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Message-ID: <20211011100043.1657733-2-schalla@marvell.com>
Date: Mon, 11 Oct 2021 15:30:41 +0530
From: Srujana Challa <schalla@...vell.com>
To: <davem@...emloft.net>, <kuba@...nel.org>, <netdev@...r.kernel.org>
CC: <sgoutham@...vell.com>, <lcherian@...vell.com>,
<gakula@...vell.com>, <hkelam@...vell.com>, <jerinj@...vell.com>,
<sbhatta@...vell.com>, <schalla@...vell.com>
Subject: [PATCH net-next 1/3] octeontx2-af: Enable CPT HW interrupts
This patch enables and registers interrupt handler for CPT HW
interrupts.
Signed-off-by: Srujana Challa <schalla@...vell.com>
---
.../net/ethernet/marvell/octeontx2/af/rvu.c | 13 +
.../net/ethernet/marvell/octeontx2/af/rvu.h | 3 +
.../ethernet/marvell/octeontx2/af/rvu_cpt.c | 228 ++++++++++++++++++
.../marvell/octeontx2/af/rvu_struct.h | 18 ++
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 4cb24e91e648..7487434c0405 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.c
@@ -854,6 +854,7 @@ static int rvu_setup_nix_hw_resource(struct rvu *rvu, int blkaddr)
block->lfcfg_reg = NIX_PRIV_LFX_CFG;
block->msixcfg_reg = NIX_PRIV_LFX_INT_CFG;
block->lfreset_reg = NIX_AF_LF_RST;
+ block->rvu = rvu;
sprintf(block->name, "NIX%d", blkid);
rvu->nix_blkaddr[blkid] = blkaddr;
return rvu_alloc_bitmap(&block->lf);
@@ -883,6 +884,7 @@ static int rvu_setup_cpt_hw_resource(struct rvu *rvu, int blkaddr)
block->lfcfg_reg = CPT_PRIV_LFX_CFG;
block->msixcfg_reg = CPT_PRIV_LFX_INT_CFG;
block->lfreset_reg = CPT_AF_LF_RST;
+ block->rvu = rvu;
sprintf(block->name, "CPT%d", blkid);
return rvu_alloc_bitmap(&block->lf);
}
@@ -940,6 +942,7 @@ static int rvu_setup_hw_resources(struct rvu *rvu)
block->lfcfg_reg = NPA_PRIV_LFX_CFG;
block->msixcfg_reg = NPA_PRIV_LFX_INT_CFG;
block->lfreset_reg = NPA_AF_LF_RST;
+ block->rvu = rvu;
sprintf(block->name, "NPA");
err = rvu_alloc_bitmap(&block->lf);
if (err) {
@@ -979,6 +982,7 @@ static int rvu_setup_hw_resources(struct rvu *rvu)
block->lfcfg_reg = SSO_PRIV_LFX_HWGRP_CFG;
block->msixcfg_reg = SSO_PRIV_LFX_HWGRP_INT_CFG;
block->lfreset_reg = SSO_AF_LF_HWGRP_RST;
+ block->rvu = rvu;
sprintf(block->name, "SSO GROUP");
err = rvu_alloc_bitmap(&block->lf);
if (err) {
@@ -1003,6 +1007,7 @@ static int rvu_setup_hw_resources(struct rvu *rvu)
block->lfcfg_reg = SSOW_PRIV_LFX_HWS_CFG;
block->msixcfg_reg = SSOW_PRIV_LFX_HWS_INT_CFG;
block->lfreset_reg = SSOW_AF_LF_HWS_RST;
+ block->rvu = rvu;
sprintf(block->name, "SSOWS");
err = rvu_alloc_bitmap(&block->lf);
if (err) {
@@ -1028,6 +1033,7 @@ static int rvu_setup_hw_resources(struct rvu *rvu)
block->lfcfg_reg = TIM_PRIV_LFX_CFG;
block->msixcfg_reg = TIM_PRIV_LFX_INT_CFG;
block->lfreset_reg = TIM_AF_LF_RST;
+ block->rvu = rvu;
sprintf(block->name, "TIM");
err = rvu_alloc_bitmap(&block->lf);
if (err) {
@@ -2725,6 +2731,8 @@ static void rvu_unregister_interrupts(struct rvu *rvu)
{
int irq;
+ rvu_cpt_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);
@@ -2934,6 +2942,11 @@ static int rvu_register_interrupts(struct rvu *rvu)
goto fail;
}
rvu->irq_allocated[offset] = true;
+
+ ret = rvu_cpt_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 58b166698fa5..cdbd2846127d 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
@@ -101,6 +101,7 @@ struct rvu_block {
u64 msixcfg_reg;
u64 lfreset_reg;
unsigned char name[NAME_SIZE];
+ struct rvu *rvu;
};
struct nix_mcast {
@@ -812,6 +813,8 @@ bool is_mcam_entry_enabled(struct rvu *rvu, struct npc_mcam *mcam, int blkaddr,
int index);
/* CPT APIs */
+int rvu_cpt_register_interrupts(struct rvu *rvu);
+void rvu_cpt_unregister_interrupts(struct rvu *rvu);
int rvu_cpt_lf_teardown(struct rvu *rvu, u16 pcifunc, int lf, int slot);
/* CN10K RVU */
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c
index 267d092b8e97..a59a2f17026f 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c
@@ -37,6 +37,234 @@
(_rsp)->free_sts_##etype = free_sts; \
})
+static irqreturn_t rvu_cpt_af_flt_intr_handler(int irq, 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);
+ }
+
+ rvu_write64(rvu, blkaddr, CPT_AF_FLTX_INT(0), reg0);
+ rvu_write64(rvu, blkaddr, CPT_AF_FLTX_INT(1), reg1);
+ rvu_write64(rvu, blkaddr, CPT_AF_FLTX_INT(2), reg2);
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t rvu_cpt_af_rvu_intr_handler(int irq, void *ptr)
+{
+ struct rvu_block *block = ptr;
+ struct rvu *rvu = block->rvu;
+ int blkaddr = block->addr;
+ u64 reg;
+
+ reg = rvu_read64(rvu, blkaddr, CPT_AF_RVU_INT);
+ dev_err_ratelimited(rvu->dev, "Received CPTAF RVU irq : 0x%llx", reg);
+
+ rvu_write64(rvu, blkaddr, CPT_AF_RVU_INT, reg);
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t rvu_cpt_af_ras_intr_handler(int irq, void *ptr)
+{
+ struct rvu_block *block = ptr;
+ struct rvu *rvu = block->rvu;
+ int blkaddr = block->addr;
+ u64 reg;
+
+ reg = rvu_read64(rvu, blkaddr, CPT_AF_RAS_INT);
+ dev_err_ratelimited(rvu->dev, "Received CPTAF RAS irq : 0x%llx", reg);
+
+ rvu_write64(rvu, blkaddr, CPT_AF_RAS_INT, reg);
+ return IRQ_HANDLED;
+}
+
+static int rvu_cpt_do_register_interrupt(struct rvu_block *block, int irq_offs,
+ irq_handler_t handler,
+ const char *name)
+{
+ struct rvu *rvu = block->rvu;
+ int ret;
+
+ ret = request_irq(pci_irq_vector(rvu->pdev, irq_offs), handler, 0,
+ name, block);
+ if (ret) {
+ dev_err(rvu->dev, "RVUAF: %s irq registration failed", name);
+ return ret;
+ }
+
+ WARN_ON(rvu->irq_allocated[irq_offs]);
+ rvu->irq_allocated[irq_offs] = true;
+ return 0;
+}
+
+static void cpt_10k_unregister_interrupts(struct rvu_block *block, int off)
+{
+ struct rvu *rvu = block->rvu;
+ int blkaddr = block->addr;
+ 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_RVU_INT_ENA_W1C, 0x1);
+ rvu_write64(rvu, blkaddr, CPT_AF_RAS_INT_ENA_W1C, 0x1);
+
+ for (i = 0; i < CPT_10K_AF_INT_VEC_CNT; i++)
+ if (rvu->irq_allocated[off + i]) {
+ free_irq(pci_irq_vector(rvu->pdev, off + i), block);
+ rvu->irq_allocated[off + i] = false;
+ }
+}
+
+static void cpt_unregister_interrupts(struct rvu *rvu, int blkaddr)
+{
+ struct rvu_hwinfo *hw = rvu->hw;
+ struct rvu_block *block;
+ int i, offs;
+
+ if (!is_block_implemented(rvu->hw, blkaddr))
+ return;
+ offs = rvu_read64(rvu, blkaddr, CPT_PRIV_AF_INT_CFG) & 0x7FF;
+ if (!offs) {
+ dev_warn(rvu->dev,
+ "Failed to get CPT_AF_INT vector offsets\n");
+ return;
+ }
+ block = &hw->block[blkaddr];
+ if (!is_rvu_otx2(rvu))
+ return cpt_10k_unregister_interrupts(block, offs);
+
+ /* 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_RVU_INT_ENA_W1C, 0x1);
+ rvu_write64(rvu, blkaddr, CPT_AF_RAS_INT_ENA_W1C, 0x1);
+
+ for (i = 0; i < CPT_AF_INT_VEC_CNT; i++)
+ if (rvu->irq_allocated[offs + i]) {
+ free_irq(pci_irq_vector(rvu->pdev, offs + i), block);
+ rvu->irq_allocated[offs + i] = false;
+ }
+}
+
+void rvu_cpt_unregister_interrupts(struct rvu *rvu)
+{
+ cpt_unregister_interrupts(rvu, BLKADDR_CPT0);
+ cpt_unregister_interrupts(rvu, BLKADDR_CPT1);
+}
+
+static int cpt_10k_register_interrupts(struct rvu_block *block, int off)
+{
+ struct rvu *rvu = block->rvu;
+ int blkaddr = block->addr;
+ char irq_name[16];
+ int i, ret;
+
+ for (i = CPT_10K_AF_INT_VEC_FLT0; i < CPT_10K_AF_INT_VEC_RVU; i++) {
+ snprintf(irq_name, sizeof(irq_name), "CPTAF FLT%d", i);
+ ret = rvu_cpt_do_register_interrupt(block, off + i,
+ rvu_cpt_af_flt_intr_handler,
+ irq_name);
+ if (ret)
+ goto err;
+ rvu_write64(rvu, blkaddr, CPT_AF_FLTX_INT_ENA_W1S(i), 0x1);
+ }
+
+ ret = rvu_cpt_do_register_interrupt(block, off + CPT_10K_AF_INT_VEC_RVU,
+ rvu_cpt_af_rvu_intr_handler,
+ "CPTAF RVU");
+ if (ret)
+ goto err;
+ rvu_write64(rvu, blkaddr, CPT_AF_RVU_INT_ENA_W1S, 0x1);
+
+ ret = rvu_cpt_do_register_interrupt(block, off + CPT_10K_AF_INT_VEC_RAS,
+ rvu_cpt_af_ras_intr_handler,
+ "CPTAF RAS");
+ if (ret)
+ goto err;
+ rvu_write64(rvu, blkaddr, CPT_AF_RAS_INT_ENA_W1S, 0x1);
+
+ return 0;
+err:
+ rvu_cpt_unregister_interrupts(rvu);
+ return ret;
+}
+
+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;
+
+ block = &hw->block[blkaddr];
+ offs = rvu_read64(rvu, blkaddr, CPT_PRIV_AF_INT_CFG) & 0x7FF;
+ if (!offs) {
+ dev_warn(rvu->dev,
+ "Failed to get CPT_AF_INT vector offsets\n");
+ return 0;
+ }
+
+ if (!is_rvu_otx2(rvu))
+ 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);
+ ret = rvu_cpt_do_register_interrupt(block, offs + i,
+ rvu_cpt_af_flt_intr_handler,
+ irq_name);
+ if (ret)
+ goto err;
+ rvu_write64(rvu, blkaddr, CPT_AF_FLTX_INT_ENA_W1S(i), 0x1);
+ }
+
+ ret = rvu_cpt_do_register_interrupt(block, offs + CPT_AF_INT_VEC_RVU,
+ rvu_cpt_af_rvu_intr_handler,
+ "CPTAF RVU");
+ if (ret)
+ goto err;
+ rvu_write64(rvu, blkaddr, CPT_AF_RVU_INT_ENA_W1S, 0x1);
+
+ ret = rvu_cpt_do_register_interrupt(block, offs + CPT_AF_INT_VEC_RAS,
+ rvu_cpt_af_ras_intr_handler,
+ "CPTAF RAS");
+ if (ret)
+ goto err;
+ rvu_write64(rvu, blkaddr, CPT_AF_RAS_INT_ENA_W1S, 0x1);
+
+ return 0;
+err:
+ rvu_cpt_unregister_interrupts(rvu);
+ return ret;
+}
+
+int rvu_cpt_register_interrupts(struct rvu *rvu)
+{
+ int ret;
+
+ ret = cpt_register_interrupts(rvu, BLKADDR_CPT0);
+ if (ret)
+ return ret;
+
+ return cpt_register_interrupts(rvu, BLKADDR_CPT1);
+}
+
static int get_cpt_pf_num(struct rvu *rvu)
{
int i, domain_nr, cpt_pf_num = -1;
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_struct.h b/drivers/net/ethernet/marvell/octeontx2/af/rvu_struct.h
index 77ac96693f04..edc9367b1b95 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_struct.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_struct.h
@@ -62,6 +62,24 @@ enum rvu_af_int_vec_e {
RVU_AF_INT_VEC_CNT = 0x5,
};
+/* CPT Admin function Interrupt Vector Enumeration */
+enum cpt_af_int_vec_e {
+ CPT_AF_INT_VEC_FLT0 = 0x0,
+ CPT_AF_INT_VEC_FLT1 = 0x1,
+ CPT_AF_INT_VEC_RVU = 0x2,
+ CPT_AF_INT_VEC_RAS = 0x3,
+ CPT_AF_INT_VEC_CNT = 0x4,
+};
+
+enum cpt_10k_af_int_vec_e {
+ CPT_10K_AF_INT_VEC_FLT0 = 0x0,
+ CPT_10K_AF_INT_VEC_FLT1 = 0x1,
+ CPT_10K_AF_INT_VEC_FLT2 = 0x2,
+ CPT_10K_AF_INT_VEC_RVU = 0x3,
+ CPT_10K_AF_INT_VEC_RAS = 0x4,
+ CPT_10K_AF_INT_VEC_CNT = 0x5,
+};
+
/* NPA Admin function Interrupt Vector Enumeration */
enum npa_af_int_vec_e {
NPA_AF_INT_VEC_RVU = 0x0,
--
2.25.1
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