tests/libqos/pci.c

   1 /*
   2  * libqos PCI bindings
   3  *
   4  * Copyright IBM, Corp. 2012-2013
   5  *
   6  * Authors:
   7  *  Anthony Liguori   <aliguori@us.ibm.com>
   8  *
   9  * This work is licensed under the terms of the GNU GPL, version 2 or later.
  10  * See the COPYING file in the top-level directory.
  11  */
  12
  13 #include "libqos/pci.h"
  14
  15 #include "hw/pci/pci_regs.h"
  16 #include <glib.h>
  17
  18 #include <stdio.h>
  19
  20 void qpci_device_foreach(QPCIBus *bus, int vendor_id, int device_id,
  21                          void (*func)(QPCIDevice *dev, int devfn, void *data),
  22                          void *data)
  23 {
  24     int slot;
  25
  26     for (slot = 0; slot < 32; slot++) {
  27         int fn;
  28
  29         for (fn = 0; fn < 8; fn++) {
  30             QPCIDevice *dev;
  31
  32             dev = qpci_device_find(bus, QPCI_DEVFN(slot, fn));
  33             if (!dev) {
  34                 continue;
  35             }
  36
  37             if (vendor_id != -1 &&
  38                 qpci_config_readw(dev, PCI_VENDOR_ID) != vendor_id) {
  39                 continue;
  40             }
  41
  42             if (device_id != -1 &&
  43                 qpci_config_readw(dev, PCI_DEVICE_ID) != device_id) {
  44                 continue;
  45             }
  46
  47             func(dev, QPCI_DEVFN(slot, fn), data);
  48         }
  49     }
  50 }
  51
  52 QPCIDevice *qpci_device_find(QPCIBus *bus, int devfn)
  53 {
  54     QPCIDevice *dev;
  55
  56     dev = g_malloc0(sizeof(*dev));
  57     dev->bus = bus;
  58     dev->devfn = devfn;
  59
  60     if (qpci_config_readw(dev, PCI_VENDOR_ID) == 0xFFFF) {
  61         g_free(dev);
  62         return NULL;
  63     }
  64
  65     return dev;
  66 }
  67
  68 void qpci_device_enable(QPCIDevice *dev)
  69 {
  70     uint16_t cmd;
  71
  72     /* FIXME -- does this need to be a bus callout? */
  73     cmd = qpci_config_readw(dev, PCI_COMMAND);
  74     cmd |= PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER;
  75     qpci_config_writew(dev, PCI_COMMAND, cmd);
  76 }
  77
  78 uint8_t qpci_config_readb(QPCIDevice *dev, uint8_t offset)
  79 {
  80     return dev->bus->config_readb(dev->bus, dev->devfn, offset);
  81 }
  82
  83 uint16_t qpci_config_readw(QPCIDevice *dev, uint8_t offset)
  84 {
  85     return dev->bus->config_readw(dev->bus, dev->devfn, offset);
  86 }
  87
  88 uint32_t qpci_config_readl(QPCIDevice *dev, uint8_t offset)
  89 {
  90     return dev->bus->config_readl(dev->bus, dev->devfn, offset);
  91 }
  92
  93
  94 void qpci_config_writeb(QPCIDevice *dev, uint8_t offset, uint8_t value)
  95 {
  96     dev->bus->config_writeb(dev->bus, dev->devfn, offset, value);
  97 }
  98
  99 void qpci_config_writew(QPCIDevice *dev, uint8_t offset, uint16_t value)
 100 {
 101     dev->bus->config_writew(dev->bus, dev->devfn, offset, value);
 102 }
 103
 104 void qpci_config_writel(QPCIDevice *dev, uint8_t offset, uint32_t value)
 105 {
 106     dev->bus->config_writew(dev->bus, dev->devfn, offset, value);
 107 }
 108
 109
 110 uint8_t qpci_io_readb(QPCIDevice *dev, void *data)
 111 {
 112     return dev->bus->io_readb(dev->bus, data);
 113 }
 114
 115 uint16_t qpci_io_readw(QPCIDevice *dev, void *data)
 116 {
 117     return dev->bus->io_readw(dev->bus, data);
 118 }
 119
 120 uint32_t qpci_io_readl(QPCIDevice *dev, void *data)
 121 {
 122     return dev->bus->io_readl(dev->bus, data);
 123 }
 124
 125
 126 void qpci_io_writeb(QPCIDevice *dev, void *data, uint8_t value)
 127 {
 128     dev->bus->io_writeb(dev->bus, data, value);
 129 }
 130
 131 void qpci_io_writew(QPCIDevice *dev, void *data, uint16_t value)
 132 {
 133     dev->bus->io_writew(dev->bus, data, value);
 134 }
 135
 136 void qpci_io_writel(QPCIDevice *dev, void *data, uint32_t value)
 137 {
 138     dev->bus->io_writel(dev->bus, data, value);
 139 }
 140
 141 void *qpci_iomap(QPCIDevice *dev, int barno)
 142 {
 143     return dev->bus->iomap(dev->bus, dev, barno);
 144 }
 145
 146 void qpci_iounmap(QPCIDevice *dev, void *data)
 147 {
 148     dev->bus->iounmap(dev->bus, data);
 149 }
 150
 151