ShuriZma
/
xemu
mirror of https://github.com/xemu-project/xemu.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

pci: cosmetic on pci_upadte_mappings() 

Remove one indentation of pci_update_mappings.
Just for cosmetics, no logic change.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Isaku Yamahata 2009-10-30 21:21:23 +09:00 committed by Anthony Liguori
parent fb23162885
commit a968857067
1 changed files with 76 additions and 70 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

146
hw/pci.c
View File

@ -637,86 +637,92 @@ static void pci_update_mappings(PCIDevice *d)
cmd = pci_get_word(d->config + PCI_COMMAND);
for(i = 0; i < PCI_NUM_REGIONS; i++) {
r = &d->io_regions[i];
if (r->size != 0) {
if (r->type & PCI_BASE_ADDRESS_SPACE_IO) {
if (cmd & PCI_COMMAND_IO) {
new_addr = pci_get_long(d->config + pci_bar(d, i));
new_addr = new_addr & ~(r->size - 1);
last_addr = new_addr + r->size - 1;
/* NOTE: we have only 64K ioports on PC */
if (last_addr <= new_addr || new_addr == 0 ||
last_addr >= 0x10000) {
new_addr = PCI_BAR_UNMAPPED;
}
} else {
/* this region isn't registered */
if (r->size == 0)
continue;
if (r->type & PCI_BASE_ADDRESS_SPACE_IO) {
if (cmd & PCI_COMMAND_IO) {
new_addr = pci_get_long(d->config + pci_bar(d, i));
new_addr = new_addr & ~(r->size - 1);
last_addr = new_addr + r->size - 1;
/* NOTE: we have only 64K ioports on PC */
if (last_addr <= new_addr || new_addr == 0 ||
last_addr >= 0x10000) {
new_addr = PCI_BAR_UNMAPPED;
}
} else {
if (cmd & PCI_COMMAND_MEMORY) {
if (r->type & PCI_BASE_ADDRESS_MEM_TYPE_64) {
new_addr = pci_get_quad(d->config + pci_bar(d, i));
} else {
new_addr = pci_get_long(d->config + pci_bar(d, i));
}
/* the ROM slot has a specific enable bit */
if (i == PCI_ROM_SLOT && !(new_addr & PCI_ROM_ADDRESS_ENABLE))
goto no_mem_map;
new_addr = new_addr & ~(r->size - 1);
last_addr = new_addr + r->size - 1;
/* NOTE: we do not support wrapping */
/* XXX: as we cannot support really dynamic
mappings, we handle specific values as invalid
mappings. */
if (last_addr <= new_addr || new_addr == 0 ||
last_addr == PCI_BAR_UNMAPPED ||
/* Now pcibus_t is 64bit.
* Check if 32 bit BAR wrap around explicitly.
* Without this, PC ide doesn't work well.
* TODO: remove this work around.
*/
(!(r->type & PCI_BASE_ADDRESS_MEM_TYPE_64) &&
last_addr >= UINT32_MAX) ||
/*
* OS is allowed to set BAR beyond its addressable
* bits. For example, 32 bit OS can set 64bit bar
* to >4G. Check it.
*/
last_addr >= TARGET_PHYS_ADDR_MAX) {
new_addr = PCI_BAR_UNMAPPED;
}
new_addr = PCI_BAR_UNMAPPED;
}
} else {
if (cmd & PCI_COMMAND_MEMORY) {
if (r->type & PCI_BASE_ADDRESS_MEM_TYPE_64) {
new_addr = pci_get_quad(d->config + pci_bar(d, i));
} else {
no_mem_map:
new_addr = pci_get_long(d->config + pci_bar(d, i));
}
/* the ROM slot has a specific enable bit */
if (i == PCI_ROM_SLOT && !(new_addr & PCI_ROM_ADDRESS_ENABLE))
goto no_mem_map;
new_addr = new_addr & ~(r->size - 1);
last_addr = new_addr + r->size - 1;
/* NOTE: we do not support wrapping */
/* XXX: as we cannot support really dynamic
mappings, we handle specific values as invalid
mappings. */
if (last_addr <= new_addr || new_addr == 0 ||
last_addr == PCI_BAR_UNMAPPED ||
/* Now pcibus_t is 64bit.
* Check if 32 bit BAR wrap around explicitly.
* Without this, PC ide doesn't work well.
* TODO: remove this work around.
*/
(!(r->type & PCI_BASE_ADDRESS_MEM_TYPE_64) &&
last_addr >= UINT32_MAX) ||
/*
* OS is allowed to set BAR beyond its addressable
* bits. For example, 32 bit OS can set 64bit bar
* to >4G. Check it.
*/
last_addr >= TARGET_PHYS_ADDR_MAX) {
new_addr = PCI_BAR_UNMAPPED;
}
} else {
no_mem_map:
new_addr = PCI_BAR_UNMAPPED;
}
/* now do the real mapping */
if (new_addr != r->addr) {
if (r->addr != PCI_BAR_UNMAPPED) {
if (r->type & PCI_BASE_ADDRESS_SPACE_IO) {
int class;
/* NOTE: specific hack for IDE in PC case:
only one byte must be mapped. */
class = pci_get_word(d->config + PCI_CLASS_DEVICE);
if (class == 0x0101 && r->size == 4) {
isa_unassign_ioport(r->addr + 2, 1);
} else {
isa_unassign_ioport(r->addr, r->size);
}
} else {
cpu_register_physical_memory(pci_to_cpu_addr(r->addr),
r->size,
IO_MEM_UNASSIGNED);
qemu_unregister_coalesced_mmio(r->addr, r->size);
}
}
r->addr = new_addr;
if (r->addr != PCI_BAR_UNMAPPED) {
r->map_func(d, i, r->addr, r->size, r->type);
}
/* This bar isn't changed */
if (new_addr == r->addr)
continue;
/* now do the real mapping */
if (r->addr != PCI_BAR_UNMAPPED) {
if (r->type & PCI_BASE_ADDRESS_SPACE_IO) {
int class;
/* NOTE: specific hack for IDE in PC case:
only one byte must be mapped. */
class = pci_get_word(d->config + PCI_CLASS_DEVICE);
if (class == 0x0101 && r->size == 4) {
isa_unassign_ioport(r->addr + 2, 1);
} else {
isa_unassign_ioport(r->addr, r->size);
}
} else {
cpu_register_physical_memory(pci_to_cpu_addr(r->addr),
r->size,
IO_MEM_UNASSIGNED);
qemu_unregister_coalesced_mmio(r->addr, r->size);
}
}
r->addr = new_addr;
if (r->addr != PCI_BAR_UNMAPPED) {
r->map_func(d, i, r->addr, r->size, r->type);
}
}
}