From: Michal Wajdeczko <michal.wajdeczko@xxxxxxxxx>
Upcoming GuC firmware will always require just two CTBs and we
also plan to configure them with different sizes, so definining
them as array is no longer suitable.
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@xxxxxxxxx>
Signed-off-by: Matthew Brost <matthew.brost@xxxxxxxxx>
Reviewed-by: Matthew Brost <matthew.brost@xxxxxxxxx>
Reported-by: kernel test robot <lkp@xxxxxxxxx>
---
drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c | 46 ++++++++++++-----------
drivers/gpu/drm/i915/gt/uc/intel_guc_ct.h | 7 +++-
2 files changed, 30 insertions(+), 23 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c
index 34c582105860..882ae1ed41b0 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c
@@ -168,10 +168,10 @@ int intel_guc_ct_init(struct intel_guc_ct *ct)
struct intel_guc *guc = ct_to_guc(ct);
struct guc_ct_buffer_desc *desc;
u32 blob_size;
+ u32 cmds_size;
void *blob;
u32 *cmds;
int err;
- int i;
GEM_BUG_ON(ct->vma);
@@ -207,15 +207,23 @@ int intel_guc_ct_init(struct intel_guc_ct *ct)
CT_DEBUG(ct, "base=%#x size=%u\n", intel_guc_ggtt_offset(guc, ct->vma), blob_size);
- /* store pointers to desc and cmds */
- for (i = 0; i < ARRAY_SIZE(ct->ctbs); i++) {
- GEM_BUG_ON((i != CTB_SEND) && (i != CTB_RECV));
+ /* store pointers to desc and cmds for send ctb */
+ desc = blob;
+ cmds = blob + PAGE_SIZE / 2;
+ cmds_size = PAGE_SIZE / 4;
+ CT_DEBUG(ct, "%s desc %#p cmds %#p size %u\n", "send",
+ ptrdiff(desc, blob), ptrdiff(cmds, blob), cmds_size);
- desc = blob + PAGE_SIZE / 4 * i;
- cmds = blob + PAGE_SIZE / 4 * i + PAGE_SIZE / 2;
+ guc_ct_buffer_init(&ct->ctbs.send, desc, cmds, cmds_size);
- guc_ct_buffer_init(&ct->ctbs[i], desc, cmds, PAGE_SIZE / 4);
- }
+ /* store pointers to desc and cmds for recv ctb */
+ desc = blob + PAGE_SIZE / 4;
+ cmds = blob + PAGE_SIZE / 4 + PAGE_SIZE / 2;
+ cmds_size = PAGE_SIZE / 4;
+ CT_DEBUG(ct, "%s desc %#p cmds %#p size %u\n", "recv",
+ ptrdiff(desc, blob), ptrdiff(cmds, blob), cmds_size);
+
+ guc_ct_buffer_init(&ct->ctbs.recv, desc, cmds, cmds_size);
return 0;
}
@@ -246,7 +254,6 @@ int intel_guc_ct_enable(struct intel_guc_ct *ct)
u32 base, cmds;
void *blob;
int err;
- int i;
GEM_BUG_ON(ct->enabled);
@@ -257,28 +264,25 @@ int intel_guc_ct_enable(struct intel_guc_ct *ct)
/* blob should start with send descriptor */
blob = __px_vaddr(ct->vma->obj);
- GEM_BUG_ON(blob != ct->ctbs[CTB_SEND].desc);
+ GEM_BUG_ON(blob != ct->ctbs.send.desc);
/* (re)initialize descriptors */
- for (i = 0; i < ARRAY_SIZE(ct->ctbs); i++) {
- GEM_BUG_ON((i != CTB_SEND) && (i != CTB_RECV));
+ cmds = base + ptrdiff(ct->ctbs.send.cmds, blob);
+ guc_ct_buffer_reset(&ct->ctbs.send, cmds);
- cmds = base + ptrdiff(ct->ctbs[i].cmds, blob);
- CT_DEBUG(ct, "%d: cmds addr=%#x\n", i, cmds);
-
- guc_ct_buffer_reset(&ct->ctbs[i], cmds);
- }
+ cmds = base + ptrdiff(ct->ctbs.recv.cmds, blob);
+ guc_ct_buffer_reset(&ct->ctbs.recv, cmds);
/*
* Register both CT buffers starting with RECV buffer.
* Descriptors are in first half of the blob.
*/
- err = ct_register_buffer(ct, base + ptrdiff(ct->ctbs[CTB_RECV].desc, blob),
+ err = ct_register_buffer(ct, base + ptrdiff(ct->ctbs.recv.desc, blob),
INTEL_GUC_CT_BUFFER_TYPE_RECV);
if (unlikely(err))
goto err_out;
- err = ct_register_buffer(ct, base + ptrdiff(ct->ctbs[CTB_SEND].desc, blob),
+ err = ct_register_buffer(ct, base + ptrdiff(ct->ctbs.send.desc, blob),
INTEL_GUC_CT_BUFFER_TYPE_SEND);
if (unlikely(err))
goto err_deregister;
@@ -341,7 +345,7 @@ static int ct_write(struct intel_guc_ct *ct,
u32 len /* in dwords */,
u32 fence)
{
- struct intel_guc_ct_buffer *ctb = &ct->ctbs[CTB_SEND];
+ struct intel_guc_ct_buffer *ctb = &ct->ctbs.send;
struct guc_ct_buffer_desc *desc = ctb->desc;
u32 head = desc->head;
u32 tail = desc->tail;
@@ -557,7 +561,7 @@ static inline bool ct_header_is_response(u32 header)
static int ct_read(struct intel_guc_ct *ct, u32 *data)
{
- struct intel_guc_ct_buffer *ctb = &ct->ctbs[CTB_RECV];
+ struct intel_guc_ct_buffer *ctb = &ct->ctbs.recv;
struct guc_ct_buffer_desc *desc = ctb->desc;
u32 head = desc->head;
u32 tail = desc->tail;
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.h b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.h
index 4009e2dd0de4..fc9486779e87 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.h
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.h
@@ -47,8 +47,11 @@ struct intel_guc_ct {
struct i915_vma *vma;
bool enabled;
- /* buffers for sending(0) and receiving(1) commands */
- struct intel_guc_ct_buffer ctbs[2];
+ /* buffers for sending and receiving commands */
+ struct {
+ struct intel_guc_ct_buffer send;
+ struct intel_guc_ct_buffer recv;
+ } ctbs;
struct {
u32 last_fence; /* last fence used to send request */
--
2.28.0
