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bnxt_en: Configure context memory on new devices.
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Call firmware to configure the DMA addresses of all context memory
pages on new devices requiring context memory.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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@davem330
Michael Chan authored and davem330 committed Oct 16, 2018
1 parent 98f04cf commit 1b9394e
Showing 1 changed file with 120 additions and 3 deletions.
123 changes: 120 additions & 3 deletions drivers/net/ethernet/broadcom/bnxt/bnxt.c
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Original file line number Diff line number Diff line change
Expand Up @@ -5325,6 +5325,114 @@ static int bnxt_hwrm_func_backing_store_qcaps(struct bnxt *bp)
return rc;
}

static void bnxt_hwrm_set_pg_attr(struct bnxt_ring_mem_info *rmem, u8 *pg_attr,
__le64 *pg_dir)
{
u8 pg_size = 0;

if (BNXT_PAGE_SHIFT == 13)
pg_size = 1 << 4;
else if (BNXT_PAGE_SIZE == 16)
pg_size = 2 << 4;

*pg_attr = pg_size;
if (rmem->nr_pages > 1) {
*pg_attr |= 1;
*pg_dir = cpu_to_le64(rmem->pg_tbl_map);
} else {
*pg_dir = cpu_to_le64(rmem->dma_arr[0]);
}
}

#define FUNC_BACKING_STORE_CFG_REQ_DFLT_ENABLES \
(FUNC_BACKING_STORE_CFG_REQ_ENABLES_QP | \
FUNC_BACKING_STORE_CFG_REQ_ENABLES_SRQ | \
FUNC_BACKING_STORE_CFG_REQ_ENABLES_CQ | \
FUNC_BACKING_STORE_CFG_REQ_ENABLES_VNIC | \
FUNC_BACKING_STORE_CFG_REQ_ENABLES_STAT)

static int bnxt_hwrm_func_backing_store_cfg(struct bnxt *bp, u32 enables)
{
struct hwrm_func_backing_store_cfg_input req = {0};
struct bnxt_ctx_mem_info *ctx = bp->ctx;
struct bnxt_ctx_pg_info *ctx_pg;
__le32 *num_entries;
__le64 *pg_dir;
u8 *pg_attr;
int i, rc;
u32 ena;

if (!ctx)
return 0;

bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_BACKING_STORE_CFG, -1, -1);
req.enables = cpu_to_le32(enables);

if (enables & FUNC_BACKING_STORE_CFG_REQ_ENABLES_QP) {
ctx_pg = &ctx->qp_mem;
req.qp_num_entries = cpu_to_le32(ctx_pg->entries);
req.qp_num_qp1_entries = cpu_to_le16(ctx->qp_min_qp1_entries);
req.qp_num_l2_entries = cpu_to_le16(ctx->qp_max_l2_entries);
req.qp_entry_size = cpu_to_le16(ctx->qp_entry_size);
bnxt_hwrm_set_pg_attr(&ctx_pg->ring_mem,
&req.qpc_pg_size_qpc_lvl,
&req.qpc_page_dir);
}
if (enables & FUNC_BACKING_STORE_CFG_REQ_ENABLES_SRQ) {
ctx_pg = &ctx->srq_mem;
req.srq_num_entries = cpu_to_le32(ctx_pg->entries);
req.srq_num_l2_entries = cpu_to_le16(ctx->srq_max_l2_entries);
req.srq_entry_size = cpu_to_le16(ctx->srq_entry_size);
bnxt_hwrm_set_pg_attr(&ctx_pg->ring_mem,
&req.srq_pg_size_srq_lvl,
&req.srq_page_dir);
}
if (enables & FUNC_BACKING_STORE_CFG_REQ_ENABLES_CQ) {
ctx_pg = &ctx->cq_mem;
req.cq_num_entries = cpu_to_le32(ctx_pg->entries);
req.cq_num_l2_entries = cpu_to_le16(ctx->cq_max_l2_entries);
req.cq_entry_size = cpu_to_le16(ctx->cq_entry_size);
bnxt_hwrm_set_pg_attr(&ctx_pg->ring_mem, &req.cq_pg_size_cq_lvl,
&req.cq_page_dir);
}
if (enables & FUNC_BACKING_STORE_CFG_REQ_ENABLES_VNIC) {
ctx_pg = &ctx->vnic_mem;
req.vnic_num_vnic_entries =
cpu_to_le16(ctx->vnic_max_vnic_entries);
req.vnic_num_ring_table_entries =
cpu_to_le16(ctx->vnic_max_ring_table_entries);
req.vnic_entry_size = cpu_to_le16(ctx->vnic_entry_size);
bnxt_hwrm_set_pg_attr(&ctx_pg->ring_mem,
&req.vnic_pg_size_vnic_lvl,
&req.vnic_page_dir);
}
if (enables & FUNC_BACKING_STORE_CFG_REQ_ENABLES_STAT) {
ctx_pg = &ctx->stat_mem;
req.stat_num_entries = cpu_to_le32(ctx->stat_max_entries);
req.stat_entry_size = cpu_to_le16(ctx->stat_entry_size);
bnxt_hwrm_set_pg_attr(&ctx_pg->ring_mem,
&req.stat_pg_size_stat_lvl,
&req.stat_page_dir);
}
for (i = 0, num_entries = &req.tqm_sp_num_entries,
pg_attr = &req.tqm_sp_pg_size_tqm_sp_lvl,
pg_dir = &req.tqm_sp_page_dir,
ena = FUNC_BACKING_STORE_CFG_REQ_ENABLES_TQM_SP;
i < 9; i++, num_entries++, pg_attr++, pg_dir++, ena <<= 1) {
if (!(enables & ena))
continue;

req.tqm_entry_size = cpu_to_le16(ctx->tqm_entry_size);
ctx_pg = ctx->tqm_mem[i];
*num_entries = cpu_to_le32(ctx_pg->entries);
bnxt_hwrm_set_pg_attr(&ctx_pg->ring_mem, pg_attr, pg_dir);
}
rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
if (rc)
rc = -EIO;
return rc;
}

static int bnxt_alloc_ctx_mem_blk(struct bnxt *bp,
struct bnxt_ctx_pg_info *ctx_pg, u32 mem_size)
{
Expand All @@ -5341,6 +5449,7 @@ static int bnxt_alloc_ctx_mem_blk(struct bnxt *bp,
rmem->page_size = BNXT_PAGE_SIZE;
rmem->pg_arr = ctx_pg->ctx_pg_arr;
rmem->dma_arr = ctx_pg->ctx_dma_arr;
rmem->flags = BNXT_RMEM_VALID_PTE_FLAG;
return bnxt_alloc_ring(bp, rmem);
}

Expand Down Expand Up @@ -5371,7 +5480,7 @@ static int bnxt_alloc_ctx_mem(struct bnxt *bp)
{
struct bnxt_ctx_pg_info *ctx_pg;
struct bnxt_ctx_mem_info *ctx;
u32 mem_size, entries;
u32 mem_size, ena, entries;
int i, rc;

rc = bnxt_hwrm_func_backing_store_qcaps(bp);
Expand Down Expand Up @@ -5424,15 +5533,23 @@ static int bnxt_alloc_ctx_mem(struct bnxt *bp)
entries = roundup(entries, ctx->tqm_entries_multiple);
entries = clamp_t(u32, entries, ctx->tqm_min_entries_per_ring,
ctx->tqm_max_entries_per_ring);
for (i = 0; i < bp->max_q + 1; i++) {
for (i = 0, ena = 0; i < bp->max_q + 1; i++) {
ctx_pg = ctx->tqm_mem[i];
ctx_pg->entries = entries;
mem_size = ctx->tqm_entry_size * entries;
rc = bnxt_alloc_ctx_mem_blk(bp, ctx_pg, mem_size);
if (rc)
return rc;
ena |= FUNC_BACKING_STORE_CFG_REQ_ENABLES_TQM_SP << i;
}
ctx->flags |= BNXT_CTX_FLAG_INITED;
ena |= FUNC_BACKING_STORE_CFG_REQ_DFLT_ENABLES;
rc = bnxt_hwrm_func_backing_store_cfg(bp, ena);
if (rc)
netdev_err(bp->dev, "Failed configuring context mem, rc = %d.\n",
rc);
else
ctx->flags |= BNXT_CTX_FLAG_INITED;

return 0;
}

Expand Down

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