diff options
Diffstat (limited to 'drivers/net/ethernet/meta/fbnic/fbnic_csr.c')
| -rw-r--r-- | drivers/net/ethernet/meta/fbnic/fbnic_csr.c | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_csr.c b/drivers/net/ethernet/meta/fbnic/fbnic_csr.c new file mode 100644 index 000000000000..2118901b25e9 --- /dev/null +++ b/drivers/net/ethernet/meta/fbnic/fbnic_csr.c @@ -0,0 +1,148 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) Meta Platforms, Inc. and affiliates. */ + +#include "fbnic.h" + +#define FBNIC_BOUNDS(section) { \ + .start = FBNIC_CSR_START_##section, \ + .end = FBNIC_CSR_END_##section + 1, \ +} + +struct fbnic_csr_bounds { + u32 start; + u32 end; +}; + +static const struct fbnic_csr_bounds fbnic_csr_sects[] = { + FBNIC_BOUNDS(INTR), + FBNIC_BOUNDS(INTR_CQ), + FBNIC_BOUNDS(QM_TX), + FBNIC_BOUNDS(QM_RX), + FBNIC_BOUNDS(TCE), + FBNIC_BOUNDS(TCE_RAM), + FBNIC_BOUNDS(TMI), + FBNIC_BOUNDS(PTP), + FBNIC_BOUNDS(RXB), + FBNIC_BOUNDS(RPC), + FBNIC_BOUNDS(FAB), + FBNIC_BOUNDS(MASTER), + FBNIC_BOUNDS(PCS), + FBNIC_BOUNDS(RSFEC), + FBNIC_BOUNDS(MAC_MAC), + FBNIC_BOUNDS(SIG), + FBNIC_BOUNDS(PUL_USER), + FBNIC_BOUNDS(QUEUE), + FBNIC_BOUNDS(RPC_RAM), +}; + +#define FBNIC_RPC_TCAM_ACT_DW_PER_ENTRY 14 +#define FBNIC_RPC_TCAM_ACT_NUM_ENTRIES 64 + +#define FBNIC_RPC_TCAM_MACDA_DW_PER_ENTRY 4 +#define FBNIC_RPC_TCAM_MACDA_NUM_ENTRIES 32 + +#define FBNIC_RPC_TCAM_OUTER_IPSRC_DW_PER_ENTRY 9 +#define FBNIC_RPC_TCAM_OUTER_IPSRC_NUM_ENTRIES 8 + +#define FBNIC_RPC_TCAM_OUTER_IPDST_DW_PER_ENTRY 9 +#define FBNIC_RPC_TCAM_OUTER_IPDST_NUM_ENTRIES 8 + +#define FBNIC_RPC_TCAM_IPSRC_DW_PER_ENTRY 9 +#define FBNIC_RPC_TCAM_IPSRC_NUM_ENTRIES 8 + +#define FBNIC_RPC_TCAM_IPDST_DW_PER_ENTRY 9 +#define FBNIC_RPC_TCAM_IPDST_NUM_ENTRIES 8 + +#define FBNIC_RPC_RSS_TBL_DW_PER_ENTRY 2 +#define FBNIC_RPC_RSS_TBL_NUM_ENTRIES 256 + +static void fbnic_csr_get_regs_rpc_ram(struct fbnic_dev *fbd, u32 **data_p) +{ + u32 start = FBNIC_CSR_START_RPC_RAM; + u32 end = FBNIC_CSR_END_RPC_RAM; + u32 *data = *data_p; + u32 i, j; + + *(data++) = start; + *(data++) = end - 1; + + /* FBNIC_RPC_TCAM_ACT */ + for (i = 0; i < FBNIC_RPC_TCAM_ACT_NUM_ENTRIES; i++) { + for (j = 0; j < FBNIC_RPC_TCAM_ACT_DW_PER_ENTRY; j++) + *(data++) = rd32(fbd, FBNIC_RPC_TCAM_ACT(i, j)); + } + + /* FBNIC_RPC_TCAM_MACDA */ + for (i = 0; i < FBNIC_RPC_TCAM_MACDA_NUM_ENTRIES; i++) { + for (j = 0; j < FBNIC_RPC_TCAM_MACDA_DW_PER_ENTRY; j++) + *(data++) = rd32(fbd, FBNIC_RPC_TCAM_MACDA(i, j)); + } + + /* FBNIC_RPC_TCAM_OUTER_IPSRC */ + for (i = 0; i < FBNIC_RPC_TCAM_OUTER_IPSRC_NUM_ENTRIES; i++) { + for (j = 0; j < FBNIC_RPC_TCAM_OUTER_IPSRC_DW_PER_ENTRY; j++) + *(data++) = rd32(fbd, FBNIC_RPC_TCAM_OUTER_IPSRC(i, j)); + } + + /* FBNIC_RPC_TCAM_OUTER_IPDST */ + for (i = 0; i < FBNIC_RPC_TCAM_OUTER_IPDST_NUM_ENTRIES; i++) { + for (j = 0; j < FBNIC_RPC_TCAM_OUTER_IPDST_DW_PER_ENTRY; j++) + *(data++) = rd32(fbd, FBNIC_RPC_TCAM_OUTER_IPDST(i, j)); + } + + /* FBNIC_RPC_TCAM_IPSRC */ + for (i = 0; i < FBNIC_RPC_TCAM_IPSRC_NUM_ENTRIES; i++) { + for (j = 0; j < FBNIC_RPC_TCAM_IPSRC_DW_PER_ENTRY; j++) + *(data++) = rd32(fbd, FBNIC_RPC_TCAM_IPSRC(i, j)); + } + + /* FBNIC_RPC_TCAM_IPDST */ + for (i = 0; i < FBNIC_RPC_TCAM_IPDST_NUM_ENTRIES; i++) { + for (j = 0; j < FBNIC_RPC_TCAM_IPDST_DW_PER_ENTRY; j++) + *(data++) = rd32(fbd, FBNIC_RPC_TCAM_IPDST(i, j)); + } + + /* FBNIC_RPC_RSS_TBL */ + for (i = 0; i < FBNIC_RPC_RSS_TBL_NUM_ENTRIES; i++) { + for (j = 0; j < FBNIC_RPC_RSS_TBL_DW_PER_ENTRY; j++) + *(data++) = rd32(fbd, FBNIC_RPC_RSS_TBL(i, j)); + } + + *data_p = data; +} + +void fbnic_csr_get_regs(struct fbnic_dev *fbd, u32 *data, u32 *regs_version) +{ + const struct fbnic_csr_bounds *bound; + u32 *start = data; + int i, j; + + *regs_version = 1u; + + /* Skip RPC_RAM section which cannot be dumped linearly */ + for (i = 0, bound = fbnic_csr_sects; + i < ARRAY_SIZE(fbnic_csr_sects) - 1; i++, ++bound) { + *(data++) = bound->start; + *(data++) = bound->end - 1; + for (j = bound->start; j < bound->end; j++) + *(data++) = rd32(fbd, j); + } + + /* Dump the RPC_RAM as special case registers */ + fbnic_csr_get_regs_rpc_ram(fbd, &data); + + WARN_ON(data - start != fbnic_csr_regs_len(fbd)); +} + +int fbnic_csr_regs_len(struct fbnic_dev *fbd) +{ + int i, len = 0; + + /* Dump includes start and end information of each section + * which results in an offset of 2 + */ + for (i = 0; i < ARRAY_SIZE(fbnic_csr_sects); i++) + len += fbnic_csr_sects[i].end - fbnic_csr_sects[i].start + 2; + + return len; +} |