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[PATCH] add Fujitsu Siemens Tablet PC devices to 8250_pnp.c
[linux-2.6/mini2440.git] / drivers / ata / sata_sx4.c
blob1a081c3a8c06a24b3cd4ba51e6d643435ed2ca21
1 /*
2 * sata_sx4.c - Promise SATA
3 *
4 * Maintained by: Jeff Garzik <jgarzik@pobox.com>
5 * Please ALWAYS copy linux-ide@vger.kernel.org
6 * on emails.
7 *
8 * Copyright 2003-2004 Red Hat, Inc.
9 *
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2, or (at your option)
14 * any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; see the file COPYING. If not, write to
23 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
24 *
25 *
26 * libata documentation is available via 'make {ps|pdf}docs',
27 * as Documentation/DocBook/libata.*
28 *
29 * Hardware documentation available under NDA.
30 *
31 */
32
33 #include <linux/kernel.h>
34 #include <linux/module.h>
35 #include <linux/pci.h>
36 #include <linux/init.h>
37 #include <linux/blkdev.h>
38 #include <linux/delay.h>
39 #include <linux/interrupt.h>
40 #include <linux/device.h>
41 #include <scsi/scsi_host.h>
42 #include <scsi/scsi_cmnd.h>
43 #include <linux/libata.h>
44 #include "sata_promise.h"
45
46 #define DRV_NAME "sata_sx4"
47 #define DRV_VERSION "0.10"
48
49
50 enum {
51 PDC_MMIO_BAR = 3,
52 PDC_DIMM_BAR = 4,
53
54 PDC_PRD_TBL = 0x44, /* Direct command DMA table addr */
55
56 PDC_PKT_SUBMIT = 0x40, /* Command packet pointer addr */
57 PDC_HDMA_PKT_SUBMIT = 0x100, /* Host DMA packet pointer addr */
58 PDC_INT_SEQMASK = 0x40, /* Mask of asserted SEQ INTs */
59 PDC_HDMA_CTLSTAT = 0x12C, /* Host DMA control / status */
60
61 PDC_20621_SEQCTL = 0x400,
62 PDC_20621_SEQMASK = 0x480,
63 PDC_20621_GENERAL_CTL = 0x484,
64 PDC_20621_PAGE_SIZE = (32 * 1024),
65
66 /* chosen, not constant, values; we design our own DIMM mem map */
67 PDC_20621_DIMM_WINDOW = 0x0C, /* page# for 32K DIMM window */
68 PDC_20621_DIMM_BASE = 0x00200000,
69 PDC_20621_DIMM_DATA = (64 * 1024),
70 PDC_DIMM_DATA_STEP = (256 * 1024),
71 PDC_DIMM_WINDOW_STEP = (8 * 1024),
72 PDC_DIMM_HOST_PRD = (6 * 1024),
73 PDC_DIMM_HOST_PKT = (128 * 0),
74 PDC_DIMM_HPKT_PRD = (128 * 1),
75 PDC_DIMM_ATA_PKT = (128 * 2),
76 PDC_DIMM_APKT_PRD = (128 * 3),
77 PDC_DIMM_HEADER_SZ = PDC_DIMM_APKT_PRD + 128,
78 PDC_PAGE_WINDOW = 0x40,
79 PDC_PAGE_DATA = PDC_PAGE_WINDOW +
80 (PDC_20621_DIMM_DATA / PDC_20621_PAGE_SIZE),
81 PDC_PAGE_SET = PDC_DIMM_DATA_STEP / PDC_20621_PAGE_SIZE,
82
83 PDC_CHIP0_OFS = 0xC0000, /* offset of chip #0 */
84
85 PDC_20621_ERR_MASK = (1<<19) | (1<<20) | (1<<21) | (1<<22) |
86 (1<<23),
87
88 board_20621 = 0, /* FastTrak S150 SX4 */
89
90 PDC_RESET = (1 << 11), /* HDMA reset */
91
92 PDC_MAX_HDMA = 32,
93 PDC_HDMA_Q_MASK = (PDC_MAX_HDMA - 1),
94
95 PDC_DIMM0_SPD_DEV_ADDRESS = 0x50,
96 PDC_DIMM1_SPD_DEV_ADDRESS = 0x51,
97 PDC_MAX_DIMM_MODULE = 0x02,
98 PDC_I2C_CONTROL_OFFSET = 0x48,
99 PDC_I2C_ADDR_DATA_OFFSET = 0x4C,
100 PDC_DIMM0_CONTROL_OFFSET = 0x80,
101 PDC_DIMM1_CONTROL_OFFSET = 0x84,
102 PDC_SDRAM_CONTROL_OFFSET = 0x88,
103 PDC_I2C_WRITE = 0x00000000,
104 PDC_I2C_READ = 0x00000040,
105 PDC_I2C_START = 0x00000080,
106 PDC_I2C_MASK_INT = 0x00000020,
107 PDC_I2C_COMPLETE = 0x00010000,
108 PDC_I2C_NO_ACK = 0x00100000,
109 PDC_DIMM_SPD_SUBADDRESS_START = 0x00,
110 PDC_DIMM_SPD_SUBADDRESS_END = 0x7F,
111 PDC_DIMM_SPD_ROW_NUM = 3,
112 PDC_DIMM_SPD_COLUMN_NUM = 4,
113 PDC_DIMM_SPD_MODULE_ROW = 5,
114 PDC_DIMM_SPD_TYPE = 11,
115 PDC_DIMM_SPD_FRESH_RATE = 12,
116 PDC_DIMM_SPD_BANK_NUM = 17,
117 PDC_DIMM_SPD_CAS_LATENCY = 18,
118 PDC_DIMM_SPD_ATTRIBUTE = 21,
119 PDC_DIMM_SPD_ROW_PRE_CHARGE = 27,
120 PDC_DIMM_SPD_ROW_ACTIVE_DELAY = 28,
121 PDC_DIMM_SPD_RAS_CAS_DELAY = 29,
122 PDC_DIMM_SPD_ACTIVE_PRECHARGE = 30,
123 PDC_DIMM_SPD_SYSTEM_FREQ = 126,
124 PDC_CTL_STATUS = 0x08,
125 PDC_DIMM_WINDOW_CTLR = 0x0C,
126 PDC_TIME_CONTROL = 0x3C,
127 PDC_TIME_PERIOD = 0x40,
128 PDC_TIME_COUNTER = 0x44,
129 PDC_GENERAL_CTLR = 0x484,
130 PCI_PLL_INIT = 0x8A531824,
131 PCI_X_TCOUNT = 0xEE1E5CFF
132 };
133
134
135 struct pdc_port_priv {
136 u8 dimm_buf[(ATA_PRD_SZ * ATA_MAX_PRD) + 512];
137 u8 *pkt;
138 dma_addr_t pkt_dma;
139 };
140
141 struct pdc_host_priv {
142 unsigned int doing_hdma;
143 unsigned int hdma_prod;
144 unsigned int hdma_cons;
145 struct {
146 struct ata_queued_cmd *qc;
147 unsigned int seq;
148 unsigned long pkt_ofs;
149 } hdma[32];
150 };
151
152
153 static int pdc_sata_init_one (struct pci_dev *pdev, const struct pci_device_id *ent);
154 static irqreturn_t pdc20621_interrupt (int irq, void *dev_instance);
155 static void pdc_eng_timeout(struct ata_port *ap);
156 static void pdc_20621_phy_reset (struct ata_port *ap);
157 static int pdc_port_start(struct ata_port *ap);
158 static void pdc20621_qc_prep(struct ata_queued_cmd *qc);
159 static void pdc_tf_load_mmio(struct ata_port *ap, const struct ata_taskfile *tf);
160 static void pdc_exec_command_mmio(struct ata_port *ap, const struct ata_taskfile *tf);
161 static unsigned int pdc20621_dimm_init(struct ata_probe_ent *pe);
162 static int pdc20621_detect_dimm(struct ata_probe_ent *pe);
163 static unsigned int pdc20621_i2c_read(struct ata_probe_ent *pe,
164 u32 device, u32 subaddr, u32 *pdata);
165 static int pdc20621_prog_dimm0(struct ata_probe_ent *pe);
166 static unsigned int pdc20621_prog_dimm_global(struct ata_probe_ent *pe);
167 #ifdef ATA_VERBOSE_DEBUG
168 static void pdc20621_get_from_dimm(struct ata_probe_ent *pe,
169 void *psource, u32 offset, u32 size);
170 #endif
171 static void pdc20621_put_to_dimm(struct ata_probe_ent *pe,
172 void *psource, u32 offset, u32 size);
173 static void pdc20621_irq_clear(struct ata_port *ap);
174 static unsigned int pdc20621_qc_issue_prot(struct ata_queued_cmd *qc);
175
176
177 static struct scsi_host_template pdc_sata_sht = {
178 .module = THIS_MODULE,
179 .name = DRV_NAME,
180 .ioctl = ata_scsi_ioctl,
181 .queuecommand = ata_scsi_queuecmd,
182 .can_queue = ATA_DEF_QUEUE,
183 .this_id = ATA_SHT_THIS_ID,
184 .sg_tablesize = LIBATA_MAX_PRD,
185 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
186 .emulated = ATA_SHT_EMULATED,
187 .use_clustering = ATA_SHT_USE_CLUSTERING,
188 .proc_name = DRV_NAME,
189 .dma_boundary = ATA_DMA_BOUNDARY,
190 .slave_configure = ata_scsi_slave_config,
191 .slave_destroy = ata_scsi_slave_destroy,
192 .bios_param = ata_std_bios_param,
193 };
194
195 static const struct ata_port_operations pdc_20621_ops = {
196 .port_disable = ata_port_disable,
197 .tf_load = pdc_tf_load_mmio,
198 .tf_read = ata_tf_read,
199 .check_status = ata_check_status,
200 .exec_command = pdc_exec_command_mmio,
201 .dev_select = ata_std_dev_select,
202 .phy_reset = pdc_20621_phy_reset,
203 .qc_prep = pdc20621_qc_prep,
204 .qc_issue = pdc20621_qc_issue_prot,
205 .data_xfer = ata_data_xfer,
206 .eng_timeout = pdc_eng_timeout,
207 .irq_handler = pdc20621_interrupt,
208 .irq_clear = pdc20621_irq_clear,
209 .irq_on = ata_irq_on,
210 .irq_ack = ata_irq_ack,
211 .port_start = pdc_port_start,
212 };
213
214 static const struct ata_port_info pdc_port_info[] = {
215 /* board_20621 */
216 {
217 .sht = &pdc_sata_sht,
218 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
219 ATA_FLAG_SRST | ATA_FLAG_MMIO |
220 ATA_FLAG_NO_ATAPI | ATA_FLAG_PIO_POLLING,
221 .pio_mask = 0x1f, /* pio0-4 */
222 .mwdma_mask = 0x07, /* mwdma0-2 */
223 .udma_mask = 0x7f, /* udma0-6 ; FIXME */
224 .port_ops = &pdc_20621_ops,
225 },
226
227 };
228
229 static const struct pci_device_id pdc_sata_pci_tbl[] = {
230 { PCI_VDEVICE(PROMISE, 0x6622), board_20621 },
231
232 { } /* terminate list */
233 };
234
235 static struct pci_driver pdc_sata_pci_driver = {
236 .name = DRV_NAME,
237 .id_table = pdc_sata_pci_tbl,
238 .probe = pdc_sata_init_one,
239 .remove = ata_pci_remove_one,
240 };
241
242
243 static int pdc_port_start(struct ata_port *ap)
244 {
245 struct device *dev = ap->host->dev;
246 struct pdc_port_priv *pp;
247 int rc;
248
249 rc = ata_port_start(ap);
250 if (rc)
251 return rc;
252
253 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
254 if (!pp)
255 return -ENOMEM;
256
257 pp->pkt = dmam_alloc_coherent(dev, 128, &pp->pkt_dma, GFP_KERNEL);
258 if (!pp->pkt)
259 return -ENOMEM;
260
261 ap->private_data = pp;
262
263 return 0;
264 }
265
266 static void pdc_20621_phy_reset (struct ata_port *ap)
267 {
268 VPRINTK("ENTER\n");
269 ap->cbl = ATA_CBL_SATA;
270 ata_port_probe(ap);
271 ata_bus_reset(ap);
272 }
273
274 static inline void pdc20621_ata_sg(struct ata_taskfile *tf, u8 *buf,
275 unsigned int portno,
276 unsigned int total_len)
277 {
278 u32 addr;
279 unsigned int dw = PDC_DIMM_APKT_PRD >> 2;
280 u32 *buf32 = (u32 *) buf;
281
282 /* output ATA packet S/G table */
283 addr = PDC_20621_DIMM_BASE + PDC_20621_DIMM_DATA +
284 (PDC_DIMM_DATA_STEP * portno);
285 VPRINTK("ATA sg addr 0x%x, %d\n", addr, addr);
286 buf32[dw] = cpu_to_le32(addr);
287 buf32[dw + 1] = cpu_to_le32(total_len | ATA_PRD_EOT);
288
289 VPRINTK("ATA PSG @ %x == (0x%x, 0x%x)\n",
290 PDC_20621_DIMM_BASE +
291 (PDC_DIMM_WINDOW_STEP * portno) +
292 PDC_DIMM_APKT_PRD,
293 buf32[dw], buf32[dw + 1]);
294 }
295
296 static inline void pdc20621_host_sg(struct ata_taskfile *tf, u8 *buf,
297 unsigned int portno,
298 unsigned int total_len)
299 {
300 u32 addr;
301 unsigned int dw = PDC_DIMM_HPKT_PRD >> 2;
302 u32 *buf32 = (u32 *) buf;
303
304 /* output Host DMA packet S/G table */
305 addr = PDC_20621_DIMM_BASE + PDC_20621_DIMM_DATA +
306 (PDC_DIMM_DATA_STEP * portno);
307
308 buf32[dw] = cpu_to_le32(addr);
309 buf32[dw + 1] = cpu_to_le32(total_len | ATA_PRD_EOT);
310
311 VPRINTK("HOST PSG @ %x == (0x%x, 0x%x)\n",
312 PDC_20621_DIMM_BASE +
313 (PDC_DIMM_WINDOW_STEP * portno) +
314 PDC_DIMM_HPKT_PRD,
315 buf32[dw], buf32[dw + 1]);
316 }
317
318 static inline unsigned int pdc20621_ata_pkt(struct ata_taskfile *tf,
319 unsigned int devno, u8 *buf,
320 unsigned int portno)
321 {
322 unsigned int i, dw;
323 u32 *buf32 = (u32 *) buf;
324 u8 dev_reg;
325
326 unsigned int dimm_sg = PDC_20621_DIMM_BASE +
327 (PDC_DIMM_WINDOW_STEP * portno) +
328 PDC_DIMM_APKT_PRD;
329 VPRINTK("ENTER, dimm_sg == 0x%x, %d\n", dimm_sg, dimm_sg);
330
331 i = PDC_DIMM_ATA_PKT;
332
333 /*
334 * Set up ATA packet
335 */
336 if ((tf->protocol == ATA_PROT_DMA) && (!(tf->flags & ATA_TFLAG_WRITE)))
337 buf[i++] = PDC_PKT_READ;
338 else if (tf->protocol == ATA_PROT_NODATA)
339 buf[i++] = PDC_PKT_NODATA;
340 else
341 buf[i++] = 0;
342 buf[i++] = 0; /* reserved */
343 buf[i++] = portno + 1; /* seq. id */
344 buf[i++] = 0xff; /* delay seq. id */
345
346 /* dimm dma S/G, and next-pkt */
347 dw = i >> 2;
348 if (tf->protocol == ATA_PROT_NODATA)
349 buf32[dw] = 0;
350 else
351 buf32[dw] = cpu_to_le32(dimm_sg);
352 buf32[dw + 1] = 0;
353 i += 8;
354
355 if (devno == 0)
356 dev_reg = ATA_DEVICE_OBS;
357 else
358 dev_reg = ATA_DEVICE_OBS | ATA_DEV1;
359
360 /* select device */
361 buf[i++] = (1 << 5) | PDC_PKT_CLEAR_BSY | ATA_REG_DEVICE;
362 buf[i++] = dev_reg;
363
364 /* device control register */
365 buf[i++] = (1 << 5) | PDC_REG_DEVCTL;
366 buf[i++] = tf->ctl;
367
368 return i;
369 }
370
371 static inline void pdc20621_host_pkt(struct ata_taskfile *tf, u8 *buf,
372 unsigned int portno)
373 {
374 unsigned int dw;
375 u32 tmp, *buf32 = (u32 *) buf;
376
377 unsigned int host_sg = PDC_20621_DIMM_BASE +
378 (PDC_DIMM_WINDOW_STEP * portno) +
379 PDC_DIMM_HOST_PRD;
380 unsigned int dimm_sg = PDC_20621_DIMM_BASE +
381 (PDC_DIMM_WINDOW_STEP * portno) +
382 PDC_DIMM_HPKT_PRD;
383 VPRINTK("ENTER, dimm_sg == 0x%x, %d\n", dimm_sg, dimm_sg);
384 VPRINTK("host_sg == 0x%x, %d\n", host_sg, host_sg);
385
386 dw = PDC_DIMM_HOST_PKT >> 2;
387
388 /*
389 * Set up Host DMA packet
390 */
391 if ((tf->protocol == ATA_PROT_DMA) && (!(tf->flags & ATA_TFLAG_WRITE)))
392 tmp = PDC_PKT_READ;
393 else
394 tmp = 0;
395 tmp |= ((portno + 1 + 4) << 16); /* seq. id */
396 tmp |= (0xff << 24); /* delay seq. id */
397 buf32[dw + 0] = cpu_to_le32(tmp);
398 buf32[dw + 1] = cpu_to_le32(host_sg);
399 buf32[dw + 2] = cpu_to_le32(dimm_sg);
400 buf32[dw + 3] = 0;
401
402 VPRINTK("HOST PKT @ %x == (0x%x 0x%x 0x%x 0x%x)\n",
403 PDC_20621_DIMM_BASE + (PDC_DIMM_WINDOW_STEP * portno) +
404 PDC_DIMM_HOST_PKT,
405 buf32[dw + 0],
406 buf32[dw + 1],
407 buf32[dw + 2],
408 buf32[dw + 3]);
409 }
410
411 static void pdc20621_dma_prep(struct ata_queued_cmd *qc)
412 {
413 struct scatterlist *sg;
414 struct ata_port *ap = qc->ap;
415 struct pdc_port_priv *pp = ap->private_data;
416 void __iomem *mmio = ap->host->iomap[PDC_MMIO_BAR];
417 void __iomem *dimm_mmio = ap->host->iomap[PDC_DIMM_BAR];
418 unsigned int portno = ap->port_no;
419 unsigned int i, idx, total_len = 0, sgt_len;
420 u32 *buf = (u32 *) &pp->dimm_buf[PDC_DIMM_HEADER_SZ];
421
422 WARN_ON(!(qc->flags & ATA_QCFLAG_DMAMAP));
423
424 VPRINTK("ata%u: ENTER\n", ap->print_id);
425
426 /* hard-code chip #0 */
427 mmio += PDC_CHIP0_OFS;
428
429 /*
430 * Build S/G table
431 */
432 idx = 0;
433 ata_for_each_sg(sg, qc) {
434 buf[idx++] = cpu_to_le32(sg_dma_address(sg));
435 buf[idx++] = cpu_to_le32(sg_dma_len(sg));
436 total_len += sg_dma_len(sg);
437 }
438 buf[idx - 1] |= cpu_to_le32(ATA_PRD_EOT);
439 sgt_len = idx * 4;
440
441 /*
442 * Build ATA, host DMA packets
443 */
444 pdc20621_host_sg(&qc->tf, &pp->dimm_buf[0], portno, total_len);
445 pdc20621_host_pkt(&qc->tf, &pp->dimm_buf[0], portno);
446
447 pdc20621_ata_sg(&qc->tf, &pp->dimm_buf[0], portno, total_len);
448 i = pdc20621_ata_pkt(&qc->tf, qc->dev->devno, &pp->dimm_buf[0], portno);
449
450 if (qc->tf.flags & ATA_TFLAG_LBA48)
451 i = pdc_prep_lba48(&qc->tf, &pp->dimm_buf[0], i);
452 else
453 i = pdc_prep_lba28(&qc->tf, &pp->dimm_buf[0], i);
454
455 pdc_pkt_footer(&qc->tf, &pp->dimm_buf[0], i);
456
457 /* copy three S/G tables and two packets to DIMM MMIO window */
458 memcpy_toio(dimm_mmio + (portno * PDC_DIMM_WINDOW_STEP),
459 &pp->dimm_buf, PDC_DIMM_HEADER_SZ);
460 memcpy_toio(dimm_mmio + (portno * PDC_DIMM_WINDOW_STEP) +
461 PDC_DIMM_HOST_PRD,
462 &pp->dimm_buf[PDC_DIMM_HEADER_SZ], sgt_len);
463
464 /* force host FIFO dump */
465 writel(0x00000001, mmio + PDC_20621_GENERAL_CTL);
466
467 readl(dimm_mmio); /* MMIO PCI posting flush */
468
469 VPRINTK("ata pkt buf ofs %u, prd size %u, mmio copied\n", i, sgt_len);
470 }
471
472 static void pdc20621_nodata_prep(struct ata_queued_cmd *qc)
473 {
474 struct ata_port *ap = qc->ap;
475 struct pdc_port_priv *pp = ap->private_data;
476 void __iomem *mmio = ap->host->iomap[PDC_MMIO_BAR];
477 void __iomem *dimm_mmio = ap->host->iomap[PDC_DIMM_BAR];
478 unsigned int portno = ap->port_no;
479 unsigned int i;
480
481 VPRINTK("ata%u: ENTER\n", ap->print_id);
482
483 /* hard-code chip #0 */
484 mmio += PDC_CHIP0_OFS;
485
486 i = pdc20621_ata_pkt(&qc->tf, qc->dev->devno, &pp->dimm_buf[0], portno);
487
488 if (qc->tf.flags & ATA_TFLAG_LBA48)
489 i = pdc_prep_lba48(&qc->tf, &pp->dimm_buf[0], i);
490 else
491 i = pdc_prep_lba28(&qc->tf, &pp->dimm_buf[0], i);
492
493 pdc_pkt_footer(&qc->tf, &pp->dimm_buf[0], i);
494
495 /* copy three S/G tables and two packets to DIMM MMIO window */
496 memcpy_toio(dimm_mmio + (portno * PDC_DIMM_WINDOW_STEP),
497 &pp->dimm_buf, PDC_DIMM_HEADER_SZ);
498
499 /* force host FIFO dump */
500 writel(0x00000001, mmio + PDC_20621_GENERAL_CTL);
501
502 readl(dimm_mmio); /* MMIO PCI posting flush */
503
504 VPRINTK("ata pkt buf ofs %u, mmio copied\n", i);
505 }
506
507 static void pdc20621_qc_prep(struct ata_queued_cmd *qc)
508 {
509 switch (qc->tf.protocol) {
510 case ATA_PROT_DMA:
511 pdc20621_dma_prep(qc);
512 break;
513 case ATA_PROT_NODATA:
514 pdc20621_nodata_prep(qc);
515 break;
516 default:
517 break;
518 }
519 }
520
521 static void __pdc20621_push_hdma(struct ata_queued_cmd *qc,
522 unsigned int seq,
523 u32 pkt_ofs)
524 {
525 struct ata_port *ap = qc->ap;
526 struct ata_host *host = ap->host;
527 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
528
529 /* hard-code chip #0 */
530 mmio += PDC_CHIP0_OFS;
531
532 writel(0x00000001, mmio + PDC_20621_SEQCTL + (seq * 4));
533 readl(mmio + PDC_20621_SEQCTL + (seq * 4)); /* flush */
534
535 writel(pkt_ofs, mmio + PDC_HDMA_PKT_SUBMIT);
536 readl(mmio + PDC_HDMA_PKT_SUBMIT); /* flush */
537 }
538
539 static void pdc20621_push_hdma(struct ata_queued_cmd *qc,
540 unsigned int seq,
541 u32 pkt_ofs)
542 {
543 struct ata_port *ap = qc->ap;
544 struct pdc_host_priv *pp = ap->host->private_data;
545 unsigned int idx = pp->hdma_prod & PDC_HDMA_Q_MASK;
546
547 if (!pp->doing_hdma) {
548 __pdc20621_push_hdma(qc, seq, pkt_ofs);
549 pp->doing_hdma = 1;
550 return;
551 }
552
553 pp->hdma[idx].qc = qc;
554 pp->hdma[idx].seq = seq;
555 pp->hdma[idx].pkt_ofs = pkt_ofs;
556 pp->hdma_prod++;
557 }
558
559 static void pdc20621_pop_hdma(struct ata_queued_cmd *qc)
560 {
561 struct ata_port *ap = qc->ap;
562 struct pdc_host_priv *pp = ap->host->private_data;
563 unsigned int idx = pp->hdma_cons & PDC_HDMA_Q_MASK;
564
565 /* if nothing on queue, we're done */
566 if (pp->hdma_prod == pp->hdma_cons) {
567 pp->doing_hdma = 0;
568 return;
569 }
570
571 __pdc20621_push_hdma(pp->hdma[idx].qc, pp->hdma[idx].seq,
572 pp->hdma[idx].pkt_ofs);
573 pp->hdma_cons++;
574 }
575
576 #ifdef ATA_VERBOSE_DEBUG
577 static void pdc20621_dump_hdma(struct ata_queued_cmd *qc)
578 {
579 struct ata_port *ap = qc->ap;
580 unsigned int port_no = ap->port_no;
581 void __iomem *dimm_mmio = ap->host->iomap[PDC_DIMM_BAR];
582
583 dimm_mmio += (port_no * PDC_DIMM_WINDOW_STEP);
584 dimm_mmio += PDC_DIMM_HOST_PKT;
585
586 printk(KERN_ERR "HDMA[0] == 0x%08X\n", readl(dimm_mmio));
587 printk(KERN_ERR "HDMA[1] == 0x%08X\n", readl(dimm_mmio + 4));
588 printk(KERN_ERR "HDMA[2] == 0x%08X\n", readl(dimm_mmio + 8));
589 printk(KERN_ERR "HDMA[3] == 0x%08X\n", readl(dimm_mmio + 12));
590 }
591 #else
592 static inline void pdc20621_dump_hdma(struct ata_queued_cmd *qc) { }
593 #endif /* ATA_VERBOSE_DEBUG */
594
595 static void pdc20621_packet_start(struct ata_queued_cmd *qc)
596 {
597 struct ata_port *ap = qc->ap;
598 struct ata_host *host = ap->host;
599 unsigned int port_no = ap->port_no;
600 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
601 unsigned int rw = (qc->tf.flags & ATA_TFLAG_WRITE);
602 u8 seq = (u8) (port_no + 1);
603 unsigned int port_ofs;
604
605 /* hard-code chip #0 */
606 mmio += PDC_CHIP0_OFS;
607
608 VPRINTK("ata%u: ENTER\n", ap->print_id);
609
610 wmb(); /* flush PRD, pkt writes */
611
612 port_ofs = PDC_20621_DIMM_BASE + (PDC_DIMM_WINDOW_STEP * port_no);
613
614 /* if writing, we (1) DMA to DIMM, then (2) do ATA command */
615 if (rw && qc->tf.protocol == ATA_PROT_DMA) {
616 seq += 4;
617
618 pdc20621_dump_hdma(qc);
619 pdc20621_push_hdma(qc, seq, port_ofs + PDC_DIMM_HOST_PKT);
620 VPRINTK("queued ofs 0x%x (%u), seq %u\n",
621 port_ofs + PDC_DIMM_HOST_PKT,
622 port_ofs + PDC_DIMM_HOST_PKT,
623 seq);
624 } else {
625 writel(0x00000001, mmio + PDC_20621_SEQCTL + (seq * 4));
626 readl(mmio + PDC_20621_SEQCTL + (seq * 4)); /* flush */
627
628 writel(port_ofs + PDC_DIMM_ATA_PKT,
629 ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT);
630 readl(ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT);
631 VPRINTK("submitted ofs 0x%x (%u), seq %u\n",
632 port_ofs + PDC_DIMM_ATA_PKT,
633 port_ofs + PDC_DIMM_ATA_PKT,
634 seq);
635 }
636 }
637
638 static unsigned int pdc20621_qc_issue_prot(struct ata_queued_cmd *qc)
639 {
640 switch (qc->tf.protocol) {
641 case ATA_PROT_DMA:
642 case ATA_PROT_NODATA:
643 pdc20621_packet_start(qc);
644 return 0;
645
646 case ATA_PROT_ATAPI_DMA:
647 BUG();
648 break;
649
650 default:
651 break;
652 }
653
654 return ata_qc_issue_prot(qc);
655 }
656
657 static inline unsigned int pdc20621_host_intr( struct ata_port *ap,
658 struct ata_queued_cmd *qc,
659 unsigned int doing_hdma,
660 void __iomem *mmio)
661 {
662 unsigned int port_no = ap->port_no;
663 unsigned int port_ofs =
664 PDC_20621_DIMM_BASE + (PDC_DIMM_WINDOW_STEP * port_no);
665 u8 status;
666 unsigned int handled = 0;
667
668 VPRINTK("ENTER\n");
669
670 if ((qc->tf.protocol == ATA_PROT_DMA) && /* read */
671 (!(qc->tf.flags & ATA_TFLAG_WRITE))) {
672
673 /* step two - DMA from DIMM to host */
674 if (doing_hdma) {
675 VPRINTK("ata%u: read hdma, 0x%x 0x%x\n", ap->print_id,
676 readl(mmio + 0x104), readl(mmio + PDC_HDMA_CTLSTAT));
677 /* get drive status; clear intr; complete txn */
678 qc->err_mask |= ac_err_mask(ata_wait_idle(ap));
679 ata_qc_complete(qc);
680 pdc20621_pop_hdma(qc);
681 }
682
683 /* step one - exec ATA command */
684 else {
685 u8 seq = (u8) (port_no + 1 + 4);
686 VPRINTK("ata%u: read ata, 0x%x 0x%x\n", ap->print_id,
687 readl(mmio + 0x104), readl(mmio + PDC_HDMA_CTLSTAT));
688
689 /* submit hdma pkt */
690 pdc20621_dump_hdma(qc);
691 pdc20621_push_hdma(qc, seq,
692 port_ofs + PDC_DIMM_HOST_PKT);
693 }
694 handled = 1;
695
696 } else if (qc->tf.protocol == ATA_PROT_DMA) { /* write */
697
698 /* step one - DMA from host to DIMM */
699 if (doing_hdma) {
700 u8 seq = (u8) (port_no + 1);
701 VPRINTK("ata%u: write hdma, 0x%x 0x%x\n", ap->print_id,
702 readl(mmio + 0x104), readl(mmio + PDC_HDMA_CTLSTAT));
703
704 /* submit ata pkt */
705 writel(0x00000001, mmio + PDC_20621_SEQCTL + (seq * 4));
706 readl(mmio + PDC_20621_SEQCTL + (seq * 4));
707 writel(port_ofs + PDC_DIMM_ATA_PKT,
708 ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT);
709 readl(ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT);
710 }
711
712 /* step two - execute ATA command */
713 else {
714 VPRINTK("ata%u: write ata, 0x%x 0x%x\n", ap->print_id,
715 readl(mmio + 0x104), readl(mmio + PDC_HDMA_CTLSTAT));
716 /* get drive status; clear intr; complete txn */
717 qc->err_mask |= ac_err_mask(ata_wait_idle(ap));
718 ata_qc_complete(qc);
719 pdc20621_pop_hdma(qc);
720 }
721 handled = 1;
722
723 /* command completion, but no data xfer */
724 } else if (qc->tf.protocol == ATA_PROT_NODATA) {
725
726 status = ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
727 DPRINTK("BUS_NODATA (drv_stat 0x%X)\n", status);
728 qc->err_mask |= ac_err_mask(status);
729 ata_qc_complete(qc);
730 handled = 1;
731
732 } else {
733 ap->stats.idle_irq++;
734 }
735
736 return handled;
737 }
738
739 static void pdc20621_irq_clear(struct ata_port *ap)
740 {
741 struct ata_host *host = ap->host;
742 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
743
744 mmio += PDC_CHIP0_OFS;
745
746 readl(mmio + PDC_20621_SEQMASK);
747 }
748
749 static irqreturn_t pdc20621_interrupt (int irq, void *dev_instance)
750 {
751 struct ata_host *host = dev_instance;
752 struct ata_port *ap;
753 u32 mask = 0;
754 unsigned int i, tmp, port_no;
755 unsigned int handled = 0;
756 void __iomem *mmio_base;
757
758 VPRINTK("ENTER\n");
759
760 if (!host || !host->iomap[PDC_MMIO_BAR]) {
761 VPRINTK("QUICK EXIT\n");
762 return IRQ_NONE;
763 }
764
765 mmio_base = host->iomap[PDC_MMIO_BAR];
766
767 /* reading should also clear interrupts */
768 mmio_base += PDC_CHIP0_OFS;
769 mask = readl(mmio_base + PDC_20621_SEQMASK);
770 VPRINTK("mask == 0x%x\n", mask);
771
772 if (mask == 0xffffffff) {
773 VPRINTK("QUICK EXIT 2\n");
774 return IRQ_NONE;
775 }
776 mask &= 0xffff; /* only 16 tags possible */
777 if (!mask) {
778 VPRINTK("QUICK EXIT 3\n");
779 return IRQ_NONE;
780 }
781
782 spin_lock(&host->lock);
783
784 for (i = 1; i < 9; i++) {
785 port_no = i - 1;
786 if (port_no > 3)
787 port_no -= 4;
788 if (port_no >= host->n_ports)
789 ap = NULL;
790 else
791 ap = host->ports[port_no];
792 tmp = mask & (1 << i);
793 VPRINTK("seq %u, port_no %u, ap %p, tmp %x\n", i, port_no, ap, tmp);
794 if (tmp && ap &&
795 !(ap->flags & ATA_FLAG_DISABLED)) {
796 struct ata_queued_cmd *qc;
797
798 qc = ata_qc_from_tag(ap, ap->active_tag);
799 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING)))
800 handled += pdc20621_host_intr(ap, qc, (i > 4),
801 mmio_base);
802 }
803 }
804
805 spin_unlock(&host->lock);
806
807 VPRINTK("mask == 0x%x\n", mask);
808
809 VPRINTK("EXIT\n");
810
811 return IRQ_RETVAL(handled);
812 }
813
814 static void pdc_eng_timeout(struct ata_port *ap)
815 {
816 u8 drv_stat;
817 struct ata_host *host = ap->host;
818 struct ata_queued_cmd *qc;
819 unsigned long flags;
820
821 DPRINTK("ENTER\n");
822
823 spin_lock_irqsave(&host->lock, flags);
824
825 qc = ata_qc_from_tag(ap, ap->active_tag);
826
827 switch (qc->tf.protocol) {
828 case ATA_PROT_DMA:
829 case ATA_PROT_NODATA:
830 ata_port_printk(ap, KERN_ERR, "command timeout\n");
831 qc->err_mask |= __ac_err_mask(ata_wait_idle(ap));
832 break;
833
834 default:
835 drv_stat = ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
836
837 ata_port_printk(ap, KERN_ERR,
838 "unknown timeout, cmd 0x%x stat 0x%x\n",
839 qc->tf.command, drv_stat);
840
841 qc->err_mask |= ac_err_mask(drv_stat);
842 break;
843 }
844
845 spin_unlock_irqrestore(&host->lock, flags);
846 ata_eh_qc_complete(qc);
847 DPRINTK("EXIT\n");
848 }
849
850 static void pdc_tf_load_mmio(struct ata_port *ap, const struct ata_taskfile *tf)
851 {
852 WARN_ON (tf->protocol == ATA_PROT_DMA ||
853 tf->protocol == ATA_PROT_NODATA);
854 ata_tf_load(ap, tf);
855 }
856
857
858 static void pdc_exec_command_mmio(struct ata_port *ap, const struct ata_taskfile *tf)
859 {
860 WARN_ON (tf->protocol == ATA_PROT_DMA ||
861 tf->protocol == ATA_PROT_NODATA);
862 ata_exec_command(ap, tf);
863 }
864
865
866 static void pdc_sata_setup_port(struct ata_ioports *port, void __iomem *base)
867 {
868 port->cmd_addr = base;
869 port->data_addr = base;
870 port->feature_addr =
871 port->error_addr = base + 0x4;
872 port->nsect_addr = base + 0x8;
873 port->lbal_addr = base + 0xc;
874 port->lbam_addr = base + 0x10;
875 port->lbah_addr = base + 0x14;
876 port->device_addr = base + 0x18;
877 port->command_addr =
878 port->status_addr = base + 0x1c;
879 port->altstatus_addr =
880 port->ctl_addr = base + 0x38;
881 }
882
883
884 #ifdef ATA_VERBOSE_DEBUG
885 static void pdc20621_get_from_dimm(struct ata_probe_ent *pe, void *psource,
886 u32 offset, u32 size)
887 {
888 u32 window_size;
889 u16 idx;
890 u8 page_mask;
891 long dist;
892 void __iomem *mmio = pe->iomap[PDC_MMIO_BAR];
893 void __iomem *dimm_mmio = pe->iomap[PDC_DIMM_BAR];
894
895 /* hard-code chip #0 */
896 mmio += PDC_CHIP0_OFS;
897
898 page_mask = 0x00;
899 window_size = 0x2000 * 4; /* 32K byte uchar size */
900 idx = (u16) (offset / window_size);
901
902 writel(0x01, mmio + PDC_GENERAL_CTLR);
903 readl(mmio + PDC_GENERAL_CTLR);
904 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
905 readl(mmio + PDC_DIMM_WINDOW_CTLR);
906
907 offset -= (idx * window_size);
908 idx++;
909 dist = ((long) (window_size - (offset + size))) >= 0 ? size :
910 (long) (window_size - offset);
911 memcpy_fromio((char *) psource, (char *) (dimm_mmio + offset / 4),
912 dist);
913
914 psource += dist;
915 size -= dist;
916 for (; (long) size >= (long) window_size ;) {
917 writel(0x01, mmio + PDC_GENERAL_CTLR);
918 readl(mmio + PDC_GENERAL_CTLR);
919 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
920 readl(mmio + PDC_DIMM_WINDOW_CTLR);
921 memcpy_fromio((char *) psource, (char *) (dimm_mmio),
922 window_size / 4);
923 psource += window_size;
924 size -= window_size;
925 idx ++;
926 }
927
928 if (size) {
929 writel(0x01, mmio + PDC_GENERAL_CTLR);
930 readl(mmio + PDC_GENERAL_CTLR);
931 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
932 readl(mmio + PDC_DIMM_WINDOW_CTLR);
933 memcpy_fromio((char *) psource, (char *) (dimm_mmio),
934 size / 4);
935 }
936 }
937 #endif
938
939
940 static void pdc20621_put_to_dimm(struct ata_probe_ent *pe, void *psource,
941 u32 offset, u32 size)
942 {
943 u32 window_size;
944 u16 idx;
945 u8 page_mask;
946 long dist;
947 void __iomem *mmio = pe->iomap[PDC_MMIO_BAR];
948 void __iomem *dimm_mmio = pe->iomap[PDC_DIMM_BAR];
949
950 /* hard-code chip #0 */
951 mmio += PDC_CHIP0_OFS;
952
953 page_mask = 0x00;
954 window_size = 0x2000 * 4; /* 32K byte uchar size */
955 idx = (u16) (offset / window_size);
956
957 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
958 readl(mmio + PDC_DIMM_WINDOW_CTLR);
959 offset -= (idx * window_size);
960 idx++;
961 dist = ((long)(s32)(window_size - (offset + size))) >= 0 ? size :
962 (long) (window_size - offset);
963 memcpy_toio(dimm_mmio + offset / 4, psource, dist);
964 writel(0x01, mmio + PDC_GENERAL_CTLR);
965 readl(mmio + PDC_GENERAL_CTLR);
966
967 psource += dist;
968 size -= dist;
969 for (; (long) size >= (long) window_size ;) {
970 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
971 readl(mmio + PDC_DIMM_WINDOW_CTLR);
972 memcpy_toio(dimm_mmio, psource, window_size / 4);
973 writel(0x01, mmio + PDC_GENERAL_CTLR);
974 readl(mmio + PDC_GENERAL_CTLR);
975 psource += window_size;
976 size -= window_size;
977 idx ++;
978 }
979
980 if (size) {
981 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
982 readl(mmio + PDC_DIMM_WINDOW_CTLR);
983 memcpy_toio(dimm_mmio, psource, size / 4);
984 writel(0x01, mmio + PDC_GENERAL_CTLR);
985 readl(mmio + PDC_GENERAL_CTLR);
986 }
987 }
988
989
990 static unsigned int pdc20621_i2c_read(struct ata_probe_ent *pe, u32 device,
991 u32 subaddr, u32 *pdata)
992 {
993 void __iomem *mmio = pe->iomap[PDC_MMIO_BAR];
994 u32 i2creg = 0;
995 u32 status;
996 u32 count =0;
997
998 /* hard-code chip #0 */
999 mmio += PDC_CHIP0_OFS;
1000
1001 i2creg |= device << 24;
1002 i2creg |= subaddr << 16;
1003
1004 /* Set the device and subaddress */
1005 writel(i2creg, mmio + PDC_I2C_ADDR_DATA_OFFSET);
1006 readl(mmio + PDC_I2C_ADDR_DATA_OFFSET);
1007
1008 /* Write Control to perform read operation, mask int */
1009 writel(PDC_I2C_READ | PDC_I2C_START | PDC_I2C_MASK_INT,
1010 mmio + PDC_I2C_CONTROL_OFFSET);
1011
1012 for (count = 0; count <= 1000; count ++) {
1013 status = readl(mmio + PDC_I2C_CONTROL_OFFSET);
1014 if (status & PDC_I2C_COMPLETE) {
1015 status = readl(mmio + PDC_I2C_ADDR_DATA_OFFSET);
1016 break;
1017 } else if (count == 1000)
1018 return 0;
1019 }
1020
1021 *pdata = (status >> 8) & 0x000000ff;
1022 return 1;
1023 }
1024
1025
1026 static int pdc20621_detect_dimm(struct ata_probe_ent *pe)
1027 {
1028 u32 data=0 ;
1029 if (pdc20621_i2c_read(pe, PDC_DIMM0_SPD_DEV_ADDRESS,
1030 PDC_DIMM_SPD_SYSTEM_FREQ, &data)) {
1031 if (data == 100)
1032 return 100;
1033 } else
1034 return 0;
1035
1036 if (pdc20621_i2c_read(pe, PDC_DIMM0_SPD_DEV_ADDRESS, 9, &data)) {
1037 if(data <= 0x75)
1038 return 133;
1039 } else
1040 return 0;
1041
1042 return 0;
1043 }
1044
1045
1046 static int pdc20621_prog_dimm0(struct ata_probe_ent *pe)
1047 {
1048 u32 spd0[50];
1049 u32 data = 0;
1050 int size, i;
1051 u8 bdimmsize;
1052 void __iomem *mmio = pe->iomap[PDC_MMIO_BAR];
1053 static const struct {
1054 unsigned int reg;
1055 unsigned int ofs;
1056 } pdc_i2c_read_data [] = {
1057 { PDC_DIMM_SPD_TYPE, 11 },
1058 { PDC_DIMM_SPD_FRESH_RATE, 12 },
1059 { PDC_DIMM_SPD_COLUMN_NUM, 4 },
1060 { PDC_DIMM_SPD_ATTRIBUTE, 21 },
1061 { PDC_DIMM_SPD_ROW_NUM, 3 },
1062 { PDC_DIMM_SPD_BANK_NUM, 17 },
1063 { PDC_DIMM_SPD_MODULE_ROW, 5 },
1064 { PDC_DIMM_SPD_ROW_PRE_CHARGE, 27 },
1065 { PDC_DIMM_SPD_ROW_ACTIVE_DELAY, 28 },
1066 { PDC_DIMM_SPD_RAS_CAS_DELAY, 29 },
1067 { PDC_DIMM_SPD_ACTIVE_PRECHARGE, 30 },
1068 { PDC_DIMM_SPD_CAS_LATENCY, 18 },
1069 };
1070
1071 /* hard-code chip #0 */
1072 mmio += PDC_CHIP0_OFS;
1073
1074 for(i=0; i<ARRAY_SIZE(pdc_i2c_read_data); i++)
1075 pdc20621_i2c_read(pe, PDC_DIMM0_SPD_DEV_ADDRESS,
1076 pdc_i2c_read_data[i].reg,
1077 &spd0[pdc_i2c_read_data[i].ofs]);
1078
1079 data |= (spd0[4] - 8) | ((spd0[21] != 0) << 3) | ((spd0[3]-11) << 4);
1080 data |= ((spd0[17] / 4) << 6) | ((spd0[5] / 2) << 7) |
1081 ((((spd0[27] + 9) / 10) - 1) << 8) ;
1082 data |= (((((spd0[29] > spd0[28])
1083 ? spd0[29] : spd0[28]) + 9) / 10) - 1) << 10;
1084 data |= ((spd0[30] - spd0[29] + 9) / 10 - 2) << 12;
1085
1086 if (spd0[18] & 0x08)
1087 data |= ((0x03) << 14);
1088 else if (spd0[18] & 0x04)
1089 data |= ((0x02) << 14);
1090 else if (spd0[18] & 0x01)
1091 data |= ((0x01) << 14);
1092 else
1093 data |= (0 << 14);
1094
1095 /*
1096 Calculate the size of bDIMMSize (power of 2) and
1097 merge the DIMM size by program start/end address.
1098 */
1099
1100 bdimmsize = spd0[4] + (spd0[5] / 2) + spd0[3] + (spd0[17] / 2) + 3;
1101 size = (1 << bdimmsize) >> 20; /* size = xxx(MB) */
1102 data |= (((size / 16) - 1) << 16);
1103 data |= (0 << 23);
1104 data |= 8;
1105 writel(data, mmio + PDC_DIMM0_CONTROL_OFFSET);
1106 readl(mmio + PDC_DIMM0_CONTROL_OFFSET);
1107 return size;
1108 }
1109
1110
1111 static unsigned int pdc20621_prog_dimm_global(struct ata_probe_ent *pe)
1112 {
1113 u32 data, spd0;
1114 int error, i;
1115 void __iomem *mmio = pe->iomap[PDC_MMIO_BAR];
1116
1117 /* hard-code chip #0 */
1118 mmio += PDC_CHIP0_OFS;
1119
1120 /*
1121 Set To Default : DIMM Module Global Control Register (0x022259F1)
1122 DIMM Arbitration Disable (bit 20)
1123 DIMM Data/Control Output Driving Selection (bit12 - bit15)
1124 Refresh Enable (bit 17)
1125 */
1126
1127 data = 0x022259F1;
1128 writel(data, mmio + PDC_SDRAM_CONTROL_OFFSET);
1129 readl(mmio + PDC_SDRAM_CONTROL_OFFSET);
1130
1131 /* Turn on for ECC */
1132 pdc20621_i2c_read(pe, PDC_DIMM0_SPD_DEV_ADDRESS,
1133 PDC_DIMM_SPD_TYPE, &spd0);
1134 if (spd0 == 0x02) {
1135 data |= (0x01 << 16);
1136 writel(data, mmio + PDC_SDRAM_CONTROL_OFFSET);
1137 readl(mmio + PDC_SDRAM_CONTROL_OFFSET);
1138 printk(KERN_ERR "Local DIMM ECC Enabled\n");
1139 }
1140
1141 /* DIMM Initialization Select/Enable (bit 18/19) */
1142 data &= (~(1<<18));
1143 data |= (1<<19);
1144 writel(data, mmio + PDC_SDRAM_CONTROL_OFFSET);
1145
1146 error = 1;
1147 for (i = 1; i <= 10; i++) { /* polling ~5 secs */
1148 data = readl(mmio + PDC_SDRAM_CONTROL_OFFSET);
1149 if (!(data & (1<<19))) {
1150 error = 0;
1151 break;
1152 }
1153 msleep(i*100);
1154 }
1155 return error;
1156 }
1157
1158
1159 static unsigned int pdc20621_dimm_init(struct ata_probe_ent *pe)
1160 {
1161 int speed, size, length;
1162 u32 addr,spd0,pci_status;
1163 u32 tmp=0;
1164 u32 time_period=0;
1165 u32 tcount=0;
1166 u32 ticks=0;
1167 u32 clock=0;
1168 u32 fparam=0;
1169 void __iomem *mmio = pe->iomap[PDC_MMIO_BAR];
1170
1171 /* hard-code chip #0 */
1172 mmio += PDC_CHIP0_OFS;
1173
1174 /* Initialize PLL based upon PCI Bus Frequency */
1175
1176 /* Initialize Time Period Register */
1177 writel(0xffffffff, mmio + PDC_TIME_PERIOD);
1178 time_period = readl(mmio + PDC_TIME_PERIOD);
1179 VPRINTK("Time Period Register (0x40): 0x%x\n", time_period);
1180
1181 /* Enable timer */
1182 writel(0x00001a0, mmio + PDC_TIME_CONTROL);
1183 readl(mmio + PDC_TIME_CONTROL);
1184
1185 /* Wait 3 seconds */
1186 msleep(3000);
1187
1188 /*
1189 When timer is enabled, counter is decreased every internal
1190 clock cycle.
1191 */
1192
1193 tcount = readl(mmio + PDC_TIME_COUNTER);
1194 VPRINTK("Time Counter Register (0x44): 0x%x\n", tcount);
1195
1196 /*
1197 If SX4 is on PCI-X bus, after 3 seconds, the timer counter
1198 register should be >= (0xffffffff - 3x10^8).
1199 */
1200 if(tcount >= PCI_X_TCOUNT) {
1201 ticks = (time_period - tcount);
1202 VPRINTK("Num counters 0x%x (%d)\n", ticks, ticks);
1203
1204 clock = (ticks / 300000);
1205 VPRINTK("10 * Internal clk = 0x%x (%d)\n", clock, clock);
1206
1207 clock = (clock * 33);
1208 VPRINTK("10 * Internal clk * 33 = 0x%x (%d)\n", clock, clock);
1209
1210 /* PLL F Param (bit 22:16) */
1211 fparam = (1400000 / clock) - 2;
1212 VPRINTK("PLL F Param: 0x%x (%d)\n", fparam, fparam);
1213
1214 /* OD param = 0x2 (bit 31:30), R param = 0x5 (bit 29:25) */
1215 pci_status = (0x8a001824 | (fparam << 16));
1216 } else
1217 pci_status = PCI_PLL_INIT;
1218
1219 /* Initialize PLL. */
1220 VPRINTK("pci_status: 0x%x\n", pci_status);
1221 writel(pci_status, mmio + PDC_CTL_STATUS);
1222 readl(mmio + PDC_CTL_STATUS);
1223
1224 /*
1225 Read SPD of DIMM by I2C interface,
1226 and program the DIMM Module Controller.
1227 */
1228 if (!(speed = pdc20621_detect_dimm(pe))) {
1229 printk(KERN_ERR "Detect Local DIMM Fail\n");
1230 return 1; /* DIMM error */
1231 }
1232 VPRINTK("Local DIMM Speed = %d\n", speed);
1233
1234 /* Programming DIMM0 Module Control Register (index_CID0:80h) */
1235 size = pdc20621_prog_dimm0(pe);
1236 VPRINTK("Local DIMM Size = %dMB\n",size);
1237
1238 /* Programming DIMM Module Global Control Register (index_CID0:88h) */
1239 if (pdc20621_prog_dimm_global(pe)) {
1240 printk(KERN_ERR "Programming DIMM Module Global Control Register Fail\n");
1241 return 1;
1242 }
1243
1244 #ifdef ATA_VERBOSE_DEBUG
1245 {
1246 u8 test_parttern1[40] = {0x55,0xAA,'P','r','o','m','i','s','e',' ',
1247 'N','o','t',' ','Y','e','t',' ','D','e','f','i','n','e','d',' ',
1248 '1','.','1','0',
1249 '9','8','0','3','1','6','1','2',0,0};
1250 u8 test_parttern2[40] = {0};
1251
1252 pdc20621_put_to_dimm(pe, (void *) test_parttern2, 0x10040, 40);
1253 pdc20621_put_to_dimm(pe, (void *) test_parttern2, 0x40, 40);
1254
1255 pdc20621_put_to_dimm(pe, (void *) test_parttern1, 0x10040, 40);
1256 pdc20621_get_from_dimm(pe, (void *) test_parttern2, 0x40, 40);
1257 printk(KERN_ERR "%x, %x, %s\n", test_parttern2[0],
1258 test_parttern2[1], &(test_parttern2[2]));
1259 pdc20621_get_from_dimm(pe, (void *) test_parttern2, 0x10040,
1260 40);
1261 printk(KERN_ERR "%x, %x, %s\n", test_parttern2[0],
1262 test_parttern2[1], &(test_parttern2[2]));
1263
1264 pdc20621_put_to_dimm(pe, (void *) test_parttern1, 0x40, 40);
1265 pdc20621_get_from_dimm(pe, (void *) test_parttern2, 0x40, 40);
1266 printk(KERN_ERR "%x, %x, %s\n", test_parttern2[0],
1267 test_parttern2[1], &(test_parttern2[2]));
1268 }
1269 #endif
1270
1271 /* ECC initiliazation. */
1272
1273 pdc20621_i2c_read(pe, PDC_DIMM0_SPD_DEV_ADDRESS,
1274 PDC_DIMM_SPD_TYPE, &spd0);
1275 if (spd0 == 0x02) {
1276 VPRINTK("Start ECC initialization\n");
1277 addr = 0;
1278 length = size * 1024 * 1024;
1279 while (addr < length) {
1280 pdc20621_put_to_dimm(pe, (void *) &tmp, addr,
1281 sizeof(u32));
1282 addr += sizeof(u32);
1283 }
1284 VPRINTK("Finish ECC initialization\n");
1285 }
1286 return 0;
1287 }
1288
1289
1290 static void pdc_20621_init(struct ata_probe_ent *pe)
1291 {
1292 u32 tmp;
1293 void __iomem *mmio = pe->iomap[PDC_MMIO_BAR];
1294
1295 /* hard-code chip #0 */
1296 mmio += PDC_CHIP0_OFS;
1297
1298 /*
1299 * Select page 0x40 for our 32k DIMM window
1300 */
1301 tmp = readl(mmio + PDC_20621_DIMM_WINDOW) & 0xffff0000;
1302 tmp |= PDC_PAGE_WINDOW; /* page 40h; arbitrarily selected */
1303 writel(tmp, mmio + PDC_20621_DIMM_WINDOW);
1304
1305 /*
1306 * Reset Host DMA
1307 */
1308 tmp = readl(mmio + PDC_HDMA_CTLSTAT);
1309 tmp |= PDC_RESET;
1310 writel(tmp, mmio + PDC_HDMA_CTLSTAT);
1311 readl(mmio + PDC_HDMA_CTLSTAT); /* flush */
1312
1313 udelay(10);
1314
1315 tmp = readl(mmio + PDC_HDMA_CTLSTAT);
1316 tmp &= ~PDC_RESET;
1317 writel(tmp, mmio + PDC_HDMA_CTLSTAT);
1318 readl(mmio + PDC_HDMA_CTLSTAT); /* flush */
1319 }
1320
1321 static int pdc_sata_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
1322 {
1323 static int printed_version;
1324 struct ata_probe_ent *probe_ent;
1325 void __iomem *base;
1326 struct pdc_host_priv *hpriv;
1327 unsigned int board_idx = (unsigned int) ent->driver_data;
1328 int rc;
1329
1330 if (!printed_version++)
1331 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
1332
1333 rc = pcim_enable_device(pdev);
1334 if (rc)
1335 return rc;
1336
1337 rc = pcim_iomap_regions(pdev, (1 << PDC_MMIO_BAR) | (1 << PDC_DIMM_BAR),
1338 DRV_NAME);
1339 if (rc == -EBUSY)
1340 pcim_pin_device(pdev);
1341 if (rc)
1342 return rc;
1343
1344 rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
1345 if (rc)
1346 return rc;
1347 rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
1348 if (rc)
1349 return rc;
1350
1351 probe_ent = devm_kzalloc(&pdev->dev, sizeof(*probe_ent), GFP_KERNEL);
1352 if (probe_ent == NULL)
1353 return -ENOMEM;
1354
1355 probe_ent->dev = pci_dev_to_dev(pdev);
1356 INIT_LIST_HEAD(&probe_ent->node);
1357
1358 hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL);
1359 if (!hpriv)
1360 return -ENOMEM;
1361
1362 probe_ent->sht = pdc_port_info[board_idx].sht;
1363 probe_ent->port_flags = pdc_port_info[board_idx].flags;
1364 probe_ent->pio_mask = pdc_port_info[board_idx].pio_mask;
1365 probe_ent->mwdma_mask = pdc_port_info[board_idx].mwdma_mask;
1366 probe_ent->udma_mask = pdc_port_info[board_idx].udma_mask;
1367 probe_ent->port_ops = pdc_port_info[board_idx].port_ops;
1368
1369 probe_ent->irq = pdev->irq;
1370 probe_ent->irq_flags = IRQF_SHARED;
1371 probe_ent->iomap = pcim_iomap_table(pdev);
1372
1373 probe_ent->private_data = hpriv;
1374 base = probe_ent->iomap[PDC_MMIO_BAR] + PDC_CHIP0_OFS;
1375
1376 probe_ent->n_ports = 4;
1377 pdc_sata_setup_port(&probe_ent->port[0], base + 0x200);
1378 pdc_sata_setup_port(&probe_ent->port[1], base + 0x280);
1379 pdc_sata_setup_port(&probe_ent->port[2], base + 0x300);
1380 pdc_sata_setup_port(&probe_ent->port[3], base + 0x380);
1381
1382 pci_set_master(pdev);
1383
1384 /* initialize adapter */
1385 /* initialize local dimm */
1386 if (pdc20621_dimm_init(probe_ent))
1387 return -ENOMEM;
1388 pdc_20621_init(probe_ent);
1389
1390 if (!ata_device_add(probe_ent))
1391 return -ENODEV;
1392
1393 devm_kfree(&pdev->dev, probe_ent);
1394 return 0;
1395 }
1396
1397
1398 static int __init pdc_sata_init(void)
1399 {
1400 return pci_register_driver(&pdc_sata_pci_driver);
1401 }
1402
1403
1404 static void __exit pdc_sata_exit(void)
1405 {
1406 pci_unregister_driver(&pdc_sata_pci_driver);
1407 }
1408
1409
1410 MODULE_AUTHOR("Jeff Garzik");
1411 MODULE_DESCRIPTION("Promise SATA low-level driver");
1412 MODULE_LICENSE("GPL");
1413 MODULE_DEVICE_TABLE(pci, pdc_sata_pci_tbl);
1414 MODULE_VERSION(DRV_VERSION);
1415
1416 module_init(pdc_sata_init);
1417 module_exit(pdc_sata_exit);
Support for the Chinese Samsung S3C2440 based development boards