include/ddekit/pci.h

   1 #ifndef _DDEKIT_PCI_H
   2 #define _DDEKIT_PCI_H
   3 #include <ddekit/ddekit.h>
   4
   5 #include <ddekit/types.h>
   6
   7 /** \defgroup DDEKit_pci */
   8
   9 /** Our version of PCI_ANY_ID */
  10 #define DDEKIT_PCI_ANY_ID    (~0)
  11
  12 /** Copy of L4IO_PCIDEV_RES */
  13 #define DDEKIT_PCIDEV_RES        12
  14
  15 struct ddekit_pci_dev;
  16
  17 /** PCI resource descriptor. Copied from generic_io.
  18  *
  19  * XXX!
  20  */
  21 typedef struct ddekit_pci_resource {
  22         unsigned long start;
  23         unsigned long end;
  24         unsigned long flags;
  25 } ddekit_pci_res_t;
  26
  27 void ddekit_pci_init(void);
  28
  29 int ddekit_pci_get_device(int nr, int *bus, int *slot, int *func);
  30
  31 int ddekit_pci_read(int bus, int slot, int func, int pos, int len,
  32         ddekit_uint32_t *val);
  33 int ddekit_pci_write(int bus, int slot, int func, int pos, int len,
  34         ddekit_uint32_t val);
  35
  36 /** Read byte from PCI config space.
  37  *
  38  * \ingroup DDEKit_pci
  39  *
  40  * \param bus      bus ID
  41  * \param slot     slot #
  42  * \param func     function #
  43  * \param pos      offset in config space
  44  * \retval val     read value
  45  *
  46  * \return 0       success
  47  */
  48 int ddekit_pci_readb(int bus, int slot, int func, int pos,
  49         ddekit_uint8_t *val);
  50
  51 /** Read word from PCI config space.
  52  *
  53  * \ingroup DDEKit_pci
  54  *
  55  * \param bus      bus ID
  56  * \param slot     slot #
  57  * \param func     function #
  58  * \param pos      offset in config space
  59  * \retval val     read value
  60  *
  61  * \return 0       success
  62  */
  63 int ddekit_pci_readw(int bus, int slot, int func, int pos,
  64         ddekit_uint16_t *val);
  65
  66 /** Read dword from PCI config space.
  67  *
  68  * \ingroup DDEKit_pci
  69  *
  70  * \param bus      bus ID
  71  * \param slot     slot #
  72  * \param func     function #
  73  * \param pos      offset in config space
  74  * \retval val     read value
  75  *
  76  * \return 0       success
  77  */
  78 int ddekit_pci_readl(int bus, int slot, int func, int pos,
  79         ddekit_uint32_t *val);
  80
  81 /** Write byte to PCI config space.
  82  *
  83  * \ingroup DDEKit_pci
  84  *
  85  * \param bus      bus ID
  86  * \param slot     slot #
  87  * \param func     function #
  88  * \param pos      offset in config space
  89  * \retval val     value to write
  90  *
  91  * \return 0       success
  92  */
  93 int ddekit_pci_writeb(int bus, int slot, int func, int pos,
  94         ddekit_uint8_t val);
  95
  96 /** Write word to PCI config space.
  97  *
  98  * \ingroup DDEKit_pci
  99  *
 100  * \param bus      bus ID
 101  * \param slot     slot #
 102  * \param func     function #
 103  * \param pos      offset in config space
 104  * \retval val     value to write
 105  *
 106  * \return 0       success
 107  */
 108 int ddekit_pci_writew(int bus, int slot, int func, int pos,
 109         ddekit_uint16_t val);
 110
 111 /** Write word to PCI config space.
 112  *
 113  * \ingroup DDEKit_pci
 114  *
 115  * \param bus      bus ID
 116  * \param slot     slot #
 117  * \param func     function #
 118  * \param pos      offset in config space
 119  * \retval val     value to write
 120  *
 121  * \return 0       success
 122  */
 123 int ddekit_pci_writel(int bus, int slot, int func, int pos,
 124         ddekit_uint32_t val);
 125
 126 /** Find a PCI device.
 127  *
 128  * \ingroup DDEKit_pci
 129  *
 130  * \param bus   pointer to bus number or \ref DDEKIT_PCI_ANY_ID
 131  * \param slot  pointer to slot number (devfn >> DEVFN_SLOTSHIFT) or \ref DDEKIT_PCI_ANY_ID
 132  * \param func  pointer to func number (devfc & DEVFN_FUNCMASK) or \ref DDEKIT_PCI_ANY_ID
 133  * \param start search device list only behind this device (excluding it!), NULL
 134  *              searches whole device list
 135  *
 136  * \retval bus      bus number
 137  * \retval slot     slot number
 138  * \retval func     function number
 139  *
 140  * \return device   a valid PCI device
 141  * \return NULL     if no device found
 142  */
 143 struct ddekit_pci_dev * ddekit_pci_find_device(int *bus, int *slot, int
 144         *func, struct ddekit_pci_dev *start);
 145
 146 /** Enable PCI device
 147  * \ingroup DDEKit_pci
 148  */
 149 int ddekit_pci_enable_device(struct ddekit_pci_dev *dev);
 150
 151 /** Disable PCI device
 152  * \ingroup DDEKit_pci
 153  */
 154 int ddekit_pci_disable_device(struct ddekit_pci_dev *dev);
 155
 156 /** Enable bus-mastering for device.
 157  * \ingroup DDEKit_pci
 158  */
 159 void ddekit_pci_set_master(struct ddekit_pci_dev *dev);
 160
 161 /** Get device vendor ID.
 162  * \ingroup DDEKit_pci
 163  */
 164 unsigned short ddekit_pci_get_vendor(struct ddekit_pci_dev *dev);
 165
 166 /** Get device ID.
 167  * \ingroup DDEKit_pci
 168  */
 169 unsigned short ddekit_pci_get_device_id(struct ddekit_pci_dev *dev);
 170
 171 /** Get device subvendor ID.
 172  * \ingroup DDEKit_pci
 173  */
 174 unsigned short ddekit_pci_get_sub_vendor(struct ddekit_pci_dev *dev);
 175
 176 /** Get subdevice ID.
 177  * \ingroup DDEKit_pci
 178  */
 179 unsigned short ddekit_pci_get_sub_device(struct ddekit_pci_dev *dev);
 180
 181 /** Get device class ID.
 182  * \ingroup DDEKit_pci
 183  */
 184 unsigned ddekit_pci_get_dev_class(struct ddekit_pci_dev *dev);
 185
 186 /** Get device's IRQ number.
 187  * \ingroup DDEKit_pci
 188  */
 189 unsigned long ddekit_pci_get_irq(struct ddekit_pci_dev *dev);
 190
 191 /** Get device name.
 192  * \ingroup DDEKit_pci
 193  */
 194 char *ddekit_pci_get_name(struct ddekit_pci_dev *dev);
 195
 196 /** Get device's slot name.
 197  * \ingroup DDEKit_pci
 198  */
 199 char *ddekit_pci_get_slot_name(struct ddekit_pci_dev *dev);
 200
 201 /** Get one of the device's resources.
 202  * \ingroup DDEKit_pci
 203  */
 204 ddekit_pci_res_t *ddekit_pci_get_resource(struct ddekit_pci_dev *dev,
 205         unsigned int idx);
 206
 207 int ddekit_pci_irq_enable(int bus, int slot, int func, int pin, int
 208         *irq);
 209
 210 #endif