From nobody Mon Feb 9 08:55:25 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zoho.com; dkim=fail spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1493398576707863.0060330846652; Fri, 28 Apr 2017 09:56:16 -0700 (PDT) Received: from localhost ([::1]:38044 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d49Bn-0006NM-0t for importer@patchew.org; Fri, 28 Apr 2017 12:56:15 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:60834) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d498P-0003t8-JQ for qemu-devel@nongnu.org; Fri, 28 Apr 2017 12:52:47 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1d498N-00069e-77 for qemu-devel@nongnu.org; Fri, 28 Apr 2017 12:52:45 -0400 Received: from mail-pg0-x241.google.com ([2607:f8b0:400e:c05::241]:35219) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1d498M-00068u-UX; Fri, 28 Apr 2017 12:52:43 -0400 Received: by mail-pg0-x241.google.com with SMTP id s1so3752217pgc.2; Fri, 28 Apr 2017 09:52:42 -0700 (PDT) Received: from localhost.localdomain ([124.123.70.3]) by smtp.gmail.com with ESMTPSA id r86sm11383528pfb.24.2017.04.28.09.52.39 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 28 Apr 2017 09:52:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=3Ilyuvl/6XSB0OArCmJlr142tnvzIes9sdf1yxe6DVc=; b=krDyrOU+kDIZkf12MC5djaUWUM/F63g0Jrl+Zw/DfhHjBrvHOiQJ7FaLn/rdCqxEMP 0CNJf+jsYOZ0aIC3NfyvKFQ2AC+Sk/voOCRrTe1ydZNzeaP57b5cagjMYHrm9iqd1NBo 2tpimj0J7S/aNhrmTGtcXs8RBxVE0Wpc8RHgfzMv+TqFXo0OiyU7m1op0Tk3s4CraWrJ RZKCJxvpIeLmy39im618G8L6WeCmPse2bhSwalAgVHu7Wyc1m2MyjK8Bc1uYEsXoPCWw 0BsdPZygLsPKY2bWANhUThFjqpe+GV0vNgMDMU8lXpz1dIU78y0wPTB8/r42qQesccNd J2pA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=3Ilyuvl/6XSB0OArCmJlr142tnvzIes9sdf1yxe6DVc=; b=TdPOFAcS//KoRqzCLCE5jyl6sI84WSUrcV5MFlR6/Gdo+2sRVAiqlvajegS7b9HuTz YBtXLKPgp1Pii5glZ455T8ckzclB6j0k9U2rTkGw8OSo46Pdg54shu98cfIOFPvvFYSk VjqTZgK1MYlznMqOCcTXqS7l6i43du5FJHJadLOo+4vRjIlwDffuKg8bphPlZ1SjWrZO AA5dzNI65nYO42hBgKo8QonR4rSO03n9NbYcql02Ybd3gN48DdDz0uoQWvcaA2+SLPES bCDV4MpBWbgS6s4QlHsB3ntMnISSfqgesTo7HjPUEwjnhxfk9JHNTK3GDY0gwEod1bGO PjNg== X-Gm-Message-State: AN3rC/63gS/txIRI/ghN+2l1Hsi2N9UnVkjwnrh6sFKUdTtfJBE14Dd3 qMvpHXESkItDbQ== X-Received: by 10.84.141.3 with SMTP id 3mr9076277plu.8.1493398361813; Fri, 28 Apr 2017 09:52:41 -0700 (PDT) From: Subbaraya Sundeep To: qemu-devel@nongnu.org, qemu-arm@nongnu.org Date: Fri, 28 Apr 2017 22:21:51 +0530 Message-Id: <1493398313-6673-4-git-send-email-sundeep.lkml@gmail.com> X-Mailer: git-send-email 2.5.0 In-Reply-To: <1493398313-6673-1-git-send-email-sundeep.lkml@gmail.com> References: <1493398313-6673-1-git-send-email-sundeep.lkml@gmail.com> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:400e:c05::241 Subject: [Qemu-devel] [Qemu-devel RFC v3 3/5] msf2: Add Smartfusion2 SPI controller 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@linaro.org, Subbaraya Sundeep , alistair23@gmail.com, crosthwaite.peter@gmail.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZohoMail: RDKM_2 RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Modelled Microsemi's Smartfusion2 SPI controller. Signed-off-by: Subbaraya Sundeep --- Hi Peter and Alistair, I created two SPI controllers as per SoC spec=20 in hw/arm/msf2_soc.c. I am assuming there has to be two busses spi0 and spi1 one for each controller. In board file (hw/arm/msf2_som.c) attached SPI flash to SPI0 controller. I am not able to understand(from hw/ssi/xilinx_spips.c) how to create two busses in hw/ssi/msf2_spi.c.=20 Please help me here. Below is the output of info qtree: (qemu) info qtree bus: main-system-bus type System dev: msf2-soc, id "" cpu-model =3D "cortex-m3" dev: msf2-spi, id "" gpio-out "sysbus-irq" 2 mmio 0000000040011000/0000000000000040 bus: spi0 type SSI dev: msf2-spi, id "" gpio-out "sysbus-irq" 2 mmio 0000000040001000/0000000000000040 bus: spi0 type SSI dev: s25sl12801, id "" gpio-in "ssi-gpio-cs" 1 nonvolatile-cfg =3D 36863 (0x8fff) spansion-cr1nv =3D 0 (0x0) spansion-cr2nv =3D 1 (0x1) spansion-cr3nv =3D 2 (0x2) spansion-cr4nv =3D 16 (0x10) drive =3D "mtd0" Thanks, Sundeep hw/ssi/Makefile.objs | 1 + hw/ssi/msf2_spi.c | 373 ++++++++++++++++++++++++++++++++++++++++++= ++++ include/hw/ssi/msf2_spi.h | 102 +++++++++++++ 3 files changed, 476 insertions(+) create mode 100644 hw/ssi/msf2_spi.c create mode 100644 include/hw/ssi/msf2_spi.h diff --git a/hw/ssi/Makefile.objs b/hw/ssi/Makefile.objs index 487add2..86445d7 100644 --- a/hw/ssi/Makefile.objs +++ b/hw/ssi/Makefile.objs @@ -4,6 +4,7 @@ common-obj-$(CONFIG_XILINX_SPI) +=3D xilinx_spi.o common-obj-$(CONFIG_XILINX_SPIPS) +=3D xilinx_spips.o common-obj-$(CONFIG_ASPEED_SOC) +=3D aspeed_smc.o common-obj-$(CONFIG_STM32F2XX_SPI) +=3D stm32f2xx_spi.o +common-obj-$(CONFIG_MSF2) +=3D msf2_spi.o =20 obj-$(CONFIG_OMAP) +=3D omap_spi.o obj-$(CONFIG_IMX) +=3D imx_spi.o diff --git a/hw/ssi/msf2_spi.c b/hw/ssi/msf2_spi.c new file mode 100644 index 0000000..e7ffa21 --- /dev/null +++ b/hw/ssi/msf2_spi.c @@ -0,0 +1,373 @@ +/* + * SPI controller model of Microsemi SmartFusion2. + * + * Copyright (C) 2017 Subbaraya Sundeep + * + * Permission is hereby granted, free of charge, to any person obtaining a= copy + * of this software and associated documentation files (the "Software"), t= o deal + * in the Software without restriction, including without limitation the r= ights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or se= ll + * 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 OT= HER + * 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 "qemu/osdep.h" +#include "hw/ssi/msf2_spi.h" +#include "sysemu/sysemu.h" +#include "qemu/log.h" + +#ifndef MSF2_SPI_ERR_DEBUG +#define MSF2_SPI_ERR_DEBUG 0 +#endif + +#define DB_PRINT_L(lvl, fmt, args...) do { \ + if (MSF2_SPI_ERR_DEBUG >=3D lvl) { \ + qemu_log("%s: " fmt, __func__, ## args); \ + } \ +} while (0); + +#define DB_PRINT(fmt, args...) DB_PRINT_L(1, fmt, ## args) + +static void txfifo_reset(MSF2SpiState *s) +{ + fifo32_reset(&s->tx_fifo); + + s->regs[R_SPI_STATUS] &=3D ~S_TXFIFOFUL; + s->regs[R_SPI_STATUS] |=3D S_TXFIFOEMP; +} + +static void rxfifo_reset(MSF2SpiState *s) +{ + fifo32_reset(&s->rx_fifo); + + s->regs[R_SPI_STATUS] &=3D ~S_RXFIFOFUL; + s->regs[R_SPI_STATUS] |=3D S_RXFIFOEMP; +} + +static void set_fifodepth(MSF2SpiState *s) +{ + int size =3D s->regs[R_SPI_DFSIZE] & FRAMESZ_MASK; + + if (0 <=3D size && size <=3D 8) { + s->fifo_depth =3D 32; + } + if (9 <=3D size && size <=3D 16) { + s->fifo_depth =3D 16; + } + if (17 <=3D size && size <=3D 32) { + s->fifo_depth =3D 8; + } +} + +static void msf2_spi_do_reset(MSF2SpiState *s) +{ + memset(s->regs, 0, sizeof s->regs); + s->regs[R_SPI_CONTROL] =3D 0x80000102; + s->regs[R_SPI_DFSIZE] =3D 0x4; + s->regs[R_SPI_STATUS] =3D 0x2440; + s->regs[R_SPI_CLKGEN] =3D 0x7; + s->regs[R_SPI_STAT8] =3D 0x7; + s->regs[R_SPI_RIS] =3D 0x0; + + s->fifo_depth =3D 4; + s->frame_count =3D 1; + s->enabled =3D false; + + rxfifo_reset(s); + txfifo_reset(s); +} + +static void update_mis(MSF2SpiState *s) +{ + uint32_t reg =3D s->regs[R_SPI_CONTROL]; + uint32_t tmp; + + /* + * form the Control register interrupt enable bits + * same as RIS, MIS and Interrupt clear registers for simplicity + */ + tmp =3D ((reg & C_INTRXOVRFLO) >> 4) | ((reg & C_INTRXDATA) >> 3) | + ((reg & C_INTTXDATA) >> 5); + s->regs[R_SPI_MIS] |=3D tmp & s->regs[R_SPI_RIS]; +} + +static void spi_update_irq(MSF2SpiState *s) +{ + int irq; + + update_mis(s); + irq =3D !!(s->regs[R_SPI_MIS]); + + qemu_set_irq(s->irq, irq); +} + +static void msf2_spi_reset(DeviceState *d) +{ + msf2_spi_do_reset(MSF2_SPI(d)); +} + +static uint64_t +spi_read(void *opaque, hwaddr addr, unsigned int size) +{ + MSF2SpiState *s =3D opaque; + uint32_t r =3D 0; + + addr >>=3D 2; + switch (addr) { + case R_SPI_RX: + s->regs[R_SPI_STATUS] &=3D ~S_RXFIFOFUL; + s->regs[R_SPI_STATUS] &=3D ~RXCHOVRF; + r =3D fifo32_pop(&s->rx_fifo); + if (fifo32_is_empty(&s->rx_fifo)) { + s->regs[R_SPI_STATUS] |=3D S_RXFIFOEMP; + } + break; + + case R_SPI_MIS: + update_mis(s); + r =3D s->regs[R_SPI_MIS]; + break; + + default: + if (addr < ARRAY_SIZE(s->regs)) { + r =3D s->regs[addr]; + } + break; + } + + DB_PRINT("addr=3D" TARGET_FMT_plx " =3D %x\n", addr * 4, r); + spi_update_irq(s); + return r; +} + +static void assert_cs(MSF2SpiState *s) +{ + qemu_set_irq(s->cs_line, 0); +} + +static void deassert_cs(MSF2SpiState *s) +{ + qemu_set_irq(s->cs_line, 1); +} + +static void spi_flush_txfifo(MSF2SpiState *s) +{ + uint32_t tx; + uint32_t rx; + bool sps =3D !!(s->regs[R_SPI_CONTROL] & C_SPS); + + /* + * Chip Select(CS) is automatically controlled by this controller. + * If SPS bit is set in Control register then CS is asserted + * until all the frames set in frame count of Control register are + * transferred. If SPS is not set then CS pulses between frames. + * Note that Slave Select register specifies which of the CS line + * has to be controlled automatically by controller. Bits SS[7:1] are = for + * masters in FPGA fabric since we model only Microcontroller subsystem + * of Smartfusion2 we control only one CS(SS[0]) line. + */ + while (!fifo32_is_empty(&s->tx_fifo) && s->frame_count) { + assert_cs(s); + + s->regs[R_SPI_STATUS] &=3D ~TXDONE; + s->regs[R_SPI_STATUS] &=3D ~RXRDY; + + tx =3D fifo32_pop(&s->tx_fifo); + DB_PRINT("data tx:%x\n", tx); + rx =3D ssi_transfer(s->spi, tx); + DB_PRINT("data rx:%x\n", rx); + + if (fifo32_num_used(&s->rx_fifo) =3D=3D s->fifo_depth) { + s->regs[R_SPI_STATUS] |=3D RXCHOVRF; + s->regs[R_SPI_RIS] |=3D RXCHOVRF; + } else { + fifo32_push(&s->rx_fifo, rx); + s->regs[R_SPI_STATUS] &=3D ~S_RXFIFOEMP; + if (fifo32_num_used(&s->rx_fifo) =3D=3D (s->fifo_depth - 1)) { + s->regs[R_SPI_STATUS] |=3D S_RXFIFOFULNXT; + } + if (fifo32_num_used(&s->rx_fifo) =3D=3D s->fifo_depth) { + s->regs[R_SPI_STATUS] |=3D S_RXFIFOFUL; + } + } + s->frame_count--; + if (!sps) { + deassert_cs(s); + assert_cs(s); + } + } + + if (!sps) { + deassert_cs(s); + } + + if (!s->frame_count) { + s->frame_count =3D (s->regs[R_SPI_CONTROL] & FMCOUNT_MASK) >> + FMCOUNT_SHIFT; + if (sps) { + deassert_cs(s); + } + s->regs[R_SPI_RIS] |=3D TXDONE; + s->regs[R_SPI_RIS] |=3D RXRDY; + s->regs[R_SPI_STATUS] |=3D TXDONE; + s->regs[R_SPI_STATUS] |=3D RXRDY; + } +} + +static void spi_write(void *opaque, hwaddr addr, + uint64_t val64, unsigned int size) +{ + MSF2SpiState *s =3D opaque; + uint32_t value =3D val64; + + DB_PRINT("addr=3D" TARGET_FMT_plx " =3D %x\n", addr, value); + addr >>=3D 2; + + switch (addr) { + case R_SPI_TX: + /* adding to already full FIFO */ + if (fifo32_num_used(&s->tx_fifo) =3D=3D s->fifo_depth) { + break; + } + s->regs[R_SPI_STATUS] &=3D ~S_TXFIFOEMP; + fifo32_push(&s->tx_fifo, value); + if (fifo32_num_used(&s->tx_fifo) =3D=3D (s->fifo_depth - 1)) { + s->regs[R_SPI_STATUS] |=3D S_TXFIFOFULNXT; + } + if (fifo32_num_used(&s->tx_fifo) =3D=3D s->fifo_depth) { + s->regs[R_SPI_STATUS] |=3D S_TXFIFOFUL; + } + if (s->enabled) { + spi_flush_txfifo(s); + } + break; + + case R_SPI_CONTROL: + s->regs[R_SPI_CONTROL] =3D value; + if (value & C_BIGFIFO) { + set_fifodepth(s); + } else { + s->fifo_depth =3D 4; + } + if (value & C_ENABLE) { + s->enabled =3D true; + } else { + s->enabled =3D false; + } + s->frame_count =3D (value & FMCOUNT_MASK) >> FMCOUNT_SHIFT; + if (value & C_RESET) { + msf2_spi_do_reset(s); + } + break; + + case R_SPI_DFSIZE: + if (s->enabled) { + break; + } + s->regs[R_SPI_DFSIZE] =3D value; + break; + + case R_SPI_INTCLR: + s->regs[R_SPI_INTCLR] =3D value; + if (value & TXDONE) { + s->regs[R_SPI_RIS] &=3D ~TXDONE; + } + if (value & RXRDY) { + s->regs[R_SPI_RIS] &=3D ~RXRDY; + } + if (value & RXCHOVRF) { + s->regs[R_SPI_RIS] &=3D ~RXCHOVRF; + } + break; + + case R_SPI_MIS: + case R_SPI_STATUS: + case R_SPI_RIS: + break; + + default: + if (addr < ARRAY_SIZE(s->regs)) { + s->regs[addr] =3D value; + } + break; + } + + spi_update_irq(s); +} + +static const MemoryRegionOps spi_ops =3D { + .read =3D spi_read, + .write =3D spi_write, + .endianness =3D DEVICE_NATIVE_ENDIAN, + .valid =3D { + .min_access_size =3D 4, + .max_access_size =3D 4 + } +}; + +static void msf2_spi_realize(DeviceState *dev, Error **errp) +{ + MSF2SpiState *s =3D MSF2_SPI(dev); + SysBusDevice *sbd =3D SYS_BUS_DEVICE(dev); + + DB_PRINT("\n"); + + s->spi =3D ssi_create_bus(dev, "spi0"); + + sysbus_init_irq(sbd, &s->irq); + ssi_auto_connect_slaves(dev, &s->cs_line, s->spi); + sysbus_init_irq(sbd, &s->cs_line); + + memory_region_init_io(&s->mmio, OBJECT(s), &spi_ops, s, + TYPE_MSF2_SPI, R_SPI_MAX * 4); + sysbus_init_mmio(sbd, &s->mmio); + + fifo32_create(&s->tx_fifo, FIFO_CAPACITY); + fifo32_create(&s->rx_fifo, FIFO_CAPACITY); +} + +static const VMStateDescription vmstate_msf2_spi =3D { + .name =3D TYPE_MSF2_SPI, + .version_id =3D 1, + .minimum_version_id =3D 1, + .fields =3D (VMStateField[]) { + VMSTATE_FIFO32(tx_fifo, MSF2SpiState), + VMSTATE_FIFO32(rx_fifo, MSF2SpiState), + VMSTATE_UINT32_ARRAY(regs, MSF2SpiState, R_SPI_MAX), + VMSTATE_END_OF_LIST() + } +}; + +static void msf2_spi_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc =3D DEVICE_CLASS(klass); + + dc->realize =3D msf2_spi_realize; + dc->reset =3D msf2_spi_reset; + dc->vmsd =3D &vmstate_msf2_spi; +} + +static const TypeInfo msf2_spi_info =3D { + .name =3D TYPE_MSF2_SPI, + .parent =3D TYPE_SYS_BUS_DEVICE, + .instance_size =3D sizeof(MSF2SpiState), + .class_init =3D msf2_spi_class_init, +}; + +static void msf2_spi_register_types(void) +{ + type_register_static(&msf2_spi_info); +} + +type_init(msf2_spi_register_types) diff --git a/include/hw/ssi/msf2_spi.h b/include/hw/ssi/msf2_spi.h new file mode 100644 index 0000000..7f266c2 --- /dev/null +++ b/include/hw/ssi/msf2_spi.h @@ -0,0 +1,102 @@ +/* + * Microsemi SmartFusion2 SPI + * + * Copyright (c) 2017 Subbaraya Sundeep + * + * Permission is hereby granted, free of charge, to any person obtaining a= copy + * of this software and associated documentation files (the "Software"), t= o deal + * in the Software without restriction, including without limitation the r= ights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or se= ll + * 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 OT= HER + * 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_MSF2_SPI_H +#define HW_MSF2_SPI_H + +#include "hw/sysbus.h" +#include "hw/hw.h" +#include "hw/ssi/ssi.h" +#include "qemu/fifo32.h" + +#define FIFO_CAPACITY 32 +#define FIFO_CAPACITY 32 + +#define R_SPI_CONTROL 0 +#define R_SPI_DFSIZE 1 +#define R_SPI_STATUS 2 +#define R_SPI_INTCLR 3 +#define R_SPI_RX 4 +#define R_SPI_TX 5 +#define R_SPI_CLKGEN 6 +#define R_SPI_SS 7 +#define R_SPI_MIS 8 +#define R_SPI_RIS 9 +#define R_SPI_STAT8 15 +#define R_SPI_MAX 16 + +#define S_RXFIFOFUL (1 << 4) +#define S_RXFIFOFULNXT (1 << 5) +#define S_RXFIFOEMP (1 << 6) +#define S_RXFIFOEMPNXT (1 << 7) +#define S_TXFIFOFUL (1 << 8) +#define S_TXFIFOFULNXT (1 << 9) +#define S_TXFIFOEMP (1 << 10) +#define S_TXFIFOEMPNXT (1 << 11) +#define S_FRAMESTART (1 << 12) +#define S_SSEL (1 << 13) +#define S_ACTIVE (1 << 14) + +#define C_ENABLE (1 << 0) +#define C_MODE (1 << 1) +#define C_INTRXDATA (1 << 4) +#define C_INTTXDATA (1 << 5) +#define C_INTRXOVRFLO (1 << 6) +#define C_SPS (1 << 26) +#define C_BIGFIFO (1 << 29) +#define C_RESET (1 << 31) + +#define FRAMESZ_MASK 0x1F +#define FMCOUNT_MASK 0x00FFFF00 +#define FMCOUNT_SHIFT 8 + +#define TXDONE (1 << 0) +#define RXRDY (1 << 1) +#define RXCHOVRF (1 << 2) + +#define TYPE_MSF2_SPI "msf2-spi" +#define MSF2_SPI(obj) OBJECT_CHECK(MSF2SpiState, (obj), TYPE_MSF2_SPI) + +typedef struct MSF2SpiState { + SysBusDevice parent_obj; + + MemoryRegion mmio; + + qemu_irq irq; + + qemu_irq cs_line; + + SSIBus *spi; + + Fifo32 rx_fifo; + Fifo32 tx_fifo; + + int fifo_depth; + uint32_t frame_count; + bool enabled; + + uint32_t regs[R_SPI_MAX]; +} MSF2SpiState; + +#endif /* HW_MSF2_SPI_H */ --=20 2.5.0