hw/pci-bridge/xio3130_upstream.c

   1 /*
   2  * xio3130_upstream.c
   3  * TI X3130 pci express upstream port switch
   4  *
   5  * Copyright (c) 2010 Isaku Yamahata <yamahata at valinux co jp>
   6  *                    VA Linux Systems Japan K.K.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with this program; if not, see <http://www.gnu.org/licenses/>.
  20  */
  21
  22 #include "qemu/osdep.h"
  23 #include "hw/pci/pci_ids.h"
  24 #include "hw/pci/msi.h"
  25 #include "hw/pci/pcie.h"
  26 #include "xio3130_upstream.h"
  27
  28 #define PCI_DEVICE_ID_TI_XIO3130U       0x8232  /* upstream port */
  29 #define XIO3130_REVISION                0x2
  30 #define XIO3130_MSI_OFFSET              0x70
  31 #define XIO3130_MSI_SUPPORTED_FLAGS     PCI_MSI_FLAGS_64BIT
  32 #define XIO3130_MSI_NR_VECTOR           1
  33 #define XIO3130_SSVID_OFFSET            0x80
  34 #define XIO3130_SSVID_SVID              0
  35 #define XIO3130_SSVID_SSID              0
  36 #define XIO3130_EXP_OFFSET              0x90
  37 #define XIO3130_AER_OFFSET              0x100
  38
  39 static void xio3130_upstream_write_config(PCIDevice *d, uint32_t address,
  40                                           uint32_t val, int len)
  41 {
  42     pci_bridge_write_config(d, address, val, len);
  43     pcie_cap_flr_write_config(d, address, val, len);
  44     pcie_aer_write_config(d, address, val, len);
  45 }
  46
  47 static void xio3130_upstream_reset(DeviceState *qdev)
  48 {
  49     PCIDevice *d = PCI_DEVICE(qdev);
  50
  51     pci_bridge_reset(qdev);
  52     pcie_cap_deverr_reset(d);
  53 }
  54
  55 static int xio3130_upstream_initfn(PCIDevice *d)
  56 {
  57     PCIEPort *p = PCIE_PORT(d);
  58     int rc;
  59
  60     pci_bridge_initfn(d, TYPE_PCIE_BUS);
  61     pcie_port_init_reg(d);
  62
  63     rc = msi_init(d, XIO3130_MSI_OFFSET, XIO3130_MSI_NR_VECTOR,
  64                   XIO3130_MSI_SUPPORTED_FLAGS & PCI_MSI_FLAGS_64BIT,
  65                   XIO3130_MSI_SUPPORTED_FLAGS & PCI_MSI_FLAGS_MASKBIT);
  66     if (rc < 0) {
  67         goto err_bridge;
  68     }
  69     rc = pci_bridge_ssvid_init(d, XIO3130_SSVID_OFFSET,
  70                                XIO3130_SSVID_SVID, XIO3130_SSVID_SSID);
  71     if (rc < 0) {
  72         goto err_bridge;
  73     }
  74     rc = pcie_cap_init(d, XIO3130_EXP_OFFSET, PCI_EXP_TYPE_UPSTREAM,
  75                        p->port);
  76     if (rc < 0) {
  77         goto err_msi;
  78     }
  79     pcie_cap_flr_init(d);
  80     pcie_cap_deverr_init(d);
  81     rc = pcie_aer_init(d, XIO3130_AER_OFFSET);
  82     if (rc < 0) {
  83         goto err;
  84     }
  85
  86     return 0;
  87
  88 err:
  89     pcie_cap_exit(d);
  90 err_msi:
  91     msi_uninit(d);
  92 err_bridge:
  93     pci_bridge_exitfn(d);
  94     return rc;
  95 }
  96
  97 static void xio3130_upstream_exitfn(PCIDevice *d)
  98 {
  99     pcie_aer_exit(d);
 100     pcie_cap_exit(d);
 101     msi_uninit(d);
 102     pci_bridge_exitfn(d);
 103 }
 104
 105 PCIEPort *xio3130_upstream_init(PCIBus *bus, int devfn, bool multifunction,
 106                              const char *bus_name, pci_map_irq_fn map_irq,
 107                              uint8_t port)
 108 {
 109     PCIDevice *d;
 110     PCIBridge *br;
 111     DeviceState *qdev;
 112
 113     d = pci_create_multifunction(bus, devfn, multifunction, "x3130-upstream");
 114     if (!d) {
 115         return NULL;
 116     }
 117     br = PCI_BRIDGE(d);
 118
 119     qdev = DEVICE(d);
 120     pci_bridge_map_irq(br, bus_name, map_irq);
 121     qdev_prop_set_uint8(qdev, "port", port);
 122     qdev_init_nofail(qdev);
 123
 124     return PCIE_PORT(d);
 125 }
 126
 127 static const VMStateDescription vmstate_xio3130_upstream = {
 128     .name = "xio3130-express-upstream-port",
 129     .version_id = 1,
 130     .minimum_version_id = 1,
 131     .fields = (VMStateField[]) {
 132         VMSTATE_PCIE_DEVICE(parent_obj.parent_obj, PCIEPort),
 133         VMSTATE_STRUCT(parent_obj.parent_obj.exp.aer_log, PCIEPort, 0,
 134                        vmstate_pcie_aer_log, PCIEAERLog),
 135         VMSTATE_END_OF_LIST()
 136     }
 137 };
 138
 139 static void xio3130_upstream_class_init(ObjectClass *klass, void *data)
 140 {
 141     DeviceClass *dc = DEVICE_CLASS(klass);
 142     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 143
 144     k->is_express = 1;
 145     k->is_bridge = 1;
 146     k->config_write = xio3130_upstream_write_config;
 147     k->init = xio3130_upstream_initfn;
 148     k->exit = xio3130_upstream_exitfn;
 149     k->vendor_id = PCI_VENDOR_ID_TI;
 150     k->device_id = PCI_DEVICE_ID_TI_XIO3130U;
 151     k->revision = XIO3130_REVISION;
 152     set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
 153     dc->desc = "TI X3130 Upstream Port of PCI Express Switch";
 154     dc->reset = xio3130_upstream_reset;
 155     dc->vmsd = &vmstate_xio3130_upstream;
 156 }
 157
 158 static const TypeInfo xio3130_upstream_info = {
 159     .name          = "x3130-upstream",
 160     .parent        = TYPE_PCIE_PORT,
 161     .class_init    = xio3130_upstream_class_init,
 162 };
 163
 164 static void xio3130_upstream_register_types(void)
 165 {
 166     type_register_static(&xio3130_upstream_info);
 167 }
 168
 169 type_init(xio3130_upstream_register_types)
 170
 171
 172 /*
 173  * Local variables:
 174  *  c-indent-level: 4
 175  *  c-basic-offset: 4
 176  *  tab-width: 8
 177  *  indent-tab-mode: nil
 178  * End:
 179  */