From cfe9a7f286f8db4316a25ac4471d91db8b387262 Mon Sep 17 00:00:00 2001 From: Glenn Miles Date: Fri, 13 Sep 2024 11:16:52 -0500 Subject: ppc/xive2: Allow 1-byte write of Target field in TIMA MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When running PowerVM, the console is littered with XIVE traces regarding invalid writes to TIMA address 0x100b6 due to a lack of support for writes to the "TARGET" field which was added for XIVE GEN2. To fix this, we add special op support for 1-byte writes to this field. Signed-off-by: Glenn Miles Signed-off-by: Michael Kowal Reviewed-by: Cédric Le Goater Signed-off-by: Nicholas Piggin --- hw/intc/xive2.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'hw/intc/xive2.c') diff --git a/hw/intc/xive2.c b/hw/intc/xive2.c index 26b6e72129..8d3d69a0db 100644 --- a/hw/intc/xive2.c +++ b/hw/intc/xive2.c @@ -585,6 +585,19 @@ void xive2_tm_push_os_ctx(XivePresenter *xptr, XiveTCTX *tctx, } } +static void xive2_tctx_set_target(XiveTCTX *tctx, uint8_t ring, uint8_t target) +{ + uint8_t *regs = &tctx->regs[ring]; + + regs[TM_T] = target; +} + +void xive2_tm_set_hv_target(XivePresenter *xptr, XiveTCTX *tctx, + hwaddr offset, uint64_t value, unsigned size) +{ + xive2_tctx_set_target(tctx, TM_QW3_HV_PHYS, value & 0xff); +} + /* * XIVE Router (aka. Virtualization Controller or IVRE) */ -- cgit 1.4.1