forked from Imagelibrary/rtems
2c07f24af2
Replace the global variable ambapp_plb with a function to allow an automatic on demand initialization.
154 lines
3.8 KiB
C
154 lines
3.8 KiB
C
/**
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* @file
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*
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* @ingroup RTEMSBSPsRISCVGRLIBAMBA
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*/
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/*
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* AMBA Plag & Play Bus Driver Macros
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*
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* Macros used for AMBA Plug & Play bus scanning
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*
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* COPYRIGHT (c) 2004.
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* Gaisler Research
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.org/license/LICENSE.
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*/
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#ifndef __AMBA_H__
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#define __AMBA_H__
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/**
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* @defgroup RTEMSBSPsRISCVGRLIBAMBA RISC-V AMBA Driver Handler
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*
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* @ingroup RTEMSBSPsRISCVGRLIB
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*
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* @ingroup RTEMSBSPsSharedGRLIB
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*
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* @brief AMBA Plag & Play Bus Driver Macros
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*
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* @{
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*/
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#ifndef GRLIB_IO_AREA
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#define GRLIB_IO_AREA 0xfff00000
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#endif
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#define GRLIB_CONF_AREA 0xff000
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#define GRLIB_AHB_SLAVE_CONF_AREA (1 << 11)
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#define GRLIB_AHB_CONF_WORDS 8
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#define GRLIB_APB_CONF_WORDS 2
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#define GRLIB_AHB_MASTERS 64
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#define GRLIB_AHB_SLAVES 64
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#define GRLIB_APB_SLAVES 16
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#if defined(RTEMS_MULTIPROCESSING)
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#define GRLIB_CLOCK_INDEX \
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(rtems_configuration_get_user_multiprocessing_table() ? GRLIB_Cpu_Index : 0)
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#else
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#define GRLIB_CLOCK_INDEX 0
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#endif
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#if defined(RTEMS_SMP)
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#define GRLIB_COUNTER_GPTIMER_INDEX (GRLIB_CLOCK_INDEX + 1)
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#else
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#define GRLIB_COUNTER_GPTIMER_INDEX GRLIB_CLOCK_INDEX
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#endif
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#define GRLIB_GPTIMER_0_FREQUENCY_SET_BY_BOOT_LOADER 1000000
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#define GRLIB_IRQMPSTATUS_CPUNR 28
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#include <grlib/ambapp.h>
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#include <grlib/grlib.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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extern uint32_t GRLIB_Cpu_Index;
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extern const unsigned char GRLIB_mp_irq;
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extern volatile struct irqmp_regs *GRLIB_IrqCtrl_Regs;
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extern struct ambapp_dev *GRLIB_IrqCtrl_Adev;
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extern int GRLIB_IrqCtrl_EIrq;
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extern volatile struct gptimer_regs *GRLIB_Timer_Regs;
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extern struct ambapp_dev *GRLIB_Timer_Adev;
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void gptimer_initialize(void);
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void irqmp_initialize(void);
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static inline uint32_t grlib_up_counter_frequency(void)
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{
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/*
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* For simplicity, assume that the interrupt controller uses the processor
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* clock. This is at least true on the GR740.
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*/
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return ambapp_freq_get(ambapp_plb(), GRLIB_IrqCtrl_Adev);
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}
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extern rtems_interrupt_lock GRLIB_IrqCtrl_Lock;
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static inline uint32_t grlib_get_cpu_count(
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volatile struct irqmp_regs *irqmp
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)
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{
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uint32_t mpstat = irqmp->mpstat;
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return ((mpstat >> GRLIB_IRQMPSTATUS_CPUNR) & 0xf) + 1;
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}
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#define GRLIB_IRQCTRL_ACQUIRE( _lock_context ) \
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rtems_interrupt_lock_acquire( &GRLIB_IrqCtrl_Lock, _lock_context )
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#define GRLIB_IRQCTRL_RELEASE( _lock_context ) \
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rtems_interrupt_lock_release( &GRLIB_IrqCtrl_Lock, _lock_context )
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#define GRLIB_Cpu_Unmask_interrupt( _source, _cpu ) \
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do { \
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rtems_interrupt_lock_context _lock_context; \
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GRLIB_IRQCTRL_ACQUIRE( &_lock_context ); \
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GRLIB_IrqCtrl_Regs->mask[_cpu] |= (1U << (_source)); \
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GRLIB_IRQCTRL_RELEASE( &_lock_context ); \
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} while (0)
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#define GRLIB_Cpu_Mask_interrupt( _source, _cpu ) \
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do { \
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rtems_interrupt_lock_context _lock_context; \
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GRLIB_IRQCTRL_ACQUIRE( &_lock_context ); \
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GRLIB_IrqCtrl_Regs->mask[_cpu] &= ~(1U << (_source)); \
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GRLIB_IRQCTRL_RELEASE( &_lock_context ); \
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} while (0)
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#define GRLIB_Enable_interrupt_broadcast( _source ) \
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do { \
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rtems_interrupt_lock_context _lock_context; \
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uint32_t _mask = 1U << ( _source ); \
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GRLIB_IRQCTRL_ACQUIRE( &_lock_context ); \
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GRLIB_IrqCtrl_Regs->bcast |= _mask; \
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GRLIB_IRQCTRL_RELEASE( &_lock_context ); \
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} while (0)
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#define GRLIB_Disable_interrupt_broadcast( _source ) \
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do { \
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rtems_interrupt_lock_context _lock_context; \
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uint32_t _mask = 1U << ( _source ); \
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GRLIB_IRQCTRL_ACQUIRE( &_lock_context ); \
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GRLIB_IrqCtrl_Regs->bcast &= ~_mask; \
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GRLIB_IRQCTRL_RELEASE( &_lock_context ); \
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} while (0)
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#define BSP_Cpu_Is_interrupt_masked( _source, _cpu ) \
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(!(GRLIB_IrqCtrl_Regs->mask[_cpu] & (1U << (_source))))
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#ifdef __cplusplus
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}
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#endif
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/** @} */
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#endif /* __AMBA_H__ */
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