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[Qemu-devel] [PATCH V6 18/32] pci: remove bus_num member from struct PCI
From: |
Isaku Yamahata |
Subject: |
[Qemu-devel] [PATCH V6 18/32] pci: remove bus_num member from struct PCIBus. |
Date: |
Fri, 30 Oct 2009 21:21:12 +0900 |
Since It can be retrieved from pci configuration space,
the member is unnecessary.
Signed-off-by: Isaku Yamahata <address@hidden>
---
hw/pci.c | 21 ++++++++++-----------
1 files changed, 10 insertions(+), 11 deletions(-)
diff --git a/hw/pci.c b/hw/pci.c
index 7da3db9..a75d981 100644
--- a/hw/pci.c
+++ b/hw/pci.c
@@ -36,7 +36,6 @@
struct PCIBus {
BusState qbus;
- int bus_num;
int devfn_min;
pci_set_irq_fn set_irq;
pci_map_irq_fn map_irq;
@@ -192,7 +191,9 @@ static void pci_register_secondary_bus(PCIBus *bus,
int pci_bus_num(PCIBus *s)
{
- return s->bus_num;
+ if (!s->parent_dev)
+ return 0; /* pci host bridge */
+ return s->parent_dev->config[PCI_SECONDARY_BUS];
}
static int get_pci_config_device(QEMUFile *f, void *pv, size_t size)
@@ -624,7 +625,7 @@ void pci_data_write(void *opaque, uint32_t addr, uint32_t
val, int len)
addr, val, len);
#endif
bus_num = (addr >> 16) & 0xff;
- while (s && s->bus_num != bus_num)
+ while (s && pci_bus_num(s) != bus_num)
s = s->next;
if (!s)
return;
@@ -645,7 +646,7 @@ uint32_t pci_data_read(void *opaque, uint32_t addr, int len)
uint32_t val;
bus_num = (addr >> 16) & 0xff;
- while (s && s->bus_num != bus_num)
+ while (s && pci_bus_num(s) != bus_num)
s= s->next;
if (!s)
goto fail;
@@ -760,7 +761,8 @@ static void pci_info_device(PCIDevice *d)
const pci_class_desc *desc;
monitor_printf(mon, " Bus %2d, device %3d, function %d:\n",
- d->bus->bus_num, PCI_SLOT(d->devfn), PCI_FUNC(d->devfn));
+ pci_bus_num(d->bus),
+ PCI_SLOT(d->devfn), PCI_FUNC(d->devfn));
class = pci_get_word(d->config + PCI_CLASS_DEVICE);
monitor_printf(mon, " ");
desc = pci_class_descriptions;
@@ -816,7 +818,7 @@ void pci_for_each_device(int bus_num, void (*fn)(PCIDevice
*d))
PCIDevice *d;
int devfn;
- while (bus && bus->bus_num != bus_num)
+ while (bus && pci_bus_num(bus) != bus_num)
bus = bus->next;
if (bus) {
for(devfn = 0; devfn < 256; devfn++) {
@@ -913,17 +915,14 @@ typedef struct {
static void pci_bridge_write_config(PCIDevice *d,
uint32_t address, uint32_t val, int len)
{
- PCIBridge *s = (PCIBridge *)d;
-
pci_default_write_config(d, address, val, len);
- s->bus.bus_num = d->config[PCI_SECONDARY_BUS];
}
PCIBus *pci_find_bus(int bus_num)
{
PCIBus *bus = first_bus;
- while (bus && bus->bus_num != bus_num)
+ while (bus && pci_bus_num(bus) != bus_num)
bus = bus->next;
return bus;
@@ -1149,7 +1148,7 @@ static void pcibus_dev_print(Monitor *mon, DeviceState
*dev, int indent)
monitor_printf(mon, "%*sclass %s, addr %02x:%02x.%x, "
"pci id %04x:%04x (sub %04x:%04x)\n",
indent, "", ctxt,
- d->bus->bus_num, PCI_SLOT(d->devfn), PCI_FUNC(d->devfn),
+ pci_bus_num(d->bus), PCI_SLOT(d->devfn), PCI_FUNC(d->devfn),
pci_get_word(d->config + PCI_VENDOR_ID),
pci_get_word(d->config + PCI_DEVICE_ID),
pci_get_word(d->config + PCI_SUBSYSTEM_VENDOR_ID),
--
1.6.0.2
- [Qemu-devel] [PATCH V6 10/32] pci: clean up of pci_default_read_config., (continued)
- [Qemu-devel] [PATCH V6 10/32] pci: clean up of pci_default_read_config., Isaku Yamahata, 2009/10/30
- [Qemu-devel] [PATCH V6 06/32] pci: use helper functions to access pci config space., Isaku Yamahata, 2009/10/30
- [Qemu-devel] [PATCH V6 05/32] pci: helper functions to access PCIDevice::config, Isaku Yamahata, 2009/10/30
- [Qemu-devel] [PATCH V6 11/32] pci: make pci_bar() aware of header type 1., Isaku Yamahata, 2009/10/30
- [Qemu-devel] [PATCH V6 17/32] pci: 64bit bar support., Isaku Yamahata, 2009/10/30
- [Qemu-devel] [PATCH V6 16/32] pci: typedef pcibus_t as uint64_t instead of uint32_t., Isaku Yamahata, 2009/10/30
- [Qemu-devel] [PATCH V6 02/32] pci: introduce constant PCI_NUM_PINS for the number of interrupt pins, 4., Isaku Yamahata, 2009/10/30
- [Qemu-devel] [PATCH V6 14/32] pci: introduce pcibus_t to represent pci bus address/size instead of uint32_t, Isaku Yamahata, 2009/10/30
- [Qemu-devel] [PATCH V6 15/32] pci: introduce FMT_PCIBUS for printf format for pcibus_t., Isaku Yamahata, 2009/10/30
- [Qemu-devel] [PATCH V6 01/32] pci: fix PCI_DPRINTF() wrt variadic macro., Isaku Yamahata, 2009/10/30
- [Qemu-devel] [PATCH V6 18/32] pci: remove bus_num member from struct PCIBus.,
Isaku Yamahata <=
- [Qemu-devel] [PATCH V6 21/32] pci: move pci host stuff from pci.c to pci_host.c, Isaku Yamahata, 2009/10/30
- [Qemu-devel] [PATCH V6 27/32] pci: teach pci_default_config_write() ROM bar for normal/bridge device ., Isaku Yamahata, 2009/10/30
- [Qemu-devel] [PATCH V6 26/32] pci: use range helper functions., Isaku Yamahata, 2009/10/30
- [Qemu-devel] [PATCH V6 03/32] pci: use PCI_SLOT() and PCI_FUNC()., Isaku Yamahata, 2009/10/30
- [Qemu-devel] [PATCH V6 09/32] pci: s/PCI_ADDRESS_SPACE_/PCI_BASE_ADDRESS_SPACE_/ to match pci_regs.h, Isaku Yamahata, 2009/10/30
- [Qemu-devel] [PATCH V6 12/32] pci_host.h: move functions in pci_host.h into .c file., Isaku Yamahata, 2009/10/30
- [Qemu-devel] [PATCH V6 04/32] pci: define a constant to represent a unmapped bar and use it., Isaku Yamahata, 2009/10/30
- [Qemu-devel] [PATCH V6 29/32] pci: cosmetic on pci_upadte_mappings(), Isaku Yamahata, 2009/10/30
- [Qemu-devel] [PATCH V6 22/32] pci_host: change the signature of pci_data_{read, write}., Isaku Yamahata, 2009/10/30
- [Qemu-devel] [PATCH V6 13/32] pci_host: consolidate pci config address access., Isaku Yamahata, 2009/10/30