From patchwork Tue May 17 11:30:13 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiaojuan Yang X-Patchwork-Id: 12852477 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 710BDC433EF for ; Tue, 17 May 2022 13:14:09 +0000 (UTC) Received: from localhost ([::1]:41022 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nqx1c-00045B-Fq for qemu-devel@archiver.kernel.org; Tue, 17 May 2022 09:14:08 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:42732) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nqvXR-0001Sj-U9 for qemu-devel@nongnu.org; Tue, 17 May 2022 07:38:57 -0400 Received: from mail.loongson.cn ([114.242.206.163]:54350 helo=loongson.cn) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nqvXP-00032M-5A for qemu-devel@nongnu.org; Tue, 17 May 2022 07:38:53 -0400 Received: from localhost.localdomain (unknown [10.2.5.185]) by mail.loongson.cn (Coremail) with SMTP id AQAAf9BxcNpPh4Ni4sEZAA--.25635S35; Tue, 17 May 2022 19:31:03 +0800 (CST) From: Xiaojuan Yang To: qemu-devel@nongnu.org Cc: richard.henderson@linaro.org, gaosong@loongson.cn, mark.cave-ayland@ilande.co.uk, mst@redhat.com, imammedo@redhat.com, ani@anisinha.ca Subject: [PATCH v4 33/43] hw/intc: Add LoongArch ls7a msi interrupt controller support(PCH-MSI) Date: Tue, 17 May 2022 19:30:13 +0800 Message-Id: <20220517113023.3051143-34-yangxiaojuan@loongson.cn> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20220517113023.3051143-1-yangxiaojuan@loongson.cn> References: <20220517113023.3051143-1-yangxiaojuan@loongson.cn> MIME-Version: 1.0 X-CM-TRANSID: AQAAf9BxcNpPh4Ni4sEZAA--.25635S35 X-Coremail-Antispam: 1UD129KBjvJXoW3GrW8Cr18JrWDZr4kJr1UWrg_yoW7try3pr sru34agr4kta17WFZ3J34rAF95JFs7ury2vF4a9ryxCr4DAas5XF1ktry7WFyUK3ykGryj va95Ca12qa1UGaUanT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnUUvcSsGvfC2KfnxnUUI43ZEXa7xR_UUUUUUUUU== X-CM-SenderInfo: p1dqw5xldry3tdq6z05rqj20fqof0/ Received-SPF: pass client-ip=114.242.206.163; envelope-from=yangxiaojuan@loongson.cn; helo=loongson.cn 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_PASS=-0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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" This patch realize PCH-MSI interrupt controller. Signed-off-by: Xiaojuan Yang Signed-off-by: Song Gao Reviewed-by: Richard Henderson --- hw/intc/Kconfig | 5 ++ hw/intc/loongarch_pch_msi.c | 73 +++++++++++++++++++++++++++++ hw/intc/meson.build | 1 + hw/intc/trace-events | 3 ++ hw/loongarch/Kconfig | 1 + include/hw/intc/loongarch_pch_msi.h | 20 ++++++++ 6 files changed, 103 insertions(+) create mode 100644 hw/intc/loongarch_pch_msi.c create mode 100644 include/hw/intc/loongarch_pch_msi.h diff --git a/hw/intc/Kconfig b/hw/intc/Kconfig index 362980ca8c..58f550b865 100644 --- a/hw/intc/Kconfig +++ b/hw/intc/Kconfig @@ -94,3 +94,8 @@ config LOONGARCH_IPI config LOONGARCH_PCH_PIC bool select UNIMP + +config LOONGARCH_PCH_MSI + select MSI_NONBROKEN + bool + select UNIMP diff --git a/hw/intc/loongarch_pch_msi.c b/hw/intc/loongarch_pch_msi.c new file mode 100644 index 0000000000..74bcdbdb48 --- /dev/null +++ b/hw/intc/loongarch_pch_msi.c @@ -0,0 +1,73 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * QEMU Loongson 7A1000 msi interrupt controller. + * + * Copyright (C) 2021 Loongson Technology Corporation Limited + */ + +#include "qemu/osdep.h" +#include "hw/sysbus.h" +#include "hw/irq.h" +#include "hw/intc/loongarch_pch_msi.h" +#include "hw/intc/loongarch_pch_pic.h" +#include "hw/pci/msi.h" +#include "hw/misc/unimp.h" +#include "migration/vmstate.h" +#include "trace.h" + +static uint64_t loongarch_msi_mem_read(void *opaque, hwaddr addr, unsigned size) +{ + return 0; +} + +static void loongarch_msi_mem_write(void *opaque, hwaddr addr, + uint64_t val, unsigned size) +{ + LoongArchPCHMSI *s = LOONGARCH_PCH_MSI(opaque); + int irq_num = val & 0xff; + + trace_loongarch_msi_set_irq(irq_num); + assert(irq_num < PCH_MSI_IRQ_NUM); + qemu_set_irq(s->pch_msi_irq[irq_num], 1); +} + +static const MemoryRegionOps loongarch_pch_msi_ops = { + .read = loongarch_msi_mem_read, + .write = loongarch_msi_mem_write, + .endianness = DEVICE_LITTLE_ENDIAN, +}; + +static void pch_msi_irq_handler(void *opaque, int irq, int level) +{ + LoongArchPCHMSI *s = LOONGARCH_PCH_MSI(opaque); + + qemu_set_irq(s->pch_msi_irq[irq], level); +} + +static void loongarch_pch_msi_init(Object *obj) +{ + LoongArchPCHMSI *s = LOONGARCH_PCH_MSI(obj); + SysBusDevice *sbd = SYS_BUS_DEVICE(obj); + + memory_region_init_io(&s->msi_mmio, obj, &loongarch_pch_msi_ops, + s, TYPE_LOONGARCH_PCH_MSI, 0x8); + sysbus_init_mmio(sbd, &s->msi_mmio); + msi_nonbroken = true; + + qdev_init_gpio_out(DEVICE(obj), s->pch_msi_irq, PCH_MSI_IRQ_NUM); + qdev_init_gpio_in(DEVICE(obj), pch_msi_irq_handler, PCH_MSI_IRQ_NUM); +} + +static const TypeInfo loongarch_pch_msi_info = { + .name = TYPE_LOONGARCH_PCH_MSI, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(LoongArchPCHMSI), + .instance_init = loongarch_pch_msi_init, +}; + +static void loongarch_pch_msi_register_types(void) +{ + type_register_static(&loongarch_pch_msi_info); +} + +type_init(loongarch_pch_msi_register_types) diff --git a/hw/intc/meson.build b/hw/intc/meson.build index 03f13f1c49..1d407c046d 100644 --- a/hw/intc/meson.build +++ b/hw/intc/meson.build @@ -65,3 +65,4 @@ specific_ss.add(when: 'CONFIG_M68K_IRQC', if_true: files('m68k_irqc.c')) specific_ss.add(when: 'CONFIG_NIOS2_VIC', if_true: files('nios2_vic.c')) specific_ss.add(when: 'CONFIG_LOONGARCH_IPI', if_true: files('loongarch_ipi.c')) specific_ss.add(when: 'CONFIG_LOONGARCH_PCH_PIC', if_true: files('loongarch_pch_pic.c')) +specific_ss.add(when: 'CONFIG_LOONGARCH_PCH_MSI', if_true: files('loongarch_pch_msi.c')) diff --git a/hw/intc/trace-events b/hw/intc/trace-events index 1f343676ee..8bcc1b6992 100644 --- a/hw/intc/trace-events +++ b/hw/intc/trace-events @@ -300,3 +300,6 @@ loongarch_pch_pic_high_readw(unsigned size, uint32_t addr, unsigned long val) "s loongarch_pch_pic_high_writew(unsigned size, uint32_t addr, unsigned long val) "size: %u addr: 0x%"PRIx32 "val: 0x%" PRIx64 loongarch_pch_pic_readb(unsigned size, uint32_t addr, unsigned long val) "size: %u addr: 0x%"PRIx32 "val: 0x%" PRIx64 loongarch_pch_pic_writeb(unsigned size, uint32_t addr, unsigned long val) "size: %u addr: 0x%"PRIx32 "val: 0x%" PRIx64 + +# loongarch_pch_msi.c +loongarch_msi_set_irq(int irq_num) "set msi irq %d" diff --git a/hw/loongarch/Kconfig b/hw/loongarch/Kconfig index 2df45f7e8f..d814fc6103 100644 --- a/hw/loongarch/Kconfig +++ b/hw/loongarch/Kconfig @@ -4,3 +4,4 @@ config LOONGARCH_VIRT select PCI_EXPRESS_GENERIC_BRIDGE select LOONGARCH_IPI select LOONGARCH_PCH_PIC + select LOONGARCH_PCH_MSI diff --git a/include/hw/intc/loongarch_pch_msi.h b/include/hw/intc/loongarch_pch_msi.h new file mode 100644 index 0000000000..f668bfca7a --- /dev/null +++ b/include/hw/intc/loongarch_pch_msi.h @@ -0,0 +1,20 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * LoongArch 7A1000 I/O interrupt controller definitions + * + * Copyright (C) 2021 Loongson Technology Corporation Limited + */ + +#define TYPE_LOONGARCH_PCH_MSI "loongarch_pch_msi" +OBJECT_DECLARE_SIMPLE_TYPE(LoongArchPCHMSI, LOONGARCH_PCH_MSI) + +/* Msi irq start start from 64 to 255 */ +#define PCH_MSI_IRQ_START 64 +#define PCH_MSI_IRQ_END 255 +#define PCH_MSI_IRQ_NUM 192 + +struct LoongArchPCHMSI { + SysBusDevice parent_obj; + qemu_irq pch_msi_irq[PCH_MSI_IRQ_NUM]; + MemoryRegion msi_mmio; +};