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drm/i915/guc: Prepare send() function to accept bigger response

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This is a preparation step for the upcoming patches.
We already can return some small data decoded from the command
status, but we will need more in the future.

v2: add explicit response buf size
v3: squash with helper patch

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Oscar Mateo <oscar.mateo@intel.com>
Cc: Michel Thierry <michel.thierry@intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Reviewed-by: Michel Thierry <michel.thierry@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20180326194829.58836-4-michal.wajdeczko@intel.com
This commit is contained in:
Michal Wajdeczko 2018-03-26 19:48:20 +00:00 committed by Chris Wilson
parent b839a869df
commit e09af3a6a6
3 changed files with 22 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/gpu/drm/i915/intel_guc.c
View File

@ -310,7 +310,8 @@ void intel_guc_init_params(struct intel_guc *guc)
intel_uncore_forcewake_put(dev_priv, FORCEWAKE_BLITTER);
}
int intel_guc_send_nop(struct intel_guc *guc, const u32 *action, u32 len)
int intel_guc_send_nop(struct intel_guc *guc, const u32 *action, u32 len,
u32 *response_buf, u32 response_buf_size)
{
WARN(1, "Unexpected send: action=%#x\n", *action);
return -ENODEV;
@ -319,7 +320,8 @@ int intel_guc_send_nop(struct intel_guc *guc, const u32 *action, u32 len)
/*
* This function implements the MMIO based host to GuC interface.
*/
int intel_guc_send_mmio(struct intel_guc *guc, const u32 *action, u32 len)
int intel_guc_send_mmio(struct intel_guc *guc, const u32 *action, u32 len,
u32 *response_buf, u32 response_buf_size)
{
struct drm_i915_private *dev_priv = guc_to_i915(guc);
u32 status;

18
drivers/gpu/drm/i915/intel_guc.h
View File

@ -88,7 +88,8 @@ struct intel_guc {
struct mutex send_mutex;
/* GuC's FW specific send function */
int (*send)(struct intel_guc *guc, const u32 *data, u32 len);
int (*send)(struct intel_guc *guc, const u32 *data, u32 len,
u32 *response_buf, u32 response_buf_size);
/* GuC's FW specific notify function */
void (*notify)(struct intel_guc *guc);
@ -97,7 +98,14 @@ struct intel_guc {
static
inline int intel_guc_send(struct intel_guc *guc, const u32 *action, u32 len)
{
return guc->send(guc, action, len);
return guc->send(guc, action, len, NULL, 0);
}
static inline int
intel_guc_send_and_receive(struct intel_guc *guc, const u32 *action, u32 len,
u32 *response_buf, u32 response_buf_size)
{
return guc->send(guc, action, len, response_buf, response_buf_size);
}
static inline void intel_guc_notify(struct intel_guc *guc)
@ -140,8 +148,10 @@ int intel_guc_init_wq(struct intel_guc *guc);
void intel_guc_fini_wq(struct intel_guc *guc);
int intel_guc_init(struct intel_guc *guc);
void intel_guc_fini(struct intel_guc *guc);
int intel_guc_send_nop(struct intel_guc *guc, const u32 *action, u32 len);
int intel_guc_send_mmio(struct intel_guc *guc, const u32 *action, u32 len);
int intel_guc_send_nop(struct intel_guc *guc, const u32 *action, u32 len,
u32 *response_buf, u32 response_buf_size);
int intel_guc_send_mmio(struct intel_guc *guc, const u32 *action, u32 len,
u32 *response_buf, u32 response_buf_size);
void intel_guc_to_host_event_handler(struct intel_guc *guc);
int intel_guc_sample_forcewake(struct intel_guc *guc);
int intel_guc_auth_huc(struct intel_guc *guc, u32 rsa_offset);

7
drivers/gpu/drm/i915/intel_guc_ct.c
View File

@ -88,7 +88,7 @@ static int guc_action_register_ct_buffer(struct intel_guc *guc,
int err;
/* Can't use generic send(), CT registration must go over MMIO */
err = intel_guc_send_mmio(guc, action, ARRAY_SIZE(action));
err = intel_guc_send_mmio(guc, action, ARRAY_SIZE(action), NULL, 0);
if (err)
DRM_ERROR("CT: register %s buffer failed; err=%d\n",
guc_ct_buffer_type_to_str(type), err);
@ -107,7 +107,7 @@ static int guc_action_deregister_ct_buffer(struct intel_guc *guc,
int err;
/* Can't use generic send(), CT deregistration must go over MMIO */
err = intel_guc_send_mmio(guc, action, ARRAY_SIZE(action));
err = intel_guc_send_mmio(guc, action, ARRAY_SIZE(action), NULL, 0);
if (err)
DRM_ERROR("CT: deregister %s buffer failed; owner=%d err=%d\n",
guc_ct_buffer_type_to_str(type), owner, err);
@ -408,7 +408,8 @@ static int ctch_send(struct intel_guc *guc,
/*
* Command Transport (CT) buffer based GuC send function.
*/
static int intel_guc_send_ct(struct intel_guc *guc, const u32 *action, u32 len)
static int intel_guc_send_ct(struct intel_guc *guc, const u32 *action, u32 len,
u32 *response_buf, u32 response_buf_size)
{
struct intel_guc_ct_channel *ctch = &guc->ct.host_channel;
u32 status = ~0; /* undefined */