2 * sata_sx4.c - Promise SATA
4 * Maintained by: Jeff Garzik <jgarzik@pobox.com>
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/init.h>
85 #include <linux/blkdev.h>
86 #include <linux/delay.h>
87 #include <linux/interrupt.h>
88 #include <linux/device.h>
89 #include <scsi/scsi_host.h>
90 #include <scsi/scsi_cmnd.h>
91 #include <linux/libata.h>
92 #include "sata_promise.h"
94 #define DRV_NAME "sata_sx4"
95 #define DRV_VERSION "0.12"
102 PDC_PRD_TBL = 0x44, /* Direct command DMA table addr */
104 PDC_PKT_SUBMIT = 0x40, /* Command packet pointer addr */
105 PDC_HDMA_PKT_SUBMIT = 0x100, /* Host DMA packet pointer addr */
106 PDC_INT_SEQMASK = 0x40, /* Mask of asserted SEQ INTs */
107 PDC_HDMA_CTLSTAT = 0x12C, /* Host DMA control / status */
109 PDC_CTLSTAT = 0x60, /* IDEn control / status */
111 PDC_20621_SEQCTL = 0x400,
112 PDC_20621_SEQMASK = 0x480,
113 PDC_20621_GENERAL_CTL = 0x484,
114 PDC_20621_PAGE_SIZE = (32 * 1024),
116 /* chosen, not constant, values; we design our own DIMM mem map */
117 PDC_20621_DIMM_WINDOW = 0x0C, /* page# for 32K DIMM window */
118 PDC_20621_DIMM_BASE = 0x00200000,
119 PDC_20621_DIMM_DATA = (64 * 1024),
120 PDC_DIMM_DATA_STEP = (256 * 1024),
121 PDC_DIMM_WINDOW_STEP = (8 * 1024),
122 PDC_DIMM_HOST_PRD = (6 * 1024),
123 PDC_DIMM_HOST_PKT = (128 * 0),
124 PDC_DIMM_HPKT_PRD = (128 * 1),
125 PDC_DIMM_ATA_PKT = (128 * 2),
126 PDC_DIMM_APKT_PRD = (128 * 3),
127 PDC_DIMM_HEADER_SZ = PDC_DIMM_APKT_PRD + 128,
128 PDC_PAGE_WINDOW = 0x40,
129 PDC_PAGE_DATA = PDC_PAGE_WINDOW +
130 (PDC_20621_DIMM_DATA / PDC_20621_PAGE_SIZE),
131 PDC_PAGE_SET = PDC_DIMM_DATA_STEP / PDC_20621_PAGE_SIZE,
133 PDC_CHIP0_OFS = 0xC0000, /* offset of chip #0 */
135 PDC_20621_ERR_MASK = (1<<19) | (1<<20) | (1<<21) | (1<<22) |
138 board_20621 = 0, /* FastTrak S150 SX4 */
140 PDC_MASK_INT = (1 << 10), /* HDMA/ATA mask int */
141 PDC_RESET = (1 << 11), /* HDMA/ATA reset */
142 PDC_DMA_ENABLE = (1 << 7), /* DMA start/stop */
145 PDC_HDMA_Q_MASK = (PDC_MAX_HDMA - 1),
147 PDC_DIMM0_SPD_DEV_ADDRESS = 0x50,
148 PDC_DIMM1_SPD_DEV_ADDRESS = 0x51,
149 PDC_I2C_CONTROL = 0x48,
150 PDC_I2C_ADDR_DATA = 0x4C,
151 PDC_DIMM0_CONTROL = 0x80,
152 PDC_DIMM1_CONTROL = 0x84,
153 PDC_SDRAM_CONTROL = 0x88,
154 PDC_I2C_WRITE = 0, /* master -> slave */
155 PDC_I2C_READ = (1 << 6), /* master <- slave */
156 PDC_I2C_START = (1 << 7), /* start I2C proto */
157 PDC_I2C_MASK_INT = (1 << 5), /* mask I2C interrupt */
158 PDC_I2C_COMPLETE = (1 << 16), /* I2C normal compl. */
159 PDC_I2C_NO_ACK = (1 << 20), /* slave no-ack addr */
160 PDC_DIMM_SPD_SUBADDRESS_START = 0x00,
161 PDC_DIMM_SPD_SUBADDRESS_END = 0x7F,
162 PDC_DIMM_SPD_ROW_NUM = 3,
163 PDC_DIMM_SPD_COLUMN_NUM = 4,
164 PDC_DIMM_SPD_MODULE_ROW = 5,
165 PDC_DIMM_SPD_TYPE = 11,
166 PDC_DIMM_SPD_FRESH_RATE = 12,
167 PDC_DIMM_SPD_BANK_NUM = 17,
168 PDC_DIMM_SPD_CAS_LATENCY = 18,
169 PDC_DIMM_SPD_ATTRIBUTE = 21,
170 PDC_DIMM_SPD_ROW_PRE_CHARGE = 27,
171 PDC_DIMM_SPD_ROW_ACTIVE_DELAY = 28,
172 PDC_DIMM_SPD_RAS_CAS_DELAY = 29,
173 PDC_DIMM_SPD_ACTIVE_PRECHARGE = 30,
174 PDC_DIMM_SPD_SYSTEM_FREQ = 126,
175 PDC_CTL_STATUS = 0x08,
176 PDC_DIMM_WINDOW_CTLR = 0x0C,
177 PDC_TIME_CONTROL = 0x3C,
178 PDC_TIME_PERIOD = 0x40,
179 PDC_TIME_COUNTER = 0x44,
180 PDC_GENERAL_CTLR = 0x484,
181 PCI_PLL_INIT = 0x8A531824,
182 PCI_X_TCOUNT = 0xEE1E5CFF,
184 /* PDC_TIME_CONTROL bits */
185 PDC_TIMER_BUZZER = (1 << 10),
186 PDC_TIMER_MODE_PERIODIC = 0, /* bits 9:8 == 00 */
187 PDC_TIMER_MODE_ONCE = (1 << 8), /* bits 9:8 == 01 */
188 PDC_TIMER_ENABLE = (1 << 7),
189 PDC_TIMER_MASK_INT = (1 << 5),
190 PDC_TIMER_SEQ_MASK = 0x1f, /* SEQ ID for timer */
191 PDC_TIMER_DEFAULT = PDC_TIMER_MODE_ONCE |
196 #define ECC_ERASE_BUF_SZ (128 * 1024)
198 struct pdc_port_priv {
199 u8 dimm_buf[(ATA_PRD_SZ * ATA_MAX_PRD) + 512];
204 struct pdc_host_priv {
205 unsigned int doing_hdma;
206 unsigned int hdma_prod;
207 unsigned int hdma_cons;
209 struct ata_queued_cmd *qc;
211 unsigned long pkt_ofs;
216 static int pdc_sata_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
217 static void pdc_error_handler(struct ata_port *ap);
218 static void pdc_freeze(struct ata_port *ap);
219 static void pdc_thaw(struct ata_port *ap);
220 static int pdc_port_start(struct ata_port *ap);
221 static void pdc20621_qc_prep(struct ata_queued_cmd *qc);
222 static void pdc_tf_load_mmio(struct ata_port *ap, const struct ata_taskfile *tf);
223 static void pdc_exec_command_mmio(struct ata_port *ap, const struct ata_taskfile *tf);
224 static unsigned int pdc20621_dimm_init(struct ata_host *host);
225 static int pdc20621_detect_dimm(struct ata_host *host);
226 static unsigned int pdc20621_i2c_read(struct ata_host *host,
227 u32 device, u32 subaddr, u32 *pdata);
228 static int pdc20621_prog_dimm0(struct ata_host *host);
229 static unsigned int pdc20621_prog_dimm_global(struct ata_host *host);
230 #ifdef ATA_VERBOSE_DEBUG
231 static void pdc20621_get_from_dimm(struct ata_host *host,
232 void *psource, u32 offset, u32 size);
234 static void pdc20621_put_to_dimm(struct ata_host *host,
235 void *psource, u32 offset, u32 size);
236 static void pdc20621_irq_clear(struct ata_port *ap);
237 static unsigned int pdc20621_qc_issue(struct ata_queued_cmd *qc);
238 static int pdc_softreset(struct ata_link *link, unsigned int *class,
239 unsigned long deadline);
240 static void pdc_post_internal_cmd(struct ata_queued_cmd *qc);
241 static int pdc_check_atapi_dma(struct ata_queued_cmd *qc);
244 static struct scsi_host_template pdc_sata_sht = {
245 ATA_BASE_SHT(DRV_NAME),
246 .sg_tablesize = LIBATA_MAX_PRD,
247 .dma_boundary = ATA_DMA_BOUNDARY,
250 /* TODO: inherit from base port_ops after converting to new EH */
251 static struct ata_port_operations pdc_20621_ops = {
252 .inherits = &ata_sff_port_ops,
254 .check_atapi_dma = pdc_check_atapi_dma,
255 .qc_prep = pdc20621_qc_prep,
256 .qc_issue = pdc20621_qc_issue,
258 .freeze = pdc_freeze,
260 .softreset = pdc_softreset,
261 .error_handler = pdc_error_handler,
262 .lost_interrupt = ATA_OP_NULL,
263 .post_internal_cmd = pdc_post_internal_cmd,
265 .port_start = pdc_port_start,
267 .sff_tf_load = pdc_tf_load_mmio,
268 .sff_exec_command = pdc_exec_command_mmio,
269 .sff_irq_clear = pdc20621_irq_clear,
272 static const struct ata_port_info pdc_port_info[] = {
275 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
276 ATA_FLAG_SRST | ATA_FLAG_MMIO |
277 ATA_FLAG_NO_ATAPI | 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;
306 rc = ata_port_start(ap);
310 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
314 pp->pkt = dmam_alloc_coherent(dev, 128, &pp->pkt_dma, GFP_KERNEL);
318 ap->private_data = pp;
323 static inline void pdc20621_ata_sg(struct ata_taskfile *tf, u8 *buf,
325 unsigned int total_len)
328 unsigned int dw = PDC_DIMM_APKT_PRD >> 2;
329 __le32 *buf32 = (__le32 *) buf;
331 /* output ATA packet S/G table */
332 addr = PDC_20621_DIMM_BASE + PDC_20621_DIMM_DATA +
333 (PDC_DIMM_DATA_STEP * portno);
334 VPRINTK("ATA sg addr 0x%x, %d\n", addr, addr);
335 buf32[dw] = cpu_to_le32(addr);
336 buf32[dw + 1] = cpu_to_le32(total_len | ATA_PRD_EOT);
338 VPRINTK("ATA PSG @ %x == (0x%x, 0x%x)\n",
339 PDC_20621_DIMM_BASE +
340 (PDC_DIMM_WINDOW_STEP * portno) +
342 buf32[dw], buf32[dw + 1]);
345 static inline void pdc20621_host_sg(struct ata_taskfile *tf, u8 *buf,
347 unsigned int total_len)
350 unsigned int dw = PDC_DIMM_HPKT_PRD >> 2;
351 __le32 *buf32 = (__le32 *) buf;
353 /* output Host DMA packet S/G table */
354 addr = PDC_20621_DIMM_BASE + PDC_20621_DIMM_DATA +
355 (PDC_DIMM_DATA_STEP * portno);
357 buf32[dw] = cpu_to_le32(addr);
358 buf32[dw + 1] = cpu_to_le32(total_len | ATA_PRD_EOT);
360 VPRINTK("HOST PSG @ %x == (0x%x, 0x%x)\n",
361 PDC_20621_DIMM_BASE +
362 (PDC_DIMM_WINDOW_STEP * portno) +
364 buf32[dw], buf32[dw + 1]);
367 static inline unsigned int pdc20621_ata_pkt(struct ata_taskfile *tf,
368 unsigned int devno, u8 *buf,
372 __le32 *buf32 = (__le32 *) buf;
375 unsigned int dimm_sg = PDC_20621_DIMM_BASE +
376 (PDC_DIMM_WINDOW_STEP * portno) +
378 VPRINTK("ENTER, dimm_sg == 0x%x, %d\n", dimm_sg, dimm_sg);
380 i = PDC_DIMM_ATA_PKT;
385 if ((tf->protocol == ATA_PROT_DMA) && (!(tf->flags & ATA_TFLAG_WRITE)))
386 buf[i++] = PDC_PKT_READ;
387 else if (tf->protocol == ATA_PROT_NODATA)
388 buf[i++] = PDC_PKT_NODATA;
391 buf[i++] = 0; /* reserved */
392 buf[i++] = portno + 1; /* seq. id */
393 buf[i++] = 0xff; /* delay seq. id */
395 /* dimm dma S/G, and next-pkt */
397 if (tf->protocol == ATA_PROT_NODATA)
400 buf32[dw] = cpu_to_le32(dimm_sg);
405 dev_reg = ATA_DEVICE_OBS;
407 dev_reg = ATA_DEVICE_OBS | ATA_DEV1;
410 buf[i++] = (1 << 5) | PDC_PKT_CLEAR_BSY | ATA_REG_DEVICE;
413 /* device control register */
414 buf[i++] = (1 << 5) | PDC_REG_DEVCTL;
420 static inline void pdc20621_host_pkt(struct ata_taskfile *tf, u8 *buf,
425 __le32 *buf32 = (__le32 *) buf;
427 unsigned int host_sg = PDC_20621_DIMM_BASE +
428 (PDC_DIMM_WINDOW_STEP * portno) +
430 unsigned int dimm_sg = PDC_20621_DIMM_BASE +
431 (PDC_DIMM_WINDOW_STEP * portno) +
433 VPRINTK("ENTER, dimm_sg == 0x%x, %d\n", dimm_sg, dimm_sg);
434 VPRINTK("host_sg == 0x%x, %d\n", host_sg, host_sg);
436 dw = PDC_DIMM_HOST_PKT >> 2;
439 * Set up Host DMA packet
441 if ((tf->protocol == ATA_PROT_DMA) && (!(tf->flags & ATA_TFLAG_WRITE)))
445 tmp |= ((portno + 1 + 4) << 16); /* seq. id */
446 tmp |= (0xff << 24); /* delay seq. id */
447 buf32[dw + 0] = cpu_to_le32(tmp);
448 buf32[dw + 1] = cpu_to_le32(host_sg);
449 buf32[dw + 2] = cpu_to_le32(dimm_sg);
452 VPRINTK("HOST PKT @ %x == (0x%x 0x%x 0x%x 0x%x)\n",
453 PDC_20621_DIMM_BASE + (PDC_DIMM_WINDOW_STEP * portno) +
461 static void pdc20621_dma_prep(struct ata_queued_cmd *qc)
463 struct scatterlist *sg;
464 struct ata_port *ap = qc->ap;
465 struct pdc_port_priv *pp = ap->private_data;
466 void __iomem *mmio = ap->host->iomap[PDC_MMIO_BAR];
467 void __iomem *dimm_mmio = ap->host->iomap[PDC_DIMM_BAR];
468 unsigned int portno = ap->port_no;
469 unsigned int i, si, idx, total_len = 0, sgt_len;
470 __le32 *buf = (__le32 *) &pp->dimm_buf[PDC_DIMM_HEADER_SZ];
472 WARN_ON(!(qc->flags & ATA_QCFLAG_DMAMAP));
474 VPRINTK("ata%u: ENTER\n", ap->print_id);
476 /* hard-code chip #0 */
477 mmio += PDC_CHIP0_OFS;
483 for_each_sg(qc->sg, sg, qc->n_elem, si) {
484 buf[idx++] = cpu_to_le32(sg_dma_address(sg));
485 buf[idx++] = cpu_to_le32(sg_dma_len(sg));
486 total_len += sg_dma_len(sg);
488 buf[idx - 1] |= cpu_to_le32(ATA_PRD_EOT);
492 * Build ATA, host DMA packets
494 pdc20621_host_sg(&qc->tf, &pp->dimm_buf[0], portno, total_len);
495 pdc20621_host_pkt(&qc->tf, &pp->dimm_buf[0], portno);
497 pdc20621_ata_sg(&qc->tf, &pp->dimm_buf[0], portno, total_len);
498 i = pdc20621_ata_pkt(&qc->tf, qc->dev->devno, &pp->dimm_buf[0], portno);
500 if (qc->tf.flags & ATA_TFLAG_LBA48)
501 i = pdc_prep_lba48(&qc->tf, &pp->dimm_buf[0], i);
503 i = pdc_prep_lba28(&qc->tf, &pp->dimm_buf[0], i);
505 pdc_pkt_footer(&qc->tf, &pp->dimm_buf[0], i);
507 /* copy three S/G tables and two packets to DIMM MMIO window */
508 memcpy_toio(dimm_mmio + (portno * PDC_DIMM_WINDOW_STEP),
509 &pp->dimm_buf, PDC_DIMM_HEADER_SZ);
510 memcpy_toio(dimm_mmio + (portno * PDC_DIMM_WINDOW_STEP) +
512 &pp->dimm_buf[PDC_DIMM_HEADER_SZ], sgt_len);
514 /* force host FIFO dump */
515 writel(0x00000001, mmio + PDC_20621_GENERAL_CTL);
517 readl(dimm_mmio); /* MMIO PCI posting flush */
519 VPRINTK("ata pkt buf ofs %u, prd size %u, mmio copied\n", i, sgt_len);
522 static void pdc20621_nodata_prep(struct ata_queued_cmd *qc)
524 struct ata_port *ap = qc->ap;
525 struct pdc_port_priv *pp = ap->private_data;
526 void __iomem *mmio = ap->host->iomap[PDC_MMIO_BAR];
527 void __iomem *dimm_mmio = ap->host->iomap[PDC_DIMM_BAR];
528 unsigned int portno = ap->port_no;
531 VPRINTK("ata%u: ENTER\n", ap->print_id);
533 /* hard-code chip #0 */
534 mmio += PDC_CHIP0_OFS;
536 i = pdc20621_ata_pkt(&qc->tf, qc->dev->devno, &pp->dimm_buf[0], portno);
538 if (qc->tf.flags & ATA_TFLAG_LBA48)
539 i = pdc_prep_lba48(&qc->tf, &pp->dimm_buf[0], i);
541 i = pdc_prep_lba28(&qc->tf, &pp->dimm_buf[0], i);
543 pdc_pkt_footer(&qc->tf, &pp->dimm_buf[0], i);
545 /* copy three S/G tables and two packets to DIMM MMIO window */
546 memcpy_toio(dimm_mmio + (portno * PDC_DIMM_WINDOW_STEP),
547 &pp->dimm_buf, PDC_DIMM_HEADER_SZ);
549 /* force host FIFO dump */
550 writel(0x00000001, mmio + PDC_20621_GENERAL_CTL);
552 readl(dimm_mmio); /* MMIO PCI posting flush */
554 VPRINTK("ata pkt buf ofs %u, mmio copied\n", i);
557 static void pdc20621_qc_prep(struct ata_queued_cmd *qc)
559 switch (qc->tf.protocol) {
561 pdc20621_dma_prep(qc);
563 case ATA_PROT_NODATA:
564 pdc20621_nodata_prep(qc);
571 static void __pdc20621_push_hdma(struct ata_queued_cmd *qc,
575 struct ata_port *ap = qc->ap;
576 struct ata_host *host = ap->host;
577 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
579 /* hard-code chip #0 */
580 mmio += PDC_CHIP0_OFS;
582 writel(0x00000001, mmio + PDC_20621_SEQCTL + (seq * 4));
583 readl(mmio + PDC_20621_SEQCTL + (seq * 4)); /* flush */
585 writel(pkt_ofs, mmio + PDC_HDMA_PKT_SUBMIT);
586 readl(mmio + PDC_HDMA_PKT_SUBMIT); /* flush */
589 static void pdc20621_push_hdma(struct ata_queued_cmd *qc,
593 struct ata_port *ap = qc->ap;
594 struct pdc_host_priv *pp = ap->host->private_data;
595 unsigned int idx = pp->hdma_prod & PDC_HDMA_Q_MASK;
597 if (!pp->doing_hdma) {
598 __pdc20621_push_hdma(qc, seq, pkt_ofs);
603 pp->hdma[idx].qc = qc;
604 pp->hdma[idx].seq = seq;
605 pp->hdma[idx].pkt_ofs = pkt_ofs;
609 static void pdc20621_pop_hdma(struct ata_queued_cmd *qc)
611 struct ata_port *ap = qc->ap;
612 struct pdc_host_priv *pp = ap->host->private_data;
613 unsigned int idx = pp->hdma_cons & PDC_HDMA_Q_MASK;
615 /* if nothing on queue, we're done */
616 if (pp->hdma_prod == pp->hdma_cons) {
621 __pdc20621_push_hdma(pp->hdma[idx].qc, pp->hdma[idx].seq,
622 pp->hdma[idx].pkt_ofs);
626 #ifdef ATA_VERBOSE_DEBUG
627 static void pdc20621_dump_hdma(struct ata_queued_cmd *qc)
629 struct ata_port *ap = qc->ap;
630 unsigned int port_no = ap->port_no;
631 void __iomem *dimm_mmio = ap->host->iomap[PDC_DIMM_BAR];
633 dimm_mmio += (port_no * PDC_DIMM_WINDOW_STEP);
634 dimm_mmio += PDC_DIMM_HOST_PKT;
636 printk(KERN_ERR "HDMA[0] == 0x%08X\n", readl(dimm_mmio));
637 printk(KERN_ERR "HDMA[1] == 0x%08X\n", readl(dimm_mmio + 4));
638 printk(KERN_ERR "HDMA[2] == 0x%08X\n", readl(dimm_mmio + 8));
639 printk(KERN_ERR "HDMA[3] == 0x%08X\n", readl(dimm_mmio + 12));
642 static inline void pdc20621_dump_hdma(struct ata_queued_cmd *qc) { }
643 #endif /* ATA_VERBOSE_DEBUG */
645 static void pdc20621_packet_start(struct ata_queued_cmd *qc)
647 struct ata_port *ap = qc->ap;
648 struct ata_host *host = ap->host;
649 unsigned int port_no = ap->port_no;
650 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
651 unsigned int rw = (qc->tf.flags & ATA_TFLAG_WRITE);
652 u8 seq = (u8) (port_no + 1);
653 unsigned int port_ofs;
655 /* hard-code chip #0 */
656 mmio += PDC_CHIP0_OFS;
658 VPRINTK("ata%u: ENTER\n", ap->print_id);
660 wmb(); /* flush PRD, pkt writes */
662 port_ofs = PDC_20621_DIMM_BASE + (PDC_DIMM_WINDOW_STEP * port_no);
664 /* if writing, we (1) DMA to DIMM, then (2) do ATA command */
665 if (rw && qc->tf.protocol == ATA_PROT_DMA) {
668 pdc20621_dump_hdma(qc);
669 pdc20621_push_hdma(qc, seq, port_ofs + PDC_DIMM_HOST_PKT);
670 VPRINTK("queued ofs 0x%x (%u), seq %u\n",
671 port_ofs + PDC_DIMM_HOST_PKT,
672 port_ofs + PDC_DIMM_HOST_PKT,
675 writel(0x00000001, mmio + PDC_20621_SEQCTL + (seq * 4));
676 readl(mmio + PDC_20621_SEQCTL + (seq * 4)); /* flush */
678 writel(port_ofs + PDC_DIMM_ATA_PKT,
679 ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT);
680 readl(ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT);
681 VPRINTK("submitted ofs 0x%x (%u), seq %u\n",
682 port_ofs + PDC_DIMM_ATA_PKT,
683 port_ofs + PDC_DIMM_ATA_PKT,
688 static unsigned int pdc20621_qc_issue(struct ata_queued_cmd *qc)
690 switch (qc->tf.protocol) {
691 case ATA_PROT_NODATA:
692 if (qc->tf.flags & ATA_TFLAG_POLLING)
696 pdc20621_packet_start(qc);
707 return ata_sff_qc_issue(qc);
710 static inline unsigned int pdc20621_host_intr(struct ata_port *ap,
711 struct ata_queued_cmd *qc,
712 unsigned int doing_hdma,
715 unsigned int port_no = ap->port_no;
716 unsigned int port_ofs =
717 PDC_20621_DIMM_BASE + (PDC_DIMM_WINDOW_STEP * port_no);
719 unsigned int handled = 0;
723 if ((qc->tf.protocol == ATA_PROT_DMA) && /* read */
724 (!(qc->tf.flags & ATA_TFLAG_WRITE))) {
726 /* step two - DMA from DIMM to host */
728 VPRINTK("ata%u: read hdma, 0x%x 0x%x\n", ap->print_id,
729 readl(mmio + 0x104), readl(mmio + PDC_HDMA_CTLSTAT));
730 /* get drive status; clear intr; complete txn */
731 qc->err_mask |= ac_err_mask(ata_wait_idle(ap));
733 pdc20621_pop_hdma(qc);
736 /* step one - exec ATA command */
738 u8 seq = (u8) (port_no + 1 + 4);
739 VPRINTK("ata%u: read ata, 0x%x 0x%x\n", ap->print_id,
740 readl(mmio + 0x104), readl(mmio + PDC_HDMA_CTLSTAT));
742 /* submit hdma pkt */
743 pdc20621_dump_hdma(qc);
744 pdc20621_push_hdma(qc, seq,
745 port_ofs + PDC_DIMM_HOST_PKT);
749 } else if (qc->tf.protocol == ATA_PROT_DMA) { /* write */
751 /* step one - DMA from host to DIMM */
753 u8 seq = (u8) (port_no + 1);
754 VPRINTK("ata%u: write hdma, 0x%x 0x%x\n", ap->print_id,
755 readl(mmio + 0x104), readl(mmio + PDC_HDMA_CTLSTAT));
758 writel(0x00000001, mmio + PDC_20621_SEQCTL + (seq * 4));
759 readl(mmio + PDC_20621_SEQCTL + (seq * 4));
760 writel(port_ofs + PDC_DIMM_ATA_PKT,
761 ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT);
762 readl(ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT);
765 /* step two - execute ATA command */
767 VPRINTK("ata%u: write ata, 0x%x 0x%x\n", ap->print_id,
768 readl(mmio + 0x104), readl(mmio + PDC_HDMA_CTLSTAT));
769 /* get drive status; clear intr; complete txn */
770 qc->err_mask |= ac_err_mask(ata_wait_idle(ap));
772 pdc20621_pop_hdma(qc);
776 /* command completion, but no data xfer */
777 } else if (qc->tf.protocol == ATA_PROT_NODATA) {
779 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
780 DPRINTK("BUS_NODATA (drv_stat 0x%X)\n", status);
781 qc->err_mask |= ac_err_mask(status);
786 ap->stats.idle_irq++;
792 static void pdc20621_irq_clear(struct ata_port *ap)
794 ioread8(ap->ioaddr.status_addr);
797 static irqreturn_t pdc20621_interrupt(int irq, void *dev_instance)
799 struct ata_host *host = dev_instance;
802 unsigned int i, tmp, port_no;
803 unsigned int handled = 0;
804 void __iomem *mmio_base;
808 if (!host || !host->iomap[PDC_MMIO_BAR]) {
809 VPRINTK("QUICK EXIT\n");
813 mmio_base = host->iomap[PDC_MMIO_BAR];
815 /* reading should also clear interrupts */
816 mmio_base += PDC_CHIP0_OFS;
817 mask = readl(mmio_base + PDC_20621_SEQMASK);
818 VPRINTK("mask == 0x%x\n", mask);
820 if (mask == 0xffffffff) {
821 VPRINTK("QUICK EXIT 2\n");
824 mask &= 0xffff; /* only 16 tags possible */
826 VPRINTK("QUICK EXIT 3\n");
830 spin_lock(&host->lock);
832 for (i = 1; i < 9; i++) {
836 if (port_no >= host->n_ports)
839 ap = host->ports[port_no];
840 tmp = mask & (1 << i);
841 VPRINTK("seq %u, port_no %u, ap %p, tmp %x\n", i, port_no, ap, tmp);
843 !(ap->flags & ATA_FLAG_DISABLED)) {
844 struct ata_queued_cmd *qc;
846 qc = ata_qc_from_tag(ap, ap->link.active_tag);
847 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING)))
848 handled += pdc20621_host_intr(ap, qc, (i > 4),
853 spin_unlock(&host->lock);
855 VPRINTK("mask == 0x%x\n", mask);
859 return IRQ_RETVAL(handled);
862 static void pdc_freeze(struct ata_port *ap)
864 void __iomem *mmio = ap->ioaddr.cmd_addr;
867 /* FIXME: if all 4 ATA engines are stopped, also stop HDMA engine */
869 tmp = readl(mmio + PDC_CTLSTAT);
871 tmp &= ~PDC_DMA_ENABLE;
872 writel(tmp, mmio + PDC_CTLSTAT);
873 readl(mmio + PDC_CTLSTAT); /* flush */
876 static void pdc_thaw(struct ata_port *ap)
878 void __iomem *mmio = ap->ioaddr.cmd_addr;
881 /* FIXME: start HDMA engine, if zero ATA engines running */
884 ioread8(ap->ioaddr.status_addr);
886 /* turn IRQ back on */
887 tmp = readl(mmio + PDC_CTLSTAT);
888 tmp &= ~PDC_MASK_INT;
889 writel(tmp, mmio + PDC_CTLSTAT);
890 readl(mmio + PDC_CTLSTAT); /* flush */
893 static void pdc_reset_port(struct ata_port *ap)
895 void __iomem *mmio = ap->ioaddr.cmd_addr + PDC_CTLSTAT;
899 /* FIXME: handle HDMA copy engine */
901 for (i = 11; i > 0; i--) {
914 readl(mmio); /* flush */
917 static int pdc_softreset(struct ata_link *link, unsigned int *class,
918 unsigned long deadline)
920 pdc_reset_port(link->ap);
921 return ata_sff_softreset(link, class, deadline);
924 static void pdc_error_handler(struct ata_port *ap)
926 if (!(ap->pflags & ATA_PFLAG_FROZEN))
929 ata_std_error_handler(ap);
932 static void pdc_post_internal_cmd(struct ata_queued_cmd *qc)
934 struct ata_port *ap = qc->ap;
936 /* make DMA engine forget about the failed command */
937 if (qc->flags & ATA_QCFLAG_FAILED)
941 static int pdc_check_atapi_dma(struct ata_queued_cmd *qc)
943 u8 *scsicmd = qc->scsicmd->cmnd;
944 int pio = 1; /* atapi dma off by default */
946 /* Whitelist commands that may use DMA. */
947 switch (scsicmd[0]) {
954 case 0xad: /* READ_DVD_STRUCTURE */
955 case 0xbe: /* READ_CD */
958 /* -45150 (FFFF4FA2) to -1 (FFFFFFFF) shall use PIO mode */
959 if (scsicmd[0] == WRITE_10) {
965 if (lba >= 0xFFFF4FA2)
971 static void pdc_tf_load_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_tf_load(ap, tf);
979 static void pdc_exec_command_mmio(struct ata_port *ap, const struct ata_taskfile *tf)
981 WARN_ON(tf->protocol == ATA_PROT_DMA ||
982 tf->protocol == ATAPI_PROT_DMA);
983 ata_sff_exec_command(ap, tf);
987 static void pdc_sata_setup_port(struct ata_ioports *port, void __iomem *base)
989 port->cmd_addr = base;
990 port->data_addr = base;
992 port->error_addr = base + 0x4;
993 port->nsect_addr = base + 0x8;
994 port->lbal_addr = base + 0xc;
995 port->lbam_addr = base + 0x10;
996 port->lbah_addr = base + 0x14;
997 port->device_addr = base + 0x18;
999 port->status_addr = base + 0x1c;
1000 port->altstatus_addr =
1001 port->ctl_addr = base + 0x38;
1005 #ifdef ATA_VERBOSE_DEBUG
1006 static void pdc20621_get_from_dimm(struct ata_host *host, void *psource,
1007 u32 offset, u32 size)
1013 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
1014 void __iomem *dimm_mmio = host->iomap[PDC_DIMM_BAR];
1016 /* hard-code chip #0 */
1017 mmio += PDC_CHIP0_OFS;
1020 window_size = 0x2000 * 4; /* 32K byte uchar size */
1021 idx = (u16) (offset / window_size);
1023 writel(0x01, mmio + PDC_GENERAL_CTLR);
1024 readl(mmio + PDC_GENERAL_CTLR);
1025 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
1026 readl(mmio + PDC_DIMM_WINDOW_CTLR);
1028 offset -= (idx * window_size);
1030 dist = ((long) (window_size - (offset + size))) >= 0 ? size :
1031 (long) (window_size - offset);
1032 memcpy_fromio((char *) psource, (char *) (dimm_mmio + offset / 4),
1037 for (; (long) size >= (long) window_size ;) {
1038 writel(0x01, mmio + PDC_GENERAL_CTLR);
1039 readl(mmio + PDC_GENERAL_CTLR);
1040 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
1041 readl(mmio + PDC_DIMM_WINDOW_CTLR);
1042 memcpy_fromio((char *) psource, (char *) (dimm_mmio),
1044 psource += window_size;
1045 size -= window_size;
1050 writel(0x01, mmio + PDC_GENERAL_CTLR);
1051 readl(mmio + PDC_GENERAL_CTLR);
1052 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
1053 readl(mmio + PDC_DIMM_WINDOW_CTLR);
1054 memcpy_fromio((char *) psource, (char *) (dimm_mmio),
1061 static void pdc20621_put_to_dimm(struct ata_host *host, void *psource,
1062 u32 offset, u32 size)
1068 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
1069 void __iomem *dimm_mmio = host->iomap[PDC_DIMM_BAR];
1071 /* hard-code chip #0 */
1072 mmio += PDC_CHIP0_OFS;
1075 window_size = 0x2000 * 4; /* 32K byte uchar size */
1076 idx = (u16) (offset / window_size);
1078 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
1079 readl(mmio + PDC_DIMM_WINDOW_CTLR);
1080 offset -= (idx * window_size);
1082 dist = ((long)(s32)(window_size - (offset + size))) >= 0 ? size :
1083 (long) (window_size - offset);
1084 memcpy_toio(dimm_mmio + offset / 4, psource, dist);
1085 writel(0x01, mmio + PDC_GENERAL_CTLR);
1086 readl(mmio + PDC_GENERAL_CTLR);
1090 for (; (long) size >= (long) window_size ;) {
1091 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
1092 readl(mmio + PDC_DIMM_WINDOW_CTLR);
1093 memcpy_toio(dimm_mmio, psource, window_size / 4);
1094 writel(0x01, mmio + PDC_GENERAL_CTLR);
1095 readl(mmio + PDC_GENERAL_CTLR);
1096 psource += window_size;
1097 size -= window_size;
1102 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
1103 readl(mmio + PDC_DIMM_WINDOW_CTLR);
1104 memcpy_toio(dimm_mmio, psource, size / 4);
1105 writel(0x01, mmio + PDC_GENERAL_CTLR);
1106 readl(mmio + PDC_GENERAL_CTLR);
1111 static unsigned int pdc20621_i2c_read(struct ata_host *host, u32 device,
1112 u32 subaddr, u32 *pdata)
1114 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
1119 /* hard-code chip #0 */
1120 mmio += PDC_CHIP0_OFS;
1122 i2creg |= device << 24;
1123 i2creg |= subaddr << 16;
1125 /* Set the device and subaddress */
1126 writel(i2creg, mmio + PDC_I2C_ADDR_DATA);
1127 readl(mmio + PDC_I2C_ADDR_DATA);
1129 /* Write Control to perform read operation, mask int */
1130 writel(PDC_I2C_READ | PDC_I2C_START | PDC_I2C_MASK_INT,
1131 mmio + PDC_I2C_CONTROL);
1133 for (count = 0; count <= 1000; count ++) {
1134 status = readl(mmio + PDC_I2C_CONTROL);
1135 if (status & PDC_I2C_COMPLETE) {
1136 status = readl(mmio + PDC_I2C_ADDR_DATA);
1138 } else if (count == 1000)
1142 *pdata = (status >> 8) & 0x000000ff;
1147 static int pdc20621_detect_dimm(struct ata_host *host)
1150 if (pdc20621_i2c_read(host, PDC_DIMM0_SPD_DEV_ADDRESS,
1151 PDC_DIMM_SPD_SYSTEM_FREQ, &data)) {
1157 if (pdc20621_i2c_read(host, PDC_DIMM0_SPD_DEV_ADDRESS, 9, &data)) {
1167 static int pdc20621_prog_dimm0(struct ata_host *host)
1173 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
1174 static const struct {
1177 } pdc_i2c_read_data [] = {
1178 { PDC_DIMM_SPD_TYPE, 11 },
1179 { PDC_DIMM_SPD_FRESH_RATE, 12 },
1180 { PDC_DIMM_SPD_COLUMN_NUM, 4 },
1181 { PDC_DIMM_SPD_ATTRIBUTE, 21 },
1182 { PDC_DIMM_SPD_ROW_NUM, 3 },
1183 { PDC_DIMM_SPD_BANK_NUM, 17 },
1184 { PDC_DIMM_SPD_MODULE_ROW, 5 },
1185 { PDC_DIMM_SPD_ROW_PRE_CHARGE, 27 },
1186 { PDC_DIMM_SPD_ROW_ACTIVE_DELAY, 28 },
1187 { PDC_DIMM_SPD_RAS_CAS_DELAY, 29 },
1188 { PDC_DIMM_SPD_ACTIVE_PRECHARGE, 30 },
1189 { PDC_DIMM_SPD_CAS_LATENCY, 18 },
1192 /* hard-code chip #0 */
1193 mmio += PDC_CHIP0_OFS;
1195 for (i = 0; i < ARRAY_SIZE(pdc_i2c_read_data); i++)
1196 pdc20621_i2c_read(host, PDC_DIMM0_SPD_DEV_ADDRESS,
1197 pdc_i2c_read_data[i].reg,
1198 &spd0[pdc_i2c_read_data[i].ofs]);
1200 data |= (spd0[4] - 8) | ((spd0[21] != 0) << 3) | ((spd0[3]-11) << 4);
1201 data |= ((spd0[17] / 4) << 6) | ((spd0[5] / 2) << 7) |
1202 ((((spd0[27] + 9) / 10) - 1) << 8) ;
1203 data |= (((((spd0[29] > spd0[28])
1204 ? spd0[29] : spd0[28]) + 9) / 10) - 1) << 10;
1205 data |= ((spd0[30] - spd0[29] + 9) / 10 - 2) << 12;
1207 if (spd0[18] & 0x08)
1208 data |= ((0x03) << 14);
1209 else if (spd0[18] & 0x04)
1210 data |= ((0x02) << 14);
1211 else if (spd0[18] & 0x01)
1212 data |= ((0x01) << 14);
1217 Calculate the size of bDIMMSize (power of 2) and
1218 merge the DIMM size by program start/end address.
1221 bdimmsize = spd0[4] + (spd0[5] / 2) + spd0[3] + (spd0[17] / 2) + 3;
1222 size = (1 << bdimmsize) >> 20; /* size = xxx(MB) */
1223 data |= (((size / 16) - 1) << 16);
1226 writel(data, mmio + PDC_DIMM0_CONTROL);
1227 readl(mmio + PDC_DIMM0_CONTROL);
1232 static unsigned int pdc20621_prog_dimm_global(struct ata_host *host)
1236 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
1238 /* hard-code chip #0 */
1239 mmio += PDC_CHIP0_OFS;
1242 Set To Default : DIMM Module Global Control Register (0x022259F1)
1243 DIMM Arbitration Disable (bit 20)
1244 DIMM Data/Control Output Driving Selection (bit12 - bit15)
1245 Refresh Enable (bit 17)
1249 writel(data, mmio + PDC_SDRAM_CONTROL);
1250 readl(mmio + PDC_SDRAM_CONTROL);
1252 /* Turn on for ECC */
1253 pdc20621_i2c_read(host, PDC_DIMM0_SPD_DEV_ADDRESS,
1254 PDC_DIMM_SPD_TYPE, &spd0);
1256 data |= (0x01 << 16);
1257 writel(data, mmio + PDC_SDRAM_CONTROL);
1258 readl(mmio + PDC_SDRAM_CONTROL);
1259 printk(KERN_ERR "Local DIMM ECC Enabled\n");
1262 /* DIMM Initialization Select/Enable (bit 18/19) */
1265 writel(data, mmio + PDC_SDRAM_CONTROL);
1268 for (i = 1; i <= 10; i++) { /* polling ~5 secs */
1269 data = readl(mmio + PDC_SDRAM_CONTROL);
1270 if (!(data & (1<<19))) {
1280 static unsigned int pdc20621_dimm_init(struct ata_host *host)
1282 int speed, size, length;
1283 u32 addr, spd0, pci_status;
1284 u32 time_period = 0;
1289 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
1291 /* hard-code chip #0 */
1292 mmio += PDC_CHIP0_OFS;
1294 /* Initialize PLL based upon PCI Bus Frequency */
1296 /* Initialize Time Period Register */
1297 writel(0xffffffff, mmio + PDC_TIME_PERIOD);
1298 time_period = readl(mmio + PDC_TIME_PERIOD);
1299 VPRINTK("Time Period Register (0x40): 0x%x\n", time_period);
1302 writel(PDC_TIMER_DEFAULT, mmio + PDC_TIME_CONTROL);
1303 readl(mmio + PDC_TIME_CONTROL);
1305 /* Wait 3 seconds */
1309 When timer is enabled, counter is decreased every internal
1313 tcount = readl(mmio + PDC_TIME_COUNTER);
1314 VPRINTK("Time Counter Register (0x44): 0x%x\n", tcount);
1317 If SX4 is on PCI-X bus, after 3 seconds, the timer counter
1318 register should be >= (0xffffffff - 3x10^8).
1320 if (tcount >= PCI_X_TCOUNT) {
1321 ticks = (time_period - tcount);
1322 VPRINTK("Num counters 0x%x (%d)\n", ticks, ticks);
1324 clock = (ticks / 300000);
1325 VPRINTK("10 * Internal clk = 0x%x (%d)\n", clock, clock);
1327 clock = (clock * 33);
1328 VPRINTK("10 * Internal clk * 33 = 0x%x (%d)\n", clock, clock);
1330 /* PLL F Param (bit 22:16) */
1331 fparam = (1400000 / clock) - 2;
1332 VPRINTK("PLL F Param: 0x%x (%d)\n", fparam, fparam);
1334 /* OD param = 0x2 (bit 31:30), R param = 0x5 (bit 29:25) */
1335 pci_status = (0x8a001824 | (fparam << 16));
1337 pci_status = PCI_PLL_INIT;
1339 /* Initialize PLL. */
1340 VPRINTK("pci_status: 0x%x\n", pci_status);
1341 writel(pci_status, mmio + PDC_CTL_STATUS);
1342 readl(mmio + PDC_CTL_STATUS);
1345 Read SPD of DIMM by I2C interface,
1346 and program the DIMM Module Controller.
1348 if (!(speed = pdc20621_detect_dimm(host))) {
1349 printk(KERN_ERR "Detect Local DIMM Fail\n");
1350 return 1; /* DIMM error */
1352 VPRINTK("Local DIMM Speed = %d\n", speed);
1354 /* Programming DIMM0 Module Control Register (index_CID0:80h) */
1355 size = pdc20621_prog_dimm0(host);
1356 VPRINTK("Local DIMM Size = %dMB\n", size);
1358 /* Programming DIMM Module Global Control Register (index_CID0:88h) */
1359 if (pdc20621_prog_dimm_global(host)) {
1360 printk(KERN_ERR "Programming DIMM Module Global Control Register Fail\n");
1364 #ifdef ATA_VERBOSE_DEBUG
1366 u8 test_parttern1[40] =
1367 {0x55,0xAA,'P','r','o','m','i','s','e',' ',
1368 'N','o','t',' ','Y','e','t',' ',
1369 'D','e','f','i','n','e','d',' ',
1371 '9','8','0','3','1','6','1','2',0,0};
1372 u8 test_parttern2[40] = {0};
1374 pdc20621_put_to_dimm(host, test_parttern2, 0x10040, 40);
1375 pdc20621_put_to_dimm(host, test_parttern2, 0x40, 40);
1377 pdc20621_put_to_dimm(host, test_parttern1, 0x10040, 40);
1378 pdc20621_get_from_dimm(host, test_parttern2, 0x40, 40);
1379 printk(KERN_ERR "%x, %x, %s\n", test_parttern2[0],
1380 test_parttern2[1], &(test_parttern2[2]));
1381 pdc20621_get_from_dimm(host, test_parttern2, 0x10040,
1383 printk(KERN_ERR "%x, %x, %s\n", test_parttern2[0],
1384 test_parttern2[1], &(test_parttern2[2]));
1386 pdc20621_put_to_dimm(host, test_parttern1, 0x40, 40);
1387 pdc20621_get_from_dimm(host, test_parttern2, 0x40, 40);
1388 printk(KERN_ERR "%x, %x, %s\n", test_parttern2[0],
1389 test_parttern2[1], &(test_parttern2[2]));
1393 /* ECC initiliazation. */
1395 pdc20621_i2c_read(host, PDC_DIMM0_SPD_DEV_ADDRESS,
1396 PDC_DIMM_SPD_TYPE, &spd0);
1399 VPRINTK("Start ECC initialization\n");
1401 length = size * 1024 * 1024;
1402 buf = kzalloc(ECC_ERASE_BUF_SZ, GFP_KERNEL);
1403 while (addr < length) {
1404 pdc20621_put_to_dimm(host, buf, addr,
1406 addr += ECC_ERASE_BUF_SZ;
1409 VPRINTK("Finish ECC initialization\n");
1415 static void pdc_20621_init(struct ata_host *host)
1418 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
1420 /* hard-code chip #0 */
1421 mmio += PDC_CHIP0_OFS;
1424 * Select page 0x40 for our 32k DIMM window
1426 tmp = readl(mmio + PDC_20621_DIMM_WINDOW) & 0xffff0000;
1427 tmp |= PDC_PAGE_WINDOW; /* page 40h; arbitrarily selected */
1428 writel(tmp, mmio + PDC_20621_DIMM_WINDOW);
1433 tmp = readl(mmio + PDC_HDMA_CTLSTAT);
1435 writel(tmp, mmio + PDC_HDMA_CTLSTAT);
1436 readl(mmio + PDC_HDMA_CTLSTAT); /* flush */
1440 tmp = readl(mmio + PDC_HDMA_CTLSTAT);
1442 writel(tmp, mmio + PDC_HDMA_CTLSTAT);
1443 readl(mmio + PDC_HDMA_CTLSTAT); /* flush */
1446 static int pdc_sata_init_one(struct pci_dev *pdev,
1447 const struct pci_device_id *ent)
1449 static int printed_version;
1450 const struct ata_port_info *ppi[] =
1451 { &pdc_port_info[ent->driver_data], NULL };
1452 struct ata_host *host;
1453 struct pdc_host_priv *hpriv;
1456 if (!printed_version++)
1457 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
1460 host = ata_host_alloc_pinfo(&pdev->dev, ppi, 4);
1461 hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL);
1462 if (!host || !hpriv)
1465 host->private_data = hpriv;
1467 /* acquire resources and fill host */
1468 rc = pcim_enable_device(pdev);
1472 rc = pcim_iomap_regions(pdev, (1 << PDC_MMIO_BAR) | (1 << PDC_DIMM_BAR),
1475 pcim_pin_device(pdev);
1478 host->iomap = pcim_iomap_table(pdev);
1480 for (i = 0; i < 4; i++) {
1481 struct ata_port *ap = host->ports[i];
1482 void __iomem *base = host->iomap[PDC_MMIO_BAR] + PDC_CHIP0_OFS;
1483 unsigned int offset = 0x200 + i * 0x80;
1485 pdc_sata_setup_port(&ap->ioaddr, base + offset);
1487 ata_port_pbar_desc(ap, PDC_MMIO_BAR, -1, "mmio");
1488 ata_port_pbar_desc(ap, PDC_DIMM_BAR, -1, "dimm");
1489 ata_port_pbar_desc(ap, PDC_MMIO_BAR, offset, "port");
1492 /* configure and activate */
1493 rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
1496 rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
1500 if (pdc20621_dimm_init(host))
1502 pdc_20621_init(host);
1504 pci_set_master(pdev);
1505 return ata_host_activate(host, pdev->irq, pdc20621_interrupt,
1506 IRQF_SHARED, &pdc_sata_sht);
1510 static int __init pdc_sata_init(void)
1512 return pci_register_driver(&pdc_sata_pci_driver);
1516 static void __exit pdc_sata_exit(void)
1518 pci_unregister_driver(&pdc_sata_pci_driver);
1522 MODULE_AUTHOR("Jeff Garzik");
1523 MODULE_DESCRIPTION("Promise SATA low-level driver");
1524 MODULE_LICENSE("GPL");
1525 MODULE_DEVICE_TABLE(pci, pdc_sata_pci_tbl);
1526 MODULE_VERSION(DRV_VERSION);
1528 module_init(pdc_sata_init);
1529 module_exit(pdc_sata_exit);