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/* 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>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __XGENE_ENET_HW_H__
#define __XGENE_ENET_HW_H__
#include "xgene_enet_main.h"
struct xgene_enet_pdata;
struct xgene_enet_stats;
/* 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_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 6
#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 3
#define RECOMTIMEOUTH_POS 0
#define RECOMTIMEOUTH_LEN 2
#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 BLOCK_ETH_CSR_OFFSET 0x2000
#define BLOCK_ETH_RING_IF_OFFSET 0x9000
#define BLOCK_ETH_DIAG_CSR_OFFSET 0xD000
#define BLOCK_ETH_MAC_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 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_CLE_IP_PROTOCOL0_SET(dst, val) xgene_set_bits(dst, val, 16, 2)
#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_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 ICM_CONFIG0_REG_0_ADDR 0x0400
#define ICM_CONFIG2_REG_0_ADDR 0x0410
#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_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 ENET_LHD_MODE BIT(25)
#define ENET_GHD_MODE BIT(26)
#define FULL_DUPLEX2 BIT(0)
#define SCAN_AUTO_INCR BIT(5)
#define TBYT_ADDR 0x38
#define TPKT_ADDR 0x39
#define TDRP_ADDR 0x45
#define TFCS_ADDR 0x47
#define TUND_ADDR 0x4a
#define TSO_IPPROTO_TCP 1
#define USERINFO_POS 0
#define USERINFO_LEN 32
#define FPQNUM_POS 32
#define FPQNUM_LEN 12
#define LERR_POS 60
#define LERR_LEN 3
#define STASH_POS 52
#define STASH_LEN 2
#define BUFDATALEN_POS 48
#define BUFDATALEN_LEN 12
#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 EC_POS 22 /* Enable checksum */
#define EC_LEN 1
#define IS_POS 24 /* IP protocol select */
#define IS_LEN 1
#define TYPE_ETH_WORK_MESSAGE_POS 44
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_CPU = 15,
RING_OWNER_INVALID
};
enum xgene_enet_ring_bufnum {
RING_BUFNUM_REGULAR = 0x0,
RING_BUFNUM_BUFPOOL = 0x20,
RING_BUFNUM_INVALID
};
enum xgene_enet_cmd {
XGENE_ENET_WR_CMD = BIT(31),
XGENE_ENET_RD_CMD = BIT(30)
};
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 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;
}
struct xgene_enet_desc_ring *xgene_enet_setup_ring(
struct xgene_enet_desc_ring *ring);
void xgene_enet_clear_ring(struct xgene_enet_desc_ring *ring);
void xgene_enet_parse_error(struct xgene_enet_desc_ring *ring,
struct xgene_enet_pdata *pdata,
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);
extern struct xgene_mac_ops xgene_gmac_ops;
extern struct xgene_port_ops xgene_gport_ops;
#endif /* __XGENE_ENET_HW_H__ */
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