242 lines
7.5 KiB
C
242 lines
7.5 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef FS_ENET_H
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#define FS_ENET_H
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#include <linux/mii.h>
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#include <linux/netdevice.h>
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#include <linux/types.h>
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#include <linux/list.h>
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#include <linux/phy.h>
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#include <linux/dma-mapping.h>
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#include <linux/fs_enet_pd.h>
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#include <asm/fs_pd.h>
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#ifdef CONFIG_CPM1
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#include <asm/cpm1.h>
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#endif
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#if defined(CONFIG_FS_ENET_HAS_FEC)
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#include <asm/cpm.h>
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#if defined(CONFIG_FS_ENET_MPC5121_FEC)
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/* MPC5121 FEC has different register layout */
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struct fec {
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u32 fec_reserved0;
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u32 fec_ievent; /* Interrupt event reg */
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u32 fec_imask; /* Interrupt mask reg */
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u32 fec_reserved1;
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u32 fec_r_des_active; /* Receive descriptor reg */
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u32 fec_x_des_active; /* Transmit descriptor reg */
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u32 fec_reserved2[3];
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u32 fec_ecntrl; /* Ethernet control reg */
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u32 fec_reserved3[6];
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u32 fec_mii_data; /* MII manage frame reg */
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u32 fec_mii_speed; /* MII speed control reg */
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u32 fec_reserved4[7];
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u32 fec_mib_ctrlstat; /* MIB control/status reg */
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u32 fec_reserved5[7];
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u32 fec_r_cntrl; /* Receive control reg */
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u32 fec_reserved6[15];
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u32 fec_x_cntrl; /* Transmit Control reg */
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u32 fec_reserved7[7];
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u32 fec_addr_low; /* Low 32bits MAC address */
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u32 fec_addr_high; /* High 16bits MAC address */
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u32 fec_opd; /* Opcode + Pause duration */
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u32 fec_reserved8[10];
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u32 fec_hash_table_high; /* High 32bits hash table */
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u32 fec_hash_table_low; /* Low 32bits hash table */
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u32 fec_grp_hash_table_high; /* High 32bits hash table */
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u32 fec_grp_hash_table_low; /* Low 32bits hash table */
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u32 fec_reserved9[7];
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u32 fec_x_wmrk; /* FIFO transmit water mark */
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u32 fec_reserved10;
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u32 fec_r_bound; /* FIFO receive bound reg */
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u32 fec_r_fstart; /* FIFO receive start reg */
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u32 fec_reserved11[11];
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u32 fec_r_des_start; /* Receive descriptor ring */
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u32 fec_x_des_start; /* Transmit descriptor ring */
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u32 fec_r_buff_size; /* Maximum receive buff size */
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u32 fec_reserved12[26];
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u32 fec_dma_control; /* DMA Endian and other ctrl */
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};
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#endif
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struct fec_info {
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struct fec __iomem *fecp;
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u32 mii_speed;
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};
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#endif
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#ifdef CONFIG_CPM2
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#include <asm/cpm2.h>
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#endif
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/* hw driver ops */
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struct fs_ops {
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int (*setup_data)(struct net_device *dev);
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int (*allocate_bd)(struct net_device *dev);
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void (*free_bd)(struct net_device *dev);
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void (*cleanup_data)(struct net_device *dev);
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void (*set_multicast_list)(struct net_device *dev);
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void (*adjust_link)(struct net_device *dev);
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void (*restart)(struct net_device *dev);
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void (*stop)(struct net_device *dev);
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void (*napi_clear_event)(struct net_device *dev);
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void (*napi_enable)(struct net_device *dev);
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void (*napi_disable)(struct net_device *dev);
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void (*rx_bd_done)(struct net_device *dev);
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void (*tx_kickstart)(struct net_device *dev);
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u32 (*get_int_events)(struct net_device *dev);
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void (*clear_int_events)(struct net_device *dev, u32 int_events);
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void (*ev_error)(struct net_device *dev, u32 int_events);
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int (*get_regs)(struct net_device *dev, void *p, int *sizep);
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int (*get_regs_len)(struct net_device *dev);
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void (*tx_restart)(struct net_device *dev);
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};
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struct phy_info {
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unsigned int id;
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const char *name;
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void (*startup) (struct net_device * dev);
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void (*shutdown) (struct net_device * dev);
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void (*ack_int) (struct net_device * dev);
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};
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/* The FEC stores dest/src/type, data, and checksum for receive packets.
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*/
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#define MAX_MTU 1508 /* Allow fullsized pppoe packets over VLAN */
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#define MIN_MTU 46 /* this is data size */
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#define CRC_LEN 4
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#define PKT_MAXBUF_SIZE (MAX_MTU+ETH_HLEN+CRC_LEN)
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#define PKT_MINBUF_SIZE (MIN_MTU+ETH_HLEN+CRC_LEN)
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/* Must be a multiple of 32 (to cover both FEC & FCC) */
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#define PKT_MAXBLR_SIZE ((PKT_MAXBUF_SIZE + 31) & ~31)
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/* This is needed so that invalidate_xxx wont invalidate too much */
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#define ENET_RX_ALIGN 16
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#define ENET_RX_FRSIZE L1_CACHE_ALIGN(PKT_MAXBUF_SIZE + ENET_RX_ALIGN - 1)
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struct fs_enet_private {
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struct napi_struct napi;
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struct device *dev; /* pointer back to the device (must be initialized first) */
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struct net_device *ndev;
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spinlock_t lock; /* during all ops except TX pckt processing */
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spinlock_t tx_lock; /* during fs_start_xmit and fs_tx */
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struct fs_platform_info *fpi;
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struct work_struct timeout_work;
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const struct fs_ops *ops;
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int rx_ring, tx_ring;
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dma_addr_t ring_mem_addr;
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void __iomem *ring_base;
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struct sk_buff **rx_skbuff;
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struct sk_buff **tx_skbuff;
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char *mapped_as_page;
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cbd_t __iomem *rx_bd_base; /* Address of Rx and Tx buffers. */
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cbd_t __iomem *tx_bd_base;
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cbd_t __iomem *dirty_tx; /* ring entries to be free()ed. */
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cbd_t __iomem *cur_rx;
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cbd_t __iomem *cur_tx;
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int tx_free;
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const struct phy_info *phy;
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u32 msg_enable;
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struct mii_if_info mii_if;
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unsigned int last_mii_status;
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int interrupt;
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int oldduplex, oldspeed, oldlink; /* current settings */
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/* event masks */
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u32 ev_napi; /* mask of NAPI events */
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u32 ev; /* event mask */
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u32 ev_err; /* error event mask */
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u16 bd_rx_empty; /* mask of BD rx empty */
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u16 bd_rx_err; /* mask of BD rx errors */
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union {
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struct {
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int idx; /* FEC1 = 0, FEC2 = 1 */
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void __iomem *fecp; /* hw registers */
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u32 hthi, htlo; /* state for multicast */
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} fec;
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struct {
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int idx; /* FCC1-3 = 0-2 */
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void __iomem *fccp; /* hw registers */
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void __iomem *ep; /* parameter ram */
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void __iomem *fcccp; /* hw registers cont. */
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void __iomem *mem; /* FCC DPRAM */
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u32 gaddrh, gaddrl; /* group address */
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} fcc;
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struct {
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int idx; /* FEC1 = 0, FEC2 = 1 */
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void __iomem *sccp; /* hw registers */
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void __iomem *ep; /* parameter ram */
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u32 hthi, htlo; /* state for multicast */
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} scc;
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};
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};
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/***************************************************************************/
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void fs_init_bds(struct net_device *dev);
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void fs_cleanup_bds(struct net_device *dev);
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/***************************************************************************/
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#define DRV_MODULE_NAME "fs_enet"
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#define PFX DRV_MODULE_NAME ": "
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/***************************************************************************/
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int fs_enet_platform_init(void);
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void fs_enet_platform_cleanup(void);
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/***************************************************************************/
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/* buffer descriptor access macros */
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/* access macros */
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#if defined(CONFIG_CPM1)
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/* for a CPM1 __raw_xxx's are sufficient */
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#define __cbd_out32(addr, x) __raw_writel(x, addr)
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#define __cbd_out16(addr, x) __raw_writew(x, addr)
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#define __cbd_in32(addr) __raw_readl(addr)
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#define __cbd_in16(addr) __raw_readw(addr)
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#else
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/* for others play it safe */
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#define __cbd_out32(addr, x) out_be32(addr, x)
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#define __cbd_out16(addr, x) out_be16(addr, x)
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#define __cbd_in32(addr) in_be32(addr)
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#define __cbd_in16(addr) in_be16(addr)
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#endif
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/* write */
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#define CBDW_SC(_cbd, _sc) __cbd_out16(&(_cbd)->cbd_sc, (_sc))
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#define CBDW_DATLEN(_cbd, _datlen) __cbd_out16(&(_cbd)->cbd_datlen, (_datlen))
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#define CBDW_BUFADDR(_cbd, _bufaddr) __cbd_out32(&(_cbd)->cbd_bufaddr, (_bufaddr))
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/* read */
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#define CBDR_SC(_cbd) __cbd_in16(&(_cbd)->cbd_sc)
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#define CBDR_DATLEN(_cbd) __cbd_in16(&(_cbd)->cbd_datlen)
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#define CBDR_BUFADDR(_cbd) __cbd_in32(&(_cbd)->cbd_bufaddr)
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/* set bits */
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#define CBDS_SC(_cbd, _sc) CBDW_SC(_cbd, CBDR_SC(_cbd) | (_sc))
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/* clear bits */
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#define CBDC_SC(_cbd, _sc) CBDW_SC(_cbd, CBDR_SC(_cbd) & ~(_sc))
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/*******************************************************************/
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extern const struct fs_ops fs_fec_ops;
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extern const struct fs_ops fs_fcc_ops;
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extern const struct fs_ops fs_scc_ops;
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/*******************************************************************/
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#endif
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