^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * Macintosh IDE Driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright (C) 1998 by Michael Schmitz
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * This driver was written based on information obtained from the MacOS IDE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * driver binary by Mikael Forselius
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * This file is subject to the terms and conditions of the GNU General Public
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * License. See the file COPYING in the main directory of this archive for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^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 <linux/mm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/blkdev.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/ide.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <asm/macintosh.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define DRV_NAME "mac_ide"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #define IDE_BASE 0x50F1A000 /* Base address of IDE controller */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * Generic IDE registers as offsets from the base
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * These match MkLinux so they should be correct.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define IDE_CONTROL 0x38 /* control/altstatus */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) * Mac-specific registers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) * this register is odd; it doesn't seem to do much and it's
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) * not word-aligned like virtually every other hardware register
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) * on the Mac...
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #define IDE_IFR 0x101 /* (0x101) IDE interrupt flags on Quadra:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) * Bit 0+1: some interrupt flags
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) * Bit 2+3: some interrupt enable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) * Bit 4: ??
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) * Bit 5: IDE interrupt flag (any hwif)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) * Bit 6: maybe IDE interrupt enable (any hwif) ??
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) * Bit 7: Any interrupt condition
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) volatile unsigned char *ide_ifr = (unsigned char *) (IDE_BASE + IDE_IFR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) int macide_test_irq(ide_hwif_t *hwif)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) if (*ide_ifr & 0x20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) static void macide_clear_irq(ide_drive_t *drive)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) *ide_ifr &= ~0x20;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) static void __init macide_setup_ports(struct ide_hw *hw, unsigned long base,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) int irq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) memset(hw, 0, sizeof(*hw));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) for (i = 0; i < 8; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) hw->io_ports_array[i] = base + i * 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) hw->io_ports.ctl_addr = base + IDE_CONTROL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) hw->irq = irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) static const struct ide_port_ops macide_port_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) .clear_irq = macide_clear_irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) .test_irq = macide_test_irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) static const struct ide_port_info macide_port_info = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) .port_ops = &macide_port_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) .host_flags = IDE_HFLAG_MMIO | IDE_HFLAG_NO_DMA,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) .irq_flags = IRQF_SHARED,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) .chipset = ide_generic,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) static const char *mac_ide_name[] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) { "Quadra", "Powerbook", "Powerbook Baboon" };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) * Probe for a Macintosh IDE interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) static int mac_ide_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) struct resource *mem, *irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) struct ide_hw hw, *hws[] = { &hw };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) struct ide_port_info d = macide_port_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) struct ide_host *host;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) if (!MACH_IS_MAC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) if (!mem)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) if (!irq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) if (!devm_request_mem_region(&pdev->dev, mem->start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) resource_size(mem), DRV_NAME)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) dev_err(&pdev->dev, "resources busy\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) printk(KERN_INFO "ide: Macintosh %s IDE controller\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) mac_ide_name[macintosh_config->ide_type - 1]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) macide_setup_ports(&hw, mem->start, irq->start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) rc = ide_host_add(&d, hws, 1, &host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) platform_set_drvdata(pdev, host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) static int mac_ide_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) struct ide_host *host = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) ide_host_remove(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) static struct platform_driver mac_ide_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) .name = DRV_NAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) .probe = mac_ide_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) .remove = mac_ide_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) module_platform_driver(mac_ide_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) MODULE_ALIAS("platform:" DRV_NAME);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
3 Commits
0 Branches
0 Tags