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drm/amdkfd: Enable GWS based on FW Support

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Rather than only enabling GWS support based on the hws_gws_support
modparm, also check whether the GPU's HWS firmware supports GWS.
Leave the old modparm in place in case users want to test GWS
on GPUs not yet in the support list.

v2: fix broken syntax from the first patch.

Signed-off-by: Joseph Greathouse <Joseph.Greathouse@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Joseph Greathouse 2020-01-15 15:23:44 -06:00 • committed by Alex Deucher
parent 5bb4b78be9
commit 29633d0e20
5 changed files with 41 additions and 17 deletions
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7
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
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@ -689,13 +689,12 @@ MODULE_PARM_DESC(halt_if_hws_hang, "Halt if HWS hang is detected (0 = off (defau
/**
* DOC: hws_gws_support(bool)
* Whether HWS support gws barriers. Default value: false (not supported)
* This will be replaced with a MEC firmware version check once firmware
* is ready
* Assume that HWS supports GWS barriers regardless of what firmware version
* check says. Default value: false (rely on MEC2 firmware version check).
*/
bool hws_gws_support;
module_param(hws_gws_support, bool, 0444);
MODULE_PARM_DESC(hws_gws_support, "MEC FW support gws barriers (false = not supported (Default), true = supported)");
MODULE_PARM_DESC(hws_gws_support, "Assume MEC2 FW supports GWS barriers (false = rely on FW version check (Default), true = force supported)");
/**
* DOC: queue_preemption_timeout_ms (int)