diff options
| author | Cédric Le Goater <clg@kaod.org> | 2019-11-25 07:58:16 +0100 |
|---|---|---|
| committer | David Gibson <david@gibson.dropbear.id.au> | 2019-12-17 10:39:48 +1100 |
| commit | a5b841f18c1ffdf306f48ff6baccf5193d368c0b (patch) | |
| tree | 28c56c8f336bdeb26b871832c26a96db1028f130 /hw | |
| parent | 8b3aaaa1a9c2182ed9e3c406c90bb4257b43e753 (diff) | |
ppc/xive: Introduce a xive_tctx_ipb_update() helper
We will use it to resend missed interrupts when a vCPU context is
pushed on a HW thread.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20191125065820.927-17-clg@kaod.org>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/intc/xive.c | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/hw/intc/xive.c b/hw/intc/xive.c index 4bff3abdc3..7047e45dac 100644 --- a/hw/intc/xive.c +++ b/hw/intc/xive.c @@ -47,12 +47,6 @@ static uint8_t ipb_to_pipr(uint8_t ibp) return ibp ? clz32((uint32_t)ibp << 24) : 0xff; } -static void ipb_update(uint8_t *regs, uint8_t priority) -{ - regs[TM_IPB] |= priority_to_ipb(priority); - regs[TM_PIPR] = ipb_to_pipr(regs[TM_IPB]); -} - static uint8_t exception_mask(uint8_t ring) { switch (ring) { @@ -135,6 +129,15 @@ static void xive_tctx_set_cppr(XiveTCTX *tctx, uint8_t ring, uint8_t cppr) xive_tctx_notify(tctx, ring); } +void xive_tctx_ipb_update(XiveTCTX *tctx, uint8_t ring, uint8_t ipb) +{ + uint8_t *regs = &tctx->regs[ring]; + + regs[TM_IPB] |= ipb; + regs[TM_PIPR] = ipb_to_pipr(regs[TM_IPB]); + xive_tctx_notify(tctx, ring); +} + static inline uint32_t xive_tctx_word2(uint8_t *ring) { return *((uint32_t *) &ring[TM_WORD2]); @@ -336,8 +339,7 @@ static void xive_tm_set_os_cppr(XivePresenter *xptr, XiveTCTX *tctx, static void xive_tm_set_os_pending(XivePresenter *xptr, XiveTCTX *tctx, hwaddr offset, uint64_t value, unsigned size) { - ipb_update(&tctx->regs[TM_QW1_OS], value & 0xff); - xive_tctx_notify(tctx, TM_QW1_OS); + xive_tctx_ipb_update(tctx, TM_QW1_OS, priority_to_ipb(value & 0xff)); } static void xive_os_cam_decode(uint32_t cam, uint8_t *nvt_blk, @@ -1429,8 +1431,7 @@ static bool xive_presenter_notify(uint8_t format, /* handle CPU exception delivery */ if (count) { - ipb_update(&match.tctx->regs[match.ring], priority); - xive_tctx_notify(match.tctx, match.ring); + xive_tctx_ipb_update(match.tctx, match.ring, priority_to_ipb(priority)); } return !!count; |