genirq: Provide default callbacks for msi_domain_ops
Extend struct msi_domain_info and provide default callbacks for
msi_domain_ops.
Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Yijing Wang <wangyijing@huawei.com>
Cc: Yingjoe Chen <yingjoe.chen@mediatek.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: Alexander Gordeev <agordeev@redhat.com>
Link: http://lkml.kernel.org/r/1416061447-9472-8-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/include/linux/msi.h b/include/linux/msi.h
index 7a93a98..0098e2c 100644
--- a/include/linux/msi.h
+++ b/include/linux/msi.h
@@ -116,6 +116,7 @@
#ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN
+#include <linux/irqhandler.h>
#include <asm/msi.h>
struct irq_domain;
@@ -142,11 +143,12 @@
* interfaces which are based on msi_desc.
*/
struct msi_domain_ops {
- irq_hw_number_t (*get_hwirq)(struct msi_domain_info *info, void *arg);
+ irq_hw_number_t (*get_hwirq)(struct msi_domain_info *info,
+ msi_alloc_info_t *arg);
int (*msi_init)(struct irq_domain *domain,
struct msi_domain_info *info,
unsigned int virq, irq_hw_number_t hwirq,
- void *arg);
+ msi_alloc_info_t *arg);
void (*msi_free)(struct irq_domain *domain,
struct msi_domain_info *info,
unsigned int virq);
@@ -165,16 +167,46 @@
/**
* struct msi_domain_info - MSI interrupt domain data
- * @ops: The callback data structure
- * @chip: The associated interrupt chip
- * @data: Domain specific data
+ * @flags: Flags to decribe features and capabilities
+ * @ops: The callback data structure
+ * @chip: Optional: associated interrupt chip
+ * @chip_data: Optional: associated interrupt chip data
+ * @handler: Optional: associated interrupt flow handler
+ * @handler_data: Optional: associated interrupt flow handler data
+ * @handler_name: Optional: associated interrupt flow handler name
+ * @data: Optional: domain specific data
*/
struct msi_domain_info {
+ u32 flags;
struct msi_domain_ops *ops;
struct irq_chip *chip;
+ void *chip_data;
+ irq_flow_handler_t handler;
+ void *handler_data;
+ const char *handler_name;
void *data;
};
+/* Flags for msi_domain_info */
+enum {
+ /*
+ * Init non implemented ops callbacks with default MSI domain
+ * callbacks.
+ */
+ MSI_FLAG_USE_DEF_DOM_OPS = (1 << 0),
+ /*
+ * Init non implemented chip callbacks with default MSI chip
+ * callbacks.
+ */
+ MSI_FLAG_USE_DEF_CHIP_OPS = (1 << 1),
+ /* Build identity map between hwirq and irq */
+ MSI_FLAG_IDENTITY_MAP = (1 << 2),
+ /* Support multiple PCI MSI interrupts */
+ MSI_FLAG_MULTI_PCI_MSI = (1 << 3),
+ /* Support PCI MSIX interrupts */
+ MSI_FLAG_PCI_MSIX = (1 << 4),
+};
+
int msi_domain_set_affinity(struct irq_data *data, const struct cpumask *mask,
bool force);