![Thomas Vegas](/assets/img/avatar_default.png)
Fixed the following sparse warnings: drivers/staging/cxt1e1/hwprobe.c:162:38: warning: Using plain integer as NULL pointer drivers/staging/cxt1e1/hwprobe.c:163:38: warning: Using plain integer as NULL pointer drivers/staging/cxt1e1/hwprobe.c:179:46: warning: Using plain integer as NULL pointer drivers/staging/cxt1e1/hwprobe.c:184:46: warning: Using plain integer as NULL pointer Signed-off-by: Thomas Vegas <thomas_75@safe-mail.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
383 lines
10 KiB
C
383 lines
10 KiB
C
/* Copyright (C) 2007 One Stop Systems
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* Copyright (C) 2003-2005 SBE, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/netdevice.h>
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#include <linux/hdlc.h>
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#include <linux/if_arp.h>
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#include <asm/uaccess.h>
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#include <linux/rtnetlink.h>
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#include <linux/pci.h>
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#include "pmcc4_sysdep.h"
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#include "sbecom_inline_linux.h"
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#include "libsbew.h"
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#include "pmcc4_private.h"
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#include "pmcc4.h"
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#include "pmcc4_ioctls.h"
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#include "pmc93x6_eeprom.h"
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#ifdef CONFIG_PROC_FS
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#include "sbeproc.h"
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#endif
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extern int error_flag;
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extern int drvr_state;
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/* forward references */
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void c4_stopwd(ci_t *);
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struct net_device * __init c4_add_dev(hdw_info_t *, int, unsigned long,
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unsigned long, int, int);
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struct s_hdw_info hdw_info[MAX_BOARDS];
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void __init
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show_two(hdw_info_t *hi, int brdno)
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{
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ci_t *ci;
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struct pci_dev *pdev;
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char *bid;
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char banner[80];
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char sn[6] = {0,};
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ci = (ci_t *)(netdev_priv(hi->ndev));
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bid = sbeid_get_bdname(ci);
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switch (hi->promfmt) {
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case PROM_FORMAT_TYPE1:
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memcpy(sn, hi->mfg_info.pft1.Serial, 6);
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break;
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case PROM_FORMAT_TYPE2:
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memcpy(sn, hi->mfg_info.pft2.Serial, 6);
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break;
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}
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sprintf(banner, "%s: %s S/N %06X, MUSYCC Rev %02X",
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hi->devname, bid,
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((sn[3] << 16) & 0xff0000) |
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((sn[4] << 8) & 0x00ff00) |
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(sn[5] & 0x0000ff),
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(u_int8_t) hi->revid[0]);
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pr_info("%s\n", banner);
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pdev = hi->pdev[0];
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pr_info("%s: %s at v/p=%lx/%lx (%02x:%02x.%x) irq %d\n",
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hi->devname, "MUSYCC",
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(unsigned long) hi->addr_mapped[0], hi->addr[0],
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hi->pci_busno, (u_int8_t) PCI_SLOT(pdev->devfn),
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(u_int8_t) PCI_FUNC(pdev->devfn), pdev->irq);
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pdev = hi->pdev[1];
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pr_info("%s: %s at v/p=%lx/%lx (%02x:%02x.%x) irq %d\n",
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hi->devname, "EBUS ",
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(unsigned long) hi->addr_mapped[1], hi->addr[1],
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hi->pci_busno, (u_int8_t) PCI_SLOT(pdev->devfn),
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(u_int8_t) PCI_FUNC(pdev->devfn), pdev->irq);
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}
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void __init
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hdw_sn_get(hdw_info_t *hi, int brdno)
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{
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/* obtain hardware EEPROM information */
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long addr;
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addr = (long) hi->addr_mapped[1] + EEPROM_OFFSET;
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/* read EEPROM with largest known format size... */
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pmc_eeprom_read_buffer(addr, 0, (char *)hi->mfg_info.data,
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sizeof(FLD_TYPE2));
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#if 0
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{
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unsigned char *ucp = (unsigned char *) &hi->mfg_info.data;
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pr_info("eeprom[00]: %02x %02x %02x %02x %02x %02x %02x %02x\n",
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*(ucp + 0), *(ucp + 1), *(ucp + 2), *(ucp + 3),
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*(ucp + 4), *(ucp + 5), *(ucp + 6), *(ucp + 7));
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pr_info("eeprom[08]: %02x %02x %02x %02x %02x %02x %02x %02x\n",
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*(ucp + 8), *(ucp + 9), *(ucp + 10), *(ucp + 11),
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*(ucp + 12), *(ucp + 13), *(ucp + 14), *(ucp + 15));
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pr_info("eeprom[16]: %02x %02x %02x %02x %02x %02x %02x %02x\n",
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*(ucp + 16), *(ucp + 17), *(ucp + 18), *(ucp + 19),
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*(ucp + 20), *(ucp + 21), *(ucp + 22), *(ucp + 23));
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pr_info("eeprom[24]: %02x %02x %02x %02x %02x %02x %02x %02x\n",
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*(ucp + 24), *(ucp + 25), *(ucp + 26), *(ucp + 27),
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*(ucp + 28), *(ucp + 29), *(ucp + 30), *(ucp + 31));
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pr_info("eeprom[32]: %02x %02x %02x %02x %02x %02x %02x %02x\n",
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*(ucp + 32), *(ucp + 33), *(ucp + 34), *(ucp + 35),
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*(ucp + 36), *(ucp + 37), *(ucp + 38), *(ucp + 39));
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pr_info("eeprom[40]: %02x %02x %02x %02x %02x %02x %02x %02x\n",
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*(ucp + 40), *(ucp + 41), *(ucp + 42), *(ucp + 43),
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*(ucp + 44), *(ucp + 45), *(ucp + 46), *(ucp + 47));
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}
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#endif
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#if 0
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pr_info("sn: %x %x %x %x %x %x\n",
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hi->mfg_info.Serial[0],
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hi->mfg_info.Serial[1],
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hi->mfg_info.Serial[2],
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hi->mfg_info.Serial[3],
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hi->mfg_info.Serial[4],
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hi->mfg_info.Serial[5]);
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#endif
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hi->promfmt = pmc_verify_cksum(&hi->mfg_info.data);
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if (hi->promfmt == PROM_FORMAT_Unk) {
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/* bad crc, data is suspect */
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if (cxt1e1_log_level >= LOG_WARN)
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pr_info("%s: EEPROM cksum error\n", hi->devname);
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hi->mfg_info_sts = EEPROM_CRCERR;
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} else
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hi->mfg_info_sts = EEPROM_OK;
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}
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void __init
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prep_hdw_info(void)
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{
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hdw_info_t *hi;
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int i;
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for (i = 0, hi = hdw_info; i < MAX_BOARDS; i++, hi++) {
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hi->pci_busno = 0xff;
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hi->pci_slot = 0xff;
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hi->pci_pin[0] = 0;
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hi->pci_pin[1] = 0;
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hi->ndev = NULL;
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hi->addr[0] = 0L;
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hi->addr[1] = 0L;
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hi->addr_mapped[0] = NULL;
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hi->addr_mapped[1] = NULL;
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}
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}
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void
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cleanup_ioremap(void)
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{
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hdw_info_t *hi;
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int i;
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for (i = 0, hi = hdw_info; i < MAX_BOARDS; i++, hi++) {
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if (hi->pci_slot == 0xff)
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break;
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if (hi->addr_mapped[0]) {
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iounmap(hi->addr_mapped[0]);
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release_mem_region((long) hi->addr[0], hi->len[0]);
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hi->addr_mapped[0] = NULL;
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}
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if (hi->addr_mapped[1]) {
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iounmap(hi->addr_mapped[1]);
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release_mem_region((long) hi->addr[1], hi->len[1]);
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hi->addr_mapped[1] = NULL;
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}
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}
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}
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void
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cleanup_devs(void)
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{
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hdw_info_t *hi;
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int i;
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for (i = 0, hi = hdw_info; i < MAX_BOARDS; i++, hi++) {
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if (hi->pci_slot == 0xff || !hi->ndev)
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break;
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c4_stopwd(netdev_priv(hi->ndev));
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#ifdef CONFIG_PROC_FS
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sbecom_proc_brd_cleanup(netdev_priv(hi->ndev));
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#endif
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unregister_netdev(hi->ndev);
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free_irq(hi->pdev[0]->irq, hi->ndev);
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#ifdef CONFIG_SBE_PMCC4_NCOMM
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free_irq(hi->pdev[1]->irq, hi->ndev);
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#endif
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kfree(hi->ndev);
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}
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}
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static int __init
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c4_hdw_init(struct pci_dev *pdev, int found)
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{
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hdw_info_t *hi;
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int i;
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int fun, slot;
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unsigned char busno = 0xff;
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/* our MUSYCC chip supports two functions, 0 & 1 */
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fun = PCI_FUNC(pdev->devfn);
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if (fun > 1) {
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pr_warning("unexpected devfun: 0x%x\n", pdev->devfn);
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return 0;
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}
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/* obtain bus number */
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if (pdev->bus)
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busno = pdev->bus->number;
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else
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busno = 0; /* default for system PCI inconsistency */
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slot = pdev->devfn & ~0x07;
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/*
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* Functions 0 & 1 for a given board (identified by same bus(busno) and
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* slot(slot)) are placed into the same 'hardware' structure. The first
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* part of the board's functionality will be placed into an unpopulated
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* element, identified by "slot==(0xff)". The second part of a board's
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* functionality will match the previously loaded slot/busno.
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*/
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for (i = 0, hi = hdw_info; i < MAX_BOARDS; i++, hi++) {
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/*
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* match with board's first found interface, otherwise this is
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* fisrt found
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*/
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if ((hi->pci_slot == 0xff) || /* new board */
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((hi->pci_slot == slot) && (hi->bus == pdev->bus)))
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break; /* found for-loop exit */
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}
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/* no match in above loop means MAX exceeded */
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if (i == MAX_BOARDS) {
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pr_warning("exceeded number of allowed devices (>%d)?\n",
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MAX_BOARDS);
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return 0;
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}
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if (pdev->bus)
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hi->pci_busno = pdev->bus->number;
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else
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hi->pci_busno = 0; /* default for system PCI inconsistency */
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hi->pci_slot = slot;
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pci_read_config_byte(pdev, PCI_INTERRUPT_PIN, &hi->pci_pin[fun]);
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pci_read_config_byte(pdev, PCI_REVISION_ID, &hi->revid[fun]);
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hi->bus = pdev->bus;
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hi->addr[fun] = pci_resource_start(pdev, 0);
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hi->len[fun] = pci_resource_end(pdev, 0) - hi->addr[fun] + 1;
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hi->pdev[fun] = pdev;
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{
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/*
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* create device name from module name, plus add the appropriate
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* board number
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*/
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char *cp = hi->devname;
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strcpy(cp, KBUILD_MODNAME);
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cp += strlen(cp); /* reposition */
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*cp++ = '-';
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*cp++ = '0' + (found / 2); /* there are two found interfaces per
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* board */
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*cp = 0; /* termination */
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}
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return 1;
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}
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status_t __init
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c4hw_attach_all(void)
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{
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hdw_info_t *hi;
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struct pci_dev *pdev = NULL;
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int found = 0, i, j;
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error_flag = 0;
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prep_hdw_info();
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/*** scan PCI bus for all possible boards */
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while ((pdev = pci_get_device(PCI_VENDOR_ID_CONEXANT,
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PCI_DEVICE_ID_CN8474,
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pdev))) {
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if (c4_hdw_init(pdev, found))
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found++;
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}
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if (!found) {
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pr_warning("No boards found\n");
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return -ENODEV;
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}
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/* sanity check for consistent hardware found */
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for (i = 0, hi = hdw_info; i < MAX_BOARDS; i++, hi++) {
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if (hi->pci_slot != 0xff && (!hi->addr[0] || !hi->addr[1])) {
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pr_warning("%s: something very wrong with pci_get_device\n",
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hi->devname);
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return -EIO;
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}
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}
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/* bring board's memory regions on/line */
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for (i = 0, hi = hdw_info; i < MAX_BOARDS; i++, hi++) {
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if (hi->pci_slot == 0xff)
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break;
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for (j = 0; j < 2; j++) {
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if (!request_mem_region(hi->addr[j], hi->len[j], hi->devname)) {
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pr_warning("%s: memory in use, addr=0x%lx, len=0x%lx ?\n",
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hi->devname, hi->addr[j], hi->len[j]);
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cleanup_ioremap();
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return -ENOMEM;
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}
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hi->addr_mapped[j] = ioremap(hi->addr[j], hi->len[j]);
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if (!hi->addr_mapped[j]) {
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pr_warning("%s: ioremap fails, addr=0x%lx, len=0x%lx ?\n",
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hi->devname, hi->addr[j], hi->len[j]);
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cleanup_ioremap();
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return -ENOMEM;
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}
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#ifdef SBE_MAP_DEBUG
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pr_warning("%s: io remapped from phys %x to virt %x\n",
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hi->devname, (u_int32_t) hi->addr[j],
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(u_int32_t) hi->addr_mapped[j]);
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#endif
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}
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}
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drvr_state = SBE_DRVR_AVAILABLE;
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/* Have now memory mapped all boards. Now allow board's access to system */
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for (i = 0, hi = hdw_info; i < MAX_BOARDS; i++, hi++) {
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if (hi->pci_slot == 0xff)
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break;
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if (pci_enable_device(hi->pdev[0]) ||
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pci_enable_device(hi->pdev[1])) {
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drvr_state = SBE_DRVR_DOWN;
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pr_warning("%s: failed to enable card %d slot %d\n",
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hi->devname, i, hi->pci_slot);
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cleanup_devs();
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cleanup_ioremap();
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return -EIO;
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}
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pci_set_master(hi->pdev[0]);
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pci_set_master(hi->pdev[1]);
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hi->ndev = c4_add_dev(hi, i, (long) hi->addr_mapped[0],
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(long) hi->addr_mapped[1],
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hi->pdev[0]->irq,
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hi->pdev[1]->irq);
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if (!hi->ndev) {
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drvr_state = SBE_DRVR_DOWN;
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cleanup_ioremap();
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/* NOTE: c4_add_dev() does its own device cleanup */
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#if 0
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cleanup_devs();
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#endif
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return error_flag; /* error_flag set w/in add_dev() */
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}
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show_two(hi, i); /* displays found information */
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}
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return 0;
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}
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/*** End-of-File ***/
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