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Diffstat (limited to 'drivers/net/armada100_fec.h')
| -rw-r--r-- | drivers/net/armada100_fec.h | 232 |
1 files changed, 232 insertions, 0 deletions
diff --git a/drivers/net/armada100_fec.h b/drivers/net/armada100_fec.h new file mode 100644 index 0000000..e2df4fc --- /dev/null +++ b/drivers/net/armada100_fec.h @@ -0,0 +1,232 @@ +/* + * (C) Copyright 2011 + * eInfochips Ltd. <www.einfochips.com> + * Written-by: Ajay Bhargav <ajay.bhargav@einfochips.com> + * + * (C) Copyright 2010 + * Marvell Semiconductor <www.marvell.com> + * Contributor: Mahavir Jain <mjain@marvell.com> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * 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; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, + * MA 02110-1301 USA + */ + +#ifndef __ARMADA100_FEC_H__ +#define __ARMADA100_FEC_H__ + +#ifndef TRUE +#define TRUE 1 +#endif +#ifndef FALSE +#define FALSE 0 +#endif + +#define PORT_NUM 0x0 + +/* RX & TX descriptor command */ +#define BUF_OWNED_BY_DMA (1<<31) + +/* RX descriptor status */ +#define RX_EN_INT (1<<23) +#define RX_FIRST_DESC (1<<17) +#define RX_LAST_DESC (1<<16) +#define RX_ERROR (1<<15) + +/* TX descriptor command */ +#define TX_EN_INT (1<<23) +#define TX_GEN_CRC (1<<22) +#define TX_ZERO_PADDING (1<<18) +#define TX_FIRST_DESC (1<<17) +#define TX_LAST_DESC (1<<16) +#define TX_ERROR (1<<15) + +/* smi register */ +#define SMI_BUSY (1<<28) /* 0 - Write, 1 - Read */ +#define SMI_R_VALID (1<<27) /* 0 - Write, 1 - Read */ +#define SMI_OP_W (0<<26) /* Write operation */ +#define SMI_OP_R (1<<26) /* Read operation */ + +#define HASH_ADD 0 +#define HASH_DELETE 1 +#define HASH_ADDR_TABLE_SIZE 0x4000 /* 16K (1/2K address - PCR_HS == 1) */ +#define HOP_NUMBER 12 + +#define PHY_WAIT_ITERATIONS 1000 /* 1000 iterations * 10uS = 10mS max */ +#define PHY_WAIT_MICRO_SECONDS 10 + +#define ETH_HW_IP_ALIGN 2 /* hw aligns IP header */ +#define ETH_EXTRA_HEADER (6+6+2+4) + /* dest+src addr+protocol id+crc */ +#define MAX_PKT_SIZE 1536 + + +/* Bit definitions of the SDMA Config Reg */ +#define SDCR_BSZ_OFF 12 +#define SDCR_BSZ8 (3<<SDCR_BSZ_OFF) +#define SDCR_BSZ4 (2<<SDCR_BSZ_OFF) +#define SDCR_BSZ2 (1<<SDCR_BSZ_OFF) +#define SDCR_BSZ1 (0<<SDCR_BSZ_OFF) +#define SDCR_BLMR (1<<6) +#define SDCR_BLMT (1<<7) +#define SDCR_RIFB (1<<9) +#define SDCR_RC_OFF 2 +#define SDCR_RC_MAX_RETRANS (0xf << SDCR_RC_OFF) + +/* SDMA_CMD */ +#define SDMA_CMD_AT (1<<31) +#define SDMA_CMD_TXDL (1<<24) +#define SDMA_CMD_TXDH (1<<23) +#define SDMA_CMD_AR (1<<15) +#define SDMA_CMD_ERD (1<<7) + + +/* Bit definitions of the Port Config Reg */ +#define PCR_HS (1<<12) +#define PCR_EN (1<<7) +#define PCR_PM (1<<0) + +/* Bit definitions of the Port Config Extend Reg */ +#define PCXR_2BSM (1<<28) +#define PCXR_DSCP_EN (1<<21) +#define PCXR_MFL_1518 (0<<14) +#define PCXR_MFL_1536 (1<<14) +#define PCXR_MFL_2048 (2<<14) +#define PCXR_MFL_64K (3<<14) +#define PCXR_FLP (1<<11) +#define PCXR_PRIO_TX_OFF 3 +#define PCXR_TX_HIGH_PRI (7<<PCXR_PRIO_TX_OFF) + +/* + * * Bit definitions of the Interrupt Cause Reg + * * and Interrupt MASK Reg is the same + * */ +#define ICR_RXBUF (1<<0) +#define ICR_TXBUF_H (1<<2) +#define ICR_TXBUF_L (1<<3) +#define ICR_TXEND_H (1<<6) +#define ICR_TXEND_L (1<<7) +#define ICR_RXERR (1<<8) +#define ICR_TXERR_H (1<<10) +#define ICR_TXERR_L (1<<11) +#define ICR_TX_UDR (1<<13) +#define ICR_MII_CH (1<<28) + +#define ALL_INTS (ICR_TXBUF_H | ICR_TXBUF_L | ICR_TX_UDR |\ + ICR_TXERR_H | ICR_TXERR_L |\ + ICR_TXEND_H | ICR_TXEND_L |\ + ICR_RXBUF | ICR_RXERR | ICR_MII_CH) + +#define PHY_MASK 0x0000001f + +#define to_darmdfec(_kd) container_of(_kd, struct armdfec_device, dev) +/* Size of a Tx/Rx descriptor used in chain list data structure */ +#define ARMDFEC_RXQ_DESC_ALIGNED_SIZE \ + (((sizeof(struct rx_desc) / PKTALIGN) + 1) * PKTALIGN) + +#define RX_BUF_OFFSET 0x2 +#define RXQ 0x0 /* RX Queue 0 */ +#define TXQ 0x1 /* TX Queue 1 */ + +struct addr_table_entry_t { + u32 lo; + u32 hi; +}; + +/* Bit fields of a Hash Table Entry */ +enum hash_table_entry { + HTEVALID = 1, + HTESKIP = 2, + HTERD = 4, + HTERDBIT = 2 +}; + +struct tx_desc { + u32 cmd_sts; /* Command/status field */ + u16 reserved; + u16 byte_cnt; /* buffer byte count */ + u8 *buf_ptr; /* pointer to buffer for this descriptor */ + struct tx_desc *nextdesc_p; /* Pointer to next descriptor */ +}; + +struct rx_desc { + u32 cmd_sts; /* Descriptor command status */ + u16 byte_cnt; /* Descriptor buffer byte count */ + u16 buf_size; /* Buffer size */ + u8 *buf_ptr; /* Descriptor buffer pointer */ + struct rx_desc *nxtdesc_p; /* Next descriptor pointer */ +}; + +/* + * Armada100 Fast Ethernet controller Registers + * Refer Datasheet Appendix A.22 + */ +struct armdfec_reg { + u32 phyadr; /* PHY Address */ + u32 pad1[3]; + u32 smi; /* SMI */ + u32 pad2[0xFB]; + u32 pconf; /* Port configuration */ + u32 pad3; + u32 pconf_ext; /* Port configuration extend */ + u32 pad4; + u32 pcmd; /* Port Command */ + u32 pad5; + u32 pstatus; /* Port Status */ + u32 pad6; + u32 spar; /* Serial Parameters */ + u32 pad7; + u32 htpr; /* Hash table pointer */ + u32 pad8; + u32 fcsal; /* Flow control source address low */ + u32 pad9; + u32 fcsah; /* Flow control source address high */ + u32 pad10; + u32 sdma_conf; /* SDMA configuration */ + u32 pad11; + u32 sdma_cmd; /* SDMA command */ + u32 pad12; + u32 ic; /* Interrupt cause */ + u32 iwc; /* Interrupt write to clear */ + u32 im; /* Interrupt mask */ + u32 pad13; + u32 *eth_idscpp[4]; /* Eth0 IP Differentiated Services Code + Point to Priority 0 Low */ + u32 eth_vlan_p; /* Eth0 VLAN Priority Tag to Priority */ + u32 pad14[3]; + struct rx_desc *rxfdp[4]; /* Ethernet First Rx Descriptor + Pointer */ + u32 pad15[4]; + struct rx_desc *rxcdp[4]; /* Ethernet Current Rx Descriptor + Pointer */ + u32 pad16[0x0C]; + struct tx_desc *txcdp[2]; /* Ethernet Current Tx Descriptor + Pointer */ +}; + +struct armdfec_device { + struct eth_device dev; + struct armdfec_reg *regs; + struct tx_desc *p_txdesc; + struct rx_desc *p_rxdesc; + struct rx_desc *p_rxdesc_curr; + u8 *p_rxbuf; + u8 *p_aligned_txbuf; + u8 *htpr; /* hash pointer */ +}; + +#endif /* __ARMADA100_FEC_H__ */ |