^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * ASP Device Driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * (c) Copyright 2000 The Puffin Group Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * by Helge Deller <deller@gmx.de>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <asm/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <asm/led.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include "gsc.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define ASP_GSC_IRQ 3 /* hardcoded interrupt for GSC */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define ASP_VER_OFFSET 0x20 /* offset of ASP version */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define ASP_LED_ADDR 0xf0800020
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define VIPER_INT_WORD 0xFFFBF088 /* addr of viper interrupt word */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) static struct gsc_asic asp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) static void asp_choose_irq(struct parisc_device *dev, void *ctrl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) int irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) switch (dev->id.sversion) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) case 0x71: irq = 9; break; /* SCSI */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) case 0x72: irq = 8; break; /* LAN */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) case 0x73: irq = 1; break; /* HIL */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) case 0x74: irq = 7; break; /* Centronics */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) case 0x75: irq = (dev->hw_path == 4) ? 5 : 6; break; /* RS232 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) case 0x76: irq = 10; break; /* EISA BA */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) case 0x77: irq = 11; break; /* Graphics1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) case 0x7a: irq = 13; break; /* Audio (Bushmaster) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) case 0x7b: irq = 13; break; /* Audio (Scorpio) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) case 0x7c: irq = 3; break; /* FW SCSI */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) case 0x7d: irq = 4; break; /* FDDI */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) case 0x7f: irq = 13; break; /* Audio (Outfield) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) default: return; /* Unknown */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) gsc_asic_assign_irq(ctrl, irq, &dev->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) switch (dev->id.sversion) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) case 0x73: irq = 2; break; /* i8042 High-priority */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) case 0x76: irq = 0; break; /* EISA BA */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) default: return; /* Other */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) gsc_asic_assign_irq(ctrl, irq, &dev->aux_irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) /* There are two register ranges we're interested in. Interrupt /
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) * Status / LED are at 0xf080xxxx and Asp special registers are at
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) * 0xf082fxxx. PDC only tells us that Asp is at 0xf082f000, so for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) * the purposes of interrupt handling, we have to tell other bits of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) * the kernel to look at the other registers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) #define ASP_INTERRUPT_ADDR 0xf0800000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) static int __init asp_init_chip(struct parisc_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) struct gsc_irq gsc_irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) asp.version = gsc_readb(dev->hpa.start + ASP_VER_OFFSET) & 0xf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) asp.name = (asp.version == 1) ? "Asp" : "Cutoff";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) asp.hpa = ASP_INTERRUPT_ADDR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) printk(KERN_INFO "%s version %d at 0x%lx found.\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) asp.name, asp.version, (unsigned long)dev->hpa.start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) /* the IRQ ASP should use */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) ret = -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) dev->irq = gsc_claim_irq(&gsc_irq, ASP_GSC_IRQ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) if (dev->irq < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) printk(KERN_ERR "%s(): cannot get GSC irq\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) asp.eim = ((u32) gsc_irq.txn_addr) | gsc_irq.txn_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) ret = request_irq(gsc_irq.irq, gsc_asic_intr, 0, "asp", &asp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) /* Program VIPER to interrupt on the ASP irq */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) gsc_writel((1 << (31 - ASP_GSC_IRQ)),VIPER_INT_WORD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) /* Done init'ing, register this driver */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) ret = gsc_common_setup(dev, &asp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) gsc_fixup_irqs(dev, &asp, asp_choose_irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) /* Mongoose is a sibling of Asp, not a child... */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) gsc_fixup_irqs(parisc_parent(dev), &asp, asp_choose_irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) /* initialize the chassis LEDs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) #ifdef CONFIG_CHASSIS_LCD_LED
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) register_led_driver(DISPLAY_MODEL_OLD_ASP, LED_CMD_REG_NONE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) ASP_LED_ADDR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) static const struct parisc_device_id asp_tbl[] __initconst = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) { HPHW_BA, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00070 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) { 0, }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) struct parisc_driver asp_driver __refdata = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) .name = "asp",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) .id_table = asp_tbl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) .probe = asp_init_chip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) };
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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