// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 1994-1998 Linus Torvalds & authors (see below) * Copyright (C) 2005, 2007 Bartlomiej Zolnierkiewicz */ /* * Mostly written by Mark Lord <mlord@pobox.com> * and Gadi Oxman <gadio@netvision.net.il> * and Andre Hedrick <andre@linux-ide.org> * * See linux/MAINTAINERS for address of current maintainer. * * This is the IDE probe module, as evolved from hd.c and ide.c. * * -- increase WAIT_PIDENTIFY to avoid CD-ROM locking at boot * by Andrea Arcangeli */ #include <linux/module.h> #include <linux/types.h> #include <linux/string.h> #include <linux/kernel.h> #include <linux/timer.h> #include <linux/mm.h> #include <linux/interrupt.h> #include <linux/major.h> #include <linux/errno.h> #include <linux/genhd.h> #include <linux/slab.h> #include <linux/delay.h> #include <linux/ide.h> #include <linux/spinlock.h> #include <linux/kmod.h> #include <linux/pci.h> #include <linux/scatterlist.h> #include <asm/byteorder.h> #include <asm/irq.h> #include <linux/uaccess.h> #include <asm/io.h> /** * generic_id - add a generic drive id * @drive: drive to make an ID block for * * Add a fake id field to the drive we are passed. This allows * use to skip a ton of NULL checks (which people always miss) * and make drive properties unconditional outside of this file */ static void generic_id(ide_drive_t *drive) { <------>u16 *id = drive->id; <------>id[ATA_ID_CUR_CYLS] = id[ATA_ID_CYLS] = drive->cyl; <------>id[ATA_ID_CUR_HEADS] = id[ATA_ID_HEADS] = drive->head; <------>id[ATA_ID_CUR_SECTORS] = id[ATA_ID_SECTORS] = drive->sect; } static void ide_disk_init_chs(ide_drive_t *drive) { <------>u16 *id = drive->id; <------>/* Extract geometry if we did not already have one for the drive */ <------>if (!drive->cyl || !drive->head || !drive->sect) { <------><------>drive->cyl = drive->bios_cyl = id[ATA_ID_CYLS]; <------><------>drive->head = drive->bios_head = id[ATA_ID_HEADS]; <------><------>drive->sect = drive->bios_sect = id[ATA_ID_SECTORS]; <------>} <------>/* Handle logical geometry translation by the drive */ <------>if (ata_id_current_chs_valid(id)) { <------><------>drive->cyl = id[ATA_ID_CUR_CYLS]; <------><------>drive->head = id[ATA_ID_CUR_HEADS]; <------><------>drive->sect = id[ATA_ID_CUR_SECTORS]; <------>} <------>/* Use physical geometry if what we have still makes no sense */ <------>if (drive->head > 16 && id[ATA_ID_HEADS] && id[ATA_ID_HEADS] <= 16) { <------><------>drive->cyl = id[ATA_ID_CYLS]; <------><------>drive->head = id[ATA_ID_HEADS]; <------><------>drive->sect = id[ATA_ID_SECTORS]; <------>} } static void ide_disk_init_mult_count(ide_drive_t *drive) { <------>u16 *id = drive->id; <------>u8 max_multsect = id[ATA_ID_MAX_MULTSECT] & 0xff; <------>if (max_multsect) { <------><------>if ((max_multsect / 2) > 1) <------><------><------>id[ATA_ID_MULTSECT] = max_multsect | 0x100; <------><------>else <------><------><------>id[ATA_ID_MULTSECT] &= ~0x1ff; <------><------>drive->mult_req = id[ATA_ID_MULTSECT] & 0xff; <------><------>if (drive->mult_req) <------><------><------>drive->special_flags |= IDE_SFLAG_SET_MULTMODE; <------>} } static void ide_classify_ata_dev(ide_drive_t *drive) { <------>u16 *id = drive->id; <------>char *m = (char *)&id[ATA_ID_PROD]; <------>int is_cfa = ata_id_is_cfa(id); <------>/* CF devices are *not* removable in Linux definition of the term */ <------>if (is_cfa == 0 && (id[ATA_ID_CONFIG] & (1 << 7))) <------><------>drive->dev_flags |= IDE_DFLAG_REMOVABLE; <------>drive->media = ide_disk; <------>if (!ata_id_has_unload(drive->id)) <------><------>drive->dev_flags |= IDE_DFLAG_NO_UNLOAD; <------>printk(KERN_INFO "%s: %s, %s DISK drive\n", drive->name, m, <------><------>is_cfa ? "CFA" : "ATA"); } static void ide_classify_atapi_dev(ide_drive_t *drive) { <------>u16 *id = drive->id; <------>char *m = (char *)&id[ATA_ID_PROD]; <------>u8 type = (id[ATA_ID_CONFIG] >> 8) & 0x1f; <------>printk(KERN_INFO "%s: %s, ATAPI ", drive->name, m); <------>switch (type) { <------>case ide_floppy: <------><------>if (!strstr(m, "CD-ROM")) { <------><------><------>if (!strstr(m, "oppy") && <------><------><------> !strstr(m, "poyp") && <------><------><------> !strstr(m, "ZIP")) <------><------><------><------>printk(KERN_CONT "cdrom or floppy?, assuming "); <------><------><------>if (drive->media != ide_cdrom) { <------><------><------><------>printk(KERN_CONT "FLOPPY"); <------><------><------><------>drive->dev_flags |= IDE_DFLAG_REMOVABLE; <------><------><------><------>break; <------><------><------>} <------><------>} <------><------>/* Early cdrom models used zero */ <------><------>type = ide_cdrom; <------><------>fallthrough; <------>case ide_cdrom: <------><------>drive->dev_flags |= IDE_DFLAG_REMOVABLE; #ifdef CONFIG_PPC <------><------>/* kludge for Apple PowerBook internal zip */ <------><------>if (!strstr(m, "CD-ROM") && strstr(m, "ZIP")) { <------><------><------>printk(KERN_CONT "FLOPPY"); <------><------><------>type = ide_floppy; <------><------><------>break; <------><------>} #endif <------><------>printk(KERN_CONT "CD/DVD-ROM"); <------><------>break; <------>case ide_tape: <------><------>printk(KERN_CONT "TAPE"); <------><------>break; <------>case ide_optical: <------><------>printk(KERN_CONT "OPTICAL"); <------><------>drive->dev_flags |= IDE_DFLAG_REMOVABLE; <------><------>break; <------>default: <------><------>printk(KERN_CONT "UNKNOWN (type %d)", type); <------><------>break; <------>} <------>printk(KERN_CONT " drive\n"); <------>drive->media = type; <------>/* an ATAPI device ignores DRDY */ <------>drive->ready_stat = 0; <------>if (ata_id_cdb_intr(id)) <------><------>drive->atapi_flags |= IDE_AFLAG_DRQ_INTERRUPT; <------>drive->dev_flags |= IDE_DFLAG_DOORLOCKING; <------>/* we don't do head unloading on ATAPI devices */ <------>drive->dev_flags |= IDE_DFLAG_NO_UNLOAD; } /** * do_identify - identify a drive * @drive: drive to identify * @cmd: command used * @id: buffer for IDENTIFY data * * Called when we have issued a drive identify command to * read and parse the results. This function is run with * interrupts disabled. */ static void do_identify(ide_drive_t *drive, u8 cmd, u16 *id) { <------>ide_hwif_t *hwif = drive->hwif; <------>char *m = (char *)&id[ATA_ID_PROD]; <------>unsigned long flags; <------>int bswap = 1; <------>/* local CPU only; some systems need this */ <------>local_irq_save(flags); <------>/* read 512 bytes of id info */ <------>hwif->tp_ops->input_data(drive, NULL, id, SECTOR_SIZE); <------>local_irq_restore(flags); <------>drive->dev_flags |= IDE_DFLAG_ID_READ; #ifdef DEBUG <------>printk(KERN_INFO "%s: dumping identify data\n", drive->name); <------>ide_dump_identify((u8 *)id); #endif <------>ide_fix_driveid(id); <------>/* <------> * ATA_CMD_ID_ATA returns little-endian info, <------> * ATA_CMD_ID_ATAPI *usually* returns little-endian info. <------> */ <------>if (cmd == ATA_CMD_ID_ATAPI) { <------><------>if ((m[0] == 'N' && m[1] == 'E') || /* NEC */ <------><------> (m[0] == 'F' && m[1] == 'X') || /* Mitsumi */ <------><------> (m[0] == 'P' && m[1] == 'i')) /* Pioneer */ <------><------><------>/* Vertos drives may still be weird */ <------><------><------>bswap ^= 1; <------>} <------>ide_fixstring(m, ATA_ID_PROD_LEN, bswap); <------>ide_fixstring((char *)&id[ATA_ID_FW_REV], ATA_ID_FW_REV_LEN, bswap); <------>ide_fixstring((char *)&id[ATA_ID_SERNO], ATA_ID_SERNO_LEN, bswap); <------>/* we depend on this a lot! */ <------>m[ATA_ID_PROD_LEN - 1] = '\0'; <------>if (strstr(m, "E X A B Y T E N E S T")) <------><------>drive->dev_flags &= ~IDE_DFLAG_PRESENT; <------>else <------><------>drive->dev_flags |= IDE_DFLAG_PRESENT; } /** * ide_dev_read_id - send ATA/ATAPI IDENTIFY command * @drive: drive to identify * @cmd: command to use * @id: buffer for IDENTIFY data * @irq_ctx: flag set when called from the IRQ context * * Sends an ATA(PI) IDENTIFY request to a drive and waits for a response. * * Returns: 0 device was identified * 1 device timed-out (no response to identify request) * 2 device aborted the command (refused to identify itself) */ int ide_dev_read_id(ide_drive_t *drive, u8 cmd, u16 *id, int irq_ctx) { <------>ide_hwif_t *hwif = drive->hwif; <------>struct ide_io_ports *io_ports = &hwif->io_ports; <------>const struct ide_tp_ops *tp_ops = hwif->tp_ops; <------>int use_altstatus = 0, rc; <------>unsigned long timeout; <------>u8 s = 0, a = 0; <------>/* <------> * Disable device IRQ. Otherwise we'll get spurious interrupts <------> * during the identify phase that the IRQ handler isn't expecting. <------> */ <------>if (io_ports->ctl_addr) <------><------>tp_ops->write_devctl(hwif, ATA_NIEN | ATA_DEVCTL_OBS); <------>/* take a deep breath */ <------>if (irq_ctx) <------><------>mdelay(50); <------>else <------><------>msleep(50); <------>if (io_ports->ctl_addr && <------> (hwif->host_flags & IDE_HFLAG_BROKEN_ALTSTATUS) == 0) { <------><------>a = tp_ops->read_altstatus(hwif); <------><------>s = tp_ops->read_status(hwif); <------><------>if ((a ^ s) & ~ATA_SENSE) <------><------><------>/* ancient Seagate drives, broken interfaces */ <------><------><------>printk(KERN_INFO "%s: probing with STATUS(0x%02x) " <------><------><------><------><------> "instead of ALTSTATUS(0x%02x)\n", <------><------><------><------><------> drive->name, s, a); <------><------>else <------><------><------>/* use non-intrusive polling */ <------><------><------>use_altstatus = 1; <------>} <------>/* set features register for atapi <------> * identify command to be sure of reply <------> */ <------>if (cmd == ATA_CMD_ID_ATAPI) { <------><------>struct ide_taskfile tf; <------><------>memset(&tf, 0, sizeof(tf)); <------><------>/* disable DMA & overlap */ <------><------>tp_ops->tf_load(drive, &tf, IDE_VALID_FEATURE); <------>} <------>/* ask drive for ID */ <------>tp_ops->exec_command(hwif, cmd); <------>timeout = ((cmd == ATA_CMD_ID_ATA) ? WAIT_WORSTCASE : WAIT_PIDENTIFY) / 2; <------>/* wait for IRQ and ATA_DRQ */ <------>if (irq_ctx) { <------><------>rc = __ide_wait_stat(drive, ATA_DRQ, BAD_R_STAT, timeout, &s); <------><------>if (rc) <------><------><------>return 1; <------>} else { <------><------>rc = ide_busy_sleep(drive, timeout, use_altstatus); <------><------>if (rc) <------><------><------>return 1; <------><------>msleep(50); <------><------>s = tp_ops->read_status(hwif); <------>} <------>if (OK_STAT(s, ATA_DRQ, BAD_R_STAT)) { <------><------>/* drive returned ID */ <------><------>do_identify(drive, cmd, id); <------><------>/* drive responded with ID */ <------><------>rc = 0; <------><------>/* clear drive IRQ */ <------><------>(void)tp_ops->read_status(hwif); <------>} else { <------><------>/* drive refused ID */ <------><------>rc = 2; <------>} <------>return rc; } int ide_busy_sleep(ide_drive_t *drive, unsigned long timeout, int altstatus) { <------>ide_hwif_t *hwif = drive->hwif; <------>u8 stat; <------>timeout += jiffies; <------>do { <------><------>msleep(50); /* give drive a breather */ <------><------>stat = altstatus ? hwif->tp_ops->read_altstatus(hwif) <------><------><------><------> : hwif->tp_ops->read_status(hwif); <------><------>if ((stat & ATA_BUSY) == 0) <------><------><------>return 0; <------>} while (time_before(jiffies, timeout)); <------>printk(KERN_ERR "%s: timeout in %s\n", drive->name, __func__); <------>return 1; /* drive timed-out */ } static u8 ide_read_device(ide_drive_t *drive) { <------>struct ide_taskfile tf; <------>drive->hwif->tp_ops->tf_read(drive, &tf, IDE_VALID_DEVICE); <------>return tf.device; } /** * do_probe - probe an IDE device * @drive: drive to probe * @cmd: command to use * * do_probe() has the difficult job of finding a drive if it exists, * without getting hung up if it doesn't exist, without trampling on * ethernet cards, and without leaving any IRQs dangling to haunt us later. * * If a drive is "known" to exist (from CMOS or kernel parameters), * but does not respond right away, the probe will "hang in there" * for the maximum wait time (about 30 seconds), otherwise it will * exit much more quickly. * * Returns: 0 device was identified * 1 device timed-out (no response to identify request) * 2 device aborted the command (refused to identify itself) * 3 bad status from device (possible for ATAPI drives) * 4 probe was not attempted because failure was obvious */ static int do_probe (ide_drive_t *drive, u8 cmd) { <------>ide_hwif_t *hwif = drive->hwif; <------>const struct ide_tp_ops *tp_ops = hwif->tp_ops; <------>u16 *id = drive->id; <------>int rc; <------>u8 present = !!(drive->dev_flags & IDE_DFLAG_PRESENT), stat; <------>/* avoid waiting for inappropriate probes */ <------>if (present && drive->media != ide_disk && cmd == ATA_CMD_ID_ATA) <------><------>return 4; #ifdef DEBUG <------>printk(KERN_INFO "probing for %s: present=%d, media=%d, probetype=%s\n", <------><------>drive->name, present, drive->media, <------><------>(cmd == ATA_CMD_ID_ATA) ? "ATA" : "ATAPI"); #endif <------>/* needed for some systems <------> * (e.g. crw9624 as drive0 with disk as slave) <------> */ <------>msleep(50); <------>tp_ops->dev_select(drive); <------>msleep(50); <------>if (ide_read_device(drive) != drive->select && present == 0) { <------><------>if (drive->dn & 1) { <------><------><------>/* exit with drive0 selected */ <------><------><------>tp_ops->dev_select(hwif->devices[0]); <------><------><------>/* allow ATA_BUSY to assert & clear */ <------><------><------>msleep(50); <------><------>} <------><------>/* no i/f present: mmm.. this should be a 4 -ml */ <------><------>return 3; <------>} <------>stat = tp_ops->read_status(hwif); <------>if (OK_STAT(stat, ATA_DRDY, ATA_BUSY) || <------> present || cmd == ATA_CMD_ID_ATAPI) { <------><------>rc = ide_dev_read_id(drive, cmd, id, 0); <------><------>if (rc) <------><------><------>/* failed: try again */ <------><------><------>rc = ide_dev_read_id(drive, cmd, id, 0); <------><------>stat = tp_ops->read_status(hwif); <------><------>if (stat == (ATA_BUSY | ATA_DRDY)) <------><------><------>return 4; <------><------>if (rc == 1 && cmd == ATA_CMD_ID_ATAPI) { <------><------><------>printk(KERN_ERR "%s: no response (status = 0x%02x), " <------><------><------><------><------>"resetting drive\n", drive->name, stat); <------><------><------>msleep(50); <------><------><------>tp_ops->dev_select(drive); <------><------><------>msleep(50); <------><------><------>tp_ops->exec_command(hwif, ATA_CMD_DEV_RESET); <------><------><------>(void)ide_busy_sleep(drive, WAIT_WORSTCASE, 0); <------><------><------>rc = ide_dev_read_id(drive, cmd, id, 0); <------><------>} <------><------>/* ensure drive IRQ is clear */ <------><------>stat = tp_ops->read_status(hwif); <------><------>if (rc == 1) <------><------><------>printk(KERN_ERR "%s: no response (status = 0x%02x)\n", <------><------><------><------><------>drive->name, stat); <------>} else { <------><------>/* not present or maybe ATAPI */ <------><------>rc = 3; <------>} <------>if (drive->dn & 1) { <------><------>/* exit with drive0 selected */ <------><------>tp_ops->dev_select(hwif->devices[0]); <------><------>msleep(50); <------><------>/* ensure drive irq is clear */ <------><------>(void)tp_ops->read_status(hwif); <------>} <------>return rc; } /** * probe_for_drives - upper level drive probe * @drive: drive to probe for * * probe_for_drive() tests for existence of a given drive using do_probe() * and presents things to the user as needed. * * Returns: 0 no device was found * 1 device was found * (note: IDE_DFLAG_PRESENT might still be not set) */ static u8 probe_for_drive(ide_drive_t *drive) { <------>char *m; <------>int rc; <------>u8 cmd; <------>drive->dev_flags &= ~IDE_DFLAG_ID_READ; <------>m = (char *)&drive->id[ATA_ID_PROD]; <------>strcpy(m, "UNKNOWN"); <------>/* skip probing? */ <------>if ((drive->dev_flags & IDE_DFLAG_NOPROBE) == 0) { <------><------>/* if !(success||timed-out) */ <------><------>cmd = ATA_CMD_ID_ATA; <------><------>rc = do_probe(drive, cmd); <------><------>if (rc >= 2) { <------><------><------>/* look for ATAPI device */ <------><------><------>cmd = ATA_CMD_ID_ATAPI; <------><------><------>rc = do_probe(drive, cmd); <------><------>} <------><------>if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0) <------><------><------>return 0; <------><------>/* identification failed? */ <------><------>if ((drive->dev_flags & IDE_DFLAG_ID_READ) == 0) { <------><------><------>if (drive->media == ide_disk) { <------><------><------><------>printk(KERN_INFO "%s: non-IDE drive, CHS=%d/%d/%d\n", <------><------><------><------><------>drive->name, drive->cyl, <------><------><------><------><------>drive->head, drive->sect); <------><------><------>} else if (drive->media == ide_cdrom) { <------><------><------><------>printk(KERN_INFO "%s: ATAPI cdrom (?)\n", drive->name); <------><------><------>} else { <------><------><------><------>/* nuke it */ <------><------><------><------>printk(KERN_WARNING "%s: Unknown device on bus refused identification. Ignoring.\n", drive->name); <------><------><------><------>drive->dev_flags &= ~IDE_DFLAG_PRESENT; <------><------><------>} <------><------>} else { <------><------><------>if (cmd == ATA_CMD_ID_ATAPI) <------><------><------><------>ide_classify_atapi_dev(drive); <------><------><------>else <------><------><------><------>ide_classify_ata_dev(drive); <------><------>} <------>} <------>if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0) <------><------>return 0; <------>/* The drive wasn't being helpful. Add generic info only */ <------>if ((drive->dev_flags & IDE_DFLAG_ID_READ) == 0) { <------><------>generic_id(drive); <------><------>return 1; <------>} <------>if (drive->media == ide_disk) { <------><------>ide_disk_init_chs(drive); <------><------>ide_disk_init_mult_count(drive); <------>} <------>return 1; } static void hwif_release_dev(struct device *dev) { <------>ide_hwif_t *hwif = container_of(dev, ide_hwif_t, gendev); <------>complete(&hwif->gendev_rel_comp); } static int ide_register_port(ide_hwif_t *hwif) { <------>int ret; <------>/* register with global device tree */ <------>dev_set_name(&hwif->gendev, "%s", hwif->name); <------>dev_set_drvdata(&hwif->gendev, hwif); <------>if (hwif->gendev.parent == NULL) <------><------>hwif->gendev.parent = hwif->dev; <------>hwif->gendev.release = hwif_release_dev; <------>ret = device_register(&hwif->gendev); <------>if (ret < 0) { <------><------>printk(KERN_WARNING "IDE: %s: device_register error: %d\n", <------><------><------>__func__, ret); <------><------>goto out; <------>} <------>hwif->portdev = device_create(ide_port_class, &hwif->gendev, <------><------><------><------> MKDEV(0, 0), hwif, "%s", hwif->name); <------>if (IS_ERR(hwif->portdev)) { <------><------>ret = PTR_ERR(hwif->portdev); <------><------>device_unregister(&hwif->gendev); <------>} out: <------>return ret; } /** * ide_port_wait_ready - wait for port to become ready * @hwif: IDE port * * This is needed on some PPCs and a bunch of BIOS-less embedded * platforms. Typical cases are: * * - The firmware hard reset the disk before booting the kernel, * the drive is still doing it's poweron-reset sequence, that * can take up to 30 seconds. * * - The firmware does nothing (or no firmware), the device is * still in POST state (same as above actually). * * - Some CD/DVD/Writer combo drives tend to drive the bus during * their reset sequence even when they are non-selected slave * devices, thus preventing discovery of the main HD. * * Doing this wait-for-non-busy should not harm any existing * configuration and fix some issues like the above. * * BenH. * * Returns 0 on success, error code (< 0) otherwise. */ static int ide_port_wait_ready(ide_hwif_t *hwif) { <------>const struct ide_tp_ops *tp_ops = hwif->tp_ops; <------>ide_drive_t *drive; <------>int i, rc; <------>printk(KERN_DEBUG "Probing IDE interface %s...\n", hwif->name); <------>/* Let HW settle down a bit from whatever init state we <------> * come from */ <------>mdelay(2); <------>/* Wait for BSY bit to go away, spec timeout is 30 seconds, <------> * I know of at least one disk who takes 31 seconds, I use 35 <------> * here to be safe <------> */ <------>rc = ide_wait_not_busy(hwif, 35000); <------>if (rc) <------><------>return rc; <------>/* Now make sure both master & slave are ready */ <------>ide_port_for_each_dev(i, drive, hwif) { <------><------>/* Ignore disks that we will not probe for later. */ <------><------>if ((drive->dev_flags & IDE_DFLAG_NOPROBE) == 0 || <------><------> (drive->dev_flags & IDE_DFLAG_PRESENT)) { <------><------><------>tp_ops->dev_select(drive); <------><------><------>tp_ops->write_devctl(hwif, ATA_DEVCTL_OBS); <------><------><------>mdelay(2); <------><------><------>rc = ide_wait_not_busy(hwif, 35000); <------><------><------>if (rc) <------><------><------><------>goto out; <------><------>} else <------><------><------>printk(KERN_DEBUG "%s: ide_wait_not_busy() skipped\n", <------><------><------><------><------> drive->name); <------>} out: <------>/* Exit function with master reselected (let's be sane) */ <------>if (i) <------><------>tp_ops->dev_select(hwif->devices[0]); <------>return rc; } /** * ide_undecoded_slave - look for bad CF adapters * @dev1: slave device * * Analyse the drives on the interface and attempt to decide if we * have the same drive viewed twice. This occurs with crap CF adapters * and PCMCIA sometimes. */ void ide_undecoded_slave(ide_drive_t *dev1) { <------>ide_drive_t *dev0 = dev1->hwif->devices[0]; <------>if ((dev1->dn & 1) == 0 || (dev0->dev_flags & IDE_DFLAG_PRESENT) == 0) <------><------>return; <------>/* If the models don't match they are not the same product */ <------>if (strcmp((char *)&dev0->id[ATA_ID_PROD], <------><------> (char *)&dev1->id[ATA_ID_PROD])) <------><------>return; <------>/* Serial numbers do not match */ <------>if (strncmp((char *)&dev0->id[ATA_ID_SERNO], <------><------> (char *)&dev1->id[ATA_ID_SERNO], ATA_ID_SERNO_LEN)) <------><------>return; <------>/* No serial number, thankfully very rare for CF */ <------>if (*(char *)&dev0->id[ATA_ID_SERNO] == 0) <------><------>return; <------>/* Appears to be an IDE flash adapter with decode bugs */ <------>printk(KERN_WARNING "ide-probe: ignoring undecoded slave\n"); <------>dev1->dev_flags &= ~IDE_DFLAG_PRESENT; } EXPORT_SYMBOL_GPL(ide_undecoded_slave); static int ide_probe_port(ide_hwif_t *hwif) { <------>ide_drive_t *drive; <------>unsigned int irqd; <------>int i, rc = -ENODEV; <------>BUG_ON(hwif->present); <------>if ((hwif->devices[0]->dev_flags & IDE_DFLAG_NOPROBE) && <------> (hwif->devices[1]->dev_flags & IDE_DFLAG_NOPROBE)) <------><------>return -EACCES; <------>/* <------> * We must always disable IRQ, as probe_for_drive will assert IRQ, but <------> * we'll install our IRQ driver much later... <------> */ <------>irqd = hwif->irq; <------>if (irqd) <------><------>disable_irq(hwif->irq); <------>if (ide_port_wait_ready(hwif) == -EBUSY) <------><------>printk(KERN_DEBUG "%s: Wait for ready failed before probe !\n", hwif->name); <------>/* <------> * Second drive should only exist if first drive was found, <------> * but a lot of cdrom drives are configured as single slaves. <------> */ <------>ide_port_for_each_dev(i, drive, hwif) { <------><------>(void) probe_for_drive(drive); <------><------>if (drive->dev_flags & IDE_DFLAG_PRESENT) <------><------><------>rc = 0; <------>} <------>/* <------> * Use cached IRQ number. It might be (and is...) changed by probe <------> * code above <------> */ <------>if (irqd) <------><------>enable_irq(irqd); <------>return rc; } static void ide_port_tune_devices(ide_hwif_t *hwif) { <------>const struct ide_port_ops *port_ops = hwif->port_ops; <------>ide_drive_t *drive; <------>int i; <------>ide_port_for_each_present_dev(i, drive, hwif) { <------><------>ide_check_nien_quirk_list(drive); <------><------>if (port_ops && port_ops->quirkproc) <------><------><------>port_ops->quirkproc(drive); <------>} <------>ide_port_for_each_present_dev(i, drive, hwif) { <------><------>ide_set_max_pio(drive); <------><------>drive->dev_flags |= IDE_DFLAG_NICE1; <------><------>if (hwif->dma_ops) <------><------><------>ide_set_dma(drive); <------>} } static void ide_initialize_rq(struct request *rq) { <------>struct ide_request *req = blk_mq_rq_to_pdu(rq); <------>req->special = NULL; <------>scsi_req_init(&req->sreq); <------>req->sreq.sense = req->sense; } static const struct blk_mq_ops ide_mq_ops = { <------>.queue_rq = ide_queue_rq, <------>.initialize_rq_fn = ide_initialize_rq, }; /* * init request queue */ static int ide_init_queue(ide_drive_t *drive) { <------>struct request_queue *q; <------>ide_hwif_t *hwif = drive->hwif; <------>int max_sectors = 256; <------>int max_sg_entries = PRD_ENTRIES; <------>struct blk_mq_tag_set *set; <------>/* <------> * Our default set up assumes the normal IDE case, <------> * that is 64K segmenting, standard PRD setup <------> * and LBA28. Some drivers then impose their own <------> * limits and LBA48 we could raise it but as yet <------> * do not. <------> */ <------>set = &drive->tag_set; <------>set->ops = &ide_mq_ops; <------>set->nr_hw_queues = 1; <------>set->queue_depth = 32; <------>set->reserved_tags = 1; <------>set->cmd_size = sizeof(struct ide_request); <------>set->numa_node = hwif_to_node(hwif); <------>set->flags = BLK_MQ_F_SHOULD_MERGE | BLK_MQ_F_BLOCKING; <------>if (blk_mq_alloc_tag_set(set)) <------><------>return 1; <------>q = blk_mq_init_queue(set); <------>if (IS_ERR(q)) { <------><------>blk_mq_free_tag_set(set); <------><------>return 1; <------>} <------>blk_queue_flag_set(QUEUE_FLAG_SCSI_PASSTHROUGH, q); <------>q->queuedata = drive; <------>blk_queue_segment_boundary(q, 0xffff); <------>if (hwif->rqsize < max_sectors) <------><------>max_sectors = hwif->rqsize; <------>blk_queue_max_hw_sectors(q, max_sectors); #ifdef CONFIG_PCI <------>/* When we have an IOMMU, we may have a problem where pci_map_sg() <------> * creates segments that don't completely match our boundary <------> * requirements and thus need to be broken up again. Because it <------> * doesn't align properly either, we may actually have to break up <------> * to more segments than what was we got in the first place, a max <------> * worst case is twice as many. <------> * This will be fixed once we teach pci_map_sg() about our boundary <------> * requirements, hopefully soon. *FIXME* <------> */ <------>max_sg_entries >>= 1; #endif /* CONFIG_PCI */ <------>blk_queue_max_segments(q, max_sg_entries); <------>/* assign drive queue */ <------>drive->queue = q; <------>return 0; } static DEFINE_MUTEX(ide_cfg_mtx); /* * For any present drive: * - allocate the block device queue */ static int ide_port_setup_devices(ide_hwif_t *hwif) { <------>ide_drive_t *drive; <------>int i, j = 0; <------>mutex_lock(&ide_cfg_mtx); <------>ide_port_for_each_present_dev(i, drive, hwif) { <------><------>if (ide_init_queue(drive)) { <------><------><------>printk(KERN_ERR "ide: failed to init %s\n", <------><------><------><------><------>drive->name); <------><------><------>drive->dev_flags &= ~IDE_DFLAG_PRESENT; <------><------><------>continue; <------><------>} <------><------>j++; <------>} <------>mutex_unlock(&ide_cfg_mtx); <------>return j; } static void ide_host_enable_irqs(struct ide_host *host) { <------>ide_hwif_t *hwif; <------>int i; <------>ide_host_for_each_port(i, hwif, host) { <------><------>if (hwif == NULL) <------><------><------>continue; <------><------>/* clear any pending IRQs */ <------><------>hwif->tp_ops->read_status(hwif); <------><------>/* unmask IRQs */ <------><------>if (hwif->io_ports.ctl_addr) <------><------><------>hwif->tp_ops->write_devctl(hwif, ATA_DEVCTL_OBS); <------>} } /* * This routine sets up the IRQ for an IDE interface. */ static int init_irq (ide_hwif_t *hwif) { <------>struct ide_io_ports *io_ports = &hwif->io_ports; <------>struct ide_host *host = hwif->host; <------>irq_handler_t irq_handler = host->irq_handler; <------>int sa = host->irq_flags; <------>if (irq_handler == NULL) <------><------>irq_handler = ide_intr; <------>if (!host->get_lock) <------><------>if (request_irq(hwif->irq, irq_handler, sa, hwif->name, hwif)) <------><------><------>goto out_up; #if !defined(__mc68000__) <------>printk(KERN_INFO "%s at 0x%03lx-0x%03lx,0x%03lx on irq %d", hwif->name, <------><------>io_ports->data_addr, io_ports->status_addr, <------><------>io_ports->ctl_addr, hwif->irq); #else <------>printk(KERN_INFO "%s at 0x%08lx on irq %d", hwif->name, <------><------>io_ports->data_addr, hwif->irq); #endif /* __mc68000__ */ <------>if (hwif->host->host_flags & IDE_HFLAG_SERIALIZE) <------><------>printk(KERN_CONT " (serialized)"); <------>printk(KERN_CONT "\n"); <------>return 0; out_up: <------>return 1; } static int ata_lock(dev_t dev, void *data) { <------>/* FIXME: we want to pin hwif down */ <------>return 0; } static struct kobject *ata_probe(dev_t dev, int *part, void *data) { <------>ide_hwif_t *hwif = data; <------>int unit = *part >> PARTN_BITS; <------>ide_drive_t *drive = hwif->devices[unit]; <------>if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0) <------><------>return NULL; <------>if (drive->media == ide_disk) <------><------>request_module("ide-disk"); <------>if (drive->media == ide_cdrom || drive->media == ide_optical) <------><------>request_module("ide-cd"); <------>if (drive->media == ide_tape) <------><------>request_module("ide-tape"); <------>if (drive->media == ide_floppy) <------><------>request_module("ide-floppy"); <------>return NULL; } static struct kobject *exact_match(dev_t dev, int *part, void *data) { <------>struct gendisk *p = data; <------>*part &= (1 << PARTN_BITS) - 1; <------>return &disk_to_dev(p)->kobj; } static int exact_lock(dev_t dev, void *data) { <------>struct gendisk *p = data; <------>if (!get_disk_and_module(p)) <------><------>return -1; <------>return 0; } void ide_register_region(struct gendisk *disk) { <------>blk_register_region(MKDEV(disk->major, disk->first_minor), <------><------><------> disk->minors, NULL, exact_match, exact_lock, disk); } EXPORT_SYMBOL_GPL(ide_register_region); void ide_unregister_region(struct gendisk *disk) { <------>blk_unregister_region(MKDEV(disk->major, disk->first_minor), <------><------><------> disk->minors); } EXPORT_SYMBOL_GPL(ide_unregister_region); void ide_init_disk(struct gendisk *disk, ide_drive_t *drive) { <------>ide_hwif_t *hwif = drive->hwif; <------>unsigned int unit = drive->dn & 1; <------>disk->major = hwif->major; <------>disk->first_minor = unit << PARTN_BITS; <------>sprintf(disk->disk_name, "hd%c", 'a' + hwif->index * MAX_DRIVES + unit); <------>disk->queue = drive->queue; } EXPORT_SYMBOL_GPL(ide_init_disk); static void drive_release_dev (struct device *dev) { <------>ide_drive_t *drive = container_of(dev, ide_drive_t, gendev); <------>ide_proc_unregister_device(drive); <------>if (drive->sense_rq) <------><------>blk_mq_free_request(drive->sense_rq); <------>blk_cleanup_queue(drive->queue); <------>drive->queue = NULL; <------>blk_mq_free_tag_set(&drive->tag_set); <------>drive->dev_flags &= ~IDE_DFLAG_PRESENT; <------>complete(&drive->gendev_rel_comp); } static int hwif_init(ide_hwif_t *hwif) { <------>if (!hwif->irq) { <------><------>printk(KERN_ERR "%s: disabled, no IRQ\n", hwif->name); <------><------>return 0; <------>} <------>if (register_blkdev(hwif->major, hwif->name)) <------><------>return 0; <------>if (!hwif->sg_max_nents) <------><------>hwif->sg_max_nents = PRD_ENTRIES; <------>hwif->sg_table = kmalloc_array(hwif->sg_max_nents, <------><------><------><------> sizeof(struct scatterlist), <------><------><------><------> GFP_KERNEL); <------>if (!hwif->sg_table) { <------><------>printk(KERN_ERR "%s: unable to allocate SG table.\n", hwif->name); <------><------>goto out; <------>} <------>sg_init_table(hwif->sg_table, hwif->sg_max_nents); <------> <------>if (init_irq(hwif)) { <------><------>printk(KERN_ERR "%s: disabled, unable to get IRQ %d\n", <------><------><------>hwif->name, hwif->irq); <------><------>goto out; <------>} <------>blk_register_region(MKDEV(hwif->major, 0), MAX_DRIVES << PARTN_BITS, <------><------><------> THIS_MODULE, ata_probe, ata_lock, hwif); <------>return 1; out: <------>unregister_blkdev(hwif->major, hwif->name); <------>return 0; } static void hwif_register_devices(ide_hwif_t *hwif) { <------>ide_drive_t *drive; <------>unsigned int i; <------>ide_port_for_each_present_dev(i, drive, hwif) { <------><------>struct device *dev = &drive->gendev; <------><------>int ret; <------><------>dev_set_name(dev, "%u.%u", hwif->index, i); <------><------>dev_set_drvdata(dev, drive); <------><------>dev->parent = &hwif->gendev; <------><------>dev->bus = &ide_bus_type; <------><------>dev->release = drive_release_dev; <------><------>ret = device_register(dev); <------><------>if (ret < 0) <------><------><------>printk(KERN_WARNING "IDE: %s: device_register error: " <------><------><------><------><------> "%d\n", __func__, ret); <------>} } static void ide_port_init_devices(ide_hwif_t *hwif) { <------>const struct ide_port_ops *port_ops = hwif->port_ops; <------>ide_drive_t *drive; <------>int i; <------>ide_port_for_each_dev(i, drive, hwif) { <------><------>drive->dn = i + hwif->channel * 2; <------><------>if (hwif->host_flags & IDE_HFLAG_IO_32BIT) <------><------><------>drive->io_32bit = 1; <------><------>if (hwif->host_flags & IDE_HFLAG_NO_IO_32BIT) <------><------><------>drive->dev_flags |= IDE_DFLAG_NO_IO_32BIT; <------><------>if (hwif->host_flags & IDE_HFLAG_UNMASK_IRQS) <------><------><------>drive->dev_flags |= IDE_DFLAG_UNMASK; <------><------>if (hwif->host_flags & IDE_HFLAG_NO_UNMASK_IRQS) <------><------><------>drive->dev_flags |= IDE_DFLAG_NO_UNMASK; <------><------>drive->pio_mode = XFER_PIO_0; <------><------>if (port_ops && port_ops->init_dev) <------><------><------>port_ops->init_dev(drive); <------>} } static void ide_init_port(ide_hwif_t *hwif, unsigned int port, <------><------><------> const struct ide_port_info *d) { <------>hwif->channel = port; <------>hwif->chipset = d->chipset ? d->chipset : ide_pci; <------>if (d->init_iops) <------><------>d->init_iops(hwif); <------>/* ->host_flags may be set by ->init_iops (or even earlier...) */ <------>hwif->host_flags |= d->host_flags; <------>hwif->pio_mask = d->pio_mask; <------>if (d->tp_ops) <------><------>hwif->tp_ops = d->tp_ops; <------>/* ->set_pio_mode for DTC2278 is currently limited to port 0 */ <------>if ((hwif->host_flags & IDE_HFLAG_DTC2278) == 0 || hwif->channel == 0) <------><------>hwif->port_ops = d->port_ops; <------>hwif->swdma_mask = d->swdma_mask; <------>hwif->mwdma_mask = d->mwdma_mask; <------>hwif->ultra_mask = d->udma_mask; <------>if ((d->host_flags & IDE_HFLAG_NO_DMA) == 0) { <------><------>int rc; <------><------>hwif->dma_ops = d->dma_ops; <------><------>if (d->init_dma) <------><------><------>rc = d->init_dma(hwif, d); <------><------>else <------><------><------>rc = ide_hwif_setup_dma(hwif, d); <------><------>if (rc < 0) { <------><------><------>printk(KERN_INFO "%s: DMA disabled\n", hwif->name); <------><------><------>hwif->dma_ops = NULL; <------><------><------>hwif->dma_base = 0; <------><------><------>hwif->swdma_mask = 0; <------><------><------>hwif->mwdma_mask = 0; <------><------><------>hwif->ultra_mask = 0; <------><------>} <------>} <------>if ((d->host_flags & IDE_HFLAG_SERIALIZE) || <------> ((d->host_flags & IDE_HFLAG_SERIALIZE_DMA) && hwif->dma_base)) <------><------>hwif->host->host_flags |= IDE_HFLAG_SERIALIZE; <------>if (d->max_sectors) <------><------>hwif->rqsize = d->max_sectors; <------>else { <------><------>if ((hwif->host_flags & IDE_HFLAG_NO_LBA48) || <------><------> (hwif->host_flags & IDE_HFLAG_NO_LBA48_DMA)) <------><------><------>hwif->rqsize = 256; <------><------>else <------><------><------>hwif->rqsize = 65536; <------>} <------>/* call chipset specific routine for each enabled port */ <------>if (d->init_hwif) <------><------>d->init_hwif(hwif); } static void ide_port_cable_detect(ide_hwif_t *hwif) { <------>const struct ide_port_ops *port_ops = hwif->port_ops; <------>if (port_ops && port_ops->cable_detect && (hwif->ultra_mask & 0x78)) { <------><------>if (hwif->cbl != ATA_CBL_PATA40_SHORT) <------><------><------>hwif->cbl = port_ops->cable_detect(hwif); <------>} } /* * Deferred request list insertion handler */ static void drive_rq_insert_work(struct work_struct *work) { <------>ide_drive_t *drive = container_of(work, ide_drive_t, rq_work); <------>ide_hwif_t *hwif = drive->hwif; <------>struct request *rq; <------>blk_status_t ret; <------>LIST_HEAD(list); <------>blk_mq_quiesce_queue(drive->queue); <------>ret = BLK_STS_OK; <------>spin_lock_irq(&hwif->lock); <------>while (!list_empty(&drive->rq_list)) { <------><------>rq = list_first_entry(&drive->rq_list, struct request, queuelist); <------><------>list_del_init(&rq->queuelist); <------><------>spin_unlock_irq(&hwif->lock); <------><------>ret = ide_issue_rq(drive, rq, true); <------><------>spin_lock_irq(&hwif->lock); <------>} <------>spin_unlock_irq(&hwif->lock); <------>blk_mq_unquiesce_queue(drive->queue); <------>if (ret != BLK_STS_OK) <------><------>kblockd_schedule_work(&drive->rq_work); } static const u8 ide_hwif_to_major[] = <------>{ IDE0_MAJOR, IDE1_MAJOR, IDE2_MAJOR, IDE3_MAJOR, IDE4_MAJOR, <------> IDE5_MAJOR, IDE6_MAJOR, IDE7_MAJOR, IDE8_MAJOR, IDE9_MAJOR }; static void ide_port_init_devices_data(ide_hwif_t *hwif) { <------>ide_drive_t *drive; <------>int i; <------>ide_port_for_each_dev(i, drive, hwif) { <------><------>u8 j = (hwif->index * MAX_DRIVES) + i; <------><------>u16 *saved_id = drive->id; <------><------>memset(drive, 0, sizeof(*drive)); <------><------>memset(saved_id, 0, SECTOR_SIZE); <------><------>drive->id = saved_id; <------><------>drive->media = ide_disk; <------><------>drive->select = (i << 4) | ATA_DEVICE_OBS; <------><------>drive->hwif = hwif; <------><------>drive->ready_stat = ATA_DRDY; <------><------>drive->bad_wstat = BAD_W_STAT; <------><------>drive->special_flags = IDE_SFLAG_RECALIBRATE | <------><------><------><------><------><------> IDE_SFLAG_SET_GEOMETRY; <------><------>drive->name[0] = 'h'; <------><------>drive->name[1] = 'd'; <------><------>drive->name[2] = 'a' + j; <------><------>drive->max_failures = IDE_DEFAULT_MAX_FAILURES; <------><------>INIT_LIST_HEAD(&drive->list); <------><------>init_completion(&drive->gendev_rel_comp); <------><------>INIT_WORK(&drive->rq_work, drive_rq_insert_work); <------><------>INIT_LIST_HEAD(&drive->rq_list); <------>} } static void ide_init_port_data(ide_hwif_t *hwif, unsigned int index) { <------>/* fill in any non-zero initial values */ <------>hwif->index = index; <------>hwif->major = ide_hwif_to_major[index]; <------>hwif->name[0] = 'i'; <------>hwif->name[1] = 'd'; <------>hwif->name[2] = 'e'; <------>hwif->name[3] = '0' + index; <------>spin_lock_init(&hwif->lock); <------>timer_setup(&hwif->timer, ide_timer_expiry, 0); <------>init_completion(&hwif->gendev_rel_comp); <------>hwif->tp_ops = &default_tp_ops; <------>ide_port_init_devices_data(hwif); } static void ide_init_port_hw(ide_hwif_t *hwif, struct ide_hw *hw) { <------>memcpy(&hwif->io_ports, &hw->io_ports, sizeof(hwif->io_ports)); <------>hwif->irq = hw->irq; <------>hwif->dev = hw->dev; <------>hwif->gendev.parent = hw->parent ? hw->parent : hw->dev; <------>hwif->config_data = hw->config; } static unsigned int ide_indexes; /** * ide_find_port_slot - find free port slot * @d: IDE port info * * Return the new port slot index or -ENOENT if we are out of free slots. */ static int ide_find_port_slot(const struct ide_port_info *d) { <------>int idx = -ENOENT; <------>u8 bootable = (d && (d->host_flags & IDE_HFLAG_NON_BOOTABLE)) ? 0 : 1; <------>u8 i = (d && (d->host_flags & IDE_HFLAG_QD_2ND_PORT)) ? 1 : 0; <------>/* <------> * Claim an unassigned slot. <------> * <------> * Give preference to claiming other slots before claiming ide0/ide1, <------> * just in case there's another interface yet-to-be-scanned <------> * which uses ports 0x1f0/0x170 (the ide0/ide1 defaults). <------> * <------> * Unless there is a bootable card that does not use the standard <------> * ports 0x1f0/0x170 (the ide0/ide1 defaults). <------> */ <------>mutex_lock(&ide_cfg_mtx); <------>if (bootable) { <------><------>if ((ide_indexes | i) != (1 << MAX_HWIFS) - 1) <------><------><------>idx = ffz(ide_indexes | i); <------>} else { <------><------>if ((ide_indexes | 3) != (1 << MAX_HWIFS) - 1) <------><------><------>idx = ffz(ide_indexes | 3); <------><------>else if ((ide_indexes & 3) != 3) <------><------><------>idx = ffz(ide_indexes); <------>} <------>if (idx >= 0) <------><------>ide_indexes |= (1 << idx); <------>mutex_unlock(&ide_cfg_mtx); <------>return idx; } static void ide_free_port_slot(int idx) { <------>mutex_lock(&ide_cfg_mtx); <------>ide_indexes &= ~(1 << idx); <------>mutex_unlock(&ide_cfg_mtx); } static void ide_port_free_devices(ide_hwif_t *hwif) { <------>ide_drive_t *drive; <------>int i; <------>ide_port_for_each_dev(i, drive, hwif) { <------><------>kfree(drive->id); <------><------>kfree(drive); <------>} } static int ide_port_alloc_devices(ide_hwif_t *hwif, int node) { <------>ide_drive_t *drive; <------>int i; <------>for (i = 0; i < MAX_DRIVES; i++) { <------><------>drive = kzalloc_node(sizeof(*drive), GFP_KERNEL, node); <------><------>if (drive == NULL) <------><------><------>goto out_nomem; <------><------>/* <------><------> * In order to keep things simple we have an id <------><------> * block for all drives at all times. If the device <------><------> * is pre ATA or refuses ATA/ATAPI identify we <------><------> * will add faked data to this. <------><------> * <------><------> * Also note that 0 everywhere means "can't do X" <------><------> */ <------><------>drive->id = kzalloc_node(SECTOR_SIZE, GFP_KERNEL, node); <------><------>if (drive->id == NULL) <------><------><------>goto out_free_drive; <------><------>hwif->devices[i] = drive; <------>} <------>return 0; out_free_drive: <------>kfree(drive); out_nomem: <------>ide_port_free_devices(hwif); <------>return -ENOMEM; } struct ide_host *ide_host_alloc(const struct ide_port_info *d, <------><------><------><------>struct ide_hw **hws, unsigned int n_ports) { <------>struct ide_host *host; <------>struct device *dev = hws[0] ? hws[0]->dev : NULL; <------>int node = dev ? dev_to_node(dev) : -1; <------>int i; <------>host = kzalloc_node(sizeof(*host), GFP_KERNEL, node); <------>if (host == NULL) <------><------>return NULL; <------>for (i = 0; i < n_ports; i++) { <------><------>ide_hwif_t *hwif; <------><------>int idx; <------><------>if (hws[i] == NULL) <------><------><------>continue; <------><------>hwif = kzalloc_node(sizeof(*hwif), GFP_KERNEL, node); <------><------>if (hwif == NULL) <------><------><------>continue; <------><------>if (ide_port_alloc_devices(hwif, node) < 0) { <------><------><------>kfree(hwif); <------><------><------>continue; <------><------>} <------><------>idx = ide_find_port_slot(d); <------><------>if (idx < 0) { <------><------><------>printk(KERN_ERR "%s: no free slot for interface\n", <------><------><------><------><------>d ? d->name : "ide"); <------><------><------>ide_port_free_devices(hwif); <------><------><------>kfree(hwif); <------><------><------>continue; <------><------>} <------><------>ide_init_port_data(hwif, idx); <------><------>hwif->host = host; <------><------>host->ports[i] = hwif; <------><------>host->n_ports++; <------>} <------>if (host->n_ports == 0) { <------><------>kfree(host); <------><------>return NULL; <------>} <------>host->dev[0] = dev; <------>if (d) { <------><------>host->init_chipset = d->init_chipset; <------><------>host->get_lock = d->get_lock; <------><------>host->release_lock = d->release_lock; <------><------>host->host_flags = d->host_flags; <------><------>host->irq_flags = d->irq_flags; <------>} <------>return host; } EXPORT_SYMBOL_GPL(ide_host_alloc); static void ide_port_free(ide_hwif_t *hwif) { <------>ide_port_free_devices(hwif); <------>ide_free_port_slot(hwif->index); <------>kfree(hwif); } static void ide_disable_port(ide_hwif_t *hwif) { <------>struct ide_host *host = hwif->host; <------>int i; <------>printk(KERN_INFO "%s: disabling port\n", hwif->name); <------>for (i = 0; i < MAX_HOST_PORTS; i++) { <------><------>if (host->ports[i] == hwif) { <------><------><------>host->ports[i] = NULL; <------><------><------>host->n_ports--; <------><------>} <------>} <------>ide_port_free(hwif); } int ide_host_register(struct ide_host *host, const struct ide_port_info *d, <------><------> struct ide_hw **hws) { <------>ide_hwif_t *hwif, *mate = NULL; <------>int i, j = 0; <------>pr_warn("legacy IDE will be removed in 2021, please switch to libata\n" <------><------>"Report any missing HW support to linux-ide@vger.kernel.org\n"); <------>ide_host_for_each_port(i, hwif, host) { <------><------>if (hwif == NULL) { <------><------><------>mate = NULL; <------><------><------>continue; <------><------>} <------><------>ide_init_port_hw(hwif, hws[i]); <------><------>ide_port_apply_params(hwif); <------><------>if ((i & 1) && mate) { <------><------><------>hwif->mate = mate; <------><------><------>mate->mate = hwif; <------><------>} <------><------>mate = (i & 1) ? NULL : hwif; <------><------>ide_init_port(hwif, i & 1, d); <------><------>ide_port_cable_detect(hwif); <------><------>hwif->port_flags |= IDE_PFLAG_PROBING; <------><------>ide_port_init_devices(hwif); <------>} <------>ide_host_for_each_port(i, hwif, host) { <------><------>if (hwif == NULL) <------><------><------>continue; <------><------>if (ide_probe_port(hwif) == 0) <------><------><------>hwif->present = 1; <------><------>hwif->port_flags &= ~IDE_PFLAG_PROBING; <------><------>if ((hwif->host_flags & IDE_HFLAG_4DRIVES) == 0 || <------><------> hwif->mate == NULL || hwif->mate->present == 0) { <------><------><------>if (ide_register_port(hwif)) { <------><------><------><------>ide_disable_port(hwif); <------><------><------><------>continue; <------><------><------>} <------><------>} <------><------>if (hwif->present) <------><------><------>ide_port_tune_devices(hwif); <------>} <------>ide_host_enable_irqs(host); <------>ide_host_for_each_port(i, hwif, host) { <------><------>if (hwif == NULL) <------><------><------>continue; <------><------>if (hwif_init(hwif) == 0) { <------><------><------>printk(KERN_INFO "%s: failed to initialize IDE " <------><------><------><------><------> "interface\n", hwif->name); <------><------><------>device_unregister(hwif->portdev); <------><------><------>device_unregister(&hwif->gendev); <------><------><------>ide_disable_port(hwif); <------><------><------>continue; <------><------>} <------><------>if (hwif->present) <------><------><------>if (ide_port_setup_devices(hwif) == 0) { <------><------><------><------>hwif->present = 0; <------><------><------><------>continue; <------><------><------>} <------><------>j++; <------><------>ide_acpi_init_port(hwif); <------><------>if (hwif->present) <------><------><------>ide_acpi_port_init_devices(hwif); <------>} <------>ide_host_for_each_port(i, hwif, host) { <------><------>if (hwif == NULL) <------><------><------>continue; <------><------>ide_sysfs_register_port(hwif); <------><------>ide_proc_register_port(hwif); <------><------>if (hwif->present) { <------><------><------>ide_proc_port_register_devices(hwif); <------><------><------>hwif_register_devices(hwif); <------><------>} <------>} <------>return j ? 0 : -1; } EXPORT_SYMBOL_GPL(ide_host_register); int ide_host_add(const struct ide_port_info *d, struct ide_hw **hws, <------><------> unsigned int n_ports, struct ide_host **hostp) { <------>struct ide_host *host; <------>int rc; <------>host = ide_host_alloc(d, hws, n_ports); <------>if (host == NULL) <------><------>return -ENOMEM; <------>rc = ide_host_register(host, d, hws); <------>if (rc) { <------><------>ide_host_free(host); <------><------>return rc; <------>} <------>if (hostp) <------><------>*hostp = host; <------>return 0; } EXPORT_SYMBOL_GPL(ide_host_add); static void __ide_port_unregister_devices(ide_hwif_t *hwif) { <------>ide_drive_t *drive; <------>int i; <------>ide_port_for_each_present_dev(i, drive, hwif) { <------><------>device_unregister(&drive->gendev); <------><------>wait_for_completion(&drive->gendev_rel_comp); <------>} } void ide_port_unregister_devices(ide_hwif_t *hwif) { <------>mutex_lock(&ide_cfg_mtx); <------>__ide_port_unregister_devices(hwif); <------>hwif->present = 0; <------>ide_port_init_devices_data(hwif); <------>mutex_unlock(&ide_cfg_mtx); } EXPORT_SYMBOL_GPL(ide_port_unregister_devices); /** * ide_unregister - free an IDE interface * @hwif: IDE interface * * Perform the final unregister of an IDE interface. * * Locking: * The caller must not hold the IDE locks. * * It is up to the caller to be sure there is no pending I/O here, * and that the interface will not be reopened (present/vanishing * locking isn't yet done BTW). */ static void ide_unregister(ide_hwif_t *hwif) { <------>BUG_ON(in_interrupt()); <------>BUG_ON(irqs_disabled()); <------>mutex_lock(&ide_cfg_mtx); <------>if (hwif->present) { <------><------>__ide_port_unregister_devices(hwif); <------><------>hwif->present = 0; <------>} <------>ide_proc_unregister_port(hwif); <------>if (!hwif->host->get_lock) <------><------>free_irq(hwif->irq, hwif); <------>device_unregister(hwif->portdev); <------>device_unregister(&hwif->gendev); <------>wait_for_completion(&hwif->gendev_rel_comp); <------>/* <------> * Remove us from the kernel's knowledge <------> */ <------>blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<<PARTN_BITS); <------>kfree(hwif->sg_table); <------>unregister_blkdev(hwif->major, hwif->name); <------>ide_release_dma_engine(hwif); <------>mutex_unlock(&ide_cfg_mtx); } void ide_host_free(struct ide_host *host) { <------>ide_hwif_t *hwif; <------>int i; <------>ide_host_for_each_port(i, hwif, host) { <------><------>if (hwif) <------><------><------>ide_port_free(hwif); <------>} <------>kfree(host); } EXPORT_SYMBOL_GPL(ide_host_free); void ide_host_remove(struct ide_host *host) { <------>ide_hwif_t *hwif; <------>int i; <------>ide_host_for_each_port(i, hwif, host) { <------><------>if (hwif) <------><------><------>ide_unregister(hwif); <------>} <------>ide_host_free(host); } EXPORT_SYMBOL_GPL(ide_host_remove); void ide_port_scan(ide_hwif_t *hwif) { <------>int rc; <------>ide_port_apply_params(hwif); <------>ide_port_cable_detect(hwif); <------>hwif->port_flags |= IDE_PFLAG_PROBING; <------>ide_port_init_devices(hwif); <------>rc = ide_probe_port(hwif); <------>hwif->port_flags &= ~IDE_PFLAG_PROBING; <------>if (rc < 0) <------><------>return; <------>hwif->present = 1; <------>ide_port_tune_devices(hwif); <------>ide_port_setup_devices(hwif); <------>ide_acpi_port_init_devices(hwif); <------>hwif_register_devices(hwif); <------>ide_proc_port_register_devices(hwif); } EXPORT_SYMBOL_GPL(ide_port_scan);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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