[POWERPC] Make pci_read_irq_line the default on mpc7448hpc2 board
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>
diff --git a/arch/powerpc/sysdev/tsi108_pci.c b/arch/powerpc/sysdev/tsi108_pci.c
index 322f86e..ae249c6 100644
--- a/arch/powerpc/sysdev/tsi108_pci.c
+++ b/arch/powerpc/sysdev/tsi108_pci.c
@@ -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 @@
.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 @@
* 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();