patch-2.4.20 linux-2.4.20/drivers/gsc/wax.c
Next file: linux-2.4.20/drivers/hil/Config.in
Previous file: linux-2.4.20/drivers/gsc/serial.c
Back to the patch index
Back to the overall index
- Lines: 143
- Date:
Thu Nov 28 15:53:12 2002
- Orig file:
linux-2.4.19/drivers/gsc/wax.c
- Orig date:
Wed Dec 31 16:00:00 1969
diff -urN linux-2.4.19/drivers/gsc/wax.c linux-2.4.20/drivers/gsc/wax.c
@@ -0,0 +1,142 @@
+/*
+ * WAX Device Driver
+ *
+ * (c) Copyright 2000 The Puffin Group Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * by Helge Deller <deller@gmx.de>
+ */
+
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+
+#include <asm/io.h>
+#include <asm/hardware.h>
+#include <asm/gsc.h>
+#include <asm/irq.h>
+
+#include "busdevice.h"
+
+#define WAX_GSC_IRQ 7 /* Hardcoded Interrupt for GSC */
+#define WAX_GSC_NMI_IRQ 29
+
+static int wax_choose_irq(struct parisc_device *dev)
+{
+ int irq = -1;
+
+ switch (dev->id.sversion) {
+ case 0x73: irq = 30; break; /* HIL */
+ case 0x8c: irq = 25; break; /* RS232 */
+ case 0x90: irq = 21; break; /* WAX EISA BA */
+ }
+
+ return irq;
+}
+
+static void __init
+wax_init_irq(struct busdevice *wax)
+{
+ unsigned long base = wax->hpa;
+
+ /* Stop WAX barking for a bit */
+ gsc_writel(0x00000000, base+OFFSET_IMR);
+
+ /* clear pending interrupts */
+ (volatile u32) gsc_readl(base+OFFSET_IRR);
+
+ /* We're not really convinced we want to reset the onboard
+ * devices. Firmware does it for us...
+ */
+
+ /* Resets */
+// gsc_writel(0xFFFFFFFF, base+0x1000); /* HIL */
+// gsc_writel(0xFFFFFFFF, base+0x2000); /* RS232-B on Wax */
+
+ /* Ok we hit it on the head with a hammer, our Dog is now
+ ** comatose and muzzled. Devices will now unmask WAX
+ ** interrupts as they are registered as irq's in the WAX range.
+ */
+}
+
+int __init
+wax_init_chip(struct parisc_device *dev)
+{
+ struct busdevice *wax;
+ struct gsc_irq gsc_irq;
+ int irq, ret;
+
+ wax = kmalloc(sizeof(struct busdevice), GFP_KERNEL);
+ if (!wax)
+ return -ENOMEM;
+
+ wax->name = "Wax";
+ wax->hpa = dev->hpa;
+
+ wax->version = 0; /* gsc_readb(wax->hpa+WAX_VER); */
+ printk(KERN_INFO "%s at 0x%lx found.\n", wax->name, wax->hpa);
+
+ /* Stop wax hissing for a bit */
+ wax_init_irq(wax);
+
+ /* the IRQ wax should use */
+ irq = gsc_claim_irq(&gsc_irq, WAX_GSC_IRQ);
+ if (irq < 0) {
+ printk(KERN_ERR "%s(): cannot get GSC irq\n",
+ __FUNCTION__);
+ kfree(wax);
+ return -EBUSY;
+ }
+
+ ret = request_irq(gsc_irq.irq, busdev_barked, 0, "wax", wax);
+ if (ret < 0) {
+ kfree(wax);
+ return ret;
+ }
+
+ /* Save this for debugging later */
+ wax->parent_irq = gsc_irq.irq;
+ wax->eim = ((u32) gsc_irq.txn_addr) | gsc_irq.txn_data;
+
+ /* enable IRQ's for devices below WAX */
+ gsc_writel(wax->eim, wax->hpa + OFFSET_IAR);
+
+ /* Done init'ing, register this driver */
+ ret = gsc_common_irqsetup(dev, wax);
+ if (ret) {
+ kfree(wax);
+ return ret;
+ }
+
+ fixup_child_irqs(dev, wax->busdev_region->data.irqbase,
+ wax_choose_irq);
+ /* On 715-class machines, Wax EISA is a sibling of Wax, not a child. */
+ if (dev->parent->id.hw_type != HPHW_IOA) {
+ fixup_child_irqs(dev->parent, wax->busdev_region->data.irqbase,
+ wax_choose_irq);
+ }
+
+ return ret;
+}
+
+static struct parisc_device_id wax_tbl[] = {
+ { HPHW_BA, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0008e },
+ { 0, }
+};
+
+MODULE_DEVICE_TABLE(parisc, wax_tbl);
+
+struct parisc_driver wax_driver = {
+ name: "Wax",
+ id_table: wax_tbl,
+ probe: wax_init_chip,
+};
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)