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, 6 insertions, 4 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gk20a.h b/drivers/gpu/nvgpu/gk20a/gk20a.h
index 02c7d0d9..40656edd 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/gk20a.h
@@ -967,6 +967,8 @@ struct gpu_ops {
                 void (*isr_stall)(struct gk20a *g);
                 bool (*is_intr_hub_pending)(struct gk20a *g, u32 mc_intr);
                 bool (*is_intr_nvlink_pending)(struct gk20a *g, u32 mc_intr);
+                bool (*is_stall_and_eng_intr_pending)(struct gk20a *g,
+                                                                u32 act_eng_id);
                 u32 (*intr_stall)(struct gk20a *g);
                 void (*intr_stall_pause)(struct gk20a *g);
                 void (*intr_stall_resume)(struct gk20a *g);
@@ -1064,10 +1066,10 @@ struct gpu_ops {
                 int (*check_priv_security)(struct gk20a *g);
         } fuse;
         struct {
-                u32 (*init)(struct gk20a *g);
-                u32 (*discover_ioctrl)(struct gk20a *g);
-                u32 (*discover_link)(struct gk20a *g);
-                u32 (*isr)(struct gk20a *g);
+                int (*init)(struct gk20a *g);
+                int (*discover_ioctrl)(struct gk20a *g);
+                int (*discover_link)(struct gk20a *g);
+                int (*isr)(struct gk20a *g);
                 /* API */
                 int (*link_early_init)(struct gk20a *g, unsigned long mask);
                 u32 (*link_get_mode)(struct gk20a *g, u32 link_id);