414 lines
14 KiB
C
414 lines
14 KiB
C
/*
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* ARM GICv3 support - internal interfaces
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*
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* Copyright (c) 2012 Linaro Limited
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* Copyright (c) 2015 Huawei.
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* Copyright (c) 2015 Samsung Electronics Co., Ltd.
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* Written by Peter Maydell
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* Reworked for GICv3 by Shlomo Pongratz and Pavel Fedin
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef QEMU_ARM_GICV3_INTERNAL_H
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#define QEMU_ARM_GICV3_INTERNAL_H
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#include "hw/intc/arm_gicv3_common.h"
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/* Distributor registers, as offsets from the distributor base address */
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#define GICD_CTLR 0x0000
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#define GICD_TYPER 0x0004
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#define GICD_IIDR 0x0008
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#define GICD_STATUSR 0x0010
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#define GICD_SETSPI_NSR 0x0040
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#define GICD_CLRSPI_NSR 0x0048
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#define GICD_SETSPI_SR 0x0050
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#define GICD_CLRSPI_SR 0x0058
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#define GICD_SEIR 0x0068
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#define GICD_IGROUPR 0x0080
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#define GICD_ISENABLER 0x0100
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#define GICD_ICENABLER 0x0180
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#define GICD_ISPENDR 0x0200
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#define GICD_ICPENDR 0x0280
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#define GICD_ISACTIVER 0x0300
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#define GICD_ICACTIVER 0x0380
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#define GICD_IPRIORITYR 0x0400
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#define GICD_ITARGETSR 0x0800
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#define GICD_ICFGR 0x0C00
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#define GICD_IGRPMODR 0x0D00
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#define GICD_NSACR 0x0E00
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#define GICD_SGIR 0x0F00
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#define GICD_CPENDSGIR 0x0F10
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#define GICD_SPENDSGIR 0x0F20
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#define GICD_IROUTER 0x6000
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#define GICD_IDREGS 0xFFD0
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/* GICD_CTLR fields */
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#define GICD_CTLR_EN_GRP0 (1U << 0)
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#define GICD_CTLR_EN_GRP1NS (1U << 1) /* GICv3 5.3.20 */
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#define GICD_CTLR_EN_GRP1S (1U << 2)
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#define GICD_CTLR_EN_GRP1_ALL (GICD_CTLR_EN_GRP1NS | GICD_CTLR_EN_GRP1S)
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/* Bit 4 is ARE if the system doesn't support TrustZone, ARE_S otherwise */
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#define GICD_CTLR_ARE (1U << 4)
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#define GICD_CTLR_ARE_S (1U << 4)
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#define GICD_CTLR_ARE_NS (1U << 5)
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#define GICD_CTLR_DS (1U << 6)
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#define GICD_CTLR_E1NWF (1U << 7)
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#define GICD_CTLR_RWP (1U << 31)
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/*
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* Redistributor frame offsets from RD_base
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*/
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#define GICR_SGI_OFFSET 0x10000
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/*
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* Redistributor registers, offsets from RD_base
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*/
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#define GICR_CTLR 0x0000
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#define GICR_IIDR 0x0004
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#define GICR_TYPER 0x0008
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#define GICR_STATUSR 0x0010
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#define GICR_WAKER 0x0014
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#define GICR_SETLPIR 0x0040
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#define GICR_CLRLPIR 0x0048
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#define GICR_PROPBASER 0x0070
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#define GICR_PENDBASER 0x0078
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#define GICR_INVLPIR 0x00A0
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#define GICR_INVALLR 0x00B0
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#define GICR_SYNCR 0x00C0
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#define GICR_IDREGS 0xFFD0
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/* SGI and PPI Redistributor registers, offsets from RD_base */
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#define GICR_IGROUPR0 (GICR_SGI_OFFSET + 0x0080)
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#define GICR_ISENABLER0 (GICR_SGI_OFFSET + 0x0100)
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#define GICR_ICENABLER0 (GICR_SGI_OFFSET + 0x0180)
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#define GICR_ISPENDR0 (GICR_SGI_OFFSET + 0x0200)
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#define GICR_ICPENDR0 (GICR_SGI_OFFSET + 0x0280)
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#define GICR_ISACTIVER0 (GICR_SGI_OFFSET + 0x0300)
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#define GICR_ICACTIVER0 (GICR_SGI_OFFSET + 0x0380)
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#define GICR_IPRIORITYR (GICR_SGI_OFFSET + 0x0400)
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#define GICR_ICFGR0 (GICR_SGI_OFFSET + 0x0C00)
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#define GICR_ICFGR1 (GICR_SGI_OFFSET + 0x0C04)
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#define GICR_IGRPMODR0 (GICR_SGI_OFFSET + 0x0D00)
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#define GICR_NSACR (GICR_SGI_OFFSET + 0x0E00)
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#define GICR_CTLR_ENABLE_LPIS (1U << 0)
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#define GICR_CTLR_RWP (1U << 3)
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#define GICR_CTLR_DPG0 (1U << 24)
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#define GICR_CTLR_DPG1NS (1U << 25)
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#define GICR_CTLR_DPG1S (1U << 26)
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#define GICR_CTLR_UWP (1U << 31)
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#define GICR_TYPER_PLPIS (1U << 0)
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#define GICR_TYPER_VLPIS (1U << 1)
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#define GICR_TYPER_DIRECTLPI (1U << 3)
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#define GICR_TYPER_LAST (1U << 4)
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#define GICR_TYPER_DPGS (1U << 5)
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#define GICR_TYPER_PROCNUM (0xFFFFU << 8)
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#define GICR_TYPER_COMMONLPIAFF (0x3 << 24)
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#define GICR_TYPER_AFFINITYVALUE (0xFFFFFFFFULL << 32)
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#define GICR_WAKER_ProcessorSleep (1U << 1)
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#define GICR_WAKER_ChildrenAsleep (1U << 2)
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#define GICR_PROPBASER_OUTER_CACHEABILITY_MASK (7ULL << 56)
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#define GICR_PROPBASER_ADDR_MASK (0xfffffffffULL << 12)
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#define GICR_PROPBASER_SHAREABILITY_MASK (3U << 10)
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#define GICR_PROPBASER_CACHEABILITY_MASK (7U << 7)
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#define GICR_PROPBASER_IDBITS_MASK (0x1f)
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#define GICR_PENDBASER_PTZ (1ULL << 62)
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#define GICR_PENDBASER_OUTER_CACHEABILITY_MASK (7ULL << 56)
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#define GICR_PENDBASER_ADDR_MASK (0xffffffffULL << 16)
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#define GICR_PENDBASER_SHAREABILITY_MASK (3U << 10)
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#define GICR_PENDBASER_CACHEABILITY_MASK (7U << 7)
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#define ICC_CTLR_EL1_CBPR (1U << 0)
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#define ICC_CTLR_EL1_EOIMODE (1U << 1)
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#define ICC_CTLR_EL1_PMHE (1U << 6)
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#define ICC_CTLR_EL1_PRIBITS_SHIFT 8
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#define ICC_CTLR_EL1_PRIBITS_MASK (7U << ICC_CTLR_EL1_PRIBITS_SHIFT)
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#define ICC_CTLR_EL1_IDBITS_SHIFT 11
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#define ICC_CTLR_EL1_SEIS (1U << 14)
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#define ICC_CTLR_EL1_A3V (1U << 15)
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#define ICC_PMR_PRIORITY_MASK 0xff
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#define ICC_BPR_BINARYPOINT_MASK 0x07
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#define ICC_IGRPEN_ENABLE 0x01
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#define ICC_CTLR_EL3_CBPR_EL1S (1U << 0)
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#define ICC_CTLR_EL3_CBPR_EL1NS (1U << 1)
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#define ICC_CTLR_EL3_EOIMODE_EL3 (1U << 2)
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#define ICC_CTLR_EL3_EOIMODE_EL1S (1U << 3)
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#define ICC_CTLR_EL3_EOIMODE_EL1NS (1U << 4)
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#define ICC_CTLR_EL3_RM (1U << 5)
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#define ICC_CTLR_EL3_PMHE (1U << 6)
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#define ICC_CTLR_EL3_PRIBITS_SHIFT 8
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#define ICC_CTLR_EL3_IDBITS_SHIFT 11
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#define ICC_CTLR_EL3_SEIS (1U << 14)
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#define ICC_CTLR_EL3_A3V (1U << 15)
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#define ICC_CTLR_EL3_NDS (1U << 17)
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#define ICH_VMCR_EL2_VENG0_SHIFT 0
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#define ICH_VMCR_EL2_VENG0 (1U << ICH_VMCR_EL2_VENG0_SHIFT)
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#define ICH_VMCR_EL2_VENG1_SHIFT 1
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#define ICH_VMCR_EL2_VENG1 (1U << ICH_VMCR_EL2_VENG1_SHIFT)
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#define ICH_VMCR_EL2_VACKCTL (1U << 2)
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#define ICH_VMCR_EL2_VFIQEN (1U << 3)
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#define ICH_VMCR_EL2_VCBPR_SHIFT 4
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#define ICH_VMCR_EL2_VCBPR (1U << ICH_VMCR_EL2_VCBPR_SHIFT)
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#define ICH_VMCR_EL2_VEOIM_SHIFT 9
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#define ICH_VMCR_EL2_VEOIM (1U << ICH_VMCR_EL2_VEOIM_SHIFT)
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#define ICH_VMCR_EL2_VBPR1_SHIFT 18
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#define ICH_VMCR_EL2_VBPR1_LENGTH 3
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#define ICH_VMCR_EL2_VBPR1_MASK (0x7U << ICH_VMCR_EL2_VBPR1_SHIFT)
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#define ICH_VMCR_EL2_VBPR0_SHIFT 21
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#define ICH_VMCR_EL2_VBPR0_LENGTH 3
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#define ICH_VMCR_EL2_VBPR0_MASK (0x7U << ICH_VMCR_EL2_VBPR0_SHIFT)
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#define ICH_VMCR_EL2_VPMR_SHIFT 24
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#define ICH_VMCR_EL2_VPMR_LENGTH 8
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#define ICH_VMCR_EL2_VPMR_MASK (0xffU << ICH_VMCR_EL2_VPMR_SHIFT)
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#define ICH_HCR_EL2_EN (1U << 0)
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#define ICH_HCR_EL2_UIE (1U << 1)
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#define ICH_HCR_EL2_LRENPIE (1U << 2)
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#define ICH_HCR_EL2_NPIE (1U << 3)
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#define ICH_HCR_EL2_VGRP0EIE (1U << 4)
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#define ICH_HCR_EL2_VGRP0DIE (1U << 5)
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#define ICH_HCR_EL2_VGRP1EIE (1U << 6)
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#define ICH_HCR_EL2_VGRP1DIE (1U << 7)
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#define ICH_HCR_EL2_TC (1U << 10)
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#define ICH_HCR_EL2_TALL0 (1U << 11)
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#define ICH_HCR_EL2_TALL1 (1U << 12)
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#define ICH_HCR_EL2_TSEI (1U << 13)
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#define ICH_HCR_EL2_TDIR (1U << 14)
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#define ICH_HCR_EL2_EOICOUNT_SHIFT 27
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#define ICH_HCR_EL2_EOICOUNT_LENGTH 5
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#define ICH_HCR_EL2_EOICOUNT_MASK (0x1fU << ICH_HCR_EL2_EOICOUNT_SHIFT)
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#define ICH_LR_EL2_VINTID_SHIFT 0
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#define ICH_LR_EL2_VINTID_LENGTH 32
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#define ICH_LR_EL2_VINTID_MASK (0xffffffffULL << ICH_LR_EL2_VINTID_SHIFT)
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#define ICH_LR_EL2_PINTID_SHIFT 32
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#define ICH_LR_EL2_PINTID_LENGTH 10
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#define ICH_LR_EL2_PINTID_MASK (0x3ffULL << ICH_LR_EL2_PINTID_SHIFT)
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/* Note that EOI shares with the top bit of the pINTID field */
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#define ICH_LR_EL2_EOI (1ULL << 41)
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#define ICH_LR_EL2_PRIORITY_SHIFT 48
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#define ICH_LR_EL2_PRIORITY_LENGTH 8
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#define ICH_LR_EL2_PRIORITY_MASK (0xffULL << ICH_LR_EL2_PRIORITY_SHIFT)
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#define ICH_LR_EL2_GROUP (1ULL << 60)
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#define ICH_LR_EL2_HW (1ULL << 61)
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#define ICH_LR_EL2_STATE_SHIFT 62
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#define ICH_LR_EL2_STATE_LENGTH 2
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#define ICH_LR_EL2_STATE_MASK (3ULL << ICH_LR_EL2_STATE_SHIFT)
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/* values for the state field: */
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#define ICH_LR_EL2_STATE_INVALID 0
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#define ICH_LR_EL2_STATE_PENDING 1
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#define ICH_LR_EL2_STATE_ACTIVE 2
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#define ICH_LR_EL2_STATE_ACTIVE_PENDING 3
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#define ICH_LR_EL2_STATE_PENDING_BIT (1ULL << ICH_LR_EL2_STATE_SHIFT)
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#define ICH_LR_EL2_STATE_ACTIVE_BIT (2ULL << ICH_LR_EL2_STATE_SHIFT)
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#define ICH_MISR_EL2_EOI (1U << 0)
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#define ICH_MISR_EL2_U (1U << 1)
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#define ICH_MISR_EL2_LRENP (1U << 2)
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#define ICH_MISR_EL2_NP (1U << 3)
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#define ICH_MISR_EL2_VGRP0E (1U << 4)
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#define ICH_MISR_EL2_VGRP0D (1U << 5)
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#define ICH_MISR_EL2_VGRP1E (1U << 6)
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#define ICH_MISR_EL2_VGRP1D (1U << 7)
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#define ICH_VTR_EL2_LISTREGS_SHIFT 0
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#define ICH_VTR_EL2_TDS (1U << 19)
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#define ICH_VTR_EL2_NV4 (1U << 20)
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#define ICH_VTR_EL2_A3V (1U << 21)
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#define ICH_VTR_EL2_SEIS (1U << 22)
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#define ICH_VTR_EL2_IDBITS_SHIFT 23
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#define ICH_VTR_EL2_PREBITS_SHIFT 26
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#define ICH_VTR_EL2_PRIBITS_SHIFT 29
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/* Special interrupt IDs */
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#define INTID_SECURE 1020
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#define INTID_NONSECURE 1021
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#define INTID_SPURIOUS 1023
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/* Functions internal to the emulated GICv3 */
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/**
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* gicv3_redist_update:
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* @cs: GICv3CPUState for this redistributor
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*
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* Recalculate the highest priority pending interrupt after a
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* change to redistributor state, and inform the CPU accordingly.
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*/
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void gicv3_redist_update(GICv3CPUState *cs);
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/**
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* gicv3_update:
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* @s: GICv3State
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* @start: first interrupt whose state changed
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* @len: length of the range of interrupts whose state changed
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*
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* Recalculate the highest priority pending interrupts after a
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* change to the distributor state affecting @len interrupts
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* starting at @start, and inform the CPUs accordingly.
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*/
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void gicv3_update(GICv3State *s, int start, int len);
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/**
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* gicv3_full_update_noirqset:
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* @s: GICv3State
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*
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* Recalculate the cached information about highest priority
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* pending interrupts, but don't inform the CPUs. This should be
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* called after an incoming migration has loaded new state.
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*/
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void gicv3_full_update_noirqset(GICv3State *s);
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/**
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* gicv3_full_update:
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* @s: GICv3State
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*
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* Recalculate the highest priority pending interrupts after
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* a change that could affect the status of all interrupts,
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* and inform the CPUs accordingly.
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*/
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void gicv3_full_update(GICv3State *s);
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MemTxResult gicv3_dist_read(void *opaque, hwaddr offset, uint64_t *data,
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unsigned size, MemTxAttrs attrs);
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MemTxResult gicv3_dist_write(void *opaque, hwaddr addr, uint64_t data,
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unsigned size, MemTxAttrs attrs);
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MemTxResult gicv3_redist_read(void *opaque, hwaddr offset, uint64_t *data,
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unsigned size, MemTxAttrs attrs);
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MemTxResult gicv3_redist_write(void *opaque, hwaddr offset, uint64_t data,
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unsigned size, MemTxAttrs attrs);
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void gicv3_dist_set_irq(GICv3State *s, int irq, int level);
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void gicv3_redist_set_irq(GICv3CPUState *cs, int irq, int level);
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void gicv3_redist_send_sgi(GICv3CPUState *cs, int grp, int irq, bool ns);
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void gicv3_init_cpuif(GICv3State *s);
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/**
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* gicv3_cpuif_update:
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* @cs: GICv3CPUState for the CPU to update
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*
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* Recalculate whether to assert the IRQ or FIQ lines after a change
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* to the current highest priority pending interrupt, the CPU's
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* current running priority or the CPU's current exception level or
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* security state.
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*/
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void gicv3_cpuif_update(GICv3CPUState *cs);
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static inline uint32_t gicv3_iidr(void)
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{
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/* Return the Implementer Identification Register value
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* for the emulated GICv3, as reported in GICD_IIDR and GICR_IIDR.
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*
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* We claim to be an ARM r0p0 with a zero ProductID.
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* This is the same as an r0p0 GIC-500.
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*/
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return 0x43b;
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}
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static inline uint32_t gicv3_idreg(int regoffset)
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{
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/* Return the value of the CoreSight ID register at the specified
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* offset from the first ID register (as found in the distributor
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* and redistributor register banks).
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* These values indicate an ARM implementation of a GICv3.
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*/
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static const uint8_t gicd_ids[] = {
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0x44, 0x00, 0x00, 0x00, 0x92, 0xB4, 0x3B, 0x00, 0x0D, 0xF0, 0x05, 0xB1
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};
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return gicd_ids[regoffset / 4];
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}
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/**
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* gicv3_irq_group:
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*
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* Return the group which this interrupt is configured as (GICV3_G0,
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* GICV3_G1 or GICV3_G1NS).
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*/
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static inline int gicv3_irq_group(GICv3State *s, GICv3CPUState *cs, int irq)
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{
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bool grpbit, grpmodbit;
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if (irq < GIC_INTERNAL) {
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grpbit = extract32(cs->gicr_igroupr0, irq, 1);
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grpmodbit = extract32(cs->gicr_igrpmodr0, irq, 1);
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} else {
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grpbit = gicv3_gicd_group_test(s, irq);
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grpmodbit = gicv3_gicd_grpmod_test(s, irq);
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}
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if (grpbit) {
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return GICV3_G1NS;
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}
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if (s->gicd_ctlr & GICD_CTLR_DS) {
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return GICV3_G0;
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}
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return grpmodbit ? GICV3_G1 : GICV3_G0;
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}
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/**
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* gicv3_redist_affid:
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*
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* Return the 32-bit affinity ID of the CPU connected to this redistributor
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*/
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static inline uint32_t gicv3_redist_affid(GICv3CPUState *cs)
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{
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return cs->gicr_typer >> 32;
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}
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/**
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* gicv3_cache_target_cpustate:
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*
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* Update the cached CPU state corresponding to the target for this interrupt
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* (which is kept in s->gicd_irouter_target[]).
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*/
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static inline void gicv3_cache_target_cpustate(GICv3State *s, int irq)
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{
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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 */
|