From nobody Mon Nov 22 15:30:29 2021 X-Original-To: dev-commits-src-main@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 175C0189029F; Mon, 22 Nov 2021 15:30:30 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4HyWS56wp3z4r5N; Mon, 22 Nov 2021 15:30:29 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id C41EC2522E; Mon, 22 Nov 2021 15:30:29 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.16.1/8.16.1) with ESMTP id 1AMFUTDE079828; Mon, 22 Nov 2021 15:30:29 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 1AMFUT27079827; Mon, 22 Nov 2021 15:30:29 GMT (envelope-from git) Date: Mon, 22 Nov 2021 15:30:29 GMT Message-Id: <202111221530.1AMFUT27079827@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: Emmanuel Vadot Subject: git: 5cf21e48ccf1 - main - bhyve: use a fixed 32 bit BAR base address List-Id: Commit messages for the main branch of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-main List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-dev-commits-src-main@freebsd.org X-BeenThere: dev-commits-src-main@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: manu X-Git-Repository: src X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: 5cf21e48ccf114928da9c6564c7e5dec7d6119c5 Auto-Submitted: auto-generated X-ThisMailContainsUnwantedMimeParts: N The branch main has been updated by manu: URL: https://cgit.FreeBSD.org/src/commit/?id=5cf21e48ccf114928da9c6564c7e5dec7d6119c5 commit 5cf21e48ccf114928da9c6564c7e5dec7d6119c5 Author: Corvin Köhne AuthorDate: 2021-11-22 15:24:47 +0000 Commit: Emmanuel Vadot CommitDate: 2021-11-22 15:24:47 +0000 bhyve: use a fixed 32 bit BAR base address OVMF always uses 0xC0000000 as base address for 32 bit PCI MMIO space. For that reason, we should use that address too. Reviewed by: markj Differential Revision: https://reviews.freebsd.org/D31051 Sponsored by: Beckhoff Automation GmbH & Co. KG --- usr.sbin/bhyve/pci_emul.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) diff --git a/usr.sbin/bhyve/pci_emul.c b/usr.sbin/bhyve/pci_emul.c index cbcd8154b2b1..3eec3eb6f5f9 100644 --- a/usr.sbin/bhyve/pci_emul.c +++ b/usr.sbin/bhyve/pci_emul.c @@ -43,6 +43,7 @@ __FBSDID("$FreeBSD$"); #include #include #include +#include #include #include @@ -110,6 +111,11 @@ static uint64_t pci_emul_memlim64; #define PCI_EMUL_ECFG_SIZE (MAXBUSES * 1024 * 1024) /* 1MB per bus */ SYSRES_MEM(PCI_EMUL_ECFG_BASE, PCI_EMUL_ECFG_SIZE); +/* + * OVMF always uses 0xC0000000 as base address for 32 bit PCI MMIO. Don't + * change this address without changing it in OVMF. + */ +#define PCI_EMUL_MEMBASE32 0xC0000000 #define PCI_EMUL_MEMLIMIT32 PCI_EMUL_ECFG_BASE #define PCI_EMUL_MEMSIZE64 (32*GB) @@ -1156,8 +1162,11 @@ init_pci(struct vmctx *ctx) int bus, slot, func; int error; + if (vm_get_lowmem_limit(ctx) > PCI_EMUL_MEMBASE32) + errx(EX_OSERR, "Invalid lowmem limit"); + pci_emul_iobase = PCI_EMUL_IOBASE; - pci_emul_membase32 = vm_get_lowmem_limit(ctx); + pci_emul_membase32 = PCI_EMUL_MEMBASE32; pci_emul_membase64 = 4*GB + vm_get_highmem_size(ctx); pci_emul_membase64 = roundup2(pci_emul_membase64, PCI_EMUL_MEMSIZE64); @@ -1262,8 +1271,8 @@ init_pci(struct vmctx *ctx) /* * The guest physical memory map looks like the following: * [0, lowmem) guest system memory - * [lowmem, lowmem_limit) memory hole (may be absent) - * [lowmem_limit, 0xE0000000) PCI hole (32-bit BAR allocation) + * [lowmem, 0xC0000000) memory hole (may be absent) + * [0xC0000000, 0xE0000000) PCI hole (32-bit BAR allocation) * [0xE0000000, 0xF0000000) PCI extended config window * [0xF0000000, 4GB) LAPIC, IOAPIC, HPET, firmware * [4GB, 4GB + highmem)