#include <asm/mdesc.h>
#include <asm/vio.h>
-static inline int find_in_proplist(const char *list, const char *match,
- int len)
-{
- while (len > 0) {
- int l;
-
- if (!strcmp(list, match))
- return 1;
- l = strlen(list) + 1;
- list += l;
- len -= l;
- }
- return 0;
-}
-
static const struct vio_device_id *vio_match_device(
const struct vio_device_id *matches,
const struct vio_dev *dev)
while (matches->type[0] || matches->compat[0]) {
int match = 1;
- if (matches->type[0]) {
- match &= type
- && !strcmp(matches->type, type);
- }
+ if (matches->type[0])
+ match &= !strcmp(matches->type, type);
+
if (matches->compat[0]) {
- match &= compat &&
- find_in_proplist(compat, matches->compat, len);
+ match &= len &&
+ of_find_in_proplist(compat, matches->compat, len);
}
if (match)
return matches;
struct vio_dev *vdev = to_vio_dev(dev);
const char *str = "none";
- if (!strcmp(vdev->type, "network"))
+ if (!strcmp(vdev->type, "vnet-port"))
str = "vnet";
- else if (!strcmp(vdev->type, "block"))
+ else if (!strcmp(vdev->type, "vdc-port"))
str = "vdisk";
return sprintf(buf, "%s\n", str);
}
EXPORT_SYMBOL(vio_unregister_driver);
-struct mdesc_node *vio_find_endpoint(struct vio_dev *vdev)
-{
- struct mdesc_node *endp, *mp = vdev->mp;
- int i;
-
- endp = NULL;
- for (i = 0; i < mp->num_arcs; i++) {
- struct mdesc_node *t;
-
- if (strcmp(mp->arcs[i].name, "fwd"))
- continue;
-
- t = mp->arcs[i].arc;
- if (strcmp(t->name, "channel-endpoint"))
- continue;
-
- endp = t;
- break;
- }
-
- return endp;
-}
-EXPORT_SYMBOL(vio_find_endpoint);
-
-static void __devinit vio_dev_release(struct device *dev)
+static void vio_dev_release(struct device *dev)
{
kfree(to_vio_dev(dev));
}
static struct vio_dev *root_vdev;
static u64 cdev_cfg_handle;
-static struct vio_dev *vio_create_one(struct mdesc_node *mp,
+static void vio_fill_channel_info(struct mdesc_handle *hp, u64 mp,
+ struct vio_dev *vdev)
+{
+ u64 a;
+
+ mdesc_for_each_arc(a, hp, mp, MDESC_ARC_TYPE_FWD) {
+ const u64 *chan_id;
+ const u64 *irq;
+ u64 target;
+
+ target = mdesc_arc_target(hp, a);
+
+ irq = mdesc_get_property(hp, target, "tx-ino", NULL);
+ if (irq)
+ vdev->tx_irq = sun4v_build_virq(cdev_cfg_handle, *irq);
+
+ irq = mdesc_get_property(hp, target, "rx-ino", NULL);
+ if (irq)
+ vdev->rx_irq = sun4v_build_virq(cdev_cfg_handle, *irq);
+
+ chan_id = mdesc_get_property(hp, target, "id", NULL);
+ if (chan_id)
+ vdev->channel_id = *chan_id;
+ }
+}
+
+static struct vio_dev *vio_create_one(struct mdesc_handle *hp, u64 mp,
struct device *parent)
{
- const char *type, *compat;
+ const char *type, *compat, *bus_id_name;
struct device_node *dp;
struct vio_dev *vdev;
- const u64 *irq;
- int err, clen;
+ int err, tlen, clen;
+ const u64 *id, *cfg_handle;
+ u64 a;
- type = md_get_property(mp, "device-type", NULL);
+ type = mdesc_get_property(hp, mp, "device-type", &tlen);
if (!type) {
- type = md_get_property(mp, "name", NULL);
- if (!type)
- type = mp->name;
+ type = mdesc_get_property(hp, mp, "name", &tlen);
+ if (!type) {
+ type = mdesc_node_name(hp, mp);
+ tlen = strlen(type) + 1;
+ }
+ }
+ if (tlen > VIO_MAX_TYPE_LEN) {
+ printk(KERN_ERR "VIO: Type string [%s] is too long.\n",
+ type);
+ return NULL;
+ }
+
+ id = mdesc_get_property(hp, mp, "id", NULL);
+
+ cfg_handle = NULL;
+ mdesc_for_each_arc(a, hp, mp, MDESC_ARC_TYPE_BACK) {
+ u64 target;
+
+ target = mdesc_arc_target(hp, a);
+ cfg_handle = mdesc_get_property(hp, target,
+ "cfg-handle", NULL);
+ if (cfg_handle)
+ break;
+ }
+
+ bus_id_name = type;
+ if (!strcmp(type, "domain-services-port"))
+ bus_id_name = "ds";
+
+ if (strlen(bus_id_name) >= BUS_ID_SIZE - 4) {
+ printk(KERN_ERR "VIO: bus_id_name [%s] is too long.\n",
+ bus_id_name);
+ return NULL;
+ }
+
+ compat = mdesc_get_property(hp, mp, "device-type", &clen);
+ if (!compat) {
+ clen = 0;
+ } else if (clen > VIO_MAX_COMPAT_LEN) {
+ printk(KERN_ERR "VIO: Compat len %d for [%s] is too long.\n",
+ clen, type);
+ return NULL;
}
- compat = md_get_property(mp, "device-type", &clen);
vdev = kzalloc(sizeof(*vdev), GFP_KERNEL);
if (!vdev) {
}
vdev->mp = mp;
- vdev->type = type;
- vdev->compat = compat;
+ memcpy(vdev->type, type, tlen);
+ if (compat)
+ memcpy(vdev->compat, compat, clen);
+ else
+ memset(vdev->compat, 0, sizeof(vdev->compat));
vdev->compat_len = clen;
- irq = md_get_property(mp, "tx-ino", NULL);
- if (irq)
- mp->irqs[0] = sun4v_build_virq(cdev_cfg_handle, *irq);
+ vdev->channel_id = ~0UL;
+ vdev->tx_irq = ~0;
+ vdev->rx_irq = ~0;
- irq = md_get_property(mp, "rx-ino", NULL);
- if (irq)
- mp->irqs[1] = sun4v_build_virq(cdev_cfg_handle, *irq);
+ vio_fill_channel_info(hp, mp, vdev);
+
+ if (!id) {
+ dev_set_name(&vdev->dev, "%s", bus_id_name);
+ vdev->dev_no = ~(u64)0;
+ } else if (!cfg_handle) {
+ dev_set_name(&vdev->dev, "%s-%lu", bus_id_name, *id);
+ vdev->dev_no = *id;
+ } else {
+ dev_set_name(&vdev->dev, "%s-%lu-%lu", bus_id_name,
+ *cfg_handle, *id);
+ vdev->dev_no = *cfg_handle;
+ }
- snprintf(vdev->dev.bus_id, BUS_ID_SIZE, "%lx", mp->node);
vdev->dev.parent = parent;
vdev->dev.bus = &vio_bus_type;
vdev->dev.release = vio_dev_release;
}
vdev->dp = dp;
+ printk(KERN_INFO "VIO: Adding device %s\n", dev_name(&vdev->dev));
+
err = device_register(&vdev->dev);
if (err) {
printk(KERN_ERR "VIO: Could not register device %s, err=%d\n",
- vdev->dev.bus_id, err);
+ dev_name(&vdev->dev), err);
kfree(vdev);
return NULL;
}
return vdev;
}
-static void walk_tree(struct mdesc_node *n, struct vio_dev *parent)
+static void vio_add(struct mdesc_handle *hp, u64 node)
{
- int i;
-
- for (i = 0; i < n->num_arcs; i++) {
- struct mdesc_node *mp;
- struct vio_dev *vdev;
+ (void) vio_create_one(hp, node, &root_vdev->dev);
+}
- if (strcmp(n->arcs[i].name, "fwd"))
- continue;
+static int vio_md_node_match(struct device *dev, void *arg)
+{
+ struct vio_dev *vdev = to_vio_dev(dev);
- mp = n->arcs[i].arc;
+ if (vdev->mp == (u64) arg)
+ return 1;
- vdev = vio_create_one(mp, &parent->dev);
- if (vdev && mp->num_arcs)
- walk_tree(mp, vdev);
- }
+ return 0;
}
-static void create_devices(struct mdesc_node *root)
+static void vio_remove(struct mdesc_handle *hp, u64 node)
{
- struct mdesc_node *mp;
+ struct device *dev;
- root_vdev = vio_create_one(root, NULL);
- if (!root_vdev) {
- printk(KERN_ERR "VIO: Coult not create root device.\n");
- return;
+ dev = device_find_child(&root_vdev->dev, (void *) node,
+ vio_md_node_match);
+ if (dev) {
+ printk(KERN_INFO "VIO: Removing device %s\n", dev_name(dev));
+
+ device_unregister(dev);
}
+}
+
+static struct mdesc_notifier_client vio_device_notifier = {
+ .add = vio_add,
+ .remove = vio_remove,
+ .node_name = "virtual-device-port",
+};
- walk_tree(root, root_vdev);
+/* We are only interested in domain service ports under the
+ * "domain-services" node. On control nodes there is another port
+ * under "openboot" that we should not mess with as aparently that is
+ * reserved exclusively for OBP use.
+ */
+static void vio_add_ds(struct mdesc_handle *hp, u64 node)
+{
+ int found;
+ u64 a;
- /* Domain services is odd as it doesn't sit underneath the
- * channel-devices node, so we plug it in manually.
- */
- mp = md_find_node_by_name(NULL, "domain-services");
- if (mp) {
- struct vio_dev *parent = vio_create_one(mp, &root_vdev->dev);
+ found = 0;
+ mdesc_for_each_arc(a, hp, node, MDESC_ARC_TYPE_BACK) {
+ u64 target = mdesc_arc_target(hp, a);
+ const char *name = mdesc_node_name(hp, target);
- if (parent)
- walk_tree(mp, parent);
+ if (!strcmp(name, "domain-services")) {
+ found = 1;
+ break;
+ }
}
+
+ if (found)
+ (void) vio_create_one(hp, node, &root_vdev->dev);
}
+static struct mdesc_notifier_client vio_ds_notifier = {
+ .add = vio_add_ds,
+ .remove = vio_remove,
+ .node_name = "domain-services-port",
+};
+
const char *channel_devices_node = "channel-devices";
const char *channel_devices_compat = "SUNW,sun4v-channel-devices";
const char *cfg_handle_prop = "cfg-handle";
static int __init vio_init(void)
{
- struct mdesc_node *root;
+ struct mdesc_handle *hp;
const char *compat;
const u64 *cfg_handle;
int err, len;
+ u64 root;
+
+ err = bus_register(&vio_bus_type);
+ if (err) {
+ printk(KERN_ERR "VIO: Could not register bus type err=%d\n",
+ err);
+ return err;
+ }
+
+ hp = mdesc_grab();
+ if (!hp)
+ return 0;
- root = md_find_node_by_name(NULL, channel_devices_node);
- if (!root) {
+ root = mdesc_node_by_name(hp, MDESC_NODE_NULL, channel_devices_node);
+ if (root == MDESC_NODE_NULL) {
printk(KERN_INFO "VIO: No channel-devices MDESC node.\n");
+ mdesc_release(hp);
return 0;
}
cdev_node = of_find_node_by_name(NULL, "channel-devices");
+ err = -ENODEV;
if (!cdev_node) {
printk(KERN_INFO "VIO: No channel-devices OBP node.\n");
- return -ENODEV;
+ goto out_release;
}
- compat = md_get_property(root, "compatible", &len);
+ compat = mdesc_get_property(hp, root, "compatible", &len);
if (!compat) {
printk(KERN_ERR "VIO: Channel devices lacks compatible "
"property\n");
- return -ENODEV;
+ goto out_release;
}
- if (!find_in_proplist(compat, channel_devices_compat, len)) {
+ if (!of_find_in_proplist(compat, channel_devices_compat, len)) {
printk(KERN_ERR "VIO: Channel devices node lacks (%s) "
"compat entry.\n", channel_devices_compat);
- return -ENODEV;
+ goto out_release;
}
- cfg_handle = md_get_property(root, cfg_handle_prop, NULL);
+ cfg_handle = mdesc_get_property(hp, root, cfg_handle_prop, NULL);
if (!cfg_handle) {
printk(KERN_ERR "VIO: Channel devices lacks %s property\n",
cfg_handle_prop);
- return -ENODEV;
+ goto out_release;
}
cdev_cfg_handle = *cfg_handle;
- err = bus_register(&vio_bus_type);
- if (err) {
- printk(KERN_ERR "VIO: Could not register bus type err=%d\n",
- err);
- return err;
+ root_vdev = vio_create_one(hp, root, NULL);
+ err = -ENODEV;
+ if (!root_vdev) {
+ printk(KERN_ERR "VIO: Coult not create root device.\n");
+ goto out_release;
}
- create_devices(root);
+ mdesc_register_notifier(&vio_device_notifier);
+ mdesc_register_notifier(&vio_ds_notifier);
- return 0;
+ mdesc_release(hp);
+
+ return err;
+
+out_release:
+ mdesc_release(hp);
+ return err;
}
postcore_initcall(vio_init);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff