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faf0b2e5 LY |
1 | /* |
2 | * drivers/ata/sata_fsl.c | |
3 | * | |
4 | * Freescale 3.0Gbps SATA device driver | |
5 | * | |
6 | * Author: Ashish Kalra <ashish.kalra@freescale.com> | |
7 | * Li Yang <leoli@freescale.com> | |
8 | * | |
2f957fc9 | 9 | * Copyright (c) 2006-2007, 2011 Freescale Semiconductor, Inc. |
faf0b2e5 LY |
10 | * |
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. | |
15 | * | |
16 | */ | |
17 | ||
18 | #include <linux/kernel.h> | |
19 | #include <linux/module.h> | |
20 | #include <linux/platform_device.h> | |
5a0e3ad6 | 21 | #include <linux/slab.h> |
faf0b2e5 LY |
22 | |
23 | #include <scsi/scsi_host.h> | |
24 | #include <scsi/scsi_cmnd.h> | |
25 | #include <linux/libata.h> | |
26 | #include <asm/io.h> | |
27 | #include <linux/of_platform.h> | |
28 | ||
29 | /* Controller information */ | |
30 | enum { | |
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 */ | |
35 | ||
9cbe056f SS |
36 | SATA_FSL_HOST_FLAGS = (ATA_FLAG_SATA | ATA_FLAG_PIO_DMA | |
37 | ATA_FLAG_PMP | ATA_FLAG_NCQ | ATA_FLAG_AN), | |
faf0b2e5 LY |
38 | |
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), | |
42 | ||
43 | /* | |
44 | * SATA-FSL host controller supports a max. of (15+1) direct PRDEs, and | |
25985edc | 45 | * chained indirect PRDEs up to a max count of 63. |
af901ca1 | 46 | * We are allocating an array of 63 PRDEs contiguously, but PRDE#15 will |
faf0b2e5 | 47 | * be setup as an indirect descriptor, pointing to it's next |
af901ca1 | 48 | * (contiguous) PRDE. Though chained indirect PRDE arrays are |
faf0b2e5 LY |
49 | * supported,it will be more efficient to use a direct PRDT and |
50 | * a single chain/link to indirect PRDE array/PRDT. | |
51 | */ | |
52 | ||
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, | |
57 | ||
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), | |
63 | ||
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), | |
69 | ||
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), | |
73 | ||
74 | /* | |
75 | * MPC8315 has two SATA controllers, SATA1 & SATA2 | |
76 | * (one port per controller) | |
77 | * MPC837x has 2/4 controllers, one port per controller | |
78 | */ | |
79 | ||
80 | SATA_FSL_MAX_PORTS = 1, | |
81 | ||
82 | SATA_FSL_IRQ_FLAG = IRQF_SHARED, | |
83 | }; | |
84 | ||
85 | /* | |
86 | * Host Controller command register set - per port | |
87 | */ | |
88 | enum { | |
89 | CQ = 0, | |
90 | CA = 8, | |
91 | CC = 0x10, | |
92 | CE = 0x18, | |
93 | DE = 0x20, | |
94 | CHBA = 0x24, | |
95 | HSTATUS = 0x28, | |
96 | HCONTROL = 0x2C, | |
97 | CQPMP = 0x30, | |
98 | SIGNATURE = 0x34, | |
99 | ICC = 0x38, | |
100 | ||
101 | /* | |
102 | * Host Status Register (HStatus) bitdefs | |
103 | */ | |
104 | ONLINE = (1 << 31), | |
105 | GOING_OFFLINE = (1 << 30), | |
106 | BIST_ERR = (1 << 29), | |
107 | ||
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), | |
117 | ||
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, | |
126 | ||
127 | INT_ON_FATAL_ERR = (1 << 5), | |
128 | INT_ON_PHYRDY_CHG = (1 << 4), | |
129 | ||
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, | |
134 | ||
fd6c29e3 | 135 | INT_ON_ERROR = INT_ON_FATAL_ERR | INT_ON_SNOTIFY_UPDATE | |
faf0b2e5 LY |
136 | INT_ON_PHYRDY_CHG | INT_ON_SINGL_DEVICE_ERR, |
137 | ||
138 | /* | |
139 | * Host Control Register (HControl) bitdefs | |
140 | */ | |
141 | HCONTROL_ONLINE_PHY_RST = (1 << 31), | |
142 | HCONTROL_FORCE_OFFLINE = (1 << 30), | |
143 | HCONTROL_PARITY_PROT_MOD = (1 << 14), | |
144 | HCONTROL_DPATH_PARITY = (1 << 12), | |
145 | HCONTROL_SNOOP_ENABLE = (1 << 10), | |
146 | HCONTROL_PMP_ATTACHED = (1 << 9), | |
147 | HCONTROL_COPYOUT_STATFIS = (1 << 8), | |
148 | IE_ON_FATAL_ERR = (1 << 5), | |
149 | IE_ON_PHYRDY_CHG = (1 << 4), | |
150 | IE_ON_SIGNATURE_UPDATE = (1 << 3), | |
151 | IE_ON_SNOTIFY_UPDATE = (1 << 2), | |
152 | IE_ON_SINGL_DEVICE_ERR = (1 << 1), | |
153 | IE_ON_CMD_COMPLETE = 1, | |
154 | ||
155 | DEFAULT_PORT_IRQ_ENABLE_MASK = IE_ON_FATAL_ERR | IE_ON_PHYRDY_CHG | | |
fd6c29e3 | 156 | IE_ON_SIGNATURE_UPDATE | IE_ON_SNOTIFY_UPDATE | |
faf0b2e5 LY |
157 | IE_ON_SINGL_DEVICE_ERR | IE_ON_CMD_COMPLETE, |
158 | ||
159 | EXT_INDIRECT_SEG_PRD_FLAG = (1 << 31), | |
2f957fc9 X |
160 | DATA_SNOOP_ENABLE_V1 = (1 << 22), |
161 | DATA_SNOOP_ENABLE_V2 = (1 << 28), | |
faf0b2e5 LY |
162 | }; |
163 | ||
164 | /* | |
165 | * SATA Superset Registers | |
166 | */ | |
167 | enum { | |
168 | SSTATUS = 0, | |
169 | SERROR = 4, | |
170 | SCONTROL = 8, | |
171 | SNOTIFY = 0xC, | |
172 | }; | |
173 | ||
174 | /* | |
175 | * Control Status Register Set | |
176 | */ | |
177 | enum { | |
178 | TRANSCFG = 0, | |
179 | TRANSSTATUS = 4, | |
180 | LINKCFG = 8, | |
181 | LINKCFG1 = 0xC, | |
182 | LINKCFG2 = 0x10, | |
183 | LINKSTATUS = 0x14, | |
184 | LINKSTATUS1 = 0x18, | |
185 | PHYCTRLCFG = 0x1C, | |
186 | COMMANDSTAT = 0x20, | |
187 | }; | |
188 | ||
578ca87c PK |
189 | /* TRANSCFG (transport-layer) configuration control */ |
190 | enum { | |
191 | TRANSCFG_RX_WATER_MARK = (1 << 4), | |
192 | }; | |
193 | ||
faf0b2e5 LY |
194 | /* PHY (link-layer) configuration control */ |
195 | enum { | |
196 | PHY_BIST_ENABLE = 0x01, | |
197 | }; | |
198 | ||
199 | /* | |
200 | * Command Header Table entry, i.e, command slot | |
201 | * 4 Dwords per command slot, command header size == 64 Dwords. | |
202 | */ | |
203 | struct cmdhdr_tbl_entry { | |
204 | u32 cda; | |
205 | u32 prde_fis_len; | |
206 | u32 ttl; | |
207 | u32 desc_info; | |
208 | }; | |
209 | ||
210 | /* | |
211 | * Description information bitdefs | |
212 | */ | |
213 | enum { | |
d3587243 | 214 | CMD_DESC_RES = (1 << 11), |
faf0b2e5 LY |
215 | VENDOR_SPECIFIC_BIST = (1 << 10), |
216 | CMD_DESC_SNOOP_ENABLE = (1 << 9), | |
217 | FPDMA_QUEUED_CMD = (1 << 8), | |
218 | SRST_CMD = (1 << 7), | |
219 | BIST = (1 << 6), | |
220 | ATAPI_CMD = (1 << 5), | |
221 | }; | |
222 | ||
223 | /* | |
224 | * Command Descriptor | |
225 | */ | |
226 | struct command_desc { | |
227 | u8 cfis[8 * 4]; | |
228 | u8 sfis[8 * 4]; | |
229 | u8 acmd[4 * 4]; | |
230 | u8 fill[4 * 4]; | |
231 | u32 prdt[SATA_FSL_MAX_PRD_DIRECT * 4]; | |
232 | u32 prdt_indirect[(SATA_FSL_MAX_PRD - SATA_FSL_MAX_PRD_DIRECT) * 4]; | |
233 | }; | |
234 | ||
235 | /* | |
236 | * Physical region table descriptor(PRD) | |
237 | */ | |
238 | ||
239 | struct prde { | |
240 | u32 dba; | |
241 | u8 fill[2 * 4]; | |
242 | u32 ddc_and_ext; | |
243 | }; | |
244 | ||
245 | /* | |
246 | * ata_port private data | |
247 | * This is our per-port instance data. | |
248 | */ | |
249 | struct sata_fsl_port_priv { | |
250 | struct cmdhdr_tbl_entry *cmdslot; | |
251 | dma_addr_t cmdslot_paddr; | |
252 | struct command_desc *cmdentry; | |
253 | dma_addr_t cmdentry_paddr; | |
faf0b2e5 LY |
254 | }; |
255 | ||
256 | /* | |
257 | * ata_port->host_set private data | |
258 | */ | |
259 | struct sata_fsl_host_priv { | |
260 | void __iomem *hcr_base; | |
261 | void __iomem *ssr_base; | |
262 | void __iomem *csr_base; | |
79b3edc9 | 263 | int irq; |
2f957fc9 | 264 | int data_snoop; |
faf0b2e5 LY |
265 | }; |
266 | ||
267 | static inline unsigned int sata_fsl_tag(unsigned int tag, | |
520d3a1a | 268 | void __iomem *hcr_base) |
faf0b2e5 LY |
269 | { |
270 | /* We let libATA core do actual (queue) tag allocation */ | |
271 | ||
272 | /* all non NCQ/queued commands should have tag#0 */ | |
273 | if (ata_tag_internal(tag)) { | |
274 | DPRINTK("mapping internal cmds to tag#0\n"); | |
275 | return 0; | |
276 | } | |
277 | ||
278 | if (unlikely(tag >= SATA_FSL_QUEUE_DEPTH)) { | |
279 | DPRINTK("tag %d invalid : out of range\n", tag); | |
280 | return 0; | |
281 | } | |
282 | ||
283 | if (unlikely((ioread32(hcr_base + CQ)) & (1 << tag))) { | |
284 | DPRINTK("tag %d invalid : in use!!\n", tag); | |
285 | return 0; | |
286 | } | |
287 | ||
288 | return tag; | |
289 | } | |
290 | ||
291 | static void sata_fsl_setup_cmd_hdr_entry(struct sata_fsl_port_priv *pp, | |
292 | unsigned int tag, u32 desc_info, | |
293 | u32 data_xfer_len, u8 num_prde, | |
294 | u8 fis_len) | |
295 | { | |
296 | dma_addr_t cmd_descriptor_address; | |
297 | ||
298 | cmd_descriptor_address = pp->cmdentry_paddr + | |
299 | tag * SATA_FSL_CMD_DESC_SIZE; | |
300 | ||
301 | /* NOTE: both data_xfer_len & fis_len are Dword counts */ | |
302 | ||
303 | pp->cmdslot[tag].cda = cpu_to_le32(cmd_descriptor_address); | |
304 | pp->cmdslot[tag].prde_fis_len = | |
305 | cpu_to_le32((num_prde << 16) | (fis_len << 2)); | |
306 | pp->cmdslot[tag].ttl = cpu_to_le32(data_xfer_len & ~0x03); | |
520d3a1a | 307 | pp->cmdslot[tag].desc_info = cpu_to_le32(desc_info | (tag & 0x1F)); |
faf0b2e5 LY |
308 | |
309 | VPRINTK("cda=0x%x, prde_fis_len=0x%x, ttl=0x%x, di=0x%x\n", | |
310 | pp->cmdslot[tag].cda, | |
311 | pp->cmdslot[tag].prde_fis_len, | |
312 | pp->cmdslot[tag].ttl, pp->cmdslot[tag].desc_info); | |
313 | ||
314 | } | |
315 | ||
316 | static unsigned int sata_fsl_fill_sg(struct ata_queued_cmd *qc, void *cmd_desc, | |
2f957fc9 X |
317 | u32 *ttl, dma_addr_t cmd_desc_paddr, |
318 | int data_snoop) | |
faf0b2e5 LY |
319 | { |
320 | struct scatterlist *sg; | |
321 | unsigned int num_prde = 0; | |
322 | u32 ttl_dwords = 0; | |
323 | ||
324 | /* | |
af901ca1 | 325 | * NOTE : direct & indirect prdt's are contiguously allocated |
faf0b2e5 LY |
326 | */ |
327 | struct prde *prd = (struct prde *)&((struct command_desc *) | |
328 | cmd_desc)->prdt; | |
329 | ||
330 | struct prde *prd_ptr_to_indirect_ext = NULL; | |
331 | unsigned indirect_ext_segment_sz = 0; | |
332 | dma_addr_t indirect_ext_segment_paddr; | |
ff2aeb1e | 333 | unsigned int si; |
faf0b2e5 | 334 | |
b1f5dc48 | 335 | VPRINTK("SATA FSL : cd = 0x%p, prd = 0x%p\n", cmd_desc, prd); |
faf0b2e5 LY |
336 | |
337 | indirect_ext_segment_paddr = cmd_desc_paddr + | |
338 | SATA_FSL_CMD_DESC_OFFSET_TO_PRDT + SATA_FSL_MAX_PRD_DIRECT * 16; | |
339 | ||
ff2aeb1e | 340 | for_each_sg(qc->sg, sg, qc->n_elem, si) { |
faf0b2e5 LY |
341 | dma_addr_t sg_addr = sg_dma_address(sg); |
342 | u32 sg_len = sg_dma_len(sg); | |
343 | ||
f48c019f KG |
344 | VPRINTK("SATA FSL : fill_sg, sg_addr = 0x%llx, sg_len = %d\n", |
345 | (unsigned long long)sg_addr, sg_len); | |
faf0b2e5 LY |
346 | |
347 | /* warn if each s/g element is not dword aligned */ | |
348 | if (sg_addr & 0x03) | |
349 | ata_port_printk(qc->ap, KERN_ERR, | |
f48c019f KG |
350 | "s/g addr unaligned : 0x%llx\n", |
351 | (unsigned long long)sg_addr); | |
faf0b2e5 LY |
352 | if (sg_len & 0x03) |
353 | ata_port_printk(qc->ap, KERN_ERR, | |
354 | "s/g len unaligned : 0x%x\n", sg_len); | |
355 | ||
37198e30 JB |
356 | if (num_prde == (SATA_FSL_MAX_PRD_DIRECT - 1) && |
357 | sg_next(sg) != NULL) { | |
faf0b2e5 LY |
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; | |
362 | ++prd; | |
363 | ++num_prde; | |
364 | } | |
365 | ||
366 | ttl_dwords += sg_len; | |
367 | prd->dba = cpu_to_le32(sg_addr); | |
2f957fc9 | 368 | prd->ddc_and_ext = cpu_to_le32(data_snoop | (sg_len & ~0x03)); |
faf0b2e5 LY |
369 | |
370 | VPRINTK("sg_fill, ttl=%d, dba=0x%x, ddc=0x%x\n", | |
371 | ttl_dwords, prd->dba, prd->ddc_and_ext); | |
372 | ||
373 | ++num_prde; | |
374 | ++prd; | |
375 | if (prd_ptr_to_indirect_ext) | |
376 | indirect_ext_segment_sz += sg_len; | |
377 | } | |
378 | ||
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 | | |
2f957fc9 | 383 | data_snoop | |
faf0b2e5 LY |
384 | (indirect_ext_segment_sz & ~0x03))); |
385 | } | |
386 | ||
387 | *ttl = ttl_dwords; | |
388 | return num_prde; | |
389 | } | |
390 | ||
391 | static void sata_fsl_qc_prep(struct ata_queued_cmd *qc) | |
392 | { | |
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; | |
d3587243 | 399 | u32 desc_info = CMD_DESC_RES | CMD_DESC_SNOOP_ENABLE; |
faf0b2e5 LY |
400 | u32 num_prde = 0; |
401 | u32 ttl_dwords = 0; | |
402 | dma_addr_t cd_paddr; | |
403 | ||
404 | cd = (struct command_desc *)pp->cmdentry + tag; | |
405 | cd_paddr = pp->cmdentry_paddr + tag * SATA_FSL_CMD_DESC_SIZE; | |
406 | ||
034d8e8f | 407 | ata_tf_to_fis(&qc->tf, qc->dev->link->pmp, 1, (u8 *) &cd->cfis); |
faf0b2e5 LY |
408 | |
409 | VPRINTK("Dumping cfis : 0x%x, 0x%x, 0x%x\n", | |
410 | cd->cfis[0], cd->cfis[1], cd->cfis[2]); | |
411 | ||
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]); | |
415 | } | |
416 | ||
417 | /* setup "ACMD - atapi command" in cmd. desc. if this is ATAPI cmd */ | |
405e66b3 | 418 | if (ata_is_atapi(qc->tf.protocol)) { |
faf0b2e5 LY |
419 | desc_info |= ATAPI_CMD; |
420 | memset((void *)&cd->acmd, 0, 32); | |
421 | memcpy((void *)&cd->acmd, qc->cdb, qc->dev->cdb_len); | |
422 | } | |
423 | ||
424 | if (qc->flags & ATA_QCFLAG_DMAMAP) | |
425 | num_prde = sata_fsl_fill_sg(qc, (void *)cd, | |
2f957fc9 X |
426 | &ttl_dwords, cd_paddr, |
427 | host_priv->data_snoop); | |
faf0b2e5 LY |
428 | |
429 | if (qc->tf.protocol == ATA_PROT_NCQ) | |
430 | desc_info |= FPDMA_QUEUED_CMD; | |
431 | ||
432 | sata_fsl_setup_cmd_hdr_entry(pp, tag, desc_info, ttl_dwords, | |
433 | num_prde, 5); | |
434 | ||
435 | VPRINTK("SATA FSL : xx_qc_prep, di = 0x%x, ttl = %d, num_prde = %d\n", | |
436 | desc_info, ttl_dwords, num_prde); | |
437 | } | |
438 | ||
439 | static unsigned int sata_fsl_qc_issue(struct ata_queued_cmd *qc) | |
440 | { | |
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); | |
445 | ||
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)); | |
450 | ||
034d8e8f AK |
451 | iowrite32(qc->dev->link->pmp, CQPMP + hcr_base); |
452 | ||
faf0b2e5 LY |
453 | /* Simply queue command to the controller/device */ |
454 | iowrite32(1 << tag, CQ + hcr_base); | |
455 | ||
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)); | |
458 | ||
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), | |
b1f5dc48 AV |
462 | ioread32(CC + hcr_base), |
463 | ioread32(COMMANDSTAT + host_priv->csr_base)); | |
faf0b2e5 LY |
464 | |
465 | return 0; | |
466 | } | |
467 | ||
4c9bf4e7 TH |
468 | static bool sata_fsl_qc_fill_rtf(struct ata_queued_cmd *qc) |
469 | { | |
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; | |
475 | ||
476 | cd = pp->cmdentry + tag; | |
477 | ||
478 | ata_tf_from_fis(cd->sfis, &qc->result_tf); | |
479 | return true; | |
480 | } | |
481 | ||
82ef04fb TH |
482 | static int sata_fsl_scr_write(struct ata_link *link, |
483 | unsigned int sc_reg_in, u32 val) | |
faf0b2e5 | 484 | { |
82ef04fb | 485 | struct sata_fsl_host_priv *host_priv = link->ap->host->private_data; |
faf0b2e5 LY |
486 | void __iomem *ssr_base = host_priv->ssr_base; |
487 | unsigned int sc_reg; | |
488 | ||
489 | switch (sc_reg_in) { | |
490 | case SCR_STATUS: | |
faf0b2e5 | 491 | case SCR_ERROR: |
faf0b2e5 | 492 | case SCR_CONTROL: |
faf0b2e5 | 493 | case SCR_ACTIVE: |
9465d532 | 494 | sc_reg = sc_reg_in; |
faf0b2e5 LY |
495 | break; |
496 | default: | |
497 | return -EINVAL; | |
498 | } | |
499 | ||
500 | VPRINTK("xx_scr_write, reg_in = %d\n", sc_reg); | |
501 | ||
2a52e8d4 | 502 | iowrite32(val, ssr_base + (sc_reg * 4)); |
faf0b2e5 LY |
503 | return 0; |
504 | } | |
505 | ||
82ef04fb TH |
506 | static int sata_fsl_scr_read(struct ata_link *link, |
507 | unsigned int sc_reg_in, u32 *val) | |
faf0b2e5 | 508 | { |
82ef04fb | 509 | struct sata_fsl_host_priv *host_priv = link->ap->host->private_data; |
faf0b2e5 LY |
510 | void __iomem *ssr_base = host_priv->ssr_base; |
511 | unsigned int sc_reg; | |
512 | ||
513 | switch (sc_reg_in) { | |
514 | case SCR_STATUS: | |
faf0b2e5 | 515 | case SCR_ERROR: |
faf0b2e5 | 516 | case SCR_CONTROL: |
faf0b2e5 | 517 | case SCR_ACTIVE: |
9465d532 | 518 | sc_reg = sc_reg_in; |
faf0b2e5 LY |
519 | break; |
520 | default: | |
521 | return -EINVAL; | |
522 | } | |
523 | ||
524 | VPRINTK("xx_scr_read, reg_in = %d\n", sc_reg); | |
525 | ||
2a52e8d4 | 526 | *val = ioread32(ssr_base + (sc_reg * 4)); |
faf0b2e5 LY |
527 | return 0; |
528 | } | |
529 | ||
530 | static void sata_fsl_freeze(struct ata_port *ap) | |
531 | { | |
532 | struct sata_fsl_host_priv *host_priv = ap->host->private_data; | |
533 | void __iomem *hcr_base = host_priv->hcr_base; | |
534 | u32 temp; | |
535 | ||
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)); | |
b1f5dc48 AV |
540 | VPRINTK("CmdStat = 0x%x\n", |
541 | ioread32(host_priv->csr_base + COMMANDSTAT)); | |
faf0b2e5 LY |
542 | |
543 | /* disable interrupts on the controller/port */ | |
544 | temp = ioread32(hcr_base + HCONTROL); | |
545 | iowrite32((temp & ~0x3F), hcr_base + HCONTROL); | |
546 | ||
547 | VPRINTK("in xx_freeze : HControl = 0x%x, HStatus = 0x%x\n", | |
548 | ioread32(hcr_base + HCONTROL), ioread32(hcr_base + HSTATUS)); | |
549 | } | |
550 | ||
551 | static void sata_fsl_thaw(struct ata_port *ap) | |
552 | { | |
553 | struct sata_fsl_host_priv *host_priv = ap->host->private_data; | |
554 | void __iomem *hcr_base = host_priv->hcr_base; | |
555 | u32 temp; | |
556 | ||
557 | /* ack. any pending IRQs for this controller/port */ | |
558 | temp = ioread32(hcr_base + HSTATUS); | |
559 | ||
560 | VPRINTK("xx_thaw, pending IRQs = 0x%x\n", (temp & 0x3F)); | |
561 | ||
562 | if (temp & 0x3F) | |
563 | iowrite32((temp & 0x3F), hcr_base + HSTATUS); | |
564 | ||
565 | /* enable interrupts on the controller/port */ | |
566 | temp = ioread32(hcr_base + HCONTROL); | |
567 | iowrite32((temp | DEFAULT_PORT_IRQ_ENABLE_MASK), hcr_base + HCONTROL); | |
568 | ||
569 | VPRINTK("xx_thaw : HControl = 0x%x, HStatus = 0x%x\n", | |
570 | ioread32(hcr_base + HCONTROL), ioread32(hcr_base + HSTATUS)); | |
571 | } | |
572 | ||
034d8e8f AK |
573 | static void sata_fsl_pmp_attach(struct ata_port *ap) |
574 | { | |
575 | struct sata_fsl_host_priv *host_priv = ap->host->private_data; | |
576 | void __iomem *hcr_base = host_priv->hcr_base; | |
577 | u32 temp; | |
578 | ||
579 | temp = ioread32(hcr_base + HCONTROL); | |
580 | iowrite32((temp | HCONTROL_PMP_ATTACHED), hcr_base + HCONTROL); | |
581 | } | |
582 | ||
583 | static void sata_fsl_pmp_detach(struct ata_port *ap) | |
584 | { | |
585 | struct sata_fsl_host_priv *host_priv = ap->host->private_data; | |
586 | void __iomem *hcr_base = host_priv->hcr_base; | |
587 | u32 temp; | |
588 | ||
589 | temp = ioread32(hcr_base + HCONTROL); | |
590 | temp &= ~HCONTROL_PMP_ATTACHED; | |
591 | iowrite32(temp, hcr_base + HCONTROL); | |
592 | ||
593 | /* enable interrupts on the controller/port */ | |
594 | temp = ioread32(hcr_base + HCONTROL); | |
595 | iowrite32((temp | DEFAULT_PORT_IRQ_ENABLE_MASK), hcr_base + HCONTROL); | |
596 | ||
597 | } | |
598 | ||
faf0b2e5 LY |
599 | static int sata_fsl_port_start(struct ata_port *ap) |
600 | { | |
601 | struct device *dev = ap->host->dev; | |
602 | struct sata_fsl_port_priv *pp; | |
faf0b2e5 LY |
603 | void *mem; |
604 | dma_addr_t mem_dma; | |
605 | struct sata_fsl_host_priv *host_priv = ap->host->private_data; | |
606 | void __iomem *hcr_base = host_priv->hcr_base; | |
607 | u32 temp; | |
608 | ||
609 | pp = kzalloc(sizeof(*pp), GFP_KERNEL); | |
610 | if (!pp) | |
611 | return -ENOMEM; | |
612 | ||
faf0b2e5 LY |
613 | mem = dma_alloc_coherent(dev, SATA_FSL_PORT_PRIV_DMA_SZ, &mem_dma, |
614 | GFP_KERNEL); | |
615 | if (!mem) { | |
faf0b2e5 LY |
616 | kfree(pp); |
617 | return -ENOMEM; | |
618 | } | |
619 | memset(mem, 0, SATA_FSL_PORT_PRIV_DMA_SZ); | |
620 | ||
621 | pp->cmdslot = mem; | |
622 | pp->cmdslot_paddr = mem_dma; | |
623 | ||
624 | mem += SATA_FSL_CMD_SLOT_SIZE; | |
625 | mem_dma += SATA_FSL_CMD_SLOT_SIZE; | |
626 | ||
627 | pp->cmdentry = mem; | |
628 | pp->cmdentry_paddr = mem_dma; | |
629 | ||
630 | ap->private_data = pp; | |
631 | ||
632 | VPRINTK("CHBA = 0x%x, cmdentry_phys = 0x%x\n", | |
633 | pp->cmdslot_paddr, pp->cmdentry_paddr); | |
634 | ||
635 | /* Now, update the CHBA register in host controller cmd register set */ | |
636 | iowrite32(pp->cmdslot_paddr & 0xffffffff, hcr_base + CHBA); | |
637 | ||
638 | /* | |
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. | |
644 | */ | |
645 | ||
646 | temp = ioread32(hcr_base + HCONTROL); | |
647 | iowrite32((temp | HCONTROL_ONLINE_PHY_RST), hcr_base + HCONTROL); | |
648 | ||
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)); | |
652 | ||
e7eac96e | 653 | #ifdef CONFIG_MPC8315_DS |
faf0b2e5 LY |
654 | /* |
655 | * Workaround for 8315DS board 3gbps link-up issue, | |
656 | * currently limit SATA port to GEN1 speed | |
657 | */ | |
82ef04fb | 658 | sata_fsl_scr_read(&ap->link, SCR_CONTROL, &temp); |
faf0b2e5 LY |
659 | temp &= ~(0xF << 4); |
660 | temp |= (0x1 << 4); | |
82ef04fb | 661 | sata_fsl_scr_write(&ap->link, SCR_CONTROL, temp); |
faf0b2e5 | 662 | |
82ef04fb | 663 | sata_fsl_scr_read(&ap->link, SCR_CONTROL, &temp); |
a44fec1f | 664 | dev_warn(dev, "scr_control, speed limited to %x\n", temp); |
e7eac96e | 665 | #endif |
faf0b2e5 LY |
666 | |
667 | return 0; | |
668 | } | |
669 | ||
670 | static void sata_fsl_port_stop(struct ata_port *ap) | |
671 | { | |
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; | |
676 | u32 temp; | |
677 | ||
678 | /* | |
679 | * Force host controller to go off-line, aborting current operations | |
680 | */ | |
681 | temp = ioread32(hcr_base + HCONTROL); | |
682 | temp &= ~HCONTROL_ONLINE_PHY_RST; | |
683 | temp |= HCONTROL_FORCE_OFFLINE; | |
684 | iowrite32(temp, hcr_base + HCONTROL); | |
685 | ||
686 | /* Poll for controller to go offline - should happen immediately */ | |
97750ceb | 687 | ata_wait_register(ap, hcr_base + HSTATUS, ONLINE, ONLINE, 1, 1); |
faf0b2e5 LY |
688 | |
689 | ap->private_data = NULL; | |
690 | dma_free_coherent(dev, SATA_FSL_PORT_PRIV_DMA_SZ, | |
691 | pp->cmdslot, pp->cmdslot_paddr); | |
692 | ||
faf0b2e5 LY |
693 | kfree(pp); |
694 | } | |
695 | ||
696 | static unsigned int sata_fsl_dev_classify(struct ata_port *ap) | |
697 | { | |
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; | |
701 | u32 temp; | |
702 | ||
703 | temp = ioread32(hcr_base + SIGNATURE); | |
704 | ||
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)); | |
708 | ||
709 | tf.lbah = (temp >> 24) & 0xff; | |
710 | tf.lbam = (temp >> 16) & 0xff; | |
711 | tf.lbal = (temp >> 8) & 0xff; | |
712 | tf.nsect = temp & 0xff; | |
713 | ||
714 | return ata_dev_classify(&tf); | |
715 | } | |
716 | ||
a0a74d1e | 717 | static int sata_fsl_hardreset(struct ata_link *link, unsigned int *class, |
034d8e8f | 718 | unsigned long deadline) |
faf0b2e5 | 719 | { |
1bf617b7 | 720 | struct ata_port *ap = link->ap; |
faf0b2e5 LY |
721 | struct sata_fsl_host_priv *host_priv = ap->host->private_data; |
722 | void __iomem *hcr_base = host_priv->hcr_base; | |
723 | u32 temp; | |
faf0b2e5 | 724 | int i = 0; |
faf0b2e5 LY |
725 | unsigned long start_jiffies; |
726 | ||
a0a74d1e | 727 | DPRINTK("in xx_hardreset\n"); |
034d8e8f | 728 | |
faf0b2e5 LY |
729 | try_offline_again: |
730 | /* | |
731 | * Force host controller to go off-line, aborting current operations | |
732 | */ | |
733 | temp = ioread32(hcr_base + HCONTROL); | |
734 | temp &= ~HCONTROL_ONLINE_PHY_RST; | |
735 | iowrite32(temp, hcr_base + HCONTROL); | |
736 | ||
737 | /* Poll for controller to go offline */ | |
97750ceb TH |
738 | temp = ata_wait_register(ap, hcr_base + HSTATUS, ONLINE, ONLINE, |
739 | 1, 500); | |
faf0b2e5 LY |
740 | |
741 | if (temp & ONLINE) { | |
742 | ata_port_printk(ap, KERN_ERR, | |
a0a74d1e | 743 | "Hardreset failed, not off-lined %d\n", i); |
faf0b2e5 LY |
744 | |
745 | /* | |
746 | * Try to offline controller atleast twice | |
747 | */ | |
748 | i++; | |
749 | if (i == 2) | |
750 | goto err; | |
751 | else | |
752 | goto try_offline_again; | |
753 | } | |
754 | ||
a0a74d1e | 755 | DPRINTK("hardreset, controller off-lined\n"); |
faf0b2e5 LY |
756 | VPRINTK("HStatus = 0x%x\n", ioread32(hcr_base + HSTATUS)); |
757 | VPRINTK("HControl = 0x%x\n", ioread32(hcr_base + HCONTROL)); | |
758 | ||
759 | /* | |
760 | * PHY reset should remain asserted for atleast 1ms | |
761 | */ | |
97750ceb | 762 | ata_msleep(ap, 1); |
faf0b2e5 LY |
763 | |
764 | /* | |
765 | * Now, bring the host controller online again, this can take time | |
766 | * as PHY reset and communication establishment, 1st D2H FIS and | |
767 | * device signature update is done, on safe side assume 500ms | |
768 | * NOTE : Host online status may be indicated immediately!! | |
769 | */ | |
770 | ||
771 | temp = ioread32(hcr_base + HCONTROL); | |
772 | temp |= (HCONTROL_ONLINE_PHY_RST | HCONTROL_SNOOP_ENABLE); | |
034d8e8f | 773 | temp |= HCONTROL_PMP_ATTACHED; |
faf0b2e5 LY |
774 | iowrite32(temp, hcr_base + HCONTROL); |
775 | ||
97750ceb | 776 | temp = ata_wait_register(ap, hcr_base + HSTATUS, ONLINE, 0, 1, 500); |
faf0b2e5 LY |
777 | |
778 | if (!(temp & ONLINE)) { | |
779 | ata_port_printk(ap, KERN_ERR, | |
a0a74d1e | 780 | "Hardreset failed, not on-lined\n"); |
faf0b2e5 LY |
781 | goto err; |
782 | } | |
783 | ||
a0a74d1e | 784 | DPRINTK("hardreset, controller off-lined & on-lined\n"); |
faf0b2e5 LY |
785 | VPRINTK("HStatus = 0x%x\n", ioread32(hcr_base + HSTATUS)); |
786 | VPRINTK("HControl = 0x%x\n", ioread32(hcr_base + HCONTROL)); | |
787 | ||
788 | /* | |
789 | * First, wait for the PHYRDY change to occur before waiting for | |
790 | * the signature, and also verify if SStatus indicates device | |
791 | * presence | |
792 | */ | |
793 | ||
97750ceb | 794 | temp = ata_wait_register(ap, hcr_base + HSTATUS, 0xFF, 0, 1, 500); |
1bf617b7 | 795 | if ((!(temp & 0x10)) || ata_link_offline(link)) { |
faf0b2e5 LY |
796 | ata_port_printk(ap, KERN_WARNING, |
797 | "No Device OR PHYRDY change,Hstatus = 0x%x\n", | |
798 | ioread32(hcr_base + HSTATUS)); | |
034d8e8f | 799 | *class = ATA_DEV_NONE; |
a0a74d1e | 800 | return 0; |
faf0b2e5 LY |
801 | } |
802 | ||
803 | /* | |
804 | * Wait for the first D2H from device,i.e,signature update notification | |
805 | */ | |
806 | start_jiffies = jiffies; | |
97750ceb | 807 | temp = ata_wait_register(ap, hcr_base + HSTATUS, 0xFF, 0x10, |
faf0b2e5 LY |
808 | 500, jiffies_to_msecs(deadline - start_jiffies)); |
809 | ||
810 | if ((temp & 0xFF) != 0x18) { | |
811 | ata_port_printk(ap, KERN_WARNING, "No Signature Update\n"); | |
034d8e8f | 812 | *class = ATA_DEV_NONE; |
a0a74d1e | 813 | goto do_followup_srst; |
faf0b2e5 LY |
814 | } else { |
815 | ata_port_printk(ap, KERN_INFO, | |
816 | "Signature Update detected @ %d msecs\n", | |
817 | jiffies_to_msecs(jiffies - start_jiffies)); | |
a0a74d1e JY |
818 | *class = sata_fsl_dev_classify(ap); |
819 | return 0; | |
820 | } | |
821 | ||
822 | do_followup_srst: | |
823 | /* | |
824 | * request libATA to perform follow-up softreset | |
825 | */ | |
826 | return -EAGAIN; | |
827 | ||
828 | err: | |
829 | return -EIO; | |
830 | } | |
831 | ||
832 | static int sata_fsl_softreset(struct ata_link *link, unsigned int *class, | |
833 | unsigned long deadline) | |
834 | { | |
835 | struct ata_port *ap = link->ap; | |
836 | struct sata_fsl_port_priv *pp = ap->private_data; | |
837 | struct sata_fsl_host_priv *host_priv = ap->host->private_data; | |
838 | void __iomem *hcr_base = host_priv->hcr_base; | |
839 | int pmp = sata_srst_pmp(link); | |
840 | u32 temp; | |
841 | struct ata_taskfile tf; | |
842 | u8 *cfis; | |
843 | u32 Serror; | |
844 | ||
845 | DPRINTK("in xx_softreset\n"); | |
846 | ||
847 | if (ata_link_offline(link)) { | |
848 | DPRINTK("PHY reports no device\n"); | |
849 | *class = ATA_DEV_NONE; | |
850 | return 0; | |
faf0b2e5 LY |
851 | } |
852 | ||
853 | /* | |
854 | * Send a device reset (SRST) explicitly on command slot #0 | |
855 | * Check : will the command queue (reg) be cleared during offlining ?? | |
856 | * Also we will be online only if Phy commn. has been established | |
857 | * and device presence has been detected, therefore if we have | |
858 | * reached here, we can send a command to the target device | |
859 | */ | |
860 | ||
faf0b2e5 LY |
861 | DPRINTK("Sending SRST/device reset\n"); |
862 | ||
1bf617b7 | 863 | ata_tf_init(link->device, &tf); |
520d3a1a | 864 | cfis = (u8 *) &pp->cmdentry->cfis; |
faf0b2e5 LY |
865 | |
866 | /* device reset/SRST is a control register update FIS, uses tag0 */ | |
867 | sata_fsl_setup_cmd_hdr_entry(pp, 0, | |
d3587243 | 868 | SRST_CMD | CMD_DESC_RES | CMD_DESC_SNOOP_ENABLE, 0, 0, 5); |
faf0b2e5 LY |
869 | |
870 | tf.ctl |= ATA_SRST; /* setup SRST bit in taskfile control reg */ | |
034d8e8f | 871 | ata_tf_to_fis(&tf, pmp, 0, cfis); |
faf0b2e5 LY |
872 | |
873 | DPRINTK("Dumping cfis : 0x%x, 0x%x, 0x%x, 0x%x\n", | |
874 | cfis[0], cfis[1], cfis[2], cfis[3]); | |
875 | ||
876 | /* | |
877 | * Queue SRST command to the controller/device, ensure that no | |
878 | * other commands are active on the controller/device | |
879 | */ | |
880 | ||
881 | DPRINTK("@Softreset, CQ = 0x%x, CA = 0x%x, CC = 0x%x\n", | |
882 | ioread32(CQ + hcr_base), | |
883 | ioread32(CA + hcr_base), ioread32(CC + hcr_base)); | |
884 | ||
885 | iowrite32(0xFFFF, CC + hcr_base); | |
a0a74d1e JY |
886 | if (pmp != SATA_PMP_CTRL_PORT) |
887 | iowrite32(pmp, CQPMP + hcr_base); | |
faf0b2e5 LY |
888 | iowrite32(1, CQ + hcr_base); |
889 | ||
97750ceb | 890 | temp = ata_wait_register(ap, CQ + hcr_base, 0x1, 0x1, 1, 5000); |
faf0b2e5 LY |
891 | if (temp & 0x1) { |
892 | ata_port_printk(ap, KERN_WARNING, "ATA_SRST issue failed\n"); | |
893 | ||
894 | DPRINTK("Softreset@5000,CQ=0x%x,CA=0x%x,CC=0x%x\n", | |
895 | ioread32(CQ + hcr_base), | |
896 | ioread32(CA + hcr_base), ioread32(CC + hcr_base)); | |
897 | ||
82ef04fb | 898 | sata_fsl_scr_read(&ap->link, SCR_ERROR, &Serror); |
faf0b2e5 LY |
899 | |
900 | DPRINTK("HStatus = 0x%x\n", ioread32(hcr_base + HSTATUS)); | |
901 | DPRINTK("HControl = 0x%x\n", ioread32(hcr_base + HCONTROL)); | |
902 | DPRINTK("Serror = 0x%x\n", Serror); | |
903 | goto err; | |
904 | } | |
905 | ||
97750ceb | 906 | ata_msleep(ap, 1); |
faf0b2e5 LY |
907 | |
908 | /* | |
25985edc | 909 | * SATA device enters reset state after receiving a Control register |
faf0b2e5 LY |
910 | * FIS with SRST bit asserted and it awaits another H2D Control reg. |
911 | * FIS with SRST bit cleared, then the device does internal diags & | |
912 | * initialization, followed by indicating it's initialization status | |
913 | * using ATA signature D2H register FIS to the host controller. | |
914 | */ | |
915 | ||
d3587243 DL |
916 | sata_fsl_setup_cmd_hdr_entry(pp, 0, CMD_DESC_RES | CMD_DESC_SNOOP_ENABLE, |
917 | 0, 0, 5); | |
faf0b2e5 LY |
918 | |
919 | tf.ctl &= ~ATA_SRST; /* 2nd H2D Ctl. register FIS */ | |
034d8e8f | 920 | ata_tf_to_fis(&tf, pmp, 0, cfis); |
faf0b2e5 | 921 | |
034d8e8f AK |
922 | if (pmp != SATA_PMP_CTRL_PORT) |
923 | iowrite32(pmp, CQPMP + hcr_base); | |
faf0b2e5 | 924 | iowrite32(1, CQ + hcr_base); |
97750ceb | 925 | ata_msleep(ap, 150); /* ?? */ |
faf0b2e5 LY |
926 | |
927 | /* | |
928 | * The above command would have signalled an interrupt on command | |
929 | * complete, which needs special handling, by clearing the Nth | |
930 | * command bit of the CCreg | |
931 | */ | |
932 | iowrite32(0x01, CC + hcr_base); /* We know it will be cmd#0 always */ | |
faf0b2e5 LY |
933 | |
934 | DPRINTK("SATA FSL : Now checking device signature\n"); | |
935 | ||
936 | *class = ATA_DEV_NONE; | |
937 | ||
938 | /* Verify if SStatus indicates device presence */ | |
1bf617b7 | 939 | if (ata_link_online(link)) { |
faf0b2e5 LY |
940 | /* |
941 | * if we are here, device presence has been detected, | |
942 | * 1st D2H FIS would have been received, but sfis in | |
943 | * command desc. is not updated, but signature register | |
944 | * would have been updated | |
945 | */ | |
946 | ||
947 | *class = sata_fsl_dev_classify(ap); | |
948 | ||
949 | DPRINTK("class = %d\n", *class); | |
950 | VPRINTK("ccreg = 0x%x\n", ioread32(hcr_base + CC)); | |
951 | VPRINTK("cereg = 0x%x\n", ioread32(hcr_base + CE)); | |
952 | } | |
953 | ||
954 | return 0; | |
955 | ||
956 | err: | |
957 | return -EIO; | |
958 | } | |
959 | ||
034d8e8f AK |
960 | static void sata_fsl_error_handler(struct ata_port *ap) |
961 | { | |
962 | ||
963 | DPRINTK("in xx_error_handler\n"); | |
964 | sata_pmp_error_handler(ap); | |
965 | ||
966 | } | |
967 | ||
faf0b2e5 LY |
968 | static void sata_fsl_post_internal_cmd(struct ata_queued_cmd *qc) |
969 | { | |
970 | if (qc->flags & ATA_QCFLAG_FAILED) | |
971 | qc->err_mask |= AC_ERR_OTHER; | |
972 | ||
973 | if (qc->err_mask) { | |
974 | /* make DMA engine forget about the failed command */ | |
975 | ||
976 | } | |
977 | } | |
978 | ||
faf0b2e5 LY |
979 | static void sata_fsl_error_intr(struct ata_port *ap) |
980 | { | |
faf0b2e5 LY |
981 | struct sata_fsl_host_priv *host_priv = ap->host->private_data; |
982 | void __iomem *hcr_base = host_priv->hcr_base; | |
034d8e8f | 983 | u32 hstatus, dereg=0, cereg = 0, SError = 0; |
faf0b2e5 | 984 | unsigned int err_mask = 0, action = 0; |
034d8e8f AK |
985 | int freeze = 0, abort=0; |
986 | struct ata_link *link = NULL; | |
987 | struct ata_queued_cmd *qc = NULL; | |
988 | struct ata_eh_info *ehi; | |
faf0b2e5 LY |
989 | |
990 | hstatus = ioread32(hcr_base + HSTATUS); | |
991 | cereg = ioread32(hcr_base + CE); | |
992 | ||
034d8e8f AK |
993 | /* first, analyze and record host port events */ |
994 | link = &ap->link; | |
995 | ehi = &link->eh_info; | |
faf0b2e5 LY |
996 | ata_ehi_clear_desc(ehi); |
997 | ||
998 | /* | |
999 | * Handle & Clear SError | |
1000 | */ | |
1001 | ||
82ef04fb | 1002 | sata_fsl_scr_read(&ap->link, SCR_ERROR, &SError); |
fd6c29e3 | 1003 | if (unlikely(SError & 0xFFFF0000)) |
82ef04fb | 1004 | sata_fsl_scr_write(&ap->link, SCR_ERROR, SError); |
faf0b2e5 LY |
1005 | |
1006 | DPRINTK("error_intr,hStat=0x%x,CE=0x%x,DE =0x%x,SErr=0x%x\n", | |
1007 | hstatus, cereg, ioread32(hcr_base + DE), SError); | |
1008 | ||
034d8e8f AK |
1009 | /* handle fatal errors */ |
1010 | if (hstatus & FATAL_ERROR_DECODE) { | |
1011 | ehi->err_mask |= AC_ERR_ATA_BUS; | |
1012 | ehi->action |= ATA_EH_SOFTRESET; | |
faf0b2e5 | 1013 | |
faf0b2e5 LY |
1014 | freeze = 1; |
1015 | } | |
1016 | ||
fd6c29e3 | 1017 | /* Handle SDB FIS receive & notify update */ |
1018 | if (hstatus & INT_ON_SNOTIFY_UPDATE) | |
1019 | sata_async_notification(ap); | |
1020 | ||
faf0b2e5 LY |
1021 | /* Handle PHYRDY change notification */ |
1022 | if (hstatus & INT_ON_PHYRDY_CHG) { | |
1023 | DPRINTK("SATA FSL: PHYRDY change indication\n"); | |
1024 | ||
1025 | /* Setup a soft-reset EH action */ | |
1026 | ata_ehi_hotplugged(ehi); | |
034d8e8f | 1027 | ata_ehi_push_desc(ehi, "%s", "PHY RDY changed"); |
faf0b2e5 LY |
1028 | freeze = 1; |
1029 | } | |
1030 | ||
034d8e8f AK |
1031 | /* handle single device errors */ |
1032 | if (cereg) { | |
1033 | /* | |
1034 | * clear the command error, also clears queue to the device | |
1035 | * in error, and we can (re)issue commands to this device. | |
1036 | * When a device is in error all commands queued into the | |
1037 | * host controller and at the device are considered aborted | |
1038 | * and the queue for that device is stopped. Now, after | |
1039 | * clearing the device error, we can issue commands to the | |
1040 | * device to interrogate it to find the source of the error. | |
1041 | */ | |
1042 | abort = 1; | |
1043 | ||
1044 | DPRINTK("single device error, CE=0x%x, DE=0x%x\n", | |
1045 | ioread32(hcr_base + CE), ioread32(hcr_base + DE)); | |
faf0b2e5 | 1046 | |
034d8e8f AK |
1047 | /* find out the offending link and qc */ |
1048 | if (ap->nr_pmp_links) { | |
4ac7534a PK |
1049 | unsigned int dev_num; |
1050 | ||
034d8e8f AK |
1051 | dereg = ioread32(hcr_base + DE); |
1052 | iowrite32(dereg, hcr_base + DE); | |
1053 | iowrite32(cereg, hcr_base + CE); | |
1054 | ||
4ac7534a PK |
1055 | dev_num = ffs(dereg) - 1; |
1056 | if (dev_num < ap->nr_pmp_links && dereg != 0) { | |
1057 | link = &ap->pmp_link[dev_num]; | |
034d8e8f AK |
1058 | ehi = &link->eh_info; |
1059 | qc = ata_qc_from_tag(ap, link->active_tag); | |
1060 | /* | |
1061 | * We should consider this as non fatal error, | |
1062 | * and TF must be updated as done below. | |
1063 | */ | |
1064 | ||
1065 | err_mask |= AC_ERR_DEV; | |
1066 | ||
1067 | } else { | |
1068 | err_mask |= AC_ERR_HSM; | |
1069 | action |= ATA_EH_HARDRESET; | |
1070 | freeze = 1; | |
1071 | } | |
1072 | } else { | |
1073 | dereg = ioread32(hcr_base + DE); | |
1074 | iowrite32(dereg, hcr_base + DE); | |
1075 | iowrite32(cereg, hcr_base + CE); | |
1076 | ||
1077 | qc = ata_qc_from_tag(ap, link->active_tag); | |
1078 | /* | |
1079 | * We should consider this as non fatal error, | |
1080 | * and TF must be updated as done below. | |
1081 | */ | |
1082 | err_mask |= AC_ERR_DEV; | |
1083 | } | |
1084 | } | |
1085 | ||
1086 | /* record error info */ | |
fd6c29e3 | 1087 | if (qc) |
faf0b2e5 | 1088 | qc->err_mask |= err_mask; |
fd6c29e3 | 1089 | else |
faf0b2e5 LY |
1090 | ehi->err_mask |= err_mask; |
1091 | ||
1092 | ehi->action |= action; | |
faf0b2e5 LY |
1093 | |
1094 | /* freeze or abort */ | |
1095 | if (freeze) | |
1096 | ata_port_freeze(ap); | |
034d8e8f AK |
1097 | else if (abort) { |
1098 | if (qc) | |
1099 | ata_link_abort(qc->dev->link); | |
1100 | else | |
1101 | ata_port_abort(ap); | |
1102 | } | |
faf0b2e5 LY |
1103 | } |
1104 | ||
faf0b2e5 LY |
1105 | static void sata_fsl_host_intr(struct ata_port *ap) |
1106 | { | |
1107 | struct sata_fsl_host_priv *host_priv = ap->host->private_data; | |
1108 | void __iomem *hcr_base = host_priv->hcr_base; | |
752e386c | 1109 | u32 hstatus, done_mask = 0; |
faf0b2e5 LY |
1110 | struct ata_queued_cmd *qc; |
1111 | u32 SError; | |
1112 | ||
1113 | hstatus = ioread32(hcr_base + HSTATUS); | |
1114 | ||
82ef04fb | 1115 | sata_fsl_scr_read(&ap->link, SCR_ERROR, &SError); |
faf0b2e5 LY |
1116 | |
1117 | if (unlikely(SError & 0xFFFF0000)) { | |
1118 | DPRINTK("serror @host_intr : 0x%x\n", SError); | |
1119 | sata_fsl_error_intr(ap); | |
faf0b2e5 LY |
1120 | } |
1121 | ||
1122 | if (unlikely(hstatus & INT_ON_ERROR)) { | |
1123 | DPRINTK("error interrupt!!\n"); | |
1124 | sata_fsl_error_intr(ap); | |
1125 | return; | |
1126 | } | |
1127 | ||
034d8e8f | 1128 | /* Read command completed register */ |
752e386c | 1129 | done_mask = ioread32(hcr_base + CC); |
034d8e8f AK |
1130 | |
1131 | VPRINTK("Status of all queues :\n"); | |
752e386c TH |
1132 | VPRINTK("done_mask/CC = 0x%x, CA = 0x%x, CE=0x%x,CQ=0x%x,apqa=0x%x\n", |
1133 | done_mask, | |
034d8e8f AK |
1134 | ioread32(hcr_base + CA), |
1135 | ioread32(hcr_base + CE), | |
1136 | ioread32(hcr_base + CQ), | |
1137 | ap->qc_active); | |
1138 | ||
752e386c | 1139 | if (done_mask & ap->qc_active) { |
faf0b2e5 | 1140 | int i; |
faf0b2e5 | 1141 | /* clear CC bit, this will also complete the interrupt */ |
752e386c | 1142 | iowrite32(done_mask, hcr_base + CC); |
faf0b2e5 LY |
1143 | |
1144 | DPRINTK("Status of all queues :\n"); | |
752e386c TH |
1145 | DPRINTK("done_mask/CC = 0x%x, CA = 0x%x, CE=0x%x\n", |
1146 | done_mask, ioread32(hcr_base + CA), | |
faf0b2e5 LY |
1147 | ioread32(hcr_base + CE)); |
1148 | ||
1149 | for (i = 0; i < SATA_FSL_QUEUE_DEPTH; i++) { | |
1aadf5c3 | 1150 | if (done_mask & (1 << i)) |
faf0b2e5 LY |
1151 | DPRINTK |
1152 | ("completing ncq cmd,tag=%d,CC=0x%x,CA=0x%x\n", | |
1153 | i, ioread32(hcr_base + CC), | |
1154 | ioread32(hcr_base + CA)); | |
faf0b2e5 | 1155 | } |
1aadf5c3 | 1156 | ata_qc_complete_multiple(ap, ap->qc_active ^ done_mask); |
faf0b2e5 LY |
1157 | return; |
1158 | ||
034d8e8f | 1159 | } else if ((ap->qc_active & (1 << ATA_TAG_INTERNAL))) { |
faf0b2e5 | 1160 | iowrite32(1, hcr_base + CC); |
034d8e8f | 1161 | qc = ata_qc_from_tag(ap, ATA_TAG_INTERNAL); |
faf0b2e5 | 1162 | |
034d8e8f AK |
1163 | DPRINTK("completing non-ncq cmd, CC=0x%x\n", |
1164 | ioread32(hcr_base + CC)); | |
faf0b2e5 | 1165 | |
034d8e8f | 1166 | if (qc) { |
faf0b2e5 | 1167 | ata_qc_complete(qc); |
034d8e8f | 1168 | } |
faf0b2e5 LY |
1169 | } else { |
1170 | /* Spurious Interrupt!! */ | |
1171 | DPRINTK("spurious interrupt!!, CC = 0x%x\n", | |
1172 | ioread32(hcr_base + CC)); | |
752e386c | 1173 | iowrite32(done_mask, hcr_base + CC); |
faf0b2e5 LY |
1174 | return; |
1175 | } | |
1176 | } | |
1177 | ||
1178 | static irqreturn_t sata_fsl_interrupt(int irq, void *dev_instance) | |
1179 | { | |
1180 | struct ata_host *host = dev_instance; | |
1181 | struct sata_fsl_host_priv *host_priv = host->private_data; | |
1182 | void __iomem *hcr_base = host_priv->hcr_base; | |
1183 | u32 interrupt_enables; | |
1184 | unsigned handled = 0; | |
1185 | struct ata_port *ap; | |
1186 | ||
1187 | /* ack. any pending IRQs for this controller/port */ | |
1188 | interrupt_enables = ioread32(hcr_base + HSTATUS); | |
1189 | interrupt_enables &= 0x3F; | |
1190 | ||
1191 | DPRINTK("interrupt status 0x%x\n", interrupt_enables); | |
1192 | ||
1193 | if (!interrupt_enables) | |
1194 | return IRQ_NONE; | |
1195 | ||
1196 | spin_lock(&host->lock); | |
1197 | ||
1198 | /* Assuming one port per host controller */ | |
1199 | ||
1200 | ap = host->ports[0]; | |
1201 | if (ap) { | |
1202 | sata_fsl_host_intr(ap); | |
1203 | } else { | |
a44fec1f | 1204 | dev_warn(host->dev, "interrupt on disabled port 0\n"); |
faf0b2e5 LY |
1205 | } |
1206 | ||
1207 | iowrite32(interrupt_enables, hcr_base + HSTATUS); | |
1208 | handled = 1; | |
1209 | ||
1210 | spin_unlock(&host->lock); | |
1211 | ||
1212 | return IRQ_RETVAL(handled); | |
1213 | } | |
1214 | ||
1215 | /* | |
1216 | * Multiple ports are represented by multiple SATA controllers with | |
1217 | * one port per controller | |
1218 | */ | |
1219 | static int sata_fsl_init_controller(struct ata_host *host) | |
1220 | { | |
1221 | struct sata_fsl_host_priv *host_priv = host->private_data; | |
1222 | void __iomem *hcr_base = host_priv->hcr_base; | |
1223 | u32 temp; | |
1224 | ||
1225 | /* | |
1226 | * NOTE : We cannot bring the controller online before setting | |
1227 | * the CHBA, hence main controller initialization is done as | |
1228 | * part of the port_start() callback | |
1229 | */ | |
1230 | ||
1231 | /* ack. any pending IRQs for this controller/port */ | |
1232 | temp = ioread32(hcr_base + HSTATUS); | |
1233 | if (temp & 0x3F) | |
1234 | iowrite32((temp & 0x3F), hcr_base + HSTATUS); | |
1235 | ||
1236 | /* Keep interrupts disabled on the controller */ | |
1237 | temp = ioread32(hcr_base + HCONTROL); | |
1238 | iowrite32((temp & ~0x3F), hcr_base + HCONTROL); | |
1239 | ||
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); | |
1243 | ||
1244 | /* clear error registers, SError is cleared by libATA */ | |
1245 | iowrite32(0x00000FFFF, hcr_base + CE); | |
1246 | iowrite32(0x00000FFFF, hcr_base + DE); | |
1247 | ||
faf0b2e5 LY |
1248 | /* |
1249 | * host controller will be brought on-line, during xx_port_start() | |
1250 | * callback, that should also initiate the OOB, COMINIT sequence | |
1251 | */ | |
1252 | ||
1253 | DPRINTK("HStatus = 0x%x\n", ioread32(hcr_base + HSTATUS)); | |
1254 | DPRINTK("HControl = 0x%x\n", ioread32(hcr_base + HCONTROL)); | |
1255 | ||
1256 | return 0; | |
1257 | } | |
1258 | ||
1259 | /* | |
1260 | * scsi mid-layer and libata interface structures | |
1261 | */ | |
1262 | static struct scsi_host_template sata_fsl_sht = { | |
68d1d07b | 1263 | ATA_NCQ_SHT("sata_fsl"), |
faf0b2e5 | 1264 | .can_queue = SATA_FSL_QUEUE_DEPTH, |
faf0b2e5 | 1265 | .sg_tablesize = SATA_FSL_MAX_PRD_USABLE, |
faf0b2e5 | 1266 | .dma_boundary = ATA_DMA_BOUNDARY, |
faf0b2e5 LY |
1267 | }; |
1268 | ||
034d8e8f AK |
1269 | static struct ata_port_operations sata_fsl_ops = { |
1270 | .inherits = &sata_pmp_port_ops, | |
029cfd6b | 1271 | |
f90f613c | 1272 | .qc_defer = ata_std_qc_defer, |
faf0b2e5 LY |
1273 | .qc_prep = sata_fsl_qc_prep, |
1274 | .qc_issue = sata_fsl_qc_issue, | |
4c9bf4e7 | 1275 | .qc_fill_rtf = sata_fsl_qc_fill_rtf, |
faf0b2e5 LY |
1276 | |
1277 | .scr_read = sata_fsl_scr_read, | |
1278 | .scr_write = sata_fsl_scr_write, | |
1279 | ||
1280 | .freeze = sata_fsl_freeze, | |
1281 | .thaw = sata_fsl_thaw, | |
a1efdaba | 1282 | .softreset = sata_fsl_softreset, |
a0a74d1e | 1283 | .hardreset = sata_fsl_hardreset, |
034d8e8f AK |
1284 | .pmp_softreset = sata_fsl_softreset, |
1285 | .error_handler = sata_fsl_error_handler, | |
faf0b2e5 LY |
1286 | .post_internal_cmd = sata_fsl_post_internal_cmd, |
1287 | ||
1288 | .port_start = sata_fsl_port_start, | |
1289 | .port_stop = sata_fsl_port_stop, | |
034d8e8f AK |
1290 | |
1291 | .pmp_attach = sata_fsl_pmp_attach, | |
1292 | .pmp_detach = sata_fsl_pmp_detach, | |
faf0b2e5 LY |
1293 | }; |
1294 | ||
1295 | static const struct ata_port_info sata_fsl_port_info[] = { | |
1296 | { | |
1297 | .flags = SATA_FSL_HOST_FLAGS, | |
14bdef98 EIB |
1298 | .pio_mask = ATA_PIO4, |
1299 | .udma_mask = ATA_UDMA6, | |
faf0b2e5 LY |
1300 | .port_ops = &sata_fsl_ops, |
1301 | }, | |
1302 | }; | |
1303 | ||
1c48a5c9 | 1304 | static int sata_fsl_probe(struct platform_device *ofdev) |
faf0b2e5 | 1305 | { |
e4ac522b | 1306 | int retval = -ENXIO; |
faf0b2e5 LY |
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; | |
faf0b2e5 LY |
1311 | int irq; |
1312 | struct ata_host *host; | |
578ca87c | 1313 | u32 temp; |
faf0b2e5 LY |
1314 | |
1315 | struct ata_port_info pi = sata_fsl_port_info[0]; | |
1316 | const struct ata_port_info *ppi[] = { &pi, NULL }; | |
1317 | ||
a44fec1f | 1318 | dev_info(&ofdev->dev, "Sata FSL Platform/CSB Driver init\n"); |
faf0b2e5 | 1319 | |
61c7a080 | 1320 | hcr_base = of_iomap(ofdev->dev.of_node, 0); |
faf0b2e5 LY |
1321 | if (!hcr_base) |
1322 | goto error_exit_with_cleanup; | |
1323 | ||
1324 | ssr_base = hcr_base + 0x100; | |
1325 | csr_base = hcr_base + 0x140; | |
1326 | ||
578ca87c PK |
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); | |
1331 | } | |
1332 | ||
faf0b2e5 LY |
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); | |
1336 | ||
1337 | host_priv = kzalloc(sizeof(struct sata_fsl_host_priv), GFP_KERNEL); | |
1338 | if (!host_priv) | |
1339 | goto error_exit_with_cleanup; | |
1340 | ||
1341 | host_priv->hcr_base = hcr_base; | |
1342 | host_priv->ssr_base = ssr_base; | |
1343 | host_priv->csr_base = csr_base; | |
1344 | ||
61c7a080 | 1345 | irq = irq_of_parse_and_map(ofdev->dev.of_node, 0); |
faf0b2e5 | 1346 | if (irq < 0) { |
a44fec1f | 1347 | dev_err(&ofdev->dev, "invalid irq from platform\n"); |
faf0b2e5 LY |
1348 | goto error_exit_with_cleanup; |
1349 | } | |
79b3edc9 | 1350 | host_priv->irq = irq; |
faf0b2e5 | 1351 | |
2f957fc9 X |
1352 | if (of_device_is_compatible(ofdev->dev.of_node, "fsl,pq-sata-v2")) |
1353 | host_priv->data_snoop = DATA_SNOOP_ENABLE_V2; | |
1354 | else | |
1355 | host_priv->data_snoop = DATA_SNOOP_ENABLE_V1; | |
1356 | ||
faf0b2e5 LY |
1357 | /* allocate host structure */ |
1358 | host = ata_host_alloc_pinfo(&ofdev->dev, ppi, SATA_FSL_MAX_PORTS); | |
1359 | ||
1360 | /* host->iomap is not used currently */ | |
1361 | host->private_data = host_priv; | |
1362 | ||
faf0b2e5 LY |
1363 | /* initialize host controller */ |
1364 | sata_fsl_init_controller(host); | |
1365 | ||
1366 | /* | |
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 | |
1370 | */ | |
1371 | ata_host_activate(host, irq, sata_fsl_interrupt, SATA_FSL_IRQ_FLAG, | |
1372 | &sata_fsl_sht); | |
1373 | ||
1374 | dev_set_drvdata(&ofdev->dev, host); | |
1375 | ||
1376 | return 0; | |
1377 | ||
1378 | error_exit_with_cleanup: | |
1379 | ||
1380 | if (hcr_base) | |
1381 | iounmap(hcr_base); | |
1382 | if (host_priv) | |
1383 | kfree(host_priv); | |
1384 | ||
1385 | return retval; | |
1386 | } | |
1387 | ||
2dc11581 | 1388 | static int sata_fsl_remove(struct platform_device *ofdev) |
faf0b2e5 LY |
1389 | { |
1390 | struct ata_host *host = dev_get_drvdata(&ofdev->dev); | |
1391 | struct sata_fsl_host_priv *host_priv = host->private_data; | |
1392 | ||
1393 | ata_host_detach(host); | |
1394 | ||
1395 | dev_set_drvdata(&ofdev->dev, NULL); | |
1396 | ||
79b3edc9 | 1397 | irq_dispose_mapping(host_priv->irq); |
faf0b2e5 LY |
1398 | iounmap(host_priv->hcr_base); |
1399 | kfree(host_priv); | |
1400 | ||
1401 | return 0; | |
1402 | } | |
1403 | ||
dc77ad4c | 1404 | #ifdef CONFIG_PM |
2dc11581 | 1405 | static int sata_fsl_suspend(struct platform_device *op, pm_message_t state) |
dc77ad4c DL |
1406 | { |
1407 | struct ata_host *host = dev_get_drvdata(&op->dev); | |
1408 | return ata_host_suspend(host, state); | |
1409 | } | |
1410 | ||
2dc11581 | 1411 | static int sata_fsl_resume(struct platform_device *op) |
dc77ad4c DL |
1412 | { |
1413 | struct ata_host *host = dev_get_drvdata(&op->dev); | |
1414 | struct sata_fsl_host_priv *host_priv = host->private_data; | |
1415 | int ret; | |
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; | |
1419 | ||
1420 | ret = sata_fsl_init_controller(host); | |
1421 | if (ret) { | |
a44fec1f | 1422 | dev_err(&op->dev, "Error initializing hardware\n"); |
dc77ad4c DL |
1423 | return ret; |
1424 | } | |
1425 | ||
1426 | /* Recovery the CHBA register in host controller cmd register set */ | |
1427 | iowrite32(pp->cmdslot_paddr & 0xffffffff, hcr_base + CHBA); | |
1428 | ||
1429 | ata_host_resume(host); | |
1430 | return 0; | |
1431 | } | |
1432 | #endif | |
1433 | ||
faf0b2e5 LY |
1434 | static struct of_device_id fsl_sata_match[] = { |
1435 | { | |
96ce1b6d | 1436 | .compatible = "fsl,pq-sata", |
faf0b2e5 | 1437 | }, |
2f957fc9 X |
1438 | { |
1439 | .compatible = "fsl,pq-sata-v2", | |
1440 | }, | |
faf0b2e5 LY |
1441 | {}, |
1442 | }; | |
1443 | ||
1444 | MODULE_DEVICE_TABLE(of, fsl_sata_match); | |
1445 | ||
1c48a5c9 | 1446 | static struct platform_driver fsl_sata_driver = { |
4018294b GL |
1447 | .driver = { |
1448 | .name = "fsl-sata", | |
1449 | .owner = THIS_MODULE, | |
1450 | .of_match_table = fsl_sata_match, | |
1451 | }, | |
faf0b2e5 LY |
1452 | .probe = sata_fsl_probe, |
1453 | .remove = sata_fsl_remove, | |
dc77ad4c DL |
1454 | #ifdef CONFIG_PM |
1455 | .suspend = sata_fsl_suspend, | |
1456 | .resume = sata_fsl_resume, | |
1457 | #endif | |
faf0b2e5 LY |
1458 | }; |
1459 | ||
1460 | static int __init sata_fsl_init(void) | |
1461 | { | |
1c48a5c9 | 1462 | platform_driver_register(&fsl_sata_driver); |
faf0b2e5 LY |
1463 | return 0; |
1464 | } | |
1465 | ||
1466 | static void __exit sata_fsl_exit(void) | |
1467 | { | |
1c48a5c9 | 1468 | platform_driver_unregister(&fsl_sata_driver); |
faf0b2e5 LY |
1469 | } |
1470 | ||
1471 | MODULE_LICENSE("GPL"); | |
1472 | MODULE_AUTHOR("Ashish Kalra, Freescale Semiconductor"); | |
1473 | MODULE_DESCRIPTION("Freescale 3.0Gbps SATA controller low level driver"); | |
1474 | MODULE_VERSION("1.10"); | |
1475 | ||
1476 | module_init(sata_fsl_init); | |
1477 | module_exit(sata_fsl_exit); |