1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Promise PATA TX2/TX4/TX2000/133 IDE driver for pdc20268 to pdc20277.
6 * Albert Lee <albertcc@tw.ibm.com> IBM Corporation
8 * Copyright (C) 1998-2002 Andre Hedrick <andre@linux-ide.org>
9 * Portions Copyright (C) 1999 Promise Technology, Inc.
11 * Author: Frank Tiernan (frankt@promise.com)
12 * Released under terms of General Public License
14 * libata documentation is available via 'make {ps|pdf}docs',
15 * as Documentation/driver-api/libata.rst
17 * Hardware information only available under NDA.
19 #include <linux/kernel.h>
20 #include <linux/module.h>
21 #include <linux/pci.h>
22 #include <linux/blkdev.h>
23 #include <linux/delay.h>
24 #include <linux/device.h>
25 #include <linux/ktime.h>
26 #include <scsi/scsi.h>
27 #include <scsi/scsi_host.h>
28 #include <scsi/scsi_cmnd.h>
29 #include <linux/libata.h>
31 #define DRV_NAME "pata_pdc2027x"
32 #define DRV_VERSION "1.0"
36 #define PDPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args)
38 #define PDPRINTK(fmt, args...)
47 PDC_100_MHZ = 100000000,
48 PDC_133_MHZ = 133333333,
52 PDC_GLOBAL_CTL = 0x1108,
55 PDC_BYTE_COUNT = 0x1120,
59 static int pdc2027x_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
60 #ifdef CONFIG_PM_SLEEP
61 static int pdc2027x_reinit_one(struct pci_dev *pdev);
63 static int pdc2027x_prereset(struct ata_link *link, unsigned long deadline);
64 static void pdc2027x_set_piomode(struct ata_port *ap, struct ata_device *adev);
65 static void pdc2027x_set_dmamode(struct ata_port *ap, struct ata_device *adev);
66 static int pdc2027x_check_atapi_dma(struct ata_queued_cmd *qc);
67 static unsigned long pdc2027x_mode_filter(struct ata_device *adev, unsigned long mask);
68 static int pdc2027x_cable_detect(struct ata_port *ap);
69 static int pdc2027x_set_mode(struct ata_link *link, struct ata_device **r_failed);
72 * ATA Timing Tables based on 133MHz controller clock.
73 * These tables are only used when the controller is in 133MHz clock.
74 * If the controller is in 100MHz clock, the ASIC hardware will
75 * set the timing registers automatically when "set feature" command
76 * is issued to the device. However, if the controller clock is 133MHz,
77 * the following tables must be used.
79 static const struct pdc2027x_pio_timing {
80 u8 value0, value1, value2;
81 } pdc2027x_pio_timing_tbl[] = {
82 { 0xfb, 0x2b, 0xac }, /* PIO mode 0 */
83 { 0x46, 0x29, 0xa4 }, /* PIO mode 1 */
84 { 0x23, 0x26, 0x64 }, /* PIO mode 2 */
85 { 0x27, 0x0d, 0x35 }, /* PIO mode 3, IORDY on, Prefetch off */
86 { 0x23, 0x09, 0x25 }, /* PIO mode 4, IORDY on, Prefetch off */
89 static const struct pdc2027x_mdma_timing {
91 } pdc2027x_mdma_timing_tbl[] = {
92 { 0xdf, 0x5f }, /* MDMA mode 0 */
93 { 0x6b, 0x27 }, /* MDMA mode 1 */
94 { 0x69, 0x25 }, /* MDMA mode 2 */
97 static const struct pdc2027x_udma_timing {
98 u8 value0, value1, value2;
99 } pdc2027x_udma_timing_tbl[] = {
100 { 0x4a, 0x0f, 0xd5 }, /* UDMA mode 0 */
101 { 0x3a, 0x0a, 0xd0 }, /* UDMA mode 1 */
102 { 0x2a, 0x07, 0xcd }, /* UDMA mode 2 */
103 { 0x1a, 0x05, 0xcd }, /* UDMA mode 3 */
104 { 0x1a, 0x03, 0xcd }, /* UDMA mode 4 */
105 { 0x1a, 0x02, 0xcb }, /* UDMA mode 5 */
106 { 0x1a, 0x01, 0xcb }, /* UDMA mode 6 */
109 static const struct pci_device_id pdc2027x_pci_tbl[] = {
110 { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20268), PDC_UDMA_100 },
111 { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20269), PDC_UDMA_133 },
112 { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20270), PDC_UDMA_100 },
113 { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20271), PDC_UDMA_133 },
114 { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20275), PDC_UDMA_133 },
115 { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20276), PDC_UDMA_133 },
116 { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20277), PDC_UDMA_133 },
118 { } /* terminate list */
121 static struct pci_driver pdc2027x_pci_driver = {
123 .id_table = pdc2027x_pci_tbl,
124 .probe = pdc2027x_init_one,
125 .remove = ata_pci_remove_one,
126 #ifdef CONFIG_PM_SLEEP
127 .suspend = ata_pci_device_suspend,
128 .resume = pdc2027x_reinit_one,
132 static struct scsi_host_template pdc2027x_sht = {
133 ATA_BMDMA_SHT(DRV_NAME),
136 static struct ata_port_operations pdc2027x_pata100_ops = {
137 .inherits = &ata_bmdma_port_ops,
138 .check_atapi_dma = pdc2027x_check_atapi_dma,
139 .cable_detect = pdc2027x_cable_detect,
140 .prereset = pdc2027x_prereset,
143 static struct ata_port_operations pdc2027x_pata133_ops = {
144 .inherits = &pdc2027x_pata100_ops,
145 .mode_filter = pdc2027x_mode_filter,
146 .set_piomode = pdc2027x_set_piomode,
147 .set_dmamode = pdc2027x_set_dmamode,
148 .set_mode = pdc2027x_set_mode,
151 static struct ata_port_info pdc2027x_port_info[] = {
154 .flags = ATA_FLAG_SLAVE_POSS,
155 .pio_mask = ATA_PIO4,
156 .mwdma_mask = ATA_MWDMA2,
157 .udma_mask = ATA_UDMA5,
158 .port_ops = &pdc2027x_pata100_ops,
162 .flags = ATA_FLAG_SLAVE_POSS,
163 .pio_mask = ATA_PIO4,
164 .mwdma_mask = ATA_MWDMA2,
165 .udma_mask = ATA_UDMA6,
166 .port_ops = &pdc2027x_pata133_ops,
170 MODULE_AUTHOR("Andre Hedrick, Frank Tiernan, Albert Lee");
171 MODULE_DESCRIPTION("libata driver module for Promise PDC20268 to PDC20277");
172 MODULE_LICENSE("GPL");
173 MODULE_VERSION(DRV_VERSION);
174 MODULE_DEVICE_TABLE(pci, pdc2027x_pci_tbl);
177 * port_mmio - Get the MMIO address of PDC2027x extended registers
179 * @offset: offset from mmio base
181 static inline void __iomem *port_mmio(struct ata_port *ap, unsigned int offset)
183 return ap->host->iomap[PDC_MMIO_BAR] + ap->port_no * 0x100 + offset;
187 * dev_mmio - Get the MMIO address of PDC2027x extended registers
190 * @offset: offset from mmio base
192 static inline void __iomem *dev_mmio(struct ata_port *ap, struct ata_device *adev, unsigned int offset)
194 u8 adj = (adev->devno) ? 0x08 : 0x00;
195 return port_mmio(ap, offset) + adj;
199 * pdc2027x_cable_detect - Probe host controller cable detect info
200 * @ap: Port for which cable detect info is desired
202 * Read 80c cable indicator from Promise extended register.
203 * This register is latched when the system is reset.
206 * None (inherited from caller).
208 static int pdc2027x_cable_detect(struct ata_port *ap)
212 /* check cable detect results */
213 cgcr = ioread32(port_mmio(ap, PDC_GLOBAL_CTL));
214 if (cgcr & (1 << 26))
217 PDPRINTK("No cable or 80-conductor cable on port %d\n", ap->port_no);
219 return ATA_CBL_PATA80;
221 printk(KERN_INFO DRV_NAME ": 40-conductor cable detected on port %d\n", ap->port_no);
222 return ATA_CBL_PATA40;
226 * pdc2027x_port_enabled - Check PDC ATA control register to see whether the port is enabled.
229 static inline int pdc2027x_port_enabled(struct ata_port *ap)
231 return ioread8(port_mmio(ap, PDC_ATA_CTL)) & 0x02;
235 * pdc2027x_prereset - prereset for PATA host controller
237 * @deadline: deadline jiffies for the operation
239 * Probeinit including cable detection.
242 * None (inherited from caller).
245 static int pdc2027x_prereset(struct ata_link *link, unsigned long deadline)
247 /* Check whether port enabled */
248 if (!pdc2027x_port_enabled(link->ap))
250 return ata_sff_prereset(link, deadline);
254 * pdc2027x_mode_filter - mode selection filter
256 * @mask: list of modes proposed
258 * Block UDMA on devices that cause trouble with this controller.
261 static unsigned long pdc2027x_mode_filter(struct ata_device *adev, unsigned long mask)
263 unsigned char model_num[ATA_ID_PROD_LEN + 1];
264 struct ata_device *pair = ata_dev_pair(adev);
266 if (adev->class != ATA_DEV_ATA || adev->devno == 0 || pair == NULL)
269 /* Check for slave of a Maxtor at UDMA6 */
270 ata_id_c_string(pair->id, model_num, ATA_ID_PROD,
271 ATA_ID_PROD_LEN + 1);
272 /* If the master is a maxtor in UDMA6 then the slave should not use UDMA 6 */
273 if (strstr(model_num, "Maxtor") == NULL && pair->dma_mode == XFER_UDMA_6)
274 mask &= ~ (1 << (6 + ATA_SHIFT_UDMA));
280 * pdc2027x_set_piomode - Initialize host controller PATA PIO timings
281 * @ap: Port to configure
284 * Set PIO mode for device.
287 * None (inherited from caller).
290 static void pdc2027x_set_piomode(struct ata_port *ap, struct ata_device *adev)
292 unsigned int pio = adev->pio_mode - XFER_PIO_0;
295 PDPRINTK("adev->pio_mode[%X]\n", adev->pio_mode);
299 printk(KERN_ERR DRV_NAME ": Unknown pio mode [%d] ignored\n", pio);
304 /* Set the PIO timing registers using value table for 133MHz */
305 PDPRINTK("Set pio regs... \n");
307 ctcr0 = ioread32(dev_mmio(ap, adev, PDC_CTCR0));
309 ctcr0 |= pdc2027x_pio_timing_tbl[pio].value0 |
310 (pdc2027x_pio_timing_tbl[pio].value1 << 8);
311 iowrite32(ctcr0, dev_mmio(ap, adev, PDC_CTCR0));
313 ctcr1 = ioread32(dev_mmio(ap, adev, PDC_CTCR1));
315 ctcr1 |= (pdc2027x_pio_timing_tbl[pio].value2 << 24);
316 iowrite32(ctcr1, dev_mmio(ap, adev, PDC_CTCR1));
318 PDPRINTK("Set pio regs done\n");
320 PDPRINTK("Set to pio mode[%u] \n", pio);
324 * pdc2027x_set_dmamode - Initialize host controller PATA UDMA timings
325 * @ap: Port to configure
328 * Set UDMA mode for device.
331 * None (inherited from caller).
333 static void pdc2027x_set_dmamode(struct ata_port *ap, struct ata_device *adev)
335 unsigned int dma_mode = adev->dma_mode;
338 if ((dma_mode >= XFER_UDMA_0) &&
339 (dma_mode <= XFER_UDMA_6)) {
340 /* Set the UDMA timing registers with value table for 133MHz */
341 unsigned int udma_mode = dma_mode & 0x07;
343 if (dma_mode == XFER_UDMA_2) {
346 * If tHOLD is '1', the hardware will add half clock for data hold time.
347 * This code segment seems to be no effect. tHOLD will be overwritten below.
349 ctcr1 = ioread32(dev_mmio(ap, adev, PDC_CTCR1));
350 iowrite32(ctcr1 & ~(1 << 7), dev_mmio(ap, adev, PDC_CTCR1));
353 PDPRINTK("Set udma regs... \n");
355 ctcr1 = ioread32(dev_mmio(ap, adev, PDC_CTCR1));
357 ctcr1 |= pdc2027x_udma_timing_tbl[udma_mode].value0 |
358 (pdc2027x_udma_timing_tbl[udma_mode].value1 << 8) |
359 (pdc2027x_udma_timing_tbl[udma_mode].value2 << 16);
360 iowrite32(ctcr1, dev_mmio(ap, adev, PDC_CTCR1));
362 PDPRINTK("Set udma regs done\n");
364 PDPRINTK("Set to udma mode[%u] \n", udma_mode);
366 } else if ((dma_mode >= XFER_MW_DMA_0) &&
367 (dma_mode <= XFER_MW_DMA_2)) {
368 /* Set the MDMA timing registers with value table for 133MHz */
369 unsigned int mdma_mode = dma_mode & 0x07;
371 PDPRINTK("Set mdma regs... \n");
372 ctcr0 = ioread32(dev_mmio(ap, adev, PDC_CTCR0));
375 ctcr0 |= (pdc2027x_mdma_timing_tbl[mdma_mode].value0 << 16) |
376 (pdc2027x_mdma_timing_tbl[mdma_mode].value1 << 24);
378 iowrite32(ctcr0, dev_mmio(ap, adev, PDC_CTCR0));
379 PDPRINTK("Set mdma regs done\n");
381 PDPRINTK("Set to mdma mode[%u] \n", mdma_mode);
383 printk(KERN_ERR DRV_NAME ": Unknown dma mode [%u] ignored\n", dma_mode);
388 * pdc2027x_set_mode - Set the timing registers back to correct values.
389 * @link: link to configure
390 * @r_failed: Returned device for failure
392 * The pdc2027x hardware will look at "SET FEATURES" and change the timing registers
393 * automatically. The values set by the hardware might be incorrect, under 133Mhz PLL.
394 * This function overwrites the possibly incorrect values set by the hardware to be correct.
396 static int pdc2027x_set_mode(struct ata_link *link, struct ata_device **r_failed)
398 struct ata_port *ap = link->ap;
399 struct ata_device *dev;
402 rc = ata_do_set_mode(link, r_failed);
406 ata_for_each_dev(dev, link, ENABLED) {
407 pdc2027x_set_piomode(ap, dev);
410 * Enable prefetch if the device support PIO only.
412 if (dev->xfer_shift == ATA_SHIFT_PIO) {
413 u32 ctcr1 = ioread32(dev_mmio(ap, dev, PDC_CTCR1));
415 iowrite32(ctcr1, dev_mmio(ap, dev, PDC_CTCR1));
417 PDPRINTK("Turn on prefetch\n");
419 pdc2027x_set_dmamode(ap, dev);
426 * pdc2027x_check_atapi_dma - Check whether ATAPI DMA can be supported for this command
427 * @qc: Metadata associated with taskfile to check
430 * None (inherited from caller).
432 * RETURNS: 0 when ATAPI DMA can be used
435 static int pdc2027x_check_atapi_dma(struct ata_queued_cmd *qc)
437 struct scsi_cmnd *cmd = qc->scsicmd;
438 u8 *scsicmd = cmd->cmnd;
439 int rc = 1; /* atapi dma off by default */
442 * This workaround is from Promise's GPL driver.
443 * If ATAPI DMA is used for commands not in the
444 * following white list, say MODE_SENSE and REQUEST_SENSE,
445 * pdc2027x might hit the irq lost problem.
447 switch (scsicmd[0]) {
454 case 0xad: /* READ_DVD_STRUCTURE */
455 case 0xbe: /* READ_CD */
456 /* ATAPI DMA is ok */
467 * pdc_read_counter - Read the ctr counter
468 * @host: target ATA host
471 static long pdc_read_counter(struct ata_host *host)
473 void __iomem *mmio_base = host->iomap[PDC_MMIO_BAR];
476 u32 bccrl, bccrh, bccrlv, bccrhv;
479 bccrl = ioread32(mmio_base + PDC_BYTE_COUNT) & 0x7fff;
480 bccrh = ioread32(mmio_base + PDC_BYTE_COUNT + 0x100) & 0x7fff;
482 /* Read the counter values again for verification */
483 bccrlv = ioread32(mmio_base + PDC_BYTE_COUNT) & 0x7fff;
484 bccrhv = ioread32(mmio_base + PDC_BYTE_COUNT + 0x100) & 0x7fff;
486 counter = (bccrh << 15) | bccrl;
488 PDPRINTK("bccrh [%X] bccrl [%X]\n", bccrh, bccrl);
489 PDPRINTK("bccrhv[%X] bccrlv[%X]\n", bccrhv, bccrlv);
492 * The 30-bit decreasing counter are read by 2 pieces.
493 * Incorrect value may be read when both bccrh and bccrl are changing.
494 * Ex. When 7900 decrease to 78FF, wrong value 7800 might be read.
496 if (retry && !(bccrh == bccrhv && bccrl >= bccrlv)) {
498 PDPRINTK("rereading counter\n");
506 * pdc_adjust_pll - Adjust the PLL input clock in Hz.
508 * @host: target ATA host
509 * @pll_clock: The input of PLL in HZ
510 * @board_idx: board identifier
512 static void pdc_adjust_pll(struct ata_host *host, long pll_clock, unsigned int board_idx)
514 void __iomem *mmio_base = host->iomap[PDC_MMIO_BAR];
516 long pll_clock_khz = pll_clock / 1000;
517 long pout_required = board_idx? PDC_133_MHZ:PDC_100_MHZ;
518 long ratio = pout_required / pll_clock_khz;
522 if (unlikely(pll_clock_khz < 5000L || pll_clock_khz > 70000L)) {
523 printk(KERN_ERR DRV_NAME ": Invalid PLL input clock %ldkHz, give up!\n", pll_clock_khz);
528 PDPRINTK("pout_required is %ld\n", pout_required);
530 /* Show the current clock value of PLL control register
531 * (maybe already configured by the firmware)
533 pll_ctl = ioread16(mmio_base + PDC_PLL_CTL);
535 PDPRINTK("pll_ctl[%X]\n", pll_ctl);
539 * Calculate the ratio of F, R and OD
540 * POUT = (F + 2) / (( R + 2) * NO)
542 if (ratio < 8600L) { /* 8.6x */
543 /* Using NO = 0x01, R = 0x0D */
545 } else if (ratio < 12900L) { /* 12.9x */
546 /* Using NO = 0x01, R = 0x08 */
548 } else if (ratio < 16100L) { /* 16.1x */
549 /* Using NO = 0x01, R = 0x06 */
551 } else if (ratio < 64000L) { /* 64x */
555 printk(KERN_ERR DRV_NAME ": Invalid ratio %ld, give up!\n", ratio);
559 F = (ratio * (R+2)) / 1000 - 2;
561 if (unlikely(F < 0 || F > 127)) {
563 printk(KERN_ERR DRV_NAME ": F[%d] invalid!\n", F);
567 PDPRINTK("F[%d] R[%d] ratio*1000[%ld]\n", F, R, ratio);
569 pll_ctl = (R << 8) | F;
571 PDPRINTK("Writing pll_ctl[%X]\n", pll_ctl);
573 iowrite16(pll_ctl, mmio_base + PDC_PLL_CTL);
574 ioread16(mmio_base + PDC_PLL_CTL); /* flush */
576 /* Wait the PLL circuit to be stable */
581 * Show the current clock value of PLL control register
582 * (maybe configured by the firmware)
584 pll_ctl = ioread16(mmio_base + PDC_PLL_CTL);
586 PDPRINTK("pll_ctl[%X]\n", pll_ctl);
593 * pdc_detect_pll_input_clock - Detect the PLL input clock in Hz.
594 * @host: target ATA host
595 * Ex. 16949000 on 33MHz PCI bus for pdc20275.
596 * Half of the PCI clock.
598 static long pdc_detect_pll_input_clock(struct ata_host *host)
600 void __iomem *mmio_base = host->iomap[PDC_MMIO_BAR];
602 long start_count, end_count;
603 ktime_t start_time, end_time;
604 long pll_clock, usec_elapsed;
606 /* Start the test mode */
607 scr = ioread32(mmio_base + PDC_SYS_CTL);
608 PDPRINTK("scr[%X]\n", scr);
609 iowrite32(scr | (0x01 << 14), mmio_base + PDC_SYS_CTL);
610 ioread32(mmio_base + PDC_SYS_CTL); /* flush */
612 /* Read current counter value */
613 start_count = pdc_read_counter(host);
614 start_time = ktime_get();
616 /* Let the counter run for 100 ms. */
619 /* Read the counter values again */
620 end_count = pdc_read_counter(host);
621 end_time = ktime_get();
623 /* Stop the test mode */
624 scr = ioread32(mmio_base + PDC_SYS_CTL);
625 PDPRINTK("scr[%X]\n", scr);
626 iowrite32(scr & ~(0x01 << 14), mmio_base + PDC_SYS_CTL);
627 ioread32(mmio_base + PDC_SYS_CTL); /* flush */
629 /* calculate the input clock in Hz */
630 usec_elapsed = (long) ktime_us_delta(end_time, start_time);
632 pll_clock = ((start_count - end_count) & 0x3fffffff) / 100 *
633 (100000000 / usec_elapsed);
635 PDPRINTK("start[%ld] end[%ld] \n", start_count, end_count);
636 PDPRINTK("PLL input clock[%ld]Hz\n", pll_clock);
642 * pdc_hardware_init - Initialize the hardware.
643 * @host: target ATA host
644 * @board_idx: board identifier
646 static void pdc_hardware_init(struct ata_host *host, unsigned int board_idx)
651 * Detect PLL input clock rate.
652 * On some system, where PCI bus is running at non-standard clock rate.
653 * Ex. 25MHz or 40MHz, we have to adjust the cycle_time.
654 * The pdc20275 controller employs PLL circuit to help correct timing registers setting.
656 pll_clock = pdc_detect_pll_input_clock(host);
658 dev_info(host->dev, "PLL input clock %ld kHz\n", pll_clock/1000);
660 /* Adjust PLL control register */
661 pdc_adjust_pll(host, pll_clock, board_idx);
665 * pdc_ata_setup_port - setup the mmio address
666 * @port: ata ioports to setup
667 * @base: base address
669 static void pdc_ata_setup_port(struct ata_ioports *port, void __iomem *base)
672 port->data_addr = base;
674 port->error_addr = base + 0x05;
675 port->nsect_addr = base + 0x0a;
676 port->lbal_addr = base + 0x0f;
677 port->lbam_addr = base + 0x10;
678 port->lbah_addr = base + 0x15;
679 port->device_addr = base + 0x1a;
681 port->status_addr = base + 0x1f;
682 port->altstatus_addr =
683 port->ctl_addr = base + 0x81a;
687 * pdc2027x_init_one - PCI probe function
688 * Called when an instance of PCI adapter is inserted.
689 * This function checks whether the hardware is supported,
690 * initialize hardware and register an instance of ata_host to
691 * libata. (implements struct pci_driver.probe() )
693 * @pdev: instance of pci_dev found
694 * @ent: matching entry in the id_tbl[]
696 static int pdc2027x_init_one(struct pci_dev *pdev,
697 const struct pci_device_id *ent)
699 static const unsigned long cmd_offset[] = { 0x17c0, 0x15c0 };
700 static const unsigned long bmdma_offset[] = { 0x1000, 0x1008 };
701 unsigned int board_idx = (unsigned int) ent->driver_data;
702 const struct ata_port_info *ppi[] =
703 { &pdc2027x_port_info[board_idx], NULL };
704 struct ata_host *host;
705 void __iomem *mmio_base;
708 ata_print_version_once(&pdev->dev, DRV_VERSION);
711 host = ata_host_alloc_pinfo(&pdev->dev, ppi, 2);
715 /* acquire resources and fill host */
716 rc = pcim_enable_device(pdev);
720 rc = pcim_iomap_regions(pdev, 1 << PDC_MMIO_BAR, DRV_NAME);
723 host->iomap = pcim_iomap_table(pdev);
725 rc = dma_set_mask_and_coherent(&pdev->dev, ATA_DMA_MASK);
729 mmio_base = host->iomap[PDC_MMIO_BAR];
731 for (i = 0; i < 2; i++) {
732 struct ata_port *ap = host->ports[i];
734 pdc_ata_setup_port(&ap->ioaddr, mmio_base + cmd_offset[i]);
735 ap->ioaddr.bmdma_addr = mmio_base + bmdma_offset[i];
737 ata_port_pbar_desc(ap, PDC_MMIO_BAR, -1, "mmio");
738 ata_port_pbar_desc(ap, PDC_MMIO_BAR, cmd_offset[i], "cmd");
741 //pci_enable_intx(pdev);
743 /* initialize adapter */
744 pdc_hardware_init(host, board_idx);
746 pci_set_master(pdev);
747 return ata_host_activate(host, pdev->irq, ata_bmdma_interrupt,
748 IRQF_SHARED, &pdc2027x_sht);
751 #ifdef CONFIG_PM_SLEEP
752 static int pdc2027x_reinit_one(struct pci_dev *pdev)
754 struct ata_host *host = pci_get_drvdata(pdev);
755 unsigned int board_idx;
758 rc = ata_pci_device_do_resume(pdev);
762 if (pdev->device == PCI_DEVICE_ID_PROMISE_20268 ||
763 pdev->device == PCI_DEVICE_ID_PROMISE_20270)
764 board_idx = PDC_UDMA_100;
766 board_idx = PDC_UDMA_133;
768 pdc_hardware_init(host, board_idx);
770 ata_host_resume(host);
775 module_pci_driver(pdc2027x_pci_driver);