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Fri, 13 Sep 2024 16:17:16 +0000 (GMT) Received: from smtpav06.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7166A20040; Fri, 13 Sep 2024 16:17:15 +0000 (GMT) Received: from gfwr518.rchland.ibm.com (unknown [9.10.239.106]) by smtpav06.fra02v.mail.ibm.com (Postfix) with ESMTP; Fri, 13 Sep 2024 16:17:15 +0000 (GMT) From: Michael Kowal To: qemu-devel@nongnu.org Cc: qemu-ppc@nongnu.org, clg@kaod.org, fbarrat@linux.ibm.com, npiggin@gmail.com, milesg@linux.ibm.com Subject: [PATCH v4 07/14] ppc/xive2: Allow 1-byte write of Target field in TIMA Date: Fri, 13 Sep 2024 11:16:52 -0500 Message-Id: <20240913161659.1981-8-kowal@linux.ibm.com> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20240913161659.1981-1-kowal@linux.ibm.com> References: <20240913161659.1981-1-kowal@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: VUImiNKgyLr8uQh0Ti2Z0k3OI_x3vkpT X-Proofpoint-ORIG-GUID: 5lW6lc7DNj0Q6A8DJV-eO-81L7mXTpm3 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.60.29 definitions=2024-09-13_11,2024-09-13_02,2024-09-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 mlxlogscore=848 lowpriorityscore=0 suspectscore=0 priorityscore=1501 bulkscore=0 adultscore=0 impostorscore=0 clxscore=1015 malwarescore=0 mlxscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2408220000 definitions=main-2409130113 Received-SPF: pass client-ip=148.163.156.1; envelope-from=kowal@linux.ibm.com; helo=mx0a-001b2d01.pphosted.com X-Spam_score_int: -19 X-Spam_score: -2.0 X-Spam_bar: -- X-Spam_report: (-2.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Glenn Miles 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 --- include/hw/ppc/xive2.h | 2 ++ include/hw/ppc/xive_regs.h | 1 + hw/intc/xive.c | 2 ++ hw/intc/xive2.c | 13 +++++++++++++ 4 files changed, 18 insertions(+) diff --git a/include/hw/ppc/xive2.h b/include/hw/ppc/xive2.h index b7a7c33ddd..36bd0e747f 100644 --- a/include/hw/ppc/xive2.h +++ b/include/hw/ppc/xive2.h @@ -121,5 +121,7 @@ uint64_t xive2_tm_pull_os_ctx(XivePresenter *xptr, XiveTCTX *tctx, hwaddr offset, unsigned size); void xive2_tm_pull_os_ctx_ol(XivePresenter *xptr, XiveTCTX *tctx, hwaddr offset, uint64_t value, unsigned size); +void xive2_tm_set_hv_target(XivePresenter *xptr, XiveTCTX *tctx, + hwaddr offset, uint64_t value, unsigned size); #endif /* PPC_XIVE2_H */ diff --git a/include/hw/ppc/xive_regs.h b/include/hw/ppc/xive_regs.h index 27a744d50d..f8f05deafd 100644 --- a/include/hw/ppc/xive_regs.h +++ b/include/hw/ppc/xive_regs.h @@ -79,6 +79,7 @@ #define TM_INC 0x5 /* - + - + */ #define TM_LGS 0x5 /* + + + + */ /* Rename P10 */ #define TM_AGE 0x6 /* - + - + */ +#define TM_T 0x6 /* - + - + */ /* Rename P10 */ #define TM_PIPR 0x7 /* - + - + */ #define TM_OGEN 0xF /* - + - - */ /* P10 only */ diff --git a/hw/intc/xive.c b/hw/intc/xive.c index 8605dd618f..6229a6f870 100644 --- a/hw/intc/xive.c +++ b/hw/intc/xive.c @@ -546,6 +546,8 @@ static const XiveTmOp xive2_tm_operations[] = { NULL }, { XIVE_TM_HV_PAGE, TM_QW3_HV_PHYS + TM_WORD2, 1, NULL, xive_tm_vt_poll }, + { XIVE_TM_HV_PAGE, TM_QW3_HV_PHYS + TM_T, 1, xive2_tm_set_hv_target, + NULL }, /* MMIOs above 2K : special operations with side effects */ { XIVE_TM_OS_PAGE, TM_SPC_ACK_OS_REG, 2, NULL, 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) */