1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* Marvell CN10K RPM driver 3 * 4 * Copyright (C) 2020 Marvell. 5 * 6 */ 7 8 #ifndef LMAC_COMMON_H 9 #define LMAC_COMMON_H 10 11 #include "rvu.h" 12 #include "cgx.h" 13 /** 14 * struct lmac - per lmac locks and properties 15 * @wq_cmd_cmplt: waitq to keep the process blocked until cmd completion 16 * @cmd_lock: Lock to serialize the command interface 17 * @resp: command response 18 * @link_info: link related information 19 * @mac_to_index_bmap: Mac address to CGX table index mapping 20 * @event_cb: callback for linkchange events 21 * @event_cb_lock: lock for serializing callback with unregister 22 * @cgx: parent cgx port 23 * @mcast_filters_count: Number of multicast filters installed 24 * @lmac_id: lmac port id 25 * @cmd_pend: flag set before new command is started 26 * flag cleared after command response is received 27 * @name: lmac port name 28 */ 29 struct lmac { 30 wait_queue_head_t wq_cmd_cmplt; 31 /* Lock to serialize the command interface */ 32 struct mutex cmd_lock; 33 u64 resp; 34 struct cgx_link_user_info link_info; 35 struct rsrc_bmap mac_to_index_bmap; 36 struct cgx_event_cb event_cb; 37 /* lock for serializing callback with unregister */ 38 spinlock_t event_cb_lock; 39 struct cgx *cgx; 40 u8 mcast_filters_count; 41 u8 lmac_id; 42 bool cmd_pend; 43 char *name; 44 }; 45 46 /* CGX & RPM has different feature set 47 * update the structure fields with different one 48 */ 49 struct mac_ops { 50 char *name; 51 /* Features like RXSTAT, TXSTAT, DMAC FILTER csrs differs by fixed 52 * bar offset for example 53 * CGX DMAC_CTL0 0x1f8 54 * RPM DMAC_CTL0 0x4ff8 55 */ 56 u64 csr_offset; 57 /* For ATF to send events to kernel, there is no dedicated interrupt 58 * defined hence CGX uses OVERFLOW bit in CMR_INT. RPM block supports 59 * SW_INT so that ATF triggers this interrupt after processing of 60 * requested command 61 */ 62 u64 int_register; 63 u64 int_set_reg; 64 /* lmac offset is different is RPM */ 65 u8 lmac_offset; 66 u8 irq_offset; 67 u8 int_ena_bit; 68 u8 lmac_fwi; 69 u32 fifo_len; 70 bool non_contiguous_serdes_lane; 71 /* RPM & CGX differs in number of Receive/transmit stats */ 72 u8 rx_stats_cnt; 73 u8 tx_stats_cnt; 74 /* Incase of RPM get number of lmacs from RPMX_CMR_RX_LMACS[LMAC_EXIST] 75 * number of setbits in lmac_exist tells number of lmacs 76 */ 77 int (*get_nr_lmacs)(void *cgx); 78 u8 (*get_lmac_type)(void *cgx, int lmac_id); 79 int (*mac_lmac_intl_lbk)(void *cgx, int lmac_id, 80 bool enable); 81 /* Register Stats related functions */ 82 int (*mac_get_rx_stats)(void *cgx, int lmac_id, 83 int idx, u64 *rx_stat); 84 int (*mac_get_tx_stats)(void *cgx, int lmac_id, 85 int idx, u64 *tx_stat); 86 87 /* Enable LMAC Pause Frame Configuration */ 88 void (*mac_enadis_rx_pause_fwding)(void *cgxd, 89 int lmac_id, 90 bool enable); 91 92 int (*mac_get_pause_frm_status)(void *cgxd, 93 int lmac_id, 94 u8 *tx_pause, 95 u8 *rx_pause); 96 97 int (*mac_enadis_pause_frm)(void *cgxd, 98 int lmac_id, 99 u8 tx_pause, 100 u8 rx_pause); 101 102 void (*mac_pause_frm_config)(void *cgxd, 103 int lmac_id, 104 bool enable); 105 }; 106 107 struct cgx { 108 void __iomem *reg_base; 109 struct pci_dev *pdev; 110 u8 cgx_id; 111 u8 lmac_count; 112 struct lmac *lmac_idmap[MAX_LMAC_PER_CGX]; 113 struct work_struct cgx_cmd_work; 114 struct workqueue_struct *cgx_cmd_workq; 115 struct list_head cgx_list; 116 u64 hw_features; 117 struct mac_ops *mac_ops; 118 unsigned long lmac_bmap; /* bitmap of enabled lmacs */ 119 /* Lock to serialize read/write of global csrs like 120 * RPMX_MTI_STAT_DATA_HI_CDC etc 121 */ 122 struct mutex lock; 123 }; 124 125 typedef struct cgx rpm_t; 126 127 /* Function Declarations */ 128 void cgx_write(struct cgx *cgx, u64 lmac, u64 offset, u64 val); 129 u64 cgx_read(struct cgx *cgx, u64 lmac, u64 offset); 130 struct lmac *lmac_pdata(u8 lmac_id, struct cgx *cgx); 131 int cgx_fwi_cmd_send(u64 req, u64 *resp, struct lmac *lmac); 132 int cgx_fwi_cmd_generic(u64 req, u64 *resp, struct cgx *cgx, int lmac_id); 133 bool is_lmac_valid(struct cgx *cgx, int lmac_id); 134 struct mac_ops *rpm_get_mac_ops(void); 135 136 #endif /* LMAC_COMMON_H */ 137