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Release 4.14 drivers/ide/q40ide.c

Directory: drivers/ide
/*
 *  Q40 I/O port IDE Driver
 *
 *     (c) Richard Zidlicky
 *
 *  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/ide.h>
#include <linux/module.h>

#include <asm/ide.h>

    /*
     *  Bases of the IDE interfaces
     */


#define Q40IDE_NUM_HWIFS	2


#define PCIDE_BASE1	0x1f0

#define PCIDE_BASE2	0x170

#define PCIDE_BASE3	0x1e8

#define PCIDE_BASE4	0x168

#define PCIDE_BASE5	0x1e0

#define PCIDE_BASE6	0x160


static const unsigned long pcide_bases[Q40IDE_NUM_HWIFS] = {
    PCIDE_BASE1, PCIDE_BASE2, /* PCIDE_BASE3, PCIDE_BASE4  , PCIDE_BASE5,
    PCIDE_BASE6 */
};


static int q40ide_default_irq(unsigned long base) { switch (base) { case 0x1f0: return 14; case 0x170: return 15; case 0x1e8: return 11; default: return 0; } }

Contributors

PersonTokensPropCommitsCommitProp
Jens Axboe3694.74%150.00%
Geert Uytterhoeven25.26%150.00%
Total38100.00%2100.00%

/* * Addresses are pretranslated for Q40 ISA access. */
static void q40_ide_setup_ports(struct ide_hw *hw, unsigned long base, int irq) { memset(hw, 0, sizeof(*hw)); /* BIG FAT WARNING: assumption: only DATA port is ever used in 16 bit mode */ hw->io_ports.data_addr = Q40_ISA_IO_W(base); hw->io_ports.error_addr = Q40_ISA_IO_B(base + 1); hw->io_ports.nsect_addr = Q40_ISA_IO_B(base + 2); hw->io_ports.lbal_addr = Q40_ISA_IO_B(base + 3); hw->io_ports.lbam_addr = Q40_ISA_IO_B(base + 4); hw->io_ports.lbah_addr = Q40_ISA_IO_B(base + 5); hw->io_ports.device_addr = Q40_ISA_IO_B(base + 6); hw->io_ports.status_addr = Q40_ISA_IO_B(base + 7); hw->io_ports.ctl_addr = Q40_ISA_IO_B(base + 0x206); hw->irq = irq; }

Contributors

PersonTokensPropCommitsCommitProp
Al Viro9964.71%125.00%
Geert Uytterhoeven3925.49%125.00%
Roman Zippel117.19%125.00%
Bartlomiej Zolnierkiewicz42.61%125.00%
Total153100.00%4100.00%


static void q40ide_input_data(ide_drive_t *drive, struct ide_cmd *cmd, void *buf, unsigned int len) { unsigned long data_addr = drive->hwif->io_ports.data_addr; if (drive->media == ide_disk && cmd && (cmd->tf_flags & IDE_TFLAG_FS)) { __ide_mm_insw(data_addr, buf, (len + 1) / 2); return; } raw_insw_swapw((u16 *)data_addr, buf, (len + 1) / 2); }

Contributors

PersonTokensPropCommitsCommitProp
Bartlomiej Zolnierkiewicz8594.44%480.00%
Geert Uytterhoeven55.56%120.00%
Total90100.00%5100.00%


static void q40ide_output_data(ide_drive_t *drive, struct ide_cmd *cmd, void *buf, unsigned int len) { unsigned long data_addr = drive->hwif->io_ports.data_addr; if (drive->media == ide_disk && cmd && (cmd->tf_flags & IDE_TFLAG_FS)) { __ide_mm_outsw(data_addr, buf, (len + 1) / 2); return; } raw_outsw_swapw((u16 *)data_addr, buf, (len + 1) / 2); }

Contributors

PersonTokensPropCommitsCommitProp
Bartlomiej Zolnierkiewicz8594.44%480.00%
Geert Uytterhoeven55.56%120.00%
Total90100.00%5100.00%

/* Q40 has a byte-swapped IDE interface */ static const struct ide_tp_ops q40ide_tp_ops = { .exec_command = ide_exec_command, .read_status = ide_read_status, .read_altstatus = ide_read_altstatus, .write_devctl = ide_write_devctl, .dev_select = ide_dev_select, .tf_load = ide_tf_load, .tf_read = ide_tf_read, .input_data = q40ide_input_data, .output_data = q40ide_output_data, }; static const struct ide_port_info q40ide_port_info = { .tp_ops = &q40ide_tp_ops, .host_flags = IDE_HFLAG_MMIO | IDE_HFLAG_NO_DMA, .irq_flags = IRQF_SHARED, .chipset = ide_generic, }; /* * the static array is needed to have the name reported in /proc/ioports, * hwif->name unfortunately isn't available yet */ static const char *q40_ide_names[Q40IDE_NUM_HWIFS]={ "ide0", "ide1" }; /* * Probe for Q40 IDE interfaces */
static int __init q40ide_init(void) { int i; struct ide_hw hw[Q40IDE_NUM_HWIFS], *hws[] = { NULL, NULL }; if (!MACH_IS_Q40) return -ENODEV; printk(KERN_INFO "ide: Q40 IDE controller\n"); for (i = 0; i < Q40IDE_NUM_HWIFS; i++) { const char *name = q40_ide_names[i]; if (!request_region(pcide_bases[i], 8, name)) { printk("could not reserve ports %lx-%lx for %s\n", pcide_bases[i],pcide_bases[i]+8,name); continue; } if (!request_region(pcide_bases[i]+0x206, 1, name)) { printk("could not reserve port %lx for %s\n", pcide_bases[i]+0x206,name); release_region(pcide_bases[i], 8); continue; } q40_ide_setup_ports(&hw[i], pcide_bases[i], q40ide_default_irq(pcide_bases[i])); hws[i] = &hw[i]; } return ide_host_add(&q40ide_port_info, hws, Q40IDE_NUM_HWIFS, NULL); }

Contributors

PersonTokensPropCommitsCommitProp
Geert Uytterhoeven8945.41%17.69%
Bartlomiej Zolnierkiewicz6231.63%1184.62%
Jens Axboe4522.96%17.69%
Total196100.00%13100.00%

module_init(q40ide_init); MODULE_LICENSE("GPL");

Overall Contributors

PersonTokensPropCommitsCommitProp
Bartlomiej Zolnierkiewicz32142.91%2167.74%
Geert Uytterhoeven16121.52%26.45%
Jens Axboe14018.72%13.23%
Al Viro9913.24%13.23%
Roman Zippel111.47%13.23%
Sergei Shtylyov70.94%26.45%
Adrian Bunk50.67%13.23%
Paul Gortmaker30.40%13.23%
Jan Engelhardt10.13%13.23%
Total748100.00%31100.00%
Directory: drivers/ide
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