diff options
Diffstat (limited to 'target/mips/kvm.c')
| -rw-r--r-- | target/mips/kvm.c | 1060 |
1 files changed, 1060 insertions, 0 deletions
diff --git a/target/mips/kvm.c b/target/mips/kvm.c new file mode 100644 index 0000000000..dcf5fbba0c --- /dev/null +++ b/target/mips/kvm.c @@ -0,0 +1,1060 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * KVM/MIPS: MIPS specific KVM APIs + * + * Copyright (C) 2012-2014 Imagination Technologies Ltd. + * Authors: Sanjay Lal <sanjayl@kymasys.com> +*/ + +#include "qemu/osdep.h" +#include <sys/ioctl.h> + +#include <linux/kvm.h> + +#include "qemu-common.h" +#include "cpu.h" +#include "qemu/error-report.h" +#include "qemu/timer.h" +#include "sysemu/sysemu.h" +#include "sysemu/kvm.h" +#include "sysemu/cpus.h" +#include "kvm_mips.h" +#include "exec/memattrs.h" + +#define DEBUG_KVM 0 + +#define DPRINTF(fmt, ...) \ + do { if (DEBUG_KVM) { fprintf(stderr, fmt, ## __VA_ARGS__); } } while (0) + +static int kvm_mips_fpu_cap; +static int kvm_mips_msa_cap; + +const KVMCapabilityInfo kvm_arch_required_capabilities[] = { + KVM_CAP_LAST_INFO +}; + +static void kvm_mips_update_state(void *opaque, int running, RunState state); + +unsigned long kvm_arch_vcpu_id(CPUState *cs) +{ + return cs->cpu_index; +} + +int kvm_arch_init(MachineState *ms, KVMState *s) +{ + /* MIPS has 128 signals */ + kvm_set_sigmask_len(s, 16); + + kvm_mips_fpu_cap = kvm_check_extension(s, KVM_CAP_MIPS_FPU); + kvm_mips_msa_cap = kvm_check_extension(s, KVM_CAP_MIPS_MSA); + + DPRINTF("%s\n", __func__); + return 0; +} + +int kvm_arch_init_vcpu(CPUState *cs) +{ + MIPSCPU *cpu = MIPS_CPU(cs); + CPUMIPSState *env = &cpu->env; + int ret = 0; + + qemu_add_vm_change_state_handler(kvm_mips_update_state, cs); + + if (kvm_mips_fpu_cap && env->CP0_Config1 & (1 << CP0C1_FP)) { + ret = kvm_vcpu_enable_cap(cs, KVM_CAP_MIPS_FPU, 0, 0); + if (ret < 0) { + /* mark unsupported so it gets disabled on reset */ + kvm_mips_fpu_cap = 0; + ret = 0; + } + } + + if (kvm_mips_msa_cap && env->CP0_Config3 & (1 << CP0C3_MSAP)) { + ret = kvm_vcpu_enable_cap(cs, KVM_CAP_MIPS_MSA, 0, 0); + if (ret < 0) { + /* mark unsupported so it gets disabled on reset */ + kvm_mips_msa_cap = 0; + ret = 0; + } + } + + DPRINTF("%s\n", __func__); + return ret; +} + +void kvm_mips_reset_vcpu(MIPSCPU *cpu) +{ + CPUMIPSState *env = &cpu->env; + + if (!kvm_mips_fpu_cap && env->CP0_Config1 & (1 << CP0C1_FP)) { + fprintf(stderr, "Warning: KVM does not support FPU, disabling\n"); + env->CP0_Config1 &= ~(1 << CP0C1_FP); + } + if (!kvm_mips_msa_cap && env->CP0_Config3 & (1 << CP0C3_MSAP)) { + fprintf(stderr, "Warning: KVM does not support MSA, disabling\n"); + env->CP0_Config3 &= ~(1 << CP0C3_MSAP); + } + + DPRINTF("%s\n", __func__); +} + +int kvm_arch_insert_sw_breakpoint(CPUState *cs, struct kvm_sw_breakpoint *bp) +{ + DPRINTF("%s\n", __func__); + return 0; +} + +int kvm_arch_remove_sw_breakpoint(CPUState *cs, struct kvm_sw_breakpoint *bp) +{ + DPRINTF("%s\n", __func__); + return 0; +} + +static inline int cpu_mips_io_interrupts_pending(MIPSCPU *cpu) +{ + CPUMIPSState *env = &cpu->env; + + return env->CP0_Cause & (0x1 << (2 + CP0Ca_IP)); +} + + +void kvm_arch_pre_run(CPUState *cs, struct kvm_run *run) +{ + MIPSCPU *cpu = MIPS_CPU(cs); + int r; + struct kvm_mips_interrupt intr; + + qemu_mutex_lock_iothread(); + + if ((cs->interrupt_request & CPU_INTERRUPT_HARD) && + cpu_mips_io_interrupts_pending(cpu)) { + intr.cpu = -1; + intr.irq = 2; + r = kvm_vcpu_ioctl(cs, KVM_INTERRUPT, &intr); + if (r < 0) { + error_report("%s: cpu %d: failed to inject IRQ %x", + __func__, cs->cpu_index, intr.irq); + } + } + + qemu_mutex_unlock_iothread(); +} + +MemTxAttrs kvm_arch_post_run(CPUState *cs, struct kvm_run *run) +{ + return MEMTXATTRS_UNSPECIFIED; +} + +int kvm_arch_process_async_events(CPUState *cs) +{ + return cs->halted; +} + +int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run) +{ + int ret; + + DPRINTF("%s\n", __func__); + switch (run->exit_reason) { + default: + error_report("%s: unknown exit reason %d", + __func__, run->exit_reason); + ret = -1; + break; + } + + return ret; +} + +bool kvm_arch_stop_on_emulation_error(CPUState *cs) +{ + DPRINTF("%s\n", __func__); + return true; +} + +int kvm_arch_on_sigbus_vcpu(CPUState *cs, int code, void *addr) +{ + DPRINTF("%s\n", __func__); + return 1; +} + +int kvm_arch_on_sigbus(int code, void *addr) +{ + DPRINTF("%s\n", __func__); + return 1; +} + +void kvm_arch_init_irq_routing(KVMState *s) +{ +} + +int kvm_mips_set_interrupt(MIPSCPU *cpu, int irq, int level) +{ + CPUState *cs = CPU(cpu); + struct kvm_mips_interrupt intr; + + if (!kvm_enabled()) { + return 0; + } + + intr.cpu = -1; + + if (level) { + intr.irq = irq; + } else { + intr.irq = -irq; + } + + kvm_vcpu_ioctl(cs, KVM_INTERRUPT, &intr); + + return 0; +} + +int kvm_mips_set_ipi_interrupt(MIPSCPU *cpu, int irq, int level) +{ + CPUState *cs = current_cpu; + CPUState *dest_cs = CPU(cpu); + struct kvm_mips_interrupt intr; + + if (!kvm_enabled()) { + return 0; + } + + intr.cpu = dest_cs->cpu_index; + + if (level) { + intr.irq = irq; + } else { + intr.irq = -irq; + } + + DPRINTF("%s: CPU %d, IRQ: %d\n", __func__, intr.cpu, intr.irq); + + kvm_vcpu_ioctl(cs, KVM_INTERRUPT, &intr); + + return 0; +} + +#define MIPS_CP0_32(_R, _S) \ + (KVM_REG_MIPS_CP0 | KVM_REG_SIZE_U32 | (8 * (_R) + (_S))) + +#define MIPS_CP0_64(_R, _S) \ + (KVM_REG_MIPS_CP0 | KVM_REG_SIZE_U64 | (8 * (_R) + (_S))) + +#define KVM_REG_MIPS_CP0_INDEX MIPS_CP0_32(0, 0) +#define KVM_REG_MIPS_CP0_CONTEXT MIPS_CP0_64(4, 0) +#define KVM_REG_MIPS_CP0_USERLOCAL MIPS_CP0_64(4, 2) +#define KVM_REG_MIPS_CP0_PAGEMASK MIPS_CP0_32(5, 0) +#define KVM_REG_MIPS_CP0_WIRED MIPS_CP0_32(6, 0) +#define KVM_REG_MIPS_CP0_HWRENA MIPS_CP0_32(7, 0) +#define KVM_REG_MIPS_CP0_BADVADDR MIPS_CP0_64(8, 0) +#define KVM_REG_MIPS_CP0_COUNT MIPS_CP0_32(9, 0) +#define KVM_REG_MIPS_CP0_ENTRYHI MIPS_CP0_64(10, 0) +#define KVM_REG_MIPS_CP0_COMPARE MIPS_CP0_32(11, 0) +#define KVM_REG_MIPS_CP0_STATUS MIPS_CP0_32(12, 0) +#define KVM_REG_MIPS_CP0_CAUSE MIPS_CP0_32(13, 0) +#define KVM_REG_MIPS_CP0_EPC MIPS_CP0_64(14, 0) +#define KVM_REG_MIPS_CP0_PRID MIPS_CP0_32(15, 0) +#define KVM_REG_MIPS_CP0_CONFIG MIPS_CP0_32(16, 0) +#define KVM_REG_MIPS_CP0_CONFIG1 MIPS_CP0_32(16, 1) +#define KVM_REG_MIPS_CP0_CONFIG2 MIPS_CP0_32(16, 2) +#define KVM_REG_MIPS_CP0_CONFIG3 MIPS_CP0_32(16, 3) +#define KVM_REG_MIPS_CP0_CONFIG4 MIPS_CP0_32(16, 4) +#define KVM_REG_MIPS_CP0_CONFIG5 MIPS_CP0_32(16, 5) +#define KVM_REG_MIPS_CP0_ERROREPC MIPS_CP0_64(30, 0) + +static inline int kvm_mips_put_one_reg(CPUState *cs, uint64_t reg_id, + int32_t *addr) +{ + struct kvm_one_reg cp0reg = { + .id = reg_id, + .addr = (uintptr_t)addr + }; + + return kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, &cp0reg); +} + +static inline int kvm_mips_put_one_ureg(CPUState *cs, uint64_t reg_id, + uint32_t *addr) +{ + struct kvm_one_reg cp0reg = { + .id = reg_id, + .addr = (uintptr_t)addr + }; + + return kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, &cp0reg); +} + +static inline int kvm_mips_put_one_ulreg(CPUState *cs, uint64_t reg_id, + target_ulong *addr) +{ + uint64_t val64 = *addr; + struct kvm_one_reg cp0reg = { + .id = reg_id, + .addr = (uintptr_t)&val64 + }; + + return kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, &cp0reg); +} + +static inline int kvm_mips_put_one_reg64(CPUState *cs, uint64_t reg_id, + int64_t *addr) +{ + struct kvm_one_reg cp0reg = { + .id = reg_id, + .addr = (uintptr_t)addr + }; + + return kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, &cp0reg); +} + +static inline int kvm_mips_put_one_ureg64(CPUState *cs, uint64_t reg_id, + uint64_t *addr) +{ + struct kvm_one_reg cp0reg = { + .id = reg_id, + .addr = (uintptr_t)addr + }; + + return kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, &cp0reg); +} + +static inline int kvm_mips_get_one_reg(CPUState *cs, uint64_t reg_id, + int32_t *addr) +{ + struct kvm_one_reg cp0reg = { + .id = reg_id, + .addr = (uintptr_t)addr + }; + + return kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, &cp0reg); +} + +static inline int kvm_mips_get_one_ureg(CPUState *cs, uint64_t reg_id, + uint32_t *addr) +{ + struct kvm_one_reg cp0reg = { + .id = reg_id, + .addr = (uintptr_t)addr + }; + + return kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, &cp0reg); +} + +static inline int kvm_mips_get_one_ulreg(CPUState *cs, uint64_t reg_id, + target_ulong *addr) +{ + int ret; + uint64_t val64 = 0; + struct kvm_one_reg cp0reg = { + .id = reg_id, + .addr = (uintptr_t)&val64 + }; + + ret = kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, &cp0reg); + if (ret >= 0) { + *addr = val64; + } + return ret; +} + +static inline int kvm_mips_get_one_reg64(CPUState *cs, uint64_t reg_id, + int64_t *addr) +{ + struct kvm_one_reg cp0reg = { + .id = reg_id, + .addr = (uintptr_t)addr + }; + + return kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, &cp0reg); +} + +static inline int kvm_mips_get_one_ureg64(CPUState *cs, uint64_t reg_id, + uint64_t *addr) +{ + struct kvm_one_reg cp0reg = { + .id = reg_id, + .addr = (uintptr_t)addr + }; + + return kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, &cp0reg); +} + +#define KVM_REG_MIPS_CP0_CONFIG_MASK (1U << CP0C0_M) +#define KVM_REG_MIPS_CP0_CONFIG1_MASK ((1U << CP0C1_M) | \ + (1U << CP0C1_FP)) +#define KVM_REG_MIPS_CP0_CONFIG2_MASK (1U << CP0C2_M) +#define KVM_REG_MIPS_CP0_CONFIG3_MASK ((1U << CP0C3_M) | \ + (1U << CP0C3_MSAP)) +#define KVM_REG_MIPS_CP0_CONFIG4_MASK (1U << CP0C4_M) +#define KVM_REG_MIPS_CP0_CONFIG5_MASK ((1U << CP0C5_MSAEn) | \ + (1U << CP0C5_UFE) | \ + (1U << CP0C5_FRE) | \ + (1U << CP0C5_UFR)) + +static inline int kvm_mips_change_one_reg(CPUState *cs, uint64_t reg_id, + int32_t *addr, int32_t mask) +{ + int err; + int32_t tmp, change; + + err = kvm_mips_get_one_reg(cs, reg_id, &tmp); + if (err < 0) { + return err; + } + + /* only change bits in mask */ + change = (*addr ^ tmp) & mask; + if (!change) { + return 0; + } + + tmp = tmp ^ change; + return kvm_mips_put_one_reg(cs, reg_id, &tmp); +} + +/* + * We freeze the KVM timer when either the VM clock is stopped or the state is + * saved (the state is dirty). + */ + +/* + * Save the state of the KVM timer when VM clock is stopped or state is synced + * to QEMU. + */ +static int kvm_mips_save_count(CPUState *cs) +{ + MIPSCPU *cpu = MIPS_CPU(cs); + CPUMIPSState *env = &cpu->env; + uint64_t count_ctl; + int err, ret = 0; + + /* freeze KVM timer */ + err = kvm_mips_get_one_ureg64(cs, KVM_REG_MIPS_COUNT_CTL, &count_ctl); + if (err < 0) { + DPRINTF("%s: Failed to get COUNT_CTL (%d)\n", __func__, err); + ret = err; + } else if (!(count_ctl & KVM_REG_MIPS_COUNT_CTL_DC)) { + count_ctl |= KVM_REG_MIPS_COUNT_CTL_DC; + err = kvm_mips_put_one_ureg64(cs, KVM_REG_MIPS_COUNT_CTL, &count_ctl); + if (err < 0) { + DPRINTF("%s: Failed to set COUNT_CTL.DC=1 (%d)\n", __func__, err); + ret = err; + } + } + + /* read CP0_Cause */ + err = kvm_mips_get_one_reg(cs, KVM_REG_MIPS_CP0_CAUSE, &env->CP0_Cause); + if (err < 0) { + DPRINTF("%s: Failed to get CP0_CAUSE (%d)\n", __func__, err); + ret = err; + } + + /* read CP0_Count */ + err = kvm_mips_get_one_reg(cs, KVM_REG_MIPS_CP0_COUNT, &env->CP0_Count); + if (err < 0) { + DPRINTF("%s: Failed to get CP0_COUNT (%d)\n", __func__, err); + ret = err; + } + + return ret; +} + +/* + * Restore the state of the KVM timer when VM clock is restarted or state is + * synced to KVM. + */ +static int kvm_mips_restore_count(CPUState *cs) +{ + MIPSCPU *cpu = MIPS_CPU(cs); + CPUMIPSState *env = &cpu->env; + uint64_t count_ctl; + int err_dc, err, ret = 0; + + /* check the timer is frozen */ + err_dc = kvm_mips_get_one_ureg64(cs, KVM_REG_MIPS_COUNT_CTL, &count_ctl); + if (err_dc < 0) { + DPRINTF("%s: Failed to get COUNT_CTL (%d)\n", __func__, err_dc); + ret = err_dc; + } else if (!(count_ctl & KVM_REG_MIPS_COUNT_CTL_DC)) { + /* freeze timer (sets COUNT_RESUME for us) */ + count_ctl |= KVM_REG_MIPS_COUNT_CTL_DC; + err = kvm_mips_put_one_ureg64(cs, KVM_REG_MIPS_COUNT_CTL, &count_ctl); + if (err < 0) { + DPRINTF("%s: Failed to set COUNT_CTL.DC=1 (%d)\n", __func__, err); + ret = err; + } + } + + /* load CP0_Cause */ + err = kvm_mips_put_one_reg(cs, KVM_REG_MIPS_CP0_CAUSE, &env->CP0_Cause); + if (err < 0) { + DPRINTF("%s: Failed to put CP0_CAUSE (%d)\n", __func__, err); + ret = err; + } + + /* load CP0_Count */ + err = kvm_mips_put_one_reg(cs, KVM_REG_MIPS_CP0_COUNT, &env->CP0_Count); + if (err < 0) { + DPRINTF("%s: Failed to put CP0_COUNT (%d)\n", __func__, err); + ret = err; + } + + /* resume KVM timer */ + if (err_dc >= 0) { + count_ctl &= ~KVM_REG_MIPS_COUNT_CTL_DC; + err = kvm_mips_put_one_ureg64(cs, KVM_REG_MIPS_COUNT_CTL, &count_ctl); + if (err < 0) { + DPRINTF("%s: Failed to set COUNT_CTL.DC=0 (%d)\n", __func__, err); + ret = err; + } + } + + return ret; +} + +/* + * Handle the VM clock being started or stopped + */ +static void kvm_mips_update_state(void *opaque, int running, RunState state) +{ + CPUState *cs = opaque; + int ret; + uint64_t count_resume; + + /* + * If state is already dirty (synced to QEMU) then the KVM timer state is + * already saved and can be restored when it is synced back to KVM. + */ + if (!running) { + if (!cs->kvm_vcpu_dirty) { + ret = kvm_mips_save_count(cs); + if (ret < 0) { + fprintf(stderr, "Failed saving count\n"); + } + } + } else { + /* Set clock restore time to now */ + count_resume = qemu_clock_get_ns(QEMU_CLOCK_REALTIME); + ret = kvm_mips_put_one_ureg64(cs, KVM_REG_MIPS_COUNT_RESUME, + &count_resume); + if (ret < 0) { + fprintf(stderr, "Failed setting COUNT_RESUME\n"); + return; + } + + if (!cs->kvm_vcpu_dirty) { + ret = kvm_mips_restore_count(cs); + if (ret < 0) { + fprintf(stderr, "Failed restoring count\n"); + } + } + } +} + +static int kvm_mips_put_fpu_registers(CPUState *cs, int level) +{ + MIPSCPU *cpu = MIPS_CPU(cs); + CPUMIPSState *env = &cpu->env; + int err, ret = 0; + unsigned int i; + + /* Only put FPU state if we're emulating a CPU with an FPU */ + if (env->CP0_Config1 & (1 << CP0C1_FP)) { + /* FPU Control Registers */ + if (level == KVM_PUT_FULL_STATE) { + err = kvm_mips_put_one_ureg(cs, KVM_REG_MIPS_FCR_IR, + &env->active_fpu.fcr0); + if (err < 0) { + DPRINTF("%s: Failed to put FCR_IR (%d)\n", __func__, err); + ret = err; + } + } + err = kvm_mips_put_one_ureg(cs, KVM_REG_MIPS_FCR_CSR, + &env->active_fpu.fcr31); + if (err < 0) { + DPRINTF("%s: Failed to put FCR_CSR (%d)\n", __func__, err); + ret = err; + } + + /* + * FPU register state is a subset of MSA vector state, so don't put FPU + * registers if we're emulating a CPU with MSA. + */ + if (!(env->CP0_Config3 & (1 << CP0C3_MSAP))) { + /* Floating point registers */ + for (i = 0; i < 32; ++i) { + if (env->CP0_Status & (1 << CP0St_FR)) { + err = kvm_mips_put_one_ureg64(cs, KVM_REG_MIPS_FPR_64(i), + &env->active_fpu.fpr[i].d); + } else { + err = kvm_mips_get_one_ureg(cs, KVM_REG_MIPS_FPR_32(i), + &env->active_fpu.fpr[i].w[FP_ENDIAN_IDX]); + } + if (err < 0) { + DPRINTF("%s: Failed to put FPR%u (%d)\n", __func__, i, err); + ret = err; + } + } + } + } + + /* Only put MSA state if we're emulating a CPU with MSA */ + if (env->CP0_Config3 & (1 << CP0C3_MSAP)) { + /* MSA Control Registers */ + if (level == KVM_PUT_FULL_STATE) { + err = kvm_mips_put_one_reg(cs, KVM_REG_MIPS_MSA_IR, + &env->msair); + if (err < 0) { + DPRINTF("%s: Failed to put MSA_IR (%d)\n", __func__, err); + ret = err; + } + } + err = kvm_mips_put_one_reg(cs, KVM_REG_MIPS_MSA_CSR, + &env->active_tc.msacsr); + if (err < 0) { + DPRINTF("%s: Failed to put MSA_CSR (%d)\n", __func__, err); + ret = err; + } + + /* Vector registers (includes FP registers) */ + for (i = 0; i < 32; ++i) { + /* Big endian MSA not supported by QEMU yet anyway */ + err = kvm_mips_put_one_reg64(cs, KVM_REG_MIPS_VEC_128(i), + env->active_fpu.fpr[i].wr.d); + if (err < 0) { + DPRINTF("%s: Failed to put VEC%u (%d)\n", __func__, i, err); + ret = err; + } + } + } + + return ret; +} + +static int kvm_mips_get_fpu_registers(CPUState *cs) +{ + MIPSCPU *cpu = MIPS_CPU(cs); + CPUMIPSState *env = &cpu->env; + int err, ret = 0; + unsigned int i; + + /* Only get FPU state if we're emulating a CPU with an FPU */ + if (env->CP0_Config1 & (1 << CP0C1_FP)) { + /* FPU Control Registers */ + err = kvm_mips_get_one_ureg(cs, KVM_REG_MIPS_FCR_IR, + &env->active_fpu.fcr0); + if (err < 0) { + DPRINTF("%s: Failed to get FCR_IR (%d)\n", __func__, err); + ret = err; + } + err = kvm_mips_get_one_ureg(cs, KVM_REG_MIPS_FCR_CSR, + &env->active_fpu.fcr31); + if (err < 0) { + DPRINTF("%s: Failed to get FCR_CSR (%d)\n", __func__, err); + ret = err; + } else { + restore_fp_status(env); + } + + /* + * FPU register state is a subset of MSA vector state, so don't save FPU + * registers if we're emulating a CPU with MSA. + */ + if (!(env->CP0_Config3 & (1 << CP0C3_MSAP))) { + /* Floating point registers */ + for (i = 0; i < 32; ++i) { + if (env->CP0_Status & (1 << CP0St_FR)) { + err = kvm_mips_get_one_ureg64(cs, KVM_REG_MIPS_FPR_64(i), + &env->active_fpu.fpr[i].d); + } else { + err = kvm_mips_get_one_ureg(cs, KVM_REG_MIPS_FPR_32(i), + &env->active_fpu.fpr[i].w[FP_ENDIAN_IDX]); + } + if (err < 0) { + DPRINTF("%s: Failed to get FPR%u (%d)\n", __func__, i, err); + ret = err; + } + } + } + } + + /* Only get MSA state if we're emulating a CPU with MSA */ + if (env->CP0_Config3 & (1 << CP0C3_MSAP)) { + /* MSA Control Registers */ + err = kvm_mips_get_one_reg(cs, KVM_REG_MIPS_MSA_IR, + &env->msair); + if (err < 0) { + DPRINTF("%s: Failed to get MSA_IR (%d)\n", __func__, err); + ret = err; + } + err = kvm_mips_get_one_reg(cs, KVM_REG_MIPS_MSA_CSR, + &env->active_tc.msacsr); + if (err < 0) { + DPRINTF("%s: Failed to get MSA_CSR (%d)\n", __func__, err); + ret = err; + } else { + restore_msa_fp_status(env); + } + + /* Vector registers (includes FP registers) */ + for (i = 0; i < 32; ++i) { + /* Big endian MSA not supported by QEMU yet anyway */ + err = kvm_mips_get_one_reg64(cs, KVM_REG_MIPS_VEC_128(i), + env->active_fpu.fpr[i].wr.d); + if (err < 0) { + DPRINTF("%s: Failed to get VEC%u (%d)\n", __func__, i, err); + ret = err; + } + } + } + + return ret; +} + + +static int kvm_mips_put_cp0_registers(CPUState *cs, int level) +{ + MIPSCPU *cpu = MIPS_CPU(cs); + CPUMIPSState *env = &cpu->env; + int err, ret = 0; + + (void)level; + + err = kvm_mips_put_one_reg(cs, KVM_REG_MIPS_CP0_INDEX, &env->CP0_Index); + if (err < 0) { + DPRINTF("%s: Failed to put CP0_INDEX (%d)\n", __func__, err); + ret = err; + } + err = kvm_mips_put_one_ulreg(cs, KVM_REG_MIPS_CP0_CONTEXT, + &env->CP0_Context); + if (err < 0) { + DPRINTF("%s: Failed to put CP0_CONTEXT (%d)\n", __func__, err); + ret = err; + } + err = kvm_mips_put_one_ulreg(cs, KVM_REG_MIPS_CP0_USERLOCAL, + &env->active_tc.CP0_UserLocal); + if (err < 0) { + DPRINTF("%s: Failed to put CP0_USERLOCAL (%d)\n", __func__, err); + ret = err; + } + err = kvm_mips_put_one_reg(cs, KVM_REG_MIPS_CP0_PAGEMASK, + &env->CP0_PageMask); + if (err < 0) { + DPRINTF("%s: Failed to put CP0_PAGEMASK (%d)\n", __func__, err); + ret = err; + } + err = kvm_mips_put_one_reg(cs, KVM_REG_MIPS_CP0_WIRED, &env->CP0_Wired); + if (err < 0) { + DPRINTF("%s: Failed to put CP0_WIRED (%d)\n", __func__, err); + ret = err; + } + err = kvm_mips_put_one_reg(cs, KVM_REG_MIPS_CP0_HWRENA, &env->CP0_HWREna); + if (err < 0) { + DPRINTF("%s: Failed to put CP0_HWRENA (%d)\n", __func__, err); + ret = err; + } + err = kvm_mips_put_one_ulreg(cs, KVM_REG_MIPS_CP0_BADVADDR, + &env->CP0_BadVAddr); + if (err < 0) { + DPRINTF("%s: Failed to put CP0_BADVADDR (%d)\n", __func__, err); + ret = err; + } + + /* If VM clock stopped then state will be restored when it is restarted */ + if (runstate_is_running()) { + err = kvm_mips_restore_count(cs); + if (err < 0) { + ret = err; + } + } + + err = kvm_mips_put_one_ulreg(cs, KVM_REG_MIPS_CP0_ENTRYHI, + &env->CP0_EntryHi); + if (err < 0) { + DPRINTF("%s: Failed to put CP0_ENTRYHI (%d)\n", __func__, err); + ret = err; + } + err = kvm_mips_put_one_reg(cs, KVM_REG_MIPS_CP0_COMPARE, + &env->CP0_Compare); + if (err < 0) { + DPRINTF("%s: Failed to put CP0_COMPARE (%d)\n", __func__, err); + ret = err; + } + err = kvm_mips_put_one_reg(cs, KVM_REG_MIPS_CP0_STATUS, &env->CP0_Status); + if (err < 0) { + DPRINTF("%s: Failed to put CP0_STATUS (%d)\n", __func__, err); + ret = err; + } + err = kvm_mips_put_one_ulreg(cs, KVM_REG_MIPS_CP0_EPC, &env->CP0_EPC); + if (err < 0) { + DPRINTF("%s: Failed to put CP0_EPC (%d)\n", __func__, err); + ret = err; + } + err = kvm_mips_put_one_reg(cs, KVM_REG_MIPS_CP0_PRID, &env->CP0_PRid); + if (err < 0) { + DPRINTF("%s: Failed to put CP0_PRID (%d)\n", __func__, err); + ret = err; + } + err = kvm_mips_change_one_reg(cs, KVM_REG_MIPS_CP0_CONFIG, + &env->CP0_Config0, + KVM_REG_MIPS_CP0_CONFIG_MASK); + if (err < 0) { + DPRINTF("%s: Failed to change CP0_CONFIG (%d)\n", __func__, err); + ret = err; + } + err = kvm_mips_change_one_reg(cs, KVM_REG_MIPS_CP0_CONFIG1, + &env->CP0_Config1, + KVM_REG_MIPS_CP0_CONFIG1_MASK); + if (err < 0) { + DPRINTF("%s: Failed to change CP0_CONFIG1 (%d)\n", __func__, err); + ret = err; + } + err = kvm_mips_change_one_reg(cs, KVM_REG_MIPS_CP0_CONFIG2, + &env->CP0_Config2, + KVM_REG_MIPS_CP0_CONFIG2_MASK); + if (err < 0) { + DPRINTF("%s: Failed to change CP0_CONFIG2 (%d)\n", __func__, err); + ret = err; + } + err = kvm_mips_change_one_reg(cs, KVM_REG_MIPS_CP0_CONFIG3, + &env->CP0_Config3, + KVM_REG_MIPS_CP0_CONFIG3_MASK); + if (err < 0) { + DPRINTF("%s: Failed to change CP0_CONFIG3 (%d)\n", __func__, err); + ret = err; + } + err = kvm_mips_change_one_reg(cs, KVM_REG_MIPS_CP0_CONFIG4, + &env->CP0_Config4, + KVM_REG_MIPS_CP0_CONFIG4_MASK); + if (err < 0) { + DPRINTF("%s: Failed to change CP0_CONFIG4 (%d)\n", __func__, err); + ret = err; + } + err = kvm_mips_change_one_reg(cs, KVM_REG_MIPS_CP0_CONFIG5, + &env->CP0_Config5, + KVM_REG_MIPS_CP0_CONFIG5_MASK); + if (err < 0) { + DPRINTF("%s: Failed to change CP0_CONFIG5 (%d)\n", __func__, err); + ret = err; + } + err = kvm_mips_put_one_ulreg(cs, KVM_REG_MIPS_CP0_ERROREPC, + &env->CP0_ErrorEPC); + if (err < 0) { + DPRINTF("%s: Failed to put CP0_ERROREPC (%d)\n", __func__, err); + ret = err; + } + + return ret; +} + +static int kvm_mips_get_cp0_registers(CPUState *cs) +{ + MIPSCPU *cpu = MIPS_CPU(cs); + CPUMIPSState *env = &cpu->env; + int err, ret = 0; + + err = kvm_mips_get_one_reg(cs, KVM_REG_MIPS_CP0_INDEX, &env->CP0_Index); + if (err < 0) { + DPRINTF("%s: Failed to get CP0_INDEX (%d)\n", __func__, err); + ret = err; + } + err = kvm_mips_get_one_ulreg(cs, KVM_REG_MIPS_CP0_CONTEXT, + &env->CP0_Context); + if (err < 0) { + DPRINTF("%s: Failed to get CP0_CONTEXT (%d)\n", __func__, err); + ret = err; + } + err = kvm_mips_get_one_ulreg(cs, KVM_REG_MIPS_CP0_USERLOCAL, + &env->active_tc.CP0_UserLocal); + if (err < 0) { + DPRINTF("%s: Failed to get CP0_USERLOCAL (%d)\n", __func__, err); + ret = err; + } + err = kvm_mips_get_one_reg(cs, KVM_REG_MIPS_CP0_PAGEMASK, + &env->CP0_PageMask); + if (err < 0) { + DPRINTF("%s: Failed to get CP0_PAGEMASK (%d)\n", __func__, err); + ret = err; + } + err = kvm_mips_get_one_reg(cs, KVM_REG_MIPS_CP0_WIRED, &env->CP0_Wired); + if (err < 0) { + DPRINTF("%s: Failed to get CP0_WIRED (%d)\n", __func__, err); + ret = err; + } + err = kvm_mips_get_one_reg(cs, KVM_REG_MIPS_CP0_HWRENA, &env->CP0_HWREna); + if (err < 0) { + DPRINTF("%s: Failed to get CP0_HWRENA (%d)\n", __func__, err); + ret = err; + } + err = kvm_mips_get_one_ulreg(cs, KVM_REG_MIPS_CP0_BADVADDR, + &env->CP0_BadVAddr); + if (err < 0) { + DPRINTF("%s: Failed to get CP0_BADVADDR (%d)\n", __func__, err); + ret = err; + } + err = kvm_mips_get_one_ulreg(cs, KVM_REG_MIPS_CP0_ENTRYHI, + &env->CP0_EntryHi); + if (err < 0) { + DPRINTF("%s: Failed to get CP0_ENTRYHI (%d)\n", __func__, err); + ret = err; + } + err = kvm_mips_get_one_reg(cs, KVM_REG_MIPS_CP0_COMPARE, + &env->CP0_Compare); + if (err < 0) { + DPRINTF("%s: Failed to get CP0_COMPARE (%d)\n", __func__, err); + ret = err; + } + err = kvm_mips_get_one_reg(cs, KVM_REG_MIPS_CP0_STATUS, &env->CP0_Status); + if (err < 0) { + DPRINTF("%s: Failed to get CP0_STATUS (%d)\n", __func__, err); + ret = err; + } + + /* If VM clock stopped then state was already saved when it was stopped */ + if (runstate_is_running()) { + err = kvm_mips_save_count(cs); + if (err < 0) { + ret = err; + } + } + + err = kvm_mips_get_one_ulreg(cs, KVM_REG_MIPS_CP0_EPC, &env->CP0_EPC); + if (err < 0) { + DPRINTF("%s: Failed to get CP0_EPC (%d)\n", __func__, err); + ret = err; + } + err = kvm_mips_get_one_reg(cs, KVM_REG_MIPS_CP0_PRID, &env->CP0_PRid); + if (err < 0) { + DPRINTF("%s: Failed to get CP0_PRID (%d)\n", __func__, err); + ret = err; + } + err = kvm_mips_get_one_reg(cs, KVM_REG_MIPS_CP0_CONFIG, &env->CP0_Config0); + if (err < 0) { + DPRINTF("%s: Failed to get CP0_CONFIG (%d)\n", __func__, err); + ret = err; + } + err = kvm_mips_get_one_reg(cs, KVM_REG_MIPS_CP0_CONFIG1, &env->CP0_Config1); + if (err < 0) { + DPRINTF("%s: Failed to get CP0_CONFIG1 (%d)\n", __func__, err); + ret = err; + } + err = kvm_mips_get_one_reg(cs, KVM_REG_MIPS_CP0_CONFIG2, &env->CP0_Config2); + if (err < 0) { + DPRINTF("%s: Failed to get CP0_CONFIG2 (%d)\n", __func__, err); + ret = err; + } + err = kvm_mips_get_one_reg(cs, KVM_REG_MIPS_CP0_CONFIG3, &env->CP0_Config3); + if (err < 0) { + DPRINTF("%s: Failed to get CP0_CONFIG3 (%d)\n", __func__, err); + ret = err; + } + err = kvm_mips_get_one_reg(cs, KVM_REG_MIPS_CP0_CONFIG4, &env->CP0_Config4); + if (err < 0) { + DPRINTF("%s: Failed to get CP0_CONFIG4 (%d)\n", __func__, err); + ret = err; + } + err = kvm_mips_get_one_reg(cs, KVM_REG_MIPS_CP0_CONFIG5, &env->CP0_Config5); + if (err < 0) { + DPRINTF("%s: Failed to get CP0_CONFIG5 (%d)\n", __func__, err); + ret = err; + } + err = kvm_mips_get_one_ulreg(cs, KVM_REG_MIPS_CP0_ERROREPC, + &env->CP0_ErrorEPC); + if (err < 0) { + DPRINTF("%s: Failed to get CP0_ERROREPC (%d)\n", __func__, err); + ret = err; + } + + return ret; +} + +int kvm_arch_put_registers(CPUState *cs, int level) +{ + MIPSCPU *cpu = MIPS_CPU(cs); + CPUMIPSState *env = &cpu->env; + struct kvm_regs regs; + int ret; + int i; + + /* Set the registers based on QEMU's view of things */ + for (i = 0; i < 32; i++) { + regs.gpr[i] = (int64_t)(target_long)env->active_tc.gpr[i]; + } + + regs.hi = (int64_t)(target_long)env->active_tc.HI[0]; + regs.lo = (int64_t)(target_long)env->active_tc.LO[0]; + regs.pc = (int64_t)(target_long)env->active_tc.PC; + + ret = kvm_vcpu_ioctl(cs, KVM_SET_REGS, ®s); + + if (ret < 0) { + return ret; + } + + ret = kvm_mips_put_cp0_registers(cs, level); + if (ret < 0) { + return ret; + } + + ret = kvm_mips_put_fpu_registers(cs, level); + if (ret < 0) { + return ret; + } + + return ret; +} + +int kvm_arch_get_registers(CPUState *cs) +{ + MIPSCPU *cpu = MIPS_CPU(cs); + CPUMIPSState *env = &cpu->env; + int ret = 0; + struct kvm_regs regs; + int i; + + /* Get the current register set as KVM seems it */ + ret = kvm_vcpu_ioctl(cs, KVM_GET_REGS, ®s); + + if (ret < 0) { + return ret; + } + + for (i = 0; i < 32; i++) { + env->active_tc.gpr[i] = regs.gpr[i]; + } + + env->active_tc.HI[0] = regs.hi; + env->active_tc.LO[0] = regs.lo; + env->active_tc.PC = regs.pc; + + kvm_mips_get_cp0_registers(cs); + kvm_mips_get_fpu_registers(cs); + + return ret; +} + +int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route, + uint64_t address, uint32_t data, PCIDevice *dev) +{ + return 0; +} + +int kvm_arch_add_msi_route_post(struct kvm_irq_routing_entry *route, + int vector, PCIDevice *dev) +{ + return 0; +} + +int kvm_arch_release_virq_post(int virq) +{ + return 0; +} + +int kvm_arch_msi_data_to_gsi(uint32_t data) +{ + abort(); +} |