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authorJoe Perches <joe@perches.com>2012-05-18 12:56:31 +0000
committerDavid S. Miller <davem@davemloft.net>2012-05-18 23:48:07 -0400
commit6fba180ee8b1c86b03d33013b4c2fc54fc5fc248 (patch)
treea80bed23a1e5cde7b0c5b72699e19cd98ef0b2ea
parent808e9a77358995612c250ad5319f4bfe12c8416d (diff)
downloadlinux-6fba180ee8b1c86b03d33013b4c2fc54fc5fc248.tar.gz
cirrus: cs89x0: Remove function prototypes and reorder declarations
Move blocks of code around to avoid function prototypes. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/ethernet/cirrus/cs89x0.c1467
1 files changed, 721 insertions, 746 deletions
diff --git a/drivers/net/ethernet/cirrus/cs89x0.c b/drivers/net/ethernet/cirrus/cs89x0.c
index 859f8bec292..845b2020f29 100644
--- a/drivers/net/ethernet/cirrus/cs89x0.c
+++ b/drivers/net/ethernet/cirrus/cs89x0.c
@@ -174,28 +174,6 @@ struct net_local {
#endif
};
-/* Index to functions, as function prototypes. */
-static int net_open(struct net_device *dev);
-static netdev_tx_t net_send_packet(struct sk_buff *skb, struct net_device *dev);
-static irqreturn_t net_interrupt(int irq, void *dev_id);
-static void set_multicast_list(struct net_device *dev);
-static void net_timeout(struct net_device *dev);
-static void net_rx(struct net_device *dev);
-static int net_close(struct net_device *dev);
-static struct net_device_stats *net_get_stats(struct net_device *dev);
-static void reset_chip(struct net_device *dev);
-static int get_eeprom_data(struct net_device *dev, int off, int len, int *buffer);
-static int get_eeprom_cksum(int off, int len, int *buffer);
-static int set_mac_address(struct net_device *dev, void *addr);
-static void count_rx_errors(int status, struct net_device *dev);
-#ifdef CONFIG_NET_POLL_CONTROLLER
-static void net_poll_controller(struct net_device *dev);
-#endif
-#if ALLOW_DMA
-static void get_dma_channel(struct net_device *dev);
-static void release_dma_buff(struct net_local *lp);
-#endif
-
/* Example routines you must write ;->. */
#define tx_done(dev) 1
@@ -321,7 +299,7 @@ get_eeprom_data(struct net_device *dev, int off, int len, int *buffer)
{
int i;
- cs89_dbg(3, info, "EEPROM data from %x for %x:\n", off, len);
+ cs89_dbg(3, info, "EEPROM data from %x for %x:", off, len);
for (i = 0; i < len; i++) {
if (wait_eeprom_ready(dev) < 0)
return -1;
@@ -330,7 +308,7 @@ get_eeprom_data(struct net_device *dev, int off, int len, int *buffer)
if (wait_eeprom_ready(dev) < 0)
return -1;
buffer[i] = readreg(dev, PP_EEData);
- cs89_dbg(3, cont, "%04x ", buffer[i]);
+ cs89_dbg(3, cont, " %04x", buffer[i]);
}
cs89_dbg(3, cont, "\n");
return 0;
@@ -350,420 +328,44 @@ get_eeprom_cksum(int off, int len, int *buffer)
return -1;
}
-#ifdef CONFIG_NET_POLL_CONTROLLER
-/*
- * Polling receive - used by netconsole and other diagnostic tools
- * to allow network i/o with interrupts disabled.
- */
-static void net_poll_controller(struct net_device *dev)
-{
- disable_irq(dev->irq);
- net_interrupt(dev->irq, dev);
- enable_irq(dev->irq);
-}
-#endif
-
-static const struct net_device_ops net_ops = {
- .ndo_open = net_open,
- .ndo_stop = net_close,
- .ndo_tx_timeout = net_timeout,
- .ndo_start_xmit = net_send_packet,
- .ndo_get_stats = net_get_stats,
- .ndo_set_rx_mode = set_multicast_list,
- .ndo_set_mac_address = set_mac_address,
-#ifdef CONFIG_NET_POLL_CONTROLLER
- .ndo_poll_controller = net_poll_controller,
-#endif
- .ndo_change_mtu = eth_change_mtu,
- .ndo_validate_addr = eth_validate_addr,
-};
-
-/* This is the real probe routine.
- * Linux has a history of friendly device probes on the ISA bus.
- * A good device probes avoids doing writes, and
- * verifies that the correct device exists and functions.
- * Return 0 on success.
- */
-static int __init
-cs89x0_probe1(struct net_device *dev, void __iomem *ioaddr, int modular)
+static void
+write_irq(struct net_device *dev, int chip_type, int irq)
{
- struct net_local *lp = netdev_priv(dev);
int i;
- int tmp;
- unsigned rev_type = 0;
- int eeprom_buff[CHKSUM_LEN];
- int retval;
- /* Initialize the device structure. */
- if (!modular) {
- memset(lp, 0, sizeof(*lp));
- spin_lock_init(&lp->lock);
-#ifndef MODULE
-#if ALLOW_DMA
- if (g_cs89x0_dma) {
- lp->use_dma = 1;
- lp->dma = g_cs89x0_dma;
- lp->dmasize = 16; /* Could make this an option... */
- }
-#endif
- lp->force = g_cs89x0_media__force;
-#endif
- }
-
- pr_debug("PP_addr at %p[%x]: 0x%x\n",
- ioaddr, ADD_PORT, ioread16(ioaddr + ADD_PORT));
- iowrite16(PP_ChipID, ioaddr + ADD_PORT);
-
- tmp = ioread16(ioaddr + DATA_PORT);
- if (tmp != CHIP_EISA_ID_SIG) {
- pr_debug("%s: incorrect signature at %p[%x]: 0x%x!="
- CHIP_EISA_ID_SIG_STR "\n",
- dev->name, ioaddr, DATA_PORT, tmp);
- retval = -ENODEV;
- goto out1;
- }
-
- lp->virt_addr = ioaddr;
-
- /* get the chip type */
- rev_type = readreg(dev, PRODUCT_ID_ADD);
- lp->chip_type = rev_type & ~REVISON_BITS;
- lp->chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A';
-
- /* Check the chip type and revision in order to set the correct send command
- CS8920 revision C and CS8900 revision F can use the faster send. */
- lp->send_cmd = TX_AFTER_381;
- if (lp->chip_type == CS8900 && lp->chip_revision >= 'F')
- lp->send_cmd = TX_NOW;
- if (lp->chip_type != CS8900 && lp->chip_revision >= 'C')
- lp->send_cmd = TX_NOW;
-
- pr_info_once("%s\n", version);
-
- pr_info("%s: cs89%c0%s rev %c found at %p ",
- dev->name,
- lp->chip_type == CS8900 ? '0' : '2',
- lp->chip_type == CS8920M ? "M" : "",
- lp->chip_revision,
- lp->virt_addr);
-
- reset_chip(dev);
-
- /* Here we read the current configuration of the chip.
- * If there is no Extended EEPROM then the idea is to not disturb
- * the chip configuration, it should have been correctly setup by
- * automatic EEPROM read on reset. So, if the chip says it read
- * the EEPROM the driver will always do *something* instead of
- * complain that adapter_cnf is 0.
- */
-
- if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) ==
- (EEPROM_OK | EEPROM_PRESENT)) {
- /* Load the MAC. */
- for (i = 0; i < ETH_ALEN / 2; i++) {
- unsigned int Addr;
- Addr = readreg(dev, PP_IA + i * 2);
- dev->dev_addr[i * 2] = Addr & 0xFF;
- dev->dev_addr[i * 2 + 1] = Addr >> 8;
- }
-
- /* Load the Adapter Configuration.
- * Note: Barring any more specific information from some
- * other source (ie EEPROM+Schematics), we would not know
- * how to operate a 10Base2 interface on the AUI port.
- * However, since we do read the status of HCB1 and use
- * settings that always result in calls to control_dc_dc(dev,0)
- * a BNC interface should work if the enable pin
- * (dc/dc converter) is on HCB1.
- * It will be called AUI however.
- */
-
- lp->adapter_cnf = 0;
- i = readreg(dev, PP_LineCTL);
- /* Preserve the setting of the HCB1 pin. */
- if ((i & (HCB1 | HCB1_ENBL)) == (HCB1 | HCB1_ENBL))
- lp->adapter_cnf |= A_CNF_DC_DC_POLARITY;
- /* Save the sqelch bit */
- if ((i & LOW_RX_SQUELCH) == LOW_RX_SQUELCH)
- lp->adapter_cnf |= A_CNF_EXTND_10B_2 | A_CNF_LOW_RX_SQUELCH;
- /* Check if the card is in 10Base-t only mode */
- if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == 0)
- lp->adapter_cnf |= A_CNF_10B_T | A_CNF_MEDIA_10B_T;
- /* Check if the card is in AUI only mode */
- if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUI_ONLY)
- lp->adapter_cnf |= A_CNF_AUI | A_CNF_MEDIA_AUI;
- /* Check if the card is in Auto mode. */
- if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUTO_AUI_10BASET)
- lp->adapter_cnf |= A_CNF_AUI | A_CNF_10B_T |
- A_CNF_MEDIA_AUI | A_CNF_MEDIA_10B_T | A_CNF_MEDIA_AUTO;
-
- cs89_dbg(1, info, "%s: PP_LineCTL=0x%x, adapter_cnf=0x%x\n",
- dev->name, i, lp->adapter_cnf);
-
- /* IRQ. Other chips already probe, see below. */
- if (lp->chip_type == CS8900)
- lp->isa_config = readreg(dev, PP_CS8900_ISAINT) & INT_NO_MASK;
-
- pr_cont("[Cirrus EEPROM] ");
- }
-
- pr_cont("\n");
-
- /* First check to see if an EEPROM is attached. */
-
- if ((readreg(dev, PP_SelfST) & EEPROM_PRESENT) == 0)
- pr_warn("No EEPROM, relying on command line....\n");
- else if (get_eeprom_data(dev, START_EEPROM_DATA, CHKSUM_LEN, eeprom_buff) < 0) {
- pr_warn("EEPROM read failed, relying on command line\n");
- } else if (get_eeprom_cksum(START_EEPROM_DATA, CHKSUM_LEN, eeprom_buff) < 0) {
- /* Check if the chip was able to read its own configuration starting
- at 0 in the EEPROM*/
- if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) !=
- (EEPROM_OK | EEPROM_PRESENT))
- pr_warn("Extended EEPROM checksum bad and no Cirrus EEPROM, relying on command line\n");
-
- } else {
- /* This reads an extended EEPROM that is not documented
- * in the CS8900 datasheet.
- */
-
- /* get transmission control word but keep the autonegotiation bits */
- if (!lp->auto_neg_cnf)
- lp->auto_neg_cnf = eeprom_buff[AUTO_NEG_CNF_OFFSET / 2];
- /* Store adapter configuration */
- if (!lp->adapter_cnf)
- lp->adapter_cnf = eeprom_buff[ADAPTER_CNF_OFFSET / 2];
- /* Store ISA configuration */
- lp->isa_config = eeprom_buff[ISA_CNF_OFFSET / 2];
- dev->mem_start = eeprom_buff[PACKET_PAGE_OFFSET / 2] << 8;
-
- /* eeprom_buff has 32-bit ints, so we can't just memcpy it */
- /* store the initial memory base address */
- for (i = 0; i < ETH_ALEN / 2; i++) {
- dev->dev_addr[i * 2] = eeprom_buff[i];
- dev->dev_addr[i * 2 + 1] = eeprom_buff[i] >> 8;
- }
- cs89_dbg(1, debug, "%s: new adapter_cnf: 0x%x\n",
- dev->name, lp->adapter_cnf);
- }
-
- /* allow them to force multiple transceivers. If they force multiple, autosense */
- {
- int count = 0;
- if (lp->force & FORCE_RJ45) {
- lp->adapter_cnf |= A_CNF_10B_T;
- count++;
- }
- if (lp->force & FORCE_AUI) {
- lp->adapter_cnf |= A_CNF_AUI;
- count++;
- }
- if (lp->force & FORCE_BNC) {
- lp->adapter_cnf |= A_CNF_10B_2;
- count++;
- }
- if (count > 1)
- lp->adapter_cnf |= A_CNF_MEDIA_AUTO;
- else if (lp->force & FORCE_RJ45)
- lp->adapter_cnf |= A_CNF_MEDIA_10B_T;
- else if (lp->force & FORCE_AUI)
- lp->adapter_cnf |= A_CNF_MEDIA_AUI;
- else if (lp->force & FORCE_BNC)
- lp->adapter_cnf |= A_CNF_MEDIA_10B_2;
- }
-
- cs89_dbg(1, debug, "%s: after force 0x%x, adapter_cnf=0x%x\n",
- dev->name, lp->force, lp->adapter_cnf);
-
- /* FIXME: We don't let you set dc-dc polarity or low RX squelch from the command line: add it here */
-
- /* FIXME: We don't let you set the IMM bit from the command line: add it to lp->auto_neg_cnf here */
-
- /* FIXME: we don't set the Ethernet address on the command line. Use
- * ifconfig IFACE hw ether AABBCCDDEEFF
- */
-
- pr_info("media %s%s%s",
- (lp->adapter_cnf & A_CNF_10B_T) ? "RJ-45," : "",
- (lp->adapter_cnf & A_CNF_AUI) ? "AUI," : "",
- (lp->adapter_cnf & A_CNF_10B_2) ? "BNC," : "");
-
- lp->irq_map = 0xffff;
-
- /* If this is a CS8900 then no pnp soft */
- if (lp->chip_type != CS8900 &&
- /* Check if the ISA IRQ has been set */
- (i = readreg(dev, PP_CS8920_ISAINT) & 0xff,
- (i != 0 && i < CS8920_NO_INTS))) {
- if (!dev->irq)
- dev->irq = i;
- } else {
- i = lp->isa_config & INT_NO_MASK;
+ if (chip_type == CS8900) {
#ifndef CONFIG_CS89x0_PLATFORM
- if (lp->chip_type == CS8900) {
-#ifdef CS89x0_NONISA_IRQ
- i = cs8900_irq_map[0];
+ /* Search the mapping table for the corresponding IRQ pin. */
+ for (i = 0; i != ARRAY_SIZE(cs8900_irq_map); i++)
+ if (cs8900_irq_map[i] == irq)
+ break;
+ /* Not found */
+ if (i == ARRAY_SIZE(cs8900_irq_map))
+ i = 3;
#else
- /* Translate the IRQ using the IRQ mapping table. */
- if (i >= ARRAY_SIZE(cs8900_irq_map))
- pr_err("invalid ISA interrupt number %d\n", i);
- else
- i = cs8900_irq_map[i];
-
- lp->irq_map = CS8900_IRQ_MAP; /* fixed IRQ map for CS8900 */
- } else {
- int irq_map_buff[IRQ_MAP_LEN/2];
-
- if (get_eeprom_data(dev, IRQ_MAP_EEPROM_DATA,
- IRQ_MAP_LEN / 2,
- irq_map_buff) >= 0) {
- if ((irq_map_buff[0] & 0xff) == PNP_IRQ_FRMT)
- lp->irq_map = ((irq_map_buff[0] >> 8) |
- (irq_map_buff[1] << 8));
- }
-#endif
- }
-#endif
- if (!dev->irq)
- dev->irq = i;
- }
-
- pr_cont(" IRQ %d", dev->irq);
-
-#if ALLOW_DMA
- if (lp->use_dma) {
- get_dma_channel(dev);
- pr_cont(", DMA %d", dev->dma);
- } else
+ /* INTRQ0 pin is used for interrupt generation. */
+ i = 0;
#endif
- pr_cont(", programmed I/O");
-
- /* print the ethernet address. */
- pr_cont(", MAC %pM\n", dev->dev_addr);
-
- dev->netdev_ops = &net_ops;
- dev->watchdog_timeo = HZ;
-
- cs89_dbg(0, info, "cs89x0_probe1() successful\n");
-
- retval = register_netdev(dev);
- if (retval)
- goto out2;
- return 0;
-out2:
- iowrite16(PP_ChipID, lp->virt_addr + ADD_PORT);
-out1:
- return retval;
-}
-
-#ifndef CONFIG_CS89x0_PLATFORM
-/*
- * This function converts the I/O port addres used by the cs89x0_probe() and
- * init_module() functions to the I/O memory address used by the
- * cs89x0_probe1() function.
- */
-static int __init
-cs89x0_ioport_probe(struct net_device *dev, unsigned long ioport, int modular)
-{
- struct net_local *lp = netdev_priv(dev);
- int ret;
- void __iomem *io_mem;
-
- if (!lp)
- return -ENOMEM;
-
- dev->base_addr = ioport;
-
- if (!request_region(ioport, NETCARD_IO_EXTENT, DRV_NAME)) {
- ret = -EBUSY;
- goto out;
- }
-
- io_mem = ioport_map(ioport & ~3, NETCARD_IO_EXTENT);
- if (!io_mem) {
- ret = -ENOMEM;
- goto release;
- }
-
- /* if they give us an odd I/O address, then do ONE write to
- * the address port, to get it back to address zero, where we
- * expect to find the EISA signature word. An IO with a base of 0x3
- * will skip the test for the ADD_PORT.
- */
- if (ioport & 1) {
- cs89_dbg(1, info, "%s: odd ioaddr 0x%lx\n", dev->name, ioport);
- if ((ioport & 2) != 2) {
- if ((ioread16(io_mem + ADD_PORT) & ADD_MASK) !=
- ADD_SIG) {
- pr_err("%s: bad signature 0x%x\n",
- dev->name, ioread16(io_mem + ADD_PORT));
- ret = -ENODEV;
- goto unmap;
- }
- }
+ writereg(dev, PP_CS8900_ISAINT, i);
+ } else {
+ writereg(dev, PP_CS8920_ISAINT, irq);
}
-
- ret = cs89x0_probe1(dev, io_mem, modular);
- if (!ret)
- goto out;
-unmap:
- ioport_unmap(io_mem);
-release:
- release_region(ioport, NETCARD_IO_EXTENT);
-out:
- return ret;
}
-#ifndef MODULE
-/* Check for a network adaptor of this type, and return '0' iff one exists.
- * If dev->base_addr == 0, probe all likely locations.
- * If dev->base_addr == 1, always return failure.
- * If dev->base_addr == 2, allocate space for the device and return success
- * (detachable devices only).
- * Return 0 on success.
- */
-
-struct net_device * __init cs89x0_probe(int unit)
+static void
+count_rx_errors(int status, struct net_device *dev)
{
- struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
- unsigned *port;
- int err = 0;
- int irq;
- int io;
-
- if (!dev)
- return ERR_PTR(-ENODEV);
-
- sprintf(dev->name, "eth%d", unit);
- netdev_boot_setup_check(dev);
- io = dev->base_addr;
- irq = dev->irq;
-
- cs89_dbg(0, info, "cs89x0_probe(0x%x)\n", io);
-
- if (io > 0x1ff) { /* Check a single specified location. */
- err = cs89x0_ioport_probe(dev, io, 0);
- } else if (io != 0) { /* Don't probe at all. */
- err = -ENXIO;
- } else {
- for (port = netcard_portlist; *port; port++) {
- if (cs89x0_ioport_probe(dev, *port, 0) == 0)
- break;
- dev->irq = irq;
- }
- if (!*port)
- err = -ENODEV;
- }
- if (err)
- goto out;
- return dev;
-out:
- free_netdev(dev);
- pr_warn("no cs8900 or cs8920 detected. Be sure to disable PnP with SETUP\n");
- return ERR_PTR(err);
+ dev->stats.rx_errors++;
+ if (status & RX_RUNT)
+ dev->stats.rx_length_errors++;
+ if (status & RX_EXTRA_DATA)
+ dev->stats.rx_length_errors++;
+ if ((status & RX_CRC_ERROR) && !(status & (RX_EXTRA_DATA | RX_RUNT)))
+ /* per str 172 */
+ dev->stats.rx_crc_errors++;
+ if (status & RX_DRIBBLE)
+ dev->stats.rx_frame_errors++;
}
-#endif
-#endif
/*********************************
* This page contains DMA routines
@@ -915,44 +517,16 @@ skip_this_frame:
dev->stats.rx_bytes += length;
}
-#endif /* ALLOW_DMA */
-
-static void __init reset_chip(struct net_device *dev)
+static void release_dma_buff(struct net_local *lp)
{
-#if !defined(CONFIG_MACH_MX31ADS)
-#if !defined(CS89x0_NONISA_IRQ)
- struct net_local *lp = netdev_priv(dev);
-#endif /* CS89x0_NONISA_IRQ */
- int reset_start_time;
-
- writereg(dev, PP_SelfCTL, readreg(dev, PP_SelfCTL) | POWER_ON_RESET);
-
- /* wait 30 ms */
- msleep(30);
-
-#if !defined(CS89x0_NONISA_IRQ)
- if (lp->chip_type != CS8900) {
- /* Hardware problem requires PNP registers to be reconfigured after a reset */
- iowrite16(PP_CS8920_ISAINT, lp->virt_addr + ADD_PORT);
- iowrite8(dev->irq, lp->virt_addr + DATA_PORT);
- iowrite8(0, lp->virt_addr + DATA_PORT + 1);
-
- iowrite16(PP_CS8920_ISAMemB, lp->virt_addr + ADD_PORT);
- iowrite8((dev->mem_start >> 16) & 0xff,
- lp->virt_addr + DATA_PORT);
- iowrite8((dev->mem_start >> 8) & 0xff,
- lp->virt_addr + DATA_PORT + 1);
+ if (lp->dma_buff) {
+ free_pages((unsigned long)(lp->dma_buff),
+ get_order(lp->dmasize * 1024));
+ lp->dma_buff = NULL;
}
-#endif /* CS89x0_NONISA_IRQ */
-
- /* Wait until the chip is reset */
- reset_start_time = jiffies;
- while ((readreg(dev, PP_SelfST) & INIT_DONE) == 0 &&
- jiffies - reset_start_time < 2)
- ;
-#endif /* !CONFIG_MACH_MX31ADS */
}
+#endif /* ALLOW_DMA */
static void
control_dc_dc(struct net_device *dev, int on_not_off)
@@ -977,6 +551,49 @@ control_dc_dc(struct net_device *dev, int on_not_off)
;
}
+/* send a test packet - return true if carrier bits are ok */
+static int
+send_test_pkt(struct net_device *dev)
+{
+ struct net_local *lp = netdev_priv(dev);
+ char test_packet[] = {
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 46, /* A 46 in network order */
+ 0, 0, /* DSAP=0 & SSAP=0 fields */
+ 0xf3, 0 /* Control (Test Req + P bit set) */
+ };
+ long timenow = jiffies;
+
+ writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_TX_ON);
+
+ memcpy(test_packet, dev->dev_addr, ETH_ALEN);
+ memcpy(test_packet + ETH_ALEN, dev->dev_addr, ETH_ALEN);
+
+ iowrite16(TX_AFTER_ALL, lp->virt_addr + TX_CMD_PORT);
+ iowrite16(ETH_ZLEN, lp->virt_addr + TX_LEN_PORT);
+
+ /* Test to see if the chip has allocated memory for the packet */
+ while (jiffies - timenow < 5)
+ if (readreg(dev, PP_BusST) & READY_FOR_TX_NOW)
+ break;
+ if (jiffies - timenow >= 5)
+ return 0; /* this shouldn't happen */
+
+ /* Write the contents of the packet */
+ writewords(lp, TX_FRAME_PORT, test_packet, (ETH_ZLEN + 1) >> 1);
+
+ cs89_dbg(1, debug, "Sending test packet ");
+ /* wait a couple of jiffies for packet to be received */
+ for (timenow = jiffies; jiffies - timenow < 3;)
+ ;
+ if ((readreg(dev, PP_TxEvent) & TX_SEND_OK_BITS) == TX_OK) {
+ cs89_dbg(1, cont, "succeeded\n");
+ return 1;
+ }
+ cs89_dbg(1, cont, "failed\n");
+ return 0;
+}
+
#define DETECTED_NONE 0
#define DETECTED_RJ45H 1
#define DETECTED_RJ45F 2
@@ -1063,50 +680,22 @@ detect_tp(struct net_device *dev)
return DETECTED_RJ45H;
}
-/* send a test packet - return true if carrier bits are ok */
static int
-send_test_pkt(struct net_device *dev)
+detect_bnc(struct net_device *dev)
{
struct net_local *lp = netdev_priv(dev);
- char test_packet[] = {
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 46, /* A 46 in network order */
- 0, 0, /* DSAP=0 & SSAP=0 fields */
- 0xf3, 0 /* Control (Test Req + P bit set) */
- };
- long timenow = jiffies;
-
- writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_TX_ON);
-
- memcpy(test_packet, dev->dev_addr, ETH_ALEN);
- memcpy(test_packet + ETH_ALEN, dev->dev_addr, ETH_ALEN);
-
- iowrite16(TX_AFTER_ALL, lp->virt_addr + TX_CMD_PORT);
- iowrite16(ETH_ZLEN, lp->virt_addr + TX_LEN_PORT);
- /* Test to see if the chip has allocated memory for the packet */
- while (jiffies - timenow < 5)
- if (readreg(dev, PP_BusST) & READY_FOR_TX_NOW)
- break;
- if (jiffies - timenow >= 5)
- return 0; /* this shouldn't happen */
+ cs89_dbg(1, debug, "%s: Attempting BNC\n", dev->name);
+ control_dc_dc(dev, 1);
- /* Write the contents of the packet */
- writewords(lp, TX_FRAME_PORT, test_packet, (ETH_ZLEN + 1) >> 1);
+ writereg(dev, PP_LineCTL, (lp->linectl & ~AUTO_AUI_10BASET) | AUI_ONLY);
- cs89_dbg(1, debug, "Sending test packet ");
- /* wait a couple of jiffies for packet to be received */
- for (timenow = jiffies; jiffies - timenow < 3;)
- ;
- if ((readreg(dev, PP_TxEvent) & TX_SEND_OK_BITS) == TX_OK) {
- cs89_dbg(1, cont, "succeeded\n");
- return 1;
- }
- cs89_dbg(1, cont, "failed\n");
- return 0;
+ if (send_test_pkt(dev))
+ return DETECTED_BNC;
+ else
+ return DETECTED_NONE;
}
-
static int
detect_aui(struct net_device *dev)
{
@@ -1123,45 +712,154 @@ detect_aui(struct net_device *dev)
return DETECTED_NONE;
}
-static int
-detect_bnc(struct net_device *dev)
+/* We have a good packet(s), get it/them out of the buffers. */
+static void
+net_rx(struct net_device *dev)
{
struct net_local *lp = netdev_priv(dev);
+ struct sk_buff *skb;
+ int status, length;
- cs89_dbg(1, debug, "%s: Attempting BNC\n", dev->name);
- control_dc_dc(dev, 1);
+ status = ioread16(lp->virt_addr + RX_FRAME_PORT);
+ length = ioread16(lp->virt_addr + RX_FRAME_PORT);
- writereg(dev, PP_LineCTL, (lp->linectl & ~AUTO_AUI_10BASET) | AUI_ONLY);
+ if ((status & RX_OK) == 0) {
+ count_rx_errors(status, dev);
+ return;
+ }
- if (send_test_pkt(dev))
- return DETECTED_BNC;
- else
- return DETECTED_NONE;
+ /* Malloc up new buffer. */
+ skb = netdev_alloc_skb(dev, length + 2);
+ if (skb == NULL) {
+#if 0 /* Again, this seems a cruel thing to do */
+ pr_warn("%s: Memory squeeze, dropping packet\n", dev->name);
+#endif
+ dev->stats.rx_dropped++;
+ return;
+ }
+ skb_reserve(skb, 2); /* longword align L3 header */
+
+ readwords(lp, RX_FRAME_PORT, skb_put(skb, length), length >> 1);
+ if (length & 1)
+ skb->data[length-1] = ioread16(lp->virt_addr + RX_FRAME_PORT);
+
+ cs89_dbg(3, debug, "%s: received %d byte packet of type %x\n",
+ dev->name, length,
+ (skb->data[ETH_ALEN + ETH_ALEN] << 8) |
+ skb->data[ETH_ALEN + ETH_ALEN + 1]);
+
+ skb->protocol = eth_type_trans(skb, dev);
+ netif_rx(skb);
+ dev->stats.rx_packets++;
+ dev->stats.rx_bytes += length;
}
+/* The typical workload of the driver:
+ * Handle the network interface interrupts.
+ */
-static void
-write_irq(struct net_device *dev, int chip_type, int irq)
+static irqreturn_t net_interrupt(int irq, void *dev_id)
{
- int i;
+ struct net_device *dev = dev_id;
+ struct net_local *lp;
+ int status;
+ int handled = 0;
- if (chip_type == CS8900) {
-#ifndef CONFIG_CS89x0_PLATFORM
- /* Search the mapping table for the corresponding IRQ pin. */
- for (i = 0; i != ARRAY_SIZE(cs8900_irq_map); i++)
- if (cs8900_irq_map[i] == irq)
- break;
- /* Not found */
- if (i == ARRAY_SIZE(cs8900_irq_map))
- i = 3;
-#else
- /* INTRQ0 pin is used for interrupt generation. */
- i = 0;
+ lp = netdev_priv(dev);
+
+ /* we MUST read all the events out of the ISQ, otherwise we'll never
+ * get interrupted again. As a consequence, we can't have any limit
+ * on the number of times we loop in the interrupt handler. The
+ * hardware guarantees that eventually we'll run out of events. Of
+ * course, if you're on a slow machine, and packets are arriving
+ * faster than you can read them off, you're screwed. Hasta la
+ * vista, baby!
+ */
+ while ((status = ioread16(lp->virt_addr + ISQ_PORT))) {
+ cs89_dbg(4, debug, "%s: event=%04x\n", dev->name, status);
+ handled = 1;
+ switch (status & ISQ_EVENT_MASK) {
+ case ISQ_RECEIVER_EVENT:
+ /* Got a packet(s). */
+ net_rx(dev);
+ break;
+ case ISQ_TRANSMITTER_EVENT:
+ dev->stats.tx_packets++;
+ netif_wake_queue(dev); /* Inform upper layers. */
+ if ((status & (TX_OK |
+ TX_LOST_CRS |
+ TX_SQE_ERROR |
+ TX_LATE_COL |
+ TX_16_COL)) != TX_OK) {
+ if ((status & TX_OK) == 0)
+ dev->stats.tx_errors++;
+ if (status & TX_LOST_CRS)
+ dev->stats.tx_carrier_errors++;
+ if (status & TX_SQE_ERROR)
+ dev->stats.tx_heartbeat_errors++;
+ if (status & TX_LATE_COL)
+ dev->stats.tx_window_errors++;
+ if (status & TX_16_COL)
+ dev->stats.tx_aborted_errors++;
+ }
+ break;
+ case ISQ_BUFFER_EVENT:
+ if (status & READY_FOR_TX) {
+ /* we tried to transmit a packet earlier,
+ * but inexplicably ran out of buffers.
+ * That shouldn't happen since we only ever
+ * load one packet. Shrug. Do the right
+ * thing anyway.
+ */
+ netif_wake_queue(dev); /* Inform upper layers. */
+ }
+ if (status & TX_UNDERRUN) {
+ cs89_dbg(0, err, "%s: transmit underrun\n",
+ dev->name);
+ lp->send_underrun++;
+ if (lp->send_underrun == 3)
+ lp->send_cmd = TX_AFTER_381;
+ else if (lp->send_underrun == 6)
+ lp->send_cmd = TX_AFTER_ALL;
+ /* transmit cycle is done, although
+ * frame wasn't transmitted - this
+ * avoids having to wait for the upper
+ * layers to timeout on us, in the
+ * event of a tx underrun
+ */
+ netif_wake_queue(dev); /* Inform upper layers. */
+ }
+#if ALLOW_DMA
+ if (lp->use_dma && (status & RX_DMA)) {
+ int count = readreg(dev, PP_DmaFrameCnt);
+ while (count) {
+ cs89_dbg(5, debug,
+ "%s: receiving %d DMA frames\n",
+ dev->name, count);
+ if (count > 1)
+ cs89_dbg(2, debug,
+ "%s: receiving %d DMA frames\n",
+ dev->name, count);
+ dma_rx(dev);
+ if (--count == 0)
+ count = readreg(dev, PP_DmaFrameCnt);
+ if (count > 0)
+ cs89_dbg(2, debug,
+ "%s: continuing with %d DMA frames\n",
+ dev->name, count);
+ }
+ }
#endif
- writereg(dev, PP_CS8900_ISAINT, i);
- } else {
- writereg(dev, PP_CS8920_ISAINT, irq);
+ break;
+ case ISQ_RX_MISS_EVENT:
+ dev->stats.rx_missed_errors += (status >> 6);
+ break;
+ case ISQ_TX_COL_EVENT:
+ dev->stats.collisions += (status >> 6);
+ break;
+ }
}
+ return IRQ_RETVAL(handled);
}
/* Open/initialize the board. This is called (in the current kernel)
@@ -1433,6 +1131,52 @@ bad_out:
return ret;
}
+/* The inverse routine to net_open(). */
+static int
+net_close(struct net_device *dev)
+{
+#if ALLOW_DMA
+ struct net_local *lp = netdev_priv(dev);
+#endif
+
+ netif_stop_queue(dev);
+
+ writereg(dev, PP_RxCFG, 0);
+ writereg(dev, PP_TxCFG, 0);
+ writereg(dev, PP_BufCFG, 0);
+ writereg(dev, PP_BusCTL, 0);
+
+ free_irq(dev->irq, dev);
+
+#if ALLOW_DMA
+ if (lp->use_dma && lp->dma) {
+ free_dma(dev->dma);
+ release_dma_buff(lp);
+ }
+#endif
+
+ /* Update the statistics here. */
+ return 0;
+}
+
+/* Get the current statistics.
+ * This may be called with the card open or closed.
+ */
+static struct net_device_stats *
+net_get_stats(struct net_device *dev)
+{
+ struct net_local *lp = netdev_priv(dev);
+ unsigned long flags;
+
+ spin_lock_irqsave(&lp->lock, flags);
+ /* Update the statistics from the device registers. */
+ dev->stats.rx_missed_errors += (readreg(dev, PP_RxMiss) >> 6);
+ dev->stats.collisions += (readreg(dev, PP_TxCol) >> 6);
+ spin_unlock_irqrestore(&lp->lock, flags);
+
+ return &dev->stats;
+}
+
static void net_timeout(struct net_device *dev)
{
/* If we get here, some higher level has decided we are broken.
@@ -1495,228 +1239,6 @@ static netdev_tx_t net_send_packet(struct sk_buff *skb, struct net_device *dev)
return NETDEV_TX_OK;
}
-/* The typical workload of the driver:
- * Handle the network interface interrupts.
- */
-
-static irqreturn_t net_interrupt(int irq, void *dev_id)
-{
- struct net_device *dev = dev_id;
- struct net_local *lp;
- int status;
- int handled = 0;
-
- lp = netdev_priv(dev);
-
- /* we MUST read all the events out of the ISQ, otherwise we'll never
- * get interrupted again. As a consequence, we can't have any limit
- * on the number of times we loop in the interrupt handler. The
- * hardware guarantees that eventually we'll run out of events. Of
- * course, if you're on a slow machine, and packets are arriving
- * faster than you can read them off, you're screwed. Hasta la
- * vista, baby!
- */
- while ((status = ioread16(lp->virt_addr + ISQ_PORT))) {
- cs89_dbg(4, debug, "%s: event=%04x\n", dev->name, status);
- handled = 1;
- switch (status & ISQ_EVENT_MASK) {
- case ISQ_RECEIVER_EVENT:
- /* Got a packet(s). */
- net_rx(dev);
- break;
- case ISQ_TRANSMITTER_EVENT:
- dev->stats.tx_packets++;
- netif_wake_queue(dev); /* Inform upper layers. */
- if ((status & (TX_OK |
- TX_LOST_CRS |
- TX_SQE_ERROR |
- TX_LATE_COL |
- TX_16_COL)) != TX_OK) {
- if ((status & TX_OK) == 0)
- dev->stats.tx_errors++;
- if (status & TX_LOST_CRS)
- dev->stats.tx_carrier_errors++;
- if (status & TX_SQE_ERROR)
- dev->stats.tx_heartbeat_errors++;
- if (status & TX_LATE_COL)
- dev->stats.tx_window_errors++;
- if (status & TX_16_COL)
- dev->stats.tx_aborted_errors++;
- }
- break;
- case ISQ_BUFFER_EVENT:
- if (status & READY_FOR_TX) {
- /* we tried to transmit a packet earlier,
- * but inexplicably ran out of buffers.
- * That shouldn't happen since we only ever
- * load one packet. Shrug. Do the right
- * thing anyway.
- */
- netif_wake_queue(dev); /* Inform upper layers. */
- }
- if (status & TX_UNDERRUN) {
- cs89_dbg(0, err, "%s: transmit underrun\n",
- dev->name);
- lp->send_underrun++;
- if (lp->send_underrun == 3)
- lp->send_cmd = TX_AFTER_381;
- else if (lp->send_underrun == 6)
- lp->send_cmd = TX_AFTER_ALL;
- /* transmit cycle is done, although
- * frame wasn't transmitted - this
- * avoids having to wait for the upper
- * layers to timeout on us, in the
- * event of a tx underrun
- */
- netif_wake_queue(dev); /* Inform upper layers. */
- }
-#if ALLOW_DMA
- if (lp->use_dma && (status & RX_DMA)) {
- int count = readreg(dev, PP_DmaFrameCnt);
- while (count) {
- cs89_dbg(5, debug,
- "%s: receiving %d DMA frames\n",
- dev->name, count);
- if (count > 1)
- cs89_dbg(2, debug,
- "%s: receiving %d DMA frames\n",
- dev->name, count);
- dma_rx(dev);
- if (--count == 0)
- count = readreg(dev, PP_DmaFrameCnt);
- if (count > 0)
- cs89_dbg(2, debug,
- "%s: continuing with %d DMA frames\n",
- dev->name, count);
- }
- }
-#endif
- break;
- case ISQ_RX_MISS_EVENT:
- dev->stats.rx_missed_errors += (status >> 6);
- break;
- case ISQ_TX_COL_EVENT:
- dev->stats.collisions += (status >> 6);
- break;
- }
- }
- return IRQ_RETVAL(handled);
-}
-
-static void
-count_rx_errors(int status, struct net_device *dev)
-{
- dev->stats.rx_errors++;
- if (status & RX_RUNT)
- dev->stats.rx_length_errors++;
- if (status & RX_EXTRA_DATA)
- dev->stats.rx_length_errors++;
- if ((status & RX_CRC_ERROR) && !(status & (RX_EXTRA_DATA | RX_RUNT)))
- /* per str 172 */
- dev->stats.rx_crc_errors++;
- if (status & RX_DRIBBLE)
- dev->stats.rx_frame_errors++;
-}
-
-/* We have a good packet(s), get it/them out of the buffers. */
-static void
-net_rx(struct net_device *dev)
-{
- struct net_local *lp = netdev_priv(dev);
- struct sk_buff *skb;
- int status, length;
-
- status = ioread16(lp->virt_addr + RX_FRAME_PORT);
- length = ioread16(lp->virt_addr + RX_FRAME_PORT);
-
- if ((status & RX_OK) == 0) {
- count_rx_errors(status, dev);
- return;
- }
-
- /* Malloc up new buffer. */
- skb = netdev_alloc_skb(dev, length + 2);
- if (skb == NULL) {
-#if 0 /* Again, this seems a cruel thing to do */
- pr_warn("%s: Memory squeeze, dropping packet\n", dev->name);
-#endif
- dev->stats.rx_dropped++;
- return;
- }
- skb_reserve(skb, 2); /* longword align L3 header */
-
- readwords(lp, RX_FRAME_PORT, skb_put(skb, length), length >> 1);
- if (length & 1)
- skb->data[length-1] = ioread16(lp->virt_addr + RX_FRAME_PORT);
-
- cs89_dbg(3, debug, "%s: received %d byte packet of type %x\n",
- dev->name, length,
- (skb->data[ETH_ALEN + ETH_ALEN] << 8) |
- skb->data[ETH_ALEN + ETH_ALEN + 1]);
-
- skb->protocol = eth_type_trans(skb, dev);
- netif_rx(skb);
- dev->stats.rx_packets++;
- dev->stats.rx_bytes += length;
-}
-
-#if ALLOW_DMA
-static void release_dma_buff(struct net_local *lp)
-{
- if (lp->dma_buff) {
- free_pages((unsigned long)(lp->dma_buff),
- get_order(lp->dmasize * 1024));
- lp->dma_buff = NULL;
- }
-}
-#endif
-
-/* The inverse routine to net_open(). */
-static int
-net_close(struct net_device *dev)
-{
-#if ALLOW_DMA
- struct net_local *lp = netdev_priv(dev);
-#endif
-
- netif_stop_queue(dev);
-
- writereg(dev, PP_RxCFG, 0);
- writereg(dev, PP_TxCFG, 0);
- writereg(dev, PP_BufCFG, 0);
- writereg(dev, PP_BusCTL, 0);
-
- free_irq(dev->irq, dev);
-
-#if ALLOW_DMA
- if (lp->use_dma && lp->dma) {
- free_dma(dev->dma);
- release_dma_buff(lp);
- }
-#endif
-
- /* Update the statistics here. */
- return 0;
-}
-
-/* Get the current statistics.
- * This may be called with the card open or closed.
- */
-static struct net_device_stats *
-net_get_stats(struct net_device *dev)
-{
- struct net_local *lp = netdev_priv(dev);
- unsigned long flags;
-
- spin_lock_irqsave(&lp->lock, flags);
- /* Update the statistics from the device registers. */
- dev->stats.rx_missed_errors += (readreg(dev, PP_RxMiss) >> 6);
- dev->stats.collisions += (readreg(dev, PP_TxCol) >> 6);
- spin_unlock_irqrestore(&lp->lock, flags);
-
- return &dev->stats;
-}
-
static void set_multicast_list(struct net_device *dev)
{
struct net_local *lp = netdev_priv(dev);
@@ -1768,6 +1290,459 @@ static int set_mac_address(struct net_device *dev, void *p)
return 0;
}
+#ifdef CONFIG_NET_POLL_CONTROLLER
+/*
+ * Polling receive - used by netconsole and other diagnostic tools
+ * to allow network i/o with interrupts disabled.
+ */
+static void net_poll_controller(struct net_device *dev)
+{
+ disable_irq(dev->irq);
+ net_interrupt(dev->irq, dev);
+ enable_irq(dev->irq);
+}
+#endif
+
+static const struct net_device_ops net_ops = {
+ .ndo_open = net_open,
+ .ndo_stop = net_close,
+ .ndo_tx_timeout = net_timeout,
+ .ndo_start_xmit = net_send_packet,
+ .ndo_get_stats = net_get_stats,
+ .ndo_set_rx_mode = set_multicast_list,
+ .ndo_set_mac_address = set_mac_address,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = net_poll_controller,
+#endif
+ .ndo_change_mtu = eth_change_mtu,
+ .ndo_validate_addr = eth_validate_addr,
+};
+
+static void __init reset_chip(struct net_device *dev)
+{
+#if !defined(CONFIG_MACH_MX31ADS)
+#if !defined(CS89x0_NONISA_IRQ)
+ struct net_local *lp = netdev_priv(dev);
+#endif /* CS89x0_NONISA_IRQ */
+ int reset_start_time;
+
+ writereg(dev, PP_SelfCTL, readreg(dev, PP_SelfCTL) | POWER_ON_RESET);
+
+ /* wait 30 ms */
+ msleep(30);
+
+#if !defined(CS89x0_NONISA_IRQ)
+ if (lp->chip_type != CS8900) {
+ /* Hardware problem requires PNP registers to be reconfigured after a reset */
+ iowrite16(PP_CS8920_ISAINT, lp->virt_addr + ADD_PORT);
+ iowrite8(dev->irq, lp->virt_addr + DATA_PORT);
+ iowrite8(0, lp->virt_addr + DATA_PORT + 1);
+
+ iowrite16(PP_CS8920_ISAMemB, lp->virt_addr + ADD_PORT);
+ iowrite8((dev->mem_start >> 16) & 0xff,
+ lp->virt_addr + DATA_PORT);
+ iowrite8((dev->mem_start >> 8) & 0xff,
+ lp->virt_addr + DATA_PORT + 1);
+ }
+#endif /* CS89x0_NONISA_IRQ */
+
+ /* Wait until the chip is reset */
+ reset_start_time = jiffies;
+ while ((readreg(dev, PP_SelfST) & INIT_DONE) == 0 &&
+ jiffies - reset_start_time < 2)
+ ;
+#endif /* !CONFIG_MACH_MX31ADS */
+}
+
+/* This is the real probe routine.
+ * Linux has a history of friendly device probes on the ISA bus.
+ * A good device probes avoids doing writes, and
+ * verifies that the correct device exists and functions.
+ * Return 0 on success.
+ */
+static int __init
+cs89x0_probe1(struct net_device *dev, void __iomem *ioaddr, int modular)
+{
+ struct net_local *lp = netdev_priv(dev);
+ int i;
+ int tmp;
+ unsigned rev_type = 0;
+ int eeprom_buff[CHKSUM_LEN];
+ int retval;
+
+ /* Initialize the device structure. */
+ if (!modular) {
+ memset(lp, 0, sizeof(*lp));
+ spin_lock_init(&lp->lock);
+#ifndef MODULE
+#if ALLOW_DMA
+ if (g_cs89x0_dma) {
+ lp->use_dma = 1;
+ lp->dma = g_cs89x0_dma;
+ lp->dmasize = 16; /* Could make this an option... */
+ }
+#endif
+ lp->force = g_cs89x0_media__force;
+#endif
+ }
+
+ pr_debug("PP_addr at %p[%x]: 0x%x\n",
+ ioaddr, ADD_PORT, ioread16(ioaddr + ADD_PORT));
+ iowrite16(PP_ChipID, ioaddr + ADD_PORT);
+
+ tmp = ioread16(ioaddr + DATA_PORT);
+ if (tmp != CHIP_EISA_ID_SIG) {
+ pr_debug("%s: incorrect signature at %p[%x]: 0x%x!="
+ CHIP_EISA_ID_SIG_STR "\n",
+ dev->name, ioaddr, DATA_PORT, tmp);
+ retval = -ENODEV;
+ goto out1;
+ }
+
+ lp->virt_addr = ioaddr;
+
+ /* get the chip type */
+ rev_type = readreg(dev, PRODUCT_ID_ADD);
+ lp->chip_type = rev_type & ~REVISON_BITS;
+ lp->chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A';
+
+ /* Check the chip type and revision in order to set the correct
+ * send command. CS8920 revision C and CS8900 revision F can use
+ * the faster send.
+ */
+ lp->send_cmd = TX_AFTER_381;
+ if (lp->chip_type == CS8900 && lp->chip_revision >= 'F')
+ lp->send_cmd = TX_NOW;
+ if (lp->chip_type != CS8900 && lp->chip_revision >= 'C')
+ lp->send_cmd = TX_NOW;
+
+ pr_info_once("%s\n", version);
+
+ pr_info("%s: cs89%c0%s rev %c found at %p ",
+ dev->name,
+ lp->chip_type == CS8900 ? '0' : '2',
+ lp->chip_type == CS8920M ? "M" : "",
+ lp->chip_revision,
+ lp->virt_addr);
+
+ reset_chip(dev);
+
+ /* Here we read the current configuration of the chip.
+ * If there is no Extended EEPROM then the idea is to not disturb
+ * the chip configuration, it should have been correctly setup by
+ * automatic EEPROM read on reset. So, if the chip says it read
+ * the EEPROM the driver will always do *something* instead of
+ * complain that adapter_cnf is 0.
+ */
+
+ if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) ==
+ (EEPROM_OK | EEPROM_PRESENT)) {
+ /* Load the MAC. */
+ for (i = 0; i < ETH_ALEN / 2; i++) {
+ unsigned int Addr;
+ Addr = readreg(dev, PP_IA + i * 2);
+ dev->dev_addr[i * 2] = Addr & 0xFF;
+ dev->dev_addr[i * 2 + 1] = Addr >> 8;
+ }
+
+ /* Load the Adapter Configuration.
+ * Note: Barring any more specific information from some
+ * other source (ie EEPROM+Schematics), we would not know
+ * how to operate a 10Base2 interface on the AUI port.
+ * However, since we do read the status of HCB1 and use
+ * settings that always result in calls to control_dc_dc(dev,0)
+ * a BNC interface should work if the enable pin
+ * (dc/dc converter) is on HCB1.
+ * It will be called AUI however.
+ */
+
+ lp->adapter_cnf = 0;
+ i = readreg(dev, PP_LineCTL);
+ /* Preserve the setting of the HCB1 pin. */
+ if ((i & (HCB1 | HCB1_ENBL)) == (HCB1 | HCB1_ENBL))
+ lp->adapter_cnf |= A_CNF_DC_DC_POLARITY;
+ /* Save the sqelch bit */
+ if ((i & LOW_RX_SQUELCH) == LOW_RX_SQUELCH)
+ lp->adapter_cnf |= A_CNF_EXTND_10B_2 | A_CNF_LOW_RX_SQUELCH;
+ /* Check if the card is in 10Base-t only mode */
+ if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == 0)
+ lp->adapter_cnf |= A_CNF_10B_T | A_CNF_MEDIA_10B_T;
+ /* Check if the card is in AUI only mode */
+ if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUI_ONLY)
+ lp->adapter_cnf |= A_CNF_AUI | A_CNF_MEDIA_AUI;
+ /* Check if the card is in Auto mode. */
+ if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUTO_AUI_10BASET)
+ lp->adapter_cnf |= A_CNF_AUI | A_CNF_10B_T |
+ A_CNF_MEDIA_AUI | A_CNF_MEDIA_10B_T | A_CNF_MEDIA_AUTO;
+
+ cs89_dbg(1, info, "%s: PP_LineCTL=0x%x, adapter_cnf=0x%x\n",
+ dev->name, i, lp->adapter_cnf);
+
+ /* IRQ. Other chips already probe, see below. */
+ if (lp->chip_type == CS8900)
+ lp->isa_config = readreg(dev, PP_CS8900_ISAINT) & INT_NO_MASK;
+
+ pr_cont("[Cirrus EEPROM] ");
+ }
+
+ pr_cont("\n");
+
+ /* First check to see if an EEPROM is attached. */
+
+ if ((readreg(dev, PP_SelfST) & EEPROM_PRESENT) == 0)
+ pr_warn("No EEPROM, relying on command line....\n");
+ else if (get_eeprom_data(dev, START_EEPROM_DATA, CHKSUM_LEN, eeprom_buff) < 0) {
+ pr_warn("EEPROM read failed, relying on command line\n");
+ } else if (get_eeprom_cksum(START_EEPROM_DATA, CHKSUM_LEN, eeprom_buff) < 0) {
+ /* Check if the chip was able to read its own configuration starting
+ at 0 in the EEPROM*/
+ if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) !=
+ (EEPROM_OK | EEPROM_PRESENT))
+ pr_warn("Extended EEPROM checksum bad and no Cirrus EEPROM, relying on command line\n");
+
+ } else {
+ /* This reads an extended EEPROM that is not documented
+ * in the CS8900 datasheet.
+ */
+
+ /* get transmission control word but keep the autonegotiation bits */
+ if (!lp->auto_neg_cnf)
+ lp->auto_neg_cnf = eeprom_buff[AUTO_NEG_CNF_OFFSET / 2];
+ /* Store adapter configuration */
+ if (!lp->adapter_cnf)
+ lp->adapter_cnf = eeprom_buff[ADAPTER_CNF_OFFSET / 2];
+ /* Store ISA configuration */
+ lp->isa_config = eeprom_buff[ISA_CNF_OFFSET / 2];
+ dev->mem_start = eeprom_buff[PACKET_PAGE_OFFSET / 2] << 8;
+
+ /* eeprom_buff has 32-bit ints, so we can't just memcpy it */
+ /* store the initial memory base address */
+ for (i = 0; i < ETH_ALEN / 2; i++) {
+ dev->dev_addr[i * 2] = eeprom_buff[i];
+ dev->dev_addr[i * 2 + 1] = eeprom_buff[i] >> 8;
+ }
+ cs89_dbg(1, debug, "%s: new adapter_cnf: 0x%x\n",
+ dev->name, lp->adapter_cnf);
+ }
+
+ /* allow them to force multiple transceivers. If they force multiple, autosense */
+ {
+ int count = 0;
+ if (lp->force & FORCE_RJ45) {
+ lp->adapter_cnf |= A_CNF_10B_T;
+ count++;
+ }
+ if (lp->force & FORCE_AUI) {
+ lp->adapter_cnf |= A_CNF_AUI;
+ count++;
+ }
+ if (lp->force & FORCE_BNC) {
+ lp->adapter_cnf |= A_CNF_10B_2;
+ count++;
+ }
+ if (count > 1)
+ lp->adapter_cnf |= A_CNF_MEDIA_AUTO;
+ else if (lp->force & FORCE_RJ45)
+ lp->adapter_cnf |= A_CNF_MEDIA_10B_T;
+ else if (lp->force & FORCE_AUI)
+ lp->adapter_cnf |= A_CNF_MEDIA_AUI;
+ else if (lp->force & FORCE_BNC)
+ lp->adapter_cnf |= A_CNF_MEDIA_10B_2;
+ }
+
+ cs89_dbg(1, debug, "%s: after force 0x%x, adapter_cnf=0x%x\n",
+ dev->name, lp->force, lp->adapter_cnf);
+
+ /* FIXME: We don't let you set dc-dc polarity or low RX squelch from the command line: add it here */
+
+ /* FIXME: We don't let you set the IMM bit from the command line: add it to lp->auto_neg_cnf here */
+
+ /* FIXME: we don't set the Ethernet address on the command line. Use
+ * ifconfig IFACE hw ether AABBCCDDEEFF
+ */
+
+ pr_info("media %s%s%s",
+ (lp->adapter_cnf & A_CNF_10B_T) ? "RJ-45," : "",
+ (lp->adapter_cnf & A_CNF_AUI) ? "AUI," : "",
+ (lp->adapter_cnf & A_CNF_10B_2) ? "BNC," : "");
+
+ lp->irq_map = 0xffff;
+
+ /* If this is a CS8900 then no pnp soft */
+ if (lp->chip_type != CS8900 &&
+ /* Check if the ISA IRQ has been set */
+ (i = readreg(dev, PP_CS8920_ISAINT) & 0xff,
+ (i != 0 && i < CS8920_NO_INTS))) {
+ if (!dev->irq)
+ dev->irq = i;
+ } else {
+ i = lp->isa_config & INT_NO_MASK;
+#ifndef CONFIG_CS89x0_PLATFORM
+ if (lp->chip_type == CS8900) {
+#ifdef CS89x0_NONISA_IRQ
+ i = cs8900_irq_map[0];
+#else
+ /* Translate the IRQ using the IRQ mapping table. */
+ if (i >= ARRAY_SIZE(cs8900_irq_map))
+ pr_err("invalid ISA interrupt number %d\n", i);
+ else
+ i = cs8900_irq_map[i];
+
+ lp->irq_map = CS8900_IRQ_MAP; /* fixed IRQ map for CS8900 */
+ } else {
+ int irq_map_buff[IRQ_MAP_LEN/2];
+
+ if (get_eeprom_data(dev, IRQ_MAP_EEPROM_DATA,
+ IRQ_MAP_LEN / 2,
+ irq_map_buff) >= 0) {
+ if ((irq_map_buff[0] & 0xff) == PNP_IRQ_FRMT)
+ lp->irq_map = ((irq_map_buff[0] >> 8) |
+ (irq_map_buff[1] << 8));
+ }
+#endif
+ }
+#endif
+ if (!dev->irq)
+ dev->irq = i;
+ }
+
+ pr_cont(" IRQ %d", dev->irq);
+
+#if ALLOW_DMA
+ if (lp->use_dma) {
+ get_dma_channel(dev);
+ pr_cont(", DMA %d", dev->dma);
+ } else
+#endif
+ pr_cont(", programmed I/O");
+
+ /* print the ethernet address. */
+ pr_cont(", MAC %pM\n", dev->dev_addr);
+
+ dev->netdev_ops = &net_ops;
+ dev->watchdog_timeo = HZ;
+
+ cs89_dbg(0, info, "cs89x0_probe1() successful\n");
+
+ retval = register_netdev(dev);
+ if (retval)
+ goto out2;
+ return 0;
+out2:
+ iowrite16(PP_ChipID, lp->virt_addr + ADD_PORT);
+out1:
+ return retval;
+}
+
+#ifndef CONFIG_CS89x0_PLATFORM
+/*
+ * This function converts the I/O port addres used by the cs89x0_probe() and
+ * init_module() functions to the I/O memory address used by the
+ * cs89x0_probe1() function.
+ */
+static int __init
+cs89x0_ioport_probe(struct net_device *dev, unsigned long ioport, int modular)
+{
+ struct net_local *lp = netdev_priv(dev);
+ int ret;
+ void __iomem *io_mem;
+
+ if (!lp)
+ return -ENOMEM;
+
+ dev->base_addr = ioport;
+
+ if (!request_region(ioport, NETCARD_IO_EXTENT, DRV_NAME)) {
+ ret = -EBUSY;
+ goto out;
+ }
+
+ io_mem = ioport_map(ioport & ~3, NETCARD_IO_EXTENT);
+ if (!io_mem) {
+ ret = -ENOMEM;
+ goto release;
+ }
+
+ /* if they give us an odd I/O address, then do ONE write to
+ * the address port, to get it back to address zero, where we
+ * expect to find the EISA signature word. An IO with a base of 0x3
+ * will skip the test for the ADD_PORT.
+ */
+ if (ioport & 1) {
+ cs89_dbg(1, info, "%s: odd ioaddr 0x%lx\n", dev->name, ioport);
+ if ((ioport & 2) != 2) {
+ if ((ioread16(io_mem + ADD_PORT) & ADD_MASK) !=
+ ADD_SIG) {
+ pr_err("%s: bad signature 0x%x\n",
+ dev->name, ioread16(io_mem + ADD_PORT));
+ ret = -ENODEV;
+ goto unmap;
+ }
+ }
+ }
+
+ ret = cs89x0_probe1(dev, io_mem, modular);
+ if (!ret)
+ goto out;
+unmap:
+ ioport_unmap(io_mem);
+release:
+ release_region(ioport, NETCARD_IO_EXTENT);
+out:
+ return ret;
+}
+
+#ifndef MODULE
+/* Check for a network adaptor of this type, and return '0' iff one exists.
+ * If dev->base_addr == 0, probe all likely locations.
+ * If dev->base_addr == 1, always return failure.
+ * If dev->base_addr == 2, allocate space for the device and return success
+ * (detachable devices only).
+ * Return 0 on success.
+ */
+
+struct net_device * __init cs89x0_probe(int unit)
+{
+ struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
+ unsigned *port;
+ int err = 0;
+ int irq;
+ int io;
+
+ if (!dev)
+ return ERR_PTR(-ENODEV);
+
+ sprintf(dev->name, "eth%d", unit);
+ netdev_boot_setup_check(dev);
+ io = dev->base_addr;
+ irq = dev->irq;
+
+ cs89_dbg(0, info, "cs89x0_probe(0x%x)\n", io);
+
+ if (io > 0x1ff) { /* Check a single specified location. */
+ err = cs89x0_ioport_probe(dev, io, 0);
+ } else if (io != 0) { /* Don't probe at all. */
+ err = -ENXIO;
+ } else {
+ for (port = netcard_portlist; *port; port++) {
+ if (cs89x0_ioport_probe(dev, *port, 0) == 0)
+ break;
+ dev->irq = irq;
+ }
+ if (!*port)
+ err = -ENODEV;
+ }
+ if (err)
+ goto out;
+ return dev;
+out:
+ free_netdev(dev);
+ pr_warn("no cs8900 or cs8920 detected. Be sure to disable PnP with SETUP\n");
+ return ERR_PTR(err);
+}
+#endif
+#endif
+
#if defined(MODULE) && !defined(CONFIG_CS89x0_PLATFORM)
static struct net_device *dev_cs89x0;