Move libata to drivers/ata.

1 files changed, 0 insertions, 508 deletions

diff --git a/drivers/scsi/sata_svw.c b/drivers/scsi/sata_svw.c
deleted file mode 100644
index baf259a966d0..000000000000
--- a/drivers/scsi/sata_svw.c
+++ /dev/null
@@ -1,508 +0,0 @@
-/*
- *  sata_svw.c - ServerWorks / Apple K2 SATA
- *
- *  Maintained by: Benjamin Herrenschmidt <benh@kernel.crashing.org> and
- *		   Jeff Garzik <jgarzik@pobox.com>
- *  		    Please ALWAYS copy linux-ide@vger.kernel.org
- *		    on emails.
- *
- *  Copyright 2003 Benjamin Herrenschmidt <benh@kernel.crashing.org>
- *
- *  Bits from Jeff Garzik, Copyright RedHat, Inc.
- *
- *  This driver probably works with non-Apple versions of the
- *  Broadcom chipset...
- *
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 2, or (at your option)
- *  any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; see the file COPYING.  If not, write to
- *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- *
- *  libata documentation is available via 'make {ps|pdf}docs',
- *  as Documentation/DocBook/libata.*
- *
- *  Hardware documentation available under NDA.
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/pci.h>
-#include <linux/init.h>
-#include <linux/blkdev.h>
-#include <linux/delay.h>
-#include <linux/interrupt.h>
-#include <linux/device.h>
-#include <scsi/scsi_host.h>
-#include <linux/libata.h>
-
-#ifdef CONFIG_PPC_OF
-#include <asm/prom.h>
-#include <asm/pci-bridge.h>
-#endif /* CONFIG_PPC_OF */
-
-#define DRV_NAME	"sata_svw"
-#define DRV_VERSION	"2.0"
-
-enum {
-	/* Taskfile registers offsets */
-	K2_SATA_TF_CMD_OFFSET		= 0x00,
-	K2_SATA_TF_DATA_OFFSET		= 0x00,
-	K2_SATA_TF_ERROR_OFFSET		= 0x04,
-	K2_SATA_TF_NSECT_OFFSET		= 0x08,
-	K2_SATA_TF_LBAL_OFFSET		= 0x0c,
-	K2_SATA_TF_LBAM_OFFSET		= 0x10,
-	K2_SATA_TF_LBAH_OFFSET		= 0x14,
-	K2_SATA_TF_DEVICE_OFFSET	= 0x18,
-	K2_SATA_TF_CMDSTAT_OFFSET      	= 0x1c,
-	K2_SATA_TF_CTL_OFFSET		= 0x20,
-
-	/* DMA base */
-	K2_SATA_DMA_CMD_OFFSET		= 0x30,
-
-	/* SCRs base */
-	K2_SATA_SCR_STATUS_OFFSET	= 0x40,
-	K2_SATA_SCR_ERROR_OFFSET	= 0x44,
-	K2_SATA_SCR_CONTROL_OFFSET	= 0x48,
-
-	/* Others */
-	K2_SATA_SICR1_OFFSET		= 0x80,
-	K2_SATA_SICR2_OFFSET		= 0x84,
-	K2_SATA_SIM_OFFSET		= 0x88,
-
-	/* Port stride */
-	K2_SATA_PORT_OFFSET		= 0x100,
-};
-
-static u8 k2_stat_check_status(struct ata_port *ap);
-
-
-static u32 k2_sata_scr_read (struct ata_port *ap, unsigned int sc_reg)
-{
-	if (sc_reg > SCR_CONTROL)
-		return 0xffffffffU;
-	return readl((void *) ap->ioaddr.scr_addr + (sc_reg * 4));
-}
-
-
-static void k2_sata_scr_write (struct ata_port *ap, unsigned int sc_reg,
-			       u32 val)
-{
-	if (sc_reg > SCR_CONTROL)
-		return;
-	writel(val, (void *) ap->ioaddr.scr_addr + (sc_reg * 4));
-}
-
-
-static void k2_sata_tf_load(struct ata_port *ap, const struct ata_taskfile *tf)
-{
-	struct ata_ioports *ioaddr = &ap->ioaddr;
-	unsigned int is_addr = tf->flags & ATA_TFLAG_ISADDR;
-
-	if (tf->ctl != ap->last_ctl) {
-		writeb(tf->ctl, ioaddr->ctl_addr);
-		ap->last_ctl = tf->ctl;
-		ata_wait_idle(ap);
-	}
-	if (is_addr && (tf->flags & ATA_TFLAG_LBA48)) {
-		writew(tf->feature | (((u16)tf->hob_feature) << 8), ioaddr->feature_addr);
-		writew(tf->nsect | (((u16)tf->hob_nsect) << 8), ioaddr->nsect_addr);
-		writew(tf->lbal | (((u16)tf->hob_lbal) << 8), ioaddr->lbal_addr);
-		writew(tf->lbam | (((u16)tf->hob_lbam) << 8), ioaddr->lbam_addr);
-		writew(tf->lbah | (((u16)tf->hob_lbah) << 8), ioaddr->lbah_addr);
-	} else if (is_addr) {
-		writew(tf->feature, ioaddr->feature_addr);
-		writew(tf->nsect, ioaddr->nsect_addr);
-		writew(tf->lbal, ioaddr->lbal_addr);
-		writew(tf->lbam, ioaddr->lbam_addr);
-		writew(tf->lbah, ioaddr->lbah_addr);
-	}
-
-	if (tf->flags & ATA_TFLAG_DEVICE)
-		writeb(tf->device, ioaddr->device_addr);
-
-	ata_wait_idle(ap);
-}
-
-
-static void k2_sata_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
-{
-	struct ata_ioports *ioaddr = &ap->ioaddr;
-	u16 nsect, lbal, lbam, lbah, feature;
-
-	tf->command = k2_stat_check_status(ap);
-	tf->device = readw(ioaddr->device_addr);
-	feature = readw(ioaddr->error_addr);
-	nsect = readw(ioaddr->nsect_addr);
-	lbal = readw(ioaddr->lbal_addr);
-	lbam = readw(ioaddr->lbam_addr);
-	lbah = readw(ioaddr->lbah_addr);
-
-	tf->feature = feature;
-	tf->nsect = nsect;
-	tf->lbal = lbal;
-	tf->lbam = lbam;
-	tf->lbah = lbah;
-
-	if (tf->flags & ATA_TFLAG_LBA48) {
-		tf->hob_feature = feature >> 8;
-		tf->hob_nsect = nsect >> 8;
-		tf->hob_lbal = lbal >> 8;
-		tf->hob_lbam = lbam >> 8;
-		tf->hob_lbah = lbah >> 8;
-        }
-}
-
-/**
- *	k2_bmdma_setup_mmio - Set up PCI IDE BMDMA transaction (MMIO)
- *	@qc: Info associated with this ATA transaction.
- *
- *	LOCKING:
- *	spin_lock_irqsave(host_set lock)
- */
-
-static void k2_bmdma_setup_mmio (struct ata_queued_cmd *qc)
-{
-	struct ata_port *ap = qc->ap;
-	unsigned int rw = (qc->tf.flags & ATA_TFLAG_WRITE);
-	u8 dmactl;
-	void *mmio = (void *) ap->ioaddr.bmdma_addr;
-	/* load PRD table addr. */
-	mb();	/* make sure PRD table writes are visible to controller */
-	writel(ap->prd_dma, mmio + ATA_DMA_TABLE_OFS);
-
-	/* specify data direction, triple-check start bit is clear */
-	dmactl = readb(mmio + ATA_DMA_CMD);
-	dmactl &= ~(ATA_DMA_WR | ATA_DMA_START);
-	if (!rw)
-		dmactl |= ATA_DMA_WR;
-	writeb(dmactl, mmio + ATA_DMA_CMD);
-
-	/* issue r/w command if this is not a ATA DMA command*/
-	if (qc->tf.protocol != ATA_PROT_DMA)
-		ap->ops->exec_command(ap, &qc->tf);
-}
-
-/**
- *	k2_bmdma_start_mmio - Start a PCI IDE BMDMA transaction (MMIO)
- *	@qc: Info associated with this ATA transaction.
- *
- *	LOCKING:
- *	spin_lock_irqsave(host_set lock)
- */
-
-static void k2_bmdma_start_mmio (struct ata_queued_cmd *qc)
-{
-	struct ata_port *ap = qc->ap;
-	void *mmio = (void *) ap->ioaddr.bmdma_addr;
-	u8 dmactl;
-
-	/* start host DMA transaction */
-	dmactl = readb(mmio + ATA_DMA_CMD);
-	writeb(dmactl | ATA_DMA_START, mmio + ATA_DMA_CMD);
-	/* There is a race condition in certain SATA controllers that can
-	   be seen when the r/w command is given to the controller before the
-	   host DMA is started. On a Read command, the controller would initiate
-	   the command to the drive even before it sees the DMA start. When there
-	   are very fast drives connected to the controller, or when the data request
-	   hits in the drive cache, there is the possibility that the drive returns a part
-	   or all of the requested data to the controller before the DMA start is issued.
-	   In this case, the controller would become confused as to what to do with the data.
-	   In the worst case when all the data is returned back to the controller, the
-	   controller could hang. In other cases it could return partial data returning
-	   in data corruption. This problem has been seen in PPC systems and can also appear
-	   on an system with very fast disks, where the SATA controller is sitting behind a
-	   number of bridges, and hence there is significant latency between the r/w command
-	   and the start command. */
-	/* issue r/w command if the access is to ATA*/
-	if (qc->tf.protocol == ATA_PROT_DMA)
-		ap->ops->exec_command(ap, &qc->tf);
-}
-
-
-static u8 k2_stat_check_status(struct ata_port *ap)
-{
-       	return readl((void *) ap->ioaddr.status_addr);
-}
-
-#ifdef CONFIG_PPC_OF
-/*
- * k2_sata_proc_info
- * inout : decides on the direction of the dataflow and the meaning of the
- *	   variables
- * buffer: If inout==FALSE data is being written to it else read from it
- * *start: If inout==FALSE start of the valid data in the buffer
- * offset: If inout==FALSE offset from the beginning of the imaginary file
- *	   from which we start writing into the buffer
- * length: If inout==FALSE max number of bytes to be written into the buffer
- *	   else number of bytes in the buffer
- */
-static int k2_sata_proc_info(struct Scsi_Host *shost, char *page, char **start,
-			     off_t offset, int count, int inout)
-{
-	struct ata_port *ap;
-	struct device_node *np;
-	int len, index;
-
-	/* Find  the ata_port */
-	ap = ata_shost_to_port(shost);
-	if (ap == NULL)
-		return 0;
-
-	/* Find the OF node for the PCI device proper */
-	np = pci_device_to_OF_node(to_pci_dev(ap->host_set->dev));
-	if (np == NULL)
-		return 0;
-
-	/* Match it to a port node */
-	index = (ap == ap->host_set->ports[0]) ? 0 : 1;
-	for (np = np->child; np != NULL; np = np->sibling) {
-		u32 *reg = (u32 *)get_property(np, "reg", NULL);
-		if (!reg)
-			continue;
-		if (index == *reg)
-			break;
-	}
-	if (np == NULL)
-		return 0;
-
-	len = sprintf(page, "devspec: %s\n", np->full_name);
-
-	return len;
-}
-#endif /* CONFIG_PPC_OF */
-
-
-static struct scsi_host_template k2_sata_sht = {
-	.module			= THIS_MODULE,
-	.name			= DRV_NAME,
-	.ioctl			= ata_scsi_ioctl,
-	.queuecommand		= ata_scsi_queuecmd,
-	.can_queue		= ATA_DEF_QUEUE,
-	.this_id		= ATA_SHT_THIS_ID,
-	.sg_tablesize		= LIBATA_MAX_PRD,
-	.cmd_per_lun		= ATA_SHT_CMD_PER_LUN,
-	.emulated		= ATA_SHT_EMULATED,
-	.use_clustering		= ATA_SHT_USE_CLUSTERING,
-	.proc_name		= DRV_NAME,
-	.dma_boundary		= ATA_DMA_BOUNDARY,
-	.slave_configure	= ata_scsi_slave_config,
-	.slave_destroy		= ata_scsi_slave_destroy,
-#ifdef CONFIG_PPC_OF
-	.proc_info		= k2_sata_proc_info,
-#endif
-	.bios_param		= ata_std_bios_param,
-};
-
-
-static const struct ata_port_operations k2_sata_ops = {
-	.port_disable		= ata_port_disable,
-	.tf_load		= k2_sata_tf_load,
-	.tf_read		= k2_sata_tf_read,
-	.check_status		= k2_stat_check_status,
-	.exec_command		= ata_exec_command,
-	.dev_select		= ata_std_dev_select,
-	.bmdma_setup		= k2_bmdma_setup_mmio,
-	.bmdma_start		= k2_bmdma_start_mmio,
-	.bmdma_stop		= ata_bmdma_stop,
-	.bmdma_status		= ata_bmdma_status,
-	.qc_prep		= ata_qc_prep,
-	.qc_issue		= ata_qc_issue_prot,
-	.data_xfer		= ata_mmio_data_xfer,
-	.freeze			= ata_bmdma_freeze,
-	.thaw			= ata_bmdma_thaw,
-	.error_handler		= ata_bmdma_error_handler,
-	.post_internal_cmd	= ata_bmdma_post_internal_cmd,
-	.irq_handler		= ata_interrupt,
-	.irq_clear		= ata_bmdma_irq_clear,
-	.scr_read		= k2_sata_scr_read,
-	.scr_write		= k2_sata_scr_write,
-	.port_start		= ata_port_start,
-	.port_stop		= ata_port_stop,
-	.host_stop		= ata_pci_host_stop,
-};
-
-static void k2_sata_setup_port(struct ata_ioports *port, unsigned long base)
-{
-	port->cmd_addr		= base + K2_SATA_TF_CMD_OFFSET;
-	port->data_addr		= base + K2_SATA_TF_DATA_OFFSET;
-	port->feature_addr	=
-	port->error_addr	= base + K2_SATA_TF_ERROR_OFFSET;
-	port->nsect_addr	= base + K2_SATA_TF_NSECT_OFFSET;
-	port->lbal_addr		= base + K2_SATA_TF_LBAL_OFFSET;
-	port->lbam_addr		= base + K2_SATA_TF_LBAM_OFFSET;
-	port->lbah_addr		= base + K2_SATA_TF_LBAH_OFFSET;
-	port->device_addr	= base + K2_SATA_TF_DEVICE_OFFSET;
-	port->command_addr	=
-	port->status_addr	= base + K2_SATA_TF_CMDSTAT_OFFSET;
-	port->altstatus_addr	=
-	port->ctl_addr		= base + K2_SATA_TF_CTL_OFFSET;
-	port->bmdma_addr	= base + K2_SATA_DMA_CMD_OFFSET;
-	port->scr_addr		= base + K2_SATA_SCR_STATUS_OFFSET;
-}
-
-
-static int k2_sata_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
-{
-	static int printed_version;
-	struct ata_probe_ent *probe_ent = NULL;
-	unsigned long base;
-	void __iomem *mmio_base;
-	int pci_dev_busy = 0;
-	int rc;
-	int i;
-
-	if (!printed_version++)
-		dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
-
-	/*
-	 * If this driver happens to only be useful on Apple's K2, then
-	 * we should check that here as it has a normal Serverworks ID
-	 */
-	rc = pci_enable_device(pdev);
-	if (rc)
-		return rc;
-	/*
-	 * Check if we have resources mapped at all (second function may
-	 * have been disabled by firmware)
-	 */
-	if (pci_resource_len(pdev, 5) == 0)
-		return -ENODEV;
-
-	/* Request PCI regions */
-	rc = pci_request_regions(pdev, DRV_NAME);
-	if (rc) {
-		pci_dev_busy = 1;
-		goto err_out;
-	}
-
-	rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
-	if (rc)
-		goto err_out_regions;
-	rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
-	if (rc)
-		goto err_out_regions;
-
-	probe_ent = kmalloc(sizeof(*probe_ent), GFP_KERNEL);
-	if (probe_ent == NULL) {
-		rc = -ENOMEM;
-		goto err_out_regions;
-	}
-
-	memset(probe_ent, 0, sizeof(*probe_ent));
-	probe_ent->dev = pci_dev_to_dev(pdev);
-	INIT_LIST_HEAD(&probe_ent->node);
-
-	mmio_base = pci_iomap(pdev, 5, 0);
-	if (mmio_base == NULL) {
-		rc = -ENOMEM;
-		goto err_out_free_ent;
-	}
-	base = (unsigned long) mmio_base;
-
-	/* Clear a magic bit in SCR1 according to Darwin, those help
-	 * some funky seagate drives (though so far, those were already
-	 * set by the firmware on the machines I had access to)
-	 */
-	writel(readl(mmio_base + K2_SATA_SICR1_OFFSET) & ~0x00040000,
-	       mmio_base + K2_SATA_SICR1_OFFSET);
-
-	/* Clear SATA error & interrupts we don't use */
-	writel(0xffffffff, mmio_base + K2_SATA_SCR_ERROR_OFFSET);
-	writel(0x0, mmio_base + K2_SATA_SIM_OFFSET);
-
-	probe_ent->sht = &k2_sata_sht;
-	probe_ent->host_flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
-				ATA_FLAG_MMIO;
-	probe_ent->port_ops = &k2_sata_ops;
-	probe_ent->n_ports = 4;
-	probe_ent->irq = pdev->irq;
-	probe_ent->irq_flags = IRQF_SHARED;
-	probe_ent->mmio_base = mmio_base;
-
-	/* We don't care much about the PIO/UDMA masks, but the core won't like us
-	 * if we don't fill these
-	 */
-	probe_ent->pio_mask = 0x1f;
-	probe_ent->mwdma_mask = 0x7;
-	probe_ent->udma_mask = 0x7f;
-
-	/* different controllers have different number of ports - currently 4 or 8 */
-	/* All ports are on the same function. Multi-function device is no
-	 * longer available. This should not be seen in any system. */
-	for (i = 0; i < ent->driver_data; i++)
-		k2_sata_setup_port(&probe_ent->port[i], base + i * K2_SATA_PORT_OFFSET);
-
-	pci_set_master(pdev);
-
-	/* FIXME: check ata_device_add return value */
-	ata_device_add(probe_ent);
-	kfree(probe_ent);
-
-	return 0;
-
-err_out_free_ent:
-	kfree(probe_ent);
-err_out_regions:
-	pci_release_regions(pdev);
-err_out:
-	if (!pci_dev_busy)
-		pci_disable_device(pdev);
-	return rc;
-}
-
-/* 0x240 is device ID for Apple K2 device
- * 0x241 is device ID for Serverworks Frodo4
- * 0x242 is device ID for Serverworks Frodo8
- * 0x24a is device ID for BCM5785 (aka HT1000) HT southbridge integrated SATA
- * controller
- * */
-static const struct pci_device_id k2_sata_pci_tbl[] = {
-	{ 0x1166, 0x0240, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 },
-	{ 0x1166, 0x0241, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 },
-	{ 0x1166, 0x0242, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 8 },
-	{ 0x1166, 0x024a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 },
-	{ 0x1166, 0x024b, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 },
-	{ }
-};
-
-
-static struct pci_driver k2_sata_pci_driver = {
-	.name			= DRV_NAME,
-	.id_table		= k2_sata_pci_tbl,
-	.probe			= k2_sata_init_one,
-	.remove			= ata_pci_remove_one,
-};
-
-
-static int __init k2_sata_init(void)
-{
-	return pci_register_driver(&k2_sata_pci_driver);
-}
-
-
-static void __exit k2_sata_exit(void)
-{
-	pci_unregister_driver(&k2_sata_pci_driver);
-}
-
-
-MODULE_AUTHOR("Benjamin Herrenschmidt");
-MODULE_DESCRIPTION("low-level driver for K2 SATA controller");
-MODULE_LICENSE("GPL");
-MODULE_DEVICE_TABLE(pci, k2_sata_pci_tbl);
-MODULE_VERSION(DRV_VERSION);
-
-module_init(k2_sata_init);
-module_exit(k2_sata_exit);