net: mscc: Add initial Ocelot switch support

Add a driver for Microsemi Ocelot Ethernet switch support.

This makes two modules:
mscc_ocelot_common handles all the common features that doesn't depend on
how the switch is integrated in the SoC. Currently, it handles offloading
bridging to the hardware. ocelot_io.c handles register accesses. This is
unfortunately needed because the register layout is packed and then depends
on the number of ports available on the switch. The register definition
files are automatically generated.

ocelot_board handles the switch integration on the SoC and on the board.

Frame injection and extraction to/from the CPU port is currently done using
register accesses which is quite slow. DMA is possible but the port is not
able to absorb the whole switch bandwidth.

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 270 insertions, 0 deletions

diff --git a/drivers/net/ethernet/mscc/ocelot_qsys.h b/drivers/net/ethernet/mscc/ocelot_qsys.h
new file mode 100644
index 000000000000..aa7267d5ca77
--- /dev/null
+++ b/drivers/net/ethernet/mscc/ocelot_qsys.h
@@ -0,0 +1,270 @@
+/*
+ * Microsemi Ocelot Switch driver
+ *
+ * License: Dual MIT/GPL
+ * Copyright (c) 2017 Microsemi Corporation
+ */
+
+#ifndef _MSCC_OCELOT_QSYS_H_
+#define _MSCC_OCELOT_QSYS_H_
+
+#define QSYS_PORT_MODE_RSZ                                0x4
+
+#define QSYS_PORT_MODE_DEQUEUE_DIS                        BIT(1)
+#define QSYS_PORT_MODE_DEQUEUE_LATE                       BIT(0)
+
+#define QSYS_SWITCH_PORT_MODE_RSZ                         0x4
+
+#define QSYS_SWITCH_PORT_MODE_PORT_ENA                    BIT(14)
+#define QSYS_SWITCH_PORT_MODE_SCH_NEXT_CFG(x)             (((x) << 11) & GENMASK(13, 11))
+#define QSYS_SWITCH_PORT_MODE_SCH_NEXT_CFG_M              GENMASK(13, 11)
+#define QSYS_SWITCH_PORT_MODE_SCH_NEXT_CFG_X(x)           (((x) & GENMASK(13, 11)) >> 11)
+#define QSYS_SWITCH_PORT_MODE_YEL_RSRVD                   BIT(10)
+#define QSYS_SWITCH_PORT_MODE_INGRESS_DROP_MODE           BIT(9)
+#define QSYS_SWITCH_PORT_MODE_TX_PFC_ENA(x)               (((x) << 1) & GENMASK(8, 1))
+#define QSYS_SWITCH_PORT_MODE_TX_PFC_ENA_M                GENMASK(8, 1)
+#define QSYS_SWITCH_PORT_MODE_TX_PFC_ENA_X(x)             (((x) & GENMASK(8, 1)) >> 1)
+#define QSYS_SWITCH_PORT_MODE_TX_PFC_MODE                 BIT(0)
+
+#define QSYS_STAT_CNT_CFG_TX_GREEN_CNT_MODE               BIT(5)
+#define QSYS_STAT_CNT_CFG_TX_YELLOW_CNT_MODE              BIT(4)
+#define QSYS_STAT_CNT_CFG_DROP_GREEN_CNT_MODE             BIT(3)
+#define QSYS_STAT_CNT_CFG_DROP_YELLOW_CNT_MODE            BIT(2)
+#define QSYS_STAT_CNT_CFG_DROP_COUNT_ONCE                 BIT(1)
+#define QSYS_STAT_CNT_CFG_DROP_COUNT_EGRESS               BIT(0)
+
+#define QSYS_EEE_CFG_RSZ                                  0x4
+
+#define QSYS_EEE_THRES_EEE_HIGH_BYTES(x)                  (((x) << 8) & GENMASK(15, 8))
+#define QSYS_EEE_THRES_EEE_HIGH_BYTES_M                   GENMASK(15, 8)
+#define QSYS_EEE_THRES_EEE_HIGH_BYTES_X(x)                (((x) & GENMASK(15, 8)) >> 8)
+#define QSYS_EEE_THRES_EEE_HIGH_FRAMES(x)                 ((x) & GENMASK(7, 0))
+#define QSYS_EEE_THRES_EEE_HIGH_FRAMES_M                  GENMASK(7, 0)
+
+#define QSYS_SW_STATUS_RSZ                                0x4
+
+#define QSYS_EXT_CPU_CFG_EXT_CPU_PORT(x)                  (((x) << 8) & GENMASK(12, 8))
+#define QSYS_EXT_CPU_CFG_EXT_CPU_PORT_M                   GENMASK(12, 8)
+#define QSYS_EXT_CPU_CFG_EXT_CPU_PORT_X(x)                (((x) & GENMASK(12, 8)) >> 8)
+#define QSYS_EXT_CPU_CFG_EXT_CPUQ_MSK(x)                  ((x) & GENMASK(7, 0))
+#define QSYS_EXT_CPU_CFG_EXT_CPUQ_MSK_M                   GENMASK(7, 0)
+
+#define QSYS_QMAP_GSZ                                     0x4
+
+#define QSYS_QMAP_SE_BASE(x)                              (((x) << 5) & GENMASK(12, 5))
+#define QSYS_QMAP_SE_BASE_M                               GENMASK(12, 5)
+#define QSYS_QMAP_SE_BASE_X(x)                            (((x) & GENMASK(12, 5)) >> 5)
+#define QSYS_QMAP_SE_IDX_SEL(x)                           (((x) << 2) & GENMASK(4, 2))
+#define QSYS_QMAP_SE_IDX_SEL_M                            GENMASK(4, 2)
+#define QSYS_QMAP_SE_IDX_SEL_X(x)                         (((x) & GENMASK(4, 2)) >> 2)
+#define QSYS_QMAP_SE_INP_SEL(x)                           ((x) & GENMASK(1, 0))
+#define QSYS_QMAP_SE_INP_SEL_M                            GENMASK(1, 0)
+
+#define QSYS_ISDX_SGRP_GSZ                                0x4
+
+#define QSYS_TIMED_FRAME_ENTRY_GSZ                        0x4
+
+#define QSYS_TFRM_MISC_TIMED_CANCEL_SLOT(x)               (((x) << 9) & GENMASK(18, 9))
+#define QSYS_TFRM_MISC_TIMED_CANCEL_SLOT_M                GENMASK(18, 9)
+#define QSYS_TFRM_MISC_TIMED_CANCEL_SLOT_X(x)             (((x) & GENMASK(18, 9)) >> 9)
+#define QSYS_TFRM_MISC_TIMED_CANCEL_1SHOT                 BIT(8)
+#define QSYS_TFRM_MISC_TIMED_SLOT_MODE_MC                 BIT(7)
+#define QSYS_TFRM_MISC_TIMED_ENTRY_FAST_CNT(x)            ((x) & GENMASK(6, 0))
+#define QSYS_TFRM_MISC_TIMED_ENTRY_FAST_CNT_M             GENMASK(6, 0)
+
+#define QSYS_RED_PROFILE_RSZ                              0x4
+
+#define QSYS_RED_PROFILE_WM_RED_LOW(x)                    (((x) << 8) & GENMASK(15, 8))
+#define QSYS_RED_PROFILE_WM_RED_LOW_M                     GENMASK(15, 8)
+#define QSYS_RED_PROFILE_WM_RED_LOW_X(x)                  (((x) & GENMASK(15, 8)) >> 8)
+#define QSYS_RED_PROFILE_WM_RED_HIGH(x)                   ((x) & GENMASK(7, 0))
+#define QSYS_RED_PROFILE_WM_RED_HIGH_M                    GENMASK(7, 0)
+
+#define QSYS_RES_CFG_GSZ                                  0x8
+
+#define QSYS_RES_STAT_GSZ                                 0x8
+
+#define QSYS_RES_STAT_INUSE(x)                            (((x) << 12) & GENMASK(23, 12))
+#define QSYS_RES_STAT_INUSE_M                             GENMASK(23, 12)
+#define QSYS_RES_STAT_INUSE_X(x)                          (((x) & GENMASK(23, 12)) >> 12)
+#define QSYS_RES_STAT_MAXUSE(x)                           ((x) & GENMASK(11, 0))
+#define QSYS_RES_STAT_MAXUSE_M                            GENMASK(11, 0)
+
+#define QSYS_EVENTS_CORE_EV_FDC(x)                        (((x) << 2) & GENMASK(4, 2))
+#define QSYS_EVENTS_CORE_EV_FDC_M                         GENMASK(4, 2)
+#define QSYS_EVENTS_CORE_EV_FDC_X(x)                      (((x) & GENMASK(4, 2)) >> 2)
+#define QSYS_EVENTS_CORE_EV_FRD(x)                        ((x) & GENMASK(1, 0))
+#define QSYS_EVENTS_CORE_EV_FRD_M                         GENMASK(1, 0)
+
+#define QSYS_QMAXSDU_CFG_0_RSZ                            0x4
+
+#define QSYS_QMAXSDU_CFG_1_RSZ                            0x4
+
+#define QSYS_QMAXSDU_CFG_2_RSZ                            0x4
+
+#define QSYS_QMAXSDU_CFG_3_RSZ                            0x4
+
+#define QSYS_QMAXSDU_CFG_4_RSZ                            0x4
+
+#define QSYS_QMAXSDU_CFG_5_RSZ                            0x4
+
+#define QSYS_QMAXSDU_CFG_6_RSZ                            0x4
+
+#define QSYS_QMAXSDU_CFG_7_RSZ                            0x4
+
+#define QSYS_PREEMPTION_CFG_RSZ                           0x4
+
+#define QSYS_PREEMPTION_CFG_P_QUEUES(x)                   ((x) & GENMASK(7, 0))
+#define QSYS_PREEMPTION_CFG_P_QUEUES_M                    GENMASK(7, 0)
+#define QSYS_PREEMPTION_CFG_MM_ADD_FRAG_SIZE(x)           (((x) << 8) & GENMASK(9, 8))
+#define QSYS_PREEMPTION_CFG_MM_ADD_FRAG_SIZE_M            GENMASK(9, 8)
+#define QSYS_PREEMPTION_CFG_MM_ADD_FRAG_SIZE_X(x)         (((x) & GENMASK(9, 8)) >> 8)
+#define QSYS_PREEMPTION_CFG_STRICT_IPG(x)                 (((x) << 12) & GENMASK(13, 12))
+#define QSYS_PREEMPTION_CFG_STRICT_IPG_M                  GENMASK(13, 12)
+#define QSYS_PREEMPTION_CFG_STRICT_IPG_X(x)               (((x) & GENMASK(13, 12)) >> 12)
+#define QSYS_PREEMPTION_CFG_HOLD_ADVANCE(x)               (((x) << 16) & GENMASK(31, 16))
+#define QSYS_PREEMPTION_CFG_HOLD_ADVANCE_M                GENMASK(31, 16)
+#define QSYS_PREEMPTION_CFG_HOLD_ADVANCE_X(x)             (((x) & GENMASK(31, 16)) >> 16)
+
+#define QSYS_CIR_CFG_GSZ                                  0x80
+
+#define QSYS_CIR_CFG_CIR_RATE(x)                          (((x) << 6) & GENMASK(20, 6))
+#define QSYS_CIR_CFG_CIR_RATE_M                           GENMASK(20, 6)
+#define QSYS_CIR_CFG_CIR_RATE_X(x)                        (((x) & GENMASK(20, 6)) >> 6)
+#define QSYS_CIR_CFG_CIR_BURST(x)                         ((x) & GENMASK(5, 0))
+#define QSYS_CIR_CFG_CIR_BURST_M                          GENMASK(5, 0)
+
+#define QSYS_EIR_CFG_GSZ                                  0x80
+
+#define QSYS_EIR_CFG_EIR_RATE(x)                          (((x) << 7) & GENMASK(21, 7))
+#define QSYS_EIR_CFG_EIR_RATE_M                           GENMASK(21, 7)
+#define QSYS_EIR_CFG_EIR_RATE_X(x)                        (((x) & GENMASK(21, 7)) >> 7)
+#define QSYS_EIR_CFG_EIR_BURST(x)                         (((x) << 1) & GENMASK(6, 1))
+#define QSYS_EIR_CFG_EIR_BURST_M                          GENMASK(6, 1)
+#define QSYS_EIR_CFG_EIR_BURST_X(x)                       (((x) & GENMASK(6, 1)) >> 1)
+#define QSYS_EIR_CFG_EIR_MARK_ENA                         BIT(0)
+
+#define QSYS_SE_CFG_GSZ                                   0x80
+
+#define QSYS_SE_CFG_SE_DWRR_CNT(x)                        (((x) << 6) & GENMASK(9, 6))
+#define QSYS_SE_CFG_SE_DWRR_CNT_M                         GENMASK(9, 6)
+#define QSYS_SE_CFG_SE_DWRR_CNT_X(x)                      (((x) & GENMASK(9, 6)) >> 6)
+#define QSYS_SE_CFG_SE_RR_ENA                             BIT(5)
+#define QSYS_SE_CFG_SE_AVB_ENA                            BIT(4)
+#define QSYS_SE_CFG_SE_FRM_MODE(x)                        (((x) << 2) & GENMASK(3, 2))
+#define QSYS_SE_CFG_SE_FRM_MODE_M                         GENMASK(3, 2)
+#define QSYS_SE_CFG_SE_FRM_MODE_X(x)                      (((x) & GENMASK(3, 2)) >> 2)
+#define QSYS_SE_CFG_SE_EXC_ENA                            BIT(1)
+#define QSYS_SE_CFG_SE_EXC_FWD                            BIT(0)
+
+#define QSYS_SE_DWRR_CFG_GSZ                              0x80
+#define QSYS_SE_DWRR_CFG_RSZ                              0x4
+
+#define QSYS_SE_CONNECT_GSZ                               0x80
+
+#define QSYS_SE_CONNECT_SE_OUTP_IDX(x)                    (((x) << 17) & GENMASK(24, 17))
+#define QSYS_SE_CONNECT_SE_OUTP_IDX_M                     GENMASK(24, 17)
+#define QSYS_SE_CONNECT_SE_OUTP_IDX_X(x)                  (((x) & GENMASK(24, 17)) >> 17)
+#define QSYS_SE_CONNECT_SE_INP_IDX(x)                     (((x) << 9) & GENMASK(16, 9))
+#define QSYS_SE_CONNECT_SE_INP_IDX_M                      GENMASK(16, 9)
+#define QSYS_SE_CONNECT_SE_INP_IDX_X(x)                   (((x) & GENMASK(16, 9)) >> 9)
+#define QSYS_SE_CONNECT_SE_OUTP_CON(x)                    (((x) << 5) & GENMASK(8, 5))
+#define QSYS_SE_CONNECT_SE_OUTP_CON_M                     GENMASK(8, 5)
+#define QSYS_SE_CONNECT_SE_OUTP_CON_X(x)                  (((x) & GENMASK(8, 5)) >> 5)
+#define QSYS_SE_CONNECT_SE_INP_CNT(x)                     (((x) << 1) & GENMASK(4, 1))
+#define QSYS_SE_CONNECT_SE_INP_CNT_M                      GENMASK(4, 1)
+#define QSYS_SE_CONNECT_SE_INP_CNT_X(x)                   (((x) & GENMASK(4, 1)) >> 1)
+#define QSYS_SE_CONNECT_SE_TERMINAL                       BIT(0)
+
+#define QSYS_SE_DLB_SENSE_GSZ                             0x80
+
+#define QSYS_SE_DLB_SENSE_SE_DLB_PRIO(x)                  (((x) << 11) & GENMASK(13, 11))
+#define QSYS_SE_DLB_SENSE_SE_DLB_PRIO_M                   GENMASK(13, 11)
+#define QSYS_SE_DLB_SENSE_SE_DLB_PRIO_X(x)                (((x) & GENMASK(13, 11)) >> 11)
+#define QSYS_SE_DLB_SENSE_SE_DLB_SPORT(x)                 (((x) << 7) & GENMASK(10, 7))
+#define QSYS_SE_DLB_SENSE_SE_DLB_SPORT_M                  GENMASK(10, 7)
+#define QSYS_SE_DLB_SENSE_SE_DLB_SPORT_X(x)               (((x) & GENMASK(10, 7)) >> 7)
+#define QSYS_SE_DLB_SENSE_SE_DLB_DPORT(x)                 (((x) << 3) & GENMASK(6, 3))
+#define QSYS_SE_DLB_SENSE_SE_DLB_DPORT_M                  GENMASK(6, 3)
+#define QSYS_SE_DLB_SENSE_SE_DLB_DPORT_X(x)               (((x) & GENMASK(6, 3)) >> 3)
+#define QSYS_SE_DLB_SENSE_SE_DLB_PRIO_ENA                 BIT(2)
+#define QSYS_SE_DLB_SENSE_SE_DLB_SPORT_ENA                BIT(1)
+#define QSYS_SE_DLB_SENSE_SE_DLB_DPORT_ENA                BIT(0)
+
+#define QSYS_CIR_STATE_GSZ                                0x80
+
+#define QSYS_CIR_STATE_CIR_LVL(x)                         (((x) << 4) & GENMASK(25, 4))
+#define QSYS_CIR_STATE_CIR_LVL_M                          GENMASK(25, 4)
+#define QSYS_CIR_STATE_CIR_LVL_X(x)                       (((x) & GENMASK(25, 4)) >> 4)
+#define QSYS_CIR_STATE_SHP_TIME(x)                        ((x) & GENMASK(3, 0))
+#define QSYS_CIR_STATE_SHP_TIME_M                         GENMASK(3, 0)
+
+#define QSYS_EIR_STATE_GSZ                                0x80
+
+#define QSYS_SE_STATE_GSZ                                 0x80
+
+#define QSYS_SE_STATE_SE_OUTP_LVL(x)                      (((x) << 1) & GENMASK(2, 1))
+#define QSYS_SE_STATE_SE_OUTP_LVL_M                       GENMASK(2, 1)
+#define QSYS_SE_STATE_SE_OUTP_LVL_X(x)                    (((x) & GENMASK(2, 1)) >> 1)
+#define QSYS_SE_STATE_SE_WAS_YEL                          BIT(0)
+
+#define QSYS_HSCH_MISC_CFG_SE_CONNECT_VLD                 BIT(8)
+#define QSYS_HSCH_MISC_CFG_FRM_ADJ(x)                     (((x) << 3) & GENMASK(7, 3))
+#define QSYS_HSCH_MISC_CFG_FRM_ADJ_M                      GENMASK(7, 3)
+#define QSYS_HSCH_MISC_CFG_FRM_ADJ_X(x)                   (((x) & GENMASK(7, 3)) >> 3)
+#define QSYS_HSCH_MISC_CFG_LEAK_DIS                       BIT(2)
+#define QSYS_HSCH_MISC_CFG_QSHP_EXC_ENA                   BIT(1)
+#define QSYS_HSCH_MISC_CFG_PFC_BYP_UPD                    BIT(0)
+
+#define QSYS_TAG_CONFIG_RSZ                               0x4
+
+#define QSYS_TAG_CONFIG_ENABLE                            BIT(0)
+#define QSYS_TAG_CONFIG_LINK_SPEED(x)                     (((x) << 4) & GENMASK(5, 4))
+#define QSYS_TAG_CONFIG_LINK_SPEED_M                      GENMASK(5, 4)
+#define QSYS_TAG_CONFIG_LINK_SPEED_X(x)                   (((x) & GENMASK(5, 4)) >> 4)
+#define QSYS_TAG_CONFIG_INIT_GATE_STATE(x)                (((x) << 8) & GENMASK(15, 8))
+#define QSYS_TAG_CONFIG_INIT_GATE_STATE_M                 GENMASK(15, 8)
+#define QSYS_TAG_CONFIG_INIT_GATE_STATE_X(x)              (((x) & GENMASK(15, 8)) >> 8)
+#define QSYS_TAG_CONFIG_SCH_TRAFFIC_QUEUES(x)             (((x) << 16) & GENMASK(23, 16))
+#define QSYS_TAG_CONFIG_SCH_TRAFFIC_QUEUES_M              GENMASK(23, 16)
+#define QSYS_TAG_CONFIG_SCH_TRAFFIC_QUEUES_X(x)           (((x) & GENMASK(23, 16)) >> 16)
+
+#define QSYS_TAS_PARAM_CFG_CTRL_PORT_NUM(x)               ((x) & GENMASK(7, 0))
+#define QSYS_TAS_PARAM_CFG_CTRL_PORT_NUM_M                GENMASK(7, 0)
+#define QSYS_TAS_PARAM_CFG_CTRL_ALWAYS_GUARD_BAND_SCH_Q   BIT(8)
+#define QSYS_TAS_PARAM_CFG_CTRL_CONFIG_CHANGE             BIT(16)
+
+#define QSYS_PORT_MAX_SDU_RSZ                             0x4
+
+#define QSYS_PARAM_CFG_REG_3_BASE_TIME_SEC_MSB(x)         ((x) & GENMASK(15, 0))
+#define QSYS_PARAM_CFG_REG_3_BASE_TIME_SEC_MSB_M          GENMASK(15, 0)
+#define QSYS_PARAM_CFG_REG_3_LIST_LENGTH(x)               (((x) << 16) & GENMASK(31, 16))
+#define QSYS_PARAM_CFG_REG_3_LIST_LENGTH_M                GENMASK(31, 16)
+#define QSYS_PARAM_CFG_REG_3_LIST_LENGTH_X(x)             (((x) & GENMASK(31, 16)) >> 16)
+
+#define QSYS_GCL_CFG_REG_1_GCL_ENTRY_NUM(x)               ((x) & GENMASK(5, 0))
+#define QSYS_GCL_CFG_REG_1_GCL_ENTRY_NUM_M                GENMASK(5, 0)
+#define QSYS_GCL_CFG_REG_1_GATE_STATE(x)                  (((x) << 8) & GENMASK(15, 8))
+#define QSYS_GCL_CFG_REG_1_GATE_STATE_M                   GENMASK(15, 8)
+#define QSYS_GCL_CFG_REG_1_GATE_STATE_X(x)                (((x) & GENMASK(15, 8)) >> 8)
+
+#define QSYS_PARAM_STATUS_REG_3_BASE_TIME_SEC_MSB(x)      ((x) & GENMASK(15, 0))
+#define QSYS_PARAM_STATUS_REG_3_BASE_TIME_SEC_MSB_M       GENMASK(15, 0)
+#define QSYS_PARAM_STATUS_REG_3_LIST_LENGTH(x)            (((x) << 16) & GENMASK(31, 16))
+#define QSYS_PARAM_STATUS_REG_3_LIST_LENGTH_M             GENMASK(31, 16)
+#define QSYS_PARAM_STATUS_REG_3_LIST_LENGTH_X(x)          (((x) & GENMASK(31, 16)) >> 16)
+
+#define QSYS_PARAM_STATUS_REG_8_CFG_CHG_TIME_SEC_MSB(x)   ((x) & GENMASK(15, 0))
+#define QSYS_PARAM_STATUS_REG_8_CFG_CHG_TIME_SEC_MSB_M    GENMASK(15, 0)
+#define QSYS_PARAM_STATUS_REG_8_OPER_GATE_STATE(x)        (((x) << 16) & GENMASK(23, 16))
+#define QSYS_PARAM_STATUS_REG_8_OPER_GATE_STATE_M         GENMASK(23, 16)
+#define QSYS_PARAM_STATUS_REG_8_OPER_GATE_STATE_X(x)      (((x) & GENMASK(23, 16)) >> 16)
+#define QSYS_PARAM_STATUS_REG_8_CONFIG_PENDING            BIT(24)
+
+#define QSYS_GCL_STATUS_REG_1_GCL_ENTRY_NUM(x)            ((x) & GENMASK(5, 0))
+#define QSYS_GCL_STATUS_REG_1_GCL_ENTRY_NUM_M             GENMASK(5, 0)
+#define QSYS_GCL_STATUS_REG_1_GATE_STATE(x)               (((x) << 8) & GENMASK(15, 8))
+#define QSYS_GCL_STATUS_REG_1_GATE_STATE_M                GENMASK(15, 8)
+#define QSYS_GCL_STATUS_REG_1_GATE_STATE_X(x)             (((x) & GENMASK(15, 8)) >> 8)
+
+#endif