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authorMark A. Greer <mgreer@mvista.com>2006-06-21 01:15:36 +0400
committerPaul Mackerras <paulus@samba.org>2006-06-21 09:01:32 +0400
commit868ea0c9256b658b14603e1ad7361b81b92ccacd (patch)
tree6d080ba156f8098277329f26f1d4e3a73cae2093 /include/asm-powerpc/mpic.h
parent0aa8d15b01881ccaab5f2fb31eef33ced97ccb5f (diff)
downloadlinux-868ea0c9256b658b14603e1ad7361b81b92ccacd.tar.xz
[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/mpic.h')
-rw-r--r--include/asm-powerpc/mpic.h10
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;