diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/parisc/wax.c |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'drivers/parisc/wax.c')
-rw-r--r-- | drivers/parisc/wax.c | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/drivers/parisc/wax.c b/drivers/parisc/wax.c new file mode 100644 index 000000000000..e547d7d024d8 --- /dev/null +++ b/drivers/parisc/wax.c | |||
@@ -0,0 +1,140 @@ | |||
1 | /* | ||
2 | * WAX Device Driver | ||
3 | * | ||
4 | * (c) Copyright 2000 The Puffin Group Inc. | ||
5 | * | ||
6 | * This program is free software; you can redistribute it and/or modify | ||
7 | * it under the terms of the GNU General Public License as published by | ||
8 | * the Free Software Foundation; either version 2 of the License, or | ||
9 | * (at your option) any later version. | ||
10 | * | ||
11 | * by Helge Deller <deller@gmx.de> | ||
12 | */ | ||
13 | |||
14 | #include <linux/errno.h> | ||
15 | #include <linux/init.h> | ||
16 | #include <linux/interrupt.h> | ||
17 | #include <linux/ioport.h> | ||
18 | #include <linux/slab.h> | ||
19 | #include <linux/module.h> | ||
20 | #include <linux/types.h> | ||
21 | |||
22 | #include <asm/io.h> | ||
23 | #include <asm/hardware.h> | ||
24 | |||
25 | #include "gsc.h" | ||
26 | |||
27 | #define WAX_GSC_IRQ 7 /* Hardcoded Interrupt for GSC */ | ||
28 | |||
29 | static void wax_choose_irq(struct parisc_device *dev, void *ctrl) | ||
30 | { | ||
31 | int irq; | ||
32 | |||
33 | switch (dev->id.sversion) { | ||
34 | case 0x73: irq = 1; break; /* i8042 General */ | ||
35 | case 0x8c: irq = 6; break; /* Serial */ | ||
36 | case 0x90: irq = 10; break; /* EISA */ | ||
37 | default: return; /* Unknown */ | ||
38 | } | ||
39 | |||
40 | gsc_asic_assign_irq(ctrl, irq, &dev->irq); | ||
41 | |||
42 | switch (dev->id.sversion) { | ||
43 | case 0x73: irq = 2; break; /* i8042 High-priority */ | ||
44 | case 0x90: irq = 0; break; /* EISA NMI */ | ||
45 | default: return; /* No secondary IRQ */ | ||
46 | } | ||
47 | |||
48 | gsc_asic_assign_irq(ctrl, irq, &dev->aux_irq); | ||
49 | } | ||
50 | |||
51 | static void __init | ||
52 | wax_init_irq(struct gsc_asic *wax) | ||
53 | { | ||
54 | unsigned long base = wax->hpa; | ||
55 | |||
56 | /* Wax-off */ | ||
57 | gsc_writel(0x00000000, base+OFFSET_IMR); | ||
58 | |||
59 | /* clear pending interrupts */ | ||
60 | gsc_readl(base+OFFSET_IRR); | ||
61 | |||
62 | /* We're not really convinced we want to reset the onboard | ||
63 | * devices. Firmware does it for us... | ||
64 | */ | ||
65 | |||
66 | /* Resets */ | ||
67 | // gsc_writel(0xFFFFFFFF, base+0x1000); /* HIL */ | ||
68 | // gsc_writel(0xFFFFFFFF, base+0x2000); /* RS232-B on Wax */ | ||
69 | } | ||
70 | |||
71 | int __init | ||
72 | wax_init_chip(struct parisc_device *dev) | ||
73 | { | ||
74 | struct gsc_asic *wax; | ||
75 | struct parisc_device *parent; | ||
76 | struct gsc_irq gsc_irq; | ||
77 | int ret; | ||
78 | |||
79 | wax = kmalloc(sizeof(*wax), GFP_KERNEL); | ||
80 | if (!wax) | ||
81 | return -ENOMEM; | ||
82 | |||
83 | wax->name = "wax"; | ||
84 | wax->hpa = dev->hpa; | ||
85 | |||
86 | wax->version = 0; /* gsc_readb(wax->hpa+WAX_VER); */ | ||
87 | printk(KERN_INFO "%s at 0x%lx found.\n", wax->name, wax->hpa); | ||
88 | |||
89 | /* Stop wax hissing for a bit */ | ||
90 | wax_init_irq(wax); | ||
91 | |||
92 | /* the IRQ wax should use */ | ||
93 | dev->irq = gsc_claim_irq(&gsc_irq, WAX_GSC_IRQ); | ||
94 | if (dev->irq < 0) { | ||
95 | printk(KERN_ERR "%s(): cannot get GSC irq\n", | ||
96 | __FUNCTION__); | ||
97 | kfree(wax); | ||
98 | return -EBUSY; | ||
99 | } | ||
100 | |||
101 | wax->eim = ((u32) gsc_irq.txn_addr) | gsc_irq.txn_data; | ||
102 | |||
103 | ret = request_irq(gsc_irq.irq, gsc_asic_intr, 0, "wax", wax); | ||
104 | if (ret < 0) { | ||
105 | kfree(wax); | ||
106 | return ret; | ||
107 | } | ||
108 | |||
109 | /* enable IRQ's for devices below WAX */ | ||
110 | gsc_writel(wax->eim, wax->hpa + OFFSET_IAR); | ||
111 | |||
112 | /* Done init'ing, register this driver */ | ||
113 | ret = gsc_common_setup(dev, wax); | ||
114 | if (ret) { | ||
115 | kfree(wax); | ||
116 | return ret; | ||
117 | } | ||
118 | |||
119 | gsc_fixup_irqs(dev, wax, wax_choose_irq); | ||
120 | /* On 715-class machines, Wax EISA is a sibling of Wax, not a child. */ | ||
121 | parent = parisc_parent(dev); | ||
122 | if (parent->id.hw_type != HPHW_IOA) { | ||
123 | gsc_fixup_irqs(parent, wax, wax_choose_irq); | ||
124 | } | ||
125 | |||
126 | return ret; | ||
127 | } | ||
128 | |||
129 | static struct parisc_device_id wax_tbl[] = { | ||
130 | { HPHW_BA, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0008e }, | ||
131 | { 0, } | ||
132 | }; | ||
133 | |||
134 | MODULE_DEVICE_TABLE(parisc, wax_tbl); | ||
135 | |||
136 | struct parisc_driver wax_driver = { | ||
137 | .name = "wax", | ||
138 | .id_table = wax_tbl, | ||
139 | .probe = wax_init_chip, | ||
140 | }; | ||