cregit-Linux how code gets into the kernel

Release 4.7 drivers/net/ethernet/emulex/benet/be_hw.h

/*
 * Copyright (C) 2005 - 2015 Emulex
 * All rights reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version 2
 * as published by the Free Software Foundation.  The full GNU General
 * Public License is included in this distribution in the file called COPYING.
 *
 * Contact Information:
 * linux-drivers@emulex.com
 *
 * Emulex
 * 3333 Susan Street
 * Costa Mesa, CA 92626
 */

/********* Mailbox door bell *************/
/* Used for driver communication with the FW.
 * The software must write this register twice to post any command. First,
 * it writes the register with hi=1 and the upper bits of the physical address
 * for the MAILBOX structure. Software must poll the ready bit until this
 * is acknowledged. Then, sotware writes the register with hi=0 with the lower
 * bits in the address. It must poll the ready bit until the command is
 * complete. Upon completion, the MAILBOX will contain a valid completion
 * queue entry.
 */

#define MPU_MAILBOX_DB_OFFSET	0x160

#define MPU_MAILBOX_DB_RDY_MASK	0x1 	
/* bit 0 */

#define MPU_MAILBOX_DB_HI_MASK	0x2	
/* bit 1 */


#define MPU_EP_CONTROL 		0

/********** MPU semphore: used for SH & BE  *************/

#define SLIPORT_SEMAPHORE_OFFSET_BEx		0xac  
/* CSR BAR offset */

#define SLIPORT_SEMAPHORE_OFFSET_SH		0x94  
/* PCI-CFG offset */

#define POST_STAGE_MASK				0x0000FFFF

#define POST_ERR_MASK				0x1

#define POST_ERR_SHIFT				31

/* MPU semphore POST stage values */

#define POST_STAGE_AWAITING_HOST_RDY 	0x1 
/* FW awaiting goahead from host */

#define POST_STAGE_HOST_RDY 		0x2 
/* Host has given go-ahed to FW */

#define POST_STAGE_BE_RESET		0x3 
/* Host wants to reset chip */

#define POST_STAGE_ARMFW_RDY		0xc000	
/* FW is done with POST */


/* Lancer SLIPORT registers */

#define SLIPORT_STATUS_OFFSET		0x404

#define SLIPORT_CONTROL_OFFSET		0x408

#define SLIPORT_ERROR1_OFFSET		0x40C

#define SLIPORT_ERROR2_OFFSET		0x410

#define PHYSDEV_CONTROL_OFFSET		0x414


#define SLIPORT_STATUS_ERR_MASK		0x80000000

#define SLIPORT_STATUS_DIP_MASK		0x02000000

#define SLIPORT_STATUS_RN_MASK		0x01000000

#define SLIPORT_STATUS_RDY_MASK		0x00800000

#define SLI_PORT_CONTROL_IP_MASK	0x08000000

#define PHYSDEV_CONTROL_FW_RESET_MASK	0x00000002

#define PHYSDEV_CONTROL_DD_MASK		0x00000004

#define PHYSDEV_CONTROL_INP_MASK	0x40000000


#define SLIPORT_ERROR_NO_RESOURCE1	0x2

#define SLIPORT_ERROR_NO_RESOURCE2	0x9


#define SLIPORT_ERROR_FW_RESET1		0x2

#define SLIPORT_ERROR_FW_RESET2		0x0

/********* Memory BAR register ************/

#define PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET 	0xfc
/* Host Interrupt Enable, if set interrupts are enabled although "PCI Interrupt
 * Disable" may still globally block interrupts in addition to individual
 * interrupt masks; a mechanism for the device driver to block all interrupts
 * atomically without having to arbitrate for the PCI Interrupt Disable bit
 * with the OS.
 */

#define MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK	BIT(29) 
/* bit 29 */

/********* PCI Function Capability *********/

#define BE_FUNCTION_CAPS_RSS			0x2

#define BE_FUNCTION_CAPS_SUPER_NIC		0x40

/********* Power management (WOL) **********/

#define PCICFG_PM_CONTROL_OFFSET		0x44

#define PCICFG_PM_CONTROL_MASK			0x108	
/* bits 3 & 8 */

/********* Online Control Registers *******/

#define PCICFG_ONLINE0				0xB0

#define PCICFG_ONLINE1				0xB4

/********* UE Status and Mask Registers ***/

#define PCICFG_UE_STATUS_LOW			0xA0

#define PCICFG_UE_STATUS_HIGH			0xA4

#define PCICFG_UE_STATUS_LOW_MASK		0xA8

#define PCICFG_UE_STATUS_HI_MASK		0xAC

/******** SLI_INTF ***********************/

#define SLI_INTF_REG_OFFSET			0x58

#define SLI_INTF_VALID_MASK			0xE0000000

#define SLI_INTF_VALID				0xC0000000

#define SLI_INTF_HINT2_MASK			0x1F000000

#define SLI_INTF_HINT2_SHIFT			24

#define SLI_INTF_HINT1_MASK			0x00FF0000

#define SLI_INTF_HINT1_SHIFT			16

#define SLI_INTF_FAMILY_MASK			0x00000F00

#define SLI_INTF_FAMILY_SHIFT			8

#define SLI_INTF_IF_TYPE_MASK			0x0000F000

#define SLI_INTF_IF_TYPE_SHIFT			12

#define SLI_INTF_REV_MASK			0x000000F0

#define SLI_INTF_REV_SHIFT			4

#define SLI_INTF_FT_MASK			0x00000001


#define SLI_INTF_TYPE_2		2

#define SLI_INTF_TYPE_3		3

/********* ISR0 Register offset **********/

#define CEV_ISR0_OFFSET 			0xC18

#define CEV_ISR_SIZE				4

/********* Event Q door bell *************/

#define DB_EQ_OFFSET			DB_CQ_OFFSET

#define DB_EQ_RING_ID_MASK		0x1FF	
/* bits 0 - 8 */

#define DB_EQ_RING_ID_EXT_MASK		0x3e00  
/* bits 9-13 */

#define DB_EQ_RING_ID_EXT_MASK_SHIFT	(2) 
/* qid bits 9-13 placing at 11-15 */

/* Clear the interrupt for this eq */

#define DB_EQ_CLR_SHIFT			(9)	
/* bit 9 */
/* Must be 1 */

#define DB_EQ_EVNT_SHIFT		(10)	
/* bit 10 */
/* Number of event entries processed */

#define DB_EQ_NUM_POPPED_SHIFT		(16)	
/* bits 16 - 28 */
/* Rearm bit */

#define DB_EQ_REARM_SHIFT		(29)	
/* bit 29 */
/* Rearm to interrupt delay encoding */

#define DB_EQ_R2I_DLY_SHIFT		(30)    
/* bits 30 - 31 */

/* Rearm to interrupt (R2I) delay multiplier encoding represents 3 different
 * values configured in CEV_REARM2IRPT_DLY_MULT_CSR register. This value is
 * programmed by host driver while ringing an EQ doorbell(EQ_DB) if a delay
 * between rearming the EQ and next interrupt on this EQ is desired.
 */

#define	R2I_DLY_ENC_0			0	
/* No delay */

#define	R2I_DLY_ENC_1			1	
/* maps to 160us EQ delay */

#define	R2I_DLY_ENC_2			2	
/* maps to 96us EQ delay */

#define	R2I_DLY_ENC_3			3	
/* maps to 48us EQ delay */

/********* Compl Q door bell *************/

#define DB_CQ_OFFSET 			0x120

#define DB_CQ_RING_ID_MASK		0x3FF	
/* bits 0 - 9 */

#define DB_CQ_RING_ID_EXT_MASK		0x7C00	
/* bits 10-14 */

#define DB_CQ_RING_ID_EXT_MASK_SHIFT	(1)	
/* qid bits 10-14
                                                 placing at 11-15 */

/* Number of event entries processed */

#define DB_CQ_NUM_POPPED_SHIFT		(16) 	
/* bits 16 - 28 */
/* Rearm bit */

#define DB_CQ_REARM_SHIFT		(29) 	
/* bit 29 */

/********** TX ULP door bell *************/

#define DB_TXULP1_OFFSET		0x60

#define DB_TXULP_RING_ID_MASK		0x7FF	
/* bits 0 - 10 */
/* Number of tx entries posted */

#define DB_TXULP_NUM_POSTED_SHIFT	(16)	
/* bits 16 - 29 */

#define DB_TXULP_NUM_POSTED_MASK	0x3FFF	
/* bits 16 - 29 */

/********** RQ(erx) door bell ************/

#define DB_RQ_OFFSET 			0x100

#define DB_RQ_RING_ID_MASK		0x3FF	
/* bits 0 - 9 */
/* Number of rx frags posted */

#define DB_RQ_NUM_POSTED_SHIFT		(24)	
/* bits 24 - 31 */

/********** MCC door bell ************/

#define DB_MCCQ_OFFSET 			0x140

#define DB_MCCQ_RING_ID_MASK		0x7FF	
/* bits 0 - 10 */
/* Number of entries posted */

#define DB_MCCQ_NUM_POSTED_SHIFT	(16)	
/* bits 16 - 29 */

/********** SRIOV VF PCICFG OFFSET ********/

#define SRIOV_VF_PCICFG_OFFSET		(4096)

/********** FAT TABLE  ********/

#define RETRIEVE_FAT	0

#define QUERY_FAT	1

/************* Rx Packet Type Encoding **************/

#define BE_UNICAST_PACKET		0

#define BE_MULTICAST_PACKET		1

#define BE_BROADCAST_PACKET		2

#define BE_RSVD_PACKET			3

/*
 * BE descriptors: host memory data structures whose formats
 * are hardwired in BE silicon.
 */
/* Event Queue Descriptor */

#define EQ_ENTRY_VALID_MASK 		0x1	
/* bit 0 */

#define EQ_ENTRY_RES_ID_MASK 		0xFFFF	
/* bits 16 - 31 */

#define EQ_ENTRY_RES_ID_SHIFT 		16


struct be_eq_entry {
	
u32 evt;
};

/* TX Queue Descriptor */

#define ETH_WRB_FRAG_LEN_MASK		0xFFFF

struct be_eth_wrb {
	
__le32 frag_pa_hi;		/* dword 0 */
	
__le32 frag_pa_lo;		/* dword 1 */
	
u32 rsvd0;			/* dword 2 */
	
__le32 frag_len;		/* dword 3: bits 0 - 15 */
} 
__packed;

/* Pseudo amap definition for eth_hdr_wrb in which each bit of the
 * actual structure is defined as a byte : used to calculate
 * offset/shift/mask of each field */

struct amap_eth_hdr_wrb {
	
u8 rsvd0[32];		/* dword 0 */
	
u8 rsvd1[32];		/* dword 1 */
	
u8 complete;		/* dword 2 */
	
u8 event;
	
u8 crc;
	
u8 forward;
	
u8 lso6;
	
u8 mgmt;
	
u8 ipcs;
	
u8 udpcs;
	
u8 tcpcs;
	
u8 lso;
	
u8 vlan;
	
u8 gso[2];
	
u8 num_wrb[5];
	
u8 lso_mss[14];
	
u8 len[16];		/* dword 3 */
	
u8 vlan_tag[16];
} 
__packed;


#define TX_HDR_WRB_COMPL		1		
/* word 2 */

#define TX_HDR_WRB_EVT			BIT(1)		
/* word 2 */

#define TX_HDR_WRB_NUM_SHIFT		13		
/* word 2: bits 13:17 */

#define TX_HDR_WRB_NUM_MASK		0x1F		
/* word 2: bits 13:17 */


struct be_eth_hdr_wrb {
	
__le32 dw[4];
};

/********* Tx Compl Status Encoding *********/

#define BE_TX_COMP_HDR_PARSE_ERR	0x2

#define BE_TX_COMP_NDMA_ERR		0x3

#define BE_TX_COMP_ACL_ERR		0x5


#define LANCER_TX_COMP_LSO_ERR			0x1

#define LANCER_TX_COMP_HSW_DROP_MAC_ERR		0x3

#define LANCER_TX_COMP_HSW_DROP_VLAN_ERR	0x5

#define LANCER_TX_COMP_QINQ_ERR			0x7

#define LANCER_TX_COMP_PARITY_ERR		0xb

#define LANCER_TX_COMP_DMA_ERR			0xd

/* TX Compl Queue Descriptor */

/* Pseudo amap definition for eth_tx_compl in which each bit of the
 * actual structure is defined as a byte: used to calculate
 * offset/shift/mask of each field */

struct amap_eth_tx_compl {
	
u8 wrb_index[16];	/* dword 0 */
	
u8 ct[2]; 		/* dword 0 */
	
u8 port[2];		/* dword 0 */
	
u8 rsvd0[8];		/* dword 0 */
	
u8 status[4];		/* dword 0 */
	
u8 user_bytes[16];	/* dword 1 */
	
u8 nwh_bytes[8];	/* dword 1 */
	
u8 lso;			/* dword 1 */
	
u8 cast_enc[2];		/* dword 1 */
	
u8 rsvd1[5];		/* dword 1 */
	
u8 rsvd2[32];		/* dword 2 */
	
u8 pkts[16];		/* dword 3 */
	
u8 ringid[11];		/* dword 3 */
	
u8 hash_val[4];		/* dword 3 */
	
u8 valid;		/* dword 3 */
} 
__packed;


struct be_eth_tx_compl {
	
u32 dw[4];
};

/* RX Queue Descriptor */

struct be_eth_rx_d {
	
u32 fragpa_hi;
	
u32 fragpa_lo;
};

/* RX Compl Queue Descriptor */

/* Pseudo amap definition for BE2 and BE3 legacy mode eth_rx_compl in which
 * each bit of the actual structure is defined as a byte: used to calculate
 * offset/shift/mask of each field */

struct amap_eth_rx_compl_v0 {
	
u8 vlan_tag[16];	/* dword 0 */
	
u8 pktsize[14];		/* dword 0 */
	
u8 port;		/* dword 0 */
	
u8 ip_opt;		/* dword 0 */
	
u8 err;			/* dword 1 */
	
u8 rsshp;		/* dword 1 */
	
u8 ipf;			/* dword 1 */
	
u8 tcpf;		/* dword 1 */
	
u8 udpf;		/* dword 1 */
	
u8 ipcksm;		/* dword 1 */
	
u8 l4_cksm;		/* dword 1 */
	
u8 ip_version;		/* dword 1 */
	
u8 macdst[6];		/* dword 1 */
	
u8 vtp;			/* dword 1 */
	
u8 ip_frag;		/* dword 1 */
	
u8 fragndx[10];		/* dword 1 */
	
u8 ct[2];		/* dword 1 */
	
u8 sw;			/* dword 1 */
	
u8 numfrags[3];		/* dword 1 */
	
u8 rss_flush;		/* dword 2 */
	
u8 cast_enc[2];		/* dword 2 */
	
u8 qnq;			/* dword 2 */
	
u8 rss_bank;		/* dword 2 */
	
u8 rsvd1[23];		/* dword 2 */
	
u8 lro_pkt;		/* dword 2 */
	
u8 rsvd2[2];		/* dword 2 */
	
u8 valid;		/* dword 2 */
	
u8 rsshash[32];		/* dword 3 */
} 
__packed;

/* Pseudo amap definition for BE3 native mode eth_rx_compl in which
 * each bit of the actual structure is defined as a byte: used to calculate
 * offset/shift/mask of each field */

struct amap_eth_rx_compl_v1 {
	
u8 vlan_tag[16];	/* dword 0 */
	
u8 pktsize[14];		/* dword 0 */
	
u8 vtp;			/* dword 0 */
	
u8 ip_opt;		/* dword 0 */
	
u8 err;			/* dword 1 */
	
u8 rsshp;		/* dword 1 */
	
u8 ipf;			/* dword 1 */
	
u8 tcpf;		/* dword 1 */
	
u8 udpf;		/* dword 1 */
	
u8 ipcksm;		/* dword 1 */
	
u8 l4_cksm;		/* dword 1 */
	
u8 ip_version;		/* dword 1 */
	
u8 macdst[7];		/* dword 1 */
	
u8 rsvd0;		/* dword 1 */
	
u8 fragndx[10];		/* dword 1 */
	
u8 ct[2];		/* dword 1 */
	
u8 sw;			/* dword 1 */
	
u8 numfrags[3];		/* dword 1 */
	
u8 rss_flush;		/* dword 2 */
	
u8 cast_enc[2];		/* dword 2 */
	
u8 qnq;			/* dword 2 */
	
u8 rss_bank;		/* dword 2 */
	
u8 port[2];		/* dword 2 */
	
u8 vntagp;		/* dword 2 */
	
u8 header_len[8];	/* dword 2 */
	
u8 header_split[2];	/* dword 2 */
	
u8 rsvd1[12];		/* dword 2 */
	
u8 tunneled;
	
u8 valid;		/* dword 2 */
	
u8 rsshash[32];		/* dword 3 */
} 
__packed;


struct be_eth_rx_compl {
	
u32 dw[4];
};

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