[Qemu-devel] [PATCH v3 5/9] pci: Remove cap.length, cap.start, cap.supported

[Alex Williamson <alex.williamson@redhat.com>]

Capabilities aren't required to be contiguous, so cap.length never
really made much sense.  Likewise, cap.start is mostly meaningless
too.  Both of these are better served by the capability map.  We
can also get rid of cap.supported, since it's really now unused
and redundant with flag in the status word anyway.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
---

 hw/device-assignment.c |    4 ----
 hw/pci.c               |    3 ---
 hw/pci.h               |    2 --
 3 files changed, 0 insertions(+), 9 deletions(-)

diff --git a/hw/device-assignment.c b/hw/device-assignment.c
index a4fad60..975d3cb 100644
--- a/hw/device-assignment.c
+++ b/hw/device-assignment.c
@@ -1292,8 +1292,6 @@ static int assigned_device_pci_cap_init(PCIDevice *pci_dev)
                  pci_get_word(pci_dev->config + PCI_STATUS) &
                  ~PCI_STATUS_CAP_LIST);
 
-    pci_dev->cap.length = 0;
-
 #ifdef KVM_CAP_IRQ_ROUTING
 #ifdef KVM_CAP_DEVICE_MSI
     /* Expose MSI capability
@@ -1320,7 +1318,6 @@ static int assigned_device_pci_cap_init(PCIDevice *pci_dev)
                      PCI_MSI_FLAGS_QSIZE | PCI_MSI_FLAGS_ENABLE);
         pci_set_long(pci_dev->wmask + vpos + PCI_MSI_ADDRESS_LO, 0xfffffffc);
         pci_set_long(pci_dev->wmask + vpos + PCI_MSI_DATA_32, 0xffff);
-        pci_dev->cap.length += PCI_CAPABILITY_CONFIG_MSI_LENGTH;
     }
 #endif
 #ifdef KVM_CAP_DEVICE_MSIX
@@ -1356,7 +1353,6 @@ static int assigned_device_pci_cap_init(PCIDevice *pci_dev)
         bar_nr = msix_table_entry & PCI_MSIX_BIR;
         msix_table_entry &= ~PCI_MSIX_BIR;
         dev->msix_table_addr = pci_region[bar_nr].base_addr + msix_table_entry;
-        pci_dev->cap.length += PCI_CAPABILITY_CONFIG_MSIX_LENGTH;
     }
 #endif
 #endif
diff --git a/hw/pci.c b/hw/pci.c
index cbe6fb7..1cf62b6 100644
--- a/hw/pci.c
+++ b/hw/pci.c
@@ -1909,8 +1909,6 @@ int pci_add_capability(PCIDevice *pdev, uint8_t cap_id,
     memset(pdev->cmask + offset, 0xFF, size);
 
     pdev->config[PCI_STATUS] |= PCI_STATUS_CAP_LIST;
-    pdev->cap.supported = 1;
-    pdev->cap.start = pdev->cap.start ? MIN(pdev->cap.start, offset) : offset;
 
     return offset;
 }
@@ -1931,7 +1929,6 @@ void pci_del_capability(PCIDevice *pdev, uint8_t cap_id, uint8_t size)
 
     if (!pdev->config[PCI_CAPABILITY_LIST]) {
         pdev->config[PCI_STATUS] &= ~PCI_STATUS_CAP_LIST;
-        pdev->cap.start = pdev->cap.length = 0;
     }
 }
 
diff --git a/hw/pci.h b/hw/pci.h
index bd15b43..146f81d 100644
--- a/hw/pci.h
+++ b/hw/pci.h
@@ -220,8 +220,6 @@ struct PCIDevice {
 
     /* Device capability configuration space */
     struct {
-        int supported;
-        unsigned int start, length;
         PCICapConfigReadFunc *config_read;
         PCICapConfigWriteFunc *config_write;
     } cap;