4 * Synopsys DesignWare Cores (DWC) SATA host driver
6 * Author: Mark Miesfeld <mmiesfeld@amcc.com>
8 * Ported from 2.6.19.2 to 2.6.25/26 by Stefan Roese <sr@denx.de>
9 * Copyright 2008 DENX Software Engineering
11 * Based on versions provided by AMCC and Synopsys which are:
12 * Copyright 2006 Applied Micro Circuits Corporation
13 * COPYRIGHT (C) 2005 SYNOPSYS, INC. ALL RIGHTS RESERVED
15 * This program is free software; you can redistribute
16 * it and/or modify it under the terms of the GNU
17 * General Public License as published by the
18 * Free Software Foundation; either version 2 of the License,
19 * or (at your option) any later version.
23 * SATA support based on the chip canyonlands.
26 * The local version of this driver for the canyonlands board
27 * does not use interrupts but polls the chip instead.
33 #include <asm/processor.h>
34 #include <asm/errno.h>
39 #include <linux/ctype.h>
43 #define DMA_NUM_CHANS 1
44 #define DMA_NUM_CHAN_REGS 8
46 #define AHB_DMA_BRST_DFLT 16
53 struct dma_chan_regs {
60 struct dmareg sstatar;
61 struct dmareg dstatar;
67 struct dma_interrupt_regs {
70 struct dmareg srctran;
71 struct dmareg dsttran;
76 struct dma_chan_regs chan_regs[DMA_NUM_CHAN_REGS];
77 struct dma_interrupt_regs interrupt_raw;
78 struct dma_interrupt_regs interrupt_status;
79 struct dma_interrupt_regs interrupt_mask;
80 struct dma_interrupt_regs interrupt_clear;
81 struct dmareg statusInt;
82 struct dmareg rq_srcreg;
83 struct dmareg rq_dstreg;
84 struct dmareg rq_sgl_srcreg;
85 struct dmareg rq_sgl_dstreg;
86 struct dmareg rq_lst_srcreg;
87 struct dmareg rq_lst_dstreg;
88 struct dmareg dma_cfg;
89 struct dmareg dma_chan_en;
91 struct dmareg dma_test;
95 * Param 6 = dma_param[0], Param 5 = dma_param[1],
96 * Param 4 = dma_param[2] ...
98 struct dmareg dma_params[6];
101 #define DMA_EN 0x00000001
102 #define DMA_DI 0x00000000
103 #define DMA_CHANNEL(ch) (0x00000001 << (ch))
104 #define DMA_ENABLE_CHAN(ch) ((0x00000001 << (ch)) | \
105 ((0x000000001 << (ch)) << 8))
106 #define DMA_DISABLE_CHAN(ch) (0x00000000 | \
107 ((0x000000001 << (ch)) << 8))
109 #define SATA_DWC_MAX_PORTS 1
110 #define SATA_DWC_SCR_OFFSET 0x24
111 #define SATA_DWC_REG_OFFSET 0x64
113 struct sata_dwc_regs {
143 #define SATA_DWC_TXFIFO_DEPTH 0x01FF
144 #define SATA_DWC_RXFIFO_DEPTH 0x01FF
146 #define SATA_DWC_DBTSR_MWR(size) ((size / 4) & SATA_DWC_TXFIFO_DEPTH)
147 #define SATA_DWC_DBTSR_MRD(size) (((size / 4) & \
148 SATA_DWC_RXFIFO_DEPTH) << 16)
149 #define SATA_DWC_INTPR_DMAT 0x00000001
150 #define SATA_DWC_INTPR_NEWFP 0x00000002
151 #define SATA_DWC_INTPR_PMABRT 0x00000004
152 #define SATA_DWC_INTPR_ERR 0x00000008
153 #define SATA_DWC_INTPR_NEWBIST 0x00000010
154 #define SATA_DWC_INTPR_IPF 0x10000000
155 #define SATA_DWC_INTMR_DMATM 0x00000001
156 #define SATA_DWC_INTMR_NEWFPM 0x00000002
157 #define SATA_DWC_INTMR_PMABRTM 0x00000004
158 #define SATA_DWC_INTMR_ERRM 0x00000008
159 #define SATA_DWC_INTMR_NEWBISTM 0x00000010
161 #define SATA_DWC_DMACR_TMOD_TXCHEN 0x00000004
162 #define SATA_DWC_DMACR_TXRXCH_CLEAR SATA_DWC_DMACR_TMOD_TXCHEN
164 #define SATA_DWC_QCMD_MAX 32
166 #define SATA_DWC_SERROR_ERR_BITS 0x0FFF0F03
168 #define HSDEVP_FROM_AP(ap) (struct sata_dwc_device_port*) \
171 struct sata_dwc_device {
173 struct ata_probe_ent *pe;
174 struct ata_host *host;
176 struct sata_dwc_regs *sata_dwc_regs;
180 struct sata_dwc_device_port {
181 struct sata_dwc_device *hsdev;
182 int cmd_issued[SATA_DWC_QCMD_MAX];
183 u32 dma_chan[SATA_DWC_QCMD_MAX];
184 int dma_pending[SATA_DWC_QCMD_MAX];
188 SATA_DWC_CMD_ISSUED_NOT = 0,
189 SATA_DWC_CMD_ISSUED_PEND = 1,
190 SATA_DWC_CMD_ISSUED_EXEC = 2,
191 SATA_DWC_CMD_ISSUED_NODATA = 3,
193 SATA_DWC_DMA_PENDING_NONE = 0,
194 SATA_DWC_DMA_PENDING_TX = 1,
195 SATA_DWC_DMA_PENDING_RX = 2,
198 #define msleep(a) udelay(a * 1000)
199 #define ssleep(a) msleep(a * 1000)
201 static int ata_probe_timeout = (ATA_TMOUT_INTERNAL / 100);
203 enum sata_dev_state {
209 enum sata_dev_state dev_state = SATA_INIT;
211 static struct ahb_dma_regs *sata_dma_regs = 0;
212 static struct ata_host *phost;
213 static struct ata_port ap;
214 static struct ata_port *pap = ≈
215 static struct ata_device ata_device;
216 static struct sata_dwc_device_port dwc_devp;
218 static void *scr_addr_sstatus;
219 static u32 temp_n_block = 0;
221 static unsigned ata_exec_internal(struct ata_device *dev,
222 struct ata_taskfile *tf, const u8 *cdb,
223 int dma_dir, unsigned int buflen,
224 unsigned long timeout);
225 static unsigned int ata_dev_set_feature(struct ata_device *dev,
226 u8 enable,u8 feature);
227 static unsigned int ata_dev_init_params(struct ata_device *dev,
228 u16 heads, u16 sectors);
229 static u8 ata_irq_on(struct ata_port *ap);
230 static struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap,
232 static int ata_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc,
233 u8 status, int in_wq);
234 static void ata_tf_to_host(struct ata_port *ap,
235 const struct ata_taskfile *tf);
236 static void ata_exec_command(struct ata_port *ap,
237 const struct ata_taskfile *tf);
238 static unsigned int ata_qc_issue_prot(struct ata_queued_cmd *qc);
239 static u8 ata_check_altstatus(struct ata_port *ap);
240 static u8 ata_check_status(struct ata_port *ap);
241 static void ata_dev_select(struct ata_port *ap, unsigned int device,
242 unsigned int wait, unsigned int can_sleep);
243 static void ata_qc_issue(struct ata_queued_cmd *qc);
244 static void ata_tf_load(struct ata_port *ap,
245 const struct ata_taskfile *tf);
246 static int ata_dev_read_sectors(unsigned char* pdata,
247 unsigned long datalen, u32 block, u32 n_block);
248 static int ata_dev_write_sectors(unsigned char* pdata,
249 unsigned long datalen , u32 block, u32 n_block);
250 static void ata_std_dev_select(struct ata_port *ap, unsigned int device);
251 static void ata_qc_complete(struct ata_queued_cmd *qc);
252 static void __ata_qc_complete(struct ata_queued_cmd *qc);
253 static void fill_result_tf(struct ata_queued_cmd *qc);
254 static void ata_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
255 static void ata_mmio_data_xfer(struct ata_device *dev,
257 unsigned int buflen,int do_write);
258 static void ata_pio_task(struct ata_port *arg_ap);
259 static void __ata_port_freeze(struct ata_port *ap);
260 static int ata_port_freeze(struct ata_port *ap);
261 static void ata_qc_free(struct ata_queued_cmd *qc);
262 static void ata_pio_sectors(struct ata_queued_cmd *qc);
263 static void ata_pio_sector(struct ata_queued_cmd *qc);
264 static void ata_pio_queue_task(struct ata_port *ap,
265 void *data,unsigned long delay);
266 static void ata_hsm_qc_complete(struct ata_queued_cmd *qc, int in_wq);
267 static int sata_dwc_softreset(struct ata_port *ap);
268 static int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class,
269 unsigned int flags, u16 *id);
270 static int check_sata_dev_state(void);
272 static const struct ata_port_info sata_dwc_port_info[] = {
274 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
275 ATA_FLAG_MMIO | ATA_FLAG_PIO_POLLING |
276 ATA_FLAG_SRST | ATA_FLAG_NCQ,
283 int init_sata(int dev)
285 struct sata_dwc_device hsdev;
286 struct ata_host host;
287 struct ata_port_info pi = sata_dwc_port_info[0];
288 struct ata_link *link;
289 struct sata_dwc_device_port hsdevp = dwc_devp;
291 u8 *sata_dma_regs_addr = 0;
293 unsigned long base_addr = 0;
300 base = (u8*)SATA_BASE_ADDR;
302 hsdev.sata_dwc_regs = (void *__iomem)(base + SATA_DWC_REG_OFFSET);
304 host.n_ports = SATA_DWC_MAX_PORTS;
306 for (i = 0; i < SATA_DWC_MAX_PORTS; i++) {
307 ap.pflags |= ATA_PFLAG_INITIALIZING;
308 ap.flags = ATA_FLAG_DISABLED;
310 ap.ctl = ATA_DEVCTL_OBS;
317 link->active_tag = ATA_TAG_POISON;
318 link->hw_sata_spd_limit = 0;
324 ap.pio_mask = pi.pio_mask;
325 ap.mwdma_mask = pi.mwdma_mask;
326 ap.udma_mask = pi.udma_mask;
327 ap.flags |= pi.flags;
328 ap.link.flags |= pi.link_flags;
330 host.ports[0]->ioaddr.cmd_addr = base;
331 host.ports[0]->ioaddr.scr_addr = base + SATA_DWC_SCR_OFFSET;
332 scr_addr_sstatus = base + SATA_DWC_SCR_OFFSET;
334 base_addr = (unsigned long)base;
336 host.ports[0]->ioaddr.cmd_addr = (void *)base_addr + 0x00;
337 host.ports[0]->ioaddr.data_addr = (void *)base_addr + 0x00;
339 host.ports[0]->ioaddr.error_addr = (void *)base_addr + 0x04;
340 host.ports[0]->ioaddr.feature_addr = (void *)base_addr + 0x04;
342 host.ports[0]->ioaddr.nsect_addr = (void *)base_addr + 0x08;
344 host.ports[0]->ioaddr.lbal_addr = (void *)base_addr + 0x0c;
345 host.ports[0]->ioaddr.lbam_addr = (void *)base_addr + 0x10;
346 host.ports[0]->ioaddr.lbah_addr = (void *)base_addr + 0x14;
348 host.ports[0]->ioaddr.device_addr = (void *)base_addr + 0x18;
349 host.ports[0]->ioaddr.command_addr = (void *)base_addr + 0x1c;
350 host.ports[0]->ioaddr.status_addr = (void *)base_addr + 0x1c;
352 host.ports[0]->ioaddr.altstatus_addr = (void *)base_addr + 0x20;
353 host.ports[0]->ioaddr.ctl_addr = (void *)base_addr + 0x20;
355 sata_dma_regs_addr = (u8*)SATA_DMA_REG_ADDR;
356 sata_dma_regs = (void *__iomem)sata_dma_regs_addr;
358 status = ata_check_altstatus(&ap);
360 if (status == 0x7f) {
361 printf("Hard Disk not found.\n");
362 dev_state = SATA_NODEVICE;
367 printf("Waiting for device...");
372 status = ata_check_altstatus(&ap);
374 if ((status & ATA_BUSY) == 0) {
380 if (i > (ATA_RESET_TIME * 100)) {
381 printf("** TimeOUT **\n");
383 dev_state = SATA_NODEVICE;
387 if ((i >= 100) && ((i % 100) == 0))
391 rc = sata_dwc_softreset(&ap);
394 printf("sata_dwc : error. soft reset failed\n");
398 for (chan = 0; chan < DMA_NUM_CHANS; chan++) {
399 out_le32(&(sata_dma_regs->interrupt_mask.error.low),
400 DMA_DISABLE_CHAN(chan));
402 out_le32(&(sata_dma_regs->interrupt_mask.tfr.low),
403 DMA_DISABLE_CHAN(chan));
406 out_le32(&(sata_dma_regs->dma_cfg.low), DMA_DI);
408 out_le32(&hsdev.sata_dwc_regs->intmr,
409 SATA_DWC_INTMR_ERRM |
410 SATA_DWC_INTMR_PMABRTM);
412 /* Unmask the error bits that should trigger
413 * an error interrupt by setting the error mask register.
415 out_le32(&hsdev.sata_dwc_regs->errmr, SATA_DWC_SERROR_ERR_BITS);
417 hsdev.host = ap.host;
418 memset(&hsdevp, 0, sizeof(hsdevp));
419 hsdevp.hsdev = &hsdev;
421 for (i = 0; i < SATA_DWC_QCMD_MAX; i++)
422 hsdevp.cmd_issued[i] = SATA_DWC_CMD_ISSUED_NOT;
424 out_le32((void __iomem *)scr_addr_sstatus + 4,
425 in_le32((void __iomem *)scr_addr_sstatus + 4));
431 static u8 ata_check_altstatus(struct ata_port *ap)
434 val = readb(ap->ioaddr.altstatus_addr);
438 static int sata_dwc_softreset(struct ata_port *ap)
442 struct ata_ioports *ioaddr = &ap->ioaddr;
444 in_le32((void *)ap->ioaddr.scr_addr + (SCR_ERROR * 4));
446 writeb(0x55, ioaddr->nsect_addr);
447 writeb(0xaa, ioaddr->lbal_addr);
448 writeb(0xaa, ioaddr->nsect_addr);
449 writeb(0x55, ioaddr->lbal_addr);
450 writeb(0x55, ioaddr->nsect_addr);
451 writeb(0xaa, ioaddr->lbal_addr);
453 nsect = readb(ioaddr->nsect_addr);
454 lbal = readb(ioaddr->lbal_addr);
456 if ((nsect == 0x55) && (lbal == 0xaa)) {
457 printf("Device found\n");
459 printf("No device found\n");
460 dev_state = SATA_NODEVICE;
464 tmp = ATA_DEVICE_OBS;
465 writeb(tmp, ioaddr->device_addr);
466 writeb(ap->ctl, ioaddr->ctl_addr);
470 writeb(ap->ctl | ATA_SRST, ioaddr->ctl_addr);
473 writeb(ap->ctl, ioaddr->ctl_addr);
476 ata_check_status(ap);
479 ata_check_status(ap);
482 u8 status = ata_check_status(ap);
484 if (!(status & ATA_BUSY))
487 printf("Hard Disk status is BUSY.\n");
491 tmp = ATA_DEVICE_OBS;
492 writeb(tmp, ioaddr->device_addr);
494 nsect = readb(ioaddr->nsect_addr);
495 lbal = readb(ioaddr->lbal_addr);
500 static u8 ata_check_status(struct ata_port *ap)
503 val = readb(ap->ioaddr.status_addr);
507 static int ata_id_has_hipm(const u16 *id)
511 if (val == 0 || val == 0xffff)
514 return val & (1 << 9);
517 static int ata_id_has_dipm(const u16 *id)
521 if (val == 0 || val == 0xffff)
524 return val & (1 << 3);
527 int scan_sata(int dev)
533 struct ata_device *ata_dev = &ata_device;
534 unsigned long pio_mask, mwdma_mask;
536 u16 iobuf[ATA_SECTOR_WORDS];
538 memset(iobuf, 0, sizeof(iobuf));
540 if (dev_state == SATA_NODEVICE)
543 printf("Waiting for device...");
548 status = ata_check_altstatus(&ap);
550 if ((status & ATA_BUSY) == 0) {
556 if (i > (ATA_RESET_TIME * 100)) {
557 printf("** TimeOUT **\n");
559 dev_state = SATA_NODEVICE;
562 if ((i >= 100) && ((i % 100) == 0))
568 rc = ata_dev_read_id(ata_dev, &ata_dev->class,
569 ATA_READID_POSTRESET,ata_dev->id);
571 printf("sata_dwc : error. failed sata scan\n");
575 /* SATA drives indicate we have a bridge. We don't know which
576 * end of the link the bridge is which is a problem
578 if (ata_id_is_sata(ata_dev->id))
579 ap.cbl = ATA_CBL_SATA;
583 ata_dev->flags &= ~ATA_DFLAG_CFG_MASK;
584 ata_dev->max_sectors = 0;
585 ata_dev->cdb_len = 0;
586 ata_dev->n_sectors = 0;
587 ata_dev->cylinders = 0;
589 ata_dev->sectors = 0;
591 if (id[ATA_ID_FIELD_VALID] & (1 << 1)) {
592 pio_mask = id[ATA_ID_PIO_MODES] & 0x03;
596 /* If word 64 isn't valid then Word 51 high byte holds
597 * the PIO timing number for the maximum. Turn it into
600 u8 mode = (id[ATA_ID_OLD_PIO_MODES] >> 8) & 0xFF;
602 pio_mask = (2 << mode) - 1;
608 mwdma_mask = id[ATA_ID_MWDMA_MODES] & 0x07;
610 if (ata_id_is_cfa(id)) {
611 int pio = id[163] & 0x7;
612 int dma = (id[163] >> 3) & 7;
615 pio_mask |= (1 << 5);
617 pio_mask |= (1 << 6);
619 mwdma_mask |= (1 << 3);
621 mwdma_mask |= (1 << 4);
624 if (ata_dev->class == ATA_DEV_ATA) {
625 if (ata_id_is_cfa(id)) {
627 printf("supports DRM functions and may "
628 "not be fully accessable.\n");
629 sprintf(revbuf, "%s", "CFA");
631 if (ata_id_has_tpm(id))
632 printf("supports DRM functions and may "
633 "not be fully accessable.\n");
636 ata_dev->n_sectors = ata_id_n_sectors((u16*)id);
638 if (ata_dev->id[59] & 0x100)
639 ata_dev->multi_count = ata_dev->id[59] & 0xff;
641 if (ata_id_has_lba(id)) {
644 ata_dev->flags |= ATA_DFLAG_LBA;
645 if (ata_id_has_lba48(id)) {
646 ata_dev->flags |= ATA_DFLAG_LBA48;
648 if (ata_dev->n_sectors >= (1UL << 28) &&
649 ata_id_has_flush_ext(id))
650 ata_dev->flags |= ATA_DFLAG_FLUSH_EXT;
652 if (!ata_id_has_ncq(ata_dev->id))
655 if (ata_dev->horkage & ATA_HORKAGE_NONCQ)
656 sprintf(ncq_desc, "%s", "NCQ (not used)");
658 if (ap.flags & ATA_FLAG_NCQ)
659 ata_dev->flags |= ATA_DFLAG_NCQ;
661 ata_dev->cdb_len = 16;
663 ata_dev->max_sectors = ATA_MAX_SECTORS;
664 if (ata_dev->flags & ATA_DFLAG_LBA48)
665 ata_dev->max_sectors = ATA_MAX_SECTORS_LBA48;
667 if (!(ata_dev->horkage & ATA_HORKAGE_IPM)) {
668 if (ata_id_has_hipm(ata_dev->id))
669 ata_dev->flags |= ATA_DFLAG_HIPM;
670 if (ata_id_has_dipm(ata_dev->id))
671 ata_dev->flags |= ATA_DFLAG_DIPM;
674 if ((ap.cbl == ATA_CBL_SATA) && (!ata_id_is_sata(ata_dev->id))) {
675 ata_dev->udma_mask &= ATA_UDMA5;
676 ata_dev->max_sectors = ATA_MAX_SECTORS;
679 if (ata_dev->horkage & ATA_HORKAGE_DIAGNOSTIC) {
680 printf("Drive reports diagnostics failure."
681 "This may indicate a drive\n");
682 printf("fault or invalid emulation."
683 "Contact drive vendor for information.\n");
686 rc = check_sata_dev_state();
688 ata_id_c_string(ata_dev->id,
689 (unsigned char *)sata_dev_desc[dev].revision,
690 ATA_ID_FW_REV, sizeof(sata_dev_desc[dev].revision));
691 ata_id_c_string(ata_dev->id,
692 (unsigned char *)sata_dev_desc[dev].vendor,
693 ATA_ID_PROD, sizeof(sata_dev_desc[dev].vendor));
694 ata_id_c_string(ata_dev->id,
695 (unsigned char *)sata_dev_desc[dev].product,
696 ATA_ID_SERNO, sizeof(sata_dev_desc[dev].product));
698 sata_dev_desc[dev].lba = (u32) ata_dev->n_sectors;
701 if (ata_dev->id[83] & (1 << 10)) {
702 sata_dev_desc[dev].lba48 = 1;
704 sata_dev_desc[dev].lba48 = 0;
711 static u8 ata_busy_wait(struct ata_port *ap,
712 unsigned int bits,unsigned int max)
718 status = ata_check_status(ap);
720 } while (status != 0xff && (status & bits) && (max > 0));
725 static int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class,
726 unsigned int flags, u16 *id)
728 struct ata_port *ap = pap;
729 unsigned int class = *p_class;
730 struct ata_taskfile tf;
731 unsigned int err_mask = 0;
733 int may_fallback = 1, tried_spinup = 0;
737 status = ata_busy_wait(ap, ATA_BUSY, 30000);
738 if (status & ATA_BUSY) {
739 printf("BSY = 0 check. timeout.\n");
744 ata_dev_select(ap, dev->devno, 1, 1);
747 memset(&tf, 0, sizeof(tf));
749 ap->flags &= ~ATA_FLAG_DISABLED;
751 tf.device = ATA_DEVICE_OBS;
752 tf.command = ATA_CMD_ID_ATA;
753 tf.protocol = ATA_PROT_PIO;
755 /* Some devices choke if TF registers contain garbage. Make
756 * sure those are properly initialized.
758 tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
760 /* Device presence detection is unreliable on some
761 * controllers. Always poll IDENTIFY if available.
763 tf.flags |= ATA_TFLAG_POLLING;
767 err_mask = ata_exec_internal(dev, &tf, NULL, DMA_FROM_DEVICE,
768 sizeof(id[0]) * ATA_ID_WORDS, 0);
771 if (err_mask & AC_ERR_NODEV_HINT) {
772 printf("NODEV after polling detection\n");
776 if ((err_mask == AC_ERR_DEV) && (tf.feature & ATA_ABORTED)) {
777 /* Device or controller might have reported
778 * the wrong device class. Give a shot at the
779 * other IDENTIFY if the current one is
780 * aborted by the device.
785 if (class == ATA_DEV_ATA) {
786 class = ATA_DEV_ATAPI;
792 /* Control reaches here iff the device aborted
793 * both flavors of IDENTIFYs which happens
794 * sometimes with phantom devices.
796 printf("both IDENTIFYs aborted, assuming NODEV\n");
800 reason = "I/O error";
804 /* Falling back doesn't make sense if ID data was read
805 * successfully at least once.
811 for (id_cnt = 0; id_cnt < ATA_ID_WORDS; id_cnt++)
812 id[id_cnt] = le16_to_cpu(id[id_cnt]);
816 reason = "device reports invalid type";
818 if (class == ATA_DEV_ATA) {
819 if (!ata_id_is_ata(id) && !ata_id_is_cfa(id))
822 if (ata_id_is_ata(id))
825 if (!tried_spinup && (id[2] == 0x37c8 || id[2] == 0x738c)) {
828 * Drive powered-up in standby mode, and requires a specific
829 * SET_FEATURES spin-up subcommand before it will accept
830 * anything other than the original IDENTIFY command.
832 err_mask = ata_dev_set_feature(dev, SETFEATURES_SPINUP, 0);
833 if (err_mask && id[2] != 0x738c) {
835 reason = "SPINUP failed";
839 * If the drive initially returned incomplete IDENTIFY info,
840 * we now must reissue the IDENTIFY command.
846 if ((flags & ATA_READID_POSTRESET) && class == ATA_DEV_ATA) {
848 * The exact sequence expected by certain pre-ATA4 drives is:
850 * IDENTIFY (optional in early ATA)
851 * INITIALIZE DEVICE PARAMETERS (later IDE and ATA)
853 * Some drives were very specific about that exact sequence.
855 * Note that ATA4 says lba is mandatory so the second check
856 * shoud never trigger.
858 if (ata_id_major_version(id) < 4 || !ata_id_has_lba(id)) {
859 err_mask = ata_dev_init_params(dev, id[3], id[6]);
862 reason = "INIT_DEV_PARAMS failed";
866 /* current CHS translation info (id[53-58]) might be
867 * changed. reread the identify device info.
869 flags &= ~ATA_READID_POSTRESET;
878 printf("failed to READ ID (%s, err_mask=0x%x)\n", reason, err_mask);
882 static u8 ata_wait_idle(struct ata_port *ap)
884 u8 status = ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
888 static void ata_dev_select(struct ata_port *ap, unsigned int device,
889 unsigned int wait, unsigned int can_sleep)
894 ata_std_dev_select(ap, device);
900 static void ata_std_dev_select(struct ata_port *ap, unsigned int device)
905 tmp = ATA_DEVICE_OBS;
907 tmp = ATA_DEVICE_OBS | ATA_DEV1;
910 writeb(tmp, ap->ioaddr.device_addr);
912 readb(ap->ioaddr.altstatus_addr);
917 static int waiting_for_reg_state(volatile u8 *offset,
924 for (i = 0; i < timeout_msec; i++) {
925 status = readl(offset);
926 if ((status & sign) != 0)
931 return (i < timeout_msec) ? 0 : -1;
934 static void ata_qc_reinit(struct ata_queued_cmd *qc)
936 qc->dma_dir = DMA_NONE;
938 qc->nbytes = qc->extrabytes = qc->curbytes = 0;
941 qc->sect_size = ATA_SECT_SIZE;
942 qc->nbytes = ATA_SECT_SIZE * temp_n_block;
944 memset(&qc->tf, 0, sizeof(qc->tf));
946 qc->tf.device = ATA_DEVICE_OBS;
948 qc->result_tf.command = ATA_DRDY;
949 qc->result_tf.feature = 0;
952 struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap,
955 if (tag < ATA_MAX_QUEUE)
956 return &ap->qcmd[tag];
960 static void __ata_port_freeze(struct ata_port *ap)
962 printf("set port freeze.\n");
963 ap->pflags |= ATA_PFLAG_FROZEN;
966 static int ata_port_freeze(struct ata_port *ap)
968 __ata_port_freeze(ap);
972 unsigned ata_exec_internal(struct ata_device *dev,
973 struct ata_taskfile *tf, const u8 *cdb,
974 int dma_dir, unsigned int buflen,
975 unsigned long timeout)
977 struct ata_link *link = dev->link;
978 struct ata_port *ap = pap;
979 struct ata_queued_cmd *qc;
980 unsigned int tag, preempted_tag;
981 u32 preempted_sactive, preempted_qc_active;
982 int preempted_nr_active_links;
983 unsigned int err_mask;
987 status = ata_busy_wait(ap, ATA_BUSY, 300000);
988 if (status & ATA_BUSY) {
989 printf("BSY = 0 check. timeout.\n");
994 if (ap->pflags & ATA_PFLAG_FROZEN)
995 return AC_ERR_SYSTEM;
997 tag = ATA_TAG_INTERNAL;
999 if (test_and_set_bit(tag, &ap->qc_allocated)) {
1004 qc = __ata_qc_from_tag(ap, tag);
1011 preempted_tag = link->active_tag;
1012 preempted_sactive = link->sactive;
1013 preempted_qc_active = ap->qc_active;
1014 preempted_nr_active_links = ap->nr_active_links;
1015 link->active_tag = ATA_TAG_POISON;
1018 ap->nr_active_links = 0;
1022 memcpy(qc->cdb, cdb, ATAPI_CDB_LEN);
1023 qc->flags |= ATA_QCFLAG_RESULT_TF;
1024 qc->dma_dir = dma_dir;
1025 qc->private_data = 0;
1030 timeout = ata_probe_timeout * 1000 / HZ;
1032 status = ata_busy_wait(ap, ATA_BUSY, 30000);
1033 if (status & ATA_BUSY) {
1034 printf("BSY = 0 check. timeout.\n");
1035 printf("altstatus = 0x%x.\n", status);
1036 qc->err_mask |= AC_ERR_OTHER;
1037 return qc->err_mask;
1040 if (waiting_for_reg_state(ap->ioaddr.altstatus_addr, 1000, 0x8)) {
1044 status = readb(ap->ioaddr.altstatus_addr);
1045 if ((status & 0x01) != 0) {
1046 errorStatus = readb(ap->ioaddr.feature_addr);
1047 if (errorStatus == 0x04 &&
1048 qc->tf.command == ATA_CMD_PIO_READ_EXT){
1049 printf("Hard Disk doesn't support LBA48\n");
1050 dev_state = SATA_ERROR;
1051 qc->err_mask |= AC_ERR_OTHER;
1052 return qc->err_mask;
1055 qc->err_mask |= AC_ERR_OTHER;
1056 return qc->err_mask;
1059 status = ata_busy_wait(ap, ATA_BUSY, 10);
1060 if (status & ATA_BUSY) {
1061 printf("BSY = 0 check. timeout.\n");
1062 qc->err_mask |= AC_ERR_OTHER;
1063 return qc->err_mask;
1069 if (qc->flags & ATA_QCFLAG_ACTIVE) {
1070 qc->err_mask |= AC_ERR_TIMEOUT;
1071 ata_port_freeze(ap);
1075 if (qc->flags & ATA_QCFLAG_FAILED) {
1076 if (qc->result_tf.command & (ATA_ERR | ATA_DF))
1077 qc->err_mask |= AC_ERR_DEV;
1080 qc->err_mask |= AC_ERR_OTHER;
1082 if (qc->err_mask & ~AC_ERR_OTHER)
1083 qc->err_mask &= ~AC_ERR_OTHER;
1086 *tf = qc->result_tf;
1087 err_mask = qc->err_mask;
1089 link->active_tag = preempted_tag;
1090 link->sactive = preempted_sactive;
1091 ap->qc_active = preempted_qc_active;
1092 ap->nr_active_links = preempted_nr_active_links;
1094 if (ap->flags & ATA_FLAG_DISABLED) {
1095 err_mask |= AC_ERR_SYSTEM;
1096 ap->flags &= ~ATA_FLAG_DISABLED;
1102 static void ata_qc_issue(struct ata_queued_cmd *qc)
1104 struct ata_port *ap = qc->ap;
1105 struct ata_link *link = qc->dev->link;
1106 u8 prot = qc->tf.protocol;
1108 if (ata_is_ncq(prot)) {
1110 ap->nr_active_links++;
1111 link->sactive |= 1 << qc->tag;
1113 ap->nr_active_links++;
1114 link->active_tag = qc->tag;
1117 qc->flags |= ATA_QCFLAG_ACTIVE;
1118 ap->qc_active |= 1 << qc->tag;
1120 if (qc->dev->flags & ATA_DFLAG_SLEEPING) {
1125 qc->err_mask |= ata_qc_issue_prot(qc);
1131 ata_qc_complete(qc);
1134 static unsigned int ata_qc_issue_prot(struct ata_queued_cmd *qc)
1136 struct ata_port *ap = qc->ap;
1138 if (ap->flags & ATA_FLAG_PIO_POLLING) {
1139 switch (qc->tf.protocol) {
1141 case ATA_PROT_NODATA:
1142 case ATAPI_PROT_PIO:
1143 case ATAPI_PROT_NODATA:
1144 qc->tf.flags |= ATA_TFLAG_POLLING;
1151 ata_dev_select(ap, qc->dev->devno, 1, 0);
1153 switch (qc->tf.protocol) {
1155 if (qc->tf.flags & ATA_TFLAG_POLLING)
1156 qc->tf.ctl |= ATA_NIEN;
1158 ata_tf_to_host(ap, &qc->tf);
1160 ap->hsm_task_state = HSM_ST;
1162 if (qc->tf.flags & ATA_TFLAG_POLLING)
1163 ata_pio_queue_task(ap, qc, 0);
1168 return AC_ERR_SYSTEM;
1174 static void ata_tf_to_host(struct ata_port *ap,
1175 const struct ata_taskfile *tf)
1177 ata_tf_load(ap, tf);
1178 ata_exec_command(ap, tf);
1181 static void ata_tf_load(struct ata_port *ap,
1182 const struct ata_taskfile *tf)
1184 struct ata_ioports *ioaddr = &ap->ioaddr;
1185 unsigned int is_addr = tf->flags & ATA_TFLAG_ISADDR;
1187 if (tf->ctl != ap->last_ctl) {
1188 if (ioaddr->ctl_addr)
1189 writeb(tf->ctl, ioaddr->ctl_addr);
1190 ap->last_ctl = tf->ctl;
1194 if (is_addr && (tf->flags & ATA_TFLAG_LBA48)) {
1195 writeb(tf->hob_feature, ioaddr->feature_addr);
1196 writeb(tf->hob_nsect, ioaddr->nsect_addr);
1197 writeb(tf->hob_lbal, ioaddr->lbal_addr);
1198 writeb(tf->hob_lbam, ioaddr->lbam_addr);
1199 writeb(tf->hob_lbah, ioaddr->lbah_addr);
1203 writeb(tf->feature, ioaddr->feature_addr);
1204 writeb(tf->nsect, ioaddr->nsect_addr);
1205 writeb(tf->lbal, ioaddr->lbal_addr);
1206 writeb(tf->lbam, ioaddr->lbam_addr);
1207 writeb(tf->lbah, ioaddr->lbah_addr);
1210 if (tf->flags & ATA_TFLAG_DEVICE)
1211 writeb(tf->device, ioaddr->device_addr);
1216 static void ata_exec_command(struct ata_port *ap,
1217 const struct ata_taskfile *tf)
1219 writeb(tf->command, ap->ioaddr.command_addr);
1221 readb(ap->ioaddr.altstatus_addr);
1226 static void ata_pio_queue_task(struct ata_port *ap,
1227 void *data,unsigned long delay)
1229 ap->port_task_data = data;
1232 static unsigned int ac_err_mask(u8 status)
1234 if (status & (ATA_BUSY | ATA_DRQ))
1236 if (status & (ATA_ERR | ATA_DF))
1241 static unsigned int __ac_err_mask(u8 status)
1243 unsigned int mask = ac_err_mask(status);
1245 return AC_ERR_OTHER;
1249 static void ata_pio_task(struct ata_port *arg_ap)
1251 struct ata_port *ap = arg_ap;
1252 struct ata_queued_cmd *qc = ap->port_task_data;
1258 * This is purely heuristic. This is a fast path.
1259 * Sometimes when we enter, BSY will be cleared in
1260 * a chk-status or two. If not, the drive is probably seeking
1261 * or something. Snooze for a couple msecs, then
1262 * chk-status again. If still busy, queue delayed work.
1264 status = ata_busy_wait(ap, ATA_BUSY, 5);
1265 if (status & ATA_BUSY) {
1267 status = ata_busy_wait(ap, ATA_BUSY, 10);
1268 if (status & ATA_BUSY) {
1269 ata_pio_queue_task(ap, qc, ATA_SHORT_PAUSE);
1274 poll_next = ata_hsm_move(ap, qc, status, 1);
1276 /* another command or interrupt handler
1277 * may be running at this point.
1283 static int ata_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc,
1284 u8 status, int in_wq)
1289 switch (ap->hsm_task_state) {
1291 poll_next = (qc->tf.flags & ATA_TFLAG_POLLING);
1293 if ((status & ATA_DRQ) == 0) {
1294 if (status & (ATA_ERR | ATA_DF)) {
1295 qc->err_mask |= AC_ERR_DEV;
1297 qc->err_mask |= AC_ERR_HSM;
1299 ap->hsm_task_state = HSM_ST_ERR;
1303 /* Device should not ask for data transfer (DRQ=1)
1304 * when it finds something wrong.
1305 * We ignore DRQ here and stop the HSM by
1306 * changing hsm_task_state to HSM_ST_ERR and
1307 * let the EH abort the command or reset the device.
1309 if (status & (ATA_ERR | ATA_DF)) {
1310 if (!(qc->dev->horkage & ATA_HORKAGE_STUCK_ERR)) {
1311 printf("DRQ=1 with device error, "
1312 "dev_stat 0x%X\n", status);
1313 qc->err_mask |= AC_ERR_HSM;
1314 ap->hsm_task_state = HSM_ST_ERR;
1319 if (qc->tf.protocol == ATA_PROT_PIO) {
1320 /* PIO data out protocol.
1321 * send first data block.
1323 /* ata_pio_sectors() might change the state
1324 * to HSM_ST_LAST. so, the state is changed here
1325 * before ata_pio_sectors().
1327 ap->hsm_task_state = HSM_ST;
1328 ata_pio_sectors(qc);
1330 printf("protocol is not ATA_PROT_PIO \n");
1335 if ((status & ATA_DRQ) == 0) {
1336 if (status & (ATA_ERR | ATA_DF)) {
1337 qc->err_mask |= AC_ERR_DEV;
1339 /* HSM violation. Let EH handle this.
1340 * Phantom devices also trigger this
1341 * condition. Mark hint.
1343 qc->err_mask |= AC_ERR_HSM | AC_ERR_NODEV_HINT;
1346 ap->hsm_task_state = HSM_ST_ERR;
1349 /* For PIO reads, some devices may ask for
1350 * data transfer (DRQ=1) alone with ERR=1.
1351 * We respect DRQ here and transfer one
1352 * block of junk data before changing the
1353 * hsm_task_state to HSM_ST_ERR.
1355 * For PIO writes, ERR=1 DRQ=1 doesn't make
1356 * sense since the data block has been
1357 * transferred to the device.
1359 if (status & (ATA_ERR | ATA_DF)) {
1360 qc->err_mask |= AC_ERR_DEV;
1362 if (!(qc->tf.flags & ATA_TFLAG_WRITE)) {
1363 ata_pio_sectors(qc);
1364 status = ata_wait_idle(ap);
1367 if (status & (ATA_BUSY | ATA_DRQ))
1368 qc->err_mask |= AC_ERR_HSM;
1370 /* ata_pio_sectors() might change the
1371 * state to HSM_ST_LAST. so, the state
1372 * is changed after ata_pio_sectors().
1374 ap->hsm_task_state = HSM_ST_ERR;
1378 ata_pio_sectors(qc);
1379 if (ap->hsm_task_state == HSM_ST_LAST &&
1380 (!(qc->tf.flags & ATA_TFLAG_WRITE))) {
1381 status = ata_wait_idle(ap);
1389 if (!ata_ok(status)) {
1390 qc->err_mask |= __ac_err_mask(status);
1391 ap->hsm_task_state = HSM_ST_ERR;
1395 ap->hsm_task_state = HSM_ST_IDLE;
1397 ata_hsm_qc_complete(qc, in_wq);
1403 /* make sure qc->err_mask is available to
1404 * know what's wrong and recover
1406 ap->hsm_task_state = HSM_ST_IDLE;
1408 ata_hsm_qc_complete(qc, in_wq);
1419 static void ata_pio_sectors(struct ata_queued_cmd *qc)
1421 struct ata_port *ap;
1423 qc->pdata = ap->pdata;
1427 readb(qc->ap->ioaddr.altstatus_addr);
1431 static void ata_pio_sector(struct ata_queued_cmd *qc)
1433 int do_write = (qc->tf.flags & ATA_TFLAG_WRITE);
1434 struct ata_port *ap = qc->ap;
1435 unsigned int offset;
1437 char temp_data_buf[512];
1439 if (qc->curbytes == qc->nbytes - qc->sect_size)
1440 ap->hsm_task_state = HSM_ST_LAST;
1442 offset = qc->curbytes;
1444 switch (qc->tf.command) {
1445 case ATA_CMD_ID_ATA:
1446 buf = (unsigned char *)&ata_device.id[0];
1448 case ATA_CMD_PIO_READ_EXT:
1449 case ATA_CMD_PIO_READ:
1450 case ATA_CMD_PIO_WRITE_EXT:
1451 case ATA_CMD_PIO_WRITE:
1452 buf = qc->pdata + offset;
1455 buf = (unsigned char *)&temp_data_buf[0];
1458 ata_mmio_data_xfer(qc->dev, buf, qc->sect_size, do_write);
1460 qc->curbytes += qc->sect_size;
1464 static void ata_mmio_data_xfer(struct ata_device *dev, unsigned char *buf,
1465 unsigned int buflen, int do_write)
1467 struct ata_port *ap = pap;
1468 void __iomem *data_addr = ap->ioaddr.data_addr;
1469 unsigned int words = buflen >> 1;
1470 u16 *buf16 = (u16 *)buf;
1475 for (i = 0; i < words; i++)
1476 writew(le16_to_cpu(buf16[i]), data_addr);
1478 for (i = 0; i < words; i++)
1479 buf16[i] = cpu_to_le16(readw(data_addr));
1482 if (buflen & 0x01) {
1483 __le16 align_buf[1] = { 0 };
1484 unsigned char *trailing_buf = buf + buflen - 1;
1487 memcpy(align_buf, trailing_buf, 1);
1488 writew(le16_to_cpu(align_buf[0]), data_addr);
1490 align_buf[0] = cpu_to_le16(readw(data_addr));
1491 memcpy(trailing_buf, align_buf, 1);
1496 static void ata_hsm_qc_complete(struct ata_queued_cmd *qc, int in_wq)
1498 struct ata_port *ap = qc->ap;
1501 /* EH might have kicked in while host lock is
1504 qc = &ap->qcmd[qc->tag];
1506 if (!(qc->err_mask & AC_ERR_HSM)) {
1508 ata_qc_complete(qc);
1510 ata_port_freeze(ap);
1514 if (!(qc->err_mask & AC_ERR_HSM)) {
1515 ata_qc_complete(qc);
1517 ata_port_freeze(ap);
1522 static u8 ata_irq_on(struct ata_port *ap)
1524 struct ata_ioports *ioaddr = &ap->ioaddr;
1527 ap->ctl &= ~ATA_NIEN;
1528 ap->last_ctl = ap->ctl;
1530 if (ioaddr->ctl_addr)
1531 writeb(ap->ctl, ioaddr->ctl_addr);
1533 tmp = ata_wait_idle(ap);
1538 static unsigned int ata_tag_internal(unsigned int tag)
1540 return tag == ATA_MAX_QUEUE - 1;
1543 static void ata_qc_complete(struct ata_queued_cmd *qc)
1545 struct ata_device *dev = qc->dev;
1547 qc->flags |= ATA_QCFLAG_FAILED;
1549 if (qc->flags & ATA_QCFLAG_FAILED) {
1550 if (!ata_tag_internal(qc->tag)) {
1555 if (qc->flags & ATA_QCFLAG_RESULT_TF)
1558 /* Some commands need post-processing after successful
1561 switch (qc->tf.command) {
1562 case ATA_CMD_SET_FEATURES:
1563 if (qc->tf.feature != SETFEATURES_WC_ON &&
1564 qc->tf.feature != SETFEATURES_WC_OFF)
1566 case ATA_CMD_INIT_DEV_PARAMS:
1567 case ATA_CMD_SET_MULTI:
1571 dev->flags |= ATA_DFLAG_SLEEPING;
1575 __ata_qc_complete(qc);
1578 static void fill_result_tf(struct ata_queued_cmd *qc)
1580 struct ata_port *ap = qc->ap;
1582 qc->result_tf.flags = qc->tf.flags;
1583 ata_tf_read(ap, &qc->result_tf);
1586 static void ata_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
1588 struct ata_ioports *ioaddr = &ap->ioaddr;
1590 tf->command = ata_check_status(ap);
1591 tf->feature = readb(ioaddr->error_addr);
1592 tf->nsect = readb(ioaddr->nsect_addr);
1593 tf->lbal = readb(ioaddr->lbal_addr);
1594 tf->lbam = readb(ioaddr->lbam_addr);
1595 tf->lbah = readb(ioaddr->lbah_addr);
1596 tf->device = readb(ioaddr->device_addr);
1598 if (tf->flags & ATA_TFLAG_LBA48) {
1599 if (ioaddr->ctl_addr) {
1600 writeb(tf->ctl | ATA_HOB, ioaddr->ctl_addr);
1602 tf->hob_feature = readb(ioaddr->error_addr);
1603 tf->hob_nsect = readb(ioaddr->nsect_addr);
1604 tf->hob_lbal = readb(ioaddr->lbal_addr);
1605 tf->hob_lbam = readb(ioaddr->lbam_addr);
1606 tf->hob_lbah = readb(ioaddr->lbah_addr);
1608 writeb(tf->ctl, ioaddr->ctl_addr);
1609 ap->last_ctl = tf->ctl;
1611 printf("sata_dwc warnning register read.\n");
1616 static void __ata_qc_complete(struct ata_queued_cmd *qc)
1618 struct ata_port *ap = qc->ap;
1619 struct ata_link *link = qc->dev->link;
1621 link->active_tag = ATA_TAG_POISON;
1622 ap->nr_active_links--;
1624 if (qc->flags & ATA_QCFLAG_CLEAR_EXCL && ap->excl_link == link)
1625 ap->excl_link = NULL;
1627 qc->flags &= ~ATA_QCFLAG_ACTIVE;
1628 ap->qc_active &= ~(1 << qc->tag);
1631 static void ata_qc_free(struct ata_queued_cmd *qc)
1633 struct ata_port *ap = qc->ap;
1637 if (tag < ATA_MAX_QUEUE) {
1638 qc->tag = ATA_TAG_POISON;
1639 clear_bit(tag, &ap->qc_allocated);
1643 static int check_sata_dev_state(void)
1645 unsigned long datalen;
1646 unsigned char *pdata;
1649 char temp_data_buf[512];
1654 pdata = (unsigned char*)&temp_data_buf[0];
1657 ret = ata_dev_read_sectors(pdata, datalen, 0, 1);
1663 if (i > (ATA_RESET_TIME * 100)) {
1664 printf("** TimeOUT **\n");
1665 dev_state = SATA_NODEVICE;
1669 if ((i >= 100) && ((i % 100) == 0))
1673 dev_state = SATA_READY;
1678 static unsigned int ata_dev_set_feature(struct ata_device *dev,
1679 u8 enable, u8 feature)
1681 struct ata_taskfile tf;
1682 struct ata_port *ap;
1684 unsigned int err_mask;
1686 memset(&tf, 0, sizeof(tf));
1689 tf.device = ATA_DEVICE_OBS;
1690 tf.command = ATA_CMD_SET_FEATURES;
1691 tf.feature = enable;
1692 tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
1693 tf.protocol = ATA_PROT_NODATA;
1696 err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, 0, 0);
1701 static unsigned int ata_dev_init_params(struct ata_device *dev,
1702 u16 heads, u16 sectors)
1704 struct ata_taskfile tf;
1705 struct ata_port *ap;
1707 unsigned int err_mask;
1709 if (sectors < 1 || sectors > 255 || heads < 1 || heads > 16)
1710 return AC_ERR_INVALID;
1712 memset(&tf, 0, sizeof(tf));
1714 tf.device = ATA_DEVICE_OBS;
1715 tf.command = ATA_CMD_INIT_DEV_PARAMS;
1716 tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
1717 tf.protocol = ATA_PROT_NODATA;
1719 tf.device |= (heads - 1) & 0x0f;
1721 err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, 0, 0);
1723 if (err_mask == AC_ERR_DEV && (tf.feature & ATA_ABORTED))
1729 #if defined(CONFIG_SATA_DWC) && !defined(CONFIG_LBA48)
1730 #define SATA_MAX_READ_BLK 0xFF
1732 #define SATA_MAX_READ_BLK 0xFFFF
1735 ulong sata_read(int device, ulong blknr, lbaint_t blkcnt, void *buffer)
1737 ulong start,blks, buf_addr;
1738 unsigned short smallblks;
1739 unsigned long datalen;
1740 unsigned char *pdata;
1746 if (dev_state != SATA_READY)
1749 buf_addr = (unsigned long)buffer;
1753 pdata = (unsigned char *)buf_addr;
1754 if (blks > SATA_MAX_READ_BLK) {
1755 datalen = sata_dev_desc[device].blksz * SATA_MAX_READ_BLK;
1756 smallblks = SATA_MAX_READ_BLK;
1759 n_block = (u32)smallblks;
1761 start += SATA_MAX_READ_BLK;
1762 blks -= SATA_MAX_READ_BLK;
1764 datalen = sata_dev_desc[device].blksz * SATA_MAX_READ_BLK;
1765 datalen = sata_dev_desc[device].blksz * blks;
1766 smallblks = (unsigned short)blks;
1769 n_block = (u32)smallblks;
1775 if (ata_dev_read_sectors(pdata, datalen, block, n_block) != TRUE) {
1776 printf("sata_dwc : Hard disk read error.\n");
1780 buf_addr += datalen;
1781 } while (blks != 0);
1786 static int ata_dev_read_sectors(unsigned char *pdata, unsigned long datalen,
1787 u32 block, u32 n_block)
1789 struct ata_port *ap = pap;
1790 struct ata_device *dev = &ata_device;
1791 struct ata_taskfile tf;
1792 unsigned int class = ATA_DEV_ATA;
1793 unsigned int err_mask = 0;
1795 int may_fallback = 1;
1797 if (dev_state == SATA_ERROR)
1800 ata_dev_select(ap, dev->devno, 1, 1);
1803 memset(&tf, 0, sizeof(tf));
1806 ap->flags &= ~ATA_FLAG_DISABLED;
1810 tf.device = ATA_DEVICE_OBS;
1812 temp_n_block = n_block;
1815 tf.command = ATA_CMD_PIO_READ_EXT;
1816 tf.flags |= ATA_TFLAG_LBA | ATA_TFLAG_LBA48;
1818 tf.hob_feature = 31;
1820 tf.hob_nsect = (n_block >> 8) & 0xff;
1821 tf.nsect = n_block & 0xff;
1825 tf.hob_lbal = (block >> 24) & 0xff;
1826 tf.lbah = (block >> 16) & 0xff;
1827 tf.lbam = (block >> 8) & 0xff;
1828 tf.lbal = block & 0xff;
1831 if (tf.flags & ATA_TFLAG_FUA)
1832 tf.device |= 1 << 7;
1834 tf.command = ATA_CMD_PIO_READ;
1835 tf.flags |= ATA_TFLAG_LBA ;
1838 tf.nsect = n_block & 0xff;
1840 tf.lbah = (block >> 16) & 0xff;
1841 tf.lbam = (block >> 8) & 0xff;
1842 tf.lbal = block & 0xff;
1844 tf.device = (block >> 24) & 0xf;
1846 tf.device |= 1 << 6;
1847 if (tf.flags & ATA_TFLAG_FUA)
1848 tf.device |= 1 << 7;
1852 tf.protocol = ATA_PROT_PIO;
1854 /* Some devices choke if TF registers contain garbage. Make
1855 * sure those are properly initialized.
1857 tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
1858 tf.flags |= ATA_TFLAG_POLLING;
1860 err_mask = ata_exec_internal(dev, &tf, NULL, DMA_FROM_DEVICE, 0, 0);
1863 if (err_mask & AC_ERR_NODEV_HINT) {
1864 printf("READ_SECTORS NODEV after polling detection\n");
1868 if ((err_mask == AC_ERR_DEV) && (tf.feature & ATA_ABORTED)) {
1869 /* Device or controller might have reported
1870 * the wrong device class. Give a shot at the
1871 * other IDENTIFY if the current one is
1872 * aborted by the device.
1877 if (class == ATA_DEV_ATA) {
1878 class = ATA_DEV_ATAPI;
1880 class = ATA_DEV_ATA;
1884 /* Control reaches here iff the device aborted
1885 * both flavors of IDENTIFYs which happens
1886 * sometimes with phantom devices.
1888 printf("both IDENTIFYs aborted, assuming NODEV\n");
1892 reason = "I/O error";
1899 printf("failed to READ SECTORS (%s, err_mask=0x%x)\n", reason, err_mask);
1903 #if defined(CONFIG_SATA_DWC) && !defined(CONFIG_LBA48)
1904 #define SATA_MAX_WRITE_BLK 0xFF
1906 #define SATA_MAX_WRITE_BLK 0xFFFF
1909 ulong sata_write(int device, ulong blknr, lbaint_t blkcnt, const void *buffer)
1911 ulong start,blks, buf_addr;
1912 unsigned short smallblks;
1913 unsigned long datalen;
1914 unsigned char *pdata;
1921 if (dev_state != SATA_READY)
1924 buf_addr = (unsigned long)buffer;
1928 pdata = (unsigned char *)buf_addr;
1929 if (blks > SATA_MAX_WRITE_BLK) {
1930 datalen = sata_dev_desc[device].blksz * SATA_MAX_WRITE_BLK;
1931 smallblks = SATA_MAX_WRITE_BLK;
1934 n_block = (u32)smallblks;
1936 start += SATA_MAX_WRITE_BLK;
1937 blks -= SATA_MAX_WRITE_BLK;
1939 datalen = sata_dev_desc[device].blksz * blks;
1940 smallblks = (unsigned short)blks;
1943 n_block = (u32)smallblks;
1949 if (ata_dev_write_sectors(pdata, datalen, block, n_block) != TRUE) {
1950 printf("sata_dwc : Hard disk read error.\n");
1954 buf_addr += datalen;
1955 } while (blks != 0);
1960 static int ata_dev_write_sectors(unsigned char* pdata, unsigned long datalen,
1961 u32 block, u32 n_block)
1963 struct ata_port *ap = pap;
1964 struct ata_device *dev = &ata_device;
1965 struct ata_taskfile tf;
1966 unsigned int class = ATA_DEV_ATA;
1967 unsigned int err_mask = 0;
1969 int may_fallback = 1;
1971 if (dev_state == SATA_ERROR)
1974 ata_dev_select(ap, dev->devno, 1, 1);
1977 memset(&tf, 0, sizeof(tf));
1980 ap->flags &= ~ATA_FLAG_DISABLED;
1984 tf.device = ATA_DEVICE_OBS;
1986 temp_n_block = n_block;
1990 tf.command = ATA_CMD_PIO_WRITE_EXT;
1991 tf.flags |= ATA_TFLAG_LBA | ATA_TFLAG_LBA48 | ATA_TFLAG_WRITE;
1993 tf.hob_feature = 31;
1995 tf.hob_nsect = (n_block >> 8) & 0xff;
1996 tf.nsect = n_block & 0xff;
2000 tf.hob_lbal = (block >> 24) & 0xff;
2001 tf.lbah = (block >> 16) & 0xff;
2002 tf.lbam = (block >> 8) & 0xff;
2003 tf.lbal = block & 0xff;
2006 if (tf.flags & ATA_TFLAG_FUA)
2007 tf.device |= 1 << 7;
2009 tf.command = ATA_CMD_PIO_WRITE;
2010 tf.flags |= ATA_TFLAG_LBA | ATA_TFLAG_WRITE;
2013 tf.nsect = n_block & 0xff;
2015 tf.lbah = (block >> 16) & 0xff;
2016 tf.lbam = (block >> 8) & 0xff;
2017 tf.lbal = block & 0xff;
2019 tf.device = (block >> 24) & 0xf;
2021 tf.device |= 1 << 6;
2022 if (tf.flags & ATA_TFLAG_FUA)
2023 tf.device |= 1 << 7;
2027 tf.protocol = ATA_PROT_PIO;
2029 /* Some devices choke if TF registers contain garbage. Make
2030 * sure those are properly initialized.
2032 tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
2033 tf.flags |= ATA_TFLAG_POLLING;
2035 err_mask = ata_exec_internal(dev, &tf, NULL, DMA_FROM_DEVICE, 0, 0);
2038 if (err_mask & AC_ERR_NODEV_HINT) {
2039 printf("READ_SECTORS NODEV after polling detection\n");
2043 if ((err_mask == AC_ERR_DEV) && (tf.feature & ATA_ABORTED)) {
2044 /* Device or controller might have reported
2045 * the wrong device class. Give a shot at the
2046 * other IDENTIFY if the current one is
2047 * aborted by the device.
2052 if (class == ATA_DEV_ATA) {
2053 class = ATA_DEV_ATAPI;
2055 class = ATA_DEV_ATA;
2059 /* Control reaches here iff the device aborted
2060 * both flavors of IDENTIFYs which happens
2061 * sometimes with phantom devices.
2063 printf("both IDENTIFYs aborted, assuming NODEV\n");
2067 reason = "I/O error";
2074 printf("failed to WRITE SECTORS (%s, err_mask=0x%x)\n", reason, err_mask);