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soc: qcom: smp2p: Add IPC logging support

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Add IPC logs to track bit state entries. These logs will help detect
issues in remote processor bootup.

Change-Id: I31a549532122e0ad7e4c9da454ee65c7b48fdd1d
Signed-off-by: Chris Lew <clew@codeaurora.org>
This commit is contained in:
Chris Lew 2018-06-20 17:49:13 -07:00 • committed by Gerrit - the friendly Code Review server
commit 0c54c1c555
1 changed files with 19 additions and 0 deletions
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19
drivers/soc/qcom/smp2p.c
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@ -19,6 +19,8 @@
#include <linux/soc/qcom/smem_state.h>
#include <linux/spinlock.h>
#include <linux/ipc_logging.h>
/*
* The Shared Memory Point to Point (SMP2P) protocol facilitates communication
* of a single 32-bit value between two processors. Each value has a single
@ -158,6 +160,14 @@ struct qcom_smp2p {
struct list_head outbound;
};
static void *ilc;
#define SMP2P_LOG_PAGE_CNT 2
#define SMP2P_INFO(x, ...) \
do { \
if (ilc) \
ipc_log_string(ilc, "[%s]: "x, __func__, ##__VA_ARGS__); \
} while (0)
static void qcom_smp2p_kick(struct qcom_smp2p *smp2p)
{
/* Make sure any updated data is written before the kick */
@ -183,6 +193,7 @@ static bool qcom_smp2p_check_ssr(struct qcom_smp2p *smp2p)
if (restart == smp2p->ssr_ack)
return false;
SMP2P_INFO("%d: SSR DETECTED\n", smp2p->remote_pid);
return true;
}
@ -216,6 +227,8 @@ static void qcom_smp2p_negotiate(struct qcom_smp2p *smp2p)
smp2p->ssr_ack_enabled = true;
smp2p->open = true;
SMP2P_INFO("%d: state=open ssr_ack=%d\n", smp2p->remote_pid,
smp2p->ssr_ack_enabled);
}
}
@ -257,6 +270,9 @@ static void qcom_smp2p_notify_in(struct qcom_smp2p *smp2p)
if (!status)
continue;
SMP2P_INFO("%d: %s: status:%0x val:%0x\n",
smp2p->remote_pid, entry->name, status, val);
for_each_set_bit(i, &status, 32) {
if ((val & BIT(i) && test_bit(i, entry->irq_rising)) ||
(!(val & BIT(i)) && test_bit(i, entry->irq_falling))) {
@ -528,6 +544,9 @@ static int qcom_smp2p_probe(struct platform_device *pdev)
const char *key;
int ret;
if (!ilc)
ilc = ipc_log_context_create(SMP2P_LOG_PAGE_CNT, "smp2p", 0);
smp2p = devm_kzalloc(&pdev->dev, sizeof(*smp2p), GFP_KERNEL);
if (!smp2p)
return -ENOMEM;