1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* Marvell OcteonTx2 RPM driver 3 * 4 * Copyright (C) 2020 Marvell. 5 */ 6 7 #ifndef LMAC_COMMON_H 8 #define LMAC_COMMON_H 9 10 #include "rvu.h" 11 #include "cgx.h" 12 /** 13 * struct lmac - per lmac locks and properties 14 * @wq_cmd_cmplt: waitq to keep the process blocked until cmd completion 15 * @cmd_lock: Lock to serialize the command interface 16 * @resp: command response 17 * @link_info: link related information 18 * @mac_to_index_bmap: Mac address to CGX table index mapping 19 * @event_cb: callback for linkchange events 20 * @event_cb_lock: lock for serializing callback with unregister 21 * @cgx: parent cgx port 22 * @mcast_filters_count: Number of multicast filters installed 23 * @lmac_id: lmac port id 24 * @cmd_pend: flag set before new command is started 25 * flag cleared after command response is received 26 * @name: lmac port name 27 */ 28 struct lmac { 29 wait_queue_head_t wq_cmd_cmplt; 30 /* Lock to serialize the command interface */ 31 struct mutex cmd_lock; 32 u64 resp; 33 struct cgx_link_user_info link_info; 34 struct rsrc_bmap mac_to_index_bmap; 35 struct cgx_event_cb event_cb; 36 /* lock for serializing callback with unregister */ 37 spinlock_t event_cb_lock; 38 struct cgx *cgx; 39 u8 mcast_filters_count; 40 u8 lmac_id; 41 bool cmd_pend; 42 char *name; 43 }; 44 45 /* CGX & RPM has different feature set 46 * update the structure fields with different one 47 */ 48 struct mac_ops { 49 char *name; 50 /* Features like RXSTAT, TXSTAT, DMAC FILTER csrs differs by fixed 51 * bar offset for example 52 * CGX DMAC_CTL0 0x1f8 53 * RPM DMAC_CTL0 0x4ff8 54 */ 55 u64 csr_offset; 56 /* For ATF to send events to kernel, there is no dedicated interrupt 57 * defined hence CGX uses OVERFLOW bit in CMR_INT. RPM block supports 58 * SW_INT so that ATF triggers this interrupt after processing of 59 * requested command 60 */ 61 u64 int_register; 62 u64 int_set_reg; 63 /* lmac offset is different is RPM */ 64 u8 lmac_offset; 65 u8 irq_offset; 66 u8 int_ena_bit; 67 u8 lmac_fwi; 68 u32 fifo_len; 69 bool non_contiguous_serdes_lane; 70 /* RPM & CGX differs in number of Receive/transmit stats */ 71 u8 rx_stats_cnt; 72 u8 tx_stats_cnt; 73 /* Incase of RPM get number of lmacs from RPMX_CMR_RX_LMACS[LMAC_EXIST] 74 * number of setbits in lmac_exist tells number of lmacs 75 */ 76 int (*get_nr_lmacs)(void *cgx); 77 u8 (*get_lmac_type)(void *cgx, int lmac_id); 78 int (*mac_lmac_intl_lbk)(void *cgx, int lmac_id, 79 bool enable); 80 /* Register Stats related functions */ 81 int (*mac_get_rx_stats)(void *cgx, int lmac_id, 82 int idx, u64 *rx_stat); 83 int (*mac_get_tx_stats)(void *cgx, int lmac_id, 84 int idx, u64 *tx_stat); 85 86 /* Enable LMAC Pause Frame Configuration */ 87 void (*mac_enadis_rx_pause_fwding)(void *cgxd, 88 int lmac_id, 89 bool enable); 90 91 int (*mac_get_pause_frm_status)(void *cgxd, 92 int lmac_id, 93 u8 *tx_pause, 94 u8 *rx_pause); 95 96 int (*mac_enadis_pause_frm)(void *cgxd, 97 int lmac_id, 98 u8 tx_pause, 99 u8 rx_pause); 100 101 void (*mac_pause_frm_config)(void *cgxd, 102 int lmac_id, 103 bool enable); 104 }; 105 106 struct cgx { 107 void __iomem *reg_base; 108 struct pci_dev *pdev; 109 u8 cgx_id; 110 u8 lmac_count; 111 struct lmac *lmac_idmap[MAX_LMAC_PER_CGX]; 112 struct work_struct cgx_cmd_work; 113 struct workqueue_struct *cgx_cmd_workq; 114 struct list_head cgx_list; 115 u64 hw_features; 116 struct mac_ops *mac_ops; 117 unsigned long lmac_bmap; /* bitmap of enabled lmacs */ 118 /* Lock to serialize read/write of global csrs like 119 * RPMX_MTI_STAT_DATA_HI_CDC etc 120 */ 121 struct mutex lock; 122 }; 123 124 typedef struct cgx rpm_t; 125 126 /* Function Declarations */ 127 void cgx_write(struct cgx *cgx, u64 lmac, u64 offset, u64 val); 128 u64 cgx_read(struct cgx *cgx, u64 lmac, u64 offset); 129 struct lmac *lmac_pdata(u8 lmac_id, struct cgx *cgx); 130 int cgx_fwi_cmd_send(u64 req, u64 *resp, struct lmac *lmac); 131 int cgx_fwi_cmd_generic(u64 req, u64 *resp, struct cgx *cgx, int lmac_id); 132 bool is_lmac_valid(struct cgx *cgx, int lmac_id); 133 struct mac_ops *rpm_get_mac_ops(void); 134 135 #endif /* LMAC_COMMON_H */ 136