/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @ingroup RTEMSBSPsRISCVGRLIBAMBA
*/
/*
* AMBA Plag & Play Bus Driver Macros
*
* Macros used for AMBA Plug & Play bus scanning
*
* COPYRIGHT (c) 2004.
* Gaisler Research
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __AMBA_H__
#define __AMBA_H__
/**
* @defgroup RTEMSBSPsRISCVGRLIBAMBA RISC-V AMBA Driver Handler
*
* @ingroup RTEMSBSPsRISCVGRLIB
*
* @ingroup RTEMSBSPsSharedGRLIB
*
* @brief AMBA Plag & Play Bus Driver Macros
*
* @{
*/
#ifndef GRLIB_IO_AREA
#define GRLIB_IO_AREA 0xfff00000
#endif
#define GRLIB_CONF_AREA 0xff000
#define GRLIB_AHB_SLAVE_CONF_AREA (1 << 11)
#define GRLIB_AHB_CONF_WORDS 8
#define GRLIB_APB_CONF_WORDS 2
#define GRLIB_AHB_MASTERS 64
#define GRLIB_AHB_SLAVES 64
#define GRLIB_APB_SLAVES 16
#if defined(RTEMS_MULTIPROCESSING)
#define GRLIB_CLOCK_INDEX \
(rtems_configuration_get_user_multiprocessing_table() ? GRLIB_Cpu_Index : 0)
#else
#define GRLIB_CLOCK_INDEX 0
#endif
#if defined(RTEMS_SMP)
#define GRLIB_COUNTER_GPTIMER_INDEX (GRLIB_CLOCK_INDEX + 1)
#else
#define GRLIB_COUNTER_GPTIMER_INDEX GRLIB_CLOCK_INDEX
#endif
#define GRLIB_GPTIMER_0_FREQUENCY_SET_BY_BOOT_LOADER 1000000
#define GRLIB_IRQMPSTATUS_CPUNR 28
#include <grlib/ambapp.h>
#include <grlib/grlib.h>
#ifdef __cplusplus
extern "C" {
#endif
extern uint32_t GRLIB_Cpu_Index;
extern const unsigned char GRLIB_mp_irq;
extern volatile struct irqmp_regs *GRLIB_IrqCtrl_Regs;
extern struct ambapp_dev *GRLIB_IrqCtrl_Adev;
extern int GRLIB_IrqCtrl_EIrq;
extern volatile struct gptimer_regs *GRLIB_Timer_Regs;
extern struct ambapp_dev *GRLIB_Timer_Adev;
void gptimer_initialize(void);
void irqmp_initialize(void);
static inline uint32_t grlib_up_counter_frequency(void)
{
/*
* For simplicity, assume that the interrupt controller uses the processor
* clock. This is at least true on the GR740.
*/
return ambapp_freq_get(ambapp_plb(), GRLIB_IrqCtrl_Adev);
}
extern rtems_interrupt_lock GRLIB_IrqCtrl_Lock;
static inline uint32_t grlib_get_cpu_count(
volatile struct irqmp_regs *irqmp
)
{
uint32_t mpstat = irqmp->mpstat;
return ((mpstat >> GRLIB_IRQMPSTATUS_CPUNR) & 0xf) + 1;
}
#define GRLIB_IRQCTRL_ACQUIRE( _lock_context ) \
rtems_interrupt_lock_acquire( &GRLIB_IrqCtrl_Lock, _lock_context )
#define GRLIB_IRQCTRL_RELEASE( _lock_context ) \
rtems_interrupt_lock_release( &GRLIB_IrqCtrl_Lock, _lock_context )
#define GRLIB_Cpu_Unmask_interrupt( _source, _cpu ) \
do { \
rtems_interrupt_lock_context _lock_context; \
GRLIB_IRQCTRL_ACQUIRE( &_lock_context ); \
GRLIB_IrqCtrl_Regs->mask[_cpu] |= (1U << (_source)); \
GRLIB_IRQCTRL_RELEASE( &_lock_context ); \
} while (0)
#define GRLIB_Cpu_Mask_interrupt( _source, _cpu ) \
do { \
rtems_interrupt_lock_context _lock_context; \
GRLIB_IRQCTRL_ACQUIRE( &_lock_context ); \
GRLIB_IrqCtrl_Regs->mask[_cpu] &= ~(1U << (_source)); \
GRLIB_IRQCTRL_RELEASE( &_lock_context ); \
} while (0)
#define GRLIB_Enable_interrupt_broadcast( _source ) \
do { \
rtems_interrupt_lock_context _lock_context; \
uint32_t _mask = 1U << ( _source ); \
GRLIB_IRQCTRL_ACQUIRE( &_lock_context ); \
GRLIB_IrqCtrl_Regs->bcast |= _mask; \
GRLIB_IRQCTRL_RELEASE( &_lock_context ); \
} while (0)
#define GRLIB_Disable_interrupt_broadcast( _source ) \
do { \
rtems_interrupt_lock_context _lock_context; \
uint32_t _mask = 1U << ( _source ); \
GRLIB_IRQCTRL_ACQUIRE( &_lock_context ); \
GRLIB_IrqCtrl_Regs->bcast &= ~_mask; \
GRLIB_IRQCTRL_RELEASE( &_lock_context ); \
} while (0)
#define BSP_Cpu_Is_interrupt_masked( _source, _cpu ) \
(!(GRLIB_IrqCtrl_Regs->mask[_cpu] & (1U << (_source))))
#ifdef __cplusplus
}
#endif
/** @} */
#endif /* __AMBA_H__ */
