Used in later patch to remove code duplication and improve
NvPciProbe() and NvPlatformProbe()
Copied verbatim from xf86-video-radeon
Signed-off-by: Emil Velikov <emil.l.veli...@gmail.com>
---
src/nv_driver.c | 68 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 68 insertions(+)
diff --git a/src/nv_driver.c b/src/nv_driver.c
index 9b5b9d6..eff0d47 100644
--- a/src/nv_driver.c
+++ b/src/nv_driver.c
@@ -252,6 +252,74 @@ NVDriverFunc(ScrnInfoPtr scrn, xorgDriverFuncOp op, void
*data)
}
static Bool
+nouveau_kernel_mode_enabled(ScrnInfoPtr pScrn, struct pci_device *pci_dev)
+{
+ struct nouveau_device *dev = NULL;
+ drmVersion *version;
+ char *busid;
+ int chipset, ret;
+
+ if (!xf86LoaderCheckSymbol("DRICreatePCIBusID")) {
+ xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
+ "[drm] No DRICreatePCIBusID symbol\n");
+ return FALSE;
+ }
+
+ busid = DRICreatePCIBusID(pci_dev);
+ ret = drmCheckModesettingSupported(busid);
+ if (ret) {
+ xf86DrvMsg(pScrn->scrnIndex, X_ERROR, "[drm] KMS not
enabled\n");
+ free(busid);
+ return FALSE;
+ }
+
+ ret = nouveau_device_open(busid, &dev);
+ if (ret) {
+ xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
+ "[drm] failed to open device\n");
+ free(busid);
+ return FALSE;
+ }
+ /* Check the version reported by the kernel module. In theory we
+ * shouldn't have to do this, as libdrm_nouveau will do its own checks.
+ * But, we're currently using the kernel patchlevel to also version
+ * the DRI interface.
+ */
+ version = drmGetVersion(dev->fd);
+ xf86DrvMsg(pScrn->scrnIndex, X_INFO,
+ "[drm] nouveau interface version: %d.%d.%d\n",
+ version->version_major, version->version_minor,
+ version->version_patchlevel);
+ drmFree(version);
+
+ chipset = dev->chipset;
+ nouveau_device_del(&dev);
+ free(busid);
+
+ switch (chipset & 0xf0) {
+ case 0x00:
+ case 0x10:
+ case 0x20:
+ case 0x30:
+ case 0x40:
+ case 0x60:
+ case 0x50:
+ case 0x80:
+ case 0x90:
+ case 0xa0:
+ case 0xc0:
+ case 0xd0:
+ case 0xe0:
+ break;
+ default:
+ xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
+ "Unknown chipset: NV%02x\n", chipset);
+ return FALSE;
+ }
+
+ return TRUE;
+}
+static Bool
NVPciProbe(DriverPtr drv, int entity_num, struct pci_device *pci_dev,
intptr_t match_data)
{
--
1.8.0
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