1 // SPDX-License-Identifier: GPL-2.0
10 	ide_hwif_t *hwif = drive->hwif;  in generic_ide_suspend()
17 		if ((drive->dn & 1) == 0 || pair == NULL)  in generic_ide_suspend()
22 	rq = blk_get_request(drive->queue, REQ_OP_DRV_IN, 0);  in generic_ide_suspend()
23 	ide_req(rq)->type = ATA_PRIV_PM_SUSPEND;  in generic_ide_suspend()
24 	ide_req(rq)->special = &rqpm;  in generic_ide_suspend()
30 	blk_execute_rq(drive->queue, NULL, rq, 0);  in generic_ide_suspend()
31 	ret = scsi_req(rq)->result ? -EIO : 0;  in generic_ide_suspend()
36 		if ((drive->dn & 1) || pair == NULL)  in generic_ide_suspend()
45 	struct request_queue *q = rq->q;  in ide_pm_execute_rq()
48 		rq->rq_flags |= RQF_QUIET;  in ide_pm_execute_rq()
49 		scsi_req(rq)->result = -ENXIO;  in ide_pm_execute_rq()
51 		return -ENXIO;  in ide_pm_execute_rq()
55 	return scsi_req(rq)->result ? -EIO : 0;  in ide_pm_execute_rq()
62 	ide_hwif_t *hwif = drive->hwif;  in generic_ide_resume()
67 	blk_mq_start_stopped_hw_queues(drive->queue, true);  in generic_ide_resume()
71 		if ((drive->dn & 1) == 0 || pair == NULL) {  in generic_ide_resume()
80 	rq = blk_get_request(drive->queue, REQ_OP_DRV_IN, BLK_MQ_REQ_PM);  in generic_ide_resume()
81 	ide_req(rq)->type = ATA_PRIV_PM_RESUME;  in generic_ide_resume()
82 	ide_req(rq)->special = &rqpm;  in generic_ide_resume()
89 	if (err == 0 && dev->driver) {  in generic_ide_resume()
90 		struct ide_driver *drv = to_ide_driver(dev->driver);  in generic_ide_resume()
92 		if (drv->resume)  in generic_ide_resume()
93 			drv->resume(drive);  in generic_ide_resume()
101 	struct ide_pm_state *pm = ide_req(rq)->special;  in ide_complete_power_step()  local
105 		drive->name, pm->pm_step);  in ide_complete_power_step()
107 	if (drive->media != ide_disk)  in ide_complete_power_step()
110 	switch (pm->pm_step) {  in ide_complete_power_step()
112 		if (pm->pm_state == PM_EVENT_FREEZE)  in ide_complete_power_step()
113 			pm->pm_step = IDE_PM_COMPLETED;  in ide_complete_power_step()
115 			pm->pm_step = IDE_PM_STANDBY;  in ide_complete_power_step()
118 		pm->pm_step = IDE_PM_COMPLETED;  in ide_complete_power_step()
121 		pm->pm_step = IDE_PM_IDLE;  in ide_complete_power_step()
124 		pm->pm_step = IDE_PM_RESTORE_DMA;  in ide_complete_power_step()
131 	struct ide_pm_state *pm = ide_req(rq)->special;  in ide_start_power_step()  local
134 	switch (pm->pm_step) {  in ide_start_power_step()
136 		if (drive->media != ide_disk)  in ide_start_power_step()
139 		if (ata_id_flush_enabled(drive->id) == 0 ||  in ide_start_power_step()
140 		    (drive->dev_flags & IDE_DFLAG_WCACHE) == 0) {  in ide_start_power_step()
144 		if (ata_id_flush_ext_enabled(drive->id))  in ide_start_power_step()
157 		if (drive->media != ide_disk)  in ide_start_power_step()
158 			pm->pm_step = IDE_PM_RESTORE_DMA;  in ide_start_power_step()
171 		if (drive->hwif->dma_ops == NULL)  in ide_start_power_step()
180 	pm->pm_step = IDE_PM_COMPLETED;  in ide_start_power_step()
193  *	ide_complete_pm_rq - end the current Power Management request
197  *	This function cleans up the current PM request and stops the queue
202 	struct request_queue *q = drive->queue;  in ide_complete_pm_rq()
203 	struct ide_pm_state *pm = ide_req(rq)->special;  in ide_complete_pm_rq()  local
206 	if (pm->pm_step != IDE_PM_COMPLETED)  in ide_complete_pm_rq()
210 	printk("%s: completing PM request, %s\n", drive->name,  in ide_complete_pm_rq()
211 	       (ide_req(rq)->type == ATA_PRIV_PM_SUSPEND) ? "suspend" : "resume");  in ide_complete_pm_rq()
213 	if (ide_req(rq)->type == ATA_PRIV_PM_SUSPEND)  in ide_complete_pm_rq()
216 		drive->dev_flags &= ~IDE_DFLAG_BLOCKED;  in ide_complete_pm_rq()
218 	drive->hwif->rq = NULL;  in ide_complete_pm_rq()
225 	struct ide_pm_state *pm = ide_req(rq)->special;  in ide_check_pm_state()  local
228 	    ide_req(rq)->type == ATA_PRIV_PM_SUSPEND &&  in ide_check_pm_state()
229 	    pm->pm_step == IDE_PM_START_SUSPEND)  in ide_check_pm_state()
231 		drive->dev_flags |= IDE_DFLAG_BLOCKED;  in ide_check_pm_state()
233 	         ide_req(rq)->type == ATA_PRIV_PM_RESUME &&  in ide_check_pm_state()
234 		 pm->pm_step == IDE_PM_START_RESUME) {  in ide_check_pm_state()
240 		 * the bus may be broken enough to walk on our toes at this  in ide_check_pm_state()
243 		ide_hwif_t *hwif = drive->hwif;  in ide_check_pm_state()
244 		const struct ide_tp_ops *tp_ops = hwif->tp_ops;  in ide_check_pm_state()
245 		struct request_queue *q = drive->queue;  in ide_check_pm_state()
248 		printk("%s: Wakeup request inited, waiting for !BSY...\n", drive->name);  in ide_check_pm_state()
252 			printk(KERN_WARNING "%s: bus not ready on wakeup\n", drive->name);  in ide_check_pm_state()
253 		tp_ops->dev_select(drive);  in ide_check_pm_state()
254 		tp_ops->write_devctl(hwif, ATA_DEVCTL_OBS);  in ide_check_pm_state()
257 			printk(KERN_WARNING "%s: drive not ready on wakeup\n", drive->name);  in ide_check_pm_state()