[e16e8f2] | 1 | /* Advanced Micro Devices Inc. AMD8111E Linux Network Driver |
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| 2 | * Copyright (C) 2004 Advanced Micro Devices |
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| 3 | * Copyright (C) 2005 Liu Tao <liutao1980@gmail.com> [etherboot port] |
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| 4 | * |
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| 5 | * Copyright 2001,2002 Jeff Garzik <jgarzik@mandrakesoft.com> [ 8139cp.c,tg3.c ] |
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| 6 | * Copyright (C) 2001, 2002 David S. Miller (davem@redhat.com)[ tg3.c] |
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| 7 | * Copyright 1996-1999 Thomas Bogendoerfer [ pcnet32.c ] |
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| 8 | * Derived from the lance driver written 1993,1994,1995 by Donald Becker. |
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| 9 | * Copyright 1993 United States Government as represented by the |
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| 10 | * Director, National Security Agency.[ pcnet32.c ] |
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| 11 | * Carsten Langgaard, carstenl@mips.com [ pcnet32.c ] |
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| 12 | * Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved. |
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| 13 | * |
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| 14 | * |
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| 15 | * This program is free software; you can redistribute it and/or modify |
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| 16 | * it under the terms of the GNU General Public License as published by |
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| 17 | * the Free Software Foundation; either version 2 of the License, or |
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| 18 | * (at your option) any later version. |
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| 19 | * |
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| 20 | * This program is distributed in the hope that it will be useful, |
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| 21 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 22 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 23 | * GNU General Public License for more details. |
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| 24 | * |
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| 25 | * You should have received a copy of the GNU General Public License |
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| 26 | * along with this program; if not, write to the Free Software |
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| 27 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
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| 28 | * USA |
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| 29 | */ |
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| 30 | |
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| 31 | FILE_LICENCE ( GPL2_OR_LATER ); |
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| 32 | |
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| 33 | #include "etherboot.h" |
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| 34 | #include "nic.h" |
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| 35 | #include "mii.h" |
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| 36 | #include <gpxe/pci.h> |
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| 37 | #include <gpxe/ethernet.h> |
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| 38 | #include "string.h" |
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| 39 | #include "stdint.h" |
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| 40 | #include "amd8111e.h" |
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| 41 | |
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| 42 | |
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| 43 | /* driver definitions */ |
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| 44 | #define NUM_TX_SLOTS 2 |
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| 45 | #define NUM_RX_SLOTS 4 |
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| 46 | #define TX_SLOTS_MASK 1 |
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| 47 | #define RX_SLOTS_MASK 3 |
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| 48 | |
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| 49 | #define TX_BUF_LEN 1536 |
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| 50 | #define RX_BUF_LEN 1536 |
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| 51 | |
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| 52 | #define TX_PKT_LEN_MAX (ETH_FRAME_LEN - ETH_HLEN) |
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| 53 | #define RX_PKT_LEN_MIN 60 |
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| 54 | #define RX_PKT_LEN_MAX ETH_FRAME_LEN |
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| 55 | |
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| 56 | #define TX_TIMEOUT 3000 |
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| 57 | #define TX_PROCESS_TIME 10 |
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| 58 | #define TX_RETRY (TX_TIMEOUT / TX_PROCESS_TIME) |
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| 59 | |
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| 60 | #define PHY_RW_RETRY 10 |
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| 61 | |
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| 62 | |
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| 63 | struct amd8111e_tx_desc { |
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| 64 | u16 buf_len; |
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| 65 | u16 tx_flags; |
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| 66 | u16 tag_ctrl_info; |
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| 67 | u16 tag_ctrl_cmd; |
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| 68 | u32 buf_phy_addr; |
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| 69 | u32 reserved; |
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| 70 | }; |
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| 71 | |
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| 72 | struct amd8111e_rx_desc { |
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| 73 | u32 reserved; |
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| 74 | u16 msg_len; |
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| 75 | u16 tag_ctrl_info; |
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| 76 | u16 buf_len; |
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| 77 | u16 rx_flags; |
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| 78 | u32 buf_phy_addr; |
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| 79 | }; |
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| 80 | |
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| 81 | struct eth_frame { |
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| 82 | u8 dst_addr[ETH_ALEN]; |
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| 83 | u8 src_addr[ETH_ALEN]; |
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| 84 | u16 type; |
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| 85 | u8 data[ETH_FRAME_LEN - ETH_HLEN]; |
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| 86 | } __attribute__((packed)); |
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| 87 | |
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| 88 | struct amd8111e_priv { |
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| 89 | struct amd8111e_tx_desc tx_ring[NUM_TX_SLOTS]; |
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| 90 | struct amd8111e_rx_desc rx_ring[NUM_RX_SLOTS]; |
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| 91 | unsigned char tx_buf[NUM_TX_SLOTS][TX_BUF_LEN]; |
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| 92 | unsigned char rx_buf[NUM_RX_SLOTS][RX_BUF_LEN]; |
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| 93 | unsigned long tx_idx, rx_idx; |
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| 94 | int tx_consistent; |
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| 95 | |
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| 96 | char opened; |
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| 97 | char link; |
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| 98 | char speed; |
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| 99 | char duplex; |
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| 100 | int ext_phy_addr; |
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| 101 | u32 ext_phy_id; |
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| 102 | |
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| 103 | struct pci_device *pdev; |
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| 104 | struct nic *nic; |
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| 105 | void *mmio; |
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| 106 | }; |
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| 107 | |
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| 108 | static struct amd8111e_priv amd8111e; |
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| 109 | |
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| 110 | |
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| 111 | /******************************************************** |
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| 112 | * locale functions * |
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| 113 | ********************************************************/ |
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| 114 | static void amd8111e_init_hw_default(struct amd8111e_priv *lp); |
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| 115 | static int amd8111e_start(struct amd8111e_priv *lp); |
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| 116 | static int amd8111e_read_phy(struct amd8111e_priv *lp, int phy_addr, int reg, u32 *val); |
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| 117 | #if 0 |
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| 118 | static int amd8111e_write_phy(struct amd8111e_priv *lp, int phy_addr, int reg, u32 val); |
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| 119 | #endif |
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| 120 | static void amd8111e_probe_ext_phy(struct amd8111e_priv *lp); |
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| 121 | static void amd8111e_disable_interrupt(struct amd8111e_priv *lp); |
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| 122 | static void amd8111e_enable_interrupt(struct amd8111e_priv *lp); |
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| 123 | static void amd8111e_force_interrupt(struct amd8111e_priv *lp); |
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| 124 | static int amd8111e_get_mac_address(struct amd8111e_priv *lp); |
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| 125 | static int amd8111e_init_rx_ring(struct amd8111e_priv *lp); |
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| 126 | static int amd8111e_init_tx_ring(struct amd8111e_priv *lp); |
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| 127 | static int amd8111e_wait_tx_ring(struct amd8111e_priv *lp, unsigned int index); |
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| 128 | static void amd8111e_wait_link(struct amd8111e_priv *lp); |
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| 129 | static void amd8111e_poll_link(struct amd8111e_priv *lp); |
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| 130 | static void amd8111e_restart(struct amd8111e_priv *lp); |
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| 131 | |
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| 132 | |
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| 133 | /* |
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| 134 | * This function clears necessary the device registers. |
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| 135 | */ |
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| 136 | static void amd8111e_init_hw_default(struct amd8111e_priv *lp) |
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| 137 | { |
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| 138 | unsigned int reg_val; |
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| 139 | void *mmio = lp->mmio; |
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| 140 | |
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| 141 | /* stop the chip */ |
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| 142 | writel(RUN, mmio + CMD0); |
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| 143 | |
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| 144 | /* Clear RCV_RING_BASE_ADDR */ |
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| 145 | writel(0, mmio + RCV_RING_BASE_ADDR0); |
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| 146 | |
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| 147 | /* Clear XMT_RING_BASE_ADDR */ |
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| 148 | writel(0, mmio + XMT_RING_BASE_ADDR0); |
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| 149 | writel(0, mmio + XMT_RING_BASE_ADDR1); |
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| 150 | writel(0, mmio + XMT_RING_BASE_ADDR2); |
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| 151 | writel(0, mmio + XMT_RING_BASE_ADDR3); |
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| 152 | |
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| 153 | /* Clear CMD0 */ |
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| 154 | writel(CMD0_CLEAR, mmio + CMD0); |
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| 155 | |
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| 156 | /* Clear CMD2 */ |
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| 157 | writel(CMD2_CLEAR, mmio + CMD2); |
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| 158 | |
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| 159 | /* Clear CMD7 */ |
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| 160 | writel(CMD7_CLEAR, mmio + CMD7); |
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| 161 | |
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| 162 | /* Clear DLY_INT_A and DLY_INT_B */ |
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| 163 | writel(0x0, mmio + DLY_INT_A); |
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| 164 | writel(0x0, mmio + DLY_INT_B); |
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| 165 | |
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| 166 | /* Clear FLOW_CONTROL */ |
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| 167 | writel(0x0, mmio + FLOW_CONTROL); |
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| 168 | |
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| 169 | /* Clear INT0 write 1 to clear register */ |
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| 170 | reg_val = readl(mmio + INT0); |
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| 171 | writel(reg_val, mmio + INT0); |
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| 172 | |
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| 173 | /* Clear STVAL */ |
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| 174 | writel(0x0, mmio + STVAL); |
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| 175 | |
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| 176 | /* Clear INTEN0 */ |
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| 177 | writel(INTEN0_CLEAR, mmio + INTEN0); |
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| 178 | |
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| 179 | /* Clear LADRF */ |
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| 180 | writel(0x0, mmio + LADRF); |
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| 181 | |
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| 182 | /* Set SRAM_SIZE & SRAM_BOUNDARY registers */ |
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| 183 | writel(0x80010, mmio + SRAM_SIZE); |
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| 184 | |
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| 185 | /* Clear RCV_RING0_LEN */ |
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| 186 | writel(0x0, mmio + RCV_RING_LEN0); |
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| 187 | |
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| 188 | /* Clear XMT_RING0/1/2/3_LEN */ |
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| 189 | writel(0x0, mmio + XMT_RING_LEN0); |
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| 190 | writel(0x0, mmio + XMT_RING_LEN1); |
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| 191 | writel(0x0, mmio + XMT_RING_LEN2); |
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| 192 | writel(0x0, mmio + XMT_RING_LEN3); |
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| 193 | |
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| 194 | /* Clear XMT_RING_LIMIT */ |
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| 195 | writel(0x0, mmio + XMT_RING_LIMIT); |
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| 196 | |
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| 197 | /* Clear MIB */ |
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| 198 | writew(MIB_CLEAR, mmio + MIB_ADDR); |
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| 199 | |
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| 200 | /* Clear LARF */ |
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| 201 | writel( 0, mmio + LADRF); |
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| 202 | writel( 0, mmio + LADRF + 4); |
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| 203 | |
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| 204 | /* SRAM_SIZE register */ |
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| 205 | reg_val = readl(mmio + SRAM_SIZE); |
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| 206 | |
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| 207 | /* Set default value to CTRL1 Register */ |
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| 208 | writel(CTRL1_DEFAULT, mmio + CTRL1); |
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| 209 | |
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| 210 | /* To avoid PCI posting bug */ |
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| 211 | readl(mmio + CMD2); |
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| 212 | } |
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| 213 | |
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| 214 | /* |
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| 215 | * This function initializes the device registers and starts the device. |
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| 216 | */ |
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| 217 | static int amd8111e_start(struct amd8111e_priv *lp) |
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| 218 | { |
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| 219 | struct nic *nic = lp->nic; |
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| 220 | void *mmio = lp->mmio; |
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| 221 | int i, reg_val; |
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| 222 | |
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| 223 | /* stop the chip */ |
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| 224 | writel(RUN, mmio + CMD0); |
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| 225 | |
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| 226 | /* AUTOPOLL0 Register *//*TBD default value is 8100 in FPS */ |
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| 227 | writew(0x8100 | lp->ext_phy_addr, mmio + AUTOPOLL0); |
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| 228 | |
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| 229 | /* enable the port manager and set auto negotiation always */ |
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| 230 | writel(VAL1 | EN_PMGR, mmio + CMD3 ); |
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| 231 | writel(XPHYANE | XPHYRST, mmio + CTRL2); |
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| 232 | |
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| 233 | /* set control registers */ |
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| 234 | reg_val = readl(mmio + CTRL1); |
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| 235 | reg_val &= ~XMTSP_MASK; |
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| 236 | writel(reg_val | XMTSP_128 | CACHE_ALIGN, mmio + CTRL1); |
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| 237 | |
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| 238 | /* initialize tx and rx ring base addresses */ |
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| 239 | amd8111e_init_tx_ring(lp); |
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| 240 | amd8111e_init_rx_ring(lp); |
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| 241 | writel(virt_to_bus(lp->tx_ring), mmio + XMT_RING_BASE_ADDR0); |
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| 242 | writel(virt_to_bus(lp->rx_ring), mmio + RCV_RING_BASE_ADDR0); |
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| 243 | writew(NUM_TX_SLOTS, mmio + XMT_RING_LEN0); |
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| 244 | writew(NUM_RX_SLOTS, mmio + RCV_RING_LEN0); |
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| 245 | |
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| 246 | /* set default IPG to 96 */ |
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| 247 | writew(DEFAULT_IPG, mmio + IPG); |
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| 248 | writew(DEFAULT_IPG - IFS1_DELTA, mmio + IFS1); |
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| 249 | |
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| 250 | /* AutoPAD transmit, Retransmit on Underflow */ |
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| 251 | writel(VAL0 | APAD_XMT | REX_RTRY | REX_UFLO, mmio + CMD2); |
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| 252 | |
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| 253 | /* JUMBO disabled */ |
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| 254 | writel(JUMBO, mmio + CMD3); |
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| 255 | |
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| 256 | /* Setting the MAC address to the device */ |
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| 257 | for(i = 0; i < ETH_ALEN; i++) |
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| 258 | writeb(nic->node_addr[i], mmio + PADR + i); |
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| 259 | |
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| 260 | /* set RUN bit to start the chip, interrupt not enabled */ |
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| 261 | writel(VAL2 | RDMD0 | VAL0 | RUN, mmio + CMD0); |
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| 262 | |
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| 263 | /* To avoid PCI posting bug */ |
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| 264 | readl(mmio + CMD0); |
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| 265 | return 0; |
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| 266 | } |
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| 267 | |
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| 268 | /* |
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| 269 | This function will read the PHY registers. |
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| 270 | */ |
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| 271 | static int amd8111e_read_phy(struct amd8111e_priv *lp, int phy_addr, int reg, u32 *val) |
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| 272 | { |
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| 273 | void *mmio = lp->mmio; |
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| 274 | unsigned int reg_val; |
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| 275 | unsigned int retry = PHY_RW_RETRY; |
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| 276 | |
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| 277 | reg_val = readl(mmio + PHY_ACCESS); |
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| 278 | while (reg_val & PHY_CMD_ACTIVE) |
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| 279 | reg_val = readl(mmio + PHY_ACCESS); |
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| 280 | |
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| 281 | writel(PHY_RD_CMD | ((phy_addr & 0x1f) << 21) | ((reg & 0x1f) << 16), |
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| 282 | mmio + PHY_ACCESS); |
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| 283 | do { |
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| 284 | reg_val = readl(mmio + PHY_ACCESS); |
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| 285 | udelay(30); /* It takes 30 us to read/write data */ |
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| 286 | } while (--retry && (reg_val & PHY_CMD_ACTIVE)); |
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| 287 | |
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| 288 | if (reg_val & PHY_RD_ERR) { |
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| 289 | *val = 0; |
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| 290 | return -1; |
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| 291 | } |
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| 292 | |
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| 293 | *val = reg_val & 0xffff; |
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| 294 | return 0; |
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| 295 | } |
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| 296 | |
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| 297 | /* |
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| 298 | This function will write into PHY registers. |
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| 299 | */ |
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| 300 | #if 0 |
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| 301 | static int amd8111e_write_phy(struct amd8111e_priv *lp, int phy_addr, int reg, u32 val) |
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| 302 | { |
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| 303 | void *mmio = lp->mmio; |
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| 304 | unsigned int reg_val; |
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| 305 | unsigned int retry = PHY_RW_RETRY; |
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| 306 | |
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| 307 | reg_val = readl(mmio + PHY_ACCESS); |
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| 308 | while (reg_val & PHY_CMD_ACTIVE) |
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| 309 | reg_val = readl(mmio + PHY_ACCESS); |
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| 310 | |
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| 311 | writel(PHY_WR_CMD | ((phy_addr & 0x1f) << 21) | ((reg & 0x1f) << 16) | val, |
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| 312 | mmio + PHY_ACCESS); |
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| 313 | do { |
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| 314 | reg_val = readl(mmio + PHY_ACCESS); |
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| 315 | udelay(30); /* It takes 30 us to read/write the data */ |
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| 316 | } while (--retry && (reg_val & PHY_CMD_ACTIVE)); |
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| 317 | |
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| 318 | if(reg_val & PHY_RD_ERR) |
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| 319 | return -1; |
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| 320 | |
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| 321 | return 0; |
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| 322 | } |
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| 323 | #endif |
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| 324 | |
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| 325 | static void amd8111e_probe_ext_phy(struct amd8111e_priv *lp) |
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| 326 | { |
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| 327 | int i; |
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| 328 | |
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| 329 | lp->ext_phy_id = 0; |
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| 330 | lp->ext_phy_addr = 1; |
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| 331 | |
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| 332 | for (i = 0x1e; i >= 0; i--) { |
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| 333 | u32 id1, id2; |
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| 334 | |
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| 335 | if (amd8111e_read_phy(lp, i, MII_PHYSID1, &id1)) |
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| 336 | continue; |
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| 337 | if (amd8111e_read_phy(lp, i, MII_PHYSID2, &id2)) |
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| 338 | continue; |
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| 339 | lp->ext_phy_id = (id1 << 16) | id2; |
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| 340 | lp->ext_phy_addr = i; |
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| 341 | break; |
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| 342 | } |
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| 343 | |
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| 344 | if (lp->ext_phy_id) |
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| 345 | printf("Found MII PHY ID 0x%08x at address 0x%02x\n", |
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| 346 | (unsigned int) lp->ext_phy_id, lp->ext_phy_addr); |
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| 347 | else |
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| 348 | printf("Couldn't detect MII PHY, assuming address 0x01\n"); |
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| 349 | } |
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| 350 | |
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| 351 | static void amd8111e_disable_interrupt(struct amd8111e_priv *lp) |
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| 352 | { |
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| 353 | void *mmio = lp->mmio; |
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| 354 | unsigned int int0; |
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| 355 | |
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| 356 | writel(INTREN, mmio + CMD0); |
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| 357 | writel(INTEN0_CLEAR, mmio + INTEN0); |
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| 358 | int0 = readl(mmio + INT0); |
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| 359 | writel(int0, mmio + INT0); |
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| 360 | readl(mmio + INT0); |
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| 361 | } |
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| 362 | |
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| 363 | static void amd8111e_enable_interrupt(struct amd8111e_priv *lp) |
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| 364 | { |
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| 365 | void *mmio = lp->mmio; |
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| 366 | |
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| 367 | writel(VAL3 | LCINTEN | VAL1 | TINTEN0 | VAL0 | RINTEN0, mmio + INTEN0); |
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| 368 | writel(VAL0 | INTREN, mmio + CMD0); |
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| 369 | readl(mmio + CMD0); |
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| 370 | } |
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| 371 | |
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| 372 | static void amd8111e_force_interrupt(struct amd8111e_priv *lp) |
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| 373 | { |
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| 374 | void *mmio = lp->mmio; |
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| 375 | |
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| 376 | writel(VAL0 | UINTCMD, mmio + CMD0); |
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| 377 | readl(mmio + CMD0); |
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| 378 | } |
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| 379 | |
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| 380 | static int amd8111e_get_mac_address(struct amd8111e_priv *lp) |
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| 381 | { |
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| 382 | struct nic *nic = lp->nic; |
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| 383 | void *mmio = lp->mmio; |
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| 384 | int i; |
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| 385 | |
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| 386 | /* BIOS should have set mac address to PADR register, |
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| 387 | * so we read PADR to get it. |
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| 388 | */ |
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| 389 | for (i = 0; i < ETH_ALEN; i++) |
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| 390 | nic->node_addr[i] = readb(mmio + PADR + i); |
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| 391 | |
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| 392 | DBG ( "Ethernet addr: %s\n", eth_ntoa ( nic->node_addr ) ); |
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| 393 | |
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| 394 | return 0; |
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| 395 | } |
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| 396 | |
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| 397 | static int amd8111e_init_rx_ring(struct amd8111e_priv *lp) |
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| 398 | { |
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| 399 | int i; |
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| 400 | |
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| 401 | lp->rx_idx = 0; |
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| 402 | |
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| 403 | /* Initilaizing receive descriptors */ |
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| 404 | for (i = 0; i < NUM_RX_SLOTS; i++) { |
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| 405 | lp->rx_ring[i].buf_phy_addr = cpu_to_le32(virt_to_bus(lp->rx_buf[i])); |
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| 406 | lp->rx_ring[i].buf_len = cpu_to_le16(RX_BUF_LEN); |
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| 407 | wmb(); |
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| 408 | lp->rx_ring[i].rx_flags = cpu_to_le16(OWN_BIT); |
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| 409 | } |
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| 410 | |
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| 411 | return 0; |
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| 412 | } |
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| 413 | |
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| 414 | static int amd8111e_init_tx_ring(struct amd8111e_priv *lp) |
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| 415 | { |
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| 416 | int i; |
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| 417 | |
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| 418 | lp->tx_idx = 0; |
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| 419 | lp->tx_consistent = 1; |
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| 420 | |
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| 421 | /* Initializing transmit descriptors */ |
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| 422 | for (i = 0; i < NUM_TX_SLOTS; i++) { |
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| 423 | lp->tx_ring[i].tx_flags = 0; |
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| 424 | lp->tx_ring[i].buf_phy_addr = 0; |
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| 425 | lp->tx_ring[i].buf_len = 0; |
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| 426 | } |
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| 427 | |
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| 428 | return 0; |
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| 429 | } |
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| 430 | |
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| 431 | static int amd8111e_wait_tx_ring(struct amd8111e_priv *lp, unsigned int index) |
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| 432 | { |
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| 433 | volatile u16 status; |
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| 434 | int retry = TX_RETRY; |
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| 435 | |
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| 436 | status = le16_to_cpu(lp->tx_ring[index].tx_flags); |
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| 437 | while (--retry && (status & OWN_BIT)) { |
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| 438 | mdelay(TX_PROCESS_TIME); |
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| 439 | status = le16_to_cpu(lp->tx_ring[index].tx_flags); |
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| 440 | } |
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| 441 | if (status & OWN_BIT) { |
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| 442 | printf("Error: tx slot %d timeout, stat = 0x%x\n", index, status); |
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| 443 | amd8111e_restart(lp); |
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| 444 | return -1; |
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| 445 | } |
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| 446 | |
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| 447 | return 0; |
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| 448 | } |
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| 449 | |
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| 450 | static void amd8111e_wait_link(struct amd8111e_priv *lp) |
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| 451 | { |
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| 452 | unsigned int status; |
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| 453 | u32 reg_val; |
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| 454 | |
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| 455 | do { |
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| 456 | /* read phy to update STAT0 register */ |
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| 457 | amd8111e_read_phy(lp, lp->ext_phy_addr, MII_BMCR, ®_val); |
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| 458 | amd8111e_read_phy(lp, lp->ext_phy_addr, MII_BMSR, ®_val); |
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| 459 | amd8111e_read_phy(lp, lp->ext_phy_addr, MII_ADVERTISE, ®_val); |
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| 460 | amd8111e_read_phy(lp, lp->ext_phy_addr, MII_LPA, ®_val); |
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| 461 | status = readl(lp->mmio + STAT0); |
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| 462 | } while (!(status & AUTONEG_COMPLETE) || !(status & LINK_STATS)); |
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| 463 | } |
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| 464 | |
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| 465 | static void amd8111e_poll_link(struct amd8111e_priv *lp) |
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| 466 | { |
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| 467 | unsigned int status, speed; |
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| 468 | u32 reg_val; |
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| 469 | |
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| 470 | if (!lp->link) { |
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| 471 | /* read phy to update STAT0 register */ |
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| 472 | amd8111e_read_phy(lp, lp->ext_phy_addr, MII_BMCR, ®_val); |
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| 473 | amd8111e_read_phy(lp, lp->ext_phy_addr, MII_BMSR, ®_val); |
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| 474 | amd8111e_read_phy(lp, lp->ext_phy_addr, MII_ADVERTISE, ®_val); |
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| 475 | amd8111e_read_phy(lp, lp->ext_phy_addr, MII_LPA, ®_val); |
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| 476 | status = readl(lp->mmio + STAT0); |
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| 477 | |
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| 478 | if (status & LINK_STATS) { |
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| 479 | lp->link = 1; |
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| 480 | speed = (status & SPEED_MASK) >> 7; |
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| 481 | if (speed == PHY_SPEED_100) |
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| 482 | lp->speed = 1; |
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| 483 | else |
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| 484 | lp->speed = 0; |
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| 485 | if (status & FULL_DPLX) |
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| 486 | lp->duplex = 1; |
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| 487 | else |
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| 488 | lp->duplex = 0; |
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| 489 | |
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| 490 | printf("Link is up: %s Mbps %s duplex\n", |
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| 491 | lp->speed ? "100" : "10", lp->duplex ? "full" : "half"); |
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| 492 | } |
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| 493 | } else { |
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| 494 | status = readl(lp->mmio + STAT0); |
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| 495 | if (!(status & LINK_STATS)) { |
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| 496 | lp->link = 0; |
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| 497 | printf("Link is down\n"); |
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| 498 | } |
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| 499 | } |
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| 500 | } |
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| 501 | |
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| 502 | static void amd8111e_restart(struct amd8111e_priv *lp) |
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| 503 | { |
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| 504 | printf("\nStarting nic...\n"); |
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| 505 | amd8111e_disable_interrupt(lp); |
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| 506 | amd8111e_init_hw_default(lp); |
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| 507 | amd8111e_probe_ext_phy(lp); |
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| 508 | amd8111e_get_mac_address(lp); |
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| 509 | amd8111e_start(lp); |
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| 510 | |
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| 511 | printf("Waiting link up...\n"); |
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| 512 | lp->link = 0; |
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| 513 | amd8111e_wait_link(lp); |
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| 514 | amd8111e_poll_link(lp); |
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| 515 | } |
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| 516 | |
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| 517 | |
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| 518 | /******************************************************** |
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| 519 | * Interface Functions * |
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| 520 | ********************************************************/ |
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| 521 | |
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| 522 | static void amd8111e_transmit(struct nic *nic, const char *dst_addr, |
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| 523 | unsigned int type, unsigned int size, const char *packet) |
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| 524 | { |
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| 525 | struct amd8111e_priv *lp = nic->priv_data; |
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| 526 | struct eth_frame *frame; |
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| 527 | unsigned int index; |
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| 528 | |
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| 529 | /* check packet size */ |
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| 530 | if (size > TX_PKT_LEN_MAX) { |
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| 531 | printf("amd8111e_transmit(): too large packet, drop\n"); |
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| 532 | return; |
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| 533 | } |
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| 534 | |
---|
| 535 | /* get tx slot */ |
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| 536 | index = lp->tx_idx; |
---|
| 537 | if (amd8111e_wait_tx_ring(lp, index)) |
---|
| 538 | return; |
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| 539 | |
---|
| 540 | /* fill frame */ |
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| 541 | frame = (struct eth_frame *)lp->tx_buf[index]; |
---|
| 542 | memset(frame->data, 0, TX_PKT_LEN_MAX); |
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| 543 | memcpy(frame->dst_addr, dst_addr, ETH_ALEN); |
---|
| 544 | memcpy(frame->src_addr, nic->node_addr, ETH_ALEN); |
---|
| 545 | frame->type = htons(type); |
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| 546 | memcpy(frame->data, packet, size); |
---|
| 547 | |
---|
| 548 | /* start xmit */ |
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| 549 | lp->tx_ring[index].buf_len = cpu_to_le16(ETH_HLEN + size); |
---|
| 550 | lp->tx_ring[index].buf_phy_addr = cpu_to_le32(virt_to_bus(frame)); |
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| 551 | wmb(); |
---|
| 552 | lp->tx_ring[index].tx_flags = |
---|
| 553 | cpu_to_le16(OWN_BIT | STP_BIT | ENP_BIT | ADD_FCS_BIT | LTINT_BIT); |
---|
| 554 | writel(VAL1 | TDMD0, lp->mmio + CMD0); |
---|
| 555 | readl(lp->mmio + CMD0); |
---|
| 556 | |
---|
| 557 | /* update slot pointer */ |
---|
| 558 | lp->tx_idx = (lp->tx_idx + 1) & TX_SLOTS_MASK; |
---|
| 559 | } |
---|
| 560 | |
---|
| 561 | static int amd8111e_poll(struct nic *nic, int retrieve) |
---|
| 562 | { |
---|
| 563 | /* return true if there's an ethernet packet ready to read */ |
---|
| 564 | /* nic->packet should contain data on return */ |
---|
| 565 | /* nic->packetlen should contain length of data */ |
---|
| 566 | |
---|
| 567 | struct amd8111e_priv *lp = nic->priv_data; |
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| 568 | u16 status, pkt_len; |
---|
| 569 | unsigned int index, pkt_ok; |
---|
| 570 | |
---|
| 571 | amd8111e_poll_link(lp); |
---|
| 572 | |
---|
| 573 | index = lp->rx_idx; |
---|
| 574 | status = le16_to_cpu(lp->rx_ring[index].rx_flags); |
---|
| 575 | pkt_len = le16_to_cpu(lp->rx_ring[index].msg_len) - 4; /* remove 4bytes FCS */ |
---|
| 576 | |
---|
| 577 | if (status & OWN_BIT) |
---|
| 578 | return 0; |
---|
| 579 | |
---|
| 580 | if (status & ERR_BIT) |
---|
| 581 | pkt_ok = 0; |
---|
| 582 | else if (!(status & STP_BIT)) |
---|
| 583 | pkt_ok = 0; |
---|
| 584 | else if (!(status & ENP_BIT)) |
---|
| 585 | pkt_ok = 0; |
---|
| 586 | else if (pkt_len < RX_PKT_LEN_MIN) |
---|
| 587 | pkt_ok = 0; |
---|
| 588 | else if (pkt_len > RX_PKT_LEN_MAX) |
---|
| 589 | pkt_ok = 0; |
---|
| 590 | else |
---|
| 591 | pkt_ok = 1; |
---|
| 592 | |
---|
| 593 | if (pkt_ok) { |
---|
| 594 | if (!retrieve) |
---|
| 595 | return 1; |
---|
| 596 | nic->packetlen = pkt_len; |
---|
| 597 | memcpy(nic->packet, lp->rx_buf[index], nic->packetlen); |
---|
| 598 | } |
---|
| 599 | |
---|
| 600 | lp->rx_ring[index].buf_phy_addr = cpu_to_le32(virt_to_bus(lp->rx_buf[index])); |
---|
| 601 | lp->rx_ring[index].buf_len = cpu_to_le16(RX_BUF_LEN); |
---|
| 602 | wmb(); |
---|
| 603 | lp->rx_ring[index].rx_flags = cpu_to_le16(OWN_BIT); |
---|
| 604 | writel(VAL2 | RDMD0, lp->mmio + CMD0); |
---|
| 605 | readl(lp->mmio + CMD0); |
---|
| 606 | |
---|
| 607 | lp->rx_idx = (lp->rx_idx + 1) & RX_SLOTS_MASK; |
---|
| 608 | return pkt_ok; |
---|
| 609 | } |
---|
| 610 | |
---|
| 611 | static void amd8111e_disable(struct nic *nic) |
---|
| 612 | { |
---|
| 613 | struct amd8111e_priv *lp = nic->priv_data; |
---|
| 614 | |
---|
| 615 | /* disable interrupt */ |
---|
| 616 | amd8111e_disable_interrupt(lp); |
---|
| 617 | |
---|
| 618 | /* stop chip */ |
---|
| 619 | amd8111e_init_hw_default(lp); |
---|
| 620 | |
---|
| 621 | /* unmap mmio */ |
---|
| 622 | iounmap(lp->mmio); |
---|
| 623 | |
---|
| 624 | /* update status */ |
---|
| 625 | lp->opened = 0; |
---|
| 626 | } |
---|
| 627 | |
---|
| 628 | static void amd8111e_irq(struct nic *nic, irq_action_t action) |
---|
| 629 | { |
---|
| 630 | struct amd8111e_priv *lp = nic->priv_data; |
---|
| 631 | |
---|
| 632 | switch (action) { |
---|
| 633 | case DISABLE: |
---|
| 634 | amd8111e_disable_interrupt(lp); |
---|
| 635 | break; |
---|
| 636 | case ENABLE: |
---|
| 637 | amd8111e_enable_interrupt(lp); |
---|
| 638 | break; |
---|
| 639 | case FORCE: |
---|
| 640 | amd8111e_force_interrupt(lp); |
---|
| 641 | break; |
---|
| 642 | } |
---|
| 643 | } |
---|
| 644 | |
---|
| 645 | static struct nic_operations amd8111e_operations = { |
---|
| 646 | .connect = dummy_connect, |
---|
| 647 | .poll = amd8111e_poll, |
---|
| 648 | .transmit = amd8111e_transmit, |
---|
| 649 | .irq = amd8111e_irq, |
---|
| 650 | }; |
---|
| 651 | |
---|
| 652 | static int amd8111e_probe(struct nic *nic, struct pci_device *pdev) |
---|
| 653 | { |
---|
| 654 | struct amd8111e_priv *lp = &amd8111e; |
---|
| 655 | unsigned long mmio_start, mmio_len; |
---|
| 656 | |
---|
| 657 | nic->ioaddr = pdev->ioaddr; |
---|
| 658 | nic->irqno = pdev->irq; |
---|
| 659 | |
---|
| 660 | mmio_start = pci_bar_start(pdev, PCI_BASE_ADDRESS_0); |
---|
| 661 | mmio_len = pci_bar_size(pdev, PCI_BASE_ADDRESS_0); |
---|
| 662 | |
---|
| 663 | memset(lp, 0, sizeof(*lp)); |
---|
| 664 | lp->pdev = pdev; |
---|
| 665 | lp->nic = nic; |
---|
| 666 | lp->mmio = ioremap(mmio_start, mmio_len); |
---|
| 667 | lp->opened = 1; |
---|
| 668 | adjust_pci_device(pdev); |
---|
| 669 | |
---|
| 670 | nic->priv_data = lp; |
---|
| 671 | |
---|
| 672 | amd8111e_restart(lp); |
---|
| 673 | |
---|
| 674 | nic->nic_op = &amd8111e_operations; |
---|
| 675 | return 1; |
---|
| 676 | } |
---|
| 677 | |
---|
| 678 | static struct pci_device_id amd8111e_nics[] = { |
---|
| 679 | PCI_ROM(0x1022, 0x7462, "amd8111e", "AMD8111E", 0), |
---|
| 680 | }; |
---|
| 681 | |
---|
| 682 | PCI_DRIVER ( amd8111e_driver, amd8111e_nics, PCI_NO_CLASS ); |
---|
| 683 | |
---|
| 684 | DRIVER ( "AMD8111E", nic_driver, pci_driver, amd8111e_driver, |
---|
| 685 | amd8111e_probe, amd8111e_disable ); |
---|
| 686 | |
---|
| 687 | /* |
---|
| 688 | * Local variables: |
---|
| 689 | * c-basic-offset: 8 |
---|
| 690 | * c-indent-level: 8 |
---|
| 691 | * tab-width: 8 |
---|
| 692 | * End: |
---|
| 693 | */ |
---|