diff options
Diffstat (limited to 'hw/ppc/spapr_pci.c')
| -rw-r--r-- | hw/ppc/spapr_pci.c | 119 |
1 files changed, 55 insertions, 64 deletions
diff --git a/hw/ppc/spapr_pci.c b/hw/ppc/spapr_pci.c index e8173d3246..8e10fc6857 100644 --- a/hw/ppc/spapr_pci.c +++ b/hw/ppc/spapr_pci.c @@ -1219,57 +1219,75 @@ static const char *dt_name_from_class(uint8_t class, uint8_t subclass, static uint32_t spapr_phb_get_pci_drc_index(SpaprPhbState *phb, PCIDevice *pdev); -static void spapr_populate_pci_child_dt(PCIDevice *dev, void *fdt, int offset, - SpaprPhbState *sphb) +/* create OF node for pci device and required OF DT properties */ +static int spapr_dt_pci_device(SpaprPhbState *sphb, PCIDevice *dev, + void *fdt, int parent_offset) { + int offset; + const gchar *basename; + gchar *nodename; + int slot = PCI_SLOT(dev->devfn); + int func = PCI_FUNC(dev->devfn); ResourceProps rp; - bool is_bridge = false; - int pci_status; - char *buf = NULL; uint32_t drc_index = spapr_phb_get_pci_drc_index(sphb, dev); + uint32_t header_type = pci_default_read_config(dev, PCI_HEADER_TYPE, 1); + bool is_bridge = (header_type == PCI_HEADER_TYPE_BRIDGE); + uint32_t vendor_id = pci_default_read_config(dev, PCI_VENDOR_ID, 2); + uint32_t device_id = pci_default_read_config(dev, PCI_DEVICE_ID, 2); + uint32_t revision_id = pci_default_read_config(dev, PCI_REVISION_ID, 1); uint32_t ccode = pci_default_read_config(dev, PCI_CLASS_PROG, 3); - uint32_t max_msi, max_msix; + uint32_t irq_pin = pci_default_read_config(dev, PCI_INTERRUPT_PIN, 1); + uint32_t subsystem_id = pci_default_read_config(dev, PCI_SUBSYSTEM_ID, 2); + uint32_t subsystem_vendor_id = + pci_default_read_config(dev, PCI_SUBSYSTEM_VENDOR_ID, 2); + uint32_t cache_line_size = + pci_default_read_config(dev, PCI_CACHE_LINE_SIZE, 1); + uint32_t pci_status = pci_default_read_config(dev, PCI_STATUS, 2); + gchar *loc_code; - if (pci_default_read_config(dev, PCI_HEADER_TYPE, 1) == - PCI_HEADER_TYPE_BRIDGE) { - is_bridge = true; + basename = dt_name_from_class((ccode >> 16) & 0xff, (ccode >> 8) & 0xff, + ccode & 0xff); + + if (func != 0) { + nodename = g_strdup_printf("%s@%x,%x", basename, slot, func); + } else { + nodename = g_strdup_printf("%s@%x", basename, slot); } + _FDT(offset = fdt_add_subnode(fdt, parent_offset, nodename)); + + g_free(nodename); + /* in accordance with PAPR+ v2.7 13.6.3, Table 181 */ - _FDT(fdt_setprop_cell(fdt, offset, "vendor-id", - pci_default_read_config(dev, PCI_VENDOR_ID, 2))); - _FDT(fdt_setprop_cell(fdt, offset, "device-id", - pci_default_read_config(dev, PCI_DEVICE_ID, 2))); - _FDT(fdt_setprop_cell(fdt, offset, "revision-id", - pci_default_read_config(dev, PCI_REVISION_ID, 1))); + _FDT(fdt_setprop_cell(fdt, offset, "vendor-id", vendor_id)); + _FDT(fdt_setprop_cell(fdt, offset, "device-id", device_id)); + _FDT(fdt_setprop_cell(fdt, offset, "revision-id", revision_id)); + _FDT(fdt_setprop_cell(fdt, offset, "class-code", ccode)); - if (pci_default_read_config(dev, PCI_INTERRUPT_PIN, 1)) { - _FDT(fdt_setprop_cell(fdt, offset, "interrupts", - pci_default_read_config(dev, PCI_INTERRUPT_PIN, 1))); + if (irq_pin) { + _FDT(fdt_setprop_cell(fdt, offset, "interrupts", irq_pin)); } if (!is_bridge) { - _FDT(fdt_setprop_cell(fdt, offset, "min-grant", - pci_default_read_config(dev, PCI_MIN_GNT, 1))); - _FDT(fdt_setprop_cell(fdt, offset, "max-latency", - pci_default_read_config(dev, PCI_MAX_LAT, 1))); + uint32_t min_grant = pci_default_read_config(dev, PCI_MIN_GNT, 1); + uint32_t max_latency = pci_default_read_config(dev, PCI_MAX_LAT, 1); + _FDT(fdt_setprop_cell(fdt, offset, "min-grant", min_grant)); + _FDT(fdt_setprop_cell(fdt, offset, "max-latency", max_latency)); } - if (pci_default_read_config(dev, PCI_SUBSYSTEM_ID, 2)) { - _FDT(fdt_setprop_cell(fdt, offset, "subsystem-id", - pci_default_read_config(dev, PCI_SUBSYSTEM_ID, 2))); + if (subsystem_id) { + _FDT(fdt_setprop_cell(fdt, offset, "subsystem-id", subsystem_id)); } - if (pci_default_read_config(dev, PCI_SUBSYSTEM_VENDOR_ID, 2)) { + if (subsystem_vendor_id) { _FDT(fdt_setprop_cell(fdt, offset, "subsystem-vendor-id", - pci_default_read_config(dev, PCI_SUBSYSTEM_VENDOR_ID, 2))); + subsystem_vendor_id)); } - _FDT(fdt_setprop_cell(fdt, offset, "cache-line-size", - pci_default_read_config(dev, PCI_CACHE_LINE_SIZE, 1))); + _FDT(fdt_setprop_cell(fdt, offset, "cache-line-size", cache_line_size)); + /* the following fdt cells are masked off the pci status register */ - pci_status = pci_default_read_config(dev, PCI_STATUS, 2); _FDT(fdt_setprop_cell(fdt, offset, "devsel-speed", PCI_STATUS_DEVSEL_MASK & pci_status)); @@ -1283,9 +1301,9 @@ static void spapr_populate_pci_child_dt(PCIDevice *dev, void *fdt, int offset, _FDT(fdt_setprop(fdt, offset, "udf-supported", NULL, 0)); } - buf = spapr_phb_get_loc_code(sphb, dev); - _FDT(fdt_setprop_string(fdt, offset, "ibm,loc-code", buf)); - g_free(buf); + loc_code = spapr_phb_get_loc_code(sphb, dev); + _FDT(fdt_setprop_string(fdt, offset, "ibm,loc-code", loc_code)); + g_free(loc_code); if (drc_index) { _FDT(fdt_setprop_cell(fdt, offset, "ibm,my-drc-index", drc_index)); @@ -1297,13 +1315,13 @@ static void spapr_populate_pci_child_dt(PCIDevice *dev, void *fdt, int offset, RESOURCE_CELLS_SIZE)); if (msi_present(dev)) { - max_msi = msi_nr_vectors_allocated(dev); + uint32_t max_msi = msi_nr_vectors_allocated(dev); if (max_msi) { _FDT(fdt_setprop_cell(fdt, offset, "ibm,req#msi", max_msi)); } } if (msix_present(dev)) { - max_msix = dev->msix_entries_nr; + uint32_t max_msix = dev->msix_entries_nr; if (max_msix) { _FDT(fdt_setprop_cell(fdt, offset, "ibm,req#msi-x", max_msix)); } @@ -1319,33 +1337,6 @@ static void spapr_populate_pci_child_dt(PCIDevice *dev, void *fdt, int offset, } spapr_phb_nvgpu_populate_pcidev_dt(dev, fdt, offset, sphb); -} - -/* create OF node for pci device and required OF DT properties */ -static int spapr_create_pci_child_dt(SpaprPhbState *phb, PCIDevice *dev, - void *fdt, int node_offset) -{ - int offset; - const gchar *basename; - gchar *nodename; - int slot = PCI_SLOT(dev->devfn); - int func = PCI_FUNC(dev->devfn); - uint32_t ccode = pci_default_read_config(dev, PCI_CLASS_PROG, 3); - - basename = dt_name_from_class((ccode >> 16) & 0xff, (ccode >> 8) & 0xff, - ccode & 0xff); - - if (func != 0) { - nodename = g_strdup_printf("%s@%x,%x", basename, slot, func); - } else { - nodename = g_strdup_printf("%s@%x", basename, slot); - } - - _FDT(offset = fdt_add_subnode(fdt, node_offset, nodename)); - - g_free(nodename); - - spapr_populate_pci_child_dt(dev, fdt, offset, phb); return offset; } @@ -1393,7 +1384,7 @@ int spapr_pci_dt_populate(SpaprDrc *drc, SpaprMachineState *spapr, SpaprPhbState *sphb = SPAPR_PCI_HOST_BRIDGE(plug_handler); PCIDevice *pdev = PCI_DEVICE(drc->dev); - *fdt_start_offset = spapr_create_pci_child_dt(sphb, pdev, fdt, 0); + *fdt_start_offset = spapr_dt_pci_device(sphb, pdev, fdt, 0); return 0; } @@ -2080,7 +2071,7 @@ static void spapr_populate_pci_devices_dt(PCIBus *bus, PCIDevice *pdev, int offset; SpaprFdt s_fdt; - offset = spapr_create_pci_child_dt(p->sphb, pdev, p->fdt, p->node_off); + offset = spapr_dt_pci_device(p->sphb, pdev, p->fdt, p->node_off); if (!offset) { error_report("Failed to create pci child device tree node"); return; |