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-rw-r--r--hw/intc/Makefile.objs1
-rw-r--r--hw/intc/arm_gicv3.c2
-rw-r--r--hw/intc/arm_gicv3_cpuif.c646
-rw-r--r--hw/intc/gicv3_internal.h1
4 files changed, 650 insertions, 0 deletions
diff --git a/hw/intc/Makefile.objs b/hw/intc/Makefile.objs
index 417db1162c..c7bbf88edf 100644
--- a/hw/intc/Makefile.objs
+++ b/hw/intc/Makefile.objs
@@ -35,3 +35,4 @@ obj-$(CONFIG_ALLWINNER_A10_PIC) += allwinner-a10-pic.o
obj-$(CONFIG_S390_FLIC) += s390_flic.o
obj-$(CONFIG_S390_FLIC_KVM) += s390_flic_kvm.o
obj-$(CONFIG_ASPEED_SOC) += aspeed_vic.o
+obj-$(CONFIG_ARM_GIC) += arm_gicv3_cpuif.o
diff --git a/hw/intc/arm_gicv3.c b/hw/intc/arm_gicv3.c
index 65ebca2e0a..8a6c647219 100644
--- a/hw/intc/arm_gicv3.c
+++ b/hw/intc/arm_gicv3.c
@@ -369,6 +369,8 @@ static void arm_gic_realize(DeviceState *dev, Error **errp)
}
gicv3_init_irqs_and_mmio(s, gicv3_set_irq, gic_ops);
+
+ gicv3_init_cpuif(s);
}
static void arm_gicv3_class_init(ObjectClass *klass, void *data)
diff --git a/hw/intc/arm_gicv3_cpuif.c b/hw/intc/arm_gicv3_cpuif.c
new file mode 100644
index 0000000000..e112646857
--- /dev/null
+++ b/hw/intc/arm_gicv3_cpuif.c
@@ -0,0 +1,646 @@
+/*
+ * ARM Generic Interrupt Controller v3
+ *
+ * Copyright (c) 2016 Linaro Limited
+ * Written by Peter Maydell
+ *
+ * This code is licensed under the GPL, version 2 or (at your option)
+ * any later version.
+ */
+
+/* This file contains the code for the system register interface
+ * portions of the GICv3.
+ */
+
+#include "qemu/osdep.h"
+#include "trace.h"
+#include "gicv3_internal.h"
+#include "cpu.h"
+
+static GICv3CPUState *icc_cs_from_env(CPUARMState *env)
+{
+ /* Given the CPU, find the right GICv3CPUState struct.
+ * Since we registered the CPU interface with the EL change hook as
+ * the opaque pointer, we can just directly get from the CPU to it.
+ */
+ return arm_get_el_change_hook_opaque(arm_env_get_cpu(env));
+}
+
+static bool gicv3_use_ns_bank(CPUARMState *env)
+{
+ /* Return true if we should use the NonSecure bank for a banked GIC
+ * CPU interface register. Note that this differs from the
+ * access_secure_reg() function because GICv3 banked registers are
+ * banked even for AArch64, unlike the other CPU system registers.
+ */
+ return !arm_is_secure_below_el3(env);
+}
+
+static uint64_t icc_pmr_read(CPUARMState *env, const ARMCPRegInfo *ri)
+{
+ GICv3CPUState *cs = icc_cs_from_env(env);
+ uint32_t value = cs->icc_pmr_el1;
+
+ if (arm_feature(env, ARM_FEATURE_EL3) && !arm_is_secure(env) &&
+ (env->cp15.scr_el3 & SCR_FIQ)) {
+ /* NS access and Group 0 is inaccessible to NS: return the
+ * NS view of the current priority
+ */
+ if (value & 0x80) {
+ /* Secure priorities not visible to NS */
+ value = 0;
+ } else if (value != 0xff) {
+ value = (value << 1) & 0xff;
+ }
+ }
+
+ trace_gicv3_icc_pmr_read(gicv3_redist_affid(cs), value);
+
+ return value;
+}
+
+static void icc_pmr_write(CPUARMState *env, const ARMCPRegInfo *ri,
+ uint64_t value)
+{
+ GICv3CPUState *cs = icc_cs_from_env(env);
+
+ trace_gicv3_icc_pmr_write(gicv3_redist_affid(cs), value);
+
+ value &= 0xff;
+
+ if (arm_feature(env, ARM_FEATURE_EL3) && !arm_is_secure(env) &&
+ (env->cp15.scr_el3 & SCR_FIQ)) {
+ /* NS access and Group 0 is inaccessible to NS: return the
+ * NS view of the current priority
+ */
+ if (!(cs->icc_pmr_el1 & 0x80)) {
+ /* Current PMR in the secure range, don't allow NS to change it */
+ return;
+ }
+ value = (value >> 1) & 0x80;
+ }
+ cs->icc_pmr_el1 = value;
+ gicv3_cpuif_update(cs);
+}
+
+static uint64_t icc_bpr_read(CPUARMState *env, const ARMCPRegInfo *ri)
+{
+ GICv3CPUState *cs = icc_cs_from_env(env);
+ int grp = (ri->crm == 8) ? GICV3_G0 : GICV3_G1;
+ bool satinc = false;
+ uint64_t bpr;
+
+ if (grp == GICV3_G1 && gicv3_use_ns_bank(env)) {
+ grp = GICV3_G1NS;
+ }
+
+ if (grp == GICV3_G1 && !arm_is_el3_or_mon(env) &&
+ (cs->icc_ctlr_el1[GICV3_S] & ICC_CTLR_EL1_CBPR)) {
+ /* CBPR_EL1S means secure EL1 or AArch32 EL3 !Mon BPR1 accesses
+ * modify BPR0
+ */
+ grp = GICV3_G0;
+ }
+
+ if (grp == GICV3_G1NS && arm_current_el(env) < 3 &&
+ (cs->icc_ctlr_el1[GICV3_NS] & ICC_CTLR_EL1_CBPR)) {
+ /* reads return bpr0 + 1 sat to 7, writes ignored */
+ grp = GICV3_G0;
+ satinc = true;
+ }
+
+ bpr = cs->icc_bpr[grp];
+ if (satinc) {
+ bpr++;
+ bpr = MIN(bpr, 7);
+ }
+
+ trace_gicv3_icc_bpr_read(gicv3_redist_affid(cs), bpr);
+
+ return bpr;
+}
+
+static void icc_bpr_write(CPUARMState *env, const ARMCPRegInfo *ri,
+ uint64_t value)
+{
+ GICv3CPUState *cs = icc_cs_from_env(env);
+ int grp = (ri->crm == 8) ? GICV3_G0 : GICV3_G1;
+
+ trace_gicv3_icc_pmr_write(gicv3_redist_affid(cs), value);
+
+ if (grp == GICV3_G1 && gicv3_use_ns_bank(env)) {
+ grp = GICV3_G1NS;
+ }
+
+ if (grp == GICV3_G1 && !arm_is_el3_or_mon(env) &&
+ (cs->icc_ctlr_el1[GICV3_S] & ICC_CTLR_EL1_CBPR)) {
+ /* CBPR_EL1S means secure EL1 or AArch32 EL3 !Mon BPR1 accesses
+ * modify BPR0
+ */
+ grp = GICV3_G0;
+ }
+
+ if (grp == GICV3_G1NS && arm_current_el(env) < 3 &&
+ (cs->icc_ctlr_el1[GICV3_NS] & ICC_CTLR_EL1_CBPR)) {
+ /* reads return bpr0 + 1 sat to 7, writes ignored */
+ return;
+ }
+
+ cs->icc_bpr[grp] = value & 7;
+ gicv3_cpuif_update(cs);
+}
+
+static uint64_t icc_ap_read(CPUARMState *env, const ARMCPRegInfo *ri)
+{
+ GICv3CPUState *cs = icc_cs_from_env(env);
+ uint64_t value;
+
+ int regno = ri->opc2 & 3;
+ int grp = ri->crm & 1 ? GICV3_G0 : GICV3_G1;
+
+ if (grp == GICV3_G1 && gicv3_use_ns_bank(env)) {
+ grp = GICV3_G1NS;
+ }
+
+ value = cs->icc_apr[grp][regno];
+
+ trace_gicv3_icc_ap_read(regno, gicv3_redist_affid(cs), value);
+ return value;
+}
+
+static void icc_ap_write(CPUARMState *env, const ARMCPRegInfo *ri,
+ uint64_t value)
+{
+ GICv3CPUState *cs = icc_cs_from_env(env);
+
+ int regno = ri->opc2 & 3;
+ int grp = ri->crm & 1 ? GICV3_G0 : GICV3_G1;
+
+ trace_gicv3_icc_ap_write(regno, gicv3_redist_affid(cs), value);
+
+ if (grp == GICV3_G1 && gicv3_use_ns_bank(env)) {
+ grp = GICV3_G1NS;
+ }
+
+ /* It's not possible to claim that a Non-secure interrupt is active
+ * at a priority outside the Non-secure range (128..255), since this
+ * would otherwise allow malicious NS code to block delivery of S interrupts
+ * by writing a bad value to these registers.
+ */
+ if (grp == GICV3_G1NS && regno < 2 && arm_feature(env, ARM_FEATURE_EL3)) {
+ return;
+ }
+
+ cs->icc_apr[grp][regno] = value & 0xFFFFFFFFU;
+ gicv3_cpuif_update(cs);
+}
+
+static uint64_t icc_igrpen_read(CPUARMState *env, const ARMCPRegInfo *ri)
+{
+ GICv3CPUState *cs = icc_cs_from_env(env);
+ int grp = ri->opc2 & 1 ? GICV3_G1 : GICV3_G0;
+ uint64_t value;
+
+ if (grp == GICV3_G1 && gicv3_use_ns_bank(env)) {
+ grp = GICV3_G1NS;
+ }
+
+ value = cs->icc_igrpen[grp];
+ trace_gicv3_icc_igrpen_read(gicv3_redist_affid(cs), value);
+ return value;
+}
+
+static void icc_igrpen_write(CPUARMState *env, const ARMCPRegInfo *ri,
+ uint64_t value)
+{
+ GICv3CPUState *cs = icc_cs_from_env(env);
+ int grp = ri->opc2 & 1 ? GICV3_G1 : GICV3_G0;
+
+ trace_gicv3_icc_igrpen_write(gicv3_redist_affid(cs), value);
+
+ if (grp == GICV3_G1 && gicv3_use_ns_bank(env)) {
+ grp = GICV3_G1NS;
+ }
+
+ cs->icc_igrpen[grp] = value & ICC_IGRPEN_ENABLE;
+ gicv3_cpuif_update(cs);
+}
+
+static uint64_t icc_igrpen1_el3_read(CPUARMState *env, const ARMCPRegInfo *ri)
+{
+ GICv3CPUState *cs = icc_cs_from_env(env);
+
+ /* IGRPEN1_EL3 bits 0 and 1 are r/w aliases into IGRPEN1_EL1 NS and S */
+ return cs->icc_igrpen[GICV3_G1NS] | (cs->icc_igrpen[GICV3_G1] << 1);
+}
+
+static void icc_igrpen1_el3_write(CPUARMState *env, const ARMCPRegInfo *ri,
+ uint64_t value)
+{
+ GICv3CPUState *cs = icc_cs_from_env(env);
+
+ trace_gicv3_icc_igrpen1_el3_write(gicv3_redist_affid(cs), value);
+
+ /* IGRPEN1_EL3 bits 0 and 1 are r/w aliases into IGRPEN1_EL1 NS and S */
+ cs->icc_igrpen[GICV3_G1NS] = extract32(value, 0, 1);
+ cs->icc_igrpen[GICV3_G1] = extract32(value, 1, 1);
+ gicv3_cpuif_update(cs);
+}
+
+static uint64_t icc_ctlr_el1_read(CPUARMState *env, const ARMCPRegInfo *ri)
+{
+ GICv3CPUState *cs = icc_cs_from_env(env);
+ int bank = gicv3_use_ns_bank(env) ? GICV3_NS : GICV3_S;
+ uint64_t value;
+
+ value = cs->icc_ctlr_el1[bank];
+ trace_gicv3_icc_ctlr_read(gicv3_redist_affid(cs), value);
+ return value;
+}
+
+static void icc_ctlr_el1_write(CPUARMState *env, const ARMCPRegInfo *ri,
+ uint64_t value)
+{
+ GICv3CPUState *cs = icc_cs_from_env(env);
+ int bank = gicv3_use_ns_bank(env) ? GICV3_NS : GICV3_S;
+ uint64_t mask;
+
+ trace_gicv3_icc_ctlr_write(gicv3_redist_affid(cs), value);
+
+ /* Only CBPR and EOIMODE can be RW;
+ * for us PMHE is RAZ/WI (we don't implement 1-of-N interrupts or
+ * the asseciated priority-based routing of them);
+ * if EL3 is implemented and GICD_CTLR.DS == 0, then PMHE and CBPR are RO.
+ */
+ if (arm_feature(env, ARM_FEATURE_EL3) &&
+ ((cs->gic->gicd_ctlr & GICD_CTLR_DS) == 0)) {
+ mask = ICC_CTLR_EL1_EOIMODE;
+ } else {
+ mask = ICC_CTLR_EL1_CBPR | ICC_CTLR_EL1_EOIMODE;
+ }
+
+ cs->icc_ctlr_el1[bank] &= ~mask;
+ cs->icc_ctlr_el1[bank] |= (value & mask);
+ gicv3_cpuif_update(cs);
+}
+
+
+static uint64_t icc_ctlr_el3_read(CPUARMState *env, const ARMCPRegInfo *ri)
+{
+ GICv3CPUState *cs = icc_cs_from_env(env);
+ uint64_t value;
+
+ value = cs->icc_ctlr_el3;
+ if (cs->icc_ctlr_el1[GICV3_NS] & ICC_CTLR_EL1_EOIMODE) {
+ value |= ICC_CTLR_EL3_EOIMODE_EL1NS;
+ }
+ if (cs->icc_ctlr_el1[GICV3_NS] & ICC_CTLR_EL1_CBPR) {
+ value |= ICC_CTLR_EL3_CBPR_EL1NS;
+ }
+ if (cs->icc_ctlr_el1[GICV3_NS] & ICC_CTLR_EL1_EOIMODE) {
+ value |= ICC_CTLR_EL3_EOIMODE_EL1S;
+ }
+ if (cs->icc_ctlr_el1[GICV3_NS] & ICC_CTLR_EL1_CBPR) {
+ value |= ICC_CTLR_EL3_CBPR_EL1S;
+ }
+
+ trace_gicv3_icc_ctlr_el3_read(gicv3_redist_affid(cs), value);
+ return value;
+}
+
+static void icc_ctlr_el3_write(CPUARMState *env, const ARMCPRegInfo *ri,
+ uint64_t value)
+{
+ GICv3CPUState *cs = icc_cs_from_env(env);
+ uint64_t mask;
+
+ trace_gicv3_icc_ctlr_el3_write(gicv3_redist_affid(cs), value);
+
+ /* *_EL1NS and *_EL1S bits are aliases into the ICC_CTLR_EL1 bits. */
+ cs->icc_ctlr_el1[GICV3_NS] &= (ICC_CTLR_EL1_CBPR | ICC_CTLR_EL1_EOIMODE);
+ if (value & ICC_CTLR_EL3_EOIMODE_EL1NS) {
+ cs->icc_ctlr_el1[GICV3_NS] |= ICC_CTLR_EL1_EOIMODE;
+ }
+ if (value & ICC_CTLR_EL3_CBPR_EL1NS) {
+ cs->icc_ctlr_el1[GICV3_NS] |= ICC_CTLR_EL1_CBPR;
+ }
+
+ cs->icc_ctlr_el1[GICV3_S] &= (ICC_CTLR_EL1_CBPR | ICC_CTLR_EL1_EOIMODE);
+ if (value & ICC_CTLR_EL3_EOIMODE_EL1S) {
+ cs->icc_ctlr_el1[GICV3_S] |= ICC_CTLR_EL1_EOIMODE;
+ }
+ if (value & ICC_CTLR_EL3_CBPR_EL1S) {
+ cs->icc_ctlr_el1[GICV3_S] |= ICC_CTLR_EL1_CBPR;
+ }
+
+ /* The only bit stored in icc_ctlr_el3 which is writeable is EOIMODE_EL3: */
+ mask = ICC_CTLR_EL3_EOIMODE_EL3;
+
+ cs->icc_ctlr_el3 &= ~mask;
+ cs->icc_ctlr_el3 |= (value & mask);
+ gicv3_cpuif_update(cs);
+}
+
+static CPAccessResult gicv3_irqfiq_access(CPUARMState *env,
+ const ARMCPRegInfo *ri, bool isread)
+{
+ CPAccessResult r = CP_ACCESS_OK;
+
+ if ((env->cp15.scr_el3 & (SCR_FIQ | SCR_IRQ)) == (SCR_FIQ | SCR_IRQ)) {
+ switch (arm_current_el(env)) {
+ case 1:
+ if (arm_is_secure_below_el3(env) ||
+ ((env->cp15.hcr_el2 & (HCR_IMO | HCR_FMO)) == 0)) {
+ r = CP_ACCESS_TRAP_EL3;
+ }
+ break;
+ case 2:
+ r = CP_ACCESS_TRAP_EL3;
+ break;
+ case 3:
+ if (!is_a64(env) && !arm_is_el3_or_mon(env)) {
+ r = CP_ACCESS_TRAP_EL3;
+ }
+ default:
+ g_assert_not_reached();
+ }
+ }
+
+ if (r == CP_ACCESS_TRAP_EL3 && !arm_el_is_aa64(env, 3)) {
+ r = CP_ACCESS_TRAP;
+ }
+ return r;
+}
+
+static CPAccessResult gicv3_fiq_access(CPUARMState *env,
+ const ARMCPRegInfo *ri, bool isread)
+{
+ CPAccessResult r = CP_ACCESS_OK;
+
+ if (env->cp15.scr_el3 & SCR_FIQ) {
+ switch (arm_current_el(env)) {
+ case 1:
+ if (arm_is_secure_below_el3(env) ||
+ ((env->cp15.hcr_el2 & HCR_FMO) == 0)) {
+ r = CP_ACCESS_TRAP_EL3;
+ }
+ break;
+ case 2:
+ r = CP_ACCESS_TRAP_EL3;
+ break;
+ case 3:
+ if (!is_a64(env) && !arm_is_el3_or_mon(env)) {
+ r = CP_ACCESS_TRAP_EL3;
+ }
+ default:
+ g_assert_not_reached();
+ }
+ }
+
+ if (r == CP_ACCESS_TRAP_EL3 && !arm_el_is_aa64(env, 3)) {
+ r = CP_ACCESS_TRAP;
+ }
+ return r;
+}
+
+static CPAccessResult gicv3_irq_access(CPUARMState *env,
+ const ARMCPRegInfo *ri, bool isread)
+{
+ CPAccessResult r = CP_ACCESS_OK;
+
+ if (env->cp15.scr_el3 & SCR_IRQ) {
+ switch (arm_current_el(env)) {
+ case 1:
+ if (arm_is_secure_below_el3(env) ||
+ ((env->cp15.hcr_el2 & HCR_IMO) == 0)) {
+ r = CP_ACCESS_TRAP_EL3;
+ }
+ break;
+ case 2:
+ r = CP_ACCESS_TRAP_EL3;
+ break;
+ case 3:
+ if (!is_a64(env) && !arm_is_el3_or_mon(env)) {
+ r = CP_ACCESS_TRAP_EL3;
+ }
+ break;
+ default:
+ g_assert_not_reached();
+ }
+ }
+
+ if (r == CP_ACCESS_TRAP_EL3 && !arm_el_is_aa64(env, 3)) {
+ r = CP_ACCESS_TRAP;
+ }
+ return r;
+}
+
+static void icc_reset(CPUARMState *env, const ARMCPRegInfo *ri)
+{
+ GICv3CPUState *cs = icc_cs_from_env(env);
+
+ cs->icc_ctlr_el1[GICV3_S] = ICC_CTLR_EL1_A3V |
+ (1 << ICC_CTLR_EL1_IDBITS_SHIFT) |
+ (7 << ICC_CTLR_EL1_PRIBITS_SHIFT);
+ cs->icc_ctlr_el1[GICV3_NS] = ICC_CTLR_EL1_A3V |
+ (1 << ICC_CTLR_EL1_IDBITS_SHIFT) |
+ (7 << ICC_CTLR_EL1_PRIBITS_SHIFT);
+ cs->icc_pmr_el1 = 0;
+ cs->icc_bpr[GICV3_G0] = GIC_MIN_BPR;
+ cs->icc_bpr[GICV3_G1] = GIC_MIN_BPR;
+ if (arm_feature(env, ARM_FEATURE_EL3)) {
+ cs->icc_bpr[GICV3_G1NS] = GIC_MIN_BPR_NS;
+ } else {
+ cs->icc_bpr[GICV3_G1NS] = GIC_MIN_BPR;
+ }
+ memset(cs->icc_apr, 0, sizeof(cs->icc_apr));
+ memset(cs->icc_igrpen, 0, sizeof(cs->icc_igrpen));
+ cs->icc_ctlr_el3 = ICC_CTLR_EL3_NDS | ICC_CTLR_EL3_A3V |
+ (1 << ICC_CTLR_EL3_IDBITS_SHIFT) |
+ (7 << ICC_CTLR_EL3_PRIBITS_SHIFT);
+}
+
+static const ARMCPRegInfo gicv3_cpuif_reginfo[] = {
+ { .name = "ICC_PMR_EL1", .state = ARM_CP_STATE_BOTH,
+ .opc0 = 3, .opc1 = 0, .crn = 4, .crm = 6, .opc2 = 0,
+ .type = ARM_CP_IO | ARM_CP_NO_RAW,
+ .access = PL1_RW, .accessfn = gicv3_irqfiq_access,
+ .readfn = icc_pmr_read,
+ .writefn = icc_pmr_write,
+ /* We hang the whole cpu interface reset routine off here
+ * rather than parcelling it out into one little function
+ * per register
+ */
+ .resetfn = icc_reset,
+ },
+ { .name = "ICC_BPR0_EL1", .state = ARM_CP_STATE_BOTH,
+ .opc0 = 3, .opc1 = 0, .crn = 12, .crm = 8, .opc2 = 3,
+ .type = ARM_CP_IO | ARM_CP_NO_RAW,
+ .access = PL1_RW, .accessfn = gicv3_fiq_access,
+ .fieldoffset = offsetof(GICv3CPUState, icc_bpr[GICV3_G0]),
+ .writefn = icc_bpr_write,
+ },
+ { .name = "ICC_AP0R0_EL1", .state = ARM_CP_STATE_BOTH,
+ .opc0 = 3, .opc1 = 0, .crn = 12, .crm = 8, .opc2 = 4,
+ .type = ARM_CP_IO | ARM_CP_NO_RAW,
+ .access = PL1_RW, .accessfn = gicv3_fiq_access,
+ .fieldoffset = offsetof(GICv3CPUState, icc_apr[GICV3_G0][0]),
+ .writefn = icc_ap_write,
+ },
+ { .name = "ICC_AP0R1_EL1", .state = ARM_CP_STATE_BOTH,
+ .opc0 = 3, .opc1 = 0, .crn = 12, .crm = 8, .opc2 = 5,
+ .type = ARM_CP_IO | ARM_CP_NO_RAW,
+ .access = PL1_RW, .accessfn = gicv3_fiq_access,
+ .fieldoffset = offsetof(GICv3CPUState, icc_apr[GICV3_G0][1]),
+ .writefn = icc_ap_write,
+ },
+ { .name = "ICC_AP0R2_EL1", .state = ARM_CP_STATE_BOTH,
+ .opc0 = 3, .opc1 = 0, .crn = 12, .crm = 8, .opc2 = 6,
+ .type = ARM_CP_IO | ARM_CP_NO_RAW,
+ .access = PL1_RW, .accessfn = gicv3_fiq_access,
+ .fieldoffset = offsetof(GICv3CPUState, icc_apr[GICV3_G0][2]),
+ .writefn = icc_ap_write,
+ },
+ { .name = "ICC_AP0R3_EL1", .state = ARM_CP_STATE_BOTH,
+ .opc0 = 3, .opc1 = 0, .crn = 12, .crm = 8, .opc2 = 7,
+ .type = ARM_CP_IO | ARM_CP_NO_RAW,
+ .access = PL1_RW, .accessfn = gicv3_fiq_access,
+ .fieldoffset = offsetof(GICv3CPUState, icc_apr[GICV3_G0][3]),
+ .writefn = icc_ap_write,
+ },
+ /* All the ICC_AP1R*_EL1 registers are banked */
+ { .name = "ICC_AP1R0_EL1", .state = ARM_CP_STATE_BOTH,
+ .opc0 = 3, .opc1 = 0, .crn = 12, .crm = 9, .opc2 = 0,
+ .type = ARM_CP_IO | ARM_CP_NO_RAW,
+ .access = PL1_RW, .accessfn = gicv3_irq_access,
+ .readfn = icc_ap_read,
+ .writefn = icc_ap_write,
+ },
+ { .name = "ICC_AP1R1_EL1", .state = ARM_CP_STATE_BOTH,
+ .opc0 = 3, .opc1 = 0, .crn = 12, .crm = 9, .opc2 = 1,
+ .type = ARM_CP_IO | ARM_CP_NO_RAW,
+ .access = PL1_RW, .accessfn = gicv3_irq_access,
+ .readfn = icc_ap_read,
+ .writefn = icc_ap_write,
+ },
+ { .name = "ICC_AP1R2_EL1", .state = ARM_CP_STATE_BOTH,
+ .opc0 = 3, .opc1 = 0, .crn = 12, .crm = 9, .opc2 = 2,
+ .type = ARM_CP_IO | ARM_CP_NO_RAW,
+ .access = PL1_RW, .accessfn = gicv3_irq_access,
+ .readfn = icc_ap_read,
+ .writefn = icc_ap_write,
+ },
+ { .name = "ICC_AP1R3_EL1", .state = ARM_CP_STATE_BOTH,
+ .opc0 = 3, .opc1 = 0, .crn = 12, .crm = 9, .opc2 = 3,
+ .type = ARM_CP_IO | ARM_CP_NO_RAW,
+ .access = PL1_RW, .accessfn = gicv3_irq_access,
+ .readfn = icc_ap_read,
+ .writefn = icc_ap_write,
+ },
+ /* This register is banked */
+ { .name = "ICC_BPR1_EL1", .state = ARM_CP_STATE_BOTH,
+ .opc0 = 3, .opc1 = 0, .crn = 12, .crm = 12, .opc2 = 3,
+ .type = ARM_CP_IO | ARM_CP_NO_RAW,
+ .access = PL1_RW, .accessfn = gicv3_irq_access,
+ .readfn = icc_bpr_read,
+ .writefn = icc_bpr_write,
+ },
+ /* This register is banked */
+ { .name = "ICC_CTLR_EL1", .state = ARM_CP_STATE_BOTH,
+ .opc0 = 3, .opc1 = 0, .crn = 12, .crm = 12, .opc2 = 4,
+ .type = ARM_CP_IO | ARM_CP_NO_RAW,
+ .access = PL1_RW, .accessfn = gicv3_irqfiq_access,
+ .readfn = icc_ctlr_el1_read,
+ .writefn = icc_ctlr_el1_write,
+ },
+ { .name = "ICC_SRE_EL1", .state = ARM_CP_STATE_BOTH,
+ .opc0 = 3, .opc1 = 0, .crn = 12, .crm = 12, .opc2 = 5,
+ .type = ARM_CP_NO_RAW | ARM_CP_CONST,
+ .access = PL1_RW,
+ /* We don't support IRQ/FIQ bypass and system registers are
+ * always enabled, so all our bits are RAZ/WI or RAO/WI.
+ * This register is banked but since it's constant we don't
+ * need to do anything special.
+ */
+ .resetvalue = 0x7,
+ },
+ { .name = "ICC_IGRPEN0_EL1", .state = ARM_CP_STATE_BOTH,
+ .opc0 = 3, .opc1 = 0, .crn = 12, .crm = 12, .opc2 = 6,
+ .type = ARM_CP_IO | ARM_CP_NO_RAW,
+ .access = PL1_RW, .accessfn = gicv3_fiq_access,
+ .fieldoffset = offsetof(GICv3CPUState, icc_igrpen[GICV3_G0]),
+ .writefn = icc_igrpen_write,
+ },
+ /* This register is banked */
+ { .name = "ICC_IGRPEN1_EL1", .state = ARM_CP_STATE_BOTH,
+ .opc0 = 3, .opc1 = 0, .crn = 12, .crm = 12, .opc2 = 7,
+ .type = ARM_CP_IO | ARM_CP_NO_RAW,
+ .access = PL1_RW, .accessfn = gicv3_irq_access,
+ .readfn = icc_igrpen_read,
+ .writefn = icc_igrpen_write,
+ },
+ { .name = "ICC_SRE_EL2", .state = ARM_CP_STATE_BOTH,
+ .opc0 = 3, .opc1 = 4, .crn = 12, .crm = 9, .opc2 = 5,
+ .type = ARM_CP_NO_RAW | ARM_CP_CONST,
+ .access = PL2_RW,
+ /* We don't support IRQ/FIQ bypass and system registers are
+ * always enabled, so all our bits are RAZ/WI or RAO/WI.
+ */
+ .resetvalue = 0xf,
+ },
+ { .name = "ICC_CTLR_EL3", .state = ARM_CP_STATE_BOTH,
+ .opc0 = 3, .opc1 = 6, .crn = 12, .crm = 12, .opc2 = 4,
+ .type = ARM_CP_IO | ARM_CP_NO_RAW,
+ .access = PL3_RW,
+ .fieldoffset = offsetof(GICv3CPUState, icc_ctlr_el3),
+ .readfn = icc_ctlr_el3_read,
+ .writefn = icc_ctlr_el3_write,
+ },
+ { .name = "ICC_SRE_EL3", .state = ARM_CP_STATE_BOTH,
+ .opc0 = 3, .opc1 = 6, .crn = 12, .crm = 12, .opc2 = 5,
+ .type = ARM_CP_NO_RAW | ARM_CP_CONST,
+ .access = PL3_RW,
+ /* We don't support IRQ/FIQ bypass and system registers are
+ * always enabled, so all our bits are RAZ/WI or RAO/WI.
+ */
+ .resetvalue = 0xf,
+ },
+ { .name = "ICC_IGRPEN1_EL3", .state = ARM_CP_STATE_BOTH,
+ .opc0 = 3, .opc1 = 6, .crn = 12, .crm = 12, .opc2 = 7,
+ .type = ARM_CP_IO | ARM_CP_NO_RAW,
+ .access = PL3_RW,
+ .readfn = icc_igrpen1_el3_read,
+ .writefn = icc_igrpen1_el3_write,
+ },
+ REGINFO_SENTINEL
+};
+
+static void gicv3_cpuif_el_change_hook(ARMCPU *cpu, void *opaque)
+{
+ /* Do nothing for now. */
+}
+
+void gicv3_init_cpuif(GICv3State *s)
+{
+ /* Called from the GICv3 realize function; register our system
+ * registers with the CPU
+ */
+ int i;
+
+ for (i = 0; i < s->num_cpu; i++) {
+ ARMCPU *cpu = ARM_CPU(qemu_get_cpu(i));
+ GICv3CPUState *cs = &s->cpu[i];
+
+ /* Note that we can't just use the GICv3CPUState as an opaque pointer
+ * in define_arm_cp_regs_with_opaque(), because when we're called back
+ * it might be with code translated by CPU 0 but run by CPU 1, in
+ * which case we'd get the wrong value.
+ * So instead we define the regs with no ri->opaque info, and
+ * get back to the GICv3CPUState from the ARMCPU by reading back
+ * the opaque pointer from the el_change_hook, which we're going
+ * to need to register anyway.
+ */
+ define_arm_cp_regs(cpu, gicv3_cpuif_reginfo);
+ arm_register_el_change_hook(cpu, gicv3_cpuif_el_change_hook, cs);
+ }
+}
diff --git a/hw/intc/gicv3_internal.h b/hw/intc/gicv3_internal.h
index a6f443cef6..13f951c81f 100644
--- a/hw/intc/gicv3_internal.h
+++ b/hw/intc/gicv3_internal.h
@@ -211,6 +211,7 @@ 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_init_cpuif(GICv3State *s);
/**
* gicv3_cpuif_update:
generated by cgit v1.2.3 (git 2.26.2) at 2025-02-07 12:30:33 +0000