Move libata to drivers/ata.

1 files changed, 300 insertions, 0 deletions

diff --git a/drivers/ata/sata_uli.c b/drivers/ata/sata_uli.c
new file mode 100644
index 000000000000..654aae2b25c5
--- /dev/null
+++ b/drivers/ata/sata_uli.c
@@ -0,0 +1,300 @@
+/*
+ *  sata_uli.c - ULi Electronics SATA
+ *
+ *
+ *  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>
+
+#define DRV_NAME	"sata_uli"
+#define DRV_VERSION	"1.0"
+
+enum {
+	uli_5289		= 0,
+	uli_5287		= 1,
+	uli_5281		= 2,
+
+	uli_max_ports		= 4,
+
+	/* PCI configuration registers */
+	ULI5287_BASE		= 0x90, /* sata0 phy SCR registers */
+	ULI5287_OFFS		= 0x10, /* offset from sata0->sata1 phy regs */
+	ULI5281_BASE		= 0x60, /* sata0 phy SCR  registers */
+	ULI5281_OFFS		= 0x60, /* offset from sata0->sata1 phy regs */
+};
+
+struct uli_priv {
+	unsigned int		scr_cfg_addr[uli_max_ports];
+};
+
+static int uli_init_one (struct pci_dev *pdev, const struct pci_device_id *ent);
+static u32 uli_scr_read (struct ata_port *ap, unsigned int sc_reg);
+static void uli_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val);
+
+static const struct pci_device_id uli_pci_tbl[] = {
+	{ PCI_VENDOR_ID_AL, 0x5289, PCI_ANY_ID, PCI_ANY_ID, 0, 0, uli_5289 },
+	{ PCI_VENDOR_ID_AL, 0x5287, PCI_ANY_ID, PCI_ANY_ID, 0, 0, uli_5287 },
+	{ PCI_VENDOR_ID_AL, 0x5281, PCI_ANY_ID, PCI_ANY_ID, 0, 0, uli_5281 },
+	{ }	/* terminate list */
+};
+
+
+static struct pci_driver uli_pci_driver = {
+	.name			= DRV_NAME,
+	.id_table		= uli_pci_tbl,
+	.probe			= uli_init_one,
+	.remove			= ata_pci_remove_one,
+};
+
+static struct scsi_host_template uli_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,
+	.bios_param		= ata_std_bios_param,
+};
+
+static const struct ata_port_operations uli_ops = {
+	.port_disable		= ata_port_disable,
+
+	.tf_load		= ata_tf_load,
+	.tf_read		= ata_tf_read,
+	.check_status		= ata_check_status,
+	.exec_command		= ata_exec_command,
+	.dev_select		= ata_std_dev_select,
+
+	.bmdma_setup            = ata_bmdma_setup,
+	.bmdma_start            = ata_bmdma_start,
+	.bmdma_stop		= ata_bmdma_stop,
+	.bmdma_status		= ata_bmdma_status,
+	.qc_prep		= ata_qc_prep,
+	.qc_issue		= ata_qc_issue_prot,
+	.data_xfer		= ata_pio_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		= uli_scr_read,
+	.scr_write		= uli_scr_write,
+
+	.port_start		= ata_port_start,
+	.port_stop		= ata_port_stop,
+	.host_stop		= ata_host_stop,
+};
+
+static struct ata_port_info uli_port_info = {
+	.sht            = &uli_sht,
+	.host_flags     = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY,
+	.pio_mask       = 0x1f,		/* pio0-4 */
+	.udma_mask      = 0x7f,		/* udma0-6 */
+	.port_ops       = &uli_ops,
+};
+
+
+MODULE_AUTHOR("Peer Chen");
+MODULE_DESCRIPTION("low-level driver for ULi Electronics SATA controller");
+MODULE_LICENSE("GPL");
+MODULE_DEVICE_TABLE(pci, uli_pci_tbl);
+MODULE_VERSION(DRV_VERSION);
+
+static unsigned int get_scr_cfg_addr(struct ata_port *ap, unsigned int sc_reg)
+{
+	struct uli_priv *hpriv = ap->host_set->private_data;
+	return hpriv->scr_cfg_addr[ap->port_no] + (4 * sc_reg);
+}
+
+static u32 uli_scr_cfg_read (struct ata_port *ap, unsigned int sc_reg)
+{
+	struct pci_dev *pdev = to_pci_dev(ap->host_set->dev);
+	unsigned int cfg_addr = get_scr_cfg_addr(ap, sc_reg);
+	u32 val;
+
+	pci_read_config_dword(pdev, cfg_addr, &val);
+	return val;
+}
+
+static void uli_scr_cfg_write (struct ata_port *ap, unsigned int scr, u32 val)
+{
+	struct pci_dev *pdev = to_pci_dev(ap->host_set->dev);
+	unsigned int cfg_addr = get_scr_cfg_addr(ap, scr);
+
+	pci_write_config_dword(pdev, cfg_addr, val);
+}
+
+static u32 uli_scr_read (struct ata_port *ap, unsigned int sc_reg)
+{
+	if (sc_reg > SCR_CONTROL)
+		return 0xffffffffU;
+
+	return uli_scr_cfg_read(ap, sc_reg);
+}
+
+static void uli_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val)
+{
+	if (sc_reg > SCR_CONTROL)	//SCR_CONTROL=2, SCR_ERROR=1, SCR_STATUS=0
+		return;
+
+	uli_scr_cfg_write(ap, sc_reg, val);
+}
+
+static int uli_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+	static int printed_version;
+	struct ata_probe_ent *probe_ent;
+	struct ata_port_info *ppi;
+	int rc;
+	unsigned int board_idx = (unsigned int) ent->driver_data;
+	int pci_dev_busy = 0;
+	struct uli_priv *hpriv;
+
+	if (!printed_version++)
+		dev_printk(KERN_INFO, &pdev->dev, "version " DRV_VERSION "\n");
+
+	rc = pci_enable_device(pdev);
+	if (rc)
+		return rc;
+
+	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;
+
+	ppi = &uli_port_info;
+	probe_ent = ata_pci_init_native_mode(pdev, &ppi, ATA_PORT_PRIMARY | ATA_PORT_SECONDARY);
+	if (!probe_ent) {
+		rc = -ENOMEM;
+		goto err_out_regions;
+	}
+
+	hpriv = kzalloc(sizeof(*hpriv), GFP_KERNEL);
+	if (!hpriv) {
+		rc = -ENOMEM;
+		goto err_out_probe_ent;
+	}
+
+	probe_ent->private_data = hpriv;
+
+	switch (board_idx) {
+	case uli_5287:
+		hpriv->scr_cfg_addr[0] = ULI5287_BASE;
+		hpriv->scr_cfg_addr[1] = ULI5287_BASE + ULI5287_OFFS;
+       		probe_ent->n_ports = 4;
+
+       		probe_ent->port[2].cmd_addr = pci_resource_start(pdev, 0) + 8;
+		probe_ent->port[2].altstatus_addr =
+		probe_ent->port[2].ctl_addr =
+			(pci_resource_start(pdev, 1) | ATA_PCI_CTL_OFS) + 4;
+		probe_ent->port[2].bmdma_addr = pci_resource_start(pdev, 4) + 16;
+		hpriv->scr_cfg_addr[2] = ULI5287_BASE + ULI5287_OFFS*4;
+
+		probe_ent->port[3].cmd_addr = pci_resource_start(pdev, 2) + 8;
+		probe_ent->port[3].altstatus_addr =
+		probe_ent->port[3].ctl_addr =
+			(pci_resource_start(pdev, 3) | ATA_PCI_CTL_OFS) + 4;
+		probe_ent->port[3].bmdma_addr = pci_resource_start(pdev, 4) + 24;
+		hpriv->scr_cfg_addr[3] = ULI5287_BASE + ULI5287_OFFS*5;
+
+		ata_std_ports(&probe_ent->port[2]);
+		ata_std_ports(&probe_ent->port[3]);
+		break;
+
+	case uli_5289:
+		hpriv->scr_cfg_addr[0] = ULI5287_BASE;
+		hpriv->scr_cfg_addr[1] = ULI5287_BASE + ULI5287_OFFS;
+		break;
+
+	case uli_5281:
+		hpriv->scr_cfg_addr[0] = ULI5281_BASE;
+		hpriv->scr_cfg_addr[1] = ULI5281_BASE + ULI5281_OFFS;
+		break;
+
+	default:
+		BUG();
+		break;
+	}
+
+	pci_set_master(pdev);
+	pci_intx(pdev, 1);
+
+	/* FIXME: check ata_device_add return value */
+	ata_device_add(probe_ent);
+	kfree(probe_ent);
+
+	return 0;
+
+err_out_probe_ent:
+	kfree(probe_ent);
+err_out_regions:
+	pci_release_regions(pdev);
+err_out:
+	if (!pci_dev_busy)
+		pci_disable_device(pdev);
+	return rc;
+
+}
+
+static int __init uli_init(void)
+{
+	return pci_register_driver(&uli_pci_driver);
+}
+
+static void __exit uli_exit(void)
+{
+	pci_unregister_driver(&uli_pci_driver);
+}
+
+
+module_init(uli_init);
+module_exit(uli_exit);