Mailing List Archive

From: Alistair Francis <alistair.francis@wdc.com>

Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
---
xen/arch/riscv/irq.c | 107 +++++++++++++++++++++++++++++++++++++++++++
1 file changed, 107 insertions(+)
create mode 100644 xen/arch/riscv/irq.c

diff --git a/xen/arch/riscv/irq.c b/xen/arch/riscv/irq.c
new file mode 100644
index 0000000000..d1b0b578de
--- /dev/null
+++ b/xen/arch/riscv/irq.c
@@ -0,0 +1,107 @@
+/*
+ * RISC-V Interrupt support
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <xen/lib.h>
+#include <xen/spinlock.h>
+#include <xen/irq.h>
+#include <xen/init.h>
+#include <xen/errno.h>
+#include <xen/sched.h>
+
+const unsigned int nr_irqs = NR_IRQS;
+
+static void ack_none(struct irq_desc *irq)
+{
+ printk("unexpected IRQ trap at irq %02x\n", irq->irq);
+}
+
+static void end_none(struct irq_desc *irq)
+{
+ /* TODO */
+}
+
+hw_irq_controller no_irq_type = {
+ .typename = "none",
+ .startup = irq_startup_none,
+ .shutdown = irq_shutdown_none,
+ .enable = irq_enable_none,
+ .disable = irq_disable_none,
+ .ack = ack_none,
+ .end = end_none
+};
+
+static irq_desc_t irq_desc[NR_IRQS];
+static DEFINE_PER_CPU(irq_desc_t[NR_LOCAL_IRQS], local_irq_desc);
+
+int arch_init_one_irq_desc(struct irq_desc *desc)
+{
+ return 0;
+}
+
+struct pirq *alloc_pirq_struct(struct domain *d)
+{
+ /* TODO */
+
+ return NULL;
+}
+
+irq_desc_t *__irq_to_desc(int irq)
+{
+ if ( irq < NR_LOCAL_IRQS )
+ return &this_cpu(local_irq_desc)[irq];
+
+ return &irq_desc[irq-NR_LOCAL_IRQS];
+}
+
+int pirq_guest_bind(struct vcpu *v, struct pirq *pirq, int will_share)
+{
+ BUG();
+}
+
+void pirq_guest_unbind(struct domain *d, struct pirq *pirq)
+{
+ BUG();
+}
+
+void pirq_set_affinity(struct domain *d, int pirq, const cpumask_t *mask)
+{
+ BUG();
+}
+
+void smp_send_state_dump(unsigned int cpu)
+{
+ /* TODO */
+}
+
+void arch_move_irqs(struct vcpu *v)
+{
+ /* TODO */
+}
+
+int setup_irq(unsigned int irq, unsigned int irqflags, struct irqaction *new)
+{
+ int rc = 0;
+ unsigned long flags;
+ struct irq_desc *desc;
+
+ desc = irq_to_desc(irq);
+
+ spin_lock_irqsave(&desc->lock, flags);
+
+ /* TODO */
+
+ spin_unlock_irqrestore(&desc->lock, flags);
+
+ return rc;
+}
--
2.25.0


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