2 * QEMU PowerPC pSeries Logical Partition (aka sPAPR) hardware System Emulator
4 * PAPR Virtualized Interrupt System, aka ICS/ICP aka xics
6 * Copyright (c) 2010,2011 David Gibson, IBM Corporation.
8 * Permission is hereby granted, free of charge, to any person obtaining a copy
9 * of this software and associated documentation files (the "Software"), to deal
10 * in the Software without restriction, including without limitation the rights
11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
12 * copies of the Software, and to permit persons to whom the Software is
13 * furnished to do so, subject to the following conditions:
15 * The above copyright notice and this permission notice shall be included in
16 * all copies or substantial portions of the Software.
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
28 #include "qemu/osdep.h"
31 #include "qemu/timer.h"
32 #include "hw/ppc/spapr.h"
33 #include "hw/ppc/spapr_cpu_core.h"
34 #include "hw/ppc/xics.h"
35 #include "hw/ppc/xics_spapr.h"
36 #include "hw/ppc/fdt.h"
37 #include "qapi/visitor.h"
43 static bool check_emulated_xics(SpaprMachineState
*spapr
, const char *func
)
45 if (spapr_ovec_test(spapr
->ov5_cas
, OV5_XIVE_EXPLOIT
) ||
46 kvm_irqchip_in_kernel()) {
47 error_report("pseries: %s must only be called for emulated XICS",
55 #define CHECK_EMULATED_XICS_HCALL(spapr) \
57 if (!check_emulated_xics((spapr), __func__)) { \
62 static target_ulong
h_cppr(PowerPCCPU
*cpu
, SpaprMachineState
*spapr
,
63 target_ulong opcode
, target_ulong
*args
)
65 target_ulong cppr
= args
[0];
67 CHECK_EMULATED_XICS_HCALL(spapr
);
69 icp_set_cppr(spapr_cpu_state(cpu
)->icp
, cppr
);
73 static target_ulong
h_ipi(PowerPCCPU
*cpu
, SpaprMachineState
*spapr
,
74 target_ulong opcode
, target_ulong
*args
)
76 target_ulong mfrr
= args
[1];
77 ICPState
*icp
= xics_icp_get(XICS_FABRIC(spapr
), args
[0]);
79 CHECK_EMULATED_XICS_HCALL(spapr
);
85 icp_set_mfrr(icp
, mfrr
);
89 static target_ulong
h_xirr(PowerPCCPU
*cpu
, SpaprMachineState
*spapr
,
90 target_ulong opcode
, target_ulong
*args
)
92 uint32_t xirr
= icp_accept(spapr_cpu_state(cpu
)->icp
);
94 CHECK_EMULATED_XICS_HCALL(spapr
);
100 static target_ulong
h_xirr_x(PowerPCCPU
*cpu
, SpaprMachineState
*spapr
,
101 target_ulong opcode
, target_ulong
*args
)
103 uint32_t xirr
= icp_accept(spapr_cpu_state(cpu
)->icp
);
105 CHECK_EMULATED_XICS_HCALL(spapr
);
108 args
[1] = cpu_get_host_ticks();
112 static target_ulong
h_eoi(PowerPCCPU
*cpu
, SpaprMachineState
*spapr
,
113 target_ulong opcode
, target_ulong
*args
)
115 target_ulong xirr
= args
[0];
117 CHECK_EMULATED_XICS_HCALL(spapr
);
119 icp_eoi(spapr_cpu_state(cpu
)->icp
, xirr
);
123 static target_ulong
h_ipoll(PowerPCCPU
*cpu
, SpaprMachineState
*spapr
,
124 target_ulong opcode
, target_ulong
*args
)
126 ICPState
*icp
= xics_icp_get(XICS_FABRIC(spapr
), args
[0]);
130 CHECK_EMULATED_XICS_HCALL(spapr
);
136 xirr
= icp_ipoll(icp
, &mfrr
);
144 #define CHECK_EMULATED_XICS_RTAS(spapr, rets) \
146 if (!check_emulated_xics((spapr), __func__)) { \
147 rtas_st((rets), 0, RTAS_OUT_HW_ERROR); \
152 static void rtas_set_xive(PowerPCCPU
*cpu
, SpaprMachineState
*spapr
,
154 uint32_t nargs
, target_ulong args
,
155 uint32_t nret
, target_ulong rets
)
157 ICSState
*ics
= spapr
->ics
;
158 uint32_t nr
, srcno
, server
, priority
;
160 CHECK_EMULATED_XICS_RTAS(spapr
, rets
);
162 if ((nargs
!= 3) || (nret
!= 1)) {
163 rtas_st(rets
, 0, RTAS_OUT_PARAM_ERROR
);
167 rtas_st(rets
, 0, RTAS_OUT_HW_ERROR
);
171 nr
= rtas_ld(args
, 0);
172 server
= rtas_ld(args
, 1);
173 priority
= rtas_ld(args
, 2);
175 if (!ics_valid_irq(ics
, nr
) || !xics_icp_get(XICS_FABRIC(spapr
), server
)
176 || (priority
> 0xff)) {
177 rtas_st(rets
, 0, RTAS_OUT_PARAM_ERROR
);
181 srcno
= nr
- ics
->offset
;
182 ics_write_xive(ics
, srcno
, server
, priority
, priority
);
184 rtas_st(rets
, 0, RTAS_OUT_SUCCESS
);
187 static void rtas_get_xive(PowerPCCPU
*cpu
, SpaprMachineState
*spapr
,
189 uint32_t nargs
, target_ulong args
,
190 uint32_t nret
, target_ulong rets
)
192 ICSState
*ics
= spapr
->ics
;
195 CHECK_EMULATED_XICS_RTAS(spapr
, rets
);
197 if ((nargs
!= 1) || (nret
!= 3)) {
198 rtas_st(rets
, 0, RTAS_OUT_PARAM_ERROR
);
202 rtas_st(rets
, 0, RTAS_OUT_HW_ERROR
);
206 nr
= rtas_ld(args
, 0);
208 if (!ics_valid_irq(ics
, nr
)) {
209 rtas_st(rets
, 0, RTAS_OUT_PARAM_ERROR
);
213 rtas_st(rets
, 0, RTAS_OUT_SUCCESS
);
214 srcno
= nr
- ics
->offset
;
215 rtas_st(rets
, 1, ics
->irqs
[srcno
].server
);
216 rtas_st(rets
, 2, ics
->irqs
[srcno
].priority
);
219 static void rtas_int_off(PowerPCCPU
*cpu
, SpaprMachineState
*spapr
,
221 uint32_t nargs
, target_ulong args
,
222 uint32_t nret
, target_ulong rets
)
224 ICSState
*ics
= spapr
->ics
;
227 CHECK_EMULATED_XICS_RTAS(spapr
, rets
);
229 if ((nargs
!= 1) || (nret
!= 1)) {
230 rtas_st(rets
, 0, RTAS_OUT_PARAM_ERROR
);
234 rtas_st(rets
, 0, RTAS_OUT_HW_ERROR
);
238 nr
= rtas_ld(args
, 0);
240 if (!ics_valid_irq(ics
, nr
)) {
241 rtas_st(rets
, 0, RTAS_OUT_PARAM_ERROR
);
245 srcno
= nr
- ics
->offset
;
246 ics_write_xive(ics
, srcno
, ics
->irqs
[srcno
].server
, 0xff,
247 ics
->irqs
[srcno
].priority
);
249 rtas_st(rets
, 0, RTAS_OUT_SUCCESS
);
252 static void rtas_int_on(PowerPCCPU
*cpu
, SpaprMachineState
*spapr
,
254 uint32_t nargs
, target_ulong args
,
255 uint32_t nret
, target_ulong rets
)
257 ICSState
*ics
= spapr
->ics
;
260 CHECK_EMULATED_XICS_RTAS(spapr
, rets
);
262 if ((nargs
!= 1) || (nret
!= 1)) {
263 rtas_st(rets
, 0, RTAS_OUT_PARAM_ERROR
);
267 rtas_st(rets
, 0, RTAS_OUT_HW_ERROR
);
271 nr
= rtas_ld(args
, 0);
273 if (!ics_valid_irq(ics
, nr
)) {
274 rtas_st(rets
, 0, RTAS_OUT_PARAM_ERROR
);
278 srcno
= nr
- ics
->offset
;
279 ics_write_xive(ics
, srcno
, ics
->irqs
[srcno
].server
,
280 ics
->irqs
[srcno
].saved_priority
,
281 ics
->irqs
[srcno
].saved_priority
);
283 rtas_st(rets
, 0, RTAS_OUT_SUCCESS
);
286 static void ics_spapr_realize(DeviceState
*dev
, Error
**errp
)
288 ICSState
*ics
= ICS_SPAPR(dev
);
289 ICSStateClass
*icsc
= ICS_GET_CLASS(ics
);
290 Error
*local_err
= NULL
;
292 icsc
->parent_realize(dev
, &local_err
);
294 error_propagate(errp
, local_err
);
298 spapr_rtas_register(RTAS_IBM_SET_XIVE
, "ibm,set-xive", rtas_set_xive
);
299 spapr_rtas_register(RTAS_IBM_GET_XIVE
, "ibm,get-xive", rtas_get_xive
);
300 spapr_rtas_register(RTAS_IBM_INT_OFF
, "ibm,int-off", rtas_int_off
);
301 spapr_rtas_register(RTAS_IBM_INT_ON
, "ibm,int-on", rtas_int_on
);
303 spapr_register_hypercall(H_CPPR
, h_cppr
);
304 spapr_register_hypercall(H_IPI
, h_ipi
);
305 spapr_register_hypercall(H_XIRR
, h_xirr
);
306 spapr_register_hypercall(H_XIRR_X
, h_xirr_x
);
307 spapr_register_hypercall(H_EOI
, h_eoi
);
308 spapr_register_hypercall(H_IPOLL
, h_ipoll
);
311 static void xics_spapr_dt(SpaprInterruptController
*intc
, uint32_t nr_servers
,
312 void *fdt
, uint32_t phandle
)
314 uint32_t interrupt_server_ranges_prop
[] = {
315 0, cpu_to_be32(nr_servers
),
319 _FDT(node
= fdt_add_subnode(fdt
, 0, "interrupt-controller"));
321 _FDT(fdt_setprop_string(fdt
, node
, "device_type",
322 "PowerPC-External-Interrupt-Presentation"));
323 _FDT(fdt_setprop_string(fdt
, node
, "compatible", "IBM,ppc-xicp"));
324 _FDT(fdt_setprop(fdt
, node
, "interrupt-controller", NULL
, 0));
325 _FDT(fdt_setprop(fdt
, node
, "ibm,interrupt-server-ranges",
326 interrupt_server_ranges_prop
,
327 sizeof(interrupt_server_ranges_prop
)));
328 _FDT(fdt_setprop_cell(fdt
, node
, "#interrupt-cells", 2));
329 _FDT(fdt_setprop_cell(fdt
, node
, "linux,phandle", phandle
));
330 _FDT(fdt_setprop_cell(fdt
, node
, "phandle", phandle
));
333 static int xics_spapr_cpu_intc_create(SpaprInterruptController
*intc
,
334 PowerPCCPU
*cpu
, Error
**errp
)
336 ICSState
*ics
= ICS_SPAPR(intc
);
338 SpaprCpuState
*spapr_cpu
= spapr_cpu_state(cpu
);
340 obj
= icp_create(OBJECT(cpu
), TYPE_ICP
, ics
->xics
, errp
);
345 spapr_cpu
->icp
= ICP(obj
);
349 static void xics_spapr_cpu_intc_reset(SpaprInterruptController
*intc
,
352 icp_reset(spapr_cpu_state(cpu
)->icp
);
355 static int xics_spapr_claim_irq(SpaprInterruptController
*intc
, int irq
,
356 bool lsi
, Error
**errp
)
358 ICSState
*ics
= ICS_SPAPR(intc
);
361 assert(ics_valid_irq(ics
, irq
));
363 if (!ics_irq_free(ics
, irq
- ics
->offset
)) {
364 error_setg(errp
, "IRQ %d is not free", irq
);
368 ics_set_irq_type(ics
, irq
- ics
->offset
, lsi
);
372 static void xics_spapr_free_irq(SpaprInterruptController
*intc
, int irq
)
374 ICSState
*ics
= ICS_SPAPR(intc
);
375 uint32_t srcno
= irq
- ics
->offset
;
377 assert(ics_valid_irq(ics
, irq
));
379 memset(&ics
->irqs
[srcno
], 0, sizeof(ICSIRQState
));
382 static void xics_spapr_set_irq(SpaprInterruptController
*intc
, int irq
, int val
)
384 ICSState
*ics
= ICS_SPAPR(intc
);
385 uint32_t srcno
= irq
- ics
->offset
;
387 ics_set_irq(ics
, srcno
, val
);
390 static void xics_spapr_print_info(SpaprInterruptController
*intc
, Monitor
*mon
)
392 ICSState
*ics
= ICS_SPAPR(intc
);
396 PowerPCCPU
*cpu
= POWERPC_CPU(cs
);
398 icp_pic_print_info(spapr_cpu_state(cpu
)->icp
, mon
);
401 ics_pic_print_info(ics
, mon
);
404 static int xics_spapr_post_load(SpaprInterruptController
*intc
, int version_id
)
406 if (!kvm_irqchip_in_kernel()) {
409 PowerPCCPU
*cpu
= POWERPC_CPU(cs
);
410 icp_resend(spapr_cpu_state(cpu
)->icp
);
416 static int xics_spapr_activate(SpaprInterruptController
*intc
, Error
**errp
)
419 return spapr_irq_init_kvm(xics_kvm_connect
, intc
, errp
);
424 static void xics_spapr_deactivate(SpaprInterruptController
*intc
)
426 if (kvm_irqchip_in_kernel()) {
427 xics_kvm_disconnect(intc
);
431 static void ics_spapr_class_init(ObjectClass
*klass
, void *data
)
433 DeviceClass
*dc
= DEVICE_CLASS(klass
);
434 ICSStateClass
*isc
= ICS_CLASS(klass
);
435 SpaprInterruptControllerClass
*sicc
= SPAPR_INTC_CLASS(klass
);
437 device_class_set_parent_realize(dc
, ics_spapr_realize
,
438 &isc
->parent_realize
);
439 sicc
->activate
= xics_spapr_activate
;
440 sicc
->deactivate
= xics_spapr_deactivate
;
441 sicc
->cpu_intc_create
= xics_spapr_cpu_intc_create
;
442 sicc
->cpu_intc_reset
= xics_spapr_cpu_intc_reset
;
443 sicc
->claim_irq
= xics_spapr_claim_irq
;
444 sicc
->free_irq
= xics_spapr_free_irq
;
445 sicc
->set_irq
= xics_spapr_set_irq
;
446 sicc
->print_info
= xics_spapr_print_info
;
447 sicc
->dt
= xics_spapr_dt
;
448 sicc
->post_load
= xics_spapr_post_load
;
451 static const TypeInfo ics_spapr_info
= {
452 .name
= TYPE_ICS_SPAPR
,
454 .class_init
= ics_spapr_class_init
,
455 .interfaces
= (InterfaceInfo
[]) {
461 static void xics_spapr_register_types(void)
463 type_register_static(&ics_spapr_info
);
466 type_init(xics_spapr_register_types
)