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OMAP: Improve register access in L3 Error handler.

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* Changed the way of accessing L3 target
  registers from standard base rather
  than relative to STDERRLOG_MAIN.

* Use ffs() to find error source from
  the L3_FLAGMUX_REGERRn register.

* Remove extra l3_base[] entry.

* Modified L3 custom error message.

Signed-off-by: Todd Poynor <toddpoynor@google.com>
Signed-off-by: sricharan <r.sricharan@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
This commit is contained in:
Todd Poynor
2011-08-24 19:11:39 +05:30
committed by Santosh Shilimkar
parent b6fd41e29d
commit 342fd14429
4 changed files with 65 additions and 71 deletions
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43
arch/arm/mach-omap2/omap_l3_noc.c
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@ -56,10 +56,9 @@ static irqreturn_t l3_interrupt_handler(int irq, void *_l3)
{
struct omap4_l3 *l3 = _l3;
int inttype, i, j;
int inttype, i;
int err_src = 0;
u32 std_err_main_addr, std_err_main, err_reg;
u32 base, slave_addr, clear;
u32 std_err_main, err_reg, clear, base, l3_targ_base;
char *source_name;
/* Get the Type of interrupt */
@ -71,42 +70,43 @@ static irqreturn_t l3_interrupt_handler(int irq, void *_l3)
* to determine the source
*/
base = (u32)l3->l3_base[i];
err_reg = readl(base + l3_flagmux[i] + (inttype << 3));
err_reg = readl(base + l3_flagmux[i] +
+ L3_FLAGMUX_REGERR0 + (inttype << 3));
/* Get the corresponding error and analyse */
if (err_reg) {
/* Identify the source from control status register */
for (j = 0; !(err_reg & (1 << j)); j++)
;
err_src = __ffs(err_reg);
err_src = j;
/* Read the stderrlog_main_source from clk domain */
std_err_main_addr = base + *(l3_targ[i] + err_src);
std_err_main = readl(std_err_main_addr);
l3_targ_base = base + *(l3_targ[i] + err_src);
std_err_main = readl(l3_targ_base +
L3_TARG_STDERRLOG_MAIN);
switch (std_err_main & CUSTOM_ERROR) {
case STANDARD_ERROR:
source_name =
l3_targ_stderrlog_main_name[i][err_src];
slave_addr = std_err_main_addr +
L3_SLAVE_ADDRESS_OFFSET;
l3_targ_inst_name[i][err_src];
WARN(true, "L3 standard error: SOURCE:%s at address 0x%x\n",
source_name, readl(slave_addr));
source_name,
readl(l3_targ_base +
L3_TARG_STDERRLOG_SLVOFSLSB));
/* clear the std error log*/
clear = std_err_main | CLEAR_STDERR_LOG;
writel(clear, std_err_main_addr);
writel(clear, l3_targ_base +
L3_TARG_STDERRLOG_MAIN);
break;
case CUSTOM_ERROR:
source_name =
l3_targ_stderrlog_main_name[i][err_src];
l3_targ_inst_name[i][err_src];
WARN(true, "CUSTOM SRESP error with SOURCE:%s\n",
source_name);
WARN(true, "L3 custom error: SOURCE:%s\n",
source_name);
/* clear the std error log*/
clear = std_err_main | CLEAR_STDERR_LOG;
writel(clear, std_err_main_addr);
writel(clear, l3_targ_base +
L3_TARG_STDERRLOG_MAIN);
break;
default:
@ -123,9 +123,8 @@ static irqreturn_t l3_interrupt_handler(int irq, void *_l3)
static int __init omap4_l3_probe(struct platform_device *pdev)
{
static struct omap4_l3 *l3;
struct resource *res;
int ret;
int irq;
struct resource *res;
int ret, irq;
l3 = kzalloc(sizeof(*l3), GFP_KERNEL);
if (!l3)