Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Goramo PCI200SYN synchronous serial card driver for Linux |
| 3 | * |
| 4 | * Copyright (C) 2002-2003 Krzysztof Halasa <khc@pm.waw.pl> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify it |
| 7 | * under the terms of version 2 of the GNU General Public License |
| 8 | * as published by the Free Software Foundation. |
| 9 | * |
Krzysztof Halasa | 467c432 | 2006-06-26 21:36:52 +0200 | [diff] [blame] | 10 | * For information see <http://www.kernel.org/pub/linux/utils/net/hdlc/> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 11 | * |
| 12 | * Sources of information: |
| 13 | * Hitachi HD64572 SCA-II User's Manual |
| 14 | * PLX Technology Inc. PCI9052 Data Book |
| 15 | */ |
| 16 | |
| 17 | #include <linux/module.h> |
| 18 | #include <linux/kernel.h> |
| 19 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 20 | #include <linux/types.h> |
| 21 | #include <linux/fcntl.h> |
| 22 | #include <linux/in.h> |
| 23 | #include <linux/string.h> |
| 24 | #include <linux/errno.h> |
| 25 | #include <linux/init.h> |
| 26 | #include <linux/ioport.h> |
| 27 | #include <linux/moduleparam.h> |
| 28 | #include <linux/netdevice.h> |
| 29 | #include <linux/hdlc.h> |
| 30 | #include <linux/pci.h> |
Al Viro | 164006d | 2005-11-30 23:47:05 -0500 | [diff] [blame] | 31 | #include <linux/delay.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | #include <asm/io.h> |
| 33 | |
| 34 | #include "hd64572.h" |
| 35 | |
| 36 | static const char* version = "Goramo PCI200SYN driver version: 1.16"; |
| 37 | static const char* devname = "PCI200SYN"; |
| 38 | |
| 39 | #undef DEBUG_PKT |
| 40 | #define DEBUG_RINGS |
| 41 | |
| 42 | #define PCI200SYN_PLX_SIZE 0x80 /* PLX control window size (128b) */ |
| 43 | #define PCI200SYN_SCA_SIZE 0x400 /* SCA window size (1Kb) */ |
| 44 | #define ALL_PAGES_ALWAYS_MAPPED |
| 45 | #define NEED_DETECT_RAM |
| 46 | #define NEED_SCA_MSCI_INTR |
| 47 | #define MAX_TX_BUFFERS 10 |
| 48 | |
| 49 | static int pci_clock_freq = 33000000; |
| 50 | #define CLOCK_BASE pci_clock_freq |
| 51 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | /* |
| 53 | * PLX PCI9052 local configuration and shared runtime registers. |
| 54 | * This structure can be used to access 9052 registers (memory mapped). |
| 55 | */ |
| 56 | typedef struct { |
| 57 | u32 loc_addr_range[4]; /* 00-0Ch : Local Address Ranges */ |
| 58 | u32 loc_rom_range; /* 10h : Local ROM Range */ |
| 59 | u32 loc_addr_base[4]; /* 14-20h : Local Address Base Addrs */ |
| 60 | u32 loc_rom_base; /* 24h : Local ROM Base */ |
| 61 | u32 loc_bus_descr[4]; /* 28-34h : Local Bus Descriptors */ |
| 62 | u32 rom_bus_descr; /* 38h : ROM Bus Descriptor */ |
| 63 | u32 cs_base[4]; /* 3C-48h : Chip Select Base Addrs */ |
| 64 | u32 intr_ctrl_stat; /* 4Ch : Interrupt Control/Status */ |
| 65 | u32 init_ctrl; /* 50h : EEPROM ctrl, Init Ctrl, etc */ |
| 66 | }plx9052; |
| 67 | |
| 68 | |
| 69 | |
| 70 | typedef struct port_s { |
| 71 | struct net_device *dev; |
| 72 | struct card_s *card; |
| 73 | spinlock_t lock; /* TX lock */ |
| 74 | sync_serial_settings settings; |
| 75 | int rxpart; /* partial frame received, next frame invalid*/ |
| 76 | unsigned short encoding; |
| 77 | unsigned short parity; |
| 78 | u16 rxin; /* rx ring buffer 'in' pointer */ |
| 79 | u16 txin; /* tx ring buffer 'in' and 'last' pointers */ |
| 80 | u16 txlast; |
| 81 | u8 rxs, txs, tmc; /* SCA registers */ |
| 82 | u8 phy_node; /* physical port # - 0 or 1 */ |
| 83 | }port_t; |
| 84 | |
| 85 | |
| 86 | |
| 87 | typedef struct card_s { |
| 88 | u8 __iomem *rambase; /* buffer memory base (virtual) */ |
| 89 | u8 __iomem *scabase; /* SCA memory base (virtual) */ |
| 90 | plx9052 __iomem *plxbase;/* PLX registers memory base (virtual) */ |
| 91 | u16 rx_ring_buffers; /* number of buffers in a ring */ |
| 92 | u16 tx_ring_buffers; |
| 93 | u16 buff_offset; /* offset of first buffer of first channel */ |
| 94 | u8 irq; /* interrupt request level */ |
| 95 | |
| 96 | port_t ports[2]; |
| 97 | }card_t; |
| 98 | |
| 99 | |
| 100 | #define sca_in(reg, card) readb(card->scabase + (reg)) |
| 101 | #define sca_out(value, reg, card) writeb(value, card->scabase + (reg)) |
| 102 | #define sca_inw(reg, card) readw(card->scabase + (reg)) |
| 103 | #define sca_outw(value, reg, card) writew(value, card->scabase + (reg)) |
| 104 | #define sca_inl(reg, card) readl(card->scabase + (reg)) |
| 105 | #define sca_outl(value, reg, card) writel(value, card->scabase + (reg)) |
| 106 | |
| 107 | #define port_to_card(port) (port->card) |
| 108 | #define log_node(port) (port->phy_node) |
| 109 | #define phy_node(port) (port->phy_node) |
| 110 | #define winbase(card) (card->rambase) |
| 111 | #define get_port(card, port) (&card->ports[port]) |
| 112 | #define sca_flush(card) (sca_in(IER0, card)); |
| 113 | |
| 114 | static inline void new_memcpy_toio(char __iomem *dest, char *src, int length) |
| 115 | { |
| 116 | int len; |
| 117 | do { |
| 118 | len = length > 256 ? 256 : length; |
| 119 | memcpy_toio(dest, src, len); |
| 120 | dest += len; |
| 121 | src += len; |
| 122 | length -= len; |
| 123 | readb(dest); |
| 124 | } while (len); |
| 125 | } |
| 126 | |
| 127 | #undef memcpy_toio |
| 128 | #define memcpy_toio new_memcpy_toio |
| 129 | |
| 130 | #include "hd6457x.c" |
| 131 | |
| 132 | |
| 133 | static void pci200_set_iface(port_t *port) |
| 134 | { |
| 135 | card_t *card = port->card; |
| 136 | u16 msci = get_msci(port); |
| 137 | u8 rxs = port->rxs & CLK_BRG_MASK; |
| 138 | u8 txs = port->txs & CLK_BRG_MASK; |
| 139 | |
| 140 | sca_out(EXS_TES1, (phy_node(port) ? MSCI1_OFFSET : MSCI0_OFFSET) + EXS, |
| 141 | port_to_card(port)); |
| 142 | switch(port->settings.clock_type) { |
| 143 | case CLOCK_INT: |
| 144 | rxs |= CLK_BRG; /* BRG output */ |
| 145 | txs |= CLK_PIN_OUT | CLK_TX_RXCLK; /* RX clock */ |
| 146 | break; |
| 147 | |
| 148 | case CLOCK_TXINT: |
| 149 | rxs |= CLK_LINE; /* RXC input */ |
| 150 | txs |= CLK_PIN_OUT | CLK_BRG; /* BRG output */ |
| 151 | break; |
| 152 | |
| 153 | case CLOCK_TXFROMRX: |
| 154 | rxs |= CLK_LINE; /* RXC input */ |
| 155 | txs |= CLK_PIN_OUT | CLK_TX_RXCLK; /* RX clock */ |
| 156 | break; |
| 157 | |
| 158 | default: /* EXTernal clock */ |
| 159 | rxs |= CLK_LINE; /* RXC input */ |
| 160 | txs |= CLK_PIN_OUT | CLK_LINE; /* TXC input */ |
| 161 | break; |
| 162 | } |
| 163 | |
| 164 | port->rxs = rxs; |
| 165 | port->txs = txs; |
| 166 | sca_out(rxs, msci + RXS, card); |
| 167 | sca_out(txs, msci + TXS, card); |
| 168 | sca_set_port(port); |
| 169 | } |
| 170 | |
| 171 | |
| 172 | |
| 173 | static int pci200_open(struct net_device *dev) |
| 174 | { |
| 175 | port_t *port = dev_to_port(dev); |
| 176 | |
| 177 | int result = hdlc_open(dev); |
| 178 | if (result) |
| 179 | return result; |
| 180 | |
| 181 | sca_open(dev); |
| 182 | pci200_set_iface(port); |
| 183 | sca_flush(port_to_card(port)); |
| 184 | return 0; |
| 185 | } |
| 186 | |
| 187 | |
| 188 | |
| 189 | static int pci200_close(struct net_device *dev) |
| 190 | { |
| 191 | sca_close(dev); |
| 192 | sca_flush(port_to_card(dev_to_port(dev))); |
| 193 | hdlc_close(dev); |
| 194 | return 0; |
| 195 | } |
| 196 | |
| 197 | |
| 198 | |
| 199 | static int pci200_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
| 200 | { |
| 201 | const size_t size = sizeof(sync_serial_settings); |
| 202 | sync_serial_settings new_line; |
| 203 | sync_serial_settings __user *line = ifr->ifr_settings.ifs_ifsu.sync; |
| 204 | port_t *port = dev_to_port(dev); |
| 205 | |
| 206 | #ifdef DEBUG_RINGS |
| 207 | if (cmd == SIOCDEVPRIVATE) { |
| 208 | sca_dump_rings(dev); |
| 209 | return 0; |
| 210 | } |
| 211 | #endif |
| 212 | if (cmd != SIOCWANDEV) |
| 213 | return hdlc_ioctl(dev, ifr, cmd); |
| 214 | |
| 215 | switch(ifr->ifr_settings.type) { |
| 216 | case IF_GET_IFACE: |
| 217 | ifr->ifr_settings.type = IF_IFACE_V35; |
| 218 | if (ifr->ifr_settings.size < size) { |
| 219 | ifr->ifr_settings.size = size; /* data size wanted */ |
| 220 | return -ENOBUFS; |
| 221 | } |
| 222 | if (copy_to_user(line, &port->settings, size)) |
| 223 | return -EFAULT; |
| 224 | return 0; |
| 225 | |
| 226 | case IF_IFACE_V35: |
| 227 | case IF_IFACE_SYNC_SERIAL: |
| 228 | if (!capable(CAP_NET_ADMIN)) |
| 229 | return -EPERM; |
| 230 | |
| 231 | if (copy_from_user(&new_line, line, size)) |
| 232 | return -EFAULT; |
| 233 | |
| 234 | if (new_line.clock_type != CLOCK_EXT && |
| 235 | new_line.clock_type != CLOCK_TXFROMRX && |
| 236 | new_line.clock_type != CLOCK_INT && |
| 237 | new_line.clock_type != CLOCK_TXINT) |
| 238 | return -EINVAL; /* No such clock setting */ |
| 239 | |
| 240 | if (new_line.loopback != 0 && new_line.loopback != 1) |
| 241 | return -EINVAL; |
| 242 | |
| 243 | memcpy(&port->settings, &new_line, size); /* Update settings */ |
| 244 | pci200_set_iface(port); |
| 245 | sca_flush(port_to_card(port)); |
| 246 | return 0; |
| 247 | |
| 248 | default: |
| 249 | return hdlc_ioctl(dev, ifr, cmd); |
| 250 | } |
| 251 | } |
| 252 | |
| 253 | |
| 254 | |
| 255 | static void pci200_pci_remove_one(struct pci_dev *pdev) |
| 256 | { |
| 257 | int i; |
| 258 | card_t *card = pci_get_drvdata(pdev); |
| 259 | |
Krzysztof Halasa | 58a7ce6 | 2006-03-30 17:01:53 +0200 | [diff] [blame] | 260 | for (i = 0; i < 2; i++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | if (card->ports[i].card) { |
| 262 | struct net_device *dev = port_to_dev(&card->ports[i]); |
| 263 | unregister_hdlc_device(dev); |
| 264 | } |
| 265 | |
| 266 | if (card->irq) |
| 267 | free_irq(card->irq, card); |
| 268 | |
| 269 | if (card->rambase) |
| 270 | iounmap(card->rambase); |
| 271 | if (card->scabase) |
| 272 | iounmap(card->scabase); |
| 273 | if (card->plxbase) |
| 274 | iounmap(card->plxbase); |
| 275 | |
| 276 | pci_release_regions(pdev); |
| 277 | pci_disable_device(pdev); |
| 278 | pci_set_drvdata(pdev, NULL); |
| 279 | if (card->ports[0].dev) |
| 280 | free_netdev(card->ports[0].dev); |
| 281 | if (card->ports[1].dev) |
| 282 | free_netdev(card->ports[1].dev); |
| 283 | kfree(card); |
| 284 | } |
| 285 | |
| 286 | |
| 287 | |
| 288 | static int __devinit pci200_pci_init_one(struct pci_dev *pdev, |
| 289 | const struct pci_device_id *ent) |
| 290 | { |
| 291 | card_t *card; |
| 292 | u8 rev_id; |
| 293 | u32 __iomem *p; |
| 294 | int i; |
| 295 | u32 ramsize; |
| 296 | u32 ramphys; /* buffer memory base */ |
| 297 | u32 scaphys; /* SCA memory base */ |
| 298 | u32 plxphys; /* PLX registers memory base */ |
| 299 | |
| 300 | #ifndef MODULE |
| 301 | static int printed_version; |
| 302 | if (!printed_version++) |
| 303 | printk(KERN_INFO "%s\n", version); |
| 304 | #endif |
| 305 | |
| 306 | i = pci_enable_device(pdev); |
| 307 | if (i) |
| 308 | return i; |
| 309 | |
| 310 | i = pci_request_regions(pdev, "PCI200SYN"); |
| 311 | if (i) { |
| 312 | pci_disable_device(pdev); |
| 313 | return i; |
| 314 | } |
| 315 | |
| 316 | card = kmalloc(sizeof(card_t), GFP_KERNEL); |
| 317 | if (card == NULL) { |
| 318 | printk(KERN_ERR "pci200syn: unable to allocate memory\n"); |
| 319 | pci_release_regions(pdev); |
| 320 | pci_disable_device(pdev); |
| 321 | return -ENOBUFS; |
| 322 | } |
| 323 | memset(card, 0, sizeof(card_t)); |
| 324 | pci_set_drvdata(pdev, card); |
| 325 | card->ports[0].dev = alloc_hdlcdev(&card->ports[0]); |
| 326 | card->ports[1].dev = alloc_hdlcdev(&card->ports[1]); |
| 327 | if (!card->ports[0].dev || !card->ports[1].dev) { |
| 328 | printk(KERN_ERR "pci200syn: unable to allocate memory\n"); |
| 329 | pci200_pci_remove_one(pdev); |
| 330 | return -ENOMEM; |
| 331 | } |
| 332 | |
| 333 | pci_read_config_byte(pdev, PCI_REVISION_ID, &rev_id); |
| 334 | if (pci_resource_len(pdev, 0) != PCI200SYN_PLX_SIZE || |
| 335 | pci_resource_len(pdev, 2) != PCI200SYN_SCA_SIZE || |
| 336 | pci_resource_len(pdev, 3) < 16384) { |
| 337 | printk(KERN_ERR "pci200syn: invalid card EEPROM parameters\n"); |
| 338 | pci200_pci_remove_one(pdev); |
| 339 | return -EFAULT; |
| 340 | } |
| 341 | |
| 342 | plxphys = pci_resource_start(pdev,0) & PCI_BASE_ADDRESS_MEM_MASK; |
| 343 | card->plxbase = ioremap(plxphys, PCI200SYN_PLX_SIZE); |
| 344 | |
| 345 | scaphys = pci_resource_start(pdev,2) & PCI_BASE_ADDRESS_MEM_MASK; |
| 346 | card->scabase = ioremap(scaphys, PCI200SYN_SCA_SIZE); |
| 347 | |
| 348 | ramphys = pci_resource_start(pdev,3) & PCI_BASE_ADDRESS_MEM_MASK; |
| 349 | card->rambase = ioremap(ramphys, pci_resource_len(pdev,3)); |
| 350 | |
| 351 | if (card->plxbase == NULL || |
| 352 | card->scabase == NULL || |
| 353 | card->rambase == NULL) { |
| 354 | printk(KERN_ERR "pci200syn: ioremap() failed\n"); |
| 355 | pci200_pci_remove_one(pdev); |
Krzysztof Halasa | 4446065 | 2006-06-22 22:29:28 +0200 | [diff] [blame] | 356 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | } |
| 358 | |
| 359 | /* Reset PLX */ |
| 360 | p = &card->plxbase->init_ctrl; |
| 361 | writel(readl(p) | 0x40000000, p); |
| 362 | readl(p); /* Flush the write - do not use sca_flush */ |
| 363 | udelay(1); |
| 364 | |
| 365 | writel(readl(p) & ~0x40000000, p); |
| 366 | readl(p); /* Flush the write - do not use sca_flush */ |
| 367 | udelay(1); |
| 368 | |
| 369 | ramsize = sca_detect_ram(card, card->rambase, |
| 370 | pci_resource_len(pdev, 3)); |
| 371 | |
| 372 | /* number of TX + RX buffers for one port - this is dual port card */ |
| 373 | i = ramsize / (2 * (sizeof(pkt_desc) + HDLC_MAX_MRU)); |
| 374 | card->tx_ring_buffers = min(i / 2, MAX_TX_BUFFERS); |
| 375 | card->rx_ring_buffers = i - card->tx_ring_buffers; |
| 376 | |
| 377 | card->buff_offset = 2 * sizeof(pkt_desc) * (card->tx_ring_buffers + |
| 378 | card->rx_ring_buffers); |
| 379 | |
| 380 | printk(KERN_INFO "pci200syn: %u KB RAM at 0x%x, IRQ%u, using %u TX +" |
| 381 | " %u RX packets rings\n", ramsize / 1024, ramphys, |
| 382 | pdev->irq, card->tx_ring_buffers, card->rx_ring_buffers); |
| 383 | |
Krzysztof Halasa | 58a7ce6 | 2006-03-30 17:01:53 +0200 | [diff] [blame] | 384 | if (pdev->subsystem_device == PCI_DEVICE_ID_PLX_9050) { |
| 385 | printk(KERN_ERR "Detected PCI200SYN card with old " |
| 386 | "configuration data.\n"); |
| 387 | printk(KERN_ERR "See <http://www.kernel.org/pub/" |
| 388 | "linux/utils/net/hdlc/pci200syn/> for update.\n"); |
| 389 | printk(KERN_ERR "The card will stop working with" |
| 390 | " future versions of Linux if not updated.\n"); |
| 391 | } |
| 392 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 393 | if (card->tx_ring_buffers < 1) { |
| 394 | printk(KERN_ERR "pci200syn: RAM test failed\n"); |
| 395 | pci200_pci_remove_one(pdev); |
| 396 | return -EFAULT; |
| 397 | } |
| 398 | |
| 399 | /* Enable interrupts on the PCI bridge */ |
| 400 | p = &card->plxbase->intr_ctrl_stat; |
| 401 | writew(readw(p) | 0x0040, p); |
| 402 | |
| 403 | /* Allocate IRQ */ |
Thomas Gleixner | 1fb9df5 | 2006-07-01 19:29:39 -0700 | [diff] [blame] | 404 | if (request_irq(pdev->irq, sca_intr, IRQF_SHARED, devname, card)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 405 | printk(KERN_WARNING "pci200syn: could not allocate IRQ%d.\n", |
| 406 | pdev->irq); |
| 407 | pci200_pci_remove_one(pdev); |
| 408 | return -EBUSY; |
| 409 | } |
| 410 | card->irq = pdev->irq; |
| 411 | |
| 412 | sca_init(card, 0); |
| 413 | |
Krzysztof Halasa | 58a7ce6 | 2006-03-30 17:01:53 +0200 | [diff] [blame] | 414 | for (i = 0; i < 2; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | port_t *port = &card->ports[i]; |
| 416 | struct net_device *dev = port_to_dev(port); |
| 417 | hdlc_device *hdlc = dev_to_hdlc(dev); |
| 418 | port->phy_node = i; |
| 419 | |
| 420 | spin_lock_init(&port->lock); |
| 421 | SET_MODULE_OWNER(dev); |
| 422 | dev->irq = card->irq; |
| 423 | dev->mem_start = ramphys; |
| 424 | dev->mem_end = ramphys + ramsize - 1; |
| 425 | dev->tx_queue_len = 50; |
| 426 | dev->do_ioctl = pci200_ioctl; |
| 427 | dev->open = pci200_open; |
| 428 | dev->stop = pci200_close; |
| 429 | hdlc->attach = sca_attach; |
| 430 | hdlc->xmit = sca_xmit; |
| 431 | port->settings.clock_type = CLOCK_EXT; |
| 432 | port->card = card; |
Krzysztof Halasa | 58a7ce6 | 2006-03-30 17:01:53 +0200 | [diff] [blame] | 433 | if (register_hdlc_device(dev)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | printk(KERN_ERR "pci200syn: unable to register hdlc " |
| 435 | "device\n"); |
| 436 | port->card = NULL; |
| 437 | pci200_pci_remove_one(pdev); |
| 438 | return -ENOBUFS; |
| 439 | } |
| 440 | sca_init_sync_port(port); /* Set up SCA memory */ |
| 441 | |
| 442 | printk(KERN_INFO "%s: PCI200SYN node %d\n", |
| 443 | dev->name, port->phy_node); |
| 444 | } |
| 445 | |
| 446 | sca_flush(card); |
| 447 | return 0; |
| 448 | } |
| 449 | |
| 450 | |
| 451 | |
| 452 | static struct pci_device_id pci200_pci_tbl[] __devinitdata = { |
Krzysztof Halasa | 58a7ce6 | 2006-03-30 17:01:53 +0200 | [diff] [blame] | 453 | { PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050, PCI_VENDOR_ID_PLX, |
| 454 | PCI_DEVICE_ID_PLX_9050, 0, 0, 0 }, |
| 455 | { PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050, PCI_VENDOR_ID_PLX, |
| 456 | PCI_DEVICE_ID_PLX_PCI200SYN, 0, 0, 0 }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | { 0, } |
| 458 | }; |
| 459 | |
| 460 | |
| 461 | static struct pci_driver pci200_pci_driver = { |
| 462 | .name = "PCI200SYN", |
| 463 | .id_table = pci200_pci_tbl, |
| 464 | .probe = pci200_pci_init_one, |
| 465 | .remove = pci200_pci_remove_one, |
| 466 | }; |
| 467 | |
| 468 | |
| 469 | static int __init pci200_init_module(void) |
| 470 | { |
| 471 | #ifdef MODULE |
| 472 | printk(KERN_INFO "%s\n", version); |
| 473 | #endif |
| 474 | if (pci_clock_freq < 1000000 || pci_clock_freq > 80000000) { |
| 475 | printk(KERN_ERR "pci200syn: Invalid PCI clock frequency\n"); |
| 476 | return -EINVAL; |
| 477 | } |
Jeff Garzik | 2991762 | 2006-08-19 17:48:59 -0400 | [diff] [blame] | 478 | return pci_register_driver(&pci200_pci_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 479 | } |
| 480 | |
| 481 | |
| 482 | |
| 483 | static void __exit pci200_cleanup_module(void) |
| 484 | { |
| 485 | pci_unregister_driver(&pci200_pci_driver); |
| 486 | } |
| 487 | |
| 488 | MODULE_AUTHOR("Krzysztof Halasa <khc@pm.waw.pl>"); |
| 489 | MODULE_DESCRIPTION("Goramo PCI200SYN serial port driver"); |
| 490 | MODULE_LICENSE("GPL v2"); |
| 491 | MODULE_DEVICE_TABLE(pci, pci200_pci_tbl); |
| 492 | module_param(pci_clock_freq, int, 0444); |
| 493 | MODULE_PARM_DESC(pci_clock_freq, "System PCI clock frequency in Hz"); |
| 494 | module_init(pci200_init_module); |
| 495 | module_exit(pci200_cleanup_module); |