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linuxdebug/drivers/net/ethernet/apm/xgene/xgene_enet_hw.h

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null pointer error
2024-07-16 15:50:57 +02:00
/* SPDX-License-Identifier: GPL-2.0-or-later */
/* Applied Micro X-Gene SoC Ethernet Driver
*
* Copyright (c) 2014, Applied Micro Circuits Corporation
* Authors: Iyappan Subramanian <isubramanian@apm.com>
* Ravi Patel <rapatel@apm.com>
* Keyur Chudgar <kchudgar@apm.com>
*/
#ifndef __XGENE_ENET_HW_H__
#define __XGENE_ENET_HW_H__
#include "xgene_enet_main.h"
struct xgene_enet_pdata;
struct xgene_enet_stats;
struct xgene_enet_desc_ring;
/* clears and then set bits */
static inline void xgene_set_bits(u32 *dst, u32 val, u32 start, u32 len)
{
u32 end = start + len - 1;
u32 mask = GENMASK(end, start);
*dst &= ~mask;
*dst |= (val << start) & mask;
}
static inline u32 xgene_get_bits(u32 val, u32 start, u32 end)
{
return (val & GENMASK(end, start)) >> start;
}
enum xgene_enet_rm {
RM0,
RM1,
RM3 = 3
};
#define CSR_RING_ID 0x0008
#define OVERWRITE BIT(31)
#define IS_BUFFER_POOL BIT(20)
#define PREFETCH_BUF_EN BIT(21)
#define CSR_RING_ID_BUF 0x000c
#define CSR_PBM_COAL 0x0014
#define CSR_PBM_CTICK0 0x0018
#define CSR_PBM_CTICK1 0x001c
#define CSR_PBM_CTICK2 0x0020
#define CSR_PBM_CTICK3 0x0024
#define CSR_THRESHOLD0_SET1 0x0030
#define CSR_THRESHOLD1_SET1 0x0034
#define CSR_RING_NE_INT_MODE 0x017c
#define CSR_RING_CONFIG 0x006c
#define CSR_RING_WR_BASE 0x0070
#define NUM_RING_CONFIG 5
#define BUFPOOL_MODE 3
#define INC_DEC_CMD_ADDR 0x002c
#define UDP_HDR_SIZE 2
#define BUF_LEN_CODE_2K 0x5000
#define CREATE_MASK(pos, len) GENMASK((pos)+(len)-1, (pos))
#define CREATE_MASK_ULL(pos, len) GENMASK_ULL((pos)+(len)-1, (pos))
/* Empty slot soft signature */
#define EMPTY_SLOT_INDEX 1
#define EMPTY_SLOT ~0ULL
#define WORK_DESC_SIZE 32
#define BUFPOOL_DESC_SIZE 16
#define RING_OWNER_MASK GENMASK(9, 6)
#define RING_BUFNUM_MASK GENMASK(5, 0)
#define SELTHRSH_POS 3
#define SELTHRSH_LEN 3
#define RINGADDRL_POS 5
#define RINGADDRL_LEN 27
#define RINGADDRH_POS 0
#define RINGADDRH_LEN 7
#define RINGSIZE_POS 23
#define RINGSIZE_LEN 3
#define RINGTYPE_POS 19
#define RINGTYPE_LEN 2
#define RINGMODE_POS 20
#define RINGMODE_LEN 3
#define RECOMTIMEOUTL_POS 28
#define RECOMTIMEOUTL_LEN 4
#define RECOMTIMEOUTH_POS 0
#define RECOMTIMEOUTH_LEN 3
#define NUMMSGSINQ_POS 1
#define NUMMSGSINQ_LEN 16
#define ACCEPTLERR BIT(19)
#define QCOHERENT BIT(4)
#define RECOMBBUF BIT(27)
#define MAC_OFFSET 0x30
#define OFFSET_4 0x04
#define OFFSET_8 0x08
#define BLOCK_ETH_CSR_OFFSET 0x2000
#define BLOCK_ETH_CLE_CSR_OFFSET 0x6000
#define BLOCK_ETH_RING_IF_OFFSET 0x9000
#define BLOCK_ETH_CLKRST_CSR_OFFSET 0xc000
#define BLOCK_ETH_DIAG_CSR_OFFSET 0xD000
#define BLOCK_ETH_MAC_OFFSET 0x0000
#define BLOCK_ETH_STATS_OFFSET 0x0000
#define BLOCK_ETH_MAC_CSR_OFFSET 0x2800
#define CLKEN_ADDR 0xc208
#define SRST_ADDR 0xc200
#define MAC_ADDR_REG_OFFSET 0x00
#define MAC_COMMAND_REG_OFFSET 0x04
#define MAC_WRITE_REG_OFFSET 0x08
#define MAC_READ_REG_OFFSET 0x0c
#define MAC_COMMAND_DONE_REG_OFFSET 0x10
#define STAT_ADDR_REG_OFFSET 0x14
#define STAT_COMMAND_REG_OFFSET 0x18
#define STAT_WRITE_REG_OFFSET 0x1c
#define STAT_READ_REG_OFFSET 0x20
#define STAT_COMMAND_DONE_REG_OFFSET 0x24
#define PCS_ADDR_REG_OFFSET 0x00
#define PCS_COMMAND_REG_OFFSET 0x04
#define PCS_WRITE_REG_OFFSET 0x08
#define PCS_READ_REG_OFFSET 0x0c
#define PCS_COMMAND_DONE_REG_OFFSET 0x10
#define MII_MGMT_CONFIG_ADDR 0x20
#define MII_MGMT_COMMAND_ADDR 0x24
#define MII_MGMT_ADDRESS_ADDR 0x28
#define MII_MGMT_CONTROL_ADDR 0x2c
#define MII_MGMT_STATUS_ADDR 0x30
#define MII_MGMT_INDICATORS_ADDR 0x34
#define BUSY_MASK BIT(0)
#define READ_CYCLE_MASK BIT(0)
#define PHY_CONTROL_SET(dst, val) xgene_set_bits(dst, val, 0, 16)
#define ENET_SPARE_CFG_REG_ADDR 0x0750
#define RSIF_CONFIG_REG_ADDR 0x0010
#define RSIF_RAM_DBG_REG0_ADDR 0x0048
#define RGMII_REG_0_ADDR 0x07e0
#define CFG_LINK_AGGR_RESUME_0_ADDR 0x07c8
#define DEBUG_REG_ADDR 0x0700
#define CFG_BYPASS_ADDR 0x0294
#define CLE_BYPASS_REG0_0_ADDR 0x0490
#define CLE_BYPASS_REG1_0_ADDR 0x0494
#define CFG_RSIF_FPBUFF_TIMEOUT_EN BIT(31)
#define RESUME_TX BIT(0)
#define CFG_SPEED_1250 BIT(24)
#define TX_PORT0 BIT(0)
#define CFG_BYPASS_UNISEC_TX BIT(2)
#define CFG_BYPASS_UNISEC_RX BIT(1)
#define CFG_CLE_BYPASS_EN0 BIT(31)
#define CFG_TXCLK_MUXSEL0_SET(dst, val) xgene_set_bits(dst, val, 29, 3)
#define CFG_RXCLK_MUXSEL0_SET(dst, val) xgene_set_bits(dst, val, 26, 3)
#define CFG_CLE_IP_PROTOCOL0_SET(dst, val) xgene_set_bits(dst, val, 16, 2)
#define CFG_CLE_IP_HDR_LEN_SET(dst, val) xgene_set_bits(dst, val, 8, 5)
#define CFG_CLE_DSTQID0_SET(dst, val) xgene_set_bits(dst, val, 0, 12)
#define CFG_CLE_FPSEL0_SET(dst, val) xgene_set_bits(dst, val, 16, 4)
#define CFG_CLE_NXTFPSEL0_SET(dst, val) xgene_set_bits(dst, val, 20, 4)
#define CFG_MACMODE_SET(dst, val) xgene_set_bits(dst, val, 18, 2)
#define CFG_WAITASYNCRD_SET(dst, val) xgene_set_bits(dst, val, 0, 16)
#define CFG_CLE_DSTQID0(val) ((val) & GENMASK(11, 0))
#define CFG_CLE_FPSEL0(val) (((val) << 16) & GENMASK(19, 16))
#define CSR_ECM_CFG_0_ADDR 0x0220
#define CSR_ECM_CFG_1_ADDR 0x0224
#define CSR_MULTI_DPF0_ADDR 0x0230
#define RXBUF_PAUSE_THRESH 0x0534
#define RXBUF_PAUSE_OFF_THRESH 0x0540
#define DEF_PAUSE_THRES 0x7d
#define DEF_PAUSE_OFF_THRES 0x6d
#define DEF_QUANTA 0x8000
#define NORM_PAUSE_OPCODE 0x0001
#define PAUSE_XON_EN BIT(30)
#define MULTI_DPF_AUTOCTRL BIT(28)
#define CFG_CLE_NXTFPSEL0(val) (((val) << 20) & GENMASK(23, 20))
#define ICM_CONFIG0_REG_0_ADDR 0x0400
#define ICM_CONFIG2_REG_0_ADDR 0x0410
#define ECM_CONFIG0_REG_0_ADDR 0x0500
#define ECM_CONFIG0_REG_1_ADDR 0x0504
#define ICM_ECM_DROP_COUNT_REG0_ADDR 0x0508
#define ICM_ECM_DROP_COUNT_REG1_ADDR 0x050c
#define RX_DV_GATE_REG_0_ADDR 0x05fc
#define TX_DV_GATE_EN0 BIT(2)
#define RX_DV_GATE_EN0 BIT(1)
#define RESUME_RX0 BIT(0)
#define ENET_CFGSSQMIFPRESET_ADDR 0x14
#define ENET_CFGSSQMIWQRESET_ADDR 0x1c
#define ENET_CFGSSQMIWQASSOC_ADDR 0xe0
#define ENET_CFGSSQMIFPQASSOC_ADDR 0xdc
#define ENET_CFGSSQMIQMLITEFPQASSOC_ADDR 0xf0
#define ENET_CFGSSQMIQMLITEWQASSOC_ADDR 0xf4
#define ENET_CFG_MEM_RAM_SHUTDOWN_ADDR 0x70
#define ENET_BLOCK_MEM_RDY_ADDR 0x74
#define MAC_CONFIG_1_ADDR 0x00
#define MAC_CONFIG_2_ADDR 0x04
#define MAX_FRAME_LEN_ADDR 0x10
#define INTERFACE_CONTROL_ADDR 0x38
#define STATION_ADDR0_ADDR 0x40
#define STATION_ADDR1_ADDR 0x44
#define PHY_ADDR_SET(dst, val) xgene_set_bits(dst, val, 8, 5)
#define REG_ADDR_SET(dst, val) xgene_set_bits(dst, val, 0, 5)
#define ENET_INTERFACE_MODE2_SET(dst, val) xgene_set_bits(dst, val, 8, 2)
#define MGMT_CLOCK_SEL_SET(dst, val) xgene_set_bits(dst, val, 0, 3)
#define SOFT_RESET1 BIT(31)
#define TX_EN BIT(0)
#define RX_EN BIT(2)
#define TX_FLOW_EN BIT(4)
#define RX_FLOW_EN BIT(5)
#define ENET_LHD_MODE BIT(25)
#define ENET_GHD_MODE BIT(26)
#define FULL_DUPLEX2 BIT(0)
#define PAD_CRC BIT(2)
#define LENGTH_CHK BIT(4)
#define TR64_ADDR 0x20
#define TR127_ADDR 0x21
#define TR255_ADDR 0x22
#define TR511_ADDR 0x23
#define TR1K_ADDR 0x24
#define TRMAX_ADDR 0x25
#define TRMGV_ADDR 0x26
#define RFCS_ADDR 0x29
#define RMCA_ADDR 0x2a
#define RBCA_ADDR 0x2b
#define RXCF_ADDR 0x2c
#define RXPF_ADDR 0x2d
#define RXUO_ADDR 0x2e
#define RALN_ADDR 0x2f
#define RFLR_ADDR 0x30
#define RCDE_ADDR 0x31
#define RCSE_ADDR 0x32
#define RUND_ADDR 0x33
#define ROVR_ADDR 0x34
#define RFRG_ADDR 0x35
#define RJBR_ADDR 0x36
#define RDRP_ADDR 0x37
#define TMCA_ADDR 0x3a
#define TBCA_ADDR 0x3b
#define TXPF_ADDR 0x3c
#define TDFR_ADDR 0x3d
#define TEDF_ADDR 0x3e
#define TSCL_ADDR 0x3f
#define TMCL_ADDR 0x40
#define TLCL_ADDR 0x41
#define TXCL_ADDR 0x42
#define TNCL_ADDR 0x43
#define TPFH_ADDR 0x44
#define TDRP_ADDR 0x45
#define TJBR_ADDR 0x46
#define TFCS_ADDR 0x47
#define TXCF_ADDR 0x48
#define TOVR_ADDR 0x49
#define TUND_ADDR 0x4a
#define TFRG_ADDR 0x4b
#define DUMP_ADDR 0x27
#define ECM_DROP_COUNT(src) xgene_get_bits(src, 0, 15)
#define ICM_DROP_COUNT(src) xgene_get_bits(src, 16, 31)
#define TSO_IPPROTO_TCP 1
#define USERINFO_POS 0
#define USERINFO_LEN 32
#define FPQNUM_POS 32
#define FPQNUM_LEN 12
#define ELERR_POS 46
#define ELERR_LEN 2
#define NV_POS 50
#define NV_LEN 1
#define LL_POS 51
#define LL_LEN 1
#define LERR_POS 60
#define LERR_LEN 3
#define STASH_POS 52
#define STASH_LEN 2
#define BUFDATALEN_POS 48
#define BUFDATALEN_LEN 15
#define DATAADDR_POS 0
#define DATAADDR_LEN 42
#define COHERENT_POS 63
#define HENQNUM_POS 48
#define HENQNUM_LEN 12
#define TYPESEL_POS 44
#define TYPESEL_LEN 4
#define ETHHDR_POS 12
#define ETHHDR_LEN 8
#define IC_POS 35 /* Insert CRC */
#define TCPHDR_POS 0
#define TCPHDR_LEN 6
#define IPHDR_POS 6
#define IPHDR_LEN 6
#define MSS_POS 20
#define MSS_LEN 2
#define EC_POS 22 /* Enable checksum */
#define EC_LEN 1
#define ET_POS 23 /* Enable TSO */
#define IS_POS 24 /* IP protocol select */
#define IS_LEN 1
#define TYPE_ETH_WORK_MESSAGE_POS 44
#define LL_BYTES_MSB_POS 56
#define LL_BYTES_MSB_LEN 8
#define LL_BYTES_LSB_POS 48
#define LL_BYTES_LSB_LEN 12
#define LL_LEN_POS 48
#define LL_LEN_LEN 8
#define DATALEN_MASK GENMASK(11, 0)
#define LAST_BUFFER (0x7800ULL << BUFDATALEN_POS)
#define TSO_MSS0_POS 0
#define TSO_MSS0_LEN 14
#define TSO_MSS1_POS 16
#define TSO_MSS1_LEN 14
struct xgene_enet_raw_desc {
__le64 m0;
__le64 m1;
__le64 m2;
__le64 m3;
};
struct xgene_enet_raw_desc16 {
__le64 m0;
__le64 m1;
};
static inline void xgene_enet_mark_desc_slot_empty(void *desc_slot_ptr)
{
__le64 *desc_slot = desc_slot_ptr;
desc_slot[EMPTY_SLOT_INDEX] = cpu_to_le64(EMPTY_SLOT);
}
static inline bool xgene_enet_is_desc_slot_empty(void *desc_slot_ptr)
{
__le64 *desc_slot = desc_slot_ptr;
return (desc_slot[EMPTY_SLOT_INDEX] == cpu_to_le64(EMPTY_SLOT));
}
enum xgene_enet_ring_cfgsize {
RING_CFGSIZE_512B,
RING_CFGSIZE_2KB,
RING_CFGSIZE_16KB,
RING_CFGSIZE_64KB,
RING_CFGSIZE_512KB,
RING_CFGSIZE_INVALID
};
enum xgene_enet_ring_type {
RING_DISABLED,
RING_REGULAR,
RING_BUFPOOL
};
enum xgene_ring_owner {
RING_OWNER_ETH0,
RING_OWNER_ETH1,
RING_OWNER_CPU = 15,
RING_OWNER_INVALID
};
enum xgene_enet_ring_bufnum {
RING_BUFNUM_REGULAR = 0x0,
RING_BUFNUM_BUFPOOL = 0x20,
RING_BUFNUM_INVALID
};
enum xgene_enet_err_code {
HBF_READ_DATA = 3,
HBF_LL_READ = 4,
BAD_WORK_MSG = 6,
BUFPOOL_TIMEOUT = 15,
INGRESS_CRC = 16,
INGRESS_CHECKSUM = 17,
INGRESS_TRUNC_FRAME = 18,
INGRESS_PKT_LEN = 19,
INGRESS_PKT_UNDER = 20,
INGRESS_FIFO_OVERRUN = 21,
INGRESS_CHECKSUM_COMPUTE = 26,
ERR_CODE_INVALID
};
static inline enum xgene_ring_owner xgene_enet_ring_owner(u16 id)
{
return (id & RING_OWNER_MASK) >> 6;
}
static inline u8 xgene_enet_ring_bufnum(u16 id)
{
return id & RING_BUFNUM_MASK;
}
static inline bool xgene_enet_is_bufpool(u16 id)
{
return ((id & RING_BUFNUM_MASK) >= 0x20) ? true : false;
}
static inline u8 xgene_enet_get_fpsel(u16 id)
{
if (xgene_enet_is_bufpool(id))
return xgene_enet_ring_bufnum(id) - RING_BUFNUM_BUFPOOL;
return 0;
}
static inline u16 xgene_enet_get_numslots(u16 id, u32 size)
{
bool is_bufpool = xgene_enet_is_bufpool(id);
return (is_bufpool) ? size / BUFPOOL_DESC_SIZE :
size / WORK_DESC_SIZE;
}
void xgene_enet_parse_error(struct xgene_enet_desc_ring *ring,
enum xgene_enet_err_code status);
int xgene_enet_mdio_config(struct xgene_enet_pdata *pdata);
void xgene_enet_mdio_remove(struct xgene_enet_pdata *pdata);
bool xgene_ring_mgr_init(struct xgene_enet_pdata *p);
int xgene_enet_phy_connect(struct net_device *ndev);
void xgene_enet_phy_disconnect(struct xgene_enet_pdata *pdata);
u32 xgene_enet_rd_mac(struct xgene_enet_pdata *pdata, u32 rd_addr);
void xgene_enet_wr_mac(struct xgene_enet_pdata *pdata, u32 wr_addr,
u32 wr_data);
u32 xgene_enet_rd_stat(struct xgene_enet_pdata *pdata, u32 rd_addr);
extern const struct xgene_mac_ops xgene_gmac_ops;
extern const struct xgene_port_ops xgene_gport_ops;
extern struct xgene_ring_ops xgene_ring1_ops;
#endif /* __XGENE_ENET_HW_H__ */