >> HSP_nAS_SHIFT) & HSP_nINT_MASK;
754 hsp->num_db = (value >> HSP_nDB_SHIFT) & HSP_nINT_MASK;
755 hsp->num_si = (value >> HSP_nSI_SHIFT) & HSP_nINT_MASK;
757 err = platform_get_irq_byname_optional(pdev, "doorbell");
759 hsp->doorbell_irq = err;
761 if (hsp->num_si > 0) {
762 unsigned int count = 0;
764 hsp->shared_irqs = devm_kcalloc(&pdev->dev, hsp->num_si,
765 sizeof(*hsp->shared_irqs),
767 if (!hsp->shared_irqs)
770 for (i = 0; i < hsp->num_si; i++) {
773 name = kasprintf(GFP_KERNEL, "shared%u", i);
777 err = platform_get_irq_byname_optional(pdev, name);
779 hsp->shared_irqs[i] = err;
787 devm_kfree(&pdev->dev, hsp->shared_irqs);
788 hsp->shared_irqs = NULL;
792 /* setup the doorbell controller */
793 hsp->mbox_db.of_xlate = tegra_hsp_db_xlate;
794 hsp->mbox_db.num_chans = 32;
795 hsp->mbox_db.dev = &pdev->dev;
796 hsp->mbox_db.ops = &tegra_hsp_db_ops;
798 hsp->mbox_db.chans = devm_kcalloc(&pdev->dev, hsp->mbox_db.num_chans,
799 sizeof(*hsp->mbox_db.chans),
801 if (!hsp->mbox_db.chans)
804 if (hsp->doorbell_irq) {
805 err = tegra_hsp_add_doorbells(hsp);
807 dev_err(&pdev->dev, "failed to add doorbells: %d\n",
813 err = devm_mbox_controller_register(&pdev->dev, &hsp->mbox_db);
815 dev_err(&pdev->dev, "failed to register doorbell mailbox: %d\n",
820 /* setup the shared mailbox controller */
821 hsp->mbox_sm.of_xlate = tegra_hsp_sm_xlate;
822 hsp->mbox_sm.num_chans = hsp->num_sm;
823 hsp->mbox_sm.dev = &pdev->dev;
824 hsp->mbox_sm.ops = &tegra_hsp_sm_ops;
826 hsp->mbox_sm.chans = devm_kcalloc(&pdev->dev, hsp->mbox_sm.num_chans,
827 sizeof(*hsp->mbox_sm.chans),
829 if (!hsp->mbox_sm.chans)
832 if (hsp->shared_irqs) {
833 err = tegra_hsp_add_mailboxes(hsp, &pdev->dev);
835 dev_err(&pdev->dev, "failed to add mailboxes: %d\n",
841 err = devm_mbox_controller_register(&pdev->dev, &hsp->mbox_sm);
843 dev_err(&pdev->dev, "failed to register shared mailbox: %d\n",
848 platform_set_drvdata(pdev, hsp);
850 if (hsp->doorbell_irq) {
851 err = devm_request_irq(&pdev->dev, hsp->doorbell_irq,
852 tegra_hsp_doorbell_irq, IRQF_NO_SUSPEND,
853 dev_name(&pdev->dev), hsp);
856 "failed to request doorbell IRQ#%u: %d\n",
857 hsp->doorbell_irq, err);
862 if (hsp->shared_irqs) {
863 err = tegra_hsp_request_shared_irq(hsp);
868 lockdep_register_key(&hsp->lock_key);
869 lockdep_set_class(&hsp->lock, &hsp->lock_key);
874 static int tegra_hsp_remove(struct platform_device *pdev)
876 struct tegra_hsp *hsp = platform_get_drvdata(pdev);
878 lockdep_unregister_key(&hsp->lock_key);
883 static int __maybe_unused tegra_hsp_resume(struct device *dev)
885 struct tegra_hsp *hsp = dev_get_drvdata(dev);
887 struct tegra_hsp_doorbell *db;
889 list_for_each_entry(db, &hsp->doorbells, list) {
890 if (db->channel.chan)
891 tegra_hsp_doorbell_startup(db->channel.chan);
894 if (hsp->mailboxes) {
895 for (i = 0; i < hsp->num_sm; i++) {
896 struct tegra_hsp_mailbox *mb = &hsp->mailboxes[i];
898 if (mb->channel.chan->cl)
899 tegra_hsp_mailbox_startup(mb->channel.chan);
906 static const struct dev_pm_ops tegra_hsp_pm_ops = {
907 .resume_noirq = tegra_hsp_resume,
910 static const struct tegra_hsp_db_map tegra186_hsp_db_map[] = {
911 { "ccplex", TEGRA_HSP_DB_MASTER_CCPLEX, HSP_DB_CCPLEX, },
912 { "bpmp", TEGRA_HSP_DB_MASTER_BPMP, HSP_DB_BPMP, },
916 static const struct tegra_hsp_soc tegra186_hsp_soc = {
917 .map = tegra186_hsp_db_map,
918 .has_per_mb_ie = false,
919 .has_128_bit_mb = false,
923 static const struct tegra_hsp_soc tegra194_hsp_soc = {
924 .map = tegra186_hsp_db_map,
925 .has_per_mb_ie = true,
926 .has_128_bit_mb = false,
930 static const struct tegra_hsp_soc tegra234_hsp_soc = {
931 .map = tegra186_hsp_db_map,
932 .has_per_mb_ie = false,
933 .has_128_bit_mb = true,
937 static const struct tegra_hsp_soc tegra264_hsp_soc = {
938 .map = tegra186_hsp_db_map,
939 .has_per_mb_ie = false,
940 .has_128_bit_mb = true,
941 .reg_stride = 0x1000,
944 static const struct of_device_id tegra_hsp_match[] = {
945 { .compatible = "nvidia,tegra186-hsp", .data = &tegra186_hsp_soc },
946 { .compatible = "nvidia,tegra194-hsp", .data = &tegra194_hsp_soc },
947 { .compatible = "nvidia,tegra234-hsp", .data = &tegra234_hsp_soc },
948 { .compatible = "nvidia,tegra264-hsp", .data = &tegra264_hsp_soc },
952 static struct platform_driver tegra_hsp_driver = {
955 .of_match_table = tegra_hsp_match,
956 .pm = &tegra_hsp_pm_ops,
958 .probe = tegra_hsp_probe,
959 .remove = tegra_hsp_remove,
962 static int __init tegra_hsp_init(void)
964 return platform_driver_register(&tegra_hsp_driver);
966 core_initcall(tegra_hsp_init);