From patchwork Sat Dec 16 21:29:56 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Herv=C3=A9_Poussineau?= X-Patchwork-Id: 849569 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=reactos.org header.i=@reactos.org header.b="a6twYdEU"; dkim-atps=neutral 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 3yzgkf2SJFz9t1t for ; Sun, 17 Dec 2017 08:42:34 +1100 (AEDT) Received: from localhost ([::1]:52263 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eQKE4-0006pD-GQ for incoming@patchwork.ozlabs.org; Sat, 16 Dec 2017 16:42:32 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:44009) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eQK8G-0002Iv-5M for qemu-devel@nongnu.org; Sat, 16 Dec 2017 16:36:33 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eQK8E-0006NW-Vr for qemu-devel@nongnu.org; Sat, 16 Dec 2017 16:36:32 -0500 Received: from iserv.reactos.org ([2a01:4f8:221:4c5::3]:40114) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1eQK8B-0006Gr-3U for qemu-devel@nongnu.org; Sat, 16 Dec 2017 16:36:30 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=reactos.org; s=25047; h=Content-Transfer-Encoding:Content-Type:MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From; bh=uYz2YnN1dKVPxqKXTqXRWC4LwUyuMSoxVS4wDa9JwwE=; b=a6twYdEUnoByJRtJIu6oppq1zvm9URu+3CPx7yeEWsHH49v00fHSEQSpUk3OWrVKZzZcy0mmrBkzeITFy1UmnKxoNgbo7Vffalsq2eQ549HZ53uGFBlbUoCyiz+AbdNZWcN/WjRvmOVuKGaJzaUZWikAIy1lMjacXYA7xo1YtBs=; Received: from [2a01:e34:ee6b:9c80:6267:20ff:fe65:a488] (helo=localhost.localdomain) by iserv.reactos.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.84_2) (envelope-from ) id 1eQK74-0002si-Ol; Sat, 16 Dec 2017 21:35:19 +0000 From: =?utf-8?q?Herv=C3=A9_Poussineau?= To: Aurelien Jarno , Yongbok Kim , "Michael S . Tsirkin" , Paolo Bonzini , qemu-devel@nongnu.org Date: Sat, 16 Dec 2017 22:29:56 +0100 Message-Id: <20171216213004.30393-8-hpoussin@reactos.org> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20171216213004.30393-1-hpoussin@reactos.org> References: <20171216213004.30393-1-hpoussin@reactos.org> MIME-Version: 1.0 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2a01:4f8:221:4c5::3 Subject: [Qemu-devel] [PATCH v2 07/15] piix4: add a i8259 interrupt controller as specified in datasheet 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: =?utf-8?q?Herv=C3=A9_Poussineau?= Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Add ISA irqs as piix4 gpio in, and CPU interrupt request as piix4 gpio out. Remove i8259 instanciated in malta board, to not have it twice. We can also remove the now unused piix4_init() function. Signed-off-by: Hervé Poussineau --- hw/isa/piix4.c | 40 +++++++++++++++++++++++++++++----------- hw/mips/mips_malta.c | 28 ++++++++++++---------------- include/hw/i386/pc.h | 1 - 3 files changed, 41 insertions(+), 28 deletions(-) diff --git a/hw/isa/piix4.c b/hw/isa/piix4.c index 7c83e7c23d..eb2f730fff 100644 --- a/hw/isa/piix4.c +++ b/hw/isa/piix4.c @@ -34,6 +34,8 @@ PCIDevice *piix4_dev; typedef struct PIIX4State { PCIDevice dev; + qemu_irq cpu_intr; + qemu_irq *isa; /* Reset Control Register */ MemoryRegion rcr_mem; @@ -92,6 +94,18 @@ static const VMStateDescription vmstate_piix4 = { } }; +static void piix4_request_i8259_irq(void *opaque, int irq, int level) +{ + PIIX4State *s = opaque; + qemu_set_irq(s->cpu_intr, level); +} + +static void piix4_set_i8259_irq(void *opaque, int irq, int level) +{ + PIIX4State *s = opaque; + qemu_set_irq(s->isa[irq], level); +} + static void piix4_rcr_write(void *opaque, hwaddr addr, uint64_t val, unsigned int len) { @@ -120,28 +134,32 @@ static void piix4_realize(PCIDevice *pci, Error **errp) { DeviceState *dev = DEVICE(pci); PIIX4State *s = DO_UPCAST(PIIX4State, dev, pci); + ISABus *isa_bus; + qemu_irq *i8259_out_irq; - if (!isa_bus_new(dev, pci_address_space(pci), - pci_address_space_io(pci), errp)) { + isa_bus = isa_bus_new(dev, pci_address_space(pci), + pci_address_space_io(pci), errp); + if (!isa_bus) { return; } + qdev_init_gpio_in_named(dev, piix4_set_i8259_irq, "isa", ISA_NUM_IRQS); + qdev_init_gpio_out_named(dev, &s->cpu_intr, "intr", 1); + memory_region_init_io(&s->rcr_mem, OBJECT(dev), &piix4_rcr_ops, s, "reset-control", 1); memory_region_add_subregion_overlap(pci_address_space_io(pci), 0xcf9, &s->rcr_mem, 1); - piix4_dev = pci; - qemu_register_reset(piix4_reset, s); -} + /* initialize i8259 pic */ + i8259_out_irq = qemu_allocate_irqs(piix4_request_i8259_irq, s, 1); + s->isa = i8259_init(isa_bus, *i8259_out_irq); -int piix4_init(PCIBus *bus, ISABus **isa_bus, int devfn) -{ - PCIDevice *d; + /* initialize ISA irqs */ + isa_bus_irqs(isa_bus, s->isa); - d = pci_create_simple_multifunction(bus, devfn, true, "PIIX4"); - *isa_bus = ISA_BUS(qdev_get_child_bus(DEVICE(d), "isa.0")); - return d->devfn; + piix4_dev = pci; + qemu_register_reset(piix4_reset, s); } static void piix4_class_init(ObjectClass *klass, void *data) diff --git a/hw/mips/mips_malta.c b/hw/mips/mips_malta.c index ec6af4a277..a1397c3304 100644 --- a/hw/mips/mips_malta.c +++ b/hw/mips/mips_malta.c @@ -96,7 +96,7 @@ typedef struct { SysBusDevice parent_obj; MIPSCPSState *cps; - qemu_irq *i8259; + qemu_irq i8259[16]; } MaltaState; static ISADevice *pit; @@ -998,8 +998,8 @@ void mips_malta_init(MachineState *machine) int64_t kernel_entry, bootloader_run_addr; PCIBus *pci_bus; ISABus *isa_bus; - qemu_irq *isa_irq; qemu_irq cbus_irq, i8259_irq; + PCIDevice *pci; int piix4_devfn; I2CBus *smbus; int i; @@ -1180,28 +1180,24 @@ void mips_malta_init(MachineState *machine) /* Board ID = 0x420 (Malta Board with CoreLV) */ stl_p(memory_region_get_ram_ptr(bios_copy) + 0x10, 0x00000420); - /* - * We have a circular dependency problem: pci_bus depends on isa_irq, - * isa_irq is provided by i8259, i8259 depends on ISA, ISA depends - * on piix4, and piix4 depends on pci_bus. To stop the cycle we have - * qemu_irq_proxy() adds an extra bit of indirection, allowing us - * to resolve the isa_irq -> i8259 dependency after i8259 is initialized. - */ - isa_irq = qemu_irq_proxy(&s->i8259, 16); - /* Northbridge */ - pci_bus = gt64120_register(isa_irq); + pci_bus = gt64120_register(s->i8259); /* Southbridge */ ide_drive_get(hd, ARRAY_SIZE(hd)); - piix4_devfn = piix4_init(pci_bus, &isa_bus, 80); + pci = pci_create_simple_multifunction(pci_bus, PCI_DEVFN(10, 0), + true, "PIIX4"); + dev = DEVICE(pci); + isa_bus = ISA_BUS(qdev_get_child_bus(dev, "isa.0")); + piix4_devfn = pci->devfn; /* Interrupt controller */ - /* The 8259 is attached to the MIPS CPU INT0 pin, ie interrupt 2 */ - s->i8259 = i8259_init(isa_bus, i8259_irq); + qdev_connect_gpio_out_named(dev, "intr", 0, i8259_irq); + for (i = 0; i < 16; i++) { + s->i8259[i] = qdev_get_gpio_in_named(dev, "isa", i); + } - isa_bus_irqs(isa_bus, s->i8259); pci_piix4_ide_init(pci_bus, hd, piix4_devfn + 1); pci_create_simple(pci_bus, piix4_devfn + 2, "piix4-usb-uhci"); smbus = piix4_pm_init(pci_bus, piix4_devfn + 3, 0x1100, diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h index ef438bd765..9e449a08cb 100644 --- a/include/hw/i386/pc.h +++ b/include/hw/i386/pc.h @@ -313,7 +313,6 @@ PCIBus *i440fx_init(const char *host_type, const char *pci_type, PCIBus *find_i440fx(void); /* piix4.c */ extern PCIDevice *piix4_dev; -int piix4_init(PCIBus *bus, ISABus **isa_bus, int devfn); /* vga.c */ enum vga_retrace_method {