From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id B35F9C433EF for ; Mon, 31 Jan 2022 11:48:08 +0000 (UTC) Received: from localhost ([::1]:50844 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nEVAF-0006vQ-K6 for qemu-devel@archiver.kernel.org; Mon, 31 Jan 2022 06:48:07 -0500 Received: from eggs.gnu.org ([209.51.188.92]:34380) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nEUYk-00064x-Eh; Mon, 31 Jan 2022 06:09:26 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:7746 helo=mx0a-001b2d01.pphosted.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nEUYe-00055u-0U; Mon, 31 Jan 2022 06:09:22 -0500 Received: from pps.filterd (m0098413.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.1.2/8.16.1.2) with SMTP id 20V81lm1026105; Mon, 31 Jan 2022 11:08:43 GMT Received: from ppma04fra.de.ibm.com (6a.4a.5195.ip4.static.sl-reverse.com [149.81.74.106]) by mx0b-001b2d01.pphosted.com with ESMTP id 3dxbwa39u2-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 31 Jan 2022 11:08:42 +0000 Received: from pps.filterd (ppma04fra.de.ibm.com [127.0.0.1]) by ppma04fra.de.ibm.com (8.16.1.2/8.16.1.2) with SMTP id 20VB2NoF019476; Mon, 31 Jan 2022 11:08:41 GMT Received: from b06cxnps4074.portsmouth.uk.ibm.com (d06relay11.portsmouth.uk.ibm.com [9.149.109.196]) by ppma04fra.de.ibm.com with ESMTP id 3dvw791ug3-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 31 Jan 2022 11:08:41 +0000 Received: from d06av21.portsmouth.uk.ibm.com (d06av21.portsmouth.uk.ibm.com [9.149.105.232]) by b06cxnps4074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 20VB8ccD44499246 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 31 Jan 2022 11:08:38 GMT Received: from d06av21.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 89D415204F; Mon, 31 Jan 2022 11:08:38 +0000 (GMT) Received: from smtp.tlslab.ibm.com (unknown [9.101.4.1]) by d06av21.portsmouth.uk.ibm.com (Postfix) with SMTP id 3579C52069; Mon, 31 Jan 2022 11:08:38 +0000 (GMT) Received: from yukon.ibmuc.com (unknown [9.171.57.185]) by smtp.tlslab.ibm.com (Postfix) with ESMTP id 62D722201C1; Mon, 31 Jan 2022 12:08:37 +0100 (CET) From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= To: qemu-ppc@nongnu.org, qemu-devel@nongnu.org Subject: [PULL 29/41] target/ppc: Simplify powerpc_excp_books Date: Mon, 31 Jan 2022 12:07:59 +0100 Message-Id: <20220131110811.619053-30-clg@kaod.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220131110811.619053-1-clg@kaod.org> References: <20220131110811.619053-1-clg@kaod.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-GUID: rfrxlTVVnyJrlkwm2oJfZ2hd3_GAhsLT X-Proofpoint-ORIG-GUID: rfrxlTVVnyJrlkwm2oJfZ2hd3_GAhsLT X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.816,Hydra:6.0.425,FMLib:17.11.62.513 definitions=2022-01-31_04,2022-01-28_01,2021-12-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 mlxscore=0 lowpriorityscore=0 bulkscore=0 clxscore=1034 priorityscore=1501 adultscore=0 impostorscore=0 spamscore=0 mlxlogscore=637 suspectscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2201110000 definitions=main-2201310074 Received-SPF: softfail client-ip=148.163.158.5; envelope-from=clg@kaod.org; helo=mx0a-001b2d01.pphosted.com X-Spam_score_int: -8 X-Spam_score: -0.9 X-Spam_bar: / X-Spam_report: (-0.9 / 5.0 requ) BAYES_00=-1.9, KHOP_HELO_FCRDNS=0.369, SPF_HELO_NONE=0.001, SPF_SOFTFAIL=0.665, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no 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: , Cc: Peter Maydell , Richard Henderson , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= , Fabiano Rosas Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Fabiano Rosas Differences from the generic powerpc_excp code: - Not BookE, so some MSR bits are cleared at interrupt dispatch; - Always uses HV_EMU if the CPU has MSR_HV; - Exceptions always delivered in 64 bit. Exceptions used: POWERPC_EXCP_ALIGN POWERPC_EXCP_DECR POWERPC_EXCP_DSEG POWERPC_EXCP_DSI POWERPC_EXCP_EXTERNAL POWERPC_EXCP_FPU POWERPC_EXCP_FU POWERPC_EXCP_HDECR POWERPC_EXCP_HDSI POWERPC_EXCP_HISI POWERPC_EXCP_HVIRT POWERPC_EXCP_HV_EMU POWERPC_EXCP_HV_FU POWERPC_EXCP_ISEG POWERPC_EXCP_ISI POWERPC_EXCP_MAINT POWERPC_EXCP_MCHECK POWERPC_EXCP_PERFM POWERPC_EXCP_PROGRAM POWERPC_EXCP_RESET POWERPC_EXCP_SDOOR_HV POWERPC_EXCP_SYSCALL POWERPC_EXCP_SYSCALL_VECTORED POWERPC_EXCP_THERM POWERPC_EXCP_TRACE POWERPC_EXCP_VPU POWERPC_EXCP_VPUA POWERPC_EXCP_VSXU POWERPC_EXCP_HV_MAINT POWERPC_EXCP_SDOOR (I added the two above that were not being considered. They used to be "Invalid exception". Now they become "Unimplemented exception" which is more accurate.) Signed-off-by: Fabiano Rosas Reviewed-by: C=C3=A9dric Le Goater Message-Id: <20220124184605.999353-3-farosas@linux.ibm.com> Signed-off-by: C=C3=A9dric Le Goater --- target/ppc/excp_helper.c | 161 ++++----------------------------------- 1 file changed, 14 insertions(+), 147 deletions(-) diff --git a/target/ppc/excp_helper.c b/target/ppc/excp_helper.c index a2a605f8f59e..161b207bc7b8 100644 --- a/target/ppc/excp_helper.c +++ b/target/ppc/excp_helper.c @@ -551,6 +551,7 @@ static void powerpc_excp_40x(PowerPCCPU *cpu, int exc= p) powerpc_set_excp_state(cpu, vector, new_msr); } =20 +#ifdef TARGET_PPC64 static void powerpc_excp_books(PowerPCCPU *cpu, int excp) { CPUState *cs =3D CPU(cpu); @@ -568,11 +569,7 @@ static void powerpc_excp_books(PowerPCCPU *cpu, int = excp) excp, env->error_code); =20 /* new srr1 value excluding must-be-zero bits */ - if (excp_model =3D=3D POWERPC_EXCP_BOOKE) { - msr =3D env->msr; - } else { - msr =3D env->msr & ~0x783f0000ULL; - } + msr =3D env->msr & ~0x783f0000ULL; =20 /* * new interrupt handler msr preserves existing HV and ME unless @@ -593,29 +590,13 @@ static void powerpc_excp_books(PowerPCCPU *cpu, int= excp) } =20 /* - * Hypervisor emulation assistance interrupt only exists on server - * arch 2.05 server or later. We also don't want to generate it if - * we don't have HVB in msr_mask (PAPR mode). + * We don't want to generate a Hypervisor Emulation Assistance + * Interrupt if we don't have HVB in msr_mask (PAPR mode). */ - if (excp =3D=3D POWERPC_EXCP_HV_EMU -#if defined(TARGET_PPC64) - && !(mmu_is_64bit(env->mmu_model) && (env->msr_mask & MSR_HVB)) -#endif /* defined(TARGET_PPC64) */ - - ) { + if (excp =3D=3D POWERPC_EXCP_HV_EMU && !(env->msr_mask & MSR_HVB)) { excp =3D POWERPC_EXCP_PROGRAM; } =20 -#ifdef TARGET_PPC64 - /* - * SPEU and VPU share the same IVOR but they exist in different - * processors. SPEU is e500v1/2 only and VPU is e6500 only. - */ - if (excp_model =3D=3D POWERPC_EXCP_BOOKE && excp =3D=3D POWERPC_EXCP= _VPU) { - excp =3D POWERPC_EXCP_SPEU; - } -#endif - vector =3D env->excp_vectors[excp]; if (vector =3D=3D (target_ulong)-1ULL) { cpu_abort(cs, "Raised an exception without defined vector %d\n", @@ -625,22 +606,6 @@ static void powerpc_excp_books(PowerPCCPU *cpu, int = excp) vector |=3D env->excp_prefix; =20 switch (excp) { - case POWERPC_EXCP_CRITICAL: /* Critical input = */ - switch (excp_model) { - case POWERPC_EXCP_40x: - srr0 =3D SPR_40x_SRR2; - srr1 =3D SPR_40x_SRR3; - break; - case POWERPC_EXCP_BOOKE: - srr0 =3D SPR_BOOKE_CSRR0; - srr1 =3D SPR_BOOKE_CSRR1; - break; - case POWERPC_EXCP_G2: - break; - default: - goto excp_invalid; - } - break; case POWERPC_EXCP_MCHECK: /* Machine check exception = */ if (msr_me =3D=3D 0) { /* @@ -817,50 +782,8 @@ static void powerpc_excp_books(PowerPCCPU *cpu, int = excp) env->ctr =3D msr; break; case POWERPC_EXCP_FPU: /* Floating-point unavailable exception= */ - case POWERPC_EXCP_APU: /* Auxiliary processor unavailable = */ case POWERPC_EXCP_DECR: /* Decrementer exception = */ break; - case POWERPC_EXCP_FIT: /* Fixed-interval timer interrupt = */ - /* FIT on 4xx */ - trace_ppc_excp_print("FIT"); - break; - case POWERPC_EXCP_WDT: /* Watchdog timer interrupt = */ - trace_ppc_excp_print("WDT"); - switch (excp_model) { - case POWERPC_EXCP_BOOKE: - srr0 =3D SPR_BOOKE_CSRR0; - srr1 =3D SPR_BOOKE_CSRR1; - break; - default: - break; - } - break; - case POWERPC_EXCP_DTLB: /* Data TLB error = */ - case POWERPC_EXCP_ITLB: /* Instruction TLB error = */ - break; - case POWERPC_EXCP_DEBUG: /* Debug interrupt = */ - if (env->flags & POWERPC_FLAG_DE) { - /* FIXME: choose one or the other based on CPU type */ - srr0 =3D SPR_BOOKE_DSRR0; - srr1 =3D SPR_BOOKE_DSRR1; - - env->spr[SPR_BOOKE_CSRR0] =3D env->nip; - env->spr[SPR_BOOKE_CSRR1] =3D msr; - - /* DBSR already modified by caller */ - } else { - cpu_abort(cs, "Debug exception triggered on unsupported mode= l\n"); - } - break; - case POWERPC_EXCP_SPEU: /* SPE/embedded floating-point unavailable= /VPU */ - env->spr[SPR_BOOKE_ESR] =3D ESR_SPV; - break; - case POWERPC_EXCP_DOORI: /* Embedded doorbell interrupt = */ - break; - case POWERPC_EXCP_DOORCI: /* Embedded doorbell critical interrupt= */ - srr0 =3D SPR_BOOKE_CSRR0; - srr1 =3D SPR_BOOKE_CSRR1; - break; case POWERPC_EXCP_RESET: /* System reset exception = */ /* A power-saving exception sets ME, otherwise it is unchanged *= / if (msr_pow) { @@ -890,8 +813,6 @@ static void powerpc_excp_books(PowerPCCPU *cpu, int e= xcp) /* fall through */ case POWERPC_EXCP_HDECR: /* Hypervisor decrementer exception = */ case POWERPC_EXCP_HDSI: /* Hypervisor data storage exception = */ - case POWERPC_EXCP_HDSEG: /* Hypervisor data segment exception = */ - case POWERPC_EXCP_HISEG: /* Hypervisor instruction segment excep= tion */ case POWERPC_EXCP_SDOOR_HV: /* Hypervisor Doorbell interrupt = */ case POWERPC_EXCP_HV_EMU: case POWERPC_EXCP_HVIRT: /* Hypervisor virtualization = */ @@ -903,70 +824,25 @@ static void powerpc_excp_books(PowerPCCPU *cpu, int= excp) case POWERPC_EXCP_VPU: /* Vector unavailable exception = */ case POWERPC_EXCP_VSXU: /* VSX unavailable exception = */ case POWERPC_EXCP_FU: /* Facility unavailable exception = */ -#ifdef TARGET_PPC64 env->spr[SPR_FSCR] |=3D ((target_ulong)env->error_code << 56); -#endif break; case POWERPC_EXCP_HV_FU: /* Hypervisor Facility Unavailable Exce= ption */ -#ifdef TARGET_PPC64 env->spr[SPR_HFSCR] |=3D ((target_ulong)env->error_code << FSCR_= IC_POS); srr0 =3D SPR_HSRR0; srr1 =3D SPR_HSRR1; new_msr |=3D (target_ulong)MSR_HVB; new_msr |=3D env->msr & ((target_ulong)1 << MSR_RI); -#endif - break; - case POWERPC_EXCP_PIT: /* Programmable interval timer interrup= t */ - trace_ppc_excp_print("PIT"); - break; - case POWERPC_EXCP_IFTLB: /* Instruction fetch TLB error = */ - case POWERPC_EXCP_DLTLB: /* Data load TLB miss = */ - case POWERPC_EXCP_DSTLB: /* Data store TLB miss = */ - switch (excp_model) { - case POWERPC_EXCP_602: - case POWERPC_EXCP_603: - case POWERPC_EXCP_G2: - /* Swap temporary saved registers with GPRs */ - if (!(new_msr & ((target_ulong)1 << MSR_TGPR))) { - new_msr |=3D (target_ulong)1 << MSR_TGPR; - hreg_swap_gpr_tgpr(env); - } - /* fall through */ - case POWERPC_EXCP_7x5: - ppc_excp_debug_sw_tlb(env, excp); - - msr |=3D env->crf[0] << 28; - msr |=3D env->error_code; /* key, D/I, S/L bits */ - /* Set way using a LRU mechanism */ - msr |=3D ((env->last_way + 1) & (env->nb_ways - 1)) << 17; - break; - default: - cpu_abort(cs, "Invalid TLB miss exception\n"); - break; - } break; - case POWERPC_EXCP_EFPDI: /* Embedded floating-point data interru= pt */ - case POWERPC_EXCP_EFPRI: /* Embedded floating-point round interr= upt */ - case POWERPC_EXCP_EPERFM: /* Embedded performance monitor interru= pt */ - case POWERPC_EXCP_IO: /* IO error exception = */ - case POWERPC_EXCP_RUNM: /* Run mode exception = */ - case POWERPC_EXCP_EMUL: /* Emulation trap exception = */ - case POWERPC_EXCP_FPA: /* Floating-point assist exception = */ - case POWERPC_EXCP_DABR: /* Data address breakpoint = */ - case POWERPC_EXCP_IABR: /* Instruction address breakpoint = */ - case POWERPC_EXCP_SMI: /* System management interrupt = */ case POWERPC_EXCP_THERM: /* Thermal interrupt = */ case POWERPC_EXCP_PERFM: /* Embedded performance monitor interru= pt */ case POWERPC_EXCP_VPUA: /* Vector assist exception = */ - case POWERPC_EXCP_SOFTP: /* Soft patch exception = */ case POWERPC_EXCP_MAINT: /* Maintenance exception = */ - case POWERPC_EXCP_MEXTBR: /* Maskable external breakpoint = */ - case POWERPC_EXCP_NMEXTBR: /* Non maskable external breakpoint = */ + case POWERPC_EXCP_SDOOR: /* Doorbell interrupt = */ + case POWERPC_EXCP_HV_MAINT: /* Hypervisor Maintenance exception = */ cpu_abort(cs, "%s exception not implemented\n", powerpc_excp_name(excp)); break; default: - excp_invalid: cpu_abort(cs, "Invalid PowerPC exception %d. Aborting\n", excp); break; } @@ -991,22 +867,7 @@ static void powerpc_excp_books(PowerPCCPU *cpu, int = excp) new_msr |=3D (target_ulong)1 << MSR_LE; } =20 -#if defined(TARGET_PPC64) - if (excp_model =3D=3D POWERPC_EXCP_BOOKE) { - if (env->spr[SPR_BOOKE_EPCR] & EPCR_ICM) { - /* Cat.64-bit: EPCR.ICM is copied to MSR.CM */ - new_msr |=3D (target_ulong)1 << MSR_CM; - } else { - vector =3D (uint32_t)vector; - } - } else { - if (!msr_isf && !mmu_is_64bit(env->mmu_model)) { - vector =3D (uint32_t)vector; - } else { - new_msr |=3D (target_ulong)1 << MSR_SF; - } - } -#endif + new_msr |=3D (target_ulong)1 << MSR_SF; =20 if (excp !=3D POWERPC_EXCP_SYSCALL_VECTORED) { /* Save PC */ @@ -1021,6 +882,12 @@ static void powerpc_excp_books(PowerPCCPU *cpu, int= excp) =20 powerpc_set_excp_state(cpu, vector, new_msr); } +#else +static inline void powerpc_excp_books(PowerPCCPU *cpu, int excp) +{ + g_assert_not_reached(); +} +#endif =20 /* * Note that this function should be greatly optimized when called --=20 2.34.1