diff options
| author | Michal Wajdeczko <michal.wajdeczko@intel.com> | 2018-03-28 00:41:24 +0300 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2018-03-28 22:35:18 +0300 |
| commit | b6b0166d49f04ace13885a7ef42cb4a63ecf1f02 (patch) | |
| tree | 89800ace671bf6cde6173d0857d9f100bd9c2d26 /drivers/gpu/drm/i915/intel_guc_ct.c | |
| parent | 6c77a2b05841a4082f746bf58345209df57175c9 (diff) | |
| download | linux-b6b0166d49f04ace13885a7ef42cb4a63ecf1f02.tar.xz | |
drm/i915/guc: Handle default action received over CT
When running on platform with CTB based GuC communication enabled,
GuC to Host event data will be delivered as CT request message.
However, content of the data[1] of this CT message follows format
of the scratch register used in MMIO based communication, so some
code reuse is still possible.
v2: filter disabled messages (Daniele)
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Oscar Mateo <oscar.mateo@intel.com>
Reviewed-by: Michel Thierry <michel.thierry@intel.com> #1
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Acked-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20180327214124.70680-1-michal.wajdeczko@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/intel_guc_ct.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_guc_ct.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_guc_ct.c b/drivers/gpu/drm/i915/intel_guc_ct.c index aa810aded442..e8370846c2c9 100644 --- a/drivers/gpu/drm/i915/intel_guc_ct.c +++ b/drivers/gpu/drm/i915/intel_guc_ct.c @@ -694,8 +694,17 @@ static int ct_handle_response(struct intel_guc_ct *ct, const u32 *msg) static void ct_process_request(struct intel_guc_ct *ct, u32 action, u32 len, const u32 *payload) { + struct intel_guc *guc = ct_to_guc(ct); + switch (action) { + case INTEL_GUC_ACTION_DEFAULT: + if (unlikely(len < 1)) + goto fail_unexpected; + intel_guc_to_host_process_recv_msg(guc, *payload); + break; + default: +fail_unexpected: DRM_ERROR("CT: unexpected request %x %*phn\n", action, 4 * len, payload); break; |