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libata: irq-pio build fixes
[linux-2.6/zen-sources.git] / drivers / scsi / sata_sx4.c
blob60ebe5ce32c4083a223f32563d36f0abe8d55c6c
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/sched.h>
41 #include <linux/device.h>
42 #include <scsi/scsi_host.h>
43 #include <scsi/scsi_cmnd.h>
44 #include <linux/libata.h>
45 #include <asm/io.h>
46 #include "sata_promise.h"
47
48 #define DRV_NAME "sata_sx4"
49 #define DRV_VERSION "0.8"
50
51
52 enum {
53 PDC_PRD_TBL = 0x44, /* Direct command DMA table addr */
54
55 PDC_PKT_SUBMIT = 0x40, /* Command packet pointer addr */
56 PDC_HDMA_PKT_SUBMIT = 0x100, /* Host DMA packet pointer addr */
57 PDC_INT_SEQMASK = 0x40, /* Mask of asserted SEQ INTs */
58 PDC_HDMA_CTLSTAT = 0x12C, /* Host DMA control / status */
59
60 PDC_20621_SEQCTL = 0x400,
61 PDC_20621_SEQMASK = 0x480,
62 PDC_20621_GENERAL_CTL = 0x484,
63 PDC_20621_PAGE_SIZE = (32 * 1024),
64
65 /* chosen, not constant, values; we design our own DIMM mem map */
66 PDC_20621_DIMM_WINDOW = 0x0C, /* page# for 32K DIMM window */
67 PDC_20621_DIMM_BASE = 0x00200000,
68 PDC_20621_DIMM_DATA = (64 * 1024),
69 PDC_DIMM_DATA_STEP = (256 * 1024),
70 PDC_DIMM_WINDOW_STEP = (8 * 1024),
71 PDC_DIMM_HOST_PRD = (6 * 1024),
72 PDC_DIMM_HOST_PKT = (128 * 0),
73 PDC_DIMM_HPKT_PRD = (128 * 1),
74 PDC_DIMM_ATA_PKT = (128 * 2),
75 PDC_DIMM_APKT_PRD = (128 * 3),
76 PDC_DIMM_HEADER_SZ = PDC_DIMM_APKT_PRD + 128,
77 PDC_PAGE_WINDOW = 0x40,
78 PDC_PAGE_DATA = PDC_PAGE_WINDOW +
79 (PDC_20621_DIMM_DATA / PDC_20621_PAGE_SIZE),
80 PDC_PAGE_SET = PDC_DIMM_DATA_STEP / PDC_20621_PAGE_SIZE,
81
82 PDC_CHIP0_OFS = 0xC0000, /* offset of chip #0 */
83
84 PDC_20621_ERR_MASK = (1<<19) | (1<<20) | (1<<21) | (1<<22) |
85 (1<<23),
86
87 board_20621 = 0, /* FastTrak S150 SX4 */
88
89 PDC_RESET = (1 << 11), /* HDMA reset */
90
91 PDC_MAX_HDMA = 32,
92 PDC_HDMA_Q_MASK = (PDC_MAX_HDMA - 1),
93
94 PDC_DIMM0_SPD_DEV_ADDRESS = 0x50,
95 PDC_DIMM1_SPD_DEV_ADDRESS = 0x51,
96 PDC_MAX_DIMM_MODULE = 0x02,
97 PDC_I2C_CONTROL_OFFSET = 0x48,
98 PDC_I2C_ADDR_DATA_OFFSET = 0x4C,
99 PDC_DIMM0_CONTROL_OFFSET = 0x80,
100 PDC_DIMM1_CONTROL_OFFSET = 0x84,
101 PDC_SDRAM_CONTROL_OFFSET = 0x88,
102 PDC_I2C_WRITE = 0x00000000,
103 PDC_I2C_READ = 0x00000040,
104 PDC_I2C_START = 0x00000080,
105 PDC_I2C_MASK_INT = 0x00000020,
106 PDC_I2C_COMPLETE = 0x00010000,
107 PDC_I2C_NO_ACK = 0x00100000,
108 PDC_DIMM_SPD_SUBADDRESS_START = 0x00,
109 PDC_DIMM_SPD_SUBADDRESS_END = 0x7F,
110 PDC_DIMM_SPD_ROW_NUM = 3,
111 PDC_DIMM_SPD_COLUMN_NUM = 4,
112 PDC_DIMM_SPD_MODULE_ROW = 5,
113 PDC_DIMM_SPD_TYPE = 11,
114 PDC_DIMM_SPD_FRESH_RATE = 12,
115 PDC_DIMM_SPD_BANK_NUM = 17,
116 PDC_DIMM_SPD_CAS_LATENCY = 18,
117 PDC_DIMM_SPD_ATTRIBUTE = 21,
118 PDC_DIMM_SPD_ROW_PRE_CHARGE = 27,
119 PDC_DIMM_SPD_ROW_ACTIVE_DELAY = 28,
120 PDC_DIMM_SPD_RAS_CAS_DELAY = 29,
121 PDC_DIMM_SPD_ACTIVE_PRECHARGE = 30,
122 PDC_DIMM_SPD_SYSTEM_FREQ = 126,
123 PDC_CTL_STATUS = 0x08,
124 PDC_DIMM_WINDOW_CTLR = 0x0C,
125 PDC_TIME_CONTROL = 0x3C,
126 PDC_TIME_PERIOD = 0x40,
127 PDC_TIME_COUNTER = 0x44,
128 PDC_GENERAL_CTLR = 0x484,
129 PCI_PLL_INIT = 0x8A531824,
130 PCI_X_TCOUNT = 0xEE1E5CFF
131 };
132
133
134 struct pdc_port_priv {
135 u8 dimm_buf[(ATA_PRD_SZ * ATA_MAX_PRD) + 512];
136 u8 *pkt;
137 dma_addr_t pkt_dma;
138 };
139
140 struct pdc_host_priv {
141 void __iomem *dimm_mmio;
142
143 unsigned int doing_hdma;
144 unsigned int hdma_prod;
145 unsigned int hdma_cons;
146 struct {
147 struct ata_queued_cmd *qc;
148 unsigned int seq;
149 unsigned long pkt_ofs;
150 } hdma[32];
151 };
152
153
154 static int pdc_sata_init_one (struct pci_dev *pdev, const struct pci_device_id *ent);
155 static irqreturn_t pdc20621_interrupt (int irq, void *dev_instance, struct pt_regs *regs);
156 static void pdc_eng_timeout(struct ata_port *ap);
157 static void pdc_20621_phy_reset (struct ata_port *ap);
158 static int pdc_port_start(struct ata_port *ap);
159 static void pdc_port_stop(struct ata_port *ap);
160 static void pdc20621_qc_prep(struct ata_queued_cmd *qc);
161 static void pdc_tf_load_mmio(struct ata_port *ap, const struct ata_taskfile *tf);
162 static void pdc_exec_command_mmio(struct ata_port *ap, const struct ata_taskfile *tf);
163 static void pdc20621_host_stop(struct ata_host_set *host_set);
164 static unsigned int pdc20621_dimm_init(struct ata_probe_ent *pe);
165 static int pdc20621_detect_dimm(struct ata_probe_ent *pe);
166 static unsigned int pdc20621_i2c_read(struct ata_probe_ent *pe,
167 u32 device, u32 subaddr, u32 *pdata);
168 static int pdc20621_prog_dimm0(struct ata_probe_ent *pe);
169 static unsigned int pdc20621_prog_dimm_global(struct ata_probe_ent *pe);
170 #ifdef ATA_VERBOSE_DEBUG
171 static void pdc20621_get_from_dimm(struct ata_probe_ent *pe,
172 void *psource, u32 offset, u32 size);
173 #endif
174 static void pdc20621_put_to_dimm(struct ata_probe_ent *pe,
175 void *psource, u32 offset, u32 size);
176 static void pdc20621_irq_clear(struct ata_port *ap);
177 static unsigned int pdc20621_qc_issue_prot(struct ata_queued_cmd *qc);
178
179
180 static struct scsi_host_template pdc_sata_sht = {
181 .module = THIS_MODULE,
182 .name = DRV_NAME,
183 .ioctl = ata_scsi_ioctl,
184 .queuecommand = ata_scsi_queuecmd,
185 .eh_timed_out = ata_scsi_timed_out,
186 .eh_strategy_handler = ata_scsi_error,
187 .can_queue = ATA_DEF_QUEUE,
188 .this_id = ATA_SHT_THIS_ID,
189 .sg_tablesize = LIBATA_MAX_PRD,
190 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
191 .emulated = ATA_SHT_EMULATED,
192 .use_clustering = ATA_SHT_USE_CLUSTERING,
193 .proc_name = DRV_NAME,
194 .dma_boundary = ATA_DMA_BOUNDARY,
195 .slave_configure = ata_scsi_slave_config,
196 .bios_param = ata_std_bios_param,
197 };
198
199 static const struct ata_port_operations pdc_20621_ops = {
200 .port_disable = ata_port_disable,
201 .tf_load = pdc_tf_load_mmio,
202 .tf_read = ata_tf_read,
203 .check_status = ata_check_status,
204 .exec_command = pdc_exec_command_mmio,
205 .dev_select = ata_std_dev_select,
206 .phy_reset = pdc_20621_phy_reset,
207 .qc_prep = pdc20621_qc_prep,
208 .qc_issue = pdc20621_qc_issue_prot,
209 .eng_timeout = pdc_eng_timeout,
210 .irq_handler = pdc20621_interrupt,
211 .irq_clear = pdc20621_irq_clear,
212 .port_start = pdc_port_start,
213 .port_stop = pdc_port_stop,
214 .host_stop = pdc20621_host_stop,
215 };
216
217 static const struct ata_port_info pdc_port_info[] = {
218 /* board_20621 */
219 {
220 .sht = &pdc_sata_sht,
221 .host_flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
222 ATA_FLAG_SRST | ATA_FLAG_MMIO |
223 ATA_FLAG_PIO_POLLING,
224 .pio_mask = 0x1f, /* pio0-4 */
225 .mwdma_mask = 0x07, /* mwdma0-2 */
226 .udma_mask = 0x7f, /* udma0-6 ; FIXME */
227 .port_ops = &pdc_20621_ops,
228 },
229
230 };
231
232 static const struct pci_device_id pdc_sata_pci_tbl[] = {
233 { PCI_VENDOR_ID_PROMISE, 0x6622, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
234 board_20621 },
235 { } /* terminate list */
236 };
237
238
239 static struct pci_driver pdc_sata_pci_driver = {
240 .name = DRV_NAME,
241 .id_table = pdc_sata_pci_tbl,
242 .probe = pdc_sata_init_one,
243 .remove = ata_pci_remove_one,
244 };
245
246
247 static void pdc20621_host_stop(struct ata_host_set *host_set)
248 {
249 struct pci_dev *pdev = to_pci_dev(host_set->dev);
250 struct pdc_host_priv *hpriv = host_set->private_data;
251 void __iomem *dimm_mmio = hpriv->dimm_mmio;
252
253 pci_iounmap(pdev, dimm_mmio);
254 kfree(hpriv);
255
256 pci_iounmap(pdev, host_set->mmio_base);
257 }
258
259 static int pdc_port_start(struct ata_port *ap)
260 {
261 struct device *dev = ap->host_set->dev;
262 struct pdc_port_priv *pp;
263 int rc;
264
265 rc = ata_port_start(ap);
266 if (rc)
267 return rc;
268
269 pp = kmalloc(sizeof(*pp), GFP_KERNEL);
270 if (!pp) {
271 rc = -ENOMEM;
272 goto err_out;
273 }
274 memset(pp, 0, sizeof(*pp));
275
276 pp->pkt = dma_alloc_coherent(dev, 128, &pp->pkt_dma, GFP_KERNEL);
277 if (!pp->pkt) {
278 rc = -ENOMEM;
279 goto err_out_kfree;
280 }
281
282 ap->private_data = pp;
283
284 return 0;
285
286 err_out_kfree:
287 kfree(pp);
288 err_out:
289 ata_port_stop(ap);
290 return rc;
291 }
292
293
294 static void pdc_port_stop(struct ata_port *ap)
295 {
296 struct device *dev = ap->host_set->dev;
297 struct pdc_port_priv *pp = ap->private_data;
298
299 ap->private_data = NULL;
300 dma_free_coherent(dev, 128, pp->pkt, pp->pkt_dma);
301 kfree(pp);
302 ata_port_stop(ap);
303 }
304
305
306 static void pdc_20621_phy_reset (struct ata_port *ap)
307 {
308 VPRINTK("ENTER\n");
309 ap->cbl = ATA_CBL_SATA;
310 ata_port_probe(ap);
311 ata_bus_reset(ap);
312 }
313
314 static inline void pdc20621_ata_sg(struct ata_taskfile *tf, u8 *buf,
315 unsigned int portno,
316 unsigned int total_len)
317 {
318 u32 addr;
319 unsigned int dw = PDC_DIMM_APKT_PRD >> 2;
320 u32 *buf32 = (u32 *) buf;
321
322 /* output ATA packet S/G table */
323 addr = PDC_20621_DIMM_BASE + PDC_20621_DIMM_DATA +
324 (PDC_DIMM_DATA_STEP * portno);
325 VPRINTK("ATA sg addr 0x%x, %d\n", addr, addr);
326 buf32[dw] = cpu_to_le32(addr);
327 buf32[dw + 1] = cpu_to_le32(total_len | ATA_PRD_EOT);
328
329 VPRINTK("ATA PSG @ %x == (0x%x, 0x%x)\n",
330 PDC_20621_DIMM_BASE +
331 (PDC_DIMM_WINDOW_STEP * portno) +
332 PDC_DIMM_APKT_PRD,
333 buf32[dw], buf32[dw + 1]);
334 }
335
336 static inline void pdc20621_host_sg(struct ata_taskfile *tf, u8 *buf,
337 unsigned int portno,
338 unsigned int total_len)
339 {
340 u32 addr;
341 unsigned int dw = PDC_DIMM_HPKT_PRD >> 2;
342 u32 *buf32 = (u32 *) buf;
343
344 /* output Host DMA packet S/G table */
345 addr = PDC_20621_DIMM_BASE + PDC_20621_DIMM_DATA +
346 (PDC_DIMM_DATA_STEP * portno);
347
348 buf32[dw] = cpu_to_le32(addr);
349 buf32[dw + 1] = cpu_to_le32(total_len | ATA_PRD_EOT);
350
351 VPRINTK("HOST PSG @ %x == (0x%x, 0x%x)\n",
352 PDC_20621_DIMM_BASE +
353 (PDC_DIMM_WINDOW_STEP * portno) +
354 PDC_DIMM_HPKT_PRD,
355 buf32[dw], buf32[dw + 1]);
356 }
357
358 static inline unsigned int pdc20621_ata_pkt(struct ata_taskfile *tf,
359 unsigned int devno, u8 *buf,
360 unsigned int portno)
361 {
362 unsigned int i, dw;
363 u32 *buf32 = (u32 *) buf;
364 u8 dev_reg;
365
366 unsigned int dimm_sg = PDC_20621_DIMM_BASE +
367 (PDC_DIMM_WINDOW_STEP * portno) +
368 PDC_DIMM_APKT_PRD;
369 VPRINTK("ENTER, dimm_sg == 0x%x, %d\n", dimm_sg, dimm_sg);
370
371 i = PDC_DIMM_ATA_PKT;
372
373 /*
374 * Set up ATA packet
375 */
376 if ((tf->protocol == ATA_PROT_DMA) && (!(tf->flags & ATA_TFLAG_WRITE)))
377 buf[i++] = PDC_PKT_READ;
378 else if (tf->protocol == ATA_PROT_NODATA)
379 buf[i++] = PDC_PKT_NODATA;
380 else
381 buf[i++] = 0;
382 buf[i++] = 0; /* reserved */
383 buf[i++] = portno + 1; /* seq. id */
384 buf[i++] = 0xff; /* delay seq. id */
385
386 /* dimm dma S/G, and next-pkt */
387 dw = i >> 2;
388 if (tf->protocol == ATA_PROT_NODATA)
389 buf32[dw] = 0;
390 else
391 buf32[dw] = cpu_to_le32(dimm_sg);
392 buf32[dw + 1] = 0;
393 i += 8;
394
395 if (devno == 0)
396 dev_reg = ATA_DEVICE_OBS;
397 else
398 dev_reg = ATA_DEVICE_OBS | ATA_DEV1;
399
400 /* select device */
401 buf[i++] = (1 << 5) | PDC_PKT_CLEAR_BSY | ATA_REG_DEVICE;
402 buf[i++] = dev_reg;
403
404 /* device control register */
405 buf[i++] = (1 << 5) | PDC_REG_DEVCTL;
406 buf[i++] = tf->ctl;
407
408 return i;
409 }
410
411 static inline void pdc20621_host_pkt(struct ata_taskfile *tf, u8 *buf,
412 unsigned int portno)
413 {
414 unsigned int dw;
415 u32 tmp, *buf32 = (u32 *) buf;
416
417 unsigned int host_sg = PDC_20621_DIMM_BASE +
418 (PDC_DIMM_WINDOW_STEP * portno) +
419 PDC_DIMM_HOST_PRD;
420 unsigned int dimm_sg = PDC_20621_DIMM_BASE +
421 (PDC_DIMM_WINDOW_STEP * portno) +
422 PDC_DIMM_HPKT_PRD;
423 VPRINTK("ENTER, dimm_sg == 0x%x, %d\n", dimm_sg, dimm_sg);
424 VPRINTK("host_sg == 0x%x, %d\n", host_sg, host_sg);
425
426 dw = PDC_DIMM_HOST_PKT >> 2;
427
428 /*
429 * Set up Host DMA packet
430 */
431 if ((tf->protocol == ATA_PROT_DMA) && (!(tf->flags & ATA_TFLAG_WRITE)))
432 tmp = PDC_PKT_READ;
433 else
434 tmp = 0;
435 tmp |= ((portno + 1 + 4) << 16); /* seq. id */
436 tmp |= (0xff << 24); /* delay seq. id */
437 buf32[dw + 0] = cpu_to_le32(tmp);
438 buf32[dw + 1] = cpu_to_le32(host_sg);
439 buf32[dw + 2] = cpu_to_le32(dimm_sg);
440 buf32[dw + 3] = 0;
441
442 VPRINTK("HOST PKT @ %x == (0x%x 0x%x 0x%x 0x%x)\n",
443 PDC_20621_DIMM_BASE + (PDC_DIMM_WINDOW_STEP * portno) +
444 PDC_DIMM_HOST_PKT,
445 buf32[dw + 0],
446 buf32[dw + 1],
447 buf32[dw + 2],
448 buf32[dw + 3]);
449 }
450
451 static void pdc20621_dma_prep(struct ata_queued_cmd *qc)
452 {
453 struct scatterlist *sg;
454 struct ata_port *ap = qc->ap;
455 struct pdc_port_priv *pp = ap->private_data;
456 void __iomem *mmio = ap->host_set->mmio_base;
457 struct pdc_host_priv *hpriv = ap->host_set->private_data;
458 void __iomem *dimm_mmio = hpriv->dimm_mmio;
459 unsigned int portno = ap->port_no;
460 unsigned int i, idx, total_len = 0, sgt_len;
461 u32 *buf = (u32 *) &pp->dimm_buf[PDC_DIMM_HEADER_SZ];
462
463 WARN_ON(!(qc->flags & ATA_QCFLAG_DMAMAP));
464
465 VPRINTK("ata%u: ENTER\n", ap->id);
466
467 /* hard-code chip #0 */
468 mmio += PDC_CHIP0_OFS;
469
470 /*
471 * Build S/G table
472 */
473 idx = 0;
474 ata_for_each_sg(sg, qc) {
475 buf[idx++] = cpu_to_le32(sg_dma_address(sg));
476 buf[idx++] = cpu_to_le32(sg_dma_len(sg));
477 total_len += sg_dma_len(sg);
478 }
479 buf[idx - 1] |= cpu_to_le32(ATA_PRD_EOT);
480 sgt_len = idx * 4;
481
482 /*
483 * Build ATA, host DMA packets
484 */
485 pdc20621_host_sg(&qc->tf, &pp->dimm_buf[0], portno, total_len);
486 pdc20621_host_pkt(&qc->tf, &pp->dimm_buf[0], portno);
487
488 pdc20621_ata_sg(&qc->tf, &pp->dimm_buf[0], portno, total_len);
489 i = pdc20621_ata_pkt(&qc->tf, qc->dev->devno, &pp->dimm_buf[0], portno);
490
491 if (qc->tf.flags & ATA_TFLAG_LBA48)
492 i = pdc_prep_lba48(&qc->tf, &pp->dimm_buf[0], i);
493 else
494 i = pdc_prep_lba28(&qc->tf, &pp->dimm_buf[0], i);
495
496 pdc_pkt_footer(&qc->tf, &pp->dimm_buf[0], i);
497
498 /* copy three S/G tables and two packets to DIMM MMIO window */
499 memcpy_toio(dimm_mmio + (portno * PDC_DIMM_WINDOW_STEP),
500 &pp->dimm_buf, PDC_DIMM_HEADER_SZ);
501 memcpy_toio(dimm_mmio + (portno * PDC_DIMM_WINDOW_STEP) +
502 PDC_DIMM_HOST_PRD,
503 &pp->dimm_buf[PDC_DIMM_HEADER_SZ], sgt_len);
504
505 /* force host FIFO dump */
506 writel(0x00000001, mmio + PDC_20621_GENERAL_CTL);
507
508 readl(dimm_mmio); /* MMIO PCI posting flush */
509
510 VPRINTK("ata pkt buf ofs %u, prd size %u, mmio copied\n", i, sgt_len);
511 }
512
513 static void pdc20621_nodata_prep(struct ata_queued_cmd *qc)
514 {
515 struct ata_port *ap = qc->ap;
516 struct pdc_port_priv *pp = ap->private_data;
517 void __iomem *mmio = ap->host_set->mmio_base;
518 struct pdc_host_priv *hpriv = ap->host_set->private_data;
519 void __iomem *dimm_mmio = hpriv->dimm_mmio;
520 unsigned int portno = ap->port_no;
521 unsigned int i;
522
523 VPRINTK("ata%u: ENTER\n", ap->id);
524
525 /* hard-code chip #0 */
526 mmio += PDC_CHIP0_OFS;
527
528 i = pdc20621_ata_pkt(&qc->tf, qc->dev->devno, &pp->dimm_buf[0], portno);
529
530 if (qc->tf.flags & ATA_TFLAG_LBA48)
531 i = pdc_prep_lba48(&qc->tf, &pp->dimm_buf[0], i);
532 else
533 i = pdc_prep_lba28(&qc->tf, &pp->dimm_buf[0], i);
534
535 pdc_pkt_footer(&qc->tf, &pp->dimm_buf[0], i);
536
537 /* copy three S/G tables and two packets to DIMM MMIO window */
538 memcpy_toio(dimm_mmio + (portno * PDC_DIMM_WINDOW_STEP),
539 &pp->dimm_buf, PDC_DIMM_HEADER_SZ);
540
541 /* force host FIFO dump */
542 writel(0x00000001, mmio + PDC_20621_GENERAL_CTL);
543
544 readl(dimm_mmio); /* MMIO PCI posting flush */
545
546 VPRINTK("ata pkt buf ofs %u, mmio copied\n", i);
547 }
548
549 static void pdc20621_qc_prep(struct ata_queued_cmd *qc)
550 {
551 switch (qc->tf.protocol) {
552 case ATA_PROT_DMA:
553 pdc20621_dma_prep(qc);
554 break;
555 case ATA_PROT_NODATA:
556 pdc20621_nodata_prep(qc);
557 break;
558 default:
559 break;
560 }
561 }
562
563 static void __pdc20621_push_hdma(struct ata_queued_cmd *qc,
564 unsigned int seq,
565 u32 pkt_ofs)
566 {
567 struct ata_port *ap = qc->ap;
568 struct ata_host_set *host_set = ap->host_set;
569 void __iomem *mmio = host_set->mmio_base;
570
571 /* hard-code chip #0 */
572 mmio += PDC_CHIP0_OFS;
573
574 writel(0x00000001, mmio + PDC_20621_SEQCTL + (seq * 4));
575 readl(mmio + PDC_20621_SEQCTL + (seq * 4)); /* flush */
576
577 writel(pkt_ofs, mmio + PDC_HDMA_PKT_SUBMIT);
578 readl(mmio + PDC_HDMA_PKT_SUBMIT); /* flush */
579 }
580
581 static void pdc20621_push_hdma(struct ata_queued_cmd *qc,
582 unsigned int seq,
583 u32 pkt_ofs)
584 {
585 struct ata_port *ap = qc->ap;
586 struct pdc_host_priv *pp = ap->host_set->private_data;
587 unsigned int idx = pp->hdma_prod & PDC_HDMA_Q_MASK;
588
589 if (!pp->doing_hdma) {
590 __pdc20621_push_hdma(qc, seq, pkt_ofs);
591 pp->doing_hdma = 1;
592 return;
593 }
594
595 pp->hdma[idx].qc = qc;
596 pp->hdma[idx].seq = seq;
597 pp->hdma[idx].pkt_ofs = pkt_ofs;
598 pp->hdma_prod++;
599 }
600
601 static void pdc20621_pop_hdma(struct ata_queued_cmd *qc)
602 {
603 struct ata_port *ap = qc->ap;
604 struct pdc_host_priv *pp = ap->host_set->private_data;
605 unsigned int idx = pp->hdma_cons & PDC_HDMA_Q_MASK;
606
607 /* if nothing on queue, we're done */
608 if (pp->hdma_prod == pp->hdma_cons) {
609 pp->doing_hdma = 0;
610 return;
611 }
612
613 __pdc20621_push_hdma(pp->hdma[idx].qc, pp->hdma[idx].seq,
614 pp->hdma[idx].pkt_ofs);
615 pp->hdma_cons++;
616 }
617
618 #ifdef ATA_VERBOSE_DEBUG
619 static void pdc20621_dump_hdma(struct ata_queued_cmd *qc)
620 {
621 struct ata_port *ap = qc->ap;
622 unsigned int port_no = ap->port_no;
623 struct pdc_host_priv *hpriv = ap->host_set->private_data;
624 void *dimm_mmio = hpriv->dimm_mmio;
625
626 dimm_mmio += (port_no * PDC_DIMM_WINDOW_STEP);
627 dimm_mmio += PDC_DIMM_HOST_PKT;
628
629 printk(KERN_ERR "HDMA[0] == 0x%08X\n", readl(dimm_mmio));
630 printk(KERN_ERR "HDMA[1] == 0x%08X\n", readl(dimm_mmio + 4));
631 printk(KERN_ERR "HDMA[2] == 0x%08X\n", readl(dimm_mmio + 8));
632 printk(KERN_ERR "HDMA[3] == 0x%08X\n", readl(dimm_mmio + 12));
633 }
634 #else
635 static inline void pdc20621_dump_hdma(struct ata_queued_cmd *qc) { }
636 #endif /* ATA_VERBOSE_DEBUG */
637
638 static void pdc20621_packet_start(struct ata_queued_cmd *qc)
639 {
640 struct ata_port *ap = qc->ap;
641 struct ata_host_set *host_set = ap->host_set;
642 unsigned int port_no = ap->port_no;
643 void __iomem *mmio = host_set->mmio_base;
644 unsigned int rw = (qc->tf.flags & ATA_TFLAG_WRITE);
645 u8 seq = (u8) (port_no + 1);
646 unsigned int port_ofs;
647
648 /* hard-code chip #0 */
649 mmio += PDC_CHIP0_OFS;
650
651 VPRINTK("ata%u: ENTER\n", ap->id);
652
653 wmb(); /* flush PRD, pkt writes */
654
655 port_ofs = PDC_20621_DIMM_BASE + (PDC_DIMM_WINDOW_STEP * port_no);
656
657 /* if writing, we (1) DMA to DIMM, then (2) do ATA command */
658 if (rw && qc->tf.protocol == ATA_PROT_DMA) {
659 seq += 4;
660
661 pdc20621_dump_hdma(qc);
662 pdc20621_push_hdma(qc, seq, port_ofs + PDC_DIMM_HOST_PKT);
663 VPRINTK("queued ofs 0x%x (%u), seq %u\n",
664 port_ofs + PDC_DIMM_HOST_PKT,
665 port_ofs + PDC_DIMM_HOST_PKT,
666 seq);
667 } else {
668 writel(0x00000001, mmio + PDC_20621_SEQCTL + (seq * 4));
669 readl(mmio + PDC_20621_SEQCTL + (seq * 4)); /* flush */
670
671 writel(port_ofs + PDC_DIMM_ATA_PKT,
672 (void __iomem *) ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT);
673 readl((void __iomem *) ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT);
674 VPRINTK("submitted ofs 0x%x (%u), seq %u\n",
675 port_ofs + PDC_DIMM_ATA_PKT,
676 port_ofs + PDC_DIMM_ATA_PKT,
677 seq);
678 }
679 }
680
681 static unsigned int pdc20621_qc_issue_prot(struct ata_queued_cmd *qc)
682 {
683 switch (qc->tf.protocol) {
684 case ATA_PROT_DMA:
685 case ATA_PROT_NODATA:
686 pdc20621_packet_start(qc);
687 return 0;
688
689 case ATA_PROT_ATAPI_DMA:
690 BUG();
691 break;
692
693 default:
694 break;
695 }
696
697 return ata_qc_issue_prot(qc);
698 }
699
700 static inline unsigned int pdc20621_host_intr( struct ata_port *ap,
701 struct ata_queued_cmd *qc,
702 unsigned int doing_hdma,
703 void __iomem *mmio)
704 {
705 unsigned int port_no = ap->port_no;
706 unsigned int port_ofs =
707 PDC_20621_DIMM_BASE + (PDC_DIMM_WINDOW_STEP * port_no);
708 u8 status;
709 unsigned int handled = 0;
710
711 VPRINTK("ENTER\n");
712
713 if ((qc->tf.protocol == ATA_PROT_DMA) && /* read */
714 (!(qc->tf.flags & ATA_TFLAG_WRITE))) {
715
716 /* step two - DMA from DIMM to host */
717 if (doing_hdma) {
718 VPRINTK("ata%u: read hdma, 0x%x 0x%x\n", ap->id,
719 readl(mmio + 0x104), readl(mmio + PDC_HDMA_CTLSTAT));
720 /* get drive status; clear intr; complete txn */
721 qc->err_mask |= ac_err_mask(ata_wait_idle(ap));
722 ata_qc_complete(qc);
723 pdc20621_pop_hdma(qc);
724 }
725
726 /* step one - exec ATA command */
727 else {
728 u8 seq = (u8) (port_no + 1 + 4);
729 VPRINTK("ata%u: read ata, 0x%x 0x%x\n", ap->id,
730 readl(mmio + 0x104), readl(mmio + PDC_HDMA_CTLSTAT));
731
732 /* submit hdma pkt */
733 pdc20621_dump_hdma(qc);
734 pdc20621_push_hdma(qc, seq,
735 port_ofs + PDC_DIMM_HOST_PKT);
736 }
737 handled = 1;
738
739 } else if (qc->tf.protocol == ATA_PROT_DMA) { /* write */
740
741 /* step one - DMA from host to DIMM */
742 if (doing_hdma) {
743 u8 seq = (u8) (port_no + 1);
744 VPRINTK("ata%u: write hdma, 0x%x 0x%x\n", ap->id,
745 readl(mmio + 0x104), readl(mmio + PDC_HDMA_CTLSTAT));
746
747 /* submit ata pkt */
748 writel(0x00000001, mmio + PDC_20621_SEQCTL + (seq * 4));
749 readl(mmio + PDC_20621_SEQCTL + (seq * 4));
750 writel(port_ofs + PDC_DIMM_ATA_PKT,
751 (void __iomem *) ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT);
752 readl((void __iomem *) ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT);
753 }
754
755 /* step two - execute ATA command */
756 else {
757 VPRINTK("ata%u: write ata, 0x%x 0x%x\n", ap->id,
758 readl(mmio + 0x104), readl(mmio + PDC_HDMA_CTLSTAT));
759 /* get drive status; clear intr; complete txn */
760 qc->err_mask |= ac_err_mask(ata_wait_idle(ap));
761 ata_qc_complete(qc);
762 pdc20621_pop_hdma(qc);
763 }
764 handled = 1;
765
766 /* command completion, but no data xfer */
767 } else if (qc->tf.protocol == ATA_PROT_NODATA) {
768
769 status = ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
770 DPRINTK("BUS_NODATA (drv_stat 0x%X)\n", status);
771 qc->err_mask |= ac_err_mask(status);
772 ata_qc_complete(qc);
773 handled = 1;
774
775 } else {
776 ap->stats.idle_irq++;
777 }
778
779 return handled;
780 }
781
782 static void pdc20621_irq_clear(struct ata_port *ap)
783 {
784 struct ata_host_set *host_set = ap->host_set;
785 void __iomem *mmio = host_set->mmio_base;
786
787 mmio += PDC_CHIP0_OFS;
788
789 readl(mmio + PDC_20621_SEQMASK);
790 }
791
792 static irqreturn_t pdc20621_interrupt (int irq, void *dev_instance, struct pt_regs *regs)
793 {
794 struct ata_host_set *host_set = dev_instance;
795 struct ata_port *ap;
796 u32 mask = 0;
797 unsigned int i, tmp, port_no;
798 unsigned int handled = 0;
799 void __iomem *mmio_base;
800
801 VPRINTK("ENTER\n");
802
803 if (!host_set || !host_set->mmio_base) {
804 VPRINTK("QUICK EXIT\n");
805 return IRQ_NONE;
806 }
807
808 mmio_base = host_set->mmio_base;
809
810 /* reading should also clear interrupts */
811 mmio_base += PDC_CHIP0_OFS;
812 mask = readl(mmio_base + PDC_20621_SEQMASK);
813 VPRINTK("mask == 0x%x\n", mask);
814
815 if (mask == 0xffffffff) {
816 VPRINTK("QUICK EXIT 2\n");
817 return IRQ_NONE;
818 }
819 mask &= 0xffff; /* only 16 tags possible */
820 if (!mask) {
821 VPRINTK("QUICK EXIT 3\n");
822 return IRQ_NONE;
823 }
824
825 spin_lock(&host_set->lock);
826
827 for (i = 1; i < 9; i++) {
828 port_no = i - 1;
829 if (port_no > 3)
830 port_no -= 4;
831 if (port_no >= host_set->n_ports)
832 ap = NULL;
833 else
834 ap = host_set->ports[port_no];
835 tmp = mask & (1 << i);
836 VPRINTK("seq %u, port_no %u, ap %p, tmp %x\n", i, port_no, ap, tmp);
837 if (tmp && ap &&
838 !(ap->flags & ATA_FLAG_PORT_DISABLED)) {
839 struct ata_queued_cmd *qc;
840
841 qc = ata_qc_from_tag(ap, ap->active_tag);
842 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING)))
843 handled += pdc20621_host_intr(ap, qc, (i > 4),
844 mmio_base);
845 }
846 }
847
848 spin_unlock(&host_set->lock);
849
850 VPRINTK("mask == 0x%x\n", mask);
851
852 VPRINTK("EXIT\n");
853
854 return IRQ_RETVAL(handled);
855 }
856
857 static void pdc_eng_timeout(struct ata_port *ap)
858 {
859 u8 drv_stat;
860 struct ata_host_set *host_set = ap->host_set;
861 struct ata_queued_cmd *qc;
862 unsigned long flags;
863
864 DPRINTK("ENTER\n");
865
866 spin_lock_irqsave(&host_set->lock, flags);
867
868 qc = ata_qc_from_tag(ap, ap->active_tag);
869
870 switch (qc->tf.protocol) {
871 case ATA_PROT_DMA:
872 case ATA_PROT_NODATA:
873 printk(KERN_ERR "ata%u: command timeout\n", ap->id);
874 qc->err_mask |= __ac_err_mask(ata_wait_idle(ap));
875 break;
876
877 default:
878 drv_stat = ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
879
880 printk(KERN_ERR "ata%u: unknown timeout, cmd 0x%x stat 0x%x\n",
881 ap->id, qc->tf.command, drv_stat);
882
883 qc->err_mask |= ac_err_mask(drv_stat);
884 break;
885 }
886
887 spin_unlock_irqrestore(&host_set->lock, flags);
888 ata_eh_qc_complete(qc);
889 DPRINTK("EXIT\n");
890 }
891
892 static void pdc_tf_load_mmio(struct ata_port *ap, const struct ata_taskfile *tf)
893 {
894 WARN_ON (tf->protocol == ATA_PROT_DMA ||
895 tf->protocol == ATA_PROT_NODATA);
896 ata_tf_load(ap, tf);
897 }
898
899
900 static void pdc_exec_command_mmio(struct ata_port *ap, const struct ata_taskfile *tf)
901 {
902 WARN_ON (tf->protocol == ATA_PROT_DMA ||
903 tf->protocol == ATA_PROT_NODATA);
904 ata_exec_command(ap, tf);
905 }
906
907
908 static void pdc_sata_setup_port(struct ata_ioports *port, unsigned long base)
909 {
910 port->cmd_addr = base;
911 port->data_addr = base;
912 port->feature_addr =
913 port->error_addr = base + 0x4;
914 port->nsect_addr = base + 0x8;
915 port->lbal_addr = base + 0xc;
916 port->lbam_addr = base + 0x10;
917 port->lbah_addr = base + 0x14;
918 port->device_addr = base + 0x18;
919 port->command_addr =
920 port->status_addr = base + 0x1c;
921 port->altstatus_addr =
922 port->ctl_addr = base + 0x38;
923 }
924
925
926 #ifdef ATA_VERBOSE_DEBUG
927 static void pdc20621_get_from_dimm(struct ata_probe_ent *pe, void *psource,
928 u32 offset, u32 size)
929 {
930 u32 window_size;
931 u16 idx;
932 u8 page_mask;
933 long dist;
934 void __iomem *mmio = pe->mmio_base;
935 struct pdc_host_priv *hpriv = pe->private_data;
936 void __iomem *dimm_mmio = hpriv->dimm_mmio;
937
938 /* hard-code chip #0 */
939 mmio += PDC_CHIP0_OFS;
940
941 page_mask = 0x00;
942 window_size = 0x2000 * 4; /* 32K byte uchar size */
943 idx = (u16) (offset / window_size);
944
945 writel(0x01, mmio + PDC_GENERAL_CTLR);
946 readl(mmio + PDC_GENERAL_CTLR);
947 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
948 readl(mmio + PDC_DIMM_WINDOW_CTLR);
949
950 offset -= (idx * window_size);
951 idx++;
952 dist = ((long) (window_size - (offset + size))) >= 0 ? size :
953 (long) (window_size - offset);
954 memcpy_fromio((char *) psource, (char *) (dimm_mmio + offset / 4),
955 dist);
956
957 psource += dist;
958 size -= dist;
959 for (; (long) size >= (long) window_size ;) {
960 writel(0x01, mmio + PDC_GENERAL_CTLR);
961 readl(mmio + PDC_GENERAL_CTLR);
962 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
963 readl(mmio + PDC_DIMM_WINDOW_CTLR);
964 memcpy_fromio((char *) psource, (char *) (dimm_mmio),
965 window_size / 4);
966 psource += window_size;
967 size -= window_size;
968 idx ++;
969 }
970
971 if (size) {
972 writel(0x01, mmio + PDC_GENERAL_CTLR);
973 readl(mmio + PDC_GENERAL_CTLR);
974 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
975 readl(mmio + PDC_DIMM_WINDOW_CTLR);
976 memcpy_fromio((char *) psource, (char *) (dimm_mmio),
977 size / 4);
978 }
979 }
980 #endif
981
982
983 static void pdc20621_put_to_dimm(struct ata_probe_ent *pe, void *psource,
984 u32 offset, u32 size)
985 {
986 u32 window_size;
987 u16 idx;
988 u8 page_mask;
989 long dist;
990 void __iomem *mmio = pe->mmio_base;
991 struct pdc_host_priv *hpriv = pe->private_data;
992 void __iomem *dimm_mmio = hpriv->dimm_mmio;
993
994 /* hard-code chip #0 */
995 mmio += PDC_CHIP0_OFS;
996
997 page_mask = 0x00;
998 window_size = 0x2000 * 4; /* 32K byte uchar size */
999 idx = (u16) (offset / window_size);
1000
1001 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
1002 readl(mmio + PDC_DIMM_WINDOW_CTLR);
1003 offset -= (idx * window_size);
1004 idx++;
1005 dist = ((long)(s32)(window_size - (offset + size))) >= 0 ? size :
1006 (long) (window_size - offset);
1007 memcpy_toio(dimm_mmio + offset / 4, psource, dist);
1008 writel(0x01, mmio + PDC_GENERAL_CTLR);
1009 readl(mmio + PDC_GENERAL_CTLR);
1010
1011 psource += dist;
1012 size -= dist;
1013 for (; (long) size >= (long) window_size ;) {
1014 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
1015 readl(mmio + PDC_DIMM_WINDOW_CTLR);
1016 memcpy_toio(dimm_mmio, psource, window_size / 4);
1017 writel(0x01, mmio + PDC_GENERAL_CTLR);
1018 readl(mmio + PDC_GENERAL_CTLR);
1019 psource += window_size;
1020 size -= window_size;
1021 idx ++;
1022 }
1023
1024 if (size) {
1025 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
1026 readl(mmio + PDC_DIMM_WINDOW_CTLR);
1027 memcpy_toio(dimm_mmio, psource, size / 4);
1028 writel(0x01, mmio + PDC_GENERAL_CTLR);
1029 readl(mmio + PDC_GENERAL_CTLR);
1030 }
1031 }
1032
1033
1034 static unsigned int pdc20621_i2c_read(struct ata_probe_ent *pe, u32 device,
1035 u32 subaddr, u32 *pdata)
1036 {
1037 void __iomem *mmio = pe->mmio_base;
1038 u32 i2creg = 0;
1039 u32 status;
1040 u32 count =0;
1041
1042 /* hard-code chip #0 */
1043 mmio += PDC_CHIP0_OFS;
1044
1045 i2creg |= device << 24;
1046 i2creg |= subaddr << 16;
1047
1048 /* Set the device and subaddress */
1049 writel(i2creg, mmio + PDC_I2C_ADDR_DATA_OFFSET);
1050 readl(mmio + PDC_I2C_ADDR_DATA_OFFSET);
1051
1052 /* Write Control to perform read operation, mask int */
1053 writel(PDC_I2C_READ | PDC_I2C_START | PDC_I2C_MASK_INT,
1054 mmio + PDC_I2C_CONTROL_OFFSET);
1055
1056 for (count = 0; count <= 1000; count ++) {
1057 status = readl(mmio + PDC_I2C_CONTROL_OFFSET);
1058 if (status & PDC_I2C_COMPLETE) {
1059 status = readl(mmio + PDC_I2C_ADDR_DATA_OFFSET);
1060 break;
1061 } else if (count == 1000)
1062 return 0;
1063 }
1064
1065 *pdata = (status >> 8) & 0x000000ff;
1066 return 1;
1067 }
1068
1069
1070 static int pdc20621_detect_dimm(struct ata_probe_ent *pe)
1071 {
1072 u32 data=0 ;
1073 if (pdc20621_i2c_read(pe, PDC_DIMM0_SPD_DEV_ADDRESS,
1074 PDC_DIMM_SPD_SYSTEM_FREQ, &data)) {
1075 if (data == 100)
1076 return 100;
1077 } else
1078 return 0;
1079
1080 if (pdc20621_i2c_read(pe, PDC_DIMM0_SPD_DEV_ADDRESS, 9, &data)) {
1081 if(data <= 0x75)
1082 return 133;
1083 } else
1084 return 0;
1085
1086 return 0;
1087 }
1088
1089
1090 static int pdc20621_prog_dimm0(struct ata_probe_ent *pe)
1091 {
1092 u32 spd0[50];
1093 u32 data = 0;
1094 int size, i;
1095 u8 bdimmsize;
1096 void __iomem *mmio = pe->mmio_base;
1097 static const struct {
1098 unsigned int reg;
1099 unsigned int ofs;
1100 } pdc_i2c_read_data [] = {
1101 { PDC_DIMM_SPD_TYPE, 11 },
1102 { PDC_DIMM_SPD_FRESH_RATE, 12 },
1103 { PDC_DIMM_SPD_COLUMN_NUM, 4 },
1104 { PDC_DIMM_SPD_ATTRIBUTE, 21 },
1105 { PDC_DIMM_SPD_ROW_NUM, 3 },
1106 { PDC_DIMM_SPD_BANK_NUM, 17 },
1107 { PDC_DIMM_SPD_MODULE_ROW, 5 },
1108 { PDC_DIMM_SPD_ROW_PRE_CHARGE, 27 },
1109 { PDC_DIMM_SPD_ROW_ACTIVE_DELAY, 28 },
1110 { PDC_DIMM_SPD_RAS_CAS_DELAY, 29 },
1111 { PDC_DIMM_SPD_ACTIVE_PRECHARGE, 30 },
1112 { PDC_DIMM_SPD_CAS_LATENCY, 18 },
1113 };
1114
1115 /* hard-code chip #0 */
1116 mmio += PDC_CHIP0_OFS;
1117
1118 for(i=0; i<ARRAY_SIZE(pdc_i2c_read_data); i++)
1119 pdc20621_i2c_read(pe, PDC_DIMM0_SPD_DEV_ADDRESS,
1120 pdc_i2c_read_data[i].reg,
1121 &spd0[pdc_i2c_read_data[i].ofs]);
1122
1123 data |= (spd0[4] - 8) | ((spd0[21] != 0) << 3) | ((spd0[3]-11) << 4);
1124 data |= ((spd0[17] / 4) << 6) | ((spd0[5] / 2) << 7) |
1125 ((((spd0[27] + 9) / 10) - 1) << 8) ;
1126 data |= (((((spd0[29] > spd0[28])
1127 ? spd0[29] : spd0[28]) + 9) / 10) - 1) << 10;
1128 data |= ((spd0[30] - spd0[29] + 9) / 10 - 2) << 12;
1129
1130 if (spd0[18] & 0x08)
1131 data |= ((0x03) << 14);
1132 else if (spd0[18] & 0x04)
1133 data |= ((0x02) << 14);
1134 else if (spd0[18] & 0x01)
1135 data |= ((0x01) << 14);
1136 else
1137 data |= (0 << 14);
1138
1139 /*
1140 Calculate the size of bDIMMSize (power of 2) and
1141 merge the DIMM size by program start/end address.
1142 */
1143
1144 bdimmsize = spd0[4] + (spd0[5] / 2) + spd0[3] + (spd0[17] / 2) + 3;
1145 size = (1 << bdimmsize) >> 20; /* size = xxx(MB) */
1146 data |= (((size / 16) - 1) << 16);
1147 data |= (0 << 23);
1148 data |= 8;
1149 writel(data, mmio + PDC_DIMM0_CONTROL_OFFSET);
1150 readl(mmio + PDC_DIMM0_CONTROL_OFFSET);
1151 return size;
1152 }
1153
1154
1155 static unsigned int pdc20621_prog_dimm_global(struct ata_probe_ent *pe)
1156 {
1157 u32 data, spd0;
1158 int error, i;
1159 void __iomem *mmio = pe->mmio_base;
1160
1161 /* hard-code chip #0 */
1162 mmio += PDC_CHIP0_OFS;
1163
1164 /*
1165 Set To Default : DIMM Module Global Control Register (0x022259F1)
1166 DIMM Arbitration Disable (bit 20)
1167 DIMM Data/Control Output Driving Selection (bit12 - bit15)
1168 Refresh Enable (bit 17)
1169 */
1170
1171 data = 0x022259F1;
1172 writel(data, mmio + PDC_SDRAM_CONTROL_OFFSET);
1173 readl(mmio + PDC_SDRAM_CONTROL_OFFSET);
1174
1175 /* Turn on for ECC */
1176 pdc20621_i2c_read(pe, PDC_DIMM0_SPD_DEV_ADDRESS,
1177 PDC_DIMM_SPD_TYPE, &spd0);
1178 if (spd0 == 0x02) {
1179 data |= (0x01 << 16);
1180 writel(data, mmio + PDC_SDRAM_CONTROL_OFFSET);
1181 readl(mmio + PDC_SDRAM_CONTROL_OFFSET);
1182 printk(KERN_ERR "Local DIMM ECC Enabled\n");
1183 }
1184
1185 /* DIMM Initialization Select/Enable (bit 18/19) */
1186 data &= (~(1<<18));
1187 data |= (1<<19);
1188 writel(data, mmio + PDC_SDRAM_CONTROL_OFFSET);
1189
1190 error = 1;
1191 for (i = 1; i <= 10; i++) { /* polling ~5 secs */
1192 data = readl(mmio + PDC_SDRAM_CONTROL_OFFSET);
1193 if (!(data & (1<<19))) {
1194 error = 0;
1195 break;
1196 }
1197 msleep(i*100);
1198 }
1199 return error;
1200 }
1201
1202
1203 static unsigned int pdc20621_dimm_init(struct ata_probe_ent *pe)
1204 {
1205 int speed, size, length;
1206 u32 addr,spd0,pci_status;
1207 u32 tmp=0;
1208 u32 time_period=0;
1209 u32 tcount=0;
1210 u32 ticks=0;
1211 u32 clock=0;
1212 u32 fparam=0;
1213 void __iomem *mmio = pe->mmio_base;
1214
1215 /* hard-code chip #0 */
1216 mmio += PDC_CHIP0_OFS;
1217
1218 /* Initialize PLL based upon PCI Bus Frequency */
1219
1220 /* Initialize Time Period Register */
1221 writel(0xffffffff, mmio + PDC_TIME_PERIOD);
1222 time_period = readl(mmio + PDC_TIME_PERIOD);
1223 VPRINTK("Time Period Register (0x40): 0x%x\n", time_period);
1224
1225 /* Enable timer */
1226 writel(0x00001a0, mmio + PDC_TIME_CONTROL);
1227 readl(mmio + PDC_TIME_CONTROL);
1228
1229 /* Wait 3 seconds */
1230 msleep(3000);
1231
1232 /*
1233 When timer is enabled, counter is decreased every internal
1234 clock cycle.
1235 */
1236
1237 tcount = readl(mmio + PDC_TIME_COUNTER);
1238 VPRINTK("Time Counter Register (0x44): 0x%x\n", tcount);
1239
1240 /*
1241 If SX4 is on PCI-X bus, after 3 seconds, the timer counter
1242 register should be >= (0xffffffff - 3x10^8).
1243 */
1244 if(tcount >= PCI_X_TCOUNT) {
1245 ticks = (time_period - tcount);
1246 VPRINTK("Num counters 0x%x (%d)\n", ticks, ticks);
1247
1248 clock = (ticks / 300000);
1249 VPRINTK("10 * Internal clk = 0x%x (%d)\n", clock, clock);
1250
1251 clock = (clock * 33);
1252 VPRINTK("10 * Internal clk * 33 = 0x%x (%d)\n", clock, clock);
1253
1254 /* PLL F Param (bit 22:16) */
1255 fparam = (1400000 / clock) - 2;
1256 VPRINTK("PLL F Param: 0x%x (%d)\n", fparam, fparam);
1257
1258 /* OD param = 0x2 (bit 31:30), R param = 0x5 (bit 29:25) */
1259 pci_status = (0x8a001824 | (fparam << 16));
1260 } else
1261 pci_status = PCI_PLL_INIT;
1262
1263 /* Initialize PLL. */
1264 VPRINTK("pci_status: 0x%x\n", pci_status);
1265 writel(pci_status, mmio + PDC_CTL_STATUS);
1266 readl(mmio + PDC_CTL_STATUS);
1267
1268 /*
1269 Read SPD of DIMM by I2C interface,
1270 and program the DIMM Module Controller.
1271 */
1272 if (!(speed = pdc20621_detect_dimm(pe))) {
1273 printk(KERN_ERR "Detect Local DIMM Fail\n");
1274 return 1; /* DIMM error */
1275 }
1276 VPRINTK("Local DIMM Speed = %d\n", speed);
1277
1278 /* Programming DIMM0 Module Control Register (index_CID0:80h) */
1279 size = pdc20621_prog_dimm0(pe);
1280 VPRINTK("Local DIMM Size = %dMB\n",size);
1281
1282 /* Programming DIMM Module Global Control Register (index_CID0:88h) */
1283 if (pdc20621_prog_dimm_global(pe)) {
1284 printk(KERN_ERR "Programming DIMM Module Global Control Register Fail\n");
1285 return 1;
1286 }
1287
1288 #ifdef ATA_VERBOSE_DEBUG
1289 {
1290 u8 test_parttern1[40] = {0x55,0xAA,'P','r','o','m','i','s','e',' ',
1291 'N','o','t',' ','Y','e','t',' ','D','e','f','i','n','e','d',' ',
1292 '1','.','1','0',
1293 '9','8','0','3','1','6','1','2',0,0};
1294 u8 test_parttern2[40] = {0};
1295
1296 pdc20621_put_to_dimm(pe, (void *) test_parttern2, 0x10040, 40);
1297 pdc20621_put_to_dimm(pe, (void *) test_parttern2, 0x40, 40);
1298
1299 pdc20621_put_to_dimm(pe, (void *) test_parttern1, 0x10040, 40);
1300 pdc20621_get_from_dimm(pe, (void *) test_parttern2, 0x40, 40);
1301 printk(KERN_ERR "%x, %x, %s\n", test_parttern2[0],
1302 test_parttern2[1], &(test_parttern2[2]));
1303 pdc20621_get_from_dimm(pe, (void *) test_parttern2, 0x10040,
1304 40);
1305 printk(KERN_ERR "%x, %x, %s\n", test_parttern2[0],
1306 test_parttern2[1], &(test_parttern2[2]));
1307
1308 pdc20621_put_to_dimm(pe, (void *) test_parttern1, 0x40, 40);
1309 pdc20621_get_from_dimm(pe, (void *) test_parttern2, 0x40, 40);
1310 printk(KERN_ERR "%x, %x, %s\n", test_parttern2[0],
1311 test_parttern2[1], &(test_parttern2[2]));
1312 }
1313 #endif
1314
1315 /* ECC initiliazation. */
1316
1317 pdc20621_i2c_read(pe, PDC_DIMM0_SPD_DEV_ADDRESS,
1318 PDC_DIMM_SPD_TYPE, &spd0);
1319 if (spd0 == 0x02) {
1320 VPRINTK("Start ECC initialization\n");
1321 addr = 0;
1322 length = size * 1024 * 1024;
1323 while (addr < length) {
1324 pdc20621_put_to_dimm(pe, (void *) &tmp, addr,
1325 sizeof(u32));
1326 addr += sizeof(u32);
1327 }
1328 VPRINTK("Finish ECC initialization\n");
1329 }
1330 return 0;
1331 }
1332
1333
1334 static void pdc_20621_init(struct ata_probe_ent *pe)
1335 {
1336 u32 tmp;
1337 void __iomem *mmio = pe->mmio_base;
1338
1339 /* hard-code chip #0 */
1340 mmio += PDC_CHIP0_OFS;
1341
1342 /*
1343 * Select page 0x40 for our 32k DIMM window
1344 */
1345 tmp = readl(mmio + PDC_20621_DIMM_WINDOW) & 0xffff0000;
1346 tmp |= PDC_PAGE_WINDOW; /* page 40h; arbitrarily selected */
1347 writel(tmp, mmio + PDC_20621_DIMM_WINDOW);
1348
1349 /*
1350 * Reset Host DMA
1351 */
1352 tmp = readl(mmio + PDC_HDMA_CTLSTAT);
1353 tmp |= PDC_RESET;
1354 writel(tmp, mmio + PDC_HDMA_CTLSTAT);
1355 readl(mmio + PDC_HDMA_CTLSTAT); /* flush */
1356
1357 udelay(10);
1358
1359 tmp = readl(mmio + PDC_HDMA_CTLSTAT);
1360 tmp &= ~PDC_RESET;
1361 writel(tmp, mmio + PDC_HDMA_CTLSTAT);
1362 readl(mmio + PDC_HDMA_CTLSTAT); /* flush */
1363 }
1364
1365 static int pdc_sata_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
1366 {
1367 static int printed_version;
1368 struct ata_probe_ent *probe_ent = NULL;
1369 unsigned long base;
1370 void __iomem *mmio_base;
1371 void __iomem *dimm_mmio = NULL;
1372 struct pdc_host_priv *hpriv = NULL;
1373 unsigned int board_idx = (unsigned int) ent->driver_data;
1374 int pci_dev_busy = 0;
1375 int rc;
1376
1377 if (!printed_version++)
1378 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
1379
1380 /*
1381 * If this driver happens to only be useful on Apple's K2, then
1382 * we should check that here as it has a normal Serverworks ID
1383 */
1384 rc = pci_enable_device(pdev);
1385 if (rc)
1386 return rc;
1387
1388 rc = pci_request_regions(pdev, DRV_NAME);
1389 if (rc) {
1390 pci_dev_busy = 1;
1391 goto err_out;
1392 }
1393
1394 rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
1395 if (rc)
1396 goto err_out_regions;
1397 rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
1398 if (rc)
1399 goto err_out_regions;
1400
1401 probe_ent = kmalloc(sizeof(*probe_ent), GFP_KERNEL);
1402 if (probe_ent == NULL) {
1403 rc = -ENOMEM;
1404 goto err_out_regions;
1405 }
1406
1407 memset(probe_ent, 0, sizeof(*probe_ent));
1408 probe_ent->dev = pci_dev_to_dev(pdev);
1409 INIT_LIST_HEAD(&probe_ent->node);
1410
1411 mmio_base = pci_iomap(pdev, 3, 0);
1412 if (mmio_base == NULL) {
1413 rc = -ENOMEM;
1414 goto err_out_free_ent;
1415 }
1416 base = (unsigned long) mmio_base;
1417
1418 hpriv = kmalloc(sizeof(*hpriv), GFP_KERNEL);
1419 if (!hpriv) {
1420 rc = -ENOMEM;
1421 goto err_out_iounmap;
1422 }
1423 memset(hpriv, 0, sizeof(*hpriv));
1424
1425 dimm_mmio = pci_iomap(pdev, 4, 0);
1426 if (!dimm_mmio) {
1427 kfree(hpriv);
1428 rc = -ENOMEM;
1429 goto err_out_iounmap;
1430 }
1431
1432 hpriv->dimm_mmio = dimm_mmio;
1433
1434 probe_ent->sht = pdc_port_info[board_idx].sht;
1435 probe_ent->host_flags = pdc_port_info[board_idx].host_flags;
1436 probe_ent->pio_mask = pdc_port_info[board_idx].pio_mask;
1437 probe_ent->mwdma_mask = pdc_port_info[board_idx].mwdma_mask;
1438 probe_ent->udma_mask = pdc_port_info[board_idx].udma_mask;
1439 probe_ent->port_ops = pdc_port_info[board_idx].port_ops;
1440
1441 probe_ent->irq = pdev->irq;
1442 probe_ent->irq_flags = SA_SHIRQ;
1443 probe_ent->mmio_base = mmio_base;
1444
1445 probe_ent->private_data = hpriv;
1446 base += PDC_CHIP0_OFS;
1447
1448 probe_ent->n_ports = 4;
1449 pdc_sata_setup_port(&probe_ent->port[0], base + 0x200);
1450 pdc_sata_setup_port(&probe_ent->port[1], base + 0x280);
1451 pdc_sata_setup_port(&probe_ent->port[2], base + 0x300);
1452 pdc_sata_setup_port(&probe_ent->port[3], base + 0x380);
1453
1454 pci_set_master(pdev);
1455
1456 /* initialize adapter */
1457 /* initialize local dimm */
1458 if (pdc20621_dimm_init(probe_ent)) {
1459 rc = -ENOMEM;
1460 goto err_out_iounmap_dimm;
1461 }
1462 pdc_20621_init(probe_ent);
1463
1464 /* FIXME: check ata_device_add return value */
1465 ata_device_add(probe_ent);
1466 kfree(probe_ent);
1467
1468 return 0;
1469
1470 err_out_iounmap_dimm: /* only get to this label if 20621 */
1471 kfree(hpriv);
1472 pci_iounmap(pdev, dimm_mmio);
1473 err_out_iounmap:
1474 pci_iounmap(pdev, mmio_base);
1475 err_out_free_ent:
1476 kfree(probe_ent);
1477 err_out_regions:
1478 pci_release_regions(pdev);
1479 err_out:
1480 if (!pci_dev_busy)
1481 pci_disable_device(pdev);
1482 return rc;
1483 }
1484
1485
1486 static int __init pdc_sata_init(void)
1487 {
1488 return pci_module_init(&pdc_sata_pci_driver);
1489 }
1490
1491
1492 static void __exit pdc_sata_exit(void)
1493 {
1494 pci_unregister_driver(&pdc_sata_pci_driver);
1495 }
1496
1497
1498 MODULE_AUTHOR("Jeff Garzik");
1499 MODULE_DESCRIPTION("Promise SATA low-level driver");
1500 MODULE_LICENSE("GPL");
1501 MODULE_DEVICE_TABLE(pci, pdc_sata_pci_tbl);
1502 MODULE_VERSION(DRV_VERSION);
1503
1504 module_init(pdc_sata_init);
1505 module_exit(pdc_sata_exit);
Stable & featurefull patchset based on Linus's git branch