| Message ID | 20230621145500.25624-5-yongxuan.wang@sifive.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v4,1/6] update-linux-headers: sync-up header with Linux for KVM AIA support placeholder | expand |
On 6/21/23 11:54, Yong-Xuan Wang wrote: > implement a function to create an KVM AIA chip > > Signed-off-by: Yong-Xuan Wang <yongxuan.wang@sifive.com> > Reviewed-by: Jim Shu <jim.shu@sifive.com> > --- Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com> > target/riscv/kvm.c | 163 +++++++++++++++++++++++++++++++++++++++ > target/riscv/kvm_riscv.h | 6 ++ > 2 files changed, 169 insertions(+) > > diff --git a/target/riscv/kvm.c b/target/riscv/kvm.c > index eb469e8ca5..3dd8467031 100644 > --- a/target/riscv/kvm.c > +++ b/target/riscv/kvm.c > @@ -34,6 +34,7 @@ > #include "exec/address-spaces.h" > #include "hw/boards.h" > #include "hw/irq.h" > +#include "hw/intc/riscv_imsic.h" > #include "qemu/log.h" > #include "hw/loader.h" > #include "kvm_riscv.h" > @@ -41,6 +42,7 @@ > #include "chardev/char-fe.h" > #include "migration/migration.h" > #include "sysemu/runstate.h" > +#include "hw/riscv/numa.h" > > static uint64_t kvm_riscv_reg_id(CPURISCVState *env, uint64_t type, > uint64_t idx) > @@ -548,3 +550,164 @@ bool kvm_arch_cpu_check_are_resettable(void) > void kvm_arch_accel_class_init(ObjectClass *oc) > { > } > + > +char *kvm_aia_mode_str(uint64_t aia_mode) > +{ > + const char *val; > + > + switch (aia_mode) { > + case KVM_DEV_RISCV_AIA_MODE_EMUL: > + val = "emul"; > + break; > + case KVM_DEV_RISCV_AIA_MODE_HWACCEL: > + val = "hwaccel"; > + break; > + case KVM_DEV_RISCV_AIA_MODE_AUTO: > + default: > + val = "auto"; > + break; > + }; > + > + return g_strdup(val); > +} > + > +void kvm_riscv_aia_create(MachineState *machine, > + uint64_t aia_mode, uint64_t group_shift, > + uint64_t aia_irq_num, uint64_t aia_msi_num, > + uint64_t aplic_base, uint64_t imsic_base, > + uint64_t guest_num) > +{ > + int ret, i; > + int aia_fd = -1; > + uint64_t default_aia_mode; > + uint64_t socket_count = riscv_socket_count(machine); > + uint64_t max_hart_per_socket = 0; > + uint64_t socket, base_hart, hart_count, socket_imsic_base, imsic_addr; > + uint64_t socket_bits, hart_bits, guest_bits; > + > + aia_fd = kvm_create_device(kvm_state, KVM_DEV_TYPE_RISCV_AIA, false); > + > + if (aia_fd < 0) { > + error_report("Unable to create in-kernel irqchip"); > + exit(1); > + } > + > + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CONFIG, > + KVM_DEV_RISCV_AIA_CONFIG_MODE, > + &default_aia_mode, false, NULL); > + if (ret < 0) { > + error_report("KVM AIA: fail to get current KVM AIA mode"); > + exit(1); > + } > + qemu_log("KVM AIA: default mode is %s\n", > + kvm_aia_mode_str(default_aia_mode)); > + > + if (default_aia_mode != aia_mode) { > + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CONFIG, > + KVM_DEV_RISCV_AIA_CONFIG_MODE, > + &aia_mode, true, NULL); > + if (ret < 0) > + warn_report("KVM AIA: fail to set KVM AIA mode"); > + else > + qemu_log("KVM AIA: set current mode to %s\n", > + kvm_aia_mode_str(aia_mode)); > + } > + > + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CONFIG, > + KVM_DEV_RISCV_AIA_CONFIG_SRCS, > + &aia_irq_num, true, NULL); > + if (ret < 0) { > + error_report("KVM AIA: fail to set number of input irq lines"); > + exit(1); > + } > + > + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CONFIG, > + KVM_DEV_RISCV_AIA_CONFIG_IDS, > + &aia_msi_num, true, NULL); > + if (ret < 0) { > + error_report("KVM AIA: fail to set number of msi"); > + exit(1); > + } > + > + socket_bits = find_last_bit(&socket_count, BITS_PER_LONG) + 1; > + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CONFIG, > + KVM_DEV_RISCV_AIA_CONFIG_GROUP_BITS, > + &socket_bits, true, NULL); > + if (ret < 0) { > + error_report("KVM AIA: fail to set group_bits"); > + exit(1); > + } > + > + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CONFIG, > + KVM_DEV_RISCV_AIA_CONFIG_GROUP_SHIFT, > + &group_shift, true, NULL); > + if (ret < 0) { > + error_report("KVM AIA: fail to set group_shift"); > + exit(1); > + } > + > + guest_bits = guest_num == 0 ? 0 : > + find_last_bit(&guest_num, BITS_PER_LONG) + 1; > + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CONFIG, > + KVM_DEV_RISCV_AIA_CONFIG_GUEST_BITS, > + &guest_bits, true, NULL); > + if (ret < 0) { > + error_report("KVM AIA: fail to set guest_bits"); > + exit(1); > + } > + > + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_ADDR, > + KVM_DEV_RISCV_AIA_ADDR_APLIC, > + &aplic_base, true, NULL); > + if (ret < 0) { > + error_report("KVM AIA: fail to set the base address of APLIC"); > + exit(1); > + } > + > + for (socket = 0; socket < socket_count; socket++) { > + socket_imsic_base = imsic_base + socket * (1U << group_shift); > + hart_count = riscv_socket_hart_count(machine, socket); > + base_hart = riscv_socket_first_hartid(machine, socket); > + > + if (max_hart_per_socket < hart_count) { > + max_hart_per_socket = hart_count; > + } > + > + for (i = 0; i < hart_count; i++) { > + imsic_addr = socket_imsic_base + i * IMSIC_HART_SIZE(guest_bits); > + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_ADDR, > + KVM_DEV_RISCV_AIA_ADDR_IMSIC(i + base_hart), > + &imsic_addr, true, NULL); > + if (ret < 0) { > + error_report("KVM AIA: fail to set the address of IMSICs"); > + exit(1); > + } > + } > + } > + > + hart_bits = find_last_bit(&max_hart_per_socket, BITS_PER_LONG) + 1; > + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CONFIG, > + KVM_DEV_RISCV_AIA_CONFIG_HART_BITS, > + &hart_bits, true, NULL); > + if (ret < 0) { > + error_report("KVM AIA: fail to set hart_bits"); > + exit(1); > + } > + > + if (kvm_has_gsi_routing()) { > + for (uint64_t idx = 0; idx < aia_irq_num + 1; ++idx) { > + /* KVM AIA only has one APLIC instance */ > + kvm_irqchip_add_irq_route(kvm_state, idx, 0, idx); > + } > + kvm_gsi_routing_allowed = true; > + kvm_irqchip_commit_routes(kvm_state); > + } > + > + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CTRL, > + KVM_DEV_RISCV_AIA_CTRL_INIT, > + NULL, true, NULL); > + if (ret < 0) { > + error_report("KVM AIA: initialized fail"); > + exit(1); > + } > +} > diff --git a/target/riscv/kvm_riscv.h b/target/riscv/kvm_riscv.h > index ed281bdce0..a61f552d1d 100644 > --- a/target/riscv/kvm_riscv.h > +++ b/target/riscv/kvm_riscv.h > @@ -21,5 +21,11 @@ > > void kvm_riscv_reset_vcpu(RISCVCPU *cpu); > void kvm_riscv_set_irq(RISCVCPU *cpu, int irq, int level); > +char *kvm_aia_mode_str(uint64_t aia_mode); > +void kvm_riscv_aia_create(MachineState *machine, > + uint64_t aia_mode, uint64_t group_shift, > + uint64_t aia_irq_num, uint64_t aia_msi_num, > + uint64_t aplic_base, uint64_t imsic_base, > + uint64_t guest_num); > > #endif
On Wed, Jun 21, 2023 at 02:54:54PM +0000, Yong-Xuan Wang wrote: > implement a function to create an KVM AIA chip This is a bit too terse. We should at least summarize the KVM API this uses. > > Signed-off-by: Yong-Xuan Wang <yongxuan.wang@sifive.com> > Reviewed-by: Jim Shu <jim.shu@sifive.com> > --- > target/riscv/kvm.c | 163 +++++++++++++++++++++++++++++++++++++++ > target/riscv/kvm_riscv.h | 6 ++ > 2 files changed, 169 insertions(+) > > diff --git a/target/riscv/kvm.c b/target/riscv/kvm.c > index eb469e8ca5..3dd8467031 100644 > --- a/target/riscv/kvm.c > +++ b/target/riscv/kvm.c > @@ -34,6 +34,7 @@ > #include "exec/address-spaces.h" > #include "hw/boards.h" > #include "hw/irq.h" > +#include "hw/intc/riscv_imsic.h" > #include "qemu/log.h" > #include "hw/loader.h" > #include "kvm_riscv.h" > @@ -41,6 +42,7 @@ > #include "chardev/char-fe.h" > #include "migration/migration.h" > #include "sysemu/runstate.h" > +#include "hw/riscv/numa.h" > > static uint64_t kvm_riscv_reg_id(CPURISCVState *env, uint64_t type, > uint64_t idx) > @@ -548,3 +550,164 @@ bool kvm_arch_cpu_check_are_resettable(void) > void kvm_arch_accel_class_init(ObjectClass *oc) > { > } > + > +char *kvm_aia_mode_str(uint64_t aia_mode) > +{ > + const char *val; > + > + switch (aia_mode) { > + case KVM_DEV_RISCV_AIA_MODE_EMUL: > + val = "emul"; > + break; > + case KVM_DEV_RISCV_AIA_MODE_HWACCEL: > + val = "hwaccel"; > + break; > + case KVM_DEV_RISCV_AIA_MODE_AUTO: > + default: > + val = "auto"; > + break; > + }; > + > + return g_strdup(val); There's no need to duplicate statically allocated strings unless they need to be manipulated. These strings do not, so this should just be const char *kvm_aia_mode_str(uint64_t aia_mode) { switch (aia_mode) { case KVM_DEV_RISCV_AIA_MODE_EMUL: return "emul"; ... or even just an array const char *kvm_aia_mode_str[] = { "emul", "hwaccel", "auto" }; > +} > + > +void kvm_riscv_aia_create(MachineState *machine, > + uint64_t aia_mode, uint64_t group_shift, > + uint64_t aia_irq_num, uint64_t aia_msi_num, > + uint64_t aplic_base, uint64_t imsic_base, > + uint64_t guest_num) > +{ > + int ret, i; > + int aia_fd = -1; > + uint64_t default_aia_mode; > + uint64_t socket_count = riscv_socket_count(machine); > + uint64_t max_hart_per_socket = 0; > + uint64_t socket, base_hart, hart_count, socket_imsic_base, imsic_addr; > + uint64_t socket_bits, hart_bits, guest_bits; > + > + aia_fd = kvm_create_device(kvm_state, KVM_DEV_TYPE_RISCV_AIA, false); > + > + if (aia_fd < 0) { > + error_report("Unable to create in-kernel irqchip"); > + exit(1); > + } > + For all the "fail to..." error messages below I would change them to "failed to..." > + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CONFIG, > + KVM_DEV_RISCV_AIA_CONFIG_MODE, > + &default_aia_mode, false, NULL); > + if (ret < 0) { > + error_report("KVM AIA: fail to get current KVM AIA mode"); > + exit(1); > + } > + qemu_log("KVM AIA: default mode is %s\n", > + kvm_aia_mode_str(default_aia_mode)); > + > + if (default_aia_mode != aia_mode) { > + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CONFIG, > + KVM_DEV_RISCV_AIA_CONFIG_MODE, > + &aia_mode, true, NULL); > + if (ret < 0) > + warn_report("KVM AIA: fail to set KVM AIA mode"); > + else > + qemu_log("KVM AIA: set current mode to %s\n", > + kvm_aia_mode_str(aia_mode)); > + } > + > + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CONFIG, > + KVM_DEV_RISCV_AIA_CONFIG_SRCS, > + &aia_irq_num, true, NULL); > + if (ret < 0) { > + error_report("KVM AIA: fail to set number of input irq lines"); > + exit(1); > + } > + > + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CONFIG, > + KVM_DEV_RISCV_AIA_CONFIG_IDS, > + &aia_msi_num, true, NULL); > + if (ret < 0) { > + error_report("KVM AIA: fail to set number of msi"); > + exit(1); > + } > + > + socket_bits = find_last_bit(&socket_count, BITS_PER_LONG) + 1; > + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CONFIG, > + KVM_DEV_RISCV_AIA_CONFIG_GROUP_BITS, > + &socket_bits, true, NULL); > + if (ret < 0) { > + error_report("KVM AIA: fail to set group_bits"); > + exit(1); > + } > + > + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CONFIG, > + KVM_DEV_RISCV_AIA_CONFIG_GROUP_SHIFT, > + &group_shift, true, NULL); > + if (ret < 0) { > + error_report("KVM AIA: fail to set group_shift"); > + exit(1); > + } > + > + guest_bits = guest_num == 0 ? 0 : > + find_last_bit(&guest_num, BITS_PER_LONG) + 1; > + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CONFIG, > + KVM_DEV_RISCV_AIA_CONFIG_GUEST_BITS, > + &guest_bits, true, NULL); > + if (ret < 0) { > + error_report("KVM AIA: fail to set guest_bits"); > + exit(1); > + } > + > + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_ADDR, > + KVM_DEV_RISCV_AIA_ADDR_APLIC, > + &aplic_base, true, NULL); > + if (ret < 0) { > + error_report("KVM AIA: fail to set the base address of APLIC"); > + exit(1); > + } > + > + for (socket = 0; socket < socket_count; socket++) { > + socket_imsic_base = imsic_base + socket * (1U << group_shift); > + hart_count = riscv_socket_hart_count(machine, socket); > + base_hart = riscv_socket_first_hartid(machine, socket); > + > + if (max_hart_per_socket < hart_count) { > + max_hart_per_socket = hart_count; > + } > + > + for (i = 0; i < hart_count; i++) { > + imsic_addr = socket_imsic_base + i * IMSIC_HART_SIZE(guest_bits); > + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_ADDR, > + KVM_DEV_RISCV_AIA_ADDR_IMSIC(i + base_hart), > + &imsic_addr, true, NULL); > + if (ret < 0) { > + error_report("KVM AIA: fail to set the address of IMSICs"); ("KVM AIA: failed to set the IMSIC address for hart index %d", i) > + exit(1); > + } > + } > + } > + > + hart_bits = find_last_bit(&max_hart_per_socket, BITS_PER_LONG) + 1; > + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CONFIG, > + KVM_DEV_RISCV_AIA_CONFIG_HART_BITS, > + &hart_bits, true, NULL); > + if (ret < 0) { > + error_report("KVM AIA: fail to set hart_bits"); > + exit(1); > + } > + > + if (kvm_has_gsi_routing()) { > + for (uint64_t idx = 0; idx < aia_irq_num + 1; ++idx) { > + /* KVM AIA only has one APLIC instance */ > + kvm_irqchip_add_irq_route(kvm_state, idx, 0, idx); > + } > + kvm_gsi_routing_allowed = true; > + kvm_irqchip_commit_routes(kvm_state); > + } > + > + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CTRL, > + KVM_DEV_RISCV_AIA_CTRL_INIT, > + NULL, true, NULL); > + if (ret < 0) { > + error_report("KVM AIA: initialized fail"); "KVM AIA: failed to initialize" > + exit(1); > + } > +} > diff --git a/target/riscv/kvm_riscv.h b/target/riscv/kvm_riscv.h > index ed281bdce0..a61f552d1d 100644 > --- a/target/riscv/kvm_riscv.h > +++ b/target/riscv/kvm_riscv.h > @@ -21,5 +21,11 @@ > > void kvm_riscv_reset_vcpu(RISCVCPU *cpu); > void kvm_riscv_set_irq(RISCVCPU *cpu, int irq, int level); > +char *kvm_aia_mode_str(uint64_t aia_mode); > +void kvm_riscv_aia_create(MachineState *machine, > + uint64_t aia_mode, uint64_t group_shift, > + uint64_t aia_irq_num, uint64_t aia_msi_num, > + uint64_t aplic_base, uint64_t imsic_base, > + uint64_t guest_num); > > #endif > -- > 2.17.1 > > Thanks, drew
diff --git a/target/riscv/kvm.c b/target/riscv/kvm.c index eb469e8ca5..3dd8467031 100644 --- a/target/riscv/kvm.c +++ b/target/riscv/kvm.c @@ -34,6 +34,7 @@ #include "exec/address-spaces.h" #include "hw/boards.h" #include "hw/irq.h" +#include "hw/intc/riscv_imsic.h" #include "qemu/log.h" #include "hw/loader.h" #include "kvm_riscv.h" @@ -41,6 +42,7 @@ #include "chardev/char-fe.h" #include "migration/migration.h" #include "sysemu/runstate.h" +#include "hw/riscv/numa.h" static uint64_t kvm_riscv_reg_id(CPURISCVState *env, uint64_t type, uint64_t idx) @@ -548,3 +550,164 @@ bool kvm_arch_cpu_check_are_resettable(void) void kvm_arch_accel_class_init(ObjectClass *oc) { } + +char *kvm_aia_mode_str(uint64_t aia_mode) +{ + const char *val; + + switch (aia_mode) { + case KVM_DEV_RISCV_AIA_MODE_EMUL: + val = "emul"; + break; + case KVM_DEV_RISCV_AIA_MODE_HWACCEL: + val = "hwaccel"; + break; + case KVM_DEV_RISCV_AIA_MODE_AUTO: + default: + val = "auto"; + break; + }; + + return g_strdup(val); +} + +void kvm_riscv_aia_create(MachineState *machine, + uint64_t aia_mode, uint64_t group_shift, + uint64_t aia_irq_num, uint64_t aia_msi_num, + uint64_t aplic_base, uint64_t imsic_base, + uint64_t guest_num) +{ + int ret, i; + int aia_fd = -1; + uint64_t default_aia_mode; + uint64_t socket_count = riscv_socket_count(machine); + uint64_t max_hart_per_socket = 0; + uint64_t socket, base_hart, hart_count, socket_imsic_base, imsic_addr; + uint64_t socket_bits, hart_bits, guest_bits; + + aia_fd = kvm_create_device(kvm_state, KVM_DEV_TYPE_RISCV_AIA, false); + + if (aia_fd < 0) { + error_report("Unable to create in-kernel irqchip"); + exit(1); + } + + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CONFIG, + KVM_DEV_RISCV_AIA_CONFIG_MODE, + &default_aia_mode, false, NULL); + if (ret < 0) { + error_report("KVM AIA: fail to get current KVM AIA mode"); + exit(1); + } + qemu_log("KVM AIA: default mode is %s\n", + kvm_aia_mode_str(default_aia_mode)); + + if (default_aia_mode != aia_mode) { + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CONFIG, + KVM_DEV_RISCV_AIA_CONFIG_MODE, + &aia_mode, true, NULL); + if (ret < 0) + warn_report("KVM AIA: fail to set KVM AIA mode"); + else + qemu_log("KVM AIA: set current mode to %s\n", + kvm_aia_mode_str(aia_mode)); + } + + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CONFIG, + KVM_DEV_RISCV_AIA_CONFIG_SRCS, + &aia_irq_num, true, NULL); + if (ret < 0) { + error_report("KVM AIA: fail to set number of input irq lines"); + exit(1); + } + + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CONFIG, + KVM_DEV_RISCV_AIA_CONFIG_IDS, + &aia_msi_num, true, NULL); + if (ret < 0) { + error_report("KVM AIA: fail to set number of msi"); + exit(1); + } + + socket_bits = find_last_bit(&socket_count, BITS_PER_LONG) + 1; + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CONFIG, + KVM_DEV_RISCV_AIA_CONFIG_GROUP_BITS, + &socket_bits, true, NULL); + if (ret < 0) { + error_report("KVM AIA: fail to set group_bits"); + exit(1); + } + + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CONFIG, + KVM_DEV_RISCV_AIA_CONFIG_GROUP_SHIFT, + &group_shift, true, NULL); + if (ret < 0) { + error_report("KVM AIA: fail to set group_shift"); + exit(1); + } + + guest_bits = guest_num == 0 ? 0 : + find_last_bit(&guest_num, BITS_PER_LONG) + 1; + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CONFIG, + KVM_DEV_RISCV_AIA_CONFIG_GUEST_BITS, + &guest_bits, true, NULL); + if (ret < 0) { + error_report("KVM AIA: fail to set guest_bits"); + exit(1); + } + + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_ADDR, + KVM_DEV_RISCV_AIA_ADDR_APLIC, + &aplic_base, true, NULL); + if (ret < 0) { + error_report("KVM AIA: fail to set the base address of APLIC"); + exit(1); + } + + for (socket = 0; socket < socket_count; socket++) { + socket_imsic_base = imsic_base + socket * (1U << group_shift); + hart_count = riscv_socket_hart_count(machine, socket); + base_hart = riscv_socket_first_hartid(machine, socket); + + if (max_hart_per_socket < hart_count) { + max_hart_per_socket = hart_count; + } + + for (i = 0; i < hart_count; i++) { + imsic_addr = socket_imsic_base + i * IMSIC_HART_SIZE(guest_bits); + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_ADDR, + KVM_DEV_RISCV_AIA_ADDR_IMSIC(i + base_hart), + &imsic_addr, true, NULL); + if (ret < 0) { + error_report("KVM AIA: fail to set the address of IMSICs"); + exit(1); + } + } + } + + hart_bits = find_last_bit(&max_hart_per_socket, BITS_PER_LONG) + 1; + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CONFIG, + KVM_DEV_RISCV_AIA_CONFIG_HART_BITS, + &hart_bits, true, NULL); + if (ret < 0) { + error_report("KVM AIA: fail to set hart_bits"); + exit(1); + } + + if (kvm_has_gsi_routing()) { + for (uint64_t idx = 0; idx < aia_irq_num + 1; ++idx) { + /* KVM AIA only has one APLIC instance */ + kvm_irqchip_add_irq_route(kvm_state, idx, 0, idx); + } + kvm_gsi_routing_allowed = true; + kvm_irqchip_commit_routes(kvm_state); + } + + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CTRL, + KVM_DEV_RISCV_AIA_CTRL_INIT, + NULL, true, NULL); + if (ret < 0) { + error_report("KVM AIA: initialized fail"); + exit(1); + } +} diff --git a/target/riscv/kvm_riscv.h b/target/riscv/kvm_riscv.h index ed281bdce0..a61f552d1d 100644 --- a/target/riscv/kvm_riscv.h +++ b/target/riscv/kvm_riscv.h @@ -21,5 +21,11 @@ void kvm_riscv_reset_vcpu(RISCVCPU *cpu); void kvm_riscv_set_irq(RISCVCPU *cpu, int irq, int level); +char *kvm_aia_mode_str(uint64_t aia_mode); +void kvm_riscv_aia_create(MachineState *machine, + uint64_t aia_mode, uint64_t group_shift, + uint64_t aia_irq_num, uint64_t aia_msi_num, + uint64_t aplic_base, uint64_t imsic_base, + uint64_t guest_num); #endif