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pci_ivshmem: return back to polling mode when interrupt mode invalid

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Improve the pci ivshmem device compatibility, do not return error when
irq mode init failed, fallback to the polling mode as mush as possible.

Signed-off-by: Bowen Wang <wangbowen6@xiaomi.com>
This commit is contained in:
Bowen Wang
2024-10-21 16:58:03 +08:00
committed by Mateusz Szafoni
parent 707f0ce719
commit eede50f465
1 changed files with 11 additions and 9 deletions
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drivers/pci/pci_ivshmem.c
+11 -9
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@@ -255,23 +255,26 @@ static int ivshmem_probe(FAR struct pci_device_s *dev)
if (ivdev->vmid != 0 && ivdev->vmid != 1) if (ivdev->vmid != 0 && ivdev->vmid != 1)
{ {
ret = -EINVAL; pciwarn("Vmid=%"PRIu32" not 0/1, use polling mode\n", ivdev->vmid);
pcierr("Vmid must be 0 or 1\n"); ivdev->vmid = IVSHMEM_INVALID_VMID;
goto err_master; goto out;
} }
ret = pci_alloc_irq(dev, &ivdev->irq, 1); ret = pci_alloc_irq(dev, &ivdev->irq, 1);
if (ret != 1) if (ret != 1)
{ {
pcierr("Failed to allocate irq %d\n", ret); pciwarn("Failed to allocate irq %d, use polling mode\n", ret);
goto err_master; ivdev->vmid = IVSHMEM_INVALID_VMID;
goto out;
} }
ret = pci_connect_irq(dev, &ivdev->irq, 1); ret = pci_connect_irq(dev, &ivdev->irq, 1);
if (ret < 0) if (ret < 0)
{ {
pcierr("Failed to connect irq %d\n", ret); pciwarn("Failed to connect irq %d, use polling mode\n", ret);
goto err_msi_alloc; pci_release_irq(dev, &ivdev->irq, 1);
ivdev->vmid = IVSHMEM_INVALID_VMID;
goto out;
} }
pciinfo("vmid=%" PRIu32 " irq=%d\n", ivdev->vmid, ivdev->irq); pciinfo("vmid=%" PRIu32 " irq=%d\n", ivdev->vmid, ivdev->irq);
@@ -281,6 +284,7 @@ static int ivshmem_probe(FAR struct pci_device_s *dev)
ivdev->vmid = IVSHMEM_INVALID_VMID; ivdev->vmid = IVSHMEM_INVALID_VMID;
} }
out:
ret = ivshmem_register_device(ivdev); ret = ivshmem_register_device(ivdev);
if (ret < 0) if (ret < 0)
{ {
@@ -290,8 +294,6 @@ static int ivshmem_probe(FAR struct pci_device_s *dev)
g_ivshmem_next_id++; g_ivshmem_next_id++;
return ret; return ret;
err_msi_alloc:
pci_release_irq(dev, &ivdev->irq, 1);
err_master: err_master:
pci_clear_master(dev); pci_clear_master(dev);
pci_disable_device(dev); pci_disable_device(dev);