Tegra: support for native GICv2 drivers

This patch converts Tegra platforms to support native
GICv2 drivers. This involves removes Tegra's GIC driver
port platforms to use interrupt_props

Change-Id: I83d8a690ff276dd97928dc60824a4fd36999bb30
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

plat/nvidia/tegra/common/tegra_common.mk

@@ -22,12 +22,12 @@ TEGRA_GICv2_SOURCES	:=	drivers/arm/gic/common/gic_common.c		\
 BL31_SOURCES		+=	drivers/console/aarch64/console.S		\
 				drivers/delay_timer/delay_timer.c		\
 				drivers/ti/uart/aarch64/16550_console.S		\
+				${TEGRA_GICv2_SOURCES}				\
 				${COMMON_DIR}/aarch64/tegra_helpers.S		\
 				${COMMON_DIR}/drivers/pmc/pmc.c			\
 				${COMMON_DIR}/tegra_bl31_setup.c		\
 				${COMMON_DIR}/tegra_delay_timer.c		\
 				${COMMON_DIR}/tegra_fiq_glue.c			\
-				${COMMON_DIR}/tegra_gic.c			\
 				${COMMON_DIR}/tegra_platform.c			\
 				${COMMON_DIR}/tegra_pm.c			\
 				${COMMON_DIR}/tegra_sip_calls.c			\

plat/nvidia/tegra/common/tegra_gic.c

-/*
- * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
- *
- * SPDX-License-Identifier: BSD-3-Clause
- */
-
-#include <arch_helpers.h>
-#include <assert.h>
-#include <bl_common.h>
-#include <debug.h>
-#include <interrupt_mgmt.h>
-#include <platform.h>
-#include <stdint.h>
-#include <tegra_def.h>
-#include <tegra_private.h>
-
-/* Value used to initialize Non-Secure IRQ priorities four at a time */
-#define GICD_IPRIORITYR_DEF_VAL \
-	(GIC_HIGHEST_NS_PRIORITY | \
-	(GIC_HIGHEST_NS_PRIORITY << 8) | \
-	(GIC_HIGHEST_NS_PRIORITY << 16) | \
-	(GIC_HIGHEST_NS_PRIORITY << 24))
-
-static const irq_sec_cfg_t *g_irq_sec_ptr;
-static uint32_t g_num_irqs;
-
-/*******************************************************************************
- * Place the cpu interface in a state where it can never make a cpu exit wfi as
- * as result of an asserted interrupt. This is critical for powering down a cpu
- ******************************************************************************/
-void tegra_gic_cpuif_deactivate(void)
-{
-	uint32_t val;
-
-	/* Disable secure, non-secure interrupts and disable their bypass */
-	val = gicc_read_ctlr(TEGRA_GICC_BASE);
-	val &= ~(ENABLE_GRP0 | ENABLE_GRP1);
-	val |= FIQ_BYP_DIS_GRP1 | FIQ_BYP_DIS_GRP0;
-	val |= IRQ_BYP_DIS_GRP0 | IRQ_BYP_DIS_GRP1;
-	gicc_write_ctlr(TEGRA_GICC_BASE, val);
-}
-
-/*******************************************************************************
- * Enable secure interrupts and set the priority mask register to allow all
- * interrupts to trickle in.
- ******************************************************************************/
-static void tegra_gic_cpuif_setup(uint32_t gicc_base)
-{
-	uint32_t val;
-
-	val = ENABLE_GRP0 | ENABLE_GRP1 | FIQ_EN | FIQ_BYP_DIS_GRP0;
-	val |= IRQ_BYP_DIS_GRP0 | FIQ_BYP_DIS_GRP1 | IRQ_BYP_DIS_GRP1;
-
-	gicc_write_ctlr(gicc_base, val);
-	gicc_write_pmr(gicc_base, GIC_PRI_MASK);
-}
-
-/*******************************************************************************
- * Per cpu gic distributor setup which will be done by all cpus after a cold
- * boot/hotplug. This marks out the secure interrupts & enables them.
- ******************************************************************************/
-static void tegra_gic_pcpu_distif_setup(uint32_t gicd_base)
-{
-	uint32_t index, sec_ppi_sgi_mask = 0;
-
-	assert(gicd_base != 0U);
-
-	/* Setup PPI priorities doing four at a time */
-	for (index = 0U; index < 32U; index += 4U) {
-		gicd_write_ipriorityr(gicd_base, index,
-				GICD_IPRIORITYR_DEF_VAL);
-	}
-
-	/*
-	 * Invert the bitmask to create a mask for non-secure PPIs and
-	 * SGIs. Program the GICD_IGROUPR0 with this bit mask. This write will
-	 * update the GICR_IGROUPR0 as well in case we are running on a GICv3
-	 * system. This is critical if GICD_CTLR.ARE_NS=1.
-	 */
-	gicd_write_igroupr(gicd_base, 0, ~sec_ppi_sgi_mask);
-}
-
-/*******************************************************************************
- * Global gic distributor setup which will be done by the primary cpu after a
- * cold boot. It marks out the non secure SPIs, PPIs & SGIs and enables them.
- * It then enables the secure GIC distributor interface.
- ******************************************************************************/
-static void tegra_gic_distif_setup(uint32_t gicd_base)
-{
-	uint32_t index, num_ints, irq_num;
-	uint8_t target_cpus;
-	uint32_t val;
-
-	/*
-	 * Mark out non-secure interrupts. Calculate number of
-	 * IGROUPR registers to consider. Will be equal to the
-	 * number of IT_LINES
-	 */
-	num_ints = gicd_read_typer(gicd_base) & IT_LINES_NO_MASK;
-	num_ints = (num_ints + 1U) << 5;
-	for (index = MIN_SPI_ID; index < num_ints; index += 32U) {
-		gicd_write_igroupr(gicd_base, index, 0xFFFFFFFFU);
-	}
-
-	/* Setup SPI priorities doing four at a time */
-	for (index = MIN_SPI_ID; index < num_ints; index += 4U) {
-		gicd_write_ipriorityr(gicd_base, index,
-				GICD_IPRIORITYR_DEF_VAL);
-	}
-
-	/* Configure SPI secure interrupts now */
-	if (g_irq_sec_ptr != NULL) {
-
-		for (index = 0U; index < g_num_irqs; index++) {
-			irq_num = g_irq_sec_ptr[index].irq;
-			target_cpus = (uint8_t)g_irq_sec_ptr[index].target_cpus;
-
-			if (irq_num >= MIN_SPI_ID) {
-
-				/* Configure as a secure interrupt */
-				gicd_clr_igroupr(gicd_base, irq_num);
-
-				/* Configure SPI priority */
-				mmio_write_8((uint64_t)gicd_base +
-					(uint64_t)GICD_IPRIORITYR +
-					(uint64_t)irq_num,
-					GIC_HIGHEST_SEC_PRIORITY &
-					GIC_PRI_MASK);
-
-				/* Configure as level triggered */
-				val = gicd_read_icfgr(gicd_base, irq_num);
-				val |= (3U << ((irq_num & 0xFU) << 1U));
-				gicd_write_icfgr(gicd_base, irq_num, val);
-
-				/* Route SPI to the target CPUs */
-				gicd_set_itargetsr(gicd_base, irq_num,
-					target_cpus);
-
-				/* Enable this interrupt */
-				gicd_set_isenabler(gicd_base, irq_num);
-			}
-		}
-	}
-
-	/*
-	 * Configure the SGI and PPI. This is done in a separated function
-	 * because each CPU is responsible for initializing its own private
-	 * interrupts.
-	 */
-	tegra_gic_pcpu_distif_setup(gicd_base);
-
-	/* enable distributor */
-	gicd_write_ctlr(gicd_base, ENABLE_GRP0 | ENABLE_GRP1);
-}
-
-void tegra_gic_setup(const irq_sec_cfg_t *irq_sec_ptr, uint32_t num_irqs)
-{
-	g_irq_sec_ptr = irq_sec_ptr;
-	g_num_irqs = num_irqs;
-
-	tegra_gic_cpuif_setup(TEGRA_GICC_BASE);
-	tegra_gic_distif_setup(TEGRA_GICD_BASE);
-}
-
-/*******************************************************************************
- * An ARM processor signals interrupt exceptions through the IRQ and FIQ pins.
- * The interrupt controller knows which pin/line it uses to signal a type of
- * interrupt. This function provides a common implementation of
- * plat_interrupt_type_to_line() in an ARM GIC environment for optional re-use
- * across platforms. It lets the interrupt management framework determine
- * for a type of interrupt and security state, which line should be used in the
- * SCR_EL3 to control its routing to EL3. The interrupt line is represented as
- * the bit position of the IRQ or FIQ bit in the SCR_EL3.
- ******************************************************************************/
-static uint32_t tegra_gic_interrupt_type_to_line(uint32_t type,
-				uint32_t security_state)
-{
-	assert((type == INTR_TYPE_S_EL1) ||
-	       (type == INTR_TYPE_EL3) ||
-	       (type == INTR_TYPE_NS));
-
-	assert(sec_state_is_valid(security_state));
-
-	/*
-	 * We ignore the security state parameter under the assumption that
-	 * both normal and secure worlds are using ARM GICv2. This parameter
-	 * will be used when the secure world starts using GICv3.
-	 */
-	return gicv2_interrupt_type_to_line(TEGRA_GICC_BASE, type);
-}
-
-/*******************************************************************************
- * This function returns the type of the highest priority pending interrupt at
- * the GIC cpu interface. INTR_TYPE_INVAL is returned when there is no
- * interrupt pending.
- ******************************************************************************/
-static uint32_t tegra_gic_get_pending_interrupt_type(void)
-{
-	uint32_t id;
-	uint32_t index;
-	uint32_t ret = INTR_TYPE_NS;
-
-	id = gicc_read_hppir(TEGRA_GICC_BASE) & INT_ID_MASK;
-
-	/* get the interrupt type */
-	if (id < 1022U) {
-		for (index = 0U; index < g_num_irqs; index++) {
-			if (id == g_irq_sec_ptr[index].irq) {
-				ret = g_irq_sec_ptr[index].type;
-				break;
-			}
-		}
-	} else {
-		 if (id == GIC_SPURIOUS_INTERRUPT) {
-			ret = INTR_TYPE_INVAL;
-		}
-	}
-
-	return ret;
-}
-
-/*******************************************************************************
- * This function returns the id of the highest priority pending interrupt at
- * the GIC cpu interface. INTR_ID_UNAVAILABLE is returned when there is no
- * interrupt pending.
- ******************************************************************************/
-static uint32_t tegra_gic_get_pending_interrupt_id(void)
-{
-	uint32_t id, ret;
-
-	id = gicc_read_hppir(TEGRA_GICC_BASE) & INT_ID_MASK;
-
-	if (id < 1022U) {
-		ret = id;
-	} else if (id == 1023U) {
-		ret = 0xFFFFFFFFU; /* INTR_ID_UNAVAILABLE */
-	} else {
-		/*
-		 * Find out which non-secure interrupt it is under the assumption that
-		 * the GICC_CTLR.AckCtl bit is 0.
-		 */
-		ret = gicc_read_ahppir(TEGRA_GICC_BASE) & INT_ID_MASK;
-	}
-
-	return ret;
-}
-
-/*******************************************************************************
- * This functions reads the GIC cpu interface Interrupt Acknowledge register
- * to start handling the pending interrupt. It returns the contents of the IAR.
- ******************************************************************************/
-static uint32_t tegra_gic_acknowledge_interrupt(void)
-{
-	return gicc_read_IAR(TEGRA_GICC_BASE);
-}
-
-/*******************************************************************************
- * This functions writes the GIC cpu interface End Of Interrupt register with
- * the passed value to finish handling the active interrupt
- ******************************************************************************/
-static void tegra_gic_end_of_interrupt(uint32_t id)
-{
-	gicc_write_EOIR(TEGRA_GICC_BASE, id);
-}
-
-/*******************************************************************************
- * This function returns the type of the interrupt id depending upon the group
- * this interrupt has been configured under by the interrupt controller i.e.
- * group0 or group1.
- ******************************************************************************/
-static uint32_t tegra_gic_get_interrupt_type(uint32_t id)
-{
-	uint32_t group;
-	uint32_t index;
-	uint32_t ret = INTR_TYPE_NS;
-
-	group = gicd_get_igroupr(TEGRA_GICD_BASE, id);
-
-	/* get the interrupt type */
-	if (group == GRP0) {
-		for (index = 0U; index < g_num_irqs; index++) {
-			if (id == g_irq_sec_ptr[index].irq) {
-				ret = g_irq_sec_ptr[index].type;
-				break;
-			}
-		}
-	}
-
-	return ret;
-}
-
-uint32_t plat_ic_get_pending_interrupt_id(void)
-{
-	return tegra_gic_get_pending_interrupt_id();
-}
-
-uint32_t plat_ic_get_pending_interrupt_type(void)
-{
-	return tegra_gic_get_pending_interrupt_type();
-}
-
-uint32_t plat_ic_acknowledge_interrupt(void)
-{
-	return tegra_gic_acknowledge_interrupt();
-}
-
-uint32_t plat_ic_get_interrupt_type(uint32_t id)
-{
-	return tegra_gic_get_interrupt_type(id);
-}
-
-void plat_ic_end_of_interrupt(uint32_t id)
-{
-	tegra_gic_end_of_interrupt(id);
-}
-
-uint32_t plat_interrupt_type_to_line(uint32_t type,
-				uint32_t security_state)
-{
-	return tegra_gic_interrupt_type_to_line(type, security_state);
-}

plat/nvidia/tegra/common/tegra_gicv2.c

@@ -15,7 +15,8 @@
 /******************************************************************************
  * Tegra common helper to setup the GICv2 driver data.
  *****************************************************************************/
-void tegra_gic_setup(tegra_gic_cfg_t *cfg)
+void tegra_gic_setup(const interrupt_prop_t *interrupt_props,
+		     unsigned int interrupt_props_num)
 {
 	/*
 	 * Tegra GIC configuration settings
@@ -27,8 +28,8 @@ void tegra_gic_setup(tegra_gic_cfg_t *cfg)
 	 */
 	tegra_gic_data.gicd_base = TEGRA_GICD_BASE;
 	tegra_gic_data.gicc_base = TEGRA_GICC_BASE;
-	tegra_gic_data.g0_interrupt_num = cfg->g0_int_num;
-	tegra_gic_data.g0_interrupt_array = cfg->g0_int_array;
+	tegra_gic_data.interrupt_props = interrupt_props;
+	tegra_gic_data.interrupt_props_num = interrupt_props_num;
 	gicv2_driver_init(&tegra_gic_data);
 }
 

plat/nvidia/tegra/include/drivers/tegra_gic.h

+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef __TEGRA_GIC_H__
+#define __TEGRA_GIC_H__
+
+#include <interrupt_props.h>
+
+/*******************************************************************************
+ * Per-CPU struct describing FIQ state to be stored
+ ******************************************************************************/
+typedef struct pcpu_fiq_state {
+	uint64_t elr_el3;
+	uint64_t spsr_el3;
+} pcpu_fiq_state_t;
+
+/*******************************************************************************
+ * Fucntion declarations
+ ******************************************************************************/
+void tegra_gic_cpuif_deactivate(void);
+void tegra_gic_init(void);
+void tegra_gic_pcpu_init(void);
+void tegra_gic_setup(const interrupt_prop_t *interrupt_props,
+		     unsigned int interrupt_props_num);
+
+#endif /* __TEGRA_GIC_H__ */

plat/nvidia/tegra/include/plat_macros.S

@@ -7,6 +7,7 @@
 #ifndef PLAT_MACROS_S
 #define PLAT_MACROS_S
 
+#include <gicv2.h>
 #include <tegra_def.h>
 
 .section .rodata.gic_reg_name, "aS"

plat/nvidia/tegra/include/tegra_private.h

@@ -8,8 +8,10 @@
 #define TEGRA_PRIVATE_H
 
 #include <arch.h>
+#include <arch_helpers.h>
 #include <platform_def.h>
 #include <psci.h>
+#include <tegra_gic.h>
 #include <xlat_tables_v2.h>
 
 /*******************************************************************************
@@ -30,26 +32,6 @@ typedef struct plat_params_from_bl2 {
 	int uart_id;
 } plat_params_from_bl2_t;
 
-/*******************************************************************************
- * Per-CPU struct describing FIQ state to be stored
- ******************************************************************************/
-typedef struct pcpu_fiq_state {
-	uint64_t elr_el3;
-	uint64_t spsr_el3;
-} pcpu_fiq_state_t;
-
-/*******************************************************************************
- * Struct describing per-FIQ configuration settings
- ******************************************************************************/
-typedef struct irq_sec_cfg {
-	/* IRQ number */
-	unsigned int irq;
-	/* Target CPUs servicing this interrupt */
-	unsigned int target_cpus;
-	/* type = INTR_TYPE_S_EL1 or INTR_TYPE_EL3 */
-	uint32_t type;
-} irq_sec_cfg_t;
-
 /*******************************************************************************
  * Struct describing parameters passed to bl31
  ******************************************************************************/
@@ -82,10 +64,6 @@ void tegra_fiq_handler_setup(void);
 int tegra_fiq_get_intr_context(void);
 void tegra_fiq_set_ns_entrypoint(uint64_t entrypoint);
 
-/* Declarations for tegra_gic.c */
-void tegra_gic_cpuif_deactivate(void);
-void tegra_gic_setup(const irq_sec_cfg_t *irq_sec_ptr, uint32_t num_irqs);
-
 /* Declarations for tegra_security.c */
 void tegra_security_setup(void);
 void tegra_security_setup_videomem(uintptr_t base, uint64_t size);

plat/nvidia/tegra/soc/t132/platform_t132.mk

 #
-# Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+# Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
 #
 # SPDX-License-Identifier: BSD-3-Clause
 #

plat/nvidia/tegra/soc/t186/plat_setup.c

 /*
- * Copyright (c) 2015-2016, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -14,7 +14,10 @@
 #include <cortex_a57.h>
 #include <debug.h>
 #include <denver.h>
+#include <gic_common.h>
+#include <gicv2.h>
 #include <interrupt_mgmt.h>
+#include <interrupt_props.h>
 #include <mce.h>
 #include <platform.h>
 #include <tegra_def.h>
@@ -185,17 +188,11 @@ void plat_early_platform_setup(void)
 }
 
 /* Secure IRQs for Tegra186 */
-static const irq_sec_cfg_t tegra186_sec_irqs[] = {
-	{
-		TEGRA186_TOP_WDT_IRQ,
-		TEGRA186_SEC_IRQ_TARGET_MASK,
-		INTR_TYPE_EL3,
-	},
-	{
-		TEGRA186_AON_WDT_IRQ,
-		TEGRA186_SEC_IRQ_TARGET_MASK,
-		INTR_TYPE_EL3,
-	},
+static const interrupt_prop_t tegra186_interrupt_props[] = {
+	INTR_PROP_DESC(TEGRA186_TOP_WDT_IRQ, GIC_HIGHEST_SEC_PRIORITY,
+			GICV2_INTR_GROUP0, GIC_INTR_CFG_EDGE),
+	INTR_PROP_DESC(TEGRA186_AON_WDT_IRQ, GIC_HIGHEST_SEC_PRIORITY,
+			GICV2_INTR_GROUP0, GIC_INTR_CFG_EDGE)
 };
 
 /*******************************************************************************
@@ -203,14 +200,13 @@ static const irq_sec_cfg_t tegra186_sec_irqs[] = {
  ******************************************************************************/
 void plat_gic_setup(void)
 {
-	tegra_gic_setup(tegra186_sec_irqs,
-		sizeof(tegra186_sec_irqs) / sizeof(tegra186_sec_irqs[0]));
+	tegra_gic_setup(tegra186_interrupt_props, ARRAY_SIZE(tegra186_interrupt_props));
 
 	/*
 	 * Initialize the FIQ handler only if the platform supports any
 	 * FIQ interrupt sources.
 	 */
-	if (sizeof(tegra186_sec_irqs) > 0)
+	if (sizeof(tegra186_interrupt_props) > 0)
 		tegra_fiq_handler_setup();
 }
 

plat/nvidia/tegra/soc/t210/platform_t210.mk

 #
-# Copyright (c) 2015-2017, ARM Limited and Contributors. All rights reserved.
+# Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
 #
 # SPDX-License-Identifier: BSD-3-Clause
 #