4 * Copyright (c) 2004 Jocelyn Mayer
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
26 #include <linux/slab.h>
27 #include <linux/mutex.h>
28 #include <linux/kvm_host.h>
29 #include <linux/errno.h>
31 #include <linux/anon_inodes.h>
32 #include <linux/uaccess.h>
34 #include <asm/kvm_para.h>
35 #include <asm/kvm_host.h>
36 #include <asm/kvm_ppc.h>
37 #include <kvm/iodev.h>
44 #define MAX_IRQ (MAX_SRC + MAX_IPI + MAX_TMR)
45 #define VID 0x03 /* MPIC version ID */
47 /* OpenPIC capability flags */
48 #define OPENPIC_FLAG_IDR_CRIT (1 << 0)
49 #define OPENPIC_FLAG_ILR (2 << 0)
51 /* OpenPIC address map */
52 #define OPENPIC_REG_SIZE 0x40000
53 #define OPENPIC_GLB_REG_START 0x0
54 #define OPENPIC_GLB_REG_SIZE 0x10F0
55 #define OPENPIC_TMR_REG_START 0x10F0
56 #define OPENPIC_TMR_REG_SIZE 0x220
57 #define OPENPIC_MSI_REG_START 0x1600
58 #define OPENPIC_MSI_REG_SIZE 0x200
59 #define OPENPIC_SUMMARY_REG_START 0x3800
60 #define OPENPIC_SUMMARY_REG_SIZE 0x800
61 #define OPENPIC_SRC_REG_START 0x10000
62 #define OPENPIC_SRC_REG_SIZE (MAX_SRC * 0x20)
63 #define OPENPIC_CPU_REG_START 0x20000
64 #define OPENPIC_CPU_REG_SIZE (0x100 + ((MAX_CPU - 1) * 0x1000))
66 struct fsl_mpic_info {
70 static struct fsl_mpic_info fsl_mpic_20 = {
74 static struct fsl_mpic_info fsl_mpic_42 = {
78 #define FRR_NIRQ_SHIFT 16
79 #define FRR_NCPU_SHIFT 8
80 #define FRR_VID_SHIFT 0
82 #define VID_REVISION_1_2 2
83 #define VID_REVISION_1_3 3
85 #define VIR_GENERIC 0x00000000 /* Generic Vendor ID */
87 #define GCR_RESET 0x80000000
88 #define GCR_MODE_PASS 0x00000000
89 #define GCR_MODE_MIXED 0x20000000
90 #define GCR_MODE_PROXY 0x60000000
92 #define TBCR_CI 0x80000000 /* count inhibit */
93 #define TCCR_TOG 0x80000000 /* toggles when decrement to zero */
95 #define IDR_EP_SHIFT 31
96 #define IDR_EP_MASK (1 << IDR_EP_SHIFT)
97 #define IDR_CI0_SHIFT 30
98 #define IDR_CI1_SHIFT 29
99 #define IDR_P1_SHIFT 1
100 #define IDR_P0_SHIFT 0
102 #define ILR_INTTGT_MASK 0x000000ff
103 #define ILR_INTTGT_INT 0x00
104 #define ILR_INTTGT_CINT 0x01 /* critical */
105 #define ILR_INTTGT_MCP 0x02 /* machine check */
106 #define NUM_OUTPUTS 3
108 #define MSIIR_OFFSET 0x140
109 #define MSIIR_SRS_SHIFT 29
110 #define MSIIR_SRS_MASK (0x7 << MSIIR_SRS_SHIFT)
111 #define MSIIR_IBS_SHIFT 24
112 #define MSIIR_IBS_MASK (0x1f << MSIIR_IBS_SHIFT)
114 static int get_current_cpu(void)
116 #if defined(CONFIG_KVM) && defined(CONFIG_BOOKE)
117 struct kvm_vcpu *vcpu = current->thread.kvm_vcpu;
118 return vcpu ? vcpu->arch.irq_cpu_id : -1;
125 static int openpic_cpu_write_internal(void *opaque, gpa_t addr,
127 static int openpic_cpu_read_internal(void *opaque, gpa_t addr,
129 static inline void write_IRQreg_idr(struct openpic *opp, int n_IRQ,
134 IRQ_TYPE_FSLINT, /* FSL internal interrupt -- level only */
135 IRQ_TYPE_FSLSPECIAL, /* FSL timer/IPI interrupt, edge, no polarity */
139 /* Round up to the nearest 64 IRQs so that the queue length
140 * won't change when moving between 32 and 64 bit hosts.
142 unsigned long queue[BITS_TO_LONGS((MAX_IRQ + 63) & ~63)];
148 uint32_t ivpr; /* IRQ vector/priority register */
149 uint32_t idr; /* IRQ destination register */
150 uint32_t destmask; /* bitmap of CPU destinations */
152 int output; /* IRQ level, e.g. ILR_INTTGT_INT */
153 int pending; /* TRUE if IRQ is pending */
155 bool level:1; /* level-triggered */
156 bool nomask:1; /* critical interrupts ignore mask on some FSL MPICs */
159 #define IVPR_MASK_SHIFT 31
160 #define IVPR_MASK_MASK (1 << IVPR_MASK_SHIFT)
161 #define IVPR_ACTIVITY_SHIFT 30
162 #define IVPR_ACTIVITY_MASK (1 << IVPR_ACTIVITY_SHIFT)
163 #define IVPR_MODE_SHIFT 29
164 #define IVPR_MODE_MASK (1 << IVPR_MODE_SHIFT)
165 #define IVPR_POLARITY_SHIFT 23
166 #define IVPR_POLARITY_MASK (1 << IVPR_POLARITY_SHIFT)
167 #define IVPR_SENSE_SHIFT 22
168 #define IVPR_SENSE_MASK (1 << IVPR_SENSE_SHIFT)
170 #define IVPR_PRIORITY_MASK (0xF << 16)
171 #define IVPR_PRIORITY(_ivprr_) ((int)(((_ivprr_) & IVPR_PRIORITY_MASK) >> 16))
172 #define IVPR_VECTOR(opp, _ivprr_) ((_ivprr_) & (opp)->vector_mask)
174 /* IDR[EP/CI] are only for FSL MPIC prior to v4.0 */
175 #define IDR_EP 0x80000000 /* external pin */
176 #define IDR_CI 0x40000000 /* critical interrupt */
179 struct kvm_vcpu *vcpu;
181 int32_t ctpr; /* CPU current task priority */
182 struct irq_queue raised;
183 struct irq_queue servicing;
185 /* Count of IRQ sources asserting on non-INT outputs */
186 uint32_t outputs_active[NUM_OUTPUTS];
189 #define MAX_MMIO_REGIONS 10
193 struct kvm_device *dev;
194 struct kvm_io_device mmio;
195 const struct mem_reg *mmio_regions[MAX_MMIO_REGIONS];
196 int num_mmio_regions;
201 /* Behavior control */
202 struct fsl_mpic_info *fsl;
207 uint32_t vir; /* Vendor identification register */
208 uint32_t vector_mask;
213 uint32_t mpic_mode_mask;
215 /* Global registers */
216 uint32_t frr; /* Feature reporting register */
217 uint32_t gcr; /* Global configuration register */
218 uint32_t pir; /* Processor initialization register */
219 uint32_t spve; /* Spurious vector register */
220 uint32_t tfrr; /* Timer frequency reporting register */
221 /* Source registers */
222 struct irq_source src[MAX_IRQ];
223 /* Local registers per output pin */
224 struct irq_dest dst[MAX_CPU];
226 /* Timer registers */
228 uint32_t tccr; /* Global timer current count register */
229 uint32_t tbcr; /* Global timer base count register */
231 /* Shared MSI registers */
233 uint32_t msir; /* Shared Message Signaled Interrupt Register */
242 static void mpic_irq_raise(struct openpic *opp, struct irq_dest *dst,
245 struct kvm_interrupt irq = {
246 .irq = KVM_INTERRUPT_SET_LEVEL,
250 pr_debug("%s: destination cpu %d does not exist\n",
251 __func__, (int)(dst - &opp->dst[0]));
255 pr_debug("%s: cpu %d output %d\n", __func__, dst->vcpu->arch.irq_cpu_id,
258 if (output != ILR_INTTGT_INT) /* TODO */
261 kvm_vcpu_ioctl_interrupt(dst->vcpu, &irq);
264 static void mpic_irq_lower(struct openpic *opp, struct irq_dest *dst,
268 pr_debug("%s: destination cpu %d does not exist\n",
269 __func__, (int)(dst - &opp->dst[0]));
273 pr_debug("%s: cpu %d output %d\n", __func__, dst->vcpu->arch.irq_cpu_id,
276 if (output != ILR_INTTGT_INT) /* TODO */
279 kvmppc_core_dequeue_external(dst->vcpu);
282 static inline void IRQ_setbit(struct irq_queue *q, int n_IRQ)
284 set_bit(n_IRQ, q->queue);
287 static inline void IRQ_resetbit(struct irq_queue *q, int n_IRQ)
289 clear_bit(n_IRQ, q->queue);
292 static void IRQ_check(struct openpic *opp, struct irq_queue *q)
299 irq = find_next_bit(q->queue, opp->max_irq, irq + 1);
300 if (irq == opp->max_irq)
303 pr_debug("IRQ_check: irq %d set ivpr_pr=%d pr=%d\n",
304 irq, IVPR_PRIORITY(opp->src[irq].ivpr), priority);
306 if (IVPR_PRIORITY(opp->src[irq].ivpr) > priority) {
308 priority = IVPR_PRIORITY(opp->src[irq].ivpr);
313 q->priority = priority;
316 static int IRQ_get_next(struct openpic *opp, struct irq_queue *q)
324 static void IRQ_local_pipe(struct openpic *opp, int n_CPU, int n_IRQ,
325 bool active, bool was_active)
327 struct irq_dest *dst;
328 struct irq_source *src;
331 dst = &opp->dst[n_CPU];
332 src = &opp->src[n_IRQ];
334 pr_debug("%s: IRQ %d active %d was %d\n",
335 __func__, n_IRQ, active, was_active);
337 if (src->output != ILR_INTTGT_INT) {
338 pr_debug("%s: output %d irq %d active %d was %d count %d\n",
339 __func__, src->output, n_IRQ, active, was_active,
340 dst->outputs_active[src->output]);
342 /* On Freescale MPIC, critical interrupts ignore priority,
343 * IACK, EOI, etc. Before MPIC v4.1 they also ignore
348 dst->outputs_active[src->output]++ == 0) {
349 pr_debug("%s: Raise OpenPIC output %d cpu %d irq %d\n",
350 __func__, src->output, n_CPU, n_IRQ);
351 mpic_irq_raise(opp, dst, src->output);
355 --dst->outputs_active[src->output] == 0) {
356 pr_debug("%s: Lower OpenPIC output %d cpu %d irq %d\n",
357 __func__, src->output, n_CPU, n_IRQ);
358 mpic_irq_lower(opp, dst, src->output);
365 priority = IVPR_PRIORITY(src->ivpr);
367 /* Even if the interrupt doesn't have enough priority,
368 * it is still raised, in case ctpr is lowered later.
371 IRQ_setbit(&dst->raised, n_IRQ);
373 IRQ_resetbit(&dst->raised, n_IRQ);
375 IRQ_check(opp, &dst->raised);
377 if (active && priority <= dst->ctpr) {
378 pr_debug("%s: IRQ %d priority %d too low for ctpr %d on CPU %d\n",
379 __func__, n_IRQ, priority, dst->ctpr, n_CPU);
384 if (IRQ_get_next(opp, &dst->servicing) >= 0 &&
385 priority <= dst->servicing.priority) {
386 pr_debug("%s: IRQ %d is hidden by servicing IRQ %d on CPU %d\n",
387 __func__, n_IRQ, dst->servicing.next, n_CPU);
389 pr_debug("%s: Raise OpenPIC INT output cpu %d irq %d/%d\n",
390 __func__, n_CPU, n_IRQ, dst->raised.next);
391 mpic_irq_raise(opp, dst, ILR_INTTGT_INT);
394 IRQ_get_next(opp, &dst->servicing);
395 if (dst->raised.priority > dst->ctpr &&
396 dst->raised.priority > dst->servicing.priority) {
397 pr_debug("%s: IRQ %d inactive, IRQ %d prio %d above %d/%d, CPU %d\n",
398 __func__, n_IRQ, dst->raised.next,
399 dst->raised.priority, dst->ctpr,
400 dst->servicing.priority, n_CPU);
401 /* IRQ line stays asserted */
403 pr_debug("%s: IRQ %d inactive, current prio %d/%d, CPU %d\n",
404 __func__, n_IRQ, dst->ctpr,
405 dst->servicing.priority, n_CPU);
406 mpic_irq_lower(opp, dst, ILR_INTTGT_INT);
411 /* update pic state because registers for n_IRQ have changed value */
412 static void openpic_update_irq(struct openpic *opp, int n_IRQ)
414 struct irq_source *src;
415 bool active, was_active;
418 src = &opp->src[n_IRQ];
419 active = src->pending;
421 if ((src->ivpr & IVPR_MASK_MASK) && !src->nomask) {
422 /* Interrupt source is disabled */
423 pr_debug("%s: IRQ %d is disabled\n", __func__, n_IRQ);
427 was_active = !!(src->ivpr & IVPR_ACTIVITY_MASK);
430 * We don't have a similar check for already-active because
431 * ctpr may have changed and we need to withdraw the interrupt.
433 if (!active && !was_active) {
434 pr_debug("%s: IRQ %d is already inactive\n", __func__, n_IRQ);
439 src->ivpr |= IVPR_ACTIVITY_MASK;
441 src->ivpr &= ~IVPR_ACTIVITY_MASK;
443 if (src->destmask == 0) {
445 pr_debug("%s: IRQ %d has no target\n", __func__, n_IRQ);
449 if (src->destmask == (1 << src->last_cpu)) {
450 /* Only one CPU is allowed to receive this IRQ */
451 IRQ_local_pipe(opp, src->last_cpu, n_IRQ, active, was_active);
452 } else if (!(src->ivpr & IVPR_MODE_MASK)) {
453 /* Directed delivery mode */
454 for (i = 0; i < opp->nb_cpus; i++) {
455 if (src->destmask & (1 << i)) {
456 IRQ_local_pipe(opp, i, n_IRQ, active,
461 /* Distributed delivery mode */
462 for (i = src->last_cpu + 1; i != src->last_cpu; i++) {
463 if (i == opp->nb_cpus)
466 if (src->destmask & (1 << i)) {
467 IRQ_local_pipe(opp, i, n_IRQ, active,
476 static void openpic_set_irq(void *opaque, int n_IRQ, int level)
478 struct openpic *opp = opaque;
479 struct irq_source *src;
481 if (n_IRQ >= MAX_IRQ) {
482 WARN_ONCE(1, "%s: IRQ %d out of range\n", __func__, n_IRQ);
486 src = &opp->src[n_IRQ];
487 pr_debug("openpic: set irq %d = %d ivpr=0x%08x\n",
488 n_IRQ, level, src->ivpr);
490 /* level-sensitive irq */
491 src->pending = level;
492 openpic_update_irq(opp, n_IRQ);
494 /* edge-sensitive irq */
497 openpic_update_irq(opp, n_IRQ);
500 if (src->output != ILR_INTTGT_INT) {
501 /* Edge-triggered interrupts shouldn't be used
502 * with non-INT delivery, but just in case,
503 * try to make it do something sane rather than
504 * cause an interrupt storm. This is close to
505 * what you'd probably see happen in real hardware.
508 openpic_update_irq(opp, n_IRQ);
513 static void openpic_reset(struct openpic *opp)
517 opp->gcr = GCR_RESET;
518 /* Initialise controller registers */
519 opp->frr = ((opp->nb_irqs - 1) << FRR_NIRQ_SHIFT) |
520 (opp->vid << FRR_VID_SHIFT);
523 opp->spve = -1 & opp->vector_mask;
524 opp->tfrr = opp->tfrr_reset;
525 /* Initialise IRQ sources */
526 for (i = 0; i < opp->max_irq; i++) {
527 opp->src[i].ivpr = opp->ivpr_reset;
529 switch (opp->src[i].type) {
530 case IRQ_TYPE_NORMAL:
532 !!(opp->ivpr_reset & IVPR_SENSE_MASK);
535 case IRQ_TYPE_FSLINT:
536 opp->src[i].ivpr |= IVPR_POLARITY_MASK;
539 case IRQ_TYPE_FSLSPECIAL:
543 write_IRQreg_idr(opp, i, opp->idr_reset);
545 /* Initialise IRQ destinations */
546 for (i = 0; i < MAX_CPU; i++) {
547 opp->dst[i].ctpr = 15;
548 memset(&opp->dst[i].raised, 0, sizeof(struct irq_queue));
549 opp->dst[i].raised.next = -1;
550 memset(&opp->dst[i].servicing, 0, sizeof(struct irq_queue));
551 opp->dst[i].servicing.next = -1;
553 /* Initialise timers */
554 for (i = 0; i < MAX_TMR; i++) {
555 opp->timers[i].tccr = 0;
556 opp->timers[i].tbcr = TBCR_CI;
558 /* Go out of RESET state */
562 static inline uint32_t read_IRQreg_idr(struct openpic *opp, int n_IRQ)
564 return opp->src[n_IRQ].idr;
567 static inline uint32_t read_IRQreg_ilr(struct openpic *opp, int n_IRQ)
569 if (opp->flags & OPENPIC_FLAG_ILR)
570 return opp->src[n_IRQ].output;
575 static inline uint32_t read_IRQreg_ivpr(struct openpic *opp, int n_IRQ)
577 return opp->src[n_IRQ].ivpr;
580 static inline void write_IRQreg_idr(struct openpic *opp, int n_IRQ,
583 struct irq_source *src = &opp->src[n_IRQ];
584 uint32_t normal_mask = (1UL << opp->nb_cpus) - 1;
585 uint32_t crit_mask = 0;
586 uint32_t mask = normal_mask;
587 int crit_shift = IDR_EP_SHIFT - opp->nb_cpus;
590 if (opp->flags & OPENPIC_FLAG_IDR_CRIT) {
591 crit_mask = mask << crit_shift;
592 mask |= crit_mask | IDR_EP;
595 src->idr = val & mask;
596 pr_debug("Set IDR %d to 0x%08x\n", n_IRQ, src->idr);
598 if (opp->flags & OPENPIC_FLAG_IDR_CRIT) {
599 if (src->idr & crit_mask) {
600 if (src->idr & normal_mask) {
601 pr_debug("%s: IRQ configured for multiple output types, using critical\n",
605 src->output = ILR_INTTGT_CINT;
609 for (i = 0; i < opp->nb_cpus; i++) {
610 int n_ci = IDR_CI0_SHIFT - i;
612 if (src->idr & (1UL << n_ci))
613 src->destmask |= 1UL << i;
616 src->output = ILR_INTTGT_INT;
618 src->destmask = src->idr & normal_mask;
621 src->destmask = src->idr;
625 static inline void write_IRQreg_ilr(struct openpic *opp, int n_IRQ,
628 if (opp->flags & OPENPIC_FLAG_ILR) {
629 struct irq_source *src = &opp->src[n_IRQ];
631 src->output = val & ILR_INTTGT_MASK;
632 pr_debug("Set ILR %d to 0x%08x, output %d\n", n_IRQ, src->idr,
635 /* TODO: on MPIC v4.0 only, set nomask for non-INT */
639 static inline void write_IRQreg_ivpr(struct openpic *opp, int n_IRQ,
644 /* NOTE when implementing newer FSL MPIC models: starting with v4.0,
645 * the polarity bit is read-only on internal interrupts.
647 mask = IVPR_MASK_MASK | IVPR_PRIORITY_MASK | IVPR_SENSE_MASK |
648 IVPR_POLARITY_MASK | opp->vector_mask;
650 /* ACTIVITY bit is read-only */
651 opp->src[n_IRQ].ivpr =
652 (opp->src[n_IRQ].ivpr & IVPR_ACTIVITY_MASK) | (val & mask);
654 /* For FSL internal interrupts, The sense bit is reserved and zero,
655 * and the interrupt is always level-triggered. Timers and IPIs
656 * have no sense or polarity bits, and are edge-triggered.
658 switch (opp->src[n_IRQ].type) {
659 case IRQ_TYPE_NORMAL:
660 opp->src[n_IRQ].level =
661 !!(opp->src[n_IRQ].ivpr & IVPR_SENSE_MASK);
664 case IRQ_TYPE_FSLINT:
665 opp->src[n_IRQ].ivpr &= ~IVPR_SENSE_MASK;
668 case IRQ_TYPE_FSLSPECIAL:
669 opp->src[n_IRQ].ivpr &= ~(IVPR_POLARITY_MASK | IVPR_SENSE_MASK);
673 openpic_update_irq(opp, n_IRQ);
674 pr_debug("Set IVPR %d to 0x%08x -> 0x%08x\n", n_IRQ, val,
675 opp->src[n_IRQ].ivpr);
678 static void openpic_gcr_write(struct openpic *opp, uint64_t val)
680 if (val & GCR_RESET) {
685 opp->gcr &= ~opp->mpic_mode_mask;
686 opp->gcr |= val & opp->mpic_mode_mask;
689 static int openpic_gbl_write(void *opaque, gpa_t addr, u32 val)
691 struct openpic *opp = opaque;
694 pr_debug("%s: addr %#llx <= %08x\n", __func__, addr, val);
699 case 0x00: /* Block Revision Register1 (BRR1) is Readonly */
709 err = openpic_cpu_write_internal(opp, addr, val,
712 case 0x1000: /* FRR */
714 case 0x1020: /* GCR */
715 openpic_gcr_write(opp, val);
717 case 0x1080: /* VIR */
719 case 0x1090: /* PIR */
721 * This register is used to reset a CPU core --
722 * let userspace handle it.
726 case 0x10A0: /* IPI_IVPR */
731 idx = (addr - 0x10A0) >> 4;
732 write_IRQreg_ivpr(opp, opp->irq_ipi0 + idx, val);
735 case 0x10E0: /* SPVE */
736 opp->spve = val & opp->vector_mask;
745 static int openpic_gbl_read(void *opaque, gpa_t addr, u32 *ptr)
747 struct openpic *opp = opaque;
751 pr_debug("%s: addr %#llx\n", __func__, addr);
757 case 0x1000: /* FRR */
759 retval |= (opp->nb_cpus - 1) << FRR_NCPU_SHIFT;
761 case 0x1020: /* GCR */
764 case 0x1080: /* VIR */
767 case 0x1090: /* PIR */
770 case 0x00: /* Block Revision Register1 (BRR1) */
781 err = openpic_cpu_read_internal(opp, addr,
782 &retval, get_current_cpu());
784 case 0x10A0: /* IPI_IVPR */
790 idx = (addr - 0x10A0) >> 4;
791 retval = read_IRQreg_ivpr(opp, opp->irq_ipi0 + idx);
794 case 0x10E0: /* SPVE */
802 pr_debug("%s: => 0x%08x\n", __func__, retval);
807 static int openpic_tmr_write(void *opaque, gpa_t addr, u32 val)
809 struct openpic *opp = opaque;
814 pr_debug("%s: addr %#llx <= %08x\n", __func__, addr, val);
818 if (addr == 0x10f0) {
824 idx = (addr >> 6) & 0x3;
827 switch (addr & 0x30) {
828 case 0x00: /* TCCR */
830 case 0x10: /* TBCR */
831 if ((opp->timers[idx].tccr & TCCR_TOG) != 0 &&
832 (val & TBCR_CI) == 0 &&
833 (opp->timers[idx].tbcr & TBCR_CI) != 0)
834 opp->timers[idx].tccr &= ~TCCR_TOG;
836 opp->timers[idx].tbcr = val;
838 case 0x20: /* TVPR */
839 write_IRQreg_ivpr(opp, opp->irq_tim0 + idx, val);
842 write_IRQreg_idr(opp, opp->irq_tim0 + idx, val);
849 static int openpic_tmr_read(void *opaque, gpa_t addr, u32 *ptr)
851 struct openpic *opp = opaque;
852 uint32_t retval = -1;
855 pr_debug("%s: addr %#llx\n", __func__, addr);
859 idx = (addr >> 6) & 0x3;
866 switch (addr & 0x30) {
867 case 0x00: /* TCCR */
868 retval = opp->timers[idx].tccr;
870 case 0x10: /* TBCR */
871 retval = opp->timers[idx].tbcr;
873 case 0x20: /* TIPV */
874 retval = read_IRQreg_ivpr(opp, opp->irq_tim0 + idx);
876 case 0x30: /* TIDE (TIDR) */
877 retval = read_IRQreg_idr(opp, opp->irq_tim0 + idx);
882 pr_debug("%s: => 0x%08x\n", __func__, retval);
887 static int openpic_src_write(void *opaque, gpa_t addr, u32 val)
889 struct openpic *opp = opaque;
892 pr_debug("%s: addr %#llx <= %08x\n", __func__, addr, val);
894 addr = addr & 0xffff;
897 switch (addr & 0x1f) {
899 write_IRQreg_ivpr(opp, idx, val);
902 write_IRQreg_idr(opp, idx, val);
905 write_IRQreg_ilr(opp, idx, val);
912 static int openpic_src_read(void *opaque, gpa_t addr, u32 *ptr)
914 struct openpic *opp = opaque;
918 pr_debug("%s: addr %#llx\n", __func__, addr);
921 addr = addr & 0xffff;
924 switch (addr & 0x1f) {
926 retval = read_IRQreg_ivpr(opp, idx);
929 retval = read_IRQreg_idr(opp, idx);
932 retval = read_IRQreg_ilr(opp, idx);
936 pr_debug("%s: => 0x%08x\n", __func__, retval);
941 static int openpic_msi_write(void *opaque, gpa_t addr, u32 val)
943 struct openpic *opp = opaque;
944 int idx = opp->irq_msi;
947 pr_debug("%s: addr %#llx <= 0x%08x\n", __func__, addr, val);
953 srs = val >> MSIIR_SRS_SHIFT;
955 ibs = (val & MSIIR_IBS_MASK) >> MSIIR_IBS_SHIFT;
956 opp->msi[srs].msir |= 1 << ibs;
957 openpic_set_irq(opp, idx, 1);
960 /* most registers are read-only, thus ignored */
967 static int openpic_msi_read(void *opaque, gpa_t addr, u32 *ptr)
969 struct openpic *opp = opaque;
973 pr_debug("%s: addr %#llx\n", __func__, addr);
987 case 0x70: /* MSIRs */
988 r = opp->msi[srs].msir;
990 opp->msi[srs].msir = 0;
991 openpic_set_irq(opp, opp->irq_msi + srs, 0);
993 case 0x120: /* MSISR */
994 for (i = 0; i < MAX_MSI; i++)
995 r |= (opp->msi[i].msir ? 1 : 0) << i;
999 pr_debug("%s: => 0x%08x\n", __func__, r);
1004 static int openpic_summary_read(void *opaque, gpa_t addr, u32 *ptr)
1008 pr_debug("%s: addr %#llx\n", __func__, addr);
1010 /* TODO: EISR/EIMR */
1016 static int openpic_summary_write(void *opaque, gpa_t addr, u32 val)
1018 pr_debug("%s: addr %#llx <= 0x%08x\n", __func__, addr, val);
1020 /* TODO: EISR/EIMR */
1024 static int openpic_cpu_write_internal(void *opaque, gpa_t addr,
1027 struct openpic *opp = opaque;
1028 struct irq_source *src;
1029 struct irq_dest *dst;
1032 pr_debug("%s: cpu %d addr %#llx <= 0x%08x\n", __func__, idx,
1041 dst = &opp->dst[idx];
1044 case 0x40: /* IPIDR */
1048 idx = (addr - 0x40) >> 4;
1049 /* we use IDE as mask which CPUs to deliver the IPI to still. */
1050 opp->src[opp->irq_ipi0 + idx].destmask |= val;
1051 openpic_set_irq(opp, opp->irq_ipi0 + idx, 1);
1052 openpic_set_irq(opp, opp->irq_ipi0 + idx, 0);
1054 case 0x80: /* CTPR */
1055 dst->ctpr = val & 0x0000000F;
1057 pr_debug("%s: set CPU %d ctpr to %d, raised %d servicing %d\n",
1058 __func__, idx, dst->ctpr, dst->raised.priority,
1059 dst->servicing.priority);
1061 if (dst->raised.priority <= dst->ctpr) {
1062 pr_debug("%s: Lower OpenPIC INT output cpu %d due to ctpr\n",
1064 mpic_irq_lower(opp, dst, ILR_INTTGT_INT);
1065 } else if (dst->raised.priority > dst->servicing.priority) {
1066 pr_debug("%s: Raise OpenPIC INT output cpu %d irq %d\n",
1067 __func__, idx, dst->raised.next);
1068 mpic_irq_raise(opp, dst, ILR_INTTGT_INT);
1072 case 0x90: /* WHOAMI */
1073 /* Read-only register */
1075 case 0xA0: /* IACK */
1076 /* Read-only register */
1078 case 0xB0: { /* EOI */
1082 s_IRQ = IRQ_get_next(opp, &dst->servicing);
1085 pr_debug("%s: EOI with no interrupt in service\n",
1090 IRQ_resetbit(&dst->servicing, s_IRQ);
1091 /* Notify listeners that the IRQ is over */
1093 /* Set up next servicing IRQ */
1094 s_IRQ = IRQ_get_next(opp, &dst->servicing);
1095 /* Check queued interrupts. */
1096 n_IRQ = IRQ_get_next(opp, &dst->raised);
1097 src = &opp->src[n_IRQ];
1100 IVPR_PRIORITY(src->ivpr) > dst->servicing.priority)) {
1101 pr_debug("Raise OpenPIC INT output cpu %d irq %d\n",
1103 mpic_irq_raise(opp, dst, ILR_INTTGT_INT);
1106 spin_unlock(&opp->lock);
1107 kvm_notify_acked_irq(opp->kvm, 0, notify_eoi);
1108 spin_lock(&opp->lock);
1119 static int openpic_cpu_write(void *opaque, gpa_t addr, u32 val)
1121 struct openpic *opp = opaque;
1123 return openpic_cpu_write_internal(opp, addr, val,
1124 (addr & 0x1f000) >> 12);
1127 static uint32_t openpic_iack(struct openpic *opp, struct irq_dest *dst,
1130 struct irq_source *src;
1133 pr_debug("Lower OpenPIC INT output\n");
1134 mpic_irq_lower(opp, dst, ILR_INTTGT_INT);
1136 irq = IRQ_get_next(opp, &dst->raised);
1137 pr_debug("IACK: irq=%d\n", irq);
1140 /* No more interrupt pending */
1143 src = &opp->src[irq];
1144 if (!(src->ivpr & IVPR_ACTIVITY_MASK) ||
1145 !(IVPR_PRIORITY(src->ivpr) > dst->ctpr)) {
1146 pr_err("%s: bad raised IRQ %d ctpr %d ivpr 0x%08x\n",
1147 __func__, irq, dst->ctpr, src->ivpr);
1148 openpic_update_irq(opp, irq);
1151 /* IRQ enter servicing state */
1152 IRQ_setbit(&dst->servicing, irq);
1153 retval = IVPR_VECTOR(opp, src->ivpr);
1157 /* edge-sensitive IRQ */
1158 src->ivpr &= ~IVPR_ACTIVITY_MASK;
1160 IRQ_resetbit(&dst->raised, irq);
1163 if ((irq >= opp->irq_ipi0) && (irq < (opp->irq_ipi0 + MAX_IPI))) {
1164 src->destmask &= ~(1 << cpu);
1165 if (src->destmask && !src->level) {
1166 /* trigger on CPUs that didn't know about it yet */
1167 openpic_set_irq(opp, irq, 1);
1168 openpic_set_irq(opp, irq, 0);
1169 /* if all CPUs knew about it, set active bit again */
1170 src->ivpr |= IVPR_ACTIVITY_MASK;
1177 void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu)
1179 struct openpic *opp = vcpu->arch.mpic;
1180 int cpu = vcpu->arch.irq_cpu_id;
1181 unsigned long flags;
1183 spin_lock_irqsave(&opp->lock, flags);
1185 if ((opp->gcr & opp->mpic_mode_mask) == GCR_MODE_PROXY)
1186 kvmppc_set_epr(vcpu, openpic_iack(opp, &opp->dst[cpu], cpu));
1188 spin_unlock_irqrestore(&opp->lock, flags);
1191 static int openpic_cpu_read_internal(void *opaque, gpa_t addr,
1194 struct openpic *opp = opaque;
1195 struct irq_dest *dst;
1198 pr_debug("%s: cpu %d addr %#llx\n", __func__, idx, addr);
1199 retval = 0xFFFFFFFF;
1207 dst = &opp->dst[idx];
1210 case 0x80: /* CTPR */
1213 case 0x90: /* WHOAMI */
1216 case 0xA0: /* IACK */
1217 retval = openpic_iack(opp, dst, idx);
1219 case 0xB0: /* EOI */
1225 pr_debug("%s: => 0x%08x\n", __func__, retval);
1232 static int openpic_cpu_read(void *opaque, gpa_t addr, u32 *ptr)
1234 struct openpic *opp = opaque;
1236 return openpic_cpu_read_internal(opp, addr, ptr,
1237 (addr & 0x1f000) >> 12);
1241 int (*read)(void *opaque, gpa_t addr, u32 *ptr);
1242 int (*write)(void *opaque, gpa_t addr, u32 val);
1247 static const struct mem_reg openpic_gbl_mmio = {
1248 .write = openpic_gbl_write,
1249 .read = openpic_gbl_read,
1250 .start_addr = OPENPIC_GLB_REG_START,
1251 .size = OPENPIC_GLB_REG_SIZE,
1254 static const struct mem_reg openpic_tmr_mmio = {
1255 .write = openpic_tmr_write,
1256 .read = openpic_tmr_read,
1257 .start_addr = OPENPIC_TMR_REG_START,
1258 .size = OPENPIC_TMR_REG_SIZE,
1261 static const struct mem_reg openpic_cpu_mmio = {
1262 .write = openpic_cpu_write,
1263 .read = openpic_cpu_read,
1264 .start_addr = OPENPIC_CPU_REG_START,
1265 .size = OPENPIC_CPU_REG_SIZE,
1268 static const struct mem_reg openpic_src_mmio = {
1269 .write = openpic_src_write,
1270 .read = openpic_src_read,
1271 .start_addr = OPENPIC_SRC_REG_START,
1272 .size = OPENPIC_SRC_REG_SIZE,
1275 static const struct mem_reg openpic_msi_mmio = {
1276 .read = openpic_msi_read,
1277 .write = openpic_msi_write,
1278 .start_addr = OPENPIC_MSI_REG_START,
1279 .size = OPENPIC_MSI_REG_SIZE,
1282 static const struct mem_reg openpic_summary_mmio = {
1283 .read = openpic_summary_read,
1284 .write = openpic_summary_write,
1285 .start_addr = OPENPIC_SUMMARY_REG_START,
1286 .size = OPENPIC_SUMMARY_REG_SIZE,
1289 static void add_mmio_region(struct openpic *opp, const struct mem_reg *mr)
1291 if (opp->num_mmio_regions >= MAX_MMIO_REGIONS) {
1292 WARN(1, "kvm mpic: too many mmio regions\n");
1296 opp->mmio_regions[opp->num_mmio_regions++] = mr;
1299 static void fsl_common_init(struct openpic *opp)
1304 add_mmio_region(opp, &openpic_msi_mmio);
1305 add_mmio_region(opp, &openpic_summary_mmio);
1307 opp->vid = VID_REVISION_1_2;
1308 opp->vir = VIR_GENERIC;
1309 opp->vector_mask = 0xFFFF;
1310 opp->tfrr_reset = 0;
1311 opp->ivpr_reset = IVPR_MASK_MASK;
1312 opp->idr_reset = 1 << 0;
1313 opp->max_irq = MAX_IRQ;
1315 opp->irq_ipi0 = virq;
1317 opp->irq_tim0 = virq;
1320 BUG_ON(virq > MAX_IRQ);
1324 for (i = 0; i < opp->fsl->max_ext; i++)
1325 opp->src[i].level = false;
1327 /* Internal interrupts, including message and MSI */
1328 for (i = 16; i < MAX_SRC; i++) {
1329 opp->src[i].type = IRQ_TYPE_FSLINT;
1330 opp->src[i].level = true;
1333 /* timers and IPIs */
1334 for (i = MAX_SRC; i < virq; i++) {
1335 opp->src[i].type = IRQ_TYPE_FSLSPECIAL;
1336 opp->src[i].level = false;
1340 static int kvm_mpic_read_internal(struct openpic *opp, gpa_t addr, u32 *ptr)
1344 for (i = 0; i < opp->num_mmio_regions; i++) {
1345 const struct mem_reg *mr = opp->mmio_regions[i];
1347 if (mr->start_addr > addr || addr >= mr->start_addr + mr->size)
1350 return mr->read(opp, addr - mr->start_addr, ptr);
1356 static int kvm_mpic_write_internal(struct openpic *opp, gpa_t addr, u32 val)
1360 for (i = 0; i < opp->num_mmio_regions; i++) {
1361 const struct mem_reg *mr = opp->mmio_regions[i];
1363 if (mr->start_addr > addr || addr >= mr->start_addr + mr->size)
1366 return mr->write(opp, addr - mr->start_addr, val);
1372 static int kvm_mpic_read(struct kvm_vcpu *vcpu,
1373 struct kvm_io_device *this,
1374 gpa_t addr, int len, void *ptr)
1376 struct openpic *opp = container_of(this, struct openpic, mmio);
1383 if (addr & (len - 1)) {
1384 pr_debug("%s: bad alignment %llx/%d\n",
1385 __func__, addr, len);
1389 spin_lock_irq(&opp->lock);
1390 ret = kvm_mpic_read_internal(opp, addr - opp->reg_base, &u.val);
1391 spin_unlock_irq(&opp->lock);
1394 * Technically only 32-bit accesses are allowed, but be nice to
1395 * people dumping registers a byte at a time -- it works in real
1396 * hardware (reads only, not writes).
1399 *(u32 *)ptr = u.val;
1400 pr_debug("%s: addr %llx ret %d len 4 val %x\n",
1401 __func__, addr, ret, u.val);
1402 } else if (len == 1) {
1403 *(u8 *)ptr = u.bytes[addr & 3];
1404 pr_debug("%s: addr %llx ret %d len 1 val %x\n",
1405 __func__, addr, ret, u.bytes[addr & 3]);
1407 pr_debug("%s: bad length %d\n", __func__, len);
1414 static int kvm_mpic_write(struct kvm_vcpu *vcpu,
1415 struct kvm_io_device *this,
1416 gpa_t addr, int len, const void *ptr)
1418 struct openpic *opp = container_of(this, struct openpic, mmio);
1422 pr_debug("%s: bad length %d\n", __func__, len);
1426 pr_debug("%s: bad alignment %llx/%d\n", __func__, addr, len);
1430 spin_lock_irq(&opp->lock);
1431 ret = kvm_mpic_write_internal(opp, addr - opp->reg_base,
1433 spin_unlock_irq(&opp->lock);
1435 pr_debug("%s: addr %llx ret %d val %x\n",
1436 __func__, addr, ret, *(const u32 *)ptr);
1441 static const struct kvm_io_device_ops mpic_mmio_ops = {
1442 .read = kvm_mpic_read,
1443 .write = kvm_mpic_write,
1446 static void map_mmio(struct openpic *opp)
1448 kvm_iodevice_init(&opp->mmio, &mpic_mmio_ops);
1450 kvm_io_bus_register_dev(opp->kvm, KVM_MMIO_BUS,
1451 opp->reg_base, OPENPIC_REG_SIZE,
1455 static void unmap_mmio(struct openpic *opp)
1457 kvm_io_bus_unregister_dev(opp->kvm, KVM_MMIO_BUS, &opp->mmio);
1460 static int set_base_addr(struct openpic *opp, struct kvm_device_attr *attr)
1464 if (copy_from_user(&base, (u64 __user *)(long)attr->addr, sizeof(u64)))
1467 if (base & 0x3ffff) {
1468 pr_debug("kvm mpic %s: KVM_DEV_MPIC_BASE_ADDR %08llx not aligned\n",
1473 if (base == opp->reg_base)
1476 mutex_lock(&opp->kvm->slots_lock);
1479 opp->reg_base = base;
1481 pr_debug("kvm mpic %s: KVM_DEV_MPIC_BASE_ADDR %08llx\n",
1490 mutex_unlock(&opp->kvm->slots_lock);
1497 static int access_reg(struct openpic *opp, gpa_t addr, u32 *val, int type)
1504 spin_lock_irq(&opp->lock);
1506 if (type == ATTR_SET)
1507 ret = kvm_mpic_write_internal(opp, addr, *val);
1509 ret = kvm_mpic_read_internal(opp, addr, val);
1511 spin_unlock_irq(&opp->lock);
1513 pr_debug("%s: type %d addr %llx val %x\n", __func__, type, addr, *val);
1518 static int mpic_set_attr(struct kvm_device *dev, struct kvm_device_attr *attr)
1520 struct openpic *opp = dev->private;
1523 switch (attr->group) {
1524 case KVM_DEV_MPIC_GRP_MISC:
1525 switch (attr->attr) {
1526 case KVM_DEV_MPIC_BASE_ADDR:
1527 return set_base_addr(opp, attr);
1532 case KVM_DEV_MPIC_GRP_REGISTER:
1533 if (get_user(attr32, (u32 __user *)(long)attr->addr))
1536 return access_reg(opp, attr->attr, &attr32, ATTR_SET);
1538 case KVM_DEV_MPIC_GRP_IRQ_ACTIVE:
1539 if (attr->attr > MAX_SRC)
1542 if (get_user(attr32, (u32 __user *)(long)attr->addr))
1545 if (attr32 != 0 && attr32 != 1)
1548 spin_lock_irq(&opp->lock);
1549 openpic_set_irq(opp, attr->attr, attr32);
1550 spin_unlock_irq(&opp->lock);
1557 static int mpic_get_attr(struct kvm_device *dev, struct kvm_device_attr *attr)
1559 struct openpic *opp = dev->private;
1564 switch (attr->group) {
1565 case KVM_DEV_MPIC_GRP_MISC:
1566 switch (attr->attr) {
1567 case KVM_DEV_MPIC_BASE_ADDR:
1568 mutex_lock(&opp->kvm->slots_lock);
1569 attr64 = opp->reg_base;
1570 mutex_unlock(&opp->kvm->slots_lock);
1572 if (copy_to_user((u64 __user *)(long)attr->addr,
1573 &attr64, sizeof(u64)))
1581 case KVM_DEV_MPIC_GRP_REGISTER:
1582 ret = access_reg(opp, attr->attr, &attr32, ATTR_GET);
1586 if (put_user(attr32, (u32 __user *)(long)attr->addr))
1591 case KVM_DEV_MPIC_GRP_IRQ_ACTIVE:
1592 if (attr->attr > MAX_SRC)
1595 spin_lock_irq(&opp->lock);
1596 attr32 = opp->src[attr->attr].pending;
1597 spin_unlock_irq(&opp->lock);
1599 if (put_user(attr32, (u32 __user *)(long)attr->addr))
1608 static int mpic_has_attr(struct kvm_device *dev, struct kvm_device_attr *attr)
1610 switch (attr->group) {
1611 case KVM_DEV_MPIC_GRP_MISC:
1612 switch (attr->attr) {
1613 case KVM_DEV_MPIC_BASE_ADDR:
1619 case KVM_DEV_MPIC_GRP_REGISTER:
1622 case KVM_DEV_MPIC_GRP_IRQ_ACTIVE:
1623 if (attr->attr > MAX_SRC)
1632 static void mpic_destroy(struct kvm_device *dev)
1634 struct openpic *opp = dev->private;
1636 dev->kvm->arch.mpic = NULL;
1641 static int mpic_set_default_irq_routing(struct openpic *opp)
1643 struct kvm_irq_routing_entry *routing;
1645 /* Create a nop default map, so that dereferencing it still works */
1646 routing = kzalloc((sizeof(*routing)), GFP_KERNEL);
1650 kvm_set_irq_routing(opp->kvm, routing, 0, 0);
1656 static int mpic_create(struct kvm_device *dev, u32 type)
1658 struct openpic *opp;
1661 /* We only support one MPIC at a time for now */
1662 if (dev->kvm->arch.mpic)
1665 opp = kzalloc(sizeof(struct openpic), GFP_KERNEL);
1670 opp->kvm = dev->kvm;
1673 spin_lock_init(&opp->lock);
1675 add_mmio_region(opp, &openpic_gbl_mmio);
1676 add_mmio_region(opp, &openpic_tmr_mmio);
1677 add_mmio_region(opp, &openpic_src_mmio);
1678 add_mmio_region(opp, &openpic_cpu_mmio);
1680 switch (opp->model) {
1681 case KVM_DEV_TYPE_FSL_MPIC_20:
1682 opp->fsl = &fsl_mpic_20;
1683 opp->brr1 = 0x00400200;
1684 opp->flags |= OPENPIC_FLAG_IDR_CRIT;
1686 opp->mpic_mode_mask = GCR_MODE_MIXED;
1688 fsl_common_init(opp);
1692 case KVM_DEV_TYPE_FSL_MPIC_42:
1693 opp->fsl = &fsl_mpic_42;
1694 opp->brr1 = 0x00400402;
1695 opp->flags |= OPENPIC_FLAG_ILR;
1697 opp->mpic_mode_mask = GCR_MODE_PROXY;
1699 fsl_common_init(opp);
1708 ret = mpic_set_default_irq_routing(opp);
1715 dev->kvm->arch.mpic = opp;
1724 struct kvm_device_ops kvm_mpic_ops = {
1726 .create = mpic_create,
1727 .destroy = mpic_destroy,
1728 .set_attr = mpic_set_attr,
1729 .get_attr = mpic_get_attr,
1730 .has_attr = mpic_has_attr,
1733 int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu,
1736 struct openpic *opp = dev->private;
1739 if (dev->ops != &kvm_mpic_ops)
1741 if (opp->kvm != vcpu->kvm)
1743 if (cpu < 0 || cpu >= MAX_CPU)
1746 spin_lock_irq(&opp->lock);
1748 if (opp->dst[cpu].vcpu) {
1752 if (vcpu->arch.irq_type) {
1757 opp->dst[cpu].vcpu = vcpu;
1758 opp->nb_cpus = max(opp->nb_cpus, cpu + 1);
1760 vcpu->arch.mpic = opp;
1761 vcpu->arch.irq_cpu_id = cpu;
1762 vcpu->arch.irq_type = KVMPPC_IRQ_MPIC;
1764 /* This might need to be changed if GCR gets extended */
1765 if (opp->mpic_mode_mask == GCR_MODE_PROXY)
1766 vcpu->arch.epr_flags |= KVMPPC_EPR_KERNEL;
1769 spin_unlock_irq(&opp->lock);
1774 * This should only happen immediately before the mpic is destroyed,
1775 * so we shouldn't need to worry about anything still trying to
1776 * access the vcpu pointer.
1778 void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, struct kvm_vcpu *vcpu)
1780 BUG_ON(!opp->dst[vcpu->arch.irq_cpu_id].vcpu);
1782 opp->dst[vcpu->arch.irq_cpu_id].vcpu = NULL;
1787 * < 0 Interrupt was ignored (masked or not delivered for other reasons)
1788 * = 0 Interrupt was coalesced (previous irq is still pending)
1789 * > 0 Number of CPUs interrupt was delivered to
1791 static int mpic_set_irq(struct kvm_kernel_irq_routing_entry *e,
1792 struct kvm *kvm, int irq_source_id, int level,
1795 u32 irq = e->irqchip.pin;
1796 struct openpic *opp = kvm->arch.mpic;
1797 unsigned long flags;
1799 spin_lock_irqsave(&opp->lock, flags);
1800 openpic_set_irq(opp, irq, level);
1801 spin_unlock_irqrestore(&opp->lock, flags);
1803 /* All code paths we care about don't check for the return value */
1807 int kvm_set_msi(struct kvm_kernel_irq_routing_entry *e,
1808 struct kvm *kvm, int irq_source_id, int level, bool line_status)
1810 struct openpic *opp = kvm->arch.mpic;
1811 unsigned long flags;
1813 spin_lock_irqsave(&opp->lock, flags);
1816 * XXX We ignore the target address for now, as we only support
1817 * a single MSI bank.
1819 openpic_msi_write(kvm->arch.mpic, MSIIR_OFFSET, e->msi.data);
1820 spin_unlock_irqrestore(&opp->lock, flags);
1822 /* All code paths we care about don't check for the return value */
1826 int kvm_set_routing_entry(struct kvm *kvm,
1827 struct kvm_kernel_irq_routing_entry *e,
1828 const struct kvm_irq_routing_entry *ue)
1833 case KVM_IRQ_ROUTING_IRQCHIP:
1834 e->set = mpic_set_irq;
1835 e->irqchip.irqchip = ue->u.irqchip.irqchip;
1836 e->irqchip.pin = ue->u.irqchip.pin;
1837 if (e->irqchip.pin >= KVM_IRQCHIP_NUM_PINS)
1840 case KVM_IRQ_ROUTING_MSI:
1841 e->set = kvm_set_msi;
1842 e->msi.address_lo = ue->u.msi.address_lo;
1843 e->msi.address_hi = ue->u.msi.address_hi;
1844 e->msi.data = ue->u.msi.data;