diff options
| author |   Michael Chan <michael.chan@broadcom.com> | 2018-10-14 07:02:42 -0400 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-10-15 22:44:31 -0700 |
| commit | 66cca20abcf742e2e39ec437144e7787ecefa037 (patch) | |
| tree | cd5be304b54d4da4a191b6f0235c9dbf6ff94c05 /drivers/net | |
| parent | bnxt_en: Refactor bnxt_ring_struct. (diff) | |
| download | linux-dev-66cca20abcf742e2e39ec437144e7787ecefa037.tar.xz linux-dev-66cca20abcf742e2e39ec437144e7787ecefa037.zip | |
bnxt_en: Add new flags to setup new page table PTE bits on newer devices.
Newer chips require the PTU_PTE_VALID bit to be set for every page
table entry for context memory and rings. Additional bits are also
required for page table entries for all rings. Add a flags field to
bnxt_ring_mem_info struct to specify these additional bits to be used
when setting up the pages tables as needed.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/ethernet/broadcom/bnxt/bnxt.c | 17 | ||||
| -rw-r--r-- | drivers/net/ethernet/broadcom/bnxt/bnxt.h | 8 |
2 files changed, 23 insertions, 2 deletions
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index 602dc0975eeb..f0da558561f1 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -2230,8 +2230,11 @@ static void bnxt_free_ring(struct bnxt *bp, struct bnxt_ring_mem_info *rmem) static int bnxt_alloc_ring(struct bnxt *bp, struct bnxt_ring_mem_info *rmem) { struct pci_dev *pdev = bp->pdev; + u64 valid_bit = 0; int i; + 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, @@ -2242,6 +2245,8 @@ static int bnxt_alloc_ring(struct bnxt *bp, struct bnxt_ring_mem_info *rmem) } for (i = 0; i < rmem->nr_pages; i++) { + u64 extra_bits = valid_bit; + rmem->pg_arr[i] = dma_alloc_coherent(&pdev->dev, rmem->page_size, &rmem->dma_arr[i], @@ -2249,8 +2254,16 @@ 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) - rmem->pg_tbl[i] = cpu_to_le64(rmem->dma_arr[i]); + if (rmem->nr_pages > 1) { + if (i == rmem->nr_pages - 2 && + (rmem->flags & BNXT_RMEM_RING_PTE_FLAG)) + extra_bits |= PTU_PTE_NEXT_TO_LAST; + else if (i == rmem->nr_pages - 1 && + (rmem->flags & BNXT_RMEM_RING_PTE_FLAG)) + extra_bits |= PTU_PTE_LAST; + rmem->pg_tbl[i] = + cpu_to_le64(rmem->dma_arr[i] | extra_bits); + } } if (rmem->vmem_size) { diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h index 2e4b62147cf5..5792e5c18170 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h @@ -580,6 +580,10 @@ struct bnxt_sw_rx_agg_bd { struct bnxt_ring_mem_info { int nr_pages; int page_size; + u32 flags; +#define BNXT_RMEM_VALID_PTE_FLAG 1 +#define BNXT_RMEM_RING_PTE_FLAG 2 + void **pg_arr; dma_addr_t *dma_arr; @@ -1109,6 +1113,10 @@ struct bnxt_vf_rep { struct bnxt_vf_rep_stats tx_stats; }; +#define PTU_PTE_VALID 0x1UL +#define PTU_PTE_LAST 0x2UL +#define PTU_PTE_NEXT_TO_LAST 0x4UL + struct bnxt { void __iomem *bar0; void __iomem *bar1; |