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-rw-r--r--hw/intc/xics.c345
1 files changed, 233 insertions, 112 deletions
diff --git a/hw/intc/xics.c b/hw/intc/xics.c
index 091912e2ca..6b3c071588 100644
--- a/hw/intc/xics.c
+++ b/hw/intc/xics.c
@@ -34,34 +34,19 @@
* ICP: Presentation layer
*/
-struct icp_server_state {
- uint32_t xirr;
- uint8_t pending_priority;
- uint8_t mfrr;
- qemu_irq output;
-};
-
#define XISR_MASK 0x00ffffff
#define CPPR_MASK 0xff000000
#define XISR(ss) (((ss)->xirr) & XISR_MASK)
#define CPPR(ss) (((ss)->xirr) >> 24)
-struct ics_state;
-
-struct icp_state {
- long nr_servers;
- struct icp_server_state *ss;
- struct ics_state *ics;
-};
-
-static void ics_reject(struct ics_state *ics, int nr);
-static void ics_resend(struct ics_state *ics);
-static void ics_eoi(struct ics_state *ics, int nr);
+static void ics_reject(ICSState *ics, int nr);
+static void ics_resend(ICSState *ics);
+static void ics_eoi(ICSState *ics, int nr);
-static void icp_check_ipi(struct icp_state *icp, int server)
+static void icp_check_ipi(XICSState *icp, int server)
{
- struct icp_server_state *ss = icp->ss + server;
+ ICPState *ss = icp->ss + server;
if (XISR(ss) && (ss->pending_priority <= ss->mfrr)) {
return;
@@ -78,9 +63,9 @@ static void icp_check_ipi(struct icp_state *icp, int server)
qemu_irq_raise(ss->output);
}
-static void icp_resend(struct icp_state *icp, int server)
+static void icp_resend(XICSState *icp, int server)
{
- struct icp_server_state *ss = icp->ss + server;
+ ICPState *ss = icp->ss + server;
if (ss->mfrr < CPPR(ss)) {
icp_check_ipi(icp, server);
@@ -88,9 +73,9 @@ static void icp_resend(struct icp_state *icp, int server)
ics_resend(icp->ics);
}
-static void icp_set_cppr(struct icp_state *icp, int server, uint8_t cppr)
+static void icp_set_cppr(XICSState *icp, int server, uint8_t cppr)
{
- struct icp_server_state *ss = icp->ss + server;
+ ICPState *ss = icp->ss + server;
uint8_t old_cppr;
uint32_t old_xisr;
@@ -112,9 +97,9 @@ static void icp_set_cppr(struct icp_state *icp, int server, uint8_t cppr)
}
}
-static void icp_set_mfrr(struct icp_state *icp, int server, uint8_t mfrr)
+static void icp_set_mfrr(XICSState *icp, int server, uint8_t mfrr)
{
- struct icp_server_state *ss = icp->ss + server;
+ ICPState *ss = icp->ss + server;
ss->mfrr = mfrr;
if (mfrr < CPPR(ss)) {
@@ -122,7 +107,7 @@ static void icp_set_mfrr(struct icp_state *icp, int server, uint8_t mfrr)
}
}
-static uint32_t icp_accept(struct icp_server_state *ss)
+static uint32_t icp_accept(ICPState *ss)
{
uint32_t xirr = ss->xirr;
@@ -135,9 +120,9 @@ static uint32_t icp_accept(struct icp_server_state *ss)
return xirr;
}
-static void icp_eoi(struct icp_state *icp, int server, uint32_t xirr)
+static void icp_eoi(XICSState *icp, int server, uint32_t xirr)
{
- struct icp_server_state *ss = icp->ss + server;
+ ICPState *ss = icp->ss + server;
/* Send EOI -> ICS */
ss->xirr = (ss->xirr & ~CPPR_MASK) | (xirr & CPPR_MASK);
@@ -148,9 +133,9 @@ static void icp_eoi(struct icp_state *icp, int server, uint32_t xirr)
}
}
-static void icp_irq(struct icp_state *icp, int server, int nr, uint8_t priority)
+static void icp_irq(XICSState *icp, int server, int nr, uint8_t priority)
{
- struct icp_server_state *ss = icp->ss + server;
+ ICPState *ss = icp->ss + server;
trace_xics_icp_irq(server, nr, priority);
@@ -168,39 +153,59 @@ static void icp_irq(struct icp_state *icp, int server, int nr, uint8_t priority)
}
}
-/*
- * ICS: Source layer
- */
-
-struct ics_irq_state {
- int server;
- uint8_t priority;
- uint8_t saved_priority;
-#define XICS_STATUS_ASSERTED 0x1
-#define XICS_STATUS_SENT 0x2
-#define XICS_STATUS_REJECTED 0x4
-#define XICS_STATUS_MASKED_PENDING 0x8
- uint8_t status;
+static const VMStateDescription vmstate_icp_server = {
+ .name = "icp/server",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .minimum_version_id_old = 1,
+ .fields = (VMStateField []) {
+ /* Sanity check */
+ VMSTATE_UINT32(xirr, ICPState),
+ VMSTATE_UINT8(pending_priority, ICPState),
+ VMSTATE_UINT8(mfrr, ICPState),
+ VMSTATE_END_OF_LIST()
+ },
};
-struct ics_state {
- int nr_irqs;
- int offset;
- qemu_irq *qirqs;
- bool *islsi;
- struct ics_irq_state *irqs;
- struct icp_state *icp;
+static void icp_reset(DeviceState *dev)
+{
+ ICPState *icp = ICP(dev);
+
+ icp->xirr = 0;
+ icp->pending_priority = 0xff;
+ icp->mfrr = 0xff;
+
+ /* Make all outputs are deasserted */
+ qemu_set_irq(icp->output, 0);
+}
+
+static void icp_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+
+ dc->reset = icp_reset;
+ dc->vmsd = &vmstate_icp_server;
+}
+
+static TypeInfo icp_info = {
+ .name = TYPE_ICP,
+ .parent = TYPE_DEVICE,
+ .instance_size = sizeof(ICPState),
+ .class_init = icp_class_init,
};
-static int ics_valid_irq(struct ics_state *ics, uint32_t nr)
+/*
+ * ICS: Source layer
+ */
+static int ics_valid_irq(ICSState *ics, uint32_t nr)
{
return (nr >= ics->offset)
&& (nr < (ics->offset + ics->nr_irqs));
}
-static void resend_msi(struct ics_state *ics, int srcno)
+static void resend_msi(ICSState *ics, int srcno)
{
- struct ics_irq_state *irq = ics->irqs + srcno;
+ ICSIRQState *irq = ics->irqs + srcno;
/* FIXME: filter by server#? */
if (irq->status & XICS_STATUS_REJECTED) {
@@ -212,9 +217,9 @@ static void resend_msi(struct ics_state *ics, int srcno)
}
}
-static void resend_lsi(struct ics_state *ics, int srcno)
+static void resend_lsi(ICSState *ics, int srcno)
{
- struct ics_irq_state *irq = ics->irqs + srcno;
+ ICSIRQState *irq = ics->irqs + srcno;
if ((irq->priority != 0xff)
&& (irq->status & XICS_STATUS_ASSERTED)
@@ -224,9 +229,9 @@ static void resend_lsi(struct ics_state *ics, int srcno)
}
}
-static void set_irq_msi(struct ics_state *ics, int srcno, int val)
+static void set_irq_msi(ICSState *ics, int srcno, int val)
{
- struct ics_irq_state *irq = ics->irqs + srcno;
+ ICSIRQState *irq = ics->irqs + srcno;
trace_xics_set_irq_msi(srcno, srcno + ics->offset);
@@ -240,9 +245,9 @@ static void set_irq_msi(struct ics_state *ics, int srcno, int val)
}
}
-static void set_irq_lsi(struct ics_state *ics, int srcno, int val)
+static void set_irq_lsi(ICSState *ics, int srcno, int val)
{
- struct ics_irq_state *irq = ics->irqs + srcno;
+ ICSIRQState *irq = ics->irqs + srcno;
trace_xics_set_irq_lsi(srcno, srcno + ics->offset);
if (val) {
@@ -255,7 +260,7 @@ static void set_irq_lsi(struct ics_state *ics, int srcno, int val)
static void ics_set_irq(void *opaque, int srcno, int val)
{
- struct ics_state *ics = (struct ics_state *)opaque;
+ ICSState *ics = (ICSState *)opaque;
if (ics->islsi[srcno]) {
set_irq_lsi(ics, srcno, val);
@@ -264,9 +269,9 @@ static void ics_set_irq(void *opaque, int srcno, int val)
}
}
-static void write_xive_msi(struct ics_state *ics, int srcno)
+static void write_xive_msi(ICSState *ics, int srcno)
{
- struct ics_irq_state *irq = ics->irqs + srcno;
+ ICSIRQState *irq = ics->irqs + srcno;
if (!(irq->status & XICS_STATUS_MASKED_PENDING)
|| (irq->priority == 0xff)) {
@@ -277,16 +282,16 @@ static void write_xive_msi(struct ics_state *ics, int srcno)
icp_irq(ics->icp, irq->server, srcno + ics->offset, irq->priority);
}
-static void write_xive_lsi(struct ics_state *ics, int srcno)
+static void write_xive_lsi(ICSState *ics, int srcno)
{
resend_lsi(ics, srcno);
}
-static void ics_write_xive(struct ics_state *ics, int nr, int server,
+static void ics_write_xive(ICSState *ics, int nr, int server,
uint8_t priority, uint8_t saved_priority)
{
int srcno = nr - ics->offset;
- struct ics_irq_state *irq = ics->irqs + srcno;
+ ICSIRQState *irq = ics->irqs + srcno;
irq->server = server;
irq->priority = priority;
@@ -301,16 +306,16 @@ static void ics_write_xive(struct ics_state *ics, int nr, int server,
}
}
-static void ics_reject(struct ics_state *ics, int nr)
+static void ics_reject(ICSState *ics, int nr)
{
- struct ics_irq_state *irq = ics->irqs + nr - ics->offset;
+ ICSIRQState *irq = ics->irqs + nr - ics->offset;
trace_xics_ics_reject(nr, nr - ics->offset);
irq->status |= XICS_STATUS_REJECTED; /* Irrelevant but harmless for LSI */
irq->status &= ~XICS_STATUS_SENT; /* Irrelevant but harmless for MSI */
}
-static void ics_resend(struct ics_state *ics)
+static void ics_resend(ICSState *ics)
{
int i;
@@ -324,10 +329,10 @@ static void ics_resend(struct ics_state *ics)
}
}
-static void ics_eoi(struct ics_state *ics, int nr)
+static void ics_eoi(ICSState *ics, int nr)
{
int srcno = nr - ics->offset;
- struct ics_irq_state *irq = ics->irqs + srcno;
+ ICSIRQState *irq = ics->irqs + srcno;
trace_xics_ics_eoi(nr);
@@ -336,11 +341,92 @@ static void ics_eoi(struct ics_state *ics, int nr)
}
}
+static void ics_reset(DeviceState *dev)
+{
+ ICSState *ics = ICS(dev);
+ int i;
+
+ memset(ics->irqs, 0, sizeof(ICSIRQState) * ics->nr_irqs);
+ for (i = 0; i < ics->nr_irqs; i++) {
+ ics->irqs[i].priority = 0xff;
+ ics->irqs[i].saved_priority = 0xff;
+ }
+}
+
+static int ics_post_load(void *opaque, int version_id)
+{
+ int i;
+ ICSState *ics = opaque;
+
+ for (i = 0; i < ics->icp->nr_servers; i++) {
+ icp_resend(ics->icp, i);
+ }
+
+ return 0;
+}
+
+static const VMStateDescription vmstate_ics_irq = {
+ .name = "ics/irq",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .minimum_version_id_old = 1,
+ .fields = (VMStateField []) {
+ VMSTATE_UINT32(server, ICSIRQState),
+ VMSTATE_UINT8(priority, ICSIRQState),
+ VMSTATE_UINT8(saved_priority, ICSIRQState),
+ VMSTATE_UINT8(status, ICSIRQState),
+ VMSTATE_END_OF_LIST()
+ },
+};
+
+static const VMStateDescription vmstate_ics = {
+ .name = "ics",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .minimum_version_id_old = 1,
+ .post_load = ics_post_load,
+ .fields = (VMStateField []) {
+ /* Sanity check */
+ VMSTATE_UINT32_EQUAL(nr_irqs, ICSState),
+
+ VMSTATE_STRUCT_VARRAY_POINTER_UINT32(irqs, ICSState, nr_irqs,
+ vmstate_ics_irq, ICSIRQState),
+ VMSTATE_END_OF_LIST()
+ },
+};
+
+static int ics_realize(DeviceState *dev)
+{
+ ICSState *ics = ICS(dev);
+
+ ics->irqs = g_malloc0(ics->nr_irqs * sizeof(ICSIRQState));
+ ics->islsi = g_malloc0(ics->nr_irqs * sizeof(bool));
+ ics->qirqs = qemu_allocate_irqs(ics_set_irq, ics, ics->nr_irqs);
+
+ return 0;
+}
+
+static void ics_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+
+ dc->init = ics_realize;
+ dc->vmsd = &vmstate_ics;
+ dc->reset = ics_reset;
+}
+
+static TypeInfo ics_info = {
+ .name = TYPE_ICS,
+ .parent = TYPE_DEVICE,
+ .instance_size = sizeof(ICSState),
+ .class_init = ics_class_init,
+};
+
/*
* Exported functions
*/
-qemu_irq xics_get_qirq(struct icp_state *icp, int irq)
+qemu_irq xics_get_qirq(XICSState *icp, int irq)
{
if (!ics_valid_irq(icp->ics, irq)) {
return NULL;
@@ -349,13 +435,17 @@ qemu_irq xics_get_qirq(struct icp_state *icp, int irq)
return icp->ics->qirqs[irq - icp->ics->offset];
}
-void xics_set_irq_type(struct icp_state *icp, int irq, bool lsi)
+void xics_set_irq_type(XICSState *icp, int irq, bool lsi)
{
assert(ics_valid_irq(icp->ics, irq));
icp->ics->islsi[irq - icp->ics->offset] = lsi;
}
+/*
+ * Guest interfaces
+ */
+
static target_ulong h_cppr(PowerPCCPU *cpu, sPAPREnvironment *spapr,
target_ulong opcode, target_ulong *args)
{
@@ -405,7 +495,7 @@ static void rtas_set_xive(PowerPCCPU *cpu, sPAPREnvironment *spapr,
uint32_t nargs, target_ulong args,
uint32_t nret, target_ulong rets)
{
- struct ics_state *ics = spapr->icp->ics;
+ ICSState *ics = spapr->icp->ics;
uint32_t nr, server, priority;
if ((nargs != 3) || (nret != 1)) {
@@ -433,7 +523,7 @@ static void rtas_get_xive(PowerPCCPU *cpu, sPAPREnvironment *spapr,
uint32_t nargs, target_ulong args,
uint32_t nret, target_ulong rets)
{
- struct ics_state *ics = spapr->icp->ics;
+ ICSState *ics = spapr->icp->ics;
uint32_t nr;
if ((nargs != 1) || (nret != 3)) {
@@ -458,7 +548,7 @@ static void rtas_int_off(PowerPCCPU *cpu, sPAPREnvironment *spapr,
uint32_t nargs, target_ulong args,
uint32_t nret, target_ulong rets)
{
- struct ics_state *ics = spapr->icp->ics;
+ ICSState *ics = spapr->icp->ics;
uint32_t nr;
if ((nargs != 1) || (nret != 1)) {
@@ -484,7 +574,7 @@ static void rtas_int_on(PowerPCCPU *cpu, sPAPREnvironment *spapr,
uint32_t nargs, target_ulong args,
uint32_t nret, target_ulong rets)
{
- struct ics_state *ics = spapr->icp->ics;
+ ICSState *ics = spapr->icp->ics;
uint32_t nr;
if ((nargs != 1) || (nret != 1)) {
@@ -506,32 +596,27 @@ static void rtas_int_on(PowerPCCPU *cpu, sPAPREnvironment *spapr,
rtas_st(rets, 0, 0); /* Success */
}
-static void xics_reset(void *opaque)
+/*
+ * XICS
+ */
+
+static void xics_reset(DeviceState *d)
{
- struct icp_state *icp = (struct icp_state *)opaque;
- struct ics_state *ics = icp->ics;
+ XICSState *icp = XICS(d);
int i;
for (i = 0; i < icp->nr_servers; i++) {
- icp->ss[i].xirr = 0;
- icp->ss[i].pending_priority = 0xff;
- icp->ss[i].mfrr = 0xff;
- /* Make all outputs are deasserted */
- qemu_set_irq(icp->ss[i].output, 0);
+ device_reset(DEVICE(&icp->ss[i]));
}
- memset(ics->irqs, 0, sizeof(struct ics_irq_state) * ics->nr_irqs);
- for (i = 0; i < ics->nr_irqs; i++) {
- ics->irqs[i].priority = 0xff;
- ics->irqs[i].saved_priority = 0xff;
- }
+ device_reset(DEVICE(icp->ics));
}
-void xics_cpu_setup(struct icp_state *icp, PowerPCCPU *cpu)
+void xics_cpu_setup(XICSState *icp, PowerPCCPU *cpu)
{
CPUState *cs = CPU(cpu);
CPUPPCState *env = &cpu->env;
- struct icp_server_state *ss = &icp->ss[cs->cpu_index];
+ ICPState *ss = &icp->ss[cs->cpu_index];
assert(cs->cpu_index < icp->nr_servers);
@@ -551,37 +636,73 @@ void xics_cpu_setup(struct icp_state *icp, PowerPCCPU *cpu)
}
}
-struct icp_state *xics_system_init(int nr_servers, int nr_irqs)
+static void xics_realize(DeviceState *dev, Error **errp)
{
- struct icp_state *icp;
- struct ics_state *ics;
-
- icp = g_malloc0(sizeof(*icp));
- icp->nr_servers = nr_servers;
- icp->ss = g_malloc0(icp->nr_servers*sizeof(struct icp_server_state));
+ XICSState *icp = XICS(dev);
+ ICSState *ics = icp->ics;
+ int i;
- ics = g_malloc0(sizeof(*ics));
- ics->nr_irqs = nr_irqs;
+ ics->nr_irqs = icp->nr_irqs;
ics->offset = XICS_IRQ_BASE;
- ics->irqs = g_malloc0(nr_irqs * sizeof(struct ics_irq_state));
- ics->islsi = g_malloc0(nr_irqs * sizeof(bool));
-
- icp->ics = ics;
ics->icp = icp;
+ qdev_init_nofail(DEVICE(ics));
- ics->qirqs = qemu_allocate_irqs(ics_set_irq, ics, nr_irqs);
+ icp->ss = g_malloc0(icp->nr_servers*sizeof(ICPState));
+ for (i = 0; i < icp->nr_servers; i++) {
+ char buffer[32];
+ object_initialize(&icp->ss[i], TYPE_ICP);
+ snprintf(buffer, sizeof(buffer), "icp[%d]", i);
+ object_property_add_child(OBJECT(icp), buffer, OBJECT(&icp->ss[i]), NULL);
+ qdev_init_nofail(DEVICE(&icp->ss[i]));
+ }
+}
- spapr_register_hypercall(H_CPPR, h_cppr);
- spapr_register_hypercall(H_IPI, h_ipi);
- spapr_register_hypercall(H_XIRR, h_xirr);
- spapr_register_hypercall(H_EOI, h_eoi);
+static void xics_initfn(Object *obj)
+{
+ XICSState *xics = XICS(obj);
+
+ xics->ics = ICS(object_new(TYPE_ICS));
+ object_property_add_child(obj, "ics", OBJECT(xics->ics), NULL);
+}
+
+static Property xics_properties[] = {
+ DEFINE_PROP_UINT32("nr_servers", XICSState, nr_servers, -1),
+ DEFINE_PROP_UINT32("nr_irqs", XICSState, nr_irqs, -1),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static void xics_class_init(ObjectClass *oc, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(oc);
+
+ dc->realize = xics_realize;
+ dc->props = xics_properties;
+ dc->reset = xics_reset;
spapr_rtas_register("ibm,set-xive", rtas_set_xive);
spapr_rtas_register("ibm,get-xive", rtas_get_xive);
spapr_rtas_register("ibm,int-off", rtas_int_off);
spapr_rtas_register("ibm,int-on", rtas_int_on);
- qemu_register_reset(xics_reset, icp);
+ spapr_register_hypercall(H_CPPR, h_cppr);
+ spapr_register_hypercall(H_IPI, h_ipi);
+ spapr_register_hypercall(H_XIRR, h_xirr);
+ spapr_register_hypercall(H_EOI, h_eoi);
+}
+
+static const TypeInfo xics_info = {
+ .name = TYPE_XICS,
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(XICSState),
+ .class_init = xics_class_init,
+ .instance_init = xics_initfn,
+};
- return icp;
+static void xics_register_types(void)
+{
+ type_register_static(&xics_info);
+ type_register_static(&ics_info);
+ type_register_static(&icp_info);
}
+
+type_init(xics_register_types)
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-12 20:49:33 +0000