OMAP: Print Initiator name for l3 custom error.

The initiator id gets logged in the l3 target registers for custom error.
So print it to aid debugging.

Based on a internal patch by Devaraj Rangasamy <dev@ti.com>

Signed-off-by: sricharan <r.sricharan@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>

diff --git a/arch/arm/mach-omap2/omap_l3_noc.c b/arch/arm/mach-omap2/omap_l3_noc.c
index 8f18357..07a3d3e 100644 (file)
--- a/arch/arm/mach-omap2/omap_l3_noc.c
+++ b/arch/arm/mach-omap2/omap_l3_noc.c
@@ -56,11 +56,11 @@ static irqreturn_t l3_interrupt_handler(int irq, void *_l3)
 {
 
        struct omap4_l3 *l3 = _l3;
-       int inttype, i;
+       int inttype, i, k;
        int err_src = 0;
-       u32 std_err_main, err_reg, clear;
+       u32 std_err_main, err_reg, clear, masterid;
        void __iomem *base, *l3_targ_base;
-       char *source_name;
+       char *target_name, *master_name = "UN IDENTIFIED";
 
        /* Get the Type of interrupt */
        inttype = irq == l3->app_irq ? L3_APPLICATION_ERROR : L3_DEBUG_ERROR;
@@ -83,13 +83,15 @@ static irqreturn_t l3_interrupt_handler(int irq, void *_l3)
                        l3_targ_base = base + *(l3_targ[i] + err_src);
                        std_err_main =  __raw_readl(l3_targ_base +
                                        L3_TARG_STDERRLOG_MAIN);
+                       masterid = __raw_readl(l3_targ_base +
+                                       L3_TARG_STDERRLOG_MSTADDR);
 
                        switch (std_err_main & CUSTOM_ERROR) {
                        case STANDARD_ERROR:
-                               source_name =
+                               target_name =
                                        l3_targ_inst_name[i][err_src];
-                               WARN(true, "L3 standard error: SOURCE:%s at address 0x%x\n",
-                                       source_name,
+                               WARN(true, "L3 standard error: TARGET:%s at address 0x%x\n",
+                                       target_name,
                                        __raw_readl(l3_targ_base +
                                                L3_TARG_STDERRLOG_SLVOFSLSB));
                                /* clear the std error log*/
@@ -99,11 +101,15 @@ static irqreturn_t l3_interrupt_handler(int irq, void *_l3)
                                break;
 
                        case CUSTOM_ERROR:
-                               source_name =
+                               target_name =
                                        l3_targ_inst_name[i][err_src];
-
-                               WARN(true, "L3 custom error: SOURCE:%s\n",
-                                       source_name);
+                               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(clear, l3_targ_base +

diff --git a/arch/arm/mach-omap2/omap_l3_noc.h b/arch/arm/mach-omap2/omap_l3_noc.h
index 74c1643..90b5098 100644 (file)
--- a/arch/arm/mach-omap2/omap_l3_noc.h
+++ b/arch/arm/mach-omap2/omap_l3_noc.h
@@ -34,8 +34,11 @@
 /* L3 TARG register offsets */
 #define L3_TARG_STDERRLOG_MAIN         0x48
 #define L3_TARG_STDERRLOG_SLVOFSLSB    0x5c
+#define L3_TARG_STDERRLOG_MSTADDR      0x68
 #define L3_FLAGMUX_REGERR0             0xc
 
+#define NUM_OF_L3_MASTERS      (sizeof(l3_masters)/sizeof(l3_masters[0]))
+
 static u32 l3_flagmux[L3_MODULES] = {
        0x500,
        0x1000,
@@ -76,6 +79,37 @@ static u32 l3_targ_inst_clk3[] = {
        0x0100  /* EMUSS */
 };
 
+static struct l3_masters_data {
+       u32 id;
+       char name[10];
+} l3_masters[] = {
+       { 0x0 , "MPU"},
+       { 0x10, "CS_ADP"},
+       { 0x14, "xxx"},
+       { 0x20, "DSP"},
+       { 0x30, "IVAHD"},
+       { 0x40, "ISS"},
+       { 0x44, "DucatiM3"},
+       { 0x48, "FaceDetect"},
+       { 0x50, "SDMA_Rd"},
+       { 0x54, "SDMA_Wr"},
+       { 0x58, "xxx"},
+       { 0x5C, "xxx"},
+       { 0x60, "SGX"},
+       { 0x70, "DSS"},
+       { 0x80, "C2C"},
+       { 0x88, "xxx"},
+       { 0x8C, "xxx"},
+       { 0x90, "HSI"},
+       { 0xA0, "MMC1"},
+       { 0xA4, "MMC2"},
+       { 0xA8, "MMC6"},
+       { 0xB0, "UNIPRO1"},
+       { 0xC0, "USBHOSTHS"},
+       { 0xC4, "USBOTGHS"},
+       { 0xC8, "USBHOSTFS"}
+};
+
 static char *l3_targ_inst_name[L3_MODULES][18] = {
        {
                "DMM1",