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 |
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(struct ata_queued_cmd *qc);
238 static struct scsi_host_template pdc_sata_sht = {
239 ATA_BASE_SHT(DRV_NAME),
240 .sg_tablesize = LIBATA_MAX_PRD,
241 .dma_boundary = ATA_DMA_BOUNDARY,
244 /* TODO: inherit from base port_ops after converting to new EH */
245 static struct ata_port_operations pdc_20621_ops = {
246 .sff_tf_load = pdc_tf_load_mmio,
247 .sff_tf_read = ata_sff_tf_read,
248 .sff_check_status = ata_sff_check_status,
249 .sff_exec_command = pdc_exec_command_mmio,
250 .sff_dev_select = ata_sff_dev_select,
251 .phy_reset = pdc_20621_phy_reset,
252 .qc_prep = pdc20621_qc_prep,
253 .qc_issue = pdc20621_qc_issue,
254 .qc_fill_rtf = ata_sff_qc_fill_rtf,
255 .sff_data_xfer = ata_sff_data_xfer,
256 .eng_timeout = pdc_eng_timeout,
257 .sff_irq_clear = pdc20621_irq_clear,
258 .sff_irq_on = ata_sff_irq_on,
259 .port_start = pdc_port_start,
262 static const struct ata_port_info pdc_port_info[] = {
265 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
266 ATA_FLAG_SRST | ATA_FLAG_MMIO |
267 ATA_FLAG_NO_ATAPI | ATA_FLAG_PIO_POLLING,
268 .pio_mask = ATA_PIO4,
269 .mwdma_mask = ATA_MWDMA2,
270 .udma_mask = ATA_UDMA6,
271 .port_ops = &pdc_20621_ops,
276 static const struct pci_device_id pdc_sata_pci_tbl[] = {
277 { PCI_VDEVICE(PROMISE, 0x6622), board_20621 },
279 { } /* terminate list */
282 static struct pci_driver pdc_sata_pci_driver = {
284 .id_table = pdc_sata_pci_tbl,
285 .probe = pdc_sata_init_one,
286 .remove = ata_pci_remove_one,
290 static int pdc_port_start(struct ata_port *ap)
292 struct device *dev = ap->host->dev;
293 struct pdc_port_priv *pp;
296 rc = ata_port_start(ap);
300 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
304 pp->pkt = dmam_alloc_coherent(dev, 128, &pp->pkt_dma, GFP_KERNEL);
308 ap->private_data = pp;
313 static void pdc_20621_phy_reset(struct ata_port *ap)
316 ap->cbl = ATA_CBL_SATA;
321 static inline void pdc20621_ata_sg(struct ata_taskfile *tf, u8 *buf,
323 unsigned int total_len)
326 unsigned int dw = PDC_DIMM_APKT_PRD >> 2;
327 __le32 *buf32 = (__le32 *) buf;
329 /* output ATA packet S/G table */
330 addr = PDC_20621_DIMM_BASE + PDC_20621_DIMM_DATA +
331 (PDC_DIMM_DATA_STEP * portno);
332 VPRINTK("ATA sg addr 0x%x, %d\n", addr, addr);
333 buf32[dw] = cpu_to_le32(addr);
334 buf32[dw + 1] = cpu_to_le32(total_len | ATA_PRD_EOT);
336 VPRINTK("ATA PSG @ %x == (0x%x, 0x%x)\n",
337 PDC_20621_DIMM_BASE +
338 (PDC_DIMM_WINDOW_STEP * portno) +
340 buf32[dw], buf32[dw + 1]);
343 static inline void pdc20621_host_sg(struct ata_taskfile *tf, u8 *buf,
345 unsigned int total_len)
348 unsigned int dw = PDC_DIMM_HPKT_PRD >> 2;
349 __le32 *buf32 = (__le32 *) buf;
351 /* output Host DMA packet S/G table */
352 addr = PDC_20621_DIMM_BASE + PDC_20621_DIMM_DATA +
353 (PDC_DIMM_DATA_STEP * portno);
355 buf32[dw] = cpu_to_le32(addr);
356 buf32[dw + 1] = cpu_to_le32(total_len | ATA_PRD_EOT);
358 VPRINTK("HOST PSG @ %x == (0x%x, 0x%x)\n",
359 PDC_20621_DIMM_BASE +
360 (PDC_DIMM_WINDOW_STEP * portno) +
362 buf32[dw], buf32[dw + 1]);
365 static inline unsigned int pdc20621_ata_pkt(struct ata_taskfile *tf,
366 unsigned int devno, u8 *buf,
370 __le32 *buf32 = (__le32 *) buf;
373 unsigned int dimm_sg = PDC_20621_DIMM_BASE +
374 (PDC_DIMM_WINDOW_STEP * portno) +
376 VPRINTK("ENTER, dimm_sg == 0x%x, %d\n", dimm_sg, dimm_sg);
378 i = PDC_DIMM_ATA_PKT;
383 if ((tf->protocol == ATA_PROT_DMA) && (!(tf->flags & ATA_TFLAG_WRITE)))
384 buf[i++] = PDC_PKT_READ;
385 else if (tf->protocol == ATA_PROT_NODATA)
386 buf[i++] = PDC_PKT_NODATA;
389 buf[i++] = 0; /* reserved */
390 buf[i++] = portno + 1; /* seq. id */
391 buf[i++] = 0xff; /* delay seq. id */
393 /* dimm dma S/G, and next-pkt */
395 if (tf->protocol == ATA_PROT_NODATA)
398 buf32[dw] = cpu_to_le32(dimm_sg);
403 dev_reg = ATA_DEVICE_OBS;
405 dev_reg = ATA_DEVICE_OBS | ATA_DEV1;
408 buf[i++] = (1 << 5) | PDC_PKT_CLEAR_BSY | ATA_REG_DEVICE;
411 /* device control register */
412 buf[i++] = (1 << 5) | PDC_REG_DEVCTL;
418 static inline void pdc20621_host_pkt(struct ata_taskfile *tf, u8 *buf,
423 __le32 *buf32 = (__le32 *) buf;
425 unsigned int host_sg = PDC_20621_DIMM_BASE +
426 (PDC_DIMM_WINDOW_STEP * portno) +
428 unsigned int dimm_sg = PDC_20621_DIMM_BASE +
429 (PDC_DIMM_WINDOW_STEP * portno) +
431 VPRINTK("ENTER, dimm_sg == 0x%x, %d\n", dimm_sg, dimm_sg);
432 VPRINTK("host_sg == 0x%x, %d\n", host_sg, host_sg);
434 dw = PDC_DIMM_HOST_PKT >> 2;
437 * Set up Host DMA packet
439 if ((tf->protocol == ATA_PROT_DMA) && (!(tf->flags & ATA_TFLAG_WRITE)))
443 tmp |= ((portno + 1 + 4) << 16); /* seq. id */
444 tmp |= (0xff << 24); /* delay seq. id */
445 buf32[dw + 0] = cpu_to_le32(tmp);
446 buf32[dw + 1] = cpu_to_le32(host_sg);
447 buf32[dw + 2] = cpu_to_le32(dimm_sg);
450 VPRINTK("HOST PKT @ %x == (0x%x 0x%x 0x%x 0x%x)\n",
451 PDC_20621_DIMM_BASE + (PDC_DIMM_WINDOW_STEP * portno) +
459 static void pdc20621_dma_prep(struct ata_queued_cmd *qc)
461 struct scatterlist *sg;
462 struct ata_port *ap = qc->ap;
463 struct pdc_port_priv *pp = ap->private_data;
464 void __iomem *mmio = ap->host->iomap[PDC_MMIO_BAR];
465 void __iomem *dimm_mmio = ap->host->iomap[PDC_DIMM_BAR];
466 unsigned int portno = ap->port_no;
467 unsigned int i, si, idx, total_len = 0, sgt_len;
468 __le32 *buf = (__le32 *) &pp->dimm_buf[PDC_DIMM_HEADER_SZ];
470 WARN_ON(!(qc->flags & ATA_QCFLAG_DMAMAP));
472 VPRINTK("ata%u: ENTER\n", ap->print_id);
474 /* hard-code chip #0 */
475 mmio += PDC_CHIP0_OFS;
481 for_each_sg(qc->sg, sg, qc->n_elem, si) {
482 buf[idx++] = cpu_to_le32(sg_dma_address(sg));
483 buf[idx++] = cpu_to_le32(sg_dma_len(sg));
484 total_len += sg_dma_len(sg);
486 buf[idx - 1] |= cpu_to_le32(ATA_PRD_EOT);
490 * Build ATA, host DMA packets
492 pdc20621_host_sg(&qc->tf, &pp->dimm_buf[0], portno, total_len);
493 pdc20621_host_pkt(&qc->tf, &pp->dimm_buf[0], portno);
495 pdc20621_ata_sg(&qc->tf, &pp->dimm_buf[0], portno, total_len);
496 i = pdc20621_ata_pkt(&qc->tf, qc->dev->devno, &pp->dimm_buf[0], portno);
498 if (qc->tf.flags & ATA_TFLAG_LBA48)
499 i = pdc_prep_lba48(&qc->tf, &pp->dimm_buf[0], i);
501 i = pdc_prep_lba28(&qc->tf, &pp->dimm_buf[0], i);
503 pdc_pkt_footer(&qc->tf, &pp->dimm_buf[0], i);
505 /* copy three S/G tables and two packets to DIMM MMIO window */
506 memcpy_toio(dimm_mmio + (portno * PDC_DIMM_WINDOW_STEP),
507 &pp->dimm_buf, PDC_DIMM_HEADER_SZ);
508 memcpy_toio(dimm_mmio + (portno * PDC_DIMM_WINDOW_STEP) +
510 &pp->dimm_buf[PDC_DIMM_HEADER_SZ], sgt_len);
512 /* force host FIFO dump */
513 writel(0x00000001, mmio + PDC_20621_GENERAL_CTL);
515 readl(dimm_mmio); /* MMIO PCI posting flush */
517 VPRINTK("ata pkt buf ofs %u, prd size %u, mmio copied\n", i, sgt_len);
520 static void pdc20621_nodata_prep(struct ata_queued_cmd *qc)
522 struct ata_port *ap = qc->ap;
523 struct pdc_port_priv *pp = ap->private_data;
524 void __iomem *mmio = ap->host->iomap[PDC_MMIO_BAR];
525 void __iomem *dimm_mmio = ap->host->iomap[PDC_DIMM_BAR];
526 unsigned int portno = ap->port_no;
529 VPRINTK("ata%u: ENTER\n", ap->print_id);
531 /* hard-code chip #0 */
532 mmio += PDC_CHIP0_OFS;
534 i = pdc20621_ata_pkt(&qc->tf, qc->dev->devno, &pp->dimm_buf[0], portno);
536 if (qc->tf.flags & ATA_TFLAG_LBA48)
537 i = pdc_prep_lba48(&qc->tf, &pp->dimm_buf[0], i);
539 i = pdc_prep_lba28(&qc->tf, &pp->dimm_buf[0], i);
541 pdc_pkt_footer(&qc->tf, &pp->dimm_buf[0], i);
543 /* copy three S/G tables and two packets to DIMM MMIO window */
544 memcpy_toio(dimm_mmio + (portno * PDC_DIMM_WINDOW_STEP),
545 &pp->dimm_buf, PDC_DIMM_HEADER_SZ);
547 /* force host FIFO dump */
548 writel(0x00000001, mmio + PDC_20621_GENERAL_CTL);
550 readl(dimm_mmio); /* MMIO PCI posting flush */
552 VPRINTK("ata pkt buf ofs %u, mmio copied\n", i);
555 static void pdc20621_qc_prep(struct ata_queued_cmd *qc)
557 switch (qc->tf.protocol) {
559 pdc20621_dma_prep(qc);
561 case ATA_PROT_NODATA:
562 pdc20621_nodata_prep(qc);
569 static void __pdc20621_push_hdma(struct ata_queued_cmd *qc,
573 struct ata_port *ap = qc->ap;
574 struct ata_host *host = ap->host;
575 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
577 /* hard-code chip #0 */
578 mmio += PDC_CHIP0_OFS;
580 writel(0x00000001, mmio + PDC_20621_SEQCTL + (seq * 4));
581 readl(mmio + PDC_20621_SEQCTL + (seq * 4)); /* flush */
583 writel(pkt_ofs, mmio + PDC_HDMA_PKT_SUBMIT);
584 readl(mmio + PDC_HDMA_PKT_SUBMIT); /* flush */
587 static void pdc20621_push_hdma(struct ata_queued_cmd *qc,
591 struct ata_port *ap = qc->ap;
592 struct pdc_host_priv *pp = ap->host->private_data;
593 unsigned int idx = pp->hdma_prod & PDC_HDMA_Q_MASK;
595 if (!pp->doing_hdma) {
596 __pdc20621_push_hdma(qc, seq, pkt_ofs);
601 pp->hdma[idx].qc = qc;
602 pp->hdma[idx].seq = seq;
603 pp->hdma[idx].pkt_ofs = pkt_ofs;
607 static void pdc20621_pop_hdma(struct ata_queued_cmd *qc)
609 struct ata_port *ap = qc->ap;
610 struct pdc_host_priv *pp = ap->host->private_data;
611 unsigned int idx = pp->hdma_cons & PDC_HDMA_Q_MASK;
613 /* if nothing on queue, we're done */
614 if (pp->hdma_prod == pp->hdma_cons) {
619 __pdc20621_push_hdma(pp->hdma[idx].qc, pp->hdma[idx].seq,
620 pp->hdma[idx].pkt_ofs);
624 #ifdef ATA_VERBOSE_DEBUG
625 static void pdc20621_dump_hdma(struct ata_queued_cmd *qc)
627 struct ata_port *ap = qc->ap;
628 unsigned int port_no = ap->port_no;
629 void __iomem *dimm_mmio = ap->host->iomap[PDC_DIMM_BAR];
631 dimm_mmio += (port_no * PDC_DIMM_WINDOW_STEP);
632 dimm_mmio += PDC_DIMM_HOST_PKT;
634 printk(KERN_ERR "HDMA[0] == 0x%08X\n", readl(dimm_mmio));
635 printk(KERN_ERR "HDMA[1] == 0x%08X\n", readl(dimm_mmio + 4));
636 printk(KERN_ERR "HDMA[2] == 0x%08X\n", readl(dimm_mmio + 8));
637 printk(KERN_ERR "HDMA[3] == 0x%08X\n", readl(dimm_mmio + 12));
640 static inline void pdc20621_dump_hdma(struct ata_queued_cmd *qc) { }
641 #endif /* ATA_VERBOSE_DEBUG */
643 static void pdc20621_packet_start(struct ata_queued_cmd *qc)
645 struct ata_port *ap = qc->ap;
646 struct ata_host *host = ap->host;
647 unsigned int port_no = ap->port_no;
648 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
649 unsigned int rw = (qc->tf.flags & ATA_TFLAG_WRITE);
650 u8 seq = (u8) (port_no + 1);
651 unsigned int port_ofs;
653 /* hard-code chip #0 */
654 mmio += PDC_CHIP0_OFS;
656 VPRINTK("ata%u: ENTER\n", ap->print_id);
658 wmb(); /* flush PRD, pkt writes */
660 port_ofs = PDC_20621_DIMM_BASE + (PDC_DIMM_WINDOW_STEP * port_no);
662 /* if writing, we (1) DMA to DIMM, then (2) do ATA command */
663 if (rw && qc->tf.protocol == ATA_PROT_DMA) {
666 pdc20621_dump_hdma(qc);
667 pdc20621_push_hdma(qc, seq, port_ofs + PDC_DIMM_HOST_PKT);
668 VPRINTK("queued ofs 0x%x (%u), seq %u\n",
669 port_ofs + PDC_DIMM_HOST_PKT,
670 port_ofs + PDC_DIMM_HOST_PKT,
673 writel(0x00000001, mmio + PDC_20621_SEQCTL + (seq * 4));
674 readl(mmio + PDC_20621_SEQCTL + (seq * 4)); /* flush */
676 writel(port_ofs + PDC_DIMM_ATA_PKT,
677 ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT);
678 readl(ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT);
679 VPRINTK("submitted ofs 0x%x (%u), seq %u\n",
680 port_ofs + PDC_DIMM_ATA_PKT,
681 port_ofs + PDC_DIMM_ATA_PKT,
686 static unsigned int pdc20621_qc_issue(struct ata_queued_cmd *qc)
688 switch (qc->tf.protocol) {
690 case ATA_PROT_NODATA:
691 pdc20621_packet_start(qc);
702 return ata_sff_qc_issue(qc);
705 static inline unsigned int pdc20621_host_intr(struct ata_port *ap,
706 struct ata_queued_cmd *qc,
707 unsigned int doing_hdma,
710 unsigned int port_no = ap->port_no;
711 unsigned int port_ofs =
712 PDC_20621_DIMM_BASE + (PDC_DIMM_WINDOW_STEP * port_no);
714 unsigned int handled = 0;
718 if ((qc->tf.protocol == ATA_PROT_DMA) && /* read */
719 (!(qc->tf.flags & ATA_TFLAG_WRITE))) {
721 /* step two - DMA from DIMM to host */
723 VPRINTK("ata%u: read hdma, 0x%x 0x%x\n", ap->print_id,
724 readl(mmio + 0x104), readl(mmio + PDC_HDMA_CTLSTAT));
725 /* get drive status; clear intr; complete txn */
726 qc->err_mask |= ac_err_mask(ata_wait_idle(ap));
728 pdc20621_pop_hdma(qc);
731 /* step one - exec ATA command */
733 u8 seq = (u8) (port_no + 1 + 4);
734 VPRINTK("ata%u: read ata, 0x%x 0x%x\n", ap->print_id,
735 readl(mmio + 0x104), readl(mmio + PDC_HDMA_CTLSTAT));
737 /* submit hdma pkt */
738 pdc20621_dump_hdma(qc);
739 pdc20621_push_hdma(qc, seq,
740 port_ofs + PDC_DIMM_HOST_PKT);
744 } else if (qc->tf.protocol == ATA_PROT_DMA) { /* write */
746 /* step one - DMA from host to DIMM */
748 u8 seq = (u8) (port_no + 1);
749 VPRINTK("ata%u: write hdma, 0x%x 0x%x\n", ap->print_id,
750 readl(mmio + 0x104), readl(mmio + PDC_HDMA_CTLSTAT));
753 writel(0x00000001, mmio + PDC_20621_SEQCTL + (seq * 4));
754 readl(mmio + PDC_20621_SEQCTL + (seq * 4));
755 writel(port_ofs + PDC_DIMM_ATA_PKT,
756 ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT);
757 readl(ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT);
760 /* step two - execute ATA command */
762 VPRINTK("ata%u: write ata, 0x%x 0x%x\n", ap->print_id,
763 readl(mmio + 0x104), readl(mmio + PDC_HDMA_CTLSTAT));
764 /* get drive status; clear intr; complete txn */
765 qc->err_mask |= ac_err_mask(ata_wait_idle(ap));
767 pdc20621_pop_hdma(qc);
771 /* command completion, but no data xfer */
772 } else if (qc->tf.protocol == ATA_PROT_NODATA) {
774 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
775 DPRINTK("BUS_NODATA (drv_stat 0x%X)\n", status);
776 qc->err_mask |= ac_err_mask(status);
781 ap->stats.idle_irq++;
787 static void pdc20621_irq_clear(struct ata_port *ap)
789 struct ata_host *host = ap->host;
790 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
792 mmio += PDC_CHIP0_OFS;
794 readl(mmio + PDC_20621_SEQMASK);
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_eng_timeout(struct ata_port *ap)
865 struct ata_host *host = ap->host;
866 struct ata_queued_cmd *qc;
871 spin_lock_irqsave(&host->lock, flags);
873 qc = ata_qc_from_tag(ap, ap->link.active_tag);
875 switch (qc->tf.protocol) {
877 case ATA_PROT_NODATA:
878 ata_port_printk(ap, KERN_ERR, "command timeout\n");
879 qc->err_mask |= __ac_err_mask(ata_wait_idle(ap));
883 drv_stat = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
885 ata_port_printk(ap, KERN_ERR,
886 "unknown timeout, cmd 0x%x stat 0x%x\n",
887 qc->tf.command, drv_stat);
889 qc->err_mask |= ac_err_mask(drv_stat);
893 spin_unlock_irqrestore(&host->lock, flags);
894 ata_eh_qc_complete(qc);
898 static void pdc_tf_load_mmio(struct ata_port *ap, const struct ata_taskfile *tf)
900 WARN_ON(tf->protocol == ATA_PROT_DMA ||
901 tf->protocol == ATA_PROT_NODATA);
902 ata_sff_tf_load(ap, tf);
906 static void pdc_exec_command_mmio(struct ata_port *ap, const struct ata_taskfile *tf)
908 WARN_ON(tf->protocol == ATA_PROT_DMA ||
909 tf->protocol == ATA_PROT_NODATA);
910 ata_sff_exec_command(ap, tf);
914 static void pdc_sata_setup_port(struct ata_ioports *port, void __iomem *base)
916 port->cmd_addr = base;
917 port->data_addr = base;
919 port->error_addr = base + 0x4;
920 port->nsect_addr = base + 0x8;
921 port->lbal_addr = base + 0xc;
922 port->lbam_addr = base + 0x10;
923 port->lbah_addr = base + 0x14;
924 port->device_addr = base + 0x18;
926 port->status_addr = base + 0x1c;
927 port->altstatus_addr =
928 port->ctl_addr = base + 0x38;
932 #ifdef ATA_VERBOSE_DEBUG
933 static void pdc20621_get_from_dimm(struct ata_host *host, void *psource,
934 u32 offset, u32 size)
940 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
941 void __iomem *dimm_mmio = host->iomap[PDC_DIMM_BAR];
943 /* hard-code chip #0 */
944 mmio += PDC_CHIP0_OFS;
947 window_size = 0x2000 * 4; /* 32K byte uchar size */
948 idx = (u16) (offset / window_size);
950 writel(0x01, mmio + PDC_GENERAL_CTLR);
951 readl(mmio + PDC_GENERAL_CTLR);
952 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
953 readl(mmio + PDC_DIMM_WINDOW_CTLR);
955 offset -= (idx * window_size);
957 dist = ((long) (window_size - (offset + size))) >= 0 ? size :
958 (long) (window_size - offset);
959 memcpy_fromio((char *) psource, (char *) (dimm_mmio + offset / 4),
964 for (; (long) size >= (long) window_size ;) {
965 writel(0x01, mmio + PDC_GENERAL_CTLR);
966 readl(mmio + PDC_GENERAL_CTLR);
967 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
968 readl(mmio + PDC_DIMM_WINDOW_CTLR);
969 memcpy_fromio((char *) psource, (char *) (dimm_mmio),
971 psource += window_size;
977 writel(0x01, mmio + PDC_GENERAL_CTLR);
978 readl(mmio + PDC_GENERAL_CTLR);
979 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
980 readl(mmio + PDC_DIMM_WINDOW_CTLR);
981 memcpy_fromio((char *) psource, (char *) (dimm_mmio),
988 static void pdc20621_put_to_dimm(struct ata_host *host, void *psource,
989 u32 offset, u32 size)
995 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
996 void __iomem *dimm_mmio = host->iomap[PDC_DIMM_BAR];
998 /* hard-code chip #0 */
999 mmio += PDC_CHIP0_OFS;
1002 window_size = 0x2000 * 4; /* 32K byte uchar size */
1003 idx = (u16) (offset / window_size);
1005 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
1006 readl(mmio + PDC_DIMM_WINDOW_CTLR);
1007 offset -= (idx * window_size);
1009 dist = ((long)(s32)(window_size - (offset + size))) >= 0 ? size :
1010 (long) (window_size - offset);
1011 memcpy_toio(dimm_mmio + offset / 4, psource, dist);
1012 writel(0x01, mmio + PDC_GENERAL_CTLR);
1013 readl(mmio + PDC_GENERAL_CTLR);
1017 for (; (long) size >= (long) window_size ;) {
1018 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
1019 readl(mmio + PDC_DIMM_WINDOW_CTLR);
1020 memcpy_toio(dimm_mmio, psource, window_size / 4);
1021 writel(0x01, mmio + PDC_GENERAL_CTLR);
1022 readl(mmio + PDC_GENERAL_CTLR);
1023 psource += window_size;
1024 size -= 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, size / 4);
1032 writel(0x01, mmio + PDC_GENERAL_CTLR);
1033 readl(mmio + PDC_GENERAL_CTLR);
1038 static unsigned int pdc20621_i2c_read(struct ata_host *host, u32 device,
1039 u32 subaddr, u32 *pdata)
1041 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
1046 /* hard-code chip #0 */
1047 mmio += PDC_CHIP0_OFS;
1049 i2creg |= device << 24;
1050 i2creg |= subaddr << 16;
1052 /* Set the device and subaddress */
1053 writel(i2creg, mmio + PDC_I2C_ADDR_DATA);
1054 readl(mmio + PDC_I2C_ADDR_DATA);
1056 /* Write Control to perform read operation, mask int */
1057 writel(PDC_I2C_READ | PDC_I2C_START | PDC_I2C_MASK_INT,
1058 mmio + PDC_I2C_CONTROL);
1060 for (count = 0; count <= 1000; count ++) {
1061 status = readl(mmio + PDC_I2C_CONTROL);
1062 if (status & PDC_I2C_COMPLETE) {
1063 status = readl(mmio + PDC_I2C_ADDR_DATA);
1065 } else if (count == 1000)
1069 *pdata = (status >> 8) & 0x000000ff;
1074 static int pdc20621_detect_dimm(struct ata_host *host)
1077 if (pdc20621_i2c_read(host, PDC_DIMM0_SPD_DEV_ADDRESS,
1078 PDC_DIMM_SPD_SYSTEM_FREQ, &data)) {
1084 if (pdc20621_i2c_read(host, PDC_DIMM0_SPD_DEV_ADDRESS, 9, &data)) {
1094 static int pdc20621_prog_dimm0(struct ata_host *host)
1100 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
1101 static const struct {
1104 } pdc_i2c_read_data [] = {
1105 { PDC_DIMM_SPD_TYPE, 11 },
1106 { PDC_DIMM_SPD_FRESH_RATE, 12 },
1107 { PDC_DIMM_SPD_COLUMN_NUM, 4 },
1108 { PDC_DIMM_SPD_ATTRIBUTE, 21 },
1109 { PDC_DIMM_SPD_ROW_NUM, 3 },
1110 { PDC_DIMM_SPD_BANK_NUM, 17 },
1111 { PDC_DIMM_SPD_MODULE_ROW, 5 },
1112 { PDC_DIMM_SPD_ROW_PRE_CHARGE, 27 },
1113 { PDC_DIMM_SPD_ROW_ACTIVE_DELAY, 28 },
1114 { PDC_DIMM_SPD_RAS_CAS_DELAY, 29 },
1115 { PDC_DIMM_SPD_ACTIVE_PRECHARGE, 30 },
1116 { PDC_DIMM_SPD_CAS_LATENCY, 18 },
1119 /* hard-code chip #0 */
1120 mmio += PDC_CHIP0_OFS;
1122 for (i = 0; i < ARRAY_SIZE(pdc_i2c_read_data); i++)
1123 pdc20621_i2c_read(host, PDC_DIMM0_SPD_DEV_ADDRESS,
1124 pdc_i2c_read_data[i].reg,
1125 &spd0[pdc_i2c_read_data[i].ofs]);
1127 data |= (spd0[4] - 8) | ((spd0[21] != 0) << 3) | ((spd0[3]-11) << 4);
1128 data |= ((spd0[17] / 4) << 6) | ((spd0[5] / 2) << 7) |
1129 ((((spd0[27] + 9) / 10) - 1) << 8) ;
1130 data |= (((((spd0[29] > spd0[28])
1131 ? spd0[29] : spd0[28]) + 9) / 10) - 1) << 10;
1132 data |= ((spd0[30] - spd0[29] + 9) / 10 - 2) << 12;
1134 if (spd0[18] & 0x08)
1135 data |= ((0x03) << 14);
1136 else if (spd0[18] & 0x04)
1137 data |= ((0x02) << 14);
1138 else if (spd0[18] & 0x01)
1139 data |= ((0x01) << 14);
1144 Calculate the size of bDIMMSize (power of 2) and
1145 merge the DIMM size by program start/end address.
1148 bdimmsize = spd0[4] + (spd0[5] / 2) + spd0[3] + (spd0[17] / 2) + 3;
1149 size = (1 << bdimmsize) >> 20; /* size = xxx(MB) */
1150 data |= (((size / 16) - 1) << 16);
1153 writel(data, mmio + PDC_DIMM0_CONTROL);
1154 readl(mmio + PDC_DIMM0_CONTROL);
1159 static unsigned int pdc20621_prog_dimm_global(struct ata_host *host)
1163 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
1165 /* hard-code chip #0 */
1166 mmio += PDC_CHIP0_OFS;
1169 Set To Default : DIMM Module Global Control Register (0x022259F1)
1170 DIMM Arbitration Disable (bit 20)
1171 DIMM Data/Control Output Driving Selection (bit12 - bit15)
1172 Refresh Enable (bit 17)
1176 writel(data, mmio + PDC_SDRAM_CONTROL);
1177 readl(mmio + PDC_SDRAM_CONTROL);
1179 /* Turn on for ECC */
1180 pdc20621_i2c_read(host, PDC_DIMM0_SPD_DEV_ADDRESS,
1181 PDC_DIMM_SPD_TYPE, &spd0);
1183 data |= (0x01 << 16);
1184 writel(data, mmio + PDC_SDRAM_CONTROL);
1185 readl(mmio + PDC_SDRAM_CONTROL);
1186 printk(KERN_ERR "Local DIMM ECC Enabled\n");
1189 /* DIMM Initialization Select/Enable (bit 18/19) */
1192 writel(data, mmio + PDC_SDRAM_CONTROL);
1195 for (i = 1; i <= 10; i++) { /* polling ~5 secs */
1196 data = readl(mmio + PDC_SDRAM_CONTROL);
1197 if (!(data & (1<<19))) {
1207 static unsigned int pdc20621_dimm_init(struct ata_host *host)
1209 int speed, size, length;
1210 u32 addr, spd0, pci_status;
1212 u32 time_period = 0;
1217 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
1219 /* hard-code chip #0 */
1220 mmio += PDC_CHIP0_OFS;
1222 /* Initialize PLL based upon PCI Bus Frequency */
1224 /* Initialize Time Period Register */
1225 writel(0xffffffff, mmio + PDC_TIME_PERIOD);
1226 time_period = readl(mmio + PDC_TIME_PERIOD);
1227 VPRINTK("Time Period Register (0x40): 0x%x\n", time_period);
1230 writel(PDC_TIMER_DEFAULT, mmio + PDC_TIME_CONTROL);
1231 readl(mmio + PDC_TIME_CONTROL);
1233 /* Wait 3 seconds */
1237 When timer is enabled, counter is decreased every internal
1241 tcount = readl(mmio + PDC_TIME_COUNTER);
1242 VPRINTK("Time Counter Register (0x44): 0x%x\n", tcount);
1245 If SX4 is on PCI-X bus, after 3 seconds, the timer counter
1246 register should be >= (0xffffffff - 3x10^8).
1248 if (tcount >= PCI_X_TCOUNT) {
1249 ticks = (time_period - tcount);
1250 VPRINTK("Num counters 0x%x (%d)\n", ticks, ticks);
1252 clock = (ticks / 300000);
1253 VPRINTK("10 * Internal clk = 0x%x (%d)\n", clock, clock);
1255 clock = (clock * 33);
1256 VPRINTK("10 * Internal clk * 33 = 0x%x (%d)\n", clock, clock);
1258 /* PLL F Param (bit 22:16) */
1259 fparam = (1400000 / clock) - 2;
1260 VPRINTK("PLL F Param: 0x%x (%d)\n", fparam, fparam);
1262 /* OD param = 0x2 (bit 31:30), R param = 0x5 (bit 29:25) */
1263 pci_status = (0x8a001824 | (fparam << 16));
1265 pci_status = PCI_PLL_INIT;
1267 /* Initialize PLL. */
1268 VPRINTK("pci_status: 0x%x\n", pci_status);
1269 writel(pci_status, mmio + PDC_CTL_STATUS);
1270 readl(mmio + PDC_CTL_STATUS);
1273 Read SPD of DIMM by I2C interface,
1274 and program the DIMM Module Controller.
1276 if (!(speed = pdc20621_detect_dimm(host))) {
1277 printk(KERN_ERR "Detect Local DIMM Fail\n");
1278 return 1; /* DIMM error */
1280 VPRINTK("Local DIMM Speed = %d\n", speed);
1282 /* Programming DIMM0 Module Control Register (index_CID0:80h) */
1283 size = pdc20621_prog_dimm0(host);
1284 VPRINTK("Local DIMM Size = %dMB\n", size);
1286 /* Programming DIMM Module Global Control Register (index_CID0:88h) */
1287 if (pdc20621_prog_dimm_global(host)) {
1288 printk(KERN_ERR "Programming DIMM Module Global Control Register Fail\n");
1292 #ifdef ATA_VERBOSE_DEBUG
1294 u8 test_parttern1[40] =
1295 {0x55,0xAA,'P','r','o','m','i','s','e',' ',
1296 'N','o','t',' ','Y','e','t',' ',
1297 'D','e','f','i','n','e','d',' ',
1299 '9','8','0','3','1','6','1','2',0,0};
1300 u8 test_parttern2[40] = {0};
1302 pdc20621_put_to_dimm(host, test_parttern2, 0x10040, 40);
1303 pdc20621_put_to_dimm(host, test_parttern2, 0x40, 40);
1305 pdc20621_put_to_dimm(host, test_parttern1, 0x10040, 40);
1306 pdc20621_get_from_dimm(host, test_parttern2, 0x40, 40);
1307 printk(KERN_ERR "%x, %x, %s\n", test_parttern2[0],
1308 test_parttern2[1], &(test_parttern2[2]));
1309 pdc20621_get_from_dimm(host, test_parttern2, 0x10040,
1311 printk(KERN_ERR "%x, %x, %s\n", test_parttern2[0],
1312 test_parttern2[1], &(test_parttern2[2]));
1314 pdc20621_put_to_dimm(host, test_parttern1, 0x40, 40);
1315 pdc20621_get_from_dimm(host, test_parttern2, 0x40, 40);
1316 printk(KERN_ERR "%x, %x, %s\n", test_parttern2[0],
1317 test_parttern2[1], &(test_parttern2[2]));
1321 /* ECC initiliazation. */
1323 pdc20621_i2c_read(host, PDC_DIMM0_SPD_DEV_ADDRESS,
1324 PDC_DIMM_SPD_TYPE, &spd0);
1326 VPRINTK("Start ECC initialization\n");
1328 length = size * 1024 * 1024;
1329 while (addr < length) {
1330 pdc20621_put_to_dimm(host, (void *) &tmp, addr,
1332 addr += sizeof(u32);
1334 VPRINTK("Finish ECC initialization\n");
1340 static void pdc_20621_init(struct ata_host *host)
1343 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
1345 /* hard-code chip #0 */
1346 mmio += PDC_CHIP0_OFS;
1349 * Select page 0x40 for our 32k DIMM window
1351 tmp = readl(mmio + PDC_20621_DIMM_WINDOW) & 0xffff0000;
1352 tmp |= PDC_PAGE_WINDOW; /* page 40h; arbitrarily selected */
1353 writel(tmp, mmio + PDC_20621_DIMM_WINDOW);
1358 tmp = readl(mmio + PDC_HDMA_CTLSTAT);
1360 writel(tmp, mmio + PDC_HDMA_CTLSTAT);
1361 readl(mmio + PDC_HDMA_CTLSTAT); /* flush */
1365 tmp = readl(mmio + PDC_HDMA_CTLSTAT);
1367 writel(tmp, mmio + PDC_HDMA_CTLSTAT);
1368 readl(mmio + PDC_HDMA_CTLSTAT); /* flush */
1371 static int pdc_sata_init_one(struct pci_dev *pdev,
1372 const struct pci_device_id *ent)
1374 static int printed_version;
1375 const struct ata_port_info *ppi[] =
1376 { &pdc_port_info[ent->driver_data], NULL };
1377 struct ata_host *host;
1378 struct pdc_host_priv *hpriv;
1381 if (!printed_version++)
1382 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
1385 host = ata_host_alloc_pinfo(&pdev->dev, ppi, 4);
1386 hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL);
1387 if (!host || !hpriv)
1390 host->private_data = hpriv;
1392 /* acquire resources and fill host */
1393 rc = pcim_enable_device(pdev);
1397 rc = pcim_iomap_regions(pdev, (1 << PDC_MMIO_BAR) | (1 << PDC_DIMM_BAR),
1400 pcim_pin_device(pdev);
1403 host->iomap = pcim_iomap_table(pdev);
1405 for (i = 0; i < 4; i++) {
1406 struct ata_port *ap = host->ports[i];
1407 void __iomem *base = host->iomap[PDC_MMIO_BAR] + PDC_CHIP0_OFS;
1408 unsigned int offset = 0x200 + i * 0x80;
1410 pdc_sata_setup_port(&ap->ioaddr, base + offset);
1412 ata_port_pbar_desc(ap, PDC_MMIO_BAR, -1, "mmio");
1413 ata_port_pbar_desc(ap, PDC_DIMM_BAR, -1, "dimm");
1414 ata_port_pbar_desc(ap, PDC_MMIO_BAR, offset, "port");
1417 /* configure and activate */
1418 rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
1421 rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
1425 if (pdc20621_dimm_init(host))
1427 pdc_20621_init(host);
1429 pci_set_master(pdev);
1430 return ata_host_activate(host, pdev->irq, pdc20621_interrupt,
1431 IRQF_SHARED, &pdc_sata_sht);
1435 static int __init pdc_sata_init(void)
1437 return pci_register_driver(&pdc_sata_pci_driver);
1441 static void __exit pdc_sata_exit(void)
1443 pci_unregister_driver(&pdc_sata_pci_driver);
1447 MODULE_AUTHOR("Jeff Garzik");
1448 MODULE_DESCRIPTION("Promise SATA low-level driver");
1449 MODULE_LICENSE("GPL");
1450 MODULE_DEVICE_TABLE(pci, pdc_sata_pci_tbl);
1451 MODULE_VERSION(DRV_VERSION);
1453 module_init(pdc_sata_init);
1454 module_exit(pdc_sata_exit);