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-rw-r--r--hw/intc/riscv_aclint.c11
-rw-r--r--hw/intc/riscv_aplic.c52
-rw-r--r--hw/intc/riscv_imsic.c25
3 files changed, 63 insertions, 25 deletions
diff --git a/hw/intc/riscv_aclint.c b/hw/intc/riscv_aclint.c
index b466a6a..25cf7a5 100644
--- a/hw/intc/riscv_aclint.c
+++ b/hw/intc/riscv_aclint.c
@@ -64,13 +64,13 @@ static void riscv_aclint_mtimer_write_timecmp(RISCVAclintMTimerState *mtimer,
uint64_t next;
uint64_t diff;
- uint64_t rtc_r = cpu_riscv_read_rtc(mtimer);
+ uint64_t rtc = cpu_riscv_read_rtc(mtimer);
/* Compute the relative hartid w.r.t the socket */
hartid = hartid - mtimer->hartid_base;
mtimer->timecmp[hartid] = value;
- if (mtimer->timecmp[hartid] <= rtc_r) {
+ if (mtimer->timecmp[hartid] <= rtc) {
/*
* If we're setting an MTIMECMP value in the "past",
* immediately raise the timer interrupt
@@ -81,7 +81,7 @@ static void riscv_aclint_mtimer_write_timecmp(RISCVAclintMTimerState *mtimer,
/* otherwise, set up the future timer interrupt */
qemu_irq_lower(mtimer->timer_irqs[hartid]);
- diff = mtimer->timecmp[hartid] - rtc_r;
+ diff = mtimer->timecmp[hartid] - rtc;
/* back to ns (note args switched in muldiv64) */
uint64_t ns_diff = muldiv64(diff, NANOSECONDS_PER_SECOND, timebase_freq);
@@ -208,11 +208,12 @@ static void riscv_aclint_mtimer_write(void *opaque, hwaddr addr,
return;
} else if (addr == mtimer->time_base || addr == mtimer->time_base + 4) {
uint64_t rtc_r = cpu_riscv_read_rtc_raw(mtimer->timebase_freq);
+ uint64_t rtc = cpu_riscv_read_rtc(mtimer);
if (addr == mtimer->time_base) {
if (size == 4) {
/* time_lo for RV32/RV64 */
- mtimer->time_delta = ((rtc_r & ~0xFFFFFFFFULL) | value) - rtc_r;
+ mtimer->time_delta = ((rtc & ~0xFFFFFFFFULL) | value) - rtc_r;
} else {
/* time for RV64 */
mtimer->time_delta = value - rtc_r;
@@ -220,7 +221,7 @@ static void riscv_aclint_mtimer_write(void *opaque, hwaddr addr,
} else {
if (size == 4) {
/* time_hi for RV32/RV64 */
- mtimer->time_delta = (value << 32 | (rtc_r & 0xFFFFFFFF)) - rtc_r;
+ mtimer->time_delta = (value << 32 | (rtc & 0xFFFFFFFF)) - rtc_r;
} else {
qemu_log_mask(LOG_GUEST_ERROR,
"aclint-mtimer: invalid time_hi write: %08x",
diff --git a/hw/intc/riscv_aplic.c b/hw/intc/riscv_aplic.c
index 4bdc6a5..99aae8c 100644
--- a/hw/intc/riscv_aplic.c
+++ b/hw/intc/riscv_aplic.c
@@ -31,6 +31,8 @@
#include "hw/irq.h"
#include "target/riscv/cpu.h"
#include "sysemu/sysemu.h"
+#include "sysemu/kvm.h"
+#include "kvm_riscv.h"
#include "migration/vmstate.h"
#define APLIC_MAX_IDC (1UL << 14)
@@ -148,6 +150,15 @@
#define APLIC_IDC_CLAIMI 0x1c
+/*
+ * KVM AIA only supports APLIC MSI, fallback to QEMU emulation if we want to use
+ * APLIC Wired.
+ */
+static bool is_kvm_aia(bool msimode)
+{
+ return kvm_irqchip_in_kernel() && msimode;
+}
+
static uint32_t riscv_aplic_read_input_word(RISCVAPLICState *aplic,
uint32_t word)
{
@@ -801,29 +812,35 @@ static void riscv_aplic_realize(DeviceState *dev, Error **errp)
uint32_t i;
RISCVAPLICState *aplic = RISCV_APLIC(dev);
- aplic->bitfield_words = (aplic->num_irqs + 31) >> 5;
- aplic->sourcecfg = g_new0(uint32_t, aplic->num_irqs);
- aplic->state = g_new0(uint32_t, aplic->num_irqs);
- aplic->target = g_new0(uint32_t, aplic->num_irqs);
- if (!aplic->msimode) {
- for (i = 0; i < aplic->num_irqs; i++) {
- aplic->target[i] = 1;
+ if (!is_kvm_aia(aplic->msimode)) {
+ aplic->bitfield_words = (aplic->num_irqs + 31) >> 5;
+ aplic->sourcecfg = g_new0(uint32_t, aplic->num_irqs);
+ aplic->state = g_new0(uint32_t, aplic->num_irqs);
+ aplic->target = g_new0(uint32_t, aplic->num_irqs);
+ if (!aplic->msimode) {
+ for (i = 0; i < aplic->num_irqs; i++) {
+ aplic->target[i] = 1;
+ }
}
- }
- aplic->idelivery = g_new0(uint32_t, aplic->num_harts);
- aplic->iforce = g_new0(uint32_t, aplic->num_harts);
- aplic->ithreshold = g_new0(uint32_t, aplic->num_harts);
+ aplic->idelivery = g_new0(uint32_t, aplic->num_harts);
+ aplic->iforce = g_new0(uint32_t, aplic->num_harts);
+ aplic->ithreshold = g_new0(uint32_t, aplic->num_harts);
- memory_region_init_io(&aplic->mmio, OBJECT(dev), &riscv_aplic_ops, aplic,
- TYPE_RISCV_APLIC, aplic->aperture_size);
- sysbus_init_mmio(SYS_BUS_DEVICE(dev), &aplic->mmio);
+ memory_region_init_io(&aplic->mmio, OBJECT(dev), &riscv_aplic_ops,
+ aplic, TYPE_RISCV_APLIC, aplic->aperture_size);
+ sysbus_init_mmio(SYS_BUS_DEVICE(dev), &aplic->mmio);
+ }
/*
* Only root APLICs have hardware IRQ lines. All non-root APLICs
* have IRQ lines delegated by their parent APLIC.
*/
if (!aplic->parent) {
- qdev_init_gpio_in(dev, riscv_aplic_request, aplic->num_irqs);
+ if (kvm_enabled() && is_kvm_aia(aplic->msimode)) {
+ qdev_init_gpio_in(dev, riscv_kvm_aplic_request, aplic->num_irqs);
+ } else {
+ qdev_init_gpio_in(dev, riscv_aplic_request, aplic->num_irqs);
+ }
}
/* Create output IRQ lines for non-MSI mode */
@@ -958,7 +975,10 @@ DeviceState *riscv_aplic_create(hwaddr addr, hwaddr size,
qdev_prop_set_bit(dev, "mmode", mmode);
sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
- sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, addr);
+
+ if (!is_kvm_aia(msimode)) {
+ sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, addr);
+ }
if (parent) {
riscv_aplic_add_child(parent, dev);
diff --git a/hw/intc/riscv_imsic.c b/hw/intc/riscv_imsic.c
index fea3385..760dbdd 100644
--- a/hw/intc/riscv_imsic.c
+++ b/hw/intc/riscv_imsic.c
@@ -32,6 +32,7 @@
#include "target/riscv/cpu.h"
#include "target/riscv/cpu_bits.h"
#include "sysemu/sysemu.h"
+#include "sysemu/kvm.h"
#include "migration/vmstate.h"
#define IMSIC_MMIO_PAGE_LE 0x00
@@ -283,6 +284,20 @@ static void riscv_imsic_write(void *opaque, hwaddr addr, uint64_t value,
goto err;
}
+#if defined(CONFIG_KVM)
+ if (kvm_irqchip_in_kernel()) {
+ struct kvm_msi msi;
+
+ msi.address_lo = extract64(imsic->mmio.addr + addr, 0, 32);
+ msi.address_hi = extract64(imsic->mmio.addr + addr, 32, 32);
+ msi.data = le32_to_cpu(value);
+
+ kvm_vm_ioctl(kvm_state, KVM_SIGNAL_MSI, &msi);
+
+ return;
+ }
+#endif
+
/* Writes only supported for MSI little-endian registers */
page = addr >> IMSIC_MMIO_PAGE_SHIFT;
if ((addr & (IMSIC_MMIO_PAGE_SZ - 1)) == IMSIC_MMIO_PAGE_LE) {
@@ -320,10 +335,12 @@ static void riscv_imsic_realize(DeviceState *dev, Error **errp)
CPUState *cpu = cpu_by_arch_id(imsic->hartid);
CPURISCVState *env = cpu ? cpu->env_ptr : NULL;
- imsic->num_eistate = imsic->num_pages * imsic->num_irqs;
- imsic->eidelivery = g_new0(uint32_t, imsic->num_pages);
- imsic->eithreshold = g_new0(uint32_t, imsic->num_pages);
- imsic->eistate = g_new0(uint32_t, imsic->num_eistate);
+ if (!kvm_irqchip_in_kernel()) {
+ imsic->num_eistate = imsic->num_pages * imsic->num_irqs;
+ imsic->eidelivery = g_new0(uint32_t, imsic->num_pages);
+ imsic->eithreshold = g_new0(uint32_t, imsic->num_pages);
+ imsic->eistate = g_new0(uint32_t, imsic->num_eistate);
+ }
memory_region_init_io(&imsic->mmio, OBJECT(dev), &riscv_imsic_ops,
imsic, TYPE_RISCV_IMSIC,
generated by cgit v1.1 at 2025-04-10 01:05:49 +0000