| pci-quirks.c (e692f9c6a681de1372a41999b14a947a553b6a1a) | pci-quirks.c (d3c6a18bc7affd3b89903d98d8a3125a3e1c9861) |
|---|---|
| 1/* 2 * device quirks for PCI devices 3 * 4 * Copyright Red Hat, Inc. 2012-2015 5 * 6 * Authors: 7 * Alex Williamson <alex.williamson@redhat.com> 8 * --- 1155 unchanged lines hidden (view full) --- 1164/* 1165 * The OpRegion includes the Video BIOS Table, which seems important for 1166 * telling the driver what sort of outputs it has. Without this, the device 1167 * may work in the guest, but we may not get output. This also requires BIOS 1168 * support to reserve and populate a section of guest memory sufficient for 1169 * the table and to write the base address of that memory to the ASLS register 1170 * of the IGD device. 1171 */ | 1/* 2 * device quirks for PCI devices 3 * 4 * Copyright Red Hat, Inc. 2012-2015 5 * 6 * Authors: 7 * Alex Williamson <alex.williamson@redhat.com> 8 * --- 1155 unchanged lines hidden (view full) --- 1164/* 1165 * The OpRegion includes the Video BIOS Table, which seems important for 1166 * telling the driver what sort of outputs it has. Without this, the device 1167 * may work in the guest, but we may not get output. This also requires BIOS 1168 * support to reserve and populate a section of guest memory sufficient for 1169 * the table and to write the base address of that memory to the ASLS register 1170 * of the IGD device. 1171 */ |
| 1172int vfio_pci_igd_opregion_init(VFIOPCIDevice *vdev, 1173 struct vfio_region_info *info, Error **errp) | 1172bool vfio_pci_igd_opregion_init(VFIOPCIDevice *vdev, 1173 struct vfio_region_info *info, Error **errp) |
| 1174{ 1175 int ret; 1176 1177 vdev->igd_opregion = g_malloc0(info->size); 1178 ret = pread(vdev->vbasedev.fd, vdev->igd_opregion, 1179 info->size, info->offset); 1180 if (ret != info->size) { 1181 error_setg(errp, "failed to read IGD OpRegion"); 1182 g_free(vdev->igd_opregion); 1183 vdev->igd_opregion = NULL; | 1174{ 1175 int ret; 1176 1177 vdev->igd_opregion = g_malloc0(info->size); 1178 ret = pread(vdev->vbasedev.fd, vdev->igd_opregion, 1179 info->size, info->offset); 1180 if (ret != info->size) { 1181 error_setg(errp, "failed to read IGD OpRegion"); 1182 g_free(vdev->igd_opregion); 1183 vdev->igd_opregion = NULL; |
| 1184 return -EINVAL; | 1184 return false; |
| 1185 } 1186 1187 /* 1188 * Provide fw_cfg with a copy of the OpRegion which the VM firmware is to 1189 * allocate 32bit reserved memory for, copy these contents into, and write 1190 * the reserved memory base address to the device ASLS register at 0xFC. 1191 * Alignment of this reserved region seems flexible, but using a 4k page 1192 * alignment seems to work well. This interface assumes a single IGD --- 8 unchanged lines hidden (view full) --- 1201 vdev->igd_opregion, info->size); 1202 1203 trace_vfio_pci_igd_opregion_enabled(vdev->vbasedev.name); 1204 1205 pci_set_long(vdev->pdev.config + IGD_ASLS, 0); 1206 pci_set_long(vdev->pdev.wmask + IGD_ASLS, ~0); 1207 pci_set_long(vdev->emulated_config_bits + IGD_ASLS, ~0); 1208 | 1185 } 1186 1187 /* 1188 * Provide fw_cfg with a copy of the OpRegion which the VM firmware is to 1189 * allocate 32bit reserved memory for, copy these contents into, and write 1190 * the reserved memory base address to the device ASLS register at 0xFC. 1191 * Alignment of this reserved region seems flexible, but using a 4k page 1192 * alignment seems to work well. This interface assumes a single IGD --- 8 unchanged lines hidden (view full) --- 1201 vdev->igd_opregion, info->size); 1202 1203 trace_vfio_pci_igd_opregion_enabled(vdev->vbasedev.name); 1204 1205 pci_set_long(vdev->pdev.config + IGD_ASLS, 0); 1206 pci_set_long(vdev->pdev.wmask + IGD_ASLS, ~0); 1207 pci_set_long(vdev->emulated_config_bits + IGD_ASLS, ~0); 1208 |
| 1209 return 0; | 1209 return true; |
| 1210} 1211 1212/* 1213 * Common quirk probe entry points. 1214 */ 1215void vfio_vga_quirk_setup(VFIOPCIDevice *vdev) 1216{ 1217 vfio_vga_probe_ati_3c3_quirk(vdev); --- 468 unchanged lines hidden --- | 1210} 1211 1212/* 1213 * Common quirk probe entry points. 1214 */ 1215void vfio_vga_quirk_setup(VFIOPCIDevice *vdev) 1216{ 1217 vfio_vga_probe_ati_3c3_quirk(vdev); --- 468 unchanged lines hidden --- |