octeontx2-af: NPA block LF initialization

Upon receiving NPA_LF_ALLOC mbox message allocate memory for
NPALF's aura, pool and qint contexts and configure the same
to HW. Enable caching of contexts into NPA NDC.

Return pool related info like stack size, num pointers per
stack page e.t.c to the mbox msg sender.

Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 135 insertions, 2 deletions

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npa.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npa.c
index 506e6ae50c9c..ea0c5e0878e4 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npa.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npa.c
@@ -15,6 +15,139 @@
 #include "rvu_reg.h"
 #include "rvu.h"
 
+static void npa_ctx_free(struct rvu *rvu, struct rvu_pfvf *pfvf)
+{
+	qmem_free(rvu->dev, pfvf->aura_ctx);
+	pfvf->aura_ctx = NULL;
+
+	qmem_free(rvu->dev, pfvf->pool_ctx);
+	pfvf->pool_ctx = NULL;
+
+	qmem_free(rvu->dev, pfvf->npa_qints_ctx);
+	pfvf->npa_qints_ctx = NULL;
+}
+
+int rvu_mbox_handler_NPA_LF_ALLOC(struct rvu *rvu,
+				  struct npa_lf_alloc_req *req,
+				  struct npa_lf_alloc_rsp *rsp)
+{
+	int npalf, qints, hwctx_size, err, rc = 0;
+	struct rvu_hwinfo *hw = rvu->hw;
+	u16 pcifunc = req->hdr.pcifunc;
+	struct rvu_block *block;
+	struct rvu_pfvf *pfvf;
+	u64 cfg, ctx_cfg;
+	int blkaddr;
+
+	if (req->aura_sz > NPA_AURA_SZ_MAX ||
+	    req->aura_sz == NPA_AURA_SZ_0 || !req->nr_pools)
+		return NPA_AF_ERR_PARAM;
+
+	pfvf = rvu_get_pfvf(rvu, pcifunc);
+	blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPA, pcifunc);
+	if (!pfvf->npalf || blkaddr < 0)
+		return NPA_AF_ERR_AF_LF_INVALID;
+
+	block = &hw->block[blkaddr];
+	npalf = rvu_get_lf(rvu, block, pcifunc, 0);
+	if (npalf < 0)
+		return NPA_AF_ERR_AF_LF_INVALID;
+
+	/* Reset this NPA LF */
+	err = rvu_lf_reset(rvu, block, npalf);
+	if (err) {
+		dev_err(rvu->dev, "Failed to reset NPALF%d\n", npalf);
+		return NPA_AF_ERR_LF_RESET;
+	}
+
+	ctx_cfg = rvu_read64(rvu, blkaddr, NPA_AF_CONST1);
+
+	/* Alloc memory for aura HW contexts */
+	hwctx_size = 1UL << (ctx_cfg & 0xF);
+	err = qmem_alloc(rvu->dev, &pfvf->aura_ctx,
+			 NPA_AURA_COUNT(req->aura_sz), hwctx_size);
+	if (err)
+		goto free_mem;
+
+	/* Alloc memory for pool HW contexts */
+	hwctx_size = 1UL << ((ctx_cfg >> 4) & 0xF);
+	err = qmem_alloc(rvu->dev, &pfvf->pool_ctx, req->nr_pools, hwctx_size);
+	if (err)
+		goto free_mem;
+
+	/* Get no of queue interrupts supported */
+	cfg = rvu_read64(rvu, blkaddr, NPA_AF_CONST);
+	qints = (cfg >> 28) & 0xFFF;
+
+	/* Alloc memory for Qints HW contexts */
+	hwctx_size = 1UL << ((ctx_cfg >> 8) & 0xF);
+	err = qmem_alloc(rvu->dev, &pfvf->npa_qints_ctx, qints, hwctx_size);
+	if (err)
+		goto free_mem;
+
+	cfg = rvu_read64(rvu, blkaddr, NPA_AF_LFX_AURAS_CFG(npalf));
+	/* Clear way partition mask and set aura offset to '0' */
+	cfg &= ~(BIT_ULL(34) - 1);
+	/* Set aura size & enable caching of contexts */
+	cfg |= (req->aura_sz << 16) | BIT_ULL(34);
+	rvu_write64(rvu, blkaddr, NPA_AF_LFX_AURAS_CFG(npalf), cfg);
+
+	/* Configure aura HW context's base */
+	rvu_write64(rvu, blkaddr, NPA_AF_LFX_LOC_AURAS_BASE(npalf),
+		    (u64)pfvf->aura_ctx->iova);
+
+	/* Enable caching of qints hw context */
+	rvu_write64(rvu, blkaddr, NPA_AF_LFX_QINTS_CFG(npalf), BIT_ULL(36));
+	rvu_write64(rvu, blkaddr, NPA_AF_LFX_QINTS_BASE(npalf),
+		    (u64)pfvf->npa_qints_ctx->iova);
+
+	goto exit;
+
+free_mem:
+	npa_ctx_free(rvu, pfvf);
+	rc = -ENOMEM;
+
+exit:
+	/* set stack page info */
+	cfg = rvu_read64(rvu, blkaddr, NPA_AF_CONST);
+	rsp->stack_pg_ptrs = (cfg >> 8) & 0xFF;
+	rsp->stack_pg_bytes = cfg & 0xFF;
+	rsp->qints = (cfg >> 28) & 0xFFF;
+	return rc;
+}
+
+int rvu_mbox_handler_NPA_LF_FREE(struct rvu *rvu, struct msg_req *req,
+				 struct msg_rsp *rsp)
+{
+	struct rvu_hwinfo *hw = rvu->hw;
+	u16 pcifunc = req->hdr.pcifunc;
+	struct rvu_block *block;
+	struct rvu_pfvf *pfvf;
+	int npalf, err;
+	int blkaddr;
+
+	pfvf = rvu_get_pfvf(rvu, pcifunc);
+	blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPA, pcifunc);
+	if (!pfvf->npalf || blkaddr < 0)
+		return NPA_AF_ERR_AF_LF_INVALID;
+
+	block = &hw->block[blkaddr];
+	npalf = rvu_get_lf(rvu, block, pcifunc, 0);
+	if (npalf < 0)
+		return NPA_AF_ERR_AF_LF_INVALID;
+
+	/* Reset this NPA LF */
+	err = rvu_lf_reset(rvu, block, npalf);
+	if (err) {
+		dev_err(rvu->dev, "Failed to reset NPALF%d\n", npalf);
+		return NPA_AF_ERR_LF_RESET;
+	}
+
+	npa_ctx_free(rvu, pfvf);
+
+	return 0;
+}
+
 static int npa_aq_init(struct rvu *rvu, struct rvu_block *block)
 {
 	u64 cfg;
@@ -75,12 +208,12 @@ void rvu_npa_freemem(struct rvu *rvu)
 {
 	struct rvu_hwinfo *hw = rvu->hw;
 	struct rvu_block *block;
-	int blkaddr, err;
+	int blkaddr;
 
 	blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPA, 0);
 	if (blkaddr < 0)
 		return;
 
 	block = &hw->block[blkaddr];
-	rvu_aq_free(rvu, &block->aq);
+	rvu_aq_free(rvu, block->aq);
 }