release/src-rt-6.x.4708/linux/linux-2.6.36/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_fc_size;
  37 u32 bfi_image_ct_cna_size;
  38 u32 bfi_image_cb_fc_size;
  39 u32 *bfi_image_ct_fc;
  40 u32 *bfi_image_ct_cna;
  41 u32 *bfi_image_cb_fc;
  42
  43
  44 #define BFAD_FW_FILE_CT_FC      "ctfw_fc.bin"
  45 #define BFAD_FW_FILE_CT_CNA     "ctfw_cna.bin"
  46 #define BFAD_FW_FILE_CB_FC      "cbfw_fc.bin"
  47 MODULE_FIRMWARE(BFAD_FW_FILE_CT_FC);
  48 MODULE_FIRMWARE(BFAD_FW_FILE_CT_CNA);
  49 MODULE_FIRMWARE(BFAD_FW_FILE_CB_FC);
  50
  51 u32 *
  52 bfad_read_firmware(struct pci_dev *pdev, u32 **bfi_image,
  53                         u32 *bfi_image_size, char *fw_name)
  54 {
  55         const struct firmware *fw;
  56
  57         if (request_firmware(&fw, fw_name, &pdev->dev)) {
  58                 printk(KERN_ALERT "Can't locate firmware %s\n", fw_name);
  59                 goto error;
  60         }
  61
  62         *bfi_image = vmalloc(fw->size);
  63         if (NULL == *bfi_image) {
  64                 printk(KERN_ALERT "Fail to allocate buffer for fw image "
  65                         "size=%x!\n", (u32) fw->size);
  66                 goto error;
  67         }
  68
  69         memcpy(*bfi_image, fw->data, fw->size);
  70         *bfi_image_size = fw->size/sizeof(u32);
  71
  72         return *bfi_image;
  73
  74 error:
  75         return NULL;
  76 }
  77
  78 u32 *
  79 bfad_get_firmware_buf(struct pci_dev *pdev)
  80 {
  81         if (pdev->device == BFA_PCI_DEVICE_ID_CT_FC) {
  82                 if (bfi_image_ct_fc_size == 0)
  83                         bfad_read_firmware(pdev, &bfi_image_ct_fc,
  84                                 &bfi_image_ct_fc_size, BFAD_FW_FILE_CT_FC);
  85                 return bfi_image_ct_fc;
  86         } else if (pdev->device == BFA_PCI_DEVICE_ID_CT) {
  87                 if (bfi_image_ct_cna_size == 0)
  88                         bfad_read_firmware(pdev, &bfi_image_ct_cna,
  89                                 &bfi_image_ct_cna_size, BFAD_FW_FILE_CT_CNA);
  90                 return bfi_image_ct_cna;
  91         } else {
  92                 if (bfi_image_cb_fc_size == 0)
  93                         bfad_read_firmware(pdev, &bfi_image_cb_fc,
  94                                 &bfi_image_cb_fc_size, BFAD_FW_FILE_CB_FC);
  95                 return bfi_image_cb_fc;
  96         }
  97 }
  98
  99 u32 *
 100 bfi_image_ct_fc_get_chunk(u32 off)
 101 { return (u32 *)(bfi_image_ct_fc + off); }
 102
 103 u32 *
 104 bfi_image_ct_cna_get_chunk(u32 off)
 105 { return (u32 *)(bfi_image_ct_cna + off); }
 106
 107 u32 *
 108 bfi_image_cb_fc_get_chunk(u32 off)
 109 { return (u32 *)(bfi_image_cb_fc + off); }
 110
 111 uint32_t *
 112 bfi_image_get_chunk(int type, uint32_t off)
 113 {
 114         switch (type) {
 115         case BFI_IMAGE_CT_FC: return bfi_image_ct_fc_get_chunk(off); break;
 116         case BFI_IMAGE_CT_CNA: return bfi_image_ct_cna_get_chunk(off); break;
 117         case BFI_IMAGE_CB_FC: return bfi_image_cb_fc_get_chunk(off); break;
 118         default: return 0; break;
 119         }
 120 }
 121
 122 uint32_t
 123 bfi_image_get_size(int type)
 124 {
 125         switch (type) {
 126         case BFI_IMAGE_CT_FC: return bfi_image_ct_fc_size; break;
 127         case BFI_IMAGE_CT_CNA: return bfi_image_ct_cna_size; break;
 128         case BFI_IMAGE_CB_FC: return bfi_image_cb_fc_size; break;
 129         default: return 0; break;
 130         }
 131 }