Пример #1
0
int qib_pcie_init(struct pci_dev *pdev, const struct pci_device_id *ent)
{
	int ret;

	ret = pci_enable_device(pdev);
	if (ret) {
		/*
                                     
                                                          
                                                              
                                         
    
                                                             
                                                              
                                                         
                                                              
                                                   
   */
		qib_early_err(&pdev->dev, "pci enable failed: error %d\n",
			      -ret);
		goto done;
	}

	ret = pci_request_regions(pdev, QIB_DRV_NAME);
	if (ret) {
		qib_devinfo(pdev, "pci_request_regions fails: err %d\n", -ret);
		goto bail;
	}

	ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
	if (ret) {
		/*
                                                         
                                                         
                      
   */
		ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
		if (ret) {
			qib_devinfo(pdev, "Unable to set DMA mask: %d\n", ret);
			goto bail;
		}
		ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
	} else
		ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
	if (ret) {
		qib_early_err(&pdev->dev,
			      "Unable to set DMA consistent mask: %d\n", ret);
		goto bail;
	}

	pci_set_master(pdev);
	ret = pci_enable_pcie_error_reporting(pdev);
	if (ret) {
		qib_early_err(&pdev->dev,
			      "Unable to enable pcie error reporting: %d\n",
			      ret);
		ret = 0;
	}
	goto done;

bail:
	pci_disable_device(pdev);
	pci_release_regions(pdev);
done:
	return ret;
}
Пример #2
0
/*
 * Do all the common PCIe setup and initialization.
 * devdata is not yet allocated, and is not allocated until after this
 * routine returns success.  Therefore qib_dev_err() can't be used for error
 * printing.
 */
int qib_pcie_init(struct pci_dev *pdev, const struct pci_device_id *ent)
{
	int ret;

	ret = pci_enable_device(pdev);
	if (ret) {
		/*
		 * This can happen (in theory) iff:
		 * We did a chip reset, and then failed to reprogram the
		 * BAR, or the chip reset due to an internal error.  We then
		 * unloaded the driver and reloaded it.
		 *
		 * Both reset cases set the BAR back to initial state.  For
		 * the latter case, the AER sticky error bit at offset 0x718
		 * should be set, but the Linux kernel doesn't yet know
		 * about that, it appears.  If the original BAR was retained
		 * in the kernel data structures, this may be OK.
		 */
		qib_early_err(&pdev->dev, "pci enable failed: error %d\n",
			      -ret);
		goto done;
	}

	ret = pci_request_regions(pdev, QIB_DRV_NAME);
	if (ret) {
		qib_devinfo(pdev, "pci_request_regions fails: err %d\n", -ret);
		goto bail;
	}

	ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
	if (ret) {
		/*
		 * If the 64 bit setup fails, try 32 bit.  Some systems
		 * do not setup 64 bit maps on systems with 2GB or less
		 * memory installed.
		 */
		ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
		if (ret) {
			qib_devinfo(pdev, "Unable to set DMA mask: %d\n", ret);
			goto bail;
		}
		ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
	} else
		ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
	if (ret) {
		qib_early_err(&pdev->dev,
			      "Unable to set DMA consistent mask: %d\n", ret);
		goto bail;
	}

	pci_set_master(pdev);
	ret = pci_enable_pcie_error_reporting(pdev);
	if (ret) {
		qib_early_err(&pdev->dev,
			      "Unable to enable pcie error reporting: %d\n",
			      ret);
		ret = 0;
	}
	goto done;

bail:
	pci_disable_device(pdev);
	pci_release_regions(pdev);
done:
	return ret;
}
Пример #3
0
/*
 * Do all the common PCIe setup and initialization.
 * devdata is not yet allocated, and is not allocated until after this
 * routine returns success.  Therefore qib_dev_err() can't be used for error
 * printing.
 */
int qib_pcie_init(struct pci_dev *pdev, const struct pci_device_id *ent)
{
	int ret;

	ret = pci_enable_device(pdev);
	if (ret) {
		/*
		 * This can happen (in theory) iff:
		 * We did a chip reset, and then failed to reprogram the
		 * BAR, or the chip reset due to an internal error.  We then
		 * unloaded the driver and reloaded it.
		 *
		 * Both reset cases set the BAR back to initial state.  For
		 * the latter case, the AER sticky error bit at offset 0x718
		 * should be set, but the Linux kernel doesn't yet know
		 * about that, it appears.  If the original BAR was retained
		 * in the kernel data structures, this may be OK.
		 */
		qib_early_err(&pdev->dev, "pci enable failed: error %d\n",
			      -ret);
		goto done;
	}

	ret = pci_request_regions(pdev, QIB_DRV_NAME);
	if (ret) {
		qib_devinfo(pdev, "pci_request_regions fails: err %d\n",
			 -ret);
		goto bail;
	}

	ret = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
	if (ret) {
		/*
		 * If the 64 bit setup fails, try 32 bit.  Some systems
		 * do not setup 64 bit maps on systems with 2GB or less
		 * memory installed.
		 */
		ret = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
		if (ret) {
			qib_devinfo(pdev, "Unable to set DMA mask: %d\n", ret);
			goto bail;
		}
		qib_dbg("No 64bit DMA mask, used 32 bit mask\n");
		ret = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
	} else
		ret = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
	if (ret) {
		qib_early_err(&pdev->dev,
			      "Unable to set DMA consistent mask: %d\n", ret);
		goto bail;
	}

	pci_set_master(pdev);
#ifdef CONFIG_PCIEAER
	/* enable basic AER reporting.  Perhaps more later */
	if (pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_ERR)) {
		ret = pci_enable_pcie_error_reporting(pdev);
		if (ret)
			qib_early_err(&pdev->dev,
				      "Unable to enable pcie error reporting"
				      ": %d\n", ret);
			ret = 0;
	} else
		qib_dbg("AER capability not found! AER reports not enabled\n");
#endif

	goto done;

bail:
	pci_disable_device(pdev);
	pci_release_regions(pdev);

done:
	return ret;
}