From: John Harrison John.C.Harrison@Intel.com
[ Upstream commit 8ad0152afb1bb3878bba282308f037d73a87ace5 ]
The GuC log buffer sizes had to be configured statically at compile time. This can be quite troublesome when needing to get larger logs out of a released driver. So re-organise the code to allow a boot time module parameter override.
Signed-off-by: John Harrison John.C.Harrison@Intel.com Reviewed-by: Alan Previn alan.previn.teres.alexis@intel.com Link: https://patchwork.freedesktop.org/patch/msgid/20220728022028.2190627-7-John.... Stable-dep-of: befb231d5de2 ("drm/i915/guc: Fix GuC error capture sizing estimation and reporting") Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/i915/gt/uc/intel_guc.c | 53 ++---- .../gpu/drm/i915/gt/uc/intel_guc_capture.c | 14 +- drivers/gpu/drm/i915/gt/uc/intel_guc_log.c | 176 +++++++++++++++++- drivers/gpu/drm/i915/gt/uc/intel_guc_log.h | 42 +++-- drivers/gpu/drm/i915/i915_params.c | 12 ++ drivers/gpu/drm/i915/i915_params.h | 3 + 6 files changed, 226 insertions(+), 74 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc.c b/drivers/gpu/drm/i915/gt/uc/intel_guc.c index 2706a8c65090..7fbcfeda9195 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc.c @@ -224,53 +224,22 @@ static u32 guc_ctl_feature_flags(struct intel_guc *guc)
static u32 guc_ctl_log_params_flags(struct intel_guc *guc) { - u32 offset = intel_guc_ggtt_offset(guc, guc->log.vma) >> PAGE_SHIFT; - u32 flags; - - #if (((CRASH_BUFFER_SIZE) % SZ_1M) == 0) - #define LOG_UNIT SZ_1M - #define LOG_FLAG GUC_LOG_LOG_ALLOC_UNITS - #else - #define LOG_UNIT SZ_4K - #define LOG_FLAG 0 - #endif - - #if (((CAPTURE_BUFFER_SIZE) % SZ_1M) == 0) - #define CAPTURE_UNIT SZ_1M - #define CAPTURE_FLAG GUC_LOG_CAPTURE_ALLOC_UNITS - #else - #define CAPTURE_UNIT SZ_4K - #define CAPTURE_FLAG 0 - #endif - - BUILD_BUG_ON(!CRASH_BUFFER_SIZE); - BUILD_BUG_ON(!IS_ALIGNED(CRASH_BUFFER_SIZE, LOG_UNIT)); - BUILD_BUG_ON(!DEBUG_BUFFER_SIZE); - BUILD_BUG_ON(!IS_ALIGNED(DEBUG_BUFFER_SIZE, LOG_UNIT)); - BUILD_BUG_ON(!CAPTURE_BUFFER_SIZE); - BUILD_BUG_ON(!IS_ALIGNED(CAPTURE_BUFFER_SIZE, CAPTURE_UNIT)); - - BUILD_BUG_ON((CRASH_BUFFER_SIZE / LOG_UNIT - 1) > - (GUC_LOG_CRASH_MASK >> GUC_LOG_CRASH_SHIFT)); - BUILD_BUG_ON((DEBUG_BUFFER_SIZE / LOG_UNIT - 1) > - (GUC_LOG_DEBUG_MASK >> GUC_LOG_DEBUG_SHIFT)); - BUILD_BUG_ON((CAPTURE_BUFFER_SIZE / CAPTURE_UNIT - 1) > - (GUC_LOG_CAPTURE_MASK >> GUC_LOG_CAPTURE_SHIFT)); + struct intel_guc_log *log = &guc->log; + u32 offset, flags; + + GEM_BUG_ON(!log->sizes_initialised); + + offset = intel_guc_ggtt_offset(guc, log->vma) >> PAGE_SHIFT;
flags = GUC_LOG_VALID | GUC_LOG_NOTIFY_ON_HALF_FULL | - CAPTURE_FLAG | - LOG_FLAG | - ((CRASH_BUFFER_SIZE / LOG_UNIT - 1) << GUC_LOG_CRASH_SHIFT) | - ((DEBUG_BUFFER_SIZE / LOG_UNIT - 1) << GUC_LOG_DEBUG_SHIFT) | - ((CAPTURE_BUFFER_SIZE / CAPTURE_UNIT - 1) << GUC_LOG_CAPTURE_SHIFT) | + log->sizes[GUC_LOG_SECTIONS_DEBUG].flag | + log->sizes[GUC_LOG_SECTIONS_CAPTURE].flag | + (log->sizes[GUC_LOG_SECTIONS_CRASH].count << GUC_LOG_CRASH_SHIFT) | + (log->sizes[GUC_LOG_SECTIONS_DEBUG].count << GUC_LOG_DEBUG_SHIFT) | + (log->sizes[GUC_LOG_SECTIONS_CAPTURE].count << GUC_LOG_CAPTURE_SHIFT) | (offset << GUC_LOG_BUF_ADDR_SHIFT);
- #undef LOG_UNIT - #undef LOG_FLAG - #undef CAPTURE_UNIT - #undef CAPTURE_FLAG - return flags; }
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_capture.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_capture.c index b54b7883320b..d2ac53d4f3b6 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_capture.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_capture.c @@ -656,16 +656,17 @@ static void check_guc_capture_size(struct intel_guc *guc) struct drm_i915_private *i915 = guc_to_gt(guc)->i915; int min_size = guc_capture_output_min_size_est(guc); int spare_size = min_size * GUC_CAPTURE_OVERBUFFER_MULTIPLIER; + u32 buffer_size = intel_guc_log_section_size_capture(&guc->log);
if (min_size < 0) drm_warn(&i915->drm, "Failed to calculate GuC error state capture buffer minimum size: %d!\n", min_size); - else if (min_size > CAPTURE_BUFFER_SIZE) + else if (min_size > buffer_size) drm_warn(&i915->drm, "GuC error state capture buffer is too small: %d < %d\n", - CAPTURE_BUFFER_SIZE, min_size); - else if (spare_size > CAPTURE_BUFFER_SIZE) + buffer_size, min_size); + else if (spare_size > buffer_size) drm_notice(&i915->drm, "GuC error state capture buffer maybe too small: %d < %d (min = %d)\n", - CAPTURE_BUFFER_SIZE, spare_size, min_size); + buffer_size, spare_size, min_size); }
/* @@ -1294,7 +1295,8 @@ static void __guc_capture_process_output(struct intel_guc *guc)
log_buf_state = guc->log.buf_addr + (sizeof(struct guc_log_buffer_state) * GUC_CAPTURE_LOG_BUFFER); - src_data = guc->log.buf_addr + intel_guc_get_log_buffer_offset(GUC_CAPTURE_LOG_BUFFER); + src_data = guc->log.buf_addr + + intel_guc_get_log_buffer_offset(&guc->log, GUC_CAPTURE_LOG_BUFFER);
/* * Make a copy of the state structure, inside GuC log buffer @@ -1302,7 +1304,7 @@ static void __guc_capture_process_output(struct intel_guc *guc) * from it multiple times. */ memcpy(&log_buf_state_local, log_buf_state, sizeof(struct guc_log_buffer_state)); - buffer_size = intel_guc_get_log_buffer_size(GUC_CAPTURE_LOG_BUFFER); + buffer_size = intel_guc_get_log_buffer_size(&guc->log, GUC_CAPTURE_LOG_BUFFER); read_offset = log_buf_state_local.read_ptr; write_offset = log_buf_state_local.sampled_write_ptr; full_count = log_buf_state_local.buffer_full_cnt; diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_log.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_log.c index 991d4a02248d..2b878030d3e1 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_log.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_log.c @@ -13,8 +13,158 @@ #include "intel_guc_capture.h" #include "intel_guc_log.h"
+#if defined(CONFIG_DRM_I915_DEBUG_GUC) +#define GUC_LOG_DEFAULT_CRASH_BUFFER_SIZE SZ_2M +#define GUC_LOG_DEFAULT_DEBUG_BUFFER_SIZE SZ_16M +#define GUC_LOG_DEFAULT_CAPTURE_BUFFER_SIZE SZ_4M +#elif defined(CONFIG_DRM_I915_DEBUG_GEM) +#define GUC_LOG_DEFAULT_CRASH_BUFFER_SIZE SZ_1M +#define GUC_LOG_DEFAULT_DEBUG_BUFFER_SIZE SZ_2M +#define GUC_LOG_DEFAULT_CAPTURE_BUFFER_SIZE SZ_4M +#else +#define GUC_LOG_DEFAULT_CRASH_BUFFER_SIZE SZ_8K +#define GUC_LOG_DEFAULT_DEBUG_BUFFER_SIZE SZ_64K +#define GUC_LOG_DEFAULT_CAPTURE_BUFFER_SIZE SZ_2M +#endif + static void guc_log_copy_debuglogs_for_relay(struct intel_guc_log *log);
+struct guc_log_section { + u32 max; + u32 flag; + u32 default_val; + const char *name; +}; + +static s32 scale_log_param(struct intel_guc_log *log, const struct guc_log_section *section, + s32 param) +{ + /* -1 means default */ + if (param < 0) + return section->default_val; + + /* Check for 32-bit overflow */ + if (param >= SZ_4K) { + drm_err(&guc_to_gt(log_to_guc(log))->i915->drm, "Size too large for GuC %s log: %dMB!", + section->name, param); + return section->default_val; + } + + /* Param units are 1MB */ + return param * SZ_1M; +} + +static void _guc_log_init_sizes(struct intel_guc_log *log) +{ + struct intel_guc *guc = log_to_guc(log); + struct drm_i915_private *i915 = guc_to_gt(guc)->i915; + static const struct guc_log_section sections[GUC_LOG_SECTIONS_LIMIT] = { + { + GUC_LOG_CRASH_MASK >> GUC_LOG_CRASH_SHIFT, + GUC_LOG_LOG_ALLOC_UNITS, + GUC_LOG_DEFAULT_CRASH_BUFFER_SIZE, + "crash dump" + }, + { + GUC_LOG_DEBUG_MASK >> GUC_LOG_DEBUG_SHIFT, + GUC_LOG_LOG_ALLOC_UNITS, + GUC_LOG_DEFAULT_DEBUG_BUFFER_SIZE, + "debug", + }, + { + GUC_LOG_CAPTURE_MASK >> GUC_LOG_CAPTURE_SHIFT, + GUC_LOG_CAPTURE_ALLOC_UNITS, + GUC_LOG_DEFAULT_CAPTURE_BUFFER_SIZE, + "capture", + } + }; + s32 params[GUC_LOG_SECTIONS_LIMIT] = { + i915->params.guc_log_size_crash, + i915->params.guc_log_size_debug, + i915->params.guc_log_size_capture, + }; + int i; + + for (i = 0; i < GUC_LOG_SECTIONS_LIMIT; i++) + log->sizes[i].bytes = scale_log_param(log, sections + i, params[i]); + + /* If debug size > 1MB then bump default crash size to keep the same units */ + if (log->sizes[GUC_LOG_SECTIONS_DEBUG].bytes >= SZ_1M && + (i915->params.guc_log_size_crash == -1) && + GUC_LOG_DEFAULT_CRASH_BUFFER_SIZE < SZ_1M) + log->sizes[GUC_LOG_SECTIONS_CRASH].bytes = SZ_1M; + + /* Prepare the GuC API structure fields: */ + for (i = 0; i < GUC_LOG_SECTIONS_LIMIT; i++) { + /* Convert to correct units */ + if ((log->sizes[i].bytes % SZ_1M) == 0) { + log->sizes[i].units = SZ_1M; + log->sizes[i].flag = sections[i].flag; + } else { + log->sizes[i].units = SZ_4K; + log->sizes[i].flag = 0; + } + + if (!IS_ALIGNED(log->sizes[i].bytes, log->sizes[i].units)) + drm_err(&i915->drm, "Mis-aligned GuC log %s size: 0x%X vs 0x%X!", + sections[i].name, log->sizes[i].bytes, log->sizes[i].units); + log->sizes[i].count = log->sizes[i].bytes / log->sizes[i].units; + + if (!log->sizes[i].count) { + drm_err(&i915->drm, "Zero GuC log %s size!", sections[i].name); + } else { + /* Size is +1 unit */ + log->sizes[i].count--; + } + + /* Clip to field size */ + if (log->sizes[i].count > sections[i].max) { + drm_err(&i915->drm, "GuC log %s size too large: %d vs %d!", + sections[i].name, log->sizes[i].count + 1, sections[i].max + 1); + log->sizes[i].count = sections[i].max; + } + } + + if (log->sizes[GUC_LOG_SECTIONS_CRASH].units != log->sizes[GUC_LOG_SECTIONS_DEBUG].units) { + drm_err(&i915->drm, "Unit mis-match for GuC log crash and debug sections: %d vs %d!", + log->sizes[GUC_LOG_SECTIONS_CRASH].units, + log->sizes[GUC_LOG_SECTIONS_DEBUG].units); + log->sizes[GUC_LOG_SECTIONS_CRASH].units = log->sizes[GUC_LOG_SECTIONS_DEBUG].units; + log->sizes[GUC_LOG_SECTIONS_CRASH].count = 0; + } + + log->sizes_initialised = true; +} + +static void guc_log_init_sizes(struct intel_guc_log *log) +{ + if (log->sizes_initialised) + return; + + _guc_log_init_sizes(log); +} + +static u32 intel_guc_log_section_size_crash(struct intel_guc_log *log) +{ + guc_log_init_sizes(log); + + return log->sizes[GUC_LOG_SECTIONS_CRASH].bytes; +} + +static u32 intel_guc_log_section_size_debug(struct intel_guc_log *log) +{ + guc_log_init_sizes(log); + + return log->sizes[GUC_LOG_SECTIONS_DEBUG].bytes; +} + +u32 intel_guc_log_section_size_capture(struct intel_guc_log *log) +{ + guc_log_init_sizes(log); + + return log->sizes[GUC_LOG_SECTIONS_CAPTURE].bytes; +} + static u32 intel_guc_log_size(struct intel_guc_log *log) { /* @@ -38,7 +188,10 @@ static u32 intel_guc_log_size(struct intel_guc_log *log) * | Capture logs | * +===============================+ + CAPTURE_SIZE */ - return PAGE_SIZE + CRASH_BUFFER_SIZE + DEBUG_BUFFER_SIZE + CAPTURE_BUFFER_SIZE; + return PAGE_SIZE + + intel_guc_log_section_size_crash(log) + + intel_guc_log_section_size_debug(log) + + intel_guc_log_section_size_capture(log); }
/** @@ -165,7 +318,8 @@ static void guc_move_to_next_buf(struct intel_guc_log *log) smp_wmb();
/* All data has been written, so now move the offset of sub buffer. */ - relay_reserve(log->relay.channel, log->vma->obj->base.size - CAPTURE_BUFFER_SIZE); + relay_reserve(log->relay.channel, log->vma->obj->base.size - + intel_guc_log_section_size_capture(log));
/* Switch to the next sub buffer */ relay_flush(log->relay.channel); @@ -210,15 +364,16 @@ bool intel_guc_check_log_buf_overflow(struct intel_guc_log *log, return overflow; }
-unsigned int intel_guc_get_log_buffer_size(enum guc_log_buffer_type type) +unsigned int intel_guc_get_log_buffer_size(struct intel_guc_log *log, + enum guc_log_buffer_type type) { switch (type) { case GUC_DEBUG_LOG_BUFFER: - return DEBUG_BUFFER_SIZE; + return intel_guc_log_section_size_debug(log); case GUC_CRASH_DUMP_LOG_BUFFER: - return CRASH_BUFFER_SIZE; + return intel_guc_log_section_size_crash(log); case GUC_CAPTURE_LOG_BUFFER: - return CAPTURE_BUFFER_SIZE; + return intel_guc_log_section_size_capture(log); default: MISSING_CASE(type); } @@ -226,7 +381,8 @@ unsigned int intel_guc_get_log_buffer_size(enum guc_log_buffer_type type) return 0; }
-size_t intel_guc_get_log_buffer_offset(enum guc_log_buffer_type type) +size_t intel_guc_get_log_buffer_offset(struct intel_guc_log *log, + enum guc_log_buffer_type type) { enum guc_log_buffer_type i; size_t offset = PAGE_SIZE;/* for the log_buffer_states */ @@ -234,7 +390,7 @@ size_t intel_guc_get_log_buffer_offset(enum guc_log_buffer_type type) for (i = GUC_DEBUG_LOG_BUFFER; i < GUC_MAX_LOG_BUFFER; ++i) { if (i == type) break; - offset += intel_guc_get_log_buffer_size(i); + offset += intel_guc_get_log_buffer_size(log, i); }
return offset; @@ -285,7 +441,7 @@ static void _guc_log_copy_debuglogs_for_relay(struct intel_guc_log *log) */ memcpy(&log_buf_state_local, log_buf_state, sizeof(struct guc_log_buffer_state)); - buffer_size = intel_guc_get_log_buffer_size(type); + buffer_size = intel_guc_get_log_buffer_size(log, type); read_offset = log_buf_state_local.read_ptr; write_offset = log_buf_state_local.sampled_write_ptr; full_cnt = log_buf_state_local.buffer_full_cnt; @@ -400,7 +556,7 @@ static int guc_log_relay_create(struct intel_guc_log *log) * Keep the size of sub buffers same as shared log buffer * but GuC log-events excludes the error-state-capture logs */ - subbuf_size = log->vma->size - CAPTURE_BUFFER_SIZE; + subbuf_size = log->vma->size - intel_guc_log_section_size_capture(log);
/* * Store up to 8 snapshots, which is large enough to buffer sufficient diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_log.h b/drivers/gpu/drm/i915/gt/uc/intel_guc_log.h index dc9715411d62..02127703be80 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_log.h +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_log.h @@ -15,20 +15,6 @@
struct intel_guc;
-#if defined(CONFIG_DRM_I915_DEBUG_GUC) -#define CRASH_BUFFER_SIZE SZ_2M -#define DEBUG_BUFFER_SIZE SZ_16M -#define CAPTURE_BUFFER_SIZE SZ_4M -#elif defined(CONFIG_DRM_I915_DEBUG_GEM) -#define CRASH_BUFFER_SIZE SZ_1M -#define DEBUG_BUFFER_SIZE SZ_2M -#define CAPTURE_BUFFER_SIZE SZ_4M -#else -#define CRASH_BUFFER_SIZE SZ_8K -#define DEBUG_BUFFER_SIZE SZ_64K -#define CAPTURE_BUFFER_SIZE SZ_2M -#endif - /* * While we're using plain log level in i915, GuC controls are much more... * "elaborate"? We have a couple of bits for verbosity, separate bit for actual @@ -46,10 +32,30 @@ struct intel_guc; #define GUC_VERBOSITY_TO_LOG_LEVEL(x) ((x) + 2) #define GUC_LOG_LEVEL_MAX GUC_VERBOSITY_TO_LOG_LEVEL(GUC_LOG_VERBOSITY_MAX)
+enum { + GUC_LOG_SECTIONS_CRASH, + GUC_LOG_SECTIONS_DEBUG, + GUC_LOG_SECTIONS_CAPTURE, + GUC_LOG_SECTIONS_LIMIT +}; + struct intel_guc_log { u32 level; + + /* Allocation settings */ + struct { + s32 bytes; /* Size in bytes */ + s32 units; /* GuC API units - 1MB or 4KB */ + s32 count; /* Number of API units */ + u32 flag; /* GuC API units flag */ + } sizes[GUC_LOG_SECTIONS_LIMIT]; + bool sizes_initialised; + + /* Combined buffer allocation */ struct i915_vma *vma; void *buf_addr; + + /* RelayFS support */ struct { bool buf_in_use; bool started; @@ -58,6 +64,7 @@ struct intel_guc_log { struct mutex lock; u32 full_count; } relay; + /* logging related stats */ struct { u32 sampled_overflow; @@ -69,8 +76,9 @@ struct intel_guc_log { void intel_guc_log_init_early(struct intel_guc_log *log); bool intel_guc_check_log_buf_overflow(struct intel_guc_log *log, enum guc_log_buffer_type type, unsigned int full_cnt); -unsigned int intel_guc_get_log_buffer_size(enum guc_log_buffer_type type); -size_t intel_guc_get_log_buffer_offset(enum guc_log_buffer_type type); +unsigned int intel_guc_get_log_buffer_size(struct intel_guc_log *log, + enum guc_log_buffer_type type); +size_t intel_guc_get_log_buffer_offset(struct intel_guc_log *log, enum guc_log_buffer_type type); int intel_guc_log_create(struct intel_guc_log *log); void intel_guc_log_destroy(struct intel_guc_log *log);
@@ -92,4 +100,6 @@ void intel_guc_log_info(struct intel_guc_log *log, struct drm_printer *p); int intel_guc_log_dump(struct intel_guc_log *log, struct drm_printer *p, bool dump_load_err);
+u32 intel_guc_log_section_size_capture(struct intel_guc_log *log); + #endif diff --git a/drivers/gpu/drm/i915/i915_params.c b/drivers/gpu/drm/i915/i915_params.c index 6fc475a5db61..06ca5b822111 100644 --- a/drivers/gpu/drm/i915/i915_params.c +++ b/drivers/gpu/drm/i915/i915_params.c @@ -171,6 +171,18 @@ i915_param_named(guc_log_level, int, 0400, "GuC firmware logging level. Requires GuC to be loaded. " "(-1=auto [default], 0=disable, 1..4=enable with verbosity min..max)");
+i915_param_named(guc_log_size_crash, int, 0400, + "GuC firmware logging buffer size for crash dumps (in MB)" + "(-1=auto [default], NB: max = 4, other restrictions apply)"); + +i915_param_named(guc_log_size_debug, int, 0400, + "GuC firmware logging buffer size for debug logs (in MB)" + "(-1=auto [default], NB: max = 16, other restrictions apply)"); + +i915_param_named(guc_log_size_capture, int, 0400, + "GuC error capture register dump buffer size (in MB)" + "(-1=auto [default], NB: max = 4, other restrictions apply)"); + i915_param_named_unsafe(guc_firmware_path, charp, 0400, "GuC firmware path to use instead of the default one");
diff --git a/drivers/gpu/drm/i915/i915_params.h b/drivers/gpu/drm/i915/i915_params.h index 2733cb6cfe09..f684d1ab8707 100644 --- a/drivers/gpu/drm/i915/i915_params.h +++ b/drivers/gpu/drm/i915/i915_params.h @@ -61,6 +61,9 @@ struct drm_printer; param(int, invert_brightness, 0, 0600) \ param(int, enable_guc, -1, 0400) \ param(int, guc_log_level, -1, 0400) \ + param(int, guc_log_size_crash, -1, 0400) \ + param(int, guc_log_size_debug, -1, 0400) \ + param(int, guc_log_size_capture, -1, 0400) \ param(char *, guc_firmware_path, NULL, 0400) \ param(char *, huc_firmware_path, NULL, 0400) \ param(char *, dmc_firmware_path, NULL, 0400) \