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authorJon Medhurst <tixy@linaro.org>2013-10-10 16:48:56 +0100
committerJon Medhurst <tixy@linaro.org>2013-10-11 12:43:21 +0100
commitd369859ea66a29a79162f622a3816c4eb9024940 (patch)
tree1042c4c9f4b0e075267712fd2ee97a400c868840 /drivers/gator/gator_events_mali_4xx.c
parentaaf37a3203b5ad30714cde34f4a6b40c3195eebf (diff)
downloadlinaro-lsk-d369859ea66a29a79162f622a3816c4eb9024940.tar.gz
gator: Version 5.16
Signed-off-by: Jon Medhurst <tixy@linaro.org>
Diffstat (limited to 'drivers/gator/gator_events_mali_4xx.c')
-rw-r--r--drivers/gator/gator_events_mali_4xx.c751
1 files changed, 751 insertions, 0 deletions
diff --git a/drivers/gator/gator_events_mali_4xx.c b/drivers/gator/gator_events_mali_4xx.c
new file mode 100644
index 00000000000..dd275f70b70
--- /dev/null
+++ b/drivers/gator/gator_events_mali_4xx.c
@@ -0,0 +1,751 @@
+/**
+ * Copyright (C) ARM Limited 2010-2013. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include "gator.h"
+
+#include <linux/module.h>
+#include <linux/time.h>
+#include <linux/math64.h>
+
+#include "linux/mali_linux_trace.h"
+
+#include "gator_events_mali_common.h"
+#include "gator_events_mali_4xx.h"
+
+/*
+ * There are (currently) four different variants of the comms between gator and Mali:
+ * 1 (deprecated): No software counter support
+ * 2 (deprecated): Tracepoint called for each separate s/w counter value as it appears
+ * 3 (default): Single tracepoint for all s/w counters in a bundle.
+ * Interface style 3 is the default if no other is specified. 1 and 2 will be eliminated when
+ * existing Mali DDKs are upgraded.
+ * 4. As above, but for the Utgard (Mali-450) driver.
+ */
+
+#if !defined(GATOR_MALI_INTERFACE_STYLE)
+#define GATOR_MALI_INTERFACE_STYLE (3)
+#endif
+
+#if GATOR_MALI_INTERFACE_STYLE < 4
+#include "mali/mali_mjollnir_profiling_gator_api.h"
+#else
+#include "mali/mali_utgard_profiling_gator_api.h"
+#endif
+
+/*
+ * Check that the MALI_SUPPORT define is set to one of the allowable device codes.
+ */
+#if (MALI_SUPPORT != MALI_4xx)
+#error MALI_SUPPORT set to an invalid device code: expecting MALI_4xx
+#endif
+
+/* gatorfs variables for counter enable state,
+ * the event the counter should count and the
+ * 'key' (a unique id set by gatord and returned
+ * by gator.ko)
+ */
+static unsigned long counter_enabled[NUMBER_OF_EVENTS];
+static unsigned long counter_event[NUMBER_OF_EVENTS];
+static unsigned long counter_key[NUMBER_OF_EVENTS];
+
+/* The data we have recorded */
+static u32 counter_data[NUMBER_OF_EVENTS];
+/* The address to sample (or 0 if samples are sent to us) */
+static u32 *counter_address[NUMBER_OF_EVENTS];
+
+/* An array used to return the data we recorded
+ * as key,value pairs hence the *2
+ */
+static unsigned long counter_dump[NUMBER_OF_EVENTS * 2];
+static unsigned long counter_prev[NUMBER_OF_EVENTS];
+
+/* Note whether tracepoints have been registered */
+static int trace_registered;
+
+/*
+ * These numbers define the actual numbers of each block type that exist in the system. Initially
+ * these are set to the maxima defined above; if the driver is capable of being queried (newer
+ * drivers only) then the values may be revised.
+ */
+static unsigned int n_vp_cores = MAX_NUM_VP_CORES;
+static unsigned int n_l2_cores = MAX_NUM_L2_CACHE_CORES;
+static unsigned int n_fp_cores = MAX_NUM_FP_CORES;
+
+/**
+ * Calculate the difference and handle the overflow.
+ */
+static u32 get_difference(u32 start, u32 end)
+{
+ if (start - end >= 0) {
+ return start - end;
+ }
+
+ // Mali counters are unsigned 32 bit values that wrap.
+ return (4294967295u - end) + start;
+}
+
+/**
+ * Returns non-zero if the given counter ID is an activity counter.
+ */
+static inline int is_activity_counter(unsigned int event_id)
+{
+ return (event_id >= FIRST_ACTIVITY_EVENT &&
+ event_id <= LAST_ACTIVITY_EVENT);
+}
+
+/**
+ * Returns non-zero if the given counter ID is a hardware counter.
+ */
+static inline int is_hw_counter(unsigned int event_id)
+{
+ return (event_id >= FIRST_HW_COUNTER && event_id <= LAST_HW_COUNTER);
+}
+
+/*
+ * These are provided for utgard compatibility.
+ */
+typedef void _mali_profiling_get_mali_version_type(struct _mali_profiling_mali_version *values);
+typedef u32 _mali_profiling_get_l2_counters_type(_mali_profiling_l2_counter_values *values);
+
+#if GATOR_MALI_INTERFACE_STYLE == 2
+/**
+ * Returns non-zero if the given counter ID is a software counter.
+ */
+static inline int is_sw_counter(unsigned int event_id)
+{
+ return (event_id >= FIRST_SW_COUNTER && event_id <= LAST_SW_COUNTER);
+}
+#endif
+
+#if GATOR_MALI_INTERFACE_STYLE == 2
+/*
+ * The Mali DDK uses s64 types to contain software counter values, but gator
+ * can only use a maximum of 32 bits. This function scales a software counter
+ * to an appropriate range.
+ */
+static u32 scale_sw_counter_value(unsigned int event_id, signed long long value)
+{
+ u32 scaled_value;
+
+ switch (event_id) {
+ case COUNTER_GLES_UPLOAD_TEXTURE_TIME:
+ case COUNTER_GLES_UPLOAD_VBO_TIME:
+ scaled_value = (u32)div_s64(value, 1000000);
+ break;
+ default:
+ scaled_value = (u32)value;
+ break;
+ }
+
+ return scaled_value;
+}
+#endif
+
+/* Probe for continuously sampled counter */
+#if 0 //WE_DONT_CURRENTLY_USE_THIS_SO_SUPPRESS_WARNING
+GATOR_DEFINE_PROBE(mali_sample_address, TP_PROTO(unsigned int event_id, u32 *addr))
+{
+ /* Turning on too many pr_debug statements in frequently called functions
+ * can cause stability and/or performance problems
+ */
+ //pr_debug("gator: mali_sample_address %d %d\n", event_id, addr);
+ if (event_id >= ACTIVITY_VP && event_id <= COUNTER_FP3_C1) {
+ counter_address[event_id] = addr;
+ }
+}
+#endif
+
+/* Probe for hardware counter events */
+GATOR_DEFINE_PROBE(mali_hw_counter, TP_PROTO(unsigned int event_id, unsigned int value))
+{
+ /* Turning on too many pr_debug statements in frequently called functions
+ * can cause stability and/or performance problems
+ */
+ //pr_debug("gator: mali_hw_counter %d %d\n", event_id, value);
+ if (is_hw_counter(event_id)) {
+ counter_data[event_id] = value;
+ }
+}
+
+#if GATOR_MALI_INTERFACE_STYLE == 2
+GATOR_DEFINE_PROBE(mali_sw_counter, TP_PROTO(unsigned int event_id, signed long long value))
+{
+ if (is_sw_counter(event_id)) {
+ counter_data[event_id] = scale_sw_counter_value(event_id, value);
+ }
+}
+#endif /* GATOR_MALI_INTERFACE_STYLE == 2 */
+
+#if GATOR_MALI_INTERFACE_STYLE >= 3
+GATOR_DEFINE_PROBE(mali_sw_counters, TP_PROTO(pid_t pid, pid_t tid, void *surface_id, unsigned int *counters))
+{
+ u32 i;
+
+ /* Copy over the values for those counters which are enabled. */
+ for (i = FIRST_SW_COUNTER; i <= LAST_SW_COUNTER; i++) {
+ if (counter_enabled[i]) {
+ counter_data[i] = (u32)(counters[i - FIRST_SW_COUNTER]);
+ }
+ }
+}
+#endif /* GATOR_MALI_INTERFACE_STYLE >= 3 */
+
+/**
+ * Create a single filesystem entry for a specified event.
+ * @param sb the superblock
+ * @param root Filesystem root
+ * @param name The name of the entry to create
+ * @param event The ID of the event
+ * @param create_event_item boolean indicating whether to create an 'event' filesystem entry. True to create.
+ *
+ * @return 0 if ok, non-zero if the create failed.
+ */
+static int create_fs_entry(struct super_block *sb, struct dentry *root, const char *name, int event, int create_event_item)
+{
+ struct dentry *dir;
+
+ dir = gatorfs_mkdir(sb, root, name);
+
+ if (!dir) {
+ return -1;
+ }
+
+ if (create_event_item) {
+ gatorfs_create_ulong(sb, dir, "event", &counter_event[event]);
+ }
+
+ gatorfs_create_ulong(sb, dir, "enabled", &counter_enabled[event]);
+ gatorfs_create_ro_ulong(sb, dir, "key", &counter_key[event]);
+
+ return 0;
+}
+
+#if GATOR_MALI_INTERFACE_STYLE > 3
+/*
+ * Read the version info structure if available
+ */
+static void initialise_version_info(void)
+{
+ _mali_profiling_get_mali_version_type *mali_profiling_get_mali_version_symbol;
+
+ mali_profiling_get_mali_version_symbol = symbol_get(_mali_profiling_get_mali_version);
+
+ if (mali_profiling_get_mali_version_symbol) {
+ struct _mali_profiling_mali_version version_info;
+
+ pr_debug("gator: mali online _mali_profiling_get_mali_version symbol @ %p\n",
+ mali_profiling_get_mali_version_symbol);
+
+ /*
+ * Revise the number of each different core type using information derived from the DDK.
+ */
+ mali_profiling_get_mali_version_symbol(&version_info);
+
+ n_fp_cores = version_info.num_of_fp_cores;
+ n_vp_cores = version_info.num_of_vp_cores;
+ n_l2_cores = version_info.num_of_l2_cores;
+
+ /* Release the function - we're done with it. */
+ symbol_put(_mali_profiling_get_mali_version);
+ } else {
+ printk("gator: mali online _mali_profiling_get_mali_version symbol not found\n");
+ }
+}
+#endif
+
+static int create_files(struct super_block *sb, struct dentry *root)
+{
+ int event;
+ const char *mali_name = gator_mali_get_mali_name();
+
+ char buf[40];
+ int core_id;
+ int counter_number;
+
+ pr_debug("gator: Initialising counters with style = %d\n", GATOR_MALI_INTERFACE_STYLE);
+
+#if GATOR_MALI_INTERFACE_STYLE > 3
+ /*
+ * Initialise first: this sets up the number of cores available (on compatible DDK versions).
+ * Ideally this would not need guarding but other parts of the code depend on the interface style being set
+ * correctly; if it is not then the system can enter an inconsistent state.
+ */
+ initialise_version_info();
+#endif
+
+ /* Vertex processor counters */
+ for (core_id = 0; core_id < n_vp_cores; core_id++) {
+ int activity_counter_id = ACTIVITY_VP_0;
+ snprintf(buf, sizeof buf, "ARM_%s_VP_%d_active", mali_name, core_id);
+ if (create_fs_entry(sb, root, buf, activity_counter_id, 0) != 0) {
+ return -1;
+ }
+
+ for (counter_number = 0; counter_number < 2; counter_number++) {
+ int counter_id = COUNTER_VP_0_C0 + (2 * core_id) + counter_number;
+
+ snprintf(buf, sizeof buf, "ARM_%s_VP_%d_cnt%d", mali_name, core_id, counter_number);
+ if (create_fs_entry(sb, root, buf, counter_id, 1) != 0) {
+ return -1;
+ }
+ }
+ }
+
+ /* Fragment processors' counters */
+ for (core_id = 0; core_id < n_fp_cores; core_id++) {
+ int activity_counter_id = ACTIVITY_FP_0 + core_id;
+
+ snprintf(buf, sizeof buf, "ARM_%s_FP_%d_active", mali_name, core_id);
+ if (create_fs_entry(sb, root, buf, activity_counter_id, 0) != 0) {
+ return -1;
+ }
+
+ for (counter_number = 0; counter_number < 2; counter_number++) {
+ int counter_id = COUNTER_FP_0_C0 + (2 * core_id) + counter_number;
+
+ snprintf(buf, sizeof buf, "ARM_%s_FP_%d_cnt%d", mali_name, core_id, counter_number);
+ if (create_fs_entry(sb, root, buf, counter_id, 1) != 0) {
+ return -1;
+ }
+ }
+ }
+
+ /* L2 Cache counters */
+ for (core_id = 0; core_id < n_l2_cores; core_id++) {
+ for (counter_number = 0; counter_number < 2; counter_number++) {
+ int counter_id = COUNTER_L2_0_C0 + (2 * core_id) + counter_number;
+
+ snprintf(buf, sizeof buf, "ARM_%s_L2_%d_cnt%d", mali_name, core_id, counter_number);
+ if (create_fs_entry(sb, root, buf, counter_id, 1) != 0) {
+ return -1;
+ }
+ }
+ }
+
+ /* Now set up the software counter entries */
+ for (event = FIRST_SW_COUNTER; event <= LAST_SW_COUNTER; event++) {
+ snprintf(buf, sizeof(buf), "ARM_%s_SW_%d", mali_name, event - FIRST_SW_COUNTER);
+
+ if (create_fs_entry(sb, root, buf, event, 0) != 0) {
+ return -1;
+ }
+ }
+
+ /* Now set up the special counter entries */
+ snprintf(buf, sizeof(buf), "ARM_%s_Filmstrip_cnt0", mali_name);
+ if (create_fs_entry(sb, root, buf, COUNTER_FILMSTRIP, 1) != 0) {
+ return -1;
+ }
+
+#ifdef DVFS_REPORTED_BY_DDK
+ snprintf(buf, sizeof(buf), "ARM_%s_Frequency", mali_name);
+ if (create_fs_entry(sb, root, buf, COUNTER_FREQUENCY, 1) != 0) {
+ return -1;
+ }
+
+ snprintf(buf, sizeof(buf), "ARM_%s_Voltage", mali_name);
+ if (create_fs_entry(sb, root, buf, COUNTER_VOLTAGE, 1) != 0) {
+ return -1;
+ }
+#endif
+
+ return 0;
+}
+
+/*
+ * Local store for the get_counters entry point into the DDK.
+ * This is stored here since it is used very regularly.
+ */
+static mali_profiling_get_counters_type *mali_get_counters = NULL;
+static _mali_profiling_get_l2_counters_type *mali_get_l2_counters = NULL;
+
+/*
+ * Examine list of counters between two index limits and determine if any one is enabled.
+ * Returns 1 if any counter is enabled, 0 if none is.
+ */
+static int is_any_counter_enabled(unsigned int first_counter, unsigned int last_counter)
+{
+ unsigned int i;
+
+ for (i = first_counter; i <= last_counter; i++) {
+ if (counter_enabled[i]) {
+ return 1; /* At least one counter is enabled */
+ }
+ }
+
+ return 0; /* No s/w counters enabled */
+}
+
+static void init_counters(unsigned int from_counter, unsigned int to_counter)
+{
+ unsigned int counter_id;
+
+ /* If a Mali driver is present and exporting the appropriate symbol
+ * then we can request the HW counters (of which there are only 2)
+ * be configured to count the desired events
+ */
+ mali_profiling_set_event_type *mali_set_hw_event;
+
+ mali_set_hw_event = symbol_get(_mali_profiling_set_event);
+
+ if (mali_set_hw_event) {
+ pr_debug("gator: mali online _mali_profiling_set_event symbol @ %p\n", mali_set_hw_event);
+
+ for (counter_id = from_counter; counter_id <= to_counter; counter_id++) {
+ if (counter_enabled[counter_id]) {
+ mali_set_hw_event(counter_id, counter_event[counter_id]);
+ } else {
+ mali_set_hw_event(counter_id, 0xFFFFFFFF);
+ }
+ }
+
+ symbol_put(_mali_profiling_set_event);
+ } else {
+ printk("gator: mali online _mali_profiling_set_event symbol not found\n");
+ }
+}
+
+static void mali_counter_initialize(void)
+{
+ int i;
+ int core_id;
+
+ mali_osk_fb_control_set_type *mali_set_fb_event;
+ mali_profiling_control_type *mali_control;
+
+ init_counters(COUNTER_L2_0_C0, COUNTER_L2_0_C0 + (2 * n_l2_cores) - 1);
+ init_counters(COUNTER_VP_0_C0, COUNTER_VP_0_C0 + (2 * n_vp_cores) - 1);
+ init_counters(COUNTER_FP_0_C0, COUNTER_FP_0_C0 + (2 * n_fp_cores) - 1);
+
+ mali_set_fb_event = symbol_get(_mali_osk_fb_control_set);
+
+ if (mali_set_fb_event) {
+ pr_debug("gator: mali online _mali_osk_fb_control_set symbol @ %p\n", mali_set_fb_event);
+
+ mali_set_fb_event(0, (counter_enabled[COUNTER_FILMSTRIP] ? 1 : 0));
+
+ symbol_put(_mali_osk_fb_control_set);
+ } else {
+ printk("gator: mali online _mali_osk_fb_control_set symbol not found\n");
+ }
+
+ /* Generic control interface for Mali DDK. */
+ mali_control = symbol_get(_mali_profiling_control);
+ if (mali_control) {
+ /* The event attribute in the XML file keeps the actual frame rate. */
+ unsigned int rate = counter_event[COUNTER_FILMSTRIP] & 0xff;
+ unsigned int resize_factor = (counter_event[COUNTER_FILMSTRIP] >> 8) & 0xff;
+
+ pr_debug("gator: mali online _mali_profiling_control symbol @ %p\n", mali_control);
+
+ mali_control(SW_COUNTER_ENABLE, (is_any_counter_enabled(FIRST_SW_COUNTER, LAST_SW_COUNTER) ? 1 : 0));
+ mali_control(FBDUMP_CONTROL_ENABLE, (counter_enabled[COUNTER_FILMSTRIP] ? 1 : 0));
+ mali_control(FBDUMP_CONTROL_RATE, rate);
+ mali_control(FBDUMP_CONTROL_RESIZE_FACTOR, resize_factor);
+
+ pr_debug("gator: sent mali_control enabled=%d, rate=%d\n", (counter_enabled[COUNTER_FILMSTRIP] ? 1 : 0), rate);
+
+ symbol_put(_mali_profiling_control);
+ } else {
+ printk("gator: mali online _mali_profiling_control symbol not found\n");
+ }
+
+ mali_get_counters = symbol_get(_mali_profiling_get_counters);
+ if (mali_get_counters) {
+ pr_debug("gator: mali online _mali_profiling_get_counters symbol @ %p\n", mali_get_counters);
+
+ } else {
+ pr_debug("gator WARNING: mali _mali_profiling_get_counters symbol not defined");
+ }
+
+ mali_get_l2_counters = symbol_get(_mali_profiling_get_l2_counters);
+ if (mali_get_l2_counters) {
+ pr_debug("gator: mali online _mali_profiling_get_l2_counters symbol @ %p\n", mali_get_l2_counters);
+
+ } else {
+ pr_debug("gator WARNING: mali _mali_profiling_get_l2_counters symbol not defined");
+ }
+
+ if (!mali_get_counters && !mali_get_l2_counters) {
+ pr_debug("gator: WARNING: no L2 counters available");
+ n_l2_cores = 0;
+ }
+
+ for (core_id = 0; core_id < n_l2_cores; core_id++) {
+ int counter_id = COUNTER_L2_0_C0 + (2 * core_id);
+ counter_prev[counter_id] = 0;
+ counter_prev[counter_id + 1] = 0;
+ }
+
+ /* Clear counters in the start */
+ for (i = 0; i < NUMBER_OF_EVENTS; i++) {
+ counter_data[i] = 0;
+ }
+}
+
+static void mali_counter_deinitialize(void)
+{
+ mali_profiling_set_event_type *mali_set_hw_event;
+ mali_osk_fb_control_set_type *mali_set_fb_event;
+ mali_profiling_control_type *mali_control;
+
+ mali_set_hw_event = symbol_get(_mali_profiling_set_event);
+
+ if (mali_set_hw_event) {
+ int i;
+
+ pr_debug("gator: mali offline _mali_profiling_set_event symbol @ %p\n", mali_set_hw_event);
+ for (i = FIRST_HW_COUNTER; i <= LAST_HW_COUNTER; i++) {
+ mali_set_hw_event(i, 0xFFFFFFFF);
+ }
+
+ symbol_put(_mali_profiling_set_event);
+ } else {
+ printk("gator: mali offline _mali_profiling_set_event symbol not found\n");
+ }
+
+ mali_set_fb_event = symbol_get(_mali_osk_fb_control_set);
+
+ if (mali_set_fb_event) {
+ pr_debug("gator: mali offline _mali_osk_fb_control_set symbol @ %p\n", mali_set_fb_event);
+
+ mali_set_fb_event(0, 0);
+
+ symbol_put(_mali_osk_fb_control_set);
+ } else {
+ printk("gator: mali offline _mali_osk_fb_control_set symbol not found\n");
+ }
+
+ /* Generic control interface for Mali DDK. */
+ mali_control = symbol_get(_mali_profiling_control);
+
+ if (mali_control) {
+ pr_debug("gator: mali offline _mali_profiling_control symbol @ %p\n", mali_set_fb_event);
+
+ /* Reset the DDK state - disable counter collection */
+ mali_control(SW_COUNTER_ENABLE, 0);
+
+ mali_control(FBDUMP_CONTROL_ENABLE, 0);
+
+ symbol_put(_mali_profiling_control);
+ } else {
+ printk("gator: mali offline _mali_profiling_control symbol not found\n");
+ }
+
+ if (mali_get_counters) {
+ symbol_put(_mali_profiling_get_counters);
+ }
+
+ if (mali_get_l2_counters) {
+ symbol_put(_mali_profiling_get_l2_counters);
+ }
+}
+
+static int start(void)
+{
+ // register tracepoints
+ if (GATOR_REGISTER_TRACE(mali_hw_counter)) {
+ printk("gator: mali_hw_counter tracepoint failed to activate\n");
+ return -1;
+ }
+
+#if GATOR_MALI_INTERFACE_STYLE == 1
+ /* None. */
+#elif GATOR_MALI_INTERFACE_STYLE == 2
+ /* For patched Mali driver. */
+ if (GATOR_REGISTER_TRACE(mali_sw_counter)) {
+ printk("gator: mali_sw_counter tracepoint failed to activate\n");
+ return -1;
+ }
+#elif GATOR_MALI_INTERFACE_STYLE >= 3
+ /* For Mali drivers with built-in support. */
+ if (GATOR_REGISTER_TRACE(mali_sw_counters)) {
+ printk("gator: mali_sw_counters tracepoint failed to activate\n");
+ return -1;
+ }
+#else
+#error Unknown GATOR_MALI_INTERFACE_STYLE option.
+#endif
+
+ trace_registered = 1;
+
+ mali_counter_initialize();
+ return 0;
+}
+
+static void stop(void)
+{
+ unsigned int cnt;
+
+ pr_debug("gator: mali stop\n");
+
+ if (trace_registered) {
+ GATOR_UNREGISTER_TRACE(mali_hw_counter);
+
+#if GATOR_MALI_INTERFACE_STYLE == 1
+ /* None. */
+#elif GATOR_MALI_INTERFACE_STYLE == 2
+ /* For patched Mali driver. */
+ GATOR_UNREGISTER_TRACE(mali_sw_counter);
+#elif GATOR_MALI_INTERFACE_STYLE >= 3
+ /* For Mali drivers with built-in support. */
+ GATOR_UNREGISTER_TRACE(mali_sw_counters);
+#else
+#error Unknown GATOR_MALI_INTERFACE_STYLE option.
+#endif
+
+ pr_debug("gator: mali timeline tracepoint deactivated\n");
+
+ trace_registered = 0;
+ }
+
+ for (cnt = 0; cnt < NUMBER_OF_EVENTS; cnt++) {
+ counter_enabled[cnt] = 0;
+ counter_event[cnt] = 0;
+ counter_address[cnt] = NULL;
+ }
+
+ mali_counter_deinitialize();
+}
+
+static void dump_counters(unsigned int from_counter, unsigned int to_counter, unsigned int *len)
+{
+ unsigned int counter_id;
+
+ for (counter_id = from_counter; counter_id <= to_counter; counter_id++) {
+ if (counter_enabled[counter_id]) {
+ counter_dump[(*len)++] = counter_key[counter_id];
+ counter_dump[(*len)++] = counter_data[counter_id];
+
+ counter_data[counter_id] = 0;
+ }
+ }
+}
+
+static int read(int **buffer)
+{
+ int len = 0;
+
+ if (!on_primary_core())
+ return 0;
+
+ // Read the L2 C0 and C1 here.
+ if (n_l2_cores > 0 && is_any_counter_enabled(COUNTER_L2_0_C0, COUNTER_L2_0_C0 + (2 * n_l2_cores))) {
+ unsigned int unavailable_l2_caches = 0;
+ _mali_profiling_l2_counter_values cache_values;
+ unsigned int cache_id;
+ struct _mali_profiling_core_counters *per_core;
+
+ /* Poke the driver to get the counter values - older style; only one L2 cache */
+ if (mali_get_l2_counters) {
+ unavailable_l2_caches = mali_get_l2_counters(&cache_values);
+ } else if (mali_get_counters) {
+ per_core = &cache_values.cores[0];
+ mali_get_counters(&per_core->source0, &per_core->value0, &per_core->source1, &per_core->value1);
+ } else {
+ /* This should never happen, as n_l2_caches is only set > 0 if one of the above functions is found. */
+ }
+
+ /* Fill in the two cache counter values for each cache block. */
+ for (cache_id = 0; cache_id < n_l2_cores; cache_id++) {
+ unsigned int counter_id_0 = COUNTER_L2_0_C0 + (2 * cache_id);
+ unsigned int counter_id_1 = counter_id_0 + 1;
+
+ if ((1 << cache_id) & unavailable_l2_caches) {
+ continue; /* This cache is unavailable (powered-off, possibly). */
+ }
+
+ per_core = &cache_values.cores[cache_id];
+
+ if (counter_enabled[counter_id_0]) {
+ // Calculate and save src0's counter val0
+ counter_dump[len++] = counter_key[counter_id_0];
+ counter_dump[len++] = get_difference(per_core->value0, counter_prev[counter_id_0]);
+ }
+
+ if (counter_enabled[counter_id_1]) {
+ // Calculate and save src1's counter val1
+ counter_dump[len++] = counter_key[counter_id_1];
+ counter_dump[len++] = get_difference(per_core->value1, counter_prev[counter_id_1]);
+ }
+
+ // Save the previous values for the counters.
+ counter_prev[counter_id_0] = per_core->value0;
+ counter_prev[counter_id_1] = per_core->value1;
+ }
+ }
+
+ /* Process other (non-timeline) counters. */
+ dump_counters(COUNTER_VP_0_C0, COUNTER_VP_0_C0 + (2 * n_vp_cores) - 1, &len);
+ dump_counters(COUNTER_FP_0_C0, COUNTER_FP_0_C0 + (2 * n_fp_cores) - 1, &len);
+
+ dump_counters(FIRST_SW_COUNTER, LAST_SW_COUNTER, &len);
+
+#ifdef DVFS_REPORTED_BY_DDK
+ {
+ int cnt;
+ /*
+ * Add in the voltage and frequency counters if enabled. Note that, since these are
+ * actually passed as events, the counter value should not be cleared.
+ */
+ cnt = COUNTER_FREQUENCY;
+ if (counter_enabled[cnt]) {
+ counter_dump[len++] = counter_key[cnt];
+ counter_dump[len++] = counter_data[cnt];
+ }
+
+ cnt = COUNTER_VOLTAGE;
+ if (counter_enabled[cnt]) {
+ counter_dump[len++] = counter_key[cnt];
+ counter_dump[len++] = counter_data[cnt];
+ }
+ }
+#endif
+
+ if (buffer) {
+ *buffer = (int *)counter_dump;
+ }
+
+ return len;
+}
+
+static struct gator_interface gator_events_mali_interface = {
+ .create_files = create_files,
+ .start = start,
+ .stop = stop,
+ .read = read,
+};
+
+extern void gator_events_mali_log_dvfs_event(unsigned int frequency_mhz, unsigned int voltage_mv)
+{
+#ifdef DVFS_REPORTED_BY_DDK
+ counter_data[COUNTER_FREQUENCY] = frequency_mhz;
+ counter_data[COUNTER_VOLTAGE] = voltage_mv;
+#endif
+}
+
+int gator_events_mali_init(void)
+{
+ unsigned int cnt;
+
+ pr_debug("gator: mali init\n");
+
+ for (cnt = 0; cnt < NUMBER_OF_EVENTS; cnt++) {
+ counter_enabled[cnt] = 0;
+ counter_event[cnt] = 0;
+ counter_key[cnt] = gator_events_get_key();
+ counter_address[cnt] = NULL;
+ counter_data[cnt] = 0;
+ }
+
+ trace_registered = 0;
+
+ return gator_events_install(&gator_events_mali_interface);
+}
+
+gator_events_init(gator_events_mali_init);