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Diffstat (limited to 'arch/mips/sni/irq.c')
-rw-r--r--arch/mips/sni/irq.c37
1 files changed, 27 insertions, 10 deletions
diff --git a/arch/mips/sni/irq.c b/arch/mips/sni/irq.c
index 952038aa4b90..7365b4853ddb 100644
--- a/arch/mips/sni/irq.c
+++ b/arch/mips/sni/irq.c
@@ -19,8 +19,6 @@
19 19
20DEFINE_SPINLOCK(pciasic_lock); 20DEFINE_SPINLOCK(pciasic_lock);
21 21
22extern asmlinkage void sni_rm200_pci_handle_int(void);
23
24static void enable_pciasic_irq(unsigned int irq) 22static void enable_pciasic_irq(unsigned int irq)
25{ 23{
26 unsigned int mask = 1 << (irq - PCIMT_IRQ_INT2); 24 unsigned int mask = 1 << (irq - PCIMT_IRQ_INT2);
@@ -71,20 +69,20 @@ static struct hw_interrupt_type pciasic_irq_type = {
71 * hwint0 should deal with MP agent, ASIC PCI, EISA NMI and debug 69 * hwint0 should deal with MP agent, ASIC PCI, EISA NMI and debug
72 * button interrupts. Later ... 70 * button interrupts. Later ...
73 */ 71 */
74void pciasic_hwint0(struct pt_regs *regs) 72static void pciasic_hwint0(struct pt_regs *regs)
75{ 73{
76 panic("Received int0 but no handler yet ..."); 74 panic("Received int0 but no handler yet ...");
77} 75}
78 76
79/* This interrupt was used for the com1 console on the first prototypes. */ 77/* This interrupt was used for the com1 console on the first prototypes. */
80void pciasic_hwint2(struct pt_regs *regs) 78static void pciasic_hwint2(struct pt_regs *regs)
81{ 79{
82 /* I think this shouldn't happen on production machines. */ 80 /* I think this shouldn't happen on production machines. */
83 panic("hwint2 and no handler yet"); 81 panic("hwint2 and no handler yet");
84} 82}
85 83
86/* hwint5 is the r4k count / compare interrupt */ 84/* hwint5 is the r4k count / compare interrupt */
87void pciasic_hwint5(struct pt_regs *regs) 85static void pciasic_hwint5(struct pt_regs *regs)
88{ 86{
89 panic("hwint5 and no handler yet"); 87 panic("hwint5 and no handler yet");
90} 88}
@@ -105,7 +103,7 @@ static unsigned int ls1bit8(unsigned int x)
105 * 103 *
106 * The EISA_INT bit in CSITPEND is high active, all others are low active. 104 * The EISA_INT bit in CSITPEND is high active, all others are low active.
107 */ 105 */
108void pciasic_hwint1(struct pt_regs *regs) 106static void pciasic_hwint1(struct pt_regs *regs)
109{ 107{
110 u8 pend = *(volatile char *)PCIMT_CSITPEND; 108 u8 pend = *(volatile char *)PCIMT_CSITPEND;
111 unsigned long flags; 109 unsigned long flags;
@@ -135,7 +133,7 @@ void pciasic_hwint1(struct pt_regs *regs)
135/* 133/*
136 * hwint 3 should deal with the PCI A - D interrupts, 134 * hwint 3 should deal with the PCI A - D interrupts,
137 */ 135 */
138void pciasic_hwint3(struct pt_regs *regs) 136static void pciasic_hwint3(struct pt_regs *regs)
139{ 137{
140 u8 pend = *(volatile char *)PCIMT_CSITPEND; 138 u8 pend = *(volatile char *)PCIMT_CSITPEND;
141 int irq; 139 int irq;
@@ -150,13 +148,34 @@ void pciasic_hwint3(struct pt_regs *regs)
150/* 148/*
151 * hwint 4 is used for only the onboard PCnet 32. 149 * hwint 4 is used for only the onboard PCnet 32.
152 */ 150 */
153void pciasic_hwint4(struct pt_regs *regs) 151static void pciasic_hwint4(struct pt_regs *regs)
154{ 152{
155 clear_c0_status(IE_IRQ4); 153 clear_c0_status(IE_IRQ4);
156 do_IRQ(PCIMT_IRQ_ETHERNET, regs); 154 do_IRQ(PCIMT_IRQ_ETHERNET, regs);
157 set_c0_status(IE_IRQ4); 155 set_c0_status(IE_IRQ4);
158} 156}
159 157
158asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
159{
160 unsigned int pending = read_c0_status() & read_c0_cause();
161 static unsigned char led_cache;
162
163 *(volatile unsigned char *) PCIMT_CSLED = ++led_cache;
164
165 if (pending & 0x0800)
166 pciasic_hwint1(regs);
167 else if (pending & 0x4000)
168 pciasic_hwint4(regs);
169 else if (pending & 0x2000)
170 pciasic_hwint3(regs);
171 else if (pending & 0x1000)
172 pciasic_hwint2(regs);
173 else if (pending & 0x8000)
174 pciasic_hwint5(regs);
175 else if (pending & 0x0400)
176 pciasic_hwint0(regs);
177}
178
160void __init init_pciasic(void) 179void __init init_pciasic(void)
161{ 180{
162 unsigned long flags; 181 unsigned long flags;
@@ -176,8 +195,6 @@ void __init arch_init_irq(void)
176{ 195{
177 int i; 196 int i;
178 197
179 set_except_vector(0, sni_rm200_pci_handle_int);
180
181 init_i8259_irqs(); /* Integrated i8259 */ 198 init_i8259_irqs(); /* Integrated i8259 */
182 init_pciasic(); 199 init_pciasic();
183 200