| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <20121113151536.50d0292e8cb88b10686b576e@canb.auug.org.au>
Date: Tue, 13 Nov 2012 15:15:36 +1100
From: Stephen Rothwell <sfr@...b.auug.org.au>
To: Olof Johansson <olof@...om.net>, Arnd Bergmann <arnd@...db.de>,
<linux-arm-kernel@...ts.infradead.org>
Cc: linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
"Jean-Christophe PLAGNIOL-VILLARD" <plagnioj@...osoft.com>,
David Miller <davem@...emloft.net>, <netdev@...r.kernel.org>,
Joachim Eastwood <manabian@...il.com>
Subject: linux-next: manual merge of the arm-soc tree with the net-next tree
Hi all,
Today's linux-next merge of the arm-soc tree got a conflict in
drivers/net/ethernet/cadence/at91_ether.c between various commits from
the net-next tree and commit bcd2360c1ff9 ("arm: at91: move platfarm_data
to include/linux/platform_data/atmel.h") from the arm-soc tree.
I fixed it up (I think - see below) and can carry the fix as necessary
(no action is required).
--
Cheers,
Stephen Rothwell sfr@...b.auug.org.au
diff --cc drivers/net/ethernet/cadence/at91_ether.c
index e7a476c,35fc6edb..0000000
--- a/drivers/net/ethernet/cadence/at91_ether.c
+++ b/drivers/net/ethernet/cadence/at91_ether.c
@@@ -25,53 -31,728 +25,54 @@@
#include <linux/clk.h>
#include <linux/gfp.h>
#include <linux/phy.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_net.h>
+#include <linux/pinctrl/consumer.h>
+ #include <linux/platform_data/atmel.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
-#include <asm/mach-types.h>
-
-#include <mach/at91rm9200_emac.h>
-#include <asm/gpio.h>
-
-#include "at91_ether.h"
-
-#define DRV_NAME "at91_ether"
-#define DRV_VERSION "1.0"
-
-#define LINK_POLL_INTERVAL (HZ)
-
-/* ..................................................................... */
-
-/*
- * Read from a EMAC register.
- */
-static inline unsigned long at91_emac_read(struct at91_private *lp, unsigned int reg)
-{
- return __raw_readl(lp->emac_base + reg);
-}
-
-/*
- * Write to a EMAC register.
- */
-static inline void at91_emac_write(struct at91_private *lp, unsigned int reg, unsigned long value)
-{
- __raw_writel(value, lp->emac_base + reg);
-}
-
-/* ........................... PHY INTERFACE ........................... */
-
-/*
- * Enable the MDIO bit in MAC control register
- * When not called from an interrupt-handler, access to the PHY must be
- * protected by a spinlock.
- */
-static void enable_mdi(struct at91_private *lp)
-{
- unsigned long ctl;
-
- ctl = at91_emac_read(lp, AT91_EMAC_CTL);
- at91_emac_write(lp, AT91_EMAC_CTL, ctl | AT91_EMAC_MPE); /* enable management port */
-}
-
-/*
- * Disable the MDIO bit in the MAC control register
- */
-static void disable_mdi(struct at91_private *lp)
-{
- unsigned long ctl;
-
- ctl = at91_emac_read(lp, AT91_EMAC_CTL);
- at91_emac_write(lp, AT91_EMAC_CTL, ctl & ~AT91_EMAC_MPE); /* disable management port */
-}
-
-/*
- * Wait until the PHY operation is complete.
- */
-static inline void at91_phy_wait(struct at91_private *lp)
-{
- unsigned long timeout = jiffies + 2;
-
- while (!(at91_emac_read(lp, AT91_EMAC_SR) & AT91_EMAC_SR_IDLE)) {
- if (time_after(jiffies, timeout)) {
- printk("at91_ether: MIO timeout\n");
- break;
- }
- cpu_relax();
- }
-}
-
-/*
- * Write value to the a PHY register
- * Note: MDI interface is assumed to already have been enabled.
- */
-static void write_phy(struct at91_private *lp, unsigned char phy_addr, unsigned char address, unsigned int value)
-{
- at91_emac_write(lp, AT91_EMAC_MAN, AT91_EMAC_MAN_802_3 | AT91_EMAC_RW_W
- | ((phy_addr & 0x1f) << 23) | (address << 18) | (value & AT91_EMAC_DATA));
-
- /* Wait until IDLE bit in Network Status register is cleared */
- at91_phy_wait(lp);
-}
-
-/*
- * Read value stored in a PHY register.
- * Note: MDI interface is assumed to already have been enabled.
- */
-static void read_phy(struct at91_private *lp, unsigned char phy_addr, unsigned char address, unsigned int *value)
-{
- at91_emac_write(lp, AT91_EMAC_MAN, AT91_EMAC_MAN_802_3 | AT91_EMAC_RW_R
- | ((phy_addr & 0x1f) << 23) | (address << 18));
-
- /* Wait until IDLE bit in Network Status register is cleared */
- at91_phy_wait(lp);
-
- *value = at91_emac_read(lp, AT91_EMAC_MAN) & AT91_EMAC_DATA;
-}
-
-/* ........................... PHY MANAGEMENT .......................... */
-
-/*
- * Access the PHY to determine the current link speed and mode, and update the
- * MAC accordingly.
- * If no link or auto-negotiation is busy, then no changes are made.
- */
-static void update_linkspeed(struct net_device *dev, int silent)
-{
- struct at91_private *lp = netdev_priv(dev);
- unsigned int bmsr, bmcr, lpa, mac_cfg;
- unsigned int speed, duplex;
-
- if (!mii_link_ok(&lp->mii)) { /* no link */
- netif_carrier_off(dev);
- if (!silent)
- printk(KERN_INFO "%s: Link down.\n", dev->name);
- return;
- }
-
- /* Link up, or auto-negotiation still in progress */
- read_phy(lp, lp->phy_address, MII_BMSR, &bmsr);
- read_phy(lp, lp->phy_address, MII_BMCR, &bmcr);
- if (bmcr & BMCR_ANENABLE) { /* AutoNegotiation is enabled */
- if (!(bmsr & BMSR_ANEGCOMPLETE))
- return; /* Do nothing - another interrupt generated when negotiation complete */
-
- read_phy(lp, lp->phy_address, MII_LPA, &lpa);
- if ((lpa & LPA_100FULL) || (lpa & LPA_100HALF)) speed = SPEED_100;
- else speed = SPEED_10;
- if ((lpa & LPA_100FULL) || (lpa & LPA_10FULL)) duplex = DUPLEX_FULL;
- else duplex = DUPLEX_HALF;
- } else {
- speed = (bmcr & BMCR_SPEED100) ? SPEED_100 : SPEED_10;
- duplex = (bmcr & BMCR_FULLDPLX) ? DUPLEX_FULL : DUPLEX_HALF;
- }
-
- /* Update the MAC */
- mac_cfg = at91_emac_read(lp, AT91_EMAC_CFG) & ~(AT91_EMAC_SPD | AT91_EMAC_FD);
- if (speed == SPEED_100) {
- if (duplex == DUPLEX_FULL) /* 100 Full Duplex */
- mac_cfg |= AT91_EMAC_SPD | AT91_EMAC_FD;
- else /* 100 Half Duplex */
- mac_cfg |= AT91_EMAC_SPD;
- } else {
- if (duplex == DUPLEX_FULL) /* 10 Full Duplex */
- mac_cfg |= AT91_EMAC_FD;
- else {} /* 10 Half Duplex */
- }
- at91_emac_write(lp, AT91_EMAC_CFG, mac_cfg);
-
- if (!silent)
- printk(KERN_INFO "%s: Link now %i-%s\n", dev->name, speed, (duplex == DUPLEX_FULL) ? "FullDuplex" : "HalfDuplex");
- netif_carrier_on(dev);
-}
-
-/*
- * Handle interrupts from the PHY
- */
-static irqreturn_t at91ether_phy_interrupt(int irq, void *dev_id)
-{
- struct net_device *dev = (struct net_device *) dev_id;
- struct at91_private *lp = netdev_priv(dev);
- unsigned int phy;
-
- /*
- * This hander is triggered on both edges, but the PHY chips expect
- * level-triggering. We therefore have to check if the PHY actually has
- * an IRQ pending.
- */
- enable_mdi(lp);
- if ((lp->phy_type == MII_DM9161_ID) || (lp->phy_type == MII_DM9161A_ID)) {
- read_phy(lp, lp->phy_address, MII_DSINTR_REG, &phy); /* ack interrupt in Davicom PHY */
- if (!(phy & (1 << 0)))
- goto done;
- }
- else if (lp->phy_type == MII_LXT971A_ID) {
- read_phy(lp, lp->phy_address, MII_ISINTS_REG, &phy); /* ack interrupt in Intel PHY */
- if (!(phy & (1 << 2)))
- goto done;
- }
- else if (lp->phy_type == MII_BCM5221_ID) {
- read_phy(lp, lp->phy_address, MII_BCMINTR_REG, &phy); /* ack interrupt in Broadcom PHY */
- if (!(phy & (1 << 0)))
- goto done;
- }
- else if (lp->phy_type == MII_KS8721_ID) {
- read_phy(lp, lp->phy_address, MII_TPISTATUS, &phy); /* ack interrupt in Micrel PHY */
- if (!(phy & ((1 << 2) | 1)))
- goto done;
- }
- else if (lp->phy_type == MII_T78Q21x3_ID) { /* ack interrupt in Teridian PHY */
- read_phy(lp, lp->phy_address, MII_T78Q21INT_REG, &phy);
- if (!(phy & ((1 << 2) | 1)))
- goto done;
- }
- else if (lp->phy_type == MII_DP83848_ID) {
- read_phy(lp, lp->phy_address, MII_DPPHYSTS_REG, &phy); /* ack interrupt in DP83848 PHY */
- if (!(phy & (1 << 7)))
- goto done;
- }
-
- update_linkspeed(dev, 0);
-
-done:
- disable_mdi(lp);
-
- return IRQ_HANDLED;
-}
-
-/*
- * Initialize and enable the PHY interrupt for link-state changes
- */
-static void enable_phyirq(struct net_device *dev)
-{
- struct at91_private *lp = netdev_priv(dev);
- unsigned int dsintr, irq_number;
- int status;
-
- if (!gpio_is_valid(lp->board_data.phy_irq_pin)) {
- /*
- * PHY doesn't have an IRQ pin (RTL8201, DP83847, AC101L),
- * or board does not have it connected.
- */
- mod_timer(&lp->check_timer, jiffies + LINK_POLL_INTERVAL);
- return;
- }
-
- irq_number = gpio_to_irq(lp->board_data.phy_irq_pin);
- status = request_irq(irq_number, at91ether_phy_interrupt, 0, dev->name, dev);
- if (status) {
- printk(KERN_ERR "at91_ether: PHY IRQ %d request failed - status %d!\n", irq_number, status);
- return;
- }
-
- spin_lock_irq(&lp->lock);
- enable_mdi(lp);
-
- if ((lp->phy_type == MII_DM9161_ID) || (lp->phy_type == MII_DM9161A_ID)) { /* for Davicom PHY */
- read_phy(lp, lp->phy_address, MII_DSINTR_REG, &dsintr);
- dsintr = dsintr & ~0xf00; /* clear bits 8..11 */
- write_phy(lp, lp->phy_address, MII_DSINTR_REG, dsintr);
- }
- else if (lp->phy_type == MII_LXT971A_ID) { /* for Intel PHY */
- read_phy(lp, lp->phy_address, MII_ISINTE_REG, &dsintr);
- dsintr = dsintr | 0xf2; /* set bits 1, 4..7 */
- write_phy(lp, lp->phy_address, MII_ISINTE_REG, dsintr);
- }
- else if (lp->phy_type == MII_BCM5221_ID) { /* for Broadcom PHY */
- dsintr = (1 << 15) | ( 1 << 14);
- write_phy(lp, lp->phy_address, MII_BCMINTR_REG, dsintr);
- }
- else if (lp->phy_type == MII_KS8721_ID) { /* for Micrel PHY */
- dsintr = (1 << 10) | ( 1 << 8);
- write_phy(lp, lp->phy_address, MII_TPISTATUS, dsintr);
- }
- else if (lp->phy_type == MII_T78Q21x3_ID) { /* for Teridian PHY */
- read_phy(lp, lp->phy_address, MII_T78Q21INT_REG, &dsintr);
- dsintr = dsintr | 0x500; /* set bits 8, 10 */
- write_phy(lp, lp->phy_address, MII_T78Q21INT_REG, dsintr);
- }
- else if (lp->phy_type == MII_DP83848_ID) { /* National Semiconductor DP83848 PHY */
- read_phy(lp, lp->phy_address, MII_DPMISR_REG, &dsintr);
- dsintr = dsintr | 0x3c; /* set bits 2..5 */
- write_phy(lp, lp->phy_address, MII_DPMISR_REG, dsintr);
- read_phy(lp, lp->phy_address, MII_DPMICR_REG, &dsintr);
- dsintr = dsintr | 0x3; /* set bits 0,1 */
- write_phy(lp, lp->phy_address, MII_DPMICR_REG, dsintr);
- }
-
- disable_mdi(lp);
- spin_unlock_irq(&lp->lock);
-}
-
-/*
- * Disable the PHY interrupt
- */
-static void disable_phyirq(struct net_device *dev)
-{
- struct at91_private *lp = netdev_priv(dev);
- unsigned int dsintr;
- unsigned int irq_number;
-
- if (!gpio_is_valid(lp->board_data.phy_irq_pin)) {
- del_timer_sync(&lp->check_timer);
- return;
- }
-
- spin_lock_irq(&lp->lock);
- enable_mdi(lp);
-
- if ((lp->phy_type == MII_DM9161_ID) || (lp->phy_type == MII_DM9161A_ID)) { /* for Davicom PHY */
- read_phy(lp, lp->phy_address, MII_DSINTR_REG, &dsintr);
- dsintr = dsintr | 0xf00; /* set bits 8..11 */
- write_phy(lp, lp->phy_address, MII_DSINTR_REG, dsintr);
- }
- else if (lp->phy_type == MII_LXT971A_ID) { /* for Intel PHY */
- read_phy(lp, lp->phy_address, MII_ISINTE_REG, &dsintr);
- dsintr = dsintr & ~0xf2; /* clear bits 1, 4..7 */
- write_phy(lp, lp->phy_address, MII_ISINTE_REG, dsintr);
- }
- else if (lp->phy_type == MII_BCM5221_ID) { /* for Broadcom PHY */
- read_phy(lp, lp->phy_address, MII_BCMINTR_REG, &dsintr);
- dsintr = ~(1 << 14);
- write_phy(lp, lp->phy_address, MII_BCMINTR_REG, dsintr);
- }
- else if (lp->phy_type == MII_KS8721_ID) { /* for Micrel PHY */
- read_phy(lp, lp->phy_address, MII_TPISTATUS, &dsintr);
- dsintr = ~((1 << 10) | (1 << 8));
- write_phy(lp, lp->phy_address, MII_TPISTATUS, dsintr);
- }
- else if (lp->phy_type == MII_T78Q21x3_ID) { /* for Teridian PHY */
- read_phy(lp, lp->phy_address, MII_T78Q21INT_REG, &dsintr);
- dsintr = dsintr & ~0x500; /* clear bits 8, 10 */
- write_phy(lp, lp->phy_address, MII_T78Q21INT_REG, dsintr);
- }
- else if (lp->phy_type == MII_DP83848_ID) { /* National Semiconductor DP83848 PHY */
- read_phy(lp, lp->phy_address, MII_DPMICR_REG, &dsintr);
- dsintr = dsintr & ~0x3; /* clear bits 0, 1 */
- write_phy(lp, lp->phy_address, MII_DPMICR_REG, dsintr);
- read_phy(lp, lp->phy_address, MII_DPMISR_REG, &dsintr);
- dsintr = dsintr & ~0x3c; /* clear bits 2..5 */
- write_phy(lp, lp->phy_address, MII_DPMISR_REG, dsintr);
- }
-
- disable_mdi(lp);
- spin_unlock_irq(&lp->lock);
-
- irq_number = gpio_to_irq(lp->board_data.phy_irq_pin);
- free_irq(irq_number, dev); /* Free interrupt handler */
-}
-
-/*
- * Perform a software reset of the PHY.
- */
-#if 0
-static void reset_phy(struct net_device *dev)
-{
- struct at91_private *lp = netdev_priv(dev);
- unsigned int bmcr;
-
- spin_lock_irq(&lp->lock);
- enable_mdi(lp);
-
- /* Perform PHY reset */
- write_phy(lp, lp->phy_address, MII_BMCR, BMCR_RESET);
-
- /* Wait until PHY reset is complete */
- do {
- read_phy(lp, lp->phy_address, MII_BMCR, &bmcr);
- } while (!(bmcr & BMCR_RESET));
-
- disable_mdi(lp);
- spin_unlock_irq(&lp->lock);
-}
-#endif
-
-static void at91ether_check_link(unsigned long dev_id)
-{
- struct net_device *dev = (struct net_device *) dev_id;
- struct at91_private *lp = netdev_priv(dev);
-
- enable_mdi(lp);
- update_linkspeed(dev, 1);
- disable_mdi(lp);
-
- mod_timer(&lp->check_timer, jiffies + LINK_POLL_INTERVAL);
-}
-
-/*
- * Perform any PHY-specific initialization.
- */
-static void __init initialize_phy(struct at91_private *lp)
-{
- unsigned int val;
-
- spin_lock_irq(&lp->lock);
- enable_mdi(lp);
-
- if ((lp->phy_type == MII_DM9161_ID) || (lp->phy_type == MII_DM9161A_ID)) {
- read_phy(lp, lp->phy_address, MII_DSCR_REG, &val);
- if ((val & (1 << 10)) == 0) /* DSCR bit 10 is 0 -- fiber mode */
- lp->phy_media = PORT_FIBRE;
- } else if (machine_is_csb337()) {
- /* mix link activity status into LED2 link state */
- write_phy(lp, lp->phy_address, MII_LEDCTRL_REG, 0x0d22);
- } else if (machine_is_ecbat91())
- write_phy(lp, lp->phy_address, MII_LEDCTRL_REG, 0x156A);
-
- disable_mdi(lp);
- spin_unlock_irq(&lp->lock);
-}
-
-/* ......................... ADDRESS MANAGEMENT ........................ */
-
-/*
- * NOTE: Your bootloader must always set the MAC address correctly before
- * booting into Linux.
- *
- * - It must always set the MAC address after reset, even if it doesn't
- * happen to access the Ethernet while it's booting. Some versions of
- * U-Boot on the AT91RM9200-DK do not do this.
- *
- * - Likewise it must store the addresses in the correct byte order.
- * MicroMonitor (uMon) on the CSB337 does this incorrectly (and
- * continues to do so, for bug-compatibility).
- */
-
-static short __init unpack_mac_address(struct net_device *dev, unsigned int hi, unsigned int lo)
-{
- char addr[6];
-
- if (machine_is_csb337()) {
- addr[5] = (lo & 0xff); /* The CSB337 bootloader stores the MAC the wrong-way around */
- addr[4] = (lo & 0xff00) >> 8;
- addr[3] = (lo & 0xff0000) >> 16;
- addr[2] = (lo & 0xff000000) >> 24;
- addr[1] = (hi & 0xff);
- addr[0] = (hi & 0xff00) >> 8;
- }
- else {
- addr[0] = (lo & 0xff);
- addr[1] = (lo & 0xff00) >> 8;
- addr[2] = (lo & 0xff0000) >> 16;
- addr[3] = (lo & 0xff000000) >> 24;
- addr[4] = (hi & 0xff);
- addr[5] = (hi & 0xff00) >> 8;
- }
-
- if (is_valid_ether_addr(addr)) {
- memcpy(dev->dev_addr, &addr, 6);
- return 1;
- }
- return 0;
-}
-
-/*
- * Set the ethernet MAC address in dev->dev_addr
- */
-static void __init get_mac_address(struct net_device *dev)
-{
- struct at91_private *lp = netdev_priv(dev);
-
- /* Check Specific-Address 1 */
- if (unpack_mac_address(dev, at91_emac_read(lp, AT91_EMAC_SA1H), at91_emac_read(lp, AT91_EMAC_SA1L)))
- return;
- /* Check Specific-Address 2 */
- if (unpack_mac_address(dev, at91_emac_read(lp, AT91_EMAC_SA2H), at91_emac_read(lp, AT91_EMAC_SA2L)))
- return;
- /* Check Specific-Address 3 */
- if (unpack_mac_address(dev, at91_emac_read(lp, AT91_EMAC_SA3H), at91_emac_read(lp, AT91_EMAC_SA3L)))
- return;
- /* Check Specific-Address 4 */
- if (unpack_mac_address(dev, at91_emac_read(lp, AT91_EMAC_SA4H), at91_emac_read(lp, AT91_EMAC_SA4L)))
- return;
-
- printk(KERN_ERR "at91_ether: Your bootloader did not configure a MAC address.\n");
-}
-
-/*
- * Program the hardware MAC address from dev->dev_addr.
- */
-static void update_mac_address(struct net_device *dev)
-{
- struct at91_private *lp = netdev_priv(dev);
-
- at91_emac_write(lp, AT91_EMAC_SA1L, (dev->dev_addr[3] << 24) | (dev->dev_addr[2] << 16) | (dev->dev_addr[1] << 8) | (dev->dev_addr[0]));
- at91_emac_write(lp, AT91_EMAC_SA1H, (dev->dev_addr[5] << 8) | (dev->dev_addr[4]));
-
- at91_emac_write(lp, AT91_EMAC_SA2L, 0);
- at91_emac_write(lp, AT91_EMAC_SA2H, 0);
-}
-
-/*
- * Store the new hardware address in dev->dev_addr, and update the MAC.
- */
-static int set_mac_address(struct net_device *dev, void* addr)
-{
- struct sockaddr *address = addr;
-
- if (!is_valid_ether_addr(address->sa_data))
- return -EADDRNOTAVAIL;
-
- memcpy(dev->dev_addr, address->sa_data, dev->addr_len);
- update_mac_address(dev);
+#include "macb.h"
- printk("%s: Setting MAC address to %pM\n", dev->name,
- dev->dev_addr);
+/* 1518 rounded up */
+#define MAX_RBUFF_SZ 0x600
+/* max number of receive buffers */
+#define MAX_RX_DESCR 9
- return 0;
-}
-
-static int inline hash_bit_value(int bitnr, __u8 *addr)
-{
- if (addr[bitnr / 8] & (1 << (bitnr % 8)))
- return 1;
- return 0;
-}
-
-/*
- * The hash address register is 64 bits long and takes up two locations in the memory map.
- * The least significant bits are stored in EMAC_HSL and the most significant
- * bits in EMAC_HSH.
- *
- * The unicast hash enable and the multicast hash enable bits in the network configuration
- * register enable the reception of hash matched frames. The destination address is
- * reduced to a 6 bit index into the 64 bit hash register using the following hash function.
- * The hash function is an exclusive or of every sixth bit of the destination address.
- * hash_index[5] = da[5] ^ da[11] ^ da[17] ^ da[23] ^ da[29] ^ da[35] ^ da[41] ^ da[47]
- * hash_index[4] = da[4] ^ da[10] ^ da[16] ^ da[22] ^ da[28] ^ da[34] ^ da[40] ^ da[46]
- * hash_index[3] = da[3] ^ da[09] ^ da[15] ^ da[21] ^ da[27] ^ da[33] ^ da[39] ^ da[45]
- * hash_index[2] = da[2] ^ da[08] ^ da[14] ^ da[20] ^ da[26] ^ da[32] ^ da[38] ^ da[44]
- * hash_index[1] = da[1] ^ da[07] ^ da[13] ^ da[19] ^ da[25] ^ da[31] ^ da[37] ^ da[43]
- * hash_index[0] = da[0] ^ da[06] ^ da[12] ^ da[18] ^ da[24] ^ da[30] ^ da[36] ^ da[42]
- * da[0] represents the least significant bit of the first byte received, that is, the multicast/
- * unicast indicator, and da[47] represents the most significant bit of the last byte
- * received.
- * If the hash index points to a bit that is set in the hash register then the frame will be
- * matched according to whether the frame is multicast or unicast.
- * A multicast match will be signalled if the multicast hash enable bit is set, da[0] is 1 and
- * the hash index points to a bit set in the hash register.
- * A unicast match will be signalled if the unicast hash enable bit is set, da[0] is 0 and the
- * hash index points to a bit set in the hash register.
- * To receive all multicast frames, the hash register should be set with all ones and the
- * multicast hash enable bit should be set in the network configuration register.
- */
-
-/*
- * Return the hash index value for the specified address.
- */
-static int hash_get_index(__u8 *addr)
-{
- int i, j, bitval;
- int hash_index = 0;
-
- for (j = 0; j < 6; j++) {
- for (i = 0, bitval = 0; i < 8; i++)
- bitval ^= hash_bit_value(i*6 + j, addr);
-
- hash_index |= (bitval << j);
- }
-
- return hash_index;
-}
-
-/*
- * Add multicast addresses to the internal multicast-hash table.
- */
-static void at91ether_sethashtable(struct net_device *dev)
+/* Initialize and start the Receiver and Transmit subsystems */
+static int at91ether_start(struct net_device *dev)
{
- struct at91_private *lp = netdev_priv(dev);
- struct netdev_hw_addr *ha;
- unsigned long mc_filter[2];
- unsigned int bitnr;
-
- mc_filter[0] = mc_filter[1] = 0;
-
- netdev_for_each_mc_addr(ha, dev) {
- bitnr = hash_get_index(ha->addr);
- mc_filter[bitnr >> 5] |= 1 << (bitnr & 31);
- }
-
- at91_emac_write(lp, AT91_EMAC_HSL, mc_filter[0]);
- at91_emac_write(lp, AT91_EMAC_HSH, mc_filter[1]);
-}
+ struct macb *lp = netdev_priv(dev);
+ dma_addr_t addr;
+ u32 ctl;
+ int i;
-/*
- * Enable/Disable promiscuous and multicast modes.
- */
-static void at91ether_set_multicast_list(struct net_device *dev)
-{
- struct at91_private *lp = netdev_priv(dev);
- unsigned long cfg;
-
- cfg = at91_emac_read(lp, AT91_EMAC_CFG);
-
- if (dev->flags & IFF_PROMISC) /* Enable promiscuous mode */
- cfg |= AT91_EMAC_CAF;
- else if (dev->flags & (~IFF_PROMISC)) /* Disable promiscuous mode */
- cfg &= ~AT91_EMAC_CAF;
-
- if (dev->flags & IFF_ALLMULTI) { /* Enable all multicast mode */
- at91_emac_write(lp, AT91_EMAC_HSH, -1);
- at91_emac_write(lp, AT91_EMAC_HSL, -1);
- cfg |= AT91_EMAC_MTI;
- } else if (!netdev_mc_empty(dev)) { /* Enable specific multicasts */
- at91ether_sethashtable(dev);
- cfg |= AT91_EMAC_MTI;
- } else if (dev->flags & (~IFF_ALLMULTI)) { /* Disable all multicast mode */
- at91_emac_write(lp, AT91_EMAC_HSH, 0);
- at91_emac_write(lp, AT91_EMAC_HSL, 0);
- cfg &= ~AT91_EMAC_MTI;
+ lp->rx_ring = dma_alloc_coherent(&lp->pdev->dev,
+ MAX_RX_DESCR * sizeof(struct macb_dma_desc),
+ &lp->rx_ring_dma, GFP_KERNEL);
+ if (!lp->rx_ring) {
+ netdev_err(dev, "unable to alloc rx ring DMA buffer\n");
+ return -ENOMEM;
}
- at91_emac_write(lp, AT91_EMAC_CFG, cfg);
-}
-
-/* ......................... ETHTOOL SUPPORT ........................... */
-
-static int mdio_read(struct net_device *dev, int phy_id, int location)
-{
- struct at91_private *lp = netdev_priv(dev);
- unsigned int value;
-
- read_phy(lp, phy_id, location, &value);
- return value;
-}
-
-static void mdio_write(struct net_device *dev, int phy_id, int location, int value)
-{
- struct at91_private *lp = netdev_priv(dev);
-
- write_phy(lp, phy_id, location, value);
-}
-
-static int at91ether_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
-{
- struct at91_private *lp = netdev_priv(dev);
- int ret;
-
- spin_lock_irq(&lp->lock);
- enable_mdi(lp);
-
- ret = mii_ethtool_gset(&lp->mii, cmd);
-
- disable_mdi(lp);
- spin_unlock_irq(&lp->lock);
+ lp->rx_buffers = dma_alloc_coherent(&lp->pdev->dev,
+ MAX_RX_DESCR * MAX_RBUFF_SZ,
+ &lp->rx_buffers_dma, GFP_KERNEL);
+ if (!lp->rx_buffers) {
+ netdev_err(dev, "unable to alloc rx data DMA buffer\n");
- if (lp->phy_media == PORT_FIBRE) { /* override media type since mii.c doesn't know */
- cmd->supported = SUPPORTED_FIBRE;
- cmd->port = PORT_FIBRE;
+ dma_free_coherent(&lp->pdev->dev,
+ MAX_RX_DESCR * sizeof(struct macb_dma_desc),
+ lp->rx_ring, lp->rx_ring_dma);
+ lp->rx_ring = NULL;
+ return -ENOMEM;
}
- return ret;
-}
-
-static int at91ether_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
-{
- struct at91_private *lp = netdev_priv(dev);
- int ret;
-
- spin_lock_irq(&lp->lock);
- enable_mdi(lp);
-
- ret = mii_ethtool_sset(&lp->mii, cmd);
-
- disable_mdi(lp);
- spin_unlock_irq(&lp->lock);
-
- return ret;
-}
-
-static int at91ether_nwayreset(struct net_device *dev)
-{
- struct at91_private *lp = netdev_priv(dev);
- int ret;
-
- spin_lock_irq(&lp->lock);
- enable_mdi(lp);
-
- ret = mii_nway_restart(&lp->mii);
-
- disable_mdi(lp);
- spin_unlock_irq(&lp->lock);
-
- return ret;
-}
-
-static void at91ether_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
-{
- strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
- strlcpy(info->version, DRV_VERSION, sizeof(info->version));
- strlcpy(info->bus_info, dev_name(dev->dev.parent), sizeof(info->bus_info));
-}
-
-static const struct ethtool_ops at91ether_ethtool_ops = {
- .get_settings = at91ether_get_settings,
- .set_settings = at91ether_set_settings,
- .get_drvinfo = at91ether_get_drvinfo,
- .nway_reset = at91ether_nwayreset,
- .get_link = ethtool_op_get_link,
-};
-
-static int at91ether_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
-{
- struct at91_private *lp = netdev_priv(dev);
- int res;
-
- if (!netif_running(dev))
- return -EINVAL;
-
- spin_lock_irq(&lp->lock);
- enable_mdi(lp);
- res = generic_mii_ioctl(&lp->mii, if_mii(rq), cmd, NULL);
- disable_mdi(lp);
- spin_unlock_irq(&lp->lock);
-
- return res;
-}
-
-/* ................................ MAC ................................ */
-
-/*
- * Initialize and start the Receiver and Transmit subsystems
- */
-static void at91ether_start(struct net_device *dev)
-{
- struct at91_private *lp = netdev_priv(dev);
- struct recv_desc_bufs *dlist, *dlist_phys;
- int i;
- unsigned long ctl;
-
- dlist = lp->dlist;
- dlist_phys = lp->dlist_phys;
-
+ addr = lp->rx_buffers_dma;
for (i = 0; i < MAX_RX_DESCR; i++) {
- dlist->descriptors[i].addr = (unsigned int) &dlist_phys->recv_buf[i][0];
- dlist->descriptors[i].size = 0;
+ lp->rx_ring[i].addr = addr;
+ lp->rx_ring[i].ctrl = 0;
+ addr += MAX_RBUFF_SZ;
}
/* Set the Wrap bit on the last descriptor */
Content of type "application/pgp-signature" skipped
Powered by blists - more mailing lists