diff options
Diffstat (limited to 'hw/xilinx_intc.c')
| -rw-r--r-- | hw/xilinx_intc.c | 190 |
1 files changed, 0 insertions, 190 deletions
diff --git a/hw/xilinx_intc.c b/hw/xilinx_intc.c deleted file mode 100644 index b106e724ab..0000000000 --- a/hw/xilinx_intc.c +++ /dev/null @@ -1,190 +0,0 @@ -/* - * QEMU Xilinx OPB Interrupt Controller. - * - * Copyright (c) 2009 Edgar E. Iglesias. - * - * 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 "hw/sysbus.h" -#include "hw/hw.h" - -#define D(x) - -#define R_ISR 0 -#define R_IPR 1 -#define R_IER 2 -#define R_IAR 3 -#define R_SIE 4 -#define R_CIE 5 -#define R_IVR 6 -#define R_MER 7 -#define R_MAX 8 - -struct xlx_pic -{ - SysBusDevice busdev; - MemoryRegion mmio; - qemu_irq parent_irq; - - /* Configuration reg chosen at synthesis-time. QEMU populates - the bits at board-setup. */ - uint32_t c_kind_of_intr; - - /* Runtime control registers. */ - uint32_t regs[R_MAX]; -}; - -static void update_irq(struct xlx_pic *p) -{ - uint32_t i; - /* Update the pending register. */ - p->regs[R_IPR] = p->regs[R_ISR] & p->regs[R_IER]; - - /* Update the vector register. */ - for (i = 0; i < 32; i++) { - if (p->regs[R_IPR] & (1 << i)) - break; - } - if (i == 32) - i = ~0; - - p->regs[R_IVR] = i; - if ((p->regs[R_MER] & 1) && p->regs[R_IPR]) { - qemu_irq_raise(p->parent_irq); - } else { - qemu_irq_lower(p->parent_irq); - } -} - -static uint64_t -pic_read(void *opaque, hwaddr addr, unsigned int size) -{ - struct xlx_pic *p = opaque; - uint32_t r = 0; - - addr >>= 2; - switch (addr) - { - default: - if (addr < ARRAY_SIZE(p->regs)) - r = p->regs[addr]; - break; - - } - D(printf("%s %x=%x\n", __func__, addr * 4, r)); - return r; -} - -static void -pic_write(void *opaque, hwaddr addr, - uint64_t val64, unsigned int size) -{ - struct xlx_pic *p = opaque; - uint32_t value = val64; - - addr >>= 2; - D(qemu_log("%s addr=%x val=%x\n", __func__, addr * 4, value)); - switch (addr) - { - case R_IAR: - p->regs[R_ISR] &= ~value; /* ACK. */ - break; - case R_SIE: - p->regs[R_IER] |= value; /* Atomic set ie. */ - break; - case R_CIE: - p->regs[R_IER] &= ~value; /* Atomic clear ie. */ - break; - default: - if (addr < ARRAY_SIZE(p->regs)) - p->regs[addr] = value; - break; - } - update_irq(p); -} - -static const MemoryRegionOps pic_ops = { - .read = pic_read, - .write = pic_write, - .endianness = DEVICE_NATIVE_ENDIAN, - .valid = { - .min_access_size = 4, - .max_access_size = 4 - } -}; - -static void irq_handler(void *opaque, int irq, int level) -{ - struct xlx_pic *p = opaque; - - if (!(p->regs[R_MER] & 2)) { - qemu_irq_lower(p->parent_irq); - return; - } - - /* Update source flops. Don't clear unless level triggered. - Edge triggered interrupts only go away when explicitely acked to - the interrupt controller. */ - if (!(p->c_kind_of_intr & (1 << irq)) || level) { - p->regs[R_ISR] &= ~(1 << irq); - p->regs[R_ISR] |= (level << irq); - } - update_irq(p); -} - -static int xilinx_intc_init(SysBusDevice *dev) -{ - struct xlx_pic *p = FROM_SYSBUS(typeof (*p), dev); - - qdev_init_gpio_in(&dev->qdev, irq_handler, 32); - sysbus_init_irq(dev, &p->parent_irq); - - memory_region_init_io(&p->mmio, &pic_ops, p, "xlnx.xps-intc", R_MAX * 4); - sysbus_init_mmio(dev, &p->mmio); - return 0; -} - -static Property xilinx_intc_properties[] = { - DEFINE_PROP_UINT32("kind-of-intr", struct xlx_pic, c_kind_of_intr, 0), - DEFINE_PROP_END_OF_LIST(), -}; - -static void xilinx_intc_class_init(ObjectClass *klass, void *data) -{ - DeviceClass *dc = DEVICE_CLASS(klass); - SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); - - k->init = xilinx_intc_init; - dc->props = xilinx_intc_properties; -} - -static const TypeInfo xilinx_intc_info = { - .name = "xlnx.xps-intc", - .parent = TYPE_SYS_BUS_DEVICE, - .instance_size = sizeof(struct xlx_pic), - .class_init = xilinx_intc_class_init, -}; - -static void xilinx_intc_register_types(void) -{ - type_register_static(&xilinx_intc_info); -} - -type_init(xilinx_intc_register_types) |