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 "0.11"
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 |
197 struct pdc_port_priv {
198 u8 dimm_buf[(ATA_PRD_SZ * ATA_MAX_PRD) + 512];
203 struct pdc_host_priv {
204 unsigned int doing_hdma;
205 unsigned int hdma_prod;
206 unsigned int hdma_cons;
208 struct ata_queued_cmd *qc;
210 unsigned long pkt_ofs;
215 static int pdc_sata_init_one (struct pci_dev *pdev, const struct pci_device_id *ent);
216 static void pdc_eng_timeout(struct ata_port *ap);
217 static void pdc_20621_phy_reset (struct ata_port *ap);
218 static int pdc_port_start(struct ata_port *ap);
219 static void pdc20621_qc_prep(struct ata_queued_cmd *qc);
220 static void pdc_tf_load_mmio(struct ata_port *ap, const struct ata_taskfile *tf);
221 static void pdc_exec_command_mmio(struct ata_port *ap, const struct ata_taskfile *tf);
222 static unsigned int pdc20621_dimm_init(struct ata_host *host);
223 static int pdc20621_detect_dimm(struct ata_host *host);
224 static unsigned int pdc20621_i2c_read(struct ata_host *host,
225 u32 device, u32 subaddr, u32 *pdata);
226 static int pdc20621_prog_dimm0(struct ata_host *host);
227 static unsigned int pdc20621_prog_dimm_global(struct ata_host *host);
228 #ifdef ATA_VERBOSE_DEBUG
229 static void pdc20621_get_from_dimm(struct ata_host *host,
230 void *psource, u32 offset, u32 size);
232 static void pdc20621_put_to_dimm(struct ata_host *host,
233 void *psource, u32 offset, u32 size);
234 static void pdc20621_irq_clear(struct ata_port *ap);
235 static unsigned int pdc20621_qc_issue_prot(struct ata_queued_cmd *qc);
238 static struct scsi_host_template pdc_sata_sht = {
239 .module = THIS_MODULE,
241 .ioctl = ata_scsi_ioctl,
242 .queuecommand = ata_scsi_queuecmd,
243 .can_queue = ATA_DEF_QUEUE,
244 .this_id = ATA_SHT_THIS_ID,
245 .sg_tablesize = LIBATA_MAX_PRD,
246 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
247 .emulated = ATA_SHT_EMULATED,
248 .use_clustering = ATA_SHT_USE_CLUSTERING,
249 .proc_name = DRV_NAME,
250 .dma_boundary = ATA_DMA_BOUNDARY,
251 .slave_configure = ata_scsi_slave_config,
252 .slave_destroy = ata_scsi_slave_destroy,
253 .bios_param = ata_std_bios_param,
256 static const struct ata_port_operations pdc_20621_ops = {
257 .port_disable = ata_port_disable,
258 .tf_load = pdc_tf_load_mmio,
259 .tf_read = ata_tf_read,
260 .check_status = ata_check_status,
261 .exec_command = pdc_exec_command_mmio,
262 .dev_select = ata_std_dev_select,
263 .phy_reset = pdc_20621_phy_reset,
264 .qc_prep = pdc20621_qc_prep,
265 .qc_issue = pdc20621_qc_issue_prot,
266 .data_xfer = ata_data_xfer,
267 .eng_timeout = pdc_eng_timeout,
268 .irq_clear = pdc20621_irq_clear,
269 .irq_on = ata_irq_on,
270 .irq_ack = ata_irq_ack,
271 .port_start = pdc_port_start,
274 static const struct ata_port_info pdc_port_info[] = {
277 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
278 ATA_FLAG_SRST | ATA_FLAG_MMIO |
279 ATA_FLAG_NO_ATAPI | ATA_FLAG_PIO_POLLING,
280 .pio_mask = 0x1f, /* pio0-4 */
281 .mwdma_mask = 0x07, /* mwdma0-2 */
282 .udma_mask = ATA_UDMA6,
283 .port_ops = &pdc_20621_ops,
288 static const struct pci_device_id pdc_sata_pci_tbl[] = {
289 { PCI_VDEVICE(PROMISE, 0x6622), board_20621 },
291 { } /* terminate list */
294 static struct pci_driver pdc_sata_pci_driver = {
296 .id_table = pdc_sata_pci_tbl,
297 .probe = pdc_sata_init_one,
298 .remove = ata_pci_remove_one,
302 static int pdc_port_start(struct ata_port *ap)
304 struct device *dev = ap->host->dev;
305 struct pdc_port_priv *pp;
308 rc = ata_port_start(ap);
312 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
316 pp->pkt = dmam_alloc_coherent(dev, 128, &pp->pkt_dma, GFP_KERNEL);
320 ap->private_data = pp;
325 static void pdc_20621_phy_reset (struct ata_port *ap)
328 ap->cbl = ATA_CBL_SATA;
333 static inline void pdc20621_ata_sg(struct ata_taskfile *tf, u8 *buf,
335 unsigned int total_len)
338 unsigned int dw = PDC_DIMM_APKT_PRD >> 2;
339 u32 *buf32 = (u32 *) buf;
341 /* output ATA packet S/G table */
342 addr = PDC_20621_DIMM_BASE + PDC_20621_DIMM_DATA +
343 (PDC_DIMM_DATA_STEP * portno);
344 VPRINTK("ATA sg addr 0x%x, %d\n", addr, addr);
345 buf32[dw] = cpu_to_le32(addr);
346 buf32[dw + 1] = cpu_to_le32(total_len | ATA_PRD_EOT);
348 VPRINTK("ATA PSG @ %x == (0x%x, 0x%x)\n",
349 PDC_20621_DIMM_BASE +
350 (PDC_DIMM_WINDOW_STEP * portno) +
352 buf32[dw], buf32[dw + 1]);
355 static inline void pdc20621_host_sg(struct ata_taskfile *tf, u8 *buf,
357 unsigned int total_len)
360 unsigned int dw = PDC_DIMM_HPKT_PRD >> 2;
361 u32 *buf32 = (u32 *) buf;
363 /* output Host DMA packet S/G table */
364 addr = PDC_20621_DIMM_BASE + PDC_20621_DIMM_DATA +
365 (PDC_DIMM_DATA_STEP * portno);
367 buf32[dw] = cpu_to_le32(addr);
368 buf32[dw + 1] = cpu_to_le32(total_len | ATA_PRD_EOT);
370 VPRINTK("HOST PSG @ %x == (0x%x, 0x%x)\n",
371 PDC_20621_DIMM_BASE +
372 (PDC_DIMM_WINDOW_STEP * portno) +
374 buf32[dw], buf32[dw + 1]);
377 static inline unsigned int pdc20621_ata_pkt(struct ata_taskfile *tf,
378 unsigned int devno, u8 *buf,
382 u32 *buf32 = (u32 *) buf;
385 unsigned int dimm_sg = PDC_20621_DIMM_BASE +
386 (PDC_DIMM_WINDOW_STEP * portno) +
388 VPRINTK("ENTER, dimm_sg == 0x%x, %d\n", dimm_sg, dimm_sg);
390 i = PDC_DIMM_ATA_PKT;
395 if ((tf->protocol == ATA_PROT_DMA) && (!(tf->flags & ATA_TFLAG_WRITE)))
396 buf[i++] = PDC_PKT_READ;
397 else if (tf->protocol == ATA_PROT_NODATA)
398 buf[i++] = PDC_PKT_NODATA;
401 buf[i++] = 0; /* reserved */
402 buf[i++] = portno + 1; /* seq. id */
403 buf[i++] = 0xff; /* delay seq. id */
405 /* dimm dma S/G, and next-pkt */
407 if (tf->protocol == ATA_PROT_NODATA)
410 buf32[dw] = cpu_to_le32(dimm_sg);
415 dev_reg = ATA_DEVICE_OBS;
417 dev_reg = ATA_DEVICE_OBS | ATA_DEV1;
420 buf[i++] = (1 << 5) | PDC_PKT_CLEAR_BSY | ATA_REG_DEVICE;
423 /* device control register */
424 buf[i++] = (1 << 5) | PDC_REG_DEVCTL;
430 static inline void pdc20621_host_pkt(struct ata_taskfile *tf, u8 *buf,
434 u32 tmp, *buf32 = (u32 *) buf;
436 unsigned int host_sg = PDC_20621_DIMM_BASE +
437 (PDC_DIMM_WINDOW_STEP * portno) +
439 unsigned int dimm_sg = PDC_20621_DIMM_BASE +
440 (PDC_DIMM_WINDOW_STEP * portno) +
442 VPRINTK("ENTER, dimm_sg == 0x%x, %d\n", dimm_sg, dimm_sg);
443 VPRINTK("host_sg == 0x%x, %d\n", host_sg, host_sg);
445 dw = PDC_DIMM_HOST_PKT >> 2;
448 * Set up Host DMA packet
450 if ((tf->protocol == ATA_PROT_DMA) && (!(tf->flags & ATA_TFLAG_WRITE)))
454 tmp |= ((portno + 1 + 4) << 16); /* seq. id */
455 tmp |= (0xff << 24); /* delay seq. id */
456 buf32[dw + 0] = cpu_to_le32(tmp);
457 buf32[dw + 1] = cpu_to_le32(host_sg);
458 buf32[dw + 2] = cpu_to_le32(dimm_sg);
461 VPRINTK("HOST PKT @ %x == (0x%x 0x%x 0x%x 0x%x)\n",
462 PDC_20621_DIMM_BASE + (PDC_DIMM_WINDOW_STEP * portno) +
470 static void pdc20621_dma_prep(struct ata_queued_cmd *qc)
472 struct scatterlist *sg;
473 struct ata_port *ap = qc->ap;
474 struct pdc_port_priv *pp = ap->private_data;
475 void __iomem *mmio = ap->host->iomap[PDC_MMIO_BAR];
476 void __iomem *dimm_mmio = ap->host->iomap[PDC_DIMM_BAR];
477 unsigned int portno = ap->port_no;
478 unsigned int i, idx, total_len = 0, sgt_len;
479 u32 *buf = (u32 *) &pp->dimm_buf[PDC_DIMM_HEADER_SZ];
481 WARN_ON(!(qc->flags & ATA_QCFLAG_DMAMAP));
483 VPRINTK("ata%u: ENTER\n", ap->print_id);
485 /* hard-code chip #0 */
486 mmio += PDC_CHIP0_OFS;
492 ata_for_each_sg(sg, qc) {
493 buf[idx++] = cpu_to_le32(sg_dma_address(sg));
494 buf[idx++] = cpu_to_le32(sg_dma_len(sg));
495 total_len += sg_dma_len(sg);
497 buf[idx - 1] |= cpu_to_le32(ATA_PRD_EOT);
501 * Build ATA, host DMA packets
503 pdc20621_host_sg(&qc->tf, &pp->dimm_buf[0], portno, total_len);
504 pdc20621_host_pkt(&qc->tf, &pp->dimm_buf[0], portno);
506 pdc20621_ata_sg(&qc->tf, &pp->dimm_buf[0], portno, total_len);
507 i = pdc20621_ata_pkt(&qc->tf, qc->dev->devno, &pp->dimm_buf[0], portno);
509 if (qc->tf.flags & ATA_TFLAG_LBA48)
510 i = pdc_prep_lba48(&qc->tf, &pp->dimm_buf[0], i);
512 i = pdc_prep_lba28(&qc->tf, &pp->dimm_buf[0], i);
514 pdc_pkt_footer(&qc->tf, &pp->dimm_buf[0], i);
516 /* copy three S/G tables and two packets to DIMM MMIO window */
517 memcpy_toio(dimm_mmio + (portno * PDC_DIMM_WINDOW_STEP),
518 &pp->dimm_buf, PDC_DIMM_HEADER_SZ);
519 memcpy_toio(dimm_mmio + (portno * PDC_DIMM_WINDOW_STEP) +
521 &pp->dimm_buf[PDC_DIMM_HEADER_SZ], sgt_len);
523 /* force host FIFO dump */
524 writel(0x00000001, mmio + PDC_20621_GENERAL_CTL);
526 readl(dimm_mmio); /* MMIO PCI posting flush */
528 VPRINTK("ata pkt buf ofs %u, prd size %u, mmio copied\n", i, sgt_len);
531 static void pdc20621_nodata_prep(struct ata_queued_cmd *qc)
533 struct ata_port *ap = qc->ap;
534 struct pdc_port_priv *pp = ap->private_data;
535 void __iomem *mmio = ap->host->iomap[PDC_MMIO_BAR];
536 void __iomem *dimm_mmio = ap->host->iomap[PDC_DIMM_BAR];
537 unsigned int portno = ap->port_no;
540 VPRINTK("ata%u: ENTER\n", ap->print_id);
542 /* hard-code chip #0 */
543 mmio += PDC_CHIP0_OFS;
545 i = pdc20621_ata_pkt(&qc->tf, qc->dev->devno, &pp->dimm_buf[0], portno);
547 if (qc->tf.flags & ATA_TFLAG_LBA48)
548 i = pdc_prep_lba48(&qc->tf, &pp->dimm_buf[0], i);
550 i = pdc_prep_lba28(&qc->tf, &pp->dimm_buf[0], i);
552 pdc_pkt_footer(&qc->tf, &pp->dimm_buf[0], i);
554 /* copy three S/G tables and two packets to DIMM MMIO window */
555 memcpy_toio(dimm_mmio + (portno * PDC_DIMM_WINDOW_STEP),
556 &pp->dimm_buf, PDC_DIMM_HEADER_SZ);
558 /* force host FIFO dump */
559 writel(0x00000001, mmio + PDC_20621_GENERAL_CTL);
561 readl(dimm_mmio); /* MMIO PCI posting flush */
563 VPRINTK("ata pkt buf ofs %u, mmio copied\n", i);
566 static void pdc20621_qc_prep(struct ata_queued_cmd *qc)
568 switch (qc->tf.protocol) {
570 pdc20621_dma_prep(qc);
572 case ATA_PROT_NODATA:
573 pdc20621_nodata_prep(qc);
580 static void __pdc20621_push_hdma(struct ata_queued_cmd *qc,
584 struct ata_port *ap = qc->ap;
585 struct ata_host *host = ap->host;
586 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
588 /* hard-code chip #0 */
589 mmio += PDC_CHIP0_OFS;
591 writel(0x00000001, mmio + PDC_20621_SEQCTL + (seq * 4));
592 readl(mmio + PDC_20621_SEQCTL + (seq * 4)); /* flush */
594 writel(pkt_ofs, mmio + PDC_HDMA_PKT_SUBMIT);
595 readl(mmio + PDC_HDMA_PKT_SUBMIT); /* flush */
598 static void pdc20621_push_hdma(struct ata_queued_cmd *qc,
602 struct ata_port *ap = qc->ap;
603 struct pdc_host_priv *pp = ap->host->private_data;
604 unsigned int idx = pp->hdma_prod & PDC_HDMA_Q_MASK;
606 if (!pp->doing_hdma) {
607 __pdc20621_push_hdma(qc, seq, pkt_ofs);
612 pp->hdma[idx].qc = qc;
613 pp->hdma[idx].seq = seq;
614 pp->hdma[idx].pkt_ofs = pkt_ofs;
618 static void pdc20621_pop_hdma(struct ata_queued_cmd *qc)
620 struct ata_port *ap = qc->ap;
621 struct pdc_host_priv *pp = ap->host->private_data;
622 unsigned int idx = pp->hdma_cons & PDC_HDMA_Q_MASK;
624 /* if nothing on queue, we're done */
625 if (pp->hdma_prod == pp->hdma_cons) {
630 __pdc20621_push_hdma(pp->hdma[idx].qc, pp->hdma[idx].seq,
631 pp->hdma[idx].pkt_ofs);
635 #ifdef ATA_VERBOSE_DEBUG
636 static void pdc20621_dump_hdma(struct ata_queued_cmd *qc)
638 struct ata_port *ap = qc->ap;
639 unsigned int port_no = ap->port_no;
640 void __iomem *dimm_mmio = ap->host->iomap[PDC_DIMM_BAR];
642 dimm_mmio += (port_no * PDC_DIMM_WINDOW_STEP);
643 dimm_mmio += PDC_DIMM_HOST_PKT;
645 printk(KERN_ERR "HDMA[0] == 0x%08X\n", readl(dimm_mmio));
646 printk(KERN_ERR "HDMA[1] == 0x%08X\n", readl(dimm_mmio + 4));
647 printk(KERN_ERR "HDMA[2] == 0x%08X\n", readl(dimm_mmio + 8));
648 printk(KERN_ERR "HDMA[3] == 0x%08X\n", readl(dimm_mmio + 12));
651 static inline void pdc20621_dump_hdma(struct ata_queued_cmd *qc) { }
652 #endif /* ATA_VERBOSE_DEBUG */
654 static void pdc20621_packet_start(struct ata_queued_cmd *qc)
656 struct ata_port *ap = qc->ap;
657 struct ata_host *host = ap->host;
658 unsigned int port_no = ap->port_no;
659 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
660 unsigned int rw = (qc->tf.flags & ATA_TFLAG_WRITE);
661 u8 seq = (u8) (port_no + 1);
662 unsigned int port_ofs;
664 /* hard-code chip #0 */
665 mmio += PDC_CHIP0_OFS;
667 VPRINTK("ata%u: ENTER\n", ap->print_id);
669 wmb(); /* flush PRD, pkt writes */
671 port_ofs = PDC_20621_DIMM_BASE + (PDC_DIMM_WINDOW_STEP * port_no);
673 /* if writing, we (1) DMA to DIMM, then (2) do ATA command */
674 if (rw && qc->tf.protocol == ATA_PROT_DMA) {
677 pdc20621_dump_hdma(qc);
678 pdc20621_push_hdma(qc, seq, port_ofs + PDC_DIMM_HOST_PKT);
679 VPRINTK("queued ofs 0x%x (%u), seq %u\n",
680 port_ofs + PDC_DIMM_HOST_PKT,
681 port_ofs + PDC_DIMM_HOST_PKT,
684 writel(0x00000001, mmio + PDC_20621_SEQCTL + (seq * 4));
685 readl(mmio + PDC_20621_SEQCTL + (seq * 4)); /* flush */
687 writel(port_ofs + PDC_DIMM_ATA_PKT,
688 ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT);
689 readl(ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT);
690 VPRINTK("submitted ofs 0x%x (%u), seq %u\n",
691 port_ofs + PDC_DIMM_ATA_PKT,
692 port_ofs + PDC_DIMM_ATA_PKT,
697 static unsigned int pdc20621_qc_issue_prot(struct ata_queued_cmd *qc)
699 switch (qc->tf.protocol) {
701 case ATA_PROT_NODATA:
702 pdc20621_packet_start(qc);
705 case ATA_PROT_ATAPI_DMA:
713 return ata_qc_issue_prot(qc);
716 static inline unsigned int pdc20621_host_intr( struct ata_port *ap,
717 struct ata_queued_cmd *qc,
718 unsigned int doing_hdma,
721 unsigned int port_no = ap->port_no;
722 unsigned int port_ofs =
723 PDC_20621_DIMM_BASE + (PDC_DIMM_WINDOW_STEP * port_no);
725 unsigned int handled = 0;
729 if ((qc->tf.protocol == ATA_PROT_DMA) && /* read */
730 (!(qc->tf.flags & ATA_TFLAG_WRITE))) {
732 /* step two - DMA from DIMM to host */
734 VPRINTK("ata%u: read hdma, 0x%x 0x%x\n", ap->print_id,
735 readl(mmio + 0x104), readl(mmio + PDC_HDMA_CTLSTAT));
736 /* get drive status; clear intr; complete txn */
737 qc->err_mask |= ac_err_mask(ata_wait_idle(ap));
739 pdc20621_pop_hdma(qc);
742 /* step one - exec ATA command */
744 u8 seq = (u8) (port_no + 1 + 4);
745 VPRINTK("ata%u: read ata, 0x%x 0x%x\n", ap->print_id,
746 readl(mmio + 0x104), readl(mmio + PDC_HDMA_CTLSTAT));
748 /* submit hdma pkt */
749 pdc20621_dump_hdma(qc);
750 pdc20621_push_hdma(qc, seq,
751 port_ofs + PDC_DIMM_HOST_PKT);
755 } else if (qc->tf.protocol == ATA_PROT_DMA) { /* write */
757 /* step one - DMA from host to DIMM */
759 u8 seq = (u8) (port_no + 1);
760 VPRINTK("ata%u: write hdma, 0x%x 0x%x\n", ap->print_id,
761 readl(mmio + 0x104), readl(mmio + PDC_HDMA_CTLSTAT));
764 writel(0x00000001, mmio + PDC_20621_SEQCTL + (seq * 4));
765 readl(mmio + PDC_20621_SEQCTL + (seq * 4));
766 writel(port_ofs + PDC_DIMM_ATA_PKT,
767 ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT);
768 readl(ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT);
771 /* step two - execute ATA command */
773 VPRINTK("ata%u: write ata, 0x%x 0x%x\n", ap->print_id,
774 readl(mmio + 0x104), readl(mmio + PDC_HDMA_CTLSTAT));
775 /* get drive status; clear intr; complete txn */
776 qc->err_mask |= ac_err_mask(ata_wait_idle(ap));
778 pdc20621_pop_hdma(qc);
782 /* command completion, but no data xfer */
783 } else if (qc->tf.protocol == ATA_PROT_NODATA) {
785 status = ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
786 DPRINTK("BUS_NODATA (drv_stat 0x%X)\n", status);
787 qc->err_mask |= ac_err_mask(status);
792 ap->stats.idle_irq++;
798 static void pdc20621_irq_clear(struct ata_port *ap)
800 struct ata_host *host = ap->host;
801 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
803 mmio += PDC_CHIP0_OFS;
805 readl(mmio + PDC_20621_SEQMASK);
808 static irqreturn_t pdc20621_interrupt (int irq, void *dev_instance)
810 struct ata_host *host = dev_instance;
813 unsigned int i, tmp, port_no;
814 unsigned int handled = 0;
815 void __iomem *mmio_base;
819 if (!host || !host->iomap[PDC_MMIO_BAR]) {
820 VPRINTK("QUICK EXIT\n");
824 mmio_base = host->iomap[PDC_MMIO_BAR];
826 /* reading should also clear interrupts */
827 mmio_base += PDC_CHIP0_OFS;
828 mask = readl(mmio_base + PDC_20621_SEQMASK);
829 VPRINTK("mask == 0x%x\n", mask);
831 if (mask == 0xffffffff) {
832 VPRINTK("QUICK EXIT 2\n");
835 mask &= 0xffff; /* only 16 tags possible */
837 VPRINTK("QUICK EXIT 3\n");
841 spin_lock(&host->lock);
843 for (i = 1; i < 9; i++) {
847 if (port_no >= host->n_ports)
850 ap = host->ports[port_no];
851 tmp = mask & (1 << i);
852 VPRINTK("seq %u, port_no %u, ap %p, tmp %x\n", i, port_no, ap, tmp);
854 !(ap->flags & ATA_FLAG_DISABLED)) {
855 struct ata_queued_cmd *qc;
857 qc = ata_qc_from_tag(ap, ap->active_tag);
858 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING)))
859 handled += pdc20621_host_intr(ap, qc, (i > 4),
864 spin_unlock(&host->lock);
866 VPRINTK("mask == 0x%x\n", mask);
870 return IRQ_RETVAL(handled);
873 static void pdc_eng_timeout(struct ata_port *ap)
876 struct ata_host *host = ap->host;
877 struct ata_queued_cmd *qc;
882 spin_lock_irqsave(&host->lock, flags);
884 qc = ata_qc_from_tag(ap, ap->active_tag);
886 switch (qc->tf.protocol) {
888 case ATA_PROT_NODATA:
889 ata_port_printk(ap, KERN_ERR, "command timeout\n");
890 qc->err_mask |= __ac_err_mask(ata_wait_idle(ap));
894 drv_stat = ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
896 ata_port_printk(ap, KERN_ERR,
897 "unknown timeout, cmd 0x%x stat 0x%x\n",
898 qc->tf.command, drv_stat);
900 qc->err_mask |= ac_err_mask(drv_stat);
904 spin_unlock_irqrestore(&host->lock, flags);
905 ata_eh_qc_complete(qc);
909 static void pdc_tf_load_mmio(struct ata_port *ap, const struct ata_taskfile *tf)
911 WARN_ON (tf->protocol == ATA_PROT_DMA ||
912 tf->protocol == ATA_PROT_NODATA);
917 static void pdc_exec_command_mmio(struct ata_port *ap, const struct ata_taskfile *tf)
919 WARN_ON (tf->protocol == ATA_PROT_DMA ||
920 tf->protocol == ATA_PROT_NODATA);
921 ata_exec_command(ap, tf);
925 static void pdc_sata_setup_port(struct ata_ioports *port, void __iomem *base)
927 port->cmd_addr = base;
928 port->data_addr = base;
930 port->error_addr = base + 0x4;
931 port->nsect_addr = base + 0x8;
932 port->lbal_addr = base + 0xc;
933 port->lbam_addr = base + 0x10;
934 port->lbah_addr = base + 0x14;
935 port->device_addr = base + 0x18;
937 port->status_addr = base + 0x1c;
938 port->altstatus_addr =
939 port->ctl_addr = base + 0x38;
943 #ifdef ATA_VERBOSE_DEBUG
944 static void pdc20621_get_from_dimm(struct ata_host *host, void *psource,
945 u32 offset, u32 size)
951 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
952 void __iomem *dimm_mmio = host->iomap[PDC_DIMM_BAR];
954 /* hard-code chip #0 */
955 mmio += PDC_CHIP0_OFS;
958 window_size = 0x2000 * 4; /* 32K byte uchar size */
959 idx = (u16) (offset / window_size);
961 writel(0x01, mmio + PDC_GENERAL_CTLR);
962 readl(mmio + PDC_GENERAL_CTLR);
963 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
964 readl(mmio + PDC_DIMM_WINDOW_CTLR);
966 offset -= (idx * window_size);
968 dist = ((long) (window_size - (offset + size))) >= 0 ? size :
969 (long) (window_size - offset);
970 memcpy_fromio((char *) psource, (char *) (dimm_mmio + offset / 4),
975 for (; (long) size >= (long) window_size ;) {
976 writel(0x01, mmio + PDC_GENERAL_CTLR);
977 readl(mmio + PDC_GENERAL_CTLR);
978 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
979 readl(mmio + PDC_DIMM_WINDOW_CTLR);
980 memcpy_fromio((char *) psource, (char *) (dimm_mmio),
982 psource += window_size;
988 writel(0x01, mmio + PDC_GENERAL_CTLR);
989 readl(mmio + PDC_GENERAL_CTLR);
990 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
991 readl(mmio + PDC_DIMM_WINDOW_CTLR);
992 memcpy_fromio((char *) psource, (char *) (dimm_mmio),
999 static void pdc20621_put_to_dimm(struct ata_host *host, void *psource,
1000 u32 offset, u32 size)
1006 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
1007 void __iomem *dimm_mmio = host->iomap[PDC_DIMM_BAR];
1009 /* hard-code chip #0 */
1010 mmio += PDC_CHIP0_OFS;
1013 window_size = 0x2000 * 4; /* 32K byte uchar size */
1014 idx = (u16) (offset / window_size);
1016 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
1017 readl(mmio + PDC_DIMM_WINDOW_CTLR);
1018 offset -= (idx * window_size);
1020 dist = ((long)(s32)(window_size - (offset + size))) >= 0 ? size :
1021 (long) (window_size - offset);
1022 memcpy_toio(dimm_mmio + offset / 4, psource, dist);
1023 writel(0x01, mmio + PDC_GENERAL_CTLR);
1024 readl(mmio + PDC_GENERAL_CTLR);
1028 for (; (long) size >= (long) window_size ;) {
1029 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
1030 readl(mmio + PDC_DIMM_WINDOW_CTLR);
1031 memcpy_toio(dimm_mmio, psource, window_size / 4);
1032 writel(0x01, mmio + PDC_GENERAL_CTLR);
1033 readl(mmio + PDC_GENERAL_CTLR);
1034 psource += window_size;
1035 size -= window_size;
1040 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
1041 readl(mmio + PDC_DIMM_WINDOW_CTLR);
1042 memcpy_toio(dimm_mmio, psource, size / 4);
1043 writel(0x01, mmio + PDC_GENERAL_CTLR);
1044 readl(mmio + PDC_GENERAL_CTLR);
1049 static unsigned int pdc20621_i2c_read(struct ata_host *host, u32 device,
1050 u32 subaddr, u32 *pdata)
1052 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
1057 /* hard-code chip #0 */
1058 mmio += PDC_CHIP0_OFS;
1060 i2creg |= device << 24;
1061 i2creg |= subaddr << 16;
1063 /* Set the device and subaddress */
1064 writel(i2creg, mmio + PDC_I2C_ADDR_DATA);
1065 readl(mmio + PDC_I2C_ADDR_DATA);
1067 /* Write Control to perform read operation, mask int */
1068 writel(PDC_I2C_READ | PDC_I2C_START | PDC_I2C_MASK_INT,
1069 mmio + PDC_I2C_CONTROL);
1071 for (count = 0; count <= 1000; count ++) {
1072 status = readl(mmio + PDC_I2C_CONTROL);
1073 if (status & PDC_I2C_COMPLETE) {
1074 status = readl(mmio + PDC_I2C_ADDR_DATA);
1076 } else if (count == 1000)
1080 *pdata = (status >> 8) & 0x000000ff;
1085 static int pdc20621_detect_dimm(struct ata_host *host)
1088 if (pdc20621_i2c_read(host, PDC_DIMM0_SPD_DEV_ADDRESS,
1089 PDC_DIMM_SPD_SYSTEM_FREQ, &data)) {
1095 if (pdc20621_i2c_read(host, PDC_DIMM0_SPD_DEV_ADDRESS, 9, &data)) {
1105 static int pdc20621_prog_dimm0(struct ata_host *host)
1111 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
1112 static const struct {
1115 } pdc_i2c_read_data [] = {
1116 { PDC_DIMM_SPD_TYPE, 11 },
1117 { PDC_DIMM_SPD_FRESH_RATE, 12 },
1118 { PDC_DIMM_SPD_COLUMN_NUM, 4 },
1119 { PDC_DIMM_SPD_ATTRIBUTE, 21 },
1120 { PDC_DIMM_SPD_ROW_NUM, 3 },
1121 { PDC_DIMM_SPD_BANK_NUM, 17 },
1122 { PDC_DIMM_SPD_MODULE_ROW, 5 },
1123 { PDC_DIMM_SPD_ROW_PRE_CHARGE, 27 },
1124 { PDC_DIMM_SPD_ROW_ACTIVE_DELAY, 28 },
1125 { PDC_DIMM_SPD_RAS_CAS_DELAY, 29 },
1126 { PDC_DIMM_SPD_ACTIVE_PRECHARGE, 30 },
1127 { PDC_DIMM_SPD_CAS_LATENCY, 18 },
1130 /* hard-code chip #0 */
1131 mmio += PDC_CHIP0_OFS;
1133 for(i=0; i<ARRAY_SIZE(pdc_i2c_read_data); i++)
1134 pdc20621_i2c_read(host, PDC_DIMM0_SPD_DEV_ADDRESS,
1135 pdc_i2c_read_data[i].reg,
1136 &spd0[pdc_i2c_read_data[i].ofs]);
1138 data |= (spd0[4] - 8) | ((spd0[21] != 0) << 3) | ((spd0[3]-11) << 4);
1139 data |= ((spd0[17] / 4) << 6) | ((spd0[5] / 2) << 7) |
1140 ((((spd0[27] + 9) / 10) - 1) << 8) ;
1141 data |= (((((spd0[29] > spd0[28])
1142 ? spd0[29] : spd0[28]) + 9) / 10) - 1) << 10;
1143 data |= ((spd0[30] - spd0[29] + 9) / 10 - 2) << 12;
1145 if (spd0[18] & 0x08)
1146 data |= ((0x03) << 14);
1147 else if (spd0[18] & 0x04)
1148 data |= ((0x02) << 14);
1149 else if (spd0[18] & 0x01)
1150 data |= ((0x01) << 14);
1155 Calculate the size of bDIMMSize (power of 2) and
1156 merge the DIMM size by program start/end address.
1159 bdimmsize = spd0[4] + (spd0[5] / 2) + spd0[3] + (spd0[17] / 2) + 3;
1160 size = (1 << bdimmsize) >> 20; /* size = xxx(MB) */
1161 data |= (((size / 16) - 1) << 16);
1164 writel(data, mmio + PDC_DIMM0_CONTROL);
1165 readl(mmio + PDC_DIMM0_CONTROL);
1170 static unsigned int pdc20621_prog_dimm_global(struct ata_host *host)
1174 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
1176 /* hard-code chip #0 */
1177 mmio += PDC_CHIP0_OFS;
1180 Set To Default : DIMM Module Global Control Register (0x022259F1)
1181 DIMM Arbitration Disable (bit 20)
1182 DIMM Data/Control Output Driving Selection (bit12 - bit15)
1183 Refresh Enable (bit 17)
1187 writel(data, mmio + PDC_SDRAM_CONTROL);
1188 readl(mmio + PDC_SDRAM_CONTROL);
1190 /* Turn on for ECC */
1191 pdc20621_i2c_read(host, PDC_DIMM0_SPD_DEV_ADDRESS,
1192 PDC_DIMM_SPD_TYPE, &spd0);
1194 data |= (0x01 << 16);
1195 writel(data, mmio + PDC_SDRAM_CONTROL);
1196 readl(mmio + PDC_SDRAM_CONTROL);
1197 printk(KERN_ERR "Local DIMM ECC Enabled\n");
1200 /* DIMM Initialization Select/Enable (bit 18/19) */
1203 writel(data, mmio + PDC_SDRAM_CONTROL);
1206 for (i = 1; i <= 10; i++) { /* polling ~5 secs */
1207 data = readl(mmio + PDC_SDRAM_CONTROL);
1208 if (!(data & (1<<19))) {
1218 static unsigned int pdc20621_dimm_init(struct ata_host *host)
1220 int speed, size, length;
1221 u32 addr,spd0,pci_status;
1228 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
1230 /* hard-code chip #0 */
1231 mmio += PDC_CHIP0_OFS;
1233 /* Initialize PLL based upon PCI Bus Frequency */
1235 /* Initialize Time Period Register */
1236 writel(0xffffffff, mmio + PDC_TIME_PERIOD);
1237 time_period = readl(mmio + PDC_TIME_PERIOD);
1238 VPRINTK("Time Period Register (0x40): 0x%x\n", time_period);
1241 writel(PDC_TIMER_DEFAULT, mmio + PDC_TIME_CONTROL);
1242 readl(mmio + PDC_TIME_CONTROL);
1244 /* Wait 3 seconds */
1248 When timer is enabled, counter is decreased every internal
1252 tcount = readl(mmio + PDC_TIME_COUNTER);
1253 VPRINTK("Time Counter Register (0x44): 0x%x\n", tcount);
1256 If SX4 is on PCI-X bus, after 3 seconds, the timer counter
1257 register should be >= (0xffffffff - 3x10^8).
1259 if(tcount >= PCI_X_TCOUNT) {
1260 ticks = (time_period - tcount);
1261 VPRINTK("Num counters 0x%x (%d)\n", ticks, ticks);
1263 clock = (ticks / 300000);
1264 VPRINTK("10 * Internal clk = 0x%x (%d)\n", clock, clock);
1266 clock = (clock * 33);
1267 VPRINTK("10 * Internal clk * 33 = 0x%x (%d)\n", clock, clock);
1269 /* PLL F Param (bit 22:16) */
1270 fparam = (1400000 / clock) - 2;
1271 VPRINTK("PLL F Param: 0x%x (%d)\n", fparam, fparam);
1273 /* OD param = 0x2 (bit 31:30), R param = 0x5 (bit 29:25) */
1274 pci_status = (0x8a001824 | (fparam << 16));
1276 pci_status = PCI_PLL_INIT;
1278 /* Initialize PLL. */
1279 VPRINTK("pci_status: 0x%x\n", pci_status);
1280 writel(pci_status, mmio + PDC_CTL_STATUS);
1281 readl(mmio + PDC_CTL_STATUS);
1284 Read SPD of DIMM by I2C interface,
1285 and program the DIMM Module Controller.
1287 if (!(speed = pdc20621_detect_dimm(host))) {
1288 printk(KERN_ERR "Detect Local DIMM Fail\n");
1289 return 1; /* DIMM error */
1291 VPRINTK("Local DIMM Speed = %d\n", speed);
1293 /* Programming DIMM0 Module Control Register (index_CID0:80h) */
1294 size = pdc20621_prog_dimm0(host);
1295 VPRINTK("Local DIMM Size = %dMB\n",size);
1297 /* Programming DIMM Module Global Control Register (index_CID0:88h) */
1298 if (pdc20621_prog_dimm_global(host)) {
1299 printk(KERN_ERR "Programming DIMM Module Global Control Register Fail\n");
1303 #ifdef ATA_VERBOSE_DEBUG
1305 u8 test_parttern1[40] = {0x55,0xAA,'P','r','o','m','i','s','e',' ',
1306 'N','o','t',' ','Y','e','t',' ','D','e','f','i','n','e','d',' ',
1308 '9','8','0','3','1','6','1','2',0,0};
1309 u8 test_parttern2[40] = {0};
1311 pdc20621_put_to_dimm(host, (void *) test_parttern2, 0x10040, 40);
1312 pdc20621_put_to_dimm(host, (void *) test_parttern2, 0x40, 40);
1314 pdc20621_put_to_dimm(host, (void *) test_parttern1, 0x10040, 40);
1315 pdc20621_get_from_dimm(host, (void *) test_parttern2, 0x40, 40);
1316 printk(KERN_ERR "%x, %x, %s\n", test_parttern2[0],
1317 test_parttern2[1], &(test_parttern2[2]));
1318 pdc20621_get_from_dimm(host, (void *) test_parttern2, 0x10040,
1320 printk(KERN_ERR "%x, %x, %s\n", test_parttern2[0],
1321 test_parttern2[1], &(test_parttern2[2]));
1323 pdc20621_put_to_dimm(host, (void *) test_parttern1, 0x40, 40);
1324 pdc20621_get_from_dimm(host, (void *) test_parttern2, 0x40, 40);
1325 printk(KERN_ERR "%x, %x, %s\n", test_parttern2[0],
1326 test_parttern2[1], &(test_parttern2[2]));
1330 /* ECC initiliazation. */
1332 pdc20621_i2c_read(host, PDC_DIMM0_SPD_DEV_ADDRESS,
1333 PDC_DIMM_SPD_TYPE, &spd0);
1335 VPRINTK("Start ECC initialization\n");
1337 length = size * 1024 * 1024;
1338 while (addr < length) {
1339 pdc20621_put_to_dimm(host, (void *) &tmp, addr,
1341 addr += sizeof(u32);
1343 VPRINTK("Finish ECC initialization\n");
1349 static void pdc_20621_init(struct ata_host *host)
1352 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
1354 /* hard-code chip #0 */
1355 mmio += PDC_CHIP0_OFS;
1358 * Select page 0x40 for our 32k DIMM window
1360 tmp = readl(mmio + PDC_20621_DIMM_WINDOW) & 0xffff0000;
1361 tmp |= PDC_PAGE_WINDOW; /* page 40h; arbitrarily selected */
1362 writel(tmp, mmio + PDC_20621_DIMM_WINDOW);
1367 tmp = readl(mmio + PDC_HDMA_CTLSTAT);
1369 writel(tmp, mmio + PDC_HDMA_CTLSTAT);
1370 readl(mmio + PDC_HDMA_CTLSTAT); /* flush */
1374 tmp = readl(mmio + PDC_HDMA_CTLSTAT);
1376 writel(tmp, mmio + PDC_HDMA_CTLSTAT);
1377 readl(mmio + PDC_HDMA_CTLSTAT); /* flush */
1380 static int pdc_sata_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
1382 static int printed_version;
1383 const struct ata_port_info *ppi[] =
1384 { &pdc_port_info[ent->driver_data], NULL };
1385 struct ata_host *host;
1387 struct pdc_host_priv *hpriv;
1390 if (!printed_version++)
1391 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
1394 host = ata_host_alloc_pinfo(&pdev->dev, ppi, 4);
1395 hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL);
1396 if (!host || !hpriv)
1399 host->private_data = hpriv;
1401 /* acquire resources and fill host */
1402 rc = pcim_enable_device(pdev);
1406 rc = pcim_iomap_regions(pdev, (1 << PDC_MMIO_BAR) | (1 << PDC_DIMM_BAR),
1409 pcim_pin_device(pdev);
1412 host->iomap = pcim_iomap_table(pdev);
1414 base = host->iomap[PDC_MMIO_BAR] + PDC_CHIP0_OFS;
1415 pdc_sata_setup_port(&host->ports[0]->ioaddr, base + 0x200);
1416 pdc_sata_setup_port(&host->ports[1]->ioaddr, base + 0x280);
1417 pdc_sata_setup_port(&host->ports[2]->ioaddr, base + 0x300);
1418 pdc_sata_setup_port(&host->ports[3]->ioaddr, base + 0x380);
1420 /* configure and activate */
1421 rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
1424 rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
1428 if (pdc20621_dimm_init(host))
1430 pdc_20621_init(host);
1432 pci_set_master(pdev);
1433 return ata_host_activate(host, pdev->irq, pdc20621_interrupt,
1434 IRQF_SHARED, &pdc_sata_sht);
1438 static int __init pdc_sata_init(void)
1440 return pci_register_driver(&pdc_sata_pci_driver);
1444 static void __exit pdc_sata_exit(void)
1446 pci_unregister_driver(&pdc_sata_pci_driver);
1450 MODULE_AUTHOR("Jeff Garzik");
1451 MODULE_DESCRIPTION("Promise SATA low-level driver");
1452 MODULE_LICENSE("GPL");
1453 MODULE_DEVICE_TABLE(pci, pdc_sata_pci_tbl);
1454 MODULE_VERSION(DRV_VERSION);
1456 module_init(pdc_sata_init);
1457 module_exit(pdc_sata_exit);