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authorIsaku Yamahata <yamahata@valinux.co.jp>2010-10-20 17:18:55 +0900
committerMichael S. Tsirkin <mst@redhat.com>2010-10-20 12:06:53 +0200
commit48ebf2f90f8fba8c03c0bfdb3bd4fe1e8fd5d61b (patch)
treee4cfeb65288aa6f06f4eafb3ba56f85f26bc4b57 /hw/xio3130_downstream.c
parentfaf1e708d5b432757d88b7229fc3b5f2e71cfb2e (diff)
x3130: pcie downstream port
Implement TI x3130 pcie downstream port switch. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw/xio3130_downstream.c')
-rw-r--r--hw/xio3130_downstream.c190
1 files changed, 190 insertions, 0 deletions
diff --git a/hw/xio3130_downstream.c b/hw/xio3130_downstream.c
new file mode 100644
index 000000000..a44e18819
--- /dev/null
+++ b/hw/xio3130_downstream.c
@@ -0,0 +1,190 @@
+/*
+ * x3130_downstream.c
+ * TI X3130 pci express downstream port switch
+ *
+ * Copyright (c) 2010 Isaku Yamahata <yamahata at valinux co jp>
+ * VA Linux Systems Japan K.K.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "pci_ids.h"
+#include "msi.h"
+#include "pcie.h"
+#include "xio3130_downstream.h"
+
+#define PCI_DEVICE_ID_TI_XIO3130D 0x8233 /* downstream port */
+#define XIO3130_REVISION 0x1
+#define XIO3130_MSI_OFFSET 0x70
+#define XIO3130_MSI_SUPPORTED_FLAGS PCI_MSI_FLAGS_64BIT
+#define XIO3130_MSI_NR_VECTOR 1
+#define XIO3130_SSVID_OFFSET 0x80
+#define XIO3130_SSVID_SVID 0
+#define XIO3130_SSVID_SSID 0
+#define XIO3130_EXP_OFFSET 0x90
+#define XIO3130_AER_OFFSET 0x100
+
+static void xio3130_downstream_write_config(PCIDevice *d, uint32_t address,
+ uint32_t val, int len)
+{
+ uint16_t sltctl =
+ pci_get_word(d->config + d->exp.exp_cap + PCI_EXP_SLTCTL);
+
+ pci_bridge_write_config(d, address, val, len);
+ pcie_cap_flr_write_config(d, address, val, len);
+ pcie_cap_slot_write_config(d, address, val, len, sltctl);
+ msi_write_config(d, address, val, len);
+ /* TODO: AER */
+}
+
+static void xio3130_downstream_reset(DeviceState *qdev)
+{
+ PCIDevice *d = DO_UPCAST(PCIDevice, qdev, qdev);
+ msi_reset(d);
+ pcie_cap_deverr_reset(d);
+ pcie_cap_slot_reset(d);
+ pcie_cap_ari_reset(d);
+ pci_bridge_reset(qdev);
+}
+
+static int xio3130_downstream_initfn(PCIDevice *d)
+{
+ PCIBridge* br = DO_UPCAST(PCIBridge, dev, d);
+ PCIEPort *p = DO_UPCAST(PCIEPort, br, br);
+ PCIESlot *s = DO_UPCAST(PCIESlot, port, p);
+ int rc;
+
+ rc = pci_bridge_initfn(d);
+ if (rc < 0) {
+ return rc;
+ }
+
+ pcie_port_init_reg(d);
+ pci_config_set_vendor_id(d->config, PCI_VENDOR_ID_TI);
+ pci_config_set_device_id(d->config, PCI_DEVICE_ID_TI_XIO3130D);
+ d->config[PCI_REVISION_ID] = XIO3130_REVISION;
+
+ rc = msi_init(d, XIO3130_MSI_OFFSET, XIO3130_MSI_NR_VECTOR,
+ XIO3130_MSI_SUPPORTED_FLAGS & PCI_MSI_FLAGS_64BIT,
+ XIO3130_MSI_SUPPORTED_FLAGS & PCI_MSI_FLAGS_MASKBIT);
+ if (rc < 0) {
+ return rc;
+ }
+ rc = pci_bridge_ssvid_init(d, XIO3130_SSVID_OFFSET,
+ XIO3130_SSVID_SVID, XIO3130_SSVID_SSID);
+ if (rc < 0) {
+ return rc;
+ }
+ rc = pcie_cap_init(d, XIO3130_EXP_OFFSET, PCI_EXP_TYPE_DOWNSTREAM,
+ p->port);
+ if (rc < 0) {
+ return rc;
+ }
+ pcie_cap_flr_init(d); /* TODO: implement FLR */
+ pcie_cap_deverr_init(d);
+ pcie_cap_slot_init(d, s->slot);
+ pcie_chassis_create(s->chassis);
+ rc = pcie_chassis_add_slot(s);
+ if (rc < 0) {
+ return rc;
+ }
+ pcie_cap_ari_init(d);
+ /* TODO: AER */
+
+ return 0;
+}
+
+static int xio3130_downstream_exitfn(PCIDevice *d)
+{
+ /* TODO: AER */
+ msi_uninit(d);
+ pcie_cap_exit(d);
+ return pci_bridge_exitfn(d);
+}
+
+PCIESlot *xio3130_downstream_init(PCIBus *bus, int devfn, bool multifunction,
+ const char *bus_name, pci_map_irq_fn map_irq,
+ uint8_t port, uint8_t chassis,
+ uint16_t slot)
+{
+ PCIDevice *d;
+ PCIBridge *br;
+ DeviceState *qdev;
+
+ d = pci_create_multifunction(bus, devfn, multifunction,
+ "xio3130-downstream");
+ if (!d) {
+ return NULL;
+ }
+ br = DO_UPCAST(PCIBridge, dev, d);
+
+ qdev = &br->dev.qdev;
+ pci_bridge_map_irq(br, bus_name, map_irq);
+ qdev_prop_set_uint8(qdev, "port", port);
+ qdev_prop_set_uint8(qdev, "chassis", chassis);
+ qdev_prop_set_uint16(qdev, "slot", slot);
+ qdev_init_nofail(qdev);
+
+ return DO_UPCAST(PCIESlot, port, DO_UPCAST(PCIEPort, br, br));
+}
+
+static const VMStateDescription vmstate_xio3130_downstream = {
+ .name = "xio3130-express-downstream-port",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .minimum_version_id_old = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_PCIE_DEVICE(port.br.dev, PCIESlot),
+ /* TODO: AER */
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static PCIDeviceInfo xio3130_downstream_info = {
+ .qdev.name = "xio3130-downstream",
+ .qdev.desc = "TI X3130 Downstream Port of PCI Express Switch",
+ .qdev.size = sizeof(PCIESlot),
+ .qdev.reset = xio3130_downstream_reset,
+ .qdev.vmsd = &vmstate_xio3130_downstream,
+
+ .is_express = 1,
+ .is_bridge = 1,
+ .config_write = xio3130_downstream_write_config,
+ .init = xio3130_downstream_initfn,
+ .exit = xio3130_downstream_exitfn,
+
+ .qdev.props = (Property[]) {
+ DEFINE_PROP_UINT8("port", PCIESlot, port.port, 0),
+ DEFINE_PROP_UINT8("chassis", PCIESlot, chassis, 0),
+ DEFINE_PROP_UINT16("slot", PCIESlot, slot, 0),
+ /* TODO: AER */
+ DEFINE_PROP_END_OF_LIST(),
+ }
+};
+
+static void xio3130_downstream_register(void)
+{
+ pci_qdev_register(&xio3130_downstream_info);
+}
+
+device_init(xio3130_downstream_register);
+
+/*
+ * Local variables:
+ * c-indent-level: 4
+ * c-basic-offset: 4
+ * tab-width: 8
+ * indent-tab-mode: nil
+ * End:
+ */