Re: [PATCH 2/2] drm/i915/adl_s: Add ADL-S platform info and PCI ids

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On Mon, Jan 11, 2021 at 11:30:00AM -0800, Aditya Swarup wrote:
From: Caz Yokoyama <caz.yokoyama@xxxxxxxxx>

- Add the initial platform information for Alderlake-S.
- Specify ppgtt_size value
- Add dma_mask_size
- Add ADLS REVIDs
- HW tracking(Selective Update Tracking Enable) has been
 removed from ADLS. Disable PSR2 till we enable software/
 manual tracking.

v2:
- Add support for different ADLS SOC steppings to select
 correct GT/DISP stepping based on Bspec 53655 based on
 feedback from Matt Roper.(aswarup)

v3:
- Make display/gt steppings info generic for reuse with TGL and ADLS.
- Modify the macros to reuse tgl_revids_get()
- Add HTI support to adls device info.(mdroper)

v4:
- Rebase on TGL patch for applying WAs based on stepping info from
 Matt Roper's feedback.(aswarup)

v5:
- Replace macros with PCI IDs in revid to stepping table.

Bspec: 53597
Bspec: 53648
Bspec: 53655
Bspec: 48028
Bspec: 53650
BSpec: 50422

Cc: José Roberto de Souza <jose.souza@xxxxxxxxx>
Cc: Matt Roper <matthew.d.roper@xxxxxxxxx>
Cc: Lucas De Marchi <lucas.demarchi@xxxxxxxxx>
Cc: Anusha Srivatsa <anusha.srivatsa@xxxxxxxxx>
Cc: Jani Nikula <jani.nikula@xxxxxxxxx>
Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Cc: Imre Deak <imre.deak@xxxxxxxxx>
Signed-off-by: Caz Yokoyama <caz.yokoyama@xxxxxxxxx>
Signed-off-by: Aditya Swarup <aditya.swarup@xxxxxxxxx>
---
drivers/gpu/drm/i915/gt/intel_workarounds.c |  8 ++++++
drivers/gpu/drm/i915/i915_drv.h             | 27 ++++++++++++++++++++-
drivers/gpu/drm/i915/i915_pci.c             | 13 ++++++++++
drivers/gpu/drm/i915/intel_device_info.c    |  1 +
drivers/gpu/drm/i915/intel_device_info.h    |  1 +
include/drm/i915_pciids.h                   | 11 +++++++++
6 files changed, 60 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c
index 111d01e2f81e..cb9220925fe7 100644
--- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
@@ -84,6 +84,14 @@ const struct i915_rev_steppings tgl_revid_step_tbl[] = {
	[1] = { .gt_stepping = STEP_B0, .disp_stepping = STEP_D0 },
};

+const struct i915_rev_steppings adls_revid_step_tbl[] = {
+	[0x0] = { .gt_stepping = STEP_A0, .disp_stepping = STEP_A0 },
+	[0x1] = { .gt_stepping = STEP_A0, .disp_stepping = STEP_A2 },
+	[0x4] = { .gt_stepping = STEP_B0, .disp_stepping = STEP_B0 },
+	[0x8] = { .gt_stepping = STEP_C0, .disp_stepping = STEP_B0 },
+	[0xC] = { .gt_stepping = STEP_D0, .disp_stepping = STEP_C0 },
+};
+
static void wa_init_start(struct i915_wa_list *wal, const char *name, const char *engine_name)
{
	wal->name = name;
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 11d6e8abde46..8d8a046a7b0c 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1417,6 +1417,7 @@ IS_SUBPLATFORM(const struct drm_i915_private *i915,
#define IS_TIGERLAKE(dev_priv)	IS_PLATFORM(dev_priv, INTEL_TIGERLAKE)
#define IS_ROCKETLAKE(dev_priv)	IS_PLATFORM(dev_priv, INTEL_ROCKETLAKE)
#define IS_DG1(dev_priv)        IS_PLATFORM(dev_priv, INTEL_DG1)
+#define IS_ALDERLAKE_S(dev_priv) IS_PLATFORM(dev_priv, INTEL_ALDERLAKE_S)
#define IS_HSW_EARLY_SDV(dev_priv) (IS_HASWELL(dev_priv) && \
				    (INTEL_DEVID(dev_priv) & 0xFF00) == 0x0C00)
#define IS_BDW_ULT(dev_priv) \
@@ -1560,6 +1561,7 @@ extern const struct i915_rev_steppings kbl_revids[];

enum {
	STEP_A0,
+	STEP_A2,
	STEP_B0,
	STEP_B1,
	STEP_C0,
@@ -1568,9 +1570,11 @@ enum {

#define TGL_UY_REVID_STEP_TBL_SIZE	4
#define TGL_REVID_STEP_TBL_SIZE		2
+#define ADLS_REVID_STEP_TBL_SIZE	13

extern const struct i915_rev_steppings tgl_uy_revid_step_tbl[TGL_UY_REVID_STEP_TBL_SIZE];
extern const struct i915_rev_steppings tgl_revid_step_tbl[TGL_REVID_STEP_TBL_SIZE];
+extern const struct i915_rev_steppings adls_revid_step_tbl[ADLS_REVID_STEP_TBL_SIZE];

static inline const struct i915_rev_steppings *
tgl_stepping_get(struct drm_i915_private *dev_priv)
@@ -1579,7 +1583,10 @@ tgl_stepping_get(struct drm_i915_private *dev_priv)
	u8 size;
	const struct i915_rev_steppings *revid_step_tbl;

-	if (IS_TGL_U(dev_priv) || IS_TGL_Y(dev_priv)) {
+	if (IS_ALDERLAKE_S(dev_priv)) {
+		revid_step_tbl = adls_revid_step_tbl;
+		size = ARRAY_SIZE(adls_revid_step_tbl);
+	} else if (IS_TGL_U(dev_priv) || IS_TGL_Y(dev_priv)) {
		revid_step_tbl = tgl_uy_revid_step_tbl;
		size = ARRAY_SIZE(tgl_uy_revid_step_tbl);
	} else {
@@ -1621,6 +1628,24 @@ tgl_stepping_get(struct drm_i915_private *dev_priv)
#define IS_DG1_REVID(p, since, until) \
	(IS_DG1(p) && IS_REVID(p, since, until))

+#define ADLS_REVID_A0		0x0
+#define ADLS_REVID_A2		0x1
+#define ADLS_REVID_B0		0x4
+#define ADLS_REVID_G0		0x8
+#define ADLS_REVID_C0		0xC /*Same as H0 ADLS SOC stepping*/
+
+extern const struct i915_rev_steppings adls_revids[];

this can be removed now, otherwise lgtm

Reviewed-by: Lucas De Marchi <lucas.demarchi@xxxxxxxxx>

Lucas De Marchi
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