forked from Minki/linux
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
509 lines
15 KiB
C
509 lines
15 KiB
C
/* smc-mca.c: A SMC Ultra ethernet driver for linux. */
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/*
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Most of this driver, except for ultramca_probe is nearly
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verbatim from smc-ultra.c by Donald Becker. The rest is
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written and copyright 1996 by David Weis, weisd3458@uni.edu
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This is a driver for the SMC Ultra and SMC EtherEZ ethercards.
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This driver uses the cards in the 8390-compatible, shared memory mode.
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Most of the run-time complexity is handled by the generic code in
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8390.c.
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This driver enables the shared memory only when doing the actual data
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transfers to avoid a bug in early version of the card that corrupted
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data transferred by a AHA1542.
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This driver does not support the programmed-I/O data transfer mode of
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the EtherEZ. That support (if available) is smc-ez.c. Nor does it
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use the non-8390-compatible "Altego" mode. (No support currently planned.)
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Changelog:
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Paul Gortmaker : multiple card support for module users.
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David Weis : Micro Channel-ized it.
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Tom Sightler : Added support for IBM PS/2 Ethernet Adapter/A
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Christopher Turcksin : Changed MCA-probe so that multiple adapters are
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found correctly (Jul 16, 1997)
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Chris Beauregard : Tried to merge the two changes above (Dec 15, 1997)
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Tom Sightler : Fixed minor detection bug caused by above merge
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Tom Sightler : Added support for three more Western Digital
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MCA-adapters
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Tom Sightler : Added support for 2.2.x mca_find_unused_adapter
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Hartmut Schmidt : - Modified parameter detection to handle each
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card differently depending on a switch-list
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- 'card_ver' removed from the adapter list
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- Some minor bug fixes
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*/
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#include <linux/mca.h>
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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/string.h>
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#include <linux/init.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <asm/io.h>
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#include <asm/system.h>
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#include "8390.h"
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#include "smc-mca.h"
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#define DRV_NAME "smc-mca"
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static int ultramca_open(struct net_device *dev);
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static void ultramca_reset_8390(struct net_device *dev);
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static void ultramca_get_8390_hdr(struct net_device *dev,
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struct e8390_pkt_hdr *hdr,
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int ring_page);
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static void ultramca_block_input(struct net_device *dev, int count,
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struct sk_buff *skb,
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int ring_offset);
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static void ultramca_block_output(struct net_device *dev, int count,
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const unsigned char *buf,
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const int start_page);
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static int ultramca_close_card(struct net_device *dev);
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#define START_PG 0x00 /* First page of TX buffer */
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#define ULTRA_CMDREG 0 /* Offset to ASIC command register. */
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#define ULTRA_RESET 0x80 /* Board reset, in ULTRA_CMDREG. */
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#define ULTRA_MEMENB 0x40 /* Enable the shared memory. */
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#define ULTRA_NIC_OFFSET 16 /* NIC register offset from the base_addr. */
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#define ULTRA_IO_EXTENT 32
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#define EN0_ERWCNT 0x08 /* Early receive warning count. */
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#define _61c8_SMC_Ethercard_PLUS_Elite_A_BNC_AUI_WD8013EP_A 0
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#define _61c9_SMC_Ethercard_PLUS_Elite_A_UTP_AUI_WD8013EP_A 1
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#define _6fc0_WD_Ethercard_PLUS_A_WD8003E_A_OR_WD8003ET_A 2
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#define _6fc1_WD_Starcard_PLUS_A_WD8003ST_A 3
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#define _6fc2_WD_Ethercard_PLUS_10T_A_WD8003W_A 4
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#define _efd4_IBM_PS2_Adapter_A_for_Ethernet_UTP_AUI_WD8013WP_A 5
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#define _efd5_IBM_PS2_Adapter_A_for_Ethernet_BNC_AUI_WD8013WP_A 6
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#define _efe5_IBM_PS2_Adapter_A_for_Ethernet 7
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struct smc_mca_adapters_t {
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unsigned int id;
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char *name;
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};
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#define MAX_ULTRAMCA_CARDS 4 /* Max number of Ultra cards per module */
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static int ultra_io[MAX_ULTRAMCA_CARDS];
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static int ultra_irq[MAX_ULTRAMCA_CARDS];
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MODULE_LICENSE("GPL");
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module_param_array(ultra_io, int, NULL, 0);
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module_param_array(ultra_irq, int, NULL, 0);
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MODULE_PARM_DESC(ultra_io, "SMC Ultra/EtherEZ MCA I/O base address(es)");
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MODULE_PARM_DESC(ultra_irq, "SMC Ultra/EtherEZ MCA IRQ number(s)");
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static short smc_mca_adapter_ids[] __initdata = {
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0x61c8,
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0x61c9,
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0x6fc0,
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0x6fc1,
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0x6fc2,
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0xefd4,
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0xefd5,
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0xefe5,
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0x0000
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};
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static char *smc_mca_adapter_names[] __initdata = {
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"SMC Ethercard PLUS Elite/A BNC/AUI (WD8013EP/A)",
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"SMC Ethercard PLUS Elite/A UTP/AUI (WD8013WP/A)",
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"WD Ethercard PLUS/A (WD8003E/A or WD8003ET/A)",
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"WD Starcard PLUS/A (WD8003ST/A)",
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"WD Ethercard PLUS 10T/A (WD8003W/A)",
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"IBM PS/2 Adapter/A for Ethernet UTP/AUI (WD8013WP/A)",
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"IBM PS/2 Adapter/A for Ethernet BNC/AUI (WD8013EP/A)",
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"IBM PS/2 Adapter/A for Ethernet",
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NULL
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};
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static int ultra_found = 0;
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int __init ultramca_probe(struct device *gen_dev)
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{
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unsigned short ioaddr;
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struct net_device *dev;
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unsigned char reg4, num_pages;
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struct mca_device *mca_dev = to_mca_device(gen_dev);
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char slot = mca_dev->slot;
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unsigned char pos2 = 0xff, pos3 = 0xff, pos4 = 0xff, pos5 = 0xff;
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int i, rc;
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int adapter = mca_dev->index;
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int tbase = 0;
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int tirq = 0;
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int base_addr = ultra_io[ultra_found];
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int irq = ultra_irq[ultra_found];
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if (base_addr || irq) {
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printk(KERN_INFO "Probing for SMC MCA adapter");
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if (base_addr) {
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printk(KERN_INFO " at I/O address 0x%04x%c",
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base_addr, irq ? ' ' : '\n');
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}
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if (irq) {
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printk(KERN_INFO "using irq %d\n", irq);
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}
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}
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tirq = 0;
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tbase = 0;
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/* If we're trying to match a specificied irq or io address,
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* we'll reject the adapter found unless it's the one we're
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* looking for */
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pos2 = mca_device_read_stored_pos(mca_dev, 2); /* io_addr */
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pos3 = mca_device_read_stored_pos(mca_dev, 3); /* shared mem */
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pos4 = mca_device_read_stored_pos(mca_dev, 4); /* ROM bios addr range */
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pos5 = mca_device_read_stored_pos(mca_dev, 5); /* irq, media and RIPL */
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/* Test the following conditions:
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* - If an irq parameter is supplied, compare it
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* with the irq of the adapter we found
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* - If a base_addr paramater is given, compare it
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* with the base_addr of the adapter we found
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* - Check that the irq and the base_addr of the
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* adapter we found is not already in use by
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* this driver
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*/
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switch (mca_dev->index) {
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case _61c8_SMC_Ethercard_PLUS_Elite_A_BNC_AUI_WD8013EP_A:
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case _61c9_SMC_Ethercard_PLUS_Elite_A_UTP_AUI_WD8013EP_A:
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case _efd4_IBM_PS2_Adapter_A_for_Ethernet_UTP_AUI_WD8013WP_A:
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case _efd5_IBM_PS2_Adapter_A_for_Ethernet_BNC_AUI_WD8013WP_A:
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{
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tbase = addr_table[(pos2 & 0xf0) >> 4].base_addr;
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tirq = irq_table[(pos5 & 0xc) >> 2].new_irq;
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break;
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}
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case _6fc0_WD_Ethercard_PLUS_A_WD8003E_A_OR_WD8003ET_A:
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case _6fc1_WD_Starcard_PLUS_A_WD8003ST_A:
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case _6fc2_WD_Ethercard_PLUS_10T_A_WD8003W_A:
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case _efe5_IBM_PS2_Adapter_A_for_Ethernet:
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{
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tbase = ((pos2 & 0x0fe) * 0x10);
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tirq = irq_table[(pos5 & 3)].old_irq;
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break;
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}
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}
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if(!tirq || !tbase
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|| (irq && irq != tirq)
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|| (base_addr && tbase != base_addr))
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/* FIXME: we're trying to force the ordering of the
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* devices here, there should be a way of getting this
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* to happen */
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return -ENXIO;
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/* Adapter found. */
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dev = alloc_ei_netdev();
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if(!dev)
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return -ENODEV;
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SET_MODULE_OWNER(dev);
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SET_NETDEV_DEV(dev, gen_dev);
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mca_device_set_name(mca_dev, smc_mca_adapter_names[adapter]);
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mca_device_set_claim(mca_dev, 1);
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printk(KERN_INFO "smc_mca: %s found in slot %d\n",
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smc_mca_adapter_names[adapter], slot + 1);
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ultra_found++;
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dev->base_addr = ioaddr = mca_device_transform_ioport(mca_dev, tbase);
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dev->irq = mca_device_transform_irq(mca_dev, tirq);
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dev->mem_start = 0;
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num_pages = 40;
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switch (adapter) { /* card-# in const array above [hs] */
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case _61c8_SMC_Ethercard_PLUS_Elite_A_BNC_AUI_WD8013EP_A:
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case _61c9_SMC_Ethercard_PLUS_Elite_A_UTP_AUI_WD8013EP_A:
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{
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for (i = 0; i < 16; i++) { /* taking 16 counts
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* up to 15 [hs] */
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if (mem_table[i].mem_index == (pos3 & ~MEM_MASK)) {
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dev->mem_start = (unsigned long)
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mca_device_transform_memory(mca_dev, (void *)mem_table[i].mem_start);
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num_pages = mem_table[i].num_pages;
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}
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}
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break;
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}
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case _6fc0_WD_Ethercard_PLUS_A_WD8003E_A_OR_WD8003ET_A:
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case _6fc1_WD_Starcard_PLUS_A_WD8003ST_A:
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case _6fc2_WD_Ethercard_PLUS_10T_A_WD8003W_A:
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case _efe5_IBM_PS2_Adapter_A_for_Ethernet:
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{
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dev->mem_start = (unsigned long)
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mca_device_transform_memory(mca_dev, (void *)((pos3 & 0xfc) * 0x1000));
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num_pages = 0x40;
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break;
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}
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case _efd4_IBM_PS2_Adapter_A_for_Ethernet_UTP_AUI_WD8013WP_A:
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case _efd5_IBM_PS2_Adapter_A_for_Ethernet_BNC_AUI_WD8013WP_A:
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{
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/* courtesy of gamera@quartz.ocn.ne.jp, pos3 indicates
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* the index of the 0x2000 step.
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* beware different number of pages [hs]
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*/
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dev->mem_start = (unsigned long)
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mca_device_transform_memory(mca_dev, (void *)(0xc0000 + (0x2000 * (pos3 & 0xf))));
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num_pages = 0x20 + (2 * (pos3 & 0x10));
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break;
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}
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}
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/* sanity check, shouldn't happen */
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if (dev->mem_start == 0) {
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rc = -ENODEV;
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goto err_unclaim;
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}
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if (!request_region(ioaddr, ULTRA_IO_EXTENT, DRV_NAME)) {
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rc = -ENODEV;
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goto err_unclaim;
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}
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reg4 = inb(ioaddr + 4) & 0x7f;
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outb(reg4, ioaddr + 4);
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printk(KERN_INFO "smc_mca[%d]: Parameters: %#3x,", slot + 1, ioaddr);
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for (i = 0; i < 6; i++)
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printk(" %2.2X", dev->dev_addr[i] = inb(ioaddr + 8 + i));
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/* Switch from the station address to the alternate register set
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* and read the useful registers there.
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*/
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outb(0x80 | reg4, ioaddr + 4);
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/* Enable FINE16 mode to avoid BIOS ROM width mismatches @ reboot.
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*/
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outb(0x80 | inb(ioaddr + 0x0c), ioaddr + 0x0c);
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/* Switch back to the station address register set so that
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* the MS-DOS driver can find the card after a warm boot.
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*/
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outb(reg4, ioaddr + 4);
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gen_dev->driver_data = dev;
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/* The 8390 isn't at the base address, so fake the offset
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*/
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dev->base_addr = ioaddr + ULTRA_NIC_OFFSET;
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ei_status.name = "SMC Ultra MCA";
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ei_status.word16 = 1;
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ei_status.tx_start_page = START_PG;
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ei_status.rx_start_page = START_PG + TX_PAGES;
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ei_status.stop_page = num_pages;
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ei_status.mem = ioremap(dev->mem_start, (ei_status.stop_page - START_PG) * 256);
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if (!ei_status.mem) {
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rc = -ENOMEM;
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goto err_release_region;
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}
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dev->mem_end = dev->mem_start + (ei_status.stop_page - START_PG) * 256;
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printk(", IRQ %d memory %#lx-%#lx.\n",
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dev->irq, dev->mem_start, dev->mem_end - 1);
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ei_status.reset_8390 = &ultramca_reset_8390;
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ei_status.block_input = &ultramca_block_input;
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ei_status.block_output = &ultramca_block_output;
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ei_status.get_8390_hdr = &ultramca_get_8390_hdr;
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ei_status.priv = slot;
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dev->open = &ultramca_open;
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dev->stop = &ultramca_close_card;
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#ifdef CONFIG_NET_POLL_CONTROLLER
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dev->poll_controller = ei_poll;
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#endif
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NS8390_init(dev, 0);
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rc = register_netdev(dev);
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if (rc)
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goto err_unmap;
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return 0;
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err_unmap:
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iounmap(ei_status.mem);
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err_release_region:
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release_region(ioaddr, ULTRA_IO_EXTENT);
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err_unclaim:
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mca_device_set_claim(mca_dev, 0);
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free_netdev(dev);
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return rc;
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}
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static int ultramca_open(struct net_device *dev)
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{
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int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */
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int retval;
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if ((retval = request_irq(dev->irq, ei_interrupt, 0, dev->name, dev)))
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return retval;
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outb(ULTRA_MEMENB, ioaddr); /* Enable memory */
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outb(0x80, ioaddr + 5); /* ??? */
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outb(0x01, ioaddr + 6); /* Enable interrupts and memory. */
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outb(0x04, ioaddr + 5); /* ??? */
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/* Set the early receive warning level in window 0 high enough not
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* to receive ERW interrupts.
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*/
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/* outb_p(E8390_NODMA + E8390_PAGE0, dev->base_addr);
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* outb(0xff, dev->base_addr + EN0_ERWCNT);
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*/
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ei_open(dev);
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return 0;
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}
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static void ultramca_reset_8390(struct net_device *dev)
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{
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int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */
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outb(ULTRA_RESET, ioaddr);
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if (ei_debug > 1)
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printk("resetting Ultra, t=%ld...", jiffies);
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ei_status.txing = 0;
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outb(0x80, ioaddr + 5); /* ??? */
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outb(0x01, ioaddr + 6); /* Enable interrupts and memory. */
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if (ei_debug > 1)
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printk("reset done\n");
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return;
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}
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/* Grab the 8390 specific header. Similar to the block_input routine, but
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* we don't need to be concerned with ring wrap as the header will be at
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* the start of a page, so we optimize accordingly.
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*/
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static void ultramca_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
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{
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void __iomem *hdr_start = ei_status.mem + ((ring_page - START_PG) << 8);
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#ifdef notdef
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/* Officially this is what we are doing, but the readl() is faster */
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memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
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#else
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((unsigned int*)hdr)[0] = readl(hdr_start);
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#endif
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}
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/* Block input and output are easy on shared memory ethercards, the only
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* complication is when the ring buffer wraps.
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*/
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static void ultramca_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
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{
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void __iomem *xfer_start = ei_status.mem + ring_offset - START_PG * 256;
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if (ring_offset + count > ei_status.stop_page * 256) {
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/* We must wrap the input move. */
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int semi_count = ei_status.stop_page * 256 - ring_offset;
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memcpy_fromio(skb->data, xfer_start, semi_count);
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count -= semi_count;
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memcpy_fromio(skb->data + semi_count, ei_status.mem + TX_PAGES * 256, count);
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} else {
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/* Packet is in one chunk -- we can copy + cksum. */
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eth_io_copy_and_sum(skb, xfer_start, count, 0);
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}
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}
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static void ultramca_block_output(struct net_device *dev, int count, const unsigned char *buf,
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int start_page)
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{
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void __iomem *shmem = ei_status.mem + ((start_page - START_PG) << 8);
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memcpy_toio(shmem, buf, count);
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}
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static int ultramca_close_card(struct net_device *dev)
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{
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|
int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */
|
|
|
|
netif_stop_queue(dev);
|
|
|
|
if (ei_debug > 1)
|
|
printk("%s: Shutting down ethercard.\n", dev->name);
|
|
|
|
outb(0x00, ioaddr + 6); /* Disable interrupts. */
|
|
free_irq(dev->irq, dev);
|
|
|
|
NS8390_init(dev, 0);
|
|
/* We should someday disable shared memory and change to 8-bit mode
|
|
* "just in case"...
|
|
*/
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ultramca_remove(struct device *gen_dev)
|
|
{
|
|
struct mca_device *mca_dev = to_mca_device(gen_dev);
|
|
struct net_device *dev = (struct net_device *)gen_dev->driver_data;
|
|
|
|
if (dev) {
|
|
/* NB: ultra_close_card() does free_irq */
|
|
int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET;
|
|
|
|
unregister_netdev(dev);
|
|
mca_device_set_claim(mca_dev, 0);
|
|
release_region(ioaddr, ULTRA_IO_EXTENT);
|
|
iounmap(ei_status.mem);
|
|
free_netdev(dev);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
static struct mca_driver ultra_driver = {
|
|
.id_table = smc_mca_adapter_ids,
|
|
.driver = {
|
|
.name = "smc-mca",
|
|
.bus = &mca_bus_type,
|
|
.probe = ultramca_probe,
|
|
.remove = ultramca_remove,
|
|
}
|
|
};
|
|
|
|
static int __init ultramca_init_module(void)
|
|
{
|
|
if(!MCA_bus)
|
|
return -ENXIO;
|
|
|
|
mca_register_driver(&ultra_driver);
|
|
|
|
return ultra_found ? 0 : -ENXIO;
|
|
}
|
|
|
|
static void __exit ultramca_cleanup_module(void)
|
|
{
|
|
mca_unregister_driver(&ultra_driver);
|
|
}
|
|
module_init(ultramca_init_module);
|
|
module_exit(ultramca_cleanup_module);
|
|
|