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Tegra: support for native GICv2 drivers

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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>
This commit is contained in:
Varun Wadekar 2018-10-19 11:42:28 -07:00
parent ce6107c747
commit 80c50eeaf9
9 changed files with 54 additions and 370 deletions
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2
plat/nvidia/tegra/common/tegra_common.mk
View file

@ -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 \

321
plat/nvidia/tegra/common/tegra_gic.c
View file

@ -1,321 +0,0 @@
/*
* 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);
}

7
plat/nvidia/tegra/common/tegra_gicv2.c
View file

@ -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);
}

29
plat/nvidia/tegra/include/drivers/tegra_gic.h Normal file
View file

@ -0,0 +1,29 @@
/*
* 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__ */

1
plat/nvidia/tegra/include/plat_macros.S
View file

@ -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"

26
plat/nvidia/tegra/include/tegra_private.h
View file

@ -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);

2
plat/nvidia/tegra/soc/t132/platform_t132.mk
View file

@ -1,5 +1,5 @@
#
# 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
#

26
plat/nvidia/tegra/soc/t186/plat_setup.c
View file

@ -1,5 +1,5 @@
/*
* 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();
}

2
plat/nvidia/tegra/soc/t210/platform_t210.mk
View file

@ -1,5 +1,5 @@
#
# 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
#