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Diffstat (limited to 'drivers/net/mac8390.c')
-rw-r--r--drivers/net/mac8390.c757
1 files changed, 757 insertions, 0 deletions
diff --git a/drivers/net/mac8390.c b/drivers/net/mac8390.c
new file mode 100644
index 000000000000..ce5761816a64
--- /dev/null
+++ b/drivers/net/mac8390.c
@@ -0,0 +1,757 @@
+/* mac8390.c: New driver for 8390-based Nubus (or Nubus-alike)
+ Ethernet cards on Linux */
+/* Based on the former daynaport.c driver, by Alan Cox. Some code
+ taken from or inspired by skeleton.c by Donald Becker, acenic.c by
+ Jes Sorensen, and ne2k-pci.c by Donald Becker and Paul Gortmaker.
+
+ This software may be used and distributed according to the terms of
+ the GNU Public License, incorporated herein by reference. */
+
+/* 2000-02-28: support added for Dayna and Kinetics cards by
+ A.G.deWijn@phys.uu.nl */
+/* 2000-04-04: support added for Dayna2 by bart@etpmod.phys.tue.nl */
+/* 2001-04-18: support for DaynaPort E/LC-M by rayk@knightsmanor.org */
+/* 2001-05-15: support for Cabletron ported from old daynaport driver
+ * and fixed access to Sonic Sys card which masquerades as a Farallon
+ * by rayk@knightsmanor.org */
+
+#include <linux/version.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/fcntl.h>
+#include <linux/interrupt.h>
+#include <linux/ptrace.h>
+#include <linux/ioport.h>
+#include <linux/nubus.h>
+#include <linux/in.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/bitops.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/dma.h>
+#include <asm/hwtest.h>
+#include <asm/macints.h>
+
+#include "8390.h"
+
+#define WD_START_PG 0x00 /* First page of TX buffer */
+#define CABLETRON_RX_START_PG 0x00 /* First page of RX buffer */
+#define CABLETRON_RX_STOP_PG 0x30 /* Last page +1 of RX ring */
+#define CABLETRON_TX_START_PG CABLETRON_RX_STOP_PG /* First page of TX buffer */
+
+/* Unfortunately it seems we have to hardcode these for the moment */
+/* Shouldn't the card know about this? Does anyone know where to read it off the card? Do we trust the data provided by the card? */
+
+#define DAYNA_8390_BASE 0x80000
+#define DAYNA_8390_MEM 0x00000
+
+#define KINETICS_8390_BASE 0x80000
+#define KINETICS_8390_MEM 0x00000
+
+#define CABLETRON_8390_BASE 0x90000
+#define CABLETRON_8390_MEM 0x00000
+
+enum mac8390_type {
+ MAC8390_NONE = -1,
+ MAC8390_APPLE,
+ MAC8390_ASANTE,
+ MAC8390_FARALLON, /* Apple, Asante, and Farallon are all compatible */
+ MAC8390_CABLETRON,
+ MAC8390_DAYNA,
+ MAC8390_INTERLAN,
+ MAC8390_KINETICS,
+ MAC8390_FOCUS,
+ MAC8390_SONICSYS,
+ MAC8390_DAYNA2,
+ MAC8390_DAYNA3,
+};
+
+static const char * cardname[] = {
+ "apple",
+ "asante",
+ "farallon",
+ "cabletron",
+ "dayna",
+ "interlan",
+ "kinetics",
+ "focus",
+ "sonic systems",
+ "dayna2",
+ "dayna_lc",
+};
+
+static int word16[] = {
+ 1, /* apple */
+ 1, /* asante */
+ 1, /* farallon */
+ 1, /* cabletron */
+ 0, /* dayna */
+ 1, /* interlan */
+ 0, /* kinetics */
+ 1, /* focus (??) */
+ 1, /* sonic systems */
+ 1, /* dayna2 */
+ 1, /* dayna-lc */
+};
+
+/* on which cards do we use NuBus resources? */
+static int useresources[] = {
+ 1, /* apple */
+ 1, /* asante */
+ 1, /* farallon */
+ 0, /* cabletron */
+ 0, /* dayna */
+ 0, /* interlan */
+ 0, /* kinetics */
+ 0, /* focus (??) */
+ 1, /* sonic systems */
+ 1, /* dayna2 */
+ 1, /* dayna-lc */
+};
+
+static char version[] __initdata =
+ "mac8390.c: v0.4 2001-05-15 David Huggins-Daines <dhd@debian.org> and others\n";
+
+extern enum mac8390_type mac8390_ident(struct nubus_dev * dev);
+extern int mac8390_memsize(unsigned long membase);
+extern int mac8390_memtest(struct net_device * dev);
+static int mac8390_initdev(struct net_device * dev, struct nubus_dev * ndev,
+ enum mac8390_type type);
+
+static int mac8390_open(struct net_device * dev);
+static int mac8390_close(struct net_device * dev);
+static void mac8390_no_reset(struct net_device *dev);
+
+/* Sane (32-bit chunk memory read/write) - Apple/Asante/Farallon do this*/
+static void sane_get_8390_hdr(struct net_device *dev,
+ struct e8390_pkt_hdr *hdr, int ring_page);
+static void sane_block_input(struct net_device * dev, int count,
+ struct sk_buff * skb, int ring_offset);
+static void sane_block_output(struct net_device * dev, int count,
+ const unsigned char * buf, const int start_page);
+
+/* dayna_memcpy to and from card */
+static void dayna_memcpy_fromcard(struct net_device *dev, void *to,
+ int from, int count);
+static void dayna_memcpy_tocard(struct net_device *dev, int to,
+ const void *from, int count);
+
+/* Dayna - Dayna/Kinetics use this */
+static void dayna_get_8390_hdr(struct net_device *dev,
+ struct e8390_pkt_hdr *hdr, int ring_page);
+static void dayna_block_input(struct net_device *dev, int count,
+ struct sk_buff *skb, int ring_offset);
+static void dayna_block_output(struct net_device *dev, int count,
+ const unsigned char *buf, int start_page);
+
+#define memcpy_fromio(a,b,c) memcpy((a),(void *)(b),(c))
+#define memcpy_toio(a,b,c) memcpy((void *)(a),(b),(c))
+
+/* Slow Sane (16-bit chunk memory read/write) Cabletron uses this */
+static void slow_sane_get_8390_hdr(struct net_device *dev,
+ struct e8390_pkt_hdr *hdr, int ring_page);
+static void slow_sane_block_input(struct net_device *dev, int count,
+ struct sk_buff *skb, int ring_offset);
+static void slow_sane_block_output(struct net_device *dev, int count,
+ const unsigned char *buf, int start_page);
+static void word_memcpy_tocard(void *tp, const void *fp, int count);
+static void word_memcpy_fromcard(void *tp, const void *fp, int count);
+
+enum mac8390_type __init mac8390_ident(struct nubus_dev * dev)
+{
+ if (dev->dr_sw == NUBUS_DRSW_ASANTE)
+ return MAC8390_ASANTE;
+ if (dev->dr_sw == NUBUS_DRSW_FARALLON)
+ return MAC8390_FARALLON;
+ if (dev->dr_sw == NUBUS_DRSW_KINETICS)
+ return MAC8390_KINETICS;
+ if (dev->dr_sw == NUBUS_DRSW_DAYNA)
+ return MAC8390_DAYNA;
+ if (dev->dr_sw == NUBUS_DRSW_DAYNA2)
+ return MAC8390_DAYNA2;
+ if (dev->dr_sw == NUBUS_DRSW_DAYNA_LC)
+ return MAC8390_DAYNA3;
+ if (dev->dr_hw == NUBUS_DRHW_CABLETRON)
+ return MAC8390_CABLETRON;
+ return MAC8390_NONE;
+}
+
+int __init mac8390_memsize(unsigned long membase)
+{
+ unsigned long flags;
+ int i, j;
+
+ local_irq_save(flags);
+ /* Check up to 32K in 4K increments */
+ for (i = 0; i < 8; i++) {
+ volatile unsigned short *m = (unsigned short *) (membase + (i * 0x1000));
+
+ /* Unwriteable - we have a fully decoded card and the
+ RAM end located */
+ if (hwreg_present(m) == 0)
+ break;
+
+ /* write a distinctive byte */
+ *m = 0xA5A0 | i;
+ /* check that we read back what we wrote */
+ if (*m != (0xA5A0 | i))
+ break;
+
+ /* check for partial decode and wrap */
+ for (j = 0; j < i; j++) {
+ volatile unsigned short *p = (unsigned short *) (membase + (j * 0x1000));
+ if (*p != (0xA5A0 | j))
+ break;
+ }
+ }
+ local_irq_restore(flags);
+ /* in any case, we stopped once we tried one block too many,
+ or once we reached 32K */
+ return i * 0x1000;
+}
+
+struct net_device * __init mac8390_probe(int unit)
+{
+ struct net_device *dev;
+ volatile unsigned short *i;
+ int version_disp = 0;
+ struct nubus_dev * ndev = NULL;
+ int err = -ENODEV;
+
+ struct nubus_dir dir;
+ struct nubus_dirent ent;
+ int offset;
+ static unsigned int slots;
+
+ enum mac8390_type cardtype;
+
+ /* probably should check for Nubus instead */
+
+ if (!MACH_IS_MAC)
+ return ERR_PTR(-ENODEV);
+
+ dev = alloc_ei_netdev();
+ if (!dev)
+ return ERR_PTR(-ENOMEM);
+
+ if (unit >= 0)
+ sprintf(dev->name, "eth%d", unit);
+
+ SET_MODULE_OWNER(dev);
+
+ while ((ndev = nubus_find_type(NUBUS_CAT_NETWORK, NUBUS_TYPE_ETHERNET, ndev))) {
+ /* Have we seen it already? */
+ if (slots & (1<<ndev->board->slot))
+ continue;
+ slots |= 1<<ndev->board->slot;
+
+ if ((cardtype = mac8390_ident(ndev)) == MAC8390_NONE)
+ continue;
+
+ if (version_disp == 0) {
+ version_disp = 1;
+ printk(version);
+ }
+
+ dev->irq = SLOT2IRQ(ndev->board->slot);
+ /* This is getting to be a habit */
+ dev->base_addr = ndev->board->slot_addr | ((ndev->board->slot&0xf) << 20);
+
+ /* Get some Nubus info - we will trust the card's idea
+ of where its memory and registers are. */
+
+ if (nubus_get_func_dir(ndev, &dir) == -1) {
+ printk(KERN_ERR "%s: Unable to get Nubus functional"
+ " directory for slot %X!\n",
+ dev->name, ndev->board->slot);
+ continue;
+ }
+
+ /* Get the MAC address */
+ if ((nubus_find_rsrc(&dir, NUBUS_RESID_MAC_ADDRESS, &ent)) == -1) {
+ printk(KERN_INFO "%s: Couldn't get MAC address!\n",
+ dev->name);
+ continue;
+ } else {
+ nubus_get_rsrc_mem(dev->dev_addr, &ent, 6);
+ /* Some Sonic Sys cards masquerade as Farallon */
+ if (cardtype == MAC8390_FARALLON &&
+ dev->dev_addr[0] == 0x0 &&
+ dev->dev_addr[1] == 0x40 &&
+ dev->dev_addr[2] == 0x10) {
+ /* This is really Sonic Sys card */
+ cardtype = MAC8390_SONICSYS;
+ }
+ }
+
+ if (useresources[cardtype] == 1) {
+ nubus_rewinddir(&dir);
+ if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_BASEOS, &ent) == -1) {
+ printk(KERN_ERR "%s: Memory offset resource"
+ " for slot %X not found!\n",
+ dev->name, ndev->board->slot);
+ continue;
+ }
+ nubus_get_rsrc_mem(&offset, &ent, 4);
+ dev->mem_start = dev->base_addr + offset;
+ /* yes, this is how the Apple driver does it */
+ dev->base_addr = dev->mem_start + 0x10000;
+ nubus_rewinddir(&dir);
+ if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_LENGTH, &ent) == -1) {
+ printk(KERN_INFO "%s: Memory length resource"
+ " for slot %X not found"
+ ", probing\n",
+ dev->name, ndev->board->slot);
+ offset = mac8390_memsize(dev->mem_start);
+ } else {
+ nubus_get_rsrc_mem(&offset, &ent, 4);
+ }
+ dev->mem_end = dev->mem_start + offset;
+ } else {
+ switch (cardtype) {
+ case MAC8390_KINETICS:
+ case MAC8390_DAYNA: /* it's the same */
+ dev->base_addr =
+ (int)(ndev->board->slot_addr +
+ DAYNA_8390_BASE);
+ dev->mem_start =
+ (int)(ndev->board->slot_addr +
+ DAYNA_8390_MEM);
+ dev->mem_end =
+ dev->mem_start +
+ mac8390_memsize(dev->mem_start);
+ break;
+ case MAC8390_CABLETRON:
+ dev->base_addr =
+ (int)(ndev->board->slot_addr +
+ CABLETRON_8390_BASE);
+ dev->mem_start =
+ (int)(ndev->board->slot_addr +
+ CABLETRON_8390_MEM);
+ /* The base address is unreadable if 0x00
+ * has been written to the command register
+ * Reset the chip by writing E8390_NODMA +
+ * E8390_PAGE0 + E8390_STOP just to be
+ * sure
+ */
+ i = (void *)dev->base_addr;
+ *i = 0x21;
+ dev->mem_end =
+ dev->mem_start +
+ mac8390_memsize(dev->mem_start);
+ break;
+
+ default:
+ printk(KERN_ERR "Card type %s is"
+ " unsupported, sorry\n",
+ cardname[cardtype]);
+ continue;
+ }
+ }
+
+ /* Do the nasty 8390 stuff */
+ if (!mac8390_initdev(dev, ndev, cardtype))
+ break;
+ }
+
+ if (!ndev)
+ goto out;
+ err = register_netdev(dev);
+ if (err)
+ goto out;
+ return dev;
+
+out:
+ free_netdev(dev);
+ return ERR_PTR(err);
+}
+
+#ifdef MODULE
+MODULE_AUTHOR("David Huggins-Daines <dhd@debian.org> and others");
+MODULE_DESCRIPTION("Macintosh NS8390-based Nubus Ethernet driver");
+MODULE_LICENSE("GPL");
+
+/* overkill, of course */
+static struct net_device *dev_mac8390[15];
+int init_module(void)
+{
+ int i;
+ for (i = 0; i < 15; i++) {
+ struct net_device *dev = mac8390_probe(-1);
+ if (IS_ERR(dev))
+ break;
+ dev_mac890[i] = dev;
+ }
+ if (!i) {
+ printk(KERN_NOTICE "mac8390.c: No useable cards found, driver NOT installed.\n");
+ return -ENODEV;
+ }
+ return 0;
+}
+
+void cleanup_module(void)
+{
+ int i;
+ for (i = 0; i < 15; i++) {
+ struct net_device *dev = dev_mac890[i];
+ if (dev) {
+ unregister_netdev(dev);
+ free_netdev(dev);
+ }
+ }
+}
+
+#endif /* MODULE */
+
+static int __init mac8390_initdev(struct net_device * dev, struct nubus_dev * ndev,
+ enum mac8390_type type)
+{
+ static u32 fwrd4_offsets[16]={
+ 0, 4, 8, 12,
+ 16, 20, 24, 28,
+ 32, 36, 40, 44,
+ 48, 52, 56, 60
+ };
+ static u32 back4_offsets[16]={
+ 60, 56, 52, 48,
+ 44, 40, 36, 32,
+ 28, 24, 20, 16,
+ 12, 8, 4, 0
+ };
+ static u32 fwrd2_offsets[16]={
+ 0, 2, 4, 6,
+ 8, 10, 12, 14,
+ 16, 18, 20, 22,
+ 24, 26, 28, 30
+ };
+
+ int access_bitmode;
+
+ /* Now fill in our stuff */
+ dev->open = &mac8390_open;
+ dev->stop = &mac8390_close;
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ dev->poll_controller = ei_poll;
+#endif
+
+ /* GAR, ei_status is actually a macro even though it looks global */
+ ei_status.name = cardname[type];
+ ei_status.word16 = word16[type];
+
+ /* Cabletron's TX/RX buffers are backwards */
+ if (type == MAC8390_CABLETRON) {
+ ei_status.tx_start_page = CABLETRON_TX_START_PG;
+ ei_status.rx_start_page = CABLETRON_RX_START_PG;
+ ei_status.stop_page = CABLETRON_RX_STOP_PG;
+ ei_status.rmem_start = dev->mem_start;
+ ei_status.rmem_end = dev->mem_start + CABLETRON_RX_STOP_PG*256;
+ } else {
+ ei_status.tx_start_page = WD_START_PG;
+ ei_status.rx_start_page = WD_START_PG + TX_PAGES;
+ ei_status.stop_page = (dev->mem_end - dev->mem_start)/256;
+ ei_status.rmem_start = dev->mem_start + TX_PAGES*256;
+ ei_status.rmem_end = dev->mem_end;
+ }
+
+ /* Fill in model-specific information and functions */
+ switch(type) {
+ case MAC8390_SONICSYS:
+ /* 16 bit card, register map is reversed */
+ ei_status.reset_8390 = &mac8390_no_reset;
+ ei_status.block_input = &slow_sane_block_input;
+ ei_status.block_output = &slow_sane_block_output;
+ ei_status.get_8390_hdr = &slow_sane_get_8390_hdr;
+ ei_status.reg_offset = back4_offsets;
+ access_bitmode = 0;
+ break;
+ case MAC8390_FARALLON:
+ case MAC8390_APPLE:
+ case MAC8390_ASANTE:
+ case MAC8390_DAYNA2:
+ case MAC8390_DAYNA3:
+ /* 32 bit card, register map is reversed */
+ /* sane */
+ ei_status.reset_8390 = &mac8390_no_reset;
+ ei_status.block_input = &sane_block_input;
+ ei_status.block_output = &sane_block_output;
+ ei_status.get_8390_hdr = &sane_get_8390_hdr;
+ ei_status.reg_offset = back4_offsets;
+ access_bitmode = 1;
+ break;
+ case MAC8390_CABLETRON:
+ /* 16 bit card, register map is short forward */
+ ei_status.reset_8390 = &mac8390_no_reset;
+ ei_status.block_input = &slow_sane_block_input;
+ ei_status.block_output = &slow_sane_block_output;
+ ei_status.get_8390_hdr = &slow_sane_get_8390_hdr;
+ ei_status.reg_offset = fwrd2_offsets;
+ access_bitmode = 0;
+ break;
+ case MAC8390_DAYNA:
+ case MAC8390_KINETICS:
+ /* 16 bit memory */
+ /* dayna and similar */
+ ei_status.reset_8390 = &mac8390_no_reset;
+ ei_status.block_input = &dayna_block_input;
+ ei_status.block_output = &dayna_block_output;
+ ei_status.get_8390_hdr = &dayna_get_8390_hdr;
+ ei_status.reg_offset = fwrd4_offsets;
+ access_bitmode = 0;
+ break;
+ default:
+ printk(KERN_ERR "Card type %s is unsupported, sorry\n", cardname[type]);
+ return -ENODEV;
+ }
+
+ NS8390_init(dev, 0);
+
+ /* Good, done, now spit out some messages */
+ printk(KERN_INFO "%s: %s in slot %X (type %s)\n",
+ dev->name, ndev->board->name, ndev->board->slot, cardname[type]);
+ printk(KERN_INFO "MAC ");
+ {
+ int i;
+ for (i = 0; i < 6; i++) {
+ printk("%2.2x", dev->dev_addr[i]);
+ if (i < 5)
+ printk(":");
+ }
+ }
+ printk(" IRQ %d, shared memory at %#lx-%#lx, %d-bit access.\n",
+ dev->irq, dev->mem_start, dev->mem_end-1,
+ access_bitmode?32:16);
+ return 0;
+}
+
+static int mac8390_open(struct net_device *dev)
+{
+ ei_open(dev);
+ if (request_irq(dev->irq, ei_interrupt, 0, "8390 Ethernet", dev)) {
+ printk ("%s: unable to get IRQ %d.\n", dev->name, dev->irq);
+ return -EAGAIN;
+ }
+ return 0;
+}
+
+static int mac8390_close(struct net_device *dev)
+{
+ free_irq(dev->irq, dev);
+ ei_close(dev);
+ return 0;
+}
+
+static void mac8390_no_reset(struct net_device *dev)
+{
+ ei_status.txing = 0;
+ if (ei_debug > 1)
+ printk("reset not supported\n");
+ return;
+}
+
+/* dayna_memcpy_fromio/dayna_memcpy_toio */
+/* directly from daynaport.c by Alan Cox */
+static void dayna_memcpy_fromcard(struct net_device *dev, void *to, int from, int count)
+{
+ volatile unsigned short *ptr;
+ unsigned short *target=to;
+ from<<=1; /* word, skip overhead */
+ ptr=(unsigned short *)(dev->mem_start+from);
+ /* Leading byte? */
+ if (from&2) {
+ *((char *)target)++ = *(((char *)ptr++)-1);
+ count--;
+ }
+ while(count>=2)
+ {
+ *target++=*ptr++; /* Copy and */
+ ptr++; /* skip cruft */
+ count-=2;
+ }
+ /* Trailing byte? */
+ if(count)
+ {
+ /* Big endian */
+ unsigned short v=*ptr;
+ *((char *)target)=v>>8;
+ }
+}
+
+static void dayna_memcpy_tocard(struct net_device *dev, int to, const void *from, int count)
+{
+ volatile unsigned short *ptr;
+ const unsigned short *src=from;
+ to<<=1; /* word, skip overhead */
+ ptr=(unsigned short *)(dev->mem_start+to);
+ /* Leading byte? */
+ if (to&2) { /* avoid a byte write (stomps on other data) */
+ ptr[-1] = (ptr[-1]&0xFF00)|*((unsigned char *)src)++;
+ ptr++;
+ count--;
+ }
+ while(count>=2)
+ {
+ *ptr++=*src++; /* Copy and */
+ ptr++; /* skip cruft */
+ count-=2;
+ }
+ /* Trailing byte? */
+ if(count)
+ {
+ /* Big endian */
+ unsigned short v=*src;
+ /* card doesn't like byte writes */
+ *ptr=(*ptr&0x00FF)|(v&0xFF00);
+ }
+}
+
+/* sane block input/output */
+static void sane_get_8390_hdr(struct net_device *dev,
+ struct e8390_pkt_hdr *hdr, int ring_page)
+{
+ unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
+ memcpy_fromio((void *)hdr, (char *)dev->mem_start + hdr_start, 4);
+ /* Fix endianness */
+ hdr->count = swab16(hdr->count);
+}
+
+static void sane_block_input(struct net_device *dev, int count,
+ struct sk_buff *skb, int ring_offset)
+{
+ unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
+ unsigned long xfer_start = xfer_base + dev->mem_start;
+
+ if (xfer_start + count > ei_status.rmem_end) {
+ /* We must wrap the input move. */
+ int semi_count = ei_status.rmem_end - xfer_start;
+ memcpy_fromio(skb->data, (char *)dev->mem_start + xfer_base, semi_count);
+ count -= semi_count;
+ memcpy_toio(skb->data + semi_count, (char *)ei_status.rmem_start, count);
+ } else {
+ memcpy_fromio(skb->data, (char *)dev->mem_start + xfer_base, count);
+ }
+}
+
+static void sane_block_output(struct net_device *dev, int count,
+ const unsigned char *buf, int start_page)
+{
+ long shmem = (start_page - WD_START_PG)<<8;
+
+ memcpy_toio((char *)dev->mem_start + shmem, buf, count);
+}
+
+/* dayna block input/output */
+static void dayna_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
+{
+ unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
+
+ dayna_memcpy_fromcard(dev, (void *)hdr, hdr_start, 4);
+ /* Fix endianness */
+ hdr->count=(hdr->count&0xFF)<<8|(hdr->count>>8);
+}
+
+static void dayna_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
+{
+ unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
+ unsigned long xfer_start = xfer_base+dev->mem_start;
+
+ /* Note the offset math is done in card memory space which is word
+ per long onto our space. */
+
+ if (xfer_start + count > ei_status.rmem_end)
+ {
+ /* We must wrap the input move. */
+ int semi_count = ei_status.rmem_end - xfer_start;
+ dayna_memcpy_fromcard(dev, skb->data, xfer_base, semi_count);
+ count -= semi_count;
+ dayna_memcpy_fromcard(dev, skb->data + semi_count,
+ ei_status.rmem_start - dev->mem_start,
+ count);
+ }
+ else
+ {
+ dayna_memcpy_fromcard(dev, skb->data, xfer_base, count);
+ }
+}
+
+static void dayna_block_output(struct net_device *dev, int count, const unsigned char *buf,
+ int start_page)
+{
+ long shmem = (start_page - WD_START_PG)<<8;
+
+ dayna_memcpy_tocard(dev, shmem, buf, count);
+}
+
+/* Cabletron block I/O */
+static void slow_sane_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
+ int ring_page)
+{
+ unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
+ word_memcpy_fromcard((void *)hdr, (char *)dev->mem_start+hdr_start, 4);
+ /* Register endianism - fix here rather than 8390.c */
+ hdr->count = (hdr->count&0xFF)<<8|(hdr->count>>8);
+}
+
+static void slow_sane_block_input(struct net_device *dev, int count, struct sk_buff *skb,
+ int ring_offset)
+{
+ unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
+ unsigned long xfer_start = xfer_base+dev->mem_start;
+
+ if (xfer_start + count > ei_status.rmem_end)
+ {
+ /* We must wrap the input move. */
+ int semi_count = ei_status.rmem_end - xfer_start;
+ word_memcpy_fromcard(skb->data, (char *)dev->mem_start +
+ xfer_base, semi_count);
+ count -= semi_count;
+ word_memcpy_fromcard(skb->data + semi_count,
+ (char *)ei_status.rmem_start, count);
+ }
+ else
+ {
+ word_memcpy_fromcard(skb->data, (char *)dev->mem_start +
+ xfer_base, count);
+ }
+}
+
+static void slow_sane_block_output(struct net_device *dev, int count, const unsigned char *buf,
+ int start_page)
+{
+ long shmem = (start_page - WD_START_PG)<<8;
+
+ word_memcpy_tocard((char *)dev->mem_start + shmem, buf, count);
+}
+
+static void word_memcpy_tocard(void *tp, const void *fp, int count)
+{
+ volatile unsigned short *to = tp;
+ const unsigned short *from = fp;
+
+ count++;
+ count/=2;
+
+ while(count--)
+ *to++=*from++;
+}
+
+static void word_memcpy_fromcard(void *tp, const void *fp, int count)
+{
+ unsigned short *to = tp;
+ const volatile unsigned short *from = fp;
+
+ count++;
+ count/=2;
+
+ while(count--)
+ *to++=*from++;
+}
+
+
generated by cgit v1.2.3 (git 2.0.4) at 2024-11-02 20:34:38 +0000