xref: /qemu/hw/intc/xics.c (revision 2cd908d0add803886c310084145fecc93f080a63)
1b5cec4c5SDavid Gibson /*
2b5cec4c5SDavid Gibson  * QEMU PowerPC pSeries Logical Partition (aka sPAPR) hardware System Emulator
3b5cec4c5SDavid Gibson  *
4b5cec4c5SDavid Gibson  * PAPR Virtualized Interrupt System, aka ICS/ICP aka xics
5b5cec4c5SDavid Gibson  *
6b5cec4c5SDavid Gibson  * Copyright (c) 2010,2011 David Gibson, IBM Corporation.
7b5cec4c5SDavid Gibson  *
8b5cec4c5SDavid Gibson  * Permission is hereby granted, free of charge, to any person obtaining a copy
9b5cec4c5SDavid Gibson  * of this software and associated documentation files (the "Software"), to deal
10b5cec4c5SDavid Gibson  * in the Software without restriction, including without limitation the rights
11b5cec4c5SDavid Gibson  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
12b5cec4c5SDavid Gibson  * copies of the Software, and to permit persons to whom the Software is
13b5cec4c5SDavid Gibson  * furnished to do so, subject to the following conditions:
14b5cec4c5SDavid Gibson  *
15b5cec4c5SDavid Gibson  * The above copyright notice and this permission notice shall be included in
16b5cec4c5SDavid Gibson  * all copies or substantial portions of the Software.
17b5cec4c5SDavid Gibson  *
18b5cec4c5SDavid Gibson  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19b5cec4c5SDavid Gibson  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20b5cec4c5SDavid Gibson  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21b5cec4c5SDavid Gibson  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22b5cec4c5SDavid Gibson  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
23b5cec4c5SDavid Gibson  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
24b5cec4c5SDavid Gibson  * THE SOFTWARE.
25b5cec4c5SDavid Gibson  *
26b5cec4c5SDavid Gibson  */
27b5cec4c5SDavid Gibson 
280d75590dSPeter Maydell #include "qemu/osdep.h"
29da34e65cSMarkus Armbruster #include "qapi/error.h"
304771d756SPaolo Bonzini #include "qemu-common.h"
314771d756SPaolo Bonzini #include "cpu.h"
3283c9f4caSPaolo Bonzini #include "hw/hw.h"
33500efa23SDavid Gibson #include "trace.h"
345d87e4b7SBenjamin Herrenschmidt #include "qemu/timer.h"
350d09e41aSPaolo Bonzini #include "hw/ppc/xics.h"
369ccff2a4SAlexey Kardashevskiy #include "qemu/error-report.h"
375a3d7b23SAlexey Kardashevskiy #include "qapi/visitor.h"
38b1fc72f0SBenjamin Herrenschmidt #include "monitor/monitor.h"
39b1fc72f0SBenjamin Herrenschmidt #include "hw/intc/intc.h"
40b5cec4c5SDavid Gibson 
419c7027baSBenjamin Herrenschmidt int xics_get_cpu_index_by_dt_id(int cpu_dt_id)
420f20ba62SAlexey Kardashevskiy {
430f20ba62SAlexey Kardashevskiy     PowerPCCPU *cpu = ppc_get_vcpu_by_dt_id(cpu_dt_id);
440f20ba62SAlexey Kardashevskiy 
450f20ba62SAlexey Kardashevskiy     if (cpu) {
460f20ba62SAlexey Kardashevskiy         return cpu->parent_obj.cpu_index;
470f20ba62SAlexey Kardashevskiy     }
480f20ba62SAlexey Kardashevskiy 
490f20ba62SAlexey Kardashevskiy     return -1;
500f20ba62SAlexey Kardashevskiy }
510f20ba62SAlexey Kardashevskiy 
5227f24582SBenjamin Herrenschmidt void xics_cpu_destroy(XICSState *xics, PowerPCCPU *cpu)
534a4b344cSBharata B Rao {
544a4b344cSBharata B Rao     CPUState *cs = CPU(cpu);
5527f24582SBenjamin Herrenschmidt     ICPState *ss = &xics->ss[cs->cpu_index];
564a4b344cSBharata B Rao 
5727f24582SBenjamin Herrenschmidt     assert(cs->cpu_index < xics->nr_servers);
584a4b344cSBharata B Rao     assert(cs == ss->cs);
594a4b344cSBharata B Rao 
604a4b344cSBharata B Rao     ss->output = NULL;
614a4b344cSBharata B Rao     ss->cs = NULL;
624a4b344cSBharata B Rao }
634a4b344cSBharata B Rao 
6427f24582SBenjamin Herrenschmidt void xics_cpu_setup(XICSState *xics, PowerPCCPU *cpu)
658ffe04edSAlexey Kardashevskiy {
668ffe04edSAlexey Kardashevskiy     CPUState *cs = CPU(cpu);
678ffe04edSAlexey Kardashevskiy     CPUPPCState *env = &cpu->env;
6827f24582SBenjamin Herrenschmidt     ICPState *ss = &xics->ss[cs->cpu_index];
6927f24582SBenjamin Herrenschmidt     XICSStateClass *info = XICS_COMMON_GET_CLASS(xics);
708ffe04edSAlexey Kardashevskiy 
7127f24582SBenjamin Herrenschmidt     assert(cs->cpu_index < xics->nr_servers);
728ffe04edSAlexey Kardashevskiy 
734a4b344cSBharata B Rao     ss->cs = cs;
744a4b344cSBharata B Rao 
755eb92cccSAlexey Kardashevskiy     if (info->cpu_setup) {
7627f24582SBenjamin Herrenschmidt         info->cpu_setup(xics, cpu);
775eb92cccSAlexey Kardashevskiy     }
785eb92cccSAlexey Kardashevskiy 
798ffe04edSAlexey Kardashevskiy     switch (PPC_INPUT(env)) {
808ffe04edSAlexey Kardashevskiy     case PPC_FLAGS_INPUT_POWER7:
818ffe04edSAlexey Kardashevskiy         ss->output = env->irq_inputs[POWER7_INPUT_INT];
828ffe04edSAlexey Kardashevskiy         break;
838ffe04edSAlexey Kardashevskiy 
848ffe04edSAlexey Kardashevskiy     case PPC_FLAGS_INPUT_970:
858ffe04edSAlexey Kardashevskiy         ss->output = env->irq_inputs[PPC970_INPUT_INT];
868ffe04edSAlexey Kardashevskiy         break;
878ffe04edSAlexey Kardashevskiy 
888ffe04edSAlexey Kardashevskiy     default:
899ccff2a4SAlexey Kardashevskiy         error_report("XICS interrupt controller does not support this CPU "
909ccff2a4SAlexey Kardashevskiy                      "bus model");
918ffe04edSAlexey Kardashevskiy         abort();
928ffe04edSAlexey Kardashevskiy     }
938ffe04edSAlexey Kardashevskiy }
948ffe04edSAlexey Kardashevskiy 
95b9038e78SCédric Le Goater static void icp_pic_print_info(InterruptStatsProvider *obj,
96b1fc72f0SBenjamin Herrenschmidt                            Monitor *mon)
97b1fc72f0SBenjamin Herrenschmidt {
98b9038e78SCédric Le Goater     ICPState *icp = ICP(obj);
99b9038e78SCédric Le Goater     int cpu_index = icp->cs ? icp->cs->cpu_index : -1;
100b1fc72f0SBenjamin Herrenschmidt 
101b1fc72f0SBenjamin Herrenschmidt     if (!icp->output) {
102b9038e78SCédric Le Goater         return;
103b1fc72f0SBenjamin Herrenschmidt     }
104b1fc72f0SBenjamin Herrenschmidt     monitor_printf(mon, "CPU %d XIRR=%08x (%p) PP=%02x MFRR=%02x\n",
105b9038e78SCédric Le Goater                    cpu_index, icp->xirr, icp->xirr_owner,
106b1fc72f0SBenjamin Herrenschmidt                    icp->pending_priority, icp->mfrr);
107b1fc72f0SBenjamin Herrenschmidt }
108b1fc72f0SBenjamin Herrenschmidt 
109b9038e78SCédric Le Goater static void ics_simple_pic_print_info(InterruptStatsProvider *obj,
110b9038e78SCédric Le Goater                                       Monitor *mon)
111b9038e78SCédric Le Goater {
112b9038e78SCédric Le Goater     ICSState *ics = ICS_SIMPLE(obj);
113b9038e78SCédric Le Goater     uint32_t i;
114b9038e78SCédric Le Goater 
115b1fc72f0SBenjamin Herrenschmidt     monitor_printf(mon, "ICS %4x..%4x %p\n",
116b1fc72f0SBenjamin Herrenschmidt                    ics->offset, ics->offset + ics->nr_irqs - 1, ics);
117b1fc72f0SBenjamin Herrenschmidt 
118b1fc72f0SBenjamin Herrenschmidt     if (!ics->irqs) {
119b9038e78SCédric Le Goater         return;
120b1fc72f0SBenjamin Herrenschmidt     }
121b1fc72f0SBenjamin Herrenschmidt 
122b1fc72f0SBenjamin Herrenschmidt     for (i = 0; i < ics->nr_irqs; i++) {
123b1fc72f0SBenjamin Herrenschmidt         ICSIRQState *irq = ics->irqs + i;
124b1fc72f0SBenjamin Herrenschmidt 
125b1fc72f0SBenjamin Herrenschmidt         if (!(irq->flags & XICS_FLAGS_IRQ_MASK)) {
126b1fc72f0SBenjamin Herrenschmidt             continue;
127b1fc72f0SBenjamin Herrenschmidt         }
128b1fc72f0SBenjamin Herrenschmidt         monitor_printf(mon, "  %4x %s %02x %02x\n",
129b1fc72f0SBenjamin Herrenschmidt                        ics->offset + i,
130b1fc72f0SBenjamin Herrenschmidt                        (irq->flags & XICS_FLAGS_IRQ_LSI) ?
131b1fc72f0SBenjamin Herrenschmidt                        "LSI" : "MSI",
132b1fc72f0SBenjamin Herrenschmidt                        irq->priority, irq->status);
133b1fc72f0SBenjamin Herrenschmidt     }
134b1fc72f0SBenjamin Herrenschmidt }
135b1fc72f0SBenjamin Herrenschmidt 
1365a3d7b23SAlexey Kardashevskiy /*
1375a3d7b23SAlexey Kardashevskiy  * XICS Common class - parent for emulated XICS and KVM-XICS
1385a3d7b23SAlexey Kardashevskiy  */
1395a3d7b23SAlexey Kardashevskiy static void xics_common_reset(DeviceState *d)
1408ffe04edSAlexey Kardashevskiy {
14127f24582SBenjamin Herrenschmidt     XICSState *xics = XICS_COMMON(d);
142cc706a53SBenjamin Herrenschmidt     ICSState *ics;
1438ffe04edSAlexey Kardashevskiy     int i;
1448ffe04edSAlexey Kardashevskiy 
14527f24582SBenjamin Herrenschmidt     for (i = 0; i < xics->nr_servers; i++) {
14627f24582SBenjamin Herrenschmidt         device_reset(DEVICE(&xics->ss[i]));
1478ffe04edSAlexey Kardashevskiy     }
1488ffe04edSAlexey Kardashevskiy 
149cc706a53SBenjamin Herrenschmidt     QLIST_FOREACH(ics, &xics->ics, list) {
150cc706a53SBenjamin Herrenschmidt         device_reset(DEVICE(ics));
151cc706a53SBenjamin Herrenschmidt     }
1528ffe04edSAlexey Kardashevskiy }
1538ffe04edSAlexey Kardashevskiy 
1545a3d7b23SAlexey Kardashevskiy static void xics_common_initfn(Object *obj)
1555a3d7b23SAlexey Kardashevskiy {
156cc706a53SBenjamin Herrenschmidt     XICSState *xics = XICS_COMMON(obj);
157cc706a53SBenjamin Herrenschmidt 
158cc706a53SBenjamin Herrenschmidt     QLIST_INIT(&xics->ics);
1595a3d7b23SAlexey Kardashevskiy }
1605a3d7b23SAlexey Kardashevskiy 
1615a3d7b23SAlexey Kardashevskiy static void xics_common_class_init(ObjectClass *oc, void *data)
1625a3d7b23SAlexey Kardashevskiy {
1635a3d7b23SAlexey Kardashevskiy     DeviceClass *dc = DEVICE_CLASS(oc);
1645a3d7b23SAlexey Kardashevskiy 
1655a3d7b23SAlexey Kardashevskiy     dc->reset = xics_common_reset;
1665a3d7b23SAlexey Kardashevskiy }
1675a3d7b23SAlexey Kardashevskiy 
1685a3d7b23SAlexey Kardashevskiy static const TypeInfo xics_common_info = {
1695a3d7b23SAlexey Kardashevskiy     .name          = TYPE_XICS_COMMON,
170738d5db8SDavid Gibson     .parent        = TYPE_DEVICE,
1715a3d7b23SAlexey Kardashevskiy     .instance_size = sizeof(XICSState),
1725a3d7b23SAlexey Kardashevskiy     .class_size    = sizeof(XICSStateClass),
1735a3d7b23SAlexey Kardashevskiy     .instance_init = xics_common_initfn,
1745a3d7b23SAlexey Kardashevskiy     .class_init    = xics_common_class_init,
1755a3d7b23SAlexey Kardashevskiy };
1765a3d7b23SAlexey Kardashevskiy 
177b5cec4c5SDavid Gibson /*
178b5cec4c5SDavid Gibson  * ICP: Presentation layer
179b5cec4c5SDavid Gibson  */
180b5cec4c5SDavid Gibson 
181b5cec4c5SDavid Gibson #define XISR_MASK  0x00ffffff
182b5cec4c5SDavid Gibson #define CPPR_MASK  0xff000000
183b5cec4c5SDavid Gibson 
184b5cec4c5SDavid Gibson #define XISR(ss)   (((ss)->xirr) & XISR_MASK)
185b5cec4c5SDavid Gibson #define CPPR(ss)   (((ss)->xirr) >> 24)
186b5cec4c5SDavid Gibson 
187d4d7a59aSBenjamin Herrenschmidt static void ics_reject(ICSState *ics, uint32_t nr)
188d4d7a59aSBenjamin Herrenschmidt {
189d4d7a59aSBenjamin Herrenschmidt     ICSStateClass *k = ICS_BASE_GET_CLASS(ics);
190d4d7a59aSBenjamin Herrenschmidt 
191d4d7a59aSBenjamin Herrenschmidt     if (k->reject) {
192d4d7a59aSBenjamin Herrenschmidt         k->reject(ics, nr);
193d4d7a59aSBenjamin Herrenschmidt     }
194d4d7a59aSBenjamin Herrenschmidt }
195d4d7a59aSBenjamin Herrenschmidt 
1967844e12bSCédric Le Goater void ics_resend(ICSState *ics)
197d4d7a59aSBenjamin Herrenschmidt {
198d4d7a59aSBenjamin Herrenschmidt     ICSStateClass *k = ICS_BASE_GET_CLASS(ics);
199d4d7a59aSBenjamin Herrenschmidt 
200d4d7a59aSBenjamin Herrenschmidt     if (k->resend) {
201d4d7a59aSBenjamin Herrenschmidt         k->resend(ics);
202d4d7a59aSBenjamin Herrenschmidt     }
203d4d7a59aSBenjamin Herrenschmidt }
204d4d7a59aSBenjamin Herrenschmidt 
205d4d7a59aSBenjamin Herrenschmidt static void ics_eoi(ICSState *ics, int nr)
206d4d7a59aSBenjamin Herrenschmidt {
207d4d7a59aSBenjamin Herrenschmidt     ICSStateClass *k = ICS_BASE_GET_CLASS(ics);
208d4d7a59aSBenjamin Herrenschmidt 
209d4d7a59aSBenjamin Herrenschmidt     if (k->eoi) {
210d4d7a59aSBenjamin Herrenschmidt         k->eoi(ics, nr);
211d4d7a59aSBenjamin Herrenschmidt     }
212d4d7a59aSBenjamin Herrenschmidt }
213b5cec4c5SDavid Gibson 
214cc706a53SBenjamin Herrenschmidt static void icp_check_ipi(ICPState *ss)
215b5cec4c5SDavid Gibson {
216b5cec4c5SDavid Gibson     if (XISR(ss) && (ss->pending_priority <= ss->mfrr)) {
217b5cec4c5SDavid Gibson         return;
218b5cec4c5SDavid Gibson     }
219b5cec4c5SDavid Gibson 
220cc706a53SBenjamin Herrenschmidt     trace_xics_icp_check_ipi(ss->cs->cpu_index, ss->mfrr);
221500efa23SDavid Gibson 
222cc706a53SBenjamin Herrenschmidt     if (XISR(ss) && ss->xirr_owner) {
223cc706a53SBenjamin Herrenschmidt         ics_reject(ss->xirr_owner, XISR(ss));
224b5cec4c5SDavid Gibson     }
225b5cec4c5SDavid Gibson 
226b5cec4c5SDavid Gibson     ss->xirr = (ss->xirr & ~XISR_MASK) | XICS_IPI;
227b5cec4c5SDavid Gibson     ss->pending_priority = ss->mfrr;
228cc706a53SBenjamin Herrenschmidt     ss->xirr_owner = NULL;
229b5cec4c5SDavid Gibson     qemu_irq_raise(ss->output);
230b5cec4c5SDavid Gibson }
231b5cec4c5SDavid Gibson 
232e3403258SCédric Le Goater static void icp_resend(ICPState *ss)
233b5cec4c5SDavid Gibson {
234*2cd908d0SCédric Le Goater     XICSFabric *xi = ss->xics;
235*2cd908d0SCédric Le Goater     XICSFabricClass *xic = XICS_FABRIC_GET_CLASS(xi);
236b5cec4c5SDavid Gibson 
237b5cec4c5SDavid Gibson     if (ss->mfrr < CPPR(ss)) {
238cc706a53SBenjamin Herrenschmidt         icp_check_ipi(ss);
239b5cec4c5SDavid Gibson     }
240*2cd908d0SCédric Le Goater 
241*2cd908d0SCédric Le Goater     xic->ics_resend(xi);
242b5cec4c5SDavid Gibson }
243b5cec4c5SDavid Gibson 
244e3403258SCédric Le Goater void icp_set_cppr(ICPState *ss, uint8_t cppr)
245b5cec4c5SDavid Gibson {
246b5cec4c5SDavid Gibson     uint8_t old_cppr;
247b5cec4c5SDavid Gibson     uint32_t old_xisr;
248b5cec4c5SDavid Gibson 
249b5cec4c5SDavid Gibson     old_cppr = CPPR(ss);
250b5cec4c5SDavid Gibson     ss->xirr = (ss->xirr & ~CPPR_MASK) | (cppr << 24);
251b5cec4c5SDavid Gibson 
252b5cec4c5SDavid Gibson     if (cppr < old_cppr) {
253b5cec4c5SDavid Gibson         if (XISR(ss) && (cppr <= ss->pending_priority)) {
254b5cec4c5SDavid Gibson             old_xisr = XISR(ss);
255b5cec4c5SDavid Gibson             ss->xirr &= ~XISR_MASK; /* Clear XISR */
256e03c902cSDavid Gibson             ss->pending_priority = 0xff;
257b5cec4c5SDavid Gibson             qemu_irq_lower(ss->output);
258cc706a53SBenjamin Herrenschmidt             if (ss->xirr_owner) {
259cc706a53SBenjamin Herrenschmidt                 ics_reject(ss->xirr_owner, old_xisr);
260cc706a53SBenjamin Herrenschmidt                 ss->xirr_owner = NULL;
261cc706a53SBenjamin Herrenschmidt             }
262b5cec4c5SDavid Gibson         }
263b5cec4c5SDavid Gibson     } else {
264b5cec4c5SDavid Gibson         if (!XISR(ss)) {
265e3403258SCédric Le Goater             icp_resend(ss);
266b5cec4c5SDavid Gibson         }
267b5cec4c5SDavid Gibson     }
268b5cec4c5SDavid Gibson }
269b5cec4c5SDavid Gibson 
270e3403258SCédric Le Goater void icp_set_mfrr(ICPState *ss, uint8_t mfrr)
271b5cec4c5SDavid Gibson {
272b5cec4c5SDavid Gibson     ss->mfrr = mfrr;
273b5cec4c5SDavid Gibson     if (mfrr < CPPR(ss)) {
274cc706a53SBenjamin Herrenschmidt         icp_check_ipi(ss);
275b5cec4c5SDavid Gibson     }
276b5cec4c5SDavid Gibson }
277b5cec4c5SDavid Gibson 
2789c7027baSBenjamin Herrenschmidt uint32_t icp_accept(ICPState *ss)
279b5cec4c5SDavid Gibson {
280500efa23SDavid Gibson     uint32_t xirr = ss->xirr;
281b5cec4c5SDavid Gibson 
282b5cec4c5SDavid Gibson     qemu_irq_lower(ss->output);
283b5cec4c5SDavid Gibson     ss->xirr = ss->pending_priority << 24;
284e03c902cSDavid Gibson     ss->pending_priority = 0xff;
285cc706a53SBenjamin Herrenschmidt     ss->xirr_owner = NULL;
286500efa23SDavid Gibson 
287500efa23SDavid Gibson     trace_xics_icp_accept(xirr, ss->xirr);
288500efa23SDavid Gibson 
289b5cec4c5SDavid Gibson     return xirr;
290b5cec4c5SDavid Gibson }
291b5cec4c5SDavid Gibson 
2921cbd2220SBenjamin Herrenschmidt uint32_t icp_ipoll(ICPState *ss, uint32_t *mfrr)
2931cbd2220SBenjamin Herrenschmidt {
2941cbd2220SBenjamin Herrenschmidt     if (mfrr) {
2951cbd2220SBenjamin Herrenschmidt         *mfrr = ss->mfrr;
2961cbd2220SBenjamin Herrenschmidt     }
2971cbd2220SBenjamin Herrenschmidt     return ss->xirr;
2981cbd2220SBenjamin Herrenschmidt }
2991cbd2220SBenjamin Herrenschmidt 
300e3403258SCédric Le Goater void icp_eoi(ICPState *ss, uint32_t xirr)
301b5cec4c5SDavid Gibson {
302*2cd908d0SCédric Le Goater     XICSFabric *xi = ss->xics;
303*2cd908d0SCédric Le Goater     XICSFabricClass *xic = XICS_FABRIC_GET_CLASS(xi);
304cc706a53SBenjamin Herrenschmidt     ICSState *ics;
305cc706a53SBenjamin Herrenschmidt     uint32_t irq;
306b5cec4c5SDavid Gibson 
307b5cec4c5SDavid Gibson     /* Send EOI -> ICS */
308b5cec4c5SDavid Gibson     ss->xirr = (ss->xirr & ~CPPR_MASK) | (xirr & CPPR_MASK);
309e3403258SCédric Le Goater     trace_xics_icp_eoi(ss->cs->cpu_index, xirr, ss->xirr);
310cc706a53SBenjamin Herrenschmidt     irq = xirr & XISR_MASK;
311*2cd908d0SCédric Le Goater 
312*2cd908d0SCédric Le Goater     ics = xic->ics_get(xi, irq);
313*2cd908d0SCédric Le Goater     if (ics) {
314cc706a53SBenjamin Herrenschmidt         ics_eoi(ics, irq);
315cc706a53SBenjamin Herrenschmidt     }
316b5cec4c5SDavid Gibson     if (!XISR(ss)) {
317e3403258SCédric Le Goater         icp_resend(ss);
318b5cec4c5SDavid Gibson     }
319b5cec4c5SDavid Gibson }
320b5cec4c5SDavid Gibson 
321cc706a53SBenjamin Herrenschmidt static void icp_irq(ICSState *ics, int server, int nr, uint8_t priority)
322b5cec4c5SDavid Gibson {
323cc706a53SBenjamin Herrenschmidt     XICSState *xics = ics->xics;
32427f24582SBenjamin Herrenschmidt     ICPState *ss = xics->ss + server;
325b5cec4c5SDavid Gibson 
326500efa23SDavid Gibson     trace_xics_icp_irq(server, nr, priority);
327500efa23SDavid Gibson 
328b5cec4c5SDavid Gibson     if ((priority >= CPPR(ss))
329b5cec4c5SDavid Gibson         || (XISR(ss) && (ss->pending_priority <= priority))) {
330cc706a53SBenjamin Herrenschmidt         ics_reject(ics, nr);
331b5cec4c5SDavid Gibson     } else {
332cc706a53SBenjamin Herrenschmidt         if (XISR(ss) && ss->xirr_owner) {
333cc706a53SBenjamin Herrenschmidt             ics_reject(ss->xirr_owner, XISR(ss));
334cc706a53SBenjamin Herrenschmidt             ss->xirr_owner = NULL;
335b5cec4c5SDavid Gibson         }
336b5cec4c5SDavid Gibson         ss->xirr = (ss->xirr & ~XISR_MASK) | (nr & XISR_MASK);
337cc706a53SBenjamin Herrenschmidt         ss->xirr_owner = ics;
338b5cec4c5SDavid Gibson         ss->pending_priority = priority;
339500efa23SDavid Gibson         trace_xics_icp_raise(ss->xirr, ss->pending_priority);
340b5cec4c5SDavid Gibson         qemu_irq_raise(ss->output);
341b5cec4c5SDavid Gibson     }
342b5cec4c5SDavid Gibson }
343b5cec4c5SDavid Gibson 
344d1b5682dSAlexey Kardashevskiy static void icp_dispatch_pre_save(void *opaque)
345d1b5682dSAlexey Kardashevskiy {
346d1b5682dSAlexey Kardashevskiy     ICPState *ss = opaque;
347d1b5682dSAlexey Kardashevskiy     ICPStateClass *info = ICP_GET_CLASS(ss);
348d1b5682dSAlexey Kardashevskiy 
349d1b5682dSAlexey Kardashevskiy     if (info->pre_save) {
350d1b5682dSAlexey Kardashevskiy         info->pre_save(ss);
351d1b5682dSAlexey Kardashevskiy     }
352d1b5682dSAlexey Kardashevskiy }
353d1b5682dSAlexey Kardashevskiy 
354d1b5682dSAlexey Kardashevskiy static int icp_dispatch_post_load(void *opaque, int version_id)
355d1b5682dSAlexey Kardashevskiy {
356d1b5682dSAlexey Kardashevskiy     ICPState *ss = opaque;
357d1b5682dSAlexey Kardashevskiy     ICPStateClass *info = ICP_GET_CLASS(ss);
358d1b5682dSAlexey Kardashevskiy 
359d1b5682dSAlexey Kardashevskiy     if (info->post_load) {
360d1b5682dSAlexey Kardashevskiy         return info->post_load(ss, version_id);
361d1b5682dSAlexey Kardashevskiy     }
362d1b5682dSAlexey Kardashevskiy 
363d1b5682dSAlexey Kardashevskiy     return 0;
364d1b5682dSAlexey Kardashevskiy }
365d1b5682dSAlexey Kardashevskiy 
366c04d6cfaSAnthony Liguori static const VMStateDescription vmstate_icp_server = {
367c04d6cfaSAnthony Liguori     .name = "icp/server",
368c04d6cfaSAnthony Liguori     .version_id = 1,
369c04d6cfaSAnthony Liguori     .minimum_version_id = 1,
370d1b5682dSAlexey Kardashevskiy     .pre_save = icp_dispatch_pre_save,
371d1b5682dSAlexey Kardashevskiy     .post_load = icp_dispatch_post_load,
372c04d6cfaSAnthony Liguori     .fields = (VMStateField[]) {
373c04d6cfaSAnthony Liguori         /* Sanity check */
374c04d6cfaSAnthony Liguori         VMSTATE_UINT32(xirr, ICPState),
375c04d6cfaSAnthony Liguori         VMSTATE_UINT8(pending_priority, ICPState),
376c04d6cfaSAnthony Liguori         VMSTATE_UINT8(mfrr, ICPState),
377c04d6cfaSAnthony Liguori         VMSTATE_END_OF_LIST()
378c04d6cfaSAnthony Liguori     },
379c04d6cfaSAnthony Liguori };
380c04d6cfaSAnthony Liguori 
381c04d6cfaSAnthony Liguori static void icp_reset(DeviceState *dev)
382c04d6cfaSAnthony Liguori {
383c04d6cfaSAnthony Liguori     ICPState *icp = ICP(dev);
384c04d6cfaSAnthony Liguori 
385c04d6cfaSAnthony Liguori     icp->xirr = 0;
386c04d6cfaSAnthony Liguori     icp->pending_priority = 0xff;
387c04d6cfaSAnthony Liguori     icp->mfrr = 0xff;
388c04d6cfaSAnthony Liguori 
389c04d6cfaSAnthony Liguori     /* Make all outputs are deasserted */
390c04d6cfaSAnthony Liguori     qemu_set_irq(icp->output, 0);
391c04d6cfaSAnthony Liguori }
392c04d6cfaSAnthony Liguori 
393817bb6a4SCédric Le Goater static void icp_realize(DeviceState *dev, Error **errp)
394817bb6a4SCédric Le Goater {
395817bb6a4SCédric Le Goater     ICPState *icp = ICP(dev);
396817bb6a4SCédric Le Goater     Object *obj;
397817bb6a4SCédric Le Goater     Error *err = NULL;
398817bb6a4SCédric Le Goater 
399817bb6a4SCédric Le Goater     obj = object_property_get_link(OBJECT(dev), "xics", &err);
400817bb6a4SCédric Le Goater     if (!obj) {
401817bb6a4SCédric Le Goater         error_setg(errp, "%s: required link 'xics' not found: %s",
402817bb6a4SCédric Le Goater                    __func__, error_get_pretty(err));
403817bb6a4SCédric Le Goater         return;
404817bb6a4SCédric Le Goater     }
405817bb6a4SCédric Le Goater 
406*2cd908d0SCédric Le Goater     icp->xics = XICS_FABRIC(obj);
407817bb6a4SCédric Le Goater }
408817bb6a4SCédric Le Goater 
409817bb6a4SCédric Le Goater 
410c04d6cfaSAnthony Liguori static void icp_class_init(ObjectClass *klass, void *data)
411c04d6cfaSAnthony Liguori {
412c04d6cfaSAnthony Liguori     DeviceClass *dc = DEVICE_CLASS(klass);
413b9038e78SCédric Le Goater     InterruptStatsProviderClass *ic = INTERRUPT_STATS_PROVIDER_CLASS(klass);
414c04d6cfaSAnthony Liguori 
415c04d6cfaSAnthony Liguori     dc->reset = icp_reset;
416c04d6cfaSAnthony Liguori     dc->vmsd = &vmstate_icp_server;
417817bb6a4SCédric Le Goater     dc->realize = icp_realize;
418b9038e78SCédric Le Goater     ic->print_info = icp_pic_print_info;
419c04d6cfaSAnthony Liguori }
420c04d6cfaSAnthony Liguori 
421456df19cSAlexey Kardashevskiy static const TypeInfo icp_info = {
422c04d6cfaSAnthony Liguori     .name = TYPE_ICP,
423c04d6cfaSAnthony Liguori     .parent = TYPE_DEVICE,
424c04d6cfaSAnthony Liguori     .instance_size = sizeof(ICPState),
425c04d6cfaSAnthony Liguori     .class_init = icp_class_init,
426d1b5682dSAlexey Kardashevskiy     .class_size = sizeof(ICPStateClass),
427b9038e78SCédric Le Goater     .interfaces = (InterfaceInfo[]) {
428b9038e78SCédric Le Goater         { TYPE_INTERRUPT_STATS_PROVIDER },
429b9038e78SCédric Le Goater         { }
430b9038e78SCédric Le Goater     },
431c04d6cfaSAnthony Liguori };
432c04d6cfaSAnthony Liguori 
433b5cec4c5SDavid Gibson /*
434b5cec4c5SDavid Gibson  * ICS: Source layer
435b5cec4c5SDavid Gibson  */
436d4d7a59aSBenjamin Herrenschmidt static void ics_simple_resend_msi(ICSState *ics, int srcno)
437b5cec4c5SDavid Gibson {
438c04d6cfaSAnthony Liguori     ICSIRQState *irq = ics->irqs + srcno;
439d07fee7eSDavid Gibson 
440d07fee7eSDavid Gibson     /* FIXME: filter by server#? */
44198ca8c02SDavid Gibson     if (irq->status & XICS_STATUS_REJECTED) {
44298ca8c02SDavid Gibson         irq->status &= ~XICS_STATUS_REJECTED;
443d07fee7eSDavid Gibson         if (irq->priority != 0xff) {
444cc706a53SBenjamin Herrenschmidt             icp_irq(ics, irq->server, srcno + ics->offset, irq->priority);
445d07fee7eSDavid Gibson         }
446d07fee7eSDavid Gibson     }
447d07fee7eSDavid Gibson }
448d07fee7eSDavid Gibson 
449d4d7a59aSBenjamin Herrenschmidt static void ics_simple_resend_lsi(ICSState *ics, int srcno)
450d07fee7eSDavid Gibson {
451c04d6cfaSAnthony Liguori     ICSIRQState *irq = ics->irqs + srcno;
452d07fee7eSDavid Gibson 
45398ca8c02SDavid Gibson     if ((irq->priority != 0xff)
45498ca8c02SDavid Gibson         && (irq->status & XICS_STATUS_ASSERTED)
45598ca8c02SDavid Gibson         && !(irq->status & XICS_STATUS_SENT)) {
45698ca8c02SDavid Gibson         irq->status |= XICS_STATUS_SENT;
457cc706a53SBenjamin Herrenschmidt         icp_irq(ics, irq->server, srcno + ics->offset, irq->priority);
458d07fee7eSDavid Gibson     }
459d07fee7eSDavid Gibson }
460d07fee7eSDavid Gibson 
461d4d7a59aSBenjamin Herrenschmidt static void ics_simple_set_irq_msi(ICSState *ics, int srcno, int val)
462d07fee7eSDavid Gibson {
463c04d6cfaSAnthony Liguori     ICSIRQState *irq = ics->irqs + srcno;
464b5cec4c5SDavid Gibson 
465d4d7a59aSBenjamin Herrenschmidt     trace_xics_ics_simple_set_irq_msi(srcno, srcno + ics->offset);
466500efa23SDavid Gibson 
467b5cec4c5SDavid Gibson     if (val) {
468b5cec4c5SDavid Gibson         if (irq->priority == 0xff) {
46998ca8c02SDavid Gibson             irq->status |= XICS_STATUS_MASKED_PENDING;
470500efa23SDavid Gibson             trace_xics_masked_pending();
471b5cec4c5SDavid Gibson         } else  {
472cc706a53SBenjamin Herrenschmidt             icp_irq(ics, irq->server, srcno + ics->offset, irq->priority);
473b5cec4c5SDavid Gibson         }
474b5cec4c5SDavid Gibson     }
475b5cec4c5SDavid Gibson }
476b5cec4c5SDavid Gibson 
477d4d7a59aSBenjamin Herrenschmidt static void ics_simple_set_irq_lsi(ICSState *ics, int srcno, int val)
478d07fee7eSDavid Gibson {
479c04d6cfaSAnthony Liguori     ICSIRQState *irq = ics->irqs + srcno;
480d07fee7eSDavid Gibson 
481d4d7a59aSBenjamin Herrenschmidt     trace_xics_ics_simple_set_irq_lsi(srcno, srcno + ics->offset);
48298ca8c02SDavid Gibson     if (val) {
48398ca8c02SDavid Gibson         irq->status |= XICS_STATUS_ASSERTED;
48498ca8c02SDavid Gibson     } else {
48598ca8c02SDavid Gibson         irq->status &= ~XICS_STATUS_ASSERTED;
48698ca8c02SDavid Gibson     }
487d4d7a59aSBenjamin Herrenschmidt     ics_simple_resend_lsi(ics, srcno);
488d07fee7eSDavid Gibson }
489d07fee7eSDavid Gibson 
490d4d7a59aSBenjamin Herrenschmidt static void ics_simple_set_irq(void *opaque, int srcno, int val)
491d07fee7eSDavid Gibson {
492c04d6cfaSAnthony Liguori     ICSState *ics = (ICSState *)opaque;
493d07fee7eSDavid Gibson 
4944af88944SAlexey Kardashevskiy     if (ics->irqs[srcno].flags & XICS_FLAGS_IRQ_LSI) {
495d4d7a59aSBenjamin Herrenschmidt         ics_simple_set_irq_lsi(ics, srcno, val);
496d07fee7eSDavid Gibson     } else {
497d4d7a59aSBenjamin Herrenschmidt         ics_simple_set_irq_msi(ics, srcno, val);
498d07fee7eSDavid Gibson     }
499d07fee7eSDavid Gibson }
500d07fee7eSDavid Gibson 
501d4d7a59aSBenjamin Herrenschmidt static void ics_simple_write_xive_msi(ICSState *ics, int srcno)
502d07fee7eSDavid Gibson {
503c04d6cfaSAnthony Liguori     ICSIRQState *irq = ics->irqs + srcno;
504d07fee7eSDavid Gibson 
50598ca8c02SDavid Gibson     if (!(irq->status & XICS_STATUS_MASKED_PENDING)
50698ca8c02SDavid Gibson         || (irq->priority == 0xff)) {
507d07fee7eSDavid Gibson         return;
508d07fee7eSDavid Gibson     }
509d07fee7eSDavid Gibson 
51098ca8c02SDavid Gibson     irq->status &= ~XICS_STATUS_MASKED_PENDING;
511cc706a53SBenjamin Herrenschmidt     icp_irq(ics, irq->server, srcno + ics->offset, irq->priority);
512d07fee7eSDavid Gibson }
513d07fee7eSDavid Gibson 
514d4d7a59aSBenjamin Herrenschmidt static void ics_simple_write_xive_lsi(ICSState *ics, int srcno)
515d07fee7eSDavid Gibson {
516d4d7a59aSBenjamin Herrenschmidt     ics_simple_resend_lsi(ics, srcno);
517d07fee7eSDavid Gibson }
518d07fee7eSDavid Gibson 
519d4d7a59aSBenjamin Herrenschmidt void ics_simple_write_xive(ICSState *ics, int srcno, int server,
5203fe719f4SDavid Gibson                            uint8_t priority, uint8_t saved_priority)
521d07fee7eSDavid Gibson {
522c04d6cfaSAnthony Liguori     ICSIRQState *irq = ics->irqs + srcno;
523d07fee7eSDavid Gibson 
524d07fee7eSDavid Gibson     irq->server = server;
525d07fee7eSDavid Gibson     irq->priority = priority;
5263fe719f4SDavid Gibson     irq->saved_priority = saved_priority;
527d07fee7eSDavid Gibson 
528d4d7a59aSBenjamin Herrenschmidt     trace_xics_ics_simple_write_xive(ics->offset + srcno, srcno, server,
529d4d7a59aSBenjamin Herrenschmidt                                      priority);
530500efa23SDavid Gibson 
5314af88944SAlexey Kardashevskiy     if (ics->irqs[srcno].flags & XICS_FLAGS_IRQ_LSI) {
532d4d7a59aSBenjamin Herrenschmidt         ics_simple_write_xive_lsi(ics, srcno);
533d07fee7eSDavid Gibson     } else {
534d4d7a59aSBenjamin Herrenschmidt         ics_simple_write_xive_msi(ics, srcno);
535d07fee7eSDavid Gibson     }
536d07fee7eSDavid Gibson }
537d07fee7eSDavid Gibson 
538d4d7a59aSBenjamin Herrenschmidt static void ics_simple_reject(ICSState *ics, uint32_t nr)
539b5cec4c5SDavid Gibson {
540c04d6cfaSAnthony Liguori     ICSIRQState *irq = ics->irqs + nr - ics->offset;
541b5cec4c5SDavid Gibson 
542d4d7a59aSBenjamin Herrenschmidt     trace_xics_ics_simple_reject(nr, nr - ics->offset);
543056b9775SNikunj A Dadhania     if (irq->flags & XICS_FLAGS_IRQ_MSI) {
544056b9775SNikunj A Dadhania         irq->status |= XICS_STATUS_REJECTED;
545056b9775SNikunj A Dadhania     } else if (irq->flags & XICS_FLAGS_IRQ_LSI) {
546056b9775SNikunj A Dadhania         irq->status &= ~XICS_STATUS_SENT;
547056b9775SNikunj A Dadhania     }
548b5cec4c5SDavid Gibson }
549b5cec4c5SDavid Gibson 
550d4d7a59aSBenjamin Herrenschmidt static void ics_simple_resend(ICSState *ics)
551b5cec4c5SDavid Gibson {
552b5cec4c5SDavid Gibson     int i;
553b5cec4c5SDavid Gibson 
554b5cec4c5SDavid Gibson     for (i = 0; i < ics->nr_irqs; i++) {
555b5cec4c5SDavid Gibson         /* FIXME: filter by server#? */
5564af88944SAlexey Kardashevskiy         if (ics->irqs[i].flags & XICS_FLAGS_IRQ_LSI) {
557d4d7a59aSBenjamin Herrenschmidt             ics_simple_resend_lsi(ics, i);
558d07fee7eSDavid Gibson         } else {
559d4d7a59aSBenjamin Herrenschmidt             ics_simple_resend_msi(ics, i);
560b5cec4c5SDavid Gibson         }
561b5cec4c5SDavid Gibson     }
562b5cec4c5SDavid Gibson }
563b5cec4c5SDavid Gibson 
564d4d7a59aSBenjamin Herrenschmidt static void ics_simple_eoi(ICSState *ics, uint32_t nr)
565b5cec4c5SDavid Gibson {
566d07fee7eSDavid Gibson     int srcno = nr - ics->offset;
567c04d6cfaSAnthony Liguori     ICSIRQState *irq = ics->irqs + srcno;
568d07fee7eSDavid Gibson 
569d4d7a59aSBenjamin Herrenschmidt     trace_xics_ics_simple_eoi(nr);
570500efa23SDavid Gibson 
5714af88944SAlexey Kardashevskiy     if (ics->irqs[srcno].flags & XICS_FLAGS_IRQ_LSI) {
57298ca8c02SDavid Gibson         irq->status &= ~XICS_STATUS_SENT;
573d07fee7eSDavid Gibson     }
574b5cec4c5SDavid Gibson }
575b5cec4c5SDavid Gibson 
576d4d7a59aSBenjamin Herrenschmidt static void ics_simple_reset(DeviceState *dev)
577c04d6cfaSAnthony Liguori {
578d4d7a59aSBenjamin Herrenschmidt     ICSState *ics = ICS_SIMPLE(dev);
579c04d6cfaSAnthony Liguori     int i;
580a7e519a8SAlexey Kardashevskiy     uint8_t flags[ics->nr_irqs];
581a7e519a8SAlexey Kardashevskiy 
582a7e519a8SAlexey Kardashevskiy     for (i = 0; i < ics->nr_irqs; i++) {
583a7e519a8SAlexey Kardashevskiy         flags[i] = ics->irqs[i].flags;
584a7e519a8SAlexey Kardashevskiy     }
585c04d6cfaSAnthony Liguori 
586c04d6cfaSAnthony Liguori     memset(ics->irqs, 0, sizeof(ICSIRQState) * ics->nr_irqs);
587a7e519a8SAlexey Kardashevskiy 
588c04d6cfaSAnthony Liguori     for (i = 0; i < ics->nr_irqs; i++) {
589c04d6cfaSAnthony Liguori         ics->irqs[i].priority = 0xff;
590c04d6cfaSAnthony Liguori         ics->irqs[i].saved_priority = 0xff;
591a7e519a8SAlexey Kardashevskiy         ics->irqs[i].flags = flags[i];
592c04d6cfaSAnthony Liguori     }
593c04d6cfaSAnthony Liguori }
594c04d6cfaSAnthony Liguori 
595d4d7a59aSBenjamin Herrenschmidt static int ics_simple_post_load(ICSState *ics, int version_id)
596c04d6cfaSAnthony Liguori {
597c04d6cfaSAnthony Liguori     int i;
598c04d6cfaSAnthony Liguori 
59927f24582SBenjamin Herrenschmidt     for (i = 0; i < ics->xics->nr_servers; i++) {
600e3403258SCédric Le Goater         icp_resend(&ics->xics->ss[i]);
601c04d6cfaSAnthony Liguori     }
602c04d6cfaSAnthony Liguori 
603c04d6cfaSAnthony Liguori     return 0;
604c04d6cfaSAnthony Liguori }
605c04d6cfaSAnthony Liguori 
606d4d7a59aSBenjamin Herrenschmidt static void ics_simple_dispatch_pre_save(void *opaque)
607d1b5682dSAlexey Kardashevskiy {
608d1b5682dSAlexey Kardashevskiy     ICSState *ics = opaque;
609d4d7a59aSBenjamin Herrenschmidt     ICSStateClass *info = ICS_BASE_GET_CLASS(ics);
610d1b5682dSAlexey Kardashevskiy 
611d1b5682dSAlexey Kardashevskiy     if (info->pre_save) {
612d1b5682dSAlexey Kardashevskiy         info->pre_save(ics);
613d1b5682dSAlexey Kardashevskiy     }
614d1b5682dSAlexey Kardashevskiy }
615d1b5682dSAlexey Kardashevskiy 
616d4d7a59aSBenjamin Herrenschmidt static int ics_simple_dispatch_post_load(void *opaque, int version_id)
617d1b5682dSAlexey Kardashevskiy {
618d1b5682dSAlexey Kardashevskiy     ICSState *ics = opaque;
619d4d7a59aSBenjamin Herrenschmidt     ICSStateClass *info = ICS_BASE_GET_CLASS(ics);
620d1b5682dSAlexey Kardashevskiy 
621d1b5682dSAlexey Kardashevskiy     if (info->post_load) {
622d1b5682dSAlexey Kardashevskiy         return info->post_load(ics, version_id);
623d1b5682dSAlexey Kardashevskiy     }
624d1b5682dSAlexey Kardashevskiy 
625d1b5682dSAlexey Kardashevskiy     return 0;
626d1b5682dSAlexey Kardashevskiy }
627d1b5682dSAlexey Kardashevskiy 
628d4d7a59aSBenjamin Herrenschmidt static const VMStateDescription vmstate_ics_simple_irq = {
629c04d6cfaSAnthony Liguori     .name = "ics/irq",
6304af88944SAlexey Kardashevskiy     .version_id = 2,
631c04d6cfaSAnthony Liguori     .minimum_version_id = 1,
632c04d6cfaSAnthony Liguori     .fields = (VMStateField[]) {
633c04d6cfaSAnthony Liguori         VMSTATE_UINT32(server, ICSIRQState),
634c04d6cfaSAnthony Liguori         VMSTATE_UINT8(priority, ICSIRQState),
635c04d6cfaSAnthony Liguori         VMSTATE_UINT8(saved_priority, ICSIRQState),
636c04d6cfaSAnthony Liguori         VMSTATE_UINT8(status, ICSIRQState),
6374af88944SAlexey Kardashevskiy         VMSTATE_UINT8(flags, ICSIRQState),
638c04d6cfaSAnthony Liguori         VMSTATE_END_OF_LIST()
639c04d6cfaSAnthony Liguori     },
640c04d6cfaSAnthony Liguori };
641c04d6cfaSAnthony Liguori 
642d4d7a59aSBenjamin Herrenschmidt static const VMStateDescription vmstate_ics_simple = {
643c04d6cfaSAnthony Liguori     .name = "ics",
644c04d6cfaSAnthony Liguori     .version_id = 1,
645c04d6cfaSAnthony Liguori     .minimum_version_id = 1,
646d4d7a59aSBenjamin Herrenschmidt     .pre_save = ics_simple_dispatch_pre_save,
647d4d7a59aSBenjamin Herrenschmidt     .post_load = ics_simple_dispatch_post_load,
648c04d6cfaSAnthony Liguori     .fields = (VMStateField[]) {
649c04d6cfaSAnthony Liguori         /* Sanity check */
650c04d6cfaSAnthony Liguori         VMSTATE_UINT32_EQUAL(nr_irqs, ICSState),
651c04d6cfaSAnthony Liguori 
652c04d6cfaSAnthony Liguori         VMSTATE_STRUCT_VARRAY_POINTER_UINT32(irqs, ICSState, nr_irqs,
653d4d7a59aSBenjamin Herrenschmidt                                              vmstate_ics_simple_irq,
654d4d7a59aSBenjamin Herrenschmidt                                              ICSIRQState),
655c04d6cfaSAnthony Liguori         VMSTATE_END_OF_LIST()
656c04d6cfaSAnthony Liguori     },
657c04d6cfaSAnthony Liguori };
658c04d6cfaSAnthony Liguori 
659d4d7a59aSBenjamin Herrenschmidt static void ics_simple_initfn(Object *obj)
6605a3d7b23SAlexey Kardashevskiy {
661d4d7a59aSBenjamin Herrenschmidt     ICSState *ics = ICS_SIMPLE(obj);
6625a3d7b23SAlexey Kardashevskiy 
6635a3d7b23SAlexey Kardashevskiy     ics->offset = XICS_IRQ_BASE;
6645a3d7b23SAlexey Kardashevskiy }
6655a3d7b23SAlexey Kardashevskiy 
666d4d7a59aSBenjamin Herrenschmidt static void ics_simple_realize(DeviceState *dev, Error **errp)
667c04d6cfaSAnthony Liguori {
668d4d7a59aSBenjamin Herrenschmidt     ICSState *ics = ICS_SIMPLE(dev);
669c04d6cfaSAnthony Liguori 
670b45ff2d9SAlexey Kardashevskiy     if (!ics->nr_irqs) {
671b45ff2d9SAlexey Kardashevskiy         error_setg(errp, "Number of interrupts needs to be greater 0");
672b45ff2d9SAlexey Kardashevskiy         return;
673b45ff2d9SAlexey Kardashevskiy     }
674c04d6cfaSAnthony Liguori     ics->irqs = g_malloc0(ics->nr_irqs * sizeof(ICSIRQState));
675d4d7a59aSBenjamin Herrenschmidt     ics->qirqs = qemu_allocate_irqs(ics_simple_set_irq, ics, ics->nr_irqs);
676c04d6cfaSAnthony Liguori }
677c04d6cfaSAnthony Liguori 
6784e4169f7SCédric Le Goater static Property ics_simple_properties[] = {
6794e4169f7SCédric Le Goater     DEFINE_PROP_UINT32("nr-irqs", ICSState, nr_irqs, 0),
6804e4169f7SCédric Le Goater     DEFINE_PROP_END_OF_LIST(),
6814e4169f7SCédric Le Goater };
6824e4169f7SCédric Le Goater 
683d4d7a59aSBenjamin Herrenschmidt static void ics_simple_class_init(ObjectClass *klass, void *data)
684c04d6cfaSAnthony Liguori {
685c04d6cfaSAnthony Liguori     DeviceClass *dc = DEVICE_CLASS(klass);
686d4d7a59aSBenjamin Herrenschmidt     ICSStateClass *isc = ICS_BASE_CLASS(klass);
687b9038e78SCédric Le Goater     InterruptStatsProviderClass *ic = INTERRUPT_STATS_PROVIDER_CLASS(klass);
688c04d6cfaSAnthony Liguori 
6894e4169f7SCédric Le Goater     isc->realize = ics_simple_realize;
6904e4169f7SCédric Le Goater     dc->props = ics_simple_properties;
691d4d7a59aSBenjamin Herrenschmidt     dc->vmsd = &vmstate_ics_simple;
692d4d7a59aSBenjamin Herrenschmidt     dc->reset = ics_simple_reset;
693d4d7a59aSBenjamin Herrenschmidt     isc->post_load = ics_simple_post_load;
694d4d7a59aSBenjamin Herrenschmidt     isc->reject = ics_simple_reject;
695d4d7a59aSBenjamin Herrenschmidt     isc->resend = ics_simple_resend;
696d4d7a59aSBenjamin Herrenschmidt     isc->eoi = ics_simple_eoi;
697b9038e78SCédric Le Goater     ic->print_info = ics_simple_pic_print_info;
698c04d6cfaSAnthony Liguori }
699c04d6cfaSAnthony Liguori 
700d4d7a59aSBenjamin Herrenschmidt static const TypeInfo ics_simple_info = {
701d4d7a59aSBenjamin Herrenschmidt     .name = TYPE_ICS_SIMPLE,
702d4d7a59aSBenjamin Herrenschmidt     .parent = TYPE_ICS_BASE,
703c04d6cfaSAnthony Liguori     .instance_size = sizeof(ICSState),
704d4d7a59aSBenjamin Herrenschmidt     .class_init = ics_simple_class_init,
705d1b5682dSAlexey Kardashevskiy     .class_size = sizeof(ICSStateClass),
706d4d7a59aSBenjamin Herrenschmidt     .instance_init = ics_simple_initfn,
707b9038e78SCédric Le Goater     .interfaces = (InterfaceInfo[]) {
708b9038e78SCédric Le Goater         { TYPE_INTERRUPT_STATS_PROVIDER },
709b9038e78SCédric Le Goater         { }
710b9038e78SCédric Le Goater     },
711d4d7a59aSBenjamin Herrenschmidt };
712d4d7a59aSBenjamin Herrenschmidt 
7134e4169f7SCédric Le Goater static void ics_base_realize(DeviceState *dev, Error **errp)
7144e4169f7SCédric Le Goater {
7154e4169f7SCédric Le Goater     ICSStateClass *icsc = ICS_BASE_GET_CLASS(dev);
7164e4169f7SCédric Le Goater     ICSState *ics = ICS_BASE(dev);
7174e4169f7SCédric Le Goater     Object *obj;
7184e4169f7SCédric Le Goater     Error *err = NULL;
7194e4169f7SCédric Le Goater 
7204e4169f7SCédric Le Goater     obj = object_property_get_link(OBJECT(dev), "xics", &err);
7214e4169f7SCédric Le Goater     if (!obj) {
7224e4169f7SCédric Le Goater         error_setg(errp, "%s: required link 'xics' not found: %s",
7234e4169f7SCédric Le Goater                    __func__, error_get_pretty(err));
7244e4169f7SCédric Le Goater         return;
7254e4169f7SCédric Le Goater     }
7264e4169f7SCédric Le Goater     ics->xics = XICS_COMMON(obj);
7274e4169f7SCédric Le Goater 
7284e4169f7SCédric Le Goater 
7294e4169f7SCédric Le Goater     if (icsc->realize) {
7304e4169f7SCédric Le Goater         icsc->realize(dev, errp);
7314e4169f7SCédric Le Goater     }
7324e4169f7SCédric Le Goater }
7334e4169f7SCédric Le Goater 
7344e4169f7SCédric Le Goater static void ics_base_class_init(ObjectClass *klass, void *data)
7354e4169f7SCédric Le Goater {
7364e4169f7SCédric Le Goater     DeviceClass *dc = DEVICE_CLASS(klass);
7374e4169f7SCédric Le Goater 
7384e4169f7SCédric Le Goater     dc->realize = ics_base_realize;
7394e4169f7SCédric Le Goater }
7404e4169f7SCédric Le Goater 
741d4d7a59aSBenjamin Herrenschmidt static const TypeInfo ics_base_info = {
742d4d7a59aSBenjamin Herrenschmidt     .name = TYPE_ICS_BASE,
743d4d7a59aSBenjamin Herrenschmidt     .parent = TYPE_DEVICE,
744d4d7a59aSBenjamin Herrenschmidt     .abstract = true,
745d4d7a59aSBenjamin Herrenschmidt     .instance_size = sizeof(ICSState),
7464e4169f7SCédric Le Goater     .class_init = ics_base_class_init,
747d4d7a59aSBenjamin Herrenschmidt     .class_size = sizeof(ICSStateClass),
748c04d6cfaSAnthony Liguori };
749c04d6cfaSAnthony Liguori 
75051b18005SCédric Le Goater static const TypeInfo xics_fabric_info = {
75151b18005SCédric Le Goater     .name = TYPE_XICS_FABRIC,
75251b18005SCédric Le Goater     .parent = TYPE_INTERFACE,
75351b18005SCédric Le Goater     .class_size = sizeof(XICSFabricClass),
75451b18005SCédric Le Goater };
75551b18005SCédric Le Goater 
756b5cec4c5SDavid Gibson /*
757b5cec4c5SDavid Gibson  * Exported functions
758b5cec4c5SDavid Gibson  */
759cc706a53SBenjamin Herrenschmidt ICSState *xics_find_source(XICSState *xics, int irq)
760641c3493SAlexey Kardashevskiy {
761cc706a53SBenjamin Herrenschmidt     ICSState *ics;
762641c3493SAlexey Kardashevskiy 
763cc706a53SBenjamin Herrenschmidt     QLIST_FOREACH(ics, &xics->ics, list) {
764641c3493SAlexey Kardashevskiy         if (ics_valid_irq(ics, irq)) {
765cc706a53SBenjamin Herrenschmidt             return ics;
766641c3493SAlexey Kardashevskiy         }
767641c3493SAlexey Kardashevskiy     }
768cc706a53SBenjamin Herrenschmidt     return NULL;
769641c3493SAlexey Kardashevskiy }
770b5cec4c5SDavid Gibson 
771f7759e43SCédric Le Goater qemu_irq xics_get_qirq(XICSFabric *xi, int irq)
772b5cec4c5SDavid Gibson {
773f7759e43SCédric Le Goater     XICSFabricClass *xic = XICS_FABRIC_GET_CLASS(xi);
774f7759e43SCédric Le Goater     ICSState *ics = xic->ics_get(xi, irq);
775641c3493SAlexey Kardashevskiy 
776cc706a53SBenjamin Herrenschmidt     if (ics) {
777641c3493SAlexey Kardashevskiy         return ics->qirqs[irq - ics->offset];
778b5cec4c5SDavid Gibson     }
779b5cec4c5SDavid Gibson 
780641c3493SAlexey Kardashevskiy     return NULL;
781a307d594SAlexey Kardashevskiy }
782a307d594SAlexey Kardashevskiy 
7839c7027baSBenjamin Herrenschmidt void ics_set_irq_type(ICSState *ics, int srcno, bool lsi)
7844af88944SAlexey Kardashevskiy {
7854af88944SAlexey Kardashevskiy     assert(!(ics->irqs[srcno].flags & XICS_FLAGS_IRQ_MASK));
7864af88944SAlexey Kardashevskiy 
7874af88944SAlexey Kardashevskiy     ics->irqs[srcno].flags |=
7884af88944SAlexey Kardashevskiy         lsi ? XICS_FLAGS_IRQ_LSI : XICS_FLAGS_IRQ_MSI;
7894af88944SAlexey Kardashevskiy }
7904af88944SAlexey Kardashevskiy 
791c04d6cfaSAnthony Liguori static void xics_register_types(void)
792c04d6cfaSAnthony Liguori {
7935a3d7b23SAlexey Kardashevskiy     type_register_static(&xics_common_info);
794d4d7a59aSBenjamin Herrenschmidt     type_register_static(&ics_simple_info);
795d4d7a59aSBenjamin Herrenschmidt     type_register_static(&ics_base_info);
796c04d6cfaSAnthony Liguori     type_register_static(&icp_info);
79751b18005SCédric Le Goater     type_register_static(&xics_fabric_info);
798c04d6cfaSAnthony Liguori }
799c04d6cfaSAnthony Liguori 
800c04d6cfaSAnthony Liguori type_init(xics_register_types)
801