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genirq: Provide default callbacks for msi_domain_ops

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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>
This commit is contained in:
Jiang Liu
2014-11-15 22:24:05 +08:00
committed by Thomas Gleixner
parent d9109698be
commit aeeb59657c
2 changed files with 140 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

42
include/linux/msi.h
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@@ -116,6 +116,7 @@ struct msi_controller {
#ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN
#include <linux/irqhandler.h>
#include <asm/msi.h>
struct irq_domain;
@@ -142,11 +143,12 @@ struct msi_domain_info;
* 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_ops {
/**
* 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);