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| author | Mark A. Greer <mgreer@mvista.com> | 2006-06-20 23:15:36 +0200 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2006-06-21 07:01:32 +0200 |
| commit | 868ea0c9256b658b14603e1ad7361b81b92ccacd (patch) | |
| tree | 6d080ba156f8098277329f26f1d4e3a73cae2093 /include/asm-powerpc | |
| parent | [POWERPC] pseries: Print PCI slot location code on failure (diff) | |
| download | linux-868ea0c9256b658b14603e1ad7361b81b92ccacd.tar.xz linux-868ea0c9256b658b14603e1ad7361b81b92ccacd.zip | |
[POWERPC] mpic: add support for serial mode interrupts
On Tue, Jun 20, 2006 at 02:01:26PM +1000, Benjamin Herrenschmidt wrote:
> On Mon, 2006-06-19 at 13:08 -0700, Mark A. Greer wrote:
> > MPC10x-style interrupt controllers have a serial mode that allows
> > several interrupts to be clocked in through one INT signal.
> >
> > This patch adds the software support for that mode.
>
> You hard code the clock ratio... why not add a separate call to be
> called after mpic_init,
> something like mpic_set_serial_int(int mpic, int enable, int
> clock_ratio) ?
How's this?
--
MPC10x-style interrupt controllers have a serial mode that allows
several interrupts to be clocked in through one INT signal.
This patch adds the software support for that mode.
Signed-off-by: Mark A. Greer <mgreer@mvista.com>
--
arch/powerpc/sysdev/mpic.c | 20 ++++++++++++++++++++
include/asm-powerpc/mpic.h | 10 ++++++++++
2 files changed, 30 insertions(+)
--
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include/asm-powerpc')
| -rw-r--r-- | include/asm-powerpc/mpic.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/asm-powerpc/mpic.h b/include/asm-powerpc/mpic.h index 6b9e78142f4f..f0d22ac34b96 100644 --- a/include/asm-powerpc/mpic.h +++ b/include/asm-powerpc/mpic.h @@ -22,6 +22,10 @@ #define MPIC_GREG_GCONF_8259_PTHROU_DIS 0x20000000 #define MPIC_GREG_GCONF_BASE_MASK 0x000fffff #define MPIC_GREG_GLOBAL_CONF_1 0x00030 +#define MPIC_GREG_GLOBAL_CONF_1_SIE 0x08000000 +#define MPIC_GREG_GLOBAL_CONF_1_CLK_RATIO_MASK 0x70000000 +#define MPIC_GREG_GLOBAL_CONF_1_CLK_RATIO(r) \ + (((r) << 28) & MPIC_GREG_GLOBAL_CONF_1_CLK_RATIO_MASK) #define MPIC_GREG_VENDOR_0 0x00040 #define MPIC_GREG_VENDOR_1 0x00050 #define MPIC_GREG_VENDOR_2 0x00060 @@ -284,6 +288,12 @@ extern int mpic_get_one_irq(struct mpic *mpic, struct pt_regs *regs); /* This one gets to the primary mpic */ extern int mpic_get_irq(struct pt_regs *regs); +/* Set the EPIC clock ratio */ +void mpic_set_clk_ratio(struct mpic *mpic, u32 clock_ratio); + +/* Enable/Disable EPIC serial interrupt mode */ +void mpic_set_serial_int(struct mpic *mpic, int enable); + /* global mpic for pSeries */ extern struct mpic *pSeries_mpic; |