[Intel-gfx] [PATCH v4 11/23] drm/i915/adl_p: Add ddb allocation support
Matt Roper
matthew.d.roper at intel.com
Sat May 15 03:10:23 UTC 2021
From: Vandita Kulkarni <vandita.kulkarni at intel.com>
On adlp the two mbuses have two display pipes and
two DBUFS, Pipe A and D on Mbus1 and Pipe B and C on
Mbus2. The Mbus can be joined and all the DBUFS can be
used on Pipe A or B.
Bspec: 49255
Cc: Anusha Srivatsa <anusha.srivatsa at intel.com>
Signed-off-by: Vandita Kulkarni <vandita.kulkarni at intel.com>
Signed-off-by: Clinton Taylor <Clinton.A.Taylor at intel.com>
Signed-off-by: Matt Roper <matthew.d.roper at intel.com>
---
drivers/gpu/drm/i915/i915_reg.h | 22 ++++--
drivers/gpu/drm/i915/intel_pm.c | 121 +++++++++++++++++++++++++++++++-
2 files changed, 138 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 65af0d84d75b..47be6054d480 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -7308,7 +7308,7 @@ enum {
#define _PLANE_BUF_CFG_1_B 0x7127c
#define _PLANE_BUF_CFG_2_B 0x7137c
-#define DDB_ENTRY_MASK 0x7FF /* skl+: 10 bits, icl+ 11 bits */
+#define DDB_ENTRY_MASK 0xFFF /* skl+: 10 bits, icl+ 11 bits, adlp+ 12 bits */
#define DDB_ENTRY_END_SHIFT 16
#define _PLANE_BUF_CFG_1(pipe) \
_PIPE(pipe, _PLANE_BUF_CFG_1_A, _PLANE_BUF_CFG_1_B)
@@ -8145,9 +8145,23 @@ enum {
#define DISP_DATA_PARTITION_5_6 (1 << 6)
#define DISP_IPC_ENABLE (1 << 3)
-#define _DBUF_CTL_S1 0x45008
-#define _DBUF_CTL_S2 0x44FE8
-#define DBUF_CTL_S(slice) _MMIO(_PICK_EVEN(slice, _DBUF_CTL_S1, _DBUF_CTL_S2))
+/*
+ * The below are numbered starting from "S1" on gen11/gen12, but starting
+ * with gen13 display, the bspec switches to a 0-based numbering scheme
+ * (although the addresses stay the same so new S0 = old S1, new S1 = old S2).
+ * We'll just use the 0-based numbering here for all platforms since it's the
+ * way things will be named by the hardware team going forward, plus it's more
+ * consistent with how most of the rest of our registers are named.
+ */
+#define _DBUF_CTL_S0 0x45008
+#define _DBUF_CTL_S1 0x44FE8
+#define _DBUF_CTL_S2 0x44300
+#define _DBUF_CTL_S3 0x44304
+#define DBUF_CTL_S(slice) _MMIO(_PICK(slice, \
+ _DBUF_CTL_S0, \
+ _DBUF_CTL_S1, \
+ _DBUF_CTL_S2, \
+ _DBUF_CTL_S3))
#define DBUF_POWER_REQUEST REG_BIT(31)
#define DBUF_POWER_STATE REG_BIT(30)
#define DBUF_TRACKER_STATE_SERVICE_MASK REG_GENMASK(23, 19)
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 95fda20d5547..411ec468d02a 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -4558,6 +4558,118 @@ static const struct dbuf_slice_conf_entry tgl_allowed_dbufs[] =
{}
};
+static const struct dbuf_slice_conf_entry adlp_allowed_dbufs[] = {
+ {
+ .active_pipes = BIT(PIPE_A),
+ .dbuf_mask = {
+ [PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
+ },
+ },
+ {
+ .active_pipes = BIT(PIPE_B),
+ .dbuf_mask = {
+ [PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4),
+ },
+ },
+ {
+ .active_pipes = BIT(PIPE_A) | BIT(PIPE_B),
+ .dbuf_mask = {
+ [PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
+ [PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4),
+ },
+ },
+ {
+ .active_pipes = BIT(PIPE_C),
+ .dbuf_mask = {
+ [PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
+ },
+ },
+ {
+ .active_pipes = BIT(PIPE_A) | BIT(PIPE_C),
+ .dbuf_mask = {
+ [PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
+ [PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
+ },
+ },
+ {
+ .active_pipes = BIT(PIPE_B) | BIT(PIPE_C),
+ .dbuf_mask = {
+ [PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4),
+ [PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
+ },
+ },
+ {
+ .active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C),
+ .dbuf_mask = {
+ [PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
+ [PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4),
+ [PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
+ },
+ },
+ {
+ .active_pipes = BIT(PIPE_D),
+ .dbuf_mask = {
+ [PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2),
+ },
+ },
+ {
+ .active_pipes = BIT(PIPE_A) | BIT(PIPE_D),
+ .dbuf_mask = {
+ [PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
+ [PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2),
+ },
+ },
+ {
+ .active_pipes = BIT(PIPE_B) | BIT(PIPE_D),
+ .dbuf_mask = {
+ [PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4),
+ [PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2),
+ },
+ },
+ {
+ .active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_D),
+ .dbuf_mask = {
+ [PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
+ [PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4),
+ [PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2),
+ },
+ },
+ {
+ .active_pipes = BIT(PIPE_C) | BIT(PIPE_D),
+ .dbuf_mask = {
+ [PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
+ [PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2),
+ },
+ },
+ {
+ .active_pipes = BIT(PIPE_A) | BIT(PIPE_C) | BIT(PIPE_D),
+ .dbuf_mask = {
+ [PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
+ [PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
+ [PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2),
+ },
+ },
+ {
+ .active_pipes = BIT(PIPE_B) | BIT(PIPE_C) | BIT(PIPE_D),
+ .dbuf_mask = {
+ [PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4),
+ [PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
+ [PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2),
+ },
+ },
+ {
+ .active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C) | BIT(PIPE_D),
+ .dbuf_mask = {
+ [PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
+ [PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4),
+ [PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
+ [PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2),
+ },
+ },
+ {}
+
+};
+
static u8 compute_dbuf_slices(enum pipe pipe, u8 active_pipes,
const struct dbuf_slice_conf_entry *dbuf_slices)
{
@@ -4597,12 +4709,19 @@ static u8 tgl_compute_dbuf_slices(enum pipe pipe, u8 active_pipes)
return compute_dbuf_slices(pipe, active_pipes, tgl_allowed_dbufs);
}
+static u32 adlp_compute_dbuf_slices(enum pipe pipe, u32 active_pipes)
+{
+ return compute_dbuf_slices(pipe, active_pipes, adlp_allowed_dbufs);
+}
+
static u8 skl_compute_dbuf_slices(struct intel_crtc *crtc, u8 active_pipes)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum pipe pipe = crtc->pipe;
- if (DISPLAY_VER(dev_priv) == 12)
+ if (IS_ALDERLAKE_P(dev_priv))
+ return adlp_compute_dbuf_slices(pipe, active_pipes);
+ else if (DISPLAY_VER(dev_priv) == 12)
return tgl_compute_dbuf_slices(pipe, active_pipes);
else if (DISPLAY_VER(dev_priv) == 11)
return icl_compute_dbuf_slices(pipe, active_pipes);
--
2.25.4
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