summaryrefslogtreecommitdiffstats
path: root/arch/powerpc/include/asm/xive.h
diff options
context:
space:
mode:
authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2018-01-12 03:39:27 +0100
committerMichael Ellerman <mpe@ellerman.id.au>2018-01-12 05:24:41 +0100
commit12c1f339cd49119e39063ae67f02d936f988c079 (patch)
treed27fe991c9851b89a549c4e13cfb7a243ab340d5 /arch/powerpc/include/asm/xive.h
parentpowerpc/pseries: Add H_GET_CPU_CHARACTERISTICS flags & wrapper (diff)
downloadlinux-12c1f339cd49119e39063ae67f02d936f988c079.tar.xz
linux-12c1f339cd49119e39063ae67f02d936f988c079.zip
powerpc/xive: Move definition of ESB bits
From xive.h to xive-regs.h since it's a HW register definition and it can be used from assembly Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/xive.h')
-rw-r--r--arch/powerpc/include/asm/xive.h35
1 files changed, 0 insertions, 35 deletions
diff --git a/arch/powerpc/include/asm/xive.h b/arch/powerpc/include/asm/xive.h
index 371fbebf1ec9..0e77005cf021 100644
--- a/arch/powerpc/include/asm/xive.h
+++ b/arch/powerpc/include/asm/xive.h
@@ -72,41 +72,6 @@ struct xive_q {
atomic_t pending_count;
};
-/*
- * "magic" Event State Buffer (ESB) MMIO offsets.
- *
- * Each interrupt source has a 2-bit state machine called ESB
- * which can be controlled by MMIO. It's made of 2 bits, P and
- * Q. P indicates that an interrupt is pending (has been sent
- * to a queue and is waiting for an EOI). Q indicates that the
- * interrupt has been triggered while pending.
- *
- * This acts as a coalescing mechanism in order to guarantee
- * that a given interrupt only occurs at most once in a queue.
- *
- * When doing an EOI, the Q bit will indicate if the interrupt
- * needs to be re-triggered.
- *
- * The following offsets into the ESB MMIO allow to read or
- * manipulate the PQ bits. They must be used with an 8-bytes
- * load instruction. They all return the previous state of the
- * interrupt (atomically).
- *
- * Additionally, some ESB pages support doing an EOI via a
- * store at 0 and some ESBs support doing a trigger via a
- * separate trigger page.
- */
-#define XIVE_ESB_STORE_EOI 0x400 /* Store */
-#define XIVE_ESB_LOAD_EOI 0x000 /* Load */
-#define XIVE_ESB_GET 0x800 /* Load */
-#define XIVE_ESB_SET_PQ_00 0xc00 /* Load */
-#define XIVE_ESB_SET_PQ_01 0xd00 /* Load */
-#define XIVE_ESB_SET_PQ_10 0xe00 /* Load */
-#define XIVE_ESB_SET_PQ_11 0xf00 /* Load */
-
-#define XIVE_ESB_VAL_P 0x2
-#define XIVE_ESB_VAL_Q 0x1
-
/* Global enable flags for the XIVE support */
extern bool __xive_enabled;