Remove support for out-of-date SLES9 and RHEL4 kernel

ports  from build integration

Both distros now include Xen support from their respective upstreams
and these kernels are very out of date wrt both the upstream distro
kernel and the upstream Xen kernel.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>

1 files changed, 58 insertions, 0 deletions

diff --git a/unmodified_drivers/linux-2.6/platform-pci/platform-pci.c b/unmodified_drivers/linux-2.6/platform-pci/platform-pci.c
index a1c17dd7db..f081cb1115 100644
--- a/unmodified_drivers/linux-2.6/platform-pci/platform-pci.c
+++ b/unmodified_drivers/linux-2.6/platform-pci/platform-pci.c
@@ -257,6 +257,60 @@ int xen_reboot_init(void);
 int xen_panic_handler_init(void);
 int gnttab_init(void);
 
+#define XEN_IOPORT_BASE 0x10
+
+#define XEN_IOPORT_PLATFLAGS	(XEN_IOPORT_BASE + 0) /* 1 byte access (R/W) */
+#define XEN_IOPORT_MAGIC	(XEN_IOPORT_BASE + 0) /* 2 byte access (R) */
+#define XEN_IOPORT_UNPLUG	(XEN_IOPORT_BASE + 0) /* 2 byte access (W) */
+#define XEN_IOPORT_DRVVER	(XEN_IOPORT_BASE + 0) /* 4 byte access (W) */
+
+#define XEN_IOPORT_SYSLOG	(XEN_IOPORT_BASE + 2) /* 1 byte access (W) */
+#define XEN_IOPORT_PROTOVER	(XEN_IOPORT_BASE + 2) /* 1 byte access (R) */
+#define XEN_IOPORT_PRODNUM	(XEN_IOPORT_BASE + 2) /* 2 byte access (W) */
+
+#define XEN_IOPORT_MAGIC_VAL 0x49d2
+#define XEN_IOPORT_LINUX_PRODNUM 0xffff /* NB: register a proper one */
+#define XEN_IOPORT_LINUX_DRVVER  ((LINUX_VERSION_CODE << 8) + 0x0)
+
+static int check_platform_magic(struct device *dev, long ioaddr, long iolen)
+{
+	short magic;
+	char protocol;
+
+	if (iolen < 0x16)
+		return -ENODEV;
+
+	magic = inw(XEN_IOPORT_MAGIC);
+
+	if (magic != XEN_IOPORT_MAGIC_VAL) {
+		dev_err(dev, "invalid magic %#x", magic);
+		return -ENODEV;
+	}
+
+	protocol = inb(XEN_IOPORT_PROTOVER);
+
+	dev_info(dev, "I/O protocol version %d\n", protocol);
+
+	switch (protocol) {
+	case 1:
+		outw(XEN_IOPORT_PRODNUM, 0xbeef);
+		outl(XEN_IOPORT_DRVVER, 0xdead);
+		if (inw(XEN_IOPORT_MAGIC) != XEN_IOPORT_MAGIC_VAL) {
+			dev_err(dev, "blacklisted by host\n");
+			return -ENODEV;
+		}
+		/* Fall through */
+	case 0:
+		outw(XEN_IOPORT_UNPLUG, 0xf);
+		break;
+	default:
+		dev_err(dev, "unknown qemu version\n");
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
 static int __devinit platform_pci_init(struct pci_dev *pdev,
 				       const struct pci_device_id *ent)
 {
@@ -305,6 +359,10 @@ static int __devinit platform_pci_init(struct pci_dev *pdev,
 	if (ret < 0)
 		goto out;
 
+	ret = check_platform_magic(&pdev->dev, ioaddr, iolen);
+	if (ret < 0)
+		goto out;
+
 	if ((ret = init_xen_info()))
 		goto out;