/*
* Copyright(c) 2005 - 2006 Attansic Corporation. All rights reserved.
* Copyright(c) 2006 - 2007 Chris Snook <csnook@redhat.com>
* Copyright(c) 2006 - 2008 Jay Cliburn <jcliburn@gmail.com>
*
* Derived from Intel e1000 driver
* Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
*
* 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., 59
* Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef ATL1_H
#define ATL1_H
#include <linux/compiler.h>
#include <linux/ethtool.h>
#include <linux/if_vlan.h>
#include <linux/mii.h>
#include <linux/module.h>
#include <linux/skbuff.h>
#include <linux/spinlock.h>
#include <linux/timer.h>
#include <linux/types.h>
#include <linux/workqueue.h>
#include "atlx.h"
#define ATLX_DRIVER_NAME "atl1"
MODULE_DESCRIPTION("Atheros L1 Gigabit Ethernet Driver");
#define atlx_adapter atl1_adapter
#define atlx_check_for_link atl1_check_for_link
#define atlx_check_link atl1_check_link
#define atlx_hash_mc_addr atl1_hash_mc_addr
#define atlx_hash_set atl1_hash_set
#define atlx_hw atl1_hw
#define atlx_mii_ioctl atl1_mii_ioctl
#define atlx_read_phy_reg atl1_read_phy_reg
#define atlx_set_mac atl1_set_mac
#define atlx_set_mac_addr atl1_set_mac_addr
struct atl1_adapter;
struct atl1_hw;
/* function prototypes needed by multiple files */
u32 atl1_hash_mc_addr(struct atl1_hw *hw, u8 *mc_addr);
void atl1_hash_set(struct atl1_hw *hw, u32 hash_value);
s32 atl1_read_phy_reg(struct atl1_hw *hw, u16 reg_addr, u16 *phy_data);
void atl1_set_mac_addr(struct atl1_hw *hw);
static int atl1_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
int cmd);
static u32 atl1_check_link(struct atl1_adapter *adapter);
extern const struct ethtool_ops atl1_ethtool_ops;
/* hardware definitions specific to L1 */
/* Block IDLE Status Register */
#define IDLE_STATUS_RXMAC 0x1
#define IDLE_STATUS_TXMAC 0x2
#define IDLE_STATUS_RXQ 0x4
#define IDLE_STATUS_TXQ 0x8
#define IDLE_STATUS_DMAR 0x10
#define IDLE_STATUS_DMAW 0x20
#define IDLE_STATUS_SMB 0x40
#define IDLE_STATUS_CMB 0x80
/* MDIO Control Register */
#define MDIO_WAIT_TIMES 30
/* MAC Control Register */
#define MAC_CTRL_TX_PAUSE 0x10000
#define MAC_CTRL_SCNT 0x20000
#define MAC_CTRL_SRST_TX 0x40000
#define MAC_CTRL_TX_SIMURST 0x80000
#define MAC_CTRL_SPEED_SHIFT 20
#define MAC_CTRL_SPEED_MASK 0x300000
#define MAC_CTRL_SPEED_1000 0x2
#define MAC_CTRL_SPEED_10_100 0x1
#define MAC_CTRL_DBG_TX_BKPRESURE 0x400000
#define MAC_CTRL_TX_HUGE 0x800000
#define MAC_CTRL_RX_CHKSUM_EN 0x1000000
#define MAC_CTRL_DBG 0x8000000
/* Wake-On-Lan control register */
#define WOL_CLK_SWITCH_EN 0x8000
#define WOL_PT5_EN 0x200000
#define WOL_PT6_EN 0x400000
#define WOL_PT5_MATCH 0x8000000
#define WOL_PT6_MATCH 0x10000000
/* WOL Length ( 2 DWORD ) */
#define REG_WOL_PATTERN_LEN 0x14A4
#define WOL_PT_LEN_MASK 0x7F
#define WOL_PT0_LEN_SHIFT 0
#define WOL_PT1_LEN_SHIFT 8
#define WOL_PT2_LEN_SHIFT 16
#define WOL_PT3_LEN_SHIFT 24
#define WOL_PT4_LEN_SHIFT 0
#define WOL_PT5_LEN_SHIFT 8
#define WOL_PT6_LEN_SHIFT 16
/* Internal SRAM Partition Registers, low 32 bits */
#define REG_SRAM_RFD_LEN 0x1504
#define REG_SRAM_RRD_ADDR 0x1508
#define REG_SRAM_RRD_LEN 0x150C
#define REG_SRAM_TPD_ADDR 0x1510
#define REG_SRAM_TPD_LEN 0x1514
#define REG_SRAM_TRD_ADDR 0x1518
#define REG_SRAM_TRD_LEN 0x151C
#define REG_SRAM_RXF_ADDR 0x1520
#define REG_SRAM_RXF_LEN 0x1524
#define REG_SRAM_TXF_ADDR 0x1528
#define REG_SRAM_TXF_LEN 0x152C
#define REG_SRAM_TCPH_PATH_ADDR 0x1530
#define SRAM_TCPH_ADDR_MASK 0xFFF
#define SRAM_TCPH_ADDR_SHIFT 0
#define SRAM_PATH_ADDR_MASK 0xFFF
#define SRAM_PATH_ADDR_SHIFT 16
/* Load Ptr Register */
#define REG_LOAD_PTR 0x1534
/* Descriptor Control registers, low 32 bits */
#define REG_DESC_RFD_ADDR_LO 0x1544
#define REG_DESC_RRD_ADDR_LO 0x1548
#define REG_DESC_TPD_ADDR_LO 0x154C
#define REG_DESC_CMB_ADDR_LO 0x1550
#define REG_DESC_SMB_ADDR_LO 0x1554
#define REG_DESC_RFD_RRD_RING_SIZE 0x1558
#define DESC_RFD_RING_SIZE_MASK 0x7FF
#define DESC_RFD_RING_SIZE_SHIFT 0
#define DESC_RRD_RING_SIZE_MASK 0x7FF
#define DESC_RRD_RING_SIZE_SHIFT 16
#define REG_DESC_TPD_RING_SIZE 0x155C
#define DESC_TPD_RING_SIZE_MASK 0x3FF
#define DESC_TPD_RING_SIZE_SHIFT 0
/* TXQ Control Register */
#define REG_TXQ_CTRL 0x1580
#define TXQ_CTRL_TPD_BURST_NUM_SHIFT 0
#define TXQ_CTRL_TPD_BURST_NUM_MASK 0x1F
#define TXQ_CTRL_EN 0x20
#define TXQ_CTRL_ENH_MODE 0x40
#define TXQ_CTRL_TPD_FETCH_TH_SHIFT 8
#define TXQ_CTRL_TPD_FETCH_TH_MASK 0x3F
#define TXQ_CTRL_TXF_BURST_NUM_SHIFT 16
#define TXQ_CTRL_TXF_BURST_NUM_MASK 0xFFFF
/* Jumbo packet Threshold for task offload */
#define REG_TX_JUMBO_TASK_TH_TPD_IPG 0x1584
#define TX_JUMBO_TASK_TH_MASK 0x7FF
#define TX_JUMBO_TASK_TH_SHIFT 0
#define TX_TPD_MIN_IPG_MASK 0x1F
#define TX_TPD_MIN_IPG_SHIFT 16
/* RXQ Control Register */
#define REG_RXQ_CTRL 0x15A0
#define RXQ_CTRL_RFD_BURST_NUM_SHIFT 0
#define RXQ_CTRL_RFD_BURST_NUM_MASK 0xFF
#define RXQ_CTRL_RRD_BURST_THRESH_SHIFT 8
#define RXQ_CTRL_RRD_BURST_THRESH_MASK 0xFF
#define RXQ_CTRL_RFD_PREF_MIN_IPG_SHIFT 16
#define RXQ_CTRL_RFD_PREF_MIN_IPG_MASK 0x1F
#define RXQ_CTRL_CUT_THRU_EN 0x40000000
#define RXQ_CTRL_EN 0x80000000
/* Rx jumbo packet threshold and rrd retirement timer */
#define REG_RXQ_JMBOSZ_RRDTIM 0x15A4
#define RXQ_JMBOSZ_TH_MASK 0x7FF
#define RXQ_JMBOSZ_TH_SHIFT 0
#define RXQ_JMBO_LKAH_MASK 0xF
#define RXQ_JMBO_LKAH_SHIFT 11
#define RXQ_RRD_TIMER_MASK 0xFFFF
#define RXQ_RRD_TIMER_SHIFT 16
/* RFD flow control register */
#define REG_RXQ_RXF_PAUSE_THRESH 0x15A8
#define RXQ_RXF_PAUSE_TH_HI_SHIFT 16
#define RXQ_RXF_PAUSE_TH_HI_MASK 0xFFF
#define RXQ_RXF_PAUSE_TH_LO_SHIFT 0
#define RXQ_RXF_PAUSE_TH_LO_MASK 0xFFF
/* RRD flow control register */
#define REG_RXQ_RRD_PAUSE_THRESH 0x15AC
#define RXQ_RRD_PAUSE_TH_HI_SHIFT 0
#define RXQ_RRD_PAUSE_TH_HI_MASK 0xFFF
#define RXQ_RRD_PAUSE_TH_LO_SHIFT 16
#define RXQ_RRD_PAUSE_TH_LO_MASK 0xFFF
/* DMA Engine Control Register */
#define REG_DMA_CTRL 0x15C0
#define DMA_CTRL_DMAR_IN_ORDER 0x1
#define DMA_CTRL_DMAR_ENH_ORDER 0x2
#define DMA_CTRL_DMAR_OUT_ORDER 0x4
#define DMA_CTRL_RCB_VALUE 0x8
#define DMA_CTRL_DMAR_BURST_LEN_SHIFT 4
#define DMA_CTRL_DMAR_BURST_LEN_MASK 7
#define DMA_CTRL_DMAW_BURST_LEN_SHIFT 7
#define DMA_CTRL_DMAW_BURST_LEN_MASK 7
#define DMA_CTRL_DMAR_EN 0x400
#define DMA_CTRL_DMAW_EN 0x800
/* CMB/SMB Control Register */
#define REG_CSMB_CTRL 0x15D0
#define CSMB_CTRL_CMB_NOW 1
#define CSMB_CTRL_SMB_NOW 2
#define CSMB_CTRL_CMB_EN 4
#define CSMB_CTRL_SMB_EN 8
/* CMB DMA Write Threshold Register */
#define REG_CMB_WRITE_TH 0x15D4
#define CMB_RRD_TH_SHIFT 0
#define CMB_RRD_TH_MASK 0x7FF
#define CMB_TPD_TH_SHIFT 16
#define CMB_TPD_TH_MASK 0x7FF
/* RX/TX count-down timer to trigger CMB-write. 2us resolution. */
#define REG_CMB_WRITE_TIMER 0x15D8
#define CMB_RX_TM_SHIFT 0
#define CMB_RX_TM_MASK 0xFFFF
#define CMB_TX_TM_SHIFT 16
#define CMB_TX_TM_MASK 0xFFFF
/* Number of packet received since last CMB write */
#define REG_CMB_RX_PKT_CNT 0x15DC
/* Number of packet transmitted since last CMB write */
#define REG_CMB_TX_PKT_CNT 0x15E0
/* SMB auto DMA timer register */
#define REG_SMB_TIMER 0x15E4
/* Mailbox Register */
#define REG_MAILBOX 0x15F0
#define MB_RFD_PROD_INDX_SHIFT 0
#define MB_RFD_PROD_INDX_MASK 0x7FF
#define MB_RRD_CONS_INDX_SHIFT 11
#define MB_RRD_CONS_INDX_MASK 0x7FF
#define MB_TPD_PROD_INDX_SHIFT 22
#define MB_TPD_PROD_INDX_MASK 0x3FF
/* Interrupt Status Register */
#define ISR_SMB 0x1
#define ISR_TIMER 0x2
#define ISR_MANUAL 0x4
#define ISR_RXF_OV 0x8
#define ISR_RFD_UNRUN 0x10
#define ISR_RRD_OV 0x20
#define ISR_TXF_UNRUN 0x40
#define ISR_LINK 0x80
#define ISR_HOST_RFD_UNRUN 0x100
#define ISR_HOST_RRD_OV 0x200
#define ISR_DMAR_TO_RST 0x400
#define ISR_DMAW_TO_RST 0x800
#define ISR_GPHY 0x1000
#define ISR_RX_PKT 0x10000
#define ISR_TX_PKT 0x20000
#define ISR_TX_DMA 0x40000
#define ISR_RX_DMA 0x80000
#define ISR_CMB_RX 0x100000
#define ISR_CMB_TX 0x200000
#define ISR_MAC_RX 0x400000
#define ISR_MAC_TX 0x800000
#define ISR_DIS_SMB 0x20000000
#define ISR_DIS_DMA 0x40000000
/* Normal Interrupt mask */
#define IMR_NORMAL_MASK (\
ISR_SMB |\
ISR_GPHY |\
ISR_PHY_LINKDOWN|\
ISR_DMAR_TO_RST |\
ISR_DMAW_TO_RST |\
ISR_CMB_TX |\
ISR_CMB_RX)
/* Debug Interrupt Mask (enable all interrupt) */
#define IMR_DEBUG_MASK (\
ISR_SMB |\
ISR_TIMER |\
ISR_MANUAL |\
ISR_RXF_OV |\
ISR_RFD_UNRUN |\
ISR_RRD_OV |\
ISR_TXF_UNRUN |\
ISR_LINK |\
ISR_CMB_TX |\
ISR_CMB_RX |\
ISR_RX_PKT |\
ISR_TX_PKT |\
ISR_MAC_RX |\
ISR_MAC_TX)
#define MEDIA_TYPE_1000M_FULL 1
#define MEDIA_TYPE_100M_FULL 2
#define MEDIA_TYPE_100M_HALF 3
#define MEDIA_TYPE_10M_FULL 4
#define MEDIA_TYPE_10M_HALF 5
#define AUTONEG_ADVERTISE_SPEED_DEFAULT 0x002F /* All but 1000-Half */
#define MAX_JUMBO_FRAME_SIZE 10240
#define ATL1_EEDUMP_LEN 48
/* Statistics counters collected by the MAC */
struct stats_msg_block {
/* rx */
u32 rx_ok; /* good RX packets */
u32 rx_bcast; /* good RX broadcast packets */
u32 rx_mcast; /* good RX multicast packets */
u32 rx_pause; /* RX pause frames */
u32 rx_ctrl; /* RX control packets other than pause frames */
u32 rx_fcs_err; /* RX packets with bad FCS */
u32 rx_len_err; /* RX packets with length != actual size */
u32 rx_byte_cnt; /* good bytes received. FCS is NOT included */
u32 rx_runt; /* RX packets < 64 bytes with good FCS */
u32 rx_frag; /* RX packets < 64 bytes with bad FCS */
u32 rx_sz_64; /* 64 byte RX packets */
u32 rx_sz_65_127;
u32 rx_sz_128_255;
u32 rx_sz_256_511;
u32 rx_sz_512_1023;
u32 rx_sz_1024_1518;
u32 rx_sz_1519_max; /* 1519 byte to MTU RX packets */
u32 rx_sz_ov; /* truncated RX packets > MTU */
u32 rx_rxf_ov; /* frames dropped due to RX FIFO overflow */
u32 rx_rrd_ov; /* frames dropped due to RRD overflow */
u32 rx_align_err; /* alignment errors */
u32 rx_bcast_byte_cnt; /* RX broadcast bytes, excluding FCS */
u32 rx_mcast_byte_cnt; /* RX multicast bytes, excluding FCS */
u32 rx_err_addr; /* packets dropped due to address filtering */
/* tx */
u32 tx_ok; /* good TX packets */
u32 tx_bcast; /* good TX broadcast packets */
u32 tx_mcast; /* good TX multicast packets */
u32 tx_pause; /* TX pause frames */
u32 tx_exc_defer; /* TX packets deferred excessively */
u32 tx_ctrl; /* TX control frames, excluding pause frames */
u32 tx_defer; /* TX packets deferred */
u32 tx_byte_cnt; /* bytes transmitted, FCS is NOT included */
u32 tx_sz_64; /* 64 byte TX packets */
u32 tx_sz_65_127;
u32 tx_sz_128_255;
u32 tx_sz_256_511;
u32 tx_sz_512_1023;
u32 tx_sz_1024_1518;
u32 tx_sz_1519_max; /* 1519 byte to MTU TX packets */
u32 tx_1_col; /* packets TX after a single collision */
u32 tx_2_col; /* packets TX after multiple collisions */
u32 tx_late_col; /* TX packets with late collisions */
u32 tx_abort_col; /* TX packets aborted w/excessive collisions */
u32 tx_underrun; /* TX packets aborted due to TX FIFO underrun
* or TRD FIFO underrun */
u32 tx_rd_eop; /* reads beyond the EOP into the next frame
* when TRD was not written timely */
u32 tx_len_err; /* TX packets where length != actual size */
u32 tx_trunc; /* TX packets truncated due to size > MTU */
u32 tx_bcast_byte; /* broadcast bytes transmitted, excluding FCS */
u32 tx_mcast_byte; /* multicast bytes transmitted, excluding FCS */
u32 smb_updated; /* 1: SMB Updated. This is used by software to
* indicate the statistics update. Software
* should clear this bit after retrieving the
* statistics information. */
};
/* Coalescing Message Block */
struct coals_msg_block {
u32 int_stats; /* interrupt status */
u16 rrd_prod_idx; /* TRD Producer Index. */
u16 rfd_cons_idx; /* RFD Consumer Index. */
u16 update; /* Selene sets this bit every time it DMAs the
* CMB to host memory. Software should clear
* this bit when CMB info is processed. */
u16 tpd_cons_idx; /* TPD Consumer Index. */
};
/* RRD descriptor */
struct rx_return_desc {
u8 num_buf; /* Number of RFD buffers used by the received packet */
u8 resved;
u16 buf_indx; /* RFD Index of the first buffer */
union {
u32 valid;
struct {
u16 rx_chksum;
u16 pkt_size;
} xsum_sz;
} xsz;
u16 pkt_flg; /* Packet flags */
u16 err_flg; /* Error flags */
u16 resved2;
u16 vlan_tag; /* VLAN TAG */
};
#define PACKET_FLAG_ETH_TYPE 0x0080
#define PACKET_FLAG_VLAN_INS 0x0100
#define PACKET_FLAG_ERR 0x0200
#define PACKET_FLAG_IPV4 0x0400
#define PACKET_FLAG_UDP 0x0800
#define PACKET_FLAG_TCP 0x1000
#define PACKET_FLAG_BCAST 0x2000
#define PACKET_FLAG_MCAST 0x4000
#define PACKET_FLAG_PAUSE 0x8000
#define ERR_FLAG_CRC 0x0001
#define ERR_FLAG_CODE 0x0002
#define ERR_FLAG_DRIBBLE 0x0004
#define ERR_FLAG_RUNT 0x0008
#define ERR_FLAG_OV 0x0010
#define ERR_FLAG_TRUNC 0x0020
#define ERR_FLAG_IP_CHKSUM 0x0040
#define ERR_FLAG_L4_CHKSUM 0x0080
#define ERR_FLAG_LEN 0x0100
#define ERR_FLAG_DES_ADDR 0x0200
/* RFD descriptor */
struct rx_free_desc {
__le64 buffer_addr; /* Address of the descriptor's data buffer */
__le16 buf_len; /* Size of the receive buffer in host memory */
u16 coalese; /* Update consumer index to host after the
* reception of this frame */
/* __attribute__ ((packed)) is required */
} __attribute__ ((packed));
/*
* The L1 transmit packet descriptor is comprised of four 32-bit words.
*
* 31 0
* +---------------------------------------+
* | Word 0: Buffer addr lo |
* +---------------------------------------+
* | Word 1: Buffer addr hi |
* +---------------------------------------+
* | Word 2 |
* +---------------------------------------+
* | Word 3 |
* +---------------------------------------+
*
* Words 0 and 1 combine to form a 64-bit buffer address.
*
* Word 2 is self explanatory in the #define block below.
*
* Word 3 has two forms, depending upon the state of bits 3 and 4.
* If bits 3 and 4 are both zero, then bits 14:31 are unused by the
* hardware. Otherwise, if either bit 3 or 4 is set, the definition
* of bits 14:31 vary according to the following depiction.
*
* 0 End of packet 0 End of packet
* 1 Coalesce 1 Coalesce
* 2 Insert VLAN tag 2 Insert VLAN tag
* 3 Custom csum enable = 0 3 Custom csum enable = 1
* 4 Segment enable = 1 4 Segment enable = 0
* 5 Generate IP checksum 5 Generate IP checksum
* 6 Generate TCP checksum 6 Generate TCP checksum
* 7 Generate UDP checksum 7 Generate UDP checksum
* 8 VLAN tagged 8 VLAN tagged
* 9 Ethernet frame type 9 Ethernet frame type
* 10-+ 10-+
* 11 | IP hdr length (10:13) 11 | IP hdr length (10:13)
* 12 | (num 32-bit words) 12 | (num 32-bit words)
* 13-+ 13-+
* 14-+ 14 Unused
* 15 | TCP hdr length (14:17) 15 Unused
* 16 | (num 32-bit words) 16-+
* 17-+ 17 |
* 18 Header TPD flag 18 |
* 19-+ 19 | Payload offset
* 20 | 20 | (16:23)
* 21 | 21 |
* 22 | 22 |
* 23 | 23-+
* 24 | 24-+
* 25 | MSS (19:31) 25 |
* 26 | 26 |
* 27 | 27 | Custom csum offset
* 28 | 28 | (24:31)
* 29 | 29 |
* 30 | 30 |
* 31-+ 31-+
*/
/* tpd word 2 */
#define TPD_BUFLEN_MASK 0x3FFF
#define TPD_BUFLEN_SHIFT 0
#define TPD_DMAINT_MASK 0x0001
#define TPD_DMAINT_SHIFT 14
#define TPD_PKTNT_MASK 0x0001
#define TPD_PKTINT_SHIFT 15
#define TPD_VLANTAG_MASK 0xFFFF
#define TPD_VLANTAG_SHIFT 16
/* tpd word 3 bits 0:13 */
#define TPD_EOP_MASK 0x0001
#define TPD_EOP_SHIFT 0
#define TPD_COALESCE_MASK 0x0001
#define TPD_COALESCE_SHIFT 1
#define TPD_INS_VL_TAG_MASK 0x0001
#define TPD_INS_VL_TAG_SHIFT 2
#define TPD_CUST_CSUM_EN_MASK 0x0001
#define TPD_CUST_CSUM_EN_SHIFT 3
#define TPD_SEGMENT_EN_MASK 0x0001
#define TPD_SEGMENT_EN_SHIFT 4
#define TPD_IP_CSUM_MASK 0x0001
#define TPD_IP_CSUM_SHIFT 5
#define TPD_TCP_CSUM_MASK 0x0001
#define TPD_TCP_CSUM_SHIFT 6
#define TPD_UDP_CSUM_MASK 0x0001
#define TPD_UDP_CSUM_SHIFT 7
#define TPD_VL_TAGGED_MASK 0x0001
#define TPD_VL_TAGGED_SHIFT 8
#define TPD_ETHTYPE_MASK 0x0001
#define TPD_ETHTYPE_SHIFT 9
#define TPD_IPHL_MASK 0x000F
#define TPD_IPHL_SHIFT 10
/* tpd word 3 bits 14:31 if segment enabled */
#define TPD_TCPHDRLEN_MASK 0x000F
#define TPD_TCPHDRLEN_SHIFT 14
#define TPD_HDRFLAG_MASK 0x0001
#define TPD_HDRFLAG_SHIFT 18
#define TPD_MSS_MASK 0x1FFF
#define TPD_MSS_SHIFT 19
/* tpd word 3 bits 16:31 if custom csum enabled */
#define TPD_PLOADOFFSET_MASK 0x00FF
#define TPD_PLOADOFFSET_SHIFT 16
#define TPD_CCSUMOFFSET_MASK 0x00FF
#define TPD_CCSUMOFFSET_SHIFT 24
struct tx_packet_desc {
__le64 buffer_addr;
__le32 word2;
__le32 word3;
};
/* DMA Order Settings */
enum atl1_dma_order {
atl1_dma_ord_in = 1,
atl1_dma_ord_enh = 2,
atl1_dma_ord_out = 4
};
enum atl1_dma_rcb {
atl1_rcb_64 = 0,
atl1_rcb_128 = 1
};
enum atl1_dma_req_block {
atl1_dma_req_128 = 0,
atl1_dma_req_256 = 1,
atl1_dma_req_512 = 2,
atl1_dma_req_1024 = 3,
atl1_dma_req_2048 = 4,
atl1_dma_req_4096 = 5
};
#define ATL1_MAX_INTR 3
#define ATL1_MAX_TX_BUF_LEN 0x3000 /* 12288 bytes */
#define ATL1_DEFAULT_TPD 256
#define ATL1_MAX_TPD 1024
#define ATL1_MIN_TPD 64
#define ATL1_DEFAULT_RFD 512
#define ATL1_MIN_RFD 128
#define ATL1_MAX_RFD 2048
#define ATL1_REG_COUNT 1538
#define ATL1_GET_DESC(R, i, type) (&(((type *)((R)->desc))[i]))
#define ATL1_RFD_DESC(R, i) ATL1_GET_DESC(R, i, struct rx_free_desc)
#define ATL1_TPD_DESC(R, i) ATL1_GET_DESC(R, i, struct tx_packet_desc)
#define ATL1_RRD_DESC(R, i) ATL1_GET_DESC(R, i, struct rx_return_desc)
/*
* atl1_ring_header represents a single, contiguous block of DMA space
* mapped for the three descriptor rings (tpd, rfd, rrd) and the two
* message blocks (cmb, smb) described below
*/
struct atl1_ring_header {
void *desc; /* virtual address */
dma_addr_t dma; /* physical address*/
unsigned int size; /* length in bytes */
};
/*
* atl1_buffer is wrapper around a pointer to a socket buffer
* so a DMA handle can be stored along with the skb
*/
struct atl1_buffer {
struct sk_buff *skb; /* socket buffer */
u16 length; /* rx buffer length */
u16 alloced; /* 1 if skb allocated */
dma_addr_t dma;
};
/* transmit packet descriptor (tpd) ring */
struct atl1_tpd_ring {
void *desc; /* descriptor ring virtual address */
dma_addr_t dma; /* descriptor ring physical address */
u16 size; /* descriptor ring length in bytes */
u16 count; /* number of descriptors in the ring */
u16 hw_idx; /* hardware index */
atomic_t next_to_clean;
atomic_t next_to_use;
struct atl1_buffer *buffer_info;
};
/* receive free descriptor (rfd) ring */
struct atl1_rfd_ring {
void *desc; /* descriptor ring virtual address */
dma_addr_t dma; /* descriptor ring physical address */
u16 size; /* descriptor ring length in bytes */
u16 count; /* number of descriptors in the ring */
atomic_t next_to_use;
u16 next_to_clean;
struct atl1_buffer *buffer_info;
};
/* receive return descriptor (rrd) ring */
struct atl1_rrd_ring {
void *desc; /* descriptor ring virtual address */
dma_addr_t dma; /* descriptor ring physical address */
unsigned int size; /* descriptor ring length in bytes */
u16 count; /* number of descriptors in the ring */
u16 next_to_use;
atomic_t next_to_clean;
};
/* coalescing message block (cmb) */
struct atl1_cmb {
struct coals_msg_block *cmb;
dma_addr_t dma;
};
/* statistics message block (smb) */
struct atl1_smb {
struct stats_msg_block *smb;
dma_addr_t dma;
};
/* Statistics counters */
struct atl1_sft_stats {
u64 rx_packets;
u64 tx_packets;
u64 rx_bytes;
u64 tx_bytes;
u64 multicast;
u64 collisions;
u64 rx_errors;
u64 rx_length_errors;
u64 rx_crc_errors;
u64 rx_frame_errors;
u64 rx_fifo_errors;
u64 rx_missed_errors;
u64 tx_errors;
u64 tx_fifo_errors;
u64 tx_aborted_errors;
u64 tx_window_errors;
u64 tx_carrier_errors;
u64 tx_pause; /* TX pause frames */
u64 excecol; /* TX packets w/ excessive collisions */
u64 deffer; /* TX packets deferred */
u64 scc; /* packets TX after a single collision */
u64 mcc; /* packets TX after multiple collisions */
u64 latecol; /* TX packets w/ late collisions */
u64 tx_underun; /* TX packets aborted due to TX FIFO underrun
* or TRD FIFO underrun */
u64 tx_trunc; /* TX packets truncated due to size > MTU */
u64 rx_pause; /* num Pause packets received. */
u64 rx_rrd_ov;
u64 rx_trunc;
};
/* hardware structure */
struct atl1_hw {
u8 __iomem *hw_addr;
struct atl1_adapter *back;
enum atl1_dma_order dma_ord;
enum atl1_dma_rcb rcb_value;
enum atl1_dma_req_block dmar_block;
enum atl1_dma_req_block dmaw_block;
u8 preamble_len;
u8 max_retry;
u8 jam_ipg; /* IPG to start JAM for collision based flow
* control in half-duplex mode. In units of
* 8-bit time */
u8 ipgt; /* Desired back to back inter-packet gap.
* The default is 96-bit time */
u8 min_ifg; /* Minimum number of IFG to enforce in between
* receive frames. Frame gap below such IFP
* is dropped */
u8 ipgr1; /* 64bit Carrier-Sense window */
u8 ipgr2; /* 96-bit IPG window */
u8 tpd_burst; /* Number of TPD to prefetch in cache-aligned
* burst. Each TPD is 16 bytes long */
u8 rfd_burst; /* Number of RFD to prefetch in cache-aligned
* burst. Each RFD is 12 bytes long */
u8 rfd_fetch_gap;
u8 rrd_burst; /* Threshold number of RRDs that can be retired
* in a burst. Each RRD is 16 bytes long */
u8 tpd_fetch_th;
u8 tpd_fetch_gap;
u16 tx_jumbo_task_th;
u16 txf_burst; /* Number of data bytes to read in a cache-
* aligned burst. Each SRAM entry is 8 bytes */
u16 rx_jumbo_th; /* Jumbo packet size for non-VLAN packet. VLAN
* packets should add 4 bytes */
u16 rx_jumbo_lkah;
u16 rrd_ret_timer; /* RRD retirement timer. Decrement by 1 after
* every 512ns passes. */
u16 lcol; /* Collision Window */
u16 cmb_tpd;
u16 cmb_rrd;
u16 cmb_rx_timer;
u16 cmb_tx_timer;
u32 smb_timer;
u16 media_type;
u16 autoneg_advertised;
u16 mii_autoneg_adv_reg;
u16 mii_1000t_ctrl_reg;
u32 max_frame_size;
u32 min_frame_size;
u16 dev_rev;
/* spi flash */
u8 flash_vendor;
u8 mac_addr[ETH_ALEN];
u8 perm_mac_addr[ETH_ALEN];
bool phy_configured;
};
struct atl1_adapter {
struct net_device *netdev;
struct pci_dev *pdev;
struct atl1_sft_stats soft_stats;
struct vlan_group *vlgrp;
u32 rx_buffer_len;
u32 wol;
u16 link_speed;
u16 link_duplex;
spinlock_t lock;
struct work_struct tx_timeout_task;
struct work_struct link_chg_task;
struct work_struct pcie_dma_to_rst_task;
struct timer_list phy_config_timer;
bool phy_timer_pending;
/* all descriptor rings' memory */
struct atl1_ring_header ring_header;
/* TX */
struct atl1_tpd_ring tpd_ring;
spinlock_t mb_lock;
/* RX */
struct atl1_rfd_ring rfd_ring;
struct atl1_rrd_ring rrd_ring;
u64 hw_csum_err;
u64 hw_csum_good;
u32 msg_enable;
u16 imt; /* interrupt moderator timer (2us resolution) */
u16 ict; /* interrupt clear timer (2us resolution */
struct mii_if_info mii; /* MII interface info */
u32 bd_number; /* board number */
bool pci_using_64;
struct atl1_hw hw;
struct atl1_smb smb;
struct atl1_cmb cmb;
};
#endif /* ATL1_H */
