From patchwork Sat Apr 25 08:18:51 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alistair Francis X-Patchwork-Id: 464469 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org 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 66F34140306 for ; Sat, 25 Apr 2015 18:21:29 +1000 (AEST) Authentication-Results: ozlabs.org; dkim=fail reason="verification failed; unprotected key" header.d=gmail.com header.i=@gmail.com header.b=ePJT6mAt; dkim-adsp=none (unprotected policy); dkim-atps=neutral Received: from localhost ([::1]:47635 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YlvL5-0006qM-Bs for incoming@patchwork.ozlabs.org; Sat, 25 Apr 2015 04:21:27 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:58678) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YlvIg-0002AK-AD for qemu-devel@nongnu.org; Sat, 25 Apr 2015 04:19:00 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YlvIe-0000ni-Lb for qemu-devel@nongnu.org; Sat, 25 Apr 2015 04:18:58 -0400 Received: from mail-pd0-x22c.google.com ([2607:f8b0:400e:c02::22c]:34315) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YlvIe-0000mK-2n for qemu-devel@nongnu.org; Sat, 25 Apr 2015 04:18:56 -0400 Received: by pdbqa5 with SMTP id qa5so71225331pdb.1 for ; Sat, 25 Apr 2015 01:18:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=BJQWKFkqNaQSlH7geCiuzzXQN1KcqXHVG7EsRLxGQyE=; b=ePJT6mAtOssKog0r6x/27aGz+QlvZLQAx9GJLTlk0tFN7iQrHX/Hg8TV7UKuvt8hZa UMDoEJ4ZwQVCZpOrfKUpgSOVFNYf9meUOw+ixNClCzX0YV04TvsyVmLzets+FWOy7avM uOC5nF6sono1AKBNvcOlcrqbkHByfDkgVR2KGcPR/rB+tV/E18lOoAvsE1GRs89QDyUX +PbLTVuL5mg2x9t65cT7Zi4GaSiLfuLrL9evIhFYF4Q8bnDNPJX76eGBYIKLPsedbs/8 aA8FBkSRb0MevrtJCrJVmP2j4ZueDz0MHwgx0S7I2QV5cCfQspYG5cjfp5zq5SLeABMd nyuQ== X-Received: by 10.68.237.198 with SMTP id ve6mr4353628pbc.115.1429949935469; Sat, 25 Apr 2015 01:18:55 -0700 (PDT) Received: from localhost (220-245-42-228.tpgi.com.au. [220.245.42.228]) by mx.google.com with ESMTPSA id k3sm1648217pdr.50.2015.04.25.01.18.54 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 25 Apr 2015 01:18:54 -0700 (PDT) From: Alistair Francis X-Google-Original-From: Alistair Francis To: qemu-devel@nongnu.org, peter.maydell@linaro.org Date: Sat, 25 Apr 2015 18:18:51 +1000 Message-Id: X-Mailer: git-send-email 2.1.4 In-Reply-To: References: X-detected-operating-system: by eggs.gnu.org: Error: Malformed IPv6 address (bad octet value). X-Received-From: 2607:f8b0:400e:c02::22c Cc: alistair23@gmail.com Subject: [Qemu-devel] [PATCH v1 4/7] STM32F2xx: Add the SPI device X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Add the STM32F2xx SPI device. Signed-off-by: Alistair Francis --- default-configs/arm-softmmu.mak | 1 + hw/ssi/Makefile.objs | 1 + hw/ssi/stm32f2xx_spi.c | 211 ++++++++++++++++++++++++++++++++++++++++ include/hw/ssi/stm32f2xx_spi.h | 74 ++++++++++++++ 4 files changed, 287 insertions(+) create mode 100644 hw/ssi/stm32f2xx_spi.c create mode 100644 include/hw/ssi/stm32f2xx_spi.h diff --git a/default-configs/arm-softmmu.mak b/default-configs/arm-softmmu.mak index 2b16590..580fac3 100644 --- a/default-configs/arm-softmmu.mak +++ b/default-configs/arm-softmmu.mak @@ -85,6 +85,7 @@ CONFIG_STM32F2XX_TIMER=y CONFIG_STM32F2XX_USART=y CONFIG_STM32F2XX_SYSCFG=y CONFIG_STM32F2XX_ADC=y +CONFIG_STM32F2XX_SPI=y CONFIG_STM32F205_SOC=y CONFIG_VERSATILE_PCI=y diff --git a/hw/ssi/Makefile.objs b/hw/ssi/Makefile.objs index 9555825..c674247 100644 --- a/hw/ssi/Makefile.objs +++ b/hw/ssi/Makefile.objs @@ -2,5 +2,6 @@ common-obj-$(CONFIG_PL022) += pl022.o common-obj-$(CONFIG_SSI) += ssi.o common-obj-$(CONFIG_XILINX_SPI) += xilinx_spi.o common-obj-$(CONFIG_XILINX_SPIPS) += xilinx_spips.o +common-obj-$(CONFIG_STM32F2XX_SPI) += stm32f2xx_spi.o obj-$(CONFIG_OMAP) += omap_spi.o diff --git a/hw/ssi/stm32f2xx_spi.c b/hw/ssi/stm32f2xx_spi.c new file mode 100644 index 0000000..11bbdef --- /dev/null +++ b/hw/ssi/stm32f2xx_spi.c @@ -0,0 +1,211 @@ +/* + * STM32F405 SPI + * + * Copyright (c) 2014 Alistair Francis + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#include "hw/ssi/stm32f2xx_spi.h" + +#ifndef STM_SPI_ERR_DEBUG +#define STM_SPI_ERR_DEBUG 0 +#endif + +#define DB_PRINT_L(lvl, fmt, args...) do { \ + if (STM_SPI_ERR_DEBUG >= lvl) { \ + qemu_log("%s: " fmt, __func__, ## args); \ + } \ +} while (0); + +#define DB_PRINT(fmt, args...) DB_PRINT_L(1, fmt, ## args) + +static void stm32f2xx_spi_reset(DeviceState *dev) +{ + STM32F2XXSpiState *s = STM32F2XX_SPI(dev); + + s->spi_cr1 = 0x00000000; + s->spi_cr2 = 0x00000000; + s->spi_sr = 0x0000000A; + s->spi_dr = 0x0000000C; + s->spi_crcpr = 0x00000007; + s->spi_rxcrcr = 0x00000000; + s->spi_txcrcr = 0x00000000; + s->spi_i2scfgr = 0x00000000; + s->spi_i2spr = 0x00000002; +} + +static void stm32f2xx_spi_transfer(STM32F2XXSpiState *s) +{ + DB_PRINT("Data to send: 0x%x\n", s->spi_dr); + + s->spi_dr = ssi_transfer(s->ssi, s->spi_dr); + s->spi_sr |= STM_SPI_SR_RXNE; + + DB_PRINT("Data recieved: 0x%x\n", s->spi_dr); +} + +static uint64_t stm32f2xx_spi_read(void *opaque, hwaddr addr, + unsigned int size) +{ + STM32F2XXSpiState *s = opaque; + uint32_t retval; + + DB_PRINT("Read 0x%"HWADDR_PRIx"\n", addr); + + switch (addr) { + case STM_SPI_CR1: + return s->spi_cr1; + case STM_SPI_CR2: + qemu_log_mask(LOG_UNIMP, "%s: Interrupts and DMA are not implemented\n", + __func__); + return s->spi_cr2; + case STM_SPI_SR: + retval = s->spi_sr; + return retval; + case STM_SPI_DR: + s->spi_sr |= STM_SPI_SR_BSY; + stm32f2xx_spi_transfer(s); + s->spi_sr &= ~STM_SPI_SR_RXNE; + s->spi_sr &= ~STM_SPI_SR_BSY; + return s->spi_dr; + case STM_SPI_CRCPR: + qemu_log_mask(LOG_UNIMP, "%s: CRC is not implemented, the registers " \ + "are includded for compatability\n", __func__); + return s->spi_crcpr; + case STM_SPI_RXCRCR: + qemu_log_mask(LOG_UNIMP, "%s: CRC is not implemented, the registers " \ + "are includded for compatability\n", __func__); + return s->spi_rxcrcr; + case STM_SPI_TXCRCR: + qemu_log_mask(LOG_UNIMP, "%s: CRC is not implemented, the registers " \ + "are includded for compatability\n", __func__); + return s->spi_txcrcr; + case STM_SPI_I2SCFGR: + qemu_log_mask(LOG_UNIMP, "%s: I2S is not implemented, the registers " \ + "are includded for compatability\n", __func__); + return s->spi_i2scfgr; + case STM_SPI_I2SPR: + qemu_log_mask(LOG_UNIMP, "%s: I2S is not implemented, the registers " \ + "are includded for compatability\n", __func__); + return s->spi_i2spr; + default: + qemu_log_mask(LOG_GUEST_ERROR, "%s: Bad offset 0x%"HWADDR_PRIx"\n", + __func__, addr); + } + + return 0; +} + +static void stm32f2xx_spi_write(void *opaque, hwaddr addr, + uint64_t val64, unsigned int size) +{ + STM32F2XXSpiState *s = opaque; + uint32_t value = val64; + + DB_PRINT("Write 0x%x at 0x%"HWADDR_PRIx"\n", value, addr); + + switch (addr) { + case STM_SPI_CR1: + s->spi_cr1 = value; + return; + case STM_SPI_CR2: + qemu_log_mask(LOG_UNIMP, "%s: " \ + "Interrupts and DMA are not implemented\n", __func__); + s->spi_cr2 = value; + return; + case STM_SPI_SR: + /* Read only register, except for clearing the CRCERR bit, which + * is not supported + */ + return; + case STM_SPI_DR: + s->spi_sr |= STM_SPI_SR_BSY; + s->spi_sr &= ~STM_SPI_SR_TXE; + s->spi_dr = value; + stm32f2xx_spi_transfer(s); + s->spi_sr |= STM_SPI_SR_TXE; + s->spi_sr &= ~STM_SPI_SR_BSY; + return; + case STM_SPI_CRCPR: + qemu_log_mask(LOG_UNIMP, "%s: CRC is not implemented\n", __func__); + return; + case STM_SPI_RXCRCR: + qemu_log_mask(LOG_GUEST_ERROR, "%s: Read only register: " \ + "0x%"HWADDR_PRIx"\n", __func__, addr); + return; + case STM_SPI_TXCRCR: + qemu_log_mask(LOG_GUEST_ERROR, "%s: Read only register: " \ + "0x%"HWADDR_PRIx"\n", __func__, addr); + return; + case STM_SPI_I2SCFGR: + qemu_log_mask(LOG_UNIMP, "%s: " \ + "I2S is not implemented\n", __func__); + return; + case STM_SPI_I2SPR: + qemu_log_mask(LOG_UNIMP, "%s: " \ + "I2S is not implemented\n", __func__); + return; + default: + qemu_log_mask(LOG_GUEST_ERROR, + "%s: Bad offset 0x%"HWADDR_PRIx"\n", __func__, addr); + } +} + +static const MemoryRegionOps stm32f2xx_spi_ops = { + .read = stm32f2xx_spi_read, + .write = stm32f2xx_spi_write, + .endianness = DEVICE_NATIVE_ENDIAN, +}; + +static void stm32f2xx_spi_init(Object *obj) +{ + STM32F2XXSpiState *s = STM32F2XX_SPI(obj); + DeviceState *dev = DEVICE(obj); + + memory_region_init_io(&s->mmio, obj, &stm32f2xx_spi_ops, s, + TYPE_STM32F2XX_SPI, 0x400); + sysbus_init_mmio(SYS_BUS_DEVICE(obj), &s->mmio); + + sysbus_init_irq(SYS_BUS_DEVICE(obj), &s->irq); + + s->ssi = ssi_create_bus(dev, "ssi"); +} + +static void stm32f2xx_spi_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + + dc->reset = stm32f2xx_spi_reset; +} + +static const TypeInfo stm32f2xx_spi_info = { + .name = TYPE_STM32F2XX_SPI, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(STM32F2XXSpiState), + .instance_init = stm32f2xx_spi_init, + .class_init = stm32f2xx_spi_class_init, +}; + +static void stm32f2xx_spi_register_types(void) +{ + type_register_static(&stm32f2xx_spi_info); +} + +type_init(stm32f2xx_spi_register_types) diff --git a/include/hw/ssi/stm32f2xx_spi.h b/include/hw/ssi/stm32f2xx_spi.h new file mode 100644 index 0000000..75dd6a8 --- /dev/null +++ b/include/hw/ssi/stm32f2xx_spi.h @@ -0,0 +1,74 @@ +/* + * STM32F2XX SPI + * + * Copyright (c) 2014 Alistair Francis + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#ifndef HW_STM32F2XX_SPI_H +#define HW_STM32F2XX_SPI_H + +#include "hw/sysbus.h" +#include "hw/hw.h" +#include "hw/ssi.h" + +#define STM_SPI_CR1 0x00 +#define STM_SPI_CR2 0x04 +#define STM_SPI_SR 0x08 +#define STM_SPI_DR 0x0C +#define STM_SPI_CRCPR 0x10 +#define STM_SPI_RXCRCR 0x14 +#define STM_SPI_TXCRCR 0x18 +#define STM_SPI_I2SCFGR 0x1C +#define STM_SPI_I2SPR 0x20 + +#define STM_SPI_CR1_SPE (1 << 6) +#define STM_SPI_CR1_MSTR (1 << 2) + +#define STM_SPI_SR_BSY (1 << 7) +#define STM_SPI_SR_TXE (1 << 1) +#define STM_SPI_SR_RXNE 1 + +#define TYPE_STM32F2XX_SPI "stm32f2xx-spi" +#define STM32F2XX_SPI(obj) \ + OBJECT_CHECK(STM32F2XXSpiState, (obj), TYPE_STM32F2XX_SPI) + +typedef struct { + /* */ + SysBusDevice parent_obj; + + /* */ + MemoryRegion mmio; + + uint32_t spi_cr1; + uint32_t spi_cr2; + uint32_t spi_sr; + uint32_t spi_dr; + uint32_t spi_crcpr; + uint32_t spi_rxcrcr; + uint32_t spi_txcrcr; + uint32_t spi_i2scfgr; + uint32_t spi_i2spr; + + qemu_irq irq; + SSIBus *ssi; +} STM32F2XXSpiState; + +#endif /* HW_STM32F2XX_SPI_H */