1 files changed, 126 insertions, 0 deletions
diff --git a/drivers/parisc/asp.c b/drivers/parisc/asp.c
new file mode 100644
index 000000000..f55018e5c
--- /dev/null
+++ b/drivers/parisc/asp.c
@@ -0,0 +1,126 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *	ASP Device Driver
+ *
+ *	(c) Copyright 2000 The Puffin Group Inc.
+ *
+ *	by Helge Deller <deller@gmx.de>
+ */
+
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <asm/io.h>
+#include <asm/led.h>
+
+#include "gsc.h"
+
+#define ASP_GSC_IRQ	3		/* hardcoded interrupt for GSC */
+
+#define ASP_VER_OFFSET 	0x20		/* offset of ASP version */
+
+#define ASP_LED_ADDR	0xf0800020
+
+#define VIPER_INT_WORD  0xFFFBF088      /* addr of viper interrupt word */
+
+static struct gsc_asic asp;
+
+static void asp_choose_irq(struct parisc_device *dev, void *ctrl)
+{
+	int irq;
+
+	switch (dev->id.sversion) {
+	case 0x71:	irq =  9; break; /* SCSI */
+	case 0x72:	irq =  8; break; /* LAN */
+	case 0x73:	irq =  1; break; /* HIL */
+	case 0x74:	irq =  7; break; /* Centronics */
+	case 0x75:	irq = (dev->hw_path == 4) ? 5 : 6; break; /* RS232 */
+	case 0x76:	irq = 10; break; /* EISA BA */
+	case 0x77:	irq = 11; break; /* Graphics1 */
+	case 0x7a:	irq = 13; break; /* Audio (Bushmaster) */
+	case 0x7b:	irq = 13; break; /* Audio (Scorpio) */
+	case 0x7c:	irq =  3; break; /* FW SCSI */
+	case 0x7d:	irq =  4; break; /* FDDI */
+	case 0x7f:	irq = 13; break; /* Audio (Outfield) */
+	default:	return;		 /* Unknown */
+	}
+
+	gsc_asic_assign_irq(ctrl, irq, &dev->irq);
+
+	switch (dev->id.sversion) {
+	case 0x73:	irq =  2; break; /* i8042 High-priority */
+	case 0x76:	irq =  0; break; /* EISA BA */
+	default:	return;		 /* Other */
+	}
+
+	gsc_asic_assign_irq(ctrl, irq, &dev->aux_irq);
+}
+
+/* There are two register ranges we're interested in.  Interrupt /
+ * Status / LED are at 0xf080xxxx and Asp special registers are at
+ * 0xf082fxxx.  PDC only tells us that Asp is at 0xf082f000, so for
+ * the purposes of interrupt handling, we have to tell other bits of
+ * the kernel to look at the other registers.
+ */
+#define ASP_INTERRUPT_ADDR 0xf0800000
+
+static int __init asp_init_chip(struct parisc_device *dev)
+{
+	struct gsc_irq gsc_irq;
+	int ret;
+
+	asp.version = gsc_readb(dev->hpa.start + ASP_VER_OFFSET) & 0xf;
+	asp.name = (asp.version == 1) ? "Asp" : "Cutoff";
+	asp.hpa = ASP_INTERRUPT_ADDR;
+
+	printk(KERN_INFO "%s version %d at 0x%lx found.\n", 
+		asp.name, asp.version, (unsigned long)dev->hpa.start);
+
+	/* the IRQ ASP should use */
+	ret = -EBUSY;
+	dev->irq = gsc_claim_irq(&gsc_irq, ASP_GSC_IRQ);
+	if (dev->irq < 0) {
+		printk(KERN_ERR "%s(): cannot get GSC irq\n", __func__);
+		goto out;
+	}
+
+	asp.eim = ((u32) gsc_irq.txn_addr) | gsc_irq.txn_data;
+
+	ret = request_irq(gsc_irq.irq, gsc_asic_intr, 0, "asp", &asp);
+	if (ret < 0)
+		goto out;
+
+	/* Program VIPER to interrupt on the ASP irq */
+	gsc_writel((1 << (31 - ASP_GSC_IRQ)),VIPER_INT_WORD);
+
+	/* Done init'ing, register this driver */
+	ret = gsc_common_setup(dev, &asp);
+	if (ret)
+		goto out;
+
+	gsc_fixup_irqs(dev, &asp, asp_choose_irq);
+	/* Mongoose is a sibling of Asp, not a child... */
+	gsc_fixup_irqs(parisc_parent(dev), &asp, asp_choose_irq);
+
+	/* initialize the chassis LEDs */ 
+#ifdef CONFIG_CHASSIS_LCD_LED	
+	register_led_driver(DISPLAY_MODEL_OLD_ASP, LED_CMD_REG_NONE, 
+		    ASP_LED_ADDR);
+#endif
+
+ out:
+	return ret;
+}
+
+static const struct parisc_device_id asp_tbl[] __initconst = {
+	{ HPHW_BA, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00070 },
+	{ 0, }
+};
+
+struct parisc_driver asp_driver __refdata = {
+	.name =		"asp",
+	.id_table =	asp_tbl,
+	.probe =	asp_init_chip,
+};