bus: omap_l3_noc: Add support for discountinous flag mux input numbers
On DRA7, unlike on OMAP4 and OMAP5, the flag mux input numbers used
to indicate the source of errors are not continous. Have a way in the
driver to catch these and WARN the user of the flag mux input thats
either undocumented or wrong.
In the similar vein, Timeout errors in AM43x can't be cleared per h/w
team, neither does it have a STDERRLOG_MAIN to clear the error.
Further, the mux bit offset might not even be indexed into our array
of known mux input description, in which case we'd have a abort.
So, define a static range check for bit description and any definition
which has target_name set to NULL (the ones that are not populated or
ones that are specifically marked in the case of discontinous input
numbers), can handle the same gracefully. Upon occurance of error from
such sources, mask it. Otherwise, we'd have an infinite interrupt
source without any means to clear it.
NOTE: follow on patch ensures that these masked bits are ignored.
[nm@ti.com: rebase, squash and improve]
Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Afzal Mohammed <afzal@ti.com>
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>
diff --git a/drivers/bus/omap_l3_noc.h b/drivers/bus/omap_l3_noc.h
index ae28784..66caece 100644
--- a/drivers/bus/omap_l3_noc.h
+++ b/drivers/bus/omap_l3_noc.h
@@ -30,6 +30,11 @@
#define L3_TARG_STDERRLOG_SLVOFSLSB 0x5c
#define L3_TARG_STDERRLOG_MSTADDR 0x68
#define L3_FLAGMUX_REGERR0 0xc
+#define L3_FLAGMUX_MASK0 0x8
+
+#define L3_TARGET_NOT_SUPPORTED NULL
+
+#define MAX_CLKDM_TARGETS 31
#define NUM_OF_L3_MASTERS (sizeof(l3_masters)/sizeof(l3_masters[0]))
@@ -61,7 +66,7 @@
0X0200
};
-static struct l3_target_data l3_target_inst_data_clk1[] = {
+static struct l3_target_data l3_target_inst_data_clk1[MAX_CLKDM_TARGETS] = {
{0x100, "DMM1",},
{0x200, "DMM2",},
{0x300, "ABE",},
@@ -71,7 +76,7 @@
{0x900, "L4WAKEUP",},
};
-static struct l3_target_data l3_target_inst_data_clk2[] = {
+static struct l3_target_data l3_target_inst_data_clk2[MAX_CLKDM_TARGETS] = {
{0x500, "CORTEXM3",},
{0x300, "DSS",},
{0x100, "GPMC",},
@@ -95,7 +100,7 @@
{0x1700, "LLI",},
};
-static struct l3_target_data l3_target_inst_data_clk3[] = {
+static struct l3_target_data l3_target_inst_data_clk3[MAX_CLKDM_TARGETS] = {
{0x0100, "EMUSS",},
{0x0300, "DEBUG SOURCE",},
{0x0, "HOST CLK3",},