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/*
* Copyright (c) 2015-2016, ARM Limited and Contributors. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 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.
*
* Neither the name of ARM nor the names of its contributors may be used
* to endorse or promote products derived from this software without specific
* prior written permission.
*
* 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 HOLDER 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 __GICV3_PRIVATE_H__
#define __GICV3_PRIVATE_H__
#include <gicv3.h>
#include <mmio.h>
#include <stdint.h>
/*******************************************************************************
* GICv3 private macro definitions
******************************************************************************/
/* Constants to indicate the status of the RWP bit */
#define RWP_TRUE 1
#define RWP_FALSE 0
/*
* Macro to wait for updates to :
* GICD_CTLR[2:0] - the Group Enables
* GICD_CTLR[5:4] - the ARE bits
* GICD_ICENABLERn - the clearing of enable state for SPIs
*/
#define gicd_wait_for_pending_write(gicd_base) \
do { \
; \
} while (gicd_read_ctlr(gicd_base) & GICD_CTLR_RWP_BIT)
/*
* Macro to convert an mpidr to a value suitable for programming into a
* GICD_IROUTER. Bits[31:24] in the MPIDR are cleared as they are not relevant
* to GICv3.
*/
#define gicd_irouter_val_from_mpidr(mpidr, irm) \
((mpidr & ~(0xff << 24)) | \
(irm & IROUTER_IRM_MASK) << IROUTER_IRM_SHIFT)
/*
* Macro to wait for updates to :
* GICR_ICENABLER0
* GICR_CTLR.DPG1S
* GICR_CTLR.DPG1NS
* GICR_CTLR.DPG0
*/
#define gicr_wait_for_pending_write(gicr_base) \
do { \
; \
} while (gicr_read_ctlr(gicr_base) & GICR_CTLR_RWP_BIT)
/*
* Macro to convert a GICR_TYPER affinity value into a MPIDR value. Bits[31:24]
* are zeroes.
*/
#ifdef AARCH32
#define mpidr_from_gicr_typer(typer_val) (((typer_val) >> 32) & 0xffffff)
#else
#define mpidr_from_gicr_typer(typer_val) \
(((((typer_val) >> 56) & MPIDR_AFFLVL_MASK) << MPIDR_AFF3_SHIFT) | \
(((typer_val) >> 32) & 0xffffff))
#endif
/*******************************************************************************
* Private GICv3 function prototypes for accessing entire registers.
* Note: The raw register values correspond to multiple interrupt IDs and
* the number of interrupt IDs involved depends on the register accessed.
******************************************************************************/
unsigned int gicd_read_igrpmodr(uintptr_t base, unsigned int id);
unsigned int gicr_read_ipriorityr(uintptr_t base, unsigned int id);
void gicd_write_igrpmodr(uintptr_t base, unsigned int id, unsigned int val);
void gicr_write_ipriorityr(uintptr_t base, unsigned int id, unsigned int val);
/*******************************************************************************
* Private GICv3 function prototypes for accessing the GIC registers
* corresponding to a single interrupt ID. These functions use bitwise
* operations or appropriate register accesses to modify or return
* the bit-field corresponding the single interrupt ID.
******************************************************************************/
unsigned int gicd_get_igrpmodr(uintptr_t base, unsigned int id);
unsigned int gicr_get_igrpmodr0(uintptr_t base, unsigned int id);
unsigned int gicr_get_igroupr0(uintptr_t base, unsigned int id);
void gicd_set_igrpmodr(uintptr_t base, unsigned int id);
void gicr_set_igrpmodr0(uintptr_t base, unsigned int id);
void gicr_set_isenabler0(uintptr_t base, unsigned int id);
void gicr_set_igroupr0(uintptr_t base, unsigned int id);
void gicd_clr_igrpmodr(uintptr_t base, unsigned int id);
void gicr_clr_igrpmodr0(uintptr_t base, unsigned int id);
void gicr_clr_igroupr0(uintptr_t base, unsigned int id);
void gicr_set_ipriorityr(uintptr_t base, unsigned int id, unsigned int pri);
/*******************************************************************************
* Private GICv3 helper function prototypes
******************************************************************************/
void gicv3_spis_configure_defaults(uintptr_t gicd_base);
void gicv3_ppi_sgi_configure_defaults(uintptr_t gicr_base);
void gicv3_secure_spis_configure(uintptr_t gicd_base,
unsigned int num_ints,
const unsigned int *sec_intr_list,
unsigned int int_grp);
void gicv3_secure_ppi_sgi_configure(uintptr_t gicr_base,
unsigned int num_ints,
const unsigned int *sec_intr_list,
unsigned int int_grp);
void gicv3_rdistif_base_addrs_probe(uintptr_t *rdistif_base_addrs,
unsigned int rdistif_num,
uintptr_t gicr_base,
mpidr_hash_fn mpidr_to_core_pos);
void gicv3_rdistif_mark_core_awake(uintptr_t gicr_base);
void gicv3_rdistif_mark_core_asleep(uintptr_t gicr_base);
/*******************************************************************************
* GIC Distributor interface accessors
******************************************************************************/
static inline unsigned int gicd_read_pidr2(uintptr_t base)
{
return mmio_read_32(base + GICD_PIDR2_GICV3);
}
static inline unsigned long long gicd_read_irouter(uintptr_t base, unsigned int id)
{
assert(id >= MIN_SPI_ID);
return mmio_read_64(base + GICD_IROUTER + (id << 3));
}
static inline void gicd_write_irouter(uintptr_t base,
unsigned int id,
unsigned long long affinity)
{
assert(id >= MIN_SPI_ID);
mmio_write_64(base + GICD_IROUTER + (id << 3), affinity);
}
static inline void gicd_clr_ctlr(uintptr_t base,
unsigned int bitmap,
unsigned int rwp)
{
gicd_write_ctlr(base, gicd_read_ctlr(base) & ~bitmap);
if (rwp)
gicd_wait_for_pending_write(base);
}
static inline void gicd_set_ctlr(uintptr_t base,
unsigned int bitmap,
unsigned int rwp)
{
gicd_write_ctlr(base, gicd_read_ctlr(base) | bitmap);
if (rwp)
gicd_wait_for_pending_write(base);
}
/*******************************************************************************
* GIC Redistributor interface accessors
******************************************************************************/
static inline unsigned long long gicr_read_ctlr(uintptr_t base)
{
return mmio_read_64(base + GICR_CTLR);
}
static inline unsigned long long gicr_read_typer(uintptr_t base)
{
return mmio_read_64(base + GICR_TYPER);
}
static inline unsigned int gicr_read_waker(uintptr_t base)
{
return mmio_read_32(base + GICR_WAKER);
}
static inline void gicr_write_waker(uintptr_t base, unsigned int val)
{
mmio_write_32(base + GICR_WAKER, val);
}
/*******************************************************************************
* GIC Re-distributor functions for accessing entire registers.
* Note: The raw register values correspond to multiple interrupt IDs and
* the number of interrupt IDs involved depends on the register accessed.
******************************************************************************/
static inline unsigned int gicr_read_icenabler0(uintptr_t base)
{
return mmio_read_32(base + GICR_ICENABLER0);
}
static inline void gicr_write_icenabler0(uintptr_t base, unsigned int val)
{
mmio_write_32(base + GICR_ICENABLER0, val);
}
static inline unsigned int gicr_read_isenabler0(uintptr_t base)
{
return mmio_read_32(base + GICR_ISENABLER0);
}
static inline void gicr_write_isenabler0(uintptr_t base, unsigned int val)
{
mmio_write_32(base + GICR_ISENABLER0, val);
}
static inline unsigned int gicr_read_igroupr0(uintptr_t base)
{
return mmio_read_32(base + GICR_IGROUPR0);
}
static inline void gicr_write_igroupr0(uintptr_t base, unsigned int val)
{
mmio_write_32(base + GICR_IGROUPR0, val);
}
static inline unsigned int gicr_read_igrpmodr0(uintptr_t base)
{
return mmio_read_32(base + GICR_IGRPMODR0);
}
static inline void gicr_write_igrpmodr0(uintptr_t base, unsigned int val)
{
mmio_write_32(base + GICR_IGRPMODR0, val);
}
static inline unsigned int gicr_read_icfgr1(uintptr_t base)
{
return mmio_read_32(base + GICR_ICFGR1);
}
static inline void gicr_write_icfgr1(uintptr_t base, unsigned int val)
{
mmio_write_32(base + GICR_ICFGR1, val);
}
#endif /* __GICV3_PRIVATE_H__ */