[PATCH] I2O: new sysfs attributes and Adaptec specific block device access and 64-bit DMA support
Changes:
- Added Bus-OSM which could be used by user space programs to reset a
channel on the controller
- Make ioctl's in Config-OSM obsolete in prefer for sysfs attributes and
move those to its own file
- Added sysfs attribute for firmware read and write access for I2O
controllers
- Added special handling of firmware read and write access for Adaptec
controllers
- Added vendor id and product id as sysfs-attribute to Executive classes
- Added automatic notification of LCT change handling to Exec-OSM
- Added flushing function to Block-OSM for later barrier implementation
- Use PRIVATE messages for Block access on Adaptec controllers, which are
faster then BLOCK class access
- Cleaned up support for Promise controller
- New messages are now detected using the IRQ status register as
suggested by the I2O spec
- Added i2o_dma_high() and i2o_dma_low() functions
- Added facility for SG tablesize calculation when using 32-bit and
64-bit DMA addresses
- Added i2o_dma_map_single() and i2o_dma_map_sg() which could build the
SG list for 32-bit as well as 64-bit DMA addresses
Signed-off-by: Markus Lidel <Markus.Lidel@shadowconnect.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/message/i2o/exec-osm.c b/drivers/message/i2o/exec-osm.c
index 5581344..0160221 100644
--- a/drivers/message/i2o/exec-osm.c
+++ b/drivers/message/i2o/exec-osm.c
@@ -206,6 +206,7 @@
u32 context)
{
struct i2o_exec_wait *wait, *tmp;
+ unsigned long flags;
static spinlock_t lock = SPIN_LOCK_UNLOCKED;
int rc = 1;
@@ -216,11 +217,13 @@
* already expired. Not much we can do about that except log it for
* debug purposes, increase timeout, and recompile.
*/
- spin_lock(&lock);
+ spin_lock_irqsave(&lock, flags);
list_for_each_entry_safe(wait, tmp, &i2o_exec_wait_list, list) {
if (wait->tcntxt == context) {
list_del(&wait->list);
+ spin_unlock_irqrestore(&lock, flags);
+
wait->m = m;
wait->msg = msg;
wait->complete = 1;
@@ -242,13 +245,11 @@
rc = -1;
}
- spin_unlock(&lock);
-
return rc;
}
}
- spin_unlock(&lock);
+ spin_unlock_irqrestore(&lock, flags);
osm_warn("%s: Bogus reply in POST WAIT (tr-context: %08x)!\n", c->name,
context);
@@ -257,6 +258,50 @@
};
/**
+ * i2o_exec_show_vendor_id - Displays Vendor ID of controller
+ * @d: device of which the Vendor ID should be displayed
+ * @buf: buffer into which the Vendor ID should be printed
+ *
+ * Returns number of bytes printed into buffer.
+ */
+static ssize_t i2o_exec_show_vendor_id(struct device *d, char *buf)
+{
+ struct i2o_device *dev = to_i2o_device(d);
+ u16 id;
+
+ if (i2o_parm_field_get(dev, 0x0000, 0, &id, 2)) {
+ sprintf(buf, "0x%04x", id);
+ return strlen(buf) + 1;
+ }
+
+ return 0;
+};
+
+/**
+ * i2o_exec_show_product_id - Displays Product ID of controller
+ * @d: device of which the Product ID should be displayed
+ * @buf: buffer into which the Product ID should be printed
+ *
+ * Returns number of bytes printed into buffer.
+ */
+static ssize_t i2o_exec_show_product_id(struct device *d, char *buf)
+{
+ struct i2o_device *dev = to_i2o_device(d);
+ u16 id;
+
+ if (i2o_parm_field_get(dev, 0x0000, 1, &id, 2)) {
+ sprintf(buf, "0x%04x", id);
+ return strlen(buf) + 1;
+ }
+
+ return 0;
+};
+
+/* Exec-OSM device attributes */
+static DEVICE_ATTR(vendor_id, S_IRUGO, i2o_exec_show_vendor_id, NULL);
+static DEVICE_ATTR(product_id, S_IRUGO, i2o_exec_show_product_id, NULL);
+
+/**
* i2o_exec_probe - Called if a new I2O device (executive class) appears
* @dev: I2O device which should be probed
*
@@ -268,10 +313,16 @@
static int i2o_exec_probe(struct device *dev)
{
struct i2o_device *i2o_dev = to_i2o_device(dev);
+ struct i2o_controller *c = i2o_dev->iop;
i2o_event_register(i2o_dev, &i2o_exec_driver, 0, 0xffffffff);
- i2o_dev->iop->exec = i2o_dev;
+ c->exec = i2o_dev;
+
+ i2o_exec_lct_notify(c, c->lct->change_ind + 1);
+
+ device_create_file(dev, &dev_attr_vendor_id);
+ device_create_file(dev, &dev_attr_product_id);
return 0;
};
@@ -286,6 +337,9 @@
*/
static int i2o_exec_remove(struct device *dev)
{
+ device_remove_file(dev, &dev_attr_product_id);
+ device_remove_file(dev, &dev_attr_vendor_id);
+
i2o_event_register(to_i2o_device(dev), &i2o_exec_driver, 0, 0);
return 0;
@@ -297,12 +351,16 @@
*
* This function handles asynchronus LCT NOTIFY replies. It parses the
* new LCT and if the buffer for the LCT was to small sends a LCT NOTIFY
- * again.
+ * again, otherwise send LCT NOTIFY to get informed on next LCT change.
*/
static void i2o_exec_lct_modified(struct i2o_controller *c)
{
- if (i2o_device_parse_lct(c) == -EAGAIN)
- i2o_exec_lct_notify(c, 0);
+ u32 change_ind = 0;
+
+ if (i2o_device_parse_lct(c) != -EAGAIN)
+ change_ind = c->lct->change_ind + 1;
+
+ i2o_exec_lct_notify(c, change_ind);
};
/**