From b289593e1398480f5ac1a1df2dae479516a21372 Mon Sep 17 00:00:00 2001 From: Rahul Lakkireddy Date: Thu, 26 Oct 2017 17:18:37 +0530 Subject: [PATCH] cxgb4: collect MPS-TCAM dump Signed-off-by: Rahul Lakkireddy Signed-off-by: Ganesh Goudar Signed-off-by: David S. Miller --- .../net/ethernet/chelsio/cxgb4/cudbg_entity.h | 21 ++ drivers/net/ethernet/chelsio/cxgb4/cudbg_if.h | 1 + .../net/ethernet/chelsio/cxgb4/cudbg_lib.c | 184 ++++++++++++++++++ .../net/ethernet/chelsio/cxgb4/cudbg_lib.h | 3 + .../net/ethernet/chelsio/cxgb4/cxgb4_cudbg.c | 5 + drivers/net/ethernet/chelsio/cxgb4/t4_regs.h | 16 ++ 6 files changed, 230 insertions(+) diff --git a/drivers/net/ethernet/chelsio/cxgb4/cudbg_entity.h b/drivers/net/ethernet/chelsio/cxgb4/cudbg_entity.h index d023e3c5a029..1860cf2b5286 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cudbg_entity.h +++ b/drivers/net/ethernet/chelsio/cxgb4/cudbg_entity.h @@ -114,6 +114,27 @@ struct cudbg_tid_info_region_rev1 { u32 reserved[16]; }; +#define CUDBG_MAX_RPLC_SIZE 128 + +struct cudbg_mps_tcam { + u64 mask; + u32 rplc[8]; + u32 idx; + u32 cls_lo; + u32 cls_hi; + u32 rplc_size; + u32 vniy; + u32 vnix; + u32 dip_hit; + u32 vlan_vld; + u32 repli; + u16 ivlan; + u8 addr[ETH_ALEN]; + u8 lookup_type; + u8 port_num; + u8 reserved[2]; +}; + #define CUDBG_NUM_ULPTX 11 #define CUDBG_NUM_ULPTX_READ 512 diff --git a/drivers/net/ethernet/chelsio/cxgb4/cudbg_if.h b/drivers/net/ethernet/chelsio/cxgb4/cudbg_if.h index 655259f153f3..ce7bb909b8fd 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cudbg_if.h +++ b/drivers/net/ethernet/chelsio/cxgb4/cudbg_if.h @@ -58,6 +58,7 @@ enum cudbg_dbg_entity_type { CUDBG_PCIE_INDIRECT = 50, CUDBG_PM_INDIRECT = 51, CUDBG_TID_INFO = 54, + CUDBG_MPS_TCAM = 57, CUDBG_MA_INDIRECT = 61, CUDBG_ULPTX_LA = 62, CUDBG_UP_CIM_INDIRECT = 64, diff --git a/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c b/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c index 4697f113f9c6..03f1ec0c0160 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c +++ b/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c @@ -987,6 +987,190 @@ int cudbg_collect_tid(struct cudbg_init *pdbg_init, return rc; } +static inline void cudbg_tcamxy2valmask(u64 x, u64 y, u8 *addr, u64 *mask) +{ + *mask = x | y; + y = (__force u64)cpu_to_be64(y); + memcpy(addr, (char *)&y + 2, ETH_ALEN); +} + +static void cudbg_mps_rpl_backdoor(struct adapter *padap, + struct fw_ldst_mps_rplc *mps_rplc) +{ + if (is_t5(padap->params.chip)) { + mps_rplc->rplc255_224 = htonl(t4_read_reg(padap, + MPS_VF_RPLCT_MAP3_A)); + mps_rplc->rplc223_192 = htonl(t4_read_reg(padap, + MPS_VF_RPLCT_MAP2_A)); + mps_rplc->rplc191_160 = htonl(t4_read_reg(padap, + MPS_VF_RPLCT_MAP1_A)); + mps_rplc->rplc159_128 = htonl(t4_read_reg(padap, + MPS_VF_RPLCT_MAP0_A)); + } else { + mps_rplc->rplc255_224 = htonl(t4_read_reg(padap, + MPS_VF_RPLCT_MAP7_A)); + mps_rplc->rplc223_192 = htonl(t4_read_reg(padap, + MPS_VF_RPLCT_MAP6_A)); + mps_rplc->rplc191_160 = htonl(t4_read_reg(padap, + MPS_VF_RPLCT_MAP5_A)); + mps_rplc->rplc159_128 = htonl(t4_read_reg(padap, + MPS_VF_RPLCT_MAP4_A)); + } + mps_rplc->rplc127_96 = htonl(t4_read_reg(padap, MPS_VF_RPLCT_MAP3_A)); + mps_rplc->rplc95_64 = htonl(t4_read_reg(padap, MPS_VF_RPLCT_MAP2_A)); + mps_rplc->rplc63_32 = htonl(t4_read_reg(padap, MPS_VF_RPLCT_MAP1_A)); + mps_rplc->rplc31_0 = htonl(t4_read_reg(padap, MPS_VF_RPLCT_MAP0_A)); +} + +static int cudbg_collect_tcam_index(struct adapter *padap, + struct cudbg_mps_tcam *tcam, u32 idx) +{ + u64 tcamy, tcamx, val; + u32 ctl, data2; + int rc = 0; + + if (CHELSIO_CHIP_VERSION(padap->params.chip) >= CHELSIO_T6) { + /* CtlReqID - 1: use Host Driver Requester ID + * CtlCmdType - 0: Read, 1: Write + * CtlTcamSel - 0: TCAM0, 1: TCAM1 + * CtlXYBitSel- 0: Y bit, 1: X bit + */ + + /* Read tcamy */ + ctl = CTLREQID_V(1) | CTLCMDTYPE_V(0) | CTLXYBITSEL_V(0); + if (idx < 256) + ctl |= CTLTCAMINDEX_V(idx) | CTLTCAMSEL_V(0); + else + ctl |= CTLTCAMINDEX_V(idx - 256) | CTLTCAMSEL_V(1); + + t4_write_reg(padap, MPS_CLS_TCAM_DATA2_CTL_A, ctl); + val = t4_read_reg(padap, MPS_CLS_TCAM_RDATA1_REQ_ID1_A); + tcamy = DMACH_G(val) << 32; + tcamy |= t4_read_reg(padap, MPS_CLS_TCAM_RDATA0_REQ_ID1_A); + data2 = t4_read_reg(padap, MPS_CLS_TCAM_RDATA2_REQ_ID1_A); + tcam->lookup_type = DATALKPTYPE_G(data2); + + /* 0 - Outer header, 1 - Inner header + * [71:48] bit locations are overloaded for + * outer vs. inner lookup types. + */ + if (tcam->lookup_type && tcam->lookup_type != DATALKPTYPE_M) { + /* Inner header VNI */ + tcam->vniy = (data2 & DATAVIDH2_F) | DATAVIDH1_G(data2); + tcam->vniy = (tcam->vniy << 16) | VIDL_G(val); + tcam->dip_hit = data2 & DATADIPHIT_F; + } else { + tcam->vlan_vld = data2 & DATAVIDH2_F; + tcam->ivlan = VIDL_G(val); + } + + tcam->port_num = DATAPORTNUM_G(data2); + + /* Read tcamx. Change the control param */ + ctl |= CTLXYBITSEL_V(1); + t4_write_reg(padap, MPS_CLS_TCAM_DATA2_CTL_A, ctl); + val = t4_read_reg(padap, MPS_CLS_TCAM_RDATA1_REQ_ID1_A); + tcamx = DMACH_G(val) << 32; + tcamx |= t4_read_reg(padap, MPS_CLS_TCAM_RDATA0_REQ_ID1_A); + data2 = t4_read_reg(padap, MPS_CLS_TCAM_RDATA2_REQ_ID1_A); + if (tcam->lookup_type && tcam->lookup_type != DATALKPTYPE_M) { + /* Inner header VNI mask */ + tcam->vnix = (data2 & DATAVIDH2_F) | DATAVIDH1_G(data2); + tcam->vnix = (tcam->vnix << 16) | VIDL_G(val); + } + } else { + tcamy = t4_read_reg64(padap, MPS_CLS_TCAM_Y_L(idx)); + tcamx = t4_read_reg64(padap, MPS_CLS_TCAM_X_L(idx)); + } + + /* If no entry, return */ + if (tcamx & tcamy) + return rc; + + tcam->cls_lo = t4_read_reg(padap, MPS_CLS_SRAM_L(idx)); + tcam->cls_hi = t4_read_reg(padap, MPS_CLS_SRAM_H(idx)); + + if (is_t5(padap->params.chip)) + tcam->repli = (tcam->cls_lo & REPLICATE_F); + else if (is_t6(padap->params.chip)) + tcam->repli = (tcam->cls_lo & T6_REPLICATE_F); + + if (tcam->repli) { + struct fw_ldst_cmd ldst_cmd; + struct fw_ldst_mps_rplc mps_rplc; + + memset(&ldst_cmd, 0, sizeof(ldst_cmd)); + ldst_cmd.op_to_addrspace = + htonl(FW_CMD_OP_V(FW_LDST_CMD) | + FW_CMD_REQUEST_F | FW_CMD_READ_F | + FW_LDST_CMD_ADDRSPACE_V(FW_LDST_ADDRSPC_MPS)); + ldst_cmd.cycles_to_len16 = htonl(FW_LEN16(ldst_cmd)); + ldst_cmd.u.mps.rplc.fid_idx = + htons(FW_LDST_CMD_FID_V(FW_LDST_MPS_RPLC) | + FW_LDST_CMD_IDX_V(idx)); + + rc = t4_wr_mbox(padap, padap->mbox, &ldst_cmd, sizeof(ldst_cmd), + &ldst_cmd); + if (rc) + cudbg_mps_rpl_backdoor(padap, &mps_rplc); + else + mps_rplc = ldst_cmd.u.mps.rplc; + + tcam->rplc[0] = ntohl(mps_rplc.rplc31_0); + tcam->rplc[1] = ntohl(mps_rplc.rplc63_32); + tcam->rplc[2] = ntohl(mps_rplc.rplc95_64); + tcam->rplc[3] = ntohl(mps_rplc.rplc127_96); + if (padap->params.arch.mps_rplc_size > CUDBG_MAX_RPLC_SIZE) { + tcam->rplc[4] = ntohl(mps_rplc.rplc159_128); + tcam->rplc[5] = ntohl(mps_rplc.rplc191_160); + tcam->rplc[6] = ntohl(mps_rplc.rplc223_192); + tcam->rplc[7] = ntohl(mps_rplc.rplc255_224); + } + } + cudbg_tcamxy2valmask(tcamx, tcamy, tcam->addr, &tcam->mask); + tcam->idx = idx; + tcam->rplc_size = padap->params.arch.mps_rplc_size; + return rc; +} + +int cudbg_collect_mps_tcam(struct cudbg_init *pdbg_init, + struct cudbg_buffer *dbg_buff, + struct cudbg_error *cudbg_err) +{ + struct adapter *padap = pdbg_init->adap; + struct cudbg_buffer temp_buff = { 0 }; + u32 size = 0, i, n, total_size = 0; + struct cudbg_mps_tcam *tcam; + int rc; + + n = padap->params.arch.mps_tcam_size; + size = sizeof(struct cudbg_mps_tcam) * n; + rc = cudbg_get_buff(dbg_buff, size, &temp_buff); + if (rc) + return rc; + + tcam = (struct cudbg_mps_tcam *)temp_buff.data; + for (i = 0; i < n; i++) { + rc = cudbg_collect_tcam_index(padap, tcam, i); + if (rc) { + cudbg_err->sys_err = rc; + cudbg_put_buff(&temp_buff, dbg_buff); + return rc; + } + total_size += sizeof(struct cudbg_mps_tcam); + tcam++; + } + + if (!total_size) { + rc = CUDBG_SYSTEM_ERROR; + cudbg_err->sys_err = rc; + cudbg_put_buff(&temp_buff, dbg_buff); + return rc; + } + cudbg_write_and_release_buff(&temp_buff, dbg_buff); + return rc; +} + int cudbg_collect_ma_indirect(struct cudbg_init *pdbg_init, struct cudbg_buffer *dbg_buff, struct cudbg_error *cudbg_err) diff --git a/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.h b/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.h index f3bfd7cf4186..280423f9869d 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.h +++ b/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.h @@ -111,6 +111,9 @@ int cudbg_collect_pm_indirect(struct cudbg_init *pdbg_init, int cudbg_collect_tid(struct cudbg_init *pdbg_init, struct cudbg_buffer *dbg_buff, struct cudbg_error *cudbg_err); +int cudbg_collect_mps_tcam(struct cudbg_init *pdbg_init, + struct cudbg_buffer *dbg_buff, + struct cudbg_error *cudbg_err); int cudbg_collect_ma_indirect(struct cudbg_init *pdbg_init, struct cudbg_buffer *dbg_buff, struct cudbg_error *cudbg_err); diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_cudbg.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_cudbg.c index c5371e2ecf3c..f1a1ece45b97 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_cudbg.c +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_cudbg.c @@ -56,6 +56,7 @@ static const struct cxgb4_collect_entity cxgb4_collect_hw_dump[] = { { CUDBG_PCIE_INDIRECT, cudbg_collect_pcie_indirect }, { CUDBG_PM_INDIRECT, cudbg_collect_pm_indirect }, { CUDBG_TID_INFO, cudbg_collect_tid }, + { CUDBG_MPS_TCAM, cudbg_collect_mps_tcam }, { CUDBG_MA_INDIRECT, cudbg_collect_ma_indirect }, { CUDBG_ULPTX_LA, cudbg_collect_ulptx_la }, { CUDBG_UP_CIM_INDIRECT, cudbg_collect_up_cim_indirect }, @@ -196,6 +197,10 @@ static u32 cxgb4_get_entity_length(struct adapter *adap, u32 entity) case CUDBG_TID_INFO: len = sizeof(struct cudbg_tid_info_region_rev1); break; + case CUDBG_MPS_TCAM: + len = sizeof(struct cudbg_mps_tcam) * + adap->params.arch.mps_tcam_size; + break; case CUDBG_MA_INDIRECT: if (CHELSIO_CHIP_VERSION(adap->params.chip) > CHELSIO_T5) { n = sizeof(t6_ma_ireg_array) / diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_regs.h b/drivers/net/ethernet/chelsio/cxgb4/t4_regs.h index 57a36a048313..775a591c0fba 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/t4_regs.h +++ b/drivers/net/ethernet/chelsio/cxgb4/t4_regs.h @@ -2439,6 +2439,18 @@ #define MPS_CLS_TCAM_DATA0_A 0xf000 #define MPS_CLS_TCAM_DATA1_A 0xf004 +#define CTLREQID_S 30 +#define CTLREQID_V(x) ((x) << CTLREQID_S) + +#define MPS_VF_RPLCT_MAP0_A 0x1111c +#define MPS_VF_RPLCT_MAP1_A 0x11120 +#define MPS_VF_RPLCT_MAP2_A 0x11124 +#define MPS_VF_RPLCT_MAP3_A 0x11128 +#define MPS_VF_RPLCT_MAP4_A 0x11300 +#define MPS_VF_RPLCT_MAP5_A 0x11304 +#define MPS_VF_RPLCT_MAP6_A 0x11308 +#define MPS_VF_RPLCT_MAP7_A 0x1130c + #define VIDL_S 16 #define VIDL_M 0xffffU #define VIDL_G(x) (((x) >> VIDL_S) & VIDL_M) @@ -2463,6 +2475,10 @@ #define DATAVIDH1_M 0x7fU #define DATAVIDH1_G(x) (((x) >> DATAVIDH1_S) & DATAVIDH1_M) +#define MPS_CLS_TCAM_RDATA0_REQ_ID1_A 0xf020 +#define MPS_CLS_TCAM_RDATA1_REQ_ID1_A 0xf024 +#define MPS_CLS_TCAM_RDATA2_REQ_ID1_A 0xf028 + #define USED_S 16 #define USED_M 0x7ffU #define USED_G(x) (((x) >> USED_S) & USED_M) -- 2.30.2