Lines Matching +full:phy +full:- +full:input +full:- +full:delay +full:- +full:legacy
1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * libata-sff.c - helper library for PCI IDE BMDMA
5 * Copyright 2003-2006 Red Hat, Inc. All rights reserved.
6 * Copyright 2003-2006 Jeff Garzik
9 * as Documentation/driver-api/libata.rst
12 * http://www.sata-io.org/
54 * ata_sff_check_status - Read device status reg & clear interrupt
57 * Reads ATA taskfile status register for currently-selected device
66 return ioread8(ap->ioaddr.status_addr); in ata_sff_check_status()
71 * ata_sff_altstatus - Read device alternate status reg
75 * Reads ATA alternate status register for currently-selected device
88 if (ap->ops->sff_check_altstatus) { in ata_sff_altstatus()
89 tmp = ap->ops->sff_check_altstatus(ap); in ata_sff_altstatus()
92 if (ap->ioaddr.altstatus_addr) { in ata_sff_altstatus()
93 tmp = ioread8(ap->ioaddr.altstatus_addr); in ata_sff_altstatus()
105 * ata_sff_irq_status - Check if the device is busy
124 status = ap->ops->sff_check_status(ap); in ata_sff_irq_status()
129 * ata_sff_sync - Flush writes
146 * ata_sff_pause - Flush writes and wait 400nS
165 * ata_sff_dma_pause - Pause before commencing DMA
175 * An altstatus read will cause the needed delay without in ata_sff_dma_pause()
189 u8 status = link->ap->ops->sff_check_status(link->ap); in ata_sff_check_ready()
195 * ata_sff_wait_ready - sleep until BSY clears, or timeout
206 * 0 on success, -errno otherwise.
215 * ata_sff_set_devctl - Write device control reg
229 if (ap->ops->sff_set_devctl) { in ata_sff_set_devctl()
230 ap->ops->sff_set_devctl(ap, ctl); in ata_sff_set_devctl()
233 if (ap->ioaddr.ctl_addr) { in ata_sff_set_devctl()
234 iowrite8(ctl, ap->ioaddr.ctl_addr); in ata_sff_set_devctl()
242 * ata_sff_dev_select - Select device 0/1 on ATA bus
264 iowrite8(tmp, ap->ioaddr.device_addr); in ata_sff_dev_select()
270 * ata_dev_select - Select device 0/1 on ATA bus
273 * @wait: non-zero to wait for Status register BSY bit to clear
274 * @can_sleep: non-zero if context allows sleeping
280 * This is a high-level version of ata_sff_dev_select(), which
293 ap->ops->sff_dev_select(ap, device); in ata_dev_select()
296 if (can_sleep && ap->link.device[device].class == ATA_DEV_ATAPI) in ata_dev_select()
303 * ata_sff_irq_on - Enable interrupts on a port.
306 * Enable interrupts on a legacy IDE device using MMIO or PIO,
317 if (ap->ops->sff_irq_on) { in ata_sff_irq_on()
318 ap->ops->sff_irq_on(ap); in ata_sff_irq_on()
322 ap->ctl &= ~ATA_NIEN; in ata_sff_irq_on()
323 ap->last_ctl = ap->ctl; in ata_sff_irq_on()
325 ata_sff_set_devctl(ap, ap->ctl); in ata_sff_irq_on()
328 if (ap->ops->sff_irq_clear) in ata_sff_irq_on()
329 ap->ops->sff_irq_clear(ap); in ata_sff_irq_on()
334 * ata_sff_tf_load - send taskfile registers to host controller
345 struct ata_ioports *ioaddr = &ap->ioaddr; in ata_sff_tf_load()
346 unsigned int is_addr = tf->flags & ATA_TFLAG_ISADDR; in ata_sff_tf_load()
348 if (tf->ctl != ap->last_ctl) { in ata_sff_tf_load()
349 if (ioaddr->ctl_addr) in ata_sff_tf_load()
350 iowrite8(tf->ctl, ioaddr->ctl_addr); in ata_sff_tf_load()
351 ap->last_ctl = tf->ctl; in ata_sff_tf_load()
355 if (is_addr && (tf->flags & ATA_TFLAG_LBA48)) { in ata_sff_tf_load()
356 WARN_ON_ONCE(!ioaddr->ctl_addr); in ata_sff_tf_load()
357 iowrite8(tf->hob_feature, ioaddr->feature_addr); in ata_sff_tf_load()
358 iowrite8(tf->hob_nsect, ioaddr->nsect_addr); in ata_sff_tf_load()
359 iowrite8(tf->hob_lbal, ioaddr->lbal_addr); in ata_sff_tf_load()
360 iowrite8(tf->hob_lbam, ioaddr->lbam_addr); in ata_sff_tf_load()
361 iowrite8(tf->hob_lbah, ioaddr->lbah_addr); in ata_sff_tf_load()
365 iowrite8(tf->feature, ioaddr->feature_addr); in ata_sff_tf_load()
366 iowrite8(tf->nsect, ioaddr->nsect_addr); in ata_sff_tf_load()
367 iowrite8(tf->lbal, ioaddr->lbal_addr); in ata_sff_tf_load()
368 iowrite8(tf->lbam, ioaddr->lbam_addr); in ata_sff_tf_load()
369 iowrite8(tf->lbah, ioaddr->lbah_addr); in ata_sff_tf_load()
372 if (tf->flags & ATA_TFLAG_DEVICE) in ata_sff_tf_load()
373 iowrite8(tf->device, ioaddr->device_addr); in ata_sff_tf_load()
380 * ata_sff_tf_read - input device's ATA taskfile shadow registers
381 * @ap: Port from which input is read
382 * @tf: ATA taskfile register set for storing input
384 * Reads ATA taskfile registers for currently-selected device
394 struct ata_ioports *ioaddr = &ap->ioaddr; in ata_sff_tf_read()
396 tf->status = ata_sff_check_status(ap); in ata_sff_tf_read()
397 tf->error = ioread8(ioaddr->error_addr); in ata_sff_tf_read()
398 tf->nsect = ioread8(ioaddr->nsect_addr); in ata_sff_tf_read()
399 tf->lbal = ioread8(ioaddr->lbal_addr); in ata_sff_tf_read()
400 tf->lbam = ioread8(ioaddr->lbam_addr); in ata_sff_tf_read()
401 tf->lbah = ioread8(ioaddr->lbah_addr); in ata_sff_tf_read()
402 tf->device = ioread8(ioaddr->device_addr); in ata_sff_tf_read()
404 if (tf->flags & ATA_TFLAG_LBA48) { in ata_sff_tf_read()
405 if (likely(ioaddr->ctl_addr)) { in ata_sff_tf_read()
406 iowrite8(tf->ctl | ATA_HOB, ioaddr->ctl_addr); in ata_sff_tf_read()
407 tf->hob_feature = ioread8(ioaddr->error_addr); in ata_sff_tf_read()
408 tf->hob_nsect = ioread8(ioaddr->nsect_addr); in ata_sff_tf_read()
409 tf->hob_lbal = ioread8(ioaddr->lbal_addr); in ata_sff_tf_read()
410 tf->hob_lbam = ioread8(ioaddr->lbam_addr); in ata_sff_tf_read()
411 tf->hob_lbah = ioread8(ioaddr->lbah_addr); in ata_sff_tf_read()
412 iowrite8(tf->ctl, ioaddr->ctl_addr); in ata_sff_tf_read()
413 ap->last_ctl = tf->ctl; in ata_sff_tf_read()
421 * ata_sff_exec_command - issue ATA command to host controller
433 iowrite8(tf->command, ap->ioaddr.command_addr); in ata_sff_exec_command()
439 * ata_tf_to_host - issue ATA taskfile to host controller
456 ap->ops->sff_tf_load(ap, tf); in ata_tf_to_host()
458 ap->ops->sff_exec_command(ap, tf); in ata_tf_to_host()
462 * ata_sff_data_xfer - Transfer data by PIO
479 struct ata_port *ap = qc->dev->link->ap; in ata_sff_data_xfer()
480 void __iomem *data_addr = ap->ioaddr.data_addr; in ata_sff_data_xfer()
494 buf += buflen - 1; in ata_sff_data_xfer()
515 * ata_sff_data_xfer32 - Transfer data by PIO
534 struct ata_device *dev = qc->dev; in ata_sff_data_xfer32()
535 struct ata_port *ap = dev->link->ap; in ata_sff_data_xfer32()
536 void __iomem *data_addr = ap->ioaddr.data_addr; in ata_sff_data_xfer32()
540 if (!(ap->pflags & ATA_PFLAG_PIO32)) in ata_sff_data_xfer32()
554 buf += buflen - slop; in ata_sff_data_xfer32()
581 bool do_write = (qc->tf.flags & ATA_TFLAG_WRITE); in ata_pio_xfer()
585 qc->ap->ops->sff_data_xfer(qc, buf + offset, xfer_size, do_write); in ata_pio_xfer()
593 * ata_pio_sector - Transfer a sector of data.
596 * Transfer qc->sect_size bytes of data from/to the ATA device.
603 struct ata_port *ap = qc->ap; in ata_pio_sector()
607 if (!qc->cursg) { in ata_pio_sector()
608 qc->curbytes = qc->nbytes; in ata_pio_sector()
611 if (qc->curbytes == qc->nbytes - qc->sect_size) in ata_pio_sector()
612 ap->hsm_task_state = HSM_ST_LAST; in ata_pio_sector()
614 page = sg_page(qc->cursg); in ata_pio_sector()
615 offset = qc->cursg->offset + qc->cursg_ofs; in ata_pio_sector()
621 trace_ata_sff_pio_transfer_data(qc, offset, qc->sect_size); in ata_pio_sector()
628 if (offset + qc->sect_size > PAGE_SIZE) { in ata_pio_sector()
629 unsigned int split_len = PAGE_SIZE - offset; in ata_pio_sector()
633 qc->sect_size - split_len); in ata_pio_sector()
635 ata_pio_xfer(qc, page, offset, qc->sect_size); in ata_pio_sector()
638 qc->curbytes += qc->sect_size; in ata_pio_sector()
639 qc->cursg_ofs += qc->sect_size; in ata_pio_sector()
641 if (qc->cursg_ofs == qc->cursg->length) { in ata_pio_sector()
642 qc->cursg = sg_next(qc->cursg); in ata_pio_sector()
643 if (!qc->cursg) in ata_pio_sector()
644 ap->hsm_task_state = HSM_ST_LAST; in ata_pio_sector()
645 qc->cursg_ofs = 0; in ata_pio_sector()
650 * ata_pio_sectors - Transfer one or many sectors.
661 if (is_multi_taskfile(&qc->tf)) { in ata_pio_sectors()
665 WARN_ON_ONCE(qc->dev->multi_count == 0); in ata_pio_sectors()
667 nsect = min((qc->nbytes - qc->curbytes) / qc->sect_size, in ata_pio_sectors()
668 qc->dev->multi_count); in ata_pio_sectors()
669 while (nsect--) in ata_pio_sectors()
674 ata_sff_sync(qc->ap); /* flush */ in ata_pio_sectors()
678 * atapi_send_cdb - Write CDB bytes to hardware
691 trace_atapi_send_cdb(qc, 0, qc->dev->cdb_len); in atapi_send_cdb()
692 WARN_ON_ONCE(qc->dev->cdb_len < 12); in atapi_send_cdb()
694 ap->ops->sff_data_xfer(qc, qc->cdb, qc->dev->cdb_len, 1); in atapi_send_cdb()
696 /* FIXME: If the CDB is for DMA do we need to do the transition delay in atapi_send_cdb()
698 switch (qc->tf.protocol) { in atapi_send_cdb()
700 ap->hsm_task_state = HSM_ST; in atapi_send_cdb()
703 ap->hsm_task_state = HSM_ST_LAST; in atapi_send_cdb()
707 ap->hsm_task_state = HSM_ST_LAST; in atapi_send_cdb()
709 trace_ata_bmdma_start(ap, &qc->tf, qc->tag); in atapi_send_cdb()
710 ap->ops->bmdma_start(qc); in atapi_send_cdb()
719 * __atapi_pio_bytes - Transfer data from/to the ATAPI device.
731 int rw = (qc->tf.flags & ATA_TFLAG_WRITE) ? WRITE : READ; in __atapi_pio_bytes()
732 struct ata_port *ap = qc->ap; in __atapi_pio_bytes()
733 struct ata_device *dev = qc->dev; in __atapi_pio_bytes()
734 struct ata_eh_info *ehi = &dev->link->eh_info; in __atapi_pio_bytes()
741 sg = qc->cursg; in __atapi_pio_bytes()
745 qc->nbytes, qc->curbytes, bytes); in __atapi_pio_bytes()
746 return -1; in __atapi_pio_bytes()
750 offset = sg->offset + qc->cursg_ofs; in __atapi_pio_bytes()
757 count = min(sg->length - qc->cursg_ofs, bytes); in __atapi_pio_bytes()
760 count = min(count, (unsigned int)PAGE_SIZE - offset); in __atapi_pio_bytes()
766 consumed = ap->ops->sff_data_xfer(qc, buf + offset, count, rw); in __atapi_pio_bytes()
769 bytes -= min(bytes, consumed); in __atapi_pio_bytes()
770 qc->curbytes += count; in __atapi_pio_bytes()
771 qc->cursg_ofs += count; in __atapi_pio_bytes()
773 if (qc->cursg_ofs == sg->length) { in __atapi_pio_bytes()
774 qc->cursg = sg_next(qc->cursg); in __atapi_pio_bytes()
775 qc->cursg_ofs = 0; in __atapi_pio_bytes()
779 * There used to be a WARN_ON_ONCE(qc->cursg && count != consumed); in __atapi_pio_bytes()
790 * atapi_pio_bytes - Transfer data from/to the ATAPI device.
800 struct ata_port *ap = qc->ap; in atapi_pio_bytes()
801 struct ata_device *dev = qc->dev; in atapi_pio_bytes()
802 struct ata_eh_info *ehi = &dev->link->eh_info; in atapi_pio_bytes()
804 int i_write, do_write = (qc->tf.flags & ATA_TFLAG_WRITE) ? 1 : 0; in atapi_pio_bytes()
806 /* Abuse qc->result_tf for temp storage of intermediate TF in atapi_pio_bytes()
808 * For normal completion, qc->result_tf is not relevant. For in atapi_pio_bytes()
809 * error, qc->result_tf is later overwritten by ata_qc_complete(). in atapi_pio_bytes()
810 * So, the correctness of qc->result_tf is not affected. in atapi_pio_bytes()
812 ap->ops->sff_tf_read(ap, &qc->result_tf); in atapi_pio_bytes()
813 ireason = qc->result_tf.nsect; in atapi_pio_bytes()
814 bc_lo = qc->result_tf.lbam; in atapi_pio_bytes()
815 bc_hi = qc->result_tf.lbah; in atapi_pio_bytes()
840 qc->err_mask |= AC_ERR_HSM; in atapi_pio_bytes()
841 ap->hsm_task_state = HSM_ST_ERR; in atapi_pio_bytes()
845 * ata_hsm_ok_in_wq - Check if the qc can be handled in the workqueue.
855 if (qc->tf.flags & ATA_TFLAG_POLLING) in ata_hsm_ok_in_wq()
858 if (ap->hsm_task_state == HSM_ST_FIRST) { in ata_hsm_ok_in_wq()
859 if (qc->tf.protocol == ATA_PROT_PIO && in ata_hsm_ok_in_wq()
860 (qc->tf.flags & ATA_TFLAG_WRITE)) in ata_hsm_ok_in_wq()
863 if (ata_is_atapi(qc->tf.protocol) && in ata_hsm_ok_in_wq()
864 !(qc->dev->flags & ATA_DFLAG_CDB_INTR)) in ata_hsm_ok_in_wq()
872 * ata_hsm_qc_complete - finish a qc running on standard HSM
884 struct ata_port *ap = qc->ap; in ata_hsm_qc_complete()
888 qc = ata_qc_from_tag(ap, qc->tag); in ata_hsm_qc_complete()
890 if (likely(!(qc->err_mask & AC_ERR_HSM))) { in ata_hsm_qc_complete()
897 if (likely(!(qc->err_mask & AC_ERR_HSM))) in ata_hsm_qc_complete()
905 * ata_sff_hsm_move - move the HSM to the next state.
917 struct ata_link *link = qc->dev->link; in ata_sff_hsm_move()
918 struct ata_eh_info *ehi = &link->eh_info; in ata_sff_hsm_move()
921 lockdep_assert_held(ap->lock); in ata_sff_hsm_move()
923 WARN_ON_ONCE((qc->flags & ATA_QCFLAG_ACTIVE) == 0); in ata_sff_hsm_move()
927 * in_wq is not equivalent to (qc->tf.flags & ATA_TFLAG_POLLING). in ata_sff_hsm_move()
934 switch (ap->hsm_task_state) { in ata_sff_hsm_move()
942 poll_next = (qc->tf.flags & ATA_TFLAG_POLLING); in ata_sff_hsm_move()
949 qc->err_mask |= AC_ERR_DEV; in ata_sff_hsm_move()
954 qc->err_mask |= AC_ERR_HSM; in ata_sff_hsm_move()
957 ap->hsm_task_state = HSM_ST_ERR; in ata_sff_hsm_move()
973 if (!(qc->dev->horkage & ATA_HORKAGE_STUCK_ERR)) { in ata_sff_hsm_move()
977 qc->err_mask |= AC_ERR_HSM; in ata_sff_hsm_move()
978 ap->hsm_task_state = HSM_ST_ERR; in ata_sff_hsm_move()
983 if (qc->tf.protocol == ATA_PROT_PIO) { in ata_sff_hsm_move()
992 ap->hsm_task_state = HSM_ST; in ata_sff_hsm_move()
1005 if (qc->tf.protocol == ATAPI_PROT_PIO) { in ata_sff_hsm_move()
1011 ap->hsm_task_state = HSM_ST_LAST; in ata_sff_hsm_move()
1022 ata_ehi_push_desc(ehi, "ST-ATAPI: " in ata_sff_hsm_move()
1025 qc->err_mask |= AC_ERR_HSM; in ata_sff_hsm_move()
1026 ap->hsm_task_state = HSM_ST_ERR; in ata_sff_hsm_move()
1032 if (unlikely(ap->hsm_task_state == HSM_ST_ERR)) in ata_sff_hsm_move()
1042 qc->err_mask |= AC_ERR_DEV; in ata_sff_hsm_move()
1048 if (qc->dev->horkage & in ata_sff_hsm_move()
1050 qc->err_mask |= in ata_sff_hsm_move()
1057 ata_ehi_push_desc(ehi, "ST-ATA: " in ata_sff_hsm_move()
1060 qc->err_mask |= AC_ERR_HSM | in ata_sff_hsm_move()
1064 ap->hsm_task_state = HSM_ST_ERR; in ata_sff_hsm_move()
1080 qc->err_mask |= AC_ERR_DEV; in ata_sff_hsm_move()
1082 if (!(qc->tf.flags & ATA_TFLAG_WRITE)) { in ata_sff_hsm_move()
1088 ata_ehi_push_desc(ehi, "ST-ATA: " in ata_sff_hsm_move()
1091 qc->err_mask |= AC_ERR_HSM; in ata_sff_hsm_move()
1102 qc->err_mask |= AC_ERR_NODEV_HINT; in ata_sff_hsm_move()
1108 ap->hsm_task_state = HSM_ST_ERR; in ata_sff_hsm_move()
1114 if (ap->hsm_task_state == HSM_ST_LAST && in ata_sff_hsm_move()
1115 (!(qc->tf.flags & ATA_TFLAG_WRITE))) { in ata_sff_hsm_move()
1127 qc->err_mask |= __ac_err_mask(status); in ata_sff_hsm_move()
1128 ap->hsm_task_state = HSM_ST_ERR; in ata_sff_hsm_move()
1135 WARN_ON_ONCE(qc->err_mask & (AC_ERR_DEV | AC_ERR_HSM)); in ata_sff_hsm_move()
1137 ap->hsm_task_state = HSM_ST_IDLE; in ata_sff_hsm_move()
1146 ap->hsm_task_state = HSM_ST_IDLE; in ata_sff_hsm_move()
1156 ap->print_id, ap->hsm_task_state); in ata_sff_hsm_move()
1169 void ata_sff_queue_delayed_work(struct delayed_work *dwork, unsigned long delay) in ata_sff_queue_delayed_work() argument
1171 queue_delayed_work(ata_sff_wq, dwork, delay); in ata_sff_queue_delayed_work()
1175 void ata_sff_queue_pio_task(struct ata_link *link, unsigned long delay) in ata_sff_queue_pio_task() argument
1177 struct ata_port *ap = link->ap; in ata_sff_queue_pio_task()
1179 WARN_ON((ap->sff_pio_task_link != NULL) && in ata_sff_queue_pio_task()
1180 (ap->sff_pio_task_link != link)); in ata_sff_queue_pio_task()
1181 ap->sff_pio_task_link = link; in ata_sff_queue_pio_task()
1184 ata_sff_queue_delayed_work(&ap->sff_pio_task, msecs_to_jiffies(delay)); in ata_sff_queue_pio_task()
1192 cancel_delayed_work_sync(&ap->sff_pio_task); in ata_sff_flush_pio_task()
1202 spin_lock_irq(ap->lock); in ata_sff_flush_pio_task()
1203 ap->hsm_task_state = HSM_ST_IDLE; in ata_sff_flush_pio_task()
1204 spin_unlock_irq(ap->lock); in ata_sff_flush_pio_task()
1206 ap->sff_pio_task_link = NULL; in ata_sff_flush_pio_task()
1213 struct ata_link *link = ap->sff_pio_task_link; in ata_sff_pio_task()
1218 spin_lock_irq(ap->lock); in ata_sff_pio_task()
1220 BUG_ON(ap->sff_pio_task_link == NULL); in ata_sff_pio_task()
1222 qc = ata_qc_from_tag(ap, link->active_tag); in ata_sff_pio_task()
1224 ap->sff_pio_task_link = NULL; in ata_sff_pio_task()
1229 WARN_ON_ONCE(ap->hsm_task_state == HSM_ST_IDLE); in ata_sff_pio_task()
1234 * a chk-status or two. If not, the drive is probably seeking in ata_sff_pio_task()
1236 * chk-status again. If still busy, queue delayed work. in ata_sff_pio_task()
1240 spin_unlock_irq(ap->lock); in ata_sff_pio_task()
1242 spin_lock_irq(ap->lock); in ata_sff_pio_task()
1255 ap->sff_pio_task_link = NULL; in ata_sff_pio_task()
1265 spin_unlock_irq(ap->lock); in ata_sff_pio_task()
1269 * ata_sff_qc_issue - issue taskfile to a SFF controller
1283 struct ata_port *ap = qc->ap; in ata_sff_qc_issue()
1284 struct ata_link *link = qc->dev->link; in ata_sff_qc_issue()
1289 if (ap->flags & ATA_FLAG_PIO_POLLING) in ata_sff_qc_issue()
1290 qc->tf.flags |= ATA_TFLAG_POLLING; in ata_sff_qc_issue()
1293 ata_dev_select(ap, qc->dev->devno, 1, 0); in ata_sff_qc_issue()
1296 switch (qc->tf.protocol) { in ata_sff_qc_issue()
1298 if (qc->tf.flags & ATA_TFLAG_POLLING) in ata_sff_qc_issue()
1301 ata_tf_to_host(ap, &qc->tf, qc->tag); in ata_sff_qc_issue()
1302 ap->hsm_task_state = HSM_ST_LAST; in ata_sff_qc_issue()
1304 if (qc->tf.flags & ATA_TFLAG_POLLING) in ata_sff_qc_issue()
1310 if (qc->tf.flags & ATA_TFLAG_POLLING) in ata_sff_qc_issue()
1313 ata_tf_to_host(ap, &qc->tf, qc->tag); in ata_sff_qc_issue()
1315 if (qc->tf.flags & ATA_TFLAG_WRITE) { in ata_sff_qc_issue()
1317 ap->hsm_task_state = HSM_ST_FIRST; in ata_sff_qc_issue()
1325 ap->hsm_task_state = HSM_ST; in ata_sff_qc_issue()
1327 if (qc->tf.flags & ATA_TFLAG_POLLING) in ata_sff_qc_issue()
1340 if (qc->tf.flags & ATA_TFLAG_POLLING) in ata_sff_qc_issue()
1343 ata_tf_to_host(ap, &qc->tf, qc->tag); in ata_sff_qc_issue()
1345 ap->hsm_task_state = HSM_ST_FIRST; in ata_sff_qc_issue()
1348 if ((!(qc->dev->flags & ATA_DFLAG_CDB_INTR)) || in ata_sff_qc_issue()
1349 (qc->tf.flags & ATA_TFLAG_POLLING)) in ata_sff_qc_issue()
1362 * ata_sff_qc_fill_rtf - fill result TF using ->sff_tf_read
1366 * using ->sff_tf_read.
1373 qc->ap->ops->sff_tf_read(qc->ap, &qc->result_tf); in ata_sff_qc_fill_rtf()
1379 ap->stats.idle_irq++; in ata_sff_idle_irq()
1382 if ((ap->stats.idle_irq % 1000) == 0) { in ata_sff_idle_irq()
1383 ap->ops->sff_check_status(ap); in ata_sff_idle_irq()
1384 if (ap->ops->sff_irq_clear) in ata_sff_idle_irq()
1385 ap->ops->sff_irq_clear(ap); in ata_sff_idle_irq()
1402 switch (ap->hsm_task_state) { in __ata_sff_port_intr()
1404 /* Some pre-ATAPI-4 devices assert INTRQ in __ata_sff_port_intr()
1410 * need to check ata_is_atapi(qc->tf.protocol) again. in __ata_sff_port_intr()
1412 if (!(qc->dev->flags & ATA_DFLAG_CDB_INTR)) in __ata_sff_port_intr()
1426 qc->err_mask |= AC_ERR_HSM; in __ata_sff_port_intr()
1427 ap->hsm_task_state = HSM_ST_ERR; in __ata_sff_port_intr()
1433 if (ap->ops->sff_irq_clear) in __ata_sff_port_intr()
1434 ap->ops->sff_irq_clear(ap); in __ata_sff_port_intr()
1442 * ata_sff_port_intr - Handle SFF port interrupt
1469 /* TODO: make _irqsave conditional on x86 PCI IDE legacy mode */ in __ata_sff_interrupt()
1470 spin_lock_irqsave(&host->lock, flags); in __ata_sff_interrupt()
1474 for (i = 0; i < host->n_ports; i++) { in __ata_sff_interrupt()
1475 struct ata_port *ap = host->ports[i]; in __ata_sff_interrupt()
1478 qc = ata_qc_from_tag(ap, ap->link.active_tag); in __ata_sff_interrupt()
1480 if (!(qc->tf.flags & ATA_TFLAG_POLLING)) in __ata_sff_interrupt()
1496 for (i = 0; i < host->n_ports; i++) { in __ata_sff_interrupt()
1497 struct ata_port *ap = host->ports[i]; in __ata_sff_interrupt()
1502 if (!ap->ops->sff_irq_check || in __ata_sff_interrupt()
1503 !ap->ops->sff_irq_check(ap)) in __ata_sff_interrupt()
1507 ap->ops->sff_check_status(ap); in __ata_sff_interrupt()
1508 if (ap->ops->sff_irq_clear) in __ata_sff_interrupt()
1509 ap->ops->sff_irq_clear(ap); in __ata_sff_interrupt()
1512 if (!(ap->ops->sff_check_status(ap) & ATA_BUSY)) in __ata_sff_interrupt()
1527 spin_unlock_irqrestore(&host->lock, flags); in __ata_sff_interrupt()
1533 * ata_sff_interrupt - Default SFF ATA host interrupt handler
1553 * ata_sff_lost_interrupt - Check for an apparent lost interrupt
1571 qc = ata_qc_from_tag(ap, ap->link.active_tag); in ata_sff_lost_interrupt()
1572 /* We cannot lose an interrupt on a non-existent or polled command */ in ata_sff_lost_interrupt()
1573 if (!qc || qc->tf.flags & ATA_TFLAG_POLLING) in ata_sff_lost_interrupt()
1575 /* See if the controller thinks it is still busy - if so the command in ata_sff_lost_interrupt()
1592 * ata_sff_freeze - Freeze SFF controller port
1602 ap->ctl |= ATA_NIEN; in ata_sff_freeze()
1603 ap->last_ctl = ap->ctl; in ata_sff_freeze()
1605 ata_sff_set_devctl(ap, ap->ctl); in ata_sff_freeze()
1611 ap->ops->sff_check_status(ap); in ata_sff_freeze()
1613 if (ap->ops->sff_irq_clear) in ata_sff_freeze()
1614 ap->ops->sff_irq_clear(ap); in ata_sff_freeze()
1619 * ata_sff_thaw - Thaw SFF controller port
1629 /* clear & re-enable interrupts */ in ata_sff_thaw()
1630 ap->ops->sff_check_status(ap); in ata_sff_thaw()
1631 if (ap->ops->sff_irq_clear) in ata_sff_thaw()
1632 ap->ops->sff_irq_clear(ap); in ata_sff_thaw()
1638 * ata_sff_prereset - prepare SFF link for reset
1654 struct ata_eh_context *ehc = &link->eh_context; in ata_sff_prereset()
1657 /* The standard prereset is best-effort and always returns 0 */ in ata_sff_prereset()
1661 if (ehc->i.action & ATA_EH_HARDRESET) in ata_sff_prereset()
1667 if (rc && rc != -ENODEV) { in ata_sff_prereset()
1671 ehc->i.action |= ATA_EH_HARDRESET; in ata_sff_prereset()
1680 * ata_devchk - PATA device presence detection
1685 * Hale Landis's ATADRVR (www.ata-atapi.com), and
1701 struct ata_ioports *ioaddr = &ap->ioaddr; in ata_devchk()
1704 ap->ops->sff_dev_select(ap, device); in ata_devchk()
1706 iowrite8(0x55, ioaddr->nsect_addr); in ata_devchk()
1707 iowrite8(0xaa, ioaddr->lbal_addr); in ata_devchk()
1709 iowrite8(0xaa, ioaddr->nsect_addr); in ata_devchk()
1710 iowrite8(0x55, ioaddr->lbal_addr); in ata_devchk()
1712 iowrite8(0x55, ioaddr->nsect_addr); in ata_devchk()
1713 iowrite8(0xaa, ioaddr->lbal_addr); in ata_devchk()
1715 nsect = ioread8(ioaddr->nsect_addr); in ata_devchk()
1716 lbal = ioread8(ioaddr->lbal_addr); in ata_devchk()
1725 * ata_sff_dev_classify - Parse returned ATA device signature
1730 * After an event -- SRST, E.D.D., or SATA COMRESET -- occurs,
1731 * an ATA/ATAPI-defined set of values is placed in the ATA
1737 * and the spec-defined values examined by ata_dev_classify().
1743 * Device type - %ATA_DEV_ATA, %ATA_DEV_ATAPI or %ATA_DEV_NONE.
1748 struct ata_port *ap = dev->link->ap; in ata_sff_dev_classify()
1753 ap->ops->sff_dev_select(ap, dev->devno); in ata_sff_dev_classify()
1757 ap->ops->sff_tf_read(ap, &tf); in ata_sff_dev_classify()
1765 dev->horkage |= ATA_HORKAGE_DIAGNOSTIC; in ata_sff_dev_classify()
1768 else if ((dev->devno == 0) && (err == 0x81)) in ata_sff_dev_classify()
1784 if (present && (dev->horkage & ATA_HORKAGE_DIAGNOSTIC)) in ata_sff_dev_classify()
1790 if (ap->ops->sff_check_status(ap) == 0) in ata_sff_dev_classify()
1799 * ata_sff_wait_after_reset - wait for devices to become ready after reset
1812 * 0 on success, -ENODEV if some or all of devices in @devmask
1813 * don't seem to exist. -errno on other errors.
1818 struct ata_port *ap = link->ap; in ata_sff_wait_after_reset()
1819 struct ata_ioports *ioaddr = &ap->ioaddr; in ata_sff_wait_after_reset()
1828 /* -ENODEV means the odd clown forgot the D7 pulldown resistor in ata_sff_wait_after_reset()
1840 ap->ops->sff_dev_select(ap, 1); in ata_sff_wait_after_reset()
1849 nsect = ioread8(ioaddr->nsect_addr); in ata_sff_wait_after_reset()
1850 lbal = ioread8(ioaddr->lbal_addr); in ata_sff_wait_after_reset()
1858 if (rc != -ENODEV) in ata_sff_wait_after_reset()
1865 ap->ops->sff_dev_select(ap, 0); in ata_sff_wait_after_reset()
1867 ap->ops->sff_dev_select(ap, 1); in ata_sff_wait_after_reset()
1869 ap->ops->sff_dev_select(ap, 0); in ata_sff_wait_after_reset()
1878 struct ata_ioports *ioaddr = &ap->ioaddr; in ata_bus_softreset()
1880 if (ap->ioaddr.ctl_addr) { in ata_bus_softreset()
1882 iowrite8(ap->ctl, ioaddr->ctl_addr); in ata_bus_softreset()
1884 iowrite8(ap->ctl | ATA_SRST, ioaddr->ctl_addr); in ata_bus_softreset()
1886 iowrite8(ap->ctl, ioaddr->ctl_addr); in ata_bus_softreset()
1887 ap->last_ctl = ap->ctl; in ata_bus_softreset()
1891 return ata_sff_wait_after_reset(&ap->link, devmask, deadline); in ata_bus_softreset()
1895 * ata_sff_softreset - reset host port via ATA SRST
1906 * 0 on success, -errno otherwise.
1911 struct ata_port *ap = link->ap; in ata_sff_softreset()
1912 unsigned int slave_possible = ap->flags & ATA_FLAG_SLAVE_POSS; in ata_sff_softreset()
1924 ap->ops->sff_dev_select(ap, 0); in ata_sff_softreset()
1928 /* if link is occupied, -ENODEV too is an error */ in ata_sff_softreset()
1929 if (rc && (rc != -ENODEV || sata_scr_valid(link))) { in ata_sff_softreset()
1935 classes[0] = ata_sff_dev_classify(&link->device[0], in ata_sff_softreset()
1938 classes[1] = ata_sff_dev_classify(&link->device[1], in ata_sff_softreset()
1946 * sata_sff_hardreset - reset host port via SATA phy reset
1951 * SATA phy-reset host port using DET bits of SControl register,
1958 * 0 on success, -errno otherwise.
1963 struct ata_eh_context *ehc = &link->eh_context; in sata_sff_hardreset()
1971 *class = ata_sff_dev_classify(link->device, 1, NULL); in sata_sff_hardreset()
1978 * ata_sff_postreset - SFF postreset callback
1991 struct ata_port *ap = link->ap; in ata_sff_postreset()
1995 /* is double-select really necessary? */ in ata_sff_postreset()
1997 ap->ops->sff_dev_select(ap, 1); in ata_sff_postreset()
1999 ap->ops->sff_dev_select(ap, 0); in ata_sff_postreset()
2006 if (ata_sff_set_devctl(ap, ap->ctl)) in ata_sff_postreset()
2007 ap->last_ctl = ap->ctl; in ata_sff_postreset()
2012 * ata_sff_drain_fifo - Stock FIFO drain logic for SFF controllers
2027 if (qc == NULL || qc->dma_dir == DMA_TO_DEVICE) in ata_sff_drain_fifo()
2030 ap = qc->ap; in ata_sff_drain_fifo()
2032 for (count = 0; (ap->ops->sff_check_status(ap) & ATA_DRQ) in ata_sff_drain_fifo()
2034 ioread16(ap->ioaddr.data_addr); in ata_sff_drain_fifo()
2043 * ata_sff_error_handler - Stock error handler for SFF controller
2048 * use this EH as-is or with some added handling before and
2056 ata_reset_fn_t softreset = ap->ops->softreset; in ata_sff_error_handler()
2057 ata_reset_fn_t hardreset = ap->ops->hardreset; in ata_sff_error_handler()
2061 qc = __ata_qc_from_tag(ap, ap->link.active_tag); in ata_sff_error_handler()
2062 if (qc && !(qc->flags & ATA_QCFLAG_EH)) in ata_sff_error_handler()
2065 spin_lock_irqsave(ap->lock, flags); in ata_sff_error_handler()
2074 if (ap->ops->sff_drain_fifo) in ata_sff_error_handler()
2075 ap->ops->sff_drain_fifo(qc); in ata_sff_error_handler()
2077 spin_unlock_irqrestore(ap->lock, flags); in ata_sff_error_handler()
2079 /* ignore built-in hardresets if SCR access is not available */ in ata_sff_error_handler()
2081 hardreset == sata_sff_hardreset) && !sata_scr_valid(&ap->link)) in ata_sff_error_handler()
2084 ata_do_eh(ap, ap->ops->prereset, softreset, hardreset, in ata_sff_error_handler()
2085 ap->ops->postreset); in ata_sff_error_handler()
2090 * ata_sff_std_ports - initialize ioaddr with standard port offsets.
2102 ioaddr->data_addr = ioaddr->cmd_addr + ATA_REG_DATA; in ata_sff_std_ports()
2103 ioaddr->error_addr = ioaddr->cmd_addr + ATA_REG_ERR; in ata_sff_std_ports()
2104 ioaddr->feature_addr = ioaddr->cmd_addr + ATA_REG_FEATURE; in ata_sff_std_ports()
2105 ioaddr->nsect_addr = ioaddr->cmd_addr + ATA_REG_NSECT; in ata_sff_std_ports()
2106 ioaddr->lbal_addr = ioaddr->cmd_addr + ATA_REG_LBAL; in ata_sff_std_ports()
2107 ioaddr->lbam_addr = ioaddr->cmd_addr + ATA_REG_LBAM; in ata_sff_std_ports()
2108 ioaddr->lbah_addr = ioaddr->cmd_addr + ATA_REG_LBAH; in ata_sff_std_ports()
2109 ioaddr->device_addr = ioaddr->cmd_addr + ATA_REG_DEVICE; in ata_sff_std_ports()
2110 ioaddr->status_addr = ioaddr->cmd_addr + ATA_REG_STATUS; in ata_sff_std_ports()
2111 ioaddr->command_addr = ioaddr->cmd_addr + ATA_REG_CMD; in ata_sff_std_ports()
2132 * ata_pci_sff_init_host - acquire native PCI ATA resources and init host
2139 * Note that native PCI resources are valid even for legacy hosts
2141 * function can be used for both native and legacy SFF hosts.
2147 * 0 if at least one port is initialized, -ENODEV if no port is
2152 struct device *gdev = host->dev; in ata_pci_sff_init_host()
2159 struct ata_port *ap = host->ports[i]; in ata_pci_sff_init_host()
2171 ap->ops = &ata_dummy_port_ops; in ata_pci_sff_init_host()
2181 if (rc == -EBUSY) in ata_pci_sff_init_host()
2183 ap->ops = &ata_dummy_port_ops; in ata_pci_sff_init_host()
2186 host->iomap = iomap = pcim_iomap_table(pdev); in ata_pci_sff_init_host()
2188 ap->ioaddr.cmd_addr = iomap[base]; in ata_pci_sff_init_host()
2189 ap->ioaddr.altstatus_addr = in ata_pci_sff_init_host()
2190 ap->ioaddr.ctl_addr = (void __iomem *) in ata_pci_sff_init_host()
2192 ata_sff_std_ports(&ap->ioaddr); in ata_pci_sff_init_host()
2203 return -ENODEV; in ata_pci_sff_init_host()
2211 * ata_pci_sff_prepare_host - helper to prepare PCI PIO-only SFF ATA host
2216 * Helper to allocate PIO-only SFF ATA host for @pdev, acquire
2223 * 0 on success, -errno otherwise.
2232 if (!devres_open_group(&pdev->dev, NULL, GFP_KERNEL)) in ata_pci_sff_prepare_host()
2233 return -ENOMEM; in ata_pci_sff_prepare_host()
2235 host = ata_host_alloc_pinfo(&pdev->dev, ppi, 2); in ata_pci_sff_prepare_host()
2237 dev_err(&pdev->dev, "failed to allocate ATA host\n"); in ata_pci_sff_prepare_host()
2238 rc = -ENOMEM; in ata_pci_sff_prepare_host()
2246 devres_remove_group(&pdev->dev, NULL); in ata_pci_sff_prepare_host()
2251 devres_release_group(&pdev->dev, NULL); in ata_pci_sff_prepare_host()
2257 * ata_pci_sff_activate_host - start SFF host, request IRQ and register it
2264 * use two separate interrupts in legacy mode.
2270 * 0 on success, -errno otherwise.
2276 struct device *dev = host->dev; in ata_pci_sff_activate_host()
2278 const char *drv_name = dev_driver_string(host->dev); in ata_pci_sff_activate_host()
2285 if ((pdev->class >> 8) == PCI_CLASS_STORAGE_IDE) { in ata_pci_sff_activate_host()
2289 * ATA spec says we should use legacy mode when one in ata_pci_sff_activate_host()
2290 * port is in legacy mode, but disabled ports on some in ata_pci_sff_activate_host()
2291 * PCI hosts appear as fixed legacy ports, e.g SB600/700 in ata_pci_sff_activate_host()
2297 if (!ata_port_is_dummy(host->ports[0])) in ata_pci_sff_activate_host()
2299 if (!ata_port_is_dummy(host->ports[1])) in ata_pci_sff_activate_host()
2306 return -ENOMEM; in ata_pci_sff_activate_host()
2308 if (!legacy_mode && pdev->irq) { in ata_pci_sff_activate_host()
2311 rc = devm_request_irq(dev, pdev->irq, irq_handler, in ata_pci_sff_activate_host()
2317 if (ata_port_is_dummy(host->ports[i])) in ata_pci_sff_activate_host()
2319 ata_port_desc_misc(host->ports[i], pdev->irq); in ata_pci_sff_activate_host()
2322 if (!ata_port_is_dummy(host->ports[0])) { in ata_pci_sff_activate_host()
2329 ata_port_desc_misc(host->ports[0], in ata_pci_sff_activate_host()
2333 if (!ata_port_is_dummy(host->ports[1])) { in ata_pci_sff_activate_host()
2340 ata_port_desc_misc(host->ports[1], in ata_pci_sff_activate_host()
2363 if (ppi[i]->port_ops != &ata_dummy_port_ops) in ata_sff_find_valid_pi()
2374 struct device *dev = &pdev->dev; in ata_pci_init_one()
2381 dev_err(&pdev->dev, "no valid port_info specified\n"); in ata_pci_init_one()
2382 return -EINVAL; in ata_pci_init_one()
2386 return -ENOMEM; in ata_pci_init_one()
2402 host->private_data = host_priv; in ata_pci_init_one()
2403 host->flags |= hflags; in ata_pci_init_one()
2414 devres_remove_group(&pdev->dev, NULL); in ata_pci_init_one()
2416 devres_release_group(&pdev->dev, NULL); in ata_pci_init_one()
2422 * ata_pci_sff_init_one - Initialize/register PIO-only PCI IDE controller
2435 * the secondary legacy port on PCI.
2441 * Zero on success, negative on errno-based value on error.
2487 * ata_bmdma_fill_sg - Fill PCI IDE PRD table
2490 * Fill PCI IDE PRD (scatter-gather) table with segments
2499 struct ata_port *ap = qc->ap; in ata_bmdma_fill_sg()
2500 struct ata_bmdma_prd *prd = ap->bmdma_prd; in ata_bmdma_fill_sg()
2505 for_each_sg(qc->sg, sg, qc->n_elem, si) { in ata_bmdma_fill_sg()
2510 * Note h/w doesn't support 64-bit, so we unconditionally in ata_bmdma_fill_sg()
2520 len = 0x10000 - offset; in ata_bmdma_fill_sg()
2526 sg_len -= len; in ata_bmdma_fill_sg()
2531 prd[pi - 1].flags_len |= cpu_to_le32(ATA_PRD_EOT); in ata_bmdma_fill_sg()
2535 * ata_bmdma_fill_sg_dumb - Fill PCI IDE PRD table
2538 * Fill PCI IDE PRD (scatter-gather) table with segments
2549 struct ata_port *ap = qc->ap; in ata_bmdma_fill_sg_dumb()
2550 struct ata_bmdma_prd *prd = ap->bmdma_prd; in ata_bmdma_fill_sg_dumb()
2555 for_each_sg(qc->sg, sg, qc->n_elem, si) { in ata_bmdma_fill_sg_dumb()
2560 * Note h/w doesn't support 64-bit, so we unconditionally in ata_bmdma_fill_sg_dumb()
2570 len = 0x10000 - offset; in ata_bmdma_fill_sg_dumb()
2585 sg_len -= len; in ata_bmdma_fill_sg_dumb()
2590 prd[pi - 1].flags_len |= cpu_to_le32(ATA_PRD_EOT); in ata_bmdma_fill_sg_dumb()
2594 * ata_bmdma_qc_prep - Prepare taskfile for submission
2604 if (!(qc->flags & ATA_QCFLAG_DMAMAP)) in ata_bmdma_qc_prep()
2614 * ata_bmdma_dumb_qc_prep - Prepare taskfile for submission
2624 if (!(qc->flags & ATA_QCFLAG_DMAMAP)) in ata_bmdma_dumb_qc_prep()
2634 * ata_bmdma_qc_issue - issue taskfile to a BMDMA controller
2649 struct ata_port *ap = qc->ap; in ata_bmdma_qc_issue()
2650 struct ata_link *link = qc->dev->link; in ata_bmdma_qc_issue()
2653 if (!ata_is_dma(qc->tf.protocol)) in ata_bmdma_qc_issue()
2657 ata_dev_select(ap, qc->dev->devno, 1, 0); in ata_bmdma_qc_issue()
2660 switch (qc->tf.protocol) { in ata_bmdma_qc_issue()
2662 WARN_ON_ONCE(qc->tf.flags & ATA_TFLAG_POLLING); in ata_bmdma_qc_issue()
2664 trace_ata_tf_load(ap, &qc->tf); in ata_bmdma_qc_issue()
2665 ap->ops->sff_tf_load(ap, &qc->tf); /* load tf registers */ in ata_bmdma_qc_issue()
2666 trace_ata_bmdma_setup(ap, &qc->tf, qc->tag); in ata_bmdma_qc_issue()
2667 ap->ops->bmdma_setup(qc); /* set up bmdma */ in ata_bmdma_qc_issue()
2668 trace_ata_bmdma_start(ap, &qc->tf, qc->tag); in ata_bmdma_qc_issue()
2669 ap->ops->bmdma_start(qc); /* initiate bmdma */ in ata_bmdma_qc_issue()
2670 ap->hsm_task_state = HSM_ST_LAST; in ata_bmdma_qc_issue()
2674 WARN_ON_ONCE(qc->tf.flags & ATA_TFLAG_POLLING); in ata_bmdma_qc_issue()
2676 trace_ata_tf_load(ap, &qc->tf); in ata_bmdma_qc_issue()
2677 ap->ops->sff_tf_load(ap, &qc->tf); /* load tf registers */ in ata_bmdma_qc_issue()
2678 trace_ata_bmdma_setup(ap, &qc->tf, qc->tag); in ata_bmdma_qc_issue()
2679 ap->ops->bmdma_setup(qc); /* set up bmdma */ in ata_bmdma_qc_issue()
2680 ap->hsm_task_state = HSM_ST_FIRST; in ata_bmdma_qc_issue()
2683 if (!(qc->dev->flags & ATA_DFLAG_CDB_INTR)) in ata_bmdma_qc_issue()
2697 * ata_bmdma_port_intr - Handle BMDMA port interrupt
2711 struct ata_eh_info *ehi = &ap->link.eh_info; in ata_bmdma_port_intr()
2716 if (ap->hsm_task_state == HSM_ST_LAST && ata_is_dma(qc->tf.protocol)) { in ata_bmdma_port_intr()
2718 host_stat = ap->ops->bmdma_status(ap); in ata_bmdma_port_intr()
2725 /* before we do anything else, clear DMA-Start bit */ in ata_bmdma_port_intr()
2726 trace_ata_bmdma_stop(ap, &qc->tf, qc->tag); in ata_bmdma_port_intr()
2727 ap->ops->bmdma_stop(qc); in ata_bmdma_port_intr()
2732 qc->err_mask |= AC_ERR_HOST_BUS; in ata_bmdma_port_intr()
2733 ap->hsm_task_state = HSM_ST_ERR; in ata_bmdma_port_intr()
2739 if (unlikely(qc->err_mask) && ata_is_dma(qc->tf.protocol)) in ata_bmdma_port_intr()
2747 * ata_bmdma_interrupt - Default BMDMA ATA host interrupt handler
2767 * ata_bmdma_error_handler - Stock error handler for BMDMA controller
2772 * able to use this EH as-is or with some added handling before
2784 qc = __ata_qc_from_tag(ap, ap->link.active_tag); in ata_bmdma_error_handler()
2785 if (qc && !(qc->flags & ATA_QCFLAG_EH)) in ata_bmdma_error_handler()
2789 spin_lock_irqsave(ap->lock, flags); in ata_bmdma_error_handler()
2791 if (qc && ata_is_dma(qc->tf.protocol)) { in ata_bmdma_error_handler()
2794 host_stat = ap->ops->bmdma_status(ap); in ata_bmdma_error_handler()
2802 if (qc->err_mask == AC_ERR_TIMEOUT && (host_stat & ATA_DMA_ERR)) { in ata_bmdma_error_handler()
2803 qc->err_mask = AC_ERR_HOST_BUS; in ata_bmdma_error_handler()
2807 trace_ata_bmdma_stop(ap, &qc->tf, qc->tag); in ata_bmdma_error_handler()
2808 ap->ops->bmdma_stop(qc); in ata_bmdma_error_handler()
2812 ap->ops->sff_check_status(ap); in ata_bmdma_error_handler()
2813 if (ap->ops->sff_irq_clear) in ata_bmdma_error_handler()
2814 ap->ops->sff_irq_clear(ap); in ata_bmdma_error_handler()
2818 spin_unlock_irqrestore(ap->lock, flags); in ata_bmdma_error_handler()
2828 * ata_bmdma_post_internal_cmd - Stock post_internal_cmd for BMDMA
2836 struct ata_port *ap = qc->ap; in ata_bmdma_post_internal_cmd()
2839 if (ata_is_dma(qc->tf.protocol)) { in ata_bmdma_post_internal_cmd()
2840 spin_lock_irqsave(ap->lock, flags); in ata_bmdma_post_internal_cmd()
2841 trace_ata_bmdma_stop(ap, &qc->tf, qc->tag); in ata_bmdma_post_internal_cmd()
2842 ap->ops->bmdma_stop(qc); in ata_bmdma_post_internal_cmd()
2843 spin_unlock_irqrestore(ap->lock, flags); in ata_bmdma_post_internal_cmd()
2849 * ata_bmdma_irq_clear - Clear PCI IDE BMDMA interrupt.
2861 void __iomem *mmio = ap->ioaddr.bmdma_addr; in ata_bmdma_irq_clear()
2871 * ata_bmdma_setup - Set up PCI IDE BMDMA transaction
2879 struct ata_port *ap = qc->ap; in ata_bmdma_setup()
2880 unsigned int rw = (qc->tf.flags & ATA_TFLAG_WRITE); in ata_bmdma_setup()
2885 iowrite32(ap->bmdma_prd_dma, ap->ioaddr.bmdma_addr + ATA_DMA_TABLE_OFS); in ata_bmdma_setup()
2887 /* specify data direction, triple-check start bit is clear */ in ata_bmdma_setup()
2888 dmactl = ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_CMD); in ata_bmdma_setup()
2892 iowrite8(dmactl, ap->ioaddr.bmdma_addr + ATA_DMA_CMD); in ata_bmdma_setup()
2895 ap->ops->sff_exec_command(ap, &qc->tf); in ata_bmdma_setup()
2900 * ata_bmdma_start - Start a PCI IDE BMDMA transaction
2908 struct ata_port *ap = qc->ap; in ata_bmdma_start()
2912 dmactl = ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_CMD); in ata_bmdma_start()
2913 iowrite8(dmactl | ATA_DMA_START, ap->ioaddr.bmdma_addr + ATA_DMA_CMD); in ata_bmdma_start()
2933 * ata_bmdma_stop - Stop PCI IDE BMDMA transfer
2945 struct ata_port *ap = qc->ap; in ata_bmdma_stop()
2946 void __iomem *mmio = ap->ioaddr.bmdma_addr; in ata_bmdma_stop()
2952 /* one-PIO-cycle guaranteed wait, per spec, for HDMA1:0 transition */ in ata_bmdma_stop()
2958 * ata_bmdma_status - Read PCI IDE BMDMA status
2970 return ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS); in ata_bmdma_status()
2976 * ata_bmdma_port_start - Set port up for bmdma.
2989 if (ap->mwdma_mask || ap->udma_mask) { in ata_bmdma_port_start()
2990 ap->bmdma_prd = in ata_bmdma_port_start()
2991 dmam_alloc_coherent(ap->host->dev, ATA_PRD_TBL_SZ, in ata_bmdma_port_start()
2992 &ap->bmdma_prd_dma, GFP_KERNEL); in ata_bmdma_port_start()
2993 if (!ap->bmdma_prd) in ata_bmdma_port_start()
2994 return -ENOMEM; in ata_bmdma_port_start()
3002 * ata_bmdma_port_start32 - Set port up for dma.
3017 ap->pflags |= ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE; in ata_bmdma_port_start32()
3025 * ata_pci_bmdma_clear_simplex - attempt to kick device out of simplex
3031 * have -undefined- behaviour.
3039 return -ENOENT; in ata_pci_bmdma_clear_simplex()
3045 return -EOPNOTSUPP; in ata_pci_bmdma_clear_simplex()
3054 dev_err(host->dev, "BMDMA: %s, falling back to PIO\n", reason); in ata_bmdma_nodma()
3057 host->ports[i]->mwdma_mask = 0; in ata_bmdma_nodma()
3058 host->ports[i]->udma_mask = 0; in ata_bmdma_nodma()
3063 * ata_pci_bmdma_init - acquire PCI BMDMA resources and init ATA host
3073 struct device *gdev = host->dev; in ata_pci_bmdma_init()
3086 * ->sff_irq_clear method. Try to initialize bmdma_addr in ata_pci_bmdma_init()
3089 rc = dma_set_mask_and_coherent(&pdev->dev, ATA_DMA_MASK); in ata_pci_bmdma_init()
3099 host->iomap = pcim_iomap_table(pdev); in ata_pci_bmdma_init()
3102 struct ata_port *ap = host->ports[i]; in ata_pci_bmdma_init()
3103 void __iomem *bmdma = host->iomap[4] + 8 * i; in ata_pci_bmdma_init()
3108 ap->ioaddr.bmdma_addr = bmdma; in ata_pci_bmdma_init()
3109 if ((!(ap->flags & ATA_FLAG_IGN_SIMPLEX)) && in ata_pci_bmdma_init()
3111 host->flags |= ATA_HOST_SIMPLEX; in ata_pci_bmdma_init()
3120 * ata_pci_bmdma_prepare_host - helper to prepare PCI BMDMA ATA host
3132 * 0 on success, -errno otherwise.
3150 * ata_pci_bmdma_init_one - Initialize/register BMDMA PCI IDE controller
3164 * Zero on success, negative on errno-based value on error.
3179 * ata_sff_port_init - Initialize SFF/BMDMA ATA port
3190 INIT_DELAYED_WORK(&ap->sff_pio_task, ata_sff_pio_task); in ata_sff_port_init()
3191 ap->ctl = ATA_DEVCTL_OBS; in ata_sff_port_init()
3192 ap->last_ctl = 0xFF; in ata_sff_port_init()
3199 return -ENOMEM; in ata_sff_init()