Currently, the subslice_mask runtime parameter is stored as an
array of subslices per slice. Expand the subslice mask array to
better match what is presented to userspace through the
I915_QUERY_TOPOLOGY_INFO ioctl. The index into this array is
then calculated:
slice * subslice stride + subslice index / 8
v2: fix spacing in set_sseu_info args
use set_sseu_info to initialize sseu data when building
device status in debugfs
rename variables in intel_engine_types.h to avoid checkpatch
warnings
v3: update headers in intel_sseu.h
v4: add const to some sseu_dev_info variables
use sseu->eu_stride for EU stride calculations
Cc: Daniele Ceraolo Spurio <daniele.ceraolospu...@intel.com>
Signed-off-by: Stuart Summers <stuart.summ...@intel.com>
---
drivers/gpu/drm/i915/gt/intel_engine_cs.c | 6 +-
drivers/gpu/drm/i915/gt/intel_engine_types.h | 32 +++--
drivers/gpu/drm/i915/gt/intel_hangcheck.c | 3 +-
drivers/gpu/drm/i915/gt/intel_sseu.c | 49 +++++--
drivers/gpu/drm/i915/gt/intel_sseu.h | 16 ++-
drivers/gpu/drm/i915/gt/intel_workarounds.c | 2 +-
drivers/gpu/drm/i915/i915_debugfs.c | 44 +++---
drivers/gpu/drm/i915/i915_drv.c | 6 +-
drivers/gpu/drm/i915/i915_gpu_error.c | 5 +-
drivers/gpu/drm/i915/i915_query.c | 10 +-
drivers/gpu/drm/i915/intel_device_info.c | 142 +++++++++++--------
11 files changed, 198 insertions(+), 117 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c
b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
index f7308479d511..e438d366874f 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c
+++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
@@ -908,7 +908,7 @@ u32 intel_calculate_mcr_s_ss_select(struct drm_i915_private
*dev_priv)
const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
u32 mcr_s_ss_select;
u32 slice = fls(sseu->slice_mask);
- u32 subslice = fls(sseu->subslice_mask[slice]);
+ u32 subslice = fls(sseu->subslice_mask[slice * sseu->ss_stride]);
if (IS_GEN(dev_priv, 10))
mcr_s_ss_select = GEN8_MCR_SLICE(slice) |
@@ -984,6 +984,7 @@ void intel_engine_get_instdone(struct intel_engine_cs
*engine,
struct intel_instdone *instdone)
{
struct drm_i915_private *dev_priv = engine->i915;
+ const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
struct intel_uncore *uncore = engine->uncore;
u32 mmio_base = engine->mmio_base;
int slice;
@@ -1001,7 +1002,8 @@ void intel_engine_get_instdone(struct intel_engine_cs
*engine,
instdone->slice_common =
intel_uncore_read(uncore, GEN7_SC_INSTDONE);
- for_each_instdone_slice_subslice(dev_priv, slice, subslice) {
+ for_each_instdone_slice_subslice(dev_priv, sseu, slice,
+ subslice) {
instdone->sampler[slice][subslice] =
read_subslice_reg(dev_priv, slice, subslice,
GEN7_SAMPLER_INSTDONE);
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_types.h
b/drivers/gpu/drm/i915/gt/intel_engine_types.h
index d972c339309c..fa70528963a4 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_types.h
+++ b/drivers/gpu/drm/i915/gt/intel_engine_types.h
@@ -534,20 +534,22 @@ intel_engine_needs_breadcrumb_tasklet(const struct
intel_engine_cs *engine)
return engine->flags & I915_ENGINE_NEEDS_BREADCRUMB_TASKLET;
}
-#define instdone_slice_mask(dev_priv__) \
- (IS_GEN(dev_priv__, 7) ? \
- 1 : RUNTIME_INFO(dev_priv__)->sseu.slice_mask)
-
-#define instdone_subslice_mask(dev_priv__) \
- (IS_GEN(dev_priv__, 7) ? \
- 1 : RUNTIME_INFO(dev_priv__)->sseu.subslice_mask[0])
-
-#define for_each_instdone_slice_subslice(dev_priv__, slice__, subslice__) \
- for ((slice__) = 0, (subslice__) = 0; \
- (slice__) < I915_MAX_SLICES; \
- (subslice__) = ((subslice__) + 1) < I915_MAX_SUBSLICES ?
(subslice__) + 1 : 0, \
- (slice__) += ((subslice__) == 0)) \
- for_each_if((BIT(slice__) & instdone_slice_mask(dev_priv__)) &&
\
- (BIT(subslice__) &
instdone_subslice_mask(dev_priv__)))
+#define instdone_has_slice(dev_priv___, sseu___, slice___) \
+ ((IS_GEN(dev_priv___, 7) ? \
+ 1 : (sseu___)->slice_mask) & \
+ BIT(slice___)) \
+
+#define instdone_has_subslice(dev_priv__, sseu__, slice__, subslice__) \
+ ((IS_GEN(dev_priv__, 7) ? \
+ 1 : (sseu__)->subslice_mask[slice__ * (sseu__)->ss_stride + \
+ subslice__ / BITS_PER_BYTE]) & \
+ BIT(subslice__ % BITS_PER_BYTE)) \
+
+#define for_each_instdone_slice_subslice(dev_priv_, sseu_, slice_, subslice_) \
+ for ((slice_) = 0, (subslice_) = 0; (slice_) < I915_MAX_SLICES; \
+ (subslice_) = ((subslice_) + 1) < I915_MAX_SUBSLICES ? (subslice_)
+ 1 : 0, \
+ (slice_) += ((subslice_) == 0)) \
+ for_each_if(instdone_has_slice(dev_priv_, sseu_, slice) && \
+ instdone_has_subslice(dev_priv_, sseu_, slice_,
subslice_)) \
#endif /* __INTEL_ENGINE_TYPES_H__ */
diff --git a/drivers/gpu/drm/i915/gt/intel_hangcheck.c
b/drivers/gpu/drm/i915/gt/intel_hangcheck.c
index e5eaa06fe74d..53c1c98161e1 100644
--- a/drivers/gpu/drm/i915/gt/intel_hangcheck.c
+++ b/drivers/gpu/drm/i915/gt/intel_hangcheck.c
@@ -50,6 +50,7 @@ static bool instdone_unchanged(u32 current_instdone, u32
*old_instdone)
static bool subunits_stuck(struct intel_engine_cs *engine)
{
struct drm_i915_private *dev_priv = engine->i915;
+ const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
struct intel_instdone instdone;
struct intel_instdone *accu_instdone = &engine->hangcheck.instdone;
bool stuck;
@@ -71,7 +72,7 @@ static bool subunits_stuck(struct intel_engine_cs *engine)
stuck &= instdone_unchanged(instdone.slice_common,
&accu_instdone->slice_common);
- for_each_instdone_slice_subslice(dev_priv, slice, subslice) {
+ for_each_instdone_slice_subslice(dev_priv, sseu, slice, subslice) {
stuck &= instdone_unchanged(instdone.sampler[slice][subslice],
&accu_instdone->sampler[slice][subslice]);
stuck &= instdone_unchanged(instdone.row[slice][subslice],
diff --git a/drivers/gpu/drm/i915/gt/intel_sseu.c
b/drivers/gpu/drm/i915/gt/intel_sseu.c
index 4a0b82fc108c..49316b7ef074 100644
--- a/drivers/gpu/drm/i915/gt/intel_sseu.c
+++ b/drivers/gpu/drm/i915/gt/intel_sseu.c
@@ -8,6 +8,17 @@
#include "intel_lrc_reg.h"
#include "intel_sseu.h"
+void intel_sseu_set_info(struct sseu_dev_info *sseu, u8 max_slices,
+ u8 max_subslices, u8 max_eus_per_subslice)
+{
+ sseu->max_slices = max_slices;
+ sseu->max_subslices = max_subslices;
+ sseu->max_eus_per_subslice = max_eus_per_subslice;
+
+ sseu->ss_stride = GEN_SSEU_STRIDE(sseu->max_subslices);
+ sseu->eu_stride = GEN_SSEU_STRIDE(sseu->max_eus_per_subslice);
+}
+
unsigned int
intel_sseu_subslice_total(const struct sseu_dev_info *sseu)
{
@@ -22,17 +33,39 @@ intel_sseu_subslice_total(const struct sseu_dev_info *sseu)
unsigned int
intel_sseu_subslices_per_slice(const struct sseu_dev_info *sseu, u8 slice)
{
- return hweight8(sseu->subslice_mask[slice]);
+ unsigned int i, total = 0;
+
+ for (i = 0; i < sseu->ss_stride; i++)
+ total += hweight8(sseu->subslice_mask[slice * sseu->ss_stride +
+ i]);
+
+ return total;
+}
+
+void intel_sseu_copy_subslices(const struct sseu_dev_info *sseu, int slice,
+ u8 *to_mask, const u8 *from_mask)
+{
+ int offset = slice * sseu->ss_stride;
+
+ memcpy(&to_mask[offset], &from_mask[offset], sseu->ss_stride);
+}
+
+void intel_sseu_set_subslices(struct sseu_dev_info *sseu, int slice,
+ u32 ss_mask)
+{
+ int i, offset = slice * sseu->ss_stride;
+
+ for (i = 0; i < sseu->ss_stride; i++)
+ sseu->subslice_mask[offset + i] =
+ (ss_mask >> (BITS_PER_BYTE * i)) & 0xff;
}
static int intel_sseu_eu_idx(const struct sseu_dev_info *sseu, int slice,
int subslice)
{
- int subslice_stride = DIV_ROUND_UP(sseu->max_eus_per_subslice,
- BITS_PER_BYTE);
- int slice_stride = sseu->max_subslices * subslice_stride;
+ int slice_stride = sseu->max_subslices * sseu->eu_stride;
- return slice * slice_stride + subslice * subslice_stride;
+ return slice * slice_stride + subslice * sseu->eu_stride;
}
u16 intel_sseu_get_eus(const struct sseu_dev_info *sseu, int slice,
@@ -41,8 +74,7 @@ u16 intel_sseu_get_eus(const struct sseu_dev_info *sseu, int
slice,
int i, offset = intel_sseu_eu_idx(sseu, slice, subslice);
u16 eu_mask = 0;
- for (i = 0;
- i < DIV_ROUND_UP(sseu->max_eus_per_subslice, BITS_PER_BYTE); i++) {
+ for (i = 0; i < sseu->eu_stride; i++) {
eu_mask |= ((u16)sseu->eu_mask[offset + i]) <<
(i * BITS_PER_BYTE);
}
@@ -55,8 +87,7 @@ void intel_sseu_set_eus(struct sseu_dev_info *sseu, int
slice, int subslice,
{
int i, offset = intel_sseu_eu_idx(sseu, slice, subslice);
- for (i = 0;
- i < DIV_ROUND_UP(sseu->max_eus_per_subslice, BITS_PER_BYTE); i++) {
+ for (i = 0; i < sseu->eu_stride; i++) {
sseu->eu_mask[offset + i] =
(eu_mask >> (BITS_PER_BYTE * i)) & 0xff;
}
diff --git a/drivers/gpu/drm/i915/gt/intel_sseu.h
b/drivers/gpu/drm/i915/gt/intel_sseu.h
index 56e3721ae83f..bf01f338a8cc 100644
--- a/drivers/gpu/drm/i915/gt/intel_sseu.h
+++ b/drivers/gpu/drm/i915/gt/intel_sseu.h
@@ -9,16 +9,18 @@
#include <linux/types.h>
#include <linux/kernel.h>
+#include <linux/string.h>
struct drm_i915_private;
#define GEN_MAX_SLICES (6) /* CNL upper bound */
#define GEN_MAX_SUBSLICES (8) /* ICL upper bound */
#define GEN_SSEU_STRIDE(bits) DIV_ROUND_UP(bits, BITS_PER_BYTE)
+#define GEN_MAX_SUBSLICE_STRIDE GEN_SSEU_STRIDE(GEN_MAX_SUBSLICES)
struct sseu_dev_info {
u8 slice_mask;
- u8 subslice_mask[GEN_MAX_SLICES];
+ u8 subslice_mask[GEN_MAX_SLICES * GEN_MAX_SUBSLICE_STRIDE];
u16 eu_total;
u8 eu_per_subslice;
u8 min_eu_in_pool;
@@ -33,6 +35,9 @@ struct sseu_dev_info {
u8 max_subslices;
u8 max_eus_per_subslice;
+ u8 ss_stride;
+ u8 eu_stride;
+
/* We don't have more than 8 eus per subslice at the moment and as we
* store eus enabled using bits, no need to multiply by eus per
* subslice.
@@ -63,12 +68,21 @@ intel_sseu_from_device_info(const struct sseu_dev_info
*sseu)
return value;
}
+void intel_sseu_set_info(struct sseu_dev_info *sseu, u8 max_slices,
+ u8 max_subslices, u8 max_eus_per_subslice);
+
unsigned int
intel_sseu_subslice_total(const struct sseu_dev_info *sseu);
unsigned int
intel_sseu_subslices_per_slice(const struct sseu_dev_info *sseu, u8 slice);
+void intel_sseu_copy_subslices(const struct sseu_dev_info *sseu, int slice,
+ u8 *to_mask, const u8 *from_mask);
+
+void intel_sseu_set_subslices(struct sseu_dev_info *sseu, int slice,
+ u32 ss_mask);
+
u16 intel_sseu_get_eus(const struct sseu_dev_info *sseu, int slice,
int subslice);
diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c
b/drivers/gpu/drm/i915/gt/intel_workarounds.c
index 5751446a4b0b..51df88873ff5 100644
--- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
@@ -771,7 +771,7 @@ wa_init_mcr(struct drm_i915_private *i915, struct
i915_wa_list *wal)
u32 slice = fls(sseu->slice_mask);
u32 fuse3 =
intel_uncore_read(&i915->uncore, GEN10_MIRROR_FUSE3);
- u8 ss_mask = sseu->subslice_mask[slice];
+ u8 ss_mask = sseu->subslice_mask[slice * sseu->ss_stride];
u8 enabled_mask = (ss_mask | ss_mask >>
GEN10_L3BANK_PAIR_COUNT) & GEN10_L3BANK_MASK;
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c
b/drivers/gpu/drm/i915/i915_debugfs.c
index 20ac782c50c8..a45299cd6989 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1256,6 +1256,7 @@ static void i915_instdone_info(struct drm_i915_private
*dev_priv,
struct seq_file *m,
struct intel_instdone *instdone)
{
+ struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
int slice;
int subslice;
@@ -1271,11 +1272,11 @@ static void i915_instdone_info(struct drm_i915_private
*dev_priv,
if (INTEL_GEN(dev_priv) <= 6)
return;
- for_each_instdone_slice_subslice(dev_priv, slice, subslice)
+ for_each_instdone_slice_subslice(dev_priv, sseu, slice, subslice)
seq_printf(m, "\t\tSAMPLER_INSTDONE[%d][%d]: 0x%08x\n",
slice, subslice, instdone->sampler[slice][subslice]);
- for_each_instdone_slice_subslice(dev_priv, slice, subslice)
+ for_each_instdone_slice_subslice(dev_priv, sseu, slice, subslice)
seq_printf(m, "\t\tROW_INSTDONE[%d][%d]: 0x%08x\n",
slice, subslice, instdone->row[slice][subslice]);
}
@@ -4065,7 +4066,9 @@ static void gen10_sseu_device_status(struct
drm_i915_private *dev_priv,
continue;
sseu->slice_mask |= BIT(s);
- sseu->subslice_mask[s] = info->sseu.subslice_mask[s];
+ intel_sseu_copy_subslices(&info->sseu, s,
+ sseu->subslice_mask,
+ info->sseu.subslice_mask);
for (ss = 0; ss < info->sseu.max_subslices; ss++) {
unsigned int eu_cnt;
@@ -4116,18 +4119,22 @@ static void gen9_sseu_device_status(struct
drm_i915_private *dev_priv,
sseu->slice_mask |= BIT(s);
if (IS_GEN9_BC(dev_priv))
- sseu->subslice_mask[s] =
- RUNTIME_INFO(dev_priv)->sseu.subslice_mask[s];
+ intel_sseu_copy_subslices(&info->sseu, s,
+ sseu->subslice_mask,
+ info->sseu.subslice_mask);
for (ss = 0; ss < info->sseu.max_subslices; ss++) {
unsigned int eu_cnt;
+ u8 ss_idx = s * info->sseu.ss_stride +
+ ss / BITS_PER_BYTE;
if (IS_GEN9_LP(dev_priv)) {
if (!(s_reg[s] & (GEN9_PGCTL_SS_ACK(ss))))
/* skip disabled subslice */
continue;
- sseu->subslice_mask[s] |= BIT(ss);
+ sseu->subslice_mask[ss_idx] |=
+ BIT(ss % BITS_PER_BYTE);
}
eu_cnt = 2 * hweight32(eu_reg[2*s + ss/2] &
@@ -4144,25 +4151,24 @@ static void gen9_sseu_device_status(struct
drm_i915_private *dev_priv,
static void broadwell_sseu_device_status(struct drm_i915_private *dev_priv,
struct sseu_dev_info *sseu)
{
+ struct intel_runtime_info *info = RUNTIME_INFO(dev_priv);
u32 slice_info = I915_READ(GEN8_GT_SLICE_INFO);
int s;
sseu->slice_mask = slice_info & GEN8_LSLICESTAT_MASK;
if (sseu->slice_mask) {
- sseu->eu_per_subslice =
- RUNTIME_INFO(dev_priv)->sseu.eu_per_subslice;
- for (s = 0; s < fls(sseu->slice_mask); s++) {
- sseu->subslice_mask[s] =
- RUNTIME_INFO(dev_priv)->sseu.subslice_mask[s];
- }
+ sseu->eu_per_subslice = info->sseu.eu_per_subslice;
+ for (s = 0; s < fls(sseu->slice_mask); s++)
+ intel_sseu_copy_subslices(&info->sseu, s,
+ sseu->subslice_mask,
+ info->sseu.subslice_mask);
sseu->eu_total = sseu->eu_per_subslice *
intel_sseu_subslice_total(sseu);
/* subtract fused off EU(s) from enabled slice(s) */
for (s = 0; s < fls(sseu->slice_mask); s++) {
- u8 subslice_7eu =
- RUNTIME_INFO(dev_priv)->sseu.subslice_7eu[s];
+ u8 subslice_7eu = info->sseu.subslice_7eu[s];
sseu->eu_total -= hweight8(subslice_7eu);
}
@@ -4209,6 +4215,7 @@ static void i915_print_sseu_info(struct seq_file *m, bool
is_available_info,
static int i915_sseu_status(struct seq_file *m, void *unused)
{
struct drm_i915_private *dev_priv = node_to_i915(m->private);
+ const struct intel_runtime_info *info = RUNTIME_INFO(dev_priv);
struct sseu_dev_info sseu;
intel_wakeref_t wakeref;
@@ -4216,14 +4223,13 @@ static int i915_sseu_status(struct seq_file *m, void
*unused)
return -ENODEV;
seq_puts(m, "SSEU Device Info\n");
- i915_print_sseu_info(m, true, &RUNTIME_INFO(dev_priv)->sseu);
+ i915_print_sseu_info(m, true, &info->sseu);
seq_puts(m, "SSEU Device Status\n");
memset(&sseu, 0, sizeof(sseu));
- sseu.max_slices = RUNTIME_INFO(dev_priv)->sseu.max_slices;
- sseu.max_subslices = RUNTIME_INFO(dev_priv)->sseu.max_subslices;
- sseu.max_eus_per_subslice =
- RUNTIME_INFO(dev_priv)->sseu.max_eus_per_subslice;
+ intel_sseu_set_info(&sseu, info->sseu.max_slices,
+ info->sseu.max_subslices,
+ info->sseu.max_eus_per_subslice);
with_intel_runtime_pm(dev_priv, wakeref) {
if (IS_CHERRYVIEW(dev_priv))
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index c7ab0f724021..820b9216cb13 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -323,7 +323,7 @@ static int i915_getparam_ioctl(struct drm_device *dev, void
*data,
struct pci_dev *pdev = dev_priv->drm.pdev;
struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
drm_i915_getparam_t *param = data;
- int value;
+ int value = 0;
switch (param->param) {
case I915_PARAM_IRQ_ACTIVE:
@@ -452,7 +452,9 @@ static int i915_getparam_ioctl(struct drm_device *dev, void
*data,
return -ENODEV;
break;
case I915_PARAM_SUBSLICE_MASK:
- value = sseu->subslice_mask[0];
+ /* Only copy bits from the first subslice */
+ memcpy(&value, sseu->subslice_mask,
+ min(sseu->ss_stride, (u8)sizeof(value)));
if (!value)
return -ENODEV;
break;
diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c
b/drivers/gpu/drm/i915/i915_gpu_error.c
index f51ff683dd2e..9da4118ad43a 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -405,6 +405,7 @@ static void print_error_buffers(struct
drm_i915_error_state_buf *m,
static void error_print_instdone(struct drm_i915_error_state_buf *m,
const struct drm_i915_error_engine *ee)
{
+ struct sseu_dev_info *sseu = &RUNTIME_INFO(m->i915)->sseu;
int slice;
int subslice;
@@ -420,12 +421,12 @@ static void error_print_instdone(struct
drm_i915_error_state_buf *m,
if (INTEL_GEN(m->i915) <= 6)
return;
- for_each_instdone_slice_subslice(m->i915, slice, subslice)
+ for_each_instdone_slice_subslice(m->i915, sseu, slice, subslice)
err_printf(m, " SAMPLER_INSTDONE[%d][%d]: 0x%08x\n",
slice, subslice,
ee->instdone.sampler[slice][subslice]);
- for_each_instdone_slice_subslice(m->i915, slice, subslice)
+ for_each_instdone_slice_subslice(m->i915, sseu, slice, subslice)
err_printf(m, " ROW_INSTDONE[%d][%d]: 0x%08x\n",
slice, subslice,
ee->instdone.row[slice][subslice]);
diff --git a/drivers/gpu/drm/i915/i915_query.c
b/drivers/gpu/drm/i915/i915_query.c
index 7c1708c22811..000dcb145ce0 100644
--- a/drivers/gpu/drm/i915/i915_query.c
+++ b/drivers/gpu/drm/i915/i915_query.c
@@ -37,8 +37,6 @@ static int query_topology_info(struct drm_i915_private
*dev_priv,
const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
struct drm_i915_query_topology_info topo;
u32 slice_length, subslice_length, eu_length, total_length;
- u8 subslice_stride = GEN_SSEU_STRIDE(sseu->max_subslices);
- u8 eu_stride = GEN_SSEU_STRIDE(sseu->max_eus_per_subslice);
int ret;
if (query_item->flags != 0)
@@ -50,8 +48,8 @@ static int query_topology_info(struct drm_i915_private
*dev_priv,
BUILD_BUG_ON(sizeof(u8) != sizeof(sseu->slice_mask));
slice_length = sizeof(sseu->slice_mask);
- subslice_length = sseu->max_slices * subslice_stride;
- eu_length = sseu->max_slices * sseu->max_subslices * eu_stride;
+ subslice_length = sseu->max_slices * sseu->ss_stride;
+ eu_length = sseu->max_slices * sseu->max_subslices * sseu->eu_stride;
total_length = sizeof(topo) + slice_length + subslice_length +
eu_length;
@@ -69,9 +67,9 @@ static int query_topology_info(struct drm_i915_private
*dev_priv,
topo.max_eus_per_subslice = sseu->max_eus_per_subslice;
topo.subslice_offset = slice_length;
- topo.subslice_stride = subslice_stride;
+ topo.subslice_stride = sseu->ss_stride;
topo.eu_offset = slice_length + subslice_length;
- topo.eu_stride = eu_stride;
+ topo.eu_stride = sseu->eu_stride;
if (__copy_to_user(u64_to_user_ptr(query_item->data_ptr),
&topo, sizeof(topo)))
diff --git a/drivers/gpu/drm/i915/intel_device_info.c
b/drivers/gpu/drm/i915/intel_device_info.c
index e1dbccf04cd9..bbbc0a8c2183 100644
--- a/drivers/gpu/drm/i915/intel_device_info.c
+++ b/drivers/gpu/drm/i915/intel_device_info.c
@@ -84,17 +84,42 @@ void intel_device_info_dump_flags(const struct
intel_device_info *info,
#undef PRINT_FLAG
}
+#define SS_STR_MAX_SIZE (GEN_MAX_SUBSLICE_STRIDE * 2)
+
+static u8 *
+subslice_per_slice_str(u8 *buf, const struct sseu_dev_info *sseu, u8 slice)
+{
+ int i;
+ u8 ss_offset = slice * sseu->ss_stride;
+
+ GEM_BUG_ON(slice >= sseu->max_slices);
+
+ memset(buf, 0, SS_STR_MAX_SIZE);
+
+ /*
+ * Print subslice information in reverse order to match
+ * userspace expectations.
+ */
+ for (i = 0; i < sseu->ss_stride; i++)
+ sprintf(&buf[i * 2], "%02x",
+ sseu->subslice_mask[ss_offset + sseu->ss_stride -
+ (i + 1)]);
+
+ return buf;
+}
+
static void sseu_dump(const struct sseu_dev_info *sseu, struct drm_printer *p)
{
int s;
+ u8 buf[SS_STR_MAX_SIZE];
drm_printf(p, "slice total: %u, mask=%04x\n",
hweight8(sseu->slice_mask), sseu->slice_mask);
drm_printf(p, "subslice total: %u\n", intel_sseu_subslice_total(sseu));
for (s = 0; s < sseu->max_slices; s++) {
- drm_printf(p, "slice%d: %u subslices, mask=%04x\n",
+ drm_printf(p, "slice%d: %u subslices, mask=%s\n",
s, intel_sseu_subslices_per_slice(sseu, s),
- sseu->subslice_mask[s]);
+ subslice_per_slice_str(buf, sseu, s));
}
drm_printf(p, "EU total: %u\n", sseu->eu_total);
drm_printf(p, "EU per subslice: %u\n", sseu->eu_per_subslice);
@@ -118,6 +143,7 @@ void intel_device_info_dump_topology(const struct
sseu_dev_info *sseu,
struct drm_printer *p)
{
int s, ss;
+ u8 buf[SS_STR_MAX_SIZE];
if (sseu->max_slices == 0) {
drm_printf(p, "Unavailable\n");
@@ -125,9 +151,9 @@ void intel_device_info_dump_topology(const struct
sseu_dev_info *sseu,
}
for (s = 0; s < sseu->max_slices; s++) {
- drm_printf(p, "slice%d: %u subslice(s) (0x%hhx):\n",
+ drm_printf(p, "slice%d: %u subslice(s) (0x%s):\n",
s, intel_sseu_subslices_per_slice(sseu, s),
- sseu->subslice_mask[s]);
+ subslice_per_slice_str(buf, sseu, s));
for (ss = 0; ss < sseu->max_subslices; ss++) {
u16 enabled_eus = intel_sseu_get_eus(sseu, s, ss);
@@ -156,15 +182,10 @@ static void gen11_sseu_info_init(struct drm_i915_private
*dev_priv)
u8 eu_en;
int s;
- if (IS_ELKHARTLAKE(dev_priv)) {
- sseu->max_slices = 1;
- sseu->max_subslices = 4;
- sseu->max_eus_per_subslice = 8;
- } else {
- sseu->max_slices = 1;
- sseu->max_subslices = 8;
- sseu->max_eus_per_subslice = 8;
- }
+ if (IS_ELKHARTLAKE(dev_priv))
+ intel_sseu_set_info(sseu, 1, 4, 8);
+ else
+ intel_sseu_set_info(sseu, 1, 8, 8);
s_en = I915_READ(GEN11_GT_SLICE_ENABLE) & GEN11_GT_S_ENA_MASK;
ss_en = ~I915_READ(GEN11_GT_SUBSLICE_DISABLE);
@@ -177,9 +198,11 @@ static void gen11_sseu_info_init(struct drm_i915_private
*dev_priv)
int ss;
sseu->slice_mask |= BIT(s);
- sseu->subslice_mask[s] = (ss_en >> ss_idx) & ss_en_mask;
+ sseu->subslice_mask[s * sseu->ss_stride] =
+ (ss_en >> ss_idx) & ss_en_mask;
for (ss = 0; ss < sseu->max_subslices; ss++) {
- if (sseu->subslice_mask[s] & BIT(ss))
+ if (sseu->subslice_mask[s * sseu->ss_stride] &
+ BIT(ss))
intel_sseu_set_eus(sseu, s, ss, eu_en);
}
}
@@ -201,23 +224,10 @@ static void gen10_sseu_info_init(struct drm_i915_private
*dev_priv)
const int eu_mask = 0xff;
u32 subslice_mask, eu_en;
+ intel_sseu_set_info(sseu, 6, 4, 8);
+
sseu->slice_mask = (fuse2 & GEN10_F2_S_ENA_MASK) >>
GEN10_F2_S_ENA_SHIFT;
- sseu->max_slices = 6;
- sseu->max_subslices = 4;
- sseu->max_eus_per_subslice = 8;
-
- subslice_mask = (1 << 4) - 1;
- subslice_mask &= ~((fuse2 & GEN10_F2_SS_DIS_MASK) >>
- GEN10_F2_SS_DIS_SHIFT);
-
- /*
- * Slice0 can have up to 3 subslices, but there are only 2 in
- * slice1/2.
- */
- sseu->subslice_mask[0] = subslice_mask;
- for (s = 1; s < sseu->max_slices; s++)
- sseu->subslice_mask[s] = subslice_mask & 0x3;
/* Slice0 */
eu_en = ~I915_READ(GEN8_EU_DISABLE0);
@@ -242,14 +252,22 @@ static void gen10_sseu_info_init(struct drm_i915_private
*dev_priv)
eu_en = ~I915_READ(GEN10_EU_DISABLE3);
intel_sseu_set_eus(sseu, 5, 1, eu_en & eu_mask);
- /* Do a second pass where we mark the subslices disabled if all their
- * eus are off.
- */
+ subslice_mask = (1 << 4) - 1;
+ subslice_mask &= ~((fuse2 & GEN10_F2_SS_DIS_MASK) >>
+ GEN10_F2_SS_DIS_SHIFT);
+
for (s = 0; s < sseu->max_slices; s++) {
for (ss = 0; ss < sseu->max_subslices; ss++) {
if (intel_sseu_get_eus(sseu, s, ss) == 0)
- sseu->subslice_mask[s] &= ~BIT(ss);
+ subslice_mask &= ~BIT(ss);
}
+
+ /*
+ * Slice0 can have up to 3 subslices, but there are only 2 in
+ * slice1/2.
+ */
+ intel_sseu_set_subslices(sseu, s, s == 0 ? subslice_mask :
+ subslice_mask & 0x3);
}
sseu->eu_total = compute_eu_total(sseu);
@@ -275,13 +293,12 @@ static void cherryview_sseu_info_init(struct
drm_i915_private *dev_priv)
{
struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
u32 fuse;
+ u8 subslice_mask;
fuse = I915_READ(CHV_FUSE_GT);
sseu->slice_mask = BIT(0);
- sseu->max_slices = 1;
- sseu->max_subslices = 2;
- sseu->max_eus_per_subslice = 8;
+ intel_sseu_set_info(sseu, 1, 2, 8);
if (!(fuse & CHV_FGT_DISABLE_SS0)) {
u8 disabled_mask =
@@ -290,7 +307,7 @@ static void cherryview_sseu_info_init(struct
drm_i915_private *dev_priv)
(((fuse & CHV_FGT_EU_DIS_SS0_R1_MASK) >>
CHV_FGT_EU_DIS_SS0_R1_SHIFT) << 4);
- sseu->subslice_mask[0] |= BIT(0);
+ subslice_mask |= BIT(0);
intel_sseu_set_eus(sseu, 0, 0, ~disabled_mask);
}
@@ -301,10 +318,12 @@ static void cherryview_sseu_info_init(struct
drm_i915_private *dev_priv)
(((fuse & CHV_FGT_EU_DIS_SS1_R1_MASK) >>
CHV_FGT_EU_DIS_SS1_R1_SHIFT) << 4);
- sseu->subslice_mask[0] |= BIT(1);
+ subslice_mask |= BIT(1);
intel_sseu_set_eus(sseu, 0, 1, ~disabled_mask);
}
+ intel_sseu_set_subslices(sseu, 0, subslice_mask);
+
sseu->eu_total = compute_eu_total(sseu);
/*
@@ -312,7 +331,8 @@ static void cherryview_sseu_info_init(struct
drm_i915_private *dev_priv)
* across subslices.
*/
sseu->eu_per_subslice = intel_sseu_subslice_total(sseu) ?
- sseu->eu_total /
intel_sseu_subslice_total(sseu) :
+ sseu->eu_total /
+ intel_sseu_subslice_total(sseu) :
0;
/*
* CHV supports subslice power gating on devices with more than
@@ -336,9 +356,8 @@ static void gen9_sseu_info_init(struct drm_i915_private
*dev_priv)
sseu->slice_mask = (fuse2 & GEN8_F2_S_ENA_MASK) >> GEN8_F2_S_ENA_SHIFT;
/* BXT has a single slice and at most 3 subslices. */
- sseu->max_slices = IS_GEN9_LP(dev_priv) ? 1 : 3;
- sseu->max_subslices = IS_GEN9_LP(dev_priv) ? 3 : 4;
- sseu->max_eus_per_subslice = 8;
+ intel_sseu_set_info(sseu, IS_GEN9_LP(dev_priv) ? 1 : 3,
+ IS_GEN9_LP(dev_priv) ? 3 : 4, 8);
/*
* The subslice disable field is global, i.e. it applies
@@ -357,14 +376,16 @@ static void gen9_sseu_info_init(struct drm_i915_private
*dev_priv)
/* skip disabled slice */
continue;
- sseu->subslice_mask[s] = subslice_mask;
+ intel_sseu_set_subslices(sseu, s, subslice_mask);
eu_disable = I915_READ(GEN9_EU_DISABLE(s));
for (ss = 0; ss < sseu->max_subslices; ss++) {
int eu_per_ss;
u8 eu_disabled_mask;
+ u8 ss_idx = s * sseu->ss_stride + ss / BITS_PER_BYTE;
- if (!(sseu->subslice_mask[s] & BIT(ss)))
+ if (!(sseu->subslice_mask[ss_idx] &
+ BIT(ss % BITS_PER_BYTE)))
/* skip disabled subslice */
continue;
@@ -437,9 +458,7 @@ static void broadwell_sseu_info_init(struct
drm_i915_private *dev_priv)
fuse2 = I915_READ(GEN8_FUSE2);
sseu->slice_mask = (fuse2 & GEN8_F2_S_ENA_MASK) >> GEN8_F2_S_ENA_SHIFT;
- sseu->max_slices = 3;
- sseu->max_subslices = 3;
- sseu->max_eus_per_subslice = 8;
+ intel_sseu_set_info(sseu, 3, 3, 8);
/*
* The subslice disable field is global, i.e. it applies
@@ -466,18 +485,21 @@ static void broadwell_sseu_info_init(struct
drm_i915_private *dev_priv)
/* skip disabled slice */
continue;
- sseu->subslice_mask[s] = subslice_mask;
+ intel_sseu_set_subslices(sseu, s, subslice_mask);
for (ss = 0; ss < sseu->max_subslices; ss++) {
u8 eu_disabled_mask;
+ u8 ss_idx = s * sseu->ss_stride + ss / BITS_PER_BYTE;
u32 n_disabled;
- if (!(sseu->subslice_mask[s] & BIT(ss)))
+ if (!(sseu->subslice_mask[ss_idx] &
+ BIT(ss % BITS_PER_BYTE)))
/* skip disabled subslice */
continue;
eu_disabled_mask =
- eu_disable[s] >> (ss *
sseu->max_eus_per_subslice);
+ eu_disable[s] >>
+ (ss * sseu->max_eus_per_subslice);
intel_sseu_set_eus(sseu, s, ss, ~eu_disabled_mask);
@@ -517,6 +539,7 @@ static void haswell_sseu_info_init(struct drm_i915_private
*dev_priv)
struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
u32 fuse1;
int s, ss;
+ u32 subslice_mask;
/*
* There isn't a register to tell us how many slices/subslices. We
@@ -528,22 +551,18 @@ static void haswell_sseu_info_init(struct
drm_i915_private *dev_priv)
/* fall through */
case 1:
sseu->slice_mask = BIT(0);
- sseu->subslice_mask[0] = BIT(0);
+ subslice_mask = BIT(0);
break;
case 2:
sseu->slice_mask = BIT(0);
- sseu->subslice_mask[0] = BIT(0) | BIT(1);
+ subslice_mask = BIT(0) | BIT(1);
break;
case 3:
sseu->slice_mask = BIT(0) | BIT(1);
- sseu->subslice_mask[0] = BIT(0) | BIT(1);
- sseu->subslice_mask[1] = BIT(0) | BIT(1);
+ subslice_mask = BIT(0) | BIT(1);
break;
}
- sseu->max_slices = hweight8(sseu->slice_mask);
- sseu->max_subslices = hweight8(sseu->subslice_mask[0]);
-
fuse1 = I915_READ(HSW_PAVP_FUSE1);
switch ((fuse1 & HSW_F1_EU_DIS_MASK) >> HSW_F1_EU_DIS_SHIFT) {
default:
@@ -560,9 +579,14 @@ static void haswell_sseu_info_init(struct drm_i915_private
*dev_priv)
sseu->eu_per_subslice = 6;
break;
}
- sseu->max_eus_per_subslice = sseu->eu_per_subslice;
+
+ intel_sseu_set_info(sseu, hweight8(sseu->slice_mask),
+ hweight8(subslice_mask),
+ sseu->eu_per_subslice);
for (s = 0; s < sseu->max_slices; s++) {
+ intel_sseu_set_subslices(sseu, s, subslice_mask);
+
for (ss = 0; ss < sseu->max_subslices; ss++) {
intel_sseu_set_eus(sseu, s, ss,
(1UL << sseu->eu_per_subslice) - 1);
--
2.21.0.5.gaeb582a983
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