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genirq/MSI: Store 'struct device' instead of 'struct pci_dev' in struct msi_desc

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Store 'struct device *' instead of 'struct pci_dev *' in struct msi_desc,
so struct msi_desc can be reused by non PCI based MSI drivers.

Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Reviewed-by: Yijing Wang <wangyijing@huawei.com>
Reviewed-by: Marc Zyngier <marc.zyngier@arm.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: Stuart Yoder <stuart.yoder@freescale.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Alexander Gordeev <agordeev@redhat.com>
Link: http://lkml.kernel.org/r/1436428847-8886-11-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Jiang Liu 2015-07-09 16:00:45 +08:00 • committed by Thomas Gleixner
parent 4a7cc83167
commit 25a98bd4ff
2 changed files with 10 additions and 8 deletions
Download patch file Download diff file Expand all files Collapse all files

7
drivers/pci/msi.c
View file

@ -413,7 +413,7 @@ static struct msi_desc *alloc_msi_entry(struct pci_dev *dev)
return NULL; return NULL;
INIT_LIST_HEAD(&desc->list); INIT_LIST_HEAD(&desc->list);
desc->dev = dev; desc->dev = &dev->dev;
return desc; return desc;
} }
@ -1140,6 +1140,11 @@ int pci_enable_msix_range(struct pci_dev *dev, struct msix_entry *entries,
} }
EXPORT_SYMBOL(pci_enable_msix_range); EXPORT_SYMBOL(pci_enable_msix_range);
struct pci_dev *msi_desc_to_pci_dev(struct msi_desc *desc)
{
return to_pci_dev(desc->dev);
}
void *msi_desc_to_pci_sysdata(struct msi_desc *desc) void *msi_desc_to_pci_sysdata(struct msi_desc *desc)
{ {
struct pci_dev *dev = msi_desc_to_pci_dev(desc); struct pci_dev *dev = msi_desc_to_pci_dev(desc);

11
include/linux/msi.h
View file

@ -14,6 +14,7 @@ extern int pci_msi_ignore_mask;
/* Helper functions */ /* Helper functions */
struct irq_data; struct irq_data;
struct msi_desc; struct msi_desc;
struct pci_dev;
void __get_cached_msi_msg(struct msi_desc *entry, struct msi_msg *msg); void __get_cached_msi_msg(struct msi_desc *entry, struct msi_msg *msg);
void get_cached_msi_msg(unsigned int irq, struct msi_msg *msg); void get_cached_msi_msg(unsigned int irq, struct msi_msg *msg);
@ -37,14 +38,14 @@ struct msi_desc {
void __iomem *mask_base; void __iomem *mask_base;
u8 mask_pos; u8 mask_pos;
}; };
struct pci_dev *dev; struct device *dev;
/* Last set MSI message */ /* Last set MSI message */
struct msi_msg msg; struct msi_msg msg;
}; };
/* Helpers to hide struct msi_desc implementation details */ /* Helpers to hide struct msi_desc implementation details */
#define msi_desc_to_dev(desc) (&(desc)->dev.dev) #define msi_desc_to_dev(desc) ((desc)->dev)
#define dev_to_msi_list(dev) (&(dev)->msi_list) #define dev_to_msi_list(dev) (&(dev)->msi_list)
#define first_msi_entry(dev) \ #define first_msi_entry(dev) \
list_first_entry(dev_to_msi_list((dev)), struct msi_desc, list) list_first_entry(dev_to_msi_list((dev)), struct msi_desc, list)
@ -56,11 +57,7 @@ struct msi_desc {
#define for_each_pci_msi_entry(desc, pdev) \ #define for_each_pci_msi_entry(desc, pdev) \
for_each_msi_entry((desc), &(pdev)->dev) for_each_msi_entry((desc), &(pdev)->dev)
static inline struct pci_dev *msi_desc_to_pci_dev(struct msi_desc *desc) struct pci_dev *msi_desc_to_pci_dev(struct msi_desc *desc);
{
return desc->dev;
}
void *msi_desc_to_pci_sysdata(struct msi_desc *desc); void *msi_desc_to_pci_sysdata(struct msi_desc *desc);
#else /* CONFIG_PCI_MSI */ #else /* CONFIG_PCI_MSI */
static inline void *msi_desc_to_pci_sysdata(struct msi_desc *desc) static inline void *msi_desc_to_pci_sysdata(struct msi_desc *desc)