2874c5fd28426 (Thomas Gleixner 2019-05-27 08:55:01 +0200 1) // SPDX-License-Identifier: GPL-2.0-or-later
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 2) /*
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 3) * ASP Device Driver
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 4) *
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 5) * (c) Copyright 2000 The Puffin Group Inc.
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 6) *
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 7) * by Helge Deller <deller@gmx.de>
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 8) */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 9)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 10) #include <linux/errno.h>
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 11) #include <linux/init.h>
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 12) #include <linux/interrupt.h>
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 13) #include <linux/module.h>
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 14) #include <linux/types.h>
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 15) #include <asm/io.h>
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 16) #include <asm/led.h>
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 17)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 18) #include "gsc.h"
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 19)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 20) #define ASP_GSC_IRQ 3 /* hardcoded interrupt for GSC */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 21)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 22) #define ASP_VER_OFFSET 0x20 /* offset of ASP version */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 23)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 24) #define ASP_LED_ADDR 0xf0800020
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 25)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 26) #define VIPER_INT_WORD 0xFFFBF088 /* addr of viper interrupt word */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 27)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 28) static struct gsc_asic asp;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 29)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 30) static void asp_choose_irq(struct parisc_device *dev, void *ctrl)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 31) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 32) int irq;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 33)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 34) switch (dev->id.sversion) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 35) case 0x71: irq = 9; break; /* SCSI */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 36) case 0x72: irq = 8; break; /* LAN */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 37) case 0x73: irq = 1; break; /* HIL */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 38) case 0x74: irq = 7; break; /* Centronics */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 39) case 0x75: irq = (dev->hw_path == 4) ? 5 : 6; break; /* RS232 */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 40) case 0x76: irq = 10; break; /* EISA BA */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 41) case 0x77: irq = 11; break; /* Graphics1 */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 42) case 0x7a: irq = 13; break; /* Audio (Bushmaster) */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 43) case 0x7b: irq = 13; break; /* Audio (Scorpio) */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 44) case 0x7c: irq = 3; break; /* FW SCSI */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 45) case 0x7d: irq = 4; break; /* FDDI */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 46) case 0x7f: irq = 13; break; /* Audio (Outfield) */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 47) default: return; /* Unknown */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 48) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 49)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 50) gsc_asic_assign_irq(ctrl, irq, &dev->irq);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 51)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 52) switch (dev->id.sversion) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 53) case 0x73: irq = 2; break; /* i8042 High-priority */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 54) case 0x76: irq = 0; break; /* EISA BA */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 55) default: return; /* Other */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 56) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 57)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 58) gsc_asic_assign_irq(ctrl, irq, &dev->aux_irq);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 59) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 60)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 61) /* There are two register ranges we're interested in. Interrupt /
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 62) * Status / LED are at 0xf080xxxx and Asp special registers are at
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 63) * 0xf082fxxx. PDC only tells us that Asp is at 0xf082f000, so for
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 64) * the purposes of interrupt handling, we have to tell other bits of
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 65) * the kernel to look at the other registers.
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 66) */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 67) #define ASP_INTERRUPT_ADDR 0xf0800000
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 68)
df8e5bc6b7b61 (Adrian Bunk 2008-12-02 03:28:16 +0000 69) static int __init asp_init_chip(struct parisc_device *dev)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 70) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 71) struct gsc_irq gsc_irq;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 72) int ret;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 73)
53f01bba49938 (Matthew Wilcox 2005-10-21 22:36:40 -0400 74) asp.version = gsc_readb(dev->hpa.start + ASP_VER_OFFSET) & 0xf;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 75) asp.name = (asp.version == 1) ? "Asp" : "Cutoff";
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 76) asp.hpa = ASP_INTERRUPT_ADDR;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 77)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 78) printk(KERN_INFO "%s version %d at 0x%lx found.\n",
c18b4608958ff (Alexander Beregalov 2009-03-19 10:54:07 +0000 79) asp.name, asp.version, (unsigned long)dev->hpa.start);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 80)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 81) /* the IRQ ASP should use */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 82) ret = -EBUSY;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 83) dev->irq = gsc_claim_irq(&gsc_irq, ASP_GSC_IRQ);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 84) if (dev->irq < 0) {
a8043ecb17bd2 (Harvey Harrison 2008-05-14 16:21:56 -0700 85) printk(KERN_ERR "%s(): cannot get GSC irq\n", __func__);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 86) goto out;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 87) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 88)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 89) asp.eim = ((u32) gsc_irq.txn_addr) | gsc_irq.txn_data;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 90)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 91) ret = request_irq(gsc_irq.irq, gsc_asic_intr, 0, "asp", &asp);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 92) if (ret < 0)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 93) goto out;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 94)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 95) /* Program VIPER to interrupt on the ASP irq */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 96) gsc_writel((1 << (31 - ASP_GSC_IRQ)),VIPER_INT_WORD);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 97)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 98) /* Done init'ing, register this driver */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 99) ret = gsc_common_setup(dev, &asp);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 100) if (ret)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 101) goto out;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 102)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 103) gsc_fixup_irqs(dev, &asp, asp_choose_irq);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 104) /* Mongoose is a sibling of Asp, not a child... */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 105) gsc_fixup_irqs(parisc_parent(dev), &asp, asp_choose_irq);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 106)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 107) /* initialize the chassis LEDs */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 108) #ifdef CONFIG_CHASSIS_LCD_LED
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 109) register_led_driver(DISPLAY_MODEL_OLD_ASP, LED_CMD_REG_NONE,
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 110) ASP_LED_ADDR);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 111) #endif
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 112)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 113) out:
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 114) return ret;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 115) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 116)
cfe4fbfb23b32 (Helge Deller 2017-08-21 22:02:19 +0200 117) static const struct parisc_device_id asp_tbl[] __initconst = {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 118) { HPHW_BA, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00070 },
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 119) { 0, }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 120) };
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 121)
cfe4fbfb23b32 (Helge Deller 2017-08-21 22:02:19 +0200 122) struct parisc_driver asp_driver __refdata = {
bdad1f836ab1c (Matthew Wilcox 2005-10-21 22:36:23 -0400 123) .name = "asp",
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 124) .id_table = asp_tbl,
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 125) .probe = asp_init_chip,
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 126) };
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