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msi: Make MSI useable more architectures

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The arch hooks arch_setup_msi_irq and arch_teardown_msi_irq are now
responsible for allocating and freeing the linux irq in addition to
setting up the the linux irq to work with the interrupt.

arch_setup_msi_irq now takes a pci_device and a msi_desc and returns
an irq.

With this change in place this code should be useable by all platforms
except those that won't let the OS touch the hardware like ppc RTAS.

Signed-off-by: Eric W. Biederman <[email protected]>
Acked-by: Ingo Molnar <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Eric W. Biederman 2007-01-28 12:56:37 -07:00 • committed by Greg Kroah-Hartman
commit f7feaca77d
7 changed files with 75 additions and 83 deletions
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3
include/asm-ia64/machvec.h
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@ -21,6 +21,7 @@ struct mm_struct;
struct pci_bus;
struct task_struct;
struct pci_dev;
struct msi_desc;
typedef void ia64_mv_setup_t (char **);
typedef void ia64_mv_cpu_init_t (void);
@ -79,7 +80,7 @@ typedef unsigned short ia64_mv_readw_relaxed_t (const volatile void __iomem *);
typedef unsigned int ia64_mv_readl_relaxed_t (const volatile void __iomem *);
typedef unsigned long ia64_mv_readq_relaxed_t (const volatile void __iomem *);
typedef int ia64_mv_setup_msi_irq_t (unsigned int irq, struct pci_dev *pdev);
typedef int ia64_mv_setup_msi_irq_t (struct pci_dev *pdev, struct msi_desc *);
typedef void ia64_mv_teardown_msi_irq_t (unsigned int irq);
static inline void