diff options
Diffstat (limited to 'tools/testing/selftests/kvm/aarch64/vgic_irq.c')
| -rw-r--r-- | tools/testing/selftests/kvm/aarch64/vgic_irq.c | 847 |
1 files changed, 0 insertions, 847 deletions
diff --git a/tools/testing/selftests/kvm/aarch64/vgic_irq.c b/tools/testing/selftests/kvm/aarch64/vgic_irq.c deleted file mode 100644 index f4ac28d53747..000000000000 --- a/tools/testing/selftests/kvm/aarch64/vgic_irq.c +++ /dev/null @@ -1,847 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * vgic_irq.c - Test userspace injection of IRQs - * - * This test validates the injection of IRQs from userspace using various - * methods (e.g., KVM_IRQ_LINE) and modes (e.g., EOI). The guest "asks" the - * host to inject a specific intid via a GUEST_SYNC call, and then checks that - * it received it. - */ -#include <asm/kvm.h> -#include <asm/kvm_para.h> -#include <sys/eventfd.h> -#include <linux/sizes.h> - -#include "processor.h" -#include "test_util.h" -#include "kvm_util.h" -#include "gic.h" -#include "gic_v3.h" -#include "vgic.h" - -/* - * Stores the user specified args; it's passed to the guest and to every test - * function. - */ -struct test_args { - uint32_t nr_irqs; /* number of KVM supported IRQs. */ - bool eoi_split; /* 1 is eoir+dir, 0 is eoir only */ - bool level_sensitive; /* 1 is level, 0 is edge */ - int kvm_max_routes; /* output of KVM_CAP_IRQ_ROUTING */ - bool kvm_supports_irqfd; /* output of KVM_CAP_IRQFD */ -}; - -/* - * KVM implements 32 priority levels: - * 0x00 (highest priority) - 0xF8 (lowest priority), in steps of 8 - * - * Note that these macros will still be correct in the case that KVM implements - * more priority levels. Also note that 32 is the minimum for GICv3 and GICv2. - */ -#define KVM_NUM_PRIOS 32 -#define KVM_PRIO_SHIFT 3 /* steps of 8 = 1 << 3 */ -#define KVM_PRIO_STEPS (1 << KVM_PRIO_SHIFT) /* 8 */ -#define LOWEST_PRIO (KVM_NUM_PRIOS - 1) -#define CPU_PRIO_MASK (LOWEST_PRIO << KVM_PRIO_SHIFT) /* 0xf8 */ -#define IRQ_DEFAULT_PRIO (LOWEST_PRIO - 1) -#define IRQ_DEFAULT_PRIO_REG (IRQ_DEFAULT_PRIO << KVM_PRIO_SHIFT) /* 0xf0 */ - -/* - * The kvm_inject_* utilities are used by the guest to ask the host to inject - * interrupts (e.g., using the KVM_IRQ_LINE ioctl). - */ - -typedef enum { - KVM_INJECT_EDGE_IRQ_LINE = 1, - KVM_SET_IRQ_LINE, - KVM_SET_IRQ_LINE_HIGH, - KVM_SET_LEVEL_INFO_HIGH, - KVM_INJECT_IRQFD, - KVM_WRITE_ISPENDR, - KVM_WRITE_ISACTIVER, -} kvm_inject_cmd; - -struct kvm_inject_args { - kvm_inject_cmd cmd; - uint32_t first_intid; - uint32_t num; - int level; - bool expect_failure; -}; - -/* Used on the guest side to perform the hypercall. */ -static void kvm_inject_call(kvm_inject_cmd cmd, uint32_t first_intid, - uint32_t num, int level, bool expect_failure); - -/* Used on the host side to get the hypercall info. */ -static void kvm_inject_get_call(struct kvm_vm *vm, struct ucall *uc, - struct kvm_inject_args *args); - -#define _KVM_INJECT_MULTI(cmd, intid, num, expect_failure) \ - kvm_inject_call(cmd, intid, num, -1 /* not used */, expect_failure) - -#define KVM_INJECT_MULTI(cmd, intid, num) \ - _KVM_INJECT_MULTI(cmd, intid, num, false) - -#define _KVM_INJECT(cmd, intid, expect_failure) \ - _KVM_INJECT_MULTI(cmd, intid, 1, expect_failure) - -#define KVM_INJECT(cmd, intid) \ - _KVM_INJECT_MULTI(cmd, intid, 1, false) - -#define KVM_ACTIVATE(cmd, intid) \ - kvm_inject_call(cmd, intid, 1, 1, false); - -struct kvm_inject_desc { - kvm_inject_cmd cmd; - /* can inject PPIs, PPIs, and/or SPIs. */ - bool sgi, ppi, spi; -}; - -static struct kvm_inject_desc inject_edge_fns[] = { - /* sgi ppi spi */ - { KVM_INJECT_EDGE_IRQ_LINE, false, false, true }, - { KVM_INJECT_IRQFD, false, false, true }, - { KVM_WRITE_ISPENDR, true, false, true }, - { 0, }, -}; - -static struct kvm_inject_desc inject_level_fns[] = { - /* sgi ppi spi */ - { KVM_SET_IRQ_LINE_HIGH, false, true, true }, - { KVM_SET_LEVEL_INFO_HIGH, false, true, true }, - { KVM_INJECT_IRQFD, false, false, true }, - { KVM_WRITE_ISPENDR, false, true, true }, - { 0, }, -}; - -static struct kvm_inject_desc set_active_fns[] = { - /* sgi ppi spi */ - { KVM_WRITE_ISACTIVER, true, true, true }, - { 0, }, -}; - -#define for_each_inject_fn(t, f) \ - for ((f) = (t); (f)->cmd; (f)++) - -#define for_each_supported_inject_fn(args, t, f) \ - for_each_inject_fn(t, f) \ - if ((args)->kvm_supports_irqfd || (f)->cmd != KVM_INJECT_IRQFD) - -#define for_each_supported_activate_fn(args, t, f) \ - for_each_supported_inject_fn((args), (t), (f)) - -/* Shared between the guest main thread and the IRQ handlers. */ -volatile uint64_t irq_handled; -volatile uint32_t irqnr_received[MAX_SPI + 1]; - -static void reset_stats(void) -{ - int i; - - irq_handled = 0; - for (i = 0; i <= MAX_SPI; i++) - irqnr_received[i] = 0; -} - -static uint64_t gic_read_ap1r0(void) -{ - uint64_t reg = read_sysreg_s(SYS_ICC_AP1R0_EL1); - - dsb(sy); - return reg; -} - -static void gic_write_ap1r0(uint64_t val) -{ - write_sysreg_s(val, SYS_ICC_AP1R0_EL1); - isb(); -} - -static void guest_set_irq_line(uint32_t intid, uint32_t level); - -static void guest_irq_generic_handler(bool eoi_split, bool level_sensitive) -{ - uint32_t intid = gic_get_and_ack_irq(); - - if (intid == IAR_SPURIOUS) - return; - - GUEST_ASSERT(gic_irq_get_active(intid)); - - if (!level_sensitive) - GUEST_ASSERT(!gic_irq_get_pending(intid)); - - if (level_sensitive) - guest_set_irq_line(intid, 0); - - GUEST_ASSERT(intid < MAX_SPI); - irqnr_received[intid] += 1; - irq_handled += 1; - - gic_set_eoi(intid); - GUEST_ASSERT_EQ(gic_read_ap1r0(), 0); - if (eoi_split) - gic_set_dir(intid); - - GUEST_ASSERT(!gic_irq_get_active(intid)); - GUEST_ASSERT(!gic_irq_get_pending(intid)); -} - -static void kvm_inject_call(kvm_inject_cmd cmd, uint32_t first_intid, - uint32_t num, int level, bool expect_failure) -{ - struct kvm_inject_args args = { - .cmd = cmd, - .first_intid = first_intid, - .num = num, - .level = level, - .expect_failure = expect_failure, - }; - GUEST_SYNC(&args); -} - -#define GUEST_ASSERT_IAR_EMPTY() \ -do { \ - uint32_t _intid; \ - _intid = gic_get_and_ack_irq(); \ - GUEST_ASSERT(_intid == 0 || _intid == IAR_SPURIOUS); \ -} while (0) - -#define CAT_HELPER(a, b) a ## b -#define CAT(a, b) CAT_HELPER(a, b) -#define PREFIX guest_irq_handler_ -#define GUEST_IRQ_HANDLER_NAME(split, lev) CAT(PREFIX, CAT(split, lev)) -#define GENERATE_GUEST_IRQ_HANDLER(split, lev) \ -static void CAT(PREFIX, CAT(split, lev))(struct ex_regs *regs) \ -{ \ - guest_irq_generic_handler(split, lev); \ -} - -GENERATE_GUEST_IRQ_HANDLER(0, 0); -GENERATE_GUEST_IRQ_HANDLER(0, 1); -GENERATE_GUEST_IRQ_HANDLER(1, 0); -GENERATE_GUEST_IRQ_HANDLER(1, 1); - -static void (*guest_irq_handlers[2][2])(struct ex_regs *) = { - {GUEST_IRQ_HANDLER_NAME(0, 0), GUEST_IRQ_HANDLER_NAME(0, 1),}, - {GUEST_IRQ_HANDLER_NAME(1, 0), GUEST_IRQ_HANDLER_NAME(1, 1),}, -}; - -static void reset_priorities(struct test_args *args) -{ - int i; - - for (i = 0; i < args->nr_irqs; i++) - gic_set_priority(i, IRQ_DEFAULT_PRIO_REG); -} - -static void guest_set_irq_line(uint32_t intid, uint32_t level) -{ - kvm_inject_call(KVM_SET_IRQ_LINE, intid, 1, level, false); -} - -static void test_inject_fail(struct test_args *args, - uint32_t intid, kvm_inject_cmd cmd) -{ - reset_stats(); - - _KVM_INJECT(cmd, intid, true); - /* no IRQ to handle on entry */ - - GUEST_ASSERT_EQ(irq_handled, 0); - GUEST_ASSERT_IAR_EMPTY(); -} - -static void guest_inject(struct test_args *args, - uint32_t first_intid, uint32_t num, - kvm_inject_cmd cmd) -{ - uint32_t i; - - reset_stats(); - - /* Cycle over all priorities to make things more interesting. */ - for (i = first_intid; i < num + first_intid; i++) - gic_set_priority(i, (i % (KVM_NUM_PRIOS - 1)) << 3); - - asm volatile("msr daifset, #2" : : : "memory"); - KVM_INJECT_MULTI(cmd, first_intid, num); - - while (irq_handled < num) { - wfi(); - local_irq_enable(); - isb(); /* handle IRQ */ - local_irq_disable(); - } - local_irq_enable(); - - GUEST_ASSERT_EQ(irq_handled, num); - for (i = first_intid; i < num + first_intid; i++) - GUEST_ASSERT_EQ(irqnr_received[i], 1); - GUEST_ASSERT_IAR_EMPTY(); - - reset_priorities(args); -} - -/* - * Restore the active state of multiple concurrent IRQs (given by - * concurrent_irqs). This does what a live-migration would do on the - * destination side assuming there are some active IRQs that were not - * deactivated yet. - */ -static void guest_restore_active(struct test_args *args, - uint32_t first_intid, uint32_t num, - kvm_inject_cmd cmd) -{ - uint32_t prio, intid, ap1r; - int i; - - /* - * Set the priorities of the first (KVM_NUM_PRIOS - 1) IRQs - * in descending order, so intid+1 can preempt intid. - */ - for (i = 0, prio = (num - 1) * 8; i < num; i++, prio -= 8) { - GUEST_ASSERT(prio >= 0); - intid = i + first_intid; - gic_set_priority(intid, prio); - } - - /* - * In a real migration, KVM would restore all GIC state before running - * guest code. - */ - for (i = 0; i < num; i++) { - intid = i + first_intid; - KVM_ACTIVATE(cmd, intid); - ap1r = gic_read_ap1r0(); - ap1r |= 1U << i; - gic_write_ap1r0(ap1r); - } - - /* This is where the "migration" would occur. */ - - /* finish handling the IRQs starting with the highest priority one. */ - for (i = 0; i < num; i++) { - intid = num - i - 1 + first_intid; - gic_set_eoi(intid); - if (args->eoi_split) - gic_set_dir(intid); - } - - for (i = 0; i < num; i++) - GUEST_ASSERT(!gic_irq_get_active(i + first_intid)); - GUEST_ASSERT_EQ(gic_read_ap1r0(), 0); - GUEST_ASSERT_IAR_EMPTY(); -} - -/* - * Polls the IAR until it's not a spurious interrupt. - * - * This function should only be used in test_inject_preemption (with IRQs - * masked). - */ -static uint32_t wait_for_and_activate_irq(void) -{ - uint32_t intid; - - do { - asm volatile("wfi" : : : "memory"); - intid = gic_get_and_ack_irq(); - } while (intid == IAR_SPURIOUS); - - return intid; -} - -/* - * Inject multiple concurrent IRQs (num IRQs starting at first_intid) and - * handle them without handling the actual exceptions. This is done by masking - * interrupts for the whole test. - */ -static void test_inject_preemption(struct test_args *args, - uint32_t first_intid, int num, - kvm_inject_cmd cmd) -{ - uint32_t intid, prio, step = KVM_PRIO_STEPS; - int i; - - /* Set the priorities of the first (KVM_NUM_PRIOS - 1) IRQs - * in descending order, so intid+1 can preempt intid. - */ - for (i = 0, prio = (num - 1) * step; i < num; i++, prio -= step) { - GUEST_ASSERT(prio >= 0); - intid = i + first_intid; - gic_set_priority(intid, prio); - } - - local_irq_disable(); - - for (i = 0; i < num; i++) { - uint32_t tmp; - intid = i + first_intid; - KVM_INJECT(cmd, intid); - /* Each successive IRQ will preempt the previous one. */ - tmp = wait_for_and_activate_irq(); - GUEST_ASSERT_EQ(tmp, intid); - if (args->level_sensitive) - guest_set_irq_line(intid, 0); - } - - /* finish handling the IRQs starting with the highest priority one. */ - for (i = 0; i < num; i++) { - intid = num - i - 1 + first_intid; - gic_set_eoi(intid); - if (args->eoi_split) - gic_set_dir(intid); - } - - local_irq_enable(); - - for (i = 0; i < num; i++) - GUEST_ASSERT(!gic_irq_get_active(i + first_intid)); - GUEST_ASSERT_EQ(gic_read_ap1r0(), 0); - GUEST_ASSERT_IAR_EMPTY(); - - reset_priorities(args); -} - -static void test_injection(struct test_args *args, struct kvm_inject_desc *f) -{ - uint32_t nr_irqs = args->nr_irqs; - - if (f->sgi) { - guest_inject(args, MIN_SGI, 1, f->cmd); - guest_inject(args, 0, 16, f->cmd); - } - - if (f->ppi) - guest_inject(args, MIN_PPI, 1, f->cmd); - - if (f->spi) { - guest_inject(args, MIN_SPI, 1, f->cmd); - guest_inject(args, nr_irqs - 1, 1, f->cmd); - guest_inject(args, MIN_SPI, nr_irqs - MIN_SPI, f->cmd); - } -} - -static void test_injection_failure(struct test_args *args, - struct kvm_inject_desc *f) -{ - uint32_t bad_intid[] = { args->nr_irqs, 1020, 1024, 1120, 5120, ~0U, }; - int i; - - for (i = 0; i < ARRAY_SIZE(bad_intid); i++) - test_inject_fail(args, bad_intid[i], f->cmd); -} - -static void test_preemption(struct test_args *args, struct kvm_inject_desc *f) -{ - /* - * Test up to 4 levels of preemption. The reason is that KVM doesn't - * currently implement the ability to have more than the number-of-LRs - * number of concurrently active IRQs. The number of LRs implemented is - * IMPLEMENTATION DEFINED, however, it seems that most implement 4. - */ - if (f->sgi) - test_inject_preemption(args, MIN_SGI, 4, f->cmd); - - if (f->ppi) - test_inject_preemption(args, MIN_PPI, 4, f->cmd); - - if (f->spi) - test_inject_preemption(args, MIN_SPI, 4, f->cmd); -} - -static void test_restore_active(struct test_args *args, struct kvm_inject_desc *f) -{ - /* Test up to 4 active IRQs. Same reason as in test_preemption. */ - if (f->sgi) - guest_restore_active(args, MIN_SGI, 4, f->cmd); - - if (f->ppi) - guest_restore_active(args, MIN_PPI, 4, f->cmd); - - if (f->spi) - guest_restore_active(args, MIN_SPI, 4, f->cmd); -} - -static void guest_code(struct test_args *args) -{ - uint32_t i, nr_irqs = args->nr_irqs; - bool level_sensitive = args->level_sensitive; - struct kvm_inject_desc *f, *inject_fns; - - gic_init(GIC_V3, 1); - - for (i = 0; i < nr_irqs; i++) - gic_irq_enable(i); - - for (i = MIN_SPI; i < nr_irqs; i++) - gic_irq_set_config(i, !level_sensitive); - - gic_set_eoi_split(args->eoi_split); - - reset_priorities(args); - gic_set_priority_mask(CPU_PRIO_MASK); - - inject_fns = level_sensitive ? inject_level_fns - : inject_edge_fns; - - local_irq_enable(); - - /* Start the tests. */ - for_each_supported_inject_fn(args, inject_fns, f) { - test_injection(args, f); - test_preemption(args, f); - test_injection_failure(args, f); - } - - /* - * Restore the active state of IRQs. This would happen when live - * migrating IRQs in the middle of being handled. - */ - for_each_supported_activate_fn(args, set_active_fns, f) - test_restore_active(args, f); - - GUEST_DONE(); -} - -static void kvm_irq_line_check(struct kvm_vm *vm, uint32_t intid, int level, - struct test_args *test_args, bool expect_failure) -{ - int ret; - - if (!expect_failure) { - kvm_arm_irq_line(vm, intid, level); - } else { - /* The interface doesn't allow larger intid's. */ - if (intid > KVM_ARM_IRQ_NUM_MASK) - return; - - ret = _kvm_arm_irq_line(vm, intid, level); - TEST_ASSERT(ret != 0 && errno == EINVAL, - "Bad intid %i did not cause KVM_IRQ_LINE " - "error: rc: %i errno: %i", intid, ret, errno); - } -} - -void kvm_irq_set_level_info_check(int gic_fd, uint32_t intid, int level, - bool expect_failure) -{ - if (!expect_failure) { - kvm_irq_set_level_info(gic_fd, intid, level); - } else { - int ret = _kvm_irq_set_level_info(gic_fd, intid, level); - /* - * The kernel silently fails for invalid SPIs and SGIs (which - * are not level-sensitive). It only checks for intid to not - * spill over 1U << 10 (the max reserved SPI). Also, callers - * are supposed to mask the intid with 0x3ff (1023). - */ - if (intid > VGIC_MAX_RESERVED) - TEST_ASSERT(ret != 0 && errno == EINVAL, - "Bad intid %i did not cause VGIC_GRP_LEVEL_INFO " - "error: rc: %i errno: %i", intid, ret, errno); - else - TEST_ASSERT(!ret, "KVM_DEV_ARM_VGIC_GRP_LEVEL_INFO " - "for intid %i failed, rc: %i errno: %i", - intid, ret, errno); - } -} - -static void kvm_set_gsi_routing_irqchip_check(struct kvm_vm *vm, - uint32_t intid, uint32_t num, uint32_t kvm_max_routes, - bool expect_failure) -{ - struct kvm_irq_routing *routing; - int ret; - uint64_t i; - - assert(num <= kvm_max_routes && kvm_max_routes <= KVM_MAX_IRQ_ROUTES); - - routing = kvm_gsi_routing_create(); - for (i = intid; i < (uint64_t)intid + num; i++) - kvm_gsi_routing_irqchip_add(routing, i - MIN_SPI, i - MIN_SPI); - - if (!expect_failure) { - kvm_gsi_routing_write(vm, routing); - } else { - ret = _kvm_gsi_routing_write(vm, routing); - /* The kernel only checks e->irqchip.pin >= KVM_IRQCHIP_NUM_PINS */ - if (((uint64_t)intid + num - 1 - MIN_SPI) >= KVM_IRQCHIP_NUM_PINS) - TEST_ASSERT(ret != 0 && errno == EINVAL, - "Bad intid %u did not cause KVM_SET_GSI_ROUTING " - "error: rc: %i errno: %i", intid, ret, errno); - else - TEST_ASSERT(ret == 0, "KVM_SET_GSI_ROUTING " - "for intid %i failed, rc: %i errno: %i", - intid, ret, errno); - } -} - -static void kvm_irq_write_ispendr_check(int gic_fd, uint32_t intid, - struct kvm_vcpu *vcpu, - bool expect_failure) -{ - /* - * Ignore this when expecting failure as invalid intids will lead to - * either trying to inject SGIs when we configured the test to be - * level_sensitive (or the reverse), or inject large intids which - * will lead to writing above the ISPENDR register space (and we - * don't want to do that either). - */ - if (!expect_failure) - kvm_irq_write_ispendr(gic_fd, intid, vcpu); -} - -static void kvm_routing_and_irqfd_check(struct kvm_vm *vm, - uint32_t intid, uint32_t num, uint32_t kvm_max_routes, - bool expect_failure) -{ - int fd[MAX_SPI]; - uint64_t val; - int ret, f; - uint64_t i; - - /* - * There is no way to try injecting an SGI or PPI as the interface - * starts counting from the first SPI (above the private ones), so just - * exit. - */ - if (INTID_IS_SGI(intid) || INTID_IS_PPI(intid)) - return; - - kvm_set_gsi_routing_irqchip_check(vm, intid, num, - kvm_max_routes, expect_failure); - - /* - * If expect_failure, then just to inject anyway. These - * will silently fail. And in any case, the guest will check - * that no actual interrupt was injected for those cases. - */ - - for (f = 0, i = intid; i < (uint64_t)intid + num; i++, f++) { - fd[f] = eventfd(0, 0); - TEST_ASSERT(fd[f] != -1, __KVM_SYSCALL_ERROR("eventfd()", fd[f])); - } - - for (f = 0, i = intid; i < (uint64_t)intid + num; i++, f++) { - struct kvm_irqfd irqfd = { - .fd = fd[f], - .gsi = i - MIN_SPI, - }; - assert(i <= (uint64_t)UINT_MAX); - vm_ioctl(vm, KVM_IRQFD, &irqfd); - } - - for (f = 0, i = intid; i < (uint64_t)intid + num; i++, f++) { - val = 1; - ret = write(fd[f], &val, sizeof(uint64_t)); - TEST_ASSERT(ret == sizeof(uint64_t), - __KVM_SYSCALL_ERROR("write()", ret)); - } - - for (f = 0, i = intid; i < (uint64_t)intid + num; i++, f++) - close(fd[f]); -} - -/* handles the valid case: intid=0xffffffff num=1 */ -#define for_each_intid(first, num, tmp, i) \ - for ((tmp) = (i) = (first); \ - (tmp) < (uint64_t)(first) + (uint64_t)(num); \ - (tmp)++, (i)++) - -static void run_guest_cmd(struct kvm_vcpu *vcpu, int gic_fd, - struct kvm_inject_args *inject_args, - struct test_args *test_args) -{ - kvm_inject_cmd cmd = inject_args->cmd; - uint32_t intid = inject_args->first_intid; - uint32_t num = inject_args->num; - int level = inject_args->level; - bool expect_failure = inject_args->expect_failure; - struct kvm_vm *vm = vcpu->vm; - uint64_t tmp; - uint32_t i; - - /* handles the valid case: intid=0xffffffff num=1 */ - assert(intid < UINT_MAX - num || num == 1); - - switch (cmd) { - case KVM_INJECT_EDGE_IRQ_LINE: - for_each_intid(intid, num, tmp, i) - kvm_irq_line_check(vm, i, 1, test_args, - expect_failure); - for_each_intid(intid, num, tmp, i) - kvm_irq_line_check(vm, i, 0, test_args, - expect_failure); - break; - case KVM_SET_IRQ_LINE: - for_each_intid(intid, num, tmp, i) - kvm_irq_line_check(vm, i, level, test_args, - expect_failure); - break; - case KVM_SET_IRQ_LINE_HIGH: - for_each_intid(intid, num, tmp, i) - kvm_irq_line_check(vm, i, 1, test_args, - expect_failure); - break; - case KVM_SET_LEVEL_INFO_HIGH: - for_each_intid(intid, num, tmp, i) - kvm_irq_set_level_info_check(gic_fd, i, 1, - expect_failure); - break; - case KVM_INJECT_IRQFD: - kvm_routing_and_irqfd_check(vm, intid, num, - test_args->kvm_max_routes, - expect_failure); - break; - case KVM_WRITE_ISPENDR: - for (i = intid; i < intid + num; i++) - kvm_irq_write_ispendr_check(gic_fd, i, vcpu, - expect_failure); - break; - case KVM_WRITE_ISACTIVER: - for (i = intid; i < intid + num; i++) - kvm_irq_write_isactiver(gic_fd, i, vcpu); - break; - default: - break; - } -} - -static void kvm_inject_get_call(struct kvm_vm *vm, struct ucall *uc, - struct kvm_inject_args *args) -{ - struct kvm_inject_args *kvm_args_hva; - vm_vaddr_t kvm_args_gva; - - kvm_args_gva = uc->args[1]; - kvm_args_hva = (struct kvm_inject_args *)addr_gva2hva(vm, kvm_args_gva); - memcpy(args, kvm_args_hva, sizeof(struct kvm_inject_args)); -} - -static void print_args(struct test_args *args) -{ - printf("nr-irqs=%d level-sensitive=%d eoi-split=%d\n", - args->nr_irqs, args->level_sensitive, - args->eoi_split); -} - -static void test_vgic(uint32_t nr_irqs, bool level_sensitive, bool eoi_split) -{ - struct ucall uc; - int gic_fd; - struct kvm_vcpu *vcpu; - struct kvm_vm *vm; - struct kvm_inject_args inject_args; - vm_vaddr_t args_gva; - - struct test_args args = { - .nr_irqs = nr_irqs, - .level_sensitive = level_sensitive, - .eoi_split = eoi_split, - .kvm_max_routes = kvm_check_cap(KVM_CAP_IRQ_ROUTING), - .kvm_supports_irqfd = kvm_check_cap(KVM_CAP_IRQFD), - }; - - print_args(&args); - - vm = vm_create_with_one_vcpu(&vcpu, guest_code); - - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(vcpu); - - /* Setup the guest args page (so it gets the args). */ - args_gva = vm_vaddr_alloc_page(vm); - memcpy(addr_gva2hva(vm, args_gva), &args, sizeof(args)); - vcpu_args_set(vcpu, 1, args_gva); - - gic_fd = vgic_v3_setup(vm, 1, nr_irqs); - __TEST_REQUIRE(gic_fd >= 0, "Failed to create vgic-v3, skipping"); - - vm_install_exception_handler(vm, VECTOR_IRQ_CURRENT, - guest_irq_handlers[args.eoi_split][args.level_sensitive]); - - while (1) { - vcpu_run(vcpu); - - switch (get_ucall(vcpu, &uc)) { - case UCALL_SYNC: - kvm_inject_get_call(vm, &uc, &inject_args); - run_guest_cmd(vcpu, gic_fd, &inject_args, &args); - break; - case UCALL_ABORT: - REPORT_GUEST_ASSERT(uc); - break; - case UCALL_DONE: - goto done; - default: - TEST_FAIL("Unknown ucall %lu", uc.cmd); - } - } - -done: - close(gic_fd); - kvm_vm_free(vm); -} - -static void help(const char *name) -{ - printf( - "\n" - "usage: %s [-n num_irqs] [-e eoi_split] [-l level_sensitive]\n", name); - printf(" -n: specify number of IRQs to setup the vgic with. " - "It has to be a multiple of 32 and between 64 and 1024.\n"); - printf(" -e: if 1 then EOI is split into a write to DIR on top " - "of writing EOI.\n"); - printf(" -l: specify whether the IRQs are level-sensitive (1) or not (0)."); - puts(""); - exit(1); -} - -int main(int argc, char **argv) -{ - uint32_t nr_irqs = 64; - bool default_args = true; - bool level_sensitive = false; - int opt; - bool eoi_split = false; - - while ((opt = getopt(argc, argv, "hn:e:l:")) != -1) { - switch (opt) { - case 'n': - nr_irqs = atoi_non_negative("Number of IRQs", optarg); - if (nr_irqs > 1024 || nr_irqs % 32) - help(argv[0]); - break; - case 'e': - eoi_split = (bool)atoi_paranoid(optarg); - default_args = false; - break; - case 'l': - level_sensitive = (bool)atoi_paranoid(optarg); - default_args = false; - break; - case 'h': - default: - help(argv[0]); - break; - } - } - - /* - * If the user just specified nr_irqs and/or gic_version, then run all - * combinations. - */ - if (default_args) { - test_vgic(nr_irqs, false /* level */, false /* eoi_split */); - test_vgic(nr_irqs, false /* level */, true /* eoi_split */); - test_vgic(nr_irqs, true /* level */, false /* eoi_split */); - test_vgic(nr_irqs, true /* level */, true /* eoi_split */); - } else { - test_vgic(nr_irqs, level_sensitive, eoi_split); - } - - return 0; -} |