| /* |
| * QEMU model of the IPI Inter Processor Interrupt block |
| * |
| * Copyright (c) 2014 Xilinx Inc. |
| * |
| * Written by Edgar E. Iglesias <edgar.iglesias@xilinx.com> |
| * Written by Alistair Francis <alistair.francis@xilinx.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. |
| */ |
| |
| #include "qemu/osdep.h" |
| #include "hw/sysbus.h" |
| #include "migration/vmstate.h" |
| #include "hw/register.h" |
| #include "qemu/bitops.h" |
| #include "qemu/log.h" |
| #include "qemu/module.h" |
| #include "hw/intc/xlnx-zynqmp-ipi.h" |
| #include "hw/irq.h" |
| |
| #ifndef XLNX_ZYNQMP_IPI_ERR_DEBUG |
| #define XLNX_ZYNQMP_IPI_ERR_DEBUG 0 |
| #endif |
| |
| #define DB_PRINT_L(lvl, fmt, args...) do {\ |
| if (XLNX_ZYNQMP_IPI_ERR_DEBUG >= lvl) {\ |
| qemu_log(TYPE_XLNX_ZYNQMP_IPI ": %s:" fmt, __func__, ## args);\ |
| } \ |
| } while (0) |
| |
| #define DB_PRINT(fmt, args...) DB_PRINT_L(1, fmt, ## args) |
| |
| REG32(IPI_TRIG, 0x0) |
| FIELD(IPI_TRIG, PL_3, 27, 1) |
| FIELD(IPI_TRIG, PL_2, 26, 1) |
| FIELD(IPI_TRIG, PL_1, 25, 1) |
| FIELD(IPI_TRIG, PL_0, 24, 1) |
| FIELD(IPI_TRIG, PMU_3, 19, 1) |
| FIELD(IPI_TRIG, PMU_2, 18, 1) |
| FIELD(IPI_TRIG, PMU_1, 17, 1) |
| FIELD(IPI_TRIG, PMU_0, 16, 1) |
| FIELD(IPI_TRIG, RPU_1, 9, 1) |
| FIELD(IPI_TRIG, RPU_0, 8, 1) |
| FIELD(IPI_TRIG, APU, 0, 1) |
| REG32(IPI_OBS, 0x4) |
| FIELD(IPI_OBS, PL_3, 27, 1) |
| FIELD(IPI_OBS, PL_2, 26, 1) |
| FIELD(IPI_OBS, PL_1, 25, 1) |
| FIELD(IPI_OBS, PL_0, 24, 1) |
| FIELD(IPI_OBS, PMU_3, 19, 1) |
| FIELD(IPI_OBS, PMU_2, 18, 1) |
| FIELD(IPI_OBS, PMU_1, 17, 1) |
| FIELD(IPI_OBS, PMU_0, 16, 1) |
| FIELD(IPI_OBS, RPU_1, 9, 1) |
| FIELD(IPI_OBS, RPU_0, 8, 1) |
| FIELD(IPI_OBS, APU, 0, 1) |
| REG32(IPI_ISR, 0x10) |
| FIELD(IPI_ISR, PL_3, 27, 1) |
| FIELD(IPI_ISR, PL_2, 26, 1) |
| FIELD(IPI_ISR, PL_1, 25, 1) |
| FIELD(IPI_ISR, PL_0, 24, 1) |
| FIELD(IPI_ISR, PMU_3, 19, 1) |
| FIELD(IPI_ISR, PMU_2, 18, 1) |
| FIELD(IPI_ISR, PMU_1, 17, 1) |
| FIELD(IPI_ISR, PMU_0, 16, 1) |
| FIELD(IPI_ISR, RPU_1, 9, 1) |
| FIELD(IPI_ISR, RPU_0, 8, 1) |
| FIELD(IPI_ISR, APU, 0, 1) |
| REG32(IPI_IMR, 0x14) |
| FIELD(IPI_IMR, PL_3, 27, 1) |
| FIELD(IPI_IMR, PL_2, 26, 1) |
| FIELD(IPI_IMR, PL_1, 25, 1) |
| FIELD(IPI_IMR, PL_0, 24, 1) |
| FIELD(IPI_IMR, PMU_3, 19, 1) |
| FIELD(IPI_IMR, PMU_2, 18, 1) |
| FIELD(IPI_IMR, PMU_1, 17, 1) |
| FIELD(IPI_IMR, PMU_0, 16, 1) |
| FIELD(IPI_IMR, RPU_1, 9, 1) |
| FIELD(IPI_IMR, RPU_0, 8, 1) |
| FIELD(IPI_IMR, APU, 0, 1) |
| REG32(IPI_IER, 0x18) |
| FIELD(IPI_IER, PL_3, 27, 1) |
| FIELD(IPI_IER, PL_2, 26, 1) |
| FIELD(IPI_IER, PL_1, 25, 1) |
| FIELD(IPI_IER, PL_0, 24, 1) |
| FIELD(IPI_IER, PMU_3, 19, 1) |
| FIELD(IPI_IER, PMU_2, 18, 1) |
| FIELD(IPI_IER, PMU_1, 17, 1) |
| FIELD(IPI_IER, PMU_0, 16, 1) |
| FIELD(IPI_IER, RPU_1, 9, 1) |
| FIELD(IPI_IER, RPU_0, 8, 1) |
| FIELD(IPI_IER, APU, 0, 1) |
| REG32(IPI_IDR, 0x1c) |
| FIELD(IPI_IDR, PL_3, 27, 1) |
| FIELD(IPI_IDR, PL_2, 26, 1) |
| FIELD(IPI_IDR, PL_1, 25, 1) |
| FIELD(IPI_IDR, PL_0, 24, 1) |
| FIELD(IPI_IDR, PMU_3, 19, 1) |
| FIELD(IPI_IDR, PMU_2, 18, 1) |
| FIELD(IPI_IDR, PMU_1, 17, 1) |
| FIELD(IPI_IDR, PMU_0, 16, 1) |
| FIELD(IPI_IDR, RPU_1, 9, 1) |
| FIELD(IPI_IDR, RPU_0, 8, 1) |
| FIELD(IPI_IDR, APU, 0, 1) |
| |
| /* APU |
| * RPU_0 |
| * RPU_1 |
| * PMU_0 |
| * PMU_1 |
| * PMU_2 |
| * PMU_3 |
| * PL_0 |
| * PL_1 |
| * PL_2 |
| * PL_3 |
| */ |
| int index_array[NUM_IPIS] = {0, 8, 9, 16, 17, 18, 19, 24, 25, 26, 27}; |
| static const char *index_array_names[NUM_IPIS] = {"APU", "RPU_0", "RPU_1", |
| "PMU_0", "PMU_1", "PMU_2", |
| "PMU_3", "PL_0", "PL_1", |
| "PL_2", "PL_3"}; |
| |
| static void xlnx_zynqmp_ipi_set_trig(XlnxZynqMPIPI *s, uint32_t val) |
| { |
| int i, ipi_index, ipi_mask; |
| |
| for (i = 0; i < NUM_IPIS; i++) { |
| ipi_index = index_array[i]; |
| ipi_mask = (1 << ipi_index); |
| DB_PRINT("Setting %s=%d\n", index_array_names[i], |
| !!(val & ipi_mask)); |
| qemu_set_irq(s->irq_trig_out[i], !!(val & ipi_mask)); |
| } |
| } |
| |
| static void xlnx_zynqmp_ipi_set_obs(XlnxZynqMPIPI *s, uint32_t val) |
| { |
| int i, ipi_index, ipi_mask; |
| |
| for (i = 0; i < NUM_IPIS; i++) { |
| ipi_index = index_array[i]; |
| ipi_mask = (1 << ipi_index); |
| DB_PRINT("Setting %s=%d\n", index_array_names[i], |
| !!(val & ipi_mask)); |
| qemu_set_irq(s->irq_obs_out[i], !!(val & ipi_mask)); |
| } |
| } |
| |
| static void xlnx_zynqmp_ipi_update_irq(XlnxZynqMPIPI *s) |
| { |
| bool pending = s->regs[R_IPI_ISR] & ~s->regs[R_IPI_IMR]; |
| |
| DB_PRINT("irq=%d isr=%x mask=%x\n", |
| pending, s->regs[R_IPI_ISR], s->regs[R_IPI_IMR]); |
| qemu_set_irq(s->irq, pending); |
| } |
| |
| static uint64_t xlnx_zynqmp_ipi_trig_prew(RegisterInfo *reg, uint64_t val64) |
| { |
| XlnxZynqMPIPI *s = XLNX_ZYNQMP_IPI(reg->opaque); |
| |
| xlnx_zynqmp_ipi_set_trig(s, val64); |
| |
| return val64; |
| } |
| |
| static void xlnx_zynqmp_ipi_trig_postw(RegisterInfo *reg, uint64_t val64) |
| { |
| XlnxZynqMPIPI *s = XLNX_ZYNQMP_IPI(reg->opaque); |
| |
| /* TRIG generates a pulse on the outbound signals. We use the |
| * post-write callback to bring the signal back-down. |
| */ |
| s->regs[R_IPI_TRIG] = 0; |
| |
| xlnx_zynqmp_ipi_set_trig(s, 0); |
| } |
| |
| static uint64_t xlnx_zynqmp_ipi_isr_prew(RegisterInfo *reg, uint64_t val64) |
| { |
| XlnxZynqMPIPI *s = XLNX_ZYNQMP_IPI(reg->opaque); |
| |
| xlnx_zynqmp_ipi_set_obs(s, val64); |
| |
| return val64; |
| } |
| |
| static void xlnx_zynqmp_ipi_isr_postw(RegisterInfo *reg, uint64_t val64) |
| { |
| XlnxZynqMPIPI *s = XLNX_ZYNQMP_IPI(reg->opaque); |
| |
| xlnx_zynqmp_ipi_update_irq(s); |
| } |
| |
| static uint64_t xlnx_zynqmp_ipi_ier_prew(RegisterInfo *reg, uint64_t val64) |
| { |
| XlnxZynqMPIPI *s = XLNX_ZYNQMP_IPI(reg->opaque); |
| uint32_t val = val64; |
| |
| s->regs[R_IPI_IMR] &= ~val; |
| xlnx_zynqmp_ipi_update_irq(s); |
| return 0; |
| } |
| |
| static uint64_t xlnx_zynqmp_ipi_idr_prew(RegisterInfo *reg, uint64_t val64) |
| { |
| XlnxZynqMPIPI *s = XLNX_ZYNQMP_IPI(reg->opaque); |
| uint32_t val = val64; |
| |
| s->regs[R_IPI_IMR] |= val; |
| xlnx_zynqmp_ipi_update_irq(s); |
| return 0; |
| } |
| |
| static const RegisterAccessInfo xlnx_zynqmp_ipi_regs_info[] = { |
| { .name = "IPI_TRIG", .addr = A_IPI_TRIG, |
| .rsvd = 0xf0f0fcfe, |
| .ro = 0xf0f0fcfe, |
| .pre_write = xlnx_zynqmp_ipi_trig_prew, |
| .post_write = xlnx_zynqmp_ipi_trig_postw, |
| },{ .name = "IPI_OBS", .addr = A_IPI_OBS, |
| .rsvd = 0xf0f0fcfe, |
| .ro = 0xffffffff, |
| },{ .name = "IPI_ISR", .addr = A_IPI_ISR, |
| .rsvd = 0xf0f0fcfe, |
| .ro = 0xf0f0fcfe, |
| .w1c = 0xf0f0301, |
| .pre_write = xlnx_zynqmp_ipi_isr_prew, |
| .post_write = xlnx_zynqmp_ipi_isr_postw, |
| },{ .name = "IPI_IMR", .addr = A_IPI_IMR, |
| .reset = 0xf0f0301, |
| .rsvd = 0xf0f0fcfe, |
| .ro = 0xffffffff, |
| },{ .name = "IPI_IER", .addr = A_IPI_IER, |
| .rsvd = 0xf0f0fcfe, |
| .ro = 0xf0f0fcfe, |
| .pre_write = xlnx_zynqmp_ipi_ier_prew, |
| },{ .name = "IPI_IDR", .addr = A_IPI_IDR, |
| .rsvd = 0xf0f0fcfe, |
| .ro = 0xf0f0fcfe, |
| .pre_write = xlnx_zynqmp_ipi_idr_prew, |
| } |
| }; |
| |
| static void xlnx_zynqmp_ipi_reset(DeviceState *dev) |
| { |
| XlnxZynqMPIPI *s = XLNX_ZYNQMP_IPI(dev); |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(s->regs_info); ++i) { |
| register_reset(&s->regs_info[i]); |
| } |
| |
| xlnx_zynqmp_ipi_update_irq(s); |
| } |
| |
| static void xlnx_zynqmp_ipi_handler(void *opaque, int n, int level) |
| { |
| XlnxZynqMPIPI *s = XLNX_ZYNQMP_IPI(opaque); |
| uint32_t val = (!!level) << n; |
| |
| DB_PRINT("IPI input irq[%d]=%d\n", n, level); |
| |
| s->regs[R_IPI_ISR] |= val; |
| xlnx_zynqmp_ipi_set_obs(s, s->regs[R_IPI_ISR]); |
| xlnx_zynqmp_ipi_update_irq(s); |
| } |
| |
| static void xlnx_zynqmp_obs_handler(void *opaque, int n, int level) |
| { |
| XlnxZynqMPIPI *s = XLNX_ZYNQMP_IPI(opaque); |
| |
| DB_PRINT("OBS input irq[%d]=%d\n", n, level); |
| |
| s->regs[R_IPI_OBS] &= ~(1ULL << n); |
| s->regs[R_IPI_OBS] |= (level << n); |
| } |
| |
| static const MemoryRegionOps xlnx_zynqmp_ipi_ops = { |
| .read = register_read_memory, |
| .write = register_write_memory, |
| .endianness = DEVICE_LITTLE_ENDIAN, |
| .valid = { |
| .min_access_size = 4, |
| .max_access_size = 4, |
| }, |
| }; |
| |
| static void xlnx_zynqmp_ipi_realize(DeviceState *dev, Error **errp) |
| { |
| qdev_init_gpio_in_named(dev, xlnx_zynqmp_ipi_handler, "IPI_INPUTS", 32); |
| qdev_init_gpio_in_named(dev, xlnx_zynqmp_obs_handler, "OBS_INPUTS", 32); |
| } |
| |
| static void xlnx_zynqmp_ipi_init(Object *obj) |
| { |
| XlnxZynqMPIPI *s = XLNX_ZYNQMP_IPI(obj); |
| DeviceState *dev = DEVICE(obj); |
| SysBusDevice *sbd = SYS_BUS_DEVICE(obj); |
| RegisterInfoArray *reg_array; |
| char *irq_name; |
| int i; |
| |
| memory_region_init(&s->iomem, obj, TYPE_XLNX_ZYNQMP_IPI, |
| R_XLNX_ZYNQMP_IPI_MAX * 4); |
| reg_array = |
| register_init_block32(DEVICE(obj), xlnx_zynqmp_ipi_regs_info, |
| ARRAY_SIZE(xlnx_zynqmp_ipi_regs_info), |
| s->regs_info, s->regs, |
| &xlnx_zynqmp_ipi_ops, |
| XLNX_ZYNQMP_IPI_ERR_DEBUG, |
| R_XLNX_ZYNQMP_IPI_MAX * 4); |
| memory_region_add_subregion(&s->iomem, |
| 0x0, |
| ®_array->mem); |
| sysbus_init_mmio(sbd, &s->iomem); |
| sysbus_init_irq(sbd, &s->irq); |
| |
| for (i = 0; i < NUM_IPIS; i++) { |
| qdev_init_gpio_out_named(dev, &s->irq_trig_out[i], |
| index_array_names[i], 1); |
| |
| irq_name = g_strdup_printf("OBS_%s", index_array_names[i]); |
| qdev_init_gpio_out_named(dev, &s->irq_obs_out[i], |
| irq_name, 1); |
| g_free(irq_name); |
| } |
| } |
| |
| static const VMStateDescription vmstate_zynqmp_pmu_ipi = { |
| .name = TYPE_XLNX_ZYNQMP_IPI, |
| .version_id = 1, |
| .minimum_version_id = 1, |
| .fields = (const VMStateField[]) { |
| VMSTATE_UINT32_ARRAY(regs, XlnxZynqMPIPI, R_XLNX_ZYNQMP_IPI_MAX), |
| VMSTATE_END_OF_LIST(), |
| } |
| }; |
| |
| static void xlnx_zynqmp_ipi_class_init(ObjectClass *klass, void *data) |
| { |
| DeviceClass *dc = DEVICE_CLASS(klass); |
| |
| device_class_set_legacy_reset(dc, xlnx_zynqmp_ipi_reset); |
| dc->realize = xlnx_zynqmp_ipi_realize; |
| dc->vmsd = &vmstate_zynqmp_pmu_ipi; |
| } |
| |
| static const TypeInfo xlnx_zynqmp_ipi_info = { |
| .name = TYPE_XLNX_ZYNQMP_IPI, |
| .parent = TYPE_SYS_BUS_DEVICE, |
| .instance_size = sizeof(XlnxZynqMPIPI), |
| .class_init = xlnx_zynqmp_ipi_class_init, |
| .instance_init = xlnx_zynqmp_ipi_init, |
| }; |
| |
| static void xlnx_zynqmp_ipi_register_types(void) |
| { |
| type_register_static(&xlnx_zynqmp_ipi_info); |
| } |
| |
| type_init(xlnx_zynqmp_ipi_register_types) |
