--- /dev/null
+/* ne.c: A general non-shared-memory NS8390 ethernet driver for linux. */
+/*
+ Written 1992-94 by Donald Becker.
+
+ Copyright 1993 United States Government as represented by the
+ Director, National Security Agency.
+
+ This software may be used and distributed according to the terms
+ of the GNU General Public License, incorporated herein by reference.
+
+ The author may be reached as becker@scyld.com, or C/O
+ Scyld Computing Corporation, 410 Severn Ave., Suite 210, Annapolis MD 21403
+
+ This driver should work with many programmed-I/O 8390-based ethernet
+ boards. Currently it supports the NE1000, NE2000, many clones,
+ and some Cabletron products.
+
+ Changelog:
+
+ Paul Gortmaker : use ENISR_RDC to monitor Tx PIO uploads, made
+ sanity checks and bad clone support optional.
+ Paul Gortmaker : new reset code, reset card after probe at boot.
+ Paul Gortmaker : multiple card support for module users.
+ Paul Gortmaker : Support for PCI ne2k clones, similar to lance.c
+ Paul Gortmaker : Allow users with bad cards to avoid full probe.
+ Paul Gortmaker : PCI probe changes, more PCI cards supported.
+ rjohnson@analogic.com : Changed init order so an interrupt will only
+ occur after memory is allocated for dev->priv. Deallocated memory
+ last in cleanup_modue()
+ Richard Guenther : Added support for ISAPnP cards
+ Paul Gortmaker : Discontinued PCI support - use ne2k-pci.c instead.
+ Hayato Fujiwara : Add m32r support.
+
+*/
+
+/* Routines for the NatSemi-based designs (NE[12]000). */
+
+static const char version1[] =
+"ne.c:v1.10 9/23/94 Donald Becker (becker@scyld.com)\n";
+static const char version2[] =
+"Last modified Nov 1, 2000 by Paul Gortmaker\n";
+
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/isapnp.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/jiffies.h>
+#include <linux/platform_device.h>
+
+#include <asm/io.h>
+
+#include "8390.h"
+
+#define DRV_NAME "ne"
+
+/* Some defines that people can play with if so inclined. */
+
+/* Do we support clones that don't adhere to 14,15 of the SAprom ? */
+#define SUPPORT_NE_BAD_CLONES
+/* 0xbad = bad sig or no reset ack */
+#define BAD 0xbad
+
+#define MAX_NE_CARDS 4 /* Max number of NE cards per module */
+static struct platform_device *pdev_ne[MAX_NE_CARDS];
+static int io[MAX_NE_CARDS];
+static int irq[MAX_NE_CARDS];
+static int bad[MAX_NE_CARDS];
+static u32 ne_msg_enable;
+
+#ifdef MODULE
+module_param_array(io, int, NULL, 0);
+module_param_array(irq, int, NULL, 0);
+module_param_array(bad, int, NULL, 0);
+module_param_named(msg_enable, ne_msg_enable, uint, (S_IRUSR|S_IRGRP|S_IROTH));
+MODULE_PARM_DESC(io, "I/O base address(es),required");
+MODULE_PARM_DESC(irq, "IRQ number(s)");
+MODULE_PARM_DESC(bad, "Accept card(s) with bad signatures");
+MODULE_PARM_DESC(msg_enable, "Debug message level (see linux/netdevice.h for bitmap)");
+MODULE_DESCRIPTION("NE1000/NE2000 ISA/PnP Ethernet driver");
+MODULE_LICENSE("GPL");
+#endif /* MODULE */
+
+/* Do we perform extra sanity checks on stuff ? */
+/* #define NE_SANITY_CHECK */
+
+/* Do we implement the read before write bugfix ? */
+/* #define NE_RW_BUGFIX */
+
+/* Do we have a non std. amount of memory? (in units of 256 byte pages) */
+/* #define PACKETBUF_MEMSIZE 0x40 */
+
+/* This is set up so that no ISA autoprobe takes place. We can't guarantee
+that the ne2k probe is the last 8390 based probe to take place (as it
+is at boot) and so the probe will get confused by any other 8390 cards.
+ISA device autoprobes on a running machine are not recommended anyway. */
+#if !defined(MODULE) && (defined(CONFIG_ISA) || defined(CONFIG_M32R))
+/* Do we need a portlist for the ISA auto-probe ? */
+#define NEEDS_PORTLIST
+#endif
+
+/* A zero-terminated list of I/O addresses to be probed at boot. */
+#ifdef NEEDS_PORTLIST
+static unsigned int netcard_portlist[] __initdata = {
+ 0x300, 0x280, 0x320, 0x340, 0x360, 0x380, 0
+};
+#endif
+
+static struct isapnp_device_id isapnp_clone_list[] __initdata = {
+ { ISAPNP_CARD_ID('A','X','E',0x2011),
+ ISAPNP_VENDOR('A','X','E'), ISAPNP_FUNCTION(0x2011),
+ (long) "NetGear EA201" },
+ { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
+ ISAPNP_VENDOR('E','D','I'), ISAPNP_FUNCTION(0x0216),
+ (long) "NN NE2000" },
+ { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
+ ISAPNP_VENDOR('P','N','P'), ISAPNP_FUNCTION(0x80d6),
+ (long) "Generic PNP" },
+ { } /* terminate list */
+};
+
+MODULE_DEVICE_TABLE(isapnp, isapnp_clone_list);
+
+#ifdef SUPPORT_NE_BAD_CLONES
+/* A list of bad clones that we none-the-less recognize. */
+static struct { const char *name8, *name16; unsigned char SAprefix[4];}
+bad_clone_list[] __initdata = {
+ {"DE100", "DE200", {0x00, 0xDE, 0x01,}},
+ {"DE120", "DE220", {0x00, 0x80, 0xc8,}},
+ {"DFI1000", "DFI2000", {'D', 'F', 'I',}}, /* Original, eh? */
+ {"EtherNext UTP8", "EtherNext UTP16", {0x00, 0x00, 0x79}},
+ {"NE1000","NE2000-invalid", {0x00, 0x00, 0xd8}}, /* Ancient real NE1000. */
+ {"NN1000", "NN2000", {0x08, 0x03, 0x08}}, /* Outlaw no-name clone. */
+ {"4-DIM8","4-DIM16", {0x00,0x00,0x4d,}}, /* Outlaw 4-Dimension cards. */
+ {"Con-Intl_8", "Con-Intl_16", {0x00, 0x00, 0x24}}, /* Connect Int'nl */
+ {"ET-100","ET-200", {0x00, 0x45, 0x54}}, /* YANG and YA clone */
+ {"COMPEX","COMPEX16",{0x00,0x80,0x48}}, /* Broken ISA Compex cards */
+ {"E-LAN100", "E-LAN200", {0x00, 0x00, 0x5d}}, /* Broken ne1000 clones */
+ {"PCM-4823", "PCM-4823", {0x00, 0xc0, 0x6c}}, /* Broken Advantech MoBo */
+ {"REALTEK", "RTL8019", {0x00, 0x00, 0xe8}}, /* no-name with Realtek chip */
+#ifdef CONFIG_MACH_TX49XX
+ {"RBHMA4X00-RTL8019", "RBHMA4X00-RTL8019", {0x00, 0x60, 0x0a}}, /* Toshiba built-in */
+#endif
+ {"LCS-8834", "LCS-8836", {0x04, 0x04, 0x37}}, /* ShinyNet (SET) */
+ {NULL,}
+};
+#endif
+
+/* ---- No user-serviceable parts below ---- */
+
+#define NE_BASE (dev->base_addr)
+#define NE_CMD 0x00
+#define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */
+#define NE_RESET 0x1f /* Issue a read to reset, a write to clear. */
+#define NE_IO_EXTENT 0x20
+
+#define NE1SM_START_PG 0x20 /* First page of TX buffer */
+#define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */
+#define NESM_START_PG 0x40 /* First page of TX buffer */
+#define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
+
+#if defined(CONFIG_PLAT_MAPPI)
+# define DCR_VAL 0x4b
+#elif defined(CONFIG_PLAT_OAKS32R) || \
+ defined(CONFIG_MACH_TX49XX)
+# define DCR_VAL 0x48 /* 8-bit mode */
+#elif defined(CONFIG_ATARI) /* 8-bit mode on Atari, normal on Q40 */
+# define DCR_VAL (MACH_IS_ATARI ? 0x48 : 0x49)
+#else
+# define DCR_VAL 0x49
+#endif
+
+static int ne_probe1(struct net_device *dev, unsigned long ioaddr);
+static int ne_probe_isapnp(struct net_device *dev);
+
+static void ne_reset_8390(struct net_device *dev);
+static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
+ int ring_page);
+static void ne_block_input(struct net_device *dev, int count,
+ struct sk_buff *skb, int ring_offset);
+static void ne_block_output(struct net_device *dev, const int count,
+ const unsigned char *buf, const int start_page);
+
+
+/* Probe for various non-shared-memory ethercards.
+
+ NEx000-clone boards have a Station Address PROM (SAPROM) in the packet
+ buffer memory space. NE2000 clones have 0x57,0x57 in bytes 0x0e,0x0f of
+ the SAPROM, while other supposed NE2000 clones must be detected by their
+ SA prefix.
+
+ Reading the SAPROM from a word-wide card with the 8390 set in byte-wide
+ mode results in doubled values, which can be detected and compensated for.
+
+ The probe is also responsible for initializing the card and filling
+ in the 'dev' and 'ei_status' structures.
+
+ We use the minimum memory size for some ethercard product lines, iff we can't
+ distinguish models. You can increase the packet buffer size by setting
+ PACKETBUF_MEMSIZE. Reported Cabletron packet buffer locations are:
+ E1010 starts at 0x100 and ends at 0x2000.
+ E1010-x starts at 0x100 and ends at 0x8000. ("-x" means "more memory")
+ E2010 starts at 0x100 and ends at 0x4000.
+ E2010-x starts at 0x100 and ends at 0xffff. */
+
+static int __init do_ne_probe(struct net_device *dev)
+{
+ unsigned long base_addr = dev->base_addr;
+#ifdef NEEDS_PORTLIST
+ int orig_irq = dev->irq;
+#endif
+
+ /* First check any supplied i/o locations. User knows best. <cough> */
+ if (base_addr > 0x1ff) { /* Check a single specified location. */
+ int ret = ne_probe1(dev, base_addr);
+ if (ret)
+ netdev_warn(dev, "ne.c: No NE*000 card found at "
+ "i/o = %#lx\n", base_addr);
+ return ret;
+ }
+ else if (base_addr != 0) /* Don't probe at all. */
+ return -ENXIO;
+
+ /* Then look for any installed ISAPnP clones */
+ if (isapnp_present() && (ne_probe_isapnp(dev) == 0))
+ return 0;
+
+#ifdef NEEDS_PORTLIST
+ /* Last resort. The semi-risky ISA auto-probe. */
+ for (base_addr = 0; netcard_portlist[base_addr] != 0; base_addr++) {
+ int ioaddr = netcard_portlist[base_addr];
+ dev->irq = orig_irq;
+ if (ne_probe1(dev, ioaddr) == 0)
+ return 0;
+ }
+#endif
+
+ return -ENODEV;
+}
+
+static int __init ne_probe_isapnp(struct net_device *dev)
+{
+ int i;
+
+ for (i = 0; isapnp_clone_list[i].vendor != 0; i++) {
+ struct pnp_dev *idev = NULL;
+
+ while ((idev = pnp_find_dev(NULL,
+ isapnp_clone_list[i].vendor,
+ isapnp_clone_list[i].function,
+ idev))) {
+ /* Avoid already found cards from previous calls */
+ if (pnp_device_attach(idev) < 0)
+ continue;
+ if (pnp_activate_dev(idev) < 0) {
+ pnp_device_detach(idev);
+ continue;
+ }
+ /* if no io and irq, search for next */
+ if (!pnp_port_valid(idev, 0) || !pnp_irq_valid(idev, 0)) {
+ pnp_device_detach(idev);
+ continue;
+ }
+ /* found it */
+ dev->base_addr = pnp_port_start(idev, 0);
+ dev->irq = pnp_irq(idev, 0);
+ netdev_info(dev,
+ "ne.c: ISAPnP reports %s at i/o %#lx, irq %d.\n",
+ (char *) isapnp_clone_list[i].driver_data,
+ dev->base_addr, dev->irq);
+ if (ne_probe1(dev, dev->base_addr) != 0) { /* Shouldn't happen. */
+ netdev_err(dev,
+ "ne.c: Probe of ISAPnP card at %#lx failed.\n",
+ dev->base_addr);
+ pnp_device_detach(idev);
+ return -ENXIO;
+ }
+ ei_status.priv = (unsigned long)idev;
+ break;
+ }
+ if (!idev)
+ continue;
+ return 0;
+ }
+
+ return -ENODEV;
+}
+
+static int __init ne_probe1(struct net_device *dev, unsigned long ioaddr)
+{
+ int i;
+ unsigned char SA_prom[32];
+ int wordlength = 2;
+ const char *name = NULL;
+ int start_page, stop_page;
+ int neX000, ctron, copam, bad_card;
+ int reg0, ret;
+ static unsigned version_printed;
+ struct ei_device *ei_local = netdev_priv(dev);
+
+ if (!request_region(ioaddr, NE_IO_EXTENT, DRV_NAME))
+ return -EBUSY;
+
+ reg0 = inb_p(ioaddr);
+ if (reg0 == 0xFF) {
+ ret = -ENODEV;
+ goto err_out;
+ }
+
+ /* Do a preliminary verification that we have a 8390. */
+ {
+ int regd;
+ outb_p(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD);
+ regd = inb_p(ioaddr + 0x0d);
+ outb_p(0xff, ioaddr + 0x0d);
+ outb_p(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD);
+ inb_p(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */
+ if (inb_p(ioaddr + EN0_COUNTER0) != 0) {
+ outb_p(reg0, ioaddr);
+ outb_p(regd, ioaddr + 0x0d); /* Restore the old values. */
+ ret = -ENODEV;
+ goto err_out;
+ }
+ }
+
+ if ((ne_msg_enable & NETIF_MSG_DRV) && (version_printed++ == 0))
+ netdev_info(dev, "%s%s", version1, version2);
+
+ netdev_info(dev, "NE*000 ethercard probe at %#3lx:", ioaddr);
+
+ /* A user with a poor card that fails to ack the reset, or that
+ does not have a valid 0x57,0x57 signature can still use this
+ without having to recompile. Specifying an i/o address along
+ with an otherwise unused dev->mem_end value of "0xBAD" will
+ cause the driver to skip these parts of the probe. */
+
+ bad_card = ((dev->base_addr != 0) && (dev->mem_end == BAD));
+
+ /* Reset card. Who knows what dain-bramaged state it was left in. */
+
+ {
+ unsigned long reset_start_time = jiffies;
+
+ /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
+ outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET);
+
+ while ((inb_p(ioaddr + EN0_ISR) & ENISR_RESET) == 0)
+ if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
+ if (bad_card) {
+ pr_cont(" (warning: no reset ack)");
+ break;
+ } else {
+ pr_cont(" not found (no reset ack).\n");
+ ret = -ENODEV;
+ goto err_out;
+ }
+ }
+
+ outb_p(0xff, ioaddr + EN0_ISR); /* Ack all intr. */
+ }
+
+ /* Read the 16 bytes of station address PROM.
+ We must first initialize registers, similar to NS8390p_init(eifdev, 0).
+ We can't reliably read the SAPROM address without this.
+ (I learned the hard way!). */
+ {
+ struct {unsigned char value, offset; } program_seq[] =
+ {
+ {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
+ {0x48, EN0_DCFG}, /* Set byte-wide (0x48) access. */
+ {0x00, EN0_RCNTLO}, /* Clear the count regs. */
+ {0x00, EN0_RCNTHI},
+ {0x00, EN0_IMR}, /* Mask completion irq. */
+ {0xFF, EN0_ISR},
+ {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */
+ {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
+ {32, EN0_RCNTLO},
+ {0x00, EN0_RCNTHI},
+ {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */
+ {0x00, EN0_RSARHI},
+ {E8390_RREAD+E8390_START, E8390_CMD},
+ };
+
+ for (i = 0; i < ARRAY_SIZE(program_seq); i++)
+ outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);
+
+ }
+ for(i = 0; i < 32 /*sizeof(SA_prom)*/; i+=2) {
+ SA_prom[i] = inb(ioaddr + NE_DATAPORT);
+ SA_prom[i+1] = inb(ioaddr + NE_DATAPORT);
+ if (SA_prom[i] != SA_prom[i+1])
+ wordlength = 1;
+ }
+
+ if (wordlength == 2)
+ {
+ for (i = 0; i < 16; i++)
+ SA_prom[i] = SA_prom[i+i];
+ /* We must set the 8390 for word mode. */
+ outb_p(DCR_VAL, ioaddr + EN0_DCFG);
+ start_page = NESM_START_PG;
+
+ /*
+ * Realtek RTL8019AS datasheet says that the PSTOP register
+ * shouldn't exceed 0x60 in 8-bit mode.
+ * This chip can be identified by reading the signature from
+ * the remote byte count registers (otherwise write-only)...
+ */
+ if ((DCR_VAL & 0x01) == 0 && /* 8-bit mode */
+ inb(ioaddr + EN0_RCNTLO) == 0x50 &&
+ inb(ioaddr + EN0_RCNTHI) == 0x70)
+ stop_page = 0x60;
+ else
+ stop_page = NESM_STOP_PG;
+ } else {
+ start_page = NE1SM_START_PG;
+ stop_page = NE1SM_STOP_PG;
+ }
+
+#if defined(CONFIG_PLAT_MAPPI) || defined(CONFIG_PLAT_OAKS32R)
+ neX000 = ((SA_prom[14] == 0x57 && SA_prom[15] == 0x57)
+ || (SA_prom[14] == 0x42 && SA_prom[15] == 0x42));
+#else
+ neX000 = (SA_prom[14] == 0x57 && SA_prom[15] == 0x57);
+#endif
+ ctron = (SA_prom[0] == 0x00 && SA_prom[1] == 0x00 && SA_prom[2] == 0x1d);
+ copam = (SA_prom[14] == 0x49 && SA_prom[15] == 0x00);
+
+ /* Set up the rest of the parameters. */
+ if (neX000 || bad_card || copam) {
+ name = (wordlength == 2) ? "NE2000" : "NE1000";
+ }
+ else if (ctron)
+ {
+ name = (wordlength == 2) ? "Ctron-8" : "Ctron-16";
+ start_page = 0x01;
+ stop_page = (wordlength == 2) ? 0x40 : 0x20;
+ }
+ else
+ {
+#ifdef SUPPORT_NE_BAD_CLONES
+ /* Ack! Well, there might be a *bad* NE*000 clone there.
+ Check for total bogus addresses. */
+ for (i = 0; bad_clone_list[i].name8; i++)
+ {
+ if (SA_prom[0] == bad_clone_list[i].SAprefix[0] &&
+ SA_prom[1] == bad_clone_list[i].SAprefix[1] &&
+ SA_prom[2] == bad_clone_list[i].SAprefix[2])
+ {
+ if (wordlength == 2)
+ {
+ name = bad_clone_list[i].name16;
+ } else {
+ name = bad_clone_list[i].name8;
+ }
+ break;
+ }
+ }
+ if (bad_clone_list[i].name8 == NULL)
+ {
+ pr_cont(" not found (invalid signature %2.2x %2.2x).\n",
+ SA_prom[14], SA_prom[15]);
+ ret = -ENXIO;
+ goto err_out;
+ }
+#else
+ pr_cont(" not found.\n");
+ ret = -ENXIO;
+ goto err_out;
+#endif
+ }
+
+ if (dev->irq < 2)
+ {
+ unsigned long cookie = probe_irq_on();
+ outb_p(0x50, ioaddr + EN0_IMR); /* Enable one interrupt. */
+ outb_p(0x00, ioaddr + EN0_RCNTLO);
+ outb_p(0x00, ioaddr + EN0_RCNTHI);
+ outb_p(E8390_RREAD+E8390_START, ioaddr); /* Trigger it... */
+ mdelay(10); /* wait 10ms for interrupt to propagate */
+ outb_p(0x00, ioaddr + EN0_IMR); /* Mask it again. */
+ dev->irq = probe_irq_off(cookie);
+ if (netif_msg_probe(ei_local))
+ pr_cont(" autoirq is %d", dev->irq);
+ } else if (dev->irq == 2)
+ /* Fixup for users that don't know that IRQ 2 is really IRQ 9,
+ or don't know which one to set. */
+ dev->irq = 9;
+
+ if (! dev->irq) {
+ pr_cont(" failed to detect IRQ line.\n");
+ ret = -EAGAIN;
+ goto err_out;
+ }
+
+ /* Snarf the interrupt now. There's no point in waiting since we cannot
+ share and the board will usually be enabled. */
+ ret = request_irq(dev->irq, eip_interrupt, 0, name, dev);
+ if (ret) {
+ pr_cont(" unable to get IRQ %d (errno=%d).\n", dev->irq, ret);
+ goto err_out;
+ }
+
+ dev->base_addr = ioaddr;
+
+#ifdef CONFIG_PLAT_MAPPI
+ outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP,
+ ioaddr + E8390_CMD); /* 0x61 */
+ for (i = 0; i < ETH_ALEN; i++) {
+ dev->dev_addr[i] = SA_prom[i]
+ = inb_p(ioaddr + EN1_PHYS_SHIFT(i));
+ }
+#else
+ for (i = 0; i < ETH_ALEN; i++) {
+ dev->dev_addr[i] = SA_prom[i];
+ }
+#endif
+
+ pr_cont("%pM\n", dev->dev_addr);
+
+ ei_status.name = name;
+ ei_status.tx_start_page = start_page;
+ ei_status.stop_page = stop_page;
+
+ /* Use 16-bit mode only if this wasn't overridden by DCR_VAL */
+ ei_status.word16 = (wordlength == 2 && (DCR_VAL & 0x01));
+
+ ei_status.rx_start_page = start_page + TX_PAGES;
+#ifdef PACKETBUF_MEMSIZE
+ /* Allow the packet buffer size to be overridden by know-it-alls. */
+ ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
+#endif
+
+ ei_status.reset_8390 = &ne_reset_8390;
+ ei_status.block_input = &ne_block_input;
+ ei_status.block_output = &ne_block_output;
+ ei_status.get_8390_hdr = &ne_get_8390_hdr;
+ ei_status.priv = 0;
+
+ dev->netdev_ops = &eip_netdev_ops;
+ NS8390p_init(dev, 0);
+
+ ei_local->msg_enable = ne_msg_enable;
+ ret = register_netdev(dev);
+ if (ret)
+ goto out_irq;
+ netdev_info(dev, "%s found at %#lx, using IRQ %d.\n",
+ name, ioaddr, dev->irq);
+ return 0;
+
+out_irq:
+ free_irq(dev->irq, dev);
+err_out:
+ release_region(ioaddr, NE_IO_EXTENT);
+ return ret;
+}
+
+/* Hard reset the card. This used to pause for the same period that a
+ 8390 reset command required, but that shouldn't be necessary. */
+
+static void ne_reset_8390(struct net_device *dev)
+{
+ unsigned long reset_start_time = jiffies;
+ struct ei_device *ei_local = netdev_priv(dev);
+
+ netif_dbg(ei_local, hw, dev, "resetting the 8390 t=%ld...\n", jiffies);
+
+ /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
+ outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
+
+ ei_status.txing = 0;
+ ei_status.dmaing = 0;
+
+ /* This check _should_not_ be necessary, omit eventually. */
+ while ((inb_p(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
+ if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
+ netdev_err(dev, "ne_reset_8390() did not complete.\n");
+ break;
+ }
+ outb_p(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */
+}
+
+/* Grab the 8390 specific header. Similar to the block_input routine, but
+ we don't need to be concerned with ring wrap as the header will be at
+ the start of a page, so we optimize accordingly. */
+
+static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
+{
+ int nic_base = dev->base_addr;
+
+ /* This *shouldn't* happen. If it does, it's the last thing you'll see */
+
+ if (ei_status.dmaing)
+ {
+ netdev_err(dev, "DMAing conflict in ne_get_8390_hdr "
+ "[DMAstat:%d][irqlock:%d].\n",
+ ei_status.dmaing, ei_status.irqlock);
+ return;
+ }
+
+ ei_status.dmaing |= 0x01;
+ outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
+ outb_p(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
+ outb_p(0, nic_base + EN0_RCNTHI);
+ outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
+ outb_p(ring_page, nic_base + EN0_RSARHI);
+ outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
+
+ if (ei_status.word16)
+ insw(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1);
+ else
+ insb(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr));
+
+ outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
+ ei_status.dmaing &= ~0x01;
+
+ le16_to_cpus(&hdr->count);
+}
+
+/* Block input and output, similar to the Crynwr packet driver. If you
+ are porting to a new ethercard, look at the packet driver source for hints.
+ The NEx000 doesn't share the on-board packet memory -- you have to put
+ the packet out through the "remote DMA" dataport using outb. */
+
+static void ne_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
+{
+#ifdef NE_SANITY_CHECK
+ int xfer_count = count;
+ struct ei_device *ei_local = netdev_priv(dev);
+#endif
+ int nic_base = dev->base_addr;
+ char *buf = skb->data;
+
+ /* This *shouldn't* happen. If it does, it's the last thing you'll see */
+ if (ei_status.dmaing)
+ {
+ netdev_err(dev, "DMAing conflict in ne_block_input "
+ "[DMAstat:%d][irqlock:%d].\n",
+ ei_status.dmaing, ei_status.irqlock);
+ return;
+ }
+ ei_status.dmaing |= 0x01;
+ outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
+ outb_p(count & 0xff, nic_base + EN0_RCNTLO);
+ outb_p(count >> 8, nic_base + EN0_RCNTHI);
+ outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
+ outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
+ outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
+ if (ei_status.word16)
+ {
+ insw(NE_BASE + NE_DATAPORT,buf,count>>1);
+ if (count & 0x01)
+ {
+ buf[count-1] = inb(NE_BASE + NE_DATAPORT);
+#ifdef NE_SANITY_CHECK
+ xfer_count++;
+#endif
+ }
+ } else {
+ insb(NE_BASE + NE_DATAPORT, buf, count);
+ }
+
+#ifdef NE_SANITY_CHECK
+ /* This was for the ALPHA version only, but enough people have
+ been encountering problems so it is still here. If you see
+ this message you either 1) have a slightly incompatible clone
+ or 2) have noise/speed problems with your bus. */
+
+ if (netif_msg_rx_status(ei_local))
+ {
+ /* DMA termination address check... */
+ int addr, tries = 20;
+ do {
+ /* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here
+ -- it's broken for Rx on some cards! */
+ int high = inb_p(nic_base + EN0_RSARHI);
+ int low = inb_p(nic_base + EN0_RSARLO);
+ addr = (high << 8) + low;
+ if (((ring_offset + xfer_count) & 0xff) == low)
+ break;
+ } while (--tries > 0);
+ if (tries <= 0)
+ netdev_warn(dev, "RX transfer address mismatch,"
+ "%#4.4x (expected) vs. %#4.4x (actual).\n",
+ ring_offset + xfer_count, addr);
+ }
+#endif
+ outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
+ ei_status.dmaing &= ~0x01;
+}
+
+static void ne_block_output(struct net_device *dev, int count,
+ const unsigned char *buf, const int start_page)
+{
+ int nic_base = NE_BASE;
+ unsigned long dma_start;
+#ifdef NE_SANITY_CHECK
+ int retries = 0;
+ struct ei_device *ei_local = netdev_priv(dev);
+#endif
+
+ /* Round the count up for word writes. Do we need to do this?
+ What effect will an odd byte count have on the 8390?
+ I should check someday. */
+
+ if (ei_status.word16 && (count & 0x01))
+ count++;
+
+ /* This *shouldn't* happen. If it does, it's the last thing you'll see */
+ if (ei_status.dmaing)
+ {
+ netdev_err(dev, "DMAing conflict in ne_block_output."
+ "[DMAstat:%d][irqlock:%d]\n",
+ ei_status.dmaing, ei_status.irqlock);
+ return;
+ }
+ ei_status.dmaing |= 0x01;
+ /* We should already be in page 0, but to be safe... */
+ outb_p(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
+
+#ifdef NE_SANITY_CHECK
+retry:
+#endif
+
+#ifdef NE8390_RW_BUGFIX
+ /* Handle the read-before-write bug the same way as the
+ Crynwr packet driver -- the NatSemi method doesn't work.
+ Actually this doesn't always work either, but if you have
+ problems with your NEx000 this is better than nothing! */
+
+ outb_p(0x42, nic_base + EN0_RCNTLO);
+ outb_p(0x00, nic_base + EN0_RCNTHI);
+ outb_p(0x42, nic_base + EN0_RSARLO);
+ outb_p(0x00, nic_base + EN0_RSARHI);
+ outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
+ /* Make certain that the dummy read has occurred. */
+ udelay(6);
+#endif
+
+ outb_p(ENISR_RDC, nic_base + EN0_ISR);
+
+ /* Now the normal output. */
+ outb_p(count & 0xff, nic_base + EN0_RCNTLO);
+ outb_p(count >> 8, nic_base + EN0_RCNTHI);
+ outb_p(0x00, nic_base + EN0_RSARLO);
+ outb_p(start_page, nic_base + EN0_RSARHI);
+
+ outb_p(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
+ if (ei_status.word16) {
+ outsw(NE_BASE + NE_DATAPORT, buf, count>>1);
+ } else {
+ outsb(NE_BASE + NE_DATAPORT, buf, count);
+ }
+
+ dma_start = jiffies;
+
+#ifdef NE_SANITY_CHECK
+ /* This was for the ALPHA version only, but enough people have
+ been encountering problems so it is still here. */
+
+ if (netif_msg_tx_queued(ei_local))
+ {
+ /* DMA termination address check... */
+ int addr, tries = 20;
+ do {
+ int high = inb_p(nic_base + EN0_RSARHI);
+ int low = inb_p(nic_base + EN0_RSARLO);
+ addr = (high << 8) + low;
+ if ((start_page << 8) + count == addr)
+ break;
+ } while (--tries > 0);
+
+ if (tries <= 0)
+ {
+ netdev_warn(dev, "Tx packet transfer address mismatch,"
+ "%#4.4x (expected) vs. %#4.4x (actual).\n",
+ (start_page << 8) + count, addr);
+ if (retries++ == 0)
+ goto retry;
+ }
+ }
+#endif
+
+ while ((inb_p(nic_base + EN0_ISR) & ENISR_RDC) == 0)
+ if (time_after(jiffies, dma_start + 2*HZ/100)) { /* 20ms */
+ netdev_warn(dev, "timeout waiting for Tx RDC.\n");
+ ne_reset_8390(dev);
+ NS8390p_init(dev, 1);
+ break;
+ }
+
+ outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
+ ei_status.dmaing &= ~0x01;
+}
+
+static int __init ne_drv_probe(struct platform_device *pdev)
+{
+ struct net_device *dev;
+ int err, this_dev = pdev->id;
+ struct resource *res;
+
+ dev = alloc_eip_netdev();
+ if (!dev)
+ return -ENOMEM;
+
+ /* ne.c doesn't populate resources in platform_device, but
+ * rbtx4927_ne_init and rbtx4938_ne_init do register devices
+ * with resources.
+ */
+ res = platform_get_resource(pdev, IORESOURCE_IO, 0);
+ if (res) {
+ dev->base_addr = res->start;
+ dev->irq = platform_get_irq(pdev, 0);
+ } else {
+ if (this_dev < 0 || this_dev >= MAX_NE_CARDS) {
+ free_netdev(dev);
+ return -EINVAL;
+ }
+ dev->base_addr = io[this_dev];
+ dev->irq = irq[this_dev];
+ dev->mem_end = bad[this_dev];
+ }
+ SET_NETDEV_DEV(dev, &pdev->dev);
+ err = do_ne_probe(dev);
+ if (err) {
+ free_netdev(dev);
+ return err;
+ }
+ platform_set_drvdata(pdev, dev);
+
+ /* Update with any values found by probing, don't update if
+ * resources were specified.
+ */
+ if (!res) {
+ io[this_dev] = dev->base_addr;
+ irq[this_dev] = dev->irq;
+ }
+ return 0;
+}
+
+static int ne_drv_remove(struct platform_device *pdev)
+{
+ struct net_device *dev = platform_get_drvdata(pdev);
+
+ if (dev) {
+ struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
+ netif_device_detach(dev);
+ unregister_netdev(dev);
+ if (idev)
+ pnp_device_detach(idev);
+ /* Careful ne_drv_remove can be called twice, once from
+ * the platform_driver.remove and again when the
+ * platform_device is being removed.
+ */
+ ei_status.priv = 0;
+ free_irq(dev->irq, dev);
+ release_region(dev->base_addr, NE_IO_EXTENT);
+ free_netdev(dev);
+ }
+ return 0;
+}
+
+/* Remove unused devices or all if true. */
+static void ne_loop_rm_unreg(int all)
+{
+ int this_dev;
+ struct platform_device *pdev;
+ for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
+ pdev = pdev_ne[this_dev];
+ /* No network device == unused */
+ if (pdev && (!platform_get_drvdata(pdev) || all)) {
+ ne_drv_remove(pdev);
+ platform_device_unregister(pdev);
+ pdev_ne[this_dev] = NULL;
+ }
+ }
+}
+
+#ifdef CONFIG_PM
+static int ne_drv_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ struct net_device *dev = platform_get_drvdata(pdev);
+
+ if (netif_running(dev)) {
+ struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
+ netif_device_detach(dev);
+ if (idev)
+ pnp_stop_dev(idev);
+ }
+ return 0;
+}
+
+static int ne_drv_resume(struct platform_device *pdev)
+{
+ struct net_device *dev = platform_get_drvdata(pdev);
+
+ if (netif_running(dev)) {
+ struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
+ if (idev)
+ pnp_start_dev(idev);
+ ne_reset_8390(dev);
+ NS8390p_init(dev, 1);
+ netif_device_attach(dev);
+ }
+ return 0;
+}
+#else
+#define ne_drv_suspend NULL
+#define ne_drv_resume NULL
+#endif
+
+static struct platform_driver ne_driver = {
+ .remove = ne_drv_remove,
+ .suspend = ne_drv_suspend,
+ .resume = ne_drv_resume,
+ .driver = {
+ .name = DRV_NAME,
+ },
+};
+
+static void __init ne_add_devices(void)
+{
+ int this_dev;
+ struct platform_device *pdev;
+
+ for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
+ if (pdev_ne[this_dev])
+ continue;
+ pdev = platform_device_register_simple(
+ DRV_NAME, this_dev, NULL, 0);
+ if (IS_ERR(pdev))
+ continue;
+ pdev_ne[this_dev] = pdev;
+ }
+}
+
+#ifdef MODULE
+int __init init_module(void)
+{
+ int retval;
+ ne_add_devices();
+ retval = platform_driver_probe(&ne_driver, ne_drv_probe);
+ if (retval) {
+ if (io[0] == 0)
+ pr_notice("ne.c: You must supply \"io=0xNNN\""
+ " value(s) for ISA cards.\n");
+ ne_loop_rm_unreg(1);
+ return retval;
+ }
+
+ /* Unregister unused platform_devices. */
+ ne_loop_rm_unreg(0);
+ return retval;
+}
+#else /* MODULE */
+static int __init ne_init(void)
+{
+ int retval = platform_driver_probe(&ne_driver, ne_drv_probe);
+
+ /* Unregister unused platform_devices. */
+ ne_loop_rm_unreg(0);
+ return retval;
+}
+module_init(ne_init);
+
+struct net_device * __init ne_probe(int unit)
+{
+ int this_dev;
+ struct net_device *dev;
+
+ /* Find an empty slot, that is no net_device and zero io port. */
+ this_dev = 0;
+ while ((pdev_ne[this_dev] && platform_get_drvdata(pdev_ne[this_dev])) ||
+ io[this_dev]) {
+ if (++this_dev == MAX_NE_CARDS)
+ return ERR_PTR(-ENOMEM);
+ }
+
+ /* Get irq, io from kernel command line */
+ dev = alloc_eip_netdev();
+ if (!dev)
+ return ERR_PTR(-ENOMEM);
+
+ sprintf(dev->name, "eth%d", unit);
+ netdev_boot_setup_check(dev);
+
+ io[this_dev] = dev->base_addr;
+ irq[this_dev] = dev->irq;
+ bad[this_dev] = dev->mem_end;
+
+ free_netdev(dev);
+
+ ne_add_devices();
+
+ /* return the first device found */
+ for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
+ if (pdev_ne[this_dev]) {
+ dev = platform_get_drvdata(pdev_ne[this_dev]);
+ if (dev)
+ return dev;
+ }
+ }
+
+ return ERR_PTR(-ENODEV);
+}
+#endif /* MODULE */
+
+static void __exit ne_exit(void)
+{
+ platform_driver_unregister(&ne_driver);
+ ne_loop_rm_unreg(1);
+}
+module_exit(ne_exit);
Code Review / kvmfornfv.git / blobdiff