From patchwork Wed May 5 19:21:30 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Volker_R=C3=BCmelin?= X-Patchwork-Id: 1474541 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.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 4Fb6NV2tchz9sPf for ; Thu, 6 May 2021 05:34:34 +1000 (AEST) Received: from localhost ([::1]:44156 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1leNI0-0002Xu-DM for incoming@patchwork.ozlabs.org; Wed, 05 May 2021 15:34:32 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:43776) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1leN7B-0002I6-1k for qemu-devel@nongnu.org; Wed, 05 May 2021 15:23:22 -0400 Received: from mailout12.t-online.de ([194.25.134.22]:40170) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1leN73-0007qM-EB for qemu-devel@nongnu.org; Wed, 05 May 2021 15:23:18 -0400 Received: from fwd15.aul.t-online.de (fwd15.aul.t-online.de [172.20.27.63]) by mailout12.t-online.de (Postfix) with SMTP id D3DA832721; Wed, 5 May 2021 21:21:56 +0200 (CEST) Received: from linpower.localnet (GQUIpsZerhYjvA2Iy2XvlWTawEwv4AkOT+F7xYYKg823SSHW5oDSERlfjAOWGrMQKs@[46.86.52.8]) by fwd15.t-online.de with (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384 encrypted) esmtp id 1leN5i-20sP2G0; Wed, 5 May 2021 21:21:50 +0200 Received: by linpower.localnet (Postfix, from userid 1000) id 0058A2006F7; Wed, 5 May 2021 21:21:33 +0200 (CEST) From: =?utf-8?q?Volker_R=C3=BCmelin?= To: "Michael S. Tsirkin" , Paolo Bonzini Subject: [PATCH 07/10] pckbd: add state variable for interrupt source Date: Wed, 5 May 2021 21:21:30 +0200 Message-Id: <20210505192133.7480-7-vr_qemu@t-online.de> X-Mailer: git-send-email 2.26.2 In-Reply-To: References: MIME-Version: 1.0 X-ID: GQUIpsZerhYjvA2Iy2XvlWTawEwv4AkOT+F7xYYKg823SSHW5oDSERlfjAOWGrMQKs X-TOI-EXPURGATEID: 150726::1620242510-0001577D-1CD62D14/0/0 CLEAN NORMAL X-TOI-MSGID: dba7b5fc-18bc-4ab0-b5b1-538407b61e52 Received-SPF: none client-ip=194.25.134.22; envelope-from=volker.ruemelin@t-online.de; helo=mailout12.t-online.de 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, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_NONE=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: , Cc: qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Currently there is only one flag to distinguish between two interrupt sources and there are no available flags for more sources. Add an internal state variable to store the interrupt source. The next patch will introduce an additional interrupt source. There is no functional change. Signed-off-by: Volker Rümelin --- hw/input/pckbd.c | 22 +++++++++++++++++----- 1 file changed, 17 insertions(+), 5 deletions(-) diff --git a/hw/input/pckbd.c b/hw/input/pckbd.c index f45aebb6b8..f8f3859b17 100644 --- a/hw/input/pckbd.c +++ b/hw/input/pckbd.c @@ -135,12 +135,16 @@ #define KBD_MIGR_TIMER_PENDING 0x1 +#define KBD_OBSRC_KBD 0x01 +#define KBD_OBSRC_MOUSE 0x02 + typedef struct KBDState { uint8_t write_cmd; /* if non zero, write data to port 60 is expected */ uint8_t status; uint8_t mode; uint8_t outport; uint32_t migration_flags; + uint32_t obsrc; bool outport_present; /* Bitmask of devices with data available. */ uint8_t pending; @@ -198,6 +202,9 @@ static void kbd_update_irq(KBDState *s) if (s->pending == KBD_PENDING_AUX) { s->status |= KBD_STAT_MOUSE_OBF; s->outport |= KBD_OUT_MOUSE_OBF; + s->obsrc = KBD_OBSRC_MOUSE; + } else { + s->obsrc = KBD_OBSRC_KBD; } } kbd_update_irq_lines(s); @@ -371,18 +378,17 @@ static uint64_t kbd_read_data(void *opaque, hwaddr addr, unsigned size) { KBDState *s = opaque; - uint8_t status = s->status; - if (status & KBD_STAT_OBF) { + if (s->status & KBD_STAT_OBF) { kbd_deassert_irq(s); - if (status & KBD_STAT_MOUSE_OBF) { - s->obdata = ps2_read_data(s->mouse); - } else { + if (s->obsrc & KBD_OBSRC_KBD) { if (s->throttle_timer) { timer_mod(s->throttle_timer, qemu_clock_get_us(QEMU_CLOCK_VIRTUAL) + 1000); } s->obdata = ps2_read_data(s->kbd); + } else if (s->obsrc & KBD_OBSRC_MOUSE) { + s->obdata = ps2_read_data(s->mouse); } } @@ -499,6 +505,11 @@ static int kbd_post_load(void *opaque, int version_id) s->outport = kbd_outport_default(s); } s->outport_present = false; + if (version_id < 4) { + s->obsrc = s->status & KBD_STAT_OBF ? + (s->status & KBD_STAT_MOUSE_OBF ? KBD_OBSRC_MOUSE : KBD_OBSRC_KBD) : + 0; + } if (s->migration_flags & KBD_MIGR_TIMER_PENDING) { kbd_throttle_timeout(s); } @@ -517,6 +528,7 @@ static const VMStateDescription vmstate_kbd = { VMSTATE_UINT8(mode, KBDState), VMSTATE_UINT8(pending, KBDState), VMSTATE_UINT32_V(migration_flags, KBDState, 4), + VMSTATE_UINT32_V(obsrc, KBDState, 4), VMSTATE_UINT8_V(obdata, KBDState, 4), VMSTATE_END_OF_LIST() },