diff options
| author | Michael Chan <michael.chan@broadcom.com> | 2018-12-20 11:38:49 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-12-20 19:26:16 +0300 |
| commit | 4f49b2b8d4167b712ce876bff08bd9606a44f7a6 (patch) | |
| tree | 078386537ea13f650be2f39259702c7929576342 /drivers | |
| parent | 760b6d33410cda351f236058585471cb0f417978 (diff) | |
| download | linux-4f49b2b8d4167b712ce876bff08bd9606a44f7a6.tar.xz | |
bnxt_en: Enhance bnxt_alloc_ring()/bnxt_free_ring().
To support level 2 context page memory structures, enhance the
bnxt_ring_mem_info structure with a "depth" field to specify the page
level and add a flag to specify using full pages for L1 and L2 page
tables. This is needed to support RDMA functionality on 57500 chips
since RDMA requires more context memory.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/broadcom/bnxt/bnxt.c | 17 | ||||
| -rw-r--r-- | drivers/net/ethernet/broadcom/bnxt/bnxt.h | 5 |
2 files changed, 16 insertions, 6 deletions
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index 79280c8f026b..a46e2ff3a773 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -2375,7 +2375,11 @@ static void bnxt_free_ring(struct bnxt *bp, struct bnxt_ring_mem_info *rmem) rmem->pg_arr[i] = NULL; } if (rmem->pg_tbl) { - dma_free_coherent(&pdev->dev, rmem->nr_pages * 8, + size_t pg_tbl_size = rmem->nr_pages * 8; + + if (rmem->flags & BNXT_RMEM_USE_FULL_PAGE_FLAG) + pg_tbl_size = rmem->page_size; + dma_free_coherent(&pdev->dev, pg_tbl_size, rmem->pg_tbl, rmem->pg_tbl_map); rmem->pg_tbl = NULL; } @@ -2393,9 +2397,12 @@ static int bnxt_alloc_ring(struct bnxt *bp, struct bnxt_ring_mem_info *rmem) if (rmem->flags & (BNXT_RMEM_VALID_PTE_FLAG | BNXT_RMEM_RING_PTE_FLAG)) valid_bit = PTU_PTE_VALID; - if (rmem->nr_pages > 1) { - rmem->pg_tbl = dma_alloc_coherent(&pdev->dev, - rmem->nr_pages * 8, + if ((rmem->nr_pages > 1 || rmem->depth > 0) && !rmem->pg_tbl) { + size_t pg_tbl_size = rmem->nr_pages * 8; + + if (rmem->flags & BNXT_RMEM_USE_FULL_PAGE_FLAG) + pg_tbl_size = rmem->page_size; + rmem->pg_tbl = dma_alloc_coherent(&pdev->dev, pg_tbl_size, &rmem->pg_tbl_map, GFP_KERNEL); if (!rmem->pg_tbl) @@ -2412,7 +2419,7 @@ static int bnxt_alloc_ring(struct bnxt *bp, struct bnxt_ring_mem_info *rmem) if (!rmem->pg_arr[i]) return -ENOMEM; - if (rmem->nr_pages > 1) { + if (rmem->nr_pages > 1 || rmem->depth > 0) { if (i == rmem->nr_pages - 2 && (rmem->flags & BNXT_RMEM_RING_PTE_FLAG)) extra_bits |= PTU_PTE_NEXT_TO_LAST; diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h index c3334c0d1e62..1a5d02beee37 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h @@ -617,9 +617,12 @@ struct bnxt_sw_rx_agg_bd { struct bnxt_ring_mem_info { int nr_pages; int page_size; - u32 flags; + u16 flags; #define BNXT_RMEM_VALID_PTE_FLAG 1 #define BNXT_RMEM_RING_PTE_FLAG 2 +#define BNXT_RMEM_USE_FULL_PAGE_FLAG 4 + + u16 depth; void **pg_arr; dma_addr_t *dma_arr; |