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* PXA270-based Intel Mainstone platforms.
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* Copyright (c) 2007 by Armin Kuster <akuster@kama-aina.net> or
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* This code is licensed under the GNU GPL v2.
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/* Mainstone FPGA for extern irqs */
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#define FPGA_GPIO_PIN 0
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#define MST_NUM_IRQS 16
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#define MST_LEDDAT1 0x10
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#define MST_LEDDAT2 0x14
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#define MST_LEDCTRL 0x40
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#define MST_GPSWR 0x60
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#define MST_MSCWR1 0x80
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#define MST_MSCWR2 0x84
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#define MST_MSCWR3 0x88
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#define MST_MSCRD 0x90
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#define MST_INTMSKENA 0xc0
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#define MST_INTSETCLR 0xd0
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#define MST_PCMCIA0 0xe0
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#define MST_PCMCIA1 0xe4
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#define MST_PCMCIAx_READY (1 << 10)
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#define MST_PCMCIAx_nCD (1 << 5)
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#define MST_PCMCIA_CD0_IRQ 9
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#define MST_PCMCIA_CD1_IRQ 13
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typedef struct mst_irq_state{
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mst_fpga_set_irq(void *opaque, int irq, int level)
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mst_irq_state *s = (mst_irq_state *)opaque;
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uint32_t oldint = s->intsetclr & s->intmskena;
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s->prev_level |= 1u << irq;
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s->prev_level &= ~(1u << irq);
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case MST_PCMCIA_CD0_IRQ:
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s->pcmcia0 &= ~MST_PCMCIAx_nCD;
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s->pcmcia0 |= MST_PCMCIAx_nCD;
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case MST_PCMCIA_CD1_IRQ:
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s->pcmcia1 &= ~MST_PCMCIAx_nCD;
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s->pcmcia1 |= MST_PCMCIAx_nCD;
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if ((s->intmskena & (1u << irq)) && level)
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s->intsetclr |= 1u << irq;
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if (oldint != (s->intsetclr & s->intmskena))
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qemu_set_irq(s->parent, s->intsetclr & s->intmskena);
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mst_fpga_readb(void *opaque, target_phys_addr_t addr)
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mst_irq_state *s = (mst_irq_state *) opaque;
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printf("Mainstone - mst_fpga_readb: Bad register offset "
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"0x" TARGET_FMT_plx "\n", addr);
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mst_fpga_writeb(void *opaque, target_phys_addr_t addr, uint32_t value)
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mst_irq_state *s = (mst_irq_state *) opaque;
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case MST_INTMSKENA: /* Mask interrupt */
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s->intmskena = (value & 0xFEEFF);
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qemu_set_irq(s->parent, s->intsetclr & s->intmskena);
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case MST_INTSETCLR: /* clear or set interrupt */
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s->intsetclr = (value & 0xFEEFF);
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qemu_set_irq(s->parent, s->intsetclr & s->intmskena);
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/* For PCMCIAx allow the to change only power and reset */
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s->pcmcia0 = (value & 0x1f) | (s->pcmcia0 & ~0x1f);
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s->pcmcia1 = (value & 0x1f) | (s->pcmcia1 & ~0x1f);
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printf("Mainstone - mst_fpga_writeb: Bad register offset "
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"0x" TARGET_FMT_plx "\n", addr);
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static CPUReadMemoryFunc * const mst_fpga_readfn[] = {
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static CPUWriteMemoryFunc * const mst_fpga_writefn[] = {
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static int mst_fpga_post_load(void *opaque, int version_id)
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mst_irq_state *s = (mst_irq_state *) opaque;
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qemu_set_irq(s->parent, s->intsetclr & s->intmskena);
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static int mst_fpga_init(SysBusDevice *dev)
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s = FROM_SYSBUS(mst_irq_state, dev);
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s->pcmcia0 = MST_PCMCIAx_READY | MST_PCMCIAx_nCD;
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s->pcmcia1 = MST_PCMCIAx_READY | MST_PCMCIAx_nCD;
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sysbus_init_irq(dev, &s->parent);
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/* alloc the external 16 irqs */
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qdev_init_gpio_in(&dev->qdev, mst_fpga_set_irq, MST_NUM_IRQS);
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iomemtype = cpu_register_io_memory(mst_fpga_readfn,
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mst_fpga_writefn, s, DEVICE_NATIVE_ENDIAN);
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sysbus_init_mmio(dev, 0x00100000, iomemtype);
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static VMStateDescription vmstate_mst_fpga_regs = {
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.name = "mainstone_fpga",
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.minimum_version_id = 0,
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.minimum_version_id_old = 0,
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.post_load = mst_fpga_post_load,
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.fields = (VMStateField []) {
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VMSTATE_UINT32(prev_level, mst_irq_state),
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VMSTATE_UINT32(leddat1, mst_irq_state),
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VMSTATE_UINT32(leddat2, mst_irq_state),
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VMSTATE_UINT32(ledctrl, mst_irq_state),
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VMSTATE_UINT32(gpswr, mst_irq_state),
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VMSTATE_UINT32(mscwr1, mst_irq_state),
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VMSTATE_UINT32(mscwr2, mst_irq_state),
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VMSTATE_UINT32(mscwr3, mst_irq_state),
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VMSTATE_UINT32(mscrd, mst_irq_state),
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VMSTATE_UINT32(intmskena, mst_irq_state),
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VMSTATE_UINT32(intsetclr, mst_irq_state),
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VMSTATE_UINT32(pcmcia0, mst_irq_state),
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VMSTATE_UINT32(pcmcia1, mst_irq_state),
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VMSTATE_END_OF_LIST(),
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static SysBusDeviceInfo mst_fpga_info = {
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.init = mst_fpga_init,
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.qdev.name = "mainstone-fpga",
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.qdev.desc = "Mainstone II FPGA",
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.qdev.size = sizeof(mst_irq_state),
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.qdev.vmsd = &vmstate_mst_fpga_regs,
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static void mst_fpga_register(void)
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sysbus_register_withprop(&mst_fpga_info);
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device_init(mst_fpga_register);