| Message ID | 1598924352-89526-6-git-send-email-bmeng.cn@gmail.com |
|---|---|
| State | New |
| Headers | show |
| Series | hw/riscv: Add Microchip PolarFire SoC Icicle Kit board support | expand |
On Mon, Aug 31, 2020 at 6:44 PM Bin Meng <bmeng.cn@gmail.com> wrote: > > From: Bin Meng <bin.meng@windriver.com> > > Microchip PolarFire SoC MMUART is ns16550 compatible, with some > additional registers. Create a simple MMUART model built on top > of the existing ns16550 model. > > Signed-off-by: Bin Meng <bin.meng@windriver.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Alistair > > --- > > (no changes since v2) > > Changes in v2: > - change to update hw/char/meson.build > - add impl.min_access_size and impl.max_access_size as part of > MemoryRegionOps and remove the allignment check > > include/hw/char/mchp_pfsoc_mmuart.h | 61 ++++++++++++++++++++++++++ > hw/char/mchp_pfsoc_mmuart.c | 86 +++++++++++++++++++++++++++++++++++++ > MAINTAINERS | 2 + > hw/char/Kconfig | 3 ++ > hw/char/meson.build | 1 + > 5 files changed, 153 insertions(+) > create mode 100644 include/hw/char/mchp_pfsoc_mmuart.h > create mode 100644 hw/char/mchp_pfsoc_mmuart.c > > diff --git a/include/hw/char/mchp_pfsoc_mmuart.h b/include/hw/char/mchp_pfsoc_mmuart.h > new file mode 100644 > index 0000000..f619902 > --- /dev/null > +++ b/include/hw/char/mchp_pfsoc_mmuart.h > @@ -0,0 +1,61 @@ > +/* > + * Microchip PolarFire SoC MMUART emulation > + * > + * Copyright (c) 2020 Wind River Systems, Inc. > + * > + * Author: > + * Bin Meng <bin.meng@windriver.com> > + * > + * 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_MCHP_PFSOC_MMUART_H > +#define HW_MCHP_PFSOC_MMUART_H > + > +#include "hw/char/serial.h" > + > +#define MCHP_PFSOC_MMUART_REG_SIZE 52 > + > +typedef struct MchpPfSoCMMUartState { > + MemoryRegion iomem; > + hwaddr base; > + qemu_irq irq; > + > + SerialMM *serial; > + > + uint32_t reg[MCHP_PFSOC_MMUART_REG_SIZE / sizeof(uint32_t)]; > +} MchpPfSoCMMUartState; > + > +/** > + * mchp_pfsoc_mmuart_create - Create a Microchip PolarFire SoC MMUART > + * > + * This is a helper routine for board to create a MMUART device that is > + * compatible with Microchip PolarFire SoC. > + * > + * @sysmem: system memory region to map > + * @base: base address of the MMUART registers > + * @irq: IRQ number of the MMUART device > + * @chr: character device to associate to > + * > + * @return: a pointer to the device specific control structure > + */ > +MchpPfSoCMMUartState *mchp_pfsoc_mmuart_create(MemoryRegion *sysmem, > + hwaddr base, qemu_irq irq, Chardev *chr); > + > +#endif /* HW_MCHP_PFSOC_MMUART_H */ > diff --git a/hw/char/mchp_pfsoc_mmuart.c b/hw/char/mchp_pfsoc_mmuart.c > new file mode 100644 > index 0000000..8a002b0 > --- /dev/null > +++ b/hw/char/mchp_pfsoc_mmuart.c > @@ -0,0 +1,86 @@ > +/* > + * Microchip PolarFire SoC MMUART emulation > + * > + * Copyright (c) 2020 Wind River Systems, Inc. > + * > + * Author: > + * Bin Meng <bin.meng@windriver.com> > + * > + * This program is free software; you can redistribute it and/or > + * modify it under the terms of the GNU General Public License as > + * published by the Free Software Foundation; either version 2 or > + * (at your option) version 3 of the License. > + * > + * This program is distributed in the hope that it will be useful, > + * but WITHOUT ANY WARRANTY; without even the implied warranty of > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the > + * GNU General Public License for more details. > + * > + * You should have received a copy of the GNU General Public License along > + * with this program; if not, see <http://www.gnu.org/licenses/>. > + */ > + > +#include "qemu/osdep.h" > +#include "qemu/log.h" > +#include "chardev/char.h" > +#include "exec/address-spaces.h" > +#include "hw/char/mchp_pfsoc_mmuart.h" > + > +static uint64_t mchp_pfsoc_mmuart_read(void *opaque, hwaddr addr, unsigned size) > +{ > + MchpPfSoCMMUartState *s = opaque; > + > + if (addr >= MCHP_PFSOC_MMUART_REG_SIZE) { > + qemu_log_mask(LOG_GUEST_ERROR, "%s: read: addr=0x%" HWADDR_PRIx "\n", > + __func__, addr); > + return 0; > + } > + > + return s->reg[addr / sizeof(uint32_t)]; > +} > + > +static void mchp_pfsoc_mmuart_write(void *opaque, hwaddr addr, > + uint64_t value, unsigned size) > +{ > + MchpPfSoCMMUartState *s = opaque; > + uint32_t val32 = (uint32_t)value; > + > + if (addr >= MCHP_PFSOC_MMUART_REG_SIZE) { > + qemu_log_mask(LOG_GUEST_ERROR, "%s: bad write: addr=0x%" HWADDR_PRIx > + " v=0x%x\n", __func__, addr, val32); > + return; > + } > + > + s->reg[addr / sizeof(uint32_t)] = val32; > +} > + > +static const MemoryRegionOps mchp_pfsoc_mmuart_ops = { > + .read = mchp_pfsoc_mmuart_read, > + .write = mchp_pfsoc_mmuart_write, > + .endianness = DEVICE_LITTLE_ENDIAN, > + .impl = { > + .min_access_size = 4, > + .max_access_size = 4, > + }, > +}; > + > +MchpPfSoCMMUartState *mchp_pfsoc_mmuart_create(MemoryRegion *sysmem, > + hwaddr base, qemu_irq irq, Chardev *chr) > +{ > + MchpPfSoCMMUartState *s; > + > + s = g_new0(MchpPfSoCMMUartState, 1); > + > + memory_region_init_io(&s->iomem, NULL, &mchp_pfsoc_mmuart_ops, s, > + "mchp.pfsoc.mmuart", 0x1000); > + > + s->base = base; > + s->irq = irq; > + > + s->serial = serial_mm_init(sysmem, base, 2, irq, 399193, chr, > + DEVICE_LITTLE_ENDIAN); > + > + memory_region_add_subregion(sysmem, base + 0x20, &s->iomem); > + > + return s; > +} > diff --git a/MAINTAINERS b/MAINTAINERS > index 5359b39..4002d51 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -1320,7 +1320,9 @@ M: Bin Meng <bin.meng@windriver.com> > L: qemu-riscv@nongnu.org > S: Supported > F: hw/riscv/microchip_pfsoc.c > +F: hw/char/mchp_pfsoc_mmuart.c > F: include/hw/riscv/microchip_pfsoc.h > +F: include/hw/char/mchp_pfsoc_mmuart.h > > RX Machines > ----------- > diff --git a/hw/char/Kconfig b/hw/char/Kconfig > index b7e0e4d..1d64555 100644 > --- a/hw/char/Kconfig > +++ b/hw/char/Kconfig > @@ -52,3 +52,6 @@ config RENESAS_SCI > > config AVR_USART > bool > + > +config MCHP_PFSOC_MMUART > + bool > diff --git a/hw/char/meson.build b/hw/char/meson.build > index e888215..ae27932 100644 > --- a/hw/char/meson.build > +++ b/hw/char/meson.build > @@ -32,6 +32,7 @@ softmmu_ss.add(when: 'CONFIG_RASPI', if_true: files('bcm2835_aux.c')) > softmmu_ss.add(when: 'CONFIG_RENESAS_SCI', if_true: files('renesas_sci.c')) > softmmu_ss.add(when: 'CONFIG_SH4', if_true: files('sh_serial.c')) > softmmu_ss.add(when: 'CONFIG_STM32F2XX_USART', if_true: files('stm32f2xx_usart.c')) > +softmmu_ss.add(when: 'CONFIG_MCHP_PFSOC_MMUART', if_true: files('mchp_pfsoc_mmuart.c')) > > specific_ss.add(when: 'CONFIG_TERMINAL3270', if_true: files('terminal3270.c')) > specific_ss.add(when: 'CONFIG_VIRTIO', if_true: files('virtio-serial-bus.c')) > -- > 2.7.4 > >
diff --git a/include/hw/char/mchp_pfsoc_mmuart.h b/include/hw/char/mchp_pfsoc_mmuart.h new file mode 100644 index 0000000..f619902 --- /dev/null +++ b/include/hw/char/mchp_pfsoc_mmuart.h @@ -0,0 +1,61 @@ +/* + * Microchip PolarFire SoC MMUART emulation + * + * Copyright (c) 2020 Wind River Systems, Inc. + * + * Author: + * Bin Meng <bin.meng@windriver.com> + * + * 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_MCHP_PFSOC_MMUART_H +#define HW_MCHP_PFSOC_MMUART_H + +#include "hw/char/serial.h" + +#define MCHP_PFSOC_MMUART_REG_SIZE 52 + +typedef struct MchpPfSoCMMUartState { + MemoryRegion iomem; + hwaddr base; + qemu_irq irq; + + SerialMM *serial; + + uint32_t reg[MCHP_PFSOC_MMUART_REG_SIZE / sizeof(uint32_t)]; +} MchpPfSoCMMUartState; + +/** + * mchp_pfsoc_mmuart_create - Create a Microchip PolarFire SoC MMUART + * + * This is a helper routine for board to create a MMUART device that is + * compatible with Microchip PolarFire SoC. + * + * @sysmem: system memory region to map + * @base: base address of the MMUART registers + * @irq: IRQ number of the MMUART device + * @chr: character device to associate to + * + * @return: a pointer to the device specific control structure + */ +MchpPfSoCMMUartState *mchp_pfsoc_mmuart_create(MemoryRegion *sysmem, + hwaddr base, qemu_irq irq, Chardev *chr); + +#endif /* HW_MCHP_PFSOC_MMUART_H */ diff --git a/hw/char/mchp_pfsoc_mmuart.c b/hw/char/mchp_pfsoc_mmuart.c new file mode 100644 index 0000000..8a002b0 --- /dev/null +++ b/hw/char/mchp_pfsoc_mmuart.c @@ -0,0 +1,86 @@ +/* + * Microchip PolarFire SoC MMUART emulation + * + * Copyright (c) 2020 Wind River Systems, Inc. + * + * Author: + * Bin Meng <bin.meng@windriver.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 or + * (at your option) version 3 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, see <http://www.gnu.org/licenses/>. + */ + +#include "qemu/osdep.h" +#include "qemu/log.h" +#include "chardev/char.h" +#include "exec/address-spaces.h" +#include "hw/char/mchp_pfsoc_mmuart.h" + +static uint64_t mchp_pfsoc_mmuart_read(void *opaque, hwaddr addr, unsigned size) +{ + MchpPfSoCMMUartState *s = opaque; + + if (addr >= MCHP_PFSOC_MMUART_REG_SIZE) { + qemu_log_mask(LOG_GUEST_ERROR, "%s: read: addr=0x%" HWADDR_PRIx "\n", + __func__, addr); + return 0; + } + + return s->reg[addr / sizeof(uint32_t)]; +} + +static void mchp_pfsoc_mmuart_write(void *opaque, hwaddr addr, + uint64_t value, unsigned size) +{ + MchpPfSoCMMUartState *s = opaque; + uint32_t val32 = (uint32_t)value; + + if (addr >= MCHP_PFSOC_MMUART_REG_SIZE) { + qemu_log_mask(LOG_GUEST_ERROR, "%s: bad write: addr=0x%" HWADDR_PRIx + " v=0x%x\n", __func__, addr, val32); + return; + } + + s->reg[addr / sizeof(uint32_t)] = val32; +} + +static const MemoryRegionOps mchp_pfsoc_mmuart_ops = { + .read = mchp_pfsoc_mmuart_read, + .write = mchp_pfsoc_mmuart_write, + .endianness = DEVICE_LITTLE_ENDIAN, + .impl = { + .min_access_size = 4, + .max_access_size = 4, + }, +}; + +MchpPfSoCMMUartState *mchp_pfsoc_mmuart_create(MemoryRegion *sysmem, + hwaddr base, qemu_irq irq, Chardev *chr) +{ + MchpPfSoCMMUartState *s; + + s = g_new0(MchpPfSoCMMUartState, 1); + + memory_region_init_io(&s->iomem, NULL, &mchp_pfsoc_mmuart_ops, s, + "mchp.pfsoc.mmuart", 0x1000); + + s->base = base; + s->irq = irq; + + s->serial = serial_mm_init(sysmem, base, 2, irq, 399193, chr, + DEVICE_LITTLE_ENDIAN); + + memory_region_add_subregion(sysmem, base + 0x20, &s->iomem); + + return s; +} diff --git a/MAINTAINERS b/MAINTAINERS index 5359b39..4002d51 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1320,7 +1320,9 @@ M: Bin Meng <bin.meng@windriver.com> L: qemu-riscv@nongnu.org S: Supported F: hw/riscv/microchip_pfsoc.c +F: hw/char/mchp_pfsoc_mmuart.c F: include/hw/riscv/microchip_pfsoc.h +F: include/hw/char/mchp_pfsoc_mmuart.h RX Machines ----------- diff --git a/hw/char/Kconfig b/hw/char/Kconfig index b7e0e4d..1d64555 100644 --- a/hw/char/Kconfig +++ b/hw/char/Kconfig @@ -52,3 +52,6 @@ config RENESAS_SCI config AVR_USART bool + +config MCHP_PFSOC_MMUART + bool diff --git a/hw/char/meson.build b/hw/char/meson.build index e888215..ae27932 100644 --- a/hw/char/meson.build +++ b/hw/char/meson.build @@ -32,6 +32,7 @@ softmmu_ss.add(when: 'CONFIG_RASPI', if_true: files('bcm2835_aux.c')) softmmu_ss.add(when: 'CONFIG_RENESAS_SCI', if_true: files('renesas_sci.c')) softmmu_ss.add(when: 'CONFIG_SH4', if_true: files('sh_serial.c')) softmmu_ss.add(when: 'CONFIG_STM32F2XX_USART', if_true: files('stm32f2xx_usart.c')) +softmmu_ss.add(when: 'CONFIG_MCHP_PFSOC_MMUART', if_true: files('mchp_pfsoc_mmuart.c')) specific_ss.add(when: 'CONFIG_TERMINAL3270', if_true: files('terminal3270.c')) specific_ss.add(when: 'CONFIG_VIRTIO', if_true: files('virtio-serial-bus.c'))