diff options
Diffstat (limited to 'qemu/hw/arm/pxa2xx_gpio.c')
| -rw-r--r-- | qemu/hw/arm/pxa2xx_gpio.c | 357 |
1 files changed, 0 insertions, 357 deletions
diff --git a/qemu/hw/arm/pxa2xx_gpio.c b/qemu/hw/arm/pxa2xx_gpio.c deleted file mode 100644 index 67e7e7094..000000000 --- a/qemu/hw/arm/pxa2xx_gpio.c +++ /dev/null @@ -1,357 +0,0 @@ -/* - * Intel XScale PXA255/270 GPIO controller emulation. - * - * Copyright (c) 2006 Openedhand Ltd. - * Written by Andrzej Zaborowski <balrog@zabor.org> - * - * This code is licensed under the GPL. - */ - -#include "qemu/osdep.h" -#include "hw/hw.h" -#include "hw/sysbus.h" -#include "hw/arm/pxa.h" - -#define PXA2XX_GPIO_BANKS 4 - -#define TYPE_PXA2XX_GPIO "pxa2xx-gpio" -#define PXA2XX_GPIO(obj) \ - OBJECT_CHECK(PXA2xxGPIOInfo, (obj), TYPE_PXA2XX_GPIO) - -typedef struct PXA2xxGPIOInfo PXA2xxGPIOInfo; -struct PXA2xxGPIOInfo { - /*< private >*/ - SysBusDevice parent_obj; - /*< public >*/ - - MemoryRegion iomem; - qemu_irq irq0, irq1, irqX; - int lines; - int ncpu; - ARMCPU *cpu; - - /* XXX: GNU C vectors are more suitable */ - uint32_t ilevel[PXA2XX_GPIO_BANKS]; - uint32_t olevel[PXA2XX_GPIO_BANKS]; - uint32_t dir[PXA2XX_GPIO_BANKS]; - uint32_t rising[PXA2XX_GPIO_BANKS]; - uint32_t falling[PXA2XX_GPIO_BANKS]; - uint32_t status[PXA2XX_GPIO_BANKS]; - uint32_t gafr[PXA2XX_GPIO_BANKS * 2]; - - uint32_t prev_level[PXA2XX_GPIO_BANKS]; - qemu_irq handler[PXA2XX_GPIO_BANKS * 32]; - qemu_irq read_notify; -}; - -static struct { - enum { - GPIO_NONE, - GPLR, - GPSR, - GPCR, - GPDR, - GRER, - GFER, - GEDR, - GAFR_L, - GAFR_U, - } reg; - int bank; -} pxa2xx_gpio_regs[0x200] = { - [0 ... 0x1ff] = { GPIO_NONE, 0 }, -#define PXA2XX_REG(reg, a0, a1, a2, a3) \ - [a0] = { reg, 0 }, [a1] = { reg, 1 }, [a2] = { reg, 2 }, [a3] = { reg, 3 }, - - PXA2XX_REG(GPLR, 0x000, 0x004, 0x008, 0x100) - PXA2XX_REG(GPSR, 0x018, 0x01c, 0x020, 0x118) - PXA2XX_REG(GPCR, 0x024, 0x028, 0x02c, 0x124) - PXA2XX_REG(GPDR, 0x00c, 0x010, 0x014, 0x10c) - PXA2XX_REG(GRER, 0x030, 0x034, 0x038, 0x130) - PXA2XX_REG(GFER, 0x03c, 0x040, 0x044, 0x13c) - PXA2XX_REG(GEDR, 0x048, 0x04c, 0x050, 0x148) - PXA2XX_REG(GAFR_L, 0x054, 0x05c, 0x064, 0x06c) - PXA2XX_REG(GAFR_U, 0x058, 0x060, 0x068, 0x070) -}; - -static void pxa2xx_gpio_irq_update(PXA2xxGPIOInfo *s) -{ - if (s->status[0] & (1 << 0)) - qemu_irq_raise(s->irq0); - else - qemu_irq_lower(s->irq0); - - if (s->status[0] & (1 << 1)) - qemu_irq_raise(s->irq1); - else - qemu_irq_lower(s->irq1); - - if ((s->status[0] & ~3) | s->status[1] | s->status[2] | s->status[3]) - qemu_irq_raise(s->irqX); - else - qemu_irq_lower(s->irqX); -} - -/* Bitmap of pins used as standby and sleep wake-up sources. */ -static const int pxa2xx_gpio_wake[PXA2XX_GPIO_BANKS] = { - 0x8003fe1b, 0x002001fc, 0xec080000, 0x0012007f, -}; - -static void pxa2xx_gpio_set(void *opaque, int line, int level) -{ - PXA2xxGPIOInfo *s = (PXA2xxGPIOInfo *) opaque; - CPUState *cpu = CPU(s->cpu); - int bank; - uint32_t mask; - - if (line >= s->lines) { - printf("%s: No GPIO pin %i\n", __FUNCTION__, line); - return; - } - - bank = line >> 5; - mask = 1U << (line & 31); - - if (level) { - s->status[bank] |= s->rising[bank] & mask & - ~s->ilevel[bank] & ~s->dir[bank]; - s->ilevel[bank] |= mask; - } else { - s->status[bank] |= s->falling[bank] & mask & - s->ilevel[bank] & ~s->dir[bank]; - s->ilevel[bank] &= ~mask; - } - - if (s->status[bank] & mask) - pxa2xx_gpio_irq_update(s); - - /* Wake-up GPIOs */ - if (cpu->halted && (mask & ~s->dir[bank] & pxa2xx_gpio_wake[bank])) { - cpu_interrupt(cpu, CPU_INTERRUPT_EXITTB); - } -} - -static void pxa2xx_gpio_handler_update(PXA2xxGPIOInfo *s) { - uint32_t level, diff; - int i, bit, line; - for (i = 0; i < PXA2XX_GPIO_BANKS; i ++) { - level = s->olevel[i] & s->dir[i]; - - for (diff = s->prev_level[i] ^ level; diff; diff ^= 1 << bit) { - bit = ctz32(diff); - line = bit + 32 * i; - qemu_set_irq(s->handler[line], (level >> bit) & 1); - } - - s->prev_level[i] = level; - } -} - -static uint64_t pxa2xx_gpio_read(void *opaque, hwaddr offset, - unsigned size) -{ - PXA2xxGPIOInfo *s = (PXA2xxGPIOInfo *) opaque; - uint32_t ret; - int bank; - if (offset >= 0x200) - return 0; - - bank = pxa2xx_gpio_regs[offset].bank; - switch (pxa2xx_gpio_regs[offset].reg) { - case GPDR: /* GPIO Pin-Direction registers */ - return s->dir[bank]; - - case GPSR: /* GPIO Pin-Output Set registers */ - qemu_log_mask(LOG_GUEST_ERROR, - "pxa2xx GPIO: read from write only register GPSR\n"); - return 0; - - case GPCR: /* GPIO Pin-Output Clear registers */ - qemu_log_mask(LOG_GUEST_ERROR, - "pxa2xx GPIO: read from write only register GPCR\n"); - return 0; - - case GRER: /* GPIO Rising-Edge Detect Enable registers */ - return s->rising[bank]; - - case GFER: /* GPIO Falling-Edge Detect Enable registers */ - return s->falling[bank]; - - case GAFR_L: /* GPIO Alternate Function registers */ - return s->gafr[bank * 2]; - - case GAFR_U: /* GPIO Alternate Function registers */ - return s->gafr[bank * 2 + 1]; - - case GPLR: /* GPIO Pin-Level registers */ - ret = (s->olevel[bank] & s->dir[bank]) | - (s->ilevel[bank] & ~s->dir[bank]); - qemu_irq_raise(s->read_notify); - return ret; - - case GEDR: /* GPIO Edge Detect Status registers */ - return s->status[bank]; - - default: - hw_error("%s: Bad offset " REG_FMT "\n", __FUNCTION__, offset); - } - - return 0; -} - -static void pxa2xx_gpio_write(void *opaque, hwaddr offset, - uint64_t value, unsigned size) -{ - PXA2xxGPIOInfo *s = (PXA2xxGPIOInfo *) opaque; - int bank; - if (offset >= 0x200) - return; - - bank = pxa2xx_gpio_regs[offset].bank; - switch (pxa2xx_gpio_regs[offset].reg) { - case GPDR: /* GPIO Pin-Direction registers */ - s->dir[bank] = value; - pxa2xx_gpio_handler_update(s); - break; - - case GPSR: /* GPIO Pin-Output Set registers */ - s->olevel[bank] |= value; - pxa2xx_gpio_handler_update(s); - break; - - case GPCR: /* GPIO Pin-Output Clear registers */ - s->olevel[bank] &= ~value; - pxa2xx_gpio_handler_update(s); - break; - - case GRER: /* GPIO Rising-Edge Detect Enable registers */ - s->rising[bank] = value; - break; - - case GFER: /* GPIO Falling-Edge Detect Enable registers */ - s->falling[bank] = value; - break; - - case GAFR_L: /* GPIO Alternate Function registers */ - s->gafr[bank * 2] = value; - break; - - case GAFR_U: /* GPIO Alternate Function registers */ - s->gafr[bank * 2 + 1] = value; - break; - - case GEDR: /* GPIO Edge Detect Status registers */ - s->status[bank] &= ~value; - pxa2xx_gpio_irq_update(s); - break; - - default: - hw_error("%s: Bad offset " REG_FMT "\n", __FUNCTION__, offset); - } -} - -static const MemoryRegionOps pxa_gpio_ops = { - .read = pxa2xx_gpio_read, - .write = pxa2xx_gpio_write, - .endianness = DEVICE_NATIVE_ENDIAN, -}; - -DeviceState *pxa2xx_gpio_init(hwaddr base, - ARMCPU *cpu, DeviceState *pic, int lines) -{ - CPUState *cs = CPU(cpu); - DeviceState *dev; - - dev = qdev_create(NULL, TYPE_PXA2XX_GPIO); - qdev_prop_set_int32(dev, "lines", lines); - qdev_prop_set_int32(dev, "ncpu", cs->cpu_index); - qdev_init_nofail(dev); - - sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, base); - sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, - qdev_get_gpio_in(pic, PXA2XX_PIC_GPIO_0)); - sysbus_connect_irq(SYS_BUS_DEVICE(dev), 1, - qdev_get_gpio_in(pic, PXA2XX_PIC_GPIO_1)); - sysbus_connect_irq(SYS_BUS_DEVICE(dev), 2, - qdev_get_gpio_in(pic, PXA2XX_PIC_GPIO_X)); - - return dev; -} - -static int pxa2xx_gpio_initfn(SysBusDevice *sbd) -{ - DeviceState *dev = DEVICE(sbd); - PXA2xxGPIOInfo *s = PXA2XX_GPIO(dev); - - s->cpu = ARM_CPU(qemu_get_cpu(s->ncpu)); - - qdev_init_gpio_in(dev, pxa2xx_gpio_set, s->lines); - qdev_init_gpio_out(dev, s->handler, s->lines); - - memory_region_init_io(&s->iomem, OBJECT(s), &pxa_gpio_ops, s, "pxa2xx-gpio", 0x1000); - sysbus_init_mmio(sbd, &s->iomem); - sysbus_init_irq(sbd, &s->irq0); - sysbus_init_irq(sbd, &s->irq1); - sysbus_init_irq(sbd, &s->irqX); - - return 0; -} - -/* - * Registers a callback to notify on GPLR reads. This normally - * shouldn't be needed but it is used for the hack on Spitz machines. - */ -void pxa2xx_gpio_read_notifier(DeviceState *dev, qemu_irq handler) -{ - PXA2xxGPIOInfo *s = PXA2XX_GPIO(dev); - - s->read_notify = handler; -} - -static const VMStateDescription vmstate_pxa2xx_gpio_regs = { - .name = "pxa2xx-gpio", - .version_id = 1, - .minimum_version_id = 1, - .fields = (VMStateField[]) { - VMSTATE_UINT32_ARRAY(ilevel, PXA2xxGPIOInfo, PXA2XX_GPIO_BANKS), - VMSTATE_UINT32_ARRAY(olevel, PXA2xxGPIOInfo, PXA2XX_GPIO_BANKS), - VMSTATE_UINT32_ARRAY(dir, PXA2xxGPIOInfo, PXA2XX_GPIO_BANKS), - VMSTATE_UINT32_ARRAY(rising, PXA2xxGPIOInfo, PXA2XX_GPIO_BANKS), - VMSTATE_UINT32_ARRAY(falling, PXA2xxGPIOInfo, PXA2XX_GPIO_BANKS), - VMSTATE_UINT32_ARRAY(status, PXA2xxGPIOInfo, PXA2XX_GPIO_BANKS), - VMSTATE_UINT32_ARRAY(gafr, PXA2xxGPIOInfo, PXA2XX_GPIO_BANKS * 2), - VMSTATE_UINT32_ARRAY(prev_level, PXA2xxGPIOInfo, PXA2XX_GPIO_BANKS), - VMSTATE_END_OF_LIST(), - }, -}; - -static Property pxa2xx_gpio_properties[] = { - DEFINE_PROP_INT32("lines", PXA2xxGPIOInfo, lines, 0), - DEFINE_PROP_INT32("ncpu", PXA2xxGPIOInfo, ncpu, 0), - DEFINE_PROP_END_OF_LIST(), -}; - -static void pxa2xx_gpio_class_init(ObjectClass *klass, void *data) -{ - DeviceClass *dc = DEVICE_CLASS(klass); - SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); - - k->init = pxa2xx_gpio_initfn; - dc->desc = "PXA2xx GPIO controller"; - dc->props = pxa2xx_gpio_properties; - dc->vmsd = &vmstate_pxa2xx_gpio_regs; -} - -static const TypeInfo pxa2xx_gpio_info = { - .name = TYPE_PXA2XX_GPIO, - .parent = TYPE_SYS_BUS_DEVICE, - .instance_size = sizeof(PXA2xxGPIOInfo), - .class_init = pxa2xx_gpio_class_init, -}; - -static void pxa2xx_gpio_register_types(void) -{ - type_register_static(&pxa2xx_gpio_info); -} - -type_init(pxa2xx_gpio_register_types) |