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linux-zen-desktop/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c

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Initial commit
2023-08-30 17:31:07 +02:00
// SPDX-License-Identifier: MIT
/*
* Copyright © 2014-2019 Intel Corporation
*/
#include <linux/bsearch.h>
#include "gem/i915_gem_lmem.h"
#include "gt/intel_engine_regs.h"
#include "gt/intel_gt.h"
#include "gt/intel_gt_mcr.h"
#include "gt/intel_gt_regs.h"
#include "gt/intel_lrc.h"
#include "gt/shmem_utils.h"
#include "intel_guc_ads.h"
#include "intel_guc_capture.h"
#include "intel_guc_fwif.h"
#include "intel_guc_print.h"
#include "intel_uc.h"
#include "i915_drv.h"
/*
* The Additional Data Struct (ADS) has pointers for different buffers used by
* the GuC. One single gem object contains the ADS struct itself (guc_ads) and
* all the extra buffers indirectly linked via the ADS struct's entries.
*
* Layout of the ADS blob allocated for the GuC:
*
* +---------------------------------------+ <== base
* | guc_ads |
* +---------------------------------------+
* | guc_policies |
* +---------------------------------------+
* | guc_gt_system_info |
* +---------------------------------------+
* | guc_engine_usage |
* +---------------------------------------+ <== static
* | guc_mmio_reg[countA] (engine 0.0) |
* | guc_mmio_reg[countB] (engine 0.1) |
* | guc_mmio_reg[countC] (engine 1.0) |
* | ... |
* +---------------------------------------+ <== dynamic
* | padding |
* +---------------------------------------+ <== 4K aligned
* | golden contexts |
* +---------------------------------------+
* | padding |
* +---------------------------------------+ <== 4K aligned
* | capture lists |
* +---------------------------------------+
* | padding |
* +---------------------------------------+ <== 4K aligned
* | private data |
* +---------------------------------------+
* | padding |
* +---------------------------------------+ <== 4K aligned
*/
struct __guc_ads_blob {
struct guc_ads ads;
struct guc_policies policies;
struct guc_gt_system_info system_info;
struct guc_engine_usage engine_usage;
/* From here on, location is dynamic! Refer to above diagram. */
struct guc_mmio_reg regset[];
} __packed;
#define ads_blob_read(guc_, field_) \
iosys_map_rd_field(&(guc_)->ads_map, 0, struct __guc_ads_blob, field_)
#define ads_blob_write(guc_, field_, val_) \
iosys_map_wr_field(&(guc_)->ads_map, 0, struct __guc_ads_blob, \
field_, val_)
#define info_map_write(map_, field_, val_) \
iosys_map_wr_field(map_, 0, struct guc_gt_system_info, field_, val_)
#define info_map_read(map_, field_) \
iosys_map_rd_field(map_, 0, struct guc_gt_system_info, field_)
static u32 guc_ads_regset_size(struct intel_guc *guc)
{
GEM_BUG_ON(!guc->ads_regset_size);
return guc->ads_regset_size;
}
static u32 guc_ads_golden_ctxt_size(struct intel_guc *guc)
{
return PAGE_ALIGN(guc->ads_golden_ctxt_size);
}
static u32 guc_ads_capture_size(struct intel_guc *guc)
{
return PAGE_ALIGN(guc->ads_capture_size);
}
static u32 guc_ads_private_data_size(struct intel_guc *guc)
{
return PAGE_ALIGN(guc->fw.private_data_size);
}
static u32 guc_ads_regset_offset(struct intel_guc *guc)
{
return offsetof(struct __guc_ads_blob, regset);
}
static u32 guc_ads_golden_ctxt_offset(struct intel_guc *guc)
{
u32 offset;
offset = guc_ads_regset_offset(guc) +
guc_ads_regset_size(guc);
return PAGE_ALIGN(offset);
}
static u32 guc_ads_capture_offset(struct intel_guc *guc)
{
u32 offset;
offset = guc_ads_golden_ctxt_offset(guc) +
guc_ads_golden_ctxt_size(guc);
return PAGE_ALIGN(offset);
}
static u32 guc_ads_private_data_offset(struct intel_guc *guc)
{
u32 offset;
offset = guc_ads_capture_offset(guc) +
guc_ads_capture_size(guc);
return PAGE_ALIGN(offset);
}
static u32 guc_ads_blob_size(struct intel_guc *guc)
{
return guc_ads_private_data_offset(guc) +
guc_ads_private_data_size(guc);
}
static void guc_policies_init(struct intel_guc *guc)
{
struct intel_gt *gt = guc_to_gt(guc);
struct drm_i915_private *i915 = gt->i915;
u32 global_flags = 0;
ads_blob_write(guc, policies.dpc_promote_time,
GLOBAL_POLICY_DEFAULT_DPC_PROMOTE_TIME_US);
ads_blob_write(guc, policies.max_num_work_items,
GLOBAL_POLICY_MAX_NUM_WI);
if (i915->params.reset < 2)
global_flags |= GLOBAL_POLICY_DISABLE_ENGINE_RESET;
ads_blob_write(guc, policies.global_flags, global_flags);
ads_blob_write(guc, policies.is_valid, 1);
}
void intel_guc_ads_print_policy_info(struct intel_guc *guc,
struct drm_printer *dp)
{
if (unlikely(iosys_map_is_null(&guc->ads_map)))
return;
drm_printf(dp, "Global scheduling policies:\n");
drm_printf(dp, " DPC promote time = %u\n",
ads_blob_read(guc, policies.dpc_promote_time));
drm_printf(dp, " Max num work items = %u\n",
ads_blob_read(guc, policies.max_num_work_items));
drm_printf(dp, " Flags = %u\n",
ads_blob_read(guc, policies.global_flags));
}
static int guc_action_policies_update(struct intel_guc *guc, u32 policy_offset)
{
u32 action[] = {
INTEL_GUC_ACTION_GLOBAL_SCHED_POLICY_CHANGE,
policy_offset
};
return intel_guc_send_busy_loop(guc, action, ARRAY_SIZE(action), 0, true);
}
int intel_guc_global_policies_update(struct intel_guc *guc)
{
struct intel_gt *gt = guc_to_gt(guc);
u32 scheduler_policies;
intel_wakeref_t wakeref;
int ret;
if (iosys_map_is_null(&guc->ads_map))
return -EOPNOTSUPP;
scheduler_policies = ads_blob_read(guc, ads.scheduler_policies);
GEM_BUG_ON(!scheduler_policies);
guc_policies_init(guc);
if (!intel_guc_is_ready(guc))
return 0;
with_intel_runtime_pm(&gt->i915->runtime_pm, wakeref)
ret = guc_action_policies_update(guc, scheduler_policies);
return ret;
}
static void guc_mapping_table_init(struct intel_gt *gt,
struct iosys_map *info_map)
{
unsigned int i, j;
struct intel_engine_cs *engine;
enum intel_engine_id id;
/* Table must be set to invalid values for entries not used */
for (i = 0; i < GUC_MAX_ENGINE_CLASSES; ++i)
for (j = 0; j < GUC_MAX_INSTANCES_PER_CLASS; ++j)
info_map_write(info_map, mapping_table[i][j],
GUC_MAX_INSTANCES_PER_CLASS);
for_each_engine(engine, gt, id) {
u8 guc_class = engine_class_to_guc_class(engine->class);
info_map_write(info_map, mapping_table[guc_class][ilog2(engine->logical_mask)],
engine->instance);
}
}
/*
* The save/restore register list must be pre-calculated to a temporary
* buffer before it can be copied inside the ADS.
*/
struct temp_regset {
/*
* ptr to the section of the storage for the engine currently being
* worked on
*/
struct guc_mmio_reg *registers;
/* ptr to the base of the allocated storage for all engines */
struct guc_mmio_reg *storage;
u32 storage_used;
u32 storage_max;
};
static int guc_mmio_reg_cmp(const void *a, const void *b)
{
const struct guc_mmio_reg *ra = a;
const struct guc_mmio_reg *rb = b;
return (int)ra->offset - (int)rb->offset;
}
static struct guc_mmio_reg * __must_check
__mmio_reg_add(struct temp_regset *regset, struct guc_mmio_reg *reg)
{
u32 pos = regset->storage_used;
struct guc_mmio_reg *slot;
if (pos >= regset->storage_max) {
size_t size = ALIGN((pos + 1) * sizeof(*slot), PAGE_SIZE);
struct guc_mmio_reg *r = krealloc(regset->storage,
size, GFP_KERNEL);
if (!r) {
WARN_ONCE(1, "Incomplete regset list: can't add register (%d)\n",
-ENOMEM);
return ERR_PTR(-ENOMEM);
}
regset->registers = r + (regset->registers - regset->storage);
regset->storage = r;
regset->storage_max = size / sizeof(*slot);
}
slot = &regset->storage[pos];
regset->storage_used++;
*slot = *reg;
return slot;
}
static long __must_check guc_mmio_reg_add(struct intel_gt *gt,
struct temp_regset *regset,
u32 offset, u32 flags)
{
u32 count = regset->storage_used - (regset->registers - regset->storage);
struct guc_mmio_reg entry = {
.offset = offset,
.flags = flags,
};
struct guc_mmio_reg *slot;
/*
* The mmio list is built using separate lists within the driver.
* It's possible that at some point we may attempt to add the same
* register more than once. Do not consider this an error; silently
* move on if the register is already in the list.
*/
if (bsearch(&entry, regset->registers, count,
sizeof(entry), guc_mmio_reg_cmp))
return 0;
slot = __mmio_reg_add(regset, &entry);
if (IS_ERR(slot))
return PTR_ERR(slot);
while (slot-- > regset->registers) {
GEM_BUG_ON(slot[0].offset == slot[1].offset);
if (slot[1].offset > slot[0].offset)
break;
swap(slot[1], slot[0]);
}
return 0;
}
#define GUC_MMIO_REG_ADD(gt, regset, reg, masked) \
guc_mmio_reg_add(gt, \
regset, \
i915_mmio_reg_offset(reg), \
(masked) ? GUC_REGSET_MASKED : 0)
#define GUC_REGSET_STEERING(group, instance) ( \
FIELD_PREP(GUC_REGSET_STEERING_GROUP, (group)) | \
FIELD_PREP(GUC_REGSET_STEERING_INSTANCE, (instance)) | \
GUC_REGSET_NEEDS_STEERING \
)
static long __must_check guc_mcr_reg_add(struct intel_gt *gt,
struct temp_regset *regset,
i915_mcr_reg_t reg, u32 flags)
{
u8 group, inst;
/*
* The GuC doesn't have a default steering, so we need to explicitly
* steer all registers that need steering. However, we do not keep track
* of all the steering ranges, only of those that have a chance of using
* a non-default steering from the i915 pov. Instead of adding such
* tracking, it is easier to just program the default steering for all
* regs that don't need a non-default one.
*/
intel_gt_mcr_get_nonterminated_steering(gt, reg, &group, &inst);
flags |= GUC_REGSET_STEERING(group, inst);
return guc_mmio_reg_add(gt, regset, i915_mmio_reg_offset(reg), flags);
}
#define GUC_MCR_REG_ADD(gt, regset, reg, masked) \
guc_mcr_reg_add(gt, \
regset, \
(reg), \
(masked) ? GUC_REGSET_MASKED : 0)
static int guc_mmio_regset_init(struct temp_regset *regset,
struct intel_engine_cs *engine)
{
struct intel_gt *gt = engine->gt;
const u32 base = engine->mmio_base;
struct i915_wa_list *wal = &engine->wa_list;
struct i915_wa *wa;
unsigned int i;
int ret = 0;
/*
* Each engine's registers point to a new start relative to
* storage
*/
regset->registers = regset->storage + regset->storage_used;
ret |= GUC_MMIO_REG_ADD(gt, regset, RING_MODE_GEN7(base), true);
ret |= GUC_MMIO_REG_ADD(gt, regset, RING_HWS_PGA(base), false);
ret |= GUC_MMIO_REG_ADD(gt, regset, RING_IMR(base), false);
if ((engine->flags & I915_ENGINE_FIRST_RENDER_COMPUTE) &&
CCS_MASK(engine->gt))
ret |= GUC_MMIO_REG_ADD(gt, regset, GEN12_RCU_MODE, true);
for (i = 0, wa = wal->list; i < wal->count; i++, wa++)
ret |= GUC_MMIO_REG_ADD(gt, regset, wa->reg, wa->masked_reg);
/* Be extra paranoid and include all whitelist registers. */
for (i = 0; i < RING_MAX_NONPRIV_SLOTS; i++)
ret |= GUC_MMIO_REG_ADD(gt, regset,
RING_FORCE_TO_NONPRIV(base, i),
false);
/* add in local MOCS registers */
for (i = 0; i < LNCFCMOCS_REG_COUNT; i++)
if (GRAPHICS_VER_FULL(engine->i915) >= IP_VER(12, 50))
ret |= GUC_MCR_REG_ADD(gt, regset, XEHP_LNCFCMOCS(i), false);
else
ret |= GUC_MMIO_REG_ADD(gt, regset, GEN9_LNCFCMOCS(i), false);
if (GRAPHICS_VER(engine->i915) >= 12) {
ret |= GUC_MMIO_REG_ADD(gt, regset, EU_PERF_CNTL0, false);
ret |= GUC_MMIO_REG_ADD(gt, regset, EU_PERF_CNTL1, false);
ret |= GUC_MMIO_REG_ADD(gt, regset, EU_PERF_CNTL2, false);
ret |= GUC_MMIO_REG_ADD(gt, regset, EU_PERF_CNTL3, false);
ret |= GUC_MMIO_REG_ADD(gt, regset, EU_PERF_CNTL4, false);
ret |= GUC_MMIO_REG_ADD(gt, regset, EU_PERF_CNTL5, false);
ret |= GUC_MMIO_REG_ADD(gt, regset, EU_PERF_CNTL6, false);
}
return ret ? -1 : 0;
}
static long guc_mmio_reg_state_create(struct intel_guc *guc)
{
struct intel_gt *gt = guc_to_gt(guc);
struct intel_engine_cs *engine;
enum intel_engine_id id;
struct temp_regset temp_set = {};
long total = 0;
long ret;
for_each_engine(engine, gt, id) {
u32 used = temp_set.storage_used;
ret = guc_mmio_regset_init(&temp_set, engine);
if (ret < 0)
goto fail_regset_init;
guc->ads_regset_count[id] = temp_set.storage_used - used;
total += guc->ads_regset_count[id];
}
guc->ads_regset = temp_set.storage;
guc_dbg(guc, "Used %zu KB for temporary ADS regset\n",
(temp_set.storage_max * sizeof(struct guc_mmio_reg)) >> 10);
return total * sizeof(struct guc_mmio_reg);
fail_regset_init:
kfree(temp_set.storage);
return ret;
}
static void guc_mmio_reg_state_init(struct intel_guc *guc)
{
struct intel_gt *gt = guc_to_gt(guc);
struct intel_engine_cs *engine;
enum intel_engine_id id;
u32 addr_ggtt, offset;
offset = guc_ads_regset_offset(guc);
addr_ggtt = intel_guc_ggtt_offset(guc, guc->ads_vma) + offset;
iosys_map_memcpy_to(&guc->ads_map, offset, guc->ads_regset,
guc->ads_regset_size);
for_each_engine(engine, gt, id) {
u32 count = guc->ads_regset_count[id];
u8 guc_class;
/* Class index is checked in class converter */
GEM_BUG_ON(engine->instance >= GUC_MAX_INSTANCES_PER_CLASS);
guc_class = engine_class_to_guc_class(engine->class);
if (!count) {
ads_blob_write(guc,
ads.reg_state_list[guc_class][engine->instance].address,
0);
ads_blob_write(guc,
ads.reg_state_list[guc_class][engine->instance].count,
0);
continue;
}
ads_blob_write(guc,
ads.reg_state_list[guc_class][engine->instance].address,
addr_ggtt);
ads_blob_write(guc,
ads.reg_state_list[guc_class][engine->instance].count,
count);
addr_ggtt += count * sizeof(struct guc_mmio_reg);
}
}
static void fill_engine_enable_masks(struct intel_gt *gt,
struct iosys_map *info_map)
{
info_map_write(info_map, engine_enabled_masks[GUC_RENDER_CLASS], RCS_MASK(gt));
info_map_write(info_map, engine_enabled_masks[GUC_COMPUTE_CLASS], CCS_MASK(gt));
info_map_write(info_map, engine_enabled_masks[GUC_BLITTER_CLASS], BCS_MASK(gt));
info_map_write(info_map, engine_enabled_masks[GUC_VIDEO_CLASS], VDBOX_MASK(gt));
info_map_write(info_map, engine_enabled_masks[GUC_VIDEOENHANCE_CLASS], VEBOX_MASK(gt));
/* The GSC engine is an instance (6) of OTHER_CLASS */
if (gt->engine[GSC0])
info_map_write(info_map, engine_enabled_masks[GUC_GSC_OTHER_CLASS],
BIT(gt->engine[GSC0]->instance));
}
#define LR_HW_CONTEXT_SIZE (80 * sizeof(u32))
#define XEHP_LR_HW_CONTEXT_SIZE (96 * sizeof(u32))
#define LR_HW_CONTEXT_SZ(i915) (GRAPHICS_VER_FULL(i915) >= IP_VER(12, 50) ? \
XEHP_LR_HW_CONTEXT_SIZE : \
LR_HW_CONTEXT_SIZE)
#define LRC_SKIP_SIZE(i915) (LRC_PPHWSP_SZ * PAGE_SIZE + LR_HW_CONTEXT_SZ(i915))
static int guc_prep_golden_context(struct intel_guc *guc)
{
struct intel_gt *gt = guc_to_gt(guc);
u32 addr_ggtt, offset;
u32 total_size = 0, alloc_size, real_size;
u8 engine_class, guc_class;
struct guc_gt_system_info local_info;
struct iosys_map info_map;
/*
* Reserve the memory for the golden contexts and point GuC at it but
* leave it empty for now. The context data will be filled in later
* once there is something available to put there.
*
* Note that the HWSP and ring context are not included.
*
* Note also that the storage must be pinned in the GGTT, so that the
* address won't change after GuC has been told where to find it. The
* GuC will also validate that the LRC base + size fall within the
* allowed GGTT range.
*/
if (!iosys_map_is_null(&guc->ads_map)) {
offset = guc_ads_golden_ctxt_offset(guc);
addr_ggtt = intel_guc_ggtt_offset(guc, guc->ads_vma) + offset;
info_map = IOSYS_MAP_INIT_OFFSET(&guc->ads_map,
offsetof(struct __guc_ads_blob, system_info));
} else {
memset(&local_info, 0, sizeof(local_info));
iosys_map_set_vaddr(&info_map, &local_info);
fill_engine_enable_masks(gt, &info_map);
}
for (engine_class = 0; engine_class <= MAX_ENGINE_CLASS; ++engine_class) {
guc_class = engine_class_to_guc_class(engine_class);
if (!info_map_read(&info_map, engine_enabled_masks[guc_class]))
continue;
real_size = intel_engine_context_size(gt, engine_class);
alloc_size = PAGE_ALIGN(real_size);
total_size += alloc_size;
if (iosys_map_is_null(&guc->ads_map))
continue;
/*
* This interface is slightly confusing. We need to pass the
* base address of the full golden context and the size of just
* the engine state, which is the section of the context image
* that starts after the execlists context. This is required to
* allow the GuC to restore just the engine state when a
* watchdog reset occurs.
* We calculate the engine state size by removing the size of
* what comes before it in the context image (which is identical
* on all engines).
*/
ads_blob_write(guc, ads.eng_state_size[guc_class],
real_size - LRC_SKIP_SIZE(gt->i915));
ads_blob_write(guc, ads.golden_context_lrca[guc_class],
addr_ggtt);
addr_ggtt += alloc_size;
}
/* Make sure current size matches what we calculated previously */
if (guc->ads_golden_ctxt_size)
GEM_BUG_ON(guc->ads_golden_ctxt_size != total_size);
return total_size;
}
static struct intel_engine_cs *find_engine_state(struct intel_gt *gt, u8 engine_class)
{
struct intel_engine_cs *engine;
enum intel_engine_id id;
for_each_engine(engine, gt, id) {
if (engine->class != engine_class)
continue;
if (!engine->default_state)
continue;
return engine;
}
return NULL;
}
static void guc_init_golden_context(struct intel_guc *guc)
{
struct intel_engine_cs *engine;
struct intel_gt *gt = guc_to_gt(guc);
unsigned long offset;
u32 addr_ggtt, total_size = 0, alloc_size, real_size;
u8 engine_class, guc_class;
if (!intel_uc_uses_guc_submission(&gt->uc))
return;
GEM_BUG_ON(iosys_map_is_null(&guc->ads_map));
/*
* Go back and fill in the golden context data now that it is
* available.
*/
offset = guc_ads_golden_ctxt_offset(guc);
addr_ggtt = intel_guc_ggtt_offset(guc, guc->ads_vma) + offset;
for (engine_class = 0; engine_class <= MAX_ENGINE_CLASS; ++engine_class) {
guc_class = engine_class_to_guc_class(engine_class);
if (!ads_blob_read(guc, system_info.engine_enabled_masks[guc_class]))
continue;
real_size = intel_engine_context_size(gt, engine_class);
alloc_size = PAGE_ALIGN(real_size);
total_size += alloc_size;
engine = find_engine_state(gt, engine_class);
if (!engine) {
guc_err(guc, "No engine state recorded for class %d!\n",
engine_class);
ads_blob_write(guc, ads.eng_state_size[guc_class], 0);
ads_blob_write(guc, ads.golden_context_lrca[guc_class], 0);
continue;
}
GEM_BUG_ON(ads_blob_read(guc, ads.eng_state_size[guc_class]) !=
real_size - LRC_SKIP_SIZE(gt->i915));
GEM_BUG_ON(ads_blob_read(guc, ads.golden_context_lrca[guc_class]) != addr_ggtt);
addr_ggtt += alloc_size;
shmem_read_to_iosys_map(engine->default_state, 0, &guc->ads_map,
offset, real_size);
offset += alloc_size;
}
GEM_BUG_ON(guc->ads_golden_ctxt_size != total_size);
}
static int
guc_capture_prep_lists(struct intel_guc *guc)
{
struct intel_gt *gt = guc_to_gt(guc);
u32 ads_ggtt, capture_offset, null_ggtt, total_size = 0;
struct guc_gt_system_info local_info;
struct iosys_map info_map;
bool ads_is_mapped;
size_t size = 0;
void *ptr;
int i, j;
ads_is_mapped = !iosys_map_is_null(&guc->ads_map);
if (ads_is_mapped) {
capture_offset = guc_ads_capture_offset(guc);
ads_ggtt = intel_guc_ggtt_offset(guc, guc->ads_vma);
info_map = IOSYS_MAP_INIT_OFFSET(&guc->ads_map,
offsetof(struct __guc_ads_blob, system_info));
} else {
memset(&local_info, 0, sizeof(local_info));
iosys_map_set_vaddr(&info_map, &local_info);
fill_engine_enable_masks(gt, &info_map);
}
/* first, set aside the first page for a capture_list with zero descriptors */
total_size = PAGE_SIZE;
if (ads_is_mapped) {
if (!intel_guc_capture_getnullheader(guc, &ptr, &size))
iosys_map_memcpy_to(&guc->ads_map, capture_offset, ptr, size);
null_ggtt = ads_ggtt + capture_offset;
capture_offset += PAGE_SIZE;
}
for (i = 0; i < GUC_CAPTURE_LIST_INDEX_MAX; i++) {
for (j = 0; j < GUC_MAX_ENGINE_CLASSES; j++) {
/* null list if we dont have said engine or list */
if (!info_map_read(&info_map, engine_enabled_masks[j])) {
if (ads_is_mapped) {
ads_blob_write(guc, ads.capture_class[i][j], null_ggtt);
ads_blob_write(guc, ads.capture_instance[i][j], null_ggtt);
}
continue;
}
if (intel_guc_capture_getlistsize(guc, i,
GUC_CAPTURE_LIST_TYPE_ENGINE_CLASS,
j, &size)) {
if (ads_is_mapped)
ads_blob_write(guc, ads.capture_class[i][j], null_ggtt);
goto engine_instance_list;
}
total_size += size;
if (ads_is_mapped) {
if (total_size > guc->ads_capture_size ||
intel_guc_capture_getlist(guc, i,
GUC_CAPTURE_LIST_TYPE_ENGINE_CLASS,
j, &ptr)) {
ads_blob_write(guc, ads.capture_class[i][j], null_ggtt);
continue;
}
ads_blob_write(guc, ads.capture_class[i][j], ads_ggtt +
capture_offset);
iosys_map_memcpy_to(&guc->ads_map, capture_offset, ptr, size);
capture_offset += size;
}
engine_instance_list:
if (intel_guc_capture_getlistsize(guc, i,
GUC_CAPTURE_LIST_TYPE_ENGINE_INSTANCE,
j, &size)) {
if (ads_is_mapped)
ads_blob_write(guc, ads.capture_instance[i][j], null_ggtt);
continue;
}
total_size += size;
if (ads_is_mapped) {
if (total_size > guc->ads_capture_size ||
intel_guc_capture_getlist(guc, i,
GUC_CAPTURE_LIST_TYPE_ENGINE_INSTANCE,
j, &ptr)) {
ads_blob_write(guc, ads.capture_instance[i][j], null_ggtt);
continue;
}
ads_blob_write(guc, ads.capture_instance[i][j], ads_ggtt +
capture_offset);
iosys_map_memcpy_to(&guc->ads_map, capture_offset, ptr, size);
capture_offset += size;
}
}
if (intel_guc_capture_getlistsize(guc, i, GUC_CAPTURE_LIST_TYPE_GLOBAL, 0, &size)) {
if (ads_is_mapped)
ads_blob_write(guc, ads.capture_global[i], null_ggtt);
continue;
}
total_size += size;
if (ads_is_mapped) {
if (total_size > guc->ads_capture_size ||
intel_guc_capture_getlist(guc, i, GUC_CAPTURE_LIST_TYPE_GLOBAL, 0,
&ptr)) {
ads_blob_write(guc, ads.capture_global[i], null_ggtt);
continue;
}
ads_blob_write(guc, ads.capture_global[i], ads_ggtt + capture_offset);
iosys_map_memcpy_to(&guc->ads_map, capture_offset, ptr, size);
capture_offset += size;
}
}
if (guc->ads_capture_size && guc->ads_capture_size != PAGE_ALIGN(total_size))
guc_warn(guc, "ADS capture alloc size changed from %d to %d\n",
guc->ads_capture_size, PAGE_ALIGN(total_size));
return PAGE_ALIGN(total_size);
}
static void __guc_ads_init(struct intel_guc *guc)
{
struct intel_gt *gt = guc_to_gt(guc);
struct drm_i915_private *i915 = gt->i915;
struct iosys_map info_map = IOSYS_MAP_INIT_OFFSET(&guc->ads_map,
offsetof(struct __guc_ads_blob, system_info));
u32 base;
/* GuC scheduling policies */
guc_policies_init(guc);
/* System info */
fill_engine_enable_masks(gt, &info_map);
ads_blob_write(guc, system_info.generic_gt_sysinfo[GUC_GENERIC_GT_SYSINFO_SLICE_ENABLED],
hweight8(gt->info.sseu.slice_mask));
ads_blob_write(guc, system_info.generic_gt_sysinfo[GUC_GENERIC_GT_SYSINFO_VDBOX_SFC_SUPPORT_MASK],
gt->info.vdbox_sfc_access);
if (GRAPHICS_VER(i915) >= 12 && !IS_DGFX(i915)) {
u32 distdbreg = intel_uncore_read(gt->uncore,
GEN12_DIST_DBS_POPULATED);
ads_blob_write(guc,
system_info.generic_gt_sysinfo[GUC_GENERIC_GT_SYSINFO_DOORBELL_COUNT_PER_SQIDI],
((distdbreg >> GEN12_DOORBELLS_PER_SQIDI_SHIFT)
& GEN12_DOORBELLS_PER_SQIDI) + 1);
}
/* Golden contexts for re-initialising after a watchdog reset */
guc_prep_golden_context(guc);
guc_mapping_table_init(guc_to_gt(guc), &info_map);
base = intel_guc_ggtt_offset(guc, guc->ads_vma);
/* Lists for error capture debug */
guc_capture_prep_lists(guc);
/* ADS */
ads_blob_write(guc, ads.scheduler_policies, base +
offsetof(struct __guc_ads_blob, policies));
ads_blob_write(guc, ads.gt_system_info, base +
offsetof(struct __guc_ads_blob, system_info));
/* MMIO save/restore list */
guc_mmio_reg_state_init(guc);
/* Private Data */
ads_blob_write(guc, ads.private_data, base +
guc_ads_private_data_offset(guc));
i915_gem_object_flush_map(guc->ads_vma->obj);
}
/**
* intel_guc_ads_create() - allocates and initializes GuC ADS.
* @guc: intel_guc struct
*
* GuC needs memory block (Additional Data Struct), where it will store
* some data. Allocate and initialize such memory block for GuC use.
*/
int intel_guc_ads_create(struct intel_guc *guc)
{
void *ads_blob;
u32 size;
int ret;
GEM_BUG_ON(guc->ads_vma);
/*
* Create reg state size dynamically on system memory to be copied to
* the final ads blob on gt init/reset
*/
ret = guc_mmio_reg_state_create(guc);
if (ret < 0)
return ret;
guc->ads_regset_size = ret;
/* Likewise the golden contexts: */
ret = guc_prep_golden_context(guc);
if (ret < 0)
return ret;
guc->ads_golden_ctxt_size = ret;
/* Likewise the capture lists: */
ret = guc_capture_prep_lists(guc);
if (ret < 0)
return ret;
guc->ads_capture_size = ret;
/* Now the total size can be determined: */
size = guc_ads_blob_size(guc);
ret = intel_guc_allocate_and_map_vma(guc, size, &guc->ads_vma,
&ads_blob);
if (ret)
return ret;
if (i915_gem_object_is_lmem(guc->ads_vma->obj))
iosys_map_set_vaddr_iomem(&guc->ads_map, (void __iomem *)ads_blob);
else
iosys_map_set_vaddr(&guc->ads_map, ads_blob);
__guc_ads_init(guc);
return 0;
}
void intel_guc_ads_init_late(struct intel_guc *guc)
{
/*
* The golden context setup requires the saved engine state from
* __engines_record_defaults(). However, that requires engines to be
* operational which means the ADS must already have been configured.
* Fortunately, the golden context state is not needed until a hang
* occurs, so it can be filled in during this late init phase.
*/
guc_init_golden_context(guc);
}
void intel_guc_ads_destroy(struct intel_guc *guc)
{
i915_vma_unpin_and_release(&guc->ads_vma, I915_VMA_RELEASE_MAP);
iosys_map_clear(&guc->ads_map);
kfree(guc->ads_regset);
}
static void guc_ads_private_data_reset(struct intel_guc *guc)
{
u32 size;
size = guc_ads_private_data_size(guc);
if (!size)
return;
iosys_map_memset(&guc->ads_map, guc_ads_private_data_offset(guc),
0, size);
}
/**
* intel_guc_ads_reset() - prepares GuC Additional Data Struct for reuse
* @guc: intel_guc struct
*
* GuC stores some data in ADS, which might be stale after a reset.
* Reinitialize whole ADS in case any part of it was corrupted during
* previous GuC run.
*/
void intel_guc_ads_reset(struct intel_guc *guc)
{
if (!guc->ads_vma)
return;
__guc_ads_init(guc);
guc_ads_private_data_reset(guc);
}
u32 intel_guc_engine_usage_offset(struct intel_guc *guc)
{
return intel_guc_ggtt_offset(guc, guc->ads_vma) +
offsetof(struct __guc_ads_blob, engine_usage);
}
struct iosys_map intel_guc_engine_usage_record_map(struct intel_engine_cs *engine)
{
struct intel_guc *guc = &engine->gt->uc.guc;
u8 guc_class = engine_class_to_guc_class(engine->class);
size_t offset = offsetof(struct __guc_ads_blob,
engine_usage.engines[guc_class][ilog2(engine->logical_mask)]);
return IOSYS_MAP_INIT_OFFSET(&guc->ads_map, offset);
}