Adding upstream version 2.8.0+dfsg.upstream/2.8.0+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

2 files changed, 293 insertions, 0 deletions

diff --git a/plat/mediatek/mt8183/drivers/mcdi/mtk_mcdi.c b/plat/mediatek/mt8183/drivers/mcdi/mtk_mcdi.c
new file mode 100644
index 0000000..29eebcb
--- /dev/null
+++ b/plat/mediatek/mt8183/drivers/mcdi/mtk_mcdi.c
@@ -0,0 +1,259 @@
+/*
+ * Copyright (c) 2019, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <common/debug.h>
+#include <drivers/delay_timer.h>
+#include <lib/mmio.h>
+#include <sspm_reg.h>
+#include <mtk_mcdi.h>
+
+static inline uint32_t mcdi_mbox_read(uint32_t id)
+{
+	return mmio_read_32(SSPM_MBOX_3_BASE + (id << 2));
+}
+
+static inline void mcdi_mbox_write(uint32_t id, uint32_t val)
+{
+	mmio_write_32(SSPM_MBOX_3_BASE + (id << 2), val);
+}
+
+void sspm_set_bootaddr(uint32_t bootaddr)
+{
+	mcdi_mbox_write(MCDI_MBOX_BOOTADDR, bootaddr);
+}
+
+void sspm_cluster_pwr_off_notify(uint32_t cluster)
+{
+	mcdi_mbox_write(MCDI_MBOX_CLUSTER_0_ATF_ACTION_DONE + cluster, 1);
+}
+
+void sspm_cluster_pwr_on_notify(uint32_t cluster)
+{
+	mcdi_mbox_write(MCDI_MBOX_CLUSTER_0_ATF_ACTION_DONE + cluster, 0);
+}
+
+void sspm_standbywfi_irq_enable(uint32_t cpu_idx)
+{
+	mmio_write_32(SSPM_CFGREG_ACAO_INT_SET, STANDBYWFI_EN(cpu_idx));
+}
+
+uint32_t mcdi_avail_cpu_mask_read(void)
+{
+	return mcdi_mbox_read(MCDI_MBOX_AVAIL_CPU_MASK);
+}
+
+uint32_t mcdi_avail_cpu_mask_write(uint32_t mask)
+{
+	mcdi_mbox_write(MCDI_MBOX_AVAIL_CPU_MASK, mask);
+
+	return mask;
+}
+
+uint32_t mcdi_avail_cpu_mask_set(uint32_t mask)
+{
+	uint32_t m;
+
+	m = mcdi_mbox_read(MCDI_MBOX_AVAIL_CPU_MASK);
+	m |= mask;
+	mcdi_mbox_write(MCDI_MBOX_AVAIL_CPU_MASK, m);
+
+	return m;
+}
+
+uint32_t mcdi_avail_cpu_mask_clr(uint32_t mask)
+{
+	uint32_t m;
+
+	m = mcdi_mbox_read(MCDI_MBOX_AVAIL_CPU_MASK);
+	m &= ~mask;
+	mcdi_mbox_write(MCDI_MBOX_AVAIL_CPU_MASK, m);
+
+	return m;
+}
+
+uint32_t mcdi_cpu_cluster_pwr_stat_read(void)
+{
+	return mcdi_mbox_read(MCDI_MBOX_CPU_CLUSTER_PWR_STAT);
+}
+
+#define PAUSE_BIT		1
+#define CLUSTER_OFF_OFS		20
+#define CPU_OFF_OFS		24
+#define CLUSTER_ON_OFS		4
+#define CPU_ON_OFS		8
+
+static uint32_t target_mask(int cluster, int cpu_idx, bool on)
+{
+	uint32_t t = 0;
+
+	if (on) {
+		if (cluster >= 0)
+			t |= BIT(cluster + CLUSTER_ON_OFS);
+
+		if (cpu_idx >= 0)
+			t |= BIT(cpu_idx + CPU_ON_OFS);
+	} else {
+		if (cluster >= 0)
+			t |= BIT(cluster + CLUSTER_OFF_OFS);
+
+		if (cpu_idx >= 0)
+			t |= BIT(cpu_idx + CPU_OFF_OFS);
+	}
+
+	return t;
+}
+
+void mcdi_pause_clr(int cluster, int cpu_idx, bool on)
+{
+	uint32_t tgt = target_mask(cluster, cpu_idx, on);
+	uint32_t m = mcdi_mbox_read(MCDI_MBOX_PAUSE_ACTION);
+
+	m &= ~tgt;
+	mcdi_mbox_write(MCDI_MBOX_PAUSE_ACTION, m);
+}
+
+void mcdi_pause_set(int cluster, int cpu_idx, bool on)
+{
+	uint32_t tgt = target_mask(cluster, cpu_idx, on);
+	uint32_t m = mcdi_mbox_read(MCDI_MBOX_PAUSE_ACTION);
+	uint32_t tgtn = target_mask(-1, cpu_idx, !on);
+
+	/* request on and off at the same time to ensure it can be paused */
+	m |= tgt | tgtn;
+	mcdi_mbox_write(MCDI_MBOX_PAUSE_ACTION, m);
+
+	/* wait pause_ack */
+	while (!mcdi_mbox_read(MCDI_MBOX_PAUSE_ACK))
+		;
+
+	/* clear non-requested operation */
+	m &= ~tgtn;
+	mcdi_mbox_write(MCDI_MBOX_PAUSE_ACTION, m);
+}
+
+void mcdi_pause(void)
+{
+	uint32_t m = mcdi_mbox_read(MCDI_MBOX_PAUSE_ACTION) | BIT(PAUSE_BIT);
+
+	mcdi_mbox_write(MCDI_MBOX_PAUSE_ACTION, m);
+
+	/* wait pause_ack */
+	while (!mcdi_mbox_read(MCDI_MBOX_PAUSE_ACK))
+		;
+}
+
+void mcdi_unpause(void)
+{
+	uint32_t m = mcdi_mbox_read(MCDI_MBOX_PAUSE_ACTION) & ~BIT(PAUSE_BIT);
+
+	mcdi_mbox_write(MCDI_MBOX_PAUSE_ACTION, m);
+}
+
+void mcdi_hotplug_wait_ack(int cluster, int cpu_idx, bool on)
+{
+	uint32_t tgt = target_mask(cluster, cpu_idx, on);
+	uint32_t ack = mcdi_mbox_read(MCDI_MBOX_HP_ACK);
+
+	/* wait until ack */
+	while (!(ack & tgt))
+		ack = mcdi_mbox_read(MCDI_MBOX_HP_ACK);
+}
+
+void mcdi_hotplug_clr(int cluster, int cpu_idx, bool on)
+{
+	uint32_t tgt = target_mask(cluster, cpu_idx, on);
+	uint32_t tgt_cpu = target_mask(-1, cpu_idx, on);
+	uint32_t cmd = mcdi_mbox_read(MCDI_MBOX_HP_CMD);
+	uint32_t ack = mcdi_mbox_read(MCDI_MBOX_HP_ACK);
+
+	if (!(cmd & tgt))
+		return;
+
+	/* wait until ack */
+	while (!(ack & tgt_cpu))
+		ack = mcdi_mbox_read(MCDI_MBOX_HP_ACK);
+
+	cmd &= ~tgt;
+	mcdi_mbox_write(MCDI_MBOX_HP_CMD, cmd);
+}
+
+void mcdi_hotplug_set(int cluster, int cpu_idx, bool on)
+{
+	uint32_t tgt = target_mask(cluster, cpu_idx, on);
+	uint32_t tgt_cpu = target_mask(-1, cpu_idx, on);
+	uint32_t cmd = mcdi_mbox_read(MCDI_MBOX_HP_CMD);
+	uint32_t ack = mcdi_mbox_read(MCDI_MBOX_HP_ACK);
+
+	if ((cmd & tgt) == tgt)
+		return;
+
+	/* wait until ack clear */
+	while (ack & tgt_cpu)
+		ack = mcdi_mbox_read(MCDI_MBOX_HP_ACK);
+
+	cmd |= tgt;
+	mcdi_mbox_write(MCDI_MBOX_HP_CMD, cmd);
+}
+
+bool check_mcdi_ctl_stat(void)
+{
+	uint32_t clk_regs[] = {0x100010ac, 0x100010c8};
+	uint32_t clk_mask[] = {0x00028000, 0x00000018};
+	uint32_t tgt = target_mask(0, 0, true);
+	uint32_t m;
+	int i;
+
+	/* check clk status */
+	for (i = 0; i < ARRAY_SIZE(clk_regs); i++) {
+		if (mmio_read_32(clk_regs[i]) & clk_mask[i]) {
+			WARN("mcdi: clk check fail.\n");
+			return false;
+		}
+	}
+
+	/* check mcdi cmd handling */
+	m = mcdi_mbox_read(MCDI_MBOX_PAUSE_ACTION) | BIT(PAUSE_BIT);
+	mcdi_mbox_write(MCDI_MBOX_PAUSE_ACTION, m);
+
+	i = 500;
+	while (!mcdi_mbox_read(MCDI_MBOX_PAUSE_ACK) && --i > 0)
+		udelay(10);
+
+	m = mcdi_mbox_read(MCDI_MBOX_PAUSE_ACTION) & ~BIT(PAUSE_BIT);
+	mcdi_mbox_write(MCDI_MBOX_PAUSE_ACTION, m);
+
+	if (i == 0) {
+		WARN("mcdi: pause_action fail.\n");
+		return false;
+	}
+
+	/* check mcdi cmd handling */
+	if (mcdi_mbox_read(MCDI_MBOX_HP_CMD) ||
+			mcdi_mbox_read(MCDI_MBOX_HP_ACK)) {
+		WARN("mcdi: hp_cmd fail.\n");
+		return false;
+	}
+
+	mcdi_mbox_write(MCDI_MBOX_HP_CMD, tgt);
+
+	i = 500;
+	while ((mcdi_mbox_read(MCDI_MBOX_HP_ACK) & tgt) != tgt && --i > 0)
+		udelay(10);
+
+	mcdi_mbox_write(MCDI_MBOX_HP_CMD, 0);
+
+	if (i == 0) {
+		WARN("mcdi: hp_ack fail.\n");
+		return false;
+	}
+
+	return true;
+}
+
+void mcdi_init(void)
+{
+	mcdi_avail_cpu_mask_write(0x01); /* cpu0 default on */
+}
diff --git a/plat/mediatek/mt8183/drivers/mcdi/mtk_mcdi.h b/plat/mediatek/mt8183/drivers/mcdi/mtk_mcdi.h
new file mode 100644
index 0000000..9a40df1
--- /dev/null
+++ b/plat/mediatek/mt8183/drivers/mcdi/mtk_mcdi.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2019, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef __MTK_MCDI_H__
+#define __MTK_MCDI_H__
+
+#include <stdbool.h>
+
+void sspm_set_bootaddr(uint32_t bootaddr);
+void sspm_standbywfi_irq_enable(uint32_t cpu_idx);
+void sspm_cluster_pwr_off_notify(uint32_t cluster);
+void sspm_cluster_pwr_on_notify(uint32_t cluster);
+
+uint32_t mcdi_avail_cpu_mask_read(void);
+uint32_t mcdi_avail_cpu_mask_write(uint32_t mask);
+uint32_t mcdi_avail_cpu_mask_set(uint32_t mask);
+uint32_t mcdi_avail_cpu_mask_clr(uint32_t mask);
+uint32_t mcdi_cpu_cluster_pwr_stat_read(void);
+
+void mcdi_pause(void);
+void mcdi_unpause(void);
+void mcdi_pause_set(int cluster, int cpu_idx, bool on);
+void mcdi_pause_clr(int cluster, int cpu_idx, bool on);
+void mcdi_hotplug_set(int cluster, int cpu_idx, bool on);
+void mcdi_hotplug_clr(int cluster, int cpu_idx, bool on);
+void mcdi_hotplug_wait_ack(int cluster, int cpu_idx, bool on);
+
+bool check_mcdi_ctl_stat(void);
+void mcdi_init(void);
+
+#endif /* __MTK_MCDI_H__ */