mirrors/qemu
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
34cdea1db6
qemu/hw/intc/gicv3_internal.h
Peter Maydell b74d7c0e50 hw/intc/arm_gicv3: Add new gicv3_intid_is_special() function 
The GICv3/v4 pseudocode has a function IsSpecial() which returns true
if passed a "special" interrupt ID number (anything between 1020 and
1023 inclusive).  We open-code this condition in a couple of places,
so abstract it out into a new function gicv3_intid_is_special().

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
2021-11-26 16:58:57 +00:00

612 lines
20 KiB
C
Raw Blame History

/*
* ARM GICv3 support - internal interfaces
*
* Copyright (c) 2012 Linaro Limited
* Copyright (c) 2015 Huawei.
* Copyright (c) 2015 Samsung Electronics Co., Ltd.
* Written by Peter Maydell
* Reworked for GICv3 by Shlomo Pongratz and Pavel Fedin
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef QEMU_ARM_GICV3_INTERNAL_H
#define QEMU_ARM_GICV3_INTERNAL_H
#include "hw/registerfields.h"
#include "hw/intc/arm_gicv3_common.h"
/* Distributor registers, as offsets from the distributor base address */
#define GICD_CTLR 0x0000
#define GICD_TYPER 0x0004
#define GICD_IIDR 0x0008
#define GICD_STATUSR 0x0010
#define GICD_SETSPI_NSR 0x0040
#define GICD_CLRSPI_NSR 0x0048
#define GICD_SETSPI_SR 0x0050
#define GICD_CLRSPI_SR 0x0058
#define GICD_SEIR 0x0068
#define GICD_IGROUPR 0x0080
#define GICD_ISENABLER 0x0100
#define GICD_ICENABLER 0x0180
#define GICD_ISPENDR 0x0200
#define GICD_ICPENDR 0x0280
#define GICD_ISACTIVER 0x0300
#define GICD_ICACTIVER 0x0380
#define GICD_IPRIORITYR 0x0400
#define GICD_ITARGETSR 0x0800
#define GICD_ICFGR 0x0C00
#define GICD_IGRPMODR 0x0D00
#define GICD_NSACR 0x0E00
#define GICD_SGIR 0x0F00
#define GICD_CPENDSGIR 0x0F10
#define GICD_SPENDSGIR 0x0F20
#define GICD_IROUTER 0x6000
#define GICD_IDREGS 0xFFD0
/* GICD_CTLR fields */
#define GICD_CTLR_EN_GRP0 (1U << 0)
#define GICD_CTLR_EN_GRP1NS (1U << 1) /* GICv3 5.3.20 */
#define GICD_CTLR_EN_GRP1S (1U << 2)
#define GICD_CTLR_EN_GRP1_ALL (GICD_CTLR_EN_GRP1NS | GICD_CTLR_EN_GRP1S)
/* Bit 4 is ARE if the system doesn't support TrustZone, ARE_S otherwise */
#define GICD_CTLR_ARE (1U << 4)
#define GICD_CTLR_ARE_S (1U << 4)
#define GICD_CTLR_ARE_NS (1U << 5)
#define GICD_CTLR_DS (1U << 6)
#define GICD_CTLR_E1NWF (1U << 7)
#define GICD_CTLR_RWP (1U << 31)
#define GICD_TYPER_LPIS_SHIFT 17
/* 16 bits EventId */
#define GICD_TYPER_IDBITS 0xf
/*
* Redistributor frame offsets from RD_base
*/
#define GICR_SGI_OFFSET 0x10000
/*
* Redistributor registers, offsets from RD_base
*/
#define GICR_CTLR 0x0000
#define GICR_IIDR 0x0004
#define GICR_TYPER 0x0008
#define GICR_STATUSR 0x0010
#define GICR_WAKER 0x0014
#define GICR_SETLPIR 0x0040
#define GICR_CLRLPIR 0x0048
#define GICR_PROPBASER 0x0070
#define GICR_PENDBASER 0x0078
#define GICR_INVLPIR 0x00A0
#define GICR_INVALLR 0x00B0
#define GICR_SYNCR 0x00C0
#define GICR_IDREGS 0xFFD0
/* SGI and PPI Redistributor registers, offsets from RD_base */
#define GICR_IGROUPR0 (GICR_SGI_OFFSET + 0x0080)
#define GICR_ISENABLER0 (GICR_SGI_OFFSET + 0x0100)
#define GICR_ICENABLER0 (GICR_SGI_OFFSET + 0x0180)
#define GICR_ISPENDR0 (GICR_SGI_OFFSET + 0x0200)
#define GICR_ICPENDR0 (GICR_SGI_OFFSET + 0x0280)
#define GICR_ISACTIVER0 (GICR_SGI_OFFSET + 0x0300)
#define GICR_ICACTIVER0 (GICR_SGI_OFFSET + 0x0380)
#define GICR_IPRIORITYR (GICR_SGI_OFFSET + 0x0400)
#define GICR_ICFGR0 (GICR_SGI_OFFSET + 0x0C00)
#define GICR_ICFGR1 (GICR_SGI_OFFSET + 0x0C04)
#define GICR_IGRPMODR0 (GICR_SGI_OFFSET + 0x0D00)
#define GICR_NSACR (GICR_SGI_OFFSET + 0x0E00)
#define GICR_CTLR_ENABLE_LPIS (1U << 0)
#define GICR_CTLR_RWP (1U << 3)
#define GICR_CTLR_DPG0 (1U << 24)
#define GICR_CTLR_DPG1NS (1U << 25)
#define GICR_CTLR_DPG1S (1U << 26)
#define GICR_CTLR_UWP (1U << 31)
#define GICR_TYPER_PLPIS (1U << 0)
#define GICR_TYPER_VLPIS (1U << 1)
#define GICR_TYPER_DIRECTLPI (1U << 3)
#define GICR_TYPER_LAST (1U << 4)
#define GICR_TYPER_DPGS (1U << 5)
#define GICR_TYPER_PROCNUM (0xFFFFU << 8)
#define GICR_TYPER_COMMONLPIAFF (0x3 << 24)
#define GICR_TYPER_AFFINITYVALUE (0xFFFFFFFFULL << 32)
#define GICR_WAKER_ProcessorSleep (1U << 1)
#define GICR_WAKER_ChildrenAsleep (1U << 2)
FIELD(GICR_PROPBASER, IDBITS, 0, 5)
FIELD(GICR_PROPBASER, INNERCACHE, 7, 3)
FIELD(GICR_PROPBASER, SHAREABILITY, 10, 2)
FIELD(GICR_PROPBASER, PHYADDR, 12, 40)
FIELD(GICR_PROPBASER, OUTERCACHE, 56, 3)
FIELD(GICR_PENDBASER, INNERCACHE, 7, 3)
FIELD(GICR_PENDBASER, SHAREABILITY, 10, 2)
FIELD(GICR_PENDBASER, PHYADDR, 16, 36)
FIELD(GICR_PENDBASER, OUTERCACHE, 56, 3)
FIELD(GICR_PENDBASER, PTZ, 62, 1)
#define GICR_PROPBASER_IDBITS_THRESHOLD 0xd
#define ICC_CTLR_EL1_CBPR (1U << 0)
#define ICC_CTLR_EL1_EOIMODE (1U << 1)
#define ICC_CTLR_EL1_PMHE (1U << 6)
#define ICC_CTLR_EL1_PRIBITS_SHIFT 8
#define ICC_CTLR_EL1_PRIBITS_MASK (7U << ICC_CTLR_EL1_PRIBITS_SHIFT)
#define ICC_CTLR_EL1_IDBITS_SHIFT 11
#define ICC_CTLR_EL1_SEIS (1U << 14)
#define ICC_CTLR_EL1_A3V (1U << 15)
#define ICC_PMR_PRIORITY_MASK 0xff
#define ICC_BPR_BINARYPOINT_MASK 0x07
#define ICC_IGRPEN_ENABLE 0x01
#define ICC_CTLR_EL3_CBPR_EL1S (1U << 0)
#define ICC_CTLR_EL3_CBPR_EL1NS (1U << 1)
#define ICC_CTLR_EL3_EOIMODE_EL3 (1U << 2)
#define ICC_CTLR_EL3_EOIMODE_EL1S (1U << 3)
#define ICC_CTLR_EL3_EOIMODE_EL1NS (1U << 4)
#define ICC_CTLR_EL3_RM (1U << 5)
#define ICC_CTLR_EL3_PMHE (1U << 6)
#define ICC_CTLR_EL3_PRIBITS_SHIFT 8
#define ICC_CTLR_EL3_IDBITS_SHIFT 11
#define ICC_CTLR_EL3_SEIS (1U << 14)
#define ICC_CTLR_EL3_A3V (1U << 15)
#define ICC_CTLR_EL3_NDS (1U << 17)
#define ICH_VMCR_EL2_VENG0_SHIFT 0
#define ICH_VMCR_EL2_VENG0 (1U << ICH_VMCR_EL2_VENG0_SHIFT)
#define ICH_VMCR_EL2_VENG1_SHIFT 1
#define ICH_VMCR_EL2_VENG1 (1U << ICH_VMCR_EL2_VENG1_SHIFT)
#define ICH_VMCR_EL2_VACKCTL (1U << 2)
#define ICH_VMCR_EL2_VFIQEN (1U << 3)
#define ICH_VMCR_EL2_VCBPR_SHIFT 4
#define ICH_VMCR_EL2_VCBPR (1U << ICH_VMCR_EL2_VCBPR_SHIFT)
#define ICH_VMCR_EL2_VEOIM_SHIFT 9
#define ICH_VMCR_EL2_VEOIM (1U << ICH_VMCR_EL2_VEOIM_SHIFT)
#define ICH_VMCR_EL2_VBPR1_SHIFT 18
#define ICH_VMCR_EL2_VBPR1_LENGTH 3
#define ICH_VMCR_EL2_VBPR1_MASK (0x7U << ICH_VMCR_EL2_VBPR1_SHIFT)
#define ICH_VMCR_EL2_VBPR0_SHIFT 21
#define ICH_VMCR_EL2_VBPR0_LENGTH 3
#define ICH_VMCR_EL2_VBPR0_MASK (0x7U << ICH_VMCR_EL2_VBPR0_SHIFT)
#define ICH_VMCR_EL2_VPMR_SHIFT 24
#define ICH_VMCR_EL2_VPMR_LENGTH 8
#define ICH_VMCR_EL2_VPMR_MASK (0xffU << ICH_VMCR_EL2_VPMR_SHIFT)
#define ICH_HCR_EL2_EN (1U << 0)
#define ICH_HCR_EL2_UIE (1U << 1)
#define ICH_HCR_EL2_LRENPIE (1U << 2)
#define ICH_HCR_EL2_NPIE (1U << 3)
#define ICH_HCR_EL2_VGRP0EIE (1U << 4)
#define ICH_HCR_EL2_VGRP0DIE (1U << 5)
#define ICH_HCR_EL2_VGRP1EIE (1U << 6)
#define ICH_HCR_EL2_VGRP1DIE (1U << 7)
#define ICH_HCR_EL2_TC (1U << 10)
#define ICH_HCR_EL2_TALL0 (1U << 11)
#define ICH_HCR_EL2_TALL1 (1U << 12)
#define ICH_HCR_EL2_TSEI (1U << 13)
#define ICH_HCR_EL2_TDIR (1U << 14)
#define ICH_HCR_EL2_EOICOUNT_SHIFT 27
#define ICH_HCR_EL2_EOICOUNT_LENGTH 5
#define ICH_HCR_EL2_EOICOUNT_MASK (0x1fU << ICH_HCR_EL2_EOICOUNT_SHIFT)
#define ICH_LR_EL2_VINTID_SHIFT 0
#define ICH_LR_EL2_VINTID_LENGTH 32
#define ICH_LR_EL2_VINTID_MASK (0xffffffffULL << ICH_LR_EL2_VINTID_SHIFT)
#define ICH_LR_EL2_PINTID_SHIFT 32
#define ICH_LR_EL2_PINTID_LENGTH 10
#define ICH_LR_EL2_PINTID_MASK (0x3ffULL << ICH_LR_EL2_PINTID_SHIFT)
/* Note that EOI shares with the top bit of the pINTID field */
#define ICH_LR_EL2_EOI (1ULL << 41)
#define ICH_LR_EL2_PRIORITY_SHIFT 48
#define ICH_LR_EL2_PRIORITY_LENGTH 8
#define ICH_LR_EL2_PRIORITY_MASK (0xffULL << ICH_LR_EL2_PRIORITY_SHIFT)
#define ICH_LR_EL2_GROUP (1ULL << 60)
#define ICH_LR_EL2_HW (1ULL << 61)
#define ICH_LR_EL2_STATE_SHIFT 62
#define ICH_LR_EL2_STATE_LENGTH 2
#define ICH_LR_EL2_STATE_MASK (3ULL << ICH_LR_EL2_STATE_SHIFT)
/* values for the state field: */
#define ICH_LR_EL2_STATE_INVALID 0
#define ICH_LR_EL2_STATE_PENDING 1
#define ICH_LR_EL2_STATE_ACTIVE 2
#define ICH_LR_EL2_STATE_ACTIVE_PENDING 3
#define ICH_LR_EL2_STATE_PENDING_BIT (1ULL << ICH_LR_EL2_STATE_SHIFT)
#define ICH_LR_EL2_STATE_ACTIVE_BIT (2ULL << ICH_LR_EL2_STATE_SHIFT)
#define ICH_MISR_EL2_EOI (1U << 0)
#define ICH_MISR_EL2_U (1U << 1)
#define ICH_MISR_EL2_LRENP (1U << 2)
#define ICH_MISR_EL2_NP (1U << 3)
#define ICH_MISR_EL2_VGRP0E (1U << 4)
#define ICH_MISR_EL2_VGRP0D (1U << 5)
#define ICH_MISR_EL2_VGRP1E (1U << 6)
#define ICH_MISR_EL2_VGRP1D (1U << 7)
#define ICH_VTR_EL2_LISTREGS_SHIFT 0
#define ICH_VTR_EL2_TDS (1U << 19)
#define ICH_VTR_EL2_NV4 (1U << 20)
#define ICH_VTR_EL2_A3V (1U << 21)
#define ICH_VTR_EL2_SEIS (1U << 22)
#define ICH_VTR_EL2_IDBITS_SHIFT 23
#define ICH_VTR_EL2_PREBITS_SHIFT 26
#define ICH_VTR_EL2_PRIBITS_SHIFT 29
/* ITS Registers */
FIELD(GITS_BASER, SIZE, 0, 8)
FIELD(GITS_BASER, PAGESIZE, 8, 2)
FIELD(GITS_BASER, SHAREABILITY, 10, 2)
FIELD(GITS_BASER, PHYADDR, 12, 36)
FIELD(GITS_BASER, PHYADDRL_64K, 16, 32)
FIELD(GITS_BASER, PHYADDRH_64K, 12, 4)
FIELD(GITS_BASER, ENTRYSIZE, 48, 5)
FIELD(GITS_BASER, OUTERCACHE, 53, 3)
FIELD(GITS_BASER, TYPE, 56, 3)
FIELD(GITS_BASER, INNERCACHE, 59, 3)
FIELD(GITS_BASER, INDIRECT, 62, 1)
FIELD(GITS_BASER, VALID, 63, 1)
FIELD(GITS_CBASER, SIZE, 0, 8)
FIELD(GITS_CBASER, SHAREABILITY, 10, 2)
FIELD(GITS_CBASER, PHYADDR, 12, 40)
FIELD(GITS_CBASER, OUTERCACHE, 53, 3)
FIELD(GITS_CBASER, INNERCACHE, 59, 3)
FIELD(GITS_CBASER, VALID, 63, 1)
FIELD(GITS_CREADR, STALLED, 0, 1)
FIELD(GITS_CREADR, OFFSET, 5, 15)
FIELD(GITS_CWRITER, RETRY, 0, 1)
FIELD(GITS_CWRITER, OFFSET, 5, 15)
FIELD(GITS_CTLR, ENABLED, 0, 1)
FIELD(GITS_CTLR, QUIESCENT, 31, 1)
FIELD(GITS_TYPER, PHYSICAL, 0, 1)
FIELD(GITS_TYPER, ITT_ENTRY_SIZE, 4, 4)
FIELD(GITS_TYPER, IDBITS, 8, 5)
FIELD(GITS_TYPER, DEVBITS, 13, 5)
FIELD(GITS_TYPER, SEIS, 18, 1)
FIELD(GITS_TYPER, PTA, 19, 1)
FIELD(GITS_TYPER, CIDBITS, 32, 4)
FIELD(GITS_TYPER, CIL, 36, 1)
#define GITS_IDREGS 0xFFD0
#define ITS_CTLR_ENABLED (1U) /* ITS Enabled */
#define GITS_BASER_RO_MASK (R_GITS_BASER_ENTRYSIZE_MASK | \
R_GITS_BASER_TYPE_MASK)
#define GITS_BASER_PAGESIZE_4K 0
#define GITS_BASER_PAGESIZE_16K 1
#define GITS_BASER_PAGESIZE_64K 2
#define GITS_BASER_TYPE_DEVICE 1ULL
#define GITS_BASER_TYPE_COLLECTION 4ULL
#define GITS_PAGE_SIZE_4K 0x1000
#define GITS_PAGE_SIZE_16K 0x4000
#define GITS_PAGE_SIZE_64K 0x10000
#define L1TABLE_ENTRY_SIZE 8
#define LPI_CTE_ENABLED TABLE_ENTRY_VALID_MASK
#define LPI_PRIORITY_MASK 0xfc
#define GITS_CMDQ_ENTRY_SIZE 32
#define NUM_BYTES_IN_DW 8
#define CMD_MASK 0xff
/* ITS Commands */
#define GITS_CMD_CLEAR 0x04
#define GITS_CMD_DISCARD 0x0F
#define GITS_CMD_INT 0x03
#define GITS_CMD_MAPC 0x09
#define GITS_CMD_MAPD 0x08
#define GITS_CMD_MAPI 0x0B
#define GITS_CMD_MAPTI 0x0A
#define GITS_CMD_INV 0x0C
#define GITS_CMD_INVALL 0x0D
#define GITS_CMD_SYNC 0x05
/* MAPC command fields */
#define ICID_LENGTH 16
#define ICID_MASK ((1U << ICID_LENGTH) - 1)
FIELD(MAPC, RDBASE, 16, 32)
#define RDBASE_PROCNUM_LENGTH 16
#define RDBASE_PROCNUM_MASK ((1ULL << RDBASE_PROCNUM_LENGTH) - 1)
/* MAPD command fields */
#define ITTADDR_LENGTH 44
#define ITTADDR_SHIFT 8
#define ITTADDR_MASK MAKE_64BIT_MASK(ITTADDR_SHIFT, ITTADDR_LENGTH)
#define SIZE_MASK 0x1f
/* MAPI command fields */
#define EVENTID_MASK ((1ULL << 32) - 1)
/* MAPTI command fields */
#define pINTID_SHIFT 32
#define pINTID_MASK MAKE_64BIT_MASK(32, 32)
#define DEVID_SHIFT 32
#define DEVID_MASK MAKE_64BIT_MASK(32, 32)
#define VALID_SHIFT 63
#define CMD_FIELD_VALID_MASK (1ULL << VALID_SHIFT)
#define L2_TABLE_VALID_MASK CMD_FIELD_VALID_MASK
#define TABLE_ENTRY_VALID_MASK (1ULL << 0)
/**
* Default features advertised by this version of ITS
*/
/* Physical LPIs supported */
#define GITS_TYPE_PHYSICAL (1U << 0)
/*
* 12 bytes Interrupt translation Table Entry size
* as per Table 5.3 in GICv3 spec
* ITE Lower 8 Bytes
* Bits: | 49 ... 26 | 25 ... 2 | 1 | 0 |
* Values: | 1023 | IntNum | IntType | Valid |
* ITE Higher 4 Bytes
* Bits: | 31 ... 16 | 15 ...0 |
* Values: | vPEID | ICID |
*/
#define ITS_ITT_ENTRY_SIZE 0xC
#define ITE_ENTRY_INTTYPE_SHIFT 1
#define ITE_ENTRY_INTID_SHIFT 2
#define ITE_ENTRY_INTID_MASK MAKE_64BIT_MASK(2, 24)
#define ITE_ENTRY_INTSP_SHIFT 26
#define ITE_ENTRY_ICID_MASK MAKE_64BIT_MASK(0, 16)
/* 16 bits EventId */
#define ITS_IDBITS GICD_TYPER_IDBITS
/* 16 bits DeviceId */
#define ITS_DEVBITS 0xF
/* 16 bits CollectionId */
#define ITS_CIDBITS 0xF
/*
* 8 bytes Device Table Entry size
* Valid = 1 bit,ITTAddr = 44 bits,Size = 5 bits
*/
#define GITS_DTE_SIZE (0x8ULL)
#define GITS_DTE_ITTADDR_SHIFT 6
#define GITS_DTE_ITTADDR_MASK MAKE_64BIT_MASK(GITS_DTE_ITTADDR_SHIFT, \
ITTADDR_LENGTH)
/*
* 8 bytes Collection Table Entry size
* Valid = 1 bit,RDBase = 36 bits(considering max RDBASE)
*/
#define GITS_CTE_SIZE (0x8ULL)
#define GITS_CTE_RDBASE_PROCNUM_MASK MAKE_64BIT_MASK(1, RDBASE_PROCNUM_LENGTH)
/* Special interrupt IDs */
#define INTID_SECURE 1020
#define INTID_NONSECURE 1021
#define INTID_SPURIOUS 1023
/* Functions internal to the emulated GICv3 */
/**
* gicv3_intid_is_special:
* @intid: interrupt ID
*
* Return true if @intid is a special interrupt ID (1020 to
* 1023 inclusive). This corresponds to the GIC spec pseudocode
* IsSpecial() function.
*/
static inline bool gicv3_intid_is_special(int intid)
{
return intid >= INTID_SECURE && intid <= INTID_SPURIOUS;
}
/**
* gicv3_redist_update:
* @cs: GICv3CPUState for this redistributor
*
* Recalculate the highest priority pending interrupt after a
* change to redistributor state, and inform the CPU accordingly.
*/
void gicv3_redist_update(GICv3CPUState *cs);
/**
* gicv3_update:
* @s: GICv3State
* @start: first interrupt whose state changed
* @len: length of the range of interrupts whose state changed
*
* Recalculate the highest priority pending interrupts after a
* change to the distributor state affecting @len interrupts
* starting at @start, and inform the CPUs accordingly.
*/
void gicv3_update(GICv3State *s, int start, int len);
/**
* gicv3_full_update_noirqset:
* @s: GICv3State
*
* Recalculate the cached information about highest priority
* pending interrupts, but don't inform the CPUs. This should be
* called after an incoming migration has loaded new state.
*/
void gicv3_full_update_noirqset(GICv3State *s);
/**
* gicv3_full_update:
* @s: GICv3State
*
* Recalculate the highest priority pending interrupts after
* a change that could affect the status of all interrupts,
* and inform the CPUs accordingly.
*/
void gicv3_full_update(GICv3State *s);
MemTxResult gicv3_dist_read(void *opaque, hwaddr offset, uint64_t *data,
unsigned size, MemTxAttrs attrs);
MemTxResult gicv3_dist_write(void *opaque, hwaddr addr, uint64_t data,
unsigned size, MemTxAttrs attrs);
MemTxResult gicv3_redist_read(void *opaque, hwaddr offset, uint64_t *data,
unsigned size, MemTxAttrs attrs);
MemTxResult gicv3_redist_write(void *opaque, hwaddr offset, uint64_t data,
unsigned size, MemTxAttrs attrs);
void gicv3_dist_set_irq(GICv3State *s, int irq, int level);
void gicv3_redist_set_irq(GICv3CPUState *cs, int irq, int level);
void gicv3_redist_process_lpi(GICv3CPUState *cs, int irq, int level);
void gicv3_redist_lpi_pending(GICv3CPUState *cs, int irq, int level);
/**
* gicv3_redist_update_lpi:
* @cs: GICv3CPUState
*
* Scan the LPI pending table and recalculate the highest priority
* pending LPI and also the overall highest priority pending interrupt.
*/
void gicv3_redist_update_lpi(GICv3CPUState *cs);
/**
* gicv3_redist_update_lpi_only:
* @cs: GICv3CPUState
*
* Scan the LPI pending table and recalculate cs->hpplpi only,
* without calling gicv3_redist_update() to recalculate the overall
* highest priority pending interrupt. This should be called after
* an incoming migration has loaded new state.
*/
void gicv3_redist_update_lpi_only(GICv3CPUState *cs);
void gicv3_redist_send_sgi(GICv3CPUState *cs, int grp, int irq, bool ns);
void gicv3_init_cpuif(GICv3State *s);
/**
* gicv3_cpuif_update:
* @cs: GICv3CPUState for the CPU to update
*
* Recalculate whether to assert the IRQ or FIQ lines after a change
* to the current highest priority pending interrupt, the CPU's
* current running priority or the CPU's current exception level or
* security state.
*/
void gicv3_cpuif_update(GICv3CPUState *cs);
static inline uint32_t gicv3_iidr(void)
{
/* Return the Implementer Identification Register value
* for the emulated GICv3, as reported in GICD_IIDR and GICR_IIDR.
*
* We claim to be an ARM r0p0 with a zero ProductID.
* This is the same as an r0p0 GIC-500.
*/
return 0x43b;
}
static inline uint32_t gicv3_idreg(int regoffset)
{
/* Return the value of the CoreSight ID register at the specified
* offset from the first ID register (as found in the distributor
* and redistributor register banks).
* These values indicate an ARM implementation of a GICv3.
*/
static const uint8_t gicd_ids[] = {
0x44, 0x00, 0x00, 0x00, 0x92, 0xB4, 0x3B, 0x00, 0x0D, 0xF0, 0x05, 0xB1
};
return gicd_ids[regoffset / 4];
}
/**
* gicv3_irq_group:
*
* Return the group which this interrupt is configured as (GICV3_G0,
* GICV3_G1 or GICV3_G1NS).
*/
static inline int gicv3_irq_group(GICv3State *s, GICv3CPUState *cs, int irq)
{
bool grpbit, grpmodbit;
if (irq < GIC_INTERNAL) {
grpbit = extract32(cs->gicr_igroupr0, irq, 1);
grpmodbit = extract32(cs->gicr_igrpmodr0, irq, 1);
} else {
grpbit = gicv3_gicd_group_test(s, irq);
grpmodbit = gicv3_gicd_grpmod_test(s, irq);
}
if (grpbit) {
return GICV3_G1NS;
}
if (s->gicd_ctlr & GICD_CTLR_DS) {
return GICV3_G0;
}
return grpmodbit ? GICV3_G1 : GICV3_G0;
}
/**
* gicv3_redist_affid:
*
* Return the 32-bit affinity ID of the CPU connected to this redistributor
*/
static inline uint32_t gicv3_redist_affid(GICv3CPUState *cs)
{
return cs->gicr_typer >> 32;
}
/**
* gicv3_cache_target_cpustate:
*
* Update the cached CPU state corresponding to the target for this interrupt
* (which is kept in s->gicd_irouter_target[]).
*/
static inline void gicv3_cache_target_cpustate(GICv3State *s, int irq)
{
GICv3CPUState *cs = NULL;
int i;
uint32_t tgtaff = extract64(s->gicd_irouter[irq], 0, 24) |
extract64(s->gicd_irouter[irq], 32, 8) << 24;
for (i = 0; i < s->num_cpu; i++) {
if (s->cpu[i].gicr_typer >> 32 == tgtaff) {
cs = &s->cpu[i];
break;
}
}
s->gicd_irouter_target[irq] = cs;
}
/**
* gicv3_cache_all_target_cpustates:
*
* Populate the entire cache of CPU state pointers for interrupt targets
* (eg after inbound migration or CPU reset)
*/
static inline void gicv3_cache_all_target_cpustates(GICv3State *s)
{
int irq;
for (irq = GIC_INTERNAL; irq < GICV3_MAXIRQ; irq++) {
gicv3_cache_target_cpustate(s, irq);
}
}
void gicv3_set_gicv3state(CPUState *cpu, GICv3CPUState *s);
#endif /* QEMU_ARM_GICV3_INTERNAL_H */
Reference in New Issue View Git Blame Copy Permalink