diff options
| -rw-r--r-- | drivers/net/ethernet/broadcom/bnxt/bnxt.c | 103 | ||||
| -rw-r--r-- | drivers/net/ethernet/broadcom/bnxt/bnxt.h | 4 |
2 files changed, 107 insertions, 0 deletions
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index b0f3b431708c..5f7bdafcf05d 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -3493,6 +3493,35 @@ static void bnxt_init_ctx_mem(struct bnxt_ctx_mem_type *ctxm, void *p, int len) *(p2 + i + offset) = init_val; } +static size_t __bnxt_copy_ring(struct bnxt *bp, struct bnxt_ring_mem_info *rmem, + void *buf, size_t offset, size_t head, + size_t tail) +{ + int i, head_page, start_idx, source_offset; + size_t len, rem_len, total_len, max_bytes; + + head_page = head / rmem->page_size; + source_offset = head % rmem->page_size; + total_len = (tail - head) & MAX_CTX_BYTES_MASK; + if (!total_len) + total_len = MAX_CTX_BYTES; + start_idx = head_page % MAX_CTX_PAGES; + max_bytes = (rmem->nr_pages - start_idx) * rmem->page_size - + source_offset; + total_len = min(total_len, max_bytes); + rem_len = total_len; + + for (i = start_idx; rem_len; i++, source_offset = 0) { + len = min((size_t)(rmem->page_size - source_offset), rem_len); + if (buf) + memcpy(buf + offset, rmem->pg_arr[i] + source_offset, + len); + offset += len; + rem_len -= len; + } + return total_len; +} + static void bnxt_free_ring(struct bnxt *bp, struct bnxt_ring_mem_info *rmem) { struct pci_dev *pdev = bp->pdev; @@ -8728,6 +8757,36 @@ static int bnxt_alloc_ctx_pg_tbls(struct bnxt *bp, return rc; } +static size_t bnxt_copy_ctx_pg_tbls(struct bnxt *bp, + struct bnxt_ctx_pg_info *ctx_pg, + void *buf, size_t offset, size_t head, + size_t tail) +{ + struct bnxt_ring_mem_info *rmem = &ctx_pg->ring_mem; + size_t nr_pages = ctx_pg->nr_pages; + int page_size = rmem->page_size; + size_t len = 0, total_len = 0; + u16 depth = rmem->depth; + + tail %= nr_pages * page_size; + do { + if (depth > 1) { + int i = head / (page_size * MAX_CTX_PAGES); + struct bnxt_ctx_pg_info *pg_tbl; + + pg_tbl = ctx_pg->ctx_pg_tbl[i]; + rmem = &pg_tbl->ring_mem; + } + len = __bnxt_copy_ring(bp, rmem, buf, offset, head, tail); + head += len; + offset += len; + total_len += len; + if (head >= nr_pages * page_size) + head = 0; + } while (head != tail); + return total_len; +} + static void bnxt_free_ctx_pg_tbls(struct bnxt *bp, struct bnxt_ctx_pg_info *ctx_pg) { @@ -8888,6 +8947,50 @@ static int bnxt_backing_store_cfg_v2(struct bnxt *bp, u32 ena) return 0; } +/** + * __bnxt_copy_ctx_mem - copy host context memory + * @bp: The driver context + * @ctxm: The pointer to the context memory type + * @buf: The destination buffer or NULL to just obtain the length + * @offset: The buffer offset to copy the data to + * @head: The head offset of context memory to copy from + * @tail: The tail offset (last byte + 1) of context memory to end the copy + * + * This function is called for debugging purposes to dump the host context + * used by the chip. + * + * Return: Length of memory copied + */ +static size_t __bnxt_copy_ctx_mem(struct bnxt *bp, + struct bnxt_ctx_mem_type *ctxm, void *buf, + size_t offset, size_t head, size_t tail) +{ + struct bnxt_ctx_pg_info *ctx_pg = ctxm->pg_info; + size_t len = 0, total_len = 0; + int i, n = 1; + + if (!ctx_pg) + return 0; + + if (ctxm->instance_bmap) + n = hweight32(ctxm->instance_bmap); + for (i = 0; i < n; i++) { + len = bnxt_copy_ctx_pg_tbls(bp, &ctx_pg[i], buf, offset, head, + tail); + offset += len; + total_len += len; + } + return total_len; +} + +size_t bnxt_copy_ctx_mem(struct bnxt *bp, struct bnxt_ctx_mem_type *ctxm, + void *buf, size_t offset) +{ + size_t tail = ctxm->max_entries * ctxm->entry_size; + + return __bnxt_copy_ctx_mem(bp, ctxm, buf, offset, 0, tail); +} + static void bnxt_free_one_ctx_mem(struct bnxt *bp, struct bnxt_ctx_mem_type *ctxm, bool force) { diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h index 4ebee79fbe52..2d63490b9f14 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h @@ -1849,6 +1849,8 @@ struct bnxt_vf_rep { #define MAX_CTX_PAGES (BNXT_PAGE_SIZE / 8) #define MAX_CTX_TOTAL_PAGES (MAX_CTX_PAGES * MAX_CTX_PAGES) +#define MAX_CTX_BYTES ((size_t)MAX_CTX_TOTAL_PAGES * BNXT_PAGE_SIZE) +#define MAX_CTX_BYTES_MASK (MAX_CTX_BYTES - 1) struct bnxt_ctx_pg_info { u32 entries; @@ -2863,6 +2865,8 @@ int bnxt_hwrm_vnic_alloc(struct bnxt *bp, struct bnxt_vnic_info *vnic, int __bnxt_hwrm_get_tx_rings(struct bnxt *bp, u16 fid, int *tx_rings); int bnxt_nq_rings_in_use(struct bnxt *bp); int bnxt_hwrm_set_coal(struct bnxt *); +size_t bnxt_copy_ctx_mem(struct bnxt *bp, struct bnxt_ctx_mem_type *ctxm, + void *buf, size_t offset); void bnxt_free_ctx_mem(struct bnxt *bp, bool force); int bnxt_num_tx_to_cp(struct bnxt *bp, int tx); unsigned int bnxt_get_max_func_stat_ctxs(struct bnxt *bp); |