[Qemu-devel] [PATCH v3 7/9] pci: Remove capability specific handlers

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

Drivers can break these out on their own if they need to.

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

 hw/device-assignment.c |   16 ++++++++-----
 hw/pci.c               |   61 ++----------------------------------------------
 hw/pci.h               |   19 ---------------
 3 files changed, 13 insertions(+), 83 deletions(-)

diff --git a/hw/device-assignment.c b/hw/device-assignment.c
index 6314773..970ffa1 100644
--- a/hw/device-assignment.c
+++ b/hw/device-assignment.c
@@ -63,6 +63,10 @@ static void assigned_dev_load_option_rom(AssignedDevice *dev);
 
 static void assigned_dev_unregister_msix_mmio(AssignedDevice *dev);
 
+static void assigned_device_pci_cap_write_config(PCIDevice *pci_dev,
+                                                 uint32_t address,
+                                                 uint32_t val, int len);
+
 static uint32_t assigned_dev_ioport_rw(AssignedDevRegion *dev_region,
                                        uint32_t addr, int len, uint32_t *val)
 {
@@ -406,14 +410,17 @@ static void assigned_dev_pci_write_config(PCIDevice *d, uint32_t address,
           ((d->devfn >> 3) & 0x1F), (d->devfn & 0x7),
           (uint16_t) address, val, len);
 
+    if (address > PCI_CONFIG_HEADER_SIZE && d->config_map[address]) {
+        return assigned_device_pci_cap_write_config(d, address, val, len);
+    }
+
     if (address == 0x4) {
         pci_default_write_config(d, address, val, len);
         /* Continue to program the card */
     }
 
     if ((address >= 0x10 && address <= 0x24) || address == 0x30 ||
-        address == 0x34 || address == 0x3c || address == 0x3d ||
-        (address > PCI_CONFIG_HEADER_SIZE && d->config_map[address])) {
+        address == 0x34 || address == 0x3c || address == 0x3d) {
         /* used for update-mappings (BAR emulation) */
         pci_default_write_config(d, address, val, len);
         return;
@@ -1249,7 +1256,7 @@ static void assigned_device_pci_cap_write_config(PCIDevice *pci_dev, uint32_t ad
 {
     AssignedDevice *assigned_dev = container_of(pci_dev, AssignedDevice, dev);
 
-    pci_default_cap_write_config(pci_dev, address, val, len);
+    pci_default_write_config(pci_dev, address, val, len);
 #ifdef KVM_CAP_IRQ_ROUTING
 #ifdef KVM_CAP_DEVICE_MSI
     if (assigned_dev->cap.available & ASSIGNED_DEVICE_CAP_MSI) {
@@ -1478,9 +1485,6 @@ static int assigned_initfn(struct PCIDevice *pci_dev)
     dev->h_busnr = dev->host.bus;
     dev->h_devfn = PCI_DEVFN(dev->host.dev, dev->host.func);
 
-    pci_register_capability_handlers(pci_dev, NULL,
-                                     assigned_device_pci_cap_write_config);
-
     if (assigned_device_pci_cap_init(pci_dev) < 0)
         goto out;
 
diff --git a/hw/pci.c b/hw/pci.c
index 1cf62b6..e529793 100644
--- a/hw/pci.c
+++ b/hw/pci.c
@@ -772,8 +772,6 @@ static PCIDevice *do_pci_register_device(PCIDevice *pci_dev, PCIBus *bus,
         config_write = pci_default_write_config;
     pci_dev->config_read = config_read;
     pci_dev->config_write = config_write;
-    pci_dev->cap.config_read = pci_default_cap_read_config;
-    pci_dev->cap.config_write = pci_default_cap_write_config;
     bus->devices[devfn] = pci_dev;
     pci_dev->irq = qemu_allocate_irqs(pci_set_irq, pci_dev, PCI_NUM_PINS);
     pci_dev->version_id = 2; /* Current pci device vmstate version */
@@ -1070,57 +1068,21 @@ static void pci_update_irq_disabled(PCIDevice *d, int was_irq_disabled)
     }
 }
 
-static uint32_t pci_read_config(PCIDevice *d,
-                                uint32_t address, int len)
+uint32_t pci_default_read_config(PCIDevice *d,
+                                 uint32_t address, int len)
 {
     uint32_t val = 0;
-
+    assert(len == 1 || len == 2 || len == 4);
     len = MIN(len, pci_config_size(d) - address);
     memcpy(&val, d->config + address, len);
     return le32_to_cpu(val);
 }
 
-uint32_t pci_default_read_config(PCIDevice *d,
-                                 uint32_t address, int len)
-{
-    assert(len == 1 || len == 2 || len == 4);
-
-    if (address > PCI_CONFIG_HEADER_SIZE && d->config_map[address]) {
-        return d->cap.config_read(d, address, len);
-    }
-
-    return pci_read_config(d, address, len);
-}
-
-uint32_t pci_default_cap_read_config(PCIDevice *pci_dev,
-                                     uint32_t address, int len)
-{
-    return pci_read_config(pci_dev, address, len);
-}
-
-void pci_default_cap_write_config(PCIDevice *pci_dev,
-                                  uint32_t address, uint32_t val, int len)
-{
-    uint32_t config_size = pci_config_size(pci_dev);
-    int i;
-
-    for (i = 0; i < len && address + i < config_size; val >>= 8, ++i) {
-        uint8_t wmask = pci_dev->wmask[address + i];
-        pci_dev->config[address + i] =
-            (pci_dev->config[address + i] & ~wmask) | (val & wmask);
-    }
-}
-
 void pci_default_write_config(PCIDevice *d, uint32_t addr, uint32_t val, int l)
 {
     int i, was_irq_disabled = pci_irq_disabled(d);
     uint32_t config_size = pci_config_size(d);
 
-    if (addr > PCI_CONFIG_HEADER_SIZE && d->config_map[addr]) {
-        d->cap.config_write(d, addr, val, l);
-        return;
-    }
-
     for (i = 0; i < l && addr + i < config_size; val >>= 8, ++i) {
         uint8_t wmask = d->wmask[addr + i];
         uint8_t w1cmask = d->w1cmask[addr + i];
@@ -1750,23 +1712,6 @@ PCIDevice *pci_create_simple_multifunction(PCIBus *bus, int devfn,
     return dev;
 }
 
-void pci_register_capability_handlers(PCIDevice *pdev,
-                                      PCICapConfigReadFunc *config_read,
-                                      PCICapConfigWriteFunc *config_write)
-{
-    if (config_read) {
-        pdev->cap.config_read = config_read;
-    } else {
-        pdev->cap.config_read = pci_default_cap_read_config;
-    }
-
-    if (config_write) {
-        pdev->cap.config_write = config_write;
-    } else {
-        pdev->cap.config_write = pci_default_cap_write_config;
-    }
-}
-
 PCIDevice *pci_create(PCIBus *bus, int devfn, const char *name)
 {
     return pci_create_multifunction(bus, devfn, false, name);
diff --git a/hw/pci.h b/hw/pci.h
index 146f81d..1fe6e49 100644
--- a/hw/pci.h
+++ b/hw/pci.h
@@ -85,11 +85,6 @@ typedef void PCIMapIORegionFunc(PCIDevice *pci_dev, int region_num,
                                 pcibus_t addr, pcibus_t size, int type);
 typedef int PCIUnregisterFunc(PCIDevice *pci_dev);
 
-typedef void PCICapConfigWriteFunc(PCIDevice *pci_dev,
-                                   uint32_t address, uint32_t val, int len);
-typedef uint32_t PCICapConfigReadFunc(PCIDevice *pci_dev,
-                                      uint32_t address, int len);
-
 typedef struct PCIIORegion {
     pcibus_t addr; /* current PCI mapping address. -1 means not mapped */
 #define PCI_BAR_UNMAPPED (~(pcibus_t)0)
@@ -217,12 +212,6 @@ struct PCIDevice {
     struct kvm_msix_message *msix_irq_entries;
 
     msix_mask_notifier_func msix_mask_notifier;
-
-    /* Device capability configuration space */
-    struct {
-        PCICapConfigReadFunc *config_read;
-        PCICapConfigWriteFunc *config_write;
-    } cap;
 };
 
 PCIDevice *pci_register_device(PCIBus *bus, const char *name,
@@ -237,10 +226,6 @@ void pci_register_bar(PCIDevice *pci_dev, int region_num,
 void pci_map_option_rom(PCIDevice *pdev, int region_num, pcibus_t addr,
                         pcibus_t size, int type);
 
-void pci_register_capability_handlers(PCIDevice *pci_dev,
-                                      PCICapConfigReadFunc *config_read,
-                                      PCICapConfigWriteFunc *config_write);
-
 int pci_map_irq(PCIDevice *pci_dev, int pin);
 
 int pci_add_capability(PCIDevice *pdev, uint8_t cap_id,
@@ -256,10 +241,6 @@ void pci_default_write_config(PCIDevice *d,
                               uint32_t address, uint32_t val, int len);
 void pci_device_save(PCIDevice *s, QEMUFile *f);
 int pci_device_load(PCIDevice *s, QEMUFile *f);
-uint32_t pci_default_cap_read_config(PCIDevice *pci_dev,
-                                     uint32_t address, int len);
-void pci_default_cap_write_config(PCIDevice *pci_dev,
-                                  uint32_t address, uint32_t val, int len);
 typedef void (*pci_set_irq_fn)(void *opaque, int irq_num, int level);
 typedef int (*pci_map_irq_fn)(PCIDevice *pci_dev, int irq_num);
 typedef int (*pci_hotplug_fn)(DeviceState *qdev, PCIDevice *pci_dev, int state);