linux-kernel - [tip:irq/irqdomain] irqdomain: Introduce helper function irq_domain_add

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <tip-afb7da83b9f476728623130703acb553d7c7c4d9@git.kernel.org>
Date:	Sun, 23 Nov 2014 10:11:44 -0800
From:	tip-bot for Jiang Liu <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	matthias.bgg@...il.com, tony.luck@...el.com, tglx@...utronix.de,
	benh@...nel.crashing.org, linux-kernel@...r.kernel.org,
	hpa@...or.com, grant.likely@...aro.org, wangyijing@...wei.com,
	marc.zyngier@....com, bhelgaas@...gle.com,
	yingjoe.chen@...iatek.com, bp@...en8.de, mingo@...nel.org,
	jiang.liu@...ux.intel.com
Subject: [tip:irq/irqdomain] irqdomain:
  Introduce helper function irq_domain_add_hierarchy()

Commit-ID:  afb7da83b9f476728623130703acb553d7c7c4d9
Gitweb:     http://git.kernel.org/tip/afb7da83b9f476728623130703acb553d7c7c4d9
Author:     Jiang Liu <jiang.liu@...ux.intel.com>
AuthorDate: Sat, 15 Nov 2014 22:24:02 +0800
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Sun, 23 Nov 2014 13:01:46 +0100

irqdomain: Introduce helper function irq_domain_add_hierarchy()

Introduce helper function irq_domain_add_hierarchy(), which creates
a linear irqdomain if parameter 'size' is not zero, otherwise creates
a tree irqdomain.

Signed-off-by: Jiang Liu <jiang.liu@...ux.intel.com>
Cc: Tony Luck <tony.luck@...el.com>
Cc: linux-arm-kernel@...ts.infradead.org
Cc: Bjorn Helgaas <bhelgaas@...gle.com>
Cc: Grant Likely <grant.likely@...aro.org>
Cc: Marc Zyngier <marc.zyngier@....com>
Cc: Yijing Wang <wangyijing@...wei.com>
Cc: Yingjoe Chen <yingjoe.chen@...iatek.com>
Cc: Borislav Petkov <bp@...en8.de>
Cc: Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc: Matthias Brugger <matthias.bgg@...il.com>
Link: http://lkml.kernel.org/r/1416061447-9472-5-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
---
 include/linux/irqdomain.h |  4 ++++
 kernel/irq/irqdomain.c    | 36 ++++++++++++++++++++++++++++++++++++
 2 files changed, 40 insertions(+)

diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h
index dd2709b..676d730 100644
--- a/include/linux/irqdomain.h
+++ b/include/linux/irqdomain.h
@@ -259,6 +259,10 @@ int irq_domain_xlate_onetwocell(struct irq_domain *d, struct device_node *ctrlr,
 extern struct irq_data *irq_domain_get_irq_data(struct irq_domain *domain,
 						unsigned int virq);
 #ifdef	CONFIG_IRQ_DOMAIN_HIERARCHY
+extern struct irq_domain *irq_domain_add_hierarchy(struct irq_domain *parent,
+			unsigned int flags, unsigned int size,
+			struct device_node *node,
+			const struct irq_domain_ops *ops, void *host_data);
 extern int __irq_domain_alloc_irqs(struct irq_domain *domain, int irq_base,
 				   unsigned int nr_irqs, int node, void *arg,
 				   bool realloc);
diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
index 9c88db7..7fac311 100644
--- a/kernel/irq/irqdomain.c
+++ b/kernel/irq/irqdomain.c
@@ -742,6 +742,42 @@ static int irq_domain_alloc_descs(int virq, unsigned int cnt,
 }
 
 #ifdef	CONFIG_IRQ_DOMAIN_HIERARCHY
+/**
+ * irq_domain_add_hierarchy - Add a irqdomain into the hierarchy
+ * @parent:	Parent irq domain to associate with the new domain
+ * @flags:	Irq domain flags associated to the domain
+ * @size:	Size of the domain. See below
+ * @node:	Optional device-tree node of the interrupt controller
+ * @ops:	Pointer to the interrupt domain callbacks
+ * @host_data:	Controller private data pointer
+ *
+ * If @size is 0 a tree domain is created, otherwise a linear domain.
+ *
+ * If successful the parent is associated to the new domain and the
+ * domain flags are set.
+ * Returns pointer to IRQ domain, or NULL on failure.
+ */
+struct irq_domain *irq_domain_add_hierarchy(struct irq_domain *parent,
+					    unsigned int flags,
+					    unsigned int size,
+					    struct device_node *node,
+					    const struct irq_domain_ops *ops,
+					    void *host_data)
+{
+	struct irq_domain *domain;
+
+	if (size)
+		domain = irq_domain_add_linear(node, size, ops, host_data);
+	else
+		domain = irq_domain_add_tree(node, ops, host_data);
+	if (domain) {
+		domain->parent = parent;
+		domain->flags |= flags;
+	}
+
+	return domain;
+}
+
 static void irq_domain_insert_irq(int virq)
 {
 	struct irq_data *data;
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/