[libata] Add driver for SiS 964/180 SATA.

drivers/scsi/Kconfig

@@ -449,6 +449,14 @@ config SCSI_SATA_SIL
 
 	  If unsure, say N.
 
+config SCSI_SATA_SIS
+	tristate "SiS 964/180 SATA support"
+	depends on SCSI_SATA && PCI
+	help
+	  This option enables support for SiS Serial ATA 964/180.
+
+	  If unsure, say N.
+
 config SCSI_SATA_VIA
 	tristate "VIA SATA support"
 	depends on SCSI_SATA && PCI && EXPERIMENTAL

drivers/scsi/Makefile

@@ -123,6 +123,7 @@ obj-$(CONFIG_SCSI_SATA_PROMISE)	+= libata.o sata_promise.o
 obj-$(CONFIG_SCSI_SATA_SIL)	+= libata.o sata_sil.o
 obj-$(CONFIG_SCSI_SATA_VIA)	+= libata.o sata_via.o
 obj-$(CONFIG_SCSI_SATA_VITESSE)	+= libata.o sata_vsc.o
+obj-$(CONFIG_SCSI_SATA_SIS)	+= libata.o sata_sis.o
 
 obj-$(CONFIG_ARM)		+= arm/
 

drivers/scsi/sata_sis.c

+/*
+ *  sata_sis.c - Silicon Integrated Systems SATA
+ *
+ *  Copyright 2004 Uwe Koziolek
+ *
+ *  The contents of this file are subject to the Open
+ *  Software License version 1.1 that can be found at
+ *  http://www.opensource.org/licenses/osl-1.1.txt and is included herein
+ *  by reference.
+ *
+ *  Alternatively, the contents of this file may be used under the terms
+ *  of the GNU General Public License version 2 (the "GPL") as distributed
+ *  in the kernel source COPYING file, in which case the provisions of
+ *  the GPL are applicable instead of the above.  If you wish to allow
+ *  the use of your version of this file only under the terms of the
+ *  GPL and not to allow others to use your version of this file under
+ *  the OSL, indicate your decision by deleting the provisions above and
+ *  replace them with the notice and other provisions required by the GPL.
+ *  If you do not delete the provisions above, a recipient may use your
+ *  version of this file under either the OSL or the GPL.
+ *
+ */
+
+#include <linux/config.h>
+#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 "scsi.h"
+#include "hosts.h"
+#include <linux/libata.h>
+
+#define DRV_NAME	"sata_sis"
+#define DRV_VERSION	"0.04"
+
+enum {
+	sis_180			= 0,
+};
+
+static int sis_init_one (struct pci_dev *pdev, const struct pci_device_id *ent);
+static u32 sis_scr_read (struct ata_port *ap, unsigned int sc_reg);
+static void sis_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val);
+
+#ifndef PCI_DEVICE_ID_SI_180
+#define PCI_DEVICE_ID_SI_180 0x0180
+#endif
+
+static struct pci_device_id sis_pci_tbl[] = {
+	{ PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_180, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sis_180 },
+	{ }	/* terminate list */
+};
+
+
+static struct pci_driver sis_pci_driver = {
+	.name			= DRV_NAME,
+	.id_table		= sis_pci_tbl,
+	.probe			= sis_init_one,
+	.remove			= ata_pci_remove_one,
+};
+
+static Scsi_Host_Template sis_sht = {
+	.module			= THIS_MODULE,
+	.name			= DRV_NAME,
+	.queuecommand		= ata_scsi_queuecmd,
+	.eh_strategy_handler	= ata_scsi_error,
+	.can_queue		= ATA_DEF_QUEUE,
+	.this_id		= ATA_SHT_THIS_ID,
+	.sg_tablesize		= ATA_MAX_PRD,
+	.max_sectors		= ATA_MAX_SECTORS,
+	.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,
+	.bios_param		= ata_std_bios_param,
+};
+
+static struct ata_port_operations sis_ops = {
+	.port_disable		= ata_port_disable,
+	.tf_load		= ata_tf_load_pio,
+	.tf_read		= ata_tf_read_pio,
+	.check_status		= ata_check_status_pio,
+	.exec_command		= ata_exec_command_pio,
+	.phy_reset		= sata_phy_reset,
+	.bmdma_start            = ata_bmdma_start_pio,
+	.fill_sg		= ata_fill_sg,
+	.eng_timeout		= ata_eng_timeout,
+	.irq_handler		= ata_interrupt,
+	.scr_read		= sis_scr_read,
+	.scr_write		= sis_scr_write,
+	.port_start		= ata_port_start,
+	.port_stop		= ata_port_stop,
+};
+
+static struct ata_port_info sis_port_info[] = {
+	/* sis_180 */
+	{
+		.sht		= &sis_sht,
+		.host_flags	= ATA_FLAG_SATA| ATA_FLAG_NO_LEGACY |
+				  ATA_FLAG_SATA_RESET,
+		.pio_mask	= 0x03,			/* pio3-4 */
+		.udma_mask	= 0x7f,			/* udma0-6; FIXME */
+		.port_ops	= &sis_ops,
+	}
+};
+
+MODULE_AUTHOR("Uwe Koziolek");
+MODULE_DESCRIPTION("low-level driver for Silicon Integratad Systems SATA controller");
+MODULE_LICENSE("GPL");
+MODULE_DEVICE_TABLE(pci, sis_pci_tbl);
+
+
+static u32 sis_scr_read (struct ata_port *ap, unsigned int sc_reg)
+{
+	if (sc_reg >= 16)
+		return 0xffffffffU;
+
+	return inl(ap->ioaddr.scr_addr + (sc_reg * 4));
+}
+
+static void sis_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val)
+{
+	if (sc_reg >= 16)
+		return;
+	outl(val, ap->ioaddr.scr_addr + (sc_reg * 4));
+}
+
+static int sis_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+	struct ata_probe_ent *probe_ent = NULL;
+	struct ata_port_info *port0 = &sis_port_info[sis_180];
+	int rc;
+	u16 pci_cmd;
+
+	rc = pci_enable_device(pdev);
+	if (rc)
+		return rc;
+
+	rc = pci_request_regions(pdev, DRV_NAME);
+	if (rc)
+		goto err_out;
+
+	rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
+	if (rc)
+		goto err_out_regions;
+
+	probe_ent = kmalloc(sizeof(*probe_ent), GFP_KERNEL);
+	if (!probe_ent) {
+		rc = -ENOMEM;
+		goto err_out_regions;
+	}
+
+	memset(probe_ent, 0, sizeof(*probe_ent));
+	probe_ent->pdev = pdev;
+	INIT_LIST_HEAD(&probe_ent->node);
+
+	probe_ent->sht = port0->sht;
+	probe_ent->host_flags = port0->host_flags;
+	probe_ent->pio_mask = port0->pio_mask;
+	probe_ent->udma_mask = port0->udma_mask;
+	probe_ent->port_ops = port0->port_ops;
+
+	probe_ent->port[0].cmd_addr = pci_resource_start(pdev, 0);
+	ata_std_ports(&probe_ent->port[0]);
+	probe_ent->port[0].ctl_addr =
+		pci_resource_start(pdev, 1) | ATA_PCI_CTL_OFS;
+	probe_ent->port[0].bmdma_addr = pci_resource_start(pdev, 4);
+	probe_ent->port[0].scr_addr = pci_resource_start(pdev, 5);
+
+	probe_ent->port[1].cmd_addr = pci_resource_start(pdev, 2);
+	ata_std_ports(&probe_ent->port[1]);
+	probe_ent->port[1].ctl_addr =
+		pci_resource_start(pdev, 3) | ATA_PCI_CTL_OFS;
+	probe_ent->port[1].bmdma_addr = pci_resource_start(pdev, 4) + 8;
+	probe_ent->port[1].scr_addr = pci_resource_start(pdev, 5) + 64;
+
+	probe_ent->n_ports = 2;
+	probe_ent->irq = pdev->irq;
+	probe_ent->irq_flags = SA_SHIRQ;
+
+	pci_set_master(pdev);
+
+	pci_read_config_word(pdev, PCI_COMMAND, &pci_cmd);
+	pci_write_config_word(pdev, PCI_COMMAND,
+		pci_cmd & ~PCI_COMMAND_INTX_DISABLE); /* enable interrupts */
+
+	ata_device_add(probe_ent);
+	kfree(probe_ent);
+
+	return 0;
+
+err_out_regions:
+	pci_release_regions(pdev);
+
+err_out:
+	pci_disable_device(pdev);
+	return rc;
+
+}
+
+static int __init sis_init(void)
+{
+	int rc;
+
+	rc = pci_module_init(&sis_pci_driver);
+	if (rc)
+		return rc;
+
+	return 0;
+}
+
+static void __exit sis_exit(void)
+{
+	pci_unregister_driver(&sis_pci_driver);
+}
+
+
+module_init(sis_init);
+module_exit(sis_exit);