[PATCH 06/15] bus: omap_l3_noc: make error reporting and handling common.

Nishanth Menon
2014-04-14T16:25:17Z

The logic between handling CUSTOM_ERROR and STANDARD_ERROR
is just the reporting style.

So make it generic, simplify and standardize the reporting
with both master and target information printed to log.

While at it, fix a minor formatting error.

Signed-off-by: Nishanth Menon <nm@ti.com>
---
drivers/bus/omap_l3_noc.c | 47 ++++++++++++++++++++++++++++-----------------
1 file changed, 29 insertions(+), 18 deletions(-)

diff --git a/drivers/bus/omap_l3_noc.c b/drivers/bus/omap_l3_noc.c
index 0ef8b75..0f0417a 100644
--- a/drivers/bus/omap_l3_noc.c
+++ b/drivers/bus/omap_l3_noc.c
@@ -58,6 +58,8 @@ static irqreturn_t l3_interrupt_handler(int irq, void *_l3)
void __iomem *l3_targ_stderr, *l3_targ_slvofslsb, *l3_targ_mstaddr;
char *target_name, *master_name = "UN IDENTIFIED";
struct l3_target_data *l3_targ_inst;
+ char *err_description;
+ char err_string[30] = { 0 };

/* Get the Type of interrupt */
inttype = irq == l3->app_irq ? L3_APPLICATION_ERROR : L3_DEBUG_ERROR;
@@ -73,6 +75,8 @@ static irqreturn_t l3_interrupt_handler(int irq, void *_l3)

/* Get the corresponding error and analyse */
if (err_reg) {
+ bool std_err = true;
+
/* Identify the source from control status register */
err_src = __ffs(err_reg);
l3_targ_inst = &l3_targ[i][err_src];
@@ -89,35 +93,42 @@ static irqreturn_t l3_interrupt_handler(int irq, void *_l3)
std_err_main = readl_relaxed(l3_targ_stderr);
masterid = readl_relaxed(l3_targ_mstaddr);

+ for (k = 0; k < NUM_OF_L3_MASTERS; k++) {
+ if (masterid == l3_masters[k].id)
+ master_name = l3_masters[k].name;
+ }
+
switch (std_err_main & CUSTOM_ERROR) {
case STANDARD_ERROR:
- WARN(true, "L3 standard error: TARGET:%s@address 0x%x\n",
- target_name,
- readl_relaxed(l3_targ_slvofslsb));
- /* clear the std error log*/
- clear = std_err_main | CLEAR_STDERR_LOG;
- writel_relaxed(clear, l3_targ_stderr);
+ err_description = "Standard";
+ snprintf(err_string, sizeof(err_string),
+ ": At Address: 0x%08X",
+ readl_relaxed(l3_targ_slvofslsb));
break;

case CUSTOM_ERROR:
- for (k = 0; k < NUM_OF_L3_MASTERS; k++) {
- if (masterid == l3_masters[k].id)
- master_name =
- l3_masters[k].name;
- }
- WARN(true, "L3 custom error: MASTER:%s TARGET:%s\n",
- master_name, target_name);
- /* clear the std error log*/
- clear = std_err_main | CLEAR_STDERR_LOG;
- writel_relaxed(clear, l3_targ_stderr);
+ err_description = "Custom";
break;

default:
+ std_err = false;
/* Nothing to be handled here as of now */
break;
}
- /* Error found so break the for loop */
- break;
+
+ if (std_err) {
+ WARN(true,
+ "L3 %s Error: MASTER %s TARGET %s %s\n",
+ err_description,
+ master_name, target_name,
+ err_string);
+ /* clear the std error log*/
+ clear = std_err_main | CLEAR_STDERR_LOG;
+ writel_relaxed(clear, l3_targ_stderr);
+ }
+
+ /* Error found so break the for loop */
+ break;
}
}
return IRQ_HANDLED;
--
1.7.9.5