@@ -345,6 +345,11 @@ static void arm_gicv3_common_realize(DeviceState *dev, Error **errp)
return;
}
+ if (s->lpi_enable && !s->dma) {
+ error_setg(errp, "Redist-ITS: Guest 'sysmem' reference link not set");
+ return;
+ }
+
s->cpu = g_new0(GICv3CPUState, s->num_cpu);
for (i = 0; i < s->num_cpu; i++) {
@@ -381,6 +386,10 @@ static void arm_gicv3_common_realize(DeviceState *dev, Error **errp)
(1 << 24) |
(i << 8) |
(last << 4);
+
+ if (s->lpi_enable) {
+ s->cpu[i].gicr_typer |= GICR_TYPER_PLPIS;
+ }
}
}
@@ -494,9 +503,12 @@ static Property arm_gicv3_common_properties[] = {
DEFINE_PROP_UINT32("num-cpu", GICv3State, num_cpu, 1),
DEFINE_PROP_UINT32("num-irq", GICv3State, num_irq, 32),
DEFINE_PROP_UINT32("revision", GICv3State, revision, 3),
+ DEFINE_PROP_BOOL("has-lpi", GICv3State, lpi_enable, 0),
DEFINE_PROP_BOOL("has-security-extensions", GICv3State, security_extn, 0),
DEFINE_PROP_ARRAY("redist-region-count", GICv3State, nb_redist_regions,
redist_region_count, qdev_prop_uint32, uint32_t),
+ DEFINE_PROP_LINK("sysmem", GICv3State, dma, TYPE_MEMORY_REGION,
+ MemoryRegion *),
DEFINE_PROP_END_OF_LIST(),
};
@@ -371,7 +371,9 @@ static MemTxResult gicd_readl(GICv3State *s, hwaddr offset,
* A3V == 1 (non-zero values of Affinity level 3 supported)
* IDbits == 0xf (we support 16-bit interrupt identifiers)
* DVIS == 0 (Direct virtual LPI injection not supported)
- * LPIS == 0 (LPIs not supported)
+ * LPIS == 1 (LPIs are supported if affinity routing is enabled)
+ * num_LPIs == 0b00000 (bits [15:11],Number of LPIs as indicated
+ * by GICD_TYPER.IDbits)
* MBIS == 0 (message-based SPIs not supported)
* SecurityExtn == 1 if security extns supported
* CPUNumber == 0 since for us ARE is always 1
@@ -386,6 +388,7 @@ static MemTxResult gicd_readl(GICv3State *s, hwaddr offset,
bool sec_extn = !(s->gicd_ctlr & GICD_CTLR_DS);
*data = (1 << 25) | (1 << 24) | (sec_extn << 10) |
+ (s->lpi_enable << GICD_TYPER_LPIS_OFFSET) |
(0xf << 19) | itlinesnumber;
return MEMTX_OK;
}
@@ -248,10 +248,16 @@ static MemTxResult gicr_writel(GICv3CPUState *cs, hwaddr offset,
case GICR_CTLR:
/* For our implementation, GICR_TYPER.DPGS is 0 and so all
* the DPG bits are RAZ/WI. We don't do anything asynchronously,
- * so UWP and RWP are RAZ/WI. And GICR_TYPER.LPIS is 0 (we don't
- * implement LPIs) so Enable_LPIs is RES0. So there are no writable
- * bits for us.
+ * so UWP and RWP are RAZ/WI. GICR_TYPER.LPIS is 1 (we
+ * implement LPIs) so Enable_LPIs is programmable.
*/
+ if (cs->gicr_typer & GICR_TYPER_PLPIS) {
+ if (value & GICR_CTLR_ENABLE_LPIS) {
+ cs->gicr_ctlr |= GICR_CTLR_ENABLE_LPIS;
+ } else {
+ cs->gicr_ctlr &= ~GICR_CTLR_ENABLE_LPIS;
+ }
+ }
return MEMTX_OK;
case GICR_STATUSR:
/* RAZ/WI for our implementation */
@@ -68,6 +68,9 @@
#define GICD_CTLR_E1NWF (1U << 7)
#define GICD_CTLR_RWP (1U << 31)
+#define GICD_TYPER_LPIS_OFFSET 17
+#define GICD_TYPER_IDBITS_OFFSET 19
+#define GICD_TYPER_IDBITS_MASK 0x1f
/* 16 bits EventId */
#define GICD_TYPER_IDBITS 0xf
@@ -123,6 +126,9 @@
#define GICR_TYPER_COMMONLPIAFF (0x3 << 24)
#define GICR_TYPER_AFFINITYVALUE (0xFFFFFFFFULL << 32)
+#define GICR_WAKER_ProcessorSleep (1U << 1)
+#define GICR_WAKER_ChildrenAsleep (1U << 2)
+
FIELD(GICR_PROPBASER, IDBITS, 0, 5)
FIELD(GICR_PROPBASER, INNERCACHE, 7, 3)
FIELD(GICR_PROPBASER, SHAREABILITY, 10, 2)
@@ -137,9 +143,6 @@ FIELD(GICR_PENDBASER, PHYADDR, 16, 36)
FIELD(GICR_PENDBASER, OUTERCACHE, 56, 3)
FIELD(GICR_PENDBASER, PTZ, 62, 1)
-#define GICR_WAKER_ProcessorSleep (1U << 1)
-#define GICR_WAKER_ChildrenAsleep (1U << 2)
-
#define ICC_CTLR_EL1_CBPR (1U << 0)
#define ICC_CTLR_EL1_EOIMODE (1U << 1)
#define ICC_CTLR_EL1_PMHE (1U << 6)
@@ -221,6 +221,7 @@ struct GICv3State {
uint32_t num_cpu;
uint32_t num_irq;
uint32_t revision;
+ bool lpi_enable;
bool security_extn;
bool irq_reset_nonsecure;
bool gicd_no_migration_shift_bug;
Added properties to enable ITS feature and define qemu system address space memory in gicv3 common,setup distributor and redistributor registers to indicate LPI support. Signed-off-by: Shashi Mallela <shashi.mallela@linaro.org> --- hw/intc/arm_gicv3_common.c | 12 ++++++++++++ hw/intc/arm_gicv3_dist.c | 5 ++++- hw/intc/arm_gicv3_redist.c | 12 +++++++++--- hw/intc/gicv3_internal.h | 9 ++++++--- include/hw/intc/arm_gicv3_common.h | 1 + 5 files changed, 32 insertions(+), 7 deletions(-)