diff options
Diffstat (limited to 'kernel/gsp_phys_gpu.c')
| -rw-r--r-- | kernel/gsp_phys_gpu.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/kernel/gsp_phys_gpu.c b/kernel/gsp_phys_gpu.c index b1945ee..95bd627 100644 --- a/kernel/gsp_phys_gpu.c +++ b/kernel/gsp_phys_gpu.c @@ -974,6 +974,53 @@ int gsp_phys_rmcall_gr_nowrite_retry_value(void) EXPORT_SYMBOL_GPL(gsp_phys_rmcall_gr_nowrite_retry_value); /* + * F2 fast re-arm (gsp_phys_gr_retry_fast; default 1). r198: the first + * forwarded-launch timeout costs 2x5 s before the fresh-entry ladder runs, + * yet the m155 extended re-arm (lane-enable replay + GPFIFO/TSG schedule + + * doorbell) plus one fresh ring entry recovers most of these launches. With + * this on, the first timeout immediately runs that re-arm + a fresh entry + * and re-polls with a short window; only if that still fails does the + * historical timeout ladder continue. Set to 0 for today's exact behavior. + */ +static int gsp_phys_gr_retry_fast_param = 1; +module_param_named(gsp_phys_gr_retry_fast, + gsp_phys_gr_retry_fast_param, int, 0644); +MODULE_PARM_DESC(gsp_phys_gr_retry_fast, + "On the first GR launch timeout, run the extended re-arm + a fresh ring entry immediately and re-poll briefly (default 1; 0 = legacy ladder timing)"); + +int gsp_phys_gr_retry_fast_value(void) +{ + return gsp_phys_gr_retry_fast_param; +} +EXPORT_SYMBOL_GPL(gsp_phys_gr_retry_fast_value); + +/* + * F2 first-poll window (gsp_phys_gr_first_poll_ms; default 2500, clamped to + * [1000, 30000]). With gsp_phys_gr_retry_fast=1 the FIRST poll window of a + * forwarded GR launch (before any re-arm) uses this instead of the fixed 5 s, + * so the fast re-arm path above starts earlier; with retry_fast=0 the launch + * keeps today's exact behavior and this knob is not read. The later ladder + * windows keep their own constants. + */ +static unsigned int gsp_phys_gr_first_poll_ms_param = 2500u; +module_param_named(gsp_phys_gr_first_poll_ms, + gsp_phys_gr_first_poll_ms_param, uint, 0644); +MODULE_PARM_DESC(gsp_phys_gr_first_poll_ms, + "First GR launch poll window in ms, clamped [1000,30000], read when gsp_phys_gr_retry_fast=1 (default 2500)"); + +unsigned int gsp_phys_gr_first_poll_ms_value(void) +{ + unsigned int v = gsp_phys_gr_first_poll_ms_param; + + if (v < 1000u) + v = 1000u; + if (v > 30000u) + v = 30000u; + return v; +} +EXPORT_SYMBOL_GPL(gsp_phys_gr_first_poll_ms_value); + +/* * m69 window-0 shadow pool (gsp_phys_rmcall_gr_shadow_win0; default 0). When * set, the forwarded GR launch copies the QMD's program/param pages into the * window-0 shadow pool (module pages at VAs 0x108000..0x10f000, PTEs planted |