2 * Support for IDE interfaces on Celleb platform
4 * (C) Copyright 2006 TOSHIBA CORPORATION
6 * This code is based on drivers/ide/pci/siimage.c:
7 * Copyright (C) 2001-2002 Andre Hedrick <andre@linux-ide.org>
8 * Copyright (C) 2003 Red Hat <alan@redhat.com>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License along
21 * with this program; if not, write to the Free Software Foundation, Inc.,
22 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
25 #include <linux/types.h>
26 #include <linux/module.h>
27 #include <linux/pci.h>
28 #include <linux/delay.h>
29 #include <linux/hdreg.h>
30 #include <linux/ide.h>
31 #include <linux/init.h>
33 #define PCI_DEVICE_ID_TOSHIBA_SCC_ATA 0x01b4
35 #define SCC_PATA_NAME "scc IDE"
37 #define TDVHSEL_MASTER 0x00000001
38 #define TDVHSEL_SLAVE 0x00000004
40 #define MODE_JCUSFEN 0x00000080
42 #define CCKCTRL_ATARESET 0x00040000
43 #define CCKCTRL_BUFCNT 0x00020000
44 #define CCKCTRL_CRST 0x00010000
45 #define CCKCTRL_OCLKEN 0x00000100
46 #define CCKCTRL_ATACLKOEN 0x00000002
47 #define CCKCTRL_LCLKEN 0x00000001
49 #define QCHCD_IOS_SS 0x00000001
51 #define QCHSD_STPDIAG 0x00020000
53 #define INTMASK_MSK 0xD1000012
54 #define INTSTS_SERROR 0x80000000
55 #define INTSTS_PRERR 0x40000000
56 #define INTSTS_RERR 0x10000000
57 #define INTSTS_ICERR 0x01000000
58 #define INTSTS_BMSINT 0x00000010
59 #define INTSTS_BMHE 0x00000008
60 #define INTSTS_IOIRQS 0x00000004
61 #define INTSTS_INTRQ 0x00000002
62 #define INTSTS_ACTEINT 0x00000001
64 #define ECMODE_VALUE 0x01
66 static struct scc_ports {
67 unsigned long ctl, dma;
68 ide_hwif_t *hwif; /* for removing port from system */
69 } scc_ports[MAX_HWIFS];
71 /* PIO transfer mode table */
73 static unsigned long JCHSTtbl[2][7] = {
74 {0x0E, 0x05, 0x02, 0x03, 0x02, 0x00, 0x00}, /* 100MHz */
75 {0x13, 0x07, 0x04, 0x04, 0x03, 0x00, 0x00} /* 133MHz */
79 static unsigned long JCHHTtbl[2][7] = {
80 {0x0E, 0x02, 0x02, 0x02, 0x02, 0x00, 0x00}, /* 100MHz */
81 {0x13, 0x03, 0x03, 0x03, 0x03, 0x00, 0x00} /* 133MHz */
85 static unsigned long JCHCTtbl[2][7] = {
86 {0x1D, 0x1D, 0x1C, 0x0B, 0x06, 0x00, 0x00}, /* 100MHz */
87 {0x27, 0x26, 0x26, 0x0E, 0x09, 0x00, 0x00} /* 133MHz */
91 /* DMA transfer mode table */
93 static unsigned long JCHDCTxtbl[2][7] = {
94 {0x0A, 0x06, 0x04, 0x03, 0x01, 0x00, 0x00}, /* 100MHz */
95 {0x0E, 0x09, 0x06, 0x04, 0x02, 0x01, 0x00} /* 133MHz */
99 static unsigned long JCSTWTxtbl[2][7] = {
100 {0x06, 0x04, 0x03, 0x02, 0x02, 0x02, 0x00}, /* 100MHz */
101 {0x09, 0x06, 0x04, 0x02, 0x02, 0x02, 0x02} /* 133MHz */
105 static unsigned long JCTSStbl[2][7] = {
106 {0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x00}, /* 100MHz */
107 {0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05} /* 133MHz */
111 static unsigned long JCENVTtbl[2][7] = {
112 {0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00}, /* 100MHz */
113 {0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02} /* 133MHz */
116 /* JCACTSELS/JCACTSELM */
117 static unsigned long JCACTSELtbl[2][7] = {
118 {0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00}, /* 100MHz */
119 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01} /* 133MHz */
123 static u8 scc_ide_inb(unsigned long port)
125 u32 data = in_be32((void*)port);
129 static void scc_exec_command(ide_hwif_t *hwif, u8 cmd)
131 out_be32((void *)hwif->io_ports.command_addr, cmd);
133 in_be32((void *)(hwif->dma_base + 0x01c));
137 static u8 scc_read_status(ide_hwif_t *hwif)
139 return (u8)in_be32((void *)hwif->io_ports.status_addr);
142 static u8 scc_read_sff_dma_status(ide_hwif_t *hwif)
144 return (u8)in_be32((void *)(hwif->dma_base + 4));
147 static void scc_ide_insw(unsigned long port, void *addr, u32 count)
149 u16 *ptr = (u16 *)addr;
151 *ptr++ = le16_to_cpu(in_be32((void*)port));
155 static void scc_ide_insl(unsigned long port, void *addr, u32 count)
157 u16 *ptr = (u16 *)addr;
159 *ptr++ = le16_to_cpu(in_be32((void*)port));
160 *ptr++ = le16_to_cpu(in_be32((void*)port));
164 static void scc_ide_outb(u8 addr, unsigned long port)
166 out_be32((void*)port, addr);
169 static void scc_ide_outbsync(ide_hwif_t *hwif, u8 addr, unsigned long port)
171 out_be32((void*)port, addr);
173 in_be32((void*)(hwif->dma_base + 0x01c));
178 scc_ide_outsw(unsigned long port, void *addr, u32 count)
180 u16 *ptr = (u16 *)addr;
182 out_be32((void*)port, cpu_to_le16(*ptr++));
187 scc_ide_outsl(unsigned long port, void *addr, u32 count)
189 u16 *ptr = (u16 *)addr;
191 out_be32((void*)port, cpu_to_le16(*ptr++));
192 out_be32((void*)port, cpu_to_le16(*ptr++));
197 * scc_set_pio_mode - set host controller for PIO mode
199 * @pio: PIO mode number
201 * Load the timing settings for this device mode into the
205 static void scc_set_pio_mode(ide_drive_t *drive, const u8 pio)
207 ide_hwif_t *hwif = HWIF(drive);
208 struct scc_ports *ports = ide_get_hwifdata(hwif);
209 unsigned long ctl_base = ports->ctl;
210 unsigned long cckctrl_port = ctl_base + 0xff0;
211 unsigned long piosht_port = ctl_base + 0x000;
212 unsigned long pioct_port = ctl_base + 0x004;
216 reg = in_be32((void __iomem *)cckctrl_port);
217 if (reg & CCKCTRL_ATACLKOEN) {
218 offset = 1; /* 133MHz */
220 offset = 0; /* 100MHz */
222 reg = JCHSTtbl[offset][pio] << 16 | JCHHTtbl[offset][pio];
223 out_be32((void __iomem *)piosht_port, reg);
224 reg = JCHCTtbl[offset][pio];
225 out_be32((void __iomem *)pioct_port, reg);
229 * scc_set_dma_mode - set host controller for DMA mode
233 * Load the timing settings for this device mode into the
237 static void scc_set_dma_mode(ide_drive_t *drive, const u8 speed)
239 ide_hwif_t *hwif = HWIF(drive);
240 struct scc_ports *ports = ide_get_hwifdata(hwif);
241 unsigned long ctl_base = ports->ctl;
242 unsigned long cckctrl_port = ctl_base + 0xff0;
243 unsigned long mdmact_port = ctl_base + 0x008;
244 unsigned long mcrcst_port = ctl_base + 0x00c;
245 unsigned long sdmact_port = ctl_base + 0x010;
246 unsigned long scrcst_port = ctl_base + 0x014;
247 unsigned long udenvt_port = ctl_base + 0x018;
248 unsigned long tdvhsel_port = ctl_base + 0x020;
249 int is_slave = (&hwif->drives[1] == drive);
252 unsigned long jcactsel;
254 reg = in_be32((void __iomem *)cckctrl_port);
255 if (reg & CCKCTRL_ATACLKOEN) {
256 offset = 1; /* 133MHz */
258 offset = 0; /* 100MHz */
261 idx = speed - XFER_UDMA_0;
263 jcactsel = JCACTSELtbl[offset][idx];
265 out_be32((void __iomem *)sdmact_port, JCHDCTxtbl[offset][idx]);
266 out_be32((void __iomem *)scrcst_port, JCSTWTxtbl[offset][idx]);
267 jcactsel = jcactsel << 2;
268 out_be32((void __iomem *)tdvhsel_port, (in_be32((void __iomem *)tdvhsel_port) & ~TDVHSEL_SLAVE) | jcactsel);
270 out_be32((void __iomem *)mdmact_port, JCHDCTxtbl[offset][idx]);
271 out_be32((void __iomem *)mcrcst_port, JCSTWTxtbl[offset][idx]);
272 out_be32((void __iomem *)tdvhsel_port, (in_be32((void __iomem *)tdvhsel_port) & ~TDVHSEL_MASTER) | jcactsel);
274 reg = JCTSStbl[offset][idx] << 16 | JCENVTtbl[offset][idx];
275 out_be32((void __iomem *)udenvt_port, reg);
278 static void scc_dma_host_set(ide_drive_t *drive, int on)
280 ide_hwif_t *hwif = drive->hwif;
281 u8 unit = (drive->select.b.unit & 0x01);
282 u8 dma_stat = scc_ide_inb(hwif->dma_base + 4);
285 dma_stat |= (1 << (5 + unit));
287 dma_stat &= ~(1 << (5 + unit));
289 scc_ide_outb(dma_stat, hwif->dma_base + 4);
293 * scc_ide_dma_setup - begin a DMA phase
294 * @drive: target device
296 * Build an IDE DMA PRD (IDE speak for scatter gather table)
297 * and then set up the DMA transfer registers.
299 * Returns 0 on success. If a PIO fallback is required then 1
303 static int scc_dma_setup(ide_drive_t *drive)
305 ide_hwif_t *hwif = drive->hwif;
306 struct request *rq = HWGROUP(drive)->rq;
307 unsigned int reading;
315 /* fall back to pio! */
316 if (!ide_build_dmatable(drive, rq)) {
317 ide_map_sg(drive, rq);
322 out_be32((void __iomem *)(hwif->dma_base + 8), hwif->dmatable_dma);
325 out_be32((void __iomem *)hwif->dma_base, reading);
327 /* read DMA status for INTR & ERROR flags */
328 dma_stat = in_be32((void __iomem *)(hwif->dma_base + 4));
330 /* clear INTR & ERROR flags */
331 out_be32((void __iomem *)(hwif->dma_base + 4), dma_stat | 6);
332 drive->waiting_for_dma = 1;
336 static void scc_dma_start(ide_drive_t *drive)
338 ide_hwif_t *hwif = drive->hwif;
339 u8 dma_cmd = scc_ide_inb(hwif->dma_base);
342 scc_ide_outb(dma_cmd | 1, hwif->dma_base);
347 static int __scc_dma_end(ide_drive_t *drive)
349 ide_hwif_t *hwif = drive->hwif;
350 u8 dma_stat, dma_cmd;
352 drive->waiting_for_dma = 0;
353 /* get DMA command mode */
354 dma_cmd = scc_ide_inb(hwif->dma_base);
356 scc_ide_outb(dma_cmd & ~1, hwif->dma_base);
358 dma_stat = scc_ide_inb(hwif->dma_base + 4);
359 /* clear the INTR & ERROR bits */
360 scc_ide_outb(dma_stat | 6, hwif->dma_base + 4);
361 /* purge DMA mappings */
362 ide_destroy_dmatable(drive);
363 /* verify good DMA status */
366 return (dma_stat & 7) != 4 ? (0x10 | dma_stat) : 0;
370 * scc_dma_end - Stop DMA
373 * Check and clear INT Status register.
374 * Then call __scc_dma_end().
377 static int scc_dma_end(ide_drive_t *drive)
379 ide_hwif_t *hwif = HWIF(drive);
380 void __iomem *dma_base = (void __iomem *)hwif->dma_base;
381 unsigned long intsts_port = hwif->dma_base + 0x014;
383 int dma_stat, data_loss = 0;
384 static int retry = 0;
386 /* errata A308 workaround: Step5 (check data loss) */
387 /* We don't check non ide_disk because it is limited to UDMA4 */
388 if (!(in_be32((void __iomem *)hwif->io_ports.ctl_addr)
390 drive->media == ide_disk && drive->current_speed > XFER_UDMA_4) {
391 reg = in_be32((void __iomem *)intsts_port);
392 if (!(reg & INTSTS_ACTEINT)) {
393 printk(KERN_WARNING "%s: operation failed (transfer data loss)\n",
397 struct request *rq = HWGROUP(drive)->rq;
399 /* ERROR_RESET and drive->crc_count are needed
400 * to reduce DMA transfer mode in retry process.
403 rq->errors |= ERROR_RESET;
404 for (unit = 0; unit < MAX_DRIVES; unit++) {
405 ide_drive_t *drive = &hwif->drives[unit];
413 reg = in_be32((void __iomem *)intsts_port);
415 if (reg & INTSTS_SERROR) {
416 printk(KERN_WARNING "%s: SERROR\n", SCC_PATA_NAME);
417 out_be32((void __iomem *)intsts_port, INTSTS_SERROR|INTSTS_BMSINT);
419 out_be32(dma_base, in_be32(dma_base) & ~QCHCD_IOS_SS);
423 if (reg & INTSTS_PRERR) {
425 unsigned long ctl_base = hwif->config_data;
427 maea0 = in_be32((void __iomem *)(ctl_base + 0xF50));
428 maec0 = in_be32((void __iomem *)(ctl_base + 0xF54));
430 printk(KERN_WARNING "%s: PRERR [addr:%x cmd:%x]\n", SCC_PATA_NAME, maea0, maec0);
432 out_be32((void __iomem *)intsts_port, INTSTS_PRERR|INTSTS_BMSINT);
434 out_be32(dma_base, in_be32(dma_base) & ~QCHCD_IOS_SS);
438 if (reg & INTSTS_RERR) {
439 printk(KERN_WARNING "%s: Response Error\n", SCC_PATA_NAME);
440 out_be32((void __iomem *)intsts_port, INTSTS_RERR|INTSTS_BMSINT);
442 out_be32(dma_base, in_be32(dma_base) & ~QCHCD_IOS_SS);
446 if (reg & INTSTS_ICERR) {
447 out_be32(dma_base, in_be32(dma_base) & ~QCHCD_IOS_SS);
449 printk(KERN_WARNING "%s: Illegal Configuration\n", SCC_PATA_NAME);
450 out_be32((void __iomem *)intsts_port, INTSTS_ICERR|INTSTS_BMSINT);
454 if (reg & INTSTS_BMSINT) {
455 printk(KERN_WARNING "%s: Internal Bus Error\n", SCC_PATA_NAME);
456 out_be32((void __iomem *)intsts_port, INTSTS_BMSINT);
462 if (reg & INTSTS_BMHE) {
463 out_be32((void __iomem *)intsts_port, INTSTS_BMHE);
467 if (reg & INTSTS_ACTEINT) {
468 out_be32((void __iomem *)intsts_port, INTSTS_ACTEINT);
472 if (reg & INTSTS_IOIRQS) {
473 out_be32((void __iomem *)intsts_port, INTSTS_IOIRQS);
479 dma_stat = __scc_dma_end(drive);
481 dma_stat |= 2; /* emulate DMA error (to retry command) */
485 /* returns 1 if dma irq issued, 0 otherwise */
486 static int scc_dma_test_irq(ide_drive_t *drive)
488 ide_hwif_t *hwif = HWIF(drive);
489 u32 int_stat = in_be32((void __iomem *)hwif->dma_base + 0x014);
491 /* SCC errata A252,A308 workaround: Step4 */
492 if ((in_be32((void __iomem *)hwif->io_ports.ctl_addr)
494 (int_stat & INTSTS_INTRQ))
497 /* SCC errata A308 workaround: Step5 (polling IOIRQS) */
498 if (int_stat & INTSTS_IOIRQS)
501 if (!drive->waiting_for_dma)
502 printk(KERN_WARNING "%s: (%s) called while not waiting\n",
503 drive->name, __func__);
507 static u8 scc_udma_filter(ide_drive_t *drive)
509 ide_hwif_t *hwif = drive->hwif;
510 u8 mask = hwif->ultra_mask;
512 /* errata A308 workaround: limit non ide_disk drive to UDMA4 */
513 if ((drive->media != ide_disk) && (mask & 0xE0)) {
514 printk(KERN_INFO "%s: limit %s to UDMA4\n",
515 SCC_PATA_NAME, drive->name);
523 * setup_mmio_scc - map CTRL/BMID region
524 * @dev: PCI device we are configuring
529 static int setup_mmio_scc (struct pci_dev *dev, const char *name)
531 unsigned long ctl_base = pci_resource_start(dev, 0);
532 unsigned long dma_base = pci_resource_start(dev, 1);
533 unsigned long ctl_size = pci_resource_len(dev, 0);
534 unsigned long dma_size = pci_resource_len(dev, 1);
535 void __iomem *ctl_addr;
536 void __iomem *dma_addr;
539 for (i = 0; i < MAX_HWIFS; i++) {
540 if (scc_ports[i].ctl == 0)
546 ret = pci_request_selected_regions(dev, (1 << 2) - 1, name);
548 printk(KERN_ERR "%s: can't reserve resources\n", name);
552 if ((ctl_addr = ioremap(ctl_base, ctl_size)) == NULL)
555 if ((dma_addr = ioremap(dma_base, dma_size)) == NULL)
559 scc_ports[i].ctl = (unsigned long)ctl_addr;
560 scc_ports[i].dma = (unsigned long)dma_addr;
561 pci_set_drvdata(dev, (void *) &scc_ports[i]);
571 static int scc_ide_setup_pci_device(struct pci_dev *dev,
572 const struct ide_port_info *d)
574 struct scc_ports *ports = pci_get_drvdata(dev);
575 ide_hwif_t *hwif = NULL;
576 hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
577 u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
580 hwif = ide_find_port_slot(d);
584 memset(&hw, 0, sizeof(hw));
585 for (i = 0; i <= 8; i++)
586 hw.io_ports_array[i] = ports->dma + 0x20 + i * 4;
589 hw.chipset = ide_pci;
591 idx[0] = hwif->index;
593 ide_device_add(idx, d, hws);
599 * init_setup_scc - set up an SCC PATA Controller
603 * Perform the initial set up for this device.
606 static int __devinit init_setup_scc(struct pci_dev *dev,
607 const struct ide_port_info *d)
609 unsigned long ctl_base;
610 unsigned long dma_base;
611 unsigned long cckctrl_port;
612 unsigned long intmask_port;
613 unsigned long mode_port;
614 unsigned long ecmode_port;
615 unsigned long dma_status_port;
617 struct scc_ports *ports;
620 rc = pci_enable_device(dev);
624 rc = setup_mmio_scc(dev, d->name);
628 ports = pci_get_drvdata(dev);
629 ctl_base = ports->ctl;
630 dma_base = ports->dma;
631 cckctrl_port = ctl_base + 0xff0;
632 intmask_port = dma_base + 0x010;
633 mode_port = ctl_base + 0x024;
634 ecmode_port = ctl_base + 0xf00;
635 dma_status_port = dma_base + 0x004;
637 /* controller initialization */
639 out_be32((void*)cckctrl_port, reg);
640 reg |= CCKCTRL_ATACLKOEN;
641 out_be32((void*)cckctrl_port, reg);
642 reg |= CCKCTRL_LCLKEN | CCKCTRL_OCLKEN;
643 out_be32((void*)cckctrl_port, reg);
645 out_be32((void*)cckctrl_port, reg);
648 reg = in_be32((void*)cckctrl_port);
649 if (reg & CCKCTRL_CRST)
654 reg |= CCKCTRL_ATARESET;
655 out_be32((void*)cckctrl_port, reg);
657 out_be32((void*)ecmode_port, ECMODE_VALUE);
658 out_be32((void*)mode_port, MODE_JCUSFEN);
659 out_be32((void*)intmask_port, INTMASK_MSK);
661 rc = scc_ide_setup_pci_device(dev, d);
667 static void scc_tf_load(ide_drive_t *drive, ide_task_t *task)
669 struct ide_io_ports *io_ports = &drive->hwif->io_ports;
670 struct ide_taskfile *tf = &task->tf;
671 u8 HIHI = (task->tf_flags & IDE_TFLAG_LBA48) ? 0xE0 : 0xEF;
673 if (task->tf_flags & IDE_TFLAG_FLAGGED)
676 if (task->tf_flags & IDE_TFLAG_OUT_DATA)
677 out_be32((void *)io_ports->data_addr,
678 (tf->hob_data << 8) | tf->data);
680 if (task->tf_flags & IDE_TFLAG_OUT_HOB_FEATURE)
681 scc_ide_outb(tf->hob_feature, io_ports->feature_addr);
682 if (task->tf_flags & IDE_TFLAG_OUT_HOB_NSECT)
683 scc_ide_outb(tf->hob_nsect, io_ports->nsect_addr);
684 if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAL)
685 scc_ide_outb(tf->hob_lbal, io_ports->lbal_addr);
686 if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAM)
687 scc_ide_outb(tf->hob_lbam, io_ports->lbam_addr);
688 if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAH)
689 scc_ide_outb(tf->hob_lbah, io_ports->lbah_addr);
691 if (task->tf_flags & IDE_TFLAG_OUT_FEATURE)
692 scc_ide_outb(tf->feature, io_ports->feature_addr);
693 if (task->tf_flags & IDE_TFLAG_OUT_NSECT)
694 scc_ide_outb(tf->nsect, io_ports->nsect_addr);
695 if (task->tf_flags & IDE_TFLAG_OUT_LBAL)
696 scc_ide_outb(tf->lbal, io_ports->lbal_addr);
697 if (task->tf_flags & IDE_TFLAG_OUT_LBAM)
698 scc_ide_outb(tf->lbam, io_ports->lbam_addr);
699 if (task->tf_flags & IDE_TFLAG_OUT_LBAH)
700 scc_ide_outb(tf->lbah, io_ports->lbah_addr);
702 if (task->tf_flags & IDE_TFLAG_OUT_DEVICE)
703 scc_ide_outb((tf->device & HIHI) | drive->select.all,
704 io_ports->device_addr);
707 static void scc_tf_read(ide_drive_t *drive, ide_task_t *task)
709 struct ide_io_ports *io_ports = &drive->hwif->io_ports;
710 struct ide_taskfile *tf = &task->tf;
712 if (task->tf_flags & IDE_TFLAG_IN_DATA) {
713 u16 data = (u16)in_be32((void *)io_ports->data_addr);
715 tf->data = data & 0xff;
716 tf->hob_data = (data >> 8) & 0xff;
719 /* be sure we're looking at the low order bits */
720 scc_ide_outb(ATA_DEVCTL_OBS & ~0x80, io_ports->ctl_addr);
722 if (task->tf_flags & IDE_TFLAG_IN_NSECT)
723 tf->nsect = scc_ide_inb(io_ports->nsect_addr);
724 if (task->tf_flags & IDE_TFLAG_IN_LBAL)
725 tf->lbal = scc_ide_inb(io_ports->lbal_addr);
726 if (task->tf_flags & IDE_TFLAG_IN_LBAM)
727 tf->lbam = scc_ide_inb(io_ports->lbam_addr);
728 if (task->tf_flags & IDE_TFLAG_IN_LBAH)
729 tf->lbah = scc_ide_inb(io_ports->lbah_addr);
730 if (task->tf_flags & IDE_TFLAG_IN_DEVICE)
731 tf->device = scc_ide_inb(io_ports->device_addr);
733 if (task->tf_flags & IDE_TFLAG_LBA48) {
734 scc_ide_outb(ATA_DEVCTL_OBS | 0x80, io_ports->ctl_addr);
736 if (task->tf_flags & IDE_TFLAG_IN_HOB_FEATURE)
737 tf->hob_feature = scc_ide_inb(io_ports->feature_addr);
738 if (task->tf_flags & IDE_TFLAG_IN_HOB_NSECT)
739 tf->hob_nsect = scc_ide_inb(io_ports->nsect_addr);
740 if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAL)
741 tf->hob_lbal = scc_ide_inb(io_ports->lbal_addr);
742 if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAM)
743 tf->hob_lbam = scc_ide_inb(io_ports->lbam_addr);
744 if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAH)
745 tf->hob_lbah = scc_ide_inb(io_ports->lbah_addr);
749 static void scc_input_data(ide_drive_t *drive, struct request *rq,
750 void *buf, unsigned int len)
752 unsigned long data_addr = drive->hwif->io_ports.data_addr;
756 if (drive->io_32bit) {
757 scc_ide_insl(data_addr, buf, len / 4);
760 scc_ide_insw(data_addr, (u8 *)buf + (len & ~3), 1);
762 scc_ide_insw(data_addr, buf, len / 2);
765 static void scc_output_data(ide_drive_t *drive, struct request *rq,
766 void *buf, unsigned int len)
768 unsigned long data_addr = drive->hwif->io_ports.data_addr;
772 if (drive->io_32bit) {
773 scc_ide_outsl(data_addr, buf, len / 4);
776 scc_ide_outsw(data_addr, (u8 *)buf + (len & ~3), 1);
778 scc_ide_outsw(data_addr, buf, len / 2);
782 * init_mmio_iops_scc - set up the iops for MMIO
783 * @hwif: interface to set up
787 static void __devinit init_mmio_iops_scc(ide_hwif_t *hwif)
789 struct pci_dev *dev = to_pci_dev(hwif->dev);
790 struct scc_ports *ports = pci_get_drvdata(dev);
791 unsigned long dma_base = ports->dma;
793 ide_set_hwifdata(hwif, ports);
795 hwif->exec_command = scc_exec_command;
796 hwif->read_status = scc_read_status;
797 hwif->read_sff_dma_status = scc_read_sff_dma_status;
799 hwif->tf_load = scc_tf_load;
800 hwif->tf_read = scc_tf_read;
802 hwif->input_data = scc_input_data;
803 hwif->output_data = scc_output_data;
805 hwif->INB = scc_ide_inb;
806 hwif->OUTB = scc_ide_outb;
807 hwif->OUTBSYNC = scc_ide_outbsync;
809 hwif->dma_base = dma_base;
810 hwif->config_data = ports->ctl;
814 * init_iops_scc - set up iops
815 * @hwif: interface to set up
817 * Do the basic setup for the SCC hardware interface
818 * and then do the MMIO setup.
821 static void __devinit init_iops_scc(ide_hwif_t *hwif)
823 struct pci_dev *dev = to_pci_dev(hwif->dev);
825 hwif->hwif_data = NULL;
826 if (pci_get_drvdata(dev) == NULL)
828 init_mmio_iops_scc(hwif);
831 static u8 __devinit scc_cable_detect(ide_hwif_t *hwif)
833 return ATA_CBL_PATA80;
837 * init_hwif_scc - set up hwif
838 * @hwif: interface to set up
840 * We do the basic set up of the interface structure. The SCC
841 * requires several custom handlers so we override the default
842 * ide DMA handlers appropriately.
845 static void __devinit init_hwif_scc(ide_hwif_t *hwif)
847 struct scc_ports *ports = ide_get_hwifdata(hwif);
852 out_be32((void __iomem *)(hwif->dma_base + 0x018), hwif->dmatable_dma);
854 if (in_be32((void __iomem *)(hwif->config_data + 0xff0)) & CCKCTRL_ATACLKOEN)
855 hwif->ultra_mask = ATA_UDMA6; /* 133MHz */
857 hwif->ultra_mask = ATA_UDMA5; /* 100MHz */
860 static const struct ide_port_ops scc_port_ops = {
861 .set_pio_mode = scc_set_pio_mode,
862 .set_dma_mode = scc_set_dma_mode,
863 .udma_filter = scc_udma_filter,
864 .cable_detect = scc_cable_detect,
867 static const struct ide_dma_ops scc_dma_ops = {
868 .dma_host_set = scc_dma_host_set,
869 .dma_setup = scc_dma_setup,
870 .dma_exec_cmd = ide_dma_exec_cmd,
871 .dma_start = scc_dma_start,
872 .dma_end = scc_dma_end,
873 .dma_test_irq = scc_dma_test_irq,
874 .dma_lost_irq = ide_dma_lost_irq,
875 .dma_timeout = ide_dma_timeout,
878 #define DECLARE_SCC_DEV(name_str) \
881 .init_iops = init_iops_scc, \
882 .init_hwif = init_hwif_scc, \
883 .port_ops = &scc_port_ops, \
884 .dma_ops = &scc_dma_ops, \
885 .host_flags = IDE_HFLAG_SINGLE, \
886 .pio_mask = ATA_PIO4, \
889 static const struct ide_port_info scc_chipsets[] __devinitdata = {
890 /* 0 */ DECLARE_SCC_DEV("sccIDE"),
894 * scc_init_one - pci layer discovery entry
896 * @id: ident table entry
898 * Called by the PCI code when it finds an SCC PATA controller.
899 * We then use the IDE PCI generic helper to do most of the work.
902 static int __devinit scc_init_one(struct pci_dev *dev, const struct pci_device_id *id)
904 return init_setup_scc(dev, &scc_chipsets[id->driver_data]);
908 * scc_remove - pci layer remove entry
911 * Called by the PCI code when it removes an SCC PATA controller.
914 static void __devexit scc_remove(struct pci_dev *dev)
916 struct scc_ports *ports = pci_get_drvdata(dev);
917 ide_hwif_t *hwif = ports->hwif;
919 if (hwif->dmatable_cpu) {
920 pci_free_consistent(dev, PRD_ENTRIES * PRD_BYTES,
921 hwif->dmatable_cpu, hwif->dmatable_dma);
922 hwif->dmatable_cpu = NULL;
925 ide_unregister(hwif);
927 iounmap((void*)ports->dma);
928 iounmap((void*)ports->ctl);
929 pci_release_selected_regions(dev, (1 << 2) - 1);
930 memset(ports, 0, sizeof(*ports));
933 static const struct pci_device_id scc_pci_tbl[] = {
934 { PCI_VDEVICE(TOSHIBA_2, PCI_DEVICE_ID_TOSHIBA_SCC_ATA), 0 },
937 MODULE_DEVICE_TABLE(pci, scc_pci_tbl);
939 static struct pci_driver driver = {
941 .id_table = scc_pci_tbl,
942 .probe = scc_init_one,
943 .remove = scc_remove,
946 static int scc_ide_init(void)
948 return ide_pci_register_driver(&driver);
951 module_init(scc_ide_init);
953 static void scc_ide_exit(void)
955 ide_pci_unregister_driver(&driver);
957 module_exit(scc_ide_exit);
961 MODULE_DESCRIPTION("PCI driver module for Toshiba SCC IDE");
962 MODULE_LICENSE("GPL");