octeontx2-af: Add devlink health reporters for NIX

Add health reporters for RVU NIX block.
NIX Health reporters handle following HW event groups
- GENERAL events
- ERROR events
- RAS events
- RVU event

Output:

 # devlink health
 pci/0002:01:00.0:
   reporter hw_npa_intr
     state healthy error 0 recover 0 grace_period 0 auto_recover true auto_dump true
   reporter hw_npa_gen
     state healthy error 0 recover 0 grace_period 0 auto_recover true auto_dump true
   reporter hw_npa_err
     state healthy error 0 recover 0 grace_period 0 auto_recover true auto_dump true
   reporter hw_npa_ras
     state healthy error 0 recover 0 grace_period 0 auto_recover true auto_dump true
   reporter hw_nix_intr
     state healthy error 0 recover 0 grace_period 0 auto_recover true auto_dump true
   reporter hw_nix_gen
     state healthy error 0 recover 0 grace_period 0 auto_recover true auto_dump true
   reporter hw_nix_err
     state healthy error 0 recover 0 grace_period 0 auto_recover true auto_dump true
   reporter hw_nix_ras
     state healthy error 0 recover 0 grace_period 0 auto_recover true auto_dump true

 # devlink health dump show pci/0002:01:00.0 reporter hw_nix_intr
  NIX_AF_RVU:
	NIX RVU Interrupt Reg : 1
	Unmap Slot Error
 # devlink health dump show pci/0002:01:00.0 reporter hw_nix_gen
  NIX_AF_GENERAL:
	NIX General Interrupt Reg : 1
	Rx multicast pkt drop

Each reporter dump shows the Register value and the description of the cause.
Signed-off-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
Signed-off-by: Jerin Jacob <jerinj@marvell.com>
Signed-off-by: George Cherian <george.cherian@marvell.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/marvell/octeontx2/af/rvu_devlink.h

@@ -41,11 +41,38 @@ struct rvu_npa_health_reporters {
 	struct work_struct              ras_work;
 };
 
+enum nix_af_rvu_health {
+	NIX_AF_RVU_INTR,
+	NIX_AF_RVU_GEN,
+	NIX_AF_RVU_ERR,
+	NIX_AF_RVU_RAS,
+};
+
+struct rvu_nix_event_ctx {
+	u64 nix_af_rvu_int;
+	u64 nix_af_rvu_gen;
+	u64 nix_af_rvu_err;
+	u64 nix_af_rvu_ras;
+};
+
+struct rvu_nix_health_reporters {
+	struct rvu_nix_event_ctx *nix_event_ctx;
+	struct devlink_health_reporter *rvu_hw_nix_intr_reporter;
+	struct work_struct		intr_work;
+	struct devlink_health_reporter *rvu_hw_nix_gen_reporter;
+	struct work_struct		gen_work;
+	struct devlink_health_reporter *rvu_hw_nix_err_reporter;
+	struct work_struct		err_work;
+	struct devlink_health_reporter *rvu_hw_nix_ras_reporter;
+	struct work_struct		ras_work;
+};
+
 struct rvu_devlink {
 	struct devlink *dl;
 	struct rvu *rvu;
 	struct workqueue_struct *devlink_wq;
 	struct rvu_npa_health_reporters *rvu_npa_health_reporter;
+	struct rvu_nix_health_reporters *rvu_nix_health_reporter;
 };
 
 /* Devlink APIs */

drivers/net/ethernet/marvell/octeontx2/af/rvu_struct.h

@@ -74,6 +74,16 @@ enum npa_af_int_vec_e {
 	NPA_AF_INT_VEC_CNT	= 0x5,
 };
 
+/* NIX Admin function Interrupt Vector Enumeration */
+enum nix_af_int_vec_e {
+	NIX_AF_INT_VEC_RVU	= 0x0,
+	NIX_AF_INT_VEC_GEN	= 0x1,
+	NIX_AF_INT_VEC_AQ_DONE	= 0x2,
+	NIX_AF_INT_VEC_AF_ERR	= 0x3,
+	NIX_AF_INT_VEC_POISON	= 0x4,
+	NIX_AF_INT_VEC_CNT	= 0x5,
+};
+
 /**
  * RVU PF Interrupt Vector Enumeration
  */