Author: jimharris
Date: Tue Mar 26 21:42:53 2013
New Revision: 248764
URL: http://svnweb.freebsd.org/changeset/base/248764
Log:
Set Pre-boot Software Load Count to 0 at the end of the controller
start process.
The spec indicates the OS driver should use Set Features (Software
Progress Marker) to set the pre-boot software load count to 0
after the OS driver has successfully been initialized. This allows
pre-boot software to determine if there have been any issues with the
OS loading.
Sponsored by: Intel
Reviewed by: carl
Modified:
head/sys/dev/nvme/nvme_ctrlr.c
Modified: head/sys/dev/nvme/nvme_ctrlr.c
==============================================================================
--- head/sys/dev/nvme/nvme_ctrlr.c Tue Mar 26 21:19:26 2013
(r248763)
+++ head/sys/dev/nvme/nvme_ctrlr.c Tue Mar 26 21:42:53 2013
(r248764)
@@ -762,6 +762,16 @@ nvme_ctrlr_start(void *ctrlr_arg)
for (i = 0; i < ctrlr->num_io_queues; i++)
nvme_io_qpair_enable(&ctrlr->ioq[i]);
+
+ /*
+ * Clear software progress marker to 0, to indicate to pre-boot
+ * software that OS driver load was successful.
+ *
+ * Chatham does not support this feature.
+ */
+ if (pci_get_devid(ctrlr->dev) != CHATHAM_PCI_ID)
+ nvme_ctrlr_cmd_set_feature(ctrlr,
+ NVME_FEAT_SOFTWARE_PROGRESS_MARKER, 0, NULL, 0, NULL, NULL);
}
void
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