| Message ID | 20210805223002.144855-2-shashi.mallela@linaro.org |
|---|---|
| State | Superseded |
| Headers | show |
| Series | GICv3 LPI and ITS feature implementation | expand |
On 06/08/2021 00:29, Shashi Mallela wrote: > Added register definitions relevant to ITS,implemented overall > ITS device framework with stubs for ITS control and translater > regions read/write,extended ITS common to handle mmio init between > existing kvm device and newer qemu device. > > Signed-off-by: Shashi Mallela <shashi.mallela@linaro.org> > Reviewed-by: Peter Maydell <peter.maydell@linaro.org> > Reviewed-by: Eric Auger <eric.auger@redhat.com> > --- > hw/intc/arm_gicv3_its.c | 245 +++++++++++++++++++++++++ > hw/intc/arm_gicv3_its_common.c | 7 +- > hw/intc/arm_gicv3_its_kvm.c | 2 +- > hw/intc/gicv3_internal.h | 96 +++++++++- > hw/intc/meson.build | 1 + > include/hw/intc/arm_gicv3_its_common.h | 9 +- > 6 files changed, 346 insertions(+), 14 deletions(-) > create mode 100644 hw/intc/arm_gicv3_its.c > > diff --git a/hw/intc/arm_gicv3_its.c b/hw/intc/arm_gicv3_its.c > new file mode 100644 > index 0000000000..2286b3f757 > --- /dev/null > +++ b/hw/intc/arm_gicv3_its.c > @@ -0,0 +1,245 @@ > +/* > + * ITS emulation for a GICv3-based system > + * > + * Copyright Linaro.org 2021 > + * > + * Authors: > + * Shashi Mallela <shashi.mallela@linaro.org> > + * > + * This work is licensed under the terms of the GNU GPL, version 2 or (at your > + * option) any later version. See the COPYING file in the top-level directory. > + * > + */ > + > +#include "qemu/osdep.h" > +#include "qemu/log.h" > +#include "hw/qdev-properties.h" > +#include "hw/intc/arm_gicv3_its_common.h" > +#include "gicv3_internal.h" > +#include "qom/object.h" > +#include "qapi/error.h" > + > +typedef struct GICv3ITSClass GICv3ITSClass; > +/* This is reusing the GICv3ITSState typedef from ARM_GICV3_ITS_COMMON */ > +DECLARE_OBJ_CHECKERS(GICv3ITSState, GICv3ITSClass, > + ARM_GICV3_ITS, TYPE_ARM_GICV3_ITS) > + > +struct GICv3ITSClass { > + GICv3ITSCommonClass parent_class; > + void (*parent_reset)(DeviceState *dev); > +}; > + > +static MemTxResult gicv3_its_translation_write(void *opaque, hwaddr offset, > + uint64_t data, unsigned size, > + MemTxAttrs attrs) > +{ > + MemTxResult result = MEMTX_OK; > + > + return result; > +} > + > +static MemTxResult its_writel(GICv3ITSState *s, hwaddr offset, > + uint64_t value, MemTxAttrs attrs) > +{ > + MemTxResult result = MEMTX_OK; > + > + return result; > +} > + > +static MemTxResult its_readl(GICv3ITSState *s, hwaddr offset, > + uint64_t *data, MemTxAttrs attrs) > +{ > + MemTxResult result = MEMTX_OK; > + > + return result; > +} > + > +static MemTxResult its_writell(GICv3ITSState *s, hwaddr offset, > + uint64_t value, MemTxAttrs attrs) > +{ > + MemTxResult result = MEMTX_OK; > + > + return result; > +} > + > +static MemTxResult its_readll(GICv3ITSState *s, hwaddr offset, > + uint64_t *data, MemTxAttrs attrs) > +{ > + MemTxResult result = MEMTX_OK; > + > + return result; > +} > + > +static MemTxResult gicv3_its_read(void *opaque, hwaddr offset, uint64_t *data, > + unsigned size, MemTxAttrs attrs) > +{ > + GICv3ITSState *s = (GICv3ITSState *)opaque; > + MemTxResult result; > + > + switch (size) { > + case 4: > + result = its_readl(s, offset, data, attrs); > + break; > + case 8: > + result = its_readll(s, offset, data, attrs); > + break; > + default: > + result = MEMTX_ERROR; > + break; > + } > + > + if (result == MEMTX_ERROR) { > + qemu_log_mask(LOG_GUEST_ERROR, > + "%s: invalid guest read at offset " TARGET_FMT_plx > + "size %u\n", __func__, offset, size); > + /* > + * The spec requires that reserved registers are RAZ/WI; > + * so use MEMTX_ERROR returns from leaf functions as a way to > + * trigger the guest-error logging but don't return it to > + * the caller, or we'll cause a spurious guest data abort. > + */ > + result = MEMTX_OK; > + *data = 0; > + } > + return result; > +} > + > +static MemTxResult gicv3_its_write(void *opaque, hwaddr offset, uint64_t data, > + unsigned size, MemTxAttrs attrs) > +{ > + GICv3ITSState *s = (GICv3ITSState *)opaque; > + MemTxResult result; > + > + switch (size) { > + case 4: > + result = its_writel(s, offset, data, attrs); > + break; > + case 8: > + result = its_writell(s, offset, data, attrs); > + break; > + default: > + result = MEMTX_ERROR; > + break; > + } > + > + if (result == MEMTX_ERROR) { > + qemu_log_mask(LOG_GUEST_ERROR, > + "%s: invalid guest write at offset " TARGET_FMT_plx > + "size %u\n", __func__, offset, size); > + /* > + * The spec requires that reserved registers are RAZ/WI; > + * so use MEMTX_ERROR returns from leaf functions as a way to > + * trigger the guest-error logging but don't return it to > + * the caller, or we'll cause a spurious guest data abort. > + */ > + result = MEMTX_OK; > + } > + return result; > +} > + > +static const MemoryRegionOps gicv3_its_control_ops = { > + .read_with_attrs = gicv3_its_read, > + .write_with_attrs = gicv3_its_write, > + .valid.min_access_size = 4, > + .valid.max_access_size = 8, > + .impl.min_access_size = 4, > + .impl.max_access_size = 8, > + .endianness = DEVICE_NATIVE_ENDIAN, > +}; > + > +static const MemoryRegionOps gicv3_its_translation_ops = { > + .write_with_attrs = gicv3_its_translation_write, > + .valid.min_access_size = 2, > + .valid.max_access_size = 4, > + .impl.min_access_size = 2, > + .impl.max_access_size = 4, > + .endianness = DEVICE_NATIVE_ENDIAN, > +}; > + > +static void gicv3_arm_its_realize(DeviceState *dev, Error **errp) > +{ > + GICv3ITSState *s = ARM_GICV3_ITS_COMMON(dev); > + int i; > + > + for (i = 0; i < s->gicv3->num_cpu; i++) { > + if (!(s->gicv3->cpu[i].gicr_typer & GICR_TYPER_PLPIS)) { > + error_setg(errp, "Physical LPI not supported by CPU %d", i); > + return; > + } > + } > + > + gicv3_its_init_mmio(s, &gicv3_its_control_ops, &gicv3_its_translation_ops); > + > + /* set the ITS default features supported */ > + s->typer = FIELD_DP64(s->typer, GITS_TYPER, PHYSICAL, > + GITS_TYPE_PHYSICAL); > + s->typer = FIELD_DP64(s->typer, GITS_TYPER, ITT_ENTRY_SIZE, > + ITS_ITT_ENTRY_SIZE - 1); > + s->typer = FIELD_DP64(s->typer, GITS_TYPER, IDBITS, ITS_IDBITS); > + s->typer = FIELD_DP64(s->typer, GITS_TYPER, DEVBITS, ITS_DEVBITS); > + s->typer = FIELD_DP64(s->typer, GITS_TYPER, CIL, 1); > + s->typer = FIELD_DP64(s->typer, GITS_TYPER, CIDBITS, ITS_CIDBITS); > +} > + > +static void gicv3_its_reset(DeviceState *dev) > +{ > + GICv3ITSState *s = ARM_GICV3_ITS_COMMON(dev); > + GICv3ITSClass *c = ARM_GICV3_ITS_GET_CLASS(s); > + > + c->parent_reset(dev); > + > + /* Quiescent bit reset to 1 */ > + s->ctlr = FIELD_DP32(s->ctlr, GITS_CTLR, QUIESCENT, 1); > + > + /* > + * setting GITS_BASER0.Type = 0b001 (Device) > + * GITS_BASER1.Type = 0b100 (Collection Table) > + * GITS_BASER<n>.Type,where n = 3 to 7 are 0b00 (Unimplemented) > + * GITS_BASER<0,1>.Page_Size = 64KB > + * and default translation table entry size to 16 bytes > + */ > + s->baser[0] = FIELD_DP64(s->baser[0], GITS_BASER, TYPE, > + GITS_BASER_TYPE_DEVICE); > + s->baser[0] = FIELD_DP64(s->baser[0], GITS_BASER, PAGESIZE, > + GITS_BASER_PAGESIZE_64K); > + s->baser[0] = FIELD_DP64(s->baser[0], GITS_BASER, ENTRYSIZE, > + GITS_DTE_SIZE - 1); > + > + s->baser[1] = FIELD_DP64(s->baser[1], GITS_BASER, TYPE, > + GITS_BASER_TYPE_COLLECTION); > + s->baser[1] = FIELD_DP64(s->baser[1], GITS_BASER, PAGESIZE, > + GITS_BASER_PAGESIZE_64K); > + s->baser[1] = FIELD_DP64(s->baser[1], GITS_BASER, ENTRYSIZE, > + GITS_CTE_SIZE - 1); > +} > + > +static Property gicv3_its_props[] = { > + DEFINE_PROP_LINK("parent-gicv3", GICv3ITSState, gicv3, "arm-gicv3", > + GICv3State *), > + DEFINE_PROP_END_OF_LIST(), > +}; > + > +static void gicv3_its_class_init(ObjectClass *klass, void *data) > +{ > + DeviceClass *dc = DEVICE_CLASS(klass); > + GICv3ITSClass *ic = ARM_GICV3_ITS_CLASS(klass); > + > + dc->realize = gicv3_arm_its_realize; > + device_class_set_props(dc, gicv3_its_props); > + device_class_set_parent_reset(dc, gicv3_its_reset, &ic->parent_reset); > +} > + > +static const TypeInfo gicv3_its_info = { > + .name = TYPE_ARM_GICV3_ITS, > + .parent = TYPE_ARM_GICV3_ITS_COMMON, > + .instance_size = sizeof(GICv3ITSState), > + .class_init = gicv3_its_class_init, > + .class_size = sizeof(GICv3ITSClass), > +}; > + > +static void gicv3_its_register_types(void) > +{ > + type_register_static(&gicv3_its_info); > +} > + > +type_init(gicv3_its_register_types) > diff --git a/hw/intc/arm_gicv3_its_common.c b/hw/intc/arm_gicv3_its_common.c > index 66c4c6a188..7d7f3882e7 100644 > --- a/hw/intc/arm_gicv3_its_common.c > +++ b/hw/intc/arm_gicv3_its_common.c > @@ -50,6 +50,8 @@ static int gicv3_its_post_load(void *opaque, int version_id) > > static const VMStateDescription vmstate_its = { > .name = "arm_gicv3_its", > + .version_id = 1, > + .minimum_version_id = 1, > .pre_save = gicv3_its_pre_save, > .post_load = gicv3_its_post_load, > .priority = MIG_PRI_GICV3_ITS, > @@ -99,14 +101,15 @@ static const MemoryRegionOps gicv3_its_trans_ops = { > .endianness = DEVICE_NATIVE_ENDIAN, > }; > > -void gicv3_its_init_mmio(GICv3ITSState *s, const MemoryRegionOps *ops) > +void gicv3_its_init_mmio(GICv3ITSState *s, const MemoryRegionOps *ops, > + const MemoryRegionOps *tops) > { > SysBusDevice *sbd = SYS_BUS_DEVICE(s); > > memory_region_init_io(&s->iomem_its_cntrl, OBJECT(s), ops, s, > "control", ITS_CONTROL_SIZE); > memory_region_init_io(&s->iomem_its_translation, OBJECT(s), > - &gicv3_its_trans_ops, s, > + tops ? tops : &gicv3_its_trans_ops, s, > "translation", ITS_TRANS_SIZE); > > /* Our two regions are always adjacent, therefore we now combine them > diff --git a/hw/intc/arm_gicv3_its_kvm.c b/hw/intc/arm_gicv3_its_kvm.c > index b554d2ede0..0b4cbed28b 100644 > --- a/hw/intc/arm_gicv3_its_kvm.c > +++ b/hw/intc/arm_gicv3_its_kvm.c > @@ -106,7 +106,7 @@ static void kvm_arm_its_realize(DeviceState *dev, Error **errp) > kvm_arm_register_device(&s->iomem_its_cntrl, -1, KVM_DEV_ARM_VGIC_GRP_ADDR, > KVM_VGIC_ITS_ADDR_TYPE, s->dev_fd, 0); > > - gicv3_its_init_mmio(s, NULL); > + gicv3_its_init_mmio(s, NULL, NULL); > > if (!kvm_device_check_attr(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_ITS_REGS, > GITS_CTLR)) { > diff --git a/hw/intc/gicv3_internal.h b/hw/intc/gicv3_internal.h > index 05303a55c8..b99bf9db46 100644 > --- a/hw/intc/gicv3_internal.h > +++ b/hw/intc/gicv3_internal.h > @@ -24,6 +24,7 @@ > #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 */ > @@ -67,6 +68,9 @@ > #define GICD_CTLR_E1NWF (1U << 7) > #define GICD_CTLR_RWP (1U << 31) > > +/* 16 bits EventId */ > +#define GICD_TYPER_IDBITS 0xf > + > /* > * Redistributor frame offsets from RD_base > */ > @@ -122,17 +126,17 @@ > #define GICR_WAKER_ProcessorSleep (1U << 1) > #define GICR_WAKER_ChildrenAsleep (1U << 2) > > -#define GICR_PROPBASER_OUTER_CACHEABILITY_MASK (7ULL << 56) > -#define GICR_PROPBASER_ADDR_MASK (0xfffffffffULL << 12) > -#define GICR_PROPBASER_SHAREABILITY_MASK (3U << 10) > -#define GICR_PROPBASER_CACHEABILITY_MASK (7U << 7) > -#define GICR_PROPBASER_IDBITS_MASK (0x1f) > +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) > > -#define GICR_PENDBASER_PTZ (1ULL << 62) > -#define GICR_PENDBASER_OUTER_CACHEABILITY_MASK (7ULL << 56) > -#define GICR_PENDBASER_ADDR_MASK (0xffffffffULL << 16) > -#define GICR_PENDBASER_SHAREABILITY_MASK (3U << 10) > -#define GICR_PENDBASER_CACHEABILITY_MASK (7U << 7) > +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 ICC_CTLR_EL1_CBPR (1U << 0) > #define ICC_CTLR_EL1_EOIMODE (1U << 1) > @@ -239,6 +243,78 @@ > #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_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_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 > + > +/** > + * 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 > + > +/* 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) > + > +/* > + * 8 bytes Collection Table Entry size > + * Valid = 1 bit,RDBase = 36 bits(considering max RDBASE) > + */ > +#define GITS_CTE_SIZE (0x8ULL) > + > /* Special interrupt IDs */ > #define INTID_SECURE 1020 > #define INTID_NONSECURE 1021 > diff --git a/hw/intc/meson.build b/hw/intc/meson.build > index 6e52a166e3..4dcfea6aa8 100644 > --- a/hw/intc/meson.build > +++ b/hw/intc/meson.build > @@ -8,6 +8,7 @@ softmmu_ss.add(when: 'CONFIG_ARM_GIC', if_true: files( > 'arm_gicv3_dist.c', > 'arm_gicv3_its_common.c', > 'arm_gicv3_redist.c', > + 'arm_gicv3_its.c', > )) > softmmu_ss.add(when: 'CONFIG_ETRAXFS', if_true: files('etraxfs_pic.c')) > softmmu_ss.add(when: 'CONFIG_HEATHROW_PIC', if_true: files('heathrow_pic.c')) > diff --git a/include/hw/intc/arm_gicv3_its_common.h b/include/hw/intc/arm_gicv3_its_common.h > index 5a0952b404..65d1191db1 100644 > --- a/include/hw/intc/arm_gicv3_its_common.h > +++ b/include/hw/intc/arm_gicv3_its_common.h > @@ -25,17 +25,22 @@ > #include "hw/intc/arm_gicv3_common.h" > #include "qom/object.h" > > +#define TYPE_ARM_GICV3_ITS "arm-gicv3-its" > + > #define ITS_CONTROL_SIZE 0x10000 > #define ITS_TRANS_SIZE 0x10000 > #define ITS_SIZE (ITS_CONTROL_SIZE + ITS_TRANS_SIZE) > > #define GITS_CTLR 0x0 > #define GITS_IIDR 0x4 > +#define GITS_TYPER 0x8 > #define GITS_CBASER 0x80 > #define GITS_CWRITER 0x88 > #define GITS_CREADR 0x90 > #define GITS_BASER 0x100 > > +#define GITS_TRANSLATER 0x0040 > + > struct GICv3ITSState { > SysBusDevice parent_obj; > > @@ -52,6 +57,7 @@ struct GICv3ITSState { > /* Registers */ > uint32_t ctlr; > uint32_t iidr; > + uint64_t typer; > uint64_t cbaser; > uint64_t cwriter; > uint64_t creadr; > @@ -62,7 +68,8 @@ struct GICv3ITSState { > > typedef struct GICv3ITSState GICv3ITSState; > > -void gicv3_its_init_mmio(GICv3ITSState *s, const MemoryRegionOps *ops); > +void gicv3_its_init_mmio(GICv3ITSState *s, const MemoryRegionOps *ops, > + const MemoryRegionOps *tops); > > #define TYPE_ARM_GICV3_ITS_COMMON "arm-gicv3-its-common" > typedef struct GICv3ITSCommonClass GICv3ITSCommonClass; > Tested with in-review Zephyr ITS implementation at https://github.com/zephyrproject-rtos/zephyr/pull/37506 Tested-by: Neil Armstrong <narmstrong@baylibre.com>
diff --git a/hw/intc/arm_gicv3_its.c b/hw/intc/arm_gicv3_its.c new file mode 100644 index 0000000000..2286b3f757 --- /dev/null +++ b/hw/intc/arm_gicv3_its.c @@ -0,0 +1,245 @@ +/* + * ITS emulation for a GICv3-based system + * + * Copyright Linaro.org 2021 + * + * Authors: + * Shashi Mallela <shashi.mallela@linaro.org> + * + * This work is licensed under the terms of the GNU GPL, version 2 or (at your + * option) any later version. See the COPYING file in the top-level directory. + * + */ + +#include "qemu/osdep.h" +#include "qemu/log.h" +#include "hw/qdev-properties.h" +#include "hw/intc/arm_gicv3_its_common.h" +#include "gicv3_internal.h" +#include "qom/object.h" +#include "qapi/error.h" + +typedef struct GICv3ITSClass GICv3ITSClass; +/* This is reusing the GICv3ITSState typedef from ARM_GICV3_ITS_COMMON */ +DECLARE_OBJ_CHECKERS(GICv3ITSState, GICv3ITSClass, + ARM_GICV3_ITS, TYPE_ARM_GICV3_ITS) + +struct GICv3ITSClass { + GICv3ITSCommonClass parent_class; + void (*parent_reset)(DeviceState *dev); +}; + +static MemTxResult gicv3_its_translation_write(void *opaque, hwaddr offset, + uint64_t data, unsigned size, + MemTxAttrs attrs) +{ + MemTxResult result = MEMTX_OK; + + return result; +} + +static MemTxResult its_writel(GICv3ITSState *s, hwaddr offset, + uint64_t value, MemTxAttrs attrs) +{ + MemTxResult result = MEMTX_OK; + + return result; +} + +static MemTxResult its_readl(GICv3ITSState *s, hwaddr offset, + uint64_t *data, MemTxAttrs attrs) +{ + MemTxResult result = MEMTX_OK; + + return result; +} + +static MemTxResult its_writell(GICv3ITSState *s, hwaddr offset, + uint64_t value, MemTxAttrs attrs) +{ + MemTxResult result = MEMTX_OK; + + return result; +} + +static MemTxResult its_readll(GICv3ITSState *s, hwaddr offset, + uint64_t *data, MemTxAttrs attrs) +{ + MemTxResult result = MEMTX_OK; + + return result; +} + +static MemTxResult gicv3_its_read(void *opaque, hwaddr offset, uint64_t *data, + unsigned size, MemTxAttrs attrs) +{ + GICv3ITSState *s = (GICv3ITSState *)opaque; + MemTxResult result; + + switch (size) { + case 4: + result = its_readl(s, offset, data, attrs); + break; + case 8: + result = its_readll(s, offset, data, attrs); + break; + default: + result = MEMTX_ERROR; + break; + } + + if (result == MEMTX_ERROR) { + qemu_log_mask(LOG_GUEST_ERROR, + "%s: invalid guest read at offset " TARGET_FMT_plx + "size %u\n", __func__, offset, size); + /* + * The spec requires that reserved registers are RAZ/WI; + * so use MEMTX_ERROR returns from leaf functions as a way to + * trigger the guest-error logging but don't return it to + * the caller, or we'll cause a spurious guest data abort. + */ + result = MEMTX_OK; + *data = 0; + } + return result; +} + +static MemTxResult gicv3_its_write(void *opaque, hwaddr offset, uint64_t data, + unsigned size, MemTxAttrs attrs) +{ + GICv3ITSState *s = (GICv3ITSState *)opaque; + MemTxResult result; + + switch (size) { + case 4: + result = its_writel(s, offset, data, attrs); + break; + case 8: + result = its_writell(s, offset, data, attrs); + break; + default: + result = MEMTX_ERROR; + break; + } + + if (result == MEMTX_ERROR) { + qemu_log_mask(LOG_GUEST_ERROR, + "%s: invalid guest write at offset " TARGET_FMT_plx + "size %u\n", __func__, offset, size); + /* + * The spec requires that reserved registers are RAZ/WI; + * so use MEMTX_ERROR returns from leaf functions as a way to + * trigger the guest-error logging but don't return it to + * the caller, or we'll cause a spurious guest data abort. + */ + result = MEMTX_OK; + } + return result; +} + +static const MemoryRegionOps gicv3_its_control_ops = { + .read_with_attrs = gicv3_its_read, + .write_with_attrs = gicv3_its_write, + .valid.min_access_size = 4, + .valid.max_access_size = 8, + .impl.min_access_size = 4, + .impl.max_access_size = 8, + .endianness = DEVICE_NATIVE_ENDIAN, +}; + +static const MemoryRegionOps gicv3_its_translation_ops = { + .write_with_attrs = gicv3_its_translation_write, + .valid.min_access_size = 2, + .valid.max_access_size = 4, + .impl.min_access_size = 2, + .impl.max_access_size = 4, + .endianness = DEVICE_NATIVE_ENDIAN, +}; + +static void gicv3_arm_its_realize(DeviceState *dev, Error **errp) +{ + GICv3ITSState *s = ARM_GICV3_ITS_COMMON(dev); + int i; + + for (i = 0; i < s->gicv3->num_cpu; i++) { + if (!(s->gicv3->cpu[i].gicr_typer & GICR_TYPER_PLPIS)) { + error_setg(errp, "Physical LPI not supported by CPU %d", i); + return; + } + } + + gicv3_its_init_mmio(s, &gicv3_its_control_ops, &gicv3_its_translation_ops); + + /* set the ITS default features supported */ + s->typer = FIELD_DP64(s->typer, GITS_TYPER, PHYSICAL, + GITS_TYPE_PHYSICAL); + s->typer = FIELD_DP64(s->typer, GITS_TYPER, ITT_ENTRY_SIZE, + ITS_ITT_ENTRY_SIZE - 1); + s->typer = FIELD_DP64(s->typer, GITS_TYPER, IDBITS, ITS_IDBITS); + s->typer = FIELD_DP64(s->typer, GITS_TYPER, DEVBITS, ITS_DEVBITS); + s->typer = FIELD_DP64(s->typer, GITS_TYPER, CIL, 1); + s->typer = FIELD_DP64(s->typer, GITS_TYPER, CIDBITS, ITS_CIDBITS); +} + +static void gicv3_its_reset(DeviceState *dev) +{ + GICv3ITSState *s = ARM_GICV3_ITS_COMMON(dev); + GICv3ITSClass *c = ARM_GICV3_ITS_GET_CLASS(s); + + c->parent_reset(dev); + + /* Quiescent bit reset to 1 */ + s->ctlr = FIELD_DP32(s->ctlr, GITS_CTLR, QUIESCENT, 1); + + /* + * setting GITS_BASER0.Type = 0b001 (Device) + * GITS_BASER1.Type = 0b100 (Collection Table) + * GITS_BASER<n>.Type,where n = 3 to 7 are 0b00 (Unimplemented) + * GITS_BASER<0,1>.Page_Size = 64KB + * and default translation table entry size to 16 bytes + */ + s->baser[0] = FIELD_DP64(s->baser[0], GITS_BASER, TYPE, + GITS_BASER_TYPE_DEVICE); + s->baser[0] = FIELD_DP64(s->baser[0], GITS_BASER, PAGESIZE, + GITS_BASER_PAGESIZE_64K); + s->baser[0] = FIELD_DP64(s->baser[0], GITS_BASER, ENTRYSIZE, + GITS_DTE_SIZE - 1); + + s->baser[1] = FIELD_DP64(s->baser[1], GITS_BASER, TYPE, + GITS_BASER_TYPE_COLLECTION); + s->baser[1] = FIELD_DP64(s->baser[1], GITS_BASER, PAGESIZE, + GITS_BASER_PAGESIZE_64K); + s->baser[1] = FIELD_DP64(s->baser[1], GITS_BASER, ENTRYSIZE, + GITS_CTE_SIZE - 1); +} + +static Property gicv3_its_props[] = { + DEFINE_PROP_LINK("parent-gicv3", GICv3ITSState, gicv3, "arm-gicv3", + GICv3State *), + DEFINE_PROP_END_OF_LIST(), +}; + +static void gicv3_its_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + GICv3ITSClass *ic = ARM_GICV3_ITS_CLASS(klass); + + dc->realize = gicv3_arm_its_realize; + device_class_set_props(dc, gicv3_its_props); + device_class_set_parent_reset(dc, gicv3_its_reset, &ic->parent_reset); +} + +static const TypeInfo gicv3_its_info = { + .name = TYPE_ARM_GICV3_ITS, + .parent = TYPE_ARM_GICV3_ITS_COMMON, + .instance_size = sizeof(GICv3ITSState), + .class_init = gicv3_its_class_init, + .class_size = sizeof(GICv3ITSClass), +}; + +static void gicv3_its_register_types(void) +{ + type_register_static(&gicv3_its_info); +} + +type_init(gicv3_its_register_types) diff --git a/hw/intc/arm_gicv3_its_common.c b/hw/intc/arm_gicv3_its_common.c index 66c4c6a188..7d7f3882e7 100644 --- a/hw/intc/arm_gicv3_its_common.c +++ b/hw/intc/arm_gicv3_its_common.c @@ -50,6 +50,8 @@ static int gicv3_its_post_load(void *opaque, int version_id) static const VMStateDescription vmstate_its = { .name = "arm_gicv3_its", + .version_id = 1, + .minimum_version_id = 1, .pre_save = gicv3_its_pre_save, .post_load = gicv3_its_post_load, .priority = MIG_PRI_GICV3_ITS, @@ -99,14 +101,15 @@ static const MemoryRegionOps gicv3_its_trans_ops = { .endianness = DEVICE_NATIVE_ENDIAN, }; -void gicv3_its_init_mmio(GICv3ITSState *s, const MemoryRegionOps *ops) +void gicv3_its_init_mmio(GICv3ITSState *s, const MemoryRegionOps *ops, + const MemoryRegionOps *tops) { SysBusDevice *sbd = SYS_BUS_DEVICE(s); memory_region_init_io(&s->iomem_its_cntrl, OBJECT(s), ops, s, "control", ITS_CONTROL_SIZE); memory_region_init_io(&s->iomem_its_translation, OBJECT(s), - &gicv3_its_trans_ops, s, + tops ? tops : &gicv3_its_trans_ops, s, "translation", ITS_TRANS_SIZE); /* Our two regions are always adjacent, therefore we now combine them diff --git a/hw/intc/arm_gicv3_its_kvm.c b/hw/intc/arm_gicv3_its_kvm.c index b554d2ede0..0b4cbed28b 100644 --- a/hw/intc/arm_gicv3_its_kvm.c +++ b/hw/intc/arm_gicv3_its_kvm.c @@ -106,7 +106,7 @@ static void kvm_arm_its_realize(DeviceState *dev, Error **errp) kvm_arm_register_device(&s->iomem_its_cntrl, -1, KVM_DEV_ARM_VGIC_GRP_ADDR, KVM_VGIC_ITS_ADDR_TYPE, s->dev_fd, 0); - gicv3_its_init_mmio(s, NULL); + gicv3_its_init_mmio(s, NULL, NULL); if (!kvm_device_check_attr(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_ITS_REGS, GITS_CTLR)) { diff --git a/hw/intc/gicv3_internal.h b/hw/intc/gicv3_internal.h index 05303a55c8..b99bf9db46 100644 --- a/hw/intc/gicv3_internal.h +++ b/hw/intc/gicv3_internal.h @@ -24,6 +24,7 @@ #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 */ @@ -67,6 +68,9 @@ #define GICD_CTLR_E1NWF (1U << 7) #define GICD_CTLR_RWP (1U << 31) +/* 16 bits EventId */ +#define GICD_TYPER_IDBITS 0xf + /* * Redistributor frame offsets from RD_base */ @@ -122,17 +126,17 @@ #define GICR_WAKER_ProcessorSleep (1U << 1) #define GICR_WAKER_ChildrenAsleep (1U << 2) -#define GICR_PROPBASER_OUTER_CACHEABILITY_MASK (7ULL << 56) -#define GICR_PROPBASER_ADDR_MASK (0xfffffffffULL << 12) -#define GICR_PROPBASER_SHAREABILITY_MASK (3U << 10) -#define GICR_PROPBASER_CACHEABILITY_MASK (7U << 7) -#define GICR_PROPBASER_IDBITS_MASK (0x1f) +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) -#define GICR_PENDBASER_PTZ (1ULL << 62) -#define GICR_PENDBASER_OUTER_CACHEABILITY_MASK (7ULL << 56) -#define GICR_PENDBASER_ADDR_MASK (0xffffffffULL << 16) -#define GICR_PENDBASER_SHAREABILITY_MASK (3U << 10) -#define GICR_PENDBASER_CACHEABILITY_MASK (7U << 7) +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 ICC_CTLR_EL1_CBPR (1U << 0) #define ICC_CTLR_EL1_EOIMODE (1U << 1) @@ -239,6 +243,78 @@ #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_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_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 + +/** + * 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 + +/* 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) + +/* + * 8 bytes Collection Table Entry size + * Valid = 1 bit,RDBase = 36 bits(considering max RDBASE) + */ +#define GITS_CTE_SIZE (0x8ULL) + /* Special interrupt IDs */ #define INTID_SECURE 1020 #define INTID_NONSECURE 1021 diff --git a/hw/intc/meson.build b/hw/intc/meson.build index 6e52a166e3..4dcfea6aa8 100644 --- a/hw/intc/meson.build +++ b/hw/intc/meson.build @@ -8,6 +8,7 @@ softmmu_ss.add(when: 'CONFIG_ARM_GIC', if_true: files( 'arm_gicv3_dist.c', 'arm_gicv3_its_common.c', 'arm_gicv3_redist.c', + 'arm_gicv3_its.c', )) softmmu_ss.add(when: 'CONFIG_ETRAXFS', if_true: files('etraxfs_pic.c')) softmmu_ss.add(when: 'CONFIG_HEATHROW_PIC', if_true: files('heathrow_pic.c')) diff --git a/include/hw/intc/arm_gicv3_its_common.h b/include/hw/intc/arm_gicv3_its_common.h index 5a0952b404..65d1191db1 100644 --- a/include/hw/intc/arm_gicv3_its_common.h +++ b/include/hw/intc/arm_gicv3_its_common.h @@ -25,17 +25,22 @@ #include "hw/intc/arm_gicv3_common.h" #include "qom/object.h" +#define TYPE_ARM_GICV3_ITS "arm-gicv3-its" + #define ITS_CONTROL_SIZE 0x10000 #define ITS_TRANS_SIZE 0x10000 #define ITS_SIZE (ITS_CONTROL_SIZE + ITS_TRANS_SIZE) #define GITS_CTLR 0x0 #define GITS_IIDR 0x4 +#define GITS_TYPER 0x8 #define GITS_CBASER 0x80 #define GITS_CWRITER 0x88 #define GITS_CREADR 0x90 #define GITS_BASER 0x100 +#define GITS_TRANSLATER 0x0040 + struct GICv3ITSState { SysBusDevice parent_obj; @@ -52,6 +57,7 @@ struct GICv3ITSState { /* Registers */ uint32_t ctlr; uint32_t iidr; + uint64_t typer; uint64_t cbaser; uint64_t cwriter; uint64_t creadr; @@ -62,7 +68,8 @@ struct GICv3ITSState { typedef struct GICv3ITSState GICv3ITSState; -void gicv3_its_init_mmio(GICv3ITSState *s, const MemoryRegionOps *ops); +void gicv3_its_init_mmio(GICv3ITSState *s, const MemoryRegionOps *ops, + const MemoryRegionOps *tops); #define TYPE_ARM_GICV3_ITS_COMMON "arm-gicv3-its-common" typedef struct GICv3ITSCommonClass GICv3ITSCommonClass;