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Message-Id: <20200713122640.4155-2-rakeshs.lkm@gmail.com>
Date: Mon, 13 Jul 2020 17:56:39 +0530
From: rakeshs.lkm@...il.com
To: sbhatta@...vell.com, sgoutham@...vell.com, jerinj@...vell.com,
rsaladi2@...vell.com, davem@...emloft.net, kuba@...nel.org,
linux-kernel@...r.kernel.org
Cc: Sunil Kovvuri Goutham <Sunil.Goutham@...ium.com>
Subject: [net-next PATCH 1/2] octeontx2-af: add npa error af interrupt handlers
From: Jerin Jacob <jerinj@...vell.com>
Added debug messages for NPA NPA_AF_RVU_INT, NPA_AF_GEN_INT, NPA_AF_ERR_INT
and NPA_AF_RAS error AF interrupts
Signed-off-by: Jerin Jacob <jerinj@...vell.com>
Signed-off-by: Sunil Kovvuri Goutham <Sunil.Goutham@...ium.com>
Signed-off-by: Rakesh Babu <rsaladi2@...vell.com>
Signed-off-by: Subbaraya Sundeep <sbhatta@...vell.com>
---
.../net/ethernet/marvell/octeontx2/af/rvu.c | 7 +
.../net/ethernet/marvell/octeontx2/af/rvu.h | 2 +
.../ethernet/marvell/octeontx2/af/rvu_npa.c | 230 ++++++++++++++++++
.../marvell/octeontx2/af/rvu_struct.h | 23 ++
4 files changed, 262 insertions(+)
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu.c
index 557e4292c846..6c4027f04cfc 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.c
@@ -2130,6 +2130,8 @@ static void rvu_unregister_interrupts(struct rvu *rvu)
{
int irq;
+ rvu_npa_unregister_interrupts(rvu);
+
/* Disable the Mbox interrupt */
rvu_write64(rvu, BLKADDR_RVUM, RVU_AF_PFAF_MBOX_INT_ENA_W1C,
INTR_MASK(rvu->hw->total_pfs) & ~1ULL);
@@ -2337,6 +2339,11 @@ static int rvu_register_interrupts(struct rvu *rvu)
goto fail;
}
rvu->irq_allocated[offset] = true;
+
+ ret = rvu_npa_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 dcf25a092008..63c9f6049ad5 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
@@ -453,6 +453,8 @@ void rvu_npa_freemem(struct rvu *rvu);
void rvu_npa_lf_teardown(struct rvu *rvu, u16 pcifunc, int npalf);
int rvu_npa_aq_enq_inst(struct rvu *rvu, struct npa_aq_enq_req *req,
struct npa_aq_enq_rsp *rsp);
+int rvu_npa_register_interrupts(struct rvu *rvu);
+void rvu_npa_unregister_interrupts(struct rvu *rvu);
/* NIX APIs */
bool is_nixlf_attached(struct rvu *rvu, u16 pcifunc);
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npa.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npa.c
index 67471cb2b129..2476d20280cb 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npa.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npa.c
@@ -8,8 +8,10 @@
* published by the Free Software Foundation.
*/
+#include <linux/bitfield.h>
#include <linux/module.h>
#include <linux/pci.h>
+#include <linux/stringify.h>
#include "rvu_struct.h"
#include "rvu_reg.h"
@@ -541,3 +543,231 @@ void rvu_npa_lf_teardown(struct rvu *rvu, u16 pcifunc, int npalf)
npa_ctx_free(rvu, pfvf);
}
+
+static irqreturn_t rvu_npa_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_NPA, 0);
+ if (blkaddr < 0)
+ return IRQ_NONE;
+
+ intr = rvu_read64(rvu, blkaddr, NPA_AF_RVU_INT);
+
+ if (intr & BIT_ULL(0))
+ dev_err(rvu->dev, "NPA: Unmapped slot error\n");
+
+ /* Clear interrupts */
+ rvu_write64(rvu, blkaddr, NPA_AF_RVU_INT, intr);
+ return IRQ_HANDLED;
+}
+
+static const char *rvu_npa_inpq_to_str(u16 in)
+{
+ switch (in) {
+ case 0:
+ return NULL;
+ case BIT(NPA_INPQ_NIX0_RX):
+ return __stringify(NPA_INPQ_NIX0_RX);
+ case BIT(NPA_INPQ_NIX0_TX):
+ return __stringify(NPA_INPQ_NIX0_TX);
+ case BIT(NPA_INPQ_NIX1_RX):
+ return __stringify(NPA_INPQ_NIX1_RX);
+ case BIT(NPA_INPQ_NIX1_TX):
+ return __stringify(NPA_INPQ_NIX1_TX);
+ case BIT(NPA_INPQ_SSO):
+ return __stringify(NPA_INPQ_SSO);
+ case BIT(NPA_INPQ_TIM):
+ return __stringify(NPA_INPQ_TIM);
+ case BIT(NPA_INPQ_DPI):
+ return __stringify(NPA_INPQ_DPI);
+ case BIT(NPA_INPQ_AURA_OP):
+ return __stringify(NPA_INPQ_AURA_OP);
+ case BIT(NPA_INPQ_INTERNAL_RSV):
+ return __stringify(NPA_INPQ_INTERNAL_RSV);
+ }
+
+ return "Reserved";
+}
+
+static irqreturn_t rvu_npa_af_gen_intr_handler(int irq, void *rvu_irq)
+{
+ struct rvu *rvu = (struct rvu *)rvu_irq;
+ const char *err_msg;
+ int blkaddr, val;
+ u64 intr;
+
+ blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPA, 0);
+ if (blkaddr < 0)
+ return IRQ_NONE;
+
+ intr = rvu_read64(rvu, blkaddr, NPA_AF_GEN_INT);
+
+ if (intr & BIT_ULL(32))
+ dev_err(rvu->dev, "NPA: Unmapped PF func error\n");
+
+ val = FIELD_GET(GENMASK(31, 16), intr);
+ err_msg = rvu_npa_inpq_to_str(val);
+ if (err_msg)
+ dev_err(rvu->dev, "NPA: Alloc disabled for %s\n", err_msg);
+
+ val = FIELD_GET(GENMASK(15, 0), intr);
+ err_msg = rvu_npa_inpq_to_str(val);
+ if (err_msg)
+ dev_err(rvu->dev, "NPA: Free disabled for %s\n", err_msg);
+
+ /* Clear interrupts */
+ rvu_write64(rvu, blkaddr, NPA_AF_GEN_INT, intr);
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t rvu_npa_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_NPA, 0);
+ if (blkaddr < 0)
+ return IRQ_NONE;
+
+ intr = rvu_read64(rvu, blkaddr, NPA_AF_ERR_INT);
+
+ if (intr & BIT_ULL(14))
+ dev_err(rvu->dev, "NPA: Memory fault on NPA_AQ_INST_S read\n");
+
+ if (intr & BIT_ULL(13))
+ dev_err(rvu->dev, "NPA: Memory fault on NPA_AQ_RES_S write\n");
+
+ if (intr & BIT_ULL(12))
+ dev_err(rvu->dev, "NPA: AQ doorbell error\n");
+
+ /* Clear interrupts */
+ rvu_write64(rvu, blkaddr, NPA_AF_ERR_INT, intr);
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t rvu_npa_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_NPA, 0);
+ if (blkaddr < 0)
+ return IRQ_NONE;
+
+ intr = rvu_read64(rvu, blkaddr, NPA_AF_RAS);
+
+ if (intr & BIT_ULL(34))
+ dev_err(rvu->dev, "NPA: Poisoned data on NPA_AQ_INST_S read\n");
+
+ if (intr & BIT_ULL(33))
+ dev_err(rvu->dev, "NPA: Poisoned data on NPA_AQ_RES_S write\n");
+
+ if (intr & BIT_ULL(32))
+ dev_err(rvu->dev, "NPA: Poisoned data on HW context read\n");
+
+ /* Clear interrupts */
+ rvu_write64(rvu, blkaddr, NPA_AF_RAS, intr);
+ return IRQ_HANDLED;
+}
+
+static bool rvu_npa_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_npa_register_interrupts(struct rvu *rvu)
+{
+ int blkaddr, base;
+ bool rc;
+
+ blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPA, 0);
+ if (blkaddr < 0)
+ return blkaddr;
+
+ /* Get NPA AF MSIX vectors offset. */
+ base = rvu_read64(rvu, blkaddr, NPA_PRIV_AF_INT_CFG) & 0x3ff;
+ if (!base) {
+ dev_warn(rvu->dev,
+ "Failed to get NPA_AF_INT vector offsets\n");
+ return 0;
+ }
+
+ /* Register and enable NPA_AF_RVU_INT interrupt */
+ rc = rvu_npa_af_request_irq(rvu, blkaddr, base + NPA_AF_INT_VEC_RVU,
+ "NPA_AF_RVU_INT",
+ rvu_npa_af_rvu_intr_handler);
+ if (!rc)
+ goto err;
+ rvu_write64(rvu, blkaddr, NPA_AF_RVU_INT_ENA_W1S, ~0ULL);
+
+ /* Register and enable NPA_AF_GEN_INT interrupt */
+ rc = rvu_npa_af_request_irq(rvu, blkaddr, base + NPA_AF_INT_VEC_GEN,
+ "NPA_AF_RVU_GEN",
+ rvu_npa_af_gen_intr_handler);
+ if (!rc)
+ goto err;
+ rvu_write64(rvu, blkaddr, NPA_AF_GEN_INT_ENA_W1S, ~0ULL);
+
+ /* Register and enable NPA_AF_ERR_INT interrupt */
+ rc = rvu_npa_af_request_irq(rvu, blkaddr, base + NPA_AF_INT_VEC_AF_ERR,
+ "NPA_AF_ERR_INT",
+ rvu_npa_af_err_intr_handler);
+ if (!rc)
+ goto err;
+ rvu_write64(rvu, blkaddr, NPA_AF_ERR_INT_ENA_W1S, ~0ULL);
+
+ /* Register and enable NPA_AF_RAS interrupt */
+ rc = rvu_npa_af_request_irq(rvu, blkaddr, base + NPA_AF_INT_VEC_POISON,
+ "NPA_AF_RAS",
+ rvu_npa_af_ras_intr_handler);
+ if (!rc)
+ goto err;
+ rvu_write64(rvu, blkaddr, NPA_AF_RAS_ENA_W1S, ~0ULL);
+
+ return 0;
+err:
+ rvu_npa_unregister_interrupts(rvu);
+ return rc;
+}
+
+void rvu_npa_unregister_interrupts(struct rvu *rvu)
+{
+ int i, offs, blkaddr;
+ u64 reg;
+
+ blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPA, 0);
+ if (blkaddr < 0)
+ return;
+
+ reg = rvu_read64(rvu, blkaddr, NPA_PRIV_AF_INT_CFG);
+ offs = reg & 0x3FF;
+
+ rvu_write64(rvu, blkaddr, NPA_AF_RVU_INT_ENA_W1C, ~0ULL);
+ rvu_write64(rvu, blkaddr, NPA_AF_GEN_INT_ENA_W1C, ~0ULL);
+ rvu_write64(rvu, blkaddr, NPA_AF_ERR_INT_ENA_W1C, ~0ULL);
+ rvu_write64(rvu, blkaddr, NPA_AF_RAS_ENA_W1C, ~0ULL);
+
+ for (i = 0; i < NPA_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 a3ecb5de9000..bf5f03aeb5f0 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_struct.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_struct.h
@@ -60,6 +60,16 @@ enum rvu_af_int_vec_e {
RVU_AF_INT_VEC_CNT = 0x5,
};
+/* NPA Admin function Interrupt Vector Enumeration */
+enum npa_af_int_vec_e {
+ NPA_AF_INT_VEC_RVU = 0x0,
+ NPA_AF_INT_VEC_GEN = 0x1,
+ NPA_AF_INT_VEC_AQ_DONE = 0x2,
+ NPA_AF_INT_VEC_AF_ERR = 0x3,
+ NPA_AF_INT_VEC_POISON = 0x4,
+ NPA_AF_INT_VEC_CNT = 0x5,
+};
+
/**
* RVU PF Interrupt Vector Enumeration
*/
@@ -100,6 +110,19 @@ enum npa_aq_instop {
NPA_AQ_INSTOP_UNLOCK = 0x5,
};
+/* ALLOC/FREE input queues Enumeration from coprocessors */
+enum npa_inpq {
+ NPA_INPQ_NIX0_RX = 0x0,
+ NPA_INPQ_NIX0_TX = 0x1,
+ NPA_INPQ_NIX1_RX = 0x2,
+ NPA_INPQ_NIX1_TX = 0x3,
+ NPA_INPQ_SSO = 0x4,
+ NPA_INPQ_TIM = 0x5,
+ NPA_INPQ_DPI = 0x6,
+ NPA_INPQ_AURA_OP = 0xe,
+ NPA_INPQ_INTERNAL_RSV = 0xf,
+};
+
/* NPA admin queue instruction structure */
struct npa_aq_inst_s {
#if defined(__BIG_ENDIAN_BITFIELD)
--
2.17.1
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