path: root/drivers/net/bnx2x.h

/* bnx2x.h: Broadcom Everest network driver.
 *
 * Copyright (c) 2007-2009 Broadcom Corporation
 *
 * 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.
 *
 * Maintained by: Eilon Greenstein <eilong@broadcom.com>
 * Written by: Eliezer Tamir
 * Based on code from Michael Chan's bnx2 driver
 */

#ifndef BNX2X_H
#define BNX2X_H

/* compilation time flags */

/* define this to make the driver freeze on error to allow getting debug info
 * (you will need to reboot afterwards) */
/* #define BNX2X_STOP_ON_ERROR */

#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
#define BCM_VLAN			1
#endif


#define BNX2X_MULTI_QUEUE

#define BNX2X_NEW_NAPI



#include <linux/mdio.h>
#include "bnx2x_reg.h"
#include "bnx2x_fw_defs.h"
#include "bnx2x_hsi.h"
#include "bnx2x_link.h"

/* error/debug prints */

#define DRV_MODULE_NAME		"bnx2x"
#define PFX DRV_MODULE_NAME	": "

/* for messages that are currently off */
#define BNX2X_MSG_OFF			0
#define BNX2X_MSG_MCP			0x010000 /* was: NETIF_MSG_HW */
#define BNX2X_MSG_STATS			0x020000 /* was: NETIF_MSG_TIMER */
#define BNX2X_MSG_NVM			0x040000 /* was: NETIF_MSG_HW */
#define BNX2X_MSG_DMAE			0x080000 /* was: NETIF_MSG_HW */
#define BNX2X_MSG_SP			0x100000 /* was: NETIF_MSG_INTR */
#define BNX2X_MSG_FP			0x200000 /* was: NETIF_MSG_INTR */

#define DP_LEVEL			KERN_NOTICE	/* was: KERN_DEBUG */

/* regular debug print */
#define DP(__mask, __fmt, __args...) do { \
	if (bp->msglevel & (__mask)) \
		printk(DP_LEVEL "[%s:%d(%s)]" __fmt, __func__, __LINE__, \
			bp->dev ? (bp->dev->name) : "?", ##__args); \
	} while (0)

/* errors debug print */
#define BNX2X_DBG_ERR(__fmt, __args...) do { \
	if (bp->msglevel & NETIF_MSG_PROBE) \
		printk(KERN_ERR "[%s:%d(%s)]" __fmt, __func__, __LINE__, \
			bp->dev ? (bp->dev->name) : "?", ##__args); \
	} while (0)

/* for errors (never masked) */
#define BNX2X_ERR(__fmt, __args...) do { \
	printk(KERN_ERR "[%s:%d(%s)]" __fmt, __func__, __LINE__, \
		bp->dev ? (bp->dev->name) : "?", ##__args); \
	} while (0)

/* before we have a dev->name use dev_info() */
#define BNX2X_DEV_INFO(__fmt, __args...) do { \
	if (bp->msglevel & NETIF_MSG_PROBE) \
		dev_info(&bp->pdev->dev, __fmt, ##__args); \
	} while (0)


#ifdef BNX2X_STOP_ON_ERROR
#define bnx2x_panic() do { \
		bp->panic = 1; \
		BNX2X_ERR("driver assert\n"); \
		bnx2x_int_disable(bp); \
		bnx2x_panic_dump(bp); \
	} while (0)
#else
#define bnx2x_panic() do { \
		bp->panic = 1; \
		BNX2X_ERR("driver assert\n"); \
		bnx2x_panic_dump(bp); \
	} while (0)
#endif


#define U64_LO(x)			(u32)(((u64)(x)) & 0xffffffff)
#define U64_HI(x)			(u32)(((u64)(x)) >> 32)
#define HILO_U64(hi, lo)		((((u64)(hi)) << 32) + (lo))


#define REG_ADDR(bp, offset)		(bp->regview + offset)

#define REG_RD(bp, offset)		readl(REG_ADDR(bp, offset))
#define REG_RD8(bp, offset)		readb(REG_ADDR(bp, offset))

#define REG_WR(bp, offset, val)		writel((u32)val, REG_ADDR(bp, offset))
#define REG_WR8(bp, offset, val)	writeb((u8)val, REG_ADDR(bp, offset))
#define REG_WR16(bp, offset, val)	writew((u16)val, REG_ADDR(bp, offset))

#define REG_RD_IND(bp, offset)		bnx2x_reg_rd_ind(bp, offset)
#define REG_WR_IND(bp, offset, val)	bnx2x_reg_wr_ind(bp, offset, val)

#define REG_RD_DMAE(bp, offset, valp, len32) \
	do { \
		bnx2x_read_dmae(bp, offset, len32);\
		memcpy(valp, bnx2x_sp(bp, wb_data[0]), (len32) * 4); \
	} while (0)

#define REG_WR_DMAE(bp, offset, valp, len32) \
	do { \
		memcpy(bnx2x_sp(bp, wb_data[0]), valp, (len32) * 4); \
		bnx2x_write_dmae(bp, bnx2x_sp_mapping(bp, wb_data), \
				 offset, len32); \
	} while (0)

#define VIRT_WR_DMAE_LEN(bp, data, addr, len32) \
	do { \
		memcpy(GUNZIP_BUF(bp), data, (len32) * 4); \
		bnx2x_write_big_buf_wb(bp, addr, len32); \
	} while (0)

#define SHMEM_ADDR(bp, field)		(bp->common.shmem_base + \
					 offsetof(struct shmem_region, field))
#define SHMEM_RD(bp, field)		REG_RD(bp, SHMEM_ADDR(bp, field))
#define SHMEM_WR(bp, field, val)	REG_WR(bp, SHMEM_ADDR(bp, field), val)

#define SHMEM2_ADDR(bp, field)		(bp->common.shmem2_base + \
					 offsetof(struct shmem2_region, field))
#define SHMEM2_RD(bp, field)		REG_RD(bp, SHMEM2_ADDR(bp, field))
#define SHMEM2_WR(bp, field, val)	REG_WR(bp, SHMEM2_ADDR(bp, field), val)

#define EMAC_RD(bp, reg)		REG_RD(bp, emac_base + reg)
#define EMAC_WR(bp, reg, val)		REG_WR(bp, emac_base + reg, val)


/* fast path */

struct sw_rx_bd {
	struct sk_buff	*skb;
	DECLARE_PCI_UNMAP_ADDR(mapping)
};

struct sw_tx_bd {
	struct sk_buff	*skb;
	u16		first_bd;
	u8		flags;
/* Set on the first BD descriptor when there is a split BD */
#define BNX2X_TSO_SPLIT_BD		(1<<0)
};

struct sw_rx_page {
	struct page	*page;
	DECLARE_PCI_UNMAP_ADDR(mapping)
};

union db_prod {
	struct doorbell_set_prod data;
	u32		raw;
};


/* MC hsi */
#define BCM_PAGE_SHIFT			12
#define BCM_PAGE_SIZE			(1 << BCM_PAGE_SHIFT)
#define BCM_PAGE_MASK			(~(BCM_PAGE_SIZE - 1))
#define BCM_PAGE_ALIGN(addr)	(((addr) + BCM_PAGE_SIZE - 1) & BCM_PAGE_MASK)

#define PAGES_PER_SGE_SHIFT		0
#define PAGES_PER_SGE			(1 << PAGES_PER_SGE_SHIFT)
#define SGE_PAGE_SIZE			PAGE_SIZE
#define SGE_PAGE_SHIFT			PAGE_SHIFT
#define SGE_PAGE_ALIGN(addr)		PAGE_ALIGN((typeof(PAGE_SIZE))(addr))

/* SGE ring related macros */
#define NUM_RX_SGE_PAGES		2
#define RX_SGE_CNT		(BCM_PAGE_SIZE / sizeof(struct eth_rx_sge))
#define MAX_RX_SGE_CNT			(RX_SGE_CNT - 2)
/* RX_SGE_CNT is promised to be a power of 2 */
#define RX_SGE_MASK			(RX_SGE_CNT - 1)
#define NUM_RX_SGE			(RX_SGE_CNT * NUM_RX_SGE_PAGES)
#define MAX_RX_SGE			(NUM_RX_SGE - 1)
#define NEXT_SGE_IDX(x)		((((x) & RX_SGE_MASK) == \
				  (MAX_RX_SGE_CNT - 1)) ? (x) + 3 : (x) + 1)
#define RX_SGE(x)			((x) & MAX_RX_SGE)

/* SGE producer mask related macros */
/* Number of bits in one sge_mask array element */
#define RX_SGE_MASK_ELEM_SZ		64
#define RX_SGE_MASK_ELEM_SHIFT		6
#define RX_SGE_MASK_ELEM_MASK		((u64)RX_SGE_MASK_ELEM_SZ - 1)

/* Creates a bitmask of all ones in less significant bits.
   idx - index of the most significant bit in the created mask */
#define RX_SGE_ONES_MASK(idx) \
		(((u64)0x1 << (((idx) & RX_SGE_MASK_ELEM_MASK) + 1)) - 1)
#define RX_SGE_MASK_ELEM_ONE_MASK	((u64)(~0))

/* Number of u64 elements in SGE mask array */