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1022 lines
25 KiB
1022 lines
25 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* drivers/net/ethernet/8390/ax88796.c |
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* |
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* Copyright 2005,2007 Simtec Electronics |
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* Ben Dooks <[email protected]> |
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* |
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* Asix AX88796 10/100 Ethernet controller support |
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* Based on ne.c, by Donald Becker, et-al. |
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*/ |
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#include <linux/module.h> |
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#include <linux/kernel.h> |
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#include <linux/errno.h> |
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#include <linux/isapnp.h> |
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#include <linux/interrupt.h> |
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#include <linux/io.h> |
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#include <linux/platform_device.h> |
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#include <linux/delay.h> |
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#include <linux/timer.h> |
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#include <linux/netdevice.h> |
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#include <linux/etherdevice.h> |
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#include <linux/ethtool.h> |
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#include <linux/mdio-bitbang.h> |
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#include <linux/phy.h> |
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#include <linux/eeprom_93cx6.h> |
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#include <linux/slab.h> |
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#include <net/ax88796.h> |
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/* Rename the lib8390.c functions to show that they are in this driver */ |
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#define __ei_open ax_ei_open |
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#define __ei_close ax_ei_close |
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#define __ei_poll ax_ei_poll |
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#define __ei_start_xmit ax_ei_start_xmit |
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#define __ei_tx_timeout ax_ei_tx_timeout |
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#define __ei_get_stats ax_ei_get_stats |
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#define __ei_set_multicast_list ax_ei_set_multicast_list |
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#define __ei_interrupt ax_ei_interrupt |
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#define ____alloc_ei_netdev ax__alloc_ei_netdev |
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#define __NS8390_init ax_NS8390_init |
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/* force unsigned long back to 'void __iomem *' */ |
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#define ax_convert_addr(_a) ((void __force __iomem *)(_a)) |
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#define ei_inb(_a) readb(ax_convert_addr(_a)) |
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#define ei_outb(_v, _a) writeb(_v, ax_convert_addr(_a)) |
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#define ei_inb_p(_a) ei_inb(_a) |
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#define ei_outb_p(_v, _a) ei_outb(_v, _a) |
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/* define EI_SHIFT() to take into account our register offsets */ |
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#define EI_SHIFT(x) (ei_local->reg_offset[(x)]) |
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/* Ensure we have our RCR base value */ |
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#define AX88796_PLATFORM |
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static unsigned char version[] = "ax88796.c: Copyright 2005,2007 Simtec Electronics\n"; |
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#include "lib8390.c" |
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#define DRV_NAME "ax88796" |
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#define DRV_VERSION "1.00" |
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/* from ne.c */ |
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#define NE_CMD EI_SHIFT(0x00) |
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#define NE_RESET EI_SHIFT(0x1f) |
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#define NE_DATAPORT EI_SHIFT(0x10) |
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#define NE1SM_START_PG 0x20 /* First page of TX buffer */ |
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#define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */ |
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#define NESM_START_PG 0x40 /* First page of TX buffer */ |
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#define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */ |
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#define AX_GPOC_PPDSET BIT(6) |
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/* device private data */ |
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struct ax_device { |
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struct mii_bus *mii_bus; |
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struct mdiobb_ctrl bb_ctrl; |
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void __iomem *addr_memr; |
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u8 reg_memr; |
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int link; |
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int speed; |
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int duplex; |
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void __iomem *map2; |
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const struct ax_plat_data *plat; |
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unsigned char running; |
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unsigned char resume_open; |
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unsigned int irqflags; |
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u32 reg_offsets[0x20]; |
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}; |
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static inline struct ax_device *to_ax_dev(struct net_device *dev) |
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{ |
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struct ei_device *ei_local = netdev_priv(dev); |
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return (struct ax_device *)(ei_local + 1); |
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} |
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void ax_NS8390_reinit(struct net_device *dev) |
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{ |
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ax_NS8390_init(dev, 1); |
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} |
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EXPORT_SYMBOL_GPL(ax_NS8390_reinit); |
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/* |
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* ax_initial_check |
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* |
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* do an initial probe for the card to check whether it exists |
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* and is functional |
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*/ |
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static int ax_initial_check(struct net_device *dev) |
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{ |
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struct ei_device *ei_local = netdev_priv(dev); |
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void __iomem *ioaddr = ei_local->mem; |
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int reg0; |
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int regd; |
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reg0 = ei_inb(ioaddr); |
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if (reg0 == 0xFF) |
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return -ENODEV; |
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ei_outb(E8390_NODMA + E8390_PAGE1 + E8390_STOP, ioaddr + E8390_CMD); |
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regd = ei_inb(ioaddr + 0x0d); |
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ei_outb(0xff, ioaddr + 0x0d); |
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ei_outb(E8390_NODMA + E8390_PAGE0, ioaddr + E8390_CMD); |
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ei_inb(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */ |
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if (ei_inb(ioaddr + EN0_COUNTER0) != 0) { |
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ei_outb(reg0, ioaddr); |
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ei_outb(regd, ioaddr + 0x0d); /* Restore the old values. */ |
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return -ENODEV; |
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} |
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return 0; |
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} |
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/* |
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* Hard reset the card. This used to pause for the same period that a |
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* 8390 reset command required, but that shouldn't be necessary. |
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*/ |
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static void ax_reset_8390(struct net_device *dev) |
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{ |
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struct ei_device *ei_local = netdev_priv(dev); |
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unsigned long reset_start_time = jiffies; |
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void __iomem *addr = (void __iomem *)dev->base_addr; |
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netif_dbg(ei_local, hw, dev, "resetting the 8390 t=%ld...\n", jiffies); |
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ei_outb(ei_inb(addr + NE_RESET), addr + NE_RESET); |
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ei_local->txing = 0; |
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ei_local->dmaing = 0; |
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/* This check _should_not_ be necessary, omit eventually. */ |
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while ((ei_inb(addr + EN0_ISR) & ENISR_RESET) == 0) { |
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if (time_after(jiffies, reset_start_time + 2 * HZ / 100)) { |
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netdev_warn(dev, "%s: did not complete.\n", __func__); |
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break; |
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} |
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} |
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ei_outb(ENISR_RESET, addr + EN0_ISR); /* Ack intr. */ |
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} |
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/* Wrapper for __ei_interrupt for platforms that have a platform-specific |
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* way to find out whether the interrupt request might be caused by |
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* the ax88796 chip. |
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*/ |
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static irqreturn_t ax_ei_interrupt_filtered(int irq, void *dev_id) |
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{ |
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struct net_device *dev = dev_id; |
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struct ax_device *ax = to_ax_dev(dev); |
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struct platform_device *pdev = to_platform_device(dev->dev.parent); |
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if (!ax->plat->check_irq(pdev)) |
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return IRQ_NONE; |
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return ax_ei_interrupt(irq, dev_id); |
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} |
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static void ax_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, |
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int ring_page) |
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{ |
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struct ei_device *ei_local = netdev_priv(dev); |
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void __iomem *nic_base = ei_local->mem; |
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/* This *shouldn't* happen. If it does, it's the last thing you'll see */ |
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if (ei_local->dmaing) { |
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netdev_err(dev, "DMAing conflict in %s " |
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"[DMAstat:%d][irqlock:%d].\n", |
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__func__, |
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ei_local->dmaing, ei_local->irqlock); |
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return; |
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} |
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ei_local->dmaing |= 0x01; |
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ei_outb(E8390_NODMA + E8390_PAGE0 + E8390_START, nic_base + NE_CMD); |
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ei_outb(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO); |
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ei_outb(0, nic_base + EN0_RCNTHI); |
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ei_outb(0, nic_base + EN0_RSARLO); /* On page boundary */ |
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ei_outb(ring_page, nic_base + EN0_RSARHI); |
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ei_outb(E8390_RREAD+E8390_START, nic_base + NE_CMD); |
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if (ei_local->word16) |
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ioread16_rep(nic_base + NE_DATAPORT, hdr, |
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sizeof(struct e8390_pkt_hdr) >> 1); |
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else |
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ioread8_rep(nic_base + NE_DATAPORT, hdr, |
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sizeof(struct e8390_pkt_hdr)); |
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ei_outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ |
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ei_local->dmaing &= ~0x01; |
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le16_to_cpus(&hdr->count); |
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} |
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/* |
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* Block input and output, similar to the Crynwr packet driver. If |
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* you are porting to a new ethercard, look at the packet driver |
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* source for hints. The NEx000 doesn't share the on-board packet |
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* memory -- you have to put the packet out through the "remote DMA" |
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* dataport using ei_outb. |
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*/ |
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static void ax_block_input(struct net_device *dev, int count, |
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struct sk_buff *skb, int ring_offset) |
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{ |
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struct ei_device *ei_local = netdev_priv(dev); |
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void __iomem *nic_base = ei_local->mem; |
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char *buf = skb->data; |
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if (ei_local->dmaing) { |
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netdev_err(dev, |
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"DMAing conflict in %s " |
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"[DMAstat:%d][irqlock:%d].\n", |
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__func__, |
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ei_local->dmaing, ei_local->irqlock); |
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return; |
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} |
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ei_local->dmaing |= 0x01; |
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ei_outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base + NE_CMD); |
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ei_outb(count & 0xff, nic_base + EN0_RCNTLO); |
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ei_outb(count >> 8, nic_base + EN0_RCNTHI); |
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ei_outb(ring_offset & 0xff, nic_base + EN0_RSARLO); |
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ei_outb(ring_offset >> 8, nic_base + EN0_RSARHI); |
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ei_outb(E8390_RREAD+E8390_START, nic_base + NE_CMD); |
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if (ei_local->word16) { |
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ioread16_rep(nic_base + NE_DATAPORT, buf, count >> 1); |
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if (count & 0x01) |
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buf[count-1] = ei_inb(nic_base + NE_DATAPORT); |
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} else { |
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ioread8_rep(nic_base + NE_DATAPORT, buf, count); |
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} |
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ei_local->dmaing &= ~1; |
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} |
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static void ax_block_output(struct net_device *dev, int count, |
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const unsigned char *buf, const int start_page) |
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{ |
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struct ei_device *ei_local = netdev_priv(dev); |
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void __iomem *nic_base = ei_local->mem; |
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unsigned long dma_start; |
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/* |
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* Round the count up for word writes. Do we need to do this? |
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* What effect will an odd byte count have on the 8390? I |
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* should check someday. |
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*/ |
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if (ei_local->word16 && (count & 0x01)) |
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count++; |
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/* This *shouldn't* happen. If it does, it's the last thing you'll see */ |
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if (ei_local->dmaing) { |
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netdev_err(dev, "DMAing conflict in %s." |
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"[DMAstat:%d][irqlock:%d]\n", |
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__func__, |
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ei_local->dmaing, ei_local->irqlock); |
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return; |
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} |
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ei_local->dmaing |= 0x01; |
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/* We should already be in page 0, but to be safe... */ |
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ei_outb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD); |
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ei_outb(ENISR_RDC, nic_base + EN0_ISR); |
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/* Now the normal output. */ |
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ei_outb(count & 0xff, nic_base + EN0_RCNTLO); |
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ei_outb(count >> 8, nic_base + EN0_RCNTHI); |
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ei_outb(0x00, nic_base + EN0_RSARLO); |
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ei_outb(start_page, nic_base + EN0_RSARHI); |
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ei_outb(E8390_RWRITE+E8390_START, nic_base + NE_CMD); |
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if (ei_local->word16) |
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iowrite16_rep(nic_base + NE_DATAPORT, buf, count >> 1); |
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else |
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iowrite8_rep(nic_base + NE_DATAPORT, buf, count); |
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dma_start = jiffies; |
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while ((ei_inb(nic_base + EN0_ISR) & ENISR_RDC) == 0) { |
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if (time_after(jiffies, dma_start + 2 * HZ / 100)) { /* 20ms */ |
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netdev_warn(dev, "timeout waiting for Tx RDC.\n"); |
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ax_reset_8390(dev); |
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ax_NS8390_init(dev, 1); |
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break; |
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} |
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} |
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ei_outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ |
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ei_local->dmaing &= ~0x01; |
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} |
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/* definitions for accessing MII/EEPROM interface */ |
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#define AX_MEMR EI_SHIFT(0x14) |
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#define AX_MEMR_MDC BIT(0) |
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#define AX_MEMR_MDIR BIT(1) |
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#define AX_MEMR_MDI BIT(2) |
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#define AX_MEMR_MDO BIT(3) |
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#define AX_MEMR_EECS BIT(4) |
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#define AX_MEMR_EEI BIT(5) |
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#define AX_MEMR_EEO BIT(6) |
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#define AX_MEMR_EECLK BIT(7) |
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static void ax_handle_link_change(struct net_device *dev) |
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{ |
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struct ax_device *ax = to_ax_dev(dev); |
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struct phy_device *phy_dev = dev->phydev; |
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int status_change = 0; |
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if (phy_dev->link && ((ax->speed != phy_dev->speed) || |
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(ax->duplex != phy_dev->duplex))) { |
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ax->speed = phy_dev->speed; |
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ax->duplex = phy_dev->duplex; |
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status_change = 1; |
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} |
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if (phy_dev->link != ax->link) { |
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if (!phy_dev->link) { |
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ax->speed = 0; |
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ax->duplex = -1; |
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} |
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ax->link = phy_dev->link; |
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status_change = 1; |
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} |
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if (status_change) |
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phy_print_status(phy_dev); |
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} |
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static int ax_mii_probe(struct net_device *dev) |
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{ |
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struct ax_device *ax = to_ax_dev(dev); |
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struct phy_device *phy_dev = NULL; |
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int ret; |
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|
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/* find the first phy */ |
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phy_dev = phy_find_first(ax->mii_bus); |
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if (!phy_dev) { |
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netdev_err(dev, "no PHY found\n"); |
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return -ENODEV; |
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} |
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ret = phy_connect_direct(dev, phy_dev, ax_handle_link_change, |
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PHY_INTERFACE_MODE_MII); |
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if (ret) { |
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netdev_err(dev, "Could not attach to PHY\n"); |
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return ret; |
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} |
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phy_set_max_speed(phy_dev, SPEED_100); |
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netdev_info(dev, "PHY driver [%s] (mii_bus:phy_addr=%s, irq=%d)\n", |
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phy_dev->drv->name, phydev_name(phy_dev), phy_dev->irq); |
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|
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return 0; |
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} |
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static void ax_phy_switch(struct net_device *dev, int on) |
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{ |
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struct ei_device *ei_local = netdev_priv(dev); |
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struct ax_device *ax = to_ax_dev(dev); |
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|
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u8 reg_gpoc = ax->plat->gpoc_val; |
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|
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if (!!on) |
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reg_gpoc &= ~AX_GPOC_PPDSET; |
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else |
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reg_gpoc |= AX_GPOC_PPDSET; |
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|
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ei_outb(reg_gpoc, ei_local->mem + EI_SHIFT(0x17)); |
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} |
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|
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static void ax_bb_mdc(struct mdiobb_ctrl *ctrl, int level) |
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{ |
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struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl); |
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|
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if (level) |
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ax->reg_memr |= AX_MEMR_MDC; |
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else |
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ax->reg_memr &= ~AX_MEMR_MDC; |
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|
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ei_outb(ax->reg_memr, ax->addr_memr); |
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} |
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|
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static void ax_bb_dir(struct mdiobb_ctrl *ctrl, int output) |
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{ |
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struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl); |
|
|
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if (output) |
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ax->reg_memr &= ~AX_MEMR_MDIR; |
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else |
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ax->reg_memr |= AX_MEMR_MDIR; |
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|
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ei_outb(ax->reg_memr, ax->addr_memr); |
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} |
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|
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static void ax_bb_set_data(struct mdiobb_ctrl *ctrl, int value) |
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{ |
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struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl); |
|
|
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if (value) |
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ax->reg_memr |= AX_MEMR_MDO; |
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else |
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ax->reg_memr &= ~AX_MEMR_MDO; |
|
|
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ei_outb(ax->reg_memr, ax->addr_memr); |
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} |
|
|
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static int ax_bb_get_data(struct mdiobb_ctrl *ctrl) |
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{ |
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struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl); |
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int reg_memr = ei_inb(ax->addr_memr); |
|
|
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return reg_memr & AX_MEMR_MDI ? 1 : 0; |
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} |
|
|
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static const struct mdiobb_ops bb_ops = { |
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.owner = THIS_MODULE, |
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.set_mdc = ax_bb_mdc, |
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.set_mdio_dir = ax_bb_dir, |
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.set_mdio_data = ax_bb_set_data, |
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.get_mdio_data = ax_bb_get_data, |
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}; |
|
|
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static int ax_mii_init(struct net_device *dev) |
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{ |
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struct platform_device *pdev = to_platform_device(dev->dev.parent); |
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struct ei_device *ei_local = netdev_priv(dev); |
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struct ax_device *ax = to_ax_dev(dev); |
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int err; |
|
|
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ax->bb_ctrl.ops = &bb_ops; |
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ax->addr_memr = ei_local->mem + AX_MEMR; |
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ax->mii_bus = alloc_mdio_bitbang(&ax->bb_ctrl); |
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if (!ax->mii_bus) { |
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err = -ENOMEM; |
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goto out; |
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} |
|
|
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ax->mii_bus->name = "ax88796_mii_bus"; |
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ax->mii_bus->parent = dev->dev.parent; |
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snprintf(ax->mii_bus->id, MII_BUS_ID_SIZE, "%s-%x", |
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pdev->name, pdev->id); |
|
|
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err = mdiobus_register(ax->mii_bus); |
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if (err) |
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goto out_free_mdio_bitbang; |
|
|
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return 0; |
|
|
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out_free_mdio_bitbang: |
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free_mdio_bitbang(ax->mii_bus); |
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out: |
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return err; |
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} |
|
|
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static int ax_open(struct net_device *dev) |
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{ |
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struct ax_device *ax = to_ax_dev(dev); |
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int ret; |
|
|
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netdev_dbg(dev, "open\n"); |
|
|
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ret = ax_mii_init(dev); |
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if (ret) |
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goto failed_mii; |
|
|
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if (ax->plat->check_irq) |
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ret = request_irq(dev->irq, ax_ei_interrupt_filtered, |
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ax->irqflags, dev->name, dev); |
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else |
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ret = request_irq(dev->irq, ax_ei_interrupt, ax->irqflags, |
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dev->name, dev); |
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if (ret) |
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goto failed_request_irq; |
|
|
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/* turn the phy on (if turned off) */ |
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ax_phy_switch(dev, 1); |
|
|
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ret = ax_mii_probe(dev); |
|
if (ret) |
|
goto failed_mii_probe; |
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phy_start(dev->phydev); |
|
|
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ret = ax_ei_open(dev); |
|
if (ret) |
|
goto failed_ax_ei_open; |
|
|
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ax->running = 1; |
|
|
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return 0; |
|
|
|
failed_ax_ei_open: |
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phy_disconnect(dev->phydev); |
|
failed_mii_probe: |
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ax_phy_switch(dev, 0); |
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free_irq(dev->irq, dev); |
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failed_request_irq: |
|
/* unregister mdiobus */ |
|
mdiobus_unregister(ax->mii_bus); |
|
free_mdio_bitbang(ax->mii_bus); |
|
failed_mii: |
|
return ret; |
|
} |
|
|
|
static int ax_close(struct net_device *dev) |
|
{ |
|
struct ax_device *ax = to_ax_dev(dev); |
|
|
|
netdev_dbg(dev, "close\n"); |
|
|
|
ax->running = 0; |
|
wmb(); |
|
|
|
ax_ei_close(dev); |
|
|
|
/* turn the phy off */ |
|
ax_phy_switch(dev, 0); |
|
phy_disconnect(dev->phydev); |
|
|
|
free_irq(dev->irq, dev); |
|
|
|
mdiobus_unregister(ax->mii_bus); |
|
free_mdio_bitbang(ax->mii_bus); |
|
return 0; |
|
} |
|
|
|
static int ax_ioctl(struct net_device *dev, struct ifreq *req, int cmd) |
|
{ |
|
struct phy_device *phy_dev = dev->phydev; |
|
|
|
if (!netif_running(dev)) |
|
return -EINVAL; |
|
|
|
if (!phy_dev) |
|
return -ENODEV; |
|
|
|
return phy_mii_ioctl(phy_dev, req, cmd); |
|
} |
|
|
|
/* ethtool ops */ |
|
|
|
static void ax_get_drvinfo(struct net_device *dev, |
|
struct ethtool_drvinfo *info) |
|
{ |
|
struct platform_device *pdev = to_platform_device(dev->dev.parent); |
|
|
|
strlcpy(info->driver, DRV_NAME, sizeof(info->driver)); |
|
strlcpy(info->version, DRV_VERSION, sizeof(info->version)); |
|
strlcpy(info->bus_info, pdev->name, sizeof(info->bus_info)); |
|
} |
|
|
|
static u32 ax_get_msglevel(struct net_device *dev) |
|
{ |
|
struct ei_device *ei_local = netdev_priv(dev); |
|
|
|
return ei_local->msg_enable; |
|
} |
|
|
|
static void ax_set_msglevel(struct net_device *dev, u32 v) |
|
{ |
|
struct ei_device *ei_local = netdev_priv(dev); |
|
|
|
ei_local->msg_enable = v; |
|
} |
|
|
|
static const struct ethtool_ops ax_ethtool_ops = { |
|
.get_drvinfo = ax_get_drvinfo, |
|
.get_link = ethtool_op_get_link, |
|
.get_ts_info = ethtool_op_get_ts_info, |
|
.get_msglevel = ax_get_msglevel, |
|
.set_msglevel = ax_set_msglevel, |
|
.get_link_ksettings = phy_ethtool_get_link_ksettings, |
|
.set_link_ksettings = phy_ethtool_set_link_ksettings, |
|
}; |
|
|
|
#ifdef CONFIG_AX88796_93CX6 |
|
static void ax_eeprom_register_read(struct eeprom_93cx6 *eeprom) |
|
{ |
|
struct ei_device *ei_local = eeprom->data; |
|
u8 reg = ei_inb(ei_local->mem + AX_MEMR); |
|
|
|
eeprom->reg_data_in = reg & AX_MEMR_EEI; |
|
eeprom->reg_data_out = reg & AX_MEMR_EEO; /* Input pin */ |
|
eeprom->reg_data_clock = reg & AX_MEMR_EECLK; |
|
eeprom->reg_chip_select = reg & AX_MEMR_EECS; |
|
} |
|
|
|
static void ax_eeprom_register_write(struct eeprom_93cx6 *eeprom) |
|
{ |
|
struct ei_device *ei_local = eeprom->data; |
|
u8 reg = ei_inb(ei_local->mem + AX_MEMR); |
|
|
|
reg &= ~(AX_MEMR_EEI | AX_MEMR_EECLK | AX_MEMR_EECS); |
|
|
|
if (eeprom->reg_data_in) |
|
reg |= AX_MEMR_EEI; |
|
if (eeprom->reg_data_clock) |
|
reg |= AX_MEMR_EECLK; |
|
if (eeprom->reg_chip_select) |
|
reg |= AX_MEMR_EECS; |
|
|
|
ei_outb(reg, ei_local->mem + AX_MEMR); |
|
udelay(10); |
|
} |
|
#endif |
|
|
|
static const struct net_device_ops ax_netdev_ops = { |
|
.ndo_open = ax_open, |
|
.ndo_stop = ax_close, |
|
.ndo_eth_ioctl = ax_ioctl, |
|
|
|
.ndo_start_xmit = ax_ei_start_xmit, |
|
.ndo_tx_timeout = ax_ei_tx_timeout, |
|
.ndo_get_stats = ax_ei_get_stats, |
|
.ndo_set_rx_mode = ax_ei_set_multicast_list, |
|
.ndo_validate_addr = eth_validate_addr, |
|
.ndo_set_mac_address = eth_mac_addr, |
|
#ifdef CONFIG_NET_POLL_CONTROLLER |
|
.ndo_poll_controller = ax_ei_poll, |
|
#endif |
|
}; |
|
|
|
/* setup code */ |
|
|
|
static void ax_initial_setup(struct net_device *dev, struct ei_device *ei_local) |
|
{ |
|
void __iomem *ioaddr = ei_local->mem; |
|
struct ax_device *ax = to_ax_dev(dev); |
|
|
|
/* Select page 0 */ |
|
ei_outb(E8390_NODMA + E8390_PAGE0 + E8390_STOP, ioaddr + E8390_CMD); |
|
|
|
/* set to byte access */ |
|
ei_outb(ax->plat->dcr_val & ~1, ioaddr + EN0_DCFG); |
|
ei_outb(ax->plat->gpoc_val, ioaddr + EI_SHIFT(0x17)); |
|
} |
|
|
|
/* |
|
* ax_init_dev |
|
* |
|
* initialise the specified device, taking care to note the MAC |
|
* address it may already have (if configured), ensure |
|
* the device is ready to be used by lib8390.c and registerd with |
|
* the network layer. |
|
*/ |
|
static int ax_init_dev(struct net_device *dev) |
|
{ |
|
struct ei_device *ei_local = netdev_priv(dev); |
|
struct ax_device *ax = to_ax_dev(dev); |
|
void __iomem *ioaddr = ei_local->mem; |
|
unsigned int start_page; |
|
unsigned int stop_page; |
|
int ret; |
|
int i; |
|
|
|
ret = ax_initial_check(dev); |
|
if (ret) |
|
goto err_out; |
|
|
|
/* setup goes here */ |
|
|
|
ax_initial_setup(dev, ei_local); |
|
|
|
/* read the mac from the card prom if we need it */ |
|
|
|
if (ax->plat->flags & AXFLG_HAS_EEPROM) { |
|
unsigned char SA_prom[32]; |
|
|
|
ei_outb(6, ioaddr + EN0_RCNTLO); |
|
ei_outb(0, ioaddr + EN0_RCNTHI); |
|
ei_outb(0, ioaddr + EN0_RSARLO); |
|
ei_outb(0, ioaddr + EN0_RSARHI); |
|
ei_outb(E8390_RREAD + E8390_START, ioaddr + NE_CMD); |
|
for (i = 0; i < sizeof(SA_prom); i += 2) { |
|
SA_prom[i] = ei_inb(ioaddr + NE_DATAPORT); |
|
SA_prom[i + 1] = ei_inb(ioaddr + NE_DATAPORT); |
|
} |
|
ei_outb(ENISR_RDC, ioaddr + EN0_ISR); /* Ack intr. */ |
|
|
|
if (ax->plat->wordlength == 2) |
|
for (i = 0; i < 16; i++) |
|
SA_prom[i] = SA_prom[i+i]; |
|
|
|
memcpy(dev->dev_addr, SA_prom, ETH_ALEN); |
|
} |
|
|
|
#ifdef CONFIG_AX88796_93CX6 |
|
if (ax->plat->flags & AXFLG_HAS_93CX6) { |
|
unsigned char mac_addr[ETH_ALEN]; |
|
struct eeprom_93cx6 eeprom; |
|
|
|
eeprom.data = ei_local; |
|
eeprom.register_read = ax_eeprom_register_read; |
|
eeprom.register_write = ax_eeprom_register_write; |
|
eeprom.width = PCI_EEPROM_WIDTH_93C56; |
|
|
|
eeprom_93cx6_multiread(&eeprom, 0, |
|
(__le16 __force *)mac_addr, |
|
sizeof(mac_addr) >> 1); |
|
|
|
memcpy(dev->dev_addr, mac_addr, ETH_ALEN); |
|
} |
|
#endif |
|
if (ax->plat->wordlength == 2) { |
|
/* We must set the 8390 for word mode. */ |
|
ei_outb(ax->plat->dcr_val, ei_local->mem + EN0_DCFG); |
|
start_page = NESM_START_PG; |
|
stop_page = NESM_STOP_PG; |
|
} else { |
|
start_page = NE1SM_START_PG; |
|
stop_page = NE1SM_STOP_PG; |
|
} |
|
|
|
/* load the mac-address from the device */ |
|
if (ax->plat->flags & AXFLG_MAC_FROMDEV) { |
|
ei_outb(E8390_NODMA + E8390_PAGE1 + E8390_STOP, |
|
ei_local->mem + E8390_CMD); /* 0x61 */ |
|
for (i = 0; i < ETH_ALEN; i++) |
|
dev->dev_addr[i] = |
|
ei_inb(ioaddr + EN1_PHYS_SHIFT(i)); |
|
} |
|
|
|
if ((ax->plat->flags & AXFLG_MAC_FROMPLATFORM) && |
|
ax->plat->mac_addr) |
|
memcpy(dev->dev_addr, ax->plat->mac_addr, ETH_ALEN); |
|
|
|
if (!is_valid_ether_addr(dev->dev_addr)) { |
|
eth_hw_addr_random(dev); |
|
dev_info(&dev->dev, "Using random MAC address: %pM\n", |
|
dev->dev_addr); |
|
} |
|
|
|
ax_reset_8390(dev); |
|
|
|
ei_local->name = "AX88796"; |
|
ei_local->tx_start_page = start_page; |
|
ei_local->stop_page = stop_page; |
|
ei_local->word16 = (ax->plat->wordlength == 2); |
|
ei_local->rx_start_page = start_page + TX_PAGES; |
|
|
|
#ifdef PACKETBUF_MEMSIZE |
|
/* Allow the packet buffer size to be overridden by know-it-alls. */ |
|
ei_local->stop_page = ei_local->tx_start_page + PACKETBUF_MEMSIZE; |
|
#endif |
|
|
|
ei_local->reset_8390 = &ax_reset_8390; |
|
if (ax->plat->block_input) |
|
ei_local->block_input = ax->plat->block_input; |
|
else |
|
ei_local->block_input = &ax_block_input; |
|
if (ax->plat->block_output) |
|
ei_local->block_output = ax->plat->block_output; |
|
else |
|
ei_local->block_output = &ax_block_output; |
|
ei_local->get_8390_hdr = &ax_get_8390_hdr; |
|
ei_local->priv = 0; |
|
|
|
dev->netdev_ops = &ax_netdev_ops; |
|
dev->ethtool_ops = &ax_ethtool_ops; |
|
|
|
ax_NS8390_init(dev, 0); |
|
|
|
ret = register_netdev(dev); |
|
if (ret) |
|
goto err_out; |
|
|
|
netdev_info(dev, "%dbit, irq %d, %lx, MAC: %pM\n", |
|
ei_local->word16 ? 16 : 8, dev->irq, dev->base_addr, |
|
dev->dev_addr); |
|
|
|
return 0; |
|
|
|
err_out: |
|
return ret; |
|
} |
|
|
|
static int ax_remove(struct platform_device *pdev) |
|
{ |
|
struct net_device *dev = platform_get_drvdata(pdev); |
|
struct ei_device *ei_local = netdev_priv(dev); |
|
struct ax_device *ax = to_ax_dev(dev); |
|
struct resource *mem; |
|
|
|
unregister_netdev(dev); |
|
|
|
iounmap(ei_local->mem); |
|
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
|
release_mem_region(mem->start, resource_size(mem)); |
|
|
|
if (ax->map2) { |
|
iounmap(ax->map2); |
|
mem = platform_get_resource(pdev, IORESOURCE_MEM, 1); |
|
release_mem_region(mem->start, resource_size(mem)); |
|
} |
|
|
|
platform_set_drvdata(pdev, NULL); |
|
free_netdev(dev); |
|
|
|
return 0; |
|
} |
|
|
|
/* |
|
* ax_probe |
|
* |
|
* This is the entry point when the platform device system uses to |
|
* notify us of a new device to attach to. Allocate memory, find the |
|
* resources and information passed, and map the necessary registers. |
|
*/ |
|
static int ax_probe(struct platform_device *pdev) |
|
{ |
|
struct net_device *dev; |
|
struct ei_device *ei_local; |
|
struct ax_device *ax; |
|
struct resource *irq, *mem, *mem2; |
|
unsigned long mem_size, mem2_size = 0; |
|
int ret = 0; |
|
|
|
dev = ax__alloc_ei_netdev(sizeof(struct ax_device)); |
|
if (dev == NULL) |
|
return -ENOMEM; |
|
|
|
/* ok, let's setup our device */ |
|
SET_NETDEV_DEV(dev, &pdev->dev); |
|
ei_local = netdev_priv(dev); |
|
ax = to_ax_dev(dev); |
|
|
|
ax->plat = dev_get_platdata(&pdev->dev); |
|
platform_set_drvdata(pdev, dev); |
|
|
|
ei_local->rxcr_base = ax->plat->rcr_val; |
|
|
|
/* find the platform resources */ |
|
irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0); |
|
if (!irq) { |
|
dev_err(&pdev->dev, "no IRQ specified\n"); |
|
ret = -ENXIO; |
|
goto exit_mem; |
|
} |
|
|
|
dev->irq = irq->start; |
|
ax->irqflags = irq->flags & IRQF_TRIGGER_MASK; |
|
|
|
if (irq->flags & IORESOURCE_IRQ_SHAREABLE) |
|
ax->irqflags |= IRQF_SHARED; |
|
|
|
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
|
if (!mem) { |
|
dev_err(&pdev->dev, "no MEM specified\n"); |
|
ret = -ENXIO; |
|
goto exit_mem; |
|
} |
|
|
|
mem_size = resource_size(mem); |
|
|
|
/* |
|
* setup the register offsets from either the platform data or |
|
* by using the size of the resource provided |
|
*/ |
|
if (ax->plat->reg_offsets) |
|
ei_local->reg_offset = ax->plat->reg_offsets; |
|
else { |
|
ei_local->reg_offset = ax->reg_offsets; |
|
for (ret = 0; ret < 0x18; ret++) |
|
ax->reg_offsets[ret] = (mem_size / 0x18) * ret; |
|
} |
|
|
|
if (!request_mem_region(mem->start, mem_size, pdev->name)) { |
|
dev_err(&pdev->dev, "cannot reserve registers\n"); |
|
ret = -ENXIO; |
|
goto exit_mem; |
|
} |
|
|
|
ei_local->mem = ioremap(mem->start, mem_size); |
|
dev->base_addr = (unsigned long)ei_local->mem; |
|
|
|
if (ei_local->mem == NULL) { |
|
dev_err(&pdev->dev, "Cannot ioremap area %pR\n", mem); |
|
|
|
ret = -ENXIO; |
|
goto exit_req; |
|
} |
|
|
|
/* look for reset area */ |
|
mem2 = platform_get_resource(pdev, IORESOURCE_MEM, 1); |
|
if (!mem2) { |
|
if (!ax->plat->reg_offsets) { |
|
for (ret = 0; ret < 0x20; ret++) |
|
ax->reg_offsets[ret] = (mem_size / 0x20) * ret; |
|
} |
|
} else { |
|
mem2_size = resource_size(mem2); |
|
|
|
if (!request_mem_region(mem2->start, mem2_size, pdev->name)) { |
|
dev_err(&pdev->dev, "cannot reserve registers\n"); |
|
ret = -ENXIO; |
|
goto exit_mem1; |
|
} |
|
|
|
ax->map2 = ioremap(mem2->start, mem2_size); |
|
if (!ax->map2) { |
|
dev_err(&pdev->dev, "cannot map reset register\n"); |
|
ret = -ENXIO; |
|
goto exit_mem2; |
|
} |
|
|
|
ei_local->reg_offset[0x1f] = ax->map2 - ei_local->mem; |
|
} |
|
|
|
/* got resources, now initialise and register device */ |
|
ret = ax_init_dev(dev); |
|
if (!ret) |
|
return 0; |
|
|
|
if (!ax->map2) |
|
goto exit_mem1; |
|
|
|
iounmap(ax->map2); |
|
|
|
exit_mem2: |
|
if (mem2) |
|
release_mem_region(mem2->start, mem2_size); |
|
|
|
exit_mem1: |
|
iounmap(ei_local->mem); |
|
|
|
exit_req: |
|
release_mem_region(mem->start, mem_size); |
|
|
|
exit_mem: |
|
platform_set_drvdata(pdev, NULL); |
|
free_netdev(dev); |
|
|
|
return ret; |
|
} |
|
|
|
/* suspend and resume */ |
|
|
|
#ifdef CONFIG_PM |
|
static int ax_suspend(struct platform_device *dev, pm_message_t state) |
|
{ |
|
struct net_device *ndev = platform_get_drvdata(dev); |
|
struct ax_device *ax = to_ax_dev(ndev); |
|
|
|
ax->resume_open = ax->running; |
|
|
|
netif_device_detach(ndev); |
|
ax_close(ndev); |
|
|
|
return 0; |
|
} |
|
|
|
static int ax_resume(struct platform_device *pdev) |
|
{ |
|
struct net_device *ndev = platform_get_drvdata(pdev); |
|
struct ax_device *ax = to_ax_dev(ndev); |
|
|
|
ax_initial_setup(ndev, netdev_priv(ndev)); |
|
ax_NS8390_init(ndev, ax->resume_open); |
|
netif_device_attach(ndev); |
|
|
|
if (ax->resume_open) |
|
ax_open(ndev); |
|
|
|
return 0; |
|
} |
|
|
|
#else |
|
#define ax_suspend NULL |
|
#define ax_resume NULL |
|
#endif |
|
|
|
static struct platform_driver axdrv = { |
|
.driver = { |
|
.name = "ax88796", |
|
}, |
|
.probe = ax_probe, |
|
.remove = ax_remove, |
|
.suspend = ax_suspend, |
|
.resume = ax_resume, |
|
}; |
|
|
|
module_platform_driver(axdrv); |
|
|
|
MODULE_DESCRIPTION("AX88796 10/100 Ethernet platform driver"); |
|
MODULE_AUTHOR("Ben Dooks, <[email protected]>"); |
|
MODULE_LICENSE("GPL v2"); |
|
MODULE_ALIAS("platform:ax88796");
|
|
|