aboutsummaryrefslogtreecommitdiff
path: root/driver/gator_events_scorpion.c
diff options
context:
space:
mode:
Diffstat (limited to 'driver/gator_events_scorpion.c')
-rw-r--r--driver/gator_events_scorpion.c81
1 files changed, 43 insertions, 38 deletions
diff --git a/driver/gator_events_scorpion.c b/driver/gator_events_scorpion.c
index 2e5be8d..4921936 100644
--- a/driver/gator_events_scorpion.c
+++ b/driver/gator_events_scorpion.c
@@ -8,13 +8,13 @@
#include "gator.h"
-// gator_events_perf_pmu.c is used if perf is supported
+/* gator_events_perf_pmu.c is used if perf is supported */
#if GATOR_NO_PERF_SUPPORT
static const char *pmnc_name;
static int pmnc_counters;
-// Per-CPU PMNC: config reg
+/* Per-CPU PMNC: config reg */
#define PMNC_E (1 << 0) /* Enable all counters */
#define PMNC_P (1 << 1) /* Reset all counters */
#define PMNC_C (1 << 2) /* Cycle counter reset */
@@ -23,7 +23,7 @@ static int pmnc_counters;
#define PMNC_DP (1 << 5) /* Disable CCNT if non-invasive debug */
#define PMNC_MASK 0x3f /* Mask for writable bits */
-// ccnt reg
+/* ccnt reg */
#define CCNT_REG (1 << 31)
#define CCNT 0
@@ -243,6 +243,7 @@ static inline void scorpion_pmnc_write(u32 val)
static inline u32 scorpion_pmnc_read(void)
{
u32 val;
+
asm volatile("mrc p15, 0, %0, c9, c12, 0" : "=r" (val));
return val;
}
@@ -250,6 +251,7 @@ static inline u32 scorpion_pmnc_read(void)
static inline u32 scorpion_ccnt_read(void)
{
u32 val;
+
asm volatile("mrc p15, 0, %0, c9, c13, 0" : "=r" (val));
return val;
}
@@ -257,6 +259,7 @@ static inline u32 scorpion_ccnt_read(void)
static inline u32 scorpion_cntn_read(void)
{
u32 val;
+
asm volatile("mrc p15, 0, %0, c9, c13, 2" : "=r" (val));
return val;
}
@@ -317,6 +320,7 @@ static inline int scorpion_pmnc_select_counter(unsigned int cnt)
static u32 scorpion_read_lpm0(void)
{
u32 val;
+
asm volatile("mrc p15, 0, %0, c15, c0, 0" : "=r" (val));
return val;
}
@@ -329,6 +333,7 @@ static void scorpion_write_lpm0(u32 val)
static u32 scorpion_read_lpm1(void)
{
u32 val;
+
asm volatile("mrc p15, 1, %0, c15, c0, 0" : "=r" (val));
return val;
}
@@ -341,6 +346,7 @@ static void scorpion_write_lpm1(u32 val)
static u32 scorpion_read_lpm2(void)
{
u32 val;
+
asm volatile("mrc p15, 2, %0, c15, c0, 0" : "=r" (val));
return val;
}
@@ -353,6 +359,7 @@ static void scorpion_write_lpm2(u32 val)
static u32 scorpion_read_l2lpm(void)
{
u32 val;
+
asm volatile("mrc p15, 3, %0, c15, c2, 0" : "=r" (val));
return val;
}
@@ -365,6 +372,7 @@ static void scorpion_write_l2lpm(u32 val)
static u32 scorpion_read_vlpm(void)
{
u32 val;
+
asm volatile("mrc p10, 7, %0, c11, c0, 0" : "=r" (val));
return val;
}
@@ -375,7 +383,7 @@ static void scorpion_write_vlpm(u32 val)
}
struct scorpion_access_funcs {
- u32(*read)(void);
+ u32 (*read)(void);
void (*write)(u32);
};
@@ -420,17 +428,17 @@ static u32 scorpion_get_columnmask(u32 setval)
{
if (setval & COLMN0MASK)
return 0xffffff00;
- else if (setval & COLMN1MASK)
+ if (setval & COLMN1MASK)
return 0xffff00ff;
- else if (setval & COLMN2MASK)
+ if (setval & COLMN2MASK)
return 0xff00ffff;
- else
- return 0x80ffffff;
+ return 0x80ffffff;
}
static void scorpion_evt_setup(u32 gr, u32 setval)
{
u32 val;
+
if (gr == 4)
scorpion_pre_vlpm();
val = scorpion_get_columnmask(setval) & scor_func[gr].read();
@@ -443,6 +451,7 @@ static void scorpion_evt_setup(u32 gr, u32 setval)
static int get_scorpion_evtinfo(unsigned int evt_type, struct scorp_evt *evtinfo)
{
u32 idx;
+
if ((evt_type < 0x4c) || (evt_type >= MSM_MAX_EVT))
return 0;
idx = evt_type - 0x4c;
@@ -463,7 +472,7 @@ static inline void scorpion_pmnc_write_evtsel(unsigned int cnt, u32 val)
} else {
u32 zero = 0;
struct scorp_evt evtinfo;
- // extract evtinfo.grp and evtinfo.tevt_type_act from val
+ /* extract evtinfo.grp and evtinfo.tevt_type_act from val */
if (get_scorpion_evtinfo(val, &evtinfo) == 0)
return;
asm volatile("mcr p15, 0, %0, c9, c13, 1" : : "r" (evtinfo.evt_type_act));
@@ -505,20 +514,18 @@ static int gator_events_scorpion_create_files(struct super_block *sb, struct den
for (i = 0; i < pmnc_counters; i++) {
char buf[40];
- if (i == 0) {
- snprintf(buf, sizeof buf, "%s_ccnt", pmnc_name);
- } else {
- snprintf(buf, sizeof buf, "%s_cnt%d", pmnc_name, i - 1);
- }
+
+ if (i == 0)
+ snprintf(buf, sizeof(buf), "%s_ccnt", pmnc_name);
+ else
+ snprintf(buf, sizeof(buf), "%s_cnt%d", pmnc_name, i - 1);
dir = gatorfs_mkdir(sb, root, buf);
- if (!dir) {
+ if (!dir)
return -1;
- }
gatorfs_create_ulong(sb, dir, "enabled", &pmnc_enabled[i]);
gatorfs_create_ro_ulong(sb, dir, "key", &pmnc_key[i]);
- if (i > 0) {
+ if (i > 0)
gatorfs_create_ulong(sb, dir, "event", &pmnc_event[i]);
- }
}
return 0;
@@ -528,9 +535,8 @@ static int gator_events_scorpion_online(int **buffer, bool migrate)
{
unsigned int cnt, len = 0, cpu = smp_processor_id();
- if (scorpion_pmnc_read() & PMNC_E) {
+ if (scorpion_pmnc_read() & PMNC_E)
scorpion_pmnc_write(scorpion_pmnc_read() & ~PMNC_E);
- }
/* Initialize & Reset PMNC: C bit and P bit */
scorpion_pmnc_write(PMNC_P | PMNC_C);
@@ -541,33 +547,32 @@ static int gator_events_scorpion_online(int **buffer, bool migrate)
if (!pmnc_enabled[cnt])
continue;
- // disable counter
+ /* disable counter */
scorpion_pmnc_disable_counter(cnt);
event = pmnc_event[cnt] & 255;
- // Set event (if destined for PMNx counters), We don't need to set the event if it's a cycle count
+ /* Set event (if destined for PMNx counters), We don't need to set the event if it's a cycle count */
if (cnt != CCNT)
scorpion_pmnc_write_evtsel(cnt, event);
- // reset counter
+ /* reset counter */
scorpion_pmnc_reset_counter(cnt);
- // Enable counter, do not enable interrupt for this counter
+ /* Enable counter, do not enable interrupt for this counter */
scorpion_pmnc_enable_counter(cnt);
}
- // enable
+ /* enable */
scorpion_pmnc_write(scorpion_pmnc_read() | PMNC_E);
- // read the counters and toss the invalid data, return zero instead
+ /* read the counters and toss the invalid data, return zero instead */
for (cnt = 0; cnt < pmnc_counters; cnt++) {
if (pmnc_enabled[cnt]) {
- if (cnt == CCNT) {
+ if (cnt == CCNT)
scorpion_ccnt_read();
- } else if (scorpion_pmnc_select_counter(cnt) == cnt) {
+ else if (scorpion_pmnc_select_counter(cnt) == cnt)
scorpion_cntn_read();
- }
scorpion_pmnc_reset_counter(cnt);
per_cpu(perfCnt, cpu)[len++] = pmnc_key[cnt];
@@ -597,26 +602,25 @@ static void gator_events_scorpion_stop(void)
}
}
-static int gator_events_scorpion_read(int **buffer)
+static int gator_events_scorpion_read(int **buffer, bool sched_switch)
{
int cnt, len = 0;
int cpu = smp_processor_id();
- // a context switch may occur before the online hotplug event, thus need to check that the pmu is enabled
- if (!(scorpion_pmnc_read() & PMNC_E)) {
+ /* a context switch may occur before the online hotplug event, thus need to check that the pmu is enabled */
+ if (!(scorpion_pmnc_read() & PMNC_E))
return 0;
- }
for (cnt = 0; cnt < pmnc_counters; cnt++) {
if (pmnc_enabled[cnt]) {
int value;
- if (cnt == CCNT) {
+
+ if (cnt == CCNT)
value = scorpion_ccnt_read();
- } else if (scorpion_pmnc_select_counter(cnt) == cnt) {
+ else if (scorpion_pmnc_select_counter(cnt) == cnt)
value = scorpion_cntn_read();
- } else {
+ else
value = 0;
- }
scorpion_pmnc_reset_counter(cnt);
per_cpu(perfCnt, cpu)[len++] = pmnc_key[cnt];
@@ -655,7 +659,8 @@ int gator_events_scorpion_init(void)
return -1;
}
- pmnc_counters++; // CNT[n] + CCNT
+ /* CNT[n] + CCNT */
+ pmnc_counters++;
for (cnt = CCNT; cnt < CNTMAX; cnt++) {
pmnc_enabled[cnt] = 0;
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-16 06:49:40 +0000