diff options
Diffstat (limited to 'hw/misc/slavio_misc.c')
-rw-r--r-- | hw/misc/slavio_misc.c | 508 |
1 files changed, 508 insertions, 0 deletions
diff --git a/hw/misc/slavio_misc.c b/hw/misc/slavio_misc.c new file mode 100644 index 0000000..a7a9368 --- /dev/null +++ b/hw/misc/slavio_misc.c @@ -0,0 +1,508 @@ +/* + * QEMU Sparc SLAVIO aux io port emulation + * + * Copyright (c) 2005 Fabrice Bellard + * + * 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 "sysemu/sysemu.h" +#include "hw/sysbus.h" +#include "trace.h" + +/* + * This is the auxio port, chip control and system control part of + * chip STP2001 (Slave I/O), also produced as NCR89C105. See + * http://www.ibiblio.org/pub/historic-linux/early-ports/Sparc/NCR/NCR89C105.txt + * + * This also includes the PMC CPU idle controller. + */ + +typedef struct MiscState { + SysBusDevice busdev; + MemoryRegion cfg_iomem; + MemoryRegion diag_iomem; + MemoryRegion mdm_iomem; + MemoryRegion led_iomem; + MemoryRegion sysctrl_iomem; + MemoryRegion aux1_iomem; + MemoryRegion aux2_iomem; + qemu_irq irq; + qemu_irq fdc_tc; + uint32_t dummy; + uint8_t config; + uint8_t aux1, aux2; + uint8_t diag, mctrl; + uint8_t sysctrl; + uint16_t leds; +} MiscState; + +typedef struct APCState { + SysBusDevice busdev; + MemoryRegion iomem; + qemu_irq cpu_halt; +} APCState; + +#define MISC_SIZE 1 +#define SYSCTRL_SIZE 4 + +#define AUX1_TC 0x02 + +#define AUX2_PWROFF 0x01 +#define AUX2_PWRINTCLR 0x02 +#define AUX2_PWRFAIL 0x20 + +#define CFG_PWRINTEN 0x08 + +#define SYS_RESET 0x01 +#define SYS_RESETSTAT 0x02 + +static void slavio_misc_update_irq(void *opaque) +{ + MiscState *s = opaque; + + if ((s->aux2 & AUX2_PWRFAIL) && (s->config & CFG_PWRINTEN)) { + trace_slavio_misc_update_irq_raise(); + qemu_irq_raise(s->irq); + } else { + trace_slavio_misc_update_irq_lower(); + qemu_irq_lower(s->irq); + } +} + +static void slavio_misc_reset(DeviceState *d) +{ + MiscState *s = container_of(d, MiscState, busdev.qdev); + + // Diagnostic and system control registers not cleared in reset + s->config = s->aux1 = s->aux2 = s->mctrl = 0; +} + +static void slavio_set_power_fail(void *opaque, int irq, int power_failing) +{ + MiscState *s = opaque; + + trace_slavio_set_power_fail(power_failing, s->config); + if (power_failing && (s->config & CFG_PWRINTEN)) { + s->aux2 |= AUX2_PWRFAIL; + } else { + s->aux2 &= ~AUX2_PWRFAIL; + } + slavio_misc_update_irq(s); +} + +static void slavio_cfg_mem_writeb(void *opaque, hwaddr addr, + uint64_t val, unsigned size) +{ + MiscState *s = opaque; + + trace_slavio_cfg_mem_writeb(val & 0xff); + s->config = val & 0xff; + slavio_misc_update_irq(s); +} + +static uint64_t slavio_cfg_mem_readb(void *opaque, hwaddr addr, + unsigned size) +{ + MiscState *s = opaque; + uint32_t ret = 0; + + ret = s->config; + trace_slavio_cfg_mem_readb(ret); + return ret; +} + +static const MemoryRegionOps slavio_cfg_mem_ops = { + .read = slavio_cfg_mem_readb, + .write = slavio_cfg_mem_writeb, + .endianness = DEVICE_NATIVE_ENDIAN, + .valid = { + .min_access_size = 1, + .max_access_size = 1, + }, +}; + +static void slavio_diag_mem_writeb(void *opaque, hwaddr addr, + uint64_t val, unsigned size) +{ + MiscState *s = opaque; + + trace_slavio_diag_mem_writeb(val & 0xff); + s->diag = val & 0xff; +} + +static uint64_t slavio_diag_mem_readb(void *opaque, hwaddr addr, + unsigned size) +{ + MiscState *s = opaque; + uint32_t ret = 0; + + ret = s->diag; + trace_slavio_diag_mem_readb(ret); + return ret; +} + +static const MemoryRegionOps slavio_diag_mem_ops = { + .read = slavio_diag_mem_readb, + .write = slavio_diag_mem_writeb, + .endianness = DEVICE_NATIVE_ENDIAN, + .valid = { + .min_access_size = 1, + .max_access_size = 1, + }, +}; + +static void slavio_mdm_mem_writeb(void *opaque, hwaddr addr, + uint64_t val, unsigned size) +{ + MiscState *s = opaque; + + trace_slavio_mdm_mem_writeb(val & 0xff); + s->mctrl = val & 0xff; +} + +static uint64_t slavio_mdm_mem_readb(void *opaque, hwaddr addr, + unsigned size) +{ + MiscState *s = opaque; + uint32_t ret = 0; + + ret = s->mctrl; + trace_slavio_mdm_mem_readb(ret); + return ret; +} + +static const MemoryRegionOps slavio_mdm_mem_ops = { + .read = slavio_mdm_mem_readb, + .write = slavio_mdm_mem_writeb, + .endianness = DEVICE_NATIVE_ENDIAN, + .valid = { + .min_access_size = 1, + .max_access_size = 1, + }, +}; + +static void slavio_aux1_mem_writeb(void *opaque, hwaddr addr, + uint64_t val, unsigned size) +{ + MiscState *s = opaque; + + trace_slavio_aux1_mem_writeb(val & 0xff); + if (val & AUX1_TC) { + // Send a pulse to floppy terminal count line + if (s->fdc_tc) { + qemu_irq_raise(s->fdc_tc); + qemu_irq_lower(s->fdc_tc); + } + val &= ~AUX1_TC; + } + s->aux1 = val & 0xff; +} + +static uint64_t slavio_aux1_mem_readb(void *opaque, hwaddr addr, + unsigned size) +{ + MiscState *s = opaque; + uint32_t ret = 0; + + ret = s->aux1; + trace_slavio_aux1_mem_readb(ret); + return ret; +} + +static const MemoryRegionOps slavio_aux1_mem_ops = { + .read = slavio_aux1_mem_readb, + .write = slavio_aux1_mem_writeb, + .endianness = DEVICE_NATIVE_ENDIAN, + .valid = { + .min_access_size = 1, + .max_access_size = 1, + }, +}; + +static void slavio_aux2_mem_writeb(void *opaque, hwaddr addr, + uint64_t val, unsigned size) +{ + MiscState *s = opaque; + + val &= AUX2_PWRINTCLR | AUX2_PWROFF; + trace_slavio_aux2_mem_writeb(val & 0xff); + val |= s->aux2 & AUX2_PWRFAIL; + if (val & AUX2_PWRINTCLR) // Clear Power Fail int + val &= AUX2_PWROFF; + s->aux2 = val; + if (val & AUX2_PWROFF) + qemu_system_shutdown_request(); + slavio_misc_update_irq(s); +} + +static uint64_t slavio_aux2_mem_readb(void *opaque, hwaddr addr, + unsigned size) +{ + MiscState *s = opaque; + uint32_t ret = 0; + + ret = s->aux2; + trace_slavio_aux2_mem_readb(ret); + return ret; +} + +static const MemoryRegionOps slavio_aux2_mem_ops = { + .read = slavio_aux2_mem_readb, + .write = slavio_aux2_mem_writeb, + .endianness = DEVICE_NATIVE_ENDIAN, + .valid = { + .min_access_size = 1, + .max_access_size = 1, + }, +}; + +static void apc_mem_writeb(void *opaque, hwaddr addr, + uint64_t val, unsigned size) +{ + APCState *s = opaque; + + trace_apc_mem_writeb(val & 0xff); + qemu_irq_raise(s->cpu_halt); +} + +static uint64_t apc_mem_readb(void *opaque, hwaddr addr, + unsigned size) +{ + uint32_t ret = 0; + + trace_apc_mem_readb(ret); + return ret; +} + +static const MemoryRegionOps apc_mem_ops = { + .read = apc_mem_readb, + .write = apc_mem_writeb, + .endianness = DEVICE_NATIVE_ENDIAN, + .valid = { + .min_access_size = 1, + .max_access_size = 1, + } +}; + +static uint64_t slavio_sysctrl_mem_readl(void *opaque, hwaddr addr, + unsigned size) +{ + MiscState *s = opaque; + uint32_t ret = 0; + + switch (addr) { + case 0: + ret = s->sysctrl; + break; + default: + break; + } + trace_slavio_sysctrl_mem_readl(ret); + return ret; +} + +static void slavio_sysctrl_mem_writel(void *opaque, hwaddr addr, + uint64_t val, unsigned size) +{ + MiscState *s = opaque; + + trace_slavio_sysctrl_mem_writel(val); + switch (addr) { + case 0: + if (val & SYS_RESET) { + s->sysctrl = SYS_RESETSTAT; + qemu_system_reset_request(); + } + break; + default: + break; + } +} + +static const MemoryRegionOps slavio_sysctrl_mem_ops = { + .read = slavio_sysctrl_mem_readl, + .write = slavio_sysctrl_mem_writel, + .endianness = DEVICE_NATIVE_ENDIAN, + .valid = { + .min_access_size = 4, + .max_access_size = 4, + }, +}; + +static uint64_t slavio_led_mem_readw(void *opaque, hwaddr addr, + unsigned size) +{ + MiscState *s = opaque; + uint32_t ret = 0; + + switch (addr) { + case 0: + ret = s->leds; + break; + default: + break; + } + trace_slavio_led_mem_readw(ret); + return ret; +} + +static void slavio_led_mem_writew(void *opaque, hwaddr addr, + uint64_t val, unsigned size) +{ + MiscState *s = opaque; + + trace_slavio_led_mem_readw(val & 0xffff); + switch (addr) { + case 0: + s->leds = val; + break; + default: + break; + } +} + +static const MemoryRegionOps slavio_led_mem_ops = { + .read = slavio_led_mem_readw, + .write = slavio_led_mem_writew, + .endianness = DEVICE_NATIVE_ENDIAN, + .valid = { + .min_access_size = 2, + .max_access_size = 2, + }, +}; + +static const VMStateDescription vmstate_misc = { + .name ="slavio_misc", + .version_id = 1, + .minimum_version_id = 1, + .minimum_version_id_old = 1, + .fields = (VMStateField []) { + VMSTATE_UINT32(dummy, MiscState), + VMSTATE_UINT8(config, MiscState), + VMSTATE_UINT8(aux1, MiscState), + VMSTATE_UINT8(aux2, MiscState), + VMSTATE_UINT8(diag, MiscState), + VMSTATE_UINT8(mctrl, MiscState), + VMSTATE_UINT8(sysctrl, MiscState), + VMSTATE_END_OF_LIST() + } +}; + +static int apc_init1(SysBusDevice *dev) +{ + APCState *s = FROM_SYSBUS(APCState, dev); + + sysbus_init_irq(dev, &s->cpu_halt); + + /* Power management (APC) XXX: not a Slavio device */ + memory_region_init_io(&s->iomem, &apc_mem_ops, s, + "apc", MISC_SIZE); + sysbus_init_mmio(dev, &s->iomem); + return 0; +} + +static int slavio_misc_init1(SysBusDevice *dev) +{ + MiscState *s = FROM_SYSBUS(MiscState, dev); + + sysbus_init_irq(dev, &s->irq); + sysbus_init_irq(dev, &s->fdc_tc); + + /* 8 bit registers */ + /* Slavio control */ + memory_region_init_io(&s->cfg_iomem, &slavio_cfg_mem_ops, s, + "configuration", MISC_SIZE); + sysbus_init_mmio(dev, &s->cfg_iomem); + + /* Diagnostics */ + memory_region_init_io(&s->diag_iomem, &slavio_diag_mem_ops, s, + "diagnostic", MISC_SIZE); + sysbus_init_mmio(dev, &s->diag_iomem); + + /* Modem control */ + memory_region_init_io(&s->mdm_iomem, &slavio_mdm_mem_ops, s, + "modem", MISC_SIZE); + sysbus_init_mmio(dev, &s->mdm_iomem); + + /* 16 bit registers */ + /* ss600mp diag LEDs */ + memory_region_init_io(&s->led_iomem, &slavio_led_mem_ops, s, + "leds", MISC_SIZE); + sysbus_init_mmio(dev, &s->led_iomem); + + /* 32 bit registers */ + /* System control */ + memory_region_init_io(&s->sysctrl_iomem, &slavio_sysctrl_mem_ops, s, + "system-control", MISC_SIZE); + sysbus_init_mmio(dev, &s->sysctrl_iomem); + + /* AUX 1 (Misc System Functions) */ + memory_region_init_io(&s->aux1_iomem, &slavio_aux1_mem_ops, s, + "misc-system-functions", MISC_SIZE); + sysbus_init_mmio(dev, &s->aux1_iomem); + + /* AUX 2 (Software Powerdown Control) */ + memory_region_init_io(&s->aux2_iomem, &slavio_aux2_mem_ops, s, + "software-powerdown-control", MISC_SIZE); + sysbus_init_mmio(dev, &s->aux2_iomem); + + qdev_init_gpio_in(&dev->qdev, slavio_set_power_fail, 1); + + return 0; +} + +static void slavio_misc_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); + + k->init = slavio_misc_init1; + dc->reset = slavio_misc_reset; + dc->vmsd = &vmstate_misc; +} + +static const TypeInfo slavio_misc_info = { + .name = "slavio_misc", + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(MiscState), + .class_init = slavio_misc_class_init, +}; + +static void apc_class_init(ObjectClass *klass, void *data) +{ + SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); + + k->init = apc_init1; +} + +static const TypeInfo apc_info = { + .name = "apc", + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(MiscState), + .class_init = apc_class_init, +}; + +static void slavio_misc_register_types(void) +{ + type_register_static(&slavio_misc_info); + type_register_static(&apc_info); +} + +type_init(slavio_misc_register_types) |