Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Goramo PCI200SYN synchronous serial card driver for Linux |
| 3 | * |
Krzysztof Hałasa | 61e0a6a | 2008-07-09 23:13:49 +0200 | [diff] [blame] | 4 | * Copyright (C) 2002-2008 Krzysztof Halasa <khc@pm.waw.pl> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Joe Perches | 12a3bfe | 2011-06-26 19:01:28 +0000 | [diff] [blame] | 17 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| 18 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | #include <linux/module.h> |
| 20 | #include <linux/kernel.h> |
Ingo Molnar | 86ae13b | 2009-10-12 16:22:46 +0200 | [diff] [blame] | 21 | #include <linux/capability.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | #include <linux/types.h> |
| 24 | #include <linux/fcntl.h> |
| 25 | #include <linux/in.h> |
| 26 | #include <linux/string.h> |
| 27 | #include <linux/errno.h> |
| 28 | #include <linux/init.h> |
| 29 | #include <linux/ioport.h> |
| 30 | #include <linux/moduleparam.h> |
| 31 | #include <linux/netdevice.h> |
| 32 | #include <linux/hdlc.h> |
| 33 | #include <linux/pci.h> |
Al Viro | 164006d | 2005-11-30 23:47:05 -0500 | [diff] [blame] | 34 | #include <linux/delay.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | #include <asm/io.h> |
| 36 | |
| 37 | #include "hd64572.h" |
| 38 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | #define MAX_TX_BUFFERS 10 |
| 45 | |
| 46 | static int pci_clock_freq = 33000000; |
| 47 | #define CLOCK_BASE pci_clock_freq |
| 48 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | /* |
| 50 | * PLX PCI9052 local configuration and shared runtime registers. |
| 51 | * This structure can be used to access 9052 registers (memory mapped). |
| 52 | */ |
| 53 | typedef struct { |
| 54 | u32 loc_addr_range[4]; /* 00-0Ch : Local Address Ranges */ |
| 55 | u32 loc_rom_range; /* 10h : Local ROM Range */ |
| 56 | u32 loc_addr_base[4]; /* 14-20h : Local Address Base Addrs */ |
| 57 | u32 loc_rom_base; /* 24h : Local ROM Base */ |
| 58 | u32 loc_bus_descr[4]; /* 28-34h : Local Bus Descriptors */ |
| 59 | u32 rom_bus_descr; /* 38h : ROM Bus Descriptor */ |
| 60 | u32 cs_base[4]; /* 3C-48h : Chip Select Base Addrs */ |
| 61 | u32 intr_ctrl_stat; /* 4Ch : Interrupt Control/Status */ |
| 62 | u32 init_ctrl; /* 50h : EEPROM ctrl, Init Ctrl, etc */ |
| 63 | }plx9052; |
| 64 | |
| 65 | |
| 66 | |
| 67 | typedef struct port_s { |
Krzysztof Hałasa | abc9d91 | 2008-07-09 16:49:37 +0200 | [diff] [blame] | 68 | struct napi_struct napi; |
Krzysztof Hałasa | 61e0a6a | 2008-07-09 23:13:49 +0200 | [diff] [blame] | 69 | struct net_device *netdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | struct card_s *card; |
| 71 | spinlock_t lock; /* TX lock */ |
| 72 | sync_serial_settings settings; |
| 73 | int rxpart; /* partial frame received, next frame invalid*/ |
| 74 | unsigned short encoding; |
| 75 | unsigned short parity; |
| 76 | u16 rxin; /* rx ring buffer 'in' pointer */ |
| 77 | u16 txin; /* tx ring buffer 'in' and 'last' pointers */ |
| 78 | u16 txlast; |
| 79 | u8 rxs, txs, tmc; /* SCA registers */ |
Krzysztof Hałasa | 61e0a6a | 2008-07-09 23:13:49 +0200 | [diff] [blame] | 80 | u8 chan; /* physical port # - 0 or 1 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | }port_t; |
| 82 | |
| 83 | |
| 84 | |
| 85 | typedef struct card_s { |
| 86 | u8 __iomem *rambase; /* buffer memory base (virtual) */ |
| 87 | u8 __iomem *scabase; /* SCA memory base (virtual) */ |
| 88 | plx9052 __iomem *plxbase;/* PLX registers memory base (virtual) */ |
| 89 | u16 rx_ring_buffers; /* number of buffers in a ring */ |
| 90 | u16 tx_ring_buffers; |
| 91 | u16 buff_offset; /* offset of first buffer of first channel */ |
| 92 | u8 irq; /* interrupt request level */ |
| 93 | |
| 94 | port_t ports[2]; |
| 95 | }card_t; |
| 96 | |
| 97 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 98 | #define get_port(card, port) (&card->ports[port]) |
| 99 | #define sca_flush(card) (sca_in(IER0, card)); |
| 100 | |
| 101 | static inline void new_memcpy_toio(char __iomem *dest, char *src, int length) |
| 102 | { |
| 103 | int len; |
| 104 | do { |
| 105 | len = length > 256 ? 256 : length; |
| 106 | memcpy_toio(dest, src, len); |
| 107 | dest += len; |
| 108 | src += len; |
| 109 | length -= len; |
| 110 | readb(dest); |
| 111 | } while (len); |
| 112 | } |
| 113 | |
| 114 | #undef memcpy_toio |
| 115 | #define memcpy_toio new_memcpy_toio |
| 116 | |
Krzysztof Hałasa | 6b40aba | 2008-03-24 16:39:02 +0100 | [diff] [blame] | 117 | #include "hd64572.c" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | |
| 119 | |
| 120 | static void pci200_set_iface(port_t *port) |
| 121 | { |
| 122 | card_t *card = port->card; |
| 123 | u16 msci = get_msci(port); |
| 124 | u8 rxs = port->rxs & CLK_BRG_MASK; |
| 125 | u8 txs = port->txs & CLK_BRG_MASK; |
| 126 | |
Krzysztof Hałasa | 61e0a6a | 2008-07-09 23:13:49 +0200 | [diff] [blame] | 127 | sca_out(EXS_TES1, (port->chan ? MSCI1_OFFSET : MSCI0_OFFSET) + EXS, |
| 128 | port->card); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | switch(port->settings.clock_type) { |
| 130 | case CLOCK_INT: |
| 131 | rxs |= CLK_BRG; /* BRG output */ |
| 132 | txs |= CLK_PIN_OUT | CLK_TX_RXCLK; /* RX clock */ |
| 133 | break; |
| 134 | |
| 135 | case CLOCK_TXINT: |
| 136 | rxs |= CLK_LINE; /* RXC input */ |
| 137 | txs |= CLK_PIN_OUT | CLK_BRG; /* BRG output */ |
| 138 | break; |
| 139 | |
| 140 | case CLOCK_TXFROMRX: |
| 141 | rxs |= CLK_LINE; /* RXC input */ |
| 142 | txs |= CLK_PIN_OUT | CLK_TX_RXCLK; /* RX clock */ |
| 143 | break; |
| 144 | |
| 145 | default: /* EXTernal clock */ |
| 146 | rxs |= CLK_LINE; /* RXC input */ |
| 147 | txs |= CLK_PIN_OUT | CLK_LINE; /* TXC input */ |
| 148 | break; |
| 149 | } |
| 150 | |
| 151 | port->rxs = rxs; |
| 152 | port->txs = txs; |
| 153 | sca_out(rxs, msci + RXS, card); |
| 154 | sca_out(txs, msci + TXS, card); |
| 155 | sca_set_port(port); |
| 156 | } |
| 157 | |
| 158 | |
| 159 | |
| 160 | static int pci200_open(struct net_device *dev) |
| 161 | { |
| 162 | port_t *port = dev_to_port(dev); |
| 163 | |
| 164 | int result = hdlc_open(dev); |
| 165 | if (result) |
| 166 | return result; |
| 167 | |
| 168 | sca_open(dev); |
| 169 | pci200_set_iface(port); |
Krzysztof Hałasa | 61e0a6a | 2008-07-09 23:13:49 +0200 | [diff] [blame] | 170 | sca_flush(port->card); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | return 0; |
| 172 | } |
| 173 | |
| 174 | |
| 175 | |
| 176 | static int pci200_close(struct net_device *dev) |
| 177 | { |
| 178 | sca_close(dev); |
Krzysztof Hałasa | 61e0a6a | 2008-07-09 23:13:49 +0200 | [diff] [blame] | 179 | sca_flush(dev_to_port(dev)->card); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | hdlc_close(dev); |
| 181 | return 0; |
| 182 | } |
| 183 | |
| 184 | |
| 185 | |
| 186 | static int pci200_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
| 187 | { |
| 188 | const size_t size = sizeof(sync_serial_settings); |
| 189 | sync_serial_settings new_line; |
| 190 | sync_serial_settings __user *line = ifr->ifr_settings.ifs_ifsu.sync; |
| 191 | port_t *port = dev_to_port(dev); |
| 192 | |
| 193 | #ifdef DEBUG_RINGS |
| 194 | if (cmd == SIOCDEVPRIVATE) { |
| 195 | sca_dump_rings(dev); |
| 196 | return 0; |
| 197 | } |
| 198 | #endif |
| 199 | if (cmd != SIOCWANDEV) |
| 200 | return hdlc_ioctl(dev, ifr, cmd); |
| 201 | |
| 202 | switch(ifr->ifr_settings.type) { |
| 203 | case IF_GET_IFACE: |
| 204 | ifr->ifr_settings.type = IF_IFACE_V35; |
| 205 | if (ifr->ifr_settings.size < size) { |
| 206 | ifr->ifr_settings.size = size; /* data size wanted */ |
| 207 | return -ENOBUFS; |
| 208 | } |
| 209 | if (copy_to_user(line, &port->settings, size)) |
| 210 | return -EFAULT; |
| 211 | return 0; |
| 212 | |
| 213 | case IF_IFACE_V35: |
| 214 | case IF_IFACE_SYNC_SERIAL: |
| 215 | if (!capable(CAP_NET_ADMIN)) |
| 216 | return -EPERM; |
| 217 | |
| 218 | if (copy_from_user(&new_line, line, size)) |
| 219 | return -EFAULT; |
| 220 | |
| 221 | if (new_line.clock_type != CLOCK_EXT && |
| 222 | new_line.clock_type != CLOCK_TXFROMRX && |
| 223 | new_line.clock_type != CLOCK_INT && |
| 224 | new_line.clock_type != CLOCK_TXINT) |
Julia Lawall | 354c8e3 | 2010-08-05 10:17:00 +0000 | [diff] [blame] | 225 | return -EINVAL; /* No such clock setting */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 226 | |
| 227 | if (new_line.loopback != 0 && new_line.loopback != 1) |
| 228 | return -EINVAL; |
| 229 | |
| 230 | memcpy(&port->settings, &new_line, size); /* Update settings */ |
| 231 | pci200_set_iface(port); |
Krzysztof Hałasa | 61e0a6a | 2008-07-09 23:13:49 +0200 | [diff] [blame] | 232 | sca_flush(port->card); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | return 0; |
| 234 | |
| 235 | default: |
| 236 | return hdlc_ioctl(dev, ifr, cmd); |
| 237 | } |
| 238 | } |
| 239 | |
| 240 | |
| 241 | |
| 242 | static void pci200_pci_remove_one(struct pci_dev *pdev) |
| 243 | { |
| 244 | int i; |
| 245 | card_t *card = pci_get_drvdata(pdev); |
| 246 | |
Krzysztof Halasa | 58a7ce6 | 2006-03-30 17:01:53 +0200 | [diff] [blame] | 247 | for (i = 0; i < 2; i++) |
Krzysztof Hałasa | 61e0a6a | 2008-07-09 23:13:49 +0200 | [diff] [blame] | 248 | if (card->ports[i].card) |
| 249 | unregister_hdlc_device(card->ports[i].netdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | |
| 251 | if (card->irq) |
| 252 | free_irq(card->irq, card); |
| 253 | |
| 254 | if (card->rambase) |
| 255 | iounmap(card->rambase); |
| 256 | if (card->scabase) |
| 257 | iounmap(card->scabase); |
| 258 | if (card->plxbase) |
| 259 | iounmap(card->plxbase); |
| 260 | |
| 261 | pci_release_regions(pdev); |
| 262 | pci_disable_device(pdev); |
| 263 | pci_set_drvdata(pdev, NULL); |
Krzysztof Hałasa | 61e0a6a | 2008-07-09 23:13:49 +0200 | [diff] [blame] | 264 | if (card->ports[0].netdev) |
| 265 | free_netdev(card->ports[0].netdev); |
| 266 | if (card->ports[1].netdev) |
| 267 | free_netdev(card->ports[1].netdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | kfree(card); |
| 269 | } |
| 270 | |
Krzysztof Hałasa | 991990a | 2009-01-08 22:52:11 +0100 | [diff] [blame] | 271 | static const struct net_device_ops pci200_ops = { |
| 272 | .ndo_open = pci200_open, |
| 273 | .ndo_stop = pci200_close, |
| 274 | .ndo_change_mtu = hdlc_change_mtu, |
| 275 | .ndo_start_xmit = hdlc_start_xmit, |
| 276 | .ndo_do_ioctl = pci200_ioctl, |
| 277 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | |
Bill Pemberton | aeea6bb | 2012-12-03 09:24:19 -0500 | [diff] [blame] | 279 | static int pci200_pci_init_one(struct pci_dev *pdev, |
Greg Kroah-Hartman | 1dd06ae | 2012-12-06 14:30:56 +0000 | [diff] [blame^] | 280 | const struct pci_device_id *ent) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | { |
| 282 | card_t *card; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | u32 __iomem *p; |
| 284 | int i; |
| 285 | u32 ramsize; |
| 286 | u32 ramphys; /* buffer memory base */ |
| 287 | u32 scaphys; /* SCA memory base */ |
| 288 | u32 plxphys; /* PLX registers memory base */ |
| 289 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | i = pci_enable_device(pdev); |
| 291 | if (i) |
| 292 | return i; |
| 293 | |
| 294 | i = pci_request_regions(pdev, "PCI200SYN"); |
| 295 | if (i) { |
| 296 | pci_disable_device(pdev); |
| 297 | return i; |
| 298 | } |
| 299 | |
Yoann Padioleau | dd00cc4 | 2007-07-19 01:49:03 -0700 | [diff] [blame] | 300 | card = kzalloc(sizeof(card_t), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | if (card == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | pci_release_regions(pdev); |
| 303 | pci_disable_device(pdev); |
| 304 | return -ENOBUFS; |
| 305 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | pci_set_drvdata(pdev, card); |
Krzysztof Hałasa | 61e0a6a | 2008-07-09 23:13:49 +0200 | [diff] [blame] | 307 | card->ports[0].netdev = alloc_hdlcdev(&card->ports[0]); |
| 308 | card->ports[1].netdev = alloc_hdlcdev(&card->ports[1]); |
| 309 | if (!card->ports[0].netdev || !card->ports[1].netdev) { |
Joe Perches | 12a3bfe | 2011-06-26 19:01:28 +0000 | [diff] [blame] | 310 | pr_err("unable to allocate memory\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 311 | pci200_pci_remove_one(pdev); |
| 312 | return -ENOMEM; |
| 313 | } |
| 314 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 315 | if (pci_resource_len(pdev, 0) != PCI200SYN_PLX_SIZE || |
| 316 | pci_resource_len(pdev, 2) != PCI200SYN_SCA_SIZE || |
| 317 | pci_resource_len(pdev, 3) < 16384) { |
Joe Perches | 12a3bfe | 2011-06-26 19:01:28 +0000 | [diff] [blame] | 318 | pr_err("invalid card EEPROM parameters\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 319 | pci200_pci_remove_one(pdev); |
| 320 | return -EFAULT; |
| 321 | } |
| 322 | |
| 323 | plxphys = pci_resource_start(pdev,0) & PCI_BASE_ADDRESS_MEM_MASK; |
| 324 | card->plxbase = ioremap(plxphys, PCI200SYN_PLX_SIZE); |
| 325 | |
| 326 | scaphys = pci_resource_start(pdev,2) & PCI_BASE_ADDRESS_MEM_MASK; |
| 327 | card->scabase = ioremap(scaphys, PCI200SYN_SCA_SIZE); |
| 328 | |
| 329 | ramphys = pci_resource_start(pdev,3) & PCI_BASE_ADDRESS_MEM_MASK; |
Arjan van de Ven | 275f165 | 2008-10-20 21:42:39 -0700 | [diff] [blame] | 330 | card->rambase = pci_ioremap_bar(pdev, 3); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | |
| 332 | if (card->plxbase == NULL || |
| 333 | card->scabase == NULL || |
| 334 | card->rambase == NULL) { |
Joe Perches | 12a3bfe | 2011-06-26 19:01:28 +0000 | [diff] [blame] | 335 | pr_err("ioremap() failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 336 | pci200_pci_remove_one(pdev); |
Krzysztof Halasa | 4446065 | 2006-06-22 22:29:28 +0200 | [diff] [blame] | 337 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | } |
| 339 | |
| 340 | /* Reset PLX */ |
| 341 | p = &card->plxbase->init_ctrl; |
| 342 | writel(readl(p) | 0x40000000, p); |
| 343 | readl(p); /* Flush the write - do not use sca_flush */ |
| 344 | udelay(1); |
| 345 | |
| 346 | writel(readl(p) & ~0x40000000, p); |
| 347 | readl(p); /* Flush the write - do not use sca_flush */ |
| 348 | udelay(1); |
| 349 | |
| 350 | ramsize = sca_detect_ram(card, card->rambase, |
| 351 | pci_resource_len(pdev, 3)); |
| 352 | |
| 353 | /* number of TX + RX buffers for one port - this is dual port card */ |
| 354 | i = ramsize / (2 * (sizeof(pkt_desc) + HDLC_MAX_MRU)); |
| 355 | card->tx_ring_buffers = min(i / 2, MAX_TX_BUFFERS); |
| 356 | card->rx_ring_buffers = i - card->tx_ring_buffers; |
| 357 | |
| 358 | card->buff_offset = 2 * sizeof(pkt_desc) * (card->tx_ring_buffers + |
| 359 | card->rx_ring_buffers); |
| 360 | |
Joe Perches | 12a3bfe | 2011-06-26 19:01:28 +0000 | [diff] [blame] | 361 | pr_info("%u KB RAM at 0x%x, IRQ%u, using %u TX + %u RX packets rings\n", |
| 362 | ramsize / 1024, ramphys, |
| 363 | pdev->irq, card->tx_ring_buffers, card->rx_ring_buffers); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | |
| 365 | if (card->tx_ring_buffers < 1) { |
Joe Perches | 12a3bfe | 2011-06-26 19:01:28 +0000 | [diff] [blame] | 366 | pr_err("RAM test failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | pci200_pci_remove_one(pdev); |
| 368 | return -EFAULT; |
| 369 | } |
| 370 | |
| 371 | /* Enable interrupts on the PCI bridge */ |
| 372 | p = &card->plxbase->intr_ctrl_stat; |
| 373 | writew(readw(p) | 0x0040, p); |
| 374 | |
| 375 | /* Allocate IRQ */ |
Krzysztof Hałasa | 9678343 | 2008-07-09 21:30:17 +0200 | [diff] [blame] | 376 | if (request_irq(pdev->irq, sca_intr, IRQF_SHARED, "pci200syn", card)) { |
Joe Perches | 12a3bfe | 2011-06-26 19:01:28 +0000 | [diff] [blame] | 377 | pr_warn("could not allocate IRQ%d\n", pdev->irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 378 | pci200_pci_remove_one(pdev); |
| 379 | return -EBUSY; |
| 380 | } |
| 381 | card->irq = pdev->irq; |
| 382 | |
| 383 | sca_init(card, 0); |
| 384 | |
Krzysztof Halasa | 58a7ce6 | 2006-03-30 17:01:53 +0200 | [diff] [blame] | 385 | for (i = 0; i < 2; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | port_t *port = &card->ports[i]; |
Krzysztof Hałasa | 61e0a6a | 2008-07-09 23:13:49 +0200 | [diff] [blame] | 387 | struct net_device *dev = port->netdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 388 | hdlc_device *hdlc = dev_to_hdlc(dev); |
Krzysztof Hałasa | 61e0a6a | 2008-07-09 23:13:49 +0200 | [diff] [blame] | 389 | port->chan = i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | |
| 391 | spin_lock_init(&port->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | dev->irq = card->irq; |
| 393 | dev->mem_start = ramphys; |
| 394 | dev->mem_end = ramphys + ramsize - 1; |
| 395 | dev->tx_queue_len = 50; |
Krzysztof Hałasa | 991990a | 2009-01-08 22:52:11 +0100 | [diff] [blame] | 396 | dev->netdev_ops = &pci200_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | hdlc->attach = sca_attach; |
| 398 | hdlc->xmit = sca_xmit; |
| 399 | port->settings.clock_type = CLOCK_EXT; |
| 400 | port->card = card; |
Krzysztof Hałasa | abc9d91 | 2008-07-09 16:49:37 +0200 | [diff] [blame] | 401 | sca_init_port(port); |
Krzysztof Halasa | 58a7ce6 | 2006-03-30 17:01:53 +0200 | [diff] [blame] | 402 | if (register_hdlc_device(dev)) { |
Joe Perches | 12a3bfe | 2011-06-26 19:01:28 +0000 | [diff] [blame] | 403 | pr_err("unable to register hdlc device\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | port->card = NULL; |
| 405 | pci200_pci_remove_one(pdev); |
| 406 | return -ENOBUFS; |
| 407 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | |
Joe Perches | 12a3bfe | 2011-06-26 19:01:28 +0000 | [diff] [blame] | 409 | netdev_info(dev, "PCI200SYN channel %d\n", port->chan); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 410 | } |
| 411 | |
| 412 | sca_flush(card); |
| 413 | return 0; |
| 414 | } |
| 415 | |
| 416 | |
| 417 | |
Alexey Dobriyan | a3aa188 | 2010-01-07 11:58:11 +0000 | [diff] [blame] | 418 | static DEFINE_PCI_DEVICE_TABLE(pci200_pci_tbl) = { |
Krzysztof Halasa | 58a7ce6 | 2006-03-30 17:01:53 +0200 | [diff] [blame] | 419 | { PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050, PCI_VENDOR_ID_PLX, |
Krzysztof Halasa | 58a7ce6 | 2006-03-30 17:01:53 +0200 | [diff] [blame] | 420 | PCI_DEVICE_ID_PLX_PCI200SYN, 0, 0, 0 }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | { 0, } |
| 422 | }; |
| 423 | |
| 424 | |
| 425 | static struct pci_driver pci200_pci_driver = { |
| 426 | .name = "PCI200SYN", |
| 427 | .id_table = pci200_pci_tbl, |
| 428 | .probe = pci200_pci_init_one, |
| 429 | .remove = pci200_pci_remove_one, |
| 430 | }; |
| 431 | |
| 432 | |
| 433 | static int __init pci200_init_module(void) |
| 434 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | if (pci_clock_freq < 1000000 || pci_clock_freq > 80000000) { |
Joe Perches | 12a3bfe | 2011-06-26 19:01:28 +0000 | [diff] [blame] | 436 | pr_err("Invalid PCI clock frequency\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | return -EINVAL; |
| 438 | } |
Jeff Garzik | 2991762 | 2006-08-19 17:48:59 -0400 | [diff] [blame] | 439 | return pci_register_driver(&pci200_pci_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 440 | } |
| 441 | |
| 442 | |
| 443 | |
| 444 | static void __exit pci200_cleanup_module(void) |
| 445 | { |
| 446 | pci_unregister_driver(&pci200_pci_driver); |
| 447 | } |
| 448 | |
| 449 | MODULE_AUTHOR("Krzysztof Halasa <khc@pm.waw.pl>"); |
| 450 | MODULE_DESCRIPTION("Goramo PCI200SYN serial port driver"); |
| 451 | MODULE_LICENSE("GPL v2"); |
| 452 | MODULE_DEVICE_TABLE(pci, pci200_pci_tbl); |
| 453 | module_param(pci_clock_freq, int, 0444); |
| 454 | MODULE_PARM_DESC(pci_clock_freq, "System PCI clock frequency in Hz"); |
| 455 | module_init(pci200_init_module); |
| 456 | module_exit(pci200_cleanup_module); |