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path: root/drivers/ssb/pcihost_wrapper.c
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Diffstat (limited to 'drivers/ssb/pcihost_wrapper.c')
-rw-r--r--drivers/ssb/pcihost_wrapper.c104
1 files changed, 104 insertions, 0 deletions
diff --git a/drivers/ssb/pcihost_wrapper.c b/drivers/ssb/pcihost_wrapper.c
new file mode 100644
index 000000000000..82a10abef640
--- /dev/null
+++ b/drivers/ssb/pcihost_wrapper.c
@@ -0,0 +1,104 @@
+/*
+ * Sonics Silicon Backplane
+ * PCI Hostdevice wrapper
+ *
+ * Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>
+ * Copyright (c) 2005 Stefano Brivio <st3@riseup.net>
+ * Copyright (c) 2005 Danny van Dyk <kugelfang@gentoo.org>
+ * Copyright (c) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>
+ * Copyright (c) 2005-2007 Michael Buesch <mbuesch@freenet.de>
+ *
+ * Licensed under the GNU/GPL. See COPYING for details.
+ */
+
+#include <linux/pci.h>
+#include <linux/ssb/ssb.h>
+
+
+#ifdef CONFIG_PM
+static int ssb_pcihost_suspend(struct pci_dev *dev, pm_message_t state)
+{
+ pci_save_state(dev);
+ pci_disable_device(dev);
+ pci_set_power_state(dev, pci_choose_state(dev, state));
+
+ return 0;
+}
+
+static int ssb_pcihost_resume(struct pci_dev *dev)
+{
+ int err;
+
+ pci_set_power_state(dev, 0);
+ err = pci_enable_device(dev);
+ if (err)
+ return err;
+ pci_restore_state(dev);
+
+ return 0;
+}
+#else /* CONFIG_PM */
+# define ssb_pcihost_suspend NULL
+# define ssb_pcihost_resume NULL
+#endif /* CONFIG_PM */
+
+static int ssb_pcihost_probe(struct pci_dev *dev,
+ const struct pci_device_id *id)
+{
+ struct ssb_bus *ssb;
+ int err = -ENOMEM;
+ const char *name;
+
+ ssb = kzalloc(sizeof(*ssb), GFP_KERNEL);
+ if (!ssb)
+ goto out;
+ err = pci_enable_device(dev);
+ if (err)
+ goto err_kfree_ssb;
+ name = dev->dev.bus_id;
+ if (dev->driver && dev->driver->name)
+ name = dev->driver->name;
+ err = pci_request_regions(dev, name);
+ if (err)
+ goto err_pci_disable;
+ pci_set_master(dev);
+
+ err = ssb_bus_pcibus_register(ssb, dev);
+ if (err)
+ goto err_pci_release_regions;
+
+ pci_set_drvdata(dev, ssb);
+
+out:
+ return err;
+
+err_pci_release_regions:
+ pci_release_regions(dev);
+err_pci_disable:
+ pci_disable_device(dev);
+err_kfree_ssb:
+ kfree(ssb);
+ return err;
+}
+
+static void ssb_pcihost_remove(struct pci_dev *dev)
+{
+ struct ssb_bus *ssb = pci_get_drvdata(dev);
+
+ ssb_bus_unregister(ssb);
+ pci_release_regions(dev);
+ pci_disable_device(dev);
+ kfree(ssb);
+ pci_set_drvdata(dev, NULL);
+}
+
+int ssb_pcihost_register(struct pci_driver *driver)
+{
+ driver->probe = ssb_pcihost_probe;
+ driver->remove = ssb_pcihost_remove;
+ driver->suspend = ssb_pcihost_suspend;
+ driver->resume = ssb_pcihost_resume;
+
+ return pci_register_driver(driver);
+}
+EXPORT_SYMBOL(ssb_pcihost_register);