From patchwork Sat Oct 28 23:56:25 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: BALATON Zoltan X-Patchwork-Id: 13439635 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id D346DC4167D for ; Sat, 28 Oct 2023 23:57:11 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qwtAK-0007cn-NB; Sat, 28 Oct 2023 19:56:28 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qwtAJ-0007bq-As for qemu-devel@nongnu.org; Sat, 28 Oct 2023 19:56:27 -0400 Received: from zero.eik.bme.hu ([2001:738:2001:2001::2001]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qwtAH-0006Jj-JM for qemu-devel@nongnu.org; Sat, 28 Oct 2023 19:56:27 -0400 Received: from zero.eik.bme.hu (blah.eik.bme.hu [152.66.115.182]) by localhost (Postfix) with SMTP id 4E9E07560AC; Sun, 29 Oct 2023 01:56:25 +0200 (CEST) Received: by zero.eik.bme.hu (Postfix, from userid 432) id 27614756082; Sun, 29 Oct 2023 01:56:25 +0200 (CEST) Message-Id: <8a72238b3c78578011c5274c2ecbe4883bb73555.1698536342.git.balaton@eik.bme.hu> In-Reply-To: References: From: BALATON Zoltan Subject: [PATCH 3/4] hw/isa/vt82c686: Route PIRQ inputs using via_isa_set_irq() To: qemu-devel@nongnu.org Cc: philmd@linaro.org, Jiaxun Yang , Bernhard Beschow , vr_qemu@t-online.de Date: Sun, 29 Oct 2023 01:56:25 +0200 (CEST) Received-SPF: pass client-ip=2001:738:2001:2001::2001; envelope-from=balaton@eik.bme.hu; helo=zero.eik.bme.hu 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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org The chip has 4 pins (called PIRQA-D in VT82C686B and PINTA-D in VT8231) that are meant to be connected to PCI IRQ lines and allow routing PCI interrupts to the ISA PIC. Route these in via_isa_set_irq() to make it possible to share them with internal functions that can also be routed to the same ISA IRQs. Fixes: 2fdadd02e675caca4aba4ae26317701fe2c4c901 Signed-off-by: BALATON Zoltan --- hw/isa/vt82c686.c | 65 +++++++++++++++++------------------------------ 1 file changed, 24 insertions(+), 41 deletions(-) diff --git a/hw/isa/vt82c686.c b/hw/isa/vt82c686.c index 07ae8d73bc..18cc2f653d 100644 --- a/hw/isa/vt82c686.c +++ b/hw/isa/vt82c686.c @@ -593,6 +593,21 @@ static const TypeInfo via_isa_info = { }, }; +static int via_isa_get_pci_irq(const ViaISAState *s, int pin) +{ + switch (pin) { + case 0: + return s->dev.config[0x55] >> 4; + case 1: + return s->dev.config[0x56] & 0xf; + case 2: + return s->dev.config[0x56] >> 4; + case 3: + return s->dev.config[0x57] >> 4; + } + return 0; +} + void via_isa_set_irq(PCIDevice *d, int pin, int level) { ViaISAState *s = VIA_ISA(pci_get_function_0(d)); @@ -600,6 +615,10 @@ void via_isa_set_irq(PCIDevice *d, int pin, int level) uint8_t isa_irq = d->config[PCI_INTERRUPT_LINE], max_irq = 15; switch (n) { + case 0: /* PIRQ/PINT inputs */ + isa_irq = via_isa_get_pci_irq(s, pin); + n = 12 + pin; + break; case 2: /* USB ports 0-1 */ case 3: /* USB ports 2-3 */ max_irq = 14; @@ -623,50 +642,15 @@ void via_isa_set_irq(PCIDevice *d, int pin, int level) qemu_set_irq(s->isa_irqs_in[isa_irq], !!s->isa_irq_state[isa_irq]); } -static void via_isa_request_i8259_irq(void *opaque, int irq, int level) -{ - ViaISAState *s = opaque; - qemu_set_irq(s->cpu_intr, level); -} - -static int via_isa_get_pci_irq(const ViaISAState *s, int irq_num) +static void via_isa_pirq(void *opaque, int pin, int level) { - switch (irq_num) { - case 0: - return s->dev.config[0x55] >> 4; - case 1: - return s->dev.config[0x56] & 0xf; - case 2: - return s->dev.config[0x56] >> 4; - case 3: - return s->dev.config[0x57] >> 4; - } - return 0; + via_isa_set_irq(opaque, pin, level); } -static void via_isa_set_pci_irq(void *opaque, int irq_num, int level) +static void via_isa_request_i8259_irq(void *opaque, int irq, int level) { ViaISAState *s = opaque; - PCIBus *bus = pci_get_bus(&s->dev); - int i, pic_level, pic_irq = via_isa_get_pci_irq(s, irq_num); - - /* IRQ 0: disabled, IRQ 2,8,13: reserved */ - if (!pic_irq) { - return; - } - if (unlikely(pic_irq == 2 || pic_irq == 8 || pic_irq == 13)) { - qemu_log_mask(LOG_GUEST_ERROR, "Invalid ISA IRQ routing"); - } - - /* The pic level is the logical OR of all the PCI irqs mapped to it. */ - pic_level = 0; - for (i = 0; i < PCI_NUM_PINS; i++) { - if (pic_irq == via_isa_get_pci_irq(s, i)) { - pic_level |= pci_bus_get_irq_level(bus, i); - } - } - /* Now we change the pic irq level according to the via irq mappings. */ - qemu_set_irq(s->isa_irqs_in[pic_irq], pic_level); + qemu_set_irq(s->cpu_intr, level); } static void via_isa_realize(PCIDevice *d, Error **errp) @@ -679,6 +663,7 @@ static void via_isa_realize(PCIDevice *d, Error **errp) int i; qdev_init_gpio_out(dev, &s->cpu_intr, 1); + qdev_init_gpio_in_named(dev, via_isa_pirq, "pirq", PCI_NUM_PINS); isa_irq = qemu_allocate_irqs(via_isa_request_i8259_irq, s, 1); isa_bus = isa_bus_new(dev, pci_address_space(d), pci_address_space_io(d), errp); @@ -692,8 +677,6 @@ static void via_isa_realize(PCIDevice *d, Error **errp) i8254_pit_init(isa_bus, 0x40, 0, NULL); i8257_dma_init(isa_bus, 0); - qdev_init_gpio_in_named(dev, via_isa_set_pci_irq, "pirq", PCI_NUM_PINS); - /* RTC */ qdev_prop_set_int32(DEVICE(&s->rtc), "base_year", 2000); if (!qdev_realize(DEVICE(&s->rtc), BUS(isa_bus), errp)) {