msm: smd: Add interrupt debugging support
Add counters for tracking interrupts. This helps for
debugging interrupt issues and provides a centralized
place to verify that SMD interrupts are working
correctly.
This can be used as an additional verification
tool when moving interrupt configuration into
platform data and device tree.
Change-Id: Ie3936abc59f0d9a470e96a2f5da4b0390d7f7de1
Signed-off-by: Eric Holmberg <eholmber@codeaurora.org>
diff --git a/arch/arm/mach-msm/smd.c b/arch/arm/mach-msm/smd.c
index 37c8920..f9917d3 100644
--- a/arch/arm/mach-msm/smd.c
+++ b/arch/arm/mach-msm/smd.c
@@ -145,6 +145,7 @@
.smsm.irq_handler = smsm_wcnss_irq_handler,
},
};
+struct interrupt_stat interrupt_stats[NUM_SMD_SUBSYSTEMS];
#define SMSM_STATE_ADDR(entry) (smsm_info.state + entry)
#define SMSM_INTR_MASK_ADDR(entry, host) (smsm_info.intr_mask + \
@@ -377,33 +378,42 @@
{
static const struct interrupt_config_item *intr
= &private_intr_config[SMD_MODEM].smd;
- if (intr->out_base)
+ if (intr->out_base) {
+ ++interrupt_stats[SMD_MODEM].smd_out_config_count;
smd_write_intr(intr->out_bit_pos,
intr->out_base + intr->out_offset);
- else
+ } else {
+ ++interrupt_stats[SMD_MODEM].smd_out_hardcode_count;
MSM_TRIG_A2M_SMD_INT;
+ }
}
static inline void notify_dsp_smd(void)
{
static const struct interrupt_config_item *intr
= &private_intr_config[SMD_Q6].smd;
- if (intr->out_base)
+ if (intr->out_base) {
+ ++interrupt_stats[SMD_Q6].smd_out_config_count;
smd_write_intr(intr->out_bit_pos,
intr->out_base + intr->out_offset);
- else
+ } else {
+ ++interrupt_stats[SMD_Q6].smd_out_hardcode_count;
MSM_TRIG_A2Q6_SMD_INT;
+ }
}
static inline void notify_dsps_smd(void)
{
static const struct interrupt_config_item *intr
= &private_intr_config[SMD_DSPS].smd;
- if (intr->out_base)
+ if (intr->out_base) {
+ ++interrupt_stats[SMD_DSPS].smd_out_config_count;
smd_write_intr(intr->out_bit_pos,
intr->out_base + intr->out_offset);
- else
+ } else {
+ ++interrupt_stats[SMD_DSPS].smd_out_hardcode_count;
MSM_TRIG_A2DSPS_SMD_INT;
+ }
}
static inline void notify_wcnss_smd(void)
@@ -412,44 +422,56 @@
= &private_intr_config[SMD_WCNSS].smd;
wakeup_v1_riva();
- if (intr->out_base)
+ if (intr->out_base) {
+ ++interrupt_stats[SMD_WCNSS].smd_out_config_count;
smd_write_intr(intr->out_bit_pos,
intr->out_base + intr->out_offset);
- else
+ } else {
+ ++interrupt_stats[SMD_WCNSS].smd_out_hardcode_count;
MSM_TRIG_A2WCNSS_SMD_INT;
+ }
}
static inline void notify_modem_smsm(void)
{
static const struct interrupt_config_item *intr
= &private_intr_config[SMD_MODEM].smsm;
- if (intr->out_base)
+ if (intr->out_base) {
+ ++interrupt_stats[SMD_MODEM].smsm_out_config_count;
smd_write_intr(intr->out_bit_pos,
intr->out_base + intr->out_offset);
- else
+ } else {
+ ++interrupt_stats[SMD_MODEM].smsm_out_hardcode_count;
MSM_TRIG_A2M_SMSM_INT;
+ }
}
static inline void notify_dsp_smsm(void)
{
static const struct interrupt_config_item *intr
= &private_intr_config[SMD_Q6].smsm;
- if (intr->out_base)
+ if (intr->out_base) {
+ ++interrupt_stats[SMD_Q6].smsm_out_config_count;
smd_write_intr(intr->out_bit_pos,
intr->out_base + intr->out_offset);
- else
+ } else {
+ ++interrupt_stats[SMD_Q6].smsm_out_hardcode_count;
MSM_TRIG_A2Q6_SMSM_INT;
+ }
}
static inline void notify_dsps_smsm(void)
{
static const struct interrupt_config_item *intr
= &private_intr_config[SMD_DSPS].smsm;
- if (intr->out_base)
+ if (intr->out_base) {
+ ++interrupt_stats[SMD_DSPS].smsm_out_config_count;
smd_write_intr(intr->out_bit_pos,
intr->out_base + intr->out_offset);
- else
+ } else {
+ ++interrupt_stats[SMD_DSPS].smsm_out_hardcode_count;
MSM_TRIG_A2DSPS_SMSM_INT;
+ }
}
static inline void notify_wcnss_smsm(void)
@@ -458,11 +480,14 @@
= &private_intr_config[SMD_WCNSS].smsm;
wakeup_v1_riva();
- if (intr->out_base)
+ if (intr->out_base) {
+ ++interrupt_stats[SMD_WCNSS].smsm_out_config_count;
smd_write_intr(intr->out_bit_pos,
intr->out_base + intr->out_offset);
- else
+ } else {
+ ++interrupt_stats[SMD_WCNSS].smsm_out_hardcode_count;
MSM_TRIG_A2WCNSS_SMSM_INT;
+ }
}
static void notify_other_smsm(uint32_t smsm_entry, uint32_t notify_mask)
@@ -769,6 +794,30 @@
}
EXPORT_SYMBOL(smd_edge_to_subsystem);
+/*
+ * Returns a pointer to the subsystem name given the
+ * remote processor ID.
+ *
+ * @pid Remote processor ID
+ * @returns Pointer to subsystem name or NULL if not found
+ */
+const char *smd_pid_to_subsystem(uint32_t pid)
+{
+ const char *subsys = NULL;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(edge_to_pids); ++i) {
+ if (pid == edge_to_pids[i].remote_pid &&
+ edge_to_pids[i].subsys_name[0] != 0x0
+ ) {
+ subsys = edge_to_pids[i].subsys_name;
+ break;
+ }
+ }
+
+ return subsys;
+}
+EXPORT_SYMBOL(smd_pid_to_subsystem);
static void smd_reset_edge(struct smd_half_channel *ch, unsigned new_state)
{
@@ -1185,6 +1234,7 @@
static irqreturn_t smd_modem_irq_handler(int irq, void *data)
{
SMx_POWER_INFO("SMD Int Modem->Apps\n");
+ ++interrupt_stats[SMD_MODEM].smd_in_count;
handle_smd_irq(&smd_ch_list_modem, notify_modem_smd);
handle_smd_irq_closing_list();
return IRQ_HANDLED;
@@ -1193,6 +1243,7 @@
static irqreturn_t smd_dsp_irq_handler(int irq, void *data)
{
SMx_POWER_INFO("SMD Int LPASS->Apps\n");
+ ++interrupt_stats[SMD_Q6].smd_in_count;
handle_smd_irq(&smd_ch_list_dsp, notify_dsp_smd);
handle_smd_irq_closing_list();
return IRQ_HANDLED;
@@ -1201,6 +1252,7 @@
static irqreturn_t smd_dsps_irq_handler(int irq, void *data)
{
SMx_POWER_INFO("SMD Int DSPS->Apps\n");
+ ++interrupt_stats[SMD_DSPS].smd_in_count;
handle_smd_irq(&smd_ch_list_dsps, notify_dsps_smd);
handle_smd_irq_closing_list();
return IRQ_HANDLED;
@@ -1209,6 +1261,7 @@
static irqreturn_t smd_wcnss_irq_handler(int irq, void *data)
{
SMx_POWER_INFO("SMD Int WCNSS->Apps\n");
+ ++interrupt_stats[SMD_WCNSS].smd_in_count;
handle_smd_irq(&smd_ch_list_wcnss, notify_wcnss_smd);
handle_smd_irq_closing_list();
return IRQ_HANDLED;
@@ -2351,24 +2404,28 @@
static irqreturn_t smsm_modem_irq_handler(int irq, void *data)
{
SMx_POWER_INFO("SMSM Int Modem->Apps\n");
+ ++interrupt_stats[SMD_MODEM].smsm_in_count;
return smsm_irq_handler(irq, data);
}
static irqreturn_t smsm_dsp_irq_handler(int irq, void *data)
{
SMx_POWER_INFO("SMSM Int LPASS->Apps\n");
+ ++interrupt_stats[SMD_Q6].smsm_in_count;
return smsm_irq_handler(irq, data);
}
static irqreturn_t smsm_dsps_irq_handler(int irq, void *data)
{
SMx_POWER_INFO("SMSM Int DSPS->Apps\n");
+ ++interrupt_stats[SMD_DSPS].smsm_in_count;
return smsm_irq_handler(irq, data);
}
static irqreturn_t smsm_wcnss_irq_handler(int irq, void *data)
{
SMx_POWER_INFO("SMSM Int WCNSS->Apps\n");
+ ++interrupt_stats[SMD_WCNSS].smsm_in_count;
return smsm_irq_handler(irq, data);
}