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Index: sys/powerpc/pseries/xics.c
===================================================================
--- sys/powerpc/pseries/xics.c
+++ sys/powerpc/pseries/xics.c
@@ -61,6 +61,9 @@
#define XICP_IPI 2
#define MAX_XICP_IRQS (1<<24) /* 24-bit XIRR field */
+#define XIVE_XICS_MODE_EMU 0
+#define XIVE_XICS_MODE_EXP 1
+
static int xicp_probe(device_t);
static int xicp_attach(device_t);
static int xics_probe(device_t);
@@ -117,6 +120,7 @@
int cpu;
} intvecs[256];
int nintvecs;
+ bool xics_emu;
};
static driver_t xicp_driver = {
@@ -161,7 +165,8 @@
xicp_probe(device_t dev)
{
- if (!ofw_bus_is_compatible(dev, "ibm,ppc-xicp"))
+ if (!ofw_bus_is_compatible(dev, "ibm,ppc-xicp") &&
+ !ofw_bus_is_compatible(dev, "ibm,opal-intc"))
return (ENXIO);
device_set_desc(dev, "External Interrupt Presentation Controller");
@@ -172,7 +177,8 @@
xics_probe(device_t dev)
{
- if (!ofw_bus_is_compatible(dev, "ibm,ppc-xics"))
+ if (!ofw_bus_is_compatible(dev, "ibm,ppc-xics") &&
+ !ofw_bus_is_compatible(dev, "IBM,opal-xics"))
return (ENXIO);
device_set_desc(dev, "External Interrupt Source Controller");
@@ -206,12 +212,20 @@
device_printf(dev, "Handling CPUs %d-%d\n", sc->cpu_range[0],
sc->cpu_range[1]-1);
} else {
+ if (ofw_bus_is_compatible(dev, "ibm,opal-intc")) {
+ /*
+ * For now run POWER9 XIVE interrupt controller in XICS
+ * compatibility mode.
+ */
+ sc->xics_emu = true;
+ opal_call(OPAL_XIVE_RESET, XIVE_XICS_MODE_EMU);
+ }
sc->cpu_range[0] = 0;
sc->cpu_range[1] = mp_ncpus;
}
#ifdef POWERNV
- if (mfmsr() & PSL_HV) {
+ if ((mfmsr() & PSL_HV) && !sc->xics_emu) {
int i;
for (i = 0; i < sc->cpu_range[1] - sc->cpu_range[0]; i++) {
@@ -329,6 +343,10 @@
/* Return value in R4, use the PFT call */
if (regs) {
xirr = bus_read_4(regs, 4);
+#ifdef POWERNV
+ } else if (sc->xics_emu) {
+ opal_call(OPAL_INT_GET_XIRR, vtophys(&xirr), false);
+#endif
} else {
/* Return value in R4, use the PFT call */
phyp_pft_hcall(H_XIRR, 0, 0, 0, 0, &xirr, &junk, &junk);
@@ -338,6 +356,10 @@
if (xirr == 0) { /* No more pending interrupts? */
if (regs)
bus_write_1(regs, 4, 0xff);
+#ifdef POWERNV
+ else if (sc->xics_emu)
+ opal_call(OPAL_INT_SET_CPPR, 0xff);
+#endif
else
phyp_hcall(H_CPPR, (uint64_t)0xff);
break;
@@ -348,6 +370,10 @@
/* Clear IPI */
if (regs)
bus_write_1(regs, 12, 0xff);
+#ifdef POWERNV
+ else if (sc->xics_emu)
+ opal_call(OPAL_INT_SET_MFRR, 0xff);
+#endif
else
phyp_hcall(H_IPI, (uint64_t)(PCPU_GET(hwref)),
0xff);
@@ -409,6 +435,9 @@
static void
xicp_eoi(device_t dev, u_int irq)
{
+#ifdef POWERNV
+ struct xicp_softc *sc;
+#endif
uint64_t xirr;
if (irq == MAX_XICP_IRQS) /* Remap IPI interrupt to internal value */
@@ -416,9 +445,13 @@
xirr = irq | (XICP_PRIORITY << 24);
#ifdef POWERNV
- if (mfmsr() & PSL_HV)
- bus_write_4(xicp_mem_for_cpu(PCPU_GET(hwref)), 4, xirr);
- else
+ if (mfmsr() & PSL_HV) {
+ sc = device_get_softc(dev);
+ if (sc->xics_emu)
+ opal_call(OPAL_INT_EOI, xirr);
+ else
+ bus_write_4(xicp_mem_for_cpu(PCPU_GET(hwref)), 4, xirr);
+ } else
#endif
phyp_hcall(H_EOI, xirr);
}
@@ -428,11 +461,16 @@
{
#ifdef POWERNV
+ struct xicp_softc *sc;
cpu = pcpu_find(cpu)->pc_hwref;
- if (mfmsr() & PSL_HV)
- bus_write_1(xicp_mem_for_cpu(cpu), 12, XICP_PRIORITY);
- else
+ if (mfmsr() & PSL_HV) {
+ sc = device_get_softc(dev);
+ if (sc->xics_emu)
+ opal_call(OPAL_INT_SET_MFRR, cpu, XICP_PRIORITY);
+ else
+ bus_write_1(xicp_mem_for_cpu(cpu), 12, XICP_PRIORITY);
+ } else
#endif
phyp_hcall(H_IPI, (uint64_t)cpu, XICP_PRIORITY);
}

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