From 102b0d2daa97dae68d3eed54d8fe37a9cc38a892 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 28 Apr 2024 11:13:47 +0200
Subject: Adding upstream version 2.8.0+dfsg.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 drivers/marvell/secure_dfx_access/misc_dfx.c | 123 +++++++++++++++++++++++++++
 1 file changed, 123 insertions(+)
 create mode 100644 drivers/marvell/secure_dfx_access/misc_dfx.c

(limited to 'drivers/marvell/secure_dfx_access/misc_dfx.c')

diff --git a/drivers/marvell/secure_dfx_access/misc_dfx.c b/drivers/marvell/secure_dfx_access/misc_dfx.c
new file mode 100644
index 0000000..189105f
--- /dev/null
+++ b/drivers/marvell/secure_dfx_access/misc_dfx.c
@@ -0,0 +1,123 @@
+/*
+ * Copyright (C) 2021 Marvell International Ltd.
+ *
+ * SPDX-License-Identifier:     BSD-3-Clause
+ * https://spdx.org/licenses
+ */
+
+#include <common/debug.h>
+#include <lib/mmio.h>
+#include "dfx.h"
+#include <mvebu_def.h>
+#include <mvebu.h>
+#include <errno.h>
+
+/* #define DEBUG_DFX */
+#ifdef DEBUG_DFX
+#define debug(format...) NOTICE(format)
+#else
+#define debug(format, arg...)
+#endif
+
+#define SAR_BASE			(MVEBU_REGS_BASE + 0x6F8200)
+#define SAR_SIZE			0x4
+#define AP_DEV_ID_STATUS_REG		(MVEBU_REGS_BASE + 0x6F8240)
+#define JTAG_DEV_ID_STATUS_REG		(MVEBU_REGS_BASE + 0x6F8244)
+#define EFUSE_CTRL			(MVEBU_REGS_BASE + 0x6F8008)
+#define EFUSE_LD_BASE			(MVEBU_REGS_BASE + 0x6F8F00)
+#define EFUSE_LD_SIZE			0x1C
+#define EFUSE_HD_BASE			(MVEBU_REGS_BASE + 0x6F9000)
+#define EFUSE_HD_SIZE			0x3F8
+
+/* AP806 CPU DFS register mapping*/
+#define AP806_CA72MP2_0_PLL_CR_0_BASE		(MVEBU_REGS_BASE + 0x6F8278)
+#define AP806_CA72MP2_0_PLL_CR_1_BASE		(MVEBU_REGS_BASE + 0x6F8280)
+#define AP806_CA72MP2_0_PLL_CR_2_BASE		(MVEBU_REGS_BASE + 0x6F8284)
+#define AP806_CA72MP2_0_PLL_SR_BASE		(MVEBU_REGS_BASE + 0x6F8C94)
+
+/* AP807 CPU DFS register mapping */
+#define AP807_DEVICE_GENERAL_CR_10_BASE		(MVEBU_REGS_BASE + 0x6F8278)
+#define AP807_DEVICE_GENERAL_CR_11_BASE		(MVEBU_REGS_BASE + 0x6F827C)
+#define AP807_DEVICE_GENERAL_STATUS_6_BASE	(MVEBU_REGS_BASE + 0x6F8C98)
+
+#ifdef MVEBU_SOC_AP807
+ #define CLUSTER_OFFSET		0x8
+ #define CLK_DIVIDER_REG	AP807_DEVICE_GENERAL_CR_10_BASE
+ #define CLK_FORCE_REG		AP807_DEVICE_GENERAL_CR_11_BASE
+ #define CLK_RATIO_REG		AP807_DEVICE_GENERAL_CR_11_BASE
+ #define CLK_RATIO_STATE_REG	AP807_DEVICE_GENERAL_STATUS_6_BASE
+#else
+ #define CLUSTER_OFFSET		0x14
+ #define CLK_DIVIDER_REG		AP806_CA72MP2_0_PLL_CR_0_BASE
+ #define CLK_FORCE_REG		AP806_CA72MP2_0_PLL_CR_1_BASE
+ #define CLK_RATIO_REG		AP806_CA72MP2_0_PLL_CR_2_BASE
+ #define CLK_RATIO_STATE_REG	AP806_CA72MP2_0_PLL_SR_BASE
+#endif /* MVEBU_SOC_AP807 */
+
+static _Bool is_valid(u_register_t addr)
+{
+	switch (addr) {
+	case AP_DEV_ID_STATUS_REG:
+	case JTAG_DEV_ID_STATUS_REG:
+	case SAR_BASE ... (SAR_BASE + SAR_SIZE):
+	case EFUSE_LD_BASE ... (EFUSE_LD_BASE + EFUSE_LD_SIZE):
+	case EFUSE_HD_BASE ... (EFUSE_HD_BASE + EFUSE_HD_SIZE):
+	case EFUSE_CTRL:
+	/* cpu-clk related registers */
+	case CLK_DIVIDER_REG:
+	case CLK_DIVIDER_REG + CLUSTER_OFFSET:
+	case CLK_FORCE_REG:
+	case CLK_FORCE_REG + CLUSTER_OFFSET:
+#ifndef MVEBU_SOC_AP807
+	case CLK_RATIO_REG:
+	case CLK_RATIO_REG + CLUSTER_OFFSET:
+#endif
+	case CLK_RATIO_STATE_REG:
+	case CLK_RATIO_STATE_REG + CLUSTER_OFFSET:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static int armada_dfx_sread(u_register_t *read, u_register_t addr)
+{
+	if (!is_valid(addr))
+		return -EINVAL;
+
+	*read = mmio_read_32(addr);
+
+	return 0;
+}
+
+static int armada_dfx_swrite(u_register_t addr, u_register_t val)
+{
+	if (!is_valid(addr))
+		return -EINVAL;
+
+	mmio_write_32(addr, val);
+
+	return 0;
+}
+
+int mvebu_dfx_misc_handle(u_register_t func, u_register_t *read,
+			  u_register_t addr, u_register_t val)
+{
+	debug_enter();
+
+	debug("func %ld, addr 0x%lx, val 0x%lx\n", func, addr, val);
+
+	switch (func) {
+	case MV_SIP_DFX_SREAD:
+		return armada_dfx_sread(read, addr);
+	case MV_SIP_DFX_SWRITE:
+		return armada_dfx_swrite(addr, val);
+	default:
+		ERROR("unsupported dfx misc sub-func\n");
+		return -EINVAL;
+	}
+
+	debug_exit();
+
+	return 0;
+}
-- 
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