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authorSukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>2018-02-12 14:57:09 -0800
committerStewart Smith <stewart@linux.vnet.ibm.com>2018-02-14 23:27:35 -0600
commit31e5e988632f6554f70ed3e4072aef4245ee7b73 (patch)
tree18fcb51994c437b0e46f56a527edcf5bb0bc3d10 /include
parentf397cc30bdf88353c39c58d9085d42c5fa124190 (diff)
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vas: Disable VAS/NX-842 on some P9 revisions
VAS/NX-842 are not functional on some P9 revisions, so disable them in hardware and skip creating their device tree nodes. Since the intent is to prevent OS from configuring VAS/NX, we remove only the platform device nodes but leave the VAS/NX DT nodes under xscom (i.e we don't skip add_vas_node() in hdata/spira.c) Thanks to input from Michael Ellerman, Michael Neuling. Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Reviewed-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
Diffstat (limited to 'include')
-rw-r--r--include/vas.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/vas.h b/include/vas.h
index 6bc2a1c..f8c7add 100644
--- a/include/vas.h
+++ b/include/vas.h
@@ -37,6 +37,7 @@
*/
extern void vas_init(void);
+extern __attrconst bool vas_nx_enabled(void);
extern __attrconst uint64_t vas_get_hvwc_mmio_bar(const int chipid);
extern __attrconst uint64_t vas_get_wcbs_bar(int chipid);