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Release 4.14 drivers/ide/macide.c

Directory: drivers/ide
/*
 *  Macintosh IDE Driver
 *
 *     Copyright (C) 1998 by Michael Schmitz
 *
 *  This driver was written based on information obtained from the MacOS IDE
 *  driver binary by Mikael Forselius
 *
 *  This file is subject to the terms and conditions of the GNU General Public
 *  License.  See the file COPYING in the main directory of this archive for
 *  more details.
 */

#include <linux/types.h>
#include <linux/mm.h>
#include <linux/interrupt.h>
#include <linux/blkdev.h>
#include <linux/delay.h>
#include <linux/ide.h>
#include <linux/module.h>

#include <asm/macintosh.h>
#include <asm/macints.h>
#include <asm/mac_baboon.h>


#define IDE_BASE 0x50F1A000	
/* Base address of IDE controller */

/*
 * Generic IDE registers as offsets from the base
 * These match MkLinux so they should be correct.
 */


#define IDE_CONTROL	0x38	
/* control/altstatus */

/*
 * Mac-specific registers
 */

/*
 * this register is odd; it doesn't seem to do much and it's
 * not word-aligned like virtually every other hardware register
 * on the Mac...
 */


#define IDE_IFR		0x101	
/* (0x101) IDE interrupt flags on Quadra:
                                 *
                                 * Bit 0+1: some interrupt flags
                                 * Bit 2+3: some interrupt enable
                                 * Bit 4:   ??
                                 * Bit 5:   IDE interrupt flag (any hwif)
                                 * Bit 6:   maybe IDE interrupt enable (any hwif) ??
                                 * Bit 7:   Any interrupt condition
                                 */


volatile unsigned char *ide_ifr = (unsigned char *) (IDE_BASE + IDE_IFR);


int macide_test_irq(ide_hwif_t *hwif) { if (*ide_ifr & 0x20) return 1; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Jens Axboe1463.64%133.33%
Sergei Shtylyov836.36%266.67%
Total22100.00%3100.00%


static void macide_clear_irq(ide_drive_t *drive) { *ide_ifr &= ~0x20; }

Contributors

PersonTokensPropCommitsCommitProp
Jens Axboe850.00%150.00%
Sergei Shtylyov850.00%150.00%
Total16100.00%2100.00%


static void __init macide_setup_ports(struct ide_hw *hw, unsigned long base, int irq) { int i; memset(hw, 0, sizeof(*hw)); for (i = 0; i < 8; i++) hw->io_ports_array[i] = base + i * 4; hw->io_ports.ctl_addr = base + IDE_CONTROL; hw->irq = irq; }

Contributors

PersonTokensPropCommitsCommitProp
Bartlomiej Zolnierkiewicz7597.40%375.00%
Geert Uytterhoeven22.60%125.00%
Total77100.00%4100.00%

static const struct ide_port_ops macide_port_ops = { .clear_irq = macide_clear_irq, .test_irq = macide_test_irq, }; static const struct ide_port_info macide_port_info = { .port_ops = &macide_port_ops, .host_flags = IDE_HFLAG_MMIO | IDE_HFLAG_NO_DMA, .irq_flags = IRQF_SHARED, .chipset = ide_generic, }; static const char *mac_ide_name[] = { "Quadra", "Powerbook", "Powerbook Baboon" }; /* * Probe for a Macintosh IDE interface */
static int __init macide_init(void) { unsigned long base; int irq; struct ide_hw hw, *hws[] = { &hw }; struct ide_port_info d = macide_port_info; if (!MACH_IS_MAC) return -ENODEV; switch (macintosh_config->ide_type) { case MAC_IDE_QUADRA: base = IDE_BASE; irq = IRQ_NUBUS_F; break; case MAC_IDE_PB: base = IDE_BASE; irq = IRQ_NUBUS_C; break; case MAC_IDE_BABOON: base = BABOON_BASE; d.port_ops = NULL; irq = IRQ_BABOON_1; break; default: return -ENODEV; } printk(KERN_INFO "ide: Macintosh %s IDE controller\n", mac_ide_name[macintosh_config->ide_type - 1]); macide_setup_ports(&hw, base, irq); return ide_host_add(&d, hws, 1, NULL); }

Contributors

PersonTokensPropCommitsCommitProp
Bartlomiej Zolnierkiewicz8259.85%1381.25%
Jens Axboe3324.09%16.25%
Sergei Shtylyov139.49%16.25%
Geert Uytterhoeven96.57%16.25%
Total137100.00%16100.00%

module_init(macide_init); MODULE_LICENSE("GPL");

Overall Contributors

PersonTokensPropCommitsCommitProp
Bartlomiej Zolnierkiewicz20351.65%1872.00%
Jens Axboe11830.03%14.00%
Sergei Shtylyov5313.49%28.00%
Geert Uytterhoeven112.80%28.00%
Adrian Bunk51.27%14.00%
Paul Gortmaker30.76%14.00%
Total393100.00%25100.00%
Directory: drivers/ide
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