From nobody Sun Nov 24 06:12:33 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=reject dis=none) header.from=linux.ibm.com ARC-Seal: i=1; a=rsa-sha256; t=1726678342; cv=none; d=zohomail.com; s=zohoarc; b=bKUJsJVsfje2AUUaRrvnWGIp9U0GRDOC311gos3YzZB3F1R97bopPMiBarYKHS4CJTjhzjIDUwNawC5vdeGwykthYkUAgIWxZWSKl0PLTnPy2nNUHznZ1fhziudQ/orpky0abdJkClpoMWh5GGRXjK8Vxt8VSjUDrFVQIqLpVbs= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1726678342; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=RBl27lVRQwuS7XPzc9I+Jwjap3fEp6EqKfIFk9ZGTSA=; b=MDsEwTpxAN0mR8U6AGgu5e65ob5Ddd0c5XE+hfjQPOeUibiKR+qVtrUwXpYfU87pE6VXYp9ylekfGkjxhsOmtJufS3zs/7dcCfVkbNBJ7v9pAY7jzkIW2KhZXrevU7bidIEHQFVCZSYekW/HI04BW70TTD1LLL3xQlaCbOoVYko= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=reject dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1726678341878602.7564459998512; Wed, 18 Sep 2024 09:52:21 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sqxu1-0007tn-M8; Wed, 18 Sep 2024 12:51:41 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sqxtv-0007ff-Q1; Wed, 18 Sep 2024 12:51:35 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sqxtr-0007kw-0D; Wed, 18 Sep 2024 12:51:34 -0400 Received: from pps.filterd (m0360072.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 48IEZ9Oc013578; Wed, 18 Sep 2024 16:51:20 GMT Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 41n41aq448-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 18 Sep 2024 16:51:19 +0000 (GMT) Received: from m0360072.ppops.net (m0360072.ppops.net [127.0.0.1]) by pps.reinject (8.18.0.8/8.18.0.8) with ESMTP id 48IGpJha000970; Wed, 18 Sep 2024 16:51:19 GMT Received: from ppma12.dal12v.mail.ibm.com (dc.9e.1632.ip4.static.sl-reverse.com [50.22.158.220]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 41n41aq444-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 18 Sep 2024 16:51:19 +0000 (GMT) Received: from pps.filterd (ppma12.dal12v.mail.ibm.com [127.0.0.1]) by ppma12.dal12v.mail.ibm.com (8.18.1.2/8.18.1.2) with ESMTP id 48IG3Da0001892; Wed, 18 Sep 2024 16:51:18 GMT Received: from smtprelay07.fra02v.mail.ibm.com ([9.218.2.229]) by ppma12.dal12v.mail.ibm.com (PPS) with ESMTPS id 41nmtuvhwn-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 18 Sep 2024 16:51:18 +0000 Received: from smtpav06.fra02v.mail.ibm.com (smtpav06.fra02v.mail.ibm.com [10.20.54.105]) by smtprelay07.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 48IGpE3D36962806 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 18 Sep 2024 16:51:15 GMT Received: from smtpav06.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id C4D4220049; Wed, 18 Sep 2024 16:51:14 +0000 (GMT) Received: from smtpav06.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id B4C2720040; Wed, 18 Sep 2024 16:51:12 +0000 (GMT) Received: from gfwr515.rchland.ibm.com (unknown [9.10.239.103]) by smtpav06.fra02v.mail.ibm.com (Postfix) with ESMTP; Wed, 18 Sep 2024 16:51:12 +0000 (GMT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from :to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; s=pp1; bh=RBl27lVRQwuS7 XPzc9I+Jwjap3fEp6EqKfIFk9ZGTSA=; b=c+1/sr8atu+G+FdFB/i2/w99rqsTy 02YxtNwSPw11wZwwpdotRxc2c0+JYPhjfgmiuy89sJq5DWMWjjNGGUuBxrPSpE93 Nv9LSmJgqsheZG13GB/usu/7NKP+8h09Fpol7WoHw8siBp40ORacXj0tex3ylrgO FRE6nU3ByOrYc+YsF5CE4ypwBSrnGlOdEYzUhjeQeFcBmkil0STei7y1h3wEiNmH 5ZIOjLpdh8Z1dRLITEJK5KIF0ZSmaA4fok8ELKm9hJENNuFC78WfzKKt2vsAlVts NPg6Z//U7y+r0SSVN9BVhRCfA+qDGH4DKnUo4MrshuScQS2bb1U7NBf5A== From: Chalapathi V To: qemu-devel@nongnu.org Cc: qemu-ppc@nongnu.org, fbarrat@linux.ibm.com, npiggin@gmail.com, clg@kaod.org, calebs@linux.ibm.com, chalapathi.v@ibm.com, chalapathi.v@linux.ibm.com, saif.abrar@linux.ibm.com, dantan@linux.vnet.ibm.com, milesg@linux.ibm.com, philmd@linaro.org, alistair@alistair23.me Subject: [PATCH v3 3/3] hw/ssi/pnv_spi: Use local var seq_index instead of get_seq_index(). Date: Wed, 18 Sep 2024 11:50:45 -0500 Message-Id: <20240918165045.21298-4-chalapathi.v@linux.ibm.com> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20240918165045.21298-1-chalapathi.v@linux.ibm.com> References: <20240918165045.21298-1-chalapathi.v@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-GUID: -VLKMdax0HoF6gw7vsT8n7pYpw6jlDFD X-Proofpoint-ORIG-GUID: LP4IToh9U-vHkHqrNnjU8cWbGIwtVe-G X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1051,Hydra:6.0.680,FMLib:17.12.60.29 definitions=2024-09-18_10,2024-09-18_01,2024-09-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 lowpriorityscore=0 suspectscore=0 mlxscore=0 mlxlogscore=802 bulkscore=0 impostorscore=0 phishscore=0 priorityscore=1501 spamscore=0 clxscore=1015 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2408220000 definitions=main-2409180110 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=148.163.158.5; envelope-from=chalapathi.v@linux.ibm.com; helo=mx0b-001b2d01.pphosted.com X-Spam_score_int: -26 X-Spam_score: -2.7 X-Spam_bar: -- X-Spam_report: (-2.7 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @ibm.com) X-ZM-MESSAGEID: 1726678343193116600 Content-Type: text/plain; charset="utf-8" Use a local variable seq_index instead of repeatedly caling get_seq_index() method. Signed-off-by: Chalapathi V --- hw/ssi/pnv_spi.c | 61 ++++++++++++++++++++++++------------------------ 1 file changed, 31 insertions(+), 30 deletions(-) diff --git a/hw/ssi/pnv_spi.c b/hw/ssi/pnv_spi.c index 2fd5aa0a96..962115f40f 100644 --- a/hw/ssi/pnv_spi.c +++ b/hw/ssi/pnv_spi.c @@ -210,15 +210,8 @@ static void transfer(PnvSpi *s) fifo8_reset(&s->rx_fifo); } =20 -static inline uint8_t get_seq_index(PnvSpi *s) -{ - return GETFIELD(SPI_STS_SEQ_INDEX, s->status); -} - static inline void next_sequencer_fsm(PnvSpi *s) { - uint8_t seq_index =3D get_seq_index(s); - s->status =3D SETFIELD(SPI_STS_SEQ_INDEX, s->status, (seq_index + 1)); s->status =3D SETFIELD(SPI_STS_SEQ_FSM, s->status, SEQ_STATE_INDEX_INC= REMENT); } =20 @@ -647,6 +640,7 @@ static void operation_sequencer(PnvSpi *s) bool stop =3D false; /* Flag to stop the sequencer */ uint8_t opcode =3D 0; uint8_t masked_opcode =3D 0; + uint8_t seq_index; =20 /* * Clear the sequencer FSM error bit - general_SPI_status[3] @@ -660,12 +654,13 @@ static void operation_sequencer(PnvSpi *s) if (GETFIELD(SPI_STS_SEQ_FSM, s->status) =3D=3D SEQ_STATE_IDLE) { s->status =3D SETFIELD(SPI_STS_SEQ_INDEX, s->status, 0); } + seq_index =3D GETFIELD(SPI_STS_SEQ_INDEX, s->status); /* * There are only 8 possible operation IDs to iterate through though * some operations may cause more than one frame to be sequenced. */ - while (get_seq_index(s) < NUM_SEQ_OPS) { - opcode =3D s->seq_op[get_seq_index(s)]; + while (seq_index < NUM_SEQ_OPS) { + opcode =3D s->seq_op[seq_index]; /* Set sequencer state to decode */ s->status =3D SETFIELD(SPI_STS_SEQ_FSM, s->status, SEQ_STATE_DECOD= E); /* @@ -682,7 +677,7 @@ static void operation_sequencer(PnvSpi *s) case SEQ_OP_STOP: s->status =3D SETFIELD(SPI_STS_SEQ_FSM, s->status, SEQ_STATE_E= XECUTE); /* A stop operation in any position stops the sequencer */ - trace_pnv_spi_sequencer_op("STOP", get_seq_index(s)); + trace_pnv_spi_sequencer_op("STOP", seq_index); =20 stop =3D true; s->status =3D SETFIELD(SPI_STS_SHIFTER_FSM, s->status, FSM_IDL= E); @@ -693,7 +688,7 @@ static void operation_sequencer(PnvSpi *s) =20 case SEQ_OP_SELECT_SLAVE: s->status =3D SETFIELD(SPI_STS_SEQ_FSM, s->status, SEQ_STATE_E= XECUTE); - trace_pnv_spi_sequencer_op("SELECT_SLAVE", get_seq_index(s)); + trace_pnv_spi_sequencer_op("SELECT_SLAVE", seq_index); /* * This device currently only supports a single responder * connection at position 0. De-selecting a responder is fine @@ -704,8 +699,7 @@ static void operation_sequencer(PnvSpi *s) if (s->responder_select =3D=3D 0) { trace_pnv_spi_shifter_done(); qemu_set_irq(s->cs_line[0], 1); - s->status =3D SETFIELD(SPI_STS_SEQ_INDEX, s->status, - (get_seq_index(s) + 1)); + seq_index++; s->status =3D SETFIELD(SPI_STS_SHIFTER_FSM, s->status, FSM= _DONE); } else if (s->responder_select !=3D 1) { qemu_log_mask(LOG_GUEST_ERROR, "Slave selection other than= 1 " @@ -732,13 +726,14 @@ static void operation_sequencer(PnvSpi *s) * applies once a valid responder select has occurred. */ s->shift_n1_done =3D false; + seq_index++; next_sequencer_fsm(s); } break; =20 case SEQ_OP_SHIFT_N1: s->status =3D SETFIELD(SPI_STS_SEQ_FSM, s->status, SEQ_STATE_E= XECUTE); - trace_pnv_spi_sequencer_op("SHIFT_N1", get_seq_index(s)); + trace_pnv_spi_sequencer_op("SHIFT_N1", seq_index); /* * Only allow a shift_n1 when the state is not IDLE or DONE. * In either of those two cases the sequencer is not in a prop= er @@ -770,8 +765,9 @@ static void operation_sequencer(PnvSpi *s) * transmission to the responder without requiring a refil= l of * the TDR between the two operations. */ - if (PNV_SPI_MASKED_OPCODE(s->seq_op[get_seq_index(s) + 1]) - =3D=3D SEQ_OP_SHIFT_N2) { + if ((seq_index !=3D 7) && + PNV_SPI_MASKED_OPCODE(s->seq_op[(seq_index + 1)]) =3D= =3D + SEQ_OP_SHIFT_N2) { send_n1_alone =3D false; } s->status =3D SETFIELD(SPI_STS_SHIFTER_FSM, s->status, @@ -793,8 +789,7 @@ static void operation_sequencer(PnvSpi *s) s->shift_n1_done =3D true; s->status =3D SETFIELD(SPI_STS_SHIFTER_FSM, s->sta= tus, FSM_SHIFT_N2); - s->status =3D SETFIELD(SPI_STS_SEQ_INDEX, s->statu= s, - (get_seq_index(s) + 1)); + seq_index++; } else { /* * This is case (1) or (2) so the sequencer needs = to @@ -806,6 +801,7 @@ static void operation_sequencer(PnvSpi *s) } else { /* Ok to move on to the next index */ s->shift_n1_done =3D true; + seq_index++; next_sequencer_fsm(s); } } @@ -813,7 +809,7 @@ static void operation_sequencer(PnvSpi *s) =20 case SEQ_OP_SHIFT_N2: s->status =3D SETFIELD(SPI_STS_SEQ_FSM, s->status, SEQ_STATE_E= XECUTE); - trace_pnv_spi_sequencer_op("SHIFT_N2", get_seq_index(s)); + trace_pnv_spi_sequencer_op("SHIFT_N2", seq_index); if (!s->shift_n1_done) { qemu_log_mask(LOG_GUEST_ERROR, "Shift_N2 is not allowed if= a " "Shift_N1 is not done, shifter state =3D 0x%= llx", @@ -841,6 +837,7 @@ static void operation_sequencer(PnvSpi *s) FSM_WAIT); } else { /* Ok to move on to the next index */ + seq_index++; next_sequencer_fsm(s); } } @@ -848,7 +845,7 @@ static void operation_sequencer(PnvSpi *s) =20 case SEQ_OP_BRANCH_IFNEQ_RDR: s->status =3D SETFIELD(SPI_STS_SEQ_FSM, s->status, SEQ_STATE_E= XECUTE); - trace_pnv_spi_sequencer_op("BRANCH_IFNEQ_RDR", get_seq_index(s= )); + trace_pnv_spi_sequencer_op("BRANCH_IFNEQ_RDR", seq_index); /* * The memory mapping register RDR match value is compared aga= inst * the 16 rightmost bytes of the RDR (potentially with masking= ). @@ -864,6 +861,7 @@ static void operation_sequencer(PnvSpi *s) if (rdr_matched) { trace_pnv_spi_RDR_match("success"); /* A match occurred, increment the sequencer index. */ + seq_index++; next_sequencer_fsm(s); } else { trace_pnv_spi_RDR_match("failed"); @@ -871,8 +869,7 @@ static void operation_sequencer(PnvSpi *s) * Branch the sequencer to the index coded into the op * code. */ - s->status =3D SETFIELD(SPI_STS_SEQ_INDEX, s->status, - PNV_SPI_OPCODE_LO_NIBBLE(opcode)); + seq_index =3D PNV_SPI_OPCODE_LO_NIBBLE(opcode); } /* * Regardless of where the branch ended up we want the @@ -891,12 +888,13 @@ static void operation_sequencer(PnvSpi *s) case SEQ_OP_TRANSFER_TDR: s->status =3D SETFIELD(SPI_STS_SEQ_FSM, s->status, SEQ_STATE_E= XECUTE); qemu_log_mask(LOG_GUEST_ERROR, "Transfer TDR is not supported\= n"); + seq_index++; next_sequencer_fsm(s); break; =20 case SEQ_OP_BRANCH_IFNEQ_INC_1: s->status =3D SETFIELD(SPI_STS_SEQ_FSM, s->status, SEQ_STATE_E= XECUTE); - trace_pnv_spi_sequencer_op("BRANCH_IFNEQ_INC_1", get_seq_index= (s)); + trace_pnv_spi_sequencer_op("BRANCH_IFNEQ_INC_1", seq_index); /* * The spec says the loop should execute count compare + 1 tim= es. * However we learned from engineering that we really only loop @@ -910,18 +908,18 @@ static void operation_sequencer(PnvSpi *s) * mask off all but the first three bits so we don't try to * access beyond the sequencer_operation_reg boundary. */ - s->status =3D SETFIELD(SPI_STS_SEQ_INDEX, s->status, - PNV_SPI_OPCODE_LO_NIBBLE(opcode)); + seq_index =3D PNV_SPI_OPCODE_LO_NIBBLE(opcode); s->loop_counter_1++; } else { /* Continue to next index if loop counter is reached */ + seq_index++; next_sequencer_fsm(s); } break; =20 case SEQ_OP_BRANCH_IFNEQ_INC_2: s->status =3D SETFIELD(SPI_STS_SEQ_FSM, s->status, SEQ_STATE_E= XECUTE); - trace_pnv_spi_sequencer_op("BRANCH_IFNEQ_INC_2", get_seq_index= (s)); + trace_pnv_spi_sequencer_op("BRANCH_IFNEQ_INC_2", seq_index); uint8_t condition2 =3D GETFIELD(SPI_CTR_CFG_CMP2, s->regs[SPI_CTR_CFG_REG]); /* @@ -936,11 +934,11 @@ static void operation_sequencer(PnvSpi *s) * mask off all but the first three bits so we don't try to * access beyond the sequencer_operation_reg boundary. */ - s->status =3D SETFIELD(SPI_STS_SEQ_INDEX, - s->status, PNV_SPI_OPCODE_LO_NIBBLE(opcode= )); + seq_index =3D PNV_SPI_OPCODE_LO_NIBBLE(opcode); s->loop_counter_2++; } else { /* Continue to next index if loop counter is reached */ + seq_index++; next_sequencer_fsm(s); } break; @@ -948,6 +946,7 @@ static void operation_sequencer(PnvSpi *s) default: s->status =3D SETFIELD(SPI_STS_SEQ_FSM, s->status, SEQ_STATE_E= XECUTE); /* Ignore unsupported operations. */ + seq_index++; next_sequencer_fsm(s); break; } /* end of switch */ @@ -956,10 +955,10 @@ static void operation_sequencer(PnvSpi *s) * we need to go ahead and end things as if there was a STOP at the * end. */ - if (get_seq_index(s) =3D=3D NUM_SEQ_OPS) { + if (seq_index =3D=3D NUM_SEQ_OPS) { /* All 8 opcodes completed, sequencer idling */ s->status =3D SETFIELD(SPI_STS_SHIFTER_FSM, s->status, FSM_IDL= E); - s->status =3D SETFIELD(SPI_STS_SEQ_INDEX, s->status, 0); + seq_index =3D 0; s->loop_counter_1 =3D 0; s->loop_counter_2 =3D 0; s->status =3D SETFIELD(SPI_STS_SEQ_FSM, s->status, SEQ_STATE_I= DLE); @@ -970,6 +969,8 @@ static void operation_sequencer(PnvSpi *s) break; } } /* end of while */ + /* Update sequencer index field in status.*/ + s->status =3D SETFIELD(SPI_STS_SEQ_INDEX, s->status, seq_index); return; } /* end of operation_sequencer() */ =20 --=20 2.39.5