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drm/i915/guc: Support for extended GuC notification messages 

GuC may send notification messages with payload larger than
single u32. Prepare driver to accept longer messages.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Vinay Belgaumkar <vinay.belgaumkar@intel.com>
Cc: Michal Winiarski <michal.winiarski@intel.com>
Cc: Tomasz Lis <tomasz.lis@intel.com>
Reviewed-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/20190321120004.53012-1-michal.wajdeczko@intel.com
hifive-unleashed-5.2
Michal Wajdeczko 2019-03-21 12:00:04 +00:00 committed by Chris Wilson
parent ddad5babb0
commit 47c3b5e9b3
3 changed files with 16 additions and 6 deletions
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14
drivers/gpu/drm/i915/intel_guc.c
View File

@ -484,17 +484,25 @@ void intel_guc_to_host_event_handler_mmio(struct intel_guc *guc)
spin_unlock(&guc->irq_lock);
enable_rpm_wakeref_asserts(dev_priv);
intel_guc_to_host_process_recv_msg(guc, msg);
intel_guc_to_host_process_recv_msg(guc, &msg, 1);
}
void intel_guc_to_host_process_recv_msg(struct intel_guc *guc, u32 msg)
int intel_guc_to_host_process_recv_msg(struct intel_guc *guc,
const u32 *payload, u32 len)
{
u32 msg;
if (unlikely(!len))
return -EPROTO;
/* Make sure to handle only enabled messages */
msg &= guc->msg_enabled_mask;
msg = payload[0] & guc->msg_enabled_mask;
if (msg & (INTEL_GUC_RECV_MSG_FLUSH_LOG_BUFFER |
INTEL_GUC_RECV_MSG_CRASH_DUMP_POSTED))
intel_guc_log_handle_flush_event(&guc->log);
return 0;
}
int intel_guc_sample_forcewake(struct intel_guc *guc)

3
drivers/gpu/drm/i915/intel_guc.h
View File

@ -165,7 +165,8 @@ int intel_guc_send_mmio(struct intel_guc *guc, const u32 *action, u32 len,
void intel_guc_to_host_event_handler(struct intel_guc *guc);
void intel_guc_to_host_event_handler_nop(struct intel_guc *guc);
void intel_guc_to_host_event_handler_mmio(struct intel_guc *guc);
void intel_guc_to_host_process_recv_msg(struct intel_guc *guc, u32 msg);
int intel_guc_to_host_process_recv_msg(struct intel_guc *guc,
const u32 *payload, u32 len);
int intel_guc_sample_forcewake(struct intel_guc *guc);
int intel_guc_auth_huc(struct intel_guc *guc, u32 rsa_offset);
int intel_guc_suspend(struct intel_guc *guc);

5
drivers/gpu/drm/i915/intel_guc_ct.c
View File

@ -701,14 +701,15 @@ 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);
int ret;
CT_DEBUG_DRIVER("CT: request %x %*ph\n", action, 4 * len, payload);
switch (action) {
case INTEL_GUC_ACTION_DEFAULT:
if (unlikely(len < 1))
ret = intel_guc_to_host_process_recv_msg(guc, payload, len);
if (unlikely(ret))
goto fail_unexpected;
intel_guc_to_host_process_recv_msg(guc, *payload);
break;
default: