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_dma_sff_read_status(ide_hwif_t *hwif)
148 return (u8)in_be32((void *)(hwif->dma_base + 4));
151 static void scc_write_devctl(ide_hwif_t *hwif, u8 ctl)
153 out_be32((void *)hwif->io_ports.ctl_addr, ctl);
155 in_be32((void *)(hwif->dma_base + 0x01c));
159 static void scc_ide_insw(unsigned long port, void *addr, u32 count)
161 u16 *ptr = (u16 *)addr;
163 *ptr++ = le16_to_cpu(in_be32((void*)port));
167 static void scc_ide_insl(unsigned long port, void *addr, u32 count)
169 u16 *ptr = (u16 *)addr;
171 *ptr++ = le16_to_cpu(in_be32((void*)port));
172 *ptr++ = le16_to_cpu(in_be32((void*)port));
176 static void scc_ide_outb(u8 addr, unsigned long port)
178 out_be32((void*)port, addr);
182 scc_ide_outsw(unsigned long port, void *addr, u32 count)
184 u16 *ptr = (u16 *)addr;
186 out_be32((void*)port, cpu_to_le16(*ptr++));
191 scc_ide_outsl(unsigned long port, void *addr, u32 count)
193 u16 *ptr = (u16 *)addr;
195 out_be32((void*)port, cpu_to_le16(*ptr++));
196 out_be32((void*)port, cpu_to_le16(*ptr++));
201 * scc_set_pio_mode - set host controller for PIO mode
203 * @pio: PIO mode number
205 * Load the timing settings for this device mode into the
209 static void scc_set_pio_mode(ide_drive_t *drive, const u8 pio)
211 ide_hwif_t *hwif = drive->hwif;
212 struct scc_ports *ports = ide_get_hwifdata(hwif);
213 unsigned long ctl_base = ports->ctl;
214 unsigned long cckctrl_port = ctl_base + 0xff0;
215 unsigned long piosht_port = ctl_base + 0x000;
216 unsigned long pioct_port = ctl_base + 0x004;
220 reg = in_be32((void __iomem *)cckctrl_port);
221 if (reg & CCKCTRL_ATACLKOEN) {
222 offset = 1; /* 133MHz */
224 offset = 0; /* 100MHz */
226 reg = JCHSTtbl[offset][pio] << 16 | JCHHTtbl[offset][pio];
227 out_be32((void __iomem *)piosht_port, reg);
228 reg = JCHCTtbl[offset][pio];
229 out_be32((void __iomem *)pioct_port, reg);
233 * scc_set_dma_mode - set host controller for DMA mode
237 * Load the timing settings for this device mode into the
241 static void scc_set_dma_mode(ide_drive_t *drive, const u8 speed)
243 ide_hwif_t *hwif = drive->hwif;
244 struct scc_ports *ports = ide_get_hwifdata(hwif);
245 unsigned long ctl_base = ports->ctl;
246 unsigned long cckctrl_port = ctl_base + 0xff0;
247 unsigned long mdmact_port = ctl_base + 0x008;
248 unsigned long mcrcst_port = ctl_base + 0x00c;
249 unsigned long sdmact_port = ctl_base + 0x010;
250 unsigned long scrcst_port = ctl_base + 0x014;
251 unsigned long udenvt_port = ctl_base + 0x018;
252 unsigned long tdvhsel_port = ctl_base + 0x020;
253 int is_slave = drive->dn & 1;
256 unsigned long jcactsel;
258 reg = in_be32((void __iomem *)cckctrl_port);
259 if (reg & CCKCTRL_ATACLKOEN) {
260 offset = 1; /* 133MHz */
262 offset = 0; /* 100MHz */
265 idx = speed - XFER_UDMA_0;
267 jcactsel = JCACTSELtbl[offset][idx];
269 out_be32((void __iomem *)sdmact_port, JCHDCTxtbl[offset][idx]);
270 out_be32((void __iomem *)scrcst_port, JCSTWTxtbl[offset][idx]);
271 jcactsel = jcactsel << 2;
272 out_be32((void __iomem *)tdvhsel_port, (in_be32((void __iomem *)tdvhsel_port) & ~TDVHSEL_SLAVE) | jcactsel);
274 out_be32((void __iomem *)mdmact_port, JCHDCTxtbl[offset][idx]);
275 out_be32((void __iomem *)mcrcst_port, JCSTWTxtbl[offset][idx]);
276 out_be32((void __iomem *)tdvhsel_port, (in_be32((void __iomem *)tdvhsel_port) & ~TDVHSEL_MASTER) | jcactsel);
278 reg = JCTSStbl[offset][idx] << 16 | JCENVTtbl[offset][idx];
279 out_be32((void __iomem *)udenvt_port, reg);
282 static void scc_dma_host_set(ide_drive_t *drive, int on)
284 ide_hwif_t *hwif = drive->hwif;
285 u8 unit = drive->dn & 1;
286 u8 dma_stat = scc_dma_sff_read_status(hwif);
289 dma_stat |= (1 << (5 + unit));
291 dma_stat &= ~(1 << (5 + unit));
293 scc_ide_outb(dma_stat, hwif->dma_base + 4);
297 * scc_dma_setup - begin a DMA phase
298 * @drive: target device
301 * Build an IDE DMA PRD (IDE speak for scatter gather table)
302 * and then set up the DMA transfer registers.
304 * Returns 0 on success. If a PIO fallback is required then 1
308 static int scc_dma_setup(ide_drive_t *drive, struct ide_cmd *cmd)
310 ide_hwif_t *hwif = drive->hwif;
311 u32 rw = (cmd->tf_flags & IDE_TFLAG_WRITE) ? 0 : ATA_DMA_WR;
314 /* fall back to pio! */
315 if (ide_build_dmatable(drive, cmd) == 0)
319 out_be32((void __iomem *)(hwif->dma_base + 8), hwif->dmatable_dma);
322 out_be32((void __iomem *)hwif->dma_base, rw);
324 /* read DMA status for INTR & ERROR flags */
325 dma_stat = scc_dma_sff_read_status(hwif);
327 /* clear INTR & ERROR flags */
328 out_be32((void __iomem *)(hwif->dma_base + 4), dma_stat | 6);
333 static void scc_dma_start(ide_drive_t *drive)
335 ide_hwif_t *hwif = drive->hwif;
336 u8 dma_cmd = scc_ide_inb(hwif->dma_base);
339 scc_ide_outb(dma_cmd | 1, hwif->dma_base);
342 static int __scc_dma_end(ide_drive_t *drive)
344 ide_hwif_t *hwif = drive->hwif;
345 u8 dma_stat, dma_cmd;
347 /* get DMA command mode */
348 dma_cmd = scc_ide_inb(hwif->dma_base);
350 scc_ide_outb(dma_cmd & ~1, hwif->dma_base);
352 dma_stat = scc_dma_sff_read_status(hwif);
353 /* clear the INTR & ERROR bits */
354 scc_ide_outb(dma_stat | 6, hwif->dma_base + 4);
355 /* verify good DMA status */
356 return (dma_stat & 7) != 4 ? (0x10 | dma_stat) : 0;
360 * scc_dma_end - Stop DMA
363 * Check and clear INT Status register.
364 * Then call __scc_dma_end().
367 static int scc_dma_end(ide_drive_t *drive)
369 ide_hwif_t *hwif = drive->hwif;
370 void __iomem *dma_base = (void __iomem *)hwif->dma_base;
371 unsigned long intsts_port = hwif->dma_base + 0x014;
373 int dma_stat, data_loss = 0;
374 static int retry = 0;
376 /* errata A308 workaround: Step5 (check data loss) */
377 /* We don't check non ide_disk because it is limited to UDMA4 */
378 if (!(in_be32((void __iomem *)hwif->io_ports.ctl_addr)
380 drive->media == ide_disk && drive->current_speed > XFER_UDMA_4) {
381 reg = in_be32((void __iomem *)intsts_port);
382 if (!(reg & INTSTS_ACTEINT)) {
383 printk(KERN_WARNING "%s: operation failed (transfer data loss)\n",
387 struct request *rq = hwif->rq;
391 /* ERROR_RESET and drive->crc_count are needed
392 * to reduce DMA transfer mode in retry process.
395 rq->errors |= ERROR_RESET;
397 ide_port_for_each_dev(i, drive, hwif)
404 reg = in_be32((void __iomem *)intsts_port);
406 if (reg & INTSTS_SERROR) {
407 printk(KERN_WARNING "%s: SERROR\n", SCC_PATA_NAME);
408 out_be32((void __iomem *)intsts_port, INTSTS_SERROR|INTSTS_BMSINT);
410 out_be32(dma_base, in_be32(dma_base) & ~QCHCD_IOS_SS);
414 if (reg & INTSTS_PRERR) {
416 unsigned long ctl_base = hwif->config_data;
418 maea0 = in_be32((void __iomem *)(ctl_base + 0xF50));
419 maec0 = in_be32((void __iomem *)(ctl_base + 0xF54));
421 printk(KERN_WARNING "%s: PRERR [addr:%x cmd:%x]\n", SCC_PATA_NAME, maea0, maec0);
423 out_be32((void __iomem *)intsts_port, INTSTS_PRERR|INTSTS_BMSINT);
425 out_be32(dma_base, in_be32(dma_base) & ~QCHCD_IOS_SS);
429 if (reg & INTSTS_RERR) {
430 printk(KERN_WARNING "%s: Response Error\n", SCC_PATA_NAME);
431 out_be32((void __iomem *)intsts_port, INTSTS_RERR|INTSTS_BMSINT);
433 out_be32(dma_base, in_be32(dma_base) & ~QCHCD_IOS_SS);
437 if (reg & INTSTS_ICERR) {
438 out_be32(dma_base, in_be32(dma_base) & ~QCHCD_IOS_SS);
440 printk(KERN_WARNING "%s: Illegal Configuration\n", SCC_PATA_NAME);
441 out_be32((void __iomem *)intsts_port, INTSTS_ICERR|INTSTS_BMSINT);
445 if (reg & INTSTS_BMSINT) {
446 printk(KERN_WARNING "%s: Internal Bus Error\n", SCC_PATA_NAME);
447 out_be32((void __iomem *)intsts_port, INTSTS_BMSINT);
453 if (reg & INTSTS_BMHE) {
454 out_be32((void __iomem *)intsts_port, INTSTS_BMHE);
458 if (reg & INTSTS_ACTEINT) {
459 out_be32((void __iomem *)intsts_port, INTSTS_ACTEINT);
463 if (reg & INTSTS_IOIRQS) {
464 out_be32((void __iomem *)intsts_port, INTSTS_IOIRQS);
470 dma_stat = __scc_dma_end(drive);
472 dma_stat |= 2; /* emulate DMA error (to retry command) */
476 /* returns 1 if dma irq issued, 0 otherwise */
477 static int scc_dma_test_irq(ide_drive_t *drive)
479 ide_hwif_t *hwif = drive->hwif;
480 u32 int_stat = in_be32((void __iomem *)hwif->dma_base + 0x014);
482 /* SCC errata A252,A308 workaround: Step4 */
483 if ((in_be32((void __iomem *)hwif->io_ports.ctl_addr)
485 (int_stat & INTSTS_INTRQ))
488 /* SCC errata A308 workaround: Step5 (polling IOIRQS) */
489 if (int_stat & INTSTS_IOIRQS)
495 static u8 scc_udma_filter(ide_drive_t *drive)
497 ide_hwif_t *hwif = drive->hwif;
498 u8 mask = hwif->ultra_mask;
500 /* errata A308 workaround: limit non ide_disk drive to UDMA4 */
501 if ((drive->media != ide_disk) && (mask & 0xE0)) {
502 printk(KERN_INFO "%s: limit %s to UDMA4\n",
503 SCC_PATA_NAME, drive->name);
511 * setup_mmio_scc - map CTRL/BMID region
512 * @dev: PCI device we are configuring
517 static int setup_mmio_scc (struct pci_dev *dev, const char *name)
519 void __iomem *ctl_addr;
520 void __iomem *dma_addr;
523 for (i = 0; i < MAX_HWIFS; i++) {
524 if (scc_ports[i].ctl == 0)
530 ret = pci_request_selected_regions(dev, (1 << 2) - 1, name);
532 printk(KERN_ERR "%s: can't reserve resources\n", name);
536 ctl_addr = pci_ioremap_bar(dev, 0);
540 dma_addr = pci_ioremap_bar(dev, 1);
545 scc_ports[i].ctl = (unsigned long)ctl_addr;
546 scc_ports[i].dma = (unsigned long)dma_addr;
547 pci_set_drvdata(dev, (void *) &scc_ports[i]);
557 static int scc_ide_setup_pci_device(struct pci_dev *dev,
558 const struct ide_port_info *d)
560 struct scc_ports *ports = pci_get_drvdata(dev);
561 struct ide_host *host;
562 hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
565 memset(&hw, 0, sizeof(hw));
566 for (i = 0; i <= 8; i++)
567 hw.io_ports_array[i] = ports->dma + 0x20 + i * 4;
570 hw.chipset = ide_pci;
572 rc = ide_host_add(d, hws, &host);
582 * init_setup_scc - set up an SCC PATA Controller
586 * Perform the initial set up for this device.
589 static int __devinit init_setup_scc(struct pci_dev *dev,
590 const struct ide_port_info *d)
592 unsigned long ctl_base;
593 unsigned long dma_base;
594 unsigned long cckctrl_port;
595 unsigned long intmask_port;
596 unsigned long mode_port;
597 unsigned long ecmode_port;
599 struct scc_ports *ports;
602 rc = pci_enable_device(dev);
606 rc = setup_mmio_scc(dev, d->name);
610 ports = pci_get_drvdata(dev);
611 ctl_base = ports->ctl;
612 dma_base = ports->dma;
613 cckctrl_port = ctl_base + 0xff0;
614 intmask_port = dma_base + 0x010;
615 mode_port = ctl_base + 0x024;
616 ecmode_port = ctl_base + 0xf00;
618 /* controller initialization */
620 out_be32((void*)cckctrl_port, reg);
621 reg |= CCKCTRL_ATACLKOEN;
622 out_be32((void*)cckctrl_port, reg);
623 reg |= CCKCTRL_LCLKEN | CCKCTRL_OCLKEN;
624 out_be32((void*)cckctrl_port, reg);
626 out_be32((void*)cckctrl_port, reg);
629 reg = in_be32((void*)cckctrl_port);
630 if (reg & CCKCTRL_CRST)
635 reg |= CCKCTRL_ATARESET;
636 out_be32((void*)cckctrl_port, reg);
638 out_be32((void*)ecmode_port, ECMODE_VALUE);
639 out_be32((void*)mode_port, MODE_JCUSFEN);
640 out_be32((void*)intmask_port, INTMASK_MSK);
642 rc = scc_ide_setup_pci_device(dev, d);
648 static void scc_tf_load(ide_drive_t *drive, struct ide_cmd *cmd)
650 struct ide_io_ports *io_ports = &drive->hwif->io_ports;
651 struct ide_taskfile *tf = &cmd->tf;
652 u8 HIHI = (cmd->tf_flags & IDE_TFLAG_LBA48) ? 0xE0 : 0xEF;
654 if (cmd->ftf_flags & IDE_FTFLAG_FLAGGED)
657 if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_FEATURE)
658 scc_ide_outb(tf->hob_feature, io_ports->feature_addr);
659 if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_NSECT)
660 scc_ide_outb(tf->hob_nsect, io_ports->nsect_addr);
661 if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_LBAL)
662 scc_ide_outb(tf->hob_lbal, io_ports->lbal_addr);
663 if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_LBAM)
664 scc_ide_outb(tf->hob_lbam, io_ports->lbam_addr);
665 if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_LBAH)
666 scc_ide_outb(tf->hob_lbah, io_ports->lbah_addr);
668 if (cmd->tf_flags & IDE_TFLAG_OUT_FEATURE)
669 scc_ide_outb(tf->feature, io_ports->feature_addr);
670 if (cmd->tf_flags & IDE_TFLAG_OUT_NSECT)
671 scc_ide_outb(tf->nsect, io_ports->nsect_addr);
672 if (cmd->tf_flags & IDE_TFLAG_OUT_LBAL)
673 scc_ide_outb(tf->lbal, io_ports->lbal_addr);
674 if (cmd->tf_flags & IDE_TFLAG_OUT_LBAM)
675 scc_ide_outb(tf->lbam, io_ports->lbam_addr);
676 if (cmd->tf_flags & IDE_TFLAG_OUT_LBAH)
677 scc_ide_outb(tf->lbah, io_ports->lbah_addr);
679 if (cmd->tf_flags & IDE_TFLAG_OUT_DEVICE)
680 scc_ide_outb((tf->device & HIHI) | drive->select,
681 io_ports->device_addr);
684 static void scc_tf_read(ide_drive_t *drive, struct ide_cmd *cmd)
686 struct ide_io_ports *io_ports = &drive->hwif->io_ports;
687 struct ide_taskfile *tf = &cmd->tf;
689 /* be sure we're looking at the low order bits */
690 scc_ide_outb(ATA_DEVCTL_OBS, io_ports->ctl_addr);
692 if (cmd->tf_flags & IDE_TFLAG_IN_ERROR)
693 tf->error = scc_ide_inb(io_ports->feature_addr);
694 if (cmd->tf_flags & IDE_TFLAG_IN_NSECT)
695 tf->nsect = scc_ide_inb(io_ports->nsect_addr);
696 if (cmd->tf_flags & IDE_TFLAG_IN_LBAL)
697 tf->lbal = scc_ide_inb(io_ports->lbal_addr);
698 if (cmd->tf_flags & IDE_TFLAG_IN_LBAM)
699 tf->lbam = scc_ide_inb(io_ports->lbam_addr);
700 if (cmd->tf_flags & IDE_TFLAG_IN_LBAH)
701 tf->lbah = scc_ide_inb(io_ports->lbah_addr);
702 if (cmd->tf_flags & IDE_TFLAG_IN_DEVICE)
703 tf->device = scc_ide_inb(io_ports->device_addr);
705 if (cmd->tf_flags & IDE_TFLAG_LBA48) {
706 scc_ide_outb(ATA_HOB | ATA_DEVCTL_OBS, io_ports->ctl_addr);
708 if (cmd->tf_flags & IDE_TFLAG_IN_HOB_ERROR)
709 tf->hob_error = scc_ide_inb(io_ports->feature_addr);
710 if (cmd->tf_flags & IDE_TFLAG_IN_HOB_NSECT)
711 tf->hob_nsect = scc_ide_inb(io_ports->nsect_addr);
712 if (cmd->tf_flags & IDE_TFLAG_IN_HOB_LBAL)
713 tf->hob_lbal = scc_ide_inb(io_ports->lbal_addr);
714 if (cmd->tf_flags & IDE_TFLAG_IN_HOB_LBAM)
715 tf->hob_lbam = scc_ide_inb(io_ports->lbam_addr);
716 if (cmd->tf_flags & IDE_TFLAG_IN_HOB_LBAH)
717 tf->hob_lbah = scc_ide_inb(io_ports->lbah_addr);
721 static void scc_input_data(ide_drive_t *drive, struct ide_cmd *cmd,
722 void *buf, unsigned int len)
724 unsigned long data_addr = drive->hwif->io_ports.data_addr;
728 if (drive->io_32bit) {
729 scc_ide_insl(data_addr, buf, len / 4);
732 scc_ide_insw(data_addr, (u8 *)buf + (len & ~3), 1);
734 scc_ide_insw(data_addr, buf, len / 2);
737 static void scc_output_data(ide_drive_t *drive, struct ide_cmd *cmd,
738 void *buf, unsigned int len)
740 unsigned long data_addr = drive->hwif->io_ports.data_addr;
744 if (drive->io_32bit) {
745 scc_ide_outsl(data_addr, buf, len / 4);
748 scc_ide_outsw(data_addr, (u8 *)buf + (len & ~3), 1);
750 scc_ide_outsw(data_addr, buf, len / 2);
754 * init_mmio_iops_scc - set up the iops for MMIO
755 * @hwif: interface to set up
759 static void __devinit init_mmio_iops_scc(ide_hwif_t *hwif)
761 struct pci_dev *dev = to_pci_dev(hwif->dev);
762 struct scc_ports *ports = pci_get_drvdata(dev);
763 unsigned long dma_base = ports->dma;
765 ide_set_hwifdata(hwif, ports);
767 hwif->dma_base = dma_base;
768 hwif->config_data = ports->ctl;
772 * init_iops_scc - set up iops
773 * @hwif: interface to set up
775 * Do the basic setup for the SCC hardware interface
776 * and then do the MMIO setup.
779 static void __devinit init_iops_scc(ide_hwif_t *hwif)
781 struct pci_dev *dev = to_pci_dev(hwif->dev);
783 hwif->hwif_data = NULL;
784 if (pci_get_drvdata(dev) == NULL)
786 init_mmio_iops_scc(hwif);
789 static int __devinit scc_init_dma(ide_hwif_t *hwif,
790 const struct ide_port_info *d)
792 return ide_allocate_dma_engine(hwif);
795 static u8 scc_cable_detect(ide_hwif_t *hwif)
797 return ATA_CBL_PATA80;
801 * init_hwif_scc - set up hwif
802 * @hwif: interface to set up
804 * We do the basic set up of the interface structure. The SCC
805 * requires several custom handlers so we override the default
806 * ide DMA handlers appropriately.
809 static void __devinit init_hwif_scc(ide_hwif_t *hwif)
812 out_be32((void __iomem *)(hwif->dma_base + 0x018), hwif->dmatable_dma);
814 if (in_be32((void __iomem *)(hwif->config_data + 0xff0)) & CCKCTRL_ATACLKOEN)
815 hwif->ultra_mask = ATA_UDMA6; /* 133MHz */
817 hwif->ultra_mask = ATA_UDMA5; /* 100MHz */
820 static const struct ide_tp_ops scc_tp_ops = {
821 .exec_command = scc_exec_command,
822 .read_status = scc_read_status,
823 .read_altstatus = scc_read_altstatus,
824 .write_devctl = scc_write_devctl,
826 .dev_select = ide_dev_select,
827 .tf_load = scc_tf_load,
828 .tf_read = scc_tf_read,
830 .input_data = scc_input_data,
831 .output_data = scc_output_data,
834 static const struct ide_port_ops scc_port_ops = {
835 .set_pio_mode = scc_set_pio_mode,
836 .set_dma_mode = scc_set_dma_mode,
837 .udma_filter = scc_udma_filter,
838 .cable_detect = scc_cable_detect,
841 static const struct ide_dma_ops scc_dma_ops = {
842 .dma_host_set = scc_dma_host_set,
843 .dma_setup = scc_dma_setup,
844 .dma_start = scc_dma_start,
845 .dma_end = scc_dma_end,
846 .dma_test_irq = scc_dma_test_irq,
847 .dma_lost_irq = ide_dma_lost_irq,
848 .dma_timer_expiry = ide_dma_sff_timer_expiry,
849 .dma_sff_read_status = scc_dma_sff_read_status,
852 static const struct ide_port_info scc_chipset __devinitdata = {
854 .init_iops = init_iops_scc,
855 .init_dma = scc_init_dma,
856 .init_hwif = init_hwif_scc,
857 .tp_ops = &scc_tp_ops,
858 .port_ops = &scc_port_ops,
859 .dma_ops = &scc_dma_ops,
860 .host_flags = IDE_HFLAG_SINGLE,
861 .irq_flags = IRQF_SHARED,
862 .pio_mask = ATA_PIO4,
866 * scc_init_one - pci layer discovery entry
868 * @id: ident table entry
870 * Called by the PCI code when it finds an SCC PATA controller.
871 * We then use the IDE PCI generic helper to do most of the work.
874 static int __devinit scc_init_one(struct pci_dev *dev, const struct pci_device_id *id)
876 return init_setup_scc(dev, &scc_chipset);
880 * scc_remove - pci layer remove entry
883 * Called by the PCI code when it removes an SCC PATA controller.
886 static void __devexit scc_remove(struct pci_dev *dev)
888 struct scc_ports *ports = pci_get_drvdata(dev);
889 struct ide_host *host = ports->host;
891 ide_host_remove(host);
893 iounmap((void*)ports->dma);
894 iounmap((void*)ports->ctl);
895 pci_release_selected_regions(dev, (1 << 2) - 1);
896 memset(ports, 0, sizeof(*ports));
899 static const struct pci_device_id scc_pci_tbl[] = {
900 { PCI_VDEVICE(TOSHIBA_2, PCI_DEVICE_ID_TOSHIBA_SCC_ATA), 0 },
903 MODULE_DEVICE_TABLE(pci, scc_pci_tbl);
905 static struct pci_driver scc_pci_driver = {
907 .id_table = scc_pci_tbl,
908 .probe = scc_init_one,
909 .remove = __devexit_p(scc_remove),
912 static int scc_ide_init(void)
914 return ide_pci_register_driver(&scc_pci_driver);
917 module_init(scc_ide_init);
919 static void scc_ide_exit(void)
921 ide_pci_unregister_driver(&scc_pci_driver);
923 module_exit(scc_ide_exit);
927 MODULE_DESCRIPTION("PCI driver module for Toshiba SCC IDE");
928 MODULE_LICENSE("GPL");