patch-2.2.16 linux/drivers/net/82596.c
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- Lines: 1841
- Date:
Wed Jun 7 14:26:43 2000
- Orig file:
v2.2.15/linux/drivers/net/82596.c
- Orig date:
Wed May 3 17:16:40 2000
diff -urN v2.2.15/linux/drivers/net/82596.c linux/drivers/net/82596.c
@@ -11,10 +11,15 @@
by Richard Hirst <richard@sleepie.demon.co.uk>
Renamed to be 82596.c
- *** Untested on Apricot hardware, and may require some hacking
- *** to make it work. The old 82596.c reported hasn't worked
- *** since 1.3.xx anyway. I have been unable to find any users
- *** of Apricot hardware to test this on.
+ 980825: Changed to receive directly in to sk_buffs which are
+ allocated at open() time. Eliminates copy on incoming frames
+ (small ones are still copied). Shared data now held in a
+ non-cached page, so we can run on 68060 in copyback mode.
+
+ TBD:
+ * look at deferring rx frames rather than discarding (as per tulip)
+ * handle tx ring full as per tulip
+ * performance test to tune rx_copybreak
Most of my modifications relate to the braindead big-endian
implementation by Intel. When the i596 is operating in
@@ -35,7 +40,7 @@
*/
-static const char *version = "82596.c:v1.0 15/07/98\n";
+static const char *version = "82596.c $Revision: 1.2 $\n";
#include <linux/config.h>
#include <linux/module.h>
@@ -57,12 +62,47 @@
#include <asm/bitops.h>
#include <asm/io.h>
#include <asm/dma.h>
-#include <asm/pgtable.h> /*?? */
+#include <asm/pgtable.h>
-#ifdef CONFIG_MVME16x_NET
+/* DEBUG flags
+ */
+
+#define DEB_INIT 0x0001
+#define DEB_PROBE 0x0002
+#define DEB_SERIOUS 0x0004
+#define DEB_ERRORS 0x0008
+#define DEB_MULTI 0x0010
+#define DEB_TDR 0x0020
+#define DEB_OPEN 0x0040
+#define DEB_RESET 0x0080
+#define DEB_ADDCMD 0x0100
+#define DEB_STATUS 0x0200
+#define DEB_STARTTX 0x0400
+#define DEB_RXADDR 0x0800
+#define DEB_TXADDR 0x1000
+#define DEB_RXFRAME 0x2000
+#define DEB_INTS 0x4000
+#define DEB_STRUCT 0x8000
+#define DEB_ANY 0xffff
+
+
+#define DEB(x,y) if (i596_debug & (x)) y
+
+
+#if defined(CONFIG_MVME16x_NET) || defined(CONFIG_MVME16x_NET_MODULE)
+#define ENABLE_MVME16x_NET
+#endif
+#if defined(CONFIG_BVME6000_NET) || defined(CONFIG_BVME6000_NET_MODULE)
+#define ENABLE_BVME6000_NET
+#endif
+#if defined(CONFIG_APRICOT) || defined(CONFIG_APRICOT_MODULE)
+#define ENABLE_APRICOT
+#endif
+
+#ifdef ENABLE_MVME16x_NET
#include <asm/mvme16xhw.h>
#endif
-#ifdef CONFIG_BVME6000_NET
+#ifdef ENABLE_BVME6000_NET
#include <asm/bvme6000hw.h>
#endif
@@ -82,12 +122,13 @@
#define ISCP_BUSY 0x00010000
#define MACH_IS_APRICOT 0
#else
-#define WSWAPrfd(x) x
-#define WSWAPiscp(x) ((struct i596_iscp *)(x))
-#define WSWAPscb(x) ((struct i596_scb *)(x))
-#define WSWAPcmd(x) x
-#define WSWAPtbd(x) x
-#define WSWAPchar(x) x
+#define WSWAPrfd(x) ((struct i596_rfd *)(x))
+#define WSWAPrbd(x) ((struct i596_rbd *)(x))
+#define WSWAPiscp(x) ((struct i596_iscp *)(x))
+#define WSWAPscb(x) ((struct i596_scb *)(x))
+#define WSWAPcmd(x) ((struct i596_cmd *)(x))
+#define WSWAPtbd(x) ((struct i596_tbd *)(x))
+#define WSWAPchar(x) ((char *)(x))
#define ISCP_BUSY 0x0001
#define MACH_IS_APRICOT 1
#endif
@@ -103,27 +144,24 @@
#define PORT_ALTSCP 0x02 /* alternate SCB address */
#define PORT_ALTDUMP 0x03 /* Alternate DUMP address */
-#ifndef HAVE_PORTRESERVE
-#define check_region(addr, size) 0
-#define request_region(addr, size,name) do ; while(0)
-#endif
+static int i596_debug = (DEB_SERIOUS|DEB_PROBE);
-#ifndef HAVE_ALLOC_SKB
-#define alloc_skb(size, priority) (struct sk_buff *) kmalloc(size,priority)
-#define kfree_skbmem(buff, size) kfree_s(buff,size)
-#endif
+MODULE_AUTHOR("Richard Hirst");
+MODULE_DESCRIPTION("i82596 driver");
+MODULE_PARM(i596_debug, "i");
-#define APRICOT_DEBUG 2
-#ifdef APRICOT_DEBUG
-int i596_debug = APRICOT_DEBUG;
-#else
-int i596_debug = 1;
-#endif
+/* Copy frames shorter than rx_copybreak, otherwise pass on up in
+ * a full sized sk_buff. Value of 100 stolen from tulip.c (!alpha).
+ */
+static int rx_copybreak = 100;
+
+#define PKT_BUF_SZ 1536
+#define MAX_MC_CNT 64
#define I596_TOTAL_SIZE 17
-#define I596_NULL -1
+#define I596_NULL ((void *)0xffffffff)
#define CMD_EOL 0x8000 /* The last command of the list, stop. */
#define CMD_SUSP 0x4000 /* Suspend after doing cmd. */
@@ -156,12 +194,6 @@
unsigned long ca;
};
-struct i596_cmd {
- unsigned short status;
- unsigned short command;
- struct i596_cmd *next;
-};
-
#define EOF 0x8000
#define SIZE_MASK 0x3fff
@@ -172,6 +204,23 @@
char *data;
};
+/* The command structure has two 'next' pointers; v_next is the address of
+ * the next command as seen by the CPU, b_next is the address of the next
+ * command as seen by the 82596. The b_next pointer, as used by the 82596
+ * always references the status field of the next command, rather than the
+ * v_next field, because the 82596 is unaware of v_next. It may seem more
+ * logical to put v_next at the end of the structure, but we cannot do that
+ * because the 82596 expects other fields to be there, depending on command
+ * type.
+ */
+
+struct i596_cmd {
+ struct i596_cmd *v_next; /* Address from CPUs viewpoint */
+ unsigned short status;
+ unsigned short command;
+ struct i596_cmd *b_next; /* Address from i596 viewpoint */
+};
+
struct tx_cmd {
struct i596_cmd cmd;
struct i596_tbd *tbd;
@@ -180,16 +229,53 @@
struct sk_buff *skb; /* So we can free it after tx */
};
+struct tdr_cmd {
+ struct i596_cmd cmd;
+ unsigned short status;
+ unsigned short pad;
+};
+
+struct mc_cmd {
+ struct i596_cmd cmd;
+ short mc_cnt;
+ char mc_addrs[MAX_MC_CNT*6];
+};
+
+struct sa_cmd {
+ struct i596_cmd cmd;
+ char eth_addr[8];
+};
+
+struct cf_cmd {
+ struct i596_cmd cmd;
+ char i596_config[16];
+};
+
struct i596_rfd {
unsigned short stat;
unsigned short cmd;
- struct i596_rfd *next;
- long rbd;
+ struct i596_rfd *b_next; /* Address from i596 viewpoint */
+ struct i596_rbd *rbd;
unsigned short count;
unsigned short size;
- char data[1532];
+ struct i596_rfd *v_next; /* Address from CPUs viewpoint */
+ struct i596_rfd *v_prev;
+};
+
+struct i596_rbd {
+ unsigned short count;
+ unsigned short zero1;
+ struct i596_rbd *b_next;
+ unsigned char *b_data; /* Address from i596 viewpoint */
+ unsigned short size;
+ unsigned short zero2;
+ struct sk_buff *skb;
+ struct i596_rbd *v_next;
+ struct i596_rbd *b_addr; /* This rbd addr from i596 view */
+ unsigned char *v_data; /* Address from CPUs viewpoint */
};
+#define TX_RING_SIZE 64
#define RX_RING_SIZE 16
struct i596_scb {
@@ -222,19 +308,24 @@
volatile struct i596_scp scp;
volatile struct i596_iscp iscp;
volatile struct i596_scb scb;
- struct i596_cmd set_add;
- char eth_addr[8];
- struct i596_cmd set_conf;
- char i596_config[16];
- struct i596_cmd tdr;
+ struct sa_cmd sa_cmd;
+ struct cf_cmd cf_cmd;
+ struct tdr_cmd tdr_cmd;
+ struct mc_cmd mc_cmd;
unsigned long stat;
int last_restart __attribute__((aligned(4)));
- struct i596_rfd *rx_tail;
+ struct i596_rfd *rfd_head;
+ struct i596_rbd *rbd_head;
struct i596_cmd *cmd_tail;
struct i596_cmd *cmd_head;
int cmd_backlog;
unsigned long last_cmd;
struct net_device_stats stats;
+ struct i596_rfd rfds[RX_RING_SIZE];
+ struct i596_rbd rbds[RX_RING_SIZE];
+ struct tx_cmd tx_cmds[TX_RING_SIZE];
+ struct i596_tbd tbds[TX_RING_SIZE];
+ int next_tx_cmd;
};
char init_setup[] =
@@ -264,26 +355,29 @@
static int i596_close(struct device *dev);
static struct net_device_stats *i596_get_stats(struct device *dev);
static void i596_add_cmd(struct device *dev, struct i596_cmd *cmd);
-static void print_eth(char *);
+static void print_eth(unsigned char *buf, char *str);
static void set_multicast_list(struct device *dev);
+static int rx_ring_size = RX_RING_SIZE;
static int ticks_limit = 25;
-static int max_cmd_backlog = 16;
+static int max_cmd_backlog = TX_RING_SIZE-1;
static inline void CA(struct device *dev)
{
-#ifdef CONFIG_MVME16x_NET
+#ifdef ENABLE_MVME16x_NET
if (MACH_IS_MVME16x) {
((struct i596_reg *) dev->base_addr)->ca = 1;
}
#endif
-#ifdef CONFIG_BVME6000_NET
+#ifdef ENABLE_BVME6000_NET
if (MACH_IS_BVME6000) {
- volatile u32 i = *(volatile u32 *) (dev->base_addr);
+ volatile u32 i;
+
+ i = *(volatile u32 *) (dev->base_addr);
}
#endif
-#ifdef CONFIG_APRICOT
+#ifdef ENABLE_APRICOT
if (MACH_IS_APRICOT) {
outw(0, (short) (dev->base_addr) + 4);
}
@@ -293,14 +387,14 @@
static inline void MPU_PORT(struct device *dev, int c, volatile void *x)
{
-#ifdef CONFIG_MVME16x_NET
+#ifdef ENABLE_MVME16x_NET
if (MACH_IS_MVME16x) {
struct i596_reg *p = (struct i596_reg *) (dev->base_addr);
p->porthi = ((c) | (u32) (x)) & 0xffff;
p->portlo = ((c) | (u32) (x)) >> 16;
}
#endif
-#ifdef CONFIG_BVME6000_NET
+#ifdef ENABLE_BVME6000_NET
if (MACH_IS_BVME6000) {
u32 v = (u32) (c) | (u32) (x);
v = ((u32) (v) << 16) | ((u32) (v) >> 16);
@@ -312,103 +406,203 @@
}
-#if defined(CONFIG_MVME16x_NET) || defined(CONFIG_BVME6000_NET)
-static void i596_error(int irq, void *dev_id, struct pt_regs *regs)
+static inline int wait_istat(struct device *dev, struct i596_private *lp, int delcnt, char *str)
{
- struct device *dev = dev_id;
- struct i596_cmd *cmd;
+ while (--delcnt && lp->iscp.stat)
+ udelay(10);
+ if (!delcnt) {
+ printk("%s: %s, status %4.4x, cmd %4.4x.\n",
+ dev->name, str, lp->scb.status, lp->scb.command);
+ return -1;
+ }
+ else
+ return 0;
+}
- struct i596_private *lp = (struct i596_private *) dev->priv;
- printk("i596_error: lp = 0x%08x\n", (u32) lp);
- printk("scp at %08x, .sysbus = %08x, .iscp = %08x\n",
- (u32) & lp->scp, (u32) lp->scp.sysbus, (u32) lp->scp.iscp);
- printk("iscp at %08x, .stat = %08x, .scb = %08x\n",
- (u32) & lp->iscp, (u32) lp->iscp.stat, (u32) lp->iscp.scb);
- printk("scb at %08x, .status = %04x, .command = %04x\n",
- (u32) & lp->scb, lp->scb.status, lp->scb.command);
- printk(" .cmd = %08x, .rfd = %08x\n", (u32) lp->scb.cmd,
- (u32) lp->scb.rfd);
- cmd = WSWAPcmd(lp->scb.cmd);
- while (cmd && (u32) cmd < 0x1000000) {
- printk("cmd at %08x, .status = %04x, .command = %04x, .next = %08x\n",
- (u32) cmd, cmd->status, cmd->command, (u32) cmd->next);
- cmd = WSWAPcmd(cmd->next);
+
+static inline int wait_cmd(struct device *dev, struct i596_private *lp, int delcnt, char *str)
+{
+ while (--delcnt && lp->scb.command)
+ udelay(10);
+ if (!delcnt) {
+ printk("%s: %s, status %4.4x, cmd %4.4x.\n",
+ dev->name, str, lp->scb.status, lp->scb.command);
+ return -1;
}
- while (1);
+ else
+ return 0;
}
-#endif
-static inline int init_rx_bufs(struct device *dev, int num)
+
+static void i596_display_data(struct device *dev)
{
struct i596_private *lp = (struct i596_private *) dev->priv;
- int i;
+ struct i596_cmd *cmd;
struct i596_rfd *rfd;
+ struct i596_rbd *rbd;
+
+ printk("lp and scp at %p, .sysbus = %08lx, .iscp = %p\n",
+ &lp->scp, lp->scp.sysbus, lp->scp.iscp);
+ printk("iscp at %p, iscp.stat = %08lx, .scb = %p\n",
+ &lp->iscp, lp->iscp.stat, lp->iscp.scb);
+ printk("scb at %p, scb.status = %04x, .command = %04x,"
+ " .cmd = %p, .rfd = %p\n",
+ &lp->scb, lp->scb.status, lp->scb.command,
+ lp->scb.cmd, lp->scb.rfd);
+ printk(" errors: crc %lx, align %lx, resource %lx,"
+ " over %lx, rcvdt %lx, short %lx\n",
+ lp->scb.crc_err, lp->scb.align_err, lp->scb.resource_err,
+ lp->scb.over_err, lp->scb.rcvdt_err, lp->scb.short_err);
+ cmd = lp->cmd_head;
+ while (cmd != I596_NULL) {
+ printk("cmd at %p, .status = %04x, .command = %04x, .b_next = %p\n",
+ cmd, cmd->status, cmd->command, cmd->b_next);
+ cmd = cmd->v_next;
+ }
+ rfd = lp->rfd_head;
+ printk("rfd_head = %p\n", rfd);
+ do {
+ printk (" %p .stat %04x, .cmd %04x, b_next %p, rbd %p,"
+ " count %04x\n",
+ rfd, rfd->stat, rfd->cmd, rfd->b_next, rfd->rbd,
+ rfd->count);
+ rfd = rfd->v_next;
+ } while (rfd != lp->rfd_head);
+ rbd = lp->rbd_head;
+ printk("rbd_head = %p\n", rbd);
+ do {
+ printk(" %p .count %04x, b_next %p, b_data %p, size %04x\n",
+ rbd, rbd->count, rbd->b_next, rbd->b_data, rbd->size);
+ rbd = rbd->v_next;
+ } while (rbd != lp->rbd_head);
+}
- lp->scb.rfd = (struct i596_rfd *) I596_NULL;
- if (i596_debug > 1)
- printk("%s: init_rx_bufs %d.\n", dev->name, num);
+#if defined(ENABLE_MVME16x_NET) || defined(ENABLE_BVME6000_NET)
+static void i596_error(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct device *dev = dev_id;
+ volatile unsigned char *pcc2 = (unsigned char *) 0xfff42000;
- for (i = 0; i < num; i++) {
- if (!(rfd = (struct i596_rfd *) kmalloc(sizeof(struct i596_rfd), GFP_KERNEL)))
- break;
+ pcc2[0x28] = 1;
+ pcc2[0x2b] = 0x1d;
+ printk("%s: Error interrupt\n", dev->name);
+ i596_display_data(dev);
+}
+#endif
- rfd->stat = 0x0000;
- rfd->rbd = I596_NULL;
- rfd->count = 0;
- rfd->size = 1532;
- if (i == 0) {
- rfd->cmd = CMD_EOL;
- lp->rx_tail = rfd;
- } else
- rfd->cmd = 0x0000;
+static inline void init_rx_bufs(struct device *dev)
+{
+ struct i596_private *lp = (struct i596_private *)dev->priv;
+ int i;
+ struct i596_rfd *rfd;
+ struct i596_rbd *rbd;
+
+ /* First build the Receive Buffer Descriptor List */
+
+ for (i = 0, rbd = lp->rbds; i < rx_ring_size; i++, rbd++) {
+ struct sk_buff *skb = dev_alloc_skb(PKT_BUF_SZ);
- rfd->next = lp->scb.rfd;
- lp->scb.rfd = WSWAPrfd(rfd);
+ if (skb == NULL)
+ panic("82596: alloc_skb() failed");
+ skb->dev = dev;
+ rbd->v_next = rbd+1;
+ rbd->b_next = WSWAPrbd(virt_to_bus(rbd+1));
+ rbd->b_addr = WSWAPrbd(virt_to_bus(rbd));
+ rbd->skb = skb;
+ rbd->v_data = skb->tail;
+ rbd->b_data = WSWAPchar(virt_to_bus(skb->tail));
+ rbd->size = PKT_BUF_SZ;
+#ifdef __mc68000__
+ cache_clear(virt_to_phys(skb->tail), PKT_BUF_SZ);
+#endif
}
+ lp->rbd_head = lp->rbds;
+ rbd = lp->rbds + rx_ring_size - 1;
+ rbd->v_next = lp->rbds;
+ rbd->b_next = WSWAPrbd(virt_to_bus(lp->rbds));
- if (i != 0)
- lp->rx_tail->next = lp->scb.rfd;
+ /* Now build the Receive Frame Descriptor List */
- return (i);
+ for (i = 0, rfd = lp->rfds; i < rx_ring_size; i++, rfd++) {
+ rfd->rbd = I596_NULL;
+ rfd->v_next = rfd+1;
+ rfd->v_prev = rfd-1;
+ rfd->b_next = WSWAPrfd(virt_to_bus(rfd+1));
+ rfd->cmd = CMD_FLEX;
+ }
+ lp->rfd_head = lp->rfds;
+ lp->scb.rfd = WSWAPrfd(virt_to_bus(lp->rfds));
+ rfd = lp->rfds;
+ rfd->rbd = lp->rbd_head;
+ rfd->v_prev = lp->rfds + rx_ring_size - 1;
+ rfd = lp->rfds + rx_ring_size - 1;
+ rfd->v_next = lp->rfds;
+ rfd->b_next = WSWAPrfd(virt_to_bus(lp->rfds));
+ rfd->cmd = CMD_EOL|CMD_FLEX;
}
static inline void remove_rx_bufs(struct device *dev)
{
+ struct i596_private *lp = (struct i596_private *)dev->priv;
+ struct i596_rbd *rbd;
+ int i;
+
+ for (i = 0, rbd = lp->rbds; i < rx_ring_size; i++, rbd++) {
+ if (rbd->skb == NULL)
+ break;
+ dev_kfree_skb(rbd->skb);
+ }
+}
+
+
+static void rebuild_rx_bufs(struct device *dev)
+{
struct i596_private *lp = (struct i596_private *) dev->priv;
- struct i596_rfd *rfd = WSWAPrfd(lp->scb.rfd);
+ int i;
- lp->rx_tail->next = (struct i596_rfd *) I596_NULL;
+ /* Ensure rx frame/buffer descriptors are tidy */
- do {
- lp->scb.rfd = rfd->next;
- kfree(rfd);
- rfd = WSWAPrfd(lp->scb.rfd);
- }
- while (rfd != lp->rx_tail);
+ for (i = 0; i < rx_ring_size; i++) {
+ lp->rfds[i].rbd = I596_NULL;
+ lp->rfds[i].cmd = CMD_FLEX;
+ }
+ lp->rfds[rx_ring_size-1].cmd = CMD_EOL|CMD_FLEX;
+ lp->rfd_head = lp->rfds;
+ lp->scb.rfd = WSWAPrfd(virt_to_bus(lp->rfds));
+ lp->rbd_head = lp->rbds;
+ lp->rfds[0].rbd = WSWAPrbd(virt_to_bus(lp->rbds));
}
-static inline void init_i596_mem(struct device *dev)
+
+static int init_i596_mem(struct device *dev)
{
struct i596_private *lp = (struct i596_private *) dev->priv;
-#if !defined(CONFIG_MVME16x_NET) && !defined(CONFIG_BVME6000_NET)
+#if !defined(ENABLE_MVME16x_NET) && !defined(ENABLE_BVME6000_NET)
short ioaddr = dev->base_addr;
#endif
- int boguscnt = 100000;
unsigned long flags;
-#if defined(CONFIG_MVME16x_NET) || defined(CONFIG_BVME6000_NET)
-#ifdef CONFIG_MVME16x_NET
+ MPU_PORT(dev, PORT_RESET, 0);
+
+ udelay(100); /* Wait 100us - seems to help */
+
+#if defined(ENABLE_MVME16x_NET) || defined(ENABLE_BVME6000_NET)
+#ifdef ENABLE_MVME16x_NET
if (MACH_IS_MVME16x) {
volatile unsigned char *pcc2 = (unsigned char *) 0xfff42000;
/* Disable all ints for now */
pcc2[0x28] = 1;
- pcc2[0x2a] = 0x40;
- pcc2[0x2b] = 0x40; /* Set snooping bits now! */
+ pcc2[0x2a] = 0x48;
+ /* Following disables snooping. Snooping is not required
+ * as we make appropriate use of non-cached pages for
+ * shared data, and cache_push/cache_clear.
+ */
+ pcc2[0x2b] = 0x08;
}
#endif
-#ifdef CONFIG_BVME6000_NET
+#ifdef ENABLE_BVME6000_NET
if (MACH_IS_BVME6000) {
volatile unsigned char *ethirq = (unsigned char *) BVME_ETHIRQ_REG;
@@ -416,74 +610,72 @@
}
#endif
- MPU_PORT(dev, PORT_RESET, 0);
-
- udelay(100); /* Wait 100us - seems to help */
-
/* change the scp address */
- MPU_PORT(dev, PORT_ALTSCP, &lp->scp);
+ MPU_PORT(dev, PORT_ALTSCP, (void *)virt_to_bus(&lp->scp));
-#else
+#elif defined(ENABLE_APRICOT)
- /* change the scp address */
- outw(0, ioaddr);
- outw(0, ioaddr);
- outb(4, ioaddr + 0xf);
- outw(((((int) &lp->scp) & 0xffff) | 2), ioaddr);
- outw((((int) &lp->scp) >> 16) & 0xffff, ioaddr);
+ {
+ u32 scp = virt_to_bus(&lp->scp);
+
+ /* change the scp address */
+ outw(0, ioaddr);
+ outw(0, ioaddr);
+ outb(4, ioaddr + 0xf);
+ outw(scp | 2, ioaddr);
+ outw(scp >> 16, ioaddr);
+ }
#endif
lp->last_cmd = jiffies;
-#ifdef CONFIG_MVME16x_NET
+#ifdef ENABLE_MVME16x_NET
if (MACH_IS_MVME16x)
lp->scp.sysbus = 0x00000054;
#endif
-#ifdef CONFIG_BVME6000_NET
+#ifdef ENABLE_BVME6000_NET
if (MACH_IS_BVME6000)
lp->scp.sysbus = 0x0000004c;
#endif
-#ifdef CONFIG_APRICOT
+#ifdef ENABLE_APRICOT
if (MACH_IS_APRICOT)
lp->scp.sysbus = 0x00440000;
#endif
- lp->scp.iscp = WSWAPiscp(&(lp->iscp));
- lp->iscp.scb = WSWAPscb(&(lp->scb));
+ lp->scp.iscp = WSWAPiscp(virt_to_bus(&(lp->iscp)));
+ lp->iscp.scb = WSWAPscb(virt_to_bus(&(lp->scb)));
lp->iscp.stat = ISCP_BUSY;
lp->cmd_backlog = 0;
- lp->cmd_head = lp->scb.cmd = (struct i596_cmd *) I596_NULL;
+ lp->cmd_head = lp->scb.cmd = I596_NULL;
- if (i596_debug > 1)
- printk("%s: starting i82596.\n", dev->name);
+ DEB(DEB_INIT,printk("%s: starting i82596.\n", dev->name));
-#if !defined(CONFIG_MVME16x_NET) && !defined(CONFIG_BVME6000_NET)
+#if defined(ENABLE_APRICOT)
(void) inb(ioaddr + 0x10);
outb(4, ioaddr + 0xf);
#endif
CA(dev);
- while (lp->iscp.stat)
- if (--boguscnt == 0) {
- printk("%s: i82596 initialization timed out with status %4.4x, cmd %4.4x.\n",
- dev->name, lp->scb.status, lp->scb.command);
- break;
- }
+ if (wait_istat(dev,lp,1000,"initialization timed out"))
+ goto failed;
+ DEB(DEB_INIT,printk("%s: i82596 initialization successful\n", dev->name));
+
+ /* Ensure rx frame/buffer descriptors are tidy */
+ rebuild_rx_bufs(dev);
lp->scb.command = 0;
-#ifdef CONFIG_MVME16x_NET
+#ifdef ENABLE_MVME16x_NET
if (MACH_IS_MVME16x) {
volatile unsigned char *pcc2 = (unsigned char *) 0xfff42000;
/* Enable ints, etc. now */
- pcc2[0x2a] = 0x08;
pcc2[0x2a] = 0x55; /* Edge sensitive */
- pcc2[0x2b] = 0x55;
+ pcc2[0x2b] = 0x15;
}
#endif
-#ifdef CONFIG_BVME6000_NET
+#ifdef ENABLE_BVME6000_NET
if (MACH_IS_BVME6000) {
volatile unsigned char *ethirq = (unsigned char *) BVME_ETHIRQ_REG;
@@ -491,77 +683,131 @@
}
#endif
- memcpy(lp->i596_config, init_setup, 14);
- lp->set_conf.command = CmdConfigure;
- i596_add_cmd(dev, &lp->set_conf);
-
- memcpy(lp->eth_addr, dev->dev_addr, 6);
- lp->set_add.command = CmdSASetup;
- i596_add_cmd(dev, &lp->set_add);
- lp->tdr.command = CmdTDR;
- i596_add_cmd(dev, &lp->tdr);
+ DEB(DEB_INIT,printk("%s: queuing CmdConfigure\n", dev->name));
+ memcpy(lp->cf_cmd.i596_config, init_setup, 14);
+ lp->cf_cmd.cmd.command = CmdConfigure;
+ i596_add_cmd(dev, &lp->cf_cmd.cmd);
+
+ DEB(DEB_INIT,printk("%s: queuing CmdSASetup\n", dev->name));
+ memcpy(lp->sa_cmd.eth_addr, dev->dev_addr, 6);
+ lp->sa_cmd.cmd.command = CmdSASetup;
+ i596_add_cmd(dev, &lp->sa_cmd.cmd);
+
+ DEB(DEB_INIT,printk("%s: queuing CmdTDR\n", dev->name));
+ lp->tdr_cmd.cmd.command = CmdTDR;
+ i596_add_cmd(dev, &lp->tdr_cmd.cmd);
- boguscnt = 200000;
save_flags(flags);
cli();
- while (lp->scb.command)
- if (--boguscnt == 0) {
- printk("%s: receive unit start timed out with status %4.4x, cmd %4.4x.\n",
- dev->name, lp->scb.status, lp->scb.command);
- break;
- }
+ if (wait_cmd(dev,lp,1000,"timed out waiting to issue RX_START"))
+ goto failed;
+ DEB(DEB_INIT,printk("%s: Issuing RX_START\n", dev->name));
lp->scb.command = RX_START;
CA(dev);
restore_flags(flags);
- boguscnt = 2000;
- while (lp->scb.command)
- if (--boguscnt == 0) {
- printk("i82596 init timed out with status %4.4x, cmd %4.4x.\n",
- lp->scb.status, lp->scb.command);
- break;
- }
- return;
+ if (wait_cmd(dev,lp,1000,"RX_START not processed"))
+ goto failed;
+ DEB(DEB_INIT,printk("%s: Receive unit started OK\n", dev->name));
+ return 0;
+
+failed:
+ printk("%s: Failed to initialise 82596\n", dev->name);
+ MPU_PORT(dev, PORT_RESET, 0);
+ return -1;
}
static inline int i596_rx(struct device *dev)
{
- struct i596_private *lp = (struct i596_private *) dev->priv;
+ struct i596_private *lp = (struct i596_private *)dev->priv;
struct i596_rfd *rfd;
+ struct i596_rbd *rbd;
int frames = 0;
- if (i596_debug > 3)
- printk("i596_rx()\n");
-
- rfd = WSWAPrfd(lp->scb.rfd); /* Reference next frame descriptor to check */
+ DEB(DEB_RXFRAME,printk ("i596_rx(), rfd_head %p, rbd_head %p\n",
+ lp->rfd_head, lp->rbd_head));
- while ((rfd->stat) & STAT_C) { /* Loop while we have complete frames */
- if (i596_debug > 2)
- print_eth(rfd->data);
+ rfd = lp->rfd_head; /* Ref next frame to check */
- if ((rfd->stat) & STAT_OK) {
+ while ((rfd->stat) & STAT_C) { /* Loop while complete frames */
+ if (rfd->rbd == I596_NULL)
+ rbd = I596_NULL;
+ else if (rfd->rbd == lp->rbd_head->b_addr)
+ rbd = lp->rbd_head;
+ else {
+ printk("%s: rbd chain broken!\n", dev->name);
+ /* XXX Now what? */
+ rbd = I596_NULL;
+ }
+ DEB(DEB_RXFRAME, printk(" rfd %p, rfd.rbd %p, rfd.stat %04x\n",
+ rfd, rfd->rbd, rfd->stat));
+
+ if (rbd != I596_NULL && ((rfd->stat) & STAT_OK)) {
/* a good frame */
- int pkt_len = rfd->count & 0x3fff;
- struct sk_buff *skb = dev_alloc_skb(pkt_len);
+ int pkt_len = rbd->count & 0x3fff;
+ struct sk_buff *skb = rbd->skb;
+ int rx_in_place = 0;
+ DEB(DEB_RXADDR,print_eth(rbd->v_data, "received"));
frames++;
+ /* Check if the packet is long enough to just accept
+ * without copying to a properly sized skbuff.
+ */
+
+ if (pkt_len > rx_copybreak) {
+ struct sk_buff *newskb;
+
+ /* Get fresh skbuff to replace filled one. */
+ newskb = dev_alloc_skb(PKT_BUF_SZ);
+ if (newskb == NULL) {
+ skb = NULL; /* drop pkt */
+ goto memory_squeeze;
+ }
+ /* Pass up the skb already on the Rx ring. */
+ skb_put(skb, pkt_len);
+ rx_in_place = 1;
+ rbd->skb = newskb;
+ newskb->dev = dev;
+ rbd->v_data = newskb->tail;
+ rbd->b_data = WSWAPchar(virt_to_bus(newskb->tail));
+#ifdef __mc68000__
+ cache_clear(virt_to_phys(newskb->tail), PKT_BUF_SZ);
+#endif
+ }
+ else
+ skb = dev_alloc_skb(pkt_len + 2);
+memory_squeeze:
if (skb == NULL) {
- printk("%s: i596_rx Memory squeeze, dropping packet.\n", dev->name);
+ /* XXX tulip.c can defer packets here!! */
+ printk ("%s: i596_rx Memory squeeze, dropping packet.\n", dev->name);
lp->stats.rx_dropped++;
- } else {
+ }
+ else {
skb->dev = dev;
- memcpy(skb_put(skb, pkt_len), rfd->data, pkt_len);
- skb->protocol = eth_type_trans(skb, dev);
+ if (!rx_in_place) {
+ /* 16 byte align the data fields */
+ skb_reserve(skb, 2);
+ memcpy(skb_put(skb,pkt_len), rbd->v_data, pkt_len);
+ }
+ skb->protocol=eth_type_trans(skb,dev);
+ skb->len = pkt_len;
+#ifdef __mc68000__
+ cache_clear(virt_to_phys(rbd->skb->tail),
+ pkt_len);
+#endif
netif_rx(skb);
lp->stats.rx_packets++;
- lp->stats.rx_bytes += pkt_len;
+ lp->stats.rx_bytes+=pkt_len;
}
- } else {
+ }
+ else {
+ DEB(DEB_ERRORS, printk("%s: Error, rfd.stat = 0x%04x\n",
+ dev->name, rfd->stat));
lp->stats.rx_errors++;
if ((rfd->stat) & 0x0001)
lp->stats.collisions++;
@@ -581,33 +827,42 @@
/* Clear the buffer descriptor count and EOF + F flags */
+ if (rbd != I596_NULL && (rbd->count & 0x4000)) {
+ rbd->count = 0;
+ lp->rbd_head = rbd->v_next;
+ }
+
+ /* Tidy the frame descriptor, marking it as end of list */
+
+ rfd->rbd = I596_NULL;
rfd->stat = 0;
+ rfd->cmd = CMD_EOL|CMD_FLEX;
rfd->count = 0;
- rfd->cmd = CMD_EOL;
- lp->rx_tail->cmd = 0;
- lp->rx_tail = rfd;
- lp->scb.rfd = rfd->next;
- rfd = WSWAPrfd(lp->scb.rfd); /* Next frame descriptor to check */
+
+ /* Remove end-of-list from old end descriptor */
+
+ rfd->v_prev->cmd = CMD_FLEX;
+
+ /* Update record of next frame descriptor to process */
+
+ lp->scb.rfd = rfd->b_next;
+ lp->rfd_head = rfd->v_next;
+ rfd = lp->rfd_head;
}
- if (i596_debug > 3)
- printk("frames %d\n", frames);
+ DEB(DEB_RXFRAME,printk ("frames %d\n", frames));
return 0;
}
-static inline void i596_cleanup_cmd(struct i596_private *lp)
+
+static inline void i596_cleanup_cmd(struct device *dev, struct i596_private *lp)
{
struct i596_cmd *ptr;
- int boguscnt = 1000;
-
- if (i596_debug > 4)
- printk("i596_cleanup_cmd\n");
- while (lp->cmd_head != (struct i596_cmd *) I596_NULL) {
+ while (lp->cmd_head != I596_NULL) {
ptr = lp->cmd_head;
-
- lp->cmd_head = WSWAPcmd(lp->cmd_head->next);
+ lp->cmd_head = ptr->v_next;
lp->cmd_backlog--;
switch ((ptr->command) & 0x7) {
@@ -621,47 +876,29 @@
lp->stats.tx_errors++;
lp->stats.tx_aborted_errors++;
- ptr->next = (struct i596_cmd *) I596_NULL;
- kfree(tx_cmd);
- break;
- }
- case CmdMulticastList:
- {
- ptr->next = (struct i596_cmd *) I596_NULL;
- kfree(ptr);
+ ptr->v_next = ptr->b_next = I596_NULL;
+ tx_cmd->cmd.command = 0; /* Mark as free */
break;
}
default:
- ptr->next = (struct i596_cmd *) I596_NULL;
+ ptr->v_next = ptr->b_next = I596_NULL;
}
}
- while (lp->scb.command)
- if (--boguscnt == 0) {
- printk("i596_cleanup_cmd timed out with status %4.4x, cmd %4.4x.\n",
- lp->scb.status, lp->scb.command);
- break;
- }
- lp->scb.cmd = WSWAPcmd(lp->cmd_head);
+ wait_cmd(dev,lp,100,"i596_cleanup_cmd timed out");
+ lp->scb.cmd = I596_NULL;
}
static inline void i596_reset(struct device *dev, struct i596_private *lp, int ioaddr)
{
- int boguscnt = 1000;
unsigned long flags;
- if (i596_debug > 1)
- printk("i596_reset\n");
+ DEB(DEB_RESET,printk("i596_reset\n"));
save_flags(flags);
cli();
- while (lp->scb.command)
- if (--boguscnt == 0) {
- printk("i596_reset timed out with status %4.4x, cmd %4.4x.\n",
- lp->scb.status, lp->scb.command);
- break;
- }
+ wait_cmd(dev,lp,100,"i596_reset timed out");
dev->start = 0;
dev->tbusy = 1;
@@ -669,17 +906,10 @@
CA(dev);
/* wait for shutdown */
- boguscnt = 4000;
-
- while (lp->scb.command)
- if (--boguscnt == 0) {
- printk("i596_reset 2 timed out with status %4.4x, cmd %4.4x.\n",
- lp->scb.status, lp->scb.command);
- break;
- }
+ wait_cmd(dev,lp,1000,"i596_reset 2 timed out");
restore_flags(flags);
- i596_cleanup_cmd(lp);
+ i596_cleanup_cmd(dev,lp);
i596_rx(dev);
dev->start = 1;
@@ -693,14 +923,12 @@
struct i596_private *lp = (struct i596_private *) dev->priv;
int ioaddr = dev->base_addr;
unsigned long flags;
- int boguscnt = 1000;
- if (i596_debug > 4)
- printk("i596_add_cmd\n");
+ DEB(DEB_ADDCMD,printk("i596_add_cmd\n"));
cmd->status = 0;
cmd->command |= (CMD_EOL | CMD_INTR);
- cmd->next = (struct i596_cmd *) I596_NULL;
+ cmd->v_next = cmd->b_next = I596_NULL;
save_flags(flags);
cli();
@@ -714,24 +942,19 @@
* the CU.
*/
- if (lp->cmd_head != (struct i596_cmd *) I596_NULL) {
- lp->cmd_tail->next = WSWAPcmd(cmd);
+ if (lp->cmd_head != I596_NULL) {
+ lp->cmd_tail->v_next = cmd;
+ lp->cmd_tail->b_next = WSWAPcmd(virt_to_bus(&cmd->status));
} else {
lp->cmd_head = cmd;
- while (lp->scb.command)
- if (--boguscnt == 0) {
- printk("i596_add_cmd timed out with status %4.4x, cmd %4.4x.\n",
- lp->scb.status, lp->scb.command);
- break;
- }
- lp->scb.cmd = WSWAPcmd(cmd);
+ wait_cmd(dev,lp,100,"i596_add_cmd timed out");
+ lp->scb.cmd = WSWAPcmd(virt_to_bus(&cmd->status));
lp->scb.command = CUC_START;
CA(dev);
}
lp->cmd_tail = cmd;
lp->cmd_backlog++;
- lp->cmd_head = WSWAPcmd(lp->scb.cmd); /* Is this redundant? RGH 300597 */
restore_flags(flags);
if (lp->cmd_backlog > max_cmd_backlog) {
@@ -748,35 +971,34 @@
static int i596_open(struct device *dev)
{
- int i;
+ int res = 0;
- if (i596_debug > 1)
- printk("%s: i596_open() irq %d.\n", dev->name, dev->irq);
+ DEB(DEB_OPEN,printk("%s: i596_open() irq %d.\n", dev->name, dev->irq));
- if (request_irq(dev->irq, &i596_interrupt, 0, "apricot", dev))
+ if (request_irq(dev->irq, &i596_interrupt, 0, "i82596", dev)) {
+ printk("%s: IRQ %d not free\n", dev->name, dev->irq);
return -EAGAIN;
-#ifdef CONFIG_MVME16x_NET
+ }
+#ifdef ENABLE_MVME16x_NET
if (MACH_IS_MVME16x) {
- if (request_irq(0x56, &i596_error, 0, "apricot_error", dev))
+ if (request_irq(0x56, &i596_error, 0, "i82596_error", dev))
return -EAGAIN;
}
#endif
- if ((i = init_rx_bufs(dev, RX_RING_SIZE)) < RX_RING_SIZE)
- printk("%s: only able to allocate %d receive buffers\n", dev->name, i);
+ init_rx_bufs(dev);
- if (i < 4) {
- free_irq(dev->irq, dev);
- return -EAGAIN;
- }
dev->tbusy = 0;
dev->interrupt = 0;
dev->start = 1;
MOD_INC_USE_COUNT;
/* Initialize the 82596 memory */
- init_i596_mem(dev);
+ if (init_i596_mem(dev)) {
+ res = -EAGAIN;
+ free_irq(dev->irq, dev);
+ }
- return 0; /* Always succeed */
+ return res;
}
static int i596_start_xmit(struct sk_buff *skb, struct device *dev)
@@ -784,29 +1006,27 @@
struct i596_private *lp = (struct i596_private *) dev->priv;
int ioaddr = dev->base_addr;
struct tx_cmd *tx_cmd;
-
- if (i596_debug > 2)
- printk("%s: 82596 start xmit\n", dev->name);
+ struct i596_tbd *tbd;
/* Transmitter timeout, serious problems. */
if (dev->tbusy) {
int tickssofar = jiffies - dev->trans_start;
if (tickssofar < 5)
return 1;
- printk("%s: transmit timed out, status resetting.\n",
- dev->name);
+ DEB(DEB_SERIOUS,printk("%s: transmit timed out, status resetting.\n",
+ dev->name));
lp->stats.tx_errors++;
/* Try to restart the adaptor */
if (lp->last_restart == lp->stats.tx_packets) {
- if (i596_debug > 1)
- printk("Resetting board.\n");
+ DEB(DEB_SERIOUS,printk("%s: Resetting board.\n",
+ dev->name));
/* Shutdown and restart */
i596_reset(dev, lp, ioaddr);
} else {
/* Issue a channel attention signal */
- if (i596_debug > 1)
- printk("Kicking board.\n");
+ DEB(DEB_SERIOUS,printk("%s: Kicking board.\n",
+ dev->name));
lp->scb.command = CUC_START | RX_START;
CA(dev);
lp->last_restart = lp->stats.tx_packets;
@@ -814,8 +1034,8 @@
dev->tbusy = 0;
dev->trans_start = jiffies;
}
- if (i596_debug > 3)
- printk("%s: i596_start_xmit() called\n", dev->name);
+ DEB(DEB_STARTTX,printk("%s: i596_start_xmit(%x,%x) called\n", dev->name,
+ skb->len, (unsigned int)skb->data));
/* Block a timer-based transmit from overlapping. This could better be
done with atomic_swap(1, dev->tbusy), but set_bit() works as well. */
@@ -825,16 +1045,20 @@
short length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
dev->trans_start = jiffies;
- tx_cmd = (struct tx_cmd *) kmalloc((sizeof(struct tx_cmd) + sizeof(struct i596_tbd)), GFP_ATOMIC);
- if (tx_cmd == NULL) {
- printk("%s: i596_xmit Memory squeeze, dropping packet.\n", dev->name);
+ tx_cmd = lp->tx_cmds + lp->next_tx_cmd;
+ tbd = lp->tbds + lp->next_tx_cmd;
+
+ if (tx_cmd->cmd.command) {
+ DEB(DEB_ERRORS,printk ("%s: xmit ring full, dropping packet.\n",
+ dev->name));
lp->stats.tx_dropped++;
dev_kfree_skb(skb);
} else {
- struct i596_tbd *tbd = (struct i596_tbd *) (tx_cmd + 1);
- tx_cmd->tbd = WSWAPtbd(tbd);
- tbd->next = (struct i596_tbd *) I596_NULL;
+ if (++lp->next_tx_cmd == TX_RING_SIZE)
+ lp->next_tx_cmd = 0;
+ tx_cmd->tbd = WSWAPtbd(virt_to_bus(tbd));
+ tbd->next = I596_NULL;
tx_cmd->cmd.command = CMD_FLEX | CmdTx;
tx_cmd->skb = skb;
@@ -844,11 +1068,13 @@
tbd->pad = 0;
tbd->size = EOF | length;
- tbd->data = WSWAPchar(skb->data);
+ tbd->data = WSWAPchar(virt_to_bus(skb->data));
- if (i596_debug > 3)
- print_eth(skb->data);
- i596_add_cmd(dev, (struct i596_cmd *) tx_cmd);
+#ifdef __mc68000__
+ cache_push(virt_to_phys(skb->data), length);
+#endif
+ DEB(DEB_TXADDR,print_eth(skb->data, "tx-queued"));
+ i596_add_cmd(dev, &tx_cmd->cmd);
lp->stats.tx_packets++;
lp->stats.tx_bytes += length;
@@ -859,23 +1085,18 @@
return 0;
}
-
-static void print_eth(char *add)
+static void print_eth(unsigned char *add, char *str)
{
int i;
- printk("print_eth(%08x)\n", (unsigned int) add);
- printk("Dest ");
+ printk("i596 0x%p, ", add);
for (i = 0; i < 6; i++)
- printk(" %2.2X", (unsigned char) add[i]);
- printk("\n");
-
- printk("Source");
+ printk(" %02X", add[i + 6]);
+ printk(" -->");
for (i = 0; i < 6; i++)
- printk(" %2.2X", (unsigned char) add[i + 6]);
- printk("\n");
- printk("type %2.2X%2.2X\n", (unsigned char) add[12], (unsigned char) add[13]);
+ printk(" %02X", add[i]);
+ printk(" %02X%02X, %s\n", add[12], add[13], str);
}
__initfunc(int i82596_probe(struct device *dev))
@@ -883,24 +1104,25 @@
int i;
struct i596_private *lp;
char eth_addr[6];
+ static int probed = 0;
-#ifdef CONFIG_MVME16x_NET
+ if (probed)
+ return -ENODEV;
+ probed++;
+#ifdef ENABLE_MVME16x_NET
if (MACH_IS_MVME16x) {
- static int probed = 0;
-
+#ifdef XXX_FIXME
if (mvme16x_config & MVME16x_CONFIG_NO_ETHERNET) {
printk("Ethernet probe disabled - chip not present\n");
- return ENODEV;
+ return -ENODEV;
}
- if (probed)
- return ENODEV;
- probed++;
+#endif
memcpy(eth_addr, (void *) 0xfffc1f2c, 6); /* YUCK! Get addr from NOVRAM */
dev->base_addr = MVME_I596_BASE;
dev->irq = (unsigned) MVME16x_IRQ_I596;
}
#endif
-#ifdef CONFIG_BVME6000_NET
+#ifdef ENABLE_BVME6000_NET
if (MACH_IS_BVME6000) {
volatile unsigned char *rtc = (unsigned char *) BVME_RTC_BASE;
unsigned char msr = rtc[3];
@@ -914,69 +1136,84 @@
dev->irq = (unsigned) BVME_IRQ_I596;
}
#endif
-#ifdef CONFIG_APRICOT
- int checksum = 0;
- int ioaddr = 0x300;
+#ifdef ENABLE_APRICOT
+ {
+ int checksum = 0;
+ int ioaddr = 0x300;
- /* this is easy the ethernet interface can only be at 0x300 */
- /* first check nothing is already registered here */
+ /* this is easy the ethernet interface can only be at 0x300 */
+ /* first check nothing is already registered here */
- if (check_region(ioaddr, I596_TOTAL_SIZE))
- return ENODEV;
+ if (check_region(ioaddr, I596_TOTAL_SIZE)) {
+ printk("82596: IO address 0x%04x in use\n", ioaddr);
+ return -ENODEV;
+ }
- for (i = 0; i < 8; i++) {
- eth_addr[i] = inb(ioaddr + 8 + i);
- checksum += eth_addr[i];
- }
+ for (i = 0; i < 8; i++) {
+ eth_addr[i] = inb(ioaddr + 8 + i);
+ checksum += eth_addr[i];
+ }
- /* checksum is a multiple of 0x100, got this wrong first time
- some machines have 0x100, some 0x200. The DOS driver doesn't
- even bother with the checksum */
+ /* checksum is a multiple of 0x100, got this wrong first time
+ some machines have 0x100, some 0x200. The DOS driver doesn't
+ even bother with the checksum */
- if (checksum % 0x100)
- return ENODEV;
+ if (checksum % 0x100)
+ return -ENODEV;
- /* Some other boards trip the checksum.. but then appear as ether
- address 0. Trap these - AC */
+ /* Some other boards trip the checksum.. but then appear as
+ * ether address 0. Trap these - AC */
- if (memcmp(eth_addr, "\x00\x00\x49", 3) != 0)
- return ENODEV;
+ if (memcmp(eth_addr, "\x00\x00\x49", 3) != 0)
+ return -ENODEV;
- request_region(ioaddr, I596_TOTAL_SIZE, "i596");
+ request_region(ioaddr, I596_TOTAL_SIZE, "i596");
- dev->base_addr = ioaddr;
- dev->irq = 10;
+ dev->base_addr = ioaddr;
+ dev->irq = 10;
+ }
+#endif
+ dev->mem_start = (int)__get_free_pages(GFP_ATOMIC, 0);
+ if (!dev->mem_start) {
+#ifdef ENABLE_APRICOT
+ release_region(dev->base_addr, I596_TOTAL_SIZE);
#endif
+ return -ENOMEM;
+ }
+
ether_setup(dev);
- printk("%s: 82596 at %#3lx,", dev->name, dev->base_addr);
+ DEB(DEB_PROBE,printk("%s: 82596 at %#3lx,", dev->name, dev->base_addr));
for (i = 0; i < 6; i++)
- printk(" %2.2X", dev->dev_addr[i] = eth_addr[i]);
+ DEB(DEB_PROBE,printk(" %2.2X", dev->dev_addr[i] = eth_addr[i]));
- printk(" IRQ %d.\n", dev->irq);
+ DEB(DEB_PROBE,printk(" IRQ %d.\n", dev->irq));
- if (i596_debug > 0)
- printk(version);
+ DEB(DEB_PROBE,printk(version));
- /* The APRICOT-specific entries in the device structure. */
+ /* The 82596-specific entries in the device structure. */
dev->open = &i596_open;
dev->stop = &i596_close;
dev->hard_start_xmit = &i596_start_xmit;
dev->get_stats = &i596_get_stats;
dev->set_multicast_list = &set_multicast_list;
- dev->mem_start = (int) kmalloc(sizeof(struct i596_private) + 0x0f, GFP_KERNEL);
- /* align for scp */
- dev->priv = (void *) ((dev->mem_start + 0xf) & 0xfffffff0);
+ dev->priv = (void *)(dev->mem_start);
lp = (struct i596_private *) dev->priv;
- if (i596_debug)
- printk("%s: lp at 0x%08lx, lp->scb at 0x%08lx\n"
- ,dev->name, (unsigned long) lp, (unsigned long) &lp->scb);
+ DEB(DEB_INIT,printk ("%s: lp at 0x%08lx (%d bytes), lp->scb at 0x%08lx\n",
+ dev->name, (unsigned long)lp,
+ sizeof(struct i596_private), (unsigned long)&lp->scb));
memset((void *) lp, 0, sizeof(struct i596_private));
+
+#ifdef __mc68000__
+ cache_push(virt_to_phys((void *)(dev->mem_start)), 4096);
+ cache_clear(virt_to_phys((void *)(dev->mem_start)), 4096);
+ kernel_set_cachemode((void *)(dev->mem_start), 4096, IOMAP_NOCACHE_SER);
+#endif
lp->scb.command = 0;
- lp->scb.cmd = (struct i596_cmd *) I596_NULL;
- lp->scb.rfd = (struct i596_rfd *) I596_NULL;
+ lp->scb.cmd = I596_NULL;
+ lp->scb.rfd = I596_NULL;
return 0;
}
@@ -986,10 +1223,9 @@
struct device *dev = dev_id;
struct i596_private *lp;
short ioaddr;
- int boguscnt = 2000;
unsigned short status, ack_cmd = 0;
-#ifdef CONFIG_BVME6000_NET
+#ifdef ENABLE_BVME6000_NET
if (MACH_IS_BVME6000) {
if (*(char *) BVME_LOCAL_IRQ_STAT & BVME_ETHERR) {
i596_error(BVME_IRQ_I596, NULL, NULL);
@@ -1001,8 +1237,6 @@
printk("i596_interrupt(): irq %d for unknown device.\n", irq);
return;
}
- if (i596_debug > 3)
- printk("%s: i596_interrupt(): irq %d\n", dev->name, irq);
if (dev->interrupt)
printk("%s: Re-entering the interrupt handler.\n", dev->name);
@@ -1013,140 +1247,113 @@
lp = (struct i596_private *) dev->priv;
- while (lp->scb.command)
- if (--boguscnt == 0) {
- printk("%s: i596 interrupt, timeout status %4.4x command %4.4x.\n", dev->name, lp->scb.status, lp->scb.command);
- break;
- }
+ wait_cmd(dev,lp,100,"i596 interrupt, timeout");
status = lp->scb.status;
- if (i596_debug > 4)
- printk("%s: i596 interrupt, status %4.4x.\n", dev->name, status);
+ DEB(DEB_INTS,printk("%s: i596 interrupt, IRQ %d, status %4.4x.\n",
+ dev->name, irq, status));
ack_cmd = status & 0xf000;
if ((status & 0x8000) || (status & 0x2000)) {
struct i596_cmd *ptr;
- if ((i596_debug > 4) && (status & 0x8000))
- printk("%s: i596 interrupt completed command.\n", dev->name);
- if ((i596_debug > 4) && (status & 0x2000))
- printk("%s: i596 interrupt command unit inactive %x.\n", dev->name, status & 0x0700);
+ if ((status & 0x8000))
+ DEB(DEB_INTS,printk("%s: i596 interrupt completed command.\n", dev->name));
+ if ((status & 0x2000))
+ DEB(DEB_INTS,printk("%s: i596 interrupt command unit inactive %x.\n", dev->name, status & 0x0700));
- while ((lp->cmd_head != (struct i596_cmd *) I596_NULL) && (lp->cmd_head->status & STAT_C)) {
+ while ((lp->cmd_head != I596_NULL) && (lp->cmd_head->status & STAT_C)) {
ptr = lp->cmd_head;
- if (i596_debug > 2)
- printk("cmd_head->status = %04x, ->command = %04x\n",
- lp->cmd_head->status, lp->cmd_head->command);
- lp->cmd_head = WSWAPcmd(lp->cmd_head->next);
+ DEB(DEB_STATUS,printk("cmd_head->status = %04x, ->command = %04x\n",
+ lp->cmd_head->status, lp->cmd_head->command));
+ lp->cmd_head = ptr->v_next;
lp->cmd_backlog--;
switch ((ptr->command) & 0x7) {
case CmdTx:
- {
- struct tx_cmd *tx_cmd = (struct tx_cmd *) ptr;
- struct sk_buff *skb = tx_cmd->skb;
-
- if ((ptr->status) & STAT_OK) {
- if (i596_debug > 2)
- print_eth(skb->data);
- } else {
- lp->stats.tx_errors++;
- if ((ptr->status) & 0x0020)
- lp->stats.collisions++;
- if (!((ptr->status) & 0x0040))
- lp->stats.tx_heartbeat_errors++;
- if ((ptr->status) & 0x0400)
- lp->stats.tx_carrier_errors++;
- if ((ptr->status) & 0x0800)
- lp->stats.collisions++;
- if ((ptr->status) & 0x1000)
- lp->stats.tx_aborted_errors++;
- }
-
- dev_kfree_skb(skb);
-
- ptr->next = (struct i596_cmd *) I596_NULL;
- kfree(tx_cmd);
- break;
- }
- case CmdMulticastList:
- {
- ptr->next = (struct i596_cmd *) I596_NULL;
- kfree(ptr);
- break;
+ {
+ struct tx_cmd *tx_cmd = (struct tx_cmd *) ptr;
+ struct sk_buff *skb = tx_cmd->skb;
+
+ if ((ptr->status) & STAT_OK) {
+ DEB(DEB_TXADDR,print_eth(skb->data, "tx-done"));
+ } else {
+ lp->stats.tx_errors++;
+ if ((ptr->status) & 0x0020)
+ lp->stats.collisions++;
+ if (!((ptr->status) & 0x0040))
+ lp->stats.tx_heartbeat_errors++;
+ if ((ptr->status) & 0x0400)
+ lp->stats.tx_carrier_errors++;
+ if ((ptr->status) & 0x0800)
+ lp->stats.collisions++;
+ if ((ptr->status) & 0x1000)
+ lp->stats.tx_aborted_errors++;
}
+
+ dev_kfree_skb(skb);
+
+ tx_cmd->cmd.command = 0; /* Mark free */
+ break;
+ }
case CmdTDR:
- {
- unsigned long status = *((unsigned long *) (ptr + 1));
+ {
+ unsigned short status = ((struct tdr_cmd *)ptr)->status;
+
+ if (status & 0x8000) {
+ DEB(DEB_ANY,printk("%s: link ok.\n", dev->name));
+ } else {
+ if (status & 0x4000)
+ printk("%s: Transceiver problem.\n", dev->name);
+ if (status & 0x2000)
+ printk("%s: Termination problem.\n", dev->name);
+ if (status & 0x1000)
+ printk("%s: Short circuit.\n", dev->name);
- if (status & 0x8000) {
- if (i596_debug > 3)
- printk("%s: link ok.\n", dev->name);
- } else {
- if (status & 0x4000)
- printk("%s: Transceiver problem.\n", dev->name);
- if (status & 0x2000)
- printk("%s: Termination problem.\n", dev->name);
- if (status & 0x1000)
- printk("%s: Short circuit.\n", dev->name);
-
- if (i596_debug > 1)
- printk("%s: Time %ld.\n", dev->name, status & 0x07ff);
- }
- break;
+ DEB(DEB_TDR,printk("%s: Time %d.\n", dev->name, status & 0x07ff));
}
+ break;
+ }
case CmdConfigure:
- {
- ptr->next = (struct i596_cmd *) I596_NULL;
- /* Zap command so set_multicast_list() knows it is free */
- ptr->command = 0;
- break;
- }
- default:
- ptr->next = (struct i596_cmd *) I596_NULL;
+ /* Zap command so set_multicast_list() knows it is free */
+ ptr->command = 0;
+ break;
}
+ ptr->v_next = ptr->b_next = I596_NULL;
lp->last_cmd = jiffies;
}
ptr = lp->cmd_head;
- while ((ptr != (struct i596_cmd *) I596_NULL) && (ptr != lp->cmd_tail)) {
+ while ((ptr != I596_NULL) && (ptr != lp->cmd_tail)) {
ptr->command &= 0x1fff;
- ptr = WSWAPcmd(ptr->next);
+ ptr = ptr->v_next;
}
- if ((lp->cmd_head != (struct i596_cmd *) I596_NULL) && (dev->start))
+ if ((lp->cmd_head != I596_NULL) && (dev->start))
ack_cmd |= CUC_START;
- lp->scb.cmd = WSWAPcmd(lp->cmd_head);
+ lp->scb.cmd = WSWAPcmd(virt_to_bus(&lp->cmd_head->status));
}
if ((status & 0x1000) || (status & 0x4000)) {
- if ((i596_debug > 4) && (status & 0x4000))
- printk("%s: i596 interrupt received a frame.\n", dev->name);
+ if ((status & 0x4000))
+ DEB(DEB_INTS,printk("%s: i596 interrupt received a frame.\n", dev->name));
+ i596_rx(dev);
/* Only RX_START if stopped - RGH 07-07-96 */
if (status & 0x1000) {
- if (dev->start)
+ if (dev->start) {
+ DEB(DEB_ERRORS,printk("%s: i596 interrupt receive unit inactive, status 0x%x\n", dev->name, status));
ack_cmd |= RX_START;
- if (i596_debug > 1)
- printk("%s: i596 interrupt receive unit inactive %x.\n", dev->name, status & 0x00f0);
+ lp->stats.rx_errors++;
+ lp->stats.rx_fifo_errors++;
+ rebuild_rx_bufs(dev);
+ }
}
- i596_rx(dev);
}
- /* acknowledge the interrupt */
-
-/* COMMENTED OUT <<<<<
- if ((lp->scb.cmd != (struct i596_cmd *) I596_NULL) && (dev->start))
- ack_cmd |= CUC_START;
- */
- boguscnt = 1000;
- while (lp->scb.command)
- if (--boguscnt == 0) {
- printk("%s: i596 interrupt, timeout status %4.4x command %4.4x.\n", dev->name, lp->scb.status, lp->scb.command);
- break;
- }
+ wait_cmd(dev,lp,100,"i596 interrupt, timeout");
lp->scb.command = ack_cmd;
-#ifdef CONFIG_MVME16x_NET
+#ifdef ENABLE_MVME16x_NET
if (MACH_IS_MVME16x) {
/* Ack the interrupt */
@@ -1155,7 +1362,7 @@
pcc2[0x2a] |= 0x08;
}
#endif
-#ifdef CONFIG_BVME6000_NET
+#ifdef ENABLE_BVME6000_NET
if (MACH_IS_BVME6000) {
volatile unsigned char *ethirq = (unsigned char *) BVME_ETHIRQ_REG;
@@ -1163,14 +1370,13 @@
*ethirq = 3;
}
#endif
-#ifdef CONFIG_APRICOT
+#ifdef ENABLE_APRICOT
(void) inb(ioaddr + 0x10);
outb(4, ioaddr + 0xf);
#endif
CA(dev);
- if (i596_debug > 4)
- printk("%s: exiting interrupt.\n", dev->name);
+ DEB(DEB_INTS,printk("%s: exiting interrupt.\n", dev->name));
dev->interrupt = 0;
return;
@@ -1179,41 +1385,27 @@
static int i596_close(struct device *dev)
{
struct i596_private *lp = (struct i596_private *) dev->priv;
- int boguscnt = 2000;
unsigned long flags;
dev->start = 0;
dev->tbusy = 1;
- if (i596_debug > 1)
- printk("%s: Shutting down ethercard, status was %4.4x.\n",
- dev->name, lp->scb.status);
+ DEB(DEB_INIT,printk("%s: Shutting down ethercard, status was %4.4x.\n",
+ dev->name, lp->scb.status));
save_flags(flags);
cli();
- while (lp->scb.command)
- if (--boguscnt == 0) {
- printk("%s: close1 timed out with status %4.4x, cmd %4.4x.\n",
- dev->name, lp->scb.status, lp->scb.command);
- break;
- }
+ wait_cmd(dev,lp,100,"close1 timed out");
lp->scb.command = CUC_ABORT | RX_ABORT;
CA(dev);
- boguscnt = 2000;
-
- while (lp->scb.command)
- if (--boguscnt == 0) {
- printk("%s: close2 timed out with status %4.4x, cmd %4.4x.\n",
- dev->name, lp->scb.status, lp->scb.command);
- break;
- }
+ wait_cmd(dev,lp,100,"close2 timed out");
restore_flags(flags);
+ DEB(DEB_STRUCT,i596_display_data(dev));
+ i596_cleanup_cmd(dev,lp);
- i596_cleanup_cmd(lp);
-
-#ifdef CONFIG_MVME16x_NET
+#ifdef ENABLE_MVME16x_NET
if (MACH_IS_MVME16x) {
volatile unsigned char *pcc2 = (unsigned char *) 0xfff42000;
@@ -1223,7 +1415,7 @@
pcc2[0x2b] = 0x40; /* Set snooping bits now! */
}
#endif
-#ifdef CONFIG_BVME6000_NET
+#ifdef ENABLE_BVME6000_NET
if (MACH_IS_BVME6000) {
volatile unsigned char *ethirq = (unsigned char *) BVME_ETHIRQ_REG;
@@ -1253,57 +1445,60 @@
static void set_multicast_list(struct device *dev)
{
struct i596_private *lp = (struct i596_private *) dev->priv;
- struct i596_cmd *cmd;
- int config = 0;
+ int config = 0, cnt;
- if (i596_debug > 1)
- printk("%s: set multicast list, %d entries, promisc %s, allmulti %s\n", dev->name, dev->mc_count, dev->flags & IFF_PROMISC ? "ON" : "OFF", dev->flags & IFF_ALLMULTI ? "ON" : "OFF");
+ DEB(DEB_MULTI,printk("%s: set multicast list, %d entries, promisc %s, allmulti %s\n", dev->name, dev->mc_count, dev->flags & IFF_PROMISC ? "ON" : "OFF", dev->flags & IFF_ALLMULTI ? "ON" : "OFF"));
- if ((dev->flags & IFF_PROMISC) && !(lp->i596_config[8] & 0x01)) {
- lp->i596_config[8] |= 0x01;
+ if ((dev->flags & IFF_PROMISC) && !(lp->cf_cmd.i596_config[8] & 0x01)) {
+ lp->cf_cmd.i596_config[8] |= 0x01;
config = 1;
}
- if (!(dev->flags & IFF_PROMISC) && (lp->i596_config[8] & 0x01)) {
- lp->i596_config[8] &= ~0x01;
+ if (!(dev->flags & IFF_PROMISC) && (lp->cf_cmd.i596_config[8] & 0x01)) {
+ lp->cf_cmd.i596_config[8] &= ~0x01;
config = 1;
}
- if ((dev->flags & IFF_ALLMULTI) && (lp->i596_config[11] & 0x20)) {
- lp->i596_config[11] &= ~0x20;
+ if ((dev->flags & IFF_ALLMULTI) && (lp->cf_cmd.i596_config[11] & 0x20)) {
+ lp->cf_cmd.i596_config[11] &= ~0x20;
config = 1;
}
- if (!(dev->flags & IFF_ALLMULTI) && !(lp->i596_config[11] & 0x20)) {
- lp->i596_config[11] |= 0x20;
+ if (!(dev->flags & IFF_ALLMULTI) && !(lp->cf_cmd.i596_config[11] & 0x20)) {
+ lp->cf_cmd.i596_config[11] |= 0x20;
config = 1;
}
if (config) {
- if (lp->set_conf.command)
+ if (lp->cf_cmd.cmd.command)
printk("%s: config change request already queued\n",
dev->name);
else {
- lp->set_conf.command = CmdConfigure;
- i596_add_cmd(dev, &lp->set_conf);
+ lp->cf_cmd.cmd.command = CmdConfigure;
+ i596_add_cmd(dev, &lp->cf_cmd.cmd);
}
}
+
+ cnt = dev->mc_count;
+ if (cnt > MAX_MC_CNT)
+ {
+ cnt = MAX_MC_CNT;
+ printk("%s: Only %d multicast addresses supported",
+ dev->name, cnt);
+ }
+
if (dev->mc_count > 0) {
struct dev_mc_list *dmi;
unsigned char *cp;
- cmd = (struct i596_cmd *) kmalloc(sizeof(struct i596_cmd) + 2 + dev->mc_count * 6, GFP_ATOMIC);
- if (cmd == NULL) {
- printk("%s: set_multicast Memory squeeze.\n", dev->name);
- return;
- }
- cmd->command = CmdMulticastList;
- *((unsigned short *) (cmd + 1)) = dev->mc_count * 6;
- cp = ((unsigned char *) (cmd + 1)) + 2;
- for (dmi = dev->mc_list; dmi != NULL; dmi = dmi->next) {
+ struct mc_cmd *cmd;
+
+ cmd = &lp->mc_cmd;
+ cmd->cmd.command = CmdMulticastList;
+ cmd->mc_cnt = dev->mc_count * 6;
+ cp = cmd->mc_addrs;
+ for (dmi = dev->mc_list; cnt && dmi != NULL; dmi = dmi->next, cnt--, cp += 6) {
memcpy(cp, dmi->dmi_addr, 6);
if (i596_debug > 1)
- printk("%s: Adding address %02x:%02x:%02x:%02x:%02x:%02x\n", dev->name, *(cp + 0), *(cp + 1), *(cp + 2), *(cp + 3), *(cp + 4), *(cp + 5));
- cp += 6;
+ DEB(DEB_MULTI,printk("%s: Adding address %02x:%02x:%02x:%02x:%02x:%02x\n",
+ dev->name, cp[0],cp[1],cp[2],cp[3],cp[4],cp[5]));
}
- if (i596_debug > 2)
- print_eth(((char *) (cmd + 1)) + 2);
- i596_add_cmd(dev, cmd);
+ i596_add_cmd(dev, &cmd->cmd);
}
}
@@ -1311,40 +1506,58 @@
static unsigned int i596_portlist[] __initdata =
{0x300, 0};
struct netdev_entry i596_drv =
-{"apricot", i82596_probe, I596_TOTAL_SIZE, apricot_portlist};
+{"i82596", i82596_probe, I596_TOTAL_SIZE, i596_portlist};
#endif
#ifdef MODULE
static char devicename[9] =
{0,};
-static struct device dev_apricot =
+static struct device dev_82596 =
{
- devicename, /* device name inserted by /linux/drivers/net/net_init.c */
+ devicename, /* device name inserted by drivers/net/net_init.c */
0, 0, 0, 0,
- 0x300, 10,
+ 0, 0, /* base, irq */
0, 0, 0, NULL, i82596_probe};
+#ifdef ENABLE_APRICOT
static int io = 0x300;
static int irq = 10;
MODULE_PARM(irq, "i");
+#endif
+
+MODULE_PARM(debug, "i");
+static int debug = -1;
int init_module(void)
{
- dev_apricot.base_addr = io;
- dev_apricot.irq = irq;
- if (register_netdev(&dev_apricot) != 0)
+#ifdef ENABLE_APRICOT
+ dev_82596.base_addr = io;
+ dev_82596.irq = irq;
+#endif
+ if (debug >= 0)
+ i596_debug = debug;
+ if (register_netdev(&dev_82596) != 0)
return -EIO;
return 0;
}
void cleanup_module(void)
{
- unregister_netdev(&dev_apricot);
- kfree((void *) dev_apricot.mem_start);
- dev_apricot.priv = NULL;
+ unregister_netdev(&dev_82596);
+#ifdef __mc68000__
+ /* XXX This assumes default cache mode to be IOMAP_FULL_CACHING,
+ * XXX which may be invalid (CONFIG_060_WRITETHROUGH)
+ */
+ kernel_set_cachemode((void *)(dev_82596.mem_start), 4096,
+ IOMAP_FULL_CACHING);
+#endif
+ free_page ((u32)(dev_82596.mem_start));
+ dev_82596.priv = NULL;
+#ifdef ENABLE_APRICOT
/* If we don't do this, we can't re-insmod it later. */
- release_region(dev_apricot.base_addr, I596_TOTAL_SIZE);
+ release_region(dev_82596.base_addr, I596_TOTAL_SIZE);
+#endif
}
#endif /* MODULE */
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)