diff options
Diffstat (limited to 'arch')
-rw-r--r-- | arch/m68k/hp300/Makefile | 2 | ||||
-rw-r--r-- | arch/m68k/hp300/config.c | 11 | ||||
-rw-r--r-- | arch/m68k/hp300/ints.c | 175 | ||||
-rw-r--r-- | arch/m68k/hp300/ints.h | 9 | ||||
-rw-r--r-- | arch/m68k/hp300/time.c | 3 |
5 files changed, 6 insertions, 194 deletions
diff --git a/arch/m68k/hp300/Makefile b/arch/m68k/hp300/Makefile index 89b6317899e3..288b9c67c9bf 100644 --- a/arch/m68k/hp300/Makefile +++ b/arch/m68k/hp300/Makefile | |||
@@ -2,4 +2,4 @@ | |||
2 | # Makefile for Linux arch/m68k/hp300 source directory | 2 | # Makefile for Linux arch/m68k/hp300 source directory |
3 | # | 3 | # |
4 | 4 | ||
5 | obj-y := ksyms.o config.o ints.o time.o reboot.o | 5 | obj-y := ksyms.o config.o time.o reboot.o |
diff --git a/arch/m68k/hp300/config.c b/arch/m68k/hp300/config.c index 6d129eef370f..2ef271cd818b 100644 --- a/arch/m68k/hp300/config.c +++ b/arch/m68k/hp300/config.c | |||
@@ -21,7 +21,6 @@ | |||
21 | #include <asm/hp300hw.h> | 21 | #include <asm/hp300hw.h> |
22 | #include <asm/rtc.h> | 22 | #include <asm/rtc.h> |
23 | 23 | ||
24 | #include "ints.h" | ||
25 | #include "time.h" | 24 | #include "time.h" |
26 | 25 | ||
27 | unsigned long hp300_model; | 26 | unsigned long hp300_model; |
@@ -64,8 +63,6 @@ static char *hp300_models[] __initdata = { | |||
64 | static char hp300_model_name[13] = "HP9000/"; | 63 | static char hp300_model_name[13] = "HP9000/"; |
65 | 64 | ||
66 | extern void hp300_reset(void); | 65 | extern void hp300_reset(void); |
67 | extern irqreturn_t (*hp300_default_handler[])(int, void *, struct pt_regs *); | ||
68 | extern int show_hp300_interrupts(struct seq_file *, void *); | ||
69 | #ifdef CONFIG_SERIAL_8250_CONSOLE | 66 | #ifdef CONFIG_SERIAL_8250_CONSOLE |
70 | extern int hp300_setup_serial_console(void) __init; | 67 | extern int hp300_setup_serial_console(void) __init; |
71 | #endif | 68 | #endif |
@@ -245,16 +242,16 @@ static unsigned int hp300_get_ss(void) | |||
245 | hp300_rtc_read(RTC_REG_SEC2); | 242 | hp300_rtc_read(RTC_REG_SEC2); |
246 | } | 243 | } |
247 | 244 | ||
245 | static void __init hp300_init_IRQ(void) | ||
246 | { | ||
247 | } | ||
248 | |||
248 | void __init config_hp300(void) | 249 | void __init config_hp300(void) |
249 | { | 250 | { |
250 | mach_sched_init = hp300_sched_init; | 251 | mach_sched_init = hp300_sched_init; |
251 | mach_init_IRQ = hp300_init_IRQ; | 252 | mach_init_IRQ = hp300_init_IRQ; |
252 | mach_request_irq = hp300_request_irq; | ||
253 | mach_free_irq = hp300_free_irq; | ||
254 | mach_get_model = hp300_get_model; | 253 | mach_get_model = hp300_get_model; |
255 | mach_get_irq_list = show_hp300_interrupts; | ||
256 | mach_gettimeoffset = hp300_gettimeoffset; | 254 | mach_gettimeoffset = hp300_gettimeoffset; |
257 | mach_default_handler = &hp300_default_handler; | ||
258 | mach_hwclk = hp300_hwclk; | 255 | mach_hwclk = hp300_hwclk; |
259 | mach_get_ss = hp300_get_ss; | 256 | mach_get_ss = hp300_get_ss; |
260 | mach_reset = hp300_reset; | 257 | mach_reset = hp300_reset; |
diff --git a/arch/m68k/hp300/ints.c b/arch/m68k/hp300/ints.c deleted file mode 100644 index 0c5bb403e893..000000000000 --- a/arch/m68k/hp300/ints.c +++ /dev/null | |||
@@ -1,175 +0,0 @@ | |||
1 | /* | ||
2 | * linux/arch/m68k/hp300/ints.c | ||
3 | * | ||
4 | * Copyright (C) 1998 Philip Blundell <philb@gnu.org> | ||
5 | * | ||
6 | * This file contains the HP300-specific interrupt handling. | ||
7 | * We only use the autovector interrupts, and therefore we need to | ||
8 | * maintain lists of devices sharing each ipl. | ||
9 | * [ipl list code added by Peter Maydell <pmaydell@chiark.greenend.org.uk> 06/1998] | ||
10 | */ | ||
11 | |||
12 | #include <linux/kernel.h> | ||
13 | #include <linux/types.h> | ||
14 | #include <linux/init.h> | ||
15 | #include <linux/sched.h> | ||
16 | #include <linux/kernel_stat.h> | ||
17 | #include <linux/interrupt.h> | ||
18 | #include <linux/spinlock.h> | ||
19 | #include <asm/machdep.h> | ||
20 | #include <asm/irq.h> | ||
21 | #include <asm/io.h> | ||
22 | #include <asm/system.h> | ||
23 | #include <asm/traps.h> | ||
24 | #include <asm/ptrace.h> | ||
25 | #include <asm/errno.h> | ||
26 | #include "ints.h" | ||
27 | |||
28 | /* Each ipl has a linked list of interrupt service routines. | ||
29 | * Service routines are added via hp300_request_irq() and removed | ||
30 | * via hp300_free_irq(). The device driver should set IRQ_FLG_FAST | ||
31 | * if it needs to be serviced early (eg FIFOless UARTs); this will | ||
32 | * cause it to be added at the front of the queue rather than | ||
33 | * the back. | ||
34 | * Currently IRQ_FLG_SLOW and flags=0 are treated identically; if | ||
35 | * we needed three levels of priority we could distinguish them | ||
36 | * but this strikes me as mildly ugly... | ||
37 | */ | ||
38 | |||
39 | /* we start with no entries in any list */ | ||
40 | static irq_node_t *hp300_irq_list[HP300_NUM_IRQS]; | ||
41 | |||
42 | static spinlock_t irqlist_lock; | ||
43 | |||
44 | /* This handler receives all interrupts, dispatching them to the registered handlers */ | ||
45 | static irqreturn_t hp300_int_handler(int irq, void *dev_id, struct pt_regs *fp) | ||
46 | { | ||
47 | irq_node_t *t; | ||
48 | /* We just give every handler on the chain an opportunity to handle | ||
49 | * the interrupt, in priority order. | ||
50 | */ | ||
51 | for(t = hp300_irq_list[irq]; t; t=t->next) | ||
52 | t->handler(irq, t->dev_id, fp); | ||
53 | /* We could put in some accounting routines, checks for stray interrupts, | ||
54 | * etc, in here. Note that currently we can't tell whether or not | ||
55 | * a handler handles the interrupt, though. | ||
56 | */ | ||
57 | return IRQ_HANDLED; | ||
58 | } | ||
59 | |||
60 | static irqreturn_t hp300_badint(int irq, void *dev_id, struct pt_regs *fp) | ||
61 | { | ||
62 | num_spurious += 1; | ||
63 | return IRQ_NONE; | ||
64 | } | ||
65 | |||
66 | irqreturn_t (*hp300_default_handler[SYS_IRQS])(int, void *, struct pt_regs *) = { | ||
67 | [0] = hp300_badint, | ||
68 | [1] = hp300_int_handler, | ||
69 | [2] = hp300_int_handler, | ||
70 | [3] = hp300_int_handler, | ||
71 | [4] = hp300_int_handler, | ||
72 | [5] = hp300_int_handler, | ||
73 | [6] = hp300_int_handler, | ||
74 | [7] = hp300_int_handler | ||
75 | }; | ||
76 | |||
77 | /* dev_id had better be unique to each handler because it's the only way we have | ||
78 | * to distinguish handlers when removing them... | ||
79 | * | ||
80 | * It would be pretty easy to support IRQ_FLG_LOCK (handler is not replacable) | ||
81 | * and IRQ_FLG_REPLACE (handler replaces existing one with this dev_id) | ||
82 | * if we wanted to. IRQ_FLG_FAST is needed for devices where interrupt latency | ||
83 | * matters (eg the dreaded FIFOless UART...) | ||
84 | */ | ||
85 | int hp300_request_irq(unsigned int irq, | ||
86 | irqreturn_t (*handler) (int, void *, struct pt_regs *), | ||
87 | unsigned long flags, const char *devname, void *dev_id) | ||
88 | { | ||
89 | irq_node_t *t, *n = new_irq_node(); | ||
90 | |||
91 | if (!n) /* oops, no free nodes */ | ||
92 | return -ENOMEM; | ||
93 | |||
94 | spin_lock_irqsave(&irqlist_lock, flags); | ||
95 | |||
96 | if (!hp300_irq_list[irq]) { | ||
97 | /* no list yet */ | ||
98 | hp300_irq_list[irq] = n; | ||
99 | n->next = NULL; | ||
100 | } else if (flags & IRQ_FLG_FAST) { | ||
101 | /* insert at head of list */ | ||
102 | n->next = hp300_irq_list[irq]; | ||
103 | hp300_irq_list[irq] = n; | ||
104 | } else { | ||
105 | /* insert at end of list */ | ||
106 | for(t = hp300_irq_list[irq]; t->next; t = t->next) | ||
107 | /* do nothing */; | ||
108 | n->next = NULL; | ||
109 | t->next = n; | ||
110 | } | ||
111 | |||
112 | /* Fill in n appropriately */ | ||
113 | n->handler = handler; | ||
114 | n->flags = flags; | ||
115 | n->dev_id = dev_id; | ||
116 | n->devname = devname; | ||
117 | spin_unlock_irqrestore(&irqlist_lock, flags); | ||
118 | return 0; | ||
119 | } | ||
120 | |||
121 | void hp300_free_irq(unsigned int irq, void *dev_id) | ||
122 | { | ||
123 | irq_node_t *t; | ||
124 | unsigned long flags; | ||
125 | |||
126 | spin_lock_irqsave(&irqlist_lock, flags); | ||
127 | |||
128 | t = hp300_irq_list[irq]; | ||
129 | if (!t) /* no handlers at all for that IRQ */ | ||
130 | { | ||
131 | printk(KERN_ERR "hp300_free_irq: attempt to remove nonexistent handler for IRQ %d\n", irq); | ||
132 | spin_unlock_irqrestore(&irqlist_lock, flags); | ||
133 | return; | ||
134 | } | ||
135 | |||
136 | if (t->dev_id == dev_id) | ||
137 | { /* removing first handler on chain */ | ||
138 | t->flags = IRQ_FLG_STD; /* we probably don't really need these */ | ||
139 | t->dev_id = NULL; | ||
140 | t->devname = NULL; | ||
141 | t->handler = NULL; /* frees this irq_node_t */ | ||
142 | hp300_irq_list[irq] = t->next; | ||
143 | spin_unlock_irqrestore(&irqlist_lock, flags); | ||
144 | return; | ||
145 | } | ||
146 | |||
147 | /* OK, must be removing from middle of the chain */ | ||
148 | |||
149 | for (t = hp300_irq_list[irq]; t->next && t->next->dev_id != dev_id; t = t->next) | ||
150 | /* do nothing */; | ||
151 | if (!t->next) | ||
152 | { | ||
153 | printk(KERN_ERR "hp300_free_irq: attempt to remove nonexistent handler for IRQ %d\n", irq); | ||
154 | spin_unlock_irqrestore(&irqlist_lock, flags); | ||
155 | return; | ||
156 | } | ||
157 | /* remove the entry after t: */ | ||
158 | t->next->flags = IRQ_FLG_STD; | ||
159 | t->next->dev_id = NULL; | ||
160 | t->next->devname = NULL; | ||
161 | t->next->handler = NULL; | ||
162 | t->next = t->next->next; | ||
163 | |||
164 | spin_unlock_irqrestore(&irqlist_lock, flags); | ||
165 | } | ||
166 | |||
167 | int show_hp300_interrupts(struct seq_file *p, void *v) | ||
168 | { | ||
169 | return 0; | ||
170 | } | ||
171 | |||
172 | void __init hp300_init_IRQ(void) | ||
173 | { | ||
174 | spin_lock_init(&irqlist_lock); | ||
175 | } | ||
diff --git a/arch/m68k/hp300/ints.h b/arch/m68k/hp300/ints.h deleted file mode 100644 index 8cfabe2f3840..000000000000 --- a/arch/m68k/hp300/ints.h +++ /dev/null | |||
@@ -1,9 +0,0 @@ | |||
1 | extern void hp300_init_IRQ(void); | ||
2 | extern void (*hp300_handlers[8])(int, void *, struct pt_regs *); | ||
3 | extern void hp300_free_irq(unsigned int irq, void *dev_id); | ||
4 | extern int hp300_request_irq(unsigned int irq, | ||
5 | irqreturn_t (*handler) (int, void *, struct pt_regs *), | ||
6 | unsigned long flags, const char *devname, void *dev_id); | ||
7 | |||
8 | /* number of interrupts, includes 0 (what's that?) */ | ||
9 | #define HP300_NUM_IRQS 8 | ||
diff --git a/arch/m68k/hp300/time.c b/arch/m68k/hp300/time.c index 8da5b1b31e61..7df05662b277 100644 --- a/arch/m68k/hp300/time.c +++ b/arch/m68k/hp300/time.c | |||
@@ -18,7 +18,6 @@ | |||
18 | #include <asm/system.h> | 18 | #include <asm/system.h> |
19 | #include <asm/traps.h> | 19 | #include <asm/traps.h> |
20 | #include <asm/blinken.h> | 20 | #include <asm/blinken.h> |
21 | #include "ints.h" | ||
22 | 21 | ||
23 | /* Clock hardware definitions */ | 22 | /* Clock hardware definitions */ |
24 | 23 | ||
@@ -71,7 +70,7 @@ void __init hp300_sched_init(irqreturn_t (*vector)(int, void *, struct pt_regs * | |||
71 | 70 | ||
72 | asm volatile(" movpw %0,%1@(5)" : : "d" (INTVAL), "a" (CLOCKBASE)); | 71 | asm volatile(" movpw %0,%1@(5)" : : "d" (INTVAL), "a" (CLOCKBASE)); |
73 | 72 | ||
74 | cpu_request_irq(6, hp300_tick, IRQ_FLG_STD, "timer tick", vector); | 73 | request_irq(IRQ_AUTO_6, hp300_tick, IRQ_FLG_STD, "timer tick", vector); |
75 | 74 | ||
76 | out_8(CLOCKBASE + CLKCR2, 0x1); /* select CR1 */ | 75 | out_8(CLOCKBASE + CLKCR2, 0x1); /* select CR1 */ |
77 | out_8(CLOCKBASE + CLKCR1, 0x40); /* enable irq */ | 76 | out_8(CLOCKBASE + CLKCR1, 0x40); /* enable irq */ |