From c5b703ac2073de8b968ef058793db0294f6a2979 Mon Sep 17 00:00:00 2001 From: Avi Kivity Date: Mon, 5 Mar 2012 17:36:19 +0200 Subject: ioport: add destructor method to IORange Previously all callers had a containing object with a destructor that could be used to trigger cleanup of the IORange objects (typically just freeing the containing object), but a forthcoming memory API change doesn't fit this pattern. Rather than setting up a new global table, extend the ioport system to support destructors. Signed-off-by: Avi Kivity --- ioport.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'ioport.c') diff --git a/ioport.c b/ioport.c index 8a474d3..78a3b89 100644 --- a/ioport.c +++ b/ioport.c @@ -52,6 +52,7 @@ static void *ioport_opaque[MAX_IOPORTS]; static IOPortReadFunc *ioport_read_table[3][MAX_IOPORTS]; static IOPortWriteFunc *ioport_write_table[3][MAX_IOPORTS]; +static IOPortDestructor *ioport_destructor_table[MAX_IOPORTS]; static IOPortReadFunc default_ioport_readb, default_ioport_readw, default_ioport_readl; static IOPortWriteFunc default_ioport_writeb, default_ioport_writew, default_ioport_writel; @@ -225,6 +226,15 @@ static void ioport_writel_thunk(void *opaque, uint32_t addr, uint32_t data) ioport->ops->write(ioport, addr - ioport->base, 4, data); } +static void iorange_destructor_thunk(void *opaque) +{ + IORange *iorange = opaque; + + if (iorange->ops->destructor) { + iorange->ops->destructor(iorange); + } +} + void ioport_register(IORange *ioport) { register_ioport_read(ioport->base, ioport->len, 1, @@ -239,12 +249,17 @@ void ioport_register(IORange *ioport) ioport_writew_thunk, ioport); register_ioport_write(ioport->base, ioport->len, 4, ioport_writel_thunk, ioport); + ioport_destructor_table[ioport->base] = iorange_destructor_thunk; } void isa_unassign_ioport(pio_addr_t start, int length) { int i; + if (ioport_destructor_table[start]) { + ioport_destructor_table[start](ioport_opaque[start]); + ioport_destructor_table[start] = NULL; + } for(i = start; i < start + length; i++) { ioport_read_table[0][i] = NULL; ioport_read_table[1][i] = NULL; -- cgit v1.1