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minix/drivers/fxp/fxp.c
David van Moolenbroek 431cd9f69c fxp: resolve Coverity warnings 
This removes some unused and unsupported features, and leaves in support
for another currently unused feature that might be used in the future.
2012-08-06 16:18:38 +00:00

2201 lines
51 KiB
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/*
* fxp.c
*
* This file contains an ethernet device driver for Intel 82557, 82558,
* 82559, 82550, and 82562 fast ethernet controllers.
*
* Created: Nov 2004 by Philip Homburg <philip@f-mnx.phicoh.com>
*/
#include <minix/drivers.h>
#include <minix/netdriver.h>
#include <stdlib.h>
#include <net/hton.h>
#include <net/gen/ether.h>
#include <net/gen/eth_io.h>
#include <machine/pci.h>
#include <minix/ds.h>
#include <minix/endpoint.h>
#include <timers.h>
#define debug 0
#define RAND_UPDATE /**/
#define printW() ((void)0)
#include "assert.h"
#include "fxp.h"
#include "mii.h"
/* Number of receive buffers */
#define N_RX_BUF 40
/* Number of transmit buffers */
#define N_TX_BUF 4
/* I/O vectors are handled IOVEC_NR entries at a time. */
#define IOVEC_NR 16
/* Configuration */
#define FXP_ENVVAR "FXPETH"
typedef int irq_hook_t;
/* ignore interrupt for the moment */
#define interrupt(x) do { } while(0)
static union tmpbuf
{
char pad[4096];
struct cbl_conf cc;
struct ias ias;
} *tmpbufp;
typedef struct fxp
{
port_t fxp_base_port;
int fxp_mode;
int fxp_got_int;
int fxp_send_int;
int fxp_flags;
int fxp_client;
int fxp_features; /* Needed? */
int fxp_irq;
int fxp_type; /* What kind of hardware */
int fxp_ms_regs; /* Master/slave registers */
int fxp_ee_addrlen; /* #EEPROM address bits */
int fxp_tx_alive;
int fxp_need_reset;
/* Rx */
vir_bytes fxp_read_s;
int fxp_rx_nbuf;
int fxp_rx_bufsize;
struct rfd *fxp_rx_buf;
phys_bytes fxp_rx_busaddr;
int fxp_rx_head;
int fxp_rx_need_restart;
int fxp_need_conf; /* Re-configure after draining send
* queue
*/
/* Tx */
int fxp_tx_nbuf;
int fxp_tx_bufsize;
struct tx *fxp_tx_buf;
phys_bytes fxp_tx_busaddr;
int fxp_tx_idle;
int fxp_tx_head;
int fxp_tx_tail;
int fxp_tx_threshold;
/* Link status */
int fxp_report_link;
int fxp_link_up;
int fxp_mii_busy;
u16_t fxp_mii_scr;
/* PCI related */
int fxp_seen; /* TRUE iff device available */
/* 'large' items */
irq_hook_t fxp_hook;
ether_addr_t fxp_address;
message fxp_rx_mess;
message fxp_tx_mess;
struct sc fxp_stat;
u8_t fxp_conf_bytes[CC_BYTES_NR];
char fxp_name[sizeof("fxp#n")];
iovec_t fxp_iovec[IOVEC_NR];
iovec_s_t fxp_iovec_s[IOVEC_NR];
}
fxp_t;
/* fxp_mode */
#define FM_DISABLED 0x0
#define FM_ENABLED 0x1
/* fxp_flags */
#define FF_EMPTY 0x000
#define FF_PACK_SENT 0x001
#define FF_PACK_RECV 0x002
#define FF_SEND_AVAIL 0x004
#define FF_READING 0x010
#define FF_PROMISC 0x040
#define FF_MULTI 0x080
#define FF_BROAD 0x100
#define FF_ENABLED 0x200
/* fxp_features */
#define FFE_NONE 0x0
/* fxp_type */
#define FT_UNKNOWN 0x0
#define FT_82557 0x1
#define FT_82558A 0x2
#define FT_82559 0x4
#define FT_82801 0x8
static int fxp_instance;
static fxp_t *fxp_state;
static timer_t fxp_watchdog;
static u32_t system_hz;
#define fxp_inb(port, offset) (do_inb((port) + (offset)))
#define fxp_inl(port, offset) (do_inl((port) + (offset)))
#define fxp_outb(port, offset, value) (do_outb((port) + (offset), (value)))
#define fxp_outl(port, offset, value) (do_outl((port) + (offset), (value)))
static void fxp_init(message *mp);
static void fxp_pci_conf(void);
static int fxp_probe(fxp_t *fp, int skip);
static void fxp_conf_hw(fxp_t *fp);
static void fxp_init_hw(fxp_t *fp);
static void fxp_init_buf(fxp_t *fp);
static void fxp_reset_hw(fxp_t *fp);
static void fxp_confaddr(fxp_t *fp);
static void fxp_rec_mode(fxp_t *fp);
static void fxp_writev_s(const message *mp, int from_int);
static void fxp_readv_s(message *mp, int from_int);
static void fxp_do_conf(fxp_t *fp);
static void fxp_cu_ptr_cmd(fxp_t *fp, int cmd, phys_bytes bus_addr, int
check_idle);
static void fxp_ru_ptr_cmd(fxp_t *fp, int cmd, phys_bytes bus_addr, int
check_idle);
static void fxp_restart_ru(fxp_t *fp);
static void fxp_getstat_s(message *mp);
static void fxp_handler(fxp_t *fp);
static void fxp_check_ints(fxp_t *fp);
static void fxp_watchdog_f(timer_t *tp);
static int fxp_link_changed(fxp_t *fp);
static void fxp_report_link(fxp_t *fp);
static void reply(fxp_t *fp);
static void mess_reply(message *req, message *reply);
static u16_t eeprom_read(fxp_t *fp, int reg);
static void eeprom_addrsize(fxp_t *fp);
static u16_t mii_read(fxp_t *fp, int reg);
static u8_t do_inb(port_t port);
static u32_t do_inl(port_t port);
static void do_outb(port_t port, u8_t v);
static void do_outl(port_t port, u32_t v);
static void tell_dev(vir_bytes start, size_t size, int pci_bus, int
pci_dev, int pci_func);
static void handle_hw_intr(void)
{
int r;
fxp_t *fp;
fp= fxp_state;
if (fp->fxp_mode != FM_ENABLED)
return;
fxp_handler(fp);
r= sys_irqenable(&fp->fxp_hook);
if (r != OK) {
panic("unable enable interrupts: %d", r);
}
if (!fp->fxp_got_int)
return;
fp->fxp_got_int= 0;
assert(fp->fxp_flags & FF_ENABLED);
fxp_check_ints(fp);
}
/* SEF functions and variables. */
static void sef_local_startup(void);
static int sef_cb_init_fresh(int type, sef_init_info_t *info);
static void sef_cb_signal_handler(int signo);
/*===========================================================================*
* main *
*===========================================================================*/
int main(int argc, char *argv[])
{
message m;
int ipc_status;
int r;
/* SEF local startup. */
env_setargs(argc, argv);
sef_local_startup();
while (TRUE)
{
if ((r= netdriver_receive(ANY, &m, &ipc_status)) != OK)
panic("netdriver_receive failed: %d", r);
if (is_ipc_notify(ipc_status)) {
switch (_ENDPOINT_P(m.m_source)) {
case HARDWARE:
handle_hw_intr();
break;
case CLOCK:
expire_timers(m.NOTIFY_TIMESTAMP);
break;
default:
panic(" illegal notify from: %d", m.m_source);
}
/* get new message */
continue;
}
switch (m.m_type)
{
case DL_WRITEV_S: fxp_writev_s(&m, FALSE); break;
case DL_READV_S: fxp_readv_s(&m, FALSE); break;
case DL_CONF: fxp_init(&m); break;
case DL_GETSTAT_S: fxp_getstat_s(&m); break;
default:
panic(" illegal message: %d", m.m_type);
}
}
}
/*===========================================================================*
* sef_local_startup *
*===========================================================================*/
static void sef_local_startup()
{
/* Register init callbacks. */
sef_setcb_init_fresh(sef_cb_init_fresh);
sef_setcb_init_lu(sef_cb_init_fresh);
sef_setcb_init_restart(sef_cb_init_fresh);
/* Register live update callbacks. */
sef_setcb_lu_prepare(sef_cb_lu_prepare_always_ready);
sef_setcb_lu_state_isvalid(sef_cb_lu_state_isvalid_workfree);
/* Register signal callbacks. */
sef_setcb_signal_handler(sef_cb_signal_handler);
/* Let SEF perform startup. */
sef_startup();
}
/*===========================================================================*
* sef_cb_init_fresh *
*===========================================================================*/
static int sef_cb_init_fresh(int UNUSED(type), sef_init_info_t *UNUSED(info))
{
/* Initialize the fxp driver. */
long v;
int r;
vir_bytes ft;
system_hz = sys_hz();
v = 0;
(void) env_parse("instance", "d", 0, &v, 0, 255);
fxp_instance = (int) v;
ft = sizeof(*fxp_state);
if(!(fxp_state = alloc_contig(ft, 0, NULL)))
panic("couldn't allocate table: %d", ENOMEM);
memset(fxp_state, 0, ft);
if((r=tsc_calibrate()) != OK)
panic("tsc_calibrate failed: %d", r);
/* Announce we are up! */
netdriver_announce();
return(OK);
}
/*===========================================================================*
* sef_cb_signal_handler *
*===========================================================================*/
static void sef_cb_signal_handler(int signo)
{
port_t port;
fxp_t *fp;
/* Only check for termination signal, ignore anything else. */
if (signo != SIGTERM) return;
fp= fxp_state;
if (fp->fxp_mode == FM_ENABLED && (fp->fxp_flags & FF_ENABLED)) {
port= fp->fxp_base_port;
/* Reset device */
if (debug)
printf("%s: resetting device\n", fp->fxp_name);
fxp_outl(port, CSR_PORT, CP_CMD_SOFT_RESET);
}
exit(0);
}
/*===========================================================================*
* fxp_init *
*===========================================================================*/
static void fxp_init(mp)
message *mp;
{
static int first_time= 1;
fxp_t *fp;
message reply_mess;
if (first_time)
{
first_time= 0;
fxp_pci_conf(); /* Configure PCI devices. */
init_timer(&fxp_watchdog);
set_timer(&fxp_watchdog, system_hz, fxp_watchdog_f, 0);
}
fp= fxp_state;
if (fp->fxp_mode == FM_DISABLED)
{
/* This is the default, try to (re)locate the device. */
fxp_conf_hw(fp);
if (fp->fxp_mode == FM_DISABLED)
{
/* Probe failed, or the device is configured off. */
reply_mess.m_type= DL_CONF_REPLY;
reply_mess.DL_STAT= ENXIO;
mess_reply(mp, &reply_mess);
return;
}
if (fp->fxp_mode == FM_ENABLED)
fxp_init_hw(fp);
fxp_report_link(fp);
}
assert(fp->fxp_mode == FM_ENABLED);
assert(fp->fxp_flags & FF_ENABLED);
fp->fxp_flags &= ~(FF_PROMISC | FF_MULTI | FF_BROAD);
if (mp->DL_MODE & DL_PROMISC_REQ)
fp->fxp_flags |= FF_PROMISC;
if (mp->DL_MODE & DL_MULTI_REQ)
fp->fxp_flags |= FF_MULTI;
if (mp->DL_MODE & DL_BROAD_REQ)
fp->fxp_flags |= FF_BROAD;
fxp_rec_mode(fp);
reply_mess.m_type = DL_CONF_REPLY;
reply_mess.DL_STAT = OK;
*(ether_addr_t *) reply_mess.DL_HWADDR = fp->fxp_address;
mess_reply(mp, &reply_mess);
}
/*===========================================================================*
* fxp_pci_conf *
*===========================================================================*/
static void fxp_pci_conf()
{
fxp_t *fp;
fp= fxp_state;
strlcpy(fp->fxp_name, "fxp#0", sizeof(fp->fxp_name));
fp->fxp_name[4] += fxp_instance;
fp->fxp_seen= FALSE;
fp->fxp_features= FFE_NONE;
pci_init();
if (fxp_probe(fp, fxp_instance))
fp->fxp_seen= TRUE;
}
/*===========================================================================*
* fxp_probe *
*===========================================================================*/
static int fxp_probe(fxp_t *fp, int skip)
{
int r, devind;
u16_t vid, did;
u32_t bar;
u8_t ilr, rev;
char *str;
#if VERBOSE
char *dname;
#endif
r= pci_first_dev(&devind, &vid, &did);
if (r == 0)
return FALSE;
while (skip--)
{
r= pci_next_dev(&devind, &vid, &did);
if (!r)
return FALSE;
}
#if VERBOSE
dname= pci_dev_name(vid, did);
if (!dname)
dname= "unknown device";
printf("%s: %s (%04x/%04x) at %s\n",
fp->fxp_name, dname, vid, did, pci_slot_name(devind));
#endif
pci_reserve(devind);
bar= pci_attr_r32(devind, PCI_BAR_2) & 0xffffffe0;
if (bar < 0x400) {
panic("fxp_probe: base address is not properly configured");
}
fp->fxp_base_port= bar;
ilr= pci_attr_r8(devind, PCI_ILR);
fp->fxp_irq= ilr;
if (debug)
{
printf("%s: using I/O address 0x%lx, IRQ %d\n",
fp->fxp_name, (unsigned long)bar, ilr);
}
rev= pci_attr_r8(devind, PCI_REV);
str= NULL;
fp->fxp_type= FT_UNKNOWN;
switch(rev)
{
case FXP_REV_82557A: str= "82557A"; /* 0x01 */
fp->fxp_type= FT_82557;
break;
case FXP_REV_82557B: str= "82557B"; break; /* 0x02 */
case FXP_REV_82557C: str= "82557C"; break; /* 0x03 */
case FXP_REV_82558A: str= "82558A"; /* 0x04 */
fp->fxp_type= FT_82558A;
break;
case FXP_REV_82558B: str= "82558B"; /* 0x05 */
fp->fxp_type= FT_82559;
break;
case FXP_REV_82559A: str= "82559A"; break; /* 0x06 */
case FXP_REV_82559B: str= "82559B"; break; /* 0x07 */
case FXP_REV_82559C: str= "82559C"; /* 0x08 */
fp->fxp_type= FT_82559;
break;
case FXP_REV_82559ERA: str= "82559ER-A"; /* 0x09 */
fp->fxp_type= FT_82559;
break;
case FXP_REV_82550_1: str= "82550(1)"; /* 0x0C */
fp->fxp_type= FT_82559;
break;
case FXP_REV_82550_2: str= "82550(2)"; /* 0x0D */
fp->fxp_type= FT_82559;
break;
case FXP_REV_82550_3: str= "82550(3)"; /* 0x0E */
fp->fxp_type= FT_82559;
break;
case FXP_REV_82551_1: str= "82551(1)"; /* 0x0F */
fp->fxp_type= FT_82559;
break;
case FXP_REV_82551_2: str= "82551(2)"; /* 0x10 */
fp->fxp_type= FT_82559;
break;
case FXP_REV_82801CAM: str= "82801CAM"; /* 0x42 */
fp->fxp_type= FT_82801;
break;
case FXP_REV_82801DB: str= "82801DB"; /* 0x81 */
fp->fxp_type= FT_82801;
break;
}
#if VERBOSE
if (str)
printf("%s: device revision: %s\n", fp->fxp_name, str);
else
printf("%s: unknown revision: 0x%x\n", fp->fxp_name, rev);
#endif
if (fp->fxp_type == FT_UNKNOWN)
{
printf("fxp_probe: device is not supported by this driver\n");
return FALSE;
}
return TRUE;
}
/*===========================================================================*
* fxp_conf_hw *
*===========================================================================*/
static void fxp_conf_hw(fxp_t *fp)
{
#if VERBOSE
int i;
#endif
fp->fxp_mode= FM_DISABLED; /* Superfluous */
if (!fp->fxp_seen)
return;
/* PCI device is present */
fp->fxp_mode= FM_ENABLED;
fp->fxp_flags= FF_EMPTY;
fp->fxp_got_int= 0;
fp->fxp_send_int= 0;
fp->fxp_ee_addrlen= 0; /* Unknown */
fp->fxp_need_reset= 0;
fp->fxp_report_link= 0;
fp->fxp_link_up= -1; /* Unknown */
fp->fxp_mii_busy= 0;
fp->fxp_read_s= 0;
fp->fxp_rx_need_restart= 0;
fp->fxp_need_conf= 0;
fp->fxp_tx_head= 0;
fp->fxp_tx_tail= 0;
fp->fxp_tx_alive= 0;
fp->fxp_tx_threshold= TXTT_MIN;
/* Try to come up with a sensible configuration for the current
* device. Unfortunately every device is different, defaults are
* not always zero, and some fields are re-used with a completely
* different interpretation. We start out with a sensible default
* for all devices and then add device specific changes.
*/
fp->fxp_conf_bytes[0]= CC_BYTES_NR;
fp->fxp_conf_bytes[1]= CTL_DEFAULT | CRL_DEFAULT;
fp->fxp_conf_bytes[2]= CAI_DEFAULT;
fp->fxp_conf_bytes[3]= 0;
fp->fxp_conf_bytes[4]= 0;
fp->fxp_conf_bytes[5]= 0;
fp->fxp_conf_bytes[6]= CCB6_ESC | CCB6_ETCB | CCB6_RES;
fp->fxp_conf_bytes[7]= CUR_1;
fp->fxp_conf_bytes[8]= CCB8_503_MII;
fp->fxp_conf_bytes[9]= 0;
fp->fxp_conf_bytes[10]= CLB_NORMAL | CPAL_DEFAULT | CCB10_NSAI |
CCB10_RES1;
fp->fxp_conf_bytes[11]= 0;
fp->fxp_conf_bytes[12]= CIS_DEFAULT;
fp->fxp_conf_bytes[13]= CCB13_DEFAULT;
fp->fxp_conf_bytes[14]= CCB14_DEFAULT;
fp->fxp_conf_bytes[15]= CCB15_RES1 | CCB15_RES2;
fp->fxp_conf_bytes[16]= CCB16_DEFAULT;
fp->fxp_conf_bytes[17]= CCB17_DEFAULT;
fp->fxp_conf_bytes[18]= CCB18_RES1 | CCB18_PFCT | CCB18_PE;
fp->fxp_conf_bytes[19]= CCB19_FDPE;
fp->fxp_conf_bytes[20]= CCB20_PFCL | CCB20_RES1;
fp->fxp_conf_bytes[21]= CCB21_RES21;
#if VERBOSE
for (i= 0; i<CC_BYTES_NR; i++)
printf("%d: %0x, ", i, fp->fxp_conf_bytes[i]);
printf("\n");
#endif
switch(fp->fxp_type)
{
case FT_82557:
break;
case FT_82558A:
case FT_82559:
case FT_82801:
fp->fxp_conf_bytes[18] |= CCB18_LROK;
if (fp->fxp_type == FT_82801)
{
fp->fxp_conf_bytes[6] = 0xba; /* ctrl 1 */
fp->fxp_conf_bytes[15] = 0x48; /* promiscuous */
fp->fxp_conf_bytes[21] = 0x05; /* mc_all */
}
break;
default:
panic("fxp_conf_hw: bad device type: %d", fp->fxp_type);
}
/* Assume an 82555 (compatible) PHY. The should be changed for
* 82557 NICs with different PHYs
*/
fp->fxp_ms_regs = 0; /* No master/slave registers. */
#if VERBOSE
for (i= 0; i<CC_BYTES_NR; i++)
printf("%d: %0x, ", i, fp->fxp_conf_bytes[i]);
printf("\n");
#endif
}
/*===========================================================================*
* fxp_init_hw *
*===========================================================================*/
static void fxp_init_hw(fp)
fxp_t *fp;
{
int i, r, isr;
port_t port;
phys_bytes bus_addr;
port= fp->fxp_base_port;
fxp_init_buf(fp);
fp->fxp_flags = FF_EMPTY;
fp->fxp_flags |= FF_ENABLED;
/* Set the interrupt handler and policy. Do not automatically
* reenable interrupts. Return the IRQ line number on interrupts.
*/
fp->fxp_hook = fp->fxp_irq;
r= sys_irqsetpolicy(fp->fxp_irq, 0, &fp->fxp_hook);
if (r != OK)
panic("sys_irqsetpolicy failed: %d", r);
fxp_reset_hw(fp);
r= sys_irqenable(&fp->fxp_hook);
if (r != OK)
panic("sys_irqenable failed: %d", r);
/* Reset PHY? */
fxp_do_conf(fp);
/* Set pointer to statistical counters */
r= sys_umap(SELF, VM_D, (vir_bytes)&fp->fxp_stat, sizeof(fp->fxp_stat),
&bus_addr);
if (r != OK)
panic("sys_umap failed: %d", r);
fxp_cu_ptr_cmd(fp, SC_CU_LOAD_DCA, bus_addr, TRUE /* check idle */);
/* Ack previous interrupts */
isr= fxp_inb(port, SCB_INT_STAT);
fxp_outb(port, SCB_INT_STAT, isr);
/* Enable interrupts */
fxp_outb(port, SCB_INT_MASK, 0);
fxp_ru_ptr_cmd(fp, SC_RU_START, fp->fxp_rx_busaddr,
TRUE /* check idle */);
fxp_confaddr(fp);
if (debug)
{
printf("%s: Ethernet address ", fp->fxp_name);
for (i= 0; i < 6; i++)
{
printf("%x%c", fp->fxp_address.ea_addr[i],
i < 5 ? ':' : '\n');
}
}
}
/*===========================================================================*
* fxp_init_buf *
*===========================================================================*/
static void fxp_init_buf(fp)
fxp_t *fp;
{
size_t rx_totbufsize, tx_totbufsize, tot_bufsize, alloc_bufsize;
char *alloc_buf;
phys_bytes buf, bus_addr;
int i, r;
struct rfd *rfdp;
struct tx *txp;
phys_bytes ph;
fp->fxp_rx_nbuf= N_RX_BUF;
rx_totbufsize= fp->fxp_rx_nbuf * sizeof(struct rfd);
fp->fxp_rx_bufsize= rx_totbufsize;
fp->fxp_tx_nbuf= N_TX_BUF;
tx_totbufsize= fp->fxp_tx_nbuf * sizeof(struct tx);
fp->fxp_tx_bufsize= tx_totbufsize;
tot_bufsize= sizeof(*tmpbufp) + tx_totbufsize + rx_totbufsize;
if (tot_bufsize % 4096)
tot_bufsize += 4096 - (tot_bufsize % 4096);
alloc_bufsize= tot_bufsize;
alloc_buf= alloc_contig(alloc_bufsize, AC_ALIGN4K, &ph);
if (alloc_buf == NULL) {
panic("fxp_init_buf: unable to alloc_contig size: %d", alloc_bufsize);
}
buf= (phys_bytes)alloc_buf;
tell_dev((vir_bytes)buf, tot_bufsize, 0, 0, 0);
tmpbufp= (union tmpbuf *)buf;
fp->fxp_rx_buf= (struct rfd *)&tmpbufp[1];
r= sys_umap(SELF, VM_D, (vir_bytes)fp->fxp_rx_buf, rx_totbufsize,
&bus_addr);
if (r != OK)
panic("sys_umap failed: %d", r);
fp->fxp_rx_busaddr= bus_addr;
#if 0
printf("fxp_init_buf: got phys 0x%x for vir 0x%x\n",
fp->fxp_rx_busaddr, fp->fxp_rx_buf);
#endif
for (i= 0, rfdp= fp->fxp_rx_buf; i<fp->fxp_rx_nbuf; i++, rfdp++)
{
rfdp->rfd_status= 0;
rfdp->rfd_command= 0;
if (i != fp->fxp_rx_nbuf-1)
{
r= sys_umap(SELF, VM_D, (vir_bytes)&rfdp[1],
sizeof(rfdp[1]), &bus_addr);
if (r != OK)
panic("sys_umap failed: %d", r);
rfdp->rfd_linkaddr= bus_addr;
}
else
{
rfdp->rfd_linkaddr= fp->fxp_rx_busaddr;
rfdp->rfd_command |= RFDC_EL;
}
rfdp->rfd_reserved= 0;
rfdp->rfd_res= 0;
rfdp->rfd_size= sizeof(rfdp->rfd_buf);
}
fp->fxp_rx_head= 0;
fp->fxp_tx_buf= (struct tx *)((char *)fp->fxp_rx_buf+rx_totbufsize);
r= sys_umap(SELF, VM_D, (vir_bytes)fp->fxp_tx_buf,
(phys_bytes)tx_totbufsize, &fp->fxp_tx_busaddr);
if (r != OK)
panic("sys_umap failed: %d", r);
for (i= 0, txp= fp->fxp_tx_buf; i<fp->fxp_tx_nbuf; i++, txp++)
{
txp->tx_status= 0;
txp->tx_command= TXC_EL | CBL_NOP; /* Just in case */
if (i != fp->fxp_tx_nbuf-1)
{
r= sys_umap(SELF, VM_D, (vir_bytes)&txp[1],
(phys_bytes)sizeof(txp[1]), &bus_addr);
if (r != OK)
panic("sys_umap failed: %d", r);
txp->tx_linkaddr= bus_addr;
}
else
{
txp->tx_linkaddr= fp->fxp_tx_busaddr;
}
txp->tx_tbda= TX_TBDA_NIL;
txp->tx_size= 0;
txp->tx_tthresh= fp->fxp_tx_threshold;
txp->tx_ntbd= 0;
}
fp->fxp_tx_idle= 1;
}
/*===========================================================================*
* fxp_reset_hw *
*===========================================================================*/
static void fxp_reset_hw(fp)
fxp_t *fp;
{
/* Inline the function in init? */
port_t port;
port= fp->fxp_base_port;
/* Reset device */
fxp_outl(port, CSR_PORT, CP_CMD_SOFT_RESET);
tickdelay(micros_to_ticks(CSR_PORT_RESET_DELAY));
/* Disable interrupts */
fxp_outb(port, SCB_INT_MASK, SIM_M);
/* Set CU base to zero */
fxp_cu_ptr_cmd(fp, SC_CU_LOAD_BASE, 0, TRUE /* check idle */);
/* Set RU base to zero */
fxp_ru_ptr_cmd(fp, SC_RU_LOAD_BASE, 0, TRUE /* check idle */);
}
/*===========================================================================*
* fxp_confaddr *
*===========================================================================*/
static void fxp_confaddr(fxp_t *fp)
{
static char eakey[]= FXP_ENVVAR "#_EA";
static char eafmt[]= "x:x:x:x:x:x";
int i, r;
phys_bytes bus_addr;
long v;
/* User defined ethernet address? */
eakey[sizeof(FXP_ENVVAR)-1]= '0' + fxp_instance;
for (i= 0; i < 6; i++)
{
if (env_parse(eakey, eafmt, i, &v, 0x00L, 0xFFL) != EP_SET)
break;
fp->fxp_address.ea_addr[i]= v;
}
if (i != 0 && i != 6) env_panic(eakey); /* It's all or nothing */
if (i == 0)
{
/* Get ethernet address from EEPROM */
for (i= 0; i<3; i++)
{
v= eeprom_read(fp, i);
fp->fxp_address.ea_addr[i*2]= (v & 0xff);
fp->fxp_address.ea_addr[i*2+1]= ((v >> 8) & 0xff);
}
}
/* Tell NIC about ethernet address */
tmpbufp->ias.ias_status= 0;
tmpbufp->ias.ias_command= CBL_C_EL | CBL_AIS;
tmpbufp->ias.ias_linkaddr= 0;
memcpy(tmpbufp->ias.ias_ethaddr, fp->fxp_address.ea_addr,
sizeof(tmpbufp->ias.ias_ethaddr));
r= sys_umap(SELF, VM_D, (vir_bytes)&tmpbufp->ias,
(phys_bytes)sizeof(tmpbufp->ias), &bus_addr);
if (r != OK)
panic("sys_umap failed: %d", r);
fxp_cu_ptr_cmd(fp, SC_CU_START, bus_addr, TRUE /* check idle */);
/* Wait for CU command to complete */
SPIN_UNTIL(tmpbufp->ias.ias_status & CBL_F_C, 1000);
if (!(tmpbufp->ias.ias_status & CBL_F_C))
panic("fxp_confaddr: CU command failed to complete");
if (!(tmpbufp->ias.ias_status & CBL_F_OK))
panic("fxp_confaddr: CU command failed");
#if VERBOSE
printf("%s: hardware ethernet address: ", fp->fxp_name);
for (i= 0; i<6; i++)
{
printf("%02x%s", fp->fxp_address.ea_addr[i],
i < 5 ? ":" : "");
}
printf("\n");
#endif
}
/*===========================================================================*
* fxp_rec_mode *
*===========================================================================*/
static void fxp_rec_mode(fp)
fxp_t *fp;
{
fp->fxp_conf_bytes[0]= CC_BYTES_NR; /* Just to be sure */
fp->fxp_conf_bytes[15] &= ~(CCB15_BD|CCB15_PM);
fp->fxp_conf_bytes[21] &= ~CCB21_MA;
if (fp->fxp_flags & FF_PROMISC)
fp->fxp_conf_bytes[15] |= CCB15_PM;
if (fp->fxp_flags & FF_MULTI)
fp->fxp_conf_bytes[21] |= CCB21_MA;
if (!(fp->fxp_flags & (FF_BROAD|FF_MULTI|FF_PROMISC)))
fp->fxp_conf_bytes[15] |= CCB15_BD;
/* Queue request if not idle */
if (fp->fxp_tx_idle)
{
fxp_do_conf(fp);
}
else
{
printf("fxp_rec_mode: setting fxp_need_conf\n");
fp->fxp_need_conf= TRUE;
}
}
/*===========================================================================*
* fxp_writev_s *
*===========================================================================*/
static void fxp_writev_s(const message *mp, int from_int)
{
endpoint_t iov_endpt;
cp_grant_id_t iov_grant;
vir_bytes iov_offset;
int i, j, n, o, r, s, count, size, prev_head;
int fxp_tx_nbuf, fxp_tx_head;
u16_t tx_command;
fxp_t *fp;
iovec_s_t *iovp;
struct tx *txp, *prev_txp;
fp= fxp_state;
count = mp->DL_COUNT;
fp->fxp_client= mp->m_source;
assert(fp->fxp_mode == FM_ENABLED);
assert(fp->fxp_flags & FF_ENABLED);
if (from_int)
{
assert(fp->fxp_flags & FF_SEND_AVAIL);
fp->fxp_flags &= ~FF_SEND_AVAIL;
fp->fxp_tx_alive= TRUE;
}
if (fp->fxp_tx_idle)
{
txp= fp->fxp_tx_buf;
fxp_tx_head= 0; /* lint */
prev_txp= NULL; /* lint */
}
else
{
fxp_tx_nbuf= fp->fxp_tx_nbuf;
prev_head= fp->fxp_tx_head;
fxp_tx_head= prev_head+1;
if (fxp_tx_head == fxp_tx_nbuf)
fxp_tx_head= 0;
assert(fxp_tx_head < fxp_tx_nbuf);
if (fxp_tx_head == fp->fxp_tx_tail)
{
/* Send queue is full */
assert(!(fp->fxp_flags & FF_SEND_AVAIL));
fp->fxp_flags |= FF_SEND_AVAIL;
goto suspend;
}
prev_txp= &fp->fxp_tx_buf[prev_head];
txp= &fp->fxp_tx_buf[fxp_tx_head];
}
assert(!(fp->fxp_flags & FF_SEND_AVAIL));
assert(!(fp->fxp_flags & FF_PACK_SENT));
iov_endpt= mp->m_source;
iov_grant= mp->DL_GRANT;
size= 0;
o= 0;
iov_offset= 0;
for (i= 0; i<count; i += IOVEC_NR,
iov_offset += IOVEC_NR * sizeof(fp->fxp_iovec_s[0]))
{
n= IOVEC_NR;
if (i+n > count)
n= count-i;
r= sys_safecopyfrom(iov_endpt, iov_grant, iov_offset,
(vir_bytes)fp->fxp_iovec_s,
n * sizeof(fp->fxp_iovec_s[0]));
if (r != OK)
panic("fxp_writev: sys_safecopyfrom failed: %d", r);
for (j= 0, iovp= fp->fxp_iovec_s; j<n; j++, iovp++)
{
s= iovp->iov_size;
if (size + s > ETH_MAX_PACK_SIZE_TAGGED) {
panic("fxp_writev: invalid packet size: %d", size + s);
}
r= sys_safecopyfrom(iov_endpt, iovp->iov_grant,
0, (vir_bytes)(txp->tx_buf+o), s);
if (r != OK) {
panic("fxp_writev_s: sys_safecopyfrom failed: %d", r);
}
size += s;
o += s;
}
}
if (size < ETH_MIN_PACK_SIZE)
panic("fxp_writev: invalid packet size: %d", size);
txp->tx_status= 0;
txp->tx_command= TXC_EL | CBL_XMIT;
txp->tx_tbda= TX_TBDA_NIL;
txp->tx_size= TXSZ_EOF | size;
txp->tx_tthresh= fp->fxp_tx_threshold;
txp->tx_ntbd= 0;
if (fp->fxp_tx_idle)
{
fp->fxp_tx_idle= 0;
fp->fxp_tx_head= fp->fxp_tx_tail= 0;
fxp_cu_ptr_cmd(fp, SC_CU_START, fp->fxp_tx_busaddr,
TRUE /* check idle */);
}
else
{
/* Link new request in transmit list */
tx_command= prev_txp->tx_command;
assert(tx_command == (TXC_EL | CBL_XMIT));
prev_txp->tx_command= CBL_XMIT;
fp->fxp_tx_head= fxp_tx_head;
}
fp->fxp_flags |= FF_PACK_SENT;
/* If the interrupt handler called, don't send a reply. The reply
* will be sent after all interrupts are handled.
*/
if (from_int)
return;
reply(fp);
return;
suspend:
if (from_int)
panic("fxp: should not be sending");
fp->fxp_tx_mess= *mp;
reply(fp);
}
/*===========================================================================*
* fxp_readv_s *
*===========================================================================*/
static void fxp_readv_s(mp, from_int)
message *mp;
int from_int;
{
int i, j, n, o, r, s, count, size, fxp_rx_head, fxp_rx_nbuf;
endpoint_t iov_endpt;
cp_grant_id_t iov_grant;
port_t port;
unsigned packlen;
vir_bytes iov_offset;
u16_t rfd_status;
u16_t rfd_res;
u8_t scb_status;
fxp_t *fp;
iovec_s_t *iovp;
struct rfd *rfdp, *prev_rfdp;
fp= fxp_state;
count = mp->DL_COUNT;
fp->fxp_client= mp->m_source;
assert(fp->fxp_mode == FM_ENABLED);
assert(fp->fxp_flags & FF_ENABLED);
port= fp->fxp_base_port;
fxp_rx_head= fp->fxp_rx_head;
rfdp= &fp->fxp_rx_buf[fxp_rx_head];
rfd_status= rfdp->rfd_status;
if (!(rfd_status & RFDS_C))
{
/* Receive buffer is empty, suspend */
goto suspend;
}
if (!(rfd_status & RFDS_OK))
{
/* Not OK? What happened? */
assert(0);
}
else
{
assert(!(rfd_status & (RFDS_CRCERR | RFDS_ALIGNERR |
RFDS_OUTOFBUF | RFDS_DMAOVR | RFDS_TOOSHORT |
RFDS_RXERR)));
}
rfd_res= rfdp->rfd_res;
assert(rfd_res & RFDR_EOF);
assert(rfd_res & RFDR_F);
packlen= rfd_res & RFDSZ_SIZE;
iov_endpt = mp->m_source;
iov_grant = mp->DL_GRANT;
size= 0;
o= 0;
iov_offset= 0;
for (i= 0; i<count; i += IOVEC_NR,
iov_offset += IOVEC_NR * sizeof(fp->fxp_iovec_s[0]))
{
n= IOVEC_NR;
if (i+n > count)
n= count-i;
r= sys_safecopyfrom(iov_endpt, iov_grant, iov_offset,
(vir_bytes)fp->fxp_iovec_s,
n * sizeof(fp->fxp_iovec_s[0]));
if (r != OK)
panic("fxp_readv_s: sys_safecopyfrom failed: %d", r);
for (j= 0, iovp= fp->fxp_iovec_s; j<n; j++, iovp++)
{
s= iovp->iov_size;
if (size + s > packlen)
{
assert(packlen > size);
s= packlen-size;
}
r= sys_safecopyto(iov_endpt, iovp->iov_grant,
0, (vir_bytes)(rfdp->rfd_buf+o), s);
if (r != OK)
{
panic("fxp_readv: sys_safecopyto failed: %d", r);
}
size += s;
if (size == packlen)
break;
o += s;
}
if (size == packlen)
break;
}
if (size < packlen)
{
assert(0);
}
fp->fxp_read_s= packlen;
fp->fxp_flags= (fp->fxp_flags & ~FF_READING) | FF_PACK_RECV;
/* Re-init the current buffer */
rfdp->rfd_status= 0;
rfdp->rfd_command= RFDC_EL;
rfdp->rfd_reserved= 0;
rfdp->rfd_res= 0;
rfdp->rfd_size= sizeof(rfdp->rfd_buf);
fxp_rx_nbuf= fp->fxp_rx_nbuf;
if (fxp_rx_head == 0)
{
prev_rfdp= &fp->fxp_rx_buf[fxp_rx_nbuf-1];
}
else
prev_rfdp= &rfdp[-1];
assert(prev_rfdp->rfd_command & RFDC_EL);
prev_rfdp->rfd_command &= ~RFDC_EL;
fxp_rx_head++;
if (fxp_rx_head == fxp_rx_nbuf)
fxp_rx_head= 0;
assert(fxp_rx_head < fxp_rx_nbuf);
fp->fxp_rx_head= fxp_rx_head;
if (!from_int)
reply(fp);
return;
suspend:
if (fp->fxp_rx_need_restart)
{
fp->fxp_rx_need_restart= 0;
/* Check the status of the RU */
scb_status= fxp_inb(port, SCB_STATUS);
if ((scb_status & SS_RUS_MASK) != SS_RU_NORES)
{
/* Race condition? */
printf("fxp_readv: restart race: 0x%x\n",
scb_status);
assert((scb_status & SS_RUS_MASK) == SS_RU_READY);
}
else
{
fxp_restart_ru(fp);
}
}
if (from_int)
{
assert(fp->fxp_flags & FF_READING);
/* No need to store any state */
return;
}
fp->fxp_rx_mess= *mp;
assert(!(fp->fxp_flags & FF_READING));
fp->fxp_flags |= FF_READING;
reply(fp);
}
/*===========================================================================*
* fxp_do_conf *
*===========================================================================*/
static void fxp_do_conf(fp)
fxp_t *fp;
{
int r;
phys_bytes bus_addr;
/* Configure device */
tmpbufp->cc.cc_status= 0;
tmpbufp->cc.cc_command= CBL_C_EL | CBL_CONF;
tmpbufp->cc.cc_linkaddr= 0;
memcpy(tmpbufp->cc.cc_bytes, fp->fxp_conf_bytes,
sizeof(tmpbufp->cc.cc_bytes));
r= sys_umap(SELF, VM_D, (vir_bytes)&tmpbufp->cc,
(phys_bytes)sizeof(tmpbufp->cc), &bus_addr);
if (r != OK)
panic("sys_umap failed: %d", r);
fxp_cu_ptr_cmd(fp, SC_CU_START, bus_addr, TRUE /* check idle */);
/* Wait for CU command to complete */
SPIN_UNTIL(tmpbufp->cc.cc_status & CBL_F_C, 100000);
if (!(tmpbufp->cc.cc_status & CBL_F_C))
panic("fxp_do_conf: CU command failed to complete");
if (!(tmpbufp->cc.cc_status & CBL_F_OK))
panic("fxp_do_conf: CU command failed");
}
/*===========================================================================*
* fxp_cu_ptr_cmd *
*===========================================================================*/
static void fxp_cu_ptr_cmd(fp, cmd, bus_addr, check_idle)
fxp_t *fp;
int cmd;
phys_bytes bus_addr;
int check_idle;
{
spin_t spin;
port_t port;
u8_t scb_cmd;
port= fp->fxp_base_port;
if (check_idle)
{
/* Consistency check. Make sure that CU is idle */
if ((fxp_inb(port, SCB_STATUS) & SS_CUS_MASK) != SS_CU_IDLE)
panic("fxp_cu_ptr_cmd: CU is not idle");
}
fxp_outl(port, SCB_POINTER, bus_addr);
fxp_outb(port, SCB_CMD, cmd);
/* What is a reasonable time-out? There is nothing in the
* documentation. 1 ms should be enough. We use 100 ms.
*/
spin_init(&spin, 100000);
do {
/* Wait for CU command to be accepted */
scb_cmd= fxp_inb(port, SCB_CMD);
if ((scb_cmd & SC_CUC_MASK) == SC_CU_NOP)
break;
} while (spin_check(&spin));
if ((scb_cmd & SC_CUC_MASK) != SC_CU_NOP)
panic("fxp_cu_ptr_cmd: CU does not accept command");
}
/*===========================================================================*
* fxp_ru_ptr_cmd *
*===========================================================================*/
static void fxp_ru_ptr_cmd(fp, cmd, bus_addr, check_idle)
fxp_t *fp;
int cmd;
phys_bytes bus_addr;
int check_idle;
{
spin_t spin;
port_t port;
u8_t scb_cmd;
port= fp->fxp_base_port;
if (check_idle)
{
/* Consistency check, make sure that RU is idle */
if ((fxp_inb(port, SCB_STATUS) & SS_RUS_MASK) != SS_RU_IDLE)
panic("fxp_ru_ptr_cmd: RU is not idle");
}
fxp_outl(port, SCB_POINTER, bus_addr);
fxp_outb(port, SCB_CMD, cmd);
spin_init(&spin, 1000);
do {
/* Wait for RU command to be accepted */
scb_cmd= fxp_inb(port, SCB_CMD);
if ((scb_cmd & SC_RUC_MASK) == SC_RU_NOP)
break;
} while (spin_check(&spin));
if ((scb_cmd & SC_RUC_MASK) != SC_RU_NOP)
panic("fxp_ru_ptr_cmd: RU does not accept command");
}
/*===========================================================================*
* fxp_restart_ru *
*===========================================================================*/
static void fxp_restart_ru(fp)
fxp_t *fp;
{
int i, fxp_rx_nbuf;
port_t port;
struct rfd *rfdp;
port= fp->fxp_base_port;
fxp_rx_nbuf= fp->fxp_rx_nbuf;
for (i= 0, rfdp= fp->fxp_rx_buf; i<fxp_rx_nbuf; i++, rfdp++)
{
rfdp->rfd_status= 0;
rfdp->rfd_command= 0;
if (i == fp->fxp_rx_nbuf-1)
rfdp->rfd_command= RFDC_EL;
rfdp->rfd_reserved= 0;
rfdp->rfd_res= 0;
rfdp->rfd_size= sizeof(rfdp->rfd_buf);
}
fp->fxp_rx_head= 0;
/* Make sure that RU is in the 'No resources' state */
if ((fxp_inb(port, SCB_STATUS) & SS_RUS_MASK) != SS_RU_NORES)
panic("fxp_restart_ru: RU is in an unexpected state");
fxp_ru_ptr_cmd(fp, SC_RU_START, fp->fxp_rx_busaddr,
FALSE /* do not check idle */);
}
/*===========================================================================*
* fxp_getstat_s *
*===========================================================================*/
static void fxp_getstat_s(message *mp)
{
int r;
fxp_t *fp;
u32_t *p;
eth_stat_t stats;
fp= fxp_state;
assert(fp->fxp_mode == FM_ENABLED);
assert(fp->fxp_flags & FF_ENABLED);
p= &fp->fxp_stat.sc_tx_fcp;
*p= 0;
/* The dump commmand doesn't take a pointer. Setting a pointer
* doesn't hurt though.
*/
fxp_cu_ptr_cmd(fp, SC_CU_DUMP_SC, 0, FALSE /* do not check idle */);
/* Wait for CU command to complete */
SPIN_UNTIL(*p != 0, 1000);
if (*p == 0)
panic("fxp_getstat: CU command failed to complete");
if (*p != SCM_DSC)
panic("fxp_getstat: bad magic");
stats.ets_recvErr=
fp->fxp_stat.sc_rx_crc +
fp->fxp_stat.sc_rx_align +
fp->fxp_stat.sc_rx_resource +
fp->fxp_stat.sc_rx_overrun +
fp->fxp_stat.sc_rx_cd +
fp->fxp_stat.sc_rx_short;
stats.ets_sendErr=
fp->fxp_stat.sc_tx_maxcol +
fp->fxp_stat.sc_tx_latecol +
fp->fxp_stat.sc_tx_crs;
stats.ets_OVW= fp->fxp_stat.sc_rx_overrun;
stats.ets_CRCerr= fp->fxp_stat.sc_rx_crc;
stats.ets_frameAll= fp->fxp_stat.sc_rx_align;
stats.ets_missedP= fp->fxp_stat.sc_rx_resource;
stats.ets_packetR= fp->fxp_stat.sc_rx_good;
stats.ets_packetT= fp->fxp_stat.sc_tx_good;
stats.ets_transDef= fp->fxp_stat.sc_tx_defered;
stats.ets_collision= fp->fxp_stat.sc_tx_totcol;
stats.ets_transAb= fp->fxp_stat.sc_tx_maxcol;
stats.ets_carrSense= fp->fxp_stat.sc_tx_crs;
stats.ets_fifoUnder= fp->fxp_stat.sc_tx_underrun;
stats.ets_fifoOver= fp->fxp_stat.sc_rx_overrun;
stats.ets_CDheartbeat= 0;
stats.ets_OWC= fp->fxp_stat.sc_tx_latecol;
r= sys_safecopyto(mp->m_source, mp->DL_GRANT, 0, (vir_bytes)&stats,
sizeof(stats));
if (r != OK)
panic("fxp_getstat_s: sys_safecopyto failed: %d", r);
mp->m_type= DL_STAT_REPLY;
r= send(mp->m_source, mp);
if (r != OK)
panic("fxp_getstat_s: send failed: %d", r);
}
/*===========================================================================*
* fxp_handler *
*===========================================================================*/
static void fxp_handler(fxp_t *fp)
{
int port;
u16_t isr;
RAND_UPDATE
port= fp->fxp_base_port;
/* Ack interrupt */
isr= fxp_inb(port, SCB_INT_STAT);
fxp_outb(port, SCB_INT_STAT, isr);
if (isr & SIS_FR)
{
isr &= ~SIS_FR;
if (!fp->fxp_got_int && (fp->fxp_flags & FF_READING))
{
fp->fxp_got_int= TRUE;
interrupt(fxp_tasknr);
}
}
if (isr & SIS_CNA)
{
isr &= ~SIS_CNA;
if (!fp->fxp_tx_idle)
{
fp->fxp_send_int= TRUE;
if (!fp->fxp_got_int)
{
fp->fxp_got_int= TRUE;
interrupt(fxp_tasknr);
}
}
}
if (isr & SIS_RNR)
{
isr &= ~SIS_RNR;
/* Assume that receive buffer is full of packets. fxp_readv
* will restart the RU.
*/
fp->fxp_rx_need_restart= 1;
}
if (isr)
{
printf("fxp_handler: unhandled interrupt: isr = 0x%02x\n",
isr);
}
}
/*===========================================================================*
* fxp_check_ints *
*===========================================================================*/
static void fxp_check_ints(fxp_t *fp)
{
int n, fxp_flags, prev_tail;
int fxp_tx_tail, fxp_tx_nbuf, fxp_tx_threshold;
port_t port;
u32_t busaddr;
u16_t tx_status;
u8_t scb_status;
struct tx *txp;
fxp_flags= fp->fxp_flags;
if (fxp_flags & FF_READING)
{
if (!(fp->fxp_rx_buf[fp->fxp_rx_head].rfd_status & RFDS_C))
; /* Nothing */
else
{
fxp_readv_s(&fp->fxp_rx_mess, TRUE /* from int */);
}
}
if (fp->fxp_tx_idle)
; /* Nothing to do */
else if (fp->fxp_send_int)
{
fp->fxp_send_int= FALSE;
fxp_tx_tail= fp->fxp_tx_tail;
fxp_tx_nbuf= fp->fxp_tx_nbuf;
n= 0;
for (;;)
{
txp= &fp->fxp_tx_buf[fxp_tx_tail];
tx_status= txp->tx_status;
if (!(tx_status & TXS_C))
break;
n++;
assert(tx_status & TXS_OK);
if (tx_status & TXS_U)
{
fxp_tx_threshold= fp->fxp_tx_threshold;
if (fxp_tx_threshold < TXTT_MAX)
{
fxp_tx_threshold++;
fp->fxp_tx_threshold= fxp_tx_threshold;
}
printf(
"fxp_check_ints: fxp_tx_threshold = 0x%x\n",
fxp_tx_threshold);
}
if (txp->tx_command & TXC_EL)
{
fp->fxp_tx_idle= 1;
break;
}
fxp_tx_tail++;
if (fxp_tx_tail == fxp_tx_nbuf)
fxp_tx_tail= 0;
assert(fxp_tx_tail < fxp_tx_nbuf);
}
if (fp->fxp_need_conf)
{
/* Check the status of the CU */
port= fp->fxp_base_port;
scb_status= fxp_inb(port, SCB_STATUS);
if ((scb_status & SS_CUS_MASK) != SS_CU_IDLE)
{
/* Nothing to do */
printf("scb_status = 0x%x\n", scb_status);
}
else
{
printf("fxp_check_ints: fxp_need_conf\n");
fp->fxp_need_conf= FALSE;
fxp_do_conf(fp);
}
}
if (n)
{
if (!fp->fxp_tx_idle)
{
fp->fxp_tx_tail= fxp_tx_tail;
/* Check the status of the CU */
port= fp->fxp_base_port;
scb_status= fxp_inb(port, SCB_STATUS);
if ((scb_status & SS_CUS_MASK) != SS_CU_IDLE)
{
/* Nothing to do */
printf("scb_status = 0x%x\n",
scb_status);
}
else
{
if (fxp_tx_tail == 0)
prev_tail= fxp_tx_nbuf-1;
else
prev_tail= fxp_tx_tail-1;
busaddr= fp->fxp_tx_buf[prev_tail].
tx_linkaddr;
fxp_cu_ptr_cmd(fp, SC_CU_START,
busaddr, 1 /* check idle */);
}
}
if (fp->fxp_flags & FF_SEND_AVAIL)
{
fxp_writev_s(&fp->fxp_tx_mess,
TRUE /* from int */);
}
}
}
if (fp->fxp_report_link)
fxp_report_link(fp);
if (fp->fxp_flags & (FF_PACK_SENT | FF_PACK_RECV))
reply(fp);
}
/*===========================================================================*
* fxp_watchdog_f *
*===========================================================================*/
static void fxp_watchdog_f(tp)
timer_t *tp;
{
fxp_t *fp;
set_timer(&fxp_watchdog, system_hz, fxp_watchdog_f, 0);
fp= fxp_state;
if (fp->fxp_mode != FM_ENABLED)
return;
/* Handle race condition, MII interface might be busy */
if(!fp->fxp_mii_busy)
{
/* Check the link status. */
if (fxp_link_changed(fp))
{
#if VERBOSE
printf("fxp_watchdog_f: link changed\n");
#endif
fp->fxp_report_link= TRUE;
fp->fxp_got_int= TRUE;
interrupt(fxp_tasknr);
}
}
if (!(fp->fxp_flags & FF_SEND_AVAIL))
{
/* Assume that an idle system is alive */
fp->fxp_tx_alive= TRUE;
return;
}
if (fp->fxp_tx_alive)
{
fp->fxp_tx_alive= FALSE;
return;
}
fp->fxp_need_reset= TRUE;
fp->fxp_got_int= TRUE;
interrupt(fxp_tasknr);
}
/*===========================================================================*
* fxp_link_changed *
*===========================================================================*/
static int fxp_link_changed(fp)
fxp_t *fp;
{
u16_t scr;
scr= mii_read(fp, MII_SCR);
scr &= ~(MII_SCR_RES|MII_SCR_RES_1);
return (fp->fxp_mii_scr != scr);
}
/*===========================================================================*
* fxp_report_link *
*===========================================================================*/
static void fxp_report_link(fxp_t *fp)
{
u16_t mii_ctrl, mii_status, mii_id1, mii_id2,
mii_ana, mii_anlpa, mii_ane, mii_extstat,
mii_ms_ctrl, mii_ms_status, scr;
u32_t oui;
int model, rev;
int f, link_up;
fp->fxp_report_link= FALSE;
scr= mii_read(fp, MII_SCR);
scr &= ~(MII_SCR_RES|MII_SCR_RES_1);
fp->fxp_mii_scr= scr;
mii_ctrl= mii_read(fp, MII_CTRL);
mii_read(fp, MII_STATUS); /* The status reg is latched, read twice */
mii_status= mii_read(fp, MII_STATUS);
mii_id1= mii_read(fp, MII_PHYID_H);
mii_id2= mii_read(fp, MII_PHYID_L);
mii_ana= mii_read(fp, MII_ANA);
mii_anlpa= mii_read(fp, MII_ANLPA);
mii_ane= mii_read(fp, MII_ANE);
if (mii_status & MII_STATUS_EXT_STAT)
mii_extstat= mii_read(fp, MII_EXT_STATUS);
else
mii_extstat= 0;
if (fp->fxp_ms_regs)
{
mii_ms_ctrl= mii_read(fp, MII_MS_CTRL);
mii_ms_status= mii_read(fp, MII_MS_STATUS);
}
else
{
mii_ms_ctrl= 0;
mii_ms_status= 0;
}
/* How do we know about the link status? */
link_up= !!(mii_status & MII_STATUS_LS);
fp->fxp_link_up= link_up;
if (!link_up)
{
#if VERBOSE
printf("%s: link down\n", fp->fxp_name);
#endif
return;
}
oui= (mii_id1 << MII_PH_OUI_H_C_SHIFT) |
((mii_id2 & MII_PL_OUI_L_MASK) >> MII_PL_OUI_L_SHIFT);
model= ((mii_id2 & MII_PL_MODEL_MASK) >> MII_PL_MODEL_SHIFT);
rev= (mii_id2 & MII_PL_REV_MASK);
#if VERBOSE
printf("OUI 0x%06lx, Model 0x%02x, Revision 0x%x\n", oui, model, rev);
#endif
if (mii_ctrl & (MII_CTRL_LB|MII_CTRL_PD|MII_CTRL_ISO))
{
printf("%s: PHY: ", fp->fxp_name);
f= 1;
if (mii_ctrl & MII_CTRL_LB)
{
printf("loopback mode");
f= 0;
}
if (mii_ctrl & MII_CTRL_PD)
{
if (!f) printf(", ");
f= 0;
printf("powered down");
}
if (mii_ctrl & MII_CTRL_ISO)
{
if (!f) printf(", ");
f= 0;
printf("isolated");
}
printf("\n");
return;
}
if (!(mii_ctrl & MII_CTRL_ANE))
{
printf("%s: manual config: ", fp->fxp_name);
switch(mii_ctrl & (MII_CTRL_SP_LSB|MII_CTRL_SP_MSB))
{
case MII_CTRL_SP_10: printf("10 Mbps"); break;
case MII_CTRL_SP_100: printf("100 Mbps"); break;
case MII_CTRL_SP_1000: printf("1000 Mbps"); break;
case MII_CTRL_SP_RES: printf("reserved speed"); break;
}
if (mii_ctrl & MII_CTRL_DM)
printf(", full duplex");
else
printf(", half duplex");
printf("\n");
return;
}
if (!debug) goto resspeed;
printf("%s: ", fp->fxp_name);
mii_print_stat_speed(mii_status, mii_extstat);
printf("\n");
if (!(mii_status & MII_STATUS_ANC))
printf("%s: auto-negotiation not complete\n", fp->fxp_name);
if (mii_status & MII_STATUS_RF)
printf("%s: remote fault detected\n", fp->fxp_name);
if (!(mii_status & MII_STATUS_ANA))
{
printf("%s: local PHY has no auto-negotiation ability\n",
fp->fxp_name);
}
if (!(mii_status & MII_STATUS_LS))
printf("%s: link down\n", fp->fxp_name);
if (mii_status & MII_STATUS_JD)
printf("%s: jabber condition detected\n", fp->fxp_name);
if (!(mii_status & MII_STATUS_EC))
{
printf("%s: no extended register set\n", fp->fxp_name);
goto resspeed;
}
if (!(mii_status & MII_STATUS_ANC))
goto resspeed;
printf("%s: local cap.: ", fp->fxp_name);
if (mii_ms_ctrl & (MII_MSC_1000T_FD | MII_MSC_1000T_HD))
{
printf("1000 Mbps: T-");
switch(mii_ms_ctrl & (MII_MSC_1000T_FD | MII_MSC_1000T_HD))
{
case MII_MSC_1000T_FD: printf("FD"); break;
case MII_MSC_1000T_HD: printf("HD"); break;
default: printf("FD/HD"); break;
}
if (mii_ana)
printf(", ");
}
mii_print_techab(mii_ana);
printf("\n");
if (mii_ane & MII_ANE_PDF)
printf("%s: parallel detection fault\n", fp->fxp_name);
if (!(mii_ane & MII_ANE_LPANA))
{
printf("%s: link-partner does not support auto-negotiation\n",
fp->fxp_name);
goto resspeed;
}
printf("%s: remote cap.: ", fp->fxp_name);
if (mii_ms_ctrl & (MII_MSC_1000T_FD | MII_MSC_1000T_HD))
if (mii_ms_status & (MII_MSS_LP1000T_FD | MII_MSS_LP1000T_HD))
{
printf("1000 Mbps: T-");
switch(mii_ms_status &
(MII_MSS_LP1000T_FD | MII_MSS_LP1000T_HD))
{
case MII_MSS_LP1000T_FD: printf("FD"); break;
case MII_MSS_LP1000T_HD: printf("HD"); break;
default: printf("FD/HD"); break;
}
if (mii_anlpa)
printf(", ");
}
mii_print_techab(mii_anlpa);
printf("\n");
if (fp->fxp_ms_regs)
{
printf("%s: ", fp->fxp_name);
if (mii_ms_ctrl & MII_MSC_MS_MANUAL)
{
printf("manual %s",
(mii_ms_ctrl & MII_MSC_MS_VAL) ?
"MASTER" : "SLAVE");
}
else
{
printf("%s device",
(mii_ms_ctrl & MII_MSC_MULTIPORT) ?
"multiport" : "single-port");
}
if (mii_ms_ctrl & MII_MSC_RES)
printf(" reserved<0x%x>", mii_ms_ctrl & MII_MSC_RES);
printf(": ");
if (mii_ms_status & MII_MSS_FAULT)
printf("M/S config fault");
else if (mii_ms_status & MII_MSS_MASTER)
printf("MASTER");
else
printf("SLAVE");
printf("\n");
}
if (mii_ms_status & (MII_MSS_LP1000T_FD|MII_MSS_LP1000T_HD))
{
if (!(mii_ms_status & MII_MSS_LOCREC))
{
printf("%s: local receiver not OK\n",
fp->fxp_name);
}
if (!(mii_ms_status & MII_MSS_REMREC))
{
printf("%s: remote receiver not OK\n",
fp->fxp_name);
}
}
if (mii_ms_status & (MII_MSS_RES|MII_MSS_IDLE_ERR))
{
printf("%s", fp->fxp_name);
if (mii_ms_status & MII_MSS_RES)
printf(" reserved<0x%x>", mii_ms_status & MII_MSS_RES);
if (mii_ms_status & MII_MSS_IDLE_ERR)
{
printf(" idle error %d",
mii_ms_status & MII_MSS_IDLE_ERR);
}
printf("\n");
}
resspeed:
#if VERBOSE
printf("%s: link up, %d Mbps, %s duplex\n",
fp->fxp_name, (scr & MII_SCR_100) ? 100 : 10,
(scr & MII_SCR_FD) ? "full" : "half");
#endif
;
}
/*===========================================================================*
* reply *
*===========================================================================*/
static void reply(fp)
fxp_t *fp;
{
message reply;
int flags;
int r;
flags = DL_NOFLAGS;
if (fp->fxp_flags & FF_PACK_SENT)
flags |= DL_PACK_SEND;
if (fp->fxp_flags & FF_PACK_RECV)
flags |= DL_PACK_RECV;
reply.m_type = DL_TASK_REPLY;
reply.DL_FLAGS = flags;
reply.DL_COUNT = fp->fxp_read_s;
r= send(fp->fxp_client, &reply);
if (r < 0)
panic("fxp: send failed: %d", r);
fp->fxp_read_s = 0;
fp->fxp_flags &= ~(FF_PACK_SENT | FF_PACK_RECV);
}
/*===========================================================================*
* mess_reply *
*===========================================================================*/
static void mess_reply(req, reply_mess)
message *req;
message *reply_mess;
{
if (send(req->m_source, reply_mess) != OK)
panic("fxp: unable to mess_reply");
}
/*===========================================================================*
* eeprom_read *
*===========================================================================*/
static u16_t eeprom_read(fp, reg)
fxp_t *fp;
int reg;
{
port_t port;
u16_t v;
int b, i, alen;
alen= fp->fxp_ee_addrlen;
if (!alen)
{
eeprom_addrsize(fp);
alen= fp->fxp_ee_addrlen;
assert(alen == 6 || alen == 8);
}
port= fp->fxp_base_port;
fxp_outb(port, CSR_EEPROM, CE_EECS); /* Enable EEPROM */
v= EEPROM_READ_PREFIX;
for (i= EEPROM_PREFIX_LEN-1; i >= 0; i--)
{
b= ((v & (1 << i)) ? CE_EEDI : 0);
fxp_outb(port, CSR_EEPROM, CE_EECS | b); /* bit */
fxp_outb(port, CSR_EEPROM, CE_EECS | b | CE_EESK); /* Clock */
micro_delay(EESK_PERIOD/2+1);
fxp_outb(port, CSR_EEPROM, CE_EECS | b);
micro_delay(EESK_PERIOD/2+1);
}
v= reg;
for (i= alen-1; i >= 0; i--)
{
b= ((v & (1 << i)) ? CE_EEDI : 0);
fxp_outb(port, CSR_EEPROM, CE_EECS | b); /* bit */
fxp_outb(port, CSR_EEPROM, CE_EECS | b | CE_EESK); /* Clock */
micro_delay(EESK_PERIOD/2+1);
fxp_outb(port, CSR_EEPROM, CE_EECS | b);
micro_delay(EESK_PERIOD/2+1);
}
v= 0;
for (i= 0; i<16; i++)
{
fxp_outb(port, CSR_EEPROM, CE_EECS | CE_EESK); /* Clock */
micro_delay(EESK_PERIOD/2+1);
b= !!(fxp_inb(port, CSR_EEPROM) & CE_EEDO);
v= (v << 1) | b;
fxp_outb(port, CSR_EEPROM, CE_EECS );
micro_delay(EESK_PERIOD/2+1);
}
fxp_outb(port, CSR_EEPROM, 0); /* Disable EEPROM */
micro_delay(EECS_DELAY);
return v;
}
/*===========================================================================*
* eeprom_addrsize *
*===========================================================================*/
static void eeprom_addrsize(fp)
fxp_t *fp;
{
port_t port;
u16_t v;
int b, i;
port= fp->fxp_base_port;
/* Try to find out the size of the EEPROM */
fxp_outb(port, CSR_EEPROM, CE_EECS); /* Enable EEPROM */
v= EEPROM_READ_PREFIX;
for (i= EEPROM_PREFIX_LEN-1; i >= 0; i--)
{
b= ((v & (1 << i)) ? CE_EEDI : 0);
fxp_outb(port, CSR_EEPROM, CE_EECS | b); /* bit */
fxp_outb(port, CSR_EEPROM, CE_EECS | b | CE_EESK); /* Clock */
micro_delay(EESK_PERIOD/2+1);
fxp_outb(port, CSR_EEPROM, CE_EECS | b);
micro_delay(EESK_PERIOD/2+1);
}
for (i= 0; i<32; i++)
{
b= 0;
fxp_outb(port, CSR_EEPROM, CE_EECS | b); /* bit */
fxp_outb(port, CSR_EEPROM, CE_EECS | b | CE_EESK); /* Clock */
micro_delay(EESK_PERIOD/2+1);
fxp_outb(port, CSR_EEPROM, CE_EECS | b);
micro_delay(EESK_PERIOD/2+1);
v= fxp_inb(port, CSR_EEPROM);
if (!(v & CE_EEDO))
break;
}
if (i >= 32)
panic("eeprom_addrsize: failed");
fp->fxp_ee_addrlen= i+1;
/* Discard 16 data bits */
for (i= 0; i<16; i++)
{
fxp_outb(port, CSR_EEPROM, CE_EECS | CE_EESK); /* Clock */
micro_delay(EESK_PERIOD/2+1);
fxp_outb(port, CSR_EEPROM, CE_EECS );
micro_delay(EESK_PERIOD/2+1);
}
fxp_outb(port, CSR_EEPROM, 0); /* Disable EEPROM */
micro_delay(EECS_DELAY);
#if VERBOSE
printf("%s EEPROM address length: %d\n",
fp->fxp_name, fp->fxp_ee_addrlen);
#endif
}
/*===========================================================================*
* mii_read *
*===========================================================================*/
static u16_t mii_read(fp, reg)
fxp_t *fp;
int reg;
{
spin_t spin;
port_t port;
u32_t v;
port= fp->fxp_base_port;
assert(!fp->fxp_mii_busy);
fp->fxp_mii_busy++;
if (!(fxp_inl(port, CSR_MDI_CTL) & CM_READY))
panic("mii_read: MDI not ready");
fxp_outl(port, CSR_MDI_CTL, CM_READ | (1 << CM_PHYADDR_SHIFT) |
(reg << CM_REG_SHIFT));
spin_init(&spin, 100000);
do {
v= fxp_inl(port, CSR_MDI_CTL);
if (v & CM_READY)
break;
} while (spin_check(&spin));
if (!(v & CM_READY))
panic("mii_read: MDI not ready after command");
fp->fxp_mii_busy--;
assert(!fp->fxp_mii_busy);
return v & CM_DATA_MASK;
}
static u8_t do_inb(port_t port)
{
int r;
u32_t value;
r= sys_inb(port, &value);
if (r != OK)
panic("sys_inb failed: %d", r);
return value;
}
static u32_t do_inl(port_t port)
{
int r;
u32_t value;
r= sys_inl(port, &value);
if (r != OK)
panic("sys_inl failed: %d", r);
return value;
}
static void do_outb(port_t port, u8_t value)
{
int r;
r= sys_outb(port, value);
if (r != OK)
panic("sys_outb failed: %d", r);
}
static void do_outl(port_t port, u32_t value)
{
int r;
r= sys_outl(port, value);
if (r != OK)
panic("sys_outl failed: %d", r);
}
static void tell_dev(buf, size, pci_bus, pci_dev, pci_func)
vir_bytes buf;
size_t size;
int pci_bus;
int pci_dev;
int pci_func;
{
int r;
endpoint_t dev_e;
message m;
r= ds_retrieve_label_endpt("amddev", &dev_e);
if (r != OK)
{
#if 0
printf(
"fxp`tell_dev: ds_retrieve_label_endpt failed for 'amddev': %d\n",
r);
#endif
return;
}
m.m_type= IOMMU_MAP;
m.m2_i1= pci_bus;
m.m2_i2= pci_dev;
m.m2_i3= pci_func;
m.m2_l1= buf;
m.m2_l2= size;
r= sendrec(dev_e, &m);
if (r != OK)
{
printf("fxp`tell_dev: sendrec to %d failed: %d\n",
dev_e, r);
return;
}
if (m.m_type != OK)
{
printf("fxp`tell_dev: dma map request failed: %d\n",
m.m_type);
return;
}
}
/*
* $PchId: fxp.c,v 1.4 2005/01/31 22:10:37 philip Exp $
*/
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