2  *  Copyright (C) 1998-2000  Andre Hedrick <andre@linux-ide.org>
3  *  Copyright (C) 1995-1998  Mark Lord
4  *  Copyright (C) 2007-2009  Bartlomiej Zolnierkiewicz
15 #include <linux/ide.h>
16 #include <linux/dma-mapping.h>
21  *	ide_setup_pci_baseregs	-	place a PCI IDE controller native
38 	 * Place both IDE interfaces into PCI "native" mode:  in ide_setup_pci_baseregs()
45 			return -EOPNOTSUPP;  in ide_setup_pci_baseregs()
55 			return -EOPNOTSUPP;  in ide_setup_pci_baseregs()
73  *	ide_pci_dma_base	-	setup BMIBA
74  *	@hwif: IDE interface
75  *	@d: IDE port info
77  *	Fetch the DMA Bus-Master-I/O-Base-Address (BMIBA) from PCI space.
82 	struct pci_dev *dev = to_pci_dev(hwif->dev);  in ide_pci_dma_base()
85 	if (hwif->host_flags & IDE_HFLAG_MMIO)  in ide_pci_dma_base()
86 		return hwif->dma_base;  in ide_pci_dma_base()
88 	if (hwif->mate && hwif->mate->dma_base) {  in ide_pci_dma_base()
89 		dma_base = hwif->mate->dma_base - (hwif->channel ? 0 : 8);  in ide_pci_dma_base()
91 		u8 baridx = (d->host_flags & IDE_HFLAG_CS5520) ? 2 : 4;  in ide_pci_dma_base()
97 				d->name, pci_name(dev));  in ide_pci_dma_base()
102 	if (hwif->channel)  in ide_pci_dma_base()
111 	struct pci_dev *dev = to_pci_dev(hwif->dev);  in ide_pci_check_simplex()
114 	if (d->host_flags & (IDE_HFLAG_MMIO | IDE_HFLAG_CS5520))  in ide_pci_check_simplex()
117 	if (d->host_flags & IDE_HFLAG_CLEAR_SIMPLEX) {  in ide_pci_check_simplex()
118 		if (ide_pci_clear_simplex(hwif->dma_base, d->name))  in ide_pci_check_simplex()
120 				d->name, pci_name(dev));  in ide_pci_check_simplex()
132 	 * the DMA end.  This has to be become dynamic to handle hot-plug.  in ide_pci_check_simplex()
134 	dma_stat = hwif->dma_ops->dma_sff_read_status(hwif);  in ide_pci_check_simplex()
135 	if ((dma_stat & 0x80) && hwif->mate && hwif->mate->dma_base) {  in ide_pci_check_simplex()
137 			d->name, pci_name(dev));  in ide_pci_check_simplex()
138 		return -1;  in ide_pci_check_simplex()
146  * Set up BM-DMA capability (PnP BIOS should have done this)
161 			return -EIO;  in ide_pci_set_master()
172 	printk(KERN_INFO "%s %s: IDE controller (0x%04x:0x%04x rev 0x%02x)\n",  in ide_setup_pci_noise()
173 		d->name, pci_name(dev),  in ide_setup_pci_noise()
174 		dev->vendor, dev->device, dev->revision);  in ide_setup_pci_noise()
180  *	ide_pci_enable	-	do PCI enables
183  *	@d: IDE port info
185  *	Enable the IDE PCI device. We attempt to enable the device in full
202 				d->name, pci_name(dev));  in ide_pci_enable()
206 			d->name, pci_name(dev));  in ide_pci_enable()
210 	 * assume all devices can do 32-bit DMA for now, we can add  in ide_pci_enable()
214 	ret = dma_set_mask(&dev->dev, DMA_BIT_MASK(32));  in ide_pci_enable()
217 			d->name, pci_name(dev));  in ide_pci_enable()
221 	ret = pci_request_selected_regions(dev, bars, d->name);  in ide_pci_enable()
224 			d->name, pci_name(dev));  in ide_pci_enable()
230  *	ide_pci_configure	-	configure an unconfigured device
232  *	@d: IDE port info
248 	if (ide_setup_pci_baseregs(dev, d->name) ||  in ide_pci_configure()
251 			d->name, pci_name(dev));  in ide_pci_configure()
252 		return -ENODEV;  in ide_pci_configure()
256 			d->name, pci_name(dev));  in ide_pci_configure()
257 		return -EIO;  in ide_pci_configure()
260 		printk(KERN_ERR "%s %s: unable to enable IDE controller\n",  in ide_pci_configure()
261 			d->name, pci_name(dev));  in ide_pci_configure()
262 		return -ENXIO;  in ide_pci_configure()
268  *	ide_pci_check_iomem	-	check a register is I/O
270  *	@d: IDE port info
291 	return -EINVAL;  in ide_pci_check_iomem()
295  *	ide_hw_configure	-	configure a struct ide_hw instance
297  *	@d: IDE port info
298  *	@port: port number
299  *	@hw: struct ide_hw instance corresponding to this port
302  *	is done per interface port rather than per PCI device. There may be
303  *	more than one port per device.
309 			    unsigned int port, struct ide_hw *hw)  in ide_hw_configure()  argument
313 	if ((d->host_flags & IDE_HFLAG_ISA_PORTS) == 0) {  in ide_hw_configure()
314 		if (ide_pci_check_iomem(dev, d, 2 * port) ||  in ide_hw_configure()
315 		    ide_pci_check_iomem(dev, d, 2 * port + 1)) {  in ide_hw_configure()
317 				"reported as MEM for port %d!\n",  in ide_hw_configure()
318 				d->name, pci_name(dev), port);  in ide_hw_configure()
319 			return -EINVAL;  in ide_hw_configure()
322 		ctl  = pci_resource_start(dev, 2*port+1);  in ide_hw_configure()
323 		base = pci_resource_start(dev, 2*port);  in ide_hw_configure()
326 		ctl = port ? 0x374 : 0x3f4;  in ide_hw_configure()
327 		base = port ? 0x170 : 0x1f0;  in ide_hw_configure()
331 		printk(KERN_ERR "%s %s: bad PCI BARs for port %d, skipping\n",  in ide_hw_configure()
332 			d->name, pci_name(dev), port);  in ide_hw_configure()
333 		return -EINVAL;  in ide_hw_configure()
337 	hw->dev = &dev->dev;  in ide_hw_configure()
345  *	ide_hwif_setup_dma	-	configure DMA interface
346  *	@hwif: IDE interface
347  *	@d: IDE port info
356 	struct pci_dev *dev = to_pci_dev(hwif->dev);  in ide_hwif_setup_dma()
358 	if ((d->host_flags & IDE_HFLAG_NO_AUTODMA) == 0 ||  in ide_hwif_setup_dma()
359 	    ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE &&  in ide_hwif_setup_dma()
360 	     (dev->class & 0x80))) {  in ide_hwif_setup_dma()
364 			return -1;  in ide_hwif_setup_dma()
366 		hwif->dma_base = base;  in ide_hwif_setup_dma()
368 		if (hwif->dma_ops == NULL)  in ide_hwif_setup_dma()
369 			hwif->dma_ops = &sff_dma_ops;  in ide_hwif_setup_dma()
372 			return -1;  in ide_hwif_setup_dma()
374 		if (ide_pci_set_master(dev, d->name) < 0)  in ide_hwif_setup_dma()
375 			return -1;  in ide_hwif_setup_dma()
377 		if (hwif->host_flags & IDE_HFLAG_MMIO)  in ide_hwif_setup_dma()
378 			printk(KERN_INFO "    %s: MMIO-DMA\n", hwif->name);  in ide_hwif_setup_dma()
380 			printk(KERN_INFO "    %s: BM-DMA at 0x%04lx-0x%04lx\n",  in ide_hwif_setup_dma()
381 					 hwif->name, base, base + 7);  in ide_hwif_setup_dma()
383 		hwif->extra_base = base + (hwif->channel ? 8 : 16);  in ide_hwif_setup_dma()
386 			return -1;  in ide_hwif_setup_dma()
394  *	ide_setup_pci_controller	-	set up IDE PCI
397  *	@d: IDE port info
400  *	Set up the PCI and controller side of the IDE interface. This brings
421 			d->name, pci_name(dev));  in ide_setup_pci_controller()
429 			d->name, pci_name(dev));  in ide_setup_pci_controller()
441  *	ide_pci_setup_ports	-	configure ports/devices on PCI IDE
443  *	@d: IDE port info
444  *	@hw: struct ide_hw instances corresponding to this PCI IDE device
448  *	necessary per port setup. Attach the devices and ask the
453  *	where the chipset setup is not the default PCI IDE one.
459 	int channels = (d->host_flags & IDE_HFLAG_SINGLE) ? 1 : 2, port;  in ide_pci_setup_ports()  local
463 	 * Set up the IDE ports  in ide_pci_setup_ports()
466 	for (port = 0; port < channels; ++port) {  in ide_pci_setup_ports()
467 		const struct ide_pci_enablebit *e = &d->enablebits[port];  in ide_pci_setup_ports()
469 		if (e->reg && (pci_read_config_byte(dev, e->reg, &tmp) ||  in ide_pci_setup_ports()
470 		    (tmp & e->mask) != e->val)) {  in ide_pci_setup_ports()
471 			printk(KERN_INFO "%s %s: IDE port disabled\n",  in ide_pci_setup_ports()
472 				d->name, pci_name(dev));  in ide_pci_setup_ports()
473 			continue;	/* port not enabled */  in ide_pci_setup_ports()
476 		if (ide_hw_configure(dev, d, port, hw + port))  in ide_pci_setup_ports()
479 		*(hws + port) = hw + port;  in ide_pci_setup_ports()
486  * on a PCI IDE device and, if they are enabled, prepares the IDE driver
503 	pciirq = dev->irq;  in do_ide_setup_pci_device()
506 	 * This allows offboard ide-pci cards the enable a BIOS,  in do_ide_setup_pci_device()
507 	 * verify interrupt settings of split-mirror pci-config  in do_ide_setup_pci_device()
508 	 * space, place chipset into init-mode, and/or preserve  in do_ide_setup_pci_device()
509 	 * an interrupt if the card is not native ide support.  in do_ide_setup_pci_device()
511 	ret = d->init_chipset ? d->init_chipset(dev) : 0;  in do_ide_setup_pci_device()
518 				"probe irqs later\n", d->name, pci_name(dev));  in do_ide_setup_pci_device()
522 			d->name, pci_name(dev), pciirq);  in do_ide_setup_pci_device()
525 			d->name, pci_name(dev), pciirq);  in do_ide_setup_pci_device()
541 	if (d->host_flags & IDE_HFLAG_SINGLE)  in ide_pci_init_two()
542 		bars = (1 << 2) - 1;  in ide_pci_init_two()
544 		bars = (1 << 4) - 1;  in ide_pci_init_two()
546 	if ((d->host_flags & IDE_HFLAG_NO_DMA) == 0) {  in ide_pci_init_two()
547 		if (d->host_flags & IDE_HFLAG_CS5520)  in ide_pci_init_two()
566 		ret = -ENOMEM;  in ide_pci_init_two()
570 	host->dev[0] = &dev1->dev;  in ide_pci_init_two()
572 		host->dev[1] = &dev2->dev;  in ide_pci_init_two()
574 	host->host_priv = priv;  in ide_pci_init_two()
575 	host->irq_flags = IRQF_SHARED;  in ide_pci_init_two()
607 	while (i--)  in ide_pci_init_two()
624 	struct pci_dev *dev2 = host->dev[1] ? to_pci_dev(host->dev[1]) : NULL;  in ide_pci_remove()
627 	if (host->host_flags & IDE_HFLAG_SINGLE)  in ide_pci_remove()
628 		bars = (1 << 2) - 1;  in ide_pci_remove()
630 		bars = (1 << 4) - 1;  in ide_pci_remove()
632 	if ((host->host_flags & IDE_HFLAG_NO_DMA) == 0) {  in ide_pci_remove()
633 		if (host->host_flags & IDE_HFLAG_CS5520)  in ide_pci_remove()
676 	if (host->init_chipset)  in ide_pci_resume()
677 		host->init_chipset(dev);  in ide_pci_resume()