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-rw-r--r--sys/compat/linuxkpi/common/src/linux_pci.c208
1 files changed, 208 insertions, 0 deletions
diff --git a/sys/compat/linuxkpi/common/src/linux_pci.c b/sys/compat/linuxkpi/common/src/linux_pci.c
new file mode 100644
index 0000000..2d3d03b
--- /dev/null
+++ b/sys/compat/linuxkpi/common/src/linux_pci.c
@@ -0,0 +1,208 @@
+/*-
+ * Copyright (c) 2015 Mellanox Technologies, Ltd.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice unmodified, this list of conditions, and the following
+ * disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/malloc.h>
+#include <sys/kernel.h>
+#include <sys/sysctl.h>
+#include <sys/lock.h>
+#include <sys/mutex.h>
+#include <sys/bus.h>
+#include <sys/fcntl.h>
+#include <sys/file.h>
+#include <sys/filio.h>
+#include <sys/rwlock.h>
+
+#include <vm/vm.h>
+#include <vm/pmap.h>
+
+#include <machine/stdarg.h>
+#include <machine/pmap.h>
+
+#include <linux/kobject.h>
+#include <linux/device.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/cdev.h>
+#include <linux/file.h>
+#include <linux/sysfs.h>
+#include <linux/mm.h>
+#include <linux/io.h>
+#include <linux/vmalloc.h>
+#include <linux/pci.h>
+
+static device_probe_t linux_pci_probe;
+static device_attach_t linux_pci_attach;
+static device_detach_t linux_pci_detach;
+
+static device_method_t pci_methods[] = {
+ DEVMETHOD(device_probe, linux_pci_probe),
+ DEVMETHOD(device_attach, linux_pci_attach),
+ DEVMETHOD(device_detach, linux_pci_detach),
+ DEVMETHOD_END
+};
+
+static struct pci_driver *
+linux_pci_find(device_t dev, const struct pci_device_id **idp)
+{
+ const struct pci_device_id *id;
+ struct pci_driver *pdrv;
+ uint16_t vendor;
+ uint16_t device;
+
+ vendor = pci_get_vendor(dev);
+ device = pci_get_device(dev);
+
+ spin_lock(&pci_lock);
+ list_for_each_entry(pdrv, &pci_drivers, links) {
+ for (id = pdrv->id_table; id->vendor != 0; id++) {
+ if (vendor == id->vendor && device == id->device) {
+ *idp = id;
+ spin_unlock(&pci_lock);
+ return (pdrv);
+ }
+ }
+ }
+ spin_unlock(&pci_lock);
+ return (NULL);
+}
+
+static int
+linux_pci_probe(device_t dev)
+{
+ const struct pci_device_id *id;
+ struct pci_driver *pdrv;
+
+ if ((pdrv = linux_pci_find(dev, &id)) == NULL)
+ return (ENXIO);
+ if (device_get_driver(dev) != &pdrv->driver)
+ return (ENXIO);
+ device_set_desc(dev, pdrv->name);
+ return (0);
+}
+
+static int
+linux_pci_attach(device_t dev)
+{
+ struct resource_list_entry *rle;
+ struct pci_dev *pdev;
+ struct pci_driver *pdrv;
+ const struct pci_device_id *id;
+ int error;
+
+ pdrv = linux_pci_find(dev, &id);
+ pdev = device_get_softc(dev);
+ pdev->dev.parent = &linux_rootdev;
+ pdev->dev.bsddev = dev;
+ INIT_LIST_HEAD(&pdev->dev.irqents);
+ pdev->device = id->device;
+ pdev->vendor = id->vendor;
+ pdev->dev.dma_mask = &pdev->dma_mask;
+ pdev->pdrv = pdrv;
+ kobject_init(&pdev->dev.kobj, &dev_ktype);
+ kobject_set_name(&pdev->dev.kobj, device_get_nameunit(dev));
+ kobject_add(&pdev->dev.kobj, &linux_rootdev.kobj,
+ kobject_name(&pdev->dev.kobj));
+ rle = _pci_get_rle(pdev, SYS_RES_IRQ, 0);
+ if (rle)
+ pdev->dev.irq = rle->start;
+ else
+ pdev->dev.irq = 0;
+ pdev->irq = pdev->dev.irq;
+ mtx_unlock(&Giant);
+ spin_lock(&pci_lock);
+ list_add(&pdev->links, &pci_devices);
+ spin_unlock(&pci_lock);
+ error = pdrv->probe(pdev, id);
+ mtx_lock(&Giant);
+ if (error) {
+ spin_lock(&pci_lock);
+ list_del(&pdev->links);
+ spin_unlock(&pci_lock);
+ put_device(&pdev->dev);
+ return (-error);
+ }
+ return (0);
+}
+
+static int
+linux_pci_detach(device_t dev)
+{
+ struct pci_dev *pdev;
+
+ pdev = device_get_softc(dev);
+ mtx_unlock(&Giant);
+ pdev->pdrv->remove(pdev);
+ mtx_lock(&Giant);
+ spin_lock(&pci_lock);
+ list_del(&pdev->links);
+ spin_unlock(&pci_lock);
+ put_device(&pdev->dev);
+
+ return (0);
+}
+
+int
+pci_register_driver(struct pci_driver *pdrv)
+{
+ devclass_t bus;
+ int error = 0;
+
+ bus = devclass_find("pci");
+
+ spin_lock(&pci_lock);
+ list_add(&pdrv->links, &pci_drivers);
+ spin_unlock(&pci_lock);
+ pdrv->driver.name = pdrv->name;
+ pdrv->driver.methods = pci_methods;
+ pdrv->driver.size = sizeof(struct pci_dev);
+ mtx_lock(&Giant);
+ if (bus != NULL) {
+ error = devclass_add_driver(bus, &pdrv->driver, BUS_PASS_DEFAULT,
+ &pdrv->bsdclass);
+ }
+ mtx_unlock(&Giant);
+ return (-error);
+}
+
+void
+pci_unregister_driver(struct pci_driver *pdrv)
+{
+ devclass_t bus;
+
+ bus = devclass_find("pci");
+
+ list_del(&pdrv->links);
+ mtx_lock(&Giant);
+ if (bus != NULL)
+ devclass_delete_driver(bus, &pdrv->driver);
+ mtx_unlock(&Giant);
+}
+
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