mediatek: mt8192: add sys_cirq driver
1.add sys_cirq driver
2.add gic api for cirq
Change-Id: Ie6802d6ddcf7dde3412a050736dfdc85f97cb51b
diff --git a/plat/mediatek/mt8192/plat_mt_cirq.c b/plat/mediatek/mt8192/plat_mt_cirq.c
new file mode 100644
index 0000000..7fc0607
--- /dev/null
+++ b/plat/mediatek/mt8192/plat_mt_cirq.c
@@ -0,0 +1,494 @@
+/*
+ * Copyright (c) 2020, MediaTek Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <arch_helpers.h>
+#include <common/debug.h>
+#include <drivers/arm/gic_common.h>
+#include <drivers/console.h>
+#include <lib/mmio.h>
+
+#include <mt_gic_v3.h>
+#include <mtk_plat_common.h>
+#include <plat_mt_cirq.h>
+#include <platform_def.h>
+
+static struct cirq_events cirq_all_events = {
+ .spi_start = CIRQ_SPI_START
+};
+
+static inline void mt_cirq_write32(uint32_t val, uint32_t addr)
+{
+ mmio_write_32(addr + SYS_CIRQ_BASE, val);
+}
+
+static inline uint32_t mt_cirq_read32(uint32_t addr)
+{
+ return mmio_read_32(addr + SYS_CIRQ_BASE);
+}
+
+/*
+ * cirq_clone_flush_check_store:
+ * set 1 if we need to enable clone/flush value's check
+ */
+static int32_t cirq_clone_flush_check_val;
+
+/*
+ * cirq_pattern_clone_flush_check_show: set 1 if we need to do pattern test.
+ */
+static int32_t cirq_pattern_clone_flush_check_val;
+
+/*
+ * cirq_pattern_clone_flush_check_show: set 1 if we need to do pattern test.
+ */
+static int32_t cirq_pattern_list;
+
+/*
+ * mt_cirq_ack_all: Ack all the interrupt on SYS_CIRQ
+ */
+void mt_cirq_ack_all(void)
+{
+ unsigned int i;
+
+ for (i = 0U; i < CIRQ_CTRL_REG_NUM; i++) {
+ mt_cirq_write32(0xFFFFFFFF, CIRQ_ACK_BASE + (i * 4U));
+ }
+ /* make sure all cirq setting take effect before doing other things */
+ dmbsy();
+}
+
+/*
+ * mt_cirq_enable: Enable SYS_CIRQ
+ */
+void mt_cirq_enable(void)
+{
+ uint32_t st;
+
+ mt_cirq_ack_all();
+
+ st = mt_cirq_read32(CIRQ_CON);
+ st |= (CIRQ_CON_EN << CIRQ_CON_EN_BITS) |
+ (CIRQ_CON_EDGE_ONLY << CIRQ_CON_EDGE_ONLY_BITS);
+
+ mt_cirq_write32((st & CIRQ_CON_BITS_MASK), CIRQ_CON);
+}
+
+/*
+ * mt_cirq_disable: Disable SYS_CIRQ
+ */
+void mt_cirq_disable(void)
+{
+ uint32_t st;
+
+ st = mt_cirq_read32(CIRQ_CON);
+ st &= ~(CIRQ_CON_EN << CIRQ_CON_EN_BITS);
+
+ mt_cirq_write32((st & CIRQ_CON_BITS_MASK), CIRQ_CON);
+}
+
+/*
+ * mt_cirq_get_mask: Get the specified SYS_CIRQ mask
+ * @cirq_num: the SYS_CIRQ number to get
+ * @return:
+ * 1: this cirq is masked
+ * 0: this cirq is umasked
+ * 2: cirq num is out of range
+ */
+__attribute__((weak)) unsigned int mt_cirq_get_mask(uint32_t cirq_num)
+{
+ uint32_t st;
+ unsigned int val;
+
+ if (cirq_num >= CIRQ_IRQ_NUM) {
+ ERROR("[CIRQ] %s: invalid cirq %u\n", __func__, cirq_num);
+ return 2;
+ }
+
+ st = mt_cirq_read32((cirq_num / 32U) * 4U + CIRQ_MASK_BASE);
+ val = (st >> (cirq_num % 32U)) & 1U;
+ return val;
+}
+
+/*
+ * mt_cirq_mask_all: Mask all interrupts on SYS_CIRQ.
+ */
+void mt_cirq_mask_all(void)
+{
+ unsigned int i;
+
+ for (i = 0U; i < CIRQ_CTRL_REG_NUM; i++) {
+ mt_cirq_write32(0xFFFFFFFF, CIRQ_MASK_SET_BASE + (i * 4U));
+ }
+ /* make sure all cirq setting take effect before doing other things */
+ dmbsy();
+}
+
+/*
+ * mt_cirq_unmask_all: Unmask all interrupts on SYS_CIRQ.
+ */
+void mt_cirq_unmask_all(void)
+{
+ unsigned int i;
+
+ for (i = 0U; i < CIRQ_CTRL_REG_NUM; i++) {
+ mt_cirq_write32(0xFFFFFFFF, CIRQ_MASK_CLR_BASE + (i * 4U));
+ }
+ /* make sure all cirq setting take effect before doing other things */
+ dmbsy();
+}
+
+/*
+ * mt_cirq_mask: Mask the specified SYS_CIRQ.
+ * @cirq_num: the SYS_CIRQ number to mask
+ * @return:
+ * 0: mask success
+ * -1: cirq num is out of range
+ */
+static int mt_cirq_mask(uint32_t cirq_num)
+{
+ uint32_t bit = 1U << (cirq_num % 32U);
+
+ if (cirq_num >= CIRQ_IRQ_NUM) {
+ ERROR("[CIRQ] %s: invalid cirq %u\n", __func__, cirq_num);
+ return -1;
+ }
+
+ mt_cirq_write32(bit, (cirq_num / 32U) * 4U + CIRQ_MASK_SET_BASE);
+ return 0;
+}
+
+/*
+ * mt_cirq_unmask: Unmask the specified SYS_CIRQ.
+ * @cirq_num: the SYS_CIRQ number to unmask
+ * @return:
+ * 0: umask success
+ * -1: cirq num is out of range
+ */
+static int mt_cirq_unmask(uint32_t cirq_num)
+{
+ uint32_t bit = 1U << (cirq_num % 32U);
+
+ if (cirq_num >= CIRQ_IRQ_NUM) {
+ ERROR("[CIRQ] %s: invalid cirq %u\n", __func__, cirq_num);
+ return -1;
+ }
+
+ mt_cirq_write32(bit, (cirq_num / 32U) * 4U + CIRQ_MASK_CLR_BASE);
+ return 0;
+}
+
+/*
+ * mt_cirq_set_sens: Set the sensitivity for the specified SYS_CIRQ number.
+ * @cirq_num: the SYS_CIRQ number to set
+ * @sens: sensitivity to set
+ * @return:
+ * 0: set sens success
+ * -1: cirq num is out of range
+ */
+static int mt_cirq_set_sens(uint32_t cirq_num, uint32_t sens)
+{
+ uint32_t base;
+ uint32_t bit = 1U << (cirq_num % 32U);
+
+ if (cirq_num >= CIRQ_IRQ_NUM) {
+ ERROR("[CIRQ] %s: invalid cirq %u\n", __func__, cirq_num);
+ return -1;
+ }
+
+ if (sens == MT_CIRQ_EDGE_SENSITIVE) {
+ base = (cirq_num / 32U) * 4U + CIRQ_SENS_CLR_BASE;
+ } else if (sens == MT_CIRQ_LEVEL_SENSITIVE) {
+ base = (cirq_num / 32U) * 4U + CIRQ_SENS_SET_BASE;
+ } else {
+ ERROR("[CIRQ] set_sens invalid sen value %u\n", sens);
+ return -1;
+ }
+
+ mt_cirq_write32(bit, base);
+ return 0;
+}
+
+/*
+ * mt_cirq_get_sens: Get the specified SYS_CIRQ sensitivity
+ * @cirq_num: the SYS_CIRQ number to get
+ * @return:
+ * 1: this cirq is MT_LEVEL_SENSITIVE
+ * 0: this cirq is MT_EDGE_SENSITIVE
+ * 2: cirq num is out of range
+ */
+__attribute__((weak)) unsigned int mt_cirq_get_sens(uint32_t cirq_num)
+{
+ uint32_t st;
+ unsigned int val;
+
+ if (cirq_num >= CIRQ_IRQ_NUM) {
+ ERROR("[CIRQ] %s: invalid cirq %u\n", __func__, cirq_num);
+ return 2;
+ }
+
+ st = mt_cirq_read32((cirq_num / 32U) * 4U + CIRQ_SENS_BASE);
+ val = (st >> (cirq_num % 32U)) & 1U;
+ return val;
+}
+
+/*
+ * mt_cirq_set_pol: Set the polarity for the specified SYS_CIRQ number.
+ * @cirq_num: the SYS_CIRQ number to set
+ * @pol: polarity to set
+ * @return:
+ * 0: set pol success
+ * -1: cirq num is out of range
+ */
+static int mt_cirq_set_pol(uint32_t cirq_num, uint32_t pol)
+{
+ uint32_t base;
+ uint32_t bit = 1U << (cirq_num % 32U);
+
+ if (cirq_num >= CIRQ_IRQ_NUM) {
+ ERROR("[CIRQ] %s: invalid cirq %u\n", __func__, cirq_num);
+ return -1;
+ }
+
+ if (pol == MT_CIRQ_POL_NEG) {
+ base = (cirq_num / 32U) * 4U + CIRQ_POL_CLR_BASE;
+ } else if (pol == MT_CIRQ_POL_POS) {
+ base = (cirq_num / 32U) * 4U + CIRQ_POL_SET_BASE;
+ } else {
+ ERROR("[CIRQ] set_pol invalid polarity value %u\n", pol);
+ return -1;
+ }
+
+ mt_cirq_write32(bit, base);
+ return 0;
+}
+
+/*
+ * mt_cirq_get_pol: Get the specified SYS_CIRQ polarity
+ * @cirq_num: the SYS_CIRQ number to get
+ * @return:
+ * 1: this cirq is MT_CIRQ_POL_POS
+ * 0: this cirq is MT_CIRQ_POL_NEG
+ * 2: cirq num is out of range
+ */
+__attribute__((weak)) unsigned int mt_cirq_get_pol(uint32_t cirq_num)
+{
+ uint32_t st;
+ unsigned int val;
+
+ if (cirq_num >= CIRQ_IRQ_NUM) {
+ ERROR("[CIRQ] %s: invalid cirq %u\n", __func__, cirq_num);
+ return 2;
+ }
+
+ st = mt_cirq_read32((cirq_num / 32U) * 4U + CIRQ_POL_BASE);
+ val = (st >> (cirq_num % 32U)) & 1U;
+ return val;
+}
+
+/*
+ * mt_cirq_get_pending: Get the specified SYS_CIRQ pending
+ * @cirq_num: the SYS_CIRQ number to get
+ * @return:
+ * 1: this cirq is pending
+ * 0: this cirq is not pending
+ * 2: cirq num is out of range
+ */
+static unsigned int mt_cirq_get_pending(uint32_t cirq_num)
+{
+ uint32_t st;
+ unsigned int val;
+
+ if (cirq_num >= CIRQ_IRQ_NUM) {
+ ERROR("[CIRQ] %s: invalid cirq %u\n", __func__, cirq_num);
+ return 2;
+ }
+
+ st = mt_cirq_read32((cirq_num / 32U) * 4U + CIRQ_STA_BASE);
+ val = (st >> (cirq_num % 32U)) & 1U;
+ return val;
+}
+
+/*
+ * mt_cirq_clone_pol: Copy the polarity setting from GIC to SYS_CIRQ
+ */
+void mt_cirq_clone_pol(void)
+{
+ uint32_t cirq_num;
+
+ for (cirq_num = 0U; cirq_num < CIRQ_IRQ_NUM; cirq_num++) {
+ mt_cirq_set_pol(cirq_num, MT_CIRQ_POL_POS);
+ }
+}
+
+/*
+ * mt_cirq_clone_sens: Copy the sensitivity setting from GIC to SYS_CIRQ
+ */
+void mt_cirq_clone_sens(void)
+{
+ uint32_t cirq_num, irq_num;
+ uint32_t st, val;
+
+ for (cirq_num = 0U; cirq_num < CIRQ_IRQ_NUM; cirq_num++) {
+ irq_num = CIRQ_TO_IRQ_NUM(cirq_num);
+
+ if ((cirq_num == 0U) || (irq_num % 16U == 0U)) {
+ st = mmio_read_32(BASE_GICD_BASE + GICD_ICFGR +
+ (irq_num / 16U * 4U));
+ }
+
+ val = (st >> ((irq_num % 16U) * 2U)) & 0x2U;
+
+ if (val) {
+ mt_cirq_set_sens(cirq_num, MT_CIRQ_EDGE_SENSITIVE);
+ } else {
+ mt_cirq_set_sens(cirq_num, MT_CIRQ_LEVEL_SENSITIVE);
+ }
+ }
+}
+
+/*
+ * mt_cirq_clone_mask: Copy the mask setting from GIC to SYS_CIRQ
+ */
+void mt_cirq_clone_mask(void)
+{
+ uint32_t cirq_num, irq_num;
+ uint32_t st, val;
+
+ for (cirq_num = 0U; cirq_num < CIRQ_IRQ_NUM; cirq_num++) {
+ irq_num = CIRQ_TO_IRQ_NUM(cirq_num);
+
+ if ((cirq_num == 0U) || (irq_num % 32U == 0U)) {
+ st = mmio_read_32(BASE_GICD_BASE +
+ GICD_ISENABLER + (irq_num / 32U * 4U));
+ }
+
+ val = (st >> (irq_num % 32)) & 1U;
+
+ if (val) {
+ mt_cirq_unmask(cirq_num);
+ } else {
+ mt_cirq_mask(cirq_num);
+ }
+ }
+}
+
+/*
+ * mt_cirq_clone_gic: Copy the setting from GIC to SYS_CIRQ
+ */
+void mt_cirq_clone_gic(void)
+{
+ mt_cirq_clone_sens();
+ mt_cirq_clone_mask();
+}
+
+/*
+ * mt_cirq_disable: Flush interrupt from SYS_CIRQ to GIC
+ */
+void mt_cirq_flush(void)
+{
+ unsigned int i;
+ unsigned char cirq_p_val = 0U;
+ unsigned char irq_p_val = 0U;
+ uint32_t irq_p = 0U;
+ unsigned char pass = 1U;
+ uint32_t first_cirq_found = 0U;
+ uint32_t first_flushed_cirq;
+ uint32_t first_irq_flushedto;
+ uint32_t last_fluashed_cirq;
+ uint32_t last_irq_flushedto;
+
+ if (cirq_pattern_clone_flush_check_val == 1U) {
+ if (cirq_pattern_list < CIRQ_IRQ_NUM) {
+ mt_cirq_unmask(cirq_pattern_list);
+ mt_cirq_set_sens(cirq_pattern_list,
+ MT_CIRQ_EDGE_SENSITIVE);
+ mt_cirq_set_pol(cirq_pattern_list, MT_CIRQ_POL_NEG);
+ mt_cirq_set_pol(cirq_pattern_list, MT_CIRQ_POL_POS);
+ mt_cirq_set_pol(cirq_pattern_list, MT_CIRQ_POL_NEG);
+ } else {
+ ERROR("[CIRQ] no pattern to test,");
+ ERROR("input pattern first\n");
+ }
+ ERROR("[CIRQ] cirq_pattern %u, cirq_p %u,",
+ cirq_pattern_list,
+ mt_cirq_get_pending(cirq_pattern_list));
+ ERROR("cirq_s %u, cirq_con 0x%x\n",
+ mt_cirq_get_sens(cirq_pattern_list),
+ mt_cirq_read32(CIRQ_CON));
+ }
+
+ mt_cirq_unmask_all();
+
+ for (i = 0U; i < CIRQ_IRQ_NUM; i++) {
+ cirq_p_val = mt_cirq_get_pending(i);
+ if (cirq_p_val) {
+ mt_irq_set_pending(CIRQ_TO_IRQ_NUM(i));
+ }
+
+ if (cirq_clone_flush_check_val == 1U) {
+ if (cirq_p_val == 0U) {
+ continue;
+ }
+ irq_p = CIRQ_TO_IRQ_NUM(i);
+ irq_p_val = mt_irq_get_pending(irq_p);
+ if (cirq_p_val != irq_p_val) {
+ ERROR("[CIRQ] CIRQ Flush Failed ");
+ ERROR("%u(cirq %d)!= %u(gic %d)\n",
+ cirq_p_val, i, irq_p_val,
+ CIRQ_TO_IRQ_NUM(i));
+ pass = 0;
+ } else {
+ ERROR("[CIRQ] CIRQ Flush Pass ");
+ ERROR("%u(cirq %d) = %u(gic %d)\n",
+ cirq_p_val, i, irq_p_val,
+ CIRQ_TO_IRQ_NUM(i));
+ }
+ if (!first_cirq_found) {
+ first_flushed_cirq = i;
+ first_irq_flushedto = irq_p;
+ first_cirq_found = 1U;
+ }
+ last_fluashed_cirq = i;
+ last_irq_flushedto = irq_p;
+ }
+ }
+
+ if (cirq_clone_flush_check_val == 1U) {
+ if (first_cirq_found) {
+ ERROR("[CIRQ] The first flush : CIRQ%u to IRQ%u\n",
+ first_flushed_cirq, first_irq_flushedto);
+ ERROR("[CIRQ] The last flush : CIRQ%u to IRQ%u\n",
+ last_fluashed_cirq, last_irq_flushedto);
+ } else {
+ ERROR("[CIRQ] There are no pending ");
+ ERROR("interrupt in CIRQ\n");
+ ERROR("[CIRQ] so no flush operation happened\n");
+ }
+ ERROR("[CIRQ] The Flush Max Range : CIRQ");
+ ERROR("%d to IRQ%d ~ CIRQ%d to IRQ%d\n", 0U,
+ CIRQ_TO_IRQ_NUM(0U), CIRQ_IRQ_NUM - 1U,
+ CIRQ_TO_IRQ_NUM(CIRQ_IRQ_NUM - 1U));
+ ERROR("[CIRQ] Flush Check %s, Confirm:SPI_START_OFFSET:%d\n",
+ pass == 1 ? "Pass" : "Failed", CIRQ_SPI_START);
+ }
+ mt_cirq_mask_all();
+ mt_cirq_ack_all();
+}
+
+void mt_cirq_sw_reset(void)
+{
+ uint32_t st;
+
+ st = mt_cirq_read32(CIRQ_CON);
+ st |= (CIRQ_SW_RESET << CIRQ_CON_SW_RST_BITS);
+
+ mt_cirq_write32(st, CIRQ_CON);
+}
+
+void set_wakeup_sources(uint32_t *list, uint32_t num_of_events)
+{
+ cirq_all_events.num_of_events = num_of_events;
+ cirq_all_events.wakeup_events = list;
+}