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lguest: documentation III: Drivers

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Documentation: The Drivers

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Rusty Russell
2007-07-26 10:41:03 -07:00
committed by Linus Torvalds
parent b2b47c214f
commit e2c9784325
6 changed files with 562 additions and 39 deletions
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5
include/linux/lguest_bus.h
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@@ -15,11 +15,14 @@ struct lguest_device {
void *private;
};
/* By convention, each device can use irq index+1 if it wants to. */
/*D:380 Since interrupt numbers are arbitrary, we use a convention: each device
* can use the interrupt number corresponding to its index. The +1 is because
* interrupt 0 is not usable (it's actually the timer interrupt). */
static inline int lgdev_irq(const struct lguest_device *dev)
{
return dev->index + 1;
}
/*:*/
/* dma args must not be vmalloced! */
void lguest_send_dma(unsigned long key, struct lguest_dma *dma);