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[24.22.235.96]) by smtp.gmail.com with ESMTPSA id x1sm22719590pfh.113.2017.11.06.07.48.48 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Mon, 06 Nov 2017 07:48:49 -0800 (PST) From: Andrey Smirnov To: qemu-arm@nongnu.org Date: Mon, 6 Nov 2017 07:48:02 -0800 Message-Id: <20171106154813.19936-20-andrew.smirnov@gmail.com> X-Mailer: git-send-email 2.13.6 In-Reply-To: <20171106154813.19936-1-andrew.smirnov@gmail.com> References: <20171106154813.19936-1-andrew.smirnov@gmail.com> MIME-Version: 1.0 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:400e:c00::242 Subject: [Qemu-devel] [PATCH v3 19/30] i.MX: Add code to emulate SDMA IP block 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: Peter Maydell , Andrey Smirnov , Jason Wang , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , qemu-devel@nongnu.org, yurovsky@gmail.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP Add minimal code needed to allow upstream Linux guest to boot. Cc: Peter Maydell Cc: Jason Wang Cc: Philippe Mathieu-Daudé Cc: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org Cc: yurovsky@gmail.com Signed-off-by: Andrey Smirnov --- hw/dma/Makefile.objs | 1 + hw/dma/imx_sdma.c | 99 +++++++++++++++++++++++++++++++++++++++++++++++ include/hw/dma/imx_sdma.h | 22 +++++++++++ 3 files changed, 122 insertions(+) create mode 100644 hw/dma/imx_sdma.c create mode 100644 include/hw/dma/imx_sdma.h diff --git a/hw/dma/Makefile.objs b/hw/dma/Makefile.objs index 087c8e6855..3cee0b1047 100644 --- a/hw/dma/Makefile.objs +++ b/hw/dma/Makefile.objs @@ -14,3 +14,4 @@ obj-$(CONFIG_XLNX_ZYNQMP) += xlnx_dpdma.o obj-$(CONFIG_OMAP) += omap_dma.o soc_dma.o obj-$(CONFIG_PXA2XX) += pxa2xx_dma.o obj-$(CONFIG_RASPI) += bcm2835_dma.o +obj-$(CONFIG_IMX) += imx_sdma.o diff --git a/hw/dma/imx_sdma.c b/hw/dma/imx_sdma.c new file mode 100644 index 0000000000..0776e41b9a --- /dev/null +++ b/hw/dma/imx_sdma.c @@ -0,0 +1,99 @@ +/* + * Copyright (c) 2017, Impinj, Inc. + * + * i.MX7 IOMUXC block emulation code + * + * Author: Andrey Smirnov + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#include "qemu/osdep.h" +#include "hw/dma/imx_sdma.h" +#include "qemu/log.h" + +static void imx_sdma_reset(DeviceState *dev) +{ + IMXSDMAState *s = IMX_SDMA(dev); + + memset(s->regs, 0, sizeof(s->regs)); +} + +static uint64_t imx_sdma_read(void *opaque, hwaddr offset, + unsigned size) +{ + IMXSDMAState *s = opaque; + return s->regs[offset / sizeof(uint32_t)]; +} + +static void imx_sdma_write(void *opaque, hwaddr offset, + uint64_t value, unsigned size) +{ + IMXSDMAState *s = opaque; + s->regs[offset / sizeof(uint32_t)] = value; +} + +static const struct MemoryRegionOps imx_sdma_ops = { + .read = imx_sdma_read, + .write = imx_sdma_write, + .endianness = DEVICE_NATIVE_ENDIAN, + .impl = { + /* + * Our device would not work correctly if the guest was doing + * unaligned access. This might not be a limitation on the real + * device but in practice there is no reason for a guest to access + * this device unaligned. + */ + .min_access_size = 4, + .max_access_size = 4, + .unaligned = false, + }, +}; + +static void imx_sdma_init(Object *obj) +{ + SysBusDevice *sd = SYS_BUS_DEVICE(obj); + IMXSDMAState *s = IMX_SDMA(obj); + + memory_region_init_io(&s->iomem, + obj, + &imx_sdma_ops, + s, + TYPE_IMX_SDMA ".iomem", + sizeof(s->regs)); + sysbus_init_mmio(sd, &s->iomem); +} + +static const VMStateDescription vmstate_imx_sdma = { + .name = TYPE_IMX_SDMA, + .version_id = 1, + .minimum_version_id = 1, + .fields = (VMStateField[]) { + VMSTATE_UINT32_ARRAY(regs, IMXSDMAState, SDMA_NUM), + VMSTATE_END_OF_LIST() + }, +}; + +static void imx_sdma_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + + dc->reset = imx_sdma_reset; + dc->vmsd = &vmstate_imx_sdma; + dc->desc = "i.MX IOMUXC Module"; +} + +static const TypeInfo imx_sdma_info = { + .name = TYPE_IMX_SDMA, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(IMXSDMAState), + .instance_init = imx_sdma_init, + .class_init = imx_sdma_class_init, +}; + +static void imx_sdma_register_type(void) +{ + type_register_static(&imx_sdma_info); +} +type_init(imx_sdma_register_type) diff --git a/include/hw/dma/imx_sdma.h b/include/hw/dma/imx_sdma.h new file mode 100644 index 0000000000..13c5be7a00 --- /dev/null +++ b/include/hw/dma/imx_sdma.h @@ -0,0 +1,22 @@ +#ifndef IMX_SDMA_H +#define IMX_SDMA_H + +#include "hw/sysbus.h" + +enum IMXSDMARegisters { + SDMA_NUM = 0x300 / sizeof(uint32_t) + 1, +}; + +typedef struct IMXSDMAState { + /*< private >*/ + SysBusDevice parent_obj; + + /*< public >*/ + MemoryRegion iomem; + uint32_t regs[SDMA_NUM]; +} IMXSDMAState; + +#define TYPE_IMX_SDMA "imx-sdma" +#define IMX_SDMA(obj) OBJECT_CHECK(IMXSDMAState, (obj), TYPE_IMX_SDMA) + +#endif /* IMX_SDMA_H */