Discussion:
[PATCH v6 1/2] drm/i915/skl: Rework MOCS tables to keep common part in a define
(too old to reply)
Tomasz Lis
2018-11-07 15:16:51 UTC
Permalink
The MOCS tables are going to be very similar across platforms.

To reduce the amount of copied code, this patch rips the common part and
puts it into a definition valid for all gen9 platforms.

v2: Made defines for or-ing flags. Renamed macros from MOCS_TABLE
to MOCS_ENTRIES. (Joonas)

Signed-off-by: Tomasz Lis <***@intel.com>
Suggested-by: Lucas De Marchi <***@intel.com>
Reviewed-by: Lucas De Marchi <***@intel.com> (v1)
Cc: Joonas Lahtinen <***@linux.intel.com>
Cc: Chris Wilson <***@chris-wilson.co.uk>
Cc: Daniele Ceraolo Spurio <***@intel.com>
Cc: Lucas De Marchi <***@intel.com>
---
drivers/gpu/drm/i915/intel_mocs.c | 86 ++++++++++++++++-----------------------
1 file changed, 36 insertions(+), 50 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_mocs.c b/drivers/gpu/drm/i915/intel_mocs.c
index 77e9871..8d08a7b 100644
--- a/drivers/gpu/drm/i915/intel_mocs.c
+++ b/drivers/gpu/drm/i915/intel_mocs.c
@@ -96,71 +96,57 @@ struct drm_i915_mocs_table {
* may only be updated incrementally by adding entries at the
* end.
*/
-static const struct drm_i915_mocs_entry skylake_mocs_table[] = {
- [I915_MOCS_UNCACHED] = {
- /* 0x00000009 */
- .control_value = LE_CACHEABILITY(LE_UC) |
- LE_TGT_CACHE(LE_TC_LLC_ELLC) |
- LE_LRUM(0) | LE_AOM(0) | LE_RSC(0) | LE_SCC(0) |
- LE_PFM(0) | LE_SCF(0),
-
- /* 0x0010 */
- .l3cc_value = L3_ESC(0) | L3_SCC(0) | L3_CACHEABILITY(L3_UC),
- },
- [I915_MOCS_PTE] = {
- /* 0x00000038 */
- .control_value = LE_CACHEABILITY(LE_PAGETABLE) |
- LE_TGT_CACHE(LE_TC_LLC_ELLC) |
- LE_LRUM(3) | LE_AOM(0) | LE_RSC(0) | LE_SCC(0) |
- LE_PFM(0) | LE_SCF(0),
- /* 0x0030 */
- .l3cc_value = L3_ESC(0) | L3_SCC(0) | L3_CACHEABILITY(L3_WB),
+
+#define MOCS_CONTROL_VALUE(lecc, tc, lrum, daom, ersc, scc, pfm, scf) \
+ (LE_CACHEABILITY(lecc) | LE_TGT_CACHE(tc) | \
+ LE_LRUM(lrum) | LE_AOM(daom) | LE_RSC(ersc) | LE_SCC(scc) | \
+ LE_PFM(pfm) | LE_SCF(scf))
+
+#define MOCS_L3CC_VALUE(esc, scc, l3cc) \
+ (L3_ESC(esc) | L3_SCC(scc) | L3_CACHEABILITY(l3cc))
+
+#define GEN9_MOCS_ENTRIES \
+ [I915_MOCS_UNCACHED] = { \
+ /* 0x00000009 */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_UC, LE_TC_LLC_ELLC, \
+ 0, 0, 0, 0, 0, 0), \
+ /* 0x0010 */ \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_UC), \
+ }, \
+ [I915_MOCS_PTE] = { \
+ /* 0x00000038 */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_PAGETABLE, LE_TC_LLC_ELLC, \
+ 3, 0, 0, 0, 0, 0), \
+ /* 0x0030 */ \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_WB), \
},
+
+static const struct drm_i915_mocs_entry skylake_mocs_table[] = {
+ GEN9_MOCS_ENTRIES
[I915_MOCS_CACHED] = {
/* 0x0000003b */
- .control_value = LE_CACHEABILITY(LE_WB) |
- LE_TGT_CACHE(LE_TC_LLC_ELLC) |
- LE_LRUM(3) | LE_AOM(0) | LE_RSC(0) | LE_SCC(0) |
- LE_PFM(0) | LE_SCF(0),
+ .control_value = MOCS_CONTROL_VALUE(LE_WB, LE_TC_LLC_ELLC,
+ 3, 0, 0, 0, 0, 0),
/* 0x0030 */
- .l3cc_value = L3_ESC(0) | L3_SCC(0) | L3_CACHEABILITY(L3_WB),
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_WB),
},
};

/* NOTE: the LE_TGT_CACHE is not used on Broxton */
static const struct drm_i915_mocs_entry broxton_mocs_table[] = {
- [I915_MOCS_UNCACHED] = {
- /* 0x00000009 */
- .control_value = LE_CACHEABILITY(LE_UC) |
- LE_TGT_CACHE(LE_TC_LLC_ELLC) |
- LE_LRUM(0) | LE_AOM(0) | LE_RSC(0) | LE_SCC(0) |
- LE_PFM(0) | LE_SCF(0),
-
- /* 0x0010 */
- .l3cc_value = L3_ESC(0) | L3_SCC(0) | L3_CACHEABILITY(L3_UC),
- },
- [I915_MOCS_PTE] = {
- /* 0x00000038 */
- .control_value = LE_CACHEABILITY(LE_PAGETABLE) |
- LE_TGT_CACHE(LE_TC_LLC_ELLC) |
- LE_LRUM(3) | LE_AOM(0) | LE_RSC(0) | LE_SCC(0) |
- LE_PFM(0) | LE_SCF(0),
-
- /* 0x0030 */
- .l3cc_value = L3_ESC(0) | L3_SCC(0) | L3_CACHEABILITY(L3_WB),
- },
+ GEN9_MOCS_ENTRIES
[I915_MOCS_CACHED] = {
/* 0x00000039 */
- .control_value = LE_CACHEABILITY(LE_UC) |
- LE_TGT_CACHE(LE_TC_LLC_ELLC) |
- LE_LRUM(3) | LE_AOM(0) | LE_RSC(0) | LE_SCC(0) |
- LE_PFM(0) | LE_SCF(0),
-
+ .control_value = MOCS_CONTROL_VALUE(LE_UC, LE_TC_LLC_ELLC,
+ 3, 0, 0, 0, 0, 0),
/* 0x0030 */
- .l3cc_value = L3_ESC(0) | L3_SCC(0) | L3_CACHEABILITY(L3_WB),
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_WB),
},
};

+#undef MOCS_CONTROL_VALUE
+#undef MOCS_L3CC_VALUE
+
/**
* get_mocs_settings()
* @dev_priv: i915 device.
--
2.7.4
Tomasz Lis
2018-11-07 15:16:52 UTC
Permalink
The table has been unified across OSes to minimize virtualization overhead.

The MOCS table is now published as part of bspec, and versioned. Entries
are supposed to never be modified, but new ones can be added. Adding
entries increases table version. The patch includes version 1 entries.

Meaning of each entry is now explained in bspec, and user mode clients
are expected to know what each entry means. The 3 entries used for previous
platforms are still compatible with their legacy definitions, but that is
not guaranteed to be true for future platforms.

v2: Fixed SCC values, improved commit comment (Daniele)
v3: Improved MOCS table comment (Daniele)
v4: Moved new entries below gen9 ones. Put common entries into
definition to be used in multiple arrays. (Lucas)
v5: Made defines for or-ing flags. Renamed macros from MOCS_TABLE
to MOCS_ENTRIES. Switched LE_CoS to upper case. (Joonas)
v6: Removed definitions of reserved entries. (Michal)
Increased limit of entries sent to the hardware on gen11+.

BSpec: 34007
BSpec: 560
Signed-off-by: Tomasz Lis <***@intel.com>
Reviewed-by: Daniele Ceraolo Spurio <***@intel.com> (v4)
Cc: Joonas Lahtinen <***@linux.intel.com>
Cc: Chris Wilson <***@chris-wilson.co.uk>
Cc: Mika Kuoppala <***@intel.com>
Cc: Daniele Ceraolo Spurio <***@intel.com>
Cc: Zhenyu Wang <***@linux.intel.com>
Cc: Zhi A Wang <***@intel.com>
Cc: Anuj Phogat <***@intel.com>
Cc: Adam Cetnerowski <***@intel.com>
Cc: Piotr Rozenfeld <***@intel.com>
Cc: Lucas De Marchi <***@intel.com>
---
drivers/gpu/drm/i915/intel_mocs.c | 222 +++++++++++++++++++++++++++++++++-----
1 file changed, 197 insertions(+), 25 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_mocs.c b/drivers/gpu/drm/i915/intel_mocs.c
index 8d08a7b..4eb05c6 100644
--- a/drivers/gpu/drm/i915/intel_mocs.c
+++ b/drivers/gpu/drm/i915/intel_mocs.c
@@ -44,6 +44,8 @@ struct drm_i915_mocs_table {
#define LE_SCC(value) ((value) << 8)
#define LE_PFM(value) ((value) << 11)
#define LE_SCF(value) ((value) << 14)
+#define LE_COS(value) ((value) << 15)
+#define LE_SSE(value) ((value) << 17)

/* Defines for the tables (LNCFMOCS0 - LNCFMOCS31) - two entries per word */
#define L3_ESC(value) ((value) << 0)
@@ -52,6 +54,10 @@ struct drm_i915_mocs_table {

/* Helper defines */
#define GEN9_NUM_MOCS_ENTRIES 62 /* 62 out of 64 - 63 & 64 are reserved. */
+#define GEN11_NUM_MOCS_ENTRIES 64 /* 63-64 are reserved, but configured. */
+
+#define NUM_MOCS_ENTRIES(i915) \
+ (INTEL_GEN(i915) < 11 ? GEN9_NUM_MOCS_ENTRIES : GEN11_NUM_MOCS_ENTRIES)

/* (e)LLC caching options */
#define LE_PAGETABLE 0
@@ -80,21 +86,21 @@ struct drm_i915_mocs_table {
* LNCFCMOCS0 - LNCFCMOCS32 registers.
*
* These tables are intended to be kept reasonably consistent across
- * platforms. However some of the fields are not applicable to all of
- * them.
+ * HW platforms, and for ICL+, be identical across OSes. To achieve
+ * that, for Icelake and above, list of entries is published as part
+ * of bspec.
*
* Entries not part of the following tables are undefined as far as
- * userspace is concerned and shouldn't be relied upon. For the time
- * being they will be implicitly initialized to the strictest caching
- * configuration (uncached) to guarantee forwards compatibility with
- * userspace programs written against more recent kernels providing
- * additional MOCS entries.
+ * userspace is concerned and shouldn't be relied upon.
+ *
+ * The last two entries are reserved by the hardware. For ICL+ they
+ * should be initialized according to bspec and never used, for older
+ * platforms they should never be written to.
*
- * NOTE: These tables MUST start with being uncached and the length
- * MUST be less than 63 as the last two registers are reserved
- * by the hardware. These tables are part of the kernel ABI and
- * may only be updated incrementally by adding entries at the
- * end.
+ * NOTE: These tables are part of bspec and defined as part of hardware
+ * interface for ICL+. For older platforms, they are part of kernel
+ * ABI. It is expected that existing entries will remain constant
+ * and the tables will only be updated by adding new entries.
*/

#define MOCS_CONTROL_VALUE(lecc, tc, lrum, daom, ersc, scc, pfm, scf) \
@@ -147,6 +153,167 @@ static const struct drm_i915_mocs_entry broxton_mocs_table[] = {
#undef MOCS_CONTROL_VALUE
#undef MOCS_L3CC_VALUE

+#define MOCS_CONTROL_VALUE(lecc, tc, lrum, daom, ersc, scc, pfm, scf, cos, sse) \
+ (LE_CACHEABILITY(lecc) | LE_TGT_CACHE(tc) | \
+ LE_LRUM(lrum) | LE_AOM(daom) | LE_RSC(ersc) | LE_SCC(scc) | \
+ LE_PFM(pfm) | LE_SCF(scf) | LE_COS(cos) | LE_SSE(sse))
+
+#define MOCS_L3CC_VALUE(esc, scc, l3cc) \
+ (L3_ESC(esc) | L3_SCC(scc) | L3_CACHEABILITY(l3cc))
+
+#define GEN11_MOCS_ENTRIES \
+ [0] = { \
+ /* Base - Uncached (Deprecated) */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_UC, LE_TC_LLC, \
+ 0, 0, 0, 0, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_UC), \
+ }, \
+ [1] = { \
+ /* Base - L3 + LeCC:PAT (Deprecated) */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_PAGETABLE, LE_TC_LLC, \
+ 0, 0, 0, 0, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_WB), \
+ }, \
+ [2] = { \
+ /* Base - L3 + LLC */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_WB, LE_TC_LLC, \
+ 3, 0, 0, 0, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_WB), \
+ }, \
+ [3] = { \
+ /* Base - Uncached */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_UC, LE_TC_LLC, \
+ 0, 0, 0, 0, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_UC), \
+ }, \
+ [4] = { \
+ /* Base - L3 */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_UC, LE_TC_LLC, \
+ 0, 0, 0, 0, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_WB), \
+ }, \
+ [5] = { \
+ /* Base - LLC */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_WB, LE_TC_LLC, \
+ 3, 0, 0, 0, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_UC), \
+ }, \
+ [6] = { \
+ /* Age 0 - LLC */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_WB, LE_TC_LLC, \
+ 1, 0, 0, 0, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_UC), \
+ }, \
+ [7] = { \
+ /* Age 0 - L3 + LLC */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_WB, LE_TC_LLC, \
+ 1, 0, 0, 0, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_WB), \
+ }, \
+ [8] = { \
+ /* Age: Don't Chg. - LLC */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_WB, LE_TC_LLC, \
+ 2, 0, 0, 0, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_UC), \
+ }, \
+ [9] = { \
+ /* Age: Don't Chg. - L3 + LLC */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_WB, LE_TC_LLC, \
+ 2, 0, 0, 0, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_WB), \
+ }, \
+ [10] = { \
+ /* No AOM - LLC */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_WB, LE_TC_LLC, \
+ 3, 1, 0, 0, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_UC), \
+ }, \
+ [11] = { \
+ /* No AOM - L3 + LLC */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_WB, LE_TC_LLC, \
+ 3, 1, 0, 0, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_WB), \
+ }, \
+ [12] = { \
+ /* No AOM; Age 0 - LLC */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_WB, LE_TC_LLC, \
+ 1, 1, 0, 0, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_UC), \
+ }, \
+ [13] = { \
+ /* No AOM; Age 0 - L3 + LLC */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_WB, LE_TC_LLC, \
+ 1, 1, 0, 0, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_WB), \
+ }, \
+ [14] = { \
+ /* No AOM; Age:DC - LLC */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_WB, LE_TC_LLC, \
+ 2, 1, 0, 0, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_UC), \
+ }, \
+ [15] = { \
+ /* No AOM; Age:DC - L3 + LLC */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_WB, LE_TC_LLC, \
+ 2, 1, 0, 0, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_WB), \
+ }, \
+ [18] = { \
+ /* Self-Snoop - L3 + LLC */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_WB, LE_TC_LLC, \
+ 3, 0, 0, 0, 0, 0, 0, 3), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_WB), \
+ }, \
+ [19] = { \
+ /* Skip Caching - L3 + LLC(12.5%) */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_WB, LE_TC_LLC, \
+ 3, 0, 0, 7, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_WB), \
+ }, \
+ [20] = { \
+ /* Skip Caching - L3 + LLC(25%) */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_WB, LE_TC_LLC, \
+ 3, 0, 0, 3, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_WB), \
+ }, \
+ [21] = { \
+ /* Skip Caching - L3 + LLC(50%) */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_WB, LE_TC_LLC, \
+ 3, 0, 0, 1, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_WB), \
+ }, \
+ [22] = { \
+ /* Skip Caching - L3 + LLC(75%) */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_WB, LE_TC_LLC, \
+ 3, 0, 1, 3, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_WB), \
+ }, \
+ [23] = { \
+ /* Skip Caching - L3 + LLC(87.5%) */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_WB, LE_TC_LLC, \
+ 3, 0, 1, 7, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_WB), \
+ }, \
+ [62] = { \
+ /* HW Reserved - SW program but never use */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_WB, LE_TC_LLC, \
+ 3, 0, 0, 0, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_UC), \
+ }, \
+ [63] = { \
+ /* HW Reserved - SW program but never use */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_WB, LE_TC_LLC, \
+ 3, 0, 0, 0, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_UC), \
+ },
+
+static const struct drm_i915_mocs_entry icelake_mocs_table[] = {
+ GEN11_MOCS_ENTRIES
+};
+
+#undef MOCS_CONTROL_VALUE
+#undef MOCS_L3CC_VALUE
+
/**
* get_mocs_settings()
* @dev_priv: i915 device.
@@ -164,8 +331,11 @@ static bool get_mocs_settings(struct drm_i915_private *dev_priv,
{
bool result = false;

- if (IS_GEN9_BC(dev_priv) || IS_CANNONLAKE(dev_priv) ||
- IS_ICELAKE(dev_priv)) {
+ if (IS_ICELAKE(dev_priv)) {
+ table->size = ARRAY_SIZE(icelake_mocs_table);
+ table->table = icelake_mocs_table;
+ result = true;
+ } else if (IS_GEN9_BC(dev_priv) || IS_CANNONLAKE(dev_priv)) {
table->size = ARRAY_SIZE(skylake_mocs_table);
table->table = skylake_mocs_table;
result = true;
@@ -228,7 +398,7 @@ void intel_mocs_init_engine(struct intel_engine_cs *engine)
if (!get_mocs_settings(dev_priv, &table))
return;

- GEM_BUG_ON(table.size > GEN9_NUM_MOCS_ENTRIES);
+ GEM_BUG_ON(table.size > NUM_MOCS_ENTRIES(dev_priv));

for (index = 0; index < table.size; index++)
I915_WRITE(mocs_register(engine->id, index),
@@ -242,7 +412,7 @@ void intel_mocs_init_engine(struct intel_engine_cs *engine)
* Entry 0 in the table is uncached - so we are just writing
* that value to all the used entries.
*/
- for (; index < GEN9_NUM_MOCS_ENTRIES; index++)
+ for (; index < NUM_MOCS_ENTRIES(dev_priv); index++)
I915_WRITE(mocs_register(engine->id, index),
table.table[0].control_value);
}
@@ -260,18 +430,19 @@ void intel_mocs_init_engine(struct intel_engine_cs *engine)
static int emit_mocs_control_table(struct i915_request *rq,
const struct drm_i915_mocs_table *table)
{
+ struct drm_i915_private *i915 = rq->i915;
enum intel_engine_id engine = rq->engine->id;
unsigned int index;
u32 *cs;

- if (WARN_ON(table->size > GEN9_NUM_MOCS_ENTRIES))
+ if (WARN_ON(table->size > NUM_MOCS_ENTRIES(i915)))
return -ENODEV;

- cs = intel_ring_begin(rq, 2 + 2 * GEN9_NUM_MOCS_ENTRIES);
+ cs = intel_ring_begin(rq, 2 + 2 * NUM_MOCS_ENTRIES(i915));
if (IS_ERR(cs))
return PTR_ERR(cs);

- *cs++ = MI_LOAD_REGISTER_IMM(GEN9_NUM_MOCS_ENTRIES);
+ *cs++ = MI_LOAD_REGISTER_IMM(NUM_MOCS_ENTRIES(i915));

for (index = 0; index < table->size; index++) {
*cs++ = i915_mmio_reg_offset(mocs_register(engine, index));
@@ -286,7 +457,7 @@ static int emit_mocs_control_table(struct i915_request *rq,
* Entry 0 in the table is uncached - so we are just writing
* that value to all the used entries.
*/
- for (; index < GEN9_NUM_MOCS_ENTRIES; index++) {
+ for (; index < NUM_MOCS_ENTRIES(i915); index++) {
*cs++ = i915_mmio_reg_offset(mocs_register(engine, index));
*cs++ = table->table[0].control_value;
}
@@ -319,17 +490,18 @@ static inline u32 l3cc_combine(const struct drm_i915_mocs_table *table,
static int emit_mocs_l3cc_table(struct i915_request *rq,
const struct drm_i915_mocs_table *table)
{
+ struct drm_i915_private *i915 = rq->i915;
unsigned int i;
u32 *cs;

- if (WARN_ON(table->size > GEN9_NUM_MOCS_ENTRIES))
+ if (WARN_ON(table->size > NUM_MOCS_ENTRIES(i915)))
return -ENODEV;

- cs = intel_ring_begin(rq, 2 + GEN9_NUM_MOCS_ENTRIES);
+ cs = intel_ring_begin(rq, 2 + NUM_MOCS_ENTRIES(i915));
if (IS_ERR(cs))
return PTR_ERR(cs);

- *cs++ = MI_LOAD_REGISTER_IMM(GEN9_NUM_MOCS_ENTRIES / 2);
+ *cs++ = MI_LOAD_REGISTER_IMM(NUM_MOCS_ENTRIES(i915) / 2);

for (i = 0; i < table->size/2; i++) {
*cs++ = i915_mmio_reg_offset(GEN9_LNCFCMOCS(i));
@@ -348,7 +520,7 @@ static int emit_mocs_l3cc_table(struct i915_request *rq,
* this will be uncached. Leave the last pair uninitialised as
* they are reserved by the hardware.
*/
- for (; i < GEN9_NUM_MOCS_ENTRIES / 2; i++) {
+ for (; i < NUM_MOCS_ENTRIES(i915) / 2; i++) {
*cs++ = i915_mmio_reg_offset(GEN9_LNCFCMOCS(i));
*cs++ = l3cc_combine(table, 0, 0);
}
@@ -395,7 +567,7 @@ void intel_mocs_init_l3cc_table(struct drm_i915_private *dev_priv)
* this will be uncached. Leave the last pair as initialised as
* they are reserved by the hardware.
*/
- for (; i < (GEN9_NUM_MOCS_ENTRIES / 2); i++)
+ for (; i < (NUM_MOCS_ENTRIES(dev_priv) / 2); i++)
I915_WRITE(GEN9_LNCFCMOCS(i), l3cc_combine(&table, 0, 0));
}
--
2.7.4
Tvrtko Ursulin
2018-12-10 15:17:29 UTC
Permalink
Post by Tomasz Lis
The table has been unified across OSes to minimize virtualization overhead.
The MOCS table is now published as part of bspec, and versioned. Entries
are supposed to never be modified, but new ones can be added. Adding
entries increases table version. The patch includes version 1 entries.
Meaning of each entry is now explained in bspec, and user mode clients
are expected to know what each entry means. The 3 entries used for previous
platforms are still compatible with their legacy definitions, but that is
not guaranteed to be true for future platforms.
v2: Fixed SCC values, improved commit comment (Daniele)
v3: Improved MOCS table comment (Daniele)
v4: Moved new entries below gen9 ones. Put common entries into
definition to be used in multiple arrays. (Lucas)
v5: Made defines for or-ing flags. Renamed macros from MOCS_TABLE
to MOCS_ENTRIES. Switched LE_CoS to upper case. (Joonas)
v6: Removed definitions of reserved entries. (Michal)
Increased limit of entries sent to the hardware on gen11+.
BSpec: 34007
BSpec: 560
R-b upgrade needed here as well.
Post by Tomasz Lis
---
drivers/gpu/drm/i915/intel_mocs.c | 222 +++++++++++++++++++++++++++++++++-----
1 file changed, 197 insertions(+), 25 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_mocs.c b/drivers/gpu/drm/i915/intel_mocs.c
index 8d08a7b..4eb05c6 100644
--- a/drivers/gpu/drm/i915/intel_mocs.c
+++ b/drivers/gpu/drm/i915/intel_mocs.c
@@ -44,6 +44,8 @@ struct drm_i915_mocs_table {
#define LE_SCC(value) ((value) << 8)
#define LE_PFM(value) ((value) << 11)
#define LE_SCF(value) ((value) << 14)
+#define LE_COS(value) ((value) << 15)
+#define LE_SSE(value) ((value) << 17)
/* Defines for the tables (LNCFMOCS0 - LNCFMOCS31) - two entries per word */
#define L3_ESC(value) ((value) << 0)
@@ -52,6 +54,10 @@ struct drm_i915_mocs_table {
/* Helper defines */
#define GEN9_NUM_MOCS_ENTRIES 62 /* 62 out of 64 - 63 & 64 are reserved. */
+#define GEN11_NUM_MOCS_ENTRIES 64 /* 63-64 are reserved, but configured. */
+
+#define NUM_MOCS_ENTRIES(i915) \
+ (INTEL_GEN(i915) < 11 ? GEN9_NUM_MOCS_ENTRIES : GEN11_NUM_MOCS_ENTRIES)
I have a suggestion to make this a bit more elegant by avoiding a
sprinkle of conditionals throughout the code - since I count ten
non-debug call sites of this macros.

Since the MOCS code seems nicely driven from struct drm_i915_mocs_table,
the suggestion is to store both the used and maximum valid number of
entries per platform in that structure.

It's all nicely consolidated in get_mocs_settings, where all the sanity
checks could be moved as well. Other bits of the code would then just
trust the table.
Post by Tomasz Lis
/* (e)LLC caching options */
#define LE_PAGETABLE 0
@@ -80,21 +86,21 @@ struct drm_i915_mocs_table {
* LNCFCMOCS0 - LNCFCMOCS32 registers.
*
* These tables are intended to be kept reasonably consistent across
- * platforms. However some of the fields are not applicable to all of
- * them.
+ * HW platforms, and for ICL+, be identical across OSes. To achieve
+ * that, for Icelake and above, list of entries is published as part
+ * of bspec.
*
* Entries not part of the following tables are undefined as far as
- * userspace is concerned and shouldn't be relied upon. For the time
- * being they will be implicitly initialized to the strictest caching
- * configuration (uncached) to guarantee forwards compatibility with
- * userspace programs written against more recent kernels providing
- * additional MOCS entries.
+ * userspace is concerned and shouldn't be relied upon.
+ *
+ * The last two entries are reserved by the hardware. For ICL+ they
+ * should be initialized according to bspec and never used, for older
+ * platforms they should never be written to.
*
- * NOTE: These tables MUST start with being uncached and the length
- * MUST be less than 63 as the last two registers are reserved
- * by the hardware. These tables are part of the kernel ABI and
- * may only be updated incrementally by adding entries at the
- * end.
+ * NOTE: These tables are part of bspec and defined as part of hardware
+ * interface for ICL+. For older platforms, they are part of kernel
+ * ABI. It is expected that existing entries will remain constant
+ * and the tables will only be updated by adding new entries.
*/
#define MOCS_CONTROL_VALUE(lecc, tc, lrum, daom, ersc, scc, pfm, scf) \
@@ -147,6 +153,167 @@ static const struct drm_i915_mocs_entry broxton_mocs_table[] = {
#undef MOCS_CONTROL_VALUE
#undef MOCS_L3CC_VALUE
+#define MOCS_CONTROL_VALUE(lecc, tc, lrum, daom, ersc, scc, pfm, scf, cos, sse) \
+ (LE_CACHEABILITY(lecc) | LE_TGT_CACHE(tc) | \
+ LE_LRUM(lrum) | LE_AOM(daom) | LE_RSC(ersc) | LE_SCC(scc) | \
+ LE_PFM(pfm) | LE_SCF(scf) | LE_COS(cos) | LE_SSE(sse))
+
+#define MOCS_L3CC_VALUE(esc, scc, l3cc) \
+ (L3_ESC(esc) | L3_SCC(scc) | L3_CACHEABILITY(l3cc))
+
+#define GEN11_MOCS_ENTRIES \
+ [0] = { \
+ /* Base - Uncached (Deprecated) */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_UC, LE_TC_LLC, \
+ 0, 0, 0, 0, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_UC), \
+ }, \
+ [1] = { \
+ /* Base - L3 + LeCC:PAT (Deprecated) */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_PAGETABLE, LE_TC_LLC, \
+ 0, 0, 0, 0, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_WB), \
+ }, \
+ [2] = { \
+ /* Base - L3 + LLC */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_WB, LE_TC_LLC, \
+ 3, 0, 0, 0, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_WB), \
+ }, \
+ [3] = { \
+ /* Base - Uncached */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_UC, LE_TC_LLC, \
+ 0, 0, 0, 0, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_UC), \
+ }, \
+ [4] = { \
+ /* Base - L3 */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_UC, LE_TC_LLC, \
+ 0, 0, 0, 0, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_WB), \
+ }, \
+ [5] = { \
+ /* Base - LLC */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_WB, LE_TC_LLC, \
+ 3, 0, 0, 0, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_UC), \
+ }, \
+ [6] = { \
+ /* Age 0 - LLC */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_WB, LE_TC_LLC, \
+ 1, 0, 0, 0, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_UC), \
+ }, \
+ [7] = { \
+ /* Age 0 - L3 + LLC */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_WB, LE_TC_LLC, \
+ 1, 0, 0, 0, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_WB), \
+ }, \
+ [8] = { \
+ /* Age: Don't Chg. - LLC */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_WB, LE_TC_LLC, \
+ 2, 0, 0, 0, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_UC), \
+ }, \
+ [9] = { \
+ /* Age: Don't Chg. - L3 + LLC */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_WB, LE_TC_LLC, \
+ 2, 0, 0, 0, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_WB), \
+ }, \
+ [10] = { \
+ /* No AOM - LLC */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_WB, LE_TC_LLC, \
+ 3, 1, 0, 0, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_UC), \
+ }, \
+ [11] = { \
+ /* No AOM - L3 + LLC */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_WB, LE_TC_LLC, \
+ 3, 1, 0, 0, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_WB), \
+ }, \
+ [12] = { \
+ /* No AOM; Age 0 - LLC */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_WB, LE_TC_LLC, \
+ 1, 1, 0, 0, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_UC), \
+ }, \
+ [13] = { \
+ /* No AOM; Age 0 - L3 + LLC */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_WB, LE_TC_LLC, \
+ 1, 1, 0, 0, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_WB), \
+ }, \
+ [14] = { \
+ /* No AOM; Age:DC - LLC */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_WB, LE_TC_LLC, \
+ 2, 1, 0, 0, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_UC), \
+ }, \
+ [15] = { \
+ /* No AOM; Age:DC - L3 + LLC */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_WB, LE_TC_LLC, \
+ 2, 1, 0, 0, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_WB), \
+ }, \
+ [18] = { \
+ /* Self-Snoop - L3 + LLC */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_WB, LE_TC_LLC, \
+ 3, 0, 0, 0, 0, 0, 0, 3), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_WB), \
+ }, \
+ [19] = { \
+ /* Skip Caching - L3 + LLC(12.5%) */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_WB, LE_TC_LLC, \
+ 3, 0, 0, 7, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_WB), \
+ }, \
+ [20] = { \
+ /* Skip Caching - L3 + LLC(25%) */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_WB, LE_TC_LLC, \
+ 3, 0, 0, 3, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_WB), \
+ }, \
+ [21] = { \
+ /* Skip Caching - L3 + LLC(50%) */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_WB, LE_TC_LLC, \
+ 3, 0, 0, 1, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_WB), \
+ }, \
+ [22] = { \
+ /* Skip Caching - L3 + LLC(75%) */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_WB, LE_TC_LLC, \
+ 3, 0, 1, 3, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_WB), \
+ }, \
+ [23] = { \
+ /* Skip Caching - L3 + LLC(87.5%) */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_WB, LE_TC_LLC, \
+ 3, 0, 1, 7, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_WB), \
+ }, \
+ [62] = { \
+ /* HW Reserved - SW program but never use */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_WB, LE_TC_LLC, \
+ 3, 0, 0, 0, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_UC), \
+ }, \
+ [63] = { \
+ /* HW Reserved - SW program but never use */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_WB, LE_TC_LLC, \
+ 3, 0, 0, 0, 0, 0, 0, 0), \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_UC), \
+ },
+
+static const struct drm_i915_mocs_entry icelake_mocs_table[] = {
+ GEN11_MOCS_ENTRIES
+};
+
+#undef MOCS_CONTROL_VALUE
+#undef MOCS_L3CC_VALUE
+
/**
* get_mocs_settings()
@@ -164,8 +331,11 @@ static bool get_mocs_settings(struct drm_i915_private *dev_priv,
{
bool result = false;
- if (IS_GEN9_BC(dev_priv) || IS_CANNONLAKE(dev_priv) ||
- IS_ICELAKE(dev_priv)) {
+ if (IS_ICELAKE(dev_priv)) {
+ table->size = ARRAY_SIZE(icelake_mocs_table);
+ table->table = icelake_mocs_table;
+ result = true;
+ } else if (IS_GEN9_BC(dev_priv) || IS_CANNONLAKE(dev_priv)) {
table->size = ARRAY_SIZE(skylake_mocs_table);
table->table = skylake_mocs_table;
result = true;
So initialize table max here as well.
Post by Tomasz Lis
@@ -228,7 +398,7 @@ void intel_mocs_init_engine(struct intel_engine_cs *engine)
if (!get_mocs_settings(dev_priv, &table))
return;
- GEM_BUG_ON(table.size > GEN9_NUM_MOCS_ENTRIES);
+ GEM_BUG_ON(table.size > NUM_MOCS_ENTRIES(dev_priv));
Then this can go.
Post by Tomasz Lis
for (index = 0; index < table.size; index++)
I915_WRITE(mocs_register(engine->id, index),
@@ -242,7 +412,7 @@ void intel_mocs_init_engine(struct intel_engine_cs *engine)
* Entry 0 in the table is uncached - so we are just writing
* that value to all the used entries.
*/
- for (; index < GEN9_NUM_MOCS_ENTRIES; index++)
+ for (; index < NUM_MOCS_ENTRIES(dev_priv); index++)
This can use table->max (or something).
Post by Tomasz Lis
I915_WRITE(mocs_register(engine->id, index),
table.table[0].control_value);
}
@@ -260,18 +430,19 @@ void intel_mocs_init_engine(struct intel_engine_cs *engine)
static int emit_mocs_control_table(struct i915_request *rq,
const struct drm_i915_mocs_table *table)
{
+ struct drm_i915_private *i915 = rq->i915;
enum intel_engine_id engine = rq->engine->id;
unsigned int index;
u32 *cs;
- if (WARN_ON(table->size > GEN9_NUM_MOCS_ENTRIES))
+ if (WARN_ON(table->size > NUM_MOCS_ENTRIES(i915)))
return -ENODEV;
This can then go as well. Or at least it can be GEM_WARN_ON since it
cannot leave development in the broken state.
Post by Tomasz Lis
- cs = intel_ring_begin(rq, 2 + 2 * GEN9_NUM_MOCS_ENTRIES);
+ cs = intel_ring_begin(rq, 2 + 2 * NUM_MOCS_ENTRIES(i915));
if (IS_ERR(cs))
return PTR_ERR(cs);
- *cs++ = MI_LOAD_REGISTER_IMM(GEN9_NUM_MOCS_ENTRIES);
+ *cs++ = MI_LOAD_REGISTER_IMM(NUM_MOCS_ENTRIES(i915));
These two can be table->max as well then.

Etc to the end.

See what you think.

Regards,

Tvrtko
Post by Tomasz Lis
for (index = 0; index < table->size; index++) {
*cs++ = i915_mmio_reg_offset(mocs_register(engine, index));
@@ -286,7 +457,7 @@ static int emit_mocs_control_table(struct i915_request *rq,
* Entry 0 in the table is uncached - so we are just writing
* that value to all the used entries.
*/
- for (; index < GEN9_NUM_MOCS_ENTRIES; index++) {
+ for (; index < NUM_MOCS_ENTRIES(i915); index++) {
*cs++ = i915_mmio_reg_offset(mocs_register(engine, index));
*cs++ = table->table[0].control_value;
}
@@ -319,17 +490,18 @@ static inline u32 l3cc_combine(const struct drm_i915_mocs_table *table,
static int emit_mocs_l3cc_table(struct i915_request *rq,
const struct drm_i915_mocs_table *table)
{
+ struct drm_i915_private *i915 = rq->i915;
unsigned int i;
u32 *cs;
- if (WARN_ON(table->size > GEN9_NUM_MOCS_ENTRIES))
+ if (WARN_ON(table->size > NUM_MOCS_ENTRIES(i915)))
return -ENODEV;
- cs = intel_ring_begin(rq, 2 + GEN9_NUM_MOCS_ENTRIES);
+ cs = intel_ring_begin(rq, 2 + NUM_MOCS_ENTRIES(i915));
if (IS_ERR(cs))
return PTR_ERR(cs);
- *cs++ = MI_LOAD_REGISTER_IMM(GEN9_NUM_MOCS_ENTRIES / 2);
+ *cs++ = MI_LOAD_REGISTER_IMM(NUM_MOCS_ENTRIES(i915) / 2);
for (i = 0; i < table->size/2; i++) {
*cs++ = i915_mmio_reg_offset(GEN9_LNCFCMOCS(i));
@@ -348,7 +520,7 @@ static int emit_mocs_l3cc_table(struct i915_request *rq,
* this will be uncached. Leave the last pair uninitialised as
* they are reserved by the hardware.
*/
- for (; i < GEN9_NUM_MOCS_ENTRIES / 2; i++) {
+ for (; i < NUM_MOCS_ENTRIES(i915) / 2; i++) {
*cs++ = i915_mmio_reg_offset(GEN9_LNCFCMOCS(i));
*cs++ = l3cc_combine(table, 0, 0);
}
@@ -395,7 +567,7 @@ void intel_mocs_init_l3cc_table(struct drm_i915_private *dev_priv)
* this will be uncached. Leave the last pair as initialised as
* they are reserved by the hardware.
*/
- for (; i < (GEN9_NUM_MOCS_ENTRIES / 2); i++)
+ for (; i < (NUM_MOCS_ENTRIES(dev_priv) / 2); i++)
I915_WRITE(GEN9_LNCFCMOCS(i), l3cc_combine(&table, 0, 0));
}
Patchwork
2018-11-07 16:06:31 UTC
Permalink
== Series Details ==

Series: series starting with [v6,1/2] drm/i915/skl: Rework MOCS tables to keep common part in a define
URL : https://patchwork.freedesktop.org/series/52165/
State : success

== Summary ==

= CI Bug Log - changes from CI_DRM_5097 -> Patchwork_10753 =

== Summary - SUCCESS ==

No regressions found.

External URL: https://patchwork.freedesktop.org/api/1.0/series/52165/revisions/1/mbox/

== Known issues ==

Here are the changes found in Patchwork_10753 that come from known issues:

=== IGT changes ===

==== Issues hit ====

***@gem_exec_suspend@basic-s3:
fi-cfl-8109u: PASS -> DMESG-WARN (fdo#107345)

***@kms_frontbuffer_tracking@basic:
fi-icl-u2: PASS -> FAIL (fdo#103167)

***@kms_pipe_crc_basic@read-crc-pipe-a:
fi-byt-clapper: PASS -> FAIL (fdo#107362)


==== Possible fixes ====

***@gem_exec_suspend@basic-s3:
fi-blb-e6850: INCOMPLETE (fdo#107718) -> PASS

***@kms_frontbuffer_tracking@basic:
fi-byt-clapper: FAIL (fdo#103167) -> PASS

***@kms_pipe_crc_basic@nonblocking-crc-pipe-a:
fi-byt-clapper: FAIL (fdo#107362) -> PASS

***@kms_pipe_crc_basic@read-crc-pipe-a-frame-sequence:
fi-byt-clapper: FAIL (fdo#103191, fdo#107362) -> PASS


==== Warnings ====

***@kms_pipe_crc_basic@suspend-read-crc-pipe-b:
fi-cfl-8109u: DMESG-WARN (fdo#107345) -> INCOMPLETE (fdo#108126, fdo#106070)


fdo#103167 https://bugs.freedesktop.org/show_bug.cgi?id=103167
fdo#103191 https://bugs.freedesktop.org/show_bug.cgi?id=103191
fdo#106070 https://bugs.freedesktop.org/show_bug.cgi?id=106070
fdo#107345 https://bugs.freedesktop.org/show_bug.cgi?id=107345
fdo#107362 https://bugs.freedesktop.org/show_bug.cgi?id=107362
fdo#107718 https://bugs.freedesktop.org/show_bug.cgi?id=107718
fdo#108126 https://bugs.freedesktop.org/show_bug.cgi?id=108126


== Participating hosts (52 -> 46) ==

Missing (6): fi-kbl-soraka fi-ilk-m540 fi-hsw-4200u fi-byt-squawks fi-bsw-cyan fi-ctg-p8600


== Build changes ==

* Linux: CI_DRM_5097 -> Patchwork_10753

CI_DRM_5097: c20dfc4f015dfd41246beb7d72338aa50543a5ef @ git://anongit.freedesktop.org/gfx-ci/linux
IGT_4711: cc41f4c921e56c62c85ec5349c47022ae9b5f008 @ git://anongit.freedesktop.org/xorg/app/intel-gpu-tools
Patchwork_10753: 6a470e249bc3a98312c2c3bfa0d7b8cc7baa1f38 @ git://anongit.freedesktop.org/gfx-ci/linux


== Linux commits ==

6a470e249bc3 drm/i915/icl: Define MOCS table for Icelake
06a685031088 drm/i915/skl: Rework MOCS tables to keep common part in a define

== Logs ==

For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_10753/issues.html
Patchwork
2018-11-08 01:42:29 UTC
Permalink
== Series Details ==

Series: series starting with [v6,1/2] drm/i915/skl: Rework MOCS tables to keep common part in a define
URL : https://patchwork.freedesktop.org/series/52165/
State : success

== Summary ==

= CI Bug Log - changes from CI_DRM_5097_full -> Patchwork_10753_full =

== Summary - WARNING ==

Minor unknown changes coming with Patchwork_10753_full need to be verified
manually.

If you think the reported changes have nothing to do with the changes
introduced in Patchwork_10753_full, please notify your bug team to allow them
to document this new failure mode, which will reduce false positives in CI.



== Possible new issues ==

Here are the unknown changes that may have been introduced in Patchwork_10753_full:

=== IGT changes ===

==== Warnings ====

***@pm_rc6_residency@rc6-accuracy:
shard-kbl: PASS -> SKIP


== Known issues ==

Here are the changes found in Patchwork_10753_full that come from known issues:

=== IGT changes ===

==== Issues hit ====

***@drv_suspend@shrink:
shard-hsw: PASS -> INCOMPLETE (fdo#106886, fdo#103540)
shard-glk: PASS -> INCOMPLETE (fdo#106886, fdo#103359, k.org#198133)

***@gem_cpu_reloc@full:
shard-skl: PASS -> INCOMPLETE (fdo#108073)

***@kms_busy@extended-modeset-hang-newfb-render-a:
shard-skl: NOTRUN -> DMESG-WARN (fdo#107956) +1

***@kms_busy@extended-modeset-hang-newfb-with-reset-render-c:
shard-apl: NOTRUN -> DMESG-WARN (fdo#107956)

***@kms_cursor_crc@cursor-128x128-random:
shard-skl: PASS -> FAIL (fdo#103232)

***@kms_cursor_crc@cursor-128x42-sliding:
shard-apl: NOTRUN -> FAIL (fdo#103232) +1

***@kms_cursor_crc@cursor-64x64-random:
shard-apl: PASS -> FAIL (fdo#103232)

***@kms_draw_crc@draw-method-rgb565-blt-xtiled:
shard-skl: PASS -> FAIL (fdo#103184) +1

***@kms_flip@bo-too-big:
shard-kbl: PASS -> DMESG-WARN (fdo#105602, fdo#103558) +7

***@kms_frontbuffer_tracking@fbc-1p-primscrn-cur-indfb-draw-render:
shard-apl: PASS -> FAIL (fdo#103167) +3

***@kms_frontbuffer_tracking@fbcpsr-1p-primscrn-indfb-msflip-blt:
shard-skl: PASS -> FAIL (fdo#105682)

***@kms_frontbuffer_tracking@psr-1p-primscrn-pri-shrfb-draw-blt:
shard-skl: PASS -> FAIL (fdo#103167) +1

***@kms_plane_alpha_blend@pipe-a-coverage-7efc:
shard-skl: PASS -> FAIL (fdo#108145, fdo#107815)

***@kms_plane_alpha_blend@pipe-b-alpha-transparant-fb:
shard-skl: NOTRUN -> FAIL (fdo#108145) +1

***@kms_properties@connector-properties-atomic:
shard-skl: NOTRUN -> FAIL (fdo#108642)

***@kms_setmode@basic:
shard-kbl: PASS -> FAIL (fdo#99912)

***@kms_universal_plane@universal-plane-pipe-a-functional:
shard-glk: PASS -> FAIL (fdo#103166)

***@perf@blocking:
shard-hsw: PASS -> FAIL (fdo#102252)


==== Possible fixes ====

***@gem_ctx_isolation@vecs0-s3:
shard-skl: INCOMPLETE (fdo#107773, fdo#104108) -> PASS

***@kms_busy@extended-pageflip-modeset-hang-oldfb-render-b:
shard-skl: DMESG-WARN (fdo#107956) -> PASS

***@kms_color@pipe-a-ctm-max:
shard-apl: FAIL (fdo#108147) -> PASS

***@kms_cursor_crc@cursor-256x256-random:
shard-apl: FAIL (fdo#103232) -> PASS +6

***@kms_cursor_crc@cursor-256x256-suspend:
shard-apl: FAIL (fdo#103232, fdo#103191) -> PASS

***@kms_flip@flip-vs-expired-vblank-interruptible:
shard-skl: FAIL (fdo#105363) -> PASS

***@kms_frontbuffer_tracking@fbc-1p-offscren-pri-shrfb-draw-render:
shard-skl: FAIL (fdo#105682) -> PASS

***@kms_frontbuffer_tracking@fbc-1p-primscrn-cur-indfb-onoff:
shard-apl: FAIL (fdo#103167) -> PASS

***@kms_frontbuffer_tracking@fbc-1p-primscrn-spr-indfb-draw-mmap-gtt:
shard-glk: FAIL (fdo#103167) -> PASS +1

***@kms_frontbuffer_tracking@psr-1p-primscrn-pri-indfb-draw-pwrite:
shard-skl: FAIL (fdo#103167) -> PASS +1

***@kms_pipe_crc_basic@suspend-read-crc-pipe-b:
shard-apl: INCOMPLETE (fdo#103927) -> PASS +1

***@kms_plane_alpha_blend@pipe-c-coverage-7efc:
shard-skl: FAIL (fdo#107815) -> PASS +1

***@kms_plane_multiple@atomic-pipe-a-tiling-yf:
shard-glk: FAIL (fdo#103166) -> PASS

***@kms_vblank@pipe-a-accuracy-idle:
shard-skl: FAIL (fdo#102583) -> PASS

***@pm_rpm@dpms-lpsp:
shard-skl: INCOMPLETE (fdo#107807) -> PASS


==== Warnings ====

***@gem_userptr_blits@stress-mm-invalidate-close-overlap:
shard-apl: DMESG-WARN -> INCOMPLETE (fdo#103927)


fdo#102252 https://bugs.freedesktop.org/show_bug.cgi?id=102252
fdo#102583 https://bugs.freedesktop.org/show_bug.cgi?id=102583
fdo#103166 https://bugs.freedesktop.org/show_bug.cgi?id=103166
fdo#103167 https://bugs.freedesktop.org/show_bug.cgi?id=103167
fdo#103184 https://bugs.freedesktop.org/show_bug.cgi?id=103184
fdo#103191 https://bugs.freedesktop.org/show_bug.cgi?id=103191
fdo#103232 https://bugs.freedesktop.org/show_bug.cgi?id=103232
fdo#103359 https://bugs.freedesktop.org/show_bug.cgi?id=103359
fdo#103540 https://bugs.freedesktop.org/show_bug.cgi?id=103540
fdo#103558 https://bugs.freedesktop.org/show_bug.cgi?id=103558
fdo#103927 https://bugs.freedesktop.org/show_bug.cgi?id=103927
fdo#104108 https://bugs.freedesktop.org/show_bug.cgi?id=104108
fdo#105363 https://bugs.freedesktop.org/show_bug.cgi?id=105363
fdo#105602 https://bugs.freedesktop.org/show_bug.cgi?id=105602
fdo#105682 https://bugs.freedesktop.org/show_bug.cgi?id=105682
fdo#106886 https://bugs.freedesktop.org/show_bug.cgi?id=106886
fdo#107773 https://bugs.freedesktop.org/show_bug.cgi?id=107773
fdo#107807 https://bugs.freedesktop.org/show_bug.cgi?id=107807
fdo#107815 https://bugs.freedesktop.org/show_bug.cgi?id=107815
fdo#107956 https://bugs.freedesktop.org/show_bug.cgi?id=107956
fdo#108073 https://bugs.freedesktop.org/show_bug.cgi?id=108073
fdo#108145 https://bugs.freedesktop.org/show_bug.cgi?id=108145
fdo#108147 https://bugs.freedesktop.org/show_bug.cgi?id=108147
fdo#108642 https://bugs.freedesktop.org/show_bug.cgi?id=108642
fdo#99912 https://bugs.freedesktop.org/show_bug.cgi?id=99912
k.org#198133 https://bugzilla.kernel.org/show_bug.cgi?id=198133


== Participating hosts (6 -> 6) ==

No changes in participating hosts


== Build changes ==

* Linux: CI_DRM_5097 -> Patchwork_10753

CI_DRM_5097: c20dfc4f015dfd41246beb7d72338aa50543a5ef @ git://anongit.freedesktop.org/gfx-ci/linux
IGT_4711: cc41f4c921e56c62c85ec5349c47022ae9b5f008 @ git://anongit.freedesktop.org/xorg/app/intel-gpu-tools
Patchwork_10753: 6a470e249bc3a98312c2c3bfa0d7b8cc7baa1f38 @ git://anongit.freedesktop.org/gfx-ci/linux
piglit_4509: fdc5a4ca11124ab8413c7988896eec4c97336694 @ git://anongit.freedesktop.org/piglit

== Logs ==

For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_10753/shards.html
Tvrtko Ursulin
2018-12-10 15:06:31 UTC
Permalink
Post by Tomasz Lis
The MOCS tables are going to be very similar across platforms.
To reduce the amount of copied code, this patch rips the common part and
puts it into a definition valid for all gen9 platforms.
v2: Made defines for or-ing flags. Renamed macros from MOCS_TABLE
to MOCS_ENTRIES. (Joonas)
R-b needs to be upgraded to v2 before merge.
Post by Tomasz Lis
---
drivers/gpu/drm/i915/intel_mocs.c | 86 ++++++++++++++++-----------------------
1 file changed, 36 insertions(+), 50 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_mocs.c b/drivers/gpu/drm/i915/intel_mocs.c
index 77e9871..8d08a7b 100644
--- a/drivers/gpu/drm/i915/intel_mocs.c
+++ b/drivers/gpu/drm/i915/intel_mocs.c
@@ -96,71 +96,57 @@ struct drm_i915_mocs_table {
* may only be updated incrementally by adding entries at the
* end.
*/
-static const struct drm_i915_mocs_entry skylake_mocs_table[] = {
- [I915_MOCS_UNCACHED] = {
- /* 0x00000009 */
- .control_value = LE_CACHEABILITY(LE_UC) |
- LE_TGT_CACHE(LE_TC_LLC_ELLC) |
- LE_LRUM(0) | LE_AOM(0) | LE_RSC(0) | LE_SCC(0) |
- LE_PFM(0) | LE_SCF(0),
-
- /* 0x0010 */
- .l3cc_value = L3_ESC(0) | L3_SCC(0) | L3_CACHEABILITY(L3_UC),
- },
- [I915_MOCS_PTE] = {
- /* 0x00000038 */
- .control_value = LE_CACHEABILITY(LE_PAGETABLE) |
- LE_TGT_CACHE(LE_TC_LLC_ELLC) |
- LE_LRUM(3) | LE_AOM(0) | LE_RSC(0) | LE_SCC(0) |
- LE_PFM(0) | LE_SCF(0),
- /* 0x0030 */
- .l3cc_value = L3_ESC(0) | L3_SCC(0) | L3_CACHEABILITY(L3_WB),
+
+#define MOCS_CONTROL_VALUE(lecc, tc, lrum, daom, ersc, scc, pfm, scf) \
+ (LE_CACHEABILITY(lecc) | LE_TGT_CACHE(tc) | \
+ LE_LRUM(lrum) | LE_AOM(daom) | LE_RSC(ersc) | LE_SCC(scc) | \
+ LE_PFM(pfm) | LE_SCF(scf))
+
+#define MOCS_L3CC_VALUE(esc, scc, l3cc) \
+ (L3_ESC(esc) | L3_SCC(scc) | L3_CACHEABILITY(l3cc))
These two macros do not seem more readable than the previous code, since
one has to reference the macro to remind himself what is what. But never
mind, I am only here because Tomasz copied me on a ping email. So only a
reminder to upgrade the r-b.

Regards,

Tvrtko
Post by Tomasz Lis
+
+#define GEN9_MOCS_ENTRIES \
+ [I915_MOCS_UNCACHED] = { \
+ /* 0x00000009 */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_UC, LE_TC_LLC_ELLC, \
+ 0, 0, 0, 0, 0, 0), \
+ /* 0x0010 */ \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_UC), \
+ }, \
+ [I915_MOCS_PTE] = { \
+ /* 0x00000038 */ \
+ .control_value = MOCS_CONTROL_VALUE(LE_PAGETABLE, LE_TC_LLC_ELLC, \
+ 3, 0, 0, 0, 0, 0), \
+ /* 0x0030 */ \
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_WB), \
},
+
+static const struct drm_i915_mocs_entry skylake_mocs_table[] = {
+ GEN9_MOCS_ENTRIES
[I915_MOCS_CACHED] = {
/* 0x0000003b */
- .control_value = LE_CACHEABILITY(LE_WB) |
- LE_TGT_CACHE(LE_TC_LLC_ELLC) |
- LE_LRUM(3) | LE_AOM(0) | LE_RSC(0) | LE_SCC(0) |
- LE_PFM(0) | LE_SCF(0),
+ .control_value = MOCS_CONTROL_VALUE(LE_WB, LE_TC_LLC_ELLC,
+ 3, 0, 0, 0, 0, 0),
/* 0x0030 */
- .l3cc_value = L3_ESC(0) | L3_SCC(0) | L3_CACHEABILITY(L3_WB),
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_WB),
},
};
/* NOTE: the LE_TGT_CACHE is not used on Broxton */
static const struct drm_i915_mocs_entry broxton_mocs_table[] = {
- [I915_MOCS_UNCACHED] = {
- /* 0x00000009 */
- .control_value = LE_CACHEABILITY(LE_UC) |
- LE_TGT_CACHE(LE_TC_LLC_ELLC) |
- LE_LRUM(0) | LE_AOM(0) | LE_RSC(0) | LE_SCC(0) |
- LE_PFM(0) | LE_SCF(0),
-
- /* 0x0010 */
- .l3cc_value = L3_ESC(0) | L3_SCC(0) | L3_CACHEABILITY(L3_UC),
- },
- [I915_MOCS_PTE] = {
- /* 0x00000038 */
- .control_value = LE_CACHEABILITY(LE_PAGETABLE) |
- LE_TGT_CACHE(LE_TC_LLC_ELLC) |
- LE_LRUM(3) | LE_AOM(0) | LE_RSC(0) | LE_SCC(0) |
- LE_PFM(0) | LE_SCF(0),
-
- /* 0x0030 */
- .l3cc_value = L3_ESC(0) | L3_SCC(0) | L3_CACHEABILITY(L3_WB),
- },
+ GEN9_MOCS_ENTRIES
[I915_MOCS_CACHED] = {
/* 0x00000039 */
- .control_value = LE_CACHEABILITY(LE_UC) |
- LE_TGT_CACHE(LE_TC_LLC_ELLC) |
- LE_LRUM(3) | LE_AOM(0) | LE_RSC(0) | LE_SCC(0) |
- LE_PFM(0) | LE_SCF(0),
-
+ .control_value = MOCS_CONTROL_VALUE(LE_UC, LE_TC_LLC_ELLC,
+ 3, 0, 0, 0, 0, 0),
/* 0x0030 */
- .l3cc_value = L3_ESC(0) | L3_SCC(0) | L3_CACHEABILITY(L3_WB),
+ .l3cc_value = MOCS_L3CC_VALUE(0, 0, L3_WB),
},
};
+#undef MOCS_CONTROL_VALUE
+#undef MOCS_L3CC_VALUE
+
/**
* get_mocs_settings()
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