| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Linus Torvalds (pre-git) | 10482 | 68.77% | 89 | 40.09% |
| David S. Miller | 2502 | 16.42% | 23 | 10.36% |
| Linus Torvalds | 661 | 4.34% | 12 | 5.41% |
| Sean Anderson | 542 | 3.56% | 11 | 4.95% |
| Meelis Roos | 94 | 0.62% | 1 | 0.45% |
| Al Viro | 84 | 0.55% | 4 | 1.80% |
| Philippe Reynes | 76 | 0.50% | 1 | 0.45% |
| Stephen Hemminger | 67 | 0.44% | 3 | 1.35% |
| Grant C. Likely | 62 | 0.41% | 6 | 2.70% |
| Nick Bowler | 57 | 0.37% | 1 | 0.45% |
| Mikulas Patocka | 50 | 0.33% | 1 | 0.45% |
| Rolf Eike Beer | 50 | 0.33% | 2 | 0.90% |
| Jakub Kiciński | 49 | 0.32% | 2 | 0.90% |
| Jiri Pirko | 41 | 0.27% | 4 | 1.80% |
| Tobias Klauser | 41 | 0.27% | 3 | 1.35% |
| Wang Chen | 36 | 0.24% | 1 | 0.45% |
| Willy Tarreau | 36 | 0.24% | 1 | 0.45% |
| Chris Poon | 31 | 0.20% | 1 | 0.45% |
| Michał Mirosław | 24 | 0.16% | 2 | 0.90% |
| Rick Jones | 22 | 0.14% | 1 | 0.45% |
| Kees Cook | 22 | 0.14% | 1 | 0.45% |
| François Romieu | 20 | 0.13% | 2 | 0.90% |
| Andrew Morton | 19 | 0.12% | 2 | 0.90% |
| Arnaldo Carvalho de Melo | 15 | 0.10% | 3 | 1.35% |
| Jurij Smakov | 14 | 0.09% | 1 | 0.45% |
| Rob Herring | 12 | 0.08% | 2 | 0.90% |
| Jeff Garzik | 10 | 0.07% | 3 | 1.35% |
| David Decotigny | 10 | 0.07% | 1 | 0.45% |
| Björn Helgaas | 9 | 0.06% | 1 | 0.45% |
| Jiri Slaby | 8 | 0.05% | 1 | 0.45% |
| Alexander Duyck | 8 | 0.05% | 1 | 0.45% |
| Tom 'spot' Callaway | 7 | 0.05% | 1 | 0.45% |
| Kjetil Oftedal | 6 | 0.04% | 1 | 0.45% |
| Milton D. Miller II | 6 | 0.04% | 1 | 0.45% |
| Benoit Taine | 6 | 0.04% | 1 | 0.45% |
| Dan Carpenter | 5 | 0.03% | 2 | 0.90% |
| Patrick McHardy | 5 | 0.03% | 3 | 1.35% |
| Michael S. Tsirkin | 4 | 0.03% | 1 | 0.45% |
| Jingoo Han | 4 | 0.03% | 3 | 1.35% |
| Jay Fenlason | 4 | 0.03% | 1 | 0.45% |
| Eric Dumazet | 4 | 0.03% | 1 | 0.45% |
| Madarasz Gergely | 4 | 0.03% | 1 | 0.45% |
| Auke-Jan H Kok | 3 | 0.02% | 1 | 0.45% |
| Jaroslav Kysela | 3 | 0.02% | 2 | 0.90% |
| James Morris | 3 | 0.02% | 1 | 0.45% |
| Stephen Rothwell | 3 | 0.02% | 1 | 0.45% |
| Pradeep A. Dalvi | 3 | 0.02% | 1 | 0.45% |
| Herbert Xu | 2 | 0.01% | 1 | 0.45% |
| Thomas Gleixner | 2 | 0.01% | 1 | 0.45% |
| John Levon | 2 | 0.01% | 1 | 0.45% |
| Wolfram Sang | 2 | 0.01% | 1 | 0.45% |
| Ian Campbell | 2 | 0.01% | 1 | 0.45% |
| Marcel van Nies | 1 | 0.01% | 1 | 0.45% |
| Libo Chen | 1 | 0.01% | 1 | 0.45% |
| Steven Cole | 1 | 0.01% | 1 | 0.45% |
| Wei Yang | 1 | 0.01% | 1 | 0.45% |
| Colin Ian King | 1 | 0.01% | 1 | 0.45% |
| Joe Perches | 1 | 0.01% | 1 | 0.45% |
| Adrian Bunk | 1 | 0.01% | 1 | 0.45% |
| Shannon Nelson | 1 | 0.01% | 1 | 0.45% |
| Total | 15242 | 222 |
// SPDX-License-Identifier: GPL-2.0 /* sunhme.c: Sparc HME/BigMac 10/100baseT half/full duplex auto switching, * auto carrier detecting ethernet driver. Also known as the * "Happy Meal Ethernet" found on SunSwift SBUS cards. * * Copyright (C) 1996, 1998, 1999, 2002, 2003, * 2006, 2008 David S. Miller (davem@davemloft.net) * * Changes : * 2000/11/11 Willy Tarreau <willy AT meta-x.org> * - port to non-sparc architectures. Tested only on x86 and * only currently works with QFE PCI cards. * - ability to specify the MAC address at module load time by passing this * argument : macaddr=0x00,0x10,0x20,0x30,0x40,0x50 */ #include <linux/module.h> #include <linux/kernel.h> #include <linux/types.h> #include <linux/fcntl.h> #include <linux/interrupt.h> #include <linux/ioport.h> #include <linux/in.h> #include <linux/slab.h> #include <linux/string.h> #include <linux/delay.h> #include <linux/init.h> #include <linux/ethtool.h> #include <linux/mii.h> #include <linux/crc32.h> #include <linux/random.h> #include <linux/errno.h> #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <linux/skbuff.h> #include <linux/mm.h> #include <linux/bitops.h> #include <linux/dma-mapping.h> #include <asm/io.h> #include <asm/dma.h> #include <asm/byteorder.h> #ifdef CONFIG_SPARC #include <linux/of.h> #include <linux/of_device.h> #include <asm/idprom.h> #include <asm/openprom.h> #include <asm/oplib.h> #include <asm/prom.h> #include <asm/auxio.h> #endif #include <linux/uaccess.h> #include <asm/irq.h> #ifdef CONFIG_PCI #include <linux/pci.h> #endif #include "sunhme.h" #define DRV_NAME "sunhme" MODULE_AUTHOR("David S. Miller (davem@davemloft.net)"); MODULE_DESCRIPTION("Sun HappyMealEthernet(HME) 10/100baseT ethernet driver"); MODULE_LICENSE("GPL"); static int macaddr[6]; /* accept MAC address of the form macaddr=0x08,0x00,0x20,0x30,0x40,0x50 */ module_param_array(macaddr, int, NULL, 0); MODULE_PARM_DESC(macaddr, "Happy Meal MAC address to set"); #ifdef CONFIG_SBUS static struct quattro *qfe_sbus_list; #endif #ifdef CONFIG_PCI static struct quattro *qfe_pci_list; #endif #define hme_debug(fmt, ...) pr_debug("%s: " fmt, __func__, ##__VA_ARGS__) #define HMD hme_debug /* "Auto Switch Debug" aka phy debug */ #if 1 #define ASD hme_debug #else #define ASD(...) #endif #if 0 struct hme_tx_logent { unsigned int tstamp; int tx_new, tx_old; unsigned int action; #define TXLOG_ACTION_IRQ 0x01 #define TXLOG_ACTION_TXMIT 0x02 #define TXLOG_ACTION_TBUSY 0x04 #define TXLOG_ACTION_NBUFS 0x08 unsigned int status; }; #define TX_LOG_LEN 128 static struct hme_tx_logent tx_log[TX_LOG_LEN]; static int txlog_cur_entry; static __inline__ void tx_add_log(struct happy_meal *hp, unsigned int a, unsigned int s) { struct hme_tx_logent *tlp; unsigned long flags; local_irq_save(flags); tlp = &tx_log[txlog_cur_entry]; tlp->tstamp = (unsigned int)jiffies; tlp->tx_new = hp->tx_new; tlp->tx_old = hp->tx_old; tlp->action = a; tlp->status = s; txlog_cur_entry = (txlog_cur_entry + 1) & (TX_LOG_LEN - 1); local_irq_restore(flags); } static __inline__ void tx_dump_log(void) { int i, this; this = txlog_cur_entry; for (i = 0; i < TX_LOG_LEN; i++) { pr_err("TXLOG[%d]: j[%08x] tx[N(%d)O(%d)] action[%08x] stat[%08x]\n", i, tx_log[this].tstamp, tx_log[this].tx_new, tx_log[this].tx_old, tx_log[this].action, tx_log[this].status); this = (this + 1) & (TX_LOG_LEN - 1); } } #else #define tx_add_log(hp, a, s) #define tx_dump_log() #endif #define DEFAULT_IPG0 16 /* For lance-mode only */ #define DEFAULT_IPG1 8 /* For all modes */ #define DEFAULT_IPG2 4 /* For all modes */ #define DEFAULT_JAMSIZE 4 /* Toe jam */ /* NOTE: In the descriptor writes one _must_ write the address * member _first_. The card must not be allowed to see * the updated descriptor flags until the address is * correct. I've added a write memory barrier between * the two stores so that I can sleep well at night... -DaveM */ #if defined(CONFIG_SBUS) && defined(CONFIG_PCI) static void sbus_hme_write32(void __iomem *reg, u32 val) { sbus_writel(val, reg); } static u32 sbus_hme_read32(void __iomem *reg) { return sbus_readl(reg); } static void sbus_hme_write_rxd(struct happy_meal_rxd *rxd, u32 flags, u32 addr) { rxd->rx_addr = (__force hme32)addr; dma_wmb(); rxd->rx_flags = (__force hme32)flags; } static void sbus_hme_write_txd(struct happy_meal_txd *txd, u32 flags, u32 addr) { txd->tx_addr = (__force hme32)addr; dma_wmb(); txd->tx_flags = (__force hme32)flags; } static u32 sbus_hme_read_desc32(hme32 *p) { return (__force u32)*p; } static void pci_hme_write32(void __iomem *reg, u32 val) { writel(val, reg); } static u32 pci_hme_read32(void __iomem *reg) { return readl(reg); } static void pci_hme_write_rxd(struct happy_meal_rxd *rxd, u32 flags, u32 addr) { rxd->rx_addr = (__force hme32)cpu_to_le32(addr); dma_wmb(); rxd->rx_flags = (__force hme32)cpu_to_le32(flags); } static void pci_hme_write_txd(struct happy_meal_txd *txd, u32 flags, u32 addr) { txd->tx_addr = (__force hme32)cpu_to_le32(addr); dma_wmb(); txd->tx_flags = (__force hme32)cpu_to_le32(flags); } static u32 pci_hme_read_desc32(hme32 *p) { return le32_to_cpup((__le32 *)p); } #define hme_write32(__hp, __reg, __val) \ ((__hp)->write32((__reg), (__val))) #define hme_read32(__hp, __reg) \ ((__hp)->read32(__reg)) #define hme_write_rxd(__hp, __rxd, __flags, __addr) \ ((__hp)->write_rxd((__rxd), (__flags), (__addr))) #define hme_write_txd(__hp, __txd, __flags, __addr) \ ((__hp)->write_txd((__txd), (__flags), (__addr))) #define hme_read_desc32(__hp, __p) \ ((__hp)->read_desc32(__p)) #else #ifdef CONFIG_SBUS /* SBUS only compilation */ #define hme_write32(__hp, __reg, __val) \ sbus_writel((__val), (__reg)) #define hme_read32(__hp, __reg) \ sbus_readl(__reg) #define hme_write_rxd(__hp, __rxd, __flags, __addr) \ do { (__rxd)->rx_addr = (__force hme32)(u32)(__addr); \ dma_wmb(); \ (__rxd)->rx_flags = (__force hme32)(u32)(__flags); \ } while(0) #define hme_write_txd(__hp, __txd, __flags, __addr) \ do { (__txd)->tx_addr = (__force hme32)(u32)(__addr); \ dma_wmb(); \ (__txd)->tx_flags = (__force hme32)(u32)(__flags); \ } while(0) #define hme_read_desc32(__hp, __p) ((__force u32)(hme32)*(__p)) #else /* PCI only compilation */ #define hme_write32(__hp, __reg, __val) \ writel((__val), (__reg)) #define hme_read32(__hp, __reg) \ readl(__reg) #define hme_write_rxd(__hp, __rxd, __flags, __addr) \ do { (__rxd)->rx_addr = (__force hme32)cpu_to_le32(__addr); \ dma_wmb(); \ (__rxd)->rx_flags = (__force hme32)cpu_to_le32(__flags); \ } while(0) #define hme_write_txd(__hp, __txd, __flags, __addr) \ do { (__txd)->tx_addr = (__force hme32)cpu_to_le32(__addr); \ dma_wmb(); \ (__txd)->tx_flags = (__force hme32)cpu_to_le32(__flags); \ } while(0) static inline u32 hme_read_desc32(struct happy_meal *hp, hme32 *p) { return le32_to_cpup((__le32 *)p); } #endif #endif /* Oh yes, the MIF BitBang is mighty fun to program. BitBucket is more like it. */ static void BB_PUT_BIT(struct happy_meal *hp, void __iomem *tregs, int bit) { hme_write32(hp, tregs + TCVR_BBDATA, bit); hme_write32(hp, tregs + TCVR_BBCLOCK, 0); hme_write32(hp, tregs + TCVR_BBCLOCK, 1); } #if 0 static u32 BB_GET_BIT(struct happy_meal *hp, void __iomem *tregs, int internal) { u32 ret; hme_write32(hp, tregs + TCVR_BBCLOCK, 0); hme_write32(hp, tregs + TCVR_BBCLOCK, 1); ret = hme_read32(hp, tregs + TCVR_CFG); if (internal) ret &= TCV_CFG_MDIO0; else ret &= TCV_CFG_MDIO1; return ret; } #endif static u32 BB_GET_BIT2(struct happy_meal *hp, void __iomem *tregs, int internal) { u32 retval; hme_write32(hp, tregs + TCVR_BBCLOCK, 0); udelay(1); retval = hme_read32(hp, tregs + TCVR_CFG); if (internal) retval &= TCV_CFG_MDIO0; else retval &= TCV_CFG_MDIO1; hme_write32(hp, tregs + TCVR_BBCLOCK, 1); return retval; } #define TCVR_FAILURE 0x80000000 /* Impossible MIF read value */ static int happy_meal_bb_read(struct happy_meal *hp, void __iomem *tregs, int reg) { u32 tmp; int retval = 0; int i; /* Enable the MIF BitBang outputs. */ hme_write32(hp, tregs + TCVR_BBOENAB, 1); /* Force BitBang into the idle state. */ for (i = 0; i < 32; i++) BB_PUT_BIT(hp, tregs, 1); /* Give it the read sequence. */ BB_PUT_BIT(hp, tregs, 0); BB_PUT_BIT(hp, tregs, 1); BB_PUT_BIT(hp, tregs, 1); BB_PUT_BIT(hp, tregs, 0); /* Give it the PHY address. */ tmp = hp->paddr & 0xff; for (i = 4; i >= 0; i--) BB_PUT_BIT(hp, tregs, ((tmp >> i) & 1)); /* Tell it what register we want to read. */ tmp = (reg & 0xff); for (i = 4; i >= 0; i--) BB_PUT_BIT(hp, tregs, ((tmp >> i) & 1)); /* Close down the MIF BitBang outputs. */ hme_write32(hp, tregs + TCVR_BBOENAB, 0); /* Now read in the value. */ (void) BB_GET_BIT2(hp, tregs, (hp->tcvr_type == internal)); for (i = 15; i >= 0; i--) retval |= BB_GET_BIT2(hp, tregs, (hp->tcvr_type == internal)); (void) BB_GET_BIT2(hp, tregs, (hp->tcvr_type == internal)); (void) BB_GET_BIT2(hp, tregs, (hp->tcvr_type == internal)); (void) BB_GET_BIT2(hp, tregs, (hp->tcvr_type == internal)); ASD("reg=%d value=%x\n", reg, retval); return retval; } static void happy_meal_bb_write(struct happy_meal *hp, void __iomem *tregs, int reg, unsigned short value) { u32 tmp; int i; ASD("reg=%d value=%x\n", reg, value); /* Enable the MIF BitBang outputs. */ hme_write32(hp, tregs + TCVR_BBOENAB, 1); /* Force BitBang into the idle state. */ for (i = 0; i < 32; i++) BB_PUT_BIT(hp, tregs, 1); /* Give it write sequence. */ BB_PUT_BIT(hp, tregs, 0); BB_PUT_BIT(hp, tregs, 1); BB_PUT_BIT(hp, tregs, 0); BB_PUT_BIT(hp, tregs, 1); /* Give it the PHY address. */ tmp = (hp->paddr & 0xff); for (i = 4; i >= 0; i--) BB_PUT_BIT(hp, tregs, ((tmp >> i) & 1)); /* Tell it what register we will be writing. */ tmp = (reg & 0xff); for (i = 4; i >= 0; i--) BB_PUT_BIT(hp, tregs, ((tmp >> i) & 1)); /* Tell it to become ready for the bits. */ BB_PUT_BIT(hp, tregs, 1); BB_PUT_BIT(hp, tregs, 0); for (i = 15; i >= 0; i--) BB_PUT_BIT(hp, tregs, ((value >> i) & 1)); /* Close down the MIF BitBang outputs. */ hme_write32(hp, tregs + TCVR_BBOENAB, 0); } #define TCVR_READ_TRIES 16 static int happy_meal_tcvr_read(struct happy_meal *hp, void __iomem *tregs, int reg) { int tries = TCVR_READ_TRIES; int retval; if (hp->tcvr_type == none) { ASD("no transceiver, value=TCVR_FAILURE\n"); return TCVR_FAILURE; } if (!(hp->happy_flags & HFLAG_FENABLE)) { ASD("doing bit bang\n"); return happy_meal_bb_read(hp, tregs, reg); } hme_write32(hp, tregs + TCVR_FRAME, (FRAME_READ | (hp->paddr << 23) | ((reg & 0xff) << 18))); while (!(hme_read32(hp, tregs + TCVR_FRAME) & 0x10000) && --tries) udelay(20); if (!tries) { netdev_err(hp->dev, "Aieee, transceiver MIF read bolixed\n"); return TCVR_FAILURE; } retval = hme_read32(hp, tregs + TCVR_FRAME) & 0xffff; ASD("reg=0x%02x value=%04x\n", reg, retval); return retval; } #define TCVR_WRITE_TRIES 16 static void happy_meal_tcvr_write(struct happy_meal *hp, void __iomem *tregs, int reg, unsigned short value) { int tries = TCVR_WRITE_TRIES; ASD("reg=0x%02x value=%04x\n", reg, value); /* Welcome to Sun Microsystems, can I take your order please? */ if (!(hp->happy_flags & HFLAG_FENABLE)) { happy_meal_bb_write(hp, tregs, reg, value); return; } /* Would you like fries with that? */ hme_write32(hp, tregs + TCVR_FRAME, (FRAME_WRITE | (hp->paddr << 23) | ((reg & 0xff) << 18) | (value & 0xffff))); while (!(hme_read32(hp, tregs + TCVR_FRAME) & 0x10000) && --tries) udelay(20); /* Anything else? */ if (!tries) netdev_err(hp->dev, "Aieee, transceiver MIF write bolixed\n"); /* Fifty-two cents is your change, have a nice day. */ } /* Auto negotiation. The scheme is very simple. We have a timer routine * that keeps watching the auto negotiation process as it progresses. * The DP83840 is first told to start doing it's thing, we set up the time * and place the timer state machine in it's initial state. * * Here the timer peeks at the DP83840 status registers at each click to see * if the auto negotiation has completed, we assume here that the DP83840 PHY * will time out at some point and just tell us what (didn't) happen. For * complete coverage we only allow so many of the ticks at this level to run, * when this has expired we print a warning message and try another strategy. * This "other" strategy is to force the interface into various speed/duplex * configurations and we stop when we see a link-up condition before the * maximum number of "peek" ticks have occurred. * * Once a valid link status has been detected we configure the BigMAC and * the rest of the Happy Meal to speak the most efficient protocol we could * get a clean link for. The priority for link configurations, highest first * is: * 100 Base-T Full Duplex * 100 Base-T Half Duplex * 10 Base-T Full Duplex * 10 Base-T Half Duplex * * We start a new timer now, after a successful auto negotiation status has * been detected. This timer just waits for the link-up bit to get set in * the BMCR of the DP83840. When this occurs we print a kernel log message * describing the link type in use and the fact that it is up. * * If a fatal error of some sort is signalled and detected in the interrupt * service routine, and the chip is reset, or the link is ifconfig'd down * and then back up, this entire process repeats itself all over again. */ static int try_next_permutation(struct happy_meal *hp, void __iomem *tregs) { hp->sw_bmcr = happy_meal_tcvr_read(hp, tregs, MII_BMCR); /* Downgrade from full to half duplex. Only possible * via ethtool. */ if (hp->sw_bmcr & BMCR_FULLDPLX) { hp->sw_bmcr &= ~(BMCR_FULLDPLX); happy_meal_tcvr_write(hp, tregs, MII_BMCR, hp->sw_bmcr); return 0; } /* Downgrade from 100 to 10. */ if (hp->sw_bmcr & BMCR_SPEED100) { hp->sw_bmcr &= ~(BMCR_SPEED100); happy_meal_tcvr_write(hp, tregs, MII_BMCR, hp->sw_bmcr); return 0; } /* We've tried everything. */ return -1; } static void display_link_mode(struct happy_meal *hp, void __iomem *tregs) { hp->sw_lpa = happy_meal_tcvr_read(hp, tregs, MII_LPA); netdev_info(hp->dev, "Link is up using %s transceiver at %dMb/s, %s Duplex.\n", hp->tcvr_type == external ? "external" : "internal", hp->sw_lpa & (LPA_100HALF | LPA_100FULL) ? 100 : 10, hp->sw_lpa & (LPA_100FULL | LPA_10FULL) ? "Full" : "Half"); } static void display_forced_link_mode(struct happy_meal *hp, void __iomem *tregs) { hp->sw_bmcr = happy_meal_tcvr_read(hp, tregs, MII_BMCR); netdev_info(hp->dev, "Link has been forced up using %s transceiver at %dMb/s, %s Duplex.\n", hp->tcvr_type == external ? "external" : "internal", hp->sw_bmcr & BMCR_SPEED100 ? 100 : 10, hp->sw_bmcr & BMCR_FULLDPLX ? "Full" : "Half"); } static int set_happy_link_modes(struct happy_meal *hp, void __iomem *tregs) { int full; /* All we care about is making sure the bigmac tx_cfg has a * proper duplex setting. */ if (hp->timer_state == arbwait) { hp->sw_lpa = happy_meal_tcvr_read(hp, tregs, MII_LPA); if (!(hp->sw_lpa & (LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL))) goto no_response; if (hp->sw_lpa & LPA_100FULL) full = 1; else if (hp->sw_lpa & LPA_100HALF) full = 0; else if (hp->sw_lpa & LPA_10FULL) full = 1; else full = 0; } else { /* Forcing a link mode. */ hp->sw_bmcr = happy_meal_tcvr_read(hp, tregs, MII_BMCR); if (hp->sw_bmcr & BMCR_FULLDPLX) full = 1; else full = 0; } /* Before changing other bits in the tx_cfg register, and in * general any of other the TX config registers too, you * must: * 1) Clear Enable * 2) Poll with reads until that bit reads back as zero * 3) Make TX configuration changes * 4) Set Enable once more */ hme_write32(hp, hp->bigmacregs + BMAC_TXCFG, hme_read32(hp, hp->bigmacregs + BMAC_TXCFG) & ~(BIGMAC_TXCFG_ENABLE)); while (hme_read32(hp, hp->bigmacregs + BMAC_TXCFG) & BIGMAC_TXCFG_ENABLE) barrier(); if (full) { hp->happy_flags |= HFLAG_FULL; hme_write32(hp, hp->bigmacregs + BMAC_TXCFG, hme_read32(hp, hp->bigmacregs + BMAC_TXCFG) | BIGMAC_TXCFG_FULLDPLX); } else { hp->happy_flags &= ~(HFLAG_FULL); hme_write32(hp, hp->bigmacregs + BMAC_TXCFG, hme_read32(hp, hp->bigmacregs + BMAC_TXCFG) & ~(BIGMAC_TXCFG_FULLDPLX)); } hme_write32(hp, hp->bigmacregs + BMAC_TXCFG, hme_read32(hp, hp->bigmacregs + BMAC_TXCFG) | BIGMAC_TXCFG_ENABLE); return 0; no_response: return 1; } static int happy_meal_init(struct happy_meal *hp); static int is_lucent_phy(struct happy_meal *hp) { void __iomem *tregs = hp->tcvregs; unsigned short mr2, mr3; int ret = 0; mr2 = happy_meal_tcvr_read(hp, tregs, 2); mr3 = happy_meal_tcvr_read(hp, tregs, 3); if ((mr2 & 0xffff) == 0x0180 && ((mr3 & 0xffff) >> 10) == 0x1d) ret = 1; return ret; } static void happy_meal_timer(struct timer_list *t) { struct happy_meal *hp = from_timer(hp, t, happy_timer); void __iomem *tregs = hp->tcvregs; int restart_timer = 0; spin_lock_irq(&hp->happy_lock); hp->timer_ticks++; switch(hp->timer_state) { case arbwait: /* Only allow for 5 ticks, thats 10 seconds and much too * long to wait for arbitration to complete. */ if (hp->timer_ticks >= 10) { /* Enter force mode. */ do_force_mode: hp->sw_bmcr = happy_meal_tcvr_read(hp, tregs, MII_BMCR); netdev_notice(hp->dev, "Auto-Negotiation unsuccessful, trying force link mode\n"); hp->sw_bmcr = BMCR_SPEED100; happy_meal_tcvr_write(hp, tregs, MII_BMCR, hp->sw_bmcr); if (!is_lucent_phy(hp)) { /* OK, seems we need do disable the transceiver for the first * tick to make sure we get an accurate link state at the * second tick. */ hp->sw_csconfig = happy_meal_tcvr_read(hp, tregs, DP83840_CSCONFIG); hp->sw_csconfig &= ~(CSCONFIG_TCVDISAB); happy_meal_tcvr_write(hp, tregs, DP83840_CSCONFIG, hp->sw_csconfig); } hp->timer_state = ltrywait; hp->timer_ticks = 0; restart_timer = 1; } else { /* Anything interesting happen? */ hp->sw_bmsr = happy_meal_tcvr_read(hp, tregs, MII_BMSR); if (hp->sw_bmsr & BMSR_ANEGCOMPLETE) { int ret; /* Just what we've been waiting for... */ ret = set_happy_link_modes(hp, tregs); if (ret) { /* Ooops, something bad happened, go to force * mode. * * XXX Broken hubs which don't support 802.3u * XXX auto-negotiation make this happen as well. */ goto do_force_mode; } /* Success, at least so far, advance our state engine. */ hp->timer_state = lupwait; restart_timer = 1; } else { restart_timer = 1; } } break; case lupwait: /* Auto negotiation was successful and we are awaiting a * link up status. I have decided to let this timer run * forever until some sort of error is signalled, reporting * a message to the user at 10 second intervals. */ hp->sw_bmsr = happy_meal_tcvr_read(hp, tregs, MII_BMSR); if (hp->sw_bmsr & BMSR_LSTATUS) { /* Wheee, it's up, display the link mode in use and put * the timer to sleep. */ display_link_mode(hp, tregs); hp->timer_state = asleep; restart_timer = 0; } else { if (hp->timer_ticks >= 10) { netdev_notice(hp->dev, "Auto negotiation successful, link still not completely up.\n"); hp->timer_ticks = 0; restart_timer = 1; } else { restart_timer = 1; } } break; case ltrywait: /* Making the timeout here too long can make it take * annoyingly long to attempt all of the link mode * permutations, but then again this is essentially * error recovery code for the most part. */ hp->sw_bmsr = happy_meal_tcvr_read(hp, tregs, MII_BMSR); hp->sw_csconfig = happy_meal_tcvr_read(hp, tregs, DP83840_CSCONFIG); if (hp->timer_ticks == 1) { if (!is_lucent_phy(hp)) { /* Re-enable transceiver, we'll re-enable the transceiver next * tick, then check link state on the following tick. */ hp->sw_csconfig |= CSCONFIG_TCVDISAB; happy_meal_tcvr_write(hp, tregs, DP83840_CSCONFIG, hp->sw_csconfig); } restart_timer = 1; break; } if (hp->timer_ticks == 2) { if (!is_lucent_phy(hp)) { hp->sw_csconfig &= ~(CSCONFIG_TCVDISAB); happy_meal_tcvr_write(hp, tregs, DP83840_CSCONFIG, hp->sw_csconfig); } restart_timer = 1; break; } if (hp->sw_bmsr & BMSR_LSTATUS) { /* Force mode selection success. */ display_forced_link_mode(hp, tregs); set_happy_link_modes(hp, tregs); /* XXX error? then what? */ hp->timer_state = asleep; restart_timer = 0; } else { if (hp->timer_ticks >= 4) { /* 6 seconds or so... */ int ret; ret = try_next_permutation(hp, tregs); if (ret == -1) { /* Aieee, tried them all, reset the * chip and try all over again. */ /* Let the user know... */ netdev_notice(hp->dev, "Link down, cable problem?\n"); ret = happy_meal_init(hp); if (ret) { /* ho hum... */ netdev_err(hp->dev, "Error, cannot re-init the Happy Meal.\n"); } goto out; } if (!is_lucent_phy(hp)) { hp->sw_csconfig = happy_meal_tcvr_read(hp, tregs, DP83840_CSCONFIG); hp->sw_csconfig |= CSCONFIG_TCVDISAB; happy_meal_tcvr_write(hp, tregs, DP83840_CSCONFIG, hp->sw_csconfig); } hp->timer_ticks = 0; restart_timer = 1; } else { restart_timer = 1; } } break; case asleep: default: /* Can't happens.... */ netdev_err(hp->dev, "Aieee, link timer is asleep but we got one anyways!\n"); restart_timer = 0; hp->timer_ticks = 0; hp->timer_state = asleep; /* foo on you */ break; } if (restart_timer) { hp->happy_timer.expires = jiffies + ((12 * HZ)/10); /* 1.2 sec. */ add_timer(&hp->happy_timer); } out: spin_unlock_irq(&hp->happy_lock); } #define TX_RESET_TRIES 32 #define RX_RESET_TRIES 32 /* hp->happy_lock must be held */ static void happy_meal_tx_reset(struct happy_meal *hp, void __iomem *bregs) { int tries = TX_RESET_TRIES; HMD("reset...\n"); /* Would you like to try our SMCC Delux? */ hme_write32(hp, bregs + BMAC_TXSWRESET, 0); while ((hme_read32(hp, bregs + BMAC_TXSWRESET) & 1) && --tries) udelay(20); /* Lettuce, tomato, buggy hardware (no extra charge)? */ if (!tries) netdev_err(hp->dev, "Transceiver BigMac ATTACK!"); /* Take care. */ HMD("done\n"); } /* hp->happy_lock must be held */ static void happy_meal_rx_reset(struct happy_meal *hp, void __iomem *bregs) { int tries = RX_RESET_TRIES; HMD("reset...\n"); /* We have a special on GNU/Viking hardware bugs today. */ hme_write32(hp, bregs + BMAC_RXSWRESET, 0); while ((hme_read32(hp, bregs + BMAC_RXSWRESET) & 1) && --tries) udelay(20); /* Will that be all? */ if (!tries) netdev_err(hp->dev, "Receiver BigMac ATTACK!\n"); /* Don't forget your vik_1137125_wa. Have a nice day. */ HMD("done\n"); } #define STOP_TRIES 16 /* hp->happy_lock must be held */ static void happy_meal_stop(struct happy_meal *hp, void __iomem *gregs) { int tries = STOP_TRIES; HMD("reset...\n"); /* We're consolidating our STB products, it's your lucky day. */ hme_write32(hp, gregs + GREG_SWRESET, GREG_RESET_ALL); while (hme_read32(hp, gregs + GREG_SWRESET) && --tries) udelay(20); /* Come back next week when we are "Sun Microelectronics". */ if (!tries) netdev_err(hp->dev, "Fry guys.\n"); /* Remember: "Different name, same old buggy as shit hardware." */ HMD("done\n"); } /* hp->happy_lock must be held */ static void happy_meal_get_counters(struct happy_meal *hp, void __iomem *bregs) { struct net_device_stats *stats = &hp->dev->stats; stats->rx_crc_errors += hme_read32(hp, bregs + BMAC_RCRCECTR); hme_write32(hp, bregs + BMAC_RCRCECTR, 0); stats->rx_frame_errors += hme_read32(hp, bregs + BMAC_UNALECTR); hme_write32(hp, bregs + BMAC_UNALECTR, 0); stats->rx_length_errors += hme_read32(hp, bregs + BMAC_GLECTR); hme_write32(hp, bregs + BMAC_GLECTR, 0); stats->tx_aborted_errors += hme_read32(hp, bregs + BMAC_EXCTR); stats->collisions += (hme_read32(hp, bregs + BMAC_EXCTR) + hme_read32(hp, bregs + BMAC_LTCTR)); hme_write32(hp, bregs + BMAC_EXCTR, 0); hme_write32(hp, bregs + BMAC_LTCTR, 0); } /* hp->happy_lock must be held */ static void happy_meal_poll_stop(struct happy_meal *hp, void __iomem *tregs) { /* If polling disabled or not polling already, nothing to do. */ if ((hp->happy_flags & (HFLAG_POLLENABLE | HFLAG_POLL)) != (HFLAG_POLLENABLE | HFLAG_POLL)) { ASD("not polling, return\n"); return; } /* Shut up the MIF. */ ASD("were polling, mif ints off, polling off\n"); hme_write32(hp, tregs + TCVR_IMASK, 0xffff); /* Turn off polling. */ hme_write32(hp, tregs + TCVR_CFG, hme_read32(hp, tregs + TCVR_CFG) & ~(TCV_CFG_PENABLE)); /* We are no longer polling. */ hp->happy_flags &= ~(HFLAG_POLL); /* Let the bits set. */ udelay(200); ASD("done\n"); } /* Only Sun can take such nice parts and fuck up the programming interface * like this. Good job guys... */ #define TCVR_RESET_TRIES 16 /* It should reset quickly */ #define TCVR_UNISOLATE_TRIES 32 /* Dis-isolation can take longer. */ /* hp->happy_lock must be held */ static int happy_meal_tcvr_reset(struct happy_meal *hp, void __iomem *tregs) { u32 tconfig; int result, tries = TCVR_RESET_TRIES; tconfig = hme_read32(hp, tregs + TCVR_CFG); ASD("tcfg=%08x\n", tconfig); if (hp->tcvr_type == external) { hme_write32(hp, tregs + TCVR_CFG, tconfig & ~(TCV_CFG_PSELECT)); hp->tcvr_type = internal; hp->paddr = TCV_PADDR_ITX; happy_meal_tcvr_write(hp, tregs, MII_BMCR, (BMCR_LOOPBACK|BMCR_PDOWN|BMCR_ISOLATE)); result = happy_meal_tcvr_read(hp, tregs, MII_BMCR); if (result == TCVR_FAILURE) { ASD("phyread_fail\n"); return -1; } ASD("external: ISOLATE, phyread_ok, PSELECT\n"); hme_write32(hp, tregs + TCVR_CFG, tconfig | TCV_CFG_PSELECT); hp->tcvr_type = external; hp->paddr = TCV_PADDR_ETX; } else { if (tconfig & TCV_CFG_MDIO1) { hme_write32(hp, tregs + TCVR_CFG, (tconfig | TCV_CFG_PSELECT)); happy_meal_tcvr_write(hp, tregs, MII_BMCR, (BMCR_LOOPBACK|BMCR_PDOWN|BMCR_ISOLATE)); result = happy_meal_tcvr_read(hp, tregs, MII_BMCR); if (result == TCVR_FAILURE) { ASD("phyread_fail>\n"); return -1; } ASD("internal: PSELECT, ISOLATE, phyread_ok, ~PSELECT\n"); hme_write32(hp, tregs + TCVR_CFG, (tconfig & ~(TCV_CFG_PSELECT))); hp->tcvr_type = internal; hp->paddr = TCV_PADDR_ITX; } } ASD("BMCR_RESET...\n"); happy_meal_tcvr_write(hp, tregs, MII_BMCR, BMCR_RESET); while (--tries) { result = happy_meal_tcvr_read(hp, tregs, MII_BMCR); if (result == TCVR_FAILURE) return -1; hp->sw_bmcr = result; if (!(result & BMCR_RESET)) break; udelay(20); } if (!tries) { ASD("BMCR RESET FAILED!\n"); return -1; } ASD("RESET_OK\n"); /* Get fresh copies of the PHY registers. */ hp->sw_bmsr = happy_meal_tcvr_read(hp, tregs, MII_BMSR); hp->sw_physid1 = happy_meal_tcvr_read(hp, tregs, MII_PHYSID1); hp->sw_physid2 = happy_meal_tcvr_read(hp, tregs, MII_PHYSID2); hp->sw_advertise = happy_meal_tcvr_read(hp, tregs, MII_ADVERTISE); ASD("UNISOLATE...\n"); hp->sw_bmcr &= ~(BMCR_ISOLATE); happy_meal_tcvr_write(hp, tregs, MII_BMCR, hp->sw_bmcr); tries = TCVR_UNISOLATE_TRIES; while (--tries) { result = happy_meal_tcvr_read(hp, tregs, MII_BMCR); if (result == TCVR_FAILURE) return -1; if (!(result & BMCR_ISOLATE)) break; udelay(20); } if (!tries) { ASD("UNISOLATE FAILED!\n"); return -1; } ASD("SUCCESS and CSCONFIG_DFBYPASS\n"); if (!is_lucent_phy(hp)) { result = happy_meal_tcvr_read(hp, tregs, DP83840_CSCONFIG); happy_meal_tcvr_write(hp, tregs, DP83840_CSCONFIG, (result | CSCONFIG_DFBYPASS)); } return 0; } /* Figure out whether we have an internal or external transceiver. * * hp->happy_lock must be held */ static void happy_meal_transceiver_check(struct happy_meal *hp, void __iomem *tregs) { unsigned long tconfig = hme_read32(hp, tregs + TCVR_CFG); ASD("tcfg=%08lx\n", tconfig); if (hp->happy_flags & HFLAG_POLL) { /* If we are polling, we must stop to get the transceiver type. */ if (hp->tcvr_type == internal) { if (tconfig & TCV_CFG_MDIO1) { happy_meal_poll_stop(hp, tregs); hp->paddr = TCV_PADDR_ETX; hp->tcvr_type = external; tconfig &= ~(TCV_CFG_PENABLE); tconfig |= TCV_CFG_PSELECT; hme_write32(hp, tregs + TCVR_CFG, tconfig); ASD("poll stop, internal->external\n"); } } else { if (hp->tcvr_type == external) { if (!(hme_read32(hp, tregs + TCVR_STATUS) >> 16)) { happy_meal_poll_stop(hp, tregs); hp->paddr = TCV_PADDR_ITX; hp->tcvr_type = internal; hme_write32(hp, tregs + TCVR_CFG, hme_read32(hp, tregs + TCVR_CFG) & ~(TCV_CFG_PSELECT)); ASD("poll stop, external->internal\n"); } } else { ASD("polling, none\n"); } } } else { u32 reread = hme_read32(hp, tregs + TCVR_CFG); /* Else we can just work off of the MDIO bits. */ if (reread & TCV_CFG_MDIO1) { hme_write32(hp, tregs + TCVR_CFG, tconfig | TCV_CFG_PSELECT); hp->paddr = TCV_PADDR_ETX; hp->tcvr_type = external; ASD("not polling, external\n"); } else { if (reread & TCV_CFG_MDIO0) { hme_write32(hp, tregs + TCVR_CFG, tconfig & ~(TCV_CFG_PSELECT)); hp->paddr = TCV_PADDR_ITX; hp->tcvr_type = internal; ASD("not polling, internal\n"); } else { netdev_err(hp->dev, "Transceiver and a coke please."); hp->tcvr_type = none; /* Grrr... */ ASD("not polling, none\n"); } } } } /* The receive ring buffers are a bit tricky to get right. Here goes... * * The buffers we dma into must be 64 byte aligned. So we use a special * alloc_skb() routine for the happy meal to allocate 64 bytes more than * we really need. * * We use skb_reserve() to align the data block we get in the skb. We * also program the etxregs->cfg register to use an offset of 2. This * imperical constant plus the ethernet header size will always leave * us with a nicely aligned ip header once we pass things up to the * protocol layers. * * The numbers work out to: * * Max ethernet frame size 1518 * Ethernet header size 14 * Happy Meal base offset 2 * * Say a skb data area is at 0xf001b010, and its size alloced is * (ETH_FRAME_LEN + 64 + 2) = (1514 + 64 + 2) = 1580 bytes. * * First our alloc_skb() routine aligns the data base to a 64 byte * boundary. We now have 0xf001b040 as our skb data address. We * plug this into the receive descriptor address. * * Next, we skb_reserve() 2 bytes to account for the Happy Meal offset. * So now the data we will end up looking at starts at 0xf001b042. When * the packet arrives, we will check out the size received and subtract * this from the skb->length. Then we just pass the packet up to the * protocols as is, and allocate a new skb to replace this slot we have * just received from. * * The ethernet layer will strip the ether header from the front of the * skb we just sent to it, this leaves us with the ip header sitting * nicely aligned at 0xf001b050. Also, for tcp and udp packets the * Happy Meal has even checksummed the tcp/udp data for us. The 16 * bit checksum is obtained from the low bits of the receive descriptor * flags, thus: * * skb->csum = rxd->rx_flags & 0xffff; * skb->ip_summed = CHECKSUM_COMPLETE; * * before sending off the skb to the protocols, and we are good as gold. */ static void happy_meal_clean_rings(struct happy_meal *hp) { int i; for (i = 0; i < RX_RING_SIZE; i++) { if (hp->rx_skbs[i] != NULL) { struct sk_buff *skb = hp->rx_skbs[i]; struct happy_meal_rxd *rxd; u32 dma_addr; rxd = &hp->happy_block->happy_meal_rxd[i]; dma_addr = hme_read_desc32(hp, &rxd->rx_addr); dma_unmap_single(hp->dma_dev, dma_addr, RX_BUF_ALLOC_SIZE, DMA_FROM_DEVICE); dev_kfree_skb_any(skb); hp->rx_skbs[i] = NULL; } } for (i = 0; i < TX_RING_SIZE; i++) { if (hp->tx_skbs[i] != NULL) { struct sk_buff *skb = hp->tx_skbs[i]; struct happy_meal_txd *txd; u32 dma_addr; int frag; hp->tx_skbs[i] = NULL; for (frag = 0; frag <= skb_shinfo(skb)->nr_frags; frag++) { txd = &hp->happy_block->happy_meal_txd[i]; dma_addr = hme_read_desc32(hp, &txd->tx_addr); if (!frag) dma_unmap_single(hp->dma_dev, dma_addr, (hme_read_desc32(hp, &txd->tx_flags) & TXFLAG_SIZE), DMA_TO_DEVICE); else dma_unmap_page(hp->dma_dev, dma_addr, (hme_read_desc32(hp, &txd->tx_flags) & TXFLAG_SIZE), DMA_TO_DEVICE); if (frag != skb_shinfo(skb)->nr_frags) i++; } dev_kfree_skb_any(skb); } } } /* hp->happy_lock must be held */ static void happy_meal_init_rings(struct happy_meal *hp) { struct hmeal_init_block *hb = hp->happy_block; int i; HMD("counters to zero\n"); hp->rx_new = hp->rx_old = hp->tx_new = hp->tx_old = 0; /* Free any skippy bufs left around in the rings. */ happy_meal_clean_rings(hp); /* Now get new skippy bufs for the receive ring. */ HMD("init rxring\n"); for (i = 0; i < RX_RING_SIZE; i++) { struct sk_buff *skb; u32 mapping; skb = happy_meal_alloc_skb(RX_BUF_ALLOC_SIZE, GFP_ATOMIC); if (!skb) { hme_write_rxd(hp, &hb->happy_meal_rxd[i], 0, 0); continue; } hp->rx_skbs[i] = skb; /* Because we reserve afterwards. */ skb_put(skb, (ETH_FRAME_LEN + RX_OFFSET + 4)); mapping = dma_map_single(hp->dma_dev, skb->data, RX_BUF_ALLOC_SIZE, DMA_FROM_DEVICE); if (dma_mapping_error(hp->dma_dev, mapping)) { dev_kfree_skb_any(skb); hme_write_rxd(hp, &hb->happy_meal_rxd[i], 0, 0); continue; } hme_write_rxd(hp, &hb->happy_meal_rxd[i], (RXFLAG_OWN | ((RX_BUF_ALLOC_SIZE - RX_OFFSET) << 16)), mapping); skb_reserve(skb, RX_OFFSET); } HMD("init txring\n"); for (i = 0; i < TX_RING_SIZE; i++) hme_write_txd(hp, &hb->happy_meal_txd[i], 0, 0); HMD("done\n"); } /* hp->happy_lock must be held */ static void happy_meal_begin_auto_negotiation(struct happy_meal *hp, void __iomem *tregs, const struct ethtool_link_ksettings *ep) { int timeout; /* Read all of the registers we are interested in now. */ hp->sw_bmsr = happy_meal_tcvr_read(hp, tregs, MII_BMSR); hp->sw_bmcr = happy_meal_tcvr_read(hp, tregs, MII_BMCR); hp->sw_physid1 = happy_meal_tcvr_read(hp, tregs, MII_PHYSID1); hp->sw_physid2 = happy_meal_tcvr_read(hp, tregs, MII_PHYSID2); /* XXX Check BMSR_ANEGCAPABLE, should not be necessary though. */ hp->sw_advertise = happy_meal_tcvr_read(hp, tregs, MII_ADVERTISE); if (!ep || ep->base.autoneg == AUTONEG_ENABLE) { /* Advertise everything we can support. */ if (hp->sw_bmsr & BMSR_10HALF) hp->sw_advertise |= (ADVERTISE_10HALF); else hp->sw_advertise &= ~(ADVERTISE_10HALF); if (hp->sw_bmsr & BMSR_10FULL) hp->sw_advertise |= (ADVERTISE_10FULL); else hp->sw_advertise &= ~(ADVERTISE_10FULL); if (hp->sw_bmsr & BMSR_100HALF) hp->sw_advertise |= (ADVERTISE_100HALF); else hp->sw_advertise &= ~(ADVERTISE_100HALF); if (hp->sw_bmsr & BMSR_100FULL) hp->sw_advertise |= (ADVERTISE_100FULL); else hp->sw_advertise &= ~(ADVERTISE_100FULL); happy_meal_tcvr_write(hp, tregs, MII_ADVERTISE, hp->sw_advertise); /* XXX Currently no Happy Meal cards I know off support 100BaseT4, * XXX and this is because the DP83840 does not support it, changes * XXX would need to be made to the tx/rx logic in the driver as well * XXX so I completely skip checking for it in the BMSR for now. */ ASD("Advertising [ %s%s%s%s]\n", hp->sw_advertise & ADVERTISE_10HALF ? "10H " : "", hp->sw_advertise & ADVERTISE_10FULL ? "10F " : "", hp->sw_advertise & ADVERTISE_100HALF ? "100H " : "", hp->sw_advertise & ADVERTISE_100FULL ? "100F " : ""); /* Enable Auto-Negotiation, this is usually on already... */ hp->sw_bmcr |= BMCR_ANENABLE; happy_meal_tcvr_write(hp, tregs, MII_BMCR, hp->sw_bmcr); /* Restart it to make sure it is going. */ hp->sw_bmcr |= BMCR_ANRESTART; happy_meal_tcvr_write(hp, tregs, MII_BMCR, hp->sw_bmcr); /* BMCR_ANRESTART self clears when the process has begun. */ timeout = 64; /* More than enough. */ while (--timeout) { hp->sw_bmcr = happy_meal_tcvr_read(hp, tregs, MII_BMCR); if (!(hp->sw_bmcr & BMCR_ANRESTART)) break; /* got it. */ udelay(10); } if (!timeout) { netdev_err(hp->dev, "Happy Meal would not start auto negotiation BMCR=0x%04x\n", hp->sw_bmcr); netdev_notice(hp->dev, "Performing force link detection.\n"); goto force_link; } else { hp->timer_state = arbwait; } } else { force_link: /* Force the link up, trying first a particular mode. * Either we are here at the request of ethtool or * because the Happy Meal would not start to autoneg. */ /* Disable auto-negotiation in BMCR, enable the duplex and * speed setting, init the timer state machine, and fire it off. */ if (!ep || ep->base.autoneg == AUTONEG_ENABLE) { hp->sw_bmcr = BMCR_SPEED100; } else { if (ep->base.speed == SPEED_100) hp->sw_bmcr = BMCR_SPEED100; else hp->sw_bmcr = 0; if (ep->base.duplex == DUPLEX_FULL) hp->sw_bmcr |= BMCR_FULLDPLX; } happy_meal_tcvr_write(hp, tregs, MII_BMCR, hp->sw_bmcr); if (!is_lucent_phy(hp)) { /* OK, seems we need do disable the transceiver for the first * tick to make sure we get an accurate link state at the * second tick. */ hp->sw_csconfig = happy_meal_tcvr_read(hp, tregs, DP83840_CSCONFIG); hp->sw_csconfig &= ~(CSCONFIG_TCVDISAB); happy_meal_tcvr_write(hp, tregs, DP83840_CSCONFIG, hp->sw_csconfig); } hp->timer_state = ltrywait; } hp->timer_ticks = 0; hp->happy_timer.expires = jiffies + (12 * HZ)/10; /* 1.2 sec. */ add_timer(&hp->happy_timer); } /* hp->happy_lock must be held */ static int happy_meal_init(struct happy_meal *hp) { const unsigned char *e = &hp->dev->dev_addr[0]; void __iomem *gregs = hp->gregs; void __iomem *etxregs = hp->etxregs; void __iomem *erxregs = hp->erxregs; void __iomem *bregs = hp->bigmacregs; void __iomem *tregs = hp->tcvregs; const char *bursts = "64"; u32 regtmp, rxcfg; /* If auto-negotiation timer is running, kill it. */ del_timer(&hp->happy_timer); HMD("happy_flags[%08x]\n", hp->happy_flags); if (!(hp->happy_flags & HFLAG_INIT)) { HMD("set HFLAG_INIT\n"); hp->happy_flags |= HFLAG_INIT; happy_meal_get_counters(hp, bregs); } /* Stop polling. */ HMD("to happy_meal_poll_stop\n"); happy_meal_poll_stop(hp, tregs); /* Stop transmitter and receiver. */ HMD("to happy_meal_stop\n"); happy_meal_stop(hp, gregs); /* Alloc and reset the tx/rx descriptor chains. */ HMD("to happy_meal_init_rings\n"); happy_meal_init_rings(hp); /* Shut up the MIF. */ HMD("Disable all MIF irqs (old[%08x])\n", hme_read32(hp, tregs + TCVR_IMASK)); hme_write32(hp, tregs + TCVR_IMASK, 0xffff); /* See if we can enable the MIF frame on this card to speak to the DP83840. */ if (hp->happy_flags & HFLAG_FENABLE) { HMD("use frame old[%08x]\n", hme_read32(hp, tregs + TCVR_CFG)); hme_write32(hp, tregs + TCVR_CFG, hme_read32(hp, tregs + TCVR_CFG) & ~(TCV_CFG_BENABLE)); } else { HMD("use bitbang old[%08x]\n", hme_read32(hp, tregs + TCVR_CFG)); hme_write32(hp, tregs + TCVR_CFG, hme_read32(hp, tregs + TCVR_CFG) | TCV_CFG_BENABLE); } /* Check the state of the transceiver. */ HMD("to happy_meal_transceiver_check\n"); happy_meal_transceiver_check(hp, tregs); /* Put the Big Mac into a sane state. */ switch(hp->tcvr_type) { case none: /* Cannot operate if we don't know the transceiver type! */ HMD("AAIEEE no transceiver type, EAGAIN\n"); return -EAGAIN; case internal: /* Using the MII buffers. */ HMD("internal, using MII\n"); hme_write32(hp, bregs + BMAC_XIFCFG, 0); break; case external: /* Not using the MII, disable it. */ HMD("external, disable MII\n"); hme_write32(hp, bregs + BMAC_XIFCFG, BIGMAC_XCFG_MIIDISAB); break; } if (happy_meal_tcvr_reset(hp, tregs)) return -EAGAIN; /* Reset the Happy Meal Big Mac transceiver and the receiver. */ HMD("tx/rx reset\n"); happy_meal_tx_reset(hp, bregs); happy_meal_rx_reset(hp, bregs); /* Set jam size and inter-packet gaps to reasonable defaults. */ hme_write32(hp, bregs + BMAC_JSIZE, DEFAULT_JAMSIZE); hme_write32(hp, bregs + BMAC_IGAP1, DEFAULT_IPG1); hme_write32(hp, bregs + BMAC_IGAP2, DEFAULT_IPG2); /* Load up the MAC address and random seed. */ /* The docs recommend to use the 10LSB of our MAC here. */ hme_write32(hp, bregs + BMAC_RSEED, ((e[5] | e[4]<<8)&0x3ff)); hme_write32(hp, bregs + BMAC_MACADDR2, ((e[4] << 8) | e[5])); hme_write32(hp, bregs + BMAC_MACADDR1, ((e[2] << 8) | e[3])); hme_write32(hp, bregs + BMAC_MACADDR0, ((e[0] << 8) | e[1])); if ((hp->dev->flags & IFF_ALLMULTI) || (netdev_mc_count(hp->dev) > 64)) { hme_write32(hp, bregs + BMAC_HTABLE0, 0xffff); hme_write32(hp, bregs + BMAC_HTABLE1, 0xffff); hme_write32(hp, bregs + BMAC_HTABLE2, 0xffff); hme_write32(hp, bregs + BMAC_HTABLE3, 0xffff); } else if ((hp->dev->flags & IFF_PROMISC) == 0) { u16 hash_table[4]; struct netdev_hw_addr *ha; u32 crc; memset(hash_table, 0, sizeof(hash_table)); netdev_for_each_mc_addr(ha, hp->dev) { crc = ether_crc_le(6, ha->addr); crc >>= 26; hash_table[crc >> 4] |= 1 << (crc & 0xf); } hme_write32(hp, bregs + BMAC_HTABLE0, hash_table[0]); hme_write32(hp, bregs + BMAC_HTABLE1, hash_table[1]); hme_write32(hp, bregs + BMAC_HTABLE2, hash_table[2]); hme_write32(hp, bregs + BMAC_HTABLE3, hash_table[3]); } else { hme_write32(hp, bregs + BMAC_HTABLE3, 0); hme_write32(hp, bregs + BMAC_HTABLE2, 0); hme_write32(hp, bregs + BMAC_HTABLE1, 0); hme_write32(hp, bregs + BMAC_HTABLE0, 0); } /* Set the RX and TX ring ptrs. */ HMD("ring ptrs rxr[%08x] txr[%08x]\n", ((__u32)hp->hblock_dvma + hblock_offset(happy_meal_rxd, 0)), ((__u32)hp->hblock_dvma + hblock_offset(happy_meal_txd, 0))); hme_write32(hp, erxregs + ERX_RING, ((__u32)hp->hblock_dvma + hblock_offset(happy_meal_rxd, 0))); hme_write32(hp, etxregs + ETX_RING, ((__u32)hp->hblock_dvma + hblock_offset(happy_meal_txd, 0))); /* Parity issues in the ERX unit of some HME revisions can cause some * registers to not be written unless their parity is even. Detect such * lost writes and simply rewrite with a low bit set (which will be ignored * since the rxring needs to be 2K aligned). */ if (hme_read32(hp, erxregs + ERX_RING) != ((__u32)hp->hblock_dvma + hblock_offset(happy_meal_rxd, 0))) hme_write32(hp, erxregs + ERX_RING, ((__u32)hp->hblock_dvma + hblock_offset(happy_meal_rxd, 0)) | 0x4); /* Set the supported burst sizes. */ #ifndef CONFIG_SPARC /* It is always PCI and can handle 64byte bursts. */ hme_write32(hp, gregs + GREG_CFG, GREG_CFG_BURST64); #else if ((hp->happy_bursts & DMA_BURST64) && ((hp->happy_flags & HFLAG_PCI) != 0 #ifdef CONFIG_SBUS || sbus_can_burst64() #endif || 0)) { u32 gcfg = GREG_CFG_BURST64; /* I have no idea if I should set the extended * transfer mode bit for Cheerio, so for now I * do not. -DaveM */ #ifdef CONFIG_SBUS if ((hp->happy_flags & HFLAG_PCI) == 0) { struct platform_device *op = hp->happy_dev; if (sbus_can_dma_64bit()) { sbus_set_sbus64(&op->dev, hp->happy_bursts); gcfg |= GREG_CFG_64BIT; } } #endif bursts = "64"; hme_write32(hp, gregs + GREG_CFG, gcfg); } else if (hp->happy_bursts & DMA_BURST32) { bursts = "32"; hme_write32(hp, gregs + GREG_CFG, GREG_CFG_BURST32); } else if (hp->happy_bursts & DMA_BURST16) { bursts = "16"; hme_write32(hp, gregs + GREG_CFG, GREG_CFG_BURST16); } else { bursts = "XXX"; hme_write32(hp, gregs + GREG_CFG, 0); } #endif /* CONFIG_SPARC */ HMD("old[%08x] bursts<%s>\n", hme_read32(hp, gregs + GREG_CFG), bursts); /* Turn off interrupts we do not want to hear. */ hme_write32(hp, gregs + GREG_IMASK, (GREG_IMASK_GOTFRAME | GREG_IMASK_RCNTEXP | GREG_IMASK_SENTFRAME | GREG_IMASK_TXPERR)); /* Set the transmit ring buffer size. */ HMD("tx rsize=%d oreg[%08x]\n", (int)TX_RING_SIZE, hme_read32(hp, etxregs + ETX_RSIZE)); hme_write32(hp, etxregs + ETX_RSIZE, (TX_RING_SIZE >> ETX_RSIZE_SHIFT) - 1); /* Enable transmitter DVMA. */ HMD("tx dma enable old[%08x]\n", hme_read32(hp, etxregs + ETX_CFG)); hme_write32(hp, etxregs + ETX_CFG, hme_read32(hp, etxregs + ETX_CFG) | ETX_CFG_DMAENABLE); /* This chip really rots, for the receiver sometimes when you * write to its control registers not all the bits get there * properly. I cannot think of a sane way to provide complete * coverage for this hardware bug yet. */ HMD("erx regs bug old[%08x]\n", hme_read32(hp, erxregs + ERX_CFG)); hme_write32(hp, erxregs + ERX_CFG, ERX_CFG_DEFAULT(RX_OFFSET)); regtmp = hme_read32(hp, erxregs + ERX_CFG); hme_write32(hp, erxregs + ERX_CFG, ERX_CFG_DEFAULT(RX_OFFSET)); if (hme_read32(hp, erxregs + ERX_CFG) != ERX_CFG_DEFAULT(RX_OFFSET)) { netdev_err(hp->dev, "Eieee, rx config register gets greasy fries.\n"); netdev_err(hp->dev, "Trying to set %08x, reread gives %08x\n", ERX_CFG_DEFAULT(RX_OFFSET), regtmp); /* XXX Should return failure here... */ } /* Enable Big Mac hash table filter. */ HMD("enable hash rx_cfg_old[%08x]\n", hme_read32(hp, bregs + BMAC_RXCFG)); rxcfg = BIGMAC_RXCFG_HENABLE | BIGMAC_RXCFG_REJME; if (hp->dev->flags & IFF_PROMISC) rxcfg |= BIGMAC_RXCFG_PMISC; hme_write32(hp, bregs + BMAC_RXCFG, rxcfg); /* Let the bits settle in the chip. */ udelay(10); /* Ok, configure the Big Mac transmitter. */ HMD("BIGMAC init\n"); regtmp = 0; if (hp->happy_flags & HFLAG_FULL) regtmp |= BIGMAC_TXCFG_FULLDPLX; /* Don't turn on the "don't give up" bit for now. It could cause hme * to deadlock with the PHY if a Jabber occurs. */ hme_write32(hp, bregs + BMAC_TXCFG, regtmp /*| BIGMAC_TXCFG_DGIVEUP*/); /* Give up after 16 TX attempts. */ hme_write32(hp, bregs + BMAC_ALIMIT, 16); /* Enable the output drivers no matter what. */ regtmp = BIGMAC_XCFG_ODENABLE; /* If card can do lance mode, enable it. */ if (hp->happy_flags & HFLAG_LANCE) regtmp |= (DEFAULT_IPG0 << 5) | BIGMAC_XCFG_LANCE; /* Disable the MII buffers if using external transceiver. */ if (hp->tcvr_type == external) regtmp |= BIGMAC_XCFG_MIIDISAB; HMD("XIF config old[%08x]\n", hme_read32(hp, bregs + BMAC_XIFCFG)); hme_write32(hp, bregs + BMAC_XIFCFG, regtmp); /* Start things up. */ HMD("tx old[%08x] and rx [%08x] ON!\n", hme_read32(hp, bregs + BMAC_TXCFG), hme_read32(hp, bregs + BMAC_RXCFG)); /* Set larger TX/RX size to allow for 802.1q */ hme_write32(hp, bregs + BMAC_TXMAX, ETH_FRAME_LEN + 8); hme_write32(hp, bregs + BMAC_RXMAX, ETH_FRAME_LEN + 8); hme_write32(hp, bregs + BMAC_TXCFG, hme_read32(hp, bregs + BMAC_TXCFG) | BIGMAC_TXCFG_ENABLE); hme_write32(hp, bregs + BMAC_RXCFG, hme_read32(hp, bregs + BMAC_RXCFG) | BIGMAC_RXCFG_ENABLE); /* Get the autonegotiation started, and the watch timer ticking. */ happy_meal_begin_auto_negotiation(hp, tregs, NULL); /* Success. */ return 0; } /* hp->happy_lock must be held */ static void happy_meal_set_initial_advertisement(struct happy_meal *hp) { void __iomem *tregs = hp->tcvregs; void __iomem *bregs = hp->bigmacregs; void __iomem *gregs = hp->gregs; happy_meal_stop(hp, gregs); hme_write32(hp, tregs + TCVR_IMASK, 0xffff); if (hp->happy_flags & HFLAG_FENABLE) hme_write32(hp, tregs + TCVR_CFG, hme_read32(hp, tregs + TCVR_CFG) & ~(TCV_CFG_BENABLE)); else hme_write32(hp, tregs + TCVR_CFG, hme_read32(hp, tregs + TCVR_CFG) | TCV_CFG_BENABLE); happy_meal_transceiver_check(hp, tregs); switch(hp->tcvr_type) { case none: return; case internal: hme_write32(hp, bregs + BMAC_XIFCFG, 0); break; case external: hme_write32(hp, bregs + BMAC_XIFCFG, BIGMAC_XCFG_MIIDISAB); break; } if (happy_meal_tcvr_reset(hp, tregs)) return; /* Latch PHY registers as of now. */ hp->sw_bmsr = happy_meal_tcvr_read(hp, tregs, MII_BMSR); hp->sw_advertise = happy_meal_tcvr_read(hp, tregs, MII_ADVERTISE); /* Advertise everything we can support. */ if (hp->sw_bmsr & BMSR_10HALF) hp->sw_advertise |= (ADVERTISE_10HALF); else hp->sw_advertise &= ~(ADVERTISE_10HALF); if (hp->sw_bmsr & BMSR_10FULL) hp->sw_advertise |= (ADVERTISE_10FULL); else hp->sw_advertise &= ~(ADVERTISE_10FULL); if (hp->sw_bmsr & BMSR_100HALF) hp->sw_advertise |= (ADVERTISE_100HALF); else hp->sw_advertise &= ~(ADVERTISE_100HALF); if (hp->sw_bmsr & BMSR_100FULL) hp->sw_advertise |= (ADVERTISE_100FULL); else hp->sw_advertise &= ~(ADVERTISE_100FULL); /* Update the PHY advertisement register. */ happy_meal_tcvr_write(hp, tregs, MII_ADVERTISE, hp->sw_advertise); } /* Once status is latched (by happy_meal_interrupt) it is cleared by * the hardware, so we cannot re-read it and get a correct value. * * hp->happy_lock must be held */ static int happy_meal_is_not_so_happy(struct happy_meal *hp, u32 status) { int reset = 0; /* Only print messages for non-counter related interrupts. */ if (status & (GREG_STAT_STSTERR | GREG_STAT_TFIFO_UND | GREG_STAT_MAXPKTERR | GREG_STAT_RXERR | GREG_STAT_RXPERR | GREG_STAT_RXTERR | GREG_STAT_EOPERR | GREG_STAT_MIFIRQ | GREG_STAT_TXEACK | GREG_STAT_TXLERR | GREG_STAT_TXPERR | GREG_STAT_TXTERR | GREG_STAT_SLVERR | GREG_STAT_SLVPERR)) netdev_err(hp->dev, "Error interrupt for happy meal, status = %08x\n", status); if (status & GREG_STAT_RFIFOVF) { /* Receive FIFO overflow is harmless and the hardware will take care of it, just some packets are lost. Who cares. */ netdev_dbg(hp->dev, "Happy Meal receive FIFO overflow.\n"); } if (status & GREG_STAT_STSTERR) { /* BigMAC SQE link test failed. */ netdev_err(hp->dev, "Happy Meal BigMAC SQE test failed.\n"); reset = 1; } if (status & GREG_STAT_TFIFO_UND) { /* Transmit FIFO underrun, again DMA error likely. */ netdev_err(hp->dev, "Happy Meal transmitter FIFO underrun, DMA error.\n"); reset = 1; } if (status & GREG_STAT_MAXPKTERR) { /* Driver error, tried to transmit something larger * than ethernet max mtu. */ netdev_err(hp->dev, "Happy Meal MAX Packet size error.\n"); reset = 1; } if (status & GREG_STAT_NORXD) { /* This is harmless, it just means the system is * quite loaded and the incoming packet rate was * faster than the interrupt handler could keep up * with. */ netdev_info(hp->dev, "Happy Meal out of receive descriptors, packet dropped.\n"); } if (status & (GREG_STAT_RXERR|GREG_STAT_RXPERR|GREG_STAT_RXTERR)) { /* All sorts of DMA receive errors. */ netdev_err(hp->dev, "Happy Meal rx DMA errors [ %s%s%s]\n", status & GREG_STAT_RXERR ? "GenericError " : "", status & GREG_STAT_RXPERR ? "ParityError " : "", status & GREG_STAT_RXTERR ? "RxTagBotch " : ""); reset = 1; } if (status & GREG_STAT_EOPERR) { /* Driver bug, didn't set EOP bit in tx descriptor given * to the happy meal. */ netdev_err(hp->dev, "EOP not set in happy meal transmit descriptor!\n"); reset = 1; } if (status & GREG_STAT_MIFIRQ) { /* MIF signalled an interrupt, were we polling it? */ netdev_err(hp->dev, "Happy Meal MIF interrupt.\n"); } if (status & (GREG_STAT_TXEACK|GREG_STAT_TXLERR|GREG_STAT_TXPERR|GREG_STAT_TXTERR)) { /* All sorts of transmit DMA errors. */ netdev_err(hp->dev, "Happy Meal tx DMA errors [ %s%s%s%s]\n", status & GREG_STAT_TXEACK ? "GenericError " : "", status & GREG_STAT_TXLERR ? "LateError " : "", status & GREG_STAT_TXPERR ? "ParityError " : "", status & GREG_STAT_TXTERR ? "TagBotch " : ""); reset = 1; } if (status & (GREG_STAT_SLVERR|GREG_STAT_SLVPERR)) { /* Bus or parity error when cpu accessed happy meal registers * or it's internal FIFO's. Should never see this. */ netdev_err(hp->dev, "Happy Meal register access SBUS slave (%s) error.\n", (status & GREG_STAT_SLVPERR) ? "parity" : "generic"); reset = 1; } if (reset) { netdev_notice(hp->dev, "Resetting...\n"); happy_meal_init(hp); return 1; } return 0; } /* hp->happy_lock must be held */ static void happy_meal_mif_interrupt(struct happy_meal *hp) { void __iomem *tregs = hp->tcvregs; netdev_info(hp->dev, "Link status change.\n"); hp->sw_bmcr = happy_meal_tcvr_read(hp, tregs, MII_BMCR); hp->sw_lpa = happy_meal_tcvr_read(hp, tregs, MII_LPA); /* Use the fastest transmission protocol possible. */ if (hp->sw_lpa & LPA_100FULL) { netdev_info(hp->dev, "Switching to 100Mbps at full duplex.\n"); hp->sw_bmcr |= (BMCR_FULLDPLX | BMCR_SPEED100); } else if (hp->sw_lpa & LPA_100HALF) { netdev_info(hp->dev, "Switching to 100MBps at half duplex.\n"); hp->sw_bmcr |= BMCR_SPEED100; } else if (hp->sw_lpa & LPA_10FULL) { netdev_info(hp->dev, "Switching to 10MBps at full duplex.\n"); hp->sw_bmcr |= BMCR_FULLDPLX; } else { netdev_info(hp->dev, "Using 10Mbps at half duplex.\n"); } happy_meal_tcvr_write(hp, tregs, MII_BMCR, hp->sw_bmcr); /* Finally stop polling and shut up the MIF. */ happy_meal_poll_stop(hp, tregs); } /* hp->happy_lock must be held */ static void happy_meal_tx(struct happy_meal *hp) { struct happy_meal_txd *txbase = &hp->happy_block->happy_meal_txd[0]; struct happy_meal_txd *this; struct net_device *dev = hp->dev; int elem; elem = hp->tx_old; while (elem != hp->tx_new) { struct sk_buff *skb; u32 flags, dma_addr, dma_len; int frag; netdev_vdbg(hp->dev, "TX[%d]\n", elem); this = &txbase[elem]; flags = hme_read_desc32(hp, &this->tx_flags); if (flags & TXFLAG_OWN) break; skb = hp->tx_skbs[elem]; if (skb_shinfo(skb)->nr_frags) { int last; last = elem + skb_shinfo(skb)->nr_frags; last &= (TX_RING_SIZE - 1); flags = hme_read_desc32(hp, &txbase[last].tx_flags); if (flags & TXFLAG_OWN) break; } hp->tx_skbs[elem] = NULL; dev->stats.tx_bytes += skb->len; for (frag = 0; frag <= skb_shinfo(skb)->nr_frags; frag++) { dma_addr = hme_read_desc32(hp, &this->tx_addr); dma_len = hme_read_desc32(hp, &this->tx_flags); dma_len &= TXFLAG_SIZE; if (!frag) dma_unmap_single(hp->dma_dev, dma_addr, dma_len, DMA_TO_DEVICE); else dma_unmap_page(hp->dma_dev, dma_addr, dma_len, DMA_TO_DEVICE); elem = NEXT_TX(elem); this = &txbase[elem]; } dev_consume_skb_irq(skb); dev->stats.tx_packets++; } hp->tx_old = elem; if (netif_queue_stopped(dev) && TX_BUFFS_AVAIL(hp) > (MAX_SKB_FRAGS + 1)) netif_wake_queue(dev); } /* Originally I used to handle the allocation failure by just giving back just * that one ring buffer to the happy meal. Problem is that usually when that * condition is triggered, the happy meal expects you to do something reasonable * with all of the packets it has DMA'd in. So now I just drop the entire * ring when we cannot get a new skb and give them all back to the happy meal, * maybe things will be "happier" now. * * hp->happy_lock must be held */ static void happy_meal_rx(struct happy_meal *hp, struct net_device *dev) { struct happy_meal_rxd *rxbase = &hp->happy_block->happy_meal_rxd[0]; struct happy_meal_rxd *this; int elem = hp->rx_new, drops = 0; u32 flags; this = &rxbase[elem]; while (!((flags = hme_read_desc32(hp, &this->rx_flags)) & RXFLAG_OWN)) { struct sk_buff *skb; int len = flags >> 16; u16 csum = flags & RXFLAG_CSUM; u32 dma_addr = hme_read_desc32(hp, &this->rx_addr); /* Check for errors. */ if ((len < ETH_ZLEN) || (flags & RXFLAG_OVERFLOW)) { netdev_vdbg(dev, "RX[%d ERR(%08x)]", elem, flags); dev->stats.rx_errors++; if (len < ETH_ZLEN) dev->stats.rx_length_errors++; if (len & (RXFLAG_OVERFLOW >> 16)) { dev->stats.rx_over_errors++; dev->stats.rx_fifo_errors++; } /* Return it to the Happy meal. */ drop_it: dev->stats.rx_dropped++; hme_write_rxd(hp, this, (RXFLAG_OWN|((RX_BUF_ALLOC_SIZE-RX_OFFSET)<<16)), dma_addr); goto next; } skb = hp->rx_skbs[elem]; if (len > RX_COPY_THRESHOLD) { struct sk_buff *new_skb; u32 mapping; /* Now refill the entry, if we can. */ new_skb = happy_meal_alloc_skb(RX_BUF_ALLOC_SIZE, GFP_ATOMIC); if (new_skb == NULL) { drops++; goto drop_it; } skb_put(new_skb, (ETH_FRAME_LEN + RX_OFFSET + 4)); mapping = dma_map_single(hp->dma_dev, new_skb->data, RX_BUF_ALLOC_SIZE, DMA_FROM_DEVICE); if (unlikely(dma_mapping_error(hp->dma_dev, mapping))) { dev_kfree_skb_any(new_skb); drops++; goto drop_it; } dma_unmap_single(hp->dma_dev, dma_addr, RX_BUF_ALLOC_SIZE, DMA_FROM_DEVICE); hp->rx_skbs[elem] = new_skb; hme_write_rxd(hp, this, (RXFLAG_OWN|((RX_BUF_ALLOC_SIZE-RX_OFFSET)<<16)), mapping); skb_reserve(new_skb, RX_OFFSET); /* Trim the original skb for the netif. */ skb_trim(skb, len); } else { struct sk_buff *copy_skb = netdev_alloc_skb(dev, len + 2); if (copy_skb == NULL) { drops++; goto drop_it; } skb_reserve(copy_skb, 2); skb_put(copy_skb, len); dma_sync_single_for_cpu(hp->dma_dev, dma_addr, len + 2, DMA_FROM_DEVICE); skb_copy_from_linear_data(skb, copy_skb->data, len); dma_sync_single_for_device(hp->dma_dev, dma_addr, len + 2, DMA_FROM_DEVICE); /* Reuse original ring buffer. */ hme_write_rxd(hp, this, (RXFLAG_OWN|((RX_BUF_ALLOC_SIZE-RX_OFFSET)<<16)), dma_addr); skb = copy_skb; } /* This card is _fucking_ hot... */ skb->csum = csum_unfold(~(__force __sum16)htons(csum)); skb->ip_summed = CHECKSUM_COMPLETE; netdev_vdbg(dev, "RX[%d len=%d csum=%4x]", elem, len, csum); skb->protocol = eth_type_trans(skb, dev); netif_rx(skb); dev->stats.rx_packets++; dev->stats.rx_bytes += len; next: elem = NEXT_RX(elem); this = &rxbase[elem]; } hp->rx_new = elem; if (drops) netdev_info(hp->dev, "Memory squeeze, deferring packet.\n"); } static irqreturn_t happy_meal_interrupt(int irq, void *dev_id) { struct net_device *dev = dev_id; struct happy_meal *hp = netdev_priv(dev); u32 happy_status = hme_read32(hp, hp->gregs + GREG_STAT); HMD("status=%08x\n", happy_status); spin_lock(&hp->happy_lock); if (happy_status & GREG_STAT_ERRORS) { if (happy_meal_is_not_so_happy(hp, /* un- */ happy_status)) goto out; } if (happy_status & GREG_STAT_MIFIRQ) happy_meal_mif_interrupt(hp); if (happy_status & GREG_STAT_TXALL) happy_meal_tx(hp); if (happy_status & GREG_STAT_RXTOHOST) happy_meal_rx(hp, dev); HMD("done\n"); out: spin_unlock(&hp->happy_lock); return IRQ_HANDLED; } #ifdef CONFIG_SBUS static irqreturn_t quattro_sbus_interrupt(int irq, void *cookie) { struct quattro *qp = (struct quattro *) cookie; int i; for (i = 0; i < 4; i++) { struct net_device *dev = qp->happy_meals[i]; struct happy_meal *hp = netdev_priv(dev); u32 happy_status = hme_read32(hp, hp->gregs + GREG_STAT); HMD("status=%08x\n", happy_status); if (!(happy_status & (GREG_STAT_ERRORS | GREG_STAT_MIFIRQ | GREG_STAT_TXALL | GREG_STAT_RXTOHOST))) continue; spin_lock(&hp->happy_lock); if (happy_status & GREG_STAT_ERRORS) if (happy_meal_is_not_so_happy(hp, happy_status)) goto next; if (happy_status & GREG_STAT_MIFIRQ) happy_meal_mif_interrupt(hp); if (happy_status & GREG_STAT_TXALL) happy_meal_tx(hp); if (happy_status & GREG_STAT_RXTOHOST) happy_meal_rx(hp, dev); next: spin_unlock(&hp->happy_lock); } HMD("done\n"); return IRQ_HANDLED; } #endif static int happy_meal_open(struct net_device *dev) { struct happy_meal *hp = netdev_priv(dev); int res; /* On SBUS Quattro QFE cards, all hme interrupts are concentrated * into a single source which we register handling at probe time. */ if ((hp->happy_flags & (HFLAG_QUATTRO|HFLAG_PCI)) != HFLAG_QUATTRO) { res = request_irq(hp->irq, happy_meal_interrupt, IRQF_SHARED, dev->name, dev); if (res) { HMD("EAGAIN\n"); netdev_err(dev, "Can't order irq %d to go.\n", hp->irq); return -EAGAIN; } } HMD("to happy_meal_init\n"); spin_lock_irq(&hp->happy_lock); res = happy_meal_init(hp); spin_unlock_irq(&hp->happy_lock); if (res && ((hp->happy_flags & (HFLAG_QUATTRO|HFLAG_PCI)) != HFLAG_QUATTRO)) free_irq(hp->irq, dev); return res; } static int happy_meal_close(struct net_device *dev) { struct happy_meal *hp = netdev_priv(dev); spin_lock_irq(&hp->happy_lock); happy_meal_stop(hp, hp->gregs); happy_meal_clean_rings(hp); /* If auto-negotiation timer is running, kill it. */ del_timer(&hp->happy_timer); spin_unlock_irq(&hp->happy_lock); /* On Quattro QFE cards, all hme interrupts are concentrated * into a single source which we register handling at probe * time and never unregister. */ if ((hp->happy_flags & (HFLAG_QUATTRO|HFLAG_PCI)) != HFLAG_QUATTRO) free_irq(hp->irq, dev); return 0; } static void happy_meal_tx_timeout(struct net_device *dev, unsigned int txqueue) { struct happy_meal *hp = netdev_priv(dev); netdev_err(dev, "transmit timed out, resetting\n"); tx_dump_log(); netdev_err(dev, "Happy Status %08x TX[%08x:%08x]\n", hme_read32(hp, hp->gregs + GREG_STAT), hme_read32(hp, hp->etxregs + ETX_CFG), hme_read32(hp, hp->bigmacregs + BMAC_TXCFG)); spin_lock_irq(&hp->happy_lock); happy_meal_init(hp); spin_unlock_irq(&hp->happy_lock); netif_wake_queue(dev); } static void unmap_partial_tx_skb(struct happy_meal *hp, u32 first_mapping, u32 first_len, u32 first_entry, u32 entry) { struct happy_meal_txd *txbase = &hp->happy_block->happy_meal_txd[0]; dma_unmap_single(hp->dma_dev, first_mapping, first_len, DMA_TO_DEVICE); first_entry = NEXT_TX(first_entry); while (first_entry != entry) { struct happy_meal_txd *this = &txbase[first_entry]; u32 addr, len; addr = hme_read_desc32(hp, &this->tx_addr); len = hme_read_desc32(hp, &this->tx_flags); len &= TXFLAG_SIZE; dma_unmap_page(hp->dma_dev, addr, len, DMA_TO_DEVICE); } } static netdev_tx_t happy_meal_start_xmit(struct sk_buff *skb, struct net_device *dev) { struct happy_meal *hp = netdev_priv(dev); int entry; u32 tx_flags; tx_flags = TXFLAG_OWN; if (skb->ip_summed == CHECKSUM_PARTIAL) { const u32 csum_start_off = skb_checksum_start_offset(skb); const u32 csum_stuff_off = csum_start_off + skb->csum_offset; tx_flags = (TXFLAG_OWN | TXFLAG_CSENABLE | ((csum_start_off << 14) & TXFLAG_CSBUFBEGIN) | ((csum_stuff_off << 20) & TXFLAG_CSLOCATION)); } spin_lock_irq(&hp->happy_lock); if (TX_BUFFS_AVAIL(hp) <= (skb_shinfo(skb)->nr_frags + 1)) { netif_stop_queue(dev); spin_unlock_irq(&hp->happy_lock); netdev_err(dev, "BUG! Tx Ring full when queue awake!\n"); return NETDEV_TX_BUSY; } entry = hp->tx_new; netdev_vdbg(dev, "SX<l[%d]e[%d]>\n", skb->len, entry); hp->tx_skbs[entry] = skb; if (skb_shinfo(skb)->nr_frags == 0) { u32 mapping, len; len = skb->len; mapping = dma_map_single(hp->dma_dev, skb->data, len, DMA_TO_DEVICE); if (unlikely(dma_mapping_error(hp->dma_dev, mapping))) goto out_dma_error; tx_flags |= (TXFLAG_SOP | TXFLAG_EOP); hme_write_txd(hp, &hp->happy_block->happy_meal_txd[entry], (tx_flags | (len & TXFLAG_SIZE)), mapping); entry = NEXT_TX(entry); } else { u32 first_len, first_mapping; int frag, first_entry = entry; /* We must give this initial chunk to the device last. * Otherwise we could race with the device. */ first_len = skb_headlen(skb); first_mapping = dma_map_single(hp->dma_dev, skb->data, first_len, DMA_TO_DEVICE); if (unlikely(dma_mapping_error(hp->dma_dev, first_mapping))) goto out_dma_error; entry = NEXT_TX(entry); for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) { const skb_frag_t *this_frag = &skb_shinfo(skb)->frags[frag]; u32 len, mapping, this_txflags; len = skb_frag_size(this_frag); mapping = skb_frag_dma_map(hp->dma_dev, this_frag, 0, len, DMA_TO_DEVICE); if (unlikely(dma_mapping_error(hp->dma_dev, mapping))) { unmap_partial_tx_skb(hp, first_mapping, first_len, first_entry, entry); goto out_dma_error; } this_txflags = tx_flags; if (frag == skb_shinfo(skb)->nr_frags - 1) this_txflags |= TXFLAG_EOP; hme_write_txd(hp, &hp->happy_block->happy_meal_txd[entry], (this_txflags | (len & TXFLAG_SIZE)), mapping); entry = NEXT_TX(entry); } hme_write_txd(hp, &hp->happy_block->happy_meal_txd[first_entry], (tx_flags | TXFLAG_SOP | (first_len & TXFLAG_SIZE)), first_mapping); } hp->tx_new = entry; if (TX_BUFFS_AVAIL(hp) <= (MAX_SKB_FRAGS + 1)) netif_stop_queue(dev); /* Get it going. */ hme_write32(hp, hp->etxregs + ETX_PENDING, ETX_TP_DMAWAKEUP); spin_unlock_irq(&hp->happy_lock); tx_add_log(hp, TXLOG_ACTION_TXMIT, 0); return NETDEV_TX_OK; out_dma_error: hp->tx_skbs[hp->tx_new] = NULL; spin_unlock_irq(&hp->happy_lock); dev_kfree_skb_any(skb); dev->stats.tx_dropped++; return NETDEV_TX_OK; } static struct net_device_stats *happy_meal_get_stats(struct net_device *dev) { struct happy_meal *hp = netdev_priv(dev); spin_lock_irq(&hp->happy_lock); happy_meal_get_counters(hp, hp->bigmacregs); spin_unlock_irq(&hp->happy_lock); return &dev->stats; } static void happy_meal_set_multicast(struct net_device *dev) { struct happy_meal *hp = netdev_priv(dev); void __iomem *bregs = hp->bigmacregs; struct netdev_hw_addr *ha; u32 crc; spin_lock_irq(&hp->happy_lock); if ((dev->flags & IFF_ALLMULTI) || (netdev_mc_count(dev) > 64)) { hme_write32(hp, bregs + BMAC_HTABLE0, 0xffff); hme_write32(hp, bregs + BMAC_HTABLE1, 0xffff); hme_write32(hp, bregs + BMAC_HTABLE2, 0xffff); hme_write32(hp, bregs + BMAC_HTABLE3, 0xffff); } else if (dev->flags & IFF_PROMISC) { hme_write32(hp, bregs + BMAC_RXCFG, hme_read32(hp, bregs + BMAC_RXCFG) | BIGMAC_RXCFG_PMISC); } else { u16 hash_table[4]; memset(hash_table, 0, sizeof(hash_table)); netdev_for_each_mc_addr(ha, dev) { crc = ether_crc_le(6, ha->addr); crc >>= 26; hash_table[crc >> 4] |= 1 << (crc & 0xf); } hme_write32(hp, bregs + BMAC_HTABLE0, hash_table[0]); hme_write32(hp, bregs + BMAC_HTABLE1, hash_table[1]); hme_write32(hp, bregs + BMAC_HTABLE2, hash_table[2]); hme_write32(hp, bregs + BMAC_HTABLE3, hash_table[3]); } spin_unlock_irq(&hp->happy_lock); } /* Ethtool support... */ static int hme_get_link_ksettings(struct net_device *dev, struct ethtool_link_ksettings *cmd) { struct happy_meal *hp = netdev_priv(dev); u32 speed; u32 supported; supported = (SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full | SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full | SUPPORTED_Autoneg | SUPPORTED_TP | SUPPORTED_MII); /* XXX hardcoded stuff for now */ cmd->base.port = PORT_TP; /* XXX no MII support */ cmd->base.phy_address = 0; /* XXX fixed PHYAD */ /* Record PHY settings. */ spin_lock_irq(&hp->happy_lock); hp->sw_bmcr = happy_meal_tcvr_read(hp, hp->tcvregs, MII_BMCR); hp->sw_lpa = happy_meal_tcvr_read(hp, hp->tcvregs, MII_LPA); spin_unlock_irq(&hp->happy_lock); if (hp->sw_bmcr & BMCR_ANENABLE) { cmd->base.autoneg = AUTONEG_ENABLE; speed = ((hp->sw_lpa & (LPA_100HALF | LPA_100FULL)) ? SPEED_100 : SPEED_10); if (speed == SPEED_100) cmd->base.duplex = (hp->sw_lpa & (LPA_100FULL)) ? DUPLEX_FULL : DUPLEX_HALF; else cmd->base.duplex = (hp->sw_lpa & (LPA_10FULL)) ? DUPLEX_FULL : DUPLEX_HALF; } else { cmd->base.autoneg = AUTONEG_DISABLE; speed = (hp->sw_bmcr & BMCR_SPEED100) ? SPEED_100 : SPEED_10; cmd->base.duplex = (hp->sw_bmcr & BMCR_FULLDPLX) ? DUPLEX_FULL : DUPLEX_HALF; } cmd->base.speed = speed; ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported, supported); return 0; } static int hme_set_link_ksettings(struct net_device *dev, const struct ethtool_link_ksettings *cmd) { struct happy_meal *hp = netdev_priv(dev); /* Verify the settings we care about. */ if (cmd->base.autoneg != AUTONEG_ENABLE && cmd->base.autoneg != AUTONEG_DISABLE) return -EINVAL; if (cmd->base.autoneg == AUTONEG_DISABLE && ((cmd->base.speed != SPEED_100 && cmd->base.speed != SPEED_10) || (cmd->base.duplex != DUPLEX_HALF && cmd->base.duplex != DUPLEX_FULL))) return -EINVAL; /* Ok, do it to it. */ spin_lock_irq(&hp->happy_lock); del_timer(&hp->happy_timer); happy_meal_begin_auto_negotiation(hp, hp->tcvregs, cmd); spin_unlock_irq(&hp->happy_lock); return 0; } static void hme_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) { struct happy_meal *hp = netdev_priv(dev); strscpy(info->driver, DRV_NAME, sizeof(info->driver)); if (hp->happy_flags & HFLAG_PCI) { struct pci_dev *pdev = hp->happy_dev; strscpy(info->bus_info, pci_name(pdev), sizeof(info->bus_info)); } #ifdef CONFIG_SBUS else { const struct linux_prom_registers *regs; struct platform_device *op = hp->happy_dev; regs = of_get_property(op->dev.of_node, "regs", NULL); if (regs) snprintf(info->bus_info, sizeof(info->bus_info), "SBUS:%d", regs->which_io); } #endif } static u32 hme_get_link(struct net_device *dev) { struct happy_meal *hp = netdev_priv(dev); spin_lock_irq(&hp->happy_lock); hp->sw_bmcr = happy_meal_tcvr_read(hp, hp->tcvregs, MII_BMCR); spin_unlock_irq(&hp->happy_lock); return hp->sw_bmsr & BMSR_LSTATUS; } static const struct ethtool_ops hme_ethtool_ops = { .get_drvinfo = hme_get_drvinfo, .get_link = hme_get_link, .get_link_ksettings = hme_get_link_ksettings, .set_link_ksettings = hme_set_link_ksettings, }; #ifdef CONFIG_SBUS /* Given a happy meal sbus device, find it's quattro parent. * If none exist, allocate and return a new one. * * Return NULL on failure. */ static struct quattro *quattro_sbus_find(struct platform_device *child) { struct device *parent = child->dev.parent; struct platform_device *op; struct quattro *qp; op = to_platform_device(parent); qp = platform_get_drvdata(op); if (qp) return qp; qp = kzalloc(sizeof(*qp), GFP_KERNEL); if (!qp) return NULL; qp->quattro_dev = child; qp->next = qfe_sbus_list; qfe_sbus_list = qp; platform_set_drvdata(op, qp); return qp; } /* After all quattro cards have been probed, we call these functions * to register the IRQ handlers for the cards that have been * successfully probed and skip the cards that failed to initialize */ static int __init quattro_sbus_register_irqs(void) { struct quattro *qp; for (qp = qfe_sbus_list; qp != NULL; qp = qp->next) { struct platform_device *op = qp->quattro_dev; int err, qfe_slot, skip = 0; for (qfe_slot = 0; qfe_slot < 4; qfe_slot++) { if (!qp->happy_meals[qfe_slot]) skip = 1; } if (skip) continue; err = request_irq(op->archdata.irqs[0], quattro_sbus_interrupt, IRQF_SHARED, "Quattro", qp); if (err != 0) { dev_err(&op->dev, "Quattro HME: IRQ registration error %d.\n", err); return err; } } return 0; } static void quattro_sbus_free_irqs(void) { struct quattro *qp; for (qp = qfe_sbus_list; qp != NULL; qp = qp->next) { struct platform_device *op = qp->quattro_dev; int qfe_slot, skip = 0; for (qfe_slot = 0; qfe_slot < 4; qfe_slot++) { if (!qp->happy_meals[qfe_slot]) skip = 1; } if (skip) continue; free_irq(op->archdata.irqs[0], qp); } } #endif /* CONFIG_SBUS */ #ifdef CONFIG_PCI static struct quattro *quattro_pci_find(struct pci_dev *pdev) { int i; struct pci_dev *bdev = pdev->bus->self; struct quattro *qp; if (!bdev) return ERR_PTR(-ENODEV); for (qp = qfe_pci_list; qp != NULL; qp = qp->next) { struct pci_dev *qpdev = qp->quattro_dev; if (qpdev == bdev) return qp; } qp = kmalloc(sizeof(struct quattro), GFP_KERNEL); if (!qp) return ERR_PTR(-ENOMEM); for (i = 0; i < 4; i++) qp->happy_meals[i] = NULL; qp->quattro_dev = bdev; qp->next = qfe_pci_list; qfe_pci_list = qp; /* No range tricks necessary on PCI. */ qp->nranges = 0; return qp; } #endif /* CONFIG_PCI */ static const struct net_device_ops hme_netdev_ops = { .ndo_open = happy_meal_open, .ndo_stop = happy_meal_close, .ndo_start_xmit = happy_meal_start_xmit, .ndo_tx_timeout = happy_meal_tx_timeout, .ndo_get_stats = happy_meal_get_stats, .ndo_set_rx_mode = happy_meal_set_multicast, .ndo_set_mac_address = eth_mac_addr, .ndo_validate_addr = eth_validate_addr, }; #ifdef CONFIG_SBUS static int happy_meal_sbus_probe_one(struct platform_device *op, int is_qfe) { struct device_node *dp = op->dev.of_node, *sbus_dp; struct quattro *qp = NULL; struct happy_meal *hp; struct net_device *dev; int i, qfe_slot = -1; u8 addr[ETH_ALEN]; int err = -ENODEV; sbus_dp = op->dev.parent->of_node; /* We can match PCI devices too, do not accept those here. */ if (!of_node_name_eq(sbus_dp, "sbus") && !of_node_name_eq(sbus_dp, "sbi")) return err; if (is_qfe) { qp = quattro_sbus_find(op); if (qp == NULL) goto err_out; for (qfe_slot = 0; qfe_slot < 4; qfe_slot++) if (qp->happy_meals[qfe_slot] == NULL) break; if (qfe_slot == 4) goto err_out; } err = -ENOMEM; dev = alloc_etherdev(sizeof(struct happy_meal)); if (!dev) goto err_out; SET_NETDEV_DEV(dev, &op->dev); /* If user did not specify a MAC address specifically, use * the Quattro local-mac-address property... */ for (i = 0; i < 6; i++) { if (macaddr[i] != 0) break; } if (i < 6) { /* a mac address was given */ for (i = 0; i < 6; i++) addr[i] = macaddr[i]; eth_hw_addr_set(dev, addr); macaddr[5]++; } else { const unsigned char *addr; int len; addr = of_get_property(dp, "local-mac-address", &len); if (qfe_slot != -1 && addr && len == ETH_ALEN) eth_hw_addr_set(dev, addr); else eth_hw_addr_set(dev, idprom->id_ethaddr); } hp = netdev_priv(dev); hp->happy_dev = op; hp->dma_dev = &op->dev; spin_lock_init(&hp->happy_lock); err = -ENODEV; if (qp != NULL) { hp->qfe_parent = qp; hp->qfe_ent = qfe_slot; qp->happy_meals[qfe_slot] = dev; } hp->gregs = of_ioremap(&op->resource[0], 0, GREG_REG_SIZE, "HME Global Regs"); if (!hp->gregs) { dev_err(&op->dev, "Cannot map global registers.\n"); goto err_out_free_netdev; } hp->etxregs = of_ioremap(&op->resource[1], 0, ETX_REG_SIZE, "HME TX Regs"); if (!hp->etxregs) { dev_err(&op->dev, "Cannot map MAC TX registers.\n"); goto err_out_iounmap; } hp->erxregs = of_ioremap(&op->resource[2], 0, ERX_REG_SIZE, "HME RX Regs"); if (!hp->erxregs) { dev_err(&op->dev, "Cannot map MAC RX registers.\n"); goto err_out_iounmap; } hp->bigmacregs = of_ioremap(&op->resource[3], 0, BMAC_REG_SIZE, "HME BIGMAC Regs"); if (!hp->bigmacregs) { dev_err(&op->dev, "Cannot map BIGMAC registers.\n"); goto err_out_iounmap; } hp->tcvregs = of_ioremap(&op->resource[4], 0, TCVR_REG_SIZE, "HME Tranceiver Regs"); if (!hp->tcvregs) { dev_err(&op->dev, "Cannot map TCVR registers.\n"); goto err_out_iounmap; } hp->hm_revision = of_getintprop_default(dp, "hm-rev", 0xff); if (hp->hm_revision == 0xff) hp->hm_revision = 0xa0; /* Now enable the feature flags we can. */ if (hp->hm_revision == 0x20 || hp->hm_revision == 0x21) hp->happy_flags = HFLAG_20_21; else if (hp->hm_revision != 0xa0) hp->happy_flags = HFLAG_NOT_A0; if (qp != NULL) hp->happy_flags |= HFLAG_QUATTRO; /* Get the supported DVMA burst sizes from our Happy SBUS. */ hp->happy_bursts = of_getintprop_default(sbus_dp, "burst-sizes", 0x00); hp->happy_block = dma_alloc_coherent(hp->dma_dev, PAGE_SIZE, &hp->hblock_dvma, GFP_ATOMIC); err = -ENOMEM; if (!hp->happy_block) goto err_out_iounmap; /* Force check of the link first time we are brought up. */ hp->linkcheck = 0; /* Force timer state to 'asleep' with count of zero. */ hp->timer_state = asleep; hp->timer_ticks = 0; timer_setup(&hp->happy_timer, happy_meal_timer, 0); hp->dev = dev; dev->netdev_ops = &hme_netdev_ops; dev->watchdog_timeo = 5*HZ; dev->ethtool_ops = &hme_ethtool_ops; /* Happy Meal can do it all... */ dev->hw_features = NETIF_F_SG | NETIF_F_HW_CSUM; dev->features |= dev->hw_features | NETIF_F_RXCSUM; hp->irq = op->archdata.irqs[0]; #if defined(CONFIG_SBUS) && defined(CONFIG_PCI) /* Hook up SBUS register/descriptor accessors. */ hp->read_desc32 = sbus_hme_read_desc32; hp->write_txd = sbus_hme_write_txd; hp->write_rxd = sbus_hme_write_rxd; hp->read32 = sbus_hme_read32; hp->write32 = sbus_hme_write32; #endif /* Grrr, Happy Meal comes up by default not advertising * full duplex 100baseT capabilities, fix this. */ spin_lock_irq(&hp->happy_lock); happy_meal_set_initial_advertisement(hp); spin_unlock_irq(&hp->happy_lock); err = register_netdev(hp->dev); if (err) { dev_err(&op->dev, "Cannot register net device, aborting.\n"); goto err_out_free_coherent; } platform_set_drvdata(op, hp); if (qfe_slot != -1) netdev_info(dev, "Quattro HME slot %d (SBUS) 10/100baseT Ethernet %pM\n", qfe_slot, dev->dev_addr); else netdev_info(dev, "HAPPY MEAL (SBUS) 10/100baseT Ethernet %pM\n", dev->dev_addr); return 0; err_out_free_coherent: dma_free_coherent(hp->dma_dev, PAGE_SIZE, hp->happy_block, hp->hblock_dvma); err_out_iounmap: if (hp->gregs) of_iounmap(&op->resource[0], hp->gregs, GREG_REG_SIZE); if (hp->etxregs) of_iounmap(&op->resource[1], hp->etxregs, ETX_REG_SIZE); if (hp->erxregs) of_iounmap(&op->resource[2], hp->erxregs, ERX_REG_SIZE); if (hp->bigmacregs) of_iounmap(&op->resource[3], hp->bigmacregs, BMAC_REG_SIZE); if (hp->tcvregs) of_iounmap(&op->resource[4], hp->tcvregs, TCVR_REG_SIZE); if (qp) qp->happy_meals[qfe_slot] = NULL; err_out_free_netdev: free_netdev(dev); err_out: return err; } #endif #ifdef CONFIG_PCI #ifndef CONFIG_SPARC static int is_quattro_p(struct pci_dev *pdev) { struct pci_dev *busdev = pdev->bus->self; struct pci_dev *this_pdev; int n_hmes; if (busdev == NULL || busdev->vendor != PCI_VENDOR_ID_DEC || busdev->device != PCI_DEVICE_ID_DEC_21153) return 0; n_hmes = 0; list_for_each_entry(this_pdev, &pdev->bus->devices, bus_list) { if (this_pdev->vendor == PCI_VENDOR_ID_SUN && this_pdev->device == PCI_DEVICE_ID_SUN_HAPPYMEAL) n_hmes++; } if (n_hmes != 4) return 0; return 1; } /* Fetch MAC address from vital product data of PCI ROM. */ static int find_eth_addr_in_vpd(void __iomem *rom_base, int len, int index, unsigned char *dev_addr) { int this_offset; for (this_offset = 0x20; this_offset < len; this_offset++) { void __iomem *p = rom_base + this_offset; if (readb(p + 0) != 0x90 || readb(p + 1) != 0x00 || readb(p + 2) != 0x09 || readb(p + 3) != 0x4e || readb(p + 4) != 0x41 || readb(p + 5) != 0x06) continue; this_offset += 6; p += 6; if (index == 0) { int i; for (i = 0; i < 6; i++) dev_addr[i] = readb(p + i); return 1; } index--; } return 0; } static void get_hme_mac_nonsparc(struct pci_dev *pdev, unsigned char *dev_addr) { size_t size; void __iomem *p = pci_map_rom(pdev, &size); if (p) { int index = 0; int found; if (is_quattro_p(pdev)) index = PCI_SLOT(pdev->devfn); found = readb(p) == 0x55 && readb(p + 1) == 0xaa && find_eth_addr_in_vpd(p, (64 * 1024), index, dev_addr); pci_unmap_rom(pdev, p); if (found) return; } /* Sun MAC prefix then 3 random bytes. */ dev_addr[0] = 0x08; dev_addr[1] = 0x00; dev_addr[2] = 0x20; get_random_bytes(&dev_addr[3], 3); } #endif /* !(CONFIG_SPARC) */ static int happy_meal_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { struct quattro *qp = NULL; #ifdef CONFIG_SPARC struct device_node *dp; #endif struct happy_meal *hp; struct net_device *dev; void __iomem *hpreg_base; struct resource *hpreg_res; int i, qfe_slot = -1; char prom_name[64]; u8 addr[ETH_ALEN]; int err; /* Now make sure pci_dev cookie is there. */ #ifdef CONFIG_SPARC dp = pci_device_to_OF_node(pdev); snprintf(prom_name, sizeof(prom_name), "%pOFn", dp); #else if (is_quattro_p(pdev)) strcpy(prom_name, "SUNW,qfe"); else strcpy(prom_name, "SUNW,hme"); #endif err = pcim_enable_device(pdev); if (err) goto err_out; pci_set_master(pdev); if (!strcmp(prom_name, "SUNW,qfe") || !strcmp(prom_name, "qfe")) { qp = quattro_pci_find(pdev); if (IS_ERR(qp)) { err = PTR_ERR(qp); goto err_out; } for (qfe_slot = 0; qfe_slot < 4; qfe_slot++) if (!qp->happy_meals[qfe_slot]) break; if (qfe_slot == 4) goto err_out; } dev = devm_alloc_etherdev(&pdev->dev, sizeof(struct happy_meal)); if (!dev) { err = -ENOMEM; goto err_out; } SET_NETDEV_DEV(dev, &pdev->dev); hp = netdev_priv(dev); hp->happy_dev = pdev; hp->dma_dev = &pdev->dev; spin_lock_init(&hp->happy_lock); if (qp != NULL) { hp->qfe_parent = qp; hp->qfe_ent = qfe_slot; qp->happy_meals[qfe_slot] = dev; } err = -EINVAL; if ((pci_resource_flags(pdev, 0) & IORESOURCE_IO) != 0) { dev_err(&pdev->dev, "Cannot find proper PCI device base address.\n"); goto err_out_clear_quattro; } hpreg_res = devm_request_region(&pdev->dev, pci_resource_start(pdev, 0), pci_resource_len(pdev, 0), DRV_NAME); if (!hpreg_res) { err = -EBUSY; dev_err(&pdev->dev, "Cannot obtain PCI resources, aborting.\n"); goto err_out_clear_quattro; } hpreg_base = pcim_iomap(pdev, 0, 0x8000); if (!hpreg_base) { err = -ENOMEM; dev_err(&pdev->dev, "Unable to remap card memory.\n"); goto err_out_clear_quattro; } for (i = 0; i < 6; i++) { if (macaddr[i] != 0) break; } if (i < 6) { /* a mac address was given */ for (i = 0; i < 6; i++) addr[i] = macaddr[i]; eth_hw_addr_set(dev, addr); macaddr[5]++; } else { #ifdef CONFIG_SPARC const unsigned char *addr; int len; if (qfe_slot != -1 && (addr = of_get_property(dp, "local-mac-address", &len)) != NULL && len == 6) { eth_hw_addr_set(dev, addr); } else { eth_hw_addr_set(dev, idprom->id_ethaddr); } #else u8 addr[ETH_ALEN]; get_hme_mac_nonsparc(pdev, addr); eth_hw_addr_set(dev, addr); #endif } /* Layout registers. */ hp->gregs = (hpreg_base + 0x0000UL); hp->etxregs = (hpreg_base + 0x2000UL); hp->erxregs = (hpreg_base + 0x4000UL); hp->bigmacregs = (hpreg_base + 0x6000UL); hp->tcvregs = (hpreg_base + 0x7000UL); #ifdef CONFIG_SPARC hp->hm_revision = of_getintprop_default(dp, "hm-rev", 0xff); if (hp->hm_revision == 0xff) hp->hm_revision = 0xc0 | (pdev->revision & 0x0f); #else /* works with this on non-sparc hosts */ hp->hm_revision = 0x20; #endif /* Now enable the feature flags we can. */ if (hp->hm_revision == 0x20 || hp->hm_revision == 0x21) hp->happy_flags = HFLAG_20_21; else if (hp->hm_revision != 0xa0 && hp->hm_revision != 0xc0) hp->happy_flags = HFLAG_NOT_A0; if (qp != NULL) hp->happy_flags |= HFLAG_QUATTRO; /* And of course, indicate this is PCI. */ hp->happy_flags |= HFLAG_PCI; #ifdef CONFIG_SPARC /* Assume PCI happy meals can handle all burst sizes. */ hp->happy_bursts = DMA_BURSTBITS; #endif hp->happy_block = dmam_alloc_coherent(&pdev->dev, PAGE_SIZE, &hp->hblock_dvma, GFP_KERNEL); if (!hp->happy_block) { err = -ENOMEM; goto err_out_clear_quattro; } hp->linkcheck = 0; hp->timer_state = asleep; hp->timer_ticks = 0; timer_setup(&hp->happy_timer, happy_meal_timer, 0); hp->irq = pdev->irq; hp->dev = dev; dev->netdev_ops = &hme_netdev_ops; dev->watchdog_timeo = 5*HZ; dev->ethtool_ops = &hme_ethtool_ops; /* Happy Meal can do it all... */ dev->hw_features = NETIF_F_SG | NETIF_F_HW_CSUM; dev->features |= dev->hw_features | NETIF_F_RXCSUM; #if defined(CONFIG_SBUS) && defined(CONFIG_PCI) /* Hook up PCI register/descriptor accessors. */ hp->read_desc32 = pci_hme_read_desc32; hp->write_txd = pci_hme_write_txd; hp->write_rxd = pci_hme_write_rxd; hp->read32 = pci_hme_read32; hp->write32 = pci_hme_write32; #endif /* Grrr, Happy Meal comes up by default not advertising * full duplex 100baseT capabilities, fix this. */ spin_lock_irq(&hp->happy_lock); happy_meal_set_initial_advertisement(hp); spin_unlock_irq(&hp->happy_lock); err = devm_register_netdev(&pdev->dev, dev); if (err) { dev_err(&pdev->dev, "Cannot register net device, aborting.\n"); goto err_out_clear_quattro; } pci_set_drvdata(pdev, hp); if (!qfe_slot) { struct pci_dev *qpdev = qp->quattro_dev; prom_name[0] = 0; if (!strncmp(dev->name, "eth", 3)) { int i = simple_strtoul(dev->name + 3, NULL, 10); sprintf(prom_name, "-%d", i + 3); } netdev_info(dev, "%s: Quattro HME (PCI/CheerIO) 10/100baseT Ethernet bridge %04x.%04x\n", prom_name, qpdev->vendor, qpdev->device); } if (qfe_slot != -1) netdev_info(dev, "Quattro HME slot %d (PCI/CheerIO) 10/100baseT Ethernet %pM\n", qfe_slot, dev->dev_addr); else netdev_info(dev, "HAPPY MEAL (PCI/CheerIO) 10/100BaseT Ethernet %pM\n", dev->dev_addr); return 0; err_out_clear_quattro: if (qp != NULL) qp->happy_meals[qfe_slot] = NULL; err_out: return err; } static const struct pci_device_id happymeal_pci_ids[] = { { PCI_DEVICE(PCI_VENDOR_ID_SUN, PCI_DEVICE_ID_SUN_HAPPYMEAL) }, { } /* Terminating entry */ }; MODULE_DEVICE_TABLE(pci, happymeal_pci_ids); static struct pci_driver hme_pci_driver = { .name = "hme", .id_table = happymeal_pci_ids, .probe = happy_meal_pci_probe, }; static int __init happy_meal_pci_init(void) { return pci_register_driver(&hme_pci_driver); } static void happy_meal_pci_exit(void) { pci_unregister_driver(&hme_pci_driver); while (qfe_pci_list) { struct quattro *qfe = qfe_pci_list; struct quattro *next = qfe->next; kfree(qfe); qfe_pci_list = next; } } #endif #ifdef CONFIG_SBUS static const struct of_device_id hme_sbus_match[]; static int hme_sbus_probe(struct platform_device *op) { const struct of_device_id *match; struct device_node *dp = op->dev.of_node; const char *model = of_get_property(dp, "model", NULL); int is_qfe; match = of_match_device(hme_sbus_match, &op->dev); if (!match) return -EINVAL; is_qfe = (match->data != NULL); if (!is_qfe && model && !strcmp(model, "SUNW,sbus-qfe")) is_qfe = 1; return happy_meal_sbus_probe_one(op, is_qfe); } static int hme_sbus_remove(struct platform_device *op) { struct happy_meal *hp = platform_get_drvdata(op); struct net_device *net_dev = hp->dev; unregister_netdev(net_dev); /* XXX qfe parent interrupt... */ of_iounmap(&op->resource[0], hp->gregs, GREG_REG_SIZE); of_iounmap(&op->resource[1], hp->etxregs, ETX_REG_SIZE); of_iounmap(&op->resource[2], hp->erxregs, ERX_REG_SIZE); of_iounmap(&op->resource[3], hp->bigmacregs, BMAC_REG_SIZE); of_iounmap(&op->resource[4], hp->tcvregs, TCVR_REG_SIZE); dma_free_coherent(hp->dma_dev, PAGE_SIZE, hp->happy_block, hp->hblock_dvma); free_netdev(net_dev); return 0; } static const struct of_device_id hme_sbus_match[] = { { .name = "SUNW,hme", }, { .name = "SUNW,qfe", .data = (void *) 1, }, { .name = "qfe", .data = (void *) 1, }, {}, }; MODULE_DEVICE_TABLE(of, hme_sbus_match); static struct platform_driver hme_sbus_driver = { .driver = { .name = "hme", .of_match_table = hme_sbus_match, }, .probe = hme_sbus_probe, .remove = hme_sbus_remove, }; static int __init happy_meal_sbus_init(void) { int err; err = platform_driver_register(&hme_sbus_driver); if (!err) err = quattro_sbus_register_irqs(); return err; } static void happy_meal_sbus_exit(void) { platform_driver_unregister(&hme_sbus_driver); quattro_sbus_free_irqs(); while (qfe_sbus_list) { struct quattro *qfe = qfe_sbus_list; struct quattro *next = qfe->next; kfree(qfe); qfe_sbus_list = next; } } #endif static int __init happy_meal_probe(void) { int err = 0; #ifdef CONFIG_SBUS err = happy_meal_sbus_init(); #endif #ifdef CONFIG_PCI if (!err) { err = happy_meal_pci_init(); #ifdef CONFIG_SBUS if (err) happy_meal_sbus_exit(); #endif } #endif return err; } static void __exit happy_meal_exit(void) { #ifdef CONFIG_SBUS happy_meal_sbus_exit(); #endif #ifdef CONFIG_PCI happy_meal_pci_exit(); #endif } module_init(happy_meal_probe); module_exit(happy_meal_exit);
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