Add C macros to print debug messages from VCC module
Signed-off-by: Jagannathan Raman <jag.raman@xxxxxxxxxx>
Reviewed-by: Liam Merwick <liam.merwick@xxxxxxxxxx>
Reviewed-by: Shannon Nelson <shannon.nelson@xxxxxxxxxx>
---
arch/sparc/kernel/ldc.c | 1 +
drivers/tty/vcc.c | 41 +++++++++++++++++++++++++++++++++++++++++
2 files changed, 42 insertions(+), 0 deletions(-)
diff --git a/arch/sparc/kernel/ldc.c b/arch/sparc/kernel/ldc.c
index 840e0b2..1169915 100644
--- a/arch/sparc/kernel/ldc.c
+++ b/arch/sparc/kernel/ldc.c
@@ -1493,6 +1493,7 @@ void __ldc_print(struct ldc_channel *lp, const char *caller)
lp->tx_head, lp->tx_tail, lp->tx_num_entries,
lp->rcv_nxt, lp->snd_nxt);
}
+EXPORT_SYMBOL(__ldc_print);
static int write_raw(struct ldc_channel *lp, const void *buf, unsigned int size)
{
diff --git a/drivers/tty/vcc.c b/drivers/tty/vcc.c
index e1b8099..4fd8dd0 100644
--- a/drivers/tty/vcc.c
+++ b/drivers/tty/vcc.c
@@ -5,6 +5,47 @@
#include <linux/module.h>
+#define DRV_MODULE_NAME "vcc"
+#define DRV_MODULE_VERSION "1.1"
+#define DRV_MODULE_RELDATE "July 1, 2017"
+
+MODULE_DESCRIPTION("Sun LDOM virtual console concentrator driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_MODULE_VERSION);
+
+int vcc_dbg;
+int vcc_dbg_ldc;
+int vcc_dbg_vio;
+
+module_param(vcc_dbg, uint, 0664);
+module_param(vcc_dbg_ldc, uint, 0664);
+module_param(vcc_dbg_vio, uint, 0664);
+
+#define VCC_DBG_DRV 0x1
+#define VCC_DBG_LDC 0x2
+#define VCC_DBG_PKT 0x4
+
+#define vccdbg(f, a...) \
+ do { \
+ if (vcc_dbg & VCC_DBG_DRV) \
+ pr_info(f, ## a); \
+ } while (0) \
+
+#define vccdbgl(l) \
+ do { \
+ if (vcc_dbg & VCC_DBG_LDC) \
+ ldc_print(l); \
+ } while (0) \
+
+#define vccdbgp(pkt) \
+ do { \
+ if (vcc_dbg & VCC_DBG_PKT) { \
+ int i; \
+ for (i = 0; i < pkt.tag.stype; i++) \
+ pr_info("[%c]", pkt.data[i]); \
+ } \
+ } while (0) \
+
static int __init vcc_init(void)
{
return 0;
--
1.7.1
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