Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / parisc / wax.c

diff --git a/kernel/drivers/parisc/wax.c b/kernel/drivers/parisc/wax.c
new file mode 100644 (file)
index 0000000..da9d5ad
--- /dev/null
+++ b/kernel/drivers/parisc/wax.c
@@ -0,0 +1,139 @@
+/*
+ *     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 */
+}
+
+static 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 = kzalloc(sizeof(*wax), GFP_KERNEL);
+       if (!wax)
+               return -ENOMEM;
+
+       wax->name = "wax";
+       wax->hpa = dev->hpa.start;
+
+       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",
+                               __func__);
+               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,
+};