From: David Vrabel <david.vrabel@citrix.com>
To: xen-devel@lists.xen.org
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>,
David Vrabel <david.vrabel@citrix.com>,
Jan Beulich <jbeulich@suse.com>
Subject: [PATCH 09/16] xen/events: add a evtchn_op for port setup
Date: Wed, 2 Oct 2013 18:14:54 +0100 [thread overview]
Message-ID: <1380734101-2991-10-git-send-email-david.vrabel@citrix.com> (raw)
In-Reply-To: <1380734101-2991-1-git-send-email-david.vrabel@citrix.com>
From: David Vrabel <david.vrabel@citrix.com>
Add a hook for port-specific setup and call it from
xen_irq_info_common_setup().
The FIFO-based ABIs may need to perform additional setup (expanding
the event array) before a bound event channel can start to receive
events.
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
---
drivers/xen/events/events.c | 2 +-
drivers/xen/events/events_internal.h | 12 ++++++++++++
2 files changed, 13 insertions(+), 1 deletions(-)
diff --git a/drivers/xen/events/events.c b/drivers/xen/events/events.c
index 8f55a49..cf1c7ba 100644
--- a/drivers/xen/events/events.c
+++ b/drivers/xen/events/events.c
@@ -117,7 +117,7 @@ static int xen_irq_info_common_setup(struct irq_info *info,
irq_clear_status_flags(irq, IRQ_NOREQUEST|IRQ_NOAUTOEN);
- return 0;
+ return xen_evtchn_port_setup(info);
}
static int xen_irq_info_evtchn_setup(unsigned irq,
diff --git a/drivers/xen/events/events_internal.h b/drivers/xen/events/events_internal.h
index ba88f57..3eb573a 100644
--- a/drivers/xen/events/events_internal.h
+++ b/drivers/xen/events/events_internal.h
@@ -55,6 +55,7 @@ struct irq_info {
#define PIRQ_SHAREABLE (1 << 1)
struct evtchn_ops {
+ int (*setup)(struct irq_info *info);
void (*bind_to_cpu)(struct irq_info *info, unsigned cpu);
void (*clear_pending)(unsigned port);
@@ -75,6 +76,17 @@ struct irq_info *info_for_irq(unsigned irq);
unsigned cpu_from_irq(unsigned irq);
unsigned cpu_from_evtchn(unsigned int evtchn);
+/*
+ * Do any ABI specific setup for a bound event channel before it can
+ * be unmasked and used.
+ */
+static inline int xen_evtchn_port_setup(struct irq_info *info)
+{
+ if (evtchn_ops->setup)
+ return evtchn_ops->setup(info);
+ return 0;
+}
+
static inline void xen_evtchn_port_bind_to_cpu(struct irq_info *info,
unsigned cpu)
{
--
1.7.2.5
next prev parent reply other threads:[~2013-10-02 17:14 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-02 17:14 [PATCHv5 00/16] Linux: FIFO-based event channel ABI David Vrabel
2013-10-02 17:14 ` [PATCH 01/16] xen/events: refactor retrigger_dynirq() and resend_irq_on_evtchn() David Vrabel
2013-10-02 20:43 ` Konrad Rzeszutek Wilk
2013-10-02 21:01 ` David Vrabel
2013-10-02 21:08 ` Konrad Rzeszutek Wilk
2013-10-02 22:06 ` David Vrabel
2013-10-02 17:14 ` [PATCH 02/16] xen/events: remove unnecessary init_evtchn_cpu_bindings() David Vrabel
2013-10-02 17:14 ` [PATCH 03/16] xen/events: introduce test_and_set_mask David Vrabel
2013-10-02 17:14 ` [PATCH 04/16] xen/events: replace raw bit ops with functions David Vrabel
2013-10-02 17:14 ` [PATCH 05/16] xen/events: move drivers/xen/events.c into drivers/xen/events/ David Vrabel
2013-10-02 17:14 ` [PATCH 06/16] xen/events: move 2-level specific code into its own file David Vrabel
2013-10-02 17:14 ` [PATCH 07/16] xen/events: add struct evtchn_ops for the low-level port operations David Vrabel
2013-10-02 17:14 ` [PATCH 08/16] xen/events: allow setup of irq_info to fail David Vrabel
2013-10-02 17:14 ` David Vrabel [this message]
2013-10-02 17:14 ` [PATCH 10/16] xen/events: Refactor evtchn_to_irq array to be dynamically allocated David Vrabel
2013-10-02 17:14 ` [PATCH 11/16] xen/events: add xen_evtchn_mask_all() David Vrabel
2013-10-02 17:14 ` [PATCH 12/16] xen/evtchn: support more than 4096 ports David Vrabel
2013-10-02 17:14 ` [PATCH 13/16] xen/events: Add the hypervisor interface for the FIFO-based event channels David Vrabel
2013-10-02 17:14 ` [PATCH 14/16] xen/events: allow event channel priority to be set David Vrabel
2013-10-02 17:15 ` [PATCH 15/16] xen/x86: set VIRQ_TIMER priority to maximum David Vrabel
2013-10-02 17:15 ` [PATCH 16/16] xen/events: use the FIFO-based ABI if available David Vrabel
-- strict thread matches above, loose matches on Subject: below --
2013-10-08 12:48 [PATCHv6 00/16] Linux: FIFO-based event channel ABI David Vrabel
2013-10-08 12:49 ` [PATCH 09/16] xen/events: add a evtchn_op for port setup David Vrabel
2013-10-18 14:23 [PATCHv7 00/16] Linux: FIFO-based event channel ABI David Vrabel
2013-10-18 14:23 ` [PATCH 09/16] xen/events: add a evtchn_op for port setup David Vrabel
2013-10-31 15:09 [PATCHv8 00/16] Linux: FIFO-based event channel ABI David Vrabel
2013-10-31 15:09 ` [PATCH 09/16] xen/events: add a evtchn_op for port setup David Vrabel
2013-11-11 16:12 [PATCHv9 00/16] Linux: FIFO-based event channel ABI David Vrabel
2013-11-11 16:12 ` [PATCH 09/16] xen/events: add a evtchn_op for port setup David Vrabel
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