KVM: PPC: Book3S HV: Add more info about XIVE queues in debugfs

Add details about enabled queues and escalation interrupts.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>

1 files changed, 28 insertions, 0 deletions

diff --git a/arch/powerpc/kvm/book3s_xive.c b/arch/powerpc/kvm/book3s_xive.c
index bf457843e032..6cff5bdfd6b7 100644
--- a/arch/powerpc/kvm/book3s_xive.c
+++ b/arch/powerpc/kvm/book3s_xive.c
@@ -1794,6 +1794,7 @@ static int xive_debug_show(struct seq_file *m, void *private)
 
         kvm_for_each_vcpu(i, vcpu, kvm) {
                 struct kvmppc_xive_vcpu *xc = vcpu->arch.xive_vcpu;
+                unsigned int i;
 
                 if (!xc)
                         continue;
@@ -1803,6 +1804,33 @@ static int xive_debug_show(struct seq_file *m, void *private)
                            xc->server_num, xc->cppr, xc->hw_cppr,
                            xc->mfrr, xc->pending,
                            xc->stat_rm_h_xirr, xc->stat_vm_h_xirr);
+                for (i = 0; i < KVMPPC_XIVE_Q_COUNT; i++) {
+                        struct xive_q *q = &xc->queues[i];
+                        u32 i0, i1, idx;
+
+                        if (!q->qpage && !xc->esc_virq[i])
+                                continue;
+
+                        seq_printf(m, " [q%d]: ", i);
+
+                        if (q->qpage) {
+                                idx = q->idx;
+                                i0 = be32_to_cpup(q->qpage + idx);
+                                idx = (idx + 1) & q->msk;
+                                i1 = be32_to_cpup(q->qpage + idx);
+                                seq_printf(m, "T=%d %08x %08x... \n", q->toggle, i0, i1);
+                        }
+                        if (xc->esc_virq[i]) {
+                                struct irq_data *d = irq_get_irq_data(xc->esc_virq[i]);
+                                struct xive_irq_data *xd = irq_data_get_irq_handler_data(d);
+                                u64 pq = xive_vm_esb_load(xd, XIVE_ESB_GET);
+                                seq_printf(m, "E:%c%c I(%d:%llx:%llx)",
+                                           (pq & XIVE_ESB_VAL_P) ? 'P' : 'p',
+                                           (pq & XIVE_ESB_VAL_Q) ? 'Q' : 'q',
+                                           xc->esc_virq[i], pq, xd->eoi_page);
+                                seq_printf(m, "\n");
+                        }
+                }
 
                 t_rm_h_xirr += xc->stat_rm_h_xirr;
                 t_rm_h_ipoll += xc->stat_rm_h_ipoll;