[net-next PATCH 2/2] octeontx2-af: add nix error af interrupt handlers

From: rakeshs . lkm
Date: Mon Jul 13 2020 - 08:29:08 EST

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From: Jerin Jacob <jerinj@xxxxxxxxxxx>

Added debug messages for NIX_AF_RVU_INT, NIX_AF_ERR_INT and NIX_AF_RAS
error AF interrupts.

Signed-off-by: Jerin Jacob <jerinj@xxxxxxxxxxx>
Signed-off-by: Sunil Kovvuri Goutham <Sunil.Goutham@xxxxxxxxxx>
Signed-off-by: Rakesh Babu <rsaladi2@xxxxxxxxxxx>
Signed-off-by: Subbaraya Sundeep <sbhatta@xxxxxxxxxxx>
---
.../net/ethernet/marvell/octeontx2/af/rvu.c | 5 +
.../net/ethernet/marvell/octeontx2/af/rvu.h | 2 +
.../ethernet/marvell/octeontx2/af/rvu_nix.c | 202 ++++++++++++++++++
.../marvell/octeontx2/af/rvu_struct.h | 10 +
4 files changed, 219 insertions(+)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu.c
index 6c4027f04cfc..9a36ce5fc57a 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.c
@@ -2131,6 +2131,7 @@ static void rvu_unregister_interrupts(struct rvu *rvu)
int irq;

rvu_npa_unregister_interrupts(rvu);
+ rvu_nix_unregister_interrupts(rvu);

/* Disable the Mbox interrupt */
rvu_write64(rvu, BLKADDR_RVUM, RVU_AF_PFAF_MBOX_INT_ENA_W1C,
@@ -2344,6 +2345,10 @@ static int rvu_register_interrupts(struct rvu *rvu)
if (ret)
goto fail;

+ ret = rvu_nix_register_interrupts(rvu);
+ if (ret)
+ goto fail;
+
return 0;

fail:
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
index 63c9f6049ad5..44d25a8f598d 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
@@ -465,6 +465,8 @@ void rvu_nix_freemem(struct rvu *rvu);
int rvu_get_nixlf_count(struct rvu *rvu);
void rvu_nix_lf_teardown(struct rvu *rvu, u16 pcifunc, int blkaddr, int npalf);
int nix_get_nixlf(struct rvu *rvu, u16 pcifunc, int *nixlf, int *nix_blkaddr);
+int rvu_nix_register_interrupts(struct rvu *rvu);
+void rvu_nix_unregister_interrupts(struct rvu *rvu);

/* NPC APIs */
int rvu_npc_init(struct rvu *rvu);
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
index 36953d4f51c7..99bf7003bd2d 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
@@ -3369,3 +3369,205 @@ int rvu_mbox_handler_nix_lso_format_cfg(struct rvu *rvu,

return 0;
}
+
+static irqreturn_t rvu_nix_af_rvu_intr_handler(int irq, void *rvu_irq)
+{
+ struct rvu *rvu = (struct rvu *)rvu_irq;
+ int blkaddr;
+ u64 intr;
+
+ blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, 0);
+ if (blkaddr < 0)
+ return IRQ_NONE;
+
+ intr = rvu_read64(rvu, blkaddr, NIX_AF_RVU_INT);
+
+ if (intr & BIT_ULL(0))
+ dev_err(rvu->dev, "NIX: Unmapped slot error\n");
+
+ /* Clear interrupts */
+ rvu_write64(rvu, blkaddr, NIX_AF_RVU_INT, intr);
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t rvu_nix_af_err_intr_handler(int irq, void *rvu_irq)
+{
+ struct rvu *rvu = (struct rvu *)rvu_irq;
+ int blkaddr;
+ u64 intr;
+
+ blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, 0);
+ if (blkaddr < 0)
+ return IRQ_NONE;
+
+ intr = rvu_read64(rvu, blkaddr, NIX_AF_ERR_INT);
+
+ if (intr & BIT_ULL(14))
+ dev_err(rvu->dev, "NIX: Memory fault on NIX_AQ_INST_S read\n");
+
+ if (intr & BIT_ULL(13))
+ dev_err(rvu->dev, "NIX: Memory fault on NIX_AQ_RES_S write\n");
+
+ if (intr & BIT_ULL(12))
+ dev_err(rvu->dev, "NIX: AQ doorbell error\n");
+
+ if (intr & BIT_ULL(6))
+ dev_err(rvu->dev, "NIX: Rx on unmapped PF_FUNC\n");
+
+ if (intr & BIT_ULL(5))
+ dev_err(rvu->dev, "NIX: Rx multicast replication error\n");
+
+ if (intr & BIT_ULL(4))
+ dev_err(rvu->dev, "NIX: Memory fault on NIX_RX_MCE_S read\n");
+
+ if (intr & BIT_ULL(3))
+ dev_err(rvu->dev, "NIX: Memory fault on multicast WQE read\n");
+
+ if (intr & BIT_ULL(2))
+ dev_err(rvu->dev, "NIX: Memory fault on mirror WQE read\n");
+
+ if (intr & BIT_ULL(1))
+ dev_err(rvu->dev, "NIX: Memory fault on mirror pkt write\n");
+
+ if (intr & BIT_ULL(0))
+ dev_err(rvu->dev, "NIX: Memory fault on multicast pkt write\n");
+
+ /* Clear interrupts */
+ rvu_write64(rvu, blkaddr, NIX_AF_ERR_INT, intr);
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t rvu_nix_af_ras_intr_handler(int irq, void *rvu_irq)
+{
+ struct rvu *rvu = (struct rvu *)rvu_irq;
+ int blkaddr;
+ u64 intr;
+
+ blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, 0);
+ if (blkaddr < 0)
+ return IRQ_NONE;
+
+ intr = rvu_read64(rvu, blkaddr, NIX_AF_RAS);
+
+ if (intr & BIT_ULL(34))
+ dev_err(rvu->dev, "NIX: Poisoned data on NIX_AQ_INST_S read\n");
+
+ if (intr & BIT_ULL(33))
+ dev_err(rvu->dev, "NIX: Poisoned data on NIX_AQ_RES_S write\n");
+
+ if (intr & BIT_ULL(32))
+ dev_err(rvu->dev, "NIX: Poisoned data on HW context read\n");
+
+ if (intr & BIT_ULL(4))
+ dev_err(rvu->dev, "NIX: Poisoned data on packet read from mirror buffer\n");
+
+ if (intr & BIT_ULL(3))
+ dev_err(rvu->dev, "NIX: Poisoned data on packet read from multicast buffer\n");
+
+ if (intr & BIT_ULL(2))
+ dev_err(rvu->dev, "NIX: Poisoned data on WQE read from mirror buffer\n");
+
+ if (intr & BIT_ULL(1))
+ dev_err(rvu->dev, "NIX: Poisoned data on WQE read from multicast buffer\n");
+
+ if (intr & BIT_ULL(0))
+ dev_err(rvu->dev, "NIX: Poisoned data on NIX_RX_MCE_S read\n");
+
+ /* Clear interrupts */
+ rvu_write64(rvu, blkaddr, NIX_AF_RAS, intr);
+ return IRQ_HANDLED;
+}
+
+static bool rvu_nix_af_request_irq(struct rvu *rvu, int blkaddr, int offset,
+ const char *name, irq_handler_t fn)
+{
+ int rc;
+
+ WARN_ON(rvu->irq_allocated[offset]);
+ rvu->irq_allocated[offset] = false;
+ sprintf(&rvu->irq_name[offset * NAME_SIZE], name);
+ rc = request_irq(pci_irq_vector(rvu->pdev, offset), fn, 0,
+ &rvu->irq_name[offset * NAME_SIZE], rvu);
+ if (rc)
+ dev_warn(rvu->dev, "Failed to register %s irq\n", name);
+ else
+ rvu->irq_allocated[offset] = true;
+
+ return rvu->irq_allocated[offset];
+}
+
+int rvu_nix_register_interrupts(struct rvu *rvu)
+{
+ int blkaddr, base;
+ bool rc;
+
+ blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, 0);
+ if (blkaddr < 0)
+ return blkaddr;
+
+ /* Get NIX AF MSIX vectors offset. */
+ base = rvu_read64(rvu, blkaddr, NIX_PRIV_AF_INT_CFG) & 0x3ff;
+ if (!base) {
+ dev_warn(rvu->dev,
+ "Failed to get NIX_AF_INT vector offsets\n");
+ return 0;
+ }
+
+ /* Register and enable NIX_AF_RVU_INT interrupt */
+ rc = rvu_nix_af_request_irq(rvu, blkaddr, base + NIX_AF_INT_VEC_RVU,
+ "NIX_AF_RVU_INT",
+ rvu_nix_af_rvu_intr_handler);
+ if (!rc)
+ goto err;
+ rvu_write64(rvu, blkaddr, NIX_AF_RVU_INT_ENA_W1S, ~0ULL);
+
+ /* Register and enable NIX_AF_ERR_INT interrupt */
+ rc = rvu_nix_af_request_irq(rvu, blkaddr, base + NIX_AF_INT_VEC_AF_ERR,
+ "NIX_AF_ERR_INT",
+ rvu_nix_af_err_intr_handler);
+ if (!rc)
+ goto err;
+ rvu_write64(rvu, blkaddr, NIX_AF_ERR_INT_ENA_W1S, ~0ULL);
+
+ /* Register and enable NIX_AF_RAS interrupt */
+ rc = rvu_nix_af_request_irq(rvu, blkaddr, base + NIX_AF_INT_VEC_POISON,
+ "NIX_AF_RAS",
+ rvu_nix_af_ras_intr_handler);
+ if (!rc)
+ goto err;
+ rvu_write64(rvu, blkaddr, NIX_AF_RAS_ENA_W1S, ~0ULL);
+
+ return 0;
+err:
+ rvu_nix_unregister_interrupts(rvu);
+ return rc;
+}
+
+void rvu_nix_unregister_interrupts(struct rvu *rvu)
+{
+ int blkaddr, offs, i;
+
+ blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, 0);
+ if (blkaddr < 0)
+ return;
+
+ offs = rvu_read64(rvu, blkaddr, NIX_PRIV_AF_INT_CFG) & 0x3ff;
+ if (!offs)
+ return;
+
+ rvu_write64(rvu, blkaddr, NIX_AF_RVU_INT_ENA_W1C, ~0ULL);
+ rvu_write64(rvu, blkaddr, NIX_AF_ERR_INT_ENA_W1C, ~0ULL);
+ rvu_write64(rvu, blkaddr, NIX_AF_RAS_ENA_W1C, ~0ULL);
+
+ if (rvu->irq_allocated[offs + NIX_AF_INT_VEC_RVU]) {
+ free_irq(pci_irq_vector(rvu->pdev, offs + NIX_AF_INT_VEC_RVU),
+ rvu);
+ rvu->irq_allocated[offs + NIX_AF_INT_VEC_RVU] = false;
+ }
+
+ for (i = NIX_AF_INT_VEC_AF_ERR; i < NIX_AF_INT_VEC_CNT; i++)
+ if (rvu->irq_allocated[offs + i]) {
+ free_irq(pci_irq_vector(rvu->pdev, offs + i), rvu);
+ rvu->irq_allocated[offs + i] = false;
+ }
+}
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_struct.h b/drivers/net/ethernet/marvell/octeontx2/af/rvu_struct.h
index bf5f03aeb5f0..a665fa242926 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_struct.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_struct.h
@@ -70,6 +70,16 @@ 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
*/
--
2.17.1

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Previous message: rakeshs . lkm: "[net-next PATCH 1/2] octeontx2-af: add npa error af interrupt handlers"
In reply to: rakeshs . lkm: "[net-next PATCH 1/2] octeontx2-af: add npa error af interrupt handlers"
Next in thread: David Miller: "Re: [net-next PATCH 0/2] Interrupt handler support for NPA and NIX in"
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