[PATCH net-next 0/9] octeontx2-af: Miscellaneous changes for CPT

[PATCH net-next 0/9] octeontx2-af: Miscellaneous changes for CPT

[Srujana Challa]

This patchset consists of miscellaneous changes for CPT.
- Adds a new mailbox to reset the requested CPT LF.
- Modify FLR sequence as per HW team suggested.
- Adds support to recover CPT engines when they gets fault.
- Updates CPT inbound inline IPsec configuration mailbox,
  as per new generation of the OcteonTX2 chips.
- Adds a new mailbox to retuen CPT FLT Interrupt info.

Dave Kleikamp (1):
  octeontx2-af: Fix interrupt name strings completely

Nithin Dabilpuram (1):
  octeontx2-af: restore rxc conf after teardown sequence

Srujana Challa (7):
  octeontx2-af: recover CPT engine when it gets fault
  octeontx2-af: add mbox for CPT LF reset
  octeontx2-af: modify FLR sequence for CPT
  octeontx2-af: optimize cpt pf identification
  octeontx2-af: update CPT inbound inline IPsec config mailbox
  octeontx2-af: add ctx ilen to cpt lf alloc mailbox
  octeontx2-af: add mbox to return CPT_AF_FLT_INT info

 .../net/ethernet/marvell/octeontx2/af/mbox.h  |  33 +-
 .../net/ethernet/marvell/octeontx2/af/rvu.c   |   8 +
 .../net/ethernet/marvell/octeontx2/af/rvu.h   |  18 +
 .../ethernet/marvell/octeontx2/af/rvu_cpt.c   | 308 +++++++++++++-----
 .../ethernet/marvell/octeontx2/af/rvu_nix.c   |  46 ++-
 .../ethernet/marvell/octeontx2/af/rvu_reg.h   |   2 +
 6 files changed, 323 insertions(+), 92 deletions(-)

-- 
2.25.1

[PATCH net-next,1/9] octeontx2-af: Fix interrupt name strings completely

[Srujana Challa]

From: Dave Kleikamp <dave.kleikamp@oracle.com>

The earlier commit: ("octeontx2-af: Fix interrupt name strings") fixed
one instance of a stack address being saved as if it were static.
This patch fixes another instance.

Signed-off-by: Henry Willard <henry.willard@oracle.com>
Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
---
 drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c
index 38bbae5d9ae0..33979adb7d02 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c
@@ -209,7 +209,6 @@ static int cpt_register_interrupts(struct rvu *rvu, int blkaddr)
 	struct rvu_hwinfo *hw = rvu->hw;
 	struct rvu_block *block;
 	int i, offs, ret = 0;
-	char irq_name[16];
 
 	if (!is_block_implemented(rvu->hw, blkaddr))
 		return 0;
@@ -226,10 +225,10 @@ static int cpt_register_interrupts(struct rvu *rvu, int blkaddr)
 		return cpt_10k_register_interrupts(block, offs);
 
 	for (i = CPT_AF_INT_VEC_FLT0; i < CPT_AF_INT_VEC_RVU; i++) {
-		snprintf(irq_name, sizeof(irq_name), "CPTAF FLT%d", i);
+		sprintf(&rvu->irq_name[(offs + i) * NAME_SIZE], "CPTAF FLT%d", i);
 		ret = rvu_cpt_do_register_interrupt(block, offs + i,
 						    rvu_cpt_af_flt_intr_handler,
-						    irq_name);
+						    &rvu->irq_name[(offs + i) * NAME_SIZE]);
 		if (ret)
 			goto err;
 		rvu_write64(rvu, blkaddr, CPT_AF_FLTX_INT_ENA_W1S(i), 0x1);
-- 
2.25.1

Re: [PATCH net-next,1/9] octeontx2-af: Fix interrupt name strings completely

[Jakub Kicinski]

On Mon, 9 Jan 2023 13:05:55 +0530 Srujana Challa wrote:
> From: Dave Kleikamp <dave.kleikamp@oracle.com>
> 
> The earlier commit: ("octeontx2-af: Fix interrupt name strings") fixed
>
> one instance of a stack address being saved as if it were static.
> This patch fixes another instance.

This is a fix, fixes need to be posted for net and with the Fixes tag.

[PATCH net-next,2/9] octeontx2-af: recover CPT engine when it gets fault

[Srujana Challa]

When CPT engine has uncorrectable errors, it will get halted and
must be disabled and re-enabled. This patch adds code for the same.

Signed-off-by: Srujana Challa <schalla@marvell.com>
---
 .../ethernet/marvell/octeontx2/af/rvu_cpt.c   | 107 +++++++++++++-----
 1 file changed, 79 insertions(+), 28 deletions(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c
index 33979adb7d02..1ed16ce515bb 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c
@@ -37,34 +37,60 @@
 	(_rsp)->free_sts_##etype = free_sts;                        \
 })
 
-static irqreturn_t rvu_cpt_af_flt_intr_handler(int irq, void *ptr)
+static irqreturn_t cpt_af_flt_intr_handler(int vec, void *ptr)
 {
 	struct rvu_block *block = ptr;
 	struct rvu *rvu = block->rvu;
 	int blkaddr = block->addr;
-	u64 reg0, reg1, reg2;
-
-	reg0 = rvu_read64(rvu, blkaddr, CPT_AF_FLTX_INT(0));
-	reg1 = rvu_read64(rvu, blkaddr, CPT_AF_FLTX_INT(1));
-	if (!is_rvu_otx2(rvu)) {
-		reg2 = rvu_read64(rvu, blkaddr, CPT_AF_FLTX_INT(2));
-		dev_err_ratelimited(rvu->dev,
-				    "Received CPTAF FLT irq : 0x%llx, 0x%llx, 0x%llx",
-				     reg0, reg1, reg2);
-	} else {
-		dev_err_ratelimited(rvu->dev,
-				    "Received CPTAF FLT irq : 0x%llx, 0x%llx",
-				     reg0, reg1);
+	u64 reg, val;
+	int i, eng;
+	u8 grp;
+
+	reg = rvu_read64(rvu, blkaddr, CPT_AF_FLTX_INT(vec));
+	dev_err_ratelimited(rvu->dev, "Received CPTAF FLT%d irq : 0x%llx", vec, reg);
+
+	i = -1;
+	while ((i = find_next_bit((unsigned long *)&reg, 64, i + 1)) < 64) {
+		switch (vec) {
+		case 0:
+			eng = i;
+			break;
+		case 1:
+			eng = i + 64;
+			break;
+		case 2:
+			eng = i + 128;
+			break;
+		}
+		grp = rvu_read64(rvu, blkaddr, CPT_AF_EXEX_CTL2(eng)) & 0xFF;
+		/* Disable and enable the engine which triggers fault */
+		rvu_write64(rvu, blkaddr, CPT_AF_EXEX_CTL2(eng), 0x0);
+		val = rvu_read64(rvu, blkaddr, CPT_AF_EXEX_CTL(eng));
+		rvu_write64(rvu, blkaddr, CPT_AF_EXEX_CTL(eng), val & ~1ULL);
+
+		rvu_write64(rvu, blkaddr, CPT_AF_EXEX_CTL2(eng), grp);
+		rvu_write64(rvu, blkaddr, CPT_AF_EXEX_CTL(eng), val | 1ULL);
 	}
-
-	rvu_write64(rvu, blkaddr, CPT_AF_FLTX_INT(0), reg0);
-	rvu_write64(rvu, blkaddr, CPT_AF_FLTX_INT(1), reg1);
-	if (!is_rvu_otx2(rvu))
-		rvu_write64(rvu, blkaddr, CPT_AF_FLTX_INT(2), reg2);
+	rvu_write64(rvu, blkaddr, CPT_AF_FLTX_INT(vec), reg);
 
 	return IRQ_HANDLED;
 }
 
+static irqreturn_t rvu_cpt_af_flt0_intr_handler(int irq, void *ptr)
+{
+	return cpt_af_flt_intr_handler(CPT_AF_INT_VEC_FLT0, ptr);
+}
+
+static irqreturn_t rvu_cpt_af_flt1_intr_handler(int irq, void *ptr)
+{
+	return cpt_af_flt_intr_handler(CPT_AF_INT_VEC_FLT1, ptr);
+}
+
+static irqreturn_t rvu_cpt_af_flt2_intr_handler(int irq, void *ptr)
+{
+	return cpt_af_flt_intr_handler(CPT_10K_AF_INT_VEC_FLT2, ptr);
+}
+
 static irqreturn_t rvu_cpt_af_rvu_intr_handler(int irq, void *ptr)
 {
 	struct rvu_block *block = ptr;
@@ -119,8 +145,10 @@ static void cpt_10k_unregister_interrupts(struct rvu_block *block, int off)
 	int i;
 
 	/* Disable all CPT AF interrupts */
-	for (i = 0; i < CPT_10K_AF_INT_VEC_RVU; i++)
-		rvu_write64(rvu, blkaddr, CPT_AF_FLTX_INT_ENA_W1C(i), 0x1);
+	rvu_write64(rvu, blkaddr, CPT_AF_FLTX_INT_ENA_W1C(0), ~0ULL);
+	rvu_write64(rvu, blkaddr, CPT_AF_FLTX_INT_ENA_W1C(1), ~0ULL);
+	rvu_write64(rvu, blkaddr, CPT_AF_FLTX_INT_ENA_W1C(2), 0xFFFF);
+
 	rvu_write64(rvu, blkaddr, CPT_AF_RVU_INT_ENA_W1C, 0x1);
 	rvu_write64(rvu, blkaddr, CPT_AF_RAS_INT_ENA_W1C, 0x1);
 
@@ -151,7 +179,7 @@ static void cpt_unregister_interrupts(struct rvu *rvu, int blkaddr)
 
 	/* Disable all CPT AF interrupts */
 	for (i = 0; i < CPT_AF_INT_VEC_RVU; i++)
-		rvu_write64(rvu, blkaddr, CPT_AF_FLTX_INT_ENA_W1C(i), 0x1);
+		rvu_write64(rvu, blkaddr, CPT_AF_FLTX_INT_ENA_W1C(i), ~0ULL);
 	rvu_write64(rvu, blkaddr, CPT_AF_RVU_INT_ENA_W1C, 0x1);
 	rvu_write64(rvu, blkaddr, CPT_AF_RAS_INT_ENA_W1C, 0x1);
 
@@ -172,16 +200,31 @@ static int cpt_10k_register_interrupts(struct rvu_block *block, int off)
 {
 	struct rvu *rvu = block->rvu;
 	int blkaddr = block->addr;
+	irq_handler_t flt_fn;
 	int i, ret;
 
 	for (i = CPT_10K_AF_INT_VEC_FLT0; i < CPT_10K_AF_INT_VEC_RVU; i++) {
 		sprintf(&rvu->irq_name[(off + i) * NAME_SIZE], "CPTAF FLT%d", i);
+
+		switch (i) {
+		case CPT_10K_AF_INT_VEC_FLT0:
+			flt_fn = rvu_cpt_af_flt0_intr_handler;
+			break;
+		case CPT_10K_AF_INT_VEC_FLT1:
+			flt_fn = rvu_cpt_af_flt1_intr_handler;
+			break;
+		case CPT_10K_AF_INT_VEC_FLT2:
+			flt_fn = rvu_cpt_af_flt2_intr_handler;
+			break;
+		}
 		ret = rvu_cpt_do_register_interrupt(block, off + i,
-						    rvu_cpt_af_flt_intr_handler,
-						    &rvu->irq_name[(off + i) * NAME_SIZE]);
+						    flt_fn, &rvu->irq_name[(off + i) * NAME_SIZE]);
 		if (ret)
 			goto err;
-		rvu_write64(rvu, blkaddr, CPT_AF_FLTX_INT_ENA_W1S(i), 0x1);
+		if (i == CPT_10K_AF_INT_VEC_FLT2)
+			rvu_write64(rvu, blkaddr, CPT_AF_FLTX_INT_ENA_W1S(i), 0xFFFF);
+		else
+			rvu_write64(rvu, blkaddr, CPT_AF_FLTX_INT_ENA_W1S(i), ~0ULL);
 	}
 
 	ret = rvu_cpt_do_register_interrupt(block, off + CPT_10K_AF_INT_VEC_RVU,
@@ -208,6 +251,7 @@ static int cpt_register_interrupts(struct rvu *rvu, int blkaddr)
 {
 	struct rvu_hwinfo *hw = rvu->hw;
 	struct rvu_block *block;
+	irq_handler_t flt_fn;
 	int i, offs, ret = 0;
 
 	if (!is_block_implemented(rvu->hw, blkaddr))
@@ -226,12 +270,19 @@ static int cpt_register_interrupts(struct rvu *rvu, int blkaddr)
 
 	for (i = CPT_AF_INT_VEC_FLT0; i < CPT_AF_INT_VEC_RVU; i++) {
 		sprintf(&rvu->irq_name[(offs + i) * NAME_SIZE], "CPTAF FLT%d", i);
+		switch (i) {
+		case CPT_AF_INT_VEC_FLT0:
+			flt_fn = rvu_cpt_af_flt0_intr_handler;
+			break;
+		case CPT_AF_INT_VEC_FLT1:
+			flt_fn = rvu_cpt_af_flt1_intr_handler;
+			break;
+		}
 		ret = rvu_cpt_do_register_interrupt(block, offs + i,
-						    rvu_cpt_af_flt_intr_handler,
-						    &rvu->irq_name[(offs + i) * NAME_SIZE]);
+						    flt_fn, &rvu->irq_name[(offs + i) * NAME_SIZE]);
 		if (ret)
 			goto err;
-		rvu_write64(rvu, blkaddr, CPT_AF_FLTX_INT_ENA_W1S(i), 0x1);
+		rvu_write64(rvu, blkaddr, CPT_AF_FLTX_INT_ENA_W1S(i), ~0ULL);
 	}
 
 	ret = rvu_cpt_do_register_interrupt(block, offs + CPT_AF_INT_VEC_RVU,
-- 
2.25.1

[PATCH net-next,3/9] octeontx2-af: add mbox for CPT LF reset

[Srujana Challa]

Adds a new mailbox to reset a requested CPT LF.

Signed-off-by: Srujana Challa <schalla@marvell.com>
---
 .../net/ethernet/marvell/octeontx2/af/mbox.h  |  8 +++++
 .../ethernet/marvell/octeontx2/af/rvu_cpt.c   | 33 +++++++++++++++++++
 2 files changed, 41 insertions(+)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
index d2584ebb7a70..b121e3d9f561 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
@@ -195,6 +195,7 @@ M(CPT_STATS,            0xA05, cpt_sts, cpt_sts_req, cpt_sts_rsp)	\
 M(CPT_RXC_TIME_CFG,     0xA06, cpt_rxc_time_cfg, cpt_rxc_time_cfg_req,  \
 			       msg_rsp)                                 \
 M(CPT_CTX_CACHE_SYNC,   0xA07, cpt_ctx_cache_sync, msg_req, msg_rsp)    \
+M(CPT_LF_RESET,         0xA08, cpt_lf_reset, cpt_lf_rst_req, msg_rsp)	\
 /* SDP mbox IDs (range 0x1000 - 0x11FF) */				\
 M(SET_SDP_CHAN_INFO, 0x1000, set_sdp_chan_info, sdp_chan_info_msg, msg_rsp) \
 M(GET_SDP_CHAN_INFO, 0x1001, get_sdp_chan_info, msg_req, sdp_get_chan_info_msg) \
@@ -1692,6 +1693,13 @@ struct cpt_inst_lmtst_req {
 	u64 rsvd;
 };
 
+/* Mailbox message format to request for CPT LF reset */
+struct cpt_lf_rst_req {
+	struct mbox_msghdr hdr;
+	u32 slot;
+	u32 rsvd;
+};
+
 struct sdp_node_info {
 	/* Node to which this PF belons to */
 	u8 node_id;
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c
index 1ed16ce515bb..1cd34914cb86 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c
@@ -851,6 +851,39 @@ int rvu_mbox_handler_cpt_ctx_cache_sync(struct rvu *rvu, struct msg_req *req,
 	return rvu_cpt_ctx_flush(rvu, req->hdr.pcifunc);
 }
 
+int rvu_mbox_handler_cpt_lf_reset(struct rvu *rvu, struct cpt_lf_rst_req *req,
+				  struct msg_rsp *rsp)
+{
+	u16 pcifunc = req->hdr.pcifunc;
+	struct rvu_block *block;
+	int cptlf, blkaddr, ret;
+	u16 actual_slot;
+	u64 ctl, ctl2;
+
+	blkaddr = rvu_get_blkaddr_from_slot(rvu, BLKTYPE_CPT, pcifunc,
+					    req->slot, &actual_slot);
+	if (blkaddr < 0)
+		return CPT_AF_ERR_LF_INVALID;
+
+	block = &rvu->hw->block[blkaddr];
+
+	cptlf = rvu_get_lf(rvu, block, pcifunc, actual_slot);
+	if (cptlf < 0)
+		return CPT_AF_ERR_LF_INVALID;
+	ctl = rvu_read64(rvu, blkaddr, CPT_AF_LFX_CTL(cptlf));
+	ctl2 = rvu_read64(rvu, blkaddr, CPT_AF_LFX_CTL2(cptlf));
+
+	ret = rvu_lf_reset(rvu, block, cptlf);
+	if (ret)
+		dev_err(rvu->dev, "Failed to reset blkaddr %d LF%d\n",
+			block->addr, cptlf);
+
+	rvu_write64(rvu, blkaddr, CPT_AF_LFX_CTL(cptlf), ctl);
+	rvu_write64(rvu, blkaddr, CPT_AF_LFX_CTL2(cptlf), ctl2);
+
+	return 0;
+}
+
 static void cpt_rxc_teardown(struct rvu *rvu, int blkaddr)
 {
 	struct cpt_rxc_time_cfg_req req;
-- 
2.25.1

[PATCH net-next,4/9] octeontx2-af: modify FLR sequence for CPT

[Srujana Challa]

The existing FLR sequence mentioned in HRM requires a dummy LMTST to CPT
but LMTST can't be submitted through BAR2 ALIAS registers. So, HW team
provided a new sequence to avoid dummy LMTST. This patch adds code for
the same.

Signed-off-by: Srujana Challa <schalla@marvell.com>
---
 .../net/ethernet/marvell/octeontx2/af/rvu.h   | 12 +++
 .../ethernet/marvell/octeontx2/af/rvu_cpt.c   | 86 +++++++++----------
 .../ethernet/marvell/octeontx2/af/rvu_reg.h   |  2 +
 3 files changed, 53 insertions(+), 47 deletions(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
index 7f0a64731c67..20c75d7c962e 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
@@ -459,6 +459,7 @@ struct rvu {
 	struct rvu_pfvf		*pf;
 	struct rvu_pfvf		*hwvf;
 	struct mutex		rsrc_lock; /* Serialize resource alloc/free */
+	struct mutex		alias_lock; /* Serialize bar2 alias access */
 	int			vfs; /* Number of VFs attached to RVU */
 	int			nix_blkaddr[MAX_NIX_BLKS];
 
@@ -546,6 +547,17 @@ static inline u64 rvupf_read64(struct rvu *rvu, u64 offset)
 	return readq(rvu->pfreg_base + offset);
 }
 
+static inline void rvu_bar2_sel_write64(struct rvu *rvu, u64 block, u64 offset, u64 val)
+{
+	/* HW requires read back of RVU_AF_BAR2_SEL register to make sure completion of
+	 * write operation.
+	 */
+	rvu_write64(rvu, block, offset, val);
+	rvu_read64(rvu, block, offset);
+	/* Barrier to ensure read completes before accessing LF registers */
+	mb();
+}
+
 /* Silicon revisions */
 static inline bool is_rvu_pre_96xx_C0(struct rvu *rvu)
 {
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c
index 1cd34914cb86..e8973294c4f8 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c
@@ -930,68 +930,63 @@ static void cpt_rxc_teardown(struct rvu *rvu, int blkaddr)
 		dev_warn(rvu->dev, "Poll for RXC zombie count hits hard loop counter\n");
 }
 
-#define INPROG_INFLIGHT(reg)    ((reg) & 0x1FF)
-#define INPROG_GRB_PARTIAL(reg) ((reg) & BIT_ULL(31))
-#define INPROG_GRB(reg)         (((reg) >> 32) & 0xFF)
-#define INPROG_GWB(reg)         (((reg) >> 40) & 0xFF)
+#define INFLIGHT   GENMASK_ULL(8, 0)
+#define GRB_CNT    GENMASK_ULL(39, 32)
+#define GWB_CNT    GENMASK_ULL(47, 40)
+#define XQ_XOR     GENMASK_ULL(63, 63)
+#define DQPTR      GENMASK_ULL(19, 0)
+#define NQPTR      GENMASK_ULL(51, 32)
 
 static void cpt_lf_disable_iqueue(struct rvu *rvu, int blkaddr, int slot)
 {
-	int i = 0, hard_lp_ctr = 100000;
-	u64 inprog, grp_ptr;
-	u16 nq_ptr, dq_ptr;
+	int timeout = 1000000;
+	u64 inprog, inst_ptr;
+	u64 qsize, pending;
+	int i = 0;
 
 	/* Disable instructions enqueuing */
 	rvu_write64(rvu, blkaddr, CPT_AF_BAR2_ALIASX(slot, CPT_LF_CTL), 0x0);
 
-	/* Disable executions in the LF's queue */
 	inprog = rvu_read64(rvu, blkaddr,
 			    CPT_AF_BAR2_ALIASX(slot, CPT_LF_INPROG));
-	inprog &= ~BIT_ULL(16);
+	inprog |= BIT_ULL(16);
 	rvu_write64(rvu, blkaddr,
 		    CPT_AF_BAR2_ALIASX(slot, CPT_LF_INPROG), inprog);
 
-	/* Wait for CPT queue to become execution-quiescent */
+	qsize = rvu_read64(rvu, blkaddr,
+			   CPT_AF_BAR2_ALIASX(slot, CPT_LF_Q_SIZE)) & 0x7FFF;
 	do {
-		inprog = rvu_read64(rvu, blkaddr,
-				    CPT_AF_BAR2_ALIASX(slot, CPT_LF_INPROG));
-		if (INPROG_GRB_PARTIAL(inprog)) {
-			i = 0;
-			hard_lp_ctr--;
-		} else {
-			i++;
-		}
-
-		grp_ptr = rvu_read64(rvu, blkaddr,
-				     CPT_AF_BAR2_ALIASX(slot,
-							CPT_LF_Q_GRP_PTR));
-		nq_ptr = (grp_ptr >> 32) & 0x7FFF;
-		dq_ptr = grp_ptr & 0x7FFF;
-
-	} while (hard_lp_ctr && (i < 10) && (nq_ptr != dq_ptr));
+		inst_ptr = rvu_read64(rvu, blkaddr,
+				      CPT_AF_BAR2_ALIASX(slot, CPT_LF_Q_INST_PTR));
+		pending = (FIELD_GET(XQ_XOR, inst_ptr) * qsize * 40) +
+			  FIELD_GET(NQPTR, inst_ptr) -
+			  FIELD_GET(DQPTR, inst_ptr);
+		udelay(1);
+		timeout--;
+	} while ((pending != 0) && (timeout != 0));
 
-	if (hard_lp_ctr == 0)
-		dev_warn(rvu->dev, "CPT FLR hits hard loop counter\n");
+	if (timeout == 0)
+		dev_warn(rvu->dev, "TIMEOUT: CPT poll on pending instructions\n");
 
-	i = 0;
-	hard_lp_ctr = 100000;
+	timeout = 1000000;
+	/* Wait for CPT queue to become execution-quiescent */
 	do {
 		inprog = rvu_read64(rvu, blkaddr,
 				    CPT_AF_BAR2_ALIASX(slot, CPT_LF_INPROG));
 
-		if ((INPROG_INFLIGHT(inprog) == 0) &&
-		    (INPROG_GWB(inprog) < 40) &&
-		    ((INPROG_GRB(inprog) == 0) ||
-		     (INPROG_GRB((inprog)) == 40))) {
+		if ((FIELD_GET(INFLIGHT, inprog) == 0) &&
+		    (FIELD_GET(GRB_CNT, inprog) == 0)) {
 			i++;
 		} else {
 			i = 0;
-			hard_lp_ctr--;
+			timeout--;
 		}
-	} while (hard_lp_ctr && (i < 10));
+	} while ((timeout != 0) && (i < 10));
 
-	if (hard_lp_ctr == 0)
-		dev_warn(rvu->dev, "CPT FLR hits hard loop counter\n");
+	if (timeout == 0)
+		dev_warn(rvu->dev, "TIMEOUT: CPT poll on inflight count\n");
+	/* Wait for 2 us to flush all queue writes to memory */
+	udelay(2);
 }
 
 int rvu_cpt_lf_teardown(struct rvu *rvu, u16 pcifunc, int blkaddr, int lf, int slot)
@@ -1001,18 +996,15 @@ int rvu_cpt_lf_teardown(struct rvu *rvu, u16 pcifunc, int blkaddr, int lf, int s
 	if (is_cpt_pf(rvu, pcifunc) || is_cpt_vf(rvu, pcifunc))
 		cpt_rxc_teardown(rvu, blkaddr);
 
+	mutex_lock(&rvu->alias_lock);
 	/* Enable BAR2 ALIAS for this pcifunc. */
 	reg = BIT_ULL(16) | pcifunc;
-	rvu_write64(rvu, blkaddr, CPT_AF_BAR2_SEL, reg);
+	rvu_bar2_sel_write64(rvu, blkaddr, CPT_AF_BAR2_SEL, reg);
 
 	cpt_lf_disable_iqueue(rvu, blkaddr, slot);
 
-	/* Set group drop to help clear out hardware */
-	reg = rvu_read64(rvu, blkaddr, CPT_AF_BAR2_ALIASX(slot, CPT_LF_INPROG));
-	reg |= BIT_ULL(17);
-	rvu_write64(rvu, blkaddr, CPT_AF_BAR2_ALIASX(slot, CPT_LF_INPROG), reg);
-
-	rvu_write64(rvu, blkaddr, CPT_AF_BAR2_SEL, 0);
+	rvu_bar2_sel_write64(rvu, blkaddr, CPT_AF_BAR2_SEL, 0);
+	mutex_unlock(&rvu->alias_lock);
 
 	return 0;
 }
@@ -1147,7 +1139,7 @@ int rvu_cpt_ctx_flush(struct rvu *rvu, u16 pcifunc)
 
 	/* Enable BAR2 ALIAS for this pcifunc. */
 	reg = BIT_ULL(16) | pcifunc;
-	rvu_write64(rvu, blkaddr, CPT_AF_BAR2_SEL, reg);
+	rvu_bar2_sel_write64(rvu, blkaddr, CPT_AF_BAR2_SEL, reg);
 
 	for (i = 0; i < max_ctx_entries; i++) {
 		cam_data = rvu_read64(rvu, blkaddr, CPT_AF_CTX_CAM_DATA(i));
@@ -1160,7 +1152,7 @@ int rvu_cpt_ctx_flush(struct rvu *rvu, u16 pcifunc)
 				    reg);
 		}
 	}
-	rvu_write64(rvu, blkaddr, CPT_AF_BAR2_SEL, 0);
+	rvu_bar2_sel_write64(rvu, blkaddr, CPT_AF_BAR2_SEL, 0);
 
 unlock:
 	mutex_unlock(&rvu->rsrc_lock);
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_reg.h b/drivers/net/ethernet/marvell/octeontx2/af/rvu_reg.h
index 0e0d536645ac..5437bd20c719 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_reg.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_reg.h
@@ -545,6 +545,8 @@
 
 #define CPT_LF_CTL                      0x10
 #define CPT_LF_INPROG                   0x40
+#define CPT_LF_Q_SIZE                   0x100
+#define CPT_LF_Q_INST_PTR               0x110
 #define CPT_LF_Q_GRP_PTR                0x120
 #define CPT_LF_CTX_FLUSH                0x510
 
-- 
2.25.1

[PATCH net-next,5/9] octeontx2-af: optimize cpt pf identification

[Srujana Challa]

Optimize CPT PF identification in mbox handling for faster
mbox response by doing it at AF driver probe instead of
every mbox message.

Signed-off-by: Srujana Challa <schalla@marvell.com>
---
 drivers/net/ethernet/marvell/octeontx2/af/rvu.c     |  8 ++++++++
 drivers/net/ethernet/marvell/octeontx2/af/rvu.h     |  2 ++
 drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c | 13 ++++++++++---
 3 files changed, 20 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu.c
index 3f5e09b77d4b..8683ce57ed3f 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.c
@@ -1164,8 +1164,16 @@ static int rvu_setup_hw_resources(struct rvu *rvu)
 		goto nix_err;
 	}
 
+	err = rvu_cpt_init(rvu);
+	if (err) {
+		dev_err(rvu->dev, "%s: Failed to initialize cpt\n", __func__);
+		goto mcs_err;
+	}
+
 	return 0;
 
+mcs_err:
+	rvu_mcs_exit(rvu);
 nix_err:
 	rvu_nix_freemem(rvu);
 npa_err:
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
index 20c75d7c962e..2f480c73ef55 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
@@ -511,6 +511,7 @@ struct rvu {
 	struct ptp		*ptp;
 
 	int			mcs_blk_cnt;
+	int			cpt_pf_num;
 
 #ifdef CONFIG_DEBUG_FS
 	struct rvu_debugfs	rvu_dbg;
@@ -877,6 +878,7 @@ void rvu_cpt_unregister_interrupts(struct rvu *rvu);
 int rvu_cpt_lf_teardown(struct rvu *rvu, u16 pcifunc, int blkaddr, int lf,
 			int slot);
 int rvu_cpt_ctx_flush(struct rvu *rvu, u16 pcifunc);
+int rvu_cpt_init(struct rvu *rvu);
 
 /* CN10K RVU */
 int rvu_set_channels_base(struct rvu *rvu);
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c
index e8973294c4f8..f970cb9b0bff 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c
@@ -340,7 +340,7 @@ static int get_cpt_pf_num(struct rvu *rvu)
 
 static bool is_cpt_pf(struct rvu *rvu, u16 pcifunc)
 {
-	int cpt_pf_num = get_cpt_pf_num(rvu);
+	int cpt_pf_num = rvu->cpt_pf_num;
 
 	if (rvu_get_pf(pcifunc) != cpt_pf_num)
 		return false;
@@ -352,7 +352,7 @@ static bool is_cpt_pf(struct rvu *rvu, u16 pcifunc)
 
 static bool is_cpt_vf(struct rvu *rvu, u16 pcifunc)
 {
-	int cpt_pf_num = get_cpt_pf_num(rvu);
+	int cpt_pf_num = rvu->cpt_pf_num;
 
 	if (rvu_get_pf(pcifunc) != cpt_pf_num)
 		return false;
@@ -1015,7 +1015,7 @@ int rvu_cpt_lf_teardown(struct rvu *rvu, u16 pcifunc, int blkaddr, int lf, int s
 static int cpt_inline_inb_lf_cmd_send(struct rvu *rvu, int blkaddr,
 				      int nix_blkaddr)
 {
-	int cpt_pf_num = get_cpt_pf_num(rvu);
+	int cpt_pf_num = rvu->cpt_pf_num;
 	struct cpt_inst_lmtst_req *req;
 	dma_addr_t res_daddr;
 	int timeout = 3000;
@@ -1159,3 +1159,10 @@ int rvu_cpt_ctx_flush(struct rvu *rvu, u16 pcifunc)
 
 	return 0;
 }
+
+int rvu_cpt_init(struct rvu *rvu)
+{
+	/* Retrieve CPT PF number */
+	rvu->cpt_pf_num = get_cpt_pf_num(rvu);
+	return 0;
+}
-- 
2.25.1

[PATCH net-next,6/9] octeontx2-af: restore rxc conf after teardown sequence

[Srujana Challa]

From: Nithin Dabilpuram <ndabilpuram@marvell.com>

Restore rxc timeout and threshold config after teardown
sequence is complete as it is global config and not
per CPT LF.

Signed-off-by: Nithin Dabilpuram <ndabilpuram@marvell.com>
---
 .../ethernet/marvell/octeontx2/af/rvu_cpt.c   | 22 +++++++++++++++----
 1 file changed, 18 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c
index f970cb9b0bff..302ff549284e 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c
@@ -812,10 +812,21 @@ int rvu_mbox_handler_cpt_sts(struct rvu *rvu, struct cpt_sts_req *req,
 #define RXC_ZOMBIE_COUNT  GENMASK_ULL(60, 48)
 
 static void cpt_rxc_time_cfg(struct rvu *rvu, struct cpt_rxc_time_cfg_req *req,
-			     int blkaddr)
+			     int blkaddr, struct cpt_rxc_time_cfg_req *save)
 {
 	u64 dfrg_reg;
 
+	if (save) {
+		/* Save older config */
+		dfrg_reg = rvu_read64(rvu, blkaddr, CPT_AF_RXC_DFRG);
+		save->zombie_thres = FIELD_GET(RXC_ZOMBIE_THRES, dfrg_reg);
+		save->zombie_limit = FIELD_GET(RXC_ZOMBIE_LIMIT, dfrg_reg);
+		save->active_thres = FIELD_GET(RXC_ACTIVE_THRES, dfrg_reg);
+		save->active_limit = FIELD_GET(RXC_ACTIVE_LIMIT, dfrg_reg);
+
+		save->step = rvu_read64(rvu, blkaddr, CPT_AF_RXC_TIME_CFG);
+	}
+
 	dfrg_reg = FIELD_PREP(RXC_ZOMBIE_THRES, req->zombie_thres);
 	dfrg_reg |= FIELD_PREP(RXC_ZOMBIE_LIMIT, req->zombie_limit);
 	dfrg_reg |= FIELD_PREP(RXC_ACTIVE_THRES, req->active_thres);
@@ -840,7 +851,7 @@ int rvu_mbox_handler_cpt_rxc_time_cfg(struct rvu *rvu,
 	    !is_cpt_vf(rvu, req->hdr.pcifunc))
 		return CPT_AF_ERR_ACCESS_DENIED;
 
-	cpt_rxc_time_cfg(rvu, req, blkaddr);
+	cpt_rxc_time_cfg(rvu, req, blkaddr, NULL);
 
 	return 0;
 }
@@ -886,7 +897,7 @@ int rvu_mbox_handler_cpt_lf_reset(struct rvu *rvu, struct cpt_lf_rst_req *req,
 
 static void cpt_rxc_teardown(struct rvu *rvu, int blkaddr)
 {
-	struct cpt_rxc_time_cfg_req req;
+	struct cpt_rxc_time_cfg_req req, prev;
 	int timeout = 2000;
 	u64 reg;
 
@@ -902,7 +913,7 @@ static void cpt_rxc_teardown(struct rvu *rvu, int blkaddr)
 	req.active_thres = 1;
 	req.active_limit = 1;
 
-	cpt_rxc_time_cfg(rvu, &req, blkaddr);
+	cpt_rxc_time_cfg(rvu, &req, blkaddr, &prev);
 
 	do {
 		reg = rvu_read64(rvu, blkaddr, CPT_AF_RXC_ACTIVE_STS);
@@ -928,6 +939,9 @@ static void cpt_rxc_teardown(struct rvu *rvu, int blkaddr)
 
 	if (timeout == 0)
 		dev_warn(rvu->dev, "Poll for RXC zombie count hits hard loop counter\n");
+
+	/* Restore config */
+	cpt_rxc_time_cfg(rvu, &prev, blkaddr, NULL);
 }
 
 #define INFLIGHT   GENMASK_ULL(8, 0)
-- 
2.25.1

[PATCH net-next,7/9] octeontx2-af: update CPT inbound inline IPsec config mailbox

[Srujana Challa]

Updates CPT inbound inline IPsec configure mailbox to take
CPT credit, opcode, credit_th and bpid from VF.
This patch also adds a mailbox to read inbound IPsec
configuration.

Signed-off-by: Srujana Challa <schalla@marvell.com>
---
 .../net/ethernet/marvell/octeontx2/af/mbox.h  |  6 ++-
 .../ethernet/marvell/octeontx2/af/rvu_nix.c   | 46 +++++++++++++++++--
 2 files changed, 47 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
index b121e3d9f561..9eac73bfc9cb 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
@@ -298,6 +298,8 @@ M(NIX_BANDPROF_FREE,	0x801e, nix_bandprof_free, nix_bandprof_free_req,   \
 				msg_rsp)				    \
 M(NIX_BANDPROF_GET_HWINFO, 0x801f, nix_bandprof_get_hwinfo, msg_req,		\
 				nix_bandprof_get_hwinfo_rsp)		    \
+M(NIX_READ_INLINE_IPSEC_CFG, 0x8023, nix_read_inline_ipsec_cfg,		\
+				msg_req, nix_inline_ipsec_cfg)		\
 /* MCS mbox IDs (range 0xA000 - 0xBFFF) */					\
 M(MCS_ALLOC_RESOURCES,	0xa000, mcs_alloc_resources, mcs_alloc_rsrc_req,	\
 				mcs_alloc_rsrc_rsp)				\
@@ -1197,7 +1199,7 @@ struct nix_inline_ipsec_cfg {
 	u32 cpt_credit;
 	struct {
 		u8 egrp;
-		u8 opcode;
+		u16 opcode;
 		u16 param1;
 		u16 param2;
 	} gen_cfg;
@@ -1206,6 +1208,8 @@ struct nix_inline_ipsec_cfg {
 		u8 cpt_slot;
 	} inst_qsel;
 	u8 enable;
+	u16 bpid;
+	u32 credit_th;
 };
 
 /* Per NIX LF inline IPSec configuration */
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
index 6b8747ebc08c..89e94569e74c 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
@@ -4731,6 +4731,10 @@ int rvu_mbox_handler_nix_lso_format_cfg(struct rvu *rvu,
 #define CPT_INST_QSEL_PF_FUNC GENMASK_ULL(23, 8)
 #define CPT_INST_QSEL_SLOT    GENMASK_ULL(7, 0)
 
+#define CPT_INST_CREDIT_TH    GENMASK_ULL(53, 32)
+#define CPT_INST_CREDIT_BPID  GENMASK_ULL(30, 22)
+#define CPT_INST_CREDIT_CNT   GENMASK_ULL(21, 0)
+
 static void nix_inline_ipsec_cfg(struct rvu *rvu, struct nix_inline_ipsec_cfg *req,
 				 int blkaddr)
 {
@@ -4767,14 +4771,23 @@ static void nix_inline_ipsec_cfg(struct rvu *rvu, struct nix_inline_ipsec_cfg *r
 			    val);
 
 		/* Set CPT credit */
-		rvu_write64(rvu, blkaddr, NIX_AF_RX_CPTX_CREDIT(cpt_idx),
-			    req->cpt_credit);
+		val = rvu_read64(rvu, blkaddr, NIX_AF_RX_CPTX_CREDIT(cpt_idx));
+		if ((val & 0x3FFFFF) != 0x3FFFFF)
+			rvu_write64(rvu, blkaddr, NIX_AF_RX_CPTX_CREDIT(cpt_idx),
+				    0x3FFFFF - val);
+
+		val = FIELD_PREP(CPT_INST_CREDIT_CNT, req->cpt_credit);
+		val |= FIELD_PREP(CPT_INST_CREDIT_BPID, req->bpid);
+		val |= FIELD_PREP(CPT_INST_CREDIT_TH, req->credit_th);
+		rvu_write64(rvu, blkaddr, NIX_AF_RX_CPTX_CREDIT(cpt_idx), val);
 	} else {
 		rvu_write64(rvu, blkaddr, NIX_AF_RX_IPSEC_GEN_CFG, 0x0);
 		rvu_write64(rvu, blkaddr, NIX_AF_RX_CPTX_INST_QSEL(cpt_idx),
 			    0x0);
-		rvu_write64(rvu, blkaddr, NIX_AF_RX_CPTX_CREDIT(cpt_idx),
-			    0x3FFFFF);
+		val = rvu_read64(rvu, blkaddr, NIX_AF_RX_CPTX_CREDIT(cpt_idx));
+		if ((val & 0x3FFFFF) != 0x3FFFFF)
+			rvu_write64(rvu, blkaddr, NIX_AF_RX_CPTX_CREDIT(cpt_idx),
+				    0x3FFFFF - val);
 	}
 }
 
@@ -4792,6 +4805,30 @@ int rvu_mbox_handler_nix_inline_ipsec_cfg(struct rvu *rvu,
 	return 0;
 }
 
+int rvu_mbox_handler_nix_read_inline_ipsec_cfg(struct rvu *rvu,
+					       struct msg_req *req,
+					       struct nix_inline_ipsec_cfg *rsp)
+
+{
+	u64 val;
+
+	if (!is_block_implemented(rvu->hw, BLKADDR_CPT0))
+		return 0;
+
+	val = rvu_read64(rvu, BLKADDR_NIX0, NIX_AF_RX_IPSEC_GEN_CFG);
+	rsp->gen_cfg.egrp = FIELD_GET(IPSEC_GEN_CFG_EGRP, val);
+	rsp->gen_cfg.opcode = FIELD_GET(IPSEC_GEN_CFG_OPCODE, val);
+	rsp->gen_cfg.param1 = FIELD_GET(IPSEC_GEN_CFG_PARAM1, val);
+	rsp->gen_cfg.param2 = FIELD_GET(IPSEC_GEN_CFG_PARAM2, val);
+
+	val = rvu_read64(rvu, BLKADDR_NIX0, NIX_AF_RX_CPTX_CREDIT(0));
+	rsp->cpt_credit = FIELD_GET(CPT_INST_CREDIT_CNT, val);
+	rsp->credit_th = FIELD_GET(CPT_INST_CREDIT_TH, val);
+	rsp->bpid = FIELD_GET(CPT_INST_CREDIT_BPID, val);
+
+	return 0;
+}
+
 int rvu_mbox_handler_nix_inline_ipsec_lf_cfg(struct rvu *rvu,
 					     struct nix_inline_ipsec_lf_cfg *req,
 					     struct msg_rsp *rsp)
@@ -4835,6 +4872,7 @@ int rvu_mbox_handler_nix_inline_ipsec_lf_cfg(struct rvu *rvu,
 
 	return 0;
 }
+
 void rvu_nix_reset_mac(struct rvu_pfvf *pfvf, int pcifunc)
 {
 	bool from_vf = !!(pcifunc & RVU_PFVF_FUNC_MASK);
-- 
2.25.1

[PATCH net-next,8/9] octeontx2-af: add ctx ilen to cpt lf alloc mailbox

[Srujana Challa]

Adds ctx_ilen to CPT_LF_ALLOC mailbox to provide
the provison to user to give CPT_AF_LFX_CTL:ctx_ilen.

Signed-off-by: Srujana Challa <schalla@marvell.com>
---
 drivers/net/ethernet/marvell/octeontx2/af/mbox.h    |  2 ++
 drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c | 10 +++++++---
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
index 9eac73bfc9cb..abe86778b064 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
@@ -1614,6 +1614,8 @@ struct cpt_lf_alloc_req_msg {
 	u16 sso_pf_func;
 	u16 eng_grpmsk;
 	int blkaddr;
+	u8 ctx_ilen_valid : 1;
+	u8 ctx_ilen : 7;
 };
 
 #define CPT_INLINE_INBOUND      0
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c
index 302ff549284e..d7ca7e953683 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c
@@ -17,7 +17,7 @@
 #define	PCI_DEVID_OTX2_CPT10K_PF 0xA0F2
 
 /* Length of initial context fetch in 128 byte words */
-#define CPT_CTX_ILEN    2ULL
+#define CPT_CTX_ILEN    1ULL
 
 #define cpt_get_eng_sts(e_min, e_max, rsp, etype)                   \
 ({                                                                  \
@@ -421,8 +421,12 @@ int rvu_mbox_handler_cpt_lf_alloc(struct rvu *rvu,
 
 		/* Set CPT LF group and priority */
 		val = (u64)req->eng_grpmsk << 48 | 1;
-		if (!is_rvu_otx2(rvu))
-			val |= (CPT_CTX_ILEN << 17);
+		if (!is_rvu_otx2(rvu)) {
+			if (req->ctx_ilen_valid)
+				val |= (req->ctx_ilen << 17);
+			else
+				val |= (CPT_CTX_ILEN << 17);
+		}
 
 		rvu_write64(rvu, blkaddr, CPT_AF_LFX_CTL(cptlf), val);
 
-- 
2.25.1

[PATCH net-next,9/9] octeontx2-af: add mbox to return CPT_AF_FLT_INT info

[Srujana Challa]

Adds a new mailbox to return CPT faulted engines bitmap
and recovered engines bitmap.

Signed-off-by: Srujana Challa <schalla@marvell.com>
---
 .../net/ethernet/marvell/octeontx2/af/mbox.h  | 17 ++++++++++
 .../net/ethernet/marvell/octeontx2/af/rvu.h   |  4 +++
 .../ethernet/marvell/octeontx2/af/rvu_cpt.c   | 34 +++++++++++++++++++
 3 files changed, 55 insertions(+)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
index abe86778b064..5727d67e0259 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
@@ -196,6 +196,8 @@ M(CPT_RXC_TIME_CFG,     0xA06, cpt_rxc_time_cfg, cpt_rxc_time_cfg_req,  \
 			       msg_rsp)                                 \
 M(CPT_CTX_CACHE_SYNC,   0xA07, cpt_ctx_cache_sync, msg_req, msg_rsp)    \
 M(CPT_LF_RESET,         0xA08, cpt_lf_reset, cpt_lf_rst_req, msg_rsp)	\
+M(CPT_FLT_ENG_INFO,     0xA09, cpt_flt_eng_info, cpt_flt_eng_info_req,	\
+			       cpt_flt_eng_info_rsp)			\
 /* SDP mbox IDs (range 0x1000 - 0x11FF) */				\
 M(SET_SDP_CHAN_INFO, 0x1000, set_sdp_chan_info, sdp_chan_info_msg, msg_rsp) \
 M(GET_SDP_CHAN_INFO, 0x1001, get_sdp_chan_info, msg_req, sdp_get_chan_info_msg) \
@@ -1706,6 +1708,21 @@ struct cpt_lf_rst_req {
 	u32 rsvd;
 };
 
+/* Mailbox message format to request for CPT faulted engines */
+struct cpt_flt_eng_info_req {
+	struct mbox_msghdr hdr;
+	int blkaddr;
+	bool reset;
+	u32 rsvd;
+};
+
+struct cpt_flt_eng_info_rsp {
+	struct mbox_msghdr hdr;
+	u64 flt_eng_map[CPT_10K_AF_INT_VEC_RVU];
+	u64 rcvrd_eng_map[CPT_10K_AF_INT_VEC_RVU];
+	u64 rsvd;
+};
+
 struct sdp_node_info {
 	/* Node to which this PF belons to */
 	u8 node_id;
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
index 2f480c73ef55..5eea2b6cf6bd 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
@@ -108,6 +108,8 @@ struct rvu_block {
 	u64  lfreset_reg;
 	unsigned char name[NAME_SIZE];
 	struct rvu *rvu;
+	u64 cpt_flt_eng_map[3];
+	u64 cpt_rcvrd_eng_map[3];
 };
 
 struct nix_mcast {
@@ -526,6 +528,8 @@ struct rvu {
 	struct list_head	mcs_intrq_head;
 	/* mcs interrupt queue lock */
 	spinlock_t		mcs_intrq_lock;
+	/* CPT interrupt lock */
+	spinlock_t		cpt_intr_lock;
 };
 
 static inline void rvu_write64(struct rvu *rvu, u64 block, u64 offset, u64 val)
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c
index d7ca7e953683..7cc1efa603ce 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c
@@ -70,6 +70,13 @@ static irqreturn_t cpt_af_flt_intr_handler(int vec, void *ptr)
 
 		rvu_write64(rvu, blkaddr, CPT_AF_EXEX_CTL2(eng), grp);
 		rvu_write64(rvu, blkaddr, CPT_AF_EXEX_CTL(eng), val | 1ULL);
+
+		spin_lock(&rvu->cpt_intr_lock);
+		block->cpt_flt_eng_map[vec] |= BIT_ULL(i);
+		val = rvu_read64(rvu, blkaddr, CPT_AF_EXEX_STS(eng));
+		if ((val & 0x2) || (!(val & 0x2) && (val & 0x1)))
+			block->cpt_rcvrd_eng_map[vec] |= BIT_ULL(i);
+		spin_unlock(&rvu->cpt_intr_lock);
 	}
 	rvu_write64(rvu, blkaddr, CPT_AF_FLTX_INT(vec), reg);
 
@@ -899,6 +906,31 @@ int rvu_mbox_handler_cpt_lf_reset(struct rvu *rvu, struct cpt_lf_rst_req *req,
 	return 0;
 }
 
+int rvu_mbox_handler_cpt_flt_eng_info(struct rvu *rvu, struct cpt_flt_eng_info_req *req,
+				      struct cpt_flt_eng_info_rsp *rsp)
+{
+	struct rvu_block *block;
+	unsigned long flags;
+	int blkaddr, vec;
+
+	blkaddr = validate_and_get_cpt_blkaddr(req->blkaddr);
+	if (blkaddr < 0)
+		return blkaddr;
+
+	block = &rvu->hw->block[blkaddr];
+	for (vec = 0; vec < CPT_10K_AF_INT_VEC_RVU; vec++) {
+		spin_lock_irqsave(&rvu->cpt_intr_lock, flags);
+		rsp->flt_eng_map[vec] = block->cpt_flt_eng_map[vec];
+		rsp->rcvrd_eng_map[vec] = block->cpt_rcvrd_eng_map[vec];
+		if (req->reset) {
+			block->cpt_flt_eng_map[vec] = 0x0;
+			block->cpt_rcvrd_eng_map[vec] = 0x0;
+		}
+		spin_unlock_irqrestore(&rvu->cpt_intr_lock, flags);
+	}
+	return 0;
+}
+
 static void cpt_rxc_teardown(struct rvu *rvu, int blkaddr)
 {
 	struct cpt_rxc_time_cfg_req req, prev;
@@ -1182,5 +1214,7 @@ int rvu_cpt_init(struct rvu *rvu)
 {
 	/* Retrieve CPT PF number */
 	rvu->cpt_pf_num = get_cpt_pf_num(rvu);
+	spin_lock_init(&rvu->cpt_intr_lock);
+
 	return 0;
 }
-- 
2.25.1