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[Qemu-devel] [PATCH v3 10/18] ppc/xive: Introduce a xive_tctx_ipb_update
From: |
Cédric Le Goater |
Subject: |
[Qemu-devel] [PATCH v3 10/18] ppc/xive: Introduce a xive_tctx_ipb_update() helper |
Date: |
Wed, 31 Jul 2019 16:12:25 +0200 |
We will use it to resend missed interrupts when a vCPU context is
pushed a HW thread.
Signed-off-by: Cédric Le Goater <address@hidden>
---
include/hw/ppc/xive.h | 1 +
hw/intc/xive.c | 15 +++++++++++----
2 files changed, 12 insertions(+), 4 deletions(-)
diff --git a/include/hw/ppc/xive.h b/include/hw/ppc/xive.h
index b34e2ad43a82..4233773bae11 100644
--- a/include/hw/ppc/xive.h
+++ b/include/hw/ppc/xive.h
@@ -468,6 +468,7 @@ uint64_t xive_tctx_tm_read(XivePresenter *xptr, XiveTCTX
*tctx, hwaddr offset,
void xive_tctx_pic_print_info(XiveTCTX *tctx, Monitor *mon);
Object *xive_tctx_create(Object *cpu, XiveRouter *xrtr, Error **errp);
+void xive_tctx_ipb_update(XiveTCTX *tctx, uint8_t ring, uint8_t ipb);
static inline uint32_t xive_nvt_cam_line(uint8_t nvt_blk, uint32_t nvt_idx)
{
diff --git a/hw/intc/xive.c b/hw/intc/xive.c
index 6f74b4dcbbd4..8f6a29ff1f47 100644
--- a/hw/intc/xive.c
+++ b/hw/intc/xive.c
@@ -132,6 +132,15 @@ 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]);
@@ -333,8 +342,7 @@ 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 uint64_t xive_tm_pull_os_ctx(XivePresenter *xptr, XiveTCTX *tctx,
@@ -1360,8 +1368,7 @@ 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;
--
2.21.0
- [Qemu-devel] [PATCH v3 01/18] ppc/pnv: Introduce PowerNV machines with fixed CPU models, (continued)
- [Qemu-devel] [PATCH v3 01/18] ppc/pnv: Introduce PowerNV machines with fixed CPU models, Cédric Le Goater, 2019/07/31
- [Qemu-devel] [PATCH v3 02/18] tests/boot-serial-test: add support for all the PowerNV machines, Cédric Le Goater, 2019/07/31
- [Qemu-devel] [PATCH v3 03/18] ppc/xive: Introduce the XiveFabric and XivePresenter interfaces, Cédric Le Goater, 2019/07/31
- [Qemu-devel] [PATCH v3 04/18] ppc/pnv: Implement the XiveFabric and XivePresenter interfaces, Cédric Le Goater, 2019/07/31
- [Qemu-devel] [PATCH v3 05/18] ppc/spapr: Implement the XiveFabric and XivePresenter interfaces, Cédric Le Goater, 2019/07/31
- [Qemu-devel] [PATCH v3 06/18] ppc/xive: Use the XiveFabric and XivePresenter interfaces, Cédric Le Goater, 2019/07/31
- [Qemu-devel] [PATCH v3 07/18] ppc/xive: Extend the TIMA operation with a XivePresenter parameter, Cédric Le Goater, 2019/07/31
- [Qemu-devel] [PATCH v3 08/18] ppc/pnv: Clarify how the TIMA is accessed on a multichip system, Cédric Le Goater, 2019/07/31
- [Qemu-devel] [PATCH v3 09/18] ppc/xive: Move the TIMA operations to the controller model, Cédric Le Goater, 2019/07/31
- [Qemu-devel] [PATCH v3 10/18] ppc/xive: Introduce a xive_tctx_ipb_update() helper,
Cédric Le Goater <=
- [Qemu-devel] [PATCH v3 11/18] ppc/xive: Synthesize interrupt from the saved IPB in the NVT, Cédric Le Goater, 2019/07/31
- [Qemu-devel] [PATCH v3 12/18] ppc/pnv: Remove pnv_xive_vst_size() routine, Cédric Le Goater, 2019/07/31
- [Qemu-devel] [PATCH v3 13/18] ppc/pnv: Dump the XIVE NVT table, Cédric Le Goater, 2019/07/31
- [Qemu-devel] [PATCH v3 14/18] ppc/pnv: Skip empty slots of the XIVE NVT table, Cédric Le Goater, 2019/07/31
- [Qemu-devel] [PATCH v3 15/18] ppc/pnv: Introduce a pnv_xive_block_id() helper, Cédric Le Goater, 2019/07/31
- [Qemu-devel] [PATCH v3 16/18] ppc/pnv: Extend XivePresenter with a get_block_id() handler, Cédric Le Goater, 2019/07/31
- [Qemu-devel] [PATCH v3 17/18] ppc/pnv: Quiesce some XIVE errors, Cédric Le Goater, 2019/07/31
- [Qemu-devel] [PATCH v3 18/18] ppc/xive: Introduce a xive_os_cam_decode() helper, Cédric Le Goater, 2019/07/31