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Viewing changes to arch/powerpc/sysdev/tsi108_pci.c

  • Committer: Bazaar Package Importer
  • Author(s): Paolo Pisati
  • Date: 2011-06-29 15:23:51 UTC
  • mfrom: (26.1.1 natty-proposed)
  • Revision ID: james.westby@ubuntu.com-20110629152351-xs96tm303d95rpbk
Tags: 3.0.0-1200.2
* Rebased against 3.0.0-6.7
* BSP from TI based on 3.0.0

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Lines of Context:
arch/powerpc/sysdev/tsi108_pci.c
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 * Linux descriptor level callbacks
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 */
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static void tsi108_pci_irq_enable(u_int irq)
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{
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        tsi108_pci_int_unmask(irq);
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}
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static void tsi108_pci_irq_disable(u_int irq)
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{
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        tsi108_pci_int_mask(irq);
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}
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static void tsi108_pci_irq_ack(u_int irq)
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{
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        tsi108_pci_int_mask(irq);
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}
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static void tsi108_pci_irq_end(u_int irq)
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{
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        tsi108_pci_int_unmask(irq);
 
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static void tsi108_pci_irq_unmask(struct irq_data *d)
 
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{
 
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        tsi108_pci_int_unmask(d->irq);
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        /* Enable interrupts from PCI block */
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        tsi108_write_reg(TSI108_PCI_OFFSET + TSI108_PCI_IRP_ENABLE,
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        mb();
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}
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static void tsi108_pci_irq_mask(struct irq_data *d)
 
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{
 
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        tsi108_pci_int_mask(d->irq);
 
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}
 
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static void tsi108_pci_irq_ack(struct irq_data *d)
 
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{
 
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        tsi108_pci_int_mask(d->irq);
 
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}
 
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/*
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 * Interrupt controller descriptor for cascaded PCI interrupt controller.
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 */
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static struct irq_chip tsi108_pci_irq = {
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        .name = "tsi108_PCI_int",
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        .mask = tsi108_pci_irq_disable,
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        .ack = tsi108_pci_irq_ack,
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        .end = tsi108_pci_irq_end,
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        .unmask = tsi108_pci_irq_enable,
 
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        .irq_mask = tsi108_pci_irq_mask,
 
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        .irq_ack = tsi108_pci_irq_ack,
 
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        .irq_unmask = tsi108_pci_irq_unmask,
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};
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static int pci_irq_host_xlate(struct irq_host *h, struct device_node *ct,
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        DBG("%s(%d, 0x%lx)\n", __func__, virq, hw);
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        if ((virq >= 1) && (virq <= 4)){
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                irq = virq + IRQ_PCI_INTAD_BASE - 1;
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                irq_to_desc(irq)->status |= IRQ_LEVEL;
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                set_irq_chip(irq, &tsi108_pci_irq);
 
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                irq_set_status_flags(irq, IRQ_LEVEL);
 
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                irq_set_chip(irq, &tsi108_pci_irq);
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        }
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        return 0;
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}
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void tsi108_irq_cascade(unsigned int irq, struct irq_desc *desc)
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{
 
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        struct irq_chip *chip = irq_desc_get_chip(desc);
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        unsigned int cascade_irq = get_pci_source();
 
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        if (cascade_irq != NO_IRQ)
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                generic_handle_irq(cascade_irq);
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        desc->chip->eoi(irq);
 
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        chip->irq_eoi(&desc->irq_data);
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}