ide: remove the legacy ide driver

The legay ide driver has been replace with libata starting in 2003 and has
been scheduled for removal for a while.  Finally kill it off so that we
can start cleaning up various bits of cruft it forced on the block layer.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

1 files changed, 0 insertions, 682 deletions

diff --git a/drivers/ide/setup-pci.c b/drivers/ide/setup-pci.c
deleted file mode 100644
index fdc8e813170c..000000000000
--- a/drivers/ide/setup-pci.c
+++ /dev/null
@@ -1,682 +0,0 @@
-/*
- *  Copyright (C) 1998-2000  Andre Hedrick <andre@linux-ide.org>
- *  Copyright (C) 1995-1998  Mark Lord
- *  Copyright (C) 2007-2009  Bartlomiej Zolnierkiewicz
- *
- *  May be copied or modified under the terms of the GNU General Public License
- */
-
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/export.h>
-#include <linux/pci.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/ide.h>
-#include <linux/dma-mapping.h>
-
-#include <asm/io.h>
-
-/**
- *	ide_setup_pci_baseregs	-	place a PCI IDE controller native
- *	@dev: PCI device of interface to switch native
- *	@name: Name of interface
- *
- *	We attempt to place the PCI interface into PCI native mode. If
- *	we succeed the BARs are ok and the controller is in PCI mode.
- *	Returns 0 on success or an errno code.
- *
- *	FIXME: if we program the interface and then fail to set the BARS
- *	we don't switch it back to legacy mode. Do we actually care ??
- */
-
-static int ide_setup_pci_baseregs(struct pci_dev *dev, const char *name)
-{
-	u8 progif = 0;
-
-	/*
-	 * Place both IDE interfaces into PCI "native" mode:
-	 */
-	if (pci_read_config_byte(dev, PCI_CLASS_PROG, &progif) ||
-			 (progif & 5) != 5) {
-		if ((progif & 0xa) != 0xa) {
-			printk(KERN_INFO "%s %s: device not capable of full "
-				"native PCI mode\n", name, pci_name(dev));
-			return -EOPNOTSUPP;
-		}
-		printk(KERN_INFO "%s %s: placing both ports into native PCI "
-			"mode\n", name, pci_name(dev));
-		(void) pci_write_config_byte(dev, PCI_CLASS_PROG, progif|5);
-		if (pci_read_config_byte(dev, PCI_CLASS_PROG, &progif) ||
-		    (progif & 5) != 5) {
-			printk(KERN_ERR "%s %s: rewrite of PROGIF failed, "
-				"wanted 0x%04x, got 0x%04x\n",
-				name, pci_name(dev), progif | 5, progif);
-			return -EOPNOTSUPP;
-		}
-	}
-	return 0;
-}
-
-#ifdef CONFIG_BLK_DEV_IDEDMA_PCI
-static int ide_pci_clear_simplex(unsigned long dma_base, const char *name)
-{
-	u8 dma_stat = inb(dma_base + 2);
-
-	outb(dma_stat & 0x60, dma_base + 2);
-	dma_stat = inb(dma_base + 2);
-
-	return (dma_stat & 0x80) ? 1 : 0;
-}
-
-/**
- *	ide_pci_dma_base	-	setup BMIBA
- *	@hwif: IDE interface
- *	@d: IDE port info
- *
- *	Fetch the DMA Bus-Master-I/O-Base-Address (BMIBA) from PCI space.
- */
-
-unsigned long ide_pci_dma_base(ide_hwif_t *hwif, const struct ide_port_info *d)
-{
-	struct pci_dev *dev = to_pci_dev(hwif->dev);
-	unsigned long dma_base = 0;
-
-	if (hwif->host_flags & IDE_HFLAG_MMIO)
-		return hwif->dma_base;
-
-	if (hwif->mate && hwif->mate->dma_base) {
-		dma_base = hwif->mate->dma_base - (hwif->channel ? 0 : 8);
-	} else {
-		u8 baridx = (d->host_flags & IDE_HFLAG_CS5520) ? 2 : 4;
-
-		dma_base = pci_resource_start(dev, baridx);
-
-		if (dma_base == 0) {
-			printk(KERN_ERR "%s %s: DMA base is invalid\n",
-				d->name, pci_name(dev));
-			return 0;
-		}
-	}
-
-	if (hwif->channel)
-		dma_base += 8;
-
-	return dma_base;
-}
-EXPORT_SYMBOL_GPL(ide_pci_dma_base);
-
-int ide_pci_check_simplex(ide_hwif_t *hwif, const struct ide_port_info *d)
-{
-	struct pci_dev *dev = to_pci_dev(hwif->dev);
-	u8 dma_stat;
-
-	if (d->host_flags & (IDE_HFLAG_MMIO | IDE_HFLAG_CS5520))
-		goto out;
-
-	if (d->host_flags & IDE_HFLAG_CLEAR_SIMPLEX) {
-		if (ide_pci_clear_simplex(hwif->dma_base, d->name))
-			printk(KERN_INFO "%s %s: simplex device: DMA forced\n",
-				d->name, pci_name(dev));
-		goto out;
-	}
-
-	/*
-	 * If the device claims "simplex" DMA, this means that only one of
-	 * the two interfaces can be trusted with DMA at any point in time
-	 * (so we should enable DMA only on one of the two interfaces).
-	 *
-	 * FIXME: At this point we haven't probed the drives so we can't make
-	 * the appropriate decision.  Really we should defer this problem until
-	 * we tune the drive then try to grab DMA ownership if we want to be
-	 * the DMA end.  This has to be become dynamic to handle hot-plug.
-	 */
-	dma_stat = hwif->dma_ops->dma_sff_read_status(hwif);
-	if ((dma_stat & 0x80) && hwif->mate && hwif->mate->dma_base) {
-		printk(KERN_INFO "%s %s: simplex device: DMA disabled\n",
-			d->name, pci_name(dev));
-		return -1;
-	}
-out:
-	return 0;
-}
-EXPORT_SYMBOL_GPL(ide_pci_check_simplex);
-
-/*
- * Set up BM-DMA capability (PnP BIOS should have done this)
- */
-int ide_pci_set_master(struct pci_dev *dev, const char *name)
-{
-	u16 pcicmd;
-
-	pci_read_config_word(dev, PCI_COMMAND, &pcicmd);
-
-	if ((pcicmd & PCI_COMMAND_MASTER) == 0) {
-		pci_set_master(dev);
-
-		if (pci_read_config_word(dev, PCI_COMMAND, &pcicmd) ||
-		    (pcicmd & PCI_COMMAND_MASTER) == 0) {
-			printk(KERN_ERR "%s %s: error updating PCICMD\n",
-				name, pci_name(dev));
-			return -EIO;
-		}
-	}
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(ide_pci_set_master);
-#endif /* CONFIG_BLK_DEV_IDEDMA_PCI */
-
-void ide_setup_pci_noise(struct pci_dev *dev, const struct ide_port_info *d)
-{
-	printk(KERN_INFO "%s %s: IDE controller (0x%04x:0x%04x rev 0x%02x)\n",
-		d->name, pci_name(dev),
-		dev->vendor, dev->device, dev->revision);
-}
-EXPORT_SYMBOL_GPL(ide_setup_pci_noise);
-
-
-/**
- *	ide_pci_enable	-	do PCI enables
- *	@dev: PCI device
- *	@bars: PCI BARs mask
- *	@d: IDE port info
- *
- *	Enable the IDE PCI device. We attempt to enable the device in full
- *	but if that fails then we only need IO space. The PCI code should
- *	have setup the proper resources for us already for controllers in
- *	legacy mode.
- *
- *	Returns zero on success or an error code
- */
-
-static int ide_pci_enable(struct pci_dev *dev, int bars,
-			  const struct ide_port_info *d)
-{
-	int ret;
-
-	if (pci_enable_device(dev)) {
-		ret = pci_enable_device_io(dev);
-		if (ret < 0) {
-			printk(KERN_WARNING "%s %s: couldn't enable device\n",
-				d->name, pci_name(dev));
-			goto out;
-		}
-		printk(KERN_WARNING "%s %s: BIOS configuration fixed\n",
-			d->name, pci_name(dev));
-	}
-
-	/*
-	 * assume all devices can do 32-bit DMA for now, we can add
-	 * a DMA mask field to the struct ide_port_info if we need it
-	 * (or let lower level driver set the DMA mask)
-	 */
-	ret = dma_set_mask(&dev->dev, DMA_BIT_MASK(32));
-	if (ret < 0) {
-		printk(KERN_ERR "%s %s: can't set DMA mask\n",
-			d->name, pci_name(dev));
-		goto out;
-	}
-
-	ret = pci_request_selected_regions(dev, bars, d->name);
-	if (ret < 0)
-		printk(KERN_ERR "%s %s: can't reserve resources\n",
-			d->name, pci_name(dev));
-out:
-	return ret;
-}
-
-/**
- *	ide_pci_configure	-	configure an unconfigured device
- *	@dev: PCI device
- *	@d: IDE port info
- *
- *	Enable and configure the PCI device we have been passed.
- *	Returns zero on success or an error code.
- */
-
-static int ide_pci_configure(struct pci_dev *dev, const struct ide_port_info *d)
-{
-	u16 pcicmd = 0;
-	/*
-	 * PnP BIOS was *supposed* to have setup this device, but we
-	 * can do it ourselves, so long as the BIOS has assigned an IRQ
-	 * (or possibly the device is using a "legacy header" for IRQs).
-	 * Maybe the user deliberately *disabled* the device,
-	 * but we'll eventually ignore it again if no drives respond.
-	 */
-	if (ide_setup_pci_baseregs(dev, d->name) ||
-	    pci_write_config_word(dev, PCI_COMMAND, pcicmd | PCI_COMMAND_IO)) {
-		printk(KERN_INFO "%s %s: device disabled (BIOS)\n",
-			d->name, pci_name(dev));
-		return -ENODEV;
-	}
-	if (pci_read_config_word(dev, PCI_COMMAND, &pcicmd)) {
-		printk(KERN_ERR "%s %s: error accessing PCI regs\n",
-			d->name, pci_name(dev));
-		return -EIO;
-	}
-	if (!(pcicmd & PCI_COMMAND_IO)) {
-		printk(KERN_ERR "%s %s: unable to enable IDE controller\n",
-			d->name, pci_name(dev));
-		return -ENXIO;
-	}
-	return 0;
-}
-
-/**
- *	ide_pci_check_iomem	-	check a register is I/O
- *	@dev: PCI device
- *	@d: IDE port info
- *	@bar: BAR number
- *
- *	Checks if a BAR is configured and points to MMIO space. If so,
- *	return an error code. Otherwise return 0
- */
-
-static int ide_pci_check_iomem(struct pci_dev *dev, const struct ide_port_info *d,
-			       int bar)
-{
-	ulong flags = pci_resource_flags(dev, bar);
-
-	/* Unconfigured ? */
-	if (!flags || pci_resource_len(dev, bar) == 0)
-		return 0;
-
-	/* I/O space */
-	if (flags & IORESOURCE_IO)
-		return 0;
-
-	/* Bad */
-	return -EINVAL;
-}
-
-/**
- *	ide_hw_configure	-	configure a struct ide_hw instance
- *	@dev: PCI device holding interface
- *	@d: IDE port info
- *	@port: port number
- *	@hw: struct ide_hw instance corresponding to this port
- *
- *	Perform the initial set up for the hardware interface structure. This
- *	is done per interface port rather than per PCI device. There may be
- *	more than one port per device.
- *
- *	Returns zero on success or an error code.
- */
-
-static int ide_hw_configure(struct pci_dev *dev, const struct ide_port_info *d,
-			    unsigned int port, struct ide_hw *hw)
-{
-	unsigned long ctl = 0, base = 0;
-
-	if ((d->host_flags & IDE_HFLAG_ISA_PORTS) == 0) {
-		if (ide_pci_check_iomem(dev, d, 2 * port) ||
-		    ide_pci_check_iomem(dev, d, 2 * port + 1)) {
-			printk(KERN_ERR "%s %s: I/O baseregs (BIOS) are "
-				"reported as MEM for port %d!\n",
-				d->name, pci_name(dev), port);
-			return -EINVAL;
-		}
-
-		ctl  = pci_resource_start(dev, 2*port+1);
-		base = pci_resource_start(dev, 2*port);
-	} else {
-		/* Use default values */
-		ctl = port ? 0x374 : 0x3f4;
-		base = port ? 0x170 : 0x1f0;
-	}
-
-	if (!base || !ctl) {
-		printk(KERN_ERR "%s %s: bad PCI BARs for port %d, skipping\n",
-			d->name, pci_name(dev), port);
-		return -EINVAL;
-	}
-
-	memset(hw, 0, sizeof(*hw));
-	hw->dev = &dev->dev;
-	ide_std_init_ports(hw, base, ctl | 2);
-
-	return 0;
-}
-
-#ifdef CONFIG_BLK_DEV_IDEDMA_PCI
-/**
- *	ide_hwif_setup_dma	-	configure DMA interface
- *	@hwif: IDE interface
- *	@d: IDE port info
- *
- *	Set up the DMA base for the interface. Enable the master bits as
- *	necessary and attempt to bring the device DMA into a ready to use
- *	state
- */
-
-int ide_hwif_setup_dma(ide_hwif_t *hwif, const struct ide_port_info *d)
-{
-	struct pci_dev *dev = to_pci_dev(hwif->dev);
-
-	if ((d->host_flags & IDE_HFLAG_NO_AUTODMA) == 0 ||
-	    ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE &&
-	     (dev->class & 0x80))) {
-		unsigned long base = ide_pci_dma_base(hwif, d);
-
-		if (base == 0)
-			return -1;
-
-		hwif->dma_base = base;
-
-		if (hwif->dma_ops == NULL)
-			hwif->dma_ops = &sff_dma_ops;
-
-		if (ide_pci_check_simplex(hwif, d) < 0)
-			return -1;
-
-		if (ide_pci_set_master(dev, d->name) < 0)
-			return -1;
-
-		if (hwif->host_flags & IDE_HFLAG_MMIO)
-			printk(KERN_INFO "    %s: MMIO-DMA\n", hwif->name);
-		else
-			printk(KERN_INFO "    %s: BM-DMA at 0x%04lx-0x%04lx\n",
-					 hwif->name, base, base + 7);
-
-		hwif->extra_base = base + (hwif->channel ? 8 : 16);
-
-		if (ide_allocate_dma_engine(hwif))
-			return -1;
-	}
-
-	return 0;
-}
-#endif /* CONFIG_BLK_DEV_IDEDMA_PCI */
-
-/**
- *	ide_setup_pci_controller	-	set up IDE PCI
- *	@dev: PCI device
- *	@bars: PCI BARs mask
- *	@d: IDE port info
- *	@noisy: verbose flag
- *
- *	Set up the PCI and controller side of the IDE interface. This brings
- *	up the PCI side of the device, checks that the device is enabled
- *	and enables it if need be
- */
-
-static int ide_setup_pci_controller(struct pci_dev *dev, int bars,
-				    const struct ide_port_info *d, int noisy)
-{
-	int ret;
-	u16 pcicmd;
-
-	if (noisy)
-		ide_setup_pci_noise(dev, d);
-
-	ret = ide_pci_enable(dev, bars, d);
-	if (ret < 0)
-		goto out;
-
-	ret = pci_read_config_word(dev, PCI_COMMAND, &pcicmd);
-	if (ret < 0) {
-		printk(KERN_ERR "%s %s: error accessing PCI regs\n",
-			d->name, pci_name(dev));
-		goto out_free_bars;
-	}
-	if (!(pcicmd & PCI_COMMAND_IO)) {	/* is device disabled? */
-		ret = ide_pci_configure(dev, d);
-		if (ret < 0)
-			goto out_free_bars;
-		printk(KERN_INFO "%s %s: device enabled (Linux)\n",
-			d->name, pci_name(dev));
-	}
-
-	goto out;
-
-out_free_bars:
-	pci_release_selected_regions(dev, bars);
-out:
-	return ret;
-}
-
-/**
- *	ide_pci_setup_ports	-	configure ports/devices on PCI IDE
- *	@dev: PCI device
- *	@d: IDE port info
- *	@hw: struct ide_hw instances corresponding to this PCI IDE device
- *	@hws: struct ide_hw pointers table to update
- *
- *	Scan the interfaces attached to this device and do any
- *	necessary per port setup. Attach the devices and ask the
- *	generic DMA layer to do its work for us.
- *
- *	Normally called automaticall from do_ide_pci_setup_device,
- *	but is also used directly as a helper function by some controllers
- *	where the chipset setup is not the default PCI IDE one.
- */
-
-void ide_pci_setup_ports(struct pci_dev *dev, const struct ide_port_info *d,
-			 struct ide_hw *hw, struct ide_hw **hws)
-{
-	int channels = (d->host_flags & IDE_HFLAG_SINGLE) ? 1 : 2, port;
-	u8 tmp;
-
-	/*
-	 * Set up the IDE ports
-	 */
-
-	for (port = 0; port < channels; ++port) {
-		const struct ide_pci_enablebit *e = &d->enablebits[port];
-
-		if (e->reg && (pci_read_config_byte(dev, e->reg, &tmp) ||
-		    (tmp & e->mask) != e->val)) {
-			printk(KERN_INFO "%s %s: IDE port disabled\n",
-				d->name, pci_name(dev));
-			continue;	/* port not enabled */
-		}
-
-		if (ide_hw_configure(dev, d, port, hw + port))
-			continue;
-
-		*(hws + port) = hw + port;
-	}
-}
-EXPORT_SYMBOL_GPL(ide_pci_setup_ports);
-
-/*
- * ide_setup_pci_device() looks at the primary/secondary interfaces
- * on a PCI IDE device and, if they are enabled, prepares the IDE driver
- * for use with them.  This generic code works for most PCI chipsets.
- *
- * One thing that is not standardized is the location of the
- * primary/secondary interface "enable/disable" bits.  For chipsets that
- * we "know" about, this information is in the struct ide_port_info;
- * for all other chipsets, we just assume both interfaces are enabled.
- */
-static int do_ide_setup_pci_device(struct pci_dev *dev,
-				   const struct ide_port_info *d,
-				   u8 noisy)
-{
-	int pciirq, ret;
-
-	/*
-	 * Can we trust the reported IRQ?
-	 */
-	pciirq = dev->irq;
-
-	/*
-	 * This allows offboard ide-pci cards the enable a BIOS,
-	 * verify interrupt settings of split-mirror pci-config
-	 * space, place chipset into init-mode, and/or preserve
-	 * an interrupt if the card is not native ide support.
-	 */
-	ret = d->init_chipset ? d->init_chipset(dev) : 0;
-	if (ret < 0)
-		goto out;
-
-	if (ide_pci_is_in_compatibility_mode(dev)) {
-		if (noisy)
-			printk(KERN_INFO "%s %s: not 100%% native mode: will "
-				"probe irqs later\n", d->name, pci_name(dev));
-		pciirq = 0;
-	} else if (!pciirq && noisy) {
-		printk(KERN_WARNING "%s %s: bad irq (%d): will probe later\n",
-			d->name, pci_name(dev), pciirq);
-	} else if (noisy) {
-		printk(KERN_INFO "%s %s: 100%% native mode on irq %d\n",
-			d->name, pci_name(dev), pciirq);
-	}
-
-	ret = pciirq;
-out:
-	return ret;
-}
-
-int ide_pci_init_two(struct pci_dev *dev1, struct pci_dev *dev2,
-		     const struct ide_port_info *d, void *priv)
-{
-	struct pci_dev *pdev[] = { dev1, dev2 };
-	struct ide_host *host;
-	int ret, i, n_ports = dev2 ? 4 : 2, bars;
-	struct ide_hw hw[4], *hws[] = { NULL, NULL, NULL, NULL };
-
-	if (d->host_flags & IDE_HFLAG_SINGLE)
-		bars = (1 << 2) - 1;
-	else
-		bars = (1 << 4) - 1;
-
-	if ((d->host_flags & IDE_HFLAG_NO_DMA) == 0) {
-		if (d->host_flags & IDE_HFLAG_CS5520)
-			bars |= (1 << 2);
-		else
-			bars |= (1 << 4);
-	}
-
-	for (i = 0; i < n_ports / 2; i++) {
-		ret = ide_setup_pci_controller(pdev[i], bars, d, !i);
-		if (ret < 0) {
-			if (i == 1)
-				pci_release_selected_regions(pdev[0], bars);
-			goto out;
-		}
-
-		ide_pci_setup_ports(pdev[i], d, &hw[i*2], &hws[i*2]);
-	}
-
-	host = ide_host_alloc(d, hws, n_ports);
-	if (host == NULL) {
-		ret = -ENOMEM;
-		goto out_free_bars;
-	}
-
-	host->dev[0] = &dev1->dev;
-	if (dev2)
-		host->dev[1] = &dev2->dev;
-
-	host->host_priv = priv;
-	host->irq_flags = IRQF_SHARED;
-
-	pci_set_drvdata(pdev[0], host);
-	if (dev2)
-		pci_set_drvdata(pdev[1], host);
-
-	for (i = 0; i < n_ports / 2; i++) {
-		ret = do_ide_setup_pci_device(pdev[i], d, !i);
-
-		/*
-		 * FIXME: Mom, mom, they stole me the helper function to undo
-		 * do_ide_setup_pci_device() on the first device!
-		 */
-		if (ret < 0)
-			goto out_free_bars;
-
-		/* fixup IRQ */
-		if (ide_pci_is_in_compatibility_mode(pdev[i])) {
-			hw[i*2].irq = pci_get_legacy_ide_irq(pdev[i], 0);
-			hw[i*2 + 1].irq = pci_get_legacy_ide_irq(pdev[i], 1);
-		} else
-			hw[i*2 + 1].irq = hw[i*2].irq = ret;
-	}
-
-	ret = ide_host_register(host, d, hws);
-	if (ret)
-		ide_host_free(host);
-	else
-		goto out;
-
-out_free_bars:
-	i = n_ports / 2;
-	while (i--)
-		pci_release_selected_regions(pdev[i], bars);
-out:
-	return ret;
-}
-EXPORT_SYMBOL_GPL(ide_pci_init_two);
-
-int ide_pci_init_one(struct pci_dev *dev, const struct ide_port_info *d,
-		     void *priv)
-{
-	return ide_pci_init_two(dev, NULL, d, priv);
-}
-EXPORT_SYMBOL_GPL(ide_pci_init_one);
-
-void ide_pci_remove(struct pci_dev *dev)
-{
-	struct ide_host *host = pci_get_drvdata(dev);
-	struct pci_dev *dev2 = host->dev[1] ? to_pci_dev(host->dev[1]) : NULL;
-	int bars;
-
-	if (host->host_flags & IDE_HFLAG_SINGLE)
-		bars = (1 << 2) - 1;
-	else
-		bars = (1 << 4) - 1;
-
-	if ((host->host_flags & IDE_HFLAG_NO_DMA) == 0) {
-		if (host->host_flags & IDE_HFLAG_CS5520)
-			bars |= (1 << 2);
-		else
-			bars |= (1 << 4);
-	}
-
-	ide_host_remove(host);
-
-	if (dev2)
-		pci_release_selected_regions(dev2, bars);
-	pci_release_selected_regions(dev, bars);
-
-	if (dev2)
-		pci_disable_device(dev2);
-	pci_disable_device(dev);
-}
-EXPORT_SYMBOL_GPL(ide_pci_remove);
-
-#ifdef CONFIG_PM
-int ide_pci_suspend(struct pci_dev *dev, pm_message_t state)
-{
-	pci_save_state(dev);
-	pci_disable_device(dev);
-	pci_set_power_state(dev, pci_choose_state(dev, state));
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(ide_pci_suspend);
-
-int ide_pci_resume(struct pci_dev *dev)
-{
-	struct ide_host *host = pci_get_drvdata(dev);
-	int rc;
-
-	pci_set_power_state(dev, PCI_D0);
-
-	rc = pci_enable_device(dev);
-	if (rc)
-		return rc;
-
-	pci_restore_state(dev);
-	pci_set_master(dev);
-
-	if (host->init_chipset)
-		host->init_chipset(dev);
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(ide_pci_resume);
-#endif