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[POWERPC] Make pci_read_irq_line the default on mpc7448hpc2 board

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The following patch adds a tsi108/9 pci interrupt controller host.
On mpc7448hpc2 board, pci_irq_fixup function is removed, which makes the
pci_read_irq_line be the default pci irq fixup.

Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Zang Roy-r61911
2006-11-14 14:31:50 +08:00
committed by Paul Mackerras
parent 533462df56
commit 5873c9bdb0
3 changed files with 93 additions and 87 deletions
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48
arch/powerpc/sysdev/tsi108_pci.c
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@@ -3,6 +3,8 @@
*
* 2004-2005 (c) Tundra Semiconductor Corp.
* Author: Alex Bounine (alexandreb@tundra.com)
* Author: Roy Zang (tie-fei.zang@freescale.com)
* Add pci interrupt router host
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
@@ -48,6 +50,8 @@
u32 tsi108_pci_cfg_base;
u32 tsi108_csr_vir_base;
static struct device_node *pci_irq_node;
static struct irq_host *pci_irq_host;
extern u32 get_vir_csrbase(void);
extern u32 tsi108_read_reg(u32 reg_offset);
@@ -378,6 +382,38 @@ static struct irq_chip tsi108_pci_irq = {
.unmask = tsi108_pci_irq_enable,
};
static int pci_irq_host_xlate(struct irq_host *h, struct device_node *ct,
u32 *intspec, unsigned int intsize,
irq_hw_number_t *out_hwirq, unsigned int *out_flags)
{
*out_hwirq = intspec[0];
*out_flags = IRQ_TYPE_LEVEL_HIGH;
return 0;
}
static int pci_irq_host_map(struct irq_host *h, unsigned int virq,
irq_hw_number_t hw)
{ unsigned int irq;
DBG("%s(%d, 0x%lx)\n", __FUNCTION__, virq, hw);
if ((virq >= 1) && (virq <= 4)){
irq = virq + IRQ_PCI_INTAD_BASE - 1;
get_irq_desc(irq)->status |= IRQ_LEVEL;
set_irq_chip(irq, &tsi108_pci_irq);
}
return 0;
}
static int pci_irq_host_match(struct irq_host *h, struct device_node *node)
{
return pci_irq_node == node;
}
static struct irq_host_ops pci_irq_host_ops = {
.match = pci_irq_host_match,
.map = pci_irq_host_map,
.xlate = pci_irq_host_xlate,
};
/*
* Exported functions
*/
@@ -391,15 +427,15 @@ static struct irq_chip tsi108_pci_irq = {
* to the MPIC.
*/
void __init tsi108_pci_int_init(void)
void __init tsi108_pci_int_init(struct device_node *node)
{
u_int i;
DBG("Tsi108_pci_int_init: initializing PCI interrupts\n");
for (i = 0; i < NUM_PCI_IRQS; i++) {
irq_desc[i + IRQ_PCI_INTAD_BASE].chip = &tsi108_pci_irq;
irq_desc[i + IRQ_PCI_INTAD_BASE].status |= IRQ_LEVEL;
pci_irq_node = of_node_get(node);
pci_irq_host = irq_alloc_host(IRQ_HOST_MAP_LEGACY, 0, &pci_irq_host_ops, 0);
if (pci_irq_host == NULL) {
printk(KERN_ERR "pci_irq_host: failed to allocate irq host !\n");
return;
}
init_pci_source();