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| author | Thomas Gleixner <tglx@linutronix.de> | 2020-10-24 22:35:11 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2020-10-28 20:26:25 +0100 |
| commit | 8073c1ac82c12aaf1b475a3ce5328d43b3eaa4ae (patch) | |
| tree | 8aff60f5703ddc61bec57f57e5d0b99fd3e89aec /include/asm-generic | |
| parent | 3d7295eb3003aea9f89de35304b3a88ae4d5036b (diff) | |
| download | lwn-8073c1ac82c12aaf1b475a3ce5328d43b3eaa4ae.tar.gz lwn-8073c1ac82c12aaf1b475a3ce5328d43b3eaa4ae.zip | |
genirq/msi: Allow shadow declarations of msi_msg:: $member
Architectures like x86 have their MSI messages in various bits of the data,
address_lo and address_hi field. Composing or decomposing these messages
with bitmasks and shifts is possible, but unreadable gunk.
Allow architectures to provide an architecture specific representation for
each member of msi_msg. Provide empty defaults for each and stick them into
an union.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20201024213535.443185-12-dwmw2@infradead.org
Diffstat (limited to 'include/asm-generic')
| -rw-r--r-- | include/asm-generic/msi.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/asm-generic/msi.h b/include/asm-generic/msi.h index e6795f088bdd..25344de0e8f9 100644 --- a/include/asm-generic/msi.h +++ b/include/asm-generic/msi.h @@ -4,6 +4,8 @@ #include <linux/types.h> +#ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN + #ifndef NUM_MSI_ALLOC_SCRATCHPAD_REGS # define NUM_MSI_ALLOC_SCRATCHPAD_REGS 2 #endif @@ -30,4 +32,6 @@ typedef struct msi_alloc_info { #define GENERIC_MSI_DOMAIN_OPS 1 +#endif /* CONFIG_GENERIC_MSI_IRQ_DOMAIN */ + #endif |