diff options
Diffstat (limited to 'kernel/main.c')
| -rw-r--r-- | kernel/main.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/kernel/main.c b/kernel/main.c index 0e9452b..509c560 100644 --- a/kernel/main.c +++ b/kernel/main.c @@ -3129,6 +3129,30 @@ module_param_cb(sema_xw_mirror, &nv_vgpu_sema_xw_mirror_ops, NULL, 0200); MODULE_PARM_DESC(sema_xw_mirror, "Mirror X frame counter (cnt_pa,mem_pa; 0,0=stop)"); /* + * X/GL submit-kick completion clearer (SESSION 148 r873): PA of the u16 + * status word (member page offset 0xBE) that the X submit path arms to + * 0x8000 and polls until 0. Cleared host-side so the kick settles in ms. + * echo 0x1123456be > .../parameters/sema_xw_comp + * echo 0 > .../parameters/sema_xw_comp (stop) + */ +static int nv_vgpu_sema_xw_comp_set(const char *val, + const struct kernel_param *kp) +{ + u64 pa = 0; + + if (kstrtoull(val, 0, &pa)) + return -EINVAL; + return gsp_sema_service_xw_comp(pa); +} + +static const struct kernel_param_ops nv_vgpu_sema_xw_comp_ops = { + .set = nv_vgpu_sema_xw_comp_set, +}; + +module_param_cb(sema_xw_comp, &nv_vgpu_sema_xw_comp_ops, NULL, 0200); +MODULE_PARM_DESC(sema_xw_comp, "Clear X submit member status at PA (0=stop)"); + +/* * Debug: search the whole emulated vidmem for an 8-byte pattern: * echo 0x0000000400000001,16 > .../parameters/sema_vidmem_find */ |