| /* 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_hw_array(io, int, ioport, NULL, 0); |
| module_param_hw_array(irq, int, irq, NULL, 0); |
| module_param_array(bad, int, NULL, 0); |
| module_param_named(msg_enable, ne_msg_enable, uint, 0444); |
| 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 (ne_msg_enable & NETIF_MSG_PROBE) |
| 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); |