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 */
28 #define WAX_GSC_NMI_IRQ 29
30 static void wax_choose_irq(struct parisc_device *dev, void *ctrl)
34 switch (dev->id.sversion) {
35 case 0x73: irq = 1; break; /* HIL */
36 case 0x8c: irq = 6; break; /* RS232 */
37 case 0x90: irq = 10; break; /* WAX EISA BA */
38 default: return; /* Unknown */
41 gsc_asic_assign_irq(ctrl, irq, &dev->irq);
45 wax_init_irq(struct gsc_asic *wax)
47 unsigned long base = wax->hpa;
49 /* Stop WAX barking for a bit */
50 gsc_writel(0x00000000, base+OFFSET_IMR);
52 /* clear pending interrupts */
53 gsc_readl(base+OFFSET_IRR);
55 /* We're not really convinced we want to reset the onboard
56 * devices. Firmware does it for us...
60 // gsc_writel(0xFFFFFFFF, base+0x1000); /* HIL */
61 // gsc_writel(0xFFFFFFFF, base+0x2000); /* RS232-B on Wax */
63 /* Ok we hit it on the head with a hammer, our Dog is now
64 ** comatose and muzzled. Devices will now unmask WAX
65 ** interrupts as they are registered as irq's in the WAX range.
70 wax_init_chip(struct parisc_device *dev)
73 struct parisc_device *parent;
74 struct gsc_irq gsc_irq;
77 wax = kmalloc(sizeof(*wax), GFP_KERNEL);
84 wax->version = 0; /* gsc_readb(wax->hpa+WAX_VER); */
85 printk(KERN_INFO "%s at 0x%lx found.\n", wax->name, wax->hpa);
87 /* Stop wax hissing for a bit */
90 /* the IRQ wax should use */
91 dev->irq = gsc_claim_irq(&gsc_irq, WAX_GSC_IRQ);
93 printk(KERN_ERR "%s(): cannot get GSC irq\n",
99 wax->eim = ((u32) gsc_irq.txn_addr) | gsc_irq.txn_data;
101 ret = request_irq(gsc_irq.irq, gsc_asic_intr, 0, "wax", wax);
107 /* enable IRQ's for devices below WAX */
108 gsc_writel(wax->eim, wax->hpa + OFFSET_IAR);
110 /* Done init'ing, register this driver */
111 ret = gsc_common_setup(dev, wax);
117 gsc_fixup_irqs(dev, wax, wax_choose_irq);
118 /* On 715-class machines, Wax EISA is a sibling of Wax, not a child. */
119 parent = parisc_parent(dev);
120 if (parent->id.hw_type != HPHW_IOA) {
121 gsc_fixup_irqs(parent, wax, wax_choose_irq);
127 static struct parisc_device_id wax_tbl[] = {
128 { HPHW_BA, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0008e },
132 MODULE_DEVICE_TABLE(parisc, wax_tbl);
134 struct parisc_driver wax_driver = {
137 .probe = wax_init_chip,