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[189.204.159.168]) by smtp.gmail.com with ESMTPSA id r23sm2391176otg.49.2019.05.31.06.43.24 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 31 May 2019 06:43:25 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Date: Fri, 31 May 2019 08:42:57 -0500 Message-Id: <20190531134315.4109-6-richard.henderson@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190531134315.4109-1-richard.henderson@linaro.org> References: <20190531134315.4109-1-richard.henderson@linaro.org> MIME-Version: 1.0 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::242 Subject: [Qemu-devel] [PATCH v16 05/23] hw/intc: RX62N interrupt controller (ICUa) 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: philmd@redhat.com, ysato@users.sourceforge.jp Errors-To: qemu-devel-bounces+patch=linaro.org@nongnu.org Sender: "Qemu-devel" From: Yoshinori Sato This implementation supported only ICUa. Hardware manual. https://www.renesas.com/us/en/doc/products/mpumcu/doc/rx_family/r01uh0033ej0140_rx62n.pdf Signed-off-by: Yoshinori Sato Reviewed-by: Alex Bennée Reviewed-by: Philippe Mathieu-Daudé Message-Id: <20190516055244.95559-6-ysato@users.sourceforge.jp> Signed-off-by: Richard Henderson --- include/hw/intc/rx_icu.h | 56 ++++++ hw/intc/rx_icu.c | 376 +++++++++++++++++++++++++++++++++++++++ hw/intc/Kconfig | 3 + hw/intc/Makefile.objs | 1 + 4 files changed, 436 insertions(+) create mode 100644 include/hw/intc/rx_icu.h create mode 100644 hw/intc/rx_icu.c -- 2.17.1 diff --git a/include/hw/intc/rx_icu.h b/include/hw/intc/rx_icu.h new file mode 100644 index 0000000000..acfcf06aef --- /dev/null +++ b/include/hw/intc/rx_icu.h @@ -0,0 +1,56 @@ +#ifndef RX_ICU_H +#define RX_ICU_H + +#include "qemu-common.h" +#include "hw/irq.h" + +enum TRG_MODE { + TRG_LEVEL = 0, + TRG_NEDGE = 1, /* Falling */ + TRG_PEDGE = 2, /* Raising */ + TRG_BEDGE = 3, /* Both */ +}; + +struct IRQSource { + enum TRG_MODE sense; + int level; +}; + +enum { + /* Software interrupt request */ + SWI = 27, + NR_IRQS = 256, +}; + +struct RXICUState { + SysBusDevice parent_obj; + + MemoryRegion memory; + struct IRQSource src[NR_IRQS]; + char *icutype; + uint32_t nr_irqs; + uint32_t *map; + uint32_t nr_sense; + uint32_t *init_sense; + + uint8_t ir[NR_IRQS]; + uint8_t dtcer[NR_IRQS]; + uint8_t ier[NR_IRQS / 8]; + uint8_t ipr[142]; + uint8_t dmasr[4]; + uint16_t fir; + uint8_t nmisr; + uint8_t nmier; + uint8_t nmiclr; + uint8_t nmicr; + int req_irq; + qemu_irq _irq; + qemu_irq _fir; + qemu_irq _swi; +}; +typedef struct RXICUState RXICUState; + +#define TYPE_RXICU "rx-icu" +#define RXICU(obj) OBJECT_CHECK(RXICUState, (obj), TYPE_RXICU) + +#endif /* RX_ICU_H */ diff --git a/hw/intc/rx_icu.c b/hw/intc/rx_icu.c new file mode 100644 index 0000000000..cb28c7a8d2 --- /dev/null +++ b/hw/intc/rx_icu.c @@ -0,0 +1,376 @@ +/* + * RX Interrupt Control Unit + * + * Warning: Only ICUa is supported. + * + * Datasheet: RX62N Group, RX621 Group User's Manual: Hardware + * (Rev.1.40 R01UH0033EJ0140) + * + * Copyright (c) 2019 Yoshinori Sato + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2 or later, as published by the Free Software Foundation. + * + * This program is distributed in the hope 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 . + */ + +#include "qemu/osdep.h" +#include "qemu-common.h" +#include "qemu/log.h" +#include "qapi/error.h" +#include "cpu.h" +#include "hw/hw.h" +#include "hw/sysbus.h" +#include "hw/registerfields.h" +#include "hw/intc/rx_icu.h" +#include "qemu/error-report.h" + +REG8(IR, 0) + FIELD(IR, IR, 0, 1) +REG8(DTCER, 0x100) + FIELD(DTCER, DTCE, 0, 1) +REG8(IER, 0x200) +REG8(SWINTR, 0x2e0) + FIELD(SWINTR, SWINT, 0, 1) +REG16(FIR, 0x2f0) + FIELD(FIR, FVCT, 0, 8) + FIELD(FIR, FIEN, 15, 1) +REG8(IPR, 0x300) + FIELD(IPR, IPR, 0, 4) +REG8(DMRSR, 0x400) +REG8(IRQCR, 0x500) + FIELD(IRQCR, IRQMD, 2, 2) +REG8(NMISR, 0x580) + FIELD(NMISR, NMIST, 0, 1) + FIELD(NMISR, LVDST, 1, 1) + FIELD(NMISR, OSTST, 2, 1) +REG8(NMIER, 0x581) + FIELD(NMIER, NMIEN, 0, 1) + FIELD(NMIER, LVDEN, 1, 1) + FIELD(NMIER, OSTEN, 2, 1) +REG8(NMICLR, 0x582) + FIELD(NMICLR, NMICLR, 0, 1) + FIELD(NMICLR, OSTCLR, 2, 1) +REG8(NMICR, 0x583) + FIELD(NMICR, NMIMD, 3, 1) + +#define request(icu, n) (icu->ipr[icu->map[n]] << 8 | n) + +static void set_irq(RXICUState *icu, int n_IRQ, int req) +{ + if ((icu->fir & R_FIR_FIEN_MASK) && + (icu->fir & R_FIR_FVCT_MASK) == n_IRQ) { + qemu_set_irq(icu->_fir, req); + } else { + qemu_set_irq(icu->_irq, req); + } +} + +static void rxicu_request(RXICUState *icu, int n_IRQ) +{ + int enable; + + enable = icu->ier[n_IRQ / 8] & (1 << (n_IRQ & 7)); + if (n_IRQ > 0 && enable != 0 && atomic_read(&icu->req_irq) < 0) { + atomic_set(&icu->req_irq, n_IRQ); + set_irq(icu, n_IRQ, request(icu, n_IRQ)); + } +} + +static void rxicu_set_irq(void *opaque, int n_IRQ, int level) +{ + RXICUState *icu = opaque; + struct IRQSource *src; + int issue; + + if (n_IRQ >= NR_IRQS) { + error_report("%s: IRQ %d out of range", __func__, n_IRQ); + return; + } + + src = &icu->src[n_IRQ]; + + level = (level != 0); + switch (src->sense) { + case TRG_LEVEL: + /* level-sensitive irq */ + issue = level; + src->level = level; + break; + case TRG_NEDGE: + issue = (level == 0 && src->level == 1); + src->level = level; + break; + case TRG_PEDGE: + issue = (level == 1 && src->level == 0); + src->level = level; + break; + case TRG_BEDGE: + issue = ((level ^ src->level) & 1); + src->level = level; + break; + default: + g_assert_not_reached(); + } + if (issue == 0 && src->sense == TRG_LEVEL) { + icu->ir[n_IRQ] = 0; + if (atomic_read(&icu->req_irq) == n_IRQ) { + /* clear request */ + set_irq(icu, n_IRQ, 0); + atomic_set(&icu->req_irq, -1); + } + return; + } + if (issue) { + icu->ir[n_IRQ] = 1; + rxicu_request(icu, n_IRQ); + } +} + +static void rxicu_ack_irq(void *opaque, int no, int level) +{ + RXICUState *icu = opaque; + int i; + int n_IRQ; + int max_pri; + + n_IRQ = atomic_read(&icu->req_irq); + if (n_IRQ < 0) { + return; + } + atomic_set(&icu->req_irq, -1); + if (icu->src[n_IRQ].sense != TRG_LEVEL) { + icu->ir[n_IRQ] = 0; + } + + max_pri = 0; + n_IRQ = -1; + for (i = 0; i < NR_IRQS; i++) { + if (icu->ir[i]) { + if (max_pri < icu->ipr[icu->map[i]]) { + n_IRQ = i; + max_pri = icu->ipr[icu->map[i]]; + } + } + } + + if (n_IRQ >= 0) { + rxicu_request(icu, n_IRQ); + } +} + +static uint64_t icu_read(void *opaque, hwaddr addr, unsigned size) +{ + RXICUState *icu = opaque; + int reg = addr & 0xff; + + if ((addr != A_FIR && size != 1) || + (addr == A_FIR && size != 2)) { + qemu_log_mask(LOG_GUEST_ERROR, "rx_icu: Invalid read size 0x%" + HWADDR_PRIX "\n", addr); + return UINT64_MAX; + } + switch (addr) { + case A_IR ... A_IR + 0xff: + return icu->ir[reg] & R_IR_IR_MASK; + case A_DTCER ... A_DTCER + 0xff: + return icu->dtcer[reg] & R_DTCER_DTCE_MASK; + case A_IER ... A_IER + 0x1f: + return icu->ier[reg]; + case A_SWINTR: + return 0; + case A_FIR: + return icu->fir & (R_FIR_FIEN_MASK | R_FIR_FVCT_MASK); + case A_IPR ... A_IPR + 0x8f: + return icu->ipr[reg] & R_IPR_IPR_MASK; + case A_DMRSR: + case A_DMRSR + 4: + case A_DMRSR + 8: + case A_DMRSR + 12: + return icu->dmasr[reg >> 2]; + case A_IRQCR ... A_IRQCR + 0x1f: + return icu->src[64 + reg].sense << R_IRQCR_IRQMD_SHIFT; + case A_NMISR: + case A_NMICLR: + return 0; + case A_NMIER: + return icu->nmier; + case A_NMICR: + return icu->nmicr; + default: + qemu_log_mask(LOG_UNIMP, "rx_icu: Register 0x%" HWADDR_PRIX + " not implemented.\n", addr); + break; + } + return UINT64_MAX; +} + +static void icu_write(void *opaque, hwaddr addr, uint64_t val, unsigned size) +{ + RXICUState *icu = opaque; + int reg = addr & 0xff; + + if ((addr != A_FIR && size != 1) || + (addr == A_FIR && size != 2)) { + qemu_log_mask(LOG_GUEST_ERROR, "rx_icu: Invalid write size at 0x%" + HWADDR_PRIX "\n", addr); + return; + } + switch (addr) { + case A_IR ... A_IR + 0xff: + if (icu->src[reg].sense != TRG_LEVEL && val == 0) { + icu->ir[reg] = 0; + } + break; + case A_DTCER ... A_DTCER + 0xff: + icu->dtcer[reg] = val & R_DTCER_DTCE_MASK; + qemu_log_mask(LOG_UNIMP, + "rx_icu: DTC not implemented\n"); + break; + case A_IER ... A_IER + 0x1f: + icu->ier[reg] = val; + break; + case A_SWINTR: + if (val & R_SWINTR_SWINT_MASK) { + qemu_irq_pulse(icu->_swi); + } + break; + case A_FIR: + icu->fir = val & (R_FIR_FIEN_MASK | R_FIR_FVCT_MASK); + break; + case A_IPR ... A_IPR + 0x8f: + icu->ipr[reg] = val & R_IPR_IPR_MASK; + break; + case A_DMRSR: + case A_DMRSR + 4: + case A_DMRSR + 8: + case A_DMRSR + 12: + icu->dmasr[reg >> 2] = val; + qemu_log_mask(LOG_UNIMP, + "rx_icu: DMAC not implemented\n"); + break; + case A_IRQCR ... A_IRQCR + 0x1f: + icu->src[64 + reg].sense = val >> R_IRQCR_IRQMD_SHIFT; + break; + case A_NMICLR: + break; + case A_NMIER: + icu->nmier |= val & (R_NMIER_NMIEN_MASK | + R_NMIER_LVDEN_MASK | + R_NMIER_OSTEN_MASK); + break; + case A_NMICR: + if ((icu->nmier & R_NMIER_NMIEN_MASK) == 0) { + icu->nmicr = val & R_NMICR_NMIMD_MASK; + } + break; + default: + qemu_log_mask(LOG_UNIMP, "rx_icu: Register 0x%" HWADDR_PRIX + " not implemented\n", addr); + break; + } +} + +static const MemoryRegionOps icu_ops = { + .write = icu_write, + .read = icu_read, + .endianness = DEVICE_LITTLE_ENDIAN, + .impl = { + .max_access_size = 2, + }, +}; + +static void rxicu_realize(DeviceState *dev, Error **errp) +{ + RXICUState *icu = RXICU(dev); + int i, j; + + if (icu->init_sense == NULL) { + qemu_log_mask(LOG_GUEST_ERROR, + "rx_icu: trigger-level property must be set."); + return; + } + for (i = j = 0; i < NR_IRQS; i++) { + if (icu->init_sense[j] == i) { + icu->src[i].sense = TRG_LEVEL; + if (j < icu->nr_sense) { + j++; + } + } else { + icu->src[i].sense = TRG_PEDGE; + } + } + icu->req_irq = -1; +} + +static void rxicu_init(Object *obj) +{ + SysBusDevice *d = SYS_BUS_DEVICE(obj); + RXICUState *icu = RXICU(obj); + + memory_region_init_io(&icu->memory, OBJECT(icu), &icu_ops, + icu, "rx-icu", 0x600); + sysbus_init_mmio(d, &icu->memory); + + qdev_init_gpio_in(DEVICE(d), rxicu_set_irq, NR_IRQS); + qdev_init_gpio_in_named(DEVICE(d), rxicu_ack_irq, "ack", 1); + sysbus_init_irq(d, &icu->_irq); + sysbus_init_irq(d, &icu->_fir); + sysbus_init_irq(d, &icu->_swi); +} + +static void rxicu_fini(Object *obj) +{ + RXICUState *icu = RXICU(obj); + g_free(icu->map); + g_free(icu->init_sense); +} + +static const VMStateDescription vmstate_rxicu = { + .name = "rx-icu", + .version_id = 1, + .minimum_version_id = 1, + .fields = (VMStateField[]) { + VMSTATE_END_OF_LIST() + } +}; + +static Property rxicu_properties[] = { + DEFINE_PROP_ARRAY("ipr-map", RXICUState, nr_irqs, map, + qdev_prop_uint32, uint32_t), + DEFINE_PROP_ARRAY("trigger-level", RXICUState, nr_sense, init_sense, + qdev_prop_uint32, uint32_t), + DEFINE_PROP_END_OF_LIST(), +}; + +static void rxicu_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + + dc->realize = rxicu_realize; + dc->props = rxicu_properties; + dc->vmsd = &vmstate_rxicu; +} + +static const TypeInfo rxicu_info = { + .name = TYPE_RXICU, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(RXICUState), + .instance_init = rxicu_init, + .instance_finalize = rxicu_fini, + .class_init = rxicu_class_init, +}; + +static void rxicu_register_types(void) +{ + type_register_static(&rxicu_info); +} + +type_init(rxicu_register_types) diff --git a/hw/intc/Kconfig b/hw/intc/Kconfig index 5347f8412c..67e9d97464 100644 --- a/hw/intc/Kconfig +++ b/hw/intc/Kconfig @@ -58,3 +58,6 @@ config S390_FLIC_KVM config OMPIC bool + +config RX_ICU + bool diff --git a/hw/intc/Makefile.objs b/hw/intc/Makefile.objs index 03019b9a03..16bdc7e427 100644 --- a/hw/intc/Makefile.objs +++ b/hw/intc/Makefile.objs @@ -49,3 +49,4 @@ obj-$(CONFIG_ARM_GIC) += arm_gicv3_cpuif.o obj-$(CONFIG_MIPS_CPS) += mips_gic.o obj-$(CONFIG_NIOS2) += nios2_iic.o obj-$(CONFIG_OMPIC) += ompic.o +obj-$(CONFIG_RX) += rx_icu.o