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_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 .tf_load = pdc_tf_load_mmio,
258 .tf_read = ata_tf_read,
259 .check_status = ata_check_status,
260 .exec_command = pdc_exec_command_mmio,
261 .dev_select = ata_std_dev_select,
262 .phy_reset = pdc_20621_phy_reset,
263 .qc_prep = pdc20621_qc_prep,
264 .qc_issue = pdc20621_qc_issue_prot,
265 .data_xfer = ata_data_xfer,
266 .eng_timeout = pdc_eng_timeout,
267 .irq_clear = pdc20621_irq_clear,
268 .irq_on = ata_irq_on,
269 .port_start = pdc_port_start,
272 static const struct ata_port_info pdc_port_info[] = {
275 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
276 ATA_FLAG_SRST | ATA_FLAG_MMIO |
277 ATA_FLAG_NO_ATAPI | ATA_FLAG_PIO_POLLING,
278 .pio_mask = 0x1f, /* pio0-4 */
279 .mwdma_mask = 0x07, /* mwdma0-2 */
280 .udma_mask = ATA_UDMA6,
281 .port_ops = &pdc_20621_ops,
286 static const struct pci_device_id pdc_sata_pci_tbl[] = {
287 { PCI_VDEVICE(PROMISE, 0x6622), board_20621 },
289 { } /* terminate list */
292 static struct pci_driver pdc_sata_pci_driver = {
294 .id_table = pdc_sata_pci_tbl,
295 .probe = pdc_sata_init_one,
296 .remove = ata_pci_remove_one,
300 static int pdc_port_start(struct ata_port *ap)
302 struct device *dev = ap->host->dev;
303 struct pdc_port_priv *pp;
306 rc = ata_port_start(ap);
310 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
314 pp->pkt = dmam_alloc_coherent(dev, 128, &pp->pkt_dma, GFP_KERNEL);
318 ap->private_data = pp;
323 static void pdc_20621_phy_reset(struct ata_port *ap)
326 ap->cbl = ATA_CBL_SATA;
331 static inline void pdc20621_ata_sg(struct ata_taskfile *tf, u8 *buf,
333 unsigned int total_len)
336 unsigned int dw = PDC_DIMM_APKT_PRD >> 2;
337 u32 *buf32 = (u32 *) buf;
339 /* output ATA packet S/G table */
340 addr = PDC_20621_DIMM_BASE + PDC_20621_DIMM_DATA +
341 (PDC_DIMM_DATA_STEP * portno);
342 VPRINTK("ATA sg addr 0x%x, %d\n", addr, addr);
343 buf32[dw] = cpu_to_le32(addr);
344 buf32[dw + 1] = cpu_to_le32(total_len | ATA_PRD_EOT);
346 VPRINTK("ATA PSG @ %x == (0x%x, 0x%x)\n",
347 PDC_20621_DIMM_BASE +
348 (PDC_DIMM_WINDOW_STEP * portno) +
350 buf32[dw], buf32[dw + 1]);
353 static inline void pdc20621_host_sg(struct ata_taskfile *tf, u8 *buf,
355 unsigned int total_len)
358 unsigned int dw = PDC_DIMM_HPKT_PRD >> 2;
359 u32 *buf32 = (u32 *) buf;
361 /* output Host DMA packet S/G table */
362 addr = PDC_20621_DIMM_BASE + PDC_20621_DIMM_DATA +
363 (PDC_DIMM_DATA_STEP * portno);
365 buf32[dw] = cpu_to_le32(addr);
366 buf32[dw + 1] = cpu_to_le32(total_len | ATA_PRD_EOT);
368 VPRINTK("HOST PSG @ %x == (0x%x, 0x%x)\n",
369 PDC_20621_DIMM_BASE +
370 (PDC_DIMM_WINDOW_STEP * portno) +
372 buf32[dw], buf32[dw + 1]);
375 static inline unsigned int pdc20621_ata_pkt(struct ata_taskfile *tf,
376 unsigned int devno, u8 *buf,
380 u32 *buf32 = (u32 *) buf;
383 unsigned int dimm_sg = PDC_20621_DIMM_BASE +
384 (PDC_DIMM_WINDOW_STEP * portno) +
386 VPRINTK("ENTER, dimm_sg == 0x%x, %d\n", dimm_sg, dimm_sg);
388 i = PDC_DIMM_ATA_PKT;
393 if ((tf->protocol == ATA_PROT_DMA) && (!(tf->flags & ATA_TFLAG_WRITE)))
394 buf[i++] = PDC_PKT_READ;
395 else if (tf->protocol == ATA_PROT_NODATA)
396 buf[i++] = PDC_PKT_NODATA;
399 buf[i++] = 0; /* reserved */
400 buf[i++] = portno + 1; /* seq. id */
401 buf[i++] = 0xff; /* delay seq. id */
403 /* dimm dma S/G, and next-pkt */
405 if (tf->protocol == ATA_PROT_NODATA)
408 buf32[dw] = cpu_to_le32(dimm_sg);
413 dev_reg = ATA_DEVICE_OBS;
415 dev_reg = ATA_DEVICE_OBS | ATA_DEV1;
418 buf[i++] = (1 << 5) | PDC_PKT_CLEAR_BSY | ATA_REG_DEVICE;
421 /* device control register */
422 buf[i++] = (1 << 5) | PDC_REG_DEVCTL;
428 static inline void pdc20621_host_pkt(struct ata_taskfile *tf, u8 *buf,
432 u32 tmp, *buf32 = (u32 *) buf;
434 unsigned int host_sg = PDC_20621_DIMM_BASE +
435 (PDC_DIMM_WINDOW_STEP * portno) +
437 unsigned int dimm_sg = PDC_20621_DIMM_BASE +
438 (PDC_DIMM_WINDOW_STEP * portno) +
440 VPRINTK("ENTER, dimm_sg == 0x%x, %d\n", dimm_sg, dimm_sg);
441 VPRINTK("host_sg == 0x%x, %d\n", host_sg, host_sg);
443 dw = PDC_DIMM_HOST_PKT >> 2;
446 * Set up Host DMA packet
448 if ((tf->protocol == ATA_PROT_DMA) && (!(tf->flags & ATA_TFLAG_WRITE)))
452 tmp |= ((portno + 1 + 4) << 16); /* seq. id */
453 tmp |= (0xff << 24); /* delay seq. id */
454 buf32[dw + 0] = cpu_to_le32(tmp);
455 buf32[dw + 1] = cpu_to_le32(host_sg);
456 buf32[dw + 2] = cpu_to_le32(dimm_sg);
459 VPRINTK("HOST PKT @ %x == (0x%x 0x%x 0x%x 0x%x)\n",
460 PDC_20621_DIMM_BASE + (PDC_DIMM_WINDOW_STEP * portno) +
468 static void pdc20621_dma_prep(struct ata_queued_cmd *qc)
470 struct scatterlist *sg;
471 struct ata_port *ap = qc->ap;
472 struct pdc_port_priv *pp = ap->private_data;
473 void __iomem *mmio = ap->host->iomap[PDC_MMIO_BAR];
474 void __iomem *dimm_mmio = ap->host->iomap[PDC_DIMM_BAR];
475 unsigned int portno = ap->port_no;
476 unsigned int i, idx, total_len = 0, sgt_len;
477 u32 *buf = (u32 *) &pp->dimm_buf[PDC_DIMM_HEADER_SZ];
479 WARN_ON(!(qc->flags & ATA_QCFLAG_DMAMAP));
481 VPRINTK("ata%u: ENTER\n", ap->print_id);
483 /* hard-code chip #0 */
484 mmio += PDC_CHIP0_OFS;
490 ata_for_each_sg(sg, qc) {
491 buf[idx++] = cpu_to_le32(sg_dma_address(sg));
492 buf[idx++] = cpu_to_le32(sg_dma_len(sg));
493 total_len += sg_dma_len(sg);
495 buf[idx - 1] |= cpu_to_le32(ATA_PRD_EOT);
499 * Build ATA, host DMA packets
501 pdc20621_host_sg(&qc->tf, &pp->dimm_buf[0], portno, total_len);
502 pdc20621_host_pkt(&qc->tf, &pp->dimm_buf[0], portno);
504 pdc20621_ata_sg(&qc->tf, &pp->dimm_buf[0], portno, total_len);
505 i = pdc20621_ata_pkt(&qc->tf, qc->dev->devno, &pp->dimm_buf[0], portno);
507 if (qc->tf.flags & ATA_TFLAG_LBA48)
508 i = pdc_prep_lba48(&qc->tf, &pp->dimm_buf[0], i);
510 i = pdc_prep_lba28(&qc->tf, &pp->dimm_buf[0], i);
512 pdc_pkt_footer(&qc->tf, &pp->dimm_buf[0], i);
514 /* copy three S/G tables and two packets to DIMM MMIO window */
515 memcpy_toio(dimm_mmio + (portno * PDC_DIMM_WINDOW_STEP),
516 &pp->dimm_buf, PDC_DIMM_HEADER_SZ);
517 memcpy_toio(dimm_mmio + (portno * PDC_DIMM_WINDOW_STEP) +
519 &pp->dimm_buf[PDC_DIMM_HEADER_SZ], sgt_len);
521 /* force host FIFO dump */
522 writel(0x00000001, mmio + PDC_20621_GENERAL_CTL);
524 readl(dimm_mmio); /* MMIO PCI posting flush */
526 VPRINTK("ata pkt buf ofs %u, prd size %u, mmio copied\n", i, sgt_len);
529 static void pdc20621_nodata_prep(struct ata_queued_cmd *qc)
531 struct ata_port *ap = qc->ap;
532 struct pdc_port_priv *pp = ap->private_data;
533 void __iomem *mmio = ap->host->iomap[PDC_MMIO_BAR];
534 void __iomem *dimm_mmio = ap->host->iomap[PDC_DIMM_BAR];
535 unsigned int portno = ap->port_no;
538 VPRINTK("ata%u: ENTER\n", ap->print_id);
540 /* hard-code chip #0 */
541 mmio += PDC_CHIP0_OFS;
543 i = pdc20621_ata_pkt(&qc->tf, qc->dev->devno, &pp->dimm_buf[0], portno);
545 if (qc->tf.flags & ATA_TFLAG_LBA48)
546 i = pdc_prep_lba48(&qc->tf, &pp->dimm_buf[0], i);
548 i = pdc_prep_lba28(&qc->tf, &pp->dimm_buf[0], i);
550 pdc_pkt_footer(&qc->tf, &pp->dimm_buf[0], i);
552 /* copy three S/G tables and two packets to DIMM MMIO window */
553 memcpy_toio(dimm_mmio + (portno * PDC_DIMM_WINDOW_STEP),
554 &pp->dimm_buf, PDC_DIMM_HEADER_SZ);
556 /* force host FIFO dump */
557 writel(0x00000001, mmio + PDC_20621_GENERAL_CTL);
559 readl(dimm_mmio); /* MMIO PCI posting flush */
561 VPRINTK("ata pkt buf ofs %u, mmio copied\n", i);
564 static void pdc20621_qc_prep(struct ata_queued_cmd *qc)
566 switch (qc->tf.protocol) {
568 pdc20621_dma_prep(qc);
570 case ATA_PROT_NODATA:
571 pdc20621_nodata_prep(qc);
578 static void __pdc20621_push_hdma(struct ata_queued_cmd *qc,
582 struct ata_port *ap = qc->ap;
583 struct ata_host *host = ap->host;
584 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
586 /* hard-code chip #0 */
587 mmio += PDC_CHIP0_OFS;
589 writel(0x00000001, mmio + PDC_20621_SEQCTL + (seq * 4));
590 readl(mmio + PDC_20621_SEQCTL + (seq * 4)); /* flush */
592 writel(pkt_ofs, mmio + PDC_HDMA_PKT_SUBMIT);
593 readl(mmio + PDC_HDMA_PKT_SUBMIT); /* flush */
596 static void pdc20621_push_hdma(struct ata_queued_cmd *qc,
600 struct ata_port *ap = qc->ap;
601 struct pdc_host_priv *pp = ap->host->private_data;
602 unsigned int idx = pp->hdma_prod & PDC_HDMA_Q_MASK;
604 if (!pp->doing_hdma) {
605 __pdc20621_push_hdma(qc, seq, pkt_ofs);
610 pp->hdma[idx].qc = qc;
611 pp->hdma[idx].seq = seq;
612 pp->hdma[idx].pkt_ofs = pkt_ofs;
616 static void pdc20621_pop_hdma(struct ata_queued_cmd *qc)
618 struct ata_port *ap = qc->ap;
619 struct pdc_host_priv *pp = ap->host->private_data;
620 unsigned int idx = pp->hdma_cons & PDC_HDMA_Q_MASK;
622 /* if nothing on queue, we're done */
623 if (pp->hdma_prod == pp->hdma_cons) {
628 __pdc20621_push_hdma(pp->hdma[idx].qc, pp->hdma[idx].seq,
629 pp->hdma[idx].pkt_ofs);
633 #ifdef ATA_VERBOSE_DEBUG
634 static void pdc20621_dump_hdma(struct ata_queued_cmd *qc)
636 struct ata_port *ap = qc->ap;
637 unsigned int port_no = ap->port_no;
638 void __iomem *dimm_mmio = ap->host->iomap[PDC_DIMM_BAR];
640 dimm_mmio += (port_no * PDC_DIMM_WINDOW_STEP);
641 dimm_mmio += PDC_DIMM_HOST_PKT;
643 printk(KERN_ERR "HDMA[0] == 0x%08X\n", readl(dimm_mmio));
644 printk(KERN_ERR "HDMA[1] == 0x%08X\n", readl(dimm_mmio + 4));
645 printk(KERN_ERR "HDMA[2] == 0x%08X\n", readl(dimm_mmio + 8));
646 printk(KERN_ERR "HDMA[3] == 0x%08X\n", readl(dimm_mmio + 12));
649 static inline void pdc20621_dump_hdma(struct ata_queued_cmd *qc) { }
650 #endif /* ATA_VERBOSE_DEBUG */
652 static void pdc20621_packet_start(struct ata_queued_cmd *qc)
654 struct ata_port *ap = qc->ap;
655 struct ata_host *host = ap->host;
656 unsigned int port_no = ap->port_no;
657 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
658 unsigned int rw = (qc->tf.flags & ATA_TFLAG_WRITE);
659 u8 seq = (u8) (port_no + 1);
660 unsigned int port_ofs;
662 /* hard-code chip #0 */
663 mmio += PDC_CHIP0_OFS;
665 VPRINTK("ata%u: ENTER\n", ap->print_id);
667 wmb(); /* flush PRD, pkt writes */
669 port_ofs = PDC_20621_DIMM_BASE + (PDC_DIMM_WINDOW_STEP * port_no);
671 /* if writing, we (1) DMA to DIMM, then (2) do ATA command */
672 if (rw && qc->tf.protocol == ATA_PROT_DMA) {
675 pdc20621_dump_hdma(qc);
676 pdc20621_push_hdma(qc, seq, port_ofs + PDC_DIMM_HOST_PKT);
677 VPRINTK("queued ofs 0x%x (%u), seq %u\n",
678 port_ofs + PDC_DIMM_HOST_PKT,
679 port_ofs + PDC_DIMM_HOST_PKT,
682 writel(0x00000001, mmio + PDC_20621_SEQCTL + (seq * 4));
683 readl(mmio + PDC_20621_SEQCTL + (seq * 4)); /* flush */
685 writel(port_ofs + PDC_DIMM_ATA_PKT,
686 ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT);
687 readl(ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT);
688 VPRINTK("submitted ofs 0x%x (%u), seq %u\n",
689 port_ofs + PDC_DIMM_ATA_PKT,
690 port_ofs + PDC_DIMM_ATA_PKT,
695 static unsigned int pdc20621_qc_issue_prot(struct ata_queued_cmd *qc)
697 switch (qc->tf.protocol) {
699 case ATA_PROT_NODATA:
700 pdc20621_packet_start(qc);
703 case ATA_PROT_ATAPI_DMA:
711 return ata_qc_issue_prot(qc);
714 static inline unsigned int pdc20621_host_intr(struct ata_port *ap,
715 struct ata_queued_cmd *qc,
716 unsigned int doing_hdma,
719 unsigned int port_no = ap->port_no;
720 unsigned int port_ofs =
721 PDC_20621_DIMM_BASE + (PDC_DIMM_WINDOW_STEP * port_no);
723 unsigned int handled = 0;
727 if ((qc->tf.protocol == ATA_PROT_DMA) && /* read */
728 (!(qc->tf.flags & ATA_TFLAG_WRITE))) {
730 /* step two - DMA from DIMM to host */
732 VPRINTK("ata%u: read hdma, 0x%x 0x%x\n", ap->print_id,
733 readl(mmio + 0x104), readl(mmio + PDC_HDMA_CTLSTAT));
734 /* get drive status; clear intr; complete txn */
735 qc->err_mask |= ac_err_mask(ata_wait_idle(ap));
737 pdc20621_pop_hdma(qc);
740 /* step one - exec ATA command */
742 u8 seq = (u8) (port_no + 1 + 4);
743 VPRINTK("ata%u: read ata, 0x%x 0x%x\n", ap->print_id,
744 readl(mmio + 0x104), readl(mmio + PDC_HDMA_CTLSTAT));
746 /* submit hdma pkt */
747 pdc20621_dump_hdma(qc);
748 pdc20621_push_hdma(qc, seq,
749 port_ofs + PDC_DIMM_HOST_PKT);
753 } else if (qc->tf.protocol == ATA_PROT_DMA) { /* write */
755 /* step one - DMA from host to DIMM */
757 u8 seq = (u8) (port_no + 1);
758 VPRINTK("ata%u: write hdma, 0x%x 0x%x\n", ap->print_id,
759 readl(mmio + 0x104), readl(mmio + PDC_HDMA_CTLSTAT));
762 writel(0x00000001, mmio + PDC_20621_SEQCTL + (seq * 4));
763 readl(mmio + PDC_20621_SEQCTL + (seq * 4));
764 writel(port_ofs + PDC_DIMM_ATA_PKT,
765 ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT);
766 readl(ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT);
769 /* step two - execute ATA command */
771 VPRINTK("ata%u: write ata, 0x%x 0x%x\n", ap->print_id,
772 readl(mmio + 0x104), readl(mmio + PDC_HDMA_CTLSTAT));
773 /* get drive status; clear intr; complete txn */
774 qc->err_mask |= ac_err_mask(ata_wait_idle(ap));
776 pdc20621_pop_hdma(qc);
780 /* command completion, but no data xfer */
781 } else if (qc->tf.protocol == ATA_PROT_NODATA) {
783 status = ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
784 DPRINTK("BUS_NODATA (drv_stat 0x%X)\n", status);
785 qc->err_mask |= ac_err_mask(status);
790 ap->stats.idle_irq++;
796 static void pdc20621_irq_clear(struct ata_port *ap)
798 struct ata_host *host = ap->host;
799 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
801 mmio += PDC_CHIP0_OFS;
803 readl(mmio + PDC_20621_SEQMASK);
806 static irqreturn_t pdc20621_interrupt(int irq, void *dev_instance)
808 struct ata_host *host = dev_instance;
811 unsigned int i, tmp, port_no;
812 unsigned int handled = 0;
813 void __iomem *mmio_base;
817 if (!host || !host->iomap[PDC_MMIO_BAR]) {
818 VPRINTK("QUICK EXIT\n");
822 mmio_base = host->iomap[PDC_MMIO_BAR];
824 /* reading should also clear interrupts */
825 mmio_base += PDC_CHIP0_OFS;
826 mask = readl(mmio_base + PDC_20621_SEQMASK);
827 VPRINTK("mask == 0x%x\n", mask);
829 if (mask == 0xffffffff) {
830 VPRINTK("QUICK EXIT 2\n");
833 mask &= 0xffff; /* only 16 tags possible */
835 VPRINTK("QUICK EXIT 3\n");
839 spin_lock(&host->lock);
841 for (i = 1; i < 9; i++) {
845 if (port_no >= host->n_ports)
848 ap = host->ports[port_no];
849 tmp = mask & (1 << i);
850 VPRINTK("seq %u, port_no %u, ap %p, tmp %x\n", i, port_no, ap, tmp);
852 !(ap->flags & ATA_FLAG_DISABLED)) {
853 struct ata_queued_cmd *qc;
855 qc = ata_qc_from_tag(ap, ap->link.active_tag);
856 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING)))
857 handled += pdc20621_host_intr(ap, qc, (i > 4),
862 spin_unlock(&host->lock);
864 VPRINTK("mask == 0x%x\n", mask);
868 return IRQ_RETVAL(handled);
871 static void pdc_eng_timeout(struct ata_port *ap)
874 struct ata_host *host = ap->host;
875 struct ata_queued_cmd *qc;
880 spin_lock_irqsave(&host->lock, flags);
882 qc = ata_qc_from_tag(ap, ap->link.active_tag);
884 switch (qc->tf.protocol) {
886 case ATA_PROT_NODATA:
887 ata_port_printk(ap, KERN_ERR, "command timeout\n");
888 qc->err_mask |= __ac_err_mask(ata_wait_idle(ap));
892 drv_stat = ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
894 ata_port_printk(ap, KERN_ERR,
895 "unknown timeout, cmd 0x%x stat 0x%x\n",
896 qc->tf.command, drv_stat);
898 qc->err_mask |= ac_err_mask(drv_stat);
902 spin_unlock_irqrestore(&host->lock, flags);
903 ata_eh_qc_complete(qc);
907 static void pdc_tf_load_mmio(struct ata_port *ap, const struct ata_taskfile *tf)
909 WARN_ON(tf->protocol == ATA_PROT_DMA ||
910 tf->protocol == ATA_PROT_NODATA);
915 static void pdc_exec_command_mmio(struct ata_port *ap, const struct ata_taskfile *tf)
917 WARN_ON(tf->protocol == ATA_PROT_DMA ||
918 tf->protocol == ATA_PROT_NODATA);
919 ata_exec_command(ap, tf);
923 static void pdc_sata_setup_port(struct ata_ioports *port, void __iomem *base)
925 port->cmd_addr = base;
926 port->data_addr = base;
928 port->error_addr = base + 0x4;
929 port->nsect_addr = base + 0x8;
930 port->lbal_addr = base + 0xc;
931 port->lbam_addr = base + 0x10;
932 port->lbah_addr = base + 0x14;
933 port->device_addr = base + 0x18;
935 port->status_addr = base + 0x1c;
936 port->altstatus_addr =
937 port->ctl_addr = base + 0x38;
941 #ifdef ATA_VERBOSE_DEBUG
942 static void pdc20621_get_from_dimm(struct ata_host *host, void *psource,
943 u32 offset, u32 size)
949 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
950 void __iomem *dimm_mmio = host->iomap[PDC_DIMM_BAR];
952 /* hard-code chip #0 */
953 mmio += PDC_CHIP0_OFS;
956 window_size = 0x2000 * 4; /* 32K byte uchar size */
957 idx = (u16) (offset / window_size);
959 writel(0x01, mmio + PDC_GENERAL_CTLR);
960 readl(mmio + PDC_GENERAL_CTLR);
961 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
962 readl(mmio + PDC_DIMM_WINDOW_CTLR);
964 offset -= (idx * window_size);
966 dist = ((long) (window_size - (offset + size))) >= 0 ? size :
967 (long) (window_size - offset);
968 memcpy_fromio((char *) psource, (char *) (dimm_mmio + offset / 4),
973 for (; (long) size >= (long) window_size ;) {
974 writel(0x01, mmio + PDC_GENERAL_CTLR);
975 readl(mmio + PDC_GENERAL_CTLR);
976 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
977 readl(mmio + PDC_DIMM_WINDOW_CTLR);
978 memcpy_fromio((char *) psource, (char *) (dimm_mmio),
980 psource += window_size;
986 writel(0x01, mmio + PDC_GENERAL_CTLR);
987 readl(mmio + PDC_GENERAL_CTLR);
988 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
989 readl(mmio + PDC_DIMM_WINDOW_CTLR);
990 memcpy_fromio((char *) psource, (char *) (dimm_mmio),
997 static void pdc20621_put_to_dimm(struct ata_host *host, void *psource,
998 u32 offset, u32 size)
1004 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
1005 void __iomem *dimm_mmio = host->iomap[PDC_DIMM_BAR];
1007 /* hard-code chip #0 */
1008 mmio += PDC_CHIP0_OFS;
1011 window_size = 0x2000 * 4; /* 32K byte uchar size */
1012 idx = (u16) (offset / window_size);
1014 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
1015 readl(mmio + PDC_DIMM_WINDOW_CTLR);
1016 offset -= (idx * window_size);
1018 dist = ((long)(s32)(window_size - (offset + size))) >= 0 ? size :
1019 (long) (window_size - offset);
1020 memcpy_toio(dimm_mmio + offset / 4, psource, dist);
1021 writel(0x01, mmio + PDC_GENERAL_CTLR);
1022 readl(mmio + PDC_GENERAL_CTLR);
1026 for (; (long) size >= (long) window_size ;) {
1027 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
1028 readl(mmio + PDC_DIMM_WINDOW_CTLR);
1029 memcpy_toio(dimm_mmio, psource, window_size / 4);
1030 writel(0x01, mmio + PDC_GENERAL_CTLR);
1031 readl(mmio + PDC_GENERAL_CTLR);
1032 psource += window_size;
1033 size -= window_size;
1038 writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR);
1039 readl(mmio + PDC_DIMM_WINDOW_CTLR);
1040 memcpy_toio(dimm_mmio, psource, size / 4);
1041 writel(0x01, mmio + PDC_GENERAL_CTLR);
1042 readl(mmio + PDC_GENERAL_CTLR);
1047 static unsigned int pdc20621_i2c_read(struct ata_host *host, u32 device,
1048 u32 subaddr, u32 *pdata)
1050 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
1055 /* hard-code chip #0 */
1056 mmio += PDC_CHIP0_OFS;
1058 i2creg |= device << 24;
1059 i2creg |= subaddr << 16;
1061 /* Set the device and subaddress */
1062 writel(i2creg, mmio + PDC_I2C_ADDR_DATA);
1063 readl(mmio + PDC_I2C_ADDR_DATA);
1065 /* Write Control to perform read operation, mask int */
1066 writel(PDC_I2C_READ | PDC_I2C_START | PDC_I2C_MASK_INT,
1067 mmio + PDC_I2C_CONTROL);
1069 for (count = 0; count <= 1000; count ++) {
1070 status = readl(mmio + PDC_I2C_CONTROL);
1071 if (status & PDC_I2C_COMPLETE) {
1072 status = readl(mmio + PDC_I2C_ADDR_DATA);
1074 } else if (count == 1000)
1078 *pdata = (status >> 8) & 0x000000ff;
1083 static int pdc20621_detect_dimm(struct ata_host *host)
1086 if (pdc20621_i2c_read(host, PDC_DIMM0_SPD_DEV_ADDRESS,
1087 PDC_DIMM_SPD_SYSTEM_FREQ, &data)) {
1093 if (pdc20621_i2c_read(host, PDC_DIMM0_SPD_DEV_ADDRESS, 9, &data)) {
1103 static int pdc20621_prog_dimm0(struct ata_host *host)
1109 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
1110 static const struct {
1113 } pdc_i2c_read_data [] = {
1114 { PDC_DIMM_SPD_TYPE, 11 },
1115 { PDC_DIMM_SPD_FRESH_RATE, 12 },
1116 { PDC_DIMM_SPD_COLUMN_NUM, 4 },
1117 { PDC_DIMM_SPD_ATTRIBUTE, 21 },
1118 { PDC_DIMM_SPD_ROW_NUM, 3 },
1119 { PDC_DIMM_SPD_BANK_NUM, 17 },
1120 { PDC_DIMM_SPD_MODULE_ROW, 5 },
1121 { PDC_DIMM_SPD_ROW_PRE_CHARGE, 27 },
1122 { PDC_DIMM_SPD_ROW_ACTIVE_DELAY, 28 },
1123 { PDC_DIMM_SPD_RAS_CAS_DELAY, 29 },
1124 { PDC_DIMM_SPD_ACTIVE_PRECHARGE, 30 },
1125 { PDC_DIMM_SPD_CAS_LATENCY, 18 },
1128 /* hard-code chip #0 */
1129 mmio += PDC_CHIP0_OFS;
1131 for (i = 0; i < ARRAY_SIZE(pdc_i2c_read_data); i++)
1132 pdc20621_i2c_read(host, PDC_DIMM0_SPD_DEV_ADDRESS,
1133 pdc_i2c_read_data[i].reg,
1134 &spd0[pdc_i2c_read_data[i].ofs]);
1136 data |= (spd0[4] - 8) | ((spd0[21] != 0) << 3) | ((spd0[3]-11) << 4);
1137 data |= ((spd0[17] / 4) << 6) | ((spd0[5] / 2) << 7) |
1138 ((((spd0[27] + 9) / 10) - 1) << 8) ;
1139 data |= (((((spd0[29] > spd0[28])
1140 ? spd0[29] : spd0[28]) + 9) / 10) - 1) << 10;
1141 data |= ((spd0[30] - spd0[29] + 9) / 10 - 2) << 12;
1143 if (spd0[18] & 0x08)
1144 data |= ((0x03) << 14);
1145 else if (spd0[18] & 0x04)
1146 data |= ((0x02) << 14);
1147 else if (spd0[18] & 0x01)
1148 data |= ((0x01) << 14);
1153 Calculate the size of bDIMMSize (power of 2) and
1154 merge the DIMM size by program start/end address.
1157 bdimmsize = spd0[4] + (spd0[5] / 2) + spd0[3] + (spd0[17] / 2) + 3;
1158 size = (1 << bdimmsize) >> 20; /* size = xxx(MB) */
1159 data |= (((size / 16) - 1) << 16);
1162 writel(data, mmio + PDC_DIMM0_CONTROL);
1163 readl(mmio + PDC_DIMM0_CONTROL);
1168 static unsigned int pdc20621_prog_dimm_global(struct ata_host *host)
1172 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
1174 /* hard-code chip #0 */
1175 mmio += PDC_CHIP0_OFS;
1178 Set To Default : DIMM Module Global Control Register (0x022259F1)
1179 DIMM Arbitration Disable (bit 20)
1180 DIMM Data/Control Output Driving Selection (bit12 - bit15)
1181 Refresh Enable (bit 17)
1185 writel(data, mmio + PDC_SDRAM_CONTROL);
1186 readl(mmio + PDC_SDRAM_CONTROL);
1188 /* Turn on for ECC */
1189 pdc20621_i2c_read(host, PDC_DIMM0_SPD_DEV_ADDRESS,
1190 PDC_DIMM_SPD_TYPE, &spd0);
1192 data |= (0x01 << 16);
1193 writel(data, mmio + PDC_SDRAM_CONTROL);
1194 readl(mmio + PDC_SDRAM_CONTROL);
1195 printk(KERN_ERR "Local DIMM ECC Enabled\n");
1198 /* DIMM Initialization Select/Enable (bit 18/19) */
1201 writel(data, mmio + PDC_SDRAM_CONTROL);
1204 for (i = 1; i <= 10; i++) { /* polling ~5 secs */
1205 data = readl(mmio + PDC_SDRAM_CONTROL);
1206 if (!(data & (1<<19))) {
1216 static unsigned int pdc20621_dimm_init(struct ata_host *host)
1218 int speed, size, length;
1219 u32 addr, spd0, pci_status;
1221 u32 time_period = 0;
1226 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
1228 /* hard-code chip #0 */
1229 mmio += PDC_CHIP0_OFS;
1231 /* Initialize PLL based upon PCI Bus Frequency */
1233 /* Initialize Time Period Register */
1234 writel(0xffffffff, mmio + PDC_TIME_PERIOD);
1235 time_period = readl(mmio + PDC_TIME_PERIOD);
1236 VPRINTK("Time Period Register (0x40): 0x%x\n", time_period);
1239 writel(PDC_TIMER_DEFAULT, mmio + PDC_TIME_CONTROL);
1240 readl(mmio + PDC_TIME_CONTROL);
1242 /* Wait 3 seconds */
1246 When timer is enabled, counter is decreased every internal
1250 tcount = readl(mmio + PDC_TIME_COUNTER);
1251 VPRINTK("Time Counter Register (0x44): 0x%x\n", tcount);
1254 If SX4 is on PCI-X bus, after 3 seconds, the timer counter
1255 register should be >= (0xffffffff - 3x10^8).
1257 if (tcount >= PCI_X_TCOUNT) {
1258 ticks = (time_period - tcount);
1259 VPRINTK("Num counters 0x%x (%d)\n", ticks, ticks);
1261 clock = (ticks / 300000);
1262 VPRINTK("10 * Internal clk = 0x%x (%d)\n", clock, clock);
1264 clock = (clock * 33);
1265 VPRINTK("10 * Internal clk * 33 = 0x%x (%d)\n", clock, clock);
1267 /* PLL F Param (bit 22:16) */
1268 fparam = (1400000 / clock) - 2;
1269 VPRINTK("PLL F Param: 0x%x (%d)\n", fparam, fparam);
1271 /* OD param = 0x2 (bit 31:30), R param = 0x5 (bit 29:25) */
1272 pci_status = (0x8a001824 | (fparam << 16));
1274 pci_status = PCI_PLL_INIT;
1276 /* Initialize PLL. */
1277 VPRINTK("pci_status: 0x%x\n", pci_status);
1278 writel(pci_status, mmio + PDC_CTL_STATUS);
1279 readl(mmio + PDC_CTL_STATUS);
1282 Read SPD of DIMM by I2C interface,
1283 and program the DIMM Module Controller.
1285 if (!(speed = pdc20621_detect_dimm(host))) {
1286 printk(KERN_ERR "Detect Local DIMM Fail\n");
1287 return 1; /* DIMM error */
1289 VPRINTK("Local DIMM Speed = %d\n", speed);
1291 /* Programming DIMM0 Module Control Register (index_CID0:80h) */
1292 size = pdc20621_prog_dimm0(host);
1293 VPRINTK("Local DIMM Size = %dMB\n", size);
1295 /* Programming DIMM Module Global Control Register (index_CID0:88h) */
1296 if (pdc20621_prog_dimm_global(host)) {
1297 printk(KERN_ERR "Programming DIMM Module Global Control Register Fail\n");
1301 #ifdef ATA_VERBOSE_DEBUG
1303 u8 test_parttern1[40] =
1304 {0x55,0xAA,'P','r','o','m','i','s','e',' ',
1305 'N','o','t',' ','Y','e','t',' ',
1306 '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, test_parttern2, 0x10040, 40);
1312 pdc20621_put_to_dimm(host, test_parttern2, 0x40, 40);
1314 pdc20621_put_to_dimm(host, test_parttern1, 0x10040, 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]));
1318 pdc20621_get_from_dimm(host, 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, test_parttern1, 0x40, 40);
1324 pdc20621_get_from_dimm(host, 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,
1381 const struct pci_device_id *ent)
1383 static int printed_version;
1384 const struct ata_port_info *ppi[] =
1385 { &pdc_port_info[ent->driver_data], NULL };
1386 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 for (i = 0; i < 4; i++) {
1415 struct ata_port *ap = host->ports[i];
1416 void __iomem *base = host->iomap[PDC_MMIO_BAR] + PDC_CHIP0_OFS;
1417 unsigned int offset = 0x200 + i * 0x80;
1419 pdc_sata_setup_port(&ap->ioaddr, base + offset);
1421 ata_port_pbar_desc(ap, PDC_MMIO_BAR, -1, "mmio");
1422 ata_port_pbar_desc(ap, PDC_DIMM_BAR, -1, "dimm");
1423 ata_port_pbar_desc(ap, PDC_MMIO_BAR, offset, "port");
1426 /* configure and activate */
1427 rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
1430 rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
1434 if (pdc20621_dimm_init(host))
1436 pdc_20621_init(host);
1438 pci_set_master(pdev);
1439 return ata_host_activate(host, pdev->irq, pdc20621_interrupt,
1440 IRQF_SHARED, &pdc_sata_sht);
1444 static int __init pdc_sata_init(void)
1446 return pci_register_driver(&pdc_sata_pci_driver);
1450 static void __exit pdc_sata_exit(void)
1452 pci_unregister_driver(&pdc_sata_pci_driver);
1456 MODULE_AUTHOR("Jeff Garzik");
1457 MODULE_DESCRIPTION("Promise SATA low-level driver");
1458 MODULE_LICENSE("GPL");
1459 MODULE_DEVICE_TABLE(pci, pdc_sata_pci_tbl);
1460 MODULE_VERSION(DRV_VERSION);
1462 module_init(pdc_sata_init);
1463 module_exit(pdc_sata_exit);