From patchwork Fri Sep 24 07:37:55 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1532066 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) 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 ozlabs.org (Postfix) with ESMTPS id 4HG3rb0v8gz9sXk for ; Fri, 24 Sep 2021 17:41:51 +1000 (AEST) Received: from localhost ([::1]:38420 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mTfq8-0006ia-TP for incoming@patchwork.ozlabs.org; Fri, 24 Sep 2021 03:41:48 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:46922) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mTfnG-0001yS-UU for qemu-devel@nongnu.org; Fri, 24 Sep 2021 03:38:51 -0400 Received: from mail.ilande.co.uk ([2001:41c9:1:41f::167]:50232 helo=mail.default.ilande.bv.iomart.io) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mTfnD-000403-4E for qemu-devel@nongnu.org; Fri, 24 Sep 2021 03:38:50 -0400 Received: from [2a00:23c4:8b9d:4100:5d98:71b5:90ca:dad1] (helo=kentang.home) by mail.default.ilande.bv.iomart.io with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1mTfn2-0002uw-9A; Fri, 24 Sep 2021 08:38:40 +0100 From: Mark Cave-Ayland To: qemu-devel@nongnu.org, laurent@vivier.eu Date: Fri, 24 Sep 2021 08:37:55 +0100 Message-Id: <20210924073808.1041-8-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210924073808.1041-1-mark.cave-ayland@ilande.co.uk> References: <20210924073808.1041-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a00:23c4:8b9d:4100:5d98:71b5:90ca:dad1 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH v6 07/20] nubus: add trace-events for empty slot accesses X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.default.ilande.bv.iomart.io) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.default.ilande.bv.iomart.io X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, 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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Increase the max_access_size to 4 bytes for empty Nubus slot and super slot accesses to allow tracing of the Nubus enumeration process by the guest OS. Signed-off-by: Mark Cave-Ayland Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Laurent Vivier --- hw/nubus/nubus-bus.c | 10 +++++++--- hw/nubus/trace-events | 7 +++++++ hw/nubus/trace.h | 1 + meson.build | 1 + 4 files changed, 16 insertions(+), 3 deletions(-) create mode 100644 hw/nubus/trace-events create mode 100644 hw/nubus/trace.h diff --git a/hw/nubus/nubus-bus.c b/hw/nubus/nubus-bus.c index 04f11edd24..a9fb6ded9e 100644 --- a/hw/nubus/nubus-bus.c +++ b/hw/nubus/nubus-bus.c @@ -19,6 +19,7 @@ #include "qemu/osdep.h" #include "hw/nubus/nubus.h" #include "qapi/error.h" +#include "trace.h" static NubusBus *nubus_find(void) @@ -31,12 +32,13 @@ static void nubus_slot_write(void *opaque, hwaddr addr, uint64_t val, unsigned int size) { /* read only */ + trace_nubus_slot_write(addr, val, size); } - static uint64_t nubus_slot_read(void *opaque, hwaddr addr, unsigned int size) { + trace_nubus_slot_read(addr, size); return 0; } @@ -46,7 +48,7 @@ static const MemoryRegionOps nubus_slot_ops = { .endianness = DEVICE_BIG_ENDIAN, .valid = { .min_access_size = 1, - .max_access_size = 1, + .max_access_size = 4, }, }; @@ -54,11 +56,13 @@ static void nubus_super_slot_write(void *opaque, hwaddr addr, uint64_t val, unsigned int size) { /* read only */ + trace_nubus_super_slot_write(addr, val, size); } static uint64_t nubus_super_slot_read(void *opaque, hwaddr addr, unsigned int size) { + trace_nubus_super_slot_read(addr, size); return 0; } @@ -68,7 +72,7 @@ static const MemoryRegionOps nubus_super_slot_ops = { .endianness = DEVICE_BIG_ENDIAN, .valid = { .min_access_size = 1, - .max_access_size = 1, + .max_access_size = 4, }, }; diff --git a/hw/nubus/trace-events b/hw/nubus/trace-events new file mode 100644 index 0000000000..e31833d694 --- /dev/null +++ b/hw/nubus/trace-events @@ -0,0 +1,7 @@ +# See docs/devel/tracing.txt for syntax documentation. + +# nubus-bus.c +nubus_slot_read(uint64_t addr, int size) "reading unassigned addr 0x%"PRIx64 " size %d" +nubus_slot_write(uint64_t addr, uint64_t val, int size) "writing unassigned addr 0x%"PRIx64 " value 0x%"PRIx64 " size %d" +nubus_super_slot_read(uint64_t addr, int size) "reading unassigned addr 0x%"PRIx64 " size %d" +nubus_super_slot_write(uint64_t addr, uint64_t val, int size) "writing unassigned addr 0x%"PRIx64 " value 0x%"PRIx64 " size %d" diff --git a/hw/nubus/trace.h b/hw/nubus/trace.h new file mode 100644 index 0000000000..3749420da1 --- /dev/null +++ b/hw/nubus/trace.h @@ -0,0 +1 @@ +#include "trace/trace-hw_nubus.h" diff --git a/meson.build b/meson.build index 15ef4d3c41..7bdbbbdf02 100644 --- a/meson.build +++ b/meson.build @@ -2142,6 +2142,7 @@ if have_system 'hw/misc/macio', 'hw/net', 'hw/net/can', + 'hw/nubus', 'hw/nvme', 'hw/nvram', 'hw/pci',