diff options
Diffstat (limited to 'drivers/net/ethernet/freescale/gianfar.h')
| -rw-r--r-- | drivers/net/ethernet/freescale/gianfar.h | 127 |
1 files changed, 86 insertions, 41 deletions
diff --git a/drivers/net/ethernet/freescale/gianfar.h b/drivers/net/ethernet/freescale/gianfar.h index 04112b98ff5..84632c569f2 100644 --- a/drivers/net/ethernet/freescale/gianfar.h +++ b/drivers/net/ethernet/freescale/gianfar.h @@ -9,7 +9,7 @@ * Maintainer: Kumar Gala * Modifier: Sandeep Gopalpet <sandeep.kumar@freescale.com> * - * Copyright 2002-2009, 2011 Freescale Semiconductor, Inc. + * Copyright 2002-2009, 2011-2013 Freescale Semiconductor, Inc. * * 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 @@ -29,7 +29,6 @@ #include <linux/errno.h> #include <linux/slab.h> #include <linux/interrupt.h> -#include <linux/init.h> #include <linux/delay.h> #include <linux/netdevice.h> #include <linux/etherdevice.h> @@ -378,8 +377,11 @@ extern const char gfar_driver_version[]; IMASK_RXFEN0 | IMASK_BSY | IMASK_EBERR | IMASK_BABR | \ IMASK_XFUN | IMASK_RXC | IMASK_BABT | IMASK_DPE \ | IMASK_PERR) -#define IMASK_RTX_DISABLED ((~(IMASK_RXFEN0 | IMASK_TXFEN | IMASK_BSY)) \ - & IMASK_DEFAULT) +#define IMASK_RX_DEFAULT (IMASK_RXFEN0 | IMASK_BSY) +#define IMASK_TX_DEFAULT (IMASK_TXFEN | IMASK_TXBEN) + +#define IMASK_RX_DISABLED ((~(IMASK_RX_DEFAULT)) & IMASK_DEFAULT) +#define IMASK_TX_DISABLED ((~(IMASK_TX_DEFAULT)) & IMASK_DEFAULT) /* Fifo management */ #define FIFO_TX_THR_MASK 0x01ff @@ -410,7 +412,9 @@ extern const char gfar_driver_version[]; /* This default RIR value directly corresponds * to the 3-bit hash value generated */ -#define DEFAULT_RIR0 0x05397700 +#define DEFAULT_8RXQ_RIR0 0x05397700 +/* Map even hash values to Q0, and odd ones to Q1 */ +#define DEFAULT_2RXQ_RIR0 0x04104100 /* RQFCR register bits */ #define RQFCR_GPI 0x80000000 @@ -881,7 +885,6 @@ struct gfar { #define FSL_GIANFAR_DEV_HAS_CSUM 0x00000010 #define FSL_GIANFAR_DEV_HAS_VLAN 0x00000020 #define FSL_GIANFAR_DEV_HAS_EXTENDED_HASH 0x00000040 -#define FSL_GIANFAR_DEV_HAS_PADDING 0x00000080 #define FSL_GIANFAR_DEV_HAS_MAGIC_PACKET 0x00000100 #define FSL_GIANFAR_DEV_HAS_BD_STASHING 0x00000200 #define FSL_GIANFAR_DEV_HAS_BUF_STASHING 0x00000400 @@ -893,8 +896,8 @@ struct gfar { #define DEFAULT_MAPPING 0xFF #endif -#define ISRG_SHIFT_TX 0x10 -#define ISRG_SHIFT_RX 0x18 +#define ISRG_RR0 0x80000000 +#define ISRG_TR0 0x00800000 /* The same driver can operate in two modes */ /* SQ_SG_MODE: Single Queue Single Group Mode @@ -906,6 +909,22 @@ enum { MQ_MG_MODE }; +/* GFAR_SQ_POLLING: Single Queue NAPI polling mode + * The driver supports a single pair of RX/Tx queues + * per interrupt group (Rx/Tx int line). MQ_MG mode + * devices have 2 interrupt groups, so the device will + * have a total of 2 Tx and 2 Rx queues in this case. + * GFAR_MQ_POLLING: Multi Queue NAPI polling mode + * The driver supports all the 8 Rx and Tx HW queues + * each queue mapped by the Device Tree to one of + * the 2 interrupt groups. This mode implies significant + * processing overhead (CPU and controller level). + */ +enum gfar_poll_mode { + GFAR_SQ_POLLING = 0, + GFAR_MQ_POLLING +}; + /* * Per TX queue stats */ @@ -967,7 +986,6 @@ struct rx_q_stats { /** * struct gfar_priv_rx_q - per rx queue structure - * @rxlock: per queue rx spin lock * @rx_skbuff: skb pointers * @skb_currx: currently use skb pointer * @rx_bd_base: First rx buffer descriptor @@ -980,8 +998,7 @@ struct rx_q_stats { */ struct gfar_priv_rx_q { - spinlock_t rxlock __attribute__ ((aligned (SMP_CACHE_BYTES))); - struct sk_buff ** rx_skbuff; + struct sk_buff **rx_skbuff __aligned(SMP_CACHE_BYTES); dma_addr_t rx_bd_dma_base; struct rxbd8 *rx_bd_base; struct rxbd8 *cur_rx; @@ -1017,17 +1034,20 @@ struct gfar_irqinfo { */ struct gfar_priv_grp { - spinlock_t grplock __attribute__ ((aligned (SMP_CACHE_BYTES))); - struct napi_struct napi; - struct gfar_private *priv; + spinlock_t grplock __aligned(SMP_CACHE_BYTES); + struct napi_struct napi_rx; + struct napi_struct napi_tx; struct gfar __iomem *regs; - unsigned int rstat; - unsigned long num_rx_queues; - unsigned long rx_bit_map; - /* cacheline 3 */ + struct gfar_priv_tx_q *tx_queue; + struct gfar_priv_rx_q *rx_queue; unsigned int tstat; + unsigned int rstat; + + struct gfar_private *priv; unsigned long num_tx_queues; unsigned long tx_bit_map; + unsigned long num_rx_queues; + unsigned long rx_bit_map; struct gfar_irqinfo *irqinfo[GFAR_NUM_IRQS]; }; @@ -1042,6 +1062,11 @@ enum gfar_errata { GFAR_ERRATA_12 = 0x08, /* a.k.a errata eTSEC49 */ }; +enum gfar_dev_state { + GFAR_DOWN = 1, + GFAR_RESETTING +}; + /* Struct stolen almost completely (and shamelessly) from the FCC enet source * (Ok, that's not so true anymore, but there is a family resemblance) * The GFAR buffer descriptors track the ring buffers. The rx_bd_base @@ -1052,8 +1077,6 @@ enum gfar_errata { * the buffer descriptor determines the actual condition. */ struct gfar_private { - unsigned int num_rx_queues; - struct device *dev; struct net_device *ndev; enum gfar_errata errata; @@ -1061,6 +1084,7 @@ struct gfar_private { u16 uses_rxfcb; u16 padding; + u32 device_flags; /* HW time stamping enabled flag */ int hwts_rx_en; @@ -1070,10 +1094,12 @@ struct gfar_private { struct gfar_priv_rx_q *rx_queue[MAX_RX_QS]; struct gfar_priv_grp gfargrp[MAXGROUPS]; - u32 device_flags; + unsigned long state; - unsigned int mode; + unsigned short mode; + unsigned short poll_mode; unsigned int num_tx_queues; + unsigned int num_rx_queues; unsigned int num_grps; /* Network Statistics */ @@ -1114,6 +1140,9 @@ struct gfar_private { unsigned int total_tx_ring_size; unsigned int total_rx_ring_size; + u32 rqueue; + u32 tqueue; + /* RX per device parameters */ unsigned int rx_stash_size; unsigned int rx_stash_index; @@ -1128,11 +1157,6 @@ struct gfar_private { u32 __iomem *hash_regs[16]; int hash_width; - /* global parameters */ - unsigned int fifo_threshold; - unsigned int fifo_starve; - unsigned int fifo_starve_off; - /*Filer table*/ unsigned int ftp_rqfpr[MAX_FILER_IDX + 1]; unsigned int ftp_rqfcr[MAX_FILER_IDX + 1]; @@ -1177,21 +1201,42 @@ static inline void gfar_read_filer(struct gfar_private *priv, *fpr = gfar_read(®s->rqfpr); } -extern void lock_rx_qs(struct gfar_private *priv); -extern void lock_tx_qs(struct gfar_private *priv); -extern void unlock_rx_qs(struct gfar_private *priv); -extern void unlock_tx_qs(struct gfar_private *priv); -extern irqreturn_t gfar_receive(int irq, void *dev_id); -extern int startup_gfar(struct net_device *dev); -extern void stop_gfar(struct net_device *dev); -extern void gfar_halt(struct net_device *dev); -extern void gfar_phy_test(struct mii_bus *bus, struct phy_device *phydev, - int enable, u32 regnum, u32 read); -extern void gfar_configure_coalescing_all(struct gfar_private *priv); -void gfar_init_sysfs(struct net_device *dev); +static inline void gfar_write_isrg(struct gfar_private *priv) +{ + struct gfar __iomem *regs = priv->gfargrp[0].regs; + u32 __iomem *baddr = ®s->isrg0; + u32 isrg = 0; + int grp_idx, i; + + for (grp_idx = 0; grp_idx < priv->num_grps; grp_idx++) { + struct gfar_priv_grp *grp = &priv->gfargrp[grp_idx]; + + for_each_set_bit(i, &grp->rx_bit_map, priv->num_rx_queues) { + isrg |= (ISRG_RR0 >> i); + } + + for_each_set_bit(i, &grp->tx_bit_map, priv->num_tx_queues) { + isrg |= (ISRG_TR0 >> i); + } + + gfar_write(baddr, isrg); + + baddr++; + isrg = 0; + } +} + +irqreturn_t gfar_receive(int irq, void *dev_id); +int startup_gfar(struct net_device *dev); +void stop_gfar(struct net_device *dev); +void reset_gfar(struct net_device *dev); +void gfar_mac_reset(struct gfar_private *priv); +void gfar_halt(struct gfar_private *priv); +void gfar_start(struct gfar_private *priv); +void gfar_phy_test(struct mii_bus *bus, struct phy_device *phydev, int enable, + u32 regnum, u32 read); +void gfar_configure_coalescing_all(struct gfar_private *priv); int gfar_set_features(struct net_device *dev, netdev_features_t features); -extern void gfar_check_rx_parser_mode(struct gfar_private *priv); -extern void gfar_vlan_mode(struct net_device *dev, netdev_features_t features); extern const struct ethtool_ops gfar_ethtool_ops; |