drivers/scsi/bfa/bfad_fwimg.c

   1 /*
   2  * Copyright (c) 2005-2009 Brocade Communications Systems, Inc.
   3  * All rights reserved
   4  * www.brocade.com
   5  *
   6  * Linux driver for Brocade Fibre Channel Host Bus Adapter.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License (GPL) Version 2 as
  10  * published by the Free Software Foundation
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  */
  17
  18 /**
  19  *  bfad_fwimg.c Linux driver PCI interface module.
  20  */
  21 #include <bfa_os_inc.h>
  22 #include <bfad_drv.h>
  23 #include <bfad_im_compat.h>
  24 #include <defs/bfa_defs_version.h>
  25 #include <linux/errno.h>
  26 #include <linux/sched.h>
  27 #include <linux/init.h>
  28 #include <linux/fs.h>
  29 #include <asm/uaccess.h>
  30 #include <asm/fcntl.h>
  31 #include <linux/pci.h>
  32 #include <linux/firmware.h>
  33 #include <bfa_fwimg_priv.h>
  34 #include <bfa.h>
  35
  36 u32 bfi_image_ct_size;
  37 u32 bfi_image_cb_size;
  38 u32 *bfi_image_ct;
  39 u32 *bfi_image_cb;
  40
  41
  42 #define BFAD_FW_FILE_CT "ctfw.bin"
  43 #define BFAD_FW_FILE_CB "cbfw.bin"
  44
  45 u32 *
  46 bfad_read_firmware(struct pci_dev *pdev, u32 **bfi_image,
  47                         u32 *bfi_image_size, char *fw_name)
  48 {
  49         const struct firmware *fw;
  50
  51         if (request_firmware(&fw, fw_name, &pdev->dev)) {
  52                 printk(KERN_ALERT "Can't locate firmware %s\n", fw_name);
  53                 goto error;
  54         }
  55
  56         *bfi_image = vmalloc(fw->size);
  57         if (NULL == *bfi_image) {
  58                 printk(KERN_ALERT "Fail to allocate buffer for fw image "
  59                         "size=%x!\n", (u32) fw->size);
  60                 goto error;
  61         }
  62
  63         memcpy(*bfi_image, fw->data, fw->size);
  64         *bfi_image_size = fw->size/sizeof(u32);
  65
  66         return(*bfi_image);
  67
  68 error:
  69         return(NULL);
  70 }
  71
  72 u32 *
  73 bfad_get_firmware_buf(struct pci_dev *pdev)
  74 {
  75         if (pdev->device == BFA_PCI_DEVICE_ID_CT) {
  76                 if (bfi_image_ct_size == 0)
  77                         bfad_read_firmware(pdev, &bfi_image_ct,
  78                                 &bfi_image_ct_size, BFAD_FW_FILE_CT);
  79                 return(bfi_image_ct);
  80         } else {
  81                 if (bfi_image_cb_size == 0)
  82                         bfad_read_firmware(pdev, &bfi_image_cb,
  83                                 &bfi_image_cb_size, BFAD_FW_FILE_CB);
  84                 return(bfi_image_cb);
  85         }
  86 }
  87
  88 u32 *
  89 bfi_image_ct_get_chunk(u32 off)
  90 { return (u32 *)(bfi_image_ct + off); }
  91
  92 u32 *
  93 bfi_image_cb_get_chunk(u32 off)
  94 { return (u32 *)(bfi_image_cb + off); }
  95