2 * drivers/ata/sata_fsl.c
4 * Freescale 3.0Gbps SATA device driver
6 * Author: Ashish Kalra <ashish.kalra@freescale.com>
7 * Li Yang <leoli@freescale.com>
9 * Copyright (c) 2006-2007, 2011 Freescale Semiconductor, Inc.
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the
13 * Free Software Foundation; either version 2 of the License, or (at your
14 * option) any later version.
18 #include <linux/kernel.h>
19 #include <linux/module.h>
20 #include <linux/platform_device.h>
21 #include <linux/slab.h>
23 #include <scsi/scsi_host.h>
24 #include <scsi/scsi_cmnd.h>
25 #include <linux/libata.h>
27 #include <linux/of_platform.h>
29 /* Controller information */
31 SATA_FSL_QUEUE_DEPTH = 16,
32 SATA_FSL_MAX_PRD = 63,
33 SATA_FSL_MAX_PRD_USABLE = SATA_FSL_MAX_PRD - 1,
34 SATA_FSL_MAX_PRD_DIRECT = 16, /* Direct PRDT entries */
36 SATA_FSL_HOST_FLAGS = (ATA_FLAG_SATA | ATA_FLAG_PIO_DMA |
37 ATA_FLAG_PMP | ATA_FLAG_NCQ | ATA_FLAG_AN),
39 SATA_FSL_MAX_CMDS = SATA_FSL_QUEUE_DEPTH,
40 SATA_FSL_CMD_HDR_SIZE = 16, /* 4 DWORDS */
41 SATA_FSL_CMD_SLOT_SIZE = (SATA_FSL_MAX_CMDS * SATA_FSL_CMD_HDR_SIZE),
44 * SATA-FSL host controller supports a max. of (15+1) direct PRDEs, and
45 * chained indirect PRDEs up to a max count of 63.
46 * We are allocating an array of 63 PRDEs contiguously, but PRDE#15 will
47 * be setup as an indirect descriptor, pointing to it's next
48 * (contiguous) PRDE. Though chained indirect PRDE arrays are
49 * supported,it will be more efficient to use a direct PRDT and
50 * a single chain/link to indirect PRDE array/PRDT.
53 SATA_FSL_CMD_DESC_CFIS_SZ = 32,
54 SATA_FSL_CMD_DESC_SFIS_SZ = 32,
55 SATA_FSL_CMD_DESC_ACMD_SZ = 16,
56 SATA_FSL_CMD_DESC_RSRVD = 16,
58 SATA_FSL_CMD_DESC_SIZE = (SATA_FSL_CMD_DESC_CFIS_SZ +
59 SATA_FSL_CMD_DESC_SFIS_SZ +
60 SATA_FSL_CMD_DESC_ACMD_SZ +
61 SATA_FSL_CMD_DESC_RSRVD +
62 SATA_FSL_MAX_PRD * 16),
64 SATA_FSL_CMD_DESC_OFFSET_TO_PRDT =
65 (SATA_FSL_CMD_DESC_CFIS_SZ +
66 SATA_FSL_CMD_DESC_SFIS_SZ +
67 SATA_FSL_CMD_DESC_ACMD_SZ +
68 SATA_FSL_CMD_DESC_RSRVD),
70 SATA_FSL_CMD_DESC_AR_SZ = (SATA_FSL_CMD_DESC_SIZE * SATA_FSL_MAX_CMDS),
71 SATA_FSL_PORT_PRIV_DMA_SZ = (SATA_FSL_CMD_SLOT_SIZE +
72 SATA_FSL_CMD_DESC_AR_SZ),
75 * MPC8315 has two SATA controllers, SATA1 & SATA2
76 * (one port per controller)
77 * MPC837x has 2/4 controllers, one port per controller
80 SATA_FSL_MAX_PORTS = 1,
82 SATA_FSL_IRQ_FLAG = IRQF_SHARED,
86 * Host Controller command register set - per port
102 * Host Status Register (HStatus) bitdefs
105 GOING_OFFLINE = (1 << 30),
106 BIST_ERR = (1 << 29),
108 FATAL_ERR_HC_MASTER_ERR = (1 << 18),
109 FATAL_ERR_PARITY_ERR_TX = (1 << 17),
110 FATAL_ERR_PARITY_ERR_RX = (1 << 16),
111 FATAL_ERR_DATA_UNDERRUN = (1 << 13),
112 FATAL_ERR_DATA_OVERRUN = (1 << 12),
113 FATAL_ERR_CRC_ERR_TX = (1 << 11),
114 FATAL_ERR_CRC_ERR_RX = (1 << 10),
115 FATAL_ERR_FIFO_OVRFL_TX = (1 << 9),
116 FATAL_ERR_FIFO_OVRFL_RX = (1 << 8),
118 FATAL_ERROR_DECODE = FATAL_ERR_HC_MASTER_ERR |
119 FATAL_ERR_PARITY_ERR_TX |
120 FATAL_ERR_PARITY_ERR_RX |
121 FATAL_ERR_DATA_UNDERRUN |
122 FATAL_ERR_DATA_OVERRUN |
123 FATAL_ERR_CRC_ERR_TX |
124 FATAL_ERR_CRC_ERR_RX |
125 FATAL_ERR_FIFO_OVRFL_TX | FATAL_ERR_FIFO_OVRFL_RX,
127 INT_ON_FATAL_ERR = (1 << 5),
128 INT_ON_PHYRDY_CHG = (1 << 4),
130 INT_ON_SIGNATURE_UPDATE = (1 << 3),
131 INT_ON_SNOTIFY_UPDATE = (1 << 2),
132 INT_ON_SINGL_DEVICE_ERR = (1 << 1),
133 INT_ON_CMD_COMPLETE = 1,
135 INT_ON_ERROR = INT_ON_FATAL_ERR | INT_ON_SNOTIFY_UPDATE |
136 INT_ON_PHYRDY_CHG | INT_ON_SINGL_DEVICE_ERR,
139 * Host Control Register (HControl) bitdefs
141 HCONTROL_ONLINE_PHY_RST = (1 << 31),
142 HCONTROL_FORCE_OFFLINE = (1 << 30),
143 HCONTROL_LEGACY = (1 << 28),
144 HCONTROL_PARITY_PROT_MOD = (1 << 14),
145 HCONTROL_DPATH_PARITY = (1 << 12),
146 HCONTROL_SNOOP_ENABLE = (1 << 10),
147 HCONTROL_PMP_ATTACHED = (1 << 9),
148 HCONTROL_COPYOUT_STATFIS = (1 << 8),
149 IE_ON_FATAL_ERR = (1 << 5),
150 IE_ON_PHYRDY_CHG = (1 << 4),
151 IE_ON_SIGNATURE_UPDATE = (1 << 3),
152 IE_ON_SNOTIFY_UPDATE = (1 << 2),
153 IE_ON_SINGL_DEVICE_ERR = (1 << 1),
154 IE_ON_CMD_COMPLETE = 1,
156 DEFAULT_PORT_IRQ_ENABLE_MASK = IE_ON_FATAL_ERR | IE_ON_PHYRDY_CHG |
157 IE_ON_SIGNATURE_UPDATE | IE_ON_SNOTIFY_UPDATE |
158 IE_ON_SINGL_DEVICE_ERR | IE_ON_CMD_COMPLETE,
160 EXT_INDIRECT_SEG_PRD_FLAG = (1 << 31),
161 DATA_SNOOP_ENABLE_V1 = (1 << 22),
162 DATA_SNOOP_ENABLE_V2 = (1 << 28),
166 * SATA Superset Registers
176 * Control Status Register Set
190 /* TRANSCFG (transport-layer) configuration control */
192 TRANSCFG_RX_WATER_MARK = (1 << 4),
195 /* PHY (link-layer) configuration control */
197 PHY_BIST_ENABLE = 0x01,
201 * Command Header Table entry, i.e, command slot
202 * 4 Dwords per command slot, command header size == 64 Dwords.
204 struct cmdhdr_tbl_entry {
212 * Description information bitdefs
215 CMD_DESC_RES = (1 << 11),
216 VENDOR_SPECIFIC_BIST = (1 << 10),
217 CMD_DESC_SNOOP_ENABLE = (1 << 9),
218 FPDMA_QUEUED_CMD = (1 << 8),
221 ATAPI_CMD = (1 << 5),
227 struct command_desc {
232 u32 prdt[SATA_FSL_MAX_PRD_DIRECT * 4];
233 u32 prdt_indirect[(SATA_FSL_MAX_PRD - SATA_FSL_MAX_PRD_DIRECT) * 4];
237 * Physical region table descriptor(PRD)
247 * ata_port private data
248 * This is our per-port instance data.
250 struct sata_fsl_port_priv {
251 struct cmdhdr_tbl_entry *cmdslot;
252 dma_addr_t cmdslot_paddr;
253 struct command_desc *cmdentry;
254 dma_addr_t cmdentry_paddr;
258 * ata_port->host_set private data
260 struct sata_fsl_host_priv {
261 void __iomem *hcr_base;
262 void __iomem *ssr_base;
263 void __iomem *csr_base;
268 static inline unsigned int sata_fsl_tag(unsigned int tag,
269 void __iomem *hcr_base)
271 /* We let libATA core do actual (queue) tag allocation */
273 /* all non NCQ/queued commands should have tag#0 */
274 if (ata_tag_internal(tag)) {
275 DPRINTK("mapping internal cmds to tag#0\n");
279 if (unlikely(tag >= SATA_FSL_QUEUE_DEPTH)) {
280 DPRINTK("tag %d invalid : out of range\n", tag);
284 if (unlikely((ioread32(hcr_base + CQ)) & (1 << tag))) {
285 DPRINTK("tag %d invalid : in use!!\n", tag);
292 static void sata_fsl_setup_cmd_hdr_entry(struct sata_fsl_port_priv *pp,
293 unsigned int tag, u32 desc_info,
294 u32 data_xfer_len, u8 num_prde,
297 dma_addr_t cmd_descriptor_address;
299 cmd_descriptor_address = pp->cmdentry_paddr +
300 tag * SATA_FSL_CMD_DESC_SIZE;
302 /* NOTE: both data_xfer_len & fis_len are Dword counts */
304 pp->cmdslot[tag].cda = cpu_to_le32(cmd_descriptor_address);
305 pp->cmdslot[tag].prde_fis_len =
306 cpu_to_le32((num_prde << 16) | (fis_len << 2));
307 pp->cmdslot[tag].ttl = cpu_to_le32(data_xfer_len & ~0x03);
308 pp->cmdslot[tag].desc_info = cpu_to_le32(desc_info | (tag & 0x1F));
310 VPRINTK("cda=0x%x, prde_fis_len=0x%x, ttl=0x%x, di=0x%x\n",
311 pp->cmdslot[tag].cda,
312 pp->cmdslot[tag].prde_fis_len,
313 pp->cmdslot[tag].ttl, pp->cmdslot[tag].desc_info);
317 static unsigned int sata_fsl_fill_sg(struct ata_queued_cmd *qc, void *cmd_desc,
318 u32 *ttl, dma_addr_t cmd_desc_paddr,
321 struct scatterlist *sg;
322 unsigned int num_prde = 0;
326 * NOTE : direct & indirect prdt's are contiguously allocated
328 struct prde *prd = (struct prde *)&((struct command_desc *)
331 struct prde *prd_ptr_to_indirect_ext = NULL;
332 unsigned indirect_ext_segment_sz = 0;
333 dma_addr_t indirect_ext_segment_paddr;
336 VPRINTK("SATA FSL : cd = 0x%p, prd = 0x%p\n", cmd_desc, prd);
338 indirect_ext_segment_paddr = cmd_desc_paddr +
339 SATA_FSL_CMD_DESC_OFFSET_TO_PRDT + SATA_FSL_MAX_PRD_DIRECT * 16;
341 for_each_sg(qc->sg, sg, qc->n_elem, si) {
342 dma_addr_t sg_addr = sg_dma_address(sg);
343 u32 sg_len = sg_dma_len(sg);
345 VPRINTK("SATA FSL : fill_sg, sg_addr = 0x%llx, sg_len = %d\n",
346 (unsigned long long)sg_addr, sg_len);
348 /* warn if each s/g element is not dword aligned */
350 ata_port_err(qc->ap, "s/g addr unaligned : 0x%llx\n",
351 (unsigned long long)sg_addr);
353 ata_port_err(qc->ap, "s/g len unaligned : 0x%x\n",
356 if (num_prde == (SATA_FSL_MAX_PRD_DIRECT - 1) &&
357 sg_next(sg) != NULL) {
358 VPRINTK("setting indirect prde\n");
359 prd_ptr_to_indirect_ext = prd;
360 prd->dba = cpu_to_le32(indirect_ext_segment_paddr);
361 indirect_ext_segment_sz = 0;
366 ttl_dwords += sg_len;
367 prd->dba = cpu_to_le32(sg_addr);
368 prd->ddc_and_ext = cpu_to_le32(data_snoop | (sg_len & ~0x03));
370 VPRINTK("sg_fill, ttl=%d, dba=0x%x, ddc=0x%x\n",
371 ttl_dwords, prd->dba, prd->ddc_and_ext);
375 if (prd_ptr_to_indirect_ext)
376 indirect_ext_segment_sz += sg_len;
379 if (prd_ptr_to_indirect_ext) {
380 /* set indirect extension flag along with indirect ext. size */
381 prd_ptr_to_indirect_ext->ddc_and_ext =
382 cpu_to_le32((EXT_INDIRECT_SEG_PRD_FLAG |
384 (indirect_ext_segment_sz & ~0x03)));
391 static void sata_fsl_qc_prep(struct ata_queued_cmd *qc)
393 struct ata_port *ap = qc->ap;
394 struct sata_fsl_port_priv *pp = ap->private_data;
395 struct sata_fsl_host_priv *host_priv = ap->host->private_data;
396 void __iomem *hcr_base = host_priv->hcr_base;
397 unsigned int tag = sata_fsl_tag(qc->tag, hcr_base);
398 struct command_desc *cd;
399 u32 desc_info = CMD_DESC_RES | CMD_DESC_SNOOP_ENABLE;
404 cd = (struct command_desc *)pp->cmdentry + tag;
405 cd_paddr = pp->cmdentry_paddr + tag * SATA_FSL_CMD_DESC_SIZE;
407 ata_tf_to_fis(&qc->tf, qc->dev->link->pmp, 1, (u8 *) &cd->cfis);
409 VPRINTK("Dumping cfis : 0x%x, 0x%x, 0x%x\n",
410 cd->cfis[0], cd->cfis[1], cd->cfis[2]);
412 if (qc->tf.protocol == ATA_PROT_NCQ) {
413 VPRINTK("FPDMA xfer,Sctor cnt[0:7],[8:15] = %d,%d\n",
414 cd->cfis[3], cd->cfis[11]);
417 /* setup "ACMD - atapi command" in cmd. desc. if this is ATAPI cmd */
418 if (ata_is_atapi(qc->tf.protocol)) {
419 desc_info |= ATAPI_CMD;
420 memset((void *)&cd->acmd, 0, 32);
421 memcpy((void *)&cd->acmd, qc->cdb, qc->dev->cdb_len);
424 if (qc->flags & ATA_QCFLAG_DMAMAP)
425 num_prde = sata_fsl_fill_sg(qc, (void *)cd,
426 &ttl_dwords, cd_paddr,
427 host_priv->data_snoop);
429 if (qc->tf.protocol == ATA_PROT_NCQ)
430 desc_info |= FPDMA_QUEUED_CMD;
432 sata_fsl_setup_cmd_hdr_entry(pp, tag, desc_info, ttl_dwords,
435 VPRINTK("SATA FSL : xx_qc_prep, di = 0x%x, ttl = %d, num_prde = %d\n",
436 desc_info, ttl_dwords, num_prde);
439 static unsigned int sata_fsl_qc_issue(struct ata_queued_cmd *qc)
441 struct ata_port *ap = qc->ap;
442 struct sata_fsl_host_priv *host_priv = ap->host->private_data;
443 void __iomem *hcr_base = host_priv->hcr_base;
444 unsigned int tag = sata_fsl_tag(qc->tag, hcr_base);
446 VPRINTK("xx_qc_issue called,CQ=0x%x,CA=0x%x,CE=0x%x,CC=0x%x\n",
447 ioread32(CQ + hcr_base),
448 ioread32(CA + hcr_base),
449 ioread32(CE + hcr_base), ioread32(CC + hcr_base));
451 iowrite32(qc->dev->link->pmp, CQPMP + hcr_base);
453 /* Simply queue command to the controller/device */
454 iowrite32(1 << tag, CQ + hcr_base);
456 VPRINTK("xx_qc_issue called, tag=%d, CQ=0x%x, CA=0x%x\n",
457 tag, ioread32(CQ + hcr_base), ioread32(CA + hcr_base));
459 VPRINTK("CE=0x%x, DE=0x%x, CC=0x%x, CmdStat = 0x%x\n",
460 ioread32(CE + hcr_base),
461 ioread32(DE + hcr_base),
462 ioread32(CC + hcr_base),
463 ioread32(COMMANDSTAT + host_priv->csr_base));
468 static bool sata_fsl_qc_fill_rtf(struct ata_queued_cmd *qc)
470 struct sata_fsl_port_priv *pp = qc->ap->private_data;
471 struct sata_fsl_host_priv *host_priv = qc->ap->host->private_data;
472 void __iomem *hcr_base = host_priv->hcr_base;
473 unsigned int tag = sata_fsl_tag(qc->tag, hcr_base);
474 struct command_desc *cd;
476 cd = pp->cmdentry + tag;
478 ata_tf_from_fis(cd->sfis, &qc->result_tf);
482 static int sata_fsl_scr_write(struct ata_link *link,
483 unsigned int sc_reg_in, u32 val)
485 struct sata_fsl_host_priv *host_priv = link->ap->host->private_data;
486 void __iomem *ssr_base = host_priv->ssr_base;
500 VPRINTK("xx_scr_write, reg_in = %d\n", sc_reg);
502 iowrite32(val, ssr_base + (sc_reg * 4));
506 static int sata_fsl_scr_read(struct ata_link *link,
507 unsigned int sc_reg_in, u32 *val)
509 struct sata_fsl_host_priv *host_priv = link->ap->host->private_data;
510 void __iomem *ssr_base = host_priv->ssr_base;
524 VPRINTK("xx_scr_read, reg_in = %d\n", sc_reg);
526 *val = ioread32(ssr_base + (sc_reg * 4));
530 static void sata_fsl_freeze(struct ata_port *ap)
532 struct sata_fsl_host_priv *host_priv = ap->host->private_data;
533 void __iomem *hcr_base = host_priv->hcr_base;
536 VPRINTK("xx_freeze, CQ=0x%x, CA=0x%x, CE=0x%x, DE=0x%x\n",
537 ioread32(CQ + hcr_base),
538 ioread32(CA + hcr_base),
539 ioread32(CE + hcr_base), ioread32(DE + hcr_base));
540 VPRINTK("CmdStat = 0x%x\n",
541 ioread32(host_priv->csr_base + COMMANDSTAT));
543 /* disable interrupts on the controller/port */
544 temp = ioread32(hcr_base + HCONTROL);
545 iowrite32((temp & ~0x3F), hcr_base + HCONTROL);
547 VPRINTK("in xx_freeze : HControl = 0x%x, HStatus = 0x%x\n",
548 ioread32(hcr_base + HCONTROL), ioread32(hcr_base + HSTATUS));
551 static void sata_fsl_thaw(struct ata_port *ap)
553 struct sata_fsl_host_priv *host_priv = ap->host->private_data;
554 void __iomem *hcr_base = host_priv->hcr_base;
557 /* ack. any pending IRQs for this controller/port */
558 temp = ioread32(hcr_base + HSTATUS);
560 VPRINTK("xx_thaw, pending IRQs = 0x%x\n", (temp & 0x3F));
563 iowrite32((temp & 0x3F), hcr_base + HSTATUS);
565 /* enable interrupts on the controller/port */
566 temp = ioread32(hcr_base + HCONTROL);
567 iowrite32((temp | DEFAULT_PORT_IRQ_ENABLE_MASK), hcr_base + HCONTROL);
569 VPRINTK("xx_thaw : HControl = 0x%x, HStatus = 0x%x\n",
570 ioread32(hcr_base + HCONTROL), ioread32(hcr_base + HSTATUS));
573 static void sata_fsl_pmp_attach(struct ata_port *ap)
575 struct sata_fsl_host_priv *host_priv = ap->host->private_data;
576 void __iomem *hcr_base = host_priv->hcr_base;
579 temp = ioread32(hcr_base + HCONTROL);
580 iowrite32((temp | HCONTROL_PMP_ATTACHED), hcr_base + HCONTROL);
583 static void sata_fsl_pmp_detach(struct ata_port *ap)
585 struct sata_fsl_host_priv *host_priv = ap->host->private_data;
586 void __iomem *hcr_base = host_priv->hcr_base;
589 temp = ioread32(hcr_base + HCONTROL);
590 temp &= ~HCONTROL_PMP_ATTACHED;
591 iowrite32(temp, hcr_base + HCONTROL);
593 /* enable interrupts on the controller/port */
594 temp = ioread32(hcr_base + HCONTROL);
595 iowrite32((temp | DEFAULT_PORT_IRQ_ENABLE_MASK), hcr_base + HCONTROL);
599 static int sata_fsl_port_start(struct ata_port *ap)
601 struct device *dev = ap->host->dev;
602 struct sata_fsl_port_priv *pp;
605 struct sata_fsl_host_priv *host_priv = ap->host->private_data;
606 void __iomem *hcr_base = host_priv->hcr_base;
609 pp = kzalloc(sizeof(*pp), GFP_KERNEL);
613 mem = dma_alloc_coherent(dev, SATA_FSL_PORT_PRIV_DMA_SZ, &mem_dma,
619 memset(mem, 0, SATA_FSL_PORT_PRIV_DMA_SZ);
622 pp->cmdslot_paddr = mem_dma;
624 mem += SATA_FSL_CMD_SLOT_SIZE;
625 mem_dma += SATA_FSL_CMD_SLOT_SIZE;
628 pp->cmdentry_paddr = mem_dma;
630 ap->private_data = pp;
632 VPRINTK("CHBA = 0x%x, cmdentry_phys = 0x%x\n",
633 pp->cmdslot_paddr, pp->cmdentry_paddr);
635 /* Now, update the CHBA register in host controller cmd register set */
636 iowrite32(pp->cmdslot_paddr & 0xffffffff, hcr_base + CHBA);
639 * Now, we can bring the controller on-line & also initiate
640 * the COMINIT sequence, we simply return here and the boot-probing
641 * & device discovery process is re-initiated by libATA using a
642 * Softreset EH (dummy) session. Hence, boot probing and device
643 * discovey will be part of sata_fsl_softreset() callback.
646 temp = ioread32(hcr_base + HCONTROL);
647 iowrite32((temp | HCONTROL_ONLINE_PHY_RST), hcr_base + HCONTROL);
649 VPRINTK("HStatus = 0x%x\n", ioread32(hcr_base + HSTATUS));
650 VPRINTK("HControl = 0x%x\n", ioread32(hcr_base + HCONTROL));
651 VPRINTK("CHBA = 0x%x\n", ioread32(hcr_base + CHBA));
653 #ifdef CONFIG_MPC8315_DS
655 * Workaround for 8315DS board 3gbps link-up issue,
656 * currently limit SATA port to GEN1 speed
658 sata_fsl_scr_read(&ap->link, SCR_CONTROL, &temp);
661 sata_fsl_scr_write(&ap->link, SCR_CONTROL, temp);
663 sata_fsl_scr_read(&ap->link, SCR_CONTROL, &temp);
664 dev_warn(dev, "scr_control, speed limited to %x\n", temp);
670 static void sata_fsl_port_stop(struct ata_port *ap)
672 struct device *dev = ap->host->dev;
673 struct sata_fsl_port_priv *pp = ap->private_data;
674 struct sata_fsl_host_priv *host_priv = ap->host->private_data;
675 void __iomem *hcr_base = host_priv->hcr_base;
679 * Force host controller to go off-line, aborting current operations
681 temp = ioread32(hcr_base + HCONTROL);
682 temp &= ~HCONTROL_ONLINE_PHY_RST;
683 temp |= HCONTROL_FORCE_OFFLINE;
684 iowrite32(temp, hcr_base + HCONTROL);
686 /* Poll for controller to go offline - should happen immediately */
687 ata_wait_register(ap, hcr_base + HSTATUS, ONLINE, ONLINE, 1, 1);
689 ap->private_data = NULL;
690 dma_free_coherent(dev, SATA_FSL_PORT_PRIV_DMA_SZ,
691 pp->cmdslot, pp->cmdslot_paddr);
696 static unsigned int sata_fsl_dev_classify(struct ata_port *ap)
698 struct sata_fsl_host_priv *host_priv = ap->host->private_data;
699 void __iomem *hcr_base = host_priv->hcr_base;
700 struct ata_taskfile tf;
703 temp = ioread32(hcr_base + SIGNATURE);
705 VPRINTK("raw sig = 0x%x\n", temp);
706 VPRINTK("HStatus = 0x%x\n", ioread32(hcr_base + HSTATUS));
707 VPRINTK("HControl = 0x%x\n", ioread32(hcr_base + HCONTROL));
709 tf.lbah = (temp >> 24) & 0xff;
710 tf.lbam = (temp >> 16) & 0xff;
711 tf.lbal = (temp >> 8) & 0xff;
712 tf.nsect = temp & 0xff;
714 return ata_dev_classify(&tf);
717 static int sata_fsl_hardreset(struct ata_link *link, unsigned int *class,
718 unsigned long deadline)
720 struct ata_port *ap = link->ap;
721 struct sata_fsl_host_priv *host_priv = ap->host->private_data;
722 void __iomem *hcr_base = host_priv->hcr_base;
725 unsigned long start_jiffies;
727 DPRINTK("in xx_hardreset\n");
731 * Force host controller to go off-line, aborting current operations
733 temp = ioread32(hcr_base + HCONTROL);
734 temp &= ~HCONTROL_ONLINE_PHY_RST;
735 iowrite32(temp, hcr_base + HCONTROL);
737 /* Poll for controller to go offline */
738 temp = ata_wait_register(ap, hcr_base + HSTATUS, ONLINE, ONLINE,
742 ata_port_err(ap, "Hardreset failed, not off-lined %d\n", i);
745 * Try to offline controller atleast twice
751 goto try_offline_again;
754 DPRINTK("hardreset, controller off-lined\n");
755 VPRINTK("HStatus = 0x%x\n", ioread32(hcr_base + HSTATUS));
756 VPRINTK("HControl = 0x%x\n", ioread32(hcr_base + HCONTROL));
759 * PHY reset should remain asserted for atleast 1ms
764 * Now, bring the host controller online again, this can take time
765 * as PHY reset and communication establishment, 1st D2H FIS and
766 * device signature update is done, on safe side assume 500ms
767 * NOTE : Host online status may be indicated immediately!!
770 temp = ioread32(hcr_base + HCONTROL);
771 temp |= (HCONTROL_ONLINE_PHY_RST | HCONTROL_SNOOP_ENABLE);
772 temp |= HCONTROL_PMP_ATTACHED;
773 iowrite32(temp, hcr_base + HCONTROL);
775 temp = ata_wait_register(ap, hcr_base + HSTATUS, ONLINE, 0, 1, 500);
777 if (!(temp & ONLINE)) {
778 ata_port_err(ap, "Hardreset failed, not on-lined\n");
782 DPRINTK("hardreset, controller off-lined & on-lined\n");
783 VPRINTK("HStatus = 0x%x\n", ioread32(hcr_base + HSTATUS));
784 VPRINTK("HControl = 0x%x\n", ioread32(hcr_base + HCONTROL));
787 * First, wait for the PHYRDY change to occur before waiting for
788 * the signature, and also verify if SStatus indicates device
792 temp = ata_wait_register(ap, hcr_base + HSTATUS, 0xFF, 0, 1, 500);
793 if ((!(temp & 0x10)) || ata_link_offline(link)) {
794 ata_port_warn(ap, "No Device OR PHYRDY change,Hstatus = 0x%x\n",
795 ioread32(hcr_base + HSTATUS));
796 *class = ATA_DEV_NONE;
801 * Wait for the first D2H from device,i.e,signature update notification
803 start_jiffies = jiffies;
804 temp = ata_wait_register(ap, hcr_base + HSTATUS, 0xFF, 0x10,
805 500, jiffies_to_msecs(deadline - start_jiffies));
807 if ((temp & 0xFF) != 0x18) {
808 ata_port_warn(ap, "No Signature Update\n");
809 *class = ATA_DEV_NONE;
810 goto do_followup_srst;
812 ata_port_info(ap, "Signature Update detected @ %d msecs\n",
813 jiffies_to_msecs(jiffies - start_jiffies));
814 *class = sata_fsl_dev_classify(ap);
820 * request libATA to perform follow-up softreset
828 static int sata_fsl_softreset(struct ata_link *link, unsigned int *class,
829 unsigned long deadline)
831 struct ata_port *ap = link->ap;
832 struct sata_fsl_port_priv *pp = ap->private_data;
833 struct sata_fsl_host_priv *host_priv = ap->host->private_data;
834 void __iomem *hcr_base = host_priv->hcr_base;
835 int pmp = sata_srst_pmp(link);
837 struct ata_taskfile tf;
841 DPRINTK("in xx_softreset\n");
843 if (ata_link_offline(link)) {
844 DPRINTK("PHY reports no device\n");
845 *class = ATA_DEV_NONE;
850 * Send a device reset (SRST) explicitly on command slot #0
851 * Check : will the command queue (reg) be cleared during offlining ??
852 * Also we will be online only if Phy commn. has been established
853 * and device presence has been detected, therefore if we have
854 * reached here, we can send a command to the target device
857 DPRINTK("Sending SRST/device reset\n");
859 ata_tf_init(link->device, &tf);
860 cfis = (u8 *) &pp->cmdentry->cfis;
862 /* device reset/SRST is a control register update FIS, uses tag0 */
863 sata_fsl_setup_cmd_hdr_entry(pp, 0,
864 SRST_CMD | CMD_DESC_RES | CMD_DESC_SNOOP_ENABLE, 0, 0, 5);
866 tf.ctl |= ATA_SRST; /* setup SRST bit in taskfile control reg */
867 ata_tf_to_fis(&tf, pmp, 0, cfis);
869 DPRINTK("Dumping cfis : 0x%x, 0x%x, 0x%x, 0x%x\n",
870 cfis[0], cfis[1], cfis[2], cfis[3]);
873 * Queue SRST command to the controller/device, ensure that no
874 * other commands are active on the controller/device
877 DPRINTK("@Softreset, CQ = 0x%x, CA = 0x%x, CC = 0x%x\n",
878 ioread32(CQ + hcr_base),
879 ioread32(CA + hcr_base), ioread32(CC + hcr_base));
881 iowrite32(0xFFFF, CC + hcr_base);
882 if (pmp != SATA_PMP_CTRL_PORT)
883 iowrite32(pmp, CQPMP + hcr_base);
884 iowrite32(1, CQ + hcr_base);
886 temp = ata_wait_register(ap, CQ + hcr_base, 0x1, 0x1, 1, 5000);
888 ata_port_warn(ap, "ATA_SRST issue failed\n");
890 DPRINTK("Softreset@5000,CQ=0x%x,CA=0x%x,CC=0x%x\n",
891 ioread32(CQ + hcr_base),
892 ioread32(CA + hcr_base), ioread32(CC + hcr_base));
894 sata_fsl_scr_read(&ap->link, SCR_ERROR, &Serror);
896 DPRINTK("HStatus = 0x%x\n", ioread32(hcr_base + HSTATUS));
897 DPRINTK("HControl = 0x%x\n", ioread32(hcr_base + HCONTROL));
898 DPRINTK("Serror = 0x%x\n", Serror);
905 * SATA device enters reset state after receiving a Control register
906 * FIS with SRST bit asserted and it awaits another H2D Control reg.
907 * FIS with SRST bit cleared, then the device does internal diags &
908 * initialization, followed by indicating it's initialization status
909 * using ATA signature D2H register FIS to the host controller.
912 sata_fsl_setup_cmd_hdr_entry(pp, 0, CMD_DESC_RES | CMD_DESC_SNOOP_ENABLE,
915 tf.ctl &= ~ATA_SRST; /* 2nd H2D Ctl. register FIS */
916 ata_tf_to_fis(&tf, pmp, 0, cfis);
918 if (pmp != SATA_PMP_CTRL_PORT)
919 iowrite32(pmp, CQPMP + hcr_base);
920 iowrite32(1, CQ + hcr_base);
921 ata_msleep(ap, 150); /* ?? */
924 * The above command would have signalled an interrupt on command
925 * complete, which needs special handling, by clearing the Nth
926 * command bit of the CCreg
928 iowrite32(0x01, CC + hcr_base); /* We know it will be cmd#0 always */
930 DPRINTK("SATA FSL : Now checking device signature\n");
932 *class = ATA_DEV_NONE;
934 /* Verify if SStatus indicates device presence */
935 if (ata_link_online(link)) {
937 * if we are here, device presence has been detected,
938 * 1st D2H FIS would have been received, but sfis in
939 * command desc. is not updated, but signature register
940 * would have been updated
943 *class = sata_fsl_dev_classify(ap);
945 DPRINTK("class = %d\n", *class);
946 VPRINTK("ccreg = 0x%x\n", ioread32(hcr_base + CC));
947 VPRINTK("cereg = 0x%x\n", ioread32(hcr_base + CE));
956 static void sata_fsl_error_handler(struct ata_port *ap)
959 DPRINTK("in xx_error_handler\n");
960 sata_pmp_error_handler(ap);
964 static void sata_fsl_post_internal_cmd(struct ata_queued_cmd *qc)
966 if (qc->flags & ATA_QCFLAG_FAILED)
967 qc->err_mask |= AC_ERR_OTHER;
970 /* make DMA engine forget about the failed command */
975 static void sata_fsl_error_intr(struct ata_port *ap)
977 struct sata_fsl_host_priv *host_priv = ap->host->private_data;
978 void __iomem *hcr_base = host_priv->hcr_base;
979 u32 hstatus, dereg=0, cereg = 0, SError = 0;
980 unsigned int err_mask = 0, action = 0;
981 int freeze = 0, abort=0;
982 struct ata_link *link = NULL;
983 struct ata_queued_cmd *qc = NULL;
984 struct ata_eh_info *ehi;
986 hstatus = ioread32(hcr_base + HSTATUS);
987 cereg = ioread32(hcr_base + CE);
989 /* first, analyze and record host port events */
991 ehi = &link->eh_info;
992 ata_ehi_clear_desc(ehi);
995 * Handle & Clear SError
998 sata_fsl_scr_read(&ap->link, SCR_ERROR, &SError);
999 if (unlikely(SError & 0xFFFF0000))
1000 sata_fsl_scr_write(&ap->link, SCR_ERROR, SError);
1002 DPRINTK("error_intr,hStat=0x%x,CE=0x%x,DE =0x%x,SErr=0x%x\n",
1003 hstatus, cereg, ioread32(hcr_base + DE), SError);
1005 /* handle fatal errors */
1006 if (hstatus & FATAL_ERROR_DECODE) {
1007 ehi->err_mask |= AC_ERR_ATA_BUS;
1008 ehi->action |= ATA_EH_SOFTRESET;
1013 /* Handle SDB FIS receive & notify update */
1014 if (hstatus & INT_ON_SNOTIFY_UPDATE)
1015 sata_async_notification(ap);
1017 /* Handle PHYRDY change notification */
1018 if (hstatus & INT_ON_PHYRDY_CHG) {
1019 DPRINTK("SATA FSL: PHYRDY change indication\n");
1021 /* Setup a soft-reset EH action */
1022 ata_ehi_hotplugged(ehi);
1023 ata_ehi_push_desc(ehi, "%s", "PHY RDY changed");
1027 /* handle single device errors */
1030 * clear the command error, also clears queue to the device
1031 * in error, and we can (re)issue commands to this device.
1032 * When a device is in error all commands queued into the
1033 * host controller and at the device are considered aborted
1034 * and the queue for that device is stopped. Now, after
1035 * clearing the device error, we can issue commands to the
1036 * device to interrogate it to find the source of the error.
1040 DPRINTK("single device error, CE=0x%x, DE=0x%x\n",
1041 ioread32(hcr_base + CE), ioread32(hcr_base + DE));
1043 /* find out the offending link and qc */
1044 if (ap->nr_pmp_links) {
1045 unsigned int dev_num;
1047 dereg = ioread32(hcr_base + DE);
1048 iowrite32(dereg, hcr_base + DE);
1049 iowrite32(cereg, hcr_base + CE);
1051 dev_num = ffs(dereg) - 1;
1052 if (dev_num < ap->nr_pmp_links && dereg != 0) {
1053 link = &ap->pmp_link[dev_num];
1054 ehi = &link->eh_info;
1055 qc = ata_qc_from_tag(ap, link->active_tag);
1057 * We should consider this as non fatal error,
1058 * and TF must be updated as done below.
1061 err_mask |= AC_ERR_DEV;
1064 err_mask |= AC_ERR_HSM;
1065 action |= ATA_EH_HARDRESET;
1069 dereg = ioread32(hcr_base + DE);
1070 iowrite32(dereg, hcr_base + DE);
1071 iowrite32(cereg, hcr_base + CE);
1073 qc = ata_qc_from_tag(ap, link->active_tag);
1075 * We should consider this as non fatal error,
1076 * and TF must be updated as done below.
1078 err_mask |= AC_ERR_DEV;
1082 /* record error info */
1084 qc->err_mask |= err_mask;
1086 ehi->err_mask |= err_mask;
1088 ehi->action |= action;
1090 /* freeze or abort */
1092 ata_port_freeze(ap);
1095 ata_link_abort(qc->dev->link);
1101 static void sata_fsl_host_intr(struct ata_port *ap)
1103 struct sata_fsl_host_priv *host_priv = ap->host->private_data;
1104 void __iomem *hcr_base = host_priv->hcr_base;
1105 u32 hstatus, done_mask = 0;
1106 struct ata_queued_cmd *qc;
1109 hstatus = ioread32(hcr_base + HSTATUS);
1111 sata_fsl_scr_read(&ap->link, SCR_ERROR, &SError);
1113 if (unlikely(SError & 0xFFFF0000)) {
1114 DPRINTK("serror @host_intr : 0x%x\n", SError);
1115 sata_fsl_error_intr(ap);
1118 if (unlikely(hstatus & INT_ON_ERROR)) {
1119 DPRINTK("error interrupt!!\n");
1120 sata_fsl_error_intr(ap);
1124 /* Read command completed register */
1125 done_mask = ioread32(hcr_base + CC);
1127 VPRINTK("Status of all queues :\n");
1128 VPRINTK("done_mask/CC = 0x%x, CA = 0x%x, CE=0x%x,CQ=0x%x,apqa=0x%x\n",
1130 ioread32(hcr_base + CA),
1131 ioread32(hcr_base + CE),
1132 ioread32(hcr_base + CQ),
1135 if (done_mask & ap->qc_active) {
1137 /* clear CC bit, this will also complete the interrupt */
1138 iowrite32(done_mask, hcr_base + CC);
1140 DPRINTK("Status of all queues :\n");
1141 DPRINTK("done_mask/CC = 0x%x, CA = 0x%x, CE=0x%x\n",
1142 done_mask, ioread32(hcr_base + CA),
1143 ioread32(hcr_base + CE));
1145 for (i = 0; i < SATA_FSL_QUEUE_DEPTH; i++) {
1146 if (done_mask & (1 << i))
1148 ("completing ncq cmd,tag=%d,CC=0x%x,CA=0x%x\n",
1149 i, ioread32(hcr_base + CC),
1150 ioread32(hcr_base + CA));
1152 ata_qc_complete_multiple(ap, ap->qc_active ^ done_mask);
1155 } else if ((ap->qc_active & (1 << ATA_TAG_INTERNAL))) {
1156 iowrite32(1, hcr_base + CC);
1157 qc = ata_qc_from_tag(ap, ATA_TAG_INTERNAL);
1159 DPRINTK("completing non-ncq cmd, CC=0x%x\n",
1160 ioread32(hcr_base + CC));
1163 ata_qc_complete(qc);
1166 /* Spurious Interrupt!! */
1167 DPRINTK("spurious interrupt!!, CC = 0x%x\n",
1168 ioread32(hcr_base + CC));
1169 iowrite32(done_mask, hcr_base + CC);
1174 static irqreturn_t sata_fsl_interrupt(int irq, void *dev_instance)
1176 struct ata_host *host = dev_instance;
1177 struct sata_fsl_host_priv *host_priv = host->private_data;
1178 void __iomem *hcr_base = host_priv->hcr_base;
1179 u32 interrupt_enables;
1180 unsigned handled = 0;
1181 struct ata_port *ap;
1183 /* ack. any pending IRQs for this controller/port */
1184 interrupt_enables = ioread32(hcr_base + HSTATUS);
1185 interrupt_enables &= 0x3F;
1187 DPRINTK("interrupt status 0x%x\n", interrupt_enables);
1189 if (!interrupt_enables)
1192 spin_lock(&host->lock);
1194 /* Assuming one port per host controller */
1196 ap = host->ports[0];
1198 sata_fsl_host_intr(ap);
1200 dev_warn(host->dev, "interrupt on disabled port 0\n");
1203 iowrite32(interrupt_enables, hcr_base + HSTATUS);
1206 spin_unlock(&host->lock);
1208 return IRQ_RETVAL(handled);
1212 * Multiple ports are represented by multiple SATA controllers with
1213 * one port per controller
1215 static int sata_fsl_init_controller(struct ata_host *host)
1217 struct sata_fsl_host_priv *host_priv = host->private_data;
1218 void __iomem *hcr_base = host_priv->hcr_base;
1222 * NOTE : We cannot bring the controller online before setting
1223 * the CHBA, hence main controller initialization is done as
1224 * part of the port_start() callback
1227 /* sata controller to operate in enterprise mode */
1228 temp = ioread32(hcr_base + HCONTROL);
1229 iowrite32(temp & ~HCONTROL_LEGACY, hcr_base + HCONTROL);
1231 /* ack. any pending IRQs for this controller/port */
1232 temp = ioread32(hcr_base + HSTATUS);
1234 iowrite32((temp & 0x3F), hcr_base + HSTATUS);
1236 /* Keep interrupts disabled on the controller */
1237 temp = ioread32(hcr_base + HCONTROL);
1238 iowrite32((temp & ~0x3F), hcr_base + HCONTROL);
1240 /* Disable interrupt coalescing control(icc), for the moment */
1241 DPRINTK("icc = 0x%x\n", ioread32(hcr_base + ICC));
1242 iowrite32(0x01000000, hcr_base + ICC);
1244 /* clear error registers, SError is cleared by libATA */
1245 iowrite32(0x00000FFFF, hcr_base + CE);
1246 iowrite32(0x00000FFFF, hcr_base + DE);
1249 * host controller will be brought on-line, during xx_port_start()
1250 * callback, that should also initiate the OOB, COMINIT sequence
1253 DPRINTK("HStatus = 0x%x\n", ioread32(hcr_base + HSTATUS));
1254 DPRINTK("HControl = 0x%x\n", ioread32(hcr_base + HCONTROL));
1260 * scsi mid-layer and libata interface structures
1262 static struct scsi_host_template sata_fsl_sht = {
1263 ATA_NCQ_SHT("sata_fsl"),
1264 .can_queue = SATA_FSL_QUEUE_DEPTH,
1265 .sg_tablesize = SATA_FSL_MAX_PRD_USABLE,
1266 .dma_boundary = ATA_DMA_BOUNDARY,
1269 static struct ata_port_operations sata_fsl_ops = {
1270 .inherits = &sata_pmp_port_ops,
1272 .qc_defer = ata_std_qc_defer,
1273 .qc_prep = sata_fsl_qc_prep,
1274 .qc_issue = sata_fsl_qc_issue,
1275 .qc_fill_rtf = sata_fsl_qc_fill_rtf,
1277 .scr_read = sata_fsl_scr_read,
1278 .scr_write = sata_fsl_scr_write,
1280 .freeze = sata_fsl_freeze,
1281 .thaw = sata_fsl_thaw,
1282 .softreset = sata_fsl_softreset,
1283 .hardreset = sata_fsl_hardreset,
1284 .pmp_softreset = sata_fsl_softreset,
1285 .error_handler = sata_fsl_error_handler,
1286 .post_internal_cmd = sata_fsl_post_internal_cmd,
1288 .port_start = sata_fsl_port_start,
1289 .port_stop = sata_fsl_port_stop,
1291 .pmp_attach = sata_fsl_pmp_attach,
1292 .pmp_detach = sata_fsl_pmp_detach,
1295 static const struct ata_port_info sata_fsl_port_info[] = {
1297 .flags = SATA_FSL_HOST_FLAGS,
1298 .pio_mask = ATA_PIO4,
1299 .udma_mask = ATA_UDMA6,
1300 .port_ops = &sata_fsl_ops,
1304 static int sata_fsl_probe(struct platform_device *ofdev)
1306 int retval = -ENXIO;
1307 void __iomem *hcr_base = NULL;
1308 void __iomem *ssr_base = NULL;
1309 void __iomem *csr_base = NULL;
1310 struct sata_fsl_host_priv *host_priv = NULL;
1312 struct ata_host *host;
1315 struct ata_port_info pi = sata_fsl_port_info[0];
1316 const struct ata_port_info *ppi[] = { &pi, NULL };
1318 dev_info(&ofdev->dev, "Sata FSL Platform/CSB Driver init\n");
1320 hcr_base = of_iomap(ofdev->dev.of_node, 0);
1322 goto error_exit_with_cleanup;
1324 ssr_base = hcr_base + 0x100;
1325 csr_base = hcr_base + 0x140;
1327 if (!of_device_is_compatible(ofdev->dev.of_node, "fsl,mpc8315-sata")) {
1328 temp = ioread32(csr_base + TRANSCFG);
1329 temp = temp & 0xffffffe0;
1330 iowrite32(temp | TRANSCFG_RX_WATER_MARK, csr_base + TRANSCFG);
1333 DPRINTK("@reset i/o = 0x%x\n", ioread32(csr_base + TRANSCFG));
1334 DPRINTK("sizeof(cmd_desc) = %d\n", sizeof(struct command_desc));
1335 DPRINTK("sizeof(#define cmd_desc) = %d\n", SATA_FSL_CMD_DESC_SIZE);
1337 host_priv = kzalloc(sizeof(struct sata_fsl_host_priv), GFP_KERNEL);
1339 goto error_exit_with_cleanup;
1341 host_priv->hcr_base = hcr_base;
1342 host_priv->ssr_base = ssr_base;
1343 host_priv->csr_base = csr_base;
1345 irq = irq_of_parse_and_map(ofdev->dev.of_node, 0);
1347 dev_err(&ofdev->dev, "invalid irq from platform\n");
1348 goto error_exit_with_cleanup;
1350 host_priv->irq = irq;
1352 if (of_device_is_compatible(ofdev->dev.of_node, "fsl,pq-sata-v2"))
1353 host_priv->data_snoop = DATA_SNOOP_ENABLE_V2;
1355 host_priv->data_snoop = DATA_SNOOP_ENABLE_V1;
1357 /* allocate host structure */
1358 host = ata_host_alloc_pinfo(&ofdev->dev, ppi, SATA_FSL_MAX_PORTS);
1360 /* host->iomap is not used currently */
1361 host->private_data = host_priv;
1363 /* initialize host controller */
1364 sata_fsl_init_controller(host);
1367 * Now, register with libATA core, this will also initiate the
1368 * device discovery process, invoking our port_start() handler &
1369 * error_handler() to execute a dummy Softreset EH session
1371 ata_host_activate(host, irq, sata_fsl_interrupt, SATA_FSL_IRQ_FLAG,
1374 dev_set_drvdata(&ofdev->dev, host);
1378 error_exit_with_cleanup:
1388 static int sata_fsl_remove(struct platform_device *ofdev)
1390 struct ata_host *host = dev_get_drvdata(&ofdev->dev);
1391 struct sata_fsl_host_priv *host_priv = host->private_data;
1393 ata_host_detach(host);
1395 dev_set_drvdata(&ofdev->dev, NULL);
1397 irq_dispose_mapping(host_priv->irq);
1398 iounmap(host_priv->hcr_base);
1405 static int sata_fsl_suspend(struct platform_device *op, pm_message_t state)
1407 struct ata_host *host = dev_get_drvdata(&op->dev);
1408 return ata_host_suspend(host, state);
1411 static int sata_fsl_resume(struct platform_device *op)
1413 struct ata_host *host = dev_get_drvdata(&op->dev);
1414 struct sata_fsl_host_priv *host_priv = host->private_data;
1416 void __iomem *hcr_base = host_priv->hcr_base;
1417 struct ata_port *ap = host->ports[0];
1418 struct sata_fsl_port_priv *pp = ap->private_data;
1420 ret = sata_fsl_init_controller(host);
1422 dev_err(&op->dev, "Error initializing hardware\n");
1426 /* Recovery the CHBA register in host controller cmd register set */
1427 iowrite32(pp->cmdslot_paddr & 0xffffffff, hcr_base + CHBA);
1429 iowrite32((ioread32(hcr_base + HCONTROL)
1430 | HCONTROL_ONLINE_PHY_RST
1431 | HCONTROL_SNOOP_ENABLE
1432 | HCONTROL_PMP_ATTACHED),
1433 hcr_base + HCONTROL);
1435 ata_host_resume(host);
1440 static struct of_device_id fsl_sata_match[] = {
1442 .compatible = "fsl,pq-sata",
1445 .compatible = "fsl,pq-sata-v2",
1450 MODULE_DEVICE_TABLE(of, fsl_sata_match);
1452 static struct platform_driver fsl_sata_driver = {
1455 .owner = THIS_MODULE,
1456 .of_match_table = fsl_sata_match,
1458 .probe = sata_fsl_probe,
1459 .remove = sata_fsl_remove,
1461 .suspend = sata_fsl_suspend,
1462 .resume = sata_fsl_resume,
1466 module_platform_driver(fsl_sata_driver);
1468 MODULE_LICENSE("GPL");
1469 MODULE_AUTHOR("Ashish Kalra, Freescale Semiconductor");
1470 MODULE_DESCRIPTION("Freescale 3.0Gbps SATA controller low level driver");
1471 MODULE_VERSION("1.10");