From patchwork Thu Oct 6 12:02:50 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: David Gibson X-Patchwork-Id: 678863 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3sqWlh4smtz9s5w for ; Thu, 6 Oct 2016 23:13:52 +1100 (AEDT) Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=gibson.dropbear.id.au header.i=@gibson.dropbear.id.au header.b=GkDENSFk; dkim-atps=neutral Received: from localhost ([::1]:55325 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bs7Yb-0005LU-BC for incoming@patchwork.ozlabs.org; Thu, 06 Oct 2016 08:13:49 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:45855) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bs7Ob-0004PG-Ts for qemu-devel@nongnu.org; Thu, 06 Oct 2016 08:03:32 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bs7OX-0007TF-0P for qemu-devel@nongnu.org; Thu, 06 Oct 2016 08:03:29 -0400 Received: from ozlabs.org ([103.22.144.67]:51667) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bs7OW-0007Sm-Ks; Thu, 06 Oct 2016 08:03:24 -0400 Received: by ozlabs.org (Postfix, from userid 1007) id 3sqWWb1TG2z9sR9; Thu, 6 Oct 2016 23:03:23 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gibson.dropbear.id.au; s=201602; t=1475755403; bh=YSbzSSCz+II+tN0YITq8RUj2h3BEA9r9hjKbasFofLo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GkDENSFkMOD4Kgg9/GPZxO06SBF89/uBlaM8EH0cHQkh2ZeK2tZgvWYtPHk7VsSFn 7rAfgBpyF98jAhUE9/HIIPHYPhShnH2rwLUqmjoXmdCwUrSRtTrR7SNFmuYQep0BC4 xO6z7NpipglUif38XhtIrKzD0QikCRQpnhq7v0bk= From: David Gibson To: peter.maydell@linaro.org Date: Thu, 6 Oct 2016 23:02:50 +1100 Message-Id: <1475755395-27307-5-git-send-email-david@gibson.dropbear.id.au> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1475755395-27307-1-git-send-email-david@gibson.dropbear.id.au> References: <1475755395-27307-1-git-send-email-david@gibson.dropbear.id.au> MIME-Version: 1.0 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 103.22.144.67 Subject: [Qemu-devel] [PULL 04/29] hw/ppc/spapr: Move code related to "ibm, pa-features" to a separate function X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Thomas Huth , David Gibson , qemu-ppc@nongnu.org, agraf@suse.de, qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: Thomas Huth The function spapr_populate_cpu_dt() has become quite big already, and since we likely have to extend the pa-features property for every new processor generation, it is nicer if we put the related code into a separate function. Signed-off-by: Thomas Huth Reviewed-by: Cédric Le Goater Signed-off-by: David Gibson --- hw/ppc/spapr.c | 66 ++++++++++++++++++++++++++++++++-------------------------- 1 file changed, 36 insertions(+), 30 deletions(-) diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c index 420ad1b..8048f92 100644 --- a/hw/ppc/spapr.c +++ b/hw/ppc/spapr.c @@ -546,6 +546,41 @@ static int spapr_populate_memory(sPAPRMachineState *spapr, void *fdt) return 0; } +/* Populate the "ibm,pa-features" property */ +static void spapr_populate_pa_features(CPUPPCState *env, void *fdt, int offset) +{ + uint8_t pa_features_206[] = { 6, 0, + 0xf6, 0x1f, 0xc7, 0x00, 0x80, 0xc0 }; + uint8_t pa_features_207[] = { 24, 0, + 0xf6, 0x1f, 0xc7, 0xc0, 0x80, 0xf0, + 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x80, 0x00, + 0x80, 0x00, 0x80, 0x00, 0x80, 0x00 }; + uint8_t *pa_features; + size_t pa_size; + + if (env->mmu_model == POWERPC_MMU_2_06) { + pa_features = pa_features_206; + pa_size = sizeof(pa_features_206); + } else { /* env->mmu_model == POWERPC_MMU_2_07 */ + pa_features = pa_features_207; + pa_size = sizeof(pa_features_207); + } + + if (env->ci_large_pages) { + /* + * Note: we keep CI large pages off by default because a 64K capable + * guest provisioned with large pages might otherwise try to map a qemu + * framebuffer (or other kind of memory mapped PCI BAR) using 64K pages + * even if that qemu runs on a 4k host. + * We dd this bit back here if we are confident this is not an issue + */ + pa_features[3] |= 0x20; + } + + _FDT((fdt_setprop(fdt, offset, "ibm,pa-features", pa_features, pa_size))); +} + static void spapr_populate_cpu_dt(CPUState *cs, void *fdt, int offset, sPAPRMachineState *spapr) { @@ -573,24 +608,6 @@ static void spapr_populate_cpu_dt(CPUState *cs, void *fdt, int offset, _FDT((fdt_setprop_cell(fdt, offset, "ibm,my-drc-index", drc_index))); } - /* Note: we keep CI large pages off for now because a 64K capable guest - * provisioned with large pages might otherwise try to map a qemu - * framebuffer (or other kind of memory mapped PCI BAR) using 64K pages - * even if that qemu runs on a 4k host. - * - * We can later add this bit back when we are confident this is not - * an issue (!HV KVM or 64K host) - */ - uint8_t pa_features_206[] = { 6, 0, - 0xf6, 0x1f, 0xc7, 0x00, 0x80, 0xc0 }; - uint8_t pa_features_207[] = { 24, 0, - 0xf6, 0x1f, 0xc7, 0xc0, 0x80, 0xf0, - 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x80, 0x00, - 0x80, 0x00, 0x80, 0x00, 0x80, 0x00 }; - uint8_t *pa_features; - size_t pa_size; - _FDT((fdt_setprop_cell(fdt, offset, "reg", index))); _FDT((fdt_setprop_string(fdt, offset, "device_type", "cpu"))); @@ -657,18 +674,7 @@ static void spapr_populate_cpu_dt(CPUState *cs, void *fdt, int offset, page_sizes_prop, page_sizes_prop_size))); } - /* Do the ibm,pa-features property, adjust it for ci-large-pages */ - if (env->mmu_model == POWERPC_MMU_2_06) { - pa_features = pa_features_206; - pa_size = sizeof(pa_features_206); - } else /* env->mmu_model == POWERPC_MMU_2_07 */ { - pa_features = pa_features_207; - pa_size = sizeof(pa_features_207); - } - if (env->ci_large_pages) { - pa_features[3] |= 0x20; - } - _FDT((fdt_setprop(fdt, offset, "ibm,pa-features", pa_features, pa_size))); + spapr_populate_pa_features(env, fdt, offset); _FDT((fdt_setprop_cell(fdt, offset, "ibm,chip-id", cs->cpu_index / vcpus_per_socket)));