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 .tf_load = pdc_tf_load_mmio,
247 .tf_read = ata_sff_tf_read,
248 .check_status = ata_sff_check_status,
249 .exec_command = pdc_exec_command_mmio,
250 .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 .data_xfer = ata_sff_data_xfer,
255 .eng_timeout = pdc_eng_timeout,
256 .irq_clear = pdc20621_irq_clear,
257 .irq_on = ata_sff_irq_on,
258 .port_start = pdc_port_start,
261 static const struct ata_port_info pdc_port_info[] = {
264 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
265 ATA_FLAG_SRST | ATA_FLAG_MMIO |
266 ATA_FLAG_NO_ATAPI | ATA_FLAG_PIO_POLLING,
267 .pio_mask = 0x1f, /* pio0-4 */
268 .mwdma_mask = 0x07, /* mwdma0-2 */
269 .udma_mask = ATA_UDMA6,
270 .port_ops = &pdc_20621_ops,
275 static const struct pci_device_id pdc_sata_pci_tbl[] = {
276 { PCI_VDEVICE(PROMISE, 0x6622), board_20621 },
278 { } /* terminate list */
281 static struct pci_driver pdc_sata_pci_driver = {
283 .id_table = pdc_sata_pci_tbl,
284 .probe = pdc_sata_init_one,
285 .remove = ata_pci_remove_one,
289 static int pdc_port_start(struct ata_port *ap)
291 struct device *dev = ap->host->dev;
292 struct pdc_port_priv *pp;
295 rc = ata_port_start(ap);
299 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
303 pp->pkt = dmam_alloc_coherent(dev, 128, &pp->pkt_dma, GFP_KERNEL);
307 ap->private_data = pp;
312 static void pdc_20621_phy_reset(struct ata_port *ap)
315 ap->cbl = ATA_CBL_SATA;
320 static inline void pdc20621_ata_sg(struct ata_taskfile *tf, u8 *buf,
322 unsigned int total_len)
325 unsigned int dw = PDC_DIMM_APKT_PRD >> 2;
326 __le32 *buf32 = (__le32 *) buf;
328 /* output ATA packet S/G table */
329 addr = PDC_20621_DIMM_BASE + PDC_20621_DIMM_DATA +
330 (PDC_DIMM_DATA_STEP * portno);
331 VPRINTK("ATA sg addr 0x%x, %d\n", addr, addr);
332 buf32[dw] = cpu_to_le32(addr);
333 buf32[dw + 1] = cpu_to_le32(total_len | ATA_PRD_EOT);
335 VPRINTK("ATA PSG @ %x == (0x%x, 0x%x)\n",
336 PDC_20621_DIMM_BASE +
337 (PDC_DIMM_WINDOW_STEP * portno) +
339 buf32[dw], buf32[dw + 1]);
342 static inline void pdc20621_host_sg(struct ata_taskfile *tf, u8 *buf,
344 unsigned int total_len)
347 unsigned int dw = PDC_DIMM_HPKT_PRD >> 2;
348 __le32 *buf32 = (__le32 *) buf;
350 /* output Host DMA packet S/G table */
351 addr = PDC_20621_DIMM_BASE + PDC_20621_DIMM_DATA +
352 (PDC_DIMM_DATA_STEP * portno);
354 buf32[dw] = cpu_to_le32(addr);
355 buf32[dw + 1] = cpu_to_le32(total_len | ATA_PRD_EOT);
357 VPRINTK("HOST PSG @ %x == (0x%x, 0x%x)\n",
358 PDC_20621_DIMM_BASE +
359 (PDC_DIMM_WINDOW_STEP * portno) +
361 buf32[dw], buf32[dw + 1]);
364 static inline unsigned int pdc20621_ata_pkt(struct ata_taskfile *tf,
365 unsigned int devno, u8 *buf,
369 __le32 *buf32 = (__le32 *) buf;
372 unsigned int dimm_sg = PDC_20621_DIMM_BASE +
373 (PDC_DIMM_WINDOW_STEP * portno) +
375 VPRINTK("ENTER, dimm_sg == 0x%x, %d\n", dimm_sg, dimm_sg);
377 i = PDC_DIMM_ATA_PKT;
382 if ((tf->protocol == ATA_PROT_DMA) && (!(tf->flags & ATA_TFLAG_WRITE)))
383 buf[i++] = PDC_PKT_READ;
384 else if (tf->protocol == ATA_PROT_NODATA)
385 buf[i++] = PDC_PKT_NODATA;
388 buf[i++] = 0; /* reserved */
389 buf[i++] = portno + 1; /* seq. id */
390 buf[i++] = 0xff; /* delay seq. id */
392 /* dimm dma S/G, and next-pkt */
394 if (tf->protocol == ATA_PROT_NODATA)
397 buf32[dw] = cpu_to_le32(dimm_sg);
402 dev_reg = ATA_DEVICE_OBS;
404 dev_reg = ATA_DEVICE_OBS | ATA_DEV1;
407 buf[i++] = (1 << 5) | PDC_PKT_CLEAR_BSY | ATA_REG_DEVICE;
410 /* device control register */
411 buf[i++] = (1 << 5) | PDC_REG_DEVCTL;
417 static inline void pdc20621_host_pkt(struct ata_taskfile *tf, u8 *buf,
422 __le32 *buf32 = (__le32 *) buf;
424 unsigned int host_sg = PDC_20621_DIMM_BASE +
425 (PDC_DIMM_WINDOW_STEP * portno) +
427 unsigned int dimm_sg = PDC_20621_DIMM_BASE +
428 (PDC_DIMM_WINDOW_STEP * portno) +
430 VPRINTK("ENTER, dimm_sg == 0x%x, %d\n", dimm_sg, dimm_sg);
431 VPRINTK("host_sg == 0x%x, %d\n", host_sg, host_sg);
433 dw = PDC_DIMM_HOST_PKT >> 2;
436 * Set up Host DMA packet
438 if ((tf->protocol == ATA_PROT_DMA) && (!(tf->flags & ATA_TFLAG_WRITE)))
442 tmp |= ((portno + 1 + 4) << 16); /* seq. id */
443 tmp |= (0xff << 24); /* delay seq. id */
444 buf32[dw + 0] = cpu_to_le32(tmp);
445 buf32[dw + 1] = cpu_to_le32(host_sg);
446 buf32[dw + 2] = cpu_to_le32(dimm_sg);
449 VPRINTK("HOST PKT @ %x == (0x%x 0x%x 0x%x 0x%x)\n",
450 PDC_20621_DIMM_BASE + (PDC_DIMM_WINDOW_STEP * portno) +
458 static void pdc20621_dma_prep(struct ata_queued_cmd *qc)
460 struct scatterlist *sg;
461 struct ata_port *ap = qc->ap;
462 struct pdc_port_priv *pp = ap->private_data;
463 void __iomem *mmio = ap->host->iomap[PDC_MMIO_BAR];
464 void __iomem *dimm_mmio = ap->host->iomap[PDC_DIMM_BAR];
465 unsigned int portno = ap->port_no;
466 unsigned int i, si, idx, total_len = 0, sgt_len;
467 __le32 *buf = (__le32 *) &pp->dimm_buf[PDC_DIMM_HEADER_SZ];
469 WARN_ON(!(qc->flags & ATA_QCFLAG_DMAMAP));
471 VPRINTK("ata%u: ENTER\n", ap->print_id);
473 /* hard-code chip #0 */
474 mmio += PDC_CHIP0_OFS;
480 for_each_sg(qc->sg, sg, qc->n_elem, si) {
481 buf[idx++] = cpu_to_le32(sg_dma_address(sg));
482 buf[idx++] = cpu_to_le32(sg_dma_len(sg));
483 total_len += sg_dma_len(sg);
485 buf[idx - 1] |= cpu_to_le32(ATA_PRD_EOT);
489 * Build ATA, host DMA packets
491 pdc20621_host_sg(&qc->tf, &pp->dimm_buf[0], portno, total_len);
492 pdc20621_host_pkt(&qc->tf, &pp->dimm_buf[0], portno);
494 pdc20621_ata_sg(&qc->tf, &pp->dimm_buf[0], portno, total_len);
495 i = pdc20621_ata_pkt(&qc->tf, qc->dev->devno, &pp->dimm_buf[0], portno);
497 if (qc->tf.flags & ATA_TFLAG_LBA48)
498 i = pdc_prep_lba48(&qc->tf, &pp->dimm_buf[0], i);
500 i = pdc_prep_lba28(&qc->tf, &pp->dimm_buf[0], i);
502 pdc_pkt_footer(&qc->tf, &pp->dimm_buf[0], i);
504 /* copy three S/G tables and two packets to DIMM MMIO window */
505 memcpy_toio(dimm_mmio + (portno * PDC_DIMM_WINDOW_STEP),
506 &pp->dimm_buf, PDC_DIMM_HEADER_SZ);
507 memcpy_toio(dimm_mmio + (portno * PDC_DIMM_WINDOW_STEP) +
509 &pp->dimm_buf[PDC_DIMM_HEADER_SZ], sgt_len);
511 /* force host FIFO dump */
512 writel(0x00000001, mmio + PDC_20621_GENERAL_CTL);
514 readl(dimm_mmio); /* MMIO PCI posting flush */
516 VPRINTK("ata pkt buf ofs %u, prd size %u, mmio copied\n", i, sgt_len);
519 static void pdc20621_nodata_prep(struct ata_queued_cmd *qc)
521 struct ata_port *ap = qc->ap;
522 struct pdc_port_priv *pp = ap->private_data;
523 void __iomem *mmio = ap->host->iomap[PDC_MMIO_BAR];
524 void __iomem *dimm_mmio = ap->host->iomap[PDC_DIMM_BAR];
525 unsigned int portno = ap->port_no;
528 VPRINTK("ata%u: ENTER\n", ap->print_id);
530 /* hard-code chip #0 */
531 mmio += PDC_CHIP0_OFS;
533 i = pdc20621_ata_pkt(&qc->tf, qc->dev->devno, &pp->dimm_buf[0], portno);
535 if (qc->tf.flags & ATA_TFLAG_LBA48)
536 i = pdc_prep_lba48(&qc->tf, &pp->dimm_buf[0], i);
538 i = pdc_prep_lba28(&qc->tf, &pp->dimm_buf[0], i);
540 pdc_pkt_footer(&qc->tf, &pp->dimm_buf[0], i);
542 /* copy three S/G tables and two packets to DIMM MMIO window */
543 memcpy_toio(dimm_mmio + (portno * PDC_DIMM_WINDOW_STEP),
544 &pp->dimm_buf, PDC_DIMM_HEADER_SZ);
546 /* force host FIFO dump */
547 writel(0x00000001, mmio + PDC_20621_GENERAL_CTL);
549 readl(dimm_mmio); /* MMIO PCI posting flush */
551 VPRINTK("ata pkt buf ofs %u, mmio copied\n", i);
554 static void pdc20621_qc_prep(struct ata_queued_cmd *qc)
556 switch (qc->tf.protocol) {
558 pdc20621_dma_prep(qc);
560 case ATA_PROT_NODATA:
561 pdc20621_nodata_prep(qc);
568 static void __pdc20621_push_hdma(struct ata_queued_cmd *qc,
572 struct ata_port *ap = qc->ap;
573 struct ata_host *host = ap->host;
574 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
576 /* hard-code chip #0 */
577 mmio += PDC_CHIP0_OFS;
579 writel(0x00000001, mmio + PDC_20621_SEQCTL + (seq * 4));
580 readl(mmio + PDC_20621_SEQCTL + (seq * 4)); /* flush */
582 writel(pkt_ofs, mmio + PDC_HDMA_PKT_SUBMIT);
583 readl(mmio + PDC_HDMA_PKT_SUBMIT); /* flush */
586 static void pdc20621_push_hdma(struct ata_queued_cmd *qc,
590 struct ata_port *ap = qc->ap;
591 struct pdc_host_priv *pp = ap->host->private_data;
592 unsigned int idx = pp->hdma_prod & PDC_HDMA_Q_MASK;
594 if (!pp->doing_hdma) {
595 __pdc20621_push_hdma(qc, seq, pkt_ofs);
600 pp->hdma[idx].qc = qc;
601 pp->hdma[idx].seq = seq;
602 pp->hdma[idx].pkt_ofs = pkt_ofs;
606 static void pdc20621_pop_hdma(struct ata_queued_cmd *qc)
608 struct ata_port *ap = qc->ap;
609 struct pdc_host_priv *pp = ap->host->private_data;
610 unsigned int idx = pp->hdma_cons & PDC_HDMA_Q_MASK;
612 /* if nothing on queue, we're done */
613 if (pp->hdma_prod == pp->hdma_cons) {
618 __pdc20621_push_hdma(pp->hdma[idx].qc, pp->hdma[idx].seq,
619 pp->hdma[idx].pkt_ofs);
623 #ifdef ATA_VERBOSE_DEBUG
624 static void pdc20621_dump_hdma(struct ata_queued_cmd *qc)
626 struct ata_port *ap = qc->ap;
627 unsigned int port_no = ap->port_no;
628 void __iomem *dimm_mmio = ap->host->iomap[PDC_DIMM_BAR];
630 dimm_mmio += (port_no * PDC_DIMM_WINDOW_STEP);
631 dimm_mmio += PDC_DIMM_HOST_PKT;
633 printk(KERN_ERR "HDMA[0] == 0x%08X\n", readl(dimm_mmio));
634 printk(KERN_ERR "HDMA[1] == 0x%08X\n", readl(dimm_mmio + 4));
635 printk(KERN_ERR "HDMA[2] == 0x%08X\n", readl(dimm_mmio + 8));
636 printk(KERN_ERR "HDMA[3] == 0x%08X\n", readl(dimm_mmio + 12));
639 static inline void pdc20621_dump_hdma(struct ata_queued_cmd *qc) { }
640 #endif /* ATA_VERBOSE_DEBUG */
642 static void pdc20621_packet_start(struct ata_queued_cmd *qc)
644 struct ata_port *ap = qc->ap;
645 struct ata_host *host = ap->host;
646 unsigned int port_no = ap->port_no;
647 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
648 unsigned int rw = (qc->tf.flags & ATA_TFLAG_WRITE);
649 u8 seq = (u8) (port_no + 1);
650 unsigned int port_ofs;
652 /* hard-code chip #0 */
653 mmio += PDC_CHIP0_OFS;
655 VPRINTK("ata%u: ENTER\n", ap->print_id);
657 wmb(); /* flush PRD, pkt writes */
659 port_ofs = PDC_20621_DIMM_BASE + (PDC_DIMM_WINDOW_STEP * port_no);
661 /* if writing, we (1) DMA to DIMM, then (2) do ATA command */
662 if (rw && qc->tf.protocol == ATA_PROT_DMA) {
665 pdc20621_dump_hdma(qc);
666 pdc20621_push_hdma(qc, seq, port_ofs + PDC_DIMM_HOST_PKT);
667 VPRINTK("queued ofs 0x%x (%u), seq %u\n",
668 port_ofs + PDC_DIMM_HOST_PKT,
669 port_ofs + PDC_DIMM_HOST_PKT,
672 writel(0x00000001, mmio + PDC_20621_SEQCTL + (seq * 4));
673 readl(mmio + PDC_20621_SEQCTL + (seq * 4)); /* flush */
675 writel(port_ofs + PDC_DIMM_ATA_PKT,
676 ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT);
677 readl(ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT);
678 VPRINTK("submitted ofs 0x%x (%u), seq %u\n",
679 port_ofs + PDC_DIMM_ATA_PKT,
680 port_ofs + PDC_DIMM_ATA_PKT,
685 static unsigned int pdc20621_qc_issue(struct ata_queued_cmd *qc)
687 switch (qc->tf.protocol) {
689 case ATA_PROT_NODATA:
690 pdc20621_packet_start(qc);
701 return ata_sff_qc_issue(qc);
704 static inline unsigned int pdc20621_host_intr(struct ata_port *ap,
705 struct ata_queued_cmd *qc,
706 unsigned int doing_hdma,
709 unsigned int port_no = ap->port_no;
710 unsigned int port_ofs =
711 PDC_20621_DIMM_BASE + (PDC_DIMM_WINDOW_STEP * port_no);
713 unsigned int handled = 0;
717 if ((qc->tf.protocol == ATA_PROT_DMA) && /* read */
718 (!(qc->tf.flags & ATA_TFLAG_WRITE))) {
720 /* step two - DMA from DIMM to host */
722 VPRINTK("ata%u: read hdma, 0x%x 0x%x\n", ap->print_id,
723 readl(mmio + 0x104), readl(mmio + PDC_HDMA_CTLSTAT));
724 /* get drive status; clear intr; complete txn */
725 qc->err_mask |= ac_err_mask(ata_wait_idle(ap));
727 pdc20621_pop_hdma(qc);
730 /* step one - exec ATA command */
732 u8 seq = (u8) (port_no + 1 + 4);
733 VPRINTK("ata%u: read ata, 0x%x 0x%x\n", ap->print_id,
734 readl(mmio + 0x104), readl(mmio + PDC_HDMA_CTLSTAT));
736 /* submit hdma pkt */
737 pdc20621_dump_hdma(qc);
738 pdc20621_push_hdma(qc, seq,
739 port_ofs + PDC_DIMM_HOST_PKT);
743 } else if (qc->tf.protocol == ATA_PROT_DMA) { /* write */
745 /* step one - DMA from host to DIMM */
747 u8 seq = (u8) (port_no + 1);
748 VPRINTK("ata%u: write hdma, 0x%x 0x%x\n", ap->print_id,
749 readl(mmio + 0x104), readl(mmio + PDC_HDMA_CTLSTAT));
752 writel(0x00000001, mmio + PDC_20621_SEQCTL + (seq * 4));
753 readl(mmio + PDC_20621_SEQCTL + (seq * 4));
754 writel(port_ofs + PDC_DIMM_ATA_PKT,
755 ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT);
756 readl(ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT);
759 /* step two - execute ATA command */
761 VPRINTK("ata%u: write ata, 0x%x 0x%x\n", ap->print_id,
762 readl(mmio + 0x104), readl(mmio + PDC_HDMA_CTLSTAT));
763 /* get drive status; clear intr; complete txn */
764 qc->err_mask |= ac_err_mask(ata_wait_idle(ap));
766 pdc20621_pop_hdma(qc);
770 /* command completion, but no data xfer */
771 } else if (qc->tf.protocol == ATA_PROT_NODATA) {
773 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
774 DPRINTK("BUS_NODATA (drv_stat 0x%X)\n", status);
775 qc->err_mask |= ac_err_mask(status);
780 ap->stats.idle_irq++;
786 static void pdc20621_irq_clear(struct ata_port *ap)
788 struct ata_host *host = ap->host;
789 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
791 mmio += PDC_CHIP0_OFS;
793 readl(mmio + PDC_20621_SEQMASK);
796 static irqreturn_t pdc20621_interrupt(int irq, void *dev_instance)
798 struct ata_host *host = dev_instance;
801 unsigned int i, tmp, port_no;
802 unsigned int handled = 0;
803 void __iomem *mmio_base;
807 if (!host || !host->iomap[PDC_MMIO_BAR]) {
808 VPRINTK("QUICK EXIT\n");
812 mmio_base = host->iomap[PDC_MMIO_BAR];
814 /* reading should also clear interrupts */
815 mmio_base += PDC_CHIP0_OFS;
816 mask = readl(mmio_base + PDC_20621_SEQMASK);
817 VPRINTK("mask == 0x%x\n", mask);
819 if (mask == 0xffffffff) {
820 VPRINTK("QUICK EXIT 2\n");
823 mask &= 0xffff; /* only 16 tags possible */
825 VPRINTK("QUICK EXIT 3\n");
829 spin_lock(&host->lock);
831 for (i = 1; i < 9; i++) {
835 if (port_no >= host->n_ports)
838 ap = host->ports[port_no];
839 tmp = mask & (1 << i);
840 VPRINTK("seq %u, port_no %u, ap %p, tmp %x\n", i, port_no, ap, tmp);
842 !(ap->flags & ATA_FLAG_DISABLED)) {
843 struct ata_queued_cmd *qc;
845 qc = ata_qc_from_tag(ap, ap->link.active_tag);
846 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING)))
847 handled += pdc20621_host_intr(ap, qc, (i > 4),
852 spin_unlock(&host->lock);
854 VPRINTK("mask == 0x%x\n", mask);
858 return IRQ_RETVAL(handled);
861 static void pdc_eng_timeout(struct ata_port *ap)
864 struct ata_host *host = ap->host;
865 struct ata_queued_cmd *qc;
870 spin_lock_irqsave(&host->lock, flags);
872 qc = ata_qc_from_tag(ap, ap->link.active_tag);
874 switch (qc->tf.protocol) {
876 case ATA_PROT_NODATA:
877 ata_port_printk(ap, KERN_ERR, "command timeout\n");
878 qc->err_mask |= __ac_err_mask(ata_wait_idle(ap));
882 drv_stat = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
884 ata_port_printk(ap, KERN_ERR,
885 "unknown timeout, cmd 0x%x stat 0x%x\n",
886 qc->tf.command, drv_stat);
888 qc->err_mask |= ac_err_mask(drv_stat);
892 spin_unlock_irqrestore(&host->lock, flags);
893 ata_eh_qc_complete(qc);
897 static void pdc_tf_load_mmio(struct ata_port *ap, const struct ata_taskfile *tf)
899 WARN_ON(tf->protocol == ATA_PROT_DMA ||
900 tf->protocol == ATA_PROT_NODATA);
901 ata_sff_tf_load(ap, tf);
905 static void pdc_exec_command_mmio(struct ata_port *ap, const struct ata_taskfile *tf)
907 WARN_ON(tf->protocol == ATA_PROT_DMA ||
908 tf->protocol == ATA_PROT_NODATA);
909 ata_sff_exec_command(ap, tf);
913 static void pdc_sata_setup_port(struct ata_ioports *port, void __iomem *base)
915 port->cmd_addr = base;
916 port->data_addr = base;
918 port->error_addr = base + 0x4;
919 port->nsect_addr = base + 0x8;
920 port->lbal_addr = base + 0xc;
921 port->lbam_addr = base + 0x10;
922 port->lbah_addr = base + 0x14;
923 port->device_addr = base + 0x18;
925 port->status_addr = base + 0x1c;
926 port->altstatus_addr =
927 port->ctl_addr = base + 0x38;
931 #ifdef ATA_VERBOSE_DEBUG
932 static void pdc20621_get_from_dimm(struct ata_host *host, void *psource,
933 u32 offset, u32 size)
939 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
940 void __iomem *dimm_mmio = host->iomap[PDC_DIMM_BAR];
942 /* hard-code chip #0 */
943 mmio += PDC_CHIP0_OFS;
946 window_size = 0x2000 * 4; /* 32K byte uchar size */
947 idx = (u16) (offset / window_size);
949 writel(0x01, mmio + PDC_GENERAL_CTLR);
950 readl(mmio + PDC_GENERAL_CTLR);
951 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
952 readl(mmio + PDC_DIMM_WINDOW_CTLR);
954 offset -= (idx * window_size);
956 dist = ((long) (window_size - (offset + size))) >= 0 ? size :
957 (long) (window_size - offset);
958 memcpy_fromio((char *) psource, (char *) (dimm_mmio + offset / 4),
963 for (; (long) size >= (long) window_size ;) {
964 writel(0x01, mmio + PDC_GENERAL_CTLR);
965 readl(mmio + PDC_GENERAL_CTLR);
966 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
967 readl(mmio + PDC_DIMM_WINDOW_CTLR);
968 memcpy_fromio((char *) psource, (char *) (dimm_mmio),
970 psource += 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),
987 static void pdc20621_put_to_dimm(struct ata_host *host, void *psource,
988 u32 offset, u32 size)
994 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
995 void __iomem *dimm_mmio = host->iomap[PDC_DIMM_BAR];
997 /* hard-code chip #0 */
998 mmio += PDC_CHIP0_OFS;
1001 window_size = 0x2000 * 4; /* 32K byte uchar size */
1002 idx = (u16) (offset / window_size);
1004 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
1005 readl(mmio + PDC_DIMM_WINDOW_CTLR);
1006 offset -= (idx * window_size);
1008 dist = ((long)(s32)(window_size - (offset + size))) >= 0 ? size :
1009 (long) (window_size - offset);
1010 memcpy_toio(dimm_mmio + offset / 4, psource, dist);
1011 writel(0x01, mmio + PDC_GENERAL_CTLR);
1012 readl(mmio + PDC_GENERAL_CTLR);
1016 for (; (long) size >= (long) window_size ;) {
1017 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
1018 readl(mmio + PDC_DIMM_WINDOW_CTLR);
1019 memcpy_toio(dimm_mmio, psource, window_size / 4);
1020 writel(0x01, mmio + PDC_GENERAL_CTLR);
1021 readl(mmio + PDC_GENERAL_CTLR);
1022 psource += window_size;
1023 size -= window_size;
1028 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
1029 readl(mmio + PDC_DIMM_WINDOW_CTLR);
1030 memcpy_toio(dimm_mmio, psource, size / 4);
1031 writel(0x01, mmio + PDC_GENERAL_CTLR);
1032 readl(mmio + PDC_GENERAL_CTLR);
1037 static unsigned int pdc20621_i2c_read(struct ata_host *host, u32 device,
1038 u32 subaddr, u32 *pdata)
1040 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
1045 /* hard-code chip #0 */
1046 mmio += PDC_CHIP0_OFS;
1048 i2creg |= device << 24;
1049 i2creg |= subaddr << 16;
1051 /* Set the device and subaddress */
1052 writel(i2creg, mmio + PDC_I2C_ADDR_DATA);
1053 readl(mmio + PDC_I2C_ADDR_DATA);
1055 /* Write Control to perform read operation, mask int */
1056 writel(PDC_I2C_READ | PDC_I2C_START | PDC_I2C_MASK_INT,
1057 mmio + PDC_I2C_CONTROL);
1059 for (count = 0; count <= 1000; count ++) {
1060 status = readl(mmio + PDC_I2C_CONTROL);
1061 if (status & PDC_I2C_COMPLETE) {
1062 status = readl(mmio + PDC_I2C_ADDR_DATA);
1064 } else if (count == 1000)
1068 *pdata = (status >> 8) & 0x000000ff;
1073 static int pdc20621_detect_dimm(struct ata_host *host)
1076 if (pdc20621_i2c_read(host, PDC_DIMM0_SPD_DEV_ADDRESS,
1077 PDC_DIMM_SPD_SYSTEM_FREQ, &data)) {
1083 if (pdc20621_i2c_read(host, PDC_DIMM0_SPD_DEV_ADDRESS, 9, &data)) {
1093 static int pdc20621_prog_dimm0(struct ata_host *host)
1099 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
1100 static const struct {
1103 } pdc_i2c_read_data [] = {
1104 { PDC_DIMM_SPD_TYPE, 11 },
1105 { PDC_DIMM_SPD_FRESH_RATE, 12 },
1106 { PDC_DIMM_SPD_COLUMN_NUM, 4 },
1107 { PDC_DIMM_SPD_ATTRIBUTE, 21 },
1108 { PDC_DIMM_SPD_ROW_NUM, 3 },
1109 { PDC_DIMM_SPD_BANK_NUM, 17 },
1110 { PDC_DIMM_SPD_MODULE_ROW, 5 },
1111 { PDC_DIMM_SPD_ROW_PRE_CHARGE, 27 },
1112 { PDC_DIMM_SPD_ROW_ACTIVE_DELAY, 28 },
1113 { PDC_DIMM_SPD_RAS_CAS_DELAY, 29 },
1114 { PDC_DIMM_SPD_ACTIVE_PRECHARGE, 30 },
1115 { PDC_DIMM_SPD_CAS_LATENCY, 18 },
1118 /* hard-code chip #0 */
1119 mmio += PDC_CHIP0_OFS;
1121 for (i = 0; i < ARRAY_SIZE(pdc_i2c_read_data); i++)
1122 pdc20621_i2c_read(host, PDC_DIMM0_SPD_DEV_ADDRESS,
1123 pdc_i2c_read_data[i].reg,
1124 &spd0[pdc_i2c_read_data[i].ofs]);
1126 data |= (spd0[4] - 8) | ((spd0[21] != 0) << 3) | ((spd0[3]-11) << 4);
1127 data |= ((spd0[17] / 4) << 6) | ((spd0[5] / 2) << 7) |
1128 ((((spd0[27] + 9) / 10) - 1) << 8) ;
1129 data |= (((((spd0[29] > spd0[28])
1130 ? spd0[29] : spd0[28]) + 9) / 10) - 1) << 10;
1131 data |= ((spd0[30] - spd0[29] + 9) / 10 - 2) << 12;
1133 if (spd0[18] & 0x08)
1134 data |= ((0x03) << 14);
1135 else if (spd0[18] & 0x04)
1136 data |= ((0x02) << 14);
1137 else if (spd0[18] & 0x01)
1138 data |= ((0x01) << 14);
1143 Calculate the size of bDIMMSize (power of 2) and
1144 merge the DIMM size by program start/end address.
1147 bdimmsize = spd0[4] + (spd0[5] / 2) + spd0[3] + (spd0[17] / 2) + 3;
1148 size = (1 << bdimmsize) >> 20; /* size = xxx(MB) */
1149 data |= (((size / 16) - 1) << 16);
1152 writel(data, mmio + PDC_DIMM0_CONTROL);
1153 readl(mmio + PDC_DIMM0_CONTROL);
1158 static unsigned int pdc20621_prog_dimm_global(struct ata_host *host)
1162 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
1164 /* hard-code chip #0 */
1165 mmio += PDC_CHIP0_OFS;
1168 Set To Default : DIMM Module Global Control Register (0x022259F1)
1169 DIMM Arbitration Disable (bit 20)
1170 DIMM Data/Control Output Driving Selection (bit12 - bit15)
1171 Refresh Enable (bit 17)
1175 writel(data, mmio + PDC_SDRAM_CONTROL);
1176 readl(mmio + PDC_SDRAM_CONTROL);
1178 /* Turn on for ECC */
1179 pdc20621_i2c_read(host, PDC_DIMM0_SPD_DEV_ADDRESS,
1180 PDC_DIMM_SPD_TYPE, &spd0);
1182 data |= (0x01 << 16);
1183 writel(data, mmio + PDC_SDRAM_CONTROL);
1184 readl(mmio + PDC_SDRAM_CONTROL);
1185 printk(KERN_ERR "Local DIMM ECC Enabled\n");
1188 /* DIMM Initialization Select/Enable (bit 18/19) */
1191 writel(data, mmio + PDC_SDRAM_CONTROL);
1194 for (i = 1; i <= 10; i++) { /* polling ~5 secs */
1195 data = readl(mmio + PDC_SDRAM_CONTROL);
1196 if (!(data & (1<<19))) {
1206 static unsigned int pdc20621_dimm_init(struct ata_host *host)
1208 int speed, size, length;
1209 u32 addr, spd0, pci_status;
1211 u32 time_period = 0;
1216 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
1218 /* hard-code chip #0 */
1219 mmio += PDC_CHIP0_OFS;
1221 /* Initialize PLL based upon PCI Bus Frequency */
1223 /* Initialize Time Period Register */
1224 writel(0xffffffff, mmio + PDC_TIME_PERIOD);
1225 time_period = readl(mmio + PDC_TIME_PERIOD);
1226 VPRINTK("Time Period Register (0x40): 0x%x\n", time_period);
1229 writel(PDC_TIMER_DEFAULT, mmio + PDC_TIME_CONTROL);
1230 readl(mmio + PDC_TIME_CONTROL);
1232 /* Wait 3 seconds */
1236 When timer is enabled, counter is decreased every internal
1240 tcount = readl(mmio + PDC_TIME_COUNTER);
1241 VPRINTK("Time Counter Register (0x44): 0x%x\n", tcount);
1244 If SX4 is on PCI-X bus, after 3 seconds, the timer counter
1245 register should be >= (0xffffffff - 3x10^8).
1247 if (tcount >= PCI_X_TCOUNT) {
1248 ticks = (time_period - tcount);
1249 VPRINTK("Num counters 0x%x (%d)\n", ticks, ticks);
1251 clock = (ticks / 300000);
1252 VPRINTK("10 * Internal clk = 0x%x (%d)\n", clock, clock);
1254 clock = (clock * 33);
1255 VPRINTK("10 * Internal clk * 33 = 0x%x (%d)\n", clock, clock);
1257 /* PLL F Param (bit 22:16) */
1258 fparam = (1400000 / clock) - 2;
1259 VPRINTK("PLL F Param: 0x%x (%d)\n", fparam, fparam);
1261 /* OD param = 0x2 (bit 31:30), R param = 0x5 (bit 29:25) */
1262 pci_status = (0x8a001824 | (fparam << 16));
1264 pci_status = PCI_PLL_INIT;
1266 /* Initialize PLL. */
1267 VPRINTK("pci_status: 0x%x\n", pci_status);
1268 writel(pci_status, mmio + PDC_CTL_STATUS);
1269 readl(mmio + PDC_CTL_STATUS);
1272 Read SPD of DIMM by I2C interface,
1273 and program the DIMM Module Controller.
1275 if (!(speed = pdc20621_detect_dimm(host))) {
1276 printk(KERN_ERR "Detect Local DIMM Fail\n");
1277 return 1; /* DIMM error */
1279 VPRINTK("Local DIMM Speed = %d\n", speed);
1281 /* Programming DIMM0 Module Control Register (index_CID0:80h) */
1282 size = pdc20621_prog_dimm0(host);
1283 VPRINTK("Local DIMM Size = %dMB\n", size);
1285 /* Programming DIMM Module Global Control Register (index_CID0:88h) */
1286 if (pdc20621_prog_dimm_global(host)) {
1287 printk(KERN_ERR "Programming DIMM Module Global Control Register Fail\n");
1291 #ifdef ATA_VERBOSE_DEBUG
1293 u8 test_parttern1[40] =
1294 {0x55,0xAA,'P','r','o','m','i','s','e',' ',
1295 'N','o','t',' ','Y','e','t',' ',
1296 'D','e','f','i','n','e','d',' ',
1298 '9','8','0','3','1','6','1','2',0,0};
1299 u8 test_parttern2[40] = {0};
1301 pdc20621_put_to_dimm(host, test_parttern2, 0x10040, 40);
1302 pdc20621_put_to_dimm(host, test_parttern2, 0x40, 40);
1304 pdc20621_put_to_dimm(host, test_parttern1, 0x10040, 40);
1305 pdc20621_get_from_dimm(host, test_parttern2, 0x40, 40);
1306 printk(KERN_ERR "%x, %x, %s\n", test_parttern2[0],
1307 test_parttern2[1], &(test_parttern2[2]));
1308 pdc20621_get_from_dimm(host, test_parttern2, 0x10040,
1310 printk(KERN_ERR "%x, %x, %s\n", test_parttern2[0],
1311 test_parttern2[1], &(test_parttern2[2]));
1313 pdc20621_put_to_dimm(host, test_parttern1, 0x40, 40);
1314 pdc20621_get_from_dimm(host, test_parttern2, 0x40, 40);
1315 printk(KERN_ERR "%x, %x, %s\n", test_parttern2[0],
1316 test_parttern2[1], &(test_parttern2[2]));
1320 /* ECC initiliazation. */
1322 pdc20621_i2c_read(host, PDC_DIMM0_SPD_DEV_ADDRESS,
1323 PDC_DIMM_SPD_TYPE, &spd0);
1325 VPRINTK("Start ECC initialization\n");
1327 length = size * 1024 * 1024;
1328 while (addr < length) {
1329 pdc20621_put_to_dimm(host, (void *) &tmp, addr,
1331 addr += sizeof(u32);
1333 VPRINTK("Finish ECC initialization\n");
1339 static void pdc_20621_init(struct ata_host *host)
1342 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
1344 /* hard-code chip #0 */
1345 mmio += PDC_CHIP0_OFS;
1348 * Select page 0x40 for our 32k DIMM window
1350 tmp = readl(mmio + PDC_20621_DIMM_WINDOW) & 0xffff0000;
1351 tmp |= PDC_PAGE_WINDOW; /* page 40h; arbitrarily selected */
1352 writel(tmp, mmio + PDC_20621_DIMM_WINDOW);
1357 tmp = readl(mmio + PDC_HDMA_CTLSTAT);
1359 writel(tmp, mmio + PDC_HDMA_CTLSTAT);
1360 readl(mmio + PDC_HDMA_CTLSTAT); /* flush */
1364 tmp = readl(mmio + PDC_HDMA_CTLSTAT);
1366 writel(tmp, mmio + PDC_HDMA_CTLSTAT);
1367 readl(mmio + PDC_HDMA_CTLSTAT); /* flush */
1370 static int pdc_sata_init_one(struct pci_dev *pdev,
1371 const struct pci_device_id *ent)
1373 static int printed_version;
1374 const struct ata_port_info *ppi[] =
1375 { &pdc_port_info[ent->driver_data], NULL };
1376 struct ata_host *host;
1377 struct pdc_host_priv *hpriv;
1380 if (!printed_version++)
1381 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
1384 host = ata_host_alloc_pinfo(&pdev->dev, ppi, 4);
1385 hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL);
1386 if (!host || !hpriv)
1389 host->private_data = hpriv;
1391 /* acquire resources and fill host */
1392 rc = pcim_enable_device(pdev);
1396 rc = pcim_iomap_regions(pdev, (1 << PDC_MMIO_BAR) | (1 << PDC_DIMM_BAR),
1399 pcim_pin_device(pdev);
1402 host->iomap = pcim_iomap_table(pdev);
1404 for (i = 0; i < 4; i++) {
1405 struct ata_port *ap = host->ports[i];
1406 void __iomem *base = host->iomap[PDC_MMIO_BAR] + PDC_CHIP0_OFS;
1407 unsigned int offset = 0x200 + i * 0x80;
1409 pdc_sata_setup_port(&ap->ioaddr, base + offset);
1411 ata_port_pbar_desc(ap, PDC_MMIO_BAR, -1, "mmio");
1412 ata_port_pbar_desc(ap, PDC_DIMM_BAR, -1, "dimm");
1413 ata_port_pbar_desc(ap, PDC_MMIO_BAR, offset, "port");
1416 /* configure and activate */
1417 rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
1420 rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
1424 if (pdc20621_dimm_init(host))
1426 pdc_20621_init(host);
1428 pci_set_master(pdev);
1429 return ata_host_activate(host, pdev->irq, pdc20621_interrupt,
1430 IRQF_SHARED, &pdc_sata_sht);
1434 static int __init pdc_sata_init(void)
1436 return pci_register_driver(&pdc_sata_pci_driver);
1440 static void __exit pdc_sata_exit(void)
1442 pci_unregister_driver(&pdc_sata_pci_driver);
1446 MODULE_AUTHOR("Jeff Garzik");
1447 MODULE_DESCRIPTION("Promise SATA low-level driver");
1448 MODULE_LICENSE("GPL");
1449 MODULE_DEVICE_TABLE(pci, pdc_sata_pci_tbl);
1450 MODULE_VERSION(DRV_VERSION);
1452 module_init(pdc_sata_init);
1453 module_exit(pdc_sata_exit);