net: Adds Fast Ethernet Controller driver for Armada100
This patch adds support for Fast Ethernet Controller driver for
Armada100 series.
Signed-off-by: Ajay Bhargav <ajay.bhargav@einfochips.com>
Signed-off-by: Prafulla Wadaskar <prafulla@marvell.com>
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__ */