proxmox-mirrors/qemu
1
0
Fork 0
mirror of https://git.proxmox.com/git/qemu synced 2025-08-08 11:22:52 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

pci: simplify (pci_/pcie_mmcfg_)data_read()

Browse Source 
Remove switch on length: we don't care about
high bits for value, so just return all ones
if no device.  And add one assert().

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Isaku Yamahata <yamahata@valinux.co.jp>
This commit is contained in:
Michael S. Tsirkin 2009-11-12 14:58:31 +09:00
parent b6243d991a
commit 4677d8ed9d
2 changed files with 11 additions and 37 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
hw/pci_host.c
View File

@ -71,25 +71,15 @@ uint32_t pci_data_read(PCIBus *s, uint32_t addr, int len)
uint32_t config_addr = pci_addr_to_config(addr); uint32_t config_addr = pci_addr_to_config(addr);
uint32_t val; uint32_t val;
assert(len == 1 || len == 2 || len == 4);
if (!pci_dev) { if (!pci_dev) {
switch(len) { return ~0x0;
case 1:
val = 0xff;
break;
case 2:
val = 0xffff;
break;
default:
case 4:
val = 0xffffffff;
break;
}
} else {
val = pci_dev->config_read(pci_dev, config_addr, len);
PCI_DPRINTF("%s: %s: addr=%02"PRIx32" val=%08"PRIx32" len=%d\n",
__func__, pci_dev->name, config_addr, val, len);
} }
val = pci_dev->config_read(pci_dev, config_addr, len);
PCI_DPRINTF("%s: %s: addr=%02"PRIx32" val=%08"PRIx32" len=%d\n",
__func__, pci_dev->name, config_addr, val, len);
return val; return val;
} }

26
hw/pcie_host.c
View File

@ -65,31 +65,15 @@ static void pcie_mmcfg_data_write(PCIBus *s,
PCIE_MMCFG_CONFOFFSET(mmcfg_addr), val, len); PCIE_MMCFG_CONFOFFSET(mmcfg_addr), val, len);
} }
static uint32_t pcie_mmcfg_data_read(PCIBus *s, static uint32_t pcie_mmcfg_data_read(PCIBus *s, uint32_t addr, int len)
uint32_t mmcfg_addr, int len)
{ {
PCIDevice *pci_dev = pcie_mmcfg_addr_to_dev(s, mmcfg_addr); PCIDevice *pci_dev = pcie_mmcfg_addr_to_dev(s, addr);
uint32_t val;
assert(len == 1 || len == 2 || len == 4);
if (!pci_dev) { if (!pci_dev) {
switch(len) { return ~0x0;
case 1:
val = 0xff;
break;
case 2:
val = 0xffff;
break;
default:
case 4:
val = 0xffffffff;
break;
}
} else {
val = pci_dev->config_read(pci_dev,
PCIE_MMCFG_CONFOFFSET(mmcfg_addr), len);
} }
return pci_dev->config_read(pci_dev, PCIE_MMCFG_CONFOFFSET(addr), len);
return val;
} }
static void pcie_mmcfg_data_writeb(void *opaque, static void pcie_mmcfg_data_writeb(void *opaque,