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
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/ide.h>
30 #include <linux/init.h>
32 #define PCI_DEVICE_ID_TOSHIBA_SCC_ATA 0x01b4
34 #define SCC_PATA_NAME "scc IDE"
36 #define TDVHSEL_MASTER 0x00000001
37 #define TDVHSEL_SLAVE 0x00000004
39 #define MODE_JCUSFEN 0x00000080
41 #define CCKCTRL_ATARESET 0x00040000
42 #define CCKCTRL_BUFCNT 0x00020000
43 #define CCKCTRL_CRST 0x00010000
44 #define CCKCTRL_OCLKEN 0x00000100
45 #define CCKCTRL_ATACLKOEN 0x00000002
46 #define CCKCTRL_LCLKEN 0x00000001
48 #define QCHCD_IOS_SS 0x00000001
50 #define QCHSD_STPDIAG 0x00020000
52 #define INTMASK_MSK 0xD1000012
53 #define INTSTS_SERROR 0x80000000
54 #define INTSTS_PRERR 0x40000000
55 #define INTSTS_RERR 0x10000000
56 #define INTSTS_ICERR 0x01000000
57 #define INTSTS_BMSINT 0x00000010
58 #define INTSTS_BMHE 0x00000008
59 #define INTSTS_IOIRQS 0x00000004
60 #define INTSTS_INTRQ 0x00000002
61 #define INTSTS_ACTEINT 0x00000001
63 #define ECMODE_VALUE 0x01
65 static struct scc_ports {
66 unsigned long ctl, dma;
67 struct ide_host *host; /* for removing port from system */
68 } scc_ports[MAX_HWIFS];
70 /* PIO transfer mode table */
72 static unsigned long JCHSTtbl[2][7] = {
73 {0x0E, 0x05, 0x02, 0x03, 0x02, 0x00, 0x00}, /* 100MHz */
74 {0x13, 0x07, 0x04, 0x04, 0x03, 0x00, 0x00} /* 133MHz */
78 static unsigned long JCHHTtbl[2][7] = {
79 {0x0E, 0x02, 0x02, 0x02, 0x02, 0x00, 0x00}, /* 100MHz */
80 {0x13, 0x03, 0x03, 0x03, 0x03, 0x00, 0x00} /* 133MHz */
84 static unsigned long JCHCTtbl[2][7] = {
85 {0x1D, 0x1D, 0x1C, 0x0B, 0x06, 0x00, 0x00}, /* 100MHz */
86 {0x27, 0x26, 0x26, 0x0E, 0x09, 0x00, 0x00} /* 133MHz */
90 /* DMA transfer mode table */
92 static unsigned long JCHDCTxtbl[2][7] = {
93 {0x0A, 0x06, 0x04, 0x03, 0x01, 0x00, 0x00}, /* 100MHz */
94 {0x0E, 0x09, 0x06, 0x04, 0x02, 0x01, 0x00} /* 133MHz */
98 static unsigned long JCSTWTxtbl[2][7] = {
99 {0x06, 0x04, 0x03, 0x02, 0x02, 0x02, 0x00}, /* 100MHz */
100 {0x09, 0x06, 0x04, 0x02, 0x02, 0x02, 0x02} /* 133MHz */
104 static unsigned long JCTSStbl[2][7] = {
105 {0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x00}, /* 100MHz */
106 {0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05} /* 133MHz */
110 static unsigned long JCENVTtbl[2][7] = {
111 {0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00}, /* 100MHz */
112 {0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02} /* 133MHz */
115 /* JCACTSELS/JCACTSELM */
116 static unsigned long JCACTSELtbl[2][7] = {
117 {0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00}, /* 100MHz */
118 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01} /* 133MHz */
122 static u8 scc_ide_inb(unsigned long port)
124 u32 data = in_be32((void*)port);
128 static void scc_exec_command(ide_hwif_t *hwif, u8 cmd)
130 out_be32((void *)hwif->io_ports.command_addr, cmd);
132 in_be32((void *)(hwif->dma_base + 0x01c));
136 static u8 scc_read_status(ide_hwif_t *hwif)
138 return (u8)in_be32((void *)hwif->io_ports.status_addr);
141 static u8 scc_read_altstatus(ide_hwif_t *hwif)
143 return (u8)in_be32((void *)hwif->io_ports.ctl_addr);
146 static u8 scc_read_sff_dma_status(ide_hwif_t *hwif)
148 return (u8)in_be32((void *)(hwif->dma_base + 4));
151 static void scc_set_irq(ide_hwif_t *hwif, int on)
153 u8 ctl = ATA_DEVCTL_OBS;
155 if (on == 4) { /* hack for SRST */
162 out_be32((void *)hwif->io_ports.ctl_addr, ctl);
164 in_be32((void *)(hwif->dma_base + 0x01c));
168 static void scc_ide_insw(unsigned long port, void *addr, u32 count)
170 u16 *ptr = (u16 *)addr;
172 *ptr++ = le16_to_cpu(in_be32((void*)port));
176 static void scc_ide_insl(unsigned long port, void *addr, u32 count)
178 u16 *ptr = (u16 *)addr;
180 *ptr++ = le16_to_cpu(in_be32((void*)port));
181 *ptr++ = le16_to_cpu(in_be32((void*)port));
185 static void scc_ide_outb(u8 addr, unsigned long port)
187 out_be32((void*)port, addr);
191 scc_ide_outsw(unsigned long port, void *addr, u32 count)
193 u16 *ptr = (u16 *)addr;
195 out_be32((void*)port, cpu_to_le16(*ptr++));
200 scc_ide_outsl(unsigned long port, void *addr, u32 count)
202 u16 *ptr = (u16 *)addr;
204 out_be32((void*)port, cpu_to_le16(*ptr++));
205 out_be32((void*)port, cpu_to_le16(*ptr++));
210 * scc_set_pio_mode - set host controller for PIO mode
212 * @pio: PIO mode number
214 * Load the timing settings for this device mode into the
218 static void scc_set_pio_mode(ide_drive_t *drive, const u8 pio)
220 ide_hwif_t *hwif = drive->hwif;
221 struct scc_ports *ports = ide_get_hwifdata(hwif);
222 unsigned long ctl_base = ports->ctl;
223 unsigned long cckctrl_port = ctl_base + 0xff0;
224 unsigned long piosht_port = ctl_base + 0x000;
225 unsigned long pioct_port = ctl_base + 0x004;
229 reg = in_be32((void __iomem *)cckctrl_port);
230 if (reg & CCKCTRL_ATACLKOEN) {
231 offset = 1; /* 133MHz */
233 offset = 0; /* 100MHz */
235 reg = JCHSTtbl[offset][pio] << 16 | JCHHTtbl[offset][pio];
236 out_be32((void __iomem *)piosht_port, reg);
237 reg = JCHCTtbl[offset][pio];
238 out_be32((void __iomem *)pioct_port, reg);
242 * scc_set_dma_mode - set host controller for DMA mode
246 * Load the timing settings for this device mode into the
250 static void scc_set_dma_mode(ide_drive_t *drive, const u8 speed)
252 ide_hwif_t *hwif = drive->hwif;
253 struct scc_ports *ports = ide_get_hwifdata(hwif);
254 unsigned long ctl_base = ports->ctl;
255 unsigned long cckctrl_port = ctl_base + 0xff0;
256 unsigned long mdmact_port = ctl_base + 0x008;
257 unsigned long mcrcst_port = ctl_base + 0x00c;
258 unsigned long sdmact_port = ctl_base + 0x010;
259 unsigned long scrcst_port = ctl_base + 0x014;
260 unsigned long udenvt_port = ctl_base + 0x018;
261 unsigned long tdvhsel_port = ctl_base + 0x020;
262 int is_slave = drive->dn & 1;
265 unsigned long jcactsel;
267 reg = in_be32((void __iomem *)cckctrl_port);
268 if (reg & CCKCTRL_ATACLKOEN) {
269 offset = 1; /* 133MHz */
271 offset = 0; /* 100MHz */
274 idx = speed - XFER_UDMA_0;
276 jcactsel = JCACTSELtbl[offset][idx];
278 out_be32((void __iomem *)sdmact_port, JCHDCTxtbl[offset][idx]);
279 out_be32((void __iomem *)scrcst_port, JCSTWTxtbl[offset][idx]);
280 jcactsel = jcactsel << 2;
281 out_be32((void __iomem *)tdvhsel_port, (in_be32((void __iomem *)tdvhsel_port) & ~TDVHSEL_SLAVE) | jcactsel);
283 out_be32((void __iomem *)mdmact_port, JCHDCTxtbl[offset][idx]);
284 out_be32((void __iomem *)mcrcst_port, JCSTWTxtbl[offset][idx]);
285 out_be32((void __iomem *)tdvhsel_port, (in_be32((void __iomem *)tdvhsel_port) & ~TDVHSEL_MASTER) | jcactsel);
287 reg = JCTSStbl[offset][idx] << 16 | JCENVTtbl[offset][idx];
288 out_be32((void __iomem *)udenvt_port, reg);
291 static void scc_dma_host_set(ide_drive_t *drive, int on)
293 ide_hwif_t *hwif = drive->hwif;
294 u8 unit = drive->dn & 1;
295 u8 dma_stat = scc_ide_inb(hwif->dma_base + 4);
298 dma_stat |= (1 << (5 + unit));
300 dma_stat &= ~(1 << (5 + unit));
302 scc_ide_outb(dma_stat, hwif->dma_base + 4);
306 * scc_ide_dma_setup - begin a DMA phase
307 * @drive: target device
309 * Build an IDE DMA PRD (IDE speak for scatter gather table)
310 * and then set up the DMA transfer registers.
312 * Returns 0 on success. If a PIO fallback is required then 1
316 static int scc_dma_setup(ide_drive_t *drive)
318 ide_hwif_t *hwif = drive->hwif;
319 struct request *rq = hwif->rq;
320 unsigned int reading;
328 /* fall back to pio! */
329 if (!ide_build_dmatable(drive, rq)) {
330 ide_map_sg(drive, rq);
335 out_be32((void __iomem *)(hwif->dma_base + 8), hwif->dmatable_dma);
338 out_be32((void __iomem *)hwif->dma_base, reading);
340 /* read DMA status for INTR & ERROR flags */
341 dma_stat = in_be32((void __iomem *)(hwif->dma_base + 4));
343 /* clear INTR & ERROR flags */
344 out_be32((void __iomem *)(hwif->dma_base + 4), dma_stat | 6);
345 drive->waiting_for_dma = 1;
349 static void scc_dma_start(ide_drive_t *drive)
351 ide_hwif_t *hwif = drive->hwif;
352 u8 dma_cmd = scc_ide_inb(hwif->dma_base);
355 scc_ide_outb(dma_cmd | 1, hwif->dma_base);
359 static int __scc_dma_end(ide_drive_t *drive)
361 ide_hwif_t *hwif = drive->hwif;
362 u8 dma_stat, dma_cmd;
364 drive->waiting_for_dma = 0;
365 /* get DMA command mode */
366 dma_cmd = scc_ide_inb(hwif->dma_base);
368 scc_ide_outb(dma_cmd & ~1, hwif->dma_base);
370 dma_stat = scc_ide_inb(hwif->dma_base + 4);
371 /* clear the INTR & ERROR bits */
372 scc_ide_outb(dma_stat | 6, hwif->dma_base + 4);
373 /* purge DMA mappings */
374 ide_destroy_dmatable(drive);
375 /* verify good DMA status */
377 return (dma_stat & 7) != 4 ? (0x10 | dma_stat) : 0;
381 * scc_dma_end - Stop DMA
384 * Check and clear INT Status register.
385 * Then call __scc_dma_end().
388 static int scc_dma_end(ide_drive_t *drive)
390 ide_hwif_t *hwif = drive->hwif;
391 void __iomem *dma_base = (void __iomem *)hwif->dma_base;
392 unsigned long intsts_port = hwif->dma_base + 0x014;
394 int dma_stat, data_loss = 0;
395 static int retry = 0;
397 /* errata A308 workaround: Step5 (check data loss) */
398 /* We don't check non ide_disk because it is limited to UDMA4 */
399 if (!(in_be32((void __iomem *)hwif->io_ports.ctl_addr)
401 drive->media == ide_disk && drive->current_speed > XFER_UDMA_4) {
402 reg = in_be32((void __iomem *)intsts_port);
403 if (!(reg & INTSTS_ACTEINT)) {
404 printk(KERN_WARNING "%s: operation failed (transfer data loss)\n",
408 struct request *rq = hwif->rq;
412 /* ERROR_RESET and drive->crc_count are needed
413 * to reduce DMA transfer mode in retry process.
416 rq->errors |= ERROR_RESET;
418 ide_port_for_each_dev(i, drive, hwif)
425 reg = in_be32((void __iomem *)intsts_port);
427 if (reg & INTSTS_SERROR) {
428 printk(KERN_WARNING "%s: SERROR\n", SCC_PATA_NAME);
429 out_be32((void __iomem *)intsts_port, INTSTS_SERROR|INTSTS_BMSINT);
431 out_be32(dma_base, in_be32(dma_base) & ~QCHCD_IOS_SS);
435 if (reg & INTSTS_PRERR) {
437 unsigned long ctl_base = hwif->config_data;
439 maea0 = in_be32((void __iomem *)(ctl_base + 0xF50));
440 maec0 = in_be32((void __iomem *)(ctl_base + 0xF54));
442 printk(KERN_WARNING "%s: PRERR [addr:%x cmd:%x]\n", SCC_PATA_NAME, maea0, maec0);
444 out_be32((void __iomem *)intsts_port, INTSTS_PRERR|INTSTS_BMSINT);
446 out_be32(dma_base, in_be32(dma_base) & ~QCHCD_IOS_SS);
450 if (reg & INTSTS_RERR) {
451 printk(KERN_WARNING "%s: Response Error\n", SCC_PATA_NAME);
452 out_be32((void __iomem *)intsts_port, INTSTS_RERR|INTSTS_BMSINT);
454 out_be32(dma_base, in_be32(dma_base) & ~QCHCD_IOS_SS);
458 if (reg & INTSTS_ICERR) {
459 out_be32(dma_base, in_be32(dma_base) & ~QCHCD_IOS_SS);
461 printk(KERN_WARNING "%s: Illegal Configuration\n", SCC_PATA_NAME);
462 out_be32((void __iomem *)intsts_port, INTSTS_ICERR|INTSTS_BMSINT);
466 if (reg & INTSTS_BMSINT) {
467 printk(KERN_WARNING "%s: Internal Bus Error\n", SCC_PATA_NAME);
468 out_be32((void __iomem *)intsts_port, INTSTS_BMSINT);
474 if (reg & INTSTS_BMHE) {
475 out_be32((void __iomem *)intsts_port, INTSTS_BMHE);
479 if (reg & INTSTS_ACTEINT) {
480 out_be32((void __iomem *)intsts_port, INTSTS_ACTEINT);
484 if (reg & INTSTS_IOIRQS) {
485 out_be32((void __iomem *)intsts_port, INTSTS_IOIRQS);
491 dma_stat = __scc_dma_end(drive);
493 dma_stat |= 2; /* emulate DMA error (to retry command) */
497 /* returns 1 if dma irq issued, 0 otherwise */
498 static int scc_dma_test_irq(ide_drive_t *drive)
500 ide_hwif_t *hwif = drive->hwif;
501 u32 int_stat = in_be32((void __iomem *)hwif->dma_base + 0x014);
503 /* SCC errata A252,A308 workaround: Step4 */
504 if ((in_be32((void __iomem *)hwif->io_ports.ctl_addr)
506 (int_stat & INTSTS_INTRQ))
509 /* SCC errata A308 workaround: Step5 (polling IOIRQS) */
510 if (int_stat & INTSTS_IOIRQS)
516 static u8 scc_udma_filter(ide_drive_t *drive)
518 ide_hwif_t *hwif = drive->hwif;
519 u8 mask = hwif->ultra_mask;
521 /* errata A308 workaround: limit non ide_disk drive to UDMA4 */
522 if ((drive->media != ide_disk) && (mask & 0xE0)) {
523 printk(KERN_INFO "%s: limit %s to UDMA4\n",
524 SCC_PATA_NAME, drive->name);
532 * setup_mmio_scc - map CTRL/BMID region
533 * @dev: PCI device we are configuring
538 static int setup_mmio_scc (struct pci_dev *dev, const char *name)
540 void __iomem *ctl_addr;
541 void __iomem *dma_addr;
544 for (i = 0; i < MAX_HWIFS; i++) {
545 if (scc_ports[i].ctl == 0)
551 ret = pci_request_selected_regions(dev, (1 << 2) - 1, name);
553 printk(KERN_ERR "%s: can't reserve resources\n", name);
557 ctl_addr = pci_ioremap_bar(dev, 0);
561 dma_addr = pci_ioremap_bar(dev, 1);
566 scc_ports[i].ctl = (unsigned long)ctl_addr;
567 scc_ports[i].dma = (unsigned long)dma_addr;
568 pci_set_drvdata(dev, (void *) &scc_ports[i]);
578 static int scc_ide_setup_pci_device(struct pci_dev *dev,
579 const struct ide_port_info *d)
581 struct scc_ports *ports = pci_get_drvdata(dev);
582 struct ide_host *host;
583 hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
586 memset(&hw, 0, sizeof(hw));
587 for (i = 0; i <= 8; i++)
588 hw.io_ports_array[i] = ports->dma + 0x20 + i * 4;
591 hw.chipset = ide_pci;
593 rc = ide_host_add(d, hws, &host);
603 * init_setup_scc - set up an SCC PATA Controller
607 * Perform the initial set up for this device.
610 static int __devinit init_setup_scc(struct pci_dev *dev,
611 const struct ide_port_info *d)
613 unsigned long ctl_base;
614 unsigned long dma_base;
615 unsigned long cckctrl_port;
616 unsigned long intmask_port;
617 unsigned long mode_port;
618 unsigned long ecmode_port;
620 struct scc_ports *ports;
623 rc = pci_enable_device(dev);
627 rc = setup_mmio_scc(dev, d->name);
631 ports = pci_get_drvdata(dev);
632 ctl_base = ports->ctl;
633 dma_base = ports->dma;
634 cckctrl_port = ctl_base + 0xff0;
635 intmask_port = dma_base + 0x010;
636 mode_port = ctl_base + 0x024;
637 ecmode_port = ctl_base + 0xf00;
639 /* controller initialization */
641 out_be32((void*)cckctrl_port, reg);
642 reg |= CCKCTRL_ATACLKOEN;
643 out_be32((void*)cckctrl_port, reg);
644 reg |= CCKCTRL_LCLKEN | CCKCTRL_OCLKEN;
645 out_be32((void*)cckctrl_port, reg);
647 out_be32((void*)cckctrl_port, reg);
650 reg = in_be32((void*)cckctrl_port);
651 if (reg & CCKCTRL_CRST)
656 reg |= CCKCTRL_ATARESET;
657 out_be32((void*)cckctrl_port, reg);
659 out_be32((void*)ecmode_port, ECMODE_VALUE);
660 out_be32((void*)mode_port, MODE_JCUSFEN);
661 out_be32((void*)intmask_port, INTMASK_MSK);
663 rc = scc_ide_setup_pci_device(dev, d);
669 static void scc_tf_load(ide_drive_t *drive, ide_task_t *task)
671 struct ide_io_ports *io_ports = &drive->hwif->io_ports;
672 struct ide_taskfile *tf = &task->tf;
673 u8 HIHI = (task->tf_flags & IDE_TFLAG_LBA48) ? 0xE0 : 0xEF;
675 if (task->tf_flags & IDE_TFLAG_FLAGGED)
678 if (task->tf_flags & IDE_TFLAG_OUT_DATA)
679 out_be32((void *)io_ports->data_addr,
680 (tf->hob_data << 8) | tf->data);
682 if (task->tf_flags & IDE_TFLAG_OUT_HOB_FEATURE)
683 scc_ide_outb(tf->hob_feature, io_ports->feature_addr);
684 if (task->tf_flags & IDE_TFLAG_OUT_HOB_NSECT)
685 scc_ide_outb(tf->hob_nsect, io_ports->nsect_addr);
686 if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAL)
687 scc_ide_outb(tf->hob_lbal, io_ports->lbal_addr);
688 if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAM)
689 scc_ide_outb(tf->hob_lbam, io_ports->lbam_addr);
690 if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAH)
691 scc_ide_outb(tf->hob_lbah, io_ports->lbah_addr);
693 if (task->tf_flags & IDE_TFLAG_OUT_FEATURE)
694 scc_ide_outb(tf->feature, io_ports->feature_addr);
695 if (task->tf_flags & IDE_TFLAG_OUT_NSECT)
696 scc_ide_outb(tf->nsect, io_ports->nsect_addr);
697 if (task->tf_flags & IDE_TFLAG_OUT_LBAL)
698 scc_ide_outb(tf->lbal, io_ports->lbal_addr);
699 if (task->tf_flags & IDE_TFLAG_OUT_LBAM)
700 scc_ide_outb(tf->lbam, io_ports->lbam_addr);
701 if (task->tf_flags & IDE_TFLAG_OUT_LBAH)
702 scc_ide_outb(tf->lbah, io_ports->lbah_addr);
704 if (task->tf_flags & IDE_TFLAG_OUT_DEVICE)
705 scc_ide_outb((tf->device & HIHI) | drive->select,
706 io_ports->device_addr);
709 static void scc_tf_read(ide_drive_t *drive, ide_task_t *task)
711 struct ide_io_ports *io_ports = &drive->hwif->io_ports;
712 struct ide_taskfile *tf = &task->tf;
714 if (task->tf_flags & IDE_TFLAG_IN_DATA) {
715 u16 data = (u16)in_be32((void *)io_ports->data_addr);
717 tf->data = data & 0xff;
718 tf->hob_data = (data >> 8) & 0xff;
721 /* be sure we're looking at the low order bits */
722 scc_ide_outb(ATA_DEVCTL_OBS & ~0x80, io_ports->ctl_addr);
724 if (task->tf_flags & IDE_TFLAG_IN_FEATURE)
725 tf->feature = scc_ide_inb(io_ports->feature_addr);
726 if (task->tf_flags & IDE_TFLAG_IN_NSECT)
727 tf->nsect = scc_ide_inb(io_ports->nsect_addr);
728 if (task->tf_flags & IDE_TFLAG_IN_LBAL)
729 tf->lbal = scc_ide_inb(io_ports->lbal_addr);
730 if (task->tf_flags & IDE_TFLAG_IN_LBAM)
731 tf->lbam = scc_ide_inb(io_ports->lbam_addr);
732 if (task->tf_flags & IDE_TFLAG_IN_LBAH)
733 tf->lbah = scc_ide_inb(io_ports->lbah_addr);
734 if (task->tf_flags & IDE_TFLAG_IN_DEVICE)
735 tf->device = scc_ide_inb(io_ports->device_addr);
737 if (task->tf_flags & IDE_TFLAG_LBA48) {
738 scc_ide_outb(ATA_DEVCTL_OBS | 0x80, io_ports->ctl_addr);
740 if (task->tf_flags & IDE_TFLAG_IN_HOB_FEATURE)
741 tf->hob_feature = scc_ide_inb(io_ports->feature_addr);
742 if (task->tf_flags & IDE_TFLAG_IN_HOB_NSECT)
743 tf->hob_nsect = scc_ide_inb(io_ports->nsect_addr);
744 if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAL)
745 tf->hob_lbal = scc_ide_inb(io_ports->lbal_addr);
746 if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAM)
747 tf->hob_lbam = scc_ide_inb(io_ports->lbam_addr);
748 if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAH)
749 tf->hob_lbah = scc_ide_inb(io_ports->lbah_addr);
753 static void scc_input_data(ide_drive_t *drive, struct request *rq,
754 void *buf, unsigned int len)
756 unsigned long data_addr = drive->hwif->io_ports.data_addr;
760 if (drive->io_32bit) {
761 scc_ide_insl(data_addr, buf, len / 4);
764 scc_ide_insw(data_addr, (u8 *)buf + (len & ~3), 1);
766 scc_ide_insw(data_addr, buf, len / 2);
769 static void scc_output_data(ide_drive_t *drive, struct request *rq,
770 void *buf, unsigned int len)
772 unsigned long data_addr = drive->hwif->io_ports.data_addr;
776 if (drive->io_32bit) {
777 scc_ide_outsl(data_addr, buf, len / 4);
780 scc_ide_outsw(data_addr, (u8 *)buf + (len & ~3), 1);
782 scc_ide_outsw(data_addr, buf, len / 2);
786 * init_mmio_iops_scc - set up the iops for MMIO
787 * @hwif: interface to set up
791 static void __devinit init_mmio_iops_scc(ide_hwif_t *hwif)
793 struct pci_dev *dev = to_pci_dev(hwif->dev);
794 struct scc_ports *ports = pci_get_drvdata(dev);
795 unsigned long dma_base = ports->dma;
797 ide_set_hwifdata(hwif, ports);
799 hwif->dma_base = dma_base;
800 hwif->config_data = ports->ctl;
804 * init_iops_scc - set up iops
805 * @hwif: interface to set up
807 * Do the basic setup for the SCC hardware interface
808 * and then do the MMIO setup.
811 static void __devinit init_iops_scc(ide_hwif_t *hwif)
813 struct pci_dev *dev = to_pci_dev(hwif->dev);
815 hwif->hwif_data = NULL;
816 if (pci_get_drvdata(dev) == NULL)
818 init_mmio_iops_scc(hwif);
821 static int __devinit scc_init_dma(ide_hwif_t *hwif,
822 const struct ide_port_info *d)
824 return ide_allocate_dma_engine(hwif);
827 static u8 scc_cable_detect(ide_hwif_t *hwif)
829 return ATA_CBL_PATA80;
833 * init_hwif_scc - set up hwif
834 * @hwif: interface to set up
836 * We do the basic set up of the interface structure. The SCC
837 * requires several custom handlers so we override the default
838 * ide DMA handlers appropriately.
841 static void __devinit init_hwif_scc(ide_hwif_t *hwif)
844 out_be32((void __iomem *)(hwif->dma_base + 0x018), hwif->dmatable_dma);
846 if (in_be32((void __iomem *)(hwif->config_data + 0xff0)) & CCKCTRL_ATACLKOEN)
847 hwif->ultra_mask = ATA_UDMA6; /* 133MHz */
849 hwif->ultra_mask = ATA_UDMA5; /* 100MHz */
852 static const struct ide_tp_ops scc_tp_ops = {
853 .exec_command = scc_exec_command,
854 .read_status = scc_read_status,
855 .read_altstatus = scc_read_altstatus,
856 .read_sff_dma_status = scc_read_sff_dma_status,
858 .set_irq = scc_set_irq,
860 .tf_load = scc_tf_load,
861 .tf_read = scc_tf_read,
863 .input_data = scc_input_data,
864 .output_data = scc_output_data,
867 static const struct ide_port_ops scc_port_ops = {
868 .set_pio_mode = scc_set_pio_mode,
869 .set_dma_mode = scc_set_dma_mode,
870 .udma_filter = scc_udma_filter,
871 .cable_detect = scc_cable_detect,
874 static const struct ide_dma_ops scc_dma_ops = {
875 .dma_host_set = scc_dma_host_set,
876 .dma_setup = scc_dma_setup,
877 .dma_exec_cmd = ide_dma_exec_cmd,
878 .dma_start = scc_dma_start,
879 .dma_end = scc_dma_end,
880 .dma_test_irq = scc_dma_test_irq,
881 .dma_lost_irq = ide_dma_lost_irq,
882 .dma_timeout = ide_dma_timeout,
885 #define DECLARE_SCC_DEV(name_str) \
888 .init_iops = init_iops_scc, \
889 .init_dma = scc_init_dma, \
890 .init_hwif = init_hwif_scc, \
891 .tp_ops = &scc_tp_ops, \
892 .port_ops = &scc_port_ops, \
893 .dma_ops = &scc_dma_ops, \
894 .host_flags = IDE_HFLAG_SINGLE, \
895 .pio_mask = ATA_PIO4, \
898 static const struct ide_port_info scc_chipsets[] __devinitdata = {
899 /* 0 */ DECLARE_SCC_DEV("sccIDE"),
903 * scc_init_one - pci layer discovery entry
905 * @id: ident table entry
907 * Called by the PCI code when it finds an SCC PATA controller.
908 * We then use the IDE PCI generic helper to do most of the work.
911 static int __devinit scc_init_one(struct pci_dev *dev, const struct pci_device_id *id)
913 return init_setup_scc(dev, &scc_chipsets[id->driver_data]);
917 * scc_remove - pci layer remove entry
920 * Called by the PCI code when it removes an SCC PATA controller.
923 static void __devexit scc_remove(struct pci_dev *dev)
925 struct scc_ports *ports = pci_get_drvdata(dev);
926 struct ide_host *host = ports->host;
928 ide_host_remove(host);
930 iounmap((void*)ports->dma);
931 iounmap((void*)ports->ctl);
932 pci_release_selected_regions(dev, (1 << 2) - 1);
933 memset(ports, 0, sizeof(*ports));
936 static const struct pci_device_id scc_pci_tbl[] = {
937 { PCI_VDEVICE(TOSHIBA_2, PCI_DEVICE_ID_TOSHIBA_SCC_ATA), 0 },
940 MODULE_DEVICE_TABLE(pci, scc_pci_tbl);
942 static struct pci_driver scc_pci_driver = {
944 .id_table = scc_pci_tbl,
945 .probe = scc_init_one,
946 .remove = __devexit_p(scc_remove),
949 static int scc_ide_init(void)
951 return ide_pci_register_driver(&scc_pci_driver);
954 module_init(scc_ide_init);
956 static void scc_ide_exit(void)
958 ide_pci_unregister_driver(&scc_pci_driver);
960 module_exit(scc_ide_exit);
964 MODULE_DESCRIPTION("PCI driver module for Toshiba SCC IDE");
965 MODULE_LICENSE("GPL");