diff options
Diffstat (limited to 'drivers/gpu/drm/i915/gt/uc/intel_guc_capture.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/uc/intel_guc_capture.c | 374 |
1 files changed, 374 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_capture.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_capture.c new file mode 100644 index 000000000000..4adfa14699d4 --- /dev/null +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_capture.c @@ -0,0 +1,374 @@ +// SPDX-License-Identifier: MIT +/* + * Copyright © 2021-2022 Intel Corporation + */ + +#include <linux/types.h> + +#include <drm/drm_print.h> + +#include "gt/intel_engine_regs.h" +#include "gt/intel_gt.h" +#include "gt/intel_gt_regs.h" +#include "guc_capture_fwif.h" +#include "intel_guc_capture.h" +#include "intel_guc_fwif.h" +#include "i915_drv.h" +#include "i915_memcpy.h" +#include "i915_reg.h" + +/* + * Define all device tables of GuC error capture register lists + * NOTE: For engine-registers, GuC only needs the register offsets + * from the engine-mmio-base + */ +/* XE_LPD - Global */ +static const struct __guc_mmio_reg_descr xe_lpd_global_regs[] = { + { GEN12_RING_FAULT_REG, 0, 0, "GEN12_RING_FAULT_REG" } +}; + +/* XE_LPD - Render / Compute Per-Class */ +static const struct __guc_mmio_reg_descr xe_lpd_rc_class_regs[] = { + { EIR, 0, 0, "EIR" } +}; + +/* XE_LPD - Render / Compute Per-Engine-Instance */ +static const struct __guc_mmio_reg_descr xe_lpd_rc_inst_regs[] = { + { RING_HEAD(0), 0, 0, "RING_HEAD" }, + { RING_TAIL(0), 0, 0, "RING_TAIL" }, +}; + +/* XE_LPD - Media Decode/Encode Per-Class */ +static const struct __guc_mmio_reg_descr xe_lpd_vd_class_regs[] = { +}; + +/* XE_LPD - Media Decode/Encode Per-Engine-Instance */ +static const struct __guc_mmio_reg_descr xe_lpd_vd_inst_regs[] = { + { RING_HEAD(0), 0, 0, "RING_HEAD" }, + { RING_TAIL(0), 0, 0, "RING_TAIL" }, +}; + +/* XE_LPD - Video Enhancement Per-Class */ +static const struct __guc_mmio_reg_descr xe_lpd_vec_class_regs[] = { +}; + +/* XE_LPD - Video Enhancement Per-Engine-Instance */ +static const struct __guc_mmio_reg_descr xe_lpd_vec_inst_regs[] = { + { RING_HEAD(0), 0, 0, "RING_HEAD" }, + { RING_TAIL(0), 0, 0, "RING_TAIL" }, +}; + +#define TO_GCAP_DEF_OWNER(x) (GUC_CAPTURE_LIST_INDEX_##x) +#define TO_GCAP_DEF_TYPE(x) (GUC_CAPTURE_LIST_TYPE_##x) +#define MAKE_REGLIST(regslist, regsowner, regstype, class) \ + { \ + regslist, \ + ARRAY_SIZE(regslist), \ + TO_GCAP_DEF_OWNER(regsowner), \ + TO_GCAP_DEF_TYPE(regstype), \ + class, \ + } + +/* List of lists */ +static const struct __guc_mmio_reg_descr_group xe_lpd_lists[] = { + MAKE_REGLIST(xe_lpd_global_regs, PF, GLOBAL, 0), + MAKE_REGLIST(xe_lpd_rc_class_regs, PF, ENGINE_CLASS, GUC_RENDER_CLASS), + MAKE_REGLIST(xe_lpd_rc_inst_regs, PF, ENGINE_INSTANCE, GUC_RENDER_CLASS), + MAKE_REGLIST(xe_lpd_vd_class_regs, PF, ENGINE_CLASS, GUC_VIDEO_CLASS), + MAKE_REGLIST(xe_lpd_vd_inst_regs, PF, ENGINE_INSTANCE, GUC_VIDEO_CLASS), + MAKE_REGLIST(xe_lpd_vec_class_regs, PF, ENGINE_CLASS, GUC_VIDEOENHANCE_CLASS), + MAKE_REGLIST(xe_lpd_vec_inst_regs, PF, ENGINE_INSTANCE, GUC_VIDEOENHANCE_CLASS), + {} +}; + +static const struct __guc_mmio_reg_descr_group * +guc_capture_get_device_reglist(struct intel_guc *guc) +{ + struct drm_i915_private *i915 = guc_to_gt(guc)->i915; + + if (IS_TIGERLAKE(i915) || IS_ROCKETLAKE(i915) || + IS_ALDERLAKE_S(i915) || IS_ALDERLAKE_P(i915)) { + return xe_lpd_lists; + } + + return NULL; +} + +static const struct __guc_mmio_reg_descr_group * +guc_capture_get_one_list(const struct __guc_mmio_reg_descr_group *reglists, + u32 owner, u32 type, u32 id) +{ + int i; + + if (!reglists) + return NULL; + + for (i = 0; reglists[i].list; ++i) { + if (reglists[i].owner == owner && reglists[i].type == type && + (reglists[i].engine == id || reglists[i].type == GUC_CAPTURE_LIST_TYPE_GLOBAL)) + return ®lists[i]; + } + + return NULL; +} + +static const char * +__stringify_owner(u32 owner) +{ + switch (owner) { + case GUC_CAPTURE_LIST_INDEX_PF: + return "PF"; + case GUC_CAPTURE_LIST_INDEX_VF: + return "VF"; + default: + return "unknown"; + } + + return ""; +} + +static const char * +__stringify_type(u32 type) +{ + switch (type) { + case GUC_CAPTURE_LIST_TYPE_GLOBAL: + return "Global"; + case GUC_CAPTURE_LIST_TYPE_ENGINE_CLASS: + return "Class"; + case GUC_CAPTURE_LIST_TYPE_ENGINE_INSTANCE: + return "Instance"; + default: + return "unknown"; + } + + return ""; +} + +static const char * +__stringify_engclass(u32 class) +{ + switch (class) { + case GUC_RENDER_CLASS: + return "Render"; + case GUC_VIDEO_CLASS: + return "Video"; + case GUC_VIDEOENHANCE_CLASS: + return "VideoEnhance"; + case GUC_BLITTER_CLASS: + return "Blitter"; + case GUC_COMPUTE_CLASS: + return "Compute"; + default: + return "unknown"; + } + + return ""; +} + +static void +guc_capture_warn_with_list_info(struct drm_i915_private *i915, char *msg, + u32 owner, u32 type, u32 classid) +{ + if (type == GUC_CAPTURE_LIST_TYPE_GLOBAL) + drm_dbg(&i915->drm, "GuC-capture: %s for %s %s-Registers.\n", msg, + __stringify_owner(owner), __stringify_type(type)); + else + drm_dbg(&i915->drm, "GuC-capture: %s for %s %s-Registers on %s-Engine\n", msg, + __stringify_owner(owner), __stringify_type(type), + __stringify_engclass(classid)); +} + +static int +guc_capture_list_init(struct intel_guc *guc, u32 owner, u32 type, u32 classid, + struct guc_mmio_reg *ptr, u16 num_entries) +{ + u32 i = 0; + struct drm_i915_private *i915 = guc_to_gt(guc)->i915; + const struct __guc_mmio_reg_descr_group *reglists = guc->capture->reglists; + const struct __guc_mmio_reg_descr_group *match; + + if (!reglists) + return -ENODEV; + + match = guc_capture_get_one_list(reglists, owner, type, classid); + if (match) { + for (i = 0; i < num_entries && i < match->num_regs; ++i) { + ptr[i].offset = match->list[i].reg.reg; + ptr[i].value = 0xDEADF00D; + ptr[i].flags = match->list[i].flags; + ptr[i].mask = match->list[i].mask; + } + return 0; + } + + guc_capture_warn_with_list_info(i915, "Missing register list init", owner, type, + classid); + + return -ENODATA; +} + +static int +guc_cap_list_num_regs(struct intel_guc_state_capture *gc, u32 owner, u32 type, u32 classid) +{ + const struct __guc_mmio_reg_descr_group *match; + + match = guc_capture_get_one_list(gc->reglists, owner, type, classid); + if (!match) + return 0; + + return match->num_regs; +} + +int +intel_guc_capture_getlistsize(struct intel_guc *guc, u32 owner, u32 type, u32 classid, + size_t *size) +{ + struct drm_i915_private *i915 = guc_to_gt(guc)->i915; + struct intel_guc_state_capture *gc = guc->capture; + struct __guc_capture_ads_cache *cache = &gc->ads_cache[owner][type][classid]; + int num_regs; + + if (!gc->reglists) + return -ENODEV; + + if (cache->is_valid) { + *size = cache->size; + return cache->status; + } + + num_regs = guc_cap_list_num_regs(gc, owner, type, classid); + if (!num_regs) { + guc_capture_warn_with_list_info(i915, "Missing register list size", + owner, type, classid); + return -ENODATA; + } + + *size = PAGE_ALIGN((sizeof(struct guc_debug_capture_list)) + + (num_regs * sizeof(struct guc_mmio_reg))); + + return 0; +} + +int +intel_guc_capture_getlist(struct intel_guc *guc, u32 owner, u32 type, u32 classid, + void **outptr) +{ + struct intel_guc_state_capture *gc = guc->capture; + struct __guc_capture_ads_cache *cache = &gc->ads_cache[owner][type][classid]; + struct drm_i915_private *i915 = guc_to_gt(guc)->i915; + struct guc_debug_capture_list *listnode; + int ret, num_regs; + u8 *caplist, *tmp; + size_t size = 0; + + if (!gc->reglists) + return -ENODEV; + + if (cache->is_valid) { + *outptr = cache->ptr; + return cache->status; + } + + ret = intel_guc_capture_getlistsize(guc, owner, type, classid, &size); + if (ret) { + cache->is_valid = true; + cache->ptr = NULL; + cache->size = 0; + cache->status = ret; + return ret; + } + + caplist = kzalloc(size, GFP_KERNEL); + if (!caplist) { + drm_dbg(&i915->drm, "GuC-capture: failed to alloc cached caplist"); + return -ENOMEM; + } + + /* populate capture list header */ + tmp = caplist; + num_regs = guc_cap_list_num_regs(guc->capture, owner, type, classid); + listnode = (struct guc_debug_capture_list *)tmp; + listnode->header.info = FIELD_PREP(GUC_CAPTURELISTHDR_NUMDESCR, (u32)num_regs); + + /* populate list of register descriptor */ + tmp += sizeof(struct guc_debug_capture_list); + guc_capture_list_init(guc, owner, type, classid, (struct guc_mmio_reg *)tmp, num_regs); + + /* cache this list */ + cache->is_valid = true; + cache->ptr = caplist; + cache->size = size; + cache->status = 0; + + *outptr = caplist; + + return 0; +} + +int +intel_guc_capture_getnullheader(struct intel_guc *guc, + void **outptr, size_t *size) +{ + struct intel_guc_state_capture *gc = guc->capture; + struct drm_i915_private *i915 = guc_to_gt(guc)->i915; + int tmp = sizeof(u32) * 4; + void *null_header; + + if (gc->ads_null_cache) { + *outptr = gc->ads_null_cache; + *size = tmp; + return 0; + } + + null_header = kzalloc(tmp, GFP_KERNEL); + if (!null_header) { + drm_dbg(&i915->drm, "GuC-capture: failed to alloc cached nulllist"); + return -ENOMEM; + } + + gc->ads_null_cache = null_header; + *outptr = null_header; + *size = tmp; + + return 0; +} + +static void +guc_capture_free_ads_cache(struct intel_guc_state_capture *gc) +{ + int i, j, k; + struct __guc_capture_ads_cache *cache; + + for (i = 0; i < GUC_CAPTURE_LIST_INDEX_MAX; ++i) { + for (j = 0; j < GUC_CAPTURE_LIST_TYPE_MAX; ++j) { + for (k = 0; k < GUC_MAX_ENGINE_CLASSES; ++k) { + cache = &gc->ads_cache[i][j][k]; + if (cache->is_valid) + kfree(cache->ptr); + } + } + } + kfree(gc->ads_null_cache); +} + +void intel_guc_capture_destroy(struct intel_guc *guc) +{ + if (!guc->capture) + return; + + guc_capture_free_ads_cache(guc->capture); + + kfree(guc->capture); + guc->capture = NULL; +} + +int intel_guc_capture_init(struct intel_guc *guc) +{ + guc->capture = kzalloc(sizeof(*guc->capture), GFP_KERNEL); + if (!guc->capture) + return -ENOMEM; + + guc->capture->reglists = guc_capture_get_device_reglist(guc); + + return 0; +} |