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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /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.c140
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 @@
+/*
+ * 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/types.h>
+
+#include <asm/io.h>
+#include <asm/hardware.h>
+
+#include "gsc.h"
+
+#define WAX_GSC_IRQ 7 /* Hardcoded Interrupt for GSC */
+
+static void wax_choose_irq(struct parisc_device *dev, void *ctrl)
+{
+ int irq;
+
+ switch (dev->id.sversion) {
+ case 0x73: irq = 1; break; /* i8042 General */
+ case 0x8c: irq = 6; break; /* Serial */
+ case 0x90: irq = 10; break; /* EISA */
+ default: return; /* Unknown */
+ }
+
+ gsc_asic_assign_irq(ctrl, irq, &dev->irq);
+
+ switch (dev->id.sversion) {
+ case 0x73: irq = 2; break; /* i8042 High-priority */
+ case 0x90: irq = 0; break; /* EISA NMI */
+ default: return; /* No secondary IRQ */
+ }
+
+ gsc_asic_assign_irq(ctrl, irq, &dev->aux_irq);
+}
+
+static void __init
+wax_init_irq(struct gsc_asic *wax)
+{
+ unsigned long base = wax->hpa;
+
+ /* Wax-off */
+ gsc_writel(0x00000000, base+OFFSET_IMR);
+
+ /* clear pending interrupts */
+ 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 */
+}
+
+int __init
+wax_init_chip(struct parisc_device *dev)
+{
+ struct gsc_asic *wax;
+ struct parisc_device *parent;
+ struct gsc_irq gsc_irq;
+ int ret;
+
+ wax = kmalloc(sizeof(*wax), 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 */
+ dev->irq = gsc_claim_irq(&gsc_irq, WAX_GSC_IRQ);
+ if (dev->irq < 0) {
+ printk(KERN_ERR "%s(): cannot get GSC irq\n",
+ __FUNCTION__);
+ kfree(wax);
+ return -EBUSY;
+ }
+
+ wax->eim = ((u32) gsc_irq.txn_addr) | gsc_irq.txn_data;
+
+ ret = request_irq(gsc_irq.irq, gsc_asic_intr, 0, "wax", wax);
+ if (ret < 0) {
+ kfree(wax);
+ return ret;
+ }
+
+ /* enable IRQ's for devices below WAX */
+ gsc_writel(wax->eim, wax->hpa + OFFSET_IAR);
+
+ /* Done init'ing, register this driver */
+ ret = gsc_common_setup(dev, wax);
+ if (ret) {
+ kfree(wax);
+ return ret;
+ }
+
+ gsc_fixup_irqs(dev, wax, wax_choose_irq);
+ /* On 715-class machines, Wax EISA is a sibling of Wax, not a child. */
+ parent = parisc_parent(dev);
+ if (parent->id.hw_type != HPHW_IOA) {
+ gsc_fixup_irqs(parent, wax, 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,
+};

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