- 根目录:
- drivers
- staging
- cxt1e1
- hwprobe.c
/* Copyright (C) 2007 One Stop Systems
* Copyright (C) 2003-2005 SBE, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/netdevice.h>
#include <linux/hdlc.h>
#include <linux/if_arp.h>
#include <asm/uaccess.h>
#include <linux/rtnetlink.h>
#include <linux/pci.h>
#include "pmcc4_sysdep.h"
#include "sbecom_inline_linux.h"
#include "libsbew.h"
#include "pmcc4_private.h"
#include "pmcc4.h"
#include "pmcc4_ioctls.h"
#include "pmc93x6_eeprom.h"
#ifdef CONFIG_PROC_FS
#include "sbeproc.h"
#endif
#ifdef SBE_INCLUDE_SYMBOLS
#define STATIC
#else
#define STATIC static
#endif
extern int cxt1e1_log_level;
extern int error_flag;
extern int drvr_state;
/* forward references */
void c4_stopwd (ci_t *);
struct net_device * __init c4_add_dev (hdw_info_t *, int, unsigned long, unsigned long, int, int);
struct s_hdw_info hdw_info[MAX_BOARDS];
void __init
show_two (hdw_info_t * hi, int brdno)
{
ci_t *ci;
struct pci_dev *pdev;
char *bid;
char *bp, banner[80];
char sn[6];
bp = banner;
memset (banner, 0, 80); /* clear print buffer */
ci = (ci_t *)(netdev_priv(hi->ndev));
bid = sbeid_get_bdname (ci);
switch (hi->promfmt)
{
case PROM_FORMAT_TYPE1:
memcpy (sn, (FLD_TYPE1 *) (hi->mfg_info.pft1.Serial), 6);
break;
case PROM_FORMAT_TYPE2:
memcpy (sn, (FLD_TYPE2 *) (hi->mfg_info.pft2.Serial), 6);
break;
default:
memset (sn, 0, 6);
break;
}
sprintf (banner, "%s: %s S/N %06X, MUSYCC Rev %02X",
hi->devname, bid,
((sn[3] << 16) & 0xff0000) |
((sn[4] << 8) & 0x00ff00) |
(sn[5] & 0x0000ff),
(u_int8_t) hi->revid[0]);
pr_info("%s\n", banner);
pdev = hi->pdev[0];
pr_info("%s: %s at v/p=%lx/%lx (%02x:%02x.%x) irq %d\n",
hi->devname, "MUSYCC",
(unsigned long) hi->addr_mapped[0], hi->addr[0],
hi->pci_busno, (u_int8_t) PCI_SLOT (pdev->devfn),
(u_int8_t) PCI_FUNC (pdev->devfn), pdev->irq);
pdev = hi->pdev[1];
pr_info("%s: %s at v/p=%lx/%lx (%02x:%02x.%x) irq %d\n",
hi->devname, "EBUS ",
(unsigned long) hi->addr_mapped[1], hi->addr[1],
hi->pci_busno, (u_int8_t) PCI_SLOT (pdev->devfn),
(u_int8_t) PCI_FUNC (pdev->devfn), pdev->irq);
}
void __init
hdw_sn_get (hdw_info_t * hi, int brdno)
{
/* obtain hardware EEPROM information */
long addr;
addr = (long) hi->addr_mapped[1] + EEPROM_OFFSET;
/* read EEPROM with largest known format size... */
pmc_eeprom_read_buffer (addr, 0, (char *) hi->mfg_info.data, sizeof (FLD_TYPE2));
#if 0
{
unsigned char *ucp = (unsigned char *) &hi->mfg_info.data;
pr_info("eeprom[00]: %02x %02x %02x %02x %02x %02x %02x %02x\n",
*(ucp + 0), *(ucp + 1), *(ucp + 2), *(ucp + 3), *(ucp + 4), *(ucp + 5), *(ucp + 6), *(ucp + 7));
pr_info("eeprom[08]: %02x %02x %02x %02x %02x %02x %02x %02x\n",
*(ucp + 8), *(ucp + 9), *(ucp + 10), *(ucp + 11), *(ucp + 12), *(ucp + 13), *(ucp + 14), *(ucp + 15));
pr_info("eeprom[16]: %02x %02x %02x %02x %02x %02x %02x %02x\n",
*(ucp + 16), *(ucp + 17), *(ucp + 18), *(ucp + 19), *(ucp + 20), *(ucp + 21), *(ucp + 22), *(ucp + 23));
pr_info("eeprom[24]: %02x %02x %02x %02x %02x %02x %02x %02x\n",
*(ucp + 24), *(ucp + 25), *(ucp + 26), *(ucp + 27), *(ucp + 28), *(ucp + 29), *(ucp + 30), *(ucp + 31));
pr_info("eeprom[32]: %02x %02x %02x %02x %02x %02x %02x %02x\n",
*(ucp + 32), *(ucp + 33), *(ucp + 34), *(ucp + 35), *(ucp + 36), *(ucp + 37), *(ucp + 38), *(ucp + 39));
pr_info("eeprom[40]: %02x %02x %02x %02x %02x %02x %02x %02x\n",
*(ucp + 40), *(ucp + 41), *(ucp + 42), *(ucp + 43), *(ucp + 44), *(ucp + 45), *(ucp + 46), *(ucp + 47));
}
#endif
#if 0
pr_info("sn: %x %x %x %x %x %x\n",
hi->mfg_info.Serial[0],
hi->mfg_info.Serial[1],
hi->mfg_info.Serial[2],
hi->mfg_info.Serial[3],
hi->mfg_info.Serial[4],
hi->mfg_info.Serial[5]);
#endif
if ((hi->promfmt = pmc_verify_cksum (&hi->mfg_info.data)) == PROM_FORMAT_Unk)
{
/* bad crc, data is suspect */
if (cxt1e1_log_level >= LOG_WARN)
pr_info("%s: EEPROM cksum error\n", hi->devname);
hi->mfg_info_sts = EEPROM_CRCERR;
} else
hi->mfg_info_sts = EEPROM_OK;
}
void __init
prep_hdw_info (void)
{
hdw_info_t *hi;
int i;
for (i = 0, hi = hdw_info; i < MAX_BOARDS; i++, hi++)
{
hi->pci_busno = 0xff;
hi->pci_slot = 0xff;
hi->pci_pin[0] = 0;
hi->pci_pin[1] = 0;
hi->ndev = 0;
hi->addr[0] = 0L;
hi->addr[1] = 0L;
hi->addr_mapped[0] = 0L;
hi->addr_mapped[1] = 0L;
}
}
void
cleanup_ioremap (void)
{
hdw_info_t *hi;
int i;
for (i = 0, hi = hdw_info; i < MAX_BOARDS; i++, hi++)
{
if (hi->pci_slot == 0xff)
break;
if (hi->addr_mapped[0])
{
iounmap ((void *) (hi->addr_mapped[0]));
release_mem_region ((long) hi->addr[0], hi->len[0]);
hi->addr_mapped[0] = 0;
}
if (hi->addr_mapped[1])
{
iounmap ((void *) (hi->addr_mapped[1]));
release_mem_region ((long) hi->addr[1], hi->len[1]);
hi->addr_mapped[1] = 0;
}
}
}
void
cleanup_devs (void)
{
hdw_info_t *hi;
int i;
for (i = 0, hi = hdw_info; i < MAX_BOARDS; i++, hi++)
{
if (hi->pci_slot == 0xff || !hi->ndev)
break;
c4_stopwd(netdev_priv(hi->ndev));
#ifdef CONFIG_PROC_FS
sbecom_proc_brd_cleanup(netdev_priv(hi->ndev));
#endif
unregister_netdev (hi->ndev);
free_irq (hi->pdev[0]->irq, hi->ndev);
#ifdef CONFIG_SBE_PMCC4_NCOMM
free_irq (hi->pdev[1]->irq, hi->ndev);
#endif
OS_kfree (hi->ndev);
}
}
STATIC int __init
c4_hdw_init (struct pci_dev * pdev, int found)
{
hdw_info_t *hi;
int i;
int fun, slot;
unsigned char busno = 0xff;
/* our MUSYCC chip supports two functions, 0 & 1 */
if ((fun = PCI_FUNC (pdev->devfn)) > 1)
{
pr_warning("unexpected devfun: 0x%x\n", pdev->devfn);
return 0;
}
if (pdev->bus) /* obtain bus number */
busno = pdev->bus->number;
else
busno = 0; /* default for system PCI inconsistency */
slot = pdev->devfn & ~0x07;
/*
* Functions 0 & 1 for a given board (identified by same bus(busno) and
* slot(slot)) are placed into the same 'hardware' structure. The first
* part of the board's functionality will be placed into an unpopulated
* element, identified by "slot==(0xff)". The second part of a board's
* functionality will match the previously loaded slot/busno.
*/
for (i = 0, hi = hdw_info; i < MAX_BOARDS; i++, hi++)
{
/*
* match with board's first found interface, otherwise this is first
* found
*/
if ((hi->pci_slot == 0xff) || /* new board */
((hi->pci_slot == slot) && (hi->bus == pdev->bus)))
break; /* found for-loop exit */
}
if (i == MAX_BOARDS) /* no match in above loop means MAX
* exceeded */
{
pr_warning("exceeded number of allowed devices (>%d)?\n", MAX_BOARDS);
return 0;
}
if (pdev->bus)
hi->pci_busno = pdev->bus->number;
else
hi->pci_busno = 0; /* default for system PCI inconsistency */
hi->pci_slot = slot;
pci_read_config_byte (pdev, PCI_INTERRUPT_PIN, &hi->pci_pin[fun]);
pci_read_config_byte (pdev, PCI_REVISION_ID, &hi->revid[fun]);
hi->bus = pdev->bus;
hi->addr[fun] = pci_resource_start (pdev, 0);
hi->len[fun] = pci_resource_end (pdev, 0) - hi->addr[fun] + 1;
hi->pdev[fun] = pdev;
{
/*
* create device name from module name, plus add the appropriate
* board number
*/
char *cp = hi->devname;
strcpy (cp, KBUILD_MODNAME);
cp += strlen (cp); /* reposition */
*cp++ = '-';
*cp++ = '0' + (found / 2); /* there are two found interfaces per
* board */
*cp = 0; /* termination */
}
return 1;
}
status_t __init
c4hw_attach_all (void)
{
hdw_info_t *hi;
struct pci_dev *pdev = NULL;
int found = 0, i, j;
error_flag = 0;
prep_hdw_info ();
/*** scan PCI bus for all possible boards */
while ((pdev = pci_get_device (PCI_VENDOR_ID_CONEXANT,
PCI_DEVICE_ID_CN8474,
pdev)))
{
if (c4_hdw_init (pdev, found))
found++;
}
if (!found)
{
pr_warning("No boards found\n");
return ENODEV;
}
/* sanity check for consistent hardware found */
for (i = 0, hi = hdw_info; i < MAX_BOARDS; i++, hi++)
{
if (hi->pci_slot != 0xff && (!hi->addr[0] || !hi->addr[1]))
{
pr_warning("%s: something very wrong with pci_get_device\n",
hi->devname);
return EIO;
}
}
/* bring board's memory regions on/line */
for (i = 0, hi = hdw_info; i < MAX_BOARDS; i++, hi++)
{
if (hi->pci_slot == 0xff)
break;
for (j = 0; j < 2; j++)
{
if (request_mem_region (hi->addr[j], hi->len[j], hi->devname) == 0)
{
pr_warning("%s: memory in use, addr=0x%lx, len=0x%lx ?\n",
hi->devname, hi->addr[j], hi->len[j]);
cleanup_ioremap ();
return ENOMEM;
}
hi->addr_mapped[j] = (unsigned long) ioremap (hi->addr[j], hi->len[j]);
if (!hi->addr_mapped[j])
{
pr_warning("%s: ioremap fails, addr=0x%lx, len=0x%lx ?\n",
hi->devname, hi->addr[j], hi->len[j]);
cleanup_ioremap ();
return ENOMEM;
}
#ifdef SBE_MAP_DEBUG
pr_warning("%s: io remapped from phys %x to virt %x\n",
hi->devname, (u_int32_t) hi->addr[j], (u_int32_t) hi->addr_mapped[j]);
#endif
}
}
drvr_state = SBE_DRVR_AVAILABLE;
/* Have now memory mapped all boards. Now allow board's access to system */
for (i = 0, hi = hdw_info; i < MAX_BOARDS; i++, hi++)
{
if (hi->pci_slot == 0xff)
break;
if (pci_enable_device (hi->pdev[0]) ||
pci_enable_device (hi->pdev[1]))
{
drvr_state = SBE_DRVR_DOWN;
pr_warning("%s: failed to enable card %d slot %d\n",
hi->devname, i, hi->pci_slot);
cleanup_devs ();
cleanup_ioremap ();
return EIO;
}
pci_set_master (hi->pdev[0]);
pci_set_master (hi->pdev[1]);
if (!(hi->ndev = c4_add_dev (hi, i, (long) hi->addr_mapped[0],
(long) hi->addr_mapped[1],
hi->pdev[0]->irq,
hi->pdev[1]->irq)))
{
drvr_state = SBE_DRVR_DOWN;
cleanup_ioremap ();
/* NOTE: c4_add_dev() does its own device cleanup */
#if 0
cleanup_devs ();
#endif
return error_flag; /* error_flag set w/in add_dev() */
}
show_two (hi, i); /* displays found information */
}
return 0;
}
/*** End-of-File ***/