gpu: nvgpu: gv100: nvlink endpoint driver

The following changes implements the initial (as per bringup) nvlink driver.

(1) SW initialization of nvlink core driver structures
(2) Nvlink interrupt handling
(3) Device initialization (IOCTRL, pll and clocks, device level intr)
(4) Falcon support for minion
(5) Minion load and bootstrapping
(6) Link initialization and DL PROD settings
(7) Device Interface init (and switching HSHUB to nvlink)
(8) HS set/get mode for both link and sublink
(9) Topology discovery and VBIOS settings.
(10) Ensures we get physical contiguous memory when Nvlink is enabled

This driver includes a hack for the current single dev/single link limitation.

JIRA: EVLR-2331
JIRA: EVLR-2330
JIRA: EVLR-2329
JIRA: EVLR-2328

Change-Id: Idca9a819179376cc655784482b24b575a52fa9e5
Signed-off-by: Thomas Fleury <tfleury@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1656790
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/include/nvgpu/hw/gv100/hw_minion_gv100.h b/drivers/gpu/nvgpu/include/nvgpu/hw/gv100/hw_minion_gv100.h
index c59a6e6b..a57ea97a 100644
--- a/drivers/gpu/nvgpu/include/nvgpu/hw/gv100/hw_minion_gv100.h
+++ b/drivers/gpu/nvgpu/include/nvgpu/hw/gv100/hw_minion_gv100.h
@@ -892,6 +892,14 @@ static inline u32 minion_nvlink_link_intr_code_dlreq_f(void)
 {
         return 0x2U;
 }
+static inline u32 minion_nvlink_link_intr_code_pmdisabled_v(void)
+{
+        return 0x00000003U;
+}
+static inline u32 minion_nvlink_link_intr_code_pmdisabled_f(void)
+{
+        return 0x3U;
+}
 static inline u32 minion_nvlink_link_intr_subcode_f(u32 v)
 {
         return (v & 0xffU) << 8U;