vmod/driver/mod-pci.h

   1 /**
   2  * @file mod-pci.h
   3  *
   4  * @brief MOD-PCI ADC definitions
   5  *
   6  * The Janz MOD-PCI module is a PCI carrier board
   7  * handling up to 2 mezzanine cards.
   8  *
   9  * This file provides the definitions for low-level access to
  10  * its registers
  11  *
  12  * Copyright (c) 2009 CERN
  13  * @author Juan David Gonzalez Cobas <dcobas@cern.ch>
  14  *
  15  * @section license_sec License
  16  * Released under the GPL v2. (and only v2, not any later version)
  17  */
  18
  19 #ifndef _MOD_PCI_H_
  20 #define _MOD_PCI_H_
  21
  22 /* Vendor/Device IDs for JANZ MOD-PCI */
  23 #define PCI_VENDOR_ID_JANZ              0x10b5
  24 #define PCI_DEVICE_ID_JANZ_MOD_PCI_1    0x9030  /* PLX9030-based */
  25 #define PCI_DEVICE_ID_JANZ_MOD_PCI_2    0x9050  /* PLX9050-based */
  26
  27 #define PCI_SUBSYSTEM_VENDOR_ID_JANZ    0x13c3
  28 #define PCI_SUBSYSTEM_ID_MOD_PCI_1_0    0x0200  /* MOD-PCI revisions */
  29 #define PCI_SUBSYSTEM_ID_MOD_PCI_2_0    0x0201
  30 #define PCI_SUBSYSTEM_ID_MOD_PCI_2_1    0x0201
  31 #define PCI_SUBSYSTEM_ID_MOD_PCI_3_0    0x0202
  32
  33 /* MOD-PCI BARs base address registers */
  34 #define MOD_PCI_CONFIG_MMIO_BAR         0
  35 #define MOD_PCI_CONFIG_IO_BAR           1
  36 #define MOD_PCI_LITTLE_BAR              2
  37 #define MOD_PCI_BIG_BAR                 3
  38 #define MOD_PCI_ONBOARD_REGS_BAR        4
  39 #define MOD_PCI_UNUSED_BAR              5
  40
  41 #define MOD_PCI_BIG_BAR_OFFSET  \
  42         (sizeof(u32)*MOD_PCI_BIG_BAR)
  43
  44 #define MOD_PCI_CONFIG_MMIO_BAR_SIZE    128
  45 #define MOD_PCI_CONFIG_IO_BAR_SIZE      128
  46 #define MOD_PCI_LITTLE_BAR_SIZE         4096
  47 #define MOD_PCI_BIG_BAR_SIZE            4096
  48 #define MOD_PCI_ONBOARD_REGS_BAR_SIZE   4096
  49 #define MOD_PCI_UNUSED_BAR_SIZE         0
  50
  51 /* MODULbus memory space offsets */
  52 #define MOD_PCI_SLOTS                   2
  53 #define MOD_PCI_SLOT0_OFFSET    0x000
  54 #define MOD_PCI_SLOT1_OFFSET    0x200
  55 #define MOD_PCI_WIDTH           16
  56 #define MOD_PCI_WINDOW_SIZE     2048
  57
  58 /* On-board registers offsets */
  59 /* WARNING: all byte-only accesses */
  60 #define MOD_PCI_INT_STAT        0x1     /* read access */
  61 #define MOD_PCI_INT_DISABLE     0x1     /* write access */
  62 #define MOD_PCI_MBUS_NUM        0x3     /* read access */
  63 #define MOD_PCI_INT_ENABLE      0x3     /* write access */
  64 #define MOD_PCI_RESET_ASSERT    0x5     /* write access */
  65 #define MOD_PCI_RESET_DEASSERT  0x7     /* write access */
  66 #define MOD_PCI_EEP             0x9     /* r/w access */
  67 #define MOD_PCI_ENID            0xb     /* write/access */
  68
  69 /** map of the onboard registers at BAR#4 */
  70 struct onboard {
  71         unsigned char   unused1;
  72         union {
  73         unsigned char   int_stat;
  74         unsigned char   int_disable;
  75         };
  76         unsigned char   unused2;
  77         union {
  78         unsigned char   mbus_num;
  79         unsigned char   int_enable;
  80         };
  81         unsigned char   unused3;
  82         unsigned char   reset_assert;
  83         unsigned char   unused4;
  84         unsigned char   reset_deassert;
  85         unsigned char   unused5;
  86         unsigned char   eep;
  87         unsigned char   unused6;
  88         unsigned char   unused7;
  89         unsigned char   enid;
  90 };
  91
  92 /** description of a mod-pci module */
  93 struct mod_pci {
  94         int             lun;            /* logical unit number */
  95         int             bus_number;     /* pci bus number */
  96         int             slot_number;    /* pci slot number */
  97         void __iomem    *vaddr;         /* virtual address of MODULBUS
  98                                                 space */
  99         struct onboard
 100                 __iomem *onboard;       /* on-board registers */
 101 };
 102
 103 #endif /* _MOD_PCI_H_ */