/* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */
/* Copyright 2017-2019 NXP */

#include <linux/bitops.h>

/* ENETC device IDs */
#define ENETC_DEV_ID_PF		0xe100
#define ENETC_DEV_ID_VF		0xef00
#define ENETC_DEV_ID_PTP	0xee02

/* ENETC register block BAR */
#define ENETC_BAR_REGS	0

/** SI regs, offset: 0h */
#define ENETC_SIMR	0
#define ENETC_SIMR_EN	BIT(31)
#define ENETC_SIMR_RSSE	BIT(0)
#define ENETC_SICTR0	0x18
#define ENETC_SICTR1	0x1c
#define ENETC_SIPCAPR0	0x20
#define ENETC_SIPCAPR0_PSFP	BIT(9)
#define ENETC_SIPCAPR0_RSS	BIT(8)
#define ENETC_SIPCAPR0_QBV	BIT(4)
#define ENETC_SIPCAPR0_QBU	BIT(3)
#define ENETC_SIPCAPR1	0x24
#define ENETC_SITGTGR	0x30
#define ENETC_SIRBGCR	0x38
/* cache attribute registers for transactions initiated by ENETC */
#define ENETC_SICAR0	0x40
#define ENETC_SICAR1	0x44
#define ENETC_SICAR2	0x48
/* rd snoop, no alloc
 * wr snoop, no alloc, partial cache line update for BDs and full cache line
 * update for data
 */
#define ENETC_SICAR_RD_COHERENT	0x2b2b0000
#define ENETC_SICAR_WR_COHERENT	0x00006727
#define ENETC_SICAR_MSI	0x00300030 /* rd/wr device, no snoop, no alloc */

#define ENETC_SIPMAR0	0x80
#define ENETC_SIPMAR1	0x84

/* VF-PF Message passing */
#define ENETC_DEFAULT_MSG_SIZE	1024	/* and max size */
/* msg size encoding: default and max msg value of 1024B encoded as 0 */
static inline u32 enetc_vsi_set_msize(u32 size)
{
	return size < ENETC_DEFAULT_MSG_SIZE ? size >> 5 : 0;
}

#define ENETC_PSIMSGRR	0x204
#define ENETC_PSIMSGRR_MR_MASK	GENMASK(2, 1)
#define ENETC_PSIMSGRR_MR(n) BIT((n) + 1) /* n = VSI index */
#define ENETC_PSIVMSGRCVAR0(n)	(0x210 + (n) * 0x8) /* n = VSI index */
#define ENETC_PSIVMSGRCVAR1(n)	(0x214 + (n) * 0x8)

#define ENETC_VSIMSGSR	0x204	/* RO */
#define ENETC_VSIMSGSR_MB	BIT(0)
#define ENETC_VSIMSGSR_MS	BIT(1)
#define ENETC_VSIMSGSNDAR0	0x210
#define ENETC_VSIMSGSNDAR1	0x214

#define ENETC_SIMSGSR_SET_MC(val) ((val) << 16)
#define ENETC_SIMSGSR_GET_MC(val) ((val) >> 16)

/* SI statistics */
#define ENETC_SIROCT	0x300
#define ENETC_SIRFRM	0x308
#define ENETC_SIRUCA	0x310
#define ENETC_SIRMCA	0x318
#define ENETC_SITOCT	0x320
#define ENETC_SITFRM	0x328
#define ENETC_SITUCA	0x330
#define ENETC_SITMCA	0x338
#define ENETC_RBDCR(n)	(0x8180 + (n) * 0x200)

/* Control BDR regs */
#define ENETC_SICBDRMR		0x800
#define ENETC_SICBDRSR		0x804	/* RO */
#define ENETC_SICBDRBAR0	0x810
#define ENETC_SICBDRBAR1	0x814
#define ENETC_SICBDRPIR		0x818
#define ENETC_SICBDRCIR		0x81c
#define ENETC_SICBDRLENR	0x820

#define ENETC_SICAPR0	0x900
#define ENETC_SICAPR1	0x904

#define ENETC_PSIIER	0xa00
#define ENETC_PSIIER_MR_MASK	GENMASK(2, 1)
#define ENETC_PSIIDR	0xa08
#define ENETC_SITXIDR	0xa18
#define ENETC_SIRXIDR	0xa28
#define ENETC_SIMSIVR	0xa30

#define ENETC_SIMSITRV(n) (0xB00 + (n) * 0x4)
#define ENETC_SIMSIRRV(n) (0xB80 + (n) * 0x4)

#define ENETC_SIUEFDCR	0xe28

#define ENETC_SIRFSCAPR	0x1200
#define ENETC_SIRFSCAPR_GET_NUM_RFS(val) ((val) & 0x7f)
#define ENETC_SIRSSCAPR	0x1600
#define ENETC_SIRSSCAPR_GET_NUM_RSS(val) (BIT((val) & 0xf) * 32)

/** SI BDR sub-blocks, n = 0..7 */
enum enetc_bdr_type {TX, RX};
#define ENETC_BDR_OFF(i)	((i) * 0x200)
#define ENETC_BDR(t, i, r)	(0x8000 + (t) * 0x100 + ENETC_BDR_OFF(i) + (r))
/* RX BDR reg offsets */
#define ENETC_RBMR	0
#define ENETC_RBMR_BDS	BIT(2)
#define ENETC_RBMR_CM	BIT(4)
#define ENETC_RBMR_VTE	BIT(5)
#define ENETC_RBMR_EN	BIT(31)
#define ENETC_RBSR	0x4
#define ENETC_RBBSR	0x8
#define ENETC_RBCIR	0xc
#define ENETC_RBBAR0	0x10
#define ENETC_RBBAR1	0x14
#define ENETC_RBPIR	0x18
#define ENETC_RBLENR	0x20
#define ENETC_RBIER	0xa0
#define ENETC_RBIER_RXTIE	BIT(0)
#define ENETC_RBIDR	0xa4
#define ENETC_RBICR0	0xa8
#define ENETC_RBICR0_ICEN		BIT(31)
#define ENETC_RBICR0_ICPT_MASK		0x1ff
#define ENETC_RBICR0_SET_ICPT(n)	((n) & ENETC_RBICR0_ICPT_MASK)
#define ENETC_RBICR1	0xac

/* TX BDR reg offsets */
#define ENETC_TBMR	0
#define ENETC_TBSR_BUSY	BIT(0)
#define ENETC_TBMR_VIH	BIT(9)
#define ENETC_TBMR_PRIO_MASK		GENMASK(2, 0)
#define ENETC_TBMR_SET_PRIO(val)	((val) & ENETC_TBMR_PRIO_MASK)
#define ENETC_TBMR_EN	BIT(31)
#define ENETC_TBSR	0x4
#define ENETC_TBBAR0	0x10
#define ENETC_TBBAR1	0x14
#define ENETC_TBPIR	0x18
#define ENETC_TBCIR	0x1c
#define ENETC_TBCIR_IDX_MASK	0xffff
#define ENETC_TBLENR	0x20
#define ENETC_TBIER	0xa0
#define ENETC_TBIER_TXTIE	BIT(0)
#define ENETC_TBIDR	0xa4
#define ENETC_TBICR0	0xa8
#define ENETC_TBICR0_ICEN		BIT(31)
#define ENETC_TBICR0_ICPT_MASK		0xf
#define ENETC_TBICR0_SET_ICPT(n) ((ilog2(n) + 1) & ENETC_TBICR0_ICPT_MASK)
#define ENETC_TBICR1	0xac

#define ENETC_RTBLENR_LEN(n)	((n) & ~0x7)

/* Port regs, offset: 1_0000h */
#define ENETC_PORT_BASE		0x10000
#define ENETC_PMR		0x0000
#define ENETC_PMR_EN	GENMASK(18, 16)
#define ENETC_PMR_PSPEED_MASK GENMASK(11, 8)
#define ENETC_PMR_PSPEED_10M	0
#define ENETC_PMR_PSPEED_100M	BIT(8)
#define ENETC_PMR_PSPEED_1000M	BIT(9)
#define ENETC_PMR_PSPEED_2500M	BIT(10)
#define ENETC_PSR		0x0004 /* RO */
#define ENETC_PSIPMR		0x0018
#define ENETC_PSIPMR_SET_UP(n)	BIT(n) /* n = SI index */
#define ENETC_PSIPMR_SET_MP(n)	BIT((n) + 16)
#define ENETC_PSIPVMR		0x001c
#define ENETC_VLAN_PROMISC_MAP_ALL	0x7
#define ENETC_PSIPVMR_SET_VP(simap)	((simap) & 0x7)
#define ENETC_PSIPVMR_SET_VUTA(simap)	(((simap) & 0x7) << 16)
#define ENETC_PSIPMAR0(n)	(0x0100 + (n) * 0x8) /* n = SI index */
#define ENETC_PSIPMAR1(n)	(0x0104 + (n) * 0x8)
#define ENETC_PVCLCTR		0x0208
#define ENETC_PCVLANR1		0x0210
#define ENETC_PCVLANR2		0x0214
#define ENETC_VLAN_TYPE_C	BIT(0)
#define ENETC_VLAN_TYPE_S	BIT(1)
#define ENETC_PVCLCTR_OVTPIDL(bmp)	((bmp) & 0xff) /* VLAN_TYPE */
#define ENETC_PSIVLANR(n)	(0x0240 + (n) * 4) /* n = SI index */
#define ENETC_PSIVLAN_EN	BIT(31)
#define ENETC_PSIVLAN_SET_QOS(val)	((u32)(val) << 12)
#define ENETC_PPAUONTR		0x0410
#define ENETC_PPAUOFFTR		0x0414
#define ENETC_PTXMBAR		0x0608
#define ENETC_PCAPR0		0x0900
#define ENETC_PCAPR0_RXBDR(val)	((val) >> 24)
#define ENETC_PCAPR0_TXBDR(val)	(((val) >> 16) & 0xff)
#define ENETC_PCAPR1		0x0904
#define ENETC_PSICFGR0(n)	(0x0940 + (n) * 0xc)  /* n = SI index */
#define ENETC_PSICFGR0_SET_TXBDR(val)	((val) & 0xff)
#define ENETC_PSICFGR0_SET_RXBDR(val)	(((val) & 0xff) << 16)
#define ENETC_PSICFGR0_VTE	BIT(12)
#define ENETC_PSICFGR0_SIVIE	BIT(14)
#define ENETC_PSICFGR0_ASE	BIT(15)
#define ENETC_PSICFGR0_SIVC(bmp)	(((bmp) & 0xff) << 24) /* VLAN_TYPE */

#define ENETC_PTCCBSR0(n)	(0x1110 + (n) * 8) /* n = 0 to 7*/
#define ENETC_CBSE		BIT(31)
#define ENETC_CBS_BW_MASK	GENMASK(6, 0)
#define ENETC_PTCCBSR1(n)	(0x1114 + (n) * 8) /* n = 0 to 7*/
#define ENETC_RSSHASH_KEY_SIZE	40
#define ENETC_PRSSCAPR		0x1404
#define ENETC_PRSSCAPR_GET_NUM_RSS(val)	(BIT((val) & 0xf) * 32)
#define ENETC_PRSSK(n)		(0x1410 + (n) * 4) /* n = [0..9] */
#define ENETC_PSIVLANFMR	0x1700
#define ENETC_PSIVLANFMR_VS	BIT(0)
#define ENETC_PRFSMR		0x1800
#define ENETC_PRFSMR_RFSE	BIT(31)
#define ENETC_PRFSCAPR		0x1804
#define ENETC_PRFSCAPR_GET_NUM_RFS(val)	((((val) & 0xf) + 1) * 16)
#define ENETC_PSIRFSCFGR(n)	(0x1814 + (n) * 4) /* n = SI index */
#define ENETC_PFPMR		0x1900
#define ENETC_PFPMR_PMACE	BIT(1)
#define ENETC_EMDIO_BASE	0x1c00
#define ENETC_PSIUMHFR0(n, err)	(((err) ? 0x1d08 : 0x1d00) + (n) * 0x10)
#define ENETC_PSIUMHFR1(n)	(0x1d04 + (n) * 0x10)
#define ENETC_PSIMMHFR0(n, err)	(((err) ? 0x1d00 : 0x1d08) + (n) * 0x10)
#define ENETC_PSIMMHFR1(n)	(0x1d0c + (n) * 0x10)
#define ENETC_PSIVHFR0(n)	(0x1e00 + (n) * 8) /* n = SI index */
#define ENETC_PSIVHFR1(n)	(0x1e04 + (n) * 8) /* n = SI index */
#define ENETC_MMCSR		0x1f00
#define ENETC_MMCSR_LINK_FAIL	BIT(31)
#define ENETC_MMCSR_VT_MASK	GENMASK(29, 23) /* Verify Time */
#define ENETC_MMCSR_VT(x)	(((x) << 23) & ENETC_MMCSR_VT_MASK)
#define ENETC_MMCSR_GET_VT(x)	(((x) & ENETC_MMCSR_VT_MASK) >> 23)
#define ENETC_MMCSR_TXSTS_MASK	GENMASK(22, 21) /* Merge Status */
#define ENETC_MMCSR_GET_TXSTS(x) (((x) & ENETC_MMCSR_TXSTS_MASK) >> 21)
#define ENETC_MMCSR_VSTS_MASK	GENMASK(20, 18) /* Verify Status */
#define ENETC_MMCSR_GET_VSTS(x) (((x) & ENETC_MMCSR_VSTS_MASK) >> 18)
#define ENETC_MMCSR_VDIS	BIT(17) /* Verify Disabled */
#define ENETC_MMCSR_ME		BIT(16) /* Merge Enabled */
#define ENETC_MMCSR_RAFS_MASK	GENMASK(9, 8) /* Remote Additional Fragment Size */
#define ENETC_MMCSR_RAFS(x)	(((x) << 8) & ENETC_MMCSR_RAFS_MASK)
#define ENETC_MMCSR_GET_RAFS(x)	(((x) & ENETC_MMCSR_RAFS_MASK) >> 8)
#define ENETC_MMCSR_LAFS_MASK	GENMASK(4, 3) /* Local Additional Fragment Size */
#define ENETC_MMCSR_GET_LAFS(x)	(((x) & ENETC_MMCSR_LAFS_MASK) >> 3)
#define ENETC_MMCSR_LPA		BIT(2) /* Local Preemption Active */
#define ENETC_MMCSR_LPE		BIT(1) /* Local Preemption Enabled */
#define ENETC_MMCSR_LPS		BIT(0) /* Local Preemption Supported */
#define ENETC_MMFAECR		0x1f08
#define ENETC_MMFSECR		0x1f0c
#define ENETC_MMFAOCR		0x1f10
#define ENETC_MMFCRXR		0x1f14
#define ENETC_MMFCTXR		0x1f18
#define ENETC_MMHCR		0x1f1c
#define ENETC_PTCMSDUR(n)	(0x2020 + (n) * 4) /* n = TC index [0..7] */

#define ENETC_PMAC_OFFSET	0x1000

#define ENETC_PM0_CMD_CFG	0x8008
#define ENETC_PM0_TX_EN		BIT(0)
#define ENETC_PM0_RX_EN		BIT(1)
#define ENETC_PM0_PROMISC	BIT(4)
#define ENETC_PM0_PAUSE_IGN	BIT(8)
#define ENETC_PM0_CMD_XGLP	BIT(10)
#define ENETC_PM0_CMD_TXP	BIT(11)
#define ENETC_PM0_CMD_PHY_TX_EN	BIT(15)
#define ENETC_PM0_CMD_SFD	BIT(21)
#define ENETC_PM0_MAXFRM	0x8014
#define ENETC_SET_TX_MTU(val)	((val) << 16)
#define ENETC_SET_MAXFRM(val)	((val) & 0xffff)
#define ENETC_PM0_RX_FIFO	0x801c
#define ENETC_PM0_RX_FIFO_VAL	1

#define ENETC_PM_IMDIO_BASE	0x8030

#define ENETC_PM0_PAUSE_QUANTA	0x8054
#define ENETC_PM0_PAUSE_THRESH	0x8064

#define ENETC_PM0_SINGLE_STEP		0x80c0
#define ENETC_PM0_SINGLE_STEP_CH	BIT(7)
#define ENETC_PM0_SINGLE_STEP_EN	BIT(31)
#define ENETC_SET_SINGLE_STEP_OFFSET(v)	(((v) & 0xff) << 8)

#define ENETC_PM0_IF_MODE	0x8300
#define ENETC_PM0_IFM_RG	BIT(2)
#define ENETC_PM0_IFM_RLP	(BIT(5) | BIT(11))
#define ENETC_PM0_IFM_EN_AUTO	BIT(15)
#define ENETC_PM0_IFM_SSP_MASK	GENMASK(14, 13)
#define ENETC_PM0_IFM_SSP_1000	(2 << 13)
#define ENETC_PM0_IFM_SSP_100	(0 << 13)
#define ENETC_PM0_IFM_SSP_10	(1 << 13)
#define ENETC_PM0_IFM_FULL_DPX	BIT(12)
#define ENETC_PM0_IFM_IFMODE_MASK GENMASK(1, 0)
#define ENETC_PM0_IFM_IFMODE_XGMII 0
#define ENETC_PM0_IFM_IFMODE_GMII 2
#define ENETC_PSIDCAPR		0x1b08
#define ENETC_PSIDCAPR_MSK	GENMASK(15, 0)
#define ENETC_PSFCAPR		0x1b18
#define ENETC_PSFCAPR_MSK	GENMASK(15, 0)
#define ENETC_PSGCAPR		0x1b28
#define ENETC_PSGCAPR_GCL_MSK	GENMASK(18, 16)
#define ENETC_PSGCAPR_SGIT_MSK	GENMASK(15, 0)
#define ENETC_PFMCAPR		0x1b38
#define ENETC_PFMCAPR_MSK	GENMASK(15, 0)

/* Port MAC counters: Port MAC 0 corresponds to the eMAC and
 * Port MAC 1 to the pMAC.
 */
#define ENETC_PM_REOCT(mac)	(0x8100 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_RALN(mac)	(0x8110 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_RXPF(mac)	(0x8118 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_RFRM(mac)	(0x8120 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_RFCS(mac)	(0x8128 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_RVLAN(mac)	(0x8130 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_RERR(mac)	(0x8138 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_RUCA(mac)	(0x8140 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_RMCA(mac)	(0x8148 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_RBCA(mac)	(0x8150 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_RDRP(mac)	(0x8158 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_RPKT(mac)	(0x8160 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_RUND(mac)	(0x8168 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_R64(mac)	(0x8170 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_R127(mac)	(0x8178 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_R255(mac)	(0x8180 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_R511(mac)	(0x8188 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_R1023(mac)	(0x8190 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_R1522(mac)	(0x8198 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_R1523X(mac)	(0x81A0 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_ROVR(mac)	(0x81A8 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_RJBR(mac)	(0x81B0 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_RFRG(mac)	(0x81B8 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_RCNP(mac)	(0x81C0 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_RDRNTP(mac)	(0x81C8 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_TEOCT(mac)	(0x8200 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_TOCT(mac)	(0x8208 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_TCRSE(mac)	(0x8210 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_TXPF(mac)	(0x8218 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_TFRM(mac)	(0x8220 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_TFCS(mac)	(0x8228 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_TVLAN(mac)	(0x8230 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_TERR(mac)	(0x8238 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_TUCA(mac)	(0x8240 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_TMCA(mac)	(0x8248 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_TBCA(mac)	(0x8250 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_TPKT(mac)	(0x8260 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_TUND(mac)	(0x8268 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_T64(mac)	(0x8270 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_T127(mac)	(0x8278 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_T255(mac)	(0x8280 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_T511(mac)	(0x8288 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_T1023(mac)	(0x8290 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_T1522(mac)	(0x8298 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_T1523X(mac)	(0x82A0 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_TCNP(mac)	(0x82C0 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_TDFR(mac)	(0x82D0 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_TMCOL(mac)	(0x82D8 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_TSCOL(mac)	(0x82E0 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_TLCOL(mac)	(0x82E8 + ENETC_PMAC_OFFSET * (mac))
#define ENETC_PM_TECOL(mac)	(0x82F0 + ENETC_PMAC_OFFSET * (mac))

/* Port counters */
#define ENETC_PICDR(n)		(0x0700 + (n) * 8) /* n = [0..3] */
#define ENETC_PBFDSIR		0x0810
#define ENETC_PFDMSAPR		0x0814
#define ENETC_UFDMF		0x1680
#define ENETC_MFDMF		0x1684
#define ENETC_PUFDVFR		0x1780
#define ENETC_PMFDVFR		0x1784
#define ENETC_PBFDVFR		0x1788

/** Global regs, offset: 2_0000h */
#define ENETC_GLOBAL_BASE	0x20000
#define ENETC_G_EIPBRR0		0x0bf8
#define ENETC_G_EIPBRR1		0x0bfc
#define ENETC_G_EPFBLPR(n)	(0xd00 + 4 * (n))
#define ENETC_G_EPFBLPR1_XGMII	0x80000000

/* PCI device info */
struct enetc_hw {
	/* SI registers, used by all PCI functions */
	void __iomem *reg;
	/* Port registers, PF only */
	void __iomem *port;
	/* IP global registers, PF only */
	void __iomem *global;
};

/* ENETC register accessors */

/* MDIO issue workaround (on LS1028A) -
 * Due to a hardware issue, an access to MDIO registers
 * that is concurrent with other ENETC register accesses
 * may lead to the MDIO access being dropped or corrupted.
 * To protect the MDIO accesses a readers-writers locking
 * scheme is used, where the MDIO register accesses are
 * protected by write locks to insure exclusivity, while
 * the remaining ENETC registers are accessed under read
 * locks since they only compete with MDIO accesses.
 */
extern rwlock_t enetc_mdio_lock;

/* use this locking primitive only on the fast datapath to
 * group together multiple non-MDIO register accesses to
 * minimize the overhead of the lock
 */
static inline void enetc_lock_mdio(void)
{
	read_lock(&enetc_mdio_lock);
}

static inline void enetc_unlock_mdio(void)
{
	read_unlock(&enetc_mdio_lock);
}

/* use these accessors only on the fast datapath under
 * the enetc_lock_mdio() locking primitive to minimize
 * the overhead of the lock
 */
static inline u32 enetc_rd_reg_hot(void __iomem *reg)
{
	lockdep_assert_held(&enetc_mdio_lock);

	return ioread32(reg);
}

static inline void enetc_wr_reg_hot(void __iomem *reg, u32 val)
{
	lockdep_assert_held(&enetc_mdio_lock);

	iowrite32(val, reg);
}

/* internal helpers for the MDIO w/a */
static inline u32 _enetc_rd_reg_wa(void __iomem *reg)
{
	u32 val;

	enetc_lock_mdio();
	val = ioread32(reg);
	enetc_unlock_mdio();

	return val;
}

static inline void _enetc_wr_reg_wa(void __iomem *reg, u32 val)
{
	enetc_lock_mdio();
	iowrite32(val, reg);
	enetc_unlock_mdio();
}

static inline u32 _enetc_rd_mdio_reg_wa(void __iomem *reg)
{
	unsigned long flags;
	u32 val;

	write_lock_irqsave(&enetc_mdio_lock, flags);
	val = ioread32(reg);
	write_unlock_irqrestore(&enetc_mdio_lock, flags);

	return val;
}

static inline void _enetc_wr_mdio_reg_wa(void __iomem *reg, u32 val)
{
	unsigned long flags;

	write_lock_irqsave(&enetc_mdio_lock, flags);
	iowrite32(val, reg);
	write_unlock_irqrestore(&enetc_mdio_lock, flags);
}

#ifdef ioread64
static inline u64 _enetc_rd_reg64(void __iomem *reg)
{
	return ioread64(reg);
}
#else
/* using this to read out stats on 32b systems */
static inline u64 _enetc_rd_reg64(void __iomem *reg)
{
	u32 low, high, tmp;

	do {
		high = ioread32(reg + 4);
		low = ioread32(reg);
		tmp = ioread32(reg + 4);
	} while (high != tmp);

	return le64_to_cpu((__le64)high << 32 | low);
}
#endif

static inline u64 _enetc_rd_reg64_wa(void __iomem *reg)
{
	u64 val;

	enetc_lock_mdio();
	val = _enetc_rd_reg64(reg);
	enetc_unlock_mdio();

	return val;
}

/* general register accessors */
#define enetc_rd_reg(reg)		_enetc_rd_reg_wa((reg))
#define enetc_wr_reg(reg, val)		_enetc_wr_reg_wa((reg), (val))
#define enetc_rd(hw, off)		enetc_rd_reg((hw)->reg + (off))
#define enetc_wr(hw, off, val)		enetc_wr_reg((hw)->reg + (off), val)
#define enetc_rd_hot(hw, off)		enetc_rd_reg_hot((hw)->reg + (off))
#define enetc_wr_hot(hw, off, val)	enetc_wr_reg_hot((hw)->reg + (off), val)
#define enetc_rd64(hw, off)		_enetc_rd_reg64_wa((hw)->reg + (off))
/* port register accessors - PF only */
#define enetc_port_rd(hw, off)		enetc_rd_reg((hw)->port + (off))
#define enetc_port_wr(hw, off, val)	enetc_wr_reg((hw)->port + (off), val)
#define enetc_port_rd_mdio(hw, off)	_enetc_rd_mdio_reg_wa((hw)->port + (off))
#define enetc_port_wr_mdio(hw, off, val)	_enetc_wr_mdio_reg_wa(\
							(hw)->port + (off), val)
/* global register accessors - PF only */
#define enetc_global_rd(hw, off)	enetc_rd_reg((hw)->global + (off))
#define enetc_global_wr(hw, off, val)	enetc_wr_reg((hw)->global + (off), val)
/* BDR register accessors, see ENETC_BDR() */
#define enetc_bdr_rd(hw, t, n, off) \
				enetc_rd(hw, ENETC_BDR(t, n, off))
#define enetc_bdr_wr(hw, t, n, off, val) \
				enetc_wr(hw, ENETC_BDR(t, n, off), val)
#define enetc_txbdr_rd(hw, n, off) enetc_bdr_rd(hw, TX, n, off)
#define enetc_rxbdr_rd(hw, n, off) enetc_bdr_rd(hw, RX, n, off)
#define enetc_txbdr_wr(hw, n, off, val) \
				enetc_bdr_wr(hw, TX, n, off, val)
#define enetc_rxbdr_wr(hw, n, off, val) \
				enetc_bdr_wr(hw, RX, n, off, val)

/* Buffer Descriptors (BD) */
union enetc_tx_bd {
	struct {
		__le64 addr;
		__le16 buf_len;
		__le16 frm_len;
		union {
			struct {
				u8 reserved[3];
				u8 flags;
			}; /* default layout */
			__le32 txstart;
			__le32 lstatus;
		};
	};
	struct {
		__le32 tstamp;
		__le16 tpid;
		__le16 vid;
		u8 reserved[6];
		u8 e_flags;
		u8 flags;
	} ext; /* Tx BD extension */
	struct {
		__le32 tstamp;
		u8 reserved[10];
		u8 status;
		u8 flags;
	} wb; /* writeback descriptor */
};

enum enetc_txbd_flags {
	ENETC_TXBD_FLAGS_RES0 = BIT(0), /* reserved */
	ENETC_TXBD_FLAGS_TSE = BIT(1),
	ENETC_TXBD_FLAGS_W = BIT(2),
	ENETC_TXBD_FLAGS_RES3 = BIT(3), /* reserved */
	ENETC_TXBD_FLAGS_TXSTART = BIT(4),
	ENETC_TXBD_FLAGS_EX = BIT(6),
	ENETC_TXBD_FLAGS_F = BIT(7)
};
#define ENETC_TXBD_STATS_WIN	BIT(7)
#define ENETC_TXBD_TXSTART_MASK GENMASK(24, 0)
#define ENETC_TXBD_FLAGS_OFFSET 24

static inline __le32 enetc_txbd_set_tx_start(u64 tx_start, u8 flags)
{
	u32 temp;

	temp = (tx_start >> 5 & ENETC_TXBD_TXSTART_MASK) |
	       (flags << ENETC_TXBD_FLAGS_OFFSET);

	return cpu_to_le32(temp);
}

static inline void enetc_clear_tx_bd(union enetc_tx_bd *txbd)
{
	memset(txbd, 0, sizeof(*txbd));
}

/* Extension flags */
#define ENETC_TXBD_E_FLAGS_VLAN_INS	BIT(0)
#define ENETC_TXBD_E_FLAGS_ONE_STEP_PTP	BIT(1)
#define ENETC_TXBD_E_FLAGS_TWO_STEP_PTP	BIT(2)

union enetc_rx_bd {
	struct {
		__le64 addr;
		u8 reserved[8];
	} w;
	struct {
		__le16 inet_csum;
		__le16 parse_summary;
		__le32 rss_hash;
		__le16 buf_len;
		__le16 vlan_opt;
		union {
			struct {
				__le16 flags;
				__le16 error;
			};
			__le32 lstatus;
		};
	} r;
	struct {
		__le32 tstamp;
		u8 reserved[12];
	} ext;
};

#define ENETC_RXBD_LSTATUS_R	BIT(30)
#define ENETC_RXBD_LSTATUS_F	BIT(31)
#define ENETC_RXBD_ERR_MASK	0xff
#define ENETC_RXBD_LSTATUS(flags)	((flags) << 16)
#define ENETC_RXBD_FLAG_VLAN	BIT(9)
#define ENETC_RXBD_FLAG_TSTMP	BIT(10)
#define ENETC_RXBD_FLAG_TPID	GENMASK(1, 0)

#define ENETC_MAC_ADDR_FILT_CNT	8 /* # of supported entries per port */
#define EMETC_MAC_ADDR_FILT_RES	3 /* # of reserved entries at the beginning */
#define ENETC_MAX_NUM_VFS	2

#define ENETC_CBD_FLAGS_SF	BIT(7) /* short format */
#define ENETC_CBD_STATUS_MASK	0xf

struct enetc_cmd_rfse {
	u8 smac_h[6];
	u8 smac_m[6];
	u8 dmac_h[6];
	u8 dmac_m[6];
	__be32 sip_h[4];
	__be32 sip_m[4];
	__be32 dip_h[4];
	__be32 dip_m[4];
	u16 ethtype_h;
	u16 ethtype_m;
	u16 ethtype4_h;
	u16 ethtype4_m;
	u16 sport_h;
	u16 sport_m;
	u16 dport_h;
	u16 dport_m;
	u16 vlan_h;
	u16 vlan_m;
	u8 proto_h;
	u8 proto_m;
	u16 flags;
	u16 result;
	u16 mode;
};

#define ENETC_RFSE_EN	BIT(15)
#define ENETC_RFSE_MODE_BD	2

static inline void enetc_load_primary_mac_addr(struct enetc_hw *hw,
					       struct net_device *ndev)
{
	u8 addr[ETH_ALEN] __aligned(4);

	*(u32 *)addr = __raw_readl(hw->reg + ENETC_SIPMAR0);
	*(u16 *)(addr + 4) = __raw_readw(hw->reg + ENETC_SIPMAR1);
	eth_hw_addr_set(ndev, addr);
}

#define ENETC_SI_INT_IDX	0
/* base index for Rx/Tx interrupts */
#define ENETC_BDR_INT_BASE_IDX	1

/* Messaging */

/* Command completion status */
enum enetc_msg_cmd_status {
	ENETC_MSG_CMD_STATUS_OK,
	ENETC_MSG_CMD_STATUS_FAIL
};

/* VSI-PSI command message types */
enum enetc_msg_cmd_type {
	ENETC_MSG_CMD_MNG_MAC = 1, /* manage MAC address */
	ENETC_MSG_CMD_MNG_RX_MAC_FILTER,/* manage RX MAC table */
	ENETC_MSG_CMD_MNG_RX_VLAN_FILTER /* manage RX VLAN table */
};

/* VSI-PSI command action types */
enum enetc_msg_cmd_action_type {
	ENETC_MSG_CMD_MNG_ADD = 1,
	ENETC_MSG_CMD_MNG_REMOVE
};

/* PSI-VSI command header format */
struct enetc_msg_cmd_header {
	u16 type;	/* command class type */
	u16 id;		/* denotes the specific required action */
};

/* Common H/W utility functions */

static inline void enetc_bdr_enable_rxvlan(struct enetc_hw *hw, int idx,
					   bool en)
{
	u32 val = enetc_rxbdr_rd(hw, idx, ENETC_RBMR);

	val = (val & ~ENETC_RBMR_VTE) | (en ? ENETC_RBMR_VTE : 0);
	enetc_rxbdr_wr(hw, idx, ENETC_RBMR, val);
}

static inline void enetc_bdr_enable_txvlan(struct enetc_hw *hw, int idx,
					   bool en)
{
	u32 val = enetc_txbdr_rd(hw, idx, ENETC_TBMR);

	val = (val & ~ENETC_TBMR_VIH) | (en ? ENETC_TBMR_VIH : 0);
	enetc_txbdr_wr(hw, idx, ENETC_TBMR, val);
}

static inline void enetc_set_bdr_prio(struct enetc_hw *hw, int bdr_idx,
				      int prio)
{
	u32 val = enetc_txbdr_rd(hw, bdr_idx, ENETC_TBMR);

	val &= ~ENETC_TBMR_PRIO_MASK;
	val |= ENETC_TBMR_SET_PRIO(prio);
	enetc_txbdr_wr(hw, bdr_idx, ENETC_TBMR, val);
}

enum bdcr_cmd_class {
	BDCR_CMD_UNSPEC = 0,
	BDCR_CMD_MAC_FILTER,
	BDCR_CMD_VLAN_FILTER,
	BDCR_CMD_RSS,
	BDCR_CMD_RFS,
	BDCR_CMD_PORT_GCL,
	BDCR_CMD_RECV_CLASSIFIER,
	BDCR_CMD_STREAM_IDENTIFY,
	BDCR_CMD_STREAM_FILTER,
	BDCR_CMD_STREAM_GCL,
	BDCR_CMD_FLOW_METER,
	__BDCR_CMD_MAX_LEN,
	BDCR_CMD_MAX_LEN = __BDCR_CMD_MAX_LEN - 1,
};

/* class 5, command 0 */
struct tgs_gcl_conf {
	u8	atc;	/* init gate value */
	u8	res[7];
	struct {
		u8	res1[4];
		__le16	acl_len;
		u8	res2[2];
	};
};

/* gate control list entry */
struct gce {
	__le32	period;
	u8	gate;
	u8	res[3];
};

/* tgs_gcl_conf address point to this data space */
struct tgs_gcl_data {
	__le32		btl;
	__le32		bth;
	__le32		ct;
	__le32		cte;
	struct gce	entry[];
};

/* class 7, command 0, Stream Identity Entry Configuration */
struct streamid_conf {
	__le32	stream_handle;	/* init gate value */
	__le32	iports;
		u8	id_type;
		u8	oui[3];
		u8	res[3];
		u8	en;
};

#define ENETC_CBDR_SID_VID_MASK 0xfff
#define ENETC_CBDR_SID_VIDM BIT(12)
#define ENETC_CBDR_SID_TG_MASK 0xc000
/* streamid_conf address point to this data space */
struct streamid_data {
	union {
		u8 dmac[6];
		u8 smac[6];
	};
	u16     vid_vidm_tg;
};

#define ENETC_CBDR_SFI_PRI_MASK 0x7
#define ENETC_CBDR_SFI_PRIM		BIT(3)
#define ENETC_CBDR_SFI_BLOV		BIT(4)
#define ENETC_CBDR_SFI_BLEN		BIT(5)
#define ENETC_CBDR_SFI_MSDUEN	BIT(6)
#define ENETC_CBDR_SFI_FMITEN	BIT(7)
#define ENETC_CBDR_SFI_ENABLE	BIT(7)
/* class 8, command 0, Stream Filter Instance, Short Format */
struct sfi_conf {
	__le32	stream_handle;
		u8	multi;
		u8	res[2];
		u8	sthm;
	/* Max Service Data Unit or Flow Meter Instance Table index.
	 * Depending on the value of FLT this represents either Max
	 * Service Data Unit (max frame size) allowed by the filter
	 * entry or is an index into the Flow Meter Instance table
	 * index identifying the policer which will be used to police
	 * it.
	 */
	__le16	fm_inst_table_index;
	__le16	msdu;
	__le16	sg_inst_table_index;
		u8	res1[2];
	__le32	input_ports;
		u8	res2[3];
		u8	en;
};

/* class 8, command 2 stream Filter Instance status query short format
 * command no need structure define
 * Stream Filter Instance Query Statistics Response data
 */
struct sfi_counter_data {
	u32 matchl;
	u32 matchh;
	u32 msdu_dropl;
	u32 msdu_droph;
	u32 stream_gate_dropl;
	u32 stream_gate_droph;
	u32 flow_meter_dropl;
	u32 flow_meter_droph;
};

#define ENETC_CBDR_SGI_OIPV_MASK 0x7
#define ENETC_CBDR_SGI_OIPV_EN	BIT(3)
#define ENETC_CBDR_SGI_CGTST	BIT(6)
#define ENETC_CBDR_SGI_OGTST	BIT(7)
#define ENETC_CBDR_SGI_CFG_CHG  BIT(1)
#define ENETC_CBDR_SGI_CFG_PND  BIT(2)
#define ENETC_CBDR_SGI_OEX		BIT(4)
#define ENETC_CBDR_SGI_OEXEN	BIT(5)
#define ENETC_CBDR_SGI_IRX		BIT(6)
#define ENETC_CBDR_SGI_IRXEN	BIT(7)
#define ENETC_CBDR_SGI_ACLLEN_MASK 0x3
#define ENETC_CBDR_SGI_OCLLEN_MASK 0xc
#define	ENETC_CBDR_SGI_EN		BIT(7)
/* class 9, command 0, Stream Gate Instance Table, Short Format
 * class 9, command 2, Stream Gate Instance Table entry query write back
 * Short Format
 */
struct sgi_table {
	u8	res[8];
	u8	oipv;
	u8	res0[2];
	u8	ocgtst;
	u8	res1[7];
	u8	gset;
	u8	oacl_len;
	u8	res2[2];
	u8	en;
};

#define ENETC_CBDR_SGI_AIPV_MASK 0x7
#define ENETC_CBDR_SGI_AIPV_EN	BIT(3)
#define ENETC_CBDR_SGI_AGTST	BIT(7)

/* class 9, command 1, Stream Gate Control List, Long Format */
struct sgcl_conf {
	u8	aipv;
	u8	res[2];
	u8	agtst;
	u8	res1[4];
	union {
		struct {
			u8 res2[4];
			u8 acl_len;
			u8 res3[3];
		};
		u8 cct[8]; /* Config change time */
	};
};

#define ENETC_CBDR_SGL_IOMEN	BIT(0)
#define ENETC_CBDR_SGL_IPVEN	BIT(3)
#define ENETC_CBDR_SGL_GTST		BIT(4)
#define ENETC_CBDR_SGL_IPV_MASK 0xe
/* Stream Gate Control List Entry */
struct sgce {
	u32	interval;
	u8	msdu[3];
	u8	multi;
};

/* stream control list class 9 , cmd 1 data buffer */
struct sgcl_data {
	u32		btl;
	u32		bth;
	u32		ct;
	u32		cte;
	struct sgce	sgcl[];
};

#define ENETC_CBDR_FMI_MR	BIT(0)
#define ENETC_CBDR_FMI_MREN	BIT(1)
#define ENETC_CBDR_FMI_DOY	BIT(2)
#define	ENETC_CBDR_FMI_CM	BIT(3)
#define ENETC_CBDR_FMI_CF	BIT(4)
#define ENETC_CBDR_FMI_NDOR	BIT(5)
#define ENETC_CBDR_FMI_OALEN	BIT(6)
#define ENETC_CBDR_FMI_IRFPP_MASK GENMASK(4, 0)

/* class 10: command 0/1, Flow Meter Instance Set, short Format */
struct fmi_conf {
	__le32	cir;
	__le32	cbs;
	__le32	eir;
	__le32	ebs;
		u8	conf;
		u8	res1;
		u8	ir_fpp;
		u8	res2[4];
		u8	en;
};

struct enetc_cbd {
	union{
		struct sfi_conf sfi_conf;
		struct sgi_table sgi_table;
		struct fmi_conf fmi_conf;
		struct {
			__le32	addr[2];
			union {
				__le32	opt[4];
				struct tgs_gcl_conf	gcl_conf;
				struct streamid_conf	sid_set;
				struct sgcl_conf	sgcl_conf;
			};
		};	/* Long format */
		__le32 data[6];
	};
	__le16 index;
	__le16 length;
	u8 cmd;
	u8 cls;
	u8 _res;
	u8 status_flags;
};

#define ENETC_CLK  400000000ULL
static inline u32 enetc_cycles_to_usecs(u32 cycles)
{
	return (u32)div_u64(cycles * 1000000ULL, ENETC_CLK);
}

static inline u32 enetc_usecs_to_cycles(u32 usecs)
{
	return (u32)div_u64(usecs * ENETC_CLK, 1000000ULL);
}

/* port time gating control register */
#define ENETC_PTGCR			0x11a00
#define ENETC_PTGCR_TGE			BIT(31)
#define ENETC_PTGCR_TGPE		BIT(30)

/* Port time gating capability register */
#define ENETC_PTGCAPR			0x11a08
#define ENETC_PTGCAPR_MAX_GCL_LEN_MASK	GENMASK(15, 0)

/* Port time specific departure */
#define ENETC_PTCTSDR(n)	(0x1210 + 4 * (n))
#define ENETC_TSDE		BIT(31)

/* PSFP setting */
#define ENETC_PPSFPMR 0x11b00
#define ENETC_PPSFPMR_PSFPEN BIT(0)
#define ENETC_PPSFPMR_VS BIT(1)
#define ENETC_PPSFPMR_PVC BIT(2)
#define ENETC_PPSFPMR_PVZC BIT(3)