firmware/tegra/bpmp-tegra186.c

12 #include <soc/tegra/bpmp.h>
13 #include <soc/tegra/bpmp-abi.h>
16 #include "bpmp-private.h"
82 static int tegra186_bpmp_ring_doorbell(struct tegra_bpmp *bpmp)
84 	struct tegra186_bpmp *priv = bpmp->priv;
98 	struct tegra_bpmp *bpmp = data;
99 	struct tegra186_bpmp *priv = bpmp->priv;
104 	tegra186_bpmp_ring_doorbell(bpmp);
108 				      struct tegra_bpmp *bpmp,
111 	struct tegra186_bpmp *priv = bpmp->priv;
117 	channel->ivc = devm_kzalloc(bpmp->dev, sizeof(*channel->ivc),
136 			     bpmp);
138 		dev_err(bpmp->dev, "failed to setup IVC for channel %u: %d\n",
144 	channel->bpmp = bpmp;
166 	struct tegra_bpmp *bpmp = mbox_client_to_bpmp(client);
168 	tegra_bpmp_handle_rx(bpmp);
171 static void tegra186_bpmp_teardown_channels(struct tegra_bpmp *bpmp)
173 	struct tegra186_bpmp *priv = bpmp->priv;
176 	for (i = 0; i < bpmp->threaded.count; i++) {
177 		if (!bpmp->threaded_channels[i].bpmp)
180 		tegra186_bpmp_channel_cleanup(&bpmp->threaded_channels[i]);
183 	tegra186_bpmp_channel_cleanup(bpmp->rx_channel);
184 	tegra186_bpmp_channel_cleanup(bpmp->tx_channel);
192 static int tegra186_bpmp_dram_init(struct tegra_bpmp *bpmp)
194 	struct tegra186_bpmp *priv = bpmp->priv;
200 	np = of_parse_phandle(bpmp->dev->of_node, "memory-region", 0);
206 		dev_warn(bpmp->dev, "failed to parse memory region: %d\n", err);
213 		dev_warn(bpmp->dev, "DRAM region must be larger than 8 KiB\n");
220 	priv->tx.dram = devm_memremap(bpmp->dev, priv->tx.phys, size,
224 		dev_warn(bpmp->dev, "failed to map DRAM region: %d\n", err);
233 static int tegra186_bpmp_sram_init(struct tegra_bpmp *bpmp)
235 	struct tegra186_bpmp *priv = bpmp->priv;
238 	priv->tx.pool = of_gen_pool_get(bpmp->dev->of_node, "shmem", 0);
240 		dev_err(bpmp->dev, "TX shmem pool not found\n");
247 		dev_err(bpmp->dev, "failed to allocate from TX pool\n");
251 	priv->rx.pool = of_gen_pool_get(bpmp->dev->of_node, "shmem", 1);
253 		dev_err(bpmp->dev, "RX shmem pool not found\n");
261 		dev_err(bpmp->dev, "failed to allocate from RX pool\n");
274 static int tegra186_bpmp_setup_channels(struct tegra_bpmp *bpmp)
279 	err = tegra186_bpmp_dram_init(bpmp);
281 		err = tegra186_bpmp_sram_init(bpmp);
286 	err = tegra186_bpmp_channel_init(bpmp->tx_channel, bpmp,
287 					 bpmp->soc->channels.cpu_tx.offset);
291 	err = tegra186_bpmp_channel_init(bpmp->rx_channel, bpmp,
292 					 bpmp->soc->channels.cpu_rx.offset);
294 		tegra186_bpmp_channel_cleanup(bpmp->tx_channel);
298 	for (i = 0; i < bpmp->threaded.count; i++) {
299 		unsigned int index = bpmp->soc->channels.thread.offset + i;
301 		err = tegra186_bpmp_channel_init(&bpmp->threaded_channels[i],
302 						 bpmp, index);
308 		tegra186_bpmp_teardown_channels(bpmp);
313 static void tegra186_bpmp_reset_channels(struct tegra_bpmp *bpmp)
318 	tegra186_bpmp_channel_reset(bpmp->tx_channel);
319 	tegra186_bpmp_channel_reset(bpmp->rx_channel);
321 	for (i = 0; i < bpmp->threaded.count; i++)
322 		tegra186_bpmp_channel_reset(&bpmp->threaded_channels[i]);
325 static int tegra186_bpmp_init(struct tegra_bpmp *bpmp)
330 	priv = devm_kzalloc(bpmp->dev, sizeof(*priv), GFP_KERNEL);
334 	priv->parent = bpmp;
335 	bpmp->priv = priv;
337 	err = tegra186_bpmp_setup_channels(bpmp);
342 	priv->mbox.client.dev = bpmp->dev;
350 		dev_err(bpmp->dev, "failed to get HSP mailbox: %d\n", err);
351 		tegra186_bpmp_teardown_channels(bpmp);
355 	tegra186_bpmp_reset_channels(bpmp);
360 static void tegra186_bpmp_deinit(struct tegra_bpmp *bpmp)
362 	struct tegra186_bpmp *priv = bpmp->priv;
366 	tegra186_bpmp_teardown_channels(bpmp);
369 static int tegra186_bpmp_resume(struct tegra_bpmp *bpmp)
371 	tegra186_bpmp_reset_channels(bpmp);