From patchwork Thu Apr 30 02:34:35 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Amitay Isaacs X-Patchwork-Id: 1279877 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 49CKKm3WbLz9sSg for ; Thu, 30 Apr 2020 12:37:32 +1000 (AEST) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=ozlabs.org Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; secure) header.d=ozlabs.org header.i=@ozlabs.org header.a=rsa-sha256 header.s=201707 header.b=SXHyk/uT; dkim-atps=neutral Received: from bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 49CKKm2XRGzDr6Y for ; 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Thu, 30 Apr 2020 12:35:00 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ozlabs.org; s=201707; t=1588214101; bh=5vMwM3qDmvRc9wfPXR0DvhLc/qkFHyJgRwJBiT85xyY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=SXHyk/uTchSazVqTGNVQAoYbHGuGHCc2JVQ90qPR3LBnfQc5X6Yp7g+JQOAj/th8x bBISIC642oapR/Sf/62YSt3Oln5Iq2bGMy9+RTEojFHU2Zd8CkMHAPjSVF0oRKlPae uKeeJWt1qE6+kyGyfbiNW+m/O4Yt2Zx2sGV2UfT9gN16HDdXCdpGDQvJi9SAmvog2r 4hqtx0aHKIIJUVR/+c48uL9P+Gssyc66+BDpi3BofaGiLpnVWAIlgan509QGmifuwV FW6+5NxNC1SvQkaQlXBvj3aciaEAxrDrfu4bjXxrk86340nWo9E0YCZroalWUOZSoF uSCJmgJETdaPQ== From: Amitay Isaacs To: pdbg@lists.ozlabs.org Date: Thu, 30 Apr 2020 12:34:35 +1000 Message-Id: <20200430023440.225504-15-amitay@ozlabs.org> X-Mailer: git-send-email 2.25.4 In-Reply-To: <20200430023440.225504-1-amitay@ozlabs.org> References: <20200430023440.225504-1-amitay@ozlabs.org> MIME-Version: 1.0 Subject: [Pdbg] [PATCH v5 14/19] libpdbg: Implement all thread procedures using sbefifo X-BeenThere: pdbg@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "mailing list for https://github.com/open-power/pdbg development" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Amitay Isaacs Errors-To: pdbg-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "Pdbg" Signed-off-by: Amitay Isaacs Reviewed-by: Alistair Popple --- libpdbg/sbefifo.c | 51 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+) diff --git a/libpdbg/sbefifo.c b/libpdbg/sbefifo.c index eeb8d5c..935a891 100644 --- a/libpdbg/sbefifo.c +++ b/libpdbg/sbefifo.c @@ -271,6 +271,53 @@ static int sbefifo_pib_write(struct pib *pib, uint64_t addr, uint64_t val) return sbefifo_scom_put(sctx, addr, val); } +static int sbefifo_pib_thread_op(struct pib *pib, uint32_t oper) +{ + struct sbefifo *sbefifo = target_to_sbefifo(pib->target.parent); + struct sbefifo_context *sctx = sbefifo->get_sbefifo_context(sbefifo); + uint32_t core_id, thread_id; + uint8_t mode = 0; + + /* + * core_id = 0xff (all SMT4 cores) + * thread_id = 0xf (all 4 threads in the SMT4 core) + */ + core_id = 0xff; + thread_id = 0xf; + + /* Enforce special-wakeup for thread stop and sreset */ + if ((oper & 0xf) == SBEFIFO_INSN_OP_STOP || + (oper & 0xf) == SBEFIFO_INSN_OP_SRESET) + mode = 0x2; + + return sbefifo_control_insn(sctx, core_id, thread_id, oper, mode); +} + +static int sbefifo_pib_thread_start(struct pib *pib) +{ + return sbefifo_pib_thread_op(pib, SBEFIFO_INSN_OP_START); +} + +static int sbefifo_pib_thread_stop(struct pib *pib) +{ + return sbefifo_pib_thread_op(pib, SBEFIFO_INSN_OP_STOP); +} + +static int sbefifo_pib_thread_step(struct pib *pib, int count) +{ + int i, rc = 0; + + for (i = 0; i < count; i++) + rc |= sbefifo_pib_thread_op(pib, SBEFIFO_INSN_OP_STEP); + + return rc; +} + +static int sbefifo_pib_thread_sreset(struct pib *pib) +{ + return sbefifo_pib_thread_op(pib, SBEFIFO_INSN_OP_SRESET); +} + static int sbefifo_thread_probe(struct pdbg_target *target) { struct thread *thread = target_to_thread(target); @@ -409,6 +456,10 @@ static struct pib sbefifo_pib = { }, .read = sbefifo_pib_read, .write = sbefifo_pib_write, + .thread_start_all = sbefifo_pib_thread_start, + .thread_stop_all = sbefifo_pib_thread_stop, + .thread_step_all = sbefifo_pib_thread_step, + .thread_sreset_all = sbefifo_pib_thread_sreset, .fd = -1, }; DECLARE_HW_UNIT(sbefifo_pib);