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_altstatus(ide_hwif_t *hwif)
144 return (u8)in_be32((void *)hwif->io_ports.ctl_addr);
147 static u8 scc_read_sff_dma_status(ide_hwif_t *hwif)
149 return (u8)in_be32((void *)(hwif->dma_base + 4));
152 static void scc_set_irq(ide_hwif_t *hwif, int on)
154 u8 ctl = ATA_DEVCTL_OBS;
156 if (on == 4) { /* hack for SRST */
163 out_be32((void *)hwif->io_ports.ctl_addr, ctl);
165 in_be32((void *)(hwif->dma_base + 0x01c));
169 static void scc_ide_insw(unsigned long port, void *addr, u32 count)
171 u16 *ptr = (u16 *)addr;
173 *ptr++ = le16_to_cpu(in_be32((void*)port));
177 static void scc_ide_insl(unsigned long port, void *addr, u32 count)
179 u16 *ptr = (u16 *)addr;
181 *ptr++ = le16_to_cpu(in_be32((void*)port));
182 *ptr++ = le16_to_cpu(in_be32((void*)port));
186 static void scc_ide_outb(u8 addr, unsigned long port)
188 out_be32((void*)port, addr);
191 static void scc_ide_outbsync(ide_hwif_t *hwif, u8 addr, unsigned long port)
193 out_be32((void*)port, addr);
195 in_be32((void*)(hwif->dma_base + 0x01c));
200 scc_ide_outsw(unsigned long port, void *addr, u32 count)
202 u16 *ptr = (u16 *)addr;
204 out_be32((void*)port, cpu_to_le16(*ptr++));
209 scc_ide_outsl(unsigned long port, void *addr, u32 count)
211 u16 *ptr = (u16 *)addr;
213 out_be32((void*)port, cpu_to_le16(*ptr++));
214 out_be32((void*)port, cpu_to_le16(*ptr++));
219 * scc_set_pio_mode - set host controller for PIO mode
221 * @pio: PIO mode number
223 * Load the timing settings for this device mode into the
227 static void scc_set_pio_mode(ide_drive_t *drive, const u8 pio)
229 ide_hwif_t *hwif = HWIF(drive);
230 struct scc_ports *ports = ide_get_hwifdata(hwif);
231 unsigned long ctl_base = ports->ctl;
232 unsigned long cckctrl_port = ctl_base + 0xff0;
233 unsigned long piosht_port = ctl_base + 0x000;
234 unsigned long pioct_port = ctl_base + 0x004;
238 reg = in_be32((void __iomem *)cckctrl_port);
239 if (reg & CCKCTRL_ATACLKOEN) {
240 offset = 1; /* 133MHz */
242 offset = 0; /* 100MHz */
244 reg = JCHSTtbl[offset][pio] << 16 | JCHHTtbl[offset][pio];
245 out_be32((void __iomem *)piosht_port, reg);
246 reg = JCHCTtbl[offset][pio];
247 out_be32((void __iomem *)pioct_port, reg);
251 * scc_set_dma_mode - set host controller for DMA mode
255 * Load the timing settings for this device mode into the
259 static void scc_set_dma_mode(ide_drive_t *drive, const u8 speed)
261 ide_hwif_t *hwif = HWIF(drive);
262 struct scc_ports *ports = ide_get_hwifdata(hwif);
263 unsigned long ctl_base = ports->ctl;
264 unsigned long cckctrl_port = ctl_base + 0xff0;
265 unsigned long mdmact_port = ctl_base + 0x008;
266 unsigned long mcrcst_port = ctl_base + 0x00c;
267 unsigned long sdmact_port = ctl_base + 0x010;
268 unsigned long scrcst_port = ctl_base + 0x014;
269 unsigned long udenvt_port = ctl_base + 0x018;
270 unsigned long tdvhsel_port = ctl_base + 0x020;
271 int is_slave = (&hwif->drives[1] == drive);
274 unsigned long jcactsel;
276 reg = in_be32((void __iomem *)cckctrl_port);
277 if (reg & CCKCTRL_ATACLKOEN) {
278 offset = 1; /* 133MHz */
280 offset = 0; /* 100MHz */
283 idx = speed - XFER_UDMA_0;
285 jcactsel = JCACTSELtbl[offset][idx];
287 out_be32((void __iomem *)sdmact_port, JCHDCTxtbl[offset][idx]);
288 out_be32((void __iomem *)scrcst_port, JCSTWTxtbl[offset][idx]);
289 jcactsel = jcactsel << 2;
290 out_be32((void __iomem *)tdvhsel_port, (in_be32((void __iomem *)tdvhsel_port) & ~TDVHSEL_SLAVE) | jcactsel);
292 out_be32((void __iomem *)mdmact_port, JCHDCTxtbl[offset][idx]);
293 out_be32((void __iomem *)mcrcst_port, JCSTWTxtbl[offset][idx]);
294 out_be32((void __iomem *)tdvhsel_port, (in_be32((void __iomem *)tdvhsel_port) & ~TDVHSEL_MASTER) | jcactsel);
296 reg = JCTSStbl[offset][idx] << 16 | JCENVTtbl[offset][idx];
297 out_be32((void __iomem *)udenvt_port, reg);
300 static void scc_dma_host_set(ide_drive_t *drive, int on)
302 ide_hwif_t *hwif = drive->hwif;
303 u8 unit = (drive->select.b.unit & 0x01);
304 u8 dma_stat = scc_ide_inb(hwif->dma_base + 4);
307 dma_stat |= (1 << (5 + unit));
309 dma_stat &= ~(1 << (5 + unit));
311 scc_ide_outb(dma_stat, hwif->dma_base + 4);
315 * scc_ide_dma_setup - begin a DMA phase
316 * @drive: target device
318 * Build an IDE DMA PRD (IDE speak for scatter gather table)
319 * and then set up the DMA transfer registers.
321 * Returns 0 on success. If a PIO fallback is required then 1
325 static int scc_dma_setup(ide_drive_t *drive)
327 ide_hwif_t *hwif = drive->hwif;
328 struct request *rq = HWGROUP(drive)->rq;
329 unsigned int reading;
337 /* fall back to pio! */
338 if (!ide_build_dmatable(drive, rq)) {
339 ide_map_sg(drive, rq);
344 out_be32((void __iomem *)(hwif->dma_base + 8), hwif->dmatable_dma);
347 out_be32((void __iomem *)hwif->dma_base, reading);
349 /* read DMA status for INTR & ERROR flags */
350 dma_stat = in_be32((void __iomem *)(hwif->dma_base + 4));
352 /* clear INTR & ERROR flags */
353 out_be32((void __iomem *)(hwif->dma_base + 4), dma_stat | 6);
354 drive->waiting_for_dma = 1;
358 static void scc_dma_start(ide_drive_t *drive)
360 ide_hwif_t *hwif = drive->hwif;
361 u8 dma_cmd = scc_ide_inb(hwif->dma_base);
364 scc_ide_outb(dma_cmd | 1, hwif->dma_base);
369 static int __scc_dma_end(ide_drive_t *drive)
371 ide_hwif_t *hwif = drive->hwif;
372 u8 dma_stat, dma_cmd;
374 drive->waiting_for_dma = 0;
375 /* get DMA command mode */
376 dma_cmd = scc_ide_inb(hwif->dma_base);
378 scc_ide_outb(dma_cmd & ~1, hwif->dma_base);
380 dma_stat = scc_ide_inb(hwif->dma_base + 4);
381 /* clear the INTR & ERROR bits */
382 scc_ide_outb(dma_stat | 6, hwif->dma_base + 4);
383 /* purge DMA mappings */
384 ide_destroy_dmatable(drive);
385 /* verify good DMA status */
388 return (dma_stat & 7) != 4 ? (0x10 | dma_stat) : 0;
392 * scc_dma_end - Stop DMA
395 * Check and clear INT Status register.
396 * Then call __scc_dma_end().
399 static int scc_dma_end(ide_drive_t *drive)
401 ide_hwif_t *hwif = HWIF(drive);
402 void __iomem *dma_base = (void __iomem *)hwif->dma_base;
403 unsigned long intsts_port = hwif->dma_base + 0x014;
405 int dma_stat, data_loss = 0;
406 static int retry = 0;
408 /* errata A308 workaround: Step5 (check data loss) */
409 /* We don't check non ide_disk because it is limited to UDMA4 */
410 if (!(in_be32((void __iomem *)hwif->io_ports.ctl_addr)
412 drive->media == ide_disk && drive->current_speed > XFER_UDMA_4) {
413 reg = in_be32((void __iomem *)intsts_port);
414 if (!(reg & INTSTS_ACTEINT)) {
415 printk(KERN_WARNING "%s: operation failed (transfer data loss)\n",
419 struct request *rq = HWGROUP(drive)->rq;
421 /* ERROR_RESET and drive->crc_count are needed
422 * to reduce DMA transfer mode in retry process.
425 rq->errors |= ERROR_RESET;
426 for (unit = 0; unit < MAX_DRIVES; unit++) {
427 ide_drive_t *drive = &hwif->drives[unit];
435 reg = in_be32((void __iomem *)intsts_port);
437 if (reg & INTSTS_SERROR) {
438 printk(KERN_WARNING "%s: SERROR\n", SCC_PATA_NAME);
439 out_be32((void __iomem *)intsts_port, INTSTS_SERROR|INTSTS_BMSINT);
441 out_be32(dma_base, in_be32(dma_base) & ~QCHCD_IOS_SS);
445 if (reg & INTSTS_PRERR) {
447 unsigned long ctl_base = hwif->config_data;
449 maea0 = in_be32((void __iomem *)(ctl_base + 0xF50));
450 maec0 = in_be32((void __iomem *)(ctl_base + 0xF54));
452 printk(KERN_WARNING "%s: PRERR [addr:%x cmd:%x]\n", SCC_PATA_NAME, maea0, maec0);
454 out_be32((void __iomem *)intsts_port, INTSTS_PRERR|INTSTS_BMSINT);
456 out_be32(dma_base, in_be32(dma_base) & ~QCHCD_IOS_SS);
460 if (reg & INTSTS_RERR) {
461 printk(KERN_WARNING "%s: Response Error\n", SCC_PATA_NAME);
462 out_be32((void __iomem *)intsts_port, INTSTS_RERR|INTSTS_BMSINT);
464 out_be32(dma_base, in_be32(dma_base) & ~QCHCD_IOS_SS);
468 if (reg & INTSTS_ICERR) {
469 out_be32(dma_base, in_be32(dma_base) & ~QCHCD_IOS_SS);
471 printk(KERN_WARNING "%s: Illegal Configuration\n", SCC_PATA_NAME);
472 out_be32((void __iomem *)intsts_port, INTSTS_ICERR|INTSTS_BMSINT);
476 if (reg & INTSTS_BMSINT) {
477 printk(KERN_WARNING "%s: Internal Bus Error\n", SCC_PATA_NAME);
478 out_be32((void __iomem *)intsts_port, INTSTS_BMSINT);
484 if (reg & INTSTS_BMHE) {
485 out_be32((void __iomem *)intsts_port, INTSTS_BMHE);
489 if (reg & INTSTS_ACTEINT) {
490 out_be32((void __iomem *)intsts_port, INTSTS_ACTEINT);
494 if (reg & INTSTS_IOIRQS) {
495 out_be32((void __iomem *)intsts_port, INTSTS_IOIRQS);
501 dma_stat = __scc_dma_end(drive);
503 dma_stat |= 2; /* emulate DMA error (to retry command) */
507 /* returns 1 if dma irq issued, 0 otherwise */
508 static int scc_dma_test_irq(ide_drive_t *drive)
510 ide_hwif_t *hwif = HWIF(drive);
511 u32 int_stat = in_be32((void __iomem *)hwif->dma_base + 0x014);
513 /* SCC errata A252,A308 workaround: Step4 */
514 if ((in_be32((void __iomem *)hwif->io_ports.ctl_addr)
516 (int_stat & INTSTS_INTRQ))
519 /* SCC errata A308 workaround: Step5 (polling IOIRQS) */
520 if (int_stat & INTSTS_IOIRQS)
523 if (!drive->waiting_for_dma)
524 printk(KERN_WARNING "%s: (%s) called while not waiting\n",
525 drive->name, __func__);
529 static u8 scc_udma_filter(ide_drive_t *drive)
531 ide_hwif_t *hwif = drive->hwif;
532 u8 mask = hwif->ultra_mask;
534 /* errata A308 workaround: limit non ide_disk drive to UDMA4 */
535 if ((drive->media != ide_disk) && (mask & 0xE0)) {
536 printk(KERN_INFO "%s: limit %s to UDMA4\n",
537 SCC_PATA_NAME, drive->name);
545 * setup_mmio_scc - map CTRL/BMID region
546 * @dev: PCI device we are configuring
551 static int setup_mmio_scc (struct pci_dev *dev, const char *name)
553 unsigned long ctl_base = pci_resource_start(dev, 0);
554 unsigned long dma_base = pci_resource_start(dev, 1);
555 unsigned long ctl_size = pci_resource_len(dev, 0);
556 unsigned long dma_size = pci_resource_len(dev, 1);
557 void __iomem *ctl_addr;
558 void __iomem *dma_addr;
561 for (i = 0; i < MAX_HWIFS; i++) {
562 if (scc_ports[i].ctl == 0)
568 ret = pci_request_selected_regions(dev, (1 << 2) - 1, name);
570 printk(KERN_ERR "%s: can't reserve resources\n", name);
574 if ((ctl_addr = ioremap(ctl_base, ctl_size)) == NULL)
577 if ((dma_addr = ioremap(dma_base, dma_size)) == NULL)
581 scc_ports[i].ctl = (unsigned long)ctl_addr;
582 scc_ports[i].dma = (unsigned long)dma_addr;
583 pci_set_drvdata(dev, (void *) &scc_ports[i]);
593 static int scc_ide_setup_pci_device(struct pci_dev *dev,
594 const struct ide_port_info *d)
596 struct scc_ports *ports = pci_get_drvdata(dev);
597 ide_hwif_t *hwif = NULL;
598 hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
599 u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
602 hwif = ide_find_port_slot(d);
606 memset(&hw, 0, sizeof(hw));
607 for (i = 0; i <= 8; i++)
608 hw.io_ports_array[i] = ports->dma + 0x20 + i * 4;
611 hw.chipset = ide_pci;
613 idx[0] = hwif->index;
615 ide_device_add(idx, d, hws);
621 * init_setup_scc - set up an SCC PATA Controller
625 * Perform the initial set up for this device.
628 static int __devinit init_setup_scc(struct pci_dev *dev,
629 const struct ide_port_info *d)
631 unsigned long ctl_base;
632 unsigned long dma_base;
633 unsigned long cckctrl_port;
634 unsigned long intmask_port;
635 unsigned long mode_port;
636 unsigned long ecmode_port;
637 unsigned long dma_status_port;
639 struct scc_ports *ports;
642 rc = pci_enable_device(dev);
646 rc = setup_mmio_scc(dev, d->name);
650 ports = pci_get_drvdata(dev);
651 ctl_base = ports->ctl;
652 dma_base = ports->dma;
653 cckctrl_port = ctl_base + 0xff0;
654 intmask_port = dma_base + 0x010;
655 mode_port = ctl_base + 0x024;
656 ecmode_port = ctl_base + 0xf00;
657 dma_status_port = dma_base + 0x004;
659 /* controller initialization */
661 out_be32((void*)cckctrl_port, reg);
662 reg |= CCKCTRL_ATACLKOEN;
663 out_be32((void*)cckctrl_port, reg);
664 reg |= CCKCTRL_LCLKEN | CCKCTRL_OCLKEN;
665 out_be32((void*)cckctrl_port, reg);
667 out_be32((void*)cckctrl_port, reg);
670 reg = in_be32((void*)cckctrl_port);
671 if (reg & CCKCTRL_CRST)
676 reg |= CCKCTRL_ATARESET;
677 out_be32((void*)cckctrl_port, reg);
679 out_be32((void*)ecmode_port, ECMODE_VALUE);
680 out_be32((void*)mode_port, MODE_JCUSFEN);
681 out_be32((void*)intmask_port, INTMASK_MSK);
683 rc = scc_ide_setup_pci_device(dev, d);
689 static void scc_tf_load(ide_drive_t *drive, ide_task_t *task)
691 struct ide_io_ports *io_ports = &drive->hwif->io_ports;
692 struct ide_taskfile *tf = &task->tf;
693 u8 HIHI = (task->tf_flags & IDE_TFLAG_LBA48) ? 0xE0 : 0xEF;
695 if (task->tf_flags & IDE_TFLAG_FLAGGED)
698 if (task->tf_flags & IDE_TFLAG_OUT_DATA)
699 out_be32((void *)io_ports->data_addr,
700 (tf->hob_data << 8) | tf->data);
702 if (task->tf_flags & IDE_TFLAG_OUT_HOB_FEATURE)
703 scc_ide_outb(tf->hob_feature, io_ports->feature_addr);
704 if (task->tf_flags & IDE_TFLAG_OUT_HOB_NSECT)
705 scc_ide_outb(tf->hob_nsect, io_ports->nsect_addr);
706 if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAL)
707 scc_ide_outb(tf->hob_lbal, io_ports->lbal_addr);
708 if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAM)
709 scc_ide_outb(tf->hob_lbam, io_ports->lbam_addr);
710 if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAH)
711 scc_ide_outb(tf->hob_lbah, io_ports->lbah_addr);
713 if (task->tf_flags & IDE_TFLAG_OUT_FEATURE)
714 scc_ide_outb(tf->feature, io_ports->feature_addr);
715 if (task->tf_flags & IDE_TFLAG_OUT_NSECT)
716 scc_ide_outb(tf->nsect, io_ports->nsect_addr);
717 if (task->tf_flags & IDE_TFLAG_OUT_LBAL)
718 scc_ide_outb(tf->lbal, io_ports->lbal_addr);
719 if (task->tf_flags & IDE_TFLAG_OUT_LBAM)
720 scc_ide_outb(tf->lbam, io_ports->lbam_addr);
721 if (task->tf_flags & IDE_TFLAG_OUT_LBAH)
722 scc_ide_outb(tf->lbah, io_ports->lbah_addr);
724 if (task->tf_flags & IDE_TFLAG_OUT_DEVICE)
725 scc_ide_outb((tf->device & HIHI) | drive->select.all,
726 io_ports->device_addr);
729 static void scc_tf_read(ide_drive_t *drive, ide_task_t *task)
731 struct ide_io_ports *io_ports = &drive->hwif->io_ports;
732 struct ide_taskfile *tf = &task->tf;
734 if (task->tf_flags & IDE_TFLAG_IN_DATA) {
735 u16 data = (u16)in_be32((void *)io_ports->data_addr);
737 tf->data = data & 0xff;
738 tf->hob_data = (data >> 8) & 0xff;
741 /* be sure we're looking at the low order bits */
742 scc_ide_outb(ATA_DEVCTL_OBS & ~0x80, io_ports->ctl_addr);
744 if (task->tf_flags & IDE_TFLAG_IN_FEATURE)
745 tf->feature = scc_ide_inb(io_ports->feature_addr);
746 if (task->tf_flags & IDE_TFLAG_IN_NSECT)
747 tf->nsect = scc_ide_inb(io_ports->nsect_addr);
748 if (task->tf_flags & IDE_TFLAG_IN_LBAL)
749 tf->lbal = scc_ide_inb(io_ports->lbal_addr);
750 if (task->tf_flags & IDE_TFLAG_IN_LBAM)
751 tf->lbam = scc_ide_inb(io_ports->lbam_addr);
752 if (task->tf_flags & IDE_TFLAG_IN_LBAH)
753 tf->lbah = scc_ide_inb(io_ports->lbah_addr);
754 if (task->tf_flags & IDE_TFLAG_IN_DEVICE)
755 tf->device = scc_ide_inb(io_ports->device_addr);
757 if (task->tf_flags & IDE_TFLAG_LBA48) {
758 scc_ide_outb(ATA_DEVCTL_OBS | 0x80, io_ports->ctl_addr);
760 if (task->tf_flags & IDE_TFLAG_IN_HOB_FEATURE)
761 tf->hob_feature = scc_ide_inb(io_ports->feature_addr);
762 if (task->tf_flags & IDE_TFLAG_IN_HOB_NSECT)
763 tf->hob_nsect = scc_ide_inb(io_ports->nsect_addr);
764 if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAL)
765 tf->hob_lbal = scc_ide_inb(io_ports->lbal_addr);
766 if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAM)
767 tf->hob_lbam = scc_ide_inb(io_ports->lbam_addr);
768 if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAH)
769 tf->hob_lbah = scc_ide_inb(io_ports->lbah_addr);
773 static void scc_input_data(ide_drive_t *drive, struct request *rq,
774 void *buf, unsigned int len)
776 unsigned long data_addr = drive->hwif->io_ports.data_addr;
780 if (drive->io_32bit) {
781 scc_ide_insl(data_addr, buf, len / 4);
784 scc_ide_insw(data_addr, (u8 *)buf + (len & ~3), 1);
786 scc_ide_insw(data_addr, buf, len / 2);
789 static void scc_output_data(ide_drive_t *drive, struct request *rq,
790 void *buf, unsigned int len)
792 unsigned long data_addr = drive->hwif->io_ports.data_addr;
796 if (drive->io_32bit) {
797 scc_ide_outsl(data_addr, buf, len / 4);
800 scc_ide_outsw(data_addr, (u8 *)buf + (len & ~3), 1);
802 scc_ide_outsw(data_addr, buf, len / 2);
806 * init_mmio_iops_scc - set up the iops for MMIO
807 * @hwif: interface to set up
811 static void __devinit init_mmio_iops_scc(ide_hwif_t *hwif)
813 struct pci_dev *dev = to_pci_dev(hwif->dev);
814 struct scc_ports *ports = pci_get_drvdata(dev);
815 unsigned long dma_base = ports->dma;
817 ide_set_hwifdata(hwif, ports);
819 hwif->exec_command = scc_exec_command;
820 hwif->read_status = scc_read_status;
821 hwif->read_altstatus = scc_read_altstatus;
822 hwif->read_sff_dma_status = scc_read_sff_dma_status;
824 hwif->set_irq = scc_set_irq;
826 hwif->tf_load = scc_tf_load;
827 hwif->tf_read = scc_tf_read;
829 hwif->input_data = scc_input_data;
830 hwif->output_data = scc_output_data;
832 hwif->INB = scc_ide_inb;
833 hwif->OUTB = scc_ide_outb;
834 hwif->OUTBSYNC = scc_ide_outbsync;
836 hwif->dma_base = dma_base;
837 hwif->config_data = ports->ctl;
841 * init_iops_scc - set up iops
842 * @hwif: interface to set up
844 * Do the basic setup for the SCC hardware interface
845 * and then do the MMIO setup.
848 static void __devinit init_iops_scc(ide_hwif_t *hwif)
850 struct pci_dev *dev = to_pci_dev(hwif->dev);
852 hwif->hwif_data = NULL;
853 if (pci_get_drvdata(dev) == NULL)
855 init_mmio_iops_scc(hwif);
858 static u8 __devinit scc_cable_detect(ide_hwif_t *hwif)
860 return ATA_CBL_PATA80;
864 * init_hwif_scc - set up hwif
865 * @hwif: interface to set up
867 * We do the basic set up of the interface structure. The SCC
868 * requires several custom handlers so we override the default
869 * ide DMA handlers appropriately.
872 static void __devinit init_hwif_scc(ide_hwif_t *hwif)
874 struct scc_ports *ports = ide_get_hwifdata(hwif);
879 out_be32((void __iomem *)(hwif->dma_base + 0x018), hwif->dmatable_dma);
881 if (in_be32((void __iomem *)(hwif->config_data + 0xff0)) & CCKCTRL_ATACLKOEN)
882 hwif->ultra_mask = ATA_UDMA6; /* 133MHz */
884 hwif->ultra_mask = ATA_UDMA5; /* 100MHz */
887 static const struct ide_port_ops scc_port_ops = {
888 .set_pio_mode = scc_set_pio_mode,
889 .set_dma_mode = scc_set_dma_mode,
890 .udma_filter = scc_udma_filter,
891 .cable_detect = scc_cable_detect,
894 static const struct ide_dma_ops scc_dma_ops = {
895 .dma_host_set = scc_dma_host_set,
896 .dma_setup = scc_dma_setup,
897 .dma_exec_cmd = ide_dma_exec_cmd,
898 .dma_start = scc_dma_start,
899 .dma_end = scc_dma_end,
900 .dma_test_irq = scc_dma_test_irq,
901 .dma_lost_irq = ide_dma_lost_irq,
902 .dma_timeout = ide_dma_timeout,
905 #define DECLARE_SCC_DEV(name_str) \
908 .init_iops = init_iops_scc, \
909 .init_hwif = init_hwif_scc, \
910 .port_ops = &scc_port_ops, \
911 .dma_ops = &scc_dma_ops, \
912 .host_flags = IDE_HFLAG_SINGLE, \
913 .pio_mask = ATA_PIO4, \
916 static const struct ide_port_info scc_chipsets[] __devinitdata = {
917 /* 0 */ DECLARE_SCC_DEV("sccIDE"),
921 * scc_init_one - pci layer discovery entry
923 * @id: ident table entry
925 * Called by the PCI code when it finds an SCC PATA controller.
926 * We then use the IDE PCI generic helper to do most of the work.
929 static int __devinit scc_init_one(struct pci_dev *dev, const struct pci_device_id *id)
931 return init_setup_scc(dev, &scc_chipsets[id->driver_data]);
935 * scc_remove - pci layer remove entry
938 * Called by the PCI code when it removes an SCC PATA controller.
941 static void __devexit scc_remove(struct pci_dev *dev)
943 struct scc_ports *ports = pci_get_drvdata(dev);
944 ide_hwif_t *hwif = ports->hwif;
946 if (hwif->dmatable_cpu) {
947 pci_free_consistent(dev, PRD_ENTRIES * PRD_BYTES,
948 hwif->dmatable_cpu, hwif->dmatable_dma);
949 hwif->dmatable_cpu = NULL;
952 ide_unregister(hwif);
954 iounmap((void*)ports->dma);
955 iounmap((void*)ports->ctl);
956 pci_release_selected_regions(dev, (1 << 2) - 1);
957 memset(ports, 0, sizeof(*ports));
960 static const struct pci_device_id scc_pci_tbl[] = {
961 { PCI_VDEVICE(TOSHIBA_2, PCI_DEVICE_ID_TOSHIBA_SCC_ATA), 0 },
964 MODULE_DEVICE_TABLE(pci, scc_pci_tbl);
966 static struct pci_driver driver = {
968 .id_table = scc_pci_tbl,
969 .probe = scc_init_one,
970 .remove = scc_remove,
973 static int scc_ide_init(void)
975 return ide_pci_register_driver(&driver);
978 module_init(scc_ide_init);
980 static void scc_ide_exit(void)
982 ide_pci_unregister_driver(&driver);
984 module_exit(scc_ide_exit);
988 MODULE_DESCRIPTION("PCI driver module for Toshiba SCC IDE");
989 MODULE_LICENSE("GPL");