2 #include <linux/kernel.h>
5 DEFINE_MUTEX(ide_setting_mtx);
7 ide_devset_get(io_32bit, io_32bit);
9 static int set_io_32bit(ide_drive_t *drive, int arg)
11 if (drive->dev_flags & IDE_DFLAG_NO_IO_32BIT)
14 if (arg < 0 || arg > 1 + (SUPPORT_VLB_SYNC << 1))
17 drive->io_32bit = arg;
22 ide_devset_get_flag(ksettings, IDE_DFLAG_KEEP_SETTINGS);
24 static int set_ksettings(ide_drive_t *drive, int arg)
26 if (arg < 0 || arg > 1)
30 drive->dev_flags |= IDE_DFLAG_KEEP_SETTINGS;
32 drive->dev_flags &= ~IDE_DFLAG_KEEP_SETTINGS;
37 ide_devset_get_flag(using_dma, IDE_DFLAG_USING_DMA);
39 static int set_using_dma(ide_drive_t *drive, int arg)
41 #ifdef CONFIG_BLK_DEV_IDEDMA
44 if (arg < 0 || arg > 1)
47 if (ata_id_has_dma(drive->id) == 0)
50 if (drive->hwif->dma_ops == NULL)
56 if (ide_set_dma(drive))
64 if (arg < 0 || arg > 1)
72 * handle HDIO_SET_PIO_MODE ioctl abusers here, eventually it will go away
74 static int set_pio_mode_abuse(ide_hwif_t *hwif, u8 req_pio)
83 return (hwif->host_flags & IDE_HFLAG_ABUSE_DMA_MODES) ? 1 : 0;
86 return (hwif->host_flags & IDE_HFLAG_ABUSE_PREFETCH) ? 1 : 0;
89 return (hwif->host_flags & IDE_HFLAG_ABUSE_FAST_DEVSEL) ? 1 : 0;
95 static int set_pio_mode(ide_drive_t *drive, int arg)
97 ide_hwif_t *hwif = drive->hwif;
98 const struct ide_port_ops *port_ops = hwif->port_ops;
100 if (arg < 0 || arg > 255)
103 if (port_ops == NULL || port_ops->set_pio_mode == NULL ||
104 (hwif->host_flags & IDE_HFLAG_NO_SET_MODE))
107 if (set_pio_mode_abuse(drive->hwif, arg)) {
108 if (arg == 8 || arg == 9) {
111 /* take lock for IDE_DFLAG_[NO_]UNMASK/[NO_]IO_32BIT */
112 spin_lock_irqsave(&hwif->lock, flags);
113 port_ops->set_pio_mode(drive, arg);
114 spin_unlock_irqrestore(&hwif->lock, flags);
116 port_ops->set_pio_mode(drive, arg);
118 int keep_dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
120 ide_set_pio(drive, arg);
122 if (hwif->host_flags & IDE_HFLAG_SET_PIO_MODE_KEEP_DMA) {
131 ide_devset_get_flag(unmaskirq, IDE_DFLAG_UNMASK);
133 static int set_unmaskirq(ide_drive_t *drive, int arg)
135 if (drive->dev_flags & IDE_DFLAG_NO_UNMASK)
138 if (arg < 0 || arg > 1)
142 drive->dev_flags |= IDE_DFLAG_UNMASK;
144 drive->dev_flags &= ~IDE_DFLAG_UNMASK;
149 ide_ext_devset_rw_sync(io_32bit, io_32bit);
150 ide_ext_devset_rw_sync(keepsettings, ksettings);
151 ide_ext_devset_rw_sync(unmaskirq, unmaskirq);
152 ide_ext_devset_rw_sync(using_dma, using_dma);
153 __IDE_DEVSET(pio_mode, DS_SYNC, NULL, set_pio_mode);
155 int ide_devset_execute(ide_drive_t *drive, const struct ide_devset *setting,
158 struct request_queue *q = drive->queue;
162 if (!(setting->flags & DS_SYNC))
163 return setting->set(drive, arg);
165 rq = blk_get_request(q, READ, __GFP_WAIT);
166 rq->cmd_type = REQ_TYPE_SPECIAL;
168 rq->cmd[0] = REQ_DEVSET_EXEC;
169 *(int *)&rq->cmd[1] = arg;
170 rq->special = setting->set;
172 if (blk_execute_rq(q, NULL, rq, 0))
179 ide_startstop_t ide_do_devset(ide_drive_t *drive, struct request *rq)
181 int err, (*setfunc)(ide_drive_t *, int) = rq->special;
183 err = setfunc(drive, *(int *)&rq->cmd[1]);
186 ide_complete_rq(drive, err, blk_rq_bytes(rq));