From: Michal Wajdeczko <michal.wajdec...@intel.com>
In upcoming GuC firmware, CTB size will be removed from the CTB
descriptor so we must keep it locally for any calculations.
While around, improve some debug messages and helpers.
Signed-off-by: Michal Wajdeczko <michal.wajdec...@intel.com>
Signed-off-by: Matthew Brost <matthew.br...@intel.com>
---
drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c | 55 +++++++++++++++++------
drivers/gpu/drm/i915/gt/uc/intel_guc_ct.h | 2 +
2 files changed, 43 insertions(+), 14 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 4cc8c0b71699..dbece569fbe4 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c
@@ -90,6 +90,24 @@ static void guc_ct_buffer_desc_init(struct
guc_ct_buffer_desc *desc,
desc->owner = CTB_OWNER_HOST;
}
+static void guc_ct_buffer_reset(struct intel_guc_ct_buffer *ctb, u32 cmds_addr)
+{
+ guc_ct_buffer_desc_init(ctb->desc, cmds_addr, ctb->size);
+}
+
+static void guc_ct_buffer_init(struct intel_guc_ct_buffer *ctb,
+ struct guc_ct_buffer_desc *desc,
+ u32 *cmds, u32 size)
+{
+ GEM_BUG_ON(size % 4);
+
+ ctb->desc = desc;
+ ctb->cmds = cmds;
+ ctb->size = size;
+
+ guc_ct_buffer_reset(ctb, 0);
+}
+
static int guc_action_register_ct_buffer(struct intel_guc *guc,
u32 desc_addr,
u32 type)
@@ -148,7 +166,10 @@ static int ct_deregister_buffer(struct intel_guc_ct *ct,
u32 type)
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;
void *blob;
+ u32 *cmds;
int err;
int i;
@@ -176,19 +197,24 @@ int intel_guc_ct_init(struct intel_guc_ct *ct)
* other code will need updating as well.
*/
- err = intel_guc_allocate_and_map_vma(guc, PAGE_SIZE, &ct->vma, &blob);
+ blob_size = PAGE_SIZE;
+ err = intel_guc_allocate_and_map_vma(guc, blob_size, &ct->vma, &blob);
if (unlikely(err)) {
- CT_ERROR(ct, "Failed to allocate CT channel (err=%d)\n", err);
+ CT_PROBE_ERROR(ct, "Failed to allocate %u for CTB data (%pe)\n",
+ blob_size, ERR_PTR(err));
return err;
}
- CT_DEBUG(ct, "vma base=%#x\n", intel_guc_ggtt_offset(guc, ct->vma));
+ 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));
- ct->ctbs[i].desc = blob + PAGE_SIZE/4 * i;
- ct->ctbs[i].cmds = blob + PAGE_SIZE/4 * i + PAGE_SIZE/2;
+
+ desc = blob + PAGE_SIZE / 4 * i;
+ cmds = blob + PAGE_SIZE / 4 * i + PAGE_SIZE / 2;
+
+ guc_ct_buffer_init(&ct->ctbs[i], desc, cmds, PAGE_SIZE / 4);
}
return 0;
@@ -217,7 +243,7 @@ void intel_guc_ct_fini(struct intel_guc_ct *ct)
int intel_guc_ct_enable(struct intel_guc_ct *ct)
{
struct intel_guc *guc = ct_to_guc(ct);
- u32 base, cmds, size;
+ u32 base, cmds;
int err;
int i;
@@ -232,10 +258,11 @@ int intel_guc_ct_enable(struct intel_guc_ct *ct)
*/
for (i = 0; i < ARRAY_SIZE(ct->ctbs); i++) {
GEM_BUG_ON((i != CTB_SEND) && (i != CTB_RECV));
+
cmds = base + PAGE_SIZE / 4 * i + PAGE_SIZE / 2;
- size = PAGE_SIZE / 4;
- CT_DEBUG(ct, "%d: addr=%#x size=%u\n", i, cmds, size);
- guc_ct_buffer_desc_init(ct->ctbs[i].desc, cmds, size);
+ CT_DEBUG(ct, "%d: cmds addr=%#x\n", i, cmds);
+
+ guc_ct_buffer_reset(&ct->ctbs[i], cmds);
}
/*
@@ -259,7 +286,7 @@ int intel_guc_ct_enable(struct intel_guc_ct *ct)
err_deregister:
ct_deregister_buffer(ct, INTEL_GUC_CT_BUFFER_TYPE_RECV);
err_out:
- CT_PROBE_ERROR(ct, "Failed to open channel (err=%d)\n", err);
+ CT_PROBE_ERROR(ct, "Failed to enable CTB (%pe)\n", ERR_PTR(err));
return err;
}
@@ -314,7 +341,7 @@ static int ct_write(struct intel_guc_ct *ct,
struct guc_ct_buffer_desc *desc = ctb->desc;
u32 head = desc->head;
u32 tail = desc->tail;
- u32 size = desc->size;
+ u32 size = ctb->size;
u32 used;
u32 header;
u32 *cmds = ctb->cmds;
@@ -323,7 +350,7 @@ static int ct_write(struct intel_guc_ct *ct,
if (unlikely(desc->is_in_error))
return -EPIPE;
- if (unlikely(!IS_ALIGNED(head | tail | size, 4) ||
+ if (unlikely(!IS_ALIGNED(head | tail, 4) ||
(tail | head) >= size))
goto corrupted;
@@ -530,7 +557,7 @@ static int ct_read(struct intel_guc_ct *ct, u32 *data)
struct guc_ct_buffer_desc *desc = ctb->desc;
u32 head = desc->head;
u32 tail = desc->tail;
- u32 size = desc->size;
+ u32 size = ctb->size;
u32 *cmds = ctb->cmds;
s32 available;
unsigned int len;
@@ -539,7 +566,7 @@ static int ct_read(struct intel_guc_ct *ct, u32 *data)
if (unlikely(desc->is_in_error))
return -EPIPE;
- if (unlikely(!IS_ALIGNED(head | tail | size, 4) ||
+ if (unlikely(!IS_ALIGNED(head | tail, 4) ||
(tail | head) >= size))
goto corrupted;
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 494a51a5200f..4009e2dd0de4 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.h
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.h
@@ -29,10 +29,12 @@ struct intel_guc;
*
* @desc: pointer to the buffer descriptor
* @cmds: pointer to the commands buffer
+ * @size: size of the commands buffer
*/
struct intel_guc_ct_buffer {
struct guc_ct_buffer_desc *desc;
u32 *cmds;
+ u32 size;
};
--
2.28.0
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