2 * sata_sx4.c - Promise SATA
4 * Maintained by: Tejun Heo <tj@kernel.org>
5 * Please ALWAYS copy linux-ide@vger.kernel.org
8 * Copyright 2003-2004 Red Hat, Inc.
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)
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.
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.
26 * libata documentation is available via 'make {ps|pdf}docs',
27 * as Documentation/DocBook/libata.*
29 * Hardware documentation available under NDA.
37 The SX4 (PDC20621) chip features a single Host DMA (HDMA) copy
38 engine, DIMM memory, and four ATA engines (one per SATA port).
39 Data is copied to/from DIMM memory by the HDMA engine, before
40 handing off to one (or more) of the ATA engines. The ATA
41 engines operate solely on DIMM memory.
43 The SX4 behaves like a PATA chip, with no SATA controls or
44 knowledge whatsoever, leading to the presumption that
45 PATA<->SATA bridges exist on SX4 boards, external to the
48 The chip is quite capable, supporting an XOR engine and linked
49 hardware commands (permits a string to transactions to be
50 submitted and waited-on as a single unit), and an optional
53 The limiting factor is largely software. This Linux driver was
54 written to multiplex the single HDMA engine to copy disk
55 transactions into a fixed DIMM memory space, from where an ATA
56 engine takes over. As a result, each WRITE looks like this:
58 submit HDMA packet to hardware
59 hardware copies data from system memory to DIMM
60 hardware raises interrupt
62 submit ATA packet to hardware
63 hardware executes ATA WRITE command, w/ data in DIMM
64 hardware raises interrupt
66 and each READ looks like this:
68 submit ATA packet to hardware
69 hardware executes ATA READ command, w/ data in DIMM
70 hardware raises interrupt
72 submit HDMA packet to hardware
73 hardware copies data from DIMM to system memory
74 hardware raises interrupt
76 This is a very slow, lock-step way of doing things that can
77 certainly be improved by motivated kernel hackers.
81 #include <linux/kernel.h>
82 #include <linux/module.h>
83 #include <linux/pci.h>
84 #include <linux/slab.h>
85 #include <linux/init.h>
86 #include <linux/blkdev.h>
87 #include <linux/delay.h>
88 #include <linux/interrupt.h>
89 #include <linux/device.h>
90 #include <scsi/scsi_host.h>
91 #include <scsi/scsi_cmnd.h>
92 #include <linux/libata.h>
93 #include "sata_promise.h"
95 #define DRV_NAME "sata_sx4"
96 #define DRV_VERSION "0.12"
103 PDC_PRD_TBL = 0x44, /* Direct command DMA table addr */
105 PDC_PKT_SUBMIT = 0x40, /* Command packet pointer addr */
106 PDC_HDMA_PKT_SUBMIT = 0x100, /* Host DMA packet pointer addr */
107 PDC_INT_SEQMASK = 0x40, /* Mask of asserted SEQ INTs */
108 PDC_HDMA_CTLSTAT = 0x12C, /* Host DMA control / status */
110 PDC_CTLSTAT = 0x60, /* IDEn control / status */
112 PDC_20621_SEQCTL = 0x400,
113 PDC_20621_SEQMASK = 0x480,
114 PDC_20621_GENERAL_CTL = 0x484,
115 PDC_20621_PAGE_SIZE = (32 * 1024),
117 /* chosen, not constant, values; we design our own DIMM mem map */
118 PDC_20621_DIMM_WINDOW = 0x0C, /* page# for 32K DIMM window */
119 PDC_20621_DIMM_BASE = 0x00200000,
120 PDC_20621_DIMM_DATA = (64 * 1024),
121 PDC_DIMM_DATA_STEP = (256 * 1024),
122 PDC_DIMM_WINDOW_STEP = (8 * 1024),
123 PDC_DIMM_HOST_PRD = (6 * 1024),
124 PDC_DIMM_HOST_PKT = (128 * 0),
125 PDC_DIMM_HPKT_PRD = (128 * 1),
126 PDC_DIMM_ATA_PKT = (128 * 2),
127 PDC_DIMM_APKT_PRD = (128 * 3),
128 PDC_DIMM_HEADER_SZ = PDC_DIMM_APKT_PRD + 128,
129 PDC_PAGE_WINDOW = 0x40,
130 PDC_PAGE_DATA = PDC_PAGE_WINDOW +
131 (PDC_20621_DIMM_DATA / PDC_20621_PAGE_SIZE),
132 PDC_PAGE_SET = PDC_DIMM_DATA_STEP / PDC_20621_PAGE_SIZE,
134 PDC_CHIP0_OFS = 0xC0000, /* offset of chip #0 */
136 PDC_20621_ERR_MASK = (1<<19) | (1<<20) | (1<<21) | (1<<22) |
139 board_20621 = 0, /* FastTrak S150 SX4 */
141 PDC_MASK_INT = (1 << 10), /* HDMA/ATA mask int */
142 PDC_RESET = (1 << 11), /* HDMA/ATA reset */
143 PDC_DMA_ENABLE = (1 << 7), /* DMA start/stop */
146 PDC_HDMA_Q_MASK = (PDC_MAX_HDMA - 1),
148 PDC_DIMM0_SPD_DEV_ADDRESS = 0x50,
149 PDC_DIMM1_SPD_DEV_ADDRESS = 0x51,
150 PDC_I2C_CONTROL = 0x48,
151 PDC_I2C_ADDR_DATA = 0x4C,
152 PDC_DIMM0_CONTROL = 0x80,
153 PDC_DIMM1_CONTROL = 0x84,
154 PDC_SDRAM_CONTROL = 0x88,
155 PDC_I2C_WRITE = 0, /* master -> slave */
156 PDC_I2C_READ = (1 << 6), /* master <- slave */
157 PDC_I2C_START = (1 << 7), /* start I2C proto */
158 PDC_I2C_MASK_INT = (1 << 5), /* mask I2C interrupt */
159 PDC_I2C_COMPLETE = (1 << 16), /* I2C normal compl. */
160 PDC_I2C_NO_ACK = (1 << 20), /* slave no-ack addr */
161 PDC_DIMM_SPD_SUBADDRESS_START = 0x00,
162 PDC_DIMM_SPD_SUBADDRESS_END = 0x7F,
163 PDC_DIMM_SPD_ROW_NUM = 3,
164 PDC_DIMM_SPD_COLUMN_NUM = 4,
165 PDC_DIMM_SPD_MODULE_ROW = 5,
166 PDC_DIMM_SPD_TYPE = 11,
167 PDC_DIMM_SPD_FRESH_RATE = 12,
168 PDC_DIMM_SPD_BANK_NUM = 17,
169 PDC_DIMM_SPD_CAS_LATENCY = 18,
170 PDC_DIMM_SPD_ATTRIBUTE = 21,
171 PDC_DIMM_SPD_ROW_PRE_CHARGE = 27,
172 PDC_DIMM_SPD_ROW_ACTIVE_DELAY = 28,
173 PDC_DIMM_SPD_RAS_CAS_DELAY = 29,
174 PDC_DIMM_SPD_ACTIVE_PRECHARGE = 30,
175 PDC_DIMM_SPD_SYSTEM_FREQ = 126,
176 PDC_CTL_STATUS = 0x08,
177 PDC_DIMM_WINDOW_CTLR = 0x0C,
178 PDC_TIME_CONTROL = 0x3C,
179 PDC_TIME_PERIOD = 0x40,
180 PDC_TIME_COUNTER = 0x44,
181 PDC_GENERAL_CTLR = 0x484,
182 PCI_PLL_INIT = 0x8A531824,
183 PCI_X_TCOUNT = 0xEE1E5CFF,
185 /* PDC_TIME_CONTROL bits */
186 PDC_TIMER_BUZZER = (1 << 10),
187 PDC_TIMER_MODE_PERIODIC = 0, /* bits 9:8 == 00 */
188 PDC_TIMER_MODE_ONCE = (1 << 8), /* bits 9:8 == 01 */
189 PDC_TIMER_ENABLE = (1 << 7),
190 PDC_TIMER_MASK_INT = (1 << 5),
191 PDC_TIMER_SEQ_MASK = 0x1f, /* SEQ ID for timer */
192 PDC_TIMER_DEFAULT = PDC_TIMER_MODE_ONCE |
197 #define ECC_ERASE_BUF_SZ (128 * 1024)
199 struct pdc_port_priv {
200 u8 dimm_buf[(ATA_PRD_SZ * ATA_MAX_PRD) + 512];
205 struct pdc_host_priv {
206 unsigned int doing_hdma;
207 unsigned int hdma_prod;
208 unsigned int hdma_cons;
210 struct ata_queued_cmd *qc;
212 unsigned long pkt_ofs;
217 static int pdc_sata_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
218 static void pdc_error_handler(struct ata_port *ap);
219 static void pdc_freeze(struct ata_port *ap);
220 static void pdc_thaw(struct ata_port *ap);
221 static int pdc_port_start(struct ata_port *ap);
222 static void pdc20621_qc_prep(struct ata_queued_cmd *qc);
223 static void pdc_tf_load_mmio(struct ata_port *ap, const struct ata_taskfile *tf);
224 static void pdc_exec_command_mmio(struct ata_port *ap, const struct ata_taskfile *tf);
225 static unsigned int pdc20621_dimm_init(struct ata_host *host);
226 static int pdc20621_detect_dimm(struct ata_host *host);
227 static unsigned int pdc20621_i2c_read(struct ata_host *host,
228 u32 device, u32 subaddr, u32 *pdata);
229 static int pdc20621_prog_dimm0(struct ata_host *host);
230 static unsigned int pdc20621_prog_dimm_global(struct ata_host *host);
231 #ifdef ATA_VERBOSE_DEBUG
232 static void pdc20621_get_from_dimm(struct ata_host *host,
233 void *psource, u32 offset, u32 size);
235 static void pdc20621_put_to_dimm(struct ata_host *host,
236 void *psource, u32 offset, u32 size);
237 static void pdc20621_irq_clear(struct ata_port *ap);
238 static unsigned int pdc20621_qc_issue(struct ata_queued_cmd *qc);
239 static int pdc_softreset(struct ata_link *link, unsigned int *class,
240 unsigned long deadline);
241 static void pdc_post_internal_cmd(struct ata_queued_cmd *qc);
242 static int pdc_check_atapi_dma(struct ata_queued_cmd *qc);
245 static struct scsi_host_template pdc_sata_sht = {
246 ATA_BASE_SHT(DRV_NAME),
247 .sg_tablesize = LIBATA_MAX_PRD,
248 .dma_boundary = ATA_DMA_BOUNDARY,
251 /* TODO: inherit from base port_ops after converting to new EH */
252 static struct ata_port_operations pdc_20621_ops = {
253 .inherits = &ata_sff_port_ops,
255 .check_atapi_dma = pdc_check_atapi_dma,
256 .qc_prep = pdc20621_qc_prep,
257 .qc_issue = pdc20621_qc_issue,
259 .freeze = pdc_freeze,
261 .softreset = pdc_softreset,
262 .error_handler = pdc_error_handler,
263 .lost_interrupt = ATA_OP_NULL,
264 .post_internal_cmd = pdc_post_internal_cmd,
266 .port_start = pdc_port_start,
268 .sff_tf_load = pdc_tf_load_mmio,
269 .sff_exec_command = pdc_exec_command_mmio,
270 .sff_irq_clear = pdc20621_irq_clear,
273 static const struct ata_port_info pdc_port_info[] = {
276 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_ATAPI |
277 ATA_FLAG_PIO_POLLING,
278 .pio_mask = ATA_PIO4,
279 .mwdma_mask = ATA_MWDMA2,
280 .udma_mask = ATA_UDMA6,
281 .port_ops = &pdc_20621_ops,
286 static const struct pci_device_id pdc_sata_pci_tbl[] = {
287 { PCI_VDEVICE(PROMISE, 0x6622), board_20621 },
289 { } /* terminate list */
292 static struct pci_driver pdc_sata_pci_driver = {
294 .id_table = pdc_sata_pci_tbl,
295 .probe = pdc_sata_init_one,
296 .remove = ata_pci_remove_one,
300 static int pdc_port_start(struct ata_port *ap)
302 struct device *dev = ap->host->dev;
303 struct pdc_port_priv *pp;
305 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
309 pp->pkt = dmam_alloc_coherent(dev, 128, &pp->pkt_dma, GFP_KERNEL);
313 ap->private_data = pp;
318 static inline void pdc20621_ata_sg(u8 *buf, unsigned int portno,
319 unsigned int total_len)
322 unsigned int dw = PDC_DIMM_APKT_PRD >> 2;
323 __le32 *buf32 = (__le32 *) buf;
325 /* output ATA packet S/G table */
326 addr = PDC_20621_DIMM_BASE + PDC_20621_DIMM_DATA +
327 (PDC_DIMM_DATA_STEP * portno);
328 VPRINTK("ATA sg addr 0x%x, %d\n", addr, addr);
329 buf32[dw] = cpu_to_le32(addr);
330 buf32[dw + 1] = cpu_to_le32(total_len | ATA_PRD_EOT);
332 VPRINTK("ATA PSG @ %x == (0x%x, 0x%x)\n",
333 PDC_20621_DIMM_BASE +
334 (PDC_DIMM_WINDOW_STEP * portno) +
336 buf32[dw], buf32[dw + 1]);
339 static inline void pdc20621_host_sg(u8 *buf, unsigned int portno,
340 unsigned int total_len)
343 unsigned int dw = PDC_DIMM_HPKT_PRD >> 2;
344 __le32 *buf32 = (__le32 *) buf;
346 /* output Host DMA packet S/G table */
347 addr = PDC_20621_DIMM_BASE + PDC_20621_DIMM_DATA +
348 (PDC_DIMM_DATA_STEP * portno);
350 buf32[dw] = cpu_to_le32(addr);
351 buf32[dw + 1] = cpu_to_le32(total_len | ATA_PRD_EOT);
353 VPRINTK("HOST PSG @ %x == (0x%x, 0x%x)\n",
354 PDC_20621_DIMM_BASE +
355 (PDC_DIMM_WINDOW_STEP * portno) +
357 buf32[dw], buf32[dw + 1]);
360 static inline unsigned int pdc20621_ata_pkt(struct ata_taskfile *tf,
361 unsigned int devno, u8 *buf,
365 __le32 *buf32 = (__le32 *) buf;
368 unsigned int dimm_sg = PDC_20621_DIMM_BASE +
369 (PDC_DIMM_WINDOW_STEP * portno) +
371 VPRINTK("ENTER, dimm_sg == 0x%x, %d\n", dimm_sg, dimm_sg);
373 i = PDC_DIMM_ATA_PKT;
378 if ((tf->protocol == ATA_PROT_DMA) && (!(tf->flags & ATA_TFLAG_WRITE)))
379 buf[i++] = PDC_PKT_READ;
380 else if (tf->protocol == ATA_PROT_NODATA)
381 buf[i++] = PDC_PKT_NODATA;
384 buf[i++] = 0; /* reserved */
385 buf[i++] = portno + 1; /* seq. id */
386 buf[i++] = 0xff; /* delay seq. id */
388 /* dimm dma S/G, and next-pkt */
390 if (tf->protocol == ATA_PROT_NODATA)
393 buf32[dw] = cpu_to_le32(dimm_sg);
398 dev_reg = ATA_DEVICE_OBS;
400 dev_reg = ATA_DEVICE_OBS | ATA_DEV1;
403 buf[i++] = (1 << 5) | PDC_PKT_CLEAR_BSY | ATA_REG_DEVICE;
406 /* device control register */
407 buf[i++] = (1 << 5) | PDC_REG_DEVCTL;
413 static inline void pdc20621_host_pkt(struct ata_taskfile *tf, u8 *buf,
418 __le32 *buf32 = (__le32 *) buf;
420 unsigned int host_sg = PDC_20621_DIMM_BASE +
421 (PDC_DIMM_WINDOW_STEP * portno) +
423 unsigned int dimm_sg = PDC_20621_DIMM_BASE +
424 (PDC_DIMM_WINDOW_STEP * portno) +
426 VPRINTK("ENTER, dimm_sg == 0x%x, %d\n", dimm_sg, dimm_sg);
427 VPRINTK("host_sg == 0x%x, %d\n", host_sg, host_sg);
429 dw = PDC_DIMM_HOST_PKT >> 2;
432 * Set up Host DMA packet
434 if ((tf->protocol == ATA_PROT_DMA) && (!(tf->flags & ATA_TFLAG_WRITE)))
438 tmp |= ((portno + 1 + 4) << 16); /* seq. id */
439 tmp |= (0xff << 24); /* delay seq. id */
440 buf32[dw + 0] = cpu_to_le32(tmp);
441 buf32[dw + 1] = cpu_to_le32(host_sg);
442 buf32[dw + 2] = cpu_to_le32(dimm_sg);
445 VPRINTK("HOST PKT @ %x == (0x%x 0x%x 0x%x 0x%x)\n",
446 PDC_20621_DIMM_BASE + (PDC_DIMM_WINDOW_STEP * portno) +
454 static void pdc20621_dma_prep(struct ata_queued_cmd *qc)
456 struct scatterlist *sg;
457 struct ata_port *ap = qc->ap;
458 struct pdc_port_priv *pp = ap->private_data;
459 void __iomem *mmio = ap->host->iomap[PDC_MMIO_BAR];
460 void __iomem *dimm_mmio = ap->host->iomap[PDC_DIMM_BAR];
461 unsigned int portno = ap->port_no;
462 unsigned int i, si, idx, total_len = 0, sgt_len;
463 __le32 *buf = (__le32 *) &pp->dimm_buf[PDC_DIMM_HEADER_SZ];
465 WARN_ON(!(qc->flags & ATA_QCFLAG_DMAMAP));
467 VPRINTK("ata%u: ENTER\n", ap->print_id);
469 /* hard-code chip #0 */
470 mmio += PDC_CHIP0_OFS;
476 for_each_sg(qc->sg, sg, qc->n_elem, si) {
477 buf[idx++] = cpu_to_le32(sg_dma_address(sg));
478 buf[idx++] = cpu_to_le32(sg_dma_len(sg));
479 total_len += sg_dma_len(sg);
481 buf[idx - 1] |= cpu_to_le32(ATA_PRD_EOT);
485 * Build ATA, host DMA packets
487 pdc20621_host_sg(&pp->dimm_buf[0], portno, total_len);
488 pdc20621_host_pkt(&qc->tf, &pp->dimm_buf[0], portno);
490 pdc20621_ata_sg(&pp->dimm_buf[0], portno, total_len);
491 i = pdc20621_ata_pkt(&qc->tf, qc->dev->devno, &pp->dimm_buf[0], portno);
493 if (qc->tf.flags & ATA_TFLAG_LBA48)
494 i = pdc_prep_lba48(&qc->tf, &pp->dimm_buf[0], i);
496 i = pdc_prep_lba28(&qc->tf, &pp->dimm_buf[0], i);
498 pdc_pkt_footer(&qc->tf, &pp->dimm_buf[0], i);
500 /* copy three S/G tables and two packets to DIMM MMIO window */
501 memcpy_toio(dimm_mmio + (portno * PDC_DIMM_WINDOW_STEP),
502 &pp->dimm_buf, PDC_DIMM_HEADER_SZ);
503 memcpy_toio(dimm_mmio + (portno * PDC_DIMM_WINDOW_STEP) +
505 &pp->dimm_buf[PDC_DIMM_HEADER_SZ], sgt_len);
507 /* force host FIFO dump */
508 writel(0x00000001, mmio + PDC_20621_GENERAL_CTL);
510 readl(dimm_mmio); /* MMIO PCI posting flush */
512 VPRINTK("ata pkt buf ofs %u, prd size %u, mmio copied\n", i, sgt_len);
515 static void pdc20621_nodata_prep(struct ata_queued_cmd *qc)
517 struct ata_port *ap = qc->ap;
518 struct pdc_port_priv *pp = ap->private_data;
519 void __iomem *mmio = ap->host->iomap[PDC_MMIO_BAR];
520 void __iomem *dimm_mmio = ap->host->iomap[PDC_DIMM_BAR];
521 unsigned int portno = ap->port_no;
524 VPRINTK("ata%u: ENTER\n", ap->print_id);
526 /* hard-code chip #0 */
527 mmio += PDC_CHIP0_OFS;
529 i = pdc20621_ata_pkt(&qc->tf, qc->dev->devno, &pp->dimm_buf[0], portno);
531 if (qc->tf.flags & ATA_TFLAG_LBA48)
532 i = pdc_prep_lba48(&qc->tf, &pp->dimm_buf[0], i);
534 i = pdc_prep_lba28(&qc->tf, &pp->dimm_buf[0], i);
536 pdc_pkt_footer(&qc->tf, &pp->dimm_buf[0], i);
538 /* copy three S/G tables and two packets to DIMM MMIO window */
539 memcpy_toio(dimm_mmio + (portno * PDC_DIMM_WINDOW_STEP),
540 &pp->dimm_buf, PDC_DIMM_HEADER_SZ);
542 /* force host FIFO dump */
543 writel(0x00000001, mmio + PDC_20621_GENERAL_CTL);
545 readl(dimm_mmio); /* MMIO PCI posting flush */
547 VPRINTK("ata pkt buf ofs %u, mmio copied\n", i);
550 static void pdc20621_qc_prep(struct ata_queued_cmd *qc)
552 switch (qc->tf.protocol) {
554 pdc20621_dma_prep(qc);
556 case ATA_PROT_NODATA:
557 pdc20621_nodata_prep(qc);
564 static void __pdc20621_push_hdma(struct ata_queued_cmd *qc,
568 struct ata_port *ap = qc->ap;
569 struct ata_host *host = ap->host;
570 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
572 /* hard-code chip #0 */
573 mmio += PDC_CHIP0_OFS;
575 writel(0x00000001, mmio + PDC_20621_SEQCTL + (seq * 4));
576 readl(mmio + PDC_20621_SEQCTL + (seq * 4)); /* flush */
578 writel(pkt_ofs, mmio + PDC_HDMA_PKT_SUBMIT);
579 readl(mmio + PDC_HDMA_PKT_SUBMIT); /* flush */
582 static void pdc20621_push_hdma(struct ata_queued_cmd *qc,
586 struct ata_port *ap = qc->ap;
587 struct pdc_host_priv *pp = ap->host->private_data;
588 unsigned int idx = pp->hdma_prod & PDC_HDMA_Q_MASK;
590 if (!pp->doing_hdma) {
591 __pdc20621_push_hdma(qc, seq, pkt_ofs);
596 pp->hdma[idx].qc = qc;
597 pp->hdma[idx].seq = seq;
598 pp->hdma[idx].pkt_ofs = pkt_ofs;
602 static void pdc20621_pop_hdma(struct ata_queued_cmd *qc)
604 struct ata_port *ap = qc->ap;
605 struct pdc_host_priv *pp = ap->host->private_data;
606 unsigned int idx = pp->hdma_cons & PDC_HDMA_Q_MASK;
608 /* if nothing on queue, we're done */
609 if (pp->hdma_prod == pp->hdma_cons) {
614 __pdc20621_push_hdma(pp->hdma[idx].qc, pp->hdma[idx].seq,
615 pp->hdma[idx].pkt_ofs);
619 #ifdef ATA_VERBOSE_DEBUG
620 static void pdc20621_dump_hdma(struct ata_queued_cmd *qc)
622 struct ata_port *ap = qc->ap;
623 unsigned int port_no = ap->port_no;
624 void __iomem *dimm_mmio = ap->host->iomap[PDC_DIMM_BAR];
626 dimm_mmio += (port_no * PDC_DIMM_WINDOW_STEP);
627 dimm_mmio += PDC_DIMM_HOST_PKT;
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));
635 static inline void pdc20621_dump_hdma(struct ata_queued_cmd *qc) { }
636 #endif /* ATA_VERBOSE_DEBUG */
638 static void pdc20621_packet_start(struct ata_queued_cmd *qc)
640 struct ata_port *ap = qc->ap;
641 struct ata_host *host = ap->host;
642 unsigned int port_no = ap->port_no;
643 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
644 unsigned int rw = (qc->tf.flags & ATA_TFLAG_WRITE);
645 u8 seq = (u8) (port_no + 1);
646 unsigned int port_ofs;
648 /* hard-code chip #0 */
649 mmio += PDC_CHIP0_OFS;
651 VPRINTK("ata%u: ENTER\n", ap->print_id);
653 wmb(); /* flush PRD, pkt writes */
655 port_ofs = PDC_20621_DIMM_BASE + (PDC_DIMM_WINDOW_STEP * port_no);
657 /* if writing, we (1) DMA to DIMM, then (2) do ATA command */
658 if (rw && qc->tf.protocol == ATA_PROT_DMA) {
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,
668 writel(0x00000001, mmio + PDC_20621_SEQCTL + (seq * 4));
669 readl(mmio + PDC_20621_SEQCTL + (seq * 4)); /* flush */
671 writel(port_ofs + PDC_DIMM_ATA_PKT,
672 ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT);
673 readl(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,
681 static unsigned int pdc20621_qc_issue(struct ata_queued_cmd *qc)
683 switch (qc->tf.protocol) {
684 case ATA_PROT_NODATA:
685 if (qc->tf.flags & ATA_TFLAG_POLLING)
689 pdc20621_packet_start(qc);
700 return ata_sff_qc_issue(qc);
703 static inline unsigned int pdc20621_host_intr(struct ata_port *ap,
704 struct ata_queued_cmd *qc,
705 unsigned int doing_hdma,
708 unsigned int port_no = ap->port_no;
709 unsigned int port_ofs =
710 PDC_20621_DIMM_BASE + (PDC_DIMM_WINDOW_STEP * port_no);
712 unsigned int handled = 0;
716 if ((qc->tf.protocol == ATA_PROT_DMA) && /* read */
717 (!(qc->tf.flags & ATA_TFLAG_WRITE))) {
719 /* step two - DMA from DIMM to host */
721 VPRINTK("ata%u: read hdma, 0x%x 0x%x\n", ap->print_id,
722 readl(mmio + 0x104), readl(mmio + PDC_HDMA_CTLSTAT));
723 /* get drive status; clear intr; complete txn */
724 qc->err_mask |= ac_err_mask(ata_wait_idle(ap));
726 pdc20621_pop_hdma(qc);
729 /* step one - exec ATA command */
731 u8 seq = (u8) (port_no + 1 + 4);
732 VPRINTK("ata%u: read ata, 0x%x 0x%x\n", ap->print_id,
733 readl(mmio + 0x104), readl(mmio + PDC_HDMA_CTLSTAT));
735 /* submit hdma pkt */
736 pdc20621_dump_hdma(qc);
737 pdc20621_push_hdma(qc, seq,
738 port_ofs + PDC_DIMM_HOST_PKT);
742 } else if (qc->tf.protocol == ATA_PROT_DMA) { /* write */
744 /* step one - DMA from host to DIMM */
746 u8 seq = (u8) (port_no + 1);
747 VPRINTK("ata%u: write hdma, 0x%x 0x%x\n", ap->print_id,
748 readl(mmio + 0x104), readl(mmio + PDC_HDMA_CTLSTAT));
751 writel(0x00000001, mmio + PDC_20621_SEQCTL + (seq * 4));
752 readl(mmio + PDC_20621_SEQCTL + (seq * 4));
753 writel(port_ofs + PDC_DIMM_ATA_PKT,
754 ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT);
755 readl(ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT);
758 /* step two - execute ATA command */
760 VPRINTK("ata%u: write ata, 0x%x 0x%x\n", ap->print_id,
761 readl(mmio + 0x104), readl(mmio + PDC_HDMA_CTLSTAT));
762 /* get drive status; clear intr; complete txn */
763 qc->err_mask |= ac_err_mask(ata_wait_idle(ap));
765 pdc20621_pop_hdma(qc);
769 /* command completion, but no data xfer */
770 } else if (qc->tf.protocol == ATA_PROT_NODATA) {
772 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
773 DPRINTK("BUS_NODATA (drv_stat 0x%X)\n", status);
774 qc->err_mask |= ac_err_mask(status);
779 ap->stats.idle_irq++;
785 static void pdc20621_irq_clear(struct ata_port *ap)
787 ioread8(ap->ioaddr.status_addr);
790 static irqreturn_t pdc20621_interrupt(int irq, void *dev_instance)
792 struct ata_host *host = dev_instance;
795 unsigned int i, tmp, port_no;
796 unsigned int handled = 0;
797 void __iomem *mmio_base;
801 if (!host || !host->iomap[PDC_MMIO_BAR]) {
802 VPRINTK("QUICK EXIT\n");
806 mmio_base = host->iomap[PDC_MMIO_BAR];
808 /* reading should also clear interrupts */
809 mmio_base += PDC_CHIP0_OFS;
810 mask = readl(mmio_base + PDC_20621_SEQMASK);
811 VPRINTK("mask == 0x%x\n", mask);
813 if (mask == 0xffffffff) {
814 VPRINTK("QUICK EXIT 2\n");
817 mask &= 0xffff; /* only 16 tags possible */
819 VPRINTK("QUICK EXIT 3\n");
823 spin_lock(&host->lock);
825 for (i = 1; i < 9; i++) {
829 if (port_no >= host->n_ports)
832 ap = host->ports[port_no];
833 tmp = mask & (1 << i);
834 VPRINTK("seq %u, port_no %u, ap %p, tmp %x\n", i, port_no, ap, tmp);
836 struct ata_queued_cmd *qc;
838 qc = ata_qc_from_tag(ap, ap->link.active_tag);
839 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING)))
840 handled += pdc20621_host_intr(ap, qc, (i > 4),
845 spin_unlock(&host->lock);
847 VPRINTK("mask == 0x%x\n", mask);
851 return IRQ_RETVAL(handled);
854 static void pdc_freeze(struct ata_port *ap)
856 void __iomem *mmio = ap->ioaddr.cmd_addr;
859 /* FIXME: if all 4 ATA engines are stopped, also stop HDMA engine */
861 tmp = readl(mmio + PDC_CTLSTAT);
863 tmp &= ~PDC_DMA_ENABLE;
864 writel(tmp, mmio + PDC_CTLSTAT);
865 readl(mmio + PDC_CTLSTAT); /* flush */
868 static void pdc_thaw(struct ata_port *ap)
870 void __iomem *mmio = ap->ioaddr.cmd_addr;
873 /* FIXME: start HDMA engine, if zero ATA engines running */
876 ioread8(ap->ioaddr.status_addr);
878 /* turn IRQ back on */
879 tmp = readl(mmio + PDC_CTLSTAT);
880 tmp &= ~PDC_MASK_INT;
881 writel(tmp, mmio + PDC_CTLSTAT);
882 readl(mmio + PDC_CTLSTAT); /* flush */
885 static void pdc_reset_port(struct ata_port *ap)
887 void __iomem *mmio = ap->ioaddr.cmd_addr + PDC_CTLSTAT;
891 /* FIXME: handle HDMA copy engine */
893 for (i = 11; i > 0; i--) {
906 readl(mmio); /* flush */
909 static int pdc_softreset(struct ata_link *link, unsigned int *class,
910 unsigned long deadline)
912 pdc_reset_port(link->ap);
913 return ata_sff_softreset(link, class, deadline);
916 static void pdc_error_handler(struct ata_port *ap)
918 if (!(ap->pflags & ATA_PFLAG_FROZEN))
921 ata_sff_error_handler(ap);
924 static void pdc_post_internal_cmd(struct ata_queued_cmd *qc)
926 struct ata_port *ap = qc->ap;
928 /* make DMA engine forget about the failed command */
929 if (qc->flags & ATA_QCFLAG_FAILED)
933 static int pdc_check_atapi_dma(struct ata_queued_cmd *qc)
935 u8 *scsicmd = qc->scsicmd->cmnd;
936 int pio = 1; /* atapi dma off by default */
938 /* Whitelist commands that may use DMA. */
939 switch (scsicmd[0]) {
946 case 0xad: /* READ_DVD_STRUCTURE */
947 case 0xbe: /* READ_CD */
950 /* -45150 (FFFF4FA2) to -1 (FFFFFFFF) shall use PIO mode */
951 if (scsicmd[0] == WRITE_10) {
957 if (lba >= 0xFFFF4FA2)
963 static void pdc_tf_load_mmio(struct ata_port *ap, const struct ata_taskfile *tf)
965 WARN_ON(tf->protocol == ATA_PROT_DMA ||
966 tf->protocol == ATAPI_PROT_DMA);
967 ata_sff_tf_load(ap, tf);
971 static void pdc_exec_command_mmio(struct ata_port *ap, const struct ata_taskfile *tf)
973 WARN_ON(tf->protocol == ATA_PROT_DMA ||
974 tf->protocol == ATAPI_PROT_DMA);
975 ata_sff_exec_command(ap, tf);
979 static void pdc_sata_setup_port(struct ata_ioports *port, void __iomem *base)
981 port->cmd_addr = base;
982 port->data_addr = base;
984 port->error_addr = base + 0x4;
985 port->nsect_addr = base + 0x8;
986 port->lbal_addr = base + 0xc;
987 port->lbam_addr = base + 0x10;
988 port->lbah_addr = base + 0x14;
989 port->device_addr = base + 0x18;
991 port->status_addr = base + 0x1c;
992 port->altstatus_addr =
993 port->ctl_addr = base + 0x38;
997 #ifdef ATA_VERBOSE_DEBUG
998 static void pdc20621_get_from_dimm(struct ata_host *host, void *psource,
999 u32 offset, u32 size)
1005 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
1006 void __iomem *dimm_mmio = host->iomap[PDC_DIMM_BAR];
1008 /* hard-code chip #0 */
1009 mmio += PDC_CHIP0_OFS;
1012 window_size = 0x2000 * 4; /* 32K byte uchar size */
1013 idx = (u16) (offset / window_size);
1015 writel(0x01, mmio + PDC_GENERAL_CTLR);
1016 readl(mmio + PDC_GENERAL_CTLR);
1017 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
1018 readl(mmio + PDC_DIMM_WINDOW_CTLR);
1020 offset -= (idx * window_size);
1022 dist = ((long) (window_size - (offset + size))) >= 0 ? size :
1023 (long) (window_size - offset);
1024 memcpy_fromio((char *) psource, (char *) (dimm_mmio + offset / 4),
1029 for (; (long) size >= (long) window_size ;) {
1030 writel(0x01, mmio + PDC_GENERAL_CTLR);
1031 readl(mmio + PDC_GENERAL_CTLR);
1032 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
1033 readl(mmio + PDC_DIMM_WINDOW_CTLR);
1034 memcpy_fromio((char *) psource, (char *) (dimm_mmio),
1036 psource += window_size;
1037 size -= window_size;
1042 writel(0x01, mmio + PDC_GENERAL_CTLR);
1043 readl(mmio + PDC_GENERAL_CTLR);
1044 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
1045 readl(mmio + PDC_DIMM_WINDOW_CTLR);
1046 memcpy_fromio((char *) psource, (char *) (dimm_mmio),
1053 static void pdc20621_put_to_dimm(struct ata_host *host, void *psource,
1054 u32 offset, u32 size)
1060 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
1061 void __iomem *dimm_mmio = host->iomap[PDC_DIMM_BAR];
1063 /* hard-code chip #0 */
1064 mmio += PDC_CHIP0_OFS;
1067 window_size = 0x2000 * 4; /* 32K byte uchar size */
1068 idx = (u16) (offset / window_size);
1070 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
1071 readl(mmio + PDC_DIMM_WINDOW_CTLR);
1072 offset -= (idx * window_size);
1074 dist = ((long)(s32)(window_size - (offset + size))) >= 0 ? size :
1075 (long) (window_size - offset);
1076 memcpy_toio(dimm_mmio + offset / 4, psource, dist);
1077 writel(0x01, mmio + PDC_GENERAL_CTLR);
1078 readl(mmio + PDC_GENERAL_CTLR);
1082 for (; (long) size >= (long) window_size ;) {
1083 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
1084 readl(mmio + PDC_DIMM_WINDOW_CTLR);
1085 memcpy_toio(dimm_mmio, psource, window_size / 4);
1086 writel(0x01, mmio + PDC_GENERAL_CTLR);
1087 readl(mmio + PDC_GENERAL_CTLR);
1088 psource += window_size;
1089 size -= window_size;
1094 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
1095 readl(mmio + PDC_DIMM_WINDOW_CTLR);
1096 memcpy_toio(dimm_mmio, psource, size / 4);
1097 writel(0x01, mmio + PDC_GENERAL_CTLR);
1098 readl(mmio + PDC_GENERAL_CTLR);
1103 static unsigned int pdc20621_i2c_read(struct ata_host *host, u32 device,
1104 u32 subaddr, u32 *pdata)
1106 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
1111 /* hard-code chip #0 */
1112 mmio += PDC_CHIP0_OFS;
1114 i2creg |= device << 24;
1115 i2creg |= subaddr << 16;
1117 /* Set the device and subaddress */
1118 writel(i2creg, mmio + PDC_I2C_ADDR_DATA);
1119 readl(mmio + PDC_I2C_ADDR_DATA);
1121 /* Write Control to perform read operation, mask int */
1122 writel(PDC_I2C_READ | PDC_I2C_START | PDC_I2C_MASK_INT,
1123 mmio + PDC_I2C_CONTROL);
1125 for (count = 0; count <= 1000; count ++) {
1126 status = readl(mmio + PDC_I2C_CONTROL);
1127 if (status & PDC_I2C_COMPLETE) {
1128 status = readl(mmio + PDC_I2C_ADDR_DATA);
1130 } else if (count == 1000)
1134 *pdata = (status >> 8) & 0x000000ff;
1139 static int pdc20621_detect_dimm(struct ata_host *host)
1142 if (pdc20621_i2c_read(host, PDC_DIMM0_SPD_DEV_ADDRESS,
1143 PDC_DIMM_SPD_SYSTEM_FREQ, &data)) {
1149 if (pdc20621_i2c_read(host, PDC_DIMM0_SPD_DEV_ADDRESS, 9, &data)) {
1159 static int pdc20621_prog_dimm0(struct ata_host *host)
1165 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
1166 static const struct {
1169 } pdc_i2c_read_data [] = {
1170 { PDC_DIMM_SPD_TYPE, 11 },
1171 { PDC_DIMM_SPD_FRESH_RATE, 12 },
1172 { PDC_DIMM_SPD_COLUMN_NUM, 4 },
1173 { PDC_DIMM_SPD_ATTRIBUTE, 21 },
1174 { PDC_DIMM_SPD_ROW_NUM, 3 },
1175 { PDC_DIMM_SPD_BANK_NUM, 17 },
1176 { PDC_DIMM_SPD_MODULE_ROW, 5 },
1177 { PDC_DIMM_SPD_ROW_PRE_CHARGE, 27 },
1178 { PDC_DIMM_SPD_ROW_ACTIVE_DELAY, 28 },
1179 { PDC_DIMM_SPD_RAS_CAS_DELAY, 29 },
1180 { PDC_DIMM_SPD_ACTIVE_PRECHARGE, 30 },
1181 { PDC_DIMM_SPD_CAS_LATENCY, 18 },
1184 /* hard-code chip #0 */
1185 mmio += PDC_CHIP0_OFS;
1187 for (i = 0; i < ARRAY_SIZE(pdc_i2c_read_data); i++)
1188 pdc20621_i2c_read(host, PDC_DIMM0_SPD_DEV_ADDRESS,
1189 pdc_i2c_read_data[i].reg,
1190 &spd0[pdc_i2c_read_data[i].ofs]);
1192 data |= (spd0[4] - 8) | ((spd0[21] != 0) << 3) | ((spd0[3]-11) << 4);
1193 data |= ((spd0[17] / 4) << 6) | ((spd0[5] / 2) << 7) |
1194 ((((spd0[27] + 9) / 10) - 1) << 8) ;
1195 data |= (((((spd0[29] > spd0[28])
1196 ? spd0[29] : spd0[28]) + 9) / 10) - 1) << 10;
1197 data |= ((spd0[30] - spd0[29] + 9) / 10 - 2) << 12;
1199 if (spd0[18] & 0x08)
1200 data |= ((0x03) << 14);
1201 else if (spd0[18] & 0x04)
1202 data |= ((0x02) << 14);
1203 else if (spd0[18] & 0x01)
1204 data |= ((0x01) << 14);
1209 Calculate the size of bDIMMSize (power of 2) and
1210 merge the DIMM size by program start/end address.
1213 bdimmsize = spd0[4] + (spd0[5] / 2) + spd0[3] + (spd0[17] / 2) + 3;
1214 size = (1 << bdimmsize) >> 20; /* size = xxx(MB) */
1215 data |= (((size / 16) - 1) << 16);
1218 writel(data, mmio + PDC_DIMM0_CONTROL);
1219 readl(mmio + PDC_DIMM0_CONTROL);
1224 static unsigned int pdc20621_prog_dimm_global(struct ata_host *host)
1228 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
1230 /* hard-code chip #0 */
1231 mmio += PDC_CHIP0_OFS;
1234 Set To Default : DIMM Module Global Control Register (0x022259F1)
1235 DIMM Arbitration Disable (bit 20)
1236 DIMM Data/Control Output Driving Selection (bit12 - bit15)
1237 Refresh Enable (bit 17)
1241 writel(data, mmio + PDC_SDRAM_CONTROL);
1242 readl(mmio + PDC_SDRAM_CONTROL);
1244 /* Turn on for ECC */
1245 pdc20621_i2c_read(host, PDC_DIMM0_SPD_DEV_ADDRESS,
1246 PDC_DIMM_SPD_TYPE, &spd0);
1248 data |= (0x01 << 16);
1249 writel(data, mmio + PDC_SDRAM_CONTROL);
1250 readl(mmio + PDC_SDRAM_CONTROL);
1251 printk(KERN_ERR "Local DIMM ECC Enabled\n");
1254 /* DIMM Initialization Select/Enable (bit 18/19) */
1257 writel(data, mmio + PDC_SDRAM_CONTROL);
1260 for (i = 1; i <= 10; i++) { /* polling ~5 secs */
1261 data = readl(mmio + PDC_SDRAM_CONTROL);
1262 if (!(data & (1<<19))) {
1272 static unsigned int pdc20621_dimm_init(struct ata_host *host)
1274 int speed, size, length;
1275 u32 addr, spd0, pci_status;
1276 u32 time_period = 0;
1281 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
1283 /* hard-code chip #0 */
1284 mmio += PDC_CHIP0_OFS;
1286 /* Initialize PLL based upon PCI Bus Frequency */
1288 /* Initialize Time Period Register */
1289 writel(0xffffffff, mmio + PDC_TIME_PERIOD);
1290 time_period = readl(mmio + PDC_TIME_PERIOD);
1291 VPRINTK("Time Period Register (0x40): 0x%x\n", time_period);
1294 writel(PDC_TIMER_DEFAULT, mmio + PDC_TIME_CONTROL);
1295 readl(mmio + PDC_TIME_CONTROL);
1297 /* Wait 3 seconds */
1301 When timer is enabled, counter is decreased every internal
1305 tcount = readl(mmio + PDC_TIME_COUNTER);
1306 VPRINTK("Time Counter Register (0x44): 0x%x\n", tcount);
1309 If SX4 is on PCI-X bus, after 3 seconds, the timer counter
1310 register should be >= (0xffffffff - 3x10^8).
1312 if (tcount >= PCI_X_TCOUNT) {
1313 ticks = (time_period - tcount);
1314 VPRINTK("Num counters 0x%x (%d)\n", ticks, ticks);
1316 clock = (ticks / 300000);
1317 VPRINTK("10 * Internal clk = 0x%x (%d)\n", clock, clock);
1319 clock = (clock * 33);
1320 VPRINTK("10 * Internal clk * 33 = 0x%x (%d)\n", clock, clock);
1322 /* PLL F Param (bit 22:16) */
1323 fparam = (1400000 / clock) - 2;
1324 VPRINTK("PLL F Param: 0x%x (%d)\n", fparam, fparam);
1326 /* OD param = 0x2 (bit 31:30), R param = 0x5 (bit 29:25) */
1327 pci_status = (0x8a001824 | (fparam << 16));
1329 pci_status = PCI_PLL_INIT;
1331 /* Initialize PLL. */
1332 VPRINTK("pci_status: 0x%x\n", pci_status);
1333 writel(pci_status, mmio + PDC_CTL_STATUS);
1334 readl(mmio + PDC_CTL_STATUS);
1337 Read SPD of DIMM by I2C interface,
1338 and program the DIMM Module Controller.
1340 if (!(speed = pdc20621_detect_dimm(host))) {
1341 printk(KERN_ERR "Detect Local DIMM Fail\n");
1342 return 1; /* DIMM error */
1344 VPRINTK("Local DIMM Speed = %d\n", speed);
1346 /* Programming DIMM0 Module Control Register (index_CID0:80h) */
1347 size = pdc20621_prog_dimm0(host);
1348 VPRINTK("Local DIMM Size = %dMB\n", size);
1350 /* Programming DIMM Module Global Control Register (index_CID0:88h) */
1351 if (pdc20621_prog_dimm_global(host)) {
1352 printk(KERN_ERR "Programming DIMM Module Global Control Register Fail\n");
1356 #ifdef ATA_VERBOSE_DEBUG
1358 u8 test_parttern1[40] =
1359 {0x55,0xAA,'P','r','o','m','i','s','e',' ',
1360 'N','o','t',' ','Y','e','t',' ',
1361 'D','e','f','i','n','e','d',' ',
1363 '9','8','0','3','1','6','1','2',0,0};
1364 u8 test_parttern2[40] = {0};
1366 pdc20621_put_to_dimm(host, test_parttern2, 0x10040, 40);
1367 pdc20621_put_to_dimm(host, test_parttern2, 0x40, 40);
1369 pdc20621_put_to_dimm(host, test_parttern1, 0x10040, 40);
1370 pdc20621_get_from_dimm(host, test_parttern2, 0x40, 40);
1371 printk(KERN_ERR "%x, %x, %s\n", test_parttern2[0],
1372 test_parttern2[1], &(test_parttern2[2]));
1373 pdc20621_get_from_dimm(host, test_parttern2, 0x10040,
1375 printk(KERN_ERR "%x, %x, %s\n", test_parttern2[0],
1376 test_parttern2[1], &(test_parttern2[2]));
1378 pdc20621_put_to_dimm(host, test_parttern1, 0x40, 40);
1379 pdc20621_get_from_dimm(host, test_parttern2, 0x40, 40);
1380 printk(KERN_ERR "%x, %x, %s\n", test_parttern2[0],
1381 test_parttern2[1], &(test_parttern2[2]));
1385 /* ECC initiliazation. */
1387 pdc20621_i2c_read(host, PDC_DIMM0_SPD_DEV_ADDRESS,
1388 PDC_DIMM_SPD_TYPE, &spd0);
1391 VPRINTK("Start ECC initialization\n");
1393 length = size * 1024 * 1024;
1394 buf = kzalloc(ECC_ERASE_BUF_SZ, GFP_KERNEL);
1395 while (addr < length) {
1396 pdc20621_put_to_dimm(host, buf, addr,
1398 addr += ECC_ERASE_BUF_SZ;
1401 VPRINTK("Finish ECC initialization\n");
1407 static void pdc_20621_init(struct ata_host *host)
1410 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
1412 /* hard-code chip #0 */
1413 mmio += PDC_CHIP0_OFS;
1416 * Select page 0x40 for our 32k DIMM window
1418 tmp = readl(mmio + PDC_20621_DIMM_WINDOW) & 0xffff0000;
1419 tmp |= PDC_PAGE_WINDOW; /* page 40h; arbitrarily selected */
1420 writel(tmp, mmio + PDC_20621_DIMM_WINDOW);
1425 tmp = readl(mmio + PDC_HDMA_CTLSTAT);
1427 writel(tmp, mmio + PDC_HDMA_CTLSTAT);
1428 readl(mmio + PDC_HDMA_CTLSTAT); /* flush */
1432 tmp = readl(mmio + PDC_HDMA_CTLSTAT);
1434 writel(tmp, mmio + PDC_HDMA_CTLSTAT);
1435 readl(mmio + PDC_HDMA_CTLSTAT); /* flush */
1438 static int pdc_sata_init_one(struct pci_dev *pdev,
1439 const struct pci_device_id *ent)
1441 const struct ata_port_info *ppi[] =
1442 { &pdc_port_info[ent->driver_data], NULL };
1443 struct ata_host *host;
1444 struct pdc_host_priv *hpriv;
1447 ata_print_version_once(&pdev->dev, DRV_VERSION);
1450 host = ata_host_alloc_pinfo(&pdev->dev, ppi, 4);
1451 hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL);
1452 if (!host || !hpriv)
1455 host->private_data = hpriv;
1457 /* acquire resources and fill host */
1458 rc = pcim_enable_device(pdev);
1462 rc = pcim_iomap_regions(pdev, (1 << PDC_MMIO_BAR) | (1 << PDC_DIMM_BAR),
1465 pcim_pin_device(pdev);
1468 host->iomap = pcim_iomap_table(pdev);
1470 for (i = 0; i < 4; i++) {
1471 struct ata_port *ap = host->ports[i];
1472 void __iomem *base = host->iomap[PDC_MMIO_BAR] + PDC_CHIP0_OFS;
1473 unsigned int offset = 0x200 + i * 0x80;
1475 pdc_sata_setup_port(&ap->ioaddr, base + offset);
1477 ata_port_pbar_desc(ap, PDC_MMIO_BAR, -1, "mmio");
1478 ata_port_pbar_desc(ap, PDC_DIMM_BAR, -1, "dimm");
1479 ata_port_pbar_desc(ap, PDC_MMIO_BAR, offset, "port");
1482 /* configure and activate */
1483 rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
1486 rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
1490 if (pdc20621_dimm_init(host))
1492 pdc_20621_init(host);
1494 pci_set_master(pdev);
1495 return ata_host_activate(host, pdev->irq, pdc20621_interrupt,
1496 IRQF_SHARED, &pdc_sata_sht);
1499 module_pci_driver(pdc_sata_pci_driver);
1501 MODULE_AUTHOR("Jeff Garzik");
1502 MODULE_DESCRIPTION("Promise SATA low-level driver");
1503 MODULE_LICENSE("GPL");
1504 MODULE_DEVICE_TABLE(pci, pdc_sata_pci_tbl);
1505 MODULE_VERSION(DRV_VERSION);