[PATCH v2 41/62] drm/nouveau/gsp: add hal for fifo.rsvd_chids
Ben Skeggs
bskeggs at nvidia.com
Sun May 11 21:07:01 UTC 2025
555.42.02 reserves some CHIDs for internal use.
Signed-off-by: Ben Skeggs <bskeggs at nvidia.com>
Reviewed-by: Dave Airlie <airlied at redhat.com>
Reviewed-by: Timur Tabi <ttabi at nvidia.com>
Tested-by: Timur Tabi <ttabi at nvidia.com>
---
drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/r535/fifo.c | 7 ++++---
drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/r535/gr.c | 3 ++-
drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/rm.h | 1 +
3 files changed, 7 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/r535/fifo.c b/drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/r535/fifo.c
index a9d3979de4b1..ed57d311bac4 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/r535/fifo.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/r535/fifo.c
@@ -542,13 +542,14 @@ r535_fifo_runl_ctor(struct nvkm_fifo *fifo)
struct nvkm_rm *rm = gsp->rm;
struct nvkm_runl *runl;
struct nvkm_engn *engn;
- u32 cgids = 2048;
u32 chids = 2048;
+ u32 first = rm->api->fifo->rsvd_chids;
+ u32 count = chids - first;
int ret;
NV2080_CTRL_FIFO_GET_DEVICE_INFO_TABLE_PARAMS *ctrl;
- if ((ret = nvkm_chid_new(&nvkm_chan_event, subdev, cgids, 0, cgids, &fifo->cgid)) ||
- (ret = nvkm_chid_new(&nvkm_chan_event, subdev, chids, 0, chids, &fifo->chid)))
+ if ((ret = nvkm_chid_new(&nvkm_chan_event, subdev, chids, first, count, &fifo->cgid)) ||
+ (ret = nvkm_chid_new(&nvkm_chan_event, subdev, chids, first, count, &fifo->chid)))
return ret;
ctrl = nvkm_gsp_rm_ctrl_rd(&gsp->internal.device.subdevice,
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/r535/gr.c b/drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/r535/gr.c
index b86c5012f6ad..1ef2919ced9d 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/r535/gr.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/r535/gr.c
@@ -298,7 +298,8 @@ r535_gr_oneinit(struct nvkm_gr *base)
if (ret)
goto done;
- ret = rm->api->fifo->chan.alloc(&gsp->internal.device, NVKM_RM_CHAN(0), 1, 0, true, 0,
+ ret = rm->api->fifo->chan.alloc(&gsp->internal.device, NVKM_RM_CHAN(0),
+ 1, 0, true, rm->api->fifo->rsvd_chids,
nvkm_memory_addr(golden.inst),
nvkm_memory_addr(golden.inst) + 0x1000,
nvkm_memory_addr(golden.inst) + 0x2000,
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/rm.h b/drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/rm.h
index 29663dbe99e1..a370beda3c71 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/rm.h
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/rm.h
@@ -101,6 +101,7 @@ struct nvkm_rm_api {
int (*xlat_rm_engine_type)(u32 rm_engine_type,
enum nvkm_subdev_type *, int *nv2080_type);
int (*ectx_size)(struct nvkm_fifo *);
+ unsigned rsvd_chids;
struct {
int (*alloc)(struct nvkm_gsp_device *, u32 handle,
u32 nv2080_engine_type, u8 runq, bool priv, int chid,
--
2.49.0
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