diff options
Diffstat (limited to 'drivers/net')
69 files changed, 4218 insertions, 438 deletions
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig index 43d03178064..f8a602caabc 100644 --- a/drivers/net/Kconfig +++ b/drivers/net/Kconfig @@ -5,6 +5,7 @@ menuconfig NETDEVICES default y if UML + depends on NET bool "Network device support" ---help--- You can say N here if you don't intend to connect your Linux box to @@ -838,6 +839,50 @@ config ULTRA32 <file:Documentation/networking/net-modules.txt>. The module will be called smc-ultra32. +config BFIN_MAC + tristate "Blackfin 536/537 on-chip mac support" + depends on NET_ETHERNET && (BF537 || BF536) && (!BF537_PORT_H) + select CRC32 + select BFIN_MAC_USE_L1 if DMA_UNCACHED_NONE + help + This is the driver for blackfin on-chip mac device. Say Y if you want it + compiled into the kernel. This driver is also available as a module + ( = code which can be inserted in and removed from the running kernel + whenever you want). The module will be called bfin_mac. + +config BFIN_MAC_USE_L1 + bool "Use L1 memory for rx/tx packets" + depends on BFIN_MAC && BF537 + default y + help + To get maximum network performace, you should use L1 memory as rx/tx buffers. + Say N here if you want to reserve L1 memory for other uses. + +config BFIN_TX_DESC_NUM + int "Number of transmit buffer packets" + depends on BFIN_MAC + range 6 10 if BFIN_MAC_USE_L1 + range 10 100 + default "10" + help + Set the number of buffer packets used in driver. + +config BFIN_RX_DESC_NUM + int "Number of receive buffer packets" + depends on BFIN_MAC + range 20 100 if BFIN_MAC_USE_L1 + range 20 800 + default "20" + help + Set the number of buffer packets used in driver. + +config BFIN_MAC_RMII + bool "RMII PHY Interface (EXPERIMENTAL)" + depends on BFIN_MAC && EXPERIMENTAL + default n + help + Use Reduced PHY MII Interface + config SMC9194 tristate "SMC 9194 support" depends on NET_VENDOR_SMC && (ISA || MAC && BROKEN) @@ -2486,6 +2531,18 @@ source "drivers/atm/Kconfig" source "drivers/s390/net/Kconfig" +config XEN_NETDEV_FRONTEND + tristate "Xen network device frontend driver" + depends on XEN + default y + help + The network device frontend driver allows the kernel to + access network devices exported exported by a virtual + machine containing a physical network device driver. The + frontend driver is intended for unprivileged guest domains; + if you are compiling a kernel for a Xen guest, you almost + certainly want to enable this. + config ISERIES_VETH tristate "iSeries Virtual Ethernet driver support" depends on PPC_ISERIES diff --git a/drivers/net/Makefile b/drivers/net/Makefile index eb4167622a6..336af0635df 100644 --- a/drivers/net/Makefile +++ b/drivers/net/Makefile @@ -127,6 +127,8 @@ obj-$(CONFIG_PPPOL2TP) += pppox.o pppol2tp.o obj-$(CONFIG_SLIP) += slip.o obj-$(CONFIG_SLHC) += slhc.o +obj-$(CONFIG_XEN_NETDEV_FRONTEND) += xen-netfront.o + obj-$(CONFIG_DUMMY) += dummy.o obj-$(CONFIG_IFB) += ifb.o obj-$(CONFIG_MACVLAN) += macvlan.o @@ -175,6 +177,7 @@ obj-$(CONFIG_ZORRO8390) += zorro8390.o obj-$(CONFIG_HPLANCE) += hplance.o 7990.o obj-$(CONFIG_MVME147_NET) += mvme147.o 7990.o obj-$(CONFIG_EQUALIZER) += eql.o +obj-$(CONFIG_LGUEST_GUEST) += lguest_net.o obj-$(CONFIG_MIPS_JAZZ_SONIC) += jazzsonic.o obj-$(CONFIG_MIPS_AU1X00_ENET) += au1000_eth.o obj-$(CONFIG_MIPS_SIM_NET) += mipsnet.o @@ -198,6 +201,7 @@ obj-$(CONFIG_S2IO) += s2io.o obj-$(CONFIG_MYRI10GE) += myri10ge/ obj-$(CONFIG_SMC91X) += smc91x.o obj-$(CONFIG_SMC911X) += smc911x.o +obj-$(CONFIG_BFIN_MAC) += bfin_mac.o obj-$(CONFIG_DM9000) += dm9000.o obj-$(CONFIG_FEC_8XX) += fec_8xx/ obj-$(CONFIG_PASEMI_MAC) += pasemi_mac.o diff --git a/drivers/net/arm/ether1.c b/drivers/net/arm/ether1.c index f21148e7b57..80f33b6d571 100644 --- a/drivers/net/arm/ether1.c +++ b/drivers/net/arm/ether1.c @@ -36,7 +36,6 @@ #include <linux/types.h> #include <linux/fcntl.h> #include <linux/interrupt.h> -#include <linux/ptrace.h> #include <linux/ioport.h> #include <linux/in.h> #include <linux/slab.h> @@ -75,7 +74,7 @@ static void ether1_timeout(struct net_device *dev); /* ------------------------------------------------------------------------- */ -static char version[] __initdata = "ether1 ethernet driver (c) 2000 Russell King v1.07\n"; +static char version[] __devinitdata = "ether1 ethernet driver (c) 2000 Russell King v1.07\n"; #define BUS_16 16 #define BUS_8 8 diff --git a/drivers/net/arm/ether3.c b/drivers/net/arm/ether3.c index da713500654..3805506a3ab 100644 --- a/drivers/net/arm/ether3.c +++ b/drivers/net/arm/ether3.c @@ -51,7 +51,6 @@ #include <linux/types.h> #include <linux/fcntl.h> #include <linux/interrupt.h> -#include <linux/ptrace.h> #include <linux/ioport.h> #include <linux/in.h> #include <linux/slab.h> @@ -69,7 +68,7 @@ #include <asm/ecard.h> #include <asm/io.h> -static char version[] __initdata = "ether3 ethernet driver (c) 1995-2000 R.M.King v1.17\n"; +static char version[] __devinitdata = "ether3 ethernet driver (c) 1995-2000 R.M.King v1.17\n"; #include "ether3.h" @@ -464,7 +463,7 @@ static void ether3_setmulticastlist(struct net_device *dev) if (dev->flags & IFF_PROMISC) { /* promiscuous mode */ priv(dev)->regs.config1 |= CFG1_RECVPROMISC; - } else if (dev->flags & IFF_ALLMULTI) { + } else if (dev->flags & IFF_ALLMULTI || dev->mc_count) { priv(dev)->regs.config1 |= CFG1_RECVSPECBRMULTI; } else priv(dev)->regs.config1 |= CFG1_RECVSPECBROAD; diff --git a/drivers/net/arm/etherh.c b/drivers/net/arm/etherh.c index 769ba69451f..0d37d9d1fd7 100644 --- a/drivers/net/arm/etherh.c +++ b/drivers/net/arm/etherh.c @@ -31,7 +31,6 @@ #include <linux/types.h> #include <linux/fcntl.h> #include <linux/interrupt.h> -#include <linux/ptrace.h> #include <linux/ioport.h> #include <linux/in.h> #include <linux/slab.h> diff --git a/drivers/net/b44.c b/drivers/net/b44.c index 96fb0ec905a..37f1b6ff5c1 100644 --- a/drivers/net/b44.c +++ b/drivers/net/b44.c @@ -1519,14 +1519,13 @@ static void b44_setup_pseudo_magicp(struct b44 *bp) u8 *pwol_pattern; u8 pwol_mask[B44_PMASK_SIZE]; - pwol_pattern = kmalloc(B44_PATTERN_SIZE, GFP_KERNEL); + pwol_pattern = kzalloc(B44_PATTERN_SIZE, GFP_KERNEL); if (!pwol_pattern) { printk(KERN_ERR PFX "Memory not available for WOL\n"); return; } /* Ipv4 magic packet pattern - pattern 0.*/ - memset(pwol_pattern, 0, B44_PATTERN_SIZE); memset(pwol_mask, 0, B44_PMASK_SIZE); plen0 = b44_magic_pattern(bp->dev->dev_addr, pwol_pattern, pwol_mask, B44_ETHIPV4UDP_HLEN); diff --git a/drivers/net/bfin_mac.c b/drivers/net/bfin_mac.c new file mode 100644 index 00000000000..9a08d656f1c --- /dev/null +++ b/drivers/net/bfin_mac.c @@ -0,0 +1,1009 @@ +/* + * File: drivers/net/bfin_mac.c + * Based on: + * Maintainer: + * Bryan Wu <bryan.wu@analog.com> + * + * Original author: + * Luke Yang <luke.yang@analog.com> + * + * Created: + * Description: + * + * Modified: + * Copyright 2004-2006 Analog Devices Inc. + * + * Bugs: Enter bugs at http://blackfin.uclinux.org/ + * + * This program is free software ; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation ; either version 2, or (at your option) + * any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY ; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program ; see the file COPYING. + * If not, write to the Free Software Foundation, + * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +#include <linux/init.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/slab.h> +#include <linux/delay.h> +#include <linux/timer.h> +#include <linux/errno.h> +#include <linux/irq.h> +#include <linux/io.h> +#include <linux/ioport.h> +#include <linux/crc32.h> +#include <linux/device.h> +#include <linux/spinlock.h> +#include <linux/ethtool.h> +#include <linux/mii.h> + +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> + +#include <linux/platform_device.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> + +#include <asm/dma.h> +#include <linux/dma-mapping.h> + +#include <asm/blackfin.h> +#include <asm/cacheflush.h> +#include <asm/portmux.h> + +#include "bfin_mac.h" + +#define DRV_NAME "bfin_mac" +#define DRV_VERSION "1.1" +#define DRV_AUTHOR "Bryan Wu, Luke Yang" +#define DRV_DESC "Blackfin BF53[67] on-chip Ethernet MAC driver" + +MODULE_AUTHOR(DRV_AUTHOR); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION(DRV_DESC); + +#if defined(CONFIG_BFIN_MAC_USE_L1) +# define bfin_mac_alloc(dma_handle, size) l1_data_sram_zalloc(size) +# define bfin_mac_free(dma_handle, ptr) l1_data_sram_free(ptr) +#else +# define bfin_mac_alloc(dma_handle, size) \ + dma_alloc_coherent(NULL, size, dma_handle, GFP_KERNEL) +# define bfin_mac_free(dma_handle, ptr) \ + dma_free_coherent(NULL, sizeof(*ptr), ptr, dma_handle) +#endif + +#define PKT_BUF_SZ 1580 + +#define MAX_TIMEOUT_CNT 500 + +/* pointers to maintain transmit list */ +static struct net_dma_desc_tx *tx_list_head; +static struct net_dma_desc_tx *tx_list_tail; +static struct net_dma_desc_rx *rx_list_head; +static struct net_dma_desc_rx *rx_list_tail; +static struct net_dma_desc_rx *current_rx_ptr; +static struct net_dma_desc_tx *current_tx_ptr; +static struct net_dma_desc_tx *tx_desc; +static struct net_dma_desc_rx *rx_desc; + +static void desc_list_free(void) +{ + struct net_dma_desc_rx *r; + struct net_dma_desc_tx *t; + int i; +#if !defined(CONFIG_BFIN_MAC_USE_L1) + dma_addr_t dma_handle = 0; +#endif + + if (tx_desc) { + t = tx_list_head; + for (i = 0; i < CONFIG_BFIN_TX_DESC_NUM; i++) { + if (t) { + if (t->skb) { + dev_kfree_skb(t->skb); + t->skb = NULL; + } + t = t->next; + } + } + bfin_mac_free(dma_handle, tx_desc); + } + + if (rx_desc) { + r = rx_list_head; + for (i = 0; i < CONFIG_BFIN_RX_DESC_NUM; i++) { + if (r) { + if (r->skb) { + dev_kfree_skb(r->skb); + r->skb = NULL; + } + r = r->next; + } + } + bfin_mac_free(dma_handle, rx_desc); + } +} + +static int desc_list_init(void) +{ + int i; + struct sk_buff *new_skb; +#if !defined(CONFIG_BFIN_MAC_USE_L1) + /* + * This dma_handle is useless in Blackfin dma_alloc_coherent(). + * The real dma handler is the return value of dma_alloc_coherent(). + */ + dma_addr_t dma_handle; +#endif + + tx_desc = bfin_mac_alloc(&dma_handle, + sizeof(struct net_dma_desc_tx) * + CONFIG_BFIN_TX_DESC_NUM); + if (tx_desc == NULL) + goto init_error; + + rx_desc = bfin_mac_alloc(&dma_handle, + sizeof(struct net_dma_desc_rx) * + CONFIG_BFIN_RX_DESC_NUM); + if (rx_desc == NULL) + goto init_error; + + /* init tx_list */ + tx_list_head = tx_list_tail = tx_desc; + + for (i = 0; i < CONFIG_BFIN_TX_DESC_NUM; i++) { + struct net_dma_desc_tx *t = tx_desc + i; + struct dma_descriptor *a = &(t->desc_a); + struct dma_descriptor *b = &(t->desc_b); + + /* + * disable DMA + * read from memory WNR = 0 + * wordsize is 32 bits + * 6 half words is desc size + * large desc flow + */ + a->config = WDSIZE_32 | NDSIZE_6 | DMAFLOW_LARGE; + a->start_addr = (unsigned long)t->packet; + a->x_count = 0; + a->next_dma_desc = b; + + /* + * enabled DMA + * write to memory WNR = 1 + * wordsize is 32 bits + * disable interrupt + * 6 half words is desc size + * large desc flow + */ + b->config = DMAEN | WNR | WDSIZE_32 | NDSIZE_6 | DMAFLOW_LARGE; + b->start_addr = (unsigned long)(&(t->status)); + b->x_count = 0; + + t->skb = NULL; + tx_list_tail->desc_b.next_dma_desc = a; + tx_list_tail->next = t; + tx_list_tail = t; + } + tx_list_tail->next = tx_list_head; /* tx_list is a circle */ + tx_list_tail->desc_b.next_dma_desc = &(tx_list_head->desc_a); + current_tx_ptr = tx_list_head; + + /* init rx_list */ + rx_list_head = rx_list_tail = rx_desc; + + for (i = 0; i < CONFIG_BFIN_RX_DESC_NUM; i++) { + struct net_dma_desc_rx *r = rx_desc + i; + struct dma_descriptor *a = &(r->desc_a); + struct dma_descriptor *b = &(r->desc_b); + + /* allocate a new skb for next time receive */ + new_skb = dev_alloc_skb(PKT_BUF_SZ + 2); + if (!new_skb) { + printk(KERN_NOTICE DRV_NAME + ": init: low on mem - packet dropped\n"); + goto init_error; + } + skb_reserve(new_skb, 2); + r->skb = new_skb; + + /* + * enabled DMA + * write to memory WNR = 1 + * wordsize is 32 bits + * disable interrupt + * 6 half words is desc size + * large desc flow + */ + a->config = DMAEN | WNR | WDSIZE_32 | NDSIZE_6 | DMAFLOW_LARGE; + /* since RXDWA is enabled */ + a->start_addr = (unsigned long)new_skb->data - 2; + a->x_count = 0; + a->next_dma_desc = b; + + /* + * enabled DMA + * write to memory WNR = 1 + * wordsize is 32 bits + * enable interrupt + * 6 half words is desc size + * large desc flow + */ + b->config = DMAEN | WNR | WDSIZE_32 | DI_EN | + NDSIZE_6 | DMAFLOW_LARGE; + b->start_addr = (unsigned long)(&(r->status)); + b->x_count = 0; + + rx_list_tail->desc_b.next_dma_desc = a; + rx_list_tail->next = r; + rx_list_tail = r; + } + rx_list_tail->next = rx_list_head; /* rx_list is a circle */ + rx_list_tail->desc_b.next_dma_desc = &(rx_list_head->desc_a); + current_rx_ptr = rx_list_head; + + return 0; + +init_error: + desc_list_free(); + printk(KERN_ERR DRV_NAME ": kmalloc failed\n"); + return -ENOMEM; +} + + +/*---PHY CONTROL AND CONFIGURATION-----------------------------------------*/ + +/* Set FER regs to MUX in Ethernet pins */ +static int setup_pin_mux(int action) +{ +#if defined(CONFIG_BFIN_MAC_RMII) + u16 pin_req[] = P_RMII0; +#else + u16 pin_req[] = P_MII0; +#endif + + if (action) { + if (peripheral_request_list(pin_req, DRV_NAME)) { + printk(KERN_ERR DRV_NAME + ": Requesting Peripherals failed\n"); + return -EFAULT; + } + } else + peripheral_free_list(pin_req); + + return 0; +} + +/* Wait until the previous MDC/MDIO transaction has completed */ +static void poll_mdc_done(void) +{ + int timeout_cnt = MAX_TIMEOUT_CNT; + + /* poll the STABUSY bit */ + while ((bfin_read_EMAC_STAADD()) & STABUSY) { + mdelay(10); + if (timeout_cnt-- < 0) { + printk(KERN_ERR DRV_NAME + ": wait MDC/MDIO transaction to complete timeout\n"); + break; + } + } +} + +/* Read an off-chip register in a PHY through the MDC/MDIO port */ +static u16 read_phy_reg(u16 PHYAddr, u16 RegAddr) +{ + poll_mdc_done(); + /* read mode */ + bfin_write_EMAC_STAADD(SET_PHYAD(PHYAddr) | + SET_REGAD(RegAddr) | + STABUSY); + poll_mdc_done(); + + return (u16) bfin_read_EMAC_STADAT(); +} + +/* Write an off-chip register in a PHY through the MDC/MDIO port */ +static void raw_write_phy_reg(u16 PHYAddr, u16 RegAddr, u32 Data) +{ + bfin_write_EMAC_STADAT(Data); + + /* write mode */ + bfin_write_EMAC_STAADD(SET_PHYAD(PHYAddr) | + SET_REGAD(RegAddr) | + STAOP | + STABUSY); + + poll_mdc_done(); +} + +static void write_phy_reg(u16 PHYAddr, u16 RegAddr, u32 Data) +{ + poll_mdc_done(); + raw_write_phy_reg(PHYAddr, RegAddr, Data); +} + +/* set up the phy */ +static void bf537mac_setphy(struct net_device *dev) +{ + u16 phydat; + struct bf537mac_local *lp = netdev_priv(dev); + + /* Program PHY registers */ + pr_debug("start setting up phy\n"); + + /* issue a reset */ + raw_write_phy_reg(lp->PhyAddr, PHYREG_MODECTL, 0x8000); + + /* wait half a second */ + msleep(500); + + phydat = read_phy_reg(lp->PhyAddr, PHYREG_MODECTL); + + /* advertise flow control supported */ + phydat = read_phy_reg(lp->PhyAddr, PHYREG_ANAR); + phydat |= (1 << 10); + write_phy_reg(lp->PhyAddr, PHYREG_ANAR, phydat); + + phydat = 0; + if (lp->Negotiate) + phydat |= 0x1000; /* enable auto negotiation */ + else { + if (lp->FullDuplex) + phydat |= (1 << 8); /* full duplex */ + else + phydat &= (~(1 << 8)); /* half duplex */ + + if (!lp->Port10) + phydat |= (1 << 13); /* 100 Mbps */ + else + phydat &= (~(1 << 13)); /* 10 Mbps */ + } + + if (lp->Loopback) + phydat |= (1 << 14); /* enable TX->RX loopback */ + + write_phy_reg(lp->PhyAddr, PHYREG_MODECTL, phydat); + msleep(500); + + phydat = read_phy_reg(lp->PhyAddr, PHYREG_MODECTL); + /* check for SMSC PHY */ + if ((read_phy_reg(lp->PhyAddr, PHYREG_PHYID1) == 0x7) && + ((read_phy_reg(lp->PhyAddr, PHYREG_PHYID2) & 0xfff0) == 0xC0A0)) { + /* + * we have SMSC PHY so reqest interrupt + * on link down condition + */ + + /* enable interrupts */ + write_phy_reg(lp->PhyAddr, 30, 0x0ff); + } +} + +/**************************************************************************/ +void setup_system_regs(struct net_device *dev) +{ + int phyaddr; + unsigned short sysctl, phydat; + u32 opmode; + struct bf537mac_local *lp = netdev_priv(dev); + int count = 0; + + phyaddr = lp->PhyAddr; + + /* Enable PHY output */ + if (!(bfin_read_VR_CTL() & PHYCLKOE)) + bfin_write_VR_CTL(bfin_read_VR_CTL() | PHYCLKOE); + + /* MDC = 2.5 MHz */ + sysctl = SET_MDCDIV(24); + /* Odd word alignment for Receive Frame DMA word */ + /* Configure checksum support and rcve frame word alignment */ +#if defined(BFIN_MAC_CSUM_OFFLOAD) + sysctl |= RXDWA | RXCKS; +#else + sysctl |= RXDWA; +#endif + bfin_write_EMAC_SYSCTL(sysctl); + /* auto negotiation on */ + /* full duplex */ + /* 100 Mbps */ + phydat = PHY_ANEG_EN | PHY_DUPLEX | PHY_SPD_SET; + write_phy_reg(phyaddr, PHYREG_MODECTL, phydat); + + /* test if full duplex supported */ + do { + msleep(100); + phydat = read_phy_reg(phyaddr, PHYREG_MODESTAT); + if (count > 30) { + printk(KERN_NOTICE DRV_NAME ": Link is down\n"); + printk(KERN_NOTICE DRV_NAME + "please check your network connection\n"); + break; + } + count++; + } while (!(phydat & 0x0004)); + + phydat = read_phy_reg(phyaddr, PHYREG_ANLPAR); + + if ((phydat & 0x0100) || (phydat & 0x0040)) { + opmode = FDMODE; + } else { + opmode = 0; + printk(KERN_INFO DRV_NAME + ": Network is set to half duplex\n"); + } + +#if defined(CONFIG_BFIN_MAC_RMII) + opmode |= RMII; /* For Now only 100MBit are supported */ +#endif + + bfin_write_EMAC_OPMODE(opmode); + + bfin_write_EMAC_MMC_CTL(RSTC | CROLL); + + /* Initialize the TX DMA channel registers */ + bfin_write_DMA2_X_COUNT(0); + bfin_write_DMA2_X_MODIFY(4); + bfin_write_DMA2_Y_COUNT(0); + bfin_write_DMA2_Y_MODIFY(0); + + /* Initialize the RX DMA channel registers */ + bfin_write_DMA1_X_COUNT(0); + bfin_write_DMA1_X_MODIFY(4); + bfin_write_DMA1_Y_COUNT(0); + bfin_write_DMA1_Y_MODIFY(0); +} + +void setup_mac_addr(u8 * mac_addr) +{ + u32 addr_low = le32_to_cpu(*(__le32 *) & mac_addr[0]); + u16 addr_hi = le16_to_cpu(*(__le16 *) & mac_addr[4]); + + /* this depends on a little-endian machine */ + bfin_write_EMAC_ADDRLO(addr_low); + bfin_write_EMAC_ADDRHI(addr_hi); +} + +static void adjust_tx_list(void) +{ + int timeout_cnt = MAX_TIMEOUT_CNT; + + if (tx_list_head->status.status_word != 0 + && current_tx_ptr != tx_list_head) { + goto adjust_head; /* released something, just return; */ + } + + /* + * if nothing released, check wait condition + * current's next can not be the head, + * otherwise the dma will not stop as we want + */ + if (current_tx_ptr->next->next == tx_list_head) { + while (tx_list_head->status.status_word == 0) { + mdelay(10); + if (tx_list_head->status.status_word != 0 + || !(bfin_read_DMA2_IRQ_STATUS() & 0x08)) { + goto adjust_head; + } + if (timeout_cnt-- < 0) { + printk(KERN_ERR DRV_NAME + ": wait for adjust tx list head timeout\n"); + break; + } + } + if (tx_list_head->status.status_word != 0) { + goto adjust_head; + } + } + + return; + +adjust_head: + do { + tx_list_head->desc_a.config &= ~DMAEN; + tx_list_head->status.status_word = 0; + if (tx_list_head->skb) { + dev_kfree_skb(tx_list_head->skb); + tx_list_head->skb = NULL; + } else { + printk(KERN_ERR DRV_NAME + ": no sk_buff in a transmitted frame!\n"); + } + tx_list_head = tx_list_head->next; + } while (tx_list_head->status.status_word != 0 + && current_tx_ptr != tx_list_head); + return; + +} + +static int bf537mac_hard_start_xmit(struct sk_buff *skb, + struct net_device *dev) +{ + struct bf537mac_local *lp = netdev_priv(dev); + unsigned int data; + + current_tx_ptr->skb = skb; + + /* + * Is skb->data always 16-bit aligned? + * Do we need to memcpy((char *)(tail->packet + 2), skb->data, len)? + */ + if ((((unsigned int)(skb->data)) & 0x02) == 2) { + /* move skb->data to current_tx_ptr payload */ + data = (unsigned int)(skb->data) - 2; + *((unsigned short *)data) = (unsigned short)(skb->len); + current_tx_ptr->desc_a.start_addr = (unsigned long)data; + /* this is important! */ + blackfin_dcache_flush_range(data, (data + (skb->len)) + 2); + + } else { + *((unsigned short *)(current_tx_ptr->packet)) = + (unsigned short)(skb->len); + memcpy((char *)(current_tx_ptr->packet + 2), skb->data, + (skb->len)); + current_tx_ptr->desc_a.start_addr = + (unsigned long)current_tx_ptr->packet; + if (current_tx_ptr->status.status_word != 0) + current_tx_ptr->status.status_word = 0; + blackfin_dcache_flush_range((unsigned int)current_tx_ptr-> + packet, + (unsigned int)(current_tx_ptr-> + packet + skb->len) + + 2); + } + + /* enable this packet's dma */ + current_tx_ptr->desc_a.config |= DMAEN; + + /* tx dma is running, just return */ + if (bfin_read_DMA2_IRQ_STATUS() & 0x08) + goto out; + + /* tx dma is not running */ + bfin_write_DMA2_NEXT_DESC_PTR(&(current_tx_ptr->desc_a)); + /* dma enabled, read from memory, size is 6 */ + bfin_write_DMA2_CONFIG(current_tx_ptr->desc_a.config); + /* Turn on the EMAC tx */ + bfin_write_EMAC_OPMODE(bfin_read_EMAC_OPMODE() | TE); + +out: + adjust_tx_list(); + current_tx_ptr = current_tx_ptr->next; + dev->trans_start = jiffies; + lp->stats.tx_packets++; + lp->stats.tx_bytes += (skb->len); + return 0; +} + +static void bf537mac_rx(struct net_device *dev) +{ + struct sk_buff *skb, *new_skb; + struct bf537mac_local *lp = netdev_priv(dev); + unsigned short len; + + /* allocate a new skb for next time receive */ + skb = current_rx_ptr->skb; + new_skb = dev_alloc_skb(PKT_BUF_SZ + 2); + if (!new_skb) { + printk(KERN_NOTICE DRV_NAME + ": rx: low on mem - packet dropped\n"); + lp->stats.rx_dropped++; + goto out; + } + /* reserve 2 bytes for RXDWA padding */ + skb_reserve(new_skb, 2); + current_rx_ptr->skb = new_skb; + current_rx_ptr->desc_a.start_addr = (unsigned long)new_skb->data - 2; + + len = (unsigned short)((current_rx_ptr->status.status_word) & RX_FRLEN); + skb_put(skb, len); + blackfin_dcache_invalidate_range((unsigned long)skb->head, + (unsigned long)skb->tail); + + dev->last_rx = jiffies; + skb->dev = dev; + skb->protocol = eth_type_trans(skb, dev); +#if defined(BFIN_MAC_CSUM_OFFLOAD) + skb->csum = current_rx_ptr->status.ip_payload_csum; + skb->ip_summed = CHECKSUM_PARTIAL; +#endif + + netif_rx(skb); + lp->stats.rx_packets++; + lp->stats.rx_bytes += len; + current_rx_ptr->status.status_word = 0x00000000; + current_rx_ptr = current_rx_ptr->next; + +out: + return; +} + +/* interrupt routine to handle rx and error signal */ +static irqreturn_t bf537mac_interrupt(int irq, void *dev_id) +{ + struct net_device *dev = dev_id; + int number = 0; + +get_one_packet: + if (current_rx_ptr->status.status_word == 0) { + /* no more new packet received */ + if (number == 0) { + if (current_rx_ptr->next->status.status_word != 0) { + current_rx_ptr = current_rx_ptr->next; + goto real_rx; + } + } + bfin_write_DMA1_IRQ_STATUS(bfin_read_DMA1_IRQ_STATUS() | + DMA_DONE | DMA_ERR); + return IRQ_HANDLED; + } + +real_rx: + bf537mac_rx(dev); + number++; + goto get_one_packet; +} + +#ifdef CONFIG_NET_POLL_CONTROLLER +static void bf537mac_poll(struct net_device *dev) +{ + disable_irq(IRQ_MAC_RX); + bf537mac_interrupt(IRQ_MAC_RX, dev); + enable_irq(IRQ_MAC_RX); +} +#endif /* CONFIG_NET_POLL_CONTROLLER */ + +static void bf537mac_reset(void) +{ + unsigned int opmode; + + opmode = bfin_read_EMAC_OPMODE(); + opmode &= (~RE); + opmode &= (~TE); + /* Turn off the EMAC */ + bfin_write_EMAC_OPMODE(opmode); +} + +/* + * Enable Interrupts, Receive, and Transmit + */ +static int bf537mac_enable(struct net_device *dev) +{ + u32 opmode; + + pr_debug("%s: %s\n", dev->name, __FUNCTION__); + + /* Set RX DMA */ + bfin_write_DMA1_NEXT_DESC_PTR(&(rx_list_head->desc_a)); + bfin_write_DMA1_CONFIG(rx_list_head->desc_a.config); + + /* Wait MII done */ + poll_mdc_done(); + + /* We enable only RX here */ + /* ASTP : Enable Automatic Pad Stripping + PR : Promiscuous Mode for test + PSF : Receive frames with total length less than 64 bytes. + FDMODE : Full Duplex Mode + LB : Internal Loopback for test + RE : Receiver Enable */ + opmode = bfin_read_EMAC_OPMODE(); + if (opmode & FDMODE) + opmode |= PSF; + else + opmode |= DRO | DC | PSF; + opmode |= RE; + +#if defined(CONFIG_BFIN_MAC_RMII) + opmode |= RMII; /* For Now only 100MBit are supported */ +#ifdef CONFIG_BF_REV_0_2 + opmode |= TE; +#endif +#endif + /* Turn on the EMAC rx */ + bfin_write_EMAC_OPMODE(opmode); + + return 0; +} + +/* Our watchdog timed out. Called by the networking layer */ +static void bf537mac_timeout(struct net_device *dev) +{ + pr_debug("%s: %s\n", dev->name, __FUNCTION__); + + bf537mac_reset(); + + /* reset tx queue */ + tx_list_tail = tx_list_head->next; + + bf537mac_enable(dev); + + /* We can accept TX packets again */ + dev->trans_start = jiffies; + netif_wake_queue(dev); +} + +/* + * Get the current statistics. + * This may be called with the card open or closed. + */ +static struct net_device_stats *bf537mac_query_statistics(struct net_device + *dev) +{ + struct bf537mac_local *lp = netdev_priv(dev); + + pr_debug("%s: %s\n", dev->name, __FUNCTION__); + + return &lp->stats; +} + +/* + * This routine will, depending on the values passed to it, + * either make it accept multicast packets, go into + * promiscuous mode (for TCPDUMP and cousins) or accept + * a select set of multicast packets + */ +static void bf537mac_set_multicast_list(struct net_device *dev) +{ + u32 sysctl; + + if (dev->flags & IFF_PROMISC) { + printk(KERN_INFO "%s: set to promisc mode\n", dev->name); + sysctl = bfin_read_EMAC_OPMODE(); + sysctl |= RAF; + bfin_write_EMAC_OPMODE(sysctl); + } else if (dev->flags & IFF_ALLMULTI || dev->mc_count) { + /* accept all multicast */ + sysctl = bfin_read_EMAC_OPMODE(); + sysctl |= PAM; + bfin_write_EMAC_OPMODE(sysctl); + } else { + /* clear promisc or multicast mode */ + sysctl = bfin_read_EMAC_OPMODE(); + sysctl &= ~(RAF | PAM); + bfin_write_EMAC_OPMODE(sysctl); + } +} + +/* + * this puts the device in an inactive state + */ +static void bf537mac_shutdown(struct net_device *dev) +{ + /* Turn off the EMAC */ + bfin_write_EMAC_OPMODE(0x00000000); + /* Turn off the EMAC RX DMA */ + bfin_write_DMA1_CONFIG(0x0000); + bfin_write_DMA2_CONFIG(0x0000); +} + +/* + * Open and Initialize the interface + * + * Set up everything, reset the card, etc.. + */ +static int bf537mac_open(struct net_device *dev) +{ + pr_debug("%s: %s\n", dev->name, __FUNCTION__); + + /* + * Check that the address is valid. If its not, refuse + * to bring the device up. The user must specify an + * address using ifconfig eth0 hw ether xx:xx:xx:xx:xx:xx + */ + if (!is_valid_ether_addr(dev->dev_addr)) { + printk(KERN_WARNING DRV_NAME ": no valid ethernet hw addr\n"); + return -EINVAL; + } + + /* initial rx and tx list */ + desc_list_init(); + + bf537mac_setphy(dev); + setup_system_regs(dev); + bf537mac_reset(); + bf537mac_enable(dev); + + pr_debug("hardware init finished\n"); + netif_start_queue(dev); + netif_carrier_on(dev); + + return 0; +} + +/* + * + * this makes the board clean up everything that it can + * and not talk to the outside world. Caused by + * an 'ifconfig ethX down' + */ +static int bf537mac_close(struct net_device *dev) +{ + pr_debug("%s: %s\n", dev->name, __FUNCTION__); + + netif_stop_queue(dev); + netif_carrier_off(dev); + + /* clear everything */ + bf537mac_shutdown(dev); + + /* free the rx/tx buffers */ + desc_list_free(); + + return 0; +} + +static int __init bf537mac_probe(struct net_device *dev) +{ + struct bf537mac_local *lp = netdev_priv(dev); + int retval; + + /* Grab the MAC address in the MAC */ + *(__le32 *) (&(dev->dev_addr[0])) = cpu_to_le32(bfin_read_EMAC_ADDRLO()); + *(__le16 *) (&(dev->dev_addr[4])) = cpu_to_le16((u16) bfin_read_EMAC_ADDRHI()); + + /* probe mac */ + /*todo: how to proble? which is revision_register */ + bfin_write_EMAC_ADDRLO(0x12345678); + if (bfin_read_EMAC_ADDRLO() != 0x12345678) { + pr_debug("can't detect bf537 mac!\n"); + retval = -ENODEV; + goto err_out; + } + + /* set the GPIO pins to Ethernet mode */ + retval = setup_pin_mux(1); + + if (retval) + return retval; + + /*Is it valid? (Did bootloader initialize it?) */ + if (!is_valid_ether_addr(dev->dev_addr)) { + /* Grab the MAC from the board somehow - this is done in the + arch/blackfin/mach-bf537/boards/eth_mac.c */ + get_bf537_ether_addr(dev->dev_addr); + } + + /* If still not valid, get a random one */ + if (!is_valid_ether_addr(dev->dev_addr)) { + random_ether_addr(dev->dev_addr); + } + + setup_mac_addr(dev->dev_addr); + + /* Fill in the fields of the device structure with ethernet values. */ + ether_setup(dev); + + dev->open = bf537mac_open; + dev->stop = bf537mac_close; + dev->hard_start_xmit = bf537mac_hard_start_xmit; + dev->tx_timeout = bf537mac_timeout; + dev->get_stats = bf537mac_query_statistics; + dev->set_multicast_list = bf537mac_set_multicast_list; +#ifdef CONFIG_NET_POLL_CONTROLLER + dev->poll_controller = bf537mac_poll; +#endif + + /* fill in some of the fields */ + lp->version = 1; + lp->PhyAddr = 0x01; + lp->CLKIN = 25; + lp->FullDuplex = 0; + lp->Negotiate = 1; + lp->FlowControl = 0; + spin_lock_init(&lp->lock); + + /* now, enable interrupts */ + /* register irq handler */ + if (request_irq + (IRQ_MAC_RX, bf537mac_interrupt, IRQF_DISABLED | IRQF_SHARED, + "BFIN537_MAC_RX", dev)) { + printk(KERN_WARNING DRV_NAME + ": Unable to attach BlackFin MAC RX interrupt\n"); + return -EBUSY; + } + + /* Enable PHY output early */ + if (!(bfin_read_VR_CTL() & PHYCLKOE)) + bfin_write_VR_CTL(bfin_read_VR_CTL() | PHYCLKOE); + + retval = register_netdev(dev); + if (retval == 0) { + /* now, print out the card info, in a short format.. */ + printk(KERN_INFO "%s: Version %s, %s\n", + DRV_NAME, DRV_VERSION, DRV_DESC); + } + +err_out: + return retval; +} + +static int bfin_mac_probe(struct platform_device *pdev) +{ + struct net_device *ndev; + + ndev = alloc_etherdev(sizeof(struct bf537mac_local)); + if (!ndev) { + printk(KERN_WARNING DRV_NAME ": could not allocate device\n"); + return -ENOMEM; + } + + SET_MODULE_OWNER(ndev); + SET_NETDEV_DEV(ndev, &pdev->dev); + + platform_set_drvdata(pdev, ndev); + + if (bf537mac_probe(ndev) != 0) { + platform_set_drvdata(pdev, NULL); + free_netdev(ndev); + printk(KERN_WARNING DRV_NAME ": not found\n"); + return -ENODEV; + } + + return 0; +} + +static int bfin_mac_remove(struct platform_device *pdev) +{ + struct net_device *ndev = platform_get_drvdata(pdev); + + platform_set_drvdata(pdev, NULL); + + unregister_netdev(ndev); + + free_irq(IRQ_MAC_RX, ndev); + + free_netdev(ndev); + + setup_pin_mux(0); + + return 0; +} + +static int bfin_mac_suspend(struct platform_device *pdev, pm_message_t state) +{ + return 0; +} + +static int bfin_mac_resume(struct platform_device *pdev) +{ + return 0; +} + +static struct platform_driver bfin_mac_driver = { + .probe = bfin_mac_probe, + .remove = bfin_mac_remove, + .resume = bfin_mac_resume, + .suspend = bfin_mac_suspend, + .driver = { + .name = DRV_NAME, + }, +}; + +static int __init bfin_mac_init(void) +{ + return platform_driver_register(&bfin_mac_driver); +} + +module_init(bfin_mac_init); + +static void __exit bfin_mac_cleanup(void) +{ + platform_driver_unregister(&bfin_mac_driver); +} + +module_exit(bfin_mac_cleanup); diff --git a/drivers/net/bfin_mac.h b/drivers/net/bfin_mac.h new file mode 100644 index 00000000000..af87189b85f --- /dev/null +++ b/drivers/net/bfin_mac.h @@ -0,0 +1,132 @@ +/* + * File: drivers/net/bfin_mac.c + * Based on: + * Maintainer: + * Bryan Wu <bryan.wu@analog.com> + * + * Original author: + * Luke Yang <luke.yang@analog.com> + * + * Created: + * Description: + * + * Modified: + * Copyright 2004-2006 Analog Devices Inc. + * + * Bugs: Enter bugs at http://blackfin.uclinux.org/ + * + * This program is free software ; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation ; either version 2, or (at your option) + * any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY ; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program ; see the file COPYING. + * If not, write to the Free Software Foundation, + * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +/* + * PHY REGISTER NAMES + */ +#define PHYREG_MODECTL 0x0000 +#define PHYREG_MODESTAT 0x0001 +#define PHYREG_PHYID1 0x0002 +#define PHYREG_PHYID2 0x0003 +#define PHYREG_ANAR 0x0004 +#define PHYREG_ANLPAR 0x0005 +#define PHYREG_ANER 0x0006 +#define PHYREG_NSR 0x0010 +#define PHYREG_LBREMR 0x0011 +#define PHYREG_REC 0x0012 +#define PHYREG_10CFG 0x0013 +#define PHYREG_PHY1_1 0x0014 +#define PHYREG_PHY1_2 0x0015 +#define PHYREG_PHY2 0x0016 +#define PHYREG_TW_1 0x0017 +#define PHYREG_TW_2 0x0018 +#define PHYREG_TEST 0x0019 + +#define PHY_RESET 0x8000 +#define PHY_ANEG_EN 0x1000 +#define PHY_DUPLEX 0x0100 +#define PHY_SPD_SET 0x2000 + +#define BFIN_MAC_CSUM_OFFLOAD + +struct dma_descriptor { + struct dma_descriptor *next_dma_desc; + unsigned long start_addr; + unsigned short config; + unsigned short x_count; +}; + +struct status_area_rx { +#if defined(BFIN_MAC_CSUM_OFFLOAD) + unsigned short ip_hdr_csum; /* ip header checksum */ + /* ip payload(udp or tcp or others) checksum */ + unsigned short ip_payload_csum; +#endif + unsigned long status_word; /* the frame status word */ +}; + +struct status_area_tx { + unsigned long status_word; /* the frame status word */ +}; + +/* use two descriptors for a packet */ +struct net_dma_desc_rx { + struct net_dma_desc_rx *next; + struct sk_buff *skb; + struct dma_descriptor desc_a; + struct dma_descriptor desc_b; + struct status_area_rx status; +}; + +/* use two descriptors for a packet */ +struct net_dma_desc_tx { + struct net_dma_desc_tx *next; + struct sk_buff *skb; + struct dma_descriptor desc_a; + struct dma_descriptor desc_b; + unsigned char packet[1560]; + struct status_area_tx status; +}; + +struct bf537mac_local { + /* + * these are things that the kernel wants me to keep, so users + * can find out semi-useless statistics of how well the card is + * performing + */ + struct net_device_stats stats; + + int version; + + int FlowEnabled; /* record if data flow is active */ + int EtherIntIVG; /* IVG for the ethernet interrupt */ + int RXIVG; /* IVG for the RX completion */ + int TXIVG; /* IVG for the TX completion */ + int PhyAddr; /* PHY address */ + int OpMode; /* set these bits n the OPMODE regs */ + int Port10; /* set port speed to 10 Mbit/s */ + int GenChksums; /* IP checksums to be calculated */ + int NoRcveLnth; /* dont insert recv length at start of buffer */ + int StripPads; /* remove trailing pad bytes */ + int FullDuplex; /* set full duplex mode */ + int Negotiate; /* enable auto negotiation */ + int Loopback; /* loopback at the PHY */ + int Cache; /* Buffers may be cached */ + int FlowControl; /* flow control active */ + int CLKIN; /* clock in value in MHZ */ + unsigned short IntMask; /* interrupt mask */ + unsigned char Mac[6]; /* MAC address of the board */ + spinlock_t lock; +}; + +extern void get_bf537_ether_addr(char *addr); diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c index d23861c8658..a729da061bb 100644 --- a/drivers/net/bnx2.c +++ b/drivers/net/bnx2.c @@ -54,8 +54,8 @@ #define DRV_MODULE_NAME "bnx2" #define PFX DRV_MODULE_NAME ": " -#define DRV_MODULE_VERSION "1.6.2" -#define DRV_MODULE_RELDATE "July 6, 2007" +#define DRV_MODULE_VERSION "1.6.3" +#define DRV_MODULE_RELDATE "July 16, 2007" #define RUN_AT(x) (jiffies + (x)) @@ -126,91 +126,102 @@ static struct pci_device_id bnx2_pci_tbl[] = { static struct flash_spec flash_table[] = { +#define BUFFERED_FLAGS (BNX2_NV_BUFFERED | BNX2_NV_TRANSLATE) +#define NONBUFFERED_FLAGS (BNX2_NV_WREN) /* Slow EEPROM */ {0x00000000, 0x40830380, 0x009f0081, 0xa184a053, 0xaf000400, - 1, SEEPROM_PAGE_BITS, SEEPROM_PAGE_SIZE, + BUFFERED_FLAGS, SEEPROM_PAGE_BITS, SEEPROM_PAGE_SIZE, SEEPROM_BYTE_ADDR_MASK, SEEPROM_TOTAL_SIZE, "EEPROM - slow"}, /* Expansion entry 0001 */ {0x08000002, 0x4b808201, 0x00050081, 0x03840253, 0xaf020406, - 0, SAIFUN_FLASH_PAGE_BITS, SAIFUN_FLASH_PAGE_SIZE, + NONBUFFERED_FLAGS, SAIFUN_FLASH_PAGE_BITS, SAIFUN_FLASH_PAGE_SIZE, SAIFUN_FLASH_BYTE_ADDR_MASK, 0, "Entry 0001"}, /* Saifun SA25F010 (non-buffered flash) */ /* strap, cfg1, & write1 need updates */ {0x04000001, 0x47808201, 0x00050081, 0x03840253, 0xaf020406, - 0, SAIFUN_FLASH_PAGE_BITS, SAIFUN_FLASH_PAGE_SIZE, + NONBUFFERED_FLAGS, SAIFUN_FLASH_PAGE_BITS, SAIFUN_FLASH_PAGE_SIZE, SAIFUN_FLASH_BYTE_ADDR_MASK, SAIFUN_FLASH_BASE_TOTAL_SIZE*2, "Non-buffered flash (128kB)"}, /* Saifun SA25F020 (non-buffered flash) */ /* strap, cfg1, & write1 need updates */ {0x0c000003, 0x4f808201, 0x00050081, 0x03840253, 0xaf020406, - 0, SAIFUN_FLASH_PAGE_BITS, SAIFUN_FLASH_PAGE_SIZE, + NONBUFFERED_FLAGS, SAIFUN_FLASH_PAGE_BITS, SAIFUN_FLASH_PAGE_SIZE, SAIFUN_FLASH_BYTE_ADDR_MASK, SAIFUN_FLASH_BASE_TOTAL_SIZE*4, "Non-buffered flash (256kB)"}, /* Expansion entry 0100 */ {0x11000000, 0x53808201, 0x00050081, 0x03840253, 0xaf020406, - 0, SAIFUN_FLASH_PAGE_BITS, SAIFUN_FLASH_PAGE_SIZE, + NONBUFFERED_FLAGS, SAIFUN_FLASH_PAGE_BITS, SAIFUN_FLASH_PAGE_SIZE, SAIFUN_FLASH_BYTE_ADDR_MASK, 0, "Entry 0100"}, /* Entry 0101: ST M45PE10 (non-buffered flash, TetonII B0) */ {0x19000002, 0x5b808201, 0x000500db, 0x03840253, 0xaf020406, - 0, ST_MICRO_FLASH_PAGE_BITS, ST_MICRO_FLASH_PAGE_SIZE, + NONBUFFERED_FLAGS, ST_MICRO_FLASH_PAGE_BITS, ST_MICRO_FLASH_PAGE_SIZE, ST_MICRO_FLASH_BYTE_ADDR_MASK, ST_MICRO_FLASH_BASE_TOTAL_SIZE*2, "Entry 0101: ST M45PE10 (128kB non-bufferred)"}, /* Entry 0110: ST M45PE20 (non-buffered flash)*/ {0x15000001, 0x57808201, 0x000500db, 0x03840253, 0xaf020406, - 0, ST_MICRO_FLASH_PAGE_BITS, ST_MICRO_FLASH_PAGE_SIZE, + NONBUFFERED_FLAGS, ST_MICRO_FLASH_PAGE_BITS, ST_MICRO_FLASH_PAGE_SIZE, ST_MICRO_FLASH_BYTE_ADDR_MASK, ST_MICRO_FLASH_BASE_TOTAL_SIZE*4, "Entry 0110: ST M45PE20 (256kB non-bufferred)"}, /* Saifun SA25F005 (non-buffered flash) */ /* strap, cfg1, & write1 need updates */ {0x1d000003, 0x5f808201, 0x00050081, 0x03840253, 0xaf020406, - 0, SAIFUN_FLASH_PAGE_BITS, SAIFUN_FLASH_PAGE_SIZE, + NONBUFFERED_FLAGS, SAIFUN_FLASH_PAGE_BITS, SAIFUN_FLASH_PAGE_SIZE, SAIFUN_FLASH_BYTE_ADDR_MASK, SAIFUN_FLASH_BASE_TOTAL_SIZE, "Non-buffered flash (64kB)"}, /* Fast EEPROM */ {0x22000000, 0x62808380, 0x009f0081, 0xa184a053, 0xaf000400, - 1, SEEPROM_PAGE_BITS, SEEPROM_PAGE_SIZE, + BUFFERED_FLAGS, SEEPROM_PAGE_BITS, SEEPROM_PAGE_SIZE, SEEPROM_BYTE_ADDR_MASK, SEEPROM_TOTAL_SIZE, "EEPROM - fast"}, /* Expansion entry 1001 */ {0x2a000002, 0x6b808201, 0x00050081, 0x03840253, 0xaf020406, - 0, SAIFUN_FLASH_PAGE_BITS, SAIFUN_FLASH_PAGE_SIZE, + NONBUFFERED_FLAGS, SAIFUN_FLASH_PAGE_BITS, SAIFUN_FLASH_PAGE_SIZE, SAIFUN_FLASH_BYTE_ADDR_MASK, 0, "Entry 1001"}, /* Expansion entry 1010 */ {0x26000001, 0x67808201, 0x00050081, 0x03840253, 0xaf020406, - 0, SAIFUN_FLASH_PAGE_BITS, SAIFUN_FLASH_PAGE_SIZE, + NONBUFFERED_FLAGS, SAIFUN_FLASH_PAGE_BITS, SAIFUN_FLASH_PAGE_SIZE, SAIFUN_FLASH_BYTE_ADDR_MASK, 0, "Entry 1010"}, /* ATMEL AT45DB011B (buffered flash) */ {0x2e000003, 0x6e808273, 0x00570081, 0x68848353, 0xaf000400, - 1, BUFFERED_FLASH_PAGE_BITS, BUFFERED_FLASH_PAGE_SIZE, + BUFFERED_FLAGS, BUFFERED_FLASH_PAGE_BITS, BUFFERED_FLASH_PAGE_SIZE, BUFFERED_FLASH_BYTE_ADDR_MASK, BUFFERED_FLASH_TOTAL_SIZE, "Buffered flash (128kB)"}, /* Expansion entry 1100 */ {0x33000000, 0x73808201, 0x00050081, 0x03840253, 0xaf020406, - 0, SAIFUN_FLASH_PAGE_BITS, SAIFUN_FLASH_PAGE_SIZE, + NONBUFFERED_FLAGS, SAIFUN_FLASH_PAGE_BITS, SAIFUN_FLASH_PAGE_SIZE, SAIFUN_FLASH_BYTE_ADDR_MASK, 0, "Entry 1100"}, /* Expansion entry 1101 */ {0x3b000002, 0x7b808201, 0x00050081, 0x03840253, 0xaf020406, - 0, SAIFUN_FLASH_PAGE_BITS, SAIFUN_FLASH_PAGE_SIZE, + NONBUFFERED_FLAGS, SAIFUN_FLASH_PAGE_BITS, SAIFUN_FLASH_PAGE_SIZE, SAIFUN_FLASH_BYTE_ADDR_MASK, 0, "Entry 1101"}, /* Ateml Expansion entry 1110 */ {0x37000001, 0x76808273, 0x00570081, 0x68848353, 0xaf000400, - 1, BUFFERED_FLASH_PAGE_BITS, BUFFERED_FLASH_PAGE_SIZE, + BUFFERED_FLAGS, BUFFERED_FLASH_PAGE_BITS, BUFFERED_FLASH_PAGE_SIZE, BUFFERED_FLASH_BYTE_ADDR_MASK, 0, "Entry 1110 (Atmel)"}, /* ATMEL AT45DB021B (buffered flash) */ {0x3f000003, 0x7e808273, 0x00570081, 0x68848353, 0xaf000400, - 1, BUFFERED_FLASH_PAGE_BITS, BUFFERED_FLASH_PAGE_SIZE, + BUFFERED_FLAGS, BUFFERED_FLASH_PAGE_BITS, BUFFERED_FLASH_PAGE_SIZE, BUFFERED_FLASH_BYTE_ADDR_MASK, BUFFERED_FLASH_TOTAL_SIZE*2, "Buffered flash (256kB)"}, }; +static struct flash_spec flash_5709 = { + .flags = BNX2_NV_BUFFERED, + .page_bits = BCM5709_FLASH_PAGE_BITS, + .page_size = BCM5709_FLASH_PAGE_SIZE, + .addr_mask = BCM5709_FLASH_BYTE_ADDR_MASK, + .total_size = BUFFERED_FLASH_TOTAL_SIZE*2, + .name = "5709 Buffered flash (256kB)", +}; + MODULE_DEVICE_TABLE(pci, bnx2_pci_tbl); static inline u32 bnx2_tx_avail(struct bnx2 *bp) @@ -3289,7 +3300,7 @@ bnx2_enable_nvram_write(struct bnx2 *bp) val = REG_RD(bp, BNX2_MISC_CFG); REG_WR(bp, BNX2_MISC_CFG, val | BNX2_MISC_CFG_NVM_WR_EN_PCI); - if (!bp->flash_info->buffered) { + if (bp->flash_info->flags & BNX2_NV_WREN) { int j; REG_WR(bp, BNX2_NVM_COMMAND, BNX2_NVM_COMMAND_DONE); @@ -3349,7 +3360,7 @@ bnx2_nvram_erase_page(struct bnx2 *bp, u32 offset) u32 cmd; int j; - if (bp->flash_info->buffered) + if (bp->flash_info->flags & BNX2_NV_BUFFERED) /* Buffered flash, no erase needed */ return 0; @@ -3392,8 +3403,8 @@ bnx2_nvram_read_dword(struct bnx2 *bp, u32 offset, u8 *ret_val, u32 cmd_flags) /* Build the command word. */ cmd = BNX2_NVM_COMMAND_DOIT | cmd_flags; - /* Calculate an offset of a buffered flash. */ - if (bp->flash_info->buffered) { + /* Calculate an offset of a buffered flash, not needed for 5709. */ + if (bp->flash_info->flags & BNX2_NV_TRANSLATE) { offset = ((offset / bp->flash_info->page_size) << bp->flash_info->page_bits) + (offset % bp->flash_info->page_size); @@ -3439,8 +3450,8 @@ bnx2_nvram_write_dword(struct bnx2 *bp, u32 offset, u8 *val, u32 cmd_flags) /* Build the command word. */ cmd = BNX2_NVM_COMMAND_DOIT | BNX2_NVM_COMMAND_WR | cmd_flags; - /* Calculate an offset of a buffered flash. */ - if (bp->flash_info->buffered) { + /* Calculate an offset of a buffered flash, not needed for 5709. */ + if (bp->flash_info->flags & BNX2_NV_TRANSLATE) { offset = ((offset / bp->flash_info->page_size) << bp->flash_info->page_bits) + (offset % bp->flash_info->page_size); @@ -3478,15 +3489,19 @@ static int bnx2_init_nvram(struct bnx2 *bp) { u32 val; - int j, entry_count, rc; + int j, entry_count, rc = 0; struct flash_spec *flash; + if (CHIP_NUM(bp) == CHIP_NUM_5709) { + bp->flash_info = &flash_5709; + goto get_flash_size; + } + /* Determine the selected interface. */ val = REG_RD(bp, BNX2_NVM_CFG1); entry_count = sizeof(flash_table) / sizeof(struct flash_spec); - rc = 0; if (val & 0x40000000) { /* Flash interface has been reconfigured */ @@ -3542,6 +3557,7 @@ bnx2_init_nvram(struct bnx2 *bp) return -ENODEV; } +get_flash_size: val = REG_RD_IND(bp, bp->shmem_base + BNX2_SHARED_HW_CFG_CONFIG2); val &= BNX2_SHARED_HW_CFG2_NVM_SIZE_MASK; if (val) @@ -3706,7 +3722,7 @@ bnx2_nvram_write(struct bnx2 *bp, u32 offset, u8 *data_buf, buf = align_buf; } - if (bp->flash_info->buffered == 0) { + if (!(bp->flash_info->flags & BNX2_NV_BUFFERED)) { flash_buffer = kmalloc(264, GFP_KERNEL); if (flash_buffer == NULL) { rc = -ENOMEM; @@ -3739,7 +3755,7 @@ bnx2_nvram_write(struct bnx2 *bp, u32 offset, u8 *data_buf, bnx2_enable_nvram_access(bp); cmd_flags = BNX2_NVM_COMMAND_FIRST; - if (bp->flash_info->buffered == 0) { + if (!(bp->flash_info->flags & BNX2_NV_BUFFERED)) { int j; /* Read the whole page into the buffer @@ -3767,7 +3783,7 @@ bnx2_nvram_write(struct bnx2 *bp, u32 offset, u8 *data_buf, /* Loop to write back the buffer data from page_start to * data_start */ i = 0; - if (bp->flash_info->buffered == 0) { + if (!(bp->flash_info->flags & BNX2_NV_BUFFERED)) { /* Erase the page */ if ((rc = bnx2_nvram_erase_page(bp, page_start)) != 0) goto nvram_write_end; @@ -3791,7 +3807,7 @@ bnx2_nvram_write(struct bnx2 *bp, u32 offset, u8 *data_buf, /* Loop to write the new data from data_start to data_end */ for (addr = data_start; addr < data_end; addr += 4, i += 4) { if ((addr == page_end - 4) || - ((bp->flash_info->buffered) && + ((bp->flash_info->flags & BNX2_NV_BUFFERED) && (addr == data_end - 4))) { cmd_flags |= BNX2_NVM_COMMAND_LAST; @@ -3808,7 +3824,7 @@ bnx2_nvram_write(struct bnx2 *bp, u32 offset, u8 *data_buf, /* Loop to write back the buffer data from data_end * to page_end */ - if (bp->flash_info->buffered == 0) { + if (!(bp->flash_info->flags & BNX2_NV_BUFFERED)) { for (addr = data_end; addr < page_end; addr += 4, i += 4) { @@ -4107,7 +4123,7 @@ bnx2_init_chip(struct bnx2 *bp) if (CHIP_NUM(bp) == CHIP_NUM_5708) REG_WR(bp, BNX2_HC_STATS_TICKS, 0); else - REG_WR(bp, BNX2_HC_STATS_TICKS, bp->stats_ticks & 0xffff00); + REG_WR(bp, BNX2_HC_STATS_TICKS, bp->stats_ticks); REG_WR(bp, BNX2_HC_STAT_COLLECT_TICKS, 0xbb8); /* 3ms */ if (CHIP_ID(bp) == CHIP_ID_5706_A1) @@ -4127,10 +4143,6 @@ bnx2_init_chip(struct bnx2 *bp) REG_WR(bp, BNX2_HC_ATTN_BITS_ENABLE, STATUS_ATTN_EVENTS); - if (REG_RD_IND(bp, bp->shmem_base + BNX2_PORT_FEATURE) & - BNX2_PORT_FEATURE_ASF_ENABLED) - bp->flags |= ASF_ENABLE_FLAG; - /* Initialize the receive filter. */ bnx2_set_rx_mode(bp->dev); @@ -5786,8 +5798,9 @@ bnx2_set_coalesce(struct net_device *dev, struct ethtool_coalesce *coal) if (bp->stats_ticks != 0 && bp->stats_ticks != USEC_PER_SEC) bp->stats_ticks = USEC_PER_SEC; } - if (bp->stats_ticks > 0xffff00) bp->stats_ticks = 0xffff00; - bp->stats_ticks &= 0xffff00; + if (bp->stats_ticks > BNX2_HC_STATS_TICKS_HC_STAT_TICKS) + bp->stats_ticks = BNX2_HC_STATS_TICKS_HC_STAT_TICKS; + bp->stats_ticks &= BNX2_HC_STATS_TICKS_HC_STAT_TICKS; if (netif_running(bp->dev)) { bnx2_netif_stop(bp); @@ -6629,6 +6642,18 @@ bnx2_init_board(struct pci_dev *pdev, struct net_device *dev) if (i != 2) bp->fw_version[j++] = '.'; } + if (REG_RD_IND(bp, bp->shmem_base + BNX2_PORT_FEATURE) & + BNX2_PORT_FEATURE_ASF_ENABLED) { + bp->flags |= ASF_ENABLE_FLAG; + + for (i = 0; i < 30; i++) { + reg = REG_RD_IND(bp, bp->shmem_base + + BNX2_BC_STATE_CONDITION); + if (reg & BNX2_CONDITION_MFW_RUN_MASK) + break; + msleep(10); + } + } reg = REG_RD_IND(bp, bp->shmem_base + BNX2_BC_STATE_CONDITION); reg &= BNX2_CONDITION_MFW_RUN_MASK; if (reg != BNX2_CONDITION_MFW_RUN_UNKNOWN && @@ -6672,7 +6697,7 @@ bnx2_init_board(struct pci_dev *pdev, struct net_device *dev) bp->rx_ticks_int = 18; bp->rx_ticks = 18; - bp->stats_ticks = 1000000 & 0xffff00; + bp->stats_ticks = USEC_PER_SEC & BNX2_HC_STATS_TICKS_HC_STAT_TICKS; bp->timer_interval = HZ; bp->current_interval = HZ; diff --git a/drivers/net/bnx2.h b/drivers/net/bnx2.h index d8cd1afeb23..102adfe1e92 100644 --- a/drivers/net/bnx2.h +++ b/drivers/net/bnx2.h @@ -6433,6 +6433,11 @@ struct sw_bd { #define ST_MICRO_FLASH_PAGE_SIZE 256 #define ST_MICRO_FLASH_BASE_TOTAL_SIZE 65536 +#define BCM5709_FLASH_PAGE_BITS 8 +#define BCM5709_FLASH_PHY_PAGE_SIZE (1 << BCM5709_FLASH_PAGE_BITS) +#define BCM5709_FLASH_BYTE_ADDR_MASK (BCM5709_FLASH_PHY_PAGE_SIZE-1) +#define BCM5709_FLASH_PAGE_SIZE 256 + #define NVRAM_TIMEOUT_COUNT 30000 @@ -6449,7 +6454,10 @@ struct flash_spec { u32 config2; u32 config3; u32 write1; - u32 buffered; + u32 flags; +#define BNX2_NV_BUFFERED 0x00000001 +#define BNX2_NV_TRANSLATE 0x00000002 +#define BNX2_NV_WREN 0x00000004 u32 page_bits; u32 page_size; u32 addr_mask; diff --git a/drivers/net/bsd_comp.c b/drivers/net/bsd_comp.c index 7845eaf6f29..202d4a4ef75 100644 --- a/drivers/net/bsd_comp.c +++ b/drivers/net/bsd_comp.c @@ -395,14 +395,13 @@ static void *bsd_alloc (unsigned char *options, int opt_len, int decomp) * Allocate the main control structure for this instance. */ maxmaxcode = MAXCODE(bits); - db = kmalloc(sizeof (struct bsd_db), + db = kzalloc(sizeof (struct bsd_db), GFP_KERNEL); if (!db) { return NULL; } - memset (db, 0, sizeof(struct bsd_db)); /* * Allocate space for the dictionary. This may be more than one page in * length. diff --git a/drivers/net/ehea/ehea.h b/drivers/net/ehea/ehea.h index 6628fa622e2..489c8b260dd 100644 --- a/drivers/net/ehea/ehea.h +++ b/drivers/net/ehea/ehea.h @@ -39,7 +39,7 @@ #include <asm/io.h> #define DRV_NAME "ehea" -#define DRV_VERSION "EHEA_0070" +#define DRV_VERSION "EHEA_0071" /* eHEA capability flags */ #define DLPAR_PORT_ADD_REM 1 diff --git a/drivers/net/ehea/ehea_main.c b/drivers/net/ehea/ehea_main.c index 1d1571cf322..4c70a9301c1 100644 --- a/drivers/net/ehea/ehea_main.c +++ b/drivers/net/ehea/ehea_main.c @@ -466,6 +466,8 @@ static struct ehea_cqe *ehea_proc_rwqes(struct net_device *dev, cqe->vlan_tag); else netif_receive_skb(skb); + + dev->last_rx = jiffies; } else { pr->p_stats.poll_receive_errors++; port_reset = ehea_treat_poll_error(pr, rq, cqe, @@ -1433,7 +1435,8 @@ static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid) port->logical_port_id, reg_type, port->mac_addr, 0, hcallid); if (hret != H_SUCCESS) { - ehea_error("reg_dereg_bcmc failed (tagged)"); + ehea_error("%sregistering bc address failed (tagged)", + hcallid == H_REG_BCMC ? "" : "de"); ret = -EIO; goto out_herr; } @@ -1444,7 +1447,8 @@ static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid) port->logical_port_id, reg_type, port->mac_addr, 0, hcallid); if (hret != H_SUCCESS) { - ehea_error("reg_dereg_bcmc failed (vlan)"); + ehea_error("%sregistering bc address failed (vlan)", + hcallid == H_REG_BCMC ? "" : "de"); ret = -EIO; } out_herr: @@ -2170,7 +2174,6 @@ static int ehea_up(struct net_device *dev) { int ret, i; struct ehea_port *port = netdev_priv(dev); - u64 mac_addr = 0; if (port->state == EHEA_PORT_UP) return 0; @@ -2189,18 +2192,10 @@ static int ehea_up(struct net_device *dev) goto out_clean_pr; } - ret = ehea_broadcast_reg_helper(port, H_REG_BCMC); - if (ret) { - ret = -EIO; - ehea_error("out_clean_pr"); - goto out_clean_pr; - } - mac_addr = (*(u64*)dev->dev_addr) >> 16; - ret = ehea_reg_interrupts(dev); if (ret) { - ehea_error("out_dereg_bc"); - goto out_dereg_bc; + ehea_error("reg_interrupts failed. ret:%d", ret); + goto out_clean_pr; } for(i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) { @@ -2226,9 +2221,6 @@ static int ehea_up(struct net_device *dev) out_free_irqs: ehea_free_interrupts(dev); -out_dereg_bc: - ehea_broadcast_reg_helper(port, H_DEREG_BCMC); - out_clean_pr: ehea_clean_all_portres(port); out: @@ -2273,7 +2265,6 @@ static int ehea_down(struct net_device *dev) &port->port_res[i].d_netdev->state)) msleep(1); - ehea_broadcast_reg_helper(port, H_DEREG_BCMC); port->state = EHEA_PORT_DOWN; ret = ehea_clean_all_portres(port); @@ -2655,12 +2646,18 @@ struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter, INIT_WORK(&port->reset_task, ehea_reset_port); + ret = ehea_broadcast_reg_helper(port, H_REG_BCMC); + if (ret) { + ret = -EIO; + goto out_unreg_port; + } + ehea_set_ethtool_ops(dev); ret = register_netdev(dev); if (ret) { ehea_error("register_netdev failed. ret=%d", ret); - goto out_unreg_port; + goto out_dereg_bc; } ret = ehea_get_jumboframe_status(port, &jumbo); @@ -2675,6 +2672,9 @@ struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter, return port; +out_dereg_bc: + ehea_broadcast_reg_helper(port, H_DEREG_BCMC); + out_unreg_port: ehea_unregister_port(port); @@ -2694,6 +2694,7 @@ static void ehea_shutdown_single_port(struct ehea_port *port) { unregister_netdev(port->netdev); ehea_unregister_port(port); + ehea_broadcast_reg_helper(port, H_DEREG_BCMC); kfree(port->mc_list); free_netdev(port->netdev); port->adapter->active_ports--; diff --git a/drivers/net/forcedeth.c b/drivers/net/forcedeth.c index 136827f8dc2..6d1d50a1978 100644 --- a/drivers/net/forcedeth.c +++ b/drivers/net/forcedeth.c @@ -5137,12 +5137,10 @@ static int __devinit nv_probe(struct pci_dev *pci_dev, const struct pci_device_i goto out_unmap; np->tx_ring.ex = &np->rx_ring.ex[np->rx_ring_size]; } - np->rx_skb = kmalloc(sizeof(struct nv_skb_map) * np->rx_ring_size, GFP_KERNEL); - np->tx_skb = kmalloc(sizeof(struct nv_skb_map) * np->tx_ring_size, GFP_KERNEL); + np->rx_skb = kcalloc(np->rx_ring_size, sizeof(struct nv_skb_map), GFP_KERNEL); + np->tx_skb = kcalloc(np->tx_ring_size, sizeof(struct nv_skb_map), GFP_KERNEL); if (!np->rx_skb || !np->tx_skb) goto out_freering; - memset(np->rx_skb, 0, sizeof(struct nv_skb_map) * np->rx_ring_size); - memset(np->tx_skb, 0, sizeof(struct nv_skb_map) * np->tx_ring_size); dev->open = nv_open; dev->stop = nv_close; diff --git a/drivers/net/gianfar.c b/drivers/net/gianfar.c index d7a1a58de76..f92690555dd 100644 --- a/drivers/net/gianfar.c +++ b/drivers/net/gianfar.c @@ -420,8 +420,18 @@ static phy_interface_t gfar_get_interface(struct net_device *dev) if (ecntrl & ECNTRL_REDUCED_MODE) { if (ecntrl & ECNTRL_REDUCED_MII_MODE) return PHY_INTERFACE_MODE_RMII; - else + else { + phy_interface_t interface = priv->einfo->interface; + + /* + * This isn't autodetected right now, so it must + * be set by the device tree or platform code. + */ + if (interface == PHY_INTERFACE_MODE_RGMII_ID) + return PHY_INTERFACE_MODE_RGMII_ID; + return PHY_INTERFACE_MODE_RGMII; + } } if (priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_GIGABIT) diff --git a/drivers/net/hamradio/baycom_epp.c b/drivers/net/hamradio/baycom_epp.c index 84aa2117c0e..355c6cf3d11 100644 --- a/drivers/net/hamradio/baycom_epp.c +++ b/drivers/net/hamradio/baycom_epp.c @@ -320,7 +320,7 @@ static int eppconfig(struct baycom_state *bc) sprintf(portarg, "%ld", bc->pdev->port->base); printk(KERN_DEBUG "%s: %s -s -p %s -m %s\n", bc_drvname, eppconfig_path, portarg, modearg); - return call_usermodehelper(eppconfig_path, argv, envp, 1); + return call_usermodehelper(eppconfig_path, argv, envp, UMH_WAIT_PROC); } /* ---------------------------------------------------------------------- */ diff --git a/drivers/net/hamradio/dmascc.c b/drivers/net/hamradio/dmascc.c index 3be8c504759..205f0967249 100644 --- a/drivers/net/hamradio/dmascc.c +++ b/drivers/net/hamradio/dmascc.c @@ -453,8 +453,8 @@ static int __init setup_adapter(int card_base, int type, int n) int scc_base = card_base + hw[type].scc_offset; char *chipnames[] = CHIPNAMES; - /* Allocate memory */ - info = kmalloc(sizeof(struct scc_info), GFP_KERNEL | GFP_DMA); + /* Initialize what is necessary for write_scc and write_scc_data */ + info = kzalloc(sizeof(struct scc_info), GFP_KERNEL | GFP_DMA); if (!info) { printk(KERN_ERR "dmascc: " "could not allocate memory for %s at %#3x\n", @@ -462,8 +462,6 @@ static int __init setup_adapter(int card_base, int type, int n) goto out; } - /* Initialize what is necessary for write_scc and write_scc_data */ - memset(info, 0, sizeof(struct scc_info)); info->dev[0] = alloc_netdev(0, "", dev_setup); if (!info->dev[0]) { diff --git a/drivers/net/irda/Kconfig b/drivers/net/irda/Kconfig index 829da9a1d11..2098d0af8ff 100644 --- a/drivers/net/irda/Kconfig +++ b/drivers/net/irda/Kconfig @@ -155,6 +155,15 @@ config KINGSUN_DONGLE To compile it as a module, choose M here: the module will be called kingsun-sir. +config EP7211_DONGLE + tristate "EP7211 I/R support" + depends on IRTTY_SIR && ARCH_EP7211 && IRDA && EXPERIMENTAL + help + Say Y here if you want to build support for the Cirrus logic + EP7211 chipset's infrared module. + + + comment "Old SIR device drivers" config IRPORT_SIR @@ -355,7 +364,7 @@ config WINBOND_FIR config TOSHIBA_FIR tristate "Toshiba Type-O IR Port" - depends on IRDA && PCI && !64BIT + depends on IRDA && PCI && !64BIT && VIRT_TO_BUS help Say Y here if you want to build support for the Toshiba Type-O IR and Donau oboe chipsets. These chipsets are used by the Toshiba diff --git a/drivers/net/irda/Makefile b/drivers/net/irda/Makefile index 233a2f92373..2808ef5c7b7 100644 --- a/drivers/net/irda/Makefile +++ b/drivers/net/irda/Makefile @@ -45,6 +45,7 @@ obj-$(CONFIG_MCP2120_DONGLE) += mcp2120-sir.o obj-$(CONFIG_ACT200L_DONGLE) += act200l-sir.o obj-$(CONFIG_MA600_DONGLE) += ma600-sir.o obj-$(CONFIG_TOIM3232_DONGLE) += toim3232-sir.o +obj-$(CONFIG_EP7211_DONGLE) += ep7211-sir.o obj-$(CONFIG_KINGSUN_DONGLE) += kingsun-sir.o # The SIR helper module diff --git a/drivers/net/irda/ep7211-sir.c b/drivers/net/irda/ep7211-sir.c new file mode 100644 index 00000000000..831572429bb --- /dev/null +++ b/drivers/net/irda/ep7211-sir.c @@ -0,0 +1,89 @@ +/* + * IR port driver for the Cirrus Logic EP7211 processor. + * + * Copyright 2001, Blue Mug Inc. All rights reserved. + * Copyright 2007, Samuel Ortiz <samuel@sortiz.org> + */ +#include <linux/module.h> +#include <linux/delay.h> +#include <linux/tty.h> +#include <linux/init.h> +#include <linux/spinlock.h> + +#include <net/irda/irda.h> +#include <net/irda/irda_device.h> + +#include <asm/io.h> +#include <asm/hardware.h> + +#include "sir-dev.h" + +#define MIN_DELAY 25 /* 15 us, but wait a little more to be sure */ +#define MAX_DELAY 10000 /* 1 ms */ + +static int ep7211_open(struct sir_dev *dev); +static int ep7211_close(struct sir_dev *dev); +static int ep7211_change_speed(struct sir_dev *dev, unsigned speed); +static int ep7211_reset(struct sir_dev *dev); + +static struct dongle_driver ep7211 = { + .owner = THIS_MODULE, + .driver_name = "EP7211 IR driver", + .type = IRDA_EP7211_DONGLE, + .open = ep7211_open, + .close = ep7211_close, + .reset = ep7211_reset, + .set_speed = ep7211_change_speed, +}; + +static int __init ep7211_sir_init(void) +{ + return irda_register_dongle(&ep7211); +} + +static void __exit ep7211_sir_cleanup(void) +{ + irda_unregister_dongle(&ep7211); +} + +static int ep7211_open(struct sir_dev *dev) +{ + unsigned int syscon; + + /* Turn on the SIR encoder. */ + syscon = clps_readl(SYSCON1); + syscon |= SYSCON1_SIREN; + clps_writel(syscon, SYSCON1); + + return 0; +} + +static int ep7211_close(struct sir_dev *dev) +{ + unsigned int syscon; + + /* Turn off the SIR encoder. */ + syscon = clps_readl(SYSCON1); + syscon &= ~SYSCON1_SIREN; + clps_writel(syscon, SYSCON1); + + return 0; +} + +static int ep7211_change_speed(struct sir_dev *dev, unsigned speed) +{ + return 0; +} + +static int ep7211_reset(struct sir_dev *dev) +{ + return 0; +} + +MODULE_AUTHOR("Samuel Ortiz <samuel@sortiz.org>"); +MODULE_DESCRIPTION("EP7211 IR dongle driver"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("irda-dongle-13"); /* IRDA_EP7211_DONGLE */ + +module_init(ep7211_sir_init); +module_exit(ep7211_sir_cleanup); diff --git a/drivers/net/irda/irport.c b/drivers/net/irda/irport.c index 3078c419cb0..20732458f5a 100644 --- a/drivers/net/irda/irport.c +++ b/drivers/net/irda/irport.c @@ -164,14 +164,13 @@ irport_open(int i, unsigned int iobase, unsigned int irq) /* Allocate memory if needed */ if (self->tx_buff.truesize > 0) { - self->tx_buff.head = kmalloc(self->tx_buff.truesize, + self->tx_buff.head = kzalloc(self->tx_buff.truesize, GFP_KERNEL); if (self->tx_buff.head == NULL) { IRDA_ERROR("%s(), can't allocate memory for " "transmit buffer!\n", __FUNCTION__); goto err_out4; } - memset(self->tx_buff.head, 0, self->tx_buff.truesize); } self->tx_buff.data = self->tx_buff.head; diff --git a/drivers/net/irda/irtty-sir.c b/drivers/net/irda/irtty-sir.c index ad1857364d5..6f5f697ec9f 100644 --- a/drivers/net/irda/irtty-sir.c +++ b/drivers/net/irda/irtty-sir.c @@ -505,10 +505,9 @@ static int irtty_open(struct tty_struct *tty) } /* allocate private device info block */ - priv = kmalloc(sizeof(*priv), GFP_KERNEL); + priv = kzalloc(sizeof(*priv), GFP_KERNEL); if (!priv) goto out_put; - memset(priv, 0, sizeof(*priv)); priv->magic = IRTTY_MAGIC; priv->tty = tty; diff --git a/drivers/net/iseries_veth.c b/drivers/net/iseries_veth.c index 347d50cd77d..0433c41f902 100644 --- a/drivers/net/iseries_veth.c +++ b/drivers/net/iseries_veth.c @@ -822,10 +822,9 @@ static int veth_init_connection(u8 rlp) || ! HvLpConfig_doLpsCommunicateOnVirtualLan(this_lp, rlp) ) return 0; - cnx = kmalloc(sizeof(*cnx), GFP_KERNEL); + cnx = kzalloc(sizeof(*cnx), GFP_KERNEL); if (! cnx) return -ENOMEM; - memset(cnx, 0, sizeof(*cnx)); cnx->remote_lp = rlp; spin_lock_init(&cnx->lock); @@ -852,14 +851,13 @@ static int veth_init_connection(u8 rlp) if (rc != 0) return rc; - msgs = kmalloc(VETH_NUMBUFFERS * sizeof(struct veth_msg), GFP_KERNEL); + msgs = kcalloc(VETH_NUMBUFFERS, sizeof(struct veth_msg), GFP_KERNEL); if (! msgs) { veth_error("Can't allocate buffers for LPAR %d.\n", rlp); return -ENOMEM; } cnx->msgs = msgs; - memset(msgs, 0, VETH_NUMBUFFERS * sizeof(struct veth_msg)); for (i = 0; i < VETH_NUMBUFFERS; i++) { msgs[i].token = i; diff --git a/drivers/net/lance.c b/drivers/net/lance.c index a2f37e52b92..a4e5fab1262 100644 --- a/drivers/net/lance.c +++ b/drivers/net/lance.c @@ -533,11 +533,10 @@ static int __init lance_probe1(struct net_device *dev, int ioaddr, int irq, int dev->base_addr = ioaddr; /* Make certain the data structures used by the LANCE are aligned and DMAble. */ - lp = kmalloc(sizeof(*lp), GFP_DMA | GFP_KERNEL); + lp = kzalloc(sizeof(*lp), GFP_DMA | GFP_KERNEL); if(lp==NULL) return -ENODEV; if (lance_debug > 6) printk(" (#0x%05lx)", (unsigned long)lp); - memset(lp, 0, sizeof(*lp)); dev->priv = lp; lp->name = chipname; lp->rx_buffs = (unsigned long)kmalloc(PKT_BUF_SZ*RX_RING_SIZE, diff --git a/drivers/net/lguest_net.c b/drivers/net/lguest_net.c new file mode 100644 index 00000000000..112778652f7 --- /dev/null +++ b/drivers/net/lguest_net.c @@ -0,0 +1,354 @@ +/* A simple network driver for lguest. + * + * Copyright 2006 Rusty Russell <rusty@rustcorp.com.au> IBM Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +//#define DEBUG +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/module.h> +#include <linux/mm_types.h> +#include <linux/io.h> +#include <linux/lguest_bus.h> + +#define SHARED_SIZE PAGE_SIZE +#define MAX_LANS 4 +#define NUM_SKBS 8 + +struct lguestnet_info +{ + /* The shared page(s). */ + struct lguest_net *peer; + unsigned long peer_phys; + unsigned long mapsize; + + /* The lguest_device I come from */ + struct lguest_device *lgdev; + + /* My peerid. */ + unsigned int me; + + /* Receive queue. */ + struct sk_buff *skb[NUM_SKBS]; + struct lguest_dma dma[NUM_SKBS]; +}; + +/* How many bytes left in this page. */ +static unsigned int rest_of_page(void *data) +{ + return PAGE_SIZE - ((unsigned long)data % PAGE_SIZE); +} + +/* Simple convention: offset 4 * peernum. */ +static unsigned long peer_key(struct lguestnet_info *info, unsigned peernum) +{ + return info->peer_phys + 4 * peernum; +} + +static void skb_to_dma(const struct sk_buff *skb, unsigned int headlen, + struct lguest_dma *dma) +{ + unsigned int i, seg; + + for (i = seg = 0; i < headlen; seg++, i += rest_of_page(skb->data+i)) { + dma->addr[seg] = virt_to_phys(skb->data + i); + dma->len[seg] = min((unsigned)(headlen - i), + rest_of_page(skb->data + i)); + } + for (i = 0; i < skb_shinfo(skb)->nr_frags; i++, seg++) { + const skb_frag_t *f = &skb_shinfo(skb)->frags[i]; + /* Should not happen with MTU less than 64k - 2 * PAGE_SIZE. */ + if (seg == LGUEST_MAX_DMA_SECTIONS) { + printk("Woah dude! Megapacket!\n"); + break; + } + dma->addr[seg] = page_to_phys(f->page) + f->page_offset; + dma->len[seg] = f->size; + } + if (seg < LGUEST_MAX_DMA_SECTIONS) + dma->len[seg] = 0; +} + +/* We overload multicast bit to show promiscuous mode. */ +#define PROMISC_BIT 0x01 + +static void lguestnet_set_multicast(struct net_device *dev) +{ + struct lguestnet_info *info = netdev_priv(dev); + + if ((dev->flags & (IFF_PROMISC|IFF_ALLMULTI)) || dev->mc_count) + info->peer[info->me].mac[0] |= PROMISC_BIT; + else + info->peer[info->me].mac[0] &= ~PROMISC_BIT; +} + +static int promisc(struct lguestnet_info *info, unsigned int peer) +{ + return info->peer[peer].mac[0] & PROMISC_BIT; +} + +static int mac_eq(const unsigned char mac[ETH_ALEN], + struct lguestnet_info *info, unsigned int peer) +{ + /* Ignore multicast bit, which peer turns on to mean promisc. */ + if ((info->peer[peer].mac[0] & (~PROMISC_BIT)) != mac[0]) + return 0; + return memcmp(mac+1, info->peer[peer].mac+1, ETH_ALEN-1) == 0; +} + +static void transfer_packet(struct net_device *dev, + struct sk_buff *skb, + unsigned int peernum) +{ + struct lguestnet_info *info = netdev_priv(dev); + struct lguest_dma dma; + + skb_to_dma(skb, skb_headlen(skb), &dma); + pr_debug("xfer length %04x (%u)\n", htons(skb->len), skb->len); + + lguest_send_dma(peer_key(info, peernum), &dma); + if (dma.used_len != skb->len) { + dev->stats.tx_carrier_errors++; + pr_debug("Bad xfer to peer %i: %i of %i (dma %p/%i)\n", + peernum, dma.used_len, skb->len, + (void *)dma.addr[0], dma.len[0]); + } else { + dev->stats.tx_bytes += skb->len; + dev->stats.tx_packets++; + } +} + +static int unused_peer(const struct lguest_net peer[], unsigned int num) +{ + return peer[num].mac[0] == 0; +} + +static int lguestnet_start_xmit(struct sk_buff *skb, struct net_device *dev) +{ + unsigned int i; + int broadcast; + struct lguestnet_info *info = netdev_priv(dev); + const unsigned char *dest = ((struct ethhdr *)skb->data)->h_dest; + + pr_debug("%s: xmit %02x:%02x:%02x:%02x:%02x:%02x\n", + dev->name, dest[0],dest[1],dest[2],dest[3],dest[4],dest[5]); + + broadcast = is_multicast_ether_addr(dest); + for (i = 0; i < info->mapsize/sizeof(struct lguest_net); i++) { + if (i == info->me || unused_peer(info->peer, i)) + continue; + + if (!broadcast && !promisc(info, i) && !mac_eq(dest, info, i)) + continue; + + pr_debug("lguestnet %s: sending from %i to %i\n", + dev->name, info->me, i); + transfer_packet(dev, skb, i); + } + dev_kfree_skb(skb); + return 0; +} + +/* Find a new skb to put in this slot in shared mem. */ +static int fill_slot(struct net_device *dev, unsigned int slot) +{ + struct lguestnet_info *info = netdev_priv(dev); + /* Try to create and register a new one. */ + info->skb[slot] = netdev_alloc_skb(dev, ETH_HLEN + ETH_DATA_LEN); + if (!info->skb[slot]) { + printk("%s: could not fill slot %i\n", dev->name, slot); + return -ENOMEM; + } + + skb_to_dma(info->skb[slot], ETH_HLEN + ETH_DATA_LEN, &info->dma[slot]); + wmb(); + /* Now we tell hypervisor it can use the slot. */ + info->dma[slot].used_len = 0; + return 0; +} + +static irqreturn_t lguestnet_rcv(int irq, void *dev_id) +{ + struct net_device *dev = dev_id; + struct lguestnet_info *info = netdev_priv(dev); + unsigned int i, done = 0; + + for (i = 0; i < ARRAY_SIZE(info->dma); i++) { + unsigned int length; + struct sk_buff *skb; + + length = info->dma[i].used_len; + if (length == 0) + continue; + + done++; + skb = info->skb[i]; + fill_slot(dev, i); + + if (length < ETH_HLEN || length > ETH_HLEN + ETH_DATA_LEN) { + pr_debug(KERN_WARNING "%s: unbelievable skb len: %i\n", + dev->name, length); + dev_kfree_skb(skb); + continue; + } + + skb_put(skb, length); + skb->protocol = eth_type_trans(skb, dev); + /* This is a reliable transport. */ + if (dev->features & NETIF_F_NO_CSUM) + skb->ip_summed = CHECKSUM_UNNECESSARY; + pr_debug("Receiving skb proto 0x%04x len %i type %i\n", + ntohs(skb->protocol), skb->len, skb->pkt_type); + + dev->stats.rx_bytes += skb->len; + dev->stats.rx_packets++; + netif_rx(skb); + } + return done ? IRQ_HANDLED : IRQ_NONE; +} + +static int lguestnet_open(struct net_device *dev) +{ + int i; + struct lguestnet_info *info = netdev_priv(dev); + + /* Set up our MAC address */ + memcpy(info->peer[info->me].mac, dev->dev_addr, ETH_ALEN); + + /* Turn on promisc mode if needed */ + lguestnet_set_multicast(dev); + + for (i = 0; i < ARRAY_SIZE(info->dma); i++) { + if (fill_slot(dev, i) != 0) + goto cleanup; + } + if (lguest_bind_dma(peer_key(info,info->me), info->dma, + NUM_SKBS, lgdev_irq(info->lgdev)) != 0) + goto cleanup; + return 0; + +cleanup: + while (--i >= 0) + dev_kfree_skb(info->skb[i]); + return -ENOMEM; +} + +static int lguestnet_close(struct net_device *dev) +{ + unsigned int i; + struct lguestnet_info *info = netdev_priv(dev); + + /* Clear all trace: others might deliver packets, we'll ignore it. */ + memset(&info->peer[info->me], 0, sizeof(info->peer[info->me])); + + /* Deregister sg lists. */ + lguest_unbind_dma(peer_key(info, info->me), info->dma); + for (i = 0; i < ARRAY_SIZE(info->dma); i++) + dev_kfree_skb(info->skb[i]); + return 0; +} + +static int lguestnet_probe(struct lguest_device *lgdev) +{ + int err, irqf = IRQF_SHARED; + struct net_device *dev; + struct lguestnet_info *info; + struct lguest_device_desc *desc = &lguest_devices[lgdev->index]; + + pr_debug("lguest_net: probing for device %i\n", lgdev->index); + + dev = alloc_etherdev(sizeof(struct lguestnet_info)); + if (!dev) + return -ENOMEM; + + SET_MODULE_OWNER(dev); + + /* Ethernet defaults with some changes */ + ether_setup(dev); + dev->set_mac_address = NULL; + + dev->dev_addr[0] = 0x02; /* set local assignment bit (IEEE802) */ + dev->dev_addr[1] = 0x00; + memcpy(&dev->dev_addr[2], &lguest_data.guestid, 2); + dev->dev_addr[4] = 0x00; + dev->dev_addr[5] = 0x00; + + dev->open = lguestnet_open; + dev->stop = lguestnet_close; + dev->hard_start_xmit = lguestnet_start_xmit; + + /* Turning on/off promisc will call dev->set_multicast_list. + * We don't actually support multicast yet */ + dev->set_multicast_list = lguestnet_set_multicast; + SET_NETDEV_DEV(dev, &lgdev->dev); + if (desc->features & LGUEST_NET_F_NOCSUM) + dev->features = NETIF_F_SG|NETIF_F_NO_CSUM; + + info = netdev_priv(dev); + info->mapsize = PAGE_SIZE * desc->num_pages; + info->peer_phys = ((unsigned long)desc->pfn << PAGE_SHIFT); + info->lgdev = lgdev; + info->peer = lguest_map(info->peer_phys, desc->num_pages); + if (!info->peer) { + err = -ENOMEM; + goto free; + } + + /* This stores our peerid (upper bits reserved for future). */ + info->me = (desc->features & (info->mapsize-1)); + + err = register_netdev(dev); + if (err) { + pr_debug("lguestnet: registering device failed\n"); + goto unmap; + } + + if (lguest_devices[lgdev->index].features & LGUEST_DEVICE_F_RANDOMNESS) + irqf |= IRQF_SAMPLE_RANDOM; + if (request_irq(lgdev_irq(lgdev), lguestnet_rcv, irqf, "lguestnet", + dev) != 0) { + pr_debug("lguestnet: cannot get irq %i\n", lgdev_irq(lgdev)); + goto unregister; + } + + pr_debug("lguestnet: registered device %s\n", dev->name); + lgdev->private = dev; + return 0; + +unregister: + unregister_netdev(dev); +unmap: + lguest_unmap(info->peer); +free: + free_netdev(dev); + return err; +} + +static struct lguest_driver lguestnet_drv = { + .name = "lguestnet", + .owner = THIS_MODULE, + .device_type = LGUEST_DEVICE_T_NET, + .probe = lguestnet_probe, +}; + +static __init int lguestnet_init(void) +{ + return register_lguest_driver(&lguestnet_drv); +} +module_init(lguestnet_init); + +MODULE_DESCRIPTION("Lguest network driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/net/mac89x0.c b/drivers/net/mac89x0.c index 26a3b45a4a3..62c1c6262fe 100644 --- a/drivers/net/mac89x0.c +++ b/drivers/net/mac89x0.c @@ -608,7 +608,7 @@ module_param(debug, int, 0); MODULE_PARM_DESC(debug, "CS89[02]0 debug level (0-5)"); MODULE_LICENSE("GPL"); -int +int __init init_module(void) { net_debug = debug; diff --git a/drivers/net/mlx4/catas.c b/drivers/net/mlx4/catas.c index 1bb088aeaf7..6b32ec94b3a 100644 --- a/drivers/net/mlx4/catas.c +++ b/drivers/net/mlx4/catas.c @@ -30,41 +30,133 @@ * SOFTWARE. */ +#include <linux/workqueue.h> + #include "mlx4.h" -void mlx4_handle_catas_err(struct mlx4_dev *dev) +enum { + MLX4_CATAS_POLL_INTERVAL = 5 * HZ, +}; + +static DEFINE_SPINLOCK(catas_lock); + +static LIST_HEAD(catas_list); +static struct workqueue_struct *catas_wq; +static struct work_struct catas_work; + +static int internal_err_reset = 1; +module_param(internal_err_reset, int, 0644); +MODULE_PARM_DESC(internal_err_reset, + "Reset device on internal errors if non-zero (default 1)"); + +static void dump_err_buf(struct mlx4_dev *dev) { struct mlx4_priv *priv = mlx4_priv(dev); int i; - mlx4_err(dev, "Catastrophic error detected:\n"); + mlx4_err(dev, "Internal error detected:\n"); for (i = 0; i < priv->fw.catas_size; ++i) mlx4_err(dev, " buf[%02x]: %08x\n", i, swab32(readl(priv->catas_err.map + i))); +} - mlx4_dispatch_event(dev, MLX4_EVENT_TYPE_LOCAL_CATAS_ERROR, 0, 0); +static void poll_catas(unsigned long dev_ptr) +{ + struct mlx4_dev *dev = (struct mlx4_dev *) dev_ptr; + struct mlx4_priv *priv = mlx4_priv(dev); + + if (readl(priv->catas_err.map)) { + dump_err_buf(dev); + + mlx4_dispatch_event(dev, MLX4_EVENT_TYPE_LOCAL_CATAS_ERROR, 0, 0); + + if (internal_err_reset) { + spin_lock(&catas_lock); + list_add(&priv->catas_err.list, &catas_list); + spin_unlock(&catas_lock); + + queue_work(catas_wq, &catas_work); + } + } else + mod_timer(&priv->catas_err.timer, + round_jiffies(jiffies + MLX4_CATAS_POLL_INTERVAL)); } -void mlx4_map_catas_buf(struct mlx4_dev *dev) +static void catas_reset(struct work_struct *work) +{ + struct mlx4_priv *priv, *tmppriv; + struct mlx4_dev *dev; + + LIST_HEAD(tlist); + int ret; + + spin_lock_irq(&catas_lock); + list_splice_init(&catas_list, &tlist); + spin_unlock_irq(&catas_lock); + + list_for_each_entry_safe(priv, tmppriv, &tlist, catas_err.list) { + ret = mlx4_restart_one(priv->dev.pdev); + dev = &priv->dev; + if (ret) + mlx4_err(dev, "Reset failed (%d)\n", ret); + else + mlx4_dbg(dev, "Reset succeeded\n"); + } +} + +void mlx4_start_catas_poll(struct mlx4_dev *dev) { struct mlx4_priv *priv = mlx4_priv(dev); unsigned long addr; + INIT_LIST_HEAD(&priv->catas_err.list); + init_timer(&priv->catas_err.timer); + priv->catas_err.map = NULL; + addr = pci_resource_start(dev->pdev, priv->fw.catas_bar) + priv->fw.catas_offset; priv->catas_err.map = ioremap(addr, priv->fw.catas_size * 4); - if (!priv->catas_err.map) - mlx4_warn(dev, "Failed to map catastrophic error buffer at 0x%lx\n", + if (!priv->catas_err.map) { + mlx4_warn(dev, "Failed to map internal error buffer at 0x%lx\n", addr); + return; + } + priv->catas_err.timer.data = (unsigned long) dev; + priv->catas_err.timer.function = poll_catas; + priv->catas_err.timer.expires = + round_jiffies(jiffies + MLX4_CATAS_POLL_INTERVAL); + add_timer(&priv->catas_err.timer); } -void mlx4_unmap_catas_buf(struct mlx4_dev *dev) +void mlx4_stop_catas_poll(struct mlx4_dev *dev) { struct mlx4_priv *priv = mlx4_priv(dev); + del_timer_sync(&priv->catas_err.timer); + if (priv->catas_err.map) iounmap(priv->catas_err.map); + + spin_lock_irq(&catas_lock); + list_del(&priv->catas_err.list); + spin_unlock_irq(&catas_lock); +} + +int __init mlx4_catas_init(void) +{ + INIT_WORK(&catas_work, catas_reset); + + catas_wq = create_singlethread_workqueue("mlx4_err"); + if (!catas_wq) + return -ENOMEM; + + return 0; +} + +void mlx4_catas_cleanup(void) +{ + destroy_workqueue(catas_wq); } diff --git a/drivers/net/mlx4/eq.c b/drivers/net/mlx4/eq.c index 27a82cecd69..2095c843fa1 100644 --- a/drivers/net/mlx4/eq.c +++ b/drivers/net/mlx4/eq.c @@ -89,14 +89,12 @@ struct mlx4_eq_context { (1ull << MLX4_EVENT_TYPE_PATH_MIG_FAILED) | \ (1ull << MLX4_EVENT_TYPE_WQ_INVAL_REQ_ERROR) | \ (1ull << MLX4_EVENT_TYPE_WQ_ACCESS_ERROR) | \ - (1ull << MLX4_EVENT_TYPE_LOCAL_CATAS_ERROR) | \ (1ull << MLX4_EVENT_TYPE_PORT_CHANGE) | \ (1ull << MLX4_EVENT_TYPE_ECC_DETECT) | \ (1ull << MLX4_EVENT_TYPE_SRQ_CATAS_ERROR) | \ (1ull << MLX4_EVENT_TYPE_SRQ_QP_LAST_WQE) | \ (1ull << MLX4_EVENT_TYPE_SRQ_LIMIT) | \ (1ull << MLX4_EVENT_TYPE_CMD)) -#define MLX4_CATAS_EVENT_MASK (1ull << MLX4_EVENT_TYPE_LOCAL_CATAS_ERROR) struct mlx4_eqe { u8 reserved1; @@ -264,7 +262,7 @@ static irqreturn_t mlx4_interrupt(int irq, void *dev_ptr) writel(priv->eq_table.clr_mask, priv->eq_table.clr_int); - for (i = 0; i < MLX4_EQ_CATAS; ++i) + for (i = 0; i < MLX4_NUM_EQ; ++i) work |= mlx4_eq_int(dev, &priv->eq_table.eq[i]); return IRQ_RETVAL(work); @@ -281,14 +279,6 @@ static irqreturn_t mlx4_msi_x_interrupt(int irq, void *eq_ptr) return IRQ_HANDLED; } -static irqreturn_t mlx4_catas_interrupt(int irq, void *dev_ptr) -{ - mlx4_handle_catas_err(dev_ptr); - - /* MSI-X vectors always belong to us */ - return IRQ_HANDLED; -} - static int mlx4_MAP_EQ(struct mlx4_dev *dev, u64 event_mask, int unmap, int eq_num) { @@ -490,11 +480,9 @@ static void mlx4_free_irqs(struct mlx4_dev *dev) if (eq_table->have_irq) free_irq(dev->pdev->irq, dev); - for (i = 0; i < MLX4_EQ_CATAS; ++i) + for (i = 0; i < MLX4_NUM_EQ; ++i) if (eq_table->eq[i].have_irq) free_irq(eq_table->eq[i].irq, eq_table->eq + i); - if (eq_table->eq[MLX4_EQ_CATAS].have_irq) - free_irq(eq_table->eq[MLX4_EQ_CATAS].irq, dev); } static int __devinit mlx4_map_clr_int(struct mlx4_dev *dev) @@ -598,32 +586,19 @@ int __devinit mlx4_init_eq_table(struct mlx4_dev *dev) if (dev->flags & MLX4_FLAG_MSI_X) { static const char *eq_name[] = { [MLX4_EQ_COMP] = DRV_NAME " (comp)", - [MLX4_EQ_ASYNC] = DRV_NAME " (async)", - [MLX4_EQ_CATAS] = DRV_NAME " (catas)" + [MLX4_EQ_ASYNC] = DRV_NAME " (async)" }; - err = mlx4_create_eq(dev, 1, MLX4_EQ_CATAS, - &priv->eq_table.eq[MLX4_EQ_CATAS]); - if (err) - goto err_out_async; - - for (i = 0; i < MLX4_EQ_CATAS; ++i) { + for (i = 0; i < MLX4_NUM_EQ; ++i) { err = request_irq(priv->eq_table.eq[i].irq, mlx4_msi_x_interrupt, 0, eq_name[i], priv->eq_table.eq + i); if (err) - goto err_out_catas; + goto err_out_async; priv->eq_table.eq[i].have_irq = 1; } - err = request_irq(priv->eq_table.eq[MLX4_EQ_CATAS].irq, - mlx4_catas_interrupt, 0, - eq_name[MLX4_EQ_CATAS], dev); - if (err) - goto err_out_catas; - - priv->eq_table.eq[MLX4_EQ_CATAS].have_irq = 1; } else { err = request_irq(dev->pdev->irq, mlx4_interrupt, IRQF_SHARED, DRV_NAME, dev); @@ -639,22 +614,11 @@ int __devinit mlx4_init_eq_table(struct mlx4_dev *dev) mlx4_warn(dev, "MAP_EQ for async EQ %d failed (%d)\n", priv->eq_table.eq[MLX4_EQ_ASYNC].eqn, err); - for (i = 0; i < MLX4_EQ_CATAS; ++i) + for (i = 0; i < MLX4_NUM_EQ; ++i) eq_set_ci(&priv->eq_table.eq[i], 1); - if (dev->flags & MLX4_FLAG_MSI_X) { - err = mlx4_MAP_EQ(dev, MLX4_CATAS_EVENT_MASK, 0, - priv->eq_table.eq[MLX4_EQ_CATAS].eqn); - if (err) - mlx4_warn(dev, "MAP_EQ for catas EQ %d failed (%d)\n", - priv->eq_table.eq[MLX4_EQ_CATAS].eqn, err); - } - return 0; -err_out_catas: - mlx4_free_eq(dev, &priv->eq_table.eq[MLX4_EQ_CATAS]); - err_out_async: mlx4_free_eq(dev, &priv->eq_table.eq[MLX4_EQ_ASYNC]); @@ -675,19 +639,13 @@ void mlx4_cleanup_eq_table(struct mlx4_dev *dev) struct mlx4_priv *priv = mlx4_priv(dev); int i; - if (dev->flags & MLX4_FLAG_MSI_X) - mlx4_MAP_EQ(dev, MLX4_CATAS_EVENT_MASK, 1, - priv->eq_table.eq[MLX4_EQ_CATAS].eqn); - mlx4_MAP_EQ(dev, MLX4_ASYNC_EVENT_MASK, 1, priv->eq_table.eq[MLX4_EQ_ASYNC].eqn); mlx4_free_irqs(dev); - for (i = 0; i < MLX4_EQ_CATAS; ++i) + for (i = 0; i < MLX4_NUM_EQ; ++i) mlx4_free_eq(dev, &priv->eq_table.eq[i]); - if (dev->flags & MLX4_FLAG_MSI_X) - mlx4_free_eq(dev, &priv->eq_table.eq[MLX4_EQ_CATAS]); mlx4_unmap_clr_int(dev); diff --git a/drivers/net/mlx4/intf.c b/drivers/net/mlx4/intf.c index 9ae951bf6aa..be5d9e90ccf 100644 --- a/drivers/net/mlx4/intf.c +++ b/drivers/net/mlx4/intf.c @@ -142,6 +142,7 @@ int mlx4_register_device(struct mlx4_dev *dev) mlx4_add_device(intf, priv); mutex_unlock(&intf_mutex); + mlx4_start_catas_poll(dev); return 0; } @@ -151,6 +152,7 @@ void mlx4_unregister_device(struct mlx4_dev *dev) struct mlx4_priv *priv = mlx4_priv(dev); struct mlx4_interface *intf; + mlx4_stop_catas_poll(dev); mutex_lock(&intf_mutex); list_for_each_entry(intf, &intf_list, list) diff --git a/drivers/net/mlx4/main.c b/drivers/net/mlx4/main.c index a4f2e0475a7..4dc9dc19b71 100644 --- a/drivers/net/mlx4/main.c +++ b/drivers/net/mlx4/main.c @@ -78,7 +78,7 @@ static const char mlx4_version[] __devinitdata = static struct mlx4_profile default_profile = { .num_qp = 1 << 16, .num_srq = 1 << 16, - .rdmarc_per_qp = 4, + .rdmarc_per_qp = 1 << 4, .num_cq = 1 << 16, .num_mcg = 1 << 13, .num_mpt = 1 << 17, @@ -583,13 +583,11 @@ static int __devinit mlx4_setup_hca(struct mlx4_dev *dev) goto err_pd_table_free; } - mlx4_map_catas_buf(dev); - err = mlx4_init_eq_table(dev); if (err) { mlx4_err(dev, "Failed to initialize " "event queue table, aborting.\n"); - goto err_catas_buf; + goto err_mr_table_free; } err = mlx4_cmd_use_events(dev); @@ -659,8 +657,7 @@ err_cmd_poll: err_eq_table_free: mlx4_cleanup_eq_table(dev); -err_catas_buf: - mlx4_unmap_catas_buf(dev); +err_mr_table_free: mlx4_cleanup_mr_table(dev); err_pd_table_free: @@ -836,9 +833,6 @@ err_cleanup: mlx4_cleanup_cq_table(dev); mlx4_cmd_use_polling(dev); mlx4_cleanup_eq_table(dev); - - mlx4_unmap_catas_buf(dev); - mlx4_cleanup_mr_table(dev); mlx4_cleanup_pd_table(dev); mlx4_cleanup_uar_table(dev); @@ -885,9 +879,6 @@ static void __devexit mlx4_remove_one(struct pci_dev *pdev) mlx4_cleanup_cq_table(dev); mlx4_cmd_use_polling(dev); mlx4_cleanup_eq_table(dev); - - mlx4_unmap_catas_buf(dev); - mlx4_cleanup_mr_table(dev); mlx4_cleanup_pd_table(dev); @@ -908,6 +899,12 @@ static void __devexit mlx4_remove_one(struct pci_dev *pdev) } } +int mlx4_restart_one(struct pci_dev *pdev) +{ + mlx4_remove_one(pdev); + return mlx4_init_one(pdev, NULL); +} + static struct pci_device_id mlx4_pci_table[] = { { PCI_VDEVICE(MELLANOX, 0x6340) }, /* MT25408 "Hermon" SDR */ { PCI_VDEVICE(MELLANOX, 0x634a) }, /* MT25408 "Hermon" DDR */ @@ -930,6 +927,10 @@ static int __init mlx4_init(void) { int ret; + ret = mlx4_catas_init(); + if (ret) + return ret; + ret = pci_register_driver(&mlx4_driver); return ret < 0 ? ret : 0; } @@ -937,6 +938,7 @@ static int __init mlx4_init(void) static void __exit mlx4_cleanup(void) { pci_unregister_driver(&mlx4_driver); + mlx4_catas_cleanup(); } module_init(mlx4_init); diff --git a/drivers/net/mlx4/mlx4.h b/drivers/net/mlx4/mlx4.h index d9c91a71fc8..be304a7c2c9 100644 --- a/drivers/net/mlx4/mlx4.h +++ b/drivers/net/mlx4/mlx4.h @@ -39,6 +39,7 @@ #include <linux/mutex.h> #include <linux/radix-tree.h> +#include <linux/timer.h> #include <linux/mlx4/device.h> #include <linux/mlx4/doorbell.h> @@ -67,7 +68,6 @@ enum { enum { MLX4_EQ_ASYNC, MLX4_EQ_COMP, - MLX4_EQ_CATAS, MLX4_NUM_EQ }; @@ -248,7 +248,8 @@ struct mlx4_mcg_table { struct mlx4_catas_err { u32 __iomem *map; - int size; + struct timer_list timer; + struct list_head list; }; struct mlx4_priv { @@ -311,9 +312,11 @@ void mlx4_cleanup_qp_table(struct mlx4_dev *dev); void mlx4_cleanup_srq_table(struct mlx4_dev *dev); void mlx4_cleanup_mcg_table(struct mlx4_dev *dev); -void mlx4_map_catas_buf(struct mlx4_dev *dev); -void mlx4_unmap_catas_buf(struct mlx4_dev *dev); - +void mlx4_start_catas_poll(struct mlx4_dev *dev); +void mlx4_stop_catas_poll(struct mlx4_dev *dev); +int mlx4_catas_init(void); +void mlx4_catas_cleanup(void); +int mlx4_restart_one(struct pci_dev *pdev); int mlx4_register_device(struct mlx4_dev *dev); void mlx4_unregister_device(struct mlx4_dev *dev); void mlx4_dispatch_event(struct mlx4_dev *dev, enum mlx4_event type, diff --git a/drivers/net/ni5010.c b/drivers/net/ni5010.c index 3d5b4232f65..22a3b3dc7d8 100644 --- a/drivers/net/ni5010.c +++ b/drivers/net/ni5010.c @@ -670,14 +670,10 @@ static void ni5010_set_multicast_list(struct net_device *dev) PRINTK2((KERN_DEBUG "%s: entering set_multicast_list\n", dev->name)); - if (dev->flags&IFF_PROMISC || dev->flags&IFF_ALLMULTI) { + if (dev->flags&IFF_PROMISC || dev->flags&IFF_ALLMULTI || dev->mc_list) { dev->flags |= IFF_PROMISC; outb(RMD_PROMISC, EDLC_RMODE); /* Enable promiscuous mode */ PRINTK((KERN_DEBUG "%s: Entering promiscuous mode\n", dev->name)); - } else if (dev->mc_list) { - /* Sorry, multicast not supported */ - PRINTK((KERN_DEBUG "%s: No multicast, entering broadcast mode\n", dev->name)); - outb(RMD_BROADCAST, EDLC_RMODE); } else { PRINTK((KERN_DEBUG "%s: Entering broadcast mode\n", dev->name)); outb(RMD_BROADCAST, EDLC_RMODE); /* Disable promiscuous mode, use normal mode */ diff --git a/drivers/net/ns83820.c b/drivers/net/ns83820.c index 104aab3c957..ea80e6cb3de 100644 --- a/drivers/net/ns83820.c +++ b/drivers/net/ns83820.c @@ -1582,7 +1582,7 @@ static void ns83820_set_multicast(struct net_device *ndev) else and_mask &= ~(RFCR_AAU | RFCR_AAM); - if (ndev->flags & IFF_ALLMULTI) + if (ndev->flags & IFF_ALLMULTI || ndev->mc_count) or_mask |= RFCR_AAM; else and_mask &= ~RFCR_AAM; diff --git a/drivers/net/pcmcia/com20020_cs.c b/drivers/net/pcmcia/com20020_cs.c index 0d1c7a41c9c..ea9414c4d90 100644 --- a/drivers/net/pcmcia/com20020_cs.c +++ b/drivers/net/pcmcia/com20020_cs.c @@ -147,7 +147,7 @@ static int com20020_probe(struct pcmcia_device *p_dev) DEBUG(0, "com20020_attach()\n"); /* Create new network device */ - info = kmalloc(sizeof(struct com20020_dev_t), GFP_KERNEL); + info = kzalloc(sizeof(struct com20020_dev_t), GFP_KERNEL); if (!info) goto fail_alloc_info; @@ -155,7 +155,6 @@ static int com20020_probe(struct pcmcia_device *p_dev) if (!dev) goto fail_alloc_dev; - memset(info, 0, sizeof(struct com20020_dev_t)); lp = dev->priv; lp->timeout = timeout; lp->backplane = backplane; diff --git a/drivers/net/pcmcia/ibmtr_cs.c b/drivers/net/pcmcia/ibmtr_cs.c index 4ecb8ca5a99..4eafa4f42cf 100644 --- a/drivers/net/pcmcia/ibmtr_cs.c +++ b/drivers/net/pcmcia/ibmtr_cs.c @@ -146,9 +146,8 @@ static int __devinit ibmtr_attach(struct pcmcia_device *link) DEBUG(0, "ibmtr_attach()\n"); /* Create new token-ring device */ - info = kmalloc(sizeof(*info), GFP_KERNEL); + info = kzalloc(sizeof(*info), GFP_KERNEL); if (!info) return -ENOMEM; - memset(info,0,sizeof(*info)); dev = alloc_trdev(sizeof(struct tok_info)); if (!dev) { kfree(info); diff --git a/drivers/net/phy/vitesse.c b/drivers/net/phy/vitesse.c index 596222b260d..6a538564791 100644 --- a/drivers/net/phy/vitesse.c +++ b/drivers/net/phy/vitesse.c @@ -21,6 +21,10 @@ /* Vitesse Extended Control Register 1 */ #define MII_VSC8244_EXT_CON1 0x17 #define MII_VSC8244_EXTCON1_INIT 0x0000 +#define MII_VSC8244_EXTCON1_TX_SKEW_MASK 0x0c00 +#define MII_VSC8244_EXTCON1_RX_SKEW_MASK 0x0300 +#define MII_VSC8244_EXTCON1_TX_SKEW 0x0800 +#define MII_VSC8244_EXTCON1_RX_SKEW 0x0200 /* Vitesse Interrupt Mask Register */ #define MII_VSC8244_IMASK 0x19 @@ -39,7 +43,7 @@ /* Vitesse Auxiliary Control/Status Register */ #define MII_VSC8244_AUX_CONSTAT 0x1c -#define MII_VSC8244_AUXCONSTAT_INIT 0x0004 +#define MII_VSC8244_AUXCONSTAT_INIT 0x0000 #define MII_VSC8244_AUXCONSTAT_DUPLEX 0x0020 #define MII_VSC8244_AUXCONSTAT_SPEED 0x0018 #define MII_VSC8244_AUXCONSTAT_GBIT 0x0010 @@ -51,6 +55,7 @@ MODULE_LICENSE("GPL"); static int vsc824x_config_init(struct phy_device *phydev) { + int extcon; int err; err = phy_write(phydev, MII_VSC8244_AUX_CONSTAT, @@ -58,14 +63,34 @@ static int vsc824x_config_init(struct phy_device *phydev) if (err < 0) return err; - err = phy_write(phydev, MII_VSC8244_EXT_CON1, - MII_VSC8244_EXTCON1_INIT); + extcon = phy_read(phydev, MII_VSC8244_EXT_CON1); + + if (extcon < 0) + return err; + + extcon &= ~(MII_VSC8244_EXTCON1_TX_SKEW_MASK | + MII_VSC8244_EXTCON1_RX_SKEW_MASK); + + if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) + extcon |= (MII_VSC8244_EXTCON1_TX_SKEW | + MII_VSC8244_EXTCON1_RX_SKEW); + + err = phy_write(phydev, MII_VSC8244_EXT_CON1, extcon); + return err; } static int vsc824x_ack_interrupt(struct phy_device *phydev) { - int err = phy_read(phydev, MII_VSC8244_ISTAT); + int err = 0; + + /* + * Don't bother to ACK the interrupts if interrupts + * are disabled. The 824x cannot clear the interrupts + * if they are disabled. + */ + if (phydev->interrupts == PHY_INTERRUPT_ENABLED) + err = phy_read(phydev, MII_VSC8244_ISTAT); return (err < 0) ? err : 0; } @@ -77,8 +102,19 @@ static int vsc824x_config_intr(struct phy_device *phydev) if (phydev->interrupts == PHY_INTERRUPT_ENABLED) err = phy_write(phydev, MII_VSC8244_IMASK, MII_VSC8244_IMASK_MASK); - else + else { + /* + * The Vitesse PHY cannot clear the interrupt + * once it has disabled them, so we clear them first + */ + err = phy_read(phydev, MII_VSC8244_ISTAT); + + if (err) + return err; + err = phy_write(phydev, MII_VSC8244_IMASK, 0); + } + return err; } diff --git a/drivers/net/ppp_async.c b/drivers/net/ppp_async.c index caabbc408c3..27f5b904f48 100644 --- a/drivers/net/ppp_async.c +++ b/drivers/net/ppp_async.c @@ -159,12 +159,11 @@ ppp_asynctty_open(struct tty_struct *tty) int err; err = -ENOMEM; - ap = kmalloc(sizeof(*ap), GFP_KERNEL); + ap = kzalloc(sizeof(*ap), GFP_KERNEL); if (ap == 0) goto out; /* initialize the asyncppp structure */ - memset(ap, 0, sizeof(*ap)); ap->tty = tty; ap->mru = PPP_MRU; spin_lock_init(&ap->xmit_lock); diff --git a/drivers/net/ppp_deflate.c b/drivers/net/ppp_deflate.c index 72c8d6628f5..eb98b661efb 100644 --- a/drivers/net/ppp_deflate.c +++ b/drivers/net/ppp_deflate.c @@ -121,12 +121,11 @@ static void *z_comp_alloc(unsigned char *options, int opt_len) if (w_size < DEFLATE_MIN_SIZE || w_size > DEFLATE_MAX_SIZE) return NULL; - state = kmalloc(sizeof(*state), + state = kzalloc(sizeof(*state), GFP_KERNEL); if (state == NULL) return NULL; - memset (state, 0, sizeof (struct ppp_deflate_state)); state->strm.next_in = NULL; state->w_size = w_size; state->strm.workspace = vmalloc(zlib_deflate_workspacesize()); @@ -341,11 +340,10 @@ static void *z_decomp_alloc(unsigned char *options, int opt_len) if (w_size < DEFLATE_MIN_SIZE || w_size > DEFLATE_MAX_SIZE) return NULL; - state = kmalloc(sizeof(*state), GFP_KERNEL); + state = kzalloc(sizeof(*state), GFP_KERNEL); if (state == NULL) return NULL; - memset (state, 0, sizeof (struct ppp_deflate_state)); state->w_size = w_size; state->strm.next_out = NULL; state->strm.workspace = kmalloc(zlib_inflate_workspacesize(), diff --git a/drivers/net/ppp_generic.c b/drivers/net/ppp_generic.c index 3ef0092dc09..ef3325b6923 100644 --- a/drivers/net/ppp_generic.c +++ b/drivers/net/ppp_generic.c @@ -2684,8 +2684,7 @@ static void __exit ppp_cleanup(void) if (atomic_read(&ppp_unit_count) || atomic_read(&channel_count)) printk(KERN_ERR "PPP: removing module but units remain!\n"); cardmap_destroy(&all_ppp_units); - if (unregister_chrdev(PPP_MAJOR, "ppp") != 0) - printk(KERN_ERR "PPP: failed to unregister PPP device\n"); + unregister_chrdev(PPP_MAJOR, "ppp"); device_destroy(ppp_class, MKDEV(PPP_MAJOR, 0)); class_destroy(ppp_class); } diff --git a/drivers/net/ppp_mppe.c b/drivers/net/ppp_mppe.c index d5bdd257465..f79cf87a2bf 100644 --- a/drivers/net/ppp_mppe.c +++ b/drivers/net/ppp_mppe.c @@ -200,11 +200,10 @@ static void *mppe_alloc(unsigned char *options, int optlen) || options[0] != CI_MPPE || options[1] != CILEN_MPPE) goto out; - state = kmalloc(sizeof(*state), GFP_KERNEL); + state = kzalloc(sizeof(*state), GFP_KERNEL); if (state == NULL) goto out; - memset(state, 0, sizeof(*state)); state->arc4 = crypto_alloc_blkcipher("ecb(arc4)", 0, CRYPTO_ALG_ASYNC); if (IS_ERR(state->arc4)) { diff --git a/drivers/net/ppp_synctty.c b/drivers/net/ppp_synctty.c index 5918fab3834..ce64032a465 100644 --- a/drivers/net/ppp_synctty.c +++ b/drivers/net/ppp_synctty.c @@ -207,13 +207,12 @@ ppp_sync_open(struct tty_struct *tty) struct syncppp *ap; int err; - ap = kmalloc(sizeof(*ap), GFP_KERNEL); + ap = kzalloc(sizeof(*ap), GFP_KERNEL); err = -ENOMEM; if (ap == 0) goto out; /* initialize the syncppp structure */ - memset(ap, 0, sizeof(*ap)); ap->tty = tty; ap->mru = PPP_MRU; spin_lock_init(&ap->xmit_lock); diff --git a/drivers/net/pppol2tp.c b/drivers/net/pppol2tp.c index 5891a0fbdc8..f87176055d0 100644 --- a/drivers/net/pppol2tp.c +++ b/drivers/net/pppol2tp.c @@ -824,6 +824,7 @@ static int pppol2tp_sendmsg(struct kiocb *iocb, struct socket *sock, struct msgh struct pppol2tp_session *session; struct pppol2tp_tunnel *tunnel; struct udphdr *uh; + unsigned int len; error = -ENOTCONN; if (sock_flag(sk, SOCK_DEAD) || !(sk->sk_state & PPPOX_CONNECTED)) @@ -912,14 +913,15 @@ static int pppol2tp_sendmsg(struct kiocb *iocb, struct socket *sock, struct msgh } /* Queue the packet to IP for output */ + len = skb->len; error = ip_queue_xmit(skb, 1); /* Update stats */ if (error >= 0) { tunnel->stats.tx_packets++; - tunnel->stats.tx_bytes += skb->len; + tunnel->stats.tx_bytes += len; session->stats.tx_packets++; - session->stats.tx_bytes += skb->len; + session->stats.tx_bytes += len; } else { tunnel->stats.tx_errors++; session->stats.tx_errors++; @@ -958,6 +960,7 @@ static int pppol2tp_xmit(struct ppp_channel *chan, struct sk_buff *skb) __wsum csum = 0; struct sk_buff *skb2 = NULL; struct udphdr *uh; + unsigned int len; if (sock_flag(sk, SOCK_DEAD) || !(sk->sk_state & PPPOX_CONNECTED)) goto abort; @@ -1046,18 +1049,25 @@ static int pppol2tp_xmit(struct ppp_channel *chan, struct sk_buff *skb) printk("\n"); } + memset(&(IPCB(skb2)->opt), 0, sizeof(IPCB(skb2)->opt)); + IPCB(skb2)->flags &= ~(IPSKB_XFRM_TUNNEL_SIZE | IPSKB_XFRM_TRANSFORMED | + IPSKB_REROUTED); + nf_reset(skb2); + /* Get routing info from the tunnel socket */ + dst_release(skb2->dst); skb2->dst = sk_dst_get(sk_tun); /* Queue the packet to IP for output */ + len = skb2->len; rc = ip_queue_xmit(skb2, 1); /* Update stats */ if (rc >= 0) { tunnel->stats.tx_packets++; - tunnel->stats.tx_bytes += skb2->len; + tunnel->stats.tx_bytes += len; session->stats.tx_packets++; - session->stats.tx_bytes += skb2->len; + session->stats.tx_bytes += len; } else { tunnel->stats.tx_errors++; session->stats.tx_errors++; diff --git a/drivers/net/saa9730.c b/drivers/net/saa9730.c index 451486b32f2..7dae4d40497 100644 --- a/drivers/net/saa9730.c +++ b/drivers/net/saa9730.c @@ -940,15 +940,14 @@ static void lan_saa9730_set_multicast(struct net_device *dev) CAM_CONTROL_GROUP_ACC | CAM_CONTROL_BROAD_ACC, &lp->lan_saa9730_regs->CamCtl); } else { - if (dev->flags & IFF_ALLMULTI) { + if (dev->flags & IFF_ALLMULTI || dev->mc_count) { /* accept all multicast packets */ - writel(CAM_CONTROL_COMP_EN | CAM_CONTROL_GROUP_ACC | - CAM_CONTROL_BROAD_ACC, - &lp->lan_saa9730_regs->CamCtl); - } else { /* * Will handle the multicast stuff later. -carstenl */ + writel(CAM_CONTROL_COMP_EN | CAM_CONTROL_GROUP_ACC | + CAM_CONTROL_BROAD_ACC, + &lp->lan_saa9730_regs->CamCtl); } } diff --git a/drivers/net/shaper.c b/drivers/net/shaper.c index e886e8d7cfd..4c3d98ff4cd 100644 --- a/drivers/net/shaper.c +++ b/drivers/net/shaper.c @@ -600,10 +600,9 @@ static int __init shaper_init(void) return -ENODEV; alloc_size = sizeof(*dev) * shapers; - devs = kmalloc(alloc_size, GFP_KERNEL); + devs = kzalloc(alloc_size, GFP_KERNEL); if (!devs) return -ENOMEM; - memset(devs, 0, alloc_size); for (i = 0; i < shapers; i++) { diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c index a2f32151559..13f08a390e1 100644 --- a/drivers/net/sky2.c +++ b/drivers/net/sky2.c @@ -692,6 +692,7 @@ static void sky2_mac_init(struct sky2_hw *hw, unsigned port) { struct sky2_port *sky2 = netdev_priv(hw->dev[port]); u16 reg; + u32 rx_reg; int i; const u8 *addr = hw->dev[port]->dev_addr; @@ -768,11 +769,11 @@ static void sky2_mac_init(struct sky2_hw *hw, unsigned port) /* Configure Rx MAC FIFO */ sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_CLR); - reg = GMF_OPER_ON | GMF_RX_F_FL_ON; + rx_reg = GMF_OPER_ON | GMF_RX_F_FL_ON; if (hw->chip_id == CHIP_ID_YUKON_EX) - reg |= GMF_RX_OVER_ON; + rx_reg |= GMF_RX_OVER_ON; - sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), reg); + sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), rx_reg); /* Flush Rx MAC FIFO on any flow control or error */ sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), GMR_FS_ANY_ERR); diff --git a/drivers/net/sunvnet.c b/drivers/net/sunvnet.c index 8a667c13fae..61f98251fea 100644 --- a/drivers/net/sunvnet.c +++ b/drivers/net/sunvnet.c @@ -12,6 +12,7 @@ #include <linux/netdevice.h> #include <linux/ethtool.h> #include <linux/etherdevice.h> +#include <linux/mutex.h> #include <asm/vio.h> #include <asm/ldc.h> @@ -458,6 +459,22 @@ static int vnet_nack(struct vnet_port *port, void *msgbuf) return 0; } +static int handle_mcast(struct vnet_port *port, void *msgbuf) +{ + struct vio_net_mcast_info *pkt = msgbuf; + + if (pkt->tag.stype != VIO_SUBTYPE_ACK) + printk(KERN_ERR PFX "%s: Got unexpected MCAST reply " + "[%02x:%02x:%04x:%08x]\n", + port->vp->dev->name, + pkt->tag.type, + pkt->tag.stype, + pkt->tag.stype_env, + pkt->tag.sid); + + return 0; +} + static void maybe_tx_wakeup(struct vnet *vp) { struct net_device *dev = vp->dev; @@ -497,6 +514,8 @@ static void vnet_event(void *arg, int event) vio_link_state_change(vio, event); spin_unlock_irqrestore(&vio->lock, flags); + if (event == LDC_EVENT_RESET) + vio_port_up(vio); return; } @@ -541,7 +560,10 @@ static void vnet_event(void *arg, int event) err = vnet_nack(port, &msgbuf); } } else if (msgbuf.tag.type == VIO_TYPE_CTRL) { - err = vio_control_pkt_engine(vio, &msgbuf); + if (msgbuf.tag.stype_env == VNET_MCAST_INFO) + err = handle_mcast(port, &msgbuf); + else + err = vio_control_pkt_engine(vio, &msgbuf); if (err) break; } else { @@ -728,9 +750,122 @@ static int vnet_close(struct net_device *dev) return 0; } +static struct vnet_mcast_entry *__vnet_mc_find(struct vnet *vp, u8 *addr) +{ + struct vnet_mcast_entry *m; + + for (m = vp->mcast_list; m; m = m->next) { + if (!memcmp(m->addr, addr, ETH_ALEN)) + return m; + } + return NULL; +} + +static void __update_mc_list(struct vnet *vp, struct net_device *dev) +{ + struct dev_addr_list *p; + + for (p = dev->mc_list; p; p = p->next) { + struct vnet_mcast_entry *m; + + m = __vnet_mc_find(vp, p->dmi_addr); + if (m) { + m->hit = 1; + continue; + } + + if (!m) { + m = kzalloc(sizeof(*m), GFP_ATOMIC); + if (!m) + continue; + memcpy(m->addr, p->dmi_addr, ETH_ALEN); + m->hit = 1; + + m->next = vp->mcast_list; + vp->mcast_list = m; + } + } +} + +static void __send_mc_list(struct vnet *vp, struct vnet_port *port) +{ + struct vio_net_mcast_info info; + struct vnet_mcast_entry *m, **pp; + int n_addrs; + + memset(&info, 0, sizeof(info)); + + info.tag.type = VIO_TYPE_CTRL; + info.tag.stype = VIO_SUBTYPE_INFO; + info.tag.stype_env = VNET_MCAST_INFO; + info.tag.sid = vio_send_sid(&port->vio); + info.set = 1; + + n_addrs = 0; + for (m = vp->mcast_list; m; m = m->next) { + if (m->sent) + continue; + m->sent = 1; + memcpy(&info.mcast_addr[n_addrs * ETH_ALEN], + m->addr, ETH_ALEN); + if (++n_addrs == VNET_NUM_MCAST) { + info.count = n_addrs; + + (void) vio_ldc_send(&port->vio, &info, + sizeof(info)); + n_addrs = 0; + } + } + if (n_addrs) { + info.count = n_addrs; + (void) vio_ldc_send(&port->vio, &info, sizeof(info)); + } + + info.set = 0; + + n_addrs = 0; + pp = &vp->mcast_list; + while ((m = *pp) != NULL) { + if (m->hit) { + m->hit = 0; + pp = &m->next; + continue; + } + + memcpy(&info.mcast_addr[n_addrs * ETH_ALEN], + m->addr, ETH_ALEN); + if (++n_addrs == VNET_NUM_MCAST) { + info.count = n_addrs; + (void) vio_ldc_send(&port->vio, &info, + sizeof(info)); + n_addrs = 0; + } + + *pp = m->next; + kfree(m); + } + if (n_addrs) { + info.count = n_addrs; + (void) vio_ldc_send(&port->vio, &info, sizeof(info)); + } +} + static void vnet_set_rx_mode(struct net_device *dev) { - /* XXX Implement multicast support XXX */ + struct vnet *vp = netdev_priv(dev); + struct vnet_port *port; + unsigned long flags; + + spin_lock_irqsave(&vp->lock, flags); + if (!list_empty(&vp->port_list)) { + port = list_entry(vp->port_list.next, struct vnet_port, list); + + if (port->switch_port) { + __update_mc_list(vp, dev); + __send_mc_list(vp, port); + } + } + spin_unlock_irqrestore(&vp->lock, flags); } static int vnet_change_mtu(struct net_device *dev, int new_mtu) @@ -875,6 +1010,115 @@ err_out: return err; } +static LIST_HEAD(vnet_list); +static DEFINE_MUTEX(vnet_list_mutex); + +static struct vnet * __devinit vnet_new(const u64 *local_mac) +{ + struct net_device *dev; + struct vnet *vp; + int err, i; + + dev = alloc_etherdev(sizeof(*vp)); + if (!dev) { + printk(KERN_ERR PFX "Etherdev alloc failed, aborting.\n"); + return ERR_PTR(-ENOMEM); + } + + for (i = 0; i < ETH_ALEN; i++) + dev->dev_addr[i] = (*local_mac >> (5 - i) * 8) & 0xff; + + memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len); + + vp = netdev_priv(dev); + + spin_lock_init(&vp->lock); + vp->dev = dev; + + INIT_LIST_HEAD(&vp->port_list); + for (i = 0; i < VNET_PORT_HASH_SIZE; i++) + INIT_HLIST_HEAD(&vp->port_hash[i]); + INIT_LIST_HEAD(&vp->list); + vp->local_mac = *local_mac; + + dev->open = vnet_open; + dev->stop = vnet_close; + dev->set_multicast_list = vnet_set_rx_mode; + dev->set_mac_address = vnet_set_mac_addr; + dev->tx_timeout = vnet_tx_timeout; + dev->ethtool_ops = &vnet_ethtool_ops; + dev->watchdog_timeo = VNET_TX_TIMEOUT; + dev->change_mtu = vnet_change_mtu; + dev->hard_start_xmit = vnet_start_xmit; + + err = register_netdev(dev); + if (err) { + printk(KERN_ERR PFX "Cannot register net device, " + "aborting.\n"); + goto err_out_free_dev; + } + + printk(KERN_INFO "%s: Sun LDOM vnet ", dev->name); + + for (i = 0; i < 6; i++) + printk("%2.2x%c", dev->dev_addr[i], i == 5 ? '\n' : ':'); + + list_add(&vp->list, &vnet_list); + + return vp; + +err_out_free_dev: + free_netdev(dev); + + return ERR_PTR(err); +} + +static struct vnet * __devinit vnet_find_or_create(const u64 *local_mac) +{ + struct vnet *iter, *vp; + + mutex_lock(&vnet_list_mutex); + vp = NULL; + list_for_each_entry(iter, &vnet_list, list) { + if (iter->local_mac == *local_mac) { + vp = iter; + break; + } + } + if (!vp) + vp = vnet_new(local_mac); + mutex_unlock(&vnet_list_mutex); + + return vp; +} + +static const char *local_mac_prop = "local-mac-address"; + +static struct vnet * __devinit vnet_find_parent(struct mdesc_handle *hp, + u64 port_node) +{ + const u64 *local_mac = NULL; + u64 a; + + mdesc_for_each_arc(a, hp, port_node, MDESC_ARC_TYPE_BACK) { + u64 target = mdesc_arc_target(hp, a); + const char *name; + + name = mdesc_get_property(hp, target, "name", NULL); + if (!name || strcmp(name, "network")) + continue; + + local_mac = mdesc_get_property(hp, target, + local_mac_prop, NULL); + if (local_mac) + break; + } + if (!local_mac) + return ERR_PTR(-ENODEV); + + return vnet_find_or_create(local_mac); +} + static struct ldc_channel_config vnet_ldc_cfg = { .event = vnet_event, .mtu = 64, @@ -887,6 +1131,14 @@ static struct vio_driver_ops vnet_vio_ops = { .handshake_complete = vnet_handshake_complete, }; +static void print_version(void) +{ + static int version_printed; + + if (version_printed++ == 0) + printk(KERN_INFO "%s", version); +} + const char *remote_macaddr_prop = "remote-mac-address"; static int __devinit vnet_port_probe(struct vio_dev *vdev, @@ -899,14 +1151,17 @@ static int __devinit vnet_port_probe(struct vio_dev *vdev, const u64 *rmac; int len, i, err, switch_port; - vp = dev_get_drvdata(vdev->dev.parent); - if (!vp) { - printk(KERN_ERR PFX "Cannot find port parent vnet.\n"); - return -ENODEV; - } + print_version(); hp = mdesc_grab(); + vp = vnet_find_parent(hp, vdev->mp); + if (IS_ERR(vp)) { + printk(KERN_ERR PFX "Cannot find port parent vnet.\n"); + err = PTR_ERR(vp); + goto err_out_put_mdesc; + } + rmac = mdesc_get_property(hp, vdev->mp, remote_macaddr_prop, &len); err = -ENODEV; if (!rmac) { @@ -947,6 +1202,7 @@ static int __devinit vnet_port_probe(struct vio_dev *vdev, switch_port = 0; if (mdesc_get_property(hp, vdev->mp, "switch-port", NULL) != NULL) switch_port = 1; + port->switch_port = switch_port; spin_lock_irqsave(&vp->lock, flags); if (switch_port) @@ -1013,7 +1269,7 @@ static struct vio_device_id vnet_port_match[] = { }, {}, }; -MODULE_DEVICE_TABLE(vio, vnet_match); +MODULE_DEVICE_TABLE(vio, vnet_port_match); static struct vio_driver vnet_port_driver = { .id_table = vnet_port_match, @@ -1025,139 +1281,14 @@ static struct vio_driver vnet_port_driver = { } }; -const char *local_mac_prop = "local-mac-address"; - -static int __devinit vnet_probe(struct vio_dev *vdev, - const struct vio_device_id *id) -{ - static int vnet_version_printed; - struct mdesc_handle *hp; - struct net_device *dev; - struct vnet *vp; - const u64 *mac; - int err, i, len; - - if (vnet_version_printed++ == 0) - printk(KERN_INFO "%s", version); - - hp = mdesc_grab(); - - mac = mdesc_get_property(hp, vdev->mp, local_mac_prop, &len); - if (!mac) { - printk(KERN_ERR PFX "vnet lacks %s property.\n", - local_mac_prop); - err = -ENODEV; - goto err_out; - } - - dev = alloc_etherdev(sizeof(*vp)); - if (!dev) { - printk(KERN_ERR PFX "Etherdev alloc failed, aborting.\n"); - err = -ENOMEM; - goto err_out; - } - - for (i = 0; i < ETH_ALEN; i++) - dev->dev_addr[i] = (*mac >> (5 - i) * 8) & 0xff; - - memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len); - - SET_NETDEV_DEV(dev, &vdev->dev); - - vp = netdev_priv(dev); - - spin_lock_init(&vp->lock); - vp->dev = dev; - vp->vdev = vdev; - - INIT_LIST_HEAD(&vp->port_list); - for (i = 0; i < VNET_PORT_HASH_SIZE; i++) - INIT_HLIST_HEAD(&vp->port_hash[i]); - - dev->open = vnet_open; - dev->stop = vnet_close; - dev->set_multicast_list = vnet_set_rx_mode; - dev->set_mac_address = vnet_set_mac_addr; - dev->tx_timeout = vnet_tx_timeout; - dev->ethtool_ops = &vnet_ethtool_ops; - dev->watchdog_timeo = VNET_TX_TIMEOUT; - dev->change_mtu = vnet_change_mtu; - dev->hard_start_xmit = vnet_start_xmit; - - err = register_netdev(dev); - if (err) { - printk(KERN_ERR PFX "Cannot register net device, " - "aborting.\n"); - goto err_out_free_dev; - } - - printk(KERN_INFO "%s: Sun LDOM vnet ", dev->name); - - for (i = 0; i < 6; i++) - printk("%2.2x%c", dev->dev_addr[i], i == 5 ? '\n' : ':'); - - dev_set_drvdata(&vdev->dev, vp); - - mdesc_release(hp); - - return 0; - -err_out_free_dev: - free_netdev(dev); - -err_out: - mdesc_release(hp); - return err; -} - -static int vnet_remove(struct vio_dev *vdev) -{ - - struct vnet *vp = dev_get_drvdata(&vdev->dev); - - if (vp) { - /* XXX unregister port, or at least check XXX */ - unregister_netdevice(vp->dev); - dev_set_drvdata(&vdev->dev, NULL); - } - return 0; -} - -static struct vio_device_id vnet_match[] = { - { - .type = "network", - }, - {}, -}; -MODULE_DEVICE_TABLE(vio, vnet_match); - -static struct vio_driver vnet_driver = { - .id_table = vnet_match, - .probe = vnet_probe, - .remove = vnet_remove, - .driver = { - .name = "vnet", - .owner = THIS_MODULE, - } -}; - static int __init vnet_init(void) { - int err = vio_register_driver(&vnet_driver); - - if (!err) { - err = vio_register_driver(&vnet_port_driver); - if (err) - vio_unregister_driver(&vnet_driver); - } - - return err; + return vio_register_driver(&vnet_port_driver); } static void __exit vnet_exit(void) { vio_unregister_driver(&vnet_port_driver); - vio_unregister_driver(&vnet_driver); } module_init(vnet_init); diff --git a/drivers/net/sunvnet.h b/drivers/net/sunvnet.h index 1c887302d46..d347a5bf24b 100644 --- a/drivers/net/sunvnet.h +++ b/drivers/net/sunvnet.h @@ -30,6 +30,8 @@ struct vnet_port { struct hlist_node hash; u8 raddr[ETH_ALEN]; + u8 switch_port; + u8 __pad; struct vnet *vp; @@ -53,6 +55,13 @@ static inline unsigned int vnet_hashfn(u8 *mac) return val & (VNET_PORT_HASH_MASK); } +struct vnet_mcast_entry { + u8 addr[ETH_ALEN]; + u8 sent; + u8 hit; + struct vnet_mcast_entry *next; +}; + struct vnet { /* Protects port_list and port_hash. */ spinlock_t lock; @@ -60,11 +69,15 @@ struct vnet { struct net_device *dev; u32 msg_enable; - struct vio_dev *vdev; struct list_head port_list; struct hlist_head port_hash[VNET_PORT_HASH_SIZE]; + + struct vnet_mcast_entry *mcast_list; + + struct list_head list; + u64 local_mac; }; #endif /* _SUNVNET_H */ diff --git a/drivers/net/tc35815.c b/drivers/net/tc35815.c index 75655add3f3..7f94ca93098 100644 --- a/drivers/net/tc35815.c +++ b/drivers/net/tc35815.c @@ -626,7 +626,7 @@ static int __devinit tc35815_read_plat_dev_addr(struct net_device *dev) return -ENODEV; } #else -static int __devinit tc35815_read_plat_dev_addr(struct device *dev) +static int __devinit tc35815_read_plat_dev_addr(struct net_device *dev) { return -ENODEV; } diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c index 5ee14764fd7..887b9a5cfe4 100644 --- a/drivers/net/tg3.c +++ b/drivers/net/tg3.c @@ -64,8 +64,8 @@ #define DRV_MODULE_NAME "tg3" #define PFX DRV_MODULE_NAME ": " -#define DRV_MODULE_VERSION "3.78" -#define DRV_MODULE_RELDATE "July 11, 2007" +#define DRV_MODULE_VERSION "3.79" +#define DRV_MODULE_RELDATE "July 18, 2007" #define TG3_DEF_MAC_MODE 0 #define TG3_DEF_RX_MODE 0 @@ -4847,6 +4847,59 @@ static int tg3_poll_fw(struct tg3 *tp) return 0; } +/* Save PCI command register before chip reset */ +static void tg3_save_pci_state(struct tg3 *tp) +{ + u32 val; + + pci_read_config_dword(tp->pdev, TG3PCI_COMMAND, &val); + tp->pci_cmd = val; +} + +/* Restore PCI state after chip reset */ +static void tg3_restore_pci_state(struct tg3 *tp) +{ + u32 val; + + /* Re-enable indirect register accesses. */ + pci_write_config_dword(tp->pdev, TG3PCI_MISC_HOST_CTRL, + tp->misc_host_ctrl); + + /* Set MAX PCI retry to zero. */ + val = (PCISTATE_ROM_ENABLE | PCISTATE_ROM_RETRY_ENABLE); + if (tp->pci_chip_rev_id == CHIPREV_ID_5704_A0 && + (tp->tg3_flags & TG3_FLAG_PCIX_MODE)) + val |= PCISTATE_RETRY_SAME_DMA; + pci_write_config_dword(tp->pdev, TG3PCI_PCISTATE, val); + + pci_write_config_dword(tp->pdev, TG3PCI_COMMAND, tp->pci_cmd); + + /* Make sure PCI-X relaxed ordering bit is clear. */ + pci_read_config_dword(tp->pdev, TG3PCI_X_CAPS, &val); + val &= ~PCIX_CAPS_RELAXED_ORDERING; + pci_write_config_dword(tp->pdev, TG3PCI_X_CAPS, val); + + if (tp->tg3_flags2 & TG3_FLG2_5780_CLASS) { + u32 val; + + /* Chip reset on 5780 will reset MSI enable bit, + * so need to restore it. + */ + if (tp->tg3_flags2 & TG3_FLG2_USING_MSI) { + u16 ctrl; + + pci_read_config_word(tp->pdev, + tp->msi_cap + PCI_MSI_FLAGS, + &ctrl); + pci_write_config_word(tp->pdev, + tp->msi_cap + PCI_MSI_FLAGS, + ctrl | PCI_MSI_FLAGS_ENABLE); + val = tr32(MSGINT_MODE); + tw32(MSGINT_MODE, val | MSGINT_MODE_ENABLE); + } + } +} + static void tg3_stop_fw(struct tg3 *); /* tp->lock is held. */ @@ -4863,6 +4916,12 @@ static int tg3_chip_reset(struct tg3 *tp) */ tp->nvram_lock_cnt = 0; + /* GRC_MISC_CFG core clock reset will clear the memory + * enable bit in PCI register 4 and the MSI enable bit + * on some chips, so we save relevant registers here. + */ + tg3_save_pci_state(tp); + if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5752 || GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5755 || GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5787) @@ -4961,50 +5020,14 @@ static int tg3_chip_reset(struct tg3 *tp) pci_write_config_dword(tp->pdev, 0xd8, 0xf5000); } - /* Re-enable indirect register accesses. */ - pci_write_config_dword(tp->pdev, TG3PCI_MISC_HOST_CTRL, - tp->misc_host_ctrl); - - /* Set MAX PCI retry to zero. */ - val = (PCISTATE_ROM_ENABLE | PCISTATE_ROM_RETRY_ENABLE); - if (tp->pci_chip_rev_id == CHIPREV_ID_5704_A0 && - (tp->tg3_flags & TG3_FLAG_PCIX_MODE)) - val |= PCISTATE_RETRY_SAME_DMA; - pci_write_config_dword(tp->pdev, TG3PCI_PCISTATE, val); - - pci_restore_state(tp->pdev); + tg3_restore_pci_state(tp); tp->tg3_flags &= ~TG3_FLAG_CHIP_RESETTING; - /* Make sure PCI-X relaxed ordering bit is clear. */ - pci_read_config_dword(tp->pdev, TG3PCI_X_CAPS, &val); - val &= ~PCIX_CAPS_RELAXED_ORDERING; - pci_write_config_dword(tp->pdev, TG3PCI_X_CAPS, val); - - if (tp->tg3_flags2 & TG3_FLG2_5780_CLASS) { - u32 val; - - /* Chip reset on 5780 will reset MSI enable bit, - * so need to restore it. - */ - if (tp->tg3_flags2 & TG3_FLG2_USING_MSI) { - u16 ctrl; - - pci_read_config_word(tp->pdev, - tp->msi_cap + PCI_MSI_FLAGS, - &ctrl); - pci_write_config_word(tp->pdev, - tp->msi_cap + PCI_MSI_FLAGS, - ctrl | PCI_MSI_FLAGS_ENABLE); - val = tr32(MSGINT_MODE); - tw32(MSGINT_MODE, val | MSGINT_MODE_ENABLE); - } - + val = 0; + if (tp->tg3_flags2 & TG3_FLG2_5780_CLASS) val = tr32(MEMARB_MODE); - tw32(MEMARB_MODE, val | MEMARB_MODE_ENABLE); - - } else - tw32(MEMARB_MODE, MEMARB_MODE_ENABLE); + tw32(MEMARB_MODE, val | MEMARB_MODE_ENABLE); if (tp->pci_chip_rev_id == CHIPREV_ID_5750_A3) { tg3_stop_fw(tp); @@ -11978,7 +12001,6 @@ static int __devinit tg3_init_one(struct pci_dev *pdev, */ if ((tr32(HOSTCC_MODE) & HOSTCC_MODE_ENABLE) || (tr32(WDMAC_MODE) & WDMAC_MODE_ENABLE)) { - pci_save_state(tp->pdev); tw32(MEMARB_MODE, MEMARB_MODE_ENABLE); tg3_halt(tp, RESET_KIND_SHUTDOWN, 1); } @@ -12007,12 +12029,6 @@ static int __devinit tg3_init_one(struct pci_dev *pdev, tg3_init_coal(tp); - /* Now that we have fully setup the chip, save away a snapshot - * of the PCI config space. We need to restore this after - * GRC_MISC_CFG core clock resets and some resume events. - */ - pci_save_state(tp->pdev); - pci_set_drvdata(pdev, dev); err = register_netdev(dev); diff --git a/drivers/net/tg3.h b/drivers/net/tg3.h index d84e75e7365..5c21f49026c 100644 --- a/drivers/net/tg3.h +++ b/drivers/net/tg3.h @@ -2345,6 +2345,7 @@ struct tg3 { #define PHY_REV_BCM5411_X0 0x1 /* Found on Netgear GA302T */ u32 led_ctrl; + u32 pci_cmd; char board_part_number[24]; char fw_ver[16]; diff --git a/drivers/net/wan/c101.c b/drivers/net/wan/c101.c index 6b63b350cd5..8ead774d14c 100644 --- a/drivers/net/wan/c101.c +++ b/drivers/net/wan/c101.c @@ -315,12 +315,11 @@ static int __init c101_run(unsigned long irq, unsigned long winbase) return -ENODEV; } - card = kmalloc(sizeof(card_t), GFP_KERNEL); + card = kzalloc(sizeof(card_t), GFP_KERNEL); if (card == NULL) { printk(KERN_ERR "c101: unable to allocate memory\n"); return -ENOBUFS; } - memset(card, 0, sizeof(card_t)); card->dev = alloc_hdlcdev(card); if (!card->dev) { diff --git a/drivers/net/wan/cosa.c b/drivers/net/wan/cosa.c index 9ef49ce148b..26058b4f8f3 100644 --- a/drivers/net/wan/cosa.c +++ b/drivers/net/wan/cosa.c @@ -572,13 +572,11 @@ static int cosa_probe(int base, int irq, int dma) sprintf(cosa->name, "cosa%d", cosa->num); /* Initialize the per-channel data */ - cosa->chan = kmalloc(sizeof(struct channel_data)*cosa->nchannels, - GFP_KERNEL); + cosa->chan = kcalloc(cosa->nchannels, sizeof(struct channel_data), GFP_KERNEL); if (!cosa->chan) { err = -ENOMEM; goto err_out3; } - memset(cosa->chan, 0, sizeof(struct channel_data)*cosa->nchannels); for (i=0; i<cosa->nchannels; i++) { cosa->chan[i].cosa = cosa; cosa->chan[i].num = i; diff --git a/drivers/net/wan/cycx_main.c b/drivers/net/wan/cycx_main.c index 6e5f1c89851..a0e8611ad8e 100644 --- a/drivers/net/wan/cycx_main.c +++ b/drivers/net/wan/cycx_main.c @@ -113,12 +113,10 @@ static int __init cycx_init(void) /* Verify number of cards and allocate adapter data space */ cycx_ncards = min_t(int, cycx_ncards, CYCX_MAX_CARDS); cycx_ncards = max_t(int, cycx_ncards, 1); - cycx_card_array = kmalloc(sizeof(struct cycx_device) * cycx_ncards, - GFP_KERNEL); + cycx_card_array = kcalloc(cycx_ncards, sizeof(struct cycx_device), GFP_KERNEL); if (!cycx_card_array) goto out; - memset(cycx_card_array, 0, sizeof(struct cycx_device) * cycx_ncards); /* Register adapters with WAN router */ for (cnt = 0; cnt < cycx_ncards; ++cnt) { diff --git a/drivers/net/wan/cycx_x25.c b/drivers/net/wan/cycx_x25.c index 016b3ff3ea5..a8af28b273d 100644 --- a/drivers/net/wan/cycx_x25.c +++ b/drivers/net/wan/cycx_x25.c @@ -376,11 +376,10 @@ static int cycx_wan_new_if(struct wan_device *wandev, struct net_device *dev, } /* allocate and initialize private data */ - chan = kmalloc(sizeof(struct cycx_x25_channel), GFP_KERNEL); + chan = kzalloc(sizeof(struct cycx_x25_channel), GFP_KERNEL); if (!chan) return -ENOMEM; - memset(chan, 0, sizeof(*chan)); strcpy(chan->name, conf->name); chan->card = card; chan->link = conf->port; diff --git a/drivers/net/wan/dscc4.c b/drivers/net/wan/dscc4.c index dca02447145..50d2f9108dc 100644 --- a/drivers/net/wan/dscc4.c +++ b/drivers/net/wan/dscc4.c @@ -890,12 +890,11 @@ static int dscc4_found1(struct pci_dev *pdev, void __iomem *ioaddr) struct dscc4_dev_priv *root; int i, ret = -ENOMEM; - root = kmalloc(dev_per_card*sizeof(*root), GFP_KERNEL); + root = kcalloc(dev_per_card, sizeof(*root), GFP_KERNEL); if (!root) { printk(KERN_ERR "%s: can't allocate data\n", DRV_NAME); goto err_out; } - memset(root, 0, dev_per_card*sizeof(*root)); for (i = 0; i < dev_per_card; i++) { root[i].dev = alloc_hdlcdev(root + i); @@ -903,12 +902,11 @@ static int dscc4_found1(struct pci_dev *pdev, void __iomem *ioaddr) goto err_free_dev; } - ppriv = kmalloc(sizeof(*ppriv), GFP_KERNEL); + ppriv = kzalloc(sizeof(*ppriv), GFP_KERNEL); if (!ppriv) { printk(KERN_ERR "%s: can't allocate private data\n", DRV_NAME); goto err_free_dev; } - memset(ppriv, 0, sizeof(struct dscc4_pci_priv)); ppriv->root = root; spin_lock_init(&ppriv->lock); diff --git a/drivers/net/wan/farsync.c b/drivers/net/wan/farsync.c index 58a53b6d9b4..12dae8e2484 100644 --- a/drivers/net/wan/farsync.c +++ b/drivers/net/wan/farsync.c @@ -2476,13 +2476,12 @@ fst_add_one(struct pci_dev *pdev, const struct pci_device_id *ent) } /* Allocate driver private data */ - card = kmalloc(sizeof (struct fst_card_info), GFP_KERNEL); + card = kzalloc(sizeof (struct fst_card_info), GFP_KERNEL); if (card == NULL) { printk_err("FarSync card found but insufficient memory for" " driver storage\n"); return -ENOMEM; } - memset(card, 0, sizeof (struct fst_card_info)); /* Try to enable the device */ if ((err = pci_enable_device(pdev)) != 0) { diff --git a/drivers/net/wan/hostess_sv11.c b/drivers/net/wan/hostess_sv11.c index 9ba3e4ee6ec..bf5f8d9b5c8 100644 --- a/drivers/net/wan/hostess_sv11.c +++ b/drivers/net/wan/hostess_sv11.c @@ -231,11 +231,10 @@ static struct sv11_device *sv11_init(int iobase, int irq) return NULL; } - sv = kmalloc(sizeof(struct sv11_device), GFP_KERNEL); + sv = kzalloc(sizeof(struct sv11_device), GFP_KERNEL); if(!sv) goto fail3; - memset(sv, 0, sizeof(*sv)); sv->if_ptr=&sv->netdev; sv->netdev.dev = alloc_netdev(0, "hdlc%d", sv11_setup); diff --git a/drivers/net/wan/n2.c b/drivers/net/wan/n2.c index 5c322dfb79f..cbdf0b748bd 100644 --- a/drivers/net/wan/n2.c +++ b/drivers/net/wan/n2.c @@ -351,12 +351,11 @@ static int __init n2_run(unsigned long io, unsigned long irq, return -ENODEV; } - card = kmalloc(sizeof(card_t), GFP_KERNEL); + card = kzalloc(sizeof(card_t), GFP_KERNEL); if (card == NULL) { printk(KERN_ERR "n2: unable to allocate memory\n"); return -ENOBUFS; } - memset(card, 0, sizeof(card_t)); card->ports[0].dev = alloc_hdlcdev(&card->ports[0]); card->ports[1].dev = alloc_hdlcdev(&card->ports[1]); diff --git a/drivers/net/wan/pc300_drv.c b/drivers/net/wan/pc300_drv.c index 5d8c78ee2cd..99fee2f1d01 100644 --- a/drivers/net/wan/pc300_drv.c +++ b/drivers/net/wan/pc300_drv.c @@ -3456,7 +3456,7 @@ cpc_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) if ((err = pci_enable_device(pdev)) < 0) return err; - card = kmalloc(sizeof(pc300_t), GFP_KERNEL); + card = kzalloc(sizeof(pc300_t), GFP_KERNEL); if (card == NULL) { printk("PC300 found at RAM 0x%016llx, " "but could not allocate card structure.\n", @@ -3464,7 +3464,6 @@ cpc_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) err = -ENOMEM; goto err_disable_dev; } - memset(card, 0, sizeof(pc300_t)); err = -ENODEV; diff --git a/drivers/net/wan/pc300too.c b/drivers/net/wan/pc300too.c index dfbd3b00f03..6353cb5c658 100644 --- a/drivers/net/wan/pc300too.c +++ b/drivers/net/wan/pc300too.c @@ -334,14 +334,13 @@ static int __devinit pc300_pci_init_one(struct pci_dev *pdev, return i; } - card = kmalloc(sizeof(card_t), GFP_KERNEL); + card = kzalloc(sizeof(card_t), GFP_KERNEL); if (card == NULL) { printk(KERN_ERR "pc300: unable to allocate memory\n"); pci_release_regions(pdev); pci_disable_device(pdev); return -ENOBUFS; } - memset(card, 0, sizeof(card_t)); pci_set_drvdata(pdev, card); if (pdev->device == PCI_DEVICE_ID_PC300_TE_1 || diff --git a/drivers/net/wan/pci200syn.c b/drivers/net/wan/pci200syn.c index 7f720de2e9f..092e51d8903 100644 --- a/drivers/net/wan/pci200syn.c +++ b/drivers/net/wan/pci200syn.c @@ -312,14 +312,13 @@ static int __devinit pci200_pci_init_one(struct pci_dev *pdev, return i; } - card = kmalloc(sizeof(card_t), GFP_KERNEL); + card = kzalloc(sizeof(card_t), GFP_KERNEL); if (card == NULL) { printk(KERN_ERR "pci200syn: unable to allocate memory\n"); pci_release_regions(pdev); pci_disable_device(pdev); return -ENOBUFS; } - memset(card, 0, sizeof(card_t)); pci_set_drvdata(pdev, card); card->ports[0].dev = alloc_hdlcdev(&card->ports[0]); card->ports[1].dev = alloc_hdlcdev(&card->ports[1]); diff --git a/drivers/net/wan/sdla.c b/drivers/net/wan/sdla.c index 6a485f0556f..792e588d7d6 100644 --- a/drivers/net/wan/sdla.c +++ b/drivers/net/wan/sdla.c @@ -1196,10 +1196,9 @@ static int sdla_xfer(struct net_device *dev, struct sdla_mem __user *info, int r if (read) { - temp = kmalloc(mem.len, GFP_KERNEL); + temp = kzalloc(mem.len, GFP_KERNEL); if (!temp) return(-ENOMEM); - memset(temp, 0, mem.len); sdla_read(dev, mem.addr, temp, mem.len); if(copy_to_user(mem.data, temp, mem.len)) { diff --git a/drivers/net/wan/sealevel.c b/drivers/net/wan/sealevel.c index 131358108c5..11276bf3149 100644 --- a/drivers/net/wan/sealevel.c +++ b/drivers/net/wan/sealevel.c @@ -270,11 +270,10 @@ static __init struct slvl_board *slvl_init(int iobase, int irq, return NULL; } - b = kmalloc(sizeof(struct slvl_board), GFP_KERNEL); + b = kzalloc(sizeof(struct slvl_board), GFP_KERNEL); if(!b) goto fail3; - memset(b, 0, sizeof(*b)); if (!(b->dev[0]= slvl_alloc(iobase, irq))) goto fail2; diff --git a/drivers/net/wan/wanxl.c b/drivers/net/wan/wanxl.c index c7360157433..3c78f985638 100644 --- a/drivers/net/wan/wanxl.c +++ b/drivers/net/wan/wanxl.c @@ -599,7 +599,7 @@ static int __devinit wanxl_pci_init_one(struct pci_dev *pdev, } alloc_size = sizeof(card_t) + ports * sizeof(port_t); - card = kmalloc(alloc_size, GFP_KERNEL); + card = kzalloc(alloc_size, GFP_KERNEL); if (card == NULL) { printk(KERN_ERR "wanXL %s: unable to allocate memory\n", pci_name(pdev)); @@ -607,7 +607,6 @@ static int __devinit wanxl_pci_init_one(struct pci_dev *pdev, pci_disable_device(pdev); return -ENOBUFS; } - memset(card, 0, alloc_size); pci_set_drvdata(pdev, card); card->pdev = pdev; diff --git a/drivers/net/wan/x25_asy.c b/drivers/net/wan/x25_asy.c index 1c9edd97acc..c48b1cc63fd 100644 --- a/drivers/net/wan/x25_asy.c +++ b/drivers/net/wan/x25_asy.c @@ -786,14 +786,12 @@ static int __init init_x25_asy(void) printk(KERN_INFO "X.25 async: version 0.00 ALPHA " "(dynamic channels, max=%d).\n", x25_asy_maxdev ); - x25_asy_devs = kmalloc(sizeof(struct net_device *)*x25_asy_maxdev, - GFP_KERNEL); + x25_asy_devs = kcalloc(x25_asy_maxdev, sizeof(struct net_device*), GFP_KERNEL); if (!x25_asy_devs) { printk(KERN_WARNING "X25 async: Can't allocate x25_asy_ctrls[] " "array! Uaargh! (-> No X.25 available)\n"); return -ENOMEM; } - memset(x25_asy_devs, 0, sizeof(struct net_device *)*x25_asy_maxdev); return tty_register_ldisc(N_X25, &x25_ldisc); } diff --git a/drivers/net/wireless/ipw2100.c b/drivers/net/wireless/ipw2100.c index 072ede71e57..8990585bd22 100644 --- a/drivers/net/wireless/ipw2100.c +++ b/drivers/net/wireless/ipw2100.c @@ -7868,10 +7868,10 @@ static int ipw2100_wx_set_powermode(struct net_device *dev, goto done; } - if ((mode < 1) || (mode > POWER_MODES)) + if ((mode < 0) || (mode > POWER_MODES)) mode = IPW_POWER_AUTO; - if (priv->power_mode != mode) + if (IPW_POWER_LEVEL(priv->power_mode) != mode) err = ipw2100_set_power_mode(priv, mode); done: mutex_unlock(&priv->action_mutex); @@ -7902,7 +7902,7 @@ static int ipw2100_wx_get_powermode(struct net_device *dev, break; case IPW_POWER_AUTO: snprintf(extra, MAX_POWER_STRING, - "Power save level: %d (Auto)", 0); + "Power save level: %d (Auto)", level); break; default: timeout = timeout_duration[level - 1] / 1000; diff --git a/drivers/net/wireless/ipw2200.c b/drivers/net/wireless/ipw2200.c index aa32a97380e..61497c46746 100644 --- a/drivers/net/wireless/ipw2200.c +++ b/drivers/net/wireless/ipw2200.c @@ -70,7 +70,7 @@ #define VQ #endif -#define IPW2200_VERSION "1.2.0" VK VD VM VP VR VQ +#define IPW2200_VERSION "1.2.2" VK VD VM VP VR VQ #define DRV_DESCRIPTION "Intel(R) PRO/Wireless 2200/2915 Network Driver" #define DRV_COPYRIGHT "Copyright(c) 2003-2006 Intel Corporation" #define DRV_VERSION IPW2200_VERSION @@ -2506,7 +2506,7 @@ static int ipw_send_power_mode(struct ipw_priv *priv, u32 mode) break; } - param = cpu_to_le32(mode); + param = cpu_to_le32(param); return ipw_send_cmd_pdu(priv, IPW_CMD_POWER_MODE, sizeof(param), ¶m); } @@ -9568,6 +9568,7 @@ static int ipw_wx_set_power(struct net_device *dev, priv->power_mode = IPW_POWER_ENABLED | IPW_POWER_BATTERY; else priv->power_mode = IPW_POWER_ENABLED | priv->power_mode; + err = ipw_send_power_mode(priv, IPW_POWER_LEVEL(priv->power_mode)); if (err) { IPW_DEBUG_WX("failed setting power mode.\n"); @@ -9604,22 +9605,19 @@ static int ipw_wx_set_powermode(struct net_device *dev, struct ipw_priv *priv = ieee80211_priv(dev); int mode = *(int *)extra; int err; + mutex_lock(&priv->mutex); - if ((mode < 1) || (mode > IPW_POWER_LIMIT)) { + if ((mode < 1) || (mode > IPW_POWER_LIMIT)) mode = IPW_POWER_AC; - priv->power_mode = mode; - } else { - priv->power_mode = IPW_POWER_ENABLED | mode; - } - if (priv->power_mode != mode) { + if (IPW_POWER_LEVEL(priv->power_mode) != mode) { err = ipw_send_power_mode(priv, mode); - if (err) { IPW_DEBUG_WX("failed setting power mode.\n"); mutex_unlock(&priv->mutex); return err; } + priv->power_mode = IPW_POWER_ENABLED | mode; } mutex_unlock(&priv->mutex); return 0; @@ -10555,7 +10553,7 @@ static irqreturn_t ipw_isr(int irq, void *data) spin_lock(&priv->irq_lock); if (!(priv->status & STATUS_INT_ENABLED)) { - /* Shared IRQ */ + /* IRQ is disabled */ goto none; } diff --git a/drivers/net/wireless/zd1211rw/zd_usb.c b/drivers/net/wireless/zd1211rw/zd_usb.c index 28d41a29d7b..a9c339ef116 100644 --- a/drivers/net/wireless/zd1211rw/zd_usb.c +++ b/drivers/net/wireless/zd1211rw/zd_usb.c @@ -72,6 +72,8 @@ static struct usb_device_id usb_ids[] = { { USB_DEVICE(0x0586, 0x3413), .driver_info = DEVICE_ZD1211B }, { USB_DEVICE(0x0053, 0x5301), .driver_info = DEVICE_ZD1211B }, { USB_DEVICE(0x0411, 0x00da), .driver_info = DEVICE_ZD1211B }, + { USB_DEVICE(0x2019, 0x5303), .driver_info = DEVICE_ZD1211B }, + { USB_DEVICE(0x129b, 0x1667), .driver_info = DEVICE_ZD1211B }, /* "Driverless" devices that need ejecting */ { USB_DEVICE(0x0ace, 0x2011), .driver_info = DEVICE_INSTALLER }, { USB_DEVICE(0x0ace, 0x20ff), .driver_info = DEVICE_INSTALLER }, diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c new file mode 100644 index 00000000000..489f69c5d6c --- /dev/null +++ b/drivers/net/xen-netfront.c @@ -0,0 +1,1863 @@ +/* + * Virtual network driver for conversing with remote driver backends. + * + * Copyright (c) 2002-2005, K A Fraser + * Copyright (c) 2005, XenSource Ltd + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License version 2 + * as published by the Free Software Foundation; or, when distributed + * separately from the Linux kernel or incorporated into other + * software packages, subject to the following license: + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this source file (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, copy, modify, + * merge, publish, distribute, sublicense, and/or sell copies of the Software, + * and to permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + */ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> +#include <linux/ethtool.h> +#include <linux/if_ether.h> +#include <linux/tcp.h> +#include <linux/udp.h> +#include <linux/moduleparam.h> +#include <linux/mm.h> +#include <net/ip.h> + +#include <xen/xenbus.h> +#include <xen/events.h> +#include <xen/page.h> +#include <xen/grant_table.h> + +#include <xen/interface/io/netif.h> +#include <xen/interface/memory.h> +#include <xen/interface/grant_table.h> + +static struct ethtool_ops xennet_ethtool_ops; + +struct netfront_cb { + struct page *page; + unsigned offset; +}; + +#define NETFRONT_SKB_CB(skb) ((struct netfront_cb *)((skb)->cb)) + +#define RX_COPY_THRESHOLD 256 + +#define GRANT_INVALID_REF 0 + +#define NET_TX_RING_SIZE __RING_SIZE((struct xen_netif_tx_sring *)0, PAGE_SIZE) +#define NET_RX_RING_SIZE __RING_SIZE((struct xen_netif_rx_sring *)0, PAGE_SIZE) +#define TX_MAX_TARGET min_t(int, NET_RX_RING_SIZE, 256) + +struct netfront_info { + struct list_head list; + struct net_device *netdev; + + struct net_device_stats stats; + + struct xen_netif_tx_front_ring tx; + struct xen_netif_rx_front_ring rx; + + spinlock_t tx_lock; + spinlock_t rx_lock; + + unsigned int evtchn; + + /* Receive-ring batched refills. */ +#define RX_MIN_TARGET 8 +#define RX_DFL_MIN_TARGET 64 +#define RX_MAX_TARGET min_t(int, NET_RX_RING_SIZE, 256) + unsigned rx_min_target, rx_max_target, rx_target; + struct sk_buff_head rx_batch; + + struct timer_list rx_refill_timer; + + /* + * {tx,rx}_skbs store outstanding skbuffs. Free tx_skb entries + * are linked from tx_skb_freelist through skb_entry.link. + * + * NB. Freelist index entries are always going to be less than + * PAGE_OFFSET, whereas pointers to skbs will always be equal or + * greater than PAGE_OFFSET: we use this property to distinguish + * them. + */ + union skb_entry { + struct sk_buff *skb; + unsigned link; + } tx_skbs[NET_TX_RING_SIZE]; + grant_ref_t gref_tx_head; + grant_ref_t grant_tx_ref[NET_TX_RING_SIZE]; + unsigned tx_skb_freelist; + + struct sk_buff *rx_skbs[NET_RX_RING_SIZE]; + grant_ref_t gref_rx_head; + grant_ref_t grant_rx_ref[NET_RX_RING_SIZE]; + + struct xenbus_device *xbdev; + int tx_ring_ref; + int rx_ring_ref; + + unsigned long rx_pfn_array[NET_RX_RING_SIZE]; + struct multicall_entry rx_mcl[NET_RX_RING_SIZE+1]; + struct mmu_update rx_mmu[NET_RX_RING_SIZE]; +}; + +struct netfront_rx_info { + struct xen_netif_rx_response rx; + struct xen_netif_extra_info extras[XEN_NETIF_EXTRA_TYPE_MAX - 1]; +}; + +/* + * Access macros for acquiring freeing slots in tx_skbs[]. + */ + +static void add_id_to_freelist(unsigned *head, union skb_entry *list, + unsigned short id) +{ + list[id].link = *head; + *head = id; +} + +static unsigned short get_id_from_freelist(unsigned *head, + union skb_entry *list) +{ + unsigned int id = *head; + *head = list[id].link; + return id; +} + +static int xennet_rxidx(RING_IDX idx) +{ + return idx & (NET_RX_RING_SIZE - 1); +} + +static struct sk_buff *xennet_get_rx_skb(struct netfront_info *np, + RING_IDX ri) +{ + int i = xennet_rxidx(ri); + struct sk_buff *skb = np->rx_skbs[i]; + np->rx_skbs[i] = NULL; + return skb; +} + +static grant_ref_t xennet_get_rx_ref(struct netfront_info *np, + RING_IDX ri) +{ + int i = xennet_rxidx(ri); + grant_ref_t ref = np->grant_rx_ref[i]; + np->grant_rx_ref[i] = GRANT_INVALID_REF; + return ref; +} + +#ifdef CONFIG_SYSFS +static int xennet_sysfs_addif(struct net_device *netdev); +static void xennet_sysfs_delif(struct net_device *netdev); +#else /* !CONFIG_SYSFS */ +#define xennet_sysfs_addif(dev) (0) +#define xennet_sysfs_delif(dev) do { } while (0) +#endif + +static int xennet_can_sg(struct net_device *dev) +{ + return dev->features & NETIF_F_SG; +} + + +static void rx_refill_timeout(unsigned long data) +{ + struct net_device *dev = (struct net_device *)data; + netif_rx_schedule(dev); +} + +static int netfront_tx_slot_available(struct netfront_info *np) +{ + return ((np->tx.req_prod_pvt - np->tx.rsp_cons) < + (TX_MAX_TARGET - MAX_SKB_FRAGS - 2)); +} + +static void xennet_maybe_wake_tx(struct net_device *dev) +{ + struct netfront_info *np = netdev_priv(dev); + + if (unlikely(netif_queue_stopped(dev)) && + netfront_tx_slot_available(np) && + likely(netif_running(dev))) + netif_wake_queue(dev); +} + +static void xennet_alloc_rx_buffers(struct net_device *dev) +{ + unsigned short id; + struct netfront_info *np = netdev_priv(dev); + struct sk_buff *skb; + struct page *page; + int i, batch_target, notify; + RING_IDX req_prod = np->rx.req_prod_pvt; + struct xen_memory_reservation reservation; + grant_ref_t ref; + unsigned long pfn; + void *vaddr; + int nr_flips; + struct xen_netif_rx_request *req; + + if (unlikely(!netif_carrier_ok(dev))) + return; + + /* + * Allocate skbuffs greedily, even though we batch updates to the + * receive ring. This creates a less bursty demand on the memory + * allocator, so should reduce the chance of failed allocation requests + * both for ourself and for other kernel subsystems. + */ + batch_target = np->rx_target - (req_prod - np->rx.rsp_cons); + for (i = skb_queue_len(&np->rx_batch); i < batch_target; i++) { + skb = __netdev_alloc_skb(dev, RX_COPY_THRESHOLD, + GFP_ATOMIC | __GFP_NOWARN); + if (unlikely(!skb)) + goto no_skb; + + page = alloc_page(GFP_ATOMIC | __GFP_NOWARN); + if (!page) { + kfree_skb(skb); +no_skb: + /* Any skbuffs queued for refill? Force them out. */ + if (i != 0) + goto refill; + /* Could not allocate any skbuffs. Try again later. */ + mod_timer(&np->rx_refill_timer, + jiffies + (HZ/10)); + break; + } + + skb_shinfo(skb)->frags[0].page = page; + skb_shinfo(skb)->nr_frags = 1; + __skb_queue_tail(&np->rx_batch, skb); + } + + /* Is the batch large enough to be worthwhile? */ + if (i < (np->rx_target/2)) { + if (req_prod > np->rx.sring->req_prod) + goto push; + return; + } + + /* Adjust our fill target if we risked running out of buffers. */ + if (((req_prod - np->rx.sring->rsp_prod) < (np->rx_target / 4)) && + ((np->rx_target *= 2) > np->rx_max_target)) + np->rx_target = np->rx_max_target; + + refill: + for (nr_flips = i = 0; ; i++) { + skb = __skb_dequeue(&np->rx_batch); + if (skb == NULL) + break; + + skb->dev = dev; + + id = xennet_rxidx(req_prod + i); + + BUG_ON(np->rx_skbs[id]); + np->rx_skbs[id] = skb; + + ref = gnttab_claim_grant_reference(&np->gref_rx_head); + BUG_ON((signed short)ref < 0); + np->grant_rx_ref[id] = ref; + + pfn = page_to_pfn(skb_shinfo(skb)->frags[0].page); + vaddr = page_address(skb_shinfo(skb)->frags[0].page); + + req = RING_GET_REQUEST(&np->rx, req_prod + i); + gnttab_grant_foreign_access_ref(ref, + np->xbdev->otherend_id, + pfn_to_mfn(pfn), + 0); + + req->id = id; + req->gref = ref; + } + + if (nr_flips != 0) { + reservation.extent_start = np->rx_pfn_array; + reservation.nr_extents = nr_flips; + reservation.extent_order = 0; + reservation.address_bits = 0; + reservation.domid = DOMID_SELF; + + if (!xen_feature(XENFEAT_auto_translated_physmap)) { + /* After all PTEs have been zapped, flush the TLB. */ + np->rx_mcl[i-1].args[MULTI_UVMFLAGS_INDEX] = + UVMF_TLB_FLUSH|UVMF_ALL; + + /* Give away a batch of pages. */ + np->rx_mcl[i].op = __HYPERVISOR_memory_op; + np->rx_mcl[i].args[0] = XENMEM_decrease_reservation; + np->rx_mcl[i].args[1] = (unsigned long)&reservation; + + /* Zap PTEs and give away pages in one big + * multicall. */ + (void)HYPERVISOR_multicall(np->rx_mcl, i+1); + + /* Check return status of HYPERVISOR_memory_op(). */ + if (unlikely(np->rx_mcl[i].result != i)) + panic("Unable to reduce memory reservation\n"); + } else { + if (HYPERVISOR_memory_op(XENMEM_decrease_reservation, + &reservation) != i) + panic("Unable to reduce memory reservation\n"); + } + } else { + wmb(); /* barrier so backend seens requests */ + } + + /* Above is a suitable barrier to ensure backend will see requests. */ + np->rx.req_prod_pvt = req_prod + i; + push: + RING_PUSH_REQUESTS_AND_CHECK_NOTIFY(&np->rx, notify); + if (notify) + notify_remote_via_irq(np->netdev->irq); +} + +static int xennet_open(struct net_device *dev) +{ + struct netfront_info *np = netdev_priv(dev); + + memset(&np->stats, 0, sizeof(np->stats)); + + spin_lock_bh(&np->rx_lock); + if (netif_carrier_ok(dev)) { + xennet_alloc_rx_buffers(dev); + np->rx.sring->rsp_event = np->rx.rsp_cons + 1; + if (RING_HAS_UNCONSUMED_RESPONSES(&np->rx)) + netif_rx_schedule(dev); + } + spin_unlock_bh(&np->rx_lock); + + xennet_maybe_wake_tx(dev); + + return 0; +} + +static void xennet_tx_buf_gc(struct net_device *dev) +{ + RING_IDX cons, prod; + unsigned short id; + struct netfront_info *np = netdev_priv(dev); + struct sk_buff *skb; + + BUG_ON(!netif_carrier_ok(dev)); + + do { + prod = np->tx.sring->rsp_prod; + rmb(); /* Ensure we see responses up to 'rp'. */ + + for (cons = np->tx.rsp_cons; cons != prod; cons++) { + struct xen_netif_tx_response *txrsp; + + txrsp = RING_GET_RESPONSE(&np->tx, cons); + if (txrsp->status == NETIF_RSP_NULL) + continue; + + id = txrsp->id; + skb = np->tx_skbs[id].skb; + if (unlikely(gnttab_query_foreign_access( + np->grant_tx_ref[id]) != 0)) { + printk(KERN_ALERT "xennet_tx_buf_gc: warning " + "-- grant still in use by backend " + "domain.\n"); + BUG(); + } + gnttab_end_foreign_access_ref( + np->grant_tx_ref[id], GNTMAP_readonly); + gnttab_release_grant_reference( + &np->gref_tx_head, np->grant_tx_ref[id]); + np->grant_tx_ref[id] = GRANT_INVALID_REF; + add_id_to_freelist(&np->tx_skb_freelist, np->tx_skbs, id); + dev_kfree_skb_irq(skb); + } + + np->tx.rsp_cons = prod; + + /* + * Set a new event, then check for race with update of tx_cons. + * Note that it is essential to schedule a callback, no matter + * how few buffers are pending. Even if there is space in the + * transmit ring, higher layers may be blocked because too much + * data is outstanding: in such cases notification from Xen is + * likely to be the only kick that we'll get. + */ + np->tx.sring->rsp_event = + prod + ((np->tx.sring->req_prod - prod) >> 1) + 1; + mb(); /* update shared area */ + } while ((cons == prod) && (prod != np->tx.sring->rsp_prod)); + + xennet_maybe_wake_tx(dev); +} + +static void xennet_make_frags(struct sk_buff *skb, struct net_device *dev, + struct xen_netif_tx_request *tx) +{ + struct netfront_info *np = netdev_priv(dev); + char *data = skb->data; + unsigned long mfn; + RING_IDX prod = np->tx.req_prod_pvt; + int frags = skb_shinfo(skb)->nr_frags; + unsigned int offset = offset_in_page(data); + unsigned int len = skb_headlen(skb); + unsigned int id; + grant_ref_t ref; + int i; + + /* While the header overlaps a page boundary (including being + larger than a page), split it it into page-sized chunks. */ + while (len > PAGE_SIZE - offset) { + tx->size = PAGE_SIZE - offset; + tx->flags |= NETTXF_more_data; + len -= tx->size; + data += tx->size; + offset = 0; + + id = get_id_from_freelist(&np->tx_skb_freelist, np->tx_skbs); + np->tx_skbs[id].skb = skb_get(skb); + tx = RING_GET_REQUEST(&np->tx, prod++); + tx->id = id; + ref = gnttab_claim_grant_reference(&np->gref_tx_head); + BUG_ON((signed short)ref < 0); + + mfn = virt_to_mfn(data); + gnttab_grant_foreign_access_ref(ref, np->xbdev->otherend_id, + mfn, GNTMAP_readonly); + + tx->gref = np->grant_tx_ref[id] = ref; + tx->offset = offset; + tx->size = len; + tx->flags = 0; + } + + /* Grant backend access to each skb fragment page. */ + for (i = 0; i < frags; i++) { + skb_frag_t *frag = skb_shinfo(skb)->frags + i; + + tx->flags |= NETTXF_more_data; + + id = get_id_from_freelist(&np->tx_skb_freelist, np->tx_skbs); + np->tx_skbs[id].skb = skb_get(skb); + tx = RING_GET_REQUEST(&np->tx, prod++); + tx->id = id; + ref = gnttab_claim_grant_reference(&np->gref_tx_head); + BUG_ON((signed short)ref < 0); + + mfn = pfn_to_mfn(page_to_pfn(frag->page)); + gnttab_grant_foreign_access_ref(ref, np->xbdev->otherend_id, + mfn, GNTMAP_readonly); + + tx->gref = np->grant_tx_ref[id] = ref; + tx->offset = frag->page_offset; + tx->size = frag->size; + tx->flags = 0; + } + + np->tx.req_prod_pvt = prod; +} + +static int xennet_start_xmit(struct sk_buff *skb, struct net_device *dev) +{ + unsigned short id; + struct netfront_info *np = netdev_priv(dev); + struct xen_netif_tx_request *tx; + struct xen_netif_extra_info *extra; + char *data = skb->data; + RING_IDX i; + grant_ref_t ref; + unsigned long mfn; + int notify; + int frags = skb_shinfo(skb)->nr_frags; + unsigned int offset = offset_in_page(data); + unsigned int len = skb_headlen(skb); + + frags += (offset + len + PAGE_SIZE - 1) / PAGE_SIZE; + if (unlikely(frags > MAX_SKB_FRAGS + 1)) { + printk(KERN_ALERT "xennet: skb rides the rocket: %d frags\n", + frags); + dump_stack(); + goto drop; + } + + spin_lock_irq(&np->tx_lock); + + if (unlikely(!netif_carrier_ok(dev) || + (frags > 1 && !xennet_can_sg(dev)) || + netif_needs_gso(dev, skb))) { + spin_unlock_irq(&np->tx_lock); + goto drop; + } + + i = np->tx.req_prod_pvt; + + id = get_id_from_freelist(&np->tx_skb_freelist, np->tx_skbs); + np->tx_skbs[id].skb = skb; + + tx = RING_GET_REQUEST(&np->tx, i); + + tx->id = id; + ref = gnttab_claim_grant_reference(&np->gref_tx_head); + BUG_ON((signed short)ref < 0); + mfn = virt_to_mfn(data); + gnttab_grant_foreign_access_ref( + ref, np->xbdev->otherend_id, mfn, GNTMAP_readonly); + tx->gref = np->grant_tx_ref[id] = ref; + tx->offset = offset; + tx->size = len; + extra = NULL; + + tx->flags = 0; + if (skb->ip_summed == CHECKSUM_PARTIAL) + /* local packet? */ + tx->flags |= NETTXF_csum_blank | NETTXF_data_validated; + else if (skb->ip_summed == CHECKSUM_UNNECESSARY) + /* remote but checksummed. */ + tx->flags |= NETTXF_data_validated; + + if (skb_shinfo(skb)->gso_size) { + struct xen_netif_extra_info *gso; + + gso = (struct xen_netif_extra_info *) + RING_GET_REQUEST(&np->tx, ++i); + + if (extra) + extra->flags |= XEN_NETIF_EXTRA_FLAG_MORE; + else + tx->flags |= NETTXF_extra_info; + + gso->u.gso.size = skb_shinfo(skb)->gso_size; + gso->u.gso.type = XEN_NETIF_GSO_TYPE_TCPV4; + gso->u.gso.pad = 0; + gso->u.gso.features = 0; + + gso->type = XEN_NETIF_EXTRA_TYPE_GSO; + gso->flags = 0; + extra = gso; + } + + np->tx.req_prod_pvt = i + 1; + + xennet_make_frags(skb, dev, tx); + tx->size = skb->len; + + RING_PUSH_REQUESTS_AND_CHECK_NOTIFY(&np->tx, notify); + if (notify) + notify_remote_via_irq(np->netdev->irq); + + xennet_tx_buf_gc(dev); + + if (!netfront_tx_slot_available(np)) + netif_stop_queue(dev); + + spin_unlock_irq(&np->tx_lock); + + np->stats.tx_bytes += skb->len; + np->stats.tx_packets++; + + return 0; + + drop: + np->stats.tx_dropped++; + dev_kfree_skb(skb); + return 0; +} + +static int xennet_close(struct net_device *dev) +{ + struct netfront_info *np = netdev_priv(dev); + netif_stop_queue(np->netdev); + return 0; +} + +static struct net_device_stats *xennet_get_stats(struct net_device *dev) +{ + struct netfront_info *np = netdev_priv(dev); + return &np->stats; +} + +static void xennet_move_rx_slot(struct netfront_info *np, struct sk_buff *skb, + grant_ref_t ref) +{ + int new = xennet_rxidx(np->rx.req_prod_pvt); + + BUG_ON(np->rx_skbs[new]); + np->rx_skbs[new] = skb; + np->grant_rx_ref[new] = ref; + RING_GET_REQUEST(&np->rx, np->rx.req_prod_pvt)->id = new; + RING_GET_REQUEST(&np->rx, np->rx.req_prod_pvt)->gref = ref; + np->rx.req_prod_pvt++; +} + +static int xennet_get_extras(struct netfront_info *np, + struct xen_netif_extra_info *extras, + RING_IDX rp) + +{ + struct xen_netif_extra_info *extra; + struct device *dev = &np->netdev->dev; + RING_IDX cons = np->rx.rsp_cons; + int err = 0; + + do { + struct sk_buff *skb; + grant_ref_t ref; + + if (unlikely(cons + 1 == rp)) { + if (net_ratelimit()) + dev_warn(dev, "Missing extra info\n"); + err = -EBADR; + break; + } + + extra = (struct xen_netif_extra_info *) + RING_GET_RESPONSE(&np->rx, ++cons); + + if (unlikely(!extra->type || + extra->type >= XEN_NETIF_EXTRA_TYPE_MAX)) { + if (net_ratelimit()) + dev_warn(dev, "Invalid extra type: %d\n", + extra->type); + err = -EINVAL; + } else { + memcpy(&extras[extra->type - 1], extra, + sizeof(*extra)); + } + + skb = xennet_get_rx_skb(np, cons); + ref = xennet_get_rx_ref(np, cons); + xennet_move_rx_slot(np, skb, ref); + } while (extra->flags & XEN_NETIF_EXTRA_FLAG_MORE); + + np->rx.rsp_cons = cons; + return err; +} + +static int xennet_get_responses(struct netfront_info *np, + struct netfront_rx_info *rinfo, RING_IDX rp, + struct sk_buff_head *list) +{ + struct xen_netif_rx_response *rx = &rinfo->rx; + struct xen_netif_extra_info *extras = rinfo->extras; + struct device *dev = &np->netdev->dev; + RING_IDX cons = np->rx.rsp_cons; + struct sk_buff *skb = xennet_get_rx_skb(np, cons); + grant_ref_t ref = xennet_get_rx_ref(np, cons); + int max = MAX_SKB_FRAGS + (rx->status <= RX_COPY_THRESHOLD); + int frags = 1; + int err = 0; + unsigned long ret; + + if (rx->flags & NETRXF_extra_info) { + err = xennet_get_extras(np, extras, rp); + cons = np->rx.rsp_cons; + } + + for (;;) { + if (unlikely(rx->status < 0 || + rx->offset + rx->status > PAGE_SIZE)) { + if (net_ratelimit()) + dev_warn(dev, "rx->offset: %x, size: %u\n", + rx->offset, rx->status); + xennet_move_rx_slot(np, skb, ref); + err = -EINVAL; + goto next; + } + + /* + * This definitely indicates a bug, either in this driver or in + * the backend driver. In future this should flag the bad + * situation to the system controller to reboot the backed. + */ + if (ref == GRANT_INVALID_REF) { + if (net_ratelimit()) + dev_warn(dev, "Bad rx response id %d.\n", + rx->id); + err = -EINVAL; + goto next; + } + + ret = gnttab_end_foreign_access_ref(ref, 0); + BUG_ON(!ret); + + gnttab_release_grant_reference(&np->gref_rx_head, ref); + + __skb_queue_tail(list, skb); + +next: + if (!(rx->flags & NETRXF_more_data)) + break; + + if (cons + frags == rp) { + if (net_ratelimit()) + dev_warn(dev, "Need more frags\n"); + err = -ENOENT; + break; + } + + rx = RING_GET_RESPONSE(&np->rx, cons + frags); + skb = xennet_get_rx_skb(np, cons + frags); + ref = xennet_get_rx_ref(np, cons + frags); + frags++; + } + + if (unlikely(frags > max)) { + if (net_ratelimit()) + dev_warn(dev, "Too many frags\n"); + err = -E2BIG; + } + + if (unlikely(err)) + np->rx.rsp_cons = cons + frags; + + return err; +} + +static int xennet_set_skb_gso(struct sk_buff *skb, + struct xen_netif_extra_info *gso) +{ + if (!gso->u.gso.size) { + if (net_ratelimit()) + printk(KERN_WARNING "GSO size must not be zero.\n"); + return -EINVAL; + } + + /* Currently only TCPv4 S.O. is supported. */ + if (gso->u.gso.type != XEN_NETIF_GSO_TYPE_TCPV4) { + if (net_ratelimit()) + printk(KERN_WARNING "Bad GSO type %d.\n", gso->u.gso.type); + return -EINVAL; + } + + skb_shinfo(skb)->gso_size = gso->u.gso.size; + skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4; + + /* Header must be checked, and gso_segs computed. */ + skb_shinfo(skb)->gso_type |= SKB_GSO_DODGY; + skb_shinfo(skb)->gso_segs = 0; + + return 0; +} + +static RING_IDX xennet_fill_frags(struct netfront_info *np, + struct sk_buff *skb, + struct sk_buff_head *list) +{ + struct skb_shared_info *shinfo = skb_shinfo(skb); + int nr_frags = shinfo->nr_frags; + RING_IDX cons = np->rx.rsp_cons; + skb_frag_t *frag = shinfo->frags + nr_frags; + struct sk_buff *nskb; + + while ((nskb = __skb_dequeue(list))) { + struct xen_netif_rx_response *rx = + RING_GET_RESPONSE(&np->rx, ++cons); + + frag->page = skb_shinfo(nskb)->frags[0].page; + frag->page_offset = rx->offset; + frag->size = rx->status; + + skb->data_len += rx->status; + + skb_shinfo(nskb)->nr_frags = 0; + kfree_skb(nskb); + + frag++; + nr_frags++; + } + + shinfo->nr_frags = nr_frags; + return cons; +} + +static int skb_checksum_setup(struct sk_buff *skb) +{ + struct iphdr *iph; + unsigned char *th; + int err = -EPROTO; + + if (skb->protocol != htons(ETH_P_IP)) + goto out; + + iph = (void *)skb->data; + th = skb->data + 4 * iph->ihl; + if (th >= skb_tail_pointer(skb)) + goto out; + + skb->csum_start = th - skb->head; + switch (iph->protocol) { + case IPPROTO_TCP: + skb->csum_offset = offsetof(struct tcphdr, check); + break; + case IPPROTO_UDP: + skb->csum_offset = offsetof(struct udphdr, check); + break; + default: + if (net_ratelimit()) + printk(KERN_ERR "Attempting to checksum a non-" + "TCP/UDP packet, dropping a protocol" + " %d packet", iph->protocol); + goto out; + } + + if ((th + skb->csum_offset + 2) > skb_tail_pointer(skb)) + goto out; + + err = 0; + +out: + return err; +} + +static int handle_incoming_queue(struct net_device *dev, + struct sk_buff_head *rxq) +{ + struct netfront_info *np = netdev_priv(dev); + int packets_dropped = 0; + struct sk_buff *skb; + + while ((skb = __skb_dequeue(rxq)) != NULL) { + struct page *page = NETFRONT_SKB_CB(skb)->page; + void *vaddr = page_address(page); + unsigned offset = NETFRONT_SKB_CB(skb)->offset; + + memcpy(skb->data, vaddr + offset, + skb_headlen(skb)); + + if (page != skb_shinfo(skb)->frags[0].page) + __free_page(page); + + /* Ethernet work: Delayed to here as it peeks the header. */ + skb->protocol = eth_type_trans(skb, dev); + + if (skb->ip_summed == CHECKSUM_PARTIAL) { + if (skb_checksum_setup(skb)) { + kfree_skb(skb); + packets_dropped++; + np->stats.rx_errors++; + continue; + } + } + + np->stats.rx_packets++; + np->stats.rx_bytes += skb->len; + + /* Pass it up. */ + netif_receive_skb(skb); + dev->last_rx = jiffies; + } + + return packets_dropped; +} + +static int xennet_poll(struct net_device *dev, int *pbudget) +{ + struct netfront_info *np = netdev_priv(dev); + struct sk_buff *skb; + struct netfront_rx_info rinfo; + struct xen_netif_rx_response *rx = &rinfo.rx; + struct xen_netif_extra_info *extras = rinfo.extras; + RING_IDX i, rp; + int work_done, budget, more_to_do = 1; + struct sk_buff_head rxq; + struct sk_buff_head errq; + struct sk_buff_head tmpq; + unsigned long flags; + unsigned int len; + int err; + + spin_lock(&np->rx_lock); + + if (unlikely(!netif_carrier_ok(dev))) { + spin_unlock(&np->rx_lock); + return 0; + } + + skb_queue_head_init(&rxq); + skb_queue_head_init(&errq); + skb_queue_head_init(&tmpq); + + budget = *pbudget; + if (budget > dev->quota) + budget = dev->quota; + rp = np->rx.sring->rsp_prod; + rmb(); /* Ensure we see queued responses up to 'rp'. */ + + i = np->rx.rsp_cons; + work_done = 0; + while ((i != rp) && (work_done < budget)) { + memcpy(rx, RING_GET_RESPONSE(&np->rx, i), sizeof(*rx)); + memset(extras, 0, sizeof(rinfo.extras)); + + err = xennet_get_responses(np, &rinfo, rp, &tmpq); + + if (unlikely(err)) { +err: + while ((skb = __skb_dequeue(&tmpq))) + __skb_queue_tail(&errq, skb); + np->stats.rx_errors++; + i = np->rx.rsp_cons; + continue; + } + + skb = __skb_dequeue(&tmpq); + + if (extras[XEN_NETIF_EXTRA_TYPE_GSO - 1].type) { + struct xen_netif_extra_info *gso; + gso = &extras[XEN_NETIF_EXTRA_TYPE_GSO - 1]; + + if (unlikely(xennet_set_skb_gso(skb, gso))) { + __skb_queue_head(&tmpq, skb); + np->rx.rsp_cons += skb_queue_len(&tmpq); + goto err; + } + } + + NETFRONT_SKB_CB(skb)->page = skb_shinfo(skb)->frags[0].page; + NETFRONT_SKB_CB(skb)->offset = rx->offset; + + len = rx->status; + if (len > RX_COPY_THRESHOLD) + len = RX_COPY_THRESHOLD; + skb_put(skb, len); + + if (rx->status > len) { + skb_shinfo(skb)->frags[0].page_offset = + rx->offset + len; + skb_shinfo(skb)->frags[0].size = rx->status - len; + skb->data_len = rx->status - len; + } else { + skb_shinfo(skb)->frags[0].page = NULL; + skb_shinfo(skb)->nr_frags = 0; + } + + i = xennet_fill_frags(np, skb, &tmpq); + + /* + * Truesize approximates the size of true data plus + * any supervisor overheads. Adding hypervisor + * overheads has been shown to significantly reduce + * achievable bandwidth with the default receive + * buffer size. It is therefore not wise to account + * for it here. + * + * After alloc_skb(RX_COPY_THRESHOLD), truesize is set + * to RX_COPY_THRESHOLD + the supervisor + * overheads. Here, we add the size of the data pulled + * in xennet_fill_frags(). + * + * We also adjust for any unused space in the main + * data area by subtracting (RX_COPY_THRESHOLD - + * len). This is especially important with drivers + * which split incoming packets into header and data, + * using only 66 bytes of the main data area (see the + * e1000 driver for example.) On such systems, + * without this last adjustement, our achievable + * receive throughout using the standard receive + * buffer size was cut by 25%(!!!). + */ + skb->truesize += skb->data_len - (RX_COPY_THRESHOLD - len); + skb->len += skb->data_len; + + if (rx->flags & NETRXF_csum_blank) + skb->ip_summed = CHECKSUM_PARTIAL; + else if (rx->flags & NETRXF_data_validated) + skb->ip_summed = CHECKSUM_UNNECESSARY; + + __skb_queue_tail(&rxq, skb); + + np->rx.rsp_cons = ++i; + work_done++; + } + + while ((skb = __skb_dequeue(&errq))) + kfree_skb(skb); + + work_done -= handle_incoming_queue(dev, &rxq); + + /* If we get a callback with very few responses, reduce fill target. */ + /* NB. Note exponential increase, linear decrease. */ + if (((np->rx.req_prod_pvt - np->rx.sring->rsp_prod) > + ((3*np->rx_target) / 4)) && + (--np->rx_target < np->rx_min_target)) + np->rx_target = np->rx_min_target; + + xennet_alloc_rx_buffers(dev); + + *pbudget -= work_done; + dev->quota -= work_done; + + if (work_done < budget) { + local_irq_save(flags); + + RING_FINAL_CHECK_FOR_RESPONSES(&np->rx, more_to_do); + if (!more_to_do) + __netif_rx_complete(dev); + + local_irq_restore(flags); + } + + spin_unlock(&np->rx_lock); + + return more_to_do; +} + +static int xennet_change_mtu(struct net_device *dev, int mtu) +{ + int max = xennet_can_sg(dev) ? 65535 - ETH_HLEN : ETH_DATA_LEN; + + if (mtu > max) + return -EINVAL; + dev->mtu = mtu; + return 0; +} + +static void xennet_release_tx_bufs(struct netfront_info *np) +{ + struct sk_buff *skb; + int i; + + for (i = 0; i < NET_TX_RING_SIZE; i++) { + /* Skip over entries which are actually freelist references */ + if ((unsigned long)np->tx_skbs[i].skb < PAGE_OFFSET) + continue; + + skb = np->tx_skbs[i].skb; + gnttab_end_foreign_access_ref(np->grant_tx_ref[i], + GNTMAP_readonly); + gnttab_release_grant_reference(&np->gref_tx_head, + np->grant_tx_ref[i]); + np->grant_tx_ref[i] = GRANT_INVALID_REF; + add_id_to_freelist(&np->tx_skb_freelist, np->tx_skbs, i); + dev_kfree_skb_irq(skb); + } +} + +static void xennet_release_rx_bufs(struct netfront_info *np) +{ + struct mmu_update *mmu = np->rx_mmu; + struct multicall_entry *mcl = np->rx_mcl; + struct sk_buff_head free_list; + struct sk_buff *skb; + unsigned long mfn; + int xfer = 0, noxfer = 0, unused = 0; + int id, ref; + + dev_warn(&np->netdev->dev, "%s: fix me for copying receiver.\n", + __func__); + return; + + skb_queue_head_init(&free_list); + + spin_lock_bh(&np->rx_lock); + + for (id = 0; id < NET_RX_RING_SIZE; id++) { + ref = np->grant_rx_ref[id]; + if (ref == GRANT_INVALID_REF) { + unused++; + continue; + } + + skb = np->rx_skbs[id]; + mfn = gnttab_end_foreign_transfer_ref(ref); + gnttab_release_grant_reference(&np->gref_rx_head, ref); + np->grant_rx_ref[id] = GRANT_INVALID_REF; + + if (0 == mfn) { + skb_shinfo(skb)->nr_frags = 0; + dev_kfree_skb(skb); + noxfer++; + continue; + } + + if (!xen_feature(XENFEAT_auto_translated_physmap)) { + /* Remap the page. */ + struct page *page = skb_shinfo(skb)->frags[0].page; + unsigned long pfn = page_to_pfn(page); + void *vaddr = page_address(page); + + MULTI_update_va_mapping(mcl, (unsigned long)vaddr, + mfn_pte(mfn, PAGE_KERNEL), + 0); + mcl++; + mmu->ptr = ((u64)mfn << PAGE_SHIFT) + | MMU_MACHPHYS_UPDATE; + mmu->val = pfn; + mmu++; + + set_phys_to_machine(pfn, mfn); + } + __skb_queue_tail(&free_list, skb); + xfer++; + } + + dev_info(&np->netdev->dev, "%s: %d xfer, %d noxfer, %d unused\n", + __func__, xfer, noxfer, unused); + + if (xfer) { + if (!xen_feature(XENFEAT_auto_translated_physmap)) { + /* Do all the remapping work and M2P updates. */ + MULTI_mmu_update(mcl, np->rx_mmu, mmu - np->rx_mmu, + 0, DOMID_SELF); + mcl++; + HYPERVISOR_multicall(np->rx_mcl, mcl - np->rx_mcl); + } + } + + while ((skb = __skb_dequeue(&free_list)) != NULL) + dev_kfree_skb(skb); + + spin_unlock_bh(&np->rx_lock); +} + +static void xennet_uninit(struct net_device *dev) +{ + struct netfront_info *np = netdev_priv(dev); + xennet_release_tx_bufs(np); + xennet_release_rx_bufs(np); + gnttab_free_grant_references(np->gref_tx_head); + gnttab_free_grant_references(np->gref_rx_head); +} + +static struct net_device * __devinit xennet_create_dev(struct xenbus_device *dev) +{ + int i, err; + struct net_device *netdev; + struct netfront_info *np; + + netdev = alloc_etherdev(sizeof(struct netfront_info)); + if (!netdev) { + printk(KERN_WARNING "%s> alloc_etherdev failed.\n", + __func__); + return ERR_PTR(-ENOMEM); + } + + np = netdev_priv(netdev); + np->xbdev = dev; + + spin_lock_init(&np->tx_lock); + spin_lock_init(&np->rx_lock); + + skb_queue_head_init(&np->rx_batch); + np->rx_target = RX_DFL_MIN_TARGET; + np->rx_min_target = RX_DFL_MIN_TARGET; + np->rx_max_target = RX_MAX_TARGET; + + init_timer(&np->rx_refill_timer); + np->rx_refill_timer.data = (unsigned long)netdev; + np->rx_refill_timer.function = rx_refill_timeout; + + /* Initialise tx_skbs as a free chain containing every entry. */ + np->tx_skb_freelist = 0; + for (i = 0; i < NET_TX_RING_SIZE; i++) { + np->tx_skbs[i].link = i+1; + np->grant_tx_ref[i] = GRANT_INVALID_REF; + } + + /* Clear out rx_skbs */ + for (i = 0; i < NET_RX_RING_SIZE; i++) { + np->rx_skbs[i] = NULL; + np->grant_rx_ref[i] = GRANT_INVALID_REF; + } + + /* A grant for every tx ring slot */ + if (gnttab_alloc_grant_references(TX_MAX_TARGET, + &np->gref_tx_head) < 0) { + printk(KERN_ALERT "#### netfront can't alloc tx grant refs\n"); + err = -ENOMEM; + goto exit; + } + /* A grant for every rx ring slot */ + if (gnttab_alloc_grant_references(RX_MAX_TARGET, + &np->gref_rx_head) < 0) { + printk(KERN_ALERT "#### netfront can't alloc rx grant refs\n"); + err = -ENOMEM; + goto exit_free_tx; + } + + netdev->open = xennet_open; + netdev->hard_start_xmit = xennet_start_xmit; + netdev->stop = xennet_close; + netdev->get_stats = xennet_get_stats; + netdev->poll = xennet_poll; + netdev->uninit = xennet_uninit; + netdev->change_mtu = xennet_change_mtu; + netdev->weight = 64; + netdev->features = NETIF_F_IP_CSUM; + + SET_ETHTOOL_OPS(netdev, &xennet_ethtool_ops); + SET_MODULE_OWNER(netdev); + SET_NETDEV_DEV(netdev, &dev->dev); + + np->netdev = netdev; + + netif_carrier_off(netdev); + + return netdev; + + exit_free_tx: + gnttab_free_grant_references(np->gref_tx_head); + exit: + free_netdev(netdev); + return ERR_PTR(err); +} + +/** + * Entry point to this code when a new device is created. Allocate the basic + * structures and the ring buffers for communication with the backend, and + * inform the backend of the appropriate details for those. + */ +static int __devinit netfront_probe(struct xenbus_device *dev, + const struct xenbus_device_id *id) +{ + int err; + struct net_device *netdev; + struct netfront_info *info; + + netdev = xennet_create_dev(dev); + if (IS_ERR(netdev)) { + err = PTR_ERR(netdev); + xenbus_dev_fatal(dev, err, "creating netdev"); + return err; + } + + info = netdev_priv(netdev); + dev->dev.driver_data = info; + + err = register_netdev(info->netdev); + if (err) { + printk(KERN_WARNING "%s: register_netdev err=%d\n", + __func__, err); + goto fail; + } + + err = xennet_sysfs_addif(info->netdev); + if (err) { + unregister_netdev(info->netdev); + printk(KERN_WARNING "%s: add sysfs failed err=%d\n", + __func__, err); + goto fail; + } + + return 0; + + fail: + free_netdev(netdev); + dev->dev.driver_data = NULL; + return err; +} + +static void xennet_end_access(int ref, void *page) +{ + /* This frees the page as a side-effect */ + if (ref != GRANT_INVALID_REF) + gnttab_end_foreign_access(ref, 0, (unsigned long)page); +} + +static void xennet_disconnect_backend(struct netfront_info *info) +{ + /* Stop old i/f to prevent errors whilst we rebuild the state. */ + spin_lock_bh(&info->rx_lock); + spin_lock_irq(&info->tx_lock); + netif_carrier_off(info->netdev); + spin_unlock_irq(&info->tx_lock); + spin_unlock_bh(&info->rx_lock); + + if (info->netdev->irq) + unbind_from_irqhandler(info->netdev->irq, info->netdev); + info->evtchn = info->netdev->irq = 0; + + /* End access and free the pages */ + xennet_end_access(info->tx_ring_ref, info->tx.sring); + xennet_end_access(info->rx_ring_ref, info->rx.sring); + + info->tx_ring_ref = GRANT_INVALID_REF; + info->rx_ring_ref = GRANT_INVALID_REF; + info->tx.sring = NULL; + info->rx.sring = NULL; +} + +/** + * We are reconnecting to the backend, due to a suspend/resume, or a backend + * driver restart. We tear down our netif structure and recreate it, but + * leave the device-layer structures intact so that this is transparent to the + * rest of the kernel. + */ +static int netfront_resume(struct xenbus_device *dev) +{ + struct netfront_info *info = dev->dev.driver_data; + + dev_dbg(&dev->dev, "%s\n", dev->nodename); + + xennet_disconnect_backend(info); + return 0; +} + +static int xen_net_read_mac(struct xenbus_device *dev, u8 mac[]) +{ + char *s, *e, *macstr; + int i; + + macstr = s = xenbus_read(XBT_NIL, dev->nodename, "mac", NULL); + if (IS_ERR(macstr)) + return PTR_ERR(macstr); + + for (i = 0; i < ETH_ALEN; i++) { + mac[i] = simple_strtoul(s, &e, 16); + if ((s == e) || (*e != ((i == ETH_ALEN-1) ? '\0' : ':'))) { + kfree(macstr); + return -ENOENT; + } + s = e+1; + } + + kfree(macstr); + return 0; +} + +static irqreturn_t xennet_interrupt(int irq, void *dev_id) +{ + struct net_device *dev = dev_id; + struct netfront_info *np = netdev_priv(dev); + unsigned long flags; + + spin_lock_irqsave(&np->tx_lock, flags); + + if (likely(netif_carrier_ok(dev))) { + xennet_tx_buf_gc(dev); + /* Under tx_lock: protects access to rx shared-ring indexes. */ + if (RING_HAS_UNCONSUMED_RESPONSES(&np->rx)) + netif_rx_schedule(dev); + } + + spin_unlock_irqrestore(&np->tx_lock, flags); + + return IRQ_HANDLED; +} + +static int setup_netfront(struct xenbus_device *dev, struct netfront_info *info) +{ + struct xen_netif_tx_sring *txs; + struct xen_netif_rx_sring *rxs; + int err; + struct net_device *netdev = info->netdev; + + info->tx_ring_ref = GRANT_INVALID_REF; + info->rx_ring_ref = GRANT_INVALID_REF; + info->rx.sring = NULL; + info->tx.sring = NULL; + netdev->irq = 0; + + err = xen_net_read_mac(dev, netdev->dev_addr); + if (err) { + xenbus_dev_fatal(dev, err, "parsing %s/mac", dev->nodename); + goto fail; + } + + txs = (struct xen_netif_tx_sring *)get_zeroed_page(GFP_KERNEL); + if (!txs) { + err = -ENOMEM; + xenbus_dev_fatal(dev, err, "allocating tx ring page"); + goto fail; + } + SHARED_RING_INIT(txs); + FRONT_RING_INIT(&info->tx, txs, PAGE_SIZE); + + err = xenbus_grant_ring(dev, virt_to_mfn(txs)); + if (err < 0) { + free_page((unsigned long)txs); + goto fail; + } + + info->tx_ring_ref = err; + rxs = (struct xen_netif_rx_sring *)get_zeroed_page(GFP_KERNEL); + if (!rxs) { + err = -ENOMEM; + xenbus_dev_fatal(dev, err, "allocating rx ring page"); + goto fail; + } + SHARED_RING_INIT(rxs); + FRONT_RING_INIT(&info->rx, rxs, PAGE_SIZE); + + err = xenbus_grant_ring(dev, virt_to_mfn(rxs)); + if (err < 0) { + free_page((unsigned long)rxs); + goto fail; + } + info->rx_ring_ref = err; + + err = xenbus_alloc_evtchn(dev, &info->evtchn); + if (err) + goto fail; + + err = bind_evtchn_to_irqhandler(info->evtchn, xennet_interrupt, + IRQF_SAMPLE_RANDOM, netdev->name, + netdev); + if (err < 0) + goto fail; + netdev->irq = err; + return 0; + + fail: + return err; +} + +/* Common code used when first setting up, and when resuming. */ +static int talk_to_backend(struct xenbus_device *dev, + struct netfront_info *info) +{ + const char *message; + struct xenbus_transaction xbt; + int err; + + /* Create shared ring, alloc event channel. */ + err = setup_netfront(dev, info); + if (err) + goto out; + +again: + err = xenbus_transaction_start(&xbt); + if (err) { + xenbus_dev_fatal(dev, err, "starting transaction"); + goto destroy_ring; + } + + err = xenbus_printf(xbt, dev->nodename, "tx-ring-ref", "%u", + info->tx_ring_ref); + if (err) { + message = "writing tx ring-ref"; + goto abort_transaction; + } + err = xenbus_printf(xbt, dev->nodename, "rx-ring-ref", "%u", + info->rx_ring_ref); + if (err) { + message = "writing rx ring-ref"; + goto abort_transaction; + } + err = xenbus_printf(xbt, dev->nodename, + "event-channel", "%u", info->evtchn); + if (err) { + message = "writing event-channel"; + goto abort_transaction; + } + + err = xenbus_printf(xbt, dev->nodename, "request-rx-copy", "%u", + 1); + if (err) { + message = "writing request-rx-copy"; + goto abort_transaction; + } + + err = xenbus_printf(xbt, dev->nodename, "feature-rx-notify", "%d", 1); + if (err) { + message = "writing feature-rx-notify"; + goto abort_transaction; + } + + err = xenbus_printf(xbt, dev->nodename, "feature-sg", "%d", 1); + if (err) { + message = "writing feature-sg"; + goto abort_transaction; + } + + err = xenbus_printf(xbt, dev->nodename, "feature-gso-tcpv4", "%d", 1); + if (err) { + message = "writing feature-gso-tcpv4"; + goto abort_transaction; + } + + err = xenbus_transaction_end(xbt, 0); + if (err) { + if (err == -EAGAIN) + goto again; + xenbus_dev_fatal(dev, err, "completing transaction"); + goto destroy_ring; + } + + return 0; + + abort_transaction: + xenbus_transaction_end(xbt, 1); + xenbus_dev_fatal(dev, err, "%s", message); + destroy_ring: + xennet_disconnect_backend(info); + out: + return err; +} + +static int xennet_set_sg(struct net_device *dev, u32 data) +{ + if (data) { + struct netfront_info *np = netdev_priv(dev); + int val; + + if (xenbus_scanf(XBT_NIL, np->xbdev->otherend, "feature-sg", + "%d", &val) < 0) + val = 0; + if (!val) + return -ENOSYS; + } else if (dev->mtu > ETH_DATA_LEN) + dev->mtu = ETH_DATA_LEN; + + return ethtool_op_set_sg(dev, data); +} + +static int xennet_set_tso(struct net_device *dev, u32 data) +{ + if (data) { + struct netfront_info *np = netdev_priv(dev); + int val; + + if (xenbus_scanf(XBT_NIL, np->xbdev->otherend, + "feature-gso-tcpv4", "%d", &val) < 0) + val = 0; + if (!val) + return -ENOSYS; + } + + return ethtool_op_set_tso(dev, data); +} + +static void xennet_set_features(struct net_device *dev) +{ + /* Turn off all GSO bits except ROBUST. */ + dev->features &= (1 << NETIF_F_GSO_SHIFT) - 1; + dev->features |= NETIF_F_GSO_ROBUST; + xennet_set_sg(dev, 0); + + /* We need checksum offload to enable scatter/gather and TSO. */ + if (!(dev->features & NETIF_F_IP_CSUM)) + return; + + if (!xennet_set_sg(dev, 1)) + xennet_set_tso(dev, 1); +} + +static int xennet_connect(struct net_device *dev) +{ + struct netfront_info *np = netdev_priv(dev); + int i, requeue_idx, err; + struct sk_buff *skb; + grant_ref_t ref; + struct xen_netif_rx_request *req; + unsigned int feature_rx_copy; + + err = xenbus_scanf(XBT_NIL, np->xbdev->otherend, + "feature-rx-copy", "%u", &feature_rx_copy); + if (err != 1) + feature_rx_copy = 0; + + if (!feature_rx_copy) { + dev_info(&dev->dev, + "backend does not support copying recieve path"); + return -ENODEV; + } + + err = talk_to_backend(np->xbdev, np); + if (err) + return err; + + xennet_set_features(dev); + + spin_lock_bh(&np->rx_lock); + spin_lock_irq(&np->tx_lock); + + /* Step 1: Discard all pending TX packet fragments. */ + xennet_release_tx_bufs(np); + + /* Step 2: Rebuild the RX buffer freelist and the RX ring itself. */ + for (requeue_idx = 0, i = 0; i < NET_RX_RING_SIZE; i++) { + if (!np->rx_skbs[i]) + continue; + + skb = np->rx_skbs[requeue_idx] = xennet_get_rx_skb(np, i); + ref = np->grant_rx_ref[requeue_idx] = xennet_get_rx_ref(np, i); + req = RING_GET_REQUEST(&np->rx, requeue_idx); + + gnttab_grant_foreign_access_ref( + ref, np->xbdev->otherend_id, + pfn_to_mfn(page_to_pfn(skb_shinfo(skb)-> + frags->page)), + 0); + req->gref = ref; + req->id = requeue_idx; + + requeue_idx++; + } + + np->rx.req_prod_pvt = requeue_idx; + + /* + * Step 3: All public and private state should now be sane. Get + * ready to start sending and receiving packets and give the driver + * domain a kick because we've probably just requeued some + * packets. + */ + netif_carrier_on(np->netdev); + notify_remote_via_irq(np->netdev->irq); + xennet_tx_buf_gc(dev); + xennet_alloc_rx_buffers(dev); + + spin_unlock_irq(&np->tx_lock); + spin_unlock_bh(&np->rx_lock); + + return 0; +} + +/** + * Callback received when the backend's state changes. + */ +static void backend_changed(struct xenbus_device *dev, + enum xenbus_state backend_state) +{ + struct netfront_info *np = dev->dev.driver_data; + struct net_device *netdev = np->netdev; + + dev_dbg(&dev->dev, "%s\n", xenbus_strstate(backend_state)); + + switch (backend_state) { + case XenbusStateInitialising: + case XenbusStateInitialised: + case XenbusStateConnected: + case XenbusStateUnknown: + case XenbusStateClosed: + break; + + case XenbusStateInitWait: + if (dev->state != XenbusStateInitialising) + break; + if (xennet_connect(netdev) != 0) + break; + xenbus_switch_state(dev, XenbusStateConnected); + break; + + case XenbusStateClosing: + xenbus_frontend_closed(dev); + break; + } +} + +static struct ethtool_ops xennet_ethtool_ops = +{ + .get_tx_csum = ethtool_op_get_tx_csum, + .set_tx_csum = ethtool_op_set_tx_csum, + .get_sg = ethtool_op_get_sg, + .set_sg = xennet_set_sg, + .get_tso = ethtool_op_get_tso, + .set_tso = xennet_set_tso, + .get_link = ethtool_op_get_link, +}; + +#ifdef CONFIG_SYSFS +static ssize_t show_rxbuf_min(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct net_device *netdev = to_net_dev(dev); + struct netfront_info *info = netdev_priv(netdev); + + return sprintf(buf, "%u\n", info->rx_min_target); +} + +static ssize_t store_rxbuf_min(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t len) +{ + struct net_device *netdev = to_net_dev(dev); + struct netfront_info *np = netdev_priv(netdev); + char *endp; + unsigned long target; + + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + + target = simple_strtoul(buf, &endp, 0); + if (endp == buf) + return -EBADMSG; + + if (target < RX_MIN_TARGET) + target = RX_MIN_TARGET; + if (target > RX_MAX_TARGET) + target = RX_MAX_TARGET; + + spin_lock_bh(&np->rx_lock); + if (target > np->rx_max_target) + np->rx_max_target = target; + np->rx_min_target = target; + if (target > np->rx_target) + np->rx_target = target; + + xennet_alloc_rx_buffers(netdev); + + spin_unlock_bh(&np->rx_lock); + return len; +} + +static ssize_t show_rxbuf_max(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct net_device *netdev = to_net_dev(dev); + struct netfront_info *info = netdev_priv(netdev); + + return sprintf(buf, "%u\n", info->rx_max_target); +} + +static ssize_t store_rxbuf_max(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t len) +{ + struct net_device *netdev = to_net_dev(dev); + struct netfront_info *np = netdev_priv(netdev); + char *endp; + unsigned long target; + + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + + target = simple_strtoul(buf, &endp, 0); + if (endp == buf) + return -EBADMSG; + + if (target < RX_MIN_TARGET) + target = RX_MIN_TARGET; + if (target > RX_MAX_TARGET) + target = RX_MAX_TARGET; + + spin_lock_bh(&np->rx_lock); + if (target < np->rx_min_target) + np->rx_min_target = target; + np->rx_max_target = target; + if (target < np->rx_target) + np->rx_target = target; + + xennet_alloc_rx_buffers(netdev); + + spin_unlock_bh(&np->rx_lock); + return len; +} + +static ssize_t show_rxbuf_cur(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct net_device *netdev = to_net_dev(dev); + struct netfront_info *info = netdev_priv(netdev); + + return sprintf(buf, "%u\n", info->rx_target); +} + +static struct device_attribute xennet_attrs[] = { + __ATTR(rxbuf_min, S_IRUGO|S_IWUSR, show_rxbuf_min, store_rxbuf_min), + __ATTR(rxbuf_max, S_IRUGO|S_IWUSR, show_rxbuf_max, store_rxbuf_max), + __ATTR(rxbuf_cur, S_IRUGO, show_rxbuf_cur, NULL), +}; + +static int xennet_sysfs_addif(struct net_device *netdev) +{ + int i; + int err; + + for (i = 0; i < ARRAY_SIZE(xennet_attrs); i++) { + err = device_create_file(&netdev->dev, + &xennet_attrs[i]); + if (err) + goto fail; + } + return 0; + + fail: + while (--i >= 0) + device_remove_file(&netdev->dev, &xennet_attrs[i]); + return err; +} + +static void xennet_sysfs_delif(struct net_device *netdev) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(xennet_attrs); i++) + device_remove_file(&netdev->dev, &xennet_attrs[i]); +} + +#endif /* CONFIG_SYSFS */ + +static struct xenbus_device_id netfront_ids[] = { + { "vif" }, + { "" } +}; + + +static int __devexit xennet_remove(struct xenbus_device *dev) +{ + struct netfront_info *info = dev->dev.driver_data; + + dev_dbg(&dev->dev, "%s\n", dev->nodename); + + unregister_netdev(info->netdev); + + xennet_disconnect_backend(info); + + del_timer_sync(&info->rx_refill_timer); + + xennet_sysfs_delif(info->netdev); + + free_netdev(info->netdev); + + return 0; +} + +static struct xenbus_driver netfront = { + .name = "vif", + .owner = THIS_MODULE, + .ids = netfront_ids, + .probe = netfront_probe, + .remove = __devexit_p(xennet_remove), + .resume = netfront_resume, + .otherend_changed = backend_changed, +}; + +static int __init netif_init(void) +{ + if (!is_running_on_xen()) + return -ENODEV; + + if (is_initial_xendomain()) + return 0; + + printk(KERN_INFO "Initialising Xen virtual ethernet driver.\n"); + + return xenbus_register_frontend(&netfront); +} +module_init(netif_init); + + +static void __exit netif_exit(void) +{ + if (is_initial_xendomain()) + return; + + return xenbus_unregister_driver(&netfront); +} +module_exit(netif_exit); + +MODULE_DESCRIPTION("Xen virtual network device frontend"); +MODULE_LICENSE("GPL"); |