4 * (c) Copyright 2000 The Puffin Group Inc.
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.
11 * by Helge Deller <deller@gmx.de>
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>
23 #include <asm/hardware.h>
27 #define WAX_GSC_IRQ 7 /* Hardcoded Interrupt for GSC */
29 static void wax_choose_irq(struct parisc_device
*dev
, void *ctrl
)
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 */
40 gsc_asic_assign_irq(ctrl
, irq
, &dev
->irq
);
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 */
48 gsc_asic_assign_irq(ctrl
, irq
, &dev
->aux_irq
);
52 wax_init_irq(struct gsc_asic
*wax
)
54 unsigned long base
= wax
->hpa
;
57 gsc_writel(0x00000000, base
+OFFSET_IMR
);
59 /* clear pending interrupts */
60 gsc_readl(base
+OFFSET_IRR
);
62 /* We're not really convinced we want to reset the onboard
63 * devices. Firmware does it for us...
67 // gsc_writel(0xFFFFFFFF, base+0x1000); /* HIL */
68 // gsc_writel(0xFFFFFFFF, base+0x2000); /* RS232-B on Wax */
71 static int __init
wax_init_chip(struct parisc_device
*dev
)
74 struct parisc_device
*parent
;
75 struct gsc_irq gsc_irq
;
78 wax
= kzalloc(sizeof(*wax
), GFP_KERNEL
);
83 wax
->hpa
= dev
->hpa
.start
;
85 wax
->version
= 0; /* gsc_readb(wax->hpa+WAX_VER); */
86 printk(KERN_INFO
"%s at 0x%lx found.\n", wax
->name
, wax
->hpa
);
88 /* Stop wax hissing for a bit */
91 /* the IRQ wax should use */
92 dev
->irq
= gsc_claim_irq(&gsc_irq
, WAX_GSC_IRQ
);
94 printk(KERN_ERR
"%s(): cannot get GSC irq\n",
100 wax
->eim
= ((u32
) gsc_irq
.txn_addr
) | gsc_irq
.txn_data
;
102 ret
= request_irq(gsc_irq
.irq
, gsc_asic_intr
, 0, "wax", wax
);
108 /* enable IRQ's for devices below WAX */
109 gsc_writel(wax
->eim
, wax
->hpa
+ OFFSET_IAR
);
111 /* Done init'ing, register this driver */
112 ret
= gsc_common_setup(dev
, wax
);
118 gsc_fixup_irqs(dev
, wax
, wax_choose_irq
);
119 /* On 715-class machines, Wax EISA is a sibling of Wax, not a child. */
120 parent
= parisc_parent(dev
);
121 if (parent
->id
.hw_type
!= HPHW_IOA
) {
122 gsc_fixup_irqs(parent
, wax
, wax_choose_irq
);
128 static struct parisc_device_id wax_tbl
[] = {
129 { HPHW_BA
, HVERSION_REV_ANY_ID
, HVERSION_ANY_ID
, 0x0008e },
133 MODULE_DEVICE_TABLE(parisc
, wax_tbl
);
135 struct parisc_driver wax_driver
= {
138 .probe
= wax_init_chip
,
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