Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 245 insertions, 0 deletions

diff --git a/kernel/drivers/ata/sata_uli.c b/kernel/drivers/ata/sata_uli.c
new file mode 100644
index 000000000..08f98c3ed
--- /dev/null
+++ b/kernel/drivers/ata/sata_uli.c
@@ -0,0 +1,245 @@
+/*
+ *  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/gfp.h>
+#include <linux/pci.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	"1.3"
+
+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 int uli_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val);
+static int uli_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val);
+
+static const struct pci_device_id uli_pci_tbl[] = {
+	{ PCI_VDEVICE(AL, 0x5289), uli_5289 },
+	{ PCI_VDEVICE(AL, 0x5287), uli_5287 },
+	{ PCI_VDEVICE(AL, 0x5281), 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 = {
+	ATA_BMDMA_SHT(DRV_NAME),
+};
+
+static struct ata_port_operations uli_ops = {
+	.inherits		= &ata_bmdma_port_ops,
+	.scr_read		= uli_scr_read,
+	.scr_write		= uli_scr_write,
+	.hardreset		= ATA_OP_NULL,
+};
+
+static const struct ata_port_info uli_port_info = {
+	.flags		= ATA_FLAG_SATA | ATA_FLAG_IGN_SIMPLEX,
+	.pio_mask       = ATA_PIO4,
+	.udma_mask      = ATA_UDMA6,
+	.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->private_data;
+	return hpriv->scr_cfg_addr[ap->port_no] + (4 * sc_reg);
+}
+
+static u32 uli_scr_cfg_read(struct ata_link *link, unsigned int sc_reg)
+{
+	struct pci_dev *pdev = to_pci_dev(link->ap->host->dev);
+	unsigned int cfg_addr = get_scr_cfg_addr(link->ap, sc_reg);
+	u32 val;
+
+	pci_read_config_dword(pdev, cfg_addr, &val);
+	return val;
+}
+
+static void uli_scr_cfg_write(struct ata_link *link, unsigned int scr, u32 val)
+{
+	struct pci_dev *pdev = to_pci_dev(link->ap->host->dev);
+	unsigned int cfg_addr = get_scr_cfg_addr(link->ap, scr);
+
+	pci_write_config_dword(pdev, cfg_addr, val);
+}
+
+static int uli_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val)
+{
+	if (sc_reg > SCR_CONTROL)
+		return -EINVAL;
+
+	*val = uli_scr_cfg_read(link, sc_reg);
+	return 0;
+}
+
+static int uli_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val)
+{
+	if (sc_reg > SCR_CONTROL) //SCR_CONTROL=2, SCR_ERROR=1, SCR_STATUS=0
+		return -EINVAL;
+
+	uli_scr_cfg_write(link, sc_reg, val);
+	return 0;
+}
+
+static int uli_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+	const struct ata_port_info *ppi[] = { &uli_port_info, NULL };
+	unsigned int board_idx = (unsigned int) ent->driver_data;
+	struct ata_host *host;
+	struct uli_priv *hpriv;
+	void __iomem * const *iomap;
+	struct ata_ioports *ioaddr;
+	int n_ports, rc;
+
+	ata_print_version_once(&pdev->dev, DRV_VERSION);
+
+	rc = pcim_enable_device(pdev);
+	if (rc)
+		return rc;
+
+	n_ports = 2;
+	if (board_idx == uli_5287)
+		n_ports = 4;
+
+	/* allocate the host */
+	host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports);
+	if (!host)
+		return -ENOMEM;
+
+	hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL);
+	if (!hpriv)
+		return -ENOMEM;
+	host->private_data = hpriv;
+
+	/* the first two ports are standard SFF */
+	rc = ata_pci_sff_init_host(host);
+	if (rc)
+		return rc;
+
+	ata_pci_bmdma_init(host);
+
+	iomap = host->iomap;
+
+	switch (board_idx) {
+	case uli_5287:
+		/* If there are four, the last two live right after
+		 * the standard SFF ports.
+		 */
+		hpriv->scr_cfg_addr[0] = ULI5287_BASE;
+		hpriv->scr_cfg_addr[1] = ULI5287_BASE + ULI5287_OFFS;
+
+		ioaddr = &host->ports[2]->ioaddr;
+		ioaddr->cmd_addr = iomap[0] + 8;
+		ioaddr->altstatus_addr =
+		ioaddr->ctl_addr = (void __iomem *)
+			((unsigned long)iomap[1] | ATA_PCI_CTL_OFS) + 4;
+		ioaddr->bmdma_addr = iomap[4] + 16;
+		hpriv->scr_cfg_addr[2] = ULI5287_BASE + ULI5287_OFFS*4;
+		ata_sff_std_ports(ioaddr);
+
+		ata_port_desc(host->ports[2],
+			"cmd 0x%llx ctl 0x%llx bmdma 0x%llx",
+			(unsigned long long)pci_resource_start(pdev, 0) + 8,
+			((unsigned long long)pci_resource_start(pdev, 1) | ATA_PCI_CTL_OFS) + 4,
+			(unsigned long long)pci_resource_start(pdev, 4) + 16);
+
+		ioaddr = &host->ports[3]->ioaddr;
+		ioaddr->cmd_addr = iomap[2] + 8;
+		ioaddr->altstatus_addr =
+		ioaddr->ctl_addr = (void __iomem *)
+			((unsigned long)iomap[3] | ATA_PCI_CTL_OFS) + 4;
+		ioaddr->bmdma_addr = iomap[4] + 24;
+		hpriv->scr_cfg_addr[3] = ULI5287_BASE + ULI5287_OFFS*5;
+		ata_sff_std_ports(ioaddr);
+
+		ata_port_desc(host->ports[2],
+			"cmd 0x%llx ctl 0x%llx bmdma 0x%llx",
+			(unsigned long long)pci_resource_start(pdev, 2) + 9,
+			((unsigned long long)pci_resource_start(pdev, 3) | ATA_PCI_CTL_OFS) + 4,
+			(unsigned long long)pci_resource_start(pdev, 4) + 24);
+
+		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);
+	return ata_host_activate(host, pdev->irq, ata_bmdma_interrupt,
+				 IRQF_SHARED, &uli_sht);
+}
+
+module_pci_driver(uli_pci_driver);