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authorNishanth Menon <nm@ti.com>2014-04-11 12:24:56 -0500
committerNishanth Menon <nm@ti.com>2014-05-05 14:33:52 -0500
commitc98aa7aaa24b7687a170b93c4bf3111a6d166069 (patch)
tree34d930842a5909ea1e728799555ac2b0e1b06844 /drivers
parentd4d8819e205854cc102e366f30b8eadd60a58e97 (diff)
downloadop-kernel-dev-c98aa7aaa24b7687a170b93c4bf3111a6d166069.zip
op-kernel-dev-c98aa7aaa24b7687a170b93c4bf3111a6d166069.tar.gz
bus: omap_l3_noc: make error reporting and handling common
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. Handle the register address difference for master code for standard error and custom error as well. While at it, fix a minor indentation error. Signed-off-by: Nishanth Menon <nm@ti.com> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Tested-by: Darren Etheridge <detheridge@ti.com> Tested-by: Sekhar Nori <nsekhar@ti.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/bus/omap_l3_noc.c72
-rw-r--r--drivers/bus/omap_l3_noc.h3
2 files changed, 47 insertions, 28 deletions
diff --git a/drivers/bus/omap_l3_noc.c b/drivers/bus/omap_l3_noc.c
index 8a1926d..42e4114 100644
--- a/drivers/bus/omap_l3_noc.c
+++ b/drivers/bus/omap_l3_noc.c
@@ -62,6 +62,8 @@ static irqreturn_t l3_interrupt_handler(int irq, void *_l3)
struct l3_target_data *l3_targ_inst;
struct l3_flagmux_data *flag_mux;
struct l3_masters_data *master;
+ char *err_description;
+ char err_string[30] = { 0 };
/* Get the Type of interrupt */
inttype = irq == l3->app_irq ? L3_APPLICATION_ERROR : L3_DEBUG_ERROR;
@@ -78,6 +80,8 @@ 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);
@@ -123,47 +127,61 @@ static irqreturn_t l3_interrupt_handler(int irq, void *_l3)
l3_targ_stderr = l3_targ_base + L3_TARG_STDERRLOG_MAIN;
l3_targ_slvofslsb = l3_targ_base +
L3_TARG_STDERRLOG_SLVOFSLSB;
- l3_targ_mstaddr = l3_targ_base +
- L3_TARG_STDERRLOG_MSTADDR;
std_err_main = readl_relaxed(l3_targ_stderr);
- /* STDERRLOG_MSTADDR Stores the NTTP master address. */
- masterid = (readl_relaxed(l3_targ_mstaddr) &
- l3->mst_addr_mask) >>
- __ffs(l3->mst_addr_mask);
-
switch (std_err_main & CUSTOM_ERROR) {
case STANDARD_ERROR:
- WARN(true, "L3 standard error: TARGET:%s at 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));
+
+ l3_targ_mstaddr = l3_targ_base +
+ L3_TARG_STDERRLOG_MSTADDR;
break;
case CUSTOM_ERROR:
- for (k = 0, master = l3->l3_masters;
- k < l3->num_masters; k++, master++) {
- if (masterid == master->id) {
- master_name = master->name;
- break;
- }
- }
- 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";
+
+ l3_targ_mstaddr = l3_targ_base +
+ L3_TARG_STDERRLOG_CINFO_MSTADDR;
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)
+ break;
+
+ /* STDERRLOG_MSTADDR Stores the NTTP master address. */
+ masterid = (readl_relaxed(l3_targ_mstaddr) &
+ l3->mst_addr_mask) >>
+ __ffs(l3->mst_addr_mask);
+
+ for (k = 0, master = l3->l3_masters;
+ k < l3->num_masters; k++, master++) {
+ if (masterid == master->id) {
+ master_name = master->name;
+ break;
+ }
+ }
+
+ WARN(true,
+ "%s:L3 %s Error: MASTER %s TARGET %s%s\n",
+ dev_name(l3->dev),
+ 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;
diff --git a/drivers/bus/omap_l3_noc.h b/drivers/bus/omap_l3_noc.h
index ba86924..ea2f51c 100644
--- a/drivers/bus/omap_l3_noc.h
+++ b/drivers/bus/omap_l3_noc.h
@@ -29,8 +29,9 @@
/* L3 TARG register offsets */
#define L3_TARG_STDERRLOG_MAIN 0x48
+#define L3_TARG_STDERRLOG_MSTADDR 0x50
#define L3_TARG_STDERRLOG_SLVOFSLSB 0x5c
-#define L3_TARG_STDERRLOG_MSTADDR 0x68
+#define L3_TARG_STDERRLOG_CINFO_MSTADDR 0x68
#define L3_FLAGMUX_REGERR0 0xc
#define L3_FLAGMUX_MASK0 0x8
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