Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* cs89x0.c: A Crystal Semiconductor (Now Cirrus Logic) CS89[02]0 |
| 2 | * driver for linux. |
| 3 | */ |
| 4 | |
| 5 | /* |
| 6 | Written 1996 by Russell Nelson, with reference to skeleton.c |
| 7 | written 1993-1994 by Donald Becker. |
| 8 | |
| 9 | This software may be used and distributed according to the terms |
| 10 | of the GNU General Public License, incorporated herein by reference. |
| 11 | |
| 12 | The author may be reached at nelson@crynwr.com, Crynwr |
| 13 | Software, 521 Pleasant Valley Rd., Potsdam, NY 13676 |
| 14 | |
| 15 | Changelog: |
| 16 | |
| 17 | Mike Cruse : mcruse@cti-ltd.com |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 18 | : Changes for Linux 2.0 compatibility. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | : Added dev_id parameter in net_interrupt(), |
| 20 | : request_irq() and free_irq(). Just NULL for now. |
| 21 | |
| 22 | Mike Cruse : Added MOD_INC_USE_COUNT and MOD_DEC_USE_COUNT macros |
| 23 | : in net_open() and net_close() so kerneld would know |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 24 | : that the module is in use and wouldn't eject the |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | : driver prematurely. |
| 26 | |
| 27 | Mike Cruse : Rewrote init_module() and cleanup_module using 8390.c |
| 28 | : as an example. Disabled autoprobing in init_module(), |
| 29 | : not a good thing to do to other devices while Linux |
| 30 | : is running from all accounts. |
| 31 | |
| 32 | Russ Nelson : Jul 13 1998. Added RxOnly DMA support. |
| 33 | |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 34 | Melody Lee : Aug 10 1999. Changes for Linux 2.2.5 compatibility. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | : email: ethernet@crystal.cirrus.com |
| 36 | |
| 37 | Alan Cox : Removed 1.2 support, added 2.1 extra counters. |
| 38 | |
Francois Cami | e1f8e87 | 2008-10-15 22:01:59 -0700 | [diff] [blame] | 39 | Andrew Morton : Kernel 2.3.48 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | : Handle kmalloc() failures |
| 41 | : Other resource allocation fixes |
| 42 | : Add SMP locks |
| 43 | : Integrate Russ Nelson's ALLOW_DMA functionality back in. |
| 44 | : If ALLOW_DMA is true, make DMA runtime selectable |
| 45 | : Folded in changes from Cirrus (Melody Lee |
| 46 | : <klee@crystal.cirrus.com>) |
| 47 | : Don't call netif_wake_queue() in net_send_packet() |
| 48 | : Fixed an out-of-mem bug in dma_rx() |
| 49 | : Updated Documentation/networking/cs89x0.txt |
| 50 | |
Francois Cami | e1f8e87 | 2008-10-15 22:01:59 -0700 | [diff] [blame] | 51 | Andrew Morton : Kernel 2.3.99-pre1 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | : Use skb_reserve to longword align IP header (two places) |
| 53 | : Remove a delay loop from dma_rx() |
| 54 | : Replace '100' with HZ |
| 55 | : Clean up a couple of skb API abuses |
| 56 | : Added 'cs89x0_dma=N' kernel boot option |
| 57 | : Correctly initialise lp->lock in non-module compile |
| 58 | |
Francois Cami | e1f8e87 | 2008-10-15 22:01:59 -0700 | [diff] [blame] | 59 | Andrew Morton : Kernel 2.3.99-pre4-1 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | : MOD_INC/DEC race fix (see |
| 61 | : http://www.uwsg.indiana.edu/hypermail/linux/kernel/0003.3/1532.html) |
| 62 | |
Francois Cami | e1f8e87 | 2008-10-15 22:01:59 -0700 | [diff] [blame] | 63 | Andrew Morton : Kernel 2.4.0-test7-pre2 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | : Enhanced EEPROM support to cover more devices, |
| 65 | : abstracted IRQ mapping to support CONFIG_ARCH_CLPS7500 arch |
| 66 | : (Jason Gunthorpe <jgg@ualberta.ca>) |
| 67 | |
| 68 | Andrew Morton : Kernel 2.4.0-test11-pre4 |
| 69 | : Use dev->name in request_*() (Andrey Panin) |
| 70 | : Fix an error-path memleak in init_module() |
| 71 | : Preserve return value from request_irq() |
| 72 | : Fix type of `media' module parm (Keith Owens) |
| 73 | : Use SET_MODULE_OWNER() |
| 74 | : Tidied up strange request_irq() abuse in net_open(). |
| 75 | |
| 76 | Andrew Morton : Kernel 2.4.3-pre1 |
| 77 | : Request correct number of pages for DMA (Hugh Dickens) |
| 78 | : Select PP_ChipID _after_ unregister_netdev in cleanup_module() |
| 79 | : because unregister_netdev() calls get_stats. |
| 80 | : Make `version[]' __initdata |
| 81 | : Uninlined the read/write reg/word functions. |
| 82 | |
| 83 | Oskar Schirmer : oskar@scara.com |
| 84 | : HiCO.SH4 (superh) support added (irq#1, cs89x0_media=) |
| 85 | |
| 86 | Deepak Saxena : dsaxena@plexity.net |
| 87 | : Intel IXDP2x01 (XScale ixp2x00 NPU) platform support |
| 88 | |
Lennert Buytenhek | 032874e | 2006-01-14 13:21:15 -0800 | [diff] [blame] | 89 | Dmitry Pervushin : dpervushin@ru.mvista.com |
| 90 | : PNX010X platform support |
| 91 | |
Deepak Saxena | 9c87896 | 2006-01-14 13:21:18 -0800 | [diff] [blame] | 92 | Deepak Saxena : dsaxena@plexity.net |
| 93 | : Intel IXDP2351 platform support |
| 94 | |
Lennert Buytenhek | 5aeebe0 | 2006-01-16 22:14:53 -0800 | [diff] [blame] | 95 | Dmitry Pervushin : dpervushin@ru.mvista.com |
| 96 | : PNX010X platform support |
| 97 | |
Domenico Andreoli | 2ce8c07 | 2011-03-14 03:47:07 +0000 | [diff] [blame] | 98 | Domenico Andreoli : cavokz@gmail.com |
| 99 | : QQ2440 platform support |
| 100 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | */ |
| 102 | |
| 103 | /* Always include 'config.h' first in case the user wants to turn on |
| 104 | or override something. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | #include <linux/module.h> |
| 106 | |
| 107 | /* |
| 108 | * Set this to zero to disable DMA code |
| 109 | * |
| 110 | * Note that even if DMA is turned off we still support the 'dma' and 'use_dma' |
| 111 | * module options so we don't break any startup scripts. |
| 112 | */ |
Lennert Buytenhek | 91e1c46 | 2006-01-11 12:17:34 -0800 | [diff] [blame] | 113 | #ifndef CONFIG_ISA_DMA_API |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | #define ALLOW_DMA 0 |
| 115 | #else |
| 116 | #define ALLOW_DMA 1 |
| 117 | #endif |
| 118 | |
| 119 | /* |
| 120 | * Set this to zero to remove all the debug statements via |
| 121 | * dead code elimination |
| 122 | */ |
| 123 | #define DEBUGGING 1 |
| 124 | |
| 125 | /* |
| 126 | Sources: |
| 127 | |
| 128 | Crynwr packet driver epktisa. |
| 129 | |
| 130 | Crystal Semiconductor data sheets. |
| 131 | |
| 132 | */ |
| 133 | |
| 134 | #include <linux/errno.h> |
| 135 | #include <linux/netdevice.h> |
| 136 | #include <linux/etherdevice.h> |
| 137 | #include <linux/kernel.h> |
| 138 | #include <linux/types.h> |
| 139 | #include <linux/fcntl.h> |
| 140 | #include <linux/interrupt.h> |
| 141 | #include <linux/ioport.h> |
| 142 | #include <linux/in.h> |
| 143 | #include <linux/skbuff.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | #include <linux/spinlock.h> |
| 145 | #include <linux/string.h> |
| 146 | #include <linux/init.h> |
| 147 | #include <linux/bitops.h> |
| 148 | #include <linux/delay.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 149 | #include <linux/gfp.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | |
| 151 | #include <asm/system.h> |
| 152 | #include <asm/io.h> |
Al Viro | 7625d48 | 2005-09-26 05:25:59 +0100 | [diff] [blame] | 153 | #include <asm/irq.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | #if ALLOW_DMA |
| 155 | #include <asm/dma.h> |
| 156 | #endif |
| 157 | |
| 158 | #include "cs89x0.h" |
| 159 | |
| 160 | static char version[] __initdata = |
Francois Cami | e1f8e87 | 2008-10-15 22:01:59 -0700 | [diff] [blame] | 161 | "cs89x0.c: v2.4.3-pre1 Russell Nelson <nelson@crynwr.com>, Andrew Morton\n"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | |
| 163 | #define DRV_NAME "cs89x0" |
| 164 | |
| 165 | /* First, a few definitions that the brave might change. |
| 166 | A zero-terminated list of I/O addresses to be probed. Some special flags.. |
| 167 | Addr & 1 = Read back the address port, look for signature and reset |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 168 | the page window before probing |
| 169 | Addr & 3 = Reset the page window and probe |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 170 | The CLPS eval board has the Cirrus chip at 0x80090300, in ARM IO space, |
| 171 | but it is possible that a Cirrus board could be plugged into the ISA |
| 172 | slots. */ |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 173 | /* The cs8900 has 4 IRQ pins, software selectable. cs8900_irq_map maps |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | them to system IRQ numbers. This mapping is card specific and is set to |
| 175 | the configuration of the Cirrus Eval board for this chip. */ |
Christoph Egger | ef3cf9f | 2010-07-14 13:40:36 -0700 | [diff] [blame] | 176 | #if defined(CONFIG_MACH_IXDP2351) |
Leonardo Potenza | a80763c | 2008-02-17 18:23:15 +0100 | [diff] [blame] | 177 | static unsigned int netcard_portlist[] __used __initdata = {IXDP2351_VIRT_CS8900_BASE, 0}; |
Deepak Saxena | 9c87896 | 2006-01-14 13:21:18 -0800 | [diff] [blame] | 178 | static unsigned int cs8900_irq_map[] = {IRQ_IXDP2351_CS8900, 0, 0, 0}; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | #elif defined(CONFIG_ARCH_IXDP2X01) |
Leonardo Potenza | a80763c | 2008-02-17 18:23:15 +0100 | [diff] [blame] | 180 | static unsigned int netcard_portlist[] __used __initdata = {IXDP2X01_CS8900_VIRT_BASE, 0}; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | static unsigned int cs8900_irq_map[] = {IRQ_IXDP2X01_CS8900, 0, 0, 0}; |
Domenico Andreoli | 2ce8c07 | 2011-03-14 03:47:07 +0000 | [diff] [blame] | 182 | #elif defined(CONFIG_MACH_QQ2440) |
| 183 | #include <mach/qq2440.h> |
| 184 | static unsigned int netcard_portlist[] __used __initdata = { QQ2440_CS8900_VIRT_BASE + 0x300, 0 }; |
| 185 | static unsigned int cs8900_irq_map[] = { QQ2440_CS8900_IRQ, 0, 0, 0 }; |
Gilles Chanteperdrix | 0ac4ed9 | 2008-09-26 15:44:43 +0100 | [diff] [blame] | 186 | #elif defined(CONFIG_MACH_MX31ADS) |
| 187 | #include <mach/board-mx31ads.h> |
| 188 | static unsigned int netcard_portlist[] __used __initdata = { |
| 189 | PBC_BASE_ADDRESS + PBC_CS8900A_IOBASE + 0x300, 0 |
| 190 | }; |
| 191 | static unsigned cs8900_irq_map[] = {EXPIO_INT_ENET_INT, 0, 0, 0}; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | #else |
Leonardo Potenza | a80763c | 2008-02-17 18:23:15 +0100 | [diff] [blame] | 193 | static unsigned int netcard_portlist[] __used __initdata = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | { 0x300, 0x320, 0x340, 0x360, 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0}; |
| 195 | static unsigned int cs8900_irq_map[] = {10,11,12,5}; |
| 196 | #endif |
| 197 | |
| 198 | #if DEBUGGING |
| 199 | static unsigned int net_debug = DEBUGGING; |
| 200 | #else |
| 201 | #define net_debug 0 /* gcc will remove all the debug code for us */ |
| 202 | #endif |
| 203 | |
| 204 | /* The number of low I/O ports used by the ethercard. */ |
| 205 | #define NETCARD_IO_EXTENT 16 |
| 206 | |
| 207 | /* we allow the user to override various values normally set in the EEPROM */ |
| 208 | #define FORCE_RJ45 0x0001 /* pick one of these three */ |
| 209 | #define FORCE_AUI 0x0002 |
| 210 | #define FORCE_BNC 0x0004 |
| 211 | |
| 212 | #define FORCE_AUTO 0x0010 /* pick one of these three */ |
| 213 | #define FORCE_HALF 0x0020 |
| 214 | #define FORCE_FULL 0x0030 |
| 215 | |
| 216 | /* Information that need to be kept for each board. */ |
| 217 | struct net_local { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | int chip_type; /* one of: CS8900, CS8920, CS8920M */ |
| 219 | char chip_revision; /* revision letter of the chip ('A'...) */ |
| 220 | int send_cmd; /* the proper send command: TX_NOW, TX_AFTER_381, or TX_AFTER_ALL */ |
| 221 | int auto_neg_cnf; /* auto-negotiation word from EEPROM */ |
| 222 | int adapter_cnf; /* adapter configuration from EEPROM */ |
| 223 | int isa_config; /* ISA configuration from EEPROM */ |
| 224 | int irq_map; /* IRQ map from EEPROM */ |
| 225 | int rx_mode; /* what mode are we in? 0, RX_MULTCAST_ACCEPT, or RX_ALL_ACCEPT */ |
| 226 | int curr_rx_cfg; /* a copy of PP_RxCFG */ |
| 227 | int linectl; /* either 0 or LOW_RX_SQUELCH, depending on configuration. */ |
| 228 | int send_underrun; /* keep track of how many underruns in a row we get */ |
| 229 | int force; /* force various values; see FORCE* above. */ |
| 230 | spinlock_t lock; |
| 231 | #if ALLOW_DMA |
| 232 | int use_dma; /* Flag: we're using dma */ |
| 233 | int dma; /* DMA channel */ |
| 234 | int dmasize; /* 16 or 64 */ |
| 235 | unsigned char *dma_buff; /* points to the beginning of the buffer */ |
| 236 | unsigned char *end_dma_buff; /* points to the end of the buffer */ |
| 237 | unsigned char *rx_dma_ptr; /* points to the next packet */ |
| 238 | #endif |
| 239 | }; |
| 240 | |
| 241 | /* Index to functions, as function prototypes. */ |
| 242 | |
| 243 | static int cs89x0_probe1(struct net_device *dev, int ioaddr, int modular); |
| 244 | static int net_open(struct net_device *dev); |
Stephen Hemminger | 61357325 | 2009-08-31 19:50:58 +0000 | [diff] [blame] | 245 | static netdev_tx_t net_send_packet(struct sk_buff *skb, struct net_device *dev); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 246 | static irqreturn_t net_interrupt(int irq, void *dev_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | static void set_multicast_list(struct net_device *dev); |
| 248 | static void net_timeout(struct net_device *dev); |
| 249 | static void net_rx(struct net_device *dev); |
| 250 | static int net_close(struct net_device *dev); |
| 251 | static struct net_device_stats *net_get_stats(struct net_device *dev); |
| 252 | static void reset_chip(struct net_device *dev); |
| 253 | static int get_eeprom_data(struct net_device *dev, int off, int len, int *buffer); |
| 254 | static int get_eeprom_cksum(int off, int len, int *buffer); |
| 255 | static int set_mac_address(struct net_device *dev, void *addr); |
Kulikov Vasiliy | 661a16c | 2010-07-05 02:13:15 +0000 | [diff] [blame] | 256 | static void count_rx_errors(int status, struct net_device *dev); |
Deepak Saxena | 6f51916 | 2005-09-09 13:02:07 -0700 | [diff] [blame] | 257 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 258 | static void net_poll_controller(struct net_device *dev); |
| 259 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | #if ALLOW_DMA |
| 261 | static void get_dma_channel(struct net_device *dev); |
| 262 | static void release_dma_buff(struct net_local *lp); |
| 263 | #endif |
| 264 | |
| 265 | /* Example routines you must write ;->. */ |
| 266 | #define tx_done(dev) 1 |
| 267 | |
| 268 | /* |
| 269 | * Permit 'cs89x0_dma=N' in the kernel boot environment |
| 270 | */ |
| 271 | #if !defined(MODULE) && (ALLOW_DMA != 0) |
| 272 | static int g_cs89x0_dma; |
| 273 | |
| 274 | static int __init dma_fn(char *str) |
| 275 | { |
| 276 | g_cs89x0_dma = simple_strtol(str,NULL,0); |
| 277 | return 1; |
| 278 | } |
| 279 | |
| 280 | __setup("cs89x0_dma=", dma_fn); |
| 281 | #endif /* !defined(MODULE) && (ALLOW_DMA != 0) */ |
| 282 | |
| 283 | #ifndef MODULE |
| 284 | static int g_cs89x0_media__force; |
| 285 | |
| 286 | static int __init media_fn(char *str) |
| 287 | { |
| 288 | if (!strcmp(str, "rj45")) g_cs89x0_media__force = FORCE_RJ45; |
| 289 | else if (!strcmp(str, "aui")) g_cs89x0_media__force = FORCE_AUI; |
| 290 | else if (!strcmp(str, "bnc")) g_cs89x0_media__force = FORCE_BNC; |
| 291 | return 1; |
| 292 | } |
| 293 | |
| 294 | __setup("cs89x0_media=", media_fn); |
| 295 | |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 296 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | /* Check for a network adaptor of this type, and return '0' iff one exists. |
| 298 | If dev->base_addr == 0, probe all likely locations. |
| 299 | If dev->base_addr == 1, always return failure. |
| 300 | If dev->base_addr == 2, allocate space for the device and return success |
| 301 | (detachable devices only). |
| 302 | Return 0 on success. |
| 303 | */ |
| 304 | |
| 305 | struct net_device * __init cs89x0_probe(int unit) |
| 306 | { |
| 307 | struct net_device *dev = alloc_etherdev(sizeof(struct net_local)); |
| 308 | unsigned *port; |
| 309 | int err = 0; |
| 310 | int irq; |
| 311 | int io; |
| 312 | |
| 313 | if (!dev) |
| 314 | return ERR_PTR(-ENODEV); |
| 315 | |
| 316 | sprintf(dev->name, "eth%d", unit); |
| 317 | netdev_boot_setup_check(dev); |
| 318 | io = dev->base_addr; |
| 319 | irq = dev->irq; |
| 320 | |
| 321 | if (net_debug) |
| 322 | printk("cs89x0:cs89x0_probe(0x%x)\n", io); |
| 323 | |
| 324 | if (io > 0x1ff) { /* Check a single specified location. */ |
| 325 | err = cs89x0_probe1(dev, io, 0); |
| 326 | } else if (io != 0) { /* Don't probe at all. */ |
| 327 | err = -ENXIO; |
| 328 | } else { |
| 329 | for (port = netcard_portlist; *port; port++) { |
| 330 | if (cs89x0_probe1(dev, *port, 0) == 0) |
| 331 | break; |
| 332 | dev->irq = irq; |
| 333 | } |
| 334 | if (!*port) |
| 335 | err = -ENODEV; |
| 336 | } |
| 337 | if (err) |
| 338 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | return dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | out: |
| 341 | free_netdev(dev); |
| 342 | printk(KERN_WARNING "cs89x0: no cs8900 or cs8920 detected. Be sure to disable PnP with SETUP\n"); |
| 343 | return ERR_PTR(err); |
| 344 | } |
| 345 | #endif |
| 346 | |
Deepak Saxena | 9c87896 | 2006-01-14 13:21:18 -0800 | [diff] [blame] | 347 | #if defined(CONFIG_MACH_IXDP2351) |
| 348 | static u16 |
| 349 | readword(unsigned long base_addr, int portno) |
| 350 | { |
| 351 | return __raw_readw(base_addr + (portno << 1)); |
| 352 | } |
| 353 | |
| 354 | static void |
| 355 | writeword(unsigned long base_addr, int portno, u16 value) |
| 356 | { |
| 357 | __raw_writew(value, base_addr + (portno << 1)); |
| 358 | } |
| 359 | #elif defined(CONFIG_ARCH_IXDP2X01) |
Lennert Buytenhek | a07f0db | 2006-01-14 13:21:17 -0800 | [diff] [blame] | 360 | static u16 |
Lennert Buytenhek | 3b68d70 | 2006-01-08 01:01:11 -0800 | [diff] [blame] | 361 | readword(unsigned long base_addr, int portno) |
| 362 | { |
Lennert Buytenhek | a07f0db | 2006-01-14 13:21:17 -0800 | [diff] [blame] | 363 | return __raw_readl(base_addr + (portno << 1)); |
Lennert Buytenhek | 3b68d70 | 2006-01-08 01:01:11 -0800 | [diff] [blame] | 364 | } |
| 365 | |
| 366 | static void |
Lennert Buytenhek | a07f0db | 2006-01-14 13:21:17 -0800 | [diff] [blame] | 367 | writeword(unsigned long base_addr, int portno, u16 value) |
Lennert Buytenhek | 3b68d70 | 2006-01-08 01:01:11 -0800 | [diff] [blame] | 368 | { |
Lennert Buytenhek | a07f0db | 2006-01-14 13:21:17 -0800 | [diff] [blame] | 369 | __raw_writel(value, base_addr + (portno << 1)); |
Lennert Buytenhek | 3b68d70 | 2006-01-08 01:01:11 -0800 | [diff] [blame] | 370 | } |
Lennert Buytenhek | 3b68d70 | 2006-01-08 01:01:11 -0800 | [diff] [blame] | 371 | #else |
Lennert Buytenhek | a07f0db | 2006-01-14 13:21:17 -0800 | [diff] [blame] | 372 | static u16 |
Lennert Buytenhek | 0d5affc | 2006-01-08 01:01:09 -0800 | [diff] [blame] | 373 | readword(unsigned long base_addr, int portno) |
| 374 | { |
| 375 | return inw(base_addr + portno); |
| 376 | } |
| 377 | |
| 378 | static void |
Lennert Buytenhek | a07f0db | 2006-01-14 13:21:17 -0800 | [diff] [blame] | 379 | writeword(unsigned long base_addr, int portno, u16 value) |
Lennert Buytenhek | 0d5affc | 2006-01-08 01:01:09 -0800 | [diff] [blame] | 380 | { |
| 381 | outw(value, base_addr + portno); |
| 382 | } |
Lennert Buytenhek | 3b68d70 | 2006-01-08 01:01:11 -0800 | [diff] [blame] | 383 | #endif |
Lennert Buytenhek | 0d5affc | 2006-01-08 01:01:09 -0800 | [diff] [blame] | 384 | |
Lennert Buytenhek | 084f746 | 2006-01-08 01:01:12 -0800 | [diff] [blame] | 385 | static void |
| 386 | readwords(unsigned long base_addr, int portno, void *buf, int length) |
| 387 | { |
| 388 | u8 *buf8 = (u8 *)buf; |
| 389 | |
| 390 | do { |
Lennert Buytenhek | a07f0db | 2006-01-14 13:21:17 -0800 | [diff] [blame] | 391 | u16 tmp16; |
Lennert Buytenhek | 084f746 | 2006-01-08 01:01:12 -0800 | [diff] [blame] | 392 | |
Lennert Buytenhek | a07f0db | 2006-01-14 13:21:17 -0800 | [diff] [blame] | 393 | tmp16 = readword(base_addr, portno); |
| 394 | *buf8++ = (u8)tmp16; |
| 395 | *buf8++ = (u8)(tmp16 >> 8); |
Lennert Buytenhek | 084f746 | 2006-01-08 01:01:12 -0800 | [diff] [blame] | 396 | } while (--length); |
| 397 | } |
| 398 | |
| 399 | static void |
| 400 | writewords(unsigned long base_addr, int portno, void *buf, int length) |
| 401 | { |
| 402 | u8 *buf8 = (u8 *)buf; |
| 403 | |
| 404 | do { |
Lennert Buytenhek | a07f0db | 2006-01-14 13:21:17 -0800 | [diff] [blame] | 405 | u16 tmp16; |
Lennert Buytenhek | 084f746 | 2006-01-08 01:01:12 -0800 | [diff] [blame] | 406 | |
Lennert Buytenhek | a07f0db | 2006-01-14 13:21:17 -0800 | [diff] [blame] | 407 | tmp16 = *buf8++; |
| 408 | tmp16 |= (*buf8++) << 8; |
| 409 | writeword(base_addr, portno, tmp16); |
Lennert Buytenhek | 084f746 | 2006-01-08 01:01:12 -0800 | [diff] [blame] | 410 | } while (--length); |
| 411 | } |
| 412 | |
Lennert Buytenhek | a07f0db | 2006-01-14 13:21:17 -0800 | [diff] [blame] | 413 | static u16 |
| 414 | readreg(struct net_device *dev, u16 regno) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | { |
Lennert Buytenhek | 3eaa5e7 | 2006-01-08 01:01:10 -0800 | [diff] [blame] | 416 | writeword(dev->base_addr, ADD_PORT, regno); |
| 417 | return readword(dev->base_addr, DATA_PORT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | } |
| 419 | |
| 420 | static void |
Lennert Buytenhek | a07f0db | 2006-01-14 13:21:17 -0800 | [diff] [blame] | 421 | writereg(struct net_device *dev, u16 regno, u16 value) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 422 | { |
Lennert Buytenhek | 3eaa5e7 | 2006-01-08 01:01:10 -0800 | [diff] [blame] | 423 | writeword(dev->base_addr, ADD_PORT, regno); |
| 424 | writeword(dev->base_addr, DATA_PORT, value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 425 | } |
| 426 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | static int __init |
| 428 | wait_eeprom_ready(struct net_device *dev) |
| 429 | { |
| 430 | int timeout = jiffies; |
| 431 | /* check to see if the EEPROM is ready, a timeout is used - |
| 432 | just in case EEPROM is ready when SI_BUSY in the |
| 433 | PP_SelfST is clear */ |
| 434 | while(readreg(dev, PP_SelfST) & SI_BUSY) |
| 435 | if (jiffies - timeout >= 40) |
| 436 | return -1; |
| 437 | return 0; |
| 438 | } |
| 439 | |
| 440 | static int __init |
| 441 | get_eeprom_data(struct net_device *dev, int off, int len, int *buffer) |
| 442 | { |
| 443 | int i; |
| 444 | |
| 445 | if (net_debug > 3) printk("EEPROM data from %x for %x:\n",off,len); |
| 446 | for (i = 0; i < len; i++) { |
| 447 | if (wait_eeprom_ready(dev) < 0) return -1; |
| 448 | /* Now send the EEPROM read command and EEPROM location to read */ |
| 449 | writereg(dev, PP_EECMD, (off + i) | EEPROM_READ_CMD); |
| 450 | if (wait_eeprom_ready(dev) < 0) return -1; |
| 451 | buffer[i] = readreg(dev, PP_EEData); |
| 452 | if (net_debug > 3) printk("%04x ", buffer[i]); |
| 453 | } |
| 454 | if (net_debug > 3) printk("\n"); |
| 455 | return 0; |
| 456 | } |
| 457 | |
| 458 | static int __init |
| 459 | get_eeprom_cksum(int off, int len, int *buffer) |
| 460 | { |
| 461 | int i, cksum; |
| 462 | |
| 463 | cksum = 0; |
| 464 | for (i = 0; i < len; i++) |
| 465 | cksum += buffer[i]; |
| 466 | cksum &= 0xffff; |
| 467 | if (cksum == 0) |
| 468 | return 0; |
| 469 | return -1; |
| 470 | } |
| 471 | |
Deepak Saxena | 6f51916 | 2005-09-09 13:02:07 -0700 | [diff] [blame] | 472 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 473 | /* |
| 474 | * Polling receive - used by netconsole and other diagnostic tools |
| 475 | * to allow network i/o with interrupts disabled. |
| 476 | */ |
| 477 | static void net_poll_controller(struct net_device *dev) |
| 478 | { |
| 479 | disable_irq(dev->irq); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 480 | net_interrupt(dev->irq, dev); |
Deepak Saxena | 6f51916 | 2005-09-09 13:02:07 -0700 | [diff] [blame] | 481 | enable_irq(dev->irq); |
| 482 | } |
| 483 | #endif |
| 484 | |
Stephen Hemminger | 15d23e7 | 2009-03-26 15:11:43 +0000 | [diff] [blame] | 485 | static const struct net_device_ops net_ops = { |
| 486 | .ndo_open = net_open, |
| 487 | .ndo_stop = net_close, |
| 488 | .ndo_tx_timeout = net_timeout, |
| 489 | .ndo_start_xmit = net_send_packet, |
| 490 | .ndo_get_stats = net_get_stats, |
Jiri Pirko | afc4b13 | 2011-08-16 06:29:01 +0000 | [diff] [blame] | 491 | .ndo_set_rx_mode = set_multicast_list, |
Stephen Hemminger | 15d23e7 | 2009-03-26 15:11:43 +0000 | [diff] [blame] | 492 | .ndo_set_mac_address = set_mac_address, |
| 493 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 494 | .ndo_poll_controller = net_poll_controller, |
| 495 | #endif |
| 496 | .ndo_change_mtu = eth_change_mtu, |
| 497 | .ndo_validate_addr = eth_validate_addr, |
| 498 | }; |
| 499 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | /* This is the real probe routine. Linux has a history of friendly device |
| 501 | probes on the ISA bus. A good device probes avoids doing writes, and |
| 502 | verifies that the correct device exists and functions. |
| 503 | Return 0 on success. |
| 504 | */ |
| 505 | |
| 506 | static int __init |
| 507 | cs89x0_probe1(struct net_device *dev, int ioaddr, int modular) |
| 508 | { |
| 509 | struct net_local *lp = netdev_priv(dev); |
| 510 | static unsigned version_printed; |
| 511 | int i; |
Denis Vlasenko | 01bdc03 | 2005-07-31 22:34:50 -0700 | [diff] [blame] | 512 | int tmp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | unsigned rev_type = 0; |
| 514 | int eeprom_buff[CHKSUM_LEN]; |
| 515 | int retval; |
| 516 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | /* Initialize the device structure. */ |
| 518 | if (!modular) { |
| 519 | memset(lp, 0, sizeof(*lp)); |
| 520 | spin_lock_init(&lp->lock); |
| 521 | #ifndef MODULE |
| 522 | #if ALLOW_DMA |
| 523 | if (g_cs89x0_dma) { |
| 524 | lp->use_dma = 1; |
| 525 | lp->dma = g_cs89x0_dma; |
| 526 | lp->dmasize = 16; /* Could make this an option... */ |
| 527 | } |
| 528 | #endif |
| 529 | lp->force = g_cs89x0_media__force; |
| 530 | #endif |
Domenico Andreoli | 2ce8c07 | 2011-03-14 03:47:07 +0000 | [diff] [blame] | 531 | |
| 532 | #if defined(CONFIG_MACH_QQ2440) |
| 533 | lp->force |= FORCE_RJ45 | FORCE_FULL; |
| 534 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | } |
| 536 | |
| 537 | /* Grab the region so we can find another board if autoIRQ fails. */ |
| 538 | /* WTF is going on here? */ |
| 539 | if (!request_region(ioaddr & ~3, NETCARD_IO_EXTENT, DRV_NAME)) { |
| 540 | printk(KERN_ERR "%s: request_region(0x%x, 0x%x) failed\n", |
| 541 | DRV_NAME, ioaddr, NETCARD_IO_EXTENT); |
| 542 | retval = -EBUSY; |
| 543 | goto out1; |
| 544 | } |
| 545 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 546 | /* if they give us an odd I/O address, then do ONE write to |
| 547 | the address port, to get it back to address zero, where we |
| 548 | expect to find the EISA signature word. An IO with a base of 0x3 |
| 549 | will skip the test for the ADD_PORT. */ |
| 550 | if (ioaddr & 1) { |
| 551 | if (net_debug > 1) |
| 552 | printk(KERN_INFO "%s: odd ioaddr 0x%x\n", dev->name, ioaddr); |
| 553 | if ((ioaddr & 2) != 2) |
Lennert Buytenhek | fc8c7d7 | 2006-01-08 01:01:08 -0800 | [diff] [blame] | 554 | if ((readword(ioaddr & ~3, ADD_PORT) & ADD_MASK) != ADD_SIG) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 555 | printk(KERN_ERR "%s: bad signature 0x%x\n", |
Lennert Buytenhek | fc8c7d7 | 2006-01-08 01:01:08 -0800 | [diff] [blame] | 556 | dev->name, readword(ioaddr & ~3, ADD_PORT)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 557 | retval = -ENODEV; |
| 558 | goto out2; |
| 559 | } |
| 560 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 561 | |
| 562 | ioaddr &= ~3; |
George G. Davis | 9e1402a | 2006-11-16 14:50:14 -0500 | [diff] [blame] | 563 | printk(KERN_DEBUG "PP_addr at %x[%x]: 0x%x\n", |
| 564 | ioaddr, ADD_PORT, readword(ioaddr, ADD_PORT)); |
Lennert Buytenhek | fc8c7d7 | 2006-01-08 01:01:08 -0800 | [diff] [blame] | 565 | writeword(ioaddr, ADD_PORT, PP_ChipID); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | |
Lennert Buytenhek | fc8c7d7 | 2006-01-08 01:01:08 -0800 | [diff] [blame] | 567 | tmp = readword(ioaddr, DATA_PORT); |
Denis Vlasenko | 01bdc03 | 2005-07-31 22:34:50 -0700 | [diff] [blame] | 568 | if (tmp != CHIP_EISA_ID_SIG) { |
Lennert Buytenhek | fc8c7d7 | 2006-01-08 01:01:08 -0800 | [diff] [blame] | 569 | printk(KERN_DEBUG "%s: incorrect signature at %x[%x]: 0x%x!=" |
Denis Vlasenko | 01bdc03 | 2005-07-31 22:34:50 -0700 | [diff] [blame] | 570 | CHIP_EISA_ID_SIG_STR "\n", |
Lennert Buytenhek | fc8c7d7 | 2006-01-08 01:01:08 -0800 | [diff] [blame] | 571 | dev->name, ioaddr, DATA_PORT, tmp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 572 | retval = -ENODEV; |
| 573 | goto out2; |
| 574 | } |
| 575 | |
| 576 | /* Fill in the 'dev' fields. */ |
| 577 | dev->base_addr = ioaddr; |
| 578 | |
| 579 | /* get the chip type */ |
| 580 | rev_type = readreg(dev, PRODUCT_ID_ADD); |
| 581 | lp->chip_type = rev_type &~ REVISON_BITS; |
| 582 | lp->chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A'; |
| 583 | |
| 584 | /* Check the chip type and revision in order to set the correct send command |
| 585 | CS8920 revision C and CS8900 revision F can use the faster send. */ |
| 586 | lp->send_cmd = TX_AFTER_381; |
| 587 | if (lp->chip_type == CS8900 && lp->chip_revision >= 'F') |
| 588 | lp->send_cmd = TX_NOW; |
| 589 | if (lp->chip_type != CS8900 && lp->chip_revision >= 'C') |
| 590 | lp->send_cmd = TX_NOW; |
| 591 | |
| 592 | if (net_debug && version_printed++ == 0) |
| 593 | printk(version); |
| 594 | |
| 595 | printk(KERN_INFO "%s: cs89%c0%s rev %c found at %#3lx ", |
| 596 | dev->name, |
| 597 | lp->chip_type==CS8900?'0':'2', |
| 598 | lp->chip_type==CS8920M?"M":"", |
| 599 | lp->chip_revision, |
| 600 | dev->base_addr); |
| 601 | |
| 602 | reset_chip(dev); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 603 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 604 | /* Here we read the current configuration of the chip. If there |
| 605 | is no Extended EEPROM then the idea is to not disturb the chip |
| 606 | configuration, it should have been correctly setup by automatic |
| 607 | EEPROM read on reset. So, if the chip says it read the EEPROM |
| 608 | the driver will always do *something* instead of complain that |
| 609 | adapter_cnf is 0. */ |
| 610 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 612 | if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) == |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 613 | (EEPROM_OK|EEPROM_PRESENT)) { |
| 614 | /* Load the MAC. */ |
| 615 | for (i=0; i < ETH_ALEN/2; i++) { |
| 616 | unsigned int Addr; |
| 617 | Addr = readreg(dev, PP_IA+i*2); |
| 618 | dev->dev_addr[i*2] = Addr & 0xFF; |
| 619 | dev->dev_addr[i*2+1] = Addr >> 8; |
| 620 | } |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 621 | |
| 622 | /* Load the Adapter Configuration. |
| 623 | Note: Barring any more specific information from some |
| 624 | other source (ie EEPROM+Schematics), we would not know |
| 625 | how to operate a 10Base2 interface on the AUI port. |
| 626 | However, since we do read the status of HCB1 and use |
| 627 | settings that always result in calls to control_dc_dc(dev,0) |
| 628 | a BNC interface should work if the enable pin |
| 629 | (dc/dc converter) is on HCB1. It will be called AUI |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 630 | however. */ |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 631 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 632 | lp->adapter_cnf = 0; |
| 633 | i = readreg(dev, PP_LineCTL); |
| 634 | /* Preserve the setting of the HCB1 pin. */ |
| 635 | if ((i & (HCB1 | HCB1_ENBL)) == (HCB1 | HCB1_ENBL)) |
| 636 | lp->adapter_cnf |= A_CNF_DC_DC_POLARITY; |
| 637 | /* Save the sqelch bit */ |
| 638 | if ((i & LOW_RX_SQUELCH) == LOW_RX_SQUELCH) |
| 639 | lp->adapter_cnf |= A_CNF_EXTND_10B_2 | A_CNF_LOW_RX_SQUELCH; |
| 640 | /* Check if the card is in 10Base-t only mode */ |
| 641 | if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == 0) |
| 642 | lp->adapter_cnf |= A_CNF_10B_T | A_CNF_MEDIA_10B_T; |
| 643 | /* Check if the card is in AUI only mode */ |
| 644 | if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUI_ONLY) |
| 645 | lp->adapter_cnf |= A_CNF_AUI | A_CNF_MEDIA_AUI; |
| 646 | /* Check if the card is in Auto mode. */ |
| 647 | if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUTO_AUI_10BASET) |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 648 | lp->adapter_cnf |= A_CNF_AUI | A_CNF_10B_T | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 649 | A_CNF_MEDIA_AUI | A_CNF_MEDIA_10B_T | A_CNF_MEDIA_AUTO; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 650 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 651 | if (net_debug > 1) |
| 652 | printk(KERN_INFO "%s: PP_LineCTL=0x%x, adapter_cnf=0x%x\n", |
| 653 | dev->name, i, lp->adapter_cnf); |
| 654 | |
| 655 | /* IRQ. Other chips already probe, see below. */ |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 656 | if (lp->chip_type == CS8900) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 657 | lp->isa_config = readreg(dev, PP_CS8900_ISAINT) & INT_NO_MASK; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 658 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 659 | printk( "[Cirrus EEPROM] "); |
| 660 | } |
| 661 | |
| 662 | printk("\n"); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 663 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 664 | /* First check to see if an EEPROM is attached. */ |
Christoph Egger | ef3cf9f | 2010-07-14 13:40:36 -0700 | [diff] [blame] | 665 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 666 | if ((readreg(dev, PP_SelfST) & EEPROM_PRESENT) == 0) |
| 667 | printk(KERN_WARNING "cs89x0: No EEPROM, relying on command line....\n"); |
| 668 | else if (get_eeprom_data(dev, START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) { |
| 669 | printk(KERN_WARNING "\ncs89x0: EEPROM read failed, relying on command line.\n"); |
| 670 | } else if (get_eeprom_cksum(START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) { |
| 671 | /* Check if the chip was able to read its own configuration starting |
| 672 | at 0 in the EEPROM*/ |
| 673 | if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) != |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 674 | (EEPROM_OK|EEPROM_PRESENT)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 675 | printk(KERN_WARNING "cs89x0: Extended EEPROM checksum bad and no Cirrus EEPROM, relying on command line\n"); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 676 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 677 | } else { |
| 678 | /* This reads an extended EEPROM that is not documented |
| 679 | in the CS8900 datasheet. */ |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 680 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 681 | /* get transmission control word but keep the autonegotiation bits */ |
| 682 | if (!lp->auto_neg_cnf) lp->auto_neg_cnf = eeprom_buff[AUTO_NEG_CNF_OFFSET/2]; |
| 683 | /* Store adapter configuration */ |
| 684 | if (!lp->adapter_cnf) lp->adapter_cnf = eeprom_buff[ADAPTER_CNF_OFFSET/2]; |
| 685 | /* Store ISA configuration */ |
| 686 | lp->isa_config = eeprom_buff[ISA_CNF_OFFSET/2]; |
| 687 | dev->mem_start = eeprom_buff[PACKET_PAGE_OFFSET/2] << 8; |
| 688 | |
| 689 | /* eeprom_buff has 32-bit ints, so we can't just memcpy it */ |
| 690 | /* store the initial memory base address */ |
| 691 | for (i = 0; i < ETH_ALEN/2; i++) { |
| 692 | dev->dev_addr[i*2] = eeprom_buff[i]; |
| 693 | dev->dev_addr[i*2+1] = eeprom_buff[i] >> 8; |
| 694 | } |
| 695 | if (net_debug > 1) |
| 696 | printk(KERN_DEBUG "%s: new adapter_cnf: 0x%x\n", |
| 697 | dev->name, lp->adapter_cnf); |
| 698 | } |
| 699 | |
| 700 | /* allow them to force multiple transceivers. If they force multiple, autosense */ |
| 701 | { |
| 702 | int count = 0; |
| 703 | if (lp->force & FORCE_RJ45) {lp->adapter_cnf |= A_CNF_10B_T; count++; } |
| 704 | if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_AUI; count++; } |
| 705 | if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_10B_2; count++; } |
| 706 | if (count > 1) {lp->adapter_cnf |= A_CNF_MEDIA_AUTO; } |
| 707 | else if (lp->force & FORCE_RJ45){lp->adapter_cnf |= A_CNF_MEDIA_10B_T; } |
| 708 | else if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_MEDIA_AUI; } |
| 709 | else if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_MEDIA_10B_2; } |
| 710 | } |
| 711 | |
| 712 | if (net_debug > 1) |
| 713 | printk(KERN_DEBUG "%s: after force 0x%x, adapter_cnf=0x%x\n", |
| 714 | dev->name, lp->force, lp->adapter_cnf); |
| 715 | |
| 716 | /* FIXME: We don't let you set dc-dc polarity or low RX squelch from the command line: add it here */ |
| 717 | |
| 718 | /* FIXME: We don't let you set the IMM bit from the command line: add it to lp->auto_neg_cnf here */ |
| 719 | |
| 720 | /* FIXME: we don't set the Ethernet address on the command line. Use |
| 721 | ifconfig IFACE hw ether AABBCCDDEEFF */ |
| 722 | |
| 723 | printk(KERN_INFO "cs89x0 media %s%s%s", |
| 724 | (lp->adapter_cnf & A_CNF_10B_T)?"RJ-45,":"", |
| 725 | (lp->adapter_cnf & A_CNF_AUI)?"AUI,":"", |
| 726 | (lp->adapter_cnf & A_CNF_10B_2)?"BNC,":""); |
| 727 | |
| 728 | lp->irq_map = 0xffff; |
| 729 | |
| 730 | /* If this is a CS8900 then no pnp soft */ |
| 731 | if (lp->chip_type != CS8900 && |
| 732 | /* Check if the ISA IRQ has been set */ |
| 733 | (i = readreg(dev, PP_CS8920_ISAINT) & 0xff, |
| 734 | (i != 0 && i < CS8920_NO_INTS))) { |
| 735 | if (!dev->irq) |
| 736 | dev->irq = i; |
| 737 | } else { |
| 738 | i = lp->isa_config & INT_NO_MASK; |
| 739 | if (lp->chip_type == CS8900) { |
Gilles Chanteperdrix | 0ac4ed9 | 2008-09-26 15:44:43 +0100 | [diff] [blame] | 740 | #ifdef CONFIG_CS89x0_NONISA_IRQ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 741 | i = cs8900_irq_map[0]; |
| 742 | #else |
| 743 | /* Translate the IRQ using the IRQ mapping table. */ |
Denis Cheng | ff8ac60 | 2007-09-02 18:30:18 +0800 | [diff] [blame] | 744 | if (i >= ARRAY_SIZE(cs8900_irq_map)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 745 | printk("\ncs89x0: invalid ISA interrupt number %d\n", i); |
| 746 | else |
| 747 | i = cs8900_irq_map[i]; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 748 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 749 | lp->irq_map = CS8900_IRQ_MAP; /* fixed IRQ map for CS8900 */ |
| 750 | } else { |
| 751 | int irq_map_buff[IRQ_MAP_LEN/2]; |
| 752 | |
| 753 | if (get_eeprom_data(dev, IRQ_MAP_EEPROM_DATA, |
| 754 | IRQ_MAP_LEN/2, |
| 755 | irq_map_buff) >= 0) { |
| 756 | if ((irq_map_buff[0] & 0xff) == PNP_IRQ_FRMT) |
| 757 | lp->irq_map = (irq_map_buff[0]>>8) | (irq_map_buff[1] << 8); |
| 758 | } |
| 759 | #endif |
| 760 | } |
| 761 | if (!dev->irq) |
| 762 | dev->irq = i; |
| 763 | } |
| 764 | |
| 765 | printk(" IRQ %d", dev->irq); |
| 766 | |
| 767 | #if ALLOW_DMA |
| 768 | if (lp->use_dma) { |
| 769 | get_dma_channel(dev); |
| 770 | printk(", DMA %d", dev->dma); |
| 771 | } |
| 772 | else |
| 773 | #endif |
| 774 | { |
| 775 | printk(", programmed I/O"); |
| 776 | } |
| 777 | |
| 778 | /* print the ethernet address. */ |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 779 | printk(", MAC %pM", dev->dev_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 780 | |
Stephen Hemminger | 15d23e7 | 2009-03-26 15:11:43 +0000 | [diff] [blame] | 781 | dev->netdev_ops = &net_ops; |
| 782 | dev->watchdog_timeo = HZ; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 783 | |
| 784 | printk("\n"); |
| 785 | if (net_debug) |
| 786 | printk("cs89x0_probe1() successful\n"); |
| b1fc550 | 2005-05-12 20:11:55 -0400 | [diff] [blame] | 787 | |
| 788 | retval = register_netdev(dev); |
| 789 | if (retval) |
| 790 | goto out3; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 791 | return 0; |
| b1fc550 | 2005-05-12 20:11:55 -0400 | [diff] [blame] | 792 | out3: |
Lennert Buytenhek | fc8c7d7 | 2006-01-08 01:01:08 -0800 | [diff] [blame] | 793 | writeword(dev->base_addr, ADD_PORT, PP_ChipID); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 794 | out2: |
| 795 | release_region(ioaddr & ~3, NETCARD_IO_EXTENT); |
| 796 | out1: |
| 797 | return retval; |
| 798 | } |
| 799 | |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 800 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 801 | /********************************* |
| 802 | * This page contains DMA routines |
| 803 | **********************************/ |
| 804 | |
| 805 | #if ALLOW_DMA |
| 806 | |
| 807 | #define dma_page_eq(ptr1, ptr2) ((long)(ptr1)>>17 == (long)(ptr2)>>17) |
| 808 | |
| 809 | static void |
| 810 | get_dma_channel(struct net_device *dev) |
| 811 | { |
| 812 | struct net_local *lp = netdev_priv(dev); |
| 813 | |
| 814 | if (lp->dma) { |
| 815 | dev->dma = lp->dma; |
| 816 | lp->isa_config |= ISA_RxDMA; |
| 817 | } else { |
| 818 | if ((lp->isa_config & ANY_ISA_DMA) == 0) |
| 819 | return; |
| 820 | dev->dma = lp->isa_config & DMA_NO_MASK; |
| 821 | if (lp->chip_type == CS8900) |
| 822 | dev->dma += 5; |
| 823 | if (dev->dma < 5 || dev->dma > 7) { |
| 824 | lp->isa_config &= ~ANY_ISA_DMA; |
| 825 | return; |
| 826 | } |
| 827 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 828 | } |
| 829 | |
| 830 | static void |
| 831 | write_dma(struct net_device *dev, int chip_type, int dma) |
| 832 | { |
| 833 | struct net_local *lp = netdev_priv(dev); |
| 834 | if ((lp->isa_config & ANY_ISA_DMA) == 0) |
| 835 | return; |
| 836 | if (chip_type == CS8900) { |
| 837 | writereg(dev, PP_CS8900_ISADMA, dma-5); |
| 838 | } else { |
| 839 | writereg(dev, PP_CS8920_ISADMA, dma); |
| 840 | } |
| 841 | } |
| 842 | |
| 843 | static void |
| 844 | set_dma_cfg(struct net_device *dev) |
| 845 | { |
| 846 | struct net_local *lp = netdev_priv(dev); |
| 847 | |
| 848 | if (lp->use_dma) { |
| 849 | if ((lp->isa_config & ANY_ISA_DMA) == 0) { |
| 850 | if (net_debug > 3) |
| 851 | printk("set_dma_cfg(): no DMA\n"); |
| 852 | return; |
| 853 | } |
| 854 | if (lp->isa_config & ISA_RxDMA) { |
| 855 | lp->curr_rx_cfg |= RX_DMA_ONLY; |
| 856 | if (net_debug > 3) |
| 857 | printk("set_dma_cfg(): RX_DMA_ONLY\n"); |
| 858 | } else { |
| 859 | lp->curr_rx_cfg |= AUTO_RX_DMA; /* not that we support it... */ |
| 860 | if (net_debug > 3) |
| 861 | printk("set_dma_cfg(): AUTO_RX_DMA\n"); |
| 862 | } |
| 863 | } |
| 864 | } |
| 865 | |
| 866 | static int |
| 867 | dma_bufcfg(struct net_device *dev) |
| 868 | { |
| 869 | struct net_local *lp = netdev_priv(dev); |
| 870 | if (lp->use_dma) |
| 871 | return (lp->isa_config & ANY_ISA_DMA)? RX_DMA_ENBL : 0; |
| 872 | else |
| 873 | return 0; |
| 874 | } |
| 875 | |
| 876 | static int |
| 877 | dma_busctl(struct net_device *dev) |
| 878 | { |
| 879 | int retval = 0; |
| 880 | struct net_local *lp = netdev_priv(dev); |
| 881 | if (lp->use_dma) { |
| 882 | if (lp->isa_config & ANY_ISA_DMA) |
| 883 | retval |= RESET_RX_DMA; /* Reset the DMA pointer */ |
| 884 | if (lp->isa_config & DMA_BURST) |
| 885 | retval |= DMA_BURST_MODE; /* Does ISA config specify DMA burst ? */ |
| 886 | if (lp->dmasize == 64) |
| 887 | retval |= RX_DMA_SIZE_64K; /* did they ask for 64K? */ |
| 888 | retval |= MEMORY_ON; /* we need memory enabled to use DMA. */ |
| 889 | } |
| 890 | return retval; |
| 891 | } |
| 892 | |
| 893 | static void |
| 894 | dma_rx(struct net_device *dev) |
| 895 | { |
| 896 | struct net_local *lp = netdev_priv(dev); |
| 897 | struct sk_buff *skb; |
| 898 | int status, length; |
| 899 | unsigned char *bp = lp->rx_dma_ptr; |
| 900 | |
| 901 | status = bp[0] + (bp[1]<<8); |
| 902 | length = bp[2] + (bp[3]<<8); |
| 903 | bp += 4; |
| 904 | if (net_debug > 5) { |
| 905 | printk( "%s: receiving DMA packet at %lx, status %x, length %x\n", |
| 906 | dev->name, (unsigned long)bp, status, length); |
| 907 | } |
| 908 | if ((status & RX_OK) == 0) { |
Kulikov Vasiliy | 661a16c | 2010-07-05 02:13:15 +0000 | [diff] [blame] | 909 | count_rx_errors(status, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 910 | goto skip_this_frame; |
| 911 | } |
| 912 | |
| 913 | /* Malloc up new buffer. */ |
| 914 | skb = dev_alloc_skb(length + 2); |
| 915 | if (skb == NULL) { |
| 916 | if (net_debug) /* I don't think we want to do this to a stressed system */ |
| 917 | printk("%s: Memory squeeze, dropping packet.\n", dev->name); |
Kulikov Vasiliy | 661a16c | 2010-07-05 02:13:15 +0000 | [diff] [blame] | 918 | dev->stats.rx_dropped++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 919 | |
| 920 | /* AKPM: advance bp to the next frame */ |
| 921 | skip_this_frame: |
| 922 | bp += (length + 3) & ~3; |
| 923 | if (bp >= lp->end_dma_buff) bp -= lp->dmasize*1024; |
| 924 | lp->rx_dma_ptr = bp; |
| 925 | return; |
| 926 | } |
| 927 | skb_reserve(skb, 2); /* longword align L3 header */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 928 | |
| 929 | if (bp + length > lp->end_dma_buff) { |
| 930 | int semi_cnt = lp->end_dma_buff - bp; |
| 931 | memcpy(skb_put(skb,semi_cnt), bp, semi_cnt); |
| 932 | memcpy(skb_put(skb,length - semi_cnt), lp->dma_buff, |
| 933 | length - semi_cnt); |
| 934 | } else { |
| 935 | memcpy(skb_put(skb,length), bp, length); |
| 936 | } |
| 937 | bp += (length + 3) & ~3; |
| 938 | if (bp >= lp->end_dma_buff) bp -= lp->dmasize*1024; |
| 939 | lp->rx_dma_ptr = bp; |
| 940 | |
| 941 | if (net_debug > 3) { |
| 942 | printk( "%s: received %d byte DMA packet of type %x\n", |
| 943 | dev->name, length, |
| 944 | (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]); |
| 945 | } |
| 946 | skb->protocol=eth_type_trans(skb,dev); |
| 947 | netif_rx(skb); |
Kulikov Vasiliy | 661a16c | 2010-07-05 02:13:15 +0000 | [diff] [blame] | 948 | dev->stats.rx_packets++; |
| 949 | dev->stats.rx_bytes += length; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 950 | } |
| 951 | |
| 952 | #endif /* ALLOW_DMA */ |
| 953 | |
Hannes Eder | dac499f | 2008-12-25 23:56:45 -0800 | [diff] [blame] | 954 | static void __init reset_chip(struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 955 | { |
Gilles Chanteperdrix | 0ac4ed9 | 2008-09-26 15:44:43 +0100 | [diff] [blame] | 956 | #if !defined(CONFIG_MACH_MX31ADS) |
Domenico Andreoli | d181a61 | 2011-03-14 03:46:53 +0000 | [diff] [blame] | 957 | #if !defined(CS89x0_NONISA_IRQ) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 958 | struct net_local *lp = netdev_priv(dev); |
| 959 | int ioaddr = dev->base_addr; |
Domenico Andreoli | d181a61 | 2011-03-14 03:46:53 +0000 | [diff] [blame] | 960 | #endif /* CS89x0_NONISA_IRQ */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 961 | int reset_start_time; |
| 962 | |
| 963 | writereg(dev, PP_SelfCTL, readreg(dev, PP_SelfCTL) | POWER_ON_RESET); |
| 964 | |
| 965 | /* wait 30 ms */ |
| 966 | msleep(30); |
| 967 | |
Domenico Andreoli | d181a61 | 2011-03-14 03:46:53 +0000 | [diff] [blame] | 968 | #if !defined(CS89x0_NONISA_IRQ) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 969 | if (lp->chip_type != CS8900) { |
| 970 | /* Hardware problem requires PNP registers to be reconfigured after a reset */ |
Lennert Buytenhek | fc8c7d7 | 2006-01-08 01:01:08 -0800 | [diff] [blame] | 971 | writeword(ioaddr, ADD_PORT, PP_CS8920_ISAINT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 972 | outb(dev->irq, ioaddr + DATA_PORT); |
| 973 | outb(0, ioaddr + DATA_PORT + 1); |
| 974 | |
Lennert Buytenhek | fc8c7d7 | 2006-01-08 01:01:08 -0800 | [diff] [blame] | 975 | writeword(ioaddr, ADD_PORT, PP_CS8920_ISAMemB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 976 | outb((dev->mem_start >> 16) & 0xff, ioaddr + DATA_PORT); |
| 977 | outb((dev->mem_start >> 8) & 0xff, ioaddr + DATA_PORT + 1); |
| 978 | } |
Domenico Andreoli | d181a61 | 2011-03-14 03:46:53 +0000 | [diff] [blame] | 979 | #endif /* CS89x0_NONISA_IRQ */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 980 | |
| 981 | /* Wait until the chip is reset */ |
| 982 | reset_start_time = jiffies; |
| 983 | while( (readreg(dev, PP_SelfST) & INIT_DONE) == 0 && jiffies - reset_start_time < 2) |
| 984 | ; |
Gilles Chanteperdrix | 0ac4ed9 | 2008-09-26 15:44:43 +0100 | [diff] [blame] | 985 | #endif /* !CONFIG_MACH_MX31ADS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 986 | } |
| 987 | |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 988 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 989 | static void |
| 990 | control_dc_dc(struct net_device *dev, int on_not_off) |
| 991 | { |
| 992 | struct net_local *lp = netdev_priv(dev); |
| 993 | unsigned int selfcontrol; |
| 994 | int timenow = jiffies; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 995 | /* control the DC to DC convertor in the SelfControl register. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 996 | Note: This is hooked up to a general purpose pin, might not |
| 997 | always be a DC to DC convertor. */ |
| 998 | |
| 999 | selfcontrol = HCB1_ENBL; /* Enable the HCB1 bit as an output */ |
| 1000 | if (((lp->adapter_cnf & A_CNF_DC_DC_POLARITY) != 0) ^ on_not_off) |
| 1001 | selfcontrol |= HCB1; |
| 1002 | else |
| 1003 | selfcontrol &= ~HCB1; |
| 1004 | writereg(dev, PP_SelfCTL, selfcontrol); |
| 1005 | |
| 1006 | /* Wait for the DC/DC converter to power up - 500ms */ |
| 1007 | while (jiffies - timenow < HZ) |
| 1008 | ; |
| 1009 | } |
| 1010 | |
| 1011 | #define DETECTED_NONE 0 |
| 1012 | #define DETECTED_RJ45H 1 |
| 1013 | #define DETECTED_RJ45F 2 |
| 1014 | #define DETECTED_AUI 3 |
| 1015 | #define DETECTED_BNC 4 |
| 1016 | |
| 1017 | static int |
| 1018 | detect_tp(struct net_device *dev) |
| 1019 | { |
| 1020 | struct net_local *lp = netdev_priv(dev); |
| 1021 | int timenow = jiffies; |
| 1022 | int fdx; |
| 1023 | |
| 1024 | if (net_debug > 1) printk("%s: Attempting TP\n", dev->name); |
| 1025 | |
| 1026 | /* If connected to another full duplex capable 10-Base-T card the link pulses |
| 1027 | seem to be lost when the auto detect bit in the LineCTL is set. |
| 1028 | To overcome this the auto detect bit will be cleared whilst testing the |
| 1029 | 10-Base-T interface. This would not be necessary for the sparrow chip but |
| 1030 | is simpler to do it anyway. */ |
| 1031 | writereg(dev, PP_LineCTL, lp->linectl &~ AUI_ONLY); |
| 1032 | control_dc_dc(dev, 0); |
| 1033 | |
| 1034 | /* Delay for the hardware to work out if the TP cable is present - 150ms */ |
| 1035 | for (timenow = jiffies; jiffies - timenow < 15; ) |
| 1036 | ; |
| 1037 | if ((readreg(dev, PP_LineST) & LINK_OK) == 0) |
| 1038 | return DETECTED_NONE; |
| 1039 | |
| 1040 | if (lp->chip_type == CS8900) { |
| 1041 | switch (lp->force & 0xf0) { |
| 1042 | #if 0 |
| 1043 | case FORCE_AUTO: |
| 1044 | printk("%s: cs8900 doesn't autonegotiate\n",dev->name); |
| 1045 | return DETECTED_NONE; |
| 1046 | #endif |
| 1047 | /* CS8900 doesn't support AUTO, change to HALF*/ |
| 1048 | case FORCE_AUTO: |
| 1049 | lp->force &= ~FORCE_AUTO; |
| 1050 | lp->force |= FORCE_HALF; |
| 1051 | break; |
| 1052 | case FORCE_HALF: |
| 1053 | break; |
| 1054 | case FORCE_FULL: |
| 1055 | writereg(dev, PP_TestCTL, readreg(dev, PP_TestCTL) | FDX_8900); |
| 1056 | break; |
| 1057 | } |
| 1058 | fdx = readreg(dev, PP_TestCTL) & FDX_8900; |
| 1059 | } else { |
| 1060 | switch (lp->force & 0xf0) { |
| 1061 | case FORCE_AUTO: |
| 1062 | lp->auto_neg_cnf = AUTO_NEG_ENABLE; |
| 1063 | break; |
| 1064 | case FORCE_HALF: |
| 1065 | lp->auto_neg_cnf = 0; |
| 1066 | break; |
| 1067 | case FORCE_FULL: |
| 1068 | lp->auto_neg_cnf = RE_NEG_NOW | ALLOW_FDX; |
| 1069 | break; |
| 1070 | } |
| 1071 | |
| 1072 | writereg(dev, PP_AutoNegCTL, lp->auto_neg_cnf & AUTO_NEG_MASK); |
| 1073 | |
| 1074 | if ((lp->auto_neg_cnf & AUTO_NEG_BITS) == AUTO_NEG_ENABLE) { |
| 1075 | printk(KERN_INFO "%s: negotiating duplex...\n",dev->name); |
| 1076 | while (readreg(dev, PP_AutoNegST) & AUTO_NEG_BUSY) { |
| 1077 | if (jiffies - timenow > 4000) { |
| 1078 | printk(KERN_ERR "**** Full / half duplex auto-negotiation timed out ****\n"); |
| 1079 | break; |
| 1080 | } |
| 1081 | } |
| 1082 | } |
| 1083 | fdx = readreg(dev, PP_AutoNegST) & FDX_ACTIVE; |
| 1084 | } |
| 1085 | if (fdx) |
| 1086 | return DETECTED_RJ45F; |
| 1087 | else |
| 1088 | return DETECTED_RJ45H; |
| 1089 | } |
| 1090 | |
| 1091 | /* send a test packet - return true if carrier bits are ok */ |
| 1092 | static int |
| 1093 | send_test_pkt(struct net_device *dev) |
| 1094 | { |
| 1095 | char test_packet[] = { 0,0,0,0,0,0, 0,0,0,0,0,0, |
| 1096 | 0, 46, /* A 46 in network order */ |
| 1097 | 0, 0, /* DSAP=0 & SSAP=0 fields */ |
| 1098 | 0xf3, 0 /* Control (Test Req + P bit set) */ }; |
| 1099 | long timenow = jiffies; |
| 1100 | |
| 1101 | writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_TX_ON); |
| 1102 | |
| 1103 | memcpy(test_packet, dev->dev_addr, ETH_ALEN); |
| 1104 | memcpy(test_packet+ETH_ALEN, dev->dev_addr, ETH_ALEN); |
| 1105 | |
Lennert Buytenhek | 974dffc | 2006-01-08 01:01:06 -0800 | [diff] [blame] | 1106 | writeword(dev->base_addr, TX_CMD_PORT, TX_AFTER_ALL); |
| 1107 | writeword(dev->base_addr, TX_LEN_PORT, ETH_ZLEN); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1108 | |
| 1109 | /* Test to see if the chip has allocated memory for the packet */ |
| 1110 | while (jiffies - timenow < 5) |
| 1111 | if (readreg(dev, PP_BusST) & READY_FOR_TX_NOW) |
| 1112 | break; |
| 1113 | if (jiffies - timenow >= 5) |
| 1114 | return 0; /* this shouldn't happen */ |
| 1115 | |
| 1116 | /* Write the contents of the packet */ |
Lennert Buytenhek | 084f746 | 2006-01-08 01:01:12 -0800 | [diff] [blame] | 1117 | writewords(dev->base_addr, TX_FRAME_PORT,test_packet,(ETH_ZLEN+1) >>1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1118 | |
| 1119 | if (net_debug > 1) printk("Sending test packet "); |
| 1120 | /* wait a couple of jiffies for packet to be received */ |
| 1121 | for (timenow = jiffies; jiffies - timenow < 3; ) |
| 1122 | ; |
| 1123 | if ((readreg(dev, PP_TxEvent) & TX_SEND_OK_BITS) == TX_OK) { |
| 1124 | if (net_debug > 1) printk("succeeded\n"); |
| 1125 | return 1; |
| 1126 | } |
| 1127 | if (net_debug > 1) printk("failed\n"); |
| 1128 | return 0; |
| 1129 | } |
| 1130 | |
| 1131 | |
| 1132 | static int |
| 1133 | detect_aui(struct net_device *dev) |
| 1134 | { |
| 1135 | struct net_local *lp = netdev_priv(dev); |
| 1136 | |
| 1137 | if (net_debug > 1) printk("%s: Attempting AUI\n", dev->name); |
| 1138 | control_dc_dc(dev, 0); |
| 1139 | |
| 1140 | writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY); |
| 1141 | |
| 1142 | if (send_test_pkt(dev)) |
| 1143 | return DETECTED_AUI; |
| 1144 | else |
| 1145 | return DETECTED_NONE; |
| 1146 | } |
| 1147 | |
| 1148 | static int |
| 1149 | detect_bnc(struct net_device *dev) |
| 1150 | { |
| 1151 | struct net_local *lp = netdev_priv(dev); |
| 1152 | |
| 1153 | if (net_debug > 1) printk("%s: Attempting BNC\n", dev->name); |
| 1154 | control_dc_dc(dev, 1); |
| 1155 | |
| 1156 | writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY); |
| 1157 | |
| 1158 | if (send_test_pkt(dev)) |
| 1159 | return DETECTED_BNC; |
| 1160 | else |
| 1161 | return DETECTED_NONE; |
| 1162 | } |
| 1163 | |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1164 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1165 | static void |
| 1166 | write_irq(struct net_device *dev, int chip_type, int irq) |
| 1167 | { |
| 1168 | int i; |
| 1169 | |
| 1170 | if (chip_type == CS8900) { |
| 1171 | /* Search the mapping table for the corresponding IRQ pin. */ |
Denis Cheng | ff8ac60 | 2007-09-02 18:30:18 +0800 | [diff] [blame] | 1172 | for (i = 0; i != ARRAY_SIZE(cs8900_irq_map); i++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1173 | if (cs8900_irq_map[i] == irq) |
| 1174 | break; |
| 1175 | /* Not found */ |
Denis Cheng | ff8ac60 | 2007-09-02 18:30:18 +0800 | [diff] [blame] | 1176 | if (i == ARRAY_SIZE(cs8900_irq_map)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1177 | i = 3; |
| 1178 | writereg(dev, PP_CS8900_ISAINT, i); |
| 1179 | } else { |
| 1180 | writereg(dev, PP_CS8920_ISAINT, irq); |
| 1181 | } |
| 1182 | } |
| 1183 | |
| 1184 | /* Open/initialize the board. This is called (in the current kernel) |
| 1185 | sometime after booting when the 'ifconfig' program is run. |
| 1186 | |
| 1187 | This routine should set everything up anew at each open, even |
| 1188 | registers that "should" only need to be set once at boot, so that |
| 1189 | there is non-reboot way to recover if something goes wrong. |
| 1190 | */ |
| 1191 | |
| 1192 | /* AKPM: do we need to do any locking here? */ |
| 1193 | |
| 1194 | static int |
| 1195 | net_open(struct net_device *dev) |
| 1196 | { |
| 1197 | struct net_local *lp = netdev_priv(dev); |
| 1198 | int result = 0; |
| 1199 | int i; |
| 1200 | int ret; |
| 1201 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1202 | if (dev->irq < 2) { |
| 1203 | /* Allow interrupts to be generated by the chip */ |
| 1204 | /* Cirrus' release had this: */ |
| 1205 | #if 0 |
| 1206 | writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ ); |
| 1207 | #endif |
| 1208 | /* And 2.3.47 had this: */ |
| 1209 | writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON); |
| 1210 | |
| 1211 | for (i = 2; i < CS8920_NO_INTS; i++) { |
| 1212 | if ((1 << i) & lp->irq_map) { |
| 1213 | if (request_irq(i, net_interrupt, 0, dev->name, dev) == 0) { |
| 1214 | dev->irq = i; |
| 1215 | write_irq(dev, lp->chip_type, i); |
| 1216 | /* writereg(dev, PP_BufCFG, GENERATE_SW_INTERRUPT); */ |
| 1217 | break; |
| 1218 | } |
| 1219 | } |
| 1220 | } |
| 1221 | |
| 1222 | if (i >= CS8920_NO_INTS) { |
| 1223 | writereg(dev, PP_BusCTL, 0); /* disable interrupts. */ |
| 1224 | printk(KERN_ERR "cs89x0: can't get an interrupt\n"); |
| 1225 | ret = -EAGAIN; |
| 1226 | goto bad_out; |
| 1227 | } |
| 1228 | } |
| 1229 | else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1230 | { |
Gilles Chanteperdrix | 0ac4ed9 | 2008-09-26 15:44:43 +0100 | [diff] [blame] | 1231 | #ifndef CONFIG_CS89x0_NONISA_IRQ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1232 | if (((1 << dev->irq) & lp->irq_map) == 0) { |
| 1233 | printk(KERN_ERR "%s: IRQ %d is not in our map of allowable IRQs, which is %x\n", |
| 1234 | dev->name, dev->irq, lp->irq_map); |
| 1235 | ret = -EAGAIN; |
| 1236 | goto bad_out; |
| 1237 | } |
| 1238 | #endif |
| 1239 | /* FIXME: Cirrus' release had this: */ |
| 1240 | writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ ); |
| 1241 | /* And 2.3.47 had this: */ |
| 1242 | #if 0 |
| 1243 | writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON); |
| 1244 | #endif |
| 1245 | write_irq(dev, lp->chip_type, dev->irq); |
Joe Perches | a0607fd | 2009-11-18 23:29:17 -0800 | [diff] [blame] | 1246 | ret = request_irq(dev->irq, net_interrupt, 0, dev->name, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1247 | if (ret) { |
Mark Brown | 569b789 | 2010-01-07 00:53:05 -0800 | [diff] [blame] | 1248 | printk(KERN_ERR "cs89x0: request_irq(%d) failed\n", dev->irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1249 | goto bad_out; |
| 1250 | } |
| 1251 | } |
| 1252 | |
| 1253 | #if ALLOW_DMA |
| 1254 | if (lp->use_dma) { |
| 1255 | if (lp->isa_config & ANY_ISA_DMA) { |
| 1256 | unsigned long flags; |
| 1257 | lp->dma_buff = (unsigned char *)__get_dma_pages(GFP_KERNEL, |
| 1258 | get_order(lp->dmasize * 1024)); |
| 1259 | |
| 1260 | if (!lp->dma_buff) { |
| 1261 | printk(KERN_ERR "%s: cannot get %dK memory for DMA\n", dev->name, lp->dmasize); |
| 1262 | goto release_irq; |
| 1263 | } |
| 1264 | if (net_debug > 1) { |
| 1265 | printk( "%s: dma %lx %lx\n", |
| 1266 | dev->name, |
| 1267 | (unsigned long)lp->dma_buff, |
| 1268 | (unsigned long)isa_virt_to_bus(lp->dma_buff)); |
| 1269 | } |
| 1270 | if ((unsigned long) lp->dma_buff >= MAX_DMA_ADDRESS || |
| 1271 | !dma_page_eq(lp->dma_buff, lp->dma_buff+lp->dmasize*1024-1)) { |
| 1272 | printk(KERN_ERR "%s: not usable as DMA buffer\n", dev->name); |
| 1273 | goto release_irq; |
| 1274 | } |
| 1275 | memset(lp->dma_buff, 0, lp->dmasize * 1024); /* Why? */ |
| 1276 | if (request_dma(dev->dma, dev->name)) { |
| 1277 | printk(KERN_ERR "%s: cannot get dma channel %d\n", dev->name, dev->dma); |
| 1278 | goto release_irq; |
| 1279 | } |
| 1280 | write_dma(dev, lp->chip_type, dev->dma); |
| 1281 | lp->rx_dma_ptr = lp->dma_buff; |
| 1282 | lp->end_dma_buff = lp->dma_buff + lp->dmasize*1024; |
| 1283 | spin_lock_irqsave(&lp->lock, flags); |
| 1284 | disable_dma(dev->dma); |
| 1285 | clear_dma_ff(dev->dma); |
Julia Lawall | ef0657c | 2009-07-06 19:09:50 -0700 | [diff] [blame] | 1286 | set_dma_mode(dev->dma, DMA_RX_MODE); /* auto_init as well */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1287 | set_dma_addr(dev->dma, isa_virt_to_bus(lp->dma_buff)); |
| 1288 | set_dma_count(dev->dma, lp->dmasize*1024); |
| 1289 | enable_dma(dev->dma); |
| 1290 | spin_unlock_irqrestore(&lp->lock, flags); |
| 1291 | } |
| 1292 | } |
| 1293 | #endif /* ALLOW_DMA */ |
| 1294 | |
| 1295 | /* set the Ethernet address */ |
| 1296 | for (i=0; i < ETH_ALEN/2; i++) |
| 1297 | writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8)); |
| 1298 | |
| 1299 | /* while we're testing the interface, leave interrupts disabled */ |
| 1300 | writereg(dev, PP_BusCTL, MEMORY_ON); |
| 1301 | |
| 1302 | /* Set the LineCTL quintuplet based on adapter configuration read from EEPROM */ |
| 1303 | if ((lp->adapter_cnf & A_CNF_EXTND_10B_2) && (lp->adapter_cnf & A_CNF_LOW_RX_SQUELCH)) |
| 1304 | lp->linectl = LOW_RX_SQUELCH; |
| 1305 | else |
| 1306 | lp->linectl = 0; |
| 1307 | |
| 1308 | /* check to make sure that they have the "right" hardware available */ |
| 1309 | switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) { |
| 1310 | case A_CNF_MEDIA_10B_T: result = lp->adapter_cnf & A_CNF_10B_T; break; |
| 1311 | case A_CNF_MEDIA_AUI: result = lp->adapter_cnf & A_CNF_AUI; break; |
| 1312 | case A_CNF_MEDIA_10B_2: result = lp->adapter_cnf & A_CNF_10B_2; break; |
| 1313 | default: result = lp->adapter_cnf & (A_CNF_10B_T | A_CNF_AUI | A_CNF_10B_2); |
| 1314 | } |
| 1315 | if (!result) { |
| 1316 | printk(KERN_ERR "%s: EEPROM is configured for unavailable media\n", dev->name); |
Wang Chen | 17a9440 | 2008-05-30 11:18:55 +0800 | [diff] [blame] | 1317 | release_dma: |
| 1318 | #if ALLOW_DMA |
| 1319 | free_dma(dev->dma); |
Wang Chen | 17a9440 | 2008-05-30 11:18:55 +0800 | [diff] [blame] | 1320 | release_irq: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1321 | release_dma_buff(lp); |
| 1322 | #endif |
| 1323 | writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) & ~(SERIAL_TX_ON | SERIAL_RX_ON)); |
| 1324 | free_irq(dev->irq, dev); |
| 1325 | ret = -EAGAIN; |
| 1326 | goto bad_out; |
| 1327 | } |
| 1328 | |
| 1329 | /* set the hardware to the configured choice */ |
| 1330 | switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) { |
| 1331 | case A_CNF_MEDIA_10B_T: |
| 1332 | result = detect_tp(dev); |
| 1333 | if (result==DETECTED_NONE) { |
| 1334 | printk(KERN_WARNING "%s: 10Base-T (RJ-45) has no cable\n", dev->name); |
| 1335 | if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */ |
| 1336 | result = DETECTED_RJ45H; /* Yes! I don't care if I see a link pulse */ |
| 1337 | } |
| 1338 | break; |
| 1339 | case A_CNF_MEDIA_AUI: |
| 1340 | result = detect_aui(dev); |
| 1341 | if (result==DETECTED_NONE) { |
| 1342 | printk(KERN_WARNING "%s: 10Base-5 (AUI) has no cable\n", dev->name); |
| 1343 | if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */ |
| 1344 | result = DETECTED_AUI; /* Yes! I don't care if I see a carrrier */ |
| 1345 | } |
| 1346 | break; |
| 1347 | case A_CNF_MEDIA_10B_2: |
| 1348 | result = detect_bnc(dev); |
| 1349 | if (result==DETECTED_NONE) { |
| 1350 | printk(KERN_WARNING "%s: 10Base-2 (BNC) has no cable\n", dev->name); |
| 1351 | if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */ |
| 1352 | result = DETECTED_BNC; /* Yes! I don't care if I can xmit a packet */ |
| 1353 | } |
| 1354 | break; |
| 1355 | case A_CNF_MEDIA_AUTO: |
| 1356 | writereg(dev, PP_LineCTL, lp->linectl | AUTO_AUI_10BASET); |
| 1357 | if (lp->adapter_cnf & A_CNF_10B_T) |
| 1358 | if ((result = detect_tp(dev)) != DETECTED_NONE) |
| 1359 | break; |
| 1360 | if (lp->adapter_cnf & A_CNF_AUI) |
| 1361 | if ((result = detect_aui(dev)) != DETECTED_NONE) |
| 1362 | break; |
| 1363 | if (lp->adapter_cnf & A_CNF_10B_2) |
| 1364 | if ((result = detect_bnc(dev)) != DETECTED_NONE) |
| 1365 | break; |
| 1366 | printk(KERN_ERR "%s: no media detected\n", dev->name); |
Wang Chen | 17a9440 | 2008-05-30 11:18:55 +0800 | [diff] [blame] | 1367 | goto release_dma; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1368 | } |
| 1369 | switch(result) { |
| 1370 | case DETECTED_NONE: |
| 1371 | printk(KERN_ERR "%s: no network cable attached to configured media\n", dev->name); |
Wang Chen | 17a9440 | 2008-05-30 11:18:55 +0800 | [diff] [blame] | 1372 | goto release_dma; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1373 | case DETECTED_RJ45H: |
| 1374 | printk(KERN_INFO "%s: using half-duplex 10Base-T (RJ-45)\n", dev->name); |
| 1375 | break; |
| 1376 | case DETECTED_RJ45F: |
| 1377 | printk(KERN_INFO "%s: using full-duplex 10Base-T (RJ-45)\n", dev->name); |
| 1378 | break; |
| 1379 | case DETECTED_AUI: |
| 1380 | printk(KERN_INFO "%s: using 10Base-5 (AUI)\n", dev->name); |
| 1381 | break; |
| 1382 | case DETECTED_BNC: |
| 1383 | printk(KERN_INFO "%s: using 10Base-2 (BNC)\n", dev->name); |
| 1384 | break; |
| 1385 | } |
| 1386 | |
| 1387 | /* Turn on both receive and transmit operations */ |
| 1388 | writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_RX_ON | SERIAL_TX_ON); |
| 1389 | |
| 1390 | /* Receive only error free packets addressed to this card */ |
| 1391 | lp->rx_mode = 0; |
| 1392 | writereg(dev, PP_RxCTL, DEF_RX_ACCEPT); |
| 1393 | |
| 1394 | lp->curr_rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL; |
| 1395 | |
| 1396 | if (lp->isa_config & STREAM_TRANSFER) |
| 1397 | lp->curr_rx_cfg |= RX_STREAM_ENBL; |
| 1398 | #if ALLOW_DMA |
| 1399 | set_dma_cfg(dev); |
| 1400 | #endif |
| 1401 | writereg(dev, PP_RxCFG, lp->curr_rx_cfg); |
| 1402 | |
| 1403 | writereg(dev, PP_TxCFG, TX_LOST_CRS_ENBL | TX_SQE_ERROR_ENBL | TX_OK_ENBL | |
| 1404 | TX_LATE_COL_ENBL | TX_JBR_ENBL | TX_ANY_COL_ENBL | TX_16_COL_ENBL); |
| 1405 | |
| 1406 | writereg(dev, PP_BufCFG, READY_FOR_TX_ENBL | RX_MISS_COUNT_OVRFLOW_ENBL | |
| 1407 | #if ALLOW_DMA |
| 1408 | dma_bufcfg(dev) | |
| 1409 | #endif |
| 1410 | TX_COL_COUNT_OVRFLOW_ENBL | TX_UNDERRUN_ENBL); |
| 1411 | |
| 1412 | /* now that we've got our act together, enable everything */ |
| 1413 | writereg(dev, PP_BusCTL, ENABLE_IRQ |
| 1414 | | (dev->mem_start?MEMORY_ON : 0) /* turn memory on */ |
| 1415 | #if ALLOW_DMA |
| 1416 | | dma_busctl(dev) |
| 1417 | #endif |
| 1418 | ); |
| 1419 | netif_start_queue(dev); |
| 1420 | if (net_debug > 1) |
| 1421 | printk("cs89x0: net_open() succeeded\n"); |
| 1422 | return 0; |
| 1423 | bad_out: |
| 1424 | return ret; |
| 1425 | } |
| 1426 | |
| 1427 | static void net_timeout(struct net_device *dev) |
| 1428 | { |
| 1429 | /* If we get here, some higher level has decided we are broken. |
| 1430 | There should really be a "kick me" function call instead. */ |
| 1431 | if (net_debug > 0) printk("%s: transmit timed out, %s?\n", dev->name, |
| 1432 | tx_done(dev) ? "IRQ conflict ?" : "network cable problem"); |
| 1433 | /* Try to restart the adaptor. */ |
| 1434 | netif_wake_queue(dev); |
| 1435 | } |
| 1436 | |
Stephen Hemminger | 61357325 | 2009-08-31 19:50:58 +0000 | [diff] [blame] | 1437 | static netdev_tx_t net_send_packet(struct sk_buff *skb,struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1438 | { |
| 1439 | struct net_local *lp = netdev_priv(dev); |
Dongdong Deng | 79fbe13 | 2009-07-12 20:27:06 +0000 | [diff] [blame] | 1440 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1441 | |
| 1442 | if (net_debug > 3) { |
| 1443 | printk("%s: sent %d byte packet of type %x\n", |
| 1444 | dev->name, skb->len, |
| 1445 | (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]); |
| 1446 | } |
| 1447 | |
| 1448 | /* keep the upload from being interrupted, since we |
| 1449 | ask the chip to start transmitting before the |
| 1450 | whole packet has been completely uploaded. */ |
| 1451 | |
Dongdong Deng | 79fbe13 | 2009-07-12 20:27:06 +0000 | [diff] [blame] | 1452 | spin_lock_irqsave(&lp->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1453 | netif_stop_queue(dev); |
| 1454 | |
| 1455 | /* initiate a transmit sequence */ |
Lennert Buytenhek | 974dffc | 2006-01-08 01:01:06 -0800 | [diff] [blame] | 1456 | writeword(dev->base_addr, TX_CMD_PORT, lp->send_cmd); |
| 1457 | writeword(dev->base_addr, TX_LEN_PORT, skb->len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1458 | |
| 1459 | /* Test to see if the chip has allocated memory for the packet */ |
| 1460 | if ((readreg(dev, PP_BusST) & READY_FOR_TX_NOW) == 0) { |
| 1461 | /* |
| 1462 | * Gasp! It hasn't. But that shouldn't happen since |
| 1463 | * we're waiting for TxOk, so return 1 and requeue this packet. |
| 1464 | */ |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1465 | |
Dongdong Deng | 79fbe13 | 2009-07-12 20:27:06 +0000 | [diff] [blame] | 1466 | spin_unlock_irqrestore(&lp->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1467 | if (net_debug) printk("cs89x0: Tx buffer not free!\n"); |
Patrick McHardy | 5b54814 | 2009-06-12 06:22:29 +0000 | [diff] [blame] | 1468 | return NETDEV_TX_BUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1469 | } |
| 1470 | /* Write the contents of the packet */ |
Lennert Buytenhek | 084f746 | 2006-01-08 01:01:12 -0800 | [diff] [blame] | 1471 | writewords(dev->base_addr, TX_FRAME_PORT,skb->data,(skb->len+1) >>1); |
Dongdong Deng | 79fbe13 | 2009-07-12 20:27:06 +0000 | [diff] [blame] | 1472 | spin_unlock_irqrestore(&lp->lock, flags); |
Kulikov Vasiliy | 661a16c | 2010-07-05 02:13:15 +0000 | [diff] [blame] | 1473 | dev->stats.tx_bytes += skb->len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1474 | dev_kfree_skb (skb); |
| 1475 | |
| 1476 | /* |
| 1477 | * We DO NOT call netif_wake_queue() here. |
| 1478 | * We also DO NOT call netif_start_queue(). |
| 1479 | * |
| 1480 | * Either of these would cause another bottom half run through |
| 1481 | * net_send_packet() before this packet has fully gone out. That causes |
| 1482 | * us to hit the "Gasp!" above and the send is rescheduled. it runs like |
| 1483 | * a dog. We just return and wait for the Tx completion interrupt handler |
| 1484 | * to restart the netdevice layer |
| 1485 | */ |
| 1486 | |
Patrick McHardy | 6ed1065 | 2009-06-23 06:03:08 +0000 | [diff] [blame] | 1487 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1488 | } |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1489 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1490 | /* The typical workload of the driver: |
| 1491 | Handle the network interface interrupts. */ |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1492 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1493 | static irqreturn_t net_interrupt(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1494 | { |
| 1495 | struct net_device *dev = dev_id; |
| 1496 | struct net_local *lp; |
| 1497 | int ioaddr, status; |
| 1498 | int handled = 0; |
| 1499 | |
| 1500 | ioaddr = dev->base_addr; |
| 1501 | lp = netdev_priv(dev); |
| 1502 | |
| 1503 | /* we MUST read all the events out of the ISQ, otherwise we'll never |
| 1504 | get interrupted again. As a consequence, we can't have any limit |
| 1505 | on the number of times we loop in the interrupt handler. The |
| 1506 | hardware guarantees that eventually we'll run out of events. Of |
| 1507 | course, if you're on a slow machine, and packets are arriving |
| 1508 | faster than you can read them off, you're screwed. Hasta la |
| 1509 | vista, baby! */ |
Lennert Buytenhek | 974dffc | 2006-01-08 01:01:06 -0800 | [diff] [blame] | 1510 | while ((status = readword(dev->base_addr, ISQ_PORT))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1511 | if (net_debug > 4)printk("%s: event=%04x\n", dev->name, status); |
| 1512 | handled = 1; |
| 1513 | switch(status & ISQ_EVENT_MASK) { |
| 1514 | case ISQ_RECEIVER_EVENT: |
| 1515 | /* Got a packet(s). */ |
| 1516 | net_rx(dev); |
| 1517 | break; |
| 1518 | case ISQ_TRANSMITTER_EVENT: |
Kulikov Vasiliy | 661a16c | 2010-07-05 02:13:15 +0000 | [diff] [blame] | 1519 | dev->stats.tx_packets++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1520 | netif_wake_queue(dev); /* Inform upper layers. */ |
| 1521 | if ((status & ( TX_OK | |
| 1522 | TX_LOST_CRS | |
| 1523 | TX_SQE_ERROR | |
| 1524 | TX_LATE_COL | |
| 1525 | TX_16_COL)) != TX_OK) { |
Kulikov Vasiliy | 661a16c | 2010-07-05 02:13:15 +0000 | [diff] [blame] | 1526 | if ((status & TX_OK) == 0) |
| 1527 | dev->stats.tx_errors++; |
| 1528 | if (status & TX_LOST_CRS) |
| 1529 | dev->stats.tx_carrier_errors++; |
| 1530 | if (status & TX_SQE_ERROR) |
| 1531 | dev->stats.tx_heartbeat_errors++; |
| 1532 | if (status & TX_LATE_COL) |
| 1533 | dev->stats.tx_window_errors++; |
| 1534 | if (status & TX_16_COL) |
| 1535 | dev->stats.tx_aborted_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1536 | } |
| 1537 | break; |
| 1538 | case ISQ_BUFFER_EVENT: |
| 1539 | if (status & READY_FOR_TX) { |
| 1540 | /* we tried to transmit a packet earlier, |
| 1541 | but inexplicably ran out of buffers. |
| 1542 | That shouldn't happen since we only ever |
| 1543 | load one packet. Shrug. Do the right |
| 1544 | thing anyway. */ |
| 1545 | netif_wake_queue(dev); /* Inform upper layers. */ |
| 1546 | } |
| 1547 | if (status & TX_UNDERRUN) { |
| 1548 | if (net_debug > 0) printk("%s: transmit underrun\n", dev->name); |
| 1549 | lp->send_underrun++; |
| 1550 | if (lp->send_underrun == 3) lp->send_cmd = TX_AFTER_381; |
| 1551 | else if (lp->send_underrun == 6) lp->send_cmd = TX_AFTER_ALL; |
| 1552 | /* transmit cycle is done, although |
| 1553 | frame wasn't transmitted - this |
| 1554 | avoids having to wait for the upper |
| 1555 | layers to timeout on us, in the |
| 1556 | event of a tx underrun */ |
| 1557 | netif_wake_queue(dev); /* Inform upper layers. */ |
| 1558 | } |
| 1559 | #if ALLOW_DMA |
| 1560 | if (lp->use_dma && (status & RX_DMA)) { |
| 1561 | int count = readreg(dev, PP_DmaFrameCnt); |
| 1562 | while(count) { |
| 1563 | if (net_debug > 5) |
| 1564 | printk("%s: receiving %d DMA frames\n", dev->name, count); |
| 1565 | if (net_debug > 2 && count >1) |
| 1566 | printk("%s: receiving %d DMA frames\n", dev->name, count); |
| 1567 | dma_rx(dev); |
| 1568 | if (--count == 0) |
| 1569 | count = readreg(dev, PP_DmaFrameCnt); |
| 1570 | if (net_debug > 2 && count > 0) |
| 1571 | printk("%s: continuing with %d DMA frames\n", dev->name, count); |
| 1572 | } |
| 1573 | } |
| 1574 | #endif |
| 1575 | break; |
| 1576 | case ISQ_RX_MISS_EVENT: |
Kulikov Vasiliy | 661a16c | 2010-07-05 02:13:15 +0000 | [diff] [blame] | 1577 | dev->stats.rx_missed_errors += (status >> 6); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1578 | break; |
| 1579 | case ISQ_TX_COL_EVENT: |
Kulikov Vasiliy | 661a16c | 2010-07-05 02:13:15 +0000 | [diff] [blame] | 1580 | dev->stats.collisions += (status >> 6); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1581 | break; |
| 1582 | } |
| 1583 | } |
| 1584 | return IRQ_RETVAL(handled); |
| 1585 | } |
| 1586 | |
| 1587 | static void |
Kulikov Vasiliy | 661a16c | 2010-07-05 02:13:15 +0000 | [diff] [blame] | 1588 | count_rx_errors(int status, struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1589 | { |
Kulikov Vasiliy | 661a16c | 2010-07-05 02:13:15 +0000 | [diff] [blame] | 1590 | dev->stats.rx_errors++; |
| 1591 | if (status & RX_RUNT) |
| 1592 | dev->stats.rx_length_errors++; |
| 1593 | if (status & RX_EXTRA_DATA) |
| 1594 | dev->stats.rx_length_errors++; |
| 1595 | if ((status & RX_CRC_ERROR) && !(status & (RX_EXTRA_DATA|RX_RUNT))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1596 | /* per str 172 */ |
Kulikov Vasiliy | 661a16c | 2010-07-05 02:13:15 +0000 | [diff] [blame] | 1597 | dev->stats.rx_crc_errors++; |
| 1598 | if (status & RX_DRIBBLE) |
| 1599 | dev->stats.rx_frame_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1600 | } |
| 1601 | |
| 1602 | /* We have a good packet(s), get it/them out of the buffers. */ |
| 1603 | static void |
| 1604 | net_rx(struct net_device *dev) |
| 1605 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1606 | struct sk_buff *skb; |
| 1607 | int status, length; |
| 1608 | |
| 1609 | int ioaddr = dev->base_addr; |
Lennert Buytenhek | fc8c7d7 | 2006-01-08 01:01:08 -0800 | [diff] [blame] | 1610 | status = readword(ioaddr, RX_FRAME_PORT); |
| 1611 | length = readword(ioaddr, RX_FRAME_PORT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1612 | |
| 1613 | if ((status & RX_OK) == 0) { |
Kulikov Vasiliy | 661a16c | 2010-07-05 02:13:15 +0000 | [diff] [blame] | 1614 | count_rx_errors(status, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1615 | return; |
| 1616 | } |
| 1617 | |
| 1618 | /* Malloc up new buffer. */ |
| 1619 | skb = dev_alloc_skb(length + 2); |
| 1620 | if (skb == NULL) { |
| 1621 | #if 0 /* Again, this seems a cruel thing to do */ |
| 1622 | printk(KERN_WARNING "%s: Memory squeeze, dropping packet.\n", dev->name); |
| 1623 | #endif |
Kulikov Vasiliy | 661a16c | 2010-07-05 02:13:15 +0000 | [diff] [blame] | 1624 | dev->stats.rx_dropped++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1625 | return; |
| 1626 | } |
| 1627 | skb_reserve(skb, 2); /* longword align L3 header */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1628 | |
Lennert Buytenhek | 084f746 | 2006-01-08 01:01:12 -0800 | [diff] [blame] | 1629 | readwords(ioaddr, RX_FRAME_PORT, skb_put(skb, length), length >> 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1630 | if (length & 1) |
Lennert Buytenhek | fc8c7d7 | 2006-01-08 01:01:08 -0800 | [diff] [blame] | 1631 | skb->data[length-1] = readword(ioaddr, RX_FRAME_PORT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1632 | |
| 1633 | if (net_debug > 3) { |
| 1634 | printk( "%s: received %d byte packet of type %x\n", |
| 1635 | dev->name, length, |
| 1636 | (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]); |
| 1637 | } |
| 1638 | |
| 1639 | skb->protocol=eth_type_trans(skb,dev); |
| 1640 | netif_rx(skb); |
Kulikov Vasiliy | 661a16c | 2010-07-05 02:13:15 +0000 | [diff] [blame] | 1641 | dev->stats.rx_packets++; |
| 1642 | dev->stats.rx_bytes += length; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1643 | } |
| 1644 | |
| 1645 | #if ALLOW_DMA |
| 1646 | static void release_dma_buff(struct net_local *lp) |
| 1647 | { |
| 1648 | if (lp->dma_buff) { |
| 1649 | free_pages((unsigned long)(lp->dma_buff), get_order(lp->dmasize * 1024)); |
| 1650 | lp->dma_buff = NULL; |
| 1651 | } |
| 1652 | } |
| 1653 | #endif |
| 1654 | |
| 1655 | /* The inverse routine to net_open(). */ |
| 1656 | static int |
| 1657 | net_close(struct net_device *dev) |
| 1658 | { |
| 1659 | #if ALLOW_DMA |
| 1660 | struct net_local *lp = netdev_priv(dev); |
| 1661 | #endif |
| 1662 | |
| 1663 | netif_stop_queue(dev); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1664 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1665 | writereg(dev, PP_RxCFG, 0); |
| 1666 | writereg(dev, PP_TxCFG, 0); |
| 1667 | writereg(dev, PP_BufCFG, 0); |
| 1668 | writereg(dev, PP_BusCTL, 0); |
| 1669 | |
| 1670 | free_irq(dev->irq, dev); |
| 1671 | |
| 1672 | #if ALLOW_DMA |
| 1673 | if (lp->use_dma && lp->dma) { |
| 1674 | free_dma(dev->dma); |
| 1675 | release_dma_buff(lp); |
| 1676 | } |
| 1677 | #endif |
| 1678 | |
| 1679 | /* Update the statistics here. */ |
| 1680 | return 0; |
| 1681 | } |
| 1682 | |
| 1683 | /* Get the current statistics. This may be called with the card open or |
| 1684 | closed. */ |
| 1685 | static struct net_device_stats * |
| 1686 | net_get_stats(struct net_device *dev) |
| 1687 | { |
| 1688 | struct net_local *lp = netdev_priv(dev); |
| 1689 | unsigned long flags; |
| 1690 | |
| 1691 | spin_lock_irqsave(&lp->lock, flags); |
| 1692 | /* Update the statistics from the device registers. */ |
Kulikov Vasiliy | 661a16c | 2010-07-05 02:13:15 +0000 | [diff] [blame] | 1693 | dev->stats.rx_missed_errors += (readreg(dev, PP_RxMiss) >> 6); |
| 1694 | dev->stats.collisions += (readreg(dev, PP_TxCol) >> 6); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1695 | spin_unlock_irqrestore(&lp->lock, flags); |
| 1696 | |
Kulikov Vasiliy | 661a16c | 2010-07-05 02:13:15 +0000 | [diff] [blame] | 1697 | return &dev->stats; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1698 | } |
| 1699 | |
| 1700 | static void set_multicast_list(struct net_device *dev) |
| 1701 | { |
| 1702 | struct net_local *lp = netdev_priv(dev); |
| 1703 | unsigned long flags; |
| 1704 | |
| 1705 | spin_lock_irqsave(&lp->lock, flags); |
| 1706 | if(dev->flags&IFF_PROMISC) |
| 1707 | { |
| 1708 | lp->rx_mode = RX_ALL_ACCEPT; |
| 1709 | } |
Jiri Pirko | e1d4447 | 2010-02-17 11:09:31 +0000 | [diff] [blame] | 1710 | else if ((dev->flags & IFF_ALLMULTI) || !netdev_mc_empty(dev)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1711 | { |
| 1712 | /* The multicast-accept list is initialized to accept-all, and we |
| 1713 | rely on higher-level filtering for now. */ |
| 1714 | lp->rx_mode = RX_MULTCAST_ACCEPT; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1715 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1716 | else |
| 1717 | lp->rx_mode = 0; |
| 1718 | |
| 1719 | writereg(dev, PP_RxCTL, DEF_RX_ACCEPT | lp->rx_mode); |
| 1720 | |
| 1721 | /* in promiscuous mode, we accept errored packets, so we have to enable interrupts on them also */ |
| 1722 | writereg(dev, PP_RxCFG, lp->curr_rx_cfg | |
| 1723 | (lp->rx_mode == RX_ALL_ACCEPT? (RX_CRC_ERROR_ENBL|RX_RUNT_ENBL|RX_EXTRA_DATA_ENBL) : 0)); |
| 1724 | spin_unlock_irqrestore(&lp->lock, flags); |
| 1725 | } |
| 1726 | |
| 1727 | |
| 1728 | static int set_mac_address(struct net_device *dev, void *p) |
| 1729 | { |
| 1730 | int i; |
| 1731 | struct sockaddr *addr = p; |
| 1732 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1733 | if (netif_running(dev)) |
| 1734 | return -EBUSY; |
| 1735 | |
| 1736 | memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); |
| 1737 | |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 1738 | if (net_debug) |
| 1739 | printk("%s: Setting MAC address to %pM.\n", |
| 1740 | dev->name, dev->dev_addr); |
| 1741 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1742 | /* set the Ethernet address */ |
| 1743 | for (i=0; i < ETH_ALEN/2; i++) |
| 1744 | writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8)); |
| 1745 | |
| 1746 | return 0; |
| 1747 | } |
| 1748 | |
| 1749 | #ifdef MODULE |
| 1750 | |
| 1751 | static struct net_device *dev_cs89x0; |
| 1752 | |
| 1753 | /* |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1754 | * Support the 'debug' module parm even if we're compiled for non-debug to |
| 1755 | * avoid breaking someone's startup scripts |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1756 | */ |
| 1757 | |
| 1758 | static int io; |
| 1759 | static int irq; |
| 1760 | static int debug; |
| 1761 | static char media[8]; |
| 1762 | static int duplex=-1; |
| 1763 | |
| 1764 | static int use_dma; /* These generate unused var warnings if ALLOW_DMA = 0 */ |
| 1765 | static int dma; |
| 1766 | static int dmasize=16; /* or 64 */ |
| 1767 | |
| 1768 | module_param(io, int, 0); |
| 1769 | module_param(irq, int, 0); |
| 1770 | module_param(debug, int, 0); |
| 1771 | module_param_string(media, media, sizeof(media), 0); |
| 1772 | module_param(duplex, int, 0); |
| 1773 | module_param(dma , int, 0); |
| 1774 | module_param(dmasize , int, 0); |
| 1775 | module_param(use_dma , int, 0); |
| 1776 | MODULE_PARM_DESC(io, "cs89x0 I/O base address"); |
| 1777 | MODULE_PARM_DESC(irq, "cs89x0 IRQ number"); |
| 1778 | #if DEBUGGING |
| 1779 | MODULE_PARM_DESC(debug, "cs89x0 debug level (0-6)"); |
| 1780 | #else |
| 1781 | MODULE_PARM_DESC(debug, "(ignored)"); |
| 1782 | #endif |
| 1783 | MODULE_PARM_DESC(media, "Set cs89x0 adapter(s) media type(s) (rj45,bnc,aui)"); |
| 1784 | /* No other value than -1 for duplex seems to be currently interpreted */ |
| 1785 | MODULE_PARM_DESC(duplex, "(ignored)"); |
| 1786 | #if ALLOW_DMA |
| 1787 | MODULE_PARM_DESC(dma , "cs89x0 ISA DMA channel; ignored if use_dma=0"); |
| 1788 | MODULE_PARM_DESC(dmasize , "cs89x0 DMA size in kB (16,64); ignored if use_dma=0"); |
| 1789 | MODULE_PARM_DESC(use_dma , "cs89x0 using DMA (0-1)"); |
| 1790 | #else |
| 1791 | MODULE_PARM_DESC(dma , "(ignored)"); |
| 1792 | MODULE_PARM_DESC(dmasize , "(ignored)"); |
| 1793 | MODULE_PARM_DESC(use_dma , "(ignored)"); |
| 1794 | #endif |
| 1795 | |
Francois Cami | e1f8e87 | 2008-10-15 22:01:59 -0700 | [diff] [blame] | 1796 | MODULE_AUTHOR("Mike Cruse, Russwll Nelson <nelson@crynwr.com>, Andrew Morton"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1797 | MODULE_LICENSE("GPL"); |
| 1798 | |
| 1799 | |
| 1800 | /* |
| 1801 | * media=t - specify media type |
| 1802 | or media=2 |
| 1803 | or media=aui |
| 1804 | or medai=auto |
| 1805 | * duplex=0 - specify forced half/full/autonegotiate duplex |
| 1806 | * debug=# - debug level |
| 1807 | |
| 1808 | |
| 1809 | * Default Chip Configuration: |
| 1810 | * DMA Burst = enabled |
| 1811 | * IOCHRDY Enabled = enabled |
| 1812 | * UseSA = enabled |
| 1813 | * CS8900 defaults to half-duplex if not specified on command-line |
| 1814 | * CS8920 defaults to autoneg if not specified on command-line |
| 1815 | * Use reset defaults for other config parameters |
| 1816 | |
| 1817 | * Assumptions: |
| 1818 | * media type specified is supported (circuitry is present) |
| 1819 | * if memory address is > 1MB, then required mem decode hw is present |
| 1820 | * if 10B-2, then agent other than driver will enable DC/DC converter |
| 1821 | (hw or software util) |
| 1822 | |
| 1823 | |
| 1824 | */ |
| 1825 | |
Andrew Morton | e26c129 | 2006-08-14 22:59:59 -0700 | [diff] [blame] | 1826 | int __init init_module(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1827 | { |
| 1828 | struct net_device *dev = alloc_etherdev(sizeof(struct net_local)); |
| 1829 | struct net_local *lp; |
| 1830 | int ret = 0; |
| 1831 | |
| 1832 | #if DEBUGGING |
| 1833 | net_debug = debug; |
| 1834 | #else |
| 1835 | debug = 0; |
| 1836 | #endif |
| 1837 | if (!dev) |
| 1838 | return -ENOMEM; |
| 1839 | |
| 1840 | dev->irq = irq; |
| 1841 | dev->base_addr = io; |
| 1842 | lp = netdev_priv(dev); |
| 1843 | |
| 1844 | #if ALLOW_DMA |
| 1845 | if (use_dma) { |
| 1846 | lp->use_dma = use_dma; |
| 1847 | lp->dma = dma; |
| 1848 | lp->dmasize = dmasize; |
| 1849 | } |
| 1850 | #endif |
| 1851 | |
| 1852 | spin_lock_init(&lp->lock); |
| 1853 | |
| 1854 | /* boy, they'd better get these right */ |
| 1855 | if (!strcmp(media, "rj45")) |
| 1856 | lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T; |
| 1857 | else if (!strcmp(media, "aui")) |
| 1858 | lp->adapter_cnf = A_CNF_MEDIA_AUI | A_CNF_AUI; |
| 1859 | else if (!strcmp(media, "bnc")) |
| 1860 | lp->adapter_cnf = A_CNF_MEDIA_10B_2 | A_CNF_10B_2; |
| 1861 | else |
| 1862 | lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T; |
| 1863 | |
| 1864 | if (duplex==-1) |
| 1865 | lp->auto_neg_cnf = AUTO_NEG_ENABLE; |
| 1866 | |
| 1867 | if (io == 0) { |
| 1868 | printk(KERN_ERR "cs89x0.c: Module autoprobing not allowed.\n"); |
| 1869 | printk(KERN_ERR "cs89x0.c: Append io=0xNNN\n"); |
| 1870 | ret = -EPERM; |
| 1871 | goto out; |
| 1872 | } else if (io <= 0x1ff) { |
| 1873 | ret = -ENXIO; |
| 1874 | goto out; |
| 1875 | } |
| 1876 | |
| 1877 | #if ALLOW_DMA |
| 1878 | if (use_dma && dmasize != 16 && dmasize != 64) { |
| 1879 | printk(KERN_ERR "cs89x0.c: dma size must be either 16K or 64K, not %dK\n", dmasize); |
| 1880 | ret = -EPERM; |
| 1881 | goto out; |
| 1882 | } |
| 1883 | #endif |
| 1884 | ret = cs89x0_probe1(dev, io, 1); |
| 1885 | if (ret) |
| 1886 | goto out; |
| 1887 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1888 | dev_cs89x0 = dev; |
| 1889 | return 0; |
| 1890 | out: |
| 1891 | free_netdev(dev); |
| 1892 | return ret; |
| 1893 | } |
| 1894 | |
Al Viro | afc8eb4 | 2006-06-14 18:50:53 -0400 | [diff] [blame] | 1895 | void __exit |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1896 | cleanup_module(void) |
| 1897 | { |
| 1898 | unregister_netdev(dev_cs89x0); |
Lennert Buytenhek | fc8c7d7 | 2006-01-08 01:01:08 -0800 | [diff] [blame] | 1899 | writeword(dev_cs89x0->base_addr, ADD_PORT, PP_ChipID); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1900 | release_region(dev_cs89x0->base_addr, NETCARD_IO_EXTENT); |
| 1901 | free_netdev(dev_cs89x0); |
| 1902 | } |
| 1903 | #endif /* MODULE */ |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1904 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1905 | /* |
| 1906 | * Local variables: |
| 1907 | * version-control: t |
| 1908 | * kept-new-versions: 5 |
| 1909 | * c-indent-level: 8 |
| 1910 | * tab-width: 8 |
| 1911 | * End: |
| 1912 | * |
| 1913 | */ |