Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Amiga Linux/68k A2065 Ethernet Driver |
| 3 | * |
| 4 | * (C) Copyright 1995-2003 by Geert Uytterhoeven <geert@linux-m68k.org> |
| 5 | * |
| 6 | * Fixes and tips by: |
| 7 | * - Janos Farkas (CHEXUM@sparta.banki.hu) |
| 8 | * - Jes Degn Soerensen (jds@kom.auc.dk) |
| 9 | * - Matt Domsch (Matt_Domsch@dell.com) |
| 10 | * |
| 11 | * ---------------------------------------------------------------------------- |
| 12 | * |
| 13 | * This program is based on |
| 14 | * |
| 15 | * ariadne.?: Amiga Linux/68k Ariadne Ethernet Driver |
| 16 | * (C) Copyright 1995 by Geert Uytterhoeven, |
| 17 | * Peter De Schrijver |
| 18 | * |
| 19 | * lance.c: An AMD LANCE ethernet driver for linux. |
| 20 | * Written 1993-94 by Donald Becker. |
| 21 | * |
| 22 | * Am79C960: PCnet(tm)-ISA Single-Chip Ethernet Controller |
| 23 | * Advanced Micro Devices |
| 24 | * Publication #16907, Rev. B, Amendment/0, May 1994 |
| 25 | * |
| 26 | * ---------------------------------------------------------------------------- |
| 27 | * |
| 28 | * This file is subject to the terms and conditions of the GNU General Public |
| 29 | * License. See the file COPYING in the main directory of the Linux |
| 30 | * distribution for more details. |
| 31 | * |
| 32 | * ---------------------------------------------------------------------------- |
| 33 | * |
| 34 | * The A2065 is a Zorro-II board made by Commodore/Ameristar. It contains: |
| 35 | * |
| 36 | * - an Am7990 Local Area Network Controller for Ethernet (LANCE) with |
| 37 | * both 10BASE-2 (thin coax) and AUI (DB-15) connectors |
| 38 | */ |
| 39 | |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 40 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| 41 | |
| 42 | /*#define DEBUG*/ |
| 43 | /*#define TEST_HITS*/ |
| 44 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | #include <linux/errno.h> |
| 46 | #include <linux/netdevice.h> |
| 47 | #include <linux/etherdevice.h> |
| 48 | #include <linux/module.h> |
| 49 | #include <linux/stddef.h> |
| 50 | #include <linux/kernel.h> |
| 51 | #include <linux/interrupt.h> |
| 52 | #include <linux/ioport.h> |
| 53 | #include <linux/skbuff.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | #include <linux/string.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | #include <linux/init.h> |
| 56 | #include <linux/crc32.h> |
| 57 | #include <linux/zorro.h> |
| 58 | #include <linux/bitops.h> |
| 59 | |
| 60 | #include <asm/irq.h> |
| 61 | #include <asm/amigaints.h> |
| 62 | #include <asm/amigahw.h> |
| 63 | |
| 64 | #include "a2065.h" |
| 65 | |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 66 | /* Transmit/Receive Ring Definitions */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | |
| 68 | #define LANCE_LOG_TX_BUFFERS (2) |
| 69 | #define LANCE_LOG_RX_BUFFERS (4) |
| 70 | |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 71 | #define TX_RING_SIZE (1 << LANCE_LOG_TX_BUFFERS) |
| 72 | #define RX_RING_SIZE (1 << LANCE_LOG_RX_BUFFERS) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 74 | #define TX_RING_MOD_MASK (TX_RING_SIZE - 1) |
| 75 | #define RX_RING_MOD_MASK (RX_RING_SIZE - 1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | |
| 77 | #define PKT_BUF_SIZE (1544) |
| 78 | #define RX_BUFF_SIZE PKT_BUF_SIZE |
| 79 | #define TX_BUFF_SIZE PKT_BUF_SIZE |
| 80 | |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 81 | /* Layout of the Lance's RAM Buffer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | |
| 83 | struct lance_init_block { |
| 84 | unsigned short mode; /* Pre-set mode (reg. 15) */ |
| 85 | unsigned char phys_addr[6]; /* Physical ethernet address */ |
| 86 | unsigned filter[2]; /* Multicast filter. */ |
| 87 | |
| 88 | /* Receive and transmit ring base, along with extra bits. */ |
| 89 | unsigned short rx_ptr; /* receive descriptor addr */ |
| 90 | unsigned short rx_len; /* receive len and high addr */ |
| 91 | unsigned short tx_ptr; /* transmit descriptor addr */ |
| 92 | unsigned short tx_len; /* transmit len and high addr */ |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 93 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | /* The Tx and Rx ring entries must aligned on 8-byte boundaries. */ |
| 95 | struct lance_rx_desc brx_ring[RX_RING_SIZE]; |
| 96 | struct lance_tx_desc btx_ring[TX_RING_SIZE]; |
| 97 | |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 98 | char rx_buf[RX_RING_SIZE][RX_BUFF_SIZE]; |
| 99 | char tx_buf[TX_RING_SIZE][TX_BUFF_SIZE]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | }; |
| 101 | |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 102 | /* Private Device Data */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | |
| 104 | struct lance_private { |
| 105 | char *name; |
| 106 | volatile struct lance_regs *ll; |
| 107 | volatile struct lance_init_block *init_block; /* Hosts view */ |
| 108 | volatile struct lance_init_block *lance_init_block; /* Lance view */ |
| 109 | |
| 110 | int rx_new, tx_new; |
| 111 | int rx_old, tx_old; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 112 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | int lance_log_rx_bufs, lance_log_tx_bufs; |
| 114 | int rx_ring_mod_mask, tx_ring_mod_mask; |
| 115 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | int tpe; /* cable-selection is TPE */ |
| 117 | int auto_select; /* cable-selection by carrier */ |
| 118 | unsigned short busmaster_regval; |
| 119 | |
| 120 | #ifdef CONFIG_SUNLANCE |
| 121 | struct Linux_SBus_DMA *ledma; /* if set this points to ledma and arch=4m */ |
| 122 | int burst_sizes; /* ledma SBus burst sizes */ |
| 123 | #endif |
| 124 | struct timer_list multicast_timer; |
| 125 | }; |
| 126 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | #define LANCE_ADDR(x) ((int)(x) & ~0xff000000) |
| 128 | |
| 129 | /* Load the CSR registers */ |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 130 | static void load_csrs(struct lance_private *lp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | { |
| 132 | volatile struct lance_regs *ll = lp->ll; |
| 133 | volatile struct lance_init_block *aib = lp->lance_init_block; |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 134 | int leptr = LANCE_ADDR(aib); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | |
| 136 | ll->rap = LE_CSR1; |
| 137 | ll->rdp = (leptr & 0xFFFF); |
| 138 | ll->rap = LE_CSR2; |
| 139 | ll->rdp = leptr >> 16; |
| 140 | ll->rap = LE_CSR3; |
| 141 | ll->rdp = lp->busmaster_regval; |
| 142 | |
| 143 | /* Point back to csr0 */ |
| 144 | ll->rap = LE_CSR0; |
| 145 | } |
| 146 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 147 | /* Setup the Lance Rx and Tx rings */ |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 148 | static void lance_init_ring(struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | { |
| 150 | struct lance_private *lp = netdev_priv(dev); |
| 151 | volatile struct lance_init_block *ib = lp->init_block; |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 152 | volatile struct lance_init_block *aib = lp->lance_init_block; |
| 153 | /* for LANCE_ADDR computations */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | int leptr; |
| 155 | int i; |
| 156 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | /* Lock out other processes while setting up hardware */ |
| 158 | netif_stop_queue(dev); |
| 159 | lp->rx_new = lp->tx_new = 0; |
| 160 | lp->rx_old = lp->tx_old = 0; |
| 161 | |
| 162 | ib->mode = 0; |
| 163 | |
| 164 | /* Copy the ethernet address to the lance init block |
| 165 | * Note that on the sparc you need to swap the ethernet address. |
| 166 | */ |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 167 | ib->phys_addr[0] = dev->dev_addr[1]; |
| 168 | ib->phys_addr[1] = dev->dev_addr[0]; |
| 169 | ib->phys_addr[2] = dev->dev_addr[3]; |
| 170 | ib->phys_addr[3] = dev->dev_addr[2]; |
| 171 | ib->phys_addr[4] = dev->dev_addr[5]; |
| 172 | ib->phys_addr[5] = dev->dev_addr[4]; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 173 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | /* Setup the Tx ring entries */ |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 175 | netdev_dbg(dev, "TX rings:\n"); |
| 176 | for (i = 0; i <= 1 << lp->lance_log_tx_bufs; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | leptr = LANCE_ADDR(&aib->tx_buf[i][0]); |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 178 | ib->btx_ring[i].tmd0 = leptr; |
| 179 | ib->btx_ring[i].tmd1_hadr = leptr >> 16; |
| 180 | ib->btx_ring[i].tmd1_bits = 0; |
| 181 | ib->btx_ring[i].length = 0xf000; /* The ones required by tmd2 */ |
| 182 | ib->btx_ring[i].misc = 0; |
| 183 | if (i < 3) |
| 184 | netdev_dbg(dev, "%d: 0x%08x\n", i, leptr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | } |
| 186 | |
| 187 | /* Setup the Rx ring entries */ |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 188 | netdev_dbg(dev, "RX rings:\n"); |
| 189 | for (i = 0; i < 1 << lp->lance_log_rx_bufs; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | leptr = LANCE_ADDR(&aib->rx_buf[i][0]); |
| 191 | |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 192 | ib->brx_ring[i].rmd0 = leptr; |
| 193 | ib->brx_ring[i].rmd1_hadr = leptr >> 16; |
| 194 | ib->brx_ring[i].rmd1_bits = LE_R1_OWN; |
| 195 | ib->brx_ring[i].length = -RX_BUFF_SIZE | 0xf000; |
| 196 | ib->brx_ring[i].mblength = 0; |
| 197 | if (i < 3) |
| 198 | netdev_dbg(dev, "%d: 0x%08x\n", i, leptr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | } |
| 200 | |
| 201 | /* Setup the initialization block */ |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 202 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 203 | /* Setup rx descriptor pointer */ |
| 204 | leptr = LANCE_ADDR(&aib->brx_ring); |
| 205 | ib->rx_len = (lp->lance_log_rx_bufs << 13) | (leptr >> 16); |
| 206 | ib->rx_ptr = leptr; |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 207 | netdev_dbg(dev, "RX ptr: %08x\n", leptr); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 208 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | /* Setup tx descriptor pointer */ |
| 210 | leptr = LANCE_ADDR(&aib->btx_ring); |
| 211 | ib->tx_len = (lp->lance_log_tx_bufs << 13) | (leptr >> 16); |
| 212 | ib->tx_ptr = leptr; |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 213 | netdev_dbg(dev, "TX ptr: %08x\n", leptr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | |
| 215 | /* Clear the multicast filter */ |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 216 | ib->filter[0] = 0; |
| 217 | ib->filter[1] = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | } |
| 219 | |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 220 | static int init_restart_lance(struct lance_private *lp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | { |
| 222 | volatile struct lance_regs *ll = lp->ll; |
| 223 | int i; |
| 224 | |
| 225 | ll->rap = LE_CSR0; |
| 226 | ll->rdp = LE_C0_INIT; |
| 227 | |
| 228 | /* Wait for the lance to complete initialization */ |
| 229 | for (i = 0; (i < 100) && !(ll->rdp & (LE_C0_ERR | LE_C0_IDON)); i++) |
| 230 | barrier(); |
| 231 | if ((i == 100) || (ll->rdp & LE_C0_ERR)) { |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 232 | pr_err("unopened after %d ticks, csr0=%04x\n", i, ll->rdp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | return -EIO; |
| 234 | } |
| 235 | |
| 236 | /* Clear IDON by writing a "1", enable interrupts and start lance */ |
| 237 | ll->rdp = LE_C0_IDON; |
| 238 | ll->rdp = LE_C0_INEA | LE_C0_STRT; |
| 239 | |
| 240 | return 0; |
| 241 | } |
| 242 | |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 243 | static int lance_rx(struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | { |
| 245 | struct lance_private *lp = netdev_priv(dev); |
| 246 | volatile struct lance_init_block *ib = lp->init_block; |
| 247 | volatile struct lance_regs *ll = lp->ll; |
| 248 | volatile struct lance_rx_desc *rd; |
| 249 | unsigned char bits; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | |
| 251 | #ifdef TEST_HITS |
| 252 | int i; |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 253 | char buf[RX_RING_SIZE + 1]; |
| 254 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | for (i = 0; i < RX_RING_SIZE; i++) { |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 256 | char r1_own = ib->brx_ring[i].rmd1_bits & LE_R1_OWN; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | if (i == lp->rx_new) |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 258 | buf[i] = r1_own ? '_' : 'X'; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | else |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 260 | buf[i] = r1_own ? '.' : '1'; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | } |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 262 | buf[RX_RING_SIZE] = 0; |
| 263 | |
| 264 | pr_debug("RxRing TestHits: [%s]\n", buf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | #endif |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 266 | |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 267 | ll->rdp = LE_C0_RINT | LE_C0_INEA; |
| 268 | for (rd = &ib->brx_ring[lp->rx_new]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | !((bits = rd->rmd1_bits) & LE_R1_OWN); |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 270 | rd = &ib->brx_ring[lp->rx_new]) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | |
| 272 | /* We got an incomplete frame? */ |
| 273 | if ((bits & LE_R1_POK) != LE_R1_POK) { |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 274 | dev->stats.rx_over_errors++; |
| 275 | dev->stats.rx_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 276 | continue; |
| 277 | } else if (bits & LE_R1_ERR) { |
| 278 | /* Count only the end frame as a rx error, |
| 279 | * not the beginning |
| 280 | */ |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 281 | if (bits & LE_R1_BUF) |
| 282 | dev->stats.rx_fifo_errors++; |
| 283 | if (bits & LE_R1_CRC) |
| 284 | dev->stats.rx_crc_errors++; |
| 285 | if (bits & LE_R1_OFL) |
| 286 | dev->stats.rx_over_errors++; |
| 287 | if (bits & LE_R1_FRA) |
| 288 | dev->stats.rx_frame_errors++; |
| 289 | if (bits & LE_R1_EOP) |
| 290 | dev->stats.rx_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | } else { |
Al Viro | 79ea13c | 2008-01-24 02:06:46 -0800 | [diff] [blame] | 292 | int len = (rd->mblength & 0xfff) - 4; |
Pradeep A Dalvi | 1d26643 | 2012-02-05 02:49:09 +0000 | [diff] [blame] | 293 | struct sk_buff *skb = netdev_alloc_skb(dev, len + 2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 294 | |
Al Viro | 79ea13c | 2008-01-24 02:06:46 -0800 | [diff] [blame] | 295 | if (!skb) { |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 296 | dev->stats.rx_dropped++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | rd->mblength = 0; |
| 298 | rd->rmd1_bits = LE_R1_OWN; |
| 299 | lp->rx_new = (lp->rx_new + 1) & lp->rx_ring_mod_mask; |
| 300 | return 0; |
| 301 | } |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 302 | |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 303 | skb_reserve(skb, 2); /* 16 byte align */ |
| 304 | skb_put(skb, len); /* make room */ |
David S. Miller | 8c7b7fa | 2007-07-10 22:08:12 -0700 | [diff] [blame] | 305 | skb_copy_to_linear_data(skb, |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 306 | (unsigned char *)&ib->rx_buf[lp->rx_new][0], |
| 307 | len); |
| 308 | skb->protocol = eth_type_trans(skb, dev); |
| 309 | netif_rx(skb); |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 310 | dev->stats.rx_packets++; |
| 311 | dev->stats.rx_bytes += len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | } |
| 313 | |
| 314 | /* Return the packet to the pool */ |
| 315 | rd->mblength = 0; |
| 316 | rd->rmd1_bits = LE_R1_OWN; |
| 317 | lp->rx_new = (lp->rx_new + 1) & lp->rx_ring_mod_mask; |
| 318 | } |
| 319 | return 0; |
| 320 | } |
| 321 | |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 322 | static int lance_tx(struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | { |
| 324 | struct lance_private *lp = netdev_priv(dev); |
| 325 | volatile struct lance_init_block *ib = lp->init_block; |
| 326 | volatile struct lance_regs *ll = lp->ll; |
| 327 | volatile struct lance_tx_desc *td; |
| 328 | int i, j; |
| 329 | int status; |
| 330 | |
| 331 | /* csr0 is 2f3 */ |
| 332 | ll->rdp = LE_C0_TINT | LE_C0_INEA; |
| 333 | /* csr0 is 73 */ |
| 334 | |
| 335 | j = lp->tx_old; |
| 336 | for (i = j; i != lp->tx_new; i = j) { |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 337 | td = &ib->btx_ring[i]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | |
| 339 | /* If we hit a packet not owned by us, stop */ |
| 340 | if (td->tmd1_bits & LE_T1_OWN) |
| 341 | break; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 342 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | if (td->tmd1_bits & LE_T1_ERR) { |
| 344 | status = td->misc; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 345 | |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 346 | dev->stats.tx_errors++; |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 347 | if (status & LE_T3_RTY) |
| 348 | dev->stats.tx_aborted_errors++; |
| 349 | if (status & LE_T3_LCOL) |
| 350 | dev->stats.tx_window_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | |
| 352 | if (status & LE_T3_CLOS) { |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 353 | dev->stats.tx_carrier_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 354 | if (lp->auto_select) { |
| 355 | lp->tpe = 1 - lp->tpe; |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 356 | netdev_err(dev, "Carrier Lost, trying %s\n", |
| 357 | lp->tpe ? "TPE" : "AUI"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | /* Stop the lance */ |
| 359 | ll->rap = LE_CSR0; |
| 360 | ll->rdp = LE_C0_STOP; |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 361 | lance_init_ring(dev); |
| 362 | load_csrs(lp); |
| 363 | init_restart_lance(lp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | return 0; |
| 365 | } |
| 366 | } |
| 367 | |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 368 | /* buffer errors and underflows turn off |
| 369 | * the transmitter, so restart the adapter |
| 370 | */ |
| 371 | if (status & (LE_T3_BUF | LE_T3_UFL)) { |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 372 | dev->stats.tx_fifo_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 373 | |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 374 | netdev_err(dev, "Tx: ERR_BUF|ERR_UFL, restarting\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 375 | /* Stop the lance */ |
| 376 | ll->rap = LE_CSR0; |
| 377 | ll->rdp = LE_C0_STOP; |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 378 | lance_init_ring(dev); |
| 379 | load_csrs(lp); |
| 380 | init_restart_lance(lp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | return 0; |
| 382 | } |
| 383 | } else if ((td->tmd1_bits & LE_T1_POK) == LE_T1_POK) { |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 384 | /* So we don't count the packet more than once. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | td->tmd1_bits &= ~(LE_T1_POK); |
| 386 | |
| 387 | /* One collision before packet was sent. */ |
| 388 | if (td->tmd1_bits & LE_T1_EONE) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 389 | dev->stats.collisions++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | |
| 391 | /* More than one collision, be optimistic. */ |
| 392 | if (td->tmd1_bits & LE_T1_EMORE) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 393 | dev->stats.collisions += 2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 394 | |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 395 | dev->stats.tx_packets++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | } |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 397 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | j = (j + 1) & lp->tx_ring_mod_mask; |
| 399 | } |
| 400 | lp->tx_old = j; |
| 401 | ll->rdp = LE_C0_TINT | LE_C0_INEA; |
| 402 | return 0; |
| 403 | } |
| 404 | |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 405 | static int lance_tx_buffs_avail(struct lance_private *lp) |
| 406 | { |
| 407 | if (lp->tx_old <= lp->tx_new) |
| 408 | return lp->tx_old + lp->tx_ring_mod_mask - lp->tx_new; |
| 409 | return lp->tx_old - lp->tx_new - 1; |
| 410 | } |
| 411 | |
| 412 | static irqreturn_t lance_interrupt(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 413 | { |
Joe Perches | 43d620c | 2011-06-16 19:08:06 +0000 | [diff] [blame] | 414 | struct net_device *dev = dev_id; |
| 415 | struct lance_private *lp = netdev_priv(dev); |
| 416 | volatile struct lance_regs *ll = lp->ll; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | int csr0; |
| 418 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | ll->rap = LE_CSR0; /* LANCE Controller Status */ |
| 420 | csr0 = ll->rdp; |
| 421 | |
| 422 | if (!(csr0 & LE_C0_INTR)) /* Check if any interrupt has */ |
| 423 | return IRQ_NONE; /* been generated by the Lance. */ |
| 424 | |
| 425 | /* Acknowledge all the interrupt sources ASAP */ |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 426 | ll->rdp = csr0 & ~(LE_C0_INEA | LE_C0_TDMD | LE_C0_STOP | LE_C0_STRT | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | LE_C0_INIT); |
| 428 | |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 429 | if (csr0 & LE_C0_ERR) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | /* Clear the error condition */ |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 431 | ll->rdp = LE_C0_BABL | LE_C0_ERR | LE_C0_MISS | LE_C0_INEA; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 432 | } |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 433 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | if (csr0 & LE_C0_RINT) |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 435 | lance_rx(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 436 | |
| 437 | if (csr0 & LE_C0_TINT) |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 438 | lance_tx(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | |
| 440 | /* Log misc errors. */ |
| 441 | if (csr0 & LE_C0_BABL) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 442 | dev->stats.tx_errors++; /* Tx babble. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | if (csr0 & LE_C0_MISS) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 444 | dev->stats.rx_errors++; /* Missed a Rx frame. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | if (csr0 & LE_C0_MERR) { |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 446 | netdev_err(dev, "Bus master arbitration failure, status %04x\n", |
| 447 | csr0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | /* Restart the chip. */ |
| 449 | ll->rdp = LE_C0_STRT; |
| 450 | } |
| 451 | |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 452 | if (netif_queue_stopped(dev) && lance_tx_buffs_avail(lp) > 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 453 | netif_wake_queue(dev); |
| 454 | |
| 455 | ll->rap = LE_CSR0; |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 456 | ll->rdp = (LE_C0_BABL | LE_C0_CERR | LE_C0_MISS | LE_C0_MERR | |
| 457 | LE_C0_IDON | LE_C0_INEA); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | return IRQ_HANDLED; |
| 459 | } |
| 460 | |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 461 | static int lance_open(struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | { |
| 463 | struct lance_private *lp = netdev_priv(dev); |
| 464 | volatile struct lance_regs *ll = lp->ll; |
| 465 | int ret; |
| 466 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | /* Stop the Lance */ |
| 468 | ll->rap = LE_CSR0; |
| 469 | ll->rdp = LE_C0_STOP; |
| 470 | |
| 471 | /* Install the Interrupt handler */ |
Thomas Gleixner | 1fb9df5 | 2006-07-01 19:29:39 -0700 | [diff] [blame] | 472 | ret = request_irq(IRQ_AMIGA_PORTS, lance_interrupt, IRQF_SHARED, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 473 | dev->name, dev); |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 474 | if (ret) |
| 475 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 477 | load_csrs(lp); |
| 478 | lance_init_ring(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 479 | |
| 480 | netif_start_queue(dev); |
| 481 | |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 482 | return init_restart_lance(lp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | } |
| 484 | |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 485 | static int lance_close(struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 486 | { |
| 487 | struct lance_private *lp = netdev_priv(dev); |
| 488 | volatile struct lance_regs *ll = lp->ll; |
| 489 | |
| 490 | netif_stop_queue(dev); |
| 491 | del_timer_sync(&lp->multicast_timer); |
| 492 | |
| 493 | /* Stop the card */ |
| 494 | ll->rap = LE_CSR0; |
| 495 | ll->rdp = LE_C0_STOP; |
| 496 | |
| 497 | free_irq(IRQ_AMIGA_PORTS, dev); |
| 498 | return 0; |
| 499 | } |
| 500 | |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 501 | static inline int lance_reset(struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | { |
| 503 | struct lance_private *lp = netdev_priv(dev); |
| 504 | volatile struct lance_regs *ll = lp->ll; |
| 505 | int status; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 506 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 507 | /* Stop the lance */ |
| 508 | ll->rap = LE_CSR0; |
| 509 | ll->rdp = LE_C0_STOP; |
| 510 | |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 511 | load_csrs(lp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 512 | |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 513 | lance_init_ring(dev); |
Eric Dumazet | 1ae5dc3 | 2010-05-10 05:01:31 -0700 | [diff] [blame] | 514 | dev->trans_start = jiffies; /* prevent tx timeout */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 515 | netif_start_queue(dev); |
| 516 | |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 517 | status = init_restart_lance(lp); |
| 518 | netdev_dbg(dev, "Lance restart=%d\n", status); |
| 519 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 520 | return status; |
| 521 | } |
| 522 | |
| 523 | static void lance_tx_timeout(struct net_device *dev) |
| 524 | { |
| 525 | struct lance_private *lp = netdev_priv(dev); |
| 526 | volatile struct lance_regs *ll = lp->ll; |
| 527 | |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 528 | netdev_err(dev, "transmit timed out, status %04x, reset\n", ll->rdp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | lance_reset(dev); |
| 530 | netif_wake_queue(dev); |
| 531 | } |
| 532 | |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 533 | static netdev_tx_t lance_start_xmit(struct sk_buff *skb, |
| 534 | struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | { |
| 536 | struct lance_private *lp = netdev_priv(dev); |
| 537 | volatile struct lance_regs *ll = lp->ll; |
| 538 | volatile struct lance_init_block *ib = lp->init_block; |
Dave Jones | cedc1db | 2009-03-18 18:17:48 -0700 | [diff] [blame] | 539 | int entry, skblen; |
Patrick McHardy | ec634fe | 2009-07-05 19:23:38 -0700 | [diff] [blame] | 540 | int status = NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 541 | unsigned long flags; |
| 542 | |
Dave Jones | cedc1db | 2009-03-18 18:17:48 -0700 | [diff] [blame] | 543 | if (skb_padto(skb, ETH_ZLEN)) |
Patrick McHardy | ec634fe | 2009-07-05 19:23:38 -0700 | [diff] [blame] | 544 | return NETDEV_TX_OK; |
Dave Jones | cedc1db | 2009-03-18 18:17:48 -0700 | [diff] [blame] | 545 | skblen = max_t(unsigned, skb->len, ETH_ZLEN); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 546 | |
| 547 | local_irq_save(flags); |
| 548 | |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 549 | if (!lance_tx_buffs_avail(lp)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 550 | local_irq_restore(flags); |
Patrick McHardy | 5b54814 | 2009-06-12 06:22:29 +0000 | [diff] [blame] | 551 | return NETDEV_TX_LOCKED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 552 | } |
| 553 | |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 554 | #ifdef DEBUG |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 555 | /* dump the packet */ |
Joe Perches | ad361c9 | 2009-07-06 13:05:40 -0700 | [diff] [blame] | 556 | print_hex_dump(KERN_DEBUG, "skb->data: ", DUMP_PREFIX_NONE, |
| 557 | 16, 1, skb->data, 64, true); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | #endif |
| 559 | entry = lp->tx_new & lp->tx_ring_mod_mask; |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 560 | ib->btx_ring[entry].length = (-skblen) | 0xf000; |
| 561 | ib->btx_ring[entry].misc = 0; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 562 | |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 563 | skb_copy_from_linear_data(skb, (void *)&ib->tx_buf[entry][0], skblen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 565 | /* Now, give the packet to the lance */ |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 566 | ib->btx_ring[entry].tmd1_bits = (LE_T1_POK | LE_T1_OWN); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 567 | lp->tx_new = (lp->tx_new+1) & lp->tx_ring_mod_mask; |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 568 | dev->stats.tx_bytes += skblen; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 569 | |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 570 | if (lance_tx_buffs_avail(lp) <= 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | netif_stop_queue(dev); |
| 572 | |
| 573 | /* Kick the lance: transmit now */ |
| 574 | ll->rdp = LE_C0_INEA | LE_C0_TDMD; |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 575 | dev_kfree_skb(skb); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 576 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 577 | local_irq_restore(flags); |
| 578 | |
| 579 | return status; |
| 580 | } |
| 581 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 582 | /* taken from the depca driver */ |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 583 | static void lance_load_multicast(struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 584 | { |
| 585 | struct lance_private *lp = netdev_priv(dev); |
| 586 | volatile struct lance_init_block *ib = lp->init_block; |
| 587 | volatile u16 *mcast_table = (u16 *)&ib->filter; |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 588 | struct netdev_hw_addr *ha; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 589 | u32 crc; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 590 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 591 | /* set all multicast bits */ |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 592 | if (dev->flags & IFF_ALLMULTI) { |
| 593 | ib->filter[0] = 0xffffffff; |
| 594 | ib->filter[1] = 0xffffffff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 595 | return; |
| 596 | } |
| 597 | /* clear the multicast filter */ |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 598 | ib->filter[0] = 0; |
| 599 | ib->filter[1] = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | |
| 601 | /* Add addresses */ |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 602 | netdev_for_each_mc_addr(ha, dev) { |
Tobias Klauser | 498d8e2 | 2011-07-07 22:06:26 +0000 | [diff] [blame] | 603 | crc = ether_crc_le(6, ha->addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 604 | crc = crc >> 26; |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 605 | mcast_table[crc >> 4] |= 1 << (crc & 0xf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 606 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 607 | } |
| 608 | |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 609 | static void lance_set_multicast(struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 610 | { |
| 611 | struct lance_private *lp = netdev_priv(dev); |
| 612 | volatile struct lance_init_block *ib = lp->init_block; |
| 613 | volatile struct lance_regs *ll = lp->ll; |
| 614 | |
| 615 | if (!netif_running(dev)) |
| 616 | return; |
| 617 | |
| 618 | if (lp->tx_old != lp->tx_new) { |
| 619 | mod_timer(&lp->multicast_timer, jiffies + 4); |
| 620 | netif_wake_queue(dev); |
| 621 | return; |
| 622 | } |
| 623 | |
| 624 | netif_stop_queue(dev); |
| 625 | |
| 626 | ll->rap = LE_CSR0; |
| 627 | ll->rdp = LE_C0_STOP; |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 628 | lance_init_ring(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 629 | |
| 630 | if (dev->flags & IFF_PROMISC) { |
| 631 | ib->mode |= LE_MO_PROM; |
| 632 | } else { |
| 633 | ib->mode &= ~LE_MO_PROM; |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 634 | lance_load_multicast(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 635 | } |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 636 | load_csrs(lp); |
| 637 | init_restart_lance(lp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 638 | netif_wake_queue(dev); |
| 639 | } |
| 640 | |
Bill Pemberton | 0cb0568 | 2012-12-03 09:23:54 -0500 | [diff] [blame] | 641 | static int a2065_init_one(struct zorro_dev *z, |
Greg Kroah-Hartman | 1dd06ae | 2012-12-06 14:30:56 +0000 | [diff] [blame] | 642 | const struct zorro_device_id *ent); |
Bill Pemberton | 0cb0568 | 2012-12-03 09:23:54 -0500 | [diff] [blame] | 643 | static void a2065_remove_one(struct zorro_dev *z); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 644 | |
| 645 | |
Bill Pemberton | 0cb0568 | 2012-12-03 09:23:54 -0500 | [diff] [blame] | 646 | static struct zorro_device_id a2065_zorro_tbl[] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 647 | { ZORRO_PROD_CBM_A2065_1 }, |
| 648 | { ZORRO_PROD_CBM_A2065_2 }, |
| 649 | { ZORRO_PROD_AMERISTAR_A2065 }, |
| 650 | { 0 } |
| 651 | }; |
Geert Uytterhoeven | bf54a2b | 2008-11-18 21:13:53 +0100 | [diff] [blame] | 652 | MODULE_DEVICE_TABLE(zorro, a2065_zorro_tbl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 653 | |
| 654 | static struct zorro_driver a2065_driver = { |
| 655 | .name = "a2065", |
| 656 | .id_table = a2065_zorro_tbl, |
| 657 | .probe = a2065_init_one, |
Bill Pemberton | 0cb0568 | 2012-12-03 09:23:54 -0500 | [diff] [blame] | 658 | .remove = a2065_remove_one, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 659 | }; |
| 660 | |
Alexander Beregalov | 444f1a9 | 2009-04-14 18:30:21 +0000 | [diff] [blame] | 661 | static const struct net_device_ops lance_netdev_ops = { |
| 662 | .ndo_open = lance_open, |
| 663 | .ndo_stop = lance_close, |
| 664 | .ndo_start_xmit = lance_start_xmit, |
| 665 | .ndo_tx_timeout = lance_tx_timeout, |
Jiri Pirko | afc4b13 | 2011-08-16 06:29:01 +0000 | [diff] [blame] | 666 | .ndo_set_rx_mode = lance_set_multicast, |
Alexander Beregalov | 444f1a9 | 2009-04-14 18:30:21 +0000 | [diff] [blame] | 667 | .ndo_validate_addr = eth_validate_addr, |
| 668 | .ndo_change_mtu = eth_change_mtu, |
| 669 | .ndo_set_mac_address = eth_mac_addr, |
| 670 | }; |
| 671 | |
Bill Pemberton | 0cb0568 | 2012-12-03 09:23:54 -0500 | [diff] [blame] | 672 | static int a2065_init_one(struct zorro_dev *z, |
Greg Kroah-Hartman | 1dd06ae | 2012-12-06 14:30:56 +0000 | [diff] [blame] | 673 | const struct zorro_device_id *ent) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 674 | { |
| 675 | struct net_device *dev; |
| 676 | struct lance_private *priv; |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 677 | unsigned long board = z->resource.start; |
| 678 | unsigned long base_addr = board + A2065_LANCE; |
| 679 | unsigned long mem_start = board + A2065_RAM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 680 | struct resource *r1, *r2; |
| 681 | int err; |
| 682 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 683 | r1 = request_mem_region(base_addr, sizeof(struct lance_regs), |
| 684 | "Am7990"); |
| 685 | if (!r1) |
| 686 | return -EBUSY; |
| 687 | r2 = request_mem_region(mem_start, A2065_RAM_SIZE, "RAM"); |
| 688 | if (!r2) { |
Julia Lawall | e6937ee | 2011-03-22 07:15:23 +0000 | [diff] [blame] | 689 | release_mem_region(base_addr, sizeof(struct lance_regs)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 690 | return -EBUSY; |
| 691 | } |
| 692 | |
| 693 | dev = alloc_etherdev(sizeof(struct lance_private)); |
| 694 | if (dev == NULL) { |
Julia Lawall | e6937ee | 2011-03-22 07:15:23 +0000 | [diff] [blame] | 695 | release_mem_region(base_addr, sizeof(struct lance_regs)); |
| 696 | release_mem_region(mem_start, A2065_RAM_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 697 | return -ENOMEM; |
| 698 | } |
| 699 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 700 | priv = netdev_priv(dev); |
| 701 | |
| 702 | r1->name = dev->name; |
| 703 | r2->name = dev->name; |
| 704 | |
| 705 | dev->dev_addr[0] = 0x00; |
| 706 | if (z->id != ZORRO_PROD_AMERISTAR_A2065) { /* Commodore */ |
| 707 | dev->dev_addr[1] = 0x80; |
| 708 | dev->dev_addr[2] = 0x10; |
| 709 | } else { /* Ameristar */ |
| 710 | dev->dev_addr[1] = 0x00; |
| 711 | dev->dev_addr[2] = 0x9f; |
| 712 | } |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 713 | dev->dev_addr[3] = (z->rom.er_SerialNumber >> 16) & 0xff; |
| 714 | dev->dev_addr[4] = (z->rom.er_SerialNumber >> 8) & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 715 | dev->dev_addr[5] = z->rom.er_SerialNumber & 0xff; |
| 716 | dev->base_addr = ZTWO_VADDR(base_addr); |
| 717 | dev->mem_start = ZTWO_VADDR(mem_start); |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 718 | dev->mem_end = dev->mem_start + A2065_RAM_SIZE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 719 | |
| 720 | priv->ll = (volatile struct lance_regs *)dev->base_addr; |
| 721 | priv->init_block = (struct lance_init_block *)dev->mem_start; |
| 722 | priv->lance_init_block = (struct lance_init_block *)A2065_RAM; |
| 723 | priv->auto_select = 0; |
| 724 | priv->busmaster_regval = LE_C3_BSWP; |
| 725 | |
| 726 | priv->lance_log_rx_bufs = LANCE_LOG_RX_BUFFERS; |
| 727 | priv->lance_log_tx_bufs = LANCE_LOG_TX_BUFFERS; |
| 728 | priv->rx_ring_mod_mask = RX_RING_MOD_MASK; |
| 729 | priv->tx_ring_mod_mask = TX_RING_MOD_MASK; |
| 730 | |
Alexander Beregalov | 444f1a9 | 2009-04-14 18:30:21 +0000 | [diff] [blame] | 731 | dev->netdev_ops = &lance_netdev_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 732 | dev->watchdog_timeo = 5*HZ; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 733 | dev->dma = 0; |
| 734 | |
| 735 | init_timer(&priv->multicast_timer); |
| 736 | priv->multicast_timer.data = (unsigned long) dev; |
| 737 | priv->multicast_timer.function = |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 738 | (void (*)(unsigned long))lance_set_multicast; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 739 | |
| 740 | err = register_netdev(dev); |
| 741 | if (err) { |
Julia Lawall | e6937ee | 2011-03-22 07:15:23 +0000 | [diff] [blame] | 742 | release_mem_region(base_addr, sizeof(struct lance_regs)); |
| 743 | release_mem_region(mem_start, A2065_RAM_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 744 | free_netdev(dev); |
| 745 | return err; |
| 746 | } |
| 747 | zorro_set_drvdata(z, dev); |
| 748 | |
Joe Perches | 747e252 | 2011-06-22 20:38:54 +0000 | [diff] [blame] | 749 | netdev_info(dev, "A2065 at 0x%08lx, Ethernet Address %pM\n", |
| 750 | board, dev->dev_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 751 | |
| 752 | return 0; |
| 753 | } |
| 754 | |
| 755 | |
Bill Pemberton | 0cb0568 | 2012-12-03 09:23:54 -0500 | [diff] [blame] | 756 | static void a2065_remove_one(struct zorro_dev *z) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 757 | { |
| 758 | struct net_device *dev = zorro_get_drvdata(z); |
| 759 | |
| 760 | unregister_netdev(dev); |
| 761 | release_mem_region(ZTWO_PADDR(dev->base_addr), |
| 762 | sizeof(struct lance_regs)); |
| 763 | release_mem_region(ZTWO_PADDR(dev->mem_start), A2065_RAM_SIZE); |
| 764 | free_netdev(dev); |
| 765 | } |
| 766 | |
| 767 | static int __init a2065_init_module(void) |
| 768 | { |
Bjorn Helgaas | 33d8675 | 2006-03-25 03:07:20 -0800 | [diff] [blame] | 769 | return zorro_register_driver(&a2065_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 770 | } |
| 771 | |
| 772 | static void __exit a2065_cleanup_module(void) |
| 773 | { |
| 774 | zorro_unregister_driver(&a2065_driver); |
| 775 | } |
| 776 | |
| 777 | module_init(a2065_init_module); |
| 778 | module_exit(a2065_cleanup_module); |
| 779 | |
| 780 | MODULE_LICENSE("GPL"); |