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Fri, 28 Aug 2026 09:04:20 +0000 From: Jamin Lin To: Paolo Bonzini , Peter Maydell , =?iso-8859-1?Q?C=E9dric_Le_Goater?= , Steven Lee , Troy Lee , Kane Chen , Andrew Jeffery , Joel Stanley , "open list:ARM TCG CPUs" , "open list:All patches CC here" CC: Jamin Lin , Troy Lee Subject: [PATCH v2 4/4] hw/arm/aspeed_ast2600: Wire up the UDC Thread-Topic: [PATCH v2 4/4] hw/arm/aspeed_ast2600: Wire up the UDC Thread-Index: AQHdNsw1n7tMj9PI6UGWFcjm7LEdTA== Date: Fri, 28 Aug 2026 09:04:19 +0000 Message-ID: <20260828090412.981841-5-jamin_lin@aspeedtech.com> References: <20260828090412.981841-1-jamin_lin@aspeedtech.com> In-Reply-To: <20260828090412.981841-1-jamin_lin@aspeedtech.com> Accept-Language: zh-TW, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=aspeedtech.com; x-ms-publictraffictype: Email x-ms-traffictypediagnostic: TYZPR06MB4980:EE_|PS1PPF2A261C07C:EE_ x-ms-office365-filtering-correlation-id: 3d94d387-e28c-466b-0bcc-08df04e3590c x-ms-exchange-senderadcheck: 1 x-ms-exchange-antispam-relay: 0 x-microsoft-antispam: BCL:0; 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envelope-from=jamin_lin@aspeedtech.com; helo=TYDPR03CU002.outbound.protection.outlook.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-arm@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-arm-bounces+qemu-arm=archiver.kernel.org@nongnu.org Sender: qemu-arm-bounces+qemu-arm=archiver.kernel.org@nongnu.org Create the USB Device Controller (UDC) at 0x1e6a2000 on the AST2600 SoC=0A= and map its registers.=0A= =0A= The UDC and the second EHCI host controller (EHCI2) share one SoC=0A= interrupt line. Route both through an OR gate whose output drives that=0A= GIC input, so either device can raise the interrupt without the other=0A= clobbering the line.=0A= =0A= The gadget USB device is not created by the SoC. It is a separate,=0A= user-creatable "aspeed.udc-gadget" USB device that the user plugs onto a=0A= USB host controller's bus; it finds its controller through the "udc"=0A= link property, e.g.=0A= =0A= -device aspeed.udc-gadget,udc=3D/machine/soc/udc=0A= =0A= Signed-off-by: Jamin Lin =0A= ---=0A= include/hw/arm/aspeed_soc.h | 4 ++++=0A= hw/arm/aspeed_ast2600.c | 37 ++++++++++++++++++++++++++++++++++---=0A= 2 files changed, 38 insertions(+), 3 deletions(-)=0A= =0A= diff --git a/include/hw/arm/aspeed_soc.h b/include/hw/arm/aspeed_soc.h=0A= index cd68c7f1ca..fe7b31e42c 100644=0A= --- a/include/hw/arm/aspeed_soc.h=0A= +++ b/include/hw/arm/aspeed_soc.h=0A= @@ -36,6 +36,8 @@=0A= #include "hw/gpio/aspeed_sgpio.h"=0A= #include "hw/sd/aspeed_sdhci.h"=0A= #include "hw/usb/hcd-ehci.h"=0A= +#include "hw/usb/aspeed-udc.h"=0A= +#include "hw/core/or-irq.h"=0A= #include "qom/object.h"=0A= #include "hw/misc/aspeed_lpc.h"=0A= #include "hw/misc/unimp.h"=0A= @@ -138,6 +140,8 @@ struct Aspeed2600SoCState {=0A= =0A= A15MPPrivState a7mpcore;=0A= ARMCPU cpu[ASPEED_CPUS_NUM]; /* XXX belong to a7mpcore */=0A= + AspeedUDCState udc;=0A= + OrIRQState ehci2_udc_orgate;=0A= };=0A= =0A= #define TYPE_ASPEED2600_SOC "aspeed2600-soc"=0A= diff --git a/hw/arm/aspeed_ast2600.c b/hw/arm/aspeed_ast2600.c=0A= index d1f18e471a..21db95f5ae 100644=0A= --- a/hw/arm/aspeed_ast2600.c=0A= +++ b/hw/arm/aspeed_ast2600.c=0A= @@ -32,6 +32,7 @@ static const hwaddr aspeed_soc_ast2600_memmap[] =3D {=0A= [ASPEED_DEV_SPI1] =3D 0x1E630000,=0A= [ASPEED_DEV_SPI2] =3D 0x1E631000,=0A= [ASPEED_DEV_EHCI1] =3D 0x1E6A1000,=0A= + [ASPEED_DEV_UDC] =3D 0x1E6A2000,=0A= [ASPEED_DEV_EHCI2] =3D 0x1E6A3000,=0A= [ASPEED_DEV_MII1] =3D 0x1E650000,=0A= [ASPEED_DEV_MII2] =3D 0x1E650008,=0A= @@ -214,6 +215,10 @@ static void aspeed_soc_ast2600_init(Object *obj)=0A= TYPE_PLATFORM_EHCI);=0A= }=0A= =0A= + object_initialize_child(obj, "udc", &a->udc, TYPE_ASPEED_UDC);=0A= + object_initialize_child(obj, "ehci2-udc-orgate", &a->ehci2_udc_orgate,= =0A= + TYPE_OR_IRQ);=0A= +=0A= snprintf(typename, sizeof(typename), "aspeed.sdmc-%s", socname);=0A= object_initialize_child(obj, "sdmc", &s->sdmc, typename);=0A= object_property_add_alias(obj, "ram-size", OBJECT(&s->sdmc),=0A= @@ -561,6 +566,16 @@ static void aspeed_soc_ast2600_realize(DeviceState *de= v, Error **errp)=0A= aspeed_soc_ast2600_get_irq(s, ASPEED_DEV_SPI1 += i));=0A= }=0A= =0A= + /*=0A= + * EHCI2 and the UDC share one SoC interrupt line, so OR their outputs= =0A= + * together and drive that GIC input from the OR gate.=0A= + */=0A= + object_property_set_int(OBJECT(&a->ehci2_udc_orgate), "num-lines", 2,= =0A= + &error_abort);=0A= + qdev_realize(DEVICE(&a->ehci2_udc_orgate), NULL, &error_abort);=0A= + qdev_connect_gpio_out(DEVICE(&a->ehci2_udc_orgate), 0,=0A= + aspeed_soc_ast2600_get_irq(s, ASPEED_DEV_EHCI2))= ;=0A= +=0A= /* EHCI */=0A= for (i =3D 0; i < sc->ehcis_num; i++) {=0A= if (!sysbus_realize(SYS_BUS_DEVICE(&s->ehci[i]), errp)) {=0A= @@ -568,10 +583,26 @@ static void aspeed_soc_ast2600_realize(DeviceState *d= ev, Error **errp)=0A= }=0A= aspeed_mmio_map(s->memory, SYS_BUS_DEVICE(&s->ehci[i]), 0,=0A= sc->memmap[ASPEED_DEV_EHCI1 + i]);=0A= - sysbus_connect_irq(SYS_BUS_DEVICE(&s->ehci[i]), 0,=0A= - aspeed_soc_ast2600_get_irq(s,=0A= - ASPEED_DEV_EHCI1 + i= ));=0A= }=0A= + /*=0A= + * EHCI1 has its own IRQ; EHCI2 shares the UDC's IRQ, so route it thro= ugh=0A= + * the OR gate.=0A= + */=0A= + sysbus_connect_irq(SYS_BUS_DEVICE(&s->ehci[0]), 0,=0A= + aspeed_soc_ast2600_get_irq(s, ASPEED_DEV_EHCI1));= =0A= + sysbus_connect_irq(SYS_BUS_DEVICE(&s->ehci[1]), 0,=0A= + qdev_get_gpio_in(DEVICE(&a->ehci2_udc_orgate), 0));= =0A= +=0A= + /* UDC - USB 2.0 Device Controller */=0A= + object_property_set_link(OBJECT(&a->udc), "dram", OBJECT(s->dram_mr),= =0A= + &error_abort);=0A= + if (!sysbus_realize(SYS_BUS_DEVICE(&a->udc), errp)) {=0A= + return;=0A= + }=0A= + aspeed_mmio_map(s->memory, SYS_BUS_DEVICE(&a->udc), 0,=0A= + sc->memmap[ASPEED_DEV_UDC]);=0A= + sysbus_connect_irq(SYS_BUS_DEVICE(&a->udc), 0,=0A= + qdev_get_gpio_in(DEVICE(&a->ehci2_udc_orgate), 1));= =0A= =0A= /* SDMC - SDRAM Memory Controller */=0A= if (!sysbus_realize(SYS_BUS_DEVICE(&s->sdmc), errp)) {=0A= -- =0A= 2.53.0=0A=