Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* $Id: sungem.c,v 1.44.2.22 2002/03/13 01:18:12 davem Exp $ |
| 2 | * sungem.c: Sun GEM ethernet driver. |
| 3 | * |
| 4 | * Copyright (C) 2000, 2001, 2002, 2003 David S. Miller (davem@redhat.com) |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 5 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | * Support for Apple GMAC and assorted PHYs, WOL, Power Management |
| 7 | * (C) 2001,2002,2003 Benjamin Herrenscmidt (benh@kernel.crashing.org) |
| 8 | * (C) 2004,2005 Benjamin Herrenscmidt, IBM Corp. |
| 9 | * |
| 10 | * NAPI and NETPOLL support |
| 11 | * (C) 2004 by Eric Lemoine (eric.lemoine@gmail.com) |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 12 | * |
| 13 | * TODO: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 14 | * - Now that the driver was significantly simplified, I need to rework |
| 15 | * the locking. I'm sure we don't need _2_ spinlocks, and we probably |
| 16 | * can avoid taking most of them for so long period of time (and schedule |
| 17 | * instead). The main issues at this point are caused by the netdev layer |
| 18 | * though: |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 19 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 20 | * gem_change_mtu() and gem_set_multicast() are called with a read_lock() |
| 21 | * help by net/core/dev.c, thus they can't schedule. That means they can't |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 22 | * call napi_disable() neither, thus force gem_poll() to keep a spinlock |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | * where it could have been dropped. change_mtu especially would love also to |
| 24 | * be able to msleep instead of horrid locked delays when resetting the HW, |
| 25 | * but that read_lock() makes it impossible, unless I defer it's action to |
| 26 | * the reset task, which means it'll be asynchronous (won't take effect until |
| 27 | * the system schedules a bit). |
| 28 | * |
| 29 | * Also, it would probably be possible to also remove most of the long-life |
| 30 | * locking in open/resume code path (gem_reinit_chip) by beeing more careful |
| 31 | * about when we can start taking interrupts or get xmit() called... |
| 32 | */ |
| 33 | |
| 34 | #include <linux/module.h> |
| 35 | #include <linux/kernel.h> |
| 36 | #include <linux/types.h> |
| 37 | #include <linux/fcntl.h> |
| 38 | #include <linux/interrupt.h> |
| 39 | #include <linux/ioport.h> |
| 40 | #include <linux/in.h> |
Alexey Dobriyan | d43c36d | 2009-10-07 17:09:06 +0400 | [diff] [blame] | 41 | #include <linux/sched.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | #include <linux/slab.h> |
| 43 | #include <linux/string.h> |
| 44 | #include <linux/delay.h> |
| 45 | #include <linux/init.h> |
| 46 | #include <linux/errno.h> |
| 47 | #include <linux/pci.h> |
Domen Puncer | 1e7f0bd | 2005-06-26 18:22:14 -0400 | [diff] [blame] | 48 | #include <linux/dma-mapping.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | #include <linux/netdevice.h> |
| 50 | #include <linux/etherdevice.h> |
| 51 | #include <linux/skbuff.h> |
| 52 | #include <linux/mii.h> |
| 53 | #include <linux/ethtool.h> |
| 54 | #include <linux/crc32.h> |
| 55 | #include <linux/random.h> |
| 56 | #include <linux/workqueue.h> |
| 57 | #include <linux/if_vlan.h> |
| 58 | #include <linux/bitops.h> |
Ingo Molnar | e3968fc | 2006-03-20 22:34:25 -0800 | [diff] [blame] | 59 | #include <linux/mutex.h> |
Al Viro | d7fe0f2 | 2006-12-03 23:15:30 -0500 | [diff] [blame] | 60 | #include <linux/mm.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | |
| 62 | #include <asm/system.h> |
| 63 | #include <asm/io.h> |
| 64 | #include <asm/byteorder.h> |
| 65 | #include <asm/uaccess.h> |
| 66 | #include <asm/irq.h> |
| 67 | |
David S. Miller | dadb830 | 2007-02-28 15:42:50 -0800 | [diff] [blame] | 68 | #ifdef CONFIG_SPARC |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | #include <asm/idprom.h> |
David S. Miller | 457e1a8 | 2007-03-29 01:36:44 -0700 | [diff] [blame] | 70 | #include <asm/prom.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | #endif |
| 72 | |
| 73 | #ifdef CONFIG_PPC_PMAC |
| 74 | #include <asm/pci-bridge.h> |
| 75 | #include <asm/prom.h> |
| 76 | #include <asm/machdep.h> |
| 77 | #include <asm/pmac_feature.h> |
| 78 | #endif |
| 79 | |
| 80 | #include "sungem_phy.h" |
| 81 | #include "sungem.h" |
| 82 | |
| 83 | /* Stripping FCS is causing problems, disabled for now */ |
| 84 | #undef STRIP_FCS |
| 85 | |
| 86 | #define DEFAULT_MSG (NETIF_MSG_DRV | \ |
| 87 | NETIF_MSG_PROBE | \ |
| 88 | NETIF_MSG_LINK) |
| 89 | |
| 90 | #define ADVERTISE_MASK (SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full | \ |
| 91 | SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full | \ |
Benjamin Herrenschmidt | 63ea998 | 2007-01-03 18:54:43 -0800 | [diff] [blame] | 92 | SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full | \ |
| 93 | SUPPORTED_Pause | SUPPORTED_Autoneg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | |
| 95 | #define DRV_NAME "sungem" |
| 96 | #define DRV_VERSION "0.98" |
| 97 | #define DRV_RELDATE "8/24/03" |
| 98 | #define DRV_AUTHOR "David S. Miller (davem@redhat.com)" |
| 99 | |
| 100 | static char version[] __devinitdata = |
| 101 | DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE " " DRV_AUTHOR "\n"; |
| 102 | |
| 103 | MODULE_AUTHOR(DRV_AUTHOR); |
| 104 | MODULE_DESCRIPTION("Sun GEM Gbit ethernet driver"); |
| 105 | MODULE_LICENSE("GPL"); |
| 106 | |
| 107 | #define GEM_MODULE_NAME "gem" |
| 108 | #define PFX GEM_MODULE_NAME ": " |
| 109 | |
Alexey Dobriyan | a3aa188 | 2010-01-07 11:58:11 +0000 | [diff] [blame] | 110 | static DEFINE_PCI_DEVICE_TABLE(gem_pci_tbl) = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | { PCI_VENDOR_ID_SUN, PCI_DEVICE_ID_SUN_GEM, |
| 112 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, |
| 113 | |
| 114 | /* These models only differ from the original GEM in |
| 115 | * that their tx/rx fifos are of a different size and |
| 116 | * they only support 10/100 speeds. -DaveM |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 117 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | * Apple's GMAC does support gigabit on machines with |
| 119 | * the BCM54xx PHYs. -BenH |
| 120 | */ |
| 121 | { PCI_VENDOR_ID_SUN, PCI_DEVICE_ID_SUN_RIO_GEM, |
| 122 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, |
| 123 | { PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_UNI_N_GMAC, |
| 124 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, |
| 125 | { PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_UNI_N_GMACP, |
| 126 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, |
| 127 | { PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_UNI_N_GMAC2, |
| 128 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, |
| 129 | { PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_K2_GMAC, |
| 130 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, |
| 131 | { PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_SH_SUNGEM, |
| 132 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, |
Olof Johansson | 7fce260 | 2005-11-13 16:06:48 -0800 | [diff] [blame] | 133 | { PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_IPID2_GMAC, |
| 134 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | {0, } |
| 136 | }; |
| 137 | |
| 138 | MODULE_DEVICE_TABLE(pci, gem_pci_tbl); |
| 139 | |
| 140 | static u16 __phy_read(struct gem *gp, int phy_addr, int reg) |
| 141 | { |
| 142 | u32 cmd; |
| 143 | int limit = 10000; |
| 144 | |
| 145 | cmd = (1 << 30); |
| 146 | cmd |= (2 << 28); |
| 147 | cmd |= (phy_addr << 23) & MIF_FRAME_PHYAD; |
| 148 | cmd |= (reg << 18) & MIF_FRAME_REGAD; |
| 149 | cmd |= (MIF_FRAME_TAMSB); |
| 150 | writel(cmd, gp->regs + MIF_FRAME); |
| 151 | |
Roel Kluin | 46578a69 | 2009-02-02 21:39:02 -0800 | [diff] [blame] | 152 | while (--limit) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | cmd = readl(gp->regs + MIF_FRAME); |
| 154 | if (cmd & MIF_FRAME_TALSB) |
| 155 | break; |
| 156 | |
| 157 | udelay(10); |
| 158 | } |
| 159 | |
| 160 | if (!limit) |
| 161 | cmd = 0xffff; |
| 162 | |
| 163 | return cmd & MIF_FRAME_DATA; |
| 164 | } |
| 165 | |
| 166 | static inline int _phy_read(struct net_device *dev, int mii_id, int reg) |
| 167 | { |
Wang Chen | 8f15ea4 | 2008-11-12 23:38:36 -0800 | [diff] [blame] | 168 | struct gem *gp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | return __phy_read(gp, mii_id, reg); |
| 170 | } |
| 171 | |
| 172 | static inline u16 phy_read(struct gem *gp, int reg) |
| 173 | { |
| 174 | return __phy_read(gp, gp->mii_phy_addr, reg); |
| 175 | } |
| 176 | |
| 177 | static void __phy_write(struct gem *gp, int phy_addr, int reg, u16 val) |
| 178 | { |
| 179 | u32 cmd; |
| 180 | int limit = 10000; |
| 181 | |
| 182 | cmd = (1 << 30); |
| 183 | cmd |= (1 << 28); |
| 184 | cmd |= (phy_addr << 23) & MIF_FRAME_PHYAD; |
| 185 | cmd |= (reg << 18) & MIF_FRAME_REGAD; |
| 186 | cmd |= (MIF_FRAME_TAMSB); |
| 187 | cmd |= (val & MIF_FRAME_DATA); |
| 188 | writel(cmd, gp->regs + MIF_FRAME); |
| 189 | |
| 190 | while (limit--) { |
| 191 | cmd = readl(gp->regs + MIF_FRAME); |
| 192 | if (cmd & MIF_FRAME_TALSB) |
| 193 | break; |
| 194 | |
| 195 | udelay(10); |
| 196 | } |
| 197 | } |
| 198 | |
| 199 | static inline void _phy_write(struct net_device *dev, int mii_id, int reg, int val) |
| 200 | { |
Wang Chen | 8f15ea4 | 2008-11-12 23:38:36 -0800 | [diff] [blame] | 201 | struct gem *gp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | __phy_write(gp, mii_id, reg, val & 0xffff); |
| 203 | } |
| 204 | |
| 205 | static inline void phy_write(struct gem *gp, int reg, u16 val) |
| 206 | { |
| 207 | __phy_write(gp, gp->mii_phy_addr, reg, val); |
| 208 | } |
| 209 | |
| 210 | static inline void gem_enable_ints(struct gem *gp) |
| 211 | { |
| 212 | /* Enable all interrupts but TXDONE */ |
| 213 | writel(GREG_STAT_TXDONE, gp->regs + GREG_IMASK); |
| 214 | } |
| 215 | |
| 216 | static inline void gem_disable_ints(struct gem *gp) |
| 217 | { |
| 218 | /* Disable all interrupts, including TXDONE */ |
| 219 | writel(GREG_STAT_NAPI | GREG_STAT_TXDONE, gp->regs + GREG_IMASK); |
| 220 | } |
| 221 | |
| 222 | static void gem_get_cell(struct gem *gp) |
| 223 | { |
| 224 | BUG_ON(gp->cell_enabled < 0); |
| 225 | gp->cell_enabled++; |
| 226 | #ifdef CONFIG_PPC_PMAC |
| 227 | if (gp->cell_enabled == 1) { |
| 228 | mb(); |
| 229 | pmac_call_feature(PMAC_FTR_GMAC_ENABLE, gp->of_node, 0, 1); |
| 230 | udelay(10); |
| 231 | } |
| 232 | #endif /* CONFIG_PPC_PMAC */ |
| 233 | } |
| 234 | |
| 235 | /* Turn off the chip's clock */ |
| 236 | static void gem_put_cell(struct gem *gp) |
| 237 | { |
| 238 | BUG_ON(gp->cell_enabled <= 0); |
| 239 | gp->cell_enabled--; |
| 240 | #ifdef CONFIG_PPC_PMAC |
| 241 | if (gp->cell_enabled == 0) { |
| 242 | mb(); |
| 243 | pmac_call_feature(PMAC_FTR_GMAC_ENABLE, gp->of_node, 0, 0); |
| 244 | udelay(10); |
| 245 | } |
| 246 | #endif /* CONFIG_PPC_PMAC */ |
| 247 | } |
| 248 | |
| 249 | static void gem_handle_mif_event(struct gem *gp, u32 reg_val, u32 changed_bits) |
| 250 | { |
| 251 | if (netif_msg_intr(gp)) |
| 252 | printk(KERN_DEBUG "%s: mif interrupt\n", gp->dev->name); |
| 253 | } |
| 254 | |
| 255 | static int gem_pcs_interrupt(struct net_device *dev, struct gem *gp, u32 gem_status) |
| 256 | { |
| 257 | u32 pcs_istat = readl(gp->regs + PCS_ISTAT); |
| 258 | u32 pcs_miistat; |
| 259 | |
| 260 | if (netif_msg_intr(gp)) |
| 261 | printk(KERN_DEBUG "%s: pcs interrupt, pcs_istat: 0x%x\n", |
| 262 | gp->dev->name, pcs_istat); |
| 263 | |
| 264 | if (!(pcs_istat & PCS_ISTAT_LSC)) { |
| 265 | printk(KERN_ERR "%s: PCS irq but no link status change???\n", |
| 266 | dev->name); |
| 267 | return 0; |
| 268 | } |
| 269 | |
| 270 | /* The link status bit latches on zero, so you must |
| 271 | * read it twice in such a case to see a transition |
| 272 | * to the link being up. |
| 273 | */ |
| 274 | pcs_miistat = readl(gp->regs + PCS_MIISTAT); |
| 275 | if (!(pcs_miistat & PCS_MIISTAT_LS)) |
| 276 | pcs_miistat |= |
| 277 | (readl(gp->regs + PCS_MIISTAT) & |
| 278 | PCS_MIISTAT_LS); |
| 279 | |
| 280 | if (pcs_miistat & PCS_MIISTAT_ANC) { |
| 281 | /* The remote-fault indication is only valid |
| 282 | * when autoneg has completed. |
| 283 | */ |
| 284 | if (pcs_miistat & PCS_MIISTAT_RF) |
| 285 | printk(KERN_INFO "%s: PCS AutoNEG complete, " |
| 286 | "RemoteFault\n", dev->name); |
| 287 | else |
| 288 | printk(KERN_INFO "%s: PCS AutoNEG complete.\n", |
| 289 | dev->name); |
| 290 | } |
| 291 | |
| 292 | if (pcs_miistat & PCS_MIISTAT_LS) { |
| 293 | printk(KERN_INFO "%s: PCS link is now up.\n", |
| 294 | dev->name); |
| 295 | netif_carrier_on(gp->dev); |
| 296 | } else { |
| 297 | printk(KERN_INFO "%s: PCS link is now down.\n", |
| 298 | dev->name); |
| 299 | netif_carrier_off(gp->dev); |
| 300 | /* If this happens and the link timer is not running, |
| 301 | * reset so we re-negotiate. |
| 302 | */ |
| 303 | if (!timer_pending(&gp->link_timer)) |
| 304 | return 1; |
| 305 | } |
| 306 | |
| 307 | return 0; |
| 308 | } |
| 309 | |
| 310 | static int gem_txmac_interrupt(struct net_device *dev, struct gem *gp, u32 gem_status) |
| 311 | { |
| 312 | u32 txmac_stat = readl(gp->regs + MAC_TXSTAT); |
| 313 | |
| 314 | if (netif_msg_intr(gp)) |
| 315 | printk(KERN_DEBUG "%s: txmac interrupt, txmac_stat: 0x%x\n", |
| 316 | gp->dev->name, txmac_stat); |
| 317 | |
| 318 | /* Defer timer expiration is quite normal, |
| 319 | * don't even log the event. |
| 320 | */ |
| 321 | if ((txmac_stat & MAC_TXSTAT_DTE) && |
| 322 | !(txmac_stat & ~MAC_TXSTAT_DTE)) |
| 323 | return 0; |
| 324 | |
| 325 | if (txmac_stat & MAC_TXSTAT_URUN) { |
| 326 | printk(KERN_ERR "%s: TX MAC xmit underrun.\n", |
| 327 | dev->name); |
| 328 | gp->net_stats.tx_fifo_errors++; |
| 329 | } |
| 330 | |
| 331 | if (txmac_stat & MAC_TXSTAT_MPE) { |
| 332 | printk(KERN_ERR "%s: TX MAC max packet size error.\n", |
| 333 | dev->name); |
| 334 | gp->net_stats.tx_errors++; |
| 335 | } |
| 336 | |
| 337 | /* The rest are all cases of one of the 16-bit TX |
| 338 | * counters expiring. |
| 339 | */ |
| 340 | if (txmac_stat & MAC_TXSTAT_NCE) |
| 341 | gp->net_stats.collisions += 0x10000; |
| 342 | |
| 343 | if (txmac_stat & MAC_TXSTAT_ECE) { |
| 344 | gp->net_stats.tx_aborted_errors += 0x10000; |
| 345 | gp->net_stats.collisions += 0x10000; |
| 346 | } |
| 347 | |
| 348 | if (txmac_stat & MAC_TXSTAT_LCE) { |
| 349 | gp->net_stats.tx_aborted_errors += 0x10000; |
| 350 | gp->net_stats.collisions += 0x10000; |
| 351 | } |
| 352 | |
| 353 | /* We do not keep track of MAC_TXSTAT_FCE and |
| 354 | * MAC_TXSTAT_PCE events. |
| 355 | */ |
| 356 | return 0; |
| 357 | } |
| 358 | |
| 359 | /* When we get a RX fifo overflow, the RX unit in GEM is probably hung |
| 360 | * so we do the following. |
| 361 | * |
| 362 | * If any part of the reset goes wrong, we return 1 and that causes the |
| 363 | * whole chip to be reset. |
| 364 | */ |
| 365 | static int gem_rxmac_reset(struct gem *gp) |
| 366 | { |
| 367 | struct net_device *dev = gp->dev; |
| 368 | int limit, i; |
| 369 | u64 desc_dma; |
| 370 | u32 val; |
| 371 | |
| 372 | /* First, reset & disable MAC RX. */ |
| 373 | writel(MAC_RXRST_CMD, gp->regs + MAC_RXRST); |
| 374 | for (limit = 0; limit < 5000; limit++) { |
| 375 | if (!(readl(gp->regs + MAC_RXRST) & MAC_RXRST_CMD)) |
| 376 | break; |
| 377 | udelay(10); |
| 378 | } |
| 379 | if (limit == 5000) { |
| 380 | printk(KERN_ERR "%s: RX MAC will not reset, resetting whole " |
| 381 | "chip.\n", dev->name); |
| 382 | return 1; |
| 383 | } |
| 384 | |
| 385 | writel(gp->mac_rx_cfg & ~MAC_RXCFG_ENAB, |
| 386 | gp->regs + MAC_RXCFG); |
| 387 | for (limit = 0; limit < 5000; limit++) { |
| 388 | if (!(readl(gp->regs + MAC_RXCFG) & MAC_RXCFG_ENAB)) |
| 389 | break; |
| 390 | udelay(10); |
| 391 | } |
| 392 | if (limit == 5000) { |
| 393 | printk(KERN_ERR "%s: RX MAC will not disable, resetting whole " |
| 394 | "chip.\n", dev->name); |
| 395 | return 1; |
| 396 | } |
| 397 | |
| 398 | /* Second, disable RX DMA. */ |
| 399 | writel(0, gp->regs + RXDMA_CFG); |
| 400 | for (limit = 0; limit < 5000; limit++) { |
| 401 | if (!(readl(gp->regs + RXDMA_CFG) & RXDMA_CFG_ENABLE)) |
| 402 | break; |
| 403 | udelay(10); |
| 404 | } |
| 405 | if (limit == 5000) { |
| 406 | printk(KERN_ERR "%s: RX DMA will not disable, resetting whole " |
| 407 | "chip.\n", dev->name); |
| 408 | return 1; |
| 409 | } |
| 410 | |
| 411 | udelay(5000); |
| 412 | |
| 413 | /* Execute RX reset command. */ |
| 414 | writel(gp->swrst_base | GREG_SWRST_RXRST, |
| 415 | gp->regs + GREG_SWRST); |
| 416 | for (limit = 0; limit < 5000; limit++) { |
| 417 | if (!(readl(gp->regs + GREG_SWRST) & GREG_SWRST_RXRST)) |
| 418 | break; |
| 419 | udelay(10); |
| 420 | } |
| 421 | if (limit == 5000) { |
| 422 | printk(KERN_ERR "%s: RX reset command will not execute, resetting " |
| 423 | "whole chip.\n", dev->name); |
| 424 | return 1; |
| 425 | } |
| 426 | |
| 427 | /* Refresh the RX ring. */ |
| 428 | for (i = 0; i < RX_RING_SIZE; i++) { |
| 429 | struct gem_rxd *rxd = &gp->init_block->rxd[i]; |
| 430 | |
| 431 | if (gp->rx_skbs[i] == NULL) { |
| 432 | printk(KERN_ERR "%s: Parts of RX ring empty, resetting " |
| 433 | "whole chip.\n", dev->name); |
| 434 | return 1; |
| 435 | } |
| 436 | |
| 437 | rxd->status_word = cpu_to_le64(RXDCTRL_FRESH(gp)); |
| 438 | } |
| 439 | gp->rx_new = gp->rx_old = 0; |
| 440 | |
| 441 | /* Now we must reprogram the rest of RX unit. */ |
| 442 | desc_dma = (u64) gp->gblock_dvma; |
| 443 | desc_dma += (INIT_BLOCK_TX_RING_SIZE * sizeof(struct gem_txd)); |
| 444 | writel(desc_dma >> 32, gp->regs + RXDMA_DBHI); |
| 445 | writel(desc_dma & 0xffffffff, gp->regs + RXDMA_DBLOW); |
| 446 | writel(RX_RING_SIZE - 4, gp->regs + RXDMA_KICK); |
| 447 | val = (RXDMA_CFG_BASE | (RX_OFFSET << 10) | |
| 448 | ((14 / 2) << 13) | RXDMA_CFG_FTHRESH_128); |
| 449 | writel(val, gp->regs + RXDMA_CFG); |
| 450 | if (readl(gp->regs + GREG_BIFCFG) & GREG_BIFCFG_M66EN) |
| 451 | writel(((5 & RXDMA_BLANK_IPKTS) | |
| 452 | ((8 << 12) & RXDMA_BLANK_ITIME)), |
| 453 | gp->regs + RXDMA_BLANK); |
| 454 | else |
| 455 | writel(((5 & RXDMA_BLANK_IPKTS) | |
| 456 | ((4 << 12) & RXDMA_BLANK_ITIME)), |
| 457 | gp->regs + RXDMA_BLANK); |
| 458 | val = (((gp->rx_pause_off / 64) << 0) & RXDMA_PTHRESH_OFF); |
| 459 | val |= (((gp->rx_pause_on / 64) << 12) & RXDMA_PTHRESH_ON); |
| 460 | writel(val, gp->regs + RXDMA_PTHRESH); |
| 461 | val = readl(gp->regs + RXDMA_CFG); |
| 462 | writel(val | RXDMA_CFG_ENABLE, gp->regs + RXDMA_CFG); |
| 463 | writel(MAC_RXSTAT_RCV, gp->regs + MAC_RXMASK); |
| 464 | val = readl(gp->regs + MAC_RXCFG); |
| 465 | writel(val | MAC_RXCFG_ENAB, gp->regs + MAC_RXCFG); |
| 466 | |
| 467 | return 0; |
| 468 | } |
| 469 | |
| 470 | static int gem_rxmac_interrupt(struct net_device *dev, struct gem *gp, u32 gem_status) |
| 471 | { |
| 472 | u32 rxmac_stat = readl(gp->regs + MAC_RXSTAT); |
| 473 | int ret = 0; |
| 474 | |
| 475 | if (netif_msg_intr(gp)) |
| 476 | printk(KERN_DEBUG "%s: rxmac interrupt, rxmac_stat: 0x%x\n", |
| 477 | gp->dev->name, rxmac_stat); |
| 478 | |
| 479 | if (rxmac_stat & MAC_RXSTAT_OFLW) { |
| 480 | u32 smac = readl(gp->regs + MAC_SMACHINE); |
| 481 | |
| 482 | printk(KERN_ERR "%s: RX MAC fifo overflow smac[%08x].\n", |
| 483 | dev->name, smac); |
| 484 | gp->net_stats.rx_over_errors++; |
| 485 | gp->net_stats.rx_fifo_errors++; |
| 486 | |
| 487 | ret = gem_rxmac_reset(gp); |
| 488 | } |
| 489 | |
| 490 | if (rxmac_stat & MAC_RXSTAT_ACE) |
| 491 | gp->net_stats.rx_frame_errors += 0x10000; |
| 492 | |
| 493 | if (rxmac_stat & MAC_RXSTAT_CCE) |
| 494 | gp->net_stats.rx_crc_errors += 0x10000; |
| 495 | |
| 496 | if (rxmac_stat & MAC_RXSTAT_LCE) |
| 497 | gp->net_stats.rx_length_errors += 0x10000; |
| 498 | |
| 499 | /* We do not track MAC_RXSTAT_FCE and MAC_RXSTAT_VCE |
| 500 | * events. |
| 501 | */ |
| 502 | return ret; |
| 503 | } |
| 504 | |
| 505 | static int gem_mac_interrupt(struct net_device *dev, struct gem *gp, u32 gem_status) |
| 506 | { |
| 507 | u32 mac_cstat = readl(gp->regs + MAC_CSTAT); |
| 508 | |
| 509 | if (netif_msg_intr(gp)) |
| 510 | printk(KERN_DEBUG "%s: mac interrupt, mac_cstat: 0x%x\n", |
| 511 | gp->dev->name, mac_cstat); |
| 512 | |
| 513 | /* This interrupt is just for pause frame and pause |
| 514 | * tracking. It is useful for diagnostics and debug |
| 515 | * but probably by default we will mask these events. |
| 516 | */ |
| 517 | if (mac_cstat & MAC_CSTAT_PS) |
| 518 | gp->pause_entered++; |
| 519 | |
| 520 | if (mac_cstat & MAC_CSTAT_PRCV) |
| 521 | gp->pause_last_time_recvd = (mac_cstat >> 16); |
| 522 | |
| 523 | return 0; |
| 524 | } |
| 525 | |
| 526 | static int gem_mif_interrupt(struct net_device *dev, struct gem *gp, u32 gem_status) |
| 527 | { |
| 528 | u32 mif_status = readl(gp->regs + MIF_STATUS); |
| 529 | u32 reg_val, changed_bits; |
| 530 | |
| 531 | reg_val = (mif_status & MIF_STATUS_DATA) >> 16; |
| 532 | changed_bits = (mif_status & MIF_STATUS_STAT); |
| 533 | |
| 534 | gem_handle_mif_event(gp, reg_val, changed_bits); |
| 535 | |
| 536 | return 0; |
| 537 | } |
| 538 | |
| 539 | static int gem_pci_interrupt(struct net_device *dev, struct gem *gp, u32 gem_status) |
| 540 | { |
| 541 | u32 pci_estat = readl(gp->regs + GREG_PCIESTAT); |
| 542 | |
| 543 | if (gp->pdev->vendor == PCI_VENDOR_ID_SUN && |
| 544 | gp->pdev->device == PCI_DEVICE_ID_SUN_GEM) { |
| 545 | printk(KERN_ERR "%s: PCI error [%04x] ", |
| 546 | dev->name, pci_estat); |
| 547 | |
| 548 | if (pci_estat & GREG_PCIESTAT_BADACK) |
| 549 | printk("<No ACK64# during ABS64 cycle> "); |
| 550 | if (pci_estat & GREG_PCIESTAT_DTRTO) |
| 551 | printk("<Delayed transaction timeout> "); |
| 552 | if (pci_estat & GREG_PCIESTAT_OTHER) |
| 553 | printk("<other>"); |
| 554 | printk("\n"); |
| 555 | } else { |
| 556 | pci_estat |= GREG_PCIESTAT_OTHER; |
| 557 | printk(KERN_ERR "%s: PCI error\n", dev->name); |
| 558 | } |
| 559 | |
| 560 | if (pci_estat & GREG_PCIESTAT_OTHER) { |
| 561 | u16 pci_cfg_stat; |
| 562 | |
| 563 | /* Interrogate PCI config space for the |
| 564 | * true cause. |
| 565 | */ |
| 566 | pci_read_config_word(gp->pdev, PCI_STATUS, |
| 567 | &pci_cfg_stat); |
| 568 | printk(KERN_ERR "%s: Read PCI cfg space status [%04x]\n", |
| 569 | dev->name, pci_cfg_stat); |
| 570 | if (pci_cfg_stat & PCI_STATUS_PARITY) |
| 571 | printk(KERN_ERR "%s: PCI parity error detected.\n", |
| 572 | dev->name); |
| 573 | if (pci_cfg_stat & PCI_STATUS_SIG_TARGET_ABORT) |
| 574 | printk(KERN_ERR "%s: PCI target abort.\n", |
| 575 | dev->name); |
| 576 | if (pci_cfg_stat & PCI_STATUS_REC_TARGET_ABORT) |
| 577 | printk(KERN_ERR "%s: PCI master acks target abort.\n", |
| 578 | dev->name); |
| 579 | if (pci_cfg_stat & PCI_STATUS_REC_MASTER_ABORT) |
| 580 | printk(KERN_ERR "%s: PCI master abort.\n", |
| 581 | dev->name); |
| 582 | if (pci_cfg_stat & PCI_STATUS_SIG_SYSTEM_ERROR) |
| 583 | printk(KERN_ERR "%s: PCI system error SERR#.\n", |
| 584 | dev->name); |
| 585 | if (pci_cfg_stat & PCI_STATUS_DETECTED_PARITY) |
| 586 | printk(KERN_ERR "%s: PCI parity error.\n", |
| 587 | dev->name); |
| 588 | |
| 589 | /* Write the error bits back to clear them. */ |
| 590 | pci_cfg_stat &= (PCI_STATUS_PARITY | |
| 591 | PCI_STATUS_SIG_TARGET_ABORT | |
| 592 | PCI_STATUS_REC_TARGET_ABORT | |
| 593 | PCI_STATUS_REC_MASTER_ABORT | |
| 594 | PCI_STATUS_SIG_SYSTEM_ERROR | |
| 595 | PCI_STATUS_DETECTED_PARITY); |
| 596 | pci_write_config_word(gp->pdev, |
| 597 | PCI_STATUS, pci_cfg_stat); |
| 598 | } |
| 599 | |
| 600 | /* For all PCI errors, we should reset the chip. */ |
| 601 | return 1; |
| 602 | } |
| 603 | |
| 604 | /* All non-normal interrupt conditions get serviced here. |
| 605 | * Returns non-zero if we should just exit the interrupt |
| 606 | * handler right now (ie. if we reset the card which invalidates |
| 607 | * all of the other original irq status bits). |
| 608 | */ |
| 609 | static int gem_abnormal_irq(struct net_device *dev, struct gem *gp, u32 gem_status) |
| 610 | { |
| 611 | if (gem_status & GREG_STAT_RXNOBUF) { |
| 612 | /* Frame arrived, no free RX buffers available. */ |
| 613 | if (netif_msg_rx_err(gp)) |
| 614 | printk(KERN_DEBUG "%s: no buffer for rx frame\n", |
| 615 | gp->dev->name); |
| 616 | gp->net_stats.rx_dropped++; |
| 617 | } |
| 618 | |
| 619 | if (gem_status & GREG_STAT_RXTAGERR) { |
| 620 | /* corrupt RX tag framing */ |
| 621 | if (netif_msg_rx_err(gp)) |
| 622 | printk(KERN_DEBUG "%s: corrupt rx tag framing\n", |
| 623 | gp->dev->name); |
| 624 | gp->net_stats.rx_errors++; |
| 625 | |
| 626 | goto do_reset; |
| 627 | } |
| 628 | |
| 629 | if (gem_status & GREG_STAT_PCS) { |
| 630 | if (gem_pcs_interrupt(dev, gp, gem_status)) |
| 631 | goto do_reset; |
| 632 | } |
| 633 | |
| 634 | if (gem_status & GREG_STAT_TXMAC) { |
| 635 | if (gem_txmac_interrupt(dev, gp, gem_status)) |
| 636 | goto do_reset; |
| 637 | } |
| 638 | |
| 639 | if (gem_status & GREG_STAT_RXMAC) { |
| 640 | if (gem_rxmac_interrupt(dev, gp, gem_status)) |
| 641 | goto do_reset; |
| 642 | } |
| 643 | |
| 644 | if (gem_status & GREG_STAT_MAC) { |
| 645 | if (gem_mac_interrupt(dev, gp, gem_status)) |
| 646 | goto do_reset; |
| 647 | } |
| 648 | |
| 649 | if (gem_status & GREG_STAT_MIF) { |
| 650 | if (gem_mif_interrupt(dev, gp, gem_status)) |
| 651 | goto do_reset; |
| 652 | } |
| 653 | |
| 654 | if (gem_status & GREG_STAT_PCIERR) { |
| 655 | if (gem_pci_interrupt(dev, gp, gem_status)) |
| 656 | goto do_reset; |
| 657 | } |
| 658 | |
| 659 | return 0; |
| 660 | |
| 661 | do_reset: |
| 662 | gp->reset_task_pending = 1; |
| 663 | schedule_work(&gp->reset_task); |
| 664 | |
| 665 | return 1; |
| 666 | } |
| 667 | |
| 668 | static __inline__ void gem_tx(struct net_device *dev, struct gem *gp, u32 gem_status) |
| 669 | { |
| 670 | int entry, limit; |
| 671 | |
| 672 | if (netif_msg_intr(gp)) |
| 673 | printk(KERN_DEBUG "%s: tx interrupt, gem_status: 0x%x\n", |
| 674 | gp->dev->name, gem_status); |
| 675 | |
| 676 | entry = gp->tx_old; |
| 677 | limit = ((gem_status & GREG_STAT_TXNR) >> GREG_STAT_TXNR_SHIFT); |
| 678 | while (entry != limit) { |
| 679 | struct sk_buff *skb; |
| 680 | struct gem_txd *txd; |
| 681 | dma_addr_t dma_addr; |
| 682 | u32 dma_len; |
| 683 | int frag; |
| 684 | |
| 685 | if (netif_msg_tx_done(gp)) |
| 686 | printk(KERN_DEBUG "%s: tx done, slot %d\n", |
| 687 | gp->dev->name, entry); |
| 688 | skb = gp->tx_skbs[entry]; |
| 689 | if (skb_shinfo(skb)->nr_frags) { |
| 690 | int last = entry + skb_shinfo(skb)->nr_frags; |
| 691 | int walk = entry; |
| 692 | int incomplete = 0; |
| 693 | |
| 694 | last &= (TX_RING_SIZE - 1); |
| 695 | for (;;) { |
| 696 | walk = NEXT_TX(walk); |
| 697 | if (walk == limit) |
| 698 | incomplete = 1; |
| 699 | if (walk == last) |
| 700 | break; |
| 701 | } |
| 702 | if (incomplete) |
| 703 | break; |
| 704 | } |
| 705 | gp->tx_skbs[entry] = NULL; |
| 706 | gp->net_stats.tx_bytes += skb->len; |
| 707 | |
| 708 | for (frag = 0; frag <= skb_shinfo(skb)->nr_frags; frag++) { |
| 709 | txd = &gp->init_block->txd[entry]; |
| 710 | |
| 711 | dma_addr = le64_to_cpu(txd->buffer); |
| 712 | dma_len = le64_to_cpu(txd->control_word) & TXDCTRL_BUFSZ; |
| 713 | |
| 714 | pci_unmap_page(gp->pdev, dma_addr, dma_len, PCI_DMA_TODEVICE); |
| 715 | entry = NEXT_TX(entry); |
| 716 | } |
| 717 | |
| 718 | gp->net_stats.tx_packets++; |
| 719 | dev_kfree_skb_irq(skb); |
| 720 | } |
| 721 | gp->tx_old = entry; |
| 722 | |
| 723 | if (netif_queue_stopped(dev) && |
| 724 | TX_BUFFS_AVAIL(gp) > (MAX_SKB_FRAGS + 1)) |
| 725 | netif_wake_queue(dev); |
| 726 | } |
| 727 | |
| 728 | static __inline__ void gem_post_rxds(struct gem *gp, int limit) |
| 729 | { |
| 730 | int cluster_start, curr, count, kick; |
| 731 | |
| 732 | cluster_start = curr = (gp->rx_new & ~(4 - 1)); |
| 733 | count = 0; |
| 734 | kick = -1; |
| 735 | wmb(); |
| 736 | while (curr != limit) { |
| 737 | curr = NEXT_RX(curr); |
| 738 | if (++count == 4) { |
| 739 | struct gem_rxd *rxd = |
| 740 | &gp->init_block->rxd[cluster_start]; |
| 741 | for (;;) { |
| 742 | rxd->status_word = cpu_to_le64(RXDCTRL_FRESH(gp)); |
| 743 | rxd++; |
| 744 | cluster_start = NEXT_RX(cluster_start); |
| 745 | if (cluster_start == curr) |
| 746 | break; |
| 747 | } |
| 748 | kick = curr; |
| 749 | count = 0; |
| 750 | } |
| 751 | } |
| 752 | if (kick >= 0) { |
| 753 | mb(); |
| 754 | writel(kick, gp->regs + RXDMA_KICK); |
| 755 | } |
| 756 | } |
| 757 | |
| 758 | static int gem_rx(struct gem *gp, int work_to_do) |
| 759 | { |
| 760 | int entry, drops, work_done = 0; |
| 761 | u32 done; |
Al Viro | 439104b | 2007-12-17 06:48:04 +0000 | [diff] [blame] | 762 | __sum16 csum; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | |
| 764 | if (netif_msg_rx_status(gp)) |
| 765 | printk(KERN_DEBUG "%s: rx interrupt, done: %d, rx_new: %d\n", |
| 766 | gp->dev->name, readl(gp->regs + RXDMA_DONE), gp->rx_new); |
| 767 | |
| 768 | entry = gp->rx_new; |
| 769 | drops = 0; |
| 770 | done = readl(gp->regs + RXDMA_DONE); |
| 771 | for (;;) { |
| 772 | struct gem_rxd *rxd = &gp->init_block->rxd[entry]; |
| 773 | struct sk_buff *skb; |
Al Viro | 439104b | 2007-12-17 06:48:04 +0000 | [diff] [blame] | 774 | u64 status = le64_to_cpu(rxd->status_word); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 775 | dma_addr_t dma_addr; |
| 776 | int len; |
| 777 | |
| 778 | if ((status & RXDCTRL_OWN) != 0) |
| 779 | break; |
| 780 | |
| 781 | if (work_done >= RX_RING_SIZE || work_done >= work_to_do) |
| 782 | break; |
| 783 | |
| 784 | /* When writing back RX descriptor, GEM writes status |
| 785 | * then buffer address, possibly in seperate transactions. |
| 786 | * If we don't wait for the chip to write both, we could |
| 787 | * post a new buffer to this descriptor then have GEM spam |
| 788 | * on the buffer address. We sync on the RX completion |
| 789 | * register to prevent this from happening. |
| 790 | */ |
| 791 | if (entry == done) { |
| 792 | done = readl(gp->regs + RXDMA_DONE); |
| 793 | if (entry == done) |
| 794 | break; |
| 795 | } |
| 796 | |
| 797 | /* We can now account for the work we're about to do */ |
| 798 | work_done++; |
| 799 | |
| 800 | skb = gp->rx_skbs[entry]; |
| 801 | |
| 802 | len = (status & RXDCTRL_BUFSZ) >> 16; |
| 803 | if ((len < ETH_ZLEN) || (status & RXDCTRL_BAD)) { |
| 804 | gp->net_stats.rx_errors++; |
| 805 | if (len < ETH_ZLEN) |
| 806 | gp->net_stats.rx_length_errors++; |
| 807 | if (len & RXDCTRL_BAD) |
| 808 | gp->net_stats.rx_crc_errors++; |
| 809 | |
| 810 | /* We'll just return it to GEM. */ |
| 811 | drop_it: |
| 812 | gp->net_stats.rx_dropped++; |
| 813 | goto next; |
| 814 | } |
| 815 | |
Al Viro | 439104b | 2007-12-17 06:48:04 +0000 | [diff] [blame] | 816 | dma_addr = le64_to_cpu(rxd->buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 817 | if (len > RX_COPY_THRESHOLD) { |
| 818 | struct sk_buff *new_skb; |
| 819 | |
| 820 | new_skb = gem_alloc_skb(RX_BUF_ALLOC_SIZE(gp), GFP_ATOMIC); |
| 821 | if (new_skb == NULL) { |
| 822 | drops++; |
| 823 | goto drop_it; |
| 824 | } |
| 825 | pci_unmap_page(gp->pdev, dma_addr, |
| 826 | RX_BUF_ALLOC_SIZE(gp), |
| 827 | PCI_DMA_FROMDEVICE); |
| 828 | gp->rx_skbs[entry] = new_skb; |
| 829 | new_skb->dev = gp->dev; |
| 830 | skb_put(new_skb, (gp->rx_buf_sz + RX_OFFSET)); |
| 831 | rxd->buffer = cpu_to_le64(pci_map_page(gp->pdev, |
| 832 | virt_to_page(new_skb->data), |
| 833 | offset_in_page(new_skb->data), |
| 834 | RX_BUF_ALLOC_SIZE(gp), |
| 835 | PCI_DMA_FROMDEVICE)); |
| 836 | skb_reserve(new_skb, RX_OFFSET); |
| 837 | |
| 838 | /* Trim the original skb for the netif. */ |
| 839 | skb_trim(skb, len); |
| 840 | } else { |
| 841 | struct sk_buff *copy_skb = dev_alloc_skb(len + 2); |
| 842 | |
| 843 | if (copy_skb == NULL) { |
| 844 | drops++; |
| 845 | goto drop_it; |
| 846 | } |
| 847 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 848 | skb_reserve(copy_skb, 2); |
| 849 | skb_put(copy_skb, len); |
| 850 | pci_dma_sync_single_for_cpu(gp->pdev, dma_addr, len, PCI_DMA_FROMDEVICE); |
Arnaldo Carvalho de Melo | d626f62 | 2007-03-27 18:55:52 -0300 | [diff] [blame] | 851 | skb_copy_from_linear_data(skb, copy_skb->data, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 852 | pci_dma_sync_single_for_device(gp->pdev, dma_addr, len, PCI_DMA_FROMDEVICE); |
| 853 | |
| 854 | /* We'll reuse the original ring buffer. */ |
| 855 | skb = copy_skb; |
| 856 | } |
| 857 | |
Al Viro | 439104b | 2007-12-17 06:48:04 +0000 | [diff] [blame] | 858 | csum = (__force __sum16)htons((status & RXDCTRL_TCPCSUM) ^ 0xffff); |
| 859 | skb->csum = csum_unfold(csum); |
Patrick McHardy | 84fa793 | 2006-08-29 16:44:56 -0700 | [diff] [blame] | 860 | skb->ip_summed = CHECKSUM_COMPLETE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 861 | skb->protocol = eth_type_trans(skb, gp->dev); |
| 862 | |
| 863 | netif_receive_skb(skb); |
| 864 | |
| 865 | gp->net_stats.rx_packets++; |
| 866 | gp->net_stats.rx_bytes += len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 867 | |
| 868 | next: |
| 869 | entry = NEXT_RX(entry); |
| 870 | } |
| 871 | |
| 872 | gem_post_rxds(gp, entry); |
| 873 | |
| 874 | gp->rx_new = entry; |
| 875 | |
| 876 | if (drops) |
| 877 | printk(KERN_INFO "%s: Memory squeeze, deferring packet.\n", |
| 878 | gp->dev->name); |
| 879 | |
| 880 | return work_done; |
| 881 | } |
| 882 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 883 | static int gem_poll(struct napi_struct *napi, int budget) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 884 | { |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 885 | struct gem *gp = container_of(napi, struct gem, napi); |
| 886 | struct net_device *dev = gp->dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 887 | unsigned long flags; |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 888 | int work_done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 889 | |
| 890 | /* |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 891 | * NAPI locking nightmare: See comment at head of driver |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 892 | */ |
| 893 | spin_lock_irqsave(&gp->lock, flags); |
| 894 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 895 | work_done = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 896 | do { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 897 | /* Handle anomalies */ |
| 898 | if (gp->status & GREG_STAT_ABNORMAL) { |
| 899 | if (gem_abnormal_irq(dev, gp, gp->status)) |
| 900 | break; |
| 901 | } |
| 902 | |
| 903 | /* Run TX completion thread */ |
| 904 | spin_lock(&gp->tx_lock); |
| 905 | gem_tx(dev, gp, gp->status); |
| 906 | spin_unlock(&gp->tx_lock); |
| 907 | |
| 908 | spin_unlock_irqrestore(&gp->lock, flags); |
| 909 | |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 910 | /* Run RX thread. We don't use any locking here, |
| 911 | * code willing to do bad things - like cleaning the |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 912 | * rx ring - must call napi_disable(), which |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 913 | * schedule_timeout()'s if polling is already disabled. |
| 914 | */ |
David S. Miller | da990a2 | 2008-03-23 03:35:12 -0700 | [diff] [blame] | 915 | work_done += gem_rx(gp, budget - work_done); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 916 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 917 | if (work_done >= budget) |
| 918 | return work_done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 919 | |
| 920 | spin_lock_irqsave(&gp->lock, flags); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 921 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 922 | gp->status = readl(gp->regs + GREG_STAT); |
| 923 | } while (gp->status & GREG_STAT_NAPI); |
| 924 | |
Ben Hutchings | 288379f | 2009-01-19 16:43:59 -0800 | [diff] [blame] | 925 | __napi_complete(napi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 926 | gem_enable_ints(gp); |
| 927 | |
| 928 | spin_unlock_irqrestore(&gp->lock, flags); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 929 | |
| 930 | return work_done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 931 | } |
| 932 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 933 | static irqreturn_t gem_interrupt(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 934 | { |
| 935 | struct net_device *dev = dev_id; |
Wang Chen | 8f15ea4 | 2008-11-12 23:38:36 -0800 | [diff] [blame] | 936 | struct gem *gp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 937 | unsigned long flags; |
| 938 | |
| 939 | /* Swallow interrupts when shutting the chip down, though |
| 940 | * that shouldn't happen, we should have done free_irq() at |
| 941 | * this point... |
| 942 | */ |
| 943 | if (!gp->running) |
| 944 | return IRQ_HANDLED; |
| 945 | |
| 946 | spin_lock_irqsave(&gp->lock, flags); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 947 | |
Ben Hutchings | 288379f | 2009-01-19 16:43:59 -0800 | [diff] [blame] | 948 | if (napi_schedule_prep(&gp->napi)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 949 | u32 gem_status = readl(gp->regs + GREG_STAT); |
| 950 | |
| 951 | if (gem_status == 0) { |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 952 | napi_enable(&gp->napi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 953 | spin_unlock_irqrestore(&gp->lock, flags); |
| 954 | return IRQ_NONE; |
| 955 | } |
| 956 | gp->status = gem_status; |
| 957 | gem_disable_ints(gp); |
Ben Hutchings | 288379f | 2009-01-19 16:43:59 -0800 | [diff] [blame] | 958 | __napi_schedule(&gp->napi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 959 | } |
| 960 | |
| 961 | spin_unlock_irqrestore(&gp->lock, flags); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 962 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 963 | /* If polling was disabled at the time we received that |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 964 | * interrupt, we may return IRQ_HANDLED here while we |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 965 | * should return IRQ_NONE. No big deal... |
| 966 | */ |
| 967 | return IRQ_HANDLED; |
| 968 | } |
| 969 | |
| 970 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 971 | static void gem_poll_controller(struct net_device *dev) |
| 972 | { |
| 973 | /* gem_interrupt is safe to reentrance so no need |
| 974 | * to disable_irq here. |
| 975 | */ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 976 | gem_interrupt(dev->irq, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 977 | } |
| 978 | #endif |
| 979 | |
| 980 | static void gem_tx_timeout(struct net_device *dev) |
| 981 | { |
Wang Chen | 8f15ea4 | 2008-11-12 23:38:36 -0800 | [diff] [blame] | 982 | struct gem *gp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 983 | |
| 984 | printk(KERN_ERR "%s: transmit timed out, resetting\n", dev->name); |
| 985 | if (!gp->running) { |
| 986 | printk("%s: hrm.. hw not running !\n", dev->name); |
| 987 | return; |
| 988 | } |
| 989 | printk(KERN_ERR "%s: TX_STATE[%08x:%08x:%08x]\n", |
| 990 | dev->name, |
| 991 | readl(gp->regs + TXDMA_CFG), |
| 992 | readl(gp->regs + MAC_TXSTAT), |
| 993 | readl(gp->regs + MAC_TXCFG)); |
| 994 | printk(KERN_ERR "%s: RX_STATE[%08x:%08x:%08x]\n", |
| 995 | dev->name, |
| 996 | readl(gp->regs + RXDMA_CFG), |
| 997 | readl(gp->regs + MAC_RXSTAT), |
| 998 | readl(gp->regs + MAC_RXCFG)); |
| 999 | |
| 1000 | spin_lock_irq(&gp->lock); |
| 1001 | spin_lock(&gp->tx_lock); |
| 1002 | |
| 1003 | gp->reset_task_pending = 1; |
| 1004 | schedule_work(&gp->reset_task); |
| 1005 | |
| 1006 | spin_unlock(&gp->tx_lock); |
| 1007 | spin_unlock_irq(&gp->lock); |
| 1008 | } |
| 1009 | |
| 1010 | static __inline__ int gem_intme(int entry) |
| 1011 | { |
| 1012 | /* Algorithm: IRQ every 1/2 of descriptors. */ |
| 1013 | if (!(entry & ((TX_RING_SIZE>>1)-1))) |
| 1014 | return 1; |
| 1015 | |
| 1016 | return 0; |
| 1017 | } |
| 1018 | |
Stephen Hemminger | 61357325 | 2009-08-31 19:50:58 +0000 | [diff] [blame] | 1019 | static netdev_tx_t gem_start_xmit(struct sk_buff *skb, |
| 1020 | struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1021 | { |
Wang Chen | 8f15ea4 | 2008-11-12 23:38:36 -0800 | [diff] [blame] | 1022 | struct gem *gp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1023 | int entry; |
| 1024 | u64 ctrl; |
| 1025 | unsigned long flags; |
| 1026 | |
| 1027 | ctrl = 0; |
Patrick McHardy | 84fa793 | 2006-08-29 16:44:56 -0700 | [diff] [blame] | 1028 | if (skb->ip_summed == CHECKSUM_PARTIAL) { |
Arnaldo Carvalho de Melo | ea2ae17 | 2007-04-25 17:55:53 -0700 | [diff] [blame] | 1029 | const u64 csum_start_off = skb_transport_offset(skb); |
| 1030 | const u64 csum_stuff_off = csum_start_off + skb->csum_offset; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1031 | |
| 1032 | ctrl = (TXDCTRL_CENAB | |
| 1033 | (csum_start_off << 15) | |
| 1034 | (csum_stuff_off << 21)); |
| 1035 | } |
| 1036 | |
Jiri Slaby | b8883a6 | 2009-11-04 08:37:31 -0800 | [diff] [blame] | 1037 | if (!spin_trylock_irqsave(&gp->tx_lock, flags)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1038 | /* Tell upper layer to requeue */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1039 | return NETDEV_TX_LOCKED; |
| 1040 | } |
| 1041 | /* We raced with gem_do_stop() */ |
| 1042 | if (!gp->running) { |
| 1043 | spin_unlock_irqrestore(&gp->tx_lock, flags); |
| 1044 | return NETDEV_TX_BUSY; |
| 1045 | } |
| 1046 | |
| 1047 | /* This is a hard error, log it. */ |
| 1048 | if (TX_BUFFS_AVAIL(gp) <= (skb_shinfo(skb)->nr_frags + 1)) { |
| 1049 | netif_stop_queue(dev); |
| 1050 | spin_unlock_irqrestore(&gp->tx_lock, flags); |
| 1051 | printk(KERN_ERR PFX "%s: BUG! Tx Ring full when queue awake!\n", |
| 1052 | dev->name); |
| 1053 | return NETDEV_TX_BUSY; |
| 1054 | } |
| 1055 | |
| 1056 | entry = gp->tx_new; |
| 1057 | gp->tx_skbs[entry] = skb; |
| 1058 | |
| 1059 | if (skb_shinfo(skb)->nr_frags == 0) { |
| 1060 | struct gem_txd *txd = &gp->init_block->txd[entry]; |
| 1061 | dma_addr_t mapping; |
| 1062 | u32 len; |
| 1063 | |
| 1064 | len = skb->len; |
| 1065 | mapping = pci_map_page(gp->pdev, |
| 1066 | virt_to_page(skb->data), |
| 1067 | offset_in_page(skb->data), |
| 1068 | len, PCI_DMA_TODEVICE); |
| 1069 | ctrl |= TXDCTRL_SOF | TXDCTRL_EOF | len; |
| 1070 | if (gem_intme(entry)) |
| 1071 | ctrl |= TXDCTRL_INTME; |
| 1072 | txd->buffer = cpu_to_le64(mapping); |
| 1073 | wmb(); |
| 1074 | txd->control_word = cpu_to_le64(ctrl); |
| 1075 | entry = NEXT_TX(entry); |
| 1076 | } else { |
| 1077 | struct gem_txd *txd; |
| 1078 | u32 first_len; |
| 1079 | u64 intme; |
| 1080 | dma_addr_t first_mapping; |
| 1081 | int frag, first_entry = entry; |
| 1082 | |
| 1083 | intme = 0; |
| 1084 | if (gem_intme(entry)) |
| 1085 | intme |= TXDCTRL_INTME; |
| 1086 | |
| 1087 | /* We must give this initial chunk to the device last. |
| 1088 | * Otherwise we could race with the device. |
| 1089 | */ |
| 1090 | first_len = skb_headlen(skb); |
| 1091 | first_mapping = pci_map_page(gp->pdev, virt_to_page(skb->data), |
| 1092 | offset_in_page(skb->data), |
| 1093 | first_len, PCI_DMA_TODEVICE); |
| 1094 | entry = NEXT_TX(entry); |
| 1095 | |
| 1096 | for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) { |
| 1097 | skb_frag_t *this_frag = &skb_shinfo(skb)->frags[frag]; |
| 1098 | u32 len; |
| 1099 | dma_addr_t mapping; |
| 1100 | u64 this_ctrl; |
| 1101 | |
| 1102 | len = this_frag->size; |
| 1103 | mapping = pci_map_page(gp->pdev, |
| 1104 | this_frag->page, |
| 1105 | this_frag->page_offset, |
| 1106 | len, PCI_DMA_TODEVICE); |
| 1107 | this_ctrl = ctrl; |
| 1108 | if (frag == skb_shinfo(skb)->nr_frags - 1) |
| 1109 | this_ctrl |= TXDCTRL_EOF; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1110 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1111 | txd = &gp->init_block->txd[entry]; |
| 1112 | txd->buffer = cpu_to_le64(mapping); |
| 1113 | wmb(); |
| 1114 | txd->control_word = cpu_to_le64(this_ctrl | len); |
| 1115 | |
| 1116 | if (gem_intme(entry)) |
| 1117 | intme |= TXDCTRL_INTME; |
| 1118 | |
| 1119 | entry = NEXT_TX(entry); |
| 1120 | } |
| 1121 | txd = &gp->init_block->txd[first_entry]; |
| 1122 | txd->buffer = cpu_to_le64(first_mapping); |
| 1123 | wmb(); |
| 1124 | txd->control_word = |
| 1125 | cpu_to_le64(ctrl | TXDCTRL_SOF | intme | first_len); |
| 1126 | } |
| 1127 | |
| 1128 | gp->tx_new = entry; |
| 1129 | if (TX_BUFFS_AVAIL(gp) <= (MAX_SKB_FRAGS + 1)) |
| 1130 | netif_stop_queue(dev); |
| 1131 | |
| 1132 | if (netif_msg_tx_queued(gp)) |
| 1133 | printk(KERN_DEBUG "%s: tx queued, slot %d, skblen %d\n", |
| 1134 | dev->name, entry, skb->len); |
| 1135 | mb(); |
| 1136 | writel(gp->tx_new, gp->regs + TXDMA_KICK); |
| 1137 | spin_unlock_irqrestore(&gp->tx_lock, flags); |
| 1138 | |
| 1139 | dev->trans_start = jiffies; |
| 1140 | |
| 1141 | return NETDEV_TX_OK; |
| 1142 | } |
| 1143 | |
David S. Miller | 8c83f80 | 2008-12-09 00:10:11 -0800 | [diff] [blame] | 1144 | static void gem_pcs_reset(struct gem *gp) |
| 1145 | { |
| 1146 | int limit; |
| 1147 | u32 val; |
| 1148 | |
| 1149 | /* Reset PCS unit. */ |
| 1150 | val = readl(gp->regs + PCS_MIICTRL); |
| 1151 | val |= PCS_MIICTRL_RST; |
| 1152 | writel(val, gp->regs + PCS_MIICTRL); |
| 1153 | |
| 1154 | limit = 32; |
| 1155 | while (readl(gp->regs + PCS_MIICTRL) & PCS_MIICTRL_RST) { |
| 1156 | udelay(100); |
| 1157 | if (limit-- <= 0) |
| 1158 | break; |
| 1159 | } |
roel kluin | d13c11f | 2009-02-16 04:02:04 +0000 | [diff] [blame] | 1160 | if (limit < 0) |
David S. Miller | 8c83f80 | 2008-12-09 00:10:11 -0800 | [diff] [blame] | 1161 | printk(KERN_WARNING "%s: PCS reset bit would not clear.\n", |
| 1162 | gp->dev->name); |
| 1163 | } |
| 1164 | |
| 1165 | static void gem_pcs_reinit_adv(struct gem *gp) |
| 1166 | { |
| 1167 | u32 val; |
| 1168 | |
| 1169 | /* Make sure PCS is disabled while changing advertisement |
| 1170 | * configuration. |
| 1171 | */ |
| 1172 | val = readl(gp->regs + PCS_CFG); |
| 1173 | val &= ~(PCS_CFG_ENABLE | PCS_CFG_TO); |
| 1174 | writel(val, gp->regs + PCS_CFG); |
| 1175 | |
| 1176 | /* Advertise all capabilities except assymetric |
| 1177 | * pause. |
| 1178 | */ |
| 1179 | val = readl(gp->regs + PCS_MIIADV); |
| 1180 | val |= (PCS_MIIADV_FD | PCS_MIIADV_HD | |
| 1181 | PCS_MIIADV_SP | PCS_MIIADV_AP); |
| 1182 | writel(val, gp->regs + PCS_MIIADV); |
| 1183 | |
| 1184 | /* Enable and restart auto-negotiation, disable wrapback/loopback, |
| 1185 | * and re-enable PCS. |
| 1186 | */ |
| 1187 | val = readl(gp->regs + PCS_MIICTRL); |
| 1188 | val |= (PCS_MIICTRL_RAN | PCS_MIICTRL_ANE); |
| 1189 | val &= ~PCS_MIICTRL_WB; |
| 1190 | writel(val, gp->regs + PCS_MIICTRL); |
| 1191 | |
| 1192 | val = readl(gp->regs + PCS_CFG); |
| 1193 | val |= PCS_CFG_ENABLE; |
| 1194 | writel(val, gp->regs + PCS_CFG); |
| 1195 | |
| 1196 | /* Make sure serialink loopback is off. The meaning |
| 1197 | * of this bit is logically inverted based upon whether |
| 1198 | * you are in Serialink or SERDES mode. |
| 1199 | */ |
| 1200 | val = readl(gp->regs + PCS_SCTRL); |
| 1201 | if (gp->phy_type == phy_serialink) |
| 1202 | val &= ~PCS_SCTRL_LOOP; |
| 1203 | else |
| 1204 | val |= PCS_SCTRL_LOOP; |
| 1205 | writel(val, gp->regs + PCS_SCTRL); |
| 1206 | } |
| 1207 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1208 | #define STOP_TRIES 32 |
| 1209 | |
| 1210 | /* Must be invoked under gp->lock and gp->tx_lock. */ |
| 1211 | static void gem_reset(struct gem *gp) |
| 1212 | { |
| 1213 | int limit; |
| 1214 | u32 val; |
| 1215 | |
| 1216 | /* Make sure we won't get any more interrupts */ |
| 1217 | writel(0xffffffff, gp->regs + GREG_IMASK); |
| 1218 | |
| 1219 | /* Reset the chip */ |
| 1220 | writel(gp->swrst_base | GREG_SWRST_TXRST | GREG_SWRST_RXRST, |
| 1221 | gp->regs + GREG_SWRST); |
| 1222 | |
| 1223 | limit = STOP_TRIES; |
| 1224 | |
| 1225 | do { |
| 1226 | udelay(20); |
| 1227 | val = readl(gp->regs + GREG_SWRST); |
| 1228 | if (limit-- <= 0) |
| 1229 | break; |
| 1230 | } while (val & (GREG_SWRST_TXRST | GREG_SWRST_RXRST)); |
| 1231 | |
Roel Kluin | 4a8fd2c | 2009-03-04 00:08:39 -0800 | [diff] [blame] | 1232 | if (limit < 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1233 | printk(KERN_ERR "%s: SW reset is ghetto.\n", gp->dev->name); |
David S. Miller | 8c83f80 | 2008-12-09 00:10:11 -0800 | [diff] [blame] | 1234 | |
| 1235 | if (gp->phy_type == phy_serialink || gp->phy_type == phy_serdes) |
| 1236 | gem_pcs_reinit_adv(gp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1237 | } |
| 1238 | |
| 1239 | /* Must be invoked under gp->lock and gp->tx_lock. */ |
| 1240 | static void gem_start_dma(struct gem *gp) |
| 1241 | { |
| 1242 | u32 val; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1243 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1244 | /* We are ready to rock, turn everything on. */ |
| 1245 | val = readl(gp->regs + TXDMA_CFG); |
| 1246 | writel(val | TXDMA_CFG_ENABLE, gp->regs + TXDMA_CFG); |
| 1247 | val = readl(gp->regs + RXDMA_CFG); |
| 1248 | writel(val | RXDMA_CFG_ENABLE, gp->regs + RXDMA_CFG); |
| 1249 | val = readl(gp->regs + MAC_TXCFG); |
| 1250 | writel(val | MAC_TXCFG_ENAB, gp->regs + MAC_TXCFG); |
| 1251 | val = readl(gp->regs + MAC_RXCFG); |
| 1252 | writel(val | MAC_RXCFG_ENAB, gp->regs + MAC_RXCFG); |
| 1253 | |
| 1254 | (void) readl(gp->regs + MAC_RXCFG); |
| 1255 | udelay(100); |
| 1256 | |
| 1257 | gem_enable_ints(gp); |
| 1258 | |
| 1259 | writel(RX_RING_SIZE - 4, gp->regs + RXDMA_KICK); |
| 1260 | } |
| 1261 | |
| 1262 | /* Must be invoked under gp->lock and gp->tx_lock. DMA won't be |
| 1263 | * actually stopped before about 4ms tho ... |
| 1264 | */ |
| 1265 | static void gem_stop_dma(struct gem *gp) |
| 1266 | { |
| 1267 | u32 val; |
| 1268 | |
| 1269 | /* We are done rocking, turn everything off. */ |
| 1270 | val = readl(gp->regs + TXDMA_CFG); |
| 1271 | writel(val & ~TXDMA_CFG_ENABLE, gp->regs + TXDMA_CFG); |
| 1272 | val = readl(gp->regs + RXDMA_CFG); |
| 1273 | writel(val & ~RXDMA_CFG_ENABLE, gp->regs + RXDMA_CFG); |
| 1274 | val = readl(gp->regs + MAC_TXCFG); |
| 1275 | writel(val & ~MAC_TXCFG_ENAB, gp->regs + MAC_TXCFG); |
| 1276 | val = readl(gp->regs + MAC_RXCFG); |
| 1277 | writel(val & ~MAC_RXCFG_ENAB, gp->regs + MAC_RXCFG); |
| 1278 | |
| 1279 | (void) readl(gp->regs + MAC_RXCFG); |
| 1280 | |
| 1281 | /* Need to wait a bit ... done by the caller */ |
| 1282 | } |
| 1283 | |
| 1284 | |
| 1285 | /* Must be invoked under gp->lock and gp->tx_lock. */ |
| 1286 | // XXX dbl check what that function should do when called on PCS PHY |
| 1287 | static void gem_begin_auto_negotiation(struct gem *gp, struct ethtool_cmd *ep) |
| 1288 | { |
| 1289 | u32 advertise, features; |
| 1290 | int autoneg; |
| 1291 | int speed; |
| 1292 | int duplex; |
| 1293 | |
| 1294 | if (gp->phy_type != phy_mii_mdio0 && |
| 1295 | gp->phy_type != phy_mii_mdio1) |
| 1296 | goto non_mii; |
| 1297 | |
| 1298 | /* Setup advertise */ |
| 1299 | if (found_mii_phy(gp)) |
| 1300 | features = gp->phy_mii.def->features; |
| 1301 | else |
| 1302 | features = 0; |
| 1303 | |
| 1304 | advertise = features & ADVERTISE_MASK; |
| 1305 | if (gp->phy_mii.advertising != 0) |
| 1306 | advertise &= gp->phy_mii.advertising; |
| 1307 | |
| 1308 | autoneg = gp->want_autoneg; |
| 1309 | speed = gp->phy_mii.speed; |
| 1310 | duplex = gp->phy_mii.duplex; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1311 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1312 | /* Setup link parameters */ |
| 1313 | if (!ep) |
| 1314 | goto start_aneg; |
| 1315 | if (ep->autoneg == AUTONEG_ENABLE) { |
| 1316 | advertise = ep->advertising; |
| 1317 | autoneg = 1; |
| 1318 | } else { |
| 1319 | autoneg = 0; |
| 1320 | speed = ep->speed; |
| 1321 | duplex = ep->duplex; |
| 1322 | } |
| 1323 | |
| 1324 | start_aneg: |
| 1325 | /* Sanitize settings based on PHY capabilities */ |
| 1326 | if ((features & SUPPORTED_Autoneg) == 0) |
| 1327 | autoneg = 0; |
| 1328 | if (speed == SPEED_1000 && |
| 1329 | !(features & (SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full))) |
| 1330 | speed = SPEED_100; |
| 1331 | if (speed == SPEED_100 && |
| 1332 | !(features & (SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full))) |
| 1333 | speed = SPEED_10; |
| 1334 | if (duplex == DUPLEX_FULL && |
| 1335 | !(features & (SUPPORTED_1000baseT_Full | |
| 1336 | SUPPORTED_100baseT_Full | |
| 1337 | SUPPORTED_10baseT_Full))) |
| 1338 | duplex = DUPLEX_HALF; |
| 1339 | if (speed == 0) |
| 1340 | speed = SPEED_10; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1341 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1342 | /* If we are asleep, we don't try to actually setup the PHY, we |
| 1343 | * just store the settings |
| 1344 | */ |
| 1345 | if (gp->asleep) { |
| 1346 | gp->phy_mii.autoneg = gp->want_autoneg = autoneg; |
| 1347 | gp->phy_mii.speed = speed; |
| 1348 | gp->phy_mii.duplex = duplex; |
| 1349 | return; |
| 1350 | } |
| 1351 | |
| 1352 | /* Configure PHY & start aneg */ |
| 1353 | gp->want_autoneg = autoneg; |
| 1354 | if (autoneg) { |
| 1355 | if (found_mii_phy(gp)) |
| 1356 | gp->phy_mii.def->ops->setup_aneg(&gp->phy_mii, advertise); |
| 1357 | gp->lstate = link_aneg; |
| 1358 | } else { |
| 1359 | if (found_mii_phy(gp)) |
| 1360 | gp->phy_mii.def->ops->setup_forced(&gp->phy_mii, speed, duplex); |
| 1361 | gp->lstate = link_force_ok; |
| 1362 | } |
| 1363 | |
| 1364 | non_mii: |
| 1365 | gp->timer_ticks = 0; |
| 1366 | mod_timer(&gp->link_timer, jiffies + ((12 * HZ) / 10)); |
| 1367 | } |
| 1368 | |
| 1369 | /* A link-up condition has occurred, initialize and enable the |
| 1370 | * rest of the chip. |
| 1371 | * |
| 1372 | * Must be invoked under gp->lock and gp->tx_lock. |
| 1373 | */ |
| 1374 | static int gem_set_link_modes(struct gem *gp) |
| 1375 | { |
| 1376 | u32 val; |
| 1377 | int full_duplex, speed, pause; |
| 1378 | |
| 1379 | full_duplex = 0; |
| 1380 | speed = SPEED_10; |
| 1381 | pause = 0; |
| 1382 | |
| 1383 | if (found_mii_phy(gp)) { |
| 1384 | if (gp->phy_mii.def->ops->read_link(&gp->phy_mii)) |
| 1385 | return 1; |
| 1386 | full_duplex = (gp->phy_mii.duplex == DUPLEX_FULL); |
| 1387 | speed = gp->phy_mii.speed; |
| 1388 | pause = gp->phy_mii.pause; |
| 1389 | } else if (gp->phy_type == phy_serialink || |
| 1390 | gp->phy_type == phy_serdes) { |
| 1391 | u32 pcs_lpa = readl(gp->regs + PCS_MIILP); |
| 1392 | |
David S. Miller | 8c83f80 | 2008-12-09 00:10:11 -0800 | [diff] [blame] | 1393 | if ((pcs_lpa & PCS_MIIADV_FD) || gp->phy_type == phy_serdes) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1394 | full_duplex = 1; |
| 1395 | speed = SPEED_1000; |
| 1396 | } |
| 1397 | |
| 1398 | if (netif_msg_link(gp)) |
| 1399 | printk(KERN_INFO "%s: Link is up at %d Mbps, %s-duplex.\n", |
| 1400 | gp->dev->name, speed, (full_duplex ? "full" : "half")); |
| 1401 | |
| 1402 | if (!gp->running) |
| 1403 | return 0; |
| 1404 | |
| 1405 | val = (MAC_TXCFG_EIPG0 | MAC_TXCFG_NGU); |
| 1406 | if (full_duplex) { |
| 1407 | val |= (MAC_TXCFG_ICS | MAC_TXCFG_ICOLL); |
| 1408 | } else { |
| 1409 | /* MAC_TXCFG_NBO must be zero. */ |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1410 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1411 | writel(val, gp->regs + MAC_TXCFG); |
| 1412 | |
| 1413 | val = (MAC_XIFCFG_OE | MAC_XIFCFG_LLED); |
| 1414 | if (!full_duplex && |
| 1415 | (gp->phy_type == phy_mii_mdio0 || |
| 1416 | gp->phy_type == phy_mii_mdio1)) { |
| 1417 | val |= MAC_XIFCFG_DISE; |
| 1418 | } else if (full_duplex) { |
| 1419 | val |= MAC_XIFCFG_FLED; |
| 1420 | } |
| 1421 | |
| 1422 | if (speed == SPEED_1000) |
| 1423 | val |= (MAC_XIFCFG_GMII); |
| 1424 | |
| 1425 | writel(val, gp->regs + MAC_XIFCFG); |
| 1426 | |
| 1427 | /* If gigabit and half-duplex, enable carrier extension |
| 1428 | * mode. Else, disable it. |
| 1429 | */ |
| 1430 | if (speed == SPEED_1000 && !full_duplex) { |
| 1431 | val = readl(gp->regs + MAC_TXCFG); |
| 1432 | writel(val | MAC_TXCFG_TCE, gp->regs + MAC_TXCFG); |
| 1433 | |
| 1434 | val = readl(gp->regs + MAC_RXCFG); |
| 1435 | writel(val | MAC_RXCFG_RCE, gp->regs + MAC_RXCFG); |
| 1436 | } else { |
| 1437 | val = readl(gp->regs + MAC_TXCFG); |
| 1438 | writel(val & ~MAC_TXCFG_TCE, gp->regs + MAC_TXCFG); |
| 1439 | |
| 1440 | val = readl(gp->regs + MAC_RXCFG); |
| 1441 | writel(val & ~MAC_RXCFG_RCE, gp->regs + MAC_RXCFG); |
| 1442 | } |
| 1443 | |
| 1444 | if (gp->phy_type == phy_serialink || |
| 1445 | gp->phy_type == phy_serdes) { |
| 1446 | u32 pcs_lpa = readl(gp->regs + PCS_MIILP); |
| 1447 | |
| 1448 | if (pcs_lpa & (PCS_MIIADV_SP | PCS_MIIADV_AP)) |
| 1449 | pause = 1; |
| 1450 | } |
| 1451 | |
| 1452 | if (netif_msg_link(gp)) { |
| 1453 | if (pause) { |
| 1454 | printk(KERN_INFO "%s: Pause is enabled " |
| 1455 | "(rxfifo: %d off: %d on: %d)\n", |
| 1456 | gp->dev->name, |
| 1457 | gp->rx_fifo_sz, |
| 1458 | gp->rx_pause_off, |
| 1459 | gp->rx_pause_on); |
| 1460 | } else { |
| 1461 | printk(KERN_INFO "%s: Pause is disabled\n", |
| 1462 | gp->dev->name); |
| 1463 | } |
| 1464 | } |
| 1465 | |
| 1466 | if (!full_duplex) |
| 1467 | writel(512, gp->regs + MAC_STIME); |
| 1468 | else |
| 1469 | writel(64, gp->regs + MAC_STIME); |
| 1470 | val = readl(gp->regs + MAC_MCCFG); |
| 1471 | if (pause) |
| 1472 | val |= (MAC_MCCFG_SPE | MAC_MCCFG_RPE); |
| 1473 | else |
| 1474 | val &= ~(MAC_MCCFG_SPE | MAC_MCCFG_RPE); |
| 1475 | writel(val, gp->regs + MAC_MCCFG); |
| 1476 | |
| 1477 | gem_start_dma(gp); |
| 1478 | |
| 1479 | return 0; |
| 1480 | } |
| 1481 | |
| 1482 | /* Must be invoked under gp->lock and gp->tx_lock. */ |
| 1483 | static int gem_mdio_link_not_up(struct gem *gp) |
| 1484 | { |
| 1485 | switch (gp->lstate) { |
| 1486 | case link_force_ret: |
| 1487 | if (netif_msg_link(gp)) |
| 1488 | printk(KERN_INFO "%s: Autoneg failed again, keeping" |
| 1489 | " forced mode\n", gp->dev->name); |
| 1490 | gp->phy_mii.def->ops->setup_forced(&gp->phy_mii, |
| 1491 | gp->last_forced_speed, DUPLEX_HALF); |
| 1492 | gp->timer_ticks = 5; |
| 1493 | gp->lstate = link_force_ok; |
| 1494 | return 0; |
| 1495 | case link_aneg: |
| 1496 | /* We try forced modes after a failed aneg only on PHYs that don't |
| 1497 | * have "magic_aneg" bit set, which means they internally do the |
| 1498 | * while forced-mode thingy. On these, we just restart aneg |
| 1499 | */ |
| 1500 | if (gp->phy_mii.def->magic_aneg) |
| 1501 | return 1; |
| 1502 | if (netif_msg_link(gp)) |
| 1503 | printk(KERN_INFO "%s: switching to forced 100bt\n", |
| 1504 | gp->dev->name); |
| 1505 | /* Try forced modes. */ |
| 1506 | gp->phy_mii.def->ops->setup_forced(&gp->phy_mii, SPEED_100, |
| 1507 | DUPLEX_HALF); |
| 1508 | gp->timer_ticks = 5; |
| 1509 | gp->lstate = link_force_try; |
| 1510 | return 0; |
| 1511 | case link_force_try: |
| 1512 | /* Downgrade from 100 to 10 Mbps if necessary. |
| 1513 | * If already at 10Mbps, warn user about the |
| 1514 | * situation every 10 ticks. |
| 1515 | */ |
| 1516 | if (gp->phy_mii.speed == SPEED_100) { |
| 1517 | gp->phy_mii.def->ops->setup_forced(&gp->phy_mii, SPEED_10, |
| 1518 | DUPLEX_HALF); |
| 1519 | gp->timer_ticks = 5; |
| 1520 | if (netif_msg_link(gp)) |
| 1521 | printk(KERN_INFO "%s: switching to forced 10bt\n", |
| 1522 | gp->dev->name); |
| 1523 | return 0; |
| 1524 | } else |
| 1525 | return 1; |
| 1526 | default: |
| 1527 | return 0; |
| 1528 | } |
| 1529 | } |
| 1530 | |
| 1531 | static void gem_link_timer(unsigned long data) |
| 1532 | { |
| 1533 | struct gem *gp = (struct gem *) data; |
| 1534 | int restart_aneg = 0; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1535 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1536 | if (gp->asleep) |
| 1537 | return; |
| 1538 | |
| 1539 | spin_lock_irq(&gp->lock); |
| 1540 | spin_lock(&gp->tx_lock); |
| 1541 | gem_get_cell(gp); |
| 1542 | |
| 1543 | /* If the reset task is still pending, we just |
| 1544 | * reschedule the link timer |
| 1545 | */ |
| 1546 | if (gp->reset_task_pending) |
| 1547 | goto restart; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1548 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1549 | if (gp->phy_type == phy_serialink || |
| 1550 | gp->phy_type == phy_serdes) { |
| 1551 | u32 val = readl(gp->regs + PCS_MIISTAT); |
| 1552 | |
| 1553 | if (!(val & PCS_MIISTAT_LS)) |
| 1554 | val = readl(gp->regs + PCS_MIISTAT); |
| 1555 | |
| 1556 | if ((val & PCS_MIISTAT_LS) != 0) { |
David S. Miller | 8c83f80 | 2008-12-09 00:10:11 -0800 | [diff] [blame] | 1557 | if (gp->lstate == link_up) |
| 1558 | goto restart; |
| 1559 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1560 | gp->lstate = link_up; |
| 1561 | netif_carrier_on(gp->dev); |
| 1562 | (void)gem_set_link_modes(gp); |
| 1563 | } |
| 1564 | goto restart; |
| 1565 | } |
| 1566 | if (found_mii_phy(gp) && gp->phy_mii.def->ops->poll_link(&gp->phy_mii)) { |
| 1567 | /* Ok, here we got a link. If we had it due to a forced |
| 1568 | * fallback, and we were configured for autoneg, we do |
| 1569 | * retry a short autoneg pass. If you know your hub is |
| 1570 | * broken, use ethtool ;) |
| 1571 | */ |
| 1572 | if (gp->lstate == link_force_try && gp->want_autoneg) { |
| 1573 | gp->lstate = link_force_ret; |
| 1574 | gp->last_forced_speed = gp->phy_mii.speed; |
| 1575 | gp->timer_ticks = 5; |
| 1576 | if (netif_msg_link(gp)) |
| 1577 | printk(KERN_INFO "%s: Got link after fallback, retrying" |
| 1578 | " autoneg once...\n", gp->dev->name); |
| 1579 | gp->phy_mii.def->ops->setup_aneg(&gp->phy_mii, gp->phy_mii.advertising); |
| 1580 | } else if (gp->lstate != link_up) { |
| 1581 | gp->lstate = link_up; |
| 1582 | netif_carrier_on(gp->dev); |
| 1583 | if (gem_set_link_modes(gp)) |
| 1584 | restart_aneg = 1; |
| 1585 | } |
| 1586 | } else { |
| 1587 | /* If the link was previously up, we restart the |
| 1588 | * whole process |
| 1589 | */ |
| 1590 | if (gp->lstate == link_up) { |
| 1591 | gp->lstate = link_down; |
| 1592 | if (netif_msg_link(gp)) |
| 1593 | printk(KERN_INFO "%s: Link down\n", |
| 1594 | gp->dev->name); |
| 1595 | netif_carrier_off(gp->dev); |
| 1596 | gp->reset_task_pending = 1; |
| 1597 | schedule_work(&gp->reset_task); |
| 1598 | restart_aneg = 1; |
| 1599 | } else if (++gp->timer_ticks > 10) { |
| 1600 | if (found_mii_phy(gp)) |
| 1601 | restart_aneg = gem_mdio_link_not_up(gp); |
| 1602 | else |
| 1603 | restart_aneg = 1; |
| 1604 | } |
| 1605 | } |
| 1606 | if (restart_aneg) { |
| 1607 | gem_begin_auto_negotiation(gp, NULL); |
| 1608 | goto out_unlock; |
| 1609 | } |
| 1610 | restart: |
| 1611 | mod_timer(&gp->link_timer, jiffies + ((12 * HZ) / 10)); |
| 1612 | out_unlock: |
| 1613 | gem_put_cell(gp); |
| 1614 | spin_unlock(&gp->tx_lock); |
| 1615 | spin_unlock_irq(&gp->lock); |
| 1616 | } |
| 1617 | |
| 1618 | /* Must be invoked under gp->lock and gp->tx_lock. */ |
| 1619 | static void gem_clean_rings(struct gem *gp) |
| 1620 | { |
| 1621 | struct gem_init_block *gb = gp->init_block; |
| 1622 | struct sk_buff *skb; |
| 1623 | int i; |
| 1624 | dma_addr_t dma_addr; |
| 1625 | |
| 1626 | for (i = 0; i < RX_RING_SIZE; i++) { |
| 1627 | struct gem_rxd *rxd; |
| 1628 | |
| 1629 | rxd = &gb->rxd[i]; |
| 1630 | if (gp->rx_skbs[i] != NULL) { |
| 1631 | skb = gp->rx_skbs[i]; |
| 1632 | dma_addr = le64_to_cpu(rxd->buffer); |
| 1633 | pci_unmap_page(gp->pdev, dma_addr, |
| 1634 | RX_BUF_ALLOC_SIZE(gp), |
| 1635 | PCI_DMA_FROMDEVICE); |
| 1636 | dev_kfree_skb_any(skb); |
| 1637 | gp->rx_skbs[i] = NULL; |
| 1638 | } |
| 1639 | rxd->status_word = 0; |
| 1640 | wmb(); |
| 1641 | rxd->buffer = 0; |
| 1642 | } |
| 1643 | |
| 1644 | for (i = 0; i < TX_RING_SIZE; i++) { |
| 1645 | if (gp->tx_skbs[i] != NULL) { |
| 1646 | struct gem_txd *txd; |
| 1647 | int frag; |
| 1648 | |
| 1649 | skb = gp->tx_skbs[i]; |
| 1650 | gp->tx_skbs[i] = NULL; |
| 1651 | |
| 1652 | for (frag = 0; frag <= skb_shinfo(skb)->nr_frags; frag++) { |
| 1653 | int ent = i & (TX_RING_SIZE - 1); |
| 1654 | |
| 1655 | txd = &gb->txd[ent]; |
| 1656 | dma_addr = le64_to_cpu(txd->buffer); |
| 1657 | pci_unmap_page(gp->pdev, dma_addr, |
| 1658 | le64_to_cpu(txd->control_word) & |
| 1659 | TXDCTRL_BUFSZ, PCI_DMA_TODEVICE); |
| 1660 | |
| 1661 | if (frag != skb_shinfo(skb)->nr_frags) |
| 1662 | i++; |
| 1663 | } |
| 1664 | dev_kfree_skb_any(skb); |
| 1665 | } |
| 1666 | } |
| 1667 | } |
| 1668 | |
| 1669 | /* Must be invoked under gp->lock and gp->tx_lock. */ |
| 1670 | static void gem_init_rings(struct gem *gp) |
| 1671 | { |
| 1672 | struct gem_init_block *gb = gp->init_block; |
| 1673 | struct net_device *dev = gp->dev; |
| 1674 | int i; |
| 1675 | dma_addr_t dma_addr; |
| 1676 | |
| 1677 | gp->rx_new = gp->rx_old = gp->tx_new = gp->tx_old = 0; |
| 1678 | |
| 1679 | gem_clean_rings(gp); |
| 1680 | |
| 1681 | gp->rx_buf_sz = max(dev->mtu + ETH_HLEN + VLAN_HLEN, |
| 1682 | (unsigned)VLAN_ETH_FRAME_LEN); |
| 1683 | |
| 1684 | for (i = 0; i < RX_RING_SIZE; i++) { |
| 1685 | struct sk_buff *skb; |
| 1686 | struct gem_rxd *rxd = &gb->rxd[i]; |
| 1687 | |
| 1688 | skb = gem_alloc_skb(RX_BUF_ALLOC_SIZE(gp), GFP_ATOMIC); |
| 1689 | if (!skb) { |
| 1690 | rxd->buffer = 0; |
| 1691 | rxd->status_word = 0; |
| 1692 | continue; |
| 1693 | } |
| 1694 | |
| 1695 | gp->rx_skbs[i] = skb; |
| 1696 | skb->dev = dev; |
| 1697 | skb_put(skb, (gp->rx_buf_sz + RX_OFFSET)); |
| 1698 | dma_addr = pci_map_page(gp->pdev, |
| 1699 | virt_to_page(skb->data), |
| 1700 | offset_in_page(skb->data), |
| 1701 | RX_BUF_ALLOC_SIZE(gp), |
| 1702 | PCI_DMA_FROMDEVICE); |
| 1703 | rxd->buffer = cpu_to_le64(dma_addr); |
| 1704 | wmb(); |
| 1705 | rxd->status_word = cpu_to_le64(RXDCTRL_FRESH(gp)); |
| 1706 | skb_reserve(skb, RX_OFFSET); |
| 1707 | } |
| 1708 | |
| 1709 | for (i = 0; i < TX_RING_SIZE; i++) { |
| 1710 | struct gem_txd *txd = &gb->txd[i]; |
| 1711 | |
| 1712 | txd->control_word = 0; |
| 1713 | wmb(); |
| 1714 | txd->buffer = 0; |
| 1715 | } |
| 1716 | wmb(); |
| 1717 | } |
| 1718 | |
| 1719 | /* Init PHY interface and start link poll state machine */ |
| 1720 | static void gem_init_phy(struct gem *gp) |
| 1721 | { |
David S. Miller | 7fb76aa | 2006-01-31 17:09:20 -0800 | [diff] [blame] | 1722 | u32 mifcfg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1723 | |
| 1724 | /* Revert MIF CFG setting done on stop_phy */ |
David S. Miller | 7fb76aa | 2006-01-31 17:09:20 -0800 | [diff] [blame] | 1725 | mifcfg = readl(gp->regs + MIF_CFG); |
| 1726 | mifcfg &= ~MIF_CFG_BBMODE; |
| 1727 | writel(mifcfg, gp->regs + MIF_CFG); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1728 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1729 | if (gp->pdev->vendor == PCI_VENDOR_ID_APPLE) { |
| 1730 | int i; |
| 1731 | |
David S. Miller | 7fb76aa | 2006-01-31 17:09:20 -0800 | [diff] [blame] | 1732 | /* Those delay sucks, the HW seem to love them though, I'll |
| 1733 | * serisouly consider breaking some locks here to be able |
| 1734 | * to schedule instead |
Benjamin Herrenschmidt | 4072719 | 2006-01-23 16:30:04 -0800 | [diff] [blame] | 1735 | */ |
David S. Miller | 7fb76aa | 2006-01-31 17:09:20 -0800 | [diff] [blame] | 1736 | for (i = 0; i < 3; i++) { |
| 1737 | #ifdef CONFIG_PPC_PMAC |
| 1738 | pmac_call_feature(PMAC_FTR_GMAC_PHY_RESET, gp->of_node, 0, 0); |
| 1739 | msleep(20); |
| 1740 | #endif |
| 1741 | /* Some PHYs used by apple have problem getting back to us, |
| 1742 | * we do an additional reset here |
| 1743 | */ |
| 1744 | phy_write(gp, MII_BMCR, BMCR_RESET); |
| 1745 | msleep(20); |
| 1746 | if (phy_read(gp, MII_BMCR) != 0xffff) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1747 | break; |
David S. Miller | 7fb76aa | 2006-01-31 17:09:20 -0800 | [diff] [blame] | 1748 | if (i == 2) |
| 1749 | printk(KERN_WARNING "%s: GMAC PHY not responding !\n", |
| 1750 | gp->dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1751 | } |
| 1752 | } |
| 1753 | |
| 1754 | if (gp->pdev->vendor == PCI_VENDOR_ID_SUN && |
| 1755 | gp->pdev->device == PCI_DEVICE_ID_SUN_GEM) { |
| 1756 | u32 val; |
| 1757 | |
| 1758 | /* Init datapath mode register. */ |
| 1759 | if (gp->phy_type == phy_mii_mdio0 || |
| 1760 | gp->phy_type == phy_mii_mdio1) { |
| 1761 | val = PCS_DMODE_MGM; |
| 1762 | } else if (gp->phy_type == phy_serialink) { |
| 1763 | val = PCS_DMODE_SM | PCS_DMODE_GMOE; |
| 1764 | } else { |
| 1765 | val = PCS_DMODE_ESM; |
| 1766 | } |
| 1767 | |
| 1768 | writel(val, gp->regs + PCS_DMODE); |
| 1769 | } |
| 1770 | |
| 1771 | if (gp->phy_type == phy_mii_mdio0 || |
| 1772 | gp->phy_type == phy_mii_mdio1) { |
| 1773 | // XXX check for errors |
| 1774 | mii_phy_probe(&gp->phy_mii, gp->mii_phy_addr); |
| 1775 | |
| 1776 | /* Init PHY */ |
| 1777 | if (gp->phy_mii.def && gp->phy_mii.def->ops->init) |
| 1778 | gp->phy_mii.def->ops->init(&gp->phy_mii); |
| 1779 | } else { |
David S. Miller | 8c83f80 | 2008-12-09 00:10:11 -0800 | [diff] [blame] | 1780 | gem_pcs_reset(gp); |
| 1781 | gem_pcs_reinit_adv(gp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1782 | } |
| 1783 | |
| 1784 | /* Default aneg parameters */ |
| 1785 | gp->timer_ticks = 0; |
| 1786 | gp->lstate = link_down; |
| 1787 | netif_carrier_off(gp->dev); |
| 1788 | |
| 1789 | /* Can I advertise gigabit here ? I'd need BCM PHY docs... */ |
| 1790 | spin_lock_irq(&gp->lock); |
| 1791 | gem_begin_auto_negotiation(gp, NULL); |
| 1792 | spin_unlock_irq(&gp->lock); |
| 1793 | } |
| 1794 | |
| 1795 | /* Must be invoked under gp->lock and gp->tx_lock. */ |
| 1796 | static void gem_init_dma(struct gem *gp) |
| 1797 | { |
| 1798 | u64 desc_dma = (u64) gp->gblock_dvma; |
| 1799 | u32 val; |
| 1800 | |
| 1801 | val = (TXDMA_CFG_BASE | (0x7ff << 10) | TXDMA_CFG_PMODE); |
| 1802 | writel(val, gp->regs + TXDMA_CFG); |
| 1803 | |
| 1804 | writel(desc_dma >> 32, gp->regs + TXDMA_DBHI); |
| 1805 | writel(desc_dma & 0xffffffff, gp->regs + TXDMA_DBLOW); |
| 1806 | desc_dma += (INIT_BLOCK_TX_RING_SIZE * sizeof(struct gem_txd)); |
| 1807 | |
| 1808 | writel(0, gp->regs + TXDMA_KICK); |
| 1809 | |
| 1810 | val = (RXDMA_CFG_BASE | (RX_OFFSET << 10) | |
| 1811 | ((14 / 2) << 13) | RXDMA_CFG_FTHRESH_128); |
| 1812 | writel(val, gp->regs + RXDMA_CFG); |
| 1813 | |
| 1814 | writel(desc_dma >> 32, gp->regs + RXDMA_DBHI); |
| 1815 | writel(desc_dma & 0xffffffff, gp->regs + RXDMA_DBLOW); |
| 1816 | |
| 1817 | writel(RX_RING_SIZE - 4, gp->regs + RXDMA_KICK); |
| 1818 | |
| 1819 | val = (((gp->rx_pause_off / 64) << 0) & RXDMA_PTHRESH_OFF); |
| 1820 | val |= (((gp->rx_pause_on / 64) << 12) & RXDMA_PTHRESH_ON); |
| 1821 | writel(val, gp->regs + RXDMA_PTHRESH); |
| 1822 | |
| 1823 | if (readl(gp->regs + GREG_BIFCFG) & GREG_BIFCFG_M66EN) |
| 1824 | writel(((5 & RXDMA_BLANK_IPKTS) | |
| 1825 | ((8 << 12) & RXDMA_BLANK_ITIME)), |
| 1826 | gp->regs + RXDMA_BLANK); |
| 1827 | else |
| 1828 | writel(((5 & RXDMA_BLANK_IPKTS) | |
| 1829 | ((4 << 12) & RXDMA_BLANK_ITIME)), |
| 1830 | gp->regs + RXDMA_BLANK); |
| 1831 | } |
| 1832 | |
| 1833 | /* Must be invoked under gp->lock and gp->tx_lock. */ |
| 1834 | static u32 gem_setup_multicast(struct gem *gp) |
| 1835 | { |
| 1836 | u32 rxcfg = 0; |
| 1837 | int i; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1838 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1839 | if ((gp->dev->flags & IFF_ALLMULTI) || |
Jiri Pirko | 4cd24ea | 2010-02-08 04:30:35 +0000 | [diff] [blame] | 1840 | (netdev_mc_count(gp->dev) > 256)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1841 | for (i=0; i<16; i++) |
| 1842 | writel(0xffff, gp->regs + MAC_HASH0 + (i << 2)); |
| 1843 | rxcfg |= MAC_RXCFG_HFE; |
| 1844 | } else if (gp->dev->flags & IFF_PROMISC) { |
| 1845 | rxcfg |= MAC_RXCFG_PROM; |
| 1846 | } else { |
| 1847 | u16 hash_table[16]; |
| 1848 | u32 crc; |
Jiri Pirko | 5508590 | 2010-02-18 00:42:54 +0000 | [diff] [blame] | 1849 | struct dev_mc_list *dmi; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1850 | int i; |
| 1851 | |
Jiri Pirko | 5508590 | 2010-02-18 00:42:54 +0000 | [diff] [blame] | 1852 | memset(hash_table, 0, sizeof(hash_table)); |
| 1853 | netdev_for_each_mc_addr(dmi, gp->dev) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1854 | char *addrs = dmi->dmi_addr; |
| 1855 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1856 | if (!(*addrs & 1)) |
| 1857 | continue; |
| 1858 | |
| 1859 | crc = ether_crc_le(6, addrs); |
| 1860 | crc >>= 24; |
| 1861 | hash_table[crc >> 4] |= 1 << (15 - (crc & 0xf)); |
| 1862 | } |
| 1863 | for (i=0; i<16; i++) |
| 1864 | writel(hash_table[i], gp->regs + MAC_HASH0 + (i << 2)); |
| 1865 | rxcfg |= MAC_RXCFG_HFE; |
| 1866 | } |
| 1867 | |
| 1868 | return rxcfg; |
| 1869 | } |
| 1870 | |
| 1871 | /* Must be invoked under gp->lock and gp->tx_lock. */ |
| 1872 | static void gem_init_mac(struct gem *gp) |
| 1873 | { |
| 1874 | unsigned char *e = &gp->dev->dev_addr[0]; |
| 1875 | |
| 1876 | writel(0x1bf0, gp->regs + MAC_SNDPAUSE); |
| 1877 | |
| 1878 | writel(0x00, gp->regs + MAC_IPG0); |
| 1879 | writel(0x08, gp->regs + MAC_IPG1); |
| 1880 | writel(0x04, gp->regs + MAC_IPG2); |
| 1881 | writel(0x40, gp->regs + MAC_STIME); |
| 1882 | writel(0x40, gp->regs + MAC_MINFSZ); |
| 1883 | |
| 1884 | /* Ethernet payload + header + FCS + optional VLAN tag. */ |
| 1885 | writel(0x20000000 | (gp->rx_buf_sz + 4), gp->regs + MAC_MAXFSZ); |
| 1886 | |
| 1887 | writel(0x07, gp->regs + MAC_PASIZE); |
| 1888 | writel(0x04, gp->regs + MAC_JAMSIZE); |
| 1889 | writel(0x10, gp->regs + MAC_ATTLIM); |
| 1890 | writel(0x8808, gp->regs + MAC_MCTYPE); |
| 1891 | |
| 1892 | writel((e[5] | (e[4] << 8)) & 0x3ff, gp->regs + MAC_RANDSEED); |
| 1893 | |
| 1894 | writel((e[4] << 8) | e[5], gp->regs + MAC_ADDR0); |
| 1895 | writel((e[2] << 8) | e[3], gp->regs + MAC_ADDR1); |
| 1896 | writel((e[0] << 8) | e[1], gp->regs + MAC_ADDR2); |
| 1897 | |
| 1898 | writel(0, gp->regs + MAC_ADDR3); |
| 1899 | writel(0, gp->regs + MAC_ADDR4); |
| 1900 | writel(0, gp->regs + MAC_ADDR5); |
| 1901 | |
| 1902 | writel(0x0001, gp->regs + MAC_ADDR6); |
| 1903 | writel(0xc200, gp->regs + MAC_ADDR7); |
| 1904 | writel(0x0180, gp->regs + MAC_ADDR8); |
| 1905 | |
| 1906 | writel(0, gp->regs + MAC_AFILT0); |
| 1907 | writel(0, gp->regs + MAC_AFILT1); |
| 1908 | writel(0, gp->regs + MAC_AFILT2); |
| 1909 | writel(0, gp->regs + MAC_AF21MSK); |
| 1910 | writel(0, gp->regs + MAC_AF0MSK); |
| 1911 | |
| 1912 | gp->mac_rx_cfg = gem_setup_multicast(gp); |
| 1913 | #ifdef STRIP_FCS |
| 1914 | gp->mac_rx_cfg |= MAC_RXCFG_SFCS; |
| 1915 | #endif |
| 1916 | writel(0, gp->regs + MAC_NCOLL); |
| 1917 | writel(0, gp->regs + MAC_FASUCC); |
| 1918 | writel(0, gp->regs + MAC_ECOLL); |
| 1919 | writel(0, gp->regs + MAC_LCOLL); |
| 1920 | writel(0, gp->regs + MAC_DTIMER); |
| 1921 | writel(0, gp->regs + MAC_PATMPS); |
| 1922 | writel(0, gp->regs + MAC_RFCTR); |
| 1923 | writel(0, gp->regs + MAC_LERR); |
| 1924 | writel(0, gp->regs + MAC_AERR); |
| 1925 | writel(0, gp->regs + MAC_FCSERR); |
| 1926 | writel(0, gp->regs + MAC_RXCVERR); |
| 1927 | |
| 1928 | /* Clear RX/TX/MAC/XIF config, we will set these up and enable |
| 1929 | * them once a link is established. |
| 1930 | */ |
| 1931 | writel(0, gp->regs + MAC_TXCFG); |
| 1932 | writel(gp->mac_rx_cfg, gp->regs + MAC_RXCFG); |
| 1933 | writel(0, gp->regs + MAC_MCCFG); |
| 1934 | writel(0, gp->regs + MAC_XIFCFG); |
| 1935 | |
| 1936 | /* Setup MAC interrupts. We want to get all of the interesting |
| 1937 | * counter expiration events, but we do not want to hear about |
| 1938 | * normal rx/tx as the DMA engine tells us that. |
| 1939 | */ |
| 1940 | writel(MAC_TXSTAT_XMIT, gp->regs + MAC_TXMASK); |
| 1941 | writel(MAC_RXSTAT_RCV, gp->regs + MAC_RXMASK); |
| 1942 | |
| 1943 | /* Don't enable even the PAUSE interrupts for now, we |
| 1944 | * make no use of those events other than to record them. |
| 1945 | */ |
| 1946 | writel(0xffffffff, gp->regs + MAC_MCMASK); |
| 1947 | |
| 1948 | /* Don't enable GEM's WOL in normal operations |
| 1949 | */ |
| 1950 | if (gp->has_wol) |
| 1951 | writel(0, gp->regs + WOL_WAKECSR); |
| 1952 | } |
| 1953 | |
| 1954 | /* Must be invoked under gp->lock and gp->tx_lock. */ |
| 1955 | static void gem_init_pause_thresholds(struct gem *gp) |
| 1956 | { |
| 1957 | u32 cfg; |
| 1958 | |
| 1959 | /* Calculate pause thresholds. Setting the OFF threshold to the |
| 1960 | * full RX fifo size effectively disables PAUSE generation which |
| 1961 | * is what we do for 10/100 only GEMs which have FIFOs too small |
| 1962 | * to make real gains from PAUSE. |
| 1963 | */ |
| 1964 | if (gp->rx_fifo_sz <= (2 * 1024)) { |
| 1965 | gp->rx_pause_off = gp->rx_pause_on = gp->rx_fifo_sz; |
| 1966 | } else { |
| 1967 | int max_frame = (gp->rx_buf_sz + 4 + 64) & ~63; |
| 1968 | int off = (gp->rx_fifo_sz - (max_frame * 2)); |
| 1969 | int on = off - max_frame; |
| 1970 | |
| 1971 | gp->rx_pause_off = off; |
| 1972 | gp->rx_pause_on = on; |
| 1973 | } |
| 1974 | |
| 1975 | |
| 1976 | /* Configure the chip "burst" DMA mode & enable some |
| 1977 | * HW bug fixes on Apple version |
| 1978 | */ |
| 1979 | cfg = 0; |
| 1980 | if (gp->pdev->vendor == PCI_VENDOR_ID_APPLE) |
| 1981 | cfg |= GREG_CFG_RONPAULBIT | GREG_CFG_ENBUG2FIX; |
| 1982 | #if !defined(CONFIG_SPARC64) && !defined(CONFIG_ALPHA) |
| 1983 | cfg |= GREG_CFG_IBURST; |
| 1984 | #endif |
| 1985 | cfg |= ((31 << 1) & GREG_CFG_TXDMALIM); |
| 1986 | cfg |= ((31 << 6) & GREG_CFG_RXDMALIM); |
| 1987 | writel(cfg, gp->regs + GREG_CFG); |
| 1988 | |
| 1989 | /* If Infinite Burst didn't stick, then use different |
| 1990 | * thresholds (and Apple bug fixes don't exist) |
| 1991 | */ |
| 1992 | if (!(readl(gp->regs + GREG_CFG) & GREG_CFG_IBURST)) { |
| 1993 | cfg = ((2 << 1) & GREG_CFG_TXDMALIM); |
| 1994 | cfg |= ((8 << 6) & GREG_CFG_RXDMALIM); |
| 1995 | writel(cfg, gp->regs + GREG_CFG); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1996 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1997 | } |
| 1998 | |
| 1999 | static int gem_check_invariants(struct gem *gp) |
| 2000 | { |
| 2001 | struct pci_dev *pdev = gp->pdev; |
| 2002 | u32 mif_cfg; |
| 2003 | |
| 2004 | /* On Apple's sungem, we can't rely on registers as the chip |
| 2005 | * was been powered down by the firmware. The PHY is looked |
| 2006 | * up later on. |
| 2007 | */ |
| 2008 | if (pdev->vendor == PCI_VENDOR_ID_APPLE) { |
| 2009 | gp->phy_type = phy_mii_mdio0; |
| 2010 | gp->tx_fifo_sz = readl(gp->regs + TXDMA_FSZ) * 64; |
| 2011 | gp->rx_fifo_sz = readl(gp->regs + RXDMA_FSZ) * 64; |
| 2012 | gp->swrst_base = 0; |
| 2013 | |
| 2014 | mif_cfg = readl(gp->regs + MIF_CFG); |
| 2015 | mif_cfg &= ~(MIF_CFG_PSELECT|MIF_CFG_POLL|MIF_CFG_BBMODE|MIF_CFG_MDI1); |
| 2016 | mif_cfg |= MIF_CFG_MDI0; |
| 2017 | writel(mif_cfg, gp->regs + MIF_CFG); |
| 2018 | writel(PCS_DMODE_MGM, gp->regs + PCS_DMODE); |
| 2019 | writel(MAC_XIFCFG_OE, gp->regs + MAC_XIFCFG); |
| 2020 | |
| 2021 | /* We hard-code the PHY address so we can properly bring it out of |
| 2022 | * reset later on, we can't really probe it at this point, though |
| 2023 | * that isn't an issue. |
| 2024 | */ |
| 2025 | if (gp->pdev->device == PCI_DEVICE_ID_APPLE_K2_GMAC) |
| 2026 | gp->mii_phy_addr = 1; |
| 2027 | else |
| 2028 | gp->mii_phy_addr = 0; |
| 2029 | |
| 2030 | return 0; |
| 2031 | } |
| 2032 | |
| 2033 | mif_cfg = readl(gp->regs + MIF_CFG); |
| 2034 | |
| 2035 | if (pdev->vendor == PCI_VENDOR_ID_SUN && |
| 2036 | pdev->device == PCI_DEVICE_ID_SUN_RIO_GEM) { |
| 2037 | /* One of the MII PHYs _must_ be present |
| 2038 | * as this chip has no gigabit PHY. |
| 2039 | */ |
| 2040 | if ((mif_cfg & (MIF_CFG_MDI0 | MIF_CFG_MDI1)) == 0) { |
| 2041 | printk(KERN_ERR PFX "RIO GEM lacks MII phy, mif_cfg[%08x]\n", |
| 2042 | mif_cfg); |
| 2043 | return -1; |
| 2044 | } |
| 2045 | } |
| 2046 | |
| 2047 | /* Determine initial PHY interface type guess. MDIO1 is the |
| 2048 | * external PHY and thus takes precedence over MDIO0. |
| 2049 | */ |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 2050 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2051 | if (mif_cfg & MIF_CFG_MDI1) { |
| 2052 | gp->phy_type = phy_mii_mdio1; |
| 2053 | mif_cfg |= MIF_CFG_PSELECT; |
| 2054 | writel(mif_cfg, gp->regs + MIF_CFG); |
| 2055 | } else if (mif_cfg & MIF_CFG_MDI0) { |
| 2056 | gp->phy_type = phy_mii_mdio0; |
| 2057 | mif_cfg &= ~MIF_CFG_PSELECT; |
| 2058 | writel(mif_cfg, gp->regs + MIF_CFG); |
| 2059 | } else { |
David S. Miller | e54d551 | 2009-11-17 04:46:18 -0800 | [diff] [blame] | 2060 | #ifdef CONFIG_SPARC |
| 2061 | const char *p; |
| 2062 | |
| 2063 | p = of_get_property(gp->of_node, "shared-pins", NULL); |
| 2064 | if (p && !strcmp(p, "serdes")) |
| 2065 | gp->phy_type = phy_serdes; |
| 2066 | else |
| 2067 | #endif |
| 2068 | gp->phy_type = phy_serialink; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2069 | } |
| 2070 | if (gp->phy_type == phy_mii_mdio1 || |
| 2071 | gp->phy_type == phy_mii_mdio0) { |
| 2072 | int i; |
| 2073 | |
| 2074 | for (i = 0; i < 32; i++) { |
| 2075 | gp->mii_phy_addr = i; |
| 2076 | if (phy_read(gp, MII_BMCR) != 0xffff) |
| 2077 | break; |
| 2078 | } |
| 2079 | if (i == 32) { |
| 2080 | if (pdev->device != PCI_DEVICE_ID_SUN_GEM) { |
| 2081 | printk(KERN_ERR PFX "RIO MII phy will not respond.\n"); |
| 2082 | return -1; |
| 2083 | } |
| 2084 | gp->phy_type = phy_serdes; |
| 2085 | } |
| 2086 | } |
| 2087 | |
| 2088 | /* Fetch the FIFO configurations now too. */ |
| 2089 | gp->tx_fifo_sz = readl(gp->regs + TXDMA_FSZ) * 64; |
| 2090 | gp->rx_fifo_sz = readl(gp->regs + RXDMA_FSZ) * 64; |
| 2091 | |
| 2092 | if (pdev->vendor == PCI_VENDOR_ID_SUN) { |
| 2093 | if (pdev->device == PCI_DEVICE_ID_SUN_GEM) { |
| 2094 | if (gp->tx_fifo_sz != (9 * 1024) || |
| 2095 | gp->rx_fifo_sz != (20 * 1024)) { |
| 2096 | printk(KERN_ERR PFX "GEM has bogus fifo sizes tx(%d) rx(%d)\n", |
| 2097 | gp->tx_fifo_sz, gp->rx_fifo_sz); |
| 2098 | return -1; |
| 2099 | } |
| 2100 | gp->swrst_base = 0; |
| 2101 | } else { |
| 2102 | if (gp->tx_fifo_sz != (2 * 1024) || |
| 2103 | gp->rx_fifo_sz != (2 * 1024)) { |
| 2104 | printk(KERN_ERR PFX "RIO GEM has bogus fifo sizes tx(%d) rx(%d)\n", |
| 2105 | gp->tx_fifo_sz, gp->rx_fifo_sz); |
| 2106 | return -1; |
| 2107 | } |
| 2108 | gp->swrst_base = (64 / 4) << GREG_SWRST_CACHE_SHIFT; |
| 2109 | } |
| 2110 | } |
| 2111 | |
| 2112 | return 0; |
| 2113 | } |
| 2114 | |
| 2115 | /* Must be invoked under gp->lock and gp->tx_lock. */ |
| 2116 | static void gem_reinit_chip(struct gem *gp) |
| 2117 | { |
| 2118 | /* Reset the chip */ |
| 2119 | gem_reset(gp); |
| 2120 | |
| 2121 | /* Make sure ints are disabled */ |
| 2122 | gem_disable_ints(gp); |
| 2123 | |
| 2124 | /* Allocate & setup ring buffers */ |
| 2125 | gem_init_rings(gp); |
| 2126 | |
| 2127 | /* Configure pause thresholds */ |
| 2128 | gem_init_pause_thresholds(gp); |
| 2129 | |
| 2130 | /* Init DMA & MAC engines */ |
| 2131 | gem_init_dma(gp); |
| 2132 | gem_init_mac(gp); |
| 2133 | } |
| 2134 | |
| 2135 | |
| 2136 | /* Must be invoked with no lock held. */ |
| 2137 | static void gem_stop_phy(struct gem *gp, int wol) |
| 2138 | { |
David S. Miller | 7fb76aa | 2006-01-31 17:09:20 -0800 | [diff] [blame] | 2139 | u32 mifcfg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2140 | unsigned long flags; |
| 2141 | |
| 2142 | /* Let the chip settle down a bit, it seems that helps |
| 2143 | * for sleep mode on some models |
| 2144 | */ |
| 2145 | msleep(10); |
| 2146 | |
| 2147 | /* Make sure we aren't polling PHY status change. We |
| 2148 | * don't currently use that feature though |
| 2149 | */ |
David S. Miller | 7fb76aa | 2006-01-31 17:09:20 -0800 | [diff] [blame] | 2150 | mifcfg = readl(gp->regs + MIF_CFG); |
| 2151 | mifcfg &= ~MIF_CFG_POLL; |
| 2152 | writel(mifcfg, gp->regs + MIF_CFG); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2153 | |
| 2154 | if (wol && gp->has_wol) { |
| 2155 | unsigned char *e = &gp->dev->dev_addr[0]; |
| 2156 | u32 csr; |
| 2157 | |
| 2158 | /* Setup wake-on-lan for MAGIC packet */ |
| 2159 | writel(MAC_RXCFG_HFE | MAC_RXCFG_SFCS | MAC_RXCFG_ENAB, |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 2160 | gp->regs + MAC_RXCFG); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2161 | writel((e[4] << 8) | e[5], gp->regs + WOL_MATCH0); |
| 2162 | writel((e[2] << 8) | e[3], gp->regs + WOL_MATCH1); |
| 2163 | writel((e[0] << 8) | e[1], gp->regs + WOL_MATCH2); |
| 2164 | |
| 2165 | writel(WOL_MCOUNT_N | WOL_MCOUNT_M, gp->regs + WOL_MCOUNT); |
| 2166 | csr = WOL_WAKECSR_ENABLE; |
| 2167 | if ((readl(gp->regs + MAC_XIFCFG) & MAC_XIFCFG_GMII) == 0) |
| 2168 | csr |= WOL_WAKECSR_MII; |
| 2169 | writel(csr, gp->regs + WOL_WAKECSR); |
| 2170 | } else { |
| 2171 | writel(0, gp->regs + MAC_RXCFG); |
| 2172 | (void)readl(gp->regs + MAC_RXCFG); |
| 2173 | /* Machine sleep will die in strange ways if we |
| 2174 | * dont wait a bit here, looks like the chip takes |
| 2175 | * some time to really shut down |
| 2176 | */ |
| 2177 | msleep(10); |
| 2178 | } |
| 2179 | |
| 2180 | writel(0, gp->regs + MAC_TXCFG); |
| 2181 | writel(0, gp->regs + MAC_XIFCFG); |
| 2182 | writel(0, gp->regs + TXDMA_CFG); |
| 2183 | writel(0, gp->regs + RXDMA_CFG); |
| 2184 | |
| 2185 | if (!wol) { |
| 2186 | spin_lock_irqsave(&gp->lock, flags); |
| 2187 | spin_lock(&gp->tx_lock); |
| 2188 | gem_reset(gp); |
| 2189 | writel(MAC_TXRST_CMD, gp->regs + MAC_TXRST); |
| 2190 | writel(MAC_RXRST_CMD, gp->regs + MAC_RXRST); |
| 2191 | spin_unlock(&gp->tx_lock); |
| 2192 | spin_unlock_irqrestore(&gp->lock, flags); |
| 2193 | |
| 2194 | /* No need to take the lock here */ |
| 2195 | |
| 2196 | if (found_mii_phy(gp) && gp->phy_mii.def->ops->suspend) |
| 2197 | gp->phy_mii.def->ops->suspend(&gp->phy_mii); |
| 2198 | |
| 2199 | /* According to Apple, we must set the MDIO pins to this begnign |
| 2200 | * state or we may 1) eat more current, 2) damage some PHYs |
| 2201 | */ |
David S. Miller | 7fb76aa | 2006-01-31 17:09:20 -0800 | [diff] [blame] | 2202 | writel(mifcfg | MIF_CFG_BBMODE, gp->regs + MIF_CFG); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2203 | writel(0, gp->regs + MIF_BBCLK); |
| 2204 | writel(0, gp->regs + MIF_BBDATA); |
| 2205 | writel(0, gp->regs + MIF_BBOENAB); |
| 2206 | writel(MAC_XIFCFG_GMII | MAC_XIFCFG_LBCK, gp->regs + MAC_XIFCFG); |
| 2207 | (void) readl(gp->regs + MAC_XIFCFG); |
| 2208 | } |
| 2209 | } |
| 2210 | |
| 2211 | |
| 2212 | static int gem_do_start(struct net_device *dev) |
| 2213 | { |
Wang Chen | 8f15ea4 | 2008-11-12 23:38:36 -0800 | [diff] [blame] | 2214 | struct gem *gp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2215 | unsigned long flags; |
| 2216 | |
| 2217 | spin_lock_irqsave(&gp->lock, flags); |
| 2218 | spin_lock(&gp->tx_lock); |
| 2219 | |
| 2220 | /* Enable the cell */ |
| 2221 | gem_get_cell(gp); |
| 2222 | |
| 2223 | /* Init & setup chip hardware */ |
| 2224 | gem_reinit_chip(gp); |
| 2225 | |
| 2226 | gp->running = 1; |
| 2227 | |
Ilkka Virta | 71822fa | 2009-02-06 22:00:36 -0800 | [diff] [blame] | 2228 | napi_enable(&gp->napi); |
| 2229 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2230 | if (gp->lstate == link_up) { |
| 2231 | netif_carrier_on(gp->dev); |
| 2232 | gem_set_link_modes(gp); |
| 2233 | } |
| 2234 | |
| 2235 | netif_wake_queue(gp->dev); |
| 2236 | |
| 2237 | spin_unlock(&gp->tx_lock); |
| 2238 | spin_unlock_irqrestore(&gp->lock, flags); |
| 2239 | |
| 2240 | if (request_irq(gp->pdev->irq, gem_interrupt, |
Thomas Gleixner | 1fb9df5 | 2006-07-01 19:29:39 -0700 | [diff] [blame] | 2241 | IRQF_SHARED, dev->name, (void *)dev)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2242 | printk(KERN_ERR "%s: failed to request irq !\n", gp->dev->name); |
| 2243 | |
| 2244 | spin_lock_irqsave(&gp->lock, flags); |
| 2245 | spin_lock(&gp->tx_lock); |
| 2246 | |
Ilkka Virta | 71822fa | 2009-02-06 22:00:36 -0800 | [diff] [blame] | 2247 | napi_disable(&gp->napi); |
| 2248 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2249 | gp->running = 0; |
| 2250 | gem_reset(gp); |
| 2251 | gem_clean_rings(gp); |
| 2252 | gem_put_cell(gp); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 2253 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2254 | spin_unlock(&gp->tx_lock); |
| 2255 | spin_unlock_irqrestore(&gp->lock, flags); |
| 2256 | |
| 2257 | return -EAGAIN; |
| 2258 | } |
| 2259 | |
| 2260 | return 0; |
| 2261 | } |
| 2262 | |
| 2263 | static void gem_do_stop(struct net_device *dev, int wol) |
| 2264 | { |
Wang Chen | 8f15ea4 | 2008-11-12 23:38:36 -0800 | [diff] [blame] | 2265 | struct gem *gp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2266 | unsigned long flags; |
| 2267 | |
| 2268 | spin_lock_irqsave(&gp->lock, flags); |
| 2269 | spin_lock(&gp->tx_lock); |
| 2270 | |
| 2271 | gp->running = 0; |
| 2272 | |
| 2273 | /* Stop netif queue */ |
| 2274 | netif_stop_queue(dev); |
| 2275 | |
| 2276 | /* Make sure ints are disabled */ |
| 2277 | gem_disable_ints(gp); |
| 2278 | |
| 2279 | /* We can drop the lock now */ |
| 2280 | spin_unlock(&gp->tx_lock); |
| 2281 | spin_unlock_irqrestore(&gp->lock, flags); |
| 2282 | |
| 2283 | /* If we are going to sleep with WOL */ |
| 2284 | gem_stop_dma(gp); |
| 2285 | msleep(10); |
| 2286 | if (!wol) |
| 2287 | gem_reset(gp); |
| 2288 | msleep(10); |
| 2289 | |
| 2290 | /* Get rid of rings */ |
| 2291 | gem_clean_rings(gp); |
| 2292 | |
| 2293 | /* No irq needed anymore */ |
| 2294 | free_irq(gp->pdev->irq, (void *) dev); |
| 2295 | |
| 2296 | /* Cell not needed neither if no WOL */ |
| 2297 | if (!wol) { |
| 2298 | spin_lock_irqsave(&gp->lock, flags); |
| 2299 | gem_put_cell(gp); |
| 2300 | spin_unlock_irqrestore(&gp->lock, flags); |
| 2301 | } |
| 2302 | } |
| 2303 | |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 2304 | static void gem_reset_task(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2305 | { |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 2306 | struct gem *gp = container_of(work, struct gem, reset_task); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2307 | |
Ingo Molnar | e3968fc | 2006-03-20 22:34:25 -0800 | [diff] [blame] | 2308 | mutex_lock(&gp->pm_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2309 | |
Johannes Berg | dde655c9 | 2007-11-29 21:51:36 +1100 | [diff] [blame] | 2310 | if (gp->opened) |
| 2311 | napi_disable(&gp->napi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2312 | |
| 2313 | spin_lock_irq(&gp->lock); |
| 2314 | spin_lock(&gp->tx_lock); |
| 2315 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2316 | if (gp->running) { |
| 2317 | netif_stop_queue(gp->dev); |
| 2318 | |
| 2319 | /* Reset the chip & rings */ |
| 2320 | gem_reinit_chip(gp); |
| 2321 | if (gp->lstate == link_up) |
| 2322 | gem_set_link_modes(gp); |
| 2323 | netif_wake_queue(gp->dev); |
| 2324 | } |
Johannes Berg | dde655c9 | 2007-11-29 21:51:36 +1100 | [diff] [blame] | 2325 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2326 | gp->reset_task_pending = 0; |
| 2327 | |
| 2328 | spin_unlock(&gp->tx_lock); |
| 2329 | spin_unlock_irq(&gp->lock); |
| 2330 | |
Johannes Berg | dde655c9 | 2007-11-29 21:51:36 +1100 | [diff] [blame] | 2331 | if (gp->opened) |
| 2332 | napi_enable(&gp->napi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2333 | |
Ingo Molnar | e3968fc | 2006-03-20 22:34:25 -0800 | [diff] [blame] | 2334 | mutex_unlock(&gp->pm_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2335 | } |
| 2336 | |
| 2337 | |
| 2338 | static int gem_open(struct net_device *dev) |
| 2339 | { |
Wang Chen | 8f15ea4 | 2008-11-12 23:38:36 -0800 | [diff] [blame] | 2340 | struct gem *gp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2341 | int rc = 0; |
| 2342 | |
Ingo Molnar | e3968fc | 2006-03-20 22:34:25 -0800 | [diff] [blame] | 2343 | mutex_lock(&gp->pm_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2344 | |
| 2345 | /* We need the cell enabled */ |
| 2346 | if (!gp->asleep) |
| 2347 | rc = gem_do_start(dev); |
| 2348 | gp->opened = (rc == 0); |
| 2349 | |
Ingo Molnar | e3968fc | 2006-03-20 22:34:25 -0800 | [diff] [blame] | 2350 | mutex_unlock(&gp->pm_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2351 | |
| 2352 | return rc; |
| 2353 | } |
| 2354 | |
| 2355 | static int gem_close(struct net_device *dev) |
| 2356 | { |
Wang Chen | 8f15ea4 | 2008-11-12 23:38:36 -0800 | [diff] [blame] | 2357 | struct gem *gp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2358 | |
Ingo Molnar | e3968fc | 2006-03-20 22:34:25 -0800 | [diff] [blame] | 2359 | mutex_lock(&gp->pm_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2360 | |
Johannes Berg | 62768e2 | 2007-11-12 18:09:25 -0800 | [diff] [blame] | 2361 | napi_disable(&gp->napi); |
| 2362 | |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 2363 | gp->opened = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2364 | if (!gp->asleep) |
| 2365 | gem_do_stop(dev, 0); |
| 2366 | |
Ingo Molnar | e3968fc | 2006-03-20 22:34:25 -0800 | [diff] [blame] | 2367 | mutex_unlock(&gp->pm_mutex); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 2368 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2369 | return 0; |
| 2370 | } |
| 2371 | |
| 2372 | #ifdef CONFIG_PM |
| 2373 | static int gem_suspend(struct pci_dev *pdev, pm_message_t state) |
| 2374 | { |
| 2375 | struct net_device *dev = pci_get_drvdata(pdev); |
Wang Chen | 8f15ea4 | 2008-11-12 23:38:36 -0800 | [diff] [blame] | 2376 | struct gem *gp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2377 | unsigned long flags; |
| 2378 | |
Ingo Molnar | e3968fc | 2006-03-20 22:34:25 -0800 | [diff] [blame] | 2379 | mutex_lock(&gp->pm_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2380 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2381 | printk(KERN_INFO "%s: suspending, WakeOnLan %s\n", |
| 2382 | dev->name, |
| 2383 | (gp->wake_on_lan && gp->opened) ? "enabled" : "disabled"); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 2384 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2385 | /* Keep the cell enabled during the entire operation */ |
| 2386 | spin_lock_irqsave(&gp->lock, flags); |
| 2387 | spin_lock(&gp->tx_lock); |
| 2388 | gem_get_cell(gp); |
| 2389 | spin_unlock(&gp->tx_lock); |
| 2390 | spin_unlock_irqrestore(&gp->lock, flags); |
| 2391 | |
| 2392 | /* If the driver is opened, we stop the MAC */ |
| 2393 | if (gp->opened) { |
Johannes Berg | 62768e2 | 2007-11-12 18:09:25 -0800 | [diff] [blame] | 2394 | napi_disable(&gp->napi); |
| 2395 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2396 | /* Stop traffic, mark us closed */ |
| 2397 | netif_device_detach(dev); |
| 2398 | |
| 2399 | /* Switch off MAC, remember WOL setting */ |
| 2400 | gp->asleep_wol = gp->wake_on_lan; |
| 2401 | gem_do_stop(dev, gp->asleep_wol); |
| 2402 | } else |
| 2403 | gp->asleep_wol = 0; |
| 2404 | |
| 2405 | /* Mark us asleep */ |
| 2406 | gp->asleep = 1; |
| 2407 | wmb(); |
| 2408 | |
| 2409 | /* Stop the link timer */ |
| 2410 | del_timer_sync(&gp->link_timer); |
| 2411 | |
Ingo Molnar | e3968fc | 2006-03-20 22:34:25 -0800 | [diff] [blame] | 2412 | /* Now we release the mutex to not block the reset task who |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2413 | * can take it too. We are marked asleep, so there will be no |
| 2414 | * conflict here |
| 2415 | */ |
Ingo Molnar | e3968fc | 2006-03-20 22:34:25 -0800 | [diff] [blame] | 2416 | mutex_unlock(&gp->pm_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2417 | |
| 2418 | /* Wait for a pending reset task to complete */ |
| 2419 | while (gp->reset_task_pending) |
| 2420 | yield(); |
| 2421 | flush_scheduled_work(); |
| 2422 | |
| 2423 | /* Shut the PHY down eventually and setup WOL */ |
| 2424 | gem_stop_phy(gp, gp->asleep_wol); |
| 2425 | |
| 2426 | /* Make sure bus master is disabled */ |
| 2427 | pci_disable_device(gp->pdev); |
| 2428 | |
| 2429 | /* Release the cell, no need to take a lock at this point since |
| 2430 | * nothing else can happen now |
| 2431 | */ |
| 2432 | gem_put_cell(gp); |
| 2433 | |
| 2434 | return 0; |
| 2435 | } |
| 2436 | |
| 2437 | static int gem_resume(struct pci_dev *pdev) |
| 2438 | { |
| 2439 | struct net_device *dev = pci_get_drvdata(pdev); |
Wang Chen | 8f15ea4 | 2008-11-12 23:38:36 -0800 | [diff] [blame] | 2440 | struct gem *gp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2441 | unsigned long flags; |
| 2442 | |
| 2443 | printk(KERN_INFO "%s: resuming\n", dev->name); |
| 2444 | |
Ingo Molnar | e3968fc | 2006-03-20 22:34:25 -0800 | [diff] [blame] | 2445 | mutex_lock(&gp->pm_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2446 | |
| 2447 | /* Keep the cell enabled during the entire operation, no need to |
| 2448 | * take a lock here tho since nothing else can happen while we are |
| 2449 | * marked asleep |
| 2450 | */ |
| 2451 | gem_get_cell(gp); |
| 2452 | |
| 2453 | /* Make sure PCI access and bus master are enabled */ |
| 2454 | if (pci_enable_device(gp->pdev)) { |
| 2455 | printk(KERN_ERR "%s: Can't re-enable chip !\n", |
| 2456 | dev->name); |
| 2457 | /* Put cell and forget it for now, it will be considered as |
| 2458 | * still asleep, a new sleep cycle may bring it back |
| 2459 | */ |
| 2460 | gem_put_cell(gp); |
Ingo Molnar | e3968fc | 2006-03-20 22:34:25 -0800 | [diff] [blame] | 2461 | mutex_unlock(&gp->pm_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2462 | return 0; |
| 2463 | } |
| 2464 | pci_set_master(gp->pdev); |
| 2465 | |
| 2466 | /* Reset everything */ |
| 2467 | gem_reset(gp); |
| 2468 | |
| 2469 | /* Mark us woken up */ |
| 2470 | gp->asleep = 0; |
| 2471 | wmb(); |
| 2472 | |
| 2473 | /* Bring the PHY back. Again, lock is useless at this point as |
| 2474 | * nothing can be happening until we restart the whole thing |
| 2475 | */ |
| 2476 | gem_init_phy(gp); |
| 2477 | |
| 2478 | /* If we were opened, bring everything back */ |
| 2479 | if (gp->opened) { |
| 2480 | /* Restart MAC */ |
| 2481 | gem_do_start(dev); |
| 2482 | |
| 2483 | /* Re-attach net device */ |
| 2484 | netif_device_attach(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2485 | } |
| 2486 | |
| 2487 | spin_lock_irqsave(&gp->lock, flags); |
| 2488 | spin_lock(&gp->tx_lock); |
| 2489 | |
| 2490 | /* If we had WOL enabled, the cell clock was never turned off during |
| 2491 | * sleep, so we end up beeing unbalanced. Fix that here |
| 2492 | */ |
| 2493 | if (gp->asleep_wol) |
| 2494 | gem_put_cell(gp); |
| 2495 | |
| 2496 | /* This function doesn't need to hold the cell, it will be held if the |
| 2497 | * driver is open by gem_do_start(). |
| 2498 | */ |
| 2499 | gem_put_cell(gp); |
| 2500 | |
| 2501 | spin_unlock(&gp->tx_lock); |
| 2502 | spin_unlock_irqrestore(&gp->lock, flags); |
| 2503 | |
Ingo Molnar | e3968fc | 2006-03-20 22:34:25 -0800 | [diff] [blame] | 2504 | mutex_unlock(&gp->pm_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2505 | |
| 2506 | return 0; |
| 2507 | } |
| 2508 | #endif /* CONFIG_PM */ |
| 2509 | |
| 2510 | static struct net_device_stats *gem_get_stats(struct net_device *dev) |
| 2511 | { |
Wang Chen | 8f15ea4 | 2008-11-12 23:38:36 -0800 | [diff] [blame] | 2512 | struct gem *gp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2513 | struct net_device_stats *stats = &gp->net_stats; |
| 2514 | |
| 2515 | spin_lock_irq(&gp->lock); |
| 2516 | spin_lock(&gp->tx_lock); |
| 2517 | |
| 2518 | /* I have seen this being called while the PM was in progress, |
| 2519 | * so we shield against this |
| 2520 | */ |
| 2521 | if (gp->running) { |
| 2522 | stats->rx_crc_errors += readl(gp->regs + MAC_FCSERR); |
| 2523 | writel(0, gp->regs + MAC_FCSERR); |
| 2524 | |
| 2525 | stats->rx_frame_errors += readl(gp->regs + MAC_AERR); |
| 2526 | writel(0, gp->regs + MAC_AERR); |
| 2527 | |
| 2528 | stats->rx_length_errors += readl(gp->regs + MAC_LERR); |
| 2529 | writel(0, gp->regs + MAC_LERR); |
| 2530 | |
| 2531 | stats->tx_aborted_errors += readl(gp->regs + MAC_ECOLL); |
| 2532 | stats->collisions += |
| 2533 | (readl(gp->regs + MAC_ECOLL) + |
| 2534 | readl(gp->regs + MAC_LCOLL)); |
| 2535 | writel(0, gp->regs + MAC_ECOLL); |
| 2536 | writel(0, gp->regs + MAC_LCOLL); |
| 2537 | } |
| 2538 | |
| 2539 | spin_unlock(&gp->tx_lock); |
| 2540 | spin_unlock_irq(&gp->lock); |
| 2541 | |
| 2542 | return &gp->net_stats; |
| 2543 | } |
| 2544 | |
Ruben Vandeginste | 09c72ec | 2007-03-26 14:43:49 -0700 | [diff] [blame] | 2545 | static int gem_set_mac_address(struct net_device *dev, void *addr) |
| 2546 | { |
| 2547 | struct sockaddr *macaddr = (struct sockaddr *) addr; |
Wang Chen | 8f15ea4 | 2008-11-12 23:38:36 -0800 | [diff] [blame] | 2548 | struct gem *gp = netdev_priv(dev); |
Ruben Vandeginste | 09c72ec | 2007-03-26 14:43:49 -0700 | [diff] [blame] | 2549 | unsigned char *e = &dev->dev_addr[0]; |
| 2550 | |
| 2551 | if (!is_valid_ether_addr(macaddr->sa_data)) |
| 2552 | return -EADDRNOTAVAIL; |
| 2553 | |
| 2554 | if (!netif_running(dev) || !netif_device_present(dev)) { |
| 2555 | /* We'll just catch it later when the |
| 2556 | * device is up'd or resumed. |
| 2557 | */ |
| 2558 | memcpy(dev->dev_addr, macaddr->sa_data, dev->addr_len); |
| 2559 | return 0; |
| 2560 | } |
| 2561 | |
| 2562 | mutex_lock(&gp->pm_mutex); |
| 2563 | memcpy(dev->dev_addr, macaddr->sa_data, dev->addr_len); |
| 2564 | if (gp->running) { |
| 2565 | writel((e[4] << 8) | e[5], gp->regs + MAC_ADDR0); |
| 2566 | writel((e[2] << 8) | e[3], gp->regs + MAC_ADDR1); |
| 2567 | writel((e[0] << 8) | e[1], gp->regs + MAC_ADDR2); |
| 2568 | } |
| 2569 | mutex_unlock(&gp->pm_mutex); |
| 2570 | |
| 2571 | return 0; |
| 2572 | } |
| 2573 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2574 | static void gem_set_multicast(struct net_device *dev) |
| 2575 | { |
Wang Chen | 8f15ea4 | 2008-11-12 23:38:36 -0800 | [diff] [blame] | 2576 | struct gem *gp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2577 | u32 rxcfg, rxcfg_new; |
| 2578 | int limit = 10000; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 2579 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2580 | |
| 2581 | spin_lock_irq(&gp->lock); |
| 2582 | spin_lock(&gp->tx_lock); |
| 2583 | |
| 2584 | if (!gp->running) |
| 2585 | goto bail; |
| 2586 | |
| 2587 | netif_stop_queue(dev); |
| 2588 | |
| 2589 | rxcfg = readl(gp->regs + MAC_RXCFG); |
| 2590 | rxcfg_new = gem_setup_multicast(gp); |
| 2591 | #ifdef STRIP_FCS |
| 2592 | rxcfg_new |= MAC_RXCFG_SFCS; |
| 2593 | #endif |
| 2594 | gp->mac_rx_cfg = rxcfg_new; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 2595 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2596 | writel(rxcfg & ~MAC_RXCFG_ENAB, gp->regs + MAC_RXCFG); |
| 2597 | while (readl(gp->regs + MAC_RXCFG) & MAC_RXCFG_ENAB) { |
| 2598 | if (!limit--) |
| 2599 | break; |
| 2600 | udelay(10); |
| 2601 | } |
| 2602 | |
| 2603 | rxcfg &= ~(MAC_RXCFG_PROM | MAC_RXCFG_HFE); |
| 2604 | rxcfg |= rxcfg_new; |
| 2605 | |
| 2606 | writel(rxcfg, gp->regs + MAC_RXCFG); |
| 2607 | |
| 2608 | netif_wake_queue(dev); |
| 2609 | |
| 2610 | bail: |
| 2611 | spin_unlock(&gp->tx_lock); |
| 2612 | spin_unlock_irq(&gp->lock); |
| 2613 | } |
| 2614 | |
| 2615 | /* Jumbo-grams don't seem to work :-( */ |
| 2616 | #define GEM_MIN_MTU 68 |
| 2617 | #if 1 |
| 2618 | #define GEM_MAX_MTU 1500 |
| 2619 | #else |
| 2620 | #define GEM_MAX_MTU 9000 |
| 2621 | #endif |
| 2622 | |
| 2623 | static int gem_change_mtu(struct net_device *dev, int new_mtu) |
| 2624 | { |
Wang Chen | 8f15ea4 | 2008-11-12 23:38:36 -0800 | [diff] [blame] | 2625 | struct gem *gp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2626 | |
| 2627 | if (new_mtu < GEM_MIN_MTU || new_mtu > GEM_MAX_MTU) |
| 2628 | return -EINVAL; |
| 2629 | |
| 2630 | if (!netif_running(dev) || !netif_device_present(dev)) { |
| 2631 | /* We'll just catch it later when the |
| 2632 | * device is up'd or resumed. |
| 2633 | */ |
| 2634 | dev->mtu = new_mtu; |
| 2635 | return 0; |
| 2636 | } |
| 2637 | |
Ingo Molnar | e3968fc | 2006-03-20 22:34:25 -0800 | [diff] [blame] | 2638 | mutex_lock(&gp->pm_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2639 | spin_lock_irq(&gp->lock); |
| 2640 | spin_lock(&gp->tx_lock); |
| 2641 | dev->mtu = new_mtu; |
| 2642 | if (gp->running) { |
| 2643 | gem_reinit_chip(gp); |
| 2644 | if (gp->lstate == link_up) |
| 2645 | gem_set_link_modes(gp); |
| 2646 | } |
| 2647 | spin_unlock(&gp->tx_lock); |
| 2648 | spin_unlock_irq(&gp->lock); |
Ingo Molnar | e3968fc | 2006-03-20 22:34:25 -0800 | [diff] [blame] | 2649 | mutex_unlock(&gp->pm_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2650 | |
| 2651 | return 0; |
| 2652 | } |
| 2653 | |
| 2654 | static void gem_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) |
| 2655 | { |
Wang Chen | 8f15ea4 | 2008-11-12 23:38:36 -0800 | [diff] [blame] | 2656 | struct gem *gp = netdev_priv(dev); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 2657 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2658 | strcpy(info->driver, DRV_NAME); |
| 2659 | strcpy(info->version, DRV_VERSION); |
| 2660 | strcpy(info->bus_info, pci_name(gp->pdev)); |
| 2661 | } |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 2662 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2663 | static int gem_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
| 2664 | { |
Wang Chen | 8f15ea4 | 2008-11-12 23:38:36 -0800 | [diff] [blame] | 2665 | struct gem *gp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2666 | |
| 2667 | if (gp->phy_type == phy_mii_mdio0 || |
| 2668 | gp->phy_type == phy_mii_mdio1) { |
| 2669 | if (gp->phy_mii.def) |
| 2670 | cmd->supported = gp->phy_mii.def->features; |
| 2671 | else |
| 2672 | cmd->supported = (SUPPORTED_10baseT_Half | |
| 2673 | SUPPORTED_10baseT_Full); |
| 2674 | |
| 2675 | /* XXX hardcoded stuff for now */ |
| 2676 | cmd->port = PORT_MII; |
| 2677 | cmd->transceiver = XCVR_EXTERNAL; |
| 2678 | cmd->phy_address = 0; /* XXX fixed PHYAD */ |
| 2679 | |
| 2680 | /* Return current PHY settings */ |
| 2681 | spin_lock_irq(&gp->lock); |
| 2682 | cmd->autoneg = gp->want_autoneg; |
| 2683 | cmd->speed = gp->phy_mii.speed; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 2684 | cmd->duplex = gp->phy_mii.duplex; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2685 | cmd->advertising = gp->phy_mii.advertising; |
| 2686 | |
| 2687 | /* If we started with a forced mode, we don't have a default |
| 2688 | * advertise set, we need to return something sensible so |
| 2689 | * userland can re-enable autoneg properly. |
| 2690 | */ |
| 2691 | if (cmd->advertising == 0) |
| 2692 | cmd->advertising = cmd->supported; |
| 2693 | spin_unlock_irq(&gp->lock); |
| 2694 | } else { // XXX PCS ? |
| 2695 | cmd->supported = |
| 2696 | (SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full | |
| 2697 | SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full | |
| 2698 | SUPPORTED_Autoneg); |
| 2699 | cmd->advertising = cmd->supported; |
| 2700 | cmd->speed = 0; |
| 2701 | cmd->duplex = cmd->port = cmd->phy_address = |
| 2702 | cmd->transceiver = cmd->autoneg = 0; |
Hermann Lauer | fbf0229 | 2008-12-09 15:39:14 -0800 | [diff] [blame] | 2703 | |
| 2704 | /* serdes means usually a Fibre connector, with most fixed */ |
| 2705 | if (gp->phy_type == phy_serdes) { |
| 2706 | cmd->port = PORT_FIBRE; |
| 2707 | cmd->supported = (SUPPORTED_1000baseT_Half | |
| 2708 | SUPPORTED_1000baseT_Full | |
| 2709 | SUPPORTED_FIBRE | SUPPORTED_Autoneg | |
| 2710 | SUPPORTED_Pause | SUPPORTED_Asym_Pause); |
| 2711 | cmd->advertising = cmd->supported; |
| 2712 | cmd->transceiver = XCVR_INTERNAL; |
| 2713 | if (gp->lstate == link_up) |
| 2714 | cmd->speed = SPEED_1000; |
| 2715 | cmd->duplex = DUPLEX_FULL; |
| 2716 | cmd->autoneg = 1; |
| 2717 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2718 | } |
| 2719 | cmd->maxtxpkt = cmd->maxrxpkt = 0; |
| 2720 | |
| 2721 | return 0; |
| 2722 | } |
| 2723 | |
| 2724 | static int gem_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
| 2725 | { |
Wang Chen | 8f15ea4 | 2008-11-12 23:38:36 -0800 | [diff] [blame] | 2726 | struct gem *gp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2727 | |
| 2728 | /* Verify the settings we care about. */ |
| 2729 | if (cmd->autoneg != AUTONEG_ENABLE && |
| 2730 | cmd->autoneg != AUTONEG_DISABLE) |
| 2731 | return -EINVAL; |
| 2732 | |
| 2733 | if (cmd->autoneg == AUTONEG_ENABLE && |
| 2734 | cmd->advertising == 0) |
| 2735 | return -EINVAL; |
| 2736 | |
| 2737 | if (cmd->autoneg == AUTONEG_DISABLE && |
| 2738 | ((cmd->speed != SPEED_1000 && |
| 2739 | cmd->speed != SPEED_100 && |
| 2740 | cmd->speed != SPEED_10) || |
| 2741 | (cmd->duplex != DUPLEX_HALF && |
| 2742 | cmd->duplex != DUPLEX_FULL))) |
| 2743 | return -EINVAL; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 2744 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2745 | /* Apply settings and restart link process. */ |
| 2746 | spin_lock_irq(&gp->lock); |
| 2747 | gem_get_cell(gp); |
| 2748 | gem_begin_auto_negotiation(gp, cmd); |
| 2749 | gem_put_cell(gp); |
| 2750 | spin_unlock_irq(&gp->lock); |
| 2751 | |
| 2752 | return 0; |
| 2753 | } |
| 2754 | |
| 2755 | static int gem_nway_reset(struct net_device *dev) |
| 2756 | { |
Wang Chen | 8f15ea4 | 2008-11-12 23:38:36 -0800 | [diff] [blame] | 2757 | struct gem *gp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2758 | |
| 2759 | if (!gp->want_autoneg) |
| 2760 | return -EINVAL; |
| 2761 | |
| 2762 | /* Restart link process. */ |
| 2763 | spin_lock_irq(&gp->lock); |
| 2764 | gem_get_cell(gp); |
| 2765 | gem_begin_auto_negotiation(gp, NULL); |
| 2766 | gem_put_cell(gp); |
| 2767 | spin_unlock_irq(&gp->lock); |
| 2768 | |
| 2769 | return 0; |
| 2770 | } |
| 2771 | |
| 2772 | static u32 gem_get_msglevel(struct net_device *dev) |
| 2773 | { |
Wang Chen | 8f15ea4 | 2008-11-12 23:38:36 -0800 | [diff] [blame] | 2774 | struct gem *gp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2775 | return gp->msg_enable; |
| 2776 | } |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 2777 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2778 | static void gem_set_msglevel(struct net_device *dev, u32 value) |
| 2779 | { |
Wang Chen | 8f15ea4 | 2008-11-12 23:38:36 -0800 | [diff] [blame] | 2780 | struct gem *gp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2781 | gp->msg_enable = value; |
| 2782 | } |
| 2783 | |
| 2784 | |
| 2785 | /* Add more when I understand how to program the chip */ |
| 2786 | /* like WAKE_UCAST | WAKE_MCAST | WAKE_BCAST */ |
| 2787 | |
| 2788 | #define WOL_SUPPORTED_MASK (WAKE_MAGIC) |
| 2789 | |
| 2790 | static void gem_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol) |
| 2791 | { |
Wang Chen | 8f15ea4 | 2008-11-12 23:38:36 -0800 | [diff] [blame] | 2792 | struct gem *gp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2793 | |
| 2794 | /* Add more when I understand how to program the chip */ |
| 2795 | if (gp->has_wol) { |
| 2796 | wol->supported = WOL_SUPPORTED_MASK; |
| 2797 | wol->wolopts = gp->wake_on_lan; |
| 2798 | } else { |
| 2799 | wol->supported = 0; |
| 2800 | wol->wolopts = 0; |
| 2801 | } |
| 2802 | } |
| 2803 | |
| 2804 | static int gem_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol) |
| 2805 | { |
Wang Chen | 8f15ea4 | 2008-11-12 23:38:36 -0800 | [diff] [blame] | 2806 | struct gem *gp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2807 | |
| 2808 | if (!gp->has_wol) |
| 2809 | return -EOPNOTSUPP; |
| 2810 | gp->wake_on_lan = wol->wolopts & WOL_SUPPORTED_MASK; |
| 2811 | return 0; |
| 2812 | } |
| 2813 | |
Jeff Garzik | 7282d49 | 2006-09-13 14:30:00 -0400 | [diff] [blame] | 2814 | static const struct ethtool_ops gem_ethtool_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2815 | .get_drvinfo = gem_get_drvinfo, |
| 2816 | .get_link = ethtool_op_get_link, |
| 2817 | .get_settings = gem_get_settings, |
| 2818 | .set_settings = gem_set_settings, |
| 2819 | .nway_reset = gem_nway_reset, |
| 2820 | .get_msglevel = gem_get_msglevel, |
| 2821 | .set_msglevel = gem_set_msglevel, |
| 2822 | .get_wol = gem_get_wol, |
| 2823 | .set_wol = gem_set_wol, |
| 2824 | }; |
| 2825 | |
| 2826 | static int gem_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
| 2827 | { |
Wang Chen | 8f15ea4 | 2008-11-12 23:38:36 -0800 | [diff] [blame] | 2828 | struct gem *gp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2829 | struct mii_ioctl_data *data = if_mii(ifr); |
| 2830 | int rc = -EOPNOTSUPP; |
| 2831 | unsigned long flags; |
| 2832 | |
Ingo Molnar | e3968fc | 2006-03-20 22:34:25 -0800 | [diff] [blame] | 2833 | /* Hold the PM mutex while doing ioctl's or we may collide |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2834 | * with power management. |
| 2835 | */ |
Ingo Molnar | e3968fc | 2006-03-20 22:34:25 -0800 | [diff] [blame] | 2836 | mutex_lock(&gp->pm_mutex); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 2837 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2838 | spin_lock_irqsave(&gp->lock, flags); |
| 2839 | gem_get_cell(gp); |
| 2840 | spin_unlock_irqrestore(&gp->lock, flags); |
| 2841 | |
| 2842 | switch (cmd) { |
| 2843 | case SIOCGMIIPHY: /* Get address of MII PHY in use. */ |
| 2844 | data->phy_id = gp->mii_phy_addr; |
| 2845 | /* Fallthrough... */ |
| 2846 | |
| 2847 | case SIOCGMIIREG: /* Read MII PHY register. */ |
| 2848 | if (!gp->running) |
| 2849 | rc = -EAGAIN; |
| 2850 | else { |
| 2851 | data->val_out = __phy_read(gp, data->phy_id & 0x1f, |
| 2852 | data->reg_num & 0x1f); |
| 2853 | rc = 0; |
| 2854 | } |
| 2855 | break; |
| 2856 | |
| 2857 | case SIOCSMIIREG: /* Write MII PHY register. */ |
Ben Hutchings | 7ab0f27 | 2009-09-03 10:39:43 +0000 | [diff] [blame] | 2858 | if (!gp->running) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2859 | rc = -EAGAIN; |
| 2860 | else { |
| 2861 | __phy_write(gp, data->phy_id & 0x1f, data->reg_num & 0x1f, |
| 2862 | data->val_in); |
| 2863 | rc = 0; |
| 2864 | } |
| 2865 | break; |
| 2866 | }; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 2867 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2868 | spin_lock_irqsave(&gp->lock, flags); |
| 2869 | gem_put_cell(gp); |
| 2870 | spin_unlock_irqrestore(&gp->lock, flags); |
| 2871 | |
Ingo Molnar | e3968fc | 2006-03-20 22:34:25 -0800 | [diff] [blame] | 2872 | mutex_unlock(&gp->pm_mutex); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 2873 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2874 | return rc; |
| 2875 | } |
| 2876 | |
David S. Miller | dadb830 | 2007-02-28 15:42:50 -0800 | [diff] [blame] | 2877 | #if (!defined(CONFIG_SPARC) && !defined(CONFIG_PPC_PMAC)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2878 | /* Fetch MAC address from vital product data of PCI ROM. */ |
Linus Torvalds | 4120b02 | 2005-09-11 09:26:20 -0700 | [diff] [blame] | 2879 | static int find_eth_addr_in_vpd(void __iomem *rom_base, int len, unsigned char *dev_addr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2880 | { |
| 2881 | int this_offset; |
| 2882 | |
| 2883 | for (this_offset = 0x20; this_offset < len; this_offset++) { |
| 2884 | void __iomem *p = rom_base + this_offset; |
| 2885 | int i; |
| 2886 | |
| 2887 | if (readb(p + 0) != 0x90 || |
| 2888 | readb(p + 1) != 0x00 || |
| 2889 | readb(p + 2) != 0x09 || |
| 2890 | readb(p + 3) != 0x4e || |
| 2891 | readb(p + 4) != 0x41 || |
| 2892 | readb(p + 5) != 0x06) |
| 2893 | continue; |
| 2894 | |
| 2895 | this_offset += 6; |
| 2896 | p += 6; |
| 2897 | |
| 2898 | for (i = 0; i < 6; i++) |
| 2899 | dev_addr[i] = readb(p + i); |
Linus Torvalds | 4120b02 | 2005-09-11 09:26:20 -0700 | [diff] [blame] | 2900 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2901 | } |
Linus Torvalds | 4120b02 | 2005-09-11 09:26:20 -0700 | [diff] [blame] | 2902 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2903 | } |
| 2904 | |
| 2905 | static void get_gem_mac_nonobp(struct pci_dev *pdev, unsigned char *dev_addr) |
| 2906 | { |
Linus Torvalds | 4120b02 | 2005-09-11 09:26:20 -0700 | [diff] [blame] | 2907 | size_t size; |
| 2908 | void __iomem *p = pci_map_rom(pdev, &size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2909 | |
Linus Torvalds | 4120b02 | 2005-09-11 09:26:20 -0700 | [diff] [blame] | 2910 | if (p) { |
| 2911 | int found; |
| 2912 | |
| 2913 | found = readb(p) == 0x55 && |
| 2914 | readb(p + 1) == 0xaa && |
| 2915 | find_eth_addr_in_vpd(p, (64 * 1024), dev_addr); |
| 2916 | pci_unmap_rom(pdev, p); |
| 2917 | if (found) |
| 2918 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2919 | } |
| 2920 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2921 | /* Sun MAC prefix then 3 random bytes. */ |
| 2922 | dev_addr[0] = 0x08; |
| 2923 | dev_addr[1] = 0x00; |
| 2924 | dev_addr[2] = 0x20; |
| 2925 | get_random_bytes(dev_addr + 3, 3); |
| 2926 | return; |
| 2927 | } |
| 2928 | #endif /* not Sparc and not PPC */ |
| 2929 | |
| 2930 | static int __devinit gem_get_device_address(struct gem *gp) |
| 2931 | { |
David S. Miller | dadb830 | 2007-02-28 15:42:50 -0800 | [diff] [blame] | 2932 | #if defined(CONFIG_SPARC) || defined(CONFIG_PPC_PMAC) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2933 | struct net_device *dev = gp->dev; |
Jeremy Kerr | 1a2509c | 2006-07-12 15:41:03 +1000 | [diff] [blame] | 2934 | const unsigned char *addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2935 | |
Stephen Rothwell | 40cd3a4 | 2007-05-01 13:54:02 +1000 | [diff] [blame] | 2936 | addr = of_get_property(gp->of_node, "local-mac-address", NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2937 | if (addr == NULL) { |
David S. Miller | 457e1a8 | 2007-03-29 01:36:44 -0700 | [diff] [blame] | 2938 | #ifdef CONFIG_SPARC |
| 2939 | addr = idprom->id_ethaddr; |
| 2940 | #else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2941 | printk("\n"); |
| 2942 | printk(KERN_ERR "%s: can't get mac-address\n", dev->name); |
| 2943 | return -1; |
David S. Miller | 457e1a8 | 2007-03-29 01:36:44 -0700 | [diff] [blame] | 2944 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2945 | } |
| 2946 | memcpy(dev->dev_addr, addr, 6); |
| 2947 | #else |
| 2948 | get_gem_mac_nonobp(gp->pdev, gp->dev->dev_addr); |
| 2949 | #endif |
| 2950 | return 0; |
| 2951 | } |
| 2952 | |
Adrian Bunk | 1490439 | 2005-12-21 18:50:12 -0800 | [diff] [blame] | 2953 | static void gem_remove_one(struct pci_dev *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2954 | { |
| 2955 | struct net_device *dev = pci_get_drvdata(pdev); |
| 2956 | |
| 2957 | if (dev) { |
Wang Chen | 8f15ea4 | 2008-11-12 23:38:36 -0800 | [diff] [blame] | 2958 | struct gem *gp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2959 | |
| 2960 | unregister_netdev(dev); |
| 2961 | |
| 2962 | /* Stop the link timer */ |
| 2963 | del_timer_sync(&gp->link_timer); |
| 2964 | |
| 2965 | /* We shouldn't need any locking here */ |
| 2966 | gem_get_cell(gp); |
| 2967 | |
| 2968 | /* Wait for a pending reset task to complete */ |
| 2969 | while (gp->reset_task_pending) |
| 2970 | yield(); |
| 2971 | flush_scheduled_work(); |
| 2972 | |
| 2973 | /* Shut the PHY down */ |
| 2974 | gem_stop_phy(gp, 0); |
| 2975 | |
| 2976 | gem_put_cell(gp); |
| 2977 | |
| 2978 | /* Make sure bus master is disabled */ |
| 2979 | pci_disable_device(gp->pdev); |
| 2980 | |
| 2981 | /* Free resources */ |
| 2982 | pci_free_consistent(pdev, |
| 2983 | sizeof(struct gem_init_block), |
| 2984 | gp->init_block, |
| 2985 | gp->gblock_dvma); |
| 2986 | iounmap(gp->regs); |
| 2987 | pci_release_regions(pdev); |
| 2988 | free_netdev(dev); |
| 2989 | |
| 2990 | pci_set_drvdata(pdev, NULL); |
| 2991 | } |
| 2992 | } |
| 2993 | |
Stephen Hemminger | d9a811d | 2009-01-07 17:28:54 -0800 | [diff] [blame] | 2994 | static const struct net_device_ops gem_netdev_ops = { |
| 2995 | .ndo_open = gem_open, |
| 2996 | .ndo_stop = gem_close, |
| 2997 | .ndo_start_xmit = gem_start_xmit, |
| 2998 | .ndo_get_stats = gem_get_stats, |
| 2999 | .ndo_set_multicast_list = gem_set_multicast, |
| 3000 | .ndo_do_ioctl = gem_ioctl, |
| 3001 | .ndo_tx_timeout = gem_tx_timeout, |
| 3002 | .ndo_change_mtu = gem_change_mtu, |
Stephen Hemminger | d9a811d | 2009-01-07 17:28:54 -0800 | [diff] [blame] | 3003 | .ndo_validate_addr = eth_validate_addr, |
Stephen Hemminger | 5ed0102 | 2009-03-19 23:58:01 -0700 | [diff] [blame] | 3004 | .ndo_set_mac_address = gem_set_mac_address, |
| 3005 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 3006 | .ndo_poll_controller = gem_poll_controller, |
| 3007 | #endif |
Stephen Hemminger | d9a811d | 2009-01-07 17:28:54 -0800 | [diff] [blame] | 3008 | }; |
| 3009 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3010 | static int __devinit gem_init_one(struct pci_dev *pdev, |
| 3011 | const struct pci_device_id *ent) |
| 3012 | { |
| 3013 | static int gem_version_printed = 0; |
| 3014 | unsigned long gemreg_base, gemreg_len; |
| 3015 | struct net_device *dev; |
| 3016 | struct gem *gp; |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 3017 | int err, pci_using_dac; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3018 | |
| 3019 | if (gem_version_printed++ == 0) |
| 3020 | printk(KERN_INFO "%s", version); |
| 3021 | |
| 3022 | /* Apple gmac note: during probe, the chip is powered up by |
| 3023 | * the arch code to allow the code below to work (and to let |
| 3024 | * the chip be probed on the config space. It won't stay powered |
| 3025 | * up until the interface is brought up however, so we can't rely |
| 3026 | * on register configuration done at this point. |
| 3027 | */ |
| 3028 | err = pci_enable_device(pdev); |
| 3029 | if (err) { |
| 3030 | printk(KERN_ERR PFX "Cannot enable MMIO operation, " |
| 3031 | "aborting.\n"); |
| 3032 | return err; |
| 3033 | } |
| 3034 | pci_set_master(pdev); |
| 3035 | |
| 3036 | /* Configure DMA attributes. */ |
| 3037 | |
| 3038 | /* All of the GEM documentation states that 64-bit DMA addressing |
| 3039 | * is fully supported and should work just fine. However the |
| 3040 | * front end for RIO based GEMs is different and only supports |
| 3041 | * 32-bit addressing. |
| 3042 | * |
| 3043 | * For now we assume the various PPC GEMs are 32-bit only as well. |
| 3044 | */ |
| 3045 | if (pdev->vendor == PCI_VENDOR_ID_SUN && |
| 3046 | pdev->device == PCI_DEVICE_ID_SUN_GEM && |
Yang Hongyang | 6a35528 | 2009-04-06 19:01:13 -0700 | [diff] [blame] | 3047 | !pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3048 | pci_using_dac = 1; |
| 3049 | } else { |
Yang Hongyang | 284901a | 2009-04-06 19:01:15 -0700 | [diff] [blame] | 3050 | err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3051 | if (err) { |
| 3052 | printk(KERN_ERR PFX "No usable DMA configuration, " |
| 3053 | "aborting.\n"); |
| 3054 | goto err_disable_device; |
| 3055 | } |
| 3056 | pci_using_dac = 0; |
| 3057 | } |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 3058 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3059 | gemreg_base = pci_resource_start(pdev, 0); |
| 3060 | gemreg_len = pci_resource_len(pdev, 0); |
| 3061 | |
| 3062 | if ((pci_resource_flags(pdev, 0) & IORESOURCE_IO) != 0) { |
| 3063 | printk(KERN_ERR PFX "Cannot find proper PCI device " |
| 3064 | "base address, aborting.\n"); |
| 3065 | err = -ENODEV; |
| 3066 | goto err_disable_device; |
| 3067 | } |
| 3068 | |
| 3069 | dev = alloc_etherdev(sizeof(*gp)); |
| 3070 | if (!dev) { |
| 3071 | printk(KERN_ERR PFX "Etherdev alloc failed, aborting.\n"); |
| 3072 | err = -ENOMEM; |
| 3073 | goto err_disable_device; |
| 3074 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3075 | SET_NETDEV_DEV(dev, &pdev->dev); |
| 3076 | |
Wang Chen | 8f15ea4 | 2008-11-12 23:38:36 -0800 | [diff] [blame] | 3077 | gp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3078 | |
| 3079 | err = pci_request_regions(pdev, DRV_NAME); |
| 3080 | if (err) { |
| 3081 | printk(KERN_ERR PFX "Cannot obtain PCI resources, " |
| 3082 | "aborting.\n"); |
| 3083 | goto err_out_free_netdev; |
| 3084 | } |
| 3085 | |
| 3086 | gp->pdev = pdev; |
| 3087 | dev->base_addr = (long) pdev; |
| 3088 | gp->dev = dev; |
| 3089 | |
| 3090 | gp->msg_enable = DEFAULT_MSG; |
| 3091 | |
| 3092 | spin_lock_init(&gp->lock); |
| 3093 | spin_lock_init(&gp->tx_lock); |
Ingo Molnar | e3968fc | 2006-03-20 22:34:25 -0800 | [diff] [blame] | 3094 | mutex_init(&gp->pm_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3095 | |
| 3096 | init_timer(&gp->link_timer); |
| 3097 | gp->link_timer.function = gem_link_timer; |
| 3098 | gp->link_timer.data = (unsigned long) gp; |
| 3099 | |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 3100 | INIT_WORK(&gp->reset_task, gem_reset_task); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 3101 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3102 | gp->lstate = link_down; |
| 3103 | gp->timer_ticks = 0; |
| 3104 | netif_carrier_off(dev); |
| 3105 | |
| 3106 | gp->regs = ioremap(gemreg_base, gemreg_len); |
Al Viro | 79ea13c | 2008-01-24 02:06:46 -0800 | [diff] [blame] | 3107 | if (!gp->regs) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3108 | printk(KERN_ERR PFX "Cannot map device registers, " |
| 3109 | "aborting.\n"); |
| 3110 | err = -EIO; |
| 3111 | goto err_out_free_res; |
| 3112 | } |
| 3113 | |
| 3114 | /* On Apple, we want a reference to the Open Firmware device-tree |
| 3115 | * node. We use it for clock control. |
| 3116 | */ |
David S. Miller | 457e1a8 | 2007-03-29 01:36:44 -0700 | [diff] [blame] | 3117 | #if defined(CONFIG_PPC_PMAC) || defined(CONFIG_SPARC) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3118 | gp->of_node = pci_device_to_OF_node(pdev); |
| 3119 | #endif |
| 3120 | |
| 3121 | /* Only Apple version supports WOL afaik */ |
| 3122 | if (pdev->vendor == PCI_VENDOR_ID_APPLE) |
| 3123 | gp->has_wol = 1; |
| 3124 | |
| 3125 | /* Make sure cell is enabled */ |
| 3126 | gem_get_cell(gp); |
| 3127 | |
| 3128 | /* Make sure everything is stopped and in init state */ |
| 3129 | gem_reset(gp); |
| 3130 | |
| 3131 | /* Fill up the mii_phy structure (even if we won't use it) */ |
| 3132 | gp->phy_mii.dev = dev; |
| 3133 | gp->phy_mii.mdio_read = _phy_read; |
| 3134 | gp->phy_mii.mdio_write = _phy_write; |
Benjamin Herrenschmidt | 3c326fe | 2005-07-07 17:56:09 -0700 | [diff] [blame] | 3135 | #ifdef CONFIG_PPC_PMAC |
| 3136 | gp->phy_mii.platform_data = gp->of_node; |
| 3137 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3138 | /* By default, we start with autoneg */ |
| 3139 | gp->want_autoneg = 1; |
| 3140 | |
| 3141 | /* Check fifo sizes, PHY type, etc... */ |
| 3142 | if (gem_check_invariants(gp)) { |
| 3143 | err = -ENODEV; |
| 3144 | goto err_out_iounmap; |
| 3145 | } |
| 3146 | |
| 3147 | /* It is guaranteed that the returned buffer will be at least |
| 3148 | * PAGE_SIZE aligned. |
| 3149 | */ |
| 3150 | gp->init_block = (struct gem_init_block *) |
| 3151 | pci_alloc_consistent(pdev, sizeof(struct gem_init_block), |
| 3152 | &gp->gblock_dvma); |
| 3153 | if (!gp->init_block) { |
| 3154 | printk(KERN_ERR PFX "Cannot allocate init block, " |
| 3155 | "aborting.\n"); |
| 3156 | err = -ENOMEM; |
| 3157 | goto err_out_iounmap; |
| 3158 | } |
| 3159 | |
| 3160 | if (gem_get_device_address(gp)) |
| 3161 | goto err_out_free_consistent; |
| 3162 | |
Stephen Hemminger | d9a811d | 2009-01-07 17:28:54 -0800 | [diff] [blame] | 3163 | dev->netdev_ops = &gem_netdev_ops; |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 3164 | netif_napi_add(dev, &gp->napi, gem_poll, 64); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3165 | dev->ethtool_ops = &gem_ethtool_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3166 | dev->watchdog_timeo = 5 * HZ; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3167 | dev->irq = pdev->irq; |
| 3168 | dev->dma = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3169 | |
| 3170 | /* Set that now, in case PM kicks in now */ |
| 3171 | pci_set_drvdata(pdev, dev); |
| 3172 | |
| 3173 | /* Detect & init PHY, start autoneg, we release the cell now |
| 3174 | * too, it will be managed by whoever needs it |
| 3175 | */ |
| 3176 | gem_init_phy(gp); |
| 3177 | |
| 3178 | spin_lock_irq(&gp->lock); |
| 3179 | gem_put_cell(gp); |
| 3180 | spin_unlock_irq(&gp->lock); |
| 3181 | |
| 3182 | /* Register with kernel */ |
| 3183 | if (register_netdev(dev)) { |
| 3184 | printk(KERN_ERR PFX "Cannot register net device, " |
| 3185 | "aborting.\n"); |
| 3186 | err = -ENOMEM; |
| 3187 | goto err_out_free_consistent; |
| 3188 | } |
| 3189 | |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 3190 | printk(KERN_INFO "%s: Sun GEM (PCI) 10/100/1000BaseT Ethernet %pM\n", |
| 3191 | dev->name, dev->dev_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3192 | |
| 3193 | if (gp->phy_type == phy_mii_mdio0 || |
| 3194 | gp->phy_type == phy_mii_mdio1) |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 3195 | printk(KERN_INFO "%s: Found %s PHY\n", dev->name, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3196 | gp->phy_mii.def ? gp->phy_mii.def->name : "no"); |
| 3197 | |
| 3198 | /* GEM can do it all... */ |
| 3199 | dev->features |= NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_LLTX; |
| 3200 | if (pci_using_dac) |
| 3201 | dev->features |= NETIF_F_HIGHDMA; |
| 3202 | |
| 3203 | return 0; |
| 3204 | |
| 3205 | err_out_free_consistent: |
| 3206 | gem_remove_one(pdev); |
| 3207 | err_out_iounmap: |
| 3208 | gem_put_cell(gp); |
| 3209 | iounmap(gp->regs); |
| 3210 | |
| 3211 | err_out_free_res: |
| 3212 | pci_release_regions(pdev); |
| 3213 | |
| 3214 | err_out_free_netdev: |
| 3215 | free_netdev(dev); |
| 3216 | err_disable_device: |
| 3217 | pci_disable_device(pdev); |
| 3218 | return err; |
| 3219 | |
| 3220 | } |
| 3221 | |
| 3222 | |
| 3223 | static struct pci_driver gem_driver = { |
| 3224 | .name = GEM_MODULE_NAME, |
| 3225 | .id_table = gem_pci_tbl, |
| 3226 | .probe = gem_init_one, |
Adrian Bunk | 1490439 | 2005-12-21 18:50:12 -0800 | [diff] [blame] | 3227 | .remove = gem_remove_one, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3228 | #ifdef CONFIG_PM |
| 3229 | .suspend = gem_suspend, |
| 3230 | .resume = gem_resume, |
| 3231 | #endif /* CONFIG_PM */ |
| 3232 | }; |
| 3233 | |
| 3234 | static int __init gem_init(void) |
| 3235 | { |
Jeff Garzik | 2991762 | 2006-08-19 17:48:59 -0400 | [diff] [blame] | 3236 | return pci_register_driver(&gem_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3237 | } |
| 3238 | |
| 3239 | static void __exit gem_cleanup(void) |
| 3240 | { |
| 3241 | pci_unregister_driver(&gem_driver); |
| 3242 | } |
| 3243 | |
| 3244 | module_init(gem_init); |
| 3245 | module_exit(gem_cleanup); |