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1001 lines
29 KiB
1001 lines
29 KiB
/* ne.c: A general non-shared-memory NS8390 ethernet driver for linux. */ |
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/* |
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Written 1992-94 by Donald Becker. |
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|
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Copyright 1993 United States Government as represented by the |
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Director, National Security Agency. |
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|
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This software may be used and distributed according to the terms |
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of the GNU General Public License, incorporated herein by reference. |
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|
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The author may be reached as [email protected], or C/O |
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Scyld Computing Corporation, 410 Severn Ave., Suite 210, Annapolis MD 21403 |
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This driver should work with many programmed-I/O 8390-based ethernet |
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boards. Currently it supports the NE1000, NE2000, many clones, |
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and some Cabletron products. |
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Changelog: |
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Paul Gortmaker : use ENISR_RDC to monitor Tx PIO uploads, made |
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sanity checks and bad clone support optional. |
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Paul Gortmaker : new reset code, reset card after probe at boot. |
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Paul Gortmaker : multiple card support for module users. |
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Paul Gortmaker : Support for PCI ne2k clones, similar to lance.c |
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Paul Gortmaker : Allow users with bad cards to avoid full probe. |
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Paul Gortmaker : PCI probe changes, more PCI cards supported. |
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[email protected] : Changed init order so an interrupt will only |
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occur after memory is allocated for dev->priv. Deallocated memory |
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last in cleanup_modue() |
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Richard Guenther : Added support for ISAPnP cards |
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Paul Gortmaker : Discontinued PCI support - use ne2k-pci.c instead. |
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Hayato Fujiwara : Add m32r support. |
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*/ |
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/* Routines for the NatSemi-based designs (NE[12]000). */ |
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static const char version1[] = |
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"ne.c:v1.10 9/23/94 Donald Becker ([email protected])\n"; |
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static const char version2[] = |
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"Last modified Nov 1, 2000 by Paul Gortmaker\n"; |
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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/init.h> |
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#include <linux/interrupt.h> |
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#include <linux/delay.h> |
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#include <linux/netdevice.h> |
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#include <linux/etherdevice.h> |
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#include <linux/jiffies.h> |
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#include <linux/platform_device.h> |
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#include <asm/io.h> |
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#include "8390.h" |
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#define DRV_NAME "ne" |
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/* Some defines that people can play with if so inclined. */ |
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/* Do we support clones that don't adhere to 14,15 of the SAprom ? */ |
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#define SUPPORT_NE_BAD_CLONES |
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/* 0xbad = bad sig or no reset ack */ |
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#define BAD 0xbad |
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#define MAX_NE_CARDS 4 /* Max number of NE cards per module */ |
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static struct platform_device *pdev_ne[MAX_NE_CARDS]; |
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static int io[MAX_NE_CARDS]; |
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static int irq[MAX_NE_CARDS]; |
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static int bad[MAX_NE_CARDS]; |
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static u32 ne_msg_enable; |
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#ifdef MODULE |
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module_param_hw_array(io, int, ioport, NULL, 0); |
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module_param_hw_array(irq, int, irq, NULL, 0); |
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module_param_array(bad, int, NULL, 0); |
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module_param_named(msg_enable, ne_msg_enable, uint, 0444); |
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MODULE_PARM_DESC(io, "I/O base address(es),required"); |
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MODULE_PARM_DESC(irq, "IRQ number(s)"); |
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MODULE_PARM_DESC(bad, "Accept card(s) with bad signatures"); |
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MODULE_PARM_DESC(msg_enable, "Debug message level (see linux/netdevice.h for bitmap)"); |
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MODULE_DESCRIPTION("NE1000/NE2000 ISA/PnP Ethernet driver"); |
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MODULE_LICENSE("GPL"); |
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#endif /* MODULE */ |
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/* Do we perform extra sanity checks on stuff ? */ |
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/* #define NE_SANITY_CHECK */ |
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/* Do we implement the read before write bugfix ? */ |
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/* #define NE_RW_BUGFIX */ |
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/* Do we have a non std. amount of memory? (in units of 256 byte pages) */ |
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/* #define PACKETBUF_MEMSIZE 0x40 */ |
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/* This is set up so that no ISA autoprobe takes place. We can't guarantee |
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that the ne2k probe is the last 8390 based probe to take place (as it |
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is at boot) and so the probe will get confused by any other 8390 cards. |
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ISA device autoprobes on a running machine are not recommended anyway. */ |
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#if !defined(MODULE) && defined(CONFIG_ISA) |
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/* Do we need a portlist for the ISA auto-probe ? */ |
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#define NEEDS_PORTLIST |
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#endif |
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/* A zero-terminated list of I/O addresses to be probed at boot. */ |
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#ifdef NEEDS_PORTLIST |
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static unsigned int netcard_portlist[] __initdata = { |
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0x300, 0x280, 0x320, 0x340, 0x360, 0x380, 0 |
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}; |
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#endif |
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static struct isapnp_device_id isapnp_clone_list[] __initdata = { |
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{ ISAPNP_CARD_ID('A','X','E',0x2011), |
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ISAPNP_VENDOR('A','X','E'), ISAPNP_FUNCTION(0x2011), |
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(long) "NetGear EA201" }, |
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{ ISAPNP_ANY_ID, ISAPNP_ANY_ID, |
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ISAPNP_VENDOR('E','D','I'), ISAPNP_FUNCTION(0x0216), |
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(long) "NN NE2000" }, |
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{ ISAPNP_ANY_ID, ISAPNP_ANY_ID, |
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ISAPNP_VENDOR('P','N','P'), ISAPNP_FUNCTION(0x80d6), |
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(long) "Generic PNP" }, |
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{ } /* terminate list */ |
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}; |
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MODULE_DEVICE_TABLE(isapnp, isapnp_clone_list); |
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#ifdef SUPPORT_NE_BAD_CLONES |
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/* A list of bad clones that we none-the-less recognize. */ |
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static struct { const char *name8, *name16; unsigned char SAprefix[4];} |
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bad_clone_list[] __initdata = { |
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{"DE100", "DE200", {0x00, 0xDE, 0x01,}}, |
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{"DE120", "DE220", {0x00, 0x80, 0xc8,}}, |
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{"DFI1000", "DFI2000", {'D', 'F', 'I',}}, /* Original, eh? */ |
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{"EtherNext UTP8", "EtherNext UTP16", {0x00, 0x00, 0x79}}, |
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{"NE1000","NE2000-invalid", {0x00, 0x00, 0xd8}}, /* Ancient real NE1000. */ |
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{"NN1000", "NN2000", {0x08, 0x03, 0x08}}, /* Outlaw no-name clone. */ |
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{"4-DIM8","4-DIM16", {0x00,0x00,0x4d,}}, /* Outlaw 4-Dimension cards. */ |
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{"Con-Intl_8", "Con-Intl_16", {0x00, 0x00, 0x24}}, /* Connect Int'nl */ |
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{"ET-100","ET-200", {0x00, 0x45, 0x54}}, /* YANG and YA clone */ |
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{"COMPEX","COMPEX16",{0x00,0x80,0x48}}, /* Broken ISA Compex cards */ |
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{"E-LAN100", "E-LAN200", {0x00, 0x00, 0x5d}}, /* Broken ne1000 clones */ |
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{"PCM-4823", "PCM-4823", {0x00, 0xc0, 0x6c}}, /* Broken Advantech MoBo */ |
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{"REALTEK", "RTL8019", {0x00, 0x00, 0xe8}}, /* no-name with Realtek chip */ |
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#ifdef CONFIG_MACH_TX49XX |
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{"RBHMA4X00-RTL8019", "RBHMA4X00-RTL8019", {0x00, 0x60, 0x0a}}, /* Toshiba built-in */ |
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#endif |
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{"LCS-8834", "LCS-8836", {0x04, 0x04, 0x37}}, /* ShinyNet (SET) */ |
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{NULL,} |
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}; |
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#endif |
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/* ---- No user-serviceable parts below ---- */ |
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#define NE_BASE (dev->base_addr) |
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#define NE_CMD 0x00 |
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#define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */ |
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#define NE_RESET 0x1f /* Issue a read to reset, a write to clear. */ |
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#define NE_IO_EXTENT 0x20 |
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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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#if defined(CONFIG_MACH_TX49XX) |
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# define DCR_VAL 0x48 /* 8-bit mode */ |
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#elif defined(CONFIG_ATARI) /* 8-bit mode on Atari, normal on Q40 */ |
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# define DCR_VAL (MACH_IS_ATARI ? 0x48 : 0x49) |
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#else |
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# define DCR_VAL 0x49 |
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#endif |
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static int ne_probe1(struct net_device *dev, unsigned long ioaddr); |
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static int ne_probe_isapnp(struct net_device *dev); |
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static void ne_reset_8390(struct net_device *dev); |
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static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, |
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int ring_page); |
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static void ne_block_input(struct net_device *dev, int count, |
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struct sk_buff *skb, int ring_offset); |
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static void ne_block_output(struct net_device *dev, const int count, |
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const unsigned char *buf, const int start_page); |
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/* Probe for various non-shared-memory ethercards. |
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NEx000-clone boards have a Station Address PROM (SAPROM) in the packet |
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buffer memory space. NE2000 clones have 0x57,0x57 in bytes 0x0e,0x0f of |
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the SAPROM, while other supposed NE2000 clones must be detected by their |
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SA prefix. |
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Reading the SAPROM from a word-wide card with the 8390 set in byte-wide |
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mode results in doubled values, which can be detected and compensated for. |
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The probe is also responsible for initializing the card and filling |
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in the 'dev' and 'ei_status' structures. |
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We use the minimum memory size for some ethercard product lines, iff we can't |
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distinguish models. You can increase the packet buffer size by setting |
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PACKETBUF_MEMSIZE. Reported Cabletron packet buffer locations are: |
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E1010 starts at 0x100 and ends at 0x2000. |
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E1010-x starts at 0x100 and ends at 0x8000. ("-x" means "more memory") |
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E2010 starts at 0x100 and ends at 0x4000. |
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E2010-x starts at 0x100 and ends at 0xffff. */ |
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static int __init do_ne_probe(struct net_device *dev) |
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{ |
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unsigned long base_addr = dev->base_addr; |
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#ifdef NEEDS_PORTLIST |
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int orig_irq = dev->irq; |
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#endif |
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/* First check any supplied i/o locations. User knows best. <cough> */ |
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if (base_addr > 0x1ff) { /* Check a single specified location. */ |
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int ret = ne_probe1(dev, base_addr); |
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if (ret) |
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netdev_warn(dev, "ne.c: No NE*000 card found at " |
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"i/o = %#lx\n", base_addr); |
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return ret; |
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} |
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else if (base_addr != 0) /* Don't probe at all. */ |
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return -ENXIO; |
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/* Then look for any installed ISAPnP clones */ |
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if (isapnp_present() && (ne_probe_isapnp(dev) == 0)) |
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return 0; |
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#ifdef NEEDS_PORTLIST |
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/* Last resort. The semi-risky ISA auto-probe. */ |
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for (base_addr = 0; netcard_portlist[base_addr] != 0; base_addr++) { |
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int ioaddr = netcard_portlist[base_addr]; |
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dev->irq = orig_irq; |
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if (ne_probe1(dev, ioaddr) == 0) |
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return 0; |
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} |
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#endif |
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return -ENODEV; |
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} |
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static int __init ne_probe_isapnp(struct net_device *dev) |
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{ |
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int i; |
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for (i = 0; isapnp_clone_list[i].vendor != 0; i++) { |
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struct pnp_dev *idev = NULL; |
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while ((idev = pnp_find_dev(NULL, |
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isapnp_clone_list[i].vendor, |
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isapnp_clone_list[i].function, |
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idev))) { |
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/* Avoid already found cards from previous calls */ |
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if (pnp_device_attach(idev) < 0) |
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continue; |
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if (pnp_activate_dev(idev) < 0) { |
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pnp_device_detach(idev); |
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continue; |
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} |
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/* if no io and irq, search for next */ |
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if (!pnp_port_valid(idev, 0) || !pnp_irq_valid(idev, 0)) { |
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pnp_device_detach(idev); |
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continue; |
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} |
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/* found it */ |
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dev->base_addr = pnp_port_start(idev, 0); |
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dev->irq = pnp_irq(idev, 0); |
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netdev_info(dev, |
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"ne.c: ISAPnP reports %s at i/o %#lx, irq %d.\n", |
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(char *) isapnp_clone_list[i].driver_data, |
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dev->base_addr, dev->irq); |
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if (ne_probe1(dev, dev->base_addr) != 0) { /* Shouldn't happen. */ |
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netdev_err(dev, |
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"ne.c: Probe of ISAPnP card at %#lx failed.\n", |
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dev->base_addr); |
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pnp_device_detach(idev); |
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return -ENXIO; |
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} |
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ei_status.priv = (unsigned long)idev; |
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break; |
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} |
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if (!idev) |
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continue; |
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return 0; |
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} |
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return -ENODEV; |
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} |
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static int __init ne_probe1(struct net_device *dev, unsigned long ioaddr) |
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{ |
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int i; |
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unsigned char SA_prom[32]; |
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int wordlength = 2; |
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const char *name = NULL; |
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int start_page, stop_page; |
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int neX000, ctron, copam, bad_card; |
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int reg0, ret; |
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static unsigned version_printed; |
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struct ei_device *ei_local = netdev_priv(dev); |
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if (!request_region(ioaddr, NE_IO_EXTENT, DRV_NAME)) |
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return -EBUSY; |
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reg0 = inb_p(ioaddr); |
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if (reg0 == 0xFF) { |
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ret = -ENODEV; |
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goto err_out; |
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} |
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/* Do a preliminary verification that we have a 8390. */ |
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{ |
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int regd; |
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outb_p(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD); |
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regd = inb_p(ioaddr + 0x0d); |
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outb_p(0xff, ioaddr + 0x0d); |
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outb_p(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD); |
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inb_p(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */ |
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if (inb_p(ioaddr + EN0_COUNTER0) != 0) { |
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outb_p(reg0, ioaddr); |
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outb_p(regd, ioaddr + 0x0d); /* Restore the old values. */ |
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ret = -ENODEV; |
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goto err_out; |
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} |
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} |
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if ((ne_msg_enable & NETIF_MSG_DRV) && (version_printed++ == 0)) |
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netdev_info(dev, "%s%s", version1, version2); |
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netdev_info(dev, "NE*000 ethercard probe at %#3lx:", ioaddr); |
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/* A user with a poor card that fails to ack the reset, or that |
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does not have a valid 0x57,0x57 signature can still use this |
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without having to recompile. Specifying an i/o address along |
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with an otherwise unused dev->mem_end value of "0xBAD" will |
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cause the driver to skip these parts of the probe. */ |
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bad_card = ((dev->base_addr != 0) && (dev->mem_end == BAD)); |
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/* Reset card. Who knows what dain-bramaged state it was left in. */ |
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{ |
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unsigned long reset_start_time = jiffies; |
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/* DON'T change these to inb_p/outb_p or reset will fail on clones. */ |
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outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET); |
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while ((inb_p(ioaddr + EN0_ISR) & ENISR_RESET) == 0) |
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if (time_after(jiffies, reset_start_time + 2*HZ/100)) { |
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if (bad_card) { |
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pr_cont(" (warning: no reset ack)"); |
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break; |
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} else { |
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pr_cont(" not found (no reset ack).\n"); |
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ret = -ENODEV; |
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goto err_out; |
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} |
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} |
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outb_p(0xff, ioaddr + EN0_ISR); /* Ack all intr. */ |
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} |
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/* Read the 16 bytes of station address PROM. |
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We must first initialize registers, similar to NS8390p_init(eifdev, 0). |
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We can't reliably read the SAPROM address without this. |
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(I learned the hard way!). */ |
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{ |
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struct {unsigned char value, offset; } program_seq[] = |
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{ |
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{E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/ |
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{0x48, EN0_DCFG}, /* Set byte-wide (0x48) access. */ |
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{0x00, EN0_RCNTLO}, /* Clear the count regs. */ |
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{0x00, EN0_RCNTHI}, |
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{0x00, EN0_IMR}, /* Mask completion irq. */ |
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{0xFF, EN0_ISR}, |
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{E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */ |
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{E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */ |
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{32, EN0_RCNTLO}, |
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{0x00, EN0_RCNTHI}, |
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{0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */ |
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{0x00, EN0_RSARHI}, |
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{E8390_RREAD+E8390_START, E8390_CMD}, |
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}; |
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for (i = 0; i < ARRAY_SIZE(program_seq); i++) |
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outb_p(program_seq[i].value, ioaddr + program_seq[i].offset); |
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} |
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for(i = 0; i < 32 /*sizeof(SA_prom)*/; i+=2) { |
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SA_prom[i] = inb(ioaddr + NE_DATAPORT); |
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SA_prom[i+1] = inb(ioaddr + NE_DATAPORT); |
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if (SA_prom[i] != SA_prom[i+1]) |
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wordlength = 1; |
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} |
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|
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if (wordlength == 2) |
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{ |
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for (i = 0; i < 16; i++) |
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SA_prom[i] = SA_prom[i+i]; |
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/* We must set the 8390 for word mode. */ |
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outb_p(DCR_VAL, ioaddr + EN0_DCFG); |
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start_page = NESM_START_PG; |
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|
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/* |
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* Realtek RTL8019AS datasheet says that the PSTOP register |
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* shouldn't exceed 0x60 in 8-bit mode. |
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* This chip can be identified by reading the signature from |
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* the remote byte count registers (otherwise write-only)... |
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*/ |
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if ((DCR_VAL & 0x01) == 0 && /* 8-bit mode */ |
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inb(ioaddr + EN0_RCNTLO) == 0x50 && |
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inb(ioaddr + EN0_RCNTHI) == 0x70) |
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stop_page = 0x60; |
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else |
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stop_page = NESM_STOP_PG; |
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} else { |
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start_page = NE1SM_START_PG; |
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stop_page = NE1SM_STOP_PG; |
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} |
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neX000 = (SA_prom[14] == 0x57 && SA_prom[15] == 0x57); |
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ctron = (SA_prom[0] == 0x00 && SA_prom[1] == 0x00 && SA_prom[2] == 0x1d); |
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copam = (SA_prom[14] == 0x49 && SA_prom[15] == 0x00); |
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|
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/* Set up the rest of the parameters. */ |
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if (neX000 || bad_card || copam) { |
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name = (wordlength == 2) ? "NE2000" : "NE1000"; |
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} |
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else if (ctron) |
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{ |
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name = (wordlength == 2) ? "Ctron-8" : "Ctron-16"; |
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start_page = 0x01; |
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stop_page = (wordlength == 2) ? 0x40 : 0x20; |
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} |
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else |
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{ |
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#ifdef SUPPORT_NE_BAD_CLONES |
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/* Ack! Well, there might be a *bad* NE*000 clone there. |
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Check for total bogus addresses. */ |
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for (i = 0; bad_clone_list[i].name8; i++) |
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{ |
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if (SA_prom[0] == bad_clone_list[i].SAprefix[0] && |
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SA_prom[1] == bad_clone_list[i].SAprefix[1] && |
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SA_prom[2] == bad_clone_list[i].SAprefix[2]) |
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{ |
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if (wordlength == 2) |
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{ |
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name = bad_clone_list[i].name16; |
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} else { |
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name = bad_clone_list[i].name8; |
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} |
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break; |
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} |
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} |
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if (bad_clone_list[i].name8 == NULL) |
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{ |
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pr_cont(" not found (invalid signature %2.2x %2.2x).\n", |
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SA_prom[14], SA_prom[15]); |
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ret = -ENXIO; |
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goto err_out; |
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} |
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#else |
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pr_cont(" not found.\n"); |
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ret = -ENXIO; |
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goto err_out; |
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#endif |
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} |
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|
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if (dev->irq < 2) |
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{ |
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unsigned long cookie = probe_irq_on(); |
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outb_p(0x50, ioaddr + EN0_IMR); /* Enable one interrupt. */ |
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outb_p(0x00, ioaddr + EN0_RCNTLO); |
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outb_p(0x00, ioaddr + EN0_RCNTHI); |
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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; |
|
|
|
for (i = 0; i < ETH_ALEN; i++) { |
|
dev->dev_addr[i] = SA_prom[i]; |
|
} |
|
|
|
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 NE_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);
|
|
|